diff --git a/booger b/booger
new file mode 100644
index 00000000000..1293cf30e0a
--- /dev/null
+++ b/booger
@@ -0,0 +1,481169 @@
+diff --git a/dist/README.md b/dist/README.md
+index 92bffb4..278692d 100644
+--- a/dist/README.md
++++ b/dist/README.md
+@@ -49,7 +49,7 @@ The main plotly.js bundle weights in at:
+ 
+ | plotly.js | plotly.min.js | plotly.min.js + gzip | plotly-with-meta.js |
+ |-----------|---------------|----------------------|---------------------|
+-| 3.8 MB | 1.6 MB | 488.7 kB | 3.9 MB |
++| 3.8 MB | 1.6 MB | 491.9 kB | 4 MB |
+ 
+ ## Partial bundles
+ 
+@@ -64,7 +64,7 @@ Starting in `v1.15.0`, plotly.js also ships with several _partial_ bundles:
+ 
+ ### plotly.js basic
+ 
+-The `basic` partial bundle contains the `scatter`, `bar`and `pie` trace modules.
++The `basic` partial bundle contains the `scatter`, `bar` and `pie` trace modules.
+ 
+ | Way to import | Location |
+ |---------------|----------|
+@@ -78,11 +78,11 @@ The `basic` partial bundle contains the `scatter`, `bar`and `pie` trace modules.
+ 
+ | Raw size | Minified size | Minified + gzip size |
+ |------|-----------------|------------------------|
+-| 1.4 MB | 548.4 kB | 180.3 kB | 
++| 1.4 MB | 549.9 kB | 180.6 kB |
+ 
+ ### plotly.js cartesian
+ 
+-The `cartesian` partial bundle contains the `scatter`, `bar`, `box`, `heatmap`, `histogram`, `histogram2d`, `histogram2dcontour`, `pie`, `contour`and `scatterternary` trace modules.
++The `cartesian` partial bundle contains the `scatter`, `bar`, `box`, `heatmap`, `histogram`, `histogram2d`, `histogram2dcontour`, `pie`, `contour` and `scatterternary` trace modules.
+ 
+ | Way to import | Location |
+ |---------------|----------|
+@@ -96,11 +96,11 @@ The `cartesian` partial bundle contains the `scatter`, `bar`, `box`, `heatmap`,
+ 
+ | Raw size | Minified size | Minified + gzip size |
+ |------|-----------------|------------------------|
+-| 1.6 MB | 617.5 kB | 201.1 kB | 
++| 1.6 MB | 619.1 kB | 201.3 kB |
+ 
+ ### plotly.js geo
+ 
+-The `geo` partial bundle contains the `scatter`, `scattergeo`and `choropleth` trace modules.
++The `geo` partial bundle contains the `scatter`, `scattergeo` and `choropleth` trace modules.
+ 
+ | Way to import | Location |
+ |---------------|----------|
+@@ -114,11 +114,11 @@ The `geo` partial bundle contains the `scatter`, `scattergeo`and `choropleth` tr
+ 
+ | Raw size | Minified size | Minified + gzip size |
+ |------|-----------------|------------------------|
+-| 1.4 MB | 577.8 kB | 191.3 kB | 
++| 1.5 MB | 579.5 kB | 191.5 kB |
+ 
+ ### plotly.js gl3d
+ 
+-The `gl3d` partial bundle contains the `scatter`, `scatter3d`, `surface`and `mesh3d` trace modules.
++The `gl3d` partial bundle contains the `scatter`, `scatter3d`, `surface` and `mesh3d` trace modules.
+ 
+ | Way to import | Location |
+ |---------------|----------|
+@@ -132,11 +132,11 @@ The `gl3d` partial bundle contains the `scatter`, `scatter3d`, `surface`and `mes
+ 
+ | Raw size | Minified size | Minified + gzip size |
+ |------|-----------------|------------------------|
+-| 2.3 MB | 984.4 kB | 310.4 kB | 
++| 2.3 MB | 995.2 kB | 312.8 kB |
+ 
+ ### plotly.js gl2d
+ 
+-The `gl2d` partial bundle contains the `scatter`, `scattergl`, `heatmapgl`and `contourgl` trace modules.
++The `gl2d` partial bundle contains the `scatter`, `scattergl`, `heatmapgl` and `contourgl` trace modules.
+ 
+ | Way to import | Location |
+ |---------------|----------|
+@@ -150,11 +150,11 @@ The `gl2d` partial bundle contains the `scatter`, `scattergl`, `heatmapgl`and `c
+ 
+ | Raw size | Minified size | Minified + gzip size |
+ |------|-----------------|------------------------|
+-| 2 MB | 854 kB | 270.8 kB | 
++| 2 MB | 859.2 kB | 271.4 kB |
+ 
+ ### plotly.js mapbox
+ 
+-The `mapbox` partial bundle contains the `scatter`and `scattermapbox` trace modules.
++The `mapbox` partial bundle contains the `scatter` and `scattermapbox` trace modules.
+ 
+ | Way to import | Location |
+ |---------------|----------|
+@@ -168,7 +168,7 @@ The `mapbox` partial bundle contains the `scatter`and `scattermapbox` trace modu
+ 
+ | Raw size | Minified size | Minified + gzip size |
+ |------|-----------------|------------------------|
+-| 2.3 MB | 957.2 kB | 284.9 kB | 
++| 2.4 MB | 973.9 kB | 286.5 kB |
+ 
+ ----------------
+ 
+diff --git a/dist/plotly-basic.js b/dist/plotly-basic.js
+index 828afed..9672cdc 100644
+--- a/dist/plotly-basic.js
++++ b/dist/plotly-basic.js
+@@ -242,402 +242,9 @@ module.exports = Plotly;
+ module.exports = require('../src/traces/pie');
+ 
+ },{"../src/traces/pie":165}],7:[function(require,module,exports){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+-
+-function EventEmitter() {
+-  this._events = this._events || {};
+-  this._maxListeners = this._maxListeners || undefined;
+-}
+-module.exports = EventEmitter;
+-
+-// Backwards-compat with node 0.10.x
+-EventEmitter.EventEmitter = EventEmitter;
+-
+-EventEmitter.prototype._events = undefined;
+-EventEmitter.prototype._maxListeners = undefined;
+-
+-// By default EventEmitters will print a warning if more than 10 listeners are
+-// added to it. This is a useful default which helps finding memory leaks.
+-EventEmitter.defaultMaxListeners = 10;
+-
+-// Obviously not all Emitters should be limited to 10. This function allows
+-// that to be increased. Set to zero for unlimited.
+-EventEmitter.prototype.setMaxListeners = function(n) {
+-  if (!isNumber(n) || n < 0 || isNaN(n))
+-    throw TypeError('n must be a positive number');
+-  this._maxListeners = n;
+-  return this;
+-};
+-
+-EventEmitter.prototype.emit = function(type) {
+-  var er, handler, len, args, i, listeners;
+-
+-  if (!this._events)
+-    this._events = {};
+-
+-  // If there is no 'error' event listener then throw.
+-  if (type === 'error') {
+-    if (!this._events.error ||
+-        (isObject(this._events.error) && !this._events.error.length)) {
+-      er = arguments[1];
+-      if (er instanceof Error) {
+-        throw er; // Unhandled 'error' event
+-      }
+-      throw TypeError('Uncaught, unspecified "error" event.');
+-    }
+-  }
+-
+-  handler = this._events[type];
+-
+-  if (isUndefined(handler))
+-    return false;
+-
+-  if (isFunction(handler)) {
+-    switch (arguments.length) {
+-      // fast cases
+-      case 1:
+-        handler.call(this);
+-        break;
+-      case 2:
+-        handler.call(this, arguments[1]);
+-        break;
+-      case 3:
+-        handler.call(this, arguments[1], arguments[2]);
+-        break;
+-      // slower
+-      default:
+-        args = Array.prototype.slice.call(arguments, 1);
+-        handler.apply(this, args);
+-    }
+-  } else if (isObject(handler)) {
+-    args = Array.prototype.slice.call(arguments, 1);
+-    listeners = handler.slice();
+-    len = listeners.length;
+-    for (i = 0; i < len; i++)
+-      listeners[i].apply(this, args);
+-  }
+-
+-  return true;
+-};
+-
+-EventEmitter.prototype.addListener = function(type, listener) {
+-  var m;
+-
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  if (!this._events)
+-    this._events = {};
+-
+-  // To avoid recursion in the case that type === "newListener"! Before
+-  // adding it to the listeners, first emit "newListener".
+-  if (this._events.newListener)
+-    this.emit('newListener', type,
+-              isFunction(listener.listener) ?
+-              listener.listener : listener);
+-
+-  if (!this._events[type])
+-    // Optimize the case of one listener. Don't need the extra array object.
+-    this._events[type] = listener;
+-  else if (isObject(this._events[type]))
+-    // If we've already got an array, just append.
+-    this._events[type].push(listener);
+-  else
+-    // Adding the second element, need to change to array.
+-    this._events[type] = [this._events[type], listener];
+-
+-  // Check for listener leak
+-  if (isObject(this._events[type]) && !this._events[type].warned) {
+-    if (!isUndefined(this._maxListeners)) {
+-      m = this._maxListeners;
+-    } else {
+-      m = EventEmitter.defaultMaxListeners;
+-    }
+-
+-    if (m && m > 0 && this._events[type].length > m) {
+-      this._events[type].warned = true;
+-      console.error('(node) warning: possible EventEmitter memory ' +
+-                    'leak detected. %d listeners added. ' +
+-                    'Use emitter.setMaxListeners() to increase limit.',
+-                    this._events[type].length);
+-      if (typeof console.trace === 'function') {
+-        // not supported in IE 10
+-        console.trace();
+-      }
+-    }
+-  }
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+-
+-EventEmitter.prototype.once = function(type, listener) {
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  var fired = false;
+-
+-  function g() {
+-    this.removeListener(type, g);
+-
+-    if (!fired) {
+-      fired = true;
+-      listener.apply(this, arguments);
+-    }
+-  }
+-
+-  g.listener = listener;
+-  this.on(type, g);
+-
+-  return this;
+-};
+-
+-// emits a 'removeListener' event iff the listener was removed
+-EventEmitter.prototype.removeListener = function(type, listener) {
+-  var list, position, length, i;
+-
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  if (!this._events || !this._events[type])
+-    return this;
+-
+-  list = this._events[type];
+-  length = list.length;
+-  position = -1;
+-
+-  if (list === listener ||
+-      (isFunction(list.listener) && list.listener === listener)) {
+-    delete this._events[type];
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+-
+-  } else if (isObject(list)) {
+-    for (i = length; i-- > 0;) {
+-      if (list[i] === listener ||
+-          (list[i].listener && list[i].listener === listener)) {
+-        position = i;
+-        break;
+-      }
+-    }
+-
+-    if (position < 0)
+-      return this;
+-
+-    if (list.length === 1) {
+-      list.length = 0;
+-      delete this._events[type];
+-    } else {
+-      list.splice(position, 1);
+-    }
+-
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+-  }
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.removeAllListeners = function(type) {
+-  var key, listeners;
+-
+-  if (!this._events)
+-    return this;
+-
+-  // not listening for removeListener, no need to emit
+-  if (!this._events.removeListener) {
+-    if (arguments.length === 0)
+-      this._events = {};
+-    else if (this._events[type])
+-      delete this._events[type];
+-    return this;
+-  }
+-
+-  // emit removeListener for all listeners on all events
+-  if (arguments.length === 0) {
+-    for (key in this._events) {
+-      if (key === 'removeListener') continue;
+-      this.removeAllListeners(key);
+-    }
+-    this.removeAllListeners('removeListener');
+-    this._events = {};
+-    return this;
+-  }
+-
+-  listeners = this._events[type];
+-
+-  if (isFunction(listeners)) {
+-    this.removeListener(type, listeners);
+-  } else if (listeners) {
+-    // LIFO order
+-    while (listeners.length)
+-      this.removeListener(type, listeners[listeners.length - 1]);
+-  }
+-  delete this._events[type];
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.listeners = function(type) {
+-  var ret;
+-  if (!this._events || !this._events[type])
+-    ret = [];
+-  else if (isFunction(this._events[type]))
+-    ret = [this._events[type]];
+-  else
+-    ret = this._events[type].slice();
+-  return ret;
+-};
+-
+-EventEmitter.prototype.listenerCount = function(type) {
+-  if (this._events) {
+-    var evlistener = this._events[type];
+-
+-    if (isFunction(evlistener))
+-      return 1;
+-    else if (evlistener)
+-      return evlistener.length;
+-  }
+-  return 0;
+-};
+-
+-EventEmitter.listenerCount = function(emitter, type) {
+-  return emitter.listenerCount(type);
+-};
+-
+-function isFunction(arg) {
+-  return typeof arg === 'function';
+-}
+-
+-function isNumber(arg) {
+-  return typeof arg === 'number';
+-}
+-
+-function isObject(arg) {
+-  return typeof arg === 'object' && arg !== null;
+-}
+-
+-function isUndefined(arg) {
+-  return arg === void 0;
+-}
+-
+-},{}],8:[function(require,module,exports){
+-// shim for using process in browser
+-
+-var process = module.exports = {};
+-var queue = [];
+-var draining = false;
+-var currentQueue;
+-var queueIndex = -1;
+-
+-function cleanUpNextTick() {
+-    draining = false;
+-    if (currentQueue.length) {
+-        queue = currentQueue.concat(queue);
+-    } else {
+-        queueIndex = -1;
+-    }
+-    if (queue.length) {
+-        drainQueue();
+-    }
+-}
+-
+-function drainQueue() {
+-    if (draining) {
+-        return;
+-    }
+-    var timeout = setTimeout(cleanUpNextTick);
+-    draining = true;
+-
+-    var len = queue.length;
+-    while(len) {
+-        currentQueue = queue;
+-        queue = [];
+-        while (++queueIndex < len) {
+-            if (currentQueue) {
+-                currentQueue[queueIndex].run();
+-            }
+-        }
+-        queueIndex = -1;
+-        len = queue.length;
+-    }
+-    currentQueue = null;
+-    draining = false;
+-    clearTimeout(timeout);
+-}
+-
+-process.nextTick = function (fun) {
+-    var args = new Array(arguments.length - 1);
+-    if (arguments.length > 1) {
+-        for (var i = 1; i < arguments.length; i++) {
+-            args[i - 1] = arguments[i];
+-        }
+-    }
+-    queue.push(new Item(fun, args));
+-    if (queue.length === 1 && !draining) {
+-        setTimeout(drainQueue, 0);
+-    }
+-};
+-
+-// v8 likes predictible objects
+-function Item(fun, array) {
+-    this.fun = fun;
+-    this.array = array;
+-}
+-Item.prototype.run = function () {
+-    this.fun.apply(null, this.array);
+-};
+-process.title = 'browser';
+-process.browser = true;
+-process.env = {};
+-process.argv = [];
+-process.version = ''; // empty string to avoid regexp issues
+-process.versions = {};
+-
+-function noop() {}
+-
+-process.on = noop;
+-process.addListener = noop;
+-process.once = noop;
+-process.off = noop;
+-process.removeListener = noop;
+-process.removeAllListeners = noop;
+-process.emit = noop;
+-
+-process.binding = function (name) {
+-    throw new Error('process.binding is not supported');
+-};
+-
+-process.cwd = function () { return '/' };
+-process.chdir = function (dir) {
+-    throw new Error('process.chdir is not supported');
+-};
+-process.umask = function() { return 0; };
+-
+-},{}],9:[function(require,module,exports){
+ !function() {
+   var d3 = {
+-    version: "3.5.16"
++    version: "3.5.17"
+   };
+   var d3_arraySlice = [].slice, d3_array = function(list) {
+     return d3_arraySlice.call(list);
+@@ -4162,7 +3769,7 @@ process.umask = function() { return 0; };
+         λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
+       }
+     }
+-    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
++    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
+   }
+   function d3_geo_clipCircle(radius) {
+     var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
+@@ -10189,965 +9796,1468 @@ process.umask = function() { return 0; };
+   });
+   if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
+ }();
+-},{}],10:[function(require,module,exports){
++},{}],8:[function(require,module,exports){
+ (function (process,global){
+ /*!
+  * @overview es6-promise - a tiny implementation of Promises/A+.
+  * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
+  * @license   Licensed under MIT license
+- *            See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
+- * @version   3.1.2
++ *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
++ * @version   3.3.1
+  */
+ 
+-(function() {
+-    "use strict";
+-    function lib$es6$promise$utils$$objectOrFunction(x) {
+-      return typeof x === 'function' || (typeof x === 'object' && x !== null);
+-    }
++(function (global, factory) {
++    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
++    typeof define === 'function' && define.amd ? define(factory) :
++    (global.ES6Promise = factory());
++}(this, (function () { 'use strict';
+ 
+-    function lib$es6$promise$utils$$isFunction(x) {
+-      return typeof x === 'function';
+-    }
++function objectOrFunction(x) {
++  return typeof x === 'function' || typeof x === 'object' && x !== null;
++}
+ 
+-    function lib$es6$promise$utils$$isMaybeThenable(x) {
+-      return typeof x === 'object' && x !== null;
+-    }
++function isFunction(x) {
++  return typeof x === 'function';
++}
+ 
+-    var lib$es6$promise$utils$$_isArray;
+-    if (!Array.isArray) {
+-      lib$es6$promise$utils$$_isArray = function (x) {
+-        return Object.prototype.toString.call(x) === '[object Array]';
+-      };
++var _isArray = undefined;
++if (!Array.isArray) {
++  _isArray = function (x) {
++    return Object.prototype.toString.call(x) === '[object Array]';
++  };
++} else {
++  _isArray = Array.isArray;
++}
++
++var isArray = _isArray;
++
++var len = 0;
++var vertxNext = undefined;
++var customSchedulerFn = undefined;
++
++var asap = function asap(callback, arg) {
++  queue[len] = callback;
++  queue[len + 1] = arg;
++  len += 2;
++  if (len === 2) {
++    // If len is 2, that means that we need to schedule an async flush.
++    // If additional callbacks are queued before the queue is flushed, they
++    // will be processed by this flush that we are scheduling.
++    if (customSchedulerFn) {
++      customSchedulerFn(flush);
+     } else {
+-      lib$es6$promise$utils$$_isArray = Array.isArray;
+-    }
+-
+-    var lib$es6$promise$utils$$isArray = lib$es6$promise$utils$$_isArray;
+-    var lib$es6$promise$asap$$len = 0;
+-    var lib$es6$promise$asap$$vertxNext;
+-    var lib$es6$promise$asap$$customSchedulerFn;
+-
+-    var lib$es6$promise$asap$$asap = function asap(callback, arg) {
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len] = callback;
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len + 1] = arg;
+-      lib$es6$promise$asap$$len += 2;
+-      if (lib$es6$promise$asap$$len === 2) {
+-        // If len is 2, that means that we need to schedule an async flush.
+-        // If additional callbacks are queued before the queue is flushed, they
+-        // will be processed by this flush that we are scheduling.
+-        if (lib$es6$promise$asap$$customSchedulerFn) {
+-          lib$es6$promise$asap$$customSchedulerFn(lib$es6$promise$asap$$flush);
+-        } else {
+-          lib$es6$promise$asap$$scheduleFlush();
+-        }
+-      }
++      scheduleFlush();
+     }
++  }
++};
+ 
+-    function lib$es6$promise$asap$$setScheduler(scheduleFn) {
+-      lib$es6$promise$asap$$customSchedulerFn = scheduleFn;
+-    }
++function setScheduler(scheduleFn) {
++  customSchedulerFn = scheduleFn;
++}
+ 
+-    function lib$es6$promise$asap$$setAsap(asapFn) {
+-      lib$es6$promise$asap$$asap = asapFn;
+-    }
++function setAsap(asapFn) {
++  asap = asapFn;
++}
+ 
+-    var lib$es6$promise$asap$$browserWindow = (typeof window !== 'undefined') ? window : undefined;
+-    var lib$es6$promise$asap$$browserGlobal = lib$es6$promise$asap$$browserWindow || {};
+-    var lib$es6$promise$asap$$BrowserMutationObserver = lib$es6$promise$asap$$browserGlobal.MutationObserver || lib$es6$promise$asap$$browserGlobal.WebKitMutationObserver;
+-    var lib$es6$promise$asap$$isNode = typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';
++var browserWindow = typeof window !== 'undefined' ? window : undefined;
++var browserGlobal = browserWindow || {};
++var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
++var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]';
+ 
+-    // test for web worker but not in IE10
+-    var lib$es6$promise$asap$$isWorker = typeof Uint8ClampedArray !== 'undefined' &&
+-      typeof importScripts !== 'undefined' &&
+-      typeof MessageChannel !== 'undefined';
++// test for web worker but not in IE10
++var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined';
+ 
+-    // node
+-    function lib$es6$promise$asap$$useNextTick() {
+-      // node version 0.10.x displays a deprecation warning when nextTick is used recursively
+-      // see https://github.com/cujojs/when/issues/410 for details
+-      return function() {
+-        process.nextTick(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// node
++function useNextTick() {
++  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
++  // see https://github.com/cujojs/when/issues/410 for details
++  return function () {
++    return process.nextTick(flush);
++  };
++}
+ 
+-    // vertx
+-    function lib$es6$promise$asap$$useVertxTimer() {
+-      return function() {
+-        lib$es6$promise$asap$$vertxNext(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// vertx
++function useVertxTimer() {
++  return function () {
++    vertxNext(flush);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useMutationObserver() {
+-      var iterations = 0;
+-      var observer = new lib$es6$promise$asap$$BrowserMutationObserver(lib$es6$promise$asap$$flush);
+-      var node = document.createTextNode('');
+-      observer.observe(node, { characterData: true });
++function useMutationObserver() {
++  var iterations = 0;
++  var observer = new BrowserMutationObserver(flush);
++  var node = document.createTextNode('');
++  observer.observe(node, { characterData: true });
+ 
+-      return function() {
+-        node.data = (iterations = ++iterations % 2);
+-      };
+-    }
++  return function () {
++    node.data = iterations = ++iterations % 2;
++  };
++}
+ 
+-    // web worker
+-    function lib$es6$promise$asap$$useMessageChannel() {
+-      var channel = new MessageChannel();
+-      channel.port1.onmessage = lib$es6$promise$asap$$flush;
+-      return function () {
+-        channel.port2.postMessage(0);
+-      };
+-    }
++// web worker
++function useMessageChannel() {
++  var channel = new MessageChannel();
++  channel.port1.onmessage = flush;
++  return function () {
++    return channel.port2.postMessage(0);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useSetTimeout() {
+-      return function() {
+-        setTimeout(lib$es6$promise$asap$$flush, 1);
+-      };
+-    }
++function useSetTimeout() {
++  // Store setTimeout reference so es6-promise will be unaffected by
++  // other code modifying setTimeout (like sinon.useFakeTimers())
++  var globalSetTimeout = setTimeout;
++  return function () {
++    return globalSetTimeout(flush, 1);
++  };
++}
+ 
+-    var lib$es6$promise$asap$$queue = new Array(1000);
+-    function lib$es6$promise$asap$$flush() {
+-      for (var i = 0; i < lib$es6$promise$asap$$len; i+=2) {
+-        var callback = lib$es6$promise$asap$$queue[i];
+-        var arg = lib$es6$promise$asap$$queue[i+1];
++var queue = new Array(1000);
++function flush() {
++  for (var i = 0; i < len; i += 2) {
++    var callback = queue[i];
++    var arg = queue[i + 1];
+ 
+-        callback(arg);
++    callback(arg);
+ 
+-        lib$es6$promise$asap$$queue[i] = undefined;
+-        lib$es6$promise$asap$$queue[i+1] = undefined;
+-      }
++    queue[i] = undefined;
++    queue[i + 1] = undefined;
++  }
+ 
+-      lib$es6$promise$asap$$len = 0;
+-    }
++  len = 0;
++}
+ 
+-    function lib$es6$promise$asap$$attemptVertx() {
+-      try {
+-        var r = require;
+-        var vertx = r('vertx');
+-        lib$es6$promise$asap$$vertxNext = vertx.runOnLoop || vertx.runOnContext;
+-        return lib$es6$promise$asap$$useVertxTimer();
+-      } catch(e) {
+-        return lib$es6$promise$asap$$useSetTimeout();
+-      }
+-    }
++function attemptVertx() {
++  try {
++    var r = require;
++    var vertx = r('vertx');
++    vertxNext = vertx.runOnLoop || vertx.runOnContext;
++    return useVertxTimer();
++  } catch (e) {
++    return useSetTimeout();
++  }
++}
+ 
+-    var lib$es6$promise$asap$$scheduleFlush;
+-    // Decide what async method to use to triggering processing of queued callbacks:
+-    if (lib$es6$promise$asap$$isNode) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useNextTick();
+-    } else if (lib$es6$promise$asap$$BrowserMutationObserver) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMutationObserver();
+-    } else if (lib$es6$promise$asap$$isWorker) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMessageChannel();
+-    } else if (lib$es6$promise$asap$$browserWindow === undefined && typeof require === 'function') {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$attemptVertx();
+-    } else {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useSetTimeout();
+-    }
+-    function lib$es6$promise$then$$then(onFulfillment, onRejection) {
+-      var parent = this;
+-      var state = parent._state;
++var scheduleFlush = undefined;
++// Decide what async method to use to triggering processing of queued callbacks:
++if (isNode) {
++  scheduleFlush = useNextTick();
++} else if (BrowserMutationObserver) {
++  scheduleFlush = useMutationObserver();
++} else if (isWorker) {
++  scheduleFlush = useMessageChannel();
++} else if (browserWindow === undefined && typeof require === 'function') {
++  scheduleFlush = attemptVertx();
++} else {
++  scheduleFlush = useSetTimeout();
++}
+ 
+-      if (state === lib$es6$promise$$internal$$FULFILLED && !onFulfillment || state === lib$es6$promise$$internal$$REJECTED && !onRejection) {
+-        return this;
+-      }
++function then(onFulfillment, onRejection) {
++  var _arguments = arguments;
+ 
+-      var child = new this.constructor(lib$es6$promise$$internal$$noop);
+-      var result = parent._result;
++  var parent = this;
+ 
+-      if (state) {
+-        var callback = arguments[state - 1];
+-        lib$es6$promise$asap$$asap(function(){
+-          lib$es6$promise$$internal$$invokeCallback(state, child, callback, result);
+-        });
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection);
+-      }
++  var child = new this.constructor(noop);
+ 
+-      return child;
+-    }
+-    var lib$es6$promise$then$$default = lib$es6$promise$then$$then;
+-    function lib$es6$promise$promise$resolve$$resolve(object) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++  if (child[PROMISE_ID] === undefined) {
++    makePromise(child);
++  }
+ 
+-      if (object && typeof object === 'object' && object.constructor === Constructor) {
+-        return object;
+-      }
++  var _state = parent._state;
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$resolve(promise, object);
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$resolve$$default = lib$es6$promise$promise$resolve$$resolve;
++  if (_state) {
++    (function () {
++      var callback = _arguments[_state - 1];
++      asap(function () {
++        return invokeCallback(_state, child, callback, parent._result);
++      });
++    })();
++  } else {
++    subscribe(parent, child, onFulfillment, onRejection);
++  }
+ 
+-    function lib$es6$promise$$internal$$noop() {}
++  return child;
++}
+ 
+-    var lib$es6$promise$$internal$$PENDING   = void 0;
+-    var lib$es6$promise$$internal$$FULFILLED = 1;
+-    var lib$es6$promise$$internal$$REJECTED  = 2;
++/**
++  `Promise.resolve` returns a promise that will become resolved with the
++  passed `value`. It is shorthand for the following:
+ 
+-    var lib$es6$promise$$internal$$GET_THEN_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    resolve(1);
++  });
+ 
+-    function lib$es6$promise$$internal$$selfFulfillment() {
+-      return new TypeError("You cannot resolve a promise with itself");
+-    }
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
+ 
+-    function lib$es6$promise$$internal$$cannotReturnOwn() {
+-      return new TypeError('A promises callback cannot return that same promise.');
+-    }
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-    function lib$es6$promise$$internal$$getThen(promise) {
+-      try {
+-        return promise.then;
+-      } catch(error) {
+-        lib$es6$promise$$internal$$GET_THEN_ERROR.error = error;
+-        return lib$es6$promise$$internal$$GET_THEN_ERROR;
+-      }
+-    }
++  ```javascript
++  let promise = Promise.resolve(1);
+ 
+-    function lib$es6$promise$$internal$$tryThen(then, value, fulfillmentHandler, rejectionHandler) {
+-      try {
+-        then.call(value, fulfillmentHandler, rejectionHandler);
+-      } catch(e) {
+-        return e;
+-      }
+-    }
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
++
++  @method resolve
++  @static
++  @param {Any} value value that the returned promise will be resolved with
++  Useful for tooling.
++  @return {Promise} a promise that will become fulfilled with the given
++  `value`
++*/
++function resolve(object) {
++  /*jshint validthis:true */
++  var Constructor = this;
+ 
+-    function lib$es6$promise$$internal$$handleForeignThenable(promise, thenable, then) {
+-       lib$es6$promise$asap$$asap(function(promise) {
+-        var sealed = false;
+-        var error = lib$es6$promise$$internal$$tryThen(then, thenable, function(value) {
+-          if (sealed) { return; }
+-          sealed = true;
+-          if (thenable !== value) {
+-            lib$es6$promise$$internal$$resolve(promise, value);
+-          } else {
+-            lib$es6$promise$$internal$$fulfill(promise, value);
+-          }
+-        }, function(reason) {
+-          if (sealed) { return; }
+-          sealed = true;
++  if (object && typeof object === 'object' && object.constructor === Constructor) {
++    return object;
++  }
+ 
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        }, 'Settle: ' + (promise._label || ' unknown promise'));
++  var promise = new Constructor(noop);
++  _resolve(promise, object);
++  return promise;
++}
+ 
+-        if (!sealed && error) {
+-          sealed = true;
+-          lib$es6$promise$$internal$$reject(promise, error);
+-        }
+-      }, promise);
+-    }
++var PROMISE_ID = Math.random().toString(36).substring(16);
+ 
+-    function lib$es6$promise$$internal$$handleOwnThenable(promise, thenable) {
+-      if (thenable._state === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, thenable._result);
+-      } else if (thenable._state === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, thenable._result);
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(thenable, undefined, function(value) {
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      }
+-    }
++function noop() {}
+ 
+-    function lib$es6$promise$$internal$$handleMaybeThenable(promise, maybeThenable, then) {
+-      if (maybeThenable.constructor === promise.constructor &&
+-          then === lib$es6$promise$then$$default &&
+-          constructor.resolve === lib$es6$promise$promise$resolve$$default) {
+-        lib$es6$promise$$internal$$handleOwnThenable(promise, maybeThenable);
+-      } else {
+-        if (then === lib$es6$promise$$internal$$GET_THEN_ERROR) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$GET_THEN_ERROR.error);
+-        } else if (then === undefined) {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        } else if (lib$es6$promise$utils$$isFunction(then)) {
+-          lib$es6$promise$$internal$$handleForeignThenable(promise, maybeThenable, then);
+-        } else {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        }
+-      }
+-    }
++var PENDING = void 0;
++var FULFILLED = 1;
++var REJECTED = 2;
+ 
+-    function lib$es6$promise$$internal$$resolve(promise, value) {
+-      if (promise === value) {
+-        lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$selfFulfillment());
+-      } else if (lib$es6$promise$utils$$objectOrFunction(value)) {
+-        lib$es6$promise$$internal$$handleMaybeThenable(promise, value, lib$es6$promise$$internal$$getThen(value));
+-      } else {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      }
+-    }
++var GET_THEN_ERROR = new ErrorObject();
+ 
+-    function lib$es6$promise$$internal$$publishRejection(promise) {
+-      if (promise._onerror) {
+-        promise._onerror(promise._result);
+-      }
++function selfFulfillment() {
++  return new TypeError("You cannot resolve a promise with itself");
++}
+ 
+-      lib$es6$promise$$internal$$publish(promise);
+-    }
++function cannotReturnOwn() {
++  return new TypeError('A promises callback cannot return that same promise.');
++}
+ 
+-    function lib$es6$promise$$internal$$fulfill(promise, value) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
++function getThen(promise) {
++  try {
++    return promise.then;
++  } catch (error) {
++    GET_THEN_ERROR.error = error;
++    return GET_THEN_ERROR;
++  }
++}
+ 
+-      promise._result = value;
+-      promise._state = lib$es6$promise$$internal$$FULFILLED;
++function tryThen(then, value, fulfillmentHandler, rejectionHandler) {
++  try {
++    then.call(value, fulfillmentHandler, rejectionHandler);
++  } catch (e) {
++    return e;
++  }
++}
+ 
+-      if (promise._subscribers.length !== 0) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, promise);
++function handleForeignThenable(promise, thenable, then) {
++  asap(function (promise) {
++    var sealed = false;
++    var error = tryThen(then, thenable, function (value) {
++      if (sealed) {
++        return;
+       }
++      sealed = true;
++      if (thenable !== value) {
++        _resolve(promise, value);
++      } else {
++        fulfill(promise, value);
++      }
++    }, function (reason) {
++      if (sealed) {
++        return;
++      }
++      sealed = true;
++
++      _reject(promise, reason);
++    }, 'Settle: ' + (promise._label || ' unknown promise'));
++
++    if (!sealed && error) {
++      sealed = true;
++      _reject(promise, error);
+     }
++  }, promise);
++}
+ 
+-    function lib$es6$promise$$internal$$reject(promise, reason) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
+-      promise._state = lib$es6$promise$$internal$$REJECTED;
+-      promise._result = reason;
++function handleOwnThenable(promise, thenable) {
++  if (thenable._state === FULFILLED) {
++    fulfill(promise, thenable._result);
++  } else if (thenable._state === REJECTED) {
++    _reject(promise, thenable._result);
++  } else {
++    subscribe(thenable, undefined, function (value) {
++      return _resolve(promise, value);
++    }, function (reason) {
++      return _reject(promise, reason);
++    });
++  }
++}
+ 
+-      lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publishRejection, promise);
++function handleMaybeThenable(promise, maybeThenable, then$$) {
++  if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) {
++    handleOwnThenable(promise, maybeThenable);
++  } else {
++    if (then$$ === GET_THEN_ERROR) {
++      _reject(promise, GET_THEN_ERROR.error);
++    } else if (then$$ === undefined) {
++      fulfill(promise, maybeThenable);
++    } else if (isFunction(then$$)) {
++      handleForeignThenable(promise, maybeThenable, then$$);
++    } else {
++      fulfill(promise, maybeThenable);
+     }
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection) {
+-      var subscribers = parent._subscribers;
+-      var length = subscribers.length;
++function _resolve(promise, value) {
++  if (promise === value) {
++    _reject(promise, selfFulfillment());
++  } else if (objectOrFunction(value)) {
++    handleMaybeThenable(promise, value, getThen(value));
++  } else {
++    fulfill(promise, value);
++  }
++}
+ 
+-      parent._onerror = null;
++function publishRejection(promise) {
++  if (promise._onerror) {
++    promise._onerror(promise._result);
++  }
+ 
+-      subscribers[length] = child;
+-      subscribers[length + lib$es6$promise$$internal$$FULFILLED] = onFulfillment;
+-      subscribers[length + lib$es6$promise$$internal$$REJECTED]  = onRejection;
++  publish(promise);
++}
+ 
+-      if (length === 0 && parent._state) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, parent);
+-      }
+-    }
++function fulfill(promise, value) {
++  if (promise._state !== PENDING) {
++    return;
++  }
+ 
+-    function lib$es6$promise$$internal$$publish(promise) {
+-      var subscribers = promise._subscribers;
+-      var settled = promise._state;
++  promise._result = value;
++  promise._state = FULFILLED;
+ 
+-      if (subscribers.length === 0) { return; }
++  if (promise._subscribers.length !== 0) {
++    asap(publish, promise);
++  }
++}
+ 
+-      var child, callback, detail = promise._result;
++function _reject(promise, reason) {
++  if (promise._state !== PENDING) {
++    return;
++  }
++  promise._state = REJECTED;
++  promise._result = reason;
+ 
+-      for (var i = 0; i < subscribers.length; i += 3) {
+-        child = subscribers[i];
+-        callback = subscribers[i + settled];
++  asap(publishRejection, promise);
++}
+ 
+-        if (child) {
+-          lib$es6$promise$$internal$$invokeCallback(settled, child, callback, detail);
+-        } else {
+-          callback(detail);
+-        }
+-      }
++function subscribe(parent, child, onFulfillment, onRejection) {
++  var _subscribers = parent._subscribers;
++  var length = _subscribers.length;
+ 
+-      promise._subscribers.length = 0;
+-    }
++  parent._onerror = null;
+ 
+-    function lib$es6$promise$$internal$$ErrorObject() {
+-      this.error = null;
+-    }
++  _subscribers[length] = child;
++  _subscribers[length + FULFILLED] = onFulfillment;
++  _subscribers[length + REJECTED] = onRejection;
+ 
+-    var lib$es6$promise$$internal$$TRY_CATCH_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++  if (length === 0 && parent._state) {
++    asap(publish, parent);
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$tryCatch(callback, detail) {
+-      try {
+-        return callback(detail);
+-      } catch(e) {
+-        lib$es6$promise$$internal$$TRY_CATCH_ERROR.error = e;
+-        return lib$es6$promise$$internal$$TRY_CATCH_ERROR;
+-      }
++function publish(promise) {
++  var subscribers = promise._subscribers;
++  var settled = promise._state;
++
++  if (subscribers.length === 0) {
++    return;
++  }
++
++  var child = undefined,
++      callback = undefined,
++      detail = promise._result;
++
++  for (var i = 0; i < subscribers.length; i += 3) {
++    child = subscribers[i];
++    callback = subscribers[i + settled];
++
++    if (child) {
++      invokeCallback(settled, child, callback, detail);
++    } else {
++      callback(detail);
+     }
++  }
+ 
+-    function lib$es6$promise$$internal$$invokeCallback(settled, promise, callback, detail) {
+-      var hasCallback = lib$es6$promise$utils$$isFunction(callback),
+-          value, error, succeeded, failed;
++  promise._subscribers.length = 0;
++}
+ 
+-      if (hasCallback) {
+-        value = lib$es6$promise$$internal$$tryCatch(callback, detail);
++function ErrorObject() {
++  this.error = null;
++}
+ 
+-        if (value === lib$es6$promise$$internal$$TRY_CATCH_ERROR) {
+-          failed = true;
+-          error = value.error;
+-          value = null;
+-        } else {
+-          succeeded = true;
+-        }
++var TRY_CATCH_ERROR = new ErrorObject();
+ 
+-        if (promise === value) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$cannotReturnOwn());
+-          return;
+-        }
++function tryCatch(callback, detail) {
++  try {
++    return callback(detail);
++  } catch (e) {
++    TRY_CATCH_ERROR.error = e;
++    return TRY_CATCH_ERROR;
++  }
++}
+ 
+-      } else {
+-        value = detail;
+-        succeeded = true;
+-      }
++function invokeCallback(settled, promise, callback, detail) {
++  var hasCallback = isFunction(callback),
++      value = undefined,
++      error = undefined,
++      succeeded = undefined,
++      failed = undefined;
+ 
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) {
+-        // noop
+-      } else if (hasCallback && succeeded) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      } else if (failed) {
+-        lib$es6$promise$$internal$$reject(promise, error);
+-      } else if (settled === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      } else if (settled === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, value);
+-      }
++  if (hasCallback) {
++    value = tryCatch(callback, detail);
++
++    if (value === TRY_CATCH_ERROR) {
++      failed = true;
++      error = value.error;
++      value = null;
++    } else {
++      succeeded = true;
+     }
+ 
+-    function lib$es6$promise$$internal$$initializePromise(promise, resolver) {
+-      try {
+-        resolver(function resolvePromise(value){
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function rejectPromise(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      } catch(e) {
+-        lib$es6$promise$$internal$$reject(promise, e);
+-      }
++    if (promise === value) {
++      _reject(promise, cannotReturnOwn());
++      return;
+     }
++  } else {
++    value = detail;
++    succeeded = true;
++  }
+ 
+-    function lib$es6$promise$promise$all$$all(entries) {
+-      return new lib$es6$promise$enumerator$$default(this, entries).promise;
++  if (promise._state !== PENDING) {
++    // noop
++  } else if (hasCallback && succeeded) {
++      _resolve(promise, value);
++    } else if (failed) {
++      _reject(promise, error);
++    } else if (settled === FULFILLED) {
++      fulfill(promise, value);
++    } else if (settled === REJECTED) {
++      _reject(promise, value);
+     }
+-    var lib$es6$promise$promise$all$$default = lib$es6$promise$promise$all$$all;
+-    function lib$es6$promise$promise$race$$race(entries) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++}
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
++function initializePromise(promise, resolver) {
++  try {
++    resolver(function resolvePromise(value) {
++      _resolve(promise, value);
++    }, function rejectPromise(reason) {
++      _reject(promise, reason);
++    });
++  } catch (e) {
++    _reject(promise, e);
++  }
++}
+ 
+-      if (!lib$es6$promise$utils$$isArray(entries)) {
+-        lib$es6$promise$$internal$$reject(promise, new TypeError('You must pass an array to race.'));
+-        return promise;
+-      }
++var id = 0;
++function nextId() {
++  return id++;
++}
+ 
+-      var length = entries.length;
++function makePromise(promise) {
++  promise[PROMISE_ID] = id++;
++  promise._state = undefined;
++  promise._result = undefined;
++  promise._subscribers = [];
++}
+ 
+-      function onFulfillment(value) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      }
++function Enumerator(Constructor, input) {
++  this._instanceConstructor = Constructor;
++  this.promise = new Constructor(noop);
+ 
+-      function onRejection(reason) {
+-        lib$es6$promise$$internal$$reject(promise, reason);
+-      }
++  if (!this.promise[PROMISE_ID]) {
++    makePromise(this.promise);
++  }
+ 
+-      for (var i = 0; promise._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        lib$es6$promise$$internal$$subscribe(Constructor.resolve(entries[i]), undefined, onFulfillment, onRejection);
+-      }
++  if (isArray(input)) {
++    this._input = input;
++    this.length = input.length;
++    this._remaining = input.length;
+ 
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$race$$default = lib$es6$promise$promise$race$$race;
+-    function lib$es6$promise$promise$reject$$reject(reason) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$reject(promise, reason);
+-      return promise;
++    this._result = new Array(this.length);
++
++    if (this.length === 0) {
++      fulfill(this.promise, this._result);
++    } else {
++      this.length = this.length || 0;
++      this._enumerate();
++      if (this._remaining === 0) {
++        fulfill(this.promise, this._result);
++      }
+     }
+-    var lib$es6$promise$promise$reject$$default = lib$es6$promise$promise$reject$$reject;
++  } else {
++    _reject(this.promise, validationError());
++  }
++}
+ 
+-    var lib$es6$promise$promise$$counter = 0;
++function validationError() {
++  return new Error('Array Methods must be provided an Array');
++};
++
++Enumerator.prototype._enumerate = function () {
++  var length = this.length;
++  var _input = this._input;
++
++  for (var i = 0; this._state === PENDING && i < length; i++) {
++    this._eachEntry(_input[i], i);
++  }
++};
++
++Enumerator.prototype._eachEntry = function (entry, i) {
++  var c = this._instanceConstructor;
++  var resolve$$ = c.resolve;
+ 
+-    function lib$es6$promise$promise$$needsResolver() {
+-      throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++  if (resolve$$ === resolve) {
++    var _then = getThen(entry);
++
++    if (_then === then && entry._state !== PENDING) {
++      this._settledAt(entry._state, i, entry._result);
++    } else if (typeof _then !== 'function') {
++      this._remaining--;
++      this._result[i] = entry;
++    } else if (c === Promise) {
++      var promise = new c(noop);
++      handleMaybeThenable(promise, entry, _then);
++      this._willSettleAt(promise, i);
++    } else {
++      this._willSettleAt(new c(function (resolve$$) {
++        return resolve$$(entry);
++      }), i);
+     }
++  } else {
++    this._willSettleAt(resolve$$(entry), i);
++  }
++};
++
++Enumerator.prototype._settledAt = function (state, i, value) {
++  var promise = this.promise;
++
++  if (promise._state === PENDING) {
++    this._remaining--;
+ 
+-    function lib$es6$promise$promise$$needsNew() {
+-      throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++    if (state === REJECTED) {
++      _reject(promise, value);
++    } else {
++      this._result[i] = value;
+     }
++  }
+ 
+-    var lib$es6$promise$promise$$default = lib$es6$promise$promise$$Promise;
+-    /**
+-      Promise objects represent the eventual result of an asynchronous operation. The
+-      primary way of interacting with a promise is through its `then` method, which
+-      registers callbacks to receive either a promise's eventual value or the reason
+-      why the promise cannot be fulfilled.
++  if (this._remaining === 0) {
++    fulfill(promise, this._result);
++  }
++};
+ 
+-      Terminology
+-      -----------
++Enumerator.prototype._willSettleAt = function (promise, i) {
++  var enumerator = this;
+ 
+-      - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
+-      - `thenable` is an object or function that defines a `then` method.
+-      - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
+-      - `exception` is a value that is thrown using the throw statement.
+-      - `reason` is a value that indicates why a promise was rejected.
+-      - `settled` the final resting state of a promise, fulfilled or rejected.
++  subscribe(promise, undefined, function (value) {
++    return enumerator._settledAt(FULFILLED, i, value);
++  }, function (reason) {
++    return enumerator._settledAt(REJECTED, i, reason);
++  });
++};
+ 
+-      A promise can be in one of three states: pending, fulfilled, or rejected.
++/**
++  `Promise.all` accepts an array of promises, and returns a new promise which
++  is fulfilled with an array of fulfillment values for the passed promises, or
++  rejected with the reason of the first passed promise to be rejected. It casts all
++  elements of the passed iterable to promises as it runs this algorithm.
+ 
+-      Promises that are fulfilled have a fulfillment value and are in the fulfilled
+-      state.  Promises that are rejected have a rejection reason and are in the
+-      rejected state.  A fulfillment value is never a thenable.
++  Example:
+ 
+-      Promises can also be said to *resolve* a value.  If this value is also a
+-      promise, then the original promise's settled state will match the value's
+-      settled state.  So a promise that *resolves* a promise that rejects will
+-      itself reject, and a promise that *resolves* a promise that fulfills will
+-      itself fulfill.
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = resolve(2);
++  let promise3 = resolve(3);
++  let promises = [ promise1, promise2, promise3 ];
+ 
++  Promise.all(promises).then(function(array){
++    // The array here would be [ 1, 2, 3 ];
++  });
++  ```
+ 
+-      Basic Usage:
+-      ------------
++  If any of the `promises` given to `all` are rejected, the first promise
++  that is rejected will be given as an argument to the returned promises's
++  rejection handler. For example:
+ 
+-      ```js
+-      var promise = new Promise(function(resolve, reject) {
+-        // on success
+-        resolve(value);
++  Example:
+ 
+-        // on failure
+-        reject(reason);
+-      });
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = reject(new Error("2"));
++  let promise3 = reject(new Error("3"));
++  let promises = [ promise1, promise2, promise3 ];
+ 
+-      promise.then(function(value) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++  Promise.all(promises).then(function(array){
++    // Code here never runs because there are rejected promises!
++  }, function(error) {
++    // error.message === "2"
++  });
++  ```
++
++  @method all
++  @static
++  @param {Array} entries array of promises
++  @param {String} label optional string for labeling the promise.
++  Useful for tooling.
++  @return {Promise} promise that is fulfilled when all `promises` have been
++  fulfilled, or rejected if any of them become rejected.
++  @static
++*/
++function all(entries) {
++  return new Enumerator(this, entries).promise;
++}
+ 
+-      Advanced Usage:
+-      ---------------
++/**
++  `Promise.race` returns a new promise which is settled in the same way as the
++  first passed promise to settle.
+ 
+-      Promises shine when abstracting away asynchronous interactions such as
+-      `XMLHttpRequest`s.
++  Example:
+ 
+-      ```js
+-      function getJSON(url) {
+-        return new Promise(function(resolve, reject){
+-          var xhr = new XMLHttpRequest();
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-          xhr.open('GET', url);
+-          xhr.onreadystatechange = handler;
+-          xhr.responseType = 'json';
+-          xhr.setRequestHeader('Accept', 'application/json');
+-          xhr.send();
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 2');
++    }, 100);
++  });
+ 
+-          function handler() {
+-            if (this.readyState === this.DONE) {
+-              if (this.status === 200) {
+-                resolve(this.response);
+-              } else {
+-                reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
+-              }
+-            }
+-          };
+-        });
+-      }
++  Promise.race([promise1, promise2]).then(function(result){
++    // result === 'promise 2' because it was resolved before promise1
++    // was resolved.
++  });
++  ```
++
++  `Promise.race` is deterministic in that only the state of the first
++  settled promise matters. For example, even if other promises given to the
++  `promises` array argument are resolved, but the first settled promise has
++  become rejected before the other promises became fulfilled, the returned
++  promise will become rejected:
++
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-      getJSON('/posts.json').then(function(json) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      reject(new Error('promise 2'));
++    }, 100);
++  });
++
++  Promise.race([promise1, promise2]).then(function(result){
++    // Code here never runs
++  }, function(reason){
++    // reason.message === 'promise 2' because promise 2 became rejected before
++    // promise 1 became fulfilled
++  });
++  ```
+ 
+-      Unlike callbacks, promises are great composable primitives.
++  An example real-world use case is implementing timeouts:
+ 
+-      ```js
+-      Promise.all([
+-        getJSON('/posts'),
+-        getJSON('/comments')
+-      ]).then(function(values){
+-        values[0] // => postsJSON
+-        values[1] // => commentsJSON
++  ```javascript
++  Promise.race([ajax('foo.json'), timeout(5000)])
++  ```
+ 
+-        return values;
+-      });
+-      ```
+-
+-      @class Promise
+-      @param {function} resolver
+-      Useful for tooling.
+-      @constructor
+-    */
+-    function lib$es6$promise$promise$$Promise(resolver) {
+-      this._id = lib$es6$promise$promise$$counter++;
+-      this._state = undefined;
+-      this._result = undefined;
+-      this._subscribers = [];
+-
+-      if (lib$es6$promise$$internal$$noop !== resolver) {
+-        typeof resolver !== 'function' && lib$es6$promise$promise$$needsResolver();
+-        this instanceof lib$es6$promise$promise$$Promise ? lib$es6$promise$$internal$$initializePromise(this, resolver) : lib$es6$promise$promise$$needsNew();
++  @method race
++  @static
++  @param {Array} promises array of promises to observe
++  Useful for tooling.
++  @return {Promise} a promise which settles in the same way as the first passed
++  promise to settle.
++*/
++function race(entries) {
++  /*jshint validthis:true */
++  var Constructor = this;
++
++  if (!isArray(entries)) {
++    return new Constructor(function (_, reject) {
++      return reject(new TypeError('You must pass an array to race.'));
++    });
++  } else {
++    return new Constructor(function (resolve, reject) {
++      var length = entries.length;
++      for (var i = 0; i < length; i++) {
++        Constructor.resolve(entries[i]).then(resolve, reject);
+       }
+-    }
++    });
++  }
++}
+ 
+-    lib$es6$promise$promise$$Promise.all = lib$es6$promise$promise$all$$default;
+-    lib$es6$promise$promise$$Promise.race = lib$es6$promise$promise$race$$default;
+-    lib$es6$promise$promise$$Promise.resolve = lib$es6$promise$promise$resolve$$default;
+-    lib$es6$promise$promise$$Promise.reject = lib$es6$promise$promise$reject$$default;
+-    lib$es6$promise$promise$$Promise._setScheduler = lib$es6$promise$asap$$setScheduler;
+-    lib$es6$promise$promise$$Promise._setAsap = lib$es6$promise$asap$$setAsap;
+-    lib$es6$promise$promise$$Promise._asap = lib$es6$promise$asap$$asap;
++/**
++  `Promise.reject` returns a promise rejected with the passed `reason`.
++  It is shorthand for the following:
+ 
+-    lib$es6$promise$promise$$Promise.prototype = {
+-      constructor: lib$es6$promise$promise$$Promise,
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    reject(new Error('WHOOPS'));
++  });
+ 
+-    /**
+-      The primary way of interacting with a promise is through its `then` method,
+-      which registers callbacks to receive either a promise's eventual value or the
+-      reason why the promise cannot be fulfilled.
+-
+-      ```js
+-      findUser().then(function(user){
+-        // user is available
+-      }, function(reason){
+-        // user is unavailable, and you are given the reason why
+-      });
+-      ```
+-
+-      Chaining
+-      --------
+-
+-      The return value of `then` is itself a promise.  This second, 'downstream'
+-      promise is resolved with the return value of the first promise's fulfillment
+-      or rejection handler, or rejected if the handler throws an exception.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return user.name;
+-      }, function (reason) {
+-        return 'default name';
+-      }).then(function (userName) {
+-        // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
+-        // will be `'default name'`
+-      });
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      findUser().then(function (user) {
+-        throw new Error('Found user, but still unhappy');
+-      }, function (reason) {
+-        throw new Error('`findUser` rejected and we're unhappy');
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
+-        // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
+-      });
+-      ```
+-      If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        throw new PedagogicalException('Upstream error');
+-      }).then(function (value) {
+-        // never reached
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // The `PedgagocialException` is propagated all the way down to here
+-      });
+-      ```
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-      Assimilation
+-      ------------
++  ```javascript
++  let promise = Promise.reject(new Error('WHOOPS'));
+ 
+-      Sometimes the value you want to propagate to a downstream promise can only be
+-      retrieved asynchronously. This can be achieved by returning a promise in the
+-      fulfillment or rejection handler. The downstream promise will then be pending
+-      until the returned promise is settled. This is called *assimilation*.
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // The user's comments are now available
+-      });
+-      ```
++  @method reject
++  @static
++  @param {Any} reason value that the returned promise will be rejected with.
++  Useful for tooling.
++  @return {Promise} a promise rejected with the given `reason`.
++*/
++function reject(reason) {
++  /*jshint validthis:true */
++  var Constructor = this;
++  var promise = new Constructor(noop);
++  _reject(promise, reason);
++  return promise;
++}
+ 
+-      If the assimliated promise rejects, then the downstream promise will also reject.
++function needsResolver() {
++  throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++}
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // If `findCommentsByAuthor` fulfills, we'll have the value here
+-      }, function (reason) {
+-        // If `findCommentsByAuthor` rejects, we'll have the reason here
+-      });
+-      ```
++function needsNew() {
++  throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++}
+ 
+-      Simple Example
+-      --------------
++/**
++  Promise objects represent the eventual result of an asynchronous operation. The
++  primary way of interacting with a promise is through its `then` method, which
++  registers callbacks to receive either a promise's eventual value or the reason
++  why the promise cannot be fulfilled.
+ 
+-      Synchronous Example
++  Terminology
++  -----------
+ 
+-      ```javascript
+-      var result;
++  - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
++  - `thenable` is an object or function that defines a `then` method.
++  - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
++  - `exception` is a value that is thrown using the throw statement.
++  - `reason` is a value that indicates why a promise was rejected.
++  - `settled` the final resting state of a promise, fulfilled or rejected.
+ 
+-      try {
+-        result = findResult();
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
++  A promise can be in one of three states: pending, fulfilled, or rejected.
+ 
+-      Errback Example
++  Promises that are fulfilled have a fulfillment value and are in the fulfilled
++  state.  Promises that are rejected have a rejection reason and are in the
++  rejected state.  A fulfillment value is never a thenable.
+ 
+-      ```js
+-      findResult(function(result, err){
+-        if (err) {
+-          // failure
+-        } else {
+-          // success
+-        }
+-      });
+-      ```
++  Promises can also be said to *resolve* a value.  If this value is also a
++  promise, then the original promise's settled state will match the value's
++  settled state.  So a promise that *resolves* a promise that rejects will
++  itself reject, and a promise that *resolves* a promise that fulfills will
++  itself fulfill.
+ 
+-      Promise Example;
+ 
+-      ```javascript
+-      findResult().then(function(result){
+-        // success
+-      }, function(reason){
+-        // failure
+-      });
+-      ```
++  Basic Usage:
++  ------------
++
++  ```js
++  let promise = new Promise(function(resolve, reject) {
++    // on success
++    resolve(value);
+ 
+-      Advanced Example
+-      --------------
++    // on failure
++    reject(reason);
++  });
++
++  promise.then(function(value) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
+ 
+-      Synchronous Example
++  Advanced Usage:
++  ---------------
+ 
+-      ```javascript
+-      var author, books;
++  Promises shine when abstracting away asynchronous interactions such as
++  `XMLHttpRequest`s.
+ 
+-      try {
+-        author = findAuthor();
+-        books  = findBooksByAuthor(author);
++  ```js
++  function getJSON(url) {
++    return new Promise(function(resolve, reject){
++      let xhr = new XMLHttpRequest();
++
++      xhr.open('GET', url);
++      xhr.onreadystatechange = handler;
++      xhr.responseType = 'json';
++      xhr.setRequestHeader('Accept', 'application/json');
++      xhr.send();
++
++      function handler() {
++        if (this.readyState === this.DONE) {
++          if (this.status === 200) {
++            resolve(this.response);
++          } else {
++            reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
++          }
++        }
++      };
++    });
++  }
++
++  getJSON('/posts.json').then(function(json) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
++
++  Unlike callbacks, promises are great composable primitives.
++
++  ```js
++  Promise.all([
++    getJSON('/posts'),
++    getJSON('/comments')
++  ]).then(function(values){
++    values[0] // => postsJSON
++    values[1] // => commentsJSON
++
++    return values;
++  });
++  ```
++
++  @class Promise
++  @param {function} resolver
++  Useful for tooling.
++  @constructor
++*/
++function Promise(resolver) {
++  this[PROMISE_ID] = nextId();
++  this._result = this._state = undefined;
++  this._subscribers = [];
++
++  if (noop !== resolver) {
++    typeof resolver !== 'function' && needsResolver();
++    this instanceof Promise ? initializePromise(this, resolver) : needsNew();
++  }
++}
++
++Promise.all = all;
++Promise.race = race;
++Promise.resolve = resolve;
++Promise.reject = reject;
++Promise._setScheduler = setScheduler;
++Promise._setAsap = setAsap;
++Promise._asap = asap;
++
++Promise.prototype = {
++  constructor: Promise,
++
++  /**
++    The primary way of interacting with a promise is through its `then` method,
++    which registers callbacks to receive either a promise's eventual value or the
++    reason why the promise cannot be fulfilled.
++  
++    ```js
++    findUser().then(function(user){
++      // user is available
++    }, function(reason){
++      // user is unavailable, and you are given the reason why
++    });
++    ```
++  
++    Chaining
++    --------
++  
++    The return value of `then` is itself a promise.  This second, 'downstream'
++    promise is resolved with the return value of the first promise's fulfillment
++    or rejection handler, or rejected if the handler throws an exception.
++  
++    ```js
++    findUser().then(function (user) {
++      return user.name;
++    }, function (reason) {
++      return 'default name';
++    }).then(function (userName) {
++      // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
++      // will be `'default name'`
++    });
++  
++    findUser().then(function (user) {
++      throw new Error('Found user, but still unhappy');
++    }, function (reason) {
++      throw new Error('`findUser` rejected and we're unhappy');
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
++      // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
++    });
++    ```
++    If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
++  
++    ```js
++    findUser().then(function (user) {
++      throw new PedagogicalException('Upstream error');
++    }).then(function (value) {
++      // never reached
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // The `PedgagocialException` is propagated all the way down to here
++    });
++    ```
++  
++    Assimilation
++    ------------
++  
++    Sometimes the value you want to propagate to a downstream promise can only be
++    retrieved asynchronously. This can be achieved by returning a promise in the
++    fulfillment or rejection handler. The downstream promise will then be pending
++    until the returned promise is settled. This is called *assimilation*.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // The user's comments are now available
++    });
++    ```
++  
++    If the assimliated promise rejects, then the downstream promise will also reject.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // If `findCommentsByAuthor` fulfills, we'll have the value here
++    }, function (reason) {
++      // If `findCommentsByAuthor` rejects, we'll have the reason here
++    });
++    ```
++  
++    Simple Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let result;
++  
++    try {
++      result = findResult();
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++    findResult(function(result, err){
++      if (err) {
++        // failure
++      } else {
+         // success
+-      } catch(reason) {
++      }
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findResult().then(function(result){
++      // success
++    }, function(reason){
++      // failure
++    });
++    ```
++  
++    Advanced Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let author, books;
++  
++    try {
++      author = findAuthor();
++      books  = findBooksByAuthor(author);
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++  
++    function foundBooks(books) {
++  
++    }
++  
++    function failure(reason) {
++  
++    }
++  
++    findAuthor(function(author, err){
++      if (err) {
++        failure(err);
+         // failure
++      } else {
++        try {
++          findBoooksByAuthor(author, function(books, err) {
++            if (err) {
++              failure(err);
++            } else {
++              try {
++                foundBooks(books);
++              } catch(reason) {
++                failure(reason);
++              }
++            }
++          });
++        } catch(error) {
++          failure(err);
++        }
++        // success
+       }
+-      ```
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findAuthor().
++      then(findBooksByAuthor).
++      then(function(books){
++        // found books
++    }).catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method then
++    @param {Function} onFulfilled
++    @param {Function} onRejected
++    Useful for tooling.
++    @return {Promise}
++  */
++  then: then,
++
++  /**
++    `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
++    as the catch block of a try/catch statement.
++  
++    ```js
++    function findAuthor(){
++      throw new Error('couldn't find that author');
++    }
++  
++    // synchronous
++    try {
++      findAuthor();
++    } catch(reason) {
++      // something went wrong
++    }
++  
++    // async with promises
++    findAuthor().catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method catch
++    @param {Function} onRejection
++    Useful for tooling.
++    @return {Promise}
++  */
++  'catch': function _catch(onRejection) {
++    return this.then(null, onRejection);
++  }
++};
+ 
+-      Errback Example
++function polyfill() {
++    var local = undefined;
+ 
+-      ```js
++    if (typeof global !== 'undefined') {
++        local = global;
++    } else if (typeof self !== 'undefined') {
++        local = self;
++    } else {
++        try {
++            local = Function('return this')();
++        } catch (e) {
++            throw new Error('polyfill failed because global object is unavailable in this environment');
++        }
++    }
+ 
+-      function foundBooks(books) {
++    var P = local.Promise;
+ 
+-      }
++    if (P) {
++        var promiseToString = null;
++        try {
++            promiseToString = Object.prototype.toString.call(P.resolve());
++        } catch (e) {
++            // silently ignored
++        }
+ 
+-      function failure(reason) {
++        if (promiseToString === '[object Promise]' && !P.cast) {
++            return;
++        }
++    }
+ 
+-      }
++    local.Promise = Promise;
++}
+ 
+-      findAuthor(function(author, err){
+-        if (err) {
+-          failure(err);
+-          // failure
+-        } else {
+-          try {
+-            findBoooksByAuthor(author, function(books, err) {
+-              if (err) {
+-                failure(err);
+-              } else {
+-                try {
+-                  foundBooks(books);
+-                } catch(reason) {
+-                  failure(reason);
+-                }
+-              }
+-            });
+-          } catch(error) {
+-            failure(err);
+-          }
+-          // success
+-        }
+-      });
+-      ```
++polyfill();
++// Strange compat..
++Promise.polyfill = polyfill;
++Promise.Promise = Promise;
+ 
+-      Promise Example;
++return Promise;
+ 
+-      ```javascript
+-      findAuthor().
+-        then(findBooksByAuthor).
+-        then(function(books){
+-          // found books
+-      }).catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
++})));
++
++}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"_process":12}],9:[function(require,module,exports){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-      @method then
+-      @param {Function} onFulfilled
+-      @param {Function} onRejected
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      then: lib$es6$promise$then$$default,
++function EventEmitter() {
++  this._events = this._events || {};
++  this._maxListeners = this._maxListeners || undefined;
++}
++module.exports = EventEmitter;
+ 
+-    /**
+-      `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
+-      as the catch block of a try/catch statement.
++// Backwards-compat with node 0.10.x
++EventEmitter.EventEmitter = EventEmitter;
+ 
+-      ```js
+-      function findAuthor(){
+-        throw new Error('couldn't find that author');
+-      }
++EventEmitter.prototype._events = undefined;
++EventEmitter.prototype._maxListeners = undefined;
+ 
+-      // synchronous
+-      try {
+-        findAuthor();
+-      } catch(reason) {
+-        // something went wrong
+-      }
++// By default EventEmitters will print a warning if more than 10 listeners are
++// added to it. This is a useful default which helps finding memory leaks.
++EventEmitter.defaultMaxListeners = 10;
+ 
+-      // async with promises
+-      findAuthor().catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
+-
+-      @method catch
+-      @param {Function} onRejection
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      'catch': function(onRejection) {
+-        return this.then(null, onRejection);
+-      }
+-    };
+-    var lib$es6$promise$enumerator$$default = lib$es6$promise$enumerator$$Enumerator;
+-    function lib$es6$promise$enumerator$$Enumerator(Constructor, input) {
+-      this._instanceConstructor = Constructor;
+-      this.promise = new Constructor(lib$es6$promise$$internal$$noop);
++// Obviously not all Emitters should be limited to 10. This function allows
++// that to be increased. Set to zero for unlimited.
++EventEmitter.prototype.setMaxListeners = function(n) {
++  if (!isNumber(n) || n < 0 || isNaN(n))
++    throw TypeError('n must be a positive number');
++  this._maxListeners = n;
++  return this;
++};
+ 
+-      if (Array.isArray(input)) {
+-        this._input     = input;
+-        this.length     = input.length;
+-        this._remaining = input.length;
++EventEmitter.prototype.emit = function(type) {
++  var er, handler, len, args, i, listeners;
+ 
+-        this._result = new Array(this.length);
++  if (!this._events)
++    this._events = {};
+ 
+-        if (this.length === 0) {
+-          lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-        } else {
+-          this.length = this.length || 0;
+-          this._enumerate();
+-          if (this._remaining === 0) {
+-            lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-          }
+-        }
++  // If there is no 'error' event listener then throw.
++  if (type === 'error') {
++    if (!this._events.error ||
++        (isObject(this._events.error) && !this._events.error.length)) {
++      er = arguments[1];
++      if (er instanceof Error) {
++        throw er; // Unhandled 'error' event
+       } else {
+-        lib$es6$promise$$internal$$reject(this.promise, this._validationError());
++        // At least give some kind of context to the user
++        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
++        err.context = er;
++        throw err;
+       }
+     }
++  }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._validationError = function() {
+-      return new Error('Array Methods must be provided an Array');
+-    };
++  handler = this._events[type];
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._enumerate = function() {
+-      var length  = this.length;
+-      var input   = this._input;
++  if (isUndefined(handler))
++    return false;
+ 
+-      for (var i = 0; this._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        this._eachEntry(input[i], i);
+-      }
+-    };
++  if (isFunction(handler)) {
++    switch (arguments.length) {
++      // fast cases
++      case 1:
++        handler.call(this);
++        break;
++      case 2:
++        handler.call(this, arguments[1]);
++        break;
++      case 3:
++        handler.call(this, arguments[1], arguments[2]);
++        break;
++      // slower
++      default:
++        args = Array.prototype.slice.call(arguments, 1);
++        handler.apply(this, args);
++    }
++  } else if (isObject(handler)) {
++    args = Array.prototype.slice.call(arguments, 1);
++    listeners = handler.slice();
++    len = listeners.length;
++    for (i = 0; i < len; i++)
++      listeners[i].apply(this, args);
++  }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._eachEntry = function(entry, i) {
+-      var c = this._instanceConstructor;
+-      var resolve = c.resolve;
++  return true;
++};
+ 
+-      if (resolve === lib$es6$promise$promise$resolve$$default) {
+-        var then = lib$es6$promise$$internal$$getThen(entry);
++EventEmitter.prototype.addListener = function(type, listener) {
++  var m;
+ 
+-        if (then === lib$es6$promise$then$$default &&
+-            entry._state !== lib$es6$promise$$internal$$PENDING) {
+-          this._settledAt(entry._state, i, entry._result);
+-        } else if (typeof then !== 'function') {
+-          this._remaining--;
+-          this._result[i] = entry;
+-        } else if (c === lib$es6$promise$promise$$default) {
+-          var promise = new c(lib$es6$promise$$internal$$noop);
+-          lib$es6$promise$$internal$$handleMaybeThenable(promise, entry, then);
+-          this._willSettleAt(promise, i);
+-        } else {
+-          this._willSettleAt(new c(function(resolve) { resolve(entry); }), i);
+-        }
+-      } else {
+-        this._willSettleAt(resolve(entry), i);
+-      }
+-    };
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._settledAt = function(state, i, value) {
+-      var promise = this.promise;
++  if (!this._events)
++    this._events = {};
+ 
+-      if (promise._state === lib$es6$promise$$internal$$PENDING) {
+-        this._remaining--;
++  // To avoid recursion in the case that type === "newListener"! Before
++  // adding it to the listeners, first emit "newListener".
++  if (this._events.newListener)
++    this.emit('newListener', type,
++              isFunction(listener.listener) ?
++              listener.listener : listener);
+ 
+-        if (state === lib$es6$promise$$internal$$REJECTED) {
+-          lib$es6$promise$$internal$$reject(promise, value);
+-        } else {
+-          this._result[i] = value;
+-        }
+-      }
++  if (!this._events[type])
++    // Optimize the case of one listener. Don't need the extra array object.
++    this._events[type] = listener;
++  else if (isObject(this._events[type]))
++    // If we've already got an array, just append.
++    this._events[type].push(listener);
++  else
++    // Adding the second element, need to change to array.
++    this._events[type] = [this._events[type], listener];
+ 
+-      if (this._remaining === 0) {
+-        lib$es6$promise$$internal$$fulfill(promise, this._result);
++  // Check for listener leak
++  if (isObject(this._events[type]) && !this._events[type].warned) {
++    if (!isUndefined(this._maxListeners)) {
++      m = this._maxListeners;
++    } else {
++      m = EventEmitter.defaultMaxListeners;
++    }
++
++    if (m && m > 0 && this._events[type].length > m) {
++      this._events[type].warned = true;
++      console.error('(node) warning: possible EventEmitter memory ' +
++                    'leak detected. %d listeners added. ' +
++                    'Use emitter.setMaxListeners() to increase limit.',
++                    this._events[type].length);
++      if (typeof console.trace === 'function') {
++        // not supported in IE 10
++        console.trace();
+       }
+-    };
++    }
++  }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._willSettleAt = function(promise, i) {
+-      var enumerator = this;
++  return this;
++};
+ 
+-      lib$es6$promise$$internal$$subscribe(promise, undefined, function(value) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$FULFILLED, i, value);
+-      }, function(reason) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$REJECTED, i, reason);
+-      });
+-    };
+-    function lib$es6$promise$polyfill$$polyfill() {
+-      var local;
++EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+ 
+-      if (typeof global !== 'undefined') {
+-          local = global;
+-      } else if (typeof self !== 'undefined') {
+-          local = self;
+-      } else {
+-          try {
+-              local = Function('return this')();
+-          } catch (e) {
+-              throw new Error('polyfill failed because global object is unavailable in this environment');
+-          }
+-      }
++EventEmitter.prototype.once = function(type, listener) {
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-      var P = local.Promise;
++  var fired = false;
+ 
+-      if (P && Object.prototype.toString.call(P.resolve()) === '[object Promise]' && !P.cast) {
+-        return;
++  function g() {
++    this.removeListener(type, g);
++
++    if (!fired) {
++      fired = true;
++      listener.apply(this, arguments);
++    }
++  }
++
++  g.listener = listener;
++  this.on(type, g);
++
++  return this;
++};
++
++// emits a 'removeListener' event iff the listener was removed
++EventEmitter.prototype.removeListener = function(type, listener) {
++  var list, position, length, i;
++
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
++
++  if (!this._events || !this._events[type])
++    return this;
++
++  list = this._events[type];
++  length = list.length;
++  position = -1;
++
++  if (list === listener ||
++      (isFunction(list.listener) && list.listener === listener)) {
++    delete this._events[type];
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
++
++  } else if (isObject(list)) {
++    for (i = length; i-- > 0;) {
++      if (list[i] === listener ||
++          (list[i].listener && list[i].listener === listener)) {
++        position = i;
++        break;
+       }
++    }
+ 
+-      local.Promise = lib$es6$promise$promise$$default;
++    if (position < 0)
++      return this;
++
++    if (list.length === 1) {
++      list.length = 0;
++      delete this._events[type];
++    } else {
++      list.splice(position, 1);
+     }
+-    var lib$es6$promise$polyfill$$default = lib$es6$promise$polyfill$$polyfill;
+ 
+-    var lib$es6$promise$umd$$ES6Promise = {
+-      'Promise': lib$es6$promise$promise$$default,
+-      'polyfill': lib$es6$promise$polyfill$$default
+-    };
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
++  }
++
++  return this;
++};
++
++EventEmitter.prototype.removeAllListeners = function(type) {
++  var key, listeners;
++
++  if (!this._events)
++    return this;
+ 
+-    /* global define:true module:true window: true */
+-    if (typeof define === 'function' && define['amd']) {
+-      define(function() { return lib$es6$promise$umd$$ES6Promise; });
+-    } else if (typeof module !== 'undefined' && module['exports']) {
+-      module['exports'] = lib$es6$promise$umd$$ES6Promise;
+-    } else if (typeof this !== 'undefined') {
+-      this['ES6Promise'] = lib$es6$promise$umd$$ES6Promise;
++  // not listening for removeListener, no need to emit
++  if (!this._events.removeListener) {
++    if (arguments.length === 0)
++      this._events = {};
++    else if (this._events[type])
++      delete this._events[type];
++    return this;
++  }
++
++  // emit removeListener for all listeners on all events
++  if (arguments.length === 0) {
++    for (key in this._events) {
++      if (key === 'removeListener') continue;
++      this.removeAllListeners(key);
+     }
++    this.removeAllListeners('removeListener');
++    this._events = {};
++    return this;
++  }
+ 
+-    lib$es6$promise$polyfill$$default();
+-}).call(this);
++  listeners = this._events[type];
+ 
++  if (isFunction(listeners)) {
++    this.removeListener(type, listeners);
++  } else if (listeners) {
++    // LIFO order
++    while (listeners.length)
++      this.removeListener(type, listeners[listeners.length - 1]);
++  }
++  delete this._events[type];
+ 
+-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"_process":8}],11:[function(require,module,exports){
++  return this;
++};
++
++EventEmitter.prototype.listeners = function(type) {
++  var ret;
++  if (!this._events || !this._events[type])
++    ret = [];
++  else if (isFunction(this._events[type]))
++    ret = [this._events[type]];
++  else
++    ret = this._events[type].slice();
++  return ret;
++};
++
++EventEmitter.prototype.listenerCount = function(type) {
++  if (this._events) {
++    var evlistener = this._events[type];
++
++    if (isFunction(evlistener))
++      return 1;
++    else if (evlistener)
++      return evlistener.length;
++  }
++  return 0;
++};
++
++EventEmitter.listenerCount = function(emitter, type) {
++  return emitter.listenerCount(type);
++};
++
++function isFunction(arg) {
++  return typeof arg === 'function';
++}
++
++function isNumber(arg) {
++  return typeof arg === 'number';
++}
++
++function isObject(arg) {
++  return typeof arg === 'object' && arg !== null;
++}
++
++function isUndefined(arg) {
++  return arg === void 0;
++}
++
++},{}],10:[function(require,module,exports){
+ /**
+  * inspired by is-number <https://github.com/jonschlinkert/is-number>
+  * but significantly simplified and sped up by ignoring number and string constructors
+@@ -11204,7 +11314,7 @@ module.exports = function(n) {
+     return n - n < 1;
+ };
+ 
+-},{}],12:[function(require,module,exports){
++},{}],11:[function(require,module,exports){
+ module.exports = fromQuat;
+ 
+ /**
+@@ -11252,21 +11362,202 @@ function fromQuat(out, q) {
+ 
+     return out;
+ };
++},{}],12:[function(require,module,exports){
++// shim for using process in browser
++var process = module.exports = {};
++
++// cached from whatever global is present so that test runners that stub it
++// don't break things.  But we need to wrap it in a try catch in case it is
++// wrapped in strict mode code which doesn't define any globals.  It's inside a
++// function because try/catches deoptimize in certain engines.
++
++var cachedSetTimeout;
++var cachedClearTimeout;
++
++function defaultSetTimout() {
++    throw new Error('setTimeout has not been defined');
++}
++function defaultClearTimeout () {
++    throw new Error('clearTimeout has not been defined');
++}
++(function () {
++    try {
++        if (typeof setTimeout === 'function') {
++            cachedSetTimeout = setTimeout;
++        } else {
++            cachedSetTimeout = defaultSetTimout;
++        }
++    } catch (e) {
++        cachedSetTimeout = defaultSetTimout;
++    }
++    try {
++        if (typeof clearTimeout === 'function') {
++            cachedClearTimeout = clearTimeout;
++        } else {
++            cachedClearTimeout = defaultClearTimeout;
++        }
++    } catch (e) {
++        cachedClearTimeout = defaultClearTimeout;
++    }
++} ())
++function runTimeout(fun) {
++    if (cachedSetTimeout === setTimeout) {
++        //normal enviroments in sane situations
++        return setTimeout(fun, 0);
++    }
++    // if setTimeout wasn't available but was latter defined
++    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
++        cachedSetTimeout = setTimeout;
++        return setTimeout(fun, 0);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedSetTimeout(fun, 0);
++    } catch(e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
++            return cachedSetTimeout.call(null, fun, 0);
++        } catch(e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
++            return cachedSetTimeout.call(this, fun, 0);
++        }
++    }
++
++
++}
++function runClearTimeout(marker) {
++    if (cachedClearTimeout === clearTimeout) {
++        //normal enviroments in sane situations
++        return clearTimeout(marker);
++    }
++    // if clearTimeout wasn't available but was latter defined
++    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
++        cachedClearTimeout = clearTimeout;
++        return clearTimeout(marker);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedClearTimeout(marker);
++    } catch (e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
++            return cachedClearTimeout.call(null, marker);
++        } catch (e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
++            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
++            return cachedClearTimeout.call(this, marker);
++        }
++    }
++
++
++
++}
++var queue = [];
++var draining = false;
++var currentQueue;
++var queueIndex = -1;
++
++function cleanUpNextTick() {
++    if (!draining || !currentQueue) {
++        return;
++    }
++    draining = false;
++    if (currentQueue.length) {
++        queue = currentQueue.concat(queue);
++    } else {
++        queueIndex = -1;
++    }
++    if (queue.length) {
++        drainQueue();
++    }
++}
++
++function drainQueue() {
++    if (draining) {
++        return;
++    }
++    var timeout = runTimeout(cleanUpNextTick);
++    draining = true;
++
++    var len = queue.length;
++    while(len) {
++        currentQueue = queue;
++        queue = [];
++        while (++queueIndex < len) {
++            if (currentQueue) {
++                currentQueue[queueIndex].run();
++            }
++        }
++        queueIndex = -1;
++        len = queue.length;
++    }
++    currentQueue = null;
++    draining = false;
++    runClearTimeout(timeout);
++}
++
++process.nextTick = function (fun) {
++    var args = new Array(arguments.length - 1);
++    if (arguments.length > 1) {
++        for (var i = 1; i < arguments.length; i++) {
++            args[i - 1] = arguments[i];
++        }
++    }
++    queue.push(new Item(fun, args));
++    if (queue.length === 1 && !draining) {
++        runTimeout(drainQueue);
++    }
++};
++
++// v8 likes predictible objects
++function Item(fun, array) {
++    this.fun = fun;
++    this.array = array;
++}
++Item.prototype.run = function () {
++    this.fun.apply(null, this.array);
++};
++process.title = 'browser';
++process.browser = true;
++process.env = {};
++process.argv = [];
++process.version = ''; // empty string to avoid regexp issues
++process.versions = {};
++
++function noop() {}
++
++process.on = noop;
++process.addListener = noop;
++process.once = noop;
++process.off = noop;
++process.removeListener = noop;
++process.removeAllListeners = noop;
++process.emit = noop;
++
++process.binding = function (name) {
++    throw new Error('process.binding is not supported');
++};
++
++process.cwd = function () { return '/' };
++process.chdir = function (dir) {
++    throw new Error('process.chdir is not supported');
++};
++process.umask = function() { return 0; };
++
+ },{}],13:[function(require,module,exports){
+-// TinyColor v1.3.0
++// TinyColor v1.4.1
+ // https://github.com/bgrins/TinyColor
+ // Brian Grinstead, MIT License
+ 
+-(function() {
++(function(Math) {
+ 
+ var trimLeft = /^\s+/,
+     trimRight = /\s+$/,
+     tinyCounter = 0,
+-    math = Math,
+-    mathRound = math.round,
+-    mathMin = math.min,
+-    mathMax = math.max,
+-    mathRandom = math.random;
++    mathRound = Math.round,
++    mathMin = Math.min,
++    mathMax = Math.max,
++    mathRandom = Math.random;
+ 
+ function tinycolor (color, opts) {
+ 
+@@ -11374,11 +11665,11 @@ tinycolor.prototype = {
+     toHexString: function(allow3Char) {
+         return '#' + this.toHex(allow3Char);
+     },
+-    toHex8: function() {
+-        return rgbaToHex(this._r, this._g, this._b, this._a);
++    toHex8: function(allow4Char) {
++        return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
+     },
+-    toHex8String: function() {
+-        return '#' + this.toHex8();
++    toHex8String: function(allow4Char) {
++        return '#' + this.toHex8(allow4Char);
+     },
+     toRgb: function() {
+         return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
+@@ -11408,13 +11699,13 @@ tinycolor.prototype = {
+         return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
+     },
+     toFilter: function(secondColor) {
+-        var hex8String = '#' + rgbaToHex(this._r, this._g, this._b, this._a);
++        var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
+         var secondHex8String = hex8String;
+         var gradientType = this._gradientType ? "GradientType = 1, " : "";
+ 
+         if (secondColor) {
+             var s = tinycolor(secondColor);
+-            secondHex8String = s.toHex8String();
++            secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
+         }
+ 
+         return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
+@@ -11425,7 +11716,7 @@ tinycolor.prototype = {
+ 
+         var formattedString = false;
+         var hasAlpha = this._a < 1 && this._a >= 0;
+-        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "name");
++        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");
+ 
+         if (needsAlphaFormat) {
+             // Special case for "transparent", all other non-alpha formats
+@@ -11447,6 +11738,9 @@ tinycolor.prototype = {
+         if (format === "hex3") {
+             formattedString = this.toHexString(true);
+         }
++        if (format === "hex4") {
++            formattedString = this.toHex8String(true);
++        }
+         if (format === "hex8") {
+             formattedString = this.toHex8String();
+         }
+@@ -11559,6 +11853,9 @@ function inputToRGB(color) {
+ 
+     var rgb = { r: 0, g: 0, b: 0 };
+     var a = 1;
++    var s = null;
++    var v = null;
++    var l = null;
+     var ok = false;
+     var format = false;
+ 
+@@ -11567,22 +11864,22 @@ function inputToRGB(color) {
+     }
+ 
+     if (typeof color == "object") {
+-        if (color.hasOwnProperty("r") && color.hasOwnProperty("g") && color.hasOwnProperty("b")) {
++        if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
+             rgb = rgbToRgb(color.r, color.g, color.b);
+             ok = true;
+             format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
+         }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("v")) {
+-            color.s = convertToPercentage(color.s);
+-            color.v = convertToPercentage(color.v);
+-            rgb = hsvToRgb(color.h, color.s, color.v);
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
++            s = convertToPercentage(color.s);
++            v = convertToPercentage(color.v);
++            rgb = hsvToRgb(color.h, s, v);
+             ok = true;
+             format = "hsv";
+         }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("l")) {
+-            color.s = convertToPercentage(color.s);
+-            color.l = convertToPercentage(color.l);
+-            rgb = hslToRgb(color.h, color.s, color.l);
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
++            s = convertToPercentage(color.s);
++            l = convertToPercentage(color.l);
++            rgb = hslToRgb(color.h, s, l);
+             ok = true;
+             format = "hsl";
+         }
+@@ -11729,7 +12026,7 @@ function rgbToHsv(r, g, b) {
+     s = bound01(s, 100);
+     v = bound01(v, 100);
+ 
+-    var i = math.floor(h),
++    var i = Math.floor(h),
+         f = h - i,
+         p = v * (1 - s),
+         q = v * (1 - f * s),
+@@ -11764,9 +12061,29 @@ function rgbToHex(r, g, b, allow3Char) {
+ 
+ // `rgbaToHex`
+ // Converts an RGBA color plus alpha transparency to hex
+-// Assumes r, g, b and a are contained in the set [0, 255]
+-// Returns an 8 character hex
+-function rgbaToHex(r, g, b, a) {
++// Assumes r, g, b are contained in the set [0, 255] and
++// a in [0, 1]. Returns a 4 or 8 character rgba hex
++function rgbaToHex(r, g, b, a, allow4Char) {
++
++    var hex = [
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16)),
++        pad2(convertDecimalToHex(a))
++    ];
++
++    // Return a 4 character hex if possible
++    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
++        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
++    }
++
++    return hex.join("");
++}
++
++// `rgbaToArgbHex`
++// Converts an RGBA color to an ARGB Hex8 string
++// Rarely used, but required for "toFilter()"
++function rgbaToArgbHex(r, g, b, a) {
+ 
+     var hex = [
+         pad2(convertDecimalToHex(a)),
+@@ -11848,7 +12165,7 @@ function darken (color, amount) {
+ // Values outside of this range will be wrapped into this range.
+ function spin(color, amount) {
+     var hsl = tinycolor(color).toHsl();
+-    var hue = (mathRound(hsl.h) + amount) % 360;
++    var hue = (hsl.h + amount) % 360;
+     hsl.h = hue < 0 ? 360 + hue : hue;
+     return tinycolor(hsl);
+ }
+@@ -11935,26 +12252,12 @@ tinycolor.mix = function(color1, color2, amount) {
+     var rgb2 = tinycolor(color2).toRgb();
+ 
+     var p = amount / 100;
+-    var w = p * 2 - 1;
+-    var a = rgb2.a - rgb1.a;
+-
+-    var w1;
+-
+-    if (w * a == -1) {
+-        w1 = w;
+-    } else {
+-        w1 = (w + a) / (1 + w * a);
+-    }
+-
+-    w1 = (w1 + 1) / 2;
+-
+-    var w2 = 1 - w1;
+ 
+     var rgba = {
+-        r: rgb2.r * w1 + rgb1.r * w2,
+-        g: rgb2.g * w1 + rgb1.g * w2,
+-        b: rgb2.b * w1 + rgb1.b * w2,
+-        a: rgb2.a * p  + rgb1.a * (1 - p)
++        r: ((rgb2.r - rgb1.r) * p) + rgb1.r,
++        g: ((rgb2.g - rgb1.g) * p) + rgb1.g,
++        b: ((rgb2.b - rgb1.b) * p) + rgb1.b,
++        a: ((rgb2.a - rgb1.a) * p) + rgb1.a
+     };
+ 
+     return tinycolor(rgba);
+@@ -12240,7 +12543,7 @@ function bound01(n, max) {
+     }
+ 
+     // Handle floating point rounding errors
+-    if ((math.abs(n - max) < 0.000001)) {
++    if ((Math.abs(n - max) < 0.000001)) {
+         return 1;
+     }
+ 
+@@ -12310,6 +12613,7 @@ var matchers = (function() {
+     var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+ 
+     return {
++        CSS_UNIT: new RegExp(CSS_UNIT),
+         rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
+         rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
+         hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
+@@ -12318,10 +12622,18 @@ var matchers = (function() {
+         hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
+         hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+         hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
++        hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+         hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
+     };
+ })();
+ 
++// `isValidCSSUnit`
++// Take in a single string / number and check to see if it looks like a CSS unit
++// (see `matchers` above for definition).
++function isValidCSSUnit(color) {
++    return !!matchers.CSS_UNIT.exec(color);
++}
++
+ // `stringInputToObject`
+ // Permissive string parsing.  Take in a number of formats, and output an object
+ // based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
+@@ -12362,10 +12674,10 @@ function stringInputToObject(color) {
+     }
+     if ((match = matchers.hex8.exec(color))) {
+         return {
+-            a: convertHexToDecimal(match[1]),
+-            r: parseIntFromHex(match[2]),
+-            g: parseIntFromHex(match[3]),
+-            b: parseIntFromHex(match[4]),
++            r: parseIntFromHex(match[1]),
++            g: parseIntFromHex(match[2]),
++            b: parseIntFromHex(match[3]),
++            a: convertHexToDecimal(match[4]),
+             format: named ? "name" : "hex8"
+         };
+     }
+@@ -12377,6 +12689,15 @@ function stringInputToObject(color) {
+             format: named ? "name" : "hex"
+         };
+     }
++    if ((match = matchers.hex4.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1] + '' + match[1]),
++            g: parseIntFromHex(match[2] + '' + match[2]),
++            b: parseIntFromHex(match[3] + '' + match[3]),
++            a: convertHexToDecimal(match[4] + '' + match[4]),
++            format: named ? "name" : "hex8"
++        };
++    }
+     if ((match = matchers.hex3.exec(color))) {
+         return {
+             r: parseIntFromHex(match[1] + '' + match[1]),
+@@ -12418,7 +12739,7 @@ else {
+     window.tinycolor = tinycolor;
+ }
+ 
+-})();
++})(Math);
+ 
+ },{}],14:[function(require,module,exports){
+ /**
+@@ -13684,7 +14005,7 @@ function lineIntersect(x1, y1, x2, y2, x3, y3, x4, y4) {
+     return {x: x1 + a * t, y: y1 + d * t};
+ }
+ 
+-},{"../../lib":94,"../../lib/setcursor":103,"../../lib/svg_text_utils":105,"../../plotly":112,"../../plots/cartesian/axes":115,"../color":18,"../dragelement":39,"../drawing":41,"./arrow_paths":14,"./attributes":15,"d3":9,"fast-isnumeric":11}],17:[function(require,module,exports){
++},{"../../lib":94,"../../lib/setcursor":103,"../../lib/svg_text_utils":105,"../../plotly":112,"../../plots/cartesian/axes":115,"../color":18,"../dragelement":39,"../drawing":41,"./arrow_paths":14,"./attributes":15,"d3":7,"fast-isnumeric":10}],17:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -13878,7 +14199,7 @@ function cleanOne(val) {
+     return 'rgb(' + rgbStr + ')';
+ }
+ 
+-},{"./attributes":17,"fast-isnumeric":11,"tinycolor2":13}],19:[function(require,module,exports){
++},{"./attributes":17,"fast-isnumeric":10,"tinycolor2":13}],19:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -14730,7 +15051,7 @@ module.exports = function draw(gd, id) {
+     return component;
+ };
+ 
+-},{"../../lib":94,"../../lib/extend":93,"../../lib/setcursor":103,"../../plotly":112,"../../plots/cartesian/axes":115,"../../plots/cartesian/axis_defaults":116,"../../plots/cartesian/layout_attributes":124,"../../plots/cartesian/position_defaults":127,"../../plots/plots":135,"../color":18,"../dragelement":39,"../drawing":41,"../titles":81,"./attributes":19,"d3":9,"tinycolor2":13}],22:[function(require,module,exports){
++},{"../../lib":94,"../../lib/extend":93,"../../lib/setcursor":103,"../../plotly":112,"../../plots/cartesian/axes":115,"../../plots/cartesian/axis_defaults":116,"../../plots/cartesian/layout_attributes":124,"../../plots/cartesian/position_defaults":127,"../../plots/plots":135,"../color":18,"../dragelement":39,"../drawing":41,"../titles":81,"./attributes":19,"d3":7,"tinycolor2":13}],22:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -15015,7 +15336,7 @@ module.exports = function colorScaleDefaults(traceIn, traceOut, layout, coerce,
+     if(showScale) colorbarDefaults(containerIn, containerOut, layout);
+ };
+ 
+-},{"../../lib":94,"../colorbar/defaults":20,"../colorbar/has_colorbar":22,"./flip_scale":29,"./is_valid_scale":33,"fast-isnumeric":11}],29:[function(require,module,exports){
++},{"../../lib":94,"../colorbar/defaults":20,"../colorbar/has_colorbar":22,"./flip_scale":29,"./is_valid_scale":33,"fast-isnumeric":10}],29:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -15126,7 +15447,7 @@ module.exports = function hasColorscale(trace, containerStr) {
+     );
+ };
+ 
+-},{"../../lib":94,"./is_valid_scale":33,"fast-isnumeric":11}],32:[function(require,module,exports){
++},{"../../lib":94,"./is_valid_scale":33,"fast-isnumeric":10}],32:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -15265,7 +15586,7 @@ module.exports = function makeScaleFunction(scl, cmin, cmax) {
+     };
+ };
+ 
+-},{"../../lib":94,"../color":18,"d3":9,"fast-isnumeric":11,"tinycolor2":13}],36:[function(require,module,exports){
++},{"../../lib":94,"../color":18,"d3":7,"fast-isnumeric":10,"tinycolor2":13}],36:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -16267,7 +16588,7 @@ drawing.setClipUrl = function(s, localId) {
+     s.attr('clip-path', 'url(' + url + ')');
+ };
+ 
+-},{"../../constants/xmlns_namespaces":87,"../../lib":94,"../../lib/svg_text_utils":105,"../../plots/plots":135,"../../traces/scatter/make_bubble_size_func":186,"../../traces/scatter/subtypes":191,"../color":18,"../colorscale":32,"./symbol_defs":42,"d3":9,"fast-isnumeric":11}],42:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":87,"../../lib":94,"../../lib/svg_text_utils":105,"../../plots/plots":135,"../../traces/scatter/make_bubble_size_func":186,"../../traces/scatter/subtypes":191,"../color":18,"../colorscale":32,"./symbol_defs":42,"d3":7,"fast-isnumeric":10}],42:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -16743,7 +17064,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"d3":9}],43:[function(require,module,exports){
++},{"d3":7}],43:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -16905,7 +17226,7 @@ function calcOneAxis(calcTrace, trace, axis, coord) {
+     Axes.expand(axis, vals, {padded: true});
+ }
+ 
+-},{"../../plots/cartesian/axes":115,"../../plots/plots":135,"./compute_error":45,"fast-isnumeric":11}],45:[function(require,module,exports){
++},{"../../plots/cartesian/axes":115,"../../plots/plots":135,"./compute_error":45,"fast-isnumeric":10}],45:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17078,7 +17399,7 @@ module.exports = function(traceIn, traceOut, defaultColor, opts) {
+     }
+ };
+ 
+-},{"../../lib":94,"../../plots/plots":135,"./attributes":43,"fast-isnumeric":11}],47:[function(require,module,exports){
++},{"../../lib":94,"../../plots/plots":135,"./attributes":43,"fast-isnumeric":10}],47:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17258,7 +17579,7 @@ function errorCoords(d, xa, ya) {
+     return out;
+ }
+ 
+-},{"../../lib":94,"../../traces/scatter/subtypes":191,"d3":9,"fast-isnumeric":11}],49:[function(require,module,exports){
++},{"../../lib":94,"../../traces/scatter/subtypes":191,"d3":7,"fast-isnumeric":10}],49:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17295,7 +17616,7 @@ module.exports = function style(traces) {
+     });
+ };
+ 
+-},{"../color":18,"d3":9}],50:[function(require,module,exports){
++},{"../color":18,"d3":7}],50:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17649,7 +17970,7 @@ module.exports = function draw(gd) {
+     imagesAbove.each(applyAttributes);
+ };
+ 
+-},{"../../plots/cartesian/axes":115,"../drawing":41,"d3":9}],53:[function(require,module,exports){
++},{"../../plots/cartesian/axes":115,"../drawing":41,"d3":7}],53:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17766,6 +18087,13 @@ module.exports = {
+         
+         
+     },
++    horizontalspacing: {
++        valType: 'enumerated',
++        values: ['column', 'wrapped'],
++        dflt: ['column'],
++        
++        
++    },
+     traceorder: {
+         valType: 'flaglist',
+         flags: ['reversed', 'grouped'],
+@@ -17855,6 +18183,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+ 
+     var visibleTraces = 0,
+         defaultOrder = 'normal',
++        defaultHorizontalSpacing = 'column',
+         defaultX,
+         defaultY,
+         defaultXAnchor,
+@@ -17919,6 +18248,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+     coerce('xanchor', defaultXAnchor);
+     coerce('y', defaultY);
+     coerce('yanchor', defaultYAnchor);
++    coerce('horizontalspacing', defaultHorizontalSpacing);
+     Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
+ };
+ 
+@@ -18399,7 +18729,8 @@ function computeLegendDimensions(gd, groups, traces) {
+     var fullLayout = gd._fullLayout,
+         opts = fullLayout.legend,
+         borderwidth = opts.borderwidth,
+-        isGrouped = helpers.isGrouped(opts);
++        isGrouped = helpers.isGrouped(opts),
++        isHorizontalColumn = helpers.isHorizontalColumn(opts);
+ 
+     if(helpers.isVertical(opts)) {
+         if(isGrouped) {
+@@ -18506,7 +18837,7 @@ function computeLegendDimensions(gd, groups, traces) {
+         traces.each(function(d) {
+ 
+             var legendItem = d[0],
+-                traceWidth = maxTraceWidth,
++                traceWidth = isHorizontalColumn ? maxTraceWidth : 40 + d[0],
+                 traceGap = opts.tracegroupgap || 5;
+ 
+             if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
+@@ -18595,7 +18926,7 @@ function expandHorizontalMargin(gd) {
+     });
+ }
+ 
+-},{"../../lib":94,"../../plotly":112,"../../plots/plots":135,"../color":18,"../dragelement":39,"../drawing":41,"./anchor_utils":54,"./constants":56,"./get_legend_data":59,"./helpers":60,"./style":62,"d3":9}],59:[function(require,module,exports){
++},{"../../lib":94,"../../plotly":112,"../../plots/plots":135,"../color":18,"../dragelement":39,"../drawing":41,"./anchor_utils":54,"./constants":56,"./get_legend_data":59,"./helpers":60,"./style":62,"d3":7}],59:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -18732,6 +19063,9 @@ exports.isReversed = function isReversed(legendLayout) {
+     return (legendLayout.traceorder || '').indexOf('reversed') !== -1;
+ };
+ 
++exports.isHorizontalColumn = function isReversed(legendLayout) {
++    return legendLayout.horizontalspacing === 'column';
++};
+ },{"../../plots/plots":135}],61:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+@@ -18977,7 +19311,7 @@ function stylePies(d) {
+     if(pts.size()) pts.call(stylePie, d[0], trace);
+ }
+ 
+-},{"../../lib":94,"../../plots/plots":135,"../../traces/pie/style_one":170,"../../traces/scatter/subtypes":191,"../color":18,"../drawing":41,"d3":9}],63:[function(require,module,exports){
++},{"../../lib":94,"../../plots/plots":135,"../../traces/pie/style_one":170,"../../traces/scatter/subtypes":191,"../color":18,"../drawing":41,"d3":7}],63:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -19775,7 +20109,7 @@ function createModeBar(gd, buttons) {
+ 
+ module.exports = createModeBar;
+ 
+-},{"../../../build/ploticon":2,"../../lib":94,"d3":9}],65:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":94,"d3":7}],65:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -20529,7 +20863,7 @@ function reposition(gd, buttons, opts, axName) {
+     });
+ }
+ 
+-},{"../../lib/svg_text_utils":105,"../../plotly":112,"../../plots/cartesian/axis_ids":117,"../../plots/plots":135,"../color":18,"../drawing":41,"../legend/anchor_utils":54,"./constants":68,"./get_update_object":71,"d3":9}],71:[function(require,module,exports){
++},{"../../lib/svg_text_utils":105,"../../plotly":112,"../../plots/cartesian/axis_ids":117,"../../plots/plots":135,"../color":18,"../drawing":41,"../legend/anchor_utils":54,"./constants":68,"./get_update_object":71,"d3":7}],71:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -20587,7 +20921,7 @@ function getXRange(axisLayout, buttonLayout) {
+     return [range0, range1];
+ }
+ 
+-},{"d3":9}],72:[function(require,module,exports){
++},{"d3":7}],72:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -21276,7 +21610,7 @@ function makeScatter(trace, pointPairs, w, h) {
+     return [line, markers, fill];
+ }
+ 
+-},{"../../constants/xmlns_namespaces":87,"../../lib":94,"../drawing":41,"../drawing/symbol_defs":42,"./helpers":76,"d3":9}],79:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":87,"../../lib":94,"../drawing":41,"../drawing/symbol_defs":42,"./helpers":76,"d3":7}],79:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -22157,7 +22491,7 @@ function shapeBounds(ax, v0, v1, path, paramsToUse) {
+     if(max >= min) return [min, max];
+ }
+ 
+-},{"../../lib":94,"../../lib/setcursor":103,"../../plotly":112,"../../plots/cartesian/axes":115,"../color":18,"../dragelement":39,"../drawing":41,"./attributes":79,"fast-isnumeric":11}],81:[function(require,module,exports){
++},{"../../lib":94,"../../lib/setcursor":103,"../../plotly":112,"../../plots/cartesian/axes":115,"../color":18,"../dragelement":39,"../drawing":41,"./attributes":79,"fast-isnumeric":10}],81:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -22387,7 +22721,7 @@ Titles.draw = function(gd, titleClass, options) {
+     el.classed('js-placeholder', isplaceholder);
+ };
+ 
+-},{"../../lib":94,"../../lib/svg_text_utils":105,"../../plotly":112,"../../plots/plots":135,"../color":18,"../drawing":41,"d3":9,"fast-isnumeric":11}],82:[function(require,module,exports){
++},{"../../lib":94,"../../lib/svg_text_utils":105,"../../plotly":112,"../../plots/plots":135,"../color":18,"../drawing":41,"d3":7,"fast-isnumeric":10}],82:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -23135,7 +23469,7 @@ function clearPushMargins(gd) {
+     }
+ }
+ 
+-},{"../../lib":94,"../../lib/svg_text_utils":105,"../../plotly":112,"../../plots/plots":135,"../color":18,"../drawing":41,"../legend/anchor_utils":54,"./constants":83,"d3":9}],86:[function(require,module,exports){
++},{"../../lib":94,"../../lib/svg_text_utils":105,"../../plotly":112,"../../plots/plots":135,"../color":18,"../drawing":41,"../legend/anchor_utils":54,"./constants":83,"d3":7}],86:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -23228,7 +23562,7 @@ exports.Queue = Plotly.Queue;
+ // export d3 used in the bundle
+ exports.d3 = require('d3');
+ 
+-},{"../build/ploticon":2,"./plot_api/set_plot_config":109,"./plot_api/to_image":110,"./plot_api/validate":111,"./plotly":112,"./snapshot/download":142,"d3":9}],89:[function(require,module,exports){
++},{"../build/ploticon":2,"./plot_api/set_plot_config":109,"./plot_api/to_image":110,"./plot_api/validate":111,"./plotly":112,"./snapshot/download":142,"d3":7}],89:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -23571,7 +23905,7 @@ exports.validate = function(value, opts) {
+     return out !== failed;
+ };
+ 
+-},{"../components/colorscale/get_scale":30,"../components/colorscale/scales":36,"./nested_property":98,"fast-isnumeric":11,"tinycolor2":13}],91:[function(require,module,exports){
++},{"../components/colorscale/get_scale":30,"../components/colorscale/scales":36,"./nested_property":98,"fast-isnumeric":10,"tinycolor2":13}],91:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -23910,7 +24244,7 @@ exports.parseDate = function(v) {
+     return out;
+ };
+ 
+-},{"../lib":94,"d3":9,"fast-isnumeric":11}],92:[function(require,module,exports){
++},{"../lib":94,"d3":7,"fast-isnumeric":10}],92:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -24044,7 +24378,7 @@ var Events = {
+ 
+ module.exports = Events;
+ 
+-},{"events":7}],93:[function(require,module,exports){
++},{"events":9}],93:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -24778,7 +25112,7 @@ lib.numSeparate = function(value, separators) {
+     return x1 + x2;
+ };
+ 
+-},{"./coerce":90,"./dates":91,"./extend":93,"./is_plain_object":95,"./loggers":96,"./matrix":97,"./nested_property":98,"./notifier":99,"./search":102,"./stats":104,"d3":9}],95:[function(require,module,exports){
++},{"./coerce":90,"./dates":91,"./extend":93,"./is_plain_object":95,"./loggers":96,"./matrix":97,"./nested_property":98,"./notifier":99,"./search":102,"./stats":104,"d3":7}],95:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -25240,7 +25574,7 @@ function badContainer(container, propStr, propParts) {
+     };
+ }
+ 
+-},{"fast-isnumeric":11}],99:[function(require,module,exports){
++},{"fast-isnumeric":10}],99:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -25317,7 +25651,7 @@ module.exports = function(text, displayLength) {
+         });
+ };
+ 
+-},{"d3":9,"fast-isnumeric":11}],100:[function(require,module,exports){
++},{"d3":7,"fast-isnumeric":10}],100:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -25880,7 +26214,7 @@ exports.roundUp = function(val, arrayIn, reverse) {
+     return arrayIn[low];
+ };
+ 
+-},{"../lib":94,"fast-isnumeric":11}],103:[function(require,module,exports){
++},{"../lib":94,"fast-isnumeric":10}],103:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -25999,7 +26333,7 @@ exports.interp = function(arr, n) {
+     return frac * arr[Math.ceil(n)] + (1 - frac) * arr[Math.floor(n)];
+ };
+ 
+-},{"fast-isnumeric":11}],105:[function(require,module,exports){
++},{"fast-isnumeric":10}],105:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -26500,7 +26834,7 @@ util.makeEditable = function(context, _delegate, options) {
+     return d3.rebind(this, dispatch, 'on');
+ };
+ 
+-},{"../constants/xmlns_namespaces":87,"../lib":94,"../plotly":112,"d3":9}],106:[function(require,module,exports){
++},{"../constants/xmlns_namespaces":87,"../lib":94,"../plotly":112,"d3":7}],106:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -29615,7 +29949,7 @@ function drawMainTitle(gd) {
+     });
+ }
+ 
+-},{"../components/color":18,"../components/drawing":41,"../components/errorbars":47,"../components/images":53,"../components/legend":61,"../components/modebar/manage":65,"../components/rangeselector":72,"../components/rangeslider":77,"../components/shapes":80,"../components/titles":81,"../components/updatemenus":86,"../constants/xmlns_namespaces":87,"../lib":94,"../lib/events":92,"../lib/queue":101,"../plotly":112,"../plots/cartesian/graph_interact":122,"../plots/plots":135,"d3":9,"fast-isnumeric":11,"gl-mat4/fromQuat":12}],107:[function(require,module,exports){
++},{"../components/color":18,"../components/drawing":41,"../components/errorbars":47,"../components/images":53,"../components/legend":61,"../components/modebar/manage":65,"../components/rangeselector":72,"../components/rangeslider":77,"../components/shapes":80,"../components/titles":81,"../components/updatemenus":86,"../constants/xmlns_namespaces":87,"../lib":94,"../lib/events":92,"../lib/queue":101,"../plotly":112,"../plots/cartesian/graph_interact":122,"../plots/plots":135,"d3":7,"fast-isnumeric":10,"gl-mat4/fromQuat":11}],107:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -30203,7 +30537,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":94,"../plotly":112,"../snapshot":144,"fast-isnumeric":11}],111:[function(require,module,exports){
++},{"../lib":94,"../plotly":112,"../snapshot":144,"fast-isnumeric":10}],111:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -30691,7 +31025,7 @@ exports.PlotSchema = require('./plot_api/plot_schema');
+ // imaging routines
+ exports.Snapshot = require('./snapshot');
+ 
+-},{"../build/plotcss":1,"./components/annotations":16,"./components/color":18,"./components/colorbar":23,"./components/colorscale":32,"./components/drawing":41,"./components/errorbars":47,"./components/images":53,"./components/legend":61,"./components/modebar":64,"./components/shapes":80,"./components/updatemenus":86,"./fonts/mathjax_config":89,"./lib":94,"./lib/queue":101,"./lib/svg_text_utils":105,"./plot_api/plot_api":106,"./plot_api/plot_config":107,"./plot_api/plot_schema":108,"./plots/cartesian/axes":115,"./plots/cartesian/graph_interact":122,"./plots/plots":135,"./plots/polar/micropolar":138,"./snapshot":144,"./traces/scatter":182,"es6-promise":10}],113:[function(require,module,exports){
++},{"../build/plotcss":1,"./components/annotations":16,"./components/color":18,"./components/colorbar":23,"./components/colorscale":32,"./components/drawing":41,"./components/errorbars":47,"./components/images":53,"./components/legend":61,"./components/modebar":64,"./components/shapes":80,"./components/updatemenus":86,"./fonts/mathjax_config":89,"./lib":94,"./lib/queue":101,"./lib/svg_text_utils":105,"./plot_api/plot_api":106,"./plot_api/plot_config":107,"./plot_api/plot_schema":108,"./plots/cartesian/axes":115,"./plots/cartesian/graph_interact":122,"./plots/plots":135,"./plots/polar/micropolar":138,"./snapshot":144,"./traces/scatter":182,"es6-promise":8}],113:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -30974,14 +31308,27 @@ axes.getAutoRange = function(ax) {
+     }
+ 
+     if(minmin === maxmax) {
+-        newRange = axReverse ?
+-            [minmin + 1, ax.rangemode !== 'normal' ? 0 : minmin - 1] :
+-            [ax.rangemode !== 'normal' ? 0 : minmin - 1, minmin + 1];
++        var lower = minmin - 1;
++        var upper = minmin + 1;
++        if(ax.rangemode === 'tozero') {
++            newRange = minmin < 0 ? [lower, 0] : [0, upper];
++        }
++        else if(ax.rangemode === 'nonnegative') {
++            newRange = [Math.max(0, lower), Math.max(0, upper)];
++        }
++        else {
++            newRange = [lower, upper];
++        }
+     }
+     else if(mbest) {
+         if(ax.type === 'linear' || ax.type === '-') {
+-            if(ax.rangemode === 'tozero' && minbest.val >= 0) {
+-                minbest = {val: 0, pad: 0};
++            if(ax.rangemode === 'tozero') {
++                if(minbest.val >= 0) {
++                    minbest = {val: 0, pad: 0};
++                }
++                if(maxbest.val <= 0) {
++                    maxbest = {val: 0, pad: 0};
++                }
+             }
+             else if(ax.rangemode === 'nonnegative') {
+                 if(minbest.val - mbest * minbest.pad < 0) {
+@@ -30995,22 +31342,39 @@ axes.getAutoRange = function(ax) {
+             // in case it changed again...
+             mbest = (maxbest.val - minbest.val) /
+                 (ax._length - minbest.pad - maxbest.pad);
++
+         }
+ 
+         newRange = [
+             minbest.val - mbest * minbest.pad,
+             maxbest.val + mbest * maxbest.pad
+         ];
++    }
+ 
+-        // don't let axis have zero size
+-        if(newRange[0] === newRange[1]) {
++    // don't let axis have zero size, while still respecting tozero and nonnegative
++    if(newRange[0] === newRange[1]) {
++        if(ax.rangemode === 'tozero') {
++            if(newRange[0] < 0) {
++                newRange = [newRange[0], 0];
++            }
++            else if(newRange[0] > 0) {
++                newRange = [0, newRange[0]];
++            }
++            else {
++                newRange = [0, 1];
++            }
++        }
++        else {
+             newRange = [newRange[0] - 1, newRange[0] + 1];
++            if(ax.rangemode === 'nonnegative') {
++                newRange[0] = Math.max(0, newRange[0]);
++            }
+         }
++    }
+ 
+-        // maintain reversal
+-        if(axReverse) {
+-            newRange.reverse();
+-        }
++    // maintain reversal
++    if(axReverse) {
++        newRange.reverse();
+     }
+ 
+     return newRange;
+@@ -32793,7 +33157,7 @@ function swapAxisAttrs(layout, key, xFullAxes, yFullAxes) {
+ // rather than built-in % which gives a negative value for negative v
+ function mod(v, d) { return ((v % d) + d) % d; }
+ 
+-},{"../../components/color":18,"../../components/drawing":41,"../../components/titles":81,"../../lib":94,"../../lib/svg_text_utils":105,"../../plotly":112,"./axis_ids":117,"./layout_attributes":124,"./layout_defaults":125,"./set_convert":129,"d3":9,"fast-isnumeric":11}],116:[function(require,module,exports){
++},{"../../components/color":18,"../../components/drawing":41,"../../components/titles":81,"../../lib":94,"../../lib/svg_text_utils":105,"../../plotly":112,"./axis_ids":117,"./layout_attributes":124,"./layout_defaults":125,"./set_convert":129,"d3":7,"fast-isnumeric":10}],116:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -33076,7 +33440,7 @@ function category(a) {
+     return curvecats > curvenums * 2;
+ }
+ 
+-},{"../../components/color/attributes":17,"../../lib":94,"../plots":135,"./axis_ids":117,"./category_order_defaults":118,"./clean_datum":119,"./layout_attributes":124,"./ordered_categories":126,"./set_convert":129,"./tick_label_defaults":130,"./tick_mark_defaults":131,"./tick_value_defaults":132,"fast-isnumeric":11,"tinycolor2":13}],117:[function(require,module,exports){
++},{"../../components/color/attributes":17,"../../lib":94,"../plots":135,"./axis_ids":117,"./category_order_defaults":118,"./clean_datum":119,"./layout_attributes":124,"./ordered_categories":126,"./set_convert":129,"./tick_label_defaults":130,"./tick_mark_defaults":131,"./tick_value_defaults":132,"fast-isnumeric":10,"tinycolor2":13}],117:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -33270,7 +33634,7 @@ module.exports = function cleanDatum(c) {
+     return c;
+ };
+ 
+-},{"../../lib":94,"fast-isnumeric":11}],120:[function(require,module,exports){
++},{"../../lib":94,"fast-isnumeric":10}],120:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -34037,7 +34401,7 @@ function isSelectOrLasso(dragmode) {
+     return modes.indexOf(dragmode) !== -1;
+ }
+ 
+-},{"../../components/color":18,"../../components/dragelement":39,"../../components/drawing":41,"../../lib":94,"../../lib/setcursor":103,"../../lib/svg_text_utils":105,"../../plotly":112,"./axes":115,"./constants":120,"./select":128,"d3":9,"tinycolor2":13}],122:[function(require,module,exports){
++},{"../../components/color":18,"../../components/dragelement":39,"../../components/drawing":41,"../../lib":94,"../../lib/setcursor":103,"../../lib/svg_text_utils":105,"../../plotly":112,"./axes":115,"./constants":120,"./select":128,"d3":7,"tinycolor2":13}],122:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -35379,7 +35743,7 @@ fx.inbox = function(v0, v1) {
+     return Infinity;
+ };
+ 
+-},{"../../components/color":18,"../../components/dragelement":39,"../../components/drawing":41,"../../lib":94,"../../lib/events":92,"../../lib/svg_text_utils":105,"./axes":115,"./constants":120,"./dragbox":121,"d3":9,"fast-isnumeric":11,"tinycolor2":13}],123:[function(require,module,exports){
++},{"../../components/color":18,"../../components/dragelement":39,"../../components/drawing":41,"../../lib":94,"../../lib/events":92,"../../lib/svg_text_utils":105,"./axes":115,"./constants":120,"./dragbox":121,"d3":7,"fast-isnumeric":10,"tinycolor2":13}],123:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -36063,7 +36427,7 @@ module.exports = function orderedCategories(axisLetter, categoryorder, categorya
+     }
+ };
+ 
+-},{"d3":9}],127:[function(require,module,exports){
++},{"d3":7}],127:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -36128,7 +36492,7 @@ module.exports = function handlePositionDefaults(containerIn, containerOut, coer
+     return containerOut;
+ };
+ 
+-},{"../../lib":94,"fast-isnumeric":11}],128:[function(require,module,exports){
++},{"../../lib":94,"fast-isnumeric":10}],128:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -36572,7 +36936,7 @@ module.exports = function setConvert(ax) {
+     ax._forceTick0 = null;
+ };
+ 
+-},{"../../lib":94,"./axis_ids":117,"./clean_datum":119,"./constants":120,"d3":9,"fast-isnumeric":11}],130:[function(require,module,exports){
++},{"../../lib":94,"./axis_ids":117,"./clean_datum":119,"./constants":120,"d3":7,"fast-isnumeric":10}],130:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -36729,7 +37093,7 @@ module.exports = function handleTickValueDefaults(containerIn, containerOut, coe
+     }
+ };
+ 
+-},{"fast-isnumeric":11}],133:[function(require,module,exports){
++},{"fast-isnumeric":10}],133:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -38116,7 +38480,7 @@ plots.graphJson = function(gd, dataonly, mode, output, useDefaults) {
+     return (output === 'object') ? obj : JSON.stringify(obj);
+ };
+ 
+-},{"../components/color":18,"../lib":94,"../plotly":112,"./attributes":113,"./font_attributes":133,"./layout_attributes":134,"d3":9,"fast-isnumeric":11}],136:[function(require,module,exports){
++},{"../components/color":18,"../lib":94,"../plotly":112,"./attributes":113,"./font_attributes":133,"./layout_attributes":134,"d3":7,"fast-isnumeric":10}],136:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -39679,7 +40043,7 @@ var extendDeepAll = Plotly.Lib.extendDeepAll;
+     return exports;
+ };
+ 
+-},{"../../plotly":112,"./micropolar_manager":139,"d3":9}],139:[function(require,module,exports){
++},{"../../plotly":112,"./micropolar_manager":139,"d3":7}],139:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -39762,7 +40126,7 @@ manager.fillLayout = function(_gd) {
+     _gd._fullLayout = extendDeepAll(dflts, _gd.layout);
+ };
+ 
+-},{"../../plotly":112,"./undo_manager":140,"d3":9}],140:[function(require,module,exports){
++},{"../../plotly":112,"./undo_manager":140,"d3":7}],140:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -40294,7 +40658,7 @@ function svgToImg(opts) {
+ 
+ module.exports = svgToImg;
+ 
+-},{"../lib":94,"events":7}],146:[function(require,module,exports){
++},{"../lib":94,"events":9}],146:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -40373,7 +40737,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":94,"../plotly":112,"events":7}],147:[function(require,module,exports){
++},{"../lib":94,"../plotly":112,"events":9}],147:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -40485,7 +40849,7 @@ module.exports = function toSVG(gd, format) {
+     return s;
+ };
+ 
+-},{"../components/color":18,"../components/drawing":41,"../constants/xmlns_namespaces":87,"../lib/svg_text_utils":105,"d3":9}],148:[function(require,module,exports){
++},{"../components/color":18,"../components/drawing":41,"../constants/xmlns_namespaces":87,"../lib/svg_text_utils":105,"d3":7}],148:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -40646,7 +41010,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../components/colorscale/calc":25,"../../components/colorscale/has_colorscale":31,"../../plots/cartesian/axes":115,"fast-isnumeric":11}],151:[function(require,module,exports){
++},{"../../components/colorscale/calc":25,"../../components/colorscale/has_colorscale":31,"../../plots/cartesian/axes":115,"fast-isnumeric":10}],151:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -41029,7 +41393,7 @@ module.exports = function plot(gd, plotinfo, cdbar) {
+ 
+ };
+ 
+-},{"../../components/color":18,"../../components/errorbars":47,"../../lib":94,"./arrays_to_calcdata":148,"d3":9,"fast-isnumeric":11}],157:[function(require,module,exports){
++},{"../../components/color":18,"../../components/errorbars":47,"../../lib":94,"./arrays_to_calcdata":148,"d3":7,"fast-isnumeric":10}],157:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -41260,7 +41624,7 @@ module.exports = function setPositions(gd, plotinfo) {
+     });
+ };
+ 
+-},{"../../lib":94,"../../plots/cartesian/axes":115,"../../plots/plots":135,"fast-isnumeric":11}],158:[function(require,module,exports){
++},{"../../lib":94,"../../plots/cartesian/axes":115,"../../plots/plots":135,"fast-isnumeric":10}],158:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -41339,7 +41703,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/color":18,"../../components/drawing":41,"../../components/errorbars":47,"d3":9}],159:[function(require,module,exports){
++},{"../../components/color":18,"../../components/drawing":41,"../../components/errorbars":47,"d3":7}],159:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -41795,7 +42159,7 @@ function nextDefaultColor(index) {
+     return pieDefaultColors[index % pieDefaultColors.length];
+ }
+ 
+-},{"../../components/color":18,"./helpers":164,"fast-isnumeric":11,"tinycolor2":13}],163:[function(require,module,exports){
++},{"../../components/color":18,"./helpers":164,"fast-isnumeric":10,"tinycolor2":13}],163:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -42677,7 +43041,7 @@ function maxExtent(tilt, tiltAxisFraction, depth) {
+         2 * Math.sqrt(1 - sinTilt * sinTilt * tiltAxisFraction * tiltAxisFraction));
+ }
+ 
+-},{"../../components/color":18,"../../components/drawing":41,"../../lib/svg_text_utils":105,"../../plots/cartesian/graph_interact":122,"./helpers":164,"d3":9}],169:[function(require,module,exports){
++},{"../../components/color":18,"../../components/drawing":41,"../../lib/svg_text_utils":105,"../../plots/cartesian/graph_interact":122,"./helpers":164,"d3":7}],169:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -42706,7 +43070,7 @@ module.exports = function style(gd) {
+     });
+ };
+ 
+-},{"./style_one":170,"d3":9}],170:[function(require,module,exports){
++},{"./style_one":170,"d3":7}],170:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43148,7 +43512,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":94,"../../plots/cartesian/axes":115,"./colorscale_calc":176,"./subtypes":191,"fast-isnumeric":11}],174:[function(require,module,exports){
++},{"../../lib":94,"../../plots/cartesian/axes":115,"./colorscale_calc":176,"./subtypes":191,"fast-isnumeric":10}],174:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43242,7 +43606,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(marker.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":21,"../../components/colorscale/get_scale":30,"../../lib":94,"../../plots/plots":135,"d3":9,"fast-isnumeric":11}],176:[function(require,module,exports){
++},{"../../components/colorbar/draw":21,"../../components/colorscale/get_scale":30,"../../lib":94,"../../plots/plots":135,"d3":7,"fast-isnumeric":10}],176:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43936,7 +44300,7 @@ module.exports = function makeBubbleSizeFn(trace) {
+     };
+ };
+ 
+-},{"fast-isnumeric":11}],187:[function(require,module,exports){
++},{"fast-isnumeric":10}],187:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44289,7 +44653,7 @@ function selectMarkers(gd, plotinfo, cdscatter) {
+     });
+ }
+ 
+-},{"../../components/drawing":41,"../../components/errorbars":47,"../../lib":94,"../../lib/polygon":100,"./arrays_to_calcdata":171,"./line_points":184,"./subtypes":191,"d3":9}],189:[function(require,module,exports){
++},{"../../components/drawing":41,"../../components/errorbars":47,"../../lib":94,"../../lib/polygon":100,"./arrays_to_calcdata":171,"./line_points":184,"./subtypes":191,"d3":7}],189:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44402,7 +44766,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/drawing":41,"../../components/errorbars":47,"d3":9}],191:[function(require,module,exports){
++},{"../../components/drawing":41,"../../components/errorbars":47,"d3":7}],191:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+diff --git a/dist/plotly-basic.min.js b/dist/plotly-basic.min.js
+index d9a3c65..d1bb5de 100644
+--- a/dist/plotly-basic.min.js
++++ b/dist/plotly-basic.min.js
+@@ -4,21 +4,21 @@
+ * All rights reserved.
+ * Licensed under the MIT license
+ */
+-!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var e;e="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,e.Plotly=t()}}(function(){var t;return function e(t,n,r){function a(i,l){if(!n[i]){if(!t[i]){var s="function"==typeof require&&require;if(!l&&s)return s(i,!0);if(o)return o(i,!0);var c=new Error("Cannot find module '"+i+"'");throw c.code="MODULE_NOT_FOUND",c}var u=n[i]={exports:{}};t[i][0].call(u.exports,function(e){var n=t[i][1][e];return a(n?n:e)},u,u.exports,e,t,n,r)}return n[i].exports}for(var o="function"==typeof require&&require,i=0;i<r.length;i++)a(r[i]);return a}({1:[function(t,e,n){"use strict";var r=t("../src/plotly"),a={"X,X div":"font-family:'Open Sans', verdana, arial, sans-serif;margin:0;padding:0;","X input,X button":"font-family:'Open Sans', verdana, arial, sans-serif;","X input:focus,X 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r=t("../../lib"),a=t("./attributes"),o=t("./constants"),i=t("./subtypes"),l=t("./xy_defaults"),s=t("./marker_defaults"),c=t("./line_defaults"),u=t("./line_shape_defaults"),f=t("./text_defaults"),d=t("./fillcolor_defaults"),h=t("../../components/errorbars/defaults");e.exports=function(t,e,n,p){function g(n,o){return r.coerce(t,e,a,n,o)}var v=l(t,e,g),m=v<o.PTS_LINESONLY?"lines+markers":"lines";if(!v)return void(e.visible=!1);g("text"),g("mode",m),i.hasLines(e)&&(c(t,e,n,p,g),u(t,e,g),g("connectgaps")),i.hasMarkers(e)&&s(t,e,n,p,g),i.hasText(e)&&f(t,e,p,g);var y=[];(i.hasMarkers(e)||i.hasText(e))&&(g("marker.maxdisplayed"),y.push("points")),g("fill"),"none"!==e.fill&&(d(t,e,n,g),i.hasLines(e)||u(t,e,g)),"tonext"!==e.fill&&"toself"!==e.fill||y.push("fills"),g("hoveron",y.join("+")||"points"),h(t,e,n,{axis:"y"}),h(t,e,n,{axis:"x",inherit:"y"})}},{"../../components/errorbars/defaults":46,"../../lib":94,"./attributes":172,"./constants":177,"./fillcolor_defaults":179,"./line_defaults":183,"./line_shape_defaults":185,"./marker_defaults":187,"./subtypes":191,"./text_defaults":192,"./xy_defaults":193}],179:[function(t,e,n){"use strict";var r=t("../../components/color");e.exports=function(t,e,n,a){var o=!1;if(e.marker){var i=e.marker.color,l=(e.marker.line||{}).color;i&&!Array.isArray(i)?o=i:l&&!Array.isArray(l)&&(o=l)}a("fillcolor",r.addOpacity((e.line||{}).color||o||n,.5))}},{"../../components/color":18}],180:[function(t,e,n){"use strict";var r=t("../../components/color"),a=t("./subtypes");e.exports=function(t,e){var n,o;if("lines"===t.mode)return n=t.line.color,n&&r.opacity(n)?n:t.fillcolor;if("none"===t.mode)return t.fill?t.fillcolor:"";var i=e.mcc||(t.marker||{}).color,l=e.mlcc||((t.marker||{}).line||{}).color;return o=i&&r.opacity(i)?i:l&&r.opacity(l)&&(e.mlw||((t.marker||{}).line||{}).width)?l:"",o?r.opacity(o)<.3?r.addOpacity(o,.3):o:(n=(t.line||{}).color,n&&r.opacity(n)&&a.hasLines(t)&&t.line.width?n:t.fillcolor)}},{"../../components/color":18,"./subtypes":191}],181:[function(t,e,n){"use strict";var r=t("../../lib"),a=t("../../plots/cartesian/graph_interact"),o=t("../../plots/cartesian/constants"),i=t("../../components/errorbars"),l=t("./get_trace_color"),s=t("../../components/color");e.exports=function(t,e,n,c){var u=t.cd,f=u[0].trace,d=t.xa,h=t.ya,p=d.c2p(e),g=h.c2p(n),v=[p,g];if(-1!==f.hoveron.indexOf("points")){var m=function(t){var e=Math.max(3,t.mrc||0);return Math.max(Math.abs(d.c2p(t.x)-p)-e,1-3/e)},y=function(t){var e=Math.max(3,t.mrc||0);return Math.max(Math.abs(h.c2p(t.y)-g)-e,1-3/e)},x=function(t){var e=Math.max(3,t.mrc||0),n=d.c2p(t.x)-p,r=h.c2p(t.y)-g;return Math.max(Math.sqrt(n*n+r*r)-e,1-3/e)},b=a.getDistanceFunction(c,m,y,x);if(a.getClosest(u,b,t),t.index!==!1){var _=u[t.index],w=d.c2p(_.x,!0),k=h.c2p(_.y,!0),M=_.mrc||1;return r.extendFlat(t,{color:l(f,_),x0:w-M,x1:w+M,xLabelVal:_.x,y0:k-M,y1:k+M,yLabelVal:_.y}),_.tx?t.text=_.tx:f.text&&(t.text=f.text),i.hoverInfo(_,f,t),[t]}}if(-1!==f.hoveron.indexOf("fills")&&f._polygons){var A,T,L,z,S,C,E,O,P,N=f._polygons,D=[],I=!1,R=1/0,j=-(1/0),F=1/0,q=-(1/0);for(A=0;A<N.length;A++)L=N[A],L.contains(v)&&(I=!I,D.push(L),F=Math.min(F,L.ymin),q=Math.max(q,L.ymax));if(I){F=Math.max(F,0),q=Math.min(q,h._length);var B=(F+q)/2;for(A=0;A<D.length;A++)for(z=D[A].pts,T=1;T<z.length;T++)O=z[T-1][1],P=z[T][1],O>B!=P>=B&&(C=z[T-1][0],E=z[T][0],S=C+(E-C)*(B-O)/(P-O),R=Math.min(R,S),j=Math.max(j,S));R=Math.max(R,0),j=Math.min(j,d._length);var H=s.defaultLine;return 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e=C.select(t),n=t._fullLayout;if(n._container=e.selectAll(".plot-container").data([0]),n._container.enter().insert("div",":first-child").classed("plot-container",!0).classed("plotly",!0),n._paperdiv=n._container.selectAll(".svg-container").data([0]),n._paperdiv.enter().append("div").classed("svg-container",!0).style("position","relative"),"initial"===n.autosize&&(k(t,{}),n.autosize=!0,t.layout.autosize=!0),n._glcontainer=n._paperdiv.selectAll(".gl-container").data([0]),n._glcontainer.enter().append("div").classed("gl-container",!0),n._geocontainer=n._paperdiv.selectAll(".geo-container").data([0]),n._geocontainer.enter().append("div").classed("geo-container",!0),n._paperdiv.selectAll(".main-svg").remove(),n._paper=n._paperdiv.insert("svg",":first-child").classed("main-svg",!0),n._toppaper=n._paperdiv.append("svg").classed("main-svg",!0),!n._uid){var 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d=0;c.forEach(function(t,e){t.color||(t.color=f.defaultColorRange[d],d=(d+1)%f.defaultColorRange.length),t.strokeColor||(t.strokeColor="LinePlot"===t.geometry?t.color:a.rgb(t.color).darker().toString()),u.data[e].color=t.color,u.data[e].strokeColor=t.strokeColor,u.data[e].strokeDash=t.strokeDash,u.data[e].strokeSize=t.strokeSize});var h=c.filter(function(t,e){var n=t.visible;return"undefined"==typeof n||n===!0}),p=!1,g=h.map(function(t,e){return p=p||"undefined"!=typeof t.groupId,t});if(p){var v=a.nest().key(function(t,e){return"undefined"!=typeof t.groupId?t.groupId:"unstacked"}).entries(g),m=[],y=v.map(function(t,e){if("unstacked"===t.key)return t.values;var n=t.values[0].r.map(function(t,e){return 0});return t.values.forEach(function(t,e,r){t.yStack=[n],m.push(n),n=o.util.sumArrays(t.r,n)}),t.values});h=a.merge(y)}h.forEach(function(t,e){t.t=Array.isArray(t.t[0])?t.t:[t.t],t.r=Array.isArray(t.r[0])?t.r:[t.r]});var x=Math.min(f.width-f.margin.left-f.margin.right,f.height-f.margin.top-f.margin.bottom)/2;x=Math.max(10,x);var b,_=[f.margin.left+x,f.margin.top+x];if(p){var w=a.max(o.util.sumArrays(o.util.arrayLast(h).r[0],o.util.arrayLast(m)));b=[0,w]}else b=a.extent(o.util.flattenArray(h.map(function(t,e){return t.r})));f.radialAxis.domain!=o.DATAEXTENT&&(b[0]=0),r=a.scale.linear().domain(f.radialAxis.domain!=o.DATAEXTENT&&f.radialAxis.domain?f.radialAxis.domain:b).range([0,x]),u.layout.radialAxis.domain=r.domain();var k,M=o.util.flattenArray(h.map(function(t,e){return t.t})),A="string"==typeof M[0];A&&(M=o.util.deduplicate(M),k=M.slice(),M=a.range(M.length),h=h.map(function(t,e){var n=t;return t.t=[M],p&&(n.yStack=t.yStack),n}));var T=h.filter(function(t,e){return"LinePlot"===t.geometry||"DotPlot"===t.geometry}).length===h.length,L=null===f.needsEndSpacing?A||!T:f.needsEndSpacing,z=f.angularAxis.domain&&f.angularAxis.domain!=o.DATAEXTENT&&!A&&f.angularAxis.domain[0]>=0,S=z?f.angularAxis.domain:a.extent(M),C=Math.abs(M[1]-M[0]);T&&!A&&(C=0);var E=S.slice();L&&A&&(E[1]+=C);var O=f.angularAxis.ticksCount||4;O>8&&(O=O/(O/8)+O%8),f.angularAxis.ticksStep&&(O=(E[1]-E[0])/O);var N=f.angularAxis.ticksStep||(E[1]-E[0])/(O*(f.minorTicks+1));k&&(N=Math.max(Math.round(N),1)),E[2]||(E[2]=N);var P=a.range.apply(this,E);if(P=P.map(function(t,e){return parseFloat(t.toPrecision(12))}),l=a.scale.linear().domain(E.slice(0,2)).range("clockwise"===f.direction?[0,360]:[360,0]),u.layout.angularAxis.domain=l.domain(),u.layout.angularAxis.endPadding=L?C:0,e=a.select(this).select("svg.chart-root"),"undefined"==typeof e||e.empty()){var D="<svg xmlns='http://www.w3.org/2000/svg' class='chart-root'>' + '<g class='outer-group'>' + '<g 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j=e.select(".legend-group").style({display:"none"});e.attr({width:f.width,height:f.height}).style({opacity:f.opacity}),F.attr("transform","translate("+_+")").style({cursor:"crosshair"});var Z=[(f.width-(f.margin.left+f.margin.right+2*x+(V?V.width:0)))/2,(f.height-(f.margin.top+f.margin.bottom+2*x))/2];if(Z[0]=Math.max(0,Z[0]),Z[1]=Math.max(0,Z[1]),e.select(".outer-group").attr("transform","translate("+Z+")"),f.title){var Y=e.select("g.title-group text").style(B).text(f.title),U=Y.node().getBBox();Y.attr({x:_[0]-U.width/2,y:_[1]-x-20})}var X=e.select(".radial.axis-group");if(f.radialAxis.gridLinesVisible){var G=X.selectAll("circle.grid-circle").data(r.ticks(5));G.enter().append("circle").attr({class:"grid-circle"}).style(q),G.attr("r",r),G.exit().remove()}X.select("circle.outside-circle").attr({r:x}).style(q);var $=e.select("circle.background-circle").attr({r:x}).style({fill:f.backgroundColor,stroke:f.stroke});if(f.radialAxis.visible){var Q=a.svg.axis().scale(r).ticks(5).tickSize(5);X.call(Q).attr({transform:"rotate("+f.radialAxis.orientation+")"}),X.selectAll(".domain").style(q),X.selectAll("g>text").text(function(t,e){return this.textContent+f.radialAxis.ticksSuffix}).style(B).style({"text-anchor":"start"}).attr({x:0,y:0,dx:0,dy:0,transform:function(t,e){return"horizontal"===f.radialAxis.tickOrientation?"rotate("+-f.radialAxis.orientation+") translate("+[0,B["font-size"]]+")":"translate("+[0,B["font-size"]]+")"}}),X.selectAll("g>line").style({stroke:"black"})}var W=e.select(".angular.axis-group").selectAll("g.angular-tick").data(P),J=W.enter().append("g").classed("angular-tick",!0);W.attr({transform:function(t,e){return"rotate("+s(t,e)+")"}}).style({display:f.angularAxis.visible?"block":"none"}),W.exit().remove(),J.append("line").classed("grid-line",!0).classed("major",function(t,e){return e%(f.minorTicks+1)==0}).classed("minor",function(t,e){return!(e%(f.minorTicks+1)==0)}).style(q),J.selectAll(".minor").style({stroke:f.minorTickColor}),W.select("line.grid-line").attr({x1:f.tickLength?x-f.tickLength:0,x2:x}).style({display:f.angularAxis.gridLinesVisible?"block":"none"}),J.append("text").classed("axis-text",!0).style(B);var K=W.select("text.axis-text").attr({x:x+f.labelOffset,dy:".35em",transform:function(t,e){var n=s(t,e),r=x+f.labelOffset,a=f.angularAxis.tickOrientation;return"horizontal"==a?"rotate("+-n+" "+r+" 0)":"radial"==a?n<270&&n>90?"rotate(180 "+r+" 0)":null:"rotate("+(n<=180&&n>0?-90:90)+" "+r+" 0)"}}).style({"text-anchor":"middle",display:f.angularAxis.labelsVisible?"block":"none"}).text(function(t,e){return e%(f.minorTicks+1)!=0?"":k?k[t]+f.angularAxis.ticksSuffix:t+f.angularAxis.ticksSuffix}).style(B);f.angularAxis.rewriteTicks&&K.text(function(t,e){return e%(f.minorTicks+1)!=0?"":f.angularAxis.rewriteTicks(this.textContent,e)});var tt=a.max(F.selectAll(".angular-tick text")[0].map(function(t,e){return t.getCTM().e+t.getBBox().width}));j.attr({transform:"translate("+[x+tt,f.margin.top]+")"});var et=e.select("g.geometry-group").selectAll("g").size()>0,nt=e.select("g.geometry-group").selectAll("g.geometry").data(h);if(nt.enter().append("g").attr({class:function(t,e){return"geometry geometry"+e}}),nt.exit().remove(),h[0]||et){var rt=[];h.forEach(function(t,e){var n={};n.radialScale=r,n.angularScale=l,n.container=nt.filter(function(t,n){return n==e}),n.geometry=t.geometry,n.orientation=f.orientation,n.direction=f.direction,n.index=e,rt.push({data:t,geometryConfig:n})});var at=a.nest().key(function(t,e){return"undefined"!=typeof t.data.groupId||"unstacked"}).entries(rt),ot=[];at.forEach(function(t,e){"unstacked"===t.key?ot=ot.concat(t.values.map(function(t,e){return[t]})):ot.push(t.values)}),ot.forEach(function(t,e){var n;n=Array.isArray(t)?t[0].geometryConfig.geometry:t.geometryConfig.geometry;var r=t.map(function(t,e){return i(o[n].defaultConfig(),t)});o[n]().config(r)()})}var it,lt,st=e.select(".guides-group"),ct=e.select(".tooltips-group"),ut=o.tooltipPanel().config({container:ct,fontSize:8})(),ft=o.tooltipPanel().config({container:ct,fontSize:8})(),dt=o.tooltipPanel().config({container:ct,hasTick:!0})();if(!A){var ht=st.select("line").attr({x1:0,y1:0,y2:0}).style({stroke:"grey","pointer-events":"none"});F.on("mousemove.angular-guide",function(t,e){var n=o.util.getMousePos($).angle;ht.attr({x2:-x,transform:"rotate("+n+")"}).style({opacity:.5});var r=(n+180+360-f.orientation)%360;it=l.invert(r);var a=o.util.convertToCartesian(x+12,n+180);ut.text(o.util.round(it)).move([a[0]+_[0],a[1]+_[1]])}).on("mouseout.angular-guide",function(t,e){st.select("line").style({opacity:0})})}var pt=st.select("circle").style({stroke:"grey",fill:"none"});F.on("mousemove.radial-guide",function(t,e){var n=o.util.getMousePos($).radius;pt.attr({r:n}).style({opacity:.5}),lt=r.invert(o.util.getMousePos($).radius);var a=o.util.convertToCartesian(n,f.radialAxis.orientation);ft.text(o.util.round(lt)).move([a[0]+_[0],a[1]+_[1]])}).on("mouseout.radial-guide",function(t,e){pt.style({opacity:0}),dt.hide(),ut.hide(),ft.hide()}),e.selectAll(".geometry-group .mark").on("mouseover.tooltip",function(t,n){var r=a.select(this),i=r.style("fill"),l="black",s=r.style("opacity")||1;if(r.attr({"data-opacity":s}),"none"!=i){r.attr({"data-fill":i}),l=a.hsl(i).darker().toString(),r.style({fill:l,opacity:1});var c={t:o.util.round(t[0]),r:o.util.round(t[1])};A&&(c.t=k[t[0]]);var u="t: "+c.t+", r: "+c.r,f=this.getBoundingClientRect(),d=e.node().getBoundingClientRect(),h=[f.left+f.width/2-Z[0]-d.left,f.top+f.height/2-Z[1]-d.top];dt.config({color:l}).text(u),dt.move(h)}else 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n},o.util={},o.DATAEXTENT="dataExtent",o.AREA="AreaChart",o.LINE="LinePlot",o.DOT="DotPlot",o.BAR="BarChart",o.util._override=function(t,e){for(var n in t)n in e&&(e[n]=t[n])},o.util._extend=function(t,e){for(var n in t)e[n]=t[n]},o.util._rndSnd=function(){return 2*Math.random()-1+(2*Math.random()-1)+(2*Math.random()-1)},o.util.dataFromEquation2=function(t,e){var n=e||6,r=a.range(0,360+n,n).map(function(e,n){var r=e*Math.PI/180,a=t(r);return[e,a]});return r},o.util.dataFromEquation=function(t,e,n){var r=e||6,o=[],i=[];a.range(0,360+r,r).forEach(function(e,n){var r=e*Math.PI/180,a=t(r);o.push(e),i.push(a)});var l={t:o,r:i};return n&&(l.name=n),l},o.util.ensureArray=function(t,e){if("undefined"==typeof t)return null;var n=[].concat(t);return a.range(e).map(function(t,e){return n[e]||n[0]})},o.util.fillArrays=function(t,e,n){return e.forEach(function(e,r){t[e]=o.util.ensureArray(t[e],n)}),t},o.util.cloneJson=function(t){return 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o.x=n,o.y=r,o.pos=e,o.angle=180*(Math.atan2(r,n)+Math.PI)/Math.PI,o.radius=Math.sqrt(n*n+r*r),o},o.util.duplicatesCount=function(t){for(var e,n={},r={},a=0,o=t.length;a<o;a++)e=t[a],e in n?(n[e]++,r[e]=n[e]):n[e]=1;return r},o.util.duplicates=function(t){return Object.keys(o.util.duplicatesCount(t))},o.util.translator=function(t,e,n,r){if(r){var a=n.slice();n=e,e=a}var o=e.reduce(function(t,e){if("undefined"!=typeof t)return t[e]},t);"undefined"!=typeof o&&(e.reduce(function(t,n,r){if("undefined"!=typeof t)return r===e.length-1&&delete t[n],t[n]},t),n.reduce(function(t,e,r){return"undefined"==typeof t[e]&&(t[e]={}),r===n.length-1&&(t[e]=o),t[e]},t))},o.PolyChart=function(){function t(){var t=n[0].geometryConfig,e=t.container;"string"==typeof e&&(e=a.select(e)),e.datum(n).each(function(e,n){function r(e,n){var r=t.radialScale(e[1]),a=(t.angularScale(e[0])+t.orientation)*Math.PI/180;return{r:r,t:a}}function o(t){var e=t.r*Math.cos(t.t),n=t.r*Math.sin(t.t);return{x:e,y:n}}var i=!!e[0].data.yStack,s=e.map(function(t,e){return i?a.zip(t.data.t[0],t.data.r[0],t.data.yStack[0]):a.zip(t.data.t[0],t.data.r[0])}),c=t.angularScale,u=t.radialScale.domain()[0],f={};f.bar=function(n,r,o){var i=e[o].data,l=t.radialScale(n[1])-t.radialScale(0),s=t.radialScale(n[2]||0),u=i.barWidth;a.select(this).attr({class:"mark bar",d:"M"+[[l+s,-u/2],[l+s,u/2],[s,u/2],[s,-u/2]].join("L")+"Z",transform:function(e,n){return"rotate("+(t.orientation+c(e[0]))+")"}})},f.dot=function(t,n,i){var l=t[2]?[t[0],t[1]+t[2]]:t,s=a.svg.symbol().size(e[i].data.dotSize).type(e[i].data.dotType)(t,n);a.select(this).attr({class:"mark dot",d:s,transform:function(t,e){var n=o(r(l));return"translate("+[n.x,n.y]+")"}})};var d=a.svg.line.radial().interpolate(e[0].data.lineInterpolation).radius(function(e){return t.radialScale(e[1])}).angle(function(e){return t.angularScale(e[0])*Math.PI/180});f.line=function(n,r,o){var 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a=k+i.pxmid[0]*e.rCenter+(e.x||0),l=M+i.pxmid[1]*e.rCenter+(e.y||0);e.outside&&(i.yLabelMin=l-n.height/2,i.yLabelMid=l,i.yLabelMax=l+n.height/2,i.labelExtraX=0,i.labelExtraY=0,m=!0),t.attr("transform","translate("+a+","+l+")"+(e.scale<1?"scale("+e.scale+")":"")+(e.rotate?"rotate("+e.rotate+")":"")+"translate("+-(n.left+n.right)/2+","+-(n.top+n.bottom)/2+")")})}),m&&i(s,v),l.each(function(t){if(t.labelExtraX||t.labelExtraY){var e=u.select(this),n=e.select("g.slicetext text");n.attr("transform","translate("+t.labelExtraX+","+t.labelExtraY+")"+n.attr("transform"));var r=t.cxFinal+t.pxmid[0],a=t.cyFinal+t.pxmid[1],o="M"+r+","+a,i=(t.yLabelMax-t.yLabelMin)*(t.pxmid[0]<0?-1:1)/4;if(t.labelExtraX){var l=t.labelExtraX*t.pxmid[1]/t.pxmid[0],s=t.yLabelMid+t.labelExtraY-(t.cyFinal+t.pxmid[1]);o+=Math.abs(l)>Math.abs(s)?"l"+s*t.pxmid[0]/t.pxmid[1]+","+s+"H"+(r+t.labelExtraX+i):"l"+t.labelExtraX+","+l+"v"+(s-l)+"h"+i}else 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o=n.marker.line.width||0;Array.isArray(o)&&(o=o[e.i]||0),t.style({"stroke-width":o,fill:e.color}).call(r.stroke,a)}},{"../../components/color":18}],171:[function(t,e,n){"use strict";var r=t("../../lib");e.exports=function(t){var e=t[0].trace,n=e.marker;if(r.mergeArray(e.text,t,"tx"),r.mergeArray(e.textposition,t,"tp"),e.textfont&&(r.mergeArray(e.textfont.size,t,"ts"),r.mergeArray(e.textfont.color,t,"tc"),r.mergeArray(e.textfont.family,t,"tf")),
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r=t("../../components/colorscale/color_attributes"),a=t("../../components/drawing"),o=(t("./constants"),t("../../lib/extend").extendFlat);e.exports={x:{valType:"data_array"},x0:{valType:"any",dflt:0},dx:{valType:"number",dflt:1},y:{valType:"data_array"},y0:{valType:"any",dflt:0},dy:{valType:"number",dflt:1},text:{valType:"string",dflt:"",arrayOk:!0},mode:{valType:"flaglist",flags:["lines","markers","text"],extras:["none"]},hoveron:{valType:"flaglist",flags:["points","fills"]},line:{color:{valType:"color"},width:{valType:"number",min:0,dflt:2},shape:{valType:"enumerated",values:["linear","spline","hv","vh","hvh","vhv"],dflt:"linear"},smoothing:{valType:"number",min:0,max:1.3,dflt:1},dash:{valType:"string",values:["solid","dot","dash","longdash","dashdot","longdashdot"],dflt:"solid"}},connectgaps:{valType:"boolean",dflt:!1},fill:{valType:"enumerated",values:["none","tozeroy","tozerox","tonexty","tonextx","toself","tonext"],dflt:"none"},fillcolor:{valType:"color"},marker:o({},{symbol:{valType:"enumerated",values:a.symbolList,dflt:"circle",arrayOk:!0},opacity:{valType:"number",min:0,max:1,arrayOk:!0},size:{valType:"number",min:0,dflt:6,arrayOk:!0},maxdisplayed:{valType:"number",min:0,dflt:0},sizeref:{valType:"number",dflt:1},sizemin:{valType:"number",min:0,dflt:0},sizemode:{valType:"enumerated",values:["diameter","area"],dflt:"diameter"},showscale:{valType:"boolean",dflt:!1},line:o({},{width:{valType:"number",min:0,arrayOk:!0}},r("marker.line"))},r("marker")),textposition:{valType:"enumerated",values:["top 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g={padded:!0},v={padded:!0};if(i.hasMarkers(e)){if(n=e.marker,s=n.size,Array.isArray(s)){var m={type:"linear"};a.setConvert(m),s=m.makeCalcdata(e.marker,"size"),s.length>p&&s.splice(p,s.length-p)}var y,x=1.6*(e.marker.sizeref||1);y="area"===e.marker.sizemode?function(t){return Math.max(Math.sqrt((t||0)/x),3)}:function(t){return Math.max((t||0)/x,3)},g.ppad=v.ppad=Array.isArray(s)?s.map(y):y(s)}l(e),!("tozerox"===e.fill||"tonextx"===e.fill&&t.firstscatter)||d[0]===d[p-1]&&h[0]===h[p-1]?e.error_y.visible||["tonexty","tozeroy"].indexOf(e.fill)===-1&&(i.hasMarkers(e)||i.hasText(e))||(g.padded=!1,g.ppad=0):g.tozero=!0,!("tozeroy"===e.fill||"tonexty"===e.fill&&t.firstscatter)||d[0]===d[p-1]&&h[0]===h[p-1]?["tonextx","tozerox"].indexOf(e.fill)!==-1&&(v.padded=!1):v.tozero=!0,a.expand(u,d,g),a.expand(f,h,v);var b=new Array(p);for(c=0;c<p;c++)b[c]=r(d[c])&&r(h[c])?{x:d[c],y:h[c]}:{x:!1,y:!1};return void 0!==typeof 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r=e.x(),o=e.y(),i=a.extent(r.range.map(r.l2c)),l=a.extent(o.range.map(o.l2c));n.forEach(function(t,e){var r=t[0].trace;if(c.hasMarkers(r)){var a=r.marker.maxdisplayed;if(0!==a){var o=t.filter(function(t){return t.x>=i[0]&&t.x<=i[1]&&t.y>=l[0]&&t.y<=l[1]}),s=Math.ceil(o.length/a),u=0;n.forEach(function(t,n){var r=t[0].trace;c.hasMarkers(r)&&r.marker.maxdisplayed>0&&n<e&&u++});var f=Math.round(u*s/3+Math.floor(u/3)*s/7.1);t.forEach(function(t){delete t.vis}),o.forEach(function(t,e){0===Math.round((e+f)%s)&&(t.vis=!0)})}}})}var a=t("d3"),o=t("../../lib"),i=t("../../components/drawing"),l=t("../../components/errorbars"),s=t("../../lib/polygon").tester,c=t("./subtypes"),u=t("./arrays_to_calcdata"),f=t("./line_points");e.exports=function(t,e,n){function d(t){return t.filter(function(t){return t.vis})}r(t,e,n);var h=e.x(),p=e.y(),g=e.plot.select(".scatterlayer").selectAll("g.trace.scatter").data(n);g.enter().append("g").attr("class","trace 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Array(T.length);for(A=0;A<T.length;A++)e._polygons[A]=s(T[A]);if(T.length){var z=T[0][0],S=T[T.length-1],C=S[S.length-1];for(A=0;A<T.length;A++){var E=T[A];o=d(E),l=w(E),k?m?(k+="L"+o.substr(1),M=l+("L"+M.substr(1))):(k+="Z"+o,M=l+"Z"+M):(k=o,M=l),c.hasLines(e)&&E.length>1&&r.append("path").classed("js-line",!0).style("vector-effect","non-scaling-stroke").attr("d",o)}v?z&&C&&(m?("y"===m?z[1]=C[1]=p.c2p(0,!0):"x"===m&&(z[0]=C[0]=h.c2p(0,!0)),v.attr("d",k+"L"+C+"L"+z+"Z")):v.attr("d",k+"Z")):"tonext"===e.fill.substr(0,6)&&k&&b&&("tonext"===e.fill?y.attr("d",k+"Z"+b+"Z"):y.attr("d",k+"L"+b.substr(1)+"Z"),e._polygons=e._polygons.concat(_)),b=M,_=L}}}),g.selectAll("path:not([d])").remove(),g.append("g").attr("class","points").each(function(t){var e=t[0].trace,n=a.select(this),r=c.hasMarkers(e),l=c.hasText(e);!r&&!l||e.visible!==!0?n.remove():(r&&n.selectAll("path.point").data(e.marker.maxdisplayed?d:o.identity).enter().append("path").classed("point",!0).call(i.translatePoints,h,p),l&&n.selectAll("g").data(e.marker.maxdisplayed?d:o.identity).enter().append("g").append("text").call(i.translatePoints,h,p))})}},{"../../components/drawing":41,"../../components/errorbars":47,"../../lib":94,"../../lib/polygon":100,"./arrays_to_calcdata":171,"./line_points":184,"./subtypes":191,d3:7}],189:[function(t,e,n){"use strict";var r=t("./subtypes"),a=.2;e.exports=function(t,e){var n,o,i,l,s=t.cd,c=t.xaxis,u=t.yaxis,f=[],d=s[0].trace,h=d.index,p=d.marker,g=!r.hasMarkers(d)&&!r.hasText(d);if(d.visible===!0&&!g){var v=Array.isArray(p.opacity)?1:p.opacity;if(e===!1)for(n=0;n<s.length;n++)s[n].dim=0;else for(n=0;n<s.length;n++)o=s[n],i=c.c2p(o.x),l=u.c2p(o.y),e.contains([i,l])?(f.push({curveNumber:h,pointNumber:n,x:o.x,y:o.y}),o.dim=0):o.dim=1;return s[0].node3.selectAll("path.point").style("opacity",function(t){return((t.mo+1||v+1)-1)*(t.dim?a:1)}),s[0].node3.selectAll("text").style("opacity",function(t){return t.dim?a:1}),f}}},{"./subtypes":191}],190:[function(t,e,n){"use strict";var r=t("d3"),a=t("../../components/drawing"),o=t("../../components/errorbars");e.exports=function(t){var e=r.select(t).selectAll("g.trace.scatter");e.style("opacity",function(t){return t[0].trace.opacity}),e.selectAll("g.points").each(function(t){r.select(this).selectAll("path.point").call(a.pointStyle,t.trace||t[0].trace),r.select(this).selectAll("text").call(a.textPointStyle,t.trace||t[0].trace)}),e.selectAll("g.trace path.js-line").call(a.lineGroupStyle),e.selectAll("g.trace path.js-fill").call(a.fillGroupStyle),e.call(o.style)}},{"../../components/drawing":41,"../../components/errorbars":47,d3:7}],191:[function(t,e,n){"use strict";var r=t("../../lib");e.exports={hasLines:function(t){return t.visible&&t.mode&&t.mode.indexOf("lines")!==-1},hasMarkers:function(t){return t.visible&&t.mode&&t.mode.indexOf("markers")!==-1},hasText:function(t){return t.visible&&t.mode&&t.mode.indexOf("text")!==-1},isBubble:function(t){return r.isPlainObject(t.marker)&&Array.isArray(t.marker.size)}}},{"../../lib":94}],192:[function(t,e,n){"use strict";var r=t("../../lib");e.exports=function(t,e,n,a){a("textposition"),r.coerceFont(a,"textfont",n.font)}},{"../../lib":94}],193:[function(t,e,n){"use strict";e.exports=function(t,e,n){var r,a=n("x"),o=n("y");if(a)o?(r=Math.min(a.length,o.length),r<a.length&&(e.x=a.slice(0,r)),r<o.length&&(e.y=o.slice(0,r))):(r=a.length,n("y0"),n("dy"));else{if(!o)return 0;r=e.y.length,n("x0"),n("dx")}return r}},{}]},{},[5])(5)});
+\ No newline at end of file
+diff --git a/dist/plotly-cartesian.js b/dist/plotly-cartesian.js
+index bbc98f5..0ceaa4b 100644
+--- a/dist/plotly-cartesian.js
++++ b/dist/plotly-cartesian.js
+@@ -326,402 +326,9 @@ module.exports = require('../src/traces/pie');
+ module.exports = require('../src/traces/scatterternary');
+ 
+ },{"../src/traces/scatterternary":262}],14:[function(require,module,exports){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+-
+-function EventEmitter() {
+-  this._events = this._events || {};
+-  this._maxListeners = this._maxListeners || undefined;
+-}
+-module.exports = EventEmitter;
+-
+-// Backwards-compat with node 0.10.x
+-EventEmitter.EventEmitter = EventEmitter;
+-
+-EventEmitter.prototype._events = undefined;
+-EventEmitter.prototype._maxListeners = undefined;
+-
+-// By default EventEmitters will print a warning if more than 10 listeners are
+-// added to it. This is a useful default which helps finding memory leaks.
+-EventEmitter.defaultMaxListeners = 10;
+-
+-// Obviously not all Emitters should be limited to 10. This function allows
+-// that to be increased. Set to zero for unlimited.
+-EventEmitter.prototype.setMaxListeners = function(n) {
+-  if (!isNumber(n) || n < 0 || isNaN(n))
+-    throw TypeError('n must be a positive number');
+-  this._maxListeners = n;
+-  return this;
+-};
+-
+-EventEmitter.prototype.emit = function(type) {
+-  var er, handler, len, args, i, listeners;
+-
+-  if (!this._events)
+-    this._events = {};
+-
+-  // If there is no 'error' event listener then throw.
+-  if (type === 'error') {
+-    if (!this._events.error ||
+-        (isObject(this._events.error) && !this._events.error.length)) {
+-      er = arguments[1];
+-      if (er instanceof Error) {
+-        throw er; // Unhandled 'error' event
+-      }
+-      throw TypeError('Uncaught, unspecified "error" event.');
+-    }
+-  }
+-
+-  handler = this._events[type];
+-
+-  if (isUndefined(handler))
+-    return false;
+-
+-  if (isFunction(handler)) {
+-    switch (arguments.length) {
+-      // fast cases
+-      case 1:
+-        handler.call(this);
+-        break;
+-      case 2:
+-        handler.call(this, arguments[1]);
+-        break;
+-      case 3:
+-        handler.call(this, arguments[1], arguments[2]);
+-        break;
+-      // slower
+-      default:
+-        args = Array.prototype.slice.call(arguments, 1);
+-        handler.apply(this, args);
+-    }
+-  } else if (isObject(handler)) {
+-    args = Array.prototype.slice.call(arguments, 1);
+-    listeners = handler.slice();
+-    len = listeners.length;
+-    for (i = 0; i < len; i++)
+-      listeners[i].apply(this, args);
+-  }
+-
+-  return true;
+-};
+-
+-EventEmitter.prototype.addListener = function(type, listener) {
+-  var m;
+-
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  if (!this._events)
+-    this._events = {};
+-
+-  // To avoid recursion in the case that type === "newListener"! Before
+-  // adding it to the listeners, first emit "newListener".
+-  if (this._events.newListener)
+-    this.emit('newListener', type,
+-              isFunction(listener.listener) ?
+-              listener.listener : listener);
+-
+-  if (!this._events[type])
+-    // Optimize the case of one listener. Don't need the extra array object.
+-    this._events[type] = listener;
+-  else if (isObject(this._events[type]))
+-    // If we've already got an array, just append.
+-    this._events[type].push(listener);
+-  else
+-    // Adding the second element, need to change to array.
+-    this._events[type] = [this._events[type], listener];
+-
+-  // Check for listener leak
+-  if (isObject(this._events[type]) && !this._events[type].warned) {
+-    if (!isUndefined(this._maxListeners)) {
+-      m = this._maxListeners;
+-    } else {
+-      m = EventEmitter.defaultMaxListeners;
+-    }
+-
+-    if (m && m > 0 && this._events[type].length > m) {
+-      this._events[type].warned = true;
+-      console.error('(node) warning: possible EventEmitter memory ' +
+-                    'leak detected. %d listeners added. ' +
+-                    'Use emitter.setMaxListeners() to increase limit.',
+-                    this._events[type].length);
+-      if (typeof console.trace === 'function') {
+-        // not supported in IE 10
+-        console.trace();
+-      }
+-    }
+-  }
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+-
+-EventEmitter.prototype.once = function(type, listener) {
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  var fired = false;
+-
+-  function g() {
+-    this.removeListener(type, g);
+-
+-    if (!fired) {
+-      fired = true;
+-      listener.apply(this, arguments);
+-    }
+-  }
+-
+-  g.listener = listener;
+-  this.on(type, g);
+-
+-  return this;
+-};
+-
+-// emits a 'removeListener' event iff the listener was removed
+-EventEmitter.prototype.removeListener = function(type, listener) {
+-  var list, position, length, i;
+-
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  if (!this._events || !this._events[type])
+-    return this;
+-
+-  list = this._events[type];
+-  length = list.length;
+-  position = -1;
+-
+-  if (list === listener ||
+-      (isFunction(list.listener) && list.listener === listener)) {
+-    delete this._events[type];
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+-
+-  } else if (isObject(list)) {
+-    for (i = length; i-- > 0;) {
+-      if (list[i] === listener ||
+-          (list[i].listener && list[i].listener === listener)) {
+-        position = i;
+-        break;
+-      }
+-    }
+-
+-    if (position < 0)
+-      return this;
+-
+-    if (list.length === 1) {
+-      list.length = 0;
+-      delete this._events[type];
+-    } else {
+-      list.splice(position, 1);
+-    }
+-
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+-  }
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.removeAllListeners = function(type) {
+-  var key, listeners;
+-
+-  if (!this._events)
+-    return this;
+-
+-  // not listening for removeListener, no need to emit
+-  if (!this._events.removeListener) {
+-    if (arguments.length === 0)
+-      this._events = {};
+-    else if (this._events[type])
+-      delete this._events[type];
+-    return this;
+-  }
+-
+-  // emit removeListener for all listeners on all events
+-  if (arguments.length === 0) {
+-    for (key in this._events) {
+-      if (key === 'removeListener') continue;
+-      this.removeAllListeners(key);
+-    }
+-    this.removeAllListeners('removeListener');
+-    this._events = {};
+-    return this;
+-  }
+-
+-  listeners = this._events[type];
+-
+-  if (isFunction(listeners)) {
+-    this.removeListener(type, listeners);
+-  } else if (listeners) {
+-    // LIFO order
+-    while (listeners.length)
+-      this.removeListener(type, listeners[listeners.length - 1]);
+-  }
+-  delete this._events[type];
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.listeners = function(type) {
+-  var ret;
+-  if (!this._events || !this._events[type])
+-    ret = [];
+-  else if (isFunction(this._events[type]))
+-    ret = [this._events[type]];
+-  else
+-    ret = this._events[type].slice();
+-  return ret;
+-};
+-
+-EventEmitter.prototype.listenerCount = function(type) {
+-  if (this._events) {
+-    var evlistener = this._events[type];
+-
+-    if (isFunction(evlistener))
+-      return 1;
+-    else if (evlistener)
+-      return evlistener.length;
+-  }
+-  return 0;
+-};
+-
+-EventEmitter.listenerCount = function(emitter, type) {
+-  return emitter.listenerCount(type);
+-};
+-
+-function isFunction(arg) {
+-  return typeof arg === 'function';
+-}
+-
+-function isNumber(arg) {
+-  return typeof arg === 'number';
+-}
+-
+-function isObject(arg) {
+-  return typeof arg === 'object' && arg !== null;
+-}
+-
+-function isUndefined(arg) {
+-  return arg === void 0;
+-}
+-
+-},{}],15:[function(require,module,exports){
+-// shim for using process in browser
+-
+-var process = module.exports = {};
+-var queue = [];
+-var draining = false;
+-var currentQueue;
+-var queueIndex = -1;
+-
+-function cleanUpNextTick() {
+-    draining = false;
+-    if (currentQueue.length) {
+-        queue = currentQueue.concat(queue);
+-    } else {
+-        queueIndex = -1;
+-    }
+-    if (queue.length) {
+-        drainQueue();
+-    }
+-}
+-
+-function drainQueue() {
+-    if (draining) {
+-        return;
+-    }
+-    var timeout = setTimeout(cleanUpNextTick);
+-    draining = true;
+-
+-    var len = queue.length;
+-    while(len) {
+-        currentQueue = queue;
+-        queue = [];
+-        while (++queueIndex < len) {
+-            if (currentQueue) {
+-                currentQueue[queueIndex].run();
+-            }
+-        }
+-        queueIndex = -1;
+-        len = queue.length;
+-    }
+-    currentQueue = null;
+-    draining = false;
+-    clearTimeout(timeout);
+-}
+-
+-process.nextTick = function (fun) {
+-    var args = new Array(arguments.length - 1);
+-    if (arguments.length > 1) {
+-        for (var i = 1; i < arguments.length; i++) {
+-            args[i - 1] = arguments[i];
+-        }
+-    }
+-    queue.push(new Item(fun, args));
+-    if (queue.length === 1 && !draining) {
+-        setTimeout(drainQueue, 0);
+-    }
+-};
+-
+-// v8 likes predictible objects
+-function Item(fun, array) {
+-    this.fun = fun;
+-    this.array = array;
+-}
+-Item.prototype.run = function () {
+-    this.fun.apply(null, this.array);
+-};
+-process.title = 'browser';
+-process.browser = true;
+-process.env = {};
+-process.argv = [];
+-process.version = ''; // empty string to avoid regexp issues
+-process.versions = {};
+-
+-function noop() {}
+-
+-process.on = noop;
+-process.addListener = noop;
+-process.once = noop;
+-process.off = noop;
+-process.removeListener = noop;
+-process.removeAllListeners = noop;
+-process.emit = noop;
+-
+-process.binding = function (name) {
+-    throw new Error('process.binding is not supported');
+-};
+-
+-process.cwd = function () { return '/' };
+-process.chdir = function (dir) {
+-    throw new Error('process.chdir is not supported');
+-};
+-process.umask = function() { return 0; };
+-
+-},{}],16:[function(require,module,exports){
+ !function() {
+   var d3 = {
+-    version: "3.5.16"
++    version: "3.5.17"
+   };
+   var d3_arraySlice = [].slice, d3_array = function(list) {
+     return d3_arraySlice.call(list);
+@@ -4246,7 +3853,7 @@ process.umask = function() { return 0; };
+         λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
+       }
+     }
+-    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
++    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
+   }
+   function d3_geo_clipCircle(radius) {
+     var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
+@@ -10273,965 +9880,1468 @@ process.umask = function() { return 0; };
+   });
+   if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
+ }();
+-},{}],17:[function(require,module,exports){
++},{}],15:[function(require,module,exports){
+ (function (process,global){
+ /*!
+  * @overview es6-promise - a tiny implementation of Promises/A+.
+  * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
+  * @license   Licensed under MIT license
+- *            See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
+- * @version   3.1.2
++ *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
++ * @version   3.3.1
+  */
+ 
+-(function() {
+-    "use strict";
+-    function lib$es6$promise$utils$$objectOrFunction(x) {
+-      return typeof x === 'function' || (typeof x === 'object' && x !== null);
+-    }
++(function (global, factory) {
++    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
++    typeof define === 'function' && define.amd ? define(factory) :
++    (global.ES6Promise = factory());
++}(this, (function () { 'use strict';
+ 
+-    function lib$es6$promise$utils$$isFunction(x) {
+-      return typeof x === 'function';
+-    }
++function objectOrFunction(x) {
++  return typeof x === 'function' || typeof x === 'object' && x !== null;
++}
+ 
+-    function lib$es6$promise$utils$$isMaybeThenable(x) {
+-      return typeof x === 'object' && x !== null;
+-    }
++function isFunction(x) {
++  return typeof x === 'function';
++}
+ 
+-    var lib$es6$promise$utils$$_isArray;
+-    if (!Array.isArray) {
+-      lib$es6$promise$utils$$_isArray = function (x) {
+-        return Object.prototype.toString.call(x) === '[object Array]';
+-      };
++var _isArray = undefined;
++if (!Array.isArray) {
++  _isArray = function (x) {
++    return Object.prototype.toString.call(x) === '[object Array]';
++  };
++} else {
++  _isArray = Array.isArray;
++}
++
++var isArray = _isArray;
++
++var len = 0;
++var vertxNext = undefined;
++var customSchedulerFn = undefined;
++
++var asap = function asap(callback, arg) {
++  queue[len] = callback;
++  queue[len + 1] = arg;
++  len += 2;
++  if (len === 2) {
++    // If len is 2, that means that we need to schedule an async flush.
++    // If additional callbacks are queued before the queue is flushed, they
++    // will be processed by this flush that we are scheduling.
++    if (customSchedulerFn) {
++      customSchedulerFn(flush);
+     } else {
+-      lib$es6$promise$utils$$_isArray = Array.isArray;
+-    }
+-
+-    var lib$es6$promise$utils$$isArray = lib$es6$promise$utils$$_isArray;
+-    var lib$es6$promise$asap$$len = 0;
+-    var lib$es6$promise$asap$$vertxNext;
+-    var lib$es6$promise$asap$$customSchedulerFn;
+-
+-    var lib$es6$promise$asap$$asap = function asap(callback, arg) {
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len] = callback;
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len + 1] = arg;
+-      lib$es6$promise$asap$$len += 2;
+-      if (lib$es6$promise$asap$$len === 2) {
+-        // If len is 2, that means that we need to schedule an async flush.
+-        // If additional callbacks are queued before the queue is flushed, they
+-        // will be processed by this flush that we are scheduling.
+-        if (lib$es6$promise$asap$$customSchedulerFn) {
+-          lib$es6$promise$asap$$customSchedulerFn(lib$es6$promise$asap$$flush);
+-        } else {
+-          lib$es6$promise$asap$$scheduleFlush();
+-        }
+-      }
++      scheduleFlush();
+     }
++  }
++};
+ 
+-    function lib$es6$promise$asap$$setScheduler(scheduleFn) {
+-      lib$es6$promise$asap$$customSchedulerFn = scheduleFn;
+-    }
++function setScheduler(scheduleFn) {
++  customSchedulerFn = scheduleFn;
++}
+ 
+-    function lib$es6$promise$asap$$setAsap(asapFn) {
+-      lib$es6$promise$asap$$asap = asapFn;
+-    }
++function setAsap(asapFn) {
++  asap = asapFn;
++}
+ 
+-    var lib$es6$promise$asap$$browserWindow = (typeof window !== 'undefined') ? window : undefined;
+-    var lib$es6$promise$asap$$browserGlobal = lib$es6$promise$asap$$browserWindow || {};
+-    var lib$es6$promise$asap$$BrowserMutationObserver = lib$es6$promise$asap$$browserGlobal.MutationObserver || lib$es6$promise$asap$$browserGlobal.WebKitMutationObserver;
+-    var lib$es6$promise$asap$$isNode = typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';
++var browserWindow = typeof window !== 'undefined' ? window : undefined;
++var browserGlobal = browserWindow || {};
++var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
++var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]';
+ 
+-    // test for web worker but not in IE10
+-    var lib$es6$promise$asap$$isWorker = typeof Uint8ClampedArray !== 'undefined' &&
+-      typeof importScripts !== 'undefined' &&
+-      typeof MessageChannel !== 'undefined';
++// test for web worker but not in IE10
++var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined';
+ 
+-    // node
+-    function lib$es6$promise$asap$$useNextTick() {
+-      // node version 0.10.x displays a deprecation warning when nextTick is used recursively
+-      // see https://github.com/cujojs/when/issues/410 for details
+-      return function() {
+-        process.nextTick(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// node
++function useNextTick() {
++  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
++  // see https://github.com/cujojs/when/issues/410 for details
++  return function () {
++    return process.nextTick(flush);
++  };
++}
+ 
+-    // vertx
+-    function lib$es6$promise$asap$$useVertxTimer() {
+-      return function() {
+-        lib$es6$promise$asap$$vertxNext(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// vertx
++function useVertxTimer() {
++  return function () {
++    vertxNext(flush);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useMutationObserver() {
+-      var iterations = 0;
+-      var observer = new lib$es6$promise$asap$$BrowserMutationObserver(lib$es6$promise$asap$$flush);
+-      var node = document.createTextNode('');
+-      observer.observe(node, { characterData: true });
++function useMutationObserver() {
++  var iterations = 0;
++  var observer = new BrowserMutationObserver(flush);
++  var node = document.createTextNode('');
++  observer.observe(node, { characterData: true });
+ 
+-      return function() {
+-        node.data = (iterations = ++iterations % 2);
+-      };
+-    }
++  return function () {
++    node.data = iterations = ++iterations % 2;
++  };
++}
+ 
+-    // web worker
+-    function lib$es6$promise$asap$$useMessageChannel() {
+-      var channel = new MessageChannel();
+-      channel.port1.onmessage = lib$es6$promise$asap$$flush;
+-      return function () {
+-        channel.port2.postMessage(0);
+-      };
+-    }
++// web worker
++function useMessageChannel() {
++  var channel = new MessageChannel();
++  channel.port1.onmessage = flush;
++  return function () {
++    return channel.port2.postMessage(0);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useSetTimeout() {
+-      return function() {
+-        setTimeout(lib$es6$promise$asap$$flush, 1);
+-      };
+-    }
++function useSetTimeout() {
++  // Store setTimeout reference so es6-promise will be unaffected by
++  // other code modifying setTimeout (like sinon.useFakeTimers())
++  var globalSetTimeout = setTimeout;
++  return function () {
++    return globalSetTimeout(flush, 1);
++  };
++}
+ 
+-    var lib$es6$promise$asap$$queue = new Array(1000);
+-    function lib$es6$promise$asap$$flush() {
+-      for (var i = 0; i < lib$es6$promise$asap$$len; i+=2) {
+-        var callback = lib$es6$promise$asap$$queue[i];
+-        var arg = lib$es6$promise$asap$$queue[i+1];
++var queue = new Array(1000);
++function flush() {
++  for (var i = 0; i < len; i += 2) {
++    var callback = queue[i];
++    var arg = queue[i + 1];
+ 
+-        callback(arg);
++    callback(arg);
+ 
+-        lib$es6$promise$asap$$queue[i] = undefined;
+-        lib$es6$promise$asap$$queue[i+1] = undefined;
+-      }
++    queue[i] = undefined;
++    queue[i + 1] = undefined;
++  }
+ 
+-      lib$es6$promise$asap$$len = 0;
+-    }
++  len = 0;
++}
+ 
+-    function lib$es6$promise$asap$$attemptVertx() {
+-      try {
+-        var r = require;
+-        var vertx = r('vertx');
+-        lib$es6$promise$asap$$vertxNext = vertx.runOnLoop || vertx.runOnContext;
+-        return lib$es6$promise$asap$$useVertxTimer();
+-      } catch(e) {
+-        return lib$es6$promise$asap$$useSetTimeout();
+-      }
+-    }
++function attemptVertx() {
++  try {
++    var r = require;
++    var vertx = r('vertx');
++    vertxNext = vertx.runOnLoop || vertx.runOnContext;
++    return useVertxTimer();
++  } catch (e) {
++    return useSetTimeout();
++  }
++}
+ 
+-    var lib$es6$promise$asap$$scheduleFlush;
+-    // Decide what async method to use to triggering processing of queued callbacks:
+-    if (lib$es6$promise$asap$$isNode) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useNextTick();
+-    } else if (lib$es6$promise$asap$$BrowserMutationObserver) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMutationObserver();
+-    } else if (lib$es6$promise$asap$$isWorker) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMessageChannel();
+-    } else if (lib$es6$promise$asap$$browserWindow === undefined && typeof require === 'function') {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$attemptVertx();
+-    } else {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useSetTimeout();
+-    }
+-    function lib$es6$promise$then$$then(onFulfillment, onRejection) {
+-      var parent = this;
+-      var state = parent._state;
++var scheduleFlush = undefined;
++// Decide what async method to use to triggering processing of queued callbacks:
++if (isNode) {
++  scheduleFlush = useNextTick();
++} else if (BrowserMutationObserver) {
++  scheduleFlush = useMutationObserver();
++} else if (isWorker) {
++  scheduleFlush = useMessageChannel();
++} else if (browserWindow === undefined && typeof require === 'function') {
++  scheduleFlush = attemptVertx();
++} else {
++  scheduleFlush = useSetTimeout();
++}
+ 
+-      if (state === lib$es6$promise$$internal$$FULFILLED && !onFulfillment || state === lib$es6$promise$$internal$$REJECTED && !onRejection) {
+-        return this;
+-      }
++function then(onFulfillment, onRejection) {
++  var _arguments = arguments;
+ 
+-      var child = new this.constructor(lib$es6$promise$$internal$$noop);
+-      var result = parent._result;
++  var parent = this;
+ 
+-      if (state) {
+-        var callback = arguments[state - 1];
+-        lib$es6$promise$asap$$asap(function(){
+-          lib$es6$promise$$internal$$invokeCallback(state, child, callback, result);
+-        });
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection);
+-      }
++  var child = new this.constructor(noop);
+ 
+-      return child;
+-    }
+-    var lib$es6$promise$then$$default = lib$es6$promise$then$$then;
+-    function lib$es6$promise$promise$resolve$$resolve(object) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++  if (child[PROMISE_ID] === undefined) {
++    makePromise(child);
++  }
+ 
+-      if (object && typeof object === 'object' && object.constructor === Constructor) {
+-        return object;
+-      }
++  var _state = parent._state;
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$resolve(promise, object);
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$resolve$$default = lib$es6$promise$promise$resolve$$resolve;
++  if (_state) {
++    (function () {
++      var callback = _arguments[_state - 1];
++      asap(function () {
++        return invokeCallback(_state, child, callback, parent._result);
++      });
++    })();
++  } else {
++    subscribe(parent, child, onFulfillment, onRejection);
++  }
+ 
+-    function lib$es6$promise$$internal$$noop() {}
++  return child;
++}
+ 
+-    var lib$es6$promise$$internal$$PENDING   = void 0;
+-    var lib$es6$promise$$internal$$FULFILLED = 1;
+-    var lib$es6$promise$$internal$$REJECTED  = 2;
++/**
++  `Promise.resolve` returns a promise that will become resolved with the
++  passed `value`. It is shorthand for the following:
+ 
+-    var lib$es6$promise$$internal$$GET_THEN_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    resolve(1);
++  });
+ 
+-    function lib$es6$promise$$internal$$selfFulfillment() {
+-      return new TypeError("You cannot resolve a promise with itself");
+-    }
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
+ 
+-    function lib$es6$promise$$internal$$cannotReturnOwn() {
+-      return new TypeError('A promises callback cannot return that same promise.');
+-    }
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-    function lib$es6$promise$$internal$$getThen(promise) {
+-      try {
+-        return promise.then;
+-      } catch(error) {
+-        lib$es6$promise$$internal$$GET_THEN_ERROR.error = error;
+-        return lib$es6$promise$$internal$$GET_THEN_ERROR;
+-      }
+-    }
++  ```javascript
++  let promise = Promise.resolve(1);
+ 
+-    function lib$es6$promise$$internal$$tryThen(then, value, fulfillmentHandler, rejectionHandler) {
+-      try {
+-        then.call(value, fulfillmentHandler, rejectionHandler);
+-      } catch(e) {
+-        return e;
+-      }
+-    }
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
+ 
+-    function lib$es6$promise$$internal$$handleForeignThenable(promise, thenable, then) {
+-       lib$es6$promise$asap$$asap(function(promise) {
+-        var sealed = false;
+-        var error = lib$es6$promise$$internal$$tryThen(then, thenable, function(value) {
+-          if (sealed) { return; }
+-          sealed = true;
+-          if (thenable !== value) {
+-            lib$es6$promise$$internal$$resolve(promise, value);
+-          } else {
+-            lib$es6$promise$$internal$$fulfill(promise, value);
+-          }
+-        }, function(reason) {
+-          if (sealed) { return; }
+-          sealed = true;
++  @method resolve
++  @static
++  @param {Any} value value that the returned promise will be resolved with
++  Useful for tooling.
++  @return {Promise} a promise that will become fulfilled with the given
++  `value`
++*/
++function resolve(object) {
++  /*jshint validthis:true */
++  var Constructor = this;
+ 
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        }, 'Settle: ' + (promise._label || ' unknown promise'));
++  if (object && typeof object === 'object' && object.constructor === Constructor) {
++    return object;
++  }
+ 
+-        if (!sealed && error) {
+-          sealed = true;
+-          lib$es6$promise$$internal$$reject(promise, error);
+-        }
+-      }, promise);
+-    }
++  var promise = new Constructor(noop);
++  _resolve(promise, object);
++  return promise;
++}
+ 
+-    function lib$es6$promise$$internal$$handleOwnThenable(promise, thenable) {
+-      if (thenable._state === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, thenable._result);
+-      } else if (thenable._state === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, thenable._result);
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(thenable, undefined, function(value) {
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      }
+-    }
++var PROMISE_ID = Math.random().toString(36).substring(16);
+ 
+-    function lib$es6$promise$$internal$$handleMaybeThenable(promise, maybeThenable, then) {
+-      if (maybeThenable.constructor === promise.constructor &&
+-          then === lib$es6$promise$then$$default &&
+-          constructor.resolve === lib$es6$promise$promise$resolve$$default) {
+-        lib$es6$promise$$internal$$handleOwnThenable(promise, maybeThenable);
+-      } else {
+-        if (then === lib$es6$promise$$internal$$GET_THEN_ERROR) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$GET_THEN_ERROR.error);
+-        } else if (then === undefined) {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        } else if (lib$es6$promise$utils$$isFunction(then)) {
+-          lib$es6$promise$$internal$$handleForeignThenable(promise, maybeThenable, then);
+-        } else {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        }
+-      }
+-    }
++function noop() {}
+ 
+-    function lib$es6$promise$$internal$$resolve(promise, value) {
+-      if (promise === value) {
+-        lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$selfFulfillment());
+-      } else if (lib$es6$promise$utils$$objectOrFunction(value)) {
+-        lib$es6$promise$$internal$$handleMaybeThenable(promise, value, lib$es6$promise$$internal$$getThen(value));
+-      } else {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      }
+-    }
++var PENDING = void 0;
++var FULFILLED = 1;
++var REJECTED = 2;
+ 
+-    function lib$es6$promise$$internal$$publishRejection(promise) {
+-      if (promise._onerror) {
+-        promise._onerror(promise._result);
+-      }
++var GET_THEN_ERROR = new ErrorObject();
+ 
+-      lib$es6$promise$$internal$$publish(promise);
+-    }
++function selfFulfillment() {
++  return new TypeError("You cannot resolve a promise with itself");
++}
+ 
+-    function lib$es6$promise$$internal$$fulfill(promise, value) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
++function cannotReturnOwn() {
++  return new TypeError('A promises callback cannot return that same promise.');
++}
+ 
+-      promise._result = value;
+-      promise._state = lib$es6$promise$$internal$$FULFILLED;
++function getThen(promise) {
++  try {
++    return promise.then;
++  } catch (error) {
++    GET_THEN_ERROR.error = error;
++    return GET_THEN_ERROR;
++  }
++}
++
++function tryThen(then, value, fulfillmentHandler, rejectionHandler) {
++  try {
++    then.call(value, fulfillmentHandler, rejectionHandler);
++  } catch (e) {
++    return e;
++  }
++}
+ 
+-      if (promise._subscribers.length !== 0) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, promise);
++function handleForeignThenable(promise, thenable, then) {
++  asap(function (promise) {
++    var sealed = false;
++    var error = tryThen(then, thenable, function (value) {
++      if (sealed) {
++        return;
++      }
++      sealed = true;
++      if (thenable !== value) {
++        _resolve(promise, value);
++      } else {
++        fulfill(promise, value);
+       }
++    }, function (reason) {
++      if (sealed) {
++        return;
++      }
++      sealed = true;
++
++      _reject(promise, reason);
++    }, 'Settle: ' + (promise._label || ' unknown promise'));
++
++    if (!sealed && error) {
++      sealed = true;
++      _reject(promise, error);
+     }
++  }, promise);
++}
+ 
+-    function lib$es6$promise$$internal$$reject(promise, reason) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
+-      promise._state = lib$es6$promise$$internal$$REJECTED;
+-      promise._result = reason;
++function handleOwnThenable(promise, thenable) {
++  if (thenable._state === FULFILLED) {
++    fulfill(promise, thenable._result);
++  } else if (thenable._state === REJECTED) {
++    _reject(promise, thenable._result);
++  } else {
++    subscribe(thenable, undefined, function (value) {
++      return _resolve(promise, value);
++    }, function (reason) {
++      return _reject(promise, reason);
++    });
++  }
++}
+ 
+-      lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publishRejection, promise);
++function handleMaybeThenable(promise, maybeThenable, then$$) {
++  if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) {
++    handleOwnThenable(promise, maybeThenable);
++  } else {
++    if (then$$ === GET_THEN_ERROR) {
++      _reject(promise, GET_THEN_ERROR.error);
++    } else if (then$$ === undefined) {
++      fulfill(promise, maybeThenable);
++    } else if (isFunction(then$$)) {
++      handleForeignThenable(promise, maybeThenable, then$$);
++    } else {
++      fulfill(promise, maybeThenable);
+     }
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection) {
+-      var subscribers = parent._subscribers;
+-      var length = subscribers.length;
++function _resolve(promise, value) {
++  if (promise === value) {
++    _reject(promise, selfFulfillment());
++  } else if (objectOrFunction(value)) {
++    handleMaybeThenable(promise, value, getThen(value));
++  } else {
++    fulfill(promise, value);
++  }
++}
+ 
+-      parent._onerror = null;
++function publishRejection(promise) {
++  if (promise._onerror) {
++    promise._onerror(promise._result);
++  }
+ 
+-      subscribers[length] = child;
+-      subscribers[length + lib$es6$promise$$internal$$FULFILLED] = onFulfillment;
+-      subscribers[length + lib$es6$promise$$internal$$REJECTED]  = onRejection;
++  publish(promise);
++}
+ 
+-      if (length === 0 && parent._state) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, parent);
+-      }
+-    }
++function fulfill(promise, value) {
++  if (promise._state !== PENDING) {
++    return;
++  }
+ 
+-    function lib$es6$promise$$internal$$publish(promise) {
+-      var subscribers = promise._subscribers;
+-      var settled = promise._state;
++  promise._result = value;
++  promise._state = FULFILLED;
+ 
+-      if (subscribers.length === 0) { return; }
++  if (promise._subscribers.length !== 0) {
++    asap(publish, promise);
++  }
++}
+ 
+-      var child, callback, detail = promise._result;
++function _reject(promise, reason) {
++  if (promise._state !== PENDING) {
++    return;
++  }
++  promise._state = REJECTED;
++  promise._result = reason;
+ 
+-      for (var i = 0; i < subscribers.length; i += 3) {
+-        child = subscribers[i];
+-        callback = subscribers[i + settled];
++  asap(publishRejection, promise);
++}
+ 
+-        if (child) {
+-          lib$es6$promise$$internal$$invokeCallback(settled, child, callback, detail);
+-        } else {
+-          callback(detail);
+-        }
+-      }
++function subscribe(parent, child, onFulfillment, onRejection) {
++  var _subscribers = parent._subscribers;
++  var length = _subscribers.length;
+ 
+-      promise._subscribers.length = 0;
+-    }
++  parent._onerror = null;
+ 
+-    function lib$es6$promise$$internal$$ErrorObject() {
+-      this.error = null;
+-    }
++  _subscribers[length] = child;
++  _subscribers[length + FULFILLED] = onFulfillment;
++  _subscribers[length + REJECTED] = onRejection;
+ 
+-    var lib$es6$promise$$internal$$TRY_CATCH_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++  if (length === 0 && parent._state) {
++    asap(publish, parent);
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$tryCatch(callback, detail) {
+-      try {
+-        return callback(detail);
+-      } catch(e) {
+-        lib$es6$promise$$internal$$TRY_CATCH_ERROR.error = e;
+-        return lib$es6$promise$$internal$$TRY_CATCH_ERROR;
+-      }
++function publish(promise) {
++  var subscribers = promise._subscribers;
++  var settled = promise._state;
++
++  if (subscribers.length === 0) {
++    return;
++  }
++
++  var child = undefined,
++      callback = undefined,
++      detail = promise._result;
++
++  for (var i = 0; i < subscribers.length; i += 3) {
++    child = subscribers[i];
++    callback = subscribers[i + settled];
++
++    if (child) {
++      invokeCallback(settled, child, callback, detail);
++    } else {
++      callback(detail);
+     }
++  }
+ 
+-    function lib$es6$promise$$internal$$invokeCallback(settled, promise, callback, detail) {
+-      var hasCallback = lib$es6$promise$utils$$isFunction(callback),
+-          value, error, succeeded, failed;
++  promise._subscribers.length = 0;
++}
+ 
+-      if (hasCallback) {
+-        value = lib$es6$promise$$internal$$tryCatch(callback, detail);
++function ErrorObject() {
++  this.error = null;
++}
+ 
+-        if (value === lib$es6$promise$$internal$$TRY_CATCH_ERROR) {
+-          failed = true;
+-          error = value.error;
+-          value = null;
+-        } else {
+-          succeeded = true;
+-        }
++var TRY_CATCH_ERROR = new ErrorObject();
+ 
+-        if (promise === value) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$cannotReturnOwn());
+-          return;
+-        }
++function tryCatch(callback, detail) {
++  try {
++    return callback(detail);
++  } catch (e) {
++    TRY_CATCH_ERROR.error = e;
++    return TRY_CATCH_ERROR;
++  }
++}
+ 
+-      } else {
+-        value = detail;
+-        succeeded = true;
+-      }
++function invokeCallback(settled, promise, callback, detail) {
++  var hasCallback = isFunction(callback),
++      value = undefined,
++      error = undefined,
++      succeeded = undefined,
++      failed = undefined;
+ 
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) {
+-        // noop
+-      } else if (hasCallback && succeeded) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      } else if (failed) {
+-        lib$es6$promise$$internal$$reject(promise, error);
+-      } else if (settled === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      } else if (settled === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, value);
+-      }
++  if (hasCallback) {
++    value = tryCatch(callback, detail);
++
++    if (value === TRY_CATCH_ERROR) {
++      failed = true;
++      error = value.error;
++      value = null;
++    } else {
++      succeeded = true;
+     }
+ 
+-    function lib$es6$promise$$internal$$initializePromise(promise, resolver) {
+-      try {
+-        resolver(function resolvePromise(value){
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function rejectPromise(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      } catch(e) {
+-        lib$es6$promise$$internal$$reject(promise, e);
+-      }
++    if (promise === value) {
++      _reject(promise, cannotReturnOwn());
++      return;
+     }
++  } else {
++    value = detail;
++    succeeded = true;
++  }
+ 
+-    function lib$es6$promise$promise$all$$all(entries) {
+-      return new lib$es6$promise$enumerator$$default(this, entries).promise;
++  if (promise._state !== PENDING) {
++    // noop
++  } else if (hasCallback && succeeded) {
++      _resolve(promise, value);
++    } else if (failed) {
++      _reject(promise, error);
++    } else if (settled === FULFILLED) {
++      fulfill(promise, value);
++    } else if (settled === REJECTED) {
++      _reject(promise, value);
+     }
+-    var lib$es6$promise$promise$all$$default = lib$es6$promise$promise$all$$all;
+-    function lib$es6$promise$promise$race$$race(entries) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++}
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
++function initializePromise(promise, resolver) {
++  try {
++    resolver(function resolvePromise(value) {
++      _resolve(promise, value);
++    }, function rejectPromise(reason) {
++      _reject(promise, reason);
++    });
++  } catch (e) {
++    _reject(promise, e);
++  }
++}
+ 
+-      if (!lib$es6$promise$utils$$isArray(entries)) {
+-        lib$es6$promise$$internal$$reject(promise, new TypeError('You must pass an array to race.'));
+-        return promise;
+-      }
++var id = 0;
++function nextId() {
++  return id++;
++}
+ 
+-      var length = entries.length;
++function makePromise(promise) {
++  promise[PROMISE_ID] = id++;
++  promise._state = undefined;
++  promise._result = undefined;
++  promise._subscribers = [];
++}
+ 
+-      function onFulfillment(value) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      }
++function Enumerator(Constructor, input) {
++  this._instanceConstructor = Constructor;
++  this.promise = new Constructor(noop);
+ 
+-      function onRejection(reason) {
+-        lib$es6$promise$$internal$$reject(promise, reason);
+-      }
++  if (!this.promise[PROMISE_ID]) {
++    makePromise(this.promise);
++  }
+ 
+-      for (var i = 0; promise._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        lib$es6$promise$$internal$$subscribe(Constructor.resolve(entries[i]), undefined, onFulfillment, onRejection);
+-      }
++  if (isArray(input)) {
++    this._input = input;
++    this.length = input.length;
++    this._remaining = input.length;
+ 
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$race$$default = lib$es6$promise$promise$race$$race;
+-    function lib$es6$promise$promise$reject$$reject(reason) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$reject(promise, reason);
+-      return promise;
++    this._result = new Array(this.length);
++
++    if (this.length === 0) {
++      fulfill(this.promise, this._result);
++    } else {
++      this.length = this.length || 0;
++      this._enumerate();
++      if (this._remaining === 0) {
++        fulfill(this.promise, this._result);
++      }
+     }
+-    var lib$es6$promise$promise$reject$$default = lib$es6$promise$promise$reject$$reject;
++  } else {
++    _reject(this.promise, validationError());
++  }
++}
++
++function validationError() {
++  return new Error('Array Methods must be provided an Array');
++};
++
++Enumerator.prototype._enumerate = function () {
++  var length = this.length;
++  var _input = this._input;
++
++  for (var i = 0; this._state === PENDING && i < length; i++) {
++    this._eachEntry(_input[i], i);
++  }
++};
++
++Enumerator.prototype._eachEntry = function (entry, i) {
++  var c = this._instanceConstructor;
++  var resolve$$ = c.resolve;
+ 
+-    var lib$es6$promise$promise$$counter = 0;
++  if (resolve$$ === resolve) {
++    var _then = getThen(entry);
+ 
+-    function lib$es6$promise$promise$$needsResolver() {
+-      throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++    if (_then === then && entry._state !== PENDING) {
++      this._settledAt(entry._state, i, entry._result);
++    } else if (typeof _then !== 'function') {
++      this._remaining--;
++      this._result[i] = entry;
++    } else if (c === Promise) {
++      var promise = new c(noop);
++      handleMaybeThenable(promise, entry, _then);
++      this._willSettleAt(promise, i);
++    } else {
++      this._willSettleAt(new c(function (resolve$$) {
++        return resolve$$(entry);
++      }), i);
+     }
++  } else {
++    this._willSettleAt(resolve$$(entry), i);
++  }
++};
++
++Enumerator.prototype._settledAt = function (state, i, value) {
++  var promise = this.promise;
+ 
+-    function lib$es6$promise$promise$$needsNew() {
+-      throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++  if (promise._state === PENDING) {
++    this._remaining--;
++
++    if (state === REJECTED) {
++      _reject(promise, value);
++    } else {
++      this._result[i] = value;
+     }
++  }
+ 
+-    var lib$es6$promise$promise$$default = lib$es6$promise$promise$$Promise;
+-    /**
+-      Promise objects represent the eventual result of an asynchronous operation. The
+-      primary way of interacting with a promise is through its `then` method, which
+-      registers callbacks to receive either a promise's eventual value or the reason
+-      why the promise cannot be fulfilled.
++  if (this._remaining === 0) {
++    fulfill(promise, this._result);
++  }
++};
+ 
+-      Terminology
+-      -----------
++Enumerator.prototype._willSettleAt = function (promise, i) {
++  var enumerator = this;
+ 
+-      - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
+-      - `thenable` is an object or function that defines a `then` method.
+-      - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
+-      - `exception` is a value that is thrown using the throw statement.
+-      - `reason` is a value that indicates why a promise was rejected.
+-      - `settled` the final resting state of a promise, fulfilled or rejected.
++  subscribe(promise, undefined, function (value) {
++    return enumerator._settledAt(FULFILLED, i, value);
++  }, function (reason) {
++    return enumerator._settledAt(REJECTED, i, reason);
++  });
++};
+ 
+-      A promise can be in one of three states: pending, fulfilled, or rejected.
++/**
++  `Promise.all` accepts an array of promises, and returns a new promise which
++  is fulfilled with an array of fulfillment values for the passed promises, or
++  rejected with the reason of the first passed promise to be rejected. It casts all
++  elements of the passed iterable to promises as it runs this algorithm.
+ 
+-      Promises that are fulfilled have a fulfillment value and are in the fulfilled
+-      state.  Promises that are rejected have a rejection reason and are in the
+-      rejected state.  A fulfillment value is never a thenable.
++  Example:
+ 
+-      Promises can also be said to *resolve* a value.  If this value is also a
+-      promise, then the original promise's settled state will match the value's
+-      settled state.  So a promise that *resolves* a promise that rejects will
+-      itself reject, and a promise that *resolves* a promise that fulfills will
+-      itself fulfill.
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = resolve(2);
++  let promise3 = resolve(3);
++  let promises = [ promise1, promise2, promise3 ];
+ 
++  Promise.all(promises).then(function(array){
++    // The array here would be [ 1, 2, 3 ];
++  });
++  ```
+ 
+-      Basic Usage:
+-      ------------
++  If any of the `promises` given to `all` are rejected, the first promise
++  that is rejected will be given as an argument to the returned promises's
++  rejection handler. For example:
+ 
+-      ```js
+-      var promise = new Promise(function(resolve, reject) {
+-        // on success
+-        resolve(value);
++  Example:
+ 
+-        // on failure
+-        reject(reason);
+-      });
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = reject(new Error("2"));
++  let promise3 = reject(new Error("3"));
++  let promises = [ promise1, promise2, promise3 ];
+ 
+-      promise.then(function(value) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++  Promise.all(promises).then(function(array){
++    // Code here never runs because there are rejected promises!
++  }, function(error) {
++    // error.message === "2"
++  });
++  ```
+ 
+-      Advanced Usage:
+-      ---------------
++  @method all
++  @static
++  @param {Array} entries array of promises
++  @param {String} label optional string for labeling the promise.
++  Useful for tooling.
++  @return {Promise} promise that is fulfilled when all `promises` have been
++  fulfilled, or rejected if any of them become rejected.
++  @static
++*/
++function all(entries) {
++  return new Enumerator(this, entries).promise;
++}
+ 
+-      Promises shine when abstracting away asynchronous interactions such as
+-      `XMLHttpRequest`s.
++/**
++  `Promise.race` returns a new promise which is settled in the same way as the
++  first passed promise to settle.
+ 
+-      ```js
+-      function getJSON(url) {
+-        return new Promise(function(resolve, reject){
+-          var xhr = new XMLHttpRequest();
++  Example:
+ 
+-          xhr.open('GET', url);
+-          xhr.onreadystatechange = handler;
+-          xhr.responseType = 'json';
+-          xhr.setRequestHeader('Accept', 'application/json');
+-          xhr.send();
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-          function handler() {
+-            if (this.readyState === this.DONE) {
+-              if (this.status === 200) {
+-                resolve(this.response);
+-              } else {
+-                reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
+-              }
+-            }
+-          };
+-        });
+-      }
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 2');
++    }, 100);
++  });
+ 
+-      getJSON('/posts.json').then(function(json) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++  Promise.race([promise1, promise2]).then(function(result){
++    // result === 'promise 2' because it was resolved before promise1
++    // was resolved.
++  });
++  ```
++
++  `Promise.race` is deterministic in that only the state of the first
++  settled promise matters. For example, even if other promises given to the
++  `promises` array argument are resolved, but the first settled promise has
++  become rejected before the other promises became fulfilled, the returned
++  promise will become rejected:
++
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-      Unlike callbacks, promises are great composable primitives.
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      reject(new Error('promise 2'));
++    }, 100);
++  });
+ 
+-      ```js
+-      Promise.all([
+-        getJSON('/posts'),
+-        getJSON('/comments')
+-      ]).then(function(values){
+-        values[0] // => postsJSON
+-        values[1] // => commentsJSON
++  Promise.race([promise1, promise2]).then(function(result){
++    // Code here never runs
++  }, function(reason){
++    // reason.message === 'promise 2' because promise 2 became rejected before
++    // promise 1 became fulfilled
++  });
++  ```
+ 
+-        return values;
+-      });
+-      ```
+-
+-      @class Promise
+-      @param {function} resolver
+-      Useful for tooling.
+-      @constructor
+-    */
+-    function lib$es6$promise$promise$$Promise(resolver) {
+-      this._id = lib$es6$promise$promise$$counter++;
+-      this._state = undefined;
+-      this._result = undefined;
+-      this._subscribers = [];
+-
+-      if (lib$es6$promise$$internal$$noop !== resolver) {
+-        typeof resolver !== 'function' && lib$es6$promise$promise$$needsResolver();
+-        this instanceof lib$es6$promise$promise$$Promise ? lib$es6$promise$$internal$$initializePromise(this, resolver) : lib$es6$promise$promise$$needsNew();
++  An example real-world use case is implementing timeouts:
++
++  ```javascript
++  Promise.race([ajax('foo.json'), timeout(5000)])
++  ```
++
++  @method race
++  @static
++  @param {Array} promises array of promises to observe
++  Useful for tooling.
++  @return {Promise} a promise which settles in the same way as the first passed
++  promise to settle.
++*/
++function race(entries) {
++  /*jshint validthis:true */
++  var Constructor = this;
++
++  if (!isArray(entries)) {
++    return new Constructor(function (_, reject) {
++      return reject(new TypeError('You must pass an array to race.'));
++    });
++  } else {
++    return new Constructor(function (resolve, reject) {
++      var length = entries.length;
++      for (var i = 0; i < length; i++) {
++        Constructor.resolve(entries[i]).then(resolve, reject);
+       }
+-    }
++    });
++  }
++}
+ 
+-    lib$es6$promise$promise$$Promise.all = lib$es6$promise$promise$all$$default;
+-    lib$es6$promise$promise$$Promise.race = lib$es6$promise$promise$race$$default;
+-    lib$es6$promise$promise$$Promise.resolve = lib$es6$promise$promise$resolve$$default;
+-    lib$es6$promise$promise$$Promise.reject = lib$es6$promise$promise$reject$$default;
+-    lib$es6$promise$promise$$Promise._setScheduler = lib$es6$promise$asap$$setScheduler;
+-    lib$es6$promise$promise$$Promise._setAsap = lib$es6$promise$asap$$setAsap;
+-    lib$es6$promise$promise$$Promise._asap = lib$es6$promise$asap$$asap;
++/**
++  `Promise.reject` returns a promise rejected with the passed `reason`.
++  It is shorthand for the following:
+ 
+-    lib$es6$promise$promise$$Promise.prototype = {
+-      constructor: lib$es6$promise$promise$$Promise,
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    reject(new Error('WHOOPS'));
++  });
+ 
+-    /**
+-      The primary way of interacting with a promise is through its `then` method,
+-      which registers callbacks to receive either a promise's eventual value or the
+-      reason why the promise cannot be fulfilled.
+-
+-      ```js
+-      findUser().then(function(user){
+-        // user is available
+-      }, function(reason){
+-        // user is unavailable, and you are given the reason why
+-      });
+-      ```
+-
+-      Chaining
+-      --------
+-
+-      The return value of `then` is itself a promise.  This second, 'downstream'
+-      promise is resolved with the return value of the first promise's fulfillment
+-      or rejection handler, or rejected if the handler throws an exception.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return user.name;
+-      }, function (reason) {
+-        return 'default name';
+-      }).then(function (userName) {
+-        // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
+-        // will be `'default name'`
+-      });
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      findUser().then(function (user) {
+-        throw new Error('Found user, but still unhappy');
+-      }, function (reason) {
+-        throw new Error('`findUser` rejected and we're unhappy');
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
+-        // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
+-      });
+-      ```
+-      If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        throw new PedagogicalException('Upstream error');
+-      }).then(function (value) {
+-        // never reached
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // The `PedgagocialException` is propagated all the way down to here
+-      });
+-      ```
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-      Assimilation
+-      ------------
++  ```javascript
++  let promise = Promise.reject(new Error('WHOOPS'));
+ 
+-      Sometimes the value you want to propagate to a downstream promise can only be
+-      retrieved asynchronously. This can be achieved by returning a promise in the
+-      fulfillment or rejection handler. The downstream promise will then be pending
+-      until the returned promise is settled. This is called *assimilation*.
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // The user's comments are now available
+-      });
+-      ```
++  @method reject
++  @static
++  @param {Any} reason value that the returned promise will be rejected with.
++  Useful for tooling.
++  @return {Promise} a promise rejected with the given `reason`.
++*/
++function reject(reason) {
++  /*jshint validthis:true */
++  var Constructor = this;
++  var promise = new Constructor(noop);
++  _reject(promise, reason);
++  return promise;
++}
+ 
+-      If the assimliated promise rejects, then the downstream promise will also reject.
++function needsResolver() {
++  throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++}
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // If `findCommentsByAuthor` fulfills, we'll have the value here
+-      }, function (reason) {
+-        // If `findCommentsByAuthor` rejects, we'll have the reason here
+-      });
+-      ```
++function needsNew() {
++  throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++}
+ 
+-      Simple Example
+-      --------------
++/**
++  Promise objects represent the eventual result of an asynchronous operation. The
++  primary way of interacting with a promise is through its `then` method, which
++  registers callbacks to receive either a promise's eventual value or the reason
++  why the promise cannot be fulfilled.
+ 
+-      Synchronous Example
++  Terminology
++  -----------
+ 
+-      ```javascript
+-      var result;
++  - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
++  - `thenable` is an object or function that defines a `then` method.
++  - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
++  - `exception` is a value that is thrown using the throw statement.
++  - `reason` is a value that indicates why a promise was rejected.
++  - `settled` the final resting state of a promise, fulfilled or rejected.
+ 
+-      try {
+-        result = findResult();
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
++  A promise can be in one of three states: pending, fulfilled, or rejected.
+ 
+-      Errback Example
++  Promises that are fulfilled have a fulfillment value and are in the fulfilled
++  state.  Promises that are rejected have a rejection reason and are in the
++  rejected state.  A fulfillment value is never a thenable.
+ 
+-      ```js
+-      findResult(function(result, err){
+-        if (err) {
+-          // failure
+-        } else {
+-          // success
+-        }
+-      });
+-      ```
++  Promises can also be said to *resolve* a value.  If this value is also a
++  promise, then the original promise's settled state will match the value's
++  settled state.  So a promise that *resolves* a promise that rejects will
++  itself reject, and a promise that *resolves* a promise that fulfills will
++  itself fulfill.
+ 
+-      Promise Example;
+ 
+-      ```javascript
+-      findResult().then(function(result){
+-        // success
+-      }, function(reason){
+-        // failure
+-      });
+-      ```
++  Basic Usage:
++  ------------
+ 
+-      Advanced Example
+-      --------------
++  ```js
++  let promise = new Promise(function(resolve, reject) {
++    // on success
++    resolve(value);
+ 
+-      Synchronous Example
++    // on failure
++    reject(reason);
++  });
+ 
+-      ```javascript
+-      var author, books;
++  promise.then(function(value) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
+ 
+-      try {
+-        author = findAuthor();
+-        books  = findBooksByAuthor(author);
++  Advanced Usage:
++  ---------------
++
++  Promises shine when abstracting away asynchronous interactions such as
++  `XMLHttpRequest`s.
++
++  ```js
++  function getJSON(url) {
++    return new Promise(function(resolve, reject){
++      let xhr = new XMLHttpRequest();
++
++      xhr.open('GET', url);
++      xhr.onreadystatechange = handler;
++      xhr.responseType = 'json';
++      xhr.setRequestHeader('Accept', 'application/json');
++      xhr.send();
++
++      function handler() {
++        if (this.readyState === this.DONE) {
++          if (this.status === 200) {
++            resolve(this.response);
++          } else {
++            reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
++          }
++        }
++      };
++    });
++  }
++
++  getJSON('/posts.json').then(function(json) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
++
++  Unlike callbacks, promises are great composable primitives.
++
++  ```js
++  Promise.all([
++    getJSON('/posts'),
++    getJSON('/comments')
++  ]).then(function(values){
++    values[0] // => postsJSON
++    values[1] // => commentsJSON
++
++    return values;
++  });
++  ```
++
++  @class Promise
++  @param {function} resolver
++  Useful for tooling.
++  @constructor
++*/
++function Promise(resolver) {
++  this[PROMISE_ID] = nextId();
++  this._result = this._state = undefined;
++  this._subscribers = [];
++
++  if (noop !== resolver) {
++    typeof resolver !== 'function' && needsResolver();
++    this instanceof Promise ? initializePromise(this, resolver) : needsNew();
++  }
++}
++
++Promise.all = all;
++Promise.race = race;
++Promise.resolve = resolve;
++Promise.reject = reject;
++Promise._setScheduler = setScheduler;
++Promise._setAsap = setAsap;
++Promise._asap = asap;
++
++Promise.prototype = {
++  constructor: Promise,
++
++  /**
++    The primary way of interacting with a promise is through its `then` method,
++    which registers callbacks to receive either a promise's eventual value or the
++    reason why the promise cannot be fulfilled.
++  
++    ```js
++    findUser().then(function(user){
++      // user is available
++    }, function(reason){
++      // user is unavailable, and you are given the reason why
++    });
++    ```
++  
++    Chaining
++    --------
++  
++    The return value of `then` is itself a promise.  This second, 'downstream'
++    promise is resolved with the return value of the first promise's fulfillment
++    or rejection handler, or rejected if the handler throws an exception.
++  
++    ```js
++    findUser().then(function (user) {
++      return user.name;
++    }, function (reason) {
++      return 'default name';
++    }).then(function (userName) {
++      // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
++      // will be `'default name'`
++    });
++  
++    findUser().then(function (user) {
++      throw new Error('Found user, but still unhappy');
++    }, function (reason) {
++      throw new Error('`findUser` rejected and we're unhappy');
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
++      // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
++    });
++    ```
++    If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
++  
++    ```js
++    findUser().then(function (user) {
++      throw new PedagogicalException('Upstream error');
++    }).then(function (value) {
++      // never reached
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // The `PedgagocialException` is propagated all the way down to here
++    });
++    ```
++  
++    Assimilation
++    ------------
++  
++    Sometimes the value you want to propagate to a downstream promise can only be
++    retrieved asynchronously. This can be achieved by returning a promise in the
++    fulfillment or rejection handler. The downstream promise will then be pending
++    until the returned promise is settled. This is called *assimilation*.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // The user's comments are now available
++    });
++    ```
++  
++    If the assimliated promise rejects, then the downstream promise will also reject.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // If `findCommentsByAuthor` fulfills, we'll have the value here
++    }, function (reason) {
++      // If `findCommentsByAuthor` rejects, we'll have the reason here
++    });
++    ```
++  
++    Simple Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let result;
++  
++    try {
++      result = findResult();
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++    findResult(function(result, err){
++      if (err) {
++        // failure
++      } else {
+         // success
+-      } catch(reason) {
++      }
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findResult().then(function(result){
++      // success
++    }, function(reason){
++      // failure
++    });
++    ```
++  
++    Advanced Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let author, books;
++  
++    try {
++      author = findAuthor();
++      books  = findBooksByAuthor(author);
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++  
++    function foundBooks(books) {
++  
++    }
++  
++    function failure(reason) {
++  
++    }
++  
++    findAuthor(function(author, err){
++      if (err) {
++        failure(err);
+         // failure
++      } else {
++        try {
++          findBoooksByAuthor(author, function(books, err) {
++            if (err) {
++              failure(err);
++            } else {
++              try {
++                foundBooks(books);
++              } catch(reason) {
++                failure(reason);
++              }
++            }
++          });
++        } catch(error) {
++          failure(err);
++        }
++        // success
+       }
+-      ```
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findAuthor().
++      then(findBooksByAuthor).
++      then(function(books){
++        // found books
++    }).catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method then
++    @param {Function} onFulfilled
++    @param {Function} onRejected
++    Useful for tooling.
++    @return {Promise}
++  */
++  then: then,
++
++  /**
++    `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
++    as the catch block of a try/catch statement.
++  
++    ```js
++    function findAuthor(){
++      throw new Error('couldn't find that author');
++    }
++  
++    // synchronous
++    try {
++      findAuthor();
++    } catch(reason) {
++      // something went wrong
++    }
++  
++    // async with promises
++    findAuthor().catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method catch
++    @param {Function} onRejection
++    Useful for tooling.
++    @return {Promise}
++  */
++  'catch': function _catch(onRejection) {
++    return this.then(null, onRejection);
++  }
++};
+ 
+-      Errback Example
++function polyfill() {
++    var local = undefined;
+ 
+-      ```js
++    if (typeof global !== 'undefined') {
++        local = global;
++    } else if (typeof self !== 'undefined') {
++        local = self;
++    } else {
++        try {
++            local = Function('return this')();
++        } catch (e) {
++            throw new Error('polyfill failed because global object is unavailable in this environment');
++        }
++    }
+ 
+-      function foundBooks(books) {
++    var P = local.Promise;
+ 
+-      }
++    if (P) {
++        var promiseToString = null;
++        try {
++            promiseToString = Object.prototype.toString.call(P.resolve());
++        } catch (e) {
++            // silently ignored
++        }
+ 
+-      function failure(reason) {
++        if (promiseToString === '[object Promise]' && !P.cast) {
++            return;
++        }
++    }
+ 
+-      }
++    local.Promise = Promise;
++}
+ 
+-      findAuthor(function(author, err){
+-        if (err) {
+-          failure(err);
+-          // failure
+-        } else {
+-          try {
+-            findBoooksByAuthor(author, function(books, err) {
+-              if (err) {
+-                failure(err);
+-              } else {
+-                try {
+-                  foundBooks(books);
+-                } catch(reason) {
+-                  failure(reason);
+-                }
+-              }
+-            });
+-          } catch(error) {
+-            failure(err);
+-          }
+-          // success
+-        }
+-      });
+-      ```
++polyfill();
++// Strange compat..
++Promise.polyfill = polyfill;
++Promise.Promise = Promise;
+ 
+-      Promise Example;
++return Promise;
+ 
+-      ```javascript
+-      findAuthor().
+-        then(findBooksByAuthor).
+-        then(function(books){
+-          // found books
+-      }).catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
++})));
++
++}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"_process":19}],16:[function(require,module,exports){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-      @method then
+-      @param {Function} onFulfilled
+-      @param {Function} onRejected
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      then: lib$es6$promise$then$$default,
++function EventEmitter() {
++  this._events = this._events || {};
++  this._maxListeners = this._maxListeners || undefined;
++}
++module.exports = EventEmitter;
+ 
+-    /**
+-      `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
+-      as the catch block of a try/catch statement.
++// Backwards-compat with node 0.10.x
++EventEmitter.EventEmitter = EventEmitter;
+ 
+-      ```js
+-      function findAuthor(){
+-        throw new Error('couldn't find that author');
+-      }
++EventEmitter.prototype._events = undefined;
++EventEmitter.prototype._maxListeners = undefined;
+ 
+-      // synchronous
+-      try {
+-        findAuthor();
+-      } catch(reason) {
+-        // something went wrong
+-      }
++// By default EventEmitters will print a warning if more than 10 listeners are
++// added to it. This is a useful default which helps finding memory leaks.
++EventEmitter.defaultMaxListeners = 10;
+ 
+-      // async with promises
+-      findAuthor().catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
+-
+-      @method catch
+-      @param {Function} onRejection
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      'catch': function(onRejection) {
+-        return this.then(null, onRejection);
+-      }
+-    };
+-    var lib$es6$promise$enumerator$$default = lib$es6$promise$enumerator$$Enumerator;
+-    function lib$es6$promise$enumerator$$Enumerator(Constructor, input) {
+-      this._instanceConstructor = Constructor;
+-      this.promise = new Constructor(lib$es6$promise$$internal$$noop);
++// Obviously not all Emitters should be limited to 10. This function allows
++// that to be increased. Set to zero for unlimited.
++EventEmitter.prototype.setMaxListeners = function(n) {
++  if (!isNumber(n) || n < 0 || isNaN(n))
++    throw TypeError('n must be a positive number');
++  this._maxListeners = n;
++  return this;
++};
+ 
+-      if (Array.isArray(input)) {
+-        this._input     = input;
+-        this.length     = input.length;
+-        this._remaining = input.length;
++EventEmitter.prototype.emit = function(type) {
++  var er, handler, len, args, i, listeners;
+ 
+-        this._result = new Array(this.length);
++  if (!this._events)
++    this._events = {};
+ 
+-        if (this.length === 0) {
+-          lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-        } else {
+-          this.length = this.length || 0;
+-          this._enumerate();
+-          if (this._remaining === 0) {
+-            lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-          }
+-        }
++  // If there is no 'error' event listener then throw.
++  if (type === 'error') {
++    if (!this._events.error ||
++        (isObject(this._events.error) && !this._events.error.length)) {
++      er = arguments[1];
++      if (er instanceof Error) {
++        throw er; // Unhandled 'error' event
+       } else {
+-        lib$es6$promise$$internal$$reject(this.promise, this._validationError());
++        // At least give some kind of context to the user
++        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
++        err.context = er;
++        throw err;
+       }
+     }
++  }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._validationError = function() {
+-      return new Error('Array Methods must be provided an Array');
+-    };
++  handler = this._events[type];
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._enumerate = function() {
+-      var length  = this.length;
+-      var input   = this._input;
++  if (isUndefined(handler))
++    return false;
+ 
+-      for (var i = 0; this._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        this._eachEntry(input[i], i);
+-      }
+-    };
++  if (isFunction(handler)) {
++    switch (arguments.length) {
++      // fast cases
++      case 1:
++        handler.call(this);
++        break;
++      case 2:
++        handler.call(this, arguments[1]);
++        break;
++      case 3:
++        handler.call(this, arguments[1], arguments[2]);
++        break;
++      // slower
++      default:
++        args = Array.prototype.slice.call(arguments, 1);
++        handler.apply(this, args);
++    }
++  } else if (isObject(handler)) {
++    args = Array.prototype.slice.call(arguments, 1);
++    listeners = handler.slice();
++    len = listeners.length;
++    for (i = 0; i < len; i++)
++      listeners[i].apply(this, args);
++  }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._eachEntry = function(entry, i) {
+-      var c = this._instanceConstructor;
+-      var resolve = c.resolve;
++  return true;
++};
+ 
+-      if (resolve === lib$es6$promise$promise$resolve$$default) {
+-        var then = lib$es6$promise$$internal$$getThen(entry);
++EventEmitter.prototype.addListener = function(type, listener) {
++  var m;
+ 
+-        if (then === lib$es6$promise$then$$default &&
+-            entry._state !== lib$es6$promise$$internal$$PENDING) {
+-          this._settledAt(entry._state, i, entry._result);
+-        } else if (typeof then !== 'function') {
+-          this._remaining--;
+-          this._result[i] = entry;
+-        } else if (c === lib$es6$promise$promise$$default) {
+-          var promise = new c(lib$es6$promise$$internal$$noop);
+-          lib$es6$promise$$internal$$handleMaybeThenable(promise, entry, then);
+-          this._willSettleAt(promise, i);
+-        } else {
+-          this._willSettleAt(new c(function(resolve) { resolve(entry); }), i);
+-        }
+-      } else {
+-        this._willSettleAt(resolve(entry), i);
+-      }
+-    };
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._settledAt = function(state, i, value) {
+-      var promise = this.promise;
++  if (!this._events)
++    this._events = {};
+ 
+-      if (promise._state === lib$es6$promise$$internal$$PENDING) {
+-        this._remaining--;
++  // To avoid recursion in the case that type === "newListener"! Before
++  // adding it to the listeners, first emit "newListener".
++  if (this._events.newListener)
++    this.emit('newListener', type,
++              isFunction(listener.listener) ?
++              listener.listener : listener);
+ 
+-        if (state === lib$es6$promise$$internal$$REJECTED) {
+-          lib$es6$promise$$internal$$reject(promise, value);
+-        } else {
+-          this._result[i] = value;
+-        }
+-      }
++  if (!this._events[type])
++    // Optimize the case of one listener. Don't need the extra array object.
++    this._events[type] = listener;
++  else if (isObject(this._events[type]))
++    // If we've already got an array, just append.
++    this._events[type].push(listener);
++  else
++    // Adding the second element, need to change to array.
++    this._events[type] = [this._events[type], listener];
+ 
+-      if (this._remaining === 0) {
+-        lib$es6$promise$$internal$$fulfill(promise, this._result);
++  // Check for listener leak
++  if (isObject(this._events[type]) && !this._events[type].warned) {
++    if (!isUndefined(this._maxListeners)) {
++      m = this._maxListeners;
++    } else {
++      m = EventEmitter.defaultMaxListeners;
++    }
++
++    if (m && m > 0 && this._events[type].length > m) {
++      this._events[type].warned = true;
++      console.error('(node) warning: possible EventEmitter memory ' +
++                    'leak detected. %d listeners added. ' +
++                    'Use emitter.setMaxListeners() to increase limit.',
++                    this._events[type].length);
++      if (typeof console.trace === 'function') {
++        // not supported in IE 10
++        console.trace();
+       }
+-    };
++    }
++  }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._willSettleAt = function(promise, i) {
+-      var enumerator = this;
++  return this;
++};
+ 
+-      lib$es6$promise$$internal$$subscribe(promise, undefined, function(value) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$FULFILLED, i, value);
+-      }, function(reason) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$REJECTED, i, reason);
+-      });
+-    };
+-    function lib$es6$promise$polyfill$$polyfill() {
+-      var local;
++EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+ 
+-      if (typeof global !== 'undefined') {
+-          local = global;
+-      } else if (typeof self !== 'undefined') {
+-          local = self;
+-      } else {
+-          try {
+-              local = Function('return this')();
+-          } catch (e) {
+-              throw new Error('polyfill failed because global object is unavailable in this environment');
+-          }
+-      }
++EventEmitter.prototype.once = function(type, listener) {
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-      var P = local.Promise;
++  var fired = false;
+ 
+-      if (P && Object.prototype.toString.call(P.resolve()) === '[object Promise]' && !P.cast) {
+-        return;
++  function g() {
++    this.removeListener(type, g);
++
++    if (!fired) {
++      fired = true;
++      listener.apply(this, arguments);
++    }
++  }
++
++  g.listener = listener;
++  this.on(type, g);
++
++  return this;
++};
++
++// emits a 'removeListener' event iff the listener was removed
++EventEmitter.prototype.removeListener = function(type, listener) {
++  var list, position, length, i;
++
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
++
++  if (!this._events || !this._events[type])
++    return this;
++
++  list = this._events[type];
++  length = list.length;
++  position = -1;
++
++  if (list === listener ||
++      (isFunction(list.listener) && list.listener === listener)) {
++    delete this._events[type];
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
++
++  } else if (isObject(list)) {
++    for (i = length; i-- > 0;) {
++      if (list[i] === listener ||
++          (list[i].listener && list[i].listener === listener)) {
++        position = i;
++        break;
+       }
++    }
+ 
+-      local.Promise = lib$es6$promise$promise$$default;
++    if (position < 0)
++      return this;
++
++    if (list.length === 1) {
++      list.length = 0;
++      delete this._events[type];
++    } else {
++      list.splice(position, 1);
+     }
+-    var lib$es6$promise$polyfill$$default = lib$es6$promise$polyfill$$polyfill;
+ 
+-    var lib$es6$promise$umd$$ES6Promise = {
+-      'Promise': lib$es6$promise$promise$$default,
+-      'polyfill': lib$es6$promise$polyfill$$default
+-    };
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
++  }
++
++  return this;
++};
++
++EventEmitter.prototype.removeAllListeners = function(type) {
++  var key, listeners;
++
++  if (!this._events)
++    return this;
+ 
+-    /* global define:true module:true window: true */
+-    if (typeof define === 'function' && define['amd']) {
+-      define(function() { return lib$es6$promise$umd$$ES6Promise; });
+-    } else if (typeof module !== 'undefined' && module['exports']) {
+-      module['exports'] = lib$es6$promise$umd$$ES6Promise;
+-    } else if (typeof this !== 'undefined') {
+-      this['ES6Promise'] = lib$es6$promise$umd$$ES6Promise;
++  // not listening for removeListener, no need to emit
++  if (!this._events.removeListener) {
++    if (arguments.length === 0)
++      this._events = {};
++    else if (this._events[type])
++      delete this._events[type];
++    return this;
++  }
++
++  // emit removeListener for all listeners on all events
++  if (arguments.length === 0) {
++    for (key in this._events) {
++      if (key === 'removeListener') continue;
++      this.removeAllListeners(key);
+     }
++    this.removeAllListeners('removeListener');
++    this._events = {};
++    return this;
++  }
+ 
+-    lib$es6$promise$polyfill$$default();
+-}).call(this);
++  listeners = this._events[type];
+ 
++  if (isFunction(listeners)) {
++    this.removeListener(type, listeners);
++  } else if (listeners) {
++    // LIFO order
++    while (listeners.length)
++      this.removeListener(type, listeners[listeners.length - 1]);
++  }
++  delete this._events[type];
+ 
+-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"_process":15}],18:[function(require,module,exports){
++  return this;
++};
++
++EventEmitter.prototype.listeners = function(type) {
++  var ret;
++  if (!this._events || !this._events[type])
++    ret = [];
++  else if (isFunction(this._events[type]))
++    ret = [this._events[type]];
++  else
++    ret = this._events[type].slice();
++  return ret;
++};
++
++EventEmitter.prototype.listenerCount = function(type) {
++  if (this._events) {
++    var evlistener = this._events[type];
++
++    if (isFunction(evlistener))
++      return 1;
++    else if (evlistener)
++      return evlistener.length;
++  }
++  return 0;
++};
++
++EventEmitter.listenerCount = function(emitter, type) {
++  return emitter.listenerCount(type);
++};
++
++function isFunction(arg) {
++  return typeof arg === 'function';
++}
++
++function isNumber(arg) {
++  return typeof arg === 'number';
++}
++
++function isObject(arg) {
++  return typeof arg === 'object' && arg !== null;
++}
++
++function isUndefined(arg) {
++  return arg === void 0;
++}
++
++},{}],17:[function(require,module,exports){
+ /**
+  * inspired by is-number <https://github.com/jonschlinkert/is-number>
+  * but significantly simplified and sped up by ignoring number and string constructors
+@@ -11288,7 +11398,7 @@ module.exports = function(n) {
+     return n - n < 1;
+ };
+ 
+-},{}],19:[function(require,module,exports){
++},{}],18:[function(require,module,exports){
+ module.exports = fromQuat;
+ 
+ /**
+@@ -11336,21 +11446,202 @@ function fromQuat(out, q) {
+ 
+     return out;
+ };
++},{}],19:[function(require,module,exports){
++// shim for using process in browser
++var process = module.exports = {};
++
++// cached from whatever global is present so that test runners that stub it
++// don't break things.  But we need to wrap it in a try catch in case it is
++// wrapped in strict mode code which doesn't define any globals.  It's inside a
++// function because try/catches deoptimize in certain engines.
++
++var cachedSetTimeout;
++var cachedClearTimeout;
++
++function defaultSetTimout() {
++    throw new Error('setTimeout has not been defined');
++}
++function defaultClearTimeout () {
++    throw new Error('clearTimeout has not been defined');
++}
++(function () {
++    try {
++        if (typeof setTimeout === 'function') {
++            cachedSetTimeout = setTimeout;
++        } else {
++            cachedSetTimeout = defaultSetTimout;
++        }
++    } catch (e) {
++        cachedSetTimeout = defaultSetTimout;
++    }
++    try {
++        if (typeof clearTimeout === 'function') {
++            cachedClearTimeout = clearTimeout;
++        } else {
++            cachedClearTimeout = defaultClearTimeout;
++        }
++    } catch (e) {
++        cachedClearTimeout = defaultClearTimeout;
++    }
++} ())
++function runTimeout(fun) {
++    if (cachedSetTimeout === setTimeout) {
++        //normal enviroments in sane situations
++        return setTimeout(fun, 0);
++    }
++    // if setTimeout wasn't available but was latter defined
++    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
++        cachedSetTimeout = setTimeout;
++        return setTimeout(fun, 0);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedSetTimeout(fun, 0);
++    } catch(e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
++            return cachedSetTimeout.call(null, fun, 0);
++        } catch(e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
++            return cachedSetTimeout.call(this, fun, 0);
++        }
++    }
++
++
++}
++function runClearTimeout(marker) {
++    if (cachedClearTimeout === clearTimeout) {
++        //normal enviroments in sane situations
++        return clearTimeout(marker);
++    }
++    // if clearTimeout wasn't available but was latter defined
++    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
++        cachedClearTimeout = clearTimeout;
++        return clearTimeout(marker);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedClearTimeout(marker);
++    } catch (e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
++            return cachedClearTimeout.call(null, marker);
++        } catch (e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
++            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
++            return cachedClearTimeout.call(this, marker);
++        }
++    }
++
++
++
++}
++var queue = [];
++var draining = false;
++var currentQueue;
++var queueIndex = -1;
++
++function cleanUpNextTick() {
++    if (!draining || !currentQueue) {
++        return;
++    }
++    draining = false;
++    if (currentQueue.length) {
++        queue = currentQueue.concat(queue);
++    } else {
++        queueIndex = -1;
++    }
++    if (queue.length) {
++        drainQueue();
++    }
++}
++
++function drainQueue() {
++    if (draining) {
++        return;
++    }
++    var timeout = runTimeout(cleanUpNextTick);
++    draining = true;
++
++    var len = queue.length;
++    while(len) {
++        currentQueue = queue;
++        queue = [];
++        while (++queueIndex < len) {
++            if (currentQueue) {
++                currentQueue[queueIndex].run();
++            }
++        }
++        queueIndex = -1;
++        len = queue.length;
++    }
++    currentQueue = null;
++    draining = false;
++    runClearTimeout(timeout);
++}
++
++process.nextTick = function (fun) {
++    var args = new Array(arguments.length - 1);
++    if (arguments.length > 1) {
++        for (var i = 1; i < arguments.length; i++) {
++            args[i - 1] = arguments[i];
++        }
++    }
++    queue.push(new Item(fun, args));
++    if (queue.length === 1 && !draining) {
++        runTimeout(drainQueue);
++    }
++};
++
++// v8 likes predictible objects
++function Item(fun, array) {
++    this.fun = fun;
++    this.array = array;
++}
++Item.prototype.run = function () {
++    this.fun.apply(null, this.array);
++};
++process.title = 'browser';
++process.browser = true;
++process.env = {};
++process.argv = [];
++process.version = ''; // empty string to avoid regexp issues
++process.versions = {};
++
++function noop() {}
++
++process.on = noop;
++process.addListener = noop;
++process.once = noop;
++process.off = noop;
++process.removeListener = noop;
++process.removeAllListeners = noop;
++process.emit = noop;
++
++process.binding = function (name) {
++    throw new Error('process.binding is not supported');
++};
++
++process.cwd = function () { return '/' };
++process.chdir = function (dir) {
++    throw new Error('process.chdir is not supported');
++};
++process.umask = function() { return 0; };
++
+ },{}],20:[function(require,module,exports){
+-// TinyColor v1.3.0
++// TinyColor v1.4.1
+ // https://github.com/bgrins/TinyColor
+ // Brian Grinstead, MIT License
+ 
+-(function() {
++(function(Math) {
+ 
+ var trimLeft = /^\s+/,
+     trimRight = /\s+$/,
+     tinyCounter = 0,
+-    math = Math,
+-    mathRound = math.round,
+-    mathMin = math.min,
+-    mathMax = math.max,
+-    mathRandom = math.random;
++    mathRound = Math.round,
++    mathMin = Math.min,
++    mathMax = Math.max,
++    mathRandom = Math.random;
+ 
+ function tinycolor (color, opts) {
+ 
+@@ -11458,11 +11749,11 @@ tinycolor.prototype = {
+     toHexString: function(allow3Char) {
+         return '#' + this.toHex(allow3Char);
+     },
+-    toHex8: function() {
+-        return rgbaToHex(this._r, this._g, this._b, this._a);
++    toHex8: function(allow4Char) {
++        return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
+     },
+-    toHex8String: function() {
+-        return '#' + this.toHex8();
++    toHex8String: function(allow4Char) {
++        return '#' + this.toHex8(allow4Char);
+     },
+     toRgb: function() {
+         return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
+@@ -11492,13 +11783,13 @@ tinycolor.prototype = {
+         return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
+     },
+     toFilter: function(secondColor) {
+-        var hex8String = '#' + rgbaToHex(this._r, this._g, this._b, this._a);
++        var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
+         var secondHex8String = hex8String;
+         var gradientType = this._gradientType ? "GradientType = 1, " : "";
+ 
+         if (secondColor) {
+             var s = tinycolor(secondColor);
+-            secondHex8String = s.toHex8String();
++            secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
+         }
+ 
+         return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
+@@ -11509,7 +11800,7 @@ tinycolor.prototype = {
+ 
+         var formattedString = false;
+         var hasAlpha = this._a < 1 && this._a >= 0;
+-        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "name");
++        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");
+ 
+         if (needsAlphaFormat) {
+             // Special case for "transparent", all other non-alpha formats
+@@ -11531,6 +11822,9 @@ tinycolor.prototype = {
+         if (format === "hex3") {
+             formattedString = this.toHexString(true);
+         }
++        if (format === "hex4") {
++            formattedString = this.toHex8String(true);
++        }
+         if (format === "hex8") {
+             formattedString = this.toHex8String();
+         }
+@@ -11643,6 +11937,9 @@ function inputToRGB(color) {
+ 
+     var rgb = { r: 0, g: 0, b: 0 };
+     var a = 1;
++    var s = null;
++    var v = null;
++    var l = null;
+     var ok = false;
+     var format = false;
+ 
+@@ -11651,22 +11948,22 @@ function inputToRGB(color) {
+     }
+ 
+     if (typeof color == "object") {
+-        if (color.hasOwnProperty("r") && color.hasOwnProperty("g") && color.hasOwnProperty("b")) {
++        if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
+             rgb = rgbToRgb(color.r, color.g, color.b);
+             ok = true;
+             format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
+         }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("v")) {
+-            color.s = convertToPercentage(color.s);
+-            color.v = convertToPercentage(color.v);
+-            rgb = hsvToRgb(color.h, color.s, color.v);
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
++            s = convertToPercentage(color.s);
++            v = convertToPercentage(color.v);
++            rgb = hsvToRgb(color.h, s, v);
+             ok = true;
+             format = "hsv";
+         }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("l")) {
+-            color.s = convertToPercentage(color.s);
+-            color.l = convertToPercentage(color.l);
+-            rgb = hslToRgb(color.h, color.s, color.l);
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
++            s = convertToPercentage(color.s);
++            l = convertToPercentage(color.l);
++            rgb = hslToRgb(color.h, s, l);
+             ok = true;
+             format = "hsl";
+         }
+@@ -11813,7 +12110,7 @@ function rgbToHsv(r, g, b) {
+     s = bound01(s, 100);
+     v = bound01(v, 100);
+ 
+-    var i = math.floor(h),
++    var i = Math.floor(h),
+         f = h - i,
+         p = v * (1 - s),
+         q = v * (1 - f * s),
+@@ -11848,9 +12145,29 @@ function rgbToHex(r, g, b, allow3Char) {
+ 
+ // `rgbaToHex`
+ // Converts an RGBA color plus alpha transparency to hex
+-// Assumes r, g, b and a are contained in the set [0, 255]
+-// Returns an 8 character hex
+-function rgbaToHex(r, g, b, a) {
++// Assumes r, g, b are contained in the set [0, 255] and
++// a in [0, 1]. Returns a 4 or 8 character rgba hex
++function rgbaToHex(r, g, b, a, allow4Char) {
++
++    var hex = [
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16)),
++        pad2(convertDecimalToHex(a))
++    ];
++
++    // Return a 4 character hex if possible
++    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
++        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
++    }
++
++    return hex.join("");
++}
++
++// `rgbaToArgbHex`
++// Converts an RGBA color to an ARGB Hex8 string
++// Rarely used, but required for "toFilter()"
++function rgbaToArgbHex(r, g, b, a) {
+ 
+     var hex = [
+         pad2(convertDecimalToHex(a)),
+@@ -11932,7 +12249,7 @@ function darken (color, amount) {
+ // Values outside of this range will be wrapped into this range.
+ function spin(color, amount) {
+     var hsl = tinycolor(color).toHsl();
+-    var hue = (mathRound(hsl.h) + amount) % 360;
++    var hue = (hsl.h + amount) % 360;
+     hsl.h = hue < 0 ? 360 + hue : hue;
+     return tinycolor(hsl);
+ }
+@@ -12019,26 +12336,12 @@ tinycolor.mix = function(color1, color2, amount) {
+     var rgb2 = tinycolor(color2).toRgb();
+ 
+     var p = amount / 100;
+-    var w = p * 2 - 1;
+-    var a = rgb2.a - rgb1.a;
+-
+-    var w1;
+-
+-    if (w * a == -1) {
+-        w1 = w;
+-    } else {
+-        w1 = (w + a) / (1 + w * a);
+-    }
+-
+-    w1 = (w1 + 1) / 2;
+-
+-    var w2 = 1 - w1;
+ 
+     var rgba = {
+-        r: rgb2.r * w1 + rgb1.r * w2,
+-        g: rgb2.g * w1 + rgb1.g * w2,
+-        b: rgb2.b * w1 + rgb1.b * w2,
+-        a: rgb2.a * p  + rgb1.a * (1 - p)
++        r: ((rgb2.r - rgb1.r) * p) + rgb1.r,
++        g: ((rgb2.g - rgb1.g) * p) + rgb1.g,
++        b: ((rgb2.b - rgb1.b) * p) + rgb1.b,
++        a: ((rgb2.a - rgb1.a) * p) + rgb1.a
+     };
+ 
+     return tinycolor(rgba);
+@@ -12324,7 +12627,7 @@ function bound01(n, max) {
+     }
+ 
+     // Handle floating point rounding errors
+-    if ((math.abs(n - max) < 0.000001)) {
++    if ((Math.abs(n - max) < 0.000001)) {
+         return 1;
+     }
+ 
+@@ -12394,6 +12697,7 @@ var matchers = (function() {
+     var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+ 
+     return {
++        CSS_UNIT: new RegExp(CSS_UNIT),
+         rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
+         rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
+         hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
+@@ -12402,10 +12706,18 @@ var matchers = (function() {
+         hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
+         hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+         hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
++        hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+         hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
+     };
+ })();
+ 
++// `isValidCSSUnit`
++// Take in a single string / number and check to see if it looks like a CSS unit
++// (see `matchers` above for definition).
++function isValidCSSUnit(color) {
++    return !!matchers.CSS_UNIT.exec(color);
++}
++
+ // `stringInputToObject`
+ // Permissive string parsing.  Take in a number of formats, and output an object
+ // based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
+@@ -12446,10 +12758,10 @@ function stringInputToObject(color) {
+     }
+     if ((match = matchers.hex8.exec(color))) {
+         return {
+-            a: convertHexToDecimal(match[1]),
+-            r: parseIntFromHex(match[2]),
+-            g: parseIntFromHex(match[3]),
+-            b: parseIntFromHex(match[4]),
++            r: parseIntFromHex(match[1]),
++            g: parseIntFromHex(match[2]),
++            b: parseIntFromHex(match[3]),
++            a: convertHexToDecimal(match[4]),
+             format: named ? "name" : "hex8"
+         };
+     }
+@@ -12461,6 +12773,15 @@ function stringInputToObject(color) {
+             format: named ? "name" : "hex"
+         };
+     }
++    if ((match = matchers.hex4.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1] + '' + match[1]),
++            g: parseIntFromHex(match[2] + '' + match[2]),
++            b: parseIntFromHex(match[3] + '' + match[3]),
++            a: convertHexToDecimal(match[4] + '' + match[4]),
++            format: named ? "name" : "hex8"
++        };
++    }
+     if ((match = matchers.hex3.exec(color))) {
+         return {
+             r: parseIntFromHex(match[1] + '' + match[1]),
+@@ -12502,7 +12823,7 @@ else {
+     window.tinycolor = tinycolor;
+ }
+ 
+-})();
++})(Math);
+ 
+ },{}],21:[function(require,module,exports){
+ /**
+@@ -13768,7 +14089,7 @@ function lineIntersect(x1, y1, x2, y2, x3, y3, x4, y4) {
+     return {x: x1 + a * t, y: y1 + d * t};
+ }
+ 
+-},{"../../lib":102,"../../lib/setcursor":111,"../../lib/svg_text_utils":113,"../../plotly":120,"../../plots/cartesian/axes":123,"../color":25,"../dragelement":46,"../drawing":48,"./arrow_paths":21,"./attributes":22,"d3":16,"fast-isnumeric":18}],24:[function(require,module,exports){
++},{"../../lib":102,"../../lib/setcursor":111,"../../lib/svg_text_utils":113,"../../plotly":120,"../../plots/cartesian/axes":123,"../color":25,"../dragelement":46,"../drawing":48,"./arrow_paths":21,"./attributes":22,"d3":14,"fast-isnumeric":17}],24:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -13962,7 +14283,7 @@ function cleanOne(val) {
+     return 'rgb(' + rgbStr + ')';
+ }
+ 
+-},{"./attributes":24,"fast-isnumeric":18,"tinycolor2":20}],26:[function(require,module,exports){
++},{"./attributes":24,"fast-isnumeric":17,"tinycolor2":20}],26:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -14814,7 +15135,7 @@ module.exports = function draw(gd, id) {
+     return component;
+ };
+ 
+-},{"../../lib":102,"../../lib/extend":100,"../../lib/setcursor":111,"../../plotly":120,"../../plots/cartesian/axes":123,"../../plots/cartesian/axis_defaults":124,"../../plots/cartesian/layout_attributes":132,"../../plots/cartesian/position_defaults":135,"../../plots/plots":143,"../color":25,"../dragelement":46,"../drawing":48,"../titles":88,"./attributes":26,"d3":16,"tinycolor2":20}],29:[function(require,module,exports){
++},{"../../lib":102,"../../lib/extend":100,"../../lib/setcursor":111,"../../plotly":120,"../../plots/cartesian/axes":123,"../../plots/cartesian/axis_defaults":124,"../../plots/cartesian/layout_attributes":132,"../../plots/cartesian/position_defaults":135,"../../plots/plots":143,"../color":25,"../dragelement":46,"../drawing":48,"../titles":88,"./attributes":26,"d3":14,"tinycolor2":20}],29:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -15099,7 +15420,7 @@ module.exports = function colorScaleDefaults(traceIn, traceOut, layout, coerce,
+     if(showScale) colorbarDefaults(containerIn, containerOut, layout);
+ };
+ 
+-},{"../../lib":102,"../colorbar/defaults":27,"../colorbar/has_colorbar":29,"./flip_scale":36,"./is_valid_scale":40,"fast-isnumeric":18}],36:[function(require,module,exports){
++},{"../../lib":102,"../colorbar/defaults":27,"../colorbar/has_colorbar":29,"./flip_scale":36,"./is_valid_scale":40,"fast-isnumeric":17}],36:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -15210,7 +15531,7 @@ module.exports = function hasColorscale(trace, containerStr) {
+     );
+ };
+ 
+-},{"../../lib":102,"./is_valid_scale":40,"fast-isnumeric":18}],39:[function(require,module,exports){
++},{"../../lib":102,"./is_valid_scale":40,"fast-isnumeric":17}],39:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -15349,7 +15670,7 @@ module.exports = function makeScaleFunction(scl, cmin, cmax) {
+     };
+ };
+ 
+-},{"../../lib":102,"../color":25,"d3":16,"fast-isnumeric":18,"tinycolor2":20}],43:[function(require,module,exports){
++},{"../../lib":102,"../color":25,"d3":14,"fast-isnumeric":17,"tinycolor2":20}],43:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -16351,7 +16672,7 @@ drawing.setClipUrl = function(s, localId) {
+     s.attr('clip-path', 'url(' + url + ')');
+ };
+ 
+-},{"../../constants/xmlns_namespaces":94,"../../lib":102,"../../lib/svg_text_utils":113,"../../plots/plots":143,"../../traces/scatter/make_bubble_size_func":250,"../../traces/scatter/subtypes":255,"../color":25,"../colorscale":39,"./symbol_defs":49,"d3":16,"fast-isnumeric":18}],49:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":94,"../../lib":102,"../../lib/svg_text_utils":113,"../../plots/plots":143,"../../traces/scatter/make_bubble_size_func":250,"../../traces/scatter/subtypes":255,"../color":25,"../colorscale":39,"./symbol_defs":49,"d3":14,"fast-isnumeric":17}],49:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -16827,7 +17148,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"d3":16}],50:[function(require,module,exports){
++},{"d3":14}],50:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -16989,7 +17310,7 @@ function calcOneAxis(calcTrace, trace, axis, coord) {
+     Axes.expand(axis, vals, {padded: true});
+ }
+ 
+-},{"../../plots/cartesian/axes":123,"../../plots/plots":143,"./compute_error":52,"fast-isnumeric":18}],52:[function(require,module,exports){
++},{"../../plots/cartesian/axes":123,"../../plots/plots":143,"./compute_error":52,"fast-isnumeric":17}],52:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17162,7 +17483,7 @@ module.exports = function(traceIn, traceOut, defaultColor, opts) {
+     }
+ };
+ 
+-},{"../../lib":102,"../../plots/plots":143,"./attributes":50,"fast-isnumeric":18}],54:[function(require,module,exports){
++},{"../../lib":102,"../../plots/plots":143,"./attributes":50,"fast-isnumeric":17}],54:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17342,7 +17663,7 @@ function errorCoords(d, xa, ya) {
+     return out;
+ }
+ 
+-},{"../../lib":102,"../../traces/scatter/subtypes":255,"d3":16,"fast-isnumeric":18}],56:[function(require,module,exports){
++},{"../../lib":102,"../../traces/scatter/subtypes":255,"d3":14,"fast-isnumeric":17}],56:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17379,7 +17700,7 @@ module.exports = function style(traces) {
+     });
+ };
+ 
+-},{"../color":25,"d3":16}],57:[function(require,module,exports){
++},{"../color":25,"d3":14}],57:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17733,7 +18054,7 @@ module.exports = function draw(gd) {
+     imagesAbove.each(applyAttributes);
+ };
+ 
+-},{"../../plots/cartesian/axes":123,"../drawing":48,"d3":16}],60:[function(require,module,exports){
++},{"../../plots/cartesian/axes":123,"../drawing":48,"d3":14}],60:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17850,6 +18171,13 @@ module.exports = {
+         
+         
+     },
++    horizontalspacing: {
++        valType: 'enumerated',
++        values: ['column', 'wrapped'],
++        dflt: ['column'],
++        
++        
++    },
+     traceorder: {
+         valType: 'flaglist',
+         flags: ['reversed', 'grouped'],
+@@ -17939,6 +18267,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+ 
+     var visibleTraces = 0,
+         defaultOrder = 'normal',
++        defaultHorizontalSpacing = 'column',
+         defaultX,
+         defaultY,
+         defaultXAnchor,
+@@ -18003,6 +18332,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+     coerce('xanchor', defaultXAnchor);
+     coerce('y', defaultY);
+     coerce('yanchor', defaultYAnchor);
++    coerce('horizontalspacing', defaultHorizontalSpacing);
+     Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
+ };
+ 
+@@ -18483,7 +18813,8 @@ function computeLegendDimensions(gd, groups, traces) {
+     var fullLayout = gd._fullLayout,
+         opts = fullLayout.legend,
+         borderwidth = opts.borderwidth,
+-        isGrouped = helpers.isGrouped(opts);
++        isGrouped = helpers.isGrouped(opts),
++        isHorizontalColumn = helpers.isHorizontalColumn(opts);
+ 
+     if(helpers.isVertical(opts)) {
+         if(isGrouped) {
+@@ -18590,7 +18921,7 @@ function computeLegendDimensions(gd, groups, traces) {
+         traces.each(function(d) {
+ 
+             var legendItem = d[0],
+-                traceWidth = maxTraceWidth,
++                traceWidth = isHorizontalColumn ? maxTraceWidth : 40 + d[0],
+                 traceGap = opts.tracegroupgap || 5;
+ 
+             if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
+@@ -18679,7 +19010,7 @@ function expandHorizontalMargin(gd) {
+     });
+ }
+ 
+-},{"../../lib":102,"../../plotly":120,"../../plots/plots":143,"../color":25,"../dragelement":46,"../drawing":48,"./anchor_utils":61,"./constants":63,"./get_legend_data":66,"./helpers":67,"./style":69,"d3":16}],66:[function(require,module,exports){
++},{"../../lib":102,"../../plotly":120,"../../plots/plots":143,"../color":25,"../dragelement":46,"../drawing":48,"./anchor_utils":61,"./constants":63,"./get_legend_data":66,"./helpers":67,"./style":69,"d3":14}],66:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -18816,6 +19147,9 @@ exports.isReversed = function isReversed(legendLayout) {
+     return (legendLayout.traceorder || '').indexOf('reversed') !== -1;
+ };
+ 
++exports.isHorizontalColumn = function isReversed(legendLayout) {
++    return legendLayout.horizontalspacing === 'column';
++};
+ },{"../../plots/plots":143}],68:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+@@ -19061,7 +19395,7 @@ function stylePies(d) {
+     if(pts.size()) pts.call(stylePie, d[0], trace);
+ }
+ 
+-},{"../../lib":102,"../../plots/plots":143,"../../traces/pie/style_one":234,"../../traces/scatter/subtypes":255,"../color":25,"../drawing":48,"d3":16}],70:[function(require,module,exports){
++},{"../../lib":102,"../../plots/plots":143,"../../traces/pie/style_one":234,"../../traces/scatter/subtypes":255,"../color":25,"../drawing":48,"d3":14}],70:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -19859,7 +20193,7 @@ function createModeBar(gd, buttons) {
+ 
+ module.exports = createModeBar;
+ 
+-},{"../../../build/ploticon":2,"../../lib":102,"d3":16}],72:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":102,"d3":14}],72:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -20613,7 +20947,7 @@ function reposition(gd, buttons, opts, axName) {
+     });
+ }
+ 
+-},{"../../lib/svg_text_utils":113,"../../plotly":120,"../../plots/cartesian/axis_ids":125,"../../plots/plots":143,"../color":25,"../drawing":48,"../legend/anchor_utils":61,"./constants":75,"./get_update_object":78,"d3":16}],78:[function(require,module,exports){
++},{"../../lib/svg_text_utils":113,"../../plotly":120,"../../plots/cartesian/axis_ids":125,"../../plots/plots":143,"../color":25,"../drawing":48,"../legend/anchor_utils":61,"./constants":75,"./get_update_object":78,"d3":14}],78:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -20671,7 +21005,7 @@ function getXRange(axisLayout, buttonLayout) {
+     return [range0, range1];
+ }
+ 
+-},{"d3":16}],79:[function(require,module,exports){
++},{"d3":14}],79:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -21360,7 +21694,7 @@ function makeScatter(trace, pointPairs, w, h) {
+     return [line, markers, fill];
+ }
+ 
+-},{"../../constants/xmlns_namespaces":94,"../../lib":102,"../drawing":48,"../drawing/symbol_defs":49,"./helpers":83,"d3":16}],86:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":94,"../../lib":102,"../drawing":48,"../drawing/symbol_defs":49,"./helpers":83,"d3":14}],86:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -22241,7 +22575,7 @@ function shapeBounds(ax, v0, v1, path, paramsToUse) {
+     if(max >= min) return [min, max];
+ }
+ 
+-},{"../../lib":102,"../../lib/setcursor":111,"../../plotly":120,"../../plots/cartesian/axes":123,"../color":25,"../dragelement":46,"../drawing":48,"./attributes":86,"fast-isnumeric":18}],88:[function(require,module,exports){
++},{"../../lib":102,"../../lib/setcursor":111,"../../plotly":120,"../../plots/cartesian/axes":123,"../color":25,"../dragelement":46,"../drawing":48,"./attributes":86,"fast-isnumeric":17}],88:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -22471,7 +22805,7 @@ Titles.draw = function(gd, titleClass, options) {
+     el.classed('js-placeholder', isplaceholder);
+ };
+ 
+-},{"../../lib":102,"../../lib/svg_text_utils":113,"../../plotly":120,"../../plots/plots":143,"../color":25,"../drawing":48,"d3":16,"fast-isnumeric":18}],89:[function(require,module,exports){
++},{"../../lib":102,"../../lib/svg_text_utils":113,"../../plotly":120,"../../plots/plots":143,"../color":25,"../drawing":48,"d3":14,"fast-isnumeric":17}],89:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -23219,7 +23553,7 @@ function clearPushMargins(gd) {
+     }
+ }
+ 
+-},{"../../lib":102,"../../lib/svg_text_utils":113,"../../plotly":120,"../../plots/plots":143,"../color":25,"../drawing":48,"../legend/anchor_utils":61,"./constants":90,"d3":16}],93:[function(require,module,exports){
++},{"../../lib":102,"../../lib/svg_text_utils":113,"../../plotly":120,"../../plots/plots":143,"../color":25,"../drawing":48,"../legend/anchor_utils":61,"./constants":90,"d3":14}],93:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -23312,7 +23646,7 @@ exports.Queue = Plotly.Queue;
+ // export d3 used in the bundle
+ exports.d3 = require('d3');
+ 
+-},{"../build/ploticon":2,"./plot_api/set_plot_config":117,"./plot_api/to_image":118,"./plot_api/validate":119,"./plotly":120,"./snapshot/download":158,"d3":16}],96:[function(require,module,exports){
++},{"../build/ploticon":2,"./plot_api/set_plot_config":117,"./plot_api/to_image":118,"./plot_api/validate":119,"./plotly":120,"./snapshot/download":158,"d3":14}],96:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -23655,7 +23989,7 @@ exports.validate = function(value, opts) {
+     return out !== failed;
+ };
+ 
+-},{"../components/colorscale/get_scale":37,"../components/colorscale/scales":43,"./nested_property":106,"fast-isnumeric":18,"tinycolor2":20}],98:[function(require,module,exports){
++},{"../components/colorscale/get_scale":37,"../components/colorscale/scales":43,"./nested_property":106,"fast-isnumeric":17,"tinycolor2":20}],98:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -23994,7 +24328,7 @@ exports.parseDate = function(v) {
+     return out;
+ };
+ 
+-},{"../lib":102,"d3":16,"fast-isnumeric":18}],99:[function(require,module,exports){
++},{"../lib":102,"d3":14,"fast-isnumeric":17}],99:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -24128,7 +24462,7 @@ var Events = {
+ 
+ module.exports = Events;
+ 
+-},{"events":14}],100:[function(require,module,exports){
++},{"events":16}],100:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -24886,7 +25220,7 @@ lib.numSeparate = function(value, separators) {
+     return x1 + x2;
+ };
+ 
+-},{"./coerce":97,"./dates":98,"./extend":100,"./is_plain_object":103,"./loggers":104,"./matrix":105,"./nested_property":106,"./notifier":107,"./search":110,"./stats":112,"d3":16}],103:[function(require,module,exports){
++},{"./coerce":97,"./dates":98,"./extend":100,"./is_plain_object":103,"./loggers":104,"./matrix":105,"./nested_property":106,"./notifier":107,"./search":110,"./stats":112,"d3":14}],103:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -25348,7 +25682,7 @@ function badContainer(container, propStr, propParts) {
+     };
+ }
+ 
+-},{"fast-isnumeric":18}],107:[function(require,module,exports){
++},{"fast-isnumeric":17}],107:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -25425,7 +25759,7 @@ module.exports = function(text, displayLength) {
+         });
+ };
+ 
+-},{"d3":16,"fast-isnumeric":18}],108:[function(require,module,exports){
++},{"d3":14,"fast-isnumeric":17}],108:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -25988,7 +26322,7 @@ exports.roundUp = function(val, arrayIn, reverse) {
+     return arrayIn[low];
+ };
+ 
+-},{"../lib":102,"fast-isnumeric":18}],111:[function(require,module,exports){
++},{"../lib":102,"fast-isnumeric":17}],111:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -26107,7 +26441,7 @@ exports.interp = function(arr, n) {
+     return frac * arr[Math.ceil(n)] + (1 - frac) * arr[Math.floor(n)];
+ };
+ 
+-},{"fast-isnumeric":18}],113:[function(require,module,exports){
++},{"fast-isnumeric":17}],113:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -26608,7 +26942,7 @@ util.makeEditable = function(context, _delegate, options) {
+     return d3.rebind(this, dispatch, 'on');
+ };
+ 
+-},{"../constants/xmlns_namespaces":94,"../lib":102,"../plotly":120,"d3":16}],114:[function(require,module,exports){
++},{"../constants/xmlns_namespaces":94,"../lib":102,"../plotly":120,"d3":14}],114:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -29723,7 +30057,7 @@ function drawMainTitle(gd) {
+     });
+ }
+ 
+-},{"../components/color":25,"../components/drawing":48,"../components/errorbars":54,"../components/images":60,"../components/legend":68,"../components/modebar/manage":72,"../components/rangeselector":79,"../components/rangeslider":84,"../components/shapes":87,"../components/titles":88,"../components/updatemenus":93,"../constants/xmlns_namespaces":94,"../lib":102,"../lib/events":99,"../lib/queue":109,"../plotly":120,"../plots/cartesian/graph_interact":130,"../plots/plots":143,"d3":16,"fast-isnumeric":18,"gl-mat4/fromQuat":19}],115:[function(require,module,exports){
++},{"../components/color":25,"../components/drawing":48,"../components/errorbars":54,"../components/images":60,"../components/legend":68,"../components/modebar/manage":72,"../components/rangeselector":79,"../components/rangeslider":84,"../components/shapes":87,"../components/titles":88,"../components/updatemenus":93,"../constants/xmlns_namespaces":94,"../lib":102,"../lib/events":99,"../lib/queue":109,"../plotly":120,"../plots/cartesian/graph_interact":130,"../plots/plots":143,"d3":14,"fast-isnumeric":17,"gl-mat4/fromQuat":18}],115:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -30311,7 +30645,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":102,"../plotly":120,"../snapshot":160,"fast-isnumeric":18}],119:[function(require,module,exports){
++},{"../lib":102,"../plotly":120,"../snapshot":160,"fast-isnumeric":17}],119:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -30799,7 +31133,7 @@ exports.PlotSchema = require('./plot_api/plot_schema');
+ // imaging routines
+ exports.Snapshot = require('./snapshot');
+ 
+-},{"../build/plotcss":1,"./components/annotations":23,"./components/color":25,"./components/colorbar":30,"./components/colorscale":39,"./components/drawing":48,"./components/errorbars":54,"./components/images":60,"./components/legend":68,"./components/modebar":71,"./components/shapes":87,"./components/updatemenus":93,"./fonts/mathjax_config":96,"./lib":102,"./lib/queue":109,"./lib/svg_text_utils":113,"./plot_api/plot_api":114,"./plot_api/plot_config":115,"./plot_api/plot_schema":116,"./plots/cartesian/axes":123,"./plots/cartesian/graph_interact":130,"./plots/plots":143,"./plots/polar/micropolar":146,"./snapshot":160,"./traces/scatter":246,"es6-promise":17}],121:[function(require,module,exports){
++},{"../build/plotcss":1,"./components/annotations":23,"./components/color":25,"./components/colorbar":30,"./components/colorscale":39,"./components/drawing":48,"./components/errorbars":54,"./components/images":60,"./components/legend":68,"./components/modebar":71,"./components/shapes":87,"./components/updatemenus":93,"./fonts/mathjax_config":96,"./lib":102,"./lib/queue":109,"./lib/svg_text_utils":113,"./plot_api/plot_api":114,"./plot_api/plot_config":115,"./plot_api/plot_schema":116,"./plots/cartesian/axes":123,"./plots/cartesian/graph_interact":130,"./plots/plots":143,"./plots/polar/micropolar":146,"./snapshot":160,"./traces/scatter":246,"es6-promise":15}],121:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -31082,14 +31416,27 @@ axes.getAutoRange = function(ax) {
+     }
+ 
+     if(minmin === maxmax) {
+-        newRange = axReverse ?
+-            [minmin + 1, ax.rangemode !== 'normal' ? 0 : minmin - 1] :
+-            [ax.rangemode !== 'normal' ? 0 : minmin - 1, minmin + 1];
++        var lower = minmin - 1;
++        var upper = minmin + 1;
++        if(ax.rangemode === 'tozero') {
++            newRange = minmin < 0 ? [lower, 0] : [0, upper];
++        }
++        else if(ax.rangemode === 'nonnegative') {
++            newRange = [Math.max(0, lower), Math.max(0, upper)];
++        }
++        else {
++            newRange = [lower, upper];
++        }
+     }
+     else if(mbest) {
+         if(ax.type === 'linear' || ax.type === '-') {
+-            if(ax.rangemode === 'tozero' && minbest.val >= 0) {
+-                minbest = {val: 0, pad: 0};
++            if(ax.rangemode === 'tozero') {
++                if(minbest.val >= 0) {
++                    minbest = {val: 0, pad: 0};
++                }
++                if(maxbest.val <= 0) {
++                    maxbest = {val: 0, pad: 0};
++                }
+             }
+             else if(ax.rangemode === 'nonnegative') {
+                 if(minbest.val - mbest * minbest.pad < 0) {
+@@ -31103,22 +31450,39 @@ axes.getAutoRange = function(ax) {
+             // in case it changed again...
+             mbest = (maxbest.val - minbest.val) /
+                 (ax._length - minbest.pad - maxbest.pad);
++
+         }
+ 
+         newRange = [
+             minbest.val - mbest * minbest.pad,
+             maxbest.val + mbest * maxbest.pad
+         ];
++    }
+ 
+-        // don't let axis have zero size
+-        if(newRange[0] === newRange[1]) {
++    // don't let axis have zero size, while still respecting tozero and nonnegative
++    if(newRange[0] === newRange[1]) {
++        if(ax.rangemode === 'tozero') {
++            if(newRange[0] < 0) {
++                newRange = [newRange[0], 0];
++            }
++            else if(newRange[0] > 0) {
++                newRange = [0, newRange[0]];
++            }
++            else {
++                newRange = [0, 1];
++            }
++        }
++        else {
+             newRange = [newRange[0] - 1, newRange[0] + 1];
++            if(ax.rangemode === 'nonnegative') {
++                newRange[0] = Math.max(0, newRange[0]);
++            }
+         }
++    }
+ 
+-        // maintain reversal
+-        if(axReverse) {
+-            newRange.reverse();
+-        }
++    // maintain reversal
++    if(axReverse) {
++        newRange.reverse();
+     }
+ 
+     return newRange;
+@@ -32901,7 +33265,7 @@ function swapAxisAttrs(layout, key, xFullAxes, yFullAxes) {
+ // rather than built-in % which gives a negative value for negative v
+ function mod(v, d) { return ((v % d) + d) % d; }
+ 
+-},{"../../components/color":25,"../../components/drawing":48,"../../components/titles":88,"../../lib":102,"../../lib/svg_text_utils":113,"../../plotly":120,"./axis_ids":125,"./layout_attributes":132,"./layout_defaults":133,"./set_convert":137,"d3":16,"fast-isnumeric":18}],124:[function(require,module,exports){
++},{"../../components/color":25,"../../components/drawing":48,"../../components/titles":88,"../../lib":102,"../../lib/svg_text_utils":113,"../../plotly":120,"./axis_ids":125,"./layout_attributes":132,"./layout_defaults":133,"./set_convert":137,"d3":14,"fast-isnumeric":17}],124:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -33184,7 +33548,7 @@ function category(a) {
+     return curvecats > curvenums * 2;
+ }
+ 
+-},{"../../components/color/attributes":24,"../../lib":102,"../plots":143,"./axis_ids":125,"./category_order_defaults":126,"./clean_datum":127,"./layout_attributes":132,"./ordered_categories":134,"./set_convert":137,"./tick_label_defaults":138,"./tick_mark_defaults":139,"./tick_value_defaults":140,"fast-isnumeric":18,"tinycolor2":20}],125:[function(require,module,exports){
++},{"../../components/color/attributes":24,"../../lib":102,"../plots":143,"./axis_ids":125,"./category_order_defaults":126,"./clean_datum":127,"./layout_attributes":132,"./ordered_categories":134,"./set_convert":137,"./tick_label_defaults":138,"./tick_mark_defaults":139,"./tick_value_defaults":140,"fast-isnumeric":17,"tinycolor2":20}],125:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -33378,7 +33742,7 @@ module.exports = function cleanDatum(c) {
+     return c;
+ };
+ 
+-},{"../../lib":102,"fast-isnumeric":18}],128:[function(require,module,exports){
++},{"../../lib":102,"fast-isnumeric":17}],128:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -34145,7 +34509,7 @@ function isSelectOrLasso(dragmode) {
+     return modes.indexOf(dragmode) !== -1;
+ }
+ 
+-},{"../../components/color":25,"../../components/dragelement":46,"../../components/drawing":48,"../../lib":102,"../../lib/setcursor":111,"../../lib/svg_text_utils":113,"../../plotly":120,"./axes":123,"./constants":128,"./select":136,"d3":16,"tinycolor2":20}],130:[function(require,module,exports){
++},{"../../components/color":25,"../../components/dragelement":46,"../../components/drawing":48,"../../lib":102,"../../lib/setcursor":111,"../../lib/svg_text_utils":113,"../../plotly":120,"./axes":123,"./constants":128,"./select":136,"d3":14,"tinycolor2":20}],130:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -35487,7 +35851,7 @@ fx.inbox = function(v0, v1) {
+     return Infinity;
+ };
+ 
+-},{"../../components/color":25,"../../components/dragelement":46,"../../components/drawing":48,"../../lib":102,"../../lib/events":99,"../../lib/svg_text_utils":113,"./axes":123,"./constants":128,"./dragbox":129,"d3":16,"fast-isnumeric":18,"tinycolor2":20}],131:[function(require,module,exports){
++},{"../../components/color":25,"../../components/dragelement":46,"../../components/drawing":48,"../../lib":102,"../../lib/events":99,"../../lib/svg_text_utils":113,"./axes":123,"./constants":128,"./dragbox":129,"d3":14,"fast-isnumeric":17,"tinycolor2":20}],131:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -36171,7 +36535,7 @@ module.exports = function orderedCategories(axisLetter, categoryorder, categorya
+     }
+ };
+ 
+-},{"d3":16}],135:[function(require,module,exports){
++},{"d3":14}],135:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -36236,7 +36600,7 @@ module.exports = function handlePositionDefaults(containerIn, containerOut, coer
+     return containerOut;
+ };
+ 
+-},{"../../lib":102,"fast-isnumeric":18}],136:[function(require,module,exports){
++},{"../../lib":102,"fast-isnumeric":17}],136:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -36680,7 +37044,7 @@ module.exports = function setConvert(ax) {
+     ax._forceTick0 = null;
+ };
+ 
+-},{"../../lib":102,"./axis_ids":125,"./clean_datum":127,"./constants":128,"d3":16,"fast-isnumeric":18}],138:[function(require,module,exports){
++},{"../../lib":102,"./axis_ids":125,"./clean_datum":127,"./constants":128,"d3":14,"fast-isnumeric":17}],138:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -36837,7 +37201,7 @@ module.exports = function handleTickValueDefaults(containerIn, containerOut, coe
+     }
+ };
+ 
+-},{"fast-isnumeric":18}],141:[function(require,module,exports){
++},{"fast-isnumeric":17}],141:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -38224,7 +38588,7 @@ plots.graphJson = function(gd, dataonly, mode, output, useDefaults) {
+     return (output === 'object') ? obj : JSON.stringify(obj);
+ };
+ 
+-},{"../components/color":25,"../lib":102,"../plotly":120,"./attributes":121,"./font_attributes":141,"./layout_attributes":142,"d3":16,"fast-isnumeric":18}],144:[function(require,module,exports){
++},{"../components/color":25,"../lib":102,"../plotly":120,"./attributes":121,"./font_attributes":141,"./layout_attributes":142,"d3":14,"fast-isnumeric":17}],144:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -39787,7 +40151,7 @@ var extendDeepAll = Plotly.Lib.extendDeepAll;
+     return exports;
+ };
+ 
+-},{"../../plotly":120,"./micropolar_manager":147,"d3":16}],147:[function(require,module,exports){
++},{"../../plotly":120,"./micropolar_manager":147,"d3":14}],147:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -39870,7 +40234,7 @@ manager.fillLayout = function(_gd) {
+     _gd._fullLayout = extendDeepAll(dflts, _gd.layout);
+ };
+ 
+-},{"../../plotly":120,"./undo_manager":148,"d3":16}],148:[function(require,module,exports){
++},{"../../plotly":120,"./undo_manager":148,"d3":14}],148:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -41058,7 +41422,7 @@ function removeZoombox(gd) {
+         .remove();
+ }
+ 
+-},{"../../components/color":25,"../../components/dragelement":46,"../../components/drawing":48,"../../components/titles":88,"../../lib":102,"../../lib/extend":100,"../../lib/filter_visible":101,"../../plotly":120,"../cartesian/axes":123,"../cartesian/constants":128,"../cartesian/graph_interact":130,"../cartesian/select":136,"../cartesian/set_convert":137,"d3":16,"tinycolor2":20}],157:[function(require,module,exports){
++},{"../../components/color":25,"../../components/dragelement":46,"../../components/drawing":48,"../../components/titles":88,"../../lib":102,"../../lib/extend":100,"../../lib/filter_visible":101,"../../plotly":120,"../cartesian/axes":123,"../cartesian/constants":128,"../cartesian/graph_interact":130,"../cartesian/select":136,"../cartesian/set_convert":137,"d3":14,"tinycolor2":20}],157:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -41524,7 +41888,7 @@ function svgToImg(opts) {
+ 
+ module.exports = svgToImg;
+ 
+-},{"../lib":102,"events":14}],162:[function(require,module,exports){
++},{"../lib":102,"events":16}],162:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -41603,7 +41967,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":102,"../plotly":120,"events":14}],163:[function(require,module,exports){
++},{"../lib":102,"../plotly":120,"events":16}],163:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -41715,7 +42079,7 @@ module.exports = function toSVG(gd, format) {
+     return s;
+ };
+ 
+-},{"../components/color":25,"../components/drawing":48,"../constants/xmlns_namespaces":94,"../lib/svg_text_utils":113,"d3":16}],164:[function(require,module,exports){
++},{"../components/color":25,"../components/drawing":48,"../constants/xmlns_namespaces":94,"../lib/svg_text_utils":113,"d3":14}],164:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -41876,7 +42240,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../components/colorscale/calc":32,"../../components/colorscale/has_colorscale":38,"../../plots/cartesian/axes":123,"fast-isnumeric":18}],167:[function(require,module,exports){
++},{"../../components/colorscale/calc":32,"../../components/colorscale/has_colorscale":38,"../../plots/cartesian/axes":123,"fast-isnumeric":17}],167:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -42259,7 +42623,7 @@ module.exports = function plot(gd, plotinfo, cdbar) {
+ 
+ };
+ 
+-},{"../../components/color":25,"../../components/errorbars":54,"../../lib":102,"./arrays_to_calcdata":164,"d3":16,"fast-isnumeric":18}],173:[function(require,module,exports){
++},{"../../components/color":25,"../../components/errorbars":54,"../../lib":102,"./arrays_to_calcdata":164,"d3":14,"fast-isnumeric":17}],173:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -42490,7 +42854,7 @@ module.exports = function setPositions(gd, plotinfo) {
+     });
+ };
+ 
+-},{"../../lib":102,"../../plots/cartesian/axes":123,"../../plots/plots":143,"fast-isnumeric":18}],174:[function(require,module,exports){
++},{"../../lib":102,"../../plots/cartesian/axes":123,"../../plots/plots":143,"fast-isnumeric":17}],174:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -42569,7 +42933,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/color":25,"../../components/drawing":48,"../../components/errorbars":54,"d3":16}],175:[function(require,module,exports){
++},{"../../components/color":25,"../../components/drawing":48,"../../components/errorbars":54,"d3":14}],175:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -42886,7 +43250,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":102,"../../plots/cartesian/axes":123,"fast-isnumeric":18}],178:[function(require,module,exports){
++},{"../../lib":102,"../../plots/cartesian/axes":123,"fast-isnumeric":17}],178:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43396,7 +43760,7 @@ module.exports = function plot(gd, plotinfo, cdbox) {
+     });
+ };
+ 
+-},{"../../components/drawing":48,"../../lib":102,"d3":16}],184:[function(require,module,exports){
++},{"../../components/drawing":48,"../../lib":102,"d3":14}],184:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43528,7 +43892,7 @@ module.exports = function style(gd) {
+         });
+ };
+ 
+-},{"../../components/color":25,"../../components/drawing":48,"d3":16}],186:[function(require,module,exports){
++},{"../../components/color":25,"../../components/drawing":48,"d3":14}],186:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43917,7 +44281,7 @@ module.exports = function makeColorMap(trace) {
+     return colorMap;
+ };
+ 
+-},{"../../components/colorscale/get_scale":37,"d3":16}],193:[function(require,module,exports){
++},{"../../components/colorscale/get_scale":37,"d3":14}],193:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44627,7 +44991,7 @@ function makeClipMask(cd0) {
+     return z;
+ }
+ 
+-},{"../../components/drawing":48,"../../lib":102,"../heatmap/plot":205,"d3":16}],194:[function(require,module,exports){
++},{"../../components/drawing":48,"../../lib":102,"../heatmap/plot":205,"d3":14}],194:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44684,7 +45048,7 @@ module.exports = function style(gd) {
+     heatmapStyle(gd);
+ };
+ 
+-},{"../../components/drawing":48,"../heatmap/style":206,"./make_color_map":192,"d3":16}],195:[function(require,module,exports){
++},{"../../components/drawing":48,"../heatmap/style":206,"./make_color_map":192,"d3":14}],195:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45238,7 +45602,7 @@ function iterateInterp2d(z, emptyPoints, overshoot) {
+     return maxFractionalChange;
+ }
+ 
+-},{"../../components/colorscale/calc":32,"../../lib":102,"../../plots/cartesian/axes":123,"../../plots/plots":143,"../histogram2d/calc":217,"./convert_column_xyz":199,"./has_columns":201,"./max_row_length":204,"fast-isnumeric":18}],198:[function(require,module,exports){
++},{"../../components/colorscale/calc":32,"../../lib":102,"../../plots/cartesian/axes":123,"../../plots/plots":143,"../histogram2d/calc":217,"./convert_column_xyz":199,"./has_columns":201,"./max_row_length":204,"fast-isnumeric":17}],198:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45284,7 +45648,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(trace.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":28,"../../components/colorscale/get_scale":37,"../../lib":102,"../../plots/plots":143,"d3":16,"fast-isnumeric":18}],199:[function(require,module,exports){
++},{"../../components/colorbar/draw":28,"../../components/colorscale/get_scale":37,"../../lib":102,"../../plots/plots":143,"d3":14,"fast-isnumeric":17}],199:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45966,7 +46330,7 @@ function plotOne(gd, plotinfo, cd) {
+     image3.exit().remove();
+ }
+ 
+-},{"../../components/colorscale/get_scale":37,"../../constants/xmlns_namespaces":94,"../../lib":102,"../../plots/plots":143,"./max_row_length":204,"d3":16,"tinycolor2":20}],206:[function(require,module,exports){
++},{"../../components/colorscale/get_scale":37,"../../constants/xmlns_namespaces":94,"../../lib":102,"../../plots/plots":143,"./max_row_length":204,"d3":14,"tinycolor2":20}],206:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45987,7 +46351,7 @@ module.exports = function style(gd) {
+         });
+ };
+ 
+-},{"d3":16}],207:[function(require,module,exports){
++},{"d3":14}],207:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46076,7 +46440,7 @@ function isValidZ(z) {
+     return (allRowsAreArrays && oneRowIsFilled && hasOneNumber);
+ }
+ 
+-},{"./has_columns":201,"fast-isnumeric":18}],208:[function(require,module,exports){
++},{"./has_columns":201,"fast-isnumeric":17}],208:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46314,7 +46678,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"fast-isnumeric":18}],212:[function(require,module,exports){
++},{"fast-isnumeric":17}],212:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46444,7 +46808,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":102,"../../plots/cartesian/axes":123,"./average":209,"./bin_functions":211,"./norm_functions":215,"fast-isnumeric":18}],213:[function(require,module,exports){
++},{"../../lib":102,"../../plots/cartesian/axes":123,"./average":209,"./bin_functions":211,"./norm_functions":215,"fast-isnumeric":17}],213:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47432,7 +47796,7 @@ function nextDefaultColor(index) {
+     return pieDefaultColors[index % pieDefaultColors.length];
+ }
+ 
+-},{"../../components/color":25,"./helpers":228,"fast-isnumeric":18,"tinycolor2":20}],227:[function(require,module,exports){
++},{"../../components/color":25,"./helpers":228,"fast-isnumeric":17,"tinycolor2":20}],227:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48314,7 +48678,7 @@ function maxExtent(tilt, tiltAxisFraction, depth) {
+         2 * Math.sqrt(1 - sinTilt * sinTilt * tiltAxisFraction * tiltAxisFraction));
+ }
+ 
+-},{"../../components/color":25,"../../components/drawing":48,"../../lib/svg_text_utils":113,"../../plots/cartesian/graph_interact":130,"./helpers":228,"d3":16}],233:[function(require,module,exports){
++},{"../../components/color":25,"../../components/drawing":48,"../../lib/svg_text_utils":113,"../../plots/cartesian/graph_interact":130,"./helpers":228,"d3":14}],233:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48343,7 +48707,7 @@ module.exports = function style(gd) {
+     });
+ };
+ 
+-},{"./style_one":234,"d3":16}],234:[function(require,module,exports){
++},{"./style_one":234,"d3":14}],234:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48785,7 +49149,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":102,"../../plots/cartesian/axes":123,"./colorscale_calc":240,"./subtypes":255,"fast-isnumeric":18}],238:[function(require,module,exports){
++},{"../../lib":102,"../../plots/cartesian/axes":123,"./colorscale_calc":240,"./subtypes":255,"fast-isnumeric":17}],238:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48879,7 +49243,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(marker.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":28,"../../components/colorscale/get_scale":37,"../../lib":102,"../../plots/plots":143,"d3":16,"fast-isnumeric":18}],240:[function(require,module,exports){
++},{"../../components/colorbar/draw":28,"../../components/colorscale/get_scale":37,"../../lib":102,"../../plots/plots":143,"d3":14,"fast-isnumeric":17}],240:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49573,7 +49937,7 @@ module.exports = function makeBubbleSizeFn(trace) {
+     };
+ };
+ 
+-},{"fast-isnumeric":18}],251:[function(require,module,exports){
++},{"fast-isnumeric":17}],251:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49926,7 +50290,7 @@ function selectMarkers(gd, plotinfo, cdscatter) {
+     });
+ }
+ 
+-},{"../../components/drawing":48,"../../components/errorbars":54,"../../lib":102,"../../lib/polygon":108,"./arrays_to_calcdata":235,"./line_points":248,"./subtypes":255,"d3":16}],253:[function(require,module,exports){
++},{"../../components/drawing":48,"../../components/errorbars":54,"../../lib":102,"../../lib/polygon":108,"./arrays_to_calcdata":235,"./line_points":248,"./subtypes":255,"d3":14}],253:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50039,7 +50403,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/drawing":48,"../../components/errorbars":54,"d3":16}],255:[function(require,module,exports){
++},{"../../components/drawing":48,"../../components/errorbars":54,"d3":14}],255:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50326,7 +50690,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":102,"../../plots/cartesian/axes":123,"../scatter/colorscale_calc":240,"../scatter/subtypes":255,"fast-isnumeric":18}],260:[function(require,module,exports){
++},{"../../lib":102,"../../plots/cartesian/axes":123,"../scatter/colorscale_calc":240,"../scatter/subtypes":255,"fast-isnumeric":17}],260:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+diff --git a/dist/plotly-cartesian.min.js b/dist/plotly-cartesian.min.js
+index f76d38d..159a80b 100644
+--- a/dist/plotly-cartesian.min.js
++++ b/dist/plotly-cartesian.min.js
+@@ -4,23 +4,23 @@
+ * All rights reserved.
+ * Licensed under the MIT license
+ */
+-!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var e;e="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,e.Plotly=t()}}(function(){var t;return function e(t,n,r){function a(i,l){if(!n[i]){if(!t[i]){var s="function"==typeof require&&require;if(!l&&s)return s(i,!0);if(o)return o(i,!0);var c=new Error("Cannot find module '"+i+"'");throw c.code="MODULE_NOT_FOUND",c}var u=n[i]={exports:{}};t[i][0].call(u.exports,function(e){var n=t[i][1][e];return a(n?n:e)},u,u.exports,e,t,n,r)}return n[i].exports}for(var o="function"==typeof require&&require,i=0;i<r.length;i++)a(r[i]);return a}({1:[function(t,e,n){"use strict";var r=t("../src/plotly"),a={"X,X div":"font-family:'Open Sans', verdana, arial, sans-serif;margin:0;padding:0;","X input,X button":"font-family:'Open Sans', verdana, arial, sans-serif;","X input:focus,X 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o=t.framework.svg(),i=1,l=t._fullLayout.title;""!==l&&l||(i=0);var s="Click to enter title",c=function(){this.call(P.util.convertToTspans)},u=o.select(".title-group text").call(c);if(t._context.editable){u.attr({"data-unformatted":l}),l&&l!==s||(i=.2,u.attr({"data-unformatted":s}).text(s).style({opacity:i}).on("mouseover.opacity",function(){C.select(this).transition().duration(100).style("opacity",1)}).on("mouseout.opacity",function(){C.select(this).transition().duration(1e3).style("opacity",0)}));var f=function(){this.call(P.util.makeEditable).on("edit",function(e){t.framework({layout:{title:e}}),this.attr({"data-unformatted":e}).text(e).call(c),this.call(f)}).on("cancel",function(){var t=this.attr("data-unformatted");this.text(t).call(c)})};u.call(f)}return t._context.setBackground(t,t._fullLayout.paper_bgcolor),R.addLinks(t),Promise.resolve()}function s(t){var e,n;t||(t={}),t.xaxis1&&(t.xaxis||(t.xaxis=t.xaxis1),delete t.xaxis1),t.yaxis1&&(t.yaxis||(t.yaxis=t.yaxis1),delete t.yaxis1);var r=P.Axes.list({_fullLayout:t});for(e=0;e<r.length;e++){var a=r[e];a.anchor&&"free"!==a.anchor&&(a.anchor=P.Axes.cleanId(a.anchor)),a.overlaying&&(a.overlaying=P.Axes.cleanId(a.overlaying)),a.type||(a.isdate?a.type="date":a.islog?a.type="log":a.isdate===!1&&a.islog===!1&&(a.type="linear")),"withzero"!==a.autorange&&"tozero"!==a.autorange||(a.autorange=!0,a.rangemode="tozero"),delete a.islog,delete a.isdate,delete a.categories,d(a,"domain")&&delete a.domain,void 0!==a.autotick&&(void 0===a.tickmode&&(a.tickmode=a.autotick?"auto":"linear"),delete a.autotick)}void 0===t.annotations||Array.isArray(t.annotations)||(N.warn("Annotations must be an array."),delete t.annotations);var o=(t.annotations||[]).length;for(e=0;o>e;e++){var i=t.annotations[e];i.ref&&("paper"===i.ref?(i.xref="paper",i.yref="paper"):"data"===i.ref&&(i.xref="x",i.yref="y"),delete i.ref),c(i,"xref"),c(i,"yref")}void 0===t.shapes||Array.isArray(t.shapes)||(N.warn("Shapes must be an array."),
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i)||-1!==n.indexOf(i.uid)){var l;for(o=0;100>o&&(l=N.randstr(r),-1!==n.indexOf(l));o++);i.uid=N.randstr(r),r.push(i.uid)}if(n.push(i.uid),"histogramy"===i.type&&"xbins"in i&&!("ybins"in i)&&(i.ybins=i.xbins,delete i.xbins),i.error_y&&"opacity"in i.error_y){var s=F.defaults,c=i.error_y.color||(R.traceIs(i,"bar")?F.defaultLine:s[a%s.length]);i.error_y.color=F.addOpacity(F.rgb(c),F.opacity(c)*i.error_y.opacity),delete i.error_y.opacity}if("bardir"in i&&("h"!==i.bardir||!R.traceIs(i,"bar")&&"histogram"!==i.type.substr(0,9)||(i.orientation="h",_(i)),delete i.bardir),"histogramy"===i.type&&_(i),"histogramx"!==i.type&&"histogramy"!==i.type||(i.type="histogram"),"scl"in i&&(i.colorscale=i.scl,delete i.scl),"reversescl"in i&&(i.reversescale=i.reversescl,delete 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a,o,i,l,s,c=N.isPlainObject(r),u=[];Array.isArray(n)||(n=[n]),n=p(n,t.data.length-1);for(var f in e)for(var d=0;d<n.length;d++){if(a=t.data[n[d]],i=N.nestedProperty(a,f),o=i.get(),l=e[f][d],!Array.isArray(l))throw new Error("attribute: "+f+" index: "+d+" must be an array");if(!Array.isArray(o))throw new Error("cannot extend missing or non-array attribute: "+f);s=c?r[f][d]:r,O(s)||(s=-1),u.push({prop:i,target:o,insert:l,maxp:Math.floor(s)})}return u}function b(t,e,n,r,a,o){y(t,e,n,r);for(var i,l,s,c=x(t,e,n,r),u=[],f={},d={},h=0;h<c.length;h++)l=c[h].prop,s=c[h].maxp,i=a(c[h].target,c[h].insert),s>=0&&s<i.length&&(u=o(i,s)),s=c[h].target.length,l.set(i),Array.isArray(f[l.astr])||(f[l.astr]=[]),Array.isArray(d[l.astr])||(d[l.astr]=[]),f[l.astr].push(u),d[l.astr].push(s);return{update:f,maxPoints:d}}function _(t){var e;if(N.swapAttrs(t,["?","?0","d?","?bins","nbins?","autobin?","?src","error_?"]),Array.isArray(t.z)&&Array.isArray(t.z[0])&&(t.transpose?delete t.transpose:t.transpose=!0),t.error_x&&t.error_y){var n=t.error_y,r="copy_ystyle"in n?n.copy_ystyle:!(n.color||n.thickness||n.width);N.swapAttrs(t,["error_?.copy_ystyle"]),r&&N.swapAttrs(t,["error_?.color","error_?.thickness","error_?.width"])}if(t.hoverinfo){var a=t.hoverinfo.split("+");for(e=0;e<a.length;e++)"x"===a[e]?a[e]="y":"y"===a[e]&&(a[e]="x");t.hoverinfo=a.join("+")}}function w(t){var e,n={left:0,right:0,bottom:0,top:0};if(t)for(e in t)t.hasOwnProperty(e)&&(n.left+=t[e].left||0,n.right+=t[e].right||0,n.bottom+=t[e].bottom||0,n.top+=t[e].top||0);return n}function k(t,e){var n,r,a,o=t._fullLayout,i=t._context;if(t.emit("plotly_autosize"),t._context.fillFrame)a=window.innerWidth,r=window.innerHeight,document.body.style.overflow="hidden";else if(O(i.frameMargins)&&i.frameMargins>0){var l=w(t._boundingBoxMargins),s=l.left+l.right,c=l.bottom+l.top,u=o._container.node().getBoundingClientRect(),f=1-2*i.frameMargins;a=Math.round(f*(u.width-s)),r=Math.round(f*(u.height-c))}else n=window.getComputedStyle(t),r=parseFloat(n.height)||o.height,a=parseFloat(n.width)||o.width;return Math.abs(o.width-a)>1||Math.abs(o.height-r)>1?(o.height=t.layout.height=r,o.width=t.layout.width=a):"initial"!==o.autosize&&(delete e.autosize,o.autosize=t.layout.autosize=!0),R.sanitizeMargins(o),e}function M(t){var e=C.select(t),n=t._fullLayout;if(n._container=e.selectAll(".plot-container").data([0]),n._container.enter().insert("div",":first-child").classed("plot-container",!0).classed("plotly",!0),n._paperdiv=n._container.selectAll(".svg-container").data([0]),n._paperdiv.enter().append("div").classed("svg-container",!0).style("position","relative"),"initial"===n.autosize&&(k(t,{}),n.autosize=!0,t.layout.autosize=!0),n._glcontainer=n._paperdiv.selectAll(".gl-container").data([0]),n._glcontainer.enter().append("div").classed("gl-container",!0),n._geocontainer=n._paperdiv.selectAll(".geo-container").data([0]),n._geocontainer.enter().append("div").classed("geo-container",!0),n._paperdiv.selectAll(".main-svg").remove(),n._paper=n._paperdiv.insert("svg",":first-child").classed("main-svg",!0),n._toppaper=n._paperdiv.append("svg").classed("main-svg",!0),!n._uid){var 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l=n._paper.append("g").classed("layer-above",!0);n._imageUpperLayer=l.append("g").classed("imagelayer",!0),n._shapeUpperLayer=l.append("g").classed("shapelayer",!0),n._pielayer=n._paper.append("g").classed("pielayer",!0),n._glimages=n._paper.append("g").classed("glimages",!0),n._geoimages=n._paper.append("g").classed("geoimages",!0),n._infolayer=n._toppaper.append("g").classed("infolayer",!0),n._zoomlayer=n._toppaper.append("g").classed("zoomlayer",!0),n._hoverlayer=n._toppaper.append("g").classed("hoverlayer",!0),t.emit("plotly_framework");var s=N.syncOrAsync([L,function(){return P.Axes.doTicks(t,"redraw")},j.init],t);return s&&s.then&&t._promises.push(s),s}function A(t,e){function n(e,n){return function(){return P.Axes.getFromId(t,e,n)}}for(var r,a,o=t._fullLayout._plots={},i=0;i<e.length;i++)r=e[i],a=o[r]={},a.id=r,a.x=n(r,"x"),a.y=n(r,"y"),a.xaxis=a.x(),a.yaxis=a.y()}function T(t,e){function 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h=l.append("g").classed("layer-subplot",!0);i.shapelayer=h.append("g").classed("shapelayer",!0),i.imagelayer=h.append("g").classed("imagelayer",!0),i.gridlayer=l.append("g"),i.overgrid=l.append("g"),i.zerolinelayer=l.append("g"),i.overzero=l.append("g"),i.plot=l.append("g").call(n),i.overplot=l.append("g"),i.xlines=l.append("path"),i.ylines=l.append("path"),i.overlines=l.append("g"),i.xaxislayer=l.append("g"),i.yaxislayer=l.append("g"),i.overaxes=l.append("g")}i.draglayer=r._draggers.append("g")}),a.forEach(function(t){var e=r._plots[t.mainplot];e.overlays.push(t),t.gridlayer=e.overgrid.append("g"),t.zerolinelayer=e.overzero.append("g"),t.plot=e.overplot.append("g").call(n),t.xlines=e.overlines.append("path"),t.ylines=e.overlines.append("path"),t.xaxislayer=e.overaxes.append("g"),t.yaxislayer=e.overaxes.append("g")}),e.forEach(function(t){var e=r._plots[t];e.xlines.style("fill","none").classed("crisp",!0),e.ylines.style("fill","none").classed("crisp",!0)})}function L(t){return N.syncOrAsync([R.doAutoMargin,z],t)}function z(t){var e,n=t._fullLayout,r=n._size,a=P.Axes.list(t);for(e=0;e<a.length;e++)a[e]._linepositions={};n._paperdiv.style({width:n.width+"px",height:n.height+"px"}).selectAll(".main-svg").call(q.setSize,n.width,n.height),t._context.setBackground(t,n.paper_bgcolor);var o=[];return n._paper.selectAll("g.subplot").each(function(e){var a=n._plots[e],i=P.Axes.getFromId(t,e,"x"),l=P.Axes.getFromId(t,e,"y");i.setScale(),l.setScale(),a.bg&&a.bg.call(q.setRect,i._offset-r.p,l._offset-r.p,i._length+2*r.p,l._length+2*r.p).call(F.fill,n.plot_bgcolor),a.clipId="clip"+n._uid+e+"plot";var s=n._defs.selectAll("g.clips").selectAll("#"+a.clipId).data([0]);s.enter().append("clipPath").attr({"class":"plotclip",id:a.clipId}).append("rect"),s.selectAll("rect").attr({width:i._length,height:l._length}),a.plot.call(N.setTranslate,i._offset,l._offset),a.plot.call(q.setClipUrl,a.clipId);var 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e%(f.minorTicks+1)==0}).classed("minor",function(t,e){return!(e%(f.minorTicks+1)==0)}).style(q),J.selectAll(".minor").style({stroke:f.minorTickColor}),W.select("line.grid-line").attr({x1:f.tickLength?x-f.tickLength:0,x2:x}).style({display:f.angularAxis.gridLinesVisible?"block":"none"}),J.append("text").classed("axis-text",!0).style(B);var K=W.select("text.axis-text").attr({x:x+f.labelOffset,dy:".35em",transform:function(t,e){var n=s(t,e),r=x+f.labelOffset,a=f.angularAxis.tickOrientation;return"horizontal"==a?"rotate("+-n+" "+r+" 0)":"radial"==a?270>n&&n>90?"rotate(180 "+r+" 0)":null:"rotate("+(180>=n&&n>0?-90:90)+" "+r+" 0)"}}).style({"text-anchor":"middle",display:f.angularAxis.labelsVisible?"block":"none"}).text(function(t,e){return e%(f.minorTicks+1)!=0?"":k?k[t]+f.angularAxis.ticksSuffix:t+f.angularAxis.ticksSuffix}).style(B);f.angularAxis.rewriteTicks&&K.text(function(t,e){return e%(f.minorTicks+1)!=0?"":f.angularAxis.rewriteTicks(this.textContent,e)});var tt=a.max(F.selectAll(".angular-tick text")[0].map(function(t,e){return t.getCTM().e+t.getBBox().width}));j.attr({transform:"translate("+[x+tt,f.margin.top]+")"});var et=e.select("g.geometry-group").selectAll("g").size()>0,nt=e.select("g.geometry-group").selectAll("g.geometry").data(h);if(nt.enter().append("g").attr({"class":function(t,e){return"geometry geometry"+e}}),nt.exit().remove(),h[0]||et){var rt=[];h.forEach(function(t,e){var n={};n.radialScale=r,n.angularScale=l,n.container=nt.filter(function(t,n){return n==e}),n.geometry=t.geometry,n.orientation=f.orientation,n.direction=f.direction,n.index=e,rt.push({data:t,geometryConfig:n})});var at=a.nest().key(function(t,e){return"undefined"!=typeof t.data.groupId||"unstacked"}).entries(rt),ot=[];at.forEach(function(t,e){"unstacked"===t.key?ot=ot.concat(t.values.map(function(t,e){return[t]})):ot.push(t.values)}),ot.forEach(function(t,e){var n;n=Array.isArray(t)?t[0].geometryConfig.geometry:t.geometryConfig.geometry;var 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t={geometryConfig:{geometryType:"arc"}};return t},o.DotPlot=function(){return o.PolyChart()},o.DotPlot.defaultConfig=function(){var t={geometryConfig:{geometryType:"dot",dotType:"circle"}};return t},o.LinePlot=function(){return o.PolyChart()},o.LinePlot.defaultConfig=function(){var t={geometryConfig:{geometryType:"line"}};return t},o.Legend=function(){function t(){var n=e.legendConfig,r=e.data.map(function(t,e){return[].concat(t).map(function(t,r){var a=i({},n.elements[e]);return a.name=t,a.color=[].concat(n.elements[e].color)[r],a})}),o=a.merge(r);o=o.filter(function(t,e){return n.elements[e]&&(n.elements[e].visibleInLegend||"undefined"==typeof n.elements[e].visibleInLegend)}),n.reverseOrder&&(o=o.reverse());var l=n.container;("string"==typeof l||l.nodeName)&&(l=a.select(l));var s=o.map(function(t,e){return t.color}),c=n.fontSize,u=null==n.isContinuous?"number"==typeof 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r=t("../../cartesian/layout_attributes"),a=t("../../../lib/extend").extendFlat;e.exports={title:r.title,titlefont:r.titlefont,color:r.color,tickmode:r.tickmode,nticks:a({},r.nticks,{dflt:6,min:1}),tick0:r.tick0,dtick:r.dtick,tickvals:r.tickvals,ticktext:r.ticktext,ticks:r.ticks,ticklen:r.ticklen,tickwidth:r.tickwidth,tickcolor:r.tickcolor,showticklabels:r.showticklabels,showtickprefix:r.showtickprefix,tickprefix:r.tickprefix,showticksuffix:r.showticksuffix,ticksuffix:r.ticksuffix,showexponent:r.showexponent,exponentformat:r.exponentformat,tickfont:r.tickfont,tickangle:r.tickangle,tickformat:r.tickformat,hoverformat:r.hoverformat,showline:a({},r.showline,{dflt:!0}),linecolor:r.linecolor,linewidth:r.linewidth,showgrid:a({},r.showgrid,{dflt:!0}),gridcolor:r.gridcolor,gridwidth:r.gridwidth,min:{valType:"number",dflt:0,min:0}}},{"../../../lib/extend":100,"../../cartesian/layout_attributes":132}],153:[function(t,e,n){"use strict";var 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a=t("../../../components/color"),o=t("../../subplot_defaults"),i=t("./layout_attributes"),l=t("./axis_defaults"),s=["aaxis","baxis","caxis"];e.exports=function(t,e,n){o(t,e,n,{type:"ternary",attributes:i,handleDefaults:r,font:e.font,paper_bgcolor:e.paper_bgcolor})}},{"../../../components/color":25,"../../subplot_defaults":149,"./axis_defaults":153,"./layout_attributes":155}],155:[function(t,e,n){"use strict";var r=t("../../../components/color/attributes"),a=t("./axis_attributes");e.exports={domain:{x:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]},y:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]}},bgcolor:{valType:"color",dflt:r.background},sum:{valType:"number",dflt:1,min:0},aaxis:a,baxis:a,caxis:a}},{"../../../components/color/attributes":24,"./axis_attributes":152}],156:[function(t,e,n){"use strict";function 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u=t[n];l[u.type]=l[u.type]||[],l[u.type].push(u)}var f=Object.keys(i),d=Object.keys(l);for(n=0;n<f.length;n++){var h=f[n];if(-1===d.indexOf(h)){var g=i[h][0];g.visible=!1,l[h]=[g]}}for(d=Object.keys(l),n=0;n<d.length;n++){var m=l[d[n]],v=m[0]._module;v.plot(r,p(m),a)}r.traceHash=l,r.layers.plotbg.select("path").call(c.fill,a.bgcolor)},b.makeFramework=function(){var t=this,e=t.defs.selectAll("g.clips").data([0]);e.enter().append("g").classed("clips",!0);var n="clip"+t.layoutId+t.id;t.clipDef=e.selectAll("#"+n).data([0]),t.clipDef.enter().append("clipPath").attr("id",n).append("path").attr("d","M0,0Z"),t.plotContainer=t.container.selectAll("g."+t.id).data([0]),t.plotContainer.enter().append("g").classed(t.id,!0),t.layers={};var r=["draglayer","plotbg","backplot","grids","frontplot","zoom","aaxis","baxis","caxis","axlines"],a=t.plotContainer.selectAll("g.toplevel").data(r);a.enter().append("g").attr("class",function(t){return"toplevel "+t}).each(function(e){var n=o.select(this);t.layers[e]=n,"frontplot"===e?n.append("g").classed("scatterlayer",!0):"backplot"===e?n.append("g").classed("maplayer",!0):"plotbg"===e?n.append("path").attr("d","M0,0Z"):"axlines"===e&&n.selectAll("path").data(["aline","bline","cline"]).enter().append("path").each(function(t){o.select(this).classed(t,!0)})});var i=t.plotContainer.select(".grids").selectAll("g.grid").data(["agrid","bgrid","cgrid"]);i.enter().append("g").attr("class",function(t){return"grid "+t}).each(function(e){t.layers[e]=o.select(this)}),t.plotContainer.selectAll(".backplot,.frontplot,.grids").call(u.setClipUrl,n),t.graphDiv._context.staticPlot||t.initInteractions()};var _=Math.sqrt(4/3);b.adjustLayout=function(t,e){var 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r={};r.attributes=t("./attributes"),r.supplyDefaults=t("./defaults"),r.supplyLayoutDefaults=t("./layout_defaults"),r.layoutAttributes=t("./layout_attributes"),r.calc=t("./calc"),r.plot=t("./plot"),r.style=t("./style"),r.styleOne=t("./style_one"),r.moduleType="trace",r.name="pie",r.basePlotModule=t("./base_plot"),r.categories=["pie","showLegend"],r.meta={},e.exports=r},{"./attributes":224,"./base_plot":225,"./calc":226,"./defaults":227,"./layout_attributes":230,"./layout_defaults":231,"./plot":232,"./style":233,"./style_one":234}],230:[function(t,e,n){"use strict";e.exports={hiddenlabels:{valType:"data_array"}}},{}],231:[function(t,e,n){"use strict";var r=t("../../lib"),a=t("./layout_attributes");e.exports=function(t,e){function n(n,o){return r.coerce(t,e,a,n,o)}n("hiddenlabels")}},{"../../lib":102,"./layout_attributes":230}],232:[function(t,e,n){"use strict";function r(t,e,n){var 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P=Array.isArray(m.textposition)?m.textposition[i.i]:m.textposition,N=A.selectAll("g.slicetext").data(i.text&&"none"!==P?[0]:[]);N.enter().append("g").classed("slicetext",!0),N.exit().remove(),N.each(function(){var t=u.select(this).selectAll("text").data([0]);t.enter().append("text").attr("data-notex",1),t.exit().remove(),t.text(i.text).attr({"class":"slicetext",transform:"","data-bb":"","text-anchor":"middle",x:0,y:0}).call(h.font,"outside"===P?m.outsidetextfont:m.insidetextfont).call(p.convertToTspans),t.selectAll("tspan.line").attr({x:0,y:0});var e,n=h.bBox(t.node());"outside"===P?e=o(n,i):(e=r(n,i,c),"auto"===P&&e.scale<1&&(t.call(h.font,m.outsidetextfont),m.outsidetextfont.family===m.insidetextfont.family&&m.outsidetextfont.size===m.insidetextfont.size||(t.attr({"data-bb":""}),n=h.bBox(t.node())),e=o(n,i)));var 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e&&f.style({"pointer-events":"none"}),n.immediate?r():d.on("click",r),u.rebind(this,l,"on")}},{"../constants/xmlns_namespaces":94,"../lib":102,"../plotly":120,d3:14}],114:[function(t,e,n){"use strict";function r(t){var e;if("string"==typeof t){if(e=document.getElementById(t),null===e)throw new Error("No DOM element with id '"+t+"' exists on the page.");return e}if(null===t||void 0===t)throw new Error("DOM element provided is null or undefined");return t}function a(t){Array.isArray(t._promises)&&t._promises.length>0&&N.log("Clearing previous rejected promises from queue."),t._promises=[]}function o(t,e){t._fullLayout._paperdiv.style("background","white"),P.defaultConfig.setBackground(t,e)}function i(t,e){t._context||(t._context=N.extendFlat({},P.defaultConfig));var n=t._context;e&&(Object.keys(e).forEach(function(t){t in 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o=t.framework.svg(),i=1,l=t._fullLayout.title;""!==l&&l||(i=0);var s="Click to enter title",c=function(){this.call(P.util.convertToTspans)},u=o.select(".title-group text").call(c);if(t._context.editable){u.attr({"data-unformatted":l
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a,o,i,l,s,c=N.isPlainObject(r),u=[];Array.isArray(n)||(n=[n]),n=p(n,t.data.length-1);for(var f in e)for(var d=0;d<n.length;d++){if(a=t.data[n[d]],i=N.nestedProperty(a,f),o=i.get(),l=e[f][d],!Array.isArray(l))throw new Error("attribute: "+f+" index: "+d+" must be an array");if(!Array.isArray(o))throw new Error("cannot extend missing or non-array attribute: "+f);s=c?r[f][d]:r,O(s)||(s=-1),u.push({prop:i,target:o,insert:l,maxp:Math.floor(s)})}return u}function b(t,e,n,r,a,o){y(t,e,n,r);for(var i,l,s,c=x(t,e,n,r),u=[],f={},d={},h=0;h<c.length;h++)l=c[h].prop,s=c[h].maxp,i=a(c[h].target,c[h].insert),s>=0&&s<i.length&&(u=o(i,s)),s=c[h].target.length,l.set(i),Array.isArray(f[l.astr])||(f[l.astr]=[]),Array.isArray(d[l.astr])||(d[l.astr]=[]),f[l.astr].push(u),d[l.astr].push(s);return{update:f,maxPoints:d}}function _(t){var e;if(N.swapAttrs(t,["?","?0","d?","?bins","nbins?","autobin?","?src","error_?"]),Array.isArray(t.z)&&Array.isArray(t.z[0])&&(t.transpose?delete t.transpose:t.transpose=!0),t.error_x&&t.error_y){var n=t.error_y,r="copy_ystyle"in n?n.copy_ystyle:!(n.color||n.thickness||n.width);N.swapAttrs(t,["error_?.copy_ystyle"]),r&&N.swapAttrs(t,["error_?.color","error_?.thickness","error_?.width"])}if(t.hoverinfo){var a=t.hoverinfo.split("+");for(e=0;e<a.length;e++)"x"===a[e]?a[e]="y":"y"===a[e]&&(a[e]="x");t.hoverinfo=a.join("+")}}function w(t){var e,n={left:0,right:0,bottom:0,top:0};if(t)for(e in t)t.hasOwnProperty(e)&&(n.left+=t[e].left||0,n.right+=t[e].right||0,n.bottom+=t[e].bottom||0,n.top+=t[e].top||0);return n}function k(t,e){var n,r,a,o=t._fullLayout,i=t._context;if(t.emit("plotly_autosize"),t._context.fillFrame)a=window.innerWidth,r=window.innerHeight,document.body.style.overflow="hidden";else if(O(i.frameMargins)&&i.frameMargins>0){var l=w(t._boundingBoxMargins),s=l.left+l.right,c=l.bottom+l.top,u=o._container.node().getBoundingClientRect(),f=1-2*i.frameMargins;a=Math.round(f*(u.width-s)),r=Math.round(f*(u.height-c))}else n=window.getComputedStyle(t),r=parseFloat(n.height)||o.height,a=parseFloat(n.width)||o.width;return Math.abs(o.width-a)>1||Math.abs(o.height-r)>1?(o.height=t.layout.height=r,o.width=t.layout.width=a):"initial"!==o.autosize&&(delete e.autosize,o.autosize=t.layout.autosize=!0),R.sanitizeMargins(o),e}function M(t){var e=C.select(t),n=t._fullLayout;if(n._container=e.selectAll(".plot-container").data([0]),n._container.enter().insert("div",":first-child").classed("plot-container",!0).classed("plotly",!0),n._paperdiv=n._container.selectAll(".svg-container").data([0]),n._paperdiv.enter().append("div").classed("svg-container",!0).style("position","relative"),"initial"===n.autosize&&(k(t,{}),n.autosize=!0,t.layout.autosize=!0),n._glcontainer=n._paperdiv.selectAll(".gl-container").data([0]),n._glcontainer.enter().append("div").classed("gl-container",!0),n._geocontainer=n._paperdiv.selectAll(".geo-container").data([0]),n._geocontainer.enter().append("div").classed("geo-container",!0),n._paperdiv.selectAll(".main-svg").remove(),n._paper=n._paperdiv.insert("svg",":first-child").classed("main-svg",!0),n._toppaper=n._paperdiv.append("svg").classed("main-svg",!0),!n._uid){var 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u.plot(t)},h.graphJson=function(t,e,n,r,a){function o(t){if("function"==typeof t)return null;if(f.isPlainObject(t)){var e,r,a={};for(e in t)if("function"!=typeof t[e]&&["_","["].indexOf(e.charAt(0))===-1){if("keepdata"===n){if("src"===e.substr(e.length-3))continue}else if("keepstream"===n){if(r=t[e+"src"],"string"==typeof r&&r.indexOf(":")>0&&!f.isPlainObject(t.stream))continue}else if("keepall"!==n&&(r=t[e+"src"],"string"==typeof r&&r.indexOf(":")>0))continue;a[e]=o(t[e])}return a}return Array.isArray(t)?t.map(o):t&&t.getTime?f.ms2DateTime(t):t}(a&&e&&!t._fullData||a&&!e&&!t._fullLayout)&&h.supplyDefaults(t);var i=a?t._fullData:t.data,l=a?t._fullLayout:t.layout,s={data:(i||[]).map(function(t){var n=o(t);return e&&delete n.fit,n})};return e||(s.layout=o(l)),t.framework&&t.framework.isPolar&&(s=t.framework.getConfig()),"object"===r?s:JSON.stringify(s)}},{"../components/color":25,"../lib":102,"../plotly":120,"./attributes":121,"./font_attributes":141,"./layout_attributes":142,d3:14,"fast-isnumeric":17}],144:[function(t,e,n){"use strict";var r=t("../../traces/scatter/attributes"),a=r.marker;e.exports={r:r.r,t:r.t,marker:{color:a.color,size:a.size,symbol:a.symbol,opacity:a.opacity}}},{"../../traces/scatter/attributes":236}],145:[function(t,e,n){"use strict";function r(t,e){var n={showline:{valType:"boolean"},showticklabels:{valType:"boolean"},tickorientation:{valType:"enumerated",values:["horizontal","vertical"]},ticklen:{valType:"number",min:0},tickcolor:{valType:"color"},ticksuffix:{valType:"string"},endpadding:{valType:"number"},visible:{valType:"boolean"}};return o({},e,n)}var a=t("../cartesian/layout_attributes"),o=t("../../lib/extend").extendFlat,i=o({},a.domain,{});e.exports={radialaxis:r("radial",{range:{valType:"info_array",items:[{valType:"number"},{valType:"number"}]},domain:i,orientation:{valType:"number"}}),angularaxis:r("angular",{range:{valType:"info_array",items:[{valType:"number",dflt:0},{valType:"number",dflt:360}]},domain:i}),layout:{direction:{valType:"enumerated",values:["clockwise","counterclockwise"]},orientation:{valType:"angle"}}}},{"../../lib/extend":100,"../cartesian/layout_attributes":132}],146:[function(t,e,n){var r=t("../../plotly"),a=t("d3"),o=e.exports={version:"0.2.2",manager:t("./micropolar_manager")},i=r.Lib.extendDeepAll;o.Axis=function(){function t(t){n=t||n;var c=s.data,f=s.layout;return("string"==typeof n||n.nodeName)&&(n=a.select(n)),n.datum(c).each(function(t,n){function s(t,e){return l(t)%360+f.orientation}var c=t.slice();u={data:o.util.cloneJson(c),layout:o.util.cloneJson(f)};var d=0;c.forEach(function(t,e){t.color||(t.color=f.defaultColorRange[d],d=(d+1)%f.defaultColorRange.length),t.strokeColor||(t.strokeColor="LinePlot"===t.geometry?t.color:a.rgb(t.color).darker().toString()),u.data[e].color=t.color,u.data[e].strokeColor=t.strokeColor,u.data[e].strokeDash=t.strokeDash,u.data[e].strokeSize=t.strokeSize});var h=c.filter(function(t,e){var n=t.visible;return"undefined"==typeof n||n===!0}),p=!1,g=h.map(function(t,e){return p=p||"undefined"!=typeof t.groupId,t});if(p){var m=a.nest().key(function(t,e){return"undefined"!=typeof t.groupId?t.groupId:"unstacked"}).entries(g),v=[],y=m.map(function(t,e){if("unstacked"===t.key)return t.values;var n=t.values[0].r.map(function(t,e){return 0});return t.values.forEach(function(t,e,r){t.yStack=[n],v.push(n),n=o.util.sumArrays(t.r,n)}),t.values});h=a.merge(y)}h.forEach(function(t,e){t.t=Array.isArray(t.t[0])?t.t:[t.t],t.r=Array.isArray(t.r[0])?t.r:[t.r]});var x=Math.min(f.width-f.margin.left-f.margin.right,f.height-f.margin.top-f.margin.bottom)/2;x=Math.max(10,x);var b,_=[f.margin.left+x,f.margin.top+x];if(p){var w=a.max(o.util.sumArrays(o.util.arrayLast(h).r[0],o.util.arrayLast(v)));b=[0,w]}else b=a.extent(o.util.flattenArray(h.map(function(t,e){return t.r})));f.radialAxis.domain!=o.DATAEXTENT&&(b[0]=0),r=a.scale.linear().domain(f.radialAxis.domain!=o.DATAEXTENT&&f.radialAxis.domain?f.radialAxis.domain:b).range([0,x]),u.layout.radialAxis.domain=r.domain();var k,M=o.util.flattenArray(h.map(function(t,e){return t.t})),A="string"==typeof M[0];A&&(M=o.util.deduplicate(M),k=M.slice(),M=a.range(M.length),h=h.map(function(t,e){var n=t;return t.t=[M],p&&(n.yStack=t.yStack),n}));var T=h.filter(function(t,e){return"LinePlot"===t.geometry||"DotPlot"===t.geometry}).length===h.length,L=null===f.needsEndSpacing?A||!T:f.needsEndSpacing,z=f.angularAxis.domain&&f.angularAxis.domain!=o.DATAEXTENT&&!A&&f.angularAxis.domain[0]>=0,S=z?f.angularAxis.domain:a.extent(M),C=Math.abs(M[1]-M[0]);T&&!A&&(C=0);var E=S.slice();L&&A&&(E[1]+=C);var O=f.angularAxis.ticksCount||4;O>8&&(O=O/(O/8)+O%8),f.angularAxis.ticksStep&&(O=(E[1]-E[0])/O);var P=f.angularAxis.ticksStep||(E[1]-E[0])/(O*(f.minorTicks+1));k&&(P=Math.max(Math.round(P),1)),E[2]||(E[2]=P);var N=a.range.apply(this,E);if(N=N.map(function(t,e){return parseFloat(t.toPrecision(12))}),l=a.scale.linear().domain(E.slice(0,2)).range("clockwise"===f.direction?[0,360]:[360,0]),u.layout.angularAxis.domain=l.domain(),u.layout.angularAxis.endPadding=L?C:0,e=a.select(this).select("svg.chart-root"),"undefined"==typeof e||e.empty()){var D="<svg xmlns='http://www.w3.org/2000/svg' class='chart-root'>' + '<g class='outer-group'>' + '<g class='chart-group'>' + '<circle class='background-circle'></circle>' + '<g class='geometry-group'></g>' + '<g class='radial axis-group'>' + '<circle class='outside-circle'></circle>' + '</g>' + '<g class='angular axis-group'></g>' + '<g class='guides-group'><line></line><circle r='0'></circle></g>' + '</g>' + '<g class='legend-group'></g>' + '<g class='tooltips-group'></g>' + '<g class='title-group'><text></text></g>' + '</g>' + '</svg>",I=(new DOMParser).parseFromString(D,"application/xml"),R=this.appendChild(this.ownerDocument.importNode(I.documentElement,!0));e=a.select(R)}e.select(".guides-group").style({"pointer-events":"none"}),e.select(".angular.axis-group").style({"pointer-events":"none"}),e.select(".radial.axis-group").style({"pointer-events":"none"});var j,F=e.select(".chart-group"),q={fill:"none",stroke:f.tickColor},B={"font-size":f.font.size,"font-family":f.font.family,fill:f.font.color,"text-shadow":["-1px 0px","1px -1px","-1px 1px","1px 1px"].map(function(t,e){return" "+t+" 0 "+f.font.outlineColor}).join(",")};if(f.showLegend){j=e.select(".legend-group").attr({transform:"translate("+[x,f.margin.top]+")"}).style({display:"block"});var H=h.map(function(t,e){var n=o.util.cloneJson(t);return n.symbol="DotPlot"===t.geometry?t.dotType||"circle":"LinePlot"!=t.geometry?"square":"line",n.visibleInLegend="undefined"==typeof t.visibleInLegend||t.visibleInLegend,n.color="LinePlot"===t.geometry?t.strokeColor:t.color,n});o.Legend().config({data:h.map(function(t,e){return t.name||"Element"+e}),legendConfig:i({},o.Legend.defaultConfig().legendConfig,{container:j,elements:H,reverseOrder:f.legend.reverseOrder})})();var V=j.node().getBBox();x=Math.min(f.width-V.width-f.margin.left-f.margin.right,f.height-f.margin.top-f.margin.bottom)/2,x=Math.max(10,x),_=[f.margin.left+x,f.margin.top+x],r.range([0,x]),u.layout.radialAxis.domain=r.domain(),j.attr("transform","translate("+[_[0]+x,_[1]-x]+")")}else j=e.select(".legend-group").style({display:"none"});e.attr({width:f.width,height:f.height}).style({opacity:f.opacity}),F.attr("transform","translate("+_+")").style({cursor:"crosshair"});var Z=[(f.width-(f.margin.left+f.margin.right+2*x+(V?V.width:0)))/2,(f.height-(f.margin.top+f.margin.bottom+2*x))/2];if(Z[0]=Math.max(0,Z[0]),Z[1]=Math.max(0,Z[1]),e.select(".outer-group").attr("transform","translate("+Z+")"),f.title){var U=e.select("g.title-group text").style(B).text(f.title),Y=U.node().getBBox();U.attr({x:_[0]-Y.width/2,y:_[1]-x-20})}var X=e.select(".radial.axis-group");if(f.radialAxis.gridLinesVisible){var G=X.selectAll("circle.grid-circle").data(r.ticks(5));G.enter().append("circle").attr({class:"grid-circle"}).style(q),G.attr("r",r),G.exit().remove()}X.select("circle.outside-circle").attr({r:x}).style(q);var $=e.select("circle.background-circle").attr({r:x}).style({fill:f.backgroundColor,stroke:f.stroke});if(f.radialAxis.visible){var Q=a.svg.axis().scale(r).ticks(5).tickSize(5);X.call(Q).attr({transform:"rotate("+f.radialAxis.orientation+")"}),X.selectAll(".domain").style(q),X.selectAll("g>text").text(function(t,e){return this.textContent+f.radialAxis.ticksSuffix}).style(B).style({"text-anchor":"start"}).attr({x:0,y:0,dx:0,dy:0,transform:function(t,e){return"horizontal"===f.radialAxis.tickOrientation?"rotate("+-f.radialAxis.orientation+") translate("+[0,B["font-size"]]+")":"translate("+[0,B["font-size"]]+")"}}),X.selectAll("g>line").style({stroke:"black"})}var W=e.select(".angular.axis-group").selectAll("g.angular-tick").data(N),J=W.enter().append("g").classed("angular-tick",!0);W.attr({transform:function(t,e){return"rotate("+s(t,e)+")"}}).style({display:f.angularAxis.visible?"block":"none"}),W.exit().remove(),J.append("line").classed("grid-line",!0).classed("major",function(t,e){return e%(f.minorTicks+1)==0}).classed("minor",function(t,e){return!(e%(f.minorTicks+1)==0)}).style(q),J.selectAll(".minor").style({stroke:f.minorTickColor}),W.select("line.grid-line").attr({x1:f.tickLength?x-f.tickLength:0,x2:x}).style({display:f.angularAxis.gridLinesVisible?"block":"none"}),J.append("text").classed("axis-text",!0).style(B);var K=W.select("text.axis-text").attr({x:x+f.labelOffset,dy:".35em",transform:function(t,e){var n=s(t,e),r=x+f.labelOffset,a=f.angularAxis.tickOrientation;return"horizontal"==a?"rotate("+-n+" "+r+" 0)":"radial"==a?n<270&&n>90?"rotate(180 "+r+" 0)":null:"rotate("+(n<=180&&n>0?-90:90)+" "+r+" 0)"}}).style({"text-anchor":"middle",display:f.angularAxis.labelsVisible?"block":"none"}).text(function(t,e){return e%(f.minorTicks+1)!=0?"":k?k[t]+f.angularAxis.ticksSuffix:t+f.angularAxis.ticksSuffix}).style(B);f.angularAxis.rewriteTicks&&K.text(function(t,e){return e%(f.minorTicks+1)!=0?"":f.angularAxis.rewriteTicks(this.textContent,e)});var tt=a.max(F.selectAll(".angular-tick text")[0].map(function(t,e){return t.getCTM().e+t.getBBox().width}));j.attr({transform:"translate("+[x+tt,f.margin.top]+")"});var et=e.select("g.geometry-group").selectAll("g").size()>0,nt=e.select("g.geometry-group").selectAll("g.geometry").data(h);if(nt.enter().append("g").attr({class:function(t,e){return"geometry geometry"+e}}),nt.exit().remove(),h[0]||et){var rt=[];h.forEach(function(t,e){var n={};n.radialScale=r,n.angularScale=l,n.container=nt.filter(function(t,n){return n==e}),n.geometry=t.geometry,n.orientation=f.orientation,n.direction=f.direction,n.index=e,rt.push({data:t,geometryConfig:n})});var at=a.nest().key(function(t,e){return"undefined"!=typeof t.data.groupId||"unstacked"}).entries(rt),ot=[];at.forEach(function(t,e){"unstacked"===t.key?ot=ot.concat(t.values.map(function(t,e){return[t]})):ot.push(t.values)}),ot.forEach(function(t,e){var n;n=Array.isArray(t)?t[0].geometryConfig.geometry:t.geometryConfig.geometry;var r=t.map(function(t,e){return i(o[n].defaultConfig(),t)});o[n]().config(r)()})}var it,lt,st=e.select(".guides-group"),ct=e.select(".tooltips-group"),ut=o.tooltipPanel().config({container:ct,fontSize:8})(),ft=o.tooltipPanel().config({container:ct,fontSize:8})(),dt=o.tooltipPanel().config({container:ct,hasTick:!0})();if(!A){var ht=st.select("line").attr({x1:0,y1:0,y2:0}).style({stroke:"grey","pointer-events":"none"});F.on("mousemove.angular-guide",function(t,e){var n=o.util.getMousePos($).angle;ht.attr({x2:-x,transform:"rotate("+n+")"}).style({opacity:.5});var r=(n+180+360-f.orientation)%360;it=l.invert(r);var a=o.util.convertToCartesian(x+12,n+180);ut.text(o.util.round(it)).move([a[0]+_[0],a[1]+_[1]])}).on("mouseout.angular-guide",function(t,e){st.select("line").style({opacity:0})})}var pt=st.select("circle").style({stroke:"grey",fill:"none"});F.on("mousemove.radial-guide",function(t,e){var n=o.util.getMousePos($).radius;pt.attr({r:n}).style({opacity:.5}),lt=r.invert(o.util.getMousePos($).radius);var a=o.util.convertToCartesian(n,f.radialAxis.orientation);ft.text(o.util.round(lt)).move([a[0]+_[0],a[1]+_[1]])}).on("mouseout.radial-guide",function(t,e){pt.style({opacity:0}),dt.hide(),ut.hide(),ft.hide()}),e.selectAll(".geometry-group .mark").on("mouseover.tooltip",function(t,n){var r=a.select(this),i=r.style("fill"),l="black",s=r.style("opacity")||1;if(r.attr({"data-opacity":s}),"none"!=i){r.attr({"data-fill":i}),l=a.hsl(i).darker().toString(),r.style({fill:l,opacity:1});var c={t:o.util.round(t[0]),r:o.util.round(t[1])};A&&(c.t=k[t[0]]);var u="t: "+c.t+", r: "+c.r,f=this.getBoundingClientRect(),d=e.node().getBoundingClientRect(),h=[f.left+f.width/2-Z[0]-d.left,f.top+f.height/2-Z[1]-d.top];dt.config({color:l}).text(u),dt.move(h)}else 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e},a.rebind(d,f,"on"),d},o.Axis.defaultConfig=function(t,e){var n={data:[{t:[1,2,3,4],r:[10,11,12,13],name:"Line1",geometry:"LinePlot",color:null,strokeDash:"solid",strokeColor:null,strokeSize:"1",visibleInLegend:!0,opacity:1}],layout:{defaultColorRange:a.scale.category10().range(),title:null,height:450,width:500,margin:{top:40,right:40,bottom:40,left:40},font:{size:12,color:"gray",outlineColor:"white",family:"Tahoma, sans-serif"},direction:"clockwise",orientation:0,labelOffset:10,radialAxis:{domain:null,orientation:-45,ticksSuffix:"",visible:!0,gridLinesVisible:!0,tickOrientation:"horizontal",rewriteTicks:null},angularAxis:{domain:[0,360],ticksSuffix:"",visible:!0,gridLinesVisible:!0,labelsVisible:!0,tickOrientation:"horizontal",rewriteTicks:null,ticksCount:null,ticksStep:null},minorTicks:0,tickLength:null,tickColor:"silver",minorTickColor:"#eee",backgroundColor:"none",needsEndSpacing:null,showLegend:!0,legend:{reverseOrder:!1},opacity:1}};return 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r=t("../../components/colorscale/color_attributes"),a=t("../../components/drawing"),o=(t("./constants"),t("../../lib/extend").extendFlat);e.exports={x:{valType:"data_array"},x0:{valType:"any",dflt:0},dx:{valType:"number",dflt:1},y:{valType:"data_array"},y0:{valType:"any",dflt:0},dy:{valType:"number",dflt:1},text:{valType:"string",dflt:"",arrayOk:!0},mode:{valType:"flaglist",flags:["lines","markers","text"],extras:["none"]},hoveron:{valType:"flaglist",flags:["points","fills"]},line:{color:{valType:"color"},width:{valType:"number",min:0,dflt:2},shape:{valType:"enumerated",values:["linear","spline","hv","vh","hvh","vhv"],dflt:"linear"},smoothing:{valType:"number",min:0,max:1.3,dflt:1},dash:{valType:"string",values:["solid","dot","dash","longdash","dashdot","longdashdot"],dflt:"solid"}},connectgaps:{valType:"boolean",dflt:!1},fill:{valType:"enumerated",values:["none","tozeroy","tozerox","tonexty","tonextx","toself","tonext"],dflt:"none"},fillcolor:{valType:"color"},marker:o({},{symbol:{valType:"enumerated",values:a.symbolList,dflt:"circle",arrayOk:!0},opacity:{valType:"number",min:0,max:1,arrayOk:!0},size:{valType:"number",min:0,dflt:6,arrayOk:!0},maxdisplayed:{valType:"number",min:0,dflt:0},sizeref:{valType:"number",dflt:1},sizemin:{valType:"number",min:0,dflt:0},sizemode:{valType:"enumerated",values:["diameter","area"],dflt:"diameter"},showscale:{valType:"boolean",dflt:!1},line:o({},{width:{valType:"number",min:0,arrayOk:!0}},r("marker.line"))},r("marker")),textposition:{valType:"enumerated",values:["top 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g={padded:!0},m={padded:!0};if(i.hasMarkers(e)){if(n=e.marker,s=n.size,Array.isArray(s)){var v={type:"linear"};a.setConvert(v),s=v.makeCalcdata(e.marker,"size"),s.length>p&&s.splice(p,s.length-p)}var y,x=1.6*(e.marker.sizeref||1);y="area"===e.marker.sizemode?function(t){return Math.max(Math.sqrt((t||0)/x),3)}:function(t){return Math.max((t||0)/x,3)},g.ppad=m.ppad=Array.isArray(s)?s.map(y):y(s)}l(e),!("tozerox"===e.fill||"tonextx"===e.fill&&t.firstscatter)||d[0]===d[p-1]&&h[0]===h[p-1]?e.error_y.visible||["tonexty","tozeroy"].indexOf(e.fill)===-1&&(i.hasMarkers(e)||i.hasText(e))||(g.padded=!1,g.ppad=0):g.tozero=!0,!("tozeroy"===e.fill||"tonexty"===e.fill&&t.firstscatter)||d[0]===d[p-1]&&h[0]===h[p-1]?["tonextx","tozerox"].indexOf(e.fill)!==-1&&(m.padded=!1):m.tozero=!0,a.expand(u,d,g),a.expand(f,h,m);var b=new Array(p);for(c=0;c<p;c++)b[c]=r(d[c])&&r(h[c])?{x:d[c],y:h[c]}:{x:!1,y:!1};return void 0!==typeof s&&o.mergeArray(s,b,"ms"),t.firstscatter=!1,b}},{"../../lib":102,"../../plots/cartesian/axes":123,"./colorscale_calc":240,"./subtypes":255,"fast-isnumeric":17}],238:[function(t,e,n){"use strict";e.exports=function(t){var e,n,r,a,o;for(e=0;e<t.length;e++)if(n=t[e],r=n.fill,"none"!==r&&"scatter"===n.type&&(n.opacity=void 0,"tonexty"===r||"tonextx"===r))for(a=e-1;a>=0;a--)if(o=t[a],"scatter"===o.type&&o.xaxis===n.xaxis&&o.yaxis===n.yaxis){o.opacity=void 0;break}}},{}],239:[function(t,e,n){"use strict";var r=t("d3"),a=t("fast-isnumeric"),o=t("../../lib"),i=t("../../plots/plots"),l=t("../../components/colorscale/get_scale"),s=t("../../components/colorbar/draw");e.exports=function(t,e){var n=e[0].trace,c=n.marker,u="cb"+n.uid;if(t._fullLayout._infolayer.selectAll("."+u).remove(),void 0===c||!c.showscale)return void i.autoMargin(t,u);var f=l(c.colorscale),d=c.color,h=c.cmin,p=c.cmax;a(h)||(h=o.aggNums(Math.min,null,d)),a(p)||(p=o.aggNums(Math.max,null,d));var g=e[0].t.cb=s(t,u);g.fillcolor(r.scale.linear().domain(f.map(function(t){return h+t[0]*(p-h)})).range(f.map(function(t){return t[1]}))).filllevels({start:h,end:p,size:(p-h)/254}).options(c.colorbar)()}},{"../../components/colorbar/draw":28,"../../components/colorscale/get_scale":37,"../../lib":102,"../../plots/plots":143,d3:14,"fast-isnumeric":17}],240:[function(t,e,n){"use strict";var r=t("../../components/colorscale/has_colorscale"),a=t("../../components/colorscale/calc"),o=t("./subtypes");e.exports=function(t){o.hasLines(t)&&r(t,"line")&&a(t,t.line.color,"line","c"),o.hasMarkers(t)&&(r(t,"marker")&&a(t,t.marker.color,"marker","c"),r(t,"marker.line")&&a(t,t.marker.line.color,"marker.line","c"))}},{"../../components/colorscale/calc":32,"../../components/colorscale/has_colorscale":38,"./subtypes":255}],241:[function(t,e,n){"use strict";e.exports={PTS_LINESONLY:20}},{}],242:[function(t,e,n){"use strict";var r=t("../../lib"),a=t("./attributes"),o=t("./constants"),i=t("./subtypes"),l=t("./xy_defaults"),s=t("./marker_defaults"),c=t("./line_defaults"),u=t("./line_shape_defaults"),f=t("./text_defaults"),d=t("./fillcolor_defaults"),h=t("../../components/errorbars/defaults");e.exports=function(t,e,n,p){function g(n,o){return r.coerce(t,e,a,n,o)}var m=l(t,e,g),v=m<o.PTS_LINESONLY?"lines+markers":"lines";if(!m)return void(e.visible=!1);g("text"),g("mode",v),i.hasLines(e)&&(c(t,e,n,p,g),u(t,e,g),g("connectgaps")),i.hasMarkers(e)&&s(t,e,n,p,g),i.hasText(e)&&f(t,e,p,g);var y=[];(i.hasMarkers(e)||i.hasText(e))&&(g("marker.maxdisplayed"),y.push("points")),g("fill"),"none"!==e.fill&&(d(t,e,n,g),i.hasLines(e)||u(t,e,g)),"tonext"!==e.fill&&"toself"!==e.fill||y.push("fills"),g("hoveron",y.join("+")||"points"),h(t,e,n,{axis:"y"}),h(t,e,n,{axis:"x",inherit:"y"})}},{"../../components/errorbars/defaults":53,"../../lib":102,"./attributes":236,"./constants":241,"./fillcolor_defaults":243,"./line_defaults":247,"./line_shape_defaults":249,"./marker_defaults":251,"./subtypes":255,"./text_defaults":256,"./xy_defaults":257}],243:[function(t,e,n){"use strict";var r=t("../../components/color");e.exports=function(t,e,n,a){var o=!1;if(e.marker){var i=e.marker.color,l=(e.marker.line||{}).color;i&&!Array.isArray(i)?o=i:l&&!Array.isArray(l)&&(o=l)}a("fillcolor",r.addOpacity((e.line||{}).color||o||n,.5))}},{"../../components/color":25}],244:[function(t,e,n){"use strict";var r=t("../../components/color"),a=t("./subtypes");e.exports=function(t,e){var n,o;if("lines"===t.mode)return n=t.line.color,n&&r.opacity(n)?n:t.fillcolor;if("none"===t.mode)return t.fill?t.fillcolor:"";var i=e.mcc||(t.marker||{}).color,l=e.mlcc||((t.marker||{}).line||{}).color;return o=i&&r.opacity(i)?i:l&&r.opacity(l)&&(e.mlw||((t.marker||{}).line||{}).width)?l:"",o?r.opacity(o)<.3?r.addOpacity(o,.3):o:(n=(t.line||{}).color,n&&r.opacity(n)&&a.hasLines(t)&&t.line.width?n:t.fillcolor)}},{"../../components/color":25,"./subtypes":255}],245:[function(t,e,n){"use strict";var r=t("../../lib"),a=t("../../plots/cartesian/graph_interact"),o=t("../../plots/cartesian/constants"),i=t("../../components/errorbars"),l=t("./get_trace_color"),s=t("../../components/color");e.exports=function(t,e,n,c){var u=t.cd,f=u[0].trace,d=t.xa,h=t.ya,p=d.c2p(e),g=h.c2p(n),m=[p,g];if(f.hoveron.indexOf("points")!==-1){var v=function(t){var e=Math.max(3,t.mrc||0);return Math.max(Math.abs(d.c2p(t.x)-p)-e,1-3/e)},y=function(t){var e=Math.max(3,t.mrc||0);return Math.max(Math.abs(h.c2p(t.y)-g)-e,1-3/e)},x=function(t){var 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c=1-s.y0/t.ya._length,u=t.xa._length,f=u*c/2,d=u-f;return s.x0=Math.max(Math.min(s.x0,d),f),s.x1=Math.max(Math.min(s.x1,d),f),l}var h=s.cd[s.index];s.a=h.a,s.b=h.b,s.c=h.c,s.xLabelVal=void 0,s.yLabelVal=void 0;var p=s.trace,g=p._ternary,m=p.hoverinfo.split("+"),v=[];return m.indexOf("all")!==-1&&(m=["a","b","c"]),m.indexOf("a")!==-1&&i(g.aaxis,h.a),m.indexOf("b")!==-1&&i(g.baxis,h.b),m.indexOf("c")!==-1&&i(g.caxis,h.c),s.extraText=v.join("<br>"),l}}},{"../../plots/cartesian/axes":123,"../scatter/hover":245}],262:[function(t,e,n){"use strict";var r={};r.attributes=t("./attributes"),r.supplyDefaults=t("./defaults"),r.colorbar=t("../scatter/colorbar"),r.calc=t("./calc"),r.plot=t("./plot"),r.style=t("./style"),r.hoverPoints=t("./hover"),r.selectPoints=t("./select"),r.moduleType="trace",r.name="scatterternary",r.basePlotModule=t("../../plots/ternary"),r.categories=["ternary","symbols","markerColorscale","showLegend"],r.meta={},e.exports=r},{"../../plots/ternary":150,"../scatter/colorbar":239,"./attributes":258,"./calc":259,"./defaults":260,"./hover":261,"./plot":263,"./select":264,"./style":265}],263:[function(t,e,n){"use strict";var r=t("../scatter/plot");e.exports=function(t,e){var n=t.plotContainer;n.select(".scatterlayer").selectAll("*").remove();for(var a={x:function(){return t.xaxis},y:function(){return t.yaxis},plot:n},o=new Array(e.length),i=t.graphDiv.calcdata,l=0;l<i.length;l++){var s=e.indexOf(i[l][0].trace);s!==-1&&(o[s]=i[l],e[s]._ternary=t)}r(t.graphDiv,a,o)}},{"../scatter/plot":252}],264:[function(t,e,n){"use strict";var r=t("../scatter/select");e.exports=function(t,e){var n=r(t,e);if(n){var a,o,i,l=t.cd;for(i=0;i<n.length;i++)a=n[i],o=l[a.pointNumber],a.a=o.a,a.b=o.b,a.c=o.c,delete a.x,delete a.y;return n}}},{"../scatter/select":253}],265:[function(t,e,n){"use strict";var r=t("../scatter/style");e.exports=function(t){for(var e=t._fullLayout._modules,n=0;n<e.length;n++)if("scatter"===e[n].name)return;r(t)}},{"../scatter/style":254}]},{},[11])(11)});
+\ No newline at end of file
+diff --git a/dist/plotly-geo.js b/dist/plotly-geo.js
+index 0432582..70d3872 100644
+--- a/dist/plotly-geo.js
++++ b/dist/plotly-geo.js
+@@ -242,399 +242,6 @@ module.exports = Plotly;
+ module.exports = require('../src/traces/scattergeo');
+ 
+ },{"../src/traces/scattergeo":200}],7:[function(require,module,exports){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+-
+-function EventEmitter() {
+-  this._events = this._events || {};
+-  this._maxListeners = this._maxListeners || undefined;
+-}
+-module.exports = EventEmitter;
+-
+-// Backwards-compat with node 0.10.x
+-EventEmitter.EventEmitter = EventEmitter;
+-
+-EventEmitter.prototype._events = undefined;
+-EventEmitter.prototype._maxListeners = undefined;
+-
+-// By default EventEmitters will print a warning if more than 10 listeners are
+-// added to it. This is a useful default which helps finding memory leaks.
+-EventEmitter.defaultMaxListeners = 10;
+-
+-// Obviously not all Emitters should be limited to 10. This function allows
+-// that to be increased. Set to zero for unlimited.
+-EventEmitter.prototype.setMaxListeners = function(n) {
+-  if (!isNumber(n) || n < 0 || isNaN(n))
+-    throw TypeError('n must be a positive number');
+-  this._maxListeners = n;
+-  return this;
+-};
+-
+-EventEmitter.prototype.emit = function(type) {
+-  var er, handler, len, args, i, listeners;
+-
+-  if (!this._events)
+-    this._events = {};
+-
+-  // If there is no 'error' event listener then throw.
+-  if (type === 'error') {
+-    if (!this._events.error ||
+-        (isObject(this._events.error) && !this._events.error.length)) {
+-      er = arguments[1];
+-      if (er instanceof Error) {
+-        throw er; // Unhandled 'error' event
+-      }
+-      throw TypeError('Uncaught, unspecified "error" event.');
+-    }
+-  }
+-
+-  handler = this._events[type];
+-
+-  if (isUndefined(handler))
+-    return false;
+-
+-  if (isFunction(handler)) {
+-    switch (arguments.length) {
+-      // fast cases
+-      case 1:
+-        handler.call(this);
+-        break;
+-      case 2:
+-        handler.call(this, arguments[1]);
+-        break;
+-      case 3:
+-        handler.call(this, arguments[1], arguments[2]);
+-        break;
+-      // slower
+-      default:
+-        args = Array.prototype.slice.call(arguments, 1);
+-        handler.apply(this, args);
+-    }
+-  } else if (isObject(handler)) {
+-    args = Array.prototype.slice.call(arguments, 1);
+-    listeners = handler.slice();
+-    len = listeners.length;
+-    for (i = 0; i < len; i++)
+-      listeners[i].apply(this, args);
+-  }
+-
+-  return true;
+-};
+-
+-EventEmitter.prototype.addListener = function(type, listener) {
+-  var m;
+-
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  if (!this._events)
+-    this._events = {};
+-
+-  // To avoid recursion in the case that type === "newListener"! Before
+-  // adding it to the listeners, first emit "newListener".
+-  if (this._events.newListener)
+-    this.emit('newListener', type,
+-              isFunction(listener.listener) ?
+-              listener.listener : listener);
+-
+-  if (!this._events[type])
+-    // Optimize the case of one listener. Don't need the extra array object.
+-    this._events[type] = listener;
+-  else if (isObject(this._events[type]))
+-    // If we've already got an array, just append.
+-    this._events[type].push(listener);
+-  else
+-    // Adding the second element, need to change to array.
+-    this._events[type] = [this._events[type], listener];
+-
+-  // Check for listener leak
+-  if (isObject(this._events[type]) && !this._events[type].warned) {
+-    if (!isUndefined(this._maxListeners)) {
+-      m = this._maxListeners;
+-    } else {
+-      m = EventEmitter.defaultMaxListeners;
+-    }
+-
+-    if (m && m > 0 && this._events[type].length > m) {
+-      this._events[type].warned = true;
+-      console.error('(node) warning: possible EventEmitter memory ' +
+-                    'leak detected. %d listeners added. ' +
+-                    'Use emitter.setMaxListeners() to increase limit.',
+-                    this._events[type].length);
+-      if (typeof console.trace === 'function') {
+-        // not supported in IE 10
+-        console.trace();
+-      }
+-    }
+-  }
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+-
+-EventEmitter.prototype.once = function(type, listener) {
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  var fired = false;
+-
+-  function g() {
+-    this.removeListener(type, g);
+-
+-    if (!fired) {
+-      fired = true;
+-      listener.apply(this, arguments);
+-    }
+-  }
+-
+-  g.listener = listener;
+-  this.on(type, g);
+-
+-  return this;
+-};
+-
+-// emits a 'removeListener' event iff the listener was removed
+-EventEmitter.prototype.removeListener = function(type, listener) {
+-  var list, position, length, i;
+-
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  if (!this._events || !this._events[type])
+-    return this;
+-
+-  list = this._events[type];
+-  length = list.length;
+-  position = -1;
+-
+-  if (list === listener ||
+-      (isFunction(list.listener) && list.listener === listener)) {
+-    delete this._events[type];
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+-
+-  } else if (isObject(list)) {
+-    for (i = length; i-- > 0;) {
+-      if (list[i] === listener ||
+-          (list[i].listener && list[i].listener === listener)) {
+-        position = i;
+-        break;
+-      }
+-    }
+-
+-    if (position < 0)
+-      return this;
+-
+-    if (list.length === 1) {
+-      list.length = 0;
+-      delete this._events[type];
+-    } else {
+-      list.splice(position, 1);
+-    }
+-
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+-  }
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.removeAllListeners = function(type) {
+-  var key, listeners;
+-
+-  if (!this._events)
+-    return this;
+-
+-  // not listening for removeListener, no need to emit
+-  if (!this._events.removeListener) {
+-    if (arguments.length === 0)
+-      this._events = {};
+-    else if (this._events[type])
+-      delete this._events[type];
+-    return this;
+-  }
+-
+-  // emit removeListener for all listeners on all events
+-  if (arguments.length === 0) {
+-    for (key in this._events) {
+-      if (key === 'removeListener') continue;
+-      this.removeAllListeners(key);
+-    }
+-    this.removeAllListeners('removeListener');
+-    this._events = {};
+-    return this;
+-  }
+-
+-  listeners = this._events[type];
+-
+-  if (isFunction(listeners)) {
+-    this.removeListener(type, listeners);
+-  } else if (listeners) {
+-    // LIFO order
+-    while (listeners.length)
+-      this.removeListener(type, listeners[listeners.length - 1]);
+-  }
+-  delete this._events[type];
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.listeners = function(type) {
+-  var ret;
+-  if (!this._events || !this._events[type])
+-    ret = [];
+-  else if (isFunction(this._events[type]))
+-    ret = [this._events[type]];
+-  else
+-    ret = this._events[type].slice();
+-  return ret;
+-};
+-
+-EventEmitter.prototype.listenerCount = function(type) {
+-  if (this._events) {
+-    var evlistener = this._events[type];
+-
+-    if (isFunction(evlistener))
+-      return 1;
+-    else if (evlistener)
+-      return evlistener.length;
+-  }
+-  return 0;
+-};
+-
+-EventEmitter.listenerCount = function(emitter, type) {
+-  return emitter.listenerCount(type);
+-};
+-
+-function isFunction(arg) {
+-  return typeof arg === 'function';
+-}
+-
+-function isNumber(arg) {
+-  return typeof arg === 'number';
+-}
+-
+-function isObject(arg) {
+-  return typeof arg === 'object' && arg !== null;
+-}
+-
+-function isUndefined(arg) {
+-  return arg === void 0;
+-}
+-
+-},{}],8:[function(require,module,exports){
+-// shim for using process in browser
+-
+-var process = module.exports = {};
+-var queue = [];
+-var draining = false;
+-var currentQueue;
+-var queueIndex = -1;
+-
+-function cleanUpNextTick() {
+-    draining = false;
+-    if (currentQueue.length) {
+-        queue = currentQueue.concat(queue);
+-    } else {
+-        queueIndex = -1;
+-    }
+-    if (queue.length) {
+-        drainQueue();
+-    }
+-}
+-
+-function drainQueue() {
+-    if (draining) {
+-        return;
+-    }
+-    var timeout = setTimeout(cleanUpNextTick);
+-    draining = true;
+-
+-    var len = queue.length;
+-    while(len) {
+-        currentQueue = queue;
+-        queue = [];
+-        while (++queueIndex < len) {
+-            if (currentQueue) {
+-                currentQueue[queueIndex].run();
+-            }
+-        }
+-        queueIndex = -1;
+-        len = queue.length;
+-    }
+-    currentQueue = null;
+-    draining = false;
+-    clearTimeout(timeout);
+-}
+-
+-process.nextTick = function (fun) {
+-    var args = new Array(arguments.length - 1);
+-    if (arguments.length > 1) {
+-        for (var i = 1; i < arguments.length; i++) {
+-            args[i - 1] = arguments[i];
+-        }
+-    }
+-    queue.push(new Item(fun, args));
+-    if (queue.length === 1 && !draining) {
+-        setTimeout(drainQueue, 0);
+-    }
+-};
+-
+-// v8 likes predictible objects
+-function Item(fun, array) {
+-    this.fun = fun;
+-    this.array = array;
+-}
+-Item.prototype.run = function () {
+-    this.fun.apply(null, this.array);
+-};
+-process.title = 'browser';
+-process.browser = true;
+-process.env = {};
+-process.argv = [];
+-process.version = ''; // empty string to avoid regexp issues
+-process.versions = {};
+-
+-function noop() {}
+-
+-process.on = noop;
+-process.addListener = noop;
+-process.once = noop;
+-process.off = noop;
+-process.removeListener = noop;
+-process.removeAllListeners = noop;
+-process.emit = noop;
+-
+-process.binding = function (name) {
+-    throw new Error('process.binding is not supported');
+-};
+-
+-process.cwd = function () { return '/' };
+-process.chdir = function (dir) {
+-    throw new Error('process.chdir is not supported');
+-};
+-process.umask = function() { return 0; };
+-
+-},{}],9:[function(require,module,exports){
+ module.exports = {
+   AFG: "afghan",
+   ALA: "\\b\\wland",
+@@ -681,7 +288,7 @@ module.exports = {
+   CAF: "\\bcentral.african.republic",
+   TCD: "\\bchad",
+   CHL: "\\bchile",
+-  CHN: "^(?!.*\\bmac)(?!.*\\bhong)(?!.*\\btai).*china",
++  CHN: "^(?!.*\\bmac)(?!.*\\bhong)(?!.*\\btai)(?!.*\\brep).*china|^(?=.*peo)(?=.*rep).*china",
+   CXR: "christmas",
+   CCK: "\\bcocos|keeling",
+   COL: "colombia",
+@@ -856,7 +463,7 @@ module.exports = {
+   SWE: "sweden",
+   CHE: "switz|swiss",
+   SYR: "syria",
+-  TWN: "taiwan|taipei|formosa",
++  TWN: "taiwan|taipei|formosa|^(?!.*peo)(?=.*rep).*china",
+   TJK: "tajik",
+   TZA: "tanzania",
+   THA: "thailand|\\bsiam",
+@@ -893,10 +500,10 @@ module.exports = {
+   ZWE: "zimbabwe|^(?!.*northern).*rhodesia"
+ };
+ 
+-},{}],10:[function(require,module,exports){
++},{}],8:[function(require,module,exports){
+ !function() {
+   var d3 = {
+-    version: "3.5.16"
++    version: "3.5.17"
+   };
+   var d3_arraySlice = [].slice, d3_array = function(list) {
+     return d3_arraySlice.call(list);
+@@ -4421,7 +4028,7 @@ module.exports = {
+         λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
+       }
+     }
+-    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
++    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
+   }
+   function d3_geo_clipCircle(radius) {
+     var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
+@@ -10448,965 +10055,1468 @@ module.exports = {
+   });
+   if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
+ }();
+-},{}],11:[function(require,module,exports){
++},{}],9:[function(require,module,exports){
+ (function (process,global){
+ /*!
+  * @overview es6-promise - a tiny implementation of Promises/A+.
+  * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
+  * @license   Licensed under MIT license
+- *            See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
+- * @version   3.1.2
++ *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
++ * @version   3.3.1
+  */
+ 
+-(function() {
+-    "use strict";
+-    function lib$es6$promise$utils$$objectOrFunction(x) {
+-      return typeof x === 'function' || (typeof x === 'object' && x !== null);
+-    }
++(function (global, factory) {
++    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
++    typeof define === 'function' && define.amd ? define(factory) :
++    (global.ES6Promise = factory());
++}(this, (function () { 'use strict';
+ 
+-    function lib$es6$promise$utils$$isFunction(x) {
+-      return typeof x === 'function';
+-    }
++function objectOrFunction(x) {
++  return typeof x === 'function' || typeof x === 'object' && x !== null;
++}
+ 
+-    function lib$es6$promise$utils$$isMaybeThenable(x) {
+-      return typeof x === 'object' && x !== null;
+-    }
++function isFunction(x) {
++  return typeof x === 'function';
++}
+ 
+-    var lib$es6$promise$utils$$_isArray;
+-    if (!Array.isArray) {
+-      lib$es6$promise$utils$$_isArray = function (x) {
+-        return Object.prototype.toString.call(x) === '[object Array]';
+-      };
++var _isArray = undefined;
++if (!Array.isArray) {
++  _isArray = function (x) {
++    return Object.prototype.toString.call(x) === '[object Array]';
++  };
++} else {
++  _isArray = Array.isArray;
++}
++
++var isArray = _isArray;
++
++var len = 0;
++var vertxNext = undefined;
++var customSchedulerFn = undefined;
++
++var asap = function asap(callback, arg) {
++  queue[len] = callback;
++  queue[len + 1] = arg;
++  len += 2;
++  if (len === 2) {
++    // If len is 2, that means that we need to schedule an async flush.
++    // If additional callbacks are queued before the queue is flushed, they
++    // will be processed by this flush that we are scheduling.
++    if (customSchedulerFn) {
++      customSchedulerFn(flush);
+     } else {
+-      lib$es6$promise$utils$$_isArray = Array.isArray;
+-    }
+-
+-    var lib$es6$promise$utils$$isArray = lib$es6$promise$utils$$_isArray;
+-    var lib$es6$promise$asap$$len = 0;
+-    var lib$es6$promise$asap$$vertxNext;
+-    var lib$es6$promise$asap$$customSchedulerFn;
+-
+-    var lib$es6$promise$asap$$asap = function asap(callback, arg) {
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len] = callback;
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len + 1] = arg;
+-      lib$es6$promise$asap$$len += 2;
+-      if (lib$es6$promise$asap$$len === 2) {
+-        // If len is 2, that means that we need to schedule an async flush.
+-        // If additional callbacks are queued before the queue is flushed, they
+-        // will be processed by this flush that we are scheduling.
+-        if (lib$es6$promise$asap$$customSchedulerFn) {
+-          lib$es6$promise$asap$$customSchedulerFn(lib$es6$promise$asap$$flush);
+-        } else {
+-          lib$es6$promise$asap$$scheduleFlush();
+-        }
+-      }
++      scheduleFlush();
+     }
++  }
++};
+ 
+-    function lib$es6$promise$asap$$setScheduler(scheduleFn) {
+-      lib$es6$promise$asap$$customSchedulerFn = scheduleFn;
+-    }
++function setScheduler(scheduleFn) {
++  customSchedulerFn = scheduleFn;
++}
+ 
+-    function lib$es6$promise$asap$$setAsap(asapFn) {
+-      lib$es6$promise$asap$$asap = asapFn;
+-    }
++function setAsap(asapFn) {
++  asap = asapFn;
++}
+ 
+-    var lib$es6$promise$asap$$browserWindow = (typeof window !== 'undefined') ? window : undefined;
+-    var lib$es6$promise$asap$$browserGlobal = lib$es6$promise$asap$$browserWindow || {};
+-    var lib$es6$promise$asap$$BrowserMutationObserver = lib$es6$promise$asap$$browserGlobal.MutationObserver || lib$es6$promise$asap$$browserGlobal.WebKitMutationObserver;
+-    var lib$es6$promise$asap$$isNode = typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';
++var browserWindow = typeof window !== 'undefined' ? window : undefined;
++var browserGlobal = browserWindow || {};
++var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
++var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]';
+ 
+-    // test for web worker but not in IE10
+-    var lib$es6$promise$asap$$isWorker = typeof Uint8ClampedArray !== 'undefined' &&
+-      typeof importScripts !== 'undefined' &&
+-      typeof MessageChannel !== 'undefined';
++// test for web worker but not in IE10
++var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined';
+ 
+-    // node
+-    function lib$es6$promise$asap$$useNextTick() {
+-      // node version 0.10.x displays a deprecation warning when nextTick is used recursively
+-      // see https://github.com/cujojs/when/issues/410 for details
+-      return function() {
+-        process.nextTick(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// node
++function useNextTick() {
++  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
++  // see https://github.com/cujojs/when/issues/410 for details
++  return function () {
++    return process.nextTick(flush);
++  };
++}
+ 
+-    // vertx
+-    function lib$es6$promise$asap$$useVertxTimer() {
+-      return function() {
+-        lib$es6$promise$asap$$vertxNext(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// vertx
++function useVertxTimer() {
++  return function () {
++    vertxNext(flush);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useMutationObserver() {
+-      var iterations = 0;
+-      var observer = new lib$es6$promise$asap$$BrowserMutationObserver(lib$es6$promise$asap$$flush);
+-      var node = document.createTextNode('');
+-      observer.observe(node, { characterData: true });
++function useMutationObserver() {
++  var iterations = 0;
++  var observer = new BrowserMutationObserver(flush);
++  var node = document.createTextNode('');
++  observer.observe(node, { characterData: true });
+ 
+-      return function() {
+-        node.data = (iterations = ++iterations % 2);
+-      };
+-    }
++  return function () {
++    node.data = iterations = ++iterations % 2;
++  };
++}
+ 
+-    // web worker
+-    function lib$es6$promise$asap$$useMessageChannel() {
+-      var channel = new MessageChannel();
+-      channel.port1.onmessage = lib$es6$promise$asap$$flush;
+-      return function () {
+-        channel.port2.postMessage(0);
+-      };
+-    }
++// web worker
++function useMessageChannel() {
++  var channel = new MessageChannel();
++  channel.port1.onmessage = flush;
++  return function () {
++    return channel.port2.postMessage(0);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useSetTimeout() {
+-      return function() {
+-        setTimeout(lib$es6$promise$asap$$flush, 1);
+-      };
+-    }
++function useSetTimeout() {
++  // Store setTimeout reference so es6-promise will be unaffected by
++  // other code modifying setTimeout (like sinon.useFakeTimers())
++  var globalSetTimeout = setTimeout;
++  return function () {
++    return globalSetTimeout(flush, 1);
++  };
++}
+ 
+-    var lib$es6$promise$asap$$queue = new Array(1000);
+-    function lib$es6$promise$asap$$flush() {
+-      for (var i = 0; i < lib$es6$promise$asap$$len; i+=2) {
+-        var callback = lib$es6$promise$asap$$queue[i];
+-        var arg = lib$es6$promise$asap$$queue[i+1];
++var queue = new Array(1000);
++function flush() {
++  for (var i = 0; i < len; i += 2) {
++    var callback = queue[i];
++    var arg = queue[i + 1];
+ 
+-        callback(arg);
++    callback(arg);
+ 
+-        lib$es6$promise$asap$$queue[i] = undefined;
+-        lib$es6$promise$asap$$queue[i+1] = undefined;
+-      }
++    queue[i] = undefined;
++    queue[i + 1] = undefined;
++  }
+ 
+-      lib$es6$promise$asap$$len = 0;
+-    }
++  len = 0;
++}
+ 
+-    function lib$es6$promise$asap$$attemptVertx() {
+-      try {
+-        var r = require;
+-        var vertx = r('vertx');
+-        lib$es6$promise$asap$$vertxNext = vertx.runOnLoop || vertx.runOnContext;
+-        return lib$es6$promise$asap$$useVertxTimer();
+-      } catch(e) {
+-        return lib$es6$promise$asap$$useSetTimeout();
+-      }
+-    }
++function attemptVertx() {
++  try {
++    var r = require;
++    var vertx = r('vertx');
++    vertxNext = vertx.runOnLoop || vertx.runOnContext;
++    return useVertxTimer();
++  } catch (e) {
++    return useSetTimeout();
++  }
++}
+ 
+-    var lib$es6$promise$asap$$scheduleFlush;
+-    // Decide what async method to use to triggering processing of queued callbacks:
+-    if (lib$es6$promise$asap$$isNode) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useNextTick();
+-    } else if (lib$es6$promise$asap$$BrowserMutationObserver) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMutationObserver();
+-    } else if (lib$es6$promise$asap$$isWorker) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMessageChannel();
+-    } else if (lib$es6$promise$asap$$browserWindow === undefined && typeof require === 'function') {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$attemptVertx();
+-    } else {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useSetTimeout();
+-    }
+-    function lib$es6$promise$then$$then(onFulfillment, onRejection) {
+-      var parent = this;
+-      var state = parent._state;
++var scheduleFlush = undefined;
++// Decide what async method to use to triggering processing of queued callbacks:
++if (isNode) {
++  scheduleFlush = useNextTick();
++} else if (BrowserMutationObserver) {
++  scheduleFlush = useMutationObserver();
++} else if (isWorker) {
++  scheduleFlush = useMessageChannel();
++} else if (browserWindow === undefined && typeof require === 'function') {
++  scheduleFlush = attemptVertx();
++} else {
++  scheduleFlush = useSetTimeout();
++}
+ 
+-      if (state === lib$es6$promise$$internal$$FULFILLED && !onFulfillment || state === lib$es6$promise$$internal$$REJECTED && !onRejection) {
+-        return this;
+-      }
++function then(onFulfillment, onRejection) {
++  var _arguments = arguments;
+ 
+-      var child = new this.constructor(lib$es6$promise$$internal$$noop);
+-      var result = parent._result;
++  var parent = this;
+ 
+-      if (state) {
+-        var callback = arguments[state - 1];
+-        lib$es6$promise$asap$$asap(function(){
+-          lib$es6$promise$$internal$$invokeCallback(state, child, callback, result);
+-        });
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection);
+-      }
++  var child = new this.constructor(noop);
+ 
+-      return child;
+-    }
+-    var lib$es6$promise$then$$default = lib$es6$promise$then$$then;
+-    function lib$es6$promise$promise$resolve$$resolve(object) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++  if (child[PROMISE_ID] === undefined) {
++    makePromise(child);
++  }
+ 
+-      if (object && typeof object === 'object' && object.constructor === Constructor) {
+-        return object;
+-      }
++  var _state = parent._state;
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$resolve(promise, object);
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$resolve$$default = lib$es6$promise$promise$resolve$$resolve;
++  if (_state) {
++    (function () {
++      var callback = _arguments[_state - 1];
++      asap(function () {
++        return invokeCallback(_state, child, callback, parent._result);
++      });
++    })();
++  } else {
++    subscribe(parent, child, onFulfillment, onRejection);
++  }
+ 
+-    function lib$es6$promise$$internal$$noop() {}
++  return child;
++}
+ 
+-    var lib$es6$promise$$internal$$PENDING   = void 0;
+-    var lib$es6$promise$$internal$$FULFILLED = 1;
+-    var lib$es6$promise$$internal$$REJECTED  = 2;
++/**
++  `Promise.resolve` returns a promise that will become resolved with the
++  passed `value`. It is shorthand for the following:
+ 
+-    var lib$es6$promise$$internal$$GET_THEN_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    resolve(1);
++  });
+ 
+-    function lib$es6$promise$$internal$$selfFulfillment() {
+-      return new TypeError("You cannot resolve a promise with itself");
+-    }
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
+ 
+-    function lib$es6$promise$$internal$$cannotReturnOwn() {
+-      return new TypeError('A promises callback cannot return that same promise.');
+-    }
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-    function lib$es6$promise$$internal$$getThen(promise) {
+-      try {
+-        return promise.then;
+-      } catch(error) {
+-        lib$es6$promise$$internal$$GET_THEN_ERROR.error = error;
+-        return lib$es6$promise$$internal$$GET_THEN_ERROR;
+-      }
+-    }
++  ```javascript
++  let promise = Promise.resolve(1);
+ 
+-    function lib$es6$promise$$internal$$tryThen(then, value, fulfillmentHandler, rejectionHandler) {
+-      try {
+-        then.call(value, fulfillmentHandler, rejectionHandler);
+-      } catch(e) {
+-        return e;
+-      }
+-    }
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
++
++  @method resolve
++  @static
++  @param {Any} value value that the returned promise will be resolved with
++  Useful for tooling.
++  @return {Promise} a promise that will become fulfilled with the given
++  `value`
++*/
++function resolve(object) {
++  /*jshint validthis:true */
++  var Constructor = this;
+ 
+-    function lib$es6$promise$$internal$$handleForeignThenable(promise, thenable, then) {
+-       lib$es6$promise$asap$$asap(function(promise) {
+-        var sealed = false;
+-        var error = lib$es6$promise$$internal$$tryThen(then, thenable, function(value) {
+-          if (sealed) { return; }
+-          sealed = true;
+-          if (thenable !== value) {
+-            lib$es6$promise$$internal$$resolve(promise, value);
+-          } else {
+-            lib$es6$promise$$internal$$fulfill(promise, value);
+-          }
+-        }, function(reason) {
+-          if (sealed) { return; }
+-          sealed = true;
++  if (object && typeof object === 'object' && object.constructor === Constructor) {
++    return object;
++  }
+ 
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        }, 'Settle: ' + (promise._label || ' unknown promise'));
++  var promise = new Constructor(noop);
++  _resolve(promise, object);
++  return promise;
++}
+ 
+-        if (!sealed && error) {
+-          sealed = true;
+-          lib$es6$promise$$internal$$reject(promise, error);
+-        }
+-      }, promise);
+-    }
++var PROMISE_ID = Math.random().toString(36).substring(16);
+ 
+-    function lib$es6$promise$$internal$$handleOwnThenable(promise, thenable) {
+-      if (thenable._state === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, thenable._result);
+-      } else if (thenable._state === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, thenable._result);
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(thenable, undefined, function(value) {
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      }
+-    }
++function noop() {}
+ 
+-    function lib$es6$promise$$internal$$handleMaybeThenable(promise, maybeThenable, then) {
+-      if (maybeThenable.constructor === promise.constructor &&
+-          then === lib$es6$promise$then$$default &&
+-          constructor.resolve === lib$es6$promise$promise$resolve$$default) {
+-        lib$es6$promise$$internal$$handleOwnThenable(promise, maybeThenable);
+-      } else {
+-        if (then === lib$es6$promise$$internal$$GET_THEN_ERROR) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$GET_THEN_ERROR.error);
+-        } else if (then === undefined) {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        } else if (lib$es6$promise$utils$$isFunction(then)) {
+-          lib$es6$promise$$internal$$handleForeignThenable(promise, maybeThenable, then);
+-        } else {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        }
+-      }
+-    }
++var PENDING = void 0;
++var FULFILLED = 1;
++var REJECTED = 2;
+ 
+-    function lib$es6$promise$$internal$$resolve(promise, value) {
+-      if (promise === value) {
+-        lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$selfFulfillment());
+-      } else if (lib$es6$promise$utils$$objectOrFunction(value)) {
+-        lib$es6$promise$$internal$$handleMaybeThenable(promise, value, lib$es6$promise$$internal$$getThen(value));
+-      } else {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      }
+-    }
++var GET_THEN_ERROR = new ErrorObject();
+ 
+-    function lib$es6$promise$$internal$$publishRejection(promise) {
+-      if (promise._onerror) {
+-        promise._onerror(promise._result);
+-      }
++function selfFulfillment() {
++  return new TypeError("You cannot resolve a promise with itself");
++}
+ 
+-      lib$es6$promise$$internal$$publish(promise);
+-    }
++function cannotReturnOwn() {
++  return new TypeError('A promises callback cannot return that same promise.');
++}
+ 
+-    function lib$es6$promise$$internal$$fulfill(promise, value) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
++function getThen(promise) {
++  try {
++    return promise.then;
++  } catch (error) {
++    GET_THEN_ERROR.error = error;
++    return GET_THEN_ERROR;
++  }
++}
+ 
+-      promise._result = value;
+-      promise._state = lib$es6$promise$$internal$$FULFILLED;
++function tryThen(then, value, fulfillmentHandler, rejectionHandler) {
++  try {
++    then.call(value, fulfillmentHandler, rejectionHandler);
++  } catch (e) {
++    return e;
++  }
++}
+ 
+-      if (promise._subscribers.length !== 0) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, promise);
++function handleForeignThenable(promise, thenable, then) {
++  asap(function (promise) {
++    var sealed = false;
++    var error = tryThen(then, thenable, function (value) {
++      if (sealed) {
++        return;
++      }
++      sealed = true;
++      if (thenable !== value) {
++        _resolve(promise, value);
++      } else {
++        fulfill(promise, value);
++      }
++    }, function (reason) {
++      if (sealed) {
++        return;
+       }
++      sealed = true;
++
++      _reject(promise, reason);
++    }, 'Settle: ' + (promise._label || ' unknown promise'));
++
++    if (!sealed && error) {
++      sealed = true;
++      _reject(promise, error);
+     }
++  }, promise);
++}
+ 
+-    function lib$es6$promise$$internal$$reject(promise, reason) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
+-      promise._state = lib$es6$promise$$internal$$REJECTED;
+-      promise._result = reason;
++function handleOwnThenable(promise, thenable) {
++  if (thenable._state === FULFILLED) {
++    fulfill(promise, thenable._result);
++  } else if (thenable._state === REJECTED) {
++    _reject(promise, thenable._result);
++  } else {
++    subscribe(thenable, undefined, function (value) {
++      return _resolve(promise, value);
++    }, function (reason) {
++      return _reject(promise, reason);
++    });
++  }
++}
+ 
+-      lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publishRejection, promise);
++function handleMaybeThenable(promise, maybeThenable, then$$) {
++  if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) {
++    handleOwnThenable(promise, maybeThenable);
++  } else {
++    if (then$$ === GET_THEN_ERROR) {
++      _reject(promise, GET_THEN_ERROR.error);
++    } else if (then$$ === undefined) {
++      fulfill(promise, maybeThenable);
++    } else if (isFunction(then$$)) {
++      handleForeignThenable(promise, maybeThenable, then$$);
++    } else {
++      fulfill(promise, maybeThenable);
+     }
++  }
++}
++
++function _resolve(promise, value) {
++  if (promise === value) {
++    _reject(promise, selfFulfillment());
++  } else if (objectOrFunction(value)) {
++    handleMaybeThenable(promise, value, getThen(value));
++  } else {
++    fulfill(promise, value);
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection) {
+-      var subscribers = parent._subscribers;
+-      var length = subscribers.length;
++function publishRejection(promise) {
++  if (promise._onerror) {
++    promise._onerror(promise._result);
++  }
++
++  publish(promise);
++}
+ 
+-      parent._onerror = null;
++function fulfill(promise, value) {
++  if (promise._state !== PENDING) {
++    return;
++  }
+ 
+-      subscribers[length] = child;
+-      subscribers[length + lib$es6$promise$$internal$$FULFILLED] = onFulfillment;
+-      subscribers[length + lib$es6$promise$$internal$$REJECTED]  = onRejection;
++  promise._result = value;
++  promise._state = FULFILLED;
+ 
+-      if (length === 0 && parent._state) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, parent);
+-      }
+-    }
++  if (promise._subscribers.length !== 0) {
++    asap(publish, promise);
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$publish(promise) {
+-      var subscribers = promise._subscribers;
+-      var settled = promise._state;
++function _reject(promise, reason) {
++  if (promise._state !== PENDING) {
++    return;
++  }
++  promise._state = REJECTED;
++  promise._result = reason;
+ 
+-      if (subscribers.length === 0) { return; }
++  asap(publishRejection, promise);
++}
+ 
+-      var child, callback, detail = promise._result;
++function subscribe(parent, child, onFulfillment, onRejection) {
++  var _subscribers = parent._subscribers;
++  var length = _subscribers.length;
+ 
+-      for (var i = 0; i < subscribers.length; i += 3) {
+-        child = subscribers[i];
+-        callback = subscribers[i + settled];
++  parent._onerror = null;
+ 
+-        if (child) {
+-          lib$es6$promise$$internal$$invokeCallback(settled, child, callback, detail);
+-        } else {
+-          callback(detail);
+-        }
+-      }
++  _subscribers[length] = child;
++  _subscribers[length + FULFILLED] = onFulfillment;
++  _subscribers[length + REJECTED] = onRejection;
+ 
+-      promise._subscribers.length = 0;
+-    }
++  if (length === 0 && parent._state) {
++    asap(publish, parent);
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$ErrorObject() {
+-      this.error = null;
+-    }
++function publish(promise) {
++  var subscribers = promise._subscribers;
++  var settled = promise._state;
++
++  if (subscribers.length === 0) {
++    return;
++  }
+ 
+-    var lib$es6$promise$$internal$$TRY_CATCH_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++  var child = undefined,
++      callback = undefined,
++      detail = promise._result;
+ 
+-    function lib$es6$promise$$internal$$tryCatch(callback, detail) {
+-      try {
+-        return callback(detail);
+-      } catch(e) {
+-        lib$es6$promise$$internal$$TRY_CATCH_ERROR.error = e;
+-        return lib$es6$promise$$internal$$TRY_CATCH_ERROR;
+-      }
++  for (var i = 0; i < subscribers.length; i += 3) {
++    child = subscribers[i];
++    callback = subscribers[i + settled];
++
++    if (child) {
++      invokeCallback(settled, child, callback, detail);
++    } else {
++      callback(detail);
+     }
++  }
+ 
+-    function lib$es6$promise$$internal$$invokeCallback(settled, promise, callback, detail) {
+-      var hasCallback = lib$es6$promise$utils$$isFunction(callback),
+-          value, error, succeeded, failed;
++  promise._subscribers.length = 0;
++}
+ 
+-      if (hasCallback) {
+-        value = lib$es6$promise$$internal$$tryCatch(callback, detail);
++function ErrorObject() {
++  this.error = null;
++}
+ 
+-        if (value === lib$es6$promise$$internal$$TRY_CATCH_ERROR) {
+-          failed = true;
+-          error = value.error;
+-          value = null;
+-        } else {
+-          succeeded = true;
+-        }
++var TRY_CATCH_ERROR = new ErrorObject();
+ 
+-        if (promise === value) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$cannotReturnOwn());
+-          return;
+-        }
++function tryCatch(callback, detail) {
++  try {
++    return callback(detail);
++  } catch (e) {
++    TRY_CATCH_ERROR.error = e;
++    return TRY_CATCH_ERROR;
++  }
++}
+ 
+-      } else {
+-        value = detail;
+-        succeeded = true;
+-      }
++function invokeCallback(settled, promise, callback, detail) {
++  var hasCallback = isFunction(callback),
++      value = undefined,
++      error = undefined,
++      succeeded = undefined,
++      failed = undefined;
+ 
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) {
+-        // noop
+-      } else if (hasCallback && succeeded) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      } else if (failed) {
+-        lib$es6$promise$$internal$$reject(promise, error);
+-      } else if (settled === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      } else if (settled === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, value);
+-      }
++  if (hasCallback) {
++    value = tryCatch(callback, detail);
++
++    if (value === TRY_CATCH_ERROR) {
++      failed = true;
++      error = value.error;
++      value = null;
++    } else {
++      succeeded = true;
+     }
+ 
+-    function lib$es6$promise$$internal$$initializePromise(promise, resolver) {
+-      try {
+-        resolver(function resolvePromise(value){
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function rejectPromise(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      } catch(e) {
+-        lib$es6$promise$$internal$$reject(promise, e);
+-      }
++    if (promise === value) {
++      _reject(promise, cannotReturnOwn());
++      return;
+     }
++  } else {
++    value = detail;
++    succeeded = true;
++  }
+ 
+-    function lib$es6$promise$promise$all$$all(entries) {
+-      return new lib$es6$promise$enumerator$$default(this, entries).promise;
++  if (promise._state !== PENDING) {
++    // noop
++  } else if (hasCallback && succeeded) {
++      _resolve(promise, value);
++    } else if (failed) {
++      _reject(promise, error);
++    } else if (settled === FULFILLED) {
++      fulfill(promise, value);
++    } else if (settled === REJECTED) {
++      _reject(promise, value);
+     }
+-    var lib$es6$promise$promise$all$$default = lib$es6$promise$promise$all$$all;
+-    function lib$es6$promise$promise$race$$race(entries) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++}
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
++function initializePromise(promise, resolver) {
++  try {
++    resolver(function resolvePromise(value) {
++      _resolve(promise, value);
++    }, function rejectPromise(reason) {
++      _reject(promise, reason);
++    });
++  } catch (e) {
++    _reject(promise, e);
++  }
++}
+ 
+-      if (!lib$es6$promise$utils$$isArray(entries)) {
+-        lib$es6$promise$$internal$$reject(promise, new TypeError('You must pass an array to race.'));
+-        return promise;
+-      }
++var id = 0;
++function nextId() {
++  return id++;
++}
+ 
+-      var length = entries.length;
++function makePromise(promise) {
++  promise[PROMISE_ID] = id++;
++  promise._state = undefined;
++  promise._result = undefined;
++  promise._subscribers = [];
++}
+ 
+-      function onFulfillment(value) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      }
++function Enumerator(Constructor, input) {
++  this._instanceConstructor = Constructor;
++  this.promise = new Constructor(noop);
+ 
+-      function onRejection(reason) {
+-        lib$es6$promise$$internal$$reject(promise, reason);
+-      }
++  if (!this.promise[PROMISE_ID]) {
++    makePromise(this.promise);
++  }
+ 
+-      for (var i = 0; promise._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        lib$es6$promise$$internal$$subscribe(Constructor.resolve(entries[i]), undefined, onFulfillment, onRejection);
+-      }
++  if (isArray(input)) {
++    this._input = input;
++    this.length = input.length;
++    this._remaining = input.length;
+ 
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$race$$default = lib$es6$promise$promise$race$$race;
+-    function lib$es6$promise$promise$reject$$reject(reason) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$reject(promise, reason);
+-      return promise;
++    this._result = new Array(this.length);
++
++    if (this.length === 0) {
++      fulfill(this.promise, this._result);
++    } else {
++      this.length = this.length || 0;
++      this._enumerate();
++      if (this._remaining === 0) {
++        fulfill(this.promise, this._result);
++      }
+     }
+-    var lib$es6$promise$promise$reject$$default = lib$es6$promise$promise$reject$$reject;
++  } else {
++    _reject(this.promise, validationError());
++  }
++}
++
++function validationError() {
++  return new Error('Array Methods must be provided an Array');
++};
++
++Enumerator.prototype._enumerate = function () {
++  var length = this.length;
++  var _input = this._input;
++
++  for (var i = 0; this._state === PENDING && i < length; i++) {
++    this._eachEntry(_input[i], i);
++  }
++};
++
++Enumerator.prototype._eachEntry = function (entry, i) {
++  var c = this._instanceConstructor;
++  var resolve$$ = c.resolve;
+ 
+-    var lib$es6$promise$promise$$counter = 0;
++  if (resolve$$ === resolve) {
++    var _then = getThen(entry);
+ 
+-    function lib$es6$promise$promise$$needsResolver() {
+-      throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++    if (_then === then && entry._state !== PENDING) {
++      this._settledAt(entry._state, i, entry._result);
++    } else if (typeof _then !== 'function') {
++      this._remaining--;
++      this._result[i] = entry;
++    } else if (c === Promise) {
++      var promise = new c(noop);
++      handleMaybeThenable(promise, entry, _then);
++      this._willSettleAt(promise, i);
++    } else {
++      this._willSettleAt(new c(function (resolve$$) {
++        return resolve$$(entry);
++      }), i);
+     }
++  } else {
++    this._willSettleAt(resolve$$(entry), i);
++  }
++};
++
++Enumerator.prototype._settledAt = function (state, i, value) {
++  var promise = this.promise;
++
++  if (promise._state === PENDING) {
++    this._remaining--;
+ 
+-    function lib$es6$promise$promise$$needsNew() {
+-      throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++    if (state === REJECTED) {
++      _reject(promise, value);
++    } else {
++      this._result[i] = value;
+     }
++  }
+ 
+-    var lib$es6$promise$promise$$default = lib$es6$promise$promise$$Promise;
+-    /**
+-      Promise objects represent the eventual result of an asynchronous operation. The
+-      primary way of interacting with a promise is through its `then` method, which
+-      registers callbacks to receive either a promise's eventual value or the reason
+-      why the promise cannot be fulfilled.
++  if (this._remaining === 0) {
++    fulfill(promise, this._result);
++  }
++};
+ 
+-      Terminology
+-      -----------
++Enumerator.prototype._willSettleAt = function (promise, i) {
++  var enumerator = this;
+ 
+-      - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
+-      - `thenable` is an object or function that defines a `then` method.
+-      - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
+-      - `exception` is a value that is thrown using the throw statement.
+-      - `reason` is a value that indicates why a promise was rejected.
+-      - `settled` the final resting state of a promise, fulfilled or rejected.
++  subscribe(promise, undefined, function (value) {
++    return enumerator._settledAt(FULFILLED, i, value);
++  }, function (reason) {
++    return enumerator._settledAt(REJECTED, i, reason);
++  });
++};
+ 
+-      A promise can be in one of three states: pending, fulfilled, or rejected.
++/**
++  `Promise.all` accepts an array of promises, and returns a new promise which
++  is fulfilled with an array of fulfillment values for the passed promises, or
++  rejected with the reason of the first passed promise to be rejected. It casts all
++  elements of the passed iterable to promises as it runs this algorithm.
+ 
+-      Promises that are fulfilled have a fulfillment value and are in the fulfilled
+-      state.  Promises that are rejected have a rejection reason and are in the
+-      rejected state.  A fulfillment value is never a thenable.
++  Example:
+ 
+-      Promises can also be said to *resolve* a value.  If this value is also a
+-      promise, then the original promise's settled state will match the value's
+-      settled state.  So a promise that *resolves* a promise that rejects will
+-      itself reject, and a promise that *resolves* a promise that fulfills will
+-      itself fulfill.
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = resolve(2);
++  let promise3 = resolve(3);
++  let promises = [ promise1, promise2, promise3 ];
+ 
++  Promise.all(promises).then(function(array){
++    // The array here would be [ 1, 2, 3 ];
++  });
++  ```
+ 
+-      Basic Usage:
+-      ------------
++  If any of the `promises` given to `all` are rejected, the first promise
++  that is rejected will be given as an argument to the returned promises's
++  rejection handler. For example:
+ 
+-      ```js
+-      var promise = new Promise(function(resolve, reject) {
+-        // on success
+-        resolve(value);
++  Example:
+ 
+-        // on failure
+-        reject(reason);
+-      });
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = reject(new Error("2"));
++  let promise3 = reject(new Error("3"));
++  let promises = [ promise1, promise2, promise3 ];
+ 
+-      promise.then(function(value) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++  Promise.all(promises).then(function(array){
++    // Code here never runs because there are rejected promises!
++  }, function(error) {
++    // error.message === "2"
++  });
++  ```
++
++  @method all
++  @static
++  @param {Array} entries array of promises
++  @param {String} label optional string for labeling the promise.
++  Useful for tooling.
++  @return {Promise} promise that is fulfilled when all `promises` have been
++  fulfilled, or rejected if any of them become rejected.
++  @static
++*/
++function all(entries) {
++  return new Enumerator(this, entries).promise;
++}
++
++/**
++  `Promise.race` returns a new promise which is settled in the same way as the
++  first passed promise to settle.
+ 
+-      Advanced Usage:
+-      ---------------
++  Example:
+ 
+-      Promises shine when abstracting away asynchronous interactions such as
+-      `XMLHttpRequest`s.
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-      ```js
+-      function getJSON(url) {
+-        return new Promise(function(resolve, reject){
+-          var xhr = new XMLHttpRequest();
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 2');
++    }, 100);
++  });
+ 
+-          xhr.open('GET', url);
+-          xhr.onreadystatechange = handler;
+-          xhr.responseType = 'json';
+-          xhr.setRequestHeader('Accept', 'application/json');
+-          xhr.send();
++  Promise.race([promise1, promise2]).then(function(result){
++    // result === 'promise 2' because it was resolved before promise1
++    // was resolved.
++  });
++  ```
++
++  `Promise.race` is deterministic in that only the state of the first
++  settled promise matters. For example, even if other promises given to the
++  `promises` array argument are resolved, but the first settled promise has
++  become rejected before the other promises became fulfilled, the returned
++  promise will become rejected:
++
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-          function handler() {
+-            if (this.readyState === this.DONE) {
+-              if (this.status === 200) {
+-                resolve(this.response);
+-              } else {
+-                reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
+-              }
+-            }
+-          };
+-        });
+-      }
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      reject(new Error('promise 2'));
++    }, 100);
++  });
+ 
+-      getJSON('/posts.json').then(function(json) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++  Promise.race([promise1, promise2]).then(function(result){
++    // Code here never runs
++  }, function(reason){
++    // reason.message === 'promise 2' because promise 2 became rejected before
++    // promise 1 became fulfilled
++  });
++  ```
+ 
+-      Unlike callbacks, promises are great composable primitives.
++  An example real-world use case is implementing timeouts:
+ 
+-      ```js
+-      Promise.all([
+-        getJSON('/posts'),
+-        getJSON('/comments')
+-      ]).then(function(values){
+-        values[0] // => postsJSON
+-        values[1] // => commentsJSON
++  ```javascript
++  Promise.race([ajax('foo.json'), timeout(5000)])
++  ```
+ 
+-        return values;
+-      });
+-      ```
+-
+-      @class Promise
+-      @param {function} resolver
+-      Useful for tooling.
+-      @constructor
+-    */
+-    function lib$es6$promise$promise$$Promise(resolver) {
+-      this._id = lib$es6$promise$promise$$counter++;
+-      this._state = undefined;
+-      this._result = undefined;
+-      this._subscribers = [];
+-
+-      if (lib$es6$promise$$internal$$noop !== resolver) {
+-        typeof resolver !== 'function' && lib$es6$promise$promise$$needsResolver();
+-        this instanceof lib$es6$promise$promise$$Promise ? lib$es6$promise$$internal$$initializePromise(this, resolver) : lib$es6$promise$promise$$needsNew();
++  @method race
++  @static
++  @param {Array} promises array of promises to observe
++  Useful for tooling.
++  @return {Promise} a promise which settles in the same way as the first passed
++  promise to settle.
++*/
++function race(entries) {
++  /*jshint validthis:true */
++  var Constructor = this;
++
++  if (!isArray(entries)) {
++    return new Constructor(function (_, reject) {
++      return reject(new TypeError('You must pass an array to race.'));
++    });
++  } else {
++    return new Constructor(function (resolve, reject) {
++      var length = entries.length;
++      for (var i = 0; i < length; i++) {
++        Constructor.resolve(entries[i]).then(resolve, reject);
+       }
+-    }
++    });
++  }
++}
+ 
+-    lib$es6$promise$promise$$Promise.all = lib$es6$promise$promise$all$$default;
+-    lib$es6$promise$promise$$Promise.race = lib$es6$promise$promise$race$$default;
+-    lib$es6$promise$promise$$Promise.resolve = lib$es6$promise$promise$resolve$$default;
+-    lib$es6$promise$promise$$Promise.reject = lib$es6$promise$promise$reject$$default;
+-    lib$es6$promise$promise$$Promise._setScheduler = lib$es6$promise$asap$$setScheduler;
+-    lib$es6$promise$promise$$Promise._setAsap = lib$es6$promise$asap$$setAsap;
+-    lib$es6$promise$promise$$Promise._asap = lib$es6$promise$asap$$asap;
++/**
++  `Promise.reject` returns a promise rejected with the passed `reason`.
++  It is shorthand for the following:
+ 
+-    lib$es6$promise$promise$$Promise.prototype = {
+-      constructor: lib$es6$promise$promise$$Promise,
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    reject(new Error('WHOOPS'));
++  });
+ 
+-    /**
+-      The primary way of interacting with a promise is through its `then` method,
+-      which registers callbacks to receive either a promise's eventual value or the
+-      reason why the promise cannot be fulfilled.
+-
+-      ```js
+-      findUser().then(function(user){
+-        // user is available
+-      }, function(reason){
+-        // user is unavailable, and you are given the reason why
+-      });
+-      ```
+-
+-      Chaining
+-      --------
+-
+-      The return value of `then` is itself a promise.  This second, 'downstream'
+-      promise is resolved with the return value of the first promise's fulfillment
+-      or rejection handler, or rejected if the handler throws an exception.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return user.name;
+-      }, function (reason) {
+-        return 'default name';
+-      }).then(function (userName) {
+-        // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
+-        // will be `'default name'`
+-      });
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      findUser().then(function (user) {
+-        throw new Error('Found user, but still unhappy');
+-      }, function (reason) {
+-        throw new Error('`findUser` rejected and we're unhappy');
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
+-        // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
+-      });
+-      ```
+-      If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        throw new PedagogicalException('Upstream error');
+-      }).then(function (value) {
+-        // never reached
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // The `PedgagocialException` is propagated all the way down to here
+-      });
+-      ```
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-      Assimilation
+-      ------------
++  ```javascript
++  let promise = Promise.reject(new Error('WHOOPS'));
+ 
+-      Sometimes the value you want to propagate to a downstream promise can only be
+-      retrieved asynchronously. This can be achieved by returning a promise in the
+-      fulfillment or rejection handler. The downstream promise will then be pending
+-      until the returned promise is settled. This is called *assimilation*.
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // The user's comments are now available
+-      });
+-      ```
++  @method reject
++  @static
++  @param {Any} reason value that the returned promise will be rejected with.
++  Useful for tooling.
++  @return {Promise} a promise rejected with the given `reason`.
++*/
++function reject(reason) {
++  /*jshint validthis:true */
++  var Constructor = this;
++  var promise = new Constructor(noop);
++  _reject(promise, reason);
++  return promise;
++}
+ 
+-      If the assimliated promise rejects, then the downstream promise will also reject.
++function needsResolver() {
++  throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++}
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // If `findCommentsByAuthor` fulfills, we'll have the value here
+-      }, function (reason) {
+-        // If `findCommentsByAuthor` rejects, we'll have the reason here
+-      });
+-      ```
++function needsNew() {
++  throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++}
+ 
+-      Simple Example
+-      --------------
++/**
++  Promise objects represent the eventual result of an asynchronous operation. The
++  primary way of interacting with a promise is through its `then` method, which
++  registers callbacks to receive either a promise's eventual value or the reason
++  why the promise cannot be fulfilled.
+ 
+-      Synchronous Example
++  Terminology
++  -----------
+ 
+-      ```javascript
+-      var result;
++  - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
++  - `thenable` is an object or function that defines a `then` method.
++  - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
++  - `exception` is a value that is thrown using the throw statement.
++  - `reason` is a value that indicates why a promise was rejected.
++  - `settled` the final resting state of a promise, fulfilled or rejected.
+ 
+-      try {
+-        result = findResult();
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
++  A promise can be in one of three states: pending, fulfilled, or rejected.
+ 
+-      Errback Example
++  Promises that are fulfilled have a fulfillment value and are in the fulfilled
++  state.  Promises that are rejected have a rejection reason and are in the
++  rejected state.  A fulfillment value is never a thenable.
+ 
+-      ```js
+-      findResult(function(result, err){
+-        if (err) {
+-          // failure
+-        } else {
+-          // success
+-        }
+-      });
+-      ```
++  Promises can also be said to *resolve* a value.  If this value is also a
++  promise, then the original promise's settled state will match the value's
++  settled state.  So a promise that *resolves* a promise that rejects will
++  itself reject, and a promise that *resolves* a promise that fulfills will
++  itself fulfill.
+ 
+-      Promise Example;
+ 
+-      ```javascript
+-      findResult().then(function(result){
+-        // success
+-      }, function(reason){
+-        // failure
+-      });
+-      ```
++  Basic Usage:
++  ------------
++
++  ```js
++  let promise = new Promise(function(resolve, reject) {
++    // on success
++    resolve(value);
+ 
+-      Advanced Example
+-      --------------
++    // on failure
++    reject(reason);
++  });
+ 
+-      Synchronous Example
++  promise.then(function(value) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
+ 
+-      ```javascript
+-      var author, books;
++  Advanced Usage:
++  ---------------
+ 
+-      try {
+-        author = findAuthor();
+-        books  = findBooksByAuthor(author);
++  Promises shine when abstracting away asynchronous interactions such as
++  `XMLHttpRequest`s.
++
++  ```js
++  function getJSON(url) {
++    return new Promise(function(resolve, reject){
++      let xhr = new XMLHttpRequest();
++
++      xhr.open('GET', url);
++      xhr.onreadystatechange = handler;
++      xhr.responseType = 'json';
++      xhr.setRequestHeader('Accept', 'application/json');
++      xhr.send();
++
++      function handler() {
++        if (this.readyState === this.DONE) {
++          if (this.status === 200) {
++            resolve(this.response);
++          } else {
++            reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
++          }
++        }
++      };
++    });
++  }
++
++  getJSON('/posts.json').then(function(json) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
++
++  Unlike callbacks, promises are great composable primitives.
++
++  ```js
++  Promise.all([
++    getJSON('/posts'),
++    getJSON('/comments')
++  ]).then(function(values){
++    values[0] // => postsJSON
++    values[1] // => commentsJSON
++
++    return values;
++  });
++  ```
++
++  @class Promise
++  @param {function} resolver
++  Useful for tooling.
++  @constructor
++*/
++function Promise(resolver) {
++  this[PROMISE_ID] = nextId();
++  this._result = this._state = undefined;
++  this._subscribers = [];
++
++  if (noop !== resolver) {
++    typeof resolver !== 'function' && needsResolver();
++    this instanceof Promise ? initializePromise(this, resolver) : needsNew();
++  }
++}
++
++Promise.all = all;
++Promise.race = race;
++Promise.resolve = resolve;
++Promise.reject = reject;
++Promise._setScheduler = setScheduler;
++Promise._setAsap = setAsap;
++Promise._asap = asap;
++
++Promise.prototype = {
++  constructor: Promise,
++
++  /**
++    The primary way of interacting with a promise is through its `then` method,
++    which registers callbacks to receive either a promise's eventual value or the
++    reason why the promise cannot be fulfilled.
++  
++    ```js
++    findUser().then(function(user){
++      // user is available
++    }, function(reason){
++      // user is unavailable, and you are given the reason why
++    });
++    ```
++  
++    Chaining
++    --------
++  
++    The return value of `then` is itself a promise.  This second, 'downstream'
++    promise is resolved with the return value of the first promise's fulfillment
++    or rejection handler, or rejected if the handler throws an exception.
++  
++    ```js
++    findUser().then(function (user) {
++      return user.name;
++    }, function (reason) {
++      return 'default name';
++    }).then(function (userName) {
++      // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
++      // will be `'default name'`
++    });
++  
++    findUser().then(function (user) {
++      throw new Error('Found user, but still unhappy');
++    }, function (reason) {
++      throw new Error('`findUser` rejected and we're unhappy');
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
++      // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
++    });
++    ```
++    If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
++  
++    ```js
++    findUser().then(function (user) {
++      throw new PedagogicalException('Upstream error');
++    }).then(function (value) {
++      // never reached
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // The `PedgagocialException` is propagated all the way down to here
++    });
++    ```
++  
++    Assimilation
++    ------------
++  
++    Sometimes the value you want to propagate to a downstream promise can only be
++    retrieved asynchronously. This can be achieved by returning a promise in the
++    fulfillment or rejection handler. The downstream promise will then be pending
++    until the returned promise is settled. This is called *assimilation*.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // The user's comments are now available
++    });
++    ```
++  
++    If the assimliated promise rejects, then the downstream promise will also reject.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // If `findCommentsByAuthor` fulfills, we'll have the value here
++    }, function (reason) {
++      // If `findCommentsByAuthor` rejects, we'll have the reason here
++    });
++    ```
++  
++    Simple Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let result;
++  
++    try {
++      result = findResult();
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++    findResult(function(result, err){
++      if (err) {
++        // failure
++      } else {
+         // success
+-      } catch(reason) {
++      }
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findResult().then(function(result){
++      // success
++    }, function(reason){
++      // failure
++    });
++    ```
++  
++    Advanced Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let author, books;
++  
++    try {
++      author = findAuthor();
++      books  = findBooksByAuthor(author);
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++  
++    function foundBooks(books) {
++  
++    }
++  
++    function failure(reason) {
++  
++    }
++  
++    findAuthor(function(author, err){
++      if (err) {
++        failure(err);
+         // failure
++      } else {
++        try {
++          findBoooksByAuthor(author, function(books, err) {
++            if (err) {
++              failure(err);
++            } else {
++              try {
++                foundBooks(books);
++              } catch(reason) {
++                failure(reason);
++              }
++            }
++          });
++        } catch(error) {
++          failure(err);
++        }
++        // success
+       }
+-      ```
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findAuthor().
++      then(findBooksByAuthor).
++      then(function(books){
++        // found books
++    }).catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method then
++    @param {Function} onFulfilled
++    @param {Function} onRejected
++    Useful for tooling.
++    @return {Promise}
++  */
++  then: then,
++
++  /**
++    `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
++    as the catch block of a try/catch statement.
++  
++    ```js
++    function findAuthor(){
++      throw new Error('couldn't find that author');
++    }
++  
++    // synchronous
++    try {
++      findAuthor();
++    } catch(reason) {
++      // something went wrong
++    }
++  
++    // async with promises
++    findAuthor().catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method catch
++    @param {Function} onRejection
++    Useful for tooling.
++    @return {Promise}
++  */
++  'catch': function _catch(onRejection) {
++    return this.then(null, onRejection);
++  }
++};
+ 
+-      Errback Example
++function polyfill() {
++    var local = undefined;
+ 
+-      ```js
++    if (typeof global !== 'undefined') {
++        local = global;
++    } else if (typeof self !== 'undefined') {
++        local = self;
++    } else {
++        try {
++            local = Function('return this')();
++        } catch (e) {
++            throw new Error('polyfill failed because global object is unavailable in this environment');
++        }
++    }
+ 
+-      function foundBooks(books) {
++    var P = local.Promise;
+ 
+-      }
++    if (P) {
++        var promiseToString = null;
++        try {
++            promiseToString = Object.prototype.toString.call(P.resolve());
++        } catch (e) {
++            // silently ignored
++        }
+ 
+-      function failure(reason) {
++        if (promiseToString === '[object Promise]' && !P.cast) {
++            return;
++        }
++    }
+ 
+-      }
++    local.Promise = Promise;
++}
+ 
+-      findAuthor(function(author, err){
+-        if (err) {
+-          failure(err);
+-          // failure
+-        } else {
+-          try {
+-            findBoooksByAuthor(author, function(books, err) {
+-              if (err) {
+-                failure(err);
+-              } else {
+-                try {
+-                  foundBooks(books);
+-                } catch(reason) {
+-                  failure(reason);
+-                }
+-              }
+-            });
+-          } catch(error) {
+-            failure(err);
+-          }
+-          // success
+-        }
+-      });
+-      ```
++polyfill();
++// Strange compat..
++Promise.polyfill = polyfill;
++Promise.Promise = Promise;
+ 
+-      Promise Example;
++return Promise;
+ 
+-      ```javascript
+-      findAuthor().
+-        then(findBooksByAuthor).
+-        then(function(books){
+-          // found books
+-      }).catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
++})));
+ 
+-      @method then
+-      @param {Function} onFulfilled
+-      @param {Function} onRejected
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      then: lib$es6$promise$then$$default,
++}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"_process":13}],10:[function(require,module,exports){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-    /**
+-      `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
+-      as the catch block of a try/catch statement.
++function EventEmitter() {
++  this._events = this._events || {};
++  this._maxListeners = this._maxListeners || undefined;
++}
++module.exports = EventEmitter;
+ 
+-      ```js
+-      function findAuthor(){
+-        throw new Error('couldn't find that author');
+-      }
++// Backwards-compat with node 0.10.x
++EventEmitter.EventEmitter = EventEmitter;
+ 
+-      // synchronous
+-      try {
+-        findAuthor();
+-      } catch(reason) {
+-        // something went wrong
+-      }
++EventEmitter.prototype._events = undefined;
++EventEmitter.prototype._maxListeners = undefined;
+ 
+-      // async with promises
+-      findAuthor().catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
+-
+-      @method catch
+-      @param {Function} onRejection
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      'catch': function(onRejection) {
+-        return this.then(null, onRejection);
+-      }
+-    };
+-    var lib$es6$promise$enumerator$$default = lib$es6$promise$enumerator$$Enumerator;
+-    function lib$es6$promise$enumerator$$Enumerator(Constructor, input) {
+-      this._instanceConstructor = Constructor;
+-      this.promise = new Constructor(lib$es6$promise$$internal$$noop);
++// By default EventEmitters will print a warning if more than 10 listeners are
++// added to it. This is a useful default which helps finding memory leaks.
++EventEmitter.defaultMaxListeners = 10;
++
++// Obviously not all Emitters should be limited to 10. This function allows
++// that to be increased. Set to zero for unlimited.
++EventEmitter.prototype.setMaxListeners = function(n) {
++  if (!isNumber(n) || n < 0 || isNaN(n))
++    throw TypeError('n must be a positive number');
++  this._maxListeners = n;
++  return this;
++};
+ 
+-      if (Array.isArray(input)) {
+-        this._input     = input;
+-        this.length     = input.length;
+-        this._remaining = input.length;
++EventEmitter.prototype.emit = function(type) {
++  var er, handler, len, args, i, listeners;
+ 
+-        this._result = new Array(this.length);
++  if (!this._events)
++    this._events = {};
+ 
+-        if (this.length === 0) {
+-          lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-        } else {
+-          this.length = this.length || 0;
+-          this._enumerate();
+-          if (this._remaining === 0) {
+-            lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-          }
+-        }
++  // If there is no 'error' event listener then throw.
++  if (type === 'error') {
++    if (!this._events.error ||
++        (isObject(this._events.error) && !this._events.error.length)) {
++      er = arguments[1];
++      if (er instanceof Error) {
++        throw er; // Unhandled 'error' event
+       } else {
+-        lib$es6$promise$$internal$$reject(this.promise, this._validationError());
++        // At least give some kind of context to the user
++        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
++        err.context = er;
++        throw err;
+       }
+     }
++  }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._validationError = function() {
+-      return new Error('Array Methods must be provided an Array');
+-    };
++  handler = this._events[type];
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._enumerate = function() {
+-      var length  = this.length;
+-      var input   = this._input;
++  if (isUndefined(handler))
++    return false;
+ 
+-      for (var i = 0; this._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        this._eachEntry(input[i], i);
+-      }
+-    };
++  if (isFunction(handler)) {
++    switch (arguments.length) {
++      // fast cases
++      case 1:
++        handler.call(this);
++        break;
++      case 2:
++        handler.call(this, arguments[1]);
++        break;
++      case 3:
++        handler.call(this, arguments[1], arguments[2]);
++        break;
++      // slower
++      default:
++        args = Array.prototype.slice.call(arguments, 1);
++        handler.apply(this, args);
++    }
++  } else if (isObject(handler)) {
++    args = Array.prototype.slice.call(arguments, 1);
++    listeners = handler.slice();
++    len = listeners.length;
++    for (i = 0; i < len; i++)
++      listeners[i].apply(this, args);
++  }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._eachEntry = function(entry, i) {
+-      var c = this._instanceConstructor;
+-      var resolve = c.resolve;
++  return true;
++};
++
++EventEmitter.prototype.addListener = function(type, listener) {
++  var m;
+ 
+-      if (resolve === lib$es6$promise$promise$resolve$$default) {
+-        var then = lib$es6$promise$$internal$$getThen(entry);
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-        if (then === lib$es6$promise$then$$default &&
+-            entry._state !== lib$es6$promise$$internal$$PENDING) {
+-          this._settledAt(entry._state, i, entry._result);
+-        } else if (typeof then !== 'function') {
+-          this._remaining--;
+-          this._result[i] = entry;
+-        } else if (c === lib$es6$promise$promise$$default) {
+-          var promise = new c(lib$es6$promise$$internal$$noop);
+-          lib$es6$promise$$internal$$handleMaybeThenable(promise, entry, then);
+-          this._willSettleAt(promise, i);
+-        } else {
+-          this._willSettleAt(new c(function(resolve) { resolve(entry); }), i);
+-        }
+-      } else {
+-        this._willSettleAt(resolve(entry), i);
+-      }
+-    };
++  if (!this._events)
++    this._events = {};
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._settledAt = function(state, i, value) {
+-      var promise = this.promise;
++  // To avoid recursion in the case that type === "newListener"! Before
++  // adding it to the listeners, first emit "newListener".
++  if (this._events.newListener)
++    this.emit('newListener', type,
++              isFunction(listener.listener) ?
++              listener.listener : listener);
+ 
+-      if (promise._state === lib$es6$promise$$internal$$PENDING) {
+-        this._remaining--;
++  if (!this._events[type])
++    // Optimize the case of one listener. Don't need the extra array object.
++    this._events[type] = listener;
++  else if (isObject(this._events[type]))
++    // If we've already got an array, just append.
++    this._events[type].push(listener);
++  else
++    // Adding the second element, need to change to array.
++    this._events[type] = [this._events[type], listener];
+ 
+-        if (state === lib$es6$promise$$internal$$REJECTED) {
+-          lib$es6$promise$$internal$$reject(promise, value);
+-        } else {
+-          this._result[i] = value;
+-        }
+-      }
++  // Check for listener leak
++  if (isObject(this._events[type]) && !this._events[type].warned) {
++    if (!isUndefined(this._maxListeners)) {
++      m = this._maxListeners;
++    } else {
++      m = EventEmitter.defaultMaxListeners;
++    }
+ 
+-      if (this._remaining === 0) {
+-        lib$es6$promise$$internal$$fulfill(promise, this._result);
++    if (m && m > 0 && this._events[type].length > m) {
++      this._events[type].warned = true;
++      console.error('(node) warning: possible EventEmitter memory ' +
++                    'leak detected. %d listeners added. ' +
++                    'Use emitter.setMaxListeners() to increase limit.',
++                    this._events[type].length);
++      if (typeof console.trace === 'function') {
++        // not supported in IE 10
++        console.trace();
+       }
+-    };
++    }
++  }
++
++  return this;
++};
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._willSettleAt = function(promise, i) {
+-      var enumerator = this;
++EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+ 
+-      lib$es6$promise$$internal$$subscribe(promise, undefined, function(value) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$FULFILLED, i, value);
+-      }, function(reason) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$REJECTED, i, reason);
+-      });
+-    };
+-    function lib$es6$promise$polyfill$$polyfill() {
+-      var local;
++EventEmitter.prototype.once = function(type, listener) {
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-      if (typeof global !== 'undefined') {
+-          local = global;
+-      } else if (typeof self !== 'undefined') {
+-          local = self;
+-      } else {
+-          try {
+-              local = Function('return this')();
+-          } catch (e) {
+-              throw new Error('polyfill failed because global object is unavailable in this environment');
+-          }
+-      }
++  var fired = false;
+ 
+-      var P = local.Promise;
++  function g() {
++    this.removeListener(type, g);
+ 
+-      if (P && Object.prototype.toString.call(P.resolve()) === '[object Promise]' && !P.cast) {
+-        return;
++    if (!fired) {
++      fired = true;
++      listener.apply(this, arguments);
++    }
++  }
++
++  g.listener = listener;
++  this.on(type, g);
++
++  return this;
++};
++
++// emits a 'removeListener' event iff the listener was removed
++EventEmitter.prototype.removeListener = function(type, listener) {
++  var list, position, length, i;
++
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
++
++  if (!this._events || !this._events[type])
++    return this;
++
++  list = this._events[type];
++  length = list.length;
++  position = -1;
++
++  if (list === listener ||
++      (isFunction(list.listener) && list.listener === listener)) {
++    delete this._events[type];
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
++
++  } else if (isObject(list)) {
++    for (i = length; i-- > 0;) {
++      if (list[i] === listener ||
++          (list[i].listener && list[i].listener === listener)) {
++        position = i;
++        break;
+       }
++    }
++
++    if (position < 0)
++      return this;
+ 
+-      local.Promise = lib$es6$promise$promise$$default;
++    if (list.length === 1) {
++      list.length = 0;
++      delete this._events[type];
++    } else {
++      list.splice(position, 1);
+     }
+-    var lib$es6$promise$polyfill$$default = lib$es6$promise$polyfill$$polyfill;
+ 
+-    var lib$es6$promise$umd$$ES6Promise = {
+-      'Promise': lib$es6$promise$promise$$default,
+-      'polyfill': lib$es6$promise$polyfill$$default
+-    };
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
++  }
++
++  return this;
++};
++
++EventEmitter.prototype.removeAllListeners = function(type) {
++  var key, listeners;
++
++  if (!this._events)
++    return this;
++
++  // not listening for removeListener, no need to emit
++  if (!this._events.removeListener) {
++    if (arguments.length === 0)
++      this._events = {};
++    else if (this._events[type])
++      delete this._events[type];
++    return this;
++  }
+ 
+-    /* global define:true module:true window: true */
+-    if (typeof define === 'function' && define['amd']) {
+-      define(function() { return lib$es6$promise$umd$$ES6Promise; });
+-    } else if (typeof module !== 'undefined' && module['exports']) {
+-      module['exports'] = lib$es6$promise$umd$$ES6Promise;
+-    } else if (typeof this !== 'undefined') {
+-      this['ES6Promise'] = lib$es6$promise$umd$$ES6Promise;
++  // emit removeListener for all listeners on all events
++  if (arguments.length === 0) {
++    for (key in this._events) {
++      if (key === 'removeListener') continue;
++      this.removeAllListeners(key);
+     }
++    this.removeAllListeners('removeListener');
++    this._events = {};
++    return this;
++  }
+ 
+-    lib$es6$promise$polyfill$$default();
+-}).call(this);
++  listeners = this._events[type];
++
++  if (isFunction(listeners)) {
++    this.removeListener(type, listeners);
++  } else if (listeners) {
++    // LIFO order
++    while (listeners.length)
++      this.removeListener(type, listeners[listeners.length - 1]);
++  }
++  delete this._events[type];
+ 
++  return this;
++};
+ 
+-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"_process":8}],12:[function(require,module,exports){
++EventEmitter.prototype.listeners = function(type) {
++  var ret;
++  if (!this._events || !this._events[type])
++    ret = [];
++  else if (isFunction(this._events[type]))
++    ret = [this._events[type]];
++  else
++    ret = this._events[type].slice();
++  return ret;
++};
++
++EventEmitter.prototype.listenerCount = function(type) {
++  if (this._events) {
++    var evlistener = this._events[type];
++
++    if (isFunction(evlistener))
++      return 1;
++    else if (evlistener)
++      return evlistener.length;
++  }
++  return 0;
++};
++
++EventEmitter.listenerCount = function(emitter, type) {
++  return emitter.listenerCount(type);
++};
++
++function isFunction(arg) {
++  return typeof arg === 'function';
++}
++
++function isNumber(arg) {
++  return typeof arg === 'number';
++}
++
++function isObject(arg) {
++  return typeof arg === 'object' && arg !== null;
++}
++
++function isUndefined(arg) {
++  return arg === void 0;
++}
++
++},{}],11:[function(require,module,exports){
+ /**
+  * inspired by is-number <https://github.com/jonschlinkert/is-number>
+  * but significantly simplified and sped up by ignoring number and string constructors
+@@ -11463,7 +11573,7 @@ module.exports = function(n) {
+     return n - n < 1;
+ };
+ 
+-},{}],13:[function(require,module,exports){
++},{}],12:[function(require,module,exports){
+ module.exports = fromQuat;
+ 
+ /**
+@@ -11511,21 +11621,202 @@ function fromQuat(out, q) {
+ 
+     return out;
+ };
++},{}],13:[function(require,module,exports){
++// shim for using process in browser
++var process = module.exports = {};
++
++// cached from whatever global is present so that test runners that stub it
++// don't break things.  But we need to wrap it in a try catch in case it is
++// wrapped in strict mode code which doesn't define any globals.  It's inside a
++// function because try/catches deoptimize in certain engines.
++
++var cachedSetTimeout;
++var cachedClearTimeout;
++
++function defaultSetTimout() {
++    throw new Error('setTimeout has not been defined');
++}
++function defaultClearTimeout () {
++    throw new Error('clearTimeout has not been defined');
++}
++(function () {
++    try {
++        if (typeof setTimeout === 'function') {
++            cachedSetTimeout = setTimeout;
++        } else {
++            cachedSetTimeout = defaultSetTimout;
++        }
++    } catch (e) {
++        cachedSetTimeout = defaultSetTimout;
++    }
++    try {
++        if (typeof clearTimeout === 'function') {
++            cachedClearTimeout = clearTimeout;
++        } else {
++            cachedClearTimeout = defaultClearTimeout;
++        }
++    } catch (e) {
++        cachedClearTimeout = defaultClearTimeout;
++    }
++} ())
++function runTimeout(fun) {
++    if (cachedSetTimeout === setTimeout) {
++        //normal enviroments in sane situations
++        return setTimeout(fun, 0);
++    }
++    // if setTimeout wasn't available but was latter defined
++    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
++        cachedSetTimeout = setTimeout;
++        return setTimeout(fun, 0);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedSetTimeout(fun, 0);
++    } catch(e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
++            return cachedSetTimeout.call(null, fun, 0);
++        } catch(e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
++            return cachedSetTimeout.call(this, fun, 0);
++        }
++    }
++
++
++}
++function runClearTimeout(marker) {
++    if (cachedClearTimeout === clearTimeout) {
++        //normal enviroments in sane situations
++        return clearTimeout(marker);
++    }
++    // if clearTimeout wasn't available but was latter defined
++    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
++        cachedClearTimeout = clearTimeout;
++        return clearTimeout(marker);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedClearTimeout(marker);
++    } catch (e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
++            return cachedClearTimeout.call(null, marker);
++        } catch (e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
++            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
++            return cachedClearTimeout.call(this, marker);
++        }
++    }
++
++
++
++}
++var queue = [];
++var draining = false;
++var currentQueue;
++var queueIndex = -1;
++
++function cleanUpNextTick() {
++    if (!draining || !currentQueue) {
++        return;
++    }
++    draining = false;
++    if (currentQueue.length) {
++        queue = currentQueue.concat(queue);
++    } else {
++        queueIndex = -1;
++    }
++    if (queue.length) {
++        drainQueue();
++    }
++}
++
++function drainQueue() {
++    if (draining) {
++        return;
++    }
++    var timeout = runTimeout(cleanUpNextTick);
++    draining = true;
++
++    var len = queue.length;
++    while(len) {
++        currentQueue = queue;
++        queue = [];
++        while (++queueIndex < len) {
++            if (currentQueue) {
++                currentQueue[queueIndex].run();
++            }
++        }
++        queueIndex = -1;
++        len = queue.length;
++    }
++    currentQueue = null;
++    draining = false;
++    runClearTimeout(timeout);
++}
++
++process.nextTick = function (fun) {
++    var args = new Array(arguments.length - 1);
++    if (arguments.length > 1) {
++        for (var i = 1; i < arguments.length; i++) {
++            args[i - 1] = arguments[i];
++        }
++    }
++    queue.push(new Item(fun, args));
++    if (queue.length === 1 && !draining) {
++        runTimeout(drainQueue);
++    }
++};
++
++// v8 likes predictible objects
++function Item(fun, array) {
++    this.fun = fun;
++    this.array = array;
++}
++Item.prototype.run = function () {
++    this.fun.apply(null, this.array);
++};
++process.title = 'browser';
++process.browser = true;
++process.env = {};
++process.argv = [];
++process.version = ''; // empty string to avoid regexp issues
++process.versions = {};
++
++function noop() {}
++
++process.on = noop;
++process.addListener = noop;
++process.once = noop;
++process.off = noop;
++process.removeListener = noop;
++process.removeAllListeners = noop;
++process.emit = noop;
++
++process.binding = function (name) {
++    throw new Error('process.binding is not supported');
++};
++
++process.cwd = function () { return '/' };
++process.chdir = function (dir) {
++    throw new Error('process.chdir is not supported');
++};
++process.umask = function() { return 0; };
++
+ },{}],14:[function(require,module,exports){
+-// TinyColor v1.3.0
++// TinyColor v1.4.1
+ // https://github.com/bgrins/TinyColor
+ // Brian Grinstead, MIT License
+ 
+-(function() {
++(function(Math) {
+ 
+ var trimLeft = /^\s+/,
+     trimRight = /\s+$/,
+     tinyCounter = 0,
+-    math = Math,
+-    mathRound = math.round,
+-    mathMin = math.min,
+-    mathMax = math.max,
+-    mathRandom = math.random;
++    mathRound = Math.round,
++    mathMin = Math.min,
++    mathMax = Math.max,
++    mathRandom = Math.random;
+ 
+ function tinycolor (color, opts) {
+ 
+@@ -11633,11 +11924,11 @@ tinycolor.prototype = {
+     toHexString: function(allow3Char) {
+         return '#' + this.toHex(allow3Char);
+     },
+-    toHex8: function() {
+-        return rgbaToHex(this._r, this._g, this._b, this._a);
++    toHex8: function(allow4Char) {
++        return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
+     },
+-    toHex8String: function() {
+-        return '#' + this.toHex8();
++    toHex8String: function(allow4Char) {
++        return '#' + this.toHex8(allow4Char);
+     },
+     toRgb: function() {
+         return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
+@@ -11667,13 +11958,13 @@ tinycolor.prototype = {
+         return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
+     },
+     toFilter: function(secondColor) {
+-        var hex8String = '#' + rgbaToHex(this._r, this._g, this._b, this._a);
++        var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
+         var secondHex8String = hex8String;
+         var gradientType = this._gradientType ? "GradientType = 1, " : "";
+ 
+         if (secondColor) {
+             var s = tinycolor(secondColor);
+-            secondHex8String = s.toHex8String();
++            secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
+         }
+ 
+         return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
+@@ -11684,7 +11975,7 @@ tinycolor.prototype = {
+ 
+         var formattedString = false;
+         var hasAlpha = this._a < 1 && this._a >= 0;
+-        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "name");
++        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");
+ 
+         if (needsAlphaFormat) {
+             // Special case for "transparent", all other non-alpha formats
+@@ -11706,6 +11997,9 @@ tinycolor.prototype = {
+         if (format === "hex3") {
+             formattedString = this.toHexString(true);
+         }
++        if (format === "hex4") {
++            formattedString = this.toHex8String(true);
++        }
+         if (format === "hex8") {
+             formattedString = this.toHex8String();
+         }
+@@ -11818,6 +12112,9 @@ function inputToRGB(color) {
+ 
+     var rgb = { r: 0, g: 0, b: 0 };
+     var a = 1;
++    var s = null;
++    var v = null;
++    var l = null;
+     var ok = false;
+     var format = false;
+ 
+@@ -11826,22 +12123,22 @@ function inputToRGB(color) {
+     }
+ 
+     if (typeof color == "object") {
+-        if (color.hasOwnProperty("r") && color.hasOwnProperty("g") && color.hasOwnProperty("b")) {
++        if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
+             rgb = rgbToRgb(color.r, color.g, color.b);
+             ok = true;
+             format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
+         }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("v")) {
+-            color.s = convertToPercentage(color.s);
+-            color.v = convertToPercentage(color.v);
+-            rgb = hsvToRgb(color.h, color.s, color.v);
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
++            s = convertToPercentage(color.s);
++            v = convertToPercentage(color.v);
++            rgb = hsvToRgb(color.h, s, v);
+             ok = true;
+             format = "hsv";
+         }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("l")) {
+-            color.s = convertToPercentage(color.s);
+-            color.l = convertToPercentage(color.l);
+-            rgb = hslToRgb(color.h, color.s, color.l);
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
++            s = convertToPercentage(color.s);
++            l = convertToPercentage(color.l);
++            rgb = hslToRgb(color.h, s, l);
+             ok = true;
+             format = "hsl";
+         }
+@@ -11988,7 +12285,7 @@ function rgbToHsv(r, g, b) {
+     s = bound01(s, 100);
+     v = bound01(v, 100);
+ 
+-    var i = math.floor(h),
++    var i = Math.floor(h),
+         f = h - i,
+         p = v * (1 - s),
+         q = v * (1 - f * s),
+@@ -12023,9 +12320,29 @@ function rgbToHex(r, g, b, allow3Char) {
+ 
+ // `rgbaToHex`
+ // Converts an RGBA color plus alpha transparency to hex
+-// Assumes r, g, b and a are contained in the set [0, 255]
+-// Returns an 8 character hex
+-function rgbaToHex(r, g, b, a) {
++// Assumes r, g, b are contained in the set [0, 255] and
++// a in [0, 1]. Returns a 4 or 8 character rgba hex
++function rgbaToHex(r, g, b, a, allow4Char) {
++
++    var hex = [
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16)),
++        pad2(convertDecimalToHex(a))
++    ];
++
++    // Return a 4 character hex if possible
++    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
++        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
++    }
++
++    return hex.join("");
++}
++
++// `rgbaToArgbHex`
++// Converts an RGBA color to an ARGB Hex8 string
++// Rarely used, but required for "toFilter()"
++function rgbaToArgbHex(r, g, b, a) {
+ 
+     var hex = [
+         pad2(convertDecimalToHex(a)),
+@@ -12107,7 +12424,7 @@ function darken (color, amount) {
+ // Values outside of this range will be wrapped into this range.
+ function spin(color, amount) {
+     var hsl = tinycolor(color).toHsl();
+-    var hue = (mathRound(hsl.h) + amount) % 360;
++    var hue = (hsl.h + amount) % 360;
+     hsl.h = hue < 0 ? 360 + hue : hue;
+     return tinycolor(hsl);
+ }
+@@ -12194,26 +12511,12 @@ tinycolor.mix = function(color1, color2, amount) {
+     var rgb2 = tinycolor(color2).toRgb();
+ 
+     var p = amount / 100;
+-    var w = p * 2 - 1;
+-    var a = rgb2.a - rgb1.a;
+-
+-    var w1;
+-
+-    if (w * a == -1) {
+-        w1 = w;
+-    } else {
+-        w1 = (w + a) / (1 + w * a);
+-    }
+-
+-    w1 = (w1 + 1) / 2;
+-
+-    var w2 = 1 - w1;
+ 
+     var rgba = {
+-        r: rgb2.r * w1 + rgb1.r * w2,
+-        g: rgb2.g * w1 + rgb1.g * w2,
+-        b: rgb2.b * w1 + rgb1.b * w2,
+-        a: rgb2.a * p  + rgb1.a * (1 - p)
++        r: ((rgb2.r - rgb1.r) * p) + rgb1.r,
++        g: ((rgb2.g - rgb1.g) * p) + rgb1.g,
++        b: ((rgb2.b - rgb1.b) * p) + rgb1.b,
++        a: ((rgb2.a - rgb1.a) * p) + rgb1.a
+     };
+ 
+     return tinycolor(rgba);
+@@ -12499,7 +12802,7 @@ function bound01(n, max) {
+     }
+ 
+     // Handle floating point rounding errors
+-    if ((math.abs(n - max) < 0.000001)) {
++    if ((Math.abs(n - max) < 0.000001)) {
+         return 1;
+     }
+ 
+@@ -12569,6 +12872,7 @@ var matchers = (function() {
+     var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+ 
+     return {
++        CSS_UNIT: new RegExp(CSS_UNIT),
+         rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
+         rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
+         hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
+@@ -12577,10 +12881,18 @@ var matchers = (function() {
+         hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
+         hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+         hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
++        hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+         hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
+     };
+ })();
+ 
++// `isValidCSSUnit`
++// Take in a single string / number and check to see if it looks like a CSS unit
++// (see `matchers` above for definition).
++function isValidCSSUnit(color) {
++    return !!matchers.CSS_UNIT.exec(color);
++}
++
+ // `stringInputToObject`
+ // Permissive string parsing.  Take in a number of formats, and output an object
+ // based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
+@@ -12621,10 +12933,10 @@ function stringInputToObject(color) {
+     }
+     if ((match = matchers.hex8.exec(color))) {
+         return {
+-            a: convertHexToDecimal(match[1]),
+-            r: parseIntFromHex(match[2]),
+-            g: parseIntFromHex(match[3]),
+-            b: parseIntFromHex(match[4]),
++            r: parseIntFromHex(match[1]),
++            g: parseIntFromHex(match[2]),
++            b: parseIntFromHex(match[3]),
++            a: convertHexToDecimal(match[4]),
+             format: named ? "name" : "hex8"
+         };
+     }
+@@ -12636,6 +12948,15 @@ function stringInputToObject(color) {
+             format: named ? "name" : "hex"
+         };
+     }
++    if ((match = matchers.hex4.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1] + '' + match[1]),
++            g: parseIntFromHex(match[2] + '' + match[2]),
++            b: parseIntFromHex(match[3] + '' + match[3]),
++            a: convertHexToDecimal(match[4] + '' + match[4]),
++            format: named ? "name" : "hex8"
++        };
++    }
+     if ((match = matchers.hex3.exec(color))) {
+         return {
+             r: parseIntFromHex(match[1] + '' + match[1]),
+@@ -12677,557 +12998,556 @@ else {
+     window.tinycolor = tinycolor;
+ }
+ 
+-})();
++})(Math);
+ 
+ },{}],15:[function(require,module,exports){
+ (function (global, factory) {
+   typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+   typeof define === 'function' && define.amd ? define(['exports'], factory) :
+-  (factory((global.topojson = {})));
+-}(this, function (exports) { 'use strict';
++  (factory((global.topojson = global.topojson || {})));
++}(this, (function (exports) { 'use strict';
+ 
+-  function noop() {}
++function noop() {}
+ 
+-  function absolute(transform) {
+-    if (!transform) return noop;
+-    var x0,
+-        y0,
+-        kx = transform.scale[0],
+-        ky = transform.scale[1],
+-        dx = transform.translate[0],
+-        dy = transform.translate[1];
+-    return function(point, i) {
+-      if (!i) x0 = y0 = 0;
+-      point[0] = (x0 += point[0]) * kx + dx;
+-      point[1] = (y0 += point[1]) * ky + dy;
+-    };
+-  }
++function transformAbsolute(transform) {
++  if (!transform) return noop;
++  var x0,
++      y0,
++      kx = transform.scale[0],
++      ky = transform.scale[1],
++      dx = transform.translate[0],
++      dy = transform.translate[1];
++  return function(point, i) {
++    if (!i) x0 = y0 = 0;
++    point[0] = (x0 += point[0]) * kx + dx;
++    point[1] = (y0 += point[1]) * ky + dy;
++  };
++}
+ 
+-  function relative(transform) {
+-    if (!transform) return noop;
+-    var x0,
+-        y0,
+-        kx = transform.scale[0],
+-        ky = transform.scale[1],
+-        dx = transform.translate[0],
+-        dy = transform.translate[1];
+-    return function(point, i) {
+-      if (!i) x0 = y0 = 0;
+-      var x1 = (point[0] - dx) / kx | 0,
+-          y1 = (point[1] - dy) / ky | 0;
+-      point[0] = x1 - x0;
+-      point[1] = y1 - y0;
+-      x0 = x1;
+-      y0 = y1;
+-    };
+-  }
++function transformRelative(transform) {
++  if (!transform) return noop;
++  var x0,
++      y0,
++      kx = transform.scale[0],
++      ky = transform.scale[1],
++      dx = transform.translate[0],
++      dy = transform.translate[1];
++  return function(point, i) {
++    if (!i) x0 = y0 = 0;
++    var x1 = Math.round((point[0] - dx) / kx),
++        y1 = Math.round((point[1] - dy) / ky);
++    point[0] = x1 - x0;
++    point[1] = y1 - y0;
++    x0 = x1;
++    y0 = y1;
++  };
++}
++
++function reverse(array, n) {
++  var t, j = array.length, i = j - n;
++  while (i < --j) t = array[i], array[i++] = array[j], array[j] = t;
++}
+ 
+-  function reverse(array, n) {
+-    var t, j = array.length, i = j - n;
+-    while (i < --j) t = array[i], array[i++] = array[j], array[j] = t;
++function bisect(a, x) {
++  var lo = 0, hi = a.length;
++  while (lo < hi) {
++    var mid = lo + hi >>> 1;
++    if (a[mid] < x) lo = mid + 1;
++    else hi = mid;
+   }
++  return lo;
++}
++
++function feature(topology, o) {
++  return o.type === "GeometryCollection" ? {
++    type: "FeatureCollection",
++    features: o.geometries.map(function(o) { return feature$1(topology, o); })
++  } : feature$1(topology, o);
++}
+ 
+-  function bisect(a, x) {
+-    var lo = 0, hi = a.length;
+-    while (lo < hi) {
+-      var mid = lo + hi >>> 1;
+-      if (a[mid] < x) lo = mid + 1;
+-      else hi = mid;
++function feature$1(topology, o) {
++  var f = {
++    type: "Feature",
++    id: o.id,
++    properties: o.properties || {},
++    geometry: object(topology, o)
++  };
++  if (o.id == null) delete f.id;
++  return f;
++}
++
++function object(topology, o) {
++  var absolute = transformAbsolute(topology.transform),
++      arcs = topology.arcs;
++
++  function arc(i, points) {
++    if (points.length) points.pop();
++    for (var a = arcs[i < 0 ? ~i : i], k = 0, n = a.length, p; k < n; ++k) {
++      points.push(p = a[k].slice());
++      absolute(p, k);
+     }
+-    return lo;
++    if (i < 0) reverse(points, n);
++  }
++
++  function point(p) {
++    p = p.slice();
++    absolute(p, 0);
++    return p;
+   }
+ 
+-  function feature(topology, o) {
+-    return o.type === "GeometryCollection" ? {
+-      type: "FeatureCollection",
+-      features: o.geometries.map(function(o) { return feature$1(topology, o); })
+-    } : feature$1(topology, o);
++  function line(arcs) {
++    var points = [];
++    for (var i = 0, n = arcs.length; i < n; ++i) arc(arcs[i], points);
++    if (points.length < 2) points.push(points[0].slice());
++    return points;
+   }
+ 
+-  function feature$1(topology, o) {
+-    var f = {
+-      type: "Feature",
+-      id: o.id,
+-      properties: o.properties || {},
+-      geometry: object(topology, o)
+-    };
+-    if (o.id == null) delete f.id;
+-    return f;
++  function ring(arcs) {
++    var points = line(arcs);
++    while (points.length < 4) points.push(points[0].slice());
++    return points;
+   }
+ 
+-  function object(topology, o) {
+-    var absolute$$ = absolute(topology.transform),
+-        arcs = topology.arcs;
++  function polygon(arcs) {
++    return arcs.map(ring);
++  }
+ 
+-    function arc(i, points) {
+-      if (points.length) points.pop();
+-      for (var a = arcs[i < 0 ? ~i : i], k = 0, n = a.length, p; k < n; ++k) {
+-        points.push(p = a[k].slice());
+-        absolute$$(p, k);
+-      }
+-      if (i < 0) reverse(points, n);
+-    }
++  function geometry(o) {
++    var t = o.type;
++    return t === "GeometryCollection" ? {type: t, geometries: o.geometries.map(geometry)}
++        : t in geometryType ? {type: t, coordinates: geometryType[t](o)}
++        : null;
++  }
+ 
+-    function point(p) {
+-      p = p.slice();
+-      absolute$$(p, 0);
+-      return p;
+-    }
++  var geometryType = {
++    Point: function(o) { return point(o.coordinates); },
++    MultiPoint: function(o) { return o.coordinates.map(point); },
++    LineString: function(o) { return line(o.arcs); },
++    MultiLineString: function(o) { return o.arcs.map(line); },
++    Polygon: function(o) { return polygon(o.arcs); },
++    MultiPolygon: function(o) { return o.arcs.map(polygon); }
++  };
+ 
+-    function line(arcs) {
+-      var points = [];
+-      for (var i = 0, n = arcs.length; i < n; ++i) arc(arcs[i], points);
+-      if (points.length < 2) points.push(points[0].slice());
+-      return points;
+-    }
++  return geometry(o);
++}
+ 
+-    function ring(arcs) {
+-      var points = line(arcs);
+-      while (points.length < 4) points.push(points[0].slice());
+-      return points;
+-    }
++function stitchArcs(topology, arcs) {
++  var stitchedArcs = {},
++      fragmentByStart = {},
++      fragmentByEnd = {},
++      fragments = [],
++      emptyIndex = -1;
+ 
+-    function polygon(arcs) {
+-      return arcs.map(ring);
++  // Stitch empty arcs first, since they may be subsumed by other arcs.
++  arcs.forEach(function(i, j) {
++    var arc = topology.arcs[i < 0 ? ~i : i], t;
++    if (arc.length < 3 && !arc[1][0] && !arc[1][1]) {
++      t = arcs[++emptyIndex], arcs[emptyIndex] = i, arcs[j] = t;
+     }
++  });
+ 
+-    function geometry(o) {
+-      var t = o.type;
+-      return t === "GeometryCollection" ? {type: t, geometries: o.geometries.map(geometry)}
+-          : t in geometryType ? {type: t, coordinates: geometryType[t](o)}
+-          : null;
++  arcs.forEach(function(i) {
++    var e = ends(i),
++        start = e[0],
++        end = e[1],
++        f, g;
++
++    if (f = fragmentByEnd[start]) {
++      delete fragmentByEnd[f.end];
++      f.push(i);
++      f.end = end;
++      if (g = fragmentByStart[end]) {
++        delete fragmentByStart[g.start];
++        var fg = g === f ? f : f.concat(g);
++        fragmentByStart[fg.start = f.start] = fragmentByEnd[fg.end = g.end] = fg;
++      } else {
++        fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
++      }
++    } else if (f = fragmentByStart[end]) {
++      delete fragmentByStart[f.start];
++      f.unshift(i);
++      f.start = start;
++      if (g = fragmentByEnd[start]) {
++        delete fragmentByEnd[g.end];
++        var gf = g === f ? f : g.concat(f);
++        fragmentByStart[gf.start = g.start] = fragmentByEnd[gf.end = f.end] = gf;
++      } else {
++        fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
++      }
++    } else {
++      f = [i];
++      fragmentByStart[f.start = start] = fragmentByEnd[f.end = end] = f;
+     }
++  });
+ 
+-    var geometryType = {
+-      Point: function(o) { return point(o.coordinates); },
+-      MultiPoint: function(o) { return o.coordinates.map(point); },
+-      LineString: function(o) { return line(o.arcs); },
+-      MultiLineString: function(o) { return o.arcs.map(line); },
+-      Polygon: function(o) { return polygon(o.arcs); },
+-      MultiPolygon: function(o) { return o.arcs.map(polygon); }
+-    };
+-
+-    return geometry(o);
++  function ends(i) {
++    var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
++    if (topology.transform) p1 = [0, 0], arc.forEach(function(dp) { p1[0] += dp[0], p1[1] += dp[1]; });
++    else p1 = arc[arc.length - 1];
++    return i < 0 ? [p1, p0] : [p0, p1];
+   }
+ 
+-  function stitchArcs(topology, arcs) {
+-    var stitchedArcs = {},
+-        fragmentByStart = {},
+-        fragmentByEnd = {},
+-        fragments = [],
+-        emptyIndex = -1;
++  function flush(fragmentByEnd, fragmentByStart) {
++    for (var k in fragmentByEnd) {
++      var f = fragmentByEnd[k];
++      delete fragmentByStart[f.start];
++      delete f.start;
++      delete f.end;
++      f.forEach(function(i) { stitchedArcs[i < 0 ? ~i : i] = 1; });
++      fragments.push(f);
++    }
++  }
+ 
+-    // Stitch empty arcs first, since they may be subsumed by other arcs.
+-    arcs.forEach(function(i, j) {
+-      var arc = topology.arcs[i < 0 ? ~i : i], t;
+-      if (arc.length < 3 && !arc[1][0] && !arc[1][1]) {
+-        t = arcs[++emptyIndex], arcs[emptyIndex] = i, arcs[j] = t;
+-      }
+-    });
++  flush(fragmentByEnd, fragmentByStart);
++  flush(fragmentByStart, fragmentByEnd);
++  arcs.forEach(function(i) { if (!stitchedArcs[i < 0 ? ~i : i]) fragments.push([i]); });
+ 
+-    arcs.forEach(function(i) {
+-      var e = ends(i),
+-          start = e[0],
+-          end = e[1],
+-          f, g;
+-
+-      if (f = fragmentByEnd[start]) {
+-        delete fragmentByEnd[f.end];
+-        f.push(i);
+-        f.end = end;
+-        if (g = fragmentByStart[end]) {
+-          delete fragmentByStart[g.start];
+-          var fg = g === f ? f : f.concat(g);
+-          fragmentByStart[fg.start = f.start] = fragmentByEnd[fg.end = g.end] = fg;
+-        } else {
+-          fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
+-        }
+-      } else if (f = fragmentByStart[end]) {
+-        delete fragmentByStart[f.start];
+-        f.unshift(i);
+-        f.start = start;
+-        if (g = fragmentByEnd[start]) {
+-          delete fragmentByEnd[g.end];
+-          var gf = g === f ? f : g.concat(f);
+-          fragmentByStart[gf.start = g.start] = fragmentByEnd[gf.end = f.end] = gf;
+-        } else {
+-          fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
+-        }
+-      } else {
+-        f = [i];
+-        fragmentByStart[f.start = start] = fragmentByEnd[f.end = end] = f;
+-      }
+-    });
++  return fragments;
++}
+ 
+-    function ends(i) {
+-      var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
+-      if (topology.transform) p1 = [0, 0], arc.forEach(function(dp) { p1[0] += dp[0], p1[1] += dp[1]; });
+-      else p1 = arc[arc.length - 1];
+-      return i < 0 ? [p1, p0] : [p0, p1];
+-    }
+-
+-    function flush(fragmentByEnd, fragmentByStart) {
+-      for (var k in fragmentByEnd) {
+-        var f = fragmentByEnd[k];
+-        delete fragmentByStart[f.start];
+-        delete f.start;
+-        delete f.end;
+-        f.forEach(function(i) { stitchedArcs[i < 0 ? ~i : i] = 1; });
+-        fragments.push(f);
+-      }
+-    }
++function mesh(topology) {
++  return object(topology, meshArcs.apply(this, arguments));
++}
+ 
+-    flush(fragmentByEnd, fragmentByStart);
+-    flush(fragmentByStart, fragmentByEnd);
+-    arcs.forEach(function(i) { if (!stitchedArcs[i < 0 ? ~i : i]) fragments.push([i]); });
++function meshArcs(topology, o, filter) {
++  var arcs = [];
+ 
+-    return fragments;
++  function arc(i) {
++    var j = i < 0 ? ~i : i;
++    (geomsByArc[j] || (geomsByArc[j] = [])).push({i: i, g: geom});
+   }
+ 
+-  function mesh(topology) {
+-    return object(topology, meshArcs.apply(this, arguments));
++  function line(arcs) {
++    arcs.forEach(arc);
+   }
+ 
+-  function meshArcs(topology, o, filter) {
+-    var arcs = [];
+-
+-    function arc(i) {
+-      var j = i < 0 ? ~i : i;
+-      (geomsByArc[j] || (geomsByArc[j] = [])).push({i: i, g: geom});
+-    }
+-
+-    function line(arcs) {
+-      arcs.forEach(arc);
+-    }
+-
+-    function polygon(arcs) {
+-      arcs.forEach(line);
+-    }
++  function polygon(arcs) {
++    arcs.forEach(line);
++  }
+ 
+-    function geometry(o) {
+-      if (o.type === "GeometryCollection") o.geometries.forEach(geometry);
+-      else if (o.type in geometryType) geom = o, geometryType[o.type](o.arcs);
+-    }
++  function geometry(o) {
++    if (o.type === "GeometryCollection") o.geometries.forEach(geometry);
++    else if (o.type in geometryType) geom = o, geometryType[o.type](o.arcs);
++  }
+ 
+-    if (arguments.length > 1) {
+-      var geomsByArc = [],
+-          geom;
+-
+-      var geometryType = {
+-        LineString: line,
+-        MultiLineString: polygon,
+-        Polygon: polygon,
+-        MultiPolygon: function(arcs) { arcs.forEach(polygon); }
+-      };
++  if (arguments.length > 1) {
++    var geomsByArc = [],
++        geom;
+ 
+-      geometry(o);
++    var geometryType = {
++      LineString: line,
++      MultiLineString: polygon,
++      Polygon: polygon,
++      MultiPolygon: function(arcs) { arcs.forEach(polygon); }
++    };
+ 
+-      geomsByArc.forEach(arguments.length < 3
+-          ? function(geoms) { arcs.push(geoms[0].i); }
+-          : function(geoms) { if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs.push(geoms[0].i); });
+-    } else {
+-      for (var i = 0, n = topology.arcs.length; i < n; ++i) arcs.push(i);
+-    }
++    geometry(o);
+ 
+-    return {type: "MultiLineString", arcs: stitchArcs(topology, arcs)};
++    geomsByArc.forEach(arguments.length < 3
++        ? function(geoms) { arcs.push(geoms[0].i); }
++        : function(geoms) { if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs.push(geoms[0].i); });
++  } else {
++    for (var i = 0, n = topology.arcs.length; i < n; ++i) arcs.push(i);
+   }
+ 
+-  function triangle(triangle) {
+-    var a = triangle[0], b = triangle[1], c = triangle[2];
+-    return Math.abs((a[0] - c[0]) * (b[1] - a[1]) - (a[0] - b[0]) * (c[1] - a[1]));
+-  }
++  return {type: "MultiLineString", arcs: stitchArcs(topology, arcs)};
++}
+ 
+-  function ring(ring) {
+-    var i = -1,
+-        n = ring.length,
+-        a,
+-        b = ring[n - 1],
+-        area = 0;
++function cartesianTriangleArea(triangle) {
++  var a = triangle[0], b = triangle[1], c = triangle[2];
++  return Math.abs((a[0] - c[0]) * (b[1] - a[1]) - (a[0] - b[0]) * (c[1] - a[1]));
++}
+ 
+-    while (++i < n) {
+-      a = b;
+-      b = ring[i];
+-      area += a[0] * b[1] - a[1] * b[0];
+-    }
++function ring(ring) {
++  var i = -1,
++      n = ring.length,
++      a,
++      b = ring[n - 1],
++      area = 0;
+ 
+-    return area / 2;
++  while (++i < n) {
++    a = b;
++    b = ring[i];
++    area += a[0] * b[1] - a[1] * b[0];
+   }
+ 
+-  function merge(topology) {
+-    return object(topology, mergeArcs.apply(this, arguments));
+-  }
++  return area / 2;
++}
+ 
+-  function mergeArcs(topology, objects) {
+-    var polygonsByArc = {},
+-        polygons = [],
+-        components = [];
++function merge(topology) {
++  return object(topology, mergeArcs.apply(this, arguments));
++}
+ 
+-    objects.forEach(function(o) {
+-      if (o.type === "Polygon") register(o.arcs);
+-      else if (o.type === "MultiPolygon") o.arcs.forEach(register);
+-    });
++function mergeArcs(topology, objects) {
++  var polygonsByArc = {},
++      polygons = [],
++      components = [];
+ 
+-    function register(polygon) {
+-      polygon.forEach(function(ring$$) {
+-        ring$$.forEach(function(arc) {
+-          (polygonsByArc[arc = arc < 0 ? ~arc : arc] || (polygonsByArc[arc] = [])).push(polygon);
+-        });
++  objects.forEach(function(o) {
++    if (o.type === "Polygon") register(o.arcs);
++    else if (o.type === "MultiPolygon") o.arcs.forEach(register);
++  });
++
++  function register(polygon) {
++    polygon.forEach(function(ring$$) {
++      ring$$.forEach(function(arc) {
++        (polygonsByArc[arc = arc < 0 ? ~arc : arc] || (polygonsByArc[arc] = [])).push(polygon);
+       });
+-      polygons.push(polygon);
+-    }
+-
+-    function exterior(ring$$) {
+-      return ring(object(topology, {type: "Polygon", arcs: [ring$$]}).coordinates[0]) > 0; // TODO allow spherical?
+-    }
+-
+-    polygons.forEach(function(polygon) {
+-      if (!polygon._) {
+-        var component = [],
+-            neighbors = [polygon];
+-        polygon._ = 1;
+-        components.push(component);
+-        while (polygon = neighbors.pop()) {
+-          component.push(polygon);
+-          polygon.forEach(function(ring$$) {
+-            ring$$.forEach(function(arc) {
+-              polygonsByArc[arc < 0 ? ~arc : arc].forEach(function(polygon) {
+-                if (!polygon._) {
+-                  polygon._ = 1;
+-                  neighbors.push(polygon);
+-                }
+-              });
++    });
++    polygons.push(polygon);
++  }
++
++  function area(ring$$) {
++    return Math.abs(ring(object(topology, {type: "Polygon", arcs: [ring$$]}).coordinates[0]));
++  }
++
++  polygons.forEach(function(polygon) {
++    if (!polygon._) {
++      var component = [],
++          neighbors = [polygon];
++      polygon._ = 1;
++      components.push(component);
++      while (polygon = neighbors.pop()) {
++        component.push(polygon);
++        polygon.forEach(function(ring$$) {
++          ring$$.forEach(function(arc) {
++            polygonsByArc[arc < 0 ? ~arc : arc].forEach(function(polygon) {
++              if (!polygon._) {
++                polygon._ = 1;
++                neighbors.push(polygon);
++              }
+             });
+           });
+-        }
++        });
+       }
+-    });
++    }
++  });
+ 
+-    polygons.forEach(function(polygon) {
+-      delete polygon._;
+-    });
++  polygons.forEach(function(polygon) {
++    delete polygon._;
++  });
+ 
+-    return {
+-      type: "MultiPolygon",
+-      arcs: components.map(function(polygons) {
+-        var arcs = [], n;
+-
+-        // Extract the exterior (unique) arcs.
+-        polygons.forEach(function(polygon) {
+-          polygon.forEach(function(ring$$) {
+-            ring$$.forEach(function(arc) {
+-              if (polygonsByArc[arc < 0 ? ~arc : arc].length < 2) {
+-                arcs.push(arc);
+-              }
+-            });
++  return {
++    type: "MultiPolygon",
++    arcs: components.map(function(polygons) {
++      var arcs = [], n;
++
++      // Extract the exterior (unique) arcs.
++      polygons.forEach(function(polygon) {
++        polygon.forEach(function(ring$$) {
++          ring$$.forEach(function(arc) {
++            if (polygonsByArc[arc < 0 ? ~arc : arc].length < 2) {
++              arcs.push(arc);
++            }
+           });
+         });
++      });
+ 
+-        // Stitch the arcs into one or more rings.
+-        arcs = stitchArcs(topology, arcs);
+-
+-        // If more than one ring is returned,
+-        // at most one of these rings can be the exterior;
+-        // this exterior ring has the same winding order
+-        // as any exterior ring in the original polygons.
+-        if ((n = arcs.length) > 1) {
+-          var sgn = exterior(polygons[0][0]);
+-          for (var i = 0, t; i < n; ++i) {
+-            if (sgn === exterior(arcs[i])) {
+-              t = arcs[0], arcs[0] = arcs[i], arcs[i] = t;
+-              break;
+-            }
++      // Stitch the arcs into one or more rings.
++      arcs = stitchArcs(topology, arcs);
++
++      // If more than one ring is returned,
++      // at most one of these rings can be the exterior;
++      // choose the one with the greatest absolute area.
++      if ((n = arcs.length) > 1) {
++        for (var i = 1, k = area(arcs[0]), ki, t; i < n; ++i) {
++          if ((ki = area(arcs[i])) > k) {
++            t = arcs[0], arcs[0] = arcs[i], arcs[i] = t, k = ki;
+           }
+         }
++      }
+ 
+-        return arcs;
+-      })
+-    };
+-  }
++      return arcs;
++    })
++  };
++}
+ 
+-  function neighbors(objects) {
+-    var indexesByArc = {}, // arc index -> array of object indexes
+-        neighbors = objects.map(function() { return []; });
++function neighbors(objects) {
++  var indexesByArc = {}, // arc index -> array of object indexes
++      neighbors = objects.map(function() { return []; });
+ 
+-    function line(arcs, i) {
+-      arcs.forEach(function(a) {
+-        if (a < 0) a = ~a;
+-        var o = indexesByArc[a];
+-        if (o) o.push(i);
+-        else indexesByArc[a] = [i];
+-      });
+-    }
++  function line(arcs, i) {
++    arcs.forEach(function(a) {
++      if (a < 0) a = ~a;
++      var o = indexesByArc[a];
++      if (o) o.push(i);
++      else indexesByArc[a] = [i];
++    });
++  }
+ 
+-    function polygon(arcs, i) {
+-      arcs.forEach(function(arc) { line(arc, i); });
+-    }
++  function polygon(arcs, i) {
++    arcs.forEach(function(arc) { line(arc, i); });
++  }
+ 
+-    function geometry(o, i) {
+-      if (o.type === "GeometryCollection") o.geometries.forEach(function(o) { geometry(o, i); });
+-      else if (o.type in geometryType) geometryType[o.type](o.arcs, i);
+-    }
++  function geometry(o, i) {
++    if (o.type === "GeometryCollection") o.geometries.forEach(function(o) { geometry(o, i); });
++    else if (o.type in geometryType) geometryType[o.type](o.arcs, i);
++  }
+ 
+-    var geometryType = {
+-      LineString: line,
+-      MultiLineString: polygon,
+-      Polygon: polygon,
+-      MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); }
+-    };
++  var geometryType = {
++    LineString: line,
++    MultiLineString: polygon,
++    Polygon: polygon,
++    MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); }
++  };
+ 
+-    objects.forEach(geometry);
++  objects.forEach(geometry);
+ 
+-    for (var i in indexesByArc) {
+-      for (var indexes = indexesByArc[i], m = indexes.length, j = 0; j < m; ++j) {
+-        for (var k = j + 1; k < m; ++k) {
+-          var ij = indexes[j], ik = indexes[k], n;
+-          if ((n = neighbors[ij])[i = bisect(n, ik)] !== ik) n.splice(i, 0, ik);
+-          if ((n = neighbors[ik])[i = bisect(n, ij)] !== ij) n.splice(i, 0, ij);
+-        }
++  for (var i in indexesByArc) {
++    for (var indexes = indexesByArc[i], m = indexes.length, j = 0; j < m; ++j) {
++      for (var k = j + 1; k < m; ++k) {
++        var ij = indexes[j], ik = indexes[k], n;
++        if ((n = neighbors[ij])[i = bisect(n, ik)] !== ik) n.splice(i, 0, ik);
++        if ((n = neighbors[ik])[i = bisect(n, ij)] !== ij) n.splice(i, 0, ij);
+       }
+     }
+-
+-    return neighbors;
+   }
+ 
+-  function compareArea(a, b) {
+-    return a[1][2] - b[1][2];
+-  }
++  return neighbors;
++}
+ 
+-  function minAreaHeap() {
+-    var heap = {},
+-        array = [],
+-        size = 0;
++function compareArea(a, b) {
++  return a[1][2] - b[1][2];
++}
+ 
+-    heap.push = function(object) {
+-      up(array[object._ = size] = object, size++);
+-      return size;
+-    };
++function minAreaHeap() {
++  var heap = {},
++      array = [],
++      size = 0;
+ 
+-    heap.pop = function() {
+-      if (size <= 0) return;
+-      var removed = array[0], object;
+-      if (--size > 0) object = array[size], down(array[object._ = 0] = object, 0);
+-      return removed;
+-    };
++  heap.push = function(object) {
++    up(array[object._ = size] = object, size++);
++    return size;
++  };
+ 
+-    heap.remove = function(removed) {
+-      var i = removed._, object;
+-      if (array[i] !== removed) return; // invalid request
+-      if (i !== --size) object = array[size], (compareArea(object, removed) < 0 ? up : down)(array[object._ = i] = object, i);
+-      return i;
+-    };
++  heap.pop = function() {
++    if (size <= 0) return;
++    var removed = array[0], object;
++    if (--size > 0) object = array[size], down(array[object._ = 0] = object, 0);
++    return removed;
++  };
+ 
+-    function up(object, i) {
+-      while (i > 0) {
+-        var j = ((i + 1) >> 1) - 1,
+-            parent = array[j];
+-        if (compareArea(object, parent) >= 0) break;
+-        array[parent._ = i] = parent;
+-        array[object._ = i = j] = object;
+-      }
+-    }
++  heap.remove = function(removed) {
++    var i = removed._, object;
++    if (array[i] !== removed) return; // invalid request
++    if (i !== --size) object = array[size], (compareArea(object, removed) < 0 ? up : down)(array[object._ = i] = object, i);
++    return i;
++  };
+ 
+-    function down(object, i) {
+-      while (true) {
+-        var r = (i + 1) << 1,
+-            l = r - 1,
+-            j = i,
+-            child = array[j];
+-        if (l < size && compareArea(array[l], child) < 0) child = array[j = l];
+-        if (r < size && compareArea(array[r], child) < 0) child = array[j = r];
+-        if (j === i) break;
+-        array[child._ = i] = child;
+-        array[object._ = i = j] = object;
+-      }
++  function up(object, i) {
++    while (i > 0) {
++      var j = ((i + 1) >> 1) - 1,
++          parent = array[j];
++      if (compareArea(object, parent) >= 0) break;
++      array[parent._ = i] = parent;
++      array[object._ = i = j] = object;
+     }
++  }
+ 
+-    return heap;
++  function down(object, i) {
++    while (true) {
++      var r = (i + 1) << 1,
++          l = r - 1,
++          j = i,
++          child = array[j];
++      if (l < size && compareArea(array[l], child) < 0) child = array[j = l];
++      if (r < size && compareArea(array[r], child) < 0) child = array[j = r];
++      if (j === i) break;
++      array[child._ = i] = child;
++      array[object._ = i = j] = object;
++    }
+   }
+ 
+-  function presimplify(topology, triangleArea) {
+-    var absolute$$ = absolute(topology.transform),
+-        relative$$ = relative(topology.transform),
+-        heap = minAreaHeap();
++  return heap;
++}
+ 
+-    if (!triangleArea) triangleArea = triangle;
++function presimplify(topology, triangleArea) {
++  var absolute = transformAbsolute(topology.transform),
++      relative = transformRelative(topology.transform),
++      heap = minAreaHeap();
+ 
+-    topology.arcs.forEach(function(arc) {
+-      var triangles = [],
+-          maxArea = 0,
+-          triangle,
+-          i,
+-          n,
+-          p;
++  if (!triangleArea) triangleArea = cartesianTriangleArea;
+ 
+-      // To store each point’s effective area, we create a new array rather than
+-      // extending the passed-in point to workaround a Chrome/V8 bug (getting
+-      // stuck in smi mode). For midpoints, the initial effective area of
+-      // Infinity will be computed in the next step.
+-      for (i = 0, n = arc.length; i < n; ++i) {
+-        p = arc[i];
+-        absolute$$(arc[i] = [p[0], p[1], Infinity], i);
+-      }
++  topology.arcs.forEach(function(arc) {
++    var triangles = [],
++        maxArea = 0,
++        triangle,
++        i,
++        n,
++        p;
+ 
+-      for (i = 1, n = arc.length - 1; i < n; ++i) {
+-        triangle = arc.slice(i - 1, i + 2);
+-        triangle[1][2] = triangleArea(triangle);
+-        triangles.push(triangle);
+-        heap.push(triangle);
+-      }
++    // To store each point’s effective area, we create a new array rather than
++    // extending the passed-in point to workaround a Chrome/V8 bug (getting
++    // stuck in smi mode). For midpoints, the initial effective area of
++    // Infinity will be computed in the next step.
++    for (i = 0, n = arc.length; i < n; ++i) {
++      p = arc[i];
++      absolute(arc[i] = [p[0], p[1], Infinity], i);
++    }
+ 
+-      for (i = 0, n = triangles.length; i < n; ++i) {
+-        triangle = triangles[i];
+-        triangle.previous = triangles[i - 1];
+-        triangle.next = triangles[i + 1];
+-      }
++    for (i = 1, n = arc.length - 1; i < n; ++i) {
++      triangle = arc.slice(i - 1, i + 2);
++      triangle[1][2] = triangleArea(triangle);
++      triangles.push(triangle);
++      heap.push(triangle);
++    }
+ 
+-      while (triangle = heap.pop()) {
+-        var previous = triangle.previous,
+-            next = triangle.next;
++    for (i = 0, n = triangles.length; i < n; ++i) {
++      triangle = triangles[i];
++      triangle.previous = triangles[i - 1];
++      triangle.next = triangles[i + 1];
++    }
+ 
+-        // If the area of the current point is less than that of the previous point
+-        // to be eliminated, use the latter's area instead. This ensures that the
+-        // current point cannot be eliminated without eliminating previously-
+-        // eliminated points.
+-        if (triangle[1][2] < maxArea) triangle[1][2] = maxArea;
+-        else maxArea = triangle[1][2];
++    while (triangle = heap.pop()) {
++      var previous = triangle.previous,
++          next = triangle.next;
+ 
+-        if (previous) {
+-          previous.next = next;
+-          previous[2] = triangle[2];
+-          update(previous);
+-        }
++      // If the area of the current point is less than that of the previous point
++      // to be eliminated, use the latter's area instead. This ensures that the
++      // current point cannot be eliminated without eliminating previously-
++      // eliminated points.
++      if (triangle[1][2] < maxArea) triangle[1][2] = maxArea;
++      else maxArea = triangle[1][2];
+ 
+-        if (next) {
+-          next.previous = previous;
+-          next[0] = triangle[0];
+-          update(next);
+-        }
++      if (previous) {
++        previous.next = next;
++        previous[2] = triangle[2];
++        update(previous);
+       }
+ 
+-      arc.forEach(relative$$);
+-    });
+-
+-    function update(triangle) {
+-      heap.remove(triangle);
+-      triangle[1][2] = triangleArea(triangle);
+-      heap.push(triangle);
++      if (next) {
++        next.previous = previous;
++        next[0] = triangle[0];
++        update(next);
++      }
+     }
+ 
+-    return topology;
++    arc.forEach(relative);
++  });
++
++  function update(triangle) {
++    heap.remove(triangle);
++    triangle[1][2] = triangleArea(triangle);
++    heap.push(triangle);
+   }
+ 
+-  var version = "1.6.24";
++  return topology;
++}
++
++var version = "1.6.27";
+ 
+-  exports.version = version;
+-  exports.mesh = mesh;
+-  exports.meshArcs = meshArcs;
+-  exports.merge = merge;
+-  exports.mergeArcs = mergeArcs;
+-  exports.feature = feature;
+-  exports.neighbors = neighbors;
+-  exports.presimplify = presimplify;
++exports.version = version;
++exports.mesh = mesh;
++exports.meshArcs = meshArcs;
++exports.merge = merge;
++exports.mergeArcs = mergeArcs;
++exports.feature = feature;
++exports.neighbors = neighbors;
++exports.presimplify = presimplify;
+ 
+-}));
++Object.defineProperty(exports, '__esModule', { value: true });
++
++})));
+ },{}],16:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+@@ -14492,7 +14812,7 @@ function lineIntersect(x1, y1, x2, y2, x3, y3, x4, y4) {
+     return {x: x1 + a * t, y: y1 + d * t};
+ }
+ 
+-},{"../../lib":99,"../../lib/setcursor":108,"../../lib/svg_text_utils":110,"../../plotly":118,"../../plots/cartesian/axes":121,"../color":20,"../dragelement":41,"../drawing":43,"./arrow_paths":16,"./attributes":17,"d3":10,"fast-isnumeric":12}],19:[function(require,module,exports){
++},{"../../lib":99,"../../lib/setcursor":108,"../../lib/svg_text_utils":110,"../../plotly":118,"../../plots/cartesian/axes":121,"../color":20,"../dragelement":41,"../drawing":43,"./arrow_paths":16,"./attributes":17,"d3":8,"fast-isnumeric":11}],19:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -14686,7 +15006,7 @@ function cleanOne(val) {
+     return 'rgb(' + rgbStr + ')';
+ }
+ 
+-},{"./attributes":19,"fast-isnumeric":12,"tinycolor2":14}],21:[function(require,module,exports){
++},{"./attributes":19,"fast-isnumeric":11,"tinycolor2":14}],21:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -15538,7 +15858,7 @@ module.exports = function draw(gd, id) {
+     return component;
+ };
+ 
+-},{"../../lib":99,"../../lib/extend":96,"../../lib/setcursor":108,"../../plotly":118,"../../plots/cartesian/axes":121,"../../plots/cartesian/axis_defaults":122,"../../plots/cartesian/layout_attributes":130,"../../plots/cartesian/position_defaults":133,"../../plots/plots":153,"../color":20,"../dragelement":41,"../drawing":43,"../titles":83,"./attributes":21,"d3":10,"tinycolor2":14}],24:[function(require,module,exports){
++},{"../../lib":99,"../../lib/extend":96,"../../lib/setcursor":108,"../../plotly":118,"../../plots/cartesian/axes":121,"../../plots/cartesian/axis_defaults":122,"../../plots/cartesian/layout_attributes":130,"../../plots/cartesian/position_defaults":133,"../../plots/plots":153,"../color":20,"../dragelement":41,"../drawing":43,"../titles":83,"./attributes":21,"d3":8,"tinycolor2":14}],24:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -15823,7 +16143,7 @@ module.exports = function colorScaleDefaults(traceIn, traceOut, layout, coerce,
+     if(showScale) colorbarDefaults(containerIn, containerOut, layout);
+ };
+ 
+-},{"../../lib":99,"../colorbar/defaults":22,"../colorbar/has_colorbar":24,"./flip_scale":31,"./is_valid_scale":35,"fast-isnumeric":12}],31:[function(require,module,exports){
++},{"../../lib":99,"../colorbar/defaults":22,"../colorbar/has_colorbar":24,"./flip_scale":31,"./is_valid_scale":35,"fast-isnumeric":11}],31:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -15934,7 +16254,7 @@ module.exports = function hasColorscale(trace, containerStr) {
+     );
+ };
+ 
+-},{"../../lib":99,"./is_valid_scale":35,"fast-isnumeric":12}],34:[function(require,module,exports){
++},{"../../lib":99,"./is_valid_scale":35,"fast-isnumeric":11}],34:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -16073,7 +16393,7 @@ module.exports = function makeScaleFunction(scl, cmin, cmax) {
+     };
+ };
+ 
+-},{"../../lib":99,"../color":20,"d3":10,"fast-isnumeric":12,"tinycolor2":14}],38:[function(require,module,exports){
++},{"../../lib":99,"../color":20,"d3":8,"fast-isnumeric":11,"tinycolor2":14}],38:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17075,7 +17395,7 @@ drawing.setClipUrl = function(s, localId) {
+     s.attr('clip-path', 'url(' + url + ')');
+ };
+ 
+-},{"../../constants/xmlns_namespaces":89,"../../lib":99,"../../lib/svg_text_utils":110,"../../plots/plots":153,"../../traces/scatter/make_bubble_size_func":189,"../../traces/scatter/subtypes":194,"../color":20,"../colorscale":34,"./symbol_defs":44,"d3":10,"fast-isnumeric":12}],44:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":89,"../../lib":99,"../../lib/svg_text_utils":110,"../../plots/plots":153,"../../traces/scatter/make_bubble_size_func":189,"../../traces/scatter/subtypes":194,"../color":20,"../colorscale":34,"./symbol_defs":44,"d3":8,"fast-isnumeric":11}],44:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17551,7 +17871,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"d3":10}],45:[function(require,module,exports){
++},{"d3":8}],45:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17713,7 +18033,7 @@ function calcOneAxis(calcTrace, trace, axis, coord) {
+     Axes.expand(axis, vals, {padded: true});
+ }
+ 
+-},{"../../plots/cartesian/axes":121,"../../plots/plots":153,"./compute_error":47,"fast-isnumeric":12}],47:[function(require,module,exports){
++},{"../../plots/cartesian/axes":121,"../../plots/plots":153,"./compute_error":47,"fast-isnumeric":11}],47:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -17886,7 +18206,7 @@ module.exports = function(traceIn, traceOut, defaultColor, opts) {
+     }
+ };
+ 
+-},{"../../lib":99,"../../plots/plots":153,"./attributes":45,"fast-isnumeric":12}],49:[function(require,module,exports){
++},{"../../lib":99,"../../plots/plots":153,"./attributes":45,"fast-isnumeric":11}],49:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -18066,7 +18386,7 @@ function errorCoords(d, xa, ya) {
+     return out;
+ }
+ 
+-},{"../../lib":99,"../../traces/scatter/subtypes":194,"d3":10,"fast-isnumeric":12}],51:[function(require,module,exports){
++},{"../../lib":99,"../../traces/scatter/subtypes":194,"d3":8,"fast-isnumeric":11}],51:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -18103,7 +18423,7 @@ module.exports = function style(traces) {
+     });
+ };
+ 
+-},{"../color":20,"d3":10}],52:[function(require,module,exports){
++},{"../color":20,"d3":8}],52:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -18457,7 +18777,7 @@ module.exports = function draw(gd) {
+     imagesAbove.each(applyAttributes);
+ };
+ 
+-},{"../../plots/cartesian/axes":121,"../drawing":43,"d3":10}],55:[function(require,module,exports){
++},{"../../plots/cartesian/axes":121,"../drawing":43,"d3":8}],55:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -18574,6 +18894,13 @@ module.exports = {
+         
+         
+     },
++    horizontalspacing: {
++        valType: 'enumerated',
++        values: ['column', 'wrapped'],
++        dflt: ['column'],
++        
++        
++    },
+     traceorder: {
+         valType: 'flaglist',
+         flags: ['reversed', 'grouped'],
+@@ -18663,6 +18990,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+ 
+     var visibleTraces = 0,
+         defaultOrder = 'normal',
++        defaultHorizontalSpacing = 'column',
+         defaultX,
+         defaultY,
+         defaultXAnchor,
+@@ -18727,6 +19055,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+     coerce('xanchor', defaultXAnchor);
+     coerce('y', defaultY);
+     coerce('yanchor', defaultYAnchor);
++    coerce('horizontalspacing', defaultHorizontalSpacing);
+     Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
+ };
+ 
+@@ -19207,7 +19536,8 @@ function computeLegendDimensions(gd, groups, traces) {
+     var fullLayout = gd._fullLayout,
+         opts = fullLayout.legend,
+         borderwidth = opts.borderwidth,
+-        isGrouped = helpers.isGrouped(opts);
++        isGrouped = helpers.isGrouped(opts),
++        isHorizontalColumn = helpers.isHorizontalColumn(opts);
+ 
+     if(helpers.isVertical(opts)) {
+         if(isGrouped) {
+@@ -19314,7 +19644,7 @@ function computeLegendDimensions(gd, groups, traces) {
+         traces.each(function(d) {
+ 
+             var legendItem = d[0],
+-                traceWidth = maxTraceWidth,
++                traceWidth = isHorizontalColumn ? maxTraceWidth : 40 + d[0],
+                 traceGap = opts.tracegroupgap || 5;
+ 
+             if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
+@@ -19403,7 +19733,7 @@ function expandHorizontalMargin(gd) {
+     });
+ }
+ 
+-},{"../../lib":99,"../../plotly":118,"../../plots/plots":153,"../color":20,"../dragelement":41,"../drawing":43,"./anchor_utils":56,"./constants":58,"./get_legend_data":61,"./helpers":62,"./style":64,"d3":10}],61:[function(require,module,exports){
++},{"../../lib":99,"../../plotly":118,"../../plots/plots":153,"../color":20,"../dragelement":41,"../drawing":43,"./anchor_utils":56,"./constants":58,"./get_legend_data":61,"./helpers":62,"./style":64,"d3":8}],61:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -19540,6 +19870,9 @@ exports.isReversed = function isReversed(legendLayout) {
+     return (legendLayout.traceorder || '').indexOf('reversed') !== -1;
+ };
+ 
++exports.isHorizontalColumn = function isReversed(legendLayout) {
++    return legendLayout.horizontalspacing === 'column';
++};
+ },{"../../plots/plots":153}],63:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+@@ -19785,7 +20118,7 @@ function stylePies(d) {
+     if(pts.size()) pts.call(stylePie, d[0], trace);
+ }
+ 
+-},{"../../lib":99,"../../plots/plots":153,"../../traces/pie/style_one":173,"../../traces/scatter/subtypes":194,"../color":20,"../drawing":43,"d3":10}],65:[function(require,module,exports){
++},{"../../lib":99,"../../plots/plots":153,"../../traces/pie/style_one":173,"../../traces/scatter/subtypes":194,"../color":20,"../drawing":43,"d3":8}],65:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -20583,7 +20916,7 @@ function createModeBar(gd, buttons) {
+ 
+ module.exports = createModeBar;
+ 
+-},{"../../../build/ploticon":2,"../../lib":99,"d3":10}],67:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":99,"d3":8}],67:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -21337,7 +21670,7 @@ function reposition(gd, buttons, opts, axName) {
+     });
+ }
+ 
+-},{"../../lib/svg_text_utils":110,"../../plotly":118,"../../plots/cartesian/axis_ids":123,"../../plots/plots":153,"../color":20,"../drawing":43,"../legend/anchor_utils":56,"./constants":70,"./get_update_object":73,"d3":10}],73:[function(require,module,exports){
++},{"../../lib/svg_text_utils":110,"../../plotly":118,"../../plots/cartesian/axis_ids":123,"../../plots/plots":153,"../color":20,"../drawing":43,"../legend/anchor_utils":56,"./constants":70,"./get_update_object":73,"d3":8}],73:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -21395,7 +21728,7 @@ function getXRange(axisLayout, buttonLayout) {
+     return [range0, range1];
+ }
+ 
+-},{"d3":10}],74:[function(require,module,exports){
++},{"d3":8}],74:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -22084,7 +22417,7 @@ function makeScatter(trace, pointPairs, w, h) {
+     return [line, markers, fill];
+ }
+ 
+-},{"../../constants/xmlns_namespaces":89,"../../lib":99,"../drawing":43,"../drawing/symbol_defs":44,"./helpers":78,"d3":10}],81:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":89,"../../lib":99,"../drawing":43,"../drawing/symbol_defs":44,"./helpers":78,"d3":8}],81:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -22965,7 +23298,7 @@ function shapeBounds(ax, v0, v1, path, paramsToUse) {
+     if(max >= min) return [min, max];
+ }
+ 
+-},{"../../lib":99,"../../lib/setcursor":108,"../../plotly":118,"../../plots/cartesian/axes":121,"../color":20,"../dragelement":41,"../drawing":43,"./attributes":81,"fast-isnumeric":12}],83:[function(require,module,exports){
++},{"../../lib":99,"../../lib/setcursor":108,"../../plotly":118,"../../plots/cartesian/axes":121,"../color":20,"../dragelement":41,"../drawing":43,"./attributes":81,"fast-isnumeric":11}],83:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -23195,7 +23528,7 @@ Titles.draw = function(gd, titleClass, options) {
+     el.classed('js-placeholder', isplaceholder);
+ };
+ 
+-},{"../../lib":99,"../../lib/svg_text_utils":110,"../../plotly":118,"../../plots/plots":153,"../color":20,"../drawing":43,"d3":10,"fast-isnumeric":12}],84:[function(require,module,exports){
++},{"../../lib":99,"../../lib/svg_text_utils":110,"../../plotly":118,"../../plots/plots":153,"../color":20,"../drawing":43,"d3":8,"fast-isnumeric":11}],84:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -23943,7 +24276,7 @@ function clearPushMargins(gd) {
+     }
+ }
+ 
+-},{"../../lib":99,"../../lib/svg_text_utils":110,"../../plotly":118,"../../plots/plots":153,"../color":20,"../drawing":43,"../legend/anchor_utils":56,"./constants":85,"d3":10}],88:[function(require,module,exports){
++},{"../../lib":99,"../../lib/svg_text_utils":110,"../../plotly":118,"../../plots/plots":153,"../color":20,"../drawing":43,"../legend/anchor_utils":56,"./constants":85,"d3":8}],88:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -24036,7 +24369,7 @@ exports.Queue = Plotly.Queue;
+ // export d3 used in the bundle
+ exports.d3 = require('d3');
+ 
+-},{"../build/ploticon":2,"./plot_api/set_plot_config":115,"./plot_api/to_image":116,"./plot_api/validate":117,"./plotly":118,"./snapshot/download":161,"d3":10}],91:[function(require,module,exports){
++},{"../build/ploticon":2,"./plot_api/set_plot_config":115,"./plot_api/to_image":116,"./plot_api/validate":117,"./plotly":118,"./snapshot/download":161,"d3":8}],91:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -24396,7 +24729,7 @@ exports.validate = function(value, opts) {
+     return out !== failed;
+ };
+ 
+-},{"../components/colorscale/get_scale":32,"../components/colorscale/scales":38,"./nested_property":103,"fast-isnumeric":12,"tinycolor2":14}],94:[function(require,module,exports){
++},{"../components/colorscale/get_scale":32,"../components/colorscale/scales":38,"./nested_property":103,"fast-isnumeric":11,"tinycolor2":14}],94:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -24735,7 +25068,7 @@ exports.parseDate = function(v) {
+     return out;
+ };
+ 
+-},{"../lib":99,"d3":10,"fast-isnumeric":12}],95:[function(require,module,exports){
++},{"../lib":99,"d3":8,"fast-isnumeric":11}],95:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -24869,7 +25202,7 @@ var Events = {
+ 
+ module.exports = Events;
+ 
+-},{"events":7}],96:[function(require,module,exports){
++},{"events":10}],96:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -25066,7 +25399,7 @@ function countryNameToISO3(countryName) {
+     Lib.warn('Unrecognized country name: ' + countryName + '.');
+ }
+ 
+-},{"../lib":99,"country-regex":9}],99:[function(require,module,exports){
++},{"../lib":99,"country-regex":7}],99:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -25686,7 +26019,7 @@ lib.numSeparate = function(value, separators) {
+     return x1 + x2;
+ };
+ 
+-},{"./coerce":93,"./dates":94,"./extend":96,"./is_plain_object":100,"./loggers":101,"./matrix":102,"./nested_property":103,"./notifier":104,"./search":107,"./stats":109,"d3":10}],100:[function(require,module,exports){
++},{"./coerce":93,"./dates":94,"./extend":96,"./is_plain_object":100,"./loggers":101,"./matrix":102,"./nested_property":103,"./notifier":104,"./search":107,"./stats":109,"d3":8}],100:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -26148,7 +26481,7 @@ function badContainer(container, propStr, propParts) {
+     };
+ }
+ 
+-},{"fast-isnumeric":12}],104:[function(require,module,exports){
++},{"fast-isnumeric":11}],104:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -26225,7 +26558,7 @@ module.exports = function(text, displayLength) {
+         });
+ };
+ 
+-},{"d3":10,"fast-isnumeric":12}],105:[function(require,module,exports){
++},{"d3":8,"fast-isnumeric":11}],105:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -26788,7 +27121,7 @@ exports.roundUp = function(val, arrayIn, reverse) {
+     return arrayIn[low];
+ };
+ 
+-},{"../lib":99,"fast-isnumeric":12}],108:[function(require,module,exports){
++},{"../lib":99,"fast-isnumeric":11}],108:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -26907,7 +27240,7 @@ exports.interp = function(arr, n) {
+     return frac * arr[Math.ceil(n)] + (1 - frac) * arr[Math.floor(n)];
+ };
+ 
+-},{"fast-isnumeric":12}],110:[function(require,module,exports){
++},{"fast-isnumeric":11}],110:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -27408,7 +27741,7 @@ util.makeEditable = function(context, _delegate, options) {
+     return d3.rebind(this, dispatch, 'on');
+ };
+ 
+-},{"../constants/xmlns_namespaces":89,"../lib":99,"../plotly":118,"d3":10}],111:[function(require,module,exports){
++},{"../constants/xmlns_namespaces":89,"../lib":99,"../plotly":118,"d3":8}],111:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -30559,7 +30892,7 @@ function drawMainTitle(gd) {
+     });
+ }
+ 
+-},{"../components/color":20,"../components/drawing":43,"../components/errorbars":49,"../components/images":55,"../components/legend":63,"../components/modebar/manage":67,"../components/rangeselector":74,"../components/rangeslider":79,"../components/shapes":82,"../components/titles":83,"../components/updatemenus":88,"../constants/xmlns_namespaces":89,"../lib":99,"../lib/events":95,"../lib/queue":106,"../plotly":118,"../plots/cartesian/graph_interact":128,"../plots/plots":153,"d3":10,"fast-isnumeric":12,"gl-mat4/fromQuat":13}],113:[function(require,module,exports){
++},{"../components/color":20,"../components/drawing":43,"../components/errorbars":49,"../components/images":55,"../components/legend":63,"../components/modebar/manage":67,"../components/rangeselector":74,"../components/rangeslider":79,"../components/shapes":82,"../components/titles":83,"../components/updatemenus":88,"../constants/xmlns_namespaces":89,"../lib":99,"../lib/events":95,"../lib/queue":106,"../plotly":118,"../plots/cartesian/graph_interact":128,"../plots/plots":153,"d3":8,"fast-isnumeric":11,"gl-mat4/fromQuat":12}],113:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -31147,7 +31480,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":99,"../plotly":118,"../snapshot":163,"fast-isnumeric":12}],117:[function(require,module,exports){
++},{"../lib":99,"../plotly":118,"../snapshot":163,"fast-isnumeric":11}],117:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -31635,7 +31968,7 @@ exports.PlotSchema = require('./plot_api/plot_schema');
+ // imaging routines
+ exports.Snapshot = require('./snapshot');
+ 
+-},{"../build/plotcss":1,"./components/annotations":18,"./components/color":20,"./components/colorbar":25,"./components/colorscale":34,"./components/drawing":43,"./components/errorbars":49,"./components/images":55,"./components/legend":63,"./components/modebar":66,"./components/shapes":82,"./components/updatemenus":88,"./fonts/mathjax_config":91,"./lib":99,"./lib/queue":106,"./lib/svg_text_utils":110,"./plot_api/plot_api":112,"./plot_api/plot_config":113,"./plot_api/plot_schema":114,"./plots/cartesian/axes":121,"./plots/cartesian/graph_interact":128,"./plots/plots":153,"./plots/polar/micropolar":156,"./snapshot":163,"./traces/scatter":185,"es6-promise":11}],119:[function(require,module,exports){
++},{"../build/plotcss":1,"./components/annotations":18,"./components/color":20,"./components/colorbar":25,"./components/colorscale":34,"./components/drawing":43,"./components/errorbars":49,"./components/images":55,"./components/legend":63,"./components/modebar":66,"./components/shapes":82,"./components/updatemenus":88,"./fonts/mathjax_config":91,"./lib":99,"./lib/queue":106,"./lib/svg_text_utils":110,"./plot_api/plot_api":112,"./plot_api/plot_config":113,"./plot_api/plot_schema":114,"./plots/cartesian/axes":121,"./plots/cartesian/graph_interact":128,"./plots/plots":153,"./plots/polar/micropolar":156,"./snapshot":163,"./traces/scatter":185,"es6-promise":9}],119:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -31918,14 +32251,27 @@ axes.getAutoRange = function(ax) {
+     }
+ 
+     if(minmin === maxmax) {
+-        newRange = axReverse ?
+-            [minmin + 1, ax.rangemode !== 'normal' ? 0 : minmin - 1] :
+-            [ax.rangemode !== 'normal' ? 0 : minmin - 1, minmin + 1];
++        var lower = minmin - 1;
++        var upper = minmin + 1;
++        if(ax.rangemode === 'tozero') {
++            newRange = minmin < 0 ? [lower, 0] : [0, upper];
++        }
++        else if(ax.rangemode === 'nonnegative') {
++            newRange = [Math.max(0, lower), Math.max(0, upper)];
++        }
++        else {
++            newRange = [lower, upper];
++        }
+     }
+     else if(mbest) {
+         if(ax.type === 'linear' || ax.type === '-') {
+-            if(ax.rangemode === 'tozero' && minbest.val >= 0) {
+-                minbest = {val: 0, pad: 0};
++            if(ax.rangemode === 'tozero') {
++                if(minbest.val >= 0) {
++                    minbest = {val: 0, pad: 0};
++                }
++                if(maxbest.val <= 0) {
++                    maxbest = {val: 0, pad: 0};
++                }
+             }
+             else if(ax.rangemode === 'nonnegative') {
+                 if(minbest.val - mbest * minbest.pad < 0) {
+@@ -31939,22 +32285,39 @@ axes.getAutoRange = function(ax) {
+             // in case it changed again...
+             mbest = (maxbest.val - minbest.val) /
+                 (ax._length - minbest.pad - maxbest.pad);
++
+         }
+ 
+         newRange = [
+             minbest.val - mbest * minbest.pad,
+             maxbest.val + mbest * maxbest.pad
+         ];
++    }
+ 
+-        // don't let axis have zero size
+-        if(newRange[0] === newRange[1]) {
++    // don't let axis have zero size, while still respecting tozero and nonnegative
++    if(newRange[0] === newRange[1]) {
++        if(ax.rangemode === 'tozero') {
++            if(newRange[0] < 0) {
++                newRange = [newRange[0], 0];
++            }
++            else if(newRange[0] > 0) {
++                newRange = [0, newRange[0]];
++            }
++            else {
++                newRange = [0, 1];
++            }
++        }
++        else {
+             newRange = [newRange[0] - 1, newRange[0] + 1];
++            if(ax.rangemode === 'nonnegative') {
++                newRange[0] = Math.max(0, newRange[0]);
++            }
+         }
++    }
+ 
+-        // maintain reversal
+-        if(axReverse) {
+-            newRange.reverse();
+-        }
++    // maintain reversal
++    if(axReverse) {
++        newRange.reverse();
+     }
+ 
+     return newRange;
+@@ -33737,7 +34100,7 @@ function swapAxisAttrs(layout, key, xFullAxes, yFullAxes) {
+ // rather than built-in % which gives a negative value for negative v
+ function mod(v, d) { return ((v % d) + d) % d; }
+ 
+-},{"../../components/color":20,"../../components/drawing":43,"../../components/titles":83,"../../lib":99,"../../lib/svg_text_utils":110,"../../plotly":118,"./axis_ids":123,"./layout_attributes":130,"./layout_defaults":131,"./set_convert":135,"d3":10,"fast-isnumeric":12}],122:[function(require,module,exports){
++},{"../../components/color":20,"../../components/drawing":43,"../../components/titles":83,"../../lib":99,"../../lib/svg_text_utils":110,"../../plotly":118,"./axis_ids":123,"./layout_attributes":130,"./layout_defaults":131,"./set_convert":135,"d3":8,"fast-isnumeric":11}],122:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -34020,7 +34383,7 @@ function category(a) {
+     return curvecats > curvenums * 2;
+ }
+ 
+-},{"../../components/color/attributes":19,"../../lib":99,"../plots":153,"./axis_ids":123,"./category_order_defaults":124,"./clean_datum":125,"./layout_attributes":130,"./ordered_categories":132,"./set_convert":135,"./tick_label_defaults":136,"./tick_mark_defaults":137,"./tick_value_defaults":138,"fast-isnumeric":12,"tinycolor2":14}],123:[function(require,module,exports){
++},{"../../components/color/attributes":19,"../../lib":99,"../plots":153,"./axis_ids":123,"./category_order_defaults":124,"./clean_datum":125,"./layout_attributes":130,"./ordered_categories":132,"./set_convert":135,"./tick_label_defaults":136,"./tick_mark_defaults":137,"./tick_value_defaults":138,"fast-isnumeric":11,"tinycolor2":14}],123:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -34214,7 +34577,7 @@ module.exports = function cleanDatum(c) {
+     return c;
+ };
+ 
+-},{"../../lib":99,"fast-isnumeric":12}],126:[function(require,module,exports){
++},{"../../lib":99,"fast-isnumeric":11}],126:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -34981,7 +35344,7 @@ function isSelectOrLasso(dragmode) {
+     return modes.indexOf(dragmode) !== -1;
+ }
+ 
+-},{"../../components/color":20,"../../components/dragelement":41,"../../components/drawing":43,"../../lib":99,"../../lib/setcursor":108,"../../lib/svg_text_utils":110,"../../plotly":118,"./axes":121,"./constants":126,"./select":134,"d3":10,"tinycolor2":14}],128:[function(require,module,exports){
++},{"../../components/color":20,"../../components/dragelement":41,"../../components/drawing":43,"../../lib":99,"../../lib/setcursor":108,"../../lib/svg_text_utils":110,"../../plotly":118,"./axes":121,"./constants":126,"./select":134,"d3":8,"tinycolor2":14}],128:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -36323,7 +36686,7 @@ fx.inbox = function(v0, v1) {
+     return Infinity;
+ };
+ 
+-},{"../../components/color":20,"../../components/dragelement":41,"../../components/drawing":43,"../../lib":99,"../../lib/events":95,"../../lib/svg_text_utils":110,"./axes":121,"./constants":126,"./dragbox":127,"d3":10,"fast-isnumeric":12,"tinycolor2":14}],129:[function(require,module,exports){
++},{"../../components/color":20,"../../components/dragelement":41,"../../components/drawing":43,"../../lib":99,"../../lib/events":95,"../../lib/svg_text_utils":110,"./axes":121,"./constants":126,"./dragbox":127,"d3":8,"fast-isnumeric":11,"tinycolor2":14}],129:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -37007,7 +37370,7 @@ module.exports = function orderedCategories(axisLetter, categoryorder, categorya
+     }
+ };
+ 
+-},{"d3":10}],133:[function(require,module,exports){
++},{"d3":8}],133:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -37072,7 +37435,7 @@ module.exports = function handlePositionDefaults(containerIn, containerOut, coer
+     return containerOut;
+ };
+ 
+-},{"../../lib":99,"fast-isnumeric":12}],134:[function(require,module,exports){
++},{"../../lib":99,"fast-isnumeric":11}],134:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -37516,7 +37879,7 @@ module.exports = function setConvert(ax) {
+     ax._forceTick0 = null;
+ };
+ 
+-},{"../../lib":99,"./axis_ids":123,"./clean_datum":125,"./constants":126,"d3":10,"fast-isnumeric":12}],136:[function(require,module,exports){
++},{"../../lib":99,"./axis_ids":123,"./clean_datum":125,"./constants":126,"d3":8,"fast-isnumeric":11}],136:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -37673,7 +38036,7 @@ module.exports = function handleTickValueDefaults(containerIn, containerOut, coe
+     }
+ };
+ 
+-},{"fast-isnumeric":12}],139:[function(require,module,exports){
++},{"fast-isnumeric":11}],139:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -38356,7 +38719,7 @@ function createMockAxis(fullLayout) {
+     return mockAxis;
+ }
+ 
+-},{"../../components/color":20,"../../components/drawing":43,"../../constants/xmlns_namespaces":89,"../../lib/filter_visible":97,"../../lib/topojson_utils":111,"../../plots/cartesian/axes":121,"./constants":140,"./projections":148,"./set_scale":149,"./zoom":150,"./zoom_reset":151,"d3":10,"topojson":15}],142:[function(require,module,exports){
++},{"../../components/color":20,"../../components/drawing":43,"../../constants/xmlns_namespaces":89,"../../lib/filter_visible":97,"../../lib/topojson_utils":111,"../../plots/cartesian/axes":121,"./constants":140,"./projections":148,"./set_scale":149,"./zoom":150,"./zoom_reset":151,"d3":8,"topojson":15}],142:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -39561,7 +39924,7 @@ function getBounds(projection, rangeBox) {
+     return d3.geo.path().projection(projection).bounds(rangeBox);
+ }
+ 
+-},{"./constants":140,"d3":10}],150:[function(require,module,exports){
++},{"./constants":140,"d3":8}],150:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -39988,7 +40351,7 @@ function d3_eventDispatch(target) {
+     return dispatch;
+ }
+ 
+-},{"d3":10}],151:[function(require,module,exports){
++},{"d3":8}],151:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -41379,7 +41742,7 @@ plots.graphJson = function(gd, dataonly, mode, output, useDefaults) {
+     return (output === 'object') ? obj : JSON.stringify(obj);
+ };
+ 
+-},{"../components/color":20,"../lib":99,"../plotly":118,"./attributes":119,"./font_attributes":139,"./layout_attributes":152,"d3":10,"fast-isnumeric":12}],154:[function(require,module,exports){
++},{"../components/color":20,"../lib":99,"../plotly":118,"./attributes":119,"./font_attributes":139,"./layout_attributes":152,"d3":8,"fast-isnumeric":11}],154:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -42942,7 +43305,7 @@ var extendDeepAll = Plotly.Lib.extendDeepAll;
+     return exports;
+ };
+ 
+-},{"../../plotly":118,"./micropolar_manager":157,"d3":10}],157:[function(require,module,exports){
++},{"../../plotly":118,"./micropolar_manager":157,"d3":8}],157:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43025,7 +43388,7 @@ manager.fillLayout = function(_gd) {
+     _gd._fullLayout = extendDeepAll(dflts, _gd.layout);
+ };
+ 
+-},{"../../plotly":118,"./undo_manager":158,"d3":10}],158:[function(require,module,exports){
++},{"../../plotly":118,"./undo_manager":158,"d3":8}],158:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43632,7 +43995,7 @@ function svgToImg(opts) {
+ 
+ module.exports = svgToImg;
+ 
+-},{"../lib":99,"events":7}],165:[function(require,module,exports){
++},{"../lib":99,"events":10}],165:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43711,7 +44074,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":99,"../plotly":118,"events":7}],166:[function(require,module,exports){
++},{"../lib":99,"../plotly":118,"events":10}],166:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43823,7 +44186,7 @@ module.exports = function toSVG(gd, format) {
+     return s;
+ };
+ 
+-},{"../components/color":20,"../components/drawing":43,"../constants/xmlns_namespaces":89,"../lib/svg_text_utils":110,"d3":10}],167:[function(require,module,exports){
++},{"../components/color":20,"../components/drawing":43,"../constants/xmlns_namespaces":89,"../lib/svg_text_utils":110,"d3":8}],167:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44196,7 +44559,7 @@ function makeEventDataFunc(trace) {
+     };
+ }
+ 
+-},{"../../components/color":20,"../../components/colorscale/get_scale":32,"../../components/colorscale/make_scale_function":37,"../../components/drawing":43,"../../lib/array_to_calc_item":92,"../../lib/geo_location_utils":98,"../../lib/topojson_utils":111,"../../plots/cartesian/axes":121,"../../plots/cartesian/graph_interact":128,"../../plots/geo/constants":140,"./attributes":167,"d3":10}],172:[function(require,module,exports){
++},{"../../components/color":20,"../../components/colorscale/get_scale":32,"../../components/colorscale/make_scale_function":37,"../../components/drawing":43,"../../lib/array_to_calc_item":92,"../../lib/geo_location_utils":98,"../../lib/topojson_utils":111,"../../plots/cartesian/axes":121,"../../plots/cartesian/graph_interact":128,"../../plots/geo/constants":140,"./attributes":167,"d3":8}],172:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44242,7 +44605,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(trace.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":23,"../../components/colorscale/get_scale":32,"../../lib":99,"../../plots/plots":153,"d3":10,"fast-isnumeric":12}],173:[function(require,module,exports){
++},{"../../components/colorbar/draw":23,"../../components/colorscale/get_scale":32,"../../lib":99,"../../plots/plots":153,"d3":8,"fast-isnumeric":11}],173:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44684,7 +45047,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":99,"../../plots/cartesian/axes":121,"./colorscale_calc":179,"./subtypes":194,"fast-isnumeric":12}],177:[function(require,module,exports){
++},{"../../lib":99,"../../plots/cartesian/axes":121,"./colorscale_calc":179,"./subtypes":194,"fast-isnumeric":11}],177:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44778,7 +45141,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(marker.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":23,"../../components/colorscale/get_scale":32,"../../lib":99,"../../plots/plots":153,"d3":10,"fast-isnumeric":12}],179:[function(require,module,exports){
++},{"../../components/colorbar/draw":23,"../../components/colorscale/get_scale":32,"../../lib":99,"../../plots/plots":153,"d3":8,"fast-isnumeric":11}],179:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45472,7 +45835,7 @@ module.exports = function makeBubbleSizeFn(trace) {
+     };
+ };
+ 
+-},{"fast-isnumeric":12}],190:[function(require,module,exports){
++},{"fast-isnumeric":11}],190:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45825,7 +46188,7 @@ function selectMarkers(gd, plotinfo, cdscatter) {
+     });
+ }
+ 
+-},{"../../components/drawing":43,"../../components/errorbars":49,"../../lib":99,"../../lib/polygon":105,"./arrays_to_calcdata":174,"./line_points":187,"./subtypes":194,"d3":10}],192:[function(require,module,exports){
++},{"../../components/drawing":43,"../../components/errorbars":49,"../../lib":99,"../../lib/polygon":105,"./arrays_to_calcdata":174,"./line_points":187,"./subtypes":194,"d3":8}],192:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45938,7 +46301,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/drawing":43,"../../components/errorbars":49,"d3":10}],194:[function(require,module,exports){
++},{"../../components/drawing":43,"../../components/errorbars":49,"d3":8}],194:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46542,5 +46905,5 @@ function makeEventDataFunc(trace) {
+     };
+ }
+ 
+-},{"../../components/color":20,"../../components/drawing":43,"../../lib/array_to_calc_item":92,"../../lib/geo_location_utils":98,"../../lib/topojson_utils":111,"../../plots/cartesian/axes":121,"../../plots/cartesian/graph_interact":128,"../scatter/subtypes":194,"./attributes":197,"d3":10}]},{},[5])(5)
++},{"../../components/color":20,"../../components/drawing":43,"../../lib/array_to_calc_item":92,"../../lib/geo_location_utils":98,"../../lib/topojson_utils":111,"../../plots/cartesian/axes":121,"../../plots/cartesian/graph_interact":128,"../scatter/subtypes":194,"./attributes":197,"d3":8}]},{},[5])(5)
+ });
+\ No newline at end of file
+diff --git a/dist/plotly-geo.min.js b/dist/plotly-geo.min.js
+index 67f63b3..002ce48 100644
+--- a/dist/plotly-geo.min.js
++++ b/dist/plotly-geo.min.js
+@@ -4,22 +4,22 @@
+ * All rights reserved.
+ * Licensed under the MIT license
+ */
+-!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var e;e="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,e.Plotly=t()}}(function(){var t;return function e(t,n,r){function a(i,l){if(!n[i]){if(!t[i]){var s="function"==typeof require&&require;if(!l&&s)return s(i,!0);if(o)return o(i,!0);var c=new Error("Cannot find module '"+i+"'");throw c.code="MODULE_NOT_FOUND",c}var u=n[i]={exports:{}};t[i][0].call(u.exports,function(e){var n=t[i][1][e];return a(n?n:e)},u,u.exports,e,t,n,r)}return n[i].exports}for(var o="function"==typeof require&&require,i=0;i<r.length;i++)a(r[i]);return a}({1:[function(t,e,n){"use strict";var r=t("../src/plotly"),a={"X,X div":"font-family:'Open Sans', verdana, arial, sans-serif;margin:0;padding:0;","X input,X button":"font-family:'Open Sans', verdana, arial, sans-serif;","X input:focus,X 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0===n.pad?12:n.pad;n.l+n.r>.5*r.width&&(n.l=n.r=0),n.b+n.t>.5*r.height&&(n.b=n.t=0),r._pushmargin[e]={l:{val:n.x,size:n.l+a},r:{val:n.x,size:n.r+a},b:{val:n.y,size:n.b+a},t:{val:n.y,size:n.t+a}}}else delete r._pushmargin[e];t._replotting||h.doAutoMargin(t)}},h.doAutoMargin=function(t){var e=t._fullLayout;e._size||(e._size={}),e._pushmargin||(e._pushmargin={});var n=e._size,r=JSON.stringify(n),a=Math.max(e.margin.l||0,0),o=Math.max(e.margin.r||0,0),i=Math.max(e.margin.t||0,0),l=Math.max(e.margin.b||0,0),s=e._pushmargin;return e.margin.autoexpand!==!1&&(s.base={l:{val:0,size:a},r:{val:1,size:o},t:{val:1,size:i},b:{val:0,size:l}},Object.keys(s).forEach(function(t){var n=s[t].l||{},r=s[t].b||{},u=n.val,f=n.size,d=r.val,h=r.size;Object.keys(s).forEach(function(t){if(c(f)&&s[t].r){var n=s[t].r.val,r=s[t].r.size;if(n>u){var p=(f*n+(r-e.width)*u)/(n-u),g=(r*(1-u)+(f-e.width)*(1-n))/(n-u);p>=0&&g>=0&&p+g>a+o&&(a=p,o=g)}}if(c(h)&&s[t].t){var v=s[t].t.val,m=s[t].t.size;if(v>d){var y=(h*v+(m-e.height)*d)/(v-d),x=(m*(1-d)+(h-e.height)*(1-v))/(v-d);y>=0&&x>=0&&y+x>l+i&&(l=y,i=x)}}})})),n.l=Math.round(a),n.r=Math.round(o),n.t=Math.round(i),n.b=Math.round(l),n.p=Math.round(e.margin.pad),n.w=Math.round(e.width)-n.l-n.r,n.h=Math.round(e.height)-n.t-n.b,t._replotting||"{}"===r||r===JSON.stringify(e._size)?void 0:u.plot(t)},h.graphJson=function(t,e,n,r,a){function o(t){if("function"==typeof t)return null;if(f.isPlainObject(t)){var e,r,a={};for(e in t)if("function"!=typeof t[e]&&-1===["_","["].indexOf(e.charAt(0))){if("keepdata"===n){if("src"===e.substr(e.length-3))continue}else if("keepstream"===n){if(r=t[e+"src"],"string"==typeof r&&r.indexOf(":")>0&&!f.isPlainObject(t.stream))continue}else if("keepall"!==n&&(r=t[e+"src"],"string"==typeof r&&r.indexOf(":")>0))continue;a[e]=o(t[e])}return a}return Array.isArray(t)?t.map(o):t&&t.getTime?f.ms2DateTime(t):t}(a&&e&&!t._fullData||a&&!e&&!t._fullLayout)&&h.supplyDefaults(t);var i=a?t._fullData:t.data,l=a?t._fullLayout:t.layout,s={data:(i||[]).map(function(t){var n=o(t);return e&&delete n.fit,n})};return e||(s.layout=o(l)),t.framework&&t.framework.isPolar&&(s=t.framework.getConfig()),"object"===r?s:JSON.stringify(s)}},{"../components/color":20,"../lib":99,"../plotly":118,"./attributes":119,"./font_attributes":139,"./layout_attributes":152,d3:10,"fast-isnumeric":12}],154:[function(t,e,n){"use strict";var r=t("../../traces/scatter/attributes"),a=r.marker;e.exports={r:r.r,t:r.t,marker:{color:a.color,size:a.size,symbol:a.symbol,opacity:a.opacity}}},{"../../traces/scatter/attributes":175}],155:[function(t,e,n){"use strict";function r(t,e){var n={showline:{valType:"boolean"},showticklabels:{valType:"boolean"},tickorientation:{valType:"enumerated",values:["horizontal","vertical"]},ticklen:{valType:"number",min:0},tickcolor:{valType:"color"},ticksuffix:{valType:"string"},endpadding:{valType:"number"},visible:{valType:"boolean"}};return o({},e,n)}var a=t("../cartesian/layout_attributes"),o=t("../../lib/extend").extendFlat,i=o({},a.domain,{});e.exports={radialaxis:r("radial",{range:{valType:"info_array",items:[{valType:"number"},{valType:"number"}]},domain:i,orientation:{valType:"number"}}),angularaxis:r("angular",{range:{valType:"info_array",items:[{valType:"number",dflt:0},{valType:"number",dflt:360}]},domain:i}),layout:{direction:{valType:"enumerated",values:["clockwise","counterclockwise"]},orientation:{valType:"angle"}}}},{"../../lib/extend":96,"../cartesian/layout_attributes":130}],156:[function(t,e,n){var r=t("../../plotly"),a=t("d3"),o=e.exports={version:"0.2.2",manager:t("./micropolar_manager")},i=r.Lib.extendDeepAll;o.Axis=function(){function t(t){n=t||n;var c=s.data,f=s.layout;return("string"==typeof n||n.nodeName)&&(n=a.select(n)),n.datum(c).each(function(t,n){function s(t,e){return l(t)%360+f.orientation}var c=t.slice();u={data:o.util.cloneJson(c),layout:o.util.cloneJson(f)};var d=0;c.forEach(function(t,e){t.color||(t.color=f.defaultColorRange[d],d=(d+1)%f.defaultColorRange.length),t.strokeColor||(t.strokeColor="LinePlot"===t.geometry?t.color:a.rgb(t.color).darker().toString()),u.data[e].color=t.color,u.data[e].strokeColor=t.strokeColor,u.data[e].strokeDash=t.strokeDash,u.data[e].strokeSize=t.strokeSize});var h=c.filter(function(t,e){var n=t.visible;return"undefined"==typeof n||n===!0}),p=!1,g=h.map(function(t,e){return p=p||"undefined"!=typeof t.groupId,t});if(p){var v=a.nest().key(function(t,e){return"undefined"!=typeof t.groupId?t.groupId:"unstacked"}).entries(g),m=[],y=v.map(function(t,e){if("unstacked"===t.key)return t.values;var n=t.values[0].r.map(function(t,e){return 0});return t.values.forEach(function(t,e,r){t.yStack=[n],m.push(n),n=o.util.sumArrays(t.r,n)}),t.values});h=a.merge(y)}h.forEach(function(t,e){t.t=Array.isArray(t.t[0])?t.t:[t.t],t.r=Array.isArray(t.r[0])?t.r:[t.r]});var x=Math.min(f.width-f.margin.left-f.margin.right,f.height-f.margin.top-f.margin.bottom)/2;x=Math.max(10,x);var b,_=[f.margin.left+x,f.margin.top+x];if(p){var w=a.max(o.util.sumArrays(o.util.arrayLast(h).r[0],o.util.arrayLast(m)));b=[0,w]}else b=a.extent(o.util.flattenArray(h.map(function(t,e){return t.r})));f.radialAxis.domain!=o.DATAEXTENT&&(b[0]=0),r=a.scale.linear().domain(f.radialAxis.domain!=o.DATAEXTENT&&f.radialAxis.domain?f.radialAxis.domain:b).range([0,x]),u.layout.radialAxis.domain=r.domain();var k,M=o.util.flattenArray(h.map(function(t,e){return t.t})),A="string"==typeof M[0];A&&(M=o.util.deduplicate(M),k=M.slice(),M=a.range(M.length),h=h.map(function(t,e){var n=t;return t.t=[M],p&&(n.yStack=t.yStack),n}));var T=h.filter(function(t,e){return"LinePlot"===t.geometry||"DotPlot"===t.geometry}).length===h.length,L=null===f.needsEndSpacing?A||!T:f.needsEndSpacing,z=f.angularAxis.domain&&f.angularAxis.domain!=o.DATAEXTENT&&!A&&f.angularAxis.domain[0]>=0,S=z?f.angularAxis.domain:a.extent(M),C=Math.abs(M[1]-M[0]);T&&!A&&(C=0);var E=S.slice();L&&A&&(E[1]+=C);var O=f.angularAxis.ticksCount||4;O>8&&(O=O/(O/8)+O%8),f.angularAxis.ticksStep&&(O=(E[1]-E[0])/O);var N=f.angularAxis.ticksStep||(E[1]-E[0])/(O*(f.minorTicks+1));k&&(N=Math.max(Math.round(N),1)),E[2]||(E[2]=N);var P=a.range.apply(this,E);if(P=P.map(function(t,e){return parseFloat(t.toPrecision(12))}),l=a.scale.linear().domain(E.slice(0,2)).range("clockwise"===f.direction?[0,360]:[360,0]),u.layout.angularAxis.domain=l.domain(),u.layout.angularAxis.endPadding=L?C:0,e=a.select(this).select("svg.chart-root"),"undefined"==typeof e||e.empty()){var j="<svg xmlns='http://www.w3.org/2000/svg' class='chart-root'>' + '<g class='outer-group'>' + '<g class='chart-group'>' + '<circle class='background-circle'></circle>' + '<g class='geometry-group'></g>' + '<g class='radial axis-group'>' + '<circle class='outside-circle'></circle>' + '</g>' + '<g class='angular axis-group'></g>' + '<g class='guides-group'><line></line><circle r='0'></circle></g>' + '</g>' + '<g class='legend-group'></g>' + '<g class='tooltips-group'></g>' + '<g class='title-group'><text></text></g>' + '</g>' + '</svg>",D=(new DOMParser).parseFromString(j,"application/xml"),R=this.appendChild(this.ownerDocument.importNode(D.documentElement,!0));e=a.select(R)}e.select(".guides-group").style({"pointer-events":"none"}),e.select(".angular.axis-group").style({"pointer-events":"none"}),e.select(".radial.axis-group").style({"pointer-events":"none"});var I,q=e.select(".chart-group"),F={fill:"none",stroke:f.tickColor},B={"font-size":f.font.size,"font-family":f.font.family,fill:f.font.color,"text-shadow":["-1px 0px","1px -1px","-1px 1px","1px 1px"].map(function(t,e){return" "+t+" 0 "+f.font.outlineColor}).join(",")};if(f.showLegend){I=e.select(".legend-group").attr({transform:"translate("+[x,f.margin.top]+")"}).style({display:"block"});var H=h.map(function(t,e){var n=o.util.cloneJson(t);return n.symbol="DotPlot"===t.geometry?t.dotType||"circle":"LinePlot"!=t.geometry?"square":"line",n.visibleInLegend="undefined"==typeof t.visibleInLegend||t.visibleInLegend,n.color="LinePlot"===t.geometry?t.strokeColor:t.color,n});o.Legend().config({data:h.map(function(t,e){return t.name||"Element"+e}),legendConfig:i({},o.Legend.defaultConfig().legendConfig,{container:I,elements:H,reverseOrder:f.legend.reverseOrder})})();var V=I.node().getBBox();x=Math.min(f.width-V.width-f.margin.left-f.margin.right,f.height-f.margin.top-f.margin.bottom)/2,x=Math.max(10,x),_=[f.margin.left+x,f.margin.top+x],r.range([0,x]),u.layout.radialAxis.domain=r.domain(),I.attr("transform","translate("+[_[0]+x,_[1]-x]+")")}else I=e.select(".legend-group").style({display:"none"});e.attr({width:f.width,height:f.height}).style({opacity:f.opacity}),q.attr("transform","translate("+_+")").style({cursor:"crosshair"});var U=[(f.width-(f.margin.left+f.margin.right+2*x+(V?V.width:0)))/2,(f.height-(f.margin.top+f.margin.bottom+2*x))/2];if(U[0]=Math.max(0,U[0]),U[1]=Math.max(0,U[1]),e.select(".outer-group").attr("transform","translate("+U+")"),f.title){var G=e.select("g.title-group text").style(B).text(f.title),Z=G.node().getBBox();G.attr({x:_[0]-Z.width/2,y:_[1]-x-20})}var Y=e.select(".radial.axis-group");if(f.radialAxis.gridLinesVisible){var X=Y.selectAll("circle.grid-circle").data(r.ticks(5));X.enter().append("circle").attr({"class":"grid-circle"}).style(F),X.attr("r",r),X.exit().remove()}Y.select("circle.outside-circle").attr({r:x}).style(F);var Q=e.select("circle.background-circle").attr({r:x}).style({fill:f.backgroundColor,stroke:f.stroke});if(f.radialAxis.visible){var 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e%(f.minorTicks+1)==0}).classed("minor",function(t,e){return!(e%(f.minorTicks+1)==0)}).style(F),J.selectAll(".minor").style({stroke:f.minorTickColor}),W.select("line.grid-line").attr({x1:f.tickLength?x-f.tickLength:0,x2:x}).style({display:f.angularAxis.gridLinesVisible?"block":"none"}),J.append("text").classed("axis-text",!0).style(B);var K=W.select("text.axis-text").attr({x:x+f.labelOffset,dy:".35em",transform:function(t,e){var n=s(t,e),r=x+f.labelOffset,a=f.angularAxis.tickOrientation;return"horizontal"==a?"rotate("+-n+" "+r+" 0)":"radial"==a?270>n&&n>90?"rotate(180 "+r+" 0)":null:"rotate("+(180>=n&&n>0?-90:90)+" "+r+" 0)"}}).style({"text-anchor":"middle",display:f.angularAxis.labelsVisible?"block":"none"}).text(function(t,e){return e%(f.minorTicks+1)!=0?"":k?k[t]+f.angularAxis.ticksSuffix:t+f.angularAxis.ticksSuffix}).style(B);f.angularAxis.rewriteTicks&&K.text(function(t,e){return e%(f.minorTicks+1)!=0?"":f.angularAxis.rewriteTicks(this.textContent,e)});var tt=a.max(q.selectAll(".angular-tick text")[0].map(function(t,e){return t.getCTM().e+t.getBBox().width}));I.attr({transform:"translate("+[x+tt,f.margin.top]+")"});var et=e.select("g.geometry-group").selectAll("g").size()>0,nt=e.select("g.geometry-group").selectAll("g.geometry").data(h);if(nt.enter().append("g").attr({"class":function(t,e){return"geometry geometry"+e}}),nt.exit().remove(),h[0]||et){var rt=[];h.forEach(function(t,e){var n={};n.radialScale=r,n.angularScale=l,n.container=nt.filter(function(t,n){return n==e}),n.geometry=t.geometry,n.orientation=f.orientation,n.direction=f.direction,n.index=e,rt.push({data:t,geometryConfig:n})});var at=a.nest().key(function(t,e){return"undefined"!=typeof t.data.groupId||"unstacked"}).entries(rt),ot=[];at.forEach(function(t,e){"unstacked"===t.key?ot=ot.concat(t.values.map(function(t,e){return[t]})):ot.push(t.values)}),ot.forEach(function(t,e){var n;n=Array.isArray(t)?t[0].geometryConfig.geometry:t.geometryConfig.geometry;var r=t.map(function(t,e){return i(o[n].defaultConfig(),t)});o[n]().config(r)()})}var it,lt,st=e.select(".guides-group"),ct=e.select(".tooltips-group"),ut=o.tooltipPanel().config({container:ct,fontSize:8})(),ft=o.tooltipPanel().config({container:ct,fontSize:8})(),dt=o.tooltipPanel().config({container:ct,hasTick:!0})();if(!A){var ht=st.select("line").attr({x1:0,y1:0,y2:0}).style({stroke:"grey","pointer-events":"none"});q.on("mousemove.angular-guide",function(t,e){var n=o.util.getMousePos(Q).angle;ht.attr({x2:-x,transform:"rotate("+n+")"}).style({opacity:.5});var r=(n+180+360-f.orientation)%360;it=l.invert(r);var a=o.util.convertToCartesian(x+12,n+180);ut.text(o.util.round(it)).move([a[0]+_[0],a[1]+_[1]])}).on("mouseout.angular-guide",function(t,e){st.select("line").style({opacity:0})})}var pt=st.select("circle").style({stroke:"grey",fill:"none"});q.on("mousemove.radial-guide",function(t,e){var n=o.util.getMousePos(Q).radius;pt.attr({r:n}).style({opacity:.5}),lt=r.invert(o.util.getMousePos(Q).radius);var a=o.util.convertToCartesian(n,f.radialAxis.orientation);ft.text(o.util.round(lt)).move([a[0]+_[0],a[1]+_[1]])}).on("mouseout.radial-guide",function(t,e){pt.style({opacity:0}),dt.hide(),ut.hide(),ft.hide()}),e.selectAll(".geometry-group .mark").on("mouseover.tooltip",function(t,n){var r=a.select(this),i=r.style("fill"),l="black",s=r.style("opacity")||1;if(r.attr({"data-opacity":s}),"none"!=i){r.attr({"data-fill":i}),l=a.hsl(i).darker().toString(),r.style({fill:l,opacity:1});var c={t:o.util.round(t[0]),r:o.util.round(t[1])};A&&(c.t=k[t[0]]);var u="t: "+c.t+", r: "+c.r,f=this.getBoundingClientRect(),d=e.node().getBoundingClientRect(),h=[f.left+f.width/2-U[0]-d.left,f.top+f.height/2-U[1]-d.top];dt.config({color:l}).text(u),dt.move(h)}else 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tt=a.max(F.selectAll(".angular-tick text")[0].map(function(t,e){return t.getCTM().e+t.getBBox().width}));I.attr({transform:"translate("+[x+tt,f.margin.top]+")"});var et=e.select("g.geometry-group").selectAll("g").size()>0,nt=e.select("g.geometry-group").selectAll("g.geometry").data(h);if(nt.enter().append("g").attr({class:function(t,e){return"geometry geometry"+e}}),nt.exit().remove(),h[0]||et){var rt=[];h.forEach(function(t,e){var n={};n.radialScale=r,n.angularScale=l,n.container=nt.filter(function(t,n){return n==e}),n.geometry=t.geometry,n.orientation=f.orientation,n.direction=f.direction,n.index=e,rt.push({data:t,geometryConfig:n})});var at=a.nest().key(function(t,e){return"undefined"!=typeof t.data.groupId||"unstacked"}).entries(rt),ot=[];at.forEach(function(t,e){"unstacked"===t.key?ot=ot.concat(t.values.map(function(t,e){return[t]})):ot.push(t.values)}),ot.forEach(function(t,e){var n;n=Array.isArray(t)?t[0].geometryConfig.geometry:t.geometryConfig.geometry;var 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e,n=[o.PolyChart.defaultConfig()],r=a.dispatch("hover"),l={solid:"none",dash:[5,2],dot:[2,5]};return t.config=function(t){return arguments.length?(t.forEach(function(t,e){n[e]||(n[e]={}),i(n[e],o.PolyChart.defaultConfig()),i(n[e],t)}),this):n},t.getColorScale=function(){return e},a.rebind(t,r,"on"),t},o.PolyChart.defaultConfig=function(){var t={data:{name:"geom1",t:[[1,2,3,4]],r:[[1,2,3,4]],dotType:"circle",dotSize:64,dotVisible:!1,barWidth:20,color:"#ffa500",strokeSize:1,strokeColor:"silver",strokeDash:"solid",opacity:1,index:0,visible:!0,visibleInLegend:!0},geometryConfig:{geometry:"LinePlot",geometryType:"arc",direction:"clockwise",orientation:0,container:"body",radialScale:null,angularScale:null,colorScale:a.scale.category20()}};return t},o.BarChart=function(){return o.PolyChart()},o.BarChart.defaultConfig=function(){var t={geometryConfig:{geometryType:"bar"}};return t},o.AreaChart=function(){return o.PolyChart()},o.AreaChart.defaultConfig=function(){var 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Array(T.length);for(A=0;A<T.length;A++)e._polygons[A]=s(T[A]);if(T.length){var z=T[0][0],S=T[T.length-1],C=S[S.length-1];for(A=0;A<T.length;A++){var E=T[A];o=d(E),l=w(E),k?m?(k+="L"+o.substr(1),M=l+("L"+M.substr(1))):(k+="Z"+o,M=l+"Z"+M):(k=o,M=l),c.hasLines(e)&&E.length>1&&r.append("path").classed("js-line",!0).style("vector-effect","non-scaling-stroke").attr("d",o)}v?z&&C&&(m?("y"===m?z[1]=C[1]=p.c2p(0,!0):"x"===m&&(z[0]=C[0]=h.c2p(0,!0)),v.attr("d",k+"L"+C+"L"+z+"Z")):v.attr("d",k+"Z")):"tonext"===e.fill.substr(0,6)&&k&&b&&("tonext"===e.fill?y.attr("d",k+"Z"+b+"Z"):y.attr("d",k+"L"+b.substr(1)+"Z"),e._polygons=e._polygons.concat(_)),b=M,_=L}}}),g.selectAll("path:not([d])").remove(),g.append("g").attr("class","points").each(function(t){var e=t[0].trace,n=a.select(this),r=c.hasMarkers(e),l=c.hasText(e);!r&&!l||e.visible!==!0?n.remove():(r&&n.selectAll("path.point").data(e.marker.maxdisplayed?d:o.identity).enter().append("path").classed("point",!0).call(i.translatePoints,h,p),l&&n.selectAll("g").data(e.marker.maxdisplayed?d:o.identity).enter().append("g").append("text").call(i.translatePoints,h,p))})}},{"../../components/drawing":43,"../../components/errorbars":49,"../../lib":99,"../../lib/polygon":105,"./arrays_to_calcdata":174,"./line_points":187,"./subtypes":194,d3:8}],192:[function(t,e,n){"use strict";var r=t("./subtypes"),a=.2;e.exports=function(t,e){var n,o,i,l,s=t.cd,c=t.xaxis,u=t.yaxis,f=[],d=s[0].trace,h=d.index,p=d.marker,g=!r.hasMarkers(d)&&!r.hasText(d);if(d.visible===!0&&!g){var v=Array.isArray(p.opacity)?1:p.opacity;if(e===!1)for(n=0;n<s.length;n++)s[n].dim=0;else for(n=0;n<s.length;n++)o=s[n],i=c.c2p(o.x),l=u.c2p(o.y),e.contains([i,l])?(f.push({curveNumber:h,pointNumber:n,x:o.x,y:o.y}),o.dim=0):o.dim=1;return s[0].node3.selectAll("path.point").style("opacity",function(t){return((t.mo+1||v+1)-1)*(t.dim?a:1)}),s[0].node3.selectAll("text").style("opacity",function(t){return t.dim?a:1}),f}}},{"./subtypes":194}],193:[function(t,e,n){"use strict";var r=t("d3"),a=t("../../components/drawing"),o=t("../../components/errorbars");e.exports=function(t){var e=r.select(t).selectAll("g.trace.scatter");e.style("opacity",function(t){return t[0].trace.opacity}),e.selectAll("g.points").each(function(t){r.select(this).selectAll("path.point").call(a.pointStyle,t.trace||t[0].trace),r.select(this).selectAll("text").call(a.textPointStyle,t.trace||t[0].trace)}),e.selectAll("g.trace path.js-line").call(a.lineGroupStyle),e.selectAll("g.trace path.js-fill").call(a.fillGroupStyle),e.call(o.style)}},{"../../components/drawing":43,"../../components/errorbars":49,d3:8}],194:[function(t,e,n){"use strict";var r=t("../../lib");e.exports={hasLines:function(t){return t.visible&&t.mode&&t.mode.indexOf("lines")!==-1},hasMarkers:function(t){return t.visible&&t.mode&&t.mode.indexOf("markers")!==-1},hasText:function(t){return t.visible&&t.mode&&t.mode.indexOf("text")!==-1},isBubble:function(t){return r.isPlainObject(t.marker)&&Array.isArray(t.marker.size)}}},{"../../lib":99}],195:[function(t,e,n){"use strict";var r=t("../../lib");e.exports=function(t,e,n,a){a("textposition"),r.coerceFont(a,"textfont",n.font)}},{"../../lib":99}],196:[function(t,e,n){"use strict";e.exports=function(t,e,n){var r,a=n("x"),o=n("y");if(a)o?(r=Math.min(a.length,o.length),r<a.length&&(e.x=a.slice(0,r)),r<o.length&&(e.y=o.slice(0,r))):(r=a.length,n("y0"),n("dy"));else{if(!o)return 0;r=e.y.length,n("x0"),n("dx")}return r}},{}],197:[function(t,e,n){"use strict";var r=t("../scatter/attributes"),a=t("../../plots/attributes"),o=t("../../components/colorscale/color_attributes"),i=t("../../lib/extend").extendFlat,l=r.marker,s=r.line,c=l.line;e.exports={lon:{valType:"data_array"},lat:{valType:"data_array"},locations:{valType:"data_array"},locationmode:{valType:"enumerated",values:["ISO-3","USA-states","country names"],dflt:"ISO-3"},mode:i({},r.mode,{dflt:"markers"}),text:i({},r.text,{}),line:{color:s.color,width:s.width,dash:s.dash},marker:i({},{symbol:l.symbol,opacity:l.opacity,size:l.size,sizeref:l.sizeref,sizemin:l.sizemin,sizemode:l.sizemode,showscale:l.showscale,line:i({},{width:c.width},o("marker.line"))},o("marker")),textfont:r.textfont,textposition:r.textposition,hoverinfo:i({},a.hoverinfo,{flags:["lon","lat","location","text","name"]}),_nestedModules:{"marker.colorbar":"Colorbar"}}},{"../../components/colorscale/color_attributes":28,"../../lib/extend":96,"../../plots/attributes":119,"../scatter/attributes":175}],198:[function(t,e,n){"use strict";var r=t("../scatter/colorscale_calc");e.exports=function(t,e){var n=[{x:!1,y:!1,trace:e,t:{}}];return r(e),n}},{"../scatter/colorscale_calc":179}],199:[function(t,e,n){"use strict";function r(t,e,n){var r,a,o=0,i=n("locations");return i?(n("locationmode"),o=i.length):(r=n("lon")||[],a=n("lat")||[],o=Math.min(r.length,a.length),o<r.length&&(e.lon=r.slice(0,o)),o<a.length&&(e.lat=a.slice(0,o)),o)}var a=t("../../lib"),o=t("../scatter/subtypes"),i=t("../scatter/marker_defaults"),l=t("../scatter/line_defaults"),s=t("../scatter/text_defaults"),c=t("./attributes");e.exports=function(t,e,n,u){function f(n,r){return a.coerce(t,e,c,n,r)}var d=r(t,e,f);return d?(f("text"),f("mode"),o.hasLines(e)&&l(t,e,n,u,f),o.hasMarkers(e)&&i(t,e,n,u,f),o.hasText(e)&&s(t,e,u,f),void f("hoverinfo",1===u._dataLength?"lon+lat+location+text":void 0)):void(e.visible=!1)}},{"../../lib":99,"../scatter/line_defaults":186,"../scatter/marker_defaults":190,"../scatter/subtypes":194,"../scatter/text_defaults":195,"./attributes":197}],200:[function(t,e,n){"use strict";var r={};r.attributes=t("./attributes"),r.supplyDefaults=t("./defaults"),r.colorbar=t("../scatter/colorbar"),r.calc=t("./calc"),r.plot=t("./plot").plot,r.moduleType="trace",r.name="scattergeo",r.basePlotModule=t("../../plots/geo"),r.categories=["geo","symbols","markerColorscale","showLegend"],r.meta={},e.exports=r},{"../../plots/geo":142,"../scatter/colorbar":178,"./attributes":197,"./calc":198,"./defaults":199,"./plot":201}],201:[function(t,e,n){"use strict";function r(t,e,n){function r(t,r){d(t,e,r,n)}var a=t.marker;if(r(t.text,"tx"),r(t.textposition,"tp"),t.textfont&&(r(t.textfont.size,"ts"),r(t.textfont.color,"tc"),r(t.textfont.family,"tf")),a&&a.line){var o=a.line;r(a.opacity,"mo"),r(a.symbol,"mx"),r(a.color,"mc"),r(a.size,"ms"),r(o.color,"mlc"),r(o.width,"mlw")}}function a(t){for(var e=t.lon.length,n=new Array(e),r=0;r<e;r++)n[r]=[t.lon[r],t.lat[r]];return{type:"LineString",coordinates:n,trace:t}}function o(t,e){function n(e){var n=t.mockAxis;return c.tickText(n,n.c2l(e),"hover").text+"\xb0"}var r=e.hoverinfo;if("none"===r)return function(t){delete t.textLabel};var a="all"===r?v.hoverinfo.flags:r.split("+"),o=a.indexOf("location")!==-1&&Array.isArray(e.locations),i=a.indexOf("lon")!==-1,l=a.indexOf("lat")!==-1,s=a.indexOf("text")!==-1;return function(t){var r=[];o?r.push(t.location):i&&l?r.push("("+n(t.lon)+", "+n(t.lat)+")"):i?r.push("lon: "+n(t.lon)):l&&r.push("lat: "+n(t.lat)),s&&r.push(t.tx||e.text),t.textLabel=r.join("<br>")}}function i(t){var e=Array.isArray(t.locations);return function(n,r){return{points:[{data:t._input,fullData:t,curveNumber:t.index,pointNumber:r,lon:n.lon,lat:n.lat,location:e?n.location:null}]}}}var l=t("d3"),s=t("../../plots/cartesian/graph_interact"),c=t("../../plots/cartesian/axes"),u=t("../../lib/topojson_utils").getTopojsonFeatures,f=t("../../lib/geo_location_utils").locationToFeature,d=t("../../lib/array_to_calc_item"),h=t("../../components/color"),p=t("../../components/drawing"),g=t("../scatter/subtypes"),v=t("./attributes"),m=e.exports={};m.calcGeoJSON=function(t,e){var n,a,o,i,l=[],s=Array.isArray(t.locations);s?(i=t.locations,n=i.length,a=u(t,e),o=function(t,e){var n=f(t.locationmode,i[e],a);return void 0!==n?n.properties.ct:void 0}):(n=t.lon.length,o=function(t,e){return[t.lon[e],t.lat[e]]});for(var c=0;c<n;c++){var d=o(t,c);if(d){var h={lon:d[0],lat:d[1],location:s?t.locations[c]:null};r(t,h,c),l.push(h)}}return l.length>0&&(l[0].trace=t),l},m.plot=function(t,e){var n=t.framework.select(".scattergeolayer").selectAll("g.trace.scattergeo").data(e,function(t){return t.uid});n.enter().append("g").attr("class","trace scattergeo"),n.exit().remove(),n.selectAll("*").remove(),n.each(function(t){var e=l.select(this);g.hasLines(t)&&e.selectAll("path.js-line").data([a(t)]).enter().append("path").classed("js-line",!0)}),n.each(function(e){function n(n,r){if(t.showHover){var a=t.projection([n.lon,n.lat]);d(n),s.loneHover({x:a[0],y:a[1],name:v?e.name:void 0,text:n.textLabel,color:n.mc||(e.marker||{}).color},{container:t.hoverContainer.node()}),y=h(n,r),t.graphDiv.emit("plotly_hover",y)}}function r(e,n){t.graphDiv.emit("plotly_click",h(e,n))}var a=l.select(this),c=g.hasMarkers(e),u=g.hasText(e);if(c||u){var f=m.calcGeoJSON(e,t.topojson),d=o(t,e),h=i(e),p=e.hoverinfo,v="all"===p||p.indexOf("name")!==-1,y=null;c&&a.selectAll("path.point").data(f).enter().append("path").classed("point",!0).on("mouseover",n).on("click",r).on("mouseout",function(){s.loneUnhover(t.hoverContainer),t.graphDiv.emit("plotly_unhover",y)}).on("mousedown",function(){s.loneUnhover(t.hoverContainer)}).on("mouseup",n),u&&a.selectAll("g").data(f).enter().append("g").append("text")}}),m.style(t)},m.style=function(t){var e=t.framework.selectAll("g.trace.scattergeo");e.style("opacity",function(t){return t.opacity}),e.each(function(t){l.select(this).selectAll("path.point").call(p.pointStyle,t),l.select(this).selectAll("text").call(p.textPointStyle,t)}),e.selectAll("path.js-line").style("fill","none").each(function(t){var e=t.trace,n=e.line||{};l.select(this).call(h.stroke,n.color).call(p.dashLine,n.dash||"",n.width||0)})}},{"../../components/color":20,"../../components/drawing":43,"../../lib/array_to_calc_item":92,"../../lib/geo_location_utils":98,"../../lib/topojson_utils":111,"../../plots/cartesian/axes":121,"../../plots/cartesian/graph_interact":128,"../scatter/subtypes":194,"./attributes":197,d3:8}]},{},[5])(5)});
+\ No newline at end of file
+diff --git a/dist/plotly-gl2d.js b/dist/plotly-gl2d.js
+index f190f77..4de4838 100644
+--- a/dist/plotly-gl2d.js
++++ b/dist/plotly-gl2d.js
+@@ -254,6 +254,24 @@ module.exports = Plotly;
+ module.exports = require('../src/traces/scattergl');
+ 
+ },{"../src/traces/scattergl":367}],8:[function(require,module,exports){
++var padLeft = require('pad-left')
++
++module.exports = addLineNumbers
++function addLineNumbers (string, start, delim) {
++  start = typeof start === 'number' ? start : 1
++  delim = delim || ': '
++
++  var lines = string.split(/\r?\n/)
++  var totalDigits = String(lines.length + start - 1).length
++  return lines.map(function (line, i) {
++    var c = i + start
++    var digits = String(c).length
++    var prefix = padLeft(c, totalDigits - digits)
++    return prefix + delim + line
++  }).join('\n')
++}
++
++},{"pad-left":125}],9:[function(require,module,exports){
+ 'use strict';
+ 
+ var arraytools  = function () {
+@@ -442,7 +460,381 @@ var arraytools  = function () {
+ 
+ module.exports = arraytools();
+ 
+-},{}],9:[function(require,module,exports){
++},{}],10:[function(require,module,exports){
++module.exports = function _atob(str) {
++  return atob(str)
++}
++
++},{}],11:[function(require,module,exports){
++'use strict'
++
++var rationalize = require('./lib/rationalize')
++
++module.exports = add
++
++function add(a, b) {
++  return rationalize(
++    a[0].mul(b[1]).add(b[0].mul(a[1])),
++    a[1].mul(b[1]))
++}
++
++},{"./lib/rationalize":21}],12:[function(require,module,exports){
++'use strict'
++
++module.exports = cmp
++
++function cmp(a, b) {
++    return a[0].mul(b[1]).cmp(b[0].mul(a[1]))
++}
++
++},{}],13:[function(require,module,exports){
++'use strict'
++
++var rationalize = require('./lib/rationalize')
++
++module.exports = div
++
++function div(a, b) {
++  return rationalize(a[0].mul(b[1]), a[1].mul(b[0]))
++}
++
++},{"./lib/rationalize":21}],14:[function(require,module,exports){
++'use strict'
++
++var isRat = require('./is-rat')
++var isBN = require('./lib/is-bn')
++var num2bn = require('./lib/num-to-bn')
++var str2bn = require('./lib/str-to-bn')
++var rationalize = require('./lib/rationalize')
++var div = require('./div')
++
++module.exports = makeRational
++
++function makeRational(numer, denom) {
++  if(isRat(numer)) {
++    if(denom) {
++      return div(numer, makeRational(denom))
++    }
++    return [numer[0].clone(), numer[1].clone()]
++  }
++  var shift = 0
++  var a, b
++  if(isBN(numer)) {
++    a = numer.clone()
++  } else if(typeof numer === 'string') {
++    a = str2bn(numer)
++  } else if(numer === 0) {
++    return [num2bn(0), num2bn(1)]
++  } else if(numer === Math.floor(numer)) {
++    a = num2bn(numer)
++  } else {
++    while(numer !== Math.floor(numer)) {
++      numer = numer * Math.pow(2, 256)
++      shift -= 256
++    }
++    a = num2bn(numer)
++  }
++  if(isRat(denom)) {
++    a.mul(denom[1])
++    b = denom[0].clone()
++  } else if(isBN(denom)) {
++    b = denom.clone()
++  } else if(typeof denom === 'string') {
++    b = str2bn(denom)
++  } else if(!denom) {
++    b = num2bn(1)
++  } else if(denom === Math.floor(denom)) {
++    b = num2bn(denom)
++  } else {
++    while(denom !== Math.floor(denom)) {
++      denom = denom * Math.pow(2, 256)
++      shift += 256
++    }
++    b = num2bn(denom)
++  }
++  if(shift > 0) {
++    a = a.shln(shift)
++  } else if(shift < 0) {
++    b = b.shln(-shift)
++  }
++  return rationalize(a, b)
++}
++
++},{"./div":13,"./is-rat":15,"./lib/is-bn":19,"./lib/num-to-bn":20,"./lib/rationalize":21,"./lib/str-to-bn":22}],15:[function(require,module,exports){
++'use strict'
++
++var isBN = require('./lib/is-bn')
++
++module.exports = isRat
++
++function isRat(x) {
++  return Array.isArray(x) && x.length === 2 && isBN(x[0]) && isBN(x[1])
++}
++
++},{"./lib/is-bn":19}],16:[function(require,module,exports){
++'use strict'
++
++var bn = require('bn.js')
++
++module.exports = sign
++
++function sign(x) {
++  return x.cmp(new bn(0))
++}
++
++},{"bn.js":29}],17:[function(require,module,exports){
++'use strict'
++
++module.exports = bn2num
++
++//TODO: Make this better
++function bn2num(b) {
++  var l = b.length
++  var words = b.words
++  var out = 0
++  if (l === 1) {
++    out = words[0]
++  } else if (l === 2) {
++    out = words[0] + (words[1] * 0x4000000)
++  } else {
++    var out = 0
++    for (var i = 0; i < l; i++) {
++      var w = words[i]
++      out += w * Math.pow(0x4000000, i)
++    }
++  }
++  return b.sign ? -out : out
++}
++
++},{}],18:[function(require,module,exports){
++'use strict'
++
++var db = require('double-bits')
++var ctz = require('bit-twiddle').countTrailingZeros
++
++module.exports = ctzNumber
++
++//Counts the number of trailing zeros
++function ctzNumber(x) {
++  var l = ctz(db.lo(x))
++  if(l < 32) {
++    return l
++  }
++  var h = ctz(db.hi(x))
++  if(h > 20) {
++    return 52
++  }
++  return h + 32
++}
++
++},{"bit-twiddle":28,"double-bits":55}],19:[function(require,module,exports){
++'use strict'
++
++var BN = require('bn.js')
++
++module.exports = isBN
++
++//Test if x is a bignumber
++//FIXME: obviously this is the wrong way to do it
++function isBN(x) {
++  return x && typeof x === 'object' && Boolean(x.words)
++}
++
++},{"bn.js":29}],20:[function(require,module,exports){
++'use strict'
++
++var BN = require('bn.js')
++var db = require('double-bits')
++
++module.exports = num2bn
++
++function num2bn(x) {
++  var e = db.exponent(x)
++  if(e < 52) {
++    return new BN(x)
++  } else {
++    return (new BN(x * Math.pow(2, 52-e))).shln(e-52)
++  }
++}
++
++},{"bn.js":29,"double-bits":55}],21:[function(require,module,exports){
++'use strict'
++
++var num2bn = require('./num-to-bn')
++var sign = require('./bn-sign')
++
++module.exports = rationalize
++
++function rationalize(numer, denom) {
++  var snumer = sign(numer)
++  var sdenom = sign(denom)
++  if(snumer === 0) {
++    return [num2bn(0), num2bn(1)]
++  }
++  if(sdenom === 0) {
++    return [num2bn(0), num2bn(0)]
++  }
++  if(sdenom < 0) {
++    numer = numer.neg()
++    denom = denom.neg()
++  }
++  var d = numer.gcd(denom)
++  if(d.cmpn(1)) {
++    return [ numer.div(d), denom.div(d) ]
++  }
++  return [ numer, denom ]
++}
++
++},{"./bn-sign":16,"./num-to-bn":20}],22:[function(require,module,exports){
++'use strict'
++
++var BN = require('bn.js')
++
++module.exports = str2BN
++
++function str2BN(x) {
++  return new BN(x)
++}
++
++},{"bn.js":29}],23:[function(require,module,exports){
++'use strict'
++
++var rationalize = require('./lib/rationalize')
++
++module.exports = mul
++
++function mul(a, b) {
++  return rationalize(a[0].mul(b[0]), a[1].mul(b[1]))
++}
++
++},{"./lib/rationalize":21}],24:[function(require,module,exports){
++'use strict'
++
++var bnsign = require('./lib/bn-sign')
++
++module.exports = sign
++
++function sign(x) {
++  return bnsign(x[0]) * bnsign(x[1])
++}
++
++},{"./lib/bn-sign":16}],25:[function(require,module,exports){
++'use strict'
++
++var rationalize = require('./lib/rationalize')
++
++module.exports = sub
++
++function sub(a, b) {
++  return rationalize(a[0].mul(b[1]).sub(a[1].mul(b[0])), a[1].mul(b[1]))
++}
++
++},{"./lib/rationalize":21}],26:[function(require,module,exports){
++'use strict'
++
++var bn2num = require('./lib/bn-to-num')
++var ctz = require('./lib/ctz')
++
++module.exports = roundRat
++
++//Round a rational to the closest float
++function roundRat(f) {
++  var a = f[0]
++  var b = f[1]
++  if(a.cmpn(0) === 0) {
++    return 0
++  }
++  var h = a.divmod(b)
++  var iv = h.div
++  var x = bn2num(iv)
++  var ir = h.mod
++  if(ir.cmpn(0) === 0) {
++    return x
++  }
++  if(x) {
++    var s = ctz(x) + 4
++    var y = bn2num(ir.shln(s).divRound(b))
++
++    // flip the sign of y if x is negative
++    if (x<0) {
++      y = -y;
++    }
++
++    return x + y * Math.pow(2, -s)
++  } else {
++    var ybits = b.bitLength() - ir.bitLength() + 53
++    var y = bn2num(ir.shln(ybits).divRound(b))
++    if(ybits < 1023) {
++      return y * Math.pow(2, -ybits)
++    }
++    y *= Math.pow(2, -1023)
++    return y * Math.pow(2, 1023-ybits)
++  }
++}
++
++},{"./lib/bn-to-num":17,"./lib/ctz":18}],27:[function(require,module,exports){
++"use strict"
++
++function compileSearch(funcName, predicate, reversed, extraArgs, useNdarray, earlyOut) {
++  var code = [
++    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
++earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
++";while(l<=h){\
++var m=(l+h)>>>1,x=a", useNdarray ? ".get(m)" : "[m]"]
++  if(earlyOut) {
++    if(predicate.indexOf("c") < 0) {
++      code.push(";if(x===y){return m}else if(x<=y){")
++    } else {
++      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
++    }
++  } else {
++    code.push(";if(", predicate, "){i=m;")
++  }
++  if(reversed) {
++    code.push("l=m+1}else{h=m-1}")
++  } else {
++    code.push("h=m-1}else{l=m+1}")
++  }
++  code.push("}")
++  if(earlyOut) {
++    code.push("return -1};")
++  } else {
++    code.push("return i};")
++  }
++  return code.join("")
++}
++
++function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
++  var result = new Function([
++  compileSearch("A", "x" + predicate + "y", reversed, ["y"], false, earlyOut),
++  compileSearch("B", "x" + predicate + "y", reversed, ["y"], true, earlyOut),
++  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], false, earlyOut),
++  compileSearch("Q", "c(x,y)" + predicate + "0", reversed, ["y", "c"], true, earlyOut),
++"function dispatchBsearch", suffix, "(a,y,c,l,h){\
++if(a.shape){\
++if(typeof(c)==='function'){\
++return Q(a,(l===undefined)?0:l|0,(h===undefined)?a.shape[0]-1:h|0,y,c)\
++}else{\
++return B(a,(c===undefined)?0:c|0,(l===undefined)?a.shape[0]-1:l|0,y)\
++}}else{\
++if(typeof(c)==='function'){\
++return P(a,(l===undefined)?0:l|0,(h===undefined)?a.length-1:h|0,y,c)\
++}else{\
++return A(a,(c===undefined)?0:c|0,(l===undefined)?a.length-1:l|0,y)\
++}}}\
++return dispatchBsearch", suffix].join(""))
++  return result()
++}
++
++module.exports = {
++  ge: compileBoundsSearch(">=", false, "GE"),
++  gt: compileBoundsSearch(">", false, "GT"),
++  lt: compileBoundsSearch("<", true, "LT"),
++  le: compileBoundsSearch("<=", true, "LE"),
++  eq: compileBoundsSearch("-", true, "EQ", true)
++}
++
++},{}],28:[function(require,module,exports){
+ /**
+  * Bit twiddling hacks for JavaScript.
+  *
+@@ -648,9475 +1040,8606 @@ exports.nextCombination = function(v) {
+ }
+ 
+ 
+-},{}],10:[function(require,module,exports){
+-(function (global){
+-/*!
+- * The buffer module from node.js, for the browser.
+- *
+- * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+- * @license  MIT
+- */
+-/* eslint-disable no-proto */
+-
+-'use strict'
+-
+-var base64 = require('base64-js')
+-var ieee754 = require('ieee754')
+-var isArray = require('isarray')
+-
+-exports.Buffer = Buffer
+-exports.SlowBuffer = SlowBuffer
+-exports.INSPECT_MAX_BYTES = 50
+-Buffer.poolSize = 8192 // not used by this implementation
+-
+-var rootParent = {}
++},{}],29:[function(require,module,exports){
++(function (module, exports) {
+ 
+-/**
+- * If `Buffer.TYPED_ARRAY_SUPPORT`:
+- *   === true    Use Uint8Array implementation (fastest)
+- *   === false   Use Object implementation (most compatible, even IE6)
+- *
+- * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+- * Opera 11.6+, iOS 4.2+.
+- *
+- * Due to various browser bugs, sometimes the Object implementation will be used even
+- * when the browser supports typed arrays.
+- *
+- * Note:
+- *
+- *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
+- *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
+- *
+- *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
+- *
+- *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
+- *     incorrect length in some situations.
++'use strict';
+ 
+- * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
+- * get the Object implementation, which is slower but behaves correctly.
+- */
+-Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
+-  ? global.TYPED_ARRAY_SUPPORT
+-  : typedArraySupport()
++// Utils
+ 
+-function typedArraySupport () {
+-  try {
+-    var arr = new Uint8Array(1)
+-    arr.foo = function () { return 42 }
+-    return arr.foo() === 42 && // typed array instances can be augmented
+-        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
+-        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
+-  } catch (e) {
+-    return false
+-  }
++function assert(val, msg) {
++  if (!val)
++    throw new Error(msg || 'Assertion failed');
+ }
+ 
+-function kMaxLength () {
+-  return Buffer.TYPED_ARRAY_SUPPORT
+-    ? 0x7fffffff
+-    : 0x3fffffff
++// Could use `inherits` module, but don't want to move from single file
++// architecture yet.
++function inherits(ctor, superCtor) {
++  ctor.super_ = superCtor;
++  var TempCtor = function () {};
++  TempCtor.prototype = superCtor.prototype;
++  ctor.prototype = new TempCtor();
++  ctor.prototype.constructor = ctor;
+ }
+ 
+-/**
+- * The Buffer constructor returns instances of `Uint8Array` that have their
+- * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
+- * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
+- * and the `Uint8Array` methods. Square bracket notation works as expected -- it
+- * returns a single octet.
+- *
+- * The `Uint8Array` prototype remains unmodified.
+- */
+-function Buffer (arg) {
+-  if (!(this instanceof Buffer)) {
+-    // Avoid going through an ArgumentsAdaptorTrampoline in the common case.
+-    if (arguments.length > 1) return new Buffer(arg, arguments[1])
+-    return new Buffer(arg)
+-  }
++// BN
+ 
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+-    this.length = 0
+-    this.parent = undefined
++function BN(number, base, endian) {
++  // May be `new BN(bn)` ?
++  if (number !== null &&
++      typeof number === 'object' &&
++      Array.isArray(number.words)) {
++    return number;
+   }
+ 
+-  // Common case.
+-  if (typeof arg === 'number') {
+-    return fromNumber(this, arg)
+-  }
++  this.sign = false;
++  this.words = null;
++  this.length = 0;
++
++  // Reduction context
++  this.red = null;
+ 
+-  // Slightly less common case.
+-  if (typeof arg === 'string') {
+-    return fromString(this, arg, arguments.length > 1 ? arguments[1] : 'utf8')
++  if (base === 'le' || base === 'be') {
++    endian = base;
++    base = 10;
+   }
+ 
+-  // Unusual.
+-  return fromObject(this, arg)
++  if (number !== null)
++    this._init(number || 0, base || 10, endian || 'be');
+ }
++if (typeof module === 'object')
++  module.exports = BN;
++else
++  exports.BN = BN;
+ 
+-// TODO: Legacy, not needed anymore. Remove in next major version.
+-Buffer._augment = function (arr) {
+-  arr.__proto__ = Buffer.prototype
+-  return arr
+-}
++BN.BN = BN;
++BN.wordSize = 26;
+ 
+-function fromNumber (that, length) {
+-  that = allocate(that, length < 0 ? 0 : checked(length) | 0)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+-    for (var i = 0; i < length; i++) {
+-      that[i] = 0
+-    }
++BN.prototype._init = function init(number, base, endian) {
++  if (typeof number === 'number') {
++    return this._initNumber(number, base, endian);
++  } else if (typeof number === 'object') {
++    return this._initArray(number, base, endian);
+   }
+-  return that
+-}
+-
+-function fromString (that, string, encoding) {
+-  if (typeof encoding !== 'string' || encoding === '') encoding = 'utf8'
++  if (base === 'hex')
++    base = 16;
++  assert(base === (base | 0) && base >= 2 && base <= 36);
+ 
+-  // Assumption: byteLength() return value is always < kMaxLength.
+-  var length = byteLength(string, encoding) | 0
+-  that = allocate(that, length)
++  number = number.toString().replace(/\s+/g, '');
++  var start = 0;
++  if (number[0] === '-')
++    start++;
+ 
+-  that.write(string, encoding)
+-  return that
+-}
++  if (base === 16)
++    this._parseHex(number, start);
++  else
++    this._parseBase(number, base, start);
++
++  if (number[0] === '-')
++    this.sign = true;
++
++  this.strip();
++
++  if (endian !== 'le')
++    return;
++
++  this._initArray(this.toArray(), base, endian);
++};
++
++BN.prototype._initNumber = function _initNumber(number, base, endian) {
++  if (number < 0) {
++    this.sign = true;
++    number = -number;
++  }
++  if (number < 0x4000000) {
++    this.words = [ number & 0x3ffffff ];
++    this.length = 1;
++  } else if (number < 0x10000000000000) {
++    this.words = [
++      number & 0x3ffffff,
++      (number / 0x4000000) & 0x3ffffff
++    ];
++    this.length = 2;
++  } else {
++    assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
++    this.words = [
++      number & 0x3ffffff,
++      (number / 0x4000000) & 0x3ffffff,
++      1
++    ];
++    this.length = 3;
++  }
+ 
+-function fromObject (that, object) {
+-  if (Buffer.isBuffer(object)) return fromBuffer(that, object)
++  if (endian !== 'le')
++    return;
+ 
+-  if (isArray(object)) return fromArray(that, object)
++  // Reverse the bytes
++  this._initArray(this.toArray(), base, endian);
++};
+ 
+-  if (object == null) {
+-    throw new TypeError('must start with number, buffer, array or string')
++BN.prototype._initArray = function _initArray(number, base, endian) {
++  // Perhaps a Uint8Array
++  assert(typeof number.length === 'number');
++  if (number.length <= 0) {
++    this.words = [ 0 ];
++    this.length = 1;
++    return this;
+   }
+ 
+-  if (typeof ArrayBuffer !== 'undefined') {
+-    if (object.buffer instanceof ArrayBuffer) {
+-      return fromTypedArray(that, object)
++  this.length = Math.ceil(number.length / 3);
++  this.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    this.words[i] = 0;
++
++  var off = 0;
++  if (endian === 'be') {
++    for (var i = number.length - 1, j = 0; i >= 0; i -= 3) {
++      var w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
++      this.words[j] |= (w << off) & 0x3ffffff;
++      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
++      off += 24;
++      if (off >= 26) {
++        off -= 26;
++        j++;
++      }
+     }
+-    if (object instanceof ArrayBuffer) {
+-      return fromArrayBuffer(that, object)
++  } else if (endian === 'le') {
++    for (var i = 0, j = 0; i < number.length; i += 3) {
++      var w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
++      this.words[j] |= (w << off) & 0x3ffffff;
++      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
++      off += 24;
++      if (off >= 26) {
++        off -= 26;
++        j++;
++      }
+     }
+   }
++  return this.strip();
++};
+ 
+-  if (object.length) return fromArrayLike(that, object)
++function parseHex(str, start, end) {
++  var r = 0;
++  var len = Math.min(str.length, end);
++  for (var i = start; i < len; i++) {
++    var c = str.charCodeAt(i) - 48;
+ 
+-  return fromJsonObject(that, object)
+-}
++    r <<= 4;
+ 
+-function fromBuffer (that, buffer) {
+-  var length = checked(buffer.length) | 0
+-  that = allocate(that, length)
+-  buffer.copy(that, 0, 0, length)
+-  return that
+-}
++    // 'a' - 'f'
++    if (c >= 49 && c <= 54)
++      r |= c - 49 + 0xa;
+ 
+-function fromArray (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
+-  }
+-  return that
+-}
++    // 'A' - 'F'
++    else if (c >= 17 && c <= 22)
++      r |= c - 17 + 0xa;
+ 
+-// Duplicate of fromArray() to keep fromArray() monomorphic.
+-function fromTypedArray (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  // Truncating the elements is probably not what people expect from typed
+-  // arrays with BYTES_PER_ELEMENT > 1 but it's compatible with the behavior
+-  // of the old Buffer constructor.
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
++    // '0' - '9'
++    else
++      r |= c & 0xf;
+   }
+-  return that
++  return r;
+ }
+ 
+-function fromArrayBuffer (that, array) {
+-  array.byteLength // this throws if `array` is not a valid ArrayBuffer
++BN.prototype._parseHex = function _parseHex(number, start) {
++  // Create possibly bigger array to ensure that it fits the number
++  this.length = Math.ceil((number.length - start) / 6);
++  this.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    this.words[i] = 0;
+ 
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    // Return an augmented `Uint8Array` instance, for best performance
+-    that = new Uint8Array(array)
+-    that.__proto__ = Buffer.prototype
+-  } else {
+-    // Fallback: Return an object instance of the Buffer class
+-    that = fromTypedArray(that, new Uint8Array(array))
++  // Scan 24-bit chunks and add them to the number
++  var off = 0;
++  for (var i = number.length - 6, j = 0; i >= start; i -= 6) {
++    var w = parseHex(number, i, i + 6);
++    this.words[j] |= (w << off) & 0x3ffffff;
++    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
++    off += 24;
++    if (off >= 26) {
++      off -= 26;
++      j++;
++    }
+   }
+-  return that
+-}
+-
+-function fromArrayLike (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
++  if (i + 6 !== start) {
++    var w = parseHex(number, start, i + 6);
++    this.words[j] |= (w << off) & 0x3ffffff;
++    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
+   }
+-  return that
+-}
++  this.strip();
++};
+ 
+-// Deserialize { type: 'Buffer', data: [1,2,3,...] } into a Buffer object.
+-// Returns a zero-length buffer for inputs that don't conform to the spec.
+-function fromJsonObject (that, object) {
+-  var array
+-  var length = 0
++function parseBase(str, start, end, mul) {
++  var r = 0;
++  var len = Math.min(str.length, end);
++  for (var i = start; i < len; i++) {
++    var c = str.charCodeAt(i) - 48;
+ 
+-  if (object.type === 'Buffer' && isArray(object.data)) {
+-    array = object.data
+-    length = checked(array.length) | 0
+-  }
+-  that = allocate(that, length)
++    r *= mul;
+ 
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
+-  }
+-  return that
+-}
++    // 'a'
++    if (c >= 49)
++      r += c - 49 + 0xa;
+ 
+-if (Buffer.TYPED_ARRAY_SUPPORT) {
+-  Buffer.prototype.__proto__ = Uint8Array.prototype
+-  Buffer.__proto__ = Uint8Array
+-  if (typeof Symbol !== 'undefined' && Symbol.species &&
+-      Buffer[Symbol.species] === Buffer) {
+-    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
+-    Object.defineProperty(Buffer, Symbol.species, {
+-      value: null,
+-      configurable: true
+-    })
++    // 'A'
++    else if (c >= 17)
++      r += c - 17 + 0xa;
++
++    // '0' - '9'
++    else
++      r += c;
+   }
+-} else {
+-  // pre-set for values that may exist in the future
+-  Buffer.prototype.length = undefined
+-  Buffer.prototype.parent = undefined
++  return r;
+ }
+ 
+-function allocate (that, length) {
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    // Return an augmented `Uint8Array` instance, for best performance
+-    that = new Uint8Array(length)
+-    that.__proto__ = Buffer.prototype
+-  } else {
+-    // Fallback: Return an object instance of the Buffer class
+-    that.length = length
+-  }
++BN.prototype._parseBase = function _parseBase(number, base, start) {
++  // Initialize as zero
++  this.words = [ 0 ];
++  this.length = 1;
++
++  // Find length of limb in base
++  for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base)
++    limbLen++;
++  limbLen--;
++  limbPow = (limbPow / base) | 0;
+ 
+-  var fromPool = length !== 0 && length <= Buffer.poolSize >>> 1
+-  if (fromPool) that.parent = rootParent
++  var total = number.length - start;
++  var mod = total % limbLen;
++  var end = Math.min(total, total - mod) + start;
+ 
+-  return that
+-}
++  var word = 0;
++  for (var i = start; i < end; i += limbLen) {
++    word = parseBase(number, i, i + limbLen, base);
+ 
+-function checked (length) {
+-  // Note: cannot use `length < kMaxLength` here because that fails when
+-  // length is NaN (which is otherwise coerced to zero.)
+-  if (length >= kMaxLength()) {
+-    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+-                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
++    this.imuln(limbPow);
++    if (this.words[0] + word < 0x4000000)
++      this.words[0] += word;
++    else
++      this._iaddn(word);
+   }
+-  return length | 0
+-}
+ 
+-function SlowBuffer (subject, encoding) {
+-  if (!(this instanceof SlowBuffer)) return new SlowBuffer(subject, encoding)
++  if (mod !== 0) {
++    var pow = 1;
++    var word = parseBase(number, i, number.length, base);
+ 
+-  var buf = new Buffer(subject, encoding)
+-  delete buf.parent
+-  return buf
+-}
++    for (var i = 0; i < mod; i++)
++      pow *= base;
++    this.imuln(pow);
++    if (this.words[0] + word < 0x4000000)
++      this.words[0] += word;
++    else
++      this._iaddn(word);
++  }
++};
+ 
+-Buffer.isBuffer = function isBuffer (b) {
+-  return !!(b != null && b._isBuffer)
+-}
++BN.prototype.copy = function copy(dest) {
++  dest.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    dest.words[i] = this.words[i];
++  dest.length = this.length;
++  dest.sign = this.sign;
++  dest.red = this.red;
++};
+ 
+-Buffer.compare = function compare (a, b) {
+-  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
+-    throw new TypeError('Arguments must be Buffers')
+-  }
++BN.prototype.clone = function clone() {
++  var r = new BN(null);
++  this.copy(r);
++  return r;
++};
+ 
+-  if (a === b) return 0
++// Remove leading `0` from `this`
++BN.prototype.strip = function strip() {
++  while (this.length > 1 && this.words[this.length - 1] === 0)
++    this.length--;
++  return this._normSign();
++};
+ 
+-  var x = a.length
+-  var y = b.length
++BN.prototype._normSign = function _normSign() {
++  // -0 = 0
++  if (this.length === 1 && this.words[0] === 0)
++    this.sign = false;
++  return this;
++};
+ 
+-  var i = 0
+-  var len = Math.min(x, y)
+-  while (i < len) {
+-    if (a[i] !== b[i]) break
++BN.prototype.inspect = function inspect() {
++  return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
++};
+ 
+-    ++i
+-  }
++/*
+ 
+-  if (i !== len) {
+-    x = a[i]
+-    y = b[i]
+-  }
++var zeros = [];
++var groupSizes = [];
++var groupBases = [];
+ 
+-  if (x < y) return -1
+-  if (y < x) return 1
+-  return 0
++var s = '';
++var i = -1;
++while (++i < BN.wordSize) {
++  zeros[i] = s;
++  s += '0';
+ }
+-
+-Buffer.isEncoding = function isEncoding (encoding) {
+-  switch (String(encoding).toLowerCase()) {
+-    case 'hex':
+-    case 'utf8':
+-    case 'utf-8':
+-    case 'ascii':
+-    case 'binary':
+-    case 'base64':
+-    case 'raw':
+-    case 'ucs2':
+-    case 'ucs-2':
+-    case 'utf16le':
+-    case 'utf-16le':
+-      return true
+-    default:
+-      return false
++groupSizes[0] = 0;
++groupSizes[1] = 0;
++groupBases[0] = 0;
++groupBases[1] = 0;
++var base = 2 - 1;
++while (++base < 36 + 1) {
++  var groupSize = 0;
++  var groupBase = 1;
++  while (groupBase < (1 << BN.wordSize) / base) {
++    groupBase *= base;
++    groupSize += 1;
+   }
++  groupSizes[base] = groupSize;
++  groupBases[base] = groupBase;
+ }
+ 
+-Buffer.concat = function concat (list, length) {
+-  if (!isArray(list)) throw new TypeError('list argument must be an Array of Buffers.')
+-
+-  if (list.length === 0) {
+-    return new Buffer(0)
+-  }
++*/
+ 
+-  var i
+-  if (length === undefined) {
+-    length = 0
+-    for (i = 0; i < list.length; i++) {
+-      length += list[i].length
+-    }
+-  }
++var zeros = [
++  '',
++  '0',
++  '00',
++  '000',
++  '0000',
++  '00000',
++  '000000',
++  '0000000',
++  '00000000',
++  '000000000',
++  '0000000000',
++  '00000000000',
++  '000000000000',
++  '0000000000000',
++  '00000000000000',
++  '000000000000000',
++  '0000000000000000',
++  '00000000000000000',
++  '000000000000000000',
++  '0000000000000000000',
++  '00000000000000000000',
++  '000000000000000000000',
++  '0000000000000000000000',
++  '00000000000000000000000',
++  '000000000000000000000000',
++  '0000000000000000000000000'
++];
+ 
+-  var buf = new Buffer(length)
+-  var pos = 0
+-  for (i = 0; i < list.length; i++) {
+-    var item = list[i]
+-    item.copy(buf, pos)
+-    pos += item.length
+-  }
+-  return buf
+-}
++var groupSizes = [
++  0, 0,
++  25, 16, 12, 11, 10, 9, 8,
++  8, 7, 7, 7, 7, 6, 6,
++  6, 6, 6, 6, 6, 5, 5,
++  5, 5, 5, 5, 5, 5, 5,
++  5, 5, 5, 5, 5, 5, 5
++];
+ 
+-function byteLength (string, encoding) {
+-  if (typeof string !== 'string') string = '' + string
++var groupBases = [
++  0, 0,
++  33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
++  43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
++  16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
++  6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
++  24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
++];
+ 
+-  var len = string.length
+-  if (len === 0) return 0
++BN.prototype.toString = function toString(base, padding) {
++  base = base || 10;
++  if (base === 16 || base === 'hex') {
++    var out = '';
++    var off = 0;
++    var padding = padding | 0 || 1;
++    var carry = 0;
++    for (var i = 0; i < this.length; i++) {
++      var w = this.words[i];
++      var word = (((w << off) | carry) & 0xffffff).toString(16);
++      carry = (w >>> (24 - off)) & 0xffffff;
++      if (carry !== 0 || i !== this.length - 1)
++        out = zeros[6 - word.length] + word + out;
++      else
++        out = word + out;
++      off += 2;
++      if (off >= 26) {
++        off -= 26;
++        i--;
++      }
++    }
++    if (carry !== 0)
++      out = carry.toString(16) + out;
++    while (out.length % padding !== 0)
++      out = '0' + out;
++    if (this.sign)
++      out = '-' + out;
++    return out;
++  } else if (base === (base | 0) && base >= 2 && base <= 36) {
++    // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
++    var groupSize = groupSizes[base];
++    // var groupBase = Math.pow(base, groupSize);
++    var groupBase = groupBases[base];
++    var out = '';
++    var c = this.clone();
++    c.sign = false;
++    while (c.cmpn(0) !== 0) {
++      var r = c.modn(groupBase).toString(base);
++      c = c.idivn(groupBase);
+ 
+-  // Use a for loop to avoid recursion
+-  var loweredCase = false
+-  for (;;) {
+-    switch (encoding) {
+-      case 'ascii':
+-      case 'binary':
+-      // Deprecated
+-      case 'raw':
+-      case 'raws':
+-        return len
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8ToBytes(string).length
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return len * 2
+-      case 'hex':
+-        return len >>> 1
+-      case 'base64':
+-        return base64ToBytes(string).length
+-      default:
+-        if (loweredCase) return utf8ToBytes(string).length // assume utf8
+-        encoding = ('' + encoding).toLowerCase()
+-        loweredCase = true
++      if (c.cmpn(0) !== 0)
++        out = zeros[groupSize - r.length] + r + out;
++      else
++        out = r + out;
+     }
++    if (this.cmpn(0) === 0)
++      out = '0' + out;
++    if (this.sign)
++      out = '-' + out;
++    return out;
++  } else {
++    assert(false, 'Base should be between 2 and 36');
+   }
+-}
+-Buffer.byteLength = byteLength
+-
+-function slowToString (encoding, start, end) {
+-  var loweredCase = false
+-
+-  start = start | 0
+-  end = end === undefined || end === Infinity ? this.length : end | 0
+-
+-  if (!encoding) encoding = 'utf8'
+-  if (start < 0) start = 0
+-  if (end > this.length) end = this.length
+-  if (end <= start) return ''
+-
+-  while (true) {
+-    switch (encoding) {
+-      case 'hex':
+-        return hexSlice(this, start, end)
+-
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8Slice(this, start, end)
++};
+ 
+-      case 'ascii':
+-        return asciiSlice(this, start, end)
++BN.prototype.toJSON = function toJSON() {
++  return this.toString(16);
++};
+ 
+-      case 'binary':
+-        return binarySlice(this, start, end)
++BN.prototype.toArray = function toArray(endian) {
++  this.strip();
++  var res = new Array(this.byteLength());
++  res[0] = 0;
+ 
+-      case 'base64':
+-        return base64Slice(this, start, end)
++  var q = this.clone();
++  if (endian !== 'le') {
++    // Assume big-endian
++    for (var i = 0; q.cmpn(0) !== 0; i++) {
++      var b = q.andln(0xff);
++      q.ishrn(8);
+ 
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return utf16leSlice(this, start, end)
++      res[res.length - i - 1] = b;
++    }
++  } else {
++    // Assume little-endian
++    for (var i = 0; q.cmpn(0) !== 0; i++) {
++      var b = q.andln(0xff);
++      q.ishrn(8);
+ 
+-      default:
+-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+-        encoding = (encoding + '').toLowerCase()
+-        loweredCase = true
++      res[i] = b;
+     }
+   }
+-}
+ 
+-// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
+-// Buffer instances.
+-Buffer.prototype._isBuffer = true
++  return res;
++};
+ 
+-Buffer.prototype.toString = function toString () {
+-  var length = this.length | 0
+-  if (length === 0) return ''
+-  if (arguments.length === 0) return utf8Slice(this, 0, length)
+-  return slowToString.apply(this, arguments)
++if (Math.clz32) {
++  BN.prototype._countBits = function _countBits(w) {
++    return 32 - Math.clz32(w);
++  };
++} else {
++  BN.prototype._countBits = function _countBits(w) {
++    var t = w;
++    var r = 0;
++    if (t >= 0x1000) {
++      r += 13;
++      t >>>= 13;
++    }
++    if (t >= 0x40) {
++      r += 7;
++      t >>>= 7;
++    }
++    if (t >= 0x8) {
++      r += 4;
++      t >>>= 4;
++    }
++    if (t >= 0x02) {
++      r += 2;
++      t >>>= 2;
++    }
++    return r + t;
++  };
+ }
+ 
+-Buffer.prototype.equals = function equals (b) {
+-  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+-  if (this === b) return true
+-  return Buffer.compare(this, b) === 0
+-}
++BN.prototype._zeroBits = function _zeroBits(w) {
++  // Short-cut
++  if (w === 0)
++    return 26;
+ 
+-Buffer.prototype.inspect = function inspect () {
+-  var str = ''
+-  var max = exports.INSPECT_MAX_BYTES
+-  if (this.length > 0) {
+-    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
+-    if (this.length > max) str += ' ... '
++  var t = w;
++  var r = 0;
++  if ((t & 0x1fff) === 0) {
++    r += 13;
++    t >>>= 13;
+   }
+-  return '<Buffer ' + str + '>'
+-}
+-
+-Buffer.prototype.compare = function compare (b) {
+-  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+-  if (this === b) return 0
+-  return Buffer.compare(this, b)
+-}
+-
+-Buffer.prototype.indexOf = function indexOf (val, byteOffset) {
+-  if (byteOffset > 0x7fffffff) byteOffset = 0x7fffffff
+-  else if (byteOffset < -0x80000000) byteOffset = -0x80000000
+-  byteOffset >>= 0
+-
+-  if (this.length === 0) return -1
+-  if (byteOffset >= this.length) return -1
+-
+-  // Negative offsets start from the end of the buffer
+-  if (byteOffset < 0) byteOffset = Math.max(this.length + byteOffset, 0)
+-
+-  if (typeof val === 'string') {
+-    if (val.length === 0) return -1 // special case: looking for empty string always fails
+-    return String.prototype.indexOf.call(this, val, byteOffset)
++  if ((t & 0x7f) === 0) {
++    r += 7;
++    t >>>= 7;
+   }
+-  if (Buffer.isBuffer(val)) {
+-    return arrayIndexOf(this, val, byteOffset)
++  if ((t & 0xf) === 0) {
++    r += 4;
++    t >>>= 4;
+   }
+-  if (typeof val === 'number') {
+-    if (Buffer.TYPED_ARRAY_SUPPORT && Uint8Array.prototype.indexOf === 'function') {
+-      return Uint8Array.prototype.indexOf.call(this, val, byteOffset)
+-    }
+-    return arrayIndexOf(this, [ val ], byteOffset)
++  if ((t & 0x3) === 0) {
++    r += 2;
++    t >>>= 2;
+   }
++  if ((t & 0x1) === 0)
++    r++;
++  return r;
++};
+ 
+-  function arrayIndexOf (arr, val, byteOffset) {
+-    var foundIndex = -1
+-    for (var i = 0; byteOffset + i < arr.length; i++) {
+-      if (arr[byteOffset + i] === val[foundIndex === -1 ? 0 : i - foundIndex]) {
+-        if (foundIndex === -1) foundIndex = i
+-        if (i - foundIndex + 1 === val.length) return byteOffset + foundIndex
+-      } else {
+-        foundIndex = -1
+-      }
+-    }
+-    return -1
+-  }
++// Return number of used bits in a BN
++BN.prototype.bitLength = function bitLength() {
++  var hi = 0;
++  var w = this.words[this.length - 1];
++  var hi = this._countBits(w);
++  return (this.length - 1) * 26 + hi;
++};
+ 
+-  throw new TypeError('val must be string, number or Buffer')
+-}
++// Number of trailing zero bits
++BN.prototype.zeroBits = function zeroBits() {
++  if (this.cmpn(0) === 0)
++    return 0;
+ 
+-function hexWrite (buf, string, offset, length) {
+-  offset = Number(offset) || 0
+-  var remaining = buf.length - offset
+-  if (!length) {
+-    length = remaining
+-  } else {
+-    length = Number(length)
+-    if (length > remaining) {
+-      length = remaining
+-    }
++  var r = 0;
++  for (var i = 0; i < this.length; i++) {
++    var b = this._zeroBits(this.words[i]);
++    r += b;
++    if (b !== 26)
++      break;
+   }
++  return r;
++};
+ 
+-  // must be an even number of digits
+-  var strLen = string.length
+-  if (strLen % 2 !== 0) throw new Error('Invalid hex string')
++BN.prototype.byteLength = function byteLength() {
++  return Math.ceil(this.bitLength() / 8);
++};
+ 
+-  if (length > strLen / 2) {
+-    length = strLen / 2
+-  }
+-  for (var i = 0; i < length; i++) {
+-    var parsed = parseInt(string.substr(i * 2, 2), 16)
+-    if (isNaN(parsed)) throw new Error('Invalid hex string')
+-    buf[offset + i] = parsed
+-  }
+-  return i
+-}
++// Return negative clone of `this`
++BN.prototype.neg = function neg() {
++  if (this.cmpn(0) === 0)
++    return this.clone();
+ 
+-function utf8Write (buf, string, offset, length) {
+-  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+-}
++  var r = this.clone();
++  r.sign = !this.sign;
++  return r;
++};
+ 
+-function asciiWrite (buf, string, offset, length) {
+-  return blitBuffer(asciiToBytes(string), buf, offset, length)
+-}
+ 
+-function binaryWrite (buf, string, offset, length) {
+-  return asciiWrite(buf, string, offset, length)
+-}
++// Or `num` with `this` in-place
++BN.prototype.ior = function ior(num) {
++  this.sign = this.sign || num.sign;
+ 
+-function base64Write (buf, string, offset, length) {
+-  return blitBuffer(base64ToBytes(string), buf, offset, length)
+-}
++  while (this.length < num.length)
++    this.words[this.length++] = 0;
+ 
+-function ucs2Write (buf, string, offset, length) {
+-  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+-}
++  for (var i = 0; i < num.length; i++)
++    this.words[i] = this.words[i] | num.words[i];
+ 
+-Buffer.prototype.write = function write (string, offset, length, encoding) {
+-  // Buffer#write(string)
+-  if (offset === undefined) {
+-    encoding = 'utf8'
+-    length = this.length
+-    offset = 0
+-  // Buffer#write(string, encoding)
+-  } else if (length === undefined && typeof offset === 'string') {
+-    encoding = offset
+-    length = this.length
+-    offset = 0
+-  // Buffer#write(string, offset[, length][, encoding])
+-  } else if (isFinite(offset)) {
+-    offset = offset | 0
+-    if (isFinite(length)) {
+-      length = length | 0
+-      if (encoding === undefined) encoding = 'utf8'
+-    } else {
+-      encoding = length
+-      length = undefined
+-    }
+-  // legacy write(string, encoding, offset, length) - remove in v0.13
+-  } else {
+-    var swap = encoding
+-    encoding = offset
+-    offset = length | 0
+-    length = swap
+-  }
++  return this.strip();
++};
+ 
+-  var remaining = this.length - offset
+-  if (length === undefined || length > remaining) length = remaining
+ 
+-  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
+-    throw new RangeError('attempt to write outside buffer bounds')
+-  }
++// Or `num` with `this`
++BN.prototype.or = function or(num) {
++  if (this.length > num.length)
++    return this.clone().ior(num);
++  else
++    return num.clone().ior(this);
++};
+ 
+-  if (!encoding) encoding = 'utf8'
+ 
+-  var loweredCase = false
+-  for (;;) {
+-    switch (encoding) {
+-      case 'hex':
+-        return hexWrite(this, string, offset, length)
++// And `num` with `this` in-place
++BN.prototype.iand = function iand(num) {
++  this.sign = this.sign && num.sign;
+ 
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8Write(this, string, offset, length)
++  // b = min-length(num, this)
++  var b;
++  if (this.length > num.length)
++    b = num;
++  else
++    b = this;
+ 
+-      case 'ascii':
+-        return asciiWrite(this, string, offset, length)
++  for (var i = 0; i < b.length; i++)
++    this.words[i] = this.words[i] & num.words[i];
+ 
+-      case 'binary':
+-        return binaryWrite(this, string, offset, length)
++  this.length = b.length;
+ 
+-      case 'base64':
+-        // Warning: maxLength not taken into account in base64Write
+-        return base64Write(this, string, offset, length)
++  return this.strip();
++};
+ 
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return ucs2Write(this, string, offset, length)
+ 
+-      default:
+-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+-        encoding = ('' + encoding).toLowerCase()
+-        loweredCase = true
+-    }
+-  }
+-}
++// And `num` with `this`
++BN.prototype.and = function and(num) {
++  if (this.length > num.length)
++    return this.clone().iand(num);
++  else
++    return num.clone().iand(this);
++};
+ 
+-Buffer.prototype.toJSON = function toJSON () {
+-  return {
+-    type: 'Buffer',
+-    data: Array.prototype.slice.call(this._arr || this, 0)
+-  }
+-}
+ 
+-function base64Slice (buf, start, end) {
+-  if (start === 0 && end === buf.length) {
+-    return base64.fromByteArray(buf)
++// Xor `num` with `this` in-place
++BN.prototype.ixor = function ixor(num) {
++  this.sign = this.sign || num.sign;
++
++  // a.length > b.length
++  var a;
++  var b;
++  if (this.length > num.length) {
++    a = this;
++    b = num;
+   } else {
+-    return base64.fromByteArray(buf.slice(start, end))
++    a = num;
++    b = this;
+   }
+-}
+ 
+-function utf8Slice (buf, start, end) {
+-  end = Math.min(buf.length, end)
+-  var res = []
++  for (var i = 0; i < b.length; i++)
++    this.words[i] = a.words[i] ^ b.words[i];
+ 
+-  var i = start
+-  while (i < end) {
+-    var firstByte = buf[i]
+-    var codePoint = null
+-    var bytesPerSequence = (firstByte > 0xEF) ? 4
+-      : (firstByte > 0xDF) ? 3
+-      : (firstByte > 0xBF) ? 2
+-      : 1
++  if (this !== a)
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
+ 
+-    if (i + bytesPerSequence <= end) {
+-      var secondByte, thirdByte, fourthByte, tempCodePoint
++  this.length = a.length;
+ 
+-      switch (bytesPerSequence) {
+-        case 1:
+-          if (firstByte < 0x80) {
+-            codePoint = firstByte
+-          }
+-          break
+-        case 2:
+-          secondByte = buf[i + 1]
+-          if ((secondByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
+-            if (tempCodePoint > 0x7F) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-          break
+-        case 3:
+-          secondByte = buf[i + 1]
+-          thirdByte = buf[i + 2]
+-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
+-            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-          break
+-        case 4:
+-          secondByte = buf[i + 1]
+-          thirdByte = buf[i + 2]
+-          fourthByte = buf[i + 3]
+-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
+-            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-      }
+-    }
++  return this.strip();
++};
+ 
+-    if (codePoint === null) {
+-      // we did not generate a valid codePoint so insert a
+-      // replacement char (U+FFFD) and advance only 1 byte
+-      codePoint = 0xFFFD
+-      bytesPerSequence = 1
+-    } else if (codePoint > 0xFFFF) {
+-      // encode to utf16 (surrogate pair dance)
+-      codePoint -= 0x10000
+-      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
+-      codePoint = 0xDC00 | codePoint & 0x3FF
+-    }
+ 
+-    res.push(codePoint)
+-    i += bytesPerSequence
+-  }
++// Xor `num` with `this`
++BN.prototype.xor = function xor(num) {
++  if (this.length > num.length)
++    return this.clone().ixor(num);
++  else
++    return num.clone().ixor(this);
++};
+ 
+-  return decodeCodePointsArray(res)
+-}
+ 
+-// Based on http://stackoverflow.com/a/22747272/680742, the browser with
+-// the lowest limit is Chrome, with 0x10000 args.
+-// We go 1 magnitude less, for safety
+-var MAX_ARGUMENTS_LENGTH = 0x1000
++// Set `bit` of `this`
++BN.prototype.setn = function setn(bit, val) {
++  assert(typeof bit === 'number' && bit >= 0);
+ 
+-function decodeCodePointsArray (codePoints) {
+-  var len = codePoints.length
+-  if (len <= MAX_ARGUMENTS_LENGTH) {
+-    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+-  }
++  var off = (bit / 26) | 0;
++  var wbit = bit % 26;
+ 
+-  // Decode in chunks to avoid "call stack size exceeded".
+-  var res = ''
+-  var i = 0
+-  while (i < len) {
+-    res += String.fromCharCode.apply(
+-      String,
+-      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
+-    )
+-  }
+-  return res
+-}
++  while (this.length <= off)
++    this.words[this.length++] = 0;
+ 
+-function asciiSlice (buf, start, end) {
+-  var ret = ''
+-  end = Math.min(buf.length, end)
++  if (val)
++    this.words[off] = this.words[off] | (1 << wbit);
++  else
++    this.words[off] = this.words[off] & ~(1 << wbit);
+ 
+-  for (var i = start; i < end; i++) {
+-    ret += String.fromCharCode(buf[i] & 0x7F)
+-  }
+-  return ret
+-}
++  return this.strip();
++};
+ 
+-function binarySlice (buf, start, end) {
+-  var ret = ''
+-  end = Math.min(buf.length, end)
+ 
+-  for (var i = start; i < end; i++) {
+-    ret += String.fromCharCode(buf[i])
+-  }
+-  return ret
+-}
++// Add `num` to `this` in-place
++BN.prototype.iadd = function iadd(num) {
++  // negative + positive
++  if (this.sign && !num.sign) {
++    this.sign = false;
++    var r = this.isub(num);
++    this.sign = !this.sign;
++    return this._normSign();
+ 
+-function hexSlice (buf, start, end) {
+-  var len = buf.length
++  // positive + negative
++  } else if (!this.sign && num.sign) {
++    num.sign = false;
++    var r = this.isub(num);
++    num.sign = true;
++    return r._normSign();
++  }
+ 
+-  if (!start || start < 0) start = 0
+-  if (!end || end < 0 || end > len) end = len
++  // a.length > b.length
++  var a;
++  var b;
++  if (this.length > num.length) {
++    a = this;
++    b = num;
++  } else {
++    a = num;
++    b = this;
++  }
+ 
+-  var out = ''
+-  for (var i = start; i < end; i++) {
+-    out += toHex(buf[i])
++  var carry = 0;
++  for (var i = 0; i < b.length; i++) {
++    var r = a.words[i] + b.words[i] + carry;
++    this.words[i] = r & 0x3ffffff;
++    carry = r >>> 26;
++  }
++  for (; carry !== 0 && i < a.length; i++) {
++    var r = a.words[i] + carry;
++    this.words[i] = r & 0x3ffffff;
++    carry = r >>> 26;
+   }
+-  return out
+-}
+ 
+-function utf16leSlice (buf, start, end) {
+-  var bytes = buf.slice(start, end)
+-  var res = ''
+-  for (var i = 0; i < bytes.length; i += 2) {
+-    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
++  this.length = a.length;
++  if (carry !== 0) {
++    this.words[this.length] = carry;
++    this.length++;
++  // Copy the rest of the words
++  } else if (a !== this) {
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
+   }
+-  return res
+-}
+ 
+-Buffer.prototype.slice = function slice (start, end) {
+-  var len = this.length
+-  start = ~~start
+-  end = end === undefined ? len : ~~end
++  return this;
++};
+ 
+-  if (start < 0) {
+-    start += len
+-    if (start < 0) start = 0
+-  } else if (start > len) {
+-    start = len
++// Add `num` to `this`
++BN.prototype.add = function add(num) {
++  if (num.sign && !this.sign) {
++    num.sign = false;
++    var res = this.sub(num);
++    num.sign = true;
++    return res;
++  } else if (!num.sign && this.sign) {
++    this.sign = false;
++    var res = num.sub(this);
++    this.sign = true;
++    return res;
+   }
+ 
+-  if (end < 0) {
+-    end += len
+-    if (end < 0) end = 0
+-  } else if (end > len) {
+-    end = len
+-  }
++  if (this.length > num.length)
++    return this.clone().iadd(num);
++  else
++    return num.clone().iadd(this);
++};
+ 
+-  if (end < start) end = start
++// Subtract `num` from `this` in-place
++BN.prototype.isub = function isub(num) {
++  // this - (-num) = this + num
++  if (num.sign) {
++    num.sign = false;
++    var r = this.iadd(num);
++    num.sign = true;
++    return r._normSign();
+ 
+-  var newBuf
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    newBuf = this.subarray(start, end)
+-    newBuf.__proto__ = Buffer.prototype
+-  } else {
+-    var sliceLen = end - start
+-    newBuf = new Buffer(sliceLen, undefined)
+-    for (var i = 0; i < sliceLen; i++) {
+-      newBuf[i] = this[i + start]
+-    }
++  // -this - num = -(this + num)
++  } else if (this.sign) {
++    this.sign = false;
++    this.iadd(num);
++    this.sign = true;
++    return this._normSign();
+   }
+ 
+-  if (newBuf.length) newBuf.parent = this.parent || this
+-
+-  return newBuf
+-}
++  // At this point both numbers are positive
++  var cmp = this.cmp(num);
+ 
+-/*
+- * Need to make sure that buffer isn't trying to write out of bounds.
+- */
+-function checkOffset (offset, ext, length) {
+-  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+-  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+-}
+-
+-Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
+-
+-  var val = this[offset]
+-  var mul = 1
+-  var i = 0
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    val += this[offset + i] * mul
++  // Optimization - zeroify
++  if (cmp === 0) {
++    this.sign = false;
++    this.length = 1;
++    this.words[0] = 0;
++    return this;
+   }
+ 
+-  return val
+-}
+-
+-Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) {
+-    checkOffset(offset, byteLength, this.length)
++  // a > b
++  var a;
++  var b;
++  if (cmp > 0) {
++    a = this;
++    b = num;
++  } else {
++    a = num;
++    b = this;
+   }
+ 
+-  var val = this[offset + --byteLength]
+-  var mul = 1
+-  while (byteLength > 0 && (mul *= 0x100)) {
+-    val += this[offset + --byteLength] * mul
++  var carry = 0;
++  for (var i = 0; i < b.length; i++) {
++    var r = a.words[i] - b.words[i] + carry;
++    carry = r >> 26;
++    this.words[i] = r & 0x3ffffff;
++  }
++  for (; carry !== 0 && i < a.length; i++) {
++    var r = a.words[i] + carry;
++    carry = r >> 26;
++    this.words[i] = r & 0x3ffffff;
+   }
+ 
+-  return val
+-}
++  // Copy rest of the words
++  if (carry === 0 && i < a.length && a !== this)
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
++  this.length = Math.max(this.length, i);
+ 
+-Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 1, this.length)
+-  return this[offset]
+-}
++  if (a !== this)
++    this.sign = true;
+ 
+-Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  return this[offset] | (this[offset + 1] << 8)
+-}
++  return this.strip();
++};
+ 
+-Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  return (this[offset] << 8) | this[offset + 1]
+-}
++// Subtract `num` from `this`
++BN.prototype.sub = function sub(num) {
++  return this.clone().isub(num);
++};
+ 
+-Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
++/*
++// NOTE: This could be potentionally used to generate loop-less multiplications
++function _genCombMulTo(alen, blen) {
++  var len = alen + blen - 1;
++  var src = [
++    'var a = this.words, b = num.words, o = out.words, c = 0, w, ' +
++        'mask = 0x3ffffff, shift = 0x4000000;',
++    'out.length = ' + len + ';'
++  ];
++  for (var k = 0; k < len; k++) {
++    var minJ = Math.max(0, k - alen + 1);
++    var maxJ = Math.min(k, blen - 1);
+ 
+-  return ((this[offset]) |
+-      (this[offset + 1] << 8) |
+-      (this[offset + 2] << 16)) +
+-      (this[offset + 3] * 0x1000000)
+-}
++    for (var j = minJ; j <= maxJ; j++) {
++      var i = k - j;
++      var mul = 'a[' + i + '] * b[' + j + ']';
+ 
+-Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
++      if (j === minJ) {
++        src.push('w = ' + mul + ' + c;');
++        src.push('c = (w / shift) | 0;');
++      } else {
++        src.push('w += ' + mul + ';');
++        src.push('c += (w / shift) | 0;');
++      }
++      src.push('w &= mask;');
++    }
++    src.push('o[' + k + '] = w;');
++  }
++  src.push('if (c !== 0) {',
++           '  o[' + k + '] = c;',
++           '  out.length++;',
++           '}',
++           'return out;');
+ 
+-  return (this[offset] * 0x1000000) +
+-    ((this[offset + 1] << 16) |
+-    (this[offset + 2] << 8) |
+-    this[offset + 3])
++  return src.join('\n');
+ }
++*/
+ 
+-Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
++BN.prototype._smallMulTo = function _smallMulTo(num, out) {
++  out.sign = num.sign !== this.sign;
++  out.length = this.length + num.length;
+ 
+-  var val = this[offset]
+-  var mul = 1
+-  var i = 0
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    val += this[offset + i] * mul
++  var carry = 0;
++  for (var k = 0; k < out.length - 1; k++) {
++    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
++    // note that ncarry could be >= 0x3ffffff
++    var ncarry = carry >>> 26;
++    var rword = carry & 0x3ffffff;
++    var maxJ = Math.min(k, num.length - 1);
++    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i] | 0;
++      var b = num.words[j] | 0;
++      var r = a * b;
++
++      var lo = r & 0x3ffffff;
++      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
++      lo = (lo + rword) | 0;
++      rword = lo & 0x3ffffff;
++      ncarry = (ncarry + (lo >>> 26)) | 0;
++    }
++    out.words[k] = rword;
++    carry = ncarry;
++  }
++  if (carry !== 0) {
++    out.words[k] = carry;
++  } else {
++    out.length--;
+   }
+-  mul *= 0x80
+ 
+-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
++  return out.strip();
++};
+ 
+-  return val
+-}
++BN.prototype._bigMulTo = function _bigMulTo(num, out) {
++  out.sign = num.sign !== this.sign;
++  out.length = this.length + num.length;
+ 
+-Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
++  var carry = 0;
++  var hncarry = 0;
++  for (var k = 0; k < out.length - 1; k++) {
++    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
++    // note that ncarry could be >= 0x3ffffff
++    var ncarry = hncarry;
++    hncarry = 0;
++    var rword = carry & 0x3ffffff;
++    var maxJ = Math.min(k, num.length - 1);
++    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i] | 0;
++      var b = num.words[j] | 0;
++      var r = a * b;
+ 
+-  var i = byteLength
+-  var mul = 1
+-  var val = this[offset + --i]
+-  while (i > 0 && (mul *= 0x100)) {
+-    val += this[offset + --i] * mul
++      var lo = r & 0x3ffffff;
++      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
++      lo = (lo + rword) | 0;
++      rword = lo & 0x3ffffff;
++      ncarry = (ncarry + (lo >>> 26)) | 0;
++
++      hncarry += ncarry >>> 26;
++      ncarry &= 0x3ffffff;
++    }
++    out.words[k] = rword;
++    carry = ncarry;
++    ncarry = hncarry;
++  }
++  if (carry !== 0) {
++    out.words[k] = carry;
++  } else {
++    out.length--;
+   }
+-  mul *= 0x80
+ 
+-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
++  return out.strip();
++};
+ 
+-  return val
+-}
++BN.prototype.mulTo = function mulTo(num, out) {
++  var res;
++  if (this.length + num.length < 63)
++    res = this._smallMulTo(num, out);
++  else
++    res = this._bigMulTo(num, out);
++  return res;
++};
+ 
+-Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 1, this.length)
+-  if (!(this[offset] & 0x80)) return (this[offset])
+-  return ((0xff - this[offset] + 1) * -1)
+-}
++// Multiply `this` by `num`
++BN.prototype.mul = function mul(num) {
++  var out = new BN(null);
++  out.words = new Array(this.length + num.length);
++  return this.mulTo(num, out);
++};
+ 
+-Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  var val = this[offset] | (this[offset + 1] << 8)
+-  return (val & 0x8000) ? val | 0xFFFF0000 : val
+-}
++// In-place Multiplication
++BN.prototype.imul = function imul(num) {
++  if (this.cmpn(0) === 0 || num.cmpn(0) === 0) {
++    this.words[0] = 0;
++    this.length = 1;
++    return this;
++  }
+ 
+-Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  var val = this[offset + 1] | (this[offset] << 8)
+-  return (val & 0x8000) ? val | 0xFFFF0000 : val
+-}
++  var tlen = this.length;
++  var nlen = num.length;
+ 
+-Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
++  this.sign = num.sign !== this.sign;
++  this.length = this.length + num.length;
++  this.words[this.length - 1] = 0;
+ 
+-  return (this[offset]) |
+-    (this[offset + 1] << 8) |
+-    (this[offset + 2] << 16) |
+-    (this[offset + 3] << 24)
+-}
++  for (var k = this.length - 2; k >= 0; k--) {
++    // Sum all words with the same `i + j = k` and accumulate `carry`,
++    // note that carry could be >= 0x3ffffff
++    var carry = 0;
++    var rword = 0;
++    var maxJ = Math.min(k, nlen - 1);
++    for (var j = Math.max(0, k - tlen + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i];
++      var b = num.words[j];
++      var r = a * b;
+ 
+-Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
++      var lo = r & 0x3ffffff;
++      carry += (r / 0x4000000) | 0;
++      lo += rword;
++      rword = lo & 0x3ffffff;
++      carry += lo >>> 26;
++    }
++    this.words[k] = rword;
++    this.words[k + 1] += carry;
++    carry = 0;
++  }
+ 
+-  return (this[offset] << 24) |
+-    (this[offset + 1] << 16) |
+-    (this[offset + 2] << 8) |
+-    (this[offset + 3])
+-}
++  // Propagate overflows
++  var carry = 0;
++  for (var i = 1; i < this.length; i++) {
++    var w = this.words[i] + carry;
++    this.words[i] = w & 0x3ffffff;
++    carry = w >>> 26;
++  }
+ 
+-Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-  return ieee754.read(this, offset, true, 23, 4)
+-}
++  return this.strip();
++};
+ 
+-Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-  return ieee754.read(this, offset, false, 23, 4)
+-}
++BN.prototype.imuln = function imuln(num) {
++  assert(typeof num === 'number');
+ 
+-Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 8, this.length)
+-  return ieee754.read(this, offset, true, 52, 8)
+-}
++  // Carry
++  var carry = 0;
++  for (var i = 0; i < this.length; i++) {
++    var w = this.words[i] * num;
++    var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
++    carry >>= 26;
++    carry += (w / 0x4000000) | 0;
++    // NOTE: lo is 27bit maximum
++    carry += lo >>> 26;
++    this.words[i] = lo & 0x3ffffff;
++  }
+ 
+-Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 8, this.length)
+-  return ieee754.read(this, offset, false, 52, 8)
+-}
++  if (carry !== 0) {
++    this.words[i] = carry;
++    this.length++;
++  }
+ 
+-function checkInt (buf, value, offset, ext, max, min) {
+-  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
+-  if (value > max || value < min) throw new RangeError('value is out of bounds')
+-  if (offset + ext > buf.length) throw new RangeError('index out of range')
+-}
++  return this;
++};
+ 
+-Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
++BN.prototype.muln = function muln(num) {
++  return this.clone().imuln(num);
++};
+ 
+-  var mul = 1
+-  var i = 0
+-  this[offset] = value & 0xFF
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    this[offset + i] = (value / mul) & 0xFF
+-  }
++// `this` * `this`
++BN.prototype.sqr = function sqr() {
++  return this.mul(this);
++};
+ 
+-  return offset + byteLength
+-}
++// `this` * `this` in-place
++BN.prototype.isqr = function isqr() {
++  return this.mul(this);
++};
+ 
+-Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
++// Shift-left in-place
++BN.prototype.ishln = function ishln(bits) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var r = bits % 26;
++  var s = (bits - r) / 26;
++  var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
+ 
+-  var i = byteLength - 1
+-  var mul = 1
+-  this[offset + i] = value & 0xFF
+-  while (--i >= 0 && (mul *= 0x100)) {
+-    this[offset + i] = (value / mul) & 0xFF
++  if (r !== 0) {
++    var carry = 0;
++    for (var i = 0; i < this.length; i++) {
++      var newCarry = this.words[i] & carryMask;
++      var c = (this.words[i] - newCarry) << r;
++      this.words[i] = c | carry;
++      carry = newCarry >>> (26 - r);
++    }
++    if (carry) {
++      this.words[i] = carry;
++      this.length++;
++    }
+   }
+ 
+-  return offset + byteLength
+-}
++  if (s !== 0) {
++    for (var i = this.length - 1; i >= 0; i--)
++      this.words[i + s] = this.words[i];
++    for (var i = 0; i < s; i++)
++      this.words[i] = 0;
++    this.length += s;
++  }
+ 
+-Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+-  this[offset] = (value & 0xff)
+-  return offset + 1
+-}
++  return this.strip();
++};
+ 
+-function objectWriteUInt16 (buf, value, offset, littleEndian) {
+-  if (value < 0) value = 0xffff + value + 1
+-  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
+-    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
+-      (littleEndian ? i : 1 - i) * 8
+-  }
+-}
++// Shift-right in-place
++// NOTE: `hint` is a lowest bit before trailing zeroes
++// NOTE: if `extended` is present - it will be filled with destroyed bits
++BN.prototype.ishrn = function ishrn(bits, hint, extended) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var h;
++  if (hint)
++    h = (hint - (hint % 26)) / 26;
++  else
++    h = 0;
+ 
+-Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
+-  } else {
+-    objectWriteUInt16(this, value, offset, true)
+-  }
+-  return offset + 2
+-}
++  var r = bits % 26;
++  var s = Math.min((bits - r) / 26, this.length);
++  var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
++  var maskedWords = extended;
+ 
+-Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 8)
+-    this[offset + 1] = (value & 0xff)
+-  } else {
+-    objectWriteUInt16(this, value, offset, false)
+-  }
+-  return offset + 2
+-}
++  h -= s;
++  h = Math.max(0, h);
+ 
+-function objectWriteUInt32 (buf, value, offset, littleEndian) {
+-  if (value < 0) value = 0xffffffff + value + 1
+-  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
+-    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
++  // Extended mode, copy masked part
++  if (maskedWords) {
++    for (var i = 0; i < s; i++)
++      maskedWords.words[i] = this.words[i];
++    maskedWords.length = s;
+   }
+-}
+ 
+-Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset + 3] = (value >>> 24)
+-    this[offset + 2] = (value >>> 16)
+-    this[offset + 1] = (value >>> 8)
+-    this[offset] = (value & 0xff)
++  if (s === 0) {
++    // No-op, we should not move anything at all
++  } else if (this.length > s) {
++    this.length -= s;
++    for (var i = 0; i < this.length; i++)
++      this.words[i] = this.words[i + s];
+   } else {
+-    objectWriteUInt32(this, value, offset, true)
++    this.words[0] = 0;
++    this.length = 1;
+   }
+-  return offset + 4
+-}
+ 
+-Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 24)
+-    this[offset + 1] = (value >>> 16)
+-    this[offset + 2] = (value >>> 8)
+-    this[offset + 3] = (value & 0xff)
+-  } else {
+-    objectWriteUInt32(this, value, offset, false)
++  var carry = 0;
++  for (var i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
++    var word = this.words[i];
++    this.words[i] = (carry << (26 - r)) | (word >>> r);
++    carry = word & mask;
+   }
+-  return offset + 4
+-}
+ 
+-Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) {
+-    var limit = Math.pow(2, 8 * byteLength - 1)
++  // Push carried bits as a mask
++  if (maskedWords && carry !== 0)
++    maskedWords.words[maskedWords.length++] = carry;
+ 
+-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
++  if (this.length === 0) {
++    this.words[0] = 0;
++    this.length = 1;
+   }
+ 
+-  var i = 0
+-  var mul = 1
+-  var sub = value < 0 ? 1 : 0
+-  this[offset] = value & 0xFF
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+-  }
++  this.strip();
+ 
+-  return offset + byteLength
+-}
++  return this;
++};
+ 
+-Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) {
+-    var limit = Math.pow(2, 8 * byteLength - 1)
++// Shift-left
++BN.prototype.shln = function shln(bits) {
++  return this.clone().ishln(bits);
++};
+ 
+-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+-  }
++// Shift-right
++BN.prototype.shrn = function shrn(bits) {
++  return this.clone().ishrn(bits);
++};
+ 
+-  var i = byteLength - 1
+-  var mul = 1
+-  var sub = value < 0 ? 1 : 0
+-  this[offset + i] = value & 0xFF
+-  while (--i >= 0 && (mul *= 0x100)) {
+-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
++// Test if n bit is set
++BN.prototype.testn = function testn(bit) {
++  assert(typeof bit === 'number' && bit >= 0);
++  var r = bit % 26;
++  var s = (bit - r) / 26;
++  var q = 1 << r;
++
++  // Fast case: bit is much higher than all existing words
++  if (this.length <= s) {
++    return false;
+   }
+ 
+-  return offset + byteLength
+-}
++  // Check bit and return
++  var w = this.words[s];
+ 
+-Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+-  if (value < 0) value = 0xff + value + 1
+-  this[offset] = (value & 0xff)
+-  return offset + 1
+-}
++  return !!(w & q);
++};
+ 
+-Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
+-  } else {
+-    objectWriteUInt16(this, value, offset, true)
+-  }
+-  return offset + 2
+-}
++// Return only lowers bits of number (in-place)
++BN.prototype.imaskn = function imaskn(bits) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var r = bits % 26;
++  var s = (bits - r) / 26;
+ 
+-Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 8)
+-    this[offset + 1] = (value & 0xff)
+-  } else {
+-    objectWriteUInt16(this, value, offset, false)
+-  }
+-  return offset + 2
+-}
++  assert(!this.sign, 'imaskn works only with positive numbers');
+ 
+-Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
+-    this[offset + 2] = (value >>> 16)
+-    this[offset + 3] = (value >>> 24)
+-  } else {
+-    objectWriteUInt32(this, value, offset, true)
+-  }
+-  return offset + 4
+-}
++  if (r !== 0)
++    s++;
++  this.length = Math.min(s, this.length);
+ 
+-Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+-  if (value < 0) value = 0xffffffff + value + 1
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 24)
+-    this[offset + 1] = (value >>> 16)
+-    this[offset + 2] = (value >>> 8)
+-    this[offset + 3] = (value & 0xff)
+-  } else {
+-    objectWriteUInt32(this, value, offset, false)
++  if (r !== 0) {
++    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
++    this.words[this.length - 1] &= mask;
+   }
+-  return offset + 4
+-}
+ 
+-function checkIEEE754 (buf, value, offset, ext, max, min) {
+-  if (offset + ext > buf.length) throw new RangeError('index out of range')
+-  if (offset < 0) throw new RangeError('index out of range')
+-}
++  return this.strip();
++};
+ 
+-function writeFloat (buf, value, offset, littleEndian, noAssert) {
+-  if (!noAssert) {
+-    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
+-  }
+-  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+-  return offset + 4
+-}
++// Return only lowers bits of number
++BN.prototype.maskn = function maskn(bits) {
++  return this.clone().imaskn(bits);
++};
+ 
+-Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+-  return writeFloat(this, value, offset, true, noAssert)
+-}
++// Add plain number `num` to `this`
++BN.prototype.iaddn = function iaddn(num) {
++  assert(typeof num === 'number');
++  if (num < 0)
++    return this.isubn(-num);
+ 
+-Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+-  return writeFloat(this, value, offset, false, noAssert)
+-}
++  // Possible sign change
++  if (this.sign) {
++    if (this.length === 1 && this.words[0] < num) {
++      this.words[0] = num - this.words[0];
++      this.sign = false;
++      return this;
++    }
+ 
+-function writeDouble (buf, value, offset, littleEndian, noAssert) {
+-  if (!noAssert) {
+-    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
++    this.sign = false;
++    this.isubn(num);
++    this.sign = true;
++    return this;
+   }
+-  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+-  return offset + 8
+-}
+ 
+-Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+-  return writeDouble(this, value, offset, true, noAssert)
+-}
++  // Add without checks
++  return this._iaddn(num);
++};
+ 
+-Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+-  return writeDouble(this, value, offset, false, noAssert)
+-}
++BN.prototype._iaddn = function _iaddn(num) {
++  this.words[0] += num;
+ 
+-// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+-Buffer.prototype.copy = function copy (target, targetStart, start, end) {
+-  if (!start) start = 0
+-  if (!end && end !== 0) end = this.length
+-  if (targetStart >= target.length) targetStart = target.length
+-  if (!targetStart) targetStart = 0
+-  if (end > 0 && end < start) end = start
++  // Carry
++  for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
++    this.words[i] -= 0x4000000;
++    if (i === this.length - 1)
++      this.words[i + 1] = 1;
++    else
++      this.words[i + 1]++;
++  }
++  this.length = Math.max(this.length, i + 1);
+ 
+-  // Copy 0 bytes; we're done
+-  if (end === start) return 0
+-  if (target.length === 0 || this.length === 0) return 0
++  return this;
++};
+ 
+-  // Fatal error conditions
+-  if (targetStart < 0) {
+-    throw new RangeError('targetStart out of bounds')
+-  }
+-  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
+-  if (end < 0) throw new RangeError('sourceEnd out of bounds')
++// Subtract plain number `num` from `this`
++BN.prototype.isubn = function isubn(num) {
++  assert(typeof num === 'number');
++  if (num < 0)
++    return this.iaddn(-num);
+ 
+-  // Are we oob?
+-  if (end > this.length) end = this.length
+-  if (target.length - targetStart < end - start) {
+-    end = target.length - targetStart + start
++  if (this.sign) {
++    this.sign = false;
++    this.iaddn(num);
++    this.sign = true;
++    return this;
+   }
+ 
+-  var len = end - start
+-  var i
++  this.words[0] -= num;
+ 
+-  if (this === target && start < targetStart && targetStart < end) {
+-    // descending copy from end
+-    for (i = len - 1; i >= 0; i--) {
+-      target[i + targetStart] = this[i + start]
+-    }
+-  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
+-    // ascending copy from start
+-    for (i = 0; i < len; i++) {
+-      target[i + targetStart] = this[i + start]
+-    }
+-  } else {
+-    Uint8Array.prototype.set.call(
+-      target,
+-      this.subarray(start, start + len),
+-      targetStart
+-    )
++  // Carry
++  for (var i = 0; i < this.length && this.words[i] < 0; i++) {
++    this.words[i] += 0x4000000;
++    this.words[i + 1] -= 1;
+   }
+ 
+-  return len
+-}
++  return this.strip();
++};
+ 
+-// fill(value, start=0, end=buffer.length)
+-Buffer.prototype.fill = function fill (value, start, end) {
+-  if (!value) value = 0
+-  if (!start) start = 0
+-  if (!end) end = this.length
++BN.prototype.addn = function addn(num) {
++  return this.clone().iaddn(num);
++};
+ 
+-  if (end < start) throw new RangeError('end < start')
++BN.prototype.subn = function subn(num) {
++  return this.clone().isubn(num);
++};
+ 
+-  // Fill 0 bytes; we're done
+-  if (end === start) return
+-  if (this.length === 0) return
++BN.prototype.iabs = function iabs() {
++  this.sign = false;
+ 
+-  if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
+-  if (end < 0 || end > this.length) throw new RangeError('end out of bounds')
++  return this;
++};
+ 
+-  var i
+-  if (typeof value === 'number') {
+-    for (i = start; i < end; i++) {
+-      this[i] = value
+-    }
++BN.prototype.abs = function abs() {
++  return this.clone().iabs();
++};
++
++BN.prototype._ishlnsubmul = function _ishlnsubmul(num, mul, shift) {
++  // Bigger storage is needed
++  var len = num.length + shift;
++  var i;
++  if (this.words.length < len) {
++    var t = new Array(len);
++    for (var i = 0; i < this.length; i++)
++      t[i] = this.words[i];
++    this.words = t;
+   } else {
+-    var bytes = utf8ToBytes(value.toString())
+-    var len = bytes.length
+-    for (i = start; i < end; i++) {
+-      this[i] = bytes[i % len]
+-    }
++    i = this.length;
+   }
+ 
+-  return this
+-}
++  // Zeroify rest
++  this.length = Math.max(this.length, len);
++  for (; i < this.length; i++)
++    this.words[i] = 0;
+ 
+-// HELPER FUNCTIONS
+-// ================
++  var carry = 0;
++  for (var i = 0; i < num.length; i++) {
++    var w = this.words[i + shift] + carry;
++    var right = num.words[i] * mul;
++    w -= right & 0x3ffffff;
++    carry = (w >> 26) - ((right / 0x4000000) | 0);
++    this.words[i + shift] = w & 0x3ffffff;
++  }
++  for (; i < this.length - shift; i++) {
++    var w = this.words[i + shift] + carry;
++    carry = w >> 26;
++    this.words[i + shift] = w & 0x3ffffff;
++  }
+ 
+-var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
++  if (carry === 0)
++    return this.strip();
+ 
+-function base64clean (str) {
+-  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+-  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
+-  // Node converts strings with length < 2 to ''
+-  if (str.length < 2) return ''
+-  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+-  while (str.length % 4 !== 0) {
+-    str = str + '='
++  // Subtraction overflow
++  assert(carry === -1);
++  carry = 0;
++  for (var i = 0; i < this.length; i++) {
++    var w = -this.words[i] + carry;
++    carry = w >> 26;
++    this.words[i] = w & 0x3ffffff;
+   }
+-  return str
+-}
+-
+-function stringtrim (str) {
+-  if (str.trim) return str.trim()
+-  return str.replace(/^\s+|\s+$/g, '')
+-}
++  this.sign = true;
+ 
+-function toHex (n) {
+-  if (n < 16) return '0' + n.toString(16)
+-  return n.toString(16)
+-}
++  return this.strip();
++};
+ 
+-function utf8ToBytes (string, units) {
+-  units = units || Infinity
+-  var codePoint
+-  var length = string.length
+-  var leadSurrogate = null
+-  var bytes = []
++BN.prototype._wordDiv = function _wordDiv(num, mode) {
++  var shift = this.length - num.length;
+ 
+-  for (var i = 0; i < length; i++) {
+-    codePoint = string.charCodeAt(i)
++  var a = this.clone();
++  var b = num;
+ 
+-    // is surrogate component
+-    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+-      // last char was a lead
+-      if (!leadSurrogate) {
+-        // no lead yet
+-        if (codePoint > 0xDBFF) {
+-          // unexpected trail
+-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-          continue
+-        } else if (i + 1 === length) {
+-          // unpaired lead
+-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-          continue
+-        }
++  // Normalize
++  var bhi = b.words[b.length - 1];
++  var bhiBits = this._countBits(bhi);
++  shift = 26 - bhiBits;
++  if (shift !== 0) {
++    b = b.shln(shift);
++    a.ishln(shift);
++    bhi = b.words[b.length - 1];
++  }
+ 
+-        // valid lead
+-        leadSurrogate = codePoint
++  // Initialize quotient
++  var m = a.length - b.length;
++  var q;
+ 
+-        continue
+-      }
++  if (mode !== 'mod') {
++    q = new BN(null);
++    q.length = m + 1;
++    q.words = new Array(q.length);
++    for (var i = 0; i < q.length; i++)
++      q.words[i] = 0;
++  }
+ 
+-      // 2 leads in a row
+-      if (codePoint < 0xDC00) {
+-        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-        leadSurrogate = codePoint
+-        continue
+-      }
++  var diff = a.clone()._ishlnsubmul(b, 1, m);
++  if (!diff.sign) {
++    a = diff;
++    if (q)
++      q.words[m] = 1;
++  }
+ 
+-      // valid surrogate pair
+-      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
+-    } else if (leadSurrogate) {
+-      // valid bmp char, but last char was a lead
+-      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-    }
++  for (var j = m - 1; j >= 0; j--) {
++    var qj = a.words[b.length + j] * 0x4000000 + a.words[b.length + j - 1];
+ 
+-    leadSurrogate = null
++    // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
++    // (0x7ffffff)
++    qj = Math.min((qj / bhi) | 0, 0x3ffffff);
+ 
+-    // encode utf8
+-    if (codePoint < 0x80) {
+-      if ((units -= 1) < 0) break
+-      bytes.push(codePoint)
+-    } else if (codePoint < 0x800) {
+-      if ((units -= 2) < 0) break
+-      bytes.push(
+-        codePoint >> 0x6 | 0xC0,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else if (codePoint < 0x10000) {
+-      if ((units -= 3) < 0) break
+-      bytes.push(
+-        codePoint >> 0xC | 0xE0,
+-        codePoint >> 0x6 & 0x3F | 0x80,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else if (codePoint < 0x110000) {
+-      if ((units -= 4) < 0) break
+-      bytes.push(
+-        codePoint >> 0x12 | 0xF0,
+-        codePoint >> 0xC & 0x3F | 0x80,
+-        codePoint >> 0x6 & 0x3F | 0x80,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else {
+-      throw new Error('Invalid code point')
++    a._ishlnsubmul(b, qj, j);
++    while (a.sign) {
++      qj--;
++      a.sign = false;
++      a._ishlnsubmul(b, 1, j);
++      if (a.cmpn(0) !== 0)
++        a.sign = !a.sign;
+     }
++    if (q)
++      q.words[j] = qj;
+   }
++  if (q)
++    q.strip();
++  a.strip();
+ 
+-  return bytes
+-}
+-
+-function asciiToBytes (str) {
+-  var byteArray = []
+-  for (var i = 0; i < str.length; i++) {
+-    // Node's code seems to be doing this and not & 0x7F..
+-    byteArray.push(str.charCodeAt(i) & 0xFF)
+-  }
+-  return byteArray
+-}
++  // Denormalize
++  if (mode !== 'div' && shift !== 0)
++    a.ishrn(shift);
++  return { div: q ? q : null, mod: a };
++};
+ 
+-function utf16leToBytes (str, units) {
+-  var c, hi, lo
+-  var byteArray = []
+-  for (var i = 0; i < str.length; i++) {
+-    if ((units -= 2) < 0) break
++BN.prototype.divmod = function divmod(num, mode) {
++  assert(num.cmpn(0) !== 0);
+ 
+-    c = str.charCodeAt(i)
+-    hi = c >> 8
+-    lo = c % 256
+-    byteArray.push(lo)
+-    byteArray.push(hi)
++  if (this.sign && !num.sign) {
++    var res = this.neg().divmod(num, mode);
++    var div;
++    var mod;
++    if (mode !== 'mod')
++      div = res.div.neg();
++    if (mode !== 'div')
++      mod = res.mod.cmpn(0) === 0 ? res.mod : num.sub(res.mod);
++    return {
++      div: div,
++      mod: mod
++    };
++  } else if (!this.sign && num.sign) {
++    var res = this.divmod(num.neg(), mode);
++    var div;
++    if (mode !== 'mod')
++      div = res.div.neg();
++    return { div: div, mod: res.mod };
++  } else if (this.sign && num.sign) {
++    return this.neg().divmod(num.neg(), mode);
+   }
+ 
+-  return byteArray
+-}
++  // Both numbers are positive at this point
+ 
+-function base64ToBytes (str) {
+-  return base64.toByteArray(base64clean(str))
+-}
++  // Strip both numbers to approximate shift value
++  if (num.length > this.length || this.cmp(num) < 0)
++    return { div: new BN(0), mod: this };
+ 
+-function blitBuffer (src, dst, offset, length) {
+-  for (var i = 0; i < length; i++) {
+-    if ((i + offset >= dst.length) || (i >= src.length)) break
+-    dst[i + offset] = src[i]
++  // Very short reduction
++  if (num.length === 1) {
++    if (mode === 'div')
++      return { div: this.divn(num.words[0]), mod: null };
++    else if (mode === 'mod')
++      return { div: null, mod: new BN(this.modn(num.words[0])) };
++    return {
++      div: this.divn(num.words[0]),
++      mod: new BN(this.modn(num.words[0]))
++    };
+   }
+-  return i
+-}
+ 
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"base64-js":11,"ieee754":12,"isarray":13}],11:[function(require,module,exports){
+-'use strict'
++  return this._wordDiv(num, mode);
++};
+ 
+-exports.toByteArray = toByteArray
+-exports.fromByteArray = fromByteArray
+-
+-var lookup = []
+-var revLookup = []
+-var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+-
+-function init () {
+-  var i
+-  var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+-  var len = code.length
+-
+-  for (i = 0; i < len; i++) {
+-    lookup[i] = code[i]
+-  }
+-
+-  for (i = 0; i < len; ++i) {
+-    revLookup[code.charCodeAt(i)] = i
+-  }
+-  revLookup['-'.charCodeAt(0)] = 62
+-  revLookup['_'.charCodeAt(0)] = 63
+-}
++// Find `this` / `num`
++BN.prototype.div = function div(num) {
++  return this.divmod(num, 'div').div;
++};
+ 
+-init()
++// Find `this` % `num`
++BN.prototype.mod = function mod(num) {
++  return this.divmod(num, 'mod').mod;
++};
+ 
+-function toByteArray (b64) {
+-  var i, j, l, tmp, placeHolders, arr
+-  var len = b64.length
++// Find Round(`this` / `num`)
++BN.prototype.divRound = function divRound(num) {
++  var dm = this.divmod(num);
+ 
+-  if (len % 4 > 0) {
+-    throw new Error('Invalid string. Length must be a multiple of 4')
+-  }
++  // Fast case - exact division
++  if (dm.mod.cmpn(0) === 0)
++    return dm.div;
+ 
+-  // the number of equal signs (place holders)
+-  // if there are two placeholders, than the two characters before it
+-  // represent one byte
+-  // if there is only one, then the three characters before it represent 2 bytes
+-  // this is just a cheap hack to not do indexOf twice
+-  placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
++  var mod = dm.div.sign ? dm.mod.isub(num) : dm.mod;
+ 
+-  // base64 is 4/3 + up to two characters of the original data
+-  arr = new Arr(len * 3 / 4 - placeHolders)
++  var half = num.shrn(1);
++  var r2 = num.andln(1);
++  var cmp = mod.cmp(half);
+ 
+-  // if there are placeholders, only get up to the last complete 4 chars
+-  l = placeHolders > 0 ? len - 4 : len
++  // Round down
++  if (cmp < 0 || r2 === 1 && cmp === 0)
++    return dm.div;
+ 
+-  var L = 0
++  // Round up
++  return dm.div.sign ? dm.div.isubn(1) : dm.div.iaddn(1);
++};
+ 
+-  for (i = 0, j = 0; i < l; i += 4, j += 3) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
+-    arr[L++] = (tmp & 0xFF0000) >> 16
+-    arr[L++] = (tmp & 0xFF00) >> 8
+-    arr[L++] = tmp & 0xFF
+-  }
++BN.prototype.modn = function modn(num) {
++  assert(num <= 0x3ffffff);
++  var p = (1 << 26) % num;
+ 
+-  if (placeHolders === 2) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
+-    arr[L++] = tmp & 0xFF
+-  } else if (placeHolders === 1) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
+-    arr[L++] = (tmp >> 8) & 0xFF
+-    arr[L++] = tmp & 0xFF
+-  }
++  var acc = 0;
++  for (var i = this.length - 1; i >= 0; i--)
++    acc = (p * acc + this.words[i]) % num;
+ 
+-  return arr
+-}
++  return acc;
++};
+ 
+-function tripletToBase64 (num) {
+-  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
+-}
++// In-place division by number
++BN.prototype.idivn = function idivn(num) {
++  assert(num <= 0x3ffffff);
+ 
+-function encodeChunk (uint8, start, end) {
+-  var tmp
+-  var output = []
+-  for (var i = start; i < end; i += 3) {
+-    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+-    output.push(tripletToBase64(tmp))
++  var carry = 0;
++  for (var i = this.length - 1; i >= 0; i--) {
++    var w = this.words[i] + carry * 0x4000000;
++    this.words[i] = (w / num) | 0;
++    carry = w % num;
+   }
+-  return output.join('')
+-}
+-
+-function fromByteArray (uint8) {
+-  var tmp
+-  var len = uint8.length
+-  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
+-  var output = ''
+-  var parts = []
+-  var maxChunkLength = 16383 // must be multiple of 3
+ 
+-  // go through the array every three bytes, we'll deal with trailing stuff later
+-  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+-    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+-  }
++  return this.strip();
++};
+ 
+-  // pad the end with zeros, but make sure to not forget the extra bytes
+-  if (extraBytes === 1) {
+-    tmp = uint8[len - 1]
+-    output += lookup[tmp >> 2]
+-    output += lookup[(tmp << 4) & 0x3F]
+-    output += '=='
+-  } else if (extraBytes === 2) {
+-    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
+-    output += lookup[tmp >> 10]
+-    output += lookup[(tmp >> 4) & 0x3F]
+-    output += lookup[(tmp << 2) & 0x3F]
+-    output += '='
+-  }
++BN.prototype.divn = function divn(num) {
++  return this.clone().idivn(num);
++};
+ 
+-  parts.push(output)
++BN.prototype.egcd = function egcd(p) {
++  assert(!p.sign);
++  assert(p.cmpn(0) !== 0);
+ 
+-  return parts.join('')
+-}
++  var x = this;
++  var y = p.clone();
+ 
+-},{}],12:[function(require,module,exports){
+-exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+-  var e, m
+-  var eLen = nBytes * 8 - mLen - 1
+-  var eMax = (1 << eLen) - 1
+-  var eBias = eMax >> 1
+-  var nBits = -7
+-  var i = isLE ? (nBytes - 1) : 0
+-  var d = isLE ? -1 : 1
+-  var s = buffer[offset + i]
++  if (x.sign)
++    x = x.mod(p);
++  else
++    x = x.clone();
+ 
+-  i += d
++  // A * x + B * y = x
++  var A = new BN(1);
++  var B = new BN(0);
+ 
+-  e = s & ((1 << (-nBits)) - 1)
+-  s >>= (-nBits)
+-  nBits += eLen
+-  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
++  // C * x + D * y = y
++  var C = new BN(0);
++  var D = new BN(1);
+ 
+-  m = e & ((1 << (-nBits)) - 1)
+-  e >>= (-nBits)
+-  nBits += mLen
+-  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
++  var g = 0;
+ 
+-  if (e === 0) {
+-    e = 1 - eBias
+-  } else if (e === eMax) {
+-    return m ? NaN : ((s ? -1 : 1) * Infinity)
+-  } else {
+-    m = m + Math.pow(2, mLen)
+-    e = e - eBias
++  while (x.isEven() && y.isEven()) {
++    x.ishrn(1);
++    y.ishrn(1);
++    ++g;
+   }
+-  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+-}
+-
+-exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+-  var e, m, c
+-  var eLen = nBytes * 8 - mLen - 1
+-  var eMax = (1 << eLen) - 1
+-  var eBias = eMax >> 1
+-  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+-  var i = isLE ? 0 : (nBytes - 1)
+-  var d = isLE ? 1 : -1
+-  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+ 
+-  value = Math.abs(value)
++  var yp = y.clone();
++  var xp = x.clone();
+ 
+-  if (isNaN(value) || value === Infinity) {
+-    m = isNaN(value) ? 1 : 0
+-    e = eMax
+-  } else {
+-    e = Math.floor(Math.log(value) / Math.LN2)
+-    if (value * (c = Math.pow(2, -e)) < 1) {
+-      e--
+-      c *= 2
+-    }
+-    if (e + eBias >= 1) {
+-      value += rt / c
+-    } else {
+-      value += rt * Math.pow(2, 1 - eBias)
++  while (x.cmpn(0) !== 0) {
++    while (x.isEven()) {
++      x.ishrn(1);
++      if (A.isEven() && B.isEven()) {
++        A.ishrn(1);
++        B.ishrn(1);
++      } else {
++        A.iadd(yp).ishrn(1);
++        B.isub(xp).ishrn(1);
++      }
+     }
+-    if (value * c >= 2) {
+-      e++
+-      c /= 2
++
++    while (y.isEven()) {
++      y.ishrn(1);
++      if (C.isEven() && D.isEven()) {
++        C.ishrn(1);
++        D.ishrn(1);
++      } else {
++        C.iadd(yp).ishrn(1);
++        D.isub(xp).ishrn(1);
++      }
+     }
+ 
+-    if (e + eBias >= eMax) {
+-      m = 0
+-      e = eMax
+-    } else if (e + eBias >= 1) {
+-      m = (value * c - 1) * Math.pow(2, mLen)
+-      e = e + eBias
++    if (x.cmp(y) >= 0) {
++      x.isub(y);
++      A.isub(C);
++      B.isub(D);
+     } else {
+-      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+-      e = 0
++      y.isub(x);
++      C.isub(A);
++      D.isub(B);
+     }
+   }
+ 
+-  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+-
+-  e = (e << mLen) | m
+-  eLen += mLen
+-  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+-
+-  buffer[offset + i - d] |= s * 128
+-}
+-
+-},{}],13:[function(require,module,exports){
+-var toString = {}.toString;
+-
+-module.exports = Array.isArray || function (arr) {
+-  return toString.call(arr) == '[object Array]';
++  return {
++    a: C,
++    b: D,
++    gcd: y.ishln(g)
++  };
+ };
+ 
+-},{}],14:[function(require,module,exports){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
++// This is reduced incarnation of the binary EEA
++// above, designated to invert members of the
++// _prime_ fields F(p) at a maximal speed
++BN.prototype._invmp = function _invmp(p) {
++  assert(!p.sign);
++  assert(p.cmpn(0) !== 0);
+ 
+-function EventEmitter() {
+-  this._events = this._events || {};
+-  this._maxListeners = this._maxListeners || undefined;
+-}
+-module.exports = EventEmitter;
++  var a = this;
++  var b = p.clone();
+ 
+-// Backwards-compat with node 0.10.x
+-EventEmitter.EventEmitter = EventEmitter;
++  if (a.sign)
++    a = a.mod(p);
++  else
++    a = a.clone();
+ 
+-EventEmitter.prototype._events = undefined;
+-EventEmitter.prototype._maxListeners = undefined;
++  var x1 = new BN(1);
++  var x2 = new BN(0);
+ 
+-// By default EventEmitters will print a warning if more than 10 listeners are
+-// added to it. This is a useful default which helps finding memory leaks.
+-EventEmitter.defaultMaxListeners = 10;
++  var delta = b.clone();
+ 
+-// Obviously not all Emitters should be limited to 10. This function allows
+-// that to be increased. Set to zero for unlimited.
+-EventEmitter.prototype.setMaxListeners = function(n) {
+-  if (!isNumber(n) || n < 0 || isNaN(n))
+-    throw TypeError('n must be a positive number');
+-  this._maxListeners = n;
+-  return this;
++  while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
++    while (a.isEven()) {
++      a.ishrn(1);
++      if (x1.isEven())
++        x1.ishrn(1);
++      else
++        x1.iadd(delta).ishrn(1);
++    }
++    while (b.isEven()) {
++      b.ishrn(1);
++      if (x2.isEven())
++        x2.ishrn(1);
++      else
++        x2.iadd(delta).ishrn(1);
++    }
++    if (a.cmp(b) >= 0) {
++      a.isub(b);
++      x1.isub(x2);
++    } else {
++      b.isub(a);
++      x2.isub(x1);
++    }
++  }
++  if (a.cmpn(1) === 0)
++    return x1;
++  else
++    return x2;
+ };
+ 
+-EventEmitter.prototype.emit = function(type) {
+-  var er, handler, len, args, i, listeners;
++BN.prototype.gcd = function gcd(num) {
++  if (this.cmpn(0) === 0)
++    return num.clone();
++  if (num.cmpn(0) === 0)
++    return this.clone();
+ 
+-  if (!this._events)
+-    this._events = {};
++  var a = this.clone();
++  var b = num.clone();
++  a.sign = false;
++  b.sign = false;
+ 
+-  // If there is no 'error' event listener then throw.
+-  if (type === 'error') {
+-    if (!this._events.error ||
+-        (isObject(this._events.error) && !this._events.error.length)) {
+-      er = arguments[1];
+-      if (er instanceof Error) {
+-        throw er; // Unhandled 'error' event
+-      }
+-      throw TypeError('Uncaught, unspecified "error" event.');
+-    }
++  // Remove common factor of two
++  for (var shift = 0; a.isEven() && b.isEven(); shift++) {
++    a.ishrn(1);
++    b.ishrn(1);
+   }
+ 
+-  handler = this._events[type];
+-
+-  if (isUndefined(handler))
+-    return false;
++  do {
++    while (a.isEven())
++      a.ishrn(1);
++    while (b.isEven())
++      b.ishrn(1);
+ 
+-  if (isFunction(handler)) {
+-    switch (arguments.length) {
+-      // fast cases
+-      case 1:
+-        handler.call(this);
+-        break;
+-      case 2:
+-        handler.call(this, arguments[1]);
+-        break;
+-      case 3:
+-        handler.call(this, arguments[1], arguments[2]);
+-        break;
+-      // slower
+-      default:
+-        args = Array.prototype.slice.call(arguments, 1);
+-        handler.apply(this, args);
++    var r = a.cmp(b);
++    if (r < 0) {
++      // Swap `a` and `b` to make `a` always bigger than `b`
++      var t = a;
++      a = b;
++      b = t;
++    } else if (r === 0 || b.cmpn(1) === 0) {
++      break;
+     }
+-  } else if (isObject(handler)) {
+-    args = Array.prototype.slice.call(arguments, 1);
+-    listeners = handler.slice();
+-    len = listeners.length;
+-    for (i = 0; i < len; i++)
+-      listeners[i].apply(this, args);
+-  }
+ 
+-  return true;
+-};
++    a.isub(b);
++  } while (true);
+ 
+-EventEmitter.prototype.addListener = function(type, listener) {
+-  var m;
++  return b.ishln(shift);
++};
+ 
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
++// Invert number in the field F(num)
++BN.prototype.invm = function invm(num) {
++  return this.egcd(num).a.mod(num);
++};
+ 
+-  if (!this._events)
+-    this._events = {};
++BN.prototype.isEven = function isEven() {
++  return (this.words[0] & 1) === 0;
++};
+ 
+-  // To avoid recursion in the case that type === "newListener"! Before
+-  // adding it to the listeners, first emit "newListener".
+-  if (this._events.newListener)
+-    this.emit('newListener', type,
+-              isFunction(listener.listener) ?
+-              listener.listener : listener);
++BN.prototype.isOdd = function isOdd() {
++  return (this.words[0] & 1) === 1;
++};
+ 
+-  if (!this._events[type])
+-    // Optimize the case of one listener. Don't need the extra array object.
+-    this._events[type] = listener;
+-  else if (isObject(this._events[type]))
+-    // If we've already got an array, just append.
+-    this._events[type].push(listener);
+-  else
+-    // Adding the second element, need to change to array.
+-    this._events[type] = [this._events[type], listener];
++// And first word and num
++BN.prototype.andln = function andln(num) {
++  return this.words[0] & num;
++};
+ 
+-  // Check for listener leak
+-  if (isObject(this._events[type]) && !this._events[type].warned) {
+-    if (!isUndefined(this._maxListeners)) {
+-      m = this._maxListeners;
+-    } else {
+-      m = EventEmitter.defaultMaxListeners;
+-    }
++// Increment at the bit position in-line
++BN.prototype.bincn = function bincn(bit) {
++  assert(typeof bit === 'number');
++  var r = bit % 26;
++  var s = (bit - r) / 26;
++  var q = 1 << r;
+ 
+-    if (m && m > 0 && this._events[type].length > m) {
+-      this._events[type].warned = true;
+-      console.error('(node) warning: possible EventEmitter memory ' +
+-                    'leak detected. %d listeners added. ' +
+-                    'Use emitter.setMaxListeners() to increase limit.',
+-                    this._events[type].length);
+-      if (typeof console.trace === 'function') {
+-        // not supported in IE 10
+-        console.trace();
+-      }
+-    }
++  // Fast case: bit is much higher than all existing words
++  if (this.length <= s) {
++    for (var i = this.length; i < s + 1; i++)
++      this.words[i] = 0;
++    this.words[s] |= q;
++    this.length = s + 1;
++    return this;
+   }
+ 
++  // Add bit and propagate, if needed
++  var carry = q;
++  for (var i = s; carry !== 0 && i < this.length; i++) {
++    var w = this.words[i];
++    w += carry;
++    carry = w >>> 26;
++    w &= 0x3ffffff;
++    this.words[i] = w;
++  }
++  if (carry !== 0) {
++    this.words[i] = carry;
++    this.length++;
++  }
+   return this;
+ };
+ 
+-EventEmitter.prototype.on = EventEmitter.prototype.addListener;
++BN.prototype.cmpn = function cmpn(num) {
++  var sign = num < 0;
++  if (sign)
++    num = -num;
+ 
+-EventEmitter.prototype.once = function(type, listener) {
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
++  if (this.sign && !sign)
++    return -1;
++  else if (!this.sign && sign)
++    return 1;
+ 
+-  var fired = false;
++  num &= 0x3ffffff;
++  this.strip();
+ 
+-  function g() {
+-    this.removeListener(type, g);
+-
+-    if (!fired) {
+-      fired = true;
+-      listener.apply(this, arguments);
+-    }
++  var res;
++  if (this.length > 1) {
++    res = 1;
++  } else {
++    var w = this.words[0];
++    res = w === num ? 0 : w < num ? -1 : 1;
+   }
+-
+-  g.listener = listener;
+-  this.on(type, g);
+-
+-  return this;
++  if (this.sign)
++    res = -res;
++  return res;
+ };
+ 
+-// emits a 'removeListener' event iff the listener was removed
+-EventEmitter.prototype.removeListener = function(type, listener) {
+-  var list, position, length, i;
+-
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  if (!this._events || !this._events[type])
+-    return this;
+-
+-  list = this._events[type];
+-  length = list.length;
+-  position = -1;
+-
+-  if (list === listener ||
+-      (isFunction(list.listener) && list.listener === listener)) {
+-    delete this._events[type];
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+-
+-  } else if (isObject(list)) {
+-    for (i = length; i-- > 0;) {
+-      if (list[i] === listener ||
+-          (list[i].listener && list[i].listener === listener)) {
+-        position = i;
+-        break;
+-      }
+-    }
+-
+-    if (position < 0)
+-      return this;
+-
+-    if (list.length === 1) {
+-      list.length = 0;
+-      delete this._events[type];
+-    } else {
+-      list.splice(position, 1);
+-    }
+-
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+-  }
++// Compare two numbers and return:
++// 1 - if `this` > `num`
++// 0 - if `this` == `num`
++// -1 - if `this` < `num`
++BN.prototype.cmp = function cmp(num) {
++  if (this.sign && !num.sign)
++    return -1;
++  else if (!this.sign && num.sign)
++    return 1;
+ 
+-  return this;
++  var res = this.ucmp(num);
++  if (this.sign)
++    return -res;
++  else
++    return res;
+ };
+ 
+-EventEmitter.prototype.removeAllListeners = function(type) {
+-  var key, listeners;
++// Unsigned comparison
++BN.prototype.ucmp = function ucmp(num) {
++  // At this point both numbers have the same sign
++  if (this.length > num.length)
++    return 1;
++  else if (this.length < num.length)
++    return -1;
+ 
+-  if (!this._events)
+-    return this;
++  var res = 0;
++  for (var i = this.length - 1; i >= 0; i--) {
++    var a = this.words[i];
++    var b = num.words[i];
+ 
+-  // not listening for removeListener, no need to emit
+-  if (!this._events.removeListener) {
+-    if (arguments.length === 0)
+-      this._events = {};
+-    else if (this._events[type])
+-      delete this._events[type];
+-    return this;
++    if (a === b)
++      continue;
++    if (a < b)
++      res = -1;
++    else if (a > b)
++      res = 1;
++    break;
+   }
++  return res;
++};
+ 
+-  // emit removeListener for all listeners on all events
+-  if (arguments.length === 0) {
+-    for (key in this._events) {
+-      if (key === 'removeListener') continue;
+-      this.removeAllListeners(key);
+-    }
+-    this.removeAllListeners('removeListener');
+-    this._events = {};
+-    return this;
+-  }
++//
++// A reduce context, could be using montgomery or something better, depending
++// on the `m` itself.
++//
++BN.red = function red(num) {
++  return new Red(num);
++};
+ 
+-  listeners = this._events[type];
++BN.prototype.toRed = function toRed(ctx) {
++  assert(!this.red, 'Already a number in reduction context');
++  assert(!this.sign, 'red works only with positives');
++  return ctx.convertTo(this)._forceRed(ctx);
++};
+ 
+-  if (isFunction(listeners)) {
+-    this.removeListener(type, listeners);
+-  } else if (listeners) {
+-    // LIFO order
+-    while (listeners.length)
+-      this.removeListener(type, listeners[listeners.length - 1]);
+-  }
+-  delete this._events[type];
++BN.prototype.fromRed = function fromRed() {
++  assert(this.red, 'fromRed works only with numbers in reduction context');
++  return this.red.convertFrom(this);
++};
+ 
++BN.prototype._forceRed = function _forceRed(ctx) {
++  this.red = ctx;
+   return this;
+ };
+ 
+-EventEmitter.prototype.listeners = function(type) {
+-  var ret;
+-  if (!this._events || !this._events[type])
+-    ret = [];
+-  else if (isFunction(this._events[type]))
+-    ret = [this._events[type]];
+-  else
+-    ret = this._events[type].slice();
+-  return ret;
++BN.prototype.forceRed = function forceRed(ctx) {
++  assert(!this.red, 'Already a number in reduction context');
++  return this._forceRed(ctx);
+ };
+ 
+-EventEmitter.prototype.listenerCount = function(type) {
+-  if (this._events) {
+-    var evlistener = this._events[type];
+-
+-    if (isFunction(evlistener))
+-      return 1;
+-    else if (evlistener)
+-      return evlistener.length;
+-  }
+-  return 0;
++BN.prototype.redAdd = function redAdd(num) {
++  assert(this.red, 'redAdd works only with red numbers');
++  return this.red.add(this, num);
+ };
+ 
+-EventEmitter.listenerCount = function(emitter, type) {
+-  return emitter.listenerCount(type);
++BN.prototype.redIAdd = function redIAdd(num) {
++  assert(this.red, 'redIAdd works only with red numbers');
++  return this.red.iadd(this, num);
+ };
+ 
+-function isFunction(arg) {
+-  return typeof arg === 'function';
+-}
+-
+-function isNumber(arg) {
+-  return typeof arg === 'number';
+-}
+-
+-function isObject(arg) {
+-  return typeof arg === 'object' && arg !== null;
+-}
+-
+-function isUndefined(arg) {
+-  return arg === void 0;
+-}
+-
+-},{}],15:[function(require,module,exports){
+-// shim for using process in browser
+-
+-var process = module.exports = {};
+-var queue = [];
+-var draining = false;
+-var currentQueue;
+-var queueIndex = -1;
+-
+-function cleanUpNextTick() {
+-    draining = false;
+-    if (currentQueue.length) {
+-        queue = currentQueue.concat(queue);
+-    } else {
+-        queueIndex = -1;
+-    }
+-    if (queue.length) {
+-        drainQueue();
+-    }
+-}
++BN.prototype.redSub = function redSub(num) {
++  assert(this.red, 'redSub works only with red numbers');
++  return this.red.sub(this, num);
++};
+ 
+-function drainQueue() {
+-    if (draining) {
+-        return;
+-    }
+-    var timeout = setTimeout(cleanUpNextTick);
+-    draining = true;
++BN.prototype.redISub = function redISub(num) {
++  assert(this.red, 'redISub works only with red numbers');
++  return this.red.isub(this, num);
++};
+ 
+-    var len = queue.length;
+-    while(len) {
+-        currentQueue = queue;
+-        queue = [];
+-        while (++queueIndex < len) {
+-            if (currentQueue) {
+-                currentQueue[queueIndex].run();
+-            }
+-        }
+-        queueIndex = -1;
+-        len = queue.length;
+-    }
+-    currentQueue = null;
+-    draining = false;
+-    clearTimeout(timeout);
+-}
++BN.prototype.redShl = function redShl(num) {
++  assert(this.red, 'redShl works only with red numbers');
++  return this.red.shl(this, num);
++};
+ 
+-process.nextTick = function (fun) {
+-    var args = new Array(arguments.length - 1);
+-    if (arguments.length > 1) {
+-        for (var i = 1; i < arguments.length; i++) {
+-            args[i - 1] = arguments[i];
+-        }
+-    }
+-    queue.push(new Item(fun, args));
+-    if (queue.length === 1 && !draining) {
+-        setTimeout(drainQueue, 0);
+-    }
++BN.prototype.redMul = function redMul(num) {
++  assert(this.red, 'redMul works only with red numbers');
++  this.red._verify2(this, num);
++  return this.red.mul(this, num);
+ };
+ 
+-// v8 likes predictible objects
+-function Item(fun, array) {
+-    this.fun = fun;
+-    this.array = array;
+-}
+-Item.prototype.run = function () {
+-    this.fun.apply(null, this.array);
++BN.prototype.redIMul = function redIMul(num) {
++  assert(this.red, 'redMul works only with red numbers');
++  this.red._verify2(this, num);
++  return this.red.imul(this, num);
+ };
+-process.title = 'browser';
+-process.browser = true;
+-process.env = {};
+-process.argv = [];
+-process.version = ''; // empty string to avoid regexp issues
+-process.versions = {};
+ 
+-function noop() {}
++BN.prototype.redSqr = function redSqr() {
++  assert(this.red, 'redSqr works only with red numbers');
++  this.red._verify1(this);
++  return this.red.sqr(this);
++};
+ 
+-process.on = noop;
+-process.addListener = noop;
+-process.once = noop;
+-process.off = noop;
+-process.removeListener = noop;
+-process.removeAllListeners = noop;
+-process.emit = noop;
++BN.prototype.redISqr = function redISqr() {
++  assert(this.red, 'redISqr works only with red numbers');
++  this.red._verify1(this);
++  return this.red.isqr(this);
++};
+ 
+-process.binding = function (name) {
+-    throw new Error('process.binding is not supported');
++// Square root over p
++BN.prototype.redSqrt = function redSqrt() {
++  assert(this.red, 'redSqrt works only with red numbers');
++  this.red._verify1(this);
++  return this.red.sqrt(this);
+ };
+ 
+-process.cwd = function () { return '/' };
+-process.chdir = function (dir) {
+-    throw new Error('process.chdir is not supported');
++BN.prototype.redInvm = function redInvm() {
++  assert(this.red, 'redInvm works only with red numbers');
++  this.red._verify1(this);
++  return this.red.invm(this);
+ };
+-process.umask = function() { return 0; };
+ 
+-},{}],16:[function(require,module,exports){
+-'use strict'
++// Return negative clone of `this` % `red modulo`
++BN.prototype.redNeg = function redNeg() {
++  assert(this.red, 'redNeg works only with red numbers');
++  this.red._verify1(this);
++  return this.red.neg(this);
++};
+ 
+-var monotoneTriangulate = require('./lib/monotone')
+-var makeIndex = require('./lib/triangulation')
+-var delaunayFlip = require('./lib/delaunay')
+-var filterTriangulation = require('./lib/filter')
++BN.prototype.redPow = function redPow(num) {
++  assert(this.red && !num.red, 'redPow(normalNum)');
++  this.red._verify1(this);
++  return this.red.pow(this, num);
++};
+ 
+-module.exports = cdt2d
++// Prime numbers with efficient reduction
++var primes = {
++  k256: null,
++  p224: null,
++  p192: null,
++  p25519: null
++};
+ 
+-function canonicalizeEdge(e) {
+-  return [Math.min(e[0], e[1]), Math.max(e[0], e[1])]
+-}
++// Pseudo-Mersenne prime
++function MPrime(name, p) {
++  // P = 2 ^ N - K
++  this.name = name;
++  this.p = new BN(p, 16);
++  this.n = this.p.bitLength();
++  this.k = new BN(1).ishln(this.n).isub(this.p);
+ 
+-function compareEdge(a, b) {
+-  return a[0]-b[0] || a[1]-b[1]
++  this.tmp = this._tmp();
+ }
+ 
+-function canonicalizeEdges(edges) {
+-  return edges.map(canonicalizeEdge).sort(compareEdge)
+-}
++MPrime.prototype._tmp = function _tmp() {
++  var tmp = new BN(null);
++  tmp.words = new Array(Math.ceil(this.n / 13));
++  return tmp;
++};
+ 
+-function getDefault(options, property, dflt) {
+-  if(property in options) {
+-    return options[property]
+-  }
+-  return dflt
+-}
++MPrime.prototype.ireduce = function ireduce(num) {
++  // Assumes that `num` is less than `P^2`
++  // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
++  var r = num;
++  var rlen;
+ 
+-function cdt2d(points, edges, options) {
++  do {
++    this.split(r, this.tmp);
++    r = this.imulK(r);
++    r = r.iadd(this.tmp);
++    rlen = r.bitLength();
++  } while (rlen > this.n);
+ 
+-  if(!Array.isArray(edges)) {
+-    options = edges || {}
+-    edges = []
++  var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
++  if (cmp === 0) {
++    r.words[0] = 0;
++    r.length = 1;
++  } else if (cmp > 0) {
++    r.isub(this.p);
+   } else {
+-    options = options || {}
+-    edges = edges || []
++    r.strip();
+   }
+ 
+-  //Parse out options
+-  var delaunay = !!getDefault(options, 'delaunay', true)
+-  var interior = !!getDefault(options, 'interior', true)
+-  var exterior = !!getDefault(options, 'exterior', true)
+-  var infinity = !!getDefault(options, 'infinity', false)
++  return r;
++};
+ 
+-  //Handle trivial case
+-  if((!interior && !exterior) || points.length === 0) {
+-    return []
+-  }
++MPrime.prototype.split = function split(input, out) {
++  input.ishrn(this.n, 0, out);
++};
+ 
+-  //Construct initial triangulation
+-  var cells = monotoneTriangulate(points, edges)
++MPrime.prototype.imulK = function imulK(num) {
++  return num.imul(this.k);
++};
+ 
+-  //If delaunay refinement needed, then improve quality by edge flipping
+-  if(delaunay || interior !== exterior || infinity) {
++function K256() {
++  MPrime.call(
++    this,
++    'k256',
++    'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
++}
++inherits(K256, MPrime);
+ 
+-    //Index all of the cells to support fast neighborhood queries
+-    var triangulation = makeIndex(points.length, canonicalizeEdges(edges))
+-    for(var i=0; i<cells.length; ++i) {
+-      var f = cells[i]
+-      triangulation.addTriangle(f[0], f[1], f[2])
+-    }
++K256.prototype.split = function split(input, output) {
++  // 256 = 9 * 26 + 22
++  var mask = 0x3fffff;
+ 
+-    //Run edge flipping
+-    if(delaunay) {
+-      delaunayFlip(points, triangulation)
+-    }
++  var outLen = Math.min(input.length, 9);
++  for (var i = 0; i < outLen; i++)
++    output.words[i] = input.words[i];
++  output.length = outLen;
+ 
+-    //Filter points
+-    if(!exterior) {
+-      return filterTriangulation(triangulation, -1)
+-    } else if(!interior) {
+-      return filterTriangulation(triangulation,  1, infinity)
+-    } else if(infinity) {
+-      return filterTriangulation(triangulation, 0, infinity)
+-    } else {
+-      return triangulation.cells()
+-    }
+-    
+-  } else {
+-    return cells
++  if (input.length <= 9) {
++    input.words[0] = 0;
++    input.length = 1;
++    return;
+   }
+-}
+ 
+-},{"./lib/delaunay":17,"./lib/filter":18,"./lib/monotone":19,"./lib/triangulation":20}],17:[function(require,module,exports){
+-'use strict'
++  // Shift by 9 limbs
++  var prev = input.words[9];
++  output.words[output.length++] = prev & mask;
+ 
+-var inCircle = require('robust-in-sphere')[4]
+-var bsearch = require('binary-search-bounds')
++  for (var i = 10; i < input.length; i++) {
++    var next = input.words[i];
++    input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
++    prev = next;
++  }
++  input.words[i - 10] = prev >>> 22;
++  input.length -= 9;
++};
+ 
+-module.exports = delaunayRefine
++K256.prototype.imulK = function imulK(num) {
++  // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
++  num.words[num.length] = 0;
++  num.words[num.length + 1] = 0;
++  num.length += 2;
+ 
+-function testFlip(points, triangulation, stack, a, b, x) {
+-  var y = triangulation.opposite(a, b)
++  // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
++  var hi;
++  var lo = 0;
++  for (var i = 0; i < num.length; i++) {
++    var w = num.words[i];
++    hi = w * 0x40;
++    lo += w * 0x3d1;
++    hi += (lo / 0x4000000) | 0;
++    lo &= 0x3ffffff;
+ 
+-  //Test boundary edge
+-  if(y < 0) {
+-    return
+-  }
++    num.words[i] = lo;
+ 
+-  //Swap edge if order flipped
+-  if(b < a) {
+-    var tmp = a
+-    a = b
+-    b = tmp
+-    tmp = x
+-    x = y
+-    y = tmp
++    lo = hi;
+   }
+ 
+-  //Test if edge is constrained
+-  if(triangulation.isConstraint(a, b)) {
+-    return
++  // Fast length reduction
++  if (num.words[num.length - 1] === 0) {
++    num.length--;
++    if (num.words[num.length - 1] === 0)
++      num.length--;
+   }
++  return num;
++};
+ 
+-  //Test if edge is delaunay
+-  if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
+-    stack.push(a, b)
+-  }
++function P224() {
++  MPrime.call(
++    this,
++    'p224',
++    'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
+ }
++inherits(P224, MPrime);
+ 
+-//Assume edges are sorted lexicographically
+-function delaunayRefine(points, triangulation) {
+-  var stack = []
++function P192() {
++  MPrime.call(
++    this,
++    'p192',
++    'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
++}
++inherits(P192, MPrime);
+ 
+-  var numPoints = points.length
+-  var stars = triangulation.stars
+-  for(var a=0; a<numPoints; ++a) {
+-    var star = stars[a]
+-    for(var j=1; j<star.length; j+=2) {
+-      var b = star[j]
++function P25519() {
++  // 2 ^ 255 - 19
++  MPrime.call(
++    this,
++    '25519',
++    '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
++}
++inherits(P25519, MPrime);
+ 
+-      //If order is not consistent, then skip edge
+-      if(b < a) {
+-        continue
+-      }
++P25519.prototype.imulK = function imulK(num) {
++  // K = 0x13
++  var carry = 0;
++  for (var i = 0; i < num.length; i++) {
++    var hi = num.words[i] * 0x13 + carry;
++    var lo = hi & 0x3ffffff;
++    hi >>>= 26;
+ 
+-      //Check if edge is constrained
+-      if(triangulation.isConstraint(a, b)) {
+-        continue
+-      }
++    num.words[i] = lo;
++    carry = hi;
++  }
++  if (carry !== 0)
++    num.words[num.length++] = carry;
++  return num;
++};
+ 
+-      //Find opposite edge
+-      var x = star[j-1], y = -1
+-      for(var k=1; k<star.length; k+=2) {
+-        if(star[k-1] === b) {
+-          y = star[k]
+-          break
+-        }
+-      }
++// Exported mostly for testing purposes, use plain name instead
++BN._prime = function prime(name) {
++  // Cached version of prime
++  if (primes[name])
++    return primes[name];
+ 
+-      //If this is a boundary edge, don't flip it
+-      if(y < 0) {
+-        continue
+-      }
++  var prime;
++  if (name === 'k256')
++    prime = new K256();
++  else if (name === 'p224')
++    prime = new P224();
++  else if (name === 'p192')
++    prime = new P192();
++  else if (name === 'p25519')
++    prime = new P25519();
++  else
++    throw new Error('Unknown prime ' + name);
++  primes[name] = prime;
+ 
+-      //If edge is in circle, flip it
+-      if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
+-        stack.push(a, b)
+-      }
+-    }
++  return prime;
++};
++
++//
++// Base reduction engine
++//
++function Red(m) {
++  if (typeof m === 'string') {
++    var prime = BN._prime(m);
++    this.m = prime.p;
++    this.prime = prime;
++  } else {
++    this.m = m;
++    this.prime = null;
+   }
++}
+ 
+-  while(stack.length > 0) {
+-    var b = stack.pop()
+-    var a = stack.pop()
++Red.prototype._verify1 = function _verify1(a) {
++  assert(!a.sign, 'red works only with positives');
++  assert(a.red, 'red works only with red numbers');
++};
+ 
+-    //Find opposite pairs
+-    var x = -1, y = -1
+-    var star = stars[a]
+-    for(var i=1; i<star.length; i+=2) {
+-      var s = star[i-1]
+-      var t = star[i]
+-      if(s === b) {
+-        y = t
+-      } else if(t === b) {
+-        x = s
+-      }
+-    }
++Red.prototype._verify2 = function _verify2(a, b) {
++  assert(!a.sign && !b.sign, 'red works only with positives');
++  assert(a.red && a.red === b.red,
++         'red works only with red numbers');
++};
+ 
+-    //If x/y are both valid then skip edge
+-    if(x < 0 || y < 0) {
+-      continue
+-    }
++Red.prototype.imod = function imod(a) {
++  if (this.prime)
++    return this.prime.ireduce(a)._forceRed(this);
++  return a.mod(this.m)._forceRed(this);
++};
+ 
+-    //If edge is now delaunay, then don't flip it
+-    if(inCircle(points[a], points[b], points[x], points[y]) >= 0) {
+-      continue
+-    }
++Red.prototype.neg = function neg(a) {
++  var r = a.clone();
++  r.sign = !r.sign;
++  return r.iadd(this.m)._forceRed(this);
++};
+ 
+-    //Flip the edge
+-    triangulation.flip(a, b)
++Red.prototype.add = function add(a, b) {
++  this._verify2(a, b);
+ 
+-    //Test flipping neighboring edges
+-    testFlip(points, triangulation, stack, x, a, y)
+-    testFlip(points, triangulation, stack, a, y, x)
+-    testFlip(points, triangulation, stack, y, b, x)
+-    testFlip(points, triangulation, stack, b, x, y)
+-  }
+-}
++  var res = a.add(b);
++  if (res.cmp(this.m) >= 0)
++    res.isub(this.m);
++  return res._forceRed(this);
++};
+ 
+-},{"binary-search-bounds":21,"robust-in-sphere":22}],18:[function(require,module,exports){
+-'use strict'
++Red.prototype.iadd = function iadd(a, b) {
++  this._verify2(a, b);
+ 
+-var bsearch = require('binary-search-bounds')
++  var res = a.iadd(b);
++  if (res.cmp(this.m) >= 0)
++    res.isub(this.m);
++  return res;
++};
+ 
+-module.exports = classifyFaces
++Red.prototype.sub = function sub(a, b) {
++  this._verify2(a, b);
+ 
+-function FaceIndex(cells, neighbor, constraint, flags, active, next, boundary) {
+-  this.cells       = cells
+-  this.neighbor    = neighbor
+-  this.flags       = flags
+-  this.constraint  = constraint
+-  this.active      = active
+-  this.next        = next
+-  this.boundary    = boundary
+-}
++  var res = a.sub(b);
++  if (res.cmpn(0) < 0)
++    res.iadd(this.m);
++  return res._forceRed(this);
++};
+ 
+-var proto = FaceIndex.prototype
++Red.prototype.isub = function isub(a, b) {
++  this._verify2(a, b);
+ 
+-function compareCell(a, b) {
+-  return a[0] - b[0] ||
+-         a[1] - b[1] ||
+-         a[2] - b[2]
+-}
++  var res = a.isub(b);
++  if (res.cmpn(0) < 0)
++    res.iadd(this.m);
++  return res;
++};
+ 
+-proto.locate = (function() {
+-  var key = [0,0,0]
+-  return function(a, b, c) {
+-    var x = a, y = b, z = c
+-    if(b < c) {
+-      if(b < a) {
+-        x = b
+-        y = c
+-        z = a
+-      }
+-    } else if(c < a) {
+-      x = c
+-      y = a
+-      z = b
+-    }
+-    if(x < 0) {
+-      return -1
+-    }
+-    key[0] = x
+-    key[1] = y
+-    key[2] = z
+-    return bsearch.eq(this.cells, key, compareCell)
+-  }
+-})()
++Red.prototype.shl = function shl(a, num) {
++  this._verify1(a);
++  return this.imod(a.shln(num));
++};
+ 
+-function indexCells(triangulation, infinity) {
+-  //First get cells and canonicalize
+-  var cells = triangulation.cells()
+-  var nc = cells.length
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    var x = c[0], y = c[1], z = c[2]
+-    if(y < z) {
+-      if(y < x) {
+-        c[0] = y
+-        c[1] = z
+-        c[2] = x
+-      }
+-    } else if(z < x) {
+-      c[0] = z
+-      c[1] = x
+-      c[2] = y
+-    }
+-  }
+-  cells.sort(compareCell)
++Red.prototype.imul = function imul(a, b) {
++  this._verify2(a, b);
++  return this.imod(a.imul(b));
++};
+ 
+-  //Initialize flag array
+-  var flags = new Array(nc)
+-  for(var i=0; i<flags.length; ++i) {
+-    flags[i] = 0
+-  }
++Red.prototype.mul = function mul(a, b) {
++  this._verify2(a, b);
++  return this.imod(a.mul(b));
++};
+ 
+-  //Build neighbor index, initialize queues
+-  var active = []
+-  var next   = []
+-  var neighbor = new Array(3*nc)
+-  var constraint = new Array(3*nc)
+-  var boundary = null
+-  if(infinity) {
+-    boundary = []
++Red.prototype.isqr = function isqr(a) {
++  return this.imul(a, a);
++};
++
++Red.prototype.sqr = function sqr(a) {
++  return this.mul(a, a);
++};
++
++Red.prototype.sqrt = function sqrt(a) {
++  if (a.cmpn(0) === 0)
++    return a.clone();
++
++  var mod3 = this.m.andln(3);
++  assert(mod3 % 2 === 1);
++
++  // Fast case
++  if (mod3 === 3) {
++    var pow = this.m.add(new BN(1)).ishrn(2);
++    var r = this.pow(a, pow);
++    return r;
+   }
+-  var index = new FaceIndex(
+-    cells,
+-    neighbor,
+-    constraint,
+-    flags,
+-    active,
+-    next,
+-    boundary)
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<3; ++j) {
+-      var x = c[j], y = c[(j+1)%3]
+-      var a = neighbor[3*i+j] = index.locate(y, x, triangulation.opposite(y, x))
+-      var b = constraint[3*i+j] = triangulation.isConstraint(x, y)
+-      if(a < 0) {
+-        if(b) {
+-          next.push(i)
+-        } else {
+-          active.push(i)
+-          flags[i] = 1
+-        }
+-        if(infinity) {
+-          boundary.push([y, x, -1])
+-        }
+-      }
+-    }
++
++  // Tonelli-Shanks algorithm (Totally unoptimized and slow)
++  //
++  // Find Q and S, that Q * 2 ^ S = (P - 1)
++  var q = this.m.subn(1);
++  var s = 0;
++  while (q.cmpn(0) !== 0 && q.andln(1) === 0) {
++    s++;
++    q.ishrn(1);
+   }
+-  return index
+-}
++  assert(q.cmpn(0) !== 0);
+ 
+-function filterCells(cells, flags, target) {
+-  var ptr = 0
+-  for(var i=0; i<cells.length; ++i) {
+-    if(flags[i] === target) {
+-      cells[ptr++] = cells[i]
+-    }
++  var one = new BN(1).toRed(this);
++  var nOne = one.redNeg();
++
++  // Find quadratic non-residue
++  // NOTE: Max is such because of generalized Riemann hypothesis.
++  var lpow = this.m.subn(1).ishrn(1);
++  var z = this.m.bitLength();
++  z = new BN(2 * z * z).toRed(this);
++  while (this.pow(z, lpow).cmp(nOne) !== 0)
++    z.redIAdd(nOne);
++
++  var c = this.pow(z, q);
++  var r = this.pow(a, q.addn(1).ishrn(1));
++  var t = this.pow(a, q);
++  var m = s;
++  while (t.cmp(one) !== 0) {
++    var tmp = t;
++    for (var i = 0; tmp.cmp(one) !== 0; i++)
++      tmp = tmp.redSqr();
++    assert(i < m);
++    var b = this.pow(c, new BN(1).ishln(m - i - 1));
++
++    r = r.redMul(b);
++    c = b.redSqr();
++    t = t.redMul(c);
++    m = i;
+   }
+-  cells.length = ptr
+-  return cells
+-}
+ 
+-function classifyFaces(triangulation, target, infinity) {
+-  var index = indexCells(triangulation, infinity)
++  return r;
++};
+ 
+-  if(target === 0) {
+-    if(infinity) {
+-      return index.cells.concat(index.boundary)
+-    } else {
+-      return index.cells
+-    }
++Red.prototype.invm = function invm(a) {
++  var inv = a._invmp(this.m);
++  if (inv.sign) {
++    inv.sign = false;
++    return this.imod(inv).redNeg();
++  } else {
++    return this.imod(inv);
+   }
++};
+ 
+-  var side = 1
+-  var active = index.active
+-  var next = index.next
+-  var flags = index.flags
+-  var cells = index.cells
+-  var constraint = index.constraint
+-  var neighbor = index.neighbor
++Red.prototype.pow = function pow(a, num) {
++  var w = [];
+ 
+-  while(active.length > 0 || next.length > 0) {
+-    while(active.length > 0) {
+-      var t = active.pop()
+-      if(flags[t] === -side) {
+-        continue
+-      }
+-      flags[t] = side
+-      var c = cells[t]
+-      for(var j=0; j<3; ++j) {
+-        var f = neighbor[3*t+j]
+-        if(f >= 0 && flags[f] === 0) {
+-          if(constraint[3*t+j]) {
+-            next.push(f)
+-          } else {
+-            active.push(f)
+-            flags[f] = side
+-          }
+-        }
+-      }
+-    }
++  if (num.cmpn(0) === 0)
++    return new BN(1);
+ 
+-    //Swap arrays and loop
+-    var tmp = next
+-    next = active
+-    active = tmp
+-    next.length = 0
+-    side = -side
++  var q = num.clone();
++
++  while (q.cmpn(0) !== 0) {
++    w.push(q.andln(1));
++    q.ishrn(1);
+   }
+ 
+-  var result = filterCells(cells, flags, target)
+-  if(infinity) {
+-    return result.concat(index.boundary)
++  // Skip leading zeroes
++  var res = a;
++  for (var i = 0; i < w.length; i++, res = this.sqr(res))
++    if (w[i] !== 0)
++      break;
++
++  if (++i < w.length) {
++    for (var q = this.sqr(res); i < w.length; i++, q = this.sqr(q)) {
++      if (w[i] === 0)
++        continue;
++      res = this.mul(res, q);
++    }
+   }
+-  return result
+-}
+ 
+-},{"binary-search-bounds":21}],19:[function(require,module,exports){
+-'use strict'
++  return res;
++};
+ 
+-var bsearch = require('binary-search-bounds')
+-var orient = require('robust-orientation')[3]
++Red.prototype.convertTo = function convertTo(num) {
++  var r = num.mod(this.m);
++  if (r === num)
++    return r.clone();
++  else
++    return r;
++};
+ 
+-var EVENT_POINT = 0
+-var EVENT_END   = 1
+-var EVENT_START = 2
++Red.prototype.convertFrom = function convertFrom(num) {
++  var res = num.clone();
++  res.red = null;
++  return res;
++};
+ 
+-module.exports = monotoneTriangulate
++//
++// Montgomery method engine
++//
+ 
+-//A partial convex hull fragment, made of two unimonotone polygons
+-function PartialHull(a, b, idx, lowerIds, upperIds) {
+-  this.a = a
+-  this.b = b
+-  this.idx = idx
+-  this.lowerIds = lowerIds
+-  this.upperIds = upperIds
+-}
++BN.mont = function mont(num) {
++  return new Mont(num);
++};
+ 
+-//An event in the sweep line procedure
+-function Event(a, b, type, idx) {
+-  this.a    = a
+-  this.b    = b
+-  this.type = type
+-  this.idx  = idx
+-}
++function Mont(m) {
++  Red.call(this, m);
+ 
+-//This is used to compare events for the sweep line procedure
+-// Points are:
+-//  1. sorted lexicographically
+-//  2. sorted by type  (point < end < start)
+-//  3. segments sorted by winding order
+-//  4. sorted by index
+-function compareEvent(a, b) {
+-  var d =
+-    (a.a[0] - b.a[0]) ||
+-    (a.a[1] - b.a[1]) ||
+-    (a.type - b.type)
+-  if(d) { return d }
+-  if(a.type !== EVENT_POINT) {
+-    d = orient(a.a, a.b, b.b)
+-    if(d) { return d }
+-  }
+-  return a.idx - b.idx
+-}
++  this.shift = this.m.bitLength();
++  if (this.shift % 26 !== 0)
++    this.shift += 26 - (this.shift % 26);
++  this.r = new BN(1).ishln(this.shift);
++  this.r2 = this.imod(this.r.sqr());
++  this.rinv = this.r._invmp(this.m);
+ 
+-function testPoint(hull, p) {
+-  return orient(hull.a, hull.b, p)
++  this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
++  this.minv.sign = true;
++  this.minv = this.minv.mod(this.r);
+ }
++inherits(Mont, Red);
+ 
+-function addPoint(cells, hulls, points, p, idx) {
+-  var lo = bsearch.lt(hulls, p, testPoint)
+-  var hi = bsearch.gt(hulls, p, testPoint)
+-  for(var i=lo; i<hi; ++i) {
+-    var hull = hulls[i]
++Mont.prototype.convertTo = function convertTo(num) {
++  return this.imod(num.shln(this.shift));
++};
+ 
+-    //Insert p into lower hull
+-    var lowerIds = hull.lowerIds
+-    var m = lowerIds.length
+-    while(m > 1 && orient(
+-        points[lowerIds[m-2]],
+-        points[lowerIds[m-1]],
+-        p) > 0) {
+-      cells.push(
+-        [lowerIds[m-1],
+-         lowerIds[m-2],
+-         idx])
+-      m -= 1
+-    }
+-    lowerIds.length = m
+-    lowerIds.push(idx)
++Mont.prototype.convertFrom = function convertFrom(num) {
++  var r = this.imod(num.mul(this.rinv));
++  r.red = null;
++  return r;
++};
+ 
+-    //Insert p into upper hull
+-    var upperIds = hull.upperIds
+-    var m = upperIds.length
+-    while(m > 1 && orient(
+-        points[upperIds[m-2]],
+-        points[upperIds[m-1]],
+-        p) < 0) {
+-      cells.push(
+-        [upperIds[m-2],
+-         upperIds[m-1],
+-         idx])
+-      m -= 1
+-    }
+-    upperIds.length = m
+-    upperIds.push(idx)
++Mont.prototype.imul = function imul(a, b) {
++  if (a.cmpn(0) === 0 || b.cmpn(0) === 0) {
++    a.words[0] = 0;
++    a.length = 1;
++    return a;
+   }
+-}
+ 
+-function findSplit(hull, edge) {
+-  var d
+-  if(hull.a[0] < edge.a[0]) {
+-    d = orient(hull.a, hull.b, edge.a)
+-  } else {
+-    d = orient(edge.b, edge.a, hull.a)
+-  }
+-  if(d) { return d }
+-  if(edge.b[0] < hull.b[0]) {
+-    d = orient(hull.a, hull.b, edge.b)
+-  } else {
+-    d = orient(edge.b, edge.a, hull.b)
+-  }
+-  return d || hull.idx - edge.idx
+-}
++  var t = a.imul(b);
++  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
++  var u = t.isub(c).ishrn(this.shift);
++  var res = u;
++  if (u.cmp(this.m) >= 0)
++    res = u.isub(this.m);
++  else if (u.cmpn(0) < 0)
++    res = u.iadd(this.m);
+ 
+-function splitHulls(hulls, points, event) {
+-  var splitIdx = bsearch.le(hulls, event, findSplit)
+-  var hull = hulls[splitIdx]
+-  var upperIds = hull.upperIds
+-  var x = upperIds[upperIds.length-1]
+-  hull.upperIds = [x]
+-  hulls.splice(splitIdx+1, 0,
+-    new PartialHull(event.a, event.b, event.idx, [x], upperIds))
+-}
++  return res._forceRed(this);
++};
+ 
++Mont.prototype.mul = function mul(a, b) {
++  if (a.cmpn(0) === 0 || b.cmpn(0) === 0)
++    return new BN(0)._forceRed(this);
+ 
+-function mergeHulls(hulls, points, event) {
+-  //Swap pointers for merge search
+-  var tmp = event.a
+-  event.a = event.b
+-  event.b = tmp
+-  var mergeIdx = bsearch.eq(hulls, event, findSplit)
+-  var upper = hulls[mergeIdx]
+-  var lower = hulls[mergeIdx-1]
+-  lower.upperIds = upper.upperIds
+-  hulls.splice(mergeIdx, 1)
+-}
++  var t = a.mul(b);
++  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
++  var u = t.isub(c).ishrn(this.shift);
++  var res = u;
++  if (u.cmp(this.m) >= 0)
++    res = u.isub(this.m);
++  else if (u.cmpn(0) < 0)
++    res = u.iadd(this.m);
+ 
++  return res._forceRed(this);
++};
+ 
+-function monotoneTriangulate(points, edges) {
++Mont.prototype.invm = function invm(a) {
++  // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
++  var res = this.imod(a._invmp(this.m).mul(this.r2));
++  return res._forceRed(this);
++};
+ 
+-  var numPoints = points.length
+-  var numEdges = edges.length
++})(typeof module === 'undefined' || module, this);
+ 
+-  var events = []
++},{}],30:[function(require,module,exports){
++'use strict'
+ 
+-  //Create point events
+-  for(var i=0; i<numPoints; ++i) {
+-    events.push(new Event(
+-      points[i],
+-      null,
+-      EVENT_POINT,
+-      i))
++module.exports = boxIntersectWrapper
++
++var pool = require('typedarray-pool')
++var sweep = require('./lib/sweep')
++var boxIntersectIter = require('./lib/intersect')
++
++function boxEmpty(d, box) {
++  for(var j=0; j<d; ++j) {
++    if(!(box[j] <= box[j+d])) {
++      return true
++    }
+   }
++  return false
++}
+ 
+-  //Create edge events
+-  for(var i=0; i<numEdges; ++i) {
+-    var e = edges[i]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    if(a[0] < b[0]) {
+-      events.push(
+-        new Event(a, b, EVENT_START, i),
+-        new Event(b, a, EVENT_END, i))
+-    } else if(a[0] > b[0]) {
+-      events.push(
+-        new Event(b, a, EVENT_START, i),
+-        new Event(a, b, EVENT_END, i))
++//Unpack boxes into a flat typed array, remove empty boxes
++function convertBoxes(boxes, d, data, ids) {
++  var ptr = 0
++  var count = 0
++  for(var i=0, n=boxes.length; i<n; ++i) {
++    var b = boxes[i]
++    if(boxEmpty(d, b)) {
++      continue
++    }
++    for(var j=0; j<2*d; ++j) {
++      data[ptr++] = b[j]
+     }
++    ids[count++] = i
+   }
++  return count
++}
+ 
+-  //Sort events
+-  events.sort(compareEvent)
++//Perform type conversions, check bounds
++function boxIntersect(red, blue, visit, full) {
++  var n = red.length
++  var m = blue.length
+ 
+-  //Initialize hull
+-  var minX = events[0].a[0] - (1 + Math.abs(events[0].a[0])) * Math.pow(2, -52)
+-  var hull = [ new PartialHull([minX, 1], [minX, 0], -1, [], [], [], []) ]
++  //If either array is empty, then we can skip this whole thing
++  if(n <= 0 || m <= 0) {
++    return
++  }
+ 
+-  //Process events in order
+-  var cells = []
+-  for(var i=0, numEvents=events.length; i<numEvents; ++i) {
+-    var event = events[i]
+-    var type = event.type
+-    if(type === EVENT_POINT) {
+-      addPoint(cells, hull, points, event.a, event.idx)
+-    } else if(type === EVENT_START) {
+-      splitHulls(hull, points, event)
+-    } else {
+-      mergeHulls(hull, points, event)
+-    }
++  //Compute dimension, if it is 0 then we skip
++  var d = (red[0].length)>>>1
++  if(d <= 0) {
++    return
+   }
+ 
+-  //Return triangulation
+-  return cells
+-}
++  var retval
+ 
+-},{"binary-search-bounds":21,"robust-orientation":133}],20:[function(require,module,exports){
+-'use strict'
++  //Convert red boxes
++  var redList  = pool.mallocDouble(2*d*n)
++  var redIds   = pool.mallocInt32(n)
++  n = convertBoxes(red, d, redList, redIds)
+ 
+-var bsearch = require('binary-search-bounds')
++  if(n > 0) {
++    if(d === 1 && full) {
++      //Special case: 1d complete
++      sweep.init(n)
++      retval = sweep.sweepComplete(
++        d, visit, 
++        0, n, redList, redIds,
++        0, n, redList, redIds)
++    } else {
+ 
+-module.exports = createTriangulation
++      //Convert blue boxes
++      var blueList = pool.mallocDouble(2*d*m)
++      var blueIds  = pool.mallocInt32(m)
++      m = convertBoxes(blue, d, blueList, blueIds)
+ 
+-function Triangulation(stars, edges) {
+-  this.stars = stars
+-  this.edges = edges
+-}
++      if(m > 0) {
++        sweep.init(n+m)
+ 
+-var proto = Triangulation.prototype
++        if(d === 1) {
++          //Special case: 1d bipartite
++          retval = sweep.sweepBipartite(
++            d, visit, 
++            0, n, redList,  redIds,
++            0, m, blueList, blueIds)
++        } else {
++          //General case:  d>1
++          retval = boxIntersectIter(
++            d, visit,    full,
++            n, redList,  redIds,
++            m, blueList, blueIds)
++        }
+ 
+-function removePair(list, j, k) {
+-  for(var i=1, n=list.length; i<n; i+=2) {
+-    if(list[i-1] === j && list[i] === k) {
+-      list[i-1] = list[n-2]
+-      list[i] = list[n-1]
+-      list.length = n - 2
+-      return
++        pool.free(blueList)
++        pool.free(blueIds)
++      }
+     }
+-  }
+-}
+ 
+-proto.isConstraint = (function() {
+-  var e = [0,0]
+-  function compareLex(a, b) {
+-    return a[0] - b[0] || a[1] - b[1]
+-  }
+-  return function(i, j) {
+-    e[0] = Math.min(i,j)
+-    e[1] = Math.max(i,j)
+-    return bsearch.eq(this.edges, e, compareLex) >= 0
++    pool.free(redList)
++    pool.free(redIds)
+   }
+-})()
+ 
+-proto.removeTriangle = function(i, j, k) {
+-  var stars = this.stars
+-  removePair(stars[i], j, k)
+-  removePair(stars[j], k, i)
+-  removePair(stars[k], i, j)
++  return retval
+ }
+ 
+-proto.addTriangle = function(i, j, k) {
+-  var stars = this.stars
+-  stars[i].push(j, k)
+-  stars[j].push(k, i)
+-  stars[k].push(i, j)
+-}
+ 
+-proto.opposite = function(j, i) {
+-  var list = this.stars[i]
+-  for(var k=1, n=list.length; k<n; k+=2) {
+-    if(list[k] === j) {
+-      return list[k-1]
+-    }
+-  }
+-  return -1
++var RESULT
++
++function appendItem(i,j) {
++  RESULT.push([i,j])
+ }
+ 
+-proto.flip = function(i, j) {
+-  var a = this.opposite(i, j)
+-  var b = this.opposite(j, i)
+-  this.removeTriangle(i, j, a)
+-  this.removeTriangle(j, i, b)
+-  this.addTriangle(i, b, a)
+-  this.addTriangle(j, a, b)
++function intersectFullArray(x) {
++  RESULT = []
++  boxIntersect(x, x, appendItem, true)
++  return RESULT
+ }
+ 
+-proto.edges = function() {
+-  var stars = this.stars
+-  var result = []
+-  for(var i=0, n=stars.length; i<n; ++i) {
+-    var list = stars[i]
+-    for(var j=0, m=list.length; j<m; j+=2) {
+-      result.push([list[j], list[j+1]])
+-    }
+-  }
+-  return result
++function intersectBipartiteArray(x, y) {
++  RESULT = []
++  boxIntersect(x, y, appendItem, false)
++  return RESULT
+ }
+ 
+-proto.cells = function() {
+-  var stars = this.stars
+-  var result = []
+-  for(var i=0, n=stars.length; i<n; ++i) {
+-    var list = stars[i]
+-    for(var j=0, m=list.length; j<m; j+=2) {
+-      var s = list[j]
+-      var t = list[j+1]
+-      if(i < Math.min(s, t)) {
+-        result.push([i, s, t])
++//User-friendly wrapper, handle full input and no-visitor cases
++function boxIntersectWrapper(arg0, arg1, arg2) {
++  var result
++  switch(arguments.length) {
++    case 1:
++      return intersectFullArray(arg0)
++    case 2:
++      if(typeof arg1 === 'function') {
++        return boxIntersect(arg0, arg0, arg1, true)
++      } else {
++        return intersectBipartiteArray(arg0, arg1)
+       }
+-    }
++    case 3:
++      return boxIntersect(arg0, arg1, arg2, false)
++    default:
++      throw new Error('box-intersect: Invalid arguments')
+   }
+-  return result
+ }
++},{"./lib/intersect":32,"./lib/sweep":36,"typedarray-pool":162}],31:[function(require,module,exports){
++'use strict'
+ 
+-function createTriangulation(numVerts, edges) {
+-  var stars = new Array(numVerts)
+-  for(var i=0; i<numVerts; ++i) {
+-    stars[i] = []
+-  }
+-  return new Triangulation(stars, edges)
+-}
++var DIMENSION   = 'd'
++var AXIS        = 'ax'
++var VISIT       = 'vv'
++var FLIP        = 'fp'
+ 
+-},{"binary-search-bounds":21}],21:[function(require,module,exports){
+-"use strict"
++var ELEM_SIZE   = 'es'
+ 
+-function compileSearch(funcName, predicate, reversed, extraArgs, earlyOut) {
+-  var code = [
+-    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
+-earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
+-";while(l<=h){\
+-var m=(l+h)>>>1,x=a[m]"]
+-  if(earlyOut) {
+-    if(predicate.indexOf("c") < 0) {
+-      code.push(";if(x===y){return m}else if(x<=y){")
+-    } else {
+-      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
+-    }
+-  } else {
+-    code.push(";if(", predicate, "){i=m;")
+-  }
+-  if(reversed) {
+-    code.push("l=m+1}else{h=m-1}")
+-  } else {
+-    code.push("h=m-1}else{l=m+1}")
+-  }
+-  code.push("}")
+-  if(earlyOut) {
+-    code.push("return -1};")
+-  } else {
+-    code.push("return i};")
+-  }
+-  return code.join("")
+-}
++var RED_START   = 'rs'
++var RED_END     = 're'
++var RED_BOXES   = 'rb'
++var RED_INDEX   = 'ri'
++var RED_PTR     = 'rp'
+ 
+-function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
+-  var result = new Function([
+-  compileSearch("A", "x" + predicate + "y", reversed, ["y"], earlyOut),
+-  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], earlyOut),
+-"function dispatchBsearch", suffix, "(a,y,c,l,h){\
+-if(typeof(c)==='function'){\
+-return P(a,(l===void 0)?0:l|0,(h===void 0)?a.length-1:h|0,y,c)\
+-}else{\
+-return A(a,(c===void 0)?0:c|0,(l===void 0)?a.length-1:l|0,y)\
+-}}\
+-return dispatchBsearch", suffix].join(""))
+-  return result()
+-}
++var BLUE_START  = 'bs'
++var BLUE_END    = 'be'
++var BLUE_BOXES  = 'bb'
++var BLUE_INDEX  = 'bi'
++var BLUE_PTR    = 'bp'
+ 
+-module.exports = {
+-  ge: compileBoundsSearch(">=", false, "GE"),
+-  gt: compileBoundsSearch(">", false, "GT"),
+-  lt: compileBoundsSearch("<", true, "LT"),
+-  le: compileBoundsSearch("<=", true, "LE"),
+-  eq: compileBoundsSearch("-", true, "EQ", true)
+-}
++var RETVAL      = 'rv'
+ 
+-},{}],22:[function(require,module,exports){
+-"use strict"
++var INNER_LABEL = 'Q'
+ 
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
+-var robustDiff = require("robust-subtract")
+-var robustScale = require("robust-scale")
++var ARGS = [
++  DIMENSION,
++  AXIS,
++  VISIT,
++  RED_START,
++  RED_END,
++  RED_BOXES,
++  RED_INDEX,
++  BLUE_START,
++  BLUE_END,
++  BLUE_BOXES,
++  BLUE_INDEX
++]
+ 
+-var NUM_EXPAND = 6
++function generateBruteForce(redMajor, flip, full) {
++  var funcName = 'bruteForce' + 
++    (redMajor ? 'Red' : 'Blue') + 
++    (flip ? 'Flip' : '') +
++    (full ? 'Full' : '')
+ 
+-function cofactor(m, c) {
+-  var result = new Array(m.length-1)
+-  for(var i=1; i<m.length; ++i) {
+-    var r = result[i-1] = new Array(m.length-1)
+-    for(var j=0,k=0; j<m.length; ++j) {
+-      if(j === c) {
+-        continue
+-      }
+-      r[k++] = m[i][j]
+-    }
+-  }
+-  return result
+-}
++  var code = ['function ', funcName, '(', ARGS.join(), '){',
++    'var ', ELEM_SIZE, '=2*', DIMENSION, ';']
+ 
+-function matrix(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = new Array(n)
+-    for(var j=0; j<n; ++j) {
+-      result[i][j] = ["m", j, "[", (n-i-2), "]"].join("")
+-    }
+-  }
+-  return result
+-}
++  var redLoop = 
++    'for(var i=' + RED_START + ',' + RED_PTR + '=' + ELEM_SIZE + '*' + RED_START + ';' +
++        'i<' + RED_END +';' +
++        '++i,' + RED_PTR + '+=' + ELEM_SIZE + '){' +
++        'var x0=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '],' +
++            'x1=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '+' + DIMENSION + '],' +
++            'xi=' + RED_INDEX + '[i];'
+ 
+-function generateSum(expr) {
+-  if(expr.length === 1) {
+-    return expr[0]
+-  } else if(expr.length === 2) {
+-    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  var blueLoop = 
++    'for(var j=' + BLUE_START + ',' + BLUE_PTR + '=' + ELEM_SIZE + '*' + BLUE_START + ';' +
++        'j<' + BLUE_END + ';' +
++        '++j,' + BLUE_PTR + '+=' + ELEM_SIZE + '){' +
++        'var y0=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '],' +
++            (full ? 'y1=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '+' + DIMENSION + '],' : '') +
++            'yi=' + BLUE_INDEX + '[j];'
++
++  if(redMajor) {
++    code.push(redLoop, INNER_LABEL, ':', blueLoop)
+   } else {
+-    var m = expr.length>>1
+-    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++    code.push(blueLoop, INNER_LABEL, ':', redLoop)
+   }
+-}
+ 
+-function makeProduct(a, b) {
+-  if(a.charAt(0) === "m") {
+-    if(b.charAt(0) === "w") {
+-      var toks = a.split("[")
+-      return ["w", b.substr(1), "m", toks[0].substr(1)].join("")
+-    } else {
+-      return ["prod(", a, ",", b, ")"].join("")
+-    }
++  if(full) {
++    code.push('if(y1<x0||x1<y0)continue;')
++  } else if(flip) {
++    code.push('if(y0<=x0||x1<y0)continue;')
+   } else {
+-    return makeProduct(b, a)
++    code.push('if(y0<x0||x1<y0)continue;')
+   }
+-}
+ 
+-function sign(s) {
+-  if(s & 1 !== 0) {
+-    return "-"
+-  }
+-  return ""
+-}
++  code.push('for(var k='+AXIS+'+1;k<'+DIMENSION+';++k){'+
++    'var r0='+RED_BOXES+'[k+'+RED_PTR+'],'+
++        'r1='+RED_BOXES+'[k+'+DIMENSION+'+'+RED_PTR+'],'+
++        'b0='+BLUE_BOXES+'[k+'+BLUE_PTR+'],'+
++        'b1='+BLUE_BOXES+'[k+'+DIMENSION+'+'+BLUE_PTR+'];'+
++      'if(r1<b0||b1<r0)continue ' + INNER_LABEL + ';}' +
++      'var ' + RETVAL + '=' + VISIT + '(')
+ 
+-function determinant(m) {
+-  if(m.length === 2) {
+-    return [["diff(", makeProduct(m[0][0], m[1][1]), ",", makeProduct(m[1][0], m[0][1]), ")"].join("")]
++  if(flip) {
++    code.push('yi,xi')
+   } else {
+-    var expr = []
+-    for(var i=0; i<m.length; ++i) {
+-      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
+-    }
+-    return expr
++    code.push('xi,yi')
+   }
+-}
+ 
+-function makeSquare(d, n) {
+-  var terms = []
+-  for(var i=0; i<n-2; ++i) {
+-    terms.push(["prod(m", d, "[", i, "],m", d, "[", i, "])"].join(""))
++  code.push(');if(' + RETVAL + '!==void 0)return ' + RETVAL + ';}}}')
++
++  return {
++    name: funcName, 
++    code: code.join('')
+   }
+-  return generateSum(terms)
+ }
+ 
+-function orientation(n) {
+-  var pos = []
+-  var neg = []
+-  var m = matrix(n)
+-  for(var i=0; i<n; ++i) {
+-    m[0][i] = "1"
+-    m[n-1][i] = "w"+i
+-  } 
+-  for(var i=0; i<n; ++i) {
+-    if((i&1)===0) {
+-      pos.push.apply(pos,determinant(cofactor(m, i)))
+-    } else {
+-      neg.push.apply(neg,determinant(cofactor(m, i)))
+-    }
++function bruteForcePlanner(full) {
++  var funcName = 'bruteForce' + (full ? 'Full' : 'Partial')
++  var prefix = []
++  var fargs = ARGS.slice()
++  if(!full) {
++    fargs.splice(3, 0, FLIP)
+   }
+-  var posExpr = generateSum(pos)
+-  var negExpr = generateSum(neg)
+-  var funcName = "exactInSphere" + n
+-  var funcArgs = []
+-  for(var i=0; i<n; ++i) {
+-    funcArgs.push("m" + i)
++
++  var code = ['function ' + funcName + '(' + fargs.join() + '){']
++
++  function invoke(redMajor, flip) {
++    var res = generateBruteForce(redMajor, flip, full)
++    prefix.push(res.code)
++    code.push('return ' + res.name + '(' + ARGS.join() + ');')
+   }
+-  var code = ["function ", funcName, "(", funcArgs.join(), "){"]
+-  for(var i=0; i<n; ++i) {
+-    code.push("var w",i,"=",makeSquare(i,n),";")
+-    for(var j=0; j<n; ++j) {
+-      if(j !== i) {
+-        code.push("var w",i,"m",j,"=scale(w",i,",m",j,"[0]);")
+-      }
+-    }
++
++  code.push('if(' + RED_END + '-' + RED_START + '>' +
++                    BLUE_END + '-' + BLUE_START + '){')
++
++  if(full) {
++    invoke(true, false)
++    code.push('}else{')
++    invoke(false, false)
++  } else {
++    code.push('if(' + FLIP + '){')
++    invoke(true, true)
++    code.push('}else{')
++    invoke(true, false)
++    code.push('}}else{if(' + FLIP + '){')
++    invoke(false, true)
++    code.push('}else{')
++    invoke(false, false)
++    code.push('}')
+   }
+-  code.push("var p=", posExpr, ",n=", negExpr, ",d=diff(p,n);return d[d.length-1];}return ", funcName)
+-  var proc = new Function("sum", "diff", "prod", "scale", code.join(""))
+-  return proc(robustSum, robustDiff, twoProduct, robustScale)
++  code.push('}}return ' + funcName)
++
++  var codeStr = prefix.join('') + code.join('')
++  var proc = new Function(codeStr)
++  return proc()
+ }
+ 
+-function inSphere0() { return 0 }
+-function inSphere1() { return 0 }
+-function inSphere2() { return 0 }
+ 
+-var CACHED = [
+-  inSphere0,
+-  inSphere1,
+-  inSphere2
+-]
++exports.partial = bruteForcePlanner(false)
++exports.full    = bruteForcePlanner(true)
++},{}],32:[function(require,module,exports){
++'use strict'
+ 
+-function slowInSphere(args) {
+-  var proc = CACHED[args.length]
+-  if(!proc) {
+-    proc = CACHED[args.length] = orientation(args.length)
+-  }
+-  return proc.apply(undefined, args)
+-}
++module.exports = boxIntersectIter
+ 
+-function generateInSphereTest() {
+-  while(CACHED.length <= NUM_EXPAND) {
+-    CACHED.push(orientation(CACHED.length))
+-  }
+-  var args = []
+-  var procArgs = ["slow"]
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    args.push("a" + i)
+-    procArgs.push("o" + i)
+-  }
+-  var code = [
+-    "function testInSphere(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
+-  ]
+-  for(var i=2; i<=NUM_EXPAND; ++i) {
+-    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
+-  }
+-  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return testInSphere")
+-  procArgs.push(code.join(""))
++var pool = require('typedarray-pool')
++var bits = require('bit-twiddle')
++var bruteForce = require('./brute')
++var bruteForcePartial = bruteForce.partial
++var bruteForceFull = bruteForce.full
++var sweep = require('./sweep')
++var findMedian = require('./median')
++var genPartition = require('./partition')
+ 
+-  var proc = Function.apply(undefined, procArgs)
++//Twiddle parameters
++var BRUTE_FORCE_CUTOFF    = 128       //Cut off for brute force search
++var SCAN_CUTOFF           = (1<<22)   //Cut off for two way scan
++var SCAN_COMPLETE_CUTOFF  = (1<<22)  
+ 
+-  module.exports = proc.apply(undefined, [slowInSphere].concat(CACHED))
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    module.exports[i] = CACHED[i]
+-  }
+-}
++//Partition functions
++var partitionInteriorContainsInterval = genPartition(
++  '!(lo>=p0)&&!(p1>=hi)', 
++  ['p0', 'p1'])
+ 
+-generateInSphereTest()
+-},{"robust-scale":134,"robust-subtract":135,"robust-sum":136,"two-product":149}],23:[function(require,module,exports){
+-'use strict'
++var partitionStartEqual = genPartition(
++  'lo===p0',
++  ['p0'])
+ 
+-module.exports = cleanPSLG
++var partitionStartLessThan = genPartition(
++  'lo<p0',
++  ['p0'])
+ 
+-var UnionFind = require('union-find')
+-var boxIntersect = require('box-intersect')
+-var compareCell = require('compare-cell')
+-var segseg = require('robust-segment-intersect')
+-var rat = require('big-rat')
+-var ratCmp = require('big-rat/cmp')
+-var ratToFloat = require('big-rat/to-float')
+-var ratVec = require('rat-vec')
+-var nextafter = require('nextafter')
++var partitionEndLessThanEqual = genPartition(
++  'hi<=p0',
++  ['p0'])
+ 
+-var solveIntersection = require('./lib/rat-seg-intersect')
++var partitionContainsPoint = genPartition(
++  'lo<=p0&&p0<=hi',
++  ['p0'])
+ 
+-//Bounds on a rational number when rounded to a float
+-function boundRat(r) {
+-  var f = ratToFloat(r)
+-  var cmp = ratCmp(rat(f), r)
+-  if(cmp < 0) {
+-    return [f, nextafter(f, Infinity)]
+-  } else if(cmp > 0) {
+-    return [nextafter(f, -Infinity), f]
+-  } else {
+-    return [f, f]
+-  }
+-}
++var partitionContainsPointProper = genPartition(
++  'lo<p0&&p0<=hi',
++  ['p0'])
+ 
+-//Convert a list of edges in a pslg to bounding boxes
+-function boundEdges(points, edges) {
+-  var bounds = new Array(edges.length)
+-  for(var i=0; i<edges.length; ++i) {
+-    var e = edges[i]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    bounds[i] = [
+-      Math.min(a[0], b[0]),
+-      Math.min(a[1], b[1]),
+-      Math.max(a[0], b[0]),
+-      Math.max(a[1], b[1]) ]
+-  }
+-  return bounds
+-}
++//Frame size for iterative loop
++var IFRAME_SIZE = 6
++var DFRAME_SIZE = 2
+ 
+-//Convert a list of points into bounding boxes by duplicating coords
+-function boundPoints(points) {
+-  var bounds = new Array(points.length)
+-  for(var i=0; i<points.length; ++i) {
+-    var p = points[i]
+-    bounds[i] = [ p[0], p[1], p[0], p[1] ]
++//Data for box statck
++var INIT_CAPACITY = 1024
++var BOX_ISTACK  = pool.mallocInt32(INIT_CAPACITY)
++var BOX_DSTACK  = pool.mallocDouble(INIT_CAPACITY)
++
++//Initialize iterative loop queue
++function iterInit(d, count) {
++  var levels = (8 * bits.log2(count+1) * (d+1))|0
++  var maxInts = bits.nextPow2(IFRAME_SIZE*levels)
++  if(BOX_ISTACK.length < maxInts) {
++    pool.free(BOX_ISTACK)
++    BOX_ISTACK = pool.mallocInt32(maxInts)
++  }
++  var maxDoubles = bits.nextPow2(DFRAME_SIZE*levels)
++  if(BOX_DSTACK < maxDoubles) {
++    pool.free(BOX_DSTACK)
++    BOX_DSTACK = pool.mallocDouble(maxDoubles)
+   }
+-  return bounds
+ }
+ 
+-//Find all pairs of crossing edges in a pslg (given edge bounds)
+-function getCrossings(points, edges, edgeBounds) {
+-  var result = []
+-  boxIntersect(edgeBounds, function(i, j) {
+-    var e = edges[i]
+-    var f = edges[j]
+-    if(e[0] === f[0] || e[0] === f[1] ||
+-       e[1] === f[0] || e[1] === f[1]) {
+-         return
+-    }
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    var c = points[f[0]]
+-    var d = points[f[1]]
+-    if(segseg(a, b, c, d)) {
+-      result.push([i, j])
+-    }
+-  })
+-  return result
+-}
++//Append item to queue
++function iterPush(ptr,
++  axis, 
++  redStart, redEnd, 
++  blueStart, blueEnd, 
++  state, 
++  lo, hi) {
+ 
+-//Find all pairs of crossing vertices in a pslg (given edge/vert bounds)
+-function getTJunctions(points, edges, edgeBounds, vertBounds) {
+-  var result = []
+-  boxIntersect(edgeBounds, vertBounds, function(i, v) {
+-    var e = edges[i]
+-    if(e[0] === v || e[1] === v) {
+-      return
+-    }
+-    var p = points[v]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    if(segseg(a, b, p, p)) {
+-      result.push([i, v])
+-    }
+-  })
+-  return result
++  var iptr = IFRAME_SIZE * ptr
++  BOX_ISTACK[iptr]   = axis
++  BOX_ISTACK[iptr+1] = redStart
++  BOX_ISTACK[iptr+2] = redEnd
++  BOX_ISTACK[iptr+3] = blueStart
++  BOX_ISTACK[iptr+4] = blueEnd
++  BOX_ISTACK[iptr+5] = state
++
++  var dptr = DFRAME_SIZE * ptr
++  BOX_DSTACK[dptr]   = lo
++  BOX_DSTACK[dptr+1] = hi
+ }
+ 
++//Special case:  Intersect single point with list of intervals
++function onePointPartial(
++  d, axis, visit, flip,
++  redStart, redEnd, red, redIndex,
++  blueOffset, blue, blueId) {
+ 
+-//Cut edges along crossings/tjunctions
+-function cutEdges(floatPoints, edges, crossings, junctions, useColor) {
++  var elemSize = 2 * d
++  var bluePtr  = blueOffset * elemSize
++  var blueX    = blue[bluePtr + axis]
+ 
+-  //Convert crossings into tjunctions by constructing rational points
+-  var ratPoints = []
+-  for(var i=0; i<crossings.length; ++i) {
+-    var crossing = crossings[i]
+-    var e = crossing[0]
+-    var f = crossing[1]
+-    var ee = edges[e]
+-    var ef = edges[f]
+-    var x = solveIntersection(
+-      ratVec(floatPoints[ee[0]]),
+-      ratVec(floatPoints[ee[1]]),
+-      ratVec(floatPoints[ef[0]]),
+-      ratVec(floatPoints[ef[1]]))
+-    if(!x) {
+-      //Segments are parallel, should already be handled by t-junctions
++red_loop:
++  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
++    var r0 = red[redPtr+axis]
++    var r1 = red[redPtr+axis+d]
++    if(blueX < r0 || r1 < blueX) {
+       continue
+     }
+-    var idx = ratPoints.length + floatPoints.length
+-    ratPoints.push(x)
+-    junctions.push([e, idx], [f, idx])
+-  }
+-
+-  //Sort tjunctions
+-  function getPoint(idx) {
+-    if(idx >= floatPoints.length) {
+-      return ratPoints[idx-floatPoints.length]
++    if(flip && blueX === r0) {
++      continue
+     }
+-    var p = floatPoints[idx]
+-    return [ rat(p[0]), rat(p[1]) ]
+-  }
+-  junctions.sort(function(a, b) {
+-    if(a[0] !== b[0]) {
+-      return a[0] - b[0]
++    var redId = redIndex[i]
++    for(var j=axis+1; j<d; ++j) {
++      var r0 = red[redPtr+j]
++      var r1 = red[redPtr+j+d]
++      var b0 = blue[bluePtr+j]
++      var b1 = blue[bluePtr+j+d]
++      if(r1 < b0 || b1 < r0) {
++        continue red_loop
++      }
+     }
+-    var u = getPoint(a[1])
+-    var v = getPoint(b[1])
+-    return ratCmp(u[0], v[0]) || ratCmp(u[1], v[1])
+-  })
++    var retval
++    if(flip) {
++      retval = visit(blueId, redId)
++    } else {
++      retval = visit(redId, blueId)
++    }
++    if(retval !== void 0) {
++      return retval
++    }
++  }
++}
+ 
+-  //Split edges along junctions
+-  for(var i=junctions.length-1; i>=0; --i) {
+-    var junction = junctions[i]
+-    var e = junction[0]
++//Special case:  Intersect one point with list of intervals
++function onePointFull(
++  d, axis, visit,
++  redStart, redEnd, red, redIndex,
++  blueOffset, blue, blueId) {
+ 
+-    var edge = edges[e]
+-    var s = edge[0]
+-    var t = edge[1]
++  var elemSize = 2 * d
++  var bluePtr  = blueOffset * elemSize
++  var blueX    = blue[bluePtr + axis]
+ 
+-    //Check if edge is not lexicographically sorted
+-    var a = floatPoints[s]
+-    var b = floatPoints[t]
+-    if(((a[0] - b[0]) || (a[1] - b[1])) < 0) {
+-      var tmp = s
+-      s = t
+-      t = tmp
++red_loop:
++  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
++    var redId = redIndex[i]
++    if(redId === blueId) {
++      continue
+     }
+-
+-    //Split leading edge
+-    edge[0] = s
+-    var last = edge[1] = junction[1]
+-
+-    //If we are grouping edges by color, remember to track data
+-    var color
+-    if(useColor) {
+-      color = edge[2]
++    var r0 = red[redPtr+axis]
++    var r1 = red[redPtr+axis+d]
++    if(blueX < r0 || r1 < blueX) {
++      continue
+     }
+-
+-    //Split other edges
+-    while(i > 0 && junctions[i-1][0] === e) {
+-      var junction = junctions[--i]
+-      var next = junction[1]
+-      if(useColor) {
+-        edges.push([last, next, color])
+-      } else {
+-        edges.push([last, next])
++    for(var j=axis+1; j<d; ++j) {
++      var r0 = red[redPtr+j]
++      var r1 = red[redPtr+j+d]
++      var b0 = blue[bluePtr+j]
++      var b1 = blue[bluePtr+j+d]
++      if(r1 < b0 || b1 < r0) {
++        continue red_loop
+       }
+-      last = next
+     }
+-
+-    //Add final edge
+-    if(useColor) {
+-      edges.push([last, t, color])
+-    } else {
+-      edges.push([last, t])
++    var retval = visit(redId, blueId)
++    if(retval !== void 0) {
++      return retval
+     }
+   }
+-
+-  //Return constructed rational points
+-  return ratPoints
+ }
+ 
+-//Merge overlapping points
+-function dedupPoints(floatPoints, ratPoints, floatBounds) {
+-  var numPoints = floatPoints.length + ratPoints.length
+-  var uf        = new UnionFind(numPoints)
++//The main box intersection routine
++function boxIntersectIter(
++  d, visit, initFull,
++  xSize, xBoxes, xIndex,
++  ySize, yBoxes, yIndex) {
+ 
+-  //Compute rational bounds
+-  var bounds = floatBounds
+-  for(var i=0; i<ratPoints.length; ++i) {
+-    var p = ratPoints[i]
+-    var xb = boundRat(p[0])
+-    var yb = boundRat(p[1])
+-    bounds.push([ xb[0], yb[0], xb[1], yb[1] ])
+-    floatPoints.push([ ratToFloat(p[0]), ratToFloat(p[1]) ])
+-  }
++  //Reserve memory for stack
++  iterInit(d, xSize + ySize)
+ 
+-  //Link all points with over lapping boxes
+-  boxIntersect(bounds, function(i, j) {
+-    uf.link(i, j)
+-  })
++  var top  = 0
++  var elemSize = 2 * d
++  var retval
+ 
+-  //Call find on each point to get a relabeling
+-  var ptr = 0
+-  var noDupes = true
+-  var labels = new Array(numPoints)
+-  for(var i=0; i<numPoints; ++i) {
+-    var j = uf.find(i)
+-    if(j === i) {
+-      //If not a duplicate, then don't bother
+-      labels[i] = ptr
+-      floatPoints[ptr++] = floatPoints[i]
+-    } else {
+-      //Clear no-dupes flag, zero out label
+-      noDupes = false
+-      labels[i] = -1
+-    }
++  iterPush(top++,
++      0,
++      0, xSize,
++      0, ySize,
++      initFull ? 16 : 0, 
++      -Infinity, Infinity)
++  if(!initFull) {
++    iterPush(top++,
++      0,
++      0, ySize,
++      0, xSize,
++      1, 
++      -Infinity, Infinity)
+   }
+-  floatPoints.length = ptr
+ 
+-  //If no duplicates, return null to signal termination
+-  if(noDupes) {
+-    return null
+-  }
++  while(top > 0) {
++    top  -= 1
+ 
+-  //Do a second pass to fix up missing labels
+-  for(var i=0; i<numPoints; ++i) {
+-    if(labels[i] < 0) {
+-      labels[i] = labels[uf.find(i)]
+-    }
+-  }
++    var iptr = top * IFRAME_SIZE
++    var axis      = BOX_ISTACK[iptr]
++    var redStart  = BOX_ISTACK[iptr+1]
++    var redEnd    = BOX_ISTACK[iptr+2]
++    var blueStart = BOX_ISTACK[iptr+3]
++    var blueEnd   = BOX_ISTACK[iptr+4]
++    var state     = BOX_ISTACK[iptr+5]
+ 
+-  //Return resulting union-find data structure
+-  return labels
+-}
++    var dptr = top * DFRAME_SIZE
++    var lo        = BOX_DSTACK[dptr]
++    var hi        = BOX_DSTACK[dptr+1]
+ 
+-function compareLex2(a,b) { return (a[0]-b[0]) || (a[1]-b[1]) }
+-function compareLex3(a,b) {
+-  var d = (a[0] - b[0]) || (a[1] - b[1])
+-  if(d) {
+-    return d
+-  }
+-  if(a[2] < b[2]) {
+-    return -1
+-  } else if(a[2] > b[2]) {
+-    return 1
+-  }
+-  return 0
+-}
++    //Unpack state info
++    var flip      = (state & 1)
++    var full      = !!(state & 16)
+ 
+-//Remove duplicate edge labels
+-function dedupEdges(edges, labels, useColor) {
+-  if(edges.length === 0) {
+-    return
+-  }
+-  if(labels) {
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      var a = labels[e[0]]
+-      var b = labels[e[1]]
+-      e[0] = Math.min(a, b)
+-      e[1] = Math.max(a, b)
++    //Unpack indices
++    var red       = xBoxes
++    var redIndex  = xIndex
++    var blue      = yBoxes
++    var blueIndex = yIndex
++    if(flip) {
++      red         = yBoxes
++      redIndex    = yIndex
++      blue        = xBoxes
++      blueIndex   = xIndex
+     }
+-  } else {
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      var a = e[0]
+-      var b = e[1]
+-      e[0] = Math.min(a, b)
+-      e[1] = Math.max(a, b)
++
++    if(state & 2) {
++      redEnd = partitionStartLessThan(
++        d, axis,
++        redStart, redEnd, red, redIndex,
++        hi)
++      if(redStart >= redEnd) {
++        continue
++      }
+     }
+-  }
+-  if(useColor) {
+-    edges.sort(compareLex3)
+-  } else {
+-    edges.sort(compareLex2)
+-  }
+-  var ptr = 1
+-  for(var i=1; i<edges.length; ++i) {
+-    var prev = edges[i-1]
+-    var next = edges[i]
+-    if(next[0] === prev[0] && next[1] === prev[1] &&
+-      (!useColor || next[2] === prev[2])) {
+-      continue
++    if(state & 4) {
++      redStart = partitionEndLessThanEqual(
++        d, axis,
++        redStart, redEnd, red, redIndex,
++        lo)
++      if(redStart >= redEnd) {
++        continue
++      }
+     }
+-    edges[ptr++] = next
+-  }
+-  edges.length = ptr
+-}
+-
+-//Repeat until convergence
+-function snapRound(points, edges, useColor) {
+-
+-  // 1. find edge crossings
+-  var edgeBounds = boundEdges(points, edges)
+-  var crossings  = getCrossings(points, edges, edgeBounds)
+-
+-  // 2. find t-junctions
+-  var vertBounds = boundPoints(points)
+-  var tjunctions = getTJunctions(points, edges, edgeBounds, vertBounds)
++    
++    var redCount  = redEnd  - redStart
++    var blueCount = blueEnd - blueStart
+ 
+-  // 3. cut edges, construct rational points
+-  var ratPoints  = cutEdges(points, edges, crossings, tjunctions, useColor)
++    if(full) {
++      if(d * redCount * (redCount + blueCount) < SCAN_COMPLETE_CUTOFF) {
++        retval = sweep.scanComplete(
++          d, axis, visit, 
++          redStart, redEnd, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      }
++    } else {
++      if(d * Math.min(redCount, blueCount) < BRUTE_FORCE_CUTOFF) {
++        //If input small, then use brute force
++        retval = bruteForcePartial(
++            d, axis, visit, flip,
++            redStart,  redEnd,  red,  redIndex,
++            blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      } else if(d * redCount * blueCount < SCAN_CUTOFF) {
++        //If input medium sized, then use sweep and prune
++        retval = sweep.scanBipartite(
++          d, axis, visit, flip, 
++          redStart, redEnd, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      }
++    }
++    
++    //First, find all red intervals whose interior contains (lo,hi)
++    var red0 = partitionInteriorContainsInterval(
++      d, axis, 
++      redStart, redEnd, red, redIndex,
++      lo, hi)
+ 
+-  // 4. dedupe verts
+-  var labels     = dedupPoints(points, ratPoints, vertBounds)
++    //Lower dimensional case
++    if(redStart < red0) {
+ 
+-  // 6. dedupe edges
+-  dedupEdges(edges, labels, useColor)
++      if(d * (red0 - redStart) < BRUTE_FORCE_CUTOFF) {
++        //Special case for small inputs: use brute force
++        retval = bruteForceFull(
++          d, axis+1, visit,
++          redStart, red0, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++      } else if(axis === d-2) {
++        if(flip) {
++          retval = sweep.sweepBipartite(
++            d, visit,
++            blueStart, blueEnd, blue, blueIndex,
++            redStart, red0, red, redIndex)
++        } else {
++          retval = sweep.sweepBipartite(
++            d, visit,
++            redStart, red0, red, redIndex,
++            blueStart, blueEnd, blue, blueIndex)
++        }
++        if(retval !== void 0) {
++          return retval
++        }
++      } else {
++        iterPush(top++,
++          axis+1,
++          redStart, red0,
++          blueStart, blueEnd,
++          flip,
++          -Infinity, Infinity)
++        iterPush(top++,
++          axis+1,
++          blueStart, blueEnd,
++          redStart, red0,
++          flip^1,
++          -Infinity, Infinity)
++      }
++    }
+ 
+-  // 5. check termination
+-  if(!labels) {
+-    return (crossings.length > 0 || tjunctions.length > 0)
+-  }
++    //Divide and conquer phase
++    if(red0 < redEnd) {
+ 
+-  // More iterations necessary
+-  return true
+-}
++      //Cut blue into 3 parts:
++      //
++      //  Points < mid point
++      //  Points = mid point
++      //  Points > mid point
++      //
++      var blue0 = findMedian(
++        d, axis, 
++        blueStart, blueEnd, blue, blueIndex)
++      var mid = blue[elemSize * blue0 + axis]
++      var blue1 = partitionStartEqual(
++        d, axis,
++        blue0, blueEnd, blue, blueIndex,
++        mid)
+ 
+-//Main loop, runs PSLG clean up until completion
+-function cleanPSLG(points, edges, colors) {
+-  var modified = false
++      //Right case
++      if(blue1 < blueEnd) {
++        iterPush(top++,
++          axis,
++          red0, redEnd,
++          blue1, blueEnd,
++          (flip|4) + (full ? 16 : 0),
++          mid, hi)
++      }
+ 
+-  //If using colors, augment edges with color data
+-  var prevEdges
+-  if(colors) {
+-    prevEdges = edges
+-    var augEdges = new Array(edges.length)
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      augEdges[i] = [e[0], e[1], colors[i]]
+-    }
+-    edges = augEdges
+-  }
++      //Left case
++      if(blueStart < blue0) {
++        iterPush(top++,
++          axis,
++          red0, redEnd,
++          blueStart, blue0,
++          (flip|2) + (full ? 16 : 0),
++          lo, mid)
++      }
+ 
+-  //Run snap rounding until convergence
+-  while(snapRound(points, edges, !!colors)) {
+-    modified = true
+-  }
++      //Center case (the hard part)
++      if(blue0 + 1 === blue1) {
++        //Optimization: Range with exactly 1 point, use a brute force scan
++        if(full) {
++          retval = onePointFull(
++            d, axis, visit,
++            red0, redEnd, red, redIndex,
++            blue0, blue, blueIndex[blue0])
++        } else {
++          retval = onePointPartial(
++            d, axis, visit, flip,
++            red0, redEnd, red, redIndex,
++            blue0, blue, blueIndex[blue0])
++        }
++        if(retval !== void 0) {
++          return retval
++        }
++      } else if(blue0 < blue1) {
++        var red1
++        if(full) {
++          //If full intersection, need to handle special case
++          red1 = partitionContainsPoint(
++            d, axis,
++            red0, redEnd, red, redIndex,
++            mid)
++          if(red0 < red1) {
++            var redX = partitionStartEqual(
++              d, axis,
++              red0, red1, red, redIndex,
++              mid)
++            if(axis === d-2) {
++              //Degenerate sweep intersection:
++              //  [red0, redX] with [blue0, blue1]
++              if(red0 < redX) {
++                retval = sweep.sweepComplete(
++                  d, visit,
++                  red0, redX, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++                if(retval !== void 0) {
++                  return retval
++                }
++              }
+ 
+-  //Strip color tags
+-  if(!!colors && modified) {
+-    prevEdges.length = 0
+-    colors.length = 0
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      prevEdges.push([e[0], e[1]])
+-      colors.push(e[2])
++              //Normal sweep intersection:
++              //  [redX, red1] with [blue0, blue1]
++              if(redX < red1) {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  redX, red1, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++                if(retval !== void 0) {
++                  return retval
++                }
++              }
++            } else {
++              if(red0 < redX) {
++                iterPush(top++,
++                  axis+1,
++                  red0, redX,
++                  blue0, blue1,
++                  16,
++                  -Infinity, Infinity)
++              }
++              if(redX < red1) {
++                iterPush(top++,
++                  axis+1,
++                  redX, red1,
++                  blue0, blue1,
++                  0,
++                  -Infinity, Infinity)
++                iterPush(top++,
++                  axis+1,
++                  blue0, blue1,
++                  redX, red1,
++                  1,
++                  -Infinity, Infinity)
++              }
++            }
++          }
++        } else {
++          if(flip) {
++            red1 = partitionContainsPointProper(
++              d, axis,
++              red0, redEnd, red, redIndex,
++              mid)
++          } else {
++            red1 = partitionContainsPoint(
++              d, axis,
++              red0, redEnd, red, redIndex,
++              mid)
++          }
++          if(red0 < red1) {
++            if(axis === d-2) {
++              if(flip) {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  blue0, blue1, blue, blueIndex,
++                  red0, red1, red, redIndex)
++              } else {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  red0, red1, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++              }
++            } else {
++              iterPush(top++,
++                axis+1,
++                red0, red1,
++                blue0, blue1,
++                flip,
++                -Infinity, Infinity)
++              iterPush(top++,
++                axis+1,
++                blue0, blue1,
++                red0, red1,
++                flip^1,
++                -Infinity, Infinity)
++            }
++          }
++        }
++      }
+     }
+   }
+-
+-  return modified
+ }
+-
+-},{"./lib/rat-seg-intersect":24,"big-rat":28,"big-rat/cmp":26,"big-rat/to-float":41,"box-intersect":42,"compare-cell":57,"nextafter":50,"rat-vec":52,"robust-segment-intersect":55,"union-find":56}],24:[function(require,module,exports){
++},{"./brute":31,"./median":33,"./partition":34,"./sweep":36,"bit-twiddle":28,"typedarray-pool":162}],33:[function(require,module,exports){
+ 'use strict'
+ 
+-//TODO: Move this to a separate module
+-
+-module.exports = solveIntersection
+-
+-var ratMul = require('big-rat/mul')
+-var ratDiv = require('big-rat/div')
+-var ratSub = require('big-rat/sub')
+-var ratSign = require('big-rat/sign')
+-var rvSub = require('rat-vec/sub')
+-var rvAdd = require('rat-vec/add')
+-var rvMuls = require('rat-vec/muls')
+-
+-var toFloat = require('big-rat/to-float')
+-
+-function ratPerp(a, b) {
+-  return ratSub(ratMul(a[0], b[1]), ratMul(a[1], b[0]))
+-}
++module.exports = findMedian
+ 
+-//Solve for intersection
+-//  x = a + t (b-a)
+-//  (x - c) ^ (d-c) = 0
+-//  (t * (b-a) + (a-c) ) ^ (d-c) = 0
+-//  t * (b-a)^(d-c) = (d-c)^(a-c)
+-//  t = (d-c)^(a-c) / (b-a)^(d-c)
++var genPartition = require('./partition')
+ 
+-function solveIntersection(a, b, c, d) {
+-  var ba = rvSub(b, a)
+-  var dc = rvSub(d, c)
++var partitionStartLessThan = genPartition('lo<p0', ['p0'])
+ 
+-  var baXdc = ratPerp(ba, dc)
++var PARTITION_THRESHOLD = 8   //Cut off for using insertion sort in findMedian
+ 
+-  if(ratSign(baXdc) === 0) {
+-    return null
++//Base case for median finding:  Use insertion sort
++function insertionSort(d, axis, start, end, boxes, ids) {
++  var elemSize = 2 * d
++  var boxPtr = elemSize * (start+1) + axis
++  for(var i=start+1; i<end; ++i, boxPtr+=elemSize) {
++    var x = boxes[boxPtr]
++    for(var j=i, ptr=elemSize*(i-1); 
++        j>start && boxes[ptr+axis] > x; 
++        --j, ptr-=elemSize) {
++      //Swap
++      var aPtr = ptr
++      var bPtr = ptr+elemSize
++      for(var k=0; k<elemSize; ++k, ++aPtr, ++bPtr) {
++        var y = boxes[aPtr]
++        boxes[aPtr] = boxes[bPtr]
++        boxes[bPtr] = y
++      }
++      var tmp = ids[j]
++      ids[j] = ids[j-1]
++      ids[j-1] = tmp
++    }
+   }
+-
+-  var ac = rvSub(a, c)
+-  var dcXac = ratPerp(dc, ac)
+-
+-  var t = ratDiv(dcXac, baXdc)
+-
+-  return rvAdd(a, rvMuls(ba, t))
+ }
+ 
+-},{"big-rat/div":27,"big-rat/mul":37,"big-rat/sign":39,"big-rat/sub":40,"big-rat/to-float":41,"rat-vec/add":51,"rat-vec/muls":53,"rat-vec/sub":54}],25:[function(require,module,exports){
+-'use strict'
+-
+-var rationalize = require('./lib/rationalize')
+-
+-module.exports = add
++//Find median using quick select algorithm
++//  takes O(n) time with high probability
++function findMedian(d, axis, start, end, boxes, ids) {
++  if(end <= start+1) {
++    return start
++  }
+ 
+-function add(a, b) {
+-  return rationalize(
+-    a[0].mul(b[1]).add(b[0].mul(a[1])),
+-    a[1].mul(b[1]))
+-}
++  var lo       = start
++  var hi       = end
++  var mid      = ((end + start) >>> 1)
++  var elemSize = 2*d
++  var pivot    = mid
++  var value    = boxes[elemSize*mid+axis]
++  
++  while(lo < hi) {
++    if(hi - lo < PARTITION_THRESHOLD) {
++      insertionSort(d, axis, lo, hi, boxes, ids)
++      value = boxes[elemSize*mid+axis]
++      break
++    }
++    
++    //Select pivot using median-of-3
++    var count  = hi - lo
++    var pivot0 = (Math.random()*count+lo)|0
++    var value0 = boxes[elemSize*pivot0 + axis]
++    var pivot1 = (Math.random()*count+lo)|0
++    var value1 = boxes[elemSize*pivot1 + axis]
++    var pivot2 = (Math.random()*count+lo)|0
++    var value2 = boxes[elemSize*pivot2 + axis]
++    if(value0 <= value1) {
++      if(value2 >= value1) {
++        pivot = pivot1
++        value = value1
++      } else if(value0 >= value2) {
++        pivot = pivot0
++        value = value0
++      } else {
++        pivot = pivot2
++        value = value2
++      }
++    } else {
++      if(value1 >= value2) {
++        pivot = pivot1
++        value = value1
++      } else if(value2 >= value0) {
++        pivot = pivot0
++        value = value0
++      } else {
++        pivot = pivot2
++        value = value2
++      }
++    }
+ 
+-},{"./lib/rationalize":35}],26:[function(require,module,exports){
+-'use strict'
++    //Swap pivot to end of array
++    var aPtr = elemSize * (hi-1)
++    var bPtr = elemSize * pivot
++    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
++      var x = boxes[aPtr]
++      boxes[aPtr] = boxes[bPtr]
++      boxes[bPtr] = x
++    }
++    var y = ids[hi-1]
++    ids[hi-1] = ids[pivot]
++    ids[pivot] = y
+ 
+-module.exports = cmp
++    //Partition using pivot
++    pivot = partitionStartLessThan(
++      d, axis, 
++      lo, hi-1, boxes, ids,
++      value)
+ 
+-function cmp(a, b) {
+-    return a[0].mul(b[1]).cmp(b[0].mul(a[1]))
+-}
++    //Swap pivot back
++    var aPtr = elemSize * (hi-1)
++    var bPtr = elemSize * pivot
++    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
++      var x = boxes[aPtr]
++      boxes[aPtr] = boxes[bPtr]
++      boxes[bPtr] = x
++    }
++    var y = ids[hi-1]
++    ids[hi-1] = ids[pivot]
++    ids[pivot] = y
+ 
+-},{}],27:[function(require,module,exports){
+-'use strict'
+-
+-var rationalize = require('./lib/rationalize')
+-
+-module.exports = div
++    //Swap pivot to last pivot
++    if(mid < pivot) {
++      hi = pivot-1
++      while(lo < hi && 
++        boxes[elemSize*(hi-1)+axis] === value) {
++        hi -= 1
++      }
++      hi += 1
++    } else if(pivot < mid) {
++      lo = pivot + 1
++      while(lo < hi &&
++        boxes[elemSize*lo+axis] === value) {
++        lo += 1
++      }
++    } else {
++      break
++    }
++  }
+ 
+-function div(a, b) {
+-  return rationalize(a[0].mul(b[1]), a[1].mul(b[0]))
++  //Make sure pivot is at start
++  return partitionStartLessThan(
++    d, axis, 
++    start, mid, boxes, ids,
++    boxes[elemSize*mid+axis])
+ }
+-
+-},{"./lib/rationalize":35}],28:[function(require,module,exports){
++},{"./partition":34}],34:[function(require,module,exports){
+ 'use strict'
+ 
+-var isRat = require('./is-rat')
+-var isBN = require('./lib/is-bn')
+-var num2bn = require('./lib/num-to-bn')
+-var str2bn = require('./lib/str-to-bn')
+-var rationalize = require('./lib/rationalize')
+-var div = require('./div')
++module.exports = genPartition
+ 
+-module.exports = makeRational
++var code = 'for(var j=2*a,k=j*c,l=k,m=c,n=b,o=a+b,p=c;d>p;++p,k+=j){var _;if($)if(m===p)m+=1,l+=j;else{for(var s=0;j>s;++s){var t=e[k+s];e[k+s]=e[l],e[l++]=t}var u=f[p];f[p]=f[m],f[m++]=u}}return m'
+ 
+-function makeRational(numer, denom) {
+-  if(isRat(numer)) {
+-    if(denom) {
+-      return div(numer, makeRational(denom))
+-    }
+-    return [numer[0].clone(), numer[1].clone()]
+-  }
+-  var shift = 0
+-  var a, b
+-  if(isBN(numer)) {
+-    a = numer.clone()
+-  } else if(typeof numer === 'string') {
+-    a = str2bn(numer)
+-  } else if(numer === 0) {
+-    return [num2bn(0), num2bn(1)]
+-  } else if(numer === Math.floor(numer)) {
+-    a = num2bn(numer)
+-  } else {
+-    while(numer !== Math.floor(numer)) {
+-      numer = numer * Math.pow(2, 256)
+-      shift -= 256
+-    }
+-    a = num2bn(numer)
+-  }
+-  if(isRat(denom)) {
+-    a.mul(denom[1])
+-    b = denom[0].clone()
+-  } else if(isBN(denom)) {
+-    b = denom.clone()
+-  } else if(typeof denom === 'string') {
+-    b = str2bn(denom)
+-  } else if(!denom) {
+-    b = num2bn(1)
+-  } else if(denom === Math.floor(denom)) {
+-    b = num2bn(denom)
+-  } else {
+-    while(denom !== Math.floor(denom)) {
+-      denom = denom * Math.pow(2, 256)
+-      shift += 256
+-    }
+-    b = num2bn(denom)
++function genPartition(predicate, args) {
++  var fargs ='abcdef'.split('').concat(args)
++  var reads = []
++  if(predicate.indexOf('lo') >= 0) {
++    reads.push('lo=e[k+n]')
+   }
+-  if(shift > 0) {
+-    a = a.shln(shift)
+-  } else if(shift < 0) {
+-    b = b.shln(-shift)
++  if(predicate.indexOf('hi') >= 0) {
++    reads.push('hi=e[k+o]')
+   }
+-  return rationalize(a, b)
++  fargs.push(
++    code.replace('_', reads.join())
++        .replace('$', predicate))
++  return Function.apply(void 0, fargs)
+ }
++},{}],35:[function(require,module,exports){
++'use strict';
+ 
+-},{"./div":27,"./is-rat":29,"./lib/is-bn":33,"./lib/num-to-bn":34,"./lib/rationalize":35,"./lib/str-to-bn":36}],29:[function(require,module,exports){
+-'use strict'
++//This code is extracted from ndarray-sort
++//It is inlined here as a temporary workaround
+ 
+-var isBN = require('./lib/is-bn')
++module.exports = wrapper;
+ 
+-module.exports = isRat
++var INSERT_SORT_CUTOFF = 32
+ 
+-function isRat(x) {
+-  return Array.isArray(x) && x.length === 2 && isBN(x[0]) && isBN(x[1])
++function wrapper(data, n0) {
++  if (n0 <= 4*INSERT_SORT_CUTOFF) {
++    insertionSort(0, n0 - 1, data);
++  } else {
++    quickSort(0, n0 - 1, data);
++  }
+ }
+ 
+-},{"./lib/is-bn":33}],30:[function(require,module,exports){
+-'use strict'
++function insertionSort(left, right, data) {
++  var ptr = 2*(left+1)
++  for(var i=left+1; i<=right; ++i) {
++    var a = data[ptr++]
++    var b = data[ptr++]
++    var j = i
++    var jptr = ptr-2
++    while(j-- > left) {
++      var x = data[jptr-2]
++      var y = data[jptr-1]
++      if(x < a) {
++        break
++      } else if(x === a && y < b) {
++        break
++      }
++      data[jptr]   = x
++      data[jptr+1] = y
++      jptr -= 2
++    }
++    data[jptr]   = a
++    data[jptr+1] = b
++  }
++}
+ 
+-var bn = require('bn.js')
++function swap(i, j, data) {
++  i *= 2
++  j *= 2
++  var x = data[i]
++  var y = data[i+1]
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++  data[j] = x
++  data[j+1] = y
++}
+ 
+-module.exports = sign
++function move(i, j, data) {
++  i *= 2
++  j *= 2
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++}
+ 
+-function sign(x) {
+-  return x.cmp(new bn(0))
++function rotate(i, j, k, data) {
++  i *= 2
++  j *= 2
++  k *= 2
++  var x = data[i]
++  var y = data[i+1]
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++  data[j] = data[k]
++  data[j+1] = data[k+1]
++  data[k] = x
++  data[k+1] = y
+ }
+ 
+-},{"bn.js":38}],31:[function(require,module,exports){
+-'use strict'
++function shufflePivot(i, j, px, py, data) {
++  i *= 2
++  j *= 2
++  data[i] = data[j]
++  data[j] = px
++  data[i+1] = data[j+1]
++  data[j+1] = py
++}
+ 
+-module.exports = bn2num
++function compare(i, j, data) {
++  i *= 2
++  j *= 2
++  var x = data[i],
++      y = data[j]
++  if(x < y) {
++    return false
++  } else if(x === y) {
++    return data[i+1] > data[j+1]
++  }
++  return true
++}
+ 
+-//TODO: Make this better
+-function bn2num(b) {
+-  var l = b.length
+-  var words = b.words
+-  var out = 0
+-  if (l === 1) {
+-    out = words[0]
+-  } else if (l === 2) {
+-    out = words[0] + (words[1] * 0x4000000)
+-  } else {
+-    var out = 0
+-    for (var i = 0; i < l; i++) {
+-      var w = words[i]
+-      out += w * Math.pow(0x4000000, i)
+-    }
++function comparePivot(i, y, b, data) {
++  i *= 2
++  var x = data[i]
++  if(x < y) {
++    return true
++  } else if(x === y) {
++    return data[i+1] < b
+   }
+-  return b.sign ? -out : out
++  return false
+ }
+ 
+-},{}],32:[function(require,module,exports){
+-'use strict'
++function quickSort(left, right, data) {
++  var sixth = (right - left + 1) / 6 | 0, 
++      index1 = left + sixth, 
++      index5 = right - sixth, 
++      index3 = left + right >> 1, 
++      index2 = index3 - sixth, 
++      index4 = index3 + sixth, 
++      el1 = index1, 
++      el2 = index2, 
++      el3 = index3, 
++      el4 = index4, 
++      el5 = index5, 
++      less = left + 1, 
++      great = right - 1, 
++      tmp = 0
++  if(compare(el1, el2, data)) {
++    tmp = el1
++    el1 = el2
++    el2 = tmp
++  }
++  if(compare(el4, el5, data)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
++  }
++  if(compare(el1, el3, data)) {
++    tmp = el1
++    el1 = el3
++    el3 = tmp
++  }
++  if(compare(el2, el3, data)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el1, el4, data)) {
++    tmp = el1
++    el1 = el4
++    el4 = tmp
++  }
++  if(compare(el3, el4, data)) {
++    tmp = el3
++    el3 = el4
++    el4 = tmp
++  }
++  if(compare(el2, el5, data)) {
++    tmp = el2
++    el2 = el5
++    el5 = tmp
++  }
++  if(compare(el2, el3, data)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el4, el5, data)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
++  }
+ 
+-var db = require('double-bits')
+-var ctz = require('bit-twiddle').countTrailingZeros
++  var pivot1X = data[2*el2]
++  var pivot1Y = data[2*el2+1]
++  var pivot2X = data[2*el4]
++  var pivot2Y = data[2*el4+1]
+ 
+-module.exports = ctzNumber
++  var ptr0 = 2 * el1;
++  var ptr2 = 2 * el3;
++  var ptr4 = 2 * el5;
++  var ptr5 = 2 * index1;
++  var ptr6 = 2 * index3;
++  var ptr7 = 2 * index5;
++  for (var i1 = 0; i1 < 2; ++i1) {
++    var x = data[ptr0+i1];
++    var y = data[ptr2+i1];
++    var z = data[ptr4+i1];
++    data[ptr5+i1] = x;
++    data[ptr6+i1] = y;
++    data[ptr7+i1] = z;
++  }
+ 
+-//Counts the number of trailing zeros
+-function ctzNumber(x) {
+-  var l = ctz(db.lo(x))
+-  if(l < 32) {
+-    return l
++  move(index2, left, data)
++  move(index4, right, data)
++  for (var k = less; k <= great; ++k) {
++    if (comparePivot(k, pivot1X, pivot1Y, data)) {
++      if (k !== less) {
++        swap(k, less, data)
++      }
++      ++less;
++    } else {
++      if (!comparePivot(k, pivot2X, pivot2Y, data)) {
++        while (true) {
++          if (!comparePivot(great, pivot2X, pivot2Y, data)) {
++            if (--great < k) {
++              break;
++            }
++            continue;
++          } else {
++            if (comparePivot(great, pivot1X, pivot1Y, data)) {
++              rotate(k, less, great, data)
++              ++less;
++              --great;
++            } else {
++              swap(k, great, data)
++              --great;
++            }
++            break;
++          }
++        }
++      }
++    }
+   }
+-  var h = ctz(db.hi(x))
+-  if(h > 20) {
+-    return 52
++  shufflePivot(left, less-1, pivot1X, pivot1Y, data)
++  shufflePivot(right, great+1, pivot2X, pivot2Y, data)
++  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
++    insertionSort(left, less - 2, data);
++  } else {
++    quickSort(left, less - 2, data);
++  }
++  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
++    insertionSort(great + 2, right, data);
++  } else {
++    quickSort(great + 2, right, data);
++  }
++  if (great - less <= INSERT_SORT_CUTOFF) {
++    insertionSort(less, great, data);
++  } else {
++    quickSort(less, great, data);
+   }
+-  return h + 32
+ }
+-
+-},{"bit-twiddle":9,"double-bits":49}],33:[function(require,module,exports){
++},{}],36:[function(require,module,exports){
+ 'use strict'
+ 
+-var BN = require('bn.js')
+-
+-module.exports = isBN
+-
+-//Test if x is a bignumber
+-//FIXME: obviously this is the wrong way to do it
+-function isBN(x) {
+-  return x && typeof x === 'object' && Boolean(x.words)
++module.exports = {
++  init:           sqInit,
++  sweepBipartite: sweepBipartite,
++  sweepComplete:  sweepComplete,
++  scanBipartite:  scanBipartite,
++  scanComplete:   scanComplete
+ }
+ 
+-},{"bn.js":38}],34:[function(require,module,exports){
+-'use strict'
++var pool  = require('typedarray-pool')
++var bits  = require('bit-twiddle')
++var isort = require('./sort')
+ 
+-var BN = require('bn.js')
+-var db = require('double-bits')
++//Flag for blue
++var BLUE_FLAG = (1<<28)
+ 
+-module.exports = num2bn
++//1D sweep event queue stuff (use pool to save space)
++var INIT_CAPACITY      = 1024
++var RED_SWEEP_QUEUE    = pool.mallocInt32(INIT_CAPACITY)
++var RED_SWEEP_INDEX    = pool.mallocInt32(INIT_CAPACITY)
++var BLUE_SWEEP_QUEUE   = pool.mallocInt32(INIT_CAPACITY)
++var BLUE_SWEEP_INDEX   = pool.mallocInt32(INIT_CAPACITY)
++var COMMON_SWEEP_QUEUE = pool.mallocInt32(INIT_CAPACITY)
++var COMMON_SWEEP_INDEX = pool.mallocInt32(INIT_CAPACITY)
++var SWEEP_EVENTS       = pool.mallocDouble(INIT_CAPACITY * 8)
+ 
+-function num2bn(x) {
+-  var e = db.exponent(x)
+-  if(e < 52) {
+-    return new BN(x)
+-  } else {
+-    return (new BN(x * Math.pow(2, 52-e))).shln(e-52)
++//Reserves memory for the 1D sweep data structures
++function sqInit(count) {
++  var rcount = bits.nextPow2(count)
++  if(RED_SWEEP_QUEUE.length < rcount) {
++    pool.free(RED_SWEEP_QUEUE)
++    RED_SWEEP_QUEUE = pool.mallocInt32(rcount)
+   }
+-}
+-
+-},{"bn.js":38,"double-bits":49}],35:[function(require,module,exports){
+-'use strict'
+-
+-var num2bn = require('./num-to-bn')
+-var sign = require('./bn-sign')
+-
+-module.exports = rationalize
+-
+-function rationalize(numer, denom) {
+-  var snumer = sign(numer)
+-  var sdenom = sign(denom)
+-  if(snumer === 0) {
+-    return [num2bn(0), num2bn(1)]
++  if(RED_SWEEP_INDEX.length < rcount) {
++    pool.free(RED_SWEEP_INDEX)
++    RED_SWEEP_INDEX = pool.mallocInt32(rcount)
+   }
+-  if(sdenom === 0) {
+-    return [num2bn(0), num2bn(0)]
++  if(BLUE_SWEEP_QUEUE.length < rcount) {
++    pool.free(BLUE_SWEEP_QUEUE)
++    BLUE_SWEEP_QUEUE = pool.mallocInt32(rcount)
+   }
+-  if(sdenom < 0) {
+-    numer = numer.neg()
+-    denom = denom.neg()
++  if(BLUE_SWEEP_INDEX.length < rcount) {
++    pool.free(BLUE_SWEEP_INDEX)
++    BLUE_SWEEP_INDEX = pool.mallocInt32(rcount)
+   }
+-  var d = numer.gcd(denom)
+-  if(d.cmpn(1)) {
+-    return [ numer.div(d), denom.div(d) ]
++  if(COMMON_SWEEP_QUEUE.length < rcount) {
++    pool.free(COMMON_SWEEP_QUEUE)
++    COMMON_SWEEP_QUEUE = pool.mallocInt32(rcount)
++  }
++  if(COMMON_SWEEP_INDEX.length < rcount) {
++    pool.free(COMMON_SWEEP_INDEX)
++    COMMON_SWEEP_INDEX = pool.mallocInt32(rcount)
++  }
++  var eventLength = 8 * rcount
++  if(SWEEP_EVENTS.length < eventLength) {
++    pool.free(SWEEP_EVENTS)
++    SWEEP_EVENTS = pool.mallocDouble(eventLength)
+   }
+-  return [ numer, denom ]
+ }
+ 
+-},{"./bn-sign":30,"./num-to-bn":34}],36:[function(require,module,exports){
+-'use strict'
+-
+-var BN = require('bn.js')
+-
+-module.exports = str2BN
+-
+-function str2BN(x) {
+-  return new BN(x)
++//Remove an item from the active queue in O(1)
++function sqPop(queue, index, count, item) {
++  var idx = index[item]
++  var top = queue[count-1]
++  queue[idx] = top
++  index[top] = idx
+ }
+ 
+-},{"bn.js":38}],37:[function(require,module,exports){
+-'use strict'
+-
+-var rationalize = require('./lib/rationalize')
+-
+-module.exports = mul
+-
+-function mul(a, b) {
+-  return rationalize(a[0].mul(b[0]), a[1].mul(b[1]))
++//Insert an item into the active queue in O(1)
++function sqPush(queue, index, count, item) {
++  queue[count] = item
++  index[item]  = count
+ }
+ 
+-},{"./lib/rationalize":35}],38:[function(require,module,exports){
+-(function (module, exports) {
++//Recursion base case: use 1D sweep algorithm
++function sweepBipartite(
++    d, visit,
++    redStart,  redEnd, red, redIndex,
++    blueStart, blueEnd, blue, blueIndex) {
+ 
+-'use strict';
++  //store events as pairs [coordinate, idx]
++  //
++  //  red create:  -(idx+1)
++  //  red destroy: idx
++  //  blue create: -(idx+BLUE_FLAG)
++  //  blue destroy: idx+BLUE_FLAG
++  //
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = d-1
++  var iend     = elemSize-1
+ 
+-// Utils
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = redIndex[i]
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -(idx+1)
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
++  }
+ 
+-function assert(val, msg) {
+-  if (!val)
+-    throw new Error(msg || 'Assertion failed');
+-}
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = blueIndex[i]+BLUE_FLAG
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
++  }
+ 
+-// Could use `inherits` module, but don't want to move from single file
+-// architecture yet.
+-function inherits(ctor, superCtor) {
+-  ctor.super_ = superCtor;
+-  var TempCtor = function () {};
+-  TempCtor.prototype = superCtor.prototype;
+-  ctor.prototype = new TempCtor();
+-  ctor.prototype.constructor = ctor;
+-}
+-
+-// BN
+-
+-function BN(number, base, endian) {
+-  // May be `new BN(bn)` ?
+-  if (number !== null &&
+-      typeof number === 'object' &&
+-      Array.isArray(number.words)) {
+-    return number;
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive  = 0
++  var blueActive = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e >= BLUE_FLAG) {
++      //blue destroy event
++      e = (e-BLUE_FLAG)|0
++      sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, e)
++    } else if(e >= 0) {
++      //red destroy event
++      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e)
++    } else if(e <= -BLUE_FLAG) {
++      //blue create event
++      e = (-e-BLUE_FLAG)|0
++      for(var j=0; j<redActive; ++j) {
++        var retval = visit(RED_SWEEP_QUEUE[j], e)
++        if(retval !== void 0) {
++          return retval
++        }
++      }
++      sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, e)
++    } else {
++      //red create event
++      e = (-e-1)|0
++      for(var j=0; j<blueActive; ++j) {
++        var retval = visit(e, BLUE_SWEEP_QUEUE[j])
++        if(retval !== void 0) {
++          return retval
++        }
++      }
++      sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, e)
++    }
+   }
++}
+ 
+-  this.sign = false;
+-  this.words = null;
+-  this.length = 0;
++//Complete sweep
++function sweepComplete(d, visit, 
++  redStart, redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
+ 
+-  // Reduction context
+-  this.red = null;
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = d-1
++  var iend     = elemSize-1
+ 
+-  if (base === 'le' || base === 'be') {
+-    endian = base;
+-    base = 10;
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = (redIndex[i]+1)<<1
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
+   }
+ 
+-  if (number !== null)
+-    this._init(number || 0, base || 10, endian || 'be');
+-}
+-if (typeof module === 'object')
+-  module.exports = BN;
+-else
+-  exports.BN = BN;
+-
+-BN.BN = BN;
+-BN.wordSize = 26;
+-
+-BN.prototype._init = function init(number, base, endian) {
+-  if (typeof number === 'number') {
+-    return this._initNumber(number, base, endian);
+-  } else if (typeof number === 'object') {
+-    return this._initArray(number, base, endian);
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = (blueIndex[i]+1)<<1
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = (-idx)|1
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx|1
+   }
+-  if (base === 'hex')
+-    base = 16;
+-  assert(base === (base | 0) && base >= 2 && base <= 36);
+ 
+-  number = number.toString().replace(/\s+/g, '');
+-  var start = 0;
+-  if (number[0] === '-')
+-    start++;
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  var blueActive   = 0
++  var commonActive = 0
++  for(var i=0; i<n; ++i) {
++    var e     = SWEEP_EVENTS[2*i+1]|0
++    var color = e&1
++    if(i < n-1 && (e>>1) === (SWEEP_EVENTS[2*i+3]>>1)) {
++      color = 2
++      i += 1
++    }
++    
++    if(e < 0) {
++      //Create event
++      var id = -(e>>1) - 1
+ 
+-  if (base === 16)
+-    this._parseHex(number, start);
+-  else
+-    this._parseBase(number, base, start);
++      //Intersect with common
++      for(var j=0; j<commonActive; ++j) {
++        var retval = visit(COMMON_SWEEP_QUEUE[j], id)
++        if(retval !== void 0) {
++          return retval
++        }
++      }
+ 
+-  if (number[0] === '-')
+-    this.sign = true;
++      if(color !== 0) {
++        //Intersect with red
++        for(var j=0; j<redActive; ++j) {
++          var retval = visit(RED_SWEEP_QUEUE[j], id)
++          if(retval !== void 0) {
++            return retval
++          }
++        }
++      }
+ 
+-  this.strip();
++      if(color !== 1) {
++        //Intersect with blue
++        for(var j=0; j<blueActive; ++j) {
++          var retval = visit(BLUE_SWEEP_QUEUE[j], id)
++          if(retval !== void 0) {
++            return retval
++          }
++        }
++      }
+ 
+-  if (endian !== 'le')
+-    return;
++      if(color === 0) {
++        //Red
++        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, id)
++      } else if(color === 1) {
++        //Blue
++        sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, id)
++      } else if(color === 2) {
++        //Both
++        sqPush(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive++, id)
++      }
++    } else {
++      //Destroy event
++      var id = (e>>1) - 1
++      if(color === 0) {
++        //Red
++        sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, id)
++      } else if(color === 1) {
++        //Blue
++        sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, id)
++      } else if(color === 2) {
++        //Both
++        sqPop(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive--, id)
++      }
++    }
++  }
++}
+ 
+-  this._initArray(this.toArray(), base, endian);
+-};
++//Sweep and prune/scanline algorithm:
++//  Scan along axis, detect intersections
++//  Brute force all boxes along axis
++function scanBipartite(
++  d, axis, visit, flip,
++  redStart,  redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
++  
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = axis
++  var iend     = axis+d
+ 
+-BN.prototype._initNumber = function _initNumber(number, base, endian) {
+-  if (number < 0) {
+-    this.sign = true;
+-    number = -number;
+-  }
+-  if (number < 0x4000000) {
+-    this.words = [ number & 0x3ffffff ];
+-    this.length = 1;
+-  } else if (number < 0x10000000000000) {
+-    this.words = [
+-      number & 0x3ffffff,
+-      (number / 0x4000000) & 0x3ffffff
+-    ];
+-    this.length = 2;
++  var redShift  = 1
++  var blueShift = 1
++  if(flip) {
++    blueShift = BLUE_FLAG
+   } else {
+-    assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
+-    this.words = [
+-      number & 0x3ffffff,
+-      (number / 0x4000000) & 0x3ffffff,
+-      1
+-    ];
+-    this.length = 3;
++    redShift  = BLUE_FLAG
+   }
+ 
+-  if (endian !== 'le')
+-    return;
+-
+-  // Reverse the bytes
+-  this._initArray(this.toArray(), base, endian);
+-};
+-
+-BN.prototype._initArray = function _initArray(number, base, endian) {
+-  // Perhaps a Uint8Array
+-  assert(typeof number.length === 'number');
+-  if (number.length <= 0) {
+-    this.words = [ 0 ];
+-    this.length = 1;
+-    return this;
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = i + redShift
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
+   }
+-
+-  this.length = Math.ceil(number.length / 3);
+-  this.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    this.words[i] = 0;
+-
+-  var off = 0;
+-  if (endian === 'be') {
+-    for (var i = number.length - 1, j = 0; i >= 0; i -= 3) {
+-      var w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
+-      this.words[j] |= (w << off) & 0x3ffffff;
+-      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+-      off += 24;
+-      if (off >= 26) {
+-        off -= 26;
+-        j++;
+-      }
+-    }
+-  } else if (endian === 'le') {
+-    for (var i = 0, j = 0; i < number.length; i += 3) {
+-      var w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
+-      this.words[j] |= (w << off) & 0x3ffffff;
+-      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+-      off += 24;
+-      if (off >= 26) {
+-        off -= 26;
+-        j++;
+-      }
+-    }
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = i + blueShift
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
+   }
+-  return this.strip();
+-};
+ 
+-function parseHex(str, start, end) {
+-  var r = 0;
+-  var len = Math.min(str.length, end);
+-  for (var i = start; i < len; i++) {
+-    var c = str.charCodeAt(i) - 48;
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e < 0) {
++      var idx   = -e
++      var isRed = false
++      if(idx >= BLUE_FLAG) {
++        isRed = !flip
++        idx -= BLUE_FLAG 
++      } else {
++        isRed = !!flip
++        idx -= 1
++      }
++      if(isRed) {
++        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, idx)
++      } else {
++        var blueId  = blueIndex[idx]
++        var bluePtr = elemSize * idx
++        
++        var b0 = blue[bluePtr+axis+1]
++        var b1 = blue[bluePtr+axis+1+d]
+ 
+-    r <<= 4;
++red_loop:
++        for(var j=0; j<redActive; ++j) {
++          var oidx   = RED_SWEEP_QUEUE[j]
++          var redPtr = elemSize * oidx
+ 
+-    // 'a' - 'f'
+-    if (c >= 49 && c <= 54)
+-      r |= c - 49 + 0xa;
++          if(b1 < red[redPtr+axis+1] || 
++             red[redPtr+axis+1+d] < b0) {
++            continue
++          }
+ 
+-    // 'A' - 'F'
+-    else if (c >= 17 && c <= 22)
+-      r |= c - 17 + 0xa;
++          for(var k=axis+2; k<d; ++k) {
++            if(blue[bluePtr + k + d] < red[redPtr + k] || 
++               red[redPtr + k + d] < blue[bluePtr + k]) {
++              continue red_loop
++            }
++          }
+ 
+-    // '0' - '9'
+-    else
+-      r |= c & 0xf;
++          var redId  = redIndex[oidx]
++          var retval
++          if(flip) {
++            retval = visit(blueId, redId)
++          } else {
++            retval = visit(redId, blueId)
++          }
++          if(retval !== void 0) {
++            return retval 
++          }
++        }
++      }
++    } else {
++      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e - redShift)
++    }
+   }
+-  return r;
+ }
+ 
+-BN.prototype._parseHex = function _parseHex(number, start) {
+-  // Create possibly bigger array to ensure that it fits the number
+-  this.length = Math.ceil((number.length - start) / 6);
+-  this.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    this.words[i] = 0;
++function scanComplete(
++  d, axis, visit,
++  redStart,  redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
+ 
+-  // Scan 24-bit chunks and add them to the number
+-  var off = 0;
+-  for (var i = number.length - 6, j = 0; i >= start; i -= 6) {
+-    var w = parseHex(number, i, i + 6);
+-    this.words[j] |= (w << off) & 0x3ffffff;
+-    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
+-    off += 24;
+-    if (off >= 26) {
+-      off -= 26;
+-      j++;
+-    }
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = axis
++  var iend     = axis+d
++
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = i + BLUE_FLAG
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
+   }
+-  if (i + 6 !== start) {
+-    var w = parseHex(number, start, i + 6);
+-    this.words[j] |= (w << off) & 0x3ffffff;
+-    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = i + 1
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
+   }
+-  this.strip();
+-};
+ 
+-function parseBase(str, start, end, mul) {
+-  var r = 0;
+-  var len = Math.min(str.length, end);
+-  for (var i = start; i < len; i++) {
+-    var c = str.charCodeAt(i) - 48;
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e < 0) {
++      var idx   = -e
++      if(idx >= BLUE_FLAG) {
++        RED_SWEEP_QUEUE[redActive++] = idx - BLUE_FLAG
++      } else {
++        idx -= 1
++        var blueId  = blueIndex[idx]
++        var bluePtr = elemSize * idx
+ 
+-    r *= mul;
++        var b0 = blue[bluePtr+axis+1]
++        var b1 = blue[bluePtr+axis+1+d]
+ 
+-    // 'a'
+-    if (c >= 49)
+-      r += c - 49 + 0xa;
++red_loop:
++        for(var j=0; j<redActive; ++j) {
++          var oidx   = RED_SWEEP_QUEUE[j]
++          var redId  = redIndex[oidx]
+ 
+-    // 'A'
+-    else if (c >= 17)
+-      r += c - 17 + 0xa;
++          if(redId === blueId) {
++            break
++          }
+ 
+-    // '0' - '9'
+-    else
+-      r += c;
++          var redPtr = elemSize * oidx
++          if(b1 < red[redPtr+axis+1] || 
++            red[redPtr+axis+1+d] < b0) {
++            continue
++          }
++          for(var k=axis+2; k<d; ++k) {
++            if(blue[bluePtr + k + d] < red[redPtr + k] || 
++               red[redPtr + k + d]   < blue[bluePtr + k]) {
++              continue red_loop
++            }
++          }
++
++          var retval = visit(redId, blueId)
++          if(retval !== void 0) {
++            return retval 
++          }
++        }
++      }
++    } else {
++      var idx = e - BLUE_FLAG
++      for(var j=redActive-1; j>=0; --j) {
++        if(RED_SWEEP_QUEUE[j] === idx) {
++          for(var k=j+1; k<redActive; ++k) {
++            RED_SWEEP_QUEUE[k-1] = RED_SWEEP_QUEUE[k]
++          }
++          break
++        }
++      }
++      --redActive
++    }
+   }
+-  return r;
+ }
++},{"./sort":35,"bit-twiddle":28,"typedarray-pool":162}],37:[function(require,module,exports){
++(function (global){
++/*!
++ * The buffer module from node.js, for the browser.
++ *
++ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
++ * @license  MIT
++ */
++/* eslint-disable no-proto */
+ 
+-BN.prototype._parseBase = function _parseBase(number, base, start) {
+-  // Initialize as zero
+-  this.words = [ 0 ];
+-  this.length = 1;
++'use strict'
+ 
+-  // Find length of limb in base
+-  for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base)
+-    limbLen++;
+-  limbLen--;
+-  limbPow = (limbPow / base) | 0;
++var base64 = require('base64-js')
++var ieee754 = require('ieee754')
++var isArray = require('isarray')
+ 
+-  var total = number.length - start;
+-  var mod = total % limbLen;
+-  var end = Math.min(total, total - mod) + start;
++exports.Buffer = Buffer
++exports.SlowBuffer = SlowBuffer
++exports.INSPECT_MAX_BYTES = 50
+ 
+-  var word = 0;
+-  for (var i = start; i < end; i += limbLen) {
+-    word = parseBase(number, i, i + limbLen, base);
++/**
++ * If `Buffer.TYPED_ARRAY_SUPPORT`:
++ *   === true    Use Uint8Array implementation (fastest)
++ *   === false   Use Object implementation (most compatible, even IE6)
++ *
++ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
++ * Opera 11.6+, iOS 4.2+.
++ *
++ * Due to various browser bugs, sometimes the Object implementation will be used even
++ * when the browser supports typed arrays.
++ *
++ * Note:
++ *
++ *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
++ *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
++ *
++ *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
++ *
++ *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
++ *     incorrect length in some situations.
+ 
+-    this.imuln(limbPow);
+-    if (this.words[0] + word < 0x4000000)
+-      this.words[0] += word;
+-    else
+-      this._iaddn(word);
+-  }
++ * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
++ * get the Object implementation, which is slower but behaves correctly.
++ */
++Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
++  ? global.TYPED_ARRAY_SUPPORT
++  : typedArraySupport()
+ 
+-  if (mod !== 0) {
+-    var pow = 1;
+-    var word = parseBase(number, i, number.length, base);
++/*
++ * Export kMaxLength after typed array support is determined.
++ */
++exports.kMaxLength = kMaxLength()
+ 
+-    for (var i = 0; i < mod; i++)
+-      pow *= base;
+-    this.imuln(pow);
+-    if (this.words[0] + word < 0x4000000)
+-      this.words[0] += word;
+-    else
+-      this._iaddn(word);
++function typedArraySupport () {
++  try {
++    var arr = new Uint8Array(1)
++    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
++    return arr.foo() === 42 && // typed array instances can be augmented
++        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
++        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
++  } catch (e) {
++    return false
+   }
+-};
+-
+-BN.prototype.copy = function copy(dest) {
+-  dest.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    dest.words[i] = this.words[i];
+-  dest.length = this.length;
+-  dest.sign = this.sign;
+-  dest.red = this.red;
+-};
+-
+-BN.prototype.clone = function clone() {
+-  var r = new BN(null);
+-  this.copy(r);
+-  return r;
+-};
++}
+ 
+-// Remove leading `0` from `this`
+-BN.prototype.strip = function strip() {
+-  while (this.length > 1 && this.words[this.length - 1] === 0)
+-    this.length--;
+-  return this._normSign();
+-};
++function kMaxLength () {
++  return Buffer.TYPED_ARRAY_SUPPORT
++    ? 0x7fffffff
++    : 0x3fffffff
++}
+ 
+-BN.prototype._normSign = function _normSign() {
+-  // -0 = 0
+-  if (this.length === 1 && this.words[0] === 0)
+-    this.sign = false;
+-  return this;
+-};
++function createBuffer (that, length) {
++  if (kMaxLength() < length) {
++    throw new RangeError('Invalid typed array length')
++  }
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    // Return an augmented `Uint8Array` instance, for best performance
++    that = new Uint8Array(length)
++    that.__proto__ = Buffer.prototype
++  } else {
++    // Fallback: Return an object instance of the Buffer class
++    if (that === null) {
++      that = new Buffer(length)
++    }
++    that.length = length
++  }
+ 
+-BN.prototype.inspect = function inspect() {
+-  return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
+-};
++  return that
++}
+ 
+-/*
++/**
++ * The Buffer constructor returns instances of `Uint8Array` that have their
++ * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
++ * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
++ * and the `Uint8Array` methods. Square bracket notation works as expected -- it
++ * returns a single octet.
++ *
++ * The `Uint8Array` prototype remains unmodified.
++ */
+ 
+-var zeros = [];
+-var groupSizes = [];
+-var groupBases = [];
++function Buffer (arg, encodingOrOffset, length) {
++  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
++    return new Buffer(arg, encodingOrOffset, length)
++  }
+ 
+-var s = '';
+-var i = -1;
+-while (++i < BN.wordSize) {
+-  zeros[i] = s;
+-  s += '0';
+-}
+-groupSizes[0] = 0;
+-groupSizes[1] = 0;
+-groupBases[0] = 0;
+-groupBases[1] = 0;
+-var base = 2 - 1;
+-while (++base < 36 + 1) {
+-  var groupSize = 0;
+-  var groupBase = 1;
+-  while (groupBase < (1 << BN.wordSize) / base) {
+-    groupBase *= base;
+-    groupSize += 1;
++  // Common case.
++  if (typeof arg === 'number') {
++    if (typeof encodingOrOffset === 'string') {
++      throw new Error(
++        'If encoding is specified then the first argument must be a string'
++      )
++    }
++    return allocUnsafe(this, arg)
+   }
+-  groupSizes[base] = groupSize;
+-  groupBases[base] = groupBase;
++  return from(this, arg, encodingOrOffset, length)
+ }
+ 
+-*/
+-
+-var zeros = [
+-  '',
+-  '0',
+-  '00',
+-  '000',
+-  '0000',
+-  '00000',
+-  '000000',
+-  '0000000',
+-  '00000000',
+-  '000000000',
+-  '0000000000',
+-  '00000000000',
+-  '000000000000',
+-  '0000000000000',
+-  '00000000000000',
+-  '000000000000000',
+-  '0000000000000000',
+-  '00000000000000000',
+-  '000000000000000000',
+-  '0000000000000000000',
+-  '00000000000000000000',
+-  '000000000000000000000',
+-  '0000000000000000000000',
+-  '00000000000000000000000',
+-  '000000000000000000000000',
+-  '0000000000000000000000000'
+-];
++Buffer.poolSize = 8192 // not used by this implementation
+ 
+-var groupSizes = [
+-  0, 0,
+-  25, 16, 12, 11, 10, 9, 8,
+-  8, 7, 7, 7, 7, 6, 6,
+-  6, 6, 6, 6, 6, 5, 5,
+-  5, 5, 5, 5, 5, 5, 5,
+-  5, 5, 5, 5, 5, 5, 5
+-];
++// TODO: Legacy, not needed anymore. Remove in next major version.
++Buffer._augment = function (arr) {
++  arr.__proto__ = Buffer.prototype
++  return arr
++}
+ 
+-var groupBases = [
+-  0, 0,
+-  33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
+-  43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
+-  16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
+-  6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
+-  24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
+-];
++function from (that, value, encodingOrOffset, length) {
++  if (typeof value === 'number') {
++    throw new TypeError('"value" argument must not be a number')
++  }
+ 
+-BN.prototype.toString = function toString(base, padding) {
+-  base = base || 10;
+-  if (base === 16 || base === 'hex') {
+-    var out = '';
+-    var off = 0;
+-    var padding = padding | 0 || 1;
+-    var carry = 0;
+-    for (var i = 0; i < this.length; i++) {
+-      var w = this.words[i];
+-      var word = (((w << off) | carry) & 0xffffff).toString(16);
+-      carry = (w >>> (24 - off)) & 0xffffff;
+-      if (carry !== 0 || i !== this.length - 1)
+-        out = zeros[6 - word.length] + word + out;
+-      else
+-        out = word + out;
+-      off += 2;
+-      if (off >= 26) {
+-        off -= 26;
+-        i--;
+-      }
+-    }
+-    if (carry !== 0)
+-      out = carry.toString(16) + out;
+-    while (out.length % padding !== 0)
+-      out = '0' + out;
+-    if (this.sign)
+-      out = '-' + out;
+-    return out;
+-  } else if (base === (base | 0) && base >= 2 && base <= 36) {
+-    // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
+-    var groupSize = groupSizes[base];
+-    // var groupBase = Math.pow(base, groupSize);
+-    var groupBase = groupBases[base];
+-    var out = '';
+-    var c = this.clone();
+-    c.sign = false;
+-    while (c.cmpn(0) !== 0) {
+-      var r = c.modn(groupBase).toString(base);
+-      c = c.idivn(groupBase);
++  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
++    return fromArrayBuffer(that, value, encodingOrOffset, length)
++  }
+ 
+-      if (c.cmpn(0) !== 0)
+-        out = zeros[groupSize - r.length] + r + out;
+-      else
+-        out = r + out;
+-    }
+-    if (this.cmpn(0) === 0)
+-      out = '0' + out;
+-    if (this.sign)
+-      out = '-' + out;
+-    return out;
+-  } else {
+-    assert(false, 'Base should be between 2 and 36');
++  if (typeof value === 'string') {
++    return fromString(that, value, encodingOrOffset)
+   }
+-};
+ 
+-BN.prototype.toJSON = function toJSON() {
+-  return this.toString(16);
+-};
++  return fromObject(that, value)
++}
+ 
+-BN.prototype.toArray = function toArray(endian) {
+-  this.strip();
+-  var res = new Array(this.byteLength());
+-  res[0] = 0;
++/**
++ * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
++ * if value is a number.
++ * Buffer.from(str[, encoding])
++ * Buffer.from(array)
++ * Buffer.from(buffer)
++ * Buffer.from(arrayBuffer[, byteOffset[, length]])
++ **/
++Buffer.from = function (value, encodingOrOffset, length) {
++  return from(null, value, encodingOrOffset, length)
++}
+ 
+-  var q = this.clone();
+-  if (endian !== 'le') {
+-    // Assume big-endian
+-    for (var i = 0; q.cmpn(0) !== 0; i++) {
+-      var b = q.andln(0xff);
+-      q.ishrn(8);
++if (Buffer.TYPED_ARRAY_SUPPORT) {
++  Buffer.prototype.__proto__ = Uint8Array.prototype
++  Buffer.__proto__ = Uint8Array
++  if (typeof Symbol !== 'undefined' && Symbol.species &&
++      Buffer[Symbol.species] === Buffer) {
++    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
++    Object.defineProperty(Buffer, Symbol.species, {
++      value: null,
++      configurable: true
++    })
++  }
++}
+ 
+-      res[res.length - i - 1] = b;
+-    }
+-  } else {
+-    // Assume little-endian
+-    for (var i = 0; q.cmpn(0) !== 0; i++) {
+-      var b = q.andln(0xff);
+-      q.ishrn(8);
++function assertSize (size) {
++  if (typeof size !== 'number') {
++    throw new TypeError('"size" argument must be a number')
++  } else if (size < 0) {
++    throw new RangeError('"size" argument must not be negative')
++  }
++}
+ 
+-      res[i] = b;
+-    }
++function alloc (that, size, fill, encoding) {
++  assertSize(size)
++  if (size <= 0) {
++    return createBuffer(that, size)
+   }
++  if (fill !== undefined) {
++    // Only pay attention to encoding if it's a string. This
++    // prevents accidentally sending in a number that would
++    // be interpretted as a start offset.
++    return typeof encoding === 'string'
++      ? createBuffer(that, size).fill(fill, encoding)
++      : createBuffer(that, size).fill(fill)
++  }
++  return createBuffer(that, size)
++}
+ 
+-  return res;
+-};
++/**
++ * Creates a new filled Buffer instance.
++ * alloc(size[, fill[, encoding]])
++ **/
++Buffer.alloc = function (size, fill, encoding) {
++  return alloc(null, size, fill, encoding)
++}
+ 
+-if (Math.clz32) {
+-  BN.prototype._countBits = function _countBits(w) {
+-    return 32 - Math.clz32(w);
+-  };
+-} else {
+-  BN.prototype._countBits = function _countBits(w) {
+-    var t = w;
+-    var r = 0;
+-    if (t >= 0x1000) {
+-      r += 13;
+-      t >>>= 13;
+-    }
+-    if (t >= 0x40) {
+-      r += 7;
+-      t >>>= 7;
+-    }
+-    if (t >= 0x8) {
+-      r += 4;
+-      t >>>= 4;
+-    }
+-    if (t >= 0x02) {
+-      r += 2;
+-      t >>>= 2;
++function allocUnsafe (that, size) {
++  assertSize(size)
++  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) {
++    for (var i = 0; i < size; ++i) {
++      that[i] = 0
+     }
+-    return r + t;
+-  };
++  }
++  return that
+ }
+ 
+-BN.prototype._zeroBits = function _zeroBits(w) {
+-  // Short-cut
+-  if (w === 0)
+-    return 26;
++/**
++ * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
++ * */
++Buffer.allocUnsafe = function (size) {
++  return allocUnsafe(null, size)
++}
++/**
++ * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
++ */
++Buffer.allocUnsafeSlow = function (size) {
++  return allocUnsafe(null, size)
++}
+ 
+-  var t = w;
+-  var r = 0;
+-  if ((t & 0x1fff) === 0) {
+-    r += 13;
+-    t >>>= 13;
+-  }
+-  if ((t & 0x7f) === 0) {
+-    r += 7;
+-    t >>>= 7;
+-  }
+-  if ((t & 0xf) === 0) {
+-    r += 4;
+-    t >>>= 4;
++function fromString (that, string, encoding) {
++  if (typeof encoding !== 'string' || encoding === '') {
++    encoding = 'utf8'
+   }
+-  if ((t & 0x3) === 0) {
+-    r += 2;
+-    t >>>= 2;
++
++  if (!Buffer.isEncoding(encoding)) {
++    throw new TypeError('"encoding" must be a valid string encoding')
+   }
+-  if ((t & 0x1) === 0)
+-    r++;
+-  return r;
+-};
+ 
+-// Return number of used bits in a BN
+-BN.prototype.bitLength = function bitLength() {
+-  var hi = 0;
+-  var w = this.words[this.length - 1];
+-  var hi = this._countBits(w);
+-  return (this.length - 1) * 26 + hi;
+-};
++  var length = byteLength(string, encoding) | 0
++  that = createBuffer(that, length)
+ 
+-// Number of trailing zero bits
+-BN.prototype.zeroBits = function zeroBits() {
+-  if (this.cmpn(0) === 0)
+-    return 0;
++  var actual = that.write(string, encoding)
+ 
+-  var r = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var b = this._zeroBits(this.words[i]);
+-    r += b;
+-    if (b !== 26)
+-      break;
++  if (actual !== length) {
++    // Writing a hex string, for example, that contains invalid characters will
++    // cause everything after the first invalid character to be ignored. (e.g.
++    // 'abxxcd' will be treated as 'ab')
++    that = that.slice(0, actual)
+   }
+-  return r;
+-};
+ 
+-BN.prototype.byteLength = function byteLength() {
+-  return Math.ceil(this.bitLength() / 8);
+-};
++  return that
++}
+ 
+-// Return negative clone of `this`
+-BN.prototype.neg = function neg() {
+-  if (this.cmpn(0) === 0)
+-    return this.clone();
++function fromArrayLike (that, array) {
++  var length = array.length < 0 ? 0 : checked(array.length) | 0
++  that = createBuffer(that, length)
++  for (var i = 0; i < length; i += 1) {
++    that[i] = array[i] & 255
++  }
++  return that
++}
+ 
+-  var r = this.clone();
+-  r.sign = !this.sign;
+-  return r;
+-};
++function fromArrayBuffer (that, array, byteOffset, length) {
++  array.byteLength // this throws if `array` is not a valid ArrayBuffer
+ 
++  if (byteOffset < 0 || array.byteLength < byteOffset) {
++    throw new RangeError('\'offset\' is out of bounds')
++  }
+ 
+-// Or `num` with `this` in-place
+-BN.prototype.ior = function ior(num) {
+-  this.sign = this.sign || num.sign;
++  if (array.byteLength < byteOffset + (length || 0)) {
++    throw new RangeError('\'length\' is out of bounds')
++  }
+ 
+-  while (this.length < num.length)
+-    this.words[this.length++] = 0;
++  if (byteOffset === undefined && length === undefined) {
++    array = new Uint8Array(array)
++  } else if (length === undefined) {
++    array = new Uint8Array(array, byteOffset)
++  } else {
++    array = new Uint8Array(array, byteOffset, length)
++  }
+ 
+-  for (var i = 0; i < num.length; i++)
+-    this.words[i] = this.words[i] | num.words[i];
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    // Return an augmented `Uint8Array` instance, for best performance
++    that = array
++    that.__proto__ = Buffer.prototype
++  } else {
++    // Fallback: Return an object instance of the Buffer class
++    that = fromArrayLike(that, array)
++  }
++  return that
++}
+ 
+-  return this.strip();
+-};
++function fromObject (that, obj) {
++  if (Buffer.isBuffer(obj)) {
++    var len = checked(obj.length) | 0
++    that = createBuffer(that, len)
+ 
++    if (that.length === 0) {
++      return that
++    }
+ 
+-// Or `num` with `this`
+-BN.prototype.or = function or(num) {
+-  if (this.length > num.length)
+-    return this.clone().ior(num);
+-  else
+-    return num.clone().ior(this);
+-};
++    obj.copy(that, 0, 0, len)
++    return that
++  }
+ 
++  if (obj) {
++    if ((typeof ArrayBuffer !== 'undefined' &&
++        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
++      if (typeof obj.length !== 'number' || isnan(obj.length)) {
++        return createBuffer(that, 0)
++      }
++      return fromArrayLike(that, obj)
++    }
+ 
+-// And `num` with `this` in-place
+-BN.prototype.iand = function iand(num) {
+-  this.sign = this.sign && num.sign;
++    if (obj.type === 'Buffer' && isArray(obj.data)) {
++      return fromArrayLike(that, obj.data)
++    }
++  }
+ 
+-  // b = min-length(num, this)
+-  var b;
+-  if (this.length > num.length)
+-    b = num;
+-  else
+-    b = this;
++  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
++}
+ 
+-  for (var i = 0; i < b.length; i++)
+-    this.words[i] = this.words[i] & num.words[i];
++function checked (length) {
++  // Note: cannot use `length < kMaxLength()` here because that fails when
++  // length is NaN (which is otherwise coerced to zero.)
++  if (length >= kMaxLength()) {
++    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
++                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
++  }
++  return length | 0
++}
+ 
+-  this.length = b.length;
++function SlowBuffer (length) {
++  if (+length != length) { // eslint-disable-line eqeqeq
++    length = 0
++  }
++  return Buffer.alloc(+length)
++}
+ 
+-  return this.strip();
+-};
++Buffer.isBuffer = function isBuffer (b) {
++  return !!(b != null && b._isBuffer)
++}
+ 
++Buffer.compare = function compare (a, b) {
++  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
++    throw new TypeError('Arguments must be Buffers')
++  }
+ 
+-// And `num` with `this`
+-BN.prototype.and = function and(num) {
+-  if (this.length > num.length)
+-    return this.clone().iand(num);
+-  else
+-    return num.clone().iand(this);
+-};
++  if (a === b) return 0
++
++  var x = a.length
++  var y = b.length
+ 
++  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
++    if (a[i] !== b[i]) {
++      x = a[i]
++      y = b[i]
++      break
++    }
++  }
+ 
+-// Xor `num` with `this` in-place
+-BN.prototype.ixor = function ixor(num) {
+-  this.sign = this.sign || num.sign;
++  if (x < y) return -1
++  if (y < x) return 1
++  return 0
++}
+ 
+-  // a.length > b.length
+-  var a;
+-  var b;
+-  if (this.length > num.length) {
+-    a = this;
+-    b = num;
+-  } else {
+-    a = num;
+-    b = this;
++Buffer.isEncoding = function isEncoding (encoding) {
++  switch (String(encoding).toLowerCase()) {
++    case 'hex':
++    case 'utf8':
++    case 'utf-8':
++    case 'ascii':
++    case 'latin1':
++    case 'binary':
++    case 'base64':
++    case 'ucs2':
++    case 'ucs-2':
++    case 'utf16le':
++    case 'utf-16le':
++      return true
++    default:
++      return false
+   }
++}
+ 
+-  for (var i = 0; i < b.length; i++)
+-    this.words[i] = a.words[i] ^ b.words[i];
++Buffer.concat = function concat (list, length) {
++  if (!isArray(list)) {
++    throw new TypeError('"list" argument must be an Array of Buffers')
++  }
+ 
+-  if (this !== a)
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
++  if (list.length === 0) {
++    return Buffer.alloc(0)
++  }
+ 
+-  this.length = a.length;
++  var i
++  if (length === undefined) {
++    length = 0
++    for (i = 0; i < list.length; ++i) {
++      length += list[i].length
++    }
++  }
+ 
+-  return this.strip();
+-};
++  var buffer = Buffer.allocUnsafe(length)
++  var pos = 0
++  for (i = 0; i < list.length; ++i) {
++    var buf = list[i]
++    if (!Buffer.isBuffer(buf)) {
++      throw new TypeError('"list" argument must be an Array of Buffers')
++    }
++    buf.copy(buffer, pos)
++    pos += buf.length
++  }
++  return buffer
++}
+ 
++function byteLength (string, encoding) {
++  if (Buffer.isBuffer(string)) {
++    return string.length
++  }
++  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
++      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
++    return string.byteLength
++  }
++  if (typeof string !== 'string') {
++    string = '' + string
++  }
+ 
+-// Xor `num` with `this`
+-BN.prototype.xor = function xor(num) {
+-  if (this.length > num.length)
+-    return this.clone().ixor(num);
+-  else
+-    return num.clone().ixor(this);
+-};
+-
++  var len = string.length
++  if (len === 0) return 0
+ 
+-// Set `bit` of `this`
+-BN.prototype.setn = function setn(bit, val) {
+-  assert(typeof bit === 'number' && bit >= 0);
++  // Use a for loop to avoid recursion
++  var loweredCase = false
++  for (;;) {
++    switch (encoding) {
++      case 'ascii':
++      case 'latin1':
++      case 'binary':
++        return len
++      case 'utf8':
++      case 'utf-8':
++      case undefined:
++        return utf8ToBytes(string).length
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return len * 2
++      case 'hex':
++        return len >>> 1
++      case 'base64':
++        return base64ToBytes(string).length
++      default:
++        if (loweredCase) return utf8ToBytes(string).length // assume utf8
++        encoding = ('' + encoding).toLowerCase()
++        loweredCase = true
++    }
++  }
++}
++Buffer.byteLength = byteLength
+ 
+-  var off = (bit / 26) | 0;
+-  var wbit = bit % 26;
++function slowToString (encoding, start, end) {
++  var loweredCase = false
+ 
+-  while (this.length <= off)
+-    this.words[this.length++] = 0;
++  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
++  // property of a typed array.
+ 
+-  if (val)
+-    this.words[off] = this.words[off] | (1 << wbit);
+-  else
+-    this.words[off] = this.words[off] & ~(1 << wbit);
++  // This behaves neither like String nor Uint8Array in that we set start/end
++  // to their upper/lower bounds if the value passed is out of range.
++  // undefined is handled specially as per ECMA-262 6th Edition,
++  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
++  if (start === undefined || start < 0) {
++    start = 0
++  }
++  // Return early if start > this.length. Done here to prevent potential uint32
++  // coercion fail below.
++  if (start > this.length) {
++    return ''
++  }
+ 
+-  return this.strip();
+-};
++  if (end === undefined || end > this.length) {
++    end = this.length
++  }
+ 
++  if (end <= 0) {
++    return ''
++  }
+ 
+-// Add `num` to `this` in-place
+-BN.prototype.iadd = function iadd(num) {
+-  // negative + positive
+-  if (this.sign && !num.sign) {
+-    this.sign = false;
+-    var r = this.isub(num);
+-    this.sign = !this.sign;
+-    return this._normSign();
++  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
++  end >>>= 0
++  start >>>= 0
+ 
+-  // positive + negative
+-  } else if (!this.sign && num.sign) {
+-    num.sign = false;
+-    var r = this.isub(num);
+-    num.sign = true;
+-    return r._normSign();
++  if (end <= start) {
++    return ''
+   }
+ 
+-  // a.length > b.length
+-  var a;
+-  var b;
+-  if (this.length > num.length) {
+-    a = this;
+-    b = num;
+-  } else {
+-    a = num;
+-    b = this;
++  if (!encoding) encoding = 'utf8'
++
++  while (true) {
++    switch (encoding) {
++      case 'hex':
++        return hexSlice(this, start, end)
++
++      case 'utf8':
++      case 'utf-8':
++        return utf8Slice(this, start, end)
++
++      case 'ascii':
++        return asciiSlice(this, start, end)
++
++      case 'latin1':
++      case 'binary':
++        return latin1Slice(this, start, end)
++
++      case 'base64':
++        return base64Slice(this, start, end)
++
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return utf16leSlice(this, start, end)
++
++      default:
++        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
++        encoding = (encoding + '').toLowerCase()
++        loweredCase = true
++    }
+   }
++}
+ 
+-  var carry = 0;
+-  for (var i = 0; i < b.length; i++) {
+-    var r = a.words[i] + b.words[i] + carry;
+-    this.words[i] = r & 0x3ffffff;
+-    carry = r >>> 26;
++// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
++// Buffer instances.
++Buffer.prototype._isBuffer = true
++
++function swap (b, n, m) {
++  var i = b[n]
++  b[n] = b[m]
++  b[m] = i
++}
++
++Buffer.prototype.swap16 = function swap16 () {
++  var len = this.length
++  if (len % 2 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 16-bits')
+   }
+-  for (; carry !== 0 && i < a.length; i++) {
+-    var r = a.words[i] + carry;
+-    this.words[i] = r & 0x3ffffff;
+-    carry = r >>> 26;
++  for (var i = 0; i < len; i += 2) {
++    swap(this, i, i + 1)
+   }
++  return this
++}
+ 
+-  this.length = a.length;
+-  if (carry !== 0) {
+-    this.words[this.length] = carry;
+-    this.length++;
+-  // Copy the rest of the words
+-  } else if (a !== this) {
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
++Buffer.prototype.swap32 = function swap32 () {
++  var len = this.length
++  if (len % 4 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 32-bits')
+   }
++  for (var i = 0; i < len; i += 4) {
++    swap(this, i, i + 3)
++    swap(this, i + 1, i + 2)
++  }
++  return this
++}
+ 
+-  return this;
+-};
+-
+-// Add `num` to `this`
+-BN.prototype.add = function add(num) {
+-  if (num.sign && !this.sign) {
+-    num.sign = false;
+-    var res = this.sub(num);
+-    num.sign = true;
+-    return res;
+-  } else if (!num.sign && this.sign) {
+-    this.sign = false;
+-    var res = num.sub(this);
+-    this.sign = true;
+-    return res;
++Buffer.prototype.swap64 = function swap64 () {
++  var len = this.length
++  if (len % 8 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 64-bits')
++  }
++  for (var i = 0; i < len; i += 8) {
++    swap(this, i, i + 7)
++    swap(this, i + 1, i + 6)
++    swap(this, i + 2, i + 5)
++    swap(this, i + 3, i + 4)
+   }
++  return this
++}
+ 
+-  if (this.length > num.length)
+-    return this.clone().iadd(num);
+-  else
+-    return num.clone().iadd(this);
+-};
++Buffer.prototype.toString = function toString () {
++  var length = this.length | 0
++  if (length === 0) return ''
++  if (arguments.length === 0) return utf8Slice(this, 0, length)
++  return slowToString.apply(this, arguments)
++}
+ 
+-// Subtract `num` from `this` in-place
+-BN.prototype.isub = function isub(num) {
+-  // this - (-num) = this + num
+-  if (num.sign) {
+-    num.sign = false;
+-    var r = this.iadd(num);
+-    num.sign = true;
+-    return r._normSign();
++Buffer.prototype.equals = function equals (b) {
++  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
++  if (this === b) return true
++  return Buffer.compare(this, b) === 0
++}
+ 
+-  // -this - num = -(this + num)
+-  } else if (this.sign) {
+-    this.sign = false;
+-    this.iadd(num);
+-    this.sign = true;
+-    return this._normSign();
++Buffer.prototype.inspect = function inspect () {
++  var str = ''
++  var max = exports.INSPECT_MAX_BYTES
++  if (this.length > 0) {
++    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
++    if (this.length > max) str += ' ... '
+   }
++  return '<Buffer ' + str + '>'
++}
+ 
+-  // At this point both numbers are positive
+-  var cmp = this.cmp(num);
++Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
++  if (!Buffer.isBuffer(target)) {
++    throw new TypeError('Argument must be a Buffer')
++  }
+ 
+-  // Optimization - zeroify
+-  if (cmp === 0) {
+-    this.sign = false;
+-    this.length = 1;
+-    this.words[0] = 0;
+-    return this;
++  if (start === undefined) {
++    start = 0
++  }
++  if (end === undefined) {
++    end = target ? target.length : 0
++  }
++  if (thisStart === undefined) {
++    thisStart = 0
++  }
++  if (thisEnd === undefined) {
++    thisEnd = this.length
+   }
+ 
+-  // a > b
+-  var a;
+-  var b;
+-  if (cmp > 0) {
+-    a = this;
+-    b = num;
+-  } else {
+-    a = num;
+-    b = this;
++  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
++    throw new RangeError('out of range index')
+   }
+ 
+-  var carry = 0;
+-  for (var i = 0; i < b.length; i++) {
+-    var r = a.words[i] - b.words[i] + carry;
+-    carry = r >> 26;
+-    this.words[i] = r & 0x3ffffff;
++  if (thisStart >= thisEnd && start >= end) {
++    return 0
+   }
+-  for (; carry !== 0 && i < a.length; i++) {
+-    var r = a.words[i] + carry;
+-    carry = r >> 26;
+-    this.words[i] = r & 0x3ffffff;
++  if (thisStart >= thisEnd) {
++    return -1
++  }
++  if (start >= end) {
++    return 1
+   }
+ 
+-  // Copy rest of the words
+-  if (carry === 0 && i < a.length && a !== this)
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
+-  this.length = Math.max(this.length, i);
++  start >>>= 0
++  end >>>= 0
++  thisStart >>>= 0
++  thisEnd >>>= 0
+ 
+-  if (a !== this)
+-    this.sign = true;
++  if (this === target) return 0
+ 
+-  return this.strip();
+-};
++  var x = thisEnd - thisStart
++  var y = end - start
++  var len = Math.min(x, y)
+ 
+-// Subtract `num` from `this`
+-BN.prototype.sub = function sub(num) {
+-  return this.clone().isub(num);
+-};
++  var thisCopy = this.slice(thisStart, thisEnd)
++  var targetCopy = target.slice(start, end)
+ 
+-/*
+-// NOTE: This could be potentionally used to generate loop-less multiplications
+-function _genCombMulTo(alen, blen) {
+-  var len = alen + blen - 1;
+-  var src = [
+-    'var a = this.words, b = num.words, o = out.words, c = 0, w, ' +
+-        'mask = 0x3ffffff, shift = 0x4000000;',
+-    'out.length = ' + len + ';'
+-  ];
+-  for (var k = 0; k < len; k++) {
+-    var minJ = Math.max(0, k - alen + 1);
+-    var maxJ = Math.min(k, blen - 1);
++  for (var i = 0; i < len; ++i) {
++    if (thisCopy[i] !== targetCopy[i]) {
++      x = thisCopy[i]
++      y = targetCopy[i]
++      break
++    }
++  }
+ 
+-    for (var j = minJ; j <= maxJ; j++) {
+-      var i = k - j;
+-      var mul = 'a[' + i + '] * b[' + j + ']';
++  if (x < y) return -1
++  if (y < x) return 1
++  return 0
++}
+ 
+-      if (j === minJ) {
+-        src.push('w = ' + mul + ' + c;');
+-        src.push('c = (w / shift) | 0;');
++// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
++// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
++//
++// Arguments:
++// - buffer - a Buffer to search
++// - val - a string, Buffer, or number
++// - byteOffset - an index into `buffer`; will be clamped to an int32
++// - encoding - an optional encoding, relevant is val is a string
++// - dir - true for indexOf, false for lastIndexOf
++function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
++  // Empty buffer means no match
++  if (buffer.length === 0) return -1
++
++  // Normalize byteOffset
++  if (typeof byteOffset === 'string') {
++    encoding = byteOffset
++    byteOffset = 0
++  } else if (byteOffset > 0x7fffffff) {
++    byteOffset = 0x7fffffff
++  } else if (byteOffset < -0x80000000) {
++    byteOffset = -0x80000000
++  }
++  byteOffset = +byteOffset  // Coerce to Number.
++  if (isNaN(byteOffset)) {
++    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
++    byteOffset = dir ? 0 : (buffer.length - 1)
++  }
++
++  // Normalize byteOffset: negative offsets start from the end of the buffer
++  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
++  if (byteOffset >= buffer.length) {
++    if (dir) return -1
++    else byteOffset = buffer.length - 1
++  } else if (byteOffset < 0) {
++    if (dir) byteOffset = 0
++    else return -1
++  }
++
++  // Normalize val
++  if (typeof val === 'string') {
++    val = Buffer.from(val, encoding)
++  }
++
++  // Finally, search either indexOf (if dir is true) or lastIndexOf
++  if (Buffer.isBuffer(val)) {
++    // Special case: looking for empty string/buffer always fails
++    if (val.length === 0) {
++      return -1
++    }
++    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
++  } else if (typeof val === 'number') {
++    val = val & 0xFF // Search for a byte value [0-255]
++    if (Buffer.TYPED_ARRAY_SUPPORT &&
++        typeof Uint8Array.prototype.indexOf === 'function') {
++      if (dir) {
++        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
+       } else {
+-        src.push('w += ' + mul + ';');
+-        src.push('c += (w / shift) | 0;');
++        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
+       }
+-      src.push('w &= mask;');
+     }
+-    src.push('o[' + k + '] = w;');
++    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
+   }
+-  src.push('if (c !== 0) {',
+-           '  o[' + k + '] = c;',
+-           '  out.length++;',
+-           '}',
+-           'return out;');
+ 
+-  return src.join('\n');
++  throw new TypeError('val must be string, number or Buffer')
+ }
+-*/
+ 
+-BN.prototype._smallMulTo = function _smallMulTo(num, out) {
+-  out.sign = num.sign !== this.sign;
+-  out.length = this.length + num.length;
++function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
++  var indexSize = 1
++  var arrLength = arr.length
++  var valLength = val.length
+ 
+-  var carry = 0;
+-  for (var k = 0; k < out.length - 1; k++) {
+-    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
+-    // note that ncarry could be >= 0x3ffffff
+-    var ncarry = carry >>> 26;
+-    var rword = carry & 0x3ffffff;
+-    var maxJ = Math.min(k, num.length - 1);
+-    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i] | 0;
+-      var b = num.words[j] | 0;
+-      var r = a * b;
++  if (encoding !== undefined) {
++    encoding = String(encoding).toLowerCase()
++    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
++        encoding === 'utf16le' || encoding === 'utf-16le') {
++      if (arr.length < 2 || val.length < 2) {
++        return -1
++      }
++      indexSize = 2
++      arrLength /= 2
++      valLength /= 2
++      byteOffset /= 2
++    }
++  }
+ 
+-      var lo = r & 0x3ffffff;
+-      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
+-      lo = (lo + rword) | 0;
+-      rword = lo & 0x3ffffff;
+-      ncarry = (ncarry + (lo >>> 26)) | 0;
++  function read (buf, i) {
++    if (indexSize === 1) {
++      return buf[i]
++    } else {
++      return buf.readUInt16BE(i * indexSize)
+     }
+-    out.words[k] = rword;
+-    carry = ncarry;
+   }
+-  if (carry !== 0) {
+-    out.words[k] = carry;
++
++  var i
++  if (dir) {
++    var foundIndex = -1
++    for (i = byteOffset; i < arrLength; i++) {
++      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
++        if (foundIndex === -1) foundIndex = i
++        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
++      } else {
++        if (foundIndex !== -1) i -= i - foundIndex
++        foundIndex = -1
++      }
++    }
+   } else {
+-    out.length--;
++    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
++    for (i = byteOffset; i >= 0; i--) {
++      var found = true
++      for (var j = 0; j < valLength; j++) {
++        if (read(arr, i + j) !== read(val, j)) {
++          found = false
++          break
++        }
++      }
++      if (found) return i
++    }
+   }
+ 
+-  return out.strip();
+-};
++  return -1
++}
+ 
+-BN.prototype._bigMulTo = function _bigMulTo(num, out) {
+-  out.sign = num.sign !== this.sign;
+-  out.length = this.length + num.length;
++Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
++  return this.indexOf(val, byteOffset, encoding) !== -1
++}
+ 
+-  var carry = 0;
+-  var hncarry = 0;
+-  for (var k = 0; k < out.length - 1; k++) {
+-    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
+-    // note that ncarry could be >= 0x3ffffff
+-    var ncarry = hncarry;
+-    hncarry = 0;
+-    var rword = carry & 0x3ffffff;
+-    var maxJ = Math.min(k, num.length - 1);
+-    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i] | 0;
+-      var b = num.words[j] | 0;
+-      var r = a * b;
++Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
++  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
++}
+ 
+-      var lo = r & 0x3ffffff;
+-      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
+-      lo = (lo + rword) | 0;
+-      rword = lo & 0x3ffffff;
+-      ncarry = (ncarry + (lo >>> 26)) | 0;
++Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
++  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
++}
+ 
+-      hncarry += ncarry >>> 26;
+-      ncarry &= 0x3ffffff;
+-    }
+-    out.words[k] = rword;
+-    carry = ncarry;
+-    ncarry = hncarry;
+-  }
+-  if (carry !== 0) {
+-    out.words[k] = carry;
++function hexWrite (buf, string, offset, length) {
++  offset = Number(offset) || 0
++  var remaining = buf.length - offset
++  if (!length) {
++    length = remaining
+   } else {
+-    out.length--;
++    length = Number(length)
++    if (length > remaining) {
++      length = remaining
++    }
+   }
+ 
+-  return out.strip();
+-};
++  // must be an even number of digits
++  var strLen = string.length
++  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
+ 
+-BN.prototype.mulTo = function mulTo(num, out) {
+-  var res;
+-  if (this.length + num.length < 63)
+-    res = this._smallMulTo(num, out);
+-  else
+-    res = this._bigMulTo(num, out);
+-  return res;
+-};
++  if (length > strLen / 2) {
++    length = strLen / 2
++  }
++  for (var i = 0; i < length; ++i) {
++    var parsed = parseInt(string.substr(i * 2, 2), 16)
++    if (isNaN(parsed)) return i
++    buf[offset + i] = parsed
++  }
++  return i
++}
+ 
+-// Multiply `this` by `num`
+-BN.prototype.mul = function mul(num) {
+-  var out = new BN(null);
+-  out.words = new Array(this.length + num.length);
+-  return this.mulTo(num, out);
+-};
++function utf8Write (buf, string, offset, length) {
++  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
++}
+ 
+-// In-place Multiplication
+-BN.prototype.imul = function imul(num) {
+-  if (this.cmpn(0) === 0 || num.cmpn(0) === 0) {
+-    this.words[0] = 0;
+-    this.length = 1;
+-    return this;
+-  }
++function asciiWrite (buf, string, offset, length) {
++  return blitBuffer(asciiToBytes(string), buf, offset, length)
++}
+ 
+-  var tlen = this.length;
+-  var nlen = num.length;
++function latin1Write (buf, string, offset, length) {
++  return asciiWrite(buf, string, offset, length)
++}
+ 
+-  this.sign = num.sign !== this.sign;
+-  this.length = this.length + num.length;
+-  this.words[this.length - 1] = 0;
++function base64Write (buf, string, offset, length) {
++  return blitBuffer(base64ToBytes(string), buf, offset, length)
++}
+ 
+-  for (var k = this.length - 2; k >= 0; k--) {
+-    // Sum all words with the same `i + j = k` and accumulate `carry`,
+-    // note that carry could be >= 0x3ffffff
+-    var carry = 0;
+-    var rword = 0;
+-    var maxJ = Math.min(k, nlen - 1);
+-    for (var j = Math.max(0, k - tlen + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i];
+-      var b = num.words[j];
+-      var r = a * b;
++function ucs2Write (buf, string, offset, length) {
++  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
++}
+ 
+-      var lo = r & 0x3ffffff;
+-      carry += (r / 0x4000000) | 0;
+-      lo += rword;
+-      rword = lo & 0x3ffffff;
+-      carry += lo >>> 26;
++Buffer.prototype.write = function write (string, offset, length, encoding) {
++  // Buffer#write(string)
++  if (offset === undefined) {
++    encoding = 'utf8'
++    length = this.length
++    offset = 0
++  // Buffer#write(string, encoding)
++  } else if (length === undefined && typeof offset === 'string') {
++    encoding = offset
++    length = this.length
++    offset = 0
++  // Buffer#write(string, offset[, length][, encoding])
++  } else if (isFinite(offset)) {
++    offset = offset | 0
++    if (isFinite(length)) {
++      length = length | 0
++      if (encoding === undefined) encoding = 'utf8'
++    } else {
++      encoding = length
++      length = undefined
+     }
+-    this.words[k] = rword;
+-    this.words[k + 1] += carry;
+-    carry = 0;
+-  }
+-
+-  // Propagate overflows
+-  var carry = 0;
+-  for (var i = 1; i < this.length; i++) {
+-    var w = this.words[i] + carry;
+-    this.words[i] = w & 0x3ffffff;
+-    carry = w >>> 26;
++  // legacy write(string, encoding, offset, length) - remove in v0.13
++  } else {
++    throw new Error(
++      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
++    )
+   }
+ 
+-  return this.strip();
+-};
+-
+-BN.prototype.imuln = function imuln(num) {
+-  assert(typeof num === 'number');
++  var remaining = this.length - offset
++  if (length === undefined || length > remaining) length = remaining
+ 
+-  // Carry
+-  var carry = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var w = this.words[i] * num;
+-    var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
+-    carry >>= 26;
+-    carry += (w / 0x4000000) | 0;
+-    // NOTE: lo is 27bit maximum
+-    carry += lo >>> 26;
+-    this.words[i] = lo & 0x3ffffff;
++  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
++    throw new RangeError('Attempt to write outside buffer bounds')
+   }
+ 
+-  if (carry !== 0) {
+-    this.words[i] = carry;
+-    this.length++;
+-  }
++  if (!encoding) encoding = 'utf8'
+ 
+-  return this;
+-};
++  var loweredCase = false
++  for (;;) {
++    switch (encoding) {
++      case 'hex':
++        return hexWrite(this, string, offset, length)
+ 
+-BN.prototype.muln = function muln(num) {
+-  return this.clone().imuln(num);
+-};
++      case 'utf8':
++      case 'utf-8':
++        return utf8Write(this, string, offset, length)
+ 
+-// `this` * `this`
+-BN.prototype.sqr = function sqr() {
+-  return this.mul(this);
+-};
++      case 'ascii':
++        return asciiWrite(this, string, offset, length)
+ 
+-// `this` * `this` in-place
+-BN.prototype.isqr = function isqr() {
+-  return this.mul(this);
+-};
++      case 'latin1':
++      case 'binary':
++        return latin1Write(this, string, offset, length)
+ 
+-// Shift-left in-place
+-BN.prototype.ishln = function ishln(bits) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var r = bits % 26;
+-  var s = (bits - r) / 26;
+-  var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
++      case 'base64':
++        // Warning: maxLength not taken into account in base64Write
++        return base64Write(this, string, offset, length)
+ 
+-  if (r !== 0) {
+-    var carry = 0;
+-    for (var i = 0; i < this.length; i++) {
+-      var newCarry = this.words[i] & carryMask;
+-      var c = (this.words[i] - newCarry) << r;
+-      this.words[i] = c | carry;
+-      carry = newCarry >>> (26 - r);
+-    }
+-    if (carry) {
+-      this.words[i] = carry;
+-      this.length++;
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return ucs2Write(this, string, offset, length)
++
++      default:
++        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
++        encoding = ('' + encoding).toLowerCase()
++        loweredCase = true
+     }
+   }
++}
+ 
+-  if (s !== 0) {
+-    for (var i = this.length - 1; i >= 0; i--)
+-      this.words[i + s] = this.words[i];
+-    for (var i = 0; i < s; i++)
+-      this.words[i] = 0;
+-    this.length += s;
++Buffer.prototype.toJSON = function toJSON () {
++  return {
++    type: 'Buffer',
++    data: Array.prototype.slice.call(this._arr || this, 0)
+   }
++}
+ 
+-  return this.strip();
+-};
++function base64Slice (buf, start, end) {
++  if (start === 0 && end === buf.length) {
++    return base64.fromByteArray(buf)
++  } else {
++    return base64.fromByteArray(buf.slice(start, end))
++  }
++}
+ 
+-// Shift-right in-place
+-// NOTE: `hint` is a lowest bit before trailing zeroes
+-// NOTE: if `extended` is present - it will be filled with destroyed bits
+-BN.prototype.ishrn = function ishrn(bits, hint, extended) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var h;
+-  if (hint)
+-    h = (hint - (hint % 26)) / 26;
+-  else
+-    h = 0;
++function utf8Slice (buf, start, end) {
++  end = Math.min(buf.length, end)
++  var res = []
+ 
+-  var r = bits % 26;
+-  var s = Math.min((bits - r) / 26, this.length);
+-  var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
+-  var maskedWords = extended;
++  var i = start
++  while (i < end) {
++    var firstByte = buf[i]
++    var codePoint = null
++    var bytesPerSequence = (firstByte > 0xEF) ? 4
++      : (firstByte > 0xDF) ? 3
++      : (firstByte > 0xBF) ? 2
++      : 1
+ 
+-  h -= s;
+-  h = Math.max(0, h);
++    if (i + bytesPerSequence <= end) {
++      var secondByte, thirdByte, fourthByte, tempCodePoint
+ 
+-  // Extended mode, copy masked part
+-  if (maskedWords) {
+-    for (var i = 0; i < s; i++)
+-      maskedWords.words[i] = this.words[i];
+-    maskedWords.length = s;
+-  }
++      switch (bytesPerSequence) {
++        case 1:
++          if (firstByte < 0x80) {
++            codePoint = firstByte
++          }
++          break
++        case 2:
++          secondByte = buf[i + 1]
++          if ((secondByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
++            if (tempCodePoint > 0x7F) {
++              codePoint = tempCodePoint
++            }
++          }
++          break
++        case 3:
++          secondByte = buf[i + 1]
++          thirdByte = buf[i + 2]
++          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
++            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
++              codePoint = tempCodePoint
++            }
++          }
++          break
++        case 4:
++          secondByte = buf[i + 1]
++          thirdByte = buf[i + 2]
++          fourthByte = buf[i + 3]
++          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
++            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
++              codePoint = tempCodePoint
++            }
++          }
++      }
++    }
+ 
+-  if (s === 0) {
+-    // No-op, we should not move anything at all
+-  } else if (this.length > s) {
+-    this.length -= s;
+-    for (var i = 0; i < this.length; i++)
+-      this.words[i] = this.words[i + s];
+-  } else {
+-    this.words[0] = 0;
+-    this.length = 1;
+-  }
++    if (codePoint === null) {
++      // we did not generate a valid codePoint so insert a
++      // replacement char (U+FFFD) and advance only 1 byte
++      codePoint = 0xFFFD
++      bytesPerSequence = 1
++    } else if (codePoint > 0xFFFF) {
++      // encode to utf16 (surrogate pair dance)
++      codePoint -= 0x10000
++      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
++      codePoint = 0xDC00 | codePoint & 0x3FF
++    }
+ 
+-  var carry = 0;
+-  for (var i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
+-    var word = this.words[i];
+-    this.words[i] = (carry << (26 - r)) | (word >>> r);
+-    carry = word & mask;
++    res.push(codePoint)
++    i += bytesPerSequence
+   }
+ 
+-  // Push carried bits as a mask
+-  if (maskedWords && carry !== 0)
+-    maskedWords.words[maskedWords.length++] = carry;
++  return decodeCodePointsArray(res)
++}
+ 
+-  if (this.length === 0) {
+-    this.words[0] = 0;
+-    this.length = 1;
+-  }
++// Based on http://stackoverflow.com/a/22747272/680742, the browser with
++// the lowest limit is Chrome, with 0x10000 args.
++// We go 1 magnitude less, for safety
++var MAX_ARGUMENTS_LENGTH = 0x1000
+ 
+-  this.strip();
++function decodeCodePointsArray (codePoints) {
++  var len = codePoints.length
++  if (len <= MAX_ARGUMENTS_LENGTH) {
++    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
++  }
+ 
+-  return this;
+-};
++  // Decode in chunks to avoid "call stack size exceeded".
++  var res = ''
++  var i = 0
++  while (i < len) {
++    res += String.fromCharCode.apply(
++      String,
++      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
++    )
++  }
++  return res
++}
+ 
+-// Shift-left
+-BN.prototype.shln = function shln(bits) {
+-  return this.clone().ishln(bits);
+-};
++function asciiSlice (buf, start, end) {
++  var ret = ''
++  end = Math.min(buf.length, end)
+ 
+-// Shift-right
+-BN.prototype.shrn = function shrn(bits) {
+-  return this.clone().ishrn(bits);
+-};
++  for (var i = start; i < end; ++i) {
++    ret += String.fromCharCode(buf[i] & 0x7F)
++  }
++  return ret
++}
+ 
+-// Test if n bit is set
+-BN.prototype.testn = function testn(bit) {
+-  assert(typeof bit === 'number' && bit >= 0);
+-  var r = bit % 26;
+-  var s = (bit - r) / 26;
+-  var q = 1 << r;
++function latin1Slice (buf, start, end) {
++  var ret = ''
++  end = Math.min(buf.length, end)
+ 
+-  // Fast case: bit is much higher than all existing words
+-  if (this.length <= s) {
+-    return false;
++  for (var i = start; i < end; ++i) {
++    ret += String.fromCharCode(buf[i])
+   }
++  return ret
++}
+ 
+-  // Check bit and return
+-  var w = this.words[s];
++function hexSlice (buf, start, end) {
++  var len = buf.length
+ 
+-  return !!(w & q);
+-};
++  if (!start || start < 0) start = 0
++  if (!end || end < 0 || end > len) end = len
+ 
+-// Return only lowers bits of number (in-place)
+-BN.prototype.imaskn = function imaskn(bits) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var r = bits % 26;
+-  var s = (bits - r) / 26;
++  var out = ''
++  for (var i = start; i < end; ++i) {
++    out += toHex(buf[i])
++  }
++  return out
++}
+ 
+-  assert(!this.sign, 'imaskn works only with positive numbers');
++function utf16leSlice (buf, start, end) {
++  var bytes = buf.slice(start, end)
++  var res = ''
++  for (var i = 0; i < bytes.length; i += 2) {
++    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
++  }
++  return res
++}
+ 
+-  if (r !== 0)
+-    s++;
+-  this.length = Math.min(s, this.length);
++Buffer.prototype.slice = function slice (start, end) {
++  var len = this.length
++  start = ~~start
++  end = end === undefined ? len : ~~end
+ 
+-  if (r !== 0) {
+-    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
+-    this.words[this.length - 1] &= mask;
++  if (start < 0) {
++    start += len
++    if (start < 0) start = 0
++  } else if (start > len) {
++    start = len
+   }
+ 
+-  return this.strip();
+-};
+-
+-// Return only lowers bits of number
+-BN.prototype.maskn = function maskn(bits) {
+-  return this.clone().imaskn(bits);
+-};
++  if (end < 0) {
++    end += len
++    if (end < 0) end = 0
++  } else if (end > len) {
++    end = len
++  }
+ 
+-// Add plain number `num` to `this`
+-BN.prototype.iaddn = function iaddn(num) {
+-  assert(typeof num === 'number');
+-  if (num < 0)
+-    return this.isubn(-num);
++  if (end < start) end = start
+ 
+-  // Possible sign change
+-  if (this.sign) {
+-    if (this.length === 1 && this.words[0] < num) {
+-      this.words[0] = num - this.words[0];
+-      this.sign = false;
+-      return this;
++  var newBuf
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    newBuf = this.subarray(start, end)
++    newBuf.__proto__ = Buffer.prototype
++  } else {
++    var sliceLen = end - start
++    newBuf = new Buffer(sliceLen, undefined)
++    for (var i = 0; i < sliceLen; ++i) {
++      newBuf[i] = this[i + start]
+     }
+-
+-    this.sign = false;
+-    this.isubn(num);
+-    this.sign = true;
+-    return this;
+   }
+ 
+-  // Add without checks
+-  return this._iaddn(num);
+-};
++  return newBuf
++}
+ 
+-BN.prototype._iaddn = function _iaddn(num) {
+-  this.words[0] += num;
++/*
++ * Need to make sure that buffer isn't trying to write out of bounds.
++ */
++function checkOffset (offset, ext, length) {
++  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
++  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
++}
+ 
+-  // Carry
+-  for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
+-    this.words[i] -= 0x4000000;
+-    if (i === this.length - 1)
+-      this.words[i + 1] = 1;
+-    else
+-      this.words[i + 1]++;
++Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
++
++  var val = this[offset]
++  var mul = 1
++  var i = 0
++  while (++i < byteLength && (mul *= 0x100)) {
++    val += this[offset + i] * mul
+   }
+-  this.length = Math.max(this.length, i + 1);
+ 
+-  return this;
+-};
++  return val
++}
+ 
+-// Subtract plain number `num` from `this`
+-BN.prototype.isubn = function isubn(num) {
+-  assert(typeof num === 'number');
+-  if (num < 0)
+-    return this.iaddn(-num);
++Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    checkOffset(offset, byteLength, this.length)
++  }
+ 
+-  if (this.sign) {
+-    this.sign = false;
+-    this.iaddn(num);
+-    this.sign = true;
+-    return this;
++  var val = this[offset + --byteLength]
++  var mul = 1
++  while (byteLength > 0 && (mul *= 0x100)) {
++    val += this[offset + --byteLength] * mul
+   }
+ 
+-  this.words[0] -= num;
++  return val
++}
+ 
+-  // Carry
+-  for (var i = 0; i < this.length && this.words[i] < 0; i++) {
+-    this.words[i] += 0x4000000;
+-    this.words[i + 1] -= 1;
+-  }
++Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 1, this.length)
++  return this[offset]
++}
+ 
+-  return this.strip();
+-};
++Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  return this[offset] | (this[offset + 1] << 8)
++}
+ 
+-BN.prototype.addn = function addn(num) {
+-  return this.clone().iaddn(num);
+-};
++Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  return (this[offset] << 8) | this[offset + 1]
++}
+ 
+-BN.prototype.subn = function subn(num) {
+-  return this.clone().isubn(num);
+-};
++Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-BN.prototype.iabs = function iabs() {
+-  this.sign = false;
++  return ((this[offset]) |
++      (this[offset + 1] << 8) |
++      (this[offset + 2] << 16)) +
++      (this[offset + 3] * 0x1000000)
++}
+ 
+-  return this;
+-};
++Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-BN.prototype.abs = function abs() {
+-  return this.clone().iabs();
+-};
++  return (this[offset] * 0x1000000) +
++    ((this[offset + 1] << 16) |
++    (this[offset + 2] << 8) |
++    this[offset + 3])
++}
+ 
+-BN.prototype._ishlnsubmul = function _ishlnsubmul(num, mul, shift) {
+-  // Bigger storage is needed
+-  var len = num.length + shift;
+-  var i;
+-  if (this.words.length < len) {
+-    var t = new Array(len);
+-    for (var i = 0; i < this.length; i++)
+-      t[i] = this.words[i];
+-    this.words = t;
+-  } else {
+-    i = this.length;
++Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
++
++  var val = this[offset]
++  var mul = 1
++  var i = 0
++  while (++i < byteLength && (mul *= 0x100)) {
++    val += this[offset + i] * mul
+   }
++  mul *= 0x80
+ 
+-  // Zeroify rest
+-  this.length = Math.max(this.length, len);
+-  for (; i < this.length; i++)
+-    this.words[i] = 0;
++  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+ 
+-  var carry = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var w = this.words[i + shift] + carry;
+-    var right = num.words[i] * mul;
+-    w -= right & 0x3ffffff;
+-    carry = (w >> 26) - ((right / 0x4000000) | 0);
+-    this.words[i + shift] = w & 0x3ffffff;
+-  }
+-  for (; i < this.length - shift; i++) {
+-    var w = this.words[i + shift] + carry;
+-    carry = w >> 26;
+-    this.words[i + shift] = w & 0x3ffffff;
+-  }
++  return val
++}
+ 
+-  if (carry === 0)
+-    return this.strip();
++Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
+ 
+-  // Subtraction overflow
+-  assert(carry === -1);
+-  carry = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var w = -this.words[i] + carry;
+-    carry = w >> 26;
+-    this.words[i] = w & 0x3ffffff;
++  var i = byteLength
++  var mul = 1
++  var val = this[offset + --i]
++  while (i > 0 && (mul *= 0x100)) {
++    val += this[offset + --i] * mul
+   }
+-  this.sign = true;
++  mul *= 0x80
+ 
+-  return this.strip();
+-};
++  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+ 
+-BN.prototype._wordDiv = function _wordDiv(num, mode) {
+-  var shift = this.length - num.length;
++  return val
++}
+ 
+-  var a = this.clone();
+-  var b = num;
++Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 1, this.length)
++  if (!(this[offset] & 0x80)) return (this[offset])
++  return ((0xff - this[offset] + 1) * -1)
++}
+ 
+-  // Normalize
+-  var bhi = b.words[b.length - 1];
+-  var bhiBits = this._countBits(bhi);
+-  shift = 26 - bhiBits;
+-  if (shift !== 0) {
+-    b = b.shln(shift);
+-    a.ishln(shift);
+-    bhi = b.words[b.length - 1];
+-  }
++Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  var val = this[offset] | (this[offset + 1] << 8)
++  return (val & 0x8000) ? val | 0xFFFF0000 : val
++}
+ 
+-  // Initialize quotient
+-  var m = a.length - b.length;
+-  var q;
++Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  var val = this[offset + 1] | (this[offset] << 8)
++  return (val & 0x8000) ? val | 0xFFFF0000 : val
++}
+ 
+-  if (mode !== 'mod') {
+-    q = new BN(null);
+-    q.length = m + 1;
+-    q.words = new Array(q.length);
+-    for (var i = 0; i < q.length; i++)
+-      q.words[i] = 0;
++Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
++
++  return (this[offset]) |
++    (this[offset + 1] << 8) |
++    (this[offset + 2] << 16) |
++    (this[offset + 3] << 24)
++}
++
++Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
++
++  return (this[offset] << 24) |
++    (this[offset + 1] << 16) |
++    (this[offset + 2] << 8) |
++    (this[offset + 3])
++}
++
++Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
++  return ieee754.read(this, offset, true, 23, 4)
++}
++
++Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
++  return ieee754.read(this, offset, false, 23, 4)
++}
++
++Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 8, this.length)
++  return ieee754.read(this, offset, true, 52, 8)
++}
++
++Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 8, this.length)
++  return ieee754.read(this, offset, false, 52, 8)
++}
++
++function checkInt (buf, value, offset, ext, max, min) {
++  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
++  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
++  if (offset + ext > buf.length) throw new RangeError('Index out of range')
++}
++
++Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    var maxBytes = Math.pow(2, 8 * byteLength) - 1
++    checkInt(this, value, offset, byteLength, maxBytes, 0)
+   }
+ 
+-  var diff = a.clone()._ishlnsubmul(b, 1, m);
+-  if (!diff.sign) {
+-    a = diff;
+-    if (q)
+-      q.words[m] = 1;
++  var mul = 1
++  var i = 0
++  this[offset] = value & 0xFF
++  while (++i < byteLength && (mul *= 0x100)) {
++    this[offset + i] = (value / mul) & 0xFF
+   }
+ 
+-  for (var j = m - 1; j >= 0; j--) {
+-    var qj = a.words[b.length + j] * 0x4000000 + a.words[b.length + j - 1];
++  return offset + byteLength
++}
+ 
+-    // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
+-    // (0x7ffffff)
+-    qj = Math.min((qj / bhi) | 0, 0x3ffffff);
++Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    var maxBytes = Math.pow(2, 8 * byteLength) - 1
++    checkInt(this, value, offset, byteLength, maxBytes, 0)
++  }
+ 
+-    a._ishlnsubmul(b, qj, j);
+-    while (a.sign) {
+-      qj--;
+-      a.sign = false;
+-      a._ishlnsubmul(b, 1, j);
+-      if (a.cmpn(0) !== 0)
+-        a.sign = !a.sign;
+-    }
+-    if (q)
+-      q.words[j] = qj;
++  var i = byteLength - 1
++  var mul = 1
++  this[offset + i] = value & 0xFF
++  while (--i >= 0 && (mul *= 0x100)) {
++    this[offset + i] = (value / mul) & 0xFF
+   }
+-  if (q)
+-    q.strip();
+-  a.strip();
+ 
+-  // Denormalize
+-  if (mode !== 'div' && shift !== 0)
+-    a.ishrn(shift);
+-  return { div: q ? q : null, mod: a };
+-};
++  return offset + byteLength
++}
+ 
+-BN.prototype.divmod = function divmod(num, mode) {
+-  assert(num.cmpn(0) !== 0);
++Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
++  this[offset] = (value & 0xff)
++  return offset + 1
++}
+ 
+-  if (this.sign && !num.sign) {
+-    var res = this.neg().divmod(num, mode);
+-    var div;
+-    var mod;
+-    if (mode !== 'mod')
+-      div = res.div.neg();
+-    if (mode !== 'div')
+-      mod = res.mod.cmpn(0) === 0 ? res.mod : num.sub(res.mod);
+-    return {
+-      div: div,
+-      mod: mod
+-    };
+-  } else if (!this.sign && num.sign) {
+-    var res = this.divmod(num.neg(), mode);
+-    var div;
+-    if (mode !== 'mod')
+-      div = res.div.neg();
+-    return { div: div, mod: res.mod };
+-  } else if (this.sign && num.sign) {
+-    return this.neg().divmod(num.neg(), mode);
++function objectWriteUInt16 (buf, value, offset, littleEndian) {
++  if (value < 0) value = 0xffff + value + 1
++  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
++    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
++      (littleEndian ? i : 1 - i) * 8
+   }
++}
+ 
+-  // Both numbers are positive at this point
++Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++  } else {
++    objectWriteUInt16(this, value, offset, true)
++  }
++  return offset + 2
++}
+ 
+-  // Strip both numbers to approximate shift value
+-  if (num.length > this.length || this.cmp(num) < 0)
+-    return { div: new BN(0), mod: this };
++Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 8)
++    this[offset + 1] = (value & 0xff)
++  } else {
++    objectWriteUInt16(this, value, offset, false)
++  }
++  return offset + 2
++}
+ 
+-  // Very short reduction
+-  if (num.length === 1) {
+-    if (mode === 'div')
+-      return { div: this.divn(num.words[0]), mod: null };
+-    else if (mode === 'mod')
+-      return { div: null, mod: new BN(this.modn(num.words[0])) };
+-    return {
+-      div: this.divn(num.words[0]),
+-      mod: new BN(this.modn(num.words[0]))
+-    };
++function objectWriteUInt32 (buf, value, offset, littleEndian) {
++  if (value < 0) value = 0xffffffff + value + 1
++  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
++    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
+   }
++}
+ 
+-  return this._wordDiv(num, mode);
+-};
++Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset + 3] = (value >>> 24)
++    this[offset + 2] = (value >>> 16)
++    this[offset + 1] = (value >>> 8)
++    this[offset] = (value & 0xff)
++  } else {
++    objectWriteUInt32(this, value, offset, true)
++  }
++  return offset + 4
++}
+ 
+-// Find `this` / `num`
+-BN.prototype.div = function div(num) {
+-  return this.divmod(num, 'div').div;
+-};
++Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 24)
++    this[offset + 1] = (value >>> 16)
++    this[offset + 2] = (value >>> 8)
++    this[offset + 3] = (value & 0xff)
++  } else {
++    objectWriteUInt32(this, value, offset, false)
++  }
++  return offset + 4
++}
+ 
+-// Find `this` % `num`
+-BN.prototype.mod = function mod(num) {
+-  return this.divmod(num, 'mod').mod;
+-};
++Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) {
++    var limit = Math.pow(2, 8 * byteLength - 1)
+ 
+-// Find Round(`this` / `num`)
+-BN.prototype.divRound = function divRound(num) {
+-  var dm = this.divmod(num);
++    checkInt(this, value, offset, byteLength, limit - 1, -limit)
++  }
+ 
+-  // Fast case - exact division
+-  if (dm.mod.cmpn(0) === 0)
+-    return dm.div;
++  var i = 0
++  var mul = 1
++  var sub = 0
++  this[offset] = value & 0xFF
++  while (++i < byteLength && (mul *= 0x100)) {
++    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
++      sub = 1
++    }
++    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
++  }
+ 
+-  var mod = dm.div.sign ? dm.mod.isub(num) : dm.mod;
++  return offset + byteLength
++}
+ 
+-  var half = num.shrn(1);
+-  var r2 = num.andln(1);
+-  var cmp = mod.cmp(half);
++Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) {
++    var limit = Math.pow(2, 8 * byteLength - 1)
+ 
+-  // Round down
+-  if (cmp < 0 || r2 === 1 && cmp === 0)
+-    return dm.div;
++    checkInt(this, value, offset, byteLength, limit - 1, -limit)
++  }
+ 
+-  // Round up
+-  return dm.div.sign ? dm.div.isubn(1) : dm.div.iaddn(1);
+-};
++  var i = byteLength - 1
++  var mul = 1
++  var sub = 0
++  this[offset + i] = value & 0xFF
++  while (--i >= 0 && (mul *= 0x100)) {
++    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
++      sub = 1
++    }
++    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
++  }
+ 
+-BN.prototype.modn = function modn(num) {
+-  assert(num <= 0x3ffffff);
+-  var p = (1 << 26) % num;
++  return offset + byteLength
++}
+ 
+-  var acc = 0;
+-  for (var i = this.length - 1; i >= 0; i--)
+-    acc = (p * acc + this.words[i]) % num;
++Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
++  if (value < 0) value = 0xff + value + 1
++  this[offset] = (value & 0xff)
++  return offset + 1
++}
+ 
+-  return acc;
+-};
++Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++  } else {
++    objectWriteUInt16(this, value, offset, true)
++  }
++  return offset + 2
++}
+ 
+-// In-place division by number
+-BN.prototype.idivn = function idivn(num) {
+-  assert(num <= 0x3ffffff);
++Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 8)
++    this[offset + 1] = (value & 0xff)
++  } else {
++    objectWriteUInt16(this, value, offset, false)
++  }
++  return offset + 2
++}
+ 
+-  var carry = 0;
+-  for (var i = this.length - 1; i >= 0; i--) {
+-    var w = this.words[i] + carry * 0x4000000;
+-    this.words[i] = (w / num) | 0;
+-    carry = w % num;
++Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++    this[offset + 2] = (value >>> 16)
++    this[offset + 3] = (value >>> 24)
++  } else {
++    objectWriteUInt32(this, value, offset, true)
+   }
++  return offset + 4
++}
+ 
+-  return this.strip();
+-};
++Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
++  if (value < 0) value = 0xffffffff + value + 1
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 24)
++    this[offset + 1] = (value >>> 16)
++    this[offset + 2] = (value >>> 8)
++    this[offset + 3] = (value & 0xff)
++  } else {
++    objectWriteUInt32(this, value, offset, false)
++  }
++  return offset + 4
++}
+ 
+-BN.prototype.divn = function divn(num) {
+-  return this.clone().idivn(num);
+-};
++function checkIEEE754 (buf, value, offset, ext, max, min) {
++  if (offset + ext > buf.length) throw new RangeError('Index out of range')
++  if (offset < 0) throw new RangeError('Index out of range')
++}
+ 
+-BN.prototype.egcd = function egcd(p) {
+-  assert(!p.sign);
+-  assert(p.cmpn(0) !== 0);
++function writeFloat (buf, value, offset, littleEndian, noAssert) {
++  if (!noAssert) {
++    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
++  }
++  ieee754.write(buf, value, offset, littleEndian, 23, 4)
++  return offset + 4
++}
+ 
+-  var x = this;
+-  var y = p.clone();
++Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
++  return writeFloat(this, value, offset, true, noAssert)
++}
+ 
+-  if (x.sign)
+-    x = x.mod(p);
+-  else
+-    x = x.clone();
++Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
++  return writeFloat(this, value, offset, false, noAssert)
++}
+ 
+-  // A * x + B * y = x
+-  var A = new BN(1);
+-  var B = new BN(0);
++function writeDouble (buf, value, offset, littleEndian, noAssert) {
++  if (!noAssert) {
++    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
++  }
++  ieee754.write(buf, value, offset, littleEndian, 52, 8)
++  return offset + 8
++}
+ 
+-  // C * x + D * y = y
+-  var C = new BN(0);
+-  var D = new BN(1);
++Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
++  return writeDouble(this, value, offset, true, noAssert)
++}
+ 
+-  var g = 0;
++Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
++  return writeDouble(this, value, offset, false, noAssert)
++}
+ 
+-  while (x.isEven() && y.isEven()) {
+-    x.ishrn(1);
+-    y.ishrn(1);
+-    ++g;
++// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
++Buffer.prototype.copy = function copy (target, targetStart, start, end) {
++  if (!start) start = 0
++  if (!end && end !== 0) end = this.length
++  if (targetStart >= target.length) targetStart = target.length
++  if (!targetStart) targetStart = 0
++  if (end > 0 && end < start) end = start
++
++  // Copy 0 bytes; we're done
++  if (end === start) return 0
++  if (target.length === 0 || this.length === 0) return 0
++
++  // Fatal error conditions
++  if (targetStart < 0) {
++    throw new RangeError('targetStart out of bounds')
+   }
++  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
++  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+ 
+-  var yp = y.clone();
+-  var xp = x.clone();
++  // Are we oob?
++  if (end > this.length) end = this.length
++  if (target.length - targetStart < end - start) {
++    end = target.length - targetStart + start
++  }
+ 
+-  while (x.cmpn(0) !== 0) {
+-    while (x.isEven()) {
+-      x.ishrn(1);
+-      if (A.isEven() && B.isEven()) {
+-        A.ishrn(1);
+-        B.ishrn(1);
+-      } else {
+-        A.iadd(yp).ishrn(1);
+-        B.isub(xp).ishrn(1);
+-      }
+-    }
++  var len = end - start
++  var i
+ 
+-    while (y.isEven()) {
+-      y.ishrn(1);
+-      if (C.isEven() && D.isEven()) {
+-        C.ishrn(1);
+-        D.ishrn(1);
+-      } else {
+-        C.iadd(yp).ishrn(1);
+-        D.isub(xp).ishrn(1);
+-      }
++  if (this === target && start < targetStart && targetStart < end) {
++    // descending copy from end
++    for (i = len - 1; i >= 0; --i) {
++      target[i + targetStart] = this[i + start]
+     }
+-
+-    if (x.cmp(y) >= 0) {
+-      x.isub(y);
+-      A.isub(C);
+-      B.isub(D);
+-    } else {
+-      y.isub(x);
+-      C.isub(A);
+-      D.isub(B);
++  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
++    // ascending copy from start
++    for (i = 0; i < len; ++i) {
++      target[i + targetStart] = this[i + start]
+     }
++  } else {
++    Uint8Array.prototype.set.call(
++      target,
++      this.subarray(start, start + len),
++      targetStart
++    )
+   }
+ 
+-  return {
+-    a: C,
+-    b: D,
+-    gcd: y.ishln(g)
+-  };
+-};
++  return len
++}
+ 
+-// This is reduced incarnation of the binary EEA
+-// above, designated to invert members of the
+-// _prime_ fields F(p) at a maximal speed
+-BN.prototype._invmp = function _invmp(p) {
+-  assert(!p.sign);
+-  assert(p.cmpn(0) !== 0);
++// Usage:
++//    buffer.fill(number[, offset[, end]])
++//    buffer.fill(buffer[, offset[, end]])
++//    buffer.fill(string[, offset[, end]][, encoding])
++Buffer.prototype.fill = function fill (val, start, end, encoding) {
++  // Handle string cases:
++  if (typeof val === 'string') {
++    if (typeof start === 'string') {
++      encoding = start
++      start = 0
++      end = this.length
++    } else if (typeof end === 'string') {
++      encoding = end
++      end = this.length
++    }
++    if (val.length === 1) {
++      var code = val.charCodeAt(0)
++      if (code < 256) {
++        val = code
++      }
++    }
++    if (encoding !== undefined && typeof encoding !== 'string') {
++      throw new TypeError('encoding must be a string')
++    }
++    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
++      throw new TypeError('Unknown encoding: ' + encoding)
++    }
++  } else if (typeof val === 'number') {
++    val = val & 255
++  }
+ 
+-  var a = this;
+-  var b = p.clone();
++  // Invalid ranges are not set to a default, so can range check early.
++  if (start < 0 || this.length < start || this.length < end) {
++    throw new RangeError('Out of range index')
++  }
+ 
+-  if (a.sign)
+-    a = a.mod(p);
+-  else
+-    a = a.clone();
++  if (end <= start) {
++    return this
++  }
+ 
+-  var x1 = new BN(1);
+-  var x2 = new BN(0);
++  start = start >>> 0
++  end = end === undefined ? this.length : end >>> 0
+ 
+-  var delta = b.clone();
++  if (!val) val = 0
+ 
+-  while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
+-    while (a.isEven()) {
+-      a.ishrn(1);
+-      if (x1.isEven())
+-        x1.ishrn(1);
+-      else
+-        x1.iadd(delta).ishrn(1);
++  var i
++  if (typeof val === 'number') {
++    for (i = start; i < end; ++i) {
++      this[i] = val
+     }
+-    while (b.isEven()) {
+-      b.ishrn(1);
+-      if (x2.isEven())
+-        x2.ishrn(1);
+-      else
+-        x2.iadd(delta).ishrn(1);
+-    }
+-    if (a.cmp(b) >= 0) {
+-      a.isub(b);
+-      x1.isub(x2);
+-    } else {
+-      b.isub(a);
+-      x2.isub(x1);
++  } else {
++    var bytes = Buffer.isBuffer(val)
++      ? val
++      : utf8ToBytes(new Buffer(val, encoding).toString())
++    var len = bytes.length
++    for (i = 0; i < end - start; ++i) {
++      this[i + start] = bytes[i % len]
+     }
+   }
+-  if (a.cmpn(1) === 0)
+-    return x1;
+-  else
+-    return x2;
+-};
+ 
+-BN.prototype.gcd = function gcd(num) {
+-  if (this.cmpn(0) === 0)
+-    return num.clone();
+-  if (num.cmpn(0) === 0)
+-    return this.clone();
++  return this
++}
+ 
+-  var a = this.clone();
+-  var b = num.clone();
+-  a.sign = false;
+-  b.sign = false;
++// HELPER FUNCTIONS
++// ================
+ 
+-  // Remove common factor of two
+-  for (var shift = 0; a.isEven() && b.isEven(); shift++) {
+-    a.ishrn(1);
+-    b.ishrn(1);
++var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
++
++function base64clean (str) {
++  // Node strips out invalid characters like \n and \t from the string, base64-js does not
++  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
++  // Node converts strings with length < 2 to ''
++  if (str.length < 2) return ''
++  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
++  while (str.length % 4 !== 0) {
++    str = str + '='
+   }
++  return str
++}
+ 
+-  do {
+-    while (a.isEven())
+-      a.ishrn(1);
+-    while (b.isEven())
+-      b.ishrn(1);
++function stringtrim (str) {
++  if (str.trim) return str.trim()
++  return str.replace(/^\s+|\s+$/g, '')
++}
+ 
+-    var r = a.cmp(b);
+-    if (r < 0) {
+-      // Swap `a` and `b` to make `a` always bigger than `b`
+-      var t = a;
+-      a = b;
+-      b = t;
+-    } else if (r === 0 || b.cmpn(1) === 0) {
+-      break;
+-    }
++function toHex (n) {
++  if (n < 16) return '0' + n.toString(16)
++  return n.toString(16)
++}
+ 
+-    a.isub(b);
+-  } while (true);
++function utf8ToBytes (string, units) {
++  units = units || Infinity
++  var codePoint
++  var length = string.length
++  var leadSurrogate = null
++  var bytes = []
+ 
+-  return b.ishln(shift);
+-};
++  for (var i = 0; i < length; ++i) {
++    codePoint = string.charCodeAt(i)
+ 
+-// Invert number in the field F(num)
+-BN.prototype.invm = function invm(num) {
+-  return this.egcd(num).a.mod(num);
+-};
++    // is surrogate component
++    if (codePoint > 0xD7FF && codePoint < 0xE000) {
++      // last char was a lead
++      if (!leadSurrogate) {
++        // no lead yet
++        if (codePoint > 0xDBFF) {
++          // unexpected trail
++          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++          continue
++        } else if (i + 1 === length) {
++          // unpaired lead
++          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++          continue
++        }
+ 
+-BN.prototype.isEven = function isEven() {
+-  return (this.words[0] & 1) === 0;
+-};
++        // valid lead
++        leadSurrogate = codePoint
+ 
+-BN.prototype.isOdd = function isOdd() {
+-  return (this.words[0] & 1) === 1;
+-};
++        continue
++      }
+ 
+-// And first word and num
+-BN.prototype.andln = function andln(num) {
+-  return this.words[0] & num;
+-};
++      // 2 leads in a row
++      if (codePoint < 0xDC00) {
++        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++        leadSurrogate = codePoint
++        continue
++      }
+ 
+-// Increment at the bit position in-line
+-BN.prototype.bincn = function bincn(bit) {
+-  assert(typeof bit === 'number');
+-  var r = bit % 26;
+-  var s = (bit - r) / 26;
+-  var q = 1 << r;
++      // valid surrogate pair
++      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
++    } else if (leadSurrogate) {
++      // valid bmp char, but last char was a lead
++      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++    }
+ 
+-  // Fast case: bit is much higher than all existing words
+-  if (this.length <= s) {
+-    for (var i = this.length; i < s + 1; i++)
+-      this.words[i] = 0;
+-    this.words[s] |= q;
+-    this.length = s + 1;
+-    return this;
+-  }
++    leadSurrogate = null
+ 
+-  // Add bit and propagate, if needed
+-  var carry = q;
+-  for (var i = s; carry !== 0 && i < this.length; i++) {
+-    var w = this.words[i];
+-    w += carry;
+-    carry = w >>> 26;
+-    w &= 0x3ffffff;
+-    this.words[i] = w;
+-  }
+-  if (carry !== 0) {
+-    this.words[i] = carry;
+-    this.length++;
++    // encode utf8
++    if (codePoint < 0x80) {
++      if ((units -= 1) < 0) break
++      bytes.push(codePoint)
++    } else if (codePoint < 0x800) {
++      if ((units -= 2) < 0) break
++      bytes.push(
++        codePoint >> 0x6 | 0xC0,
++        codePoint & 0x3F | 0x80
++      )
++    } else if (codePoint < 0x10000) {
++      if ((units -= 3) < 0) break
++      bytes.push(
++        codePoint >> 0xC | 0xE0,
++        codePoint >> 0x6 & 0x3F | 0x80,
++        codePoint & 0x3F | 0x80
++      )
++    } else if (codePoint < 0x110000) {
++      if ((units -= 4) < 0) break
++      bytes.push(
++        codePoint >> 0x12 | 0xF0,
++        codePoint >> 0xC & 0x3F | 0x80,
++        codePoint >> 0x6 & 0x3F | 0x80,
++        codePoint & 0x3F | 0x80
++      )
++    } else {
++      throw new Error('Invalid code point')
++    }
+   }
+-  return this;
+-};
+ 
+-BN.prototype.cmpn = function cmpn(num) {
+-  var sign = num < 0;
+-  if (sign)
+-    num = -num;
++  return bytes
++}
+ 
+-  if (this.sign && !sign)
+-    return -1;
+-  else if (!this.sign && sign)
+-    return 1;
++function asciiToBytes (str) {
++  var byteArray = []
++  for (var i = 0; i < str.length; ++i) {
++    // Node's code seems to be doing this and not & 0x7F..
++    byteArray.push(str.charCodeAt(i) & 0xFF)
++  }
++  return byteArray
++}
+ 
+-  num &= 0x3ffffff;
+-  this.strip();
++function utf16leToBytes (str, units) {
++  var c, hi, lo
++  var byteArray = []
++  for (var i = 0; i < str.length; ++i) {
++    if ((units -= 2) < 0) break
+ 
+-  var res;
+-  if (this.length > 1) {
+-    res = 1;
+-  } else {
+-    var w = this.words[0];
+-    res = w === num ? 0 : w < num ? -1 : 1;
++    c = str.charCodeAt(i)
++    hi = c >> 8
++    lo = c % 256
++    byteArray.push(lo)
++    byteArray.push(hi)
+   }
+-  if (this.sign)
+-    res = -res;
+-  return res;
+-};
+ 
+-// Compare two numbers and return:
+-// 1 - if `this` > `num`
+-// 0 - if `this` == `num`
+-// -1 - if `this` < `num`
+-BN.prototype.cmp = function cmp(num) {
+-  if (this.sign && !num.sign)
+-    return -1;
+-  else if (!this.sign && num.sign)
+-    return 1;
++  return byteArray
++}
+ 
+-  var res = this.ucmp(num);
+-  if (this.sign)
+-    return -res;
+-  else
+-    return res;
+-};
++function base64ToBytes (str) {
++  return base64.toByteArray(base64clean(str))
++}
+ 
+-// Unsigned comparison
+-BN.prototype.ucmp = function ucmp(num) {
+-  // At this point both numbers have the same sign
+-  if (this.length > num.length)
+-    return 1;
+-  else if (this.length < num.length)
+-    return -1;
++function blitBuffer (src, dst, offset, length) {
++  for (var i = 0; i < length; ++i) {
++    if ((i + offset >= dst.length) || (i >= src.length)) break
++    dst[i + offset] = src[i]
++  }
++  return i
++}
+ 
+-  var res = 0;
+-  for (var i = this.length - 1; i >= 0; i--) {
+-    var a = this.words[i];
+-    var b = num.words[i];
++function isnan (val) {
++  return val !== val // eslint-disable-line no-self-compare
++}
+ 
+-    if (a === b)
+-      continue;
+-    if (a < b)
+-      res = -1;
+-    else if (a > b)
+-      res = 1;
+-    break;
+-  }
+-  return res;
+-};
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"base64-js":38,"ieee754":113,"isarray":39}],38:[function(require,module,exports){
++'use strict'
+ 
+-//
+-// A reduce context, could be using montgomery or something better, depending
+-// on the `m` itself.
+-//
+-BN.red = function red(num) {
+-  return new Red(num);
+-};
++exports.toByteArray = toByteArray
++exports.fromByteArray = fromByteArray
+ 
+-BN.prototype.toRed = function toRed(ctx) {
+-  assert(!this.red, 'Already a number in reduction context');
+-  assert(!this.sign, 'red works only with positives');
+-  return ctx.convertTo(this)._forceRed(ctx);
+-};
++var lookup = []
++var revLookup = []
++var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+ 
+-BN.prototype.fromRed = function fromRed() {
+-  assert(this.red, 'fromRed works only with numbers in reduction context');
+-  return this.red.convertFrom(this);
+-};
++function init () {
++  var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
++  for (var i = 0, len = code.length; i < len; ++i) {
++    lookup[i] = code[i]
++    revLookup[code.charCodeAt(i)] = i
++  }
+ 
+-BN.prototype._forceRed = function _forceRed(ctx) {
+-  this.red = ctx;
+-  return this;
+-};
++  revLookup['-'.charCodeAt(0)] = 62
++  revLookup['_'.charCodeAt(0)] = 63
++}
+ 
+-BN.prototype.forceRed = function forceRed(ctx) {
+-  assert(!this.red, 'Already a number in reduction context');
+-  return this._forceRed(ctx);
+-};
++init()
+ 
+-BN.prototype.redAdd = function redAdd(num) {
+-  assert(this.red, 'redAdd works only with red numbers');
+-  return this.red.add(this, num);
+-};
++function toByteArray (b64) {
++  var i, j, l, tmp, placeHolders, arr
++  var len = b64.length
+ 
+-BN.prototype.redIAdd = function redIAdd(num) {
+-  assert(this.red, 'redIAdd works only with red numbers');
+-  return this.red.iadd(this, num);
+-};
++  if (len % 4 > 0) {
++    throw new Error('Invalid string. Length must be a multiple of 4')
++  }
+ 
+-BN.prototype.redSub = function redSub(num) {
+-  assert(this.red, 'redSub works only with red numbers');
+-  return this.red.sub(this, num);
+-};
++  // the number of equal signs (place holders)
++  // if there are two placeholders, than the two characters before it
++  // represent one byte
++  // if there is only one, then the three characters before it represent 2 bytes
++  // this is just a cheap hack to not do indexOf twice
++  placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
+ 
+-BN.prototype.redISub = function redISub(num) {
+-  assert(this.red, 'redISub works only with red numbers');
+-  return this.red.isub(this, num);
+-};
++  // base64 is 4/3 + up to two characters of the original data
++  arr = new Arr(len * 3 / 4 - placeHolders)
+ 
+-BN.prototype.redShl = function redShl(num) {
+-  assert(this.red, 'redShl works only with red numbers');
+-  return this.red.shl(this, num);
+-};
++  // if there are placeholders, only get up to the last complete 4 chars
++  l = placeHolders > 0 ? len - 4 : len
+ 
+-BN.prototype.redMul = function redMul(num) {
+-  assert(this.red, 'redMul works only with red numbers');
+-  this.red._verify2(this, num);
+-  return this.red.mul(this, num);
+-};
++  var L = 0
+ 
+-BN.prototype.redIMul = function redIMul(num) {
+-  assert(this.red, 'redMul works only with red numbers');
+-  this.red._verify2(this, num);
+-  return this.red.imul(this, num);
+-};
++  for (i = 0, j = 0; i < l; i += 4, j += 3) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
++    arr[L++] = (tmp >> 16) & 0xFF
++    arr[L++] = (tmp >> 8) & 0xFF
++    arr[L++] = tmp & 0xFF
++  }
+ 
+-BN.prototype.redSqr = function redSqr() {
+-  assert(this.red, 'redSqr works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.sqr(this);
+-};
++  if (placeHolders === 2) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
++    arr[L++] = tmp & 0xFF
++  } else if (placeHolders === 1) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
++    arr[L++] = (tmp >> 8) & 0xFF
++    arr[L++] = tmp & 0xFF
++  }
+ 
+-BN.prototype.redISqr = function redISqr() {
+-  assert(this.red, 'redISqr works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.isqr(this);
+-};
++  return arr
++}
+ 
+-// Square root over p
+-BN.prototype.redSqrt = function redSqrt() {
+-  assert(this.red, 'redSqrt works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.sqrt(this);
+-};
++function tripletToBase64 (num) {
++  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
++}
+ 
+-BN.prototype.redInvm = function redInvm() {
+-  assert(this.red, 'redInvm works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.invm(this);
+-};
++function encodeChunk (uint8, start, end) {
++  var tmp
++  var output = []
++  for (var i = start; i < end; i += 3) {
++    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
++    output.push(tripletToBase64(tmp))
++  }
++  return output.join('')
++}
+ 
+-// Return negative clone of `this` % `red modulo`
+-BN.prototype.redNeg = function redNeg() {
+-  assert(this.red, 'redNeg works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.neg(this);
+-};
++function fromByteArray (uint8) {
++  var tmp
++  var len = uint8.length
++  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
++  var output = ''
++  var parts = []
++  var maxChunkLength = 16383 // must be multiple of 3
+ 
+-BN.prototype.redPow = function redPow(num) {
+-  assert(this.red && !num.red, 'redPow(normalNum)');
+-  this.red._verify1(this);
+-  return this.red.pow(this, num);
+-};
++  // go through the array every three bytes, we'll deal with trailing stuff later
++  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
++    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
++  }
+ 
+-// Prime numbers with efficient reduction
+-var primes = {
+-  k256: null,
+-  p224: null,
+-  p192: null,
+-  p25519: null
+-};
++  // pad the end with zeros, but make sure to not forget the extra bytes
++  if (extraBytes === 1) {
++    tmp = uint8[len - 1]
++    output += lookup[tmp >> 2]
++    output += lookup[(tmp << 4) & 0x3F]
++    output += '=='
++  } else if (extraBytes === 2) {
++    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
++    output += lookup[tmp >> 10]
++    output += lookup[(tmp >> 4) & 0x3F]
++    output += lookup[(tmp << 2) & 0x3F]
++    output += '='
++  }
+ 
+-// Pseudo-Mersenne prime
+-function MPrime(name, p) {
+-  // P = 2 ^ N - K
+-  this.name = name;
+-  this.p = new BN(p, 16);
+-  this.n = this.p.bitLength();
+-  this.k = new BN(1).ishln(this.n).isub(this.p);
++  parts.push(output)
+ 
+-  this.tmp = this._tmp();
++  return parts.join('')
+ }
+ 
+-MPrime.prototype._tmp = function _tmp() {
+-  var tmp = new BN(null);
+-  tmp.words = new Array(Math.ceil(this.n / 13));
+-  return tmp;
++},{}],39:[function(require,module,exports){
++var toString = {}.toString;
++
++module.exports = Array.isArray || function (arr) {
++  return toString.call(arr) == '[object Array]';
+ };
+ 
+-MPrime.prototype.ireduce = function ireduce(num) {
+-  // Assumes that `num` is less than `P^2`
+-  // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
+-  var r = num;
+-  var rlen;
++},{}],40:[function(require,module,exports){
++'use strict'
+ 
+-  do {
+-    this.split(r, this.tmp);
+-    r = this.imulK(r);
+-    r = r.iadd(this.tmp);
+-    rlen = r.bitLength();
+-  } while (rlen > this.n);
++var monotoneTriangulate = require('./lib/monotone')
++var makeIndex = require('./lib/triangulation')
++var delaunayFlip = require('./lib/delaunay')
++var filterTriangulation = require('./lib/filter')
+ 
+-  var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
+-  if (cmp === 0) {
+-    r.words[0] = 0;
+-    r.length = 1;
+-  } else if (cmp > 0) {
+-    r.isub(this.p);
+-  } else {
+-    r.strip();
+-  }
++module.exports = cdt2d
+ 
+-  return r;
+-};
++function canonicalizeEdge(e) {
++  return [Math.min(e[0], e[1]), Math.max(e[0], e[1])]
++}
+ 
+-MPrime.prototype.split = function split(input, out) {
+-  input.ishrn(this.n, 0, out);
+-};
++function compareEdge(a, b) {
++  return a[0]-b[0] || a[1]-b[1]
++}
+ 
+-MPrime.prototype.imulK = function imulK(num) {
+-  return num.imul(this.k);
+-};
++function canonicalizeEdges(edges) {
++  return edges.map(canonicalizeEdge).sort(compareEdge)
++}
+ 
+-function K256() {
+-  MPrime.call(
+-    this,
+-    'k256',
+-    'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
++function getDefault(options, property, dflt) {
++  if(property in options) {
++    return options[property]
++  }
++  return dflt
+ }
+-inherits(K256, MPrime);
+ 
+-K256.prototype.split = function split(input, output) {
+-  // 256 = 9 * 26 + 22
+-  var mask = 0x3fffff;
++function cdt2d(points, edges, options) {
+ 
+-  var outLen = Math.min(input.length, 9);
+-  for (var i = 0; i < outLen; i++)
+-    output.words[i] = input.words[i];
+-  output.length = outLen;
+-
+-  if (input.length <= 9) {
+-    input.words[0] = 0;
+-    input.length = 1;
+-    return;
++  if(!Array.isArray(edges)) {
++    options = edges || {}
++    edges = []
++  } else {
++    options = options || {}
++    edges = edges || []
+   }
+ 
+-  // Shift by 9 limbs
+-  var prev = input.words[9];
+-  output.words[output.length++] = prev & mask;
++  //Parse out options
++  var delaunay = !!getDefault(options, 'delaunay', true)
++  var interior = !!getDefault(options, 'interior', true)
++  var exterior = !!getDefault(options, 'exterior', true)
++  var infinity = !!getDefault(options, 'infinity', false)
+ 
+-  for (var i = 10; i < input.length; i++) {
+-    var next = input.words[i];
+-    input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
+-    prev = next;
++  //Handle trivial case
++  if((!interior && !exterior) || points.length === 0) {
++    return []
+   }
+-  input.words[i - 10] = prev >>> 22;
+-  input.length -= 9;
+-};
+ 
+-K256.prototype.imulK = function imulK(num) {
+-  // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
+-  num.words[num.length] = 0;
+-  num.words[num.length + 1] = 0;
+-  num.length += 2;
++  //Construct initial triangulation
++  var cells = monotoneTriangulate(points, edges)
+ 
+-  // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
+-  var hi;
+-  var lo = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var w = num.words[i];
+-    hi = w * 0x40;
+-    lo += w * 0x3d1;
+-    hi += (lo / 0x4000000) | 0;
+-    lo &= 0x3ffffff;
++  //If delaunay refinement needed, then improve quality by edge flipping
++  if(delaunay || interior !== exterior || infinity) {
+ 
+-    num.words[i] = lo;
++    //Index all of the cells to support fast neighborhood queries
++    var triangulation = makeIndex(points.length, canonicalizeEdges(edges))
++    for(var i=0; i<cells.length; ++i) {
++      var f = cells[i]
++      triangulation.addTriangle(f[0], f[1], f[2])
++    }
+ 
+-    lo = hi;
+-  }
++    //Run edge flipping
++    if(delaunay) {
++      delaunayFlip(points, triangulation)
++    }
+ 
+-  // Fast length reduction
+-  if (num.words[num.length - 1] === 0) {
+-    num.length--;
+-    if (num.words[num.length - 1] === 0)
+-      num.length--;
++    //Filter points
++    if(!exterior) {
++      return filterTriangulation(triangulation, -1)
++    } else if(!interior) {
++      return filterTriangulation(triangulation,  1, infinity)
++    } else if(infinity) {
++      return filterTriangulation(triangulation, 0, infinity)
++    } else {
++      return triangulation.cells()
++    }
++    
++  } else {
++    return cells
+   }
+-  return num;
+-};
+-
+-function P224() {
+-  MPrime.call(
+-    this,
+-    'p224',
+-    'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
+ }
+-inherits(P224, MPrime);
+ 
+-function P192() {
+-  MPrime.call(
+-    this,
+-    'p192',
+-    'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
+-}
+-inherits(P192, MPrime);
++},{"./lib/delaunay":41,"./lib/filter":42,"./lib/monotone":43,"./lib/triangulation":44}],41:[function(require,module,exports){
++'use strict'
+ 
+-function P25519() {
+-  // 2 ^ 255 - 19
+-  MPrime.call(
+-    this,
+-    '25519',
+-    '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
+-}
+-inherits(P25519, MPrime);
++var inCircle = require('robust-in-sphere')[4]
++var bsearch = require('binary-search-bounds')
+ 
+-P25519.prototype.imulK = function imulK(num) {
+-  // K = 0x13
+-  var carry = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var hi = num.words[i] * 0x13 + carry;
+-    var lo = hi & 0x3ffffff;
+-    hi >>>= 26;
++module.exports = delaunayRefine
+ 
+-    num.words[i] = lo;
+-    carry = hi;
+-  }
+-  if (carry !== 0)
+-    num.words[num.length++] = carry;
+-  return num;
+-};
++function testFlip(points, triangulation, stack, a, b, x) {
++  var y = triangulation.opposite(a, b)
+ 
+-// Exported mostly for testing purposes, use plain name instead
+-BN._prime = function prime(name) {
+-  // Cached version of prime
+-  if (primes[name])
+-    return primes[name];
++  //Test boundary edge
++  if(y < 0) {
++    return
++  }
+ 
+-  var prime;
+-  if (name === 'k256')
+-    prime = new K256();
+-  else if (name === 'p224')
+-    prime = new P224();
+-  else if (name === 'p192')
+-    prime = new P192();
+-  else if (name === 'p25519')
+-    prime = new P25519();
+-  else
+-    throw new Error('Unknown prime ' + name);
+-  primes[name] = prime;
++  //Swap edge if order flipped
++  if(b < a) {
++    var tmp = a
++    a = b
++    b = tmp
++    tmp = x
++    x = y
++    y = tmp
++  }
+ 
+-  return prime;
+-};
++  //Test if edge is constrained
++  if(triangulation.isConstraint(a, b)) {
++    return
++  }
+ 
+-//
+-// Base reduction engine
+-//
+-function Red(m) {
+-  if (typeof m === 'string') {
+-    var prime = BN._prime(m);
+-    this.m = prime.p;
+-    this.prime = prime;
+-  } else {
+-    this.m = m;
+-    this.prime = null;
++  //Test if edge is delaunay
++  if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
++    stack.push(a, b)
+   }
+ }
+ 
+-Red.prototype._verify1 = function _verify1(a) {
+-  assert(!a.sign, 'red works only with positives');
+-  assert(a.red, 'red works only with red numbers');
+-};
++//Assume edges are sorted lexicographically
++function delaunayRefine(points, triangulation) {
++  var stack = []
+ 
+-Red.prototype._verify2 = function _verify2(a, b) {
+-  assert(!a.sign && !b.sign, 'red works only with positives');
+-  assert(a.red && a.red === b.red,
+-         'red works only with red numbers');
+-};
++  var numPoints = points.length
++  var stars = triangulation.stars
++  for(var a=0; a<numPoints; ++a) {
++    var star = stars[a]
++    for(var j=1; j<star.length; j+=2) {
++      var b = star[j]
+ 
+-Red.prototype.imod = function imod(a) {
+-  if (this.prime)
+-    return this.prime.ireduce(a)._forceRed(this);
+-  return a.mod(this.m)._forceRed(this);
+-};
++      //If order is not consistent, then skip edge
++      if(b < a) {
++        continue
++      }
+ 
+-Red.prototype.neg = function neg(a) {
+-  var r = a.clone();
+-  r.sign = !r.sign;
+-  return r.iadd(this.m)._forceRed(this);
+-};
++      //Check if edge is constrained
++      if(triangulation.isConstraint(a, b)) {
++        continue
++      }
+ 
+-Red.prototype.add = function add(a, b) {
+-  this._verify2(a, b);
++      //Find opposite edge
++      var x = star[j-1], y = -1
++      for(var k=1; k<star.length; k+=2) {
++        if(star[k-1] === b) {
++          y = star[k]
++          break
++        }
++      }
+ 
+-  var res = a.add(b);
+-  if (res.cmp(this.m) >= 0)
+-    res.isub(this.m);
+-  return res._forceRed(this);
+-};
++      //If this is a boundary edge, don't flip it
++      if(y < 0) {
++        continue
++      }
+ 
+-Red.prototype.iadd = function iadd(a, b) {
+-  this._verify2(a, b);
++      //If edge is in circle, flip it
++      if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
++        stack.push(a, b)
++      }
++    }
++  }
+ 
+-  var res = a.iadd(b);
+-  if (res.cmp(this.m) >= 0)
+-    res.isub(this.m);
+-  return res;
+-};
++  while(stack.length > 0) {
++    var b = stack.pop()
++    var a = stack.pop()
+ 
+-Red.prototype.sub = function sub(a, b) {
+-  this._verify2(a, b);
++    //Find opposite pairs
++    var x = -1, y = -1
++    var star = stars[a]
++    for(var i=1; i<star.length; i+=2) {
++      var s = star[i-1]
++      var t = star[i]
++      if(s === b) {
++        y = t
++      } else if(t === b) {
++        x = s
++      }
++    }
+ 
+-  var res = a.sub(b);
+-  if (res.cmpn(0) < 0)
+-    res.iadd(this.m);
+-  return res._forceRed(this);
+-};
++    //If x/y are both valid then skip edge
++    if(x < 0 || y < 0) {
++      continue
++    }
+ 
+-Red.prototype.isub = function isub(a, b) {
+-  this._verify2(a, b);
++    //If edge is now delaunay, then don't flip it
++    if(inCircle(points[a], points[b], points[x], points[y]) >= 0) {
++      continue
++    }
+ 
+-  var res = a.isub(b);
+-  if (res.cmpn(0) < 0)
+-    res.iadd(this.m);
+-  return res;
+-};
++    //Flip the edge
++    triangulation.flip(a, b)
+ 
+-Red.prototype.shl = function shl(a, num) {
+-  this._verify1(a);
+-  return this.imod(a.shln(num));
+-};
++    //Test flipping neighboring edges
++    testFlip(points, triangulation, stack, x, a, y)
++    testFlip(points, triangulation, stack, a, y, x)
++    testFlip(points, triangulation, stack, y, b, x)
++    testFlip(points, triangulation, stack, b, x, y)
++  }
++}
+ 
+-Red.prototype.imul = function imul(a, b) {
+-  this._verify2(a, b);
+-  return this.imod(a.imul(b));
+-};
++},{"binary-search-bounds":45,"robust-in-sphere":139}],42:[function(require,module,exports){
++'use strict'
+ 
+-Red.prototype.mul = function mul(a, b) {
+-  this._verify2(a, b);
+-  return this.imod(a.mul(b));
+-};
++var bsearch = require('binary-search-bounds')
+ 
+-Red.prototype.isqr = function isqr(a) {
+-  return this.imul(a, a);
+-};
++module.exports = classifyFaces
+ 
+-Red.prototype.sqr = function sqr(a) {
+-  return this.mul(a, a);
+-};
++function FaceIndex(cells, neighbor, constraint, flags, active, next, boundary) {
++  this.cells       = cells
++  this.neighbor    = neighbor
++  this.flags       = flags
++  this.constraint  = constraint
++  this.active      = active
++  this.next        = next
++  this.boundary    = boundary
++}
+ 
+-Red.prototype.sqrt = function sqrt(a) {
+-  if (a.cmpn(0) === 0)
+-    return a.clone();
++var proto = FaceIndex.prototype
+ 
+-  var mod3 = this.m.andln(3);
+-  assert(mod3 % 2 === 1);
++function compareCell(a, b) {
++  return a[0] - b[0] ||
++         a[1] - b[1] ||
++         a[2] - b[2]
++}
+ 
+-  // Fast case
+-  if (mod3 === 3) {
+-    var pow = this.m.add(new BN(1)).ishrn(2);
+-    var r = this.pow(a, pow);
+-    return r;
++proto.locate = (function() {
++  var key = [0,0,0]
++  return function(a, b, c) {
++    var x = a, y = b, z = c
++    if(b < c) {
++      if(b < a) {
++        x = b
++        y = c
++        z = a
++      }
++    } else if(c < a) {
++      x = c
++      y = a
++      z = b
++    }
++    if(x < 0) {
++      return -1
++    }
++    key[0] = x
++    key[1] = y
++    key[2] = z
++    return bsearch.eq(this.cells, key, compareCell)
+   }
++})()
+ 
+-  // Tonelli-Shanks algorithm (Totally unoptimized and slow)
+-  //
+-  // Find Q and S, that Q * 2 ^ S = (P - 1)
+-  var q = this.m.subn(1);
+-  var s = 0;
+-  while (q.cmpn(0) !== 0 && q.andln(1) === 0) {
+-    s++;
+-    q.ishrn(1);
++function indexCells(triangulation, infinity) {
++  //First get cells and canonicalize
++  var cells = triangulation.cells()
++  var nc = cells.length
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    var x = c[0], y = c[1], z = c[2]
++    if(y < z) {
++      if(y < x) {
++        c[0] = y
++        c[1] = z
++        c[2] = x
++      }
++    } else if(z < x) {
++      c[0] = z
++      c[1] = x
++      c[2] = y
++    }
+   }
+-  assert(q.cmpn(0) !== 0);
+-
+-  var one = new BN(1).toRed(this);
+-  var nOne = one.redNeg();
+-
+-  // Find quadratic non-residue
+-  // NOTE: Max is such because of generalized Riemann hypothesis.
+-  var lpow = this.m.subn(1).ishrn(1);
+-  var z = this.m.bitLength();
+-  z = new BN(2 * z * z).toRed(this);
+-  while (this.pow(z, lpow).cmp(nOne) !== 0)
+-    z.redIAdd(nOne);
+-
+-  var c = this.pow(z, q);
+-  var r = this.pow(a, q.addn(1).ishrn(1));
+-  var t = this.pow(a, q);
+-  var m = s;
+-  while (t.cmp(one) !== 0) {
+-    var tmp = t;
+-    for (var i = 0; tmp.cmp(one) !== 0; i++)
+-      tmp = tmp.redSqr();
+-    assert(i < m);
+-    var b = this.pow(c, new BN(1).ishln(m - i - 1));
++  cells.sort(compareCell)
+ 
+-    r = r.redMul(b);
+-    c = b.redSqr();
+-    t = t.redMul(c);
+-    m = i;
++  //Initialize flag array
++  var flags = new Array(nc)
++  for(var i=0; i<flags.length; ++i) {
++    flags[i] = 0
+   }
+ 
+-  return r;
+-};
+-
+-Red.prototype.invm = function invm(a) {
+-  var inv = a._invmp(this.m);
+-  if (inv.sign) {
+-    inv.sign = false;
+-    return this.imod(inv).redNeg();
+-  } else {
+-    return this.imod(inv);
++  //Build neighbor index, initialize queues
++  var active = []
++  var next   = []
++  var neighbor = new Array(3*nc)
++  var constraint = new Array(3*nc)
++  var boundary = null
++  if(infinity) {
++    boundary = []
+   }
+-};
+-
+-Red.prototype.pow = function pow(a, num) {
+-  var w = [];
+-
+-  if (num.cmpn(0) === 0)
+-    return new BN(1);
+-
+-  var q = num.clone();
++  var index = new FaceIndex(
++    cells,
++    neighbor,
++    constraint,
++    flags,
++    active,
++    next,
++    boundary)
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    for(var j=0; j<3; ++j) {
++      var x = c[j], y = c[(j+1)%3]
++      var a = neighbor[3*i+j] = index.locate(y, x, triangulation.opposite(y, x))
++      var b = constraint[3*i+j] = triangulation.isConstraint(x, y)
++      if(a < 0) {
++        if(b) {
++          next.push(i)
++        } else {
++          active.push(i)
++          flags[i] = 1
++        }
++        if(infinity) {
++          boundary.push([y, x, -1])
++        }
++      }
++    }
++  }
++  return index
++}
+ 
+-  while (q.cmpn(0) !== 0) {
+-    w.push(q.andln(1));
+-    q.ishrn(1);
++function filterCells(cells, flags, target) {
++  var ptr = 0
++  for(var i=0; i<cells.length; ++i) {
++    if(flags[i] === target) {
++      cells[ptr++] = cells[i]
++    }
+   }
++  cells.length = ptr
++  return cells
++}
+ 
+-  // Skip leading zeroes
+-  var res = a;
+-  for (var i = 0; i < w.length; i++, res = this.sqr(res))
+-    if (w[i] !== 0)
+-      break;
++function classifyFaces(triangulation, target, infinity) {
++  var index = indexCells(triangulation, infinity)
+ 
+-  if (++i < w.length) {
+-    for (var q = this.sqr(res); i < w.length; i++, q = this.sqr(q)) {
+-      if (w[i] === 0)
+-        continue;
+-      res = this.mul(res, q);
++  if(target === 0) {
++    if(infinity) {
++      return index.cells.concat(index.boundary)
++    } else {
++      return index.cells
+     }
+   }
+ 
+-  return res;
+-};
++  var side = 1
++  var active = index.active
++  var next = index.next
++  var flags = index.flags
++  var cells = index.cells
++  var constraint = index.constraint
++  var neighbor = index.neighbor
+ 
+-Red.prototype.convertTo = function convertTo(num) {
+-  var r = num.mod(this.m);
+-  if (r === num)
+-    return r.clone();
+-  else
+-    return r;
+-};
+-
+-Red.prototype.convertFrom = function convertFrom(num) {
+-  var res = num.clone();
+-  res.red = null;
+-  return res;
+-};
+-
+-//
+-// Montgomery method engine
+-//
+-
+-BN.mont = function mont(num) {
+-  return new Mont(num);
+-};
+-
+-function Mont(m) {
+-  Red.call(this, m);
+-
+-  this.shift = this.m.bitLength();
+-  if (this.shift % 26 !== 0)
+-    this.shift += 26 - (this.shift % 26);
+-  this.r = new BN(1).ishln(this.shift);
+-  this.r2 = this.imod(this.r.sqr());
+-  this.rinv = this.r._invmp(this.m);
+-
+-  this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
+-  this.minv.sign = true;
+-  this.minv = this.minv.mod(this.r);
+-}
+-inherits(Mont, Red);
+-
+-Mont.prototype.convertTo = function convertTo(num) {
+-  return this.imod(num.shln(this.shift));
+-};
++  while(active.length > 0 || next.length > 0) {
++    while(active.length > 0) {
++      var t = active.pop()
++      if(flags[t] === -side) {
++        continue
++      }
++      flags[t] = side
++      var c = cells[t]
++      for(var j=0; j<3; ++j) {
++        var f = neighbor[3*t+j]
++        if(f >= 0 && flags[f] === 0) {
++          if(constraint[3*t+j]) {
++            next.push(f)
++          } else {
++            active.push(f)
++            flags[f] = side
++          }
++        }
++      }
++    }
+ 
+-Mont.prototype.convertFrom = function convertFrom(num) {
+-  var r = this.imod(num.mul(this.rinv));
+-  r.red = null;
+-  return r;
+-};
++    //Swap arrays and loop
++    var tmp = next
++    next = active
++    active = tmp
++    next.length = 0
++    side = -side
++  }
+ 
+-Mont.prototype.imul = function imul(a, b) {
+-  if (a.cmpn(0) === 0 || b.cmpn(0) === 0) {
+-    a.words[0] = 0;
+-    a.length = 1;
+-    return a;
++  var result = filterCells(cells, flags, target)
++  if(infinity) {
++    return result.concat(index.boundary)
+   }
++  return result
++}
+ 
+-  var t = a.imul(b);
+-  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
+-  var u = t.isub(c).ishrn(this.shift);
+-  var res = u;
+-  if (u.cmp(this.m) >= 0)
+-    res = u.isub(this.m);
+-  else if (u.cmpn(0) < 0)
+-    res = u.iadd(this.m);
++},{"binary-search-bounds":45}],43:[function(require,module,exports){
++'use strict'
+ 
+-  return res._forceRed(this);
+-};
++var bsearch = require('binary-search-bounds')
++var orient = require('robust-orientation')[3]
+ 
+-Mont.prototype.mul = function mul(a, b) {
+-  if (a.cmpn(0) === 0 || b.cmpn(0) === 0)
+-    return new BN(0)._forceRed(this);
++var EVENT_POINT = 0
++var EVENT_END   = 1
++var EVENT_START = 2
+ 
+-  var t = a.mul(b);
+-  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
+-  var u = t.isub(c).ishrn(this.shift);
+-  var res = u;
+-  if (u.cmp(this.m) >= 0)
+-    res = u.isub(this.m);
+-  else if (u.cmpn(0) < 0)
+-    res = u.iadd(this.m);
++module.exports = monotoneTriangulate
+ 
+-  return res._forceRed(this);
+-};
++//A partial convex hull fragment, made of two unimonotone polygons
++function PartialHull(a, b, idx, lowerIds, upperIds) {
++  this.a = a
++  this.b = b
++  this.idx = idx
++  this.lowerIds = lowerIds
++  this.upperIds = upperIds
++}
+ 
+-Mont.prototype.invm = function invm(a) {
+-  // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
+-  var res = this.imod(a._invmp(this.m).mul(this.r2));
+-  return res._forceRed(this);
+-};
++//An event in the sweep line procedure
++function Event(a, b, type, idx) {
++  this.a    = a
++  this.b    = b
++  this.type = type
++  this.idx  = idx
++}
+ 
+-})(typeof module === 'undefined' || module, this);
++//This is used to compare events for the sweep line procedure
++// Points are:
++//  1. sorted lexicographically
++//  2. sorted by type  (point < end < start)
++//  3. segments sorted by winding order
++//  4. sorted by index
++function compareEvent(a, b) {
++  var d =
++    (a.a[0] - b.a[0]) ||
++    (a.a[1] - b.a[1]) ||
++    (a.type - b.type)
++  if(d) { return d }
++  if(a.type !== EVENT_POINT) {
++    d = orient(a.a, a.b, b.b)
++    if(d) { return d }
++  }
++  return a.idx - b.idx
++}
+ 
+-},{}],39:[function(require,module,exports){
+-'use strict'
++function testPoint(hull, p) {
++  return orient(hull.a, hull.b, p)
++}
+ 
+-var bnsign = require('./lib/bn-sign')
++function addPoint(cells, hulls, points, p, idx) {
++  var lo = bsearch.lt(hulls, p, testPoint)
++  var hi = bsearch.gt(hulls, p, testPoint)
++  for(var i=lo; i<hi; ++i) {
++    var hull = hulls[i]
+ 
+-module.exports = sign
++    //Insert p into lower hull
++    var lowerIds = hull.lowerIds
++    var m = lowerIds.length
++    while(m > 1 && orient(
++        points[lowerIds[m-2]],
++        points[lowerIds[m-1]],
++        p) > 0) {
++      cells.push(
++        [lowerIds[m-1],
++         lowerIds[m-2],
++         idx])
++      m -= 1
++    }
++    lowerIds.length = m
++    lowerIds.push(idx)
+ 
+-function sign(x) {
+-  return bnsign(x[0]) * bnsign(x[1])
++    //Insert p into upper hull
++    var upperIds = hull.upperIds
++    var m = upperIds.length
++    while(m > 1 && orient(
++        points[upperIds[m-2]],
++        points[upperIds[m-1]],
++        p) < 0) {
++      cells.push(
++        [upperIds[m-2],
++         upperIds[m-1],
++         idx])
++      m -= 1
++    }
++    upperIds.length = m
++    upperIds.push(idx)
++  }
+ }
+ 
+-},{"./lib/bn-sign":30}],40:[function(require,module,exports){
+-'use strict'
++function findSplit(hull, edge) {
++  var d
++  if(hull.a[0] < edge.a[0]) {
++    d = orient(hull.a, hull.b, edge.a)
++  } else {
++    d = orient(edge.b, edge.a, hull.a)
++  }
++  if(d) { return d }
++  if(edge.b[0] < hull.b[0]) {
++    d = orient(hull.a, hull.b, edge.b)
++  } else {
++    d = orient(edge.b, edge.a, hull.b)
++  }
++  return d || hull.idx - edge.idx
++}
+ 
+-var rationalize = require('./lib/rationalize')
++function splitHulls(hulls, points, event) {
++  var splitIdx = bsearch.le(hulls, event, findSplit)
++  var hull = hulls[splitIdx]
++  var upperIds = hull.upperIds
++  var x = upperIds[upperIds.length-1]
++  hull.upperIds = [x]
++  hulls.splice(splitIdx+1, 0,
++    new PartialHull(event.a, event.b, event.idx, [x], upperIds))
++}
+ 
+-module.exports = sub
+ 
+-function sub(a, b) {
+-  return rationalize(a[0].mul(b[1]).sub(a[1].mul(b[0])), a[1].mul(b[1]))
++function mergeHulls(hulls, points, event) {
++  //Swap pointers for merge search
++  var tmp = event.a
++  event.a = event.b
++  event.b = tmp
++  var mergeIdx = bsearch.eq(hulls, event, findSplit)
++  var upper = hulls[mergeIdx]
++  var lower = hulls[mergeIdx-1]
++  lower.upperIds = upper.upperIds
++  hulls.splice(mergeIdx, 1)
+ }
+ 
+-},{"./lib/rationalize":35}],41:[function(require,module,exports){
+-'use strict'
+ 
+-var bn2num = require('./lib/bn-to-num')
+-var ctz = require('./lib/ctz')
++function monotoneTriangulate(points, edges) {
+ 
+-module.exports = roundRat
++  var numPoints = points.length
++  var numEdges = edges.length
+ 
+-//Round a rational to the closest float
+-function roundRat(f) {
+-  var a = f[0]
+-  var b = f[1]
+-  if(a.cmpn(0) === 0) {
+-    return 0
+-  }
+-  var h = a.divmod(b)
+-  var iv = h.div
+-  var x = bn2num(iv)
+-  var ir = h.mod
+-  if(ir.cmpn(0) === 0) {
+-    return x
++  var events = []
++
++  //Create point events
++  for(var i=0; i<numPoints; ++i) {
++    events.push(new Event(
++      points[i],
++      null,
++      EVENT_POINT,
++      i))
+   }
+-  if(x) {
+-    var s = ctz(x) + 4
+-    var y = bn2num(ir.shln(s).divRound(b))
+ 
+-    // flip the sign of y if x is negative
+-    if (x<0) {
+-      y = -y;
++  //Create edge events
++  for(var i=0; i<numEdges; ++i) {
++    var e = edges[i]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    if(a[0] < b[0]) {
++      events.push(
++        new Event(a, b, EVENT_START, i),
++        new Event(b, a, EVENT_END, i))
++    } else if(a[0] > b[0]) {
++      events.push(
++        new Event(b, a, EVENT_START, i),
++        new Event(a, b, EVENT_END, i))
+     }
++  }
+ 
+-    return x + y * Math.pow(2, -s)
+-  } else {
+-    var ybits = b.bitLength() - ir.bitLength() + 53
+-    var y = bn2num(ir.shln(ybits).divRound(b))
+-    if(ybits < 1023) {
+-      return y * Math.pow(2, -ybits)
++  //Sort events
++  events.sort(compareEvent)
++
++  //Initialize hull
++  var minX = events[0].a[0] - (1 + Math.abs(events[0].a[0])) * Math.pow(2, -52)
++  var hull = [ new PartialHull([minX, 1], [minX, 0], -1, [], [], [], []) ]
++
++  //Process events in order
++  var cells = []
++  for(var i=0, numEvents=events.length; i<numEvents; ++i) {
++    var event = events[i]
++    var type = event.type
++    if(type === EVENT_POINT) {
++      addPoint(cells, hull, points, event.a, event.idx)
++    } else if(type === EVENT_START) {
++      splitHulls(hull, points, event)
++    } else {
++      mergeHulls(hull, points, event)
+     }
+-    y *= Math.pow(2, -1023)
+-    return y * Math.pow(2, 1023-ybits)
+   }
++
++  //Return triangulation
++  return cells
+ }
+ 
+-},{"./lib/bn-to-num":31,"./lib/ctz":32}],42:[function(require,module,exports){
++},{"binary-search-bounds":45,"robust-orientation":140}],44:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = boxIntersectWrapper
++var bsearch = require('binary-search-bounds')
+ 
+-var pool = require('typedarray-pool')
+-var sweep = require('./lib/sweep')
+-var boxIntersectIter = require('./lib/intersect')
++module.exports = createTriangulation
+ 
+-function boxEmpty(d, box) {
+-  for(var j=0; j<d; ++j) {
+-    if(!(box[j] <= box[j+d])) {
+-      return true
+-    }
+-  }
+-  return false
++function Triangulation(stars, edges) {
++  this.stars = stars
++  this.edges = edges
+ }
+ 
+-//Unpack boxes into a flat typed array, remove empty boxes
+-function convertBoxes(boxes, d, data, ids) {
+-  var ptr = 0
+-  var count = 0
+-  for(var i=0, n=boxes.length; i<n; ++i) {
+-    var b = boxes[i]
+-    if(boxEmpty(d, b)) {
+-      continue
+-    }
+-    for(var j=0; j<2*d; ++j) {
+-      data[ptr++] = b[j]
++var proto = Triangulation.prototype
++
++function removePair(list, j, k) {
++  for(var i=1, n=list.length; i<n; i+=2) {
++    if(list[i-1] === j && list[i] === k) {
++      list[i-1] = list[n-2]
++      list[i] = list[n-1]
++      list.length = n - 2
++      return
+     }
+-    ids[count++] = i
+   }
+-  return count
+ }
+ 
+-//Perform type conversions, check bounds
+-function boxIntersect(red, blue, visit, full) {
+-  var n = red.length
+-  var m = blue.length
+-
+-  //If either array is empty, then we can skip this whole thing
+-  if(n <= 0 || m <= 0) {
+-    return
++proto.isConstraint = (function() {
++  var e = [0,0]
++  function compareLex(a, b) {
++    return a[0] - b[0] || a[1] - b[1]
+   }
+-
+-  //Compute dimension, if it is 0 then we skip
+-  var d = (red[0].length)>>>1
+-  if(d <= 0) {
+-    return
++  return function(i, j) {
++    e[0] = Math.min(i,j)
++    e[1] = Math.max(i,j)
++    return bsearch.eq(this.edges, e, compareLex) >= 0
+   }
++})()
+ 
+-  var retval
+-
+-  //Convert red boxes
+-  var redList  = pool.mallocDouble(2*d*n)
+-  var redIds   = pool.mallocInt32(n)
+-  n = convertBoxes(red, d, redList, redIds)
+-
+-  if(n > 0) {
+-    if(d === 1 && full) {
+-      //Special case: 1d complete
+-      sweep.init(n)
+-      retval = sweep.sweepComplete(
+-        d, visit, 
+-        0, n, redList, redIds,
+-        0, n, redList, redIds)
+-    } else {
+-
+-      //Convert blue boxes
+-      var blueList = pool.mallocDouble(2*d*m)
+-      var blueIds  = pool.mallocInt32(m)
+-      m = convertBoxes(blue, d, blueList, blueIds)
+-
+-      if(m > 0) {
+-        sweep.init(n+m)
++proto.removeTriangle = function(i, j, k) {
++  var stars = this.stars
++  removePair(stars[i], j, k)
++  removePair(stars[j], k, i)
++  removePair(stars[k], i, j)
++}
+ 
+-        if(d === 1) {
+-          //Special case: 1d bipartite
+-          retval = sweep.sweepBipartite(
+-            d, visit, 
+-            0, n, redList,  redIds,
+-            0, m, blueList, blueIds)
+-        } else {
+-          //General case:  d>1
+-          retval = boxIntersectIter(
+-            d, visit,    full,
+-            n, redList,  redIds,
+-            m, blueList, blueIds)
+-        }
++proto.addTriangle = function(i, j, k) {
++  var stars = this.stars
++  stars[i].push(j, k)
++  stars[j].push(k, i)
++  stars[k].push(i, j)
++}
+ 
+-        pool.free(blueList)
+-        pool.free(blueIds)
+-      }
++proto.opposite = function(j, i) {
++  var list = this.stars[i]
++  for(var k=1, n=list.length; k<n; k+=2) {
++    if(list[k] === j) {
++      return list[k-1]
+     }
+-
+-    pool.free(redList)
+-    pool.free(redIds)
+   }
+-
+-  return retval
+-}
+-
+-
+-var RESULT
+-
+-function appendItem(i,j) {
+-  RESULT.push([i,j])
++  return -1
+ }
+ 
+-function intersectFullArray(x) {
+-  RESULT = []
+-  boxIntersect(x, x, appendItem, true)
+-  return RESULT
++proto.flip = function(i, j) {
++  var a = this.opposite(i, j)
++  var b = this.opposite(j, i)
++  this.removeTriangle(i, j, a)
++  this.removeTriangle(j, i, b)
++  this.addTriangle(i, b, a)
++  this.addTriangle(j, a, b)
+ }
+ 
+-function intersectBipartiteArray(x, y) {
+-  RESULT = []
+-  boxIntersect(x, y, appendItem, false)
+-  return RESULT
++proto.edges = function() {
++  var stars = this.stars
++  var result = []
++  for(var i=0, n=stars.length; i<n; ++i) {
++    var list = stars[i]
++    for(var j=0, m=list.length; j<m; j+=2) {
++      result.push([list[j], list[j+1]])
++    }
++  }
++  return result
+ }
+ 
+-//User-friendly wrapper, handle full input and no-visitor cases
+-function boxIntersectWrapper(arg0, arg1, arg2) {
+-  var result
+-  switch(arguments.length) {
+-    case 1:
+-      return intersectFullArray(arg0)
+-    case 2:
+-      if(typeof arg1 === 'function') {
+-        return boxIntersect(arg0, arg0, arg1, true)
+-      } else {
+-        return intersectBipartiteArray(arg0, arg1)
++proto.cells = function() {
++  var stars = this.stars
++  var result = []
++  for(var i=0, n=stars.length; i<n; ++i) {
++    var list = stars[i]
++    for(var j=0, m=list.length; j<m; j+=2) {
++      var s = list[j]
++      var t = list[j+1]
++      if(i < Math.min(s, t)) {
++        result.push([i, s, t])
+       }
+-    case 3:
+-      return boxIntersect(arg0, arg1, arg2, false)
+-    default:
+-      throw new Error('box-intersect: Invalid arguments')
++    }
+   }
++  return result
+ }
+-},{"./lib/intersect":44,"./lib/sweep":48,"typedarray-pool":151}],43:[function(require,module,exports){
+-'use strict'
+ 
+-var DIMENSION   = 'd'
+-var AXIS        = 'ax'
+-var VISIT       = 'vv'
+-var FLIP        = 'fp'
++function createTriangulation(numVerts, edges) {
++  var stars = new Array(numVerts)
++  for(var i=0; i<numVerts; ++i) {
++    stars[i] = []
++  }
++  return new Triangulation(stars, edges)
++}
+ 
+-var ELEM_SIZE   = 'es'
++},{"binary-search-bounds":45}],45:[function(require,module,exports){
++"use strict"
+ 
+-var RED_START   = 'rs'
+-var RED_END     = 're'
+-var RED_BOXES   = 'rb'
+-var RED_INDEX   = 'ri'
+-var RED_PTR     = 'rp'
+-
+-var BLUE_START  = 'bs'
+-var BLUE_END    = 'be'
+-var BLUE_BOXES  = 'bb'
+-var BLUE_INDEX  = 'bi'
+-var BLUE_PTR    = 'bp'
+-
+-var RETVAL      = 'rv'
+-
+-var INNER_LABEL = 'Q'
+-
+-var ARGS = [
+-  DIMENSION,
+-  AXIS,
+-  VISIT,
+-  RED_START,
+-  RED_END,
+-  RED_BOXES,
+-  RED_INDEX,
+-  BLUE_START,
+-  BLUE_END,
+-  BLUE_BOXES,
+-  BLUE_INDEX
+-]
+-
+-function generateBruteForce(redMajor, flip, full) {
+-  var funcName = 'bruteForce' + 
+-    (redMajor ? 'Red' : 'Blue') + 
+-    (flip ? 'Flip' : '') +
+-    (full ? 'Full' : '')
+-
+-  var code = ['function ', funcName, '(', ARGS.join(), '){',
+-    'var ', ELEM_SIZE, '=2*', DIMENSION, ';']
+-
+-  var redLoop = 
+-    'for(var i=' + RED_START + ',' + RED_PTR + '=' + ELEM_SIZE + '*' + RED_START + ';' +
+-        'i<' + RED_END +';' +
+-        '++i,' + RED_PTR + '+=' + ELEM_SIZE + '){' +
+-        'var x0=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '],' +
+-            'x1=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '+' + DIMENSION + '],' +
+-            'xi=' + RED_INDEX + '[i];'
+-
+-  var blueLoop = 
+-    'for(var j=' + BLUE_START + ',' + BLUE_PTR + '=' + ELEM_SIZE + '*' + BLUE_START + ';' +
+-        'j<' + BLUE_END + ';' +
+-        '++j,' + BLUE_PTR + '+=' + ELEM_SIZE + '){' +
+-        'var y0=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '],' +
+-            (full ? 'y1=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '+' + DIMENSION + '],' : '') +
+-            'yi=' + BLUE_INDEX + '[j];'
+-
+-  if(redMajor) {
+-    code.push(redLoop, INNER_LABEL, ':', blueLoop)
++function compileSearch(funcName, predicate, reversed, extraArgs, earlyOut) {
++  var code = [
++    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
++earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
++";while(l<=h){\
++var m=(l+h)>>>1,x=a[m]"]
++  if(earlyOut) {
++    if(predicate.indexOf("c") < 0) {
++      code.push(";if(x===y){return m}else if(x<=y){")
++    } else {
++      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
++    }
+   } else {
+-    code.push(blueLoop, INNER_LABEL, ':', redLoop)
++    code.push(";if(", predicate, "){i=m;")
+   }
+-
+-  if(full) {
+-    code.push('if(y1<x0||x1<y0)continue;')
+-  } else if(flip) {
+-    code.push('if(y0<=x0||x1<y0)continue;')
++  if(reversed) {
++    code.push("l=m+1}else{h=m-1}")
+   } else {
+-    code.push('if(y0<x0||x1<y0)continue;')
++    code.push("h=m-1}else{l=m+1}")
+   }
+-
+-  code.push('for(var k='+AXIS+'+1;k<'+DIMENSION+';++k){'+
+-    'var r0='+RED_BOXES+'[k+'+RED_PTR+'],'+
+-        'r1='+RED_BOXES+'[k+'+DIMENSION+'+'+RED_PTR+'],'+
+-        'b0='+BLUE_BOXES+'[k+'+BLUE_PTR+'],'+
+-        'b1='+BLUE_BOXES+'[k+'+DIMENSION+'+'+BLUE_PTR+'];'+
+-      'if(r1<b0||b1<r0)continue ' + INNER_LABEL + ';}' +
+-      'var ' + RETVAL + '=' + VISIT + '(')
+-
+-  if(flip) {
+-    code.push('yi,xi')
++  code.push("}")
++  if(earlyOut) {
++    code.push("return -1};")
+   } else {
+-    code.push('xi,yi')
++    code.push("return i};")
+   }
++  return code.join("")
++}
+ 
+-  code.push(');if(' + RETVAL + '!==void 0)return ' + RETVAL + ';}}}')
++function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
++  var result = new Function([
++  compileSearch("A", "x" + predicate + "y", reversed, ["y"], earlyOut),
++  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], earlyOut),
++"function dispatchBsearch", suffix, "(a,y,c,l,h){\
++if(typeof(c)==='function'){\
++return P(a,(l===void 0)?0:l|0,(h===void 0)?a.length-1:h|0,y,c)\
++}else{\
++return A(a,(c===void 0)?0:c|0,(l===void 0)?a.length-1:l|0,y)\
++}}\
++return dispatchBsearch", suffix].join(""))
++  return result()
++}
+ 
+-  return {
+-    name: funcName, 
+-    code: code.join('')
+-  }
++module.exports = {
++  ge: compileBoundsSearch(">=", false, "GE"),
++  gt: compileBoundsSearch(">", false, "GT"),
++  lt: compileBoundsSearch("<", true, "LT"),
++  le: compileBoundsSearch("<=", true, "LE"),
++  eq: compileBoundsSearch("-", true, "EQ", true)
+ }
+ 
+-function bruteForcePlanner(full) {
+-  var funcName = 'bruteForce' + (full ? 'Full' : 'Partial')
+-  var prefix = []
+-  var fargs = ARGS.slice()
+-  if(!full) {
+-    fargs.splice(3, 0, FLIP)
+-  }
++},{}],46:[function(require,module,exports){
++'use strict'
+ 
+-  var code = ['function ' + funcName + '(' + fargs.join() + '){']
++module.exports = cleanPSLG
+ 
+-  function invoke(redMajor, flip) {
+-    var res = generateBruteForce(redMajor, flip, full)
+-    prefix.push(res.code)
+-    code.push('return ' + res.name + '(' + ARGS.join() + ');')
+-  }
++var UnionFind = require('union-find')
++var boxIntersect = require('box-intersect')
++var compareCell = require('compare-cell')
++var segseg = require('robust-segment-intersect')
++var rat = require('big-rat')
++var ratCmp = require('big-rat/cmp')
++var ratToFloat = require('big-rat/to-float')
++var ratVec = require('rat-vec')
++var nextafter = require('nextafter')
+ 
+-  code.push('if(' + RED_END + '-' + RED_START + '>' +
+-                    BLUE_END + '-' + BLUE_START + '){')
++var solveIntersection = require('./lib/rat-seg-intersect')
+ 
+-  if(full) {
+-    invoke(true, false)
+-    code.push('}else{')
+-    invoke(false, false)
++//Bounds on a rational number when rounded to a float
++function boundRat(r) {
++  var f = ratToFloat(r)
++  var cmp = ratCmp(rat(f), r)
++  if(cmp < 0) {
++    return [f, nextafter(f, Infinity)]
++  } else if(cmp > 0) {
++    return [nextafter(f, -Infinity), f]
+   } else {
+-    code.push('if(' + FLIP + '){')
+-    invoke(true, true)
+-    code.push('}else{')
+-    invoke(true, false)
+-    code.push('}}else{if(' + FLIP + '){')
+-    invoke(false, true)
+-    code.push('}else{')
+-    invoke(false, false)
+-    code.push('}')
++    return [f, f]
+   }
+-  code.push('}}return ' + funcName)
+-
+-  var codeStr = prefix.join('') + code.join('')
+-  var proc = new Function(codeStr)
+-  return proc()
+ }
+ 
+-
+-exports.partial = bruteForcePlanner(false)
+-exports.full    = bruteForcePlanner(true)
+-},{}],44:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = boxIntersectIter
+-
+-var pool = require('typedarray-pool')
+-var bits = require('bit-twiddle')
+-var bruteForce = require('./brute')
+-var bruteForcePartial = bruteForce.partial
+-var bruteForceFull = bruteForce.full
+-var sweep = require('./sweep')
+-var findMedian = require('./median')
+-var genPartition = require('./partition')
+-
+-//Twiddle parameters
+-var BRUTE_FORCE_CUTOFF    = 128       //Cut off for brute force search
+-var SCAN_CUTOFF           = (1<<22)   //Cut off for two way scan
+-var SCAN_COMPLETE_CUTOFF  = (1<<22)  
+-
+-//Partition functions
+-var partitionInteriorContainsInterval = genPartition(
+-  '!(lo>=p0)&&!(p1>=hi)', 
+-  ['p0', 'p1'])
+-
+-var partitionStartEqual = genPartition(
+-  'lo===p0',
+-  ['p0'])
+-
+-var partitionStartLessThan = genPartition(
+-  'lo<p0',
+-  ['p0'])
+-
+-var partitionEndLessThanEqual = genPartition(
+-  'hi<=p0',
+-  ['p0'])
+-
+-var partitionContainsPoint = genPartition(
+-  'lo<=p0&&p0<=hi',
+-  ['p0'])
+-
+-var partitionContainsPointProper = genPartition(
+-  'lo<p0&&p0<=hi',
+-  ['p0'])
+-
+-//Frame size for iterative loop
+-var IFRAME_SIZE = 6
+-var DFRAME_SIZE = 2
+-
+-//Data for box statck
+-var INIT_CAPACITY = 1024
+-var BOX_ISTACK  = pool.mallocInt32(INIT_CAPACITY)
+-var BOX_DSTACK  = pool.mallocDouble(INIT_CAPACITY)
+-
+-//Initialize iterative loop queue
+-function iterInit(d, count) {
+-  var levels = (8 * bits.log2(count+1) * (d+1))|0
+-  var maxInts = bits.nextPow2(IFRAME_SIZE*levels)
+-  if(BOX_ISTACK.length < maxInts) {
+-    pool.free(BOX_ISTACK)
+-    BOX_ISTACK = pool.mallocInt32(maxInts)
+-  }
+-  var maxDoubles = bits.nextPow2(DFRAME_SIZE*levels)
+-  if(BOX_DSTACK < maxDoubles) {
+-    pool.free(BOX_DSTACK)
+-    BOX_DSTACK = pool.mallocDouble(maxDoubles)
++//Convert a list of edges in a pslg to bounding boxes
++function boundEdges(points, edges) {
++  var bounds = new Array(edges.length)
++  for(var i=0; i<edges.length; ++i) {
++    var e = edges[i]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    bounds[i] = [
++      Math.min(a[0], b[0]),
++      Math.min(a[1], b[1]),
++      Math.max(a[0], b[0]),
++      Math.max(a[1], b[1]) ]
+   }
++  return bounds
+ }
+ 
+-//Append item to queue
+-function iterPush(ptr,
+-  axis, 
+-  redStart, redEnd, 
+-  blueStart, blueEnd, 
+-  state, 
+-  lo, hi) {
++//Convert a list of points into bounding boxes by duplicating coords
++function boundPoints(points) {
++  var bounds = new Array(points.length)
++  for(var i=0; i<points.length; ++i) {
++    var p = points[i]
++    bounds[i] = [ p[0], p[1], p[0], p[1] ]
++  }
++  return bounds
++}
+ 
+-  var iptr = IFRAME_SIZE * ptr
+-  BOX_ISTACK[iptr]   = axis
+-  BOX_ISTACK[iptr+1] = redStart
+-  BOX_ISTACK[iptr+2] = redEnd
+-  BOX_ISTACK[iptr+3] = blueStart
+-  BOX_ISTACK[iptr+4] = blueEnd
+-  BOX_ISTACK[iptr+5] = state
++//Find all pairs of crossing edges in a pslg (given edge bounds)
++function getCrossings(points, edges, edgeBounds) {
++  var result = []
++  boxIntersect(edgeBounds, function(i, j) {
++    var e = edges[i]
++    var f = edges[j]
++    if(e[0] === f[0] || e[0] === f[1] ||
++       e[1] === f[0] || e[1] === f[1]) {
++         return
++    }
++    var a = points[e[0]]
++    var b = points[e[1]]
++    var c = points[f[0]]
++    var d = points[f[1]]
++    if(segseg(a, b, c, d)) {
++      result.push([i, j])
++    }
++  })
++  return result
++}
+ 
+-  var dptr = DFRAME_SIZE * ptr
+-  BOX_DSTACK[dptr]   = lo
+-  BOX_DSTACK[dptr+1] = hi
++//Find all pairs of crossing vertices in a pslg (given edge/vert bounds)
++function getTJunctions(points, edges, edgeBounds, vertBounds) {
++  var result = []
++  boxIntersect(edgeBounds, vertBounds, function(i, v) {
++    var e = edges[i]
++    if(e[0] === v || e[1] === v) {
++      return
++    }
++    var p = points[v]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    if(segseg(a, b, p, p)) {
++      result.push([i, v])
++    }
++  })
++  return result
+ }
+ 
+-//Special case:  Intersect single point with list of intervals
+-function onePointPartial(
+-  d, axis, visit, flip,
+-  redStart, redEnd, red, redIndex,
+-  blueOffset, blue, blueId) {
+ 
+-  var elemSize = 2 * d
+-  var bluePtr  = blueOffset * elemSize
+-  var blueX    = blue[bluePtr + axis]
++//Cut edges along crossings/tjunctions
++function cutEdges(floatPoints, edges, crossings, junctions, useColor) {
+ 
+-red_loop:
+-  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
+-    var r0 = red[redPtr+axis]
+-    var r1 = red[redPtr+axis+d]
+-    if(blueX < r0 || r1 < blueX) {
+-      continue
+-    }
+-    if(flip && blueX === r0) {
++  //Convert crossings into tjunctions by constructing rational points
++  var ratPoints = []
++  for(var i=0; i<crossings.length; ++i) {
++    var crossing = crossings[i]
++    var e = crossing[0]
++    var f = crossing[1]
++    var ee = edges[e]
++    var ef = edges[f]
++    var x = solveIntersection(
++      ratVec(floatPoints[ee[0]]),
++      ratVec(floatPoints[ee[1]]),
++      ratVec(floatPoints[ef[0]]),
++      ratVec(floatPoints[ef[1]]))
++    if(!x) {
++      //Segments are parallel, should already be handled by t-junctions
+       continue
+     }
+-    var redId = redIndex[i]
+-    for(var j=axis+1; j<d; ++j) {
+-      var r0 = red[redPtr+j]
+-      var r1 = red[redPtr+j+d]
+-      var b0 = blue[bluePtr+j]
+-      var b1 = blue[bluePtr+j+d]
+-      if(r1 < b0 || b1 < r0) {
+-        continue red_loop
+-      }
+-    }
+-    var retval
+-    if(flip) {
+-      retval = visit(blueId, redId)
+-    } else {
+-      retval = visit(redId, blueId)
+-    }
+-    if(retval !== void 0) {
+-      return retval
++    var idx = ratPoints.length + floatPoints.length
++    ratPoints.push(x)
++    junctions.push([e, idx], [f, idx])
++  }
++
++  //Sort tjunctions
++  function getPoint(idx) {
++    if(idx >= floatPoints.length) {
++      return ratPoints[idx-floatPoints.length]
+     }
++    var p = floatPoints[idx]
++    return [ rat(p[0]), rat(p[1]) ]
+   }
+-}
++  junctions.sort(function(a, b) {
++    if(a[0] !== b[0]) {
++      return a[0] - b[0]
++    }
++    var u = getPoint(a[1])
++    var v = getPoint(b[1])
++    return ratCmp(u[0], v[0]) || ratCmp(u[1], v[1])
++  })
+ 
+-//Special case:  Intersect one point with list of intervals
+-function onePointFull(
+-  d, axis, visit,
+-  redStart, redEnd, red, redIndex,
+-  blueOffset, blue, blueId) {
++  //Split edges along junctions
++  for(var i=junctions.length-1; i>=0; --i) {
++    var junction = junctions[i]
++    var e = junction[0]
+ 
+-  var elemSize = 2 * d
+-  var bluePtr  = blueOffset * elemSize
+-  var blueX    = blue[bluePtr + axis]
++    var edge = edges[e]
++    var s = edge[0]
++    var t = edge[1]
+ 
+-red_loop:
+-  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
+-    var redId = redIndex[i]
+-    if(redId === blueId) {
+-      continue
++    //Check if edge is not lexicographically sorted
++    var a = floatPoints[s]
++    var b = floatPoints[t]
++    if(((a[0] - b[0]) || (a[1] - b[1])) < 0) {
++      var tmp = s
++      s = t
++      t = tmp
+     }
+-    var r0 = red[redPtr+axis]
+-    var r1 = red[redPtr+axis+d]
+-    if(blueX < r0 || r1 < blueX) {
+-      continue
++
++    //Split leading edge
++    edge[0] = s
++    var last = edge[1] = junction[1]
++
++    //If we are grouping edges by color, remember to track data
++    var color
++    if(useColor) {
++      color = edge[2]
+     }
+-    for(var j=axis+1; j<d; ++j) {
+-      var r0 = red[redPtr+j]
+-      var r1 = red[redPtr+j+d]
+-      var b0 = blue[bluePtr+j]
+-      var b1 = blue[bluePtr+j+d]
+-      if(r1 < b0 || b1 < r0) {
+-        continue red_loop
++
++    //Split other edges
++    while(i > 0 && junctions[i-1][0] === e) {
++      var junction = junctions[--i]
++      var next = junction[1]
++      if(useColor) {
++        edges.push([last, next, color])
++      } else {
++        edges.push([last, next])
+       }
++      last = next
+     }
+-    var retval = visit(redId, blueId)
+-    if(retval !== void 0) {
+-      return retval
++
++    //Add final edge
++    if(useColor) {
++      edges.push([last, t, color])
++    } else {
++      edges.push([last, t])
+     }
+   }
++
++  //Return constructed rational points
++  return ratPoints
+ }
+ 
+-//The main box intersection routine
+-function boxIntersectIter(
+-  d, visit, initFull,
+-  xSize, xBoxes, xIndex,
+-  ySize, yBoxes, yIndex) {
++//Merge overlapping points
++function dedupPoints(floatPoints, ratPoints, floatBounds) {
++  var numPoints = floatPoints.length + ratPoints.length
++  var uf        = new UnionFind(numPoints)
+ 
+-  //Reserve memory for stack
+-  iterInit(d, xSize + ySize)
++  //Compute rational bounds
++  var bounds = floatBounds
++  for(var i=0; i<ratPoints.length; ++i) {
++    var p = ratPoints[i]
++    var xb = boundRat(p[0])
++    var yb = boundRat(p[1])
++    bounds.push([ xb[0], yb[0], xb[1], yb[1] ])
++    floatPoints.push([ ratToFloat(p[0]), ratToFloat(p[1]) ])
++  }
+ 
+-  var top  = 0
+-  var elemSize = 2 * d
+-  var retval
++  //Link all points with over lapping boxes
++  boxIntersect(bounds, function(i, j) {
++    uf.link(i, j)
++  })
+ 
+-  iterPush(top++,
+-      0,
+-      0, xSize,
+-      0, ySize,
+-      initFull ? 16 : 0, 
+-      -Infinity, Infinity)
+-  if(!initFull) {
+-    iterPush(top++,
+-      0,
+-      0, ySize,
+-      0, xSize,
+-      1, 
+-      -Infinity, Infinity)
++  //Call find on each point to get a relabeling
++  var ptr = 0
++  var noDupes = true
++  var labels = new Array(numPoints)
++  for(var i=0; i<numPoints; ++i) {
++    var j = uf.find(i)
++    if(j === i) {
++      //If not a duplicate, then don't bother
++      labels[i] = ptr
++      floatPoints[ptr++] = floatPoints[i]
++    } else {
++      //Clear no-dupes flag, zero out label
++      noDupes = false
++      labels[i] = -1
++    }
+   }
++  floatPoints.length = ptr
+ 
+-  while(top > 0) {
+-    top  -= 1
++  //If no duplicates, return null to signal termination
++  if(noDupes) {
++    return null
++  }
+ 
+-    var iptr = top * IFRAME_SIZE
+-    var axis      = BOX_ISTACK[iptr]
+-    var redStart  = BOX_ISTACK[iptr+1]
+-    var redEnd    = BOX_ISTACK[iptr+2]
+-    var blueStart = BOX_ISTACK[iptr+3]
+-    var blueEnd   = BOX_ISTACK[iptr+4]
+-    var state     = BOX_ISTACK[iptr+5]
++  //Do a second pass to fix up missing labels
++  for(var i=0; i<numPoints; ++i) {
++    if(labels[i] < 0) {
++      labels[i] = labels[uf.find(i)]
++    }
++  }
+ 
+-    var dptr = top * DFRAME_SIZE
+-    var lo        = BOX_DSTACK[dptr]
+-    var hi        = BOX_DSTACK[dptr+1]
++  //Return resulting union-find data structure
++  return labels
++}
+ 
+-    //Unpack state info
+-    var flip      = (state & 1)
+-    var full      = !!(state & 16)
++function compareLex2(a,b) { return (a[0]-b[0]) || (a[1]-b[1]) }
++function compareLex3(a,b) {
++  var d = (a[0] - b[0]) || (a[1] - b[1])
++  if(d) {
++    return d
++  }
++  if(a[2] < b[2]) {
++    return -1
++  } else if(a[2] > b[2]) {
++    return 1
++  }
++  return 0
++}
+ 
+-    //Unpack indices
+-    var red       = xBoxes
+-    var redIndex  = xIndex
+-    var blue      = yBoxes
+-    var blueIndex = yIndex
+-    if(flip) {
+-      red         = yBoxes
+-      redIndex    = yIndex
+-      blue        = xBoxes
+-      blueIndex   = xIndex
++//Remove duplicate edge labels
++function dedupEdges(edges, labels, useColor) {
++  if(edges.length === 0) {
++    return
++  }
++  if(labels) {
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      var a = labels[e[0]]
++      var b = labels[e[1]]
++      e[0] = Math.min(a, b)
++      e[1] = Math.max(a, b)
+     }
+-
+-    if(state & 2) {
+-      redEnd = partitionStartLessThan(
+-        d, axis,
+-        redStart, redEnd, red, redIndex,
+-        hi)
+-      if(redStart >= redEnd) {
+-        continue
+-      }
++  } else {
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      var a = e[0]
++      var b = e[1]
++      e[0] = Math.min(a, b)
++      e[1] = Math.max(a, b)
+     }
+-    if(state & 4) {
+-      redStart = partitionEndLessThanEqual(
+-        d, axis,
+-        redStart, redEnd, red, redIndex,
+-        lo)
+-      if(redStart >= redEnd) {
+-        continue
+-      }
++  }
++  if(useColor) {
++    edges.sort(compareLex3)
++  } else {
++    edges.sort(compareLex2)
++  }
++  var ptr = 1
++  for(var i=1; i<edges.length; ++i) {
++    var prev = edges[i-1]
++    var next = edges[i]
++    if(next[0] === prev[0] && next[1] === prev[1] &&
++      (!useColor || next[2] === prev[2])) {
++      continue
+     }
+-    
+-    var redCount  = redEnd  - redStart
+-    var blueCount = blueEnd - blueStart
++    edges[ptr++] = next
++  }
++  edges.length = ptr
++}
+ 
+-    if(full) {
+-      if(d * redCount * (redCount + blueCount) < SCAN_COMPLETE_CUTOFF) {
+-        retval = sweep.scanComplete(
+-          d, axis, visit, 
+-          redStart, redEnd, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      }
+-    } else {
+-      if(d * Math.min(redCount, blueCount) < BRUTE_FORCE_CUTOFF) {
+-        //If input small, then use brute force
+-        retval = bruteForcePartial(
+-            d, axis, visit, flip,
+-            redStart,  redEnd,  red,  redIndex,
+-            blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      } else if(d * redCount * blueCount < SCAN_CUTOFF) {
+-        //If input medium sized, then use sweep and prune
+-        retval = sweep.scanBipartite(
+-          d, axis, visit, flip, 
+-          redStart, redEnd, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      }
+-    }
+-    
+-    //First, find all red intervals whose interior contains (lo,hi)
+-    var red0 = partitionInteriorContainsInterval(
+-      d, axis, 
+-      redStart, redEnd, red, redIndex,
+-      lo, hi)
++//Repeat until convergence
++function snapRound(points, edges, useColor) {
+ 
+-    //Lower dimensional case
+-    if(redStart < red0) {
++  // 1. find edge crossings
++  var edgeBounds = boundEdges(points, edges)
++  var crossings  = getCrossings(points, edges, edgeBounds)
+ 
+-      if(d * (red0 - redStart) < BRUTE_FORCE_CUTOFF) {
+-        //Special case for small inputs: use brute force
+-        retval = bruteForceFull(
+-          d, axis+1, visit,
+-          redStart, red0, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      } else if(axis === d-2) {
+-        if(flip) {
+-          retval = sweep.sweepBipartite(
+-            d, visit,
+-            blueStart, blueEnd, blue, blueIndex,
+-            redStart, red0, red, redIndex)
+-        } else {
+-          retval = sweep.sweepBipartite(
+-            d, visit,
+-            redStart, red0, red, redIndex,
+-            blueStart, blueEnd, blue, blueIndex)
+-        }
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      } else {
+-        iterPush(top++,
+-          axis+1,
+-          redStart, red0,
+-          blueStart, blueEnd,
+-          flip,
+-          -Infinity, Infinity)
+-        iterPush(top++,
+-          axis+1,
+-          blueStart, blueEnd,
+-          redStart, red0,
+-          flip^1,
+-          -Infinity, Infinity)
+-      }
+-    }
++  // 2. find t-junctions
++  var vertBounds = boundPoints(points)
++  var tjunctions = getTJunctions(points, edges, edgeBounds, vertBounds)
+ 
+-    //Divide and conquer phase
+-    if(red0 < redEnd) {
++  // 3. cut edges, construct rational points
++  var ratPoints  = cutEdges(points, edges, crossings, tjunctions, useColor)
+ 
+-      //Cut blue into 3 parts:
+-      //
+-      //  Points < mid point
+-      //  Points = mid point
+-      //  Points > mid point
+-      //
+-      var blue0 = findMedian(
+-        d, axis, 
+-        blueStart, blueEnd, blue, blueIndex)
+-      var mid = blue[elemSize * blue0 + axis]
+-      var blue1 = partitionStartEqual(
+-        d, axis,
+-        blue0, blueEnd, blue, blueIndex,
+-        mid)
++  // 4. dedupe verts
++  var labels     = dedupPoints(points, ratPoints, vertBounds)
+ 
+-      //Right case
+-      if(blue1 < blueEnd) {
+-        iterPush(top++,
+-          axis,
+-          red0, redEnd,
+-          blue1, blueEnd,
+-          (flip|4) + (full ? 16 : 0),
+-          mid, hi)
+-      }
++  // 6. dedupe edges
++  dedupEdges(edges, labels, useColor)
+ 
+-      //Left case
+-      if(blueStart < blue0) {
+-        iterPush(top++,
+-          axis,
+-          red0, redEnd,
+-          blueStart, blue0,
+-          (flip|2) + (full ? 16 : 0),
+-          lo, mid)
+-      }
++  // 5. check termination
++  if(!labels) {
++    return (crossings.length > 0 || tjunctions.length > 0)
++  }
+ 
+-      //Center case (the hard part)
+-      if(blue0 + 1 === blue1) {
+-        //Optimization: Range with exactly 1 point, use a brute force scan
+-        if(full) {
+-          retval = onePointFull(
+-            d, axis, visit,
+-            red0, redEnd, red, redIndex,
+-            blue0, blue, blueIndex[blue0])
+-        } else {
+-          retval = onePointPartial(
+-            d, axis, visit, flip,
+-            red0, redEnd, red, redIndex,
+-            blue0, blue, blueIndex[blue0])
+-        }
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      } else if(blue0 < blue1) {
+-        var red1
+-        if(full) {
+-          //If full intersection, need to handle special case
+-          red1 = partitionContainsPoint(
+-            d, axis,
+-            red0, redEnd, red, redIndex,
+-            mid)
+-          if(red0 < red1) {
+-            var redX = partitionStartEqual(
+-              d, axis,
+-              red0, red1, red, redIndex,
+-              mid)
+-            if(axis === d-2) {
+-              //Degenerate sweep intersection:
+-              //  [red0, redX] with [blue0, blue1]
+-              if(red0 < redX) {
+-                retval = sweep.sweepComplete(
+-                  d, visit,
+-                  red0, redX, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-                if(retval !== void 0) {
+-                  return retval
+-                }
+-              }
++  // More iterations necessary
++  return true
++}
+ 
+-              //Normal sweep intersection:
+-              //  [redX, red1] with [blue0, blue1]
+-              if(redX < red1) {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  redX, red1, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-                if(retval !== void 0) {
+-                  return retval
+-                }
+-              }
+-            } else {
+-              if(red0 < redX) {
+-                iterPush(top++,
+-                  axis+1,
+-                  red0, redX,
+-                  blue0, blue1,
+-                  16,
+-                  -Infinity, Infinity)
+-              }
+-              if(redX < red1) {
+-                iterPush(top++,
+-                  axis+1,
+-                  redX, red1,
+-                  blue0, blue1,
+-                  0,
+-                  -Infinity, Infinity)
+-                iterPush(top++,
+-                  axis+1,
+-                  blue0, blue1,
+-                  redX, red1,
+-                  1,
+-                  -Infinity, Infinity)
+-              }
+-            }
+-          }
+-        } else {
+-          if(flip) {
+-            red1 = partitionContainsPointProper(
+-              d, axis,
+-              red0, redEnd, red, redIndex,
+-              mid)
+-          } else {
+-            red1 = partitionContainsPoint(
+-              d, axis,
+-              red0, redEnd, red, redIndex,
+-              mid)
+-          }
+-          if(red0 < red1) {
+-            if(axis === d-2) {
+-              if(flip) {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  blue0, blue1, blue, blueIndex,
+-                  red0, red1, red, redIndex)
+-              } else {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  red0, red1, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-              }
+-            } else {
+-              iterPush(top++,
+-                axis+1,
+-                red0, red1,
+-                blue0, blue1,
+-                flip,
+-                -Infinity, Infinity)
+-              iterPush(top++,
+-                axis+1,
+-                blue0, blue1,
+-                red0, red1,
+-                flip^1,
+-                -Infinity, Infinity)
+-            }
+-          }
+-        }
+-      }
++//Main loop, runs PSLG clean up until completion
++function cleanPSLG(points, edges, colors) {
++  var modified = false
++
++  //If using colors, augment edges with color data
++  var prevEdges
++  if(colors) {
++    prevEdges = edges
++    var augEdges = new Array(edges.length)
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      augEdges[i] = [e[0], e[1], colors[i]]
++    }
++    edges = augEdges
++  }
++
++  //Run snap rounding until convergence
++  while(snapRound(points, edges, !!colors)) {
++    modified = true
++  }
++
++  //Strip color tags
++  if(!!colors && modified) {
++    prevEdges.length = 0
++    colors.length = 0
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      prevEdges.push([e[0], e[1]])
++      colors.push(e[2])
+     }
+   }
++
++  return modified
+ }
+-},{"./brute":43,"./median":45,"./partition":46,"./sweep":48,"bit-twiddle":9,"typedarray-pool":151}],45:[function(require,module,exports){
++
++},{"./lib/rat-seg-intersect":47,"big-rat":14,"big-rat/cmp":12,"big-rat/to-float":26,"box-intersect":30,"compare-cell":49,"nextafter":124,"rat-vec":135,"robust-segment-intersect":143,"union-find":163}],47:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = findMedian
++//TODO: Move this to a separate module
+ 
+-var genPartition = require('./partition')
++module.exports = solveIntersection
+ 
+-var partitionStartLessThan = genPartition('lo<p0', ['p0'])
++var ratMul = require('big-rat/mul')
++var ratDiv = require('big-rat/div')
++var ratSub = require('big-rat/sub')
++var ratSign = require('big-rat/sign')
++var rvSub = require('rat-vec/sub')
++var rvAdd = require('rat-vec/add')
++var rvMuls = require('rat-vec/muls')
+ 
+-var PARTITION_THRESHOLD = 8   //Cut off for using insertion sort in findMedian
++var toFloat = require('big-rat/to-float')
+ 
+-//Base case for median finding:  Use insertion sort
+-function insertionSort(d, axis, start, end, boxes, ids) {
+-  var elemSize = 2 * d
+-  var boxPtr = elemSize * (start+1) + axis
+-  for(var i=start+1; i<end; ++i, boxPtr+=elemSize) {
+-    var x = boxes[boxPtr]
+-    for(var j=i, ptr=elemSize*(i-1); 
+-        j>start && boxes[ptr+axis] > x; 
+-        --j, ptr-=elemSize) {
+-      //Swap
+-      var aPtr = ptr
+-      var bPtr = ptr+elemSize
+-      for(var k=0; k<elemSize; ++k, ++aPtr, ++bPtr) {
+-        var y = boxes[aPtr]
+-        boxes[aPtr] = boxes[bPtr]
+-        boxes[bPtr] = y
+-      }
+-      var tmp = ids[j]
+-      ids[j] = ids[j-1]
+-      ids[j-1] = tmp
+-    }
+-  }
++function ratPerp(a, b) {
++  return ratSub(ratMul(a[0], b[1]), ratMul(a[1], b[0]))
+ }
+ 
+-//Find median using quick select algorithm
+-//  takes O(n) time with high probability
+-function findMedian(d, axis, start, end, boxes, ids) {
+-  if(end <= start+1) {
+-    return start
+-  }
++//Solve for intersection
++//  x = a + t (b-a)
++//  (x - c) ^ (d-c) = 0
++//  (t * (b-a) + (a-c) ) ^ (d-c) = 0
++//  t * (b-a)^(d-c) = (d-c)^(a-c)
++//  t = (d-c)^(a-c) / (b-a)^(d-c)
+ 
+-  var lo       = start
+-  var hi       = end
+-  var mid      = ((end + start) >>> 1)
+-  var elemSize = 2*d
+-  var pivot    = mid
+-  var value    = boxes[elemSize*mid+axis]
+-  
+-  while(lo < hi) {
+-    if(hi - lo < PARTITION_THRESHOLD) {
+-      insertionSort(d, axis, lo, hi, boxes, ids)
+-      value = boxes[elemSize*mid+axis]
+-      break
+-    }
+-    
+-    //Select pivot using median-of-3
+-    var count  = hi - lo
+-    var pivot0 = (Math.random()*count+lo)|0
+-    var value0 = boxes[elemSize*pivot0 + axis]
+-    var pivot1 = (Math.random()*count+lo)|0
+-    var value1 = boxes[elemSize*pivot1 + axis]
+-    var pivot2 = (Math.random()*count+lo)|0
+-    var value2 = boxes[elemSize*pivot2 + axis]
+-    if(value0 <= value1) {
+-      if(value2 >= value1) {
+-        pivot = pivot1
+-        value = value1
+-      } else if(value0 >= value2) {
+-        pivot = pivot0
+-        value = value0
+-      } else {
+-        pivot = pivot2
+-        value = value2
+-      }
+-    } else {
+-      if(value1 >= value2) {
+-        pivot = pivot1
+-        value = value1
+-      } else if(value2 >= value0) {
+-        pivot = pivot0
+-        value = value0
+-      } else {
+-        pivot = pivot2
+-        value = value2
+-      }
+-    }
++function solveIntersection(a, b, c, d) {
++  var ba = rvSub(b, a)
++  var dc = rvSub(d, c)
+ 
+-    //Swap pivot to end of array
+-    var aPtr = elemSize * (hi-1)
+-    var bPtr = elemSize * pivot
+-    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
+-      var x = boxes[aPtr]
+-      boxes[aPtr] = boxes[bPtr]
+-      boxes[bPtr] = x
+-    }
+-    var y = ids[hi-1]
+-    ids[hi-1] = ids[pivot]
+-    ids[pivot] = y
++  var baXdc = ratPerp(ba, dc)
+ 
+-    //Partition using pivot
+-    pivot = partitionStartLessThan(
+-      d, axis, 
+-      lo, hi-1, boxes, ids,
+-      value)
++  if(ratSign(baXdc) === 0) {
++    return null
++  }
+ 
+-    //Swap pivot back
+-    var aPtr = elemSize * (hi-1)
+-    var bPtr = elemSize * pivot
+-    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
+-      var x = boxes[aPtr]
+-      boxes[aPtr] = boxes[bPtr]
+-      boxes[bPtr] = x
+-    }
+-    var y = ids[hi-1]
+-    ids[hi-1] = ids[pivot]
+-    ids[pivot] = y
++  var ac = rvSub(a, c)
++  var dcXac = ratPerp(dc, ac)
+ 
+-    //Swap pivot to last pivot
+-    if(mid < pivot) {
+-      hi = pivot-1
+-      while(lo < hi && 
+-        boxes[elemSize*(hi-1)+axis] === value) {
+-        hi -= 1
+-      }
+-      hi += 1
+-    } else if(pivot < mid) {
+-      lo = pivot + 1
+-      while(lo < hi &&
+-        boxes[elemSize*lo+axis] === value) {
+-        lo += 1
+-      }
+-    } else {
+-      break
+-    }
+-  }
++  var t = ratDiv(dcXac, baXdc)
+ 
+-  //Make sure pivot is at start
+-  return partitionStartLessThan(
+-    d, axis, 
+-    start, mid, boxes, ids,
+-    boxes[elemSize*mid+axis])
++  return rvAdd(a, rvMuls(ba, t))
+ }
+-},{"./partition":46}],46:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = genPartition
+ 
+-var code = 'for(var j=2*a,k=j*c,l=k,m=c,n=b,o=a+b,p=c;d>p;++p,k+=j){var _;if($)if(m===p)m+=1,l+=j;else{for(var s=0;j>s;++s){var t=e[k+s];e[k+s]=e[l],e[l++]=t}var u=f[p];f[p]=f[m],f[m++]=u}}return m'
++},{"big-rat/div":13,"big-rat/mul":23,"big-rat/sign":24,"big-rat/sub":25,"big-rat/to-float":26,"rat-vec/add":134,"rat-vec/muls":136,"rat-vec/sub":137}],48:[function(require,module,exports){
++"use strict"
+ 
+-function genPartition(predicate, args) {
+-  var fargs ='abcdef'.split('').concat(args)
+-  var reads = []
+-  if(predicate.indexOf('lo') >= 0) {
+-    reads.push('lo=e[k+n]')
+-  }
+-  if(predicate.indexOf('hi') >= 0) {
+-    reads.push('hi=e[k+o]')
+-  }
+-  fargs.push(
+-    code.replace('_', reads.join())
+-        .replace('$', predicate))
+-  return Function.apply(void 0, fargs)
+-}
+-},{}],47:[function(require,module,exports){
+-'use strict';
++module.exports = compareAngle
+ 
+-//This code is extracted from ndarray-sort
+-//It is inlined here as a temporary workaround
++var orient = require("robust-orientation")
++var sgn = require("signum")
++var twoSum = require("two-sum")
++var robustProduct = require("robust-product")
++var robustSum = require("robust-sum")
+ 
+-module.exports = wrapper;
++function testInterior(a, b, c) {
++  var x0 = twoSum(a[0], -b[0])
++  var y0 = twoSum(a[1], -b[1])
++  var x1 = twoSum(c[0], -b[0])
++  var y1 = twoSum(c[1], -b[1])
+ 
+-var INSERT_SORT_CUTOFF = 32
++  var d = robustSum(
++    robustProduct(x0, x1),
++    robustProduct(y0, y1))
+ 
+-function wrapper(data, n0) {
+-  if (n0 <= 4*INSERT_SORT_CUTOFF) {
+-    insertionSort(0, n0 - 1, data);
+-  } else {
+-    quickSort(0, n0 - 1, data);
+-  }
++  return d[d.length-1] >= 0
+ }
+ 
+-function insertionSort(left, right, data) {
+-  var ptr = 2*(left+1)
+-  for(var i=left+1; i<=right; ++i) {
+-    var a = data[ptr++]
+-    var b = data[ptr++]
+-    var j = i
+-    var jptr = ptr-2
+-    while(j-- > left) {
+-      var x = data[jptr-2]
+-      var y = data[jptr-1]
+-      if(x < a) {
+-        break
+-      } else if(x === a && y < b) {
+-        break
++function compareAngle(a, b, c, d) {
++  var bcd = orient(b, c, d)
++  if(bcd === 0) {
++    //Handle degenerate cases
++    var sabc = sgn(orient(a, b, c))
++    var sabd = sgn(orient(a, b, d))
++    if(sabc === sabd) {
++      if(sabc === 0) {
++        var ic = testInterior(a, b, c)
++        var id = testInterior(a, b, d)
++        if(ic === id) {
++          return 0
++        } else if(ic) {
++          return 1
++        } else {
++          return -1
++        }
++      }
++      return 0
++    } else if(sabd === 0) {
++      if(sabc > 0) {
++        return -1
++      } else if(testInterior(a, b, d)) {
++        return -1
++      } else {
++        return 1
++      }
++    } else if(sabc === 0) {
++      if(sabd > 0) {
++        return 1
++      } else if(testInterior(a, b, c)) {
++        return 1
++      } else {
++        return -1
+       }
+-      data[jptr]   = x
+-      data[jptr+1] = y
+-      jptr -= 2
+     }
+-    data[jptr]   = a
+-    data[jptr+1] = b
+-  }
+-}
+-
+-function swap(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  var x = data[i]
+-  var y = data[i+1]
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-  data[j] = x
+-  data[j+1] = y
+-}
+-
+-function move(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-}
+-
+-function rotate(i, j, k, data) {
+-  i *= 2
+-  j *= 2
+-  k *= 2
+-  var x = data[i]
+-  var y = data[i+1]
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-  data[j] = data[k]
+-  data[j+1] = data[k+1]
+-  data[k] = x
+-  data[k+1] = y
+-}
+-
+-function shufflePivot(i, j, px, py, data) {
+-  i *= 2
+-  j *= 2
+-  data[i] = data[j]
+-  data[j] = px
+-  data[i+1] = data[j+1]
+-  data[j+1] = py
+-}
+-
+-function compare(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  var x = data[i],
+-      y = data[j]
+-  if(x < y) {
+-    return false
+-  } else if(x === y) {
+-    return data[i+1] > data[j+1]
++    return sgn(sabd - sabc)
+   }
+-  return true
+-}
+-
+-function comparePivot(i, y, b, data) {
+-  i *= 2
+-  var x = data[i]
+-  if(x < y) {
+-    return true
+-  } else if(x === y) {
+-    return data[i+1] < b
++  var abc = orient(a, b, c)
++  if(abc > 0) {
++    if(bcd > 0 && orient(a, b, d) > 0) {
++      return 1
++    }
++    return -1
++  } else if(abc < 0) {
++    if(bcd > 0 || orient(a, b, d) > 0) {
++      return 1
++    }
++    return -1
++  } else {
++    var abd = orient(a, b, d)
++    if(abd > 0) {
++      return 1
++    } else {
++      if(testInterior(a, b, c)) {
++        return 1
++      } else {
++        return -1
++      }
++    }
+   }
+-  return false
+ }
++},{"robust-orientation":140,"robust-product":141,"robust-sum":145,"signum":146,"two-sum":161}],49:[function(require,module,exports){
++module.exports = compareCells
+ 
+-function quickSort(left, right, data) {
+-  var sixth = (right - left + 1) / 6 | 0, 
+-      index1 = left + sixth, 
+-      index5 = right - sixth, 
+-      index3 = left + right >> 1, 
+-      index2 = index3 - sixth, 
+-      index4 = index3 + sixth, 
+-      el1 = index1, 
+-      el2 = index2, 
+-      el3 = index3, 
+-      el4 = index4, 
+-      el5 = index5, 
+-      less = left + 1, 
+-      great = right - 1, 
+-      tmp = 0
+-  if(compare(el1, el2, data)) {
+-    tmp = el1
+-    el1 = el2
+-    el2 = tmp
+-  }
+-  if(compare(el4, el5, data)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el1, el3, data)) {
+-    tmp = el1
+-    el1 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el2, el3, data)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el1, el4, data)) {
+-    tmp = el1
+-    el1 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el3, el4, data)) {
+-    tmp = el3
+-    el3 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el2, el5, data)) {
+-    tmp = el2
+-    el2 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el2, el3, data)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el4, el5, data)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
++var min = Math.min
+ 
+-  var pivot1X = data[2*el2]
+-  var pivot1Y = data[2*el2+1]
+-  var pivot2X = data[2*el4]
+-  var pivot2Y = data[2*el4+1]
++function compareInt(a, b) {
++  return a - b
++}
+ 
+-  var ptr0 = 2 * el1;
+-  var ptr2 = 2 * el3;
+-  var ptr4 = 2 * el5;
+-  var ptr5 = 2 * index1;
+-  var ptr6 = 2 * index3;
+-  var ptr7 = 2 * index5;
+-  for (var i1 = 0; i1 < 2; ++i1) {
+-    var x = data[ptr0+i1];
+-    var y = data[ptr2+i1];
+-    var z = data[ptr4+i1];
+-    data[ptr5+i1] = x;
+-    data[ptr6+i1] = y;
+-    data[ptr7+i1] = z;
++function compareCells(a, b) {
++  var n = a.length
++    , t = a.length - b.length
++  if(t) {
++    return t
+   }
+-
+-  move(index2, left, data)
+-  move(index4, right, data)
+-  for (var k = less; k <= great; ++k) {
+-    if (comparePivot(k, pivot1X, pivot1Y, data)) {
+-      if (k !== less) {
+-        swap(k, less, data)
++  switch(n) {
++    case 0:
++      return 0
++    case 1:
++      return a[0] - b[0]
++    case 2:
++      return (a[0]+a[1]-b[0]-b[1]) ||
++             min(a[0],a[1]) - min(b[0],b[1])
++    case 3:
++      var l1 = a[0]+a[1]
++        , m1 = b[0]+b[1]
++      t = l1+a[2] - (m1+b[2])
++      if(t) {
++        return t
+       }
+-      ++less;
+-    } else {
+-      if (!comparePivot(k, pivot2X, pivot2Y, data)) {
+-        while (true) {
+-          if (!comparePivot(great, pivot2X, pivot2Y, data)) {
+-            if (--great < k) {
+-              break;
+-            }
+-            continue;
+-          } else {
+-            if (comparePivot(great, pivot1X, pivot1Y, data)) {
+-              rotate(k, less, great, data)
+-              ++less;
+-              --great;
+-            } else {
+-              swap(k, great, data)
+-              --great;
+-            }
+-            break;
+-          }
++      var l0 = min(a[0], a[1])
++        , m0 = min(b[0], b[1])
++      return min(l0, a[2]) - min(m0, b[2]) ||
++             min(l0+a[2], l1) - min(m0+b[2], m1)
++    case 4:
++      var aw=a[0], ax=a[1], ay=a[2], az=a[3]
++        , bw=b[0], bx=b[1], by=b[2], bz=b[3]
++      return (aw+ax+ay+az)-(bw+bx+by+bz) ||
++             min(aw,ax,ay,az)-min(bw,bx,by,bz,bw) ||
++             min(aw+ax,aw+ay,aw+az,ax+ay,ax+az,ay+az) -
++               min(bw+bx,bw+by,bw+bz,bx+by,bx+bz,by+bz) ||
++             min(aw+ax+ay,aw+ax+az,aw+ay+az,ax+ay+az) -
++               min(bw+bx+by,bw+bx+bz,bw+by+bz,bx+by+bz)
++    default:
++      var as = a.slice().sort(compareInt)
++      var bs = b.slice().sort(compareInt)
++      for(var i=0; i<n; ++i) {
++        t = as[i] - bs[i]
++        if(t) {
++          return t
+         }
+       }
+-    }
+-  }
+-  shufflePivot(left, less-1, pivot1X, pivot1Y, data)
+-  shufflePivot(right, great+1, pivot2X, pivot2Y, data)
+-  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
+-    insertionSort(left, less - 2, data);
+-  } else {
+-    quickSort(left, less - 2, data);
+-  }
+-  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
+-    insertionSort(great + 2, right, data);
+-  } else {
+-    quickSort(great + 2, right, data);
+-  }
+-  if (great - less <= INSERT_SORT_CUTOFF) {
+-    insertionSort(less, great, data);
+-  } else {
+-    quickSort(less, great, data);
++      return 0
+   }
+ }
+-},{}],48:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = {
+-  init:           sqInit,
+-  sweepBipartite: sweepBipartite,
+-  sweepComplete:  sweepComplete,
+-  scanBipartite:  scanBipartite,
+-  scanComplete:   scanComplete
+-}
+ 
+-var pool  = require('typedarray-pool')
+-var bits  = require('bit-twiddle')
+-var isort = require('./sort')
++},{}],50:[function(require,module,exports){
++"use strict"
++
++var createThunk = require("./lib/thunk.js")
++
++function Procedure() {
++  this.argTypes = []
++  this.shimArgs = []
++  this.arrayArgs = []
++  this.arrayBlockIndices = []
++  this.scalarArgs = []
++  this.offsetArgs = []
++  this.offsetArgIndex = []
++  this.indexArgs = []
++  this.shapeArgs = []
++  this.funcName = ""
++  this.pre = null
++  this.body = null
++  this.post = null
++  this.debug = false
++}
++
++function compileCwise(user_args) {
++  //Create procedure
++  var proc = new Procedure()
++  
++  //Parse blocks
++  proc.pre    = user_args.pre
++  proc.body   = user_args.body
++  proc.post   = user_args.post
++
++  //Parse arguments
++  var proc_args = user_args.args.slice(0)
++  proc.argTypes = proc_args
++  for(var i=0; i<proc_args.length; ++i) {
++    var arg_type = proc_args[i]
++    if(arg_type === "array" || (typeof arg_type === "object" && arg_type.blockIndices)) {
++      proc.argTypes[i] = "array"
++      proc.arrayArgs.push(i)
++      proc.arrayBlockIndices.push(arg_type.blockIndices ? arg_type.blockIndices : 0)
++      proc.shimArgs.push("array" + i)
++      if(i < proc.pre.args.length && proc.pre.args[i].count>0) {
++        throw new Error("cwise: pre() block may not reference array args")
++      }
++      if(i < proc.post.args.length && proc.post.args[i].count>0) {
++        throw new Error("cwise: post() block may not reference array args")
++      }
++    } else if(arg_type === "scalar") {
++      proc.scalarArgs.push(i)
++      proc.shimArgs.push("scalar" + i)
++    } else if(arg_type === "index") {
++      proc.indexArgs.push(i)
++      if(i < proc.pre.args.length && proc.pre.args[i].count > 0) {
++        throw new Error("cwise: pre() block may not reference array index")
++      }
++      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
++        throw new Error("cwise: body() block may not write to array index")
++      }
++      if(i < proc.post.args.length && proc.post.args[i].count > 0) {
++        throw new Error("cwise: post() block may not reference array index")
++      }
++    } else if(arg_type === "shape") {
++      proc.shapeArgs.push(i)
++      if(i < proc.pre.args.length && proc.pre.args[i].lvalue) {
++        throw new Error("cwise: pre() block may not write to array shape")
++      }
++      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
++        throw new Error("cwise: body() block may not write to array shape")
++      }
++      if(i < proc.post.args.length && proc.post.args[i].lvalue) {
++        throw new Error("cwise: post() block may not write to array shape")
++      }
++    } else if(typeof arg_type === "object" && arg_type.offset) {
++      proc.argTypes[i] = "offset"
++      proc.offsetArgs.push({ array: arg_type.array, offset:arg_type.offset })
++      proc.offsetArgIndex.push(i)
++    } else {
++      throw new Error("cwise: Unknown argument type " + proc_args[i])
++    }
++  }
++  
++  //Make sure at least one array argument was specified
++  if(proc.arrayArgs.length <= 0) {
++    throw new Error("cwise: No array arguments specified")
++  }
++  
++  //Make sure arguments are correct
++  if(proc.pre.args.length > proc_args.length) {
++    throw new Error("cwise: Too many arguments in pre() block")
++  }
++  if(proc.body.args.length > proc_args.length) {
++    throw new Error("cwise: Too many arguments in body() block")
++  }
++  if(proc.post.args.length > proc_args.length) {
++    throw new Error("cwise: Too many arguments in post() block")
++  }
++
++  //Check debug flag
++  proc.debug = !!user_args.printCode || !!user_args.debug
++  
++  //Retrieve name
++  proc.funcName = user_args.funcName || "cwise"
++  
++  //Read in block size
++  proc.blockSize = user_args.blockSize || 64
++
++  return createThunk(proc)
++}
++
++module.exports = compileCwise
+ 
+-//Flag for blue
+-var BLUE_FLAG = (1<<28)
++},{"./lib/thunk.js":52}],51:[function(require,module,exports){
++"use strict"
++
++var uniq = require("uniq")
++
++// This function generates very simple loops analogous to how you typically traverse arrays (the outermost loop corresponds to the slowest changing index, the innermost loop to the fastest changing index)
++// TODO: If two arrays have the same strides (and offsets) there is potential for decreasing the number of "pointers" and related variables. The drawback is that the type signature would become more specific and that there would thus be less potential for caching, but it might still be worth it, especially when dealing with large numbers of arguments.
++function innerFill(order, proc, body) {
++  var dimension = order.length
++    , nargs = proc.arrayArgs.length
++    , has_index = proc.indexArgs.length>0
++    , code = []
++    , vars = []
++    , idx=0, pidx=0, i, j
++  for(i=0; i<dimension; ++i) { // Iteration variables
++    vars.push(["i",i,"=0"].join(""))
++  }
++  //Compute scan deltas
++  for(j=0; j<nargs; ++j) {
++    for(i=0; i<dimension; ++i) {
++      pidx = idx
++      idx = order[i]
++      if(i === 0) { // The innermost/fastest dimension's delta is simply its stride
++        vars.push(["d",j,"s",i,"=t",j,"p",idx].join(""))
++      } else { // For other dimensions the delta is basically the stride minus something which essentially "rewinds" the previous (more inner) dimension
++        vars.push(["d",j,"s",i,"=(t",j,"p",idx,"-s",pidx,"*t",j,"p",pidx,")"].join(""))
++      }
++    }
++  }
++  code.push("var " + vars.join(","))
++  //Scan loop
++  for(i=dimension-1; i>=0; --i) { // Start at largest stride and work your way inwards
++    idx = order[i]
++    code.push(["for(i",i,"=0;i",i,"<s",idx,";++i",i,"){"].join(""))
++  }
++  //Push body of inner loop
++  code.push(body)
++  //Advance scan pointers
++  for(i=0; i<dimension; ++i) {
++    pidx = idx
++    idx = order[i]
++    for(j=0; j<nargs; ++j) {
++      code.push(["p",j,"+=d",j,"s",i].join(""))
++    }
++    if(has_index) {
++      if(i > 0) {
++        code.push(["index[",pidx,"]-=s",pidx].join(""))
++      }
++      code.push(["++index[",idx,"]"].join(""))
++    }
++    code.push("}")
++  }
++  return code.join("\n")
++}
++
++// Generate "outer" loops that loop over blocks of data, applying "inner" loops to the blocks by manipulating the local variables in such a way that the inner loop only "sees" the current block.
++// TODO: If this is used, then the previous declaration (done by generateCwiseOp) of s* is essentially unnecessary.
++//       I believe the s* are not used elsewhere (in particular, I don't think they're used in the pre/post parts and "shape" is defined independently), so it would be possible to make defining the s* dependent on what loop method is being used.
++function outerFill(matched, order, proc, body) {
++  var dimension = order.length
++    , nargs = proc.arrayArgs.length
++    , blockSize = proc.blockSize
++    , has_index = proc.indexArgs.length > 0
++    , code = []
++  for(var i=0; i<nargs; ++i) {
++    code.push(["var offset",i,"=p",i].join(""))
++  }
++  //Generate loops for unmatched dimensions
++  // The order in which these dimensions are traversed is fairly arbitrary (from small stride to large stride, for the first argument)
++  // TODO: It would be nice if the order in which these loops are placed would also be somehow "optimal" (at the very least we should check that it really doesn't hurt us if they're not).
++  for(var i=matched; i<dimension; ++i) {
++    code.push(["for(var j"+i+"=SS[", order[i], "]|0;j", i, ">0;){"].join("")) // Iterate back to front
++    code.push(["if(j",i,"<",blockSize,"){"].join("")) // Either decrease j by blockSize (s = blockSize), or set it to zero (after setting s = j).
++    code.push(["s",order[i],"=j",i].join(""))
++    code.push(["j",i,"=0"].join(""))
++    code.push(["}else{s",order[i],"=",blockSize].join(""))
++    code.push(["j",i,"-=",blockSize,"}"].join(""))
++    if(has_index) {
++      code.push(["index[",order[i],"]=j",i].join(""))
++    }
++  }
++  for(var i=0; i<nargs; ++i) {
++    var indexStr = ["offset"+i]
++    for(var j=matched; j<dimension; ++j) {
++      indexStr.push(["j",j,"*t",i,"p",order[j]].join(""))
++    }
++    code.push(["p",i,"=(",indexStr.join("+"),")"].join(""))
++  }
++  code.push(innerFill(order, proc, body))
++  for(var i=matched; i<dimension; ++i) {
++    code.push("}")
++  }
++  return code.join("\n")
++}
++
++//Count the number of compatible inner orders
++// This is the length of the longest common prefix of the arrays in orders.
++// Each array in orders lists the dimensions of the correspond ndarray in order of increasing stride.
++// This is thus the maximum number of dimensions that can be efficiently traversed by simple nested loops for all arrays.
++function countMatches(orders) {
++  var matched = 0, dimension = orders[0].length
++  while(matched < dimension) {
++    for(var j=1; j<orders.length; ++j) {
++      if(orders[j][matched] !== orders[0][matched]) {
++        return matched
++      }
++    }
++    ++matched
++  }
++  return matched
++}
++
++//Processes a block according to the given data types
++// Replaces variable names by different ones, either "local" ones (that are then ferried in and out of the given array) or ones matching the arguments that the function performing the ultimate loop will accept.
++function processBlock(block, proc, dtypes) {
++  var code = block.body
++  var pre = []
++  var post = []
++  for(var i=0; i<block.args.length; ++i) {
++    var carg = block.args[i]
++    if(carg.count <= 0) {
++      continue
++    }
++    var re = new RegExp(carg.name, "g")
++    var ptrStr = ""
++    var arrNum = proc.arrayArgs.indexOf(i)
++    switch(proc.argTypes[i]) {
++      case "offset":
++        var offArgIndex = proc.offsetArgIndex.indexOf(i)
++        var offArg = proc.offsetArgs[offArgIndex]
++        arrNum = offArg.array
++        ptrStr = "+q" + offArgIndex // Adds offset to the "pointer" in the array
++      case "array":
++        ptrStr = "p" + arrNum + ptrStr
++        var localStr = "l" + i
++        var arrStr = "a" + arrNum
++        if (proc.arrayBlockIndices[arrNum] === 0) { // Argument to body is just a single value from this array
++          if(carg.count === 1) { // Argument/array used only once(?)
++            if(dtypes[arrNum] === "generic") {
++              if(carg.lvalue) {
++                pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
++                code = code.replace(re, localStr)
++                post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
++              } else {
++                code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
++              }
++            } else {
++              code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
++            }
++          } else if(dtypes[arrNum] === "generic") {
++            pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
++            code = code.replace(re, localStr)
++            if(carg.lvalue) {
++              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
++            }
++          } else {
++            pre.push(["var ", localStr, "=", arrStr, "[", ptrStr, "]"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
++            code = code.replace(re, localStr)
++            if(carg.lvalue) {
++              post.push([arrStr, "[", ptrStr, "]=", localStr].join(""))
++            }
++          }
++        } else { // Argument to body is a "block"
++          var reStrArr = [carg.name], ptrStrArr = [ptrStr]
++          for(var j=0; j<Math.abs(proc.arrayBlockIndices[arrNum]); j++) {
++            reStrArr.push("\\s*\\[([^\\]]+)\\]")
++            ptrStrArr.push("$" + (j+1) + "*t" + arrNum + "b" + j) // Matched index times stride
++          }
++          re = new RegExp(reStrArr.join(""), "g")
++          ptrStr = ptrStrArr.join("+")
++          if(dtypes[arrNum] === "generic") {
++            /*if(carg.lvalue) {
++              pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
++              code = code.replace(re, localStr)
++              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
++            } else {
++              code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
++            }*/
++            throw new Error("cwise: Generic arrays not supported in combination with blocks!")
++          } else {
++            // This does not produce any local variables, even if variables are used multiple times. It would be possible to do so, but it would complicate things quite a bit.
++            code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
++          }
++        }
++      break
++      case "scalar":
++        code = code.replace(re, "Y" + proc.scalarArgs.indexOf(i))
++      break
++      case "index":
++        code = code.replace(re, "index")
++      break
++      case "shape":
++        code = code.replace(re, "shape")
++      break
++    }
++  }
++  return [pre.join("\n"), code, post.join("\n")].join("\n").trim()
++}
++
++function typeSummary(dtypes) {
++  var summary = new Array(dtypes.length)
++  var allEqual = true
++  for(var i=0; i<dtypes.length; ++i) {
++    var t = dtypes[i]
++    var digits = t.match(/\d+/)
++    if(!digits) {
++      digits = ""
++    } else {
++      digits = digits[0]
++    }
++    if(t.charAt(0) === 0) {
++      summary[i] = "u" + t.charAt(1) + digits
++    } else {
++      summary[i] = t.charAt(0) + digits
++    }
++    if(i > 0) {
++      allEqual = allEqual && summary[i] === summary[i-1]
++    }
++  }
++  if(allEqual) {
++    return summary[0]
++  }
++  return summary.join("")
++}
++
++//Generates a cwise operator
++function generateCWiseOp(proc, typesig) {
++
++  //Compute dimension
++  // Arrays get put first in typesig, and there are two entries per array (dtype and order), so this gets the number of dimensions in the first array arg.
++  var dimension = (typesig[1].length - Math.abs(proc.arrayBlockIndices[0]))|0
++  var orders = new Array(proc.arrayArgs.length)
++  var dtypes = new Array(proc.arrayArgs.length)
++  for(var i=0; i<proc.arrayArgs.length; ++i) {
++    dtypes[i] = typesig[2*i]
++    orders[i] = typesig[2*i+1]
++  }
++  
++  //Determine where block and loop indices start and end
++  var blockBegin = [], blockEnd = [] // These indices are exposed as blocks
++  var loopBegin = [], loopEnd = [] // These indices are iterated over
++  var loopOrders = [] // orders restricted to the loop indices
++  for(var i=0; i<proc.arrayArgs.length; ++i) {
++    if (proc.arrayBlockIndices[i]<0) {
++      loopBegin.push(0)
++      loopEnd.push(dimension)
++      blockBegin.push(dimension)
++      blockEnd.push(dimension+proc.arrayBlockIndices[i])
++    } else {
++      loopBegin.push(proc.arrayBlockIndices[i]) // Non-negative
++      loopEnd.push(proc.arrayBlockIndices[i]+dimension)
++      blockBegin.push(0)
++      blockEnd.push(proc.arrayBlockIndices[i])
++    }
++    var newOrder = []
++    for(var j=0; j<orders[i].length; j++) {
++      if (loopBegin[i]<=orders[i][j] && orders[i][j]<loopEnd[i]) {
++        newOrder.push(orders[i][j]-loopBegin[i]) // If this is a loop index, put it in newOrder, subtracting loopBegin, to make sure that all loopOrders are using a common set of indices.
++      }
++    }
++    loopOrders.push(newOrder)
++  }
++
++  //First create arguments for procedure
++  var arglist = ["SS"] // SS is the overall shape over which we iterate
++  var code = ["'use strict'"]
++  var vars = []
++  
++  for(var j=0; j<dimension; ++j) {
++    vars.push(["s", j, "=SS[", j, "]"].join("")) // The limits for each dimension.
++  }
++  for(var i=0; i<proc.arrayArgs.length; ++i) {
++    arglist.push("a"+i) // Actual data array
++    arglist.push("t"+i) // Strides
++    arglist.push("p"+i) // Offset in the array at which the data starts (also used for iterating over the data)
++    
++    for(var j=0; j<dimension; ++j) { // Unpack the strides into vars for looping
++      vars.push(["t",i,"p",j,"=t",i,"[",loopBegin[i]+j,"]"].join(""))
++    }
++    
++    for(var j=0; j<Math.abs(proc.arrayBlockIndices[i]); ++j) { // Unpack the strides into vars for block iteration
++      vars.push(["t",i,"b",j,"=t",i,"[",blockBegin[i]+j,"]"].join(""))
++    }
++  }
++  for(var i=0; i<proc.scalarArgs.length; ++i) {
++    arglist.push("Y" + i)
++  }
++  if(proc.shapeArgs.length > 0) {
++    vars.push("shape=SS.slice(0)") // Makes the shape over which we iterate available to the user defined functions (so you can use width/height for example)
++  }
++  if(proc.indexArgs.length > 0) {
++    // Prepare an array to keep track of the (logical) indices, initialized to dimension zeroes.
++    var zeros = new Array(dimension)
++    for(var i=0; i<dimension; ++i) {
++      zeros[i] = "0"
++    }
++    vars.push(["index=[", zeros.join(","), "]"].join(""))
++  }
++  for(var i=0; i<proc.offsetArgs.length; ++i) { // Offset arguments used for stencil operations
++    var off_arg = proc.offsetArgs[i]
++    var init_string = []
++    for(var j=0; j<off_arg.offset.length; ++j) {
++      if(off_arg.offset[j] === 0) {
++        continue
++      } else if(off_arg.offset[j] === 1) {
++        init_string.push(["t", off_arg.array, "p", j].join(""))      
++      } else {
++        init_string.push([off_arg.offset[j], "*t", off_arg.array, "p", j].join(""))
++      }
++    }
++    if(init_string.length === 0) {
++      vars.push("q" + i + "=0")
++    } else {
++      vars.push(["q", i, "=", init_string.join("+")].join(""))
++    }
++  }
++
++  //Prepare this variables
++  var thisVars = uniq([].concat(proc.pre.thisVars)
++                      .concat(proc.body.thisVars)
++                      .concat(proc.post.thisVars))
++  vars = vars.concat(thisVars)
++  code.push("var " + vars.join(","))
++  for(var i=0; i<proc.arrayArgs.length; ++i) {
++    code.push("p"+i+"|=0")
++  }
++  
++  //Inline prelude
++  if(proc.pre.body.length > 3) {
++    code.push(processBlock(proc.pre, proc, dtypes))
++  }
++
++  //Process body
++  var body = processBlock(proc.body, proc, dtypes)
++  var matched = countMatches(loopOrders)
++  if(matched < dimension) {
++    code.push(outerFill(matched, loopOrders[0], proc, body)) // TODO: Rather than passing loopOrders[0], it might be interesting to look at passing an order that represents the majority of the arguments for example.
++  } else {
++    code.push(innerFill(loopOrders[0], proc, body))
++  }
++
++  //Inline epilog
++  if(proc.post.body.length > 3) {
++    code.push(processBlock(proc.post, proc, dtypes))
++  }
++  
++  if(proc.debug) {
++    console.log("-----Generated cwise routine for ", typesig, ":\n" + code.join("\n") + "\n----------")
++  }
++  
++  var loopName = [(proc.funcName||"unnamed"), "_cwise_loop_", orders[0].join("s"),"m",matched,typeSummary(dtypes)].join("")
++  var f = new Function(["function ",loopName,"(", arglist.join(","),"){", code.join("\n"),"} return ", loopName].join(""))
++  return f()
++}
++module.exports = generateCWiseOp
+ 
+-//1D sweep event queue stuff (use pool to save space)
+-var INIT_CAPACITY      = 1024
+-var RED_SWEEP_QUEUE    = pool.mallocInt32(INIT_CAPACITY)
+-var RED_SWEEP_INDEX    = pool.mallocInt32(INIT_CAPACITY)
+-var BLUE_SWEEP_QUEUE   = pool.mallocInt32(INIT_CAPACITY)
+-var BLUE_SWEEP_INDEX   = pool.mallocInt32(INIT_CAPACITY)
+-var COMMON_SWEEP_QUEUE = pool.mallocInt32(INIT_CAPACITY)
+-var COMMON_SWEEP_INDEX = pool.mallocInt32(INIT_CAPACITY)
+-var SWEEP_EVENTS       = pool.mallocDouble(INIT_CAPACITY * 8)
++},{"uniq":164}],52:[function(require,module,exports){
++"use strict"
++
++// The function below is called when constructing a cwise function object, and does the following:
++// A function object is constructed which accepts as argument a compilation function and returns another function.
++// It is this other function that is eventually returned by createThunk, and this function is the one that actually
++// checks whether a certain pattern of arguments has already been used before and compiles new loops as needed.
++// The compilation passed to the first function object is used for compiling new functions.
++// Once this function object is created, it is called with compile as argument, where the first argument of compile
++// is bound to "proc" (essentially containing a preprocessed version of the user arguments to cwise).
++// So createThunk roughly works like this:
++// function createThunk(proc) {
++//   var thunk = function(compileBound) {
++//     var CACHED = {}
++//     return function(arrays and scalars) {
++//       if (dtype and order of arrays in CACHED) {
++//         var func = CACHED[dtype and order of arrays]
++//       } else {
++//         var func = CACHED[dtype and order of arrays] = compileBound(dtype and order of arrays)
++//       }
++//       return func(arrays and scalars)
++//     }
++//   }
++//   return thunk(compile.bind1(proc))
++// }
++
++var compile = require("./compile.js")
++
++function createThunk(proc) {
++  var code = ["'use strict'", "var CACHED={}"]
++  var vars = []
++  var thunkName = proc.funcName + "_cwise_thunk"
++  
++  //Build thunk
++  code.push(["return function ", thunkName, "(", proc.shimArgs.join(","), "){"].join(""))
++  var typesig = []
++  var string_typesig = []
++  var proc_args = [["array",proc.arrayArgs[0],".shape.slice(", // Slice shape so that we only retain the shape over which we iterate (which gets passed to the cwise operator as SS).
++                    Math.max(0,proc.arrayBlockIndices[0]),proc.arrayBlockIndices[0]<0?(","+proc.arrayBlockIndices[0]+")"):")"].join("")]
++  var shapeLengthConditions = [], shapeConditions = []
++  // Process array arguments
++  for(var i=0; i<proc.arrayArgs.length; ++i) {
++    var j = proc.arrayArgs[i]
++    vars.push(["t", j, "=array", j, ".dtype,",
++               "r", j, "=array", j, ".order"].join(""))
++    typesig.push("t" + j)
++    typesig.push("r" + j)
++    string_typesig.push("t"+j)
++    string_typesig.push("r"+j+".join()")
++    proc_args.push("array" + j + ".data")
++    proc_args.push("array" + j + ".stride")
++    proc_args.push("array" + j + ".offset|0")
++    if (i>0) { // Gather conditions to check for shape equality (ignoring block indices)
++      shapeLengthConditions.push("array" + proc.arrayArgs[0] + ".shape.length===array" + j + ".shape.length+" + (Math.abs(proc.arrayBlockIndices[0])-Math.abs(proc.arrayBlockIndices[i])))
++      shapeConditions.push("array" + proc.arrayArgs[0] + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[0]) + "]===array" + j + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[i]) + "]")
++    }
++  }
++  // Check for shape equality
++  if (proc.arrayArgs.length > 1) {
++    code.push("if (!(" + shapeLengthConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same dimensionality!')")
++    code.push("for(var shapeIndex=array" + proc.arrayArgs[0] + ".shape.length-" + Math.abs(proc.arrayBlockIndices[0]) + "; shapeIndex-->0;) {")
++    code.push("if (!(" + shapeConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same shape!')")
++    code.push("}")
++  }
++  // Process scalar arguments
++  for(var i=0; i<proc.scalarArgs.length; ++i) {
++    proc_args.push("scalar" + proc.scalarArgs[i])
++  }
++  // Check for cached function (and if not present, generate it)
++  vars.push(["type=[", string_typesig.join(","), "].join()"].join(""))
++  vars.push("proc=CACHED[type]")
++  code.push("var " + vars.join(","))
++  
++  code.push(["if(!proc){",
++             "CACHED[type]=proc=compile([", typesig.join(","), "])}",
++             "return proc(", proc_args.join(","), ")}"].join(""))
++
++  if(proc.debug) {
++    console.log("-----Generated thunk:\n" + code.join("\n") + "\n----------")
++  }
++  
++  //Compile thunk
++  var thunk = new Function("compile", code.join("\n"))
++  return thunk(compile.bind(undefined, proc))
++}
++
++module.exports = createThunk
+ 
+-//Reserves memory for the 1D sweep data structures
+-function sqInit(count) {
+-  var rcount = bits.nextPow2(count)
+-  if(RED_SWEEP_QUEUE.length < rcount) {
+-    pool.free(RED_SWEEP_QUEUE)
+-    RED_SWEEP_QUEUE = pool.mallocInt32(rcount)
++},{"./compile.js":51}],53:[function(require,module,exports){
++module.exports = require("cwise-compiler")
++},{"cwise-compiler":50}],54:[function(require,module,exports){
++!function() {
++  var d3 = {
++    version: "3.5.17"
++  };
++  var d3_arraySlice = [].slice, d3_array = function(list) {
++    return d3_arraySlice.call(list);
++  };
++  var d3_document = this.document;
++  function d3_documentElement(node) {
++    return node && (node.ownerDocument || node.document || node).documentElement;
+   }
+-  if(RED_SWEEP_INDEX.length < rcount) {
+-    pool.free(RED_SWEEP_INDEX)
+-    RED_SWEEP_INDEX = pool.mallocInt32(rcount)
++  function d3_window(node) {
++    return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
+   }
+-  if(BLUE_SWEEP_QUEUE.length < rcount) {
+-    pool.free(BLUE_SWEEP_QUEUE)
+-    BLUE_SWEEP_QUEUE = pool.mallocInt32(rcount)
++  if (d3_document) {
++    try {
++      d3_array(d3_document.documentElement.childNodes)[0].nodeType;
++    } catch (e) {
++      d3_array = function(list) {
++        var i = list.length, array = new Array(i);
++        while (i--) array[i] = list[i];
++        return array;
++      };
++    }
+   }
+-  if(BLUE_SWEEP_INDEX.length < rcount) {
+-    pool.free(BLUE_SWEEP_INDEX)
+-    BLUE_SWEEP_INDEX = pool.mallocInt32(rcount)
++  if (!Date.now) Date.now = function() {
++    return +new Date();
++  };
++  if (d3_document) {
++    try {
++      d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
++    } catch (error) {
++      var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
++      d3_element_prototype.setAttribute = function(name, value) {
++        d3_element_setAttribute.call(this, name, value + "");
++      };
++      d3_element_prototype.setAttributeNS = function(space, local, value) {
++        d3_element_setAttributeNS.call(this, space, local, value + "");
++      };
++      d3_style_prototype.setProperty = function(name, value, priority) {
++        d3_style_setProperty.call(this, name, value + "", priority);
++      };
++    }
+   }
+-  if(COMMON_SWEEP_QUEUE.length < rcount) {
+-    pool.free(COMMON_SWEEP_QUEUE)
+-    COMMON_SWEEP_QUEUE = pool.mallocInt32(rcount)
++  d3.ascending = d3_ascending;
++  function d3_ascending(a, b) {
++    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
+   }
+-  if(COMMON_SWEEP_INDEX.length < rcount) {
+-    pool.free(COMMON_SWEEP_INDEX)
+-    COMMON_SWEEP_INDEX = pool.mallocInt32(rcount)
+-  }
+-  var eventLength = 8 * rcount
+-  if(SWEEP_EVENTS.length < eventLength) {
+-    pool.free(SWEEP_EVENTS)
+-    SWEEP_EVENTS = pool.mallocDouble(eventLength)
+-  }
+-}
+-
+-//Remove an item from the active queue in O(1)
+-function sqPop(queue, index, count, item) {
+-  var idx = index[item]
+-  var top = queue[count-1]
+-  queue[idx] = top
+-  index[top] = idx
+-}
+-
+-//Insert an item into the active queue in O(1)
+-function sqPush(queue, index, count, item) {
+-  queue[count] = item
+-  index[item]  = count
+-}
+-
+-//Recursion base case: use 1D sweep algorithm
+-function sweepBipartite(
+-    d, visit,
+-    redStart,  redEnd, red, redIndex,
+-    blueStart, blueEnd, blue, blueIndex) {
+-
+-  //store events as pairs [coordinate, idx]
+-  //
+-  //  red create:  -(idx+1)
+-  //  red destroy: idx
+-  //  blue create: -(idx+BLUE_FLAG)
+-  //  blue destroy: idx+BLUE_FLAG
+-  //
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = d-1
+-  var iend     = elemSize-1
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = redIndex[i]
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -(idx+1)
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = blueIndex[i]+BLUE_FLAG
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive  = 0
+-  var blueActive = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e >= BLUE_FLAG) {
+-      //blue destroy event
+-      e = (e-BLUE_FLAG)|0
+-      sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, e)
+-    } else if(e >= 0) {
+-      //red destroy event
+-      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e)
+-    } else if(e <= -BLUE_FLAG) {
+-      //blue create event
+-      e = (-e-BLUE_FLAG)|0
+-      for(var j=0; j<redActive; ++j) {
+-        var retval = visit(RED_SWEEP_QUEUE[j], e)
+-        if(retval !== void 0) {
+-          return retval
+-        }
++  d3.descending = function(a, b) {
++    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
++  };
++  d3.min = function(array, f) {
++    var i = -1, n = array.length, a, b;
++    if (arguments.length === 1) {
++      while (++i < n) if ((b = array[i]) != null && b >= b) {
++        a = b;
++        break;
+       }
+-      sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, e)
++      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
+     } else {
+-      //red create event
+-      e = (-e-1)|0
+-      for(var j=0; j<blueActive; ++j) {
+-        var retval = visit(e, BLUE_SWEEP_QUEUE[j])
+-        if(retval !== void 0) {
+-          return retval
+-        }
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
++        a = b;
++        break;
+       }
+-      sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, e)
+-    }
+-  }
+-}
+-
+-//Complete sweep
+-function sweepComplete(d, visit, 
+-  redStart, redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = d-1
+-  var iend     = elemSize-1
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = (redIndex[i]+1)<<1
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = (blueIndex[i]+1)<<1
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = (-idx)|1
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx|1
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  var blueActive   = 0
+-  var commonActive = 0
+-  for(var i=0; i<n; ++i) {
+-    var e     = SWEEP_EVENTS[2*i+1]|0
+-    var color = e&1
+-    if(i < n-1 && (e>>1) === (SWEEP_EVENTS[2*i+3]>>1)) {
+-      color = 2
+-      i += 1
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
+     }
+-    
+-    if(e < 0) {
+-      //Create event
+-      var id = -(e>>1) - 1
+-
+-      //Intersect with common
+-      for(var j=0; j<commonActive; ++j) {
+-        var retval = visit(COMMON_SWEEP_QUEUE[j], id)
+-        if(retval !== void 0) {
+-          return retval
+-        }
++    return a;
++  };
++  d3.max = function(array, f) {
++    var i = -1, n = array.length, a, b;
++    if (arguments.length === 1) {
++      while (++i < n) if ((b = array[i]) != null && b >= b) {
++        a = b;
++        break;
+       }
+-
+-      if(color !== 0) {
+-        //Intersect with red
+-        for(var j=0; j<redActive; ++j) {
+-          var retval = visit(RED_SWEEP_QUEUE[j], id)
+-          if(retval !== void 0) {
+-            return retval
+-          }
+-        }
++      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
++    } else {
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
++        a = b;
++        break;
+       }
+-
+-      if(color !== 1) {
+-        //Intersect with blue
+-        for(var j=0; j<blueActive; ++j) {
+-          var retval = visit(BLUE_SWEEP_QUEUE[j], id)
+-          if(retval !== void 0) {
+-            return retval
+-          }
+-        }
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
++    }
++    return a;
++  };
++  d3.extent = function(array, f) {
++    var i = -1, n = array.length, a, b, c;
++    if (arguments.length === 1) {
++      while (++i < n) if ((b = array[i]) != null && b >= b) {
++        a = c = b;
++        break;
+       }
+-
+-      if(color === 0) {
+-        //Red
+-        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, id)
+-      } else if(color === 1) {
+-        //Blue
+-        sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, id)
+-      } else if(color === 2) {
+-        //Both
+-        sqPush(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive++, id)
++      while (++i < n) if ((b = array[i]) != null) {
++        if (a > b) a = b;
++        if (c < b) c = b;
+       }
+     } else {
+-      //Destroy event
+-      var id = (e>>1) - 1
+-      if(color === 0) {
+-        //Red
+-        sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, id)
+-      } else if(color === 1) {
+-        //Blue
+-        sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, id)
+-      } else if(color === 2) {
+-        //Both
+-        sqPop(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive--, id)
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
++        a = c = b;
++        break;
++      }
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
++        if (a > b) a = b;
++        if (c < b) c = b;
+       }
+     }
++    return [ a, c ];
++  };
++  function d3_number(x) {
++    return x === null ? NaN : +x;
+   }
+-}
+-
+-//Sweep and prune/scanline algorithm:
+-//  Scan along axis, detect intersections
+-//  Brute force all boxes along axis
+-function scanBipartite(
+-  d, axis, visit, flip,
+-  redStart,  redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-  
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = axis
+-  var iend     = axis+d
+-
+-  var redShift  = 1
+-  var blueShift = 1
+-  if(flip) {
+-    blueShift = BLUE_FLAG
+-  } else {
+-    redShift  = BLUE_FLAG
+-  }
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = i + redShift
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = i + blueShift
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
++  function d3_numeric(x) {
++    return !isNaN(x);
+   }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e < 0) {
+-      var idx   = -e
+-      var isRed = false
+-      if(idx >= BLUE_FLAG) {
+-        isRed = !flip
+-        idx -= BLUE_FLAG 
+-      } else {
+-        isRed = !!flip
+-        idx -= 1
+-      }
+-      if(isRed) {
+-        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, idx)
+-      } else {
+-        var blueId  = blueIndex[idx]
+-        var bluePtr = elemSize * idx
+-        
+-        var b0 = blue[bluePtr+axis+1]
+-        var b1 = blue[bluePtr+axis+1+d]
+-
+-red_loop:
+-        for(var j=0; j<redActive; ++j) {
+-          var oidx   = RED_SWEEP_QUEUE[j]
+-          var redPtr = elemSize * oidx
+-
+-          if(b1 < red[redPtr+axis+1] || 
+-             red[redPtr+axis+1+d] < b0) {
+-            continue
+-          }
+-
+-          for(var k=axis+2; k<d; ++k) {
+-            if(blue[bluePtr + k + d] < red[redPtr + k] || 
+-               red[redPtr + k + d] < blue[bluePtr + k]) {
+-              continue red_loop
+-            }
+-          }
+-
+-          var redId  = redIndex[oidx]
+-          var retval
+-          if(flip) {
+-            retval = visit(blueId, redId)
+-          } else {
+-            retval = visit(redId, blueId)
+-          }
+-          if(retval !== void 0) {
+-            return retval 
+-          }
+-        }
+-      }
++  d3.sum = function(array, f) {
++    var s = 0, n = array.length, a, i = -1;
++    if (arguments.length === 1) {
++      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
+     } else {
+-      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e - redShift)
++      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
+     }
+-  }
+-}
+-
+-function scanComplete(
+-  d, axis, visit,
+-  redStart,  redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = axis
+-  var iend     = axis+d
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = i + BLUE_FLAG
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = i + 1
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e < 0) {
+-      var idx   = -e
+-      if(idx >= BLUE_FLAG) {
+-        RED_SWEEP_QUEUE[redActive++] = idx - BLUE_FLAG
+-      } else {
+-        idx -= 1
+-        var blueId  = blueIndex[idx]
+-        var bluePtr = elemSize * idx
+-
+-        var b0 = blue[bluePtr+axis+1]
+-        var b1 = blue[bluePtr+axis+1+d]
+-
+-red_loop:
+-        for(var j=0; j<redActive; ++j) {
+-          var oidx   = RED_SWEEP_QUEUE[j]
+-          var redId  = redIndex[oidx]
+-
+-          if(redId === blueId) {
+-            break
+-          }
+-
+-          var redPtr = elemSize * oidx
+-          if(b1 < red[redPtr+axis+1] || 
+-            red[redPtr+axis+1+d] < b0) {
+-            continue
+-          }
+-          for(var k=axis+2; k<d; ++k) {
+-            if(blue[bluePtr + k + d] < red[redPtr + k] || 
+-               red[redPtr + k + d]   < blue[bluePtr + k]) {
+-              continue red_loop
+-            }
+-          }
+-
+-          var retval = visit(redId, blueId)
+-          if(retval !== void 0) {
+-            return retval 
+-          }
++    return s;
++  };
++  d3.mean = function(array, f) {
++    var s = 0, n = array.length, a, i = -1, j = n;
++    if (arguments.length === 1) {
++      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
++    } else {
++      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
++    }
++    if (j) return s / j;
++  };
++  d3.quantile = function(values, p) {
++    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
++    return e ? v + e * (values[h] - v) : v;
++  };
++  d3.median = function(array, f) {
++    var numbers = [], n = array.length, a, i = -1;
++    if (arguments.length === 1) {
++      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
++    } else {
++      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
++    }
++    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
++  };
++  d3.variance = function(array, f) {
++    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
++    if (arguments.length === 1) {
++      while (++i < n) {
++        if (d3_numeric(a = d3_number(array[i]))) {
++          d = a - m;
++          m += d / ++j;
++          s += d * (a - m);
+         }
+       }
+     } else {
+-      var idx = e - BLUE_FLAG
+-      for(var j=redActive-1; j>=0; --j) {
+-        if(RED_SWEEP_QUEUE[j] === idx) {
+-          for(var k=j+1; k<redActive; ++k) {
+-            RED_SWEEP_QUEUE[k-1] = RED_SWEEP_QUEUE[k]
+-          }
+-          break
++      while (++i < n) {
++        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
++          d = a - m;
++          m += d / ++j;
++          s += d * (a - m);
+         }
+       }
+-      --redActive
+     }
++    if (j > 1) return s / (j - 1);
++  };
++  d3.deviation = function() {
++    var v = d3.variance.apply(this, arguments);
++    return v ? Math.sqrt(v) : v;
++  };
++  function d3_bisector(compare) {
++    return {
++      left: function(a, x, lo, hi) {
++        if (arguments.length < 3) lo = 0;
++        if (arguments.length < 4) hi = a.length;
++        while (lo < hi) {
++          var mid = lo + hi >>> 1;
++          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
++        }
++        return lo;
++      },
++      right: function(a, x, lo, hi) {
++        if (arguments.length < 3) lo = 0;
++        if (arguments.length < 4) hi = a.length;
++        while (lo < hi) {
++          var mid = lo + hi >>> 1;
++          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
++        }
++        return lo;
++      }
++    };
+   }
+-}
+-},{"./sort":47,"bit-twiddle":9,"typedarray-pool":151}],49:[function(require,module,exports){
+-(function (Buffer){
+-var hasTypedArrays = false
+-if(typeof Float64Array !== "undefined") {
+-  var DOUBLE_VIEW = new Float64Array(1)
+-    , UINT_VIEW   = new Uint32Array(DOUBLE_VIEW.buffer)
+-  DOUBLE_VIEW[0] = 1.0
+-  hasTypedArrays = true
+-  if(UINT_VIEW[1] === 0x3ff00000) {
+-    //Use little endian
+-    module.exports = function doubleBitsLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return [ UINT_VIEW[0], UINT_VIEW[1] ]
+-    }
+-    function toDoubleLE(lo, hi) {
+-      UINT_VIEW[0] = lo
+-      UINT_VIEW[1] = hi
+-      return DOUBLE_VIEW[0]
++  var d3_bisect = d3_bisector(d3_ascending);
++  d3.bisectLeft = d3_bisect.left;
++  d3.bisect = d3.bisectRight = d3_bisect.right;
++  d3.bisector = function(f) {
++    return d3_bisector(f.length === 1 ? function(d, x) {
++      return d3_ascending(f(d), x);
++    } : f);
++  };
++  d3.shuffle = function(array, i0, i1) {
++    if ((m = arguments.length) < 3) {
++      i1 = array.length;
++      if (m < 2) i0 = 0;
+     }
+-    module.exports.pack = toDoubleLE
+-    function lowUintLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[0]
+-    }
+-    module.exports.lo = lowUintLE
+-    function highUintLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[1]
++    var m = i1 - i0, t, i;
++    while (m) {
++      i = Math.random() * m-- | 0;
++      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
+     }
+-    module.exports.hi = highUintLE
+-  } else if(UINT_VIEW[0] === 0x3ff00000) {
+-    //Use big endian
+-    module.exports = function doubleBitsBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return [ UINT_VIEW[1], UINT_VIEW[0] ]
++    return array;
++  };
++  d3.permute = function(array, indexes) {
++    var i = indexes.length, permutes = new Array(i);
++    while (i--) permutes[i] = array[indexes[i]];
++    return permutes;
++  };
++  d3.pairs = function(array) {
++    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
++    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
++    return pairs;
++  };
++  d3.transpose = function(matrix) {
++    if (!(n = matrix.length)) return [];
++    for (var i = -1, m = d3.min(matrix, d3_transposeLength), transpose = new Array(m); ++i < m; ) {
++      for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n; ) {
++        row[j] = matrix[j][i];
++      }
+     }
+-    function toDoubleBE(lo, hi) {
+-      UINT_VIEW[1] = lo
+-      UINT_VIEW[0] = hi
+-      return DOUBLE_VIEW[0]
++    return transpose;
++  };
++  function d3_transposeLength(d) {
++    return d.length;
++  }
++  d3.zip = function() {
++    return d3.transpose(arguments);
++  };
++  d3.keys = function(map) {
++    var keys = [];
++    for (var key in map) keys.push(key);
++    return keys;
++  };
++  d3.values = function(map) {
++    var values = [];
++    for (var key in map) values.push(map[key]);
++    return values;
++  };
++  d3.entries = function(map) {
++    var entries = [];
++    for (var key in map) entries.push({
++      key: key,
++      value: map[key]
++    });
++    return entries;
++  };
++  d3.merge = function(arrays) {
++    var n = arrays.length, m, i = -1, j = 0, merged, array;
++    while (++i < n) j += arrays[i].length;
++    merged = new Array(j);
++    while (--n >= 0) {
++      array = arrays[n];
++      m = array.length;
++      while (--m >= 0) {
++        merged[--j] = array[m];
++      }
+     }
+-    module.exports.pack = toDoubleBE
+-    function lowUintBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[1]
++    return merged;
++  };
++  var abs = Math.abs;
++  d3.range = function(start, stop, step) {
++    if (arguments.length < 3) {
++      step = 1;
++      if (arguments.length < 2) {
++        stop = start;
++        start = 0;
++      }
+     }
+-    module.exports.lo = lowUintBE
+-    function highUintBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[0]
++    if ((stop - start) / step === Infinity) throw new Error("infinite range");
++    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
++    start *= k, stop *= k, step *= k;
++    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
++    return range;
++  };
++  function d3_range_integerScale(x) {
++    var k = 1;
++    while (x * k % 1) k *= 10;
++    return k;
++  }
++  function d3_class(ctor, properties) {
++    for (var key in properties) {
++      Object.defineProperty(ctor.prototype, key, {
++        value: properties[key],
++        enumerable: false
++      });
+     }
+-    module.exports.hi = highUintBE
+-  } else {
+-    hasTypedArrays = false
+   }
+-}
+-if(!hasTypedArrays) {
+-  var buffer = new Buffer(8)
+-  module.exports = function doubleBits(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return [ buffer.readUInt32LE(0, true), buffer.readUInt32LE(4, true) ]
++  d3.map = function(object, f) {
++    var map = new d3_Map();
++    if (object instanceof d3_Map) {
++      object.forEach(function(key, value) {
++        map.set(key, value);
++      });
++    } else if (Array.isArray(object)) {
++      var i = -1, n = object.length, o;
++      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
++    } else {
++      for (var key in object) map.set(key, object[key]);
++    }
++    return map;
++  };
++  function d3_Map() {
++    this._ = Object.create(null);
+   }
+-  function toDouble(lo, hi) {
+-    buffer.writeUInt32LE(lo, 0, true)
+-    buffer.writeUInt32LE(hi, 4, true)
+-    return buffer.readDoubleLE(0, true)
++  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
++  d3_class(d3_Map, {
++    has: d3_map_has,
++    get: function(key) {
++      return this._[d3_map_escape(key)];
++    },
++    set: function(key, value) {
++      return this._[d3_map_escape(key)] = value;
++    },
++    remove: d3_map_remove,
++    keys: d3_map_keys,
++    values: function() {
++      var values = [];
++      for (var key in this._) values.push(this._[key]);
++      return values;
++    },
++    entries: function() {
++      var entries = [];
++      for (var key in this._) entries.push({
++        key: d3_map_unescape(key),
++        value: this._[key]
++      });
++      return entries;
++    },
++    size: d3_map_size,
++    empty: d3_map_empty,
++    forEach: function(f) {
++      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
++    }
++  });
++  function d3_map_escape(key) {
++    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
+   }
+-  module.exports.pack = toDouble  
+-  function lowUint(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return buffer.readUInt32LE(0, true)
++  function d3_map_unescape(key) {
++    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
+   }
+-  module.exports.lo = lowUint
+-  function highUint(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return buffer.readUInt32LE(4, true)
++  function d3_map_has(key) {
++    return d3_map_escape(key) in this._;
+   }
+-  module.exports.hi = highUint
+-}
+-
+-module.exports.sign = function(n) {
+-  return module.exports.hi(n) >>> 31
+-}
+-
+-module.exports.exponent = function(n) {
+-  var b = module.exports.hi(n)
+-  return ((b<<1) >>> 21) - 1023
+-}
+-
+-module.exports.fraction = function(n) {
+-  var lo = module.exports.lo(n)
+-  var hi = module.exports.hi(n)
+-  var b = hi & ((1<<20) - 1)
+-  if(hi & 0x7ff00000) {
+-    b += (1<<20)
++  function d3_map_remove(key) {
++    return (key = d3_map_escape(key)) in this._ && delete this._[key];
+   }
+-  return [lo, b]
+-}
+-
+-module.exports.denormalized = function(n) {
+-  var hi = module.exports.hi(n)
+-  return !(hi & 0x7ff00000)
+-}
+-}).call(this,require("buffer").Buffer)
+-},{"buffer":10}],50:[function(require,module,exports){
+-"use strict"
+-
+-var doubleBits = require("double-bits")
+-
+-var SMALLEST_DENORM = Math.pow(2, -1074)
+-var UINT_MAX = (-1)>>>0
+-
+-module.exports = nextafter
+-
+-function nextafter(x, y) {
+-  if(isNaN(x) || isNaN(y)) {
+-    return NaN
++  function d3_map_keys() {
++    var keys = [];
++    for (var key in this._) keys.push(d3_map_unescape(key));
++    return keys;
+   }
+-  if(x === y) {
+-    return x
++  function d3_map_size() {
++    var size = 0;
++    for (var key in this._) ++size;
++    return size;
+   }
+-  if(x === 0) {
+-    if(y < 0) {
+-      return -SMALLEST_DENORM
+-    } else {
+-      return SMALLEST_DENORM
+-    }
++  function d3_map_empty() {
++    for (var key in this._) return false;
++    return true;
+   }
+-  var hi = doubleBits.hi(x)
+-  var lo = doubleBits.lo(x)
+-  if((y > x) === (x > 0)) {
+-    if(lo === UINT_MAX) {
+-      hi += 1
+-      lo = 0
+-    } else {
+-      lo += 1
++  d3.nest = function() {
++    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
++    function map(mapType, array, depth) {
++      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
++      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
++      while (++i < n) {
++        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
++          values.push(object);
++        } else {
++          valuesByKey.set(keyValue, [ object ]);
++        }
++      }
++      if (mapType) {
++        object = mapType();
++        setter = function(keyValue, values) {
++          object.set(keyValue, map(mapType, values, depth));
++        };
++      } else {
++        object = {};
++        setter = function(keyValue, values) {
++          object[keyValue] = map(mapType, values, depth);
++        };
++      }
++      valuesByKey.forEach(setter);
++      return object;
+     }
+-  } else {
+-    if(lo === 0) {
+-      lo = UINT_MAX
+-      hi -= 1
+-    } else {
+-      lo -= 1
++    function entries(map, depth) {
++      if (depth >= keys.length) return map;
++      var array = [], sortKey = sortKeys[depth++];
++      map.forEach(function(key, keyMap) {
++        array.push({
++          key: key,
++          values: entries(keyMap, depth)
++        });
++      });
++      return sortKey ? array.sort(function(a, b) {
++        return sortKey(a.key, b.key);
++      }) : array;
+     }
++    nest.map = function(array, mapType) {
++      return map(mapType, array, 0);
++    };
++    nest.entries = function(array) {
++      return entries(map(d3.map, array, 0), 0);
++    };
++    nest.key = function(d) {
++      keys.push(d);
++      return nest;
++    };
++    nest.sortKeys = function(order) {
++      sortKeys[keys.length - 1] = order;
++      return nest;
++    };
++    nest.sortValues = function(order) {
++      sortValues = order;
++      return nest;
++    };
++    nest.rollup = function(f) {
++      rollup = f;
++      return nest;
++    };
++    return nest;
++  };
++  d3.set = function(array) {
++    var set = new d3_Set();
++    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
++    return set;
++  };
++  function d3_Set() {
++    this._ = Object.create(null);
+   }
+-  return doubleBits.pack(lo, hi)
+-}
+-},{"double-bits":49}],51:[function(require,module,exports){
+-'use strict'
+-
+-var bnadd = require('big-rat/add')
+-
+-module.exports = add
+-
+-function add(a, b) {
+-  var n = a.length
+-  var r = new Array(n)
+-    for(var i=0; i<n; ++i) {
+-    r[i] = bnadd(a[i], b[i])
+-  }
+-  return r
+-}
+-
+-},{"big-rat/add":25}],52:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = float2rat
+-
+-var rat = require('big-rat')
+-
+-function float2rat(v) {
+-  var result = new Array(v.length)
+-  for(var i=0; i<v.length; ++i) {
+-    result[i] = rat(v[i])
+-  }
+-  return result
+-}
+-
+-},{"big-rat":28}],53:[function(require,module,exports){
+-'use strict'
+-
+-var rat = require('big-rat')
+-var mul = require('big-rat/mul')
+-
+-module.exports = muls
+-
+-function muls(a, x) {
+-  var s = rat(x)
+-  var n = a.length
+-  var r = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    r[i] = mul(a[i], s)
++  d3_class(d3_Set, {
++    has: d3_map_has,
++    add: function(key) {
++      this._[d3_map_escape(key += "")] = true;
++      return key;
++    },
++    remove: d3_map_remove,
++    values: d3_map_keys,
++    size: d3_map_size,
++    empty: d3_map_empty,
++    forEach: function(f) {
++      for (var key in this._) f.call(this, d3_map_unescape(key));
++    }
++  });
++  d3.behavior = {};
++  function d3_identity(d) {
++    return d;
+   }
+-  return r
+-}
+-
+-},{"big-rat":28,"big-rat/mul":37}],54:[function(require,module,exports){
+-'use strict'
+-
+-var bnsub = require('big-rat/sub')
+-
+-module.exports = sub
+-
+-function sub(a, b) {
+-  var n = a.length
+-  var r = new Array(n)
+-    for(var i=0; i<n; ++i) {
+-    r[i] = bnsub(a[i], b[i])
++  d3.rebind = function(target, source) {
++    var i = 1, n = arguments.length, method;
++    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
++    return target;
++  };
++  function d3_rebind(target, source, method) {
++    return function() {
++      var value = method.apply(source, arguments);
++      return value === source ? target : value;
++    };
+   }
+-  return r
+-}
+-
+-},{"big-rat/sub":40}],55:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = segmentsIntersect
+-
+-var orient = require("robust-orientation")[3]
+-
+-function checkCollinear(a0, a1, b0, b1) {
+-
+-  for(var d=0; d<2; ++d) {
+-    var x0 = a0[d]
+-    var y0 = a1[d]
+-    var l0 = Math.min(x0, y0)
+-    var h0 = Math.max(x0, y0)    
+-
+-    var x1 = b0[d]
+-    var y1 = b1[d]
+-    var l1 = Math.min(x1, y1)
+-    var h1 = Math.max(x1, y1)    
+-
+-    if(h1 < l0 || h0 < l1) {
+-      return false
++  function d3_vendorSymbol(object, name) {
++    if (name in object) return name;
++    name = name.charAt(0).toUpperCase() + name.slice(1);
++    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
++      var prefixName = d3_vendorPrefixes[i] + name;
++      if (prefixName in object) return prefixName;
+     }
+   }
+-
+-  return true
+-}
+-
+-function segmentsIntersect(a0, a1, b0, b1) {
+-  var x0 = orient(a0, b0, b1)
+-  var y0 = orient(a1, b0, b1)
+-  if((x0 > 0 && y0 > 0) || (x0 < 0 && y0 < 0)) {
+-    return false
++  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
++  function d3_noop() {}
++  d3.dispatch = function() {
++    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
++    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
++    return dispatch;
++  };
++  function d3_dispatch() {}
++  d3_dispatch.prototype.on = function(type, listener) {
++    var i = type.indexOf("."), name = "";
++    if (i >= 0) {
++      name = type.slice(i + 1);
++      type = type.slice(0, i);
++    }
++    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
++    if (arguments.length === 2) {
++      if (listener == null) for (type in this) {
++        if (this.hasOwnProperty(type)) this[type].on(name, null);
++      }
++      return this;
++    }
++  };
++  function d3_dispatch_event(dispatch) {
++    var listeners = [], listenerByName = new d3_Map();
++    function event() {
++      var z = listeners, i = -1, n = z.length, l;
++      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
++      return dispatch;
++    }
++    event.on = function(name, listener) {
++      var l = listenerByName.get(name), i;
++      if (arguments.length < 2) return l && l.on;
++      if (l) {
++        l.on = null;
++        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
++        listenerByName.remove(name);
++      }
++      if (listener) listeners.push(listenerByName.set(name, {
++        on: listener
++      }));
++      return dispatch;
++    };
++    return event;
+   }
+-
+-  var x1 = orient(b0, a0, a1)
+-  var y1 = orient(b1, a0, a1)
+-  if((x1 > 0 && y1 > 0) || (x1 < 0 && y1 < 0)) {
+-    return false
++  d3.event = null;
++  function d3_eventPreventDefault() {
++    d3.event.preventDefault();
+   }
+-
+-  //Check for degenerate collinear case
+-  if(x0 === 0 && y0 === 0 && x1 === 0 && y1 === 0) {
+-    return checkCollinear(a0, a1, b0, b1)
++  function d3_eventSource() {
++    var e = d3.event, s;
++    while (s = e.sourceEvent) e = s;
++    return e;
+   }
+-
+-  return true
+-}
+-},{"robust-orientation":133}],56:[function(require,module,exports){
+-"use strict"; "use restrict";
+-
+-module.exports = UnionFind;
+-
+-function UnionFind(count) {
+-  this.roots = new Array(count);
+-  this.ranks = new Array(count);
+-  
+-  for(var i=0; i<count; ++i) {
+-    this.roots[i] = i;
+-    this.ranks[i] = 0;
++  function d3_eventDispatch(target) {
++    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
++    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
++    dispatch.of = function(thiz, argumentz) {
++      return function(e1) {
++        try {
++          var e0 = e1.sourceEvent = d3.event;
++          e1.target = target;
++          d3.event = e1;
++          dispatch[e1.type].apply(thiz, argumentz);
++        } finally {
++          d3.event = e0;
++        }
++      };
++    };
++    return dispatch;
+   }
+-}
+-
+-var proto = UnionFind.prototype
+-
+-Object.defineProperty(proto, "length", {
+-  "get": function() {
+-    return this.roots.length
++  d3.requote = function(s) {
++    return s.replace(d3_requote_re, "\\$&");
++  };
++  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
++  var d3_subclass = {}.__proto__ ? function(object, prototype) {
++    object.__proto__ = prototype;
++  } : function(object, prototype) {
++    for (var property in prototype) object[property] = prototype[property];
++  };
++  function d3_selection(groups) {
++    d3_subclass(groups, d3_selectionPrototype);
++    return groups;
+   }
+-})
+-
+-proto.makeSet = function() {
+-  var n = this.roots.length;
+-  this.roots.push(n);
+-  this.ranks.push(0);
+-  return n;
+-}
+-
+-proto.find = function(x) {
+-  var x0 = x
+-  var roots = this.roots;
+-  while(roots[x] !== x) {
+-    x = roots[x]
++  var d3_select = function(s, n) {
++    return n.querySelector(s);
++  }, d3_selectAll = function(s, n) {
++    return n.querySelectorAll(s);
++  }, d3_selectMatches = function(n, s) {
++    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
++    d3_selectMatches = function(n, s) {
++      return d3_selectMatcher.call(n, s);
++    };
++    return d3_selectMatches(n, s);
++  };
++  if (typeof Sizzle === "function") {
++    d3_select = function(s, n) {
++      return Sizzle(s, n)[0] || null;
++    };
++    d3_selectAll = Sizzle;
++    d3_selectMatches = Sizzle.matchesSelector;
+   }
+-  while(roots[x0] !== x) {
+-    var y = roots[x0]
+-    roots[x0] = x
+-    x0 = y
++  d3.selection = function() {
++    return d3.select(d3_document.documentElement);
++  };
++  var d3_selectionPrototype = d3.selection.prototype = [];
++  d3_selectionPrototype.select = function(selector) {
++    var subgroups = [], subgroup, subnode, group, node;
++    selector = d3_selection_selector(selector);
++    for (var j = -1, m = this.length; ++j < m; ) {
++      subgroups.push(subgroup = []);
++      subgroup.parentNode = (group = this[j]).parentNode;
++      for (var i = -1, n = group.length; ++i < n; ) {
++        if (node = group[i]) {
++          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
++          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
++        } else {
++          subgroup.push(null);
++        }
++      }
++    }
++    return d3_selection(subgroups);
++  };
++  function d3_selection_selector(selector) {
++    return typeof selector === "function" ? selector : function() {
++      return d3_select(selector, this);
++    };
+   }
+-  return x;
+-}
+-
+-proto.link = function(x, y) {
+-  var xr = this.find(x)
+-    , yr = this.find(y);
+-  if(xr === yr) {
+-    return;
++  d3_selectionPrototype.selectAll = function(selector) {
++    var subgroups = [], subgroup, node;
++    selector = d3_selection_selectorAll(selector);
++    for (var j = -1, m = this.length; ++j < m; ) {
++      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
++        if (node = group[i]) {
++          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
++          subgroup.parentNode = node;
++        }
++      }
++    }
++    return d3_selection(subgroups);
++  };
++  function d3_selection_selectorAll(selector) {
++    return typeof selector === "function" ? selector : function() {
++      return d3_selectAll(selector, this);
++    };
+   }
+-  var ranks = this.ranks
+-    , roots = this.roots
+-    , xd    = ranks[xr]
+-    , yd    = ranks[yr];
+-  if(xd < yd) {
+-    roots[xr] = yr;
+-  } else if(yd < xd) {
+-    roots[yr] = xr;
+-  } else {
+-    roots[yr] = xr;
+-    ++ranks[xr];
++  var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
++  var d3_nsPrefix = {
++    svg: "http://www.w3.org/2000/svg",
++    xhtml: d3_nsXhtml,
++    xlink: "http://www.w3.org/1999/xlink",
++    xml: "http://www.w3.org/XML/1998/namespace",
++    xmlns: "http://www.w3.org/2000/xmlns/"
++  };
++  d3.ns = {
++    prefix: d3_nsPrefix,
++    qualify: function(name) {
++      var i = name.indexOf(":"), prefix = name;
++      if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
++      return d3_nsPrefix.hasOwnProperty(prefix) ? {
++        space: d3_nsPrefix[prefix],
++        local: name
++      } : name;
++    }
++  };
++  d3_selectionPrototype.attr = function(name, value) {
++    if (arguments.length < 2) {
++      if (typeof name === "string") {
++        var node = this.node();
++        name = d3.ns.qualify(name);
++        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
++      }
++      for (value in name) this.each(d3_selection_attr(value, name[value]));
++      return this;
++    }
++    return this.each(d3_selection_attr(name, value));
++  };
++  function d3_selection_attr(name, value) {
++    name = d3.ns.qualify(name);
++    function attrNull() {
++      this.removeAttribute(name);
++    }
++    function attrNullNS() {
++      this.removeAttributeNS(name.space, name.local);
++    }
++    function attrConstant() {
++      this.setAttribute(name, value);
++    }
++    function attrConstantNS() {
++      this.setAttributeNS(name.space, name.local, value);
++    }
++    function attrFunction() {
++      var x = value.apply(this, arguments);
++      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
++    }
++    function attrFunctionNS() {
++      var x = value.apply(this, arguments);
++      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
++    }
++    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
+   }
+-}
+-},{}],57:[function(require,module,exports){
+-module.exports = compareCells
+-
+-var min = Math.min
+-
+-function compareInt(a, b) {
+-  return a - b
+-}
+-
+-function compareCells(a, b) {
+-  var n = a.length
+-    , t = a.length - b.length
+-  if(t) {
+-    return t
++  function d3_collapse(s) {
++    return s.trim().replace(/\s+/g, " ");
+   }
+-  switch(n) {
+-    case 0:
+-      return 0
+-    case 1:
+-      return a[0] - b[0]
+-    case 2:
+-      return (a[0]+a[1]-b[0]-b[1]) ||
+-             min(a[0],a[1]) - min(b[0],b[1])
+-    case 3:
+-      var l1 = a[0]+a[1]
+-        , m1 = b[0]+b[1]
+-      t = l1+a[2] - (m1+b[2])
+-      if(t) {
+-        return t
++  d3_selectionPrototype.classed = function(name, value) {
++    if (arguments.length < 2) {
++      if (typeof name === "string") {
++        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
++        if (value = node.classList) {
++          while (++i < n) if (!value.contains(name[i])) return false;
++        } else {
++          value = node.getAttribute("class");
++          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
++        }
++        return true;
+       }
+-      var l0 = min(a[0], a[1])
+-        , m0 = min(b[0], b[1])
+-      return min(l0, a[2]) - min(m0, b[2]) ||
+-             min(l0+a[2], l1) - min(m0+b[2], m1)
+-    case 4:
+-      var aw=a[0], ax=a[1], ay=a[2], az=a[3]
+-        , bw=b[0], bx=b[1], by=b[2], bz=b[3]
+-      return (aw+ax+ay+az)-(bw+bx+by+bz) ||
+-             min(aw,ax,ay,az)-min(bw,bx,by,bz,bw) ||
+-             min(aw+ax,aw+ay,aw+az,ax+ay,ax+az,ay+az) -
+-               min(bw+bx,bw+by,bw+bz,bx+by,bx+bz,by+bz) ||
+-             min(aw+ax+ay,aw+ax+az,aw+ay+az,ax+ay+az) -
+-               min(bw+bx+by,bw+bx+bz,bw+by+bz,bx+by+bz)
+-    default:
+-      var as = a.slice().sort(compareInt)
+-      var bs = b.slice().sort(compareInt)
+-      for(var i=0; i<n; ++i) {
+-        t = as[i] - bs[i]
+-        if(t) {
+-          return t
++      for (value in name) this.each(d3_selection_classed(value, name[value]));
++      return this;
++    }
++    return this.each(d3_selection_classed(name, value));
++  };
++  function d3_selection_classedRe(name) {
++    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
++  }
++  function d3_selection_classes(name) {
++    return (name + "").trim().split(/^|\s+/);
++  }
++  function d3_selection_classed(name, value) {
++    name = d3_selection_classes(name).map(d3_selection_classedName);
++    var n = name.length;
++    function classedConstant() {
++      var i = -1;
++      while (++i < n) name[i](this, value);
++    }
++    function classedFunction() {
++      var i = -1, x = value.apply(this, arguments);
++      while (++i < n) name[i](this, x);
++    }
++    return typeof value === "function" ? classedFunction : classedConstant;
++  }
++  function d3_selection_classedName(name) {
++    var re = d3_selection_classedRe(name);
++    return function(node, value) {
++      if (c = node.classList) return value ? c.add(name) : c.remove(name);
++      var c = node.getAttribute("class") || "";
++      if (value) {
++        re.lastIndex = 0;
++        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
++      } else {
++        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
++      }
++    };
++  }
++  d3_selectionPrototype.style = function(name, value, priority) {
++    var n = arguments.length;
++    if (n < 3) {
++      if (typeof name !== "string") {
++        if (n < 2) value = "";
++        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
++        return this;
++      }
++      if (n < 2) {
++        var node = this.node();
++        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
++      }
++      priority = "";
++    }
++    return this.each(d3_selection_style(name, value, priority));
++  };
++  function d3_selection_style(name, value, priority) {
++    function styleNull() {
++      this.style.removeProperty(name);
++    }
++    function styleConstant() {
++      this.style.setProperty(name, value, priority);
++    }
++    function styleFunction() {
++      var x = value.apply(this, arguments);
++      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
++    }
++    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
++  }
++  d3_selectionPrototype.property = function(name, value) {
++    if (arguments.length < 2) {
++      if (typeof name === "string") return this.node()[name];
++      for (value in name) this.each(d3_selection_property(value, name[value]));
++      return this;
++    }
++    return this.each(d3_selection_property(name, value));
++  };
++  function d3_selection_property(name, value) {
++    function propertyNull() {
++      delete this[name];
++    }
++    function propertyConstant() {
++      this[name] = value;
++    }
++    function propertyFunction() {
++      var x = value.apply(this, arguments);
++      if (x == null) delete this[name]; else this[name] = x;
++    }
++    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
++  }
++  d3_selectionPrototype.text = function(value) {
++    return arguments.length ? this.each(typeof value === "function" ? function() {
++      var v = value.apply(this, arguments);
++      this.textContent = v == null ? "" : v;
++    } : value == null ? function() {
++      this.textContent = "";
++    } : function() {
++      this.textContent = value;
++    }) : this.node().textContent;
++  };
++  d3_selectionPrototype.html = function(value) {
++    return arguments.length ? this.each(typeof value === "function" ? function() {
++      var v = value.apply(this, arguments);
++      this.innerHTML = v == null ? "" : v;
++    } : value == null ? function() {
++      this.innerHTML = "";
++    } : function() {
++      this.innerHTML = value;
++    }) : this.node().innerHTML;
++  };
++  d3_selectionPrototype.append = function(name) {
++    name = d3_selection_creator(name);
++    return this.select(function() {
++      return this.appendChild(name.apply(this, arguments));
++    });
++  };
++  function d3_selection_creator(name) {
++    function create() {
++      var document = this.ownerDocument, namespace = this.namespaceURI;
++      return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
++    }
++    function createNS() {
++      return this.ownerDocument.createElementNS(name.space, name.local);
++    }
++    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
++  }
++  d3_selectionPrototype.insert = function(name, before) {
++    name = d3_selection_creator(name);
++    before = d3_selection_selector(before);
++    return this.select(function() {
++      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
++    });
++  };
++  d3_selectionPrototype.remove = function() {
++    return this.each(d3_selectionRemove);
++  };
++  function d3_selectionRemove() {
++    var parent = this.parentNode;
++    if (parent) parent.removeChild(this);
++  }
++  d3_selectionPrototype.data = function(value, key) {
++    var i = -1, n = this.length, group, node;
++    if (!arguments.length) {
++      value = new Array(n = (group = this[0]).length);
++      while (++i < n) {
++        if (node = group[i]) {
++          value[i] = node.__data__;
+         }
+       }
+-      return 0
+-  }
+-}
+-
+-},{}],58:[function(require,module,exports){
+-"use strict"
+-
+-var createThunk = require("./lib/thunk.js")
+-
+-function Procedure() {
+-  this.argTypes = []
+-  this.shimArgs = []
+-  this.arrayArgs = []
+-  this.arrayBlockIndices = []
+-  this.scalarArgs = []
+-  this.offsetArgs = []
+-  this.offsetArgIndex = []
+-  this.indexArgs = []
+-  this.shapeArgs = []
+-  this.funcName = ""
+-  this.pre = null
+-  this.body = null
+-  this.post = null
+-  this.debug = false
+-}
+-
+-function compileCwise(user_args) {
+-  //Create procedure
+-  var proc = new Procedure()
+-  
+-  //Parse blocks
+-  proc.pre    = user_args.pre
+-  proc.body   = user_args.body
+-  proc.post   = user_args.post
+-
+-  //Parse arguments
+-  var proc_args = user_args.args.slice(0)
+-  proc.argTypes = proc_args
+-  for(var i=0; i<proc_args.length; ++i) {
+-    var arg_type = proc_args[i]
+-    if(arg_type === "array" || (typeof arg_type === "object" && arg_type.blockIndices)) {
+-      proc.argTypes[i] = "array"
+-      proc.arrayArgs.push(i)
+-      proc.arrayBlockIndices.push(arg_type.blockIndices ? arg_type.blockIndices : 0)
+-      proc.shimArgs.push("array" + i)
+-      if(i < proc.pre.args.length && proc.pre.args[i].count>0) {
+-        throw new Error("cwise: pre() block may not reference array args")
+-      }
+-      if(i < proc.post.args.length && proc.post.args[i].count>0) {
+-        throw new Error("cwise: post() block may not reference array args")
+-      }
+-    } else if(arg_type === "scalar") {
+-      proc.scalarArgs.push(i)
+-      proc.shimArgs.push("scalar" + i)
+-    } else if(arg_type === "index") {
+-      proc.indexArgs.push(i)
+-      if(i < proc.pre.args.length && proc.pre.args[i].count > 0) {
+-        throw new Error("cwise: pre() block may not reference array index")
+-      }
+-      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
+-        throw new Error("cwise: body() block may not write to array index")
+-      }
+-      if(i < proc.post.args.length && proc.post.args[i].count > 0) {
+-        throw new Error("cwise: post() block may not reference array index")
+-      }
+-    } else if(arg_type === "shape") {
+-      proc.shapeArgs.push(i)
+-      if(i < proc.pre.args.length && proc.pre.args[i].lvalue) {
+-        throw new Error("cwise: pre() block may not write to array shape")
+-      }
+-      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
+-        throw new Error("cwise: body() block may not write to array shape")
+-      }
+-      if(i < proc.post.args.length && proc.post.args[i].lvalue) {
+-        throw new Error("cwise: post() block may not write to array shape")
+-      }
+-    } else if(typeof arg_type === "object" && arg_type.offset) {
+-      proc.argTypes[i] = "offset"
+-      proc.offsetArgs.push({ array: arg_type.array, offset:arg_type.offset })
+-      proc.offsetArgIndex.push(i)
+-    } else {
+-      throw new Error("cwise: Unknown argument type " + proc_args[i])
+-    }
+-  }
+-  
+-  //Make sure at least one array argument was specified
+-  if(proc.arrayArgs.length <= 0) {
+-    throw new Error("cwise: No array arguments specified")
+-  }
+-  
+-  //Make sure arguments are correct
+-  if(proc.pre.args.length > proc_args.length) {
+-    throw new Error("cwise: Too many arguments in pre() block")
+-  }
+-  if(proc.body.args.length > proc_args.length) {
+-    throw new Error("cwise: Too many arguments in body() block")
+-  }
+-  if(proc.post.args.length > proc_args.length) {
+-    throw new Error("cwise: Too many arguments in post() block")
+-  }
+-
+-  //Check debug flag
+-  proc.debug = !!user_args.printCode || !!user_args.debug
+-  
+-  //Retrieve name
+-  proc.funcName = user_args.funcName || "cwise"
+-  
+-  //Read in block size
+-  proc.blockSize = user_args.blockSize || 64
+-
+-  return createThunk(proc)
+-}
+-
+-module.exports = compileCwise
+-
+-},{"./lib/thunk.js":60}],59:[function(require,module,exports){
+-"use strict"
+-
+-var uniq = require("uniq")
+-
+-// This function generates very simple loops analogous to how you typically traverse arrays (the outermost loop corresponds to the slowest changing index, the innermost loop to the fastest changing index)
+-// TODO: If two arrays have the same strides (and offsets) there is potential for decreasing the number of "pointers" and related variables. The drawback is that the type signature would become more specific and that there would thus be less potential for caching, but it might still be worth it, especially when dealing with large numbers of arguments.
+-function innerFill(order, proc, body) {
+-  var dimension = order.length
+-    , nargs = proc.arrayArgs.length
+-    , has_index = proc.indexArgs.length>0
+-    , code = []
+-    , vars = []
+-    , idx=0, pidx=0, i, j
+-  for(i=0; i<dimension; ++i) { // Iteration variables
+-    vars.push(["i",i,"=0"].join(""))
+-  }
+-  //Compute scan deltas
+-  for(j=0; j<nargs; ++j) {
+-    for(i=0; i<dimension; ++i) {
+-      pidx = idx
+-      idx = order[i]
+-      if(i === 0) { // The innermost/fastest dimension's delta is simply its stride
+-        vars.push(["d",j,"s",i,"=t",j,"p",idx].join(""))
+-      } else { // For other dimensions the delta is basically the stride minus something which essentially "rewinds" the previous (more inner) dimension
+-        vars.push(["d",j,"s",i,"=(t",j,"p",idx,"-s",pidx,"*t",j,"p",pidx,")"].join(""))
+-      }
+-    }
+-  }
+-  code.push("var " + vars.join(","))
+-  //Scan loop
+-  for(i=dimension-1; i>=0; --i) { // Start at largest stride and work your way inwards
+-    idx = order[i]
+-    code.push(["for(i",i,"=0;i",i,"<s",idx,";++i",i,"){"].join(""))
+-  }
+-  //Push body of inner loop
+-  code.push(body)
+-  //Advance scan pointers
+-  for(i=0; i<dimension; ++i) {
+-    pidx = idx
+-    idx = order[i]
+-    for(j=0; j<nargs; ++j) {
+-      code.push(["p",j,"+=d",j,"s",i].join(""))
+-    }
+-    if(has_index) {
+-      if(i > 0) {
+-        code.push(["index[",pidx,"]-=s",pidx].join(""))
+-      }
+-      code.push(["++index[",idx,"]"].join(""))
+-    }
+-    code.push("}")
+-  }
+-  return code.join("\n")
+-}
+-
+-// Generate "outer" loops that loop over blocks of data, applying "inner" loops to the blocks by manipulating the local variables in such a way that the inner loop only "sees" the current block.
+-// TODO: If this is used, then the previous declaration (done by generateCwiseOp) of s* is essentially unnecessary.
+-//       I believe the s* are not used elsewhere (in particular, I don't think they're used in the pre/post parts and "shape" is defined independently), so it would be possible to make defining the s* dependent on what loop method is being used.
+-function outerFill(matched, order, proc, body) {
+-  var dimension = order.length
+-    , nargs = proc.arrayArgs.length
+-    , blockSize = proc.blockSize
+-    , has_index = proc.indexArgs.length > 0
+-    , code = []
+-  for(var i=0; i<nargs; ++i) {
+-    code.push(["var offset",i,"=p",i].join(""))
+-  }
+-  //Generate loops for unmatched dimensions
+-  // The order in which these dimensions are traversed is fairly arbitrary (from small stride to large stride, for the first argument)
+-  // TODO: It would be nice if the order in which these loops are placed would also be somehow "optimal" (at the very least we should check that it really doesn't hurt us if they're not).
+-  for(var i=matched; i<dimension; ++i) {
+-    code.push(["for(var j"+i+"=SS[", order[i], "]|0;j", i, ">0;){"].join("")) // Iterate back to front
+-    code.push(["if(j",i,"<",blockSize,"){"].join("")) // Either decrease j by blockSize (s = blockSize), or set it to zero (after setting s = j).
+-    code.push(["s",order[i],"=j",i].join(""))
+-    code.push(["j",i,"=0"].join(""))
+-    code.push(["}else{s",order[i],"=",blockSize].join(""))
+-    code.push(["j",i,"-=",blockSize,"}"].join(""))
+-    if(has_index) {
+-      code.push(["index[",order[i],"]=j",i].join(""))
+-    }
+-  }
+-  for(var i=0; i<nargs; ++i) {
+-    var indexStr = ["offset"+i]
+-    for(var j=matched; j<dimension; ++j) {
+-      indexStr.push(["j",j,"*t",i,"p",order[j]].join(""))
+-    }
+-    code.push(["p",i,"=(",indexStr.join("+"),")"].join(""))
+-  }
+-  code.push(innerFill(order, proc, body))
+-  for(var i=matched; i<dimension; ++i) {
+-    code.push("}")
+-  }
+-  return code.join("\n")
+-}
+-
+-//Count the number of compatible inner orders
+-// This is the length of the longest common prefix of the arrays in orders.
+-// Each array in orders lists the dimensions of the correspond ndarray in order of increasing stride.
+-// This is thus the maximum number of dimensions that can be efficiently traversed by simple nested loops for all arrays.
+-function countMatches(orders) {
+-  var matched = 0, dimension = orders[0].length
+-  while(matched < dimension) {
+-    for(var j=1; j<orders.length; ++j) {
+-      if(orders[j][matched] !== orders[0][matched]) {
+-        return matched
+-      }
+-    }
+-    ++matched
+-  }
+-  return matched
+-}
+-
+-//Processes a block according to the given data types
+-// Replaces variable names by different ones, either "local" ones (that are then ferried in and out of the given array) or ones matching the arguments that the function performing the ultimate loop will accept.
+-function processBlock(block, proc, dtypes) {
+-  var code = block.body
+-  var pre = []
+-  var post = []
+-  for(var i=0; i<block.args.length; ++i) {
+-    var carg = block.args[i]
+-    if(carg.count <= 0) {
+-      continue
+-    }
+-    var re = new RegExp(carg.name, "g")
+-    var ptrStr = ""
+-    var arrNum = proc.arrayArgs.indexOf(i)
+-    switch(proc.argTypes[i]) {
+-      case "offset":
+-        var offArgIndex = proc.offsetArgIndex.indexOf(i)
+-        var offArg = proc.offsetArgs[offArgIndex]
+-        arrNum = offArg.array
+-        ptrStr = "+q" + offArgIndex // Adds offset to the "pointer" in the array
+-      case "array":
+-        ptrStr = "p" + arrNum + ptrStr
+-        var localStr = "l" + i
+-        var arrStr = "a" + arrNum
+-        if (proc.arrayBlockIndices[arrNum] === 0) { // Argument to body is just a single value from this array
+-          if(carg.count === 1) { // Argument/array used only once(?)
+-            if(dtypes[arrNum] === "generic") {
+-              if(carg.lvalue) {
+-                pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
+-                code = code.replace(re, localStr)
+-                post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
+-              } else {
+-                code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
+-              }
+-            } else {
+-              code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
+-            }
+-          } else if(dtypes[arrNum] === "generic") {
+-            pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
+-            code = code.replace(re, localStr)
+-            if(carg.lvalue) {
+-              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
+-            }
+-          } else {
+-            pre.push(["var ", localStr, "=", arrStr, "[", ptrStr, "]"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
+-            code = code.replace(re, localStr)
+-            if(carg.lvalue) {
+-              post.push([arrStr, "[", ptrStr, "]=", localStr].join(""))
+-            }
+-          }
+-        } else { // Argument to body is a "block"
+-          var reStrArr = [carg.name], ptrStrArr = [ptrStr]
+-          for(var j=0; j<Math.abs(proc.arrayBlockIndices[arrNum]); j++) {
+-            reStrArr.push("\\s*\\[([^\\]]+)\\]")
+-            ptrStrArr.push("$" + (j+1) + "*t" + arrNum + "b" + j) // Matched index times stride
+-          }
+-          re = new RegExp(reStrArr.join(""), "g")
+-          ptrStr = ptrStrArr.join("+")
+-          if(dtypes[arrNum] === "generic") {
+-            /*if(carg.lvalue) {
+-              pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
+-              code = code.replace(re, localStr)
+-              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
+-            } else {
+-              code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
+-            }*/
+-            throw new Error("cwise: Generic arrays not supported in combination with blocks!")
+-          } else {
+-            // This does not produce any local variables, even if variables are used multiple times. It would be possible to do so, but it would complicate things quite a bit.
+-            code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
+-          }
+-        }
+-      break
+-      case "scalar":
+-        code = code.replace(re, "Y" + proc.scalarArgs.indexOf(i))
+-      break
+-      case "index":
+-        code = code.replace(re, "index")
+-      break
+-      case "shape":
+-        code = code.replace(re, "shape")
+-      break
+-    }
+-  }
+-  return [pre.join("\n"), code, post.join("\n")].join("\n").trim()
+-}
+-
+-function typeSummary(dtypes) {
+-  var summary = new Array(dtypes.length)
+-  var allEqual = true
+-  for(var i=0; i<dtypes.length; ++i) {
+-    var t = dtypes[i]
+-    var digits = t.match(/\d+/)
+-    if(!digits) {
+-      digits = ""
+-    } else {
+-      digits = digits[0]
+-    }
+-    if(t.charAt(0) === 0) {
+-      summary[i] = "u" + t.charAt(1) + digits
+-    } else {
+-      summary[i] = t.charAt(0) + digits
+-    }
+-    if(i > 0) {
+-      allEqual = allEqual && summary[i] === summary[i-1]
+-    }
+-  }
+-  if(allEqual) {
+-    return summary[0]
+-  }
+-  return summary.join("")
+-}
+-
+-//Generates a cwise operator
+-function generateCWiseOp(proc, typesig) {
+-
+-  //Compute dimension
+-  // Arrays get put first in typesig, and there are two entries per array (dtype and order), so this gets the number of dimensions in the first array arg.
+-  var dimension = (typesig[1].length - Math.abs(proc.arrayBlockIndices[0]))|0
+-  var orders = new Array(proc.arrayArgs.length)
+-  var dtypes = new Array(proc.arrayArgs.length)
+-  for(var i=0; i<proc.arrayArgs.length; ++i) {
+-    dtypes[i] = typesig[2*i]
+-    orders[i] = typesig[2*i+1]
+-  }
+-  
+-  //Determine where block and loop indices start and end
+-  var blockBegin = [], blockEnd = [] // These indices are exposed as blocks
+-  var loopBegin = [], loopEnd = [] // These indices are iterated over
+-  var loopOrders = [] // orders restricted to the loop indices
+-  for(var i=0; i<proc.arrayArgs.length; ++i) {
+-    if (proc.arrayBlockIndices[i]<0) {
+-      loopBegin.push(0)
+-      loopEnd.push(dimension)
+-      blockBegin.push(dimension)
+-      blockEnd.push(dimension+proc.arrayBlockIndices[i])
+-    } else {
+-      loopBegin.push(proc.arrayBlockIndices[i]) // Non-negative
+-      loopEnd.push(proc.arrayBlockIndices[i]+dimension)
+-      blockBegin.push(0)
+-      blockEnd.push(proc.arrayBlockIndices[i])
+-    }
+-    var newOrder = []
+-    for(var j=0; j<orders[i].length; j++) {
+-      if (loopBegin[i]<=orders[i][j] && orders[i][j]<loopEnd[i]) {
+-        newOrder.push(orders[i][j]-loopBegin[i]) // If this is a loop index, put it in newOrder, subtracting loopBegin, to make sure that all loopOrders are using a common set of indices.
+-      }
+-    }
+-    loopOrders.push(newOrder)
+-  }
+-
+-  //First create arguments for procedure
+-  var arglist = ["SS"] // SS is the overall shape over which we iterate
+-  var code = ["'use strict'"]
+-  var vars = []
+-  
+-  for(var j=0; j<dimension; ++j) {
+-    vars.push(["s", j, "=SS[", j, "]"].join("")) // The limits for each dimension.
+-  }
+-  for(var i=0; i<proc.arrayArgs.length; ++i) {
+-    arglist.push("a"+i) // Actual data array
+-    arglist.push("t"+i) // Strides
+-    arglist.push("p"+i) // Offset in the array at which the data starts (also used for iterating over the data)
+-    
+-    for(var j=0; j<dimension; ++j) { // Unpack the strides into vars for looping
+-      vars.push(["t",i,"p",j,"=t",i,"[",loopBegin[i]+j,"]"].join(""))
+-    }
+-    
+-    for(var j=0; j<Math.abs(proc.arrayBlockIndices[i]); ++j) { // Unpack the strides into vars for block iteration
+-      vars.push(["t",i,"b",j,"=t",i,"[",blockBegin[i]+j,"]"].join(""))
+-    }
+-  }
+-  for(var i=0; i<proc.scalarArgs.length; ++i) {
+-    arglist.push("Y" + i)
+-  }
+-  if(proc.shapeArgs.length > 0) {
+-    vars.push("shape=SS.slice(0)") // Makes the shape over which we iterate available to the user defined functions (so you can use width/height for example)
+-  }
+-  if(proc.indexArgs.length > 0) {
+-    // Prepare an array to keep track of the (logical) indices, initialized to dimension zeroes.
+-    var zeros = new Array(dimension)
+-    for(var i=0; i<dimension; ++i) {
+-      zeros[i] = "0"
+-    }
+-    vars.push(["index=[", zeros.join(","), "]"].join(""))
+-  }
+-  for(var i=0; i<proc.offsetArgs.length; ++i) { // Offset arguments used for stencil operations
+-    var off_arg = proc.offsetArgs[i]
+-    var init_string = []
+-    for(var j=0; j<off_arg.offset.length; ++j) {
+-      if(off_arg.offset[j] === 0) {
+-        continue
+-      } else if(off_arg.offset[j] === 1) {
+-        init_string.push(["t", off_arg.array, "p", j].join(""))      
+-      } else {
+-        init_string.push([off_arg.offset[j], "*t", off_arg.array, "p", j].join(""))
+-      }
+-    }
+-    if(init_string.length === 0) {
+-      vars.push("q" + i + "=0")
+-    } else {
+-      vars.push(["q", i, "=", init_string.join("+")].join(""))
+-    }
+-  }
+-
+-  //Prepare this variables
+-  var thisVars = uniq([].concat(proc.pre.thisVars)
+-                      .concat(proc.body.thisVars)
+-                      .concat(proc.post.thisVars))
+-  vars = vars.concat(thisVars)
+-  code.push("var " + vars.join(","))
+-  for(var i=0; i<proc.arrayArgs.length; ++i) {
+-    code.push("p"+i+"|=0")
+-  }
+-  
+-  //Inline prelude
+-  if(proc.pre.body.length > 3) {
+-    code.push(processBlock(proc.pre, proc, dtypes))
+-  }
+-
+-  //Process body
+-  var body = processBlock(proc.body, proc, dtypes)
+-  var matched = countMatches(loopOrders)
+-  if(matched < dimension) {
+-    code.push(outerFill(matched, loopOrders[0], proc, body)) // TODO: Rather than passing loopOrders[0], it might be interesting to look at passing an order that represents the majority of the arguments for example.
+-  } else {
+-    code.push(innerFill(loopOrders[0], proc, body))
+-  }
+-
+-  //Inline epilog
+-  if(proc.post.body.length > 3) {
+-    code.push(processBlock(proc.post, proc, dtypes))
+-  }
+-  
+-  if(proc.debug) {
+-    console.log("-----Generated cwise routine for ", typesig, ":\n" + code.join("\n") + "\n----------")
+-  }
+-  
+-  var loopName = [(proc.funcName||"unnamed"), "_cwise_loop_", orders[0].join("s"),"m",matched,typeSummary(dtypes)].join("")
+-  var f = new Function(["function ",loopName,"(", arglist.join(","),"){", code.join("\n"),"} return ", loopName].join(""))
+-  return f()
+-}
+-module.exports = generateCWiseOp
+-
+-},{"uniq":152}],60:[function(require,module,exports){
+-"use strict"
+-
+-// The function below is called when constructing a cwise function object, and does the following:
+-// A function object is constructed which accepts as argument a compilation function and returns another function.
+-// It is this other function that is eventually returned by createThunk, and this function is the one that actually
+-// checks whether a certain pattern of arguments has already been used before and compiles new loops as needed.
+-// The compilation passed to the first function object is used for compiling new functions.
+-// Once this function object is created, it is called with compile as argument, where the first argument of compile
+-// is bound to "proc" (essentially containing a preprocessed version of the user arguments to cwise).
+-// So createThunk roughly works like this:
+-// function createThunk(proc) {
+-//   var thunk = function(compileBound) {
+-//     var CACHED = {}
+-//     return function(arrays and scalars) {
+-//       if (dtype and order of arrays in CACHED) {
+-//         var func = CACHED[dtype and order of arrays]
+-//       } else {
+-//         var func = CACHED[dtype and order of arrays] = compileBound(dtype and order of arrays)
+-//       }
+-//       return func(arrays and scalars)
+-//     }
+-//   }
+-//   return thunk(compile.bind1(proc))
+-// }
+-
+-var compile = require("./compile.js")
+-
+-function createThunk(proc) {
+-  var code = ["'use strict'", "var CACHED={}"]
+-  var vars = []
+-  var thunkName = proc.funcName + "_cwise_thunk"
+-  
+-  //Build thunk
+-  code.push(["return function ", thunkName, "(", proc.shimArgs.join(","), "){"].join(""))
+-  var typesig = []
+-  var string_typesig = []
+-  var proc_args = [["array",proc.arrayArgs[0],".shape.slice(", // Slice shape so that we only retain the shape over which we iterate (which gets passed to the cwise operator as SS).
+-                    Math.max(0,proc.arrayBlockIndices[0]),proc.arrayBlockIndices[0]<0?(","+proc.arrayBlockIndices[0]+")"):")"].join("")]
+-  var shapeLengthConditions = [], shapeConditions = []
+-  // Process array arguments
+-  for(var i=0; i<proc.arrayArgs.length; ++i) {
+-    var j = proc.arrayArgs[i]
+-    vars.push(["t", j, "=array", j, ".dtype,",
+-               "r", j, "=array", j, ".order"].join(""))
+-    typesig.push("t" + j)
+-    typesig.push("r" + j)
+-    string_typesig.push("t"+j)
+-    string_typesig.push("r"+j+".join()")
+-    proc_args.push("array" + j + ".data")
+-    proc_args.push("array" + j + ".stride")
+-    proc_args.push("array" + j + ".offset|0")
+-    if (i>0) { // Gather conditions to check for shape equality (ignoring block indices)
+-      shapeLengthConditions.push("array" + proc.arrayArgs[0] + ".shape.length===array" + j + ".shape.length+" + (Math.abs(proc.arrayBlockIndices[0])-Math.abs(proc.arrayBlockIndices[i])))
+-      shapeConditions.push("array" + proc.arrayArgs[0] + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[0]) + "]===array" + j + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[i]) + "]")
+-    }
+-  }
+-  // Check for shape equality
+-  if (proc.arrayArgs.length > 1) {
+-    code.push("if (!(" + shapeLengthConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same dimensionality!')")
+-    code.push("for(var shapeIndex=array" + proc.arrayArgs[0] + ".shape.length-" + Math.abs(proc.arrayBlockIndices[0]) + "; shapeIndex-->0;) {")
+-    code.push("if (!(" + shapeConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same shape!')")
+-    code.push("}")
+-  }
+-  // Process scalar arguments
+-  for(var i=0; i<proc.scalarArgs.length; ++i) {
+-    proc_args.push("scalar" + proc.scalarArgs[i])
+-  }
+-  // Check for cached function (and if not present, generate it)
+-  vars.push(["type=[", string_typesig.join(","), "].join()"].join(""))
+-  vars.push("proc=CACHED[type]")
+-  code.push("var " + vars.join(","))
+-  
+-  code.push(["if(!proc){",
+-             "CACHED[type]=proc=compile([", typesig.join(","), "])}",
+-             "return proc(", proc_args.join(","), ")}"].join(""))
+-
+-  if(proc.debug) {
+-    console.log("-----Generated thunk:\n" + code.join("\n") + "\n----------")
+-  }
+-  
+-  //Compile thunk
+-  var thunk = new Function("compile", code.join("\n"))
+-  return thunk(compile.bind(undefined, proc))
+-}
+-
+-module.exports = createThunk
+-
+-},{"./compile.js":59}],61:[function(require,module,exports){
+-module.exports = require("cwise-compiler")
+-},{"cwise-compiler":58}],62:[function(require,module,exports){
+-!function() {
+-  var d3 = {
+-    version: "3.5.16"
+-  };
+-  var d3_arraySlice = [].slice, d3_array = function(list) {
+-    return d3_arraySlice.call(list);
+-  };
+-  var d3_document = this.document;
+-  function d3_documentElement(node) {
+-    return node && (node.ownerDocument || node.document || node).documentElement;
+-  }
+-  function d3_window(node) {
+-    return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
+-  }
+-  if (d3_document) {
+-    try {
+-      d3_array(d3_document.documentElement.childNodes)[0].nodeType;
+-    } catch (e) {
+-      d3_array = function(list) {
+-        var i = list.length, array = new Array(i);
+-        while (i--) array[i] = list[i];
+-        return array;
+-      };
+-    }
+-  }
+-  if (!Date.now) Date.now = function() {
+-    return +new Date();
+-  };
+-  if (d3_document) {
+-    try {
+-      d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
+-    } catch (error) {
+-      var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
+-      d3_element_prototype.setAttribute = function(name, value) {
+-        d3_element_setAttribute.call(this, name, value + "");
+-      };
+-      d3_element_prototype.setAttributeNS = function(space, local, value) {
+-        d3_element_setAttributeNS.call(this, space, local, value + "");
+-      };
+-      d3_style_prototype.setProperty = function(name, value, priority) {
+-        d3_style_setProperty.call(this, name, value + "", priority);
+-      };
+-    }
+-  }
+-  d3.ascending = d3_ascending;
+-  function d3_ascending(a, b) {
+-    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
+-  }
+-  d3.descending = function(a, b) {
+-    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
+-  };
+-  d3.min = function(array, f) {
+-    var i = -1, n = array.length, a, b;
+-    if (arguments.length === 1) {
+-      while (++i < n) if ((b = array[i]) != null && b >= b) {
+-        a = b;
+-        break;
+-      }
+-      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
+-    } else {
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
+-        a = b;
+-        break;
+-      }
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
+-    }
+-    return a;
+-  };
+-  d3.max = function(array, f) {
+-    var i = -1, n = array.length, a, b;
+-    if (arguments.length === 1) {
+-      while (++i < n) if ((b = array[i]) != null && b >= b) {
+-        a = b;
+-        break;
+-      }
+-      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
+-    } else {
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
+-        a = b;
+-        break;
+-      }
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
+-    }
+-    return a;
+-  };
+-  d3.extent = function(array, f) {
+-    var i = -1, n = array.length, a, b, c;
+-    if (arguments.length === 1) {
+-      while (++i < n) if ((b = array[i]) != null && b >= b) {
+-        a = c = b;
+-        break;
+-      }
+-      while (++i < n) if ((b = array[i]) != null) {
+-        if (a > b) a = b;
+-        if (c < b) c = b;
+-      }
+-    } else {
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
+-        a = c = b;
+-        break;
+-      }
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
+-        if (a > b) a = b;
+-        if (c < b) c = b;
+-      }
+-    }
+-    return [ a, c ];
+-  };
+-  function d3_number(x) {
+-    return x === null ? NaN : +x;
+-  }
+-  function d3_numeric(x) {
+-    return !isNaN(x);
+-  }
+-  d3.sum = function(array, f) {
+-    var s = 0, n = array.length, a, i = -1;
+-    if (arguments.length === 1) {
+-      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
+-    } else {
+-      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
+-    }
+-    return s;
+-  };
+-  d3.mean = function(array, f) {
+-    var s = 0, n = array.length, a, i = -1, j = n;
+-    if (arguments.length === 1) {
+-      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
+-    } else {
+-      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
+-    }
+-    if (j) return s / j;
+-  };
+-  d3.quantile = function(values, p) {
+-    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
+-    return e ? v + e * (values[h] - v) : v;
+-  };
+-  d3.median = function(array, f) {
+-    var numbers = [], n = array.length, a, i = -1;
+-    if (arguments.length === 1) {
+-      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
+-    } else {
+-      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
+-    }
+-    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
+-  };
+-  d3.variance = function(array, f) {
+-    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
+-    if (arguments.length === 1) {
+-      while (++i < n) {
+-        if (d3_numeric(a = d3_number(array[i]))) {
+-          d = a - m;
+-          m += d / ++j;
+-          s += d * (a - m);
+-        }
+-      }
+-    } else {
+-      while (++i < n) {
+-        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
+-          d = a - m;
+-          m += d / ++j;
+-          s += d * (a - m);
+-        }
+-      }
+-    }
+-    if (j > 1) return s / (j - 1);
+-  };
+-  d3.deviation = function() {
+-    var v = d3.variance.apply(this, arguments);
+-    return v ? Math.sqrt(v) : v;
+-  };
+-  function d3_bisector(compare) {
+-    return {
+-      left: function(a, x, lo, hi) {
+-        if (arguments.length < 3) lo = 0;
+-        if (arguments.length < 4) hi = a.length;
+-        while (lo < hi) {
+-          var mid = lo + hi >>> 1;
+-          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
+-        }
+-        return lo;
+-      },
+-      right: function(a, x, lo, hi) {
+-        if (arguments.length < 3) lo = 0;
+-        if (arguments.length < 4) hi = a.length;
+-        while (lo < hi) {
+-          var mid = lo + hi >>> 1;
+-          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
+-        }
+-        return lo;
+-      }
+-    };
+-  }
+-  var d3_bisect = d3_bisector(d3_ascending);
+-  d3.bisectLeft = d3_bisect.left;
+-  d3.bisect = d3.bisectRight = d3_bisect.right;
+-  d3.bisector = function(f) {
+-    return d3_bisector(f.length === 1 ? function(d, x) {
+-      return d3_ascending(f(d), x);
+-    } : f);
+-  };
+-  d3.shuffle = function(array, i0, i1) {
+-    if ((m = arguments.length) < 3) {
+-      i1 = array.length;
+-      if (m < 2) i0 = 0;
+-    }
+-    var m = i1 - i0, t, i;
+-    while (m) {
+-      i = Math.random() * m-- | 0;
+-      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
+-    }
+-    return array;
+-  };
+-  d3.permute = function(array, indexes) {
+-    var i = indexes.length, permutes = new Array(i);
+-    while (i--) permutes[i] = array[indexes[i]];
+-    return permutes;
+-  };
+-  d3.pairs = function(array) {
+-    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
+-    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
+-    return pairs;
+-  };
+-  d3.transpose = function(matrix) {
+-    if (!(n = matrix.length)) return [];
+-    for (var i = -1, m = d3.min(matrix, d3_transposeLength), transpose = new Array(m); ++i < m; ) {
+-      for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n; ) {
+-        row[j] = matrix[j][i];
+-      }
+-    }
+-    return transpose;
+-  };
+-  function d3_transposeLength(d) {
+-    return d.length;
+-  }
+-  d3.zip = function() {
+-    return d3.transpose(arguments);
+-  };
+-  d3.keys = function(map) {
+-    var keys = [];
+-    for (var key in map) keys.push(key);
+-    return keys;
+-  };
+-  d3.values = function(map) {
+-    var values = [];
+-    for (var key in map) values.push(map[key]);
+-    return values;
+-  };
+-  d3.entries = function(map) {
+-    var entries = [];
+-    for (var key in map) entries.push({
+-      key: key,
+-      value: map[key]
+-    });
+-    return entries;
+-  };
+-  d3.merge = function(arrays) {
+-    var n = arrays.length, m, i = -1, j = 0, merged, array;
+-    while (++i < n) j += arrays[i].length;
+-    merged = new Array(j);
+-    while (--n >= 0) {
+-      array = arrays[n];
+-      m = array.length;
+-      while (--m >= 0) {
+-        merged[--j] = array[m];
+-      }
+-    }
+-    return merged;
+-  };
+-  var abs = Math.abs;
+-  d3.range = function(start, stop, step) {
+-    if (arguments.length < 3) {
+-      step = 1;
+-      if (arguments.length < 2) {
+-        stop = start;
+-        start = 0;
+-      }
+-    }
+-    if ((stop - start) / step === Infinity) throw new Error("infinite range");
+-    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
+-    start *= k, stop *= k, step *= k;
+-    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
+-    return range;
+-  };
+-  function d3_range_integerScale(x) {
+-    var k = 1;
+-    while (x * k % 1) k *= 10;
+-    return k;
+-  }
+-  function d3_class(ctor, properties) {
+-    for (var key in properties) {
+-      Object.defineProperty(ctor.prototype, key, {
+-        value: properties[key],
+-        enumerable: false
+-      });
+-    }
+-  }
+-  d3.map = function(object, f) {
+-    var map = new d3_Map();
+-    if (object instanceof d3_Map) {
+-      object.forEach(function(key, value) {
+-        map.set(key, value);
+-      });
+-    } else if (Array.isArray(object)) {
+-      var i = -1, n = object.length, o;
+-      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
+-    } else {
+-      for (var key in object) map.set(key, object[key]);
+-    }
+-    return map;
+-  };
+-  function d3_Map() {
+-    this._ = Object.create(null);
+-  }
+-  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
+-  d3_class(d3_Map, {
+-    has: d3_map_has,
+-    get: function(key) {
+-      return this._[d3_map_escape(key)];
+-    },
+-    set: function(key, value) {
+-      return this._[d3_map_escape(key)] = value;
+-    },
+-    remove: d3_map_remove,
+-    keys: d3_map_keys,
+-    values: function() {
+-      var values = [];
+-      for (var key in this._) values.push(this._[key]);
+-      return values;
+-    },
+-    entries: function() {
+-      var entries = [];
+-      for (var key in this._) entries.push({
+-        key: d3_map_unescape(key),
+-        value: this._[key]
+-      });
+-      return entries;
+-    },
+-    size: d3_map_size,
+-    empty: d3_map_empty,
+-    forEach: function(f) {
+-      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
+-    }
+-  });
+-  function d3_map_escape(key) {
+-    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
+-  }
+-  function d3_map_unescape(key) {
+-    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
+-  }
+-  function d3_map_has(key) {
+-    return d3_map_escape(key) in this._;
+-  }
+-  function d3_map_remove(key) {
+-    return (key = d3_map_escape(key)) in this._ && delete this._[key];
+-  }
+-  function d3_map_keys() {
+-    var keys = [];
+-    for (var key in this._) keys.push(d3_map_unescape(key));
+-    return keys;
+-  }
+-  function d3_map_size() {
+-    var size = 0;
+-    for (var key in this._) ++size;
+-    return size;
+-  }
+-  function d3_map_empty() {
+-    for (var key in this._) return false;
+-    return true;
+-  }
+-  d3.nest = function() {
+-    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
+-    function map(mapType, array, depth) {
+-      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
+-      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
+-      while (++i < n) {
+-        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
+-          values.push(object);
+-        } else {
+-          valuesByKey.set(keyValue, [ object ]);
+-        }
+-      }
+-      if (mapType) {
+-        object = mapType();
+-        setter = function(keyValue, values) {
+-          object.set(keyValue, map(mapType, values, depth));
+-        };
+-      } else {
+-        object = {};
+-        setter = function(keyValue, values) {
+-          object[keyValue] = map(mapType, values, depth);
+-        };
+-      }
+-      valuesByKey.forEach(setter);
+-      return object;
+-    }
+-    function entries(map, depth) {
+-      if (depth >= keys.length) return map;
+-      var array = [], sortKey = sortKeys[depth++];
+-      map.forEach(function(key, keyMap) {
+-        array.push({
+-          key: key,
+-          values: entries(keyMap, depth)
+-        });
+-      });
+-      return sortKey ? array.sort(function(a, b) {
+-        return sortKey(a.key, b.key);
+-      }) : array;
+-    }
+-    nest.map = function(array, mapType) {
+-      return map(mapType, array, 0);
+-    };
+-    nest.entries = function(array) {
+-      return entries(map(d3.map, array, 0), 0);
+-    };
+-    nest.key = function(d) {
+-      keys.push(d);
+-      return nest;
+-    };
+-    nest.sortKeys = function(order) {
+-      sortKeys[keys.length - 1] = order;
+-      return nest;
+-    };
+-    nest.sortValues = function(order) {
+-      sortValues = order;
+-      return nest;
+-    };
+-    nest.rollup = function(f) {
+-      rollup = f;
+-      return nest;
+-    };
+-    return nest;
+-  };
+-  d3.set = function(array) {
+-    var set = new d3_Set();
+-    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
+-    return set;
+-  };
+-  function d3_Set() {
+-    this._ = Object.create(null);
+-  }
+-  d3_class(d3_Set, {
+-    has: d3_map_has,
+-    add: function(key) {
+-      this._[d3_map_escape(key += "")] = true;
+-      return key;
+-    },
+-    remove: d3_map_remove,
+-    values: d3_map_keys,
+-    size: d3_map_size,
+-    empty: d3_map_empty,
+-    forEach: function(f) {
+-      for (var key in this._) f.call(this, d3_map_unescape(key));
+-    }
+-  });
+-  d3.behavior = {};
+-  function d3_identity(d) {
+-    return d;
+-  }
+-  d3.rebind = function(target, source) {
+-    var i = 1, n = arguments.length, method;
+-    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
+-    return target;
+-  };
+-  function d3_rebind(target, source, method) {
+-    return function() {
+-      var value = method.apply(source, arguments);
+-      return value === source ? target : value;
+-    };
+-  }
+-  function d3_vendorSymbol(object, name) {
+-    if (name in object) return name;
+-    name = name.charAt(0).toUpperCase() + name.slice(1);
+-    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
+-      var prefixName = d3_vendorPrefixes[i] + name;
+-      if (prefixName in object) return prefixName;
+-    }
+-  }
+-  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
+-  function d3_noop() {}
+-  d3.dispatch = function() {
+-    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
+-    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
+-    return dispatch;
+-  };
+-  function d3_dispatch() {}
+-  d3_dispatch.prototype.on = function(type, listener) {
+-    var i = type.indexOf("."), name = "";
+-    if (i >= 0) {
+-      name = type.slice(i + 1);
+-      type = type.slice(0, i);
+-    }
+-    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
+-    if (arguments.length === 2) {
+-      if (listener == null) for (type in this) {
+-        if (this.hasOwnProperty(type)) this[type].on(name, null);
+-      }
+-      return this;
+-    }
+-  };
+-  function d3_dispatch_event(dispatch) {
+-    var listeners = [], listenerByName = new d3_Map();
+-    function event() {
+-      var z = listeners, i = -1, n = z.length, l;
+-      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
+-      return dispatch;
+-    }
+-    event.on = function(name, listener) {
+-      var l = listenerByName.get(name), i;
+-      if (arguments.length < 2) return l && l.on;
+-      if (l) {
+-        l.on = null;
+-        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
+-        listenerByName.remove(name);
+-      }
+-      if (listener) listeners.push(listenerByName.set(name, {
+-        on: listener
+-      }));
+-      return dispatch;
+-    };
+-    return event;
+-  }
+-  d3.event = null;
+-  function d3_eventPreventDefault() {
+-    d3.event.preventDefault();
+-  }
+-  function d3_eventSource() {
+-    var e = d3.event, s;
+-    while (s = e.sourceEvent) e = s;
+-    return e;
+-  }
+-  function d3_eventDispatch(target) {
+-    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
+-    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
+-    dispatch.of = function(thiz, argumentz) {
+-      return function(e1) {
+-        try {
+-          var e0 = e1.sourceEvent = d3.event;
+-          e1.target = target;
+-          d3.event = e1;
+-          dispatch[e1.type].apply(thiz, argumentz);
+-        } finally {
+-          d3.event = e0;
+-        }
+-      };
+-    };
+-    return dispatch;
+-  }
+-  d3.requote = function(s) {
+-    return s.replace(d3_requote_re, "\\$&");
+-  };
+-  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
+-  var d3_subclass = {}.__proto__ ? function(object, prototype) {
+-    object.__proto__ = prototype;
+-  } : function(object, prototype) {
+-    for (var property in prototype) object[property] = prototype[property];
+-  };
+-  function d3_selection(groups) {
+-    d3_subclass(groups, d3_selectionPrototype);
+-    return groups;
+-  }
+-  var d3_select = function(s, n) {
+-    return n.querySelector(s);
+-  }, d3_selectAll = function(s, n) {
+-    return n.querySelectorAll(s);
+-  }, d3_selectMatches = function(n, s) {
+-    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
+-    d3_selectMatches = function(n, s) {
+-      return d3_selectMatcher.call(n, s);
+-    };
+-    return d3_selectMatches(n, s);
+-  };
+-  if (typeof Sizzle === "function") {
+-    d3_select = function(s, n) {
+-      return Sizzle(s, n)[0] || null;
+-    };
+-    d3_selectAll = Sizzle;
+-    d3_selectMatches = Sizzle.matchesSelector;
+-  }
+-  d3.selection = function() {
+-    return d3.select(d3_document.documentElement);
+-  };
+-  var d3_selectionPrototype = d3.selection.prototype = [];
+-  d3_selectionPrototype.select = function(selector) {
+-    var subgroups = [], subgroup, subnode, group, node;
+-    selector = d3_selection_selector(selector);
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      subgroups.push(subgroup = []);
+-      subgroup.parentNode = (group = this[j]).parentNode;
+-      for (var i = -1, n = group.length; ++i < n; ) {
+-        if (node = group[i]) {
+-          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
+-          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
+-        } else {
+-          subgroup.push(null);
+-        }
+-      }
+-    }
+-    return d3_selection(subgroups);
+-  };
+-  function d3_selection_selector(selector) {
+-    return typeof selector === "function" ? selector : function() {
+-      return d3_select(selector, this);
+-    };
+-  }
+-  d3_selectionPrototype.selectAll = function(selector) {
+-    var subgroups = [], subgroup, node;
+-    selector = d3_selection_selectorAll(selector);
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
+-        if (node = group[i]) {
+-          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
+-          subgroup.parentNode = node;
+-        }
+-      }
+-    }
+-    return d3_selection(subgroups);
+-  };
+-  function d3_selection_selectorAll(selector) {
+-    return typeof selector === "function" ? selector : function() {
+-      return d3_selectAll(selector, this);
+-    };
+-  }
+-  var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
+-  var d3_nsPrefix = {
+-    svg: "http://www.w3.org/2000/svg",
+-    xhtml: d3_nsXhtml,
+-    xlink: "http://www.w3.org/1999/xlink",
+-    xml: "http://www.w3.org/XML/1998/namespace",
+-    xmlns: "http://www.w3.org/2000/xmlns/"
+-  };
+-  d3.ns = {
+-    prefix: d3_nsPrefix,
+-    qualify: function(name) {
+-      var i = name.indexOf(":"), prefix = name;
+-      if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
+-      return d3_nsPrefix.hasOwnProperty(prefix) ? {
+-        space: d3_nsPrefix[prefix],
+-        local: name
+-      } : name;
+-    }
+-  };
+-  d3_selectionPrototype.attr = function(name, value) {
+-    if (arguments.length < 2) {
+-      if (typeof name === "string") {
+-        var node = this.node();
+-        name = d3.ns.qualify(name);
+-        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
+-      }
+-      for (value in name) this.each(d3_selection_attr(value, name[value]));
+-      return this;
+-    }
+-    return this.each(d3_selection_attr(name, value));
+-  };
+-  function d3_selection_attr(name, value) {
+-    name = d3.ns.qualify(name);
+-    function attrNull() {
+-      this.removeAttribute(name);
+-    }
+-    function attrNullNS() {
+-      this.removeAttributeNS(name.space, name.local);
+-    }
+-    function attrConstant() {
+-      this.setAttribute(name, value);
+-    }
+-    function attrConstantNS() {
+-      this.setAttributeNS(name.space, name.local, value);
+-    }
+-    function attrFunction() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
+-    }
+-    function attrFunctionNS() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
+-    }
+-    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
+-  }
+-  function d3_collapse(s) {
+-    return s.trim().replace(/\s+/g, " ");
+-  }
+-  d3_selectionPrototype.classed = function(name, value) {
+-    if (arguments.length < 2) {
+-      if (typeof name === "string") {
+-        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
+-        if (value = node.classList) {
+-          while (++i < n) if (!value.contains(name[i])) return false;
+-        } else {
+-          value = node.getAttribute("class");
+-          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
+-        }
+-        return true;
+-      }
+-      for (value in name) this.each(d3_selection_classed(value, name[value]));
+-      return this;
+-    }
+-    return this.each(d3_selection_classed(name, value));
+-  };
+-  function d3_selection_classedRe(name) {
+-    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
+-  }
+-  function d3_selection_classes(name) {
+-    return (name + "").trim().split(/^|\s+/);
+-  }
+-  function d3_selection_classed(name, value) {
+-    name = d3_selection_classes(name).map(d3_selection_classedName);
+-    var n = name.length;
+-    function classedConstant() {
+-      var i = -1;
+-      while (++i < n) name[i](this, value);
+-    }
+-    function classedFunction() {
+-      var i = -1, x = value.apply(this, arguments);
+-      while (++i < n) name[i](this, x);
+-    }
+-    return typeof value === "function" ? classedFunction : classedConstant;
+-  }
+-  function d3_selection_classedName(name) {
+-    var re = d3_selection_classedRe(name);
+-    return function(node, value) {
+-      if (c = node.classList) return value ? c.add(name) : c.remove(name);
+-      var c = node.getAttribute("class") || "";
+-      if (value) {
+-        re.lastIndex = 0;
+-        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
+-      } else {
+-        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
+-      }
+-    };
+-  }
+-  d3_selectionPrototype.style = function(name, value, priority) {
+-    var n = arguments.length;
+-    if (n < 3) {
+-      if (typeof name !== "string") {
+-        if (n < 2) value = "";
+-        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
+-        return this;
+-      }
+-      if (n < 2) {
+-        var node = this.node();
+-        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
+-      }
+-      priority = "";
+-    }
+-    return this.each(d3_selection_style(name, value, priority));
+-  };
+-  function d3_selection_style(name, value, priority) {
+-    function styleNull() {
+-      this.style.removeProperty(name);
+-    }
+-    function styleConstant() {
+-      this.style.setProperty(name, value, priority);
+-    }
+-    function styleFunction() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
+-    }
+-    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
+-  }
+-  d3_selectionPrototype.property = function(name, value) {
+-    if (arguments.length < 2) {
+-      if (typeof name === "string") return this.node()[name];
+-      for (value in name) this.each(d3_selection_property(value, name[value]));
+-      return this;
+-    }
+-    return this.each(d3_selection_property(name, value));
+-  };
+-  function d3_selection_property(name, value) {
+-    function propertyNull() {
+-      delete this[name];
+-    }
+-    function propertyConstant() {
+-      this[name] = value;
+-    }
+-    function propertyFunction() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) delete this[name]; else this[name] = x;
+-    }
+-    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
+-  }
+-  d3_selectionPrototype.text = function(value) {
+-    return arguments.length ? this.each(typeof value === "function" ? function() {
+-      var v = value.apply(this, arguments);
+-      this.textContent = v == null ? "" : v;
+-    } : value == null ? function() {
+-      this.textContent = "";
+-    } : function() {
+-      this.textContent = value;
+-    }) : this.node().textContent;
+-  };
+-  d3_selectionPrototype.html = function(value) {
+-    return arguments.length ? this.each(typeof value === "function" ? function() {
+-      var v = value.apply(this, arguments);
+-      this.innerHTML = v == null ? "" : v;
+-    } : value == null ? function() {
+-      this.innerHTML = "";
+-    } : function() {
+-      this.innerHTML = value;
+-    }) : this.node().innerHTML;
+-  };
+-  d3_selectionPrototype.append = function(name) {
+-    name = d3_selection_creator(name);
+-    return this.select(function() {
+-      return this.appendChild(name.apply(this, arguments));
+-    });
+-  };
+-  function d3_selection_creator(name) {
+-    function create() {
+-      var document = this.ownerDocument, namespace = this.namespaceURI;
+-      return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
+-    }
+-    function createNS() {
+-      return this.ownerDocument.createElementNS(name.space, name.local);
+-    }
+-    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
+-  }
+-  d3_selectionPrototype.insert = function(name, before) {
+-    name = d3_selection_creator(name);
+-    before = d3_selection_selector(before);
+-    return this.select(function() {
+-      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
+-    });
+-  };
+-  d3_selectionPrototype.remove = function() {
+-    return this.each(d3_selectionRemove);
+-  };
+-  function d3_selectionRemove() {
+-    var parent = this.parentNode;
+-    if (parent) parent.removeChild(this);
+-  }
+-  d3_selectionPrototype.data = function(value, key) {
+-    var i = -1, n = this.length, group, node;
+-    if (!arguments.length) {
+-      value = new Array(n = (group = this[0]).length);
+-      while (++i < n) {
+-        if (node = group[i]) {
+-          value[i] = node.__data__;
+-        }
+-      }
+-      return value;
+-    }
+-    function bind(group, groupData) {
+-      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
+-      if (key) {
+-        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
+-        for (i = -1; ++i < n; ) {
+-          if (node = group[i]) {
+-            if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
+-              exitNodes[i] = node;
+-            } else {
+-              nodeByKeyValue.set(keyValue, node);
+-            }
+-            keyValues[i] = keyValue;
+-          }
+-        }
+-        for (i = -1; ++i < m; ) {
+-          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
+-            enterNodes[i] = d3_selection_dataNode(nodeData);
+-          } else if (node !== true) {
+-            updateNodes[i] = node;
+-            node.__data__ = nodeData;
+-          }
+-          nodeByKeyValue.set(keyValue, true);
+-        }
+-        for (i = -1; ++i < n; ) {
+-          if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
+-            exitNodes[i] = group[i];
+-          }
+-        }
+-      } else {
+-        for (i = -1; ++i < n0; ) {
+-          node = group[i];
+-          nodeData = groupData[i];
+-          if (node) {
+-            node.__data__ = nodeData;
+-            updateNodes[i] = node;
+-          } else {
+-            enterNodes[i] = d3_selection_dataNode(nodeData);
+-          }
+-        }
+-        for (;i < m; ++i) {
+-          enterNodes[i] = d3_selection_dataNode(groupData[i]);
+-        }
+-        for (;i < n; ++i) {
+-          exitNodes[i] = group[i];
+-        }
+-      }
+-      enterNodes.update = updateNodes;
+-      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
+-      enter.push(enterNodes);
+-      update.push(updateNodes);
+-      exit.push(exitNodes);
+-    }
+-    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
+-    if (typeof value === "function") {
+-      while (++i < n) {
+-        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
+-      }
+-    } else {
+-      while (++i < n) {
+-        bind(group = this[i], value);
+-      }
+-    }
+-    update.enter = function() {
+-      return enter;
+-    };
+-    update.exit = function() {
+-      return exit;
+-    };
+-    return update;
+-  };
+-  function d3_selection_dataNode(data) {
+-    return {
+-      __data__: data
+-    };
++      return value;
++    }
++    function bind(group, groupData) {
++      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
++      if (key) {
++        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
++        for (i = -1; ++i < n; ) {
++          if (node = group[i]) {
++            if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
++              exitNodes[i] = node;
++            } else {
++              nodeByKeyValue.set(keyValue, node);
++            }
++            keyValues[i] = keyValue;
++          }
++        }
++        for (i = -1; ++i < m; ) {
++          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
++            enterNodes[i] = d3_selection_dataNode(nodeData);
++          } else if (node !== true) {
++            updateNodes[i] = node;
++            node.__data__ = nodeData;
++          }
++          nodeByKeyValue.set(keyValue, true);
++        }
++        for (i = -1; ++i < n; ) {
++          if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
++            exitNodes[i] = group[i];
++          }
++        }
++      } else {
++        for (i = -1; ++i < n0; ) {
++          node = group[i];
++          nodeData = groupData[i];
++          if (node) {
++            node.__data__ = nodeData;
++            updateNodes[i] = node;
++          } else {
++            enterNodes[i] = d3_selection_dataNode(nodeData);
++          }
++        }
++        for (;i < m; ++i) {
++          enterNodes[i] = d3_selection_dataNode(groupData[i]);
++        }
++        for (;i < n; ++i) {
++          exitNodes[i] = group[i];
++        }
++      }
++      enterNodes.update = updateNodes;
++      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
++      enter.push(enterNodes);
++      update.push(updateNodes);
++      exit.push(exitNodes);
++    }
++    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
++    if (typeof value === "function") {
++      while (++i < n) {
++        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
++      }
++    } else {
++      while (++i < n) {
++        bind(group = this[i], value);
++      }
++    }
++    update.enter = function() {
++      return enter;
++    };
++    update.exit = function() {
++      return exit;
++    };
++    return update;
++  };
++  function d3_selection_dataNode(data) {
++    return {
++      __data__: data
++    };
+   }
+   d3_selectionPrototype.datum = function(value) {
+     return arguments.length ? this.property("__data__", value) : this.property("__data__");
+@@ -12730,7 +12253,7 @@ module.exports = require("cwise-compiler")
+         λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
+       }
+     }
+-    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
++    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
+   }
+   function d3_geo_clipCircle(radius) {
+     var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
+@@ -18757,7 +18280,111 @@ module.exports = require("cwise-compiler")
+   });
+   if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
+ }();
+-},{}],63:[function(require,module,exports){
++},{}],55:[function(require,module,exports){
++(function (Buffer){
++var hasTypedArrays = false
++if(typeof Float64Array !== "undefined") {
++  var DOUBLE_VIEW = new Float64Array(1)
++    , UINT_VIEW   = new Uint32Array(DOUBLE_VIEW.buffer)
++  DOUBLE_VIEW[0] = 1.0
++  hasTypedArrays = true
++  if(UINT_VIEW[1] === 0x3ff00000) {
++    //Use little endian
++    module.exports = function doubleBitsLE(n) {
++      DOUBLE_VIEW[0] = n
++      return [ UINT_VIEW[0], UINT_VIEW[1] ]
++    }
++    function toDoubleLE(lo, hi) {
++      UINT_VIEW[0] = lo
++      UINT_VIEW[1] = hi
++      return DOUBLE_VIEW[0]
++    }
++    module.exports.pack = toDoubleLE
++    function lowUintLE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[0]
++    }
++    module.exports.lo = lowUintLE
++    function highUintLE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[1]
++    }
++    module.exports.hi = highUintLE
++  } else if(UINT_VIEW[0] === 0x3ff00000) {
++    //Use big endian
++    module.exports = function doubleBitsBE(n) {
++      DOUBLE_VIEW[0] = n
++      return [ UINT_VIEW[1], UINT_VIEW[0] ]
++    }
++    function toDoubleBE(lo, hi) {
++      UINT_VIEW[1] = lo
++      UINT_VIEW[0] = hi
++      return DOUBLE_VIEW[0]
++    }
++    module.exports.pack = toDoubleBE
++    function lowUintBE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[1]
++    }
++    module.exports.lo = lowUintBE
++    function highUintBE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[0]
++    }
++    module.exports.hi = highUintBE
++  } else {
++    hasTypedArrays = false
++  }
++}
++if(!hasTypedArrays) {
++  var buffer = new Buffer(8)
++  module.exports = function doubleBits(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return [ buffer.readUInt32LE(0, true), buffer.readUInt32LE(4, true) ]
++  }
++  function toDouble(lo, hi) {
++    buffer.writeUInt32LE(lo, 0, true)
++    buffer.writeUInt32LE(hi, 4, true)
++    return buffer.readDoubleLE(0, true)
++  }
++  module.exports.pack = toDouble  
++  function lowUint(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return buffer.readUInt32LE(0, true)
++  }
++  module.exports.lo = lowUint
++  function highUint(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return buffer.readUInt32LE(4, true)
++  }
++  module.exports.hi = highUint
++}
++
++module.exports.sign = function(n) {
++  return module.exports.hi(n) >>> 31
++}
++
++module.exports.exponent = function(n) {
++  var b = module.exports.hi(n)
++  return ((b<<1) >>> 21) - 1023
++}
++
++module.exports.fraction = function(n) {
++  var lo = module.exports.lo(n)
++  var hi = module.exports.hi(n)
++  var b = hi & ((1<<20) - 1)
++  if(hi & 0x7ff00000) {
++    b += (1<<20)
++  }
++  return [lo, b]
++}
++
++module.exports.denormalized = function(n) {
++  var hi = module.exports.hi(n)
++  return !(hi & 0x7ff00000)
++}
++}).call(this,require("buffer").Buffer)
++},{"buffer":37}],56:[function(require,module,exports){
+ "use strict"
+ 
+ function dupe_array(count, value, i) {
+@@ -18807,10941 +18434,11163 @@ function dupe(count, value) {
+ }
+ 
+ module.exports = dupe
+-},{}],64:[function(require,module,exports){
++},{}],57:[function(require,module,exports){
++"use strict"
++
++module.exports = edgeToAdjacency
++
++var uniq = require("uniq")
++
++function edgeToAdjacency(edges, numVertices) {
++  var numEdges = edges.length
++  if(typeof numVertices !== "number") {
++    numVertices = 0
++    for(var i=0; i<numEdges; ++i) {
++      var e = edges[i]
++      numVertices = Math.max(numVertices, e[0], e[1])
++    }
++    numVertices = (numVertices|0) + 1
++  }
++  numVertices = numVertices|0
++  var adj = new Array(numVertices)
++  for(var i=0; i<numVertices; ++i) {
++    adj[i] = []
++  }
++  for(var i=0; i<numEdges; ++i) {
++    var e = edges[i]
++    adj[e[0]].push(e[1])
++    adj[e[1]].push(e[0])
++  }
++  for(var j=0; j<numVertices; ++j) {
++    uniq(adj[j], function(a, b) {
++      return a - b
++    })
++  }
++  return adj
++}
++},{"uniq":164}],58:[function(require,module,exports){
+ (function (process,global){
+ /*!
+  * @overview es6-promise - a tiny implementation of Promises/A+.
+  * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
+  * @license   Licensed under MIT license
+- *            See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
+- * @version   3.1.2
++ *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
++ * @version   3.3.1
+  */
+ 
+-(function() {
+-    "use strict";
+-    function lib$es6$promise$utils$$objectOrFunction(x) {
+-      return typeof x === 'function' || (typeof x === 'object' && x !== null);
+-    }
+-
+-    function lib$es6$promise$utils$$isFunction(x) {
+-      return typeof x === 'function';
+-    }
+-
+-    function lib$es6$promise$utils$$isMaybeThenable(x) {
+-      return typeof x === 'object' && x !== null;
+-    }
+-
+-    var lib$es6$promise$utils$$_isArray;
+-    if (!Array.isArray) {
+-      lib$es6$promise$utils$$_isArray = function (x) {
+-        return Object.prototype.toString.call(x) === '[object Array]';
+-      };
+-    } else {
+-      lib$es6$promise$utils$$_isArray = Array.isArray;
+-    }
+-
+-    var lib$es6$promise$utils$$isArray = lib$es6$promise$utils$$_isArray;
+-    var lib$es6$promise$asap$$len = 0;
+-    var lib$es6$promise$asap$$vertxNext;
+-    var lib$es6$promise$asap$$customSchedulerFn;
+-
+-    var lib$es6$promise$asap$$asap = function asap(callback, arg) {
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len] = callback;
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len + 1] = arg;
+-      lib$es6$promise$asap$$len += 2;
+-      if (lib$es6$promise$asap$$len === 2) {
+-        // If len is 2, that means that we need to schedule an async flush.
+-        // If additional callbacks are queued before the queue is flushed, they
+-        // will be processed by this flush that we are scheduling.
+-        if (lib$es6$promise$asap$$customSchedulerFn) {
+-          lib$es6$promise$asap$$customSchedulerFn(lib$es6$promise$asap$$flush);
+-        } else {
+-          lib$es6$promise$asap$$scheduleFlush();
+-        }
+-      }
+-    }
+-
+-    function lib$es6$promise$asap$$setScheduler(scheduleFn) {
+-      lib$es6$promise$asap$$customSchedulerFn = scheduleFn;
+-    }
+-
+-    function lib$es6$promise$asap$$setAsap(asapFn) {
+-      lib$es6$promise$asap$$asap = asapFn;
+-    }
+-
+-    var lib$es6$promise$asap$$browserWindow = (typeof window !== 'undefined') ? window : undefined;
+-    var lib$es6$promise$asap$$browserGlobal = lib$es6$promise$asap$$browserWindow || {};
+-    var lib$es6$promise$asap$$BrowserMutationObserver = lib$es6$promise$asap$$browserGlobal.MutationObserver || lib$es6$promise$asap$$browserGlobal.WebKitMutationObserver;
+-    var lib$es6$promise$asap$$isNode = typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';
+-
+-    // test for web worker but not in IE10
+-    var lib$es6$promise$asap$$isWorker = typeof Uint8ClampedArray !== 'undefined' &&
+-      typeof importScripts !== 'undefined' &&
+-      typeof MessageChannel !== 'undefined';
+-
+-    // node
+-    function lib$es6$promise$asap$$useNextTick() {
+-      // node version 0.10.x displays a deprecation warning when nextTick is used recursively
+-      // see https://github.com/cujojs/when/issues/410 for details
+-      return function() {
+-        process.nextTick(lib$es6$promise$asap$$flush);
+-      };
+-    }
+-
+-    // vertx
+-    function lib$es6$promise$asap$$useVertxTimer() {
+-      return function() {
+-        lib$es6$promise$asap$$vertxNext(lib$es6$promise$asap$$flush);
+-      };
+-    }
+-
+-    function lib$es6$promise$asap$$useMutationObserver() {
+-      var iterations = 0;
+-      var observer = new lib$es6$promise$asap$$BrowserMutationObserver(lib$es6$promise$asap$$flush);
+-      var node = document.createTextNode('');
+-      observer.observe(node, { characterData: true });
+-
+-      return function() {
+-        node.data = (iterations = ++iterations % 2);
+-      };
+-    }
+-
+-    // web worker
+-    function lib$es6$promise$asap$$useMessageChannel() {
+-      var channel = new MessageChannel();
+-      channel.port1.onmessage = lib$es6$promise$asap$$flush;
+-      return function () {
+-        channel.port2.postMessage(0);
+-      };
+-    }
+-
+-    function lib$es6$promise$asap$$useSetTimeout() {
+-      return function() {
+-        setTimeout(lib$es6$promise$asap$$flush, 1);
+-      };
+-    }
++(function (global, factory) {
++    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
++    typeof define === 'function' && define.amd ? define(factory) :
++    (global.ES6Promise = factory());
++}(this, (function () { 'use strict';
+ 
+-    var lib$es6$promise$asap$$queue = new Array(1000);
+-    function lib$es6$promise$asap$$flush() {
+-      for (var i = 0; i < lib$es6$promise$asap$$len; i+=2) {
+-        var callback = lib$es6$promise$asap$$queue[i];
+-        var arg = lib$es6$promise$asap$$queue[i+1];
++function objectOrFunction(x) {
++  return typeof x === 'function' || typeof x === 'object' && x !== null;
++}
+ 
+-        callback(arg);
++function isFunction(x) {
++  return typeof x === 'function';
++}
+ 
+-        lib$es6$promise$asap$$queue[i] = undefined;
+-        lib$es6$promise$asap$$queue[i+1] = undefined;
+-      }
++var _isArray = undefined;
++if (!Array.isArray) {
++  _isArray = function (x) {
++    return Object.prototype.toString.call(x) === '[object Array]';
++  };
++} else {
++  _isArray = Array.isArray;
++}
+ 
+-      lib$es6$promise$asap$$len = 0;
+-    }
++var isArray = _isArray;
+ 
+-    function lib$es6$promise$asap$$attemptVertx() {
+-      try {
+-        var r = require;
+-        var vertx = r('vertx');
+-        lib$es6$promise$asap$$vertxNext = vertx.runOnLoop || vertx.runOnContext;
+-        return lib$es6$promise$asap$$useVertxTimer();
+-      } catch(e) {
+-        return lib$es6$promise$asap$$useSetTimeout();
+-      }
+-    }
++var len = 0;
++var vertxNext = undefined;
++var customSchedulerFn = undefined;
+ 
+-    var lib$es6$promise$asap$$scheduleFlush;
+-    // Decide what async method to use to triggering processing of queued callbacks:
+-    if (lib$es6$promise$asap$$isNode) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useNextTick();
+-    } else if (lib$es6$promise$asap$$BrowserMutationObserver) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMutationObserver();
+-    } else if (lib$es6$promise$asap$$isWorker) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMessageChannel();
+-    } else if (lib$es6$promise$asap$$browserWindow === undefined && typeof require === 'function') {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$attemptVertx();
++var asap = function asap(callback, arg) {
++  queue[len] = callback;
++  queue[len + 1] = arg;
++  len += 2;
++  if (len === 2) {
++    // If len is 2, that means that we need to schedule an async flush.
++    // If additional callbacks are queued before the queue is flushed, they
++    // will be processed by this flush that we are scheduling.
++    if (customSchedulerFn) {
++      customSchedulerFn(flush);
+     } else {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useSetTimeout();
+-    }
+-    function lib$es6$promise$then$$then(onFulfillment, onRejection) {
+-      var parent = this;
+-      var state = parent._state;
+-
+-      if (state === lib$es6$promise$$internal$$FULFILLED && !onFulfillment || state === lib$es6$promise$$internal$$REJECTED && !onRejection) {
+-        return this;
+-      }
+-
+-      var child = new this.constructor(lib$es6$promise$$internal$$noop);
+-      var result = parent._result;
+-
+-      if (state) {
+-        var callback = arguments[state - 1];
+-        lib$es6$promise$asap$$asap(function(){
+-          lib$es6$promise$$internal$$invokeCallback(state, child, callback, result);
+-        });
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection);
+-      }
+-
+-      return child;
+-    }
+-    var lib$es6$promise$then$$default = lib$es6$promise$then$$then;
+-    function lib$es6$promise$promise$resolve$$resolve(object) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
+-
+-      if (object && typeof object === 'object' && object.constructor === Constructor) {
+-        return object;
+-      }
+-
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$resolve(promise, object);
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$resolve$$default = lib$es6$promise$promise$resolve$$resolve;
+-
+-    function lib$es6$promise$$internal$$noop() {}
+-
+-    var lib$es6$promise$$internal$$PENDING   = void 0;
+-    var lib$es6$promise$$internal$$FULFILLED = 1;
+-    var lib$es6$promise$$internal$$REJECTED  = 2;
+-
+-    var lib$es6$promise$$internal$$GET_THEN_ERROR = new lib$es6$promise$$internal$$ErrorObject();
+-
+-    function lib$es6$promise$$internal$$selfFulfillment() {
+-      return new TypeError("You cannot resolve a promise with itself");
+-    }
+-
+-    function lib$es6$promise$$internal$$cannotReturnOwn() {
+-      return new TypeError('A promises callback cannot return that same promise.');
++      scheduleFlush();
+     }
++  }
++};
+ 
+-    function lib$es6$promise$$internal$$getThen(promise) {
+-      try {
+-        return promise.then;
+-      } catch(error) {
+-        lib$es6$promise$$internal$$GET_THEN_ERROR.error = error;
+-        return lib$es6$promise$$internal$$GET_THEN_ERROR;
+-      }
+-    }
++function setScheduler(scheduleFn) {
++  customSchedulerFn = scheduleFn;
++}
+ 
+-    function lib$es6$promise$$internal$$tryThen(then, value, fulfillmentHandler, rejectionHandler) {
+-      try {
+-        then.call(value, fulfillmentHandler, rejectionHandler);
+-      } catch(e) {
+-        return e;
+-      }
+-    }
++function setAsap(asapFn) {
++  asap = asapFn;
++}
+ 
+-    function lib$es6$promise$$internal$$handleForeignThenable(promise, thenable, then) {
+-       lib$es6$promise$asap$$asap(function(promise) {
+-        var sealed = false;
+-        var error = lib$es6$promise$$internal$$tryThen(then, thenable, function(value) {
+-          if (sealed) { return; }
+-          sealed = true;
+-          if (thenable !== value) {
+-            lib$es6$promise$$internal$$resolve(promise, value);
+-          } else {
+-            lib$es6$promise$$internal$$fulfill(promise, value);
+-          }
+-        }, function(reason) {
+-          if (sealed) { return; }
+-          sealed = true;
++var browserWindow = typeof window !== 'undefined' ? window : undefined;
++var browserGlobal = browserWindow || {};
++var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
++var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]';
+ 
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        }, 'Settle: ' + (promise._label || ' unknown promise'));
++// test for web worker but not in IE10
++var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined';
+ 
+-        if (!sealed && error) {
+-          sealed = true;
+-          lib$es6$promise$$internal$$reject(promise, error);
+-        }
+-      }, promise);
+-    }
++// node
++function useNextTick() {
++  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
++  // see https://github.com/cujojs/when/issues/410 for details
++  return function () {
++    return process.nextTick(flush);
++  };
++}
+ 
+-    function lib$es6$promise$$internal$$handleOwnThenable(promise, thenable) {
+-      if (thenable._state === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, thenable._result);
+-      } else if (thenable._state === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, thenable._result);
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(thenable, undefined, function(value) {
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      }
+-    }
++// vertx
++function useVertxTimer() {
++  return function () {
++    vertxNext(flush);
++  };
++}
+ 
+-    function lib$es6$promise$$internal$$handleMaybeThenable(promise, maybeThenable, then) {
+-      if (maybeThenable.constructor === promise.constructor &&
+-          then === lib$es6$promise$then$$default &&
+-          constructor.resolve === lib$es6$promise$promise$resolve$$default) {
+-        lib$es6$promise$$internal$$handleOwnThenable(promise, maybeThenable);
+-      } else {
+-        if (then === lib$es6$promise$$internal$$GET_THEN_ERROR) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$GET_THEN_ERROR.error);
+-        } else if (then === undefined) {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        } else if (lib$es6$promise$utils$$isFunction(then)) {
+-          lib$es6$promise$$internal$$handleForeignThenable(promise, maybeThenable, then);
+-        } else {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        }
+-      }
+-    }
++function useMutationObserver() {
++  var iterations = 0;
++  var observer = new BrowserMutationObserver(flush);
++  var node = document.createTextNode('');
++  observer.observe(node, { characterData: true });
+ 
+-    function lib$es6$promise$$internal$$resolve(promise, value) {
+-      if (promise === value) {
+-        lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$selfFulfillment());
+-      } else if (lib$es6$promise$utils$$objectOrFunction(value)) {
+-        lib$es6$promise$$internal$$handleMaybeThenable(promise, value, lib$es6$promise$$internal$$getThen(value));
+-      } else {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      }
+-    }
++  return function () {
++    node.data = iterations = ++iterations % 2;
++  };
++}
+ 
+-    function lib$es6$promise$$internal$$publishRejection(promise) {
+-      if (promise._onerror) {
+-        promise._onerror(promise._result);
+-      }
++// web worker
++function useMessageChannel() {
++  var channel = new MessageChannel();
++  channel.port1.onmessage = flush;
++  return function () {
++    return channel.port2.postMessage(0);
++  };
++}
+ 
+-      lib$es6$promise$$internal$$publish(promise);
+-    }
++function useSetTimeout() {
++  // Store setTimeout reference so es6-promise will be unaffected by
++  // other code modifying setTimeout (like sinon.useFakeTimers())
++  var globalSetTimeout = setTimeout;
++  return function () {
++    return globalSetTimeout(flush, 1);
++  };
++}
+ 
+-    function lib$es6$promise$$internal$$fulfill(promise, value) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
++var queue = new Array(1000);
++function flush() {
++  for (var i = 0; i < len; i += 2) {
++    var callback = queue[i];
++    var arg = queue[i + 1];
+ 
+-      promise._result = value;
+-      promise._state = lib$es6$promise$$internal$$FULFILLED;
++    callback(arg);
+ 
+-      if (promise._subscribers.length !== 0) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, promise);
+-      }
+-    }
++    queue[i] = undefined;
++    queue[i + 1] = undefined;
++  }
+ 
+-    function lib$es6$promise$$internal$$reject(promise, reason) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
+-      promise._state = lib$es6$promise$$internal$$REJECTED;
+-      promise._result = reason;
++  len = 0;
++}
+ 
+-      lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publishRejection, promise);
+-    }
++function attemptVertx() {
++  try {
++    var r = require;
++    var vertx = r('vertx');
++    vertxNext = vertx.runOnLoop || vertx.runOnContext;
++    return useVertxTimer();
++  } catch (e) {
++    return useSetTimeout();
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection) {
+-      var subscribers = parent._subscribers;
+-      var length = subscribers.length;
++var scheduleFlush = undefined;
++// Decide what async method to use to triggering processing of queued callbacks:
++if (isNode) {
++  scheduleFlush = useNextTick();
++} else if (BrowserMutationObserver) {
++  scheduleFlush = useMutationObserver();
++} else if (isWorker) {
++  scheduleFlush = useMessageChannel();
++} else if (browserWindow === undefined && typeof require === 'function') {
++  scheduleFlush = attemptVertx();
++} else {
++  scheduleFlush = useSetTimeout();
++}
+ 
+-      parent._onerror = null;
++function then(onFulfillment, onRejection) {
++  var _arguments = arguments;
+ 
+-      subscribers[length] = child;
+-      subscribers[length + lib$es6$promise$$internal$$FULFILLED] = onFulfillment;
+-      subscribers[length + lib$es6$promise$$internal$$REJECTED]  = onRejection;
++  var parent = this;
+ 
+-      if (length === 0 && parent._state) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, parent);
+-      }
+-    }
++  var child = new this.constructor(noop);
+ 
+-    function lib$es6$promise$$internal$$publish(promise) {
+-      var subscribers = promise._subscribers;
+-      var settled = promise._state;
++  if (child[PROMISE_ID] === undefined) {
++    makePromise(child);
++  }
+ 
+-      if (subscribers.length === 0) { return; }
++  var _state = parent._state;
+ 
+-      var child, callback, detail = promise._result;
++  if (_state) {
++    (function () {
++      var callback = _arguments[_state - 1];
++      asap(function () {
++        return invokeCallback(_state, child, callback, parent._result);
++      });
++    })();
++  } else {
++    subscribe(parent, child, onFulfillment, onRejection);
++  }
+ 
+-      for (var i = 0; i < subscribers.length; i += 3) {
+-        child = subscribers[i];
+-        callback = subscribers[i + settled];
++  return child;
++}
+ 
+-        if (child) {
+-          lib$es6$promise$$internal$$invokeCallback(settled, child, callback, detail);
+-        } else {
+-          callback(detail);
+-        }
+-      }
++/**
++  `Promise.resolve` returns a promise that will become resolved with the
++  passed `value`. It is shorthand for the following:
+ 
+-      promise._subscribers.length = 0;
+-    }
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    resolve(1);
++  });
+ 
+-    function lib$es6$promise$$internal$$ErrorObject() {
+-      this.error = null;
+-    }
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
+ 
+-    var lib$es6$promise$$internal$$TRY_CATCH_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-    function lib$es6$promise$$internal$$tryCatch(callback, detail) {
+-      try {
+-        return callback(detail);
+-      } catch(e) {
+-        lib$es6$promise$$internal$$TRY_CATCH_ERROR.error = e;
+-        return lib$es6$promise$$internal$$TRY_CATCH_ERROR;
+-      }
+-    }
++  ```javascript
++  let promise = Promise.resolve(1);
+ 
+-    function lib$es6$promise$$internal$$invokeCallback(settled, promise, callback, detail) {
+-      var hasCallback = lib$es6$promise$utils$$isFunction(callback),
+-          value, error, succeeded, failed;
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
++
++  @method resolve
++  @static
++  @param {Any} value value that the returned promise will be resolved with
++  Useful for tooling.
++  @return {Promise} a promise that will become fulfilled with the given
++  `value`
++*/
++function resolve(object) {
++  /*jshint validthis:true */
++  var Constructor = this;
+ 
+-      if (hasCallback) {
+-        value = lib$es6$promise$$internal$$tryCatch(callback, detail);
++  if (object && typeof object === 'object' && object.constructor === Constructor) {
++    return object;
++  }
+ 
+-        if (value === lib$es6$promise$$internal$$TRY_CATCH_ERROR) {
+-          failed = true;
+-          error = value.error;
+-          value = null;
+-        } else {
+-          succeeded = true;
+-        }
++  var promise = new Constructor(noop);
++  _resolve(promise, object);
++  return promise;
++}
+ 
+-        if (promise === value) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$cannotReturnOwn());
+-          return;
+-        }
++var PROMISE_ID = Math.random().toString(36).substring(16);
+ 
+-      } else {
+-        value = detail;
+-        succeeded = true;
+-      }
++function noop() {}
+ 
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) {
+-        // noop
+-      } else if (hasCallback && succeeded) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      } else if (failed) {
+-        lib$es6$promise$$internal$$reject(promise, error);
+-      } else if (settled === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      } else if (settled === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, value);
+-      }
+-    }
++var PENDING = void 0;
++var FULFILLED = 1;
++var REJECTED = 2;
+ 
+-    function lib$es6$promise$$internal$$initializePromise(promise, resolver) {
+-      try {
+-        resolver(function resolvePromise(value){
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function rejectPromise(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      } catch(e) {
+-        lib$es6$promise$$internal$$reject(promise, e);
+-      }
+-    }
++var GET_THEN_ERROR = new ErrorObject();
+ 
+-    function lib$es6$promise$promise$all$$all(entries) {
+-      return new lib$es6$promise$enumerator$$default(this, entries).promise;
+-    }
+-    var lib$es6$promise$promise$all$$default = lib$es6$promise$promise$all$$all;
+-    function lib$es6$promise$promise$race$$race(entries) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++function selfFulfillment() {
++  return new TypeError("You cannot resolve a promise with itself");
++}
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
++function cannotReturnOwn() {
++  return new TypeError('A promises callback cannot return that same promise.');
++}
+ 
+-      if (!lib$es6$promise$utils$$isArray(entries)) {
+-        lib$es6$promise$$internal$$reject(promise, new TypeError('You must pass an array to race.'));
+-        return promise;
+-      }
++function getThen(promise) {
++  try {
++    return promise.then;
++  } catch (error) {
++    GET_THEN_ERROR.error = error;
++    return GET_THEN_ERROR;
++  }
++}
+ 
+-      var length = entries.length;
++function tryThen(then, value, fulfillmentHandler, rejectionHandler) {
++  try {
++    then.call(value, fulfillmentHandler, rejectionHandler);
++  } catch (e) {
++    return e;
++  }
++}
+ 
+-      function onFulfillment(value) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
++function handleForeignThenable(promise, thenable, then) {
++  asap(function (promise) {
++    var sealed = false;
++    var error = tryThen(then, thenable, function (value) {
++      if (sealed) {
++        return;
+       }
+-
+-      function onRejection(reason) {
+-        lib$es6$promise$$internal$$reject(promise, reason);
++      sealed = true;
++      if (thenable !== value) {
++        _resolve(promise, value);
++      } else {
++        fulfill(promise, value);
+       }
+-
+-      for (var i = 0; promise._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        lib$es6$promise$$internal$$subscribe(Constructor.resolve(entries[i]), undefined, onFulfillment, onRejection);
++    }, function (reason) {
++      if (sealed) {
++        return;
+       }
++      sealed = true;
+ 
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$race$$default = lib$es6$promise$promise$race$$race;
+-    function lib$es6$promise$promise$reject$$reject(reason) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$reject(promise, reason);
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$reject$$default = lib$es6$promise$promise$reject$$reject;
+-
+-    var lib$es6$promise$promise$$counter = 0;
+-
+-    function lib$es6$promise$promise$$needsResolver() {
+-      throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
+-    }
++      _reject(promise, reason);
++    }, 'Settle: ' + (promise._label || ' unknown promise'));
+ 
+-    function lib$es6$promise$promise$$needsNew() {
+-      throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++    if (!sealed && error) {
++      sealed = true;
++      _reject(promise, error);
+     }
++  }, promise);
++}
+ 
+-    var lib$es6$promise$promise$$default = lib$es6$promise$promise$$Promise;
+-    /**
+-      Promise objects represent the eventual result of an asynchronous operation. The
+-      primary way of interacting with a promise is through its `then` method, which
+-      registers callbacks to receive either a promise's eventual value or the reason
+-      why the promise cannot be fulfilled.
+-
+-      Terminology
+-      -----------
+-
+-      - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
+-      - `thenable` is an object or function that defines a `then` method.
+-      - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
+-      - `exception` is a value that is thrown using the throw statement.
+-      - `reason` is a value that indicates why a promise was rejected.
+-      - `settled` the final resting state of a promise, fulfilled or rejected.
+-
+-      A promise can be in one of three states: pending, fulfilled, or rejected.
+-
+-      Promises that are fulfilled have a fulfillment value and are in the fulfilled
+-      state.  Promises that are rejected have a rejection reason and are in the
+-      rejected state.  A fulfillment value is never a thenable.
+-
+-      Promises can also be said to *resolve* a value.  If this value is also a
+-      promise, then the original promise's settled state will match the value's
+-      settled state.  So a promise that *resolves* a promise that rejects will
+-      itself reject, and a promise that *resolves* a promise that fulfills will
+-      itself fulfill.
+-
+-
+-      Basic Usage:
+-      ------------
+-
+-      ```js
+-      var promise = new Promise(function(resolve, reject) {
+-        // on success
+-        resolve(value);
+-
+-        // on failure
+-        reject(reason);
+-      });
+-
+-      promise.then(function(value) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
+-
+-      Advanced Usage:
+-      ---------------
+-
+-      Promises shine when abstracting away asynchronous interactions such as
+-      `XMLHttpRequest`s.
+-
+-      ```js
+-      function getJSON(url) {
+-        return new Promise(function(resolve, reject){
+-          var xhr = new XMLHttpRequest();
+-
+-          xhr.open('GET', url);
+-          xhr.onreadystatechange = handler;
+-          xhr.responseType = 'json';
+-          xhr.setRequestHeader('Accept', 'application/json');
+-          xhr.send();
+-
+-          function handler() {
+-            if (this.readyState === this.DONE) {
+-              if (this.status === 200) {
+-                resolve(this.response);
+-              } else {
+-                reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
+-              }
+-            }
+-          };
+-        });
+-      }
+-
+-      getJSON('/posts.json').then(function(json) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
+-
+-      Unlike callbacks, promises are great composable primitives.
+-
+-      ```js
+-      Promise.all([
+-        getJSON('/posts'),
+-        getJSON('/comments')
+-      ]).then(function(values){
+-        values[0] // => postsJSON
+-        values[1] // => commentsJSON
++function handleOwnThenable(promise, thenable) {
++  if (thenable._state === FULFILLED) {
++    fulfill(promise, thenable._result);
++  } else if (thenable._state === REJECTED) {
++    _reject(promise, thenable._result);
++  } else {
++    subscribe(thenable, undefined, function (value) {
++      return _resolve(promise, value);
++    }, function (reason) {
++      return _reject(promise, reason);
++    });
++  }
++}
+ 
+-        return values;
+-      });
+-      ```
+-
+-      @class Promise
+-      @param {function} resolver
+-      Useful for tooling.
+-      @constructor
+-    */
+-    function lib$es6$promise$promise$$Promise(resolver) {
+-      this._id = lib$es6$promise$promise$$counter++;
+-      this._state = undefined;
+-      this._result = undefined;
+-      this._subscribers = [];
+-
+-      if (lib$es6$promise$$internal$$noop !== resolver) {
+-        typeof resolver !== 'function' && lib$es6$promise$promise$$needsResolver();
+-        this instanceof lib$es6$promise$promise$$Promise ? lib$es6$promise$$internal$$initializePromise(this, resolver) : lib$es6$promise$promise$$needsNew();
+-      }
++function handleMaybeThenable(promise, maybeThenable, then$$) {
++  if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) {
++    handleOwnThenable(promise, maybeThenable);
++  } else {
++    if (then$$ === GET_THEN_ERROR) {
++      _reject(promise, GET_THEN_ERROR.error);
++    } else if (then$$ === undefined) {
++      fulfill(promise, maybeThenable);
++    } else if (isFunction(then$$)) {
++      handleForeignThenable(promise, maybeThenable, then$$);
++    } else {
++      fulfill(promise, maybeThenable);
+     }
++  }
++}
+ 
+-    lib$es6$promise$promise$$Promise.all = lib$es6$promise$promise$all$$default;
+-    lib$es6$promise$promise$$Promise.race = lib$es6$promise$promise$race$$default;
+-    lib$es6$promise$promise$$Promise.resolve = lib$es6$promise$promise$resolve$$default;
+-    lib$es6$promise$promise$$Promise.reject = lib$es6$promise$promise$reject$$default;
+-    lib$es6$promise$promise$$Promise._setScheduler = lib$es6$promise$asap$$setScheduler;
+-    lib$es6$promise$promise$$Promise._setAsap = lib$es6$promise$asap$$setAsap;
+-    lib$es6$promise$promise$$Promise._asap = lib$es6$promise$asap$$asap;
+-
+-    lib$es6$promise$promise$$Promise.prototype = {
+-      constructor: lib$es6$promise$promise$$Promise,
+-
+-    /**
+-      The primary way of interacting with a promise is through its `then` method,
+-      which registers callbacks to receive either a promise's eventual value or the
+-      reason why the promise cannot be fulfilled.
+-
+-      ```js
+-      findUser().then(function(user){
+-        // user is available
+-      }, function(reason){
+-        // user is unavailable, and you are given the reason why
+-      });
+-      ```
+-
+-      Chaining
+-      --------
+-
+-      The return value of `then` is itself a promise.  This second, 'downstream'
+-      promise is resolved with the return value of the first promise's fulfillment
+-      or rejection handler, or rejected if the handler throws an exception.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return user.name;
+-      }, function (reason) {
+-        return 'default name';
+-      }).then(function (userName) {
+-        // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
+-        // will be `'default name'`
+-      });
+-
+-      findUser().then(function (user) {
+-        throw new Error('Found user, but still unhappy');
+-      }, function (reason) {
+-        throw new Error('`findUser` rejected and we're unhappy');
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
+-        // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
+-      });
+-      ```
+-      If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        throw new PedagogicalException('Upstream error');
+-      }).then(function (value) {
+-        // never reached
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // The `PedgagocialException` is propagated all the way down to here
+-      });
+-      ```
+-
+-      Assimilation
+-      ------------
+-
+-      Sometimes the value you want to propagate to a downstream promise can only be
+-      retrieved asynchronously. This can be achieved by returning a promise in the
+-      fulfillment or rejection handler. The downstream promise will then be pending
+-      until the returned promise is settled. This is called *assimilation*.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // The user's comments are now available
+-      });
+-      ```
+-
+-      If the assimliated promise rejects, then the downstream promise will also reject.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // If `findCommentsByAuthor` fulfills, we'll have the value here
+-      }, function (reason) {
+-        // If `findCommentsByAuthor` rejects, we'll have the reason here
+-      });
+-      ```
+-
+-      Simple Example
+-      --------------
+-
+-      Synchronous Example
+-
+-      ```javascript
+-      var result;
+-
+-      try {
+-        result = findResult();
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
++function _resolve(promise, value) {
++  if (promise === value) {
++    _reject(promise, selfFulfillment());
++  } else if (objectOrFunction(value)) {
++    handleMaybeThenable(promise, value, getThen(value));
++  } else {
++    fulfill(promise, value);
++  }
++}
+ 
+-      Errback Example
++function publishRejection(promise) {
++  if (promise._onerror) {
++    promise._onerror(promise._result);
++  }
+ 
+-      ```js
+-      findResult(function(result, err){
+-        if (err) {
+-          // failure
+-        } else {
+-          // success
+-        }
+-      });
+-      ```
++  publish(promise);
++}
+ 
+-      Promise Example;
++function fulfill(promise, value) {
++  if (promise._state !== PENDING) {
++    return;
++  }
+ 
+-      ```javascript
+-      findResult().then(function(result){
+-        // success
+-      }, function(reason){
+-        // failure
+-      });
+-      ```
++  promise._result = value;
++  promise._state = FULFILLED;
+ 
+-      Advanced Example
+-      --------------
++  if (promise._subscribers.length !== 0) {
++    asap(publish, promise);
++  }
++}
+ 
+-      Synchronous Example
++function _reject(promise, reason) {
++  if (promise._state !== PENDING) {
++    return;
++  }
++  promise._state = REJECTED;
++  promise._result = reason;
+ 
+-      ```javascript
+-      var author, books;
++  asap(publishRejection, promise);
++}
+ 
+-      try {
+-        author = findAuthor();
+-        books  = findBooksByAuthor(author);
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
++function subscribe(parent, child, onFulfillment, onRejection) {
++  var _subscribers = parent._subscribers;
++  var length = _subscribers.length;
+ 
+-      Errback Example
++  parent._onerror = null;
+ 
+-      ```js
++  _subscribers[length] = child;
++  _subscribers[length + FULFILLED] = onFulfillment;
++  _subscribers[length + REJECTED] = onRejection;
+ 
+-      function foundBooks(books) {
++  if (length === 0 && parent._state) {
++    asap(publish, parent);
++  }
++}
+ 
+-      }
++function publish(promise) {
++  var subscribers = promise._subscribers;
++  var settled = promise._state;
+ 
+-      function failure(reason) {
++  if (subscribers.length === 0) {
++    return;
++  }
+ 
+-      }
++  var child = undefined,
++      callback = undefined,
++      detail = promise._result;
+ 
+-      findAuthor(function(author, err){
+-        if (err) {
+-          failure(err);
+-          // failure
+-        } else {
+-          try {
+-            findBoooksByAuthor(author, function(books, err) {
+-              if (err) {
+-                failure(err);
+-              } else {
+-                try {
+-                  foundBooks(books);
+-                } catch(reason) {
+-                  failure(reason);
+-                }
+-              }
+-            });
+-          } catch(error) {
+-            failure(err);
+-          }
+-          // success
+-        }
+-      });
+-      ```
++  for (var i = 0; i < subscribers.length; i += 3) {
++    child = subscribers[i];
++    callback = subscribers[i + settled];
+ 
+-      Promise Example;
++    if (child) {
++      invokeCallback(settled, child, callback, detail);
++    } else {
++      callback(detail);
++    }
++  }
+ 
+-      ```javascript
+-      findAuthor().
+-        then(findBooksByAuthor).
+-        then(function(books){
+-          // found books
+-      }).catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
++  promise._subscribers.length = 0;
++}
+ 
+-      @method then
+-      @param {Function} onFulfilled
+-      @param {Function} onRejected
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      then: lib$es6$promise$then$$default,
++function ErrorObject() {
++  this.error = null;
++}
+ 
+-    /**
+-      `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
+-      as the catch block of a try/catch statement.
++var TRY_CATCH_ERROR = new ErrorObject();
+ 
+-      ```js
+-      function findAuthor(){
+-        throw new Error('couldn't find that author');
+-      }
++function tryCatch(callback, detail) {
++  try {
++    return callback(detail);
++  } catch (e) {
++    TRY_CATCH_ERROR.error = e;
++    return TRY_CATCH_ERROR;
++  }
++}
+ 
+-      // synchronous
+-      try {
+-        findAuthor();
+-      } catch(reason) {
+-        // something went wrong
+-      }
++function invokeCallback(settled, promise, callback, detail) {
++  var hasCallback = isFunction(callback),
++      value = undefined,
++      error = undefined,
++      succeeded = undefined,
++      failed = undefined;
+ 
+-      // async with promises
+-      findAuthor().catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
+-
+-      @method catch
+-      @param {Function} onRejection
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      'catch': function(onRejection) {
+-        return this.then(null, onRejection);
+-      }
+-    };
+-    var lib$es6$promise$enumerator$$default = lib$es6$promise$enumerator$$Enumerator;
+-    function lib$es6$promise$enumerator$$Enumerator(Constructor, input) {
+-      this._instanceConstructor = Constructor;
+-      this.promise = new Constructor(lib$es6$promise$$internal$$noop);
++  if (hasCallback) {
++    value = tryCatch(callback, detail);
+ 
+-      if (Array.isArray(input)) {
+-        this._input     = input;
+-        this.length     = input.length;
+-        this._remaining = input.length;
++    if (value === TRY_CATCH_ERROR) {
++      failed = true;
++      error = value.error;
++      value = null;
++    } else {
++      succeeded = true;
++    }
+ 
+-        this._result = new Array(this.length);
++    if (promise === value) {
++      _reject(promise, cannotReturnOwn());
++      return;
++    }
++  } else {
++    value = detail;
++    succeeded = true;
++  }
+ 
+-        if (this.length === 0) {
+-          lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-        } else {
+-          this.length = this.length || 0;
+-          this._enumerate();
+-          if (this._remaining === 0) {
+-            lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-          }
+-        }
+-      } else {
+-        lib$es6$promise$$internal$$reject(this.promise, this._validationError());
+-      }
++  if (promise._state !== PENDING) {
++    // noop
++  } else if (hasCallback && succeeded) {
++      _resolve(promise, value);
++    } else if (failed) {
++      _reject(promise, error);
++    } else if (settled === FULFILLED) {
++      fulfill(promise, value);
++    } else if (settled === REJECTED) {
++      _reject(promise, value);
+     }
++}
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._validationError = function() {
+-      return new Error('Array Methods must be provided an Array');
+-    };
++function initializePromise(promise, resolver) {
++  try {
++    resolver(function resolvePromise(value) {
++      _resolve(promise, value);
++    }, function rejectPromise(reason) {
++      _reject(promise, reason);
++    });
++  } catch (e) {
++    _reject(promise, e);
++  }
++}
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._enumerate = function() {
+-      var length  = this.length;
+-      var input   = this._input;
++var id = 0;
++function nextId() {
++  return id++;
++}
+ 
+-      for (var i = 0; this._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        this._eachEntry(input[i], i);
+-      }
+-    };
++function makePromise(promise) {
++  promise[PROMISE_ID] = id++;
++  promise._state = undefined;
++  promise._result = undefined;
++  promise._subscribers = [];
++}
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._eachEntry = function(entry, i) {
+-      var c = this._instanceConstructor;
+-      var resolve = c.resolve;
+-
+-      if (resolve === lib$es6$promise$promise$resolve$$default) {
+-        var then = lib$es6$promise$$internal$$getThen(entry);
+-
+-        if (then === lib$es6$promise$then$$default &&
+-            entry._state !== lib$es6$promise$$internal$$PENDING) {
+-          this._settledAt(entry._state, i, entry._result);
+-        } else if (typeof then !== 'function') {
+-          this._remaining--;
+-          this._result[i] = entry;
+-        } else if (c === lib$es6$promise$promise$$default) {
+-          var promise = new c(lib$es6$promise$$internal$$noop);
+-          lib$es6$promise$$internal$$handleMaybeThenable(promise, entry, then);
+-          this._willSettleAt(promise, i);
+-        } else {
+-          this._willSettleAt(new c(function(resolve) { resolve(entry); }), i);
+-        }
+-      } else {
+-        this._willSettleAt(resolve(entry), i);
+-      }
+-    };
++function Enumerator(Constructor, input) {
++  this._instanceConstructor = Constructor;
++  this.promise = new Constructor(noop);
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._settledAt = function(state, i, value) {
+-      var promise = this.promise;
++  if (!this.promise[PROMISE_ID]) {
++    makePromise(this.promise);
++  }
+ 
+-      if (promise._state === lib$es6$promise$$internal$$PENDING) {
+-        this._remaining--;
++  if (isArray(input)) {
++    this._input = input;
++    this.length = input.length;
++    this._remaining = input.length;
+ 
+-        if (state === lib$es6$promise$$internal$$REJECTED) {
+-          lib$es6$promise$$internal$$reject(promise, value);
+-        } else {
+-          this._result[i] = value;
+-        }
+-      }
++    this._result = new Array(this.length);
+ 
++    if (this.length === 0) {
++      fulfill(this.promise, this._result);
++    } else {
++      this.length = this.length || 0;
++      this._enumerate();
+       if (this._remaining === 0) {
+-        lib$es6$promise$$internal$$fulfill(promise, this._result);
++        fulfill(this.promise, this._result);
+       }
+-    };
++    }
++  } else {
++    _reject(this.promise, validationError());
++  }
++}
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._willSettleAt = function(promise, i) {
+-      var enumerator = this;
++function validationError() {
++  return new Error('Array Methods must be provided an Array');
++};
+ 
+-      lib$es6$promise$$internal$$subscribe(promise, undefined, function(value) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$FULFILLED, i, value);
+-      }, function(reason) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$REJECTED, i, reason);
+-      });
+-    };
+-    function lib$es6$promise$polyfill$$polyfill() {
+-      var local;
++Enumerator.prototype._enumerate = function () {
++  var length = this.length;
++  var _input = this._input;
+ 
+-      if (typeof global !== 'undefined') {
+-          local = global;
+-      } else if (typeof self !== 'undefined') {
+-          local = self;
+-      } else {
+-          try {
+-              local = Function('return this')();
+-          } catch (e) {
+-              throw new Error('polyfill failed because global object is unavailable in this environment');
+-          }
+-      }
++  for (var i = 0; this._state === PENDING && i < length; i++) {
++    this._eachEntry(_input[i], i);
++  }
++};
+ 
+-      var P = local.Promise;
++Enumerator.prototype._eachEntry = function (entry, i) {
++  var c = this._instanceConstructor;
++  var resolve$$ = c.resolve;
+ 
+-      if (P && Object.prototype.toString.call(P.resolve()) === '[object Promise]' && !P.cast) {
+-        return;
+-      }
++  if (resolve$$ === resolve) {
++    var _then = getThen(entry);
+ 
+-      local.Promise = lib$es6$promise$promise$$default;
++    if (_then === then && entry._state !== PENDING) {
++      this._settledAt(entry._state, i, entry._result);
++    } else if (typeof _then !== 'function') {
++      this._remaining--;
++      this._result[i] = entry;
++    } else if (c === Promise) {
++      var promise = new c(noop);
++      handleMaybeThenable(promise, entry, _then);
++      this._willSettleAt(promise, i);
++    } else {
++      this._willSettleAt(new c(function (resolve$$) {
++        return resolve$$(entry);
++      }), i);
+     }
+-    var lib$es6$promise$polyfill$$default = lib$es6$promise$polyfill$$polyfill;
++  } else {
++    this._willSettleAt(resolve$$(entry), i);
++  }
++};
+ 
+-    var lib$es6$promise$umd$$ES6Promise = {
+-      'Promise': lib$es6$promise$promise$$default,
+-      'polyfill': lib$es6$promise$polyfill$$default
+-    };
++Enumerator.prototype._settledAt = function (state, i, value) {
++  var promise = this.promise;
+ 
+-    /* global define:true module:true window: true */
+-    if (typeof define === 'function' && define['amd']) {
+-      define(function() { return lib$es6$promise$umd$$ES6Promise; });
+-    } else if (typeof module !== 'undefined' && module['exports']) {
+-      module['exports'] = lib$es6$promise$umd$$ES6Promise;
+-    } else if (typeof this !== 'undefined') {
+-      this['ES6Promise'] = lib$es6$promise$umd$$ES6Promise;
+-    }
++  if (promise._state === PENDING) {
++    this._remaining--;
+ 
+-    lib$es6$promise$polyfill$$default();
+-}).call(this);
++    if (state === REJECTED) {
++      _reject(promise, value);
++    } else {
++      this._result[i] = value;
++    }
++  }
+ 
++  if (this._remaining === 0) {
++    fulfill(promise, this._result);
++  }
++};
+ 
+-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"_process":15}],65:[function(require,module,exports){
+-/**
+- * inspired by is-number <https://github.com/jonschlinkert/is-number>
+- * but significantly simplified and sped up by ignoring number and string constructors
+- * ie these return false:
+- *   new Number(1)
+- *   new String('1')
+- */
++Enumerator.prototype._willSettleAt = function (promise, i) {
++  var enumerator = this;
+ 
+-'use strict';
++  subscribe(promise, undefined, function (value) {
++    return enumerator._settledAt(FULFILLED, i, value);
++  }, function (reason) {
++    return enumerator._settledAt(REJECTED, i, reason);
++  });
++};
+ 
+ /**
+- * Is this string all whitespace?
+- * This solution kind of makes my brain hurt, but it's significantly faster
+- * than !str.trim() or any other solution I could find.
+- *
+- * whitespace codes from: http://en.wikipedia.org/wiki/Whitespace_character
+- * and verified with:
+- *
+- *  for(var i = 0; i < 65536; i++) {
+- *      var s = String.fromCharCode(i);
+- *      if(+s===0 && !s.trim()) console.log(i, s);
+- *  }
+- *
+- * which counts a couple of these as *not* whitespace, but finds nothing else
+- * that *is* whitespace. Note that charCodeAt stops at 16 bits, but it appears
+- * that there are no whitespace characters above this, and code points above
+- * this do not map onto white space characters.
+- */
+-function allBlankCharCodes(str){
+-    var l = str.length,
+-        a;
+-    for(var i = 0; i < l; i++) {
+-        a = str.charCodeAt(i);
+-        if((a < 9 || a > 13) && (a !== 32) && (a !== 133) && (a !== 160) &&
+-            (a !== 5760) && (a !== 6158) && (a < 8192 || a > 8205) &&
+-            (a !== 8232) && (a !== 8233) && (a !== 8239) && (a !== 8287) &&
+-            (a !== 8288) && (a !== 12288) && (a !== 65279)) {
+-                return false;
+-        }
+-    }
+-    return true;
+-}
++  `Promise.all` accepts an array of promises, and returns a new promise which
++  is fulfilled with an array of fulfillment values for the passed promises, or
++  rejected with the reason of the first passed promise to be rejected. It casts all
++  elements of the passed iterable to promises as it runs this algorithm.
+ 
+-module.exports = function(n) {
+-    var type = typeof n;
+-    if(type === 'string') {
+-        var original = n;
+-        n = +n;
+-        // whitespace strings cast to zero - filter them out
+-        if(n===0 && allBlankCharCodes(original)) return false;
+-    }
+-    else if(type !== 'number') return false;
++  Example:
+ 
+-    return n - n < 1;
+-};
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = resolve(2);
++  let promise3 = resolve(3);
++  let promises = [ promise1, promise2, promise3 ];
+ 
+-},{}],66:[function(require,module,exports){
+-"use strict"
++  Promise.all(promises).then(function(array){
++    // The array here would be [ 1, 2, 3 ];
++  });
++  ```
+ 
+-var pool = require("typedarray-pool")
+-var ops = require("ndarray-ops")
+-var ndarray = require("ndarray")
++  If any of the `promises` given to `all` are rejected, the first promise
++  that is rejected will be given as an argument to the returned promises's
++  rejection handler. For example:
+ 
+-var SUPPORTED_TYPES = [
+-  "uint8",
+-  "uint8_clamped",
+-  "uint16",
+-  "uint32",
+-  "int8",
+-  "int16",
+-  "int32",
+-  "float32" ]
++  Example:
+ 
+-function GLBuffer(gl, type, handle, length, usage) {
+-  this.gl = gl
+-  this.type = type
+-  this.handle = handle
+-  this.length = length
+-  this.usage = usage
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = reject(new Error("2"));
++  let promise3 = reject(new Error("3"));
++  let promises = [ promise1, promise2, promise3 ];
++
++  Promise.all(promises).then(function(array){
++    // Code here never runs because there are rejected promises!
++  }, function(error) {
++    // error.message === "2"
++  });
++  ```
++
++  @method all
++  @static
++  @param {Array} entries array of promises
++  @param {String} label optional string for labeling the promise.
++  Useful for tooling.
++  @return {Promise} promise that is fulfilled when all `promises` have been
++  fulfilled, or rejected if any of them become rejected.
++  @static
++*/
++function all(entries) {
++  return new Enumerator(this, entries).promise;
+ }
+ 
+-var proto = GLBuffer.prototype
++/**
++  `Promise.race` returns a new promise which is settled in the same way as the
++  first passed promise to settle.
+ 
+-proto.bind = function() {
+-  this.gl.bindBuffer(this.type, this.handle)
+-}
++  Example:
+ 
+-proto.unbind = function() {
+-  this.gl.bindBuffer(this.type, null)
+-}
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-proto.dispose = function() {
+-  this.gl.deleteBuffer(this.handle)
+-}
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 2');
++    }, 100);
++  });
+ 
+-function updateTypeArray(gl, type, len, usage, data, offset) {
+-  var dataLen = data.length * data.BYTES_PER_ELEMENT
+-  if(offset < 0) {
+-    gl.bufferData(type, data, usage)
+-    return dataLen
+-  }
+-  if(dataLen + offset > len) {
+-    throw new Error("gl-buffer: If resizing buffer, must not specify offset")
+-  }
+-  gl.bufferSubData(type, offset, data)
+-  return len
+-}
++  Promise.race([promise1, promise2]).then(function(result){
++    // result === 'promise 2' because it was resolved before promise1
++    // was resolved.
++  });
++  ```
++
++  `Promise.race` is deterministic in that only the state of the first
++  settled promise matters. For example, even if other promises given to the
++  `promises` array argument are resolved, but the first settled promise has
++  become rejected before the other promises became fulfilled, the returned
++  promise will become rejected:
++
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-function makeScratchTypeArray(array, dtype) {
+-  var res = pool.malloc(array.length, dtype)
+-  var n = array.length
+-  for(var i=0; i<n; ++i) {
+-    res[i] = array[i]
+-  }
+-  return res
+-}
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      reject(new Error('promise 2'));
++    }, 100);
++  });
+ 
+-function isPacked(shape, stride) {
+-  var n = 1
+-  for(var i=stride.length-1; i>=0; --i) {
+-    if(stride[i] !== n) {
+-      return false
+-    }
+-    n *= shape[i]
+-  }
+-  return true
+-}
++  Promise.race([promise1, promise2]).then(function(result){
++    // Code here never runs
++  }, function(reason){
++    // reason.message === 'promise 2' because promise 2 became rejected before
++    // promise 1 became fulfilled
++  });
++  ```
+ 
+-proto.update = function(array, offset) {
+-  if(typeof offset !== "number") {
+-    offset = -1
+-  }
+-  this.bind()
+-  if(typeof array === "object" && typeof array.shape !== "undefined") { //ndarray
+-    var dtype = array.dtype
+-    if(SUPPORTED_TYPES.indexOf(dtype) < 0) {
+-      dtype = "float32"
+-    }
+-    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
+-      var ext = gl.getExtension('OES_element_index_uint')
+-      if(ext && dtype !== "uint16") {
+-        dtype = "uint32"
+-      } else {
+-        dtype = "uint16"
+-      }
+-    }
+-    if(dtype === array.dtype && isPacked(array.shape, array.stride)) {
+-      if(array.offset === 0 && array.data.length === array.shape[0]) {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data, offset)
+-      } else {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data.subarray(array.offset, array.shape[0]), offset)
+-      }
+-    } else {
+-      var tmp = pool.malloc(array.size, dtype)
+-      var ndt = ndarray(tmp, array.shape)
+-      ops.assign(ndt, array)
+-      if(offset < 0) {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp, offset)
+-      } else {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp.subarray(0, array.size), offset)
++  An example real-world use case is implementing timeouts:
++
++  ```javascript
++  Promise.race([ajax('foo.json'), timeout(5000)])
++  ```
++
++  @method race
++  @static
++  @param {Array} promises array of promises to observe
++  Useful for tooling.
++  @return {Promise} a promise which settles in the same way as the first passed
++  promise to settle.
++*/
++function race(entries) {
++  /*jshint validthis:true */
++  var Constructor = this;
++
++  if (!isArray(entries)) {
++    return new Constructor(function (_, reject) {
++      return reject(new TypeError('You must pass an array to race.'));
++    });
++  } else {
++    return new Constructor(function (resolve, reject) {
++      var length = entries.length;
++      for (var i = 0; i < length; i++) {
++        Constructor.resolve(entries[i]).then(resolve, reject);
+       }
+-      pool.free(tmp)
+-    }
+-  } else if(Array.isArray(array)) { //Vanilla array
+-    var t
+-    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
+-      t = makeScratchTypeArray(array, "uint16")
+-    } else {
+-      t = makeScratchTypeArray(array, "float32")
+-    }
+-    if(offset < 0) {
+-      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t, offset)
+-    } else {
+-      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t.subarray(0, array.length), offset)
+-    }
+-    pool.free(t)
+-  } else if(typeof array === "object" && typeof array.length === "number") { //Typed array
+-    this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array, offset)
+-  } else if(typeof array === "number" || array === undefined) { //Number/default
+-    if(offset >= 0) {
+-      throw new Error("gl-buffer: Cannot specify offset when resizing buffer")
+-    }
+-    array = array | 0
+-    if(array <= 0) {
+-      array = 1
+-    }
+-    this.gl.bufferData(this.type, array|0, this.usage)
+-    this.length = array
+-  } else { //Error, case should not happen
+-    throw new Error("gl-buffer: Invalid data type")
++    });
+   }
+ }
+ 
+-function createBuffer(gl, data, type, usage) {
+-  type = type || gl.ARRAY_BUFFER
+-  usage = usage || gl.DYNAMIC_DRAW
+-  if(type !== gl.ARRAY_BUFFER && type !== gl.ELEMENT_ARRAY_BUFFER) {
+-    throw new Error("gl-buffer: Invalid type for webgl buffer, must be either gl.ARRAY_BUFFER or gl.ELEMENT_ARRAY_BUFFER")
+-  }
+-  if(usage !== gl.DYNAMIC_DRAW && usage !== gl.STATIC_DRAW && usage !== gl.STREAM_DRAW) {
+-    throw new Error("gl-buffer: Invalid usage for buffer, must be either gl.DYNAMIC_DRAW, gl.STATIC_DRAW or gl.STREAM_DRAW")
+-  }
+-  var handle = gl.createBuffer()
+-  var result = new GLBuffer(gl, type, handle, 0, usage)
+-  result.update(data)
+-  return result
+-}
++/**
++  `Promise.reject` returns a promise rejected with the passed `reason`.
++  It is shorthand for the following:
+ 
+-module.exports = createBuffer
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    reject(new Error('WHOOPS'));
++  });
+ 
+-},{"ndarray":131,"ndarray-ops":130,"typedarray-pool":151}],67:[function(require,module,exports){
+-'use strict'
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-module.exports = createContour2D
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-var iota = require('iota-array')
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var ndarray = require('ndarray')
+-var surfaceNets = require('surface-nets')
+-var cdt2d = require('cdt2d')
+-var cleanPSLG = require('clean-pslg')
+-var bsearch = require('binary-search-bounds')
++  ```javascript
++  let promise = Promise.reject(new Error('WHOOPS'));
+ 
+-var shaders = require('./lib/shaders')
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-function GLContour2D (
+-  plot,
+-  shader,
+-  fillShader,
+-  pickShader,
+-  positionBuffer,
+-  colorBuffer,
+-  idBuffer,
+-  fillPositionBuffer,
+-  fillColorBuffer) {
+-  this.plot = plot
+-  this.shader = shader
+-  this.fillShader = fillShader
+-  this.pickShader = pickShader
+-  this.positionBuffer = positionBuffer
+-  this.colorBuffer = colorBuffer
+-  this.idBuffer = idBuffer
+-  this.fillPositionBuffer = fillPositionBuffer
+-  this.fillColorBuffer = fillColorBuffer
+-  this.fillVerts = 0
+-  this.xData = []
+-  this.yData = []
+-  this.shape = [0, 0]
+-  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
+-  this.pickOffset = 0
+-  this.numVertices = 0
+-  this.lineWidth = 1
++  @method reject
++  @static
++  @param {Any} reason value that the returned promise will be rejected with.
++  Useful for tooling.
++  @return {Promise} a promise rejected with the given `reason`.
++*/
++function reject(reason) {
++  /*jshint validthis:true */
++  var Constructor = this;
++  var promise = new Constructor(noop);
++  _reject(promise, reason);
++  return promise;
+ }
+ 
+-var proto = GLContour2D.prototype
++function needsResolver() {
++  throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++}
+ 
+-var WEIGHTS = [
+-  1, 0,
+-  0, 0,
+-  0, 1,
+-  1, 0,
+-  1, 1,
+-  0, 1
+-]
++function needsNew() {
++  throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++}
+ 
+-proto.draw = (function () {
+-  var MATRIX = [
+-    1, 0, 0,
+-    0, 1, 0,
+-    0, 0, 1
+-  ]
++/**
++  Promise objects represent the eventual result of an asynchronous operation. The
++  primary way of interacting with a promise is through its `then` method, which
++  registers callbacks to receive either a promise's eventual value or the reason
++  why the promise cannot be fulfilled.
+ 
+-  var SCREEN_SHAPE = [0, 0]
++  Terminology
++  -----------
+ 
+-  return function () {
+-    var plot = this.plot
+-    var shader = this.shader
+-    var fillShader = this.fillShader
+-    var bounds = this.bounds
+-    var numVertices = this.numVertices
+-    var fillVerts = this.fillVerts
++  - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
++  - `thenable` is an object or function that defines a `then` method.
++  - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
++  - `exception` is a value that is thrown using the throw statement.
++  - `reason` is a value that indicates why a promise was rejected.
++  - `settled` the final resting state of a promise, fulfilled or rejected.
+ 
+-    var uniforms, attributes
++  A promise can be in one of three states: pending, fulfilled, or rejected.
+ 
+-    var gl = plot.gl
+-    var viewBox = plot.viewBox
+-    var dataBox = plot.dataBox
++  Promises that are fulfilled have a fulfillment value and are in the fulfilled
++  state.  Promises that are rejected have a rejection reason and are in the
++  rejected state.  A fulfillment value is never a thenable.
+ 
+-    var boundX = bounds[2] - bounds[0]
+-    var boundY = bounds[3] - bounds[1]
+-    var dataX = dataBox[2] - dataBox[0]
+-    var dataY = dataBox[3] - dataBox[1]
++  Promises can also be said to *resolve* a value.  If this value is also a
++  promise, then the original promise's settled state will match the value's
++  settled state.  So a promise that *resolves* a promise that rejects will
++  itself reject, and a promise that *resolves* a promise that fulfills will
++  itself fulfill.
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-    SCREEN_SHAPE[0] = viewBox[2] - viewBox[0]
+-    SCREEN_SHAPE[1] = viewBox[3] - viewBox[1]
++  Basic Usage:
++  ------------
+ 
+-    if (fillVerts > 0) {
+-      fillShader.bind()
++  ```js
++  let promise = new Promise(function(resolve, reject) {
++    // on success
++    resolve(value);
+ 
+-      uniforms = fillShader.uniforms
+-      uniforms.viewTransform = MATRIX
+-      uniforms.screenShape = SCREEN_SHAPE
++    // on failure
++    reject(reason);
++  });
+ 
+-      attributes = shader.attributes
+-      this.fillPositionBuffer.bind()
+-      attributes.position.pointer()
++  promise.then(function(value) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
+ 
+-      this.fillColorBuffer.bind()
+-      attributes.color.pointer(gl.UNSIGNED_BYTE, true)
++  Advanced Usage:
++  ---------------
+ 
+-      gl.drawArrays(gl.TRIANGLES, 0, fillVerts)
+-    }
++  Promises shine when abstracting away asynchronous interactions such as
++  `XMLHttpRequest`s.
+ 
+-    if (numVertices > 0) {
+-      shader.bind()
++  ```js
++  function getJSON(url) {
++    return new Promise(function(resolve, reject){
++      let xhr = new XMLHttpRequest();
+ 
+-      var lineWidth = this.lineWidth * plot.pixelRatio
++      xhr.open('GET', url);
++      xhr.onreadystatechange = handler;
++      xhr.responseType = 'json';
++      xhr.setRequestHeader('Accept', 'application/json');
++      xhr.send();
+ 
+-      uniforms = shader.uniforms
+-      uniforms.viewTransform = MATRIX
+-      uniforms.screenShape = SCREEN_SHAPE
+-      uniforms.lineWidth = lineWidth
+-      uniforms.pointSize = 1000
++      function handler() {
++        if (this.readyState === this.DONE) {
++          if (this.status === 200) {
++            resolve(this.response);
++          } else {
++            reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
++          }
++        }
++      };
++    });
++  }
+ 
+-      attributes = shader.attributes
++  getJSON('/posts.json').then(function(json) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
+ 
+-      // Draw lines
+-      this.positionBuffer.bind()
+-      attributes.position.pointer(gl.FLOAT, false, 16, 0)
+-      attributes.tangent.pointer(gl.FLOAT, false, 16, 8)
++  Unlike callbacks, promises are great composable primitives.
+ 
+-      this.colorBuffer.bind()
+-      attributes.color.pointer(gl.UNSIGNED_BYTE, true)
++  ```js
++  Promise.all([
++    getJSON('/posts'),
++    getJSON('/comments')
++  ]).then(function(values){
++    values[0] // => postsJSON
++    values[1] // => commentsJSON
+ 
+-      gl.drawArrays(gl.TRIANGLES, 0, numVertices)
++    return values;
++  });
++  ```
+ 
+-      // Draw end caps
+-      uniforms.lineWidth = 0
+-      uniforms.pointSize = lineWidth
++  @class Promise
++  @param {function} resolver
++  Useful for tooling.
++  @constructor
++*/
++function Promise(resolver) {
++  this[PROMISE_ID] = nextId();
++  this._result = this._state = undefined;
++  this._subscribers = [];
+ 
+-      this.positionBuffer.bind()
+-      attributes.position.pointer(gl.FLOAT, false, 16 * 3, 0)
+-      attributes.tangent.pointer(gl.FLOAT, false, 16 * 3, 8)
++  if (noop !== resolver) {
++    typeof resolver !== 'function' && needsResolver();
++    this instanceof Promise ? initializePromise(this, resolver) : needsNew();
++  }
++}
++
++Promise.all = all;
++Promise.race = race;
++Promise.resolve = resolve;
++Promise.reject = reject;
++Promise._setScheduler = setScheduler;
++Promise._setAsap = setAsap;
++Promise._asap = asap;
++
++Promise.prototype = {
++  constructor: Promise,
++
++  /**
++    The primary way of interacting with a promise is through its `then` method,
++    which registers callbacks to receive either a promise's eventual value or the
++    reason why the promise cannot be fulfilled.
++  
++    ```js
++    findUser().then(function(user){
++      // user is available
++    }, function(reason){
++      // user is unavailable, and you are given the reason why
++    });
++    ```
++  
++    Chaining
++    --------
++  
++    The return value of `then` is itself a promise.  This second, 'downstream'
++    promise is resolved with the return value of the first promise's fulfillment
++    or rejection handler, or rejected if the handler throws an exception.
++  
++    ```js
++    findUser().then(function (user) {
++      return user.name;
++    }, function (reason) {
++      return 'default name';
++    }).then(function (userName) {
++      // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
++      // will be `'default name'`
++    });
++  
++    findUser().then(function (user) {
++      throw new Error('Found user, but still unhappy');
++    }, function (reason) {
++      throw new Error('`findUser` rejected and we're unhappy');
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
++      // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
++    });
++    ```
++    If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
++  
++    ```js
++    findUser().then(function (user) {
++      throw new PedagogicalException('Upstream error');
++    }).then(function (value) {
++      // never reached
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // The `PedgagocialException` is propagated all the way down to here
++    });
++    ```
++  
++    Assimilation
++    ------------
++  
++    Sometimes the value you want to propagate to a downstream promise can only be
++    retrieved asynchronously. This can be achieved by returning a promise in the
++    fulfillment or rejection handler. The downstream promise will then be pending
++    until the returned promise is settled. This is called *assimilation*.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // The user's comments are now available
++    });
++    ```
++  
++    If the assimliated promise rejects, then the downstream promise will also reject.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // If `findCommentsByAuthor` fulfills, we'll have the value here
++    }, function (reason) {
++      // If `findCommentsByAuthor` rejects, we'll have the reason here
++    });
++    ```
++  
++    Simple Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let result;
++  
++    try {
++      result = findResult();
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++    findResult(function(result, err){
++      if (err) {
++        // failure
++      } else {
++        // success
++      }
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findResult().then(function(result){
++      // success
++    }, function(reason){
++      // failure
++    });
++    ```
++  
++    Advanced Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let author, books;
++  
++    try {
++      author = findAuthor();
++      books  = findBooksByAuthor(author);
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++  
++    function foundBooks(books) {
++  
++    }
++  
++    function failure(reason) {
++  
++    }
++  
++    findAuthor(function(author, err){
++      if (err) {
++        failure(err);
++        // failure
++      } else {
++        try {
++          findBoooksByAuthor(author, function(books, err) {
++            if (err) {
++              failure(err);
++            } else {
++              try {
++                foundBooks(books);
++              } catch(reason) {
++                failure(reason);
++              }
++            }
++          });
++        } catch(error) {
++          failure(err);
++        }
++        // success
++      }
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findAuthor().
++      then(findBooksByAuthor).
++      then(function(books){
++        // found books
++    }).catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method then
++    @param {Function} onFulfilled
++    @param {Function} onRejected
++    Useful for tooling.
++    @return {Promise}
++  */
++  then: then,
++
++  /**
++    `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
++    as the catch block of a try/catch statement.
++  
++    ```js
++    function findAuthor(){
++      throw new Error('couldn't find that author');
++    }
++  
++    // synchronous
++    try {
++      findAuthor();
++    } catch(reason) {
++      // something went wrong
++    }
++  
++    // async with promises
++    findAuthor().catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method catch
++    @param {Function} onRejection
++    Useful for tooling.
++    @return {Promise}
++  */
++  'catch': function _catch(onRejection) {
++    return this.then(null, onRejection);
++  }
++};
+ 
+-      this.colorBuffer.bind()
+-      attributes.color.pointer(gl.UNSIGNED_BYTE, true, 4 * 3, 0)
++function polyfill() {
++    var local = undefined;
+ 
+-      gl.drawArrays(gl.POINTS, 0, numVertices / 3)
++    if (typeof global !== 'undefined') {
++        local = global;
++    } else if (typeof self !== 'undefined') {
++        local = self;
++    } else {
++        try {
++            local = Function('return this')();
++        } catch (e) {
++            throw new Error('polyfill failed because global object is unavailable in this environment');
++        }
+     }
+-  }
+-})()
+ 
+-proto.drawPick = (function () {
+-  return function (pickOffset) {
+-    return pickOffset
+-  }
+-})()
++    var P = local.Promise;
+ 
+-proto.pick = function (x, y, value) {
+-  return null
+-}
++    if (P) {
++        var promiseToString = null;
++        try {
++            promiseToString = Object.prototype.toString.call(P.resolve());
++        } catch (e) {
++            // silently ignored
++        }
+ 
+-function interpolate (array, point) {
+-  var idx = Math.floor(point)
+-  if (idx < 0) {
+-    return array[0]
+-  } else if (idx >= array.length - 1) {
+-    return array[array.length - 1]
+-  }
+-  var t = point - idx
+-  return (1.0 - t) * array[idx] + t * array[idx + 1]
+-}
++        if (promiseToString === '[object Promise]' && !P.cast) {
++            return;
++        }
++    }
+ 
+-proto.update = function (options) {
+-  options = options || {}
++    local.Promise = Promise;
++}
+ 
+-  var shape = options.shape || [0, 0]
++polyfill();
++// Strange compat..
++Promise.polyfill = polyfill;
++Promise.Promise = Promise;
+ 
+-  var x = options.x || iota(shape[0])
+-  var y = options.y || iota(shape[1])
+-  var z = options.z || new Float32Array(shape[0] * shape[1])
++return Promise;
+ 
+-  var levels = options.levels || []
+-  var levelColors = options.levelColors || []
++})));
+ 
+-  var bounds = this.bounds
+-  var lox = bounds[0] = x[0]
+-  var loy = bounds[1] = y[0]
+-  var hix = bounds[2] = x[x.length - 1]
+-  var hiy = bounds[3] = y[y.length - 1]
++}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"_process":133}],59:[function(require,module,exports){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-  if (lox === hix) {
+-    bounds[2] += 1
+-    hix += 1
+-  }
+-  if (loy === hiy) {
+-    bounds[3] += 1
+-    hiy += 1
+-  }
++function EventEmitter() {
++  this._events = this._events || {};
++  this._maxListeners = this._maxListeners || undefined;
++}
++module.exports = EventEmitter;
+ 
+-  var xs = 1.0 / (hix - lox)
+-  var ys = 1.0 / (hiy - loy)
++// Backwards-compat with node 0.10.x
++EventEmitter.EventEmitter = EventEmitter;
+ 
+-  this.xData = x
+-  this.yData = y
++EventEmitter.prototype._events = undefined;
++EventEmitter.prototype._maxListeners = undefined;
+ 
+-  this.lineWidth = options.lineWidth || 1
++// By default EventEmitters will print a warning if more than 10 listeners are
++// added to it. This is a useful default which helps finding memory leaks.
++EventEmitter.defaultMaxListeners = 10;
+ 
+-  var zarray = ndarray(z, shape)
++// Obviously not all Emitters should be limited to 10. This function allows
++// that to be increased. Set to zero for unlimited.
++EventEmitter.prototype.setMaxListeners = function(n) {
++  if (!isNumber(n) || n < 0 || isNaN(n))
++    throw TypeError('n must be a positive number');
++  this._maxListeners = n;
++  return this;
++};
+ 
+-  var positions = []
+-  var colors = []
+-  var ids = []
++EventEmitter.prototype.emit = function(type) {
++  var er, handler, len, args, i, listeners;
+ 
+-  var fillCells = []
+-  var fillPositions = [
+-    [0, 0],
+-    [shape[0] - 1, 0],
+-    [0, shape[1] - 1],
+-    [shape[0] - 1, shape[1] - 1]
+-  ]
++  if (!this._events)
++    this._events = {};
+ 
+-  function intersect (level, x, a, b) {
+-    var d = (b - a)
+-    if (Math.abs(d) < 1e-6) {
+-      return x
++  // If there is no 'error' event listener then throw.
++  if (type === 'error') {
++    if (!this._events.error ||
++        (isObject(this._events.error) && !this._events.error.length)) {
++      er = arguments[1];
++      if (er instanceof Error) {
++        throw er; // Unhandled 'error' event
++      } else {
++        // At least give some kind of context to the user
++        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
++        err.context = er;
++        throw err;
++      }
+     }
+-    return Math.floor(x) + Math.max(0.001, Math.min(0.999, (level - a) / d))
+   }
+ 
+-  for (var i = 0; i < levels.length; ++i) {
+-    var level = levels[i]
+-    if (i > 0 && level === levels[i - 1]) {
+-      continue
+-    }
+-    var contour = surfaceNets(zarray, level)
+-
+-    var c_r = (255 * levelColors[4 * i]) | 0
+-    var c_g = (255 * levelColors[4 * i + 1]) | 0
+-    var c_b = (255 * levelColors[4 * i + 2]) | 0
+-    var c_a = (255 * levelColors[4 * i + 3]) | 0
+-
+-    var c_cells = contour.cells
+-    var c_positions = contour.positions
++  handler = this._events[type];
+ 
+-    // Fix boundaries
+-    var in_degree = Array(c_positions.length)
+-    for (var j = 0; j < in_degree.length; ++j) {
+-      in_degree[j] = 0
+-    }
+-    for (j = 0; j < c_cells.length; ++j) {
+-      var edge = c_cells[j]
+-      in_degree[edge[0]] += 1
+-      in_degree[edge[1]] += 1
+-    }
++  if (isUndefined(handler))
++    return false;
+ 
+-    for (j = 0; j < in_degree.length; ++j) {
+-      var deg = in_degree[j]
+-      if (deg === 0) {
+-        continue
+-      }
+-      var pp = c_positions[j]
+-      in_degree[j] = fillPositions.length
+-      fillPositions.push(pp)
+-      if (deg > 1) {
+-        continue
+-      }
+-      var ppx = pp[0]
+-      var ppy = pp[1]
+-      var z00 = zarray.get(Math.floor(ppx), Math.floor(ppy))
+-      var z01 = zarray.get(Math.floor(ppx), Math.ceil(ppy))
+-      var z10 = zarray.get(Math.ceil(ppx), Math.floor(ppy))
+-      var z11 = zarray.get(Math.ceil(ppx), Math.ceil(ppy))
+-      var intercept
+-      if (Math.floor(pp[0]) === 0 &&
+-          ((z00 <= level) !== (z01 < level))) {
+-        intercept = [0, intersect(level, pp[1], z00, z01)]
+-      } else if (Math.ceil(pp[0]) === shape[0] - 1 &&
+-          ((z10 <= level) !== (z11 < level))) {
+-        intercept = [shape[0] - 1, intersect(level, pp[1], z10, z11)]
+-      } else if (Math.floor(pp[1]) === 0 &&
+-          ((z00 <= level) !== (z10 < level))) {
+-        intercept = [intersect(level, pp[0], z00, z10), 0]
+-      } else if (Math.ceil(pp[1]) === shape[1] - 1 &&
+-          ((z01 <= level) !== (z11 < level))) {
+-        intercept = [intersect(level, pp[0], z01, z11), shape[1] - 1]
+-      }
+-      if (intercept) {
+-        c_cells.push([j, c_positions.length])
+-        in_degree.push(fillPositions.length)
+-        c_positions.push(intercept)
+-      }
++  if (isFunction(handler)) {
++    switch (arguments.length) {
++      // fast cases
++      case 1:
++        handler.call(this);
++        break;
++      case 2:
++        handler.call(this, arguments[1]);
++        break;
++      case 3:
++        handler.call(this, arguments[1], arguments[2]);
++        break;
++      // slower
++      default:
++        args = Array.prototype.slice.call(arguments, 1);
++        handler.apply(this, args);
+     }
++  } else if (isObject(handler)) {
++    args = Array.prototype.slice.call(arguments, 1);
++    listeners = handler.slice();
++    len = listeners.length;
++    for (i = 0; i < len; i++)
++      listeners[i].apply(this, args);
++  }
+ 
+-    for (j = 0; j < c_cells.length; ++j) {
+-      var e = c_cells[j]
+-      var a = c_positions[e[0]]
+-      var b = c_positions[e[1]]
++  return true;
++};
+ 
+-      fillCells.push([in_degree[e[0]], in_degree[e[1]]])
++EventEmitter.prototype.addListener = function(type, listener) {
++  var m;
+ 
+-      var pointId = Math.round(a[0]) + shape[0] * Math.round(a[1])
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-      var ax = interpolate(x, a[0])
+-      var ay = interpolate(y, a[1])
+-      var bx = interpolate(x, b[0])
+-      var by = interpolate(y, b[1])
++  if (!this._events)
++    this._events = {};
+ 
+-      ax = xs * (ax - lox)
+-      ay = ys * (ay - loy)
+-      bx = xs * (bx - lox)
+-      by = ys * (by - loy)
++  // To avoid recursion in the case that type === "newListener"! Before
++  // adding it to the listeners, first emit "newListener".
++  if (this._events.newListener)
++    this.emit('newListener', type,
++              isFunction(listener.listener) ?
++              listener.listener : listener);
+ 
+-      var dx = ax - bx
+-      var dy = ay - by
++  if (!this._events[type])
++    // Optimize the case of one listener. Don't need the extra array object.
++    this._events[type] = listener;
++  else if (isObject(this._events[type]))
++    // If we've already got an array, just append.
++    this._events[type].push(listener);
++  else
++    // Adding the second element, need to change to array.
++    this._events[type] = [this._events[type], listener];
+ 
+-      for (var k = 0; k < WEIGHTS.length; k += 2) {
+-        var wx = WEIGHTS[k]
+-        var wix = 1.0 - wx
+-        var wy = 2.0 * WEIGHTS[k + 1] - 1.0
++  // Check for listener leak
++  if (isObject(this._events[type]) && !this._events[type].warned) {
++    if (!isUndefined(this._maxListeners)) {
++      m = this._maxListeners;
++    } else {
++      m = EventEmitter.defaultMaxListeners;
++    }
+ 
+-        positions.push(
+-          wix * ax + wx * bx, wix * ay + wx * by,
+-          wy * dx, wy * dy)
+-        colors.push(c_r, c_g, c_b, c_a)
+-        ids.push(pointId)
++    if (m && m > 0 && this._events[type].length > m) {
++      this._events[type].warned = true;
++      console.error('(node) warning: possible EventEmitter memory ' +
++                    'leak detected. %d listeners added. ' +
++                    'Use emitter.setMaxListeners() to increase limit.',
++                    this._events[type].length);
++      if (typeof console.trace === 'function') {
++        // not supported in IE 10
++        console.trace();
+       }
+     }
+   }
+ 
+-  this.positionBuffer.update(new Float32Array(positions))
+-  this.colorBuffer.update(new Uint8Array(colors))
+-  this.idBuffer.update(new Uint32Array(ids))
+-  this.numVertices = ids.length
+-
+-  var fillColors = options.fillColors
+-  var fillCellColors = []
+-  var fillCellPositions = []
+-  var fillVerts = 0
+-
+-  if (fillColors) {
+-    cleanPSLG(fillPositions, fillCells)
+-    var fillMesh = cdt2d(fillPositions, fillCells, {
+-      delaunay: false
+-    })
+-    for (i = 0; i < fillMesh.length; ++i) {
+-      var cell = fillMesh[i]
+-      var cx = 0
+-      var cy = 0
+-
+-      for (j = 0; j < 3; ++j) {
+-        var p = fillPositions[cell[j]]
+-        var px = interpolate(x, p[0])
+-        var py = interpolate(y, p[1])
+-        cx += p[0]
+-        cy += p[1]
+-        fillCellPositions.push(
+-          xs * (px - lox),
+-          ys * (py - loy))
+-      }
+-
+-      // Compute centroid of triangle
+-      cx /= 3
+-      cy /= 3
+-
+-      // Sample height field at triangle centroid
+-      var cxi = Math.floor(cx)
+-      var cyi = Math.floor(cy)
+-      var cxf = cx - cxi
+-      var cyf = cy - cyi
++  return this;
++};
+ 
+-      var c00 = zarray.get(cxi, cyi)
+-      var c01 = zarray.get(cxi, cyi + 1)
+-      var c10 = zarray.get(cxi + 1, cyi)
+-      var c11 = zarray.get(cxi + 1, cyi + 1)
++EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+ 
+-      var zlevel =
+-        (1 - cyf) * ((1 - cxf) * c00 + cxf * c10) +
+-        cyf * ((1 - cxf) * c01 + cxf * c11)
++EventEmitter.prototype.once = function(type, listener) {
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-      // Color triangle using centroid data
+-      var l = bsearch.le(levels, zlevel) + 1
+-      var cr = (255 * fillColors[4 * l + 0]) | 0
+-      var cg = (255 * fillColors[4 * l + 1]) | 0
+-      var cb = (255 * fillColors[4 * l + 2]) | 0
+-      var ca = (255 * fillColors[4 * l + 3]) | 0
++  var fired = false;
+ 
+-      fillCellColors.push(
+-        cr, cg, cb, ca,
+-        cr, cg, cb, ca,
+-        cr, cg, cb, ca)
++  function g() {
++    this.removeListener(type, g);
+ 
+-      fillVerts += 3
++    if (!fired) {
++      fired = true;
++      listener.apply(this, arguments);
+     }
+-
+-    this.fillPositionBuffer.update(new Float32Array(fillCellPositions))
+-    this.fillColorBuffer.update(new Uint8Array(fillCellColors))
+-
+-    this.fillVerts = fillVerts
+   }
+-}
+-
+-proto.dispose = function () {
+-  this.plot.removeObject(this)
+-}
+-
+-function createContour2D (plot, options) {
+-  var gl = plot.gl
+-
+-  var shader = createShader(gl, shaders.vertex, shaders.fragment)
+-  var pickShader = createShader(gl, shaders.pickVertex, shaders.pickFragment)
+-  var fillShader = createShader(gl, shaders.fillVertex, shaders.fragment)
+-
+-  var positionBuffer = createBuffer(gl)
+-  var colorBuffer = createBuffer(gl)
+-  var idBuffer = createBuffer(gl)
+-
+-  var fillPositionBuffer = createBuffer(gl)
+-  var fillColorBuffer = createBuffer(gl)
+-
+-  var contours = new GLContour2D(
+-    plot,
+-    shader,
+-    fillShader,
+-    pickShader,
+-    positionBuffer,
+-    colorBuffer,
+-    idBuffer,
+-    fillPositionBuffer,
+-    fillColorBuffer)
+-
+-  contours.update(options)
+-  plot.addObject(contours)
+ 
+-  return contours
+-}
++  g.listener = listener;
++  this.on(type, g);
+ 
+-},{"./lib/shaders":68,"binary-search-bounds":69,"cdt2d":16,"clean-pslg":23,"gl-buffer":66,"gl-shader":96,"iota-array":123,"ndarray":131,"surface-nets":146}],68:[function(require,module,exports){
+-'use strict'
++  return this;
++};
+ 
++// emits a 'removeListener' event iff the listener was removed
++EventEmitter.prototype.removeListener = function(type, listener) {
++  var list, position, length, i;
+ 
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-module.exports = {
+-  fragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
+-  vertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 tangent;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 screenShape;\nuniform float lineWidth;\nuniform float pointSize;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  fragColor = color;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  vec2 vTangent = normalize(viewTransform * vec3(tangent, 0)).xy;\n  vec2 offset = vec2(vTangent.y, -vTangent.x) / screenShape;\n\n  gl_Position = vec4(\n    vPosition.xy + offset * lineWidth * vPosition.z,\n    0,\n    vPosition.z);\n\n  gl_PointSize = pointSize;\n}\n",
+-  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragId;\nvoid main() {\n  gl_FragColor = fragId;\n}\n",
+-  pickVertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 viewTransform;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id / 255.0;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n",
+-  fillVertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  fragColor = color;\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n"
+-}
++  if (!this._events || !this._events[type])
++    return this;
+ 
+-},{}],69:[function(require,module,exports){
+-arguments[4][21][0].apply(exports,arguments)
+-},{"dup":21}],70:[function(require,module,exports){
+-'use strict'
++  list = this._events[type];
++  length = list.length;
++  position = -1;
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var pool = require('typedarray-pool')
+-var shaders = require('./lib/shaders')
++  if (list === listener ||
++      (isFunction(list.listener) && list.listener === listener)) {
++    delete this._events[type];
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
+ 
+-module.exports = createError2D
++  } else if (isObject(list)) {
++    for (i = length; i-- > 0;) {
++      if (list[i] === listener ||
++          (list[i].listener && list[i].listener === listener)) {
++        position = i;
++        break;
++      }
++    }
+ 
+-var WEIGHTS = [
+-  // x-error bar
+-  [1, 0, 0, 1, 0, 0],
+-  [1, 0, 0, -1, 0, 0],
+-  [-1, 0, 0, -1, 0, 0],
++    if (position < 0)
++      return this;
+ 
+-  [-1, 0, 0, -1, 0, 0],
+-  [-1, 0, 0, 1, 0, 0],
+-  [1, 0, 0, 1, 0, 0],
++    if (list.length === 1) {
++      list.length = 0;
++      delete this._events[type];
++    } else {
++      list.splice(position, 1);
++    }
+ 
+-  // x-error right cap
+-  [1, 0, -1, 0, 0, 1],
+-  [1, 0, -1, 0, 0, -1],
+-  [1, 0, 1, 0, 0, -1],
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
++  }
+ 
+-  [1, 0, 1, 0, 0, -1],
+-  [1, 0, 1, 0, 0, 1],
+-  [1, 0, -1, 0, 0, 1],
++  return this;
++};
+ 
+-  // x-error left cap
+-  [-1, 0, -1, 0, 0, 1],
+-  [-1, 0, -1, 0, 0, -1],
+-  [-1, 0, 1, 0, 0, -1],
++EventEmitter.prototype.removeAllListeners = function(type) {
++  var key, listeners;
+ 
+-  [-1, 0, 1, 0, 0, -1],
+-  [-1, 0, 1, 0, 0, 1],
+-  [-1, 0, -1, 0, 0, 1],
++  if (!this._events)
++    return this;
+ 
+-  // y-error bar
+-  [0, 1, 1, 0, 0, 0],
+-  [0, 1, -1, 0, 0, 0],
+-  [0, -1, -1, 0, 0, 0],
++  // not listening for removeListener, no need to emit
++  if (!this._events.removeListener) {
++    if (arguments.length === 0)
++      this._events = {};
++    else if (this._events[type])
++      delete this._events[type];
++    return this;
++  }
+ 
+-  [0, -1, -1, 0, 0, 0],
+-  [0, 1, 1, 0, 0, 0],
+-  [0, -1, 1, 0, 0, 0],
++  // emit removeListener for all listeners on all events
++  if (arguments.length === 0) {
++    for (key in this._events) {
++      if (key === 'removeListener') continue;
++      this.removeAllListeners(key);
++    }
++    this.removeAllListeners('removeListener');
++    this._events = {};
++    return this;
++  }
+ 
+-  // y-error top cap
+-  [0, 1, 0, -1, 1, 0],
+-  [0, 1, 0, -1, -1, 0],
+-  [0, 1, 0, 1, -1, 0],
++  listeners = this._events[type];
+ 
+-  [0, 1, 0, 1, 1, 0],
+-  [0, 1, 0, -1, 1, 0],
+-  [0, 1, 0, 1, -1, 0],
++  if (isFunction(listeners)) {
++    this.removeListener(type, listeners);
++  } else if (listeners) {
++    // LIFO order
++    while (listeners.length)
++      this.removeListener(type, listeners[listeners.length - 1]);
++  }
++  delete this._events[type];
+ 
+-  // y-error bottom cap
+-  [0, -1, 0, -1, 1, 0],
+-  [0, -1, 0, -1, -1, 0],
+-  [0, -1, 0, 1, -1, 0],
++  return this;
++};
+ 
+-  [0, -1, 0, 1, 1, 0],
+-  [0, -1, 0, -1, 1, 0],
+-  [0, -1, 0, 1, -1, 0]
+-]
++EventEmitter.prototype.listeners = function(type) {
++  var ret;
++  if (!this._events || !this._events[type])
++    ret = [];
++  else if (isFunction(this._events[type]))
++    ret = [this._events[type]];
++  else
++    ret = this._events[type].slice();
++  return ret;
++};
+ 
+-function GLError2D (plot, shader, buffer) {
+-  this.plot = plot
++EventEmitter.prototype.listenerCount = function(type) {
++  if (this._events) {
++    var evlistener = this._events[type];
+ 
+-  this.shader = shader
+-  this.buffer = buffer
++    if (isFunction(evlistener))
++      return 1;
++    else if (evlistener)
++      return evlistener.length;
++  }
++  return 0;
++};
+ 
+-  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
++EventEmitter.listenerCount = function(emitter, type) {
++  return emitter.listenerCount(type);
++};
+ 
+-  this.numPoints = 0
++function isFunction(arg) {
++  return typeof arg === 'function';
++}
+ 
+-  this.color = [0, 0, 0, 1]
++function isNumber(arg) {
++  return typeof arg === 'number';
+ }
+ 
+-var proto = GLError2D.prototype
++function isObject(arg) {
++  return typeof arg === 'object' && arg !== null;
++}
+ 
+-proto.draw = (function () {
+-  var MATRIX = [
+-    1, 0, 0,
+-    0, 1, 0,
+-    0, 0, 1
+-  ]
++function isUndefined(arg) {
++  return arg === void 0;
++}
+ 
+-  var PIXEL_SCALE = [1, 1]
++},{}],60:[function(require,module,exports){
++/**
++ * inspired by is-number <https://github.com/jonschlinkert/is-number>
++ * but significantly simplified and sped up by ignoring number and string constructors
++ * ie these return false:
++ *   new Number(1)
++ *   new String('1')
++ */
+ 
+-  return function () {
+-    var plot = this.plot
+-    var shader = this.shader
+-    var buffer = this.buffer
+-    var bounds = this.bounds
+-    var numPoints = this.numPoints
++'use strict';
+ 
+-    if (!numPoints) {
+-      return
++/**
++ * Is this string all whitespace?
++ * This solution kind of makes my brain hurt, but it's significantly faster
++ * than !str.trim() or any other solution I could find.
++ *
++ * whitespace codes from: http://en.wikipedia.org/wiki/Whitespace_character
++ * and verified with:
++ *
++ *  for(var i = 0; i < 65536; i++) {
++ *      var s = String.fromCharCode(i);
++ *      if(+s===0 && !s.trim()) console.log(i, s);
++ *  }
++ *
++ * which counts a couple of these as *not* whitespace, but finds nothing else
++ * that *is* whitespace. Note that charCodeAt stops at 16 bits, but it appears
++ * that there are no whitespace characters above this, and code points above
++ * this do not map onto white space characters.
++ */
++function allBlankCharCodes(str){
++    var l = str.length,
++        a;
++    for(var i = 0; i < l; i++) {
++        a = str.charCodeAt(i);
++        if((a < 9 || a > 13) && (a !== 32) && (a !== 133) && (a !== 160) &&
++            (a !== 5760) && (a !== 6158) && (a < 8192 || a > 8205) &&
++            (a !== 8232) && (a !== 8233) && (a !== 8239) && (a !== 8287) &&
++            (a !== 8288) && (a !== 12288) && (a !== 65279)) {
++                return false;
++        }
+     }
++    return true;
++}
+ 
+-    var gl = plot.gl
+-    var dataBox = plot.dataBox
+-    var viewBox = plot.viewBox
+-    var pixelRatio = plot.pixelRatio
+-
+-    var boundX = bounds[2] - bounds[0]
+-    var boundY = bounds[3] - bounds[1]
+-    var dataX = dataBox[2] - dataBox[0]
+-    var dataY = dataBox[3] - dataBox[1]
++module.exports = function(n) {
++    var type = typeof n;
++    if(type === 'string') {
++        var original = n;
++        n = +n;
++        // whitespace strings cast to zero - filter them out
++        if(n===0 && allBlankCharCodes(original)) return false;
++    }
++    else if(type !== 'number') return false;
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++    return n - n < 1;
++};
+ 
+-    var screenX = viewBox[2] - viewBox[0]
+-    var screenY = viewBox[3] - viewBox[1]
++},{}],61:[function(require,module,exports){
++"use strict"
+ 
+-    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
+-    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
++module.exports = createRBTree
+ 
+-    buffer.bind()
+-    shader.bind()
++var RED   = 0
++var BLACK = 1
+ 
+-    shader.uniforms.viewTransform = MATRIX
+-    shader.uniforms.pixelScale = PIXEL_SCALE
+-    shader.uniforms.color = this.color
++function RBNode(color, key, value, left, right, count) {
++  this._color = color
++  this.key = key
++  this.value = value
++  this.left = left
++  this.right = right
++  this._count = count
++}
+ 
+-    shader.attributes.position.pointer(
+-      gl.FLOAT,
+-      false,
+-      16,
+-      0)
++function cloneNode(node) {
++  return new RBNode(node._color, node.key, node.value, node.left, node.right, node._count)
++}
+ 
+-    shader.attributes.pixelOffset.pointer(
+-      gl.FLOAT,
+-      false,
+-      16,
+-      8)
++function repaint(color, node) {
++  return new RBNode(color, node.key, node.value, node.left, node.right, node._count)
++}
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, numPoints * WEIGHTS.length)
+-  }
+-})()
++function recount(node) {
++  node._count = 1 + (node.left ? node.left._count : 0) + (node.right ? node.right._count : 0)
++}
+ 
+-proto.drawPick = function (offset) { return offset }
+-proto.pick = function (x, y) {
+-  return null
++function RedBlackTree(compare, root) {
++  this._compare = compare
++  this.root = root
+ }
+ 
+-proto.update = function (options) {
+-  options = options || {}
++var proto = RedBlackTree.prototype
+ 
+-  var i, x, y
++Object.defineProperty(proto, "keys", {
++  get: function() {
++    var result = []
++    this.forEach(function(k,v) {
++      result.push(k)
++    })
++    return result
++  }
++})
+ 
+-  var positions = options.positions || []
+-  var errors = options.errors || []
++Object.defineProperty(proto, "values", {
++  get: function() {
++    var result = []
++    this.forEach(function(k,v) {
++      result.push(v)
++    })
++    return result
++  }
++})
+ 
+-  var lineWidth = 1
+-  if ('lineWidth' in options) {
+-    lineWidth = +options.lineWidth
++//Returns the number of nodes in the tree
++Object.defineProperty(proto, "length", {
++  get: function() {
++    if(this.root) {
++      return this.root._count
++    }
++    return 0
+   }
++})
+ 
+-  var capSize = 5
+-  if ('capSize' in options) {
+-    capSize = +options.capSize
++//Insert a new item into the tree
++proto.insert = function(key, value) {
++  var cmp = this._compare
++  //Find point to insert new node at
++  var n = this.root
++  var n_stack = []
++  var d_stack = []
++  while(n) {
++    var d = cmp(key, n.key)
++    n_stack.push(n)
++    d_stack.push(d)
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
++  }
++  //Rebuild path to leaf node
++  n_stack.push(new RBNode(RED, key, value, null, null, 1))
++  for(var s=n_stack.length-2; s>=0; --s) {
++    var n = n_stack[s]
++    if(d_stack[s] <= 0) {
++      n_stack[s] = new RBNode(n._color, n.key, n.value, n_stack[s+1], n.right, n._count+1)
++    } else {
++      n_stack[s] = new RBNode(n._color, n.key, n.value, n.left, n_stack[s+1], n._count+1)
++    }
++  }
++  //Rebalance tree using rotations
++  //console.log("start insert", key, d_stack)
++  for(var s=n_stack.length-1; s>1; --s) {
++    var p = n_stack[s-1]
++    var n = n_stack[s]
++    if(p._color === BLACK || n._color === BLACK) {
++      break
++    }
++    var pp = n_stack[s-2]
++    if(pp.left === p) {
++      if(p.left === n) {
++        var y = pp.right
++        if(y && y._color === RED) {
++          //console.log("LLr")
++          p._color = BLACK
++          pp.right = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("LLb")
++          pp._color = RED
++          pp.left = p.right
++          p._color = BLACK
++          p.right = pp
++          n_stack[s-2] = p
++          n_stack[s-1] = n
++          recount(pp)
++          recount(p)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.left === pp) {
++              ppp.left = p
++            } else {
++              ppp.right = p
++            }
++          }
++          break
++        }
++      } else {
++        var y = pp.right
++        if(y && y._color === RED) {
++          //console.log("LRr")
++          p._color = BLACK
++          pp.right = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("LRb")
++          p.right = n.left
++          pp._color = RED
++          pp.left = n.right
++          n._color = BLACK
++          n.left = p
++          n.right = pp
++          n_stack[s-2] = n
++          n_stack[s-1] = p
++          recount(pp)
++          recount(p)
++          recount(n)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.left === pp) {
++              ppp.left = n
++            } else {
++              ppp.right = n
++            }
++          }
++          break
++        }
++      }
++    } else {
++      if(p.right === n) {
++        var y = pp.left
++        if(y && y._color === RED) {
++          //console.log("RRr", y.key)
++          p._color = BLACK
++          pp.left = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("RRb")
++          pp._color = RED
++          pp.right = p.left
++          p._color = BLACK
++          p.left = pp
++          n_stack[s-2] = p
++          n_stack[s-1] = n
++          recount(pp)
++          recount(p)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.right === pp) {
++              ppp.right = p
++            } else {
++              ppp.left = p
++            }
++          }
++          break
++        }
++      } else {
++        var y = pp.left
++        if(y && y._color === RED) {
++          //console.log("RLr")
++          p._color = BLACK
++          pp.left = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("RLb")
++          p.left = n.right
++          pp._color = RED
++          pp.right = n.left
++          n._color = BLACK
++          n.right = p
++          n.left = pp
++          n_stack[s-2] = n
++          n_stack[s-1] = p
++          recount(pp)
++          recount(p)
++          recount(n)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.right === pp) {
++              ppp.right = n
++            } else {
++              ppp.left = n
++            }
++          }
++          break
++        }
++      }
++    }
+   }
++  //Return new tree
++  n_stack[0]._color = BLACK
++  return new RedBlackTree(cmp, n_stack[0])
++}
+ 
+-  this.color = (options.color || [0, 0, 0, 1]).slice()
+ 
+-  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
++//Visit all nodes inorder
++function doVisitFull(visit, node) {
++  if(node.left) {
++    var v = doVisitFull(visit, node.left)
++    if(v) { return v }
++  }
++  var v = visit(node.key, node.value)
++  if(v) { return v }
++  if(node.right) {
++    return doVisitFull(visit, node.right)
++  }
++}
+ 
+-  var numPoints = this.numPoints = positions.length >> 1
+-  for (i = 0; i < numPoints; ++i) {
+-    x = positions[i * 2]
+-    y = positions[i * 2 + 1]
++//Visit half nodes in order
++function doVisitHalf(lo, compare, visit, node) {
++  var l = compare(lo, node.key)
++  if(l <= 0) {
++    if(node.left) {
++      var v = doVisitHalf(lo, compare, visit, node.left)
++      if(v) { return v }
++    }
++    var v = visit(node.key, node.value)
++    if(v) { return v }
++  }
++  if(node.right) {
++    return doVisitHalf(lo, compare, visit, node.right)
++  }
++}
+ 
+-    bounds[0] = Math.min(x, bounds[0])
+-    bounds[1] = Math.min(y, bounds[1])
+-    bounds[2] = Math.max(x, bounds[2])
+-    bounds[3] = Math.max(y, bounds[3])
++//Visit all nodes within a range
++function doVisit(lo, hi, compare, visit, node) {
++  var l = compare(lo, node.key)
++  var h = compare(hi, node.key)
++  var v
++  if(l <= 0) {
++    if(node.left) {
++      v = doVisit(lo, hi, compare, visit, node.left)
++      if(v) { return v }
++    }
++    if(h > 0) {
++      v = visit(node.key, node.value)
++      if(v) { return v }
++    }
+   }
+-  if (bounds[2] === bounds[0]) {
+-    bounds[2] += 1
++  if(h > 0 && node.right) {
++    return doVisit(lo, hi, compare, visit, node.right)
+   }
+-  if (bounds[3] === bounds[1]) {
+-    bounds[3] += 1
++}
++
++
++proto.forEach = function rbTreeForEach(visit, lo, hi) {
++  if(!this.root) {
++    return
+   }
+-  var sx = 1.0 / (bounds[2] - bounds[0])
+-  var sy = 1.0 / (bounds[3] - bounds[1])
+-  var tx = bounds[0]
+-  var ty = bounds[1]
++  switch(arguments.length) {
++    case 1:
++      return doVisitFull(visit, this.root)
++    break
+ 
+-  var bufferData = pool.mallocFloat32(numPoints * WEIGHTS.length * 4)
+-  var ptr = 0
+-  for (i = 0; i < numPoints; ++i) {
+-    x = positions[2 * i]
+-    y = positions[2 * i + 1]
+-    var ex0 = errors[4 * i]
+-    var ex1 = errors[4 * i + 1]
+-    var ey0 = errors[4 * i + 2]
+-    var ey1 = errors[4 * i + 3]
++    case 2:
++      return doVisitHalf(lo, this._compare, visit, this.root)
++    break
+ 
+-    for (var j = 0; j < WEIGHTS.length; ++j) {
+-      var w = WEIGHTS[j]
++    case 3:
++      if(this._compare(lo, hi) >= 0) {
++        return
++      }
++      return doVisit(lo, hi, this._compare, visit, this.root)
++    break
++  }
++}
+ 
+-      var dx = w[0]
+-      var dy = w[1]
++//First item in list
++Object.defineProperty(proto, "begin", {
++  get: function() {
++    var stack = []
++    var n = this.root
++    while(n) {
++      stack.push(n)
++      n = n.left
++    }
++    return new RedBlackTreeIterator(this, stack)
++  }
++})
+ 
+-      if (dx < 0) {
+-        dx *= ex0
+-      } else if (dx > 0) {
+-        dx *= ex1
++//Last item in list
++Object.defineProperty(proto, "end", {
++  get: function() {
++    var stack = []
++    var n = this.root
++    while(n) {
++      stack.push(n)
++      n = n.right
++    }
++    return new RedBlackTreeIterator(this, stack)
++  }
++})
++
++//Find the ith item in the tree
++proto.at = function(idx) {
++  if(idx < 0) {
++    return new RedBlackTreeIterator(this, [])
++  }
++  var n = this.root
++  var stack = []
++  while(true) {
++    stack.push(n)
++    if(n.left) {
++      if(idx < n.left._count) {
++        n = n.left
++        continue
+       }
+-
+-      if (dy < 0) {
+-        dy *= ey0
+-      } else if (dy > 0) {
+-        dy *= ey1
++      idx -= n.left._count
++    }
++    if(!idx) {
++      return new RedBlackTreeIterator(this, stack)
++    }
++    idx -= 1
++    if(n.right) {
++      if(idx >= n.right._count) {
++        break
+       }
+-
+-      bufferData[ptr++] = sx * ((x - tx) + dx)
+-      bufferData[ptr++] = sy * ((y - ty) + dy)
+-      bufferData[ptr++] = lineWidth * w[2] + (capSize + lineWidth) * w[4]
+-      bufferData[ptr++] = lineWidth * w[3] + (capSize + lineWidth) * w[5]
++      n = n.right
++    } else {
++      break
+     }
+   }
+-  this.buffer.update(bufferData)
+-  pool.free(bufferData)
+-}
+-
+-proto.dispose = function () {
+-  this.plot.removeObject(this)
+-  this.shader.dispose()
+-  this.buffer.dispose()
++  return new RedBlackTreeIterator(this, [])
+ }
+ 
+-function createError2D (plot, options) {
+-  var shader = createShader(plot.gl, shaders.vertex, shaders.fragment)
+-  var buffer = createBuffer(plot.gl)
+-
+-  var errorbars = new GLError2D(plot, shader, buffer)
+-
+-  errorbars.update(options)
+-
+-  plot.addObject(errorbars)
+-
+-  return errorbars
++proto.ge = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d <= 0) {
++      last_ptr = stack.length
++    }
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
+ }
+ 
+-},{"./lib/shaders":71,"gl-buffer":66,"gl-shader":96,"typedarray-pool":151}],71:[function(require,module,exports){
+-
+-
+-module.exports = {
+-  vertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 pixelOffset;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvoid main() {\n  vec3 scrPosition = viewTransform * vec3(position, 1);\n  gl_Position = vec4(\n    scrPosition.xy + scrPosition.z * pixelScale * pixelOffset,\n    0,\n    scrPosition.z);\n}\n",
+-  fragment: "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
++proto.gt = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d < 0) {
++      last_ptr = stack.length
++    }
++    if(d < 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
+ }
+ 
+-},{}],72:[function(require,module,exports){
+-'use strict'
+-
+-var createTexture = require('gl-texture2d')
+-
+-module.exports = createFBO
+-
+-var colorAttachmentArrays = null
+-var FRAMEBUFFER_UNSUPPORTED
+-var FRAMEBUFFER_INCOMPLETE_ATTACHMENT
+-var FRAMEBUFFER_INCOMPLETE_DIMENSIONS
+-var FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+-
+-function saveFBOState(gl) {
+-  var fbo = gl.getParameter(gl.FRAMEBUFFER_BINDING)
+-  var rbo = gl.getParameter(gl.RENDERBUFFER_BINDING)
+-  var tex = gl.getParameter(gl.TEXTURE_BINDING_2D)
+-  return [fbo, rbo, tex]
++proto.lt = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d > 0) {
++      last_ptr = stack.length
++    }
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
+ }
+ 
+-function restoreFBOState(gl, data) {
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, data[0])
+-  gl.bindRenderbuffer(gl.RENDERBUFFER, data[1])
+-  gl.bindTexture(gl.TEXTURE_2D, data[2])
++proto.le = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d >= 0) {
++      last_ptr = stack.length
++    }
++    if(d < 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
+ }
+ 
+-function lazyInitColorAttachments(gl, ext) {
+-  var maxColorAttachments = gl.getParameter(ext.MAX_COLOR_ATTACHMENTS_WEBGL)
+-  colorAttachmentArrays = new Array(maxColorAttachments + 1)
+-  for(var i=0; i<=maxColorAttachments; ++i) {
+-    var x = new Array(maxColorAttachments)
+-    for(var j=0; j<i; ++j) {
+-      x[j] = gl.COLOR_ATTACHMENT0 + j
++//Finds the item with key if it exists
++proto.find = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d === 0) {
++      return new RedBlackTreeIterator(this, stack)
+     }
+-    for(var j=i; j<maxColorAttachments; ++j) {
+-      x[j] = gl.NONE
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
+-    colorAttachmentArrays[i] = x
+   }
++  return new RedBlackTreeIterator(this, [])
+ }
+ 
+-//Throw an appropriate error
+-function throwFBOError(status) {
+-  switch(status){
+-    case FRAMEBUFFER_UNSUPPORTED:
+-      throw new Error('gl-fbo: Framebuffer unsupported')
+-    case FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
+-      throw new Error('gl-fbo: Framebuffer incomplete attachment')
+-    case FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
+-      throw new Error('gl-fbo: Framebuffer incomplete dimensions')
+-    case FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
+-      throw new Error('gl-fbo: Framebuffer incomplete missing attachment')
+-    default:
+-      throw new Error('gl-fbo: Framebuffer failed for unspecified reason')
++//Removes item with key from tree
++proto.remove = function(key) {
++  var iter = this.find(key)
++  if(iter) {
++    return iter.remove()
+   }
++  return this
+ }
+ 
+-//Initialize a texture object
+-function initTexture(gl, width, height, type, format, attachment) {
+-  if(!type) {
+-    return null
++//Returns the item at `key`
++proto.get = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  while(n) {
++    var d = cmp(key, n.key)
++    if(d === 0) {
++      return n.value
++    }
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
+   }
+-  var result = createTexture(gl, width, height, format, type)
+-  result.magFilter = gl.NEAREST
+-  result.minFilter = gl.NEAREST
+-  result.mipSamples = 1
+-  result.bind()
+-  gl.framebufferTexture2D(gl.FRAMEBUFFER, attachment, gl.TEXTURE_2D, result.handle, 0)
+-  return result
++  return
+ }
+ 
+-//Initialize a render buffer object
+-function initRenderBuffer(gl, width, height, component, attachment) {
+-  var result = gl.createRenderbuffer()
+-  gl.bindRenderbuffer(gl.RENDERBUFFER, result)
+-  gl.renderbufferStorage(gl.RENDERBUFFER, component, width, height)
+-  gl.framebufferRenderbuffer(gl.FRAMEBUFFER, attachment, gl.RENDERBUFFER, result)
+-  return result
++//Iterator for red black tree
++function RedBlackTreeIterator(tree, stack) {
++  this.tree = tree
++  this._stack = stack
+ }
+ 
+-//Rebuild the frame buffer
+-function rebuildFBO(fbo) {
++var iproto = RedBlackTreeIterator.prototype
+ 
+-  //Save FBO state
+-  var state = saveFBOState(fbo.gl)
++//Test if iterator is valid
++Object.defineProperty(iproto, "valid", {
++  get: function() {
++    return this._stack.length > 0
++  }
++})
+ 
+-  var gl = fbo.gl
+-  var handle = fbo.handle = gl.createFramebuffer()
+-  var width = fbo._shape[0]
+-  var height = fbo._shape[1]
+-  var numColors = fbo.color.length
+-  var ext = fbo._ext
+-  var useStencil = fbo._useStencil
+-  var useDepth = fbo._useDepth
+-  var colorType = fbo._colorType
++//Node of the iterator
++Object.defineProperty(iproto, "node", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1]
++    }
++    return null
++  },
++  enumerable: true
++})
+ 
+-  //Bind the fbo
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, handle)
++//Makes a copy of an iterator
++iproto.clone = function() {
++  return new RedBlackTreeIterator(this.tree, this._stack.slice())
++}
+ 
+-  //Allocate color buffers
+-  for(var i=0; i<numColors; ++i) {
+-    fbo.color[i] = initTexture(gl, width, height, colorType, gl.RGBA, gl.COLOR_ATTACHMENT0 + i)
+-  }
+-  if(numColors === 0) {
+-    fbo._color_rb = initRenderBuffer(gl, width, height, gl.RGBA4, gl.COLOR_ATTACHMENT0)
+-    if(ext) {
+-      ext.drawBuffersWEBGL(colorAttachmentArrays[0])
++//Swaps two nodes
++function swapNode(n, v) {
++  n.key = v.key
++  n.value = v.value
++  n.left = v.left
++  n.right = v.right
++  n._color = v._color
++  n._count = v._count
++}
++
++//Fix up a double black node in a tree
++function fixDoubleBlack(stack) {
++  var n, p, s, z
++  for(var i=stack.length-1; i>=0; --i) {
++    n = stack[i]
++    if(i === 0) {
++      n._color = BLACK
++      return
++    }
++    //console.log("visit node:", n.key, i, stack[i].key, stack[i-1].key)
++    p = stack[i-1]
++    if(p.left === n) {
++      //console.log("left child")
++      s = p.right
++      if(s.right && s.right._color === RED) {
++        //console.log("case 1: right sibling child red")
++        s = p.right = cloneNode(s)
++        z = s.right = cloneNode(s.right)
++        p.right = s.left
++        s.left = p
++        s.right = z
++        s._color = p._color
++        n._color = BLACK
++        p._color = BLACK
++        z._color = BLACK
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = s
++          } else {
++            pp.right = s
++          }
++        }
++        stack[i-1] = s
++        return
++      } else if(s.left && s.left._color === RED) {
++        //console.log("case 1: left sibling child red")
++        s = p.right = cloneNode(s)
++        z = s.left = cloneNode(s.left)
++        p.right = z.left
++        s.left = z.right
++        z.left = p
++        z.right = s
++        z._color = p._color
++        p._color = BLACK
++        s._color = BLACK
++        n._color = BLACK
++        recount(p)
++        recount(s)
++        recount(z)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = z
++          } else {
++            pp.right = z
++          }
++        }
++        stack[i-1] = z
++        return
++      }
++      if(s._color === BLACK) {
++        if(p._color === RED) {
++          //console.log("case 2: black sibling, red parent", p.right.value)
++          p._color = BLACK
++          p.right = repaint(RED, s)
++          return
++        } else {
++          //console.log("case 2: black sibling, black parent", p.right.value)
++          p.right = repaint(RED, s)
++          continue  
++        }
++      } else {
++        //console.log("case 3: red sibling")
++        s = cloneNode(s)
++        p.right = s.left
++        s.left = p
++        s._color = p._color
++        p._color = RED
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = s
++          } else {
++            pp.right = s
++          }
++        }
++        stack[i-1] = s
++        stack[i] = p
++        if(i+1 < stack.length) {
++          stack[i+1] = n
++        } else {
++          stack.push(n)
++        }
++        i = i+2
++      }
++    } else {
++      //console.log("right child")
++      s = p.left
++      if(s.left && s.left._color === RED) {
++        //console.log("case 1: left sibling child red", p.value, p._color)
++        s = p.left = cloneNode(s)
++        z = s.left = cloneNode(s.left)
++        p.left = s.right
++        s.right = p
++        s.left = z
++        s._color = p._color
++        n._color = BLACK
++        p._color = BLACK
++        z._color = BLACK
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = s
++          } else {
++            pp.left = s
++          }
++        }
++        stack[i-1] = s
++        return
++      } else if(s.right && s.right._color === RED) {
++        //console.log("case 1: right sibling child red")
++        s = p.left = cloneNode(s)
++        z = s.right = cloneNode(s.right)
++        p.left = z.right
++        s.right = z.left
++        z.right = p
++        z.left = s
++        z._color = p._color
++        p._color = BLACK
++        s._color = BLACK
++        n._color = BLACK
++        recount(p)
++        recount(s)
++        recount(z)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = z
++          } else {
++            pp.left = z
++          }
++        }
++        stack[i-1] = z
++        return
++      }
++      if(s._color === BLACK) {
++        if(p._color === RED) {
++          //console.log("case 2: black sibling, red parent")
++          p._color = BLACK
++          p.left = repaint(RED, s)
++          return
++        } else {
++          //console.log("case 2: black sibling, black parent")
++          p.left = repaint(RED, s)
++          continue  
++        }
++      } else {
++        //console.log("case 3: red sibling")
++        s = cloneNode(s)
++        p.left = s.right
++        s.right = p
++        s._color = p._color
++        p._color = RED
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = s
++          } else {
++            pp.left = s
++          }
++        }
++        stack[i-1] = s
++        stack[i] = p
++        if(i+1 < stack.length) {
++          stack[i+1] = n
++        } else {
++          stack.push(n)
++        }
++        i = i+2
++      }
+     }
+-  } else if(numColors > 1) {
+-    ext.drawBuffersWEBGL(colorAttachmentArrays[numColors])
+   }
++}
+ 
+-  //Allocate depth/stencil buffers
+-  var WEBGL_depth_texture = gl.getExtension('WEBGL_depth_texture')
+-  if(WEBGL_depth_texture) {
+-    if(useStencil) {
+-      fbo.depth = initTexture(gl, width, height,
+-                          WEBGL_depth_texture.UNSIGNED_INT_24_8_WEBGL,
+-                          gl.DEPTH_STENCIL,
+-                          gl.DEPTH_STENCIL_ATTACHMENT)
+-    } else if(useDepth) {
+-      fbo.depth = initTexture(gl, width, height,
+-                          gl.UNSIGNED_SHORT,
+-                          gl.DEPTH_COMPONENT,
+-                          gl.DEPTH_ATTACHMENT)
+-    }
+-  } else {
+-    if(useDepth && useStencil) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_STENCIL, gl.DEPTH_STENCIL_ATTACHMENT)
+-    } else if(useDepth) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_COMPONENT16, gl.DEPTH_ATTACHMENT)
+-    } else if(useStencil) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.STENCIL_INDEX, gl.STENCIL_ATTACHMENT)
++//Removes item at iterator from tree
++iproto.remove = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
++    return this.tree
++  }
++  //First copy path to node
++  var cstack = new Array(stack.length)
++  var n = stack[stack.length-1]
++  cstack[cstack.length-1] = new RBNode(n._color, n.key, n.value, n.left, n.right, n._count)
++  for(var i=stack.length-2; i>=0; --i) {
++    var n = stack[i]
++    if(n.left === stack[i+1]) {
++      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
++    } else {
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
+     }
+   }
+ 
+-  //Check frame buffer state
+-  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
+-  if(status !== gl.FRAMEBUFFER_COMPLETE) {
++  //Get node
++  n = cstack[cstack.length-1]
++  //console.log("start remove: ", n.value)
+ 
+-    //Release all partially allocated resources
+-    fbo._destroyed = true
++  //If not leaf, then swap with previous node
++  if(n.left && n.right) {
++    //console.log("moving to leaf")
+ 
+-    //Release all resources
+-    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-    gl.deleteFramebuffer(fbo.handle)
+-    fbo.handle = null
+-    if(fbo.depth) {
+-      fbo.depth.dispose()
+-      fbo.depth = null
++    //First walk to previous leaf
++    var split = cstack.length
++    n = n.left
++    while(n.right) {
++      cstack.push(n)
++      n = n.right
+     }
+-    if(fbo._depth_rb) {
+-      gl.deleteRenderbuffer(fbo._depth_rb)
+-      fbo._depth_rb = null
++    //Copy path to leaf
++    var v = cstack[split-1]
++    cstack.push(new RBNode(n._color, v.key, v.value, n.left, n.right, n._count))
++    cstack[split-1].key = n.key
++    cstack[split-1].value = n.value
++
++    //Fix up stack
++    for(var i=cstack.length-2; i>=split; --i) {
++      n = cstack[i]
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
+     }
+-    for(var i=0; i<fbo.color.length; ++i) {
+-      fbo.color[i].dispose()
+-      fbo.color[i] = null
++    cstack[split-1].left = cstack[split]
++  }
++  //console.log("stack=", cstack.map(function(v) { return v.value }))
++
++  //Remove leaf node
++  n = cstack[cstack.length-1]
++  if(n._color === RED) {
++    //Easy case: removing red leaf
++    //console.log("RED leaf")
++    var p = cstack[cstack.length-2]
++    if(p.left === n) {
++      p.left = null
++    } else if(p.right === n) {
++      p.right = null
+     }
+-    if(fbo._color_rb) {
+-      gl.deleteRenderbuffer(fbo._color_rb)
+-      fbo._color_rb = null
++    cstack.pop()
++    for(var i=0; i<cstack.length; ++i) {
++      cstack[i]._count--
++    }
++    return new RedBlackTree(this.tree._compare, cstack[0])
++  } else {
++    if(n.left || n.right) {
++      //Second easy case:  Single child black parent
++      //console.log("BLACK single child")
++      if(n.left) {
++        swapNode(n, n.left)
++      } else if(n.right) {
++        swapNode(n, n.right)
++      }
++      //Child must be red, so repaint it black to balance color
++      n._color = BLACK
++      for(var i=0; i<cstack.length-1; ++i) {
++        cstack[i]._count--
++      }
++      return new RedBlackTree(this.tree._compare, cstack[0])
++    } else if(cstack.length === 1) {
++      //Third easy case: root
++      //console.log("ROOT")
++      return new RedBlackTree(this.tree._compare, null)
++    } else {
++      //Hard case: Repaint n, and then do some nasty stuff
++      //console.log("BLACK leaf no children")
++      for(var i=0; i<cstack.length; ++i) {
++        cstack[i]._count--
++      }
++      var parent = cstack[cstack.length-2]
++      fixDoubleBlack(cstack)
++      //Fix up links
++      if(parent.left === n) {
++        parent.left = null
++      } else {
++        parent.right = null
++      }
+     }
+-
+-    restoreFBOState(gl, state)
+-
+-    //Throw the frame buffer error
+-    throwFBOError(status)
+   }
+-
+-  //Everything ok, let's get on with life
+-  restoreFBOState(gl, state)
++  return new RedBlackTree(this.tree._compare, cstack[0])
+ }
+ 
+-function Framebuffer(gl, width, height, colorType, numColors, useDepth, useStencil, ext) {
+-
+-  //Handle and set properties
+-  this.gl = gl
+-  this._shape = [width|0, height|0]
+-  this._destroyed = false
+-  this._ext = ext
++//Returns key
++Object.defineProperty(iproto, "key", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1].key
++    }
++    return
++  },
++  enumerable: true
++})
+ 
+-  //Allocate buffers
+-  this.color = new Array(numColors)
+-  for(var i=0; i<numColors; ++i) {
+-    this.color[i] = null
+-  }
+-  this._color_rb = null
+-  this.depth = null
+-  this._depth_rb = null
++//Returns value
++Object.defineProperty(iproto, "value", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1].value
++    }
++    return
++  },
++  enumerable: true
++})
+ 
+-  //Save depth and stencil flags
+-  this._colorType = colorType
+-  this._useDepth = useDepth
+-  this._useStencil = useStencil
+ 
+-  //Shape vector for resizing
+-  var parent = this
+-  var shapeVector = [width|0, height|0]
+-  Object.defineProperties(shapeVector, {
+-    0: {
+-      get: function() {
+-        return parent._shape[0]
+-      },
+-      set: function(w) {
+-        return parent.width = w
++//Returns the position of this iterator in the sorted list
++Object.defineProperty(iproto, "index", {
++  get: function() {
++    var idx = 0
++    var stack = this._stack
++    if(stack.length === 0) {
++      var r = this.tree.root
++      if(r) {
++        return r._count
+       }
+-    },
+-    1: {
+-      get: function() {
+-        return parent._shape[1]
+-      },
+-      set: function(h) {
+-        return parent.height = h
++      return 0
++    } else if(stack[stack.length-1].left) {
++      idx = stack[stack.length-1].left._count
++    }
++    for(var s=stack.length-2; s>=0; --s) {
++      if(stack[s+1] === stack[s].right) {
++        ++idx
++        if(stack[s].left) {
++          idx += stack[s].left._count
++        }
+       }
+     }
+-  })
+-  this._shapeVector = shapeVector
++    return idx
++  },
++  enumerable: true
++})
+ 
+-  //Initialize all attachments
+-  rebuildFBO(this)
++//Advances iterator to next element in list
++iproto.next = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
++    return
++  }
++  var n = stack[stack.length-1]
++  if(n.right) {
++    n = n.right
++    while(n) {
++      stack.push(n)
++      n = n.left
++    }
++  } else {
++    stack.pop()
++    while(stack.length > 0 && stack[stack.length-1].right === n) {
++      n = stack[stack.length-1]
++      stack.pop()
++    }
++  }
+ }
+ 
+-var proto = Framebuffer.prototype
++//Checks if iterator is at end of tree
++Object.defineProperty(iproto, "hasNext", {
++  get: function() {
++    var stack = this._stack
++    if(stack.length === 0) {
++      return false
++    }
++    if(stack[stack.length-1].right) {
++      return true
++    }
++    for(var s=stack.length-1; s>0; --s) {
++      if(stack[s-1].left === stack[s]) {
++        return true
++      }
++    }
++    return false
++  }
++})
+ 
+-function reshapeFBO(fbo, w, h) {
+-  //If fbo is invalid, just skip this
+-  if(fbo._destroyed) {
+-    throw new Error('gl-fbo: Can\'t resize destroyed FBO')
++//Update value
++iproto.update = function(value) {
++  var stack = this._stack
++  if(stack.length === 0) {
++    throw new Error("Can't update empty node!")
++  }
++  var cstack = new Array(stack.length)
++  var n = stack[stack.length-1]
++  cstack[cstack.length-1] = new RBNode(n._color, n.key, value, n.left, n.right, n._count)
++  for(var i=stack.length-2; i>=0; --i) {
++    n = stack[i]
++    if(n.left === stack[i+1]) {
++      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
++    } else {
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++    }
+   }
++  return new RedBlackTree(this.tree._compare, cstack[0])
++}
+ 
+-  //Don't resize if no change in shape
+-  if( (fbo._shape[0] === w) &&
+-      (fbo._shape[1] === h) ) {
++//Moves iterator backward one element
++iproto.prev = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
+     return
+   }
++  var n = stack[stack.length-1]
++  if(n.left) {
++    n = n.left
++    while(n) {
++      stack.push(n)
++      n = n.right
++    }
++  } else {
++    stack.pop()
++    while(stack.length > 0 && stack[stack.length-1].left === n) {
++      n = stack[stack.length-1]
++      stack.pop()
++    }
++  }
++}
+ 
+-  var gl = fbo.gl
++//Checks if iterator is at start of tree
++Object.defineProperty(iproto, "hasPrev", {
++  get: function() {
++    var stack = this._stack
++    if(stack.length === 0) {
++      return false
++    }
++    if(stack[stack.length-1].left) {
++      return true
++    }
++    for(var s=stack.length-1; s>0; --s) {
++      if(stack[s-1].right === stack[s]) {
++        return true
++      }
++    }
++    return false
++  }
++})
+ 
+-  //Check parameter ranges
+-  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
+-  if( w < 0 || w > maxFBOSize ||
+-      h < 0 || h > maxFBOSize) {
+-    throw new Error('gl-fbo: Can\'t resize FBO, invalid dimensions')
++//Default comparison function
++function defaultCompare(a, b) {
++  if(a < b) {
++    return -1
++  }
++  if(a > b) {
++    return 1
+   }
++  return 0
++}
+ 
+-  //Update shape
+-  fbo._shape[0] = w
+-  fbo._shape[1] = h
++//Build a tree
++function createRBTree(compare) {
++  return new RedBlackTree(compare || defaultCompare, null)
++}
++},{}],62:[function(require,module,exports){
++// transliterated from the python snippet here:
++// http://en.wikipedia.org/wiki/Lanczos_approximation
+ 
+-  //Save framebuffer state
+-  var state = saveFBOState(gl)
++var g = 7;
++var p = [
++    0.99999999999980993,
++    676.5203681218851,
++    -1259.1392167224028,
++    771.32342877765313,
++    -176.61502916214059,
++    12.507343278686905,
++    -0.13857109526572012,
++    9.9843695780195716e-6,
++    1.5056327351493116e-7
++];
+ 
+-  //Resize framebuffer attachments
+-  for(var i=0; i<fbo.color.length; ++i) {
+-    fbo.color[i].shape = fbo._shape
+-  }
+-  if(fbo._color_rb) {
+-    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._color_rb)
+-    gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fbo._shape[0], fbo._shape[1])
+-  }
+-  if(fbo.depth) {
+-    fbo.depth.shape = fbo._shape
+-  }
+-  if(fbo._depth_rb) {
+-    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._depth_rb)
+-    if(fbo._useDepth && fbo._useStencil) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, fbo._shape[0], fbo._shape[1])
+-    } else if(fbo._useDepth) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, fbo._shape[0], fbo._shape[1])
+-    } else if(fbo._useStencil) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.STENCIL_INDEX, fbo._shape[0], fbo._shape[1])
+-    }
+-  }
++var g_ln = 607/128;
++var p_ln = [
++    0.99999999999999709182,
++    57.156235665862923517,
++    -59.597960355475491248,
++    14.136097974741747174,
++    -0.49191381609762019978,
++    0.33994649984811888699e-4,
++    0.46523628927048575665e-4,
++    -0.98374475304879564677e-4,
++    0.15808870322491248884e-3,
++    -0.21026444172410488319e-3,
++    0.21743961811521264320e-3,
++    -0.16431810653676389022e-3,
++    0.84418223983852743293e-4,
++    -0.26190838401581408670e-4,
++    0.36899182659531622704e-5
++];
+ 
+-  //Check FBO status after resize, if something broke then die in a fire
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo.handle)
+-  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
+-  if(status !== gl.FRAMEBUFFER_COMPLETE) {
+-    fbo.dispose()
+-    restoreFBOState(gl, state)
+-    throwFBOError(status)
+-  }
++// Spouge approximation (suitable for large arguments)
++function lngamma(z) {
+ 
+-  //Restore framebuffer state
+-  restoreFBOState(gl, state)
++    if(z < 0) return Number('0/0');
++    var x = p_ln[0];
++    for(var i = p_ln.length - 1; i > 0; --i) x += p_ln[i] / (z + i);
++    var t = z + g_ln + 0.5;
++    return .5*Math.log(2*Math.PI)+(z+.5)*Math.log(t)-t+Math.log(x)-Math.log(z);
+ }
+ 
+-Object.defineProperties(proto, {
+-  'shape': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return [0,0]
+-      }
+-      return this._shapeVector
+-    },
+-    set: function(x) {
+-      if(!Array.isArray(x)) {
+-        x = [x|0, x|0]
+-      }
+-      if(x.length !== 2) {
+-        throw new Error('gl-fbo: Shape vector must be length 2')
+-      }
++module.exports = function gamma (z) {
++    if (z < 0.5) {
++        return Math.PI / (Math.sin(Math.PI * z) * gamma(1 - z));
++    }
++    else if(z > 100) return Math.exp(lngamma(z));
++    else {
++        z -= 1;
++        var x = p[0];
++        for (var i = 1; i < g + 2; i++) {
++            x += p[i] / (z + i);
++        }
++        var t = z + g + 0.5;
+ 
+-      var w = x[0]|0
+-      var h = x[1]|0
+-      reshapeFBO(this, w, h)
++        return Math.sqrt(2 * Math.PI)
++            * Math.pow(t, z + 0.5)
++            * Math.exp(-t)
++            * x
++        ;
++    }
++};
+ 
+-      return [w, h]
+-    },
+-    enumerable: false
+-  },
+-  'width': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return 0
+-      }
+-      return this._shape[0]
+-    },
+-    set: function(w) {
+-      w = w|0
+-      reshapeFBO(this, w, this._shape[1])
+-      return w
+-    },
+-    enumerable: false
+-  },
+-  'height': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return 0
+-      }
+-      return this._shape[1]
+-    },
+-    set: function(h) {
+-      h = h|0
+-      reshapeFBO(this, this._shape[0], h)
+-      return h
+-    },
+-    enumerable: false
+-  }
+-})
++module.exports.log = lngamma;
+ 
+-proto.bind = function() {
+-  if(this._destroyed) {
+-    return
+-  }
+-  var gl = this.gl
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, this.handle)
+-  gl.viewport(0, 0, this._shape[0], this._shape[1])
++},{}],63:[function(require,module,exports){
++"use strict"
++
++var pool = require("typedarray-pool")
++var ops = require("ndarray-ops")
++var ndarray = require("ndarray")
++
++var SUPPORTED_TYPES = [
++  "uint8",
++  "uint8_clamped",
++  "uint16",
++  "uint32",
++  "int8",
++  "int16",
++  "int32",
++  "float32" ]
++
++function GLBuffer(gl, type, handle, length, usage) {
++  this.gl = gl
++  this.type = type
++  this.handle = handle
++  this.length = length
++  this.usage = usage
+ }
+ 
+-proto.dispose = function() {
+-  if(this._destroyed) {
+-    return
+-  }
+-  this._destroyed = true
+-  var gl = this.gl
+-  gl.deleteFramebuffer(this.handle)
+-  this.handle = null
+-  if(this.depth) {
+-    this.depth.dispose()
+-    this.depth = null
+-  }
+-  if(this._depth_rb) {
+-    gl.deleteRenderbuffer(this._depth_rb)
+-    this._depth_rb = null
+-  }
+-  for(var i=0; i<this.color.length; ++i) {
+-    this.color[i].dispose()
+-    this.color[i] = null
+-  }
+-  if(this._color_rb) {
+-    gl.deleteRenderbuffer(this._color_rb)
+-    this._color_rb = null
+-  }
++var proto = GLBuffer.prototype
++
++proto.bind = function() {
++  this.gl.bindBuffer(this.type, this.handle)
+ }
+ 
+-function createFBO(gl, width, height, options) {
++proto.unbind = function() {
++  this.gl.bindBuffer(this.type, null)
++}
+ 
+-  //Update frame buffer error code values
+-  if(!FRAMEBUFFER_UNSUPPORTED) {
+-    FRAMEBUFFER_UNSUPPORTED = gl.FRAMEBUFFER_UNSUPPORTED
+-    FRAMEBUFFER_INCOMPLETE_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT
+-    FRAMEBUFFER_INCOMPLETE_DIMENSIONS = gl.FRAMEBUFFER_INCOMPLETE_DIMENSIONS
+-    FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+-  }
++proto.dispose = function() {
++  this.gl.deleteBuffer(this.handle)
++}
+ 
+-  //Lazily initialize color attachment arrays
+-  var WEBGL_draw_buffers = gl.getExtension('WEBGL_draw_buffers')
+-  if(!colorAttachmentArrays && WEBGL_draw_buffers) {
+-    lazyInitColorAttachments(gl, WEBGL_draw_buffers)
++function updateTypeArray(gl, type, len, usage, data, offset) {
++  var dataLen = data.length * data.BYTES_PER_ELEMENT
++  if(offset < 0) {
++    gl.bufferData(type, data, usage)
++    return dataLen
+   }
+-
+-  //Special case: Can accept an array as argument
+-  if(Array.isArray(width)) {
+-    options = height
+-    height = width[1]|0
+-    width = width[0]|0
++  if(dataLen + offset > len) {
++    throw new Error("gl-buffer: If resizing buffer, must not specify offset")
+   }
++  gl.bufferSubData(type, offset, data)
++  return len
++}
+ 
+-  if(typeof width !== 'number') {
+-    throw new Error('gl-fbo: Missing shape parameter')
++function makeScratchTypeArray(array, dtype) {
++  var res = pool.malloc(array.length, dtype)
++  var n = array.length
++  for(var i=0; i<n; ++i) {
++    res[i] = array[i]
+   }
++  return res
++}
+ 
+-  //Validate width/height properties
+-  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
+-  if(width < 0 || width > maxFBOSize || height < 0 || height > maxFBOSize) {
+-    throw new Error('gl-fbo: Parameters are too large for FBO')
++function isPacked(shape, stride) {
++  var n = 1
++  for(var i=stride.length-1; i>=0; --i) {
++    if(stride[i] !== n) {
++      return false
++    }
++    n *= shape[i]
+   }
++  return true
++}
+ 
+-  //Handle each option type
+-  options = options || {}
+-
+-  //Figure out number of color buffers to use
+-  var numColors = 1
+-  if('color' in options) {
+-    numColors = Math.max(options.color|0, 0)
+-    if(numColors < 0) {
+-      throw new Error('gl-fbo: Must specify a nonnegative number of colors')
++proto.update = function(array, offset) {
++  if(typeof offset !== "number") {
++    offset = -1
++  }
++  this.bind()
++  if(typeof array === "object" && typeof array.shape !== "undefined") { //ndarray
++    var dtype = array.dtype
++    if(SUPPORTED_TYPES.indexOf(dtype) < 0) {
++      dtype = "float32"
+     }
+-    if(numColors > 1) {
+-      //Check if multiple render targets supported
+-      if(!WEBGL_draw_buffers) {
+-        throw new Error('gl-fbo: Multiple draw buffer extension not supported')
+-      } else if(numColors > gl.getParameter(WEBGL_draw_buffers.MAX_COLOR_ATTACHMENTS_WEBGL)) {
+-        throw new Error('gl-fbo: Context does not support ' + numColors + ' draw buffers')
++    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
++      var ext = gl.getExtension('OES_element_index_uint')
++      if(ext && dtype !== "uint16") {
++        dtype = "uint32"
++      } else {
++        dtype = "uint16"
+       }
+     }
+-  }
+-
+-  //Determine whether to use floating point textures
+-  var colorType = gl.UNSIGNED_BYTE
+-  var OES_texture_float = gl.getExtension('OES_texture_float')
+-  if(options.float && numColors > 0) {
+-    if(!OES_texture_float) {
+-      throw new Error('gl-fbo: Context does not support floating point textures')
++    if(dtype === array.dtype && isPacked(array.shape, array.stride)) {
++      if(array.offset === 0 && array.data.length === array.shape[0]) {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data, offset)
++      } else {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data.subarray(array.offset, array.shape[0]), offset)
++      }
++    } else {
++      var tmp = pool.malloc(array.size, dtype)
++      var ndt = ndarray(tmp, array.shape)
++      ops.assign(ndt, array)
++      if(offset < 0) {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp, offset)
++      } else {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp.subarray(0, array.size), offset)
++      }
++      pool.free(tmp)
+     }
+-    colorType = gl.FLOAT
+-  } else if(options.preferFloat && numColors > 0) {
+-    if(OES_texture_float) {
+-      colorType = gl.FLOAT
++  } else if(Array.isArray(array)) { //Vanilla array
++    var t
++    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
++      t = makeScratchTypeArray(array, "uint16")
++    } else {
++      t = makeScratchTypeArray(array, "float32")
++    }
++    if(offset < 0) {
++      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t, offset)
++    } else {
++      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t.subarray(0, array.length), offset)
++    }
++    pool.free(t)
++  } else if(typeof array === "object" && typeof array.length === "number") { //Typed array
++    this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array, offset)
++  } else if(typeof array === "number" || array === undefined) { //Number/default
++    if(offset >= 0) {
++      throw new Error("gl-buffer: Cannot specify offset when resizing buffer")
++    }
++    array = array | 0
++    if(array <= 0) {
++      array = 1
+     }
++    this.gl.bufferData(this.type, array|0, this.usage)
++    this.length = array
++  } else { //Error, case should not happen
++    throw new Error("gl-buffer: Invalid data type")
+   }
++}
+ 
+-  //Check if we should use depth buffer
+-  var useDepth = true
+-  if('depth' in options) {
+-    useDepth = !!options.depth
++function createBuffer(gl, data, type, usage) {
++  type = type || gl.ARRAY_BUFFER
++  usage = usage || gl.DYNAMIC_DRAW
++  if(type !== gl.ARRAY_BUFFER && type !== gl.ELEMENT_ARRAY_BUFFER) {
++    throw new Error("gl-buffer: Invalid type for webgl buffer, must be either gl.ARRAY_BUFFER or gl.ELEMENT_ARRAY_BUFFER")
+   }
+-
+-  //Check if we should use a stencil buffer
+-  var useStencil = false
+-  if('stencil' in options) {
+-    useStencil = !!options.stencil
++  if(usage !== gl.DYNAMIC_DRAW && usage !== gl.STATIC_DRAW && usage !== gl.STREAM_DRAW) {
++    throw new Error("gl-buffer: Invalid usage for buffer, must be either gl.DYNAMIC_DRAW, gl.STATIC_DRAW or gl.STREAM_DRAW")
+   }
++  var handle = gl.createBuffer()
++  var result = new GLBuffer(gl, type, handle, 0, usage)
++  result.update(data)
++  return result
++}
+ 
+-  return new Framebuffer(
+-    gl,
+-    width,
+-    height,
+-    colorType,
+-    numColors,
+-    useDepth,
+-    useStencil,
+-    WEBGL_draw_buffers)
++module.exports = createBuffer
++
++},{"ndarray":123,"ndarray-ops":122,"typedarray-pool":162}],64:[function(require,module,exports){
++module.exports = {
++  0: 'NONE',
++  1: 'ONE',
++  2: 'LINE_LOOP',
++  3: 'LINE_STRIP',
++  4: 'TRIANGLES',
++  5: 'TRIANGLE_STRIP',
++  6: 'TRIANGLE_FAN',
++  256: 'DEPTH_BUFFER_BIT',
++  512: 'NEVER',
++  513: 'LESS',
++  514: 'EQUAL',
++  515: 'LEQUAL',
++  516: 'GREATER',
++  517: 'NOTEQUAL',
++  518: 'GEQUAL',
++  519: 'ALWAYS',
++  768: 'SRC_COLOR',
++  769: 'ONE_MINUS_SRC_COLOR',
++  770: 'SRC_ALPHA',
++  771: 'ONE_MINUS_SRC_ALPHA',
++  772: 'DST_ALPHA',
++  773: 'ONE_MINUS_DST_ALPHA',
++  774: 'DST_COLOR',
++  775: 'ONE_MINUS_DST_COLOR',
++  776: 'SRC_ALPHA_SATURATE',
++  1024: 'STENCIL_BUFFER_BIT',
++  1028: 'FRONT',
++  1029: 'BACK',
++  1032: 'FRONT_AND_BACK',
++  1280: 'INVALID_ENUM',
++  1281: 'INVALID_VALUE',
++  1282: 'INVALID_OPERATION',
++  1285: 'OUT_OF_MEMORY',
++  1286: 'INVALID_FRAMEBUFFER_OPERATION',
++  2304: 'CW',
++  2305: 'CCW',
++  2849: 'LINE_WIDTH',
++  2884: 'CULL_FACE',
++  2885: 'CULL_FACE_MODE',
++  2886: 'FRONT_FACE',
++  2928: 'DEPTH_RANGE',
++  2929: 'DEPTH_TEST',
++  2930: 'DEPTH_WRITEMASK',
++  2931: 'DEPTH_CLEAR_VALUE',
++  2932: 'DEPTH_FUNC',
++  2960: 'STENCIL_TEST',
++  2961: 'STENCIL_CLEAR_VALUE',
++  2962: 'STENCIL_FUNC',
++  2963: 'STENCIL_VALUE_MASK',
++  2964: 'STENCIL_FAIL',
++  2965: 'STENCIL_PASS_DEPTH_FAIL',
++  2966: 'STENCIL_PASS_DEPTH_PASS',
++  2967: 'STENCIL_REF',
++  2968: 'STENCIL_WRITEMASK',
++  2978: 'VIEWPORT',
++  3024: 'DITHER',
++  3042: 'BLEND',
++  3088: 'SCISSOR_BOX',
++  3089: 'SCISSOR_TEST',
++  3106: 'COLOR_CLEAR_VALUE',
++  3107: 'COLOR_WRITEMASK',
++  3317: 'UNPACK_ALIGNMENT',
++  3333: 'PACK_ALIGNMENT',
++  3379: 'MAX_TEXTURE_SIZE',
++  3386: 'MAX_VIEWPORT_DIMS',
++  3408: 'SUBPIXEL_BITS',
++  3410: 'RED_BITS',
++  3411: 'GREEN_BITS',
++  3412: 'BLUE_BITS',
++  3413: 'ALPHA_BITS',
++  3414: 'DEPTH_BITS',
++  3415: 'STENCIL_BITS',
++  3553: 'TEXTURE_2D',
++  4352: 'DONT_CARE',
++  4353: 'FASTEST',
++  4354: 'NICEST',
++  5120: 'BYTE',
++  5121: 'UNSIGNED_BYTE',
++  5122: 'SHORT',
++  5123: 'UNSIGNED_SHORT',
++  5124: 'INT',
++  5125: 'UNSIGNED_INT',
++  5126: 'FLOAT',
++  5386: 'INVERT',
++  5890: 'TEXTURE',
++  6401: 'STENCIL_INDEX',
++  6402: 'DEPTH_COMPONENT',
++  6406: 'ALPHA',
++  6407: 'RGB',
++  6408: 'RGBA',
++  6409: 'LUMINANCE',
++  6410: 'LUMINANCE_ALPHA',
++  7680: 'KEEP',
++  7681: 'REPLACE',
++  7682: 'INCR',
++  7683: 'DECR',
++  7936: 'VENDOR',
++  7937: 'RENDERER',
++  7938: 'VERSION',
++  9728: 'NEAREST',
++  9729: 'LINEAR',
++  9984: 'NEAREST_MIPMAP_NEAREST',
++  9985: 'LINEAR_MIPMAP_NEAREST',
++  9986: 'NEAREST_MIPMAP_LINEAR',
++  9987: 'LINEAR_MIPMAP_LINEAR',
++  10240: 'TEXTURE_MAG_FILTER',
++  10241: 'TEXTURE_MIN_FILTER',
++  10242: 'TEXTURE_WRAP_S',
++  10243: 'TEXTURE_WRAP_T',
++  10497: 'REPEAT',
++  10752: 'POLYGON_OFFSET_UNITS',
++  16384: 'COLOR_BUFFER_BIT',
++  32769: 'CONSTANT_COLOR',
++  32770: 'ONE_MINUS_CONSTANT_COLOR',
++  32771: 'CONSTANT_ALPHA',
++  32772: 'ONE_MINUS_CONSTANT_ALPHA',
++  32773: 'BLEND_COLOR',
++  32774: 'FUNC_ADD',
++  32777: 'BLEND_EQUATION_RGB',
++  32778: 'FUNC_SUBTRACT',
++  32779: 'FUNC_REVERSE_SUBTRACT',
++  32819: 'UNSIGNED_SHORT_4_4_4_4',
++  32820: 'UNSIGNED_SHORT_5_5_5_1',
++  32823: 'POLYGON_OFFSET_FILL',
++  32824: 'POLYGON_OFFSET_FACTOR',
++  32854: 'RGBA4',
++  32855: 'RGB5_A1',
++  32873: 'TEXTURE_BINDING_2D',
++  32926: 'SAMPLE_ALPHA_TO_COVERAGE',
++  32928: 'SAMPLE_COVERAGE',
++  32936: 'SAMPLE_BUFFERS',
++  32937: 'SAMPLES',
++  32938: 'SAMPLE_COVERAGE_VALUE',
++  32939: 'SAMPLE_COVERAGE_INVERT',
++  32968: 'BLEND_DST_RGB',
++  32969: 'BLEND_SRC_RGB',
++  32970: 'BLEND_DST_ALPHA',
++  32971: 'BLEND_SRC_ALPHA',
++  33071: 'CLAMP_TO_EDGE',
++  33170: 'GENERATE_MIPMAP_HINT',
++  33189: 'DEPTH_COMPONENT16',
++  33306: 'DEPTH_STENCIL_ATTACHMENT',
++  33635: 'UNSIGNED_SHORT_5_6_5',
++  33648: 'MIRRORED_REPEAT',
++  33901: 'ALIASED_POINT_SIZE_RANGE',
++  33902: 'ALIASED_LINE_WIDTH_RANGE',
++  33984: 'TEXTURE0',
++  33985: 'TEXTURE1',
++  33986: 'TEXTURE2',
++  33987: 'TEXTURE3',
++  33988: 'TEXTURE4',
++  33989: 'TEXTURE5',
++  33990: 'TEXTURE6',
++  33991: 'TEXTURE7',
++  33992: 'TEXTURE8',
++  33993: 'TEXTURE9',
++  33994: 'TEXTURE10',
++  33995: 'TEXTURE11',
++  33996: 'TEXTURE12',
++  33997: 'TEXTURE13',
++  33998: 'TEXTURE14',
++  33999: 'TEXTURE15',
++  34000: 'TEXTURE16',
++  34001: 'TEXTURE17',
++  34002: 'TEXTURE18',
++  34003: 'TEXTURE19',
++  34004: 'TEXTURE20',
++  34005: 'TEXTURE21',
++  34006: 'TEXTURE22',
++  34007: 'TEXTURE23',
++  34008: 'TEXTURE24',
++  34009: 'TEXTURE25',
++  34010: 'TEXTURE26',
++  34011: 'TEXTURE27',
++  34012: 'TEXTURE28',
++  34013: 'TEXTURE29',
++  34014: 'TEXTURE30',
++  34015: 'TEXTURE31',
++  34016: 'ACTIVE_TEXTURE',
++  34024: 'MAX_RENDERBUFFER_SIZE',
++  34041: 'DEPTH_STENCIL',
++  34055: 'INCR_WRAP',
++  34056: 'DECR_WRAP',
++  34067: 'TEXTURE_CUBE_MAP',
++  34068: 'TEXTURE_BINDING_CUBE_MAP',
++  34069: 'TEXTURE_CUBE_MAP_POSITIVE_X',
++  34070: 'TEXTURE_CUBE_MAP_NEGATIVE_X',
++  34071: 'TEXTURE_CUBE_MAP_POSITIVE_Y',
++  34072: 'TEXTURE_CUBE_MAP_NEGATIVE_Y',
++  34073: 'TEXTURE_CUBE_MAP_POSITIVE_Z',
++  34074: 'TEXTURE_CUBE_MAP_NEGATIVE_Z',
++  34076: 'MAX_CUBE_MAP_TEXTURE_SIZE',
++  34338: 'VERTEX_ATTRIB_ARRAY_ENABLED',
++  34339: 'VERTEX_ATTRIB_ARRAY_SIZE',
++  34340: 'VERTEX_ATTRIB_ARRAY_STRIDE',
++  34341: 'VERTEX_ATTRIB_ARRAY_TYPE',
++  34342: 'CURRENT_VERTEX_ATTRIB',
++  34373: 'VERTEX_ATTRIB_ARRAY_POINTER',
++  34466: 'NUM_COMPRESSED_TEXTURE_FORMATS',
++  34467: 'COMPRESSED_TEXTURE_FORMATS',
++  34660: 'BUFFER_SIZE',
++  34661: 'BUFFER_USAGE',
++  34816: 'STENCIL_BACK_FUNC',
++  34817: 'STENCIL_BACK_FAIL',
++  34818: 'STENCIL_BACK_PASS_DEPTH_FAIL',
++  34819: 'STENCIL_BACK_PASS_DEPTH_PASS',
++  34877: 'BLEND_EQUATION_ALPHA',
++  34921: 'MAX_VERTEX_ATTRIBS',
++  34922: 'VERTEX_ATTRIB_ARRAY_NORMALIZED',
++  34930: 'MAX_TEXTURE_IMAGE_UNITS',
++  34962: 'ARRAY_BUFFER',
++  34963: 'ELEMENT_ARRAY_BUFFER',
++  34964: 'ARRAY_BUFFER_BINDING',
++  34965: 'ELEMENT_ARRAY_BUFFER_BINDING',
++  34975: 'VERTEX_ATTRIB_ARRAY_BUFFER_BINDING',
++  35040: 'STREAM_DRAW',
++  35044: 'STATIC_DRAW',
++  35048: 'DYNAMIC_DRAW',
++  35632: 'FRAGMENT_SHADER',
++  35633: 'VERTEX_SHADER',
++  35660: 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
++  35661: 'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
++  35663: 'SHADER_TYPE',
++  35664: 'FLOAT_VEC2',
++  35665: 'FLOAT_VEC3',
++  35666: 'FLOAT_VEC4',
++  35667: 'INT_VEC2',
++  35668: 'INT_VEC3',
++  35669: 'INT_VEC4',
++  35670: 'BOOL',
++  35671: 'BOOL_VEC2',
++  35672: 'BOOL_VEC3',
++  35673: 'BOOL_VEC4',
++  35674: 'FLOAT_MAT2',
++  35675: 'FLOAT_MAT3',
++  35676: 'FLOAT_MAT4',
++  35678: 'SAMPLER_2D',
++  35680: 'SAMPLER_CUBE',
++  35712: 'DELETE_STATUS',
++  35713: 'COMPILE_STATUS',
++  35714: 'LINK_STATUS',
++  35715: 'VALIDATE_STATUS',
++  35716: 'INFO_LOG_LENGTH',
++  35717: 'ATTACHED_SHADERS',
++  35718: 'ACTIVE_UNIFORMS',
++  35719: 'ACTIVE_UNIFORM_MAX_LENGTH',
++  35720: 'SHADER_SOURCE_LENGTH',
++  35721: 'ACTIVE_ATTRIBUTES',
++  35722: 'ACTIVE_ATTRIBUTE_MAX_LENGTH',
++  35724: 'SHADING_LANGUAGE_VERSION',
++  35725: 'CURRENT_PROGRAM',
++  36003: 'STENCIL_BACK_REF',
++  36004: 'STENCIL_BACK_VALUE_MASK',
++  36005: 'STENCIL_BACK_WRITEMASK',
++  36006: 'FRAMEBUFFER_BINDING',
++  36007: 'RENDERBUFFER_BINDING',
++  36048: 'FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE',
++  36049: 'FRAMEBUFFER_ATTACHMENT_OBJECT_NAME',
++  36050: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL',
++  36051: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
++  36053: 'FRAMEBUFFER_COMPLETE',
++  36054: 'FRAMEBUFFER_INCOMPLETE_ATTACHMENT',
++  36055: 'FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT',
++  36057: 'FRAMEBUFFER_INCOMPLETE_DIMENSIONS',
++  36061: 'FRAMEBUFFER_UNSUPPORTED',
++  36064: 'COLOR_ATTACHMENT0',
++  36096: 'DEPTH_ATTACHMENT',
++  36128: 'STENCIL_ATTACHMENT',
++  36160: 'FRAMEBUFFER',
++  36161: 'RENDERBUFFER',
++  36162: 'RENDERBUFFER_WIDTH',
++  36163: 'RENDERBUFFER_HEIGHT',
++  36164: 'RENDERBUFFER_INTERNAL_FORMAT',
++  36168: 'STENCIL_INDEX8',
++  36176: 'RENDERBUFFER_RED_SIZE',
++  36177: 'RENDERBUFFER_GREEN_SIZE',
++  36178: 'RENDERBUFFER_BLUE_SIZE',
++  36179: 'RENDERBUFFER_ALPHA_SIZE',
++  36180: 'RENDERBUFFER_DEPTH_SIZE',
++  36181: 'RENDERBUFFER_STENCIL_SIZE',
++  36194: 'RGB565',
++  36336: 'LOW_FLOAT',
++  36337: 'MEDIUM_FLOAT',
++  36338: 'HIGH_FLOAT',
++  36339: 'LOW_INT',
++  36340: 'MEDIUM_INT',
++  36341: 'HIGH_INT',
++  36346: 'SHADER_COMPILER',
++  36347: 'MAX_VERTEX_UNIFORM_VECTORS',
++  36348: 'MAX_VARYING_VECTORS',
++  36349: 'MAX_FRAGMENT_UNIFORM_VECTORS',
++  37440: 'UNPACK_FLIP_Y_WEBGL',
++  37441: 'UNPACK_PREMULTIPLY_ALPHA_WEBGL',
++  37442: 'CONTEXT_LOST_WEBGL',
++  37443: 'UNPACK_COLORSPACE_CONVERSION_WEBGL',
++  37444: 'BROWSER_DEFAULT_WEBGL'
++}
++
++},{}],65:[function(require,module,exports){
++var gl10 = require('./1.0/numbers')
++
++module.exports = function lookupConstant (number) {
++  return gl10[number]
+ }
+ 
+-},{"gl-texture2d":115}],73:[function(require,module,exports){
++},{"./1.0/numbers":64}],66:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createHeatmap2D
++module.exports = createContour2D
+ 
+-var bsearch = require('binary-search-bounds')
+ var iota = require('iota-array')
+-var pool = require('typedarray-pool')
+ var createShader = require('gl-shader')
+ var createBuffer = require('gl-buffer')
++var ndarray = require('ndarray')
++var surfaceNets = require('surface-nets')
++var cdt2d = require('cdt2d')
++var cleanPSLG = require('clean-pslg')
++var bsearch = require('binary-search-bounds')
+ 
+ var shaders = require('./lib/shaders')
+ 
+-function GLHeatmap2D(
++function GLContour2D (
+   plot,
+   shader,
++  fillShader,
+   pickShader,
+   positionBuffer,
+   colorBuffer,
+-  idBuffer) {
+-  this.plot           = plot
+-  this.shader         = shader
+-  this.pickShader     = pickShader
++  idBuffer,
++  fillPositionBuffer,
++  fillColorBuffer) {
++  this.plot = plot
++  this.shader = shader
++  this.fillShader = fillShader
++  this.pickShader = pickShader
+   this.positionBuffer = positionBuffer
+-  this.colorBuffer    = colorBuffer
+-  this.idBuffer       = idBuffer
+-  this.xData          = []
+-  this.yData          = []
+-  this.shape          = [0,0]
+-  this.bounds         = [Infinity, Infinity, -Infinity, -Infinity]
+-  this.pickOffset     = 0
++  this.colorBuffer = colorBuffer
++  this.idBuffer = idBuffer
++  this.fillPositionBuffer = fillPositionBuffer
++  this.fillColorBuffer = fillColorBuffer
++  this.fillVerts = 0
++  this.xData = []
++  this.yData = []
++  this.shape = [0, 0]
++  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
++  this.pickOffset = 0
++  this.numVertices = 0
++  this.lineWidth = 1
+ }
+ 
+-var proto = GLHeatmap2D.prototype
++var proto = GLContour2D.prototype
+ 
+ var WEIGHTS = [
+-  0, 0,
+   1, 0,
++  0, 0,
+   0, 1,
+   1, 0,
+   1, 1,
+   0, 1
+ ]
+ 
+-proto.draw = (function() {
++proto.draw = (function () {
+   var MATRIX = [
+     1, 0, 0,
+     0, 1, 0,
+     0, 0, 1
+   ]
+ 
+-  return function() {
+-    var plot          = this.plot
+-    var shader        = this.shader
+-    var bounds        = this.bounds
+-    var numVertices   = this.numVertices
++  var SCREEN_SHAPE = [0, 0]
+ 
+-    var gl            = plot.gl
+-    var viewBox       = plot.viewBox
+-    var dataBox       = plot.dataBox
++  return function () {
++    var plot = this.plot
++    var shader = this.shader
++    var fillShader = this.fillShader
++    var bounds = this.bounds
++    var numVertices = this.numVertices
++    var fillVerts = this.fillVerts
+ 
+-    var boundX  = bounds[2]  - bounds[0]
+-    var boundY  = bounds[3]  - bounds[1]
+-    var dataX   = dataBox[2] - dataBox[0]
+-    var dataY   = dataBox[3] - dataBox[1]
++    var uniforms, attributes
++
++    var gl = plot.gl
++    var viewBox = plot.viewBox
++    var dataBox = plot.dataBox
++
++    var boundX = bounds[2] - bounds[0]
++    var boundY = bounds[3] - bounds[1]
++    var dataX = dataBox[2] - dataBox[0]
++    var dataY = dataBox[3] - dataBox[1]
+ 
+     MATRIX[0] = 2.0 * boundX / dataX
+     MATRIX[4] = 2.0 * boundY / dataY
+     MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+     MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-    shader.bind()
+-
+-    var uniforms = shader.uniforms
+-    uniforms.viewTransform = MATRIX
+-
+-    var attributes = shader.attributes
+-    this.positionBuffer.bind()
+-    attributes.position.pointer()
++    SCREEN_SHAPE[0] = viewBox[2] - viewBox[0]
++    SCREEN_SHAPE[1] = viewBox[3] - viewBox[1]
+ 
+-    this.colorBuffer.bind()
+-    attributes.color.pointer(gl.UNSIGNED_BYTE, true)
++    if (fillVerts > 0) {
++      fillShader.bind()
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, this.numVertices)
+-  }
+-})()
++      uniforms = fillShader.uniforms
++      uniforms.viewTransform = MATRIX
++      uniforms.screenShape = SCREEN_SHAPE
+ 
+-proto.drawPick = (function() {
+-  var MATRIX = [
+-    1, 0, 0,
+-    0, 1, 0,
+-    0, 0, 1
+-  ]
++      attributes = shader.attributes
++      this.fillPositionBuffer.bind()
++      attributes.position.pointer()
+ 
+-  var PICK_VECTOR = [0,0,0,0]
++      this.fillColorBuffer.bind()
++      attributes.color.pointer(gl.UNSIGNED_BYTE, true)
+ 
+-  return function(pickOffset) {
+-    var plot          = this.plot
+-    var shader        = this.pickShader
+-    var bounds        = this.bounds
+-    var numVertices   = this.numVertices
++      gl.drawArrays(gl.TRIANGLES, 0, fillVerts)
++    }
+ 
+-    var gl            = plot.gl
+-    var viewBox       = plot.viewBox
+-    var dataBox       = plot.dataBox
++    if (numVertices > 0) {
++      shader.bind()
+ 
+-    var boundX  = bounds[2]  - bounds[0]
+-    var boundY  = bounds[3]  - bounds[1]
+-    var dataX   = dataBox[2] - dataBox[0]
+-    var dataY   = dataBox[3] - dataBox[1]
++      var lineWidth = this.lineWidth * plot.pixelRatio
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++      uniforms = shader.uniforms
++      uniforms.viewTransform = MATRIX
++      uniforms.screenShape = SCREEN_SHAPE
++      uniforms.lineWidth = lineWidth
++      uniforms.pointSize = 1000
+ 
+-    for(var i=0; i<4; ++i) {
+-      PICK_VECTOR[i] = (pickOffset>>(i*8)) & 0xff
+-    }
++      attributes = shader.attributes
+ 
+-    this.pickOffset = pickOffset
++      // Draw lines
++      this.positionBuffer.bind()
++      attributes.position.pointer(gl.FLOAT, false, 16, 0)
++      attributes.tangent.pointer(gl.FLOAT, false, 16, 8)
+ 
+-    shader.bind()
++      this.colorBuffer.bind()
++      attributes.color.pointer(gl.UNSIGNED_BYTE, true)
+ 
+-    var uniforms = shader.uniforms
+-    uniforms.viewTransform = MATRIX
+-    uniforms.pickOffset    = PICK_VECTOR
++      gl.drawArrays(gl.TRIANGLES, 0, numVertices)
+ 
+-    var attributes = shader.attributes
+-    this.positionBuffer.bind()
+-    attributes.position.pointer()
++      // Draw end caps
++      uniforms.lineWidth = 0
++      uniforms.pointSize = lineWidth
+ 
+-    this.idBuffer.bind()
+-    attributes.pickId.pointer(gl.UNSIGNED_BYTE, false)
++      this.positionBuffer.bind()
++      attributes.position.pointer(gl.FLOAT, false, 16 * 3, 0)
++      attributes.tangent.pointer(gl.FLOAT, false, 16 * 3, 8)
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, this.numVertices)
++      this.colorBuffer.bind()
++      attributes.color.pointer(gl.UNSIGNED_BYTE, true, 4 * 3, 0)
+ 
+-    return pickOffset + this.shape[0] * this.shape[1]
++      gl.drawArrays(gl.POINTS, 0, numVertices / 3)
++    }
+   }
+ })()
+ 
+-proto.pick = function(x, y, value) {
+-  var pickOffset = this.pickOffset
+-  var pointCount = this.shape[0] * this.shape[1]
+-  if(value < pickOffset || value >= pickOffset + pointCount) {
+-    return null
++proto.drawPick = (function () {
++  return function (pickOffset) {
++    return pickOffset
+   }
+-  var pointId = value - pickOffset
+-  var xData = this.xData
+-  var yData = this.yData
+-  return {
+-    object:     this,
+-    pointId:    pointId,
+-    dataCoord: [
+-          xData[pointId%this.shape[0]],
+-          yData[(pointId/this.shape[0])|0] ]
++})()
++
++proto.pick = function (x, y, value) {
++  return null
++}
++
++function interpolate (array, point) {
++  var idx = Math.floor(point)
++  if (idx < 0) {
++    return array[0]
++  } else if (idx >= array.length - 1) {
++    return array[array.length - 1]
+   }
++  var t = point - idx
++  return (1.0 - t) * array[idx] + t * array[idx + 1]
+ }
+ 
+-proto.update = function(options) {
++proto.update = function (options) {
+   options = options || {}
+ 
+-  var shape = options.shape || [0,0]
++  var shape = options.shape || [0, 0]
+ 
+   var x = options.x || iota(shape[0])
+   var y = options.y || iota(shape[1])
+   var z = options.z || new Float32Array(shape[0] * shape[1])
+ 
+-  this.xData = x
+-  this.yData = y
+-
+-  var colorLevels = options.colorLevels || [0]
+-  var colorValues = options.colorValues || [0, 0, 0, 1]
+-  var colorCount  = colorLevels.length
++  var levels = options.levels || []
++  var levelColors = options.levelColors || []
+ 
+   var bounds = this.bounds
+   var lox = bounds[0] = x[0]
+   var loy = bounds[1] = y[0]
+-  var hix = bounds[2] = x[x.length-1]
+-  var hiy = bounds[3] = y[y.length-1]
++  var hix = bounds[2] = x[x.length - 1]
++  var hiy = bounds[3] = y[y.length - 1]
++
++  if (lox === hix) {
++    bounds[2] += 1
++    hix += 1
++  }
++  if (loy === hiy) {
++    bounds[3] += 1
++    hiy += 1
++  }
+ 
+   var xs = 1.0 / (hix - lox)
+   var ys = 1.0 / (hiy - loy)
+ 
+-  var numVerts  = shape[0] * shape[1] * (WEIGHTS.length>>>1)
++  this.xData = x
++  this.yData = y
+ 
+-  this.numVertices = numVerts
++  this.lineWidth = options.lineWidth || 1
+ 
+-  var colors    = pool.mallocUint8  (numVerts * 4)
+-  var positions = pool.mallocFloat32(numVerts * 2)
+-  var ids       = pool.mallocUint32 (numVerts)
++  var zarray = ndarray(z, shape)
+ 
+-  var numX = shape[0]
+-  var numY = shape[1]
++  var positions = []
++  var colors = []
++  var ids = []
+ 
+-  this.shape = [numX, numY]
++  var fillCells = []
++  var fillPositions = [
++    [0, 0],
++    [shape[0] - 1, 0],
++    [0, shape[1] - 1],
++    [shape[0] - 1, shape[1] - 1]
++  ]
+ 
+-  var ptr = 0
++  function intersect (level, x, a, b) {
++    var d = (b - a)
++    if (Math.abs(d) < 1e-6) {
++      return x
++    }
++    return Math.floor(x) + Math.max(0.001, Math.min(0.999, (level - a) / d))
++  }
+ 
+-  for(var j=0; j<numY-1; ++j) {
+-    var yc0 = ys * (y[j] - loy)
+-    var yc1 = ys * (y[j+1] - loy)
+-    for(var i=0; i<numX-1; ++i) {
+-      var xc0 = xs * (x[i] - lox)
+-      var xc1 = xs * (x[i+1] - lox)
++  for (var i = 0; i < levels.length; ++i) {
++    var level = levels[i]
++    if (i > 0 && level === levels[i - 1]) {
++      continue
++    }
++    var contour = surfaceNets(zarray, level)
+ 
+-      for(var dd=0; dd<WEIGHTS.length; dd+=2) {
+-        var dx = WEIGHTS[dd]
+-        var dy = WEIGHTS[dd+1]
+-        var offset = (j+dy)*numX + (i+dx)
+-        var zc = z[offset]
+-        var colorIdx = bsearch.le(colorLevels, zc)
+-        var r, g, b, a
+-        if(colorIdx < 0) {
+-          r = colorValues[0]
+-          g = colorValues[1]
+-          b = colorValues[2]
+-          a = colorValues[3]
+-        } else if(colorIdx === colorCount-1) {
+-          r = colorValues[4*colorCount-4]
+-          g = colorValues[4*colorCount-3]
+-          b = colorValues[4*colorCount-2]
+-          a = colorValues[4*colorCount-1]
+-        } else {
+-          var t = (zc - colorLevels[colorIdx]) /
+-            (colorLevels[colorIdx+1] - colorLevels[colorIdx])
+-          var ti = 1.0 - t
+-          var i0 = 4*colorIdx
+-          var i1 = 4*(colorIdx+1)
+-          r = ti*colorValues[i0]   + t*colorValues[i1]
+-          g = ti*colorValues[i0+1] + t*colorValues[i1+1]
+-          b = ti*colorValues[i0+2] + t*colorValues[i1+2]
+-          a = ti*colorValues[i0+3] + t*colorValues[i1+3]
+-        }
++    var c_r = (255 * levelColors[4 * i]) | 0
++    var c_g = (255 * levelColors[4 * i + 1]) | 0
++    var c_b = (255 * levelColors[4 * i + 2]) | 0
++    var c_a = (255 * levelColors[4 * i + 3]) | 0
++
++    var c_cells = contour.cells
++    var c_positions = contour.positions
++
++    // Fix boundaries
++    var in_degree = Array(c_positions.length)
++    for (var j = 0; j < in_degree.length; ++j) {
++      in_degree[j] = 0
++    }
++    for (j = 0; j < c_cells.length; ++j) {
++      var edge = c_cells[j]
++      in_degree[edge[0]] += 1
++      in_degree[edge[1]] += 1
++    }
++
++    for (j = 0; j < in_degree.length; ++j) {
++      var deg = in_degree[j]
++      if (deg === 0) {
++        continue
++      }
++      var pp = c_positions[j]
++      in_degree[j] = fillPositions.length
++      fillPositions.push(pp)
++      if (deg > 1) {
++        continue
++      }
++      var ppx = pp[0]
++      var ppy = pp[1]
++      var z00 = zarray.get(Math.floor(ppx), Math.floor(ppy))
++      var z01 = zarray.get(Math.floor(ppx), Math.ceil(ppy))
++      var z10 = zarray.get(Math.ceil(ppx), Math.floor(ppy))
++      var z11 = zarray.get(Math.ceil(ppx), Math.ceil(ppy))
++      var intercept
++      if (Math.floor(pp[0]) === 0 &&
++          ((z00 <= level) !== (z01 < level))) {
++        intercept = [0, intersect(level, pp[1], z00, z01)]
++      } else if (Math.ceil(pp[0]) === shape[0] - 1 &&
++          ((z10 <= level) !== (z11 < level))) {
++        intercept = [shape[0] - 1, intersect(level, pp[1], z10, z11)]
++      } else if (Math.floor(pp[1]) === 0 &&
++          ((z00 <= level) !== (z10 < level))) {
++        intercept = [intersect(level, pp[0], z00, z10), 0]
++      } else if (Math.ceil(pp[1]) === shape[1] - 1 &&
++          ((z01 <= level) !== (z11 < level))) {
++        intercept = [intersect(level, pp[0], z01, z11), shape[1] - 1]
++      }
++      if (intercept) {
++        c_cells.push([j, c_positions.length])
++        in_degree.push(fillPositions.length)
++        c_positions.push(intercept)
++      }
++    }
++
++    for (j = 0; j < c_cells.length; ++j) {
++      var e = c_cells[j]
++      var a = c_positions[e[0]]
++      var b = c_positions[e[1]]
++
++      fillCells.push([in_degree[e[0]], in_degree[e[1]]])
++
++      var pointId = Math.round(a[0]) + shape[0] * Math.round(a[1])
++
++      var ax = interpolate(x, a[0])
++      var ay = interpolate(y, a[1])
++      var bx = interpolate(x, b[0])
++      var by = interpolate(y, b[1])
++
++      ax = xs * (ax - lox)
++      ay = ys * (ay - loy)
++      bx = xs * (bx - lox)
++      by = ys * (by - loy)
++
++      var dx = ax - bx
++      var dy = ay - by
++
++      for (var k = 0; k < WEIGHTS.length; k += 2) {
++        var wx = WEIGHTS[k]
++        var wix = 1.0 - wx
++        var wy = 2.0 * WEIGHTS[k + 1] - 1.0
++
++        positions.push(
++          wix * ax + wx * bx, wix * ay + wx * by,
++          wy * dx, wy * dy)
++        colors.push(c_r, c_g, c_b, c_a)
++        ids.push(pointId)
++      }
++    }
++  }
++
++  this.positionBuffer.update(new Float32Array(positions))
++  this.colorBuffer.update(new Uint8Array(colors))
++  this.idBuffer.update(new Uint32Array(ids))
++  this.numVertices = ids.length
++
++  var fillColors = options.fillColors
++  var fillCellColors = []
++  var fillCellPositions = []
++  var fillVerts = 0
++
++  if (fillColors) {
++    cleanPSLG(fillPositions, fillCells)
++    var fillMesh = cdt2d(fillPositions, fillCells, {
++      delaunay: false
++    })
++    for (i = 0; i < fillMesh.length; ++i) {
++      var cell = fillMesh[i]
++      var cx = 0
++      var cy = 0
++
++      for (j = 0; j < 3; ++j) {
++        var p = fillPositions[cell[j]]
++        var px = interpolate(x, p[0])
++        var py = interpolate(y, p[1])
++        cx += p[0]
++        cy += p[1]
++        fillCellPositions.push(
++          xs * (px - lox),
++          ys * (py - loy))
++      }
++
++      // Compute centroid of triangle
++      cx /= 3
++      cy /= 3
++
++      // Sample height field at triangle centroid
++      var cxi = Math.floor(cx)
++      var cyi = Math.floor(cy)
++      var cxf = cx - cxi
++      var cyf = cy - cyi
++
++      var c00 = zarray.get(cxi, cyi)
++      var c01 = zarray.get(cxi, cyi + 1)
++      var c10 = zarray.get(cxi + 1, cyi)
++      var c11 = zarray.get(cxi + 1, cyi + 1)
++
++      var zlevel =
++        (1 - cyf) * ((1 - cxf) * c00 + cxf * c10) +
++        cyf * ((1 - cxf) * c01 + cxf * c11)
++
++      // Color triangle using centroid data
++      var l = bsearch.le(levels, zlevel) + 1
++      var cr = (255 * fillColors[4 * l + 0]) | 0
++      var cg = (255 * fillColors[4 * l + 1]) | 0
++      var cb = (255 * fillColors[4 * l + 2]) | 0
++      var ca = (255 * fillColors[4 * l + 3]) | 0
++
++      fillCellColors.push(
++        cr, cg, cb, ca,
++        cr, cg, cb, ca,
++        cr, cg, cb, ca)
++
++      fillVerts += 3
++    }
++
++    this.fillPositionBuffer.update(new Float32Array(fillCellPositions))
++    this.fillColorBuffer.update(new Uint8Array(fillCellColors))
++
++    this.fillVerts = fillVerts
++  }
++}
++
++proto.dispose = function () {
++  this.plot.removeObject(this)
++}
++
++function createContour2D (plot, options) {
++  var gl = plot.gl
++
++  var shader = createShader(gl, shaders.vertex, shaders.fragment)
++  var pickShader = createShader(gl, shaders.pickVertex, shaders.pickFragment)
++  var fillShader = createShader(gl, shaders.fillVertex, shaders.fragment)
++
++  var positionBuffer = createBuffer(gl)
++  var colorBuffer = createBuffer(gl)
++  var idBuffer = createBuffer(gl)
++
++  var fillPositionBuffer = createBuffer(gl)
++  var fillColorBuffer = createBuffer(gl)
++
++  var contours = new GLContour2D(
++    plot,
++    shader,
++    fillShader,
++    pickShader,
++    positionBuffer,
++    colorBuffer,
++    idBuffer,
++    fillPositionBuffer,
++    fillColorBuffer)
++
++  contours.update(options)
++  plot.addObject(contours)
++
++  return contours
++}
++
++},{"./lib/shaders":67,"binary-search-bounds":68,"cdt2d":40,"clean-pslg":46,"gl-buffer":63,"gl-shader":96,"iota-array":116,"ndarray":123,"surface-nets":155}],67:[function(require,module,exports){
++'use strict'
++
++
++
++module.exports = {
++  fragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
++  vertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 tangent;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 screenShape;\nuniform float lineWidth;\nuniform float pointSize;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  fragColor = color;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  vec2 vTangent = normalize(viewTransform * vec3(tangent, 0)).xy;\n  vec2 offset = vec2(vTangent.y, -vTangent.x) / screenShape;\n\n  gl_Position = vec4(\n    vPosition.xy + offset * lineWidth * vPosition.z,\n    0,\n    vPosition.z);\n\n  gl_PointSize = pointSize;\n}\n",
++  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragId;\nvoid main() {\n  gl_FragColor = fragId;\n}\n",
++  pickVertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 viewTransform;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id / 255.0;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n",
++  fillVertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  fragColor = color;\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n"
++}
++
++},{}],68:[function(require,module,exports){
++arguments[4][45][0].apply(exports,arguments)
++},{"dup":45}],69:[function(require,module,exports){
++'use strict'
++
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var pool = require('typedarray-pool')
++var shaders = require('./lib/shaders')
++
++module.exports = createError2D
++
++var WEIGHTS = [
++  // x-error bar
++  [1, 0, 0, 1, 0, 0],
++  [1, 0, 0, -1, 0, 0],
++  [-1, 0, 0, -1, 0, 0],
++
++  [-1, 0, 0, -1, 0, 0],
++  [-1, 0, 0, 1, 0, 0],
++  [1, 0, 0, 1, 0, 0],
++
++  // x-error right cap
++  [1, 0, -1, 0, 0, 1],
++  [1, 0, -1, 0, 0, -1],
++  [1, 0, 1, 0, 0, -1],
++
++  [1, 0, 1, 0, 0, -1],
++  [1, 0, 1, 0, 0, 1],
++  [1, 0, -1, 0, 0, 1],
++
++  // x-error left cap
++  [-1, 0, -1, 0, 0, 1],
++  [-1, 0, -1, 0, 0, -1],
++  [-1, 0, 1, 0, 0, -1],
++
++  [-1, 0, 1, 0, 0, -1],
++  [-1, 0, 1, 0, 0, 1],
++  [-1, 0, -1, 0, 0, 1],
++
++  // y-error bar
++  [0, 1, 1, 0, 0, 0],
++  [0, 1, -1, 0, 0, 0],
++  [0, -1, -1, 0, 0, 0],
+ 
+-        colors[4*ptr]      = 255*r
+-        colors[4*ptr+1]    = 255*g
+-        colors[4*ptr+2]    = 255*b
+-        colors[4*ptr+3]    = 255*a
++  [0, -1, -1, 0, 0, 0],
++  [0, 1, 1, 0, 0, 0],
++  [0, -1, 1, 0, 0, 0],
+ 
+-        positions[2*ptr]   = (1 - dx) * xc0 + dx * xc1
+-        positions[2*ptr+1] = (1 - dy) * yc0 + dy * yc1
++  // y-error top cap
++  [0, 1, 0, -1, 1, 0],
++  [0, 1, 0, -1, -1, 0],
++  [0, 1, 0, 1, -1, 0],
+ 
+-        ids[ptr] = j*numX + i
++  [0, 1, 0, 1, 1, 0],
++  [0, 1, 0, -1, 1, 0],
++  [0, 1, 0, 1, -1, 0],
+ 
+-        ptr += 1
+-      }
+-    }
+-  }
++  // y-error bottom cap
++  [0, -1, 0, -1, 1, 0],
++  [0, -1, 0, -1, -1, 0],
++  [0, -1, 0, 1, -1, 0],
+ 
+-  this.positionBuffer.update(positions)
+-  this.colorBuffer.   update(colors)
+-  this.idBuffer.      update(ids)
++  [0, -1, 0, 1, 1, 0],
++  [0, -1, 0, -1, 1, 0],
++  [0, -1, 0, 1, -1, 0]
++]
+ 
+-  pool.free(positions)
+-  pool.free(colors)
+-  pool.free(ids)
+-}
++function GLError2D (plot, shader, buffer) {
++  this.plot = plot
+ 
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.pickShader.dispose()
+-  this.positionBuffer.dispose()
+-  this.colorBuffer.dispose()
+-  this.idBuffer.dispose()
+-  this.plot.removeObject(this)
+-}
++  this.shader = shader
++  this.buffer = buffer
+ 
+-function createHeatmap2D(plot, options) {
+-  var gl = plot.gl
++  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
+ 
+-  var shader     = createShader(gl, shaders.vertex, shaders.fragment)
+-  var pickShader = createShader(gl, shaders.pickVertex, shaders.pickFragment)
++  this.numPoints = 0
+ 
+-  var positionBuffer = createBuffer(gl)
+-  var colorBuffer    = createBuffer(gl)
+-  var idBuffer       = createBuffer(gl)
++  this.color = [0, 0, 0, 1]
++}
+ 
+-  var heatmap = new GLHeatmap2D(
+-    plot,
+-    shader,
+-    pickShader,
+-    positionBuffer,
+-    colorBuffer,
+-    idBuffer)
++var proto = GLError2D.prototype
+ 
+-  heatmap.update(options)
+-  plot.addObject(heatmap)
++proto.draw = (function () {
++  var MATRIX = [
++    1, 0, 0,
++    0, 1, 0,
++    0, 0, 1
++  ]
+ 
+-  return heatmap
+-}
++  var PIXEL_SCALE = [1, 1]
+ 
+-},{"./lib/shaders":74,"binary-search-bounds":75,"gl-buffer":66,"gl-shader":96,"iota-array":123,"typedarray-pool":151}],74:[function(require,module,exports){
+-'use strict'
++  return function () {
++    var plot = this.plot
++    var shader = this.shader
++    var buffer = this.buffer
++    var bounds = this.bounds
++    var numPoints = this.numPoints
+ 
++    if (!numPoints) {
++      return
++    }
+ 
++    var gl = plot.gl
++    var dataBox = plot.dataBox
++    var viewBox = plot.viewBox
++    var pixelRatio = plot.pixelRatio
+ 
+-module.exports = {
+-  fragment:     "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
+-  vertex:       "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  fragColor = color;\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n",
+-  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragId;\nvoid main() {\n  gl_FragColor = fragId;\n}\n",
+-  pickVertex:   "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 viewTransform;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id / 255.0;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n"
+-}
++    var boundX = bounds[2] - bounds[0]
++    var boundY = bounds[3] - bounds[1]
++    var dataX = dataBox[2] - dataBox[0]
++    var dataY = dataBox[3] - dataBox[1]
+ 
+-},{}],75:[function(require,module,exports){
+-arguments[4][21][0].apply(exports,arguments)
+-},{"dup":21}],76:[function(require,module,exports){
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
++    var screenX = viewBox[2] - viewBox[0]
++    var screenY = viewBox[3] - viewBox[1]
+ 
+-exports.lineVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\nvoid main() {\n  vec2 dir = (matrix * vec3(d, 0)).xy;\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = 0.5 * width *\n    normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n}\n"
+-exports.lineFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}\n"
+-exports.mitreVertex   = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 p;\n\nuniform mat3  matrix;\nuniform vec2 screenShape;\nuniform float radius;\n\nvoid main() {\n  vec3 pp = matrix * vec3(p, 1);\n  gl_Position  = vec4(pp.xy, 0, pp.z);\n  gl_PointSize = radius;\n}\n"
+-exports.mitreFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}\n"
+-exports.pickVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\nattribute vec4 pick0, pick1;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = width *\n    normalize(screenShape.yx * vec2(d.y, -d.x)) / screenShape.xy;\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}\n"
+-exports.pickFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}\n"
+-exports.fillVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 projectAxis;\nuniform float projectValue;\nuniform float depth;\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 p = base.xy / base.z;\n  if(d.y < 0.0 || (d.y == 0.0 && d.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}\n"
+-exports.fillFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
++    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
++    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
+ 
+-},{}],77:[function(require,module,exports){
+-'use strict'
++    buffer.bind()
++    shader.bind()
+ 
+-module.exports = createLinePlot
++    shader.uniforms.viewTransform = MATRIX
++    shader.uniforms.pixelScale = PIXEL_SCALE
++    shader.uniforms.color = this.color
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var createTexture = require('gl-texture2d')
+-var ndarray = require('ndarray')
+-var pool = require('typedarray-pool')
++    shader.attributes.position.pointer(
++      gl.FLOAT,
++      false,
++      16,
++      0)
+ 
+-var SHADERS = require('./lib/shaders')
++    shader.attributes.pixelOffset.pointer(
++      gl.FLOAT,
++      false,
++      16,
++      8)
+ 
+-function GLLine2D(
+-  plot,
+-  dashPattern,
+-  lineBuffer,
+-  pickBuffer,
+-  lineShader,
+-  mitreShader,
+-  fillShader,
+-  pickShader) {
++    gl.drawArrays(gl.TRIANGLES, 0, numPoints * WEIGHTS.length)
++  }
++})()
+ 
+-  this.plot         = plot
+-  this.dashPattern  = dashPattern
+-  this.lineBuffer   = lineBuffer
+-  this.pickBuffer   = pickBuffer
+-  this.lineShader   = lineShader
+-  this.mitreShader  = mitreShader
+-  this.fillShader   = fillShader
+-  this.pickShader   = pickShader
+-  this.usingDashes  = false
++proto.drawPick = function (offset) { return offset }
++proto.pick = function (x, y) {
++  return null
++}
+ 
+-  this.bounds     = [Infinity, Infinity, -Infinity, -Infinity]
++proto.update = function (options) {
++  options = options || {}
+ 
+-  this.width      = 1
+-  this.color      = [0,0,1,1]
++  var i, x, y
+ 
+-  //Fill to axes
+-  this.fill       = [false, false, false, false]
+-  this.fillColor  = [[0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1]]
++  var positions = options.positions || []
++  var errors = options.errors || []
+ 
+-  this.data       = null
+-  this.numPoints  = 0
+-  this.vertCount  = 0
++  var lineWidth = 1
++  if ('lineWidth' in options) {
++    lineWidth = +options.lineWidth
++  }
+ 
+-  this.pickOffset = 0
++  var capSize = 5
++  if ('capSize' in options) {
++    capSize = +options.capSize
++  }
+ 
+-  this.lodBuffer = []
+-}
++  this.color = (options.color || [0, 0, 0, 1]).slice()
+ 
+-var proto = GLLine2D.prototype
++  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
+ 
+-proto.draw = (function() {
+-var MATRIX = [1, 0, 0,
+-              0, 1, 0,
+-              0, 0, 1]
+-var SCREEN_SHAPE = [0,0]
+-var PX_AXIS = [1,0]
+-var NX_AXIS = [-1,0]
+-var PY_AXIS = [0,1]
+-var NY_AXIS = [0,-1]
+-return function() {
+-  var plot      = this.plot
+-  var color     = this.color
+-  var width     = this.width
+-  var numPoints = this.numPoints
+-  var bounds    = this.bounds
+-  var count     = this.vertCount
++  var numPoints = this.numPoints = positions.length >> 1
++  for (i = 0; i < numPoints; ++i) {
++    x = positions[i * 2]
++    y = positions[i * 2 + 1]
+ 
+-  if(!count) {
+-    return
++    bounds[0] = Math.min(x, bounds[0])
++    bounds[1] = Math.min(y, bounds[1])
++    bounds[2] = Math.max(x, bounds[2])
++    bounds[3] = Math.max(y, bounds[3])
++  }
++  if (bounds[2] === bounds[0]) {
++    bounds[2] += 1
+   }
++  if (bounds[3] === bounds[1]) {
++    bounds[3] += 1
++  }
++  var sx = 1.0 / (bounds[2] - bounds[0])
++  var sy = 1.0 / (bounds[3] - bounds[1])
++  var tx = bounds[0]
++  var ty = bounds[1]
+ 
+-  var gl        = plot.gl
+-  var viewBox   = plot.viewBox
+-  var dataBox   = plot.dataBox
+-  var pixelRatio = plot.pixelRatio
++  var bufferData = pool.mallocFloat32(numPoints * WEIGHTS.length * 4)
++  var ptr = 0
++  for (i = 0; i < numPoints; ++i) {
++    x = positions[2 * i]
++    y = positions[2 * i + 1]
++    var ex0 = errors[4 * i]
++    var ex1 = errors[4 * i + 1]
++    var ey0 = errors[4 * i + 2]
++    var ey1 = errors[4 * i + 3]
+ 
+-  var boundX  = bounds[2] - bounds[0]
+-  var boundY  = bounds[3] - bounds[1]
+-  var dataX   = dataBox[2] - dataBox[0]
+-  var dataY   = dataBox[3] - dataBox[1]
+-  var screenX = viewBox[2] - viewBox[0]
+-  var screenY = viewBox[3] - viewBox[1]
++    for (var j = 0; j < WEIGHTS.length; ++j) {
++      var w = WEIGHTS[j]
+ 
+-  MATRIX[0] = 2.0 * boundX / dataX
+-  MATRIX[4] = 2.0 * boundY / dataY
+-  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++      var dx = w[0]
++      var dy = w[1]
+ 
+-  SCREEN_SHAPE[0] = screenX
+-  SCREEN_SHAPE[1] = screenY
++      if (dx < 0) {
++        dx *= ex0
++      } else if (dx > 0) {
++        dx *= ex1
++      }
+ 
+-  var buffer    = this.lineBuffer
+-  buffer.bind()
++      if (dy < 0) {
++        dy *= ey0
++      } else if (dy > 0) {
++        dy *= ey1
++      }
+ 
+-  var fill = this.fill
++      bufferData[ptr++] = sx * ((x - tx) + dx)
++      bufferData[ptr++] = sy * ((y - ty) + dy)
++      bufferData[ptr++] = lineWidth * w[2] + (capSize + lineWidth) * w[4]
++      bufferData[ptr++] = lineWidth * w[3] + (capSize + lineWidth) * w[5]
++    }
++  }
++  this.buffer.update(bufferData)
++  pool.free(bufferData)
++}
+ 
+-  if(fill[0] || fill[1] || fill[2] || fill[3]) {
++proto.dispose = function () {
++  this.plot.removeObject(this)
++  this.shader.dispose()
++  this.buffer.dispose()
++}
+ 
+-    var fillShader = this.fillShader
+-    fillShader.bind()
++function createError2D (plot, options) {
++  var shader = createShader(plot.gl, shaders.vertex, shaders.fragment)
++  var buffer = createBuffer(plot.gl)
+ 
+-    var fillUniforms = fillShader.uniforms
+-    fillUniforms.matrix = MATRIX
+-    fillUniforms.depth = plot.nextDepthValue()
++  var errorbars = new GLError2D(plot, shader, buffer)
+ 
+-    var fillAttributes = fillShader.attributes
+-    fillAttributes.a.pointer(gl.FLOAT, false, 16, 0)
+-    fillAttributes.d.pointer(gl.FLOAT, false, 16, 8)
++  errorbars.update(options)
+ 
+-    gl.depthMask(true)
+-    gl.enable(gl.DEPTH_TEST)
++  plot.addObject(errorbars)
+ 
+-    var fillColor = this.fillColor
+-    if(fill[0]) {
+-      fillUniforms.color        = fillColor[0]
+-      fillUniforms.projectAxis  = NX_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
+-    }
++  return errorbars
++}
+ 
+-    if(fill[1]) {
+-      fillUniforms.color        = fillColor[1]
+-      fillUniforms.projectAxis  = NY_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
+-    }
++},{"./lib/shaders":70,"gl-buffer":63,"gl-shader":96,"typedarray-pool":162}],70:[function(require,module,exports){
+ 
+-    if(fill[2]) {
+-      fillUniforms.color        = fillColor[2]
+-      fillUniforms.projectAxis  = PX_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
+-    }
+ 
+-    if(fill[3]) {
+-      fillUniforms.color        = fillColor[3]
+-      fillUniforms.projectAxis  = PY_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
+-    }
++module.exports = {
++  vertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 pixelOffset;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvoid main() {\n  vec3 scrPosition = viewTransform * vec3(position, 1);\n  gl_Position = vec4(\n    scrPosition.xy + scrPosition.z * pixelScale * pixelOffset,\n    0,\n    scrPosition.z);\n}\n",
++  fragment: "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
++}
+ 
+-    gl.depthMask(false)
+-    gl.disable(gl.DEPTH_TEST)
+-  }
++},{}],71:[function(require,module,exports){
++'use strict'
+ 
+-  var shader    = this.lineShader
+-  shader.bind()
++var createTexture = require('gl-texture2d')
+ 
+-  var uniforms = shader.uniforms
+-  uniforms.matrix = MATRIX
+-  uniforms.color  = color
+-  uniforms.width  = width * pixelRatio
+-  uniforms.screenShape = SCREEN_SHAPE
+-  uniforms.dashPattern = this.dashPattern.bind()
+-  uniforms.dashLength = this.dashLength * pixelRatio
++module.exports = createFBO
+ 
+-  var attributes = shader.attributes
+-  attributes.a.pointer(gl.FLOAT, false, 16, 0)
+-  attributes.d.pointer(gl.FLOAT, false, 16, 8)
++var colorAttachmentArrays = null
++var FRAMEBUFFER_UNSUPPORTED
++var FRAMEBUFFER_INCOMPLETE_ATTACHMENT
++var FRAMEBUFFER_INCOMPLETE_DIMENSIONS
++var FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+ 
+-  gl.drawArrays(gl.TRIANGLES, 0, count)
++function saveFBOState(gl) {
++  var fbo = gl.getParameter(gl.FRAMEBUFFER_BINDING)
++  var rbo = gl.getParameter(gl.RENDERBUFFER_BINDING)
++  var tex = gl.getParameter(gl.TEXTURE_BINDING_2D)
++  return [fbo, rbo, tex]
++}
+ 
+-  //Draw mitres
+-  if(width > 2 && !this.usingDashes) {
+-    var mshader = this.mitreShader
+-    mshader.bind()
++function restoreFBOState(gl, data) {
++  gl.bindFramebuffer(gl.FRAMEBUFFER, data[0])
++  gl.bindRenderbuffer(gl.RENDERBUFFER, data[1])
++  gl.bindTexture(gl.TEXTURE_2D, data[2])
++}
+ 
+-    var muniforms = mshader.uniforms
+-    muniforms.matrix = MATRIX
+-    muniforms.color  = color
+-    muniforms.screenShape = SCREEN_SHAPE
+-    muniforms.radius = width * pixelRatio
++function lazyInitColorAttachments(gl, ext) {
++  var maxColorAttachments = gl.getParameter(ext.MAX_COLOR_ATTACHMENTS_WEBGL)
++  colorAttachmentArrays = new Array(maxColorAttachments + 1)
++  for(var i=0; i<=maxColorAttachments; ++i) {
++    var x = new Array(maxColorAttachments)
++    for(var j=0; j<i; ++j) {
++      x[j] = gl.COLOR_ATTACHMENT0 + j
++    }
++    for(var j=i; j<maxColorAttachments; ++j) {
++      x[j] = gl.NONE
++    }
++    colorAttachmentArrays[i] = x
++  }
++}
+ 
+-    mshader.attributes.p.pointer(gl.FLOAT, false, 48, 0)
+-    gl.drawArrays(gl.POINTS, 0, (count/3)|0)
++//Throw an appropriate error
++function throwFBOError(status) {
++  switch(status){
++    case FRAMEBUFFER_UNSUPPORTED:
++      throw new Error('gl-fbo: Framebuffer unsupported')
++    case FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
++      throw new Error('gl-fbo: Framebuffer incomplete attachment')
++    case FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
++      throw new Error('gl-fbo: Framebuffer incomplete dimensions')
++    case FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
++      throw new Error('gl-fbo: Framebuffer incomplete missing attachment')
++    default:
++      throw new Error('gl-fbo: Framebuffer failed for unspecified reason')
+   }
+ }
+-})()
+ 
+-proto.drawPick = (function() {
+-  var MATRIX = [1, 0, 0,
+-                0, 1, 0,
+-                0, 0, 1]
+-  var SCREEN_SHAPE = [0,0]
+-  var PICK_OFFSET = [0,0,0,0]
+-  return function(pickOffset) {
+-    var plot      = this.plot
+-    var shader    = this.pickShader
+-    var buffer    = this.lineBuffer
+-    var pickBuffer= this.pickBuffer
+-    var width     = this.width
+-    var numPoints = this.numPoints
+-    var bounds    = this.bounds
+-    var count     = this.vertCount
++//Initialize a texture object
++function initTexture(gl, width, height, type, format, attachment) {
++  if(!type) {
++    return null
++  }
++  var result = createTexture(gl, width, height, format, type)
++  result.magFilter = gl.NEAREST
++  result.minFilter = gl.NEAREST
++  result.mipSamples = 1
++  result.bind()
++  gl.framebufferTexture2D(gl.FRAMEBUFFER, attachment, gl.TEXTURE_2D, result.handle, 0)
++  return result
++}
+ 
+-    var gl        = plot.gl
+-    var viewBox   = plot.viewBox
+-    var dataBox   = plot.dataBox
+-    var pixelRatio = plot.pickPixelRatio
++//Initialize a render buffer object
++function initRenderBuffer(gl, width, height, component, attachment) {
++  var result = gl.createRenderbuffer()
++  gl.bindRenderbuffer(gl.RENDERBUFFER, result)
++  gl.renderbufferStorage(gl.RENDERBUFFER, component, width, height)
++  gl.framebufferRenderbuffer(gl.FRAMEBUFFER, attachment, gl.RENDERBUFFER, result)
++  return result
++}
+ 
+-    var boundX  = bounds[2]  - bounds[0]
+-    var boundY  = bounds[3]  - bounds[1]
+-    var dataX   = dataBox[2] - dataBox[0]
+-    var dataY   = dataBox[3] - dataBox[1]
+-    var screenX = viewBox[2] - viewBox[0]
+-    var screenY = viewBox[3] - viewBox[1]
++//Rebuild the frame buffer
++function rebuildFBO(fbo) {
+ 
+-    this.pickOffset = pickOffset
++  //Save FBO state
++  var state = saveFBOState(fbo.gl)
+ 
+-    if(!count) {
+-      return pickOffset + numPoints
++  var gl = fbo.gl
++  var handle = fbo.handle = gl.createFramebuffer()
++  var width = fbo._shape[0]
++  var height = fbo._shape[1]
++  var numColors = fbo.color.length
++  var ext = fbo._ext
++  var useStencil = fbo._useStencil
++  var useDepth = fbo._useDepth
++  var colorType = fbo._colorType
++
++  //Bind the fbo
++  gl.bindFramebuffer(gl.FRAMEBUFFER, handle)
++
++  //Allocate color buffers
++  for(var i=0; i<numColors; ++i) {
++    fbo.color[i] = initTexture(gl, width, height, colorType, gl.RGBA, gl.COLOR_ATTACHMENT0 + i)
++  }
++  if(numColors === 0) {
++    fbo._color_rb = initRenderBuffer(gl, width, height, gl.RGBA4, gl.COLOR_ATTACHMENT0)
++    if(ext) {
++      ext.drawBuffersWEBGL(colorAttachmentArrays[0])
+     }
++  } else if(numColors > 1) {
++    ext.drawBuffersWEBGL(colorAttachmentArrays[numColors])
++  }
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++  //Allocate depth/stencil buffers
++  var WEBGL_depth_texture = gl.getExtension('WEBGL_depth_texture')
++  if(WEBGL_depth_texture) {
++    if(useStencil) {
++      fbo.depth = initTexture(gl, width, height,
++                          WEBGL_depth_texture.UNSIGNED_INT_24_8_WEBGL,
++                          gl.DEPTH_STENCIL,
++                          gl.DEPTH_STENCIL_ATTACHMENT)
++    } else if(useDepth) {
++      fbo.depth = initTexture(gl, width, height,
++                          gl.UNSIGNED_SHORT,
++                          gl.DEPTH_COMPONENT,
++                          gl.DEPTH_ATTACHMENT)
++    }
++  } else {
++    if(useDepth && useStencil) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_STENCIL, gl.DEPTH_STENCIL_ATTACHMENT)
++    } else if(useDepth) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_COMPONENT16, gl.DEPTH_ATTACHMENT)
++    } else if(useStencil) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.STENCIL_INDEX, gl.STENCIL_ATTACHMENT)
++    }
++  }
+ 
+-    SCREEN_SHAPE[0] = screenX
+-    SCREEN_SHAPE[1] = screenY
++  //Check frame buffer state
++  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
++  if(status !== gl.FRAMEBUFFER_COMPLETE) {
+ 
+-    PICK_OFFSET[0] =  pickOffset       & 0xff
+-    PICK_OFFSET[1] = (pickOffset>>>8)  & 0xff
+-    PICK_OFFSET[2] = (pickOffset>>>16) & 0xff
+-    PICK_OFFSET[3] =  pickOffset>>>24
++    //Release all partially allocated resources
++    fbo._destroyed = true
+ 
+-    shader.bind()
++    //Release all resources
++    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++    gl.deleteFramebuffer(fbo.handle)
++    fbo.handle = null
++    if(fbo.depth) {
++      fbo.depth.dispose()
++      fbo.depth = null
++    }
++    if(fbo._depth_rb) {
++      gl.deleteRenderbuffer(fbo._depth_rb)
++      fbo._depth_rb = null
++    }
++    for(var i=0; i<fbo.color.length; ++i) {
++      fbo.color[i].dispose()
++      fbo.color[i] = null
++    }
++    if(fbo._color_rb) {
++      gl.deleteRenderbuffer(fbo._color_rb)
++      fbo._color_rb = null
++    }
+ 
+-    var uniforms = shader.uniforms
+-    uniforms.matrix      = MATRIX
+-    uniforms.width       = width * pixelRatio
+-    uniforms.pickOffset  = PICK_OFFSET
+-    uniforms.screenShape = SCREEN_SHAPE
++    restoreFBOState(gl, state)
+ 
+-    var attributes = shader.attributes
++    //Throw the frame buffer error
++    throwFBOError(status)
++  }
+ 
+-    buffer.bind()
+-    attributes.a.pointer(gl.FLOAT, false, 16, 0)
+-    attributes.d.pointer(gl.FLOAT, false, 16, 8)
++  //Everything ok, let's get on with life
++  restoreFBOState(gl, state)
++}
+ 
+-    pickBuffer.bind()
+-    attributes.pick0.pointer(gl.UNSIGNED_BYTE, false, 8, 0)
+-    attributes.pick1.pointer(gl.UNSIGNED_BYTE, false, 8, 4)
++function Framebuffer(gl, width, height, colorType, numColors, useDepth, useStencil, ext) {
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, count)
++  //Handle and set properties
++  this.gl = gl
++  this._shape = [width|0, height|0]
++  this._destroyed = false
++  this._ext = ext
+ 
+-    return pickOffset + numPoints
++  //Allocate buffers
++  this.color = new Array(numColors)
++  for(var i=0; i<numColors; ++i) {
++    this.color[i] = null
+   }
+-})()
++  this._color_rb = null
++  this.depth = null
++  this._depth_rb = null
+ 
+-proto.pick = function(x, y, value) {
+-  var pickOffset = this.pickOffset
+-  var pointCount = this.numPoints
+-  if(value < pickOffset || value >= pickOffset + pointCount) {
+-    return null
+-  }
+-  var pointId = value - pickOffset
+-  var points = this.data
+-  return {
+-    object:    this,
+-    pointId:   pointId,
+-    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+-  }
+-}
++  //Save depth and stencil flags
++  this._colorType = colorType
++  this._useDepth = useDepth
++  this._useStencil = useStencil
+ 
+-function deepCopy(arr) {
+-  return arr.map(function(x) {
+-    return x.slice()
++  //Shape vector for resizing
++  var parent = this
++  var shapeVector = [width|0, height|0]
++  Object.defineProperties(shapeVector, {
++    0: {
++      get: function() {
++        return parent._shape[0]
++      },
++      set: function(w) {
++        return parent.width = w
++      }
++    },
++    1: {
++      get: function() {
++        return parent._shape[1]
++      },
++      set: function(h) {
++        return parent.height = h
++      }
++    }
+   })
+-}
++  this._shapeVector = shapeVector
+ 
+-proto.update = function(options) {
+-  options = options || {}
++  //Initialize all attachments
++  rebuildFBO(this)
++}
+ 
+-  var gl = this.plot.gl
++var proto = Framebuffer.prototype
+ 
+-  var connectGaps = !!options.connectGaps
++function reshapeFBO(fbo, w, h) {
++  //If fbo is invalid, just skip this
++  if(fbo._destroyed) {
++    throw new Error('gl-fbo: Can\'t resize destroyed FBO')
++  }
+ 
+-  this.color = (options.color || [0,0,1,1]).slice()
+-  this.width = +(options.width || 1)
++  //Don't resize if no change in shape
++  if( (fbo._shape[0] === w) &&
++      (fbo._shape[1] === h) ) {
++    return
++  }
+ 
+-  this.fill      = (options.fill || [false,false,false,false]).slice()
+-  this.fillColor = deepCopy(options.fillColor || [[0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1]])
++  var gl = fbo.gl
+ 
+-  var dashes = options.dashes || [1]
+-  var dashLength = 0
+-  for(var i=0; i<dashes.length; ++i) {
+-    dashLength += dashes[i]
+-  }
+-  var dashData = pool.mallocUint8(dashLength)
+-  var ptr = 0
+-  var fillColor = 255
+-  for(var i=0; i<dashes.length; ++i) {
+-    for(var j=0; j<dashes[i]; ++j) {
+-      dashData[ptr++] = fillColor
+-    }
+-    fillColor ^= 255
++  //Check parameter ranges
++  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
++  if( w < 0 || w > maxFBOSize ||
++      h < 0 || h > maxFBOSize) {
++    throw new Error('gl-fbo: Can\'t resize FBO, invalid dimensions')
+   }
+-  this.dashPattern.dispose()
+-  this.usingDashes = dashes.length > 1
+-
+-  this.dashPattern = createTexture(gl,
+-    ndarray(dashData, [dashLength, 1, 4], [1, 0, 0]))
+-  this.dashPattern.minFilter = gl.NEAREST
+-  this.dashPattern.magFilter = gl.NEAREST
+-  this.dashLength = dashLength
+-  pool.free(dashData)
+ 
+-  var data = options.positions
+-  this.data = data
++  //Update shape
++  fbo._shape[0] = w
++  fbo._shape[1] = h
+ 
+-  var bounds = this.bounds
+-  bounds[0] = bounds[1] = Infinity
+-  bounds[2] = bounds[3] = -Infinity
++  //Save framebuffer state
++  var state = saveFBOState(gl)
+ 
+-  var numPoints = this.numPoints = data.length>>>1
+-  if(numPoints === 0) {
+-    return
++  //Resize framebuffer attachments
++  for(var i=0; i<fbo.color.length; ++i) {
++    fbo.color[i].shape = fbo._shape
+   }
+-
+-  for(var i=0; i<numPoints; ++i) {
+-    var ax = data[2*i]
+-    var ay = data[2*i+1]
+-
+-    if (isNaN(ax) || isNaN(ay)) {
+-      continue
++  if(fbo._color_rb) {
++    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._color_rb)
++    gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fbo._shape[0], fbo._shape[1])
++  }
++  if(fbo.depth) {
++    fbo.depth.shape = fbo._shape
++  }
++  if(fbo._depth_rb) {
++    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._depth_rb)
++    if(fbo._useDepth && fbo._useStencil) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, fbo._shape[0], fbo._shape[1])
++    } else if(fbo._useDepth) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, fbo._shape[0], fbo._shape[1])
++    } else if(fbo._useStencil) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.STENCIL_INDEX, fbo._shape[0], fbo._shape[1])
+     }
+-
+-    bounds[0] = Math.min(bounds[0], ax)
+-    bounds[1] = Math.min(bounds[1], ay)
+-    bounds[2] = Math.max(bounds[2], ax)
+-    bounds[3] = Math.max(bounds[3], ay)
+   }
+ 
+-  if(bounds[0] === bounds[2]) {
+-    bounds[2] += 1
+-  }
+-  if(bounds[3] === bounds[1]) {
+-    bounds[3] += 1
++  //Check FBO status after resize, if something broke then die in a fire
++  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo.handle)
++  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
++  if(status !== gl.FRAMEBUFFER_COMPLETE) {
++    fbo.dispose()
++    restoreFBOState(gl, state)
++    throwFBOError(status)
+   }
+ 
+-  //Generate line data
+-  var lineData    = pool.mallocFloat32(24*(numPoints-1))
+-  var pickData    = pool.mallocUint32(12*(numPoints-1))
+-  var lineDataPtr = lineData.length
+-  var pickDataPtr = pickData.length
+-  var ptr = numPoints
++  //Restore framebuffer state
++  restoreFBOState(gl, state)
++}
+ 
+-  var count = 0
++Object.defineProperties(proto, {
++  'shape': {
++    get: function() {
++      if(this._destroyed) {
++        return [0,0]
++      }
++      return this._shapeVector
++    },
++    set: function(x) {
++      if(!Array.isArray(x)) {
++        x = [x|0, x|0]
++      }
++      if(x.length !== 2) {
++        throw new Error('gl-fbo: Shape vector must be length 2')
++      }
+ 
+-  while(ptr > 1) {
+-    var id = --ptr
+-    var ax = data[2*ptr]
+-    var ay = data[2*ptr+1]
++      var w = x[0]|0
++      var h = x[1]|0
++      reshapeFBO(this, w, h)
+ 
+-    var next = id-1
+-    var bx = data[2*next]
+-    var by = data[2*next+1]
++      return [w, h]
++    },
++    enumerable: false
++  },
++  'width': {
++    get: function() {
++      if(this._destroyed) {
++        return 0
++      }
++      return this._shape[0]
++    },
++    set: function(w) {
++      w = w|0
++      reshapeFBO(this, w, this._shape[1])
++      return w
++    },
++    enumerable: false
++  },
++  'height': {
++    get: function() {
++      if(this._destroyed) {
++        return 0
++      }
++      return this._shape[1]
++    },
++    set: function(h) {
++      h = h|0
++      reshapeFBO(this, this._shape[0], h)
++      return h
++    },
++    enumerable: false
++  }
++})
+ 
+-    if (isNaN(ax) || isNaN(ay) || isNaN(bx) || isNaN(by)) {
+-      continue
+-    }
++proto.bind = function() {
++  if(this._destroyed) {
++    return
++  }
++  var gl = this.gl
++  gl.bindFramebuffer(gl.FRAMEBUFFER, this.handle)
++  gl.viewport(0, 0, this._shape[0], this._shape[1])
++}
+ 
+-    count += 1
++proto.dispose = function() {
++  if(this._destroyed) {
++    return
++  }
++  this._destroyed = true
++  var gl = this.gl
++  gl.deleteFramebuffer(this.handle)
++  this.handle = null
++  if(this.depth) {
++    this.depth.dispose()
++    this.depth = null
++  }
++  if(this._depth_rb) {
++    gl.deleteRenderbuffer(this._depth_rb)
++    this._depth_rb = null
++  }
++  for(var i=0; i<this.color.length; ++i) {
++    this.color[i].dispose()
++    this.color[i] = null
++  }
++  if(this._color_rb) {
++    gl.deleteRenderbuffer(this._color_rb)
++    this._color_rb = null
++  }
++}
+ 
+-    ax = (ax - bounds[0]) / (bounds[2] - bounds[0])
+-    ay = (ay - bounds[1]) / (bounds[3] - bounds[1])
++function createFBO(gl, width, height, options) {
+ 
+-    bx = (bx - bounds[0]) / (bounds[2] - bounds[0])
+-    by = (by - bounds[1]) / (bounds[3] - bounds[1])
++  //Update frame buffer error code values
++  if(!FRAMEBUFFER_UNSUPPORTED) {
++    FRAMEBUFFER_UNSUPPORTED = gl.FRAMEBUFFER_UNSUPPORTED
++    FRAMEBUFFER_INCOMPLETE_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT
++    FRAMEBUFFER_INCOMPLETE_DIMENSIONS = gl.FRAMEBUFFER_INCOMPLETE_DIMENSIONS
++    FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
++  }
+ 
+-    var dx = bx - ax
+-    var dy = by - ay
++  //Lazily initialize color attachment arrays
++  var WEBGL_draw_buffers = gl.getExtension('WEBGL_draw_buffers')
++  if(!colorAttachmentArrays && WEBGL_draw_buffers) {
++    lazyInitColorAttachments(gl, WEBGL_draw_buffers)
++  }
+ 
+-    var akey0 = id     | (1<<24)
+-    var akey1 = (id-1)
+-    var bkey0 = id
+-    var bkey1 = (id-1) | (1<<24)
++  //Special case: Can accept an array as argument
++  if(Array.isArray(width)) {
++    options = height
++    height = width[1]|0
++    width = width[0]|0
++  }
+ 
+-    lineData[--lineDataPtr] = -dy
+-    lineData[--lineDataPtr] = -dx
+-    lineData[--lineDataPtr] = ay
+-    lineData[--lineDataPtr] = ax
+-    pickData[--pickDataPtr] = akey0
+-    pickData[--pickDataPtr] = akey1
++  if(typeof width !== 'number') {
++    throw new Error('gl-fbo: Missing shape parameter')
++  }
+ 
+-    lineData[--lineDataPtr] = dy
+-    lineData[--lineDataPtr] = dx
+-    lineData[--lineDataPtr] = by
+-    lineData[--lineDataPtr] = bx
+-    pickData[--pickDataPtr] = bkey0
+-    pickData[--pickDataPtr] = bkey1
++  //Validate width/height properties
++  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
++  if(width < 0 || width > maxFBOSize || height < 0 || height > maxFBOSize) {
++    throw new Error('gl-fbo: Parameters are too large for FBO')
++  }
+ 
+-    lineData[--lineDataPtr] = -dy
+-    lineData[--lineDataPtr] = -dx
+-    lineData[--lineDataPtr] = by
+-    lineData[--lineDataPtr] = bx
+-    pickData[--pickDataPtr] = bkey0
+-    pickData[--pickDataPtr] = bkey1
++  //Handle each option type
++  options = options || {}
+ 
+-    lineData[--lineDataPtr] = dy
+-    lineData[--lineDataPtr] = dx
+-    lineData[--lineDataPtr] = by
+-    lineData[--lineDataPtr] = bx
+-    pickData[--pickDataPtr] = bkey0
+-    pickData[--pickDataPtr] = bkey1
++  //Figure out number of color buffers to use
++  var numColors = 1
++  if('color' in options) {
++    numColors = Math.max(options.color|0, 0)
++    if(numColors < 0) {
++      throw new Error('gl-fbo: Must specify a nonnegative number of colors')
++    }
++    if(numColors > 1) {
++      //Check if multiple render targets supported
++      if(!WEBGL_draw_buffers) {
++        throw new Error('gl-fbo: Multiple draw buffer extension not supported')
++      } else if(numColors > gl.getParameter(WEBGL_draw_buffers.MAX_COLOR_ATTACHMENTS_WEBGL)) {
++        throw new Error('gl-fbo: Context does not support ' + numColors + ' draw buffers')
++      }
++    }
++  }
+ 
+-    lineData[--lineDataPtr] = -dy
+-    lineData[--lineDataPtr] = -dx
+-    lineData[--lineDataPtr] = ay
+-    lineData[--lineDataPtr] = ax
+-    pickData[--pickDataPtr] = akey0
+-    pickData[--pickDataPtr] = akey1
++  //Determine whether to use floating point textures
++  var colorType = gl.UNSIGNED_BYTE
++  var OES_texture_float = gl.getExtension('OES_texture_float')
++  if(options.float && numColors > 0) {
++    if(!OES_texture_float) {
++      throw new Error('gl-fbo: Context does not support floating point textures')
++    }
++    colorType = gl.FLOAT
++  } else if(options.preferFloat && numColors > 0) {
++    if(OES_texture_float) {
++      colorType = gl.FLOAT
++    }
++  }
+ 
+-    lineData[--lineDataPtr] = dy
+-    lineData[--lineDataPtr] = dx
+-    lineData[--lineDataPtr] = ay
+-    lineData[--lineDataPtr] = ax
+-    pickData[--pickDataPtr] = akey0
+-    pickData[--pickDataPtr] = akey1
++  //Check if we should use depth buffer
++  var useDepth = true
++  if('depth' in options) {
++    useDepth = !!options.depth
+   }
+ 
+-  this.vertCount = 6 * count
+-  this.lineBuffer.update(lineData.subarray(lineDataPtr))
+-  this.pickBuffer.update(pickData.subarray(pickDataPtr))
++  //Check if we should use a stencil buffer
++  var useStencil = false
++  if('stencil' in options) {
++    useStencil = !!options.stencil
++  }
+ 
+-  pool.free(lineData)
+-  pool.free(pickData)
++  return new Framebuffer(
++    gl,
++    width,
++    height,
++    colorType,
++    numColors,
++    useDepth,
++    useStencil,
++    WEBGL_draw_buffers)
+ }
+ 
+-proto.dispose = function() {
+-  this.plot.removeObject(this)
+-  this.lineBuffer.dispose()
+-  this.pickBuffer.dispose()
+-  this.lineShader.dispose()
+-  this.mitreShader.dispose()
+-  this.fillShader.dispose()
+-  this.pickShader.dispose()
+-  this.dashPattern.dispose()
+-}
++},{"gl-texture2d":104}],72:[function(require,module,exports){
+ 
+-function createLinePlot(plot, options) {
+-  var gl = plot.gl
+-  var lineBuffer  = createBuffer(gl)
+-  var pickBuffer  = createBuffer(gl)
+-  var dashPattern = createTexture(gl, [1,1])
+-  var lineShader  = createShader(gl, SHADERS.lineVertex,  SHADERS.lineFragment)
+-  var mitreShader = createShader(gl, SHADERS.mitreVertex, SHADERS.mitreFragment)
+-  var fillShader  = createShader(gl, SHADERS.fillVertex,  SHADERS.fillFragment)
+-  var pickShader  = createShader(gl, SHADERS.pickVertex,  SHADERS.pickFragment)
+-  var linePlot    = new GLLine2D(
+-    plot,
+-    dashPattern,
+-    lineBuffer,
+-    pickBuffer,
+-    lineShader,
+-    mitreShader,
+-    fillShader,
+-    pickShader)
+-  plot.addObject(linePlot)
+-  linePlot.update(options)
+-  return linePlot
+-}
++var sprintf = require('sprintf-js').sprintf;
++var glConstants = require('gl-constants/lookup');
++var shaderName = require('glsl-shader-name');
++var addLineNumbers = require('add-line-numbers');
+ 
+-},{"./lib/shaders":76,"gl-buffer":66,"gl-shader":96,"gl-texture2d":115,"ndarray":131,"typedarray-pool":151}],78:[function(require,module,exports){
+-module.exports = fromQuat;
++module.exports = formatCompilerError;
+ 
+-/**
+- * Creates a matrix from a quaternion rotation.
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @returns {mat4} out
+- */
+-function fromQuat(out, q) {
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++function formatCompilerError(errLog, src, type) {
++    "use strict";
++
++    var name = shaderName(src) || 'of unknown name (see npm glsl-shader-name)';
++
++    var typeName = 'unknown type';
++    if (type !== undefined) {
++        typeName = type === glConstants.FRAGMENT_SHADER ? 'fragment' : 'vertex'
++    }
+ 
+-        xx = x * x2,
+-        yx = y * x2,
+-        yy = y * y2,
+-        zx = z * x2,
+-        zy = z * y2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++    var longForm = sprintf('Error compiling %s shader %s:\n', typeName, name);
++    var shortForm = sprintf("%s%s", longForm, errLog);
+ 
+-    out[0] = 1 - yy - zz;
+-    out[1] = yx + wz;
+-    out[2] = zx - wy;
+-    out[3] = 0;
++    var errorStrings = errLog.split('\n');
++    var errors = {};
+ 
+-    out[4] = yx - wz;
+-    out[5] = 1 - xx - zz;
+-    out[6] = zy + wx;
+-    out[7] = 0;
++    for (var i = 0; i < errorStrings.length; i++) {
++        var errorString = errorStrings[i];
++        if (errorString === '') continue;
++        var lineNo = parseInt(errorString.split(':')[2]);
++        if (isNaN(lineNo)) {
++            throw new Error(sprintf('Could not parse error: %s', errorString));
++        }
++        errors[lineNo] = errorString;
++    }
+ 
+-    out[8] = zx + wy;
+-    out[9] = zy - wx;
+-    out[10] = 1 - xx - yy;
+-    out[11] = 0;
++    var lines = addLineNumbers(src).split('\n');
+ 
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
++    for (var i = 0; i < lines.length; i++) {
++        if (!errors[i+3] && !errors[i+2] && !errors[i+1]) continue;
++        var line = lines[i];
++        longForm += line + '\n';
++        if (errors[i+1]) {
++            var e = errors[i+1];
++            e = e.substr(e.split(':', 3).join(':').length + 1).trim();
++            longForm += sprintf('^^^ %s\n\n', e);
++        }
++    }
+ 
+-    return out;
+-};
+-},{}],79:[function(require,module,exports){
++    return {
++        long: longForm.trim(),
++        short: shortForm.trim()
++    };
++}
++
++
++},{"add-line-numbers":8,"gl-constants/lookup":65,"glsl-shader-name":105,"sprintf-js":153}],73:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createBoxes
++module.exports = createHeatmap2D
+ 
+-var createBuffer = require('gl-buffer')
++var bsearch = require('binary-search-bounds')
++var iota = require('iota-array')
++var pool = require('typedarray-pool')
+ var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
+ 
+-var shaders = require('./shaders')
++var shaders = require('./lib/shaders')
+ 
+-function Boxes(plot, vbo, shader) {
+-  this.plot   = plot
+-  this.vbo    = vbo
+-  this.shader = shader
++function GLHeatmap2D(
++  plot,
++  shader,
++  pickShader,
++  positionBuffer,
++  colorBuffer,
++  idBuffer) {
++  this.plot           = plot
++  this.shader         = shader
++  this.pickShader     = pickShader
++  this.positionBuffer = positionBuffer
++  this.colorBuffer    = colorBuffer
++  this.idBuffer       = idBuffer
++  this.xData          = []
++  this.yData          = []
++  this.shape          = [0,0]
++  this.bounds         = [Infinity, Infinity, -Infinity, -Infinity]
++  this.pickOffset     = 0
+ }
+ 
+-var proto = Boxes.prototype
++var proto = GLHeatmap2D.prototype
+ 
+-proto.bind = function() {
+-  var shader = this.shader
+-  this.vbo.bind()
+-  this.shader.bind()
+-  shader.attributes.coord.pointer()
+-  shader.uniforms.screenBox = this.plot.screenBox
+-}
++var WEIGHTS = [
++  0, 0,
++  1, 0,
++  0, 1,
++  1, 0,
++  1, 1,
++  0, 1
++]
+ 
+-proto.drawBox = (function() {
+-  var lo = [0,0]
+-  var hi = [0,0]
+-  return function(loX, loY, hiX, hiY, color) {
+-    var plot       = this.plot
+-    var shader     = this.shader
+-    var gl         = plot.gl
++proto.draw = (function() {
++  var MATRIX = [
++    1, 0, 0,
++    0, 1, 0,
++    0, 0, 1
++  ]
+ 
+-    lo[0] = loX
+-    lo[1] = loY
+-    hi[0] = hiX
+-    hi[1] = hiY
++  return function() {
++    var plot          = this.plot
++    var shader        = this.shader
++    var bounds        = this.bounds
++    var numVertices   = this.numVertices
+ 
+-    shader.uniforms.lo     = lo
+-    shader.uniforms.hi     = hi
+-    shader.uniforms.color  = color
++    var gl            = plot.gl
++    var viewBox       = plot.viewBox
++    var dataBox       = plot.dataBox
+ 
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
+-  }
+-}())
++    var boundX  = bounds[2]  - bounds[0]
++    var boundY  = bounds[3]  - bounds[1]
++    var dataX   = dataBox[2] - dataBox[0]
++    var dataY   = dataBox[3] - dataBox[1]
+ 
+-proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
+-}
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-function createBoxes(plot) {
+-  var gl  = plot.gl
+-  var vbo = createBuffer(gl, [
+-    0,0,
+-    0,1,
+-    1,0,
+-    1,1])
+-  var shader  = createShader(gl, shaders.boxVert, shaders.lineFrag)
+-  return new Boxes(plot, vbo, shader)
+-}
++    shader.bind()
+ 
+-},{"./shaders":82,"gl-buffer":66,"gl-shader":96}],80:[function(require,module,exports){
+-'use strict'
++    var uniforms = shader.uniforms
++    uniforms.viewTransform = MATRIX
+ 
+-module.exports = createGrid
++    var attributes = shader.attributes
++    this.positionBuffer.bind()
++    attributes.position.pointer()
+ 
+-var createBuffer  = require('gl-buffer')
+-var createShader  = require('gl-shader')
+-var bsearch       = require('binary-search-bounds')
+-var shaders       = require('./shaders')
++    this.colorBuffer.bind()
++    attributes.color.pointer(gl.UNSIGNED_BYTE, true)
+ 
+-function Grid(plot, vbo, shader, tickShader) {
+-  this.plot   = plot
+-  this.vbo    = vbo
+-  this.shader = shader
+-  this.tickShader = tickShader
+-  this.ticks  = [[], []]
+-}
++    gl.drawArrays(gl.TRIANGLES, 0, this.numVertices)
++  }
++})()
+ 
+-function compareTickNum(a, b) {
+-  return a - b
+-}
++proto.drawPick = (function() {
++  var MATRIX = [
++    1, 0, 0,
++    0, 1, 0,
++    0, 0, 1
++  ]
+ 
+-var proto = Grid.prototype
++  var PICK_VECTOR = [0,0,0,0]
+ 
+-proto.draw = (function() {
++  return function(pickOffset) {
++    var plot          = this.plot
++    var shader        = this.pickShader
++    var bounds        = this.bounds
++    var numVertices   = this.numVertices
+ 
+-  var DATA_SHIFT = [0,0]
+-  var DATA_SCALE = [0,0]
+-  var DATA_AXIS  = [0,0]
++    var gl            = plot.gl
++    var viewBox       = plot.viewBox
++    var dataBox       = plot.dataBox
+ 
+-  return function() {
+-    var plot       = this.plot
+-    var vbo        = this.vbo
+-    var shader     = this.shader
+-    var ticks      = this.ticks
+-    var gl         = plot.gl
+-    var bounds     = plot._tickBounds
+-    var dataBox    = plot.dataBox
+-    var viewPixels = plot.viewBox
+-    var lineWidth  = plot.gridLineWidth
+-    var gridColor  = plot.gridLineColor
+-    var gridEnable = plot.gridLineEnable
+-    var pixelRatio = plot.pixelRatio
++    var boundX  = bounds[2]  - bounds[0]
++    var boundY  = bounds[3]  - bounds[1]
++    var dataX   = dataBox[2] - dataBox[0]
++    var dataY   = dataBox[3] - dataBox[1]
+ 
+-    for(var i=0; i<2; ++i) {
+-      var lo = bounds[i]
+-      var hi = bounds[i+2]
+-      var boundScale = hi - lo
+-      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
+-      var dataWidth   = dataBox[i+2] - dataBox[i]
+-      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
+-      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++
++    for(var i=0; i<4; ++i) {
++      PICK_VECTOR[i] = (pickOffset>>(i*8)) & 0xff
+     }
+ 
++    this.pickOffset = pickOffset
++
+     shader.bind()
+-    vbo.bind()
+-    shader.attributes.dataCoord.pointer()
+-    shader.uniforms.dataShift = DATA_SHIFT
+-    shader.uniforms.dataScale = DATA_SCALE
+ 
+-    var offset = 0
+-    for(var i=0; i<2; ++i) {
+-      DATA_AXIS[0] = DATA_AXIS[1] = 0
+-      DATA_AXIS[i] = 1
+-      shader.uniforms.dataAxis  = DATA_AXIS
+-      shader.uniforms.lineWidth = lineWidth[i] / (viewPixels[i+2] - viewPixels[i]) * pixelRatio
+-      shader.uniforms.color     = gridColor[i]
++    var uniforms = shader.uniforms
++    uniforms.viewTransform = MATRIX
++    uniforms.pickOffset    = PICK_VECTOR
+ 
+-      var size = ticks[i].length * 6
+-      if(gridEnable[i] && size) {
+-        gl.drawArrays(gl.TRIANGLES, offset, size)
+-      }
+-      offset += size
+-    }
++    var attributes = shader.attributes
++    this.positionBuffer.bind()
++    attributes.position.pointer()
++
++    this.idBuffer.bind()
++    attributes.pickId.pointer(gl.UNSIGNED_BYTE, false)
++
++    gl.drawArrays(gl.TRIANGLES, 0, this.numVertices)
++
++    return pickOffset + this.shape[0] * this.shape[1]
+   }
+ })()
+ 
+-proto.drawTickMarks = (function() {
+-  var DATA_SHIFT = [0,0]
+-  var DATA_SCALE = [0,0]
+-  var X_AXIS     = [1,0]
+-  var Y_AXIS     = [0,1]
+-  var SCR_OFFSET = [0,0]
+-  var TICK_SCALE = [0,0]
+-
+-  return function() {
+-    var plot       = this.plot
+-    var vbo        = this.vbo
+-    var shader     = this.tickShader
+-    var ticks      = this.ticks
+-    var gl         = plot.gl
+-    var bounds     = plot._tickBounds
+-    var dataBox    = plot.dataBox
+-    var viewBox    = plot.viewBox
+-    var pixelRatio = plot.pixelRatio
+-    var screenBox  = plot.screenBox
++proto.pick = function(x, y, value) {
++  var pickOffset = this.pickOffset
++  var pointCount = this.shape[0] * this.shape[1]
++  if(value < pickOffset || value >= pickOffset + pointCount) {
++    return null
++  }
++  var pointId = value - pickOffset
++  var xData = this.xData
++  var yData = this.yData
++  return {
++    object:     this,
++    pointId:    pointId,
++    dataCoord: [
++          xData[pointId%this.shape[0]],
++          yData[(pointId/this.shape[0])|0] ]
++  }
++}
+ 
+-    var screenWidth  = screenBox[2] - screenBox[0]
+-    var screenHeight = screenBox[3] - screenBox[1]
+-    var viewWidth    = viewBox[2]   - viewBox[0]
+-    var viewHeight   = viewBox[3]   - viewBox[1]
++proto.update = function(options) {
++  options = options || {}
+ 
+-    for(var i=0; i<2; ++i) {
+-      var lo = bounds[i]
+-      var hi = bounds[i+2]
+-      var boundScale = hi - lo
+-      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
+-      var dataWidth   = (dataBox[i+2] - dataBox[i])
+-      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
+-      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
+-    }
++  var shape = options.shape || [0,0]
+ 
+-    DATA_SCALE[0] *= viewWidth / screenWidth
+-    DATA_SHIFT[0] *= viewWidth / screenWidth
++  var x = options.x || iota(shape[0])
++  var y = options.y || iota(shape[1])
++  var z = options.z || new Float32Array(shape[0] * shape[1])
+ 
+-    DATA_SCALE[1] *= viewHeight / screenHeight
+-    DATA_SHIFT[1] *= viewHeight / screenHeight
++  this.xData = x
++  this.yData = y
+ 
+-    shader.bind()
+-    vbo.bind()
++  var colorLevels = options.colorLevels || [0]
++  var colorValues = options.colorValues || [0, 0, 0, 1]
++  var colorCount  = colorLevels.length
+ 
+-    shader.attributes.dataCoord.pointer()
++  var bounds = this.bounds
++  var lox = bounds[0] = x[0]
++  var loy = bounds[1] = y[0]
++  var hix = bounds[2] = x[x.length-1]
++  var hiy = bounds[3] = y[y.length-1]
+ 
+-    var uniforms = shader.uniforms
+-    uniforms.dataShift = DATA_SHIFT
+-    uniforms.dataScale = DATA_SCALE
++  var xs = 1.0 / (hix - lox)
++  var ys = 1.0 / (hiy - loy)
+ 
+-    var tickMarkLength = plot.tickMarkLength
+-    var tickMarkWidth  = plot.tickMarkWidth
+-    var tickMarkColor  = plot.tickMarkColor
++  var numVerts  = shape[0] * shape[1] * (WEIGHTS.length>>>1)
+ 
+-    var xTicksOffset = 0
+-    var yTicksOffset = ticks[0].length * 6
++  this.numVertices = numVerts
+ 
+-    var xStart = Math.min(bsearch.ge(ticks[0], (dataBox[0] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
+-    var xEnd   = Math.min(bsearch.gt(ticks[0], (dataBox[2] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
+-    var xOffset = xTicksOffset + 6 * xStart
+-    var xCount  = 6 * Math.max(0, xEnd - xStart)
++  var colors    = pool.mallocUint8  (numVerts * 4)
++  var positions = pool.mallocFloat32(numVerts * 2)
++  var ids       = pool.mallocUint32 (numVerts)
+ 
+-    var yStart = Math.min(bsearch.ge(ticks[1], (dataBox[1] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
+-    var yEnd   = Math.min(bsearch.gt(ticks[1], (dataBox[3] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
+-    var yOffset = yTicksOffset + 6 * yStart
+-    var yCount  = 6 * Math.max(0, yEnd - yStart)
++  var numX = shape[0]
++  var numY = shape[1]
+ 
+-    SCR_OFFSET[0]         = 2.0 * (viewBox[0] - tickMarkLength[1]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkLength[1] * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkWidth[1]  * pixelRatio / screenHeight
++  this.shape = [numX, numY]
+ 
+-    if(yCount) {
+-      uniforms.color        = tickMarkColor[1]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = Y_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
+-    }
++  var ptr = 0
+ 
+-    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = 2.0 * (viewBox[1] - tickMarkLength[0]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkWidth[0]  * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkLength[0] * pixelRatio / screenHeight
++  for(var j=0; j<numY-1; ++j) {
++    var yc0 = ys * (y[j] - loy)
++    var yc1 = ys * (y[j+1] - loy)
++    for(var i=0; i<numX-1; ++i) {
++      var xc0 = xs * (x[i] - lox)
++      var xc1 = xs * (x[i+1] - lox)
+ 
+-    if(xCount) {
+-      uniforms.color        = tickMarkColor[0]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = X_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
+-    }
++      for(var dd=0; dd<WEIGHTS.length; dd+=2) {
++        var dx = WEIGHTS[dd]
++        var dy = WEIGHTS[dd+1]
++        var offset = (j+dy)*numX + (i+dx)
++        var zc = z[offset]
++        var colorIdx = bsearch.le(colorLevels, zc)
++        var r, g, b, a
++        if(colorIdx < 0) {
++          r = colorValues[0]
++          g = colorValues[1]
++          b = colorValues[2]
++          a = colorValues[3]
++        } else if(colorIdx === colorCount-1) {
++          r = colorValues[4*colorCount-4]
++          g = colorValues[4*colorCount-3]
++          b = colorValues[4*colorCount-2]
++          a = colorValues[4*colorCount-1]
++        } else {
++          var t = (zc - colorLevels[colorIdx]) /
++            (colorLevels[colorIdx+1] - colorLevels[colorIdx])
++          var ti = 1.0 - t
++          var i0 = 4*colorIdx
++          var i1 = 4*(colorIdx+1)
++          r = ti*colorValues[i0]   + t*colorValues[i1]
++          g = ti*colorValues[i0+1] + t*colorValues[i1+1]
++          b = ti*colorValues[i0+2] + t*colorValues[i1+2]
++          a = ti*colorValues[i0+3] + t*colorValues[i1+3]
++        }
+ 
+-    SCR_OFFSET[0]         = 2.0 * (viewBox[2] + tickMarkLength[3]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkLength[3] * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkWidth[3]  * pixelRatio / screenHeight
++        colors[4*ptr]      = 255*r
++        colors[4*ptr+1]    = 255*g
++        colors[4*ptr+2]    = 255*b
++        colors[4*ptr+3]    = 255*a
+ 
+-    if(yCount) {
+-      uniforms.color        = tickMarkColor[3]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = Y_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
+-    }
++        positions[2*ptr]   = (1 - dx) * xc0 + dx * xc1
++        positions[2*ptr+1] = (1 - dy) * yc0 + dy * yc1
+ 
+-    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = 2.0 * (viewBox[3] + tickMarkLength[2]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkWidth[2]  * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkLength[2] * pixelRatio / screenHeight
++        ids[ptr] = j*numX + i
+ 
+-    if(xCount) {
+-      uniforms.color        = tickMarkColor[2]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = X_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
++        ptr += 1
++      }
+     }
+   }
+-})()
+ 
+-proto.update = (function() {
+-  var OFFSET_X = [1,  1, -1, -1,  1, -1]
+-  var OFFSET_Y = [1, -1,  1,  1, -1, -1]
++  this.positionBuffer.update(positions)
++  this.colorBuffer.   update(colors)
++  this.idBuffer.      update(ids)
+ 
+-  return function(options) {
+-    var ticks  = options.ticks
+-    var bounds = options.bounds
+-    var data   = new Float32Array(6 * 3 * (ticks[0].length + ticks[1].length))
++  pool.free(positions)
++  pool.free(colors)
++  pool.free(ids)
++}
+ 
+-    var zeroLineEnable = this.plot.zeroLineEnable
++proto.dispose = function() {
++  this.shader.dispose()
++  this.pickShader.dispose()
++  this.positionBuffer.dispose()
++  this.colorBuffer.dispose()
++  this.idBuffer.dispose()
++  this.plot.removeObject(this)
++}
+ 
+-    var ptr    = 0
+-    var gridTicks = [[], []]
+-    for(var dim=0; dim<2; ++dim) {
+-      var localTicks = gridTicks[dim]
+-      var axisTicks = ticks[dim]
+-      var lo = bounds[dim]
+-      var hi = bounds[dim+2]
+-      for(var i=0; i<axisTicks.length; ++i) {
+-        var x = (axisTicks[i].x - lo) / (hi - lo)
+-        localTicks.push(x)
+-        for(var j=0; j<6; ++j) {
+-          data[ptr++] = x
+-          data[ptr++] = OFFSET_X[j]
+-          data[ptr++] = OFFSET_Y[j]
+-        }
+-      }
+-    }
++function createHeatmap2D(plot, options) {
++  var gl = plot.gl
+ 
+-    this.ticks = gridTicks
+-    this.vbo.update(data)
+-  }
+-})()
++  var shader     = createShader(gl, shaders.vertex, shaders.fragment)
++  var pickShader = createShader(gl, shaders.pickVertex, shaders.pickFragment)
++
++  var positionBuffer = createBuffer(gl)
++  var colorBuffer    = createBuffer(gl)
++  var idBuffer       = createBuffer(gl)
++
++  var heatmap = new GLHeatmap2D(
++    plot,
++    shader,
++    pickShader,
++    positionBuffer,
++    colorBuffer,
++    idBuffer)
+ 
+-proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
+-  this.tickShader.dispose()
+-}
++  heatmap.update(options)
++  plot.addObject(heatmap)
+ 
+-function createGrid(plot) {
+-  var gl     = plot.gl
+-  var vbo    = createBuffer(gl)
+-  var shader = createShader(gl, shaders.gridVert, shaders.gridFrag)
+-  var tickShader = createShader(gl, shaders.tickVert, shaders.gridFrag)
+-  var grid   = new Grid(plot, vbo, shader, tickShader)
+-  return grid
++  return heatmap
+ }
+ 
+-},{"./shaders":82,"binary-search-bounds":84,"gl-buffer":66,"gl-shader":96}],81:[function(require,module,exports){
++},{"./lib/shaders":74,"binary-search-bounds":75,"gl-buffer":63,"gl-shader":96,"iota-array":116,"typedarray-pool":162}],74:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createLines
+-
+-var createBuffer = require('gl-buffer')
+-var createShader = require('gl-shader')
+ 
+-var shaders = require('./shaders')
+ 
+-function Lines(plot, vbo, shader) {
+-  this.plot   = plot
+-  this.vbo    = vbo
+-  this.shader = shader
++module.exports = {
++  fragment:     "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
++  vertex:       "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  fragColor = color;\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n",
++  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragId;\nvoid main() {\n  gl_FragColor = fragId;\n}\n",
++  pickVertex:   "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 viewTransform;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id / 255.0;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n"
+ }
+ 
+-var proto = Lines.prototype
++},{}],75:[function(require,module,exports){
++arguments[4][45][0].apply(exports,arguments)
++},{"dup":45}],76:[function(require,module,exports){
+ 
+-proto.bind = function() {
+-  var shader = this.shader
+-  this.vbo.bind()
+-  this.shader.bind()
+-  shader.attributes.coord.pointer()
+-  shader.uniforms.screenBox = this.plot.screenBox
+-}
+ 
+-proto.drawLine = (function() {
+-  var start = [0,0]
+-  var end   = [0,0]
+-  return function(startX, startY, endX, endY, width, color) {
+-    var plot       = this.plot
+-    var shader     = this.shader
+-    var gl         = plot.gl
++exports.lineVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\nvoid main() {\n  vec2 dir = (matrix * vec3(d, 0)).xy;\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = 0.5 * width *\n    normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n}\n"
++exports.lineFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}\n"
++exports.mitreVertex   = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 p;\n\nuniform mat3  matrix;\nuniform vec2 screenShape;\nuniform float radius;\n\nvoid main() {\n  vec3 pp = matrix * vec3(p, 1);\n  gl_Position  = vec4(pp.xy, 0, pp.z);\n  gl_PointSize = radius;\n}\n"
++exports.mitreFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}\n"
++exports.pickVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\nattribute vec4 pick0, pick1;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = width *\n    normalize(screenShape.yx * vec2(d.y, -d.x)) / screenShape.xy;\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}\n"
++exports.pickFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}\n"
++exports.fillVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 projectAxis;\nuniform float projectValue;\nuniform float depth;\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 p = base.xy / base.z;\n  if(d.y < 0.0 || (d.y == 0.0 && d.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}\n"
++exports.fillFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
+ 
+-    start[0] = startX
+-    start[1] = startY
+-    end[0]   = endX
+-    end[1]   = endY
++},{}],77:[function(require,module,exports){
++'use strict'
+ 
+-    shader.uniforms.start  = start
+-    shader.uniforms.end    = end
+-    shader.uniforms.width  = width * plot.pixelRatio
+-    shader.uniforms.color  = color
++module.exports = createLinePlot
+ 
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
+-  }
+-}())
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var createTexture = require('gl-texture2d')
++var ndarray = require('ndarray')
++var pool = require('typedarray-pool')
+ 
+-proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
+-}
++var SHADERS = require('./lib/shaders')
+ 
+-function createLines(plot) {
+-  var gl  = plot.gl
+-  var vbo = createBuffer(gl, [
+-    -1,-1,
+-    -1,1,
+-    1,-1,
+-    1,1])
+-  var shader  = createShader(gl, shaders.lineVert, shaders.lineFrag)
+-  var lines   = new Lines(plot, vbo, shader)
+-  return lines
+-}
++function GLLine2D(
++  plot,
++  dashPattern,
++  lineBuffer,
++  pickBuffer,
++  lineShader,
++  mitreShader,
++  fillShader,
++  pickShader) {
+ 
+-},{"./shaders":82,"gl-buffer":66,"gl-shader":96}],82:[function(require,module,exports){
+-'use strict'
++  this.plot         = plot
++  this.dashPattern  = dashPattern
++  this.lineBuffer   = lineBuffer
++  this.pickBuffer   = pickBuffer
++  this.lineShader   = lineShader
++  this.mitreShader  = mitreShader
++  this.fillShader   = fillShader
++  this.pickShader   = pickShader
++  this.usingDashes  = false
+ 
++  this.bounds     = [Infinity, Infinity, -Infinity, -Infinity]
+ 
++  this.width      = 1
++  this.color      = [0,0,1,1]
+ 
+-var FRAGMENT = "precision lowp float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = vec4(color.xyz * color.w, color.w);\n}\n"
++  //Fill to axes
++  this.fill       = [false, false, false, false]
++  this.fillColor  = [[0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1]]
+ 
+-module.exports = {
+-  lineVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 start, end;\nuniform float width;\n\nvec2 perp(vec2 v) {\n  return vec2(v.y, -v.x);\n}\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  vec2 delta = normalize(perp(start - end));\n  vec2 offset = mix(start, end, 0.5 * (coord.y+1.0));\n  gl_Position = vec4(screen(offset + 0.5 * width * delta * coord.x), 0, 1);\n}\n",
+-  lineFrag: FRAGMENT,
+-  textVert: "#define GLSLIFY 1\nattribute vec3 textCoordinate;\n\nuniform vec2 dataScale, dataShift, dataAxis, screenOffset, textScale;\nuniform float angle;\n\nvoid main() {\n  float dataOffset  = textCoordinate.z;\n  vec2 glyphOffset  = textCoordinate.xy;\n  mat2 glyphMatrix = mat2(cos(angle), sin(angle), -sin(angle), cos(angle));\n  vec2 screenCoordinate = dataAxis * (dataScale * dataOffset + dataShift) +\n    glyphMatrix * glyphOffset * textScale + screenOffset;\n  gl_Position = vec4(screenCoordinate, 0, 1);\n}\n",
+-  textFrag: FRAGMENT,
+-  gridVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale;\nuniform float lineWidth;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  pos += 10.0 * dataCoord.y * vec2(dataAxis.y, -dataAxis.x) + dataCoord.z * lineWidth;\n  gl_Position = vec4(pos, 0, 1);\n}\n",
+-  gridFrag: FRAGMENT,
+-  boxVert:  "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 lo, hi;\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  gl_Position = vec4(screen(mix(lo, hi, coord)), 0, 1);\n}\n",
+-  tickVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale, screenOffset, tickScale;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  gl_Position = vec4(pos + tickScale*dataCoord.yz + screenOffset, 0, 1);\n}\n"
++  this.data       = null
++  this.numPoints  = 0
++  this.vertCount  = 0
++
++  this.pickOffset = 0
++
++  this.lodBuffer = []
+ }
+ 
+-},{}],83:[function(require,module,exports){
+-'use strict'
++var proto = GLLine2D.prototype
+ 
+-module.exports = createTextElements
++proto.draw = (function() {
++var MATRIX = [1, 0, 0,
++              0, 1, 0,
++              0, 0, 1]
++var SCREEN_SHAPE = [0,0]
++var PX_AXIS = [1,0]
++var NX_AXIS = [-1,0]
++var PY_AXIS = [0,1]
++var NY_AXIS = [0,-1]
++return function() {
++  var plot      = this.plot
++  var color     = this.color
++  var width     = this.width
++  var numPoints = this.numPoints
++  var bounds    = this.bounds
++  var count     = this.vertCount
+ 
+-var createBuffer = require('gl-buffer')
+-var createShader = require('gl-shader')
+-var getText      = require('text-cache')
+-var bsearch      = require('binary-search-bounds')
+-var shaders      = require('./shaders')
++  if(!count) {
++    return
++  }
+ 
+-function TextElements(plot, vbo, shader) {
+-  this.plot         = plot
+-  this.vbo          = vbo
+-  this.shader       = shader
+-  this.tickOffset   = [[],[]]
+-  this.tickX        = [[],[]]
+-  this.labelOffset  = [0,0]
+-  this.labelCount   = [0,0]
+-}
++  var gl        = plot.gl
++  var viewBox   = plot.viewBox
++  var dataBox   = plot.dataBox
++  var pixelRatio = plot.pixelRatio
+ 
+-var proto = TextElements.prototype
++  var boundX  = bounds[2] - bounds[0]
++  var boundY  = bounds[3] - bounds[1]
++  var dataX   = dataBox[2] - dataBox[0]
++  var dataY   = dataBox[3] - dataBox[1]
++  var screenX = viewBox[2] - viewBox[0]
++  var screenY = viewBox[3] - viewBox[1]
+ 
+-proto.drawTicks = (function() {
+-  var DATA_AXIS = [0,0]
+-  var SCREEN_OFFSET = [0,0]
+-  var ZERO_2 = [0,0]
++  MATRIX[0] = 2.0 * boundX / dataX
++  MATRIX[4] = 2.0 * boundY / dataY
++  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-  return function(axis) {
+-    var plot        = this.plot
+-    var shader      = this.shader
+-    var tickX       = this.tickX[axis]
+-    var tickOffset  = this.tickOffset[axis]
+-    var gl          = plot.gl
+-    var viewBox     = plot.viewBox
+-    var dataBox     = plot.dataBox
+-    var screenBox   = plot.screenBox
+-    var pixelRatio  = plot.pixelRatio
+-    var tickEnable  = plot.tickEnable
+-    var tickPad     = plot.tickPad
+-    var textColor   = plot.tickColor
+-    var textAngle   = plot.tickAngle
+-    var tickLength  = plot.tickMarkLength
++  SCREEN_SHAPE[0] = screenX
++  SCREEN_SHAPE[1] = screenY
+ 
+-    var labelEnable = plot.labelEnable
+-    var labelPad    = plot.labelPad
+-    var labelColor  = plot.labelColor
+-    var labelAngle  = plot.labelAngle
+-    var labelOffset = this.labelOffset[axis]
+-    var labelCount  = this.labelCount[axis]
++  var buffer    = this.lineBuffer
++  buffer.bind()
+ 
+-    var start = bsearch.lt(tickX, dataBox[axis])
+-    var end   = bsearch.le(tickX, dataBox[axis+2])
++  var fill = this.fill
+ 
+-    DATA_AXIS[0]    = DATA_AXIS[1] = 0
+-    DATA_AXIS[axis] = 1
++  if(fill[0] || fill[1] || fill[2] || fill[3]) {
+ 
+-    SCREEN_OFFSET[axis] = (viewBox[2+axis] + viewBox[axis]) / (screenBox[2+axis] - screenBox[axis]) - 1.0
++    var fillShader = this.fillShader
++    fillShader.bind()
+ 
+-    var screenScale = 2.0 / screenBox[2+(axis^1)] - screenBox[axis^1]
++    var fillUniforms = fillShader.uniforms
++    fillUniforms.matrix = MATRIX
++    fillUniforms.depth = plot.nextDepthValue()
+ 
+-    SCREEN_OFFSET[axis^1] = screenScale * viewBox[axis^1] - 1.0
+-    if(tickEnable[axis]) {
+-      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * tickPad[axis]
+-      if(start < end && tickOffset[end] > tickOffset[start]) {
+-        shader.uniforms.dataAxis     = DATA_AXIS
+-        shader.uniforms.screenOffset = SCREEN_OFFSET
+-        shader.uniforms.color        = textColor[axis]
+-        shader.uniforms.angle        = textAngle[axis]
+-        gl.drawArrays(
+-          gl.TRIANGLES,
+-          tickOffset[start],
+-          tickOffset[end] - tickOffset[start])
+-      }
++    var fillAttributes = fillShader.attributes
++    fillAttributes.a.pointer(gl.FLOAT, false, 16, 0)
++    fillAttributes.d.pointer(gl.FLOAT, false, 16, 8)
++
++    gl.depthMask(true)
++    gl.enable(gl.DEPTH_TEST)
++
++    var fillColor = this.fillColor
++    if(fill[0]) {
++      fillUniforms.color        = fillColor[0]
++      fillUniforms.projectAxis  = NX_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
+     }
+-    if(labelEnable[axis] && labelCount) {
+-      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * labelPad[axis]
+-      shader.uniforms.dataAxis     = ZERO_2
+-      shader.uniforms.screenOffset = SCREEN_OFFSET
+-      shader.uniforms.color        = labelColor[axis]
+-      shader.uniforms.angle        = labelAngle[axis]
+-      gl.drawArrays(
+-        gl.TRIANGLES,
+-        labelOffset,
+-        labelCount)
++
++    if(fill[1]) {
++      fillUniforms.color        = fillColor[1]
++      fillUniforms.projectAxis  = NY_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
+     }
+ 
+-    SCREEN_OFFSET[axis^1] = screenScale * viewBox[2+(axis^1)] - 1.0
+-    if(tickEnable[axis+2]) {
+-      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * tickPad[axis+2]
+-      if(start < end && tickOffset[end] > tickOffset[start]) {
+-        shader.uniforms.dataAxis     = DATA_AXIS
+-        shader.uniforms.screenOffset = SCREEN_OFFSET
+-        shader.uniforms.color        = textColor[axis+2]
+-        shader.uniforms.angle        = textAngle[axis+2]
+-        gl.drawArrays(
+-          gl.TRIANGLES,
+-          tickOffset[start],
+-          tickOffset[end] - tickOffset[start])
+-      }
++    if(fill[2]) {
++      fillUniforms.color        = fillColor[2]
++      fillUniforms.projectAxis  = PX_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
+     }
+-    if(labelEnable[axis+2] && labelCount) {
+-      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * labelPad[axis+2]
+-      shader.uniforms.dataAxis     = ZERO_2
+-      shader.uniforms.screenOffset = SCREEN_OFFSET
+-      shader.uniforms.color        = labelColor[axis+2]
+-      shader.uniforms.angle        = labelAngle[axis+2]
+-      gl.drawArrays(
+-        gl.TRIANGLES,
+-        labelOffset,
+-        labelCount)
++
++    if(fill[3]) {
++      fillUniforms.color        = fillColor[3]
++      fillUniforms.projectAxis  = PY_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
+     }
+ 
++    gl.depthMask(false)
++    gl.disable(gl.DEPTH_TEST)
+   }
+-})()
+ 
+-proto.drawTitle = (function() {
+-  var DATA_AXIS = [0,0]
+-  var SCREEN_OFFSET = [0,0]
++  var shader    = this.lineShader
++  shader.bind()
+ 
+-  return function() {
+-    var plot        = this.plot
+-    var shader      = this.shader
+-    var gl          = plot.gl
+-    var screenBox   = plot.screenBox
+-    var titleCenter = plot.titleCenter
+-    var titleAngle  = plot.titleAngle
+-    var titleColor  = plot.titleColor
+-    var titleCenter = plot.titleCenter
+-    var pixelRatio  = plot.pixelRatio
++  var uniforms = shader.uniforms
++  uniforms.matrix = MATRIX
++  uniforms.color  = color
++  uniforms.width  = width * pixelRatio
++  uniforms.screenShape = SCREEN_SHAPE
++  uniforms.dashPattern = this.dashPattern.bind()
++  uniforms.dashLength = this.dashLength * pixelRatio
+ 
+-    if(!this.titleCount) {
+-      return
+-    }
++  var attributes = shader.attributes
++  attributes.a.pointer(gl.FLOAT, false, 16, 0)
++  attributes.d.pointer(gl.FLOAT, false, 16, 8)
+ 
+-    for(var i=0; i<2; ++i) {
+-      SCREEN_OFFSET[i] = 2.0 * (titleCenter[i]*pixelRatio - screenBox[i]) /
+-        (screenBox[2+i] - screenBox[i]) - 1
+-    }
++  gl.drawArrays(gl.TRIANGLES, 0, count)
+ 
+-    shader.bind()
+-    shader.uniforms.dataAxis      = DATA_AXIS
+-    shader.uniforms.screenOffset  = SCREEN_OFFSET
+-    shader.uniforms.angle         = titleAngle
+-    shader.uniforms.color         = titleColor
++  //Draw mitres
++  if(width > 2 && !this.usingDashes) {
++    var mshader = this.mitreShader
++    mshader.bind()
+ 
+-    gl.drawArrays(gl.TRIANGLES, this.titleOffset, this.titleCount)
++    var muniforms = mshader.uniforms
++    muniforms.matrix = MATRIX
++    muniforms.color  = color
++    muniforms.screenShape = SCREEN_SHAPE
++    muniforms.radius = width * pixelRatio
++
++    mshader.attributes.p.pointer(gl.FLOAT, false, 48, 0)
++    gl.drawArrays(gl.POINTS, 0, (count/3)|0)
+   }
++}
+ })()
+ 
+-proto.bind = (function() {
+-  var DATA_SHIFT = [0,0]
+-  var DATA_SCALE = [0,0]
+-  var TEXT_SCALE = [0,0]
+-
+-  return function() {
++proto.drawPick = (function() {
++  var MATRIX = [1, 0, 0,
++                0, 1, 0,
++                0, 0, 1]
++  var SCREEN_SHAPE = [0,0]
++  var PICK_OFFSET = [0,0,0,0]
++  return function(pickOffset) {
+     var plot      = this.plot
+-    var shader    = this.shader
+-    var bounds    = plot._tickBounds
+-    var dataBox   = plot.dataBox
+-    var screenBox = plot.screenBox
+-    var viewBox   = plot.viewBox
+-
+-    shader.bind()
++    var shader    = this.pickShader
++    var buffer    = this.lineBuffer
++    var pickBuffer= this.pickBuffer
++    var width     = this.width
++    var numPoints = this.numPoints
++    var bounds    = this.bounds
++    var count     = this.vertCount
+ 
+-    //Set up coordinate scaling uniforms
+-    for(var i=0; i<2; ++i) {
++    var gl        = plot.gl
++    var viewBox   = plot.viewBox
++    var dataBox   = plot.dataBox
++    var pixelRatio = plot.pickPixelRatio
+ 
+-      var lo = bounds[i]
+-      var hi = bounds[i+2]
+-      var boundScale = hi - lo
+-      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
+-      var dataWidth   = (dataBox[i+2] - dataBox[i])
++    var boundX  = bounds[2]  - bounds[0]
++    var boundY  = bounds[3]  - bounds[1]
++    var dataX   = dataBox[2] - dataBox[0]
++    var dataY   = dataBox[3] - dataBox[1]
++    var screenX = viewBox[2] - viewBox[0]
++    var screenY = viewBox[3] - viewBox[1]
+ 
+-      var viewLo = viewBox[i]
+-      var viewHi = viewBox[i+2]
+-      var viewScale = viewHi - viewLo
+-      var screenLo = screenBox[i]
+-      var screenHi = screenBox[i+2]
+-      var screenScale = screenHi - screenLo
++    this.pickOffset = pickOffset
+ 
+-      DATA_SCALE[i] = 2.0 * boundScale / dataWidth * viewScale / screenScale
+-      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth * viewScale / screenScale
++    if(!count) {
++      return pickOffset + numPoints
+     }
+ 
+-    TEXT_SCALE[1] = 2.0 * plot.pixelRatio / (screenBox[3] - screenBox[1])
+-    TEXT_SCALE[0] = TEXT_SCALE[1] * (screenBox[3] - screenBox[1]) / (screenBox[2] - screenBox[0])
+-
+-    shader.uniforms.dataScale = DATA_SCALE
+-    shader.uniforms.dataShift = DATA_SHIFT
+-    shader.uniforms.textScale = TEXT_SCALE
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-    //Set attributes
+-    this.vbo.bind()
+-    shader.attributes.textCoordinate.pointer()
+-  }
+-})()
++    SCREEN_SHAPE[0] = screenX
++    SCREEN_SHAPE[1] = screenY
+ 
+-proto.update = function(options) {
+-  var vertices  = []
+-  var axesTicks = options.ticks
+-  var bounds    = options.bounds
++    PICK_OFFSET[0] =  pickOffset       & 0xff
++    PICK_OFFSET[1] = (pickOffset>>>8)  & 0xff
++    PICK_OFFSET[2] = (pickOffset>>>16) & 0xff
++    PICK_OFFSET[3] =  pickOffset>>>24
+ 
+-  for(var dimension=0; dimension<2; ++dimension) {
+-    var offsets = [Math.floor(vertices.length/3)], tickX = [-Infinity]
++    shader.bind()
+ 
+-    //Copy vertices over to buffer
+-    var ticks = axesTicks[dimension]
+-    for(var i=0; i<ticks.length; ++i) {
+-      var tick  = ticks[i]
+-      var x     = tick.x
+-      var text  = tick.text
+-      var font  = tick.font || 'sans-serif'
+-      var scale = (tick.fontSize || 12)
++    var uniforms = shader.uniforms
++    uniforms.matrix      = MATRIX
++    uniforms.width       = width * pixelRatio
++    uniforms.pickOffset  = PICK_OFFSET
++    uniforms.screenShape = SCREEN_SHAPE
+ 
+-      var data = getText(font, text).data
++    var attributes = shader.attributes
+ 
+-      var coordScale = 1.0 / (bounds[dimension+2] - bounds[dimension])
+-      var coordShift = bounds[dimension]
++    buffer.bind()
++    attributes.a.pointer(gl.FLOAT, false, 16, 0)
++    attributes.d.pointer(gl.FLOAT, false, 16, 8)
+ 
+-      for(var j=0; j<data.length; j+=2) {
+-        vertices.push(
+-           data[j]  *scale,
+-          -data[j+1]*scale,
+-          (x - coordShift) * coordScale)
+-      }
++    pickBuffer.bind()
++    attributes.pick0.pointer(gl.UNSIGNED_BYTE, false, 8, 0)
++    attributes.pick1.pointer(gl.UNSIGNED_BYTE, false, 8, 4)
+ 
+-      offsets.push(Math.floor(vertices.length/3))
+-      tickX.push(x)
+-    }
++    gl.drawArrays(gl.TRIANGLES, 0, count)
+ 
+-    this.tickOffset[dimension] = offsets
+-    this.tickX[dimension] = tickX
++    return pickOffset + numPoints
+   }
++})()
+ 
+-  //Add labels
+-  for(var dimension=0; dimension<2; ++dimension) {
+-    this.labelOffset[dimension] = Math.floor(vertices.length/3)
+-
+-    var data  = getText(options.labelFont[dimension], options.labels[dimension]).data
+-    var scale = options.labelSize[dimension]
+-    for(var i=0; i<data.length; i+=2) {
+-      vertices.push(data[i]*scale, -data[i+1]*scale, 0)
+-    }
+-
+-    this.labelCount[dimension] =
+-      Math.floor(vertices.length/3) - this.labelOffset[dimension]
++proto.pick = function(x, y, value) {
++  var pickOffset = this.pickOffset
++  var pointCount = this.numPoints
++  if(value < pickOffset || value >= pickOffset + pointCount) {
++    return null
+   }
+-
+-  //Add title
+-  this.titleOffset = Math.floor(vertices.length/3)
+-  var data = getText(options.titleFont, options.title).data
+-  var scale = options.titleSize
+-  for(var i=0; i<data.length; i+=2) {
+-    vertices.push(data[i]*scale, -data[i+1]*scale, 0)
++  var pointId = value - pickOffset
++  var points = this.data
++  return {
++    object:    this,
++    pointId:   pointId,
++    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+   }
+-  this.titleCount = Math.floor(vertices.length/3) - this.titleOffset
+-
+-  //Upload new vertices
+-  this.vbo.update(vertices)
+-}
+-
+-proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
+ }
+ 
+-function createTextElements(plot) {
+-  var gl = plot.gl
+-  var vbo = createBuffer(gl)
+-  var shader = createShader(gl, shaders.textVert, shaders.textFrag)
+-  var text = new TextElements(plot, vbo, shader)
+-  return text
++function deepCopy(arr) {
++  return arr.map(function(x) {
++    return x.slice()
++  })
+ }
+ 
+-},{"./shaders":82,"binary-search-bounds":84,"gl-buffer":66,"gl-shader":96,"text-cache":147}],84:[function(require,module,exports){
+-arguments[4][21][0].apply(exports,arguments)
+-},{"dup":21}],85:[function(require,module,exports){
+-'use strict'
++proto.update = function(options) {
++  options = options || {}
+ 
+-module.exports = createGLPlot2D
++  var gl = this.plot.gl
+ 
+-var createPick = require('gl-select-static')
++  var connectGaps = !!options.connectGaps
+ 
+-var createGrid = require('./lib/grid')
+-var createText = require('./lib/text')
+-var createLine = require('./lib/line')
+-var createBox  = require('./lib/box')
++  this.color = (options.color || [0,0,1,1]).slice()
++  this.width = +(options.width || 1)
+ 
+-function GLPlot2D(gl, pickBuffer) {
+-  this.gl               = gl
+-  this.pickBuffer       = pickBuffer
++  this.fill      = (options.fill || [false,false,false,false]).slice()
++  this.fillColor = deepCopy(options.fillColor || [[0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1]])
+ 
+-  this.screenBox        = [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight]
+-  this.viewBox          = [0, 0, 0, 0]
+-  this.dataBox          = [-10, -10, 10, 10]
++  var dashes = options.dashes || [1]
++  var dashLength = 0
++  for(var i=0; i<dashes.length; ++i) {
++    dashLength += dashes[i]
++  }
++  var dashData = pool.mallocUint8(dashLength)
++  var ptr = 0
++  var fillColor = 255
++  for(var i=0; i<dashes.length; ++i) {
++    for(var j=0; j<dashes[i]; ++j) {
++      dashData[ptr++] = fillColor
++    }
++    fillColor ^= 255
++  }
++  this.dashPattern.dispose()
++  this.usingDashes = dashes.length > 1
+ 
+-  this.gridLineEnable   = [true,true]
+-  this.gridLineWidth    = [1,1]
+-  this.gridLineColor    = [[0,0,0,1],
+-                           [0,0,0,1]]
++  this.dashPattern = createTexture(gl,
++    ndarray(dashData, [dashLength, 1, 4], [1, 0, 0]))
++  this.dashPattern.minFilter = gl.NEAREST
++  this.dashPattern.magFilter = gl.NEAREST
++  this.dashLength = dashLength
++  pool.free(dashData)
+ 
+-  this.pixelRatio       = 1
++  var data = options.positions
++  this.data = data
+ 
+-  this.tickMarkLength   = [0,0,0,0]
+-  this.tickMarkWidth    = [0,0,0,0]
+-  this.tickMarkColor    = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++  var bounds = this.bounds
++  bounds[0] = bounds[1] = Infinity
++  bounds[2] = bounds[3] = -Infinity
+ 
+-  this.tickPad          = [15,15,15,15]
+-  this.tickAngle        = [0,0,0,0]
+-  this.tickEnable       = [true,true,true,true]
+-  this.tickColor        = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++  var numPoints = this.numPoints = data.length>>>1
++  if(numPoints === 0) {
++    return
++  }
+ 
+-  this.labelPad         = [15,15,15,15]
+-  this.labelAngle       = [0,Math.PI/2,0,3.0*Math.PI/2]
+-  this.labelEnable      = [true,true,true,true]
+-  this.labelColor       = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++  for(var i=0; i<numPoints; ++i) {
++    var ax = data[2*i]
++    var ay = data[2*i+1]
+ 
+-  this.titleCenter      = [0,0]
+-  this.titleEnable      = true
+-  this.titleAngle       = 0
+-  this.titleColor       = [0,0,0,1]
++    if (isNaN(ax) || isNaN(ay)) {
++      continue
++    }
+ 
+-  this.borderColor      = [0,0,0,0]
+-  this.backgroundColor  = [0,0,0,0]
++    bounds[0] = Math.min(bounds[0], ax)
++    bounds[1] = Math.min(bounds[1], ay)
++    bounds[2] = Math.max(bounds[2], ax)
++    bounds[3] = Math.max(bounds[3], ay)
++  }
+ 
+-  this.zeroLineEnable   = [true, true]
+-  this.zeroLineWidth    = [4, 4]
+-  this.zeroLineColor    = [[0, 0, 0, 1],[0, 0, 0, 1]]
++  if(bounds[0] === bounds[2]) {
++    bounds[2] += 1
++  }
++  if(bounds[3] === bounds[1]) {
++    bounds[3] += 1
++  }
+ 
+-  this.borderLineEnable = [true,true,true,true]
+-  this.borderLineWidth  = [2,2,2,2]
+-  this.borderLineColor  = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++  //Generate line data
++  var lineData    = pool.mallocFloat32(24*(numPoints-1))
++  var pickData    = pool.mallocUint32(12*(numPoints-1))
++  var lineDataPtr = lineData.length
++  var pickDataPtr = pickData.length
++  var ptr = numPoints
+ 
+-  //Drawing parameters
+-  this.grid             = null
+-  this.text             = null
+-  this.line             = null
+-  this.box              = null
+-  this.objects          = []
+-  this.overlays         = []
++  var count = 0
+ 
+-  this._tickBounds      = [Infinity, Infinity, -Infinity, -Infinity]
++  while(ptr > 1) {
++    var id = --ptr
++    var ax = data[2*ptr]
++    var ay = data[2*ptr+1]
+ 
+-  this.dirty        = false
+-  this.pickDirty    = false
+-  this.pickDelay    = 120
+-  this.pickRadius   = 10
+-  this._pickTimeout = null
+-  this._drawPick    = this.drawPick.bind(this)
++    var next = id-1
++    var bx = data[2*next]
++    var by = data[2*next+1]
+ 
+-  this._depthCounter = 0
+-}
++    if (isNaN(ax) || isNaN(ay) || isNaN(bx) || isNaN(by)) {
++      continue
++    }
+ 
+-var proto = GLPlot2D.prototype
++    count += 1
+ 
+-proto.setDirty = function() {
+-  this.dirty = this.pickDirty = true
+-}
++    ax = (ax - bounds[0]) / (bounds[2] - bounds[0])
++    ay = (ay - bounds[1]) / (bounds[3] - bounds[1])
+ 
+-proto.setOverlayDirty = function() {
+-  this.dirty = true
+-}
++    bx = (bx - bounds[0]) / (bounds[2] - bounds[0])
++    by = (by - bounds[1]) / (bounds[3] - bounds[1])
+ 
+-proto.nextDepthValue = function() {
+-  return (this._depthCounter++) / 65536.0
+-}
++    var dx = bx - ax
++    var dy = by - ay
+ 
+-function lerp(a, b, t) {
+-  var s = 0.5 * (t + 1.0)
+-  return Math.floor((1.0-s)*a + s*b)|0
+-}
++    var akey0 = id     | (1<<24)
++    var akey1 = (id-1)
++    var bkey0 = id
++    var bkey1 = (id-1) | (1<<24)
+ 
+-proto.draw = (function() {
+-var TICK_MARK_BOX = [0,0,0,0]
+-return function() {
+-  var gl         = this.gl
+-  var screenBox  = this.screenBox
+-  var viewPixels = this.viewBox
+-  var dataBox    = this.dataBox
+-  var pixelRatio = this.pixelRatio
+-  var grid       = this.grid
+-  var line       = this.line
+-  var text       = this.text
+-  var objects    = this.objects
++    lineData[--lineDataPtr] = -dy
++    lineData[--lineDataPtr] = -dx
++    lineData[--lineDataPtr] = ay
++    lineData[--lineDataPtr] = ax
++    pickData[--pickDataPtr] = akey0
++    pickData[--pickDataPtr] = akey1
+ 
+-  this._depthCounter = 0
++    lineData[--lineDataPtr] = dy
++    lineData[--lineDataPtr] = dx
++    lineData[--lineDataPtr] = by
++    lineData[--lineDataPtr] = bx
++    pickData[--pickDataPtr] = bkey0
++    pickData[--pickDataPtr] = bkey1
+ 
+-  if(this.pickDirty) {
+-    if(this._pickTimeout) {
+-      clearTimeout(this._pickTimeout)
+-    }
+-    this.pickDirty = false
+-    this._pickTimeout = setTimeout(this._drawPick, this.pickDelay)
+-  }
++    lineData[--lineDataPtr] = -dy
++    lineData[--lineDataPtr] = -dx
++    lineData[--lineDataPtr] = by
++    lineData[--lineDataPtr] = bx
++    pickData[--pickDataPtr] = bkey0
++    pickData[--pickDataPtr] = bkey1
+ 
+-  if(!this.dirty) {
+-    return
+-  }
+-  this.dirty = false
++    lineData[--lineDataPtr] = dy
++    lineData[--lineDataPtr] = dx
++    lineData[--lineDataPtr] = by
++    lineData[--lineDataPtr] = bx
++    pickData[--pickDataPtr] = bkey0
++    pickData[--pickDataPtr] = bkey1
+ 
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++    lineData[--lineDataPtr] = -dy
++    lineData[--lineDataPtr] = -dx
++    lineData[--lineDataPtr] = ay
++    lineData[--lineDataPtr] = ax
++    pickData[--pickDataPtr] = akey0
++    pickData[--pickDataPtr] = akey1
+ 
+-  //Turn on scissor
+-  gl.enable(gl.SCISSOR_TEST)
++    lineData[--lineDataPtr] = dy
++    lineData[--lineDataPtr] = dx
++    lineData[--lineDataPtr] = ay
++    lineData[--lineDataPtr] = ax
++    pickData[--pickDataPtr] = akey0
++    pickData[--pickDataPtr] = akey1
++  }
+ 
+-  //Turn off depth buffer
+-  gl.disable(gl.DEPTH_TEST)
+-  gl.depthFunc(gl.LESS)
+-  gl.depthMask(false)
++  this.vertCount = 6 * count
++  this.lineBuffer.update(lineData.subarray(lineDataPtr))
++  this.pickBuffer.update(pickData.subarray(pickDataPtr))
+ 
+-  //Configure premultiplied alpha blending
+-  gl.enable(gl.BLEND)
+-  gl.blendEquation(gl.FUNC_ADD, gl.FUNC_ADD);
+-  gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
++  pool.free(lineData)
++  pool.free(pickData)
++}
+ 
+-  //Draw border
+-  gl.scissor(
+-    screenBox[0],
+-    screenBox[1],
+-    screenBox[2]-screenBox[0],
+-    screenBox[3]-screenBox[1])
+-  var borderColor = this.borderColor
+-  gl.clearColor(
+-    borderColor[0]*borderColor[3],
+-    borderColor[1]*borderColor[3],
+-    borderColor[2]*borderColor[3],
+-    borderColor[3])
+-  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
++proto.dispose = function() {
++  this.plot.removeObject(this)
++  this.lineBuffer.dispose()
++  this.pickBuffer.dispose()
++  this.lineShader.dispose()
++  this.mitreShader.dispose()
++  this.fillShader.dispose()
++  this.pickShader.dispose()
++  this.dashPattern.dispose()
++}
+ 
+-  //Draw center pane
+-  gl.scissor(
+-    viewPixels[0],
+-    viewPixels[1],
+-    viewPixels[2]-viewPixels[0],
+-    viewPixels[3]-viewPixels[1])
+-  gl.viewport(
+-    viewPixels[0],
+-    viewPixels[1],
+-    viewPixels[2]-viewPixels[0],
+-    viewPixels[3]-viewPixels[1])
+-  var backgroundColor = this.backgroundColor
+-  gl.clearColor(
+-    backgroundColor[0]*backgroundColor[3],
+-    backgroundColor[1]*backgroundColor[3],
+-    backgroundColor[2]*backgroundColor[3],
+-    backgroundColor[3])
+-  gl.clear(gl.COLOR_BUFFER_BIT)
++function createLinePlot(plot, options) {
++  var gl = plot.gl
++  var lineBuffer  = createBuffer(gl)
++  var pickBuffer  = createBuffer(gl)
++  var dashPattern = createTexture(gl, [1,1])
++  var lineShader  = createShader(gl, SHADERS.lineVertex,  SHADERS.lineFragment)
++  var mitreShader = createShader(gl, SHADERS.mitreVertex, SHADERS.mitreFragment)
++  var fillShader  = createShader(gl, SHADERS.fillVertex,  SHADERS.fillFragment)
++  var pickShader  = createShader(gl, SHADERS.pickVertex,  SHADERS.pickFragment)
++  var linePlot    = new GLLine2D(
++    plot,
++    dashPattern,
++    lineBuffer,
++    pickBuffer,
++    lineShader,
++    mitreShader,
++    fillShader,
++    pickShader)
++  plot.addObject(linePlot)
++  linePlot.update(options)
++  return linePlot
++}
+ 
+-  //Draw grid
+-  grid.draw()
++},{"./lib/shaders":76,"gl-buffer":63,"gl-shader":96,"gl-texture2d":104,"ndarray":123,"typedarray-pool":162}],78:[function(require,module,exports){
++module.exports = fromQuat;
+ 
+-  //Draw zero lines separately
+-  var zeroLineEnable = this.zeroLineEnable
+-  var zeroLineColor  = this.zeroLineColor
+-  var zeroLineWidth  = this.zeroLineWidth
+-  if(zeroLineEnable[0] || zeroLineEnable[1]) {
+-    line.bind()
+-    for(var i=0; i<2; ++i) {
+-      if(!zeroLineEnable[i] ||
+-        !(dataBox[i] <= 0 && dataBox[i+2] >= 0)) {
+-        continue
+-      }
++/**
++ * Creates a matrix from a quaternion rotation.
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @returns {mat4} out
++ */
++function fromQuat(out, q) {
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-      var zeroIntercept = screenBox[i] -
+-        dataBox[i] * (screenBox[i+2] - screenBox[i]) / (dataBox[i+2] - dataBox[i])
++        xx = x * x2,
++        yx = y * x2,
++        yy = y * y2,
++        zx = z * x2,
++        zy = z * y2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-      if(i === 0) {
+-        line.drawLine(
+-          zeroIntercept, screenBox[1], zeroIntercept, screenBox[3],
+-          zeroLineWidth[i],
+-          zeroLineColor[i])
+-      } else {
+-        line.drawLine(
+-          screenBox[0], zeroIntercept, screenBox[2], zeroIntercept,
+-          zeroLineWidth[i],
+-          zeroLineColor[i])
+-      }
+-    }
+-  }
++    out[0] = 1 - yy - zz;
++    out[1] = yx + wz;
++    out[2] = zx - wy;
++    out[3] = 0;
+ 
+-  //Draw traces
+-  for(var i=0; i<objects.length; ++i) {
+-    objects[i].draw()
+-  }
++    out[4] = yx - wz;
++    out[5] = 1 - xx - zz;
++    out[6] = zy + wx;
++    out[7] = 0;
+ 
+-  //Return viewport to default
+-  gl.viewport(
+-    screenBox[0],
+-    screenBox[1],
+-    screenBox[2]-screenBox[0],
+-    screenBox[3]-screenBox[1])
+-  gl.scissor(
+-    screenBox[0],
+-    screenBox[1],
+-    screenBox[2]-screenBox[0],
+-    screenBox[3]-screenBox[1])
++    out[8] = zx + wy;
++    out[9] = zy - wx;
++    out[10] = 1 - xx - yy;
++    out[11] = 0;
+ 
+-  //Draw tick marks
+-  this.grid.drawTickMarks()
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
+ 
+-  //Draw line elements
+-  line.bind()
++    return out;
++};
++},{}],79:[function(require,module,exports){
++'use strict'
+ 
+-  //Draw border lines
+-  var borderLineEnable = this.borderLineEnable
+-  var borderLineWidth  = this.borderLineWidth
+-  var borderLineColor  = this.borderLineColor
+-  if(borderLineEnable[1]) {
+-    line.drawLine(
+-      viewPixels[0], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
+-      viewPixels[0], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
+-      borderLineWidth[1], borderLineColor[1])
+-  }
+-  if(borderLineEnable[0]) {
+-    line.drawLine(
+-      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[1],
+-      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[1],
+-      borderLineWidth[0], borderLineColor[0])
+-  }
+-  if(borderLineEnable[3]) {
+-    line.drawLine(
+-      viewPixels[2], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
+-      viewPixels[2], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
+-      borderLineWidth[3], borderLineColor[3])
+-  }
+-  if(borderLineEnable[2]) {
+-    line.drawLine(
+-      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[3],
+-      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[3],
+-      borderLineWidth[2], borderLineColor[2])
+-  }
++module.exports = createBoxes
+ 
+-  //Draw text elements
+-  text.bind()
+-  for(var i=0; i<2; ++i) {
+-    text.drawTicks(i)
+-  }
+-  if(this.titleEnable) {
+-    text.drawTitle()
+-  }
++var createBuffer = require('gl-buffer')
++var createShader = require('gl-shader')
+ 
+-  //Draw other overlay elements (select boxes, etc.)
+-  var overlays = this.overlays
+-  for(var i=0; i<overlays.length; ++i) {
+-    overlays[i].draw()
+-  }
++var shaders = require('./shaders')
+ 
+-  //Turn off scissor test
+-  gl.disable(gl.SCISSOR_TEST)
+-  gl.disable(gl.BLEND)
+-  gl.depthMask(true)
++function Boxes(plot, vbo, shader) {
++  this.plot   = plot
++  this.vbo    = vbo
++  this.shader = shader
+ }
+-})()
+-
+-proto.drawPick = (function() {
+-
+-return function() {
+-  var pickBuffer = this.pickBuffer
+-  var gl = this.gl
+-
+-  this._pickTimeout = null
+-  pickBuffer.begin()
+ 
+-  var pickOffset = 1
+-  var objects = this.objects
+-  for(var i=0; i<objects.length; ++i) {
+-    pickOffset = objects[i].drawPick(pickOffset)
+-  }
++var proto = Boxes.prototype
+ 
+-  pickBuffer.end()
++proto.bind = function() {
++  var shader = this.shader
++  this.vbo.bind()
++  this.shader.bind()
++  shader.attributes.coord.pointer()
++  shader.uniforms.screenBox = this.plot.screenBox
+ }
+-})()
+-
+-proto.pick = (function() {
+-return function(x, y) {
+-  var pixelRatio     = this.pixelRatio
+-  var pickPixelRatio = this.pickPixelRatio
+-  var viewBox        = this.viewBox
+ 
+-  var scrX = Math.round((x - viewBox[0] / pixelRatio) * pickPixelRatio)|0
+-  var scrY = Math.round((y - viewBox[1] / pixelRatio) * pickPixelRatio)|0
++proto.drawBox = (function() {
++  var lo = [0,0]
++  var hi = [0,0]
++  return function(loX, loY, hiX, hiY, color) {
++    var plot       = this.plot
++    var shader     = this.shader
++    var gl         = plot.gl
+ 
+-  var pickResult = this.pickBuffer.query(scrX, scrY, this.pickRadius)
+-  if(!pickResult) {
+-    return null
+-  }
++    lo[0] = loX
++    lo[1] = loY
++    hi[0] = hiX
++    hi[1] = hiY
+ 
+-  var pickValue = pickResult.id +
+-    (pickResult.value[0]<<8)  +
+-    (pickResult.value[1]<<16) +
+-    (pickResult.value[2]<<24)
++    shader.uniforms.lo     = lo
++    shader.uniforms.hi     = hi
++    shader.uniforms.color  = color
+ 
+-  var objects = this.objects
+-  for(var i=0; i<objects.length; ++i) {
+-    var result = objects[i].pick(scrX, scrY, pickValue)
+-    if(result) {
+-      return result
+-    }
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
+   }
++}())
+ 
+-  return null
++proto.dispose = function() {
++  this.vbo.dispose()
++  this.shader.dispose()
+ }
+-})()
+ 
+-function deepClone(array) {
+-  var result = array.slice()
+-  for(var i=0; i<result.length; ++i) {
+-    result[i] = result[i].slice()
+-  }
+-  return result
++function createBoxes(plot) {
++  var gl  = plot.gl
++  var vbo = createBuffer(gl, [
++    0,0,
++    0,1,
++    1,0,
++    1,1])
++  var shader  = createShader(gl, shaders.boxVert, shaders.lineFrag)
++  return new Boxes(plot, vbo, shader)
+ }
+ 
+-function compareTicks(a, b) {
+-  return a.x - b.x
+-}
++},{"./shaders":82,"gl-buffer":63,"gl-shader":96}],80:[function(require,module,exports){
++'use strict'
+ 
+-proto.setScreenBox = function(nbox) {
+-  var screenBox = this.screenBox
+-  var pixelRatio = this.pixelRatio
++module.exports = createGrid
+ 
+-  screenBox[0] = Math.round(nbox[0] * pixelRatio) | 0
+-  screenBox[1] = Math.round(nbox[1] * pixelRatio) | 0
+-  screenBox[2] = Math.round(nbox[2] * pixelRatio) | 0
+-  screenBox[3] = Math.round(nbox[3] * pixelRatio) | 0
++var createBuffer  = require('gl-buffer')
++var createShader  = require('gl-shader')
++var bsearch       = require('binary-search-bounds')
++var shaders       = require('./shaders')
+ 
+-  this.setDirty()
++function Grid(plot, vbo, shader, tickShader) {
++  this.plot   = plot
++  this.vbo    = vbo
++  this.shader = shader
++  this.tickShader = tickShader
++  this.ticks  = [[], []]
+ }
+ 
+-proto.setDataBox = function(nbox) {
+-  var dataBox = this.dataBox
+-
+-  var different =
+-    dataBox[0] !== nbox[0] ||
+-    dataBox[1] !== nbox[1] ||
+-    dataBox[2] !== nbox[2] ||
+-    dataBox[3] !== nbox[3]
++function compareTickNum(a, b) {
++  return a - b
++}
+ 
+-  if(different) {
+-    dataBox[0] = nbox[0]
+-    dataBox[1] = nbox[1]
+-    dataBox[2] = nbox[2]
+-    dataBox[3] = nbox[3]
++var proto = Grid.prototype
+ 
+-    this.setDirty()
+-  }
+-}
++proto.draw = (function() {
+ 
+-proto.setViewBox = function(nbox) {
+-  var pixelRatio = this.pixelRatio
+-  var viewBox = this.viewBox
++  var DATA_SHIFT = [0,0]
++  var DATA_SCALE = [0,0]
++  var DATA_AXIS  = [0,0]
+ 
+-  viewBox[0] = Math.round(nbox[0] * pixelRatio)|0
+-  viewBox[1] = Math.round(nbox[1] * pixelRatio)|0
+-  viewBox[2] = Math.round(nbox[2] * pixelRatio)|0
+-  viewBox[3] = Math.round(nbox[3] * pixelRatio)|0
++  return function() {
++    var plot       = this.plot
++    var vbo        = this.vbo
++    var shader     = this.shader
++    var ticks      = this.ticks
++    var gl         = plot.gl
++    var bounds     = plot._tickBounds
++    var dataBox    = plot.dataBox
++    var viewPixels = plot.viewBox
++    var lineWidth  = plot.gridLineWidth
++    var gridColor  = plot.gridLineColor
++    var gridEnable = plot.gridLineEnable
++    var pixelRatio = plot.pixelRatio
+ 
+-  var pickPixelRatio = this.pickPixelRatio
+-  this.pickBuffer.shape = [
+-    Math.round((nbox[2] - nbox[0]) * pickPixelRatio)|0,
+-    Math.round((nbox[3] - nbox[1]) * pickPixelRatio)|0 ]
++    for(var i=0; i<2; ++i) {
++      var lo = bounds[i]
++      var hi = bounds[i+2]
++      var boundScale = hi - lo
++      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
++      var dataWidth   = dataBox[i+2] - dataBox[i]
++      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
++      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
++    }
+ 
+-  this.setDirty()
+-}
++    shader.bind()
++    vbo.bind()
++    shader.attributes.dataCoord.pointer()
++    shader.uniforms.dataShift = DATA_SHIFT
++    shader.uniforms.dataScale = DATA_SCALE
+ 
+-proto.update = function(options) {
+-  options = options || {}
++    var offset = 0
++    for(var i=0; i<2; ++i) {
++      DATA_AXIS[0] = DATA_AXIS[1] = 0
++      DATA_AXIS[i] = 1
++      shader.uniforms.dataAxis  = DATA_AXIS
++      shader.uniforms.lineWidth = lineWidth[i] / (viewPixels[i+2] - viewPixels[i]) * pixelRatio
++      shader.uniforms.color     = gridColor[i]
+ 
+-  var gl = this.gl
++      var size = ticks[i].length * 6
++      if(gridEnable[i] && size) {
++        gl.drawArrays(gl.TRIANGLES, offset, size)
++      }
++      offset += size
++    }
++  }
++})()
+ 
+-  this.pixelRatio      = options.pixelRatio || 1
++proto.drawTickMarks = (function() {
++  var DATA_SHIFT = [0,0]
++  var DATA_SCALE = [0,0]
++  var X_AXIS     = [1,0]
++  var Y_AXIS     = [0,1]
++  var SCR_OFFSET = [0,0]
++  var TICK_SCALE = [0,0]
+ 
+-  var pixelRatio       = this.pixelRatio
+-  this.pickPixelRatio  = Math.max(pixelRatio, 1)
++  return function() {
++    var plot       = this.plot
++    var vbo        = this.vbo
++    var shader     = this.tickShader
++    var ticks      = this.ticks
++    var gl         = plot.gl
++    var bounds     = plot._tickBounds
++    var dataBox    = plot.dataBox
++    var viewBox    = plot.viewBox
++    var pixelRatio = plot.pixelRatio
++    var screenBox  = plot.screenBox
+ 
+-  this.setScreenBox(options.screenBox ||
+-    [0, 0, gl.drawingBufferWidth/pixelRatio, gl.drawingBufferHeight/pixelRatio])
++    var screenWidth  = screenBox[2] - screenBox[0]
++    var screenHeight = screenBox[3] - screenBox[1]
++    var viewWidth    = viewBox[2]   - viewBox[0]
++    var viewHeight   = viewBox[3]   - viewBox[1]
+ 
+-  var screenBox = this.screenBox
+-  this.setViewBox(options.viewBox ||
+-    [0.125*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
+-     0.125*(this.screenBox[3]-this.screenBox[1])/pixelRatio,
+-     0.875*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
+-     0.875*(this.screenBox[3]-this.screenBox[1])/pixelRatio])
++    for(var i=0; i<2; ++i) {
++      var lo = bounds[i]
++      var hi = bounds[i+2]
++      var boundScale = hi - lo
++      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
++      var dataWidth   = (dataBox[i+2] - dataBox[i])
++      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
++      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
++    }
+ 
+-  var viewBox = this.viewBox
+-  var aspectRatio = (viewBox[2] - viewBox[0]) / (viewBox[3] - viewBox[1])
+-  this.setDataBox(options.dataBox || [-10, -10/aspectRatio, 10, 10/aspectRatio])
++    DATA_SCALE[0] *= viewWidth / screenWidth
++    DATA_SHIFT[0] *= viewWidth / screenWidth
+ 
+-  this.borderColor     = (options.borderColor     || [0,0,0,0]).slice()
+-  this.backgroundColor = (options.backgroundColor || [0,0,0,0]).slice()
++    DATA_SCALE[1] *= viewHeight / screenHeight
++    DATA_SHIFT[1] *= viewHeight / screenHeight
+ 
+-  this.gridLineEnable  = (options.gridLineEnable || [true,true]).slice()
+-  this.gridLineWidth   = (options.gridLineWidth || [1,1]).slice()
+-  this.gridLineColor   = deepClone(options.gridLineColor ||
+-    [[0.5,0.5,0.5,1],[0.5,0.5,0.5,1]])
++    shader.bind()
++    vbo.bind()
+ 
+-  this.zeroLineEnable   = (options.zeroLineEnable || [true, true]).slice()
+-  this.zeroLineWidth    = (options.zeroLineWidth || [4, 4]).slice()
+-  this.zeroLineColor    = deepClone(options.zeroLineColor ||
+-    [[0, 0, 0, 1],[0, 0, 0, 1]])
++    shader.attributes.dataCoord.pointer()
+ 
+-  this.tickMarkLength   = (options.tickMarkLength || [0,0,0,0]).slice()
+-  this.tickMarkWidth    = (options.tickMarkWidth || [0,0,0,0]).slice()
+-  this.tickMarkColor    = deepClone(options.tickMarkColor ||
+-    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++    var uniforms = shader.uniforms
++    uniforms.dataShift = DATA_SHIFT
++    uniforms.dataScale = DATA_SCALE
+ 
+-  this.titleCenter      = (options.titleCenter || [
+-    0.5*(viewBox[0]+viewBox[2])/pixelRatio,(viewBox[3]+120)/pixelRatio]).slice()
+-  this.titleEnable      = !('titleEnable' in options) || !!options.titleEnable
+-  this.titleAngle       = options.titleAngle || 0
+-  this.titleColor       = (options.titleColor || [0,0,0,1]).slice()
++    var tickMarkLength = plot.tickMarkLength
++    var tickMarkWidth  = plot.tickMarkWidth
++    var tickMarkColor  = plot.tickMarkColor
+ 
+-  this.labelPad         = (options.labelPad || [15,15,15,15]).slice()
+-  this.labelAngle       = (options.labelAngle ||
+-    [0,Math.PI/2,0,3.0*Math.PI/2]).slice()
+-  this.labelEnable      = (options.labelEnable || [true,true,true,true]).slice()
+-  this.labelColor       = deepClone(options.labelColor ||
+-    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++    var xTicksOffset = 0
++    var yTicksOffset = ticks[0].length * 6
+ 
+-  this.tickPad         = (options.tickPad || [15,15,15,15]).slice()
+-  this.tickAngle       = (options.tickAngle || [0,0,0,0]).slice()
+-  this.tickEnable      = (options.tickEnable || [true,true,true,true]).slice()
+-  this.tickColor       = deepClone(options.tickColor ||
+-    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++    var xStart = Math.min(bsearch.ge(ticks[0], (dataBox[0] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
++    var xEnd   = Math.min(bsearch.gt(ticks[0], (dataBox[2] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
++    var xOffset = xTicksOffset + 6 * xStart
++    var xCount  = 6 * Math.max(0, xEnd - xStart)
+ 
+-  this.borderLineEnable = (options.borderLineEnable ||
+-                            [true,true,true,true]).slice()
+-  this.borderLineWidth  = (options.borderLineWidth || [2,2,2,2]).slice()
+-  this.borderLineColor  = deepClone(options.borderLineColor ||
+-                          [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]])
++    var yStart = Math.min(bsearch.ge(ticks[1], (dataBox[1] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
++    var yEnd   = Math.min(bsearch.gt(ticks[1], (dataBox[3] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
++    var yOffset = yTicksOffset + 6 * yStart
++    var yCount  = 6 * Math.max(0, yEnd - yStart)
+ 
+-  var ticks = options.ticks || [ [], [] ]
++    SCR_OFFSET[0]         = 2.0 * (viewBox[0] - tickMarkLength[1]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkLength[1] * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkWidth[1]  * pixelRatio / screenHeight
+ 
+-  //Compute bounds on ticks
+-  var bounds = this._tickBounds
+-  bounds[0] = bounds[1] =  Infinity
+-  bounds[2] = bounds[3] = -Infinity
+-  for(var i=0; i<2; ++i) {
+-    var axisTicks = ticks[i].slice(0)
+-    if(axisTicks.length === 0) {
+-      continue
++    if(yCount) {
++      uniforms.color        = tickMarkColor[1]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = Y_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
+     }
+-    axisTicks.sort(compareTicks)
+-    bounds[i]   = Math.min(bounds[i], axisTicks[0].x)
+-    bounds[i+2] = Math.max(bounds[i+2], axisTicks[axisTicks.length-1].x)
+-  }
+-
+-  //Update grid
+-  this.grid.update({
+-    bounds: bounds,
+-    ticks:  ticks
+-  })
+ 
+-  //Update text
+-  this.text.update({
+-    bounds:     bounds,
+-    ticks:      ticks,
+-    labels:     options.labels    || ['x', 'y'],
+-    labelSize:  options.labelSize || [12,12],
+-    labelFont:  options.labelFont || ['sans-serif', 'sans-serif'],
+-    title:      options.title     || '',
+-    titleSize:  options.titleSize || 18,
+-    titleFont:  options.titleFont || 'sans-serif'
+-  })
++    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = 2.0 * (viewBox[1] - tickMarkLength[0]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkWidth[0]  * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkLength[0] * pixelRatio / screenHeight
+ 
+-  this.setDirty()
+-}
++    if(xCount) {
++      uniforms.color        = tickMarkColor[0]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = X_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
++    }
+ 
+-proto.dispose = function() {
+-  this.box.dispose()
+-  this.grid.dispose()
+-  this.text.dispose()
+-  this.line.dispose()
+-  for(var i=this.objects.length-1; i>=0; --i) {
+-    this.objects[i].dispose()
+-  }
+-  this.objects.length = 0
+-  for(var i=this.overlays.length-1; i>=0; --i) {
+-    this.overlays[i].dispose()
+-  }
+-  this.overlays.length = 0
++    SCR_OFFSET[0]         = 2.0 * (viewBox[2] + tickMarkLength[3]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkLength[3] * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkWidth[3]  * pixelRatio / screenHeight
+ 
+-  this.gl = null
+-}
++    if(yCount) {
++      uniforms.color        = tickMarkColor[3]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = Y_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
++    }
+ 
+-proto.addObject = function(object) {
+-  if(this.objects.indexOf(object) < 0) {
+-    this.objects.push(object)
+-    this.setDirty()
+-  }
+-}
++    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = 2.0 * (viewBox[3] + tickMarkLength[2]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkWidth[2]  * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkLength[2] * pixelRatio / screenHeight
+ 
+-proto.removeObject = function(object) {
+-  var objects = this.objects
+-  for(var i=0; i<objects.length; ++i) {
+-    if(objects[i] === object) {
+-      objects.splice(i,1)
+-      this.setDirty()
+-      break
++    if(xCount) {
++      uniforms.color        = tickMarkColor[2]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = X_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
+     }
+   }
+-}
++})()
+ 
+-proto.addOverlay = function(object) {
+-  if(this.overlays.indexOf(object) < 0) {
+-    this.overlays.push(object)
+-    this.setOverlayDirty()
+-  }
+-}
++proto.update = (function() {
++  var OFFSET_X = [1,  1, -1, -1,  1, -1]
++  var OFFSET_Y = [1, -1,  1,  1, -1, -1]
+ 
+-proto.removeOverlay = function(object) {
+-  var objects = this.overlays
+-  for(var i=0; i<objects.length; ++i) {
+-    if(objects[i] === object) {
+-      objects.splice(i,1)
+-      this.setOverlayDirty()
+-      break
+-    }
+-  }
+-}
++  return function(options) {
++    var ticks  = options.ticks
++    var bounds = options.bounds
++    var data   = new Float32Array(6 * 3 * (ticks[0].length + ticks[1].length))
+ 
+-function createGLPlot2D(options) {
+-  var gl = options.gl
+-  var pickBuffer = createPick(gl, [
+-    gl.drawingBufferWidth, gl.drawingBufferHeight])
+-  var plot = new GLPlot2D(gl, pickBuffer)
+-  plot.grid = createGrid(plot)
+-  plot.text = createText(plot)
+-  plot.line = createLine(plot)
+-  plot.box  = createBox(plot)
+-  plot.update(options)
+-  return plot
+-}
++    var zeroLineEnable = this.plot.zeroLineEnable
+ 
+-},{"./lib/box":79,"./lib/grid":80,"./lib/line":81,"./lib/text":83,"gl-select-static":95}],86:[function(require,module,exports){
+-'use strict'
++    var ptr    = 0
++    var gridTicks = [[], []]
++    for(var dim=0; dim<2; ++dim) {
++      var localTicks = gridTicks[dim]
++      var axisTicks = ticks[dim]
++      var lo = bounds[dim]
++      var hi = bounds[dim+2]
++      for(var i=0; i<axisTicks.length; ++i) {
++        var x = (axisTicks[i].x - lo) / (hi - lo)
++        localTicks.push(x)
++        for(var j=0; j<6; ++j) {
++          data[ptr++] = x
++          data[ptr++] = OFFSET_X[j]
++          data[ptr++] = OFFSET_Y[j]
++        }
++      }
++    }
+ 
++    this.ticks = gridTicks
++    this.vbo.update(data)
++  }
++})()
+ 
++proto.dispose = function() {
++  this.vbo.dispose()
++  this.shader.dispose()
++  this.tickShader.dispose()
++}
+ 
+-module.exports = {
+-  vertex:       "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  fragColor = color;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
+-  fragment:     "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
+-  pickVertex:   "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 id;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\nuniform vec4 pickOffset;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
+-  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"
++function createGrid(plot) {
++  var gl     = plot.gl
++  var vbo    = createBuffer(gl)
++  var shader = createShader(gl, shaders.gridVert, shaders.gridFrag)
++  var tickShader = createShader(gl, shaders.tickVert, shaders.gridFrag)
++  var grid   = new Grid(plot, vbo, shader, tickShader)
++  return grid
+ }
+ 
+-},{}],87:[function(require,module,exports){
++},{"./shaders":82,"binary-search-bounds":84,"gl-buffer":63,"gl-shader":96}],81:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createFancyScatter2D
++module.exports = createLines
+ 
+-var createShader = require('gl-shader')
+ var createBuffer = require('gl-buffer')
+-var textCache = require('text-cache')
+-var pool = require('typedarray-pool')
+-var vectorizeText = require('vectorize-text')
+-var shaders = require('./lib/shaders')
+-
+-var BOUNDARIES = {}
+-
+-function getBoundary(glyph) {
+-  if(glyph in BOUNDARIES) {
+-    return BOUNDARIES[glyph]
+-  }
+-
+-  var polys = vectorizeText(glyph, {
+-    polygons: true,
+-    font: 'sans-serif',
+-    textAlign: 'left',
+-    textBaseline: 'alphabetic'
+-  })
+-
+-  var coords  = []
+-  var normals = []
++var createShader = require('gl-shader')
+ 
+-  polys.forEach(function(loops) {
+-    loops.forEach(function(loop) {
+-      for(var i=0; i<loop.length; ++i) {
+-        var a = loop[(i + loop.length - 1) % loop.length]
+-        var b = loop[i]
+-        var c = loop[(i + 1) % loop.length]
+-        var d = loop[(i + 2) % loop.length]
++var shaders = require('./shaders')
+ 
+-        var dx = b[0] - a[0]
+-        var dy = b[1] - a[1]
+-        var dl = Math.sqrt(dx*dx + dy*dy)
+-        dx /= dl
+-        dy /= dl
++function Lines(plot, vbo, shader) {
++  this.plot   = plot
++  this.vbo    = vbo
++  this.shader = shader
++}
+ 
+-        coords.push(a[0], a[1] + 1.4)
+-        normals.push(dy, -dx)
+-        coords.push(a[0], a[1] + 1.4)
+-        normals.push(-dy, dx)
+-        coords.push(b[0], b[1] + 1.4)
+-        normals.push(-dy, dx)
++var proto = Lines.prototype
+ 
+-        coords.push(b[0], b[1] + 1.4)
+-        normals.push(-dy, dx)
+-        coords.push(a[0], a[1] + 1.4)
+-        normals.push(dy, -dx)
+-        coords.push(b[0], b[1] + 1.4)
+-        normals.push(dy, -dx)
++proto.bind = function() {
++  var shader = this.shader
++  this.vbo.bind()
++  this.shader.bind()
++  shader.attributes.coord.pointer()
++  shader.uniforms.screenBox = this.plot.screenBox
++}
+ 
+-        var ex = d[0] - c[0]
+-        var ey = d[1] - c[1]
+-        var el = Math.sqrt(ex*ex + ey*ey)
+-        ex /= el
+-        ey /= el
++proto.drawLine = (function() {
++  var start = [0,0]
++  var end   = [0,0]
++  return function(startX, startY, endX, endY, width, color) {
++    var plot       = this.plot
++    var shader     = this.shader
++    var gl         = plot.gl
+ 
+-        coords.push(b[0], b[1]+1.4)
+-        normals.push(dy, -dx)
+-        coords.push(b[0], b[1]+1.4)
+-        normals.push(-dy, dx)
+-        coords.push(c[0], c[1]+1.4)
+-        normals.push(-ey, ex)
++    start[0] = startX
++    start[1] = startY
++    end[0]   = endX
++    end[1]   = endY
+ 
+-        coords.push(c[0], c[1]+1.4)
+-        normals.push(-ey, ex)
+-        coords.push(b[0], b[1]+1.4)
+-        normals.push(ey, -ex)
+-        coords.push(c[0], c[1]+1.4)
+-        normals.push(ey, -ex)
+-      }
+-    })
+-  })
++    shader.uniforms.start  = start
++    shader.uniforms.end    = end
++    shader.uniforms.width  = width * plot.pixelRatio
++    shader.uniforms.color  = color
+ 
+-  var bounds = [Infinity, Infinity, -Infinity, -Infinity]
+-  for(var i=0; i<coords.length; i+=2) {
+-    for(var j=0; j<2; ++j) {
+-      bounds[j]   = Math.min(bounds[j],   coords[i+j])
+-      bounds[2+j] = Math.max(bounds[2+j], coords[i+j])
+-    }
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
+   }
++}())
+ 
+-  return BOUNDARIES[glyph] = {
+-    coords:  coords,
+-    normals: normals,
+-    bounds:  bounds
+-  }
++proto.dispose = function() {
++  this.vbo.dispose()
++  this.shader.dispose()
+ }
+ 
++function createLines(plot) {
++  var gl  = plot.gl
++  var vbo = createBuffer(gl, [
++    -1,-1,
++    -1,1,
++    1,-1,
++    1,1])
++  var shader  = createShader(gl, shaders.lineVert, shaders.lineFrag)
++  var lines   = new Lines(plot, vbo, shader)
++  return lines
++}
+ 
+-var VERTEX_SIZE       = 9
+-var VERTEX_SIZE_BYTES = VERTEX_SIZE * 4
++},{"./shaders":82,"gl-buffer":63,"gl-shader":96}],82:[function(require,module,exports){
++'use strict'
+ 
+-function GLScatterFancy(
+-    plot,
+-    shader,
+-    pickShader,
+-    positionBuffer,
+-    offsetBuffer,
+-    colorBuffer,
+-    idBuffer) {
+-  this.plot           = plot
+-  this.shader         = shader
+-  this.pickShader     = pickShader
+-  this.positionBuffer = positionBuffer
+-  this.offsetBuffer   = offsetBuffer
+-  this.colorBuffer    = colorBuffer
+-  this.idBuffer       = idBuffer
+-  this.bounds         = [Infinity, Infinity, -Infinity, -Infinity]
+-  this.numPoints      = 0
+-  this.numVertices    = 0
+-  this.pickOffset     = 0
+-  this.points         = null
++
++
++var FRAGMENT = "precision lowp float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = vec4(color.xyz * color.w, color.w);\n}\n"
++
++module.exports = {
++  lineVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 start, end;\nuniform float width;\n\nvec2 perp(vec2 v) {\n  return vec2(v.y, -v.x);\n}\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  vec2 delta = normalize(perp(start - end));\n  vec2 offset = mix(start, end, 0.5 * (coord.y+1.0));\n  gl_Position = vec4(screen(offset + 0.5 * width * delta * coord.x), 0, 1);\n}\n",
++  lineFrag: FRAGMENT,
++  textVert: "#define GLSLIFY 1\nattribute vec3 textCoordinate;\n\nuniform vec2 dataScale, dataShift, dataAxis, screenOffset, textScale;\nuniform float angle;\n\nvoid main() {\n  float dataOffset  = textCoordinate.z;\n  vec2 glyphOffset  = textCoordinate.xy;\n  mat2 glyphMatrix = mat2(cos(angle), sin(angle), -sin(angle), cos(angle));\n  vec2 screenCoordinate = dataAxis * (dataScale * dataOffset + dataShift) +\n    glyphMatrix * glyphOffset * textScale + screenOffset;\n  gl_Position = vec4(screenCoordinate, 0, 1);\n}\n",
++  textFrag: FRAGMENT,
++  gridVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale;\nuniform float lineWidth;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  pos += 10.0 * dataCoord.y * vec2(dataAxis.y, -dataAxis.x) + dataCoord.z * lineWidth;\n  gl_Position = vec4(pos, 0, 1);\n}\n",
++  gridFrag: FRAGMENT,
++  boxVert:  "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 lo, hi;\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  gl_Position = vec4(screen(mix(lo, hi, coord)), 0, 1);\n}\n",
++  tickVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale, screenOffset, tickScale;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  gl_Position = vec4(pos + tickScale*dataCoord.yz + screenOffset, 0, 1);\n}\n"
+ }
+ 
+-var proto = GLScatterFancy.prototype
++},{}],83:[function(require,module,exports){
++'use strict'
+ 
+-;(function() {
+-  var MATRIX = [
+-    1, 0, 0,
+-    0, 1, 0,
+-    0, 0, 1
+-  ];
++module.exports = createTextElements
+ 
+-  var PIXEL_SCALE = [1, 1]
++var createBuffer = require('gl-buffer')
++var createShader = require('gl-shader')
++var getText      = require('text-cache')
++var bsearch      = require('binary-search-bounds')
++var shaders      = require('./shaders')
+ 
+-  function calcScales() {
+-    var plot          = this.plot
+-    var bounds        = this.bounds
++function TextElements(plot, vbo, shader) {
++  this.plot         = plot
++  this.vbo          = vbo
++  this.shader       = shader
++  this.tickOffset   = [[],[]]
++  this.tickX        = [[],[]]
++  this.labelOffset  = [0,0]
++  this.labelCount   = [0,0]
++}
++
++var proto = TextElements.prototype
++
++proto.drawTicks = (function() {
++  var DATA_AXIS = [0,0]
++  var SCREEN_OFFSET = [0,0]
++  var ZERO_2 = [0,0]
+ 
++  return function(axis) {
++    var plot        = this.plot
++    var shader      = this.shader
++    var tickX       = this.tickX[axis]
++    var tickOffset  = this.tickOffset[axis]
++    var gl          = plot.gl
+     var viewBox     = plot.viewBox
+     var dataBox     = plot.dataBox
++    var screenBox   = plot.screenBox
+     var pixelRatio  = plot.pixelRatio
++    var tickEnable  = plot.tickEnable
++    var tickPad     = plot.tickPad
++    var textColor   = plot.tickColor
++    var textAngle   = plot.tickAngle
++    var tickLength  = plot.tickMarkLength
+ 
+-    var boundX  = bounds[2] - bounds[0]
+-    var boundY  = bounds[3] - bounds[1]
+-    var dataX   = dataBox[2] - dataBox[0]
+-    var dataY   = dataBox[3] - dataBox[1]
++    var labelEnable = plot.labelEnable
++    var labelPad    = plot.labelPad
++    var labelColor  = plot.labelColor
++    var labelAngle  = plot.labelAngle
++    var labelOffset = this.labelOffset[axis]
++    var labelCount  = this.labelCount[axis]
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++    var start = bsearch.lt(tickX, dataBox[axis])
++    var end   = bsearch.le(tickX, dataBox[axis+2])
+ 
+-    var screenX = (viewBox[2] - viewBox[0])
+-    var screenY = (viewBox[3] - viewBox[1])
++    DATA_AXIS[0]    = DATA_AXIS[1] = 0
++    DATA_AXIS[axis] = 1
+ 
+-    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
+-    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
+-  }
++    SCREEN_OFFSET[axis] = (viewBox[2+axis] + viewBox[axis]) / (screenBox[2+axis] - screenBox[axis]) - 1.0
+ 
+-  proto.draw = function() {
+-    var plot          = this.plot
+-    var shader        = this.shader
+-    var numVertices   = this.numVertices
++    var screenScale = 2.0 / screenBox[2+(axis^1)] - screenBox[axis^1]
+ 
+-    if(!numVertices) {
+-      return
++    SCREEN_OFFSET[axis^1] = screenScale * viewBox[axis^1] - 1.0
++    if(tickEnable[axis]) {
++      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * tickPad[axis]
++      if(start < end && tickOffset[end] > tickOffset[start]) {
++        shader.uniforms.dataAxis     = DATA_AXIS
++        shader.uniforms.screenOffset = SCREEN_OFFSET
++        shader.uniforms.color        = textColor[axis]
++        shader.uniforms.angle        = textAngle[axis]
++        gl.drawArrays(
++          gl.TRIANGLES,
++          tickOffset[start],
++          tickOffset[end] - tickOffset[start])
++      }
++    }
++    if(labelEnable[axis] && labelCount) {
++      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * labelPad[axis]
++      shader.uniforms.dataAxis     = ZERO_2
++      shader.uniforms.screenOffset = SCREEN_OFFSET
++      shader.uniforms.color        = labelColor[axis]
++      shader.uniforms.angle        = labelAngle[axis]
++      gl.drawArrays(
++        gl.TRIANGLES,
++        labelOffset,
++        labelCount)
+     }
+ 
+-    var gl          = plot.gl
++    SCREEN_OFFSET[axis^1] = screenScale * viewBox[2+(axis^1)] - 1.0
++    if(tickEnable[axis+2]) {
++      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * tickPad[axis+2]
++      if(start < end && tickOffset[end] > tickOffset[start]) {
++        shader.uniforms.dataAxis     = DATA_AXIS
++        shader.uniforms.screenOffset = SCREEN_OFFSET
++        shader.uniforms.color        = textColor[axis+2]
++        shader.uniforms.angle        = textAngle[axis+2]
++        gl.drawArrays(
++          gl.TRIANGLES,
++          tickOffset[start],
++          tickOffset[end] - tickOffset[start])
++      }
++    }
++    if(labelEnable[axis+2] && labelCount) {
++      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * labelPad[axis+2]
++      shader.uniforms.dataAxis     = ZERO_2
++      shader.uniforms.screenOffset = SCREEN_OFFSET
++      shader.uniforms.color        = labelColor[axis+2]
++      shader.uniforms.angle        = labelAngle[axis+2]
++      gl.drawArrays(
++        gl.TRIANGLES,
++        labelOffset,
++        labelCount)
++    }
+ 
+-    calcScales.call(this)
++  }
++})()
+ 
+-    shader.bind()
++proto.drawTitle = (function() {
++  var DATA_AXIS = [0,0]
++  var SCREEN_OFFSET = [0,0]
+ 
+-    shader.uniforms.pixelScale = PIXEL_SCALE
+-    shader.uniforms.viewTransform = MATRIX
++  return function() {
++    var plot        = this.plot
++    var shader      = this.shader
++    var gl          = plot.gl
++    var screenBox   = plot.screenBox
++    var titleCenter = plot.titleCenter
++    var titleAngle  = plot.titleAngle
++    var titleColor  = plot.titleColor
++    var titleCenter = plot.titleCenter
++    var pixelRatio  = plot.pixelRatio
+ 
+-    this.positionBuffer.bind()
+-    shader.attributes.position.pointer()
++    if(!this.titleCount) {
++      return
++    }
+ 
+-    this.offsetBuffer.bind()
+-    shader.attributes.offset.pointer()
++    for(var i=0; i<2; ++i) {
++      SCREEN_OFFSET[i] = 2.0 * (titleCenter[i]*pixelRatio - screenBox[i]) /
++        (screenBox[2+i] - screenBox[i]) - 1
++    }
+ 
+-    this.colorBuffer.bind()
+-    shader.attributes.color.pointer(gl.UNSIGNED_BYTE, true)
++    shader.bind()
++    shader.uniforms.dataAxis      = DATA_AXIS
++    shader.uniforms.screenOffset  = SCREEN_OFFSET
++    shader.uniforms.angle         = titleAngle
++    shader.uniforms.color         = titleColor
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
++    gl.drawArrays(gl.TRIANGLES, this.titleOffset, this.titleCount)
+   }
++})()
+ 
+-  var PICK_OFFSET = [0,0,0,0]
++proto.bind = (function() {
++  var DATA_SHIFT = [0,0]
++  var DATA_SCALE = [0,0]
++  var TEXT_SCALE = [0,0]
+ 
+-  proto.drawPick = function(offset) {
+-    var plot          = this.plot
+-    var shader        = this.pickShader
+-    var numVertices   = this.numVertices
++  return function() {
++    var plot      = this.plot
++    var shader    = this.shader
++    var bounds    = plot._tickBounds
++    var dataBox   = plot.dataBox
++    var screenBox = plot.screenBox
++    var viewBox   = plot.viewBox
+ 
+-    var gl          = plot.gl
++    shader.bind()
+ 
+-    this.pickOffset = offset
++    //Set up coordinate scaling uniforms
++    for(var i=0; i<2; ++i) {
+ 
+-    if(!numVertices) {
+-      return offset
+-    }
++      var lo = bounds[i]
++      var hi = bounds[i+2]
++      var boundScale = hi - lo
++      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
++      var dataWidth   = (dataBox[i+2] - dataBox[i])
+ 
+-    for(var i=0; i<4; ++i) {
+-      PICK_OFFSET[i] = ((offset>>(i*8)) & 0xff)
++      var viewLo = viewBox[i]
++      var viewHi = viewBox[i+2]
++      var viewScale = viewHi - viewLo
++      var screenLo = screenBox[i]
++      var screenHi = screenBox[i+2]
++      var screenScale = screenHi - screenLo
++
++      DATA_SCALE[i] = 2.0 * boundScale / dataWidth * viewScale / screenScale
++      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth * viewScale / screenScale
+     }
+ 
+-    calcScales.call(this)
++    TEXT_SCALE[1] = 2.0 * plot.pixelRatio / (screenBox[3] - screenBox[1])
++    TEXT_SCALE[0] = TEXT_SCALE[1] * (screenBox[3] - screenBox[1]) / (screenBox[2] - screenBox[0])
+ 
+-    shader.bind()
++    shader.uniforms.dataScale = DATA_SCALE
++    shader.uniforms.dataShift = DATA_SHIFT
++    shader.uniforms.textScale = TEXT_SCALE
+ 
+-    shader.uniforms.pixelScale    = PIXEL_SCALE
+-    shader.uniforms.viewTransform = MATRIX
+-    shader.uniforms.pickOffset    = PICK_OFFSET
++    //Set attributes
++    this.vbo.bind()
++    shader.attributes.textCoordinate.pointer()
++  }
++})()
+ 
+-    this.positionBuffer.bind()
+-    shader.attributes.position.pointer()
++proto.update = function(options) {
++  var vertices  = []
++  var axesTicks = options.ticks
++  var bounds    = options.bounds
+ 
+-    this.offsetBuffer.bind()
+-    shader.attributes.offset.pointer()
++  for(var dimension=0; dimension<2; ++dimension) {
++    var offsets = [Math.floor(vertices.length/3)], tickX = [-Infinity]
+ 
+-    this.idBuffer.bind()
+-    shader.attributes.id.pointer(gl.UNSIGNED_BYTE, false)
++    //Copy vertices over to buffer
++    var ticks = axesTicks[dimension]
++    for(var i=0; i<ticks.length; ++i) {
++      var tick  = ticks[i]
++      var x     = tick.x
++      var text  = tick.text
++      var font  = tick.font || 'sans-serif'
++      var scale = (tick.fontSize || 12)
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
++      var data = getText(font, text).data
+ 
+-    return offset + this.numPoints
+-  }
+-})()
++      var coordScale = 1.0 / (bounds[dimension+2] - bounds[dimension])
++      var coordShift = bounds[dimension]
+ 
+-proto.pick = function(x, y, value) {
+-  var pickOffset = this.pickOffset
+-  var pointCount = this.numPoints
+-  if(value < pickOffset || value >= pickOffset + pointCount) {
+-    return null
+-  }
+-  var pointId = value - pickOffset
+-  var points   = this.points
+-  return {
+-    object:     this,
+-    pointId:    pointId,
+-    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+-  }
+-}
++      for(var j=0; j<data.length; j+=2) {
++        vertices.push(
++           data[j]  *scale,
++          -data[j+1]*scale,
++          (x - coordShift) * coordScale)
++      }
+ 
+-proto.update = function(options) {
+-  options = options || {}
++      offsets.push(Math.floor(vertices.length/3))
++      tickX.push(x)
++    }
+ 
+-  var positions     = options.positions    || []
+-  var colors        = options.colors       || []
+-  var glyphs        = options.glyphs       || []
+-  var sizes         = options.sizes        || []
+-  var borderWidths  = options.borderWidths || []
+-  var borderColors  = options.borderColors || []
++    this.tickOffset[dimension] = offsets
++    this.tickX[dimension] = tickX
++  }
+ 
+-  this.points = positions
++  //Add labels
++  for(var dimension=0; dimension<2; ++dimension) {
++    this.labelOffset[dimension] = Math.floor(vertices.length/3)
+ 
+-  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
+-  var numVertices = 0
+-  for(var i=0; i<glyphs.length; ++i) {
+-    numVertices += (
+-      textCache('sans-serif', glyphs[i]).data.length +
+-      getBoundary(glyphs[i]).coords.length
+-    )>> 1
+-    for(var j=0; j<2; ++j) {
+-      bounds[j]   = Math.min(bounds[j],   positions[2*i+j])
+-      bounds[2+j] = Math.max(bounds[2+j], positions[2*i+j])
++    var data  = getText(options.labelFont[dimension], options.labels[dimension]).data
++    var scale = options.labelSize[dimension]
++    for(var i=0; i<data.length; i+=2) {
++      vertices.push(data[i]*scale, -data[i+1]*scale, 0)
+     }
+-  }
+ 
+-  if(bounds[0] === bounds[2]) {
+-    bounds[2] += 1
++    this.labelCount[dimension] =
++      Math.floor(vertices.length/3) - this.labelOffset[dimension]
+   }
+-  if(bounds[3] === bounds[1]) {
+-    bounds[3] += 1
++
++  //Add title
++  this.titleOffset = Math.floor(vertices.length/3)
++  var data = getText(options.titleFont, options.title).data
++  var scale = options.titleSize
++  for(var i=0; i<data.length; i+=2) {
++    vertices.push(data[i]*scale, -data[i+1]*scale, 0)
+   }
++  this.titleCount = Math.floor(vertices.length/3) - this.titleOffset
+ 
+-  var sx = 1/(bounds[2] - bounds[0])
+-  var sy = 1/(bounds[3] - bounds[1])
+-  var tx = bounds[0]
+-  var ty = bounds[1]
++  //Upload new vertices
++  this.vbo.update(vertices)
++}
+ 
+-  var v_position = pool.mallocFloat32(2 * numVertices)
+-  var v_offset   = pool.mallocFloat32(2 * numVertices)
+-  var v_color    = pool.mallocUint8(4 * numVertices)
+-  var v_ids      = pool.mallocUint32(numVertices)
+-  var ptr = 0
++proto.dispose = function() {
++  this.vbo.dispose()
++  this.shader.dispose()
++}
+ 
+-  for(var i=0; i<glyphs.length; ++i) {
+-    var glyph = textCache('sans-serif', glyphs[i])
+-    var border = getBoundary(glyphs[i])
+-    var x = sx * (positions[2*i]   - tx)
+-    var y = sy * (positions[2*i+1] - ty)
+-    var s = sizes[i]
+-    var r = colors[4*i]   * 255.0
+-    var g = colors[4*i+1] * 255.0
+-    var b = colors[4*i+2] * 255.0
+-    var a = colors[4*i+3] * 255.0
++function createTextElements(plot) {
++  var gl = plot.gl
++  var vbo = createBuffer(gl)
++  var shader = createShader(gl, shaders.textVert, shaders.textFrag)
++  var text = new TextElements(plot, vbo, shader)
++  return text
++}
+ 
+-    var gx = 0.5*(border.bounds[0] + border.bounds[2])
+-    var gy = 0.5*(border.bounds[1] + border.bounds[3])
++},{"./shaders":82,"binary-search-bounds":84,"gl-buffer":63,"gl-shader":96,"text-cache":156}],84:[function(require,module,exports){
++arguments[4][45][0].apply(exports,arguments)
++},{"dup":45}],85:[function(require,module,exports){
++'use strict'
+ 
+-    for(var j=0; j<glyph.data.length; j+=2) {
+-      v_position[2*ptr]   = x
+-      v_position[2*ptr+1] = y
+-      v_offset[2*ptr]     = -s * (glyph.data[j]   - gx)
+-      v_offset[2*ptr+1]   = -s * (glyph.data[j+1] - gy)
+-      v_color[4*ptr]      = r
+-      v_color[4*ptr+1]    = g
+-      v_color[4*ptr+2]    = b
+-      v_color[4*ptr+3]    = a
+-      v_ids[ptr]          = i
++module.exports = createGLPlot2D
+ 
+-      ptr += 1
+-    }
++var createPick = require('gl-select-static')
+ 
+-    var w = borderWidths[i]
+-    r = borderColors[4*i]   * 255.0
+-    g = borderColors[4*i+1] * 255.0
+-    b = borderColors[4*i+2] * 255.0
+-    a = borderColors[4*i+3] * 255.0
++var createGrid = require('./lib/grid')
++var createText = require('./lib/text')
++var createLine = require('./lib/line')
++var createBox  = require('./lib/box')
+ 
+-    for(var j=0; j<border.coords.length; j+=2) {
+-      v_position[2*ptr]   = x
+-      v_position[2*ptr+1] = y
+-      v_offset[2*ptr]     = -(s*(border.coords[j]  -gx)+w*border.normals[j])
+-      v_offset[2*ptr+1]   = -(s*(border.coords[j+1]-gy)+w*border.normals[j+1])
+-      v_color[4*ptr]      = r
+-      v_color[4*ptr+1]    = g
+-      v_color[4*ptr+2]    = b
+-      v_color[4*ptr+3]    = a
+-      v_ids[ptr]          = i
++function GLPlot2D(gl, pickBuffer) {
++  this.gl               = gl
++  this.pickBuffer       = pickBuffer
+ 
+-      ptr += 1
+-    }
+-  }
++  this.screenBox        = [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight]
++  this.viewBox          = [0, 0, 0, 0]
++  this.dataBox          = [-10, -10, 10, 10]
+ 
+-  this.numPoints = glyphs.length
+-  this.numVertices = numVertices
++  this.gridLineEnable   = [true,true]
++  this.gridLineWidth    = [1,1]
++  this.gridLineColor    = [[0,0,0,1],
++                           [0,0,0,1]]
+ 
+-  this.positionBuffer.update(v_position)
+-  this.offsetBuffer.update(v_offset)
+-  this.colorBuffer.update(v_color)
+-  this.idBuffer.update(v_ids)
++  this.pixelRatio       = 1
+ 
+-  pool.free(v_position)
+-  pool.free(v_offset)
+-  pool.free(v_color)
+-  pool.free(v_ids)
+-}
++  this.tickMarkLength   = [0,0,0,0]
++  this.tickMarkWidth    = [0,0,0,0]
++  this.tickMarkColor    = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
+ 
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.pickShader.dispose()
+-  this.positionBuffer.dispose()
+-  this.offsetBuffer.dispose()
+-  this.colorBuffer.dispose()
+-  this.idBuffer.dispose()
+-  this.plot.removeObject(this)
+-}
++  this.tickPad          = [15,15,15,15]
++  this.tickAngle        = [0,0,0,0]
++  this.tickEnable       = [true,true,true,true]
++  this.tickColor        = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
+ 
+-function createFancyScatter2D(plot, options) {
+-  var gl = plot.gl
++  this.labelPad         = [15,15,15,15]
++  this.labelAngle       = [0,Math.PI/2,0,3.0*Math.PI/2]
++  this.labelEnable      = [true,true,true,true]
++  this.labelColor       = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
+ 
+-  var shader      = createShader(gl, shaders.vertex,     shaders.fragment)
+-  var pickShader  = createShader(gl, shaders.pickVertex, shaders.pickFragment)
++  this.titleCenter      = [0,0]
++  this.titleEnable      = true
++  this.titleAngle       = 0
++  this.titleColor       = [0,0,0,1]
+ 
+-  var positionBuffer  = createBuffer(gl)
+-  var offsetBuffer    = createBuffer(gl)
+-  var colorBuffer     = createBuffer(gl)
+-  var idBuffer        = createBuffer(gl)
++  this.borderColor      = [0,0,0,0]
++  this.backgroundColor  = [0,0,0,0]
+ 
+-  var scatter = new GLScatterFancy(
+-    plot,
+-    shader,
+-    pickShader,
+-    positionBuffer,
+-    offsetBuffer,
+-    colorBuffer,
+-    idBuffer)
++  this.zeroLineEnable   = [true, true]
++  this.zeroLineWidth    = [4, 4]
++  this.zeroLineColor    = [[0, 0, 0, 1],[0, 0, 0, 1]]
+ 
+-  scatter.update(options)
++  this.borderLineEnable = [true,true,true,true]
++  this.borderLineWidth  = [2,2,2,2]
++  this.borderLineColor  = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
+ 
+-  plot.addObject(scatter)
++  //Drawing parameters
++  this.grid             = null
++  this.text             = null
++  this.line             = null
++  this.box              = null
++  this.objects          = []
++  this.overlays         = []
+ 
+-  return scatter
+-}
++  this._tickBounds      = [Infinity, Infinity, -Infinity, -Infinity]
+ 
+-},{"./lib/shaders":86,"gl-buffer":66,"gl-shader":96,"text-cache":147,"typedarray-pool":151,"vectorize-text":153}],88:[function(require,module,exports){
++  this.dirty        = false
++  this.pickDirty    = false
++  this.pickDelay    = 120
++  this.pickRadius   = 10
++  this._pickTimeout = null
++  this._drawPick    = this.drawPick.bind(this)
+ 
++  this._depthCounter = 0
++}
+ 
+-exports.pointVertex       = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute float weight;\n\nuniform mat3 matrix;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}\n"
+-exports.pointFragment     = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}\n"
+-exports.pickVertex        = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n"
+-exports.pickFragment      = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"
++var proto = GLPlot2D.prototype
+ 
+-},{}],89:[function(require,module,exports){
+-arguments[4][21][0].apply(exports,arguments)
+-},{"dup":21}],90:[function(require,module,exports){
+-'use strict'
++proto.setDirty = function() {
++  this.dirty = this.pickDirty = true
++}
+ 
+-module.exports = sortLevels
++proto.setOverlayDirty = function() {
++  this.dirty = true
++}
+ 
+-var INSERT_SORT_CUTOFF = 32
++proto.nextDepthValue = function() {
++  return (this._depthCounter++) / 65536.0
++}
+ 
+-function sortLevels(data_levels, data_points, data_ids, data_weights, n0) {
+-  if (n0 <= 4*INSERT_SORT_CUTOFF) {
+-    insertionSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
+-  }
++function lerp(a, b, t) {
++  var s = 0.5 * (t + 1.0)
++  return Math.floor((1.0-s)*a + s*b)|0
+ }
+ 
+-function insertionSort(left, right, data_levels, data_points, data_ids, data_weights) {
+-  for(var i=left+1; i<=right; ++i) {
+-    var a_level  = data_levels[i]
+-    var a_x      = data_points[2*i]
+-    var a_y      = data_points[2*i+1]
+-    var a_id     = data_ids[i]
+-    var a_weight = data_weights[i]
++proto.draw = (function() {
++var TICK_MARK_BOX = [0,0,0,0]
++return function() {
++  var gl         = this.gl
++  var screenBox  = this.screenBox
++  var viewPixels = this.viewBox
++  var dataBox    = this.dataBox
++  var pixelRatio = this.pixelRatio
++  var grid       = this.grid
++  var line       = this.line
++  var text       = this.text
++  var objects    = this.objects
+ 
+-    var j = i
+-    while(j > left) {
+-      var b_level = data_levels[j-1]
+-      var b_x     = data_points[2*(j-1)]
+-      if(((b_level - a_level) || (a_x - b_x)) >= 0) {
+-        break
+-      }
+-      data_levels[j]      = b_level
+-      data_points[2*j]    = b_x
+-      data_points[2*j+1]  = data_points[2*j-1]
+-      data_ids[j]         = data_ids[j-1]
+-      data_weights[j]     = data_weights[j-1]
+-      j -= 1
++  this._depthCounter = 0
++
++  if(this.pickDirty) {
++    if(this._pickTimeout) {
++      clearTimeout(this._pickTimeout)
+     }
++    this.pickDirty = false
++    this._pickTimeout = setTimeout(this._drawPick, this.pickDelay)
++  }
+ 
+-    data_levels[j]     = a_level
+-    data_points[2*j]   = a_x
+-    data_points[2*j+1] = a_y
+-    data_ids[j]        = a_id
+-    data_weights[j]    = a_weight
++  if(!this.dirty) {
++    return
+   }
+-}
++  this.dirty = false
+ 
+-function swap(i, j, data_levels, data_points, data_ids, data_weights) {
+-  var a_level = data_levels[i]
+-  var a_x     = data_points[2*i]
+-  var a_y     = data_points[2*i+1]
+-  var a_id    = data_ids[i]
+-  var a_weight = data_weights[i]
++  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+ 
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
++  //Turn on scissor
++  gl.enable(gl.SCISSOR_TEST)
+ 
+-  data_levels[j]     = a_level
+-  data_points[2*j]   = a_x
+-  data_points[2*j+1] = a_y
+-  data_ids[j]        = a_id
+-  data_weights[j]    = a_weight
+-}
++  //Turn off depth buffer
++  gl.disable(gl.DEPTH_TEST)
++  gl.depthFunc(gl.LESS)
++  gl.depthMask(false)
+ 
+-function move(i, j, data_levels, data_points, data_ids, data_weights) {
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
+-}
++  //Configure premultiplied alpha blending
++  gl.enable(gl.BLEND)
++  gl.blendEquation(gl.FUNC_ADD, gl.FUNC_ADD);
++  gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+ 
+-function rotate(i, j, k, data_levels, data_points, data_ids, data_weights) {
+-  var a_level = data_levels[i]
+-  var a_x     = data_points[2*i]
+-  var a_y     = data_points[2*i+1]
+-  var a_id    = data_ids[i]
+-  var a_weight = data_weights[i]
++  //Draw border
++  gl.scissor(
++    screenBox[0],
++    screenBox[1],
++    screenBox[2]-screenBox[0],
++    screenBox[3]-screenBox[1])
++  var borderColor = this.borderColor
++  gl.clearColor(
++    borderColor[0]*borderColor[3],
++    borderColor[1]*borderColor[3],
++    borderColor[2]*borderColor[3],
++    borderColor[3])
++  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+ 
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
++  //Draw center pane
++  gl.scissor(
++    viewPixels[0],
++    viewPixels[1],
++    viewPixels[2]-viewPixels[0],
++    viewPixels[3]-viewPixels[1])
++  gl.viewport(
++    viewPixels[0],
++    viewPixels[1],
++    viewPixels[2]-viewPixels[0],
++    viewPixels[3]-viewPixels[1])
++  var backgroundColor = this.backgroundColor
++  gl.clearColor(
++    backgroundColor[0]*backgroundColor[3],
++    backgroundColor[1]*backgroundColor[3],
++    backgroundColor[2]*backgroundColor[3],
++    backgroundColor[3])
++  gl.clear(gl.COLOR_BUFFER_BIT)
+ 
+-  data_levels[j]     = data_levels[k]
+-  data_points[2*j]   = data_points[2*k]
+-  data_points[2*j+1] = data_points[2*k+1]
+-  data_ids[j]        = data_ids[k]
+-  data_weights[j]    = data_weights[k]
++  //Draw grid
++  grid.draw()
+ 
+-  data_levels[k]     = a_level
+-  data_points[2*k]   = a_x
+-  data_points[2*k+1] = a_y
+-  data_ids[k]        = a_id
+-  data_weights[k]    = a_weight
+-}
++  //Draw zero lines separately
++  var zeroLineEnable = this.zeroLineEnable
++  var zeroLineColor  = this.zeroLineColor
++  var zeroLineWidth  = this.zeroLineWidth
++  if(zeroLineEnable[0] || zeroLineEnable[1]) {
++    line.bind()
++    for(var i=0; i<2; ++i) {
++      if(!zeroLineEnable[i] ||
++        !(dataBox[i] <= 0 && dataBox[i+2] >= 0)) {
++        continue
++      }
+ 
+-function shufflePivot(
+-  i, j,
+-  a_level, a_x, a_y, a_id, a_weight,
+-  data_levels, data_points, data_ids, data_weights) {
++      var zeroIntercept = screenBox[i] -
++        dataBox[i] * (screenBox[i+2] - screenBox[i]) / (dataBox[i+2] - dataBox[i])
+ 
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
++      if(i === 0) {
++        line.drawLine(
++          zeroIntercept, screenBox[1], zeroIntercept, screenBox[3],
++          zeroLineWidth[i],
++          zeroLineColor[i])
++      } else {
++        line.drawLine(
++          screenBox[0], zeroIntercept, screenBox[2], zeroIntercept,
++          zeroLineWidth[i],
++          zeroLineColor[i])
++      }
++    }
++  }
+ 
+-  data_levels[j]     = a_level
+-  data_points[2*j]   = a_x
+-  data_points[2*j+1] = a_y
+-  data_ids[j]        = a_id
+-  data_weights[j]    = a_weight
+-}
++  //Draw traces
++  for(var i=0; i<objects.length; ++i) {
++    objects[i].draw()
++  }
+ 
+-function compare(i, j, data_levels, data_points, data_ids) {
+-  return ((data_levels[i] - data_levels[j]) ||
+-          (data_points[2*j] - data_points[2*i]) ||
+-          (data_ids[i] - data_ids[j])) < 0
+-}
++  //Return viewport to default
++  gl.viewport(
++    screenBox[0],
++    screenBox[1],
++    screenBox[2]-screenBox[0],
++    screenBox[3]-screenBox[1])
++  gl.scissor(
++    screenBox[0],
++    screenBox[1],
++    screenBox[2]-screenBox[0],
++    screenBox[3]-screenBox[1])
+ 
+-function comparePivot(i, level, x, y, id, data_levels, data_points, data_ids) {
+-  return ((level - data_levels[i]) ||
+-          (data_points[2*i] - x) ||
+-          (id - data_ids[i])) < 0
+-}
++  //Draw tick marks
++  this.grid.drawTickMarks()
+ 
+-function quickSort(left, right, data_levels, data_points, data_ids, data_weights) {
+-  var sixth = (right - left + 1) / 6 | 0,
+-      index1 = left + sixth,
+-      index5 = right - sixth,
+-      index3 = left + right >> 1,
+-      index2 = index3 - sixth,
+-      index4 = index3 + sixth,
+-      el1 = index1,
+-      el2 = index2,
+-      el3 = index3,
+-      el4 = index4,
+-      el5 = index5,
+-      less = left + 1,
+-      great = right - 1,
+-      tmp = 0
+-  if(compare(el1, el2, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el1
+-    el1 = el2
+-    el2 = tmp
+-  }
+-  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el1, el3, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el1
+-    el1 = el3
+-    el3 = tmp
++  //Draw line elements
++  line.bind()
++
++  //Draw border lines
++  var borderLineEnable = this.borderLineEnable
++  var borderLineWidth  = this.borderLineWidth
++  var borderLineColor  = this.borderLineColor
++  if(borderLineEnable[1]) {
++    line.drawLine(
++      viewPixels[0], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
++      viewPixels[0], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
++      borderLineWidth[1], borderLineColor[1])
+   }
+-  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
++  if(borderLineEnable[0]) {
++    line.drawLine(
++      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[1],
++      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[1],
++      borderLineWidth[0], borderLineColor[0])
+   }
+-  if(compare(el1, el4, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el1
+-    el1 = el4
+-    el4 = tmp
++  if(borderLineEnable[3]) {
++    line.drawLine(
++      viewPixels[2], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
++      viewPixels[2], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
++      borderLineWidth[3], borderLineColor[3])
+   }
+-  if(compare(el3, el4, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el3
+-    el3 = el4
+-    el4 = tmp
++  if(borderLineEnable[2]) {
++    line.drawLine(
++      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[3],
++      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[3],
++      borderLineWidth[2], borderLineColor[2])
+   }
+-  if(compare(el2, el5, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el2
+-    el2 = el5
+-    el5 = tmp
++
++  //Draw text elements
++  text.bind()
++  for(var i=0; i<2; ++i) {
++    text.drawTicks(i)
+   }
+-  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
++  if(this.titleEnable) {
++    text.drawTitle()
+   }
+-  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
++
++  //Draw other overlay elements (select boxes, etc.)
++  var overlays = this.overlays
++  for(var i=0; i<overlays.length; ++i) {
++    overlays[i].draw()
+   }
+ 
+-  var pivot1_level  = data_levels[el2]
+-  var pivot1_x      = data_points[2*el2]
+-  var pivot1_y      = data_points[2*el2+1]
+-  var pivot1_id     = data_ids[el2]
+-  var pivot1_weight = data_weights[el2]
++  //Turn off scissor test
++  gl.disable(gl.SCISSOR_TEST)
++  gl.disable(gl.BLEND)
++  gl.depthMask(true)
++}
++})()
+ 
+-  var pivot2_level  = data_levels[el4]
+-  var pivot2_x      = data_points[2*el4]
+-  var pivot2_y      = data_points[2*el4+1]
+-  var pivot2_id     = data_ids[el4]
+-  var pivot2_weight = data_weights[el4]
++proto.drawPick = (function() {
+ 
+-  var ptr0 = el1
+-  var ptr2 = el3
+-  var ptr4 = el5
+-  var ptr5 = index1
+-  var ptr6 = index3
+-  var ptr7 = index5
++return function() {
++  var pickBuffer = this.pickBuffer
++  var gl = this.gl
+ 
+-  var level_x = data_levels[ptr0]
+-  var level_y = data_levels[ptr2]
+-  var level_z = data_levels[ptr4]
+-  data_levels[ptr5] = level_x
+-  data_levels[ptr6] = level_y
+-  data_levels[ptr7] = level_z
++  this._pickTimeout = null
++  pickBuffer.begin()
+ 
+-  for (var i1 = 0; i1 < 2; ++i1) {
+-    var x = data_points[2*ptr0+i1]
+-    var y = data_points[2*ptr2+i1]
+-    var z = data_points[2*ptr4+i1]
+-    data_points[2*ptr5+i1] = x
+-    data_points[2*ptr6+i1] = y
+-    data_points[2*ptr7+i1] = z
++  var pickOffset = 1
++  var objects = this.objects
++  for(var i=0; i<objects.length; ++i) {
++    pickOffset = objects[i].drawPick(pickOffset)
+   }
+ 
+-  var id_x = data_ids[ptr0]
+-  var id_y = data_ids[ptr2]
+-  var id_z = data_ids[ptr4]
+-  data_ids[ptr5] = id_x
+-  data_ids[ptr6] = id_y
+-  data_ids[ptr7] = id_z
++  pickBuffer.end()
++}
++})()
+ 
+-  var weight_x = data_weights[ptr0]
+-  var weight_y = data_weights[ptr2]
+-  var weight_z = data_weights[ptr4]
+-  data_weights[ptr5] = weight_x
+-  data_weights[ptr6] = weight_y
+-  data_weights[ptr7] = weight_z
++proto.pick = (function() {
++return function(x, y) {
++  var pixelRatio     = this.pixelRatio
++  var pickPixelRatio = this.pickPixelRatio
++  var viewBox        = this.viewBox
+ 
+-  move(index2, left,  data_levels, data_points, data_ids, data_weights)
+-  move(index4, right, data_levels, data_points, data_ids, data_weights)
+-  for (var k = less; k <= great; ++k) {
+-    if (comparePivot(k,
+-        pivot1_level, pivot1_x, pivot1_y, pivot1_id,
+-        data_levels, data_points, data_ids)) {
+-      if (k !== less) {
+-        swap(k, less, data_levels, data_points, data_ids, data_weights)
+-      }
+-      ++less;
+-    } else {
+-      if (!comparePivot(k,
+-          pivot2_level, pivot2_x, pivot2_y, pivot2_id,
+-          data_levels, data_points, data_ids)) {
+-        while (true) {
+-          if (!comparePivot(great,
+-              pivot2_level, pivot2_x, pivot2_y, pivot2_id,
+-              data_levels, data_points, data_ids)) {
+-            if (--great < k) {
+-              break;
+-            }
+-            continue;
+-          } else {
+-            if (comparePivot(great,
+-                pivot1_level, pivot1_x, pivot1_y, pivot1_id,
+-                data_levels, data_points, data_ids)) {
+-              rotate(k, less, great, data_levels, data_points, data_ids, data_weights)
+-              ++less;
+-              --great;
+-            } else {
+-              swap(k, great, data_levels, data_points, data_ids, data_weights)
+-              --great;
+-            }
+-            break;
+-          }
+-        }
+-      }
+-    }
+-  }
+-  shufflePivot(left, less-1, pivot1_level, pivot1_x, pivot1_y, pivot1_id, pivot1_weight, data_levels, data_points, data_ids, data_weights)
+-  shufflePivot(right, great+1, pivot2_level, pivot2_x, pivot2_y, pivot2_id, pivot2_weight, data_levels, data_points, data_ids, data_weights)
+-  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
+-    insertionSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
++  var scrX = Math.round((x - viewBox[0] / pixelRatio) * pickPixelRatio)|0
++  var scrY = Math.round((y - viewBox[1] / pixelRatio) * pickPixelRatio)|0
++
++  var pickResult = this.pickBuffer.query(scrX, scrY, this.pickRadius)
++  if(!pickResult) {
++    return null
+   }
+-  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
+-    insertionSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
++
++  var pickValue = pickResult.id +
++    (pickResult.value[0]<<8)  +
++    (pickResult.value[1]<<16) +
++    (pickResult.value[2]<<24)
++
++  var objects = this.objects
++  for(var i=0; i<objects.length; ++i) {
++    var result = objects[i].pick(scrX, scrY, pickValue)
++    if(result) {
++      return result
++    }
+   }
+-  if (great - less <= INSERT_SORT_CUTOFF) {
+-    insertionSort(less, great, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(less, great, data_levels, data_points, data_ids, data_weights)
++
++  return null
++}
++})()
++
++function deepClone(array) {
++  var result = array.slice()
++  for(var i=0; i<result.length; ++i) {
++    result[i] = result[i].slice()
+   }
++  return result
+ }
+ 
+-},{}],91:[function(require,module,exports){
+-'use strict'
++function compareTicks(a, b) {
++  return a.x - b.x
++}
+ 
+-var pool = require('typedarray-pool')
++proto.setScreenBox = function(nbox) {
++  var screenBox = this.screenBox
++  var pixelRatio = this.pixelRatio
+ 
+-var sortLevels = require('./lib/sort')
++  screenBox[0] = Math.round(nbox[0] * pixelRatio) | 0
++  screenBox[1] = Math.round(nbox[1] * pixelRatio) | 0
++  screenBox[2] = Math.round(nbox[2] * pixelRatio) | 0
++  screenBox[3] = Math.round(nbox[3] * pixelRatio) | 0
+ 
+-module.exports = snapPoints
++  this.setDirty()
++}
+ 
+-function partition(points, ids, start, end, lox, loy, hix, hiy) {
+-  var mid = start
+-  for(var i=start; i<end; ++i) {
+-    var x  = points[2*i]
+-    var y  = points[2*i+1]
+-    var s  = ids[i]
+-    if(lox <= x && x <= hix &&
+-       loy <= y && y <= hiy) {
+-      if(i === mid) {
+-        mid += 1
+-      } else {
+-        points[2*i]     = points[2*mid]
+-        points[2*i+1]   = points[2*mid+1]
+-        ids[i]          = ids[mid]
+-        points[2*mid]   = x
+-        points[2*mid+1] = y
+-        ids[mid]        = s
+-        mid += 1
+-      }
+-    }
++proto.setDataBox = function(nbox) {
++  var dataBox = this.dataBox
++
++  var different =
++    dataBox[0] !== nbox[0] ||
++    dataBox[1] !== nbox[1] ||
++    dataBox[2] !== nbox[2] ||
++    dataBox[3] !== nbox[3]
++
++  if(different) {
++    dataBox[0] = nbox[0]
++    dataBox[1] = nbox[1]
++    dataBox[2] = nbox[2]
++    dataBox[3] = nbox[3]
++
++    this.setDirty()
+   }
+-  return mid
+ }
+ 
+-function SnapInterval(pixelSize, offset, count) {
+-  this.pixelSize  = pixelSize
+-  this.offset     = offset
+-  this.count      = count
++proto.setViewBox = function(nbox) {
++  var pixelRatio = this.pixelRatio
++  var viewBox = this.viewBox
++
++  viewBox[0] = Math.round(nbox[0] * pixelRatio)|0
++  viewBox[1] = Math.round(nbox[1] * pixelRatio)|0
++  viewBox[2] = Math.round(nbox[2] * pixelRatio)|0
++  viewBox[3] = Math.round(nbox[3] * pixelRatio)|0
++
++  var pickPixelRatio = this.pickPixelRatio
++  this.pickBuffer.shape = [
++    Math.round((nbox[2] - nbox[0]) * pickPixelRatio)|0,
++    Math.round((nbox[3] - nbox[1]) * pickPixelRatio)|0 ]
++
++  this.setDirty()
+ }
+ 
+-function snapPoints(points, ids, weights, bounds) {
+-  var n    = points.length >>> 1
+-  if(n < 1) {
+-    return []
+-  }
++proto.update = function(options) {
++  options = options || {}
+ 
+-  var lox =  Infinity, loy =  Infinity
+-  var hix = -Infinity, hiy = -Infinity
+-  for(var i=0; i<n; ++i) {
+-    var x = points[2*i]
+-    var y = points[2*i+1]
+-    lox = Math.min(lox, x)
+-    hix = Math.max(hix, x)
+-    loy = Math.min(loy, y)
+-    hiy = Math.max(hiy, y)
+-    ids[i] = i
+-  }
++  var gl = this.gl
+ 
+-  if(lox === hix) {
+-    hix += 1 + Math.abs(hix)
+-  }
+-  if(loy === hiy) {
+-    hiy += 1 + Math.abs(hix)
+-  }
++  this.pixelRatio      = options.pixelRatio || 1
+ 
+-  //Calculate diameter
+-  var scaleX = 1.0 / (hix - lox)
+-  var scaleY = 1.0 / (hiy - loy)
+-  var diam = Math.max(hix - lox, hiy - loy)
++  var pixelRatio       = this.pixelRatio
++  this.pickPixelRatio  = Math.max(pixelRatio, 1)
+ 
+-  bounds = bounds || [0,0,0,0]
++  this.setScreenBox(options.screenBox ||
++    [0, 0, gl.drawingBufferWidth/pixelRatio, gl.drawingBufferHeight/pixelRatio])
+ 
+-  bounds[0] = lox
+-  bounds[1] = loy
+-  bounds[2] = hix
+-  bounds[3] = hiy
++  var screenBox = this.screenBox
++  this.setViewBox(options.viewBox ||
++    [0.125*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
++     0.125*(this.screenBox[3]-this.screenBox[1])/pixelRatio,
++     0.875*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
++     0.875*(this.screenBox[3]-this.screenBox[1])/pixelRatio])
+ 
+-  var levels = pool.mallocInt32(n)
+-  var ptr = 0
++  var viewBox = this.viewBox
++  var aspectRatio = (viewBox[2] - viewBox[0]) / (viewBox[3] - viewBox[1])
++  this.setDataBox(options.dataBox || [-10, -10/aspectRatio, 10, 10/aspectRatio])
+ 
+-  function snapRec(x, y, diam, start, end, level) {
+-    var diam_2 = diam * 0.5
+-    var offset = start + 1
+-    var count = end - start
+-    weights[ptr] = count
+-    levels[ptr++] = level
+-    for(var i=0; i<2; ++i) {
+-      for(var j=0; j<2; ++j) {
+-        var nx = x+i*diam_2
+-        var ny = y+j*diam_2
+-        var nextOffset = partition(
+-            points
+-          , ids
+-          , offset
+-          , end
+-          , nx, ny
+-          , nx+diam_2, ny+diam_2)
+-        if(nextOffset === offset) {
+-          continue
+-        }
+-        if(nextOffset - offset >= Math.max(0.9 * count, 32)) {
+-          var mid = (end + start)>>>1
+-          snapRec(nx, ny, diam_2, offset, mid, level+1)
+-          offset = mid
+-        }
+-        snapRec(nx, ny, diam_2, offset, nextOffset, level+1)
+-        offset = nextOffset
+-      }
+-    }
+-  }
+-  snapRec(lox, loy, diam, 0, n, 0)
+-  sortLevels(levels, points, ids, weights, n)
++  this.borderColor     = (options.borderColor     || [0,0,0,0]).slice()
++  this.backgroundColor = (options.backgroundColor || [0,0,0,0]).slice()
+ 
+-  var lod         = []
+-  var lastLevel   = 0
+-  var prevOffset  = n
+-  for(var ptr=n-1; ptr>=0; --ptr) {
+-    points[2*ptr]   = (points[2*ptr]   - lox) * scaleX
+-    points[2*ptr+1] = (points[2*ptr+1] - loy) * scaleY
++  this.gridLineEnable  = (options.gridLineEnable || [true,true]).slice()
++  this.gridLineWidth   = (options.gridLineWidth || [1,1]).slice()
++  this.gridLineColor   = deepClone(options.gridLineColor ||
++    [[0.5,0.5,0.5,1],[0.5,0.5,0.5,1]])
+ 
+-    var level = levels[ptr]
+-    if(level === lastLevel) {
+-      continue
+-    }
++  this.zeroLineEnable   = (options.zeroLineEnable || [true, true]).slice()
++  this.zeroLineWidth    = (options.zeroLineWidth || [4, 4]).slice()
++  this.zeroLineColor    = deepClone(options.zeroLineColor ||
++    [[0, 0, 0, 1],[0, 0, 0, 1]])
+ 
+-    lod.push(new SnapInterval(
+-      diam * Math.pow(0.5, level),
+-      ptr+1,
+-      prevOffset - (ptr+1)
+-    ))
+-    prevOffset = ptr+1
++  this.tickMarkLength   = (options.tickMarkLength || [0,0,0,0]).slice()
++  this.tickMarkWidth    = (options.tickMarkWidth || [0,0,0,0]).slice()
++  this.tickMarkColor    = deepClone(options.tickMarkColor ||
++    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
+ 
+-    lastLevel = level
+-  }
++  this.titleCenter      = (options.titleCenter || [
++    0.5*(viewBox[0]+viewBox[2])/pixelRatio,(viewBox[3]+120)/pixelRatio]).slice()
++  this.titleEnable      = !('titleEnable' in options) || !!options.titleEnable
++  this.titleAngle       = options.titleAngle || 0
++  this.titleColor       = (options.titleColor || [0,0,0,1]).slice()
+ 
+-  lod.push(new SnapInterval(diam * Math.pow(0.5, level+1), 0, prevOffset))
+-  pool.free(levels)
++  this.labelPad         = (options.labelPad || [15,15,15,15]).slice()
++  this.labelAngle       = (options.labelAngle ||
++    [0,Math.PI/2,0,3.0*Math.PI/2]).slice()
++  this.labelEnable      = (options.labelEnable || [true,true,true,true]).slice()
++  this.labelColor       = deepClone(options.labelColor ||
++    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
+ 
+-  return lod
+-}
++  this.tickPad         = (options.tickPad || [15,15,15,15]).slice()
++  this.tickAngle       = (options.tickAngle || [0,0,0,0]).slice()
++  this.tickEnable      = (options.tickEnable || [true,true,true,true]).slice()
++  this.tickColor       = deepClone(options.tickColor ||
++    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
+ 
+-},{"./lib/sort":90,"typedarray-pool":151}],92:[function(require,module,exports){
+-'use strict'
++  this.borderLineEnable = (options.borderLineEnable ||
++                            [true,true,true,true]).slice()
++  this.borderLineWidth  = (options.borderLineWidth || [2,2,2,2]).slice()
++  this.borderLineColor  = deepClone(options.borderLineColor ||
++                          [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]])
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var bsearch = require('binary-search-bounds')
+-var snapPoints = require('snap-points-2d')
++  var ticks = options.ticks || [ [], [] ]
+ 
+-var pool = require('typedarray-pool')
++  //Compute bounds on ticks
++  var bounds = this._tickBounds
++  bounds[0] = bounds[1] =  Infinity
++  bounds[2] = bounds[3] = -Infinity
++  for(var i=0; i<2; ++i) {
++    var axisTicks = ticks[i].slice(0)
++    if(axisTicks.length === 0) {
++      continue
++    }
++    axisTicks.sort(compareTicks)
++    bounds[i]   = Math.min(bounds[i], axisTicks[0].x)
++    bounds[i+2] = Math.max(bounds[i+2], axisTicks[axisTicks.length-1].x)
++  }
+ 
+-var SHADERS = require('./lib/shader')
++  //Update grid
++  this.grid.update({
++    bounds: bounds,
++    ticks:  ticks
++  })
+ 
+-module.exports = createScatter2D
++  //Update text
++  this.text.update({
++    bounds:     bounds,
++    ticks:      ticks,
++    labels:     options.labels    || ['x', 'y'],
++    labelSize:  options.labelSize || [12,12],
++    labelFont:  options.labelFont || ['sans-serif', 'sans-serif'],
++    title:      options.title     || '',
++    titleSize:  options.titleSize || 18,
++    titleFont:  options.titleFont || 'sans-serif'
++  })
+ 
+-function Scatter2D(plot, offsetBuffer, pickBuffer, weightBuffer, shader, pickShader) {
+-  this.plot           = plot
+-  this.offsetBuffer   = offsetBuffer
+-  this.pickBuffer     = pickBuffer
+-  this.weightBuffer   = weightBuffer
+-  this.shader         = shader
+-  this.pickShader     = pickShader
+-  this.scales         = []
+-  this.size           = 12.0
+-  this.borderSize     = 1.0
+-  this.pointCount     = 0
+-  this.color          = [1,0,0,1]
+-  this.borderColor    = [0,0,0,1]
+-  this.bounds         = [Infinity,Infinity,-Infinity,-Infinity]
+-  this.pickOffset     = 0
+-  this.points         = null
+-  this.xCoords        = null
++  this.setDirty()
+ }
+ 
+-var proto = Scatter2D.prototype
+-
+ proto.dispose = function() {
+-  this.shader.dispose()
+-  this.pickShader.dispose()
+-  this.offsetBuffer.dispose()
+-  this.pickBuffer.dispose()
+-  if(this.xCoords) {
+-    pool.free(this.xCoords)
++  this.box.dispose()
++  this.grid.dispose()
++  this.text.dispose()
++  this.line.dispose()
++  for(var i=this.objects.length-1; i>=0; --i) {
++    this.objects[i].dispose()
+   }
+-  this.plot.removeObject(this)
++  this.objects.length = 0
++  for(var i=this.overlays.length-1; i>=0; --i) {
++    this.overlays[i].dispose()
++  }
++  this.overlays.length = 0
++
++  this.gl = null
+ }
+ 
+-proto.update = function(options) {
+-  options = options || {}
++proto.addObject = function(object) {
++  if(this.objects.indexOf(object) < 0) {
++    this.objects.push(object)
++    this.setDirty()
++  }
++}
+ 
+-  function dflt(opt, value) {
+-    if(opt in options) {
+-      return options[opt]
++proto.removeObject = function(object) {
++  var objects = this.objects
++  for(var i=0; i<objects.length; ++i) {
++    if(objects[i] === object) {
++      objects.splice(i,1)
++      this.setDirty()
++      break
+     }
+-    return value
+   }
++}
+ 
+-  this.size         = dflt('size', 12.0)
+-  this.color        = dflt('color', [1,0,0,1]).slice()
+-  this.borderSize   = dflt('borderSize', 1)
+-  this.borderColor  = dflt('borderColor', [0,0,0,1]).slice()
+-
+-  //Update point data
+-  if(this.xCoords) {
+-    pool.free(this.xCoords)
++proto.addOverlay = function(object) {
++  if(this.overlays.indexOf(object) < 0) {
++    this.overlays.push(object)
++    this.setOverlayDirty()
+   }
+-  var data          = options.positions
+-  var packed        = pool.mallocFloat32(data.length)
+-  var packedId      = pool.mallocInt32(data.length>>>1)
+-  packed.set(data)
+-  var packedW       = pool.mallocFloat32(data.length)
+-  this.points       = data
+-  this.scales       = snapPoints(packed, packedId, packedW, this.bounds)
+-  this.offsetBuffer.update(packed)
+-  this.pickBuffer.update(packedId)
+-  this.weightBuffer.update(packedW)
+-  var xCoords      = pool.mallocFloat32(data.length>>>1)
+-  for(var i=0,j=0; i<data.length; i+=2,++j) {
+-    xCoords[j] = packed[i]
++}
++
++proto.removeOverlay = function(object) {
++  var objects = this.overlays
++  for(var i=0; i<objects.length; ++i) {
++    if(objects[i] === object) {
++      objects.splice(i,1)
++      this.setOverlayDirty()
++      break
++    }
+   }
+-  pool.free(packedId)
+-  pool.free(packed)
+-  pool.free(packedW)
++}
+ 
+-  this.xCoords = xCoords
++function createGLPlot2D(options) {
++  var gl = options.gl
++  var pickBuffer = createPick(gl, [
++    gl.drawingBufferWidth, gl.drawingBufferHeight])
++  var plot = new GLPlot2D(gl, pickBuffer)
++  plot.grid = createGrid(plot)
++  plot.text = createText(plot)
++  plot.line = createLine(plot)
++  plot.box  = createBox(plot)
++  plot.update(options)
++  return plot
++}
+ 
+-  this.pointCount = data.length >>> 1
+-  this.pickOffset = 0
++},{"./lib/box":79,"./lib/grid":80,"./lib/line":81,"./lib/text":83,"gl-select-static":95}],86:[function(require,module,exports){
++'use strict'
++
++
++
++module.exports = {
++  vertex:       "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  fragColor = color;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
++  fragment:     "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
++  pickVertex:   "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 id;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\nuniform vec4 pickOffset;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
++  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"
+ }
+ 
+-proto.drawPick = (function() {
+-  var MATRIX = [1,0,0,
+-                0,1,0,
+-                0,0,1]
+-  var PICK_VEC4 = [0,0,0,0]
+-return function(pickOffset) {
+-  var plot          = this.plot
+-  var shader        = this.pickShader
+-  var scales        = this.scales
+-  var offsetBuffer  = this.offsetBuffer
+-  var pickBuffer    = this.pickBuffer
+-  var bounds        = this.bounds
+-  var size          = this.size
+-  var borderSize    = this.borderSize
+-  var gl            = plot.gl
+-  var pixelRatio    = plot.pickPixelRatio
+-  var viewBox       = plot.viewBox
+-  var dataBox       = plot.dataBox
++},{}],87:[function(require,module,exports){
++'use strict'
+ 
+-  if(this.pointCount === 0) {
+-    return pickOffset
++module.exports = createFancyScatter2D
++
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var textCache = require('text-cache')
++var pool = require('typedarray-pool')
++var vectorizeText = require('vectorize-text')
++var shaders = require('./lib/shaders')
++
++var BOUNDARIES = {}
++
++function getBoundary(glyph) {
++  if(glyph in BOUNDARIES) {
++    return BOUNDARIES[glyph]
+   }
+ 
+-  var boundX  = bounds[2] - bounds[0]
+-  var boundY  = bounds[3] - bounds[1]
+-  var dataX   = dataBox[2] - dataBox[0]
+-  var dataY   = dataBox[3] - dataBox[1]
+-  var screenX = (viewBox[2] - viewBox[0]) * pixelRatio / plot.pixelRatio
+-  var screenY = (viewBox[3] - viewBox[1]) * pixelRatio / plot.pixelRatio
++  var polys = vectorizeText(glyph, {
++    polygons: true,
++    font: 'sans-serif',
++    textAlign: 'left',
++    textBaseline: 'alphabetic'
++  })
+ 
+-  var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
+-  var targetScale = pixelSize
++  var coords  = []
++  var normals = []
+ 
++  polys.forEach(function(loops) {
++    loops.forEach(function(loop) {
++      for(var i=0; i<loop.length; ++i) {
++        var a = loop[(i + loop.length - 1) % loop.length]
++        var b = loop[i]
++        var c = loop[(i + 1) % loop.length]
++        var d = loop[(i + 2) % loop.length]
+ 
+-  MATRIX[0] = 2.0 * boundX / dataX
+-  MATRIX[4] = 2.0 * boundY / dataY
+-  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++        var dx = b[0] - a[0]
++        var dy = b[1] - a[1]
++        var dl = Math.sqrt(dx*dx + dy*dy)
++        dx /= dl
++        dy /= dl
+ 
+-  this.pickOffset = pickOffset
+-  PICK_VEC4[0] = ( pickOffset      & 0xff)
+-  PICK_VEC4[1] = ((pickOffset>>8)  & 0xff)
+-  PICK_VEC4[2] = ((pickOffset>>16) & 0xff)
+-  PICK_VEC4[3] = ((pickOffset>>24) & 0xff)
++        coords.push(a[0], a[1] + 1.4)
++        normals.push(dy, -dx)
++        coords.push(a[0], a[1] + 1.4)
++        normals.push(-dy, dx)
++        coords.push(b[0], b[1] + 1.4)
++        normals.push(-dy, dx)
+ 
+-  shader.bind()
+-  shader.uniforms.matrix      = MATRIX
+-  shader.uniforms.color       = this.color
+-  shader.uniforms.borderColor = this.borderColor
+-  shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
+-  shader.uniforms.pickOffset  = PICK_VEC4
++        coords.push(b[0], b[1] + 1.4)
++        normals.push(-dy, dx)
++        coords.push(a[0], a[1] + 1.4)
++        normals.push(dy, -dx)
++        coords.push(b[0], b[1] + 1.4)
++        normals.push(dy, -dx)
+ 
+-  if(this.borderSize === 0) {
+-    shader.uniforms.centerFraction = 2.0;
+-  } else {
+-    shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
+-  }
++        var ex = d[0] - c[0]
++        var ey = d[1] - c[1]
++        var el = Math.sqrt(ex*ex + ey*ey)
++        ex /= el
++        ey /= el
+ 
+-  offsetBuffer.bind()
+-  shader.attributes.position.pointer()
+-  pickBuffer.bind()
+-  shader.attributes.pickId.pointer(gl.UNSIGNED_BYTE)
++        coords.push(b[0], b[1]+1.4)
++        normals.push(dy, -dx)
++        coords.push(b[0], b[1]+1.4)
++        normals.push(-dy, dx)
++        coords.push(c[0], c[1]+1.4)
++        normals.push(-ey, ex)
+ 
+-  var xCoords = this.xCoords
+-  var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
+-  var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
++        coords.push(c[0], c[1]+1.4)
++        normals.push(-ey, ex)
++        coords.push(b[0], b[1]+1.4)
++        normals.push(ey, -ex)
++        coords.push(c[0], c[1]+1.4)
++        normals.push(ey, -ex)
++      }
++    })
++  })
+ 
+-  for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
+-    var lod     = scales[scaleNum]
+-    if(lod.pixelSize < pixelSize && scaleNum > 1) {
+-      continue
++  var bounds = [Infinity, Infinity, -Infinity, -Infinity]
++  for(var i=0; i<coords.length; i+=2) {
++    for(var j=0; j<2; ++j) {
++      bounds[j]   = Math.min(bounds[j],   coords[i+j])
++      bounds[2+j] = Math.max(bounds[2+j], coords[i+j])
+     }
++  }
+ 
+-    var intervalStart = lod.offset
+-    var intervalEnd   = lod.count + intervalStart
++  return BOUNDARIES[glyph] = {
++    coords:  coords,
++    normals: normals,
++    bounds:  bounds
++  }
++}
+ 
+-    var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
+-    var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
+ 
+-    if(endOffset > startOffset) {
+-      gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
+-    }
+-  }
++var VERTEX_SIZE       = 9
++var VERTEX_SIZE_BYTES = VERTEX_SIZE * 4
+ 
+-  return pickOffset + this.pointCount
++function GLScatterFancy(
++    plot,
++    shader,
++    pickShader,
++    positionBuffer,
++    offsetBuffer,
++    colorBuffer,
++    idBuffer) {
++  this.plot           = plot
++  this.shader         = shader
++  this.pickShader     = pickShader
++  this.positionBuffer = positionBuffer
++  this.offsetBuffer   = offsetBuffer
++  this.colorBuffer    = colorBuffer
++  this.idBuffer       = idBuffer
++  this.bounds         = [Infinity, Infinity, -Infinity, -Infinity]
++  this.numPoints      = 0
++  this.numVertices    = 0
++  this.pickOffset     = 0
++  this.points         = null
+ }
+-})()
+ 
+-proto.draw = (function() {
+-  var MATRIX = [1, 0, 0,
+-                0, 1, 0,
+-                0, 0, 1]
++var proto = GLScatterFancy.prototype
+ 
+-  return function() {
++;(function() {
++  var MATRIX = [
++    1, 0, 0,
++    0, 1, 0,
++    0, 0, 1
++  ];
++
++  var PIXEL_SCALE = [1, 1]
++
++  function calcScales() {
+     var plot          = this.plot
+-    var shader        = this.shader
+-    var scales        = this.scales
+-    var offsetBuffer  = this.offsetBuffer
+     var bounds        = this.bounds
+-    var size          = this.size
+-    var borderSize    = this.borderSize
+-    var gl            = plot.gl
+-    var pixelRatio    = plot.pixelRatio
+-    var viewBox       = plot.viewBox
+-    var dataBox       = plot.dataBox
+ 
+-    if(this.pointCount === 0) {
+-      return
+-    }
++    var viewBox     = plot.viewBox
++    var dataBox     = plot.dataBox
++    var pixelRatio  = plot.pixelRatio
+ 
+     var boundX  = bounds[2] - bounds[0]
+     var boundY  = bounds[3] - bounds[1]
+     var dataX   = dataBox[2] - dataBox[0]
+     var dataY   = dataBox[3] - dataBox[1]
+-    var screenX = viewBox[2] - viewBox[0]
+-    var screenY = viewBox[3] - viewBox[1]
+-
+-    var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
+-    var targetScale = pixelSize
+ 
+     MATRIX[0] = 2.0 * boundX / dataX
+     MATRIX[4] = 2.0 * boundY / dataY
+     MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+     MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-    shader.bind()
+-    shader.uniforms.matrix      = MATRIX
+-    shader.uniforms.color       = this.color
+-    shader.uniforms.borderColor = this.borderColor
+-    shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
+-    shader.uniforms.useWeight   = 1
++    var screenX = (viewBox[2] - viewBox[0])
++    var screenY = (viewBox[3] - viewBox[1])
+ 
+-    if(this.borderSize === 0) {
+-      shader.uniforms.centerFraction = 2.0;
+-    } else {
+-      shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
+-    }
++    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
++    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
++  }
+ 
+-    offsetBuffer.bind()
+-    shader.attributes.position.pointer()
++  proto.draw = function() {
++    var plot          = this.plot
++    var shader        = this.shader
++    var numVertices   = this.numVertices
+ 
+-    this.weightBuffer.bind()
+-    shader.attributes.weight.pointer()
++    if(!numVertices) {
++      return
++    }
+ 
+-    var xCoords = this.xCoords
+-    var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
+-    var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
++    var gl          = plot.gl
+ 
+-    var firstLevel = true
++    calcScales.call(this)
+ 
+-    for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
+-      var lod     = scales[scaleNum]
+-      if(lod.pixelSize < pixelSize && scaleNum > 1) {
+-        continue
+-      }
++    shader.bind()
+ 
+-      var intervalStart = lod.offset
+-      var intervalEnd   = lod.count + intervalStart
++    shader.uniforms.pixelScale = PIXEL_SCALE
++    shader.uniforms.viewTransform = MATRIX
+ 
+-      var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
+-      var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
++    this.positionBuffer.bind()
++    shader.attributes.position.pointer()
+ 
+-      if(endOffset > startOffset) {
+-        gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
+-      }
++    this.offsetBuffer.bind()
++    shader.attributes.offset.pointer()
+ 
+-      if(firstLevel) {
+-        firstLevel = false
+-        shader.uniforms.useWeight = 0
+-      }
+-    }
+-  }
+-})()
++    this.colorBuffer.bind()
++    shader.attributes.color.pointer(gl.UNSIGNED_BYTE, true)
+ 
+-proto.pick = function(x, y, value) {
+-  var pickOffset = this.pickOffset
+-  var pointCount = this.pointCount
+-  if(value < pickOffset || value >= pickOffset + pointCount) {
+-    return null
+-  }
+-  var pointId = value - pickOffset
+-  var points = this.points
+-  return {
+-    object:  this,
+-    pointId: pointId,
+-    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
++    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
+   }
+-}
+-
+-function createScatter2D(plot, options) {
+-  var gl     = plot.gl
+-  var buffer = createBuffer(gl)
+-  var pickBuffer = createBuffer(gl)
+-  var weightBuffer = createBuffer(gl)
+-  var shader = createShader(gl, SHADERS.pointVertex, SHADERS.pointFragment)
+-  var pickShader = createShader(gl, SHADERS.pickVertex, SHADERS.pickFragment)
+-
+-  var result = new Scatter2D(
+-    plot, buffer, pickBuffer, weightBuffer, shader, pickShader)
+-  result.update(options)
+ 
+-  //Register with plot
+-  plot.addObject(result)
+-
+-  return result
+-}
+-
+-},{"./lib/shader":88,"binary-search-bounds":89,"gl-buffer":66,"gl-shader":96,"snap-points-2d":91,"typedarray-pool":151}],93:[function(require,module,exports){
+-'use strict'
++  var PICK_OFFSET = [0,0,0,0]
+ 
++  proto.drawPick = function(offset) {
++    var plot          = this.plot
++    var shader        = this.pickShader
++    var numVertices   = this.numVertices
+ 
++    var gl          = plot.gl
+ 
+-exports.boxVertex = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n"
+-exports.boxFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"
++    this.pickOffset = offset
+ 
+-},{}],94:[function(require,module,exports){
+-'use strict'
++    if(!numVertices) {
++      return offset
++    }
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
++    for(var i=0; i<4; ++i) {
++      PICK_OFFSET[i] = ((offset>>(i*8)) & 0xff)
++    }
+ 
+-var SHADERS = require('./lib/shaders')
++    calcScales.call(this)
+ 
+-module.exports = createSelectBox
++    shader.bind()
+ 
+-function SelectBox(plot, boxBuffer, boxShader) {
+-  this.plot = plot
+-  this.boxBuffer = boxBuffer
+-  this.boxShader = boxShader
++    shader.uniforms.pixelScale    = PIXEL_SCALE
++    shader.uniforms.viewTransform = MATRIX
++    shader.uniforms.pickOffset    = PICK_OFFSET
+ 
+-  this.enabled = true
++    this.positionBuffer.bind()
++    shader.attributes.position.pointer()
+ 
+-  this.selectBox = [Infinity,Infinity,-Infinity,-Infinity]
++    this.offsetBuffer.bind()
++    shader.attributes.offset.pointer()
+ 
+-  this.borderColor = [0,0,0,1]
+-  this.innerFill   = false
+-  this.innerColor  = [0,0,0,0.25]
+-  this.outerFill   = true
+-  this.outerColor  = [0,0,0,0.5]
+-  this.borderWidth = 10
+-}
++    this.idBuffer.bind()
++    shader.attributes.id.pointer(gl.UNSIGNED_BYTE, false)
+ 
+-var proto = SelectBox.prototype
++    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
+ 
+-proto.draw = function() {
+-  if(!this.enabled) {
+-    return
++    return offset + this.numPoints
+   }
++})()
+ 
+-  var plot         = this.plot
+-  var selectBox    = this.selectBox
+-  var lineWidth    = this.borderWidth
+-
+-  var innerFill    = this.innerFill
+-  var innerColor   = this.innerColor
+-  var outerFill    = this.outerFill
+-  var outerColor   = this.outerColor
+-  var borderColor  = this.borderColor
++proto.pick = function(x, y, value) {
++  var pickOffset = this.pickOffset
++  var pointCount = this.numPoints
++  if(value < pickOffset || value >= pickOffset + pointCount) {
++    return null
++  }
++  var pointId = value - pickOffset
++  var points   = this.points
++  return {
++    object:     this,
++    pointId:    pointId,
++    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
++  }
++}
+ 
+-  var boxes        = plot.box
+-  var screenBox    = plot.screenBox
+-  var dataBox      = plot.dataBox
+-  var viewBox      = plot.viewBox
+-  var pixelRatio   = plot.pixelRatio
++proto.update = function(options) {
++  options = options || {}
+ 
+-  //Map select box into pixel coordinates
+-  var loX = (selectBox[0]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
+-  var loY = (selectBox[1]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
+-  var hiX = (selectBox[2]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
+-  var hiY = (selectBox[3]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
++  var positions     = options.positions    || []
++  var colors        = options.colors       || []
++  var glyphs        = options.glyphs       || []
++  var sizes         = options.sizes        || []
++  var borderWidths  = options.borderWidths || []
++  var borderColors  = options.borderColors || []
+ 
+-  loX = Math.max(loX, viewBox[0])
+-  loY = Math.max(loY, viewBox[1])
+-  hiX = Math.min(hiX, viewBox[2])
+-  hiY = Math.min(hiY, viewBox[3])
++  this.points = positions
+ 
+-  if(hiX < loX || hiY < loY) {
+-    return
++  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
++  var numVertices = 0
++  for(var i=0; i<glyphs.length; ++i) {
++    numVertices += (
++      textCache('sans-serif', glyphs[i]).data.length +
++      getBoundary(glyphs[i]).coords.length
++    )>> 1
++    for(var j=0; j<2; ++j) {
++      bounds[j]   = Math.min(bounds[j],   positions[2*i+j])
++      bounds[2+j] = Math.max(bounds[2+j], positions[2*i+j])
++    }
+   }
+ 
+-  boxes.bind()
+-
+-  //Draw box
+-  var screenWidth  = screenBox[2] - screenBox[0]
+-  var screenHeight = screenBox[3] - screenBox[1]
+-
+-  if(this.outerFill) {
+-    boxes.drawBox(0, 0, screenWidth, loY, outerColor)
+-    boxes.drawBox(0, loY, loX, hiY, outerColor)
+-    boxes.drawBox(0, hiY, screenWidth, screenHeight, outerColor)
+-    boxes.drawBox(hiX, loY, screenWidth, hiY, outerColor)
++  if(bounds[0] === bounds[2]) {
++    bounds[2] += 1
+   }
+-
+-  if(this.innerFill) {
+-    boxes.drawBox(loX, loY, hiX, hiY, innerColor)
++  if(bounds[3] === bounds[1]) {
++    bounds[3] += 1
+   }
+ 
+-  //Draw border
+-  if(lineWidth > 0) {
++  var sx = 1/(bounds[2] - bounds[0])
++  var sy = 1/(bounds[3] - bounds[1])
++  var tx = bounds[0]
++  var ty = bounds[1]
+ 
+-    //Draw border
+-    var w = lineWidth * pixelRatio
+-    boxes.drawBox(loX-w, loY-w, hiX+w, loY+w, borderColor)
+-    boxes.drawBox(loX-w, hiY-w, hiX+w, hiY+w, borderColor)
+-    boxes.drawBox(loX-w, loY-w, loX+w, hiY+w, borderColor)
+-    boxes.drawBox(hiX-w, loY-w, hiX+w, hiY+w, borderColor)
+-  }
+-}
++  var v_position = pool.mallocFloat32(2 * numVertices)
++  var v_offset   = pool.mallocFloat32(2 * numVertices)
++  var v_color    = pool.mallocUint8(4 * numVertices)
++  var v_ids      = pool.mallocUint32(numVertices)
++  var ptr = 0
+ 
+-proto.update = function(options) {
+-  options = options || {}
++  for(var i=0; i<glyphs.length; ++i) {
++    var glyph = textCache('sans-serif', glyphs[i])
++    var border = getBoundary(glyphs[i])
++    var x = sx * (positions[2*i]   - tx)
++    var y = sy * (positions[2*i+1] - ty)
++    var s = sizes[i]
++    var r = colors[4*i]   * 255.0
++    var g = colors[4*i+1] * 255.0
++    var b = colors[4*i+2] * 255.0
++    var a = colors[4*i+3] * 255.0
+ 
+-  this.innerFill    = !!options.innerFill
+-  this.outerFill    = !!options.outerFill
+-  this.innerColor   = (options.innerColor   || [0,0,0,0.5]).slice()
+-  this.outerColor   = (options.outerColor   || [0,0,0,0.5]).slice()
+-  this.borderColor  = (options.borderColor || [0,0,0,1]).slice()
+-  this.borderWidth  = options.borderWidth || 0
+-  this.selectBox    = (options.selectBox || this.selectBox).slice()
+-}
++    var gx = 0.5*(border.bounds[0] + border.bounds[2])
++    var gy = 0.5*(border.bounds[1] + border.bounds[3])
+ 
+-proto.dispose = function() {
+-  this.boxBuffer.dispose()
+-  this.boxShader.dispose()
+-  this.plot.removeOverlay(this)
+-}
++    for(var j=0; j<glyph.data.length; j+=2) {
++      v_position[2*ptr]   = x
++      v_position[2*ptr+1] = y
++      v_offset[2*ptr]     = -s * (glyph.data[j]   - gx)
++      v_offset[2*ptr+1]   = -s * (glyph.data[j+1] - gy)
++      v_color[4*ptr]      = r
++      v_color[4*ptr+1]    = g
++      v_color[4*ptr+2]    = b
++      v_color[4*ptr+3]    = a
++      v_ids[ptr]          = i
+ 
+-function createSelectBox(plot, options) {
+-  var gl = plot.gl
+-  var buffer = createBuffer(gl, [
+-    0, 0,
+-    0, 1,
+-    1, 0,
+-    1, 1 ])
+-  var shader = createShader(gl, SHADERS.boxVertex, SHADERS.boxFragment)
+-  var selectBox = new SelectBox(plot, buffer, shader)
+-  selectBox.update(options)
+-  plot.addOverlay(selectBox)
+-  return selectBox
+-}
++      ptr += 1
++    }
+ 
+-},{"./lib/shaders":93,"gl-buffer":66,"gl-shader":96}],95:[function(require,module,exports){
+-'use strict'
++    var w = borderWidths[i]
++    r = borderColors[4*i]   * 255.0
++    g = borderColors[4*i+1] * 255.0
++    b = borderColors[4*i+2] * 255.0
++    a = borderColors[4*i+3] * 255.0
+ 
+-module.exports = createSelectBuffer
++    for(var j=0; j<border.coords.length; j+=2) {
++      v_position[2*ptr]   = x
++      v_position[2*ptr+1] = y
++      v_offset[2*ptr]     = -(s*(border.coords[j]  -gx)+w*border.normals[j])
++      v_offset[2*ptr+1]   = -(s*(border.coords[j+1]-gy)+w*border.normals[j+1])
++      v_color[4*ptr]      = r
++      v_color[4*ptr+1]    = g
++      v_color[4*ptr+2]    = b
++      v_color[4*ptr+3]    = a
++      v_ids[ptr]          = i
+ 
+-var createFBO = require('gl-fbo')
+-var pool      = require('typedarray-pool')
+-var ndarray   = require('ndarray')
++      ptr += 1
++    }
++  }
+ 
+-var nextPow2  = require('bit-twiddle').nextPow2
++  this.numPoints = glyphs.length
++  this.numVertices = numVertices
+ 
+-var selectRange = require('cwise/lib/wrapper')({"args":["array",{"offset":[0,0,1],"array":0},{"offset":[0,0,2],"array":0},{"offset":[0,0,3],"array":0},"scalar","scalar","index"],"pre":{"body":"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"body":{"body":"{if(255>_inline_52_arg0_||255>_inline_52_arg1_||255>_inline_52_arg2_||255>_inline_52_arg3_){var _inline_52_l=_inline_52_arg4_-_inline_52_arg6_[0],_inline_52_a=_inline_52_arg5_-_inline_52_arg6_[1],_inline_52_f=_inline_52_l*_inline_52_l+_inline_52_a*_inline_52_a;_inline_52_f<this_closestD2&&(this_closestD2=_inline_52_f,this_closestX=_inline_52_arg6_[0],this_closestY=_inline_52_arg6_[1])}}","args":[{"name":"_inline_52_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg4_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg5_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg6_","lvalue":false,"rvalue":true,"count":4}],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":["_inline_52_a","_inline_52_f","_inline_52_l"]},"post":{"body":"{return[this_closestX,this_closestY,this_closestD2]}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
++  this.positionBuffer.update(v_position)
++  this.offsetBuffer.update(v_offset)
++  this.colorBuffer.update(v_color)
++  this.idBuffer.update(v_ids)
+ 
+-function SelectResult(x, y, id, value, distance) {
+-  this.coord = [x, y]
+-  this.id = id
+-  this.value = value
+-  this.distance = distance
++  pool.free(v_position)
++  pool.free(v_offset)
++  pool.free(v_color)
++  pool.free(v_ids)
+ }
+ 
+-function SelectBuffer(gl, fbo, buffer) {
+-  this.gl     = gl
+-  this.fbo    = fbo
+-  this.buffer = buffer
+-  this._readTimeout = null
+-  var self = this
+-
+-  this._readCallback = function() {
+-    if(!self.gl) {
+-      return
+-    }
+-    fbo.bind()
+-    gl.readPixels(0,0,fbo.shape[0],fbo.shape[1],gl.RGBA,gl.UNSIGNED_BYTE,self.buffer)
+-    self._readTimeout = null
+-  }
++proto.dispose = function() {
++  this.shader.dispose()
++  this.pickShader.dispose()
++  this.positionBuffer.dispose()
++  this.offsetBuffer.dispose()
++  this.colorBuffer.dispose()
++  this.idBuffer.dispose()
++  this.plot.removeObject(this)
+ }
+ 
+-var proto = SelectBuffer.prototype
+-
+-Object.defineProperty(proto, 'shape', {
+-  get: function() {
+-    if(!this.gl) {
+-      return [0,0]
+-    }
+-    return this.fbo.shape.slice()
+-  },
+-  set: function(v) {
+-    if(!this.gl) {
+-      return
+-    }
+-    this.fbo.shape = v
+-    var c = this.fbo.shape[0]
+-    var r = this.fbo.shape[1]
+-    if(r*c*4 > this.buffer.length) {
+-      pool.free(this.buffer)
+-      var buffer = this.buffer = pool.mallocUint8(nextPow2(r*c*4))
+-      for(var i=0; i<r*c*4; ++i) {
+-        buffer[i] = 0xff
+-      }
+-    }
+-    return v
+-  }
+-})
++function createFancyScatter2D(plot, options) {
++  var gl = plot.gl
+ 
+-proto.begin = function() {
+-  var gl = this.gl
+-  var shape = this.shape
+-  if(!gl) {
+-    return
+-  }
++  var shader      = createShader(gl, shaders.vertex,     shaders.fragment)
++  var pickShader  = createShader(gl, shaders.pickVertex, shaders.pickFragment)
+ 
+-  this.fbo.bind()
+-  gl.clearColor(1,1,1,1)
+-  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+-}
++  var positionBuffer  = createBuffer(gl)
++  var offsetBuffer    = createBuffer(gl)
++  var colorBuffer     = createBuffer(gl)
++  var idBuffer        = createBuffer(gl)
+ 
+-proto.end = function() {
+-  var gl = this.gl
+-  if(!gl) {
+-    return
+-  }
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-  if(!this._readTimeout) {
+-    clearTimeout(this._readTimeout)
+-  }
+-  this._readTimeout = setTimeout(this._readCallback, 1)
++  var scatter = new GLScatterFancy(
++    plot,
++    shader,
++    pickShader,
++    positionBuffer,
++    offsetBuffer,
++    colorBuffer,
++    idBuffer)
++
++  scatter.update(options)
++
++  plot.addObject(scatter)
++
++  return scatter
+ }
+ 
+-proto.query = function(x, y, radius) {
+-  if(!this.gl) {
+-    return null
+-  }
++},{"./lib/shaders":86,"gl-buffer":63,"gl-shader":96,"text-cache":156,"typedarray-pool":162,"vectorize-text":165}],88:[function(require,module,exports){
+ 
+-  var shape = this.fbo.shape.slice()
+ 
+-  x = x|0
+-  y = y|0
+-  if(typeof radius !== 'number') {
+-    radius = 1.0
+-  }
++exports.pointVertex       = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute float weight;\n\nuniform mat3 matrix;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}\n"
++exports.pointFragment     = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}\n"
++exports.pickVertex        = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n"
++exports.pickFragment      = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"
+ 
+-  var x0 = Math.min(Math.max(x - radius, 0), shape[0])|0
+-  var x1 = Math.min(Math.max(x + radius, 0), shape[0])|0
+-  var y0 = Math.min(Math.max(y - radius, 0), shape[1])|0
+-  var y1 = Math.min(Math.max(y + radius, 0), shape[1])|0
++},{}],89:[function(require,module,exports){
++arguments[4][45][0].apply(exports,arguments)
++},{"dup":45}],90:[function(require,module,exports){
++'use strict'
+ 
+-  if(x1 <= x0 || y1 <= y0) {
+-    return null
+-  }
++module.exports = sortLevels
+ 
+-  var dims   = [x1-x0,y1-y0]
+-  var region = ndarray(
+-    this.buffer,
+-    [dims[0], dims[1], 4],
+-    [4, shape[0]*4, 1],
+-    4*(x0 + shape[0]*y0));
++var INSERT_SORT_CUTOFF = 32
+ 
+-  var closest = selectRange(region.hi(dims[0],dims[1],1), radius, radius)
+-  var dx = closest[0]
+-  var dy = closest[1]
+-  if(dx < 0 || Math.pow(this.radius, 2) < closest[2]) {
+-    return null
++function sortLevels(data_levels, data_points, data_ids, data_weights, n0) {
++  if (n0 <= 4*INSERT_SORT_CUTOFF) {
++    insertionSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
+   }
++}
+ 
+-  var c0 = region.get(dx, dy, 0)
+-  var c1 = region.get(dx, dy, 1)
+-  var c2 = region.get(dx, dy, 2)
+-  var c3 = region.get(dx, dy, 3)
++function insertionSort(left, right, data_levels, data_points, data_ids, data_weights) {
++  for(var i=left+1; i<=right; ++i) {
++    var a_level  = data_levels[i]
++    var a_x      = data_points[2*i]
++    var a_y      = data_points[2*i+1]
++    var a_id     = data_ids[i]
++    var a_weight = data_weights[i]
+ 
+-  return new SelectResult(
+-     (dx + x0)|0,
+-     (dy + y0)|0,
+-     c0,
+-     [c1, c2, c3],
+-     Math.sqrt(closest[2]))
+-}
++    var j = i
++    while(j > left) {
++      var b_level = data_levels[j-1]
++      var b_x     = data_points[2*(j-1)]
++      if(((b_level - a_level) || (a_x - b_x)) >= 0) {
++        break
++      }
++      data_levels[j]      = b_level
++      data_points[2*j]    = b_x
++      data_points[2*j+1]  = data_points[2*j-1]
++      data_ids[j]         = data_ids[j-1]
++      data_weights[j]     = data_weights[j-1]
++      j -= 1
++    }
+ 
+-proto.dispose = function() {
+-  if(!this.gl) {
+-    return
+-  }
+-  this.fbo.dispose()
+-  pool.free(this.buffer)
+-  this.gl = null
+-  if(this._readTimeout) {
+-    clearTimeout(this._readTimeout)
++    data_levels[j]     = a_level
++    data_points[2*j]   = a_x
++    data_points[2*j+1] = a_y
++    data_ids[j]        = a_id
++    data_weights[j]    = a_weight
+   }
+ }
+ 
+-function createSelectBuffer(gl, shape) {
+-  var fbo = createFBO(gl, shape)
+-  var buffer = pool.mallocUint8(shape[0]*shape[1]*4)
+-  return new SelectBuffer(gl, fbo, buffer)
++function swap(i, j, data_levels, data_points, data_ids, data_weights) {
++  var a_level = data_levels[i]
++  var a_x     = data_points[2*i]
++  var a_y     = data_points[2*i+1]
++  var a_id    = data_ids[i]
++  var a_weight = data_weights[i]
++
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
++
++  data_levels[j]     = a_level
++  data_points[2*j]   = a_x
++  data_points[2*j+1] = a_y
++  data_ids[j]        = a_id
++  data_weights[j]    = a_weight
+ }
+ 
+-},{"bit-twiddle":9,"cwise/lib/wrapper":61,"gl-fbo":72,"ndarray":131,"typedarray-pool":151}],96:[function(require,module,exports){
+-'use strict'
++function move(i, j, data_levels, data_points, data_ids, data_weights) {
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
++}
+ 
+-var createUniformWrapper   = require('./lib/create-uniforms')
+-var createAttributeWrapper = require('./lib/create-attributes')
+-var makeReflect            = require('./lib/reflect')
+-var shaderCache            = require('./lib/shader-cache')
+-var runtime                = require('./lib/runtime-reflect')
+-var GLError                = require("./lib/GLError")
++function rotate(i, j, k, data_levels, data_points, data_ids, data_weights) {
++  var a_level = data_levels[i]
++  var a_x     = data_points[2*i]
++  var a_y     = data_points[2*i+1]
++  var a_id    = data_ids[i]
++  var a_weight = data_weights[i]
+ 
+-//Shader object
+-function Shader(gl) {
+-  this.gl         = gl
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
+ 
+-  //Default initialize these to null
+-  this._vref      =
+-  this._fref      =
+-  this._relink    =
+-  this.vertShader =
+-  this.fragShader =
+-  this.program    =
+-  this.attributes =
+-  this.uniforms   =
+-  this.types      = null
++  data_levels[j]     = data_levels[k]
++  data_points[2*j]   = data_points[2*k]
++  data_points[2*j+1] = data_points[2*k+1]
++  data_ids[j]        = data_ids[k]
++  data_weights[j]    = data_weights[k]
++
++  data_levels[k]     = a_level
++  data_points[2*k]   = a_x
++  data_points[2*k+1] = a_y
++  data_ids[k]        = a_id
++  data_weights[k]    = a_weight
+ }
+ 
+-var proto = Shader.prototype
++function shufflePivot(
++  i, j,
++  a_level, a_x, a_y, a_id, a_weight,
++  data_levels, data_points, data_ids, data_weights) {
+ 
+-proto.bind = function() {
+-  if(!this.program) {
+-    this._relink()
+-  }
+-  this.gl.useProgram(this.program)
+-}
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
+ 
+-proto.dispose = function() {
+-  if(this._fref) {
+-    this._fref.dispose()
+-  }
+-  if(this._vref) {
+-    this._vref.dispose()
+-  }
+-  this.attributes =
+-  this.types      =
+-  this.vertShader =
+-  this.fragShader =
+-  this.program    =
+-  this._relink    =
+-  this._fref      =
+-  this._vref      = null
++  data_levels[j]     = a_level
++  data_points[2*j]   = a_x
++  data_points[2*j+1] = a_y
++  data_ids[j]        = a_id
++  data_weights[j]    = a_weight
+ }
+ 
+-function compareAttributes(a, b) {
+-  if(a.name < b.name) {
+-    return -1
+-  }
+-  return 1
++function compare(i, j, data_levels, data_points, data_ids) {
++  return ((data_levels[i] - data_levels[j]) ||
++          (data_points[2*j] - data_points[2*i]) ||
++          (data_ids[i] - data_ids[j])) < 0
+ }
+ 
+-//Update export hook for glslify-live
+-proto.update = function(
+-    vertSource
+-  , fragSource
+-  , uniforms
+-  , attributes) {
++function comparePivot(i, level, x, y, id, data_levels, data_points, data_ids) {
++  return ((level - data_levels[i]) ||
++          (data_points[2*i] - x) ||
++          (id - data_ids[i])) < 0
++}
+ 
+-  //If only one object passed, assume glslify style output
+-  if(!fragSource || arguments.length === 1) {
+-    var obj = vertSource
+-    vertSource = obj.vertex
+-    fragSource = obj.fragment
+-    uniforms   = obj.uniforms
+-    attributes = obj.attributes
++function quickSort(left, right, data_levels, data_points, data_ids, data_weights) {
++  var sixth = (right - left + 1) / 6 | 0,
++      index1 = left + sixth,
++      index5 = right - sixth,
++      index3 = left + right >> 1,
++      index2 = index3 - sixth,
++      index4 = index3 + sixth,
++      el1 = index1,
++      el2 = index2,
++      el3 = index3,
++      el4 = index4,
++      el5 = index5,
++      less = left + 1,
++      great = right - 1,
++      tmp = 0
++  if(compare(el1, el2, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el1
++    el1 = el2
++    el2 = tmp
+   }
+-
+-  var wrapper = this
+-  var gl      = wrapper.gl
+-
+-  //Compile vertex and fragment shaders
+-  var pvref = wrapper._vref
+-  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
+-  if(pvref) {
+-    pvref.dispose()
++  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
+   }
+-  wrapper.vertShader = wrapper._vref.shader
+-  var pfref = this._fref
+-  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
+-  if(pfref) {
+-    pfref.dispose()
++  if(compare(el1, el3, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el1
++    el1 = el3
++    el3 = tmp
++  }
++  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el1, el4, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el1
++    el1 = el4
++    el4 = tmp
++  }
++  if(compare(el3, el4, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el3
++    el3 = el4
++    el4 = tmp
++  }
++  if(compare(el2, el5, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el2
++    el2 = el5
++    el5 = tmp
++  }
++  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
+   }
+-  wrapper.fragShader = wrapper._fref.shader
+ 
+-  //If uniforms/attributes is not specified, use RT reflection
+-  if(!uniforms || !attributes) {
++  var pivot1_level  = data_levels[el2]
++  var pivot1_x      = data_points[2*el2]
++  var pivot1_y      = data_points[2*el2+1]
++  var pivot1_id     = data_ids[el2]
++  var pivot1_weight = data_weights[el2]
+ 
+-    //Create initial test program
+-    var testProgram = gl.createProgram()
+-    gl.attachShader(testProgram, wrapper.fragShader)
+-    gl.attachShader(testProgram, wrapper.vertShader)
+-    gl.linkProgram(testProgram)
+-    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
+-      var errLog = gl.getProgramInfoLog(testProgram)
+-      throw new GLError(errLog, 'Error linking program:' + errLog)
+-    }
++  var pivot2_level  = data_levels[el4]
++  var pivot2_x      = data_points[2*el4]
++  var pivot2_y      = data_points[2*el4+1]
++  var pivot2_id     = data_ids[el4]
++  var pivot2_weight = data_weights[el4]
+ 
+-    //Load data from runtime
+-    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
+-    attributes = attributes || runtime.attributes(gl, testProgram)
++  var ptr0 = el1
++  var ptr2 = el3
++  var ptr4 = el5
++  var ptr5 = index1
++  var ptr6 = index3
++  var ptr7 = index5
+ 
+-    //Release test program
+-    gl.deleteProgram(testProgram)
++  var level_x = data_levels[ptr0]
++  var level_y = data_levels[ptr2]
++  var level_z = data_levels[ptr4]
++  data_levels[ptr5] = level_x
++  data_levels[ptr6] = level_y
++  data_levels[ptr7] = level_z
++
++  for (var i1 = 0; i1 < 2; ++i1) {
++    var x = data_points[2*ptr0+i1]
++    var y = data_points[2*ptr2+i1]
++    var z = data_points[2*ptr4+i1]
++    data_points[2*ptr5+i1] = x
++    data_points[2*ptr6+i1] = y
++    data_points[2*ptr7+i1] = z
+   }
+ 
+-  //Sort attributes lexicographically
+-  // overrides undefined WebGL behavior for attribute locations
+-  attributes = attributes.slice()
+-  attributes.sort(compareAttributes)
++  var id_x = data_ids[ptr0]
++  var id_y = data_ids[ptr2]
++  var id_z = data_ids[ptr4]
++  data_ids[ptr5] = id_x
++  data_ids[ptr6] = id_y
++  data_ids[ptr7] = id_z
+ 
+-  //Convert attribute types, read out locations
+-  var attributeUnpacked  = []
+-  var attributeNames     = []
+-  var attributeLocations = []
+-  for(var i=0; i<attributes.length; ++i) {
+-    var attr = attributes[i]
+-    if(attr.type.indexOf('mat') >= 0) {
+-      var size = attr.type.charAt(attr.type.length-1)|0
+-      var locVector = new Array(size)
+-      for(var j=0; j<size; ++j) {
+-        locVector[j] = attributeLocations.length
+-        attributeNames.push(attr.name + '[' + j + ']')
+-        if(typeof attr.location === 'number') {
+-          attributeLocations.push(attr.location + j)
+-        } else if(Array.isArray(attr.location) &&
+-                  attr.location.length === size &&
+-                  typeof attr.location[j] === 'number') {
+-          attributeLocations.push(attr.location[j]|0)
+-        } else {
+-          attributeLocations.push(-1)
+-        }
++  var weight_x = data_weights[ptr0]
++  var weight_y = data_weights[ptr2]
++  var weight_z = data_weights[ptr4]
++  data_weights[ptr5] = weight_x
++  data_weights[ptr6] = weight_y
++  data_weights[ptr7] = weight_z
++
++  move(index2, left,  data_levels, data_points, data_ids, data_weights)
++  move(index4, right, data_levels, data_points, data_ids, data_weights)
++  for (var k = less; k <= great; ++k) {
++    if (comparePivot(k,
++        pivot1_level, pivot1_x, pivot1_y, pivot1_id,
++        data_levels, data_points, data_ids)) {
++      if (k !== less) {
++        swap(k, less, data_levels, data_points, data_ids, data_weights)
+       }
+-      attributeUnpacked.push({
+-        name: attr.name,
+-        type: attr.type,
+-        locations: locVector
+-      })
++      ++less;
+     } else {
+-      attributeUnpacked.push({
+-        name: attr.name,
+-        type: attr.type,
+-        locations: [ attributeLocations.length ]
+-      })
+-      attributeNames.push(attr.name)
+-      if(typeof attr.location === 'number') {
+-        attributeLocations.push(attr.location|0)
+-      } else {
+-        attributeLocations.push(-1)
++      if (!comparePivot(k,
++          pivot2_level, pivot2_x, pivot2_y, pivot2_id,
++          data_levels, data_points, data_ids)) {
++        while (true) {
++          if (!comparePivot(great,
++              pivot2_level, pivot2_x, pivot2_y, pivot2_id,
++              data_levels, data_points, data_ids)) {
++            if (--great < k) {
++              break;
++            }
++            continue;
++          } else {
++            if (comparePivot(great,
++                pivot1_level, pivot1_x, pivot1_y, pivot1_id,
++                data_levels, data_points, data_ids)) {
++              rotate(k, less, great, data_levels, data_points, data_ids, data_weights)
++              ++less;
++              --great;
++            } else {
++              swap(k, great, data_levels, data_points, data_ids, data_weights)
++              --great;
++            }
++            break;
++          }
++        }
+       }
+     }
+   }
++  shufflePivot(left, less-1, pivot1_level, pivot1_x, pivot1_y, pivot1_id, pivot1_weight, data_levels, data_points, data_ids, data_weights)
++  shufflePivot(right, great+1, pivot2_level, pivot2_x, pivot2_y, pivot2_id, pivot2_weight, data_levels, data_points, data_ids, data_weights)
++  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
++    insertionSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
++  }
++  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
++    insertionSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
++  }
++  if (great - less <= INSERT_SORT_CUTOFF) {
++    insertionSort(less, great, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(less, great, data_levels, data_points, data_ids, data_weights)
++  }
++}
+ 
+-  //For all unspecified attributes, assign them lexicographically min attribute
+-  var curLocation = 0
+-  for(var i=0; i<attributeLocations.length; ++i) {
+-    if(attributeLocations[i] < 0) {
+-      while(attributeLocations.indexOf(curLocation) >= 0) {
+-        curLocation += 1
++},{}],91:[function(require,module,exports){
++'use strict'
++
++var pool = require('typedarray-pool')
++
++var sortLevels = require('./lib/sort')
++
++module.exports = snapPoints
++
++function partition(points, ids, start, end, lox, loy, hix, hiy) {
++  var mid = start
++  for(var i=start; i<end; ++i) {
++    var x  = points[2*i]
++    var y  = points[2*i+1]
++    var s  = ids[i]
++    if(lox <= x && x <= hix &&
++       loy <= y && y <= hiy) {
++      if(i === mid) {
++        mid += 1
++      } else {
++        points[2*i]     = points[2*mid]
++        points[2*i+1]   = points[2*mid+1]
++        ids[i]          = ids[mid]
++        points[2*mid]   = x
++        points[2*mid+1] = y
++        ids[mid]        = s
++        mid += 1
+       }
+-      attributeLocations[i] = curLocation
+     }
+   }
++  return mid
++}
++
++function SnapInterval(pixelSize, offset, count) {
++  this.pixelSize  = pixelSize
++  this.offset     = offset
++  this.count      = count
++}
++
++function snapPoints(points, ids, weights, bounds) {
++  var n    = points.length >>> 1
++  if(n < 1) {
++    return []
++  }
++
++  var lox =  Infinity, loy =  Infinity
++  var hix = -Infinity, hiy = -Infinity
++  for(var i=0; i<n; ++i) {
++    var x = points[2*i]
++    var y = points[2*i+1]
++    lox = Math.min(lox, x)
++    hix = Math.max(hix, x)
++    loy = Math.min(loy, y)
++    hiy = Math.max(hiy, y)
++    ids[i] = i
++  }
+ 
+-  //Rebuild program and recompute all uniform locations
+-  var uniformLocations = new Array(uniforms.length)
+-  function relink() {
+-    wrapper.program = shaderCache.program(
+-        gl
+-      , wrapper._vref
+-      , wrapper._fref
+-      , attributeNames
+-      , attributeLocations)
+-
+-    for(var i=0; i<uniforms.length; ++i) {
+-      uniformLocations[i] = gl.getUniformLocation(
+-          wrapper.program
+-        , uniforms[i].name)
+-    }
++  if(lox === hix) {
++    hix += 1 + Math.abs(hix)
++  }
++  if(loy === hiy) {
++    hiy += 1 + Math.abs(hix)
+   }
+ 
+-  //Perform initial linking, reuse program used for reflection
+-  relink()
++  //Calculate diameter
++  var scaleX = 1.0 / (hix - lox)
++  var scaleY = 1.0 / (hiy - loy)
++  var diam = Math.max(hix - lox, hiy - loy)
+ 
+-  //Save relinking procedure, defer until runtime
+-  wrapper._relink = relink
++  bounds = bounds || [0,0,0,0]
+ 
+-  //Generate type info
+-  wrapper.types = {
+-    uniforms:   makeReflect(uniforms),
+-    attributes: makeReflect(attributes)
+-  }
++  bounds[0] = lox
++  bounds[1] = loy
++  bounds[2] = hix
++  bounds[3] = hiy
+ 
+-  //Generate attribute wrappers
+-  wrapper.attributes = createAttributeWrapper(
+-      gl
+-    , wrapper
+-    , attributeUnpacked
+-    , attributeLocations)
++  var levels = pool.mallocInt32(n)
++  var ptr = 0
+ 
+-  //Generate uniform wrappers
+-  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
+-      gl
+-    , wrapper
+-    , uniforms
+-    , uniformLocations))
+-}
++  function snapRec(x, y, diam, start, end, level) {
++    var diam_2 = diam * 0.5
++    var offset = start + 1
++    var count = end - start
++    weights[ptr] = count
++    levels[ptr++] = level
++    for(var i=0; i<2; ++i) {
++      for(var j=0; j<2; ++j) {
++        var nx = x+i*diam_2
++        var ny = y+j*diam_2
++        var nextOffset = partition(
++            points
++          , ids
++          , offset
++          , end
++          , nx, ny
++          , nx+diam_2, ny+diam_2)
++        if(nextOffset === offset) {
++          continue
++        }
++        if(nextOffset - offset >= Math.max(0.9 * count, 32)) {
++          var mid = (end + start)>>>1
++          snapRec(nx, ny, diam_2, offset, mid, level+1)
++          offset = mid
++        }
++        snapRec(nx, ny, diam_2, offset, nextOffset, level+1)
++        offset = nextOffset
++      }
++    }
++  }
++  snapRec(lox, loy, diam, 0, n, 0)
++  sortLevels(levels, points, ids, weights, n)
+ 
+-//Compiles and links a shader program with the given attribute and vertex list
+-function createShader(
+-    gl
+-  , vertSource
+-  , fragSource
+-  , uniforms
+-  , attributes) {
++  var lod         = []
++  var lastLevel   = 0
++  var prevOffset  = n
++  for(var ptr=n-1; ptr>=0; --ptr) {
++    points[2*ptr]   = (points[2*ptr]   - lox) * scaleX
++    points[2*ptr+1] = (points[2*ptr+1] - loy) * scaleY
+ 
+-  var shader = new Shader(gl)
++    var level = levels[ptr]
++    if(level === lastLevel) {
++      continue
++    }
+ 
+-  shader.update(
+-      vertSource
+-    , fragSource
+-    , uniforms
+-    , attributes)
++    lod.push(new SnapInterval(
++      diam * Math.pow(0.5, level),
++      ptr+1,
++      prevOffset - (ptr+1)
++    ))
++    prevOffset = ptr+1
+ 
+-  return shader
+-}
++    lastLevel = level
++  }
+ 
+-module.exports = createShader
++  lod.push(new SnapInterval(diam * Math.pow(0.5, level+1), 0, prevOffset))
++  pool.free(levels)
+ 
+-},{"./lib/GLError":97,"./lib/create-attributes":98,"./lib/create-uniforms":99,"./lib/reflect":100,"./lib/runtime-reflect":101,"./lib/shader-cache":102}],97:[function(require,module,exports){
+-function GLError (rawError, shortMessage, longMessage) {
+-    this.shortMessage = shortMessage || ''
+-    this.longMessage = longMessage || ''
+-    this.rawError = rawError || ''
+-    this.message =
+-      'gl-shader: ' + (shortMessage || rawError || '') +
+-      (longMessage ? '\n'+longMessage : '')
+-    this.stack = (new Error()).stack
++  return lod
+ }
+-GLError.prototype = new Error
+-GLError.prototype.name = 'GLError'
+-GLError.prototype.constructor = GLError
+-module.exports = GLError
+ 
+-},{}],98:[function(require,module,exports){
++},{"./lib/sort":90,"typedarray-pool":162}],92:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createAttributeWrapper
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var bsearch = require('binary-search-bounds')
++var snapPoints = require('snap-points-2d')
+ 
+-var GLError = require("./GLError")
++var pool = require('typedarray-pool')
+ 
+-function ShaderAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , constFunc) {
+-  this._gl        = gl
+-  this._wrapper   = wrapper
+-  this._index     = index
+-  this._locations = locations
+-  this._dimension = dimension
+-  this._constFunc = constFunc
+-}
++var SHADERS = require('./lib/shader')
+ 
+-var proto = ShaderAttribute.prototype
++module.exports = createScatter2D
+ 
+-proto.pointer = function setAttribPointer(
+-    type
+-  , normalized
+-  , stride
+-  , offset) {
++function Scatter2D(plot, offsetBuffer, pickBuffer, weightBuffer, shader, pickShader) {
++  this.plot           = plot
++  this.offsetBuffer   = offsetBuffer
++  this.pickBuffer     = pickBuffer
++  this.weightBuffer   = weightBuffer
++  this.shader         = shader
++  this.pickShader     = pickShader
++  this.scales         = []
++  this.size           = 12.0
++  this.borderSize     = 1.0
++  this.pointCount     = 0
++  this.color          = [1,0,0,1]
++  this.borderColor    = [0,0,0,1]
++  this.bounds         = [Infinity,Infinity,-Infinity,-Infinity]
++  this.pickOffset     = 0
++  this.points         = null
++  this.xCoords        = null
++}
+ 
+-  var self      = this
+-  var gl        = self._gl
+-  var location  = self._locations[self._index]
++var proto = Scatter2D.prototype
+ 
+-  gl.vertexAttribPointer(
+-      location
+-    , self._dimension
+-    , type || gl.FLOAT
+-    , !!normalized
+-    , stride || 0
+-    , offset || 0)
+-  gl.enableVertexAttribArray(location)
++proto.dispose = function() {
++  this.shader.dispose()
++  this.pickShader.dispose()
++  this.offsetBuffer.dispose()
++  this.pickBuffer.dispose()
++  if(this.xCoords) {
++    pool.free(this.xCoords)
++  }
++  this.plot.removeObject(this)
+ }
+ 
+-proto.set = function(x0, x1, x2, x3) {
+-  return this._constFunc(this._locations[this._index], x0, x1, x2, x3)
+-}
++proto.update = function(options) {
++  options = options || {}
+ 
+-Object.defineProperty(proto, 'location', {
+-  get: function() {
+-    return this._locations[this._index]
+-  }
+-  , set: function(v) {
+-    if(v !== this._locations[this._index]) {
+-      this._locations[this._index] = v|0
+-      this._wrapper.program = null
++  function dflt(opt, value) {
++    if(opt in options) {
++      return options[opt]
+     }
+-    return v|0
++    return value
+   }
+-})
+ 
+-//Adds a vector attribute to obj
+-function addVectorAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , obj
+-  , name) {
++  this.size         = dflt('size', 12.0)
++  this.color        = dflt('color', [1,0,0,1]).slice()
++  this.borderSize   = dflt('borderSize', 1)
++  this.borderColor  = dflt('borderColor', [0,0,0,1]).slice()
+ 
+-  //Construct constant function
+-  var constFuncArgs = [ 'gl', 'v' ]
+-  var varNames = []
+-  for(var i=0; i<dimension; ++i) {
+-    constFuncArgs.push('x'+i)
+-    varNames.push('x'+i)
++  //Update point data
++  if(this.xCoords) {
++    pool.free(this.xCoords)
+   }
+-  constFuncArgs.push(
+-    'if(x0.length===void 0){return gl.vertexAttrib' +
+-    dimension + 'f(v,' +
+-    varNames.join() +
+-    ')}else{return gl.vertexAttrib' +
+-    dimension +
+-    'fv(v,x0)}')
+-  var constFunc = Function.apply(null, constFuncArgs)
++  var data          = options.positions
++  var packed        = pool.mallocFloat32(data.length)
++  var packedId      = pool.mallocInt32(data.length>>>1)
++  packed.set(data)
++  var packedW       = pool.mallocFloat32(data.length)
++  this.points       = data
++  this.scales       = snapPoints(packed, packedId, packedW, this.bounds)
++  this.offsetBuffer.update(packed)
++  this.pickBuffer.update(packedId)
++  this.weightBuffer.update(packedW)
++  var xCoords      = pool.mallocFloat32(data.length>>>1)
++  for(var i=0,j=0; i<data.length; i+=2,++j) {
++    xCoords[j] = packed[i]
++  }
++  pool.free(packedId)
++  pool.free(packed)
++  pool.free(packedW)
+ 
+-  //Create attribute wrapper
+-  var attr = new ShaderAttribute(
+-      gl
+-    , wrapper
+-    , index
+-    , locations
+-    , dimension
+-    , constFunc)
++  this.xCoords = xCoords
+ 
+-  //Create accessor
+-  Object.defineProperty(obj, name, {
+-    set: function(x) {
+-      gl.disableVertexAttribArray(locations[index])
+-      constFunc(gl, locations[index], x)
+-      return x
+-    }
+-    , get: function() {
+-      return attr
+-    }
+-    , enumerable: true
+-  })
++  this.pointCount = data.length >>> 1
++  this.pickOffset = 0
+ }
+ 
+-function addMatrixAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , obj
+-  , name) {
+-
+-  var parts = new Array(dimension)
+-  var attrs = new Array(dimension)
+-  for(var i=0; i<dimension; ++i) {
+-    addVectorAttribute(
+-        gl
+-      , wrapper
+-      , index[i]
+-      , locations
+-      , dimension
+-      , parts
+-      , i)
+-    attrs[i] = parts[i]
+-  }
+-
+-  Object.defineProperty(parts, 'location', {
+-    set: function(v) {
+-      if(Array.isArray(v)) {
+-        for(var i=0; i<dimension; ++i) {
+-          attrs[i].location = v[i]
+-        }
+-      } else {
+-        for(var i=0; i<dimension; ++i) {
+-          attrs[i].location = v + i
+-        }
+-      }
+-      return v
+-    }
+-    , get: function() {
+-      var result = new Array(dimension)
+-      for(var i=0; i<dimension; ++i) {
+-        result[i] = locations[index[i]]
+-      }
+-      return result
+-    }
+-    , enumerable: true
+-  })
++proto.drawPick = (function() {
++  var MATRIX = [1,0,0,
++                0,1,0,
++                0,0,1]
++  var PICK_VEC4 = [0,0,0,0]
++return function(pickOffset) {
++  var plot          = this.plot
++  var shader        = this.pickShader
++  var scales        = this.scales
++  var offsetBuffer  = this.offsetBuffer
++  var pickBuffer    = this.pickBuffer
++  var bounds        = this.bounds
++  var size          = this.size
++  var borderSize    = this.borderSize
++  var gl            = plot.gl
++  var pixelRatio    = plot.pickPixelRatio
++  var viewBox       = plot.viewBox
++  var dataBox       = plot.dataBox
+ 
+-  parts.pointer = function(type, normalized, stride, offset) {
+-    type       = type || gl.FLOAT
+-    normalized = !!normalized
+-    stride     = stride || (dimension * dimension)
+-    offset     = offset || 0
+-    for(var i=0; i<dimension; ++i) {
+-      var location = locations[index[i]]
+-      gl.vertexAttribPointer(
+-            location
+-          , dimension
+-          , type
+-          , normalized
+-          , stride
+-          , offset + i * dimension)
+-      gl.enableVertexAttribArray(location)
+-    }
++  if(this.pointCount === 0) {
++    return pickOffset
+   }
+ 
+-  var scratch = new Array(dimension)
+-  var vertexAttrib = gl['vertexAttrib' + dimension + 'fv']
++  var boundX  = bounds[2] - bounds[0]
++  var boundY  = bounds[3] - bounds[1]
++  var dataX   = dataBox[2] - dataBox[0]
++  var dataY   = dataBox[3] - dataBox[1]
++  var screenX = (viewBox[2] - viewBox[0]) * pixelRatio / plot.pixelRatio
++  var screenY = (viewBox[3] - viewBox[1]) * pixelRatio / plot.pixelRatio
+ 
+-  Object.defineProperty(obj, name, {
+-    set: function(x) {
+-      for(var i=0; i<dimension; ++i) {
+-        var loc = locations[index[i]]
+-        gl.disableVertexAttribArray(loc)
+-        if(Array.isArray(x[0])) {
+-          vertexAttrib.call(gl, loc, x[i])
+-        } else {
+-          for(var j=0; j<dimension; ++j) {
+-            scratch[j] = x[dimension*i + j]
+-          }
+-          vertexAttrib.call(gl, loc, scratch)
+-        }
+-      }
+-      return x
+-    }
+-    , get: function() {
+-      return parts
+-    }
+-    , enumerable: true
+-  })
+-}
++  var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
++  var targetScale = pixelSize
+ 
+-//Create shims for attributes
+-function createAttributeWrapper(
+-    gl
+-  , wrapper
+-  , attributes
+-  , locations) {
+ 
+-  var obj = {}
+-  for(var i=0, n=attributes.length; i<n; ++i) {
++  MATRIX[0] = 2.0 * boundX / dataX
++  MATRIX[4] = 2.0 * boundY / dataY
++  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-    var a = attributes[i]
+-    var name = a.name
+-    var type = a.type
+-    var locs = a.locations
++  this.pickOffset = pickOffset
++  PICK_VEC4[0] = ( pickOffset      & 0xff)
++  PICK_VEC4[1] = ((pickOffset>>8)  & 0xff)
++  PICK_VEC4[2] = ((pickOffset>>16) & 0xff)
++  PICK_VEC4[3] = ((pickOffset>>24) & 0xff)
+ 
+-    switch(type) {
+-      case 'bool':
+-      case 'int':
+-      case 'float':
+-        addVectorAttribute(
+-            gl
+-          , wrapper
+-          , locs[0]
+-          , locations
+-          , 1
+-          , obj
+-          , name)
+-      break
++  shader.bind()
++  shader.uniforms.matrix      = MATRIX
++  shader.uniforms.color       = this.color
++  shader.uniforms.borderColor = this.borderColor
++  shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
++  shader.uniforms.pickOffset  = PICK_VEC4
+ 
+-      default:
+-        if(type.indexOf('vec') >= 0) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
+-          }
+-          addVectorAttribute(
+-              gl
+-            , wrapper
+-            , locs[0]
+-            , locations
+-            , d
+-            , obj
+-            , name)
+-        } else if(type.indexOf('mat') >= 0) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
+-          }
+-          addMatrixAttribute(
+-              gl
+-            , wrapper
+-            , locs
+-            , locations
+-            , d
+-            , obj
+-            , name)
+-        } else {
+-          throw new GLError('', 'Unknown data type for attribute ' + name + ': ' + type)
+-        }
+-      break
+-    }
++  if(this.borderSize === 0) {
++    shader.uniforms.centerFraction = 2.0;
++  } else {
++    shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
+   }
+-  return obj
+-}
+ 
+-},{"./GLError":97}],99:[function(require,module,exports){
+-'use strict'
++  offsetBuffer.bind()
++  shader.attributes.position.pointer()
++  pickBuffer.bind()
++  shader.attributes.pickId.pointer(gl.UNSIGNED_BYTE)
+ 
+-var coallesceUniforms = require('./reflect')
+-var GLError = require("./GLError")
++  var xCoords = this.xCoords
++  var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
++  var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
+ 
+-module.exports = createUniformWrapper
++  for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
++    var lod     = scales[scaleNum]
++    if(lod.pixelSize < pixelSize && scaleNum > 1) {
++      continue
++    }
+ 
+-//Binds a function and returns a value
+-function identity(x) {
+-  var c = new Function('y', 'return function(){return y}')
+-  return c(x)
+-}
++    var intervalStart = lod.offset
++    var intervalEnd   = lod.count + intervalStart
+ 
+-function makeVector(length, fill) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = fill
++    var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
++    var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
++
++    if(endOffset > startOffset) {
++      gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
++    }
+   }
+-  return result
++
++  return pickOffset + this.pointCount
+ }
++})()
+ 
+-//Create shims for uniforms
+-function createUniformWrapper(gl, wrapper, uniforms, locations) {
++proto.draw = (function() {
++  var MATRIX = [1, 0, 0,
++                0, 1, 0,
++                0, 0, 1]
+ 
+-  function makeGetter(index) {
+-    var proc = new Function(
+-        'gl'
+-      , 'wrapper'
+-      , 'locations'
+-      , 'return function(){return gl.getUniform(wrapper.program,locations[' + index + '])}')
+-    return proc(gl, wrapper, locations)
+-  }
++  return function() {
++    var plot          = this.plot
++    var shader        = this.shader
++    var scales        = this.scales
++    var offsetBuffer  = this.offsetBuffer
++    var bounds        = this.bounds
++    var size          = this.size
++    var borderSize    = this.borderSize
++    var gl            = plot.gl
++    var pixelRatio    = plot.pixelRatio
++    var viewBox       = plot.viewBox
++    var dataBox       = plot.dataBox
+ 
+-  function makePropSetter(path, index, type) {
+-    switch(type) {
+-      case 'bool':
+-      case 'int':
+-      case 'sampler2D':
+-      case 'samplerCube':
+-        return 'gl.uniform1i(locations[' + index + '],obj' + path + ')'
+-      case 'float':
+-        return 'gl.uniform1f(locations[' + index + '],obj' + path + ')'
+-      default:
+-        var vidx = type.indexOf('vec')
+-        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type')
+-          }
+-          switch(type.charAt(0)) {
+-            case 'b':
+-            case 'i':
+-              return 'gl.uniform' + d + 'iv(locations[' + index + '],obj' + path + ')'
+-            case 'v':
+-              return 'gl.uniform' + d + 'fv(locations[' + index + '],obj' + path + ')'
+-            default:
+-              throw new GLError('', 'Unrecognized data type for vector ' + name + ': ' + type)
+-          }
+-        } else if(type.indexOf('mat') === 0 && type.length === 4) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
+-          }
+-          return 'gl.uniformMatrix' + d + 'fv(locations[' + index + '],false,obj' + path + ')'
+-        } else {
+-          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
+-        }
+-      break
++    if(this.pointCount === 0) {
++      return
+     }
+-  }
+ 
+-  function enumerateIndices(prefix, type) {
+-    if(typeof type !== 'object') {
+-      return [ [prefix, type] ]
+-    }
+-    var indices = []
+-    for(var id in type) {
+-      var prop = type[id]
+-      var tprefix = prefix
+-      if(parseInt(id) + '' === id) {
+-        tprefix += '[' + id + ']'
+-      } else {
+-        tprefix += '.' + id
+-      }
+-      if(typeof prop === 'object') {
+-        indices.push.apply(indices, enumerateIndices(tprefix, prop))
+-      } else {
+-        indices.push([tprefix, prop])
+-      }
+-    }
+-    return indices
+-  }
++    var boundX  = bounds[2] - bounds[0]
++    var boundY  = bounds[3] - bounds[1]
++    var dataX   = dataBox[2] - dataBox[0]
++    var dataY   = dataBox[3] - dataBox[1]
++    var screenX = viewBox[2] - viewBox[0]
++    var screenY = viewBox[3] - viewBox[1]
+ 
+-  function makeSetter(type) {
+-    var code = [ 'return function updateProperty(obj){' ]
+-    var indices = enumerateIndices('', type)
+-    for(var i=0; i<indices.length; ++i) {
+-      var item = indices[i]
+-      var path = item[0]
+-      var idx  = item[1]
+-      if(locations[idx]) {
+-        code.push(makePropSetter(path, idx, uniforms[idx].type))
+-      }
+-    }
+-    code.push('return obj}')
+-    var proc = new Function('gl', 'locations', code.join('\n'))
+-    return proc(gl, locations)
+-  }
++    var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
++    var targetScale = pixelSize
+ 
+-  function defaultValue(type) {
+-    switch(type) {
+-      case 'bool':
+-        return false
+-      case 'int':
+-      case 'sampler2D':
+-      case 'samplerCube':
+-        return 0
+-      case 'float':
+-        return 0.0
+-      default:
+-        var vidx = type.indexOf('vec')
+-        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type')
+-          }
+-          if(type.charAt(0) === 'b') {
+-            return makeVector(d, false)
+-          }
+-          return makeVector(d, 0)
+-        } else if(type.indexOf('mat') === 0 && type.length === 4) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
+-          }
+-          return makeVector(d*d, 0)
+-        } else {
+-          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
+-        }
+-      break
+-    }
+-  }
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-  function storeProperty(obj, prop, type) {
+-    if(typeof type === 'object') {
+-      var child = processObject(type)
+-      Object.defineProperty(obj, prop, {
+-        get: identity(child),
+-        set: makeSetter(type),
+-        enumerable: true,
+-        configurable: false
+-      })
+-    } else {
+-      if(locations[type]) {
+-        Object.defineProperty(obj, prop, {
+-          get: makeGetter(type),
+-          set: makeSetter(type),
+-          enumerable: true,
+-          configurable: false
+-        })
+-      } else {
+-        obj[prop] = defaultValue(uniforms[type].type)
+-      }
+-    }
+-  }
++    shader.bind()
++    shader.uniforms.matrix      = MATRIX
++    shader.uniforms.color       = this.color
++    shader.uniforms.borderColor = this.borderColor
++    shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
++    shader.uniforms.useWeight   = 1
+ 
+-  function processObject(obj) {
+-    var result
+-    if(Array.isArray(obj)) {
+-      result = new Array(obj.length)
+-      for(var i=0; i<obj.length; ++i) {
+-        storeProperty(result, i, obj[i])
+-      }
++    if(this.borderSize === 0) {
++      shader.uniforms.centerFraction = 2.0;
+     } else {
+-      result = {}
+-      for(var id in obj) {
+-        storeProperty(result, id, obj[id])
+-      }
++      shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
+     }
+-    return result
+-  }
+ 
+-  //Return data
+-  var coallesced = coallesceUniforms(uniforms, true)
+-  return {
+-    get: identity(processObject(coallesced)),
+-    set: makeSetter(coallesced),
+-    enumerable: true,
+-    configurable: true
+-  }
+-}
++    offsetBuffer.bind()
++    shader.attributes.position.pointer()
+ 
+-},{"./GLError":97,"./reflect":100}],100:[function(require,module,exports){
+-'use strict'
++    this.weightBuffer.bind()
++    shader.attributes.weight.pointer()
+ 
+-module.exports = makeReflectTypes
++    var xCoords = this.xCoords
++    var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
++    var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
+ 
+-//Construct type info for reflection.
+-//
+-// This iterates over the flattened list of uniform type values and smashes them into a JSON object.
+-//
+-// The leaves of the resulting object are either indices or type strings representing primitive glslify types
+-function makeReflectTypes(uniforms, useIndex) {
+-  var obj = {}
+-  for(var i=0; i<uniforms.length; ++i) {
+-    var n = uniforms[i].name
+-    var parts = n.split(".")
+-    var o = obj
+-    for(var j=0; j<parts.length; ++j) {
+-      var x = parts[j].split("[")
+-      if(x.length > 1) {
+-        if(!(x[0] in o)) {
+-          o[x[0]] = []
+-        }
+-        o = o[x[0]]
+-        for(var k=1; k<x.length; ++k) {
+-          var y = parseInt(x[k])
+-          if(k<x.length-1 || j<parts.length-1) {
+-            if(!(y in o)) {
+-              if(k < x.length-1) {
+-                o[y] = []
+-              } else {
+-                o[y] = {}
+-              }
+-            }
+-            o = o[y]
+-          } else {
+-            if(useIndex) {
+-              o[y] = i
+-            } else {
+-              o[y] = uniforms[i].type
+-            }
+-          }
+-        }
+-      } else if(j < parts.length-1) {
+-        if(!(x[0] in o)) {
+-          o[x[0]] = {}
+-        }
+-        o = o[x[0]]
+-      } else {
+-        if(useIndex) {
+-          o[x[0]] = i
+-        } else {
+-          o[x[0]] = uniforms[i].type
+-        }
++    var firstLevel = true
++
++    for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
++      var lod     = scales[scaleNum]
++      if(lod.pixelSize < pixelSize && scaleNum > 1) {
++        continue
+       }
+-    }
+-  }
+-  return obj
+-}
+-},{}],101:[function(require,module,exports){
+-'use strict'
+ 
+-exports.uniforms    = runtimeUniforms
+-exports.attributes  = runtimeAttributes
++      var intervalStart = lod.offset
++      var intervalEnd   = lod.count + intervalStart
+ 
+-var GL_TO_GLSL_TYPES = {
+-  'FLOAT':       'float',
+-  'FLOAT_VEC2':  'vec2',
+-  'FLOAT_VEC3':  'vec3',
+-  'FLOAT_VEC4':  'vec4',
+-  'INT':         'int',
+-  'INT_VEC2':    'ivec2',
+-  'INT_VEC3':    'ivec3',
+-  'INT_VEC4':    'ivec4',
+-  'BOOL':        'bool',
+-  'BOOL_VEC2':   'bvec2',
+-  'BOOL_VEC3':   'bvec3',
+-  'BOOL_VEC4':   'bvec4',
+-  'FLOAT_MAT2':  'mat2',
+-  'FLOAT_MAT3':  'mat3',
+-  'FLOAT_MAT4':  'mat4',
+-  'SAMPLER_2D':  'sampler2D',
+-  'SAMPLER_CUBE':'samplerCube'
+-}
++      var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
++      var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
+ 
+-var GL_TABLE = null
++      if(endOffset > startOffset) {
++        gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
++      }
+ 
+-function getType(gl, type) {
+-  if(!GL_TABLE) {
+-    var typeNames = Object.keys(GL_TO_GLSL_TYPES)
+-    GL_TABLE = {}
+-    for(var i=0; i<typeNames.length; ++i) {
+-      var tn = typeNames[i]
+-      GL_TABLE[gl[tn]] = GL_TO_GLSL_TYPES[tn]
++      if(firstLevel) {
++        firstLevel = false
++        shader.uniforms.useWeight = 0
++      }
+     }
+   }
+-  return GL_TABLE[type]
+-}
++})()
+ 
+-function runtimeUniforms(gl, program) {
+-  var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS)
+-  var result = []
+-  for(var i=0; i<numUniforms; ++i) {
+-    var info = gl.getActiveUniform(program, i)
+-    if(info) {
+-      var type = getType(gl, info.type)
+-      if(info.size > 1) {
+-        for(var j=0; j<info.size; ++j) {
+-          result.push({
+-            name: info.name.replace('[0]', '[' + j + ']'),
+-            type: type
+-          })
+-        }
+-      } else {
+-        result.push({
+-          name: info.name,
+-          type: type
+-        })
+-      }
+-    }
++proto.pick = function(x, y, value) {
++  var pickOffset = this.pickOffset
++  var pointCount = this.pointCount
++  if(value < pickOffset || value >= pickOffset + pointCount) {
++    return null
++  }
++  var pointId = value - pickOffset
++  var points = this.points
++  return {
++    object:  this,
++    pointId: pointId,
++    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+   }
+-  return result
+ }
+ 
+-function runtimeAttributes(gl, program) {
+-  var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES)
+-  var result = []
+-  for(var i=0; i<numAttributes; ++i) {
+-    var info = gl.getActiveAttrib(program, i)
+-    if(info) {
+-      result.push({
+-        name: info.name,
+-        type: getType(gl, info.type)
+-      })
+-    }
+-  }
++function createScatter2D(plot, options) {
++  var gl     = plot.gl
++  var buffer = createBuffer(gl)
++  var pickBuffer = createBuffer(gl)
++  var weightBuffer = createBuffer(gl)
++  var shader = createShader(gl, SHADERS.pointVertex, SHADERS.pointFragment)
++  var pickShader = createShader(gl, SHADERS.pickVertex, SHADERS.pickFragment)
++
++  var result = new Scatter2D(
++    plot, buffer, pickBuffer, weightBuffer, shader, pickShader)
++  result.update(options)
++
++  //Register with plot
++  plot.addObject(result)
++
+   return result
+ }
+ 
+-},{}],102:[function(require,module,exports){
++},{"./lib/shader":88,"binary-search-bounds":89,"gl-buffer":63,"gl-shader":96,"snap-points-2d":91,"typedarray-pool":162}],93:[function(require,module,exports){
+ 'use strict'
+ 
+-exports.shader   = getShaderReference
+-exports.program  = createProgram
+ 
+-var GLError = require("./GLError")
+-var formatCompilerError = require('gl-format-compiler-error');
+ 
+-var weakMap = typeof WeakMap === 'undefined' ? require('weakmap-shim') : WeakMap
+-var CACHE = new weakMap()
++exports.boxVertex = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n"
++exports.boxFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"
+ 
+-var SHADER_COUNTER = 0
++},{}],94:[function(require,module,exports){
++'use strict'
+ 
+-function ShaderReference(id, src, type, shader, programs, count, cache) {
+-  this.id       = id
+-  this.src      = src
+-  this.type     = type
+-  this.shader   = shader
+-  this.count    = count
+-  this.programs = []
+-  this.cache    = cache
+-}
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
+ 
+-ShaderReference.prototype.dispose = function() {
+-  if(--this.count === 0) {
+-    var cache    = this.cache
+-    var gl       = cache.gl
++var SHADERS = require('./lib/shaders')
+ 
+-    //Remove program references
+-    var programs = this.programs
+-    for(var i=0, n=programs.length; i<n; ++i) {
+-      var p = cache.programs[programs[i]]
+-      if(p) {
+-        delete cache.programs[i]
+-        gl.deleteProgram(p)
+-      }
+-    }
++module.exports = createSelectBox
+ 
+-    //Remove shader reference
+-    gl.deleteShader(this.shader)
+-    delete cache.shaders[(this.type === gl.FRAGMENT_SHADER)|0][this.src]
+-  }
+-}
++function SelectBox(plot, boxBuffer, boxShader) {
++  this.plot = plot
++  this.boxBuffer = boxBuffer
++  this.boxShader = boxShader
+ 
+-function ContextCache(gl) {
+-  this.gl       = gl
+-  this.shaders  = [{}, {}]
+-  this.programs = {}
+-}
++  this.enabled = true
+ 
+-var proto = ContextCache.prototype
++  this.selectBox = [Infinity,Infinity,-Infinity,-Infinity]
+ 
+-function compileShader(gl, type, src) {
+-  var shader = gl.createShader(type)
+-  gl.shaderSource(shader, src)
+-  gl.compileShader(shader)
+-  if(!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
+-    var errLog = gl.getShaderInfoLog(shader)
+-    try {
+-        var fmt = formatCompilerError(errLog, src, type);
+-    } catch (e){
+-        console.warn('Failed to format compiler error: ' + e);
+-        throw new GLError(errLog, 'Error compiling shader:\n' + errLog)
+-    }
+-    throw new GLError(errLog, fmt.short, fmt.long)
+-  }
+-  return shader
++  this.borderColor = [0,0,0,1]
++  this.innerFill   = false
++  this.innerColor  = [0,0,0,0.25]
++  this.outerFill   = true
++  this.outerColor  = [0,0,0,0.5]
++  this.borderWidth = 10
+ }
+ 
+-proto.getShaderReference = function(type, src) {
+-  var gl      = this.gl
+-  var shaders = this.shaders[(type === gl.FRAGMENT_SHADER)|0]
+-  var shader  = shaders[src]
+-  if(!shader || !gl.isShader(shader.shader)) {
+-    var shaderObj = compileShader(gl, type, src)
+-    shader = shaders[src] = new ShaderReference(
+-      SHADER_COUNTER++,
+-      src,
+-      type,
+-      shaderObj,
+-      [],
+-      1,
+-      this)
+-  } else {
+-    shader.count += 1
+-  }
+-  return shader
+-}
++var proto = SelectBox.prototype
+ 
+-function linkProgram(gl, vshader, fshader, attribs, locations) {
+-  var program = gl.createProgram()
+-  gl.attachShader(program, vshader)
+-  gl.attachShader(program, fshader)
+-  for(var i=0; i<attribs.length; ++i) {
+-    gl.bindAttribLocation(program, locations[i], attribs[i])
+-  }
+-  gl.linkProgram(program)
+-  if(!gl.getProgramParameter(program, gl.LINK_STATUS)) {
+-    var errLog = gl.getProgramInfoLog(program)
+-    throw new GLError(errLog, 'Error linking program: ' + errLog)
++proto.draw = function() {
++  if(!this.enabled) {
++    return
+   }
+-  return program
+-}
+ 
+-proto.getProgram = function(vref, fref, attribs, locations) {
+-  var token = [vref.id, fref.id, attribs.join(':'), locations.join(':')].join('@')
+-  var prog  = this.programs[token]
+-  if(!prog || !this.gl.isProgram(prog)) {
+-    this.programs[token] = prog = linkProgram(
+-      this.gl,
+-      vref.shader,
+-      fref.shader,
+-      attribs,
+-      locations)
+-    vref.programs.push(token)
+-    fref.programs.push(token)
+-  }
+-  return prog
+-}
++  var plot         = this.plot
++  var selectBox    = this.selectBox
++  var lineWidth    = this.borderWidth
++
++  var innerFill    = this.innerFill
++  var innerColor   = this.innerColor
++  var outerFill    = this.outerFill
++  var outerColor   = this.outerColor
++  var borderColor  = this.borderColor
++
++  var boxes        = plot.box
++  var screenBox    = plot.screenBox
++  var dataBox      = plot.dataBox
++  var viewBox      = plot.viewBox
++  var pixelRatio   = plot.pixelRatio
++
++  //Map select box into pixel coordinates
++  var loX = (selectBox[0]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
++  var loY = (selectBox[1]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
++  var hiX = (selectBox[2]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
++  var hiY = (selectBox[3]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
++
++  loX = Math.max(loX, viewBox[0])
++  loY = Math.max(loY, viewBox[1])
++  hiX = Math.min(hiX, viewBox[2])
++  hiY = Math.min(hiY, viewBox[3])
+ 
+-function getCache(gl) {
+-  var ctxCache = CACHE.get(gl)
+-  if(!ctxCache) {
+-    ctxCache = new ContextCache(gl)
+-    CACHE.set(gl, ctxCache)
++  if(hiX < loX || hiY < loY) {
++    return
+   }
+-  return ctxCache
+-}
+ 
+-function getShaderReference(gl, type, src) {
+-  return getCache(gl).getShaderReference(type, src)
+-}
++  boxes.bind()
+ 
+-function createProgram(gl, vref, fref, attribs, locations) {
+-  return getCache(gl).getProgram(vref, fref, attribs, locations)
+-}
++  //Draw box
++  var screenWidth  = screenBox[2] - screenBox[0]
++  var screenHeight = screenBox[3] - screenBox[1]
+ 
+-},{"./GLError":97,"gl-format-compiler-error":103,"weakmap-shim":113}],103:[function(require,module,exports){
++  if(this.outerFill) {
++    boxes.drawBox(0, 0, screenWidth, loY, outerColor)
++    boxes.drawBox(0, loY, loX, hiY, outerColor)
++    boxes.drawBox(0, hiY, screenWidth, screenHeight, outerColor)
++    boxes.drawBox(hiX, loY, screenWidth, hiY, outerColor)
++  }
+ 
+-var sprintf = require('sprintf-js').sprintf;
+-var glConstants = require('gl-constants/lookup');
+-var shaderName = require('glsl-shader-name');
+-var addLineNumbers = require('add-line-numbers');
++  if(this.innerFill) {
++    boxes.drawBox(loX, loY, hiX, hiY, innerColor)
++  }
+ 
+-module.exports = formatCompilerError;
++  //Draw border
++  if(lineWidth > 0) {
+ 
+-function formatCompilerError(errLog, src, type) {
+-    "use strict";
++    //Draw border
++    var w = lineWidth * pixelRatio
++    boxes.drawBox(loX-w, loY-w, hiX+w, loY+w, borderColor)
++    boxes.drawBox(loX-w, hiY-w, hiX+w, hiY+w, borderColor)
++    boxes.drawBox(loX-w, loY-w, loX+w, hiY+w, borderColor)
++    boxes.drawBox(hiX-w, loY-w, hiX+w, hiY+w, borderColor)
++  }
++}
+ 
+-    var name = shaderName(src) || 'of unknown name (see npm glsl-shader-name)';
++proto.update = function(options) {
++  options = options || {}
+ 
+-    var typeName = 'unknown type';
+-    if (type !== undefined) {
+-        typeName = type === glConstants.FRAGMENT_SHADER ? 'fragment' : 'vertex'
+-    }
++  this.innerFill    = !!options.innerFill
++  this.outerFill    = !!options.outerFill
++  this.innerColor   = (options.innerColor   || [0,0,0,0.5]).slice()
++  this.outerColor   = (options.outerColor   || [0,0,0,0.5]).slice()
++  this.borderColor  = (options.borderColor || [0,0,0,1]).slice()
++  this.borderWidth  = options.borderWidth || 0
++  this.selectBox    = (options.selectBox || this.selectBox).slice()
++}
+ 
+-    var longForm = sprintf('Error compiling %s shader %s:\n', typeName, name);
+-    var shortForm = sprintf("%s%s", longForm, errLog);
++proto.dispose = function() {
++  this.boxBuffer.dispose()
++  this.boxShader.dispose()
++  this.plot.removeOverlay(this)
++}
+ 
+-    var errorStrings = errLog.split('\n');
+-    var errors = {};
++function createSelectBox(plot, options) {
++  var gl = plot.gl
++  var buffer = createBuffer(gl, [
++    0, 0,
++    0, 1,
++    1, 0,
++    1, 1 ])
++  var shader = createShader(gl, SHADERS.boxVertex, SHADERS.boxFragment)
++  var selectBox = new SelectBox(plot, buffer, shader)
++  selectBox.update(options)
++  plot.addOverlay(selectBox)
++  return selectBox
++}
+ 
+-    for (var i = 0; i < errorStrings.length; i++) {
+-        var errorString = errorStrings[i];
+-        if (errorString === '') continue;
+-        var lineNo = parseInt(errorString.split(':')[2]);
+-        if (isNaN(lineNo)) {
+-            throw new Error(sprintf('Could not parse error: %s', errorString));
+-        }
+-        errors[lineNo] = errorString;
+-    }
++},{"./lib/shaders":93,"gl-buffer":63,"gl-shader":96}],95:[function(require,module,exports){
++'use strict'
+ 
+-    var lines = addLineNumbers(src).split('\n');
++module.exports = createSelectBuffer
+ 
+-    for (var i = 0; i < lines.length; i++) {
+-        if (!errors[i+3] && !errors[i+2] && !errors[i+1]) continue;
+-        var line = lines[i];
+-        longForm += line + '\n';
+-        if (errors[i+1]) {
+-            var e = errors[i+1];
+-            e = e.substr(e.split(':', 3).join(':').length + 1).trim();
+-            longForm += sprintf('^^^ %s\n\n', e);
+-        }
+-    }
++var createFBO = require('gl-fbo')
++var pool      = require('typedarray-pool')
++var ndarray   = require('ndarray')
+ 
+-    return {
+-        long: longForm.trim(),
+-        short: shortForm.trim()
+-    };
+-}
++var nextPow2  = require('bit-twiddle').nextPow2
+ 
++var selectRange = require('cwise/lib/wrapper')({"args":["array",{"offset":[0,0,1],"array":0},{"offset":[0,0,2],"array":0},{"offset":[0,0,3],"array":0},"scalar","scalar","index"],"pre":{"body":"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"body":{"body":"{if(_inline_55_arg0_<255||_inline_55_arg1_<255||_inline_55_arg2_<255||_inline_55_arg3_<255){var _inline_55_l=_inline_55_arg4_-_inline_55_arg6_[0],_inline_55_a=_inline_55_arg5_-_inline_55_arg6_[1],_inline_55_f=_inline_55_l*_inline_55_l+_inline_55_a*_inline_55_a;_inline_55_f<this_closestD2&&(this_closestD2=_inline_55_f,this_closestX=_inline_55_arg6_[0],this_closestY=_inline_55_arg6_[1])}}","args":[{"name":"_inline_55_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg4_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg5_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg6_","lvalue":false,"rvalue":true,"count":4}],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":["_inline_55_a","_inline_55_f","_inline_55_l"]},"post":{"body":"{return[this_closestX,this_closestY,this_closestD2]}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
+ 
+-},{"add-line-numbers":104,"gl-constants/lookup":107,"glsl-shader-name":108,"sprintf-js":110}],104:[function(require,module,exports){
+-var padLeft = require('pad-left')
++function SelectResult(x, y, id, value, distance) {
++  this.coord = [x, y]
++  this.id = id
++  this.value = value
++  this.distance = distance
++}
+ 
+-module.exports = addLineNumbers
+-function addLineNumbers (string, start, delim) {
+-  start = typeof start === 'number' ? start : 1
+-  delim = delim || ': '
++function SelectBuffer(gl, fbo, buffer) {
++  this.gl     = gl
++  this.fbo    = fbo
++  this.buffer = buffer
++  this._readTimeout = null
++  var self = this
+ 
+-  var lines = string.split(/\r?\n/)
+-  var totalDigits = String(lines.length + start - 1).length
+-  return lines.map(function (line, i) {
+-    var c = i + start
+-    var digits = String(c).length
+-    var prefix = padLeft(c, totalDigits - digits)
+-    return prefix + delim + line
+-  }).join('\n')
++  this._readCallback = function() {
++    if(!self.gl) {
++      return
++    }
++    fbo.bind()
++    gl.readPixels(0,0,fbo.shape[0],fbo.shape[1],gl.RGBA,gl.UNSIGNED_BYTE,self.buffer)
++    self._readTimeout = null
++  }
+ }
+ 
+-},{"pad-left":105}],105:[function(require,module,exports){
+-/*!
+- * pad-left <https://github.com/jonschlinkert/pad-left>
+- *
+- * Copyright (c) 2014-2015, Jon Schlinkert.
+- * Licensed under the MIT license.
+- */
++var proto = SelectBuffer.prototype
+ 
+-'use strict';
++Object.defineProperty(proto, 'shape', {
++  get: function() {
++    if(!this.gl) {
++      return [0,0]
++    }
++    return this.fbo.shape.slice()
++  },
++  set: function(v) {
++    if(!this.gl) {
++      return
++    }
++    this.fbo.shape = v
++    var c = this.fbo.shape[0]
++    var r = this.fbo.shape[1]
++    if(r*c*4 > this.buffer.length) {
++      pool.free(this.buffer)
++      var buffer = this.buffer = pool.mallocUint8(nextPow2(r*c*4))
++      for(var i=0; i<r*c*4; ++i) {
++        buffer[i] = 0xff
++      }
++    }
++    return v
++  }
++})
+ 
+-var repeat = require('repeat-string');
++proto.begin = function() {
++  var gl = this.gl
++  var shape = this.shape
++  if(!gl) {
++    return
++  }
+ 
+-module.exports = function padLeft(str, num, ch) {
+-  ch = typeof ch !== 'undefined' ? (ch + '') : ' ';
+-  return repeat(ch, num) + str;
+-};
+-},{"repeat-string":132}],106:[function(require,module,exports){
+-module.exports = {
+-  0: 'NONE',
+-  1: 'ONE',
+-  2: 'LINE_LOOP',
+-  3: 'LINE_STRIP',
+-  4: 'TRIANGLES',
+-  5: 'TRIANGLE_STRIP',
+-  6: 'TRIANGLE_FAN',
+-  256: 'DEPTH_BUFFER_BIT',
+-  512: 'NEVER',
+-  513: 'LESS',
+-  514: 'EQUAL',
+-  515: 'LEQUAL',
+-  516: 'GREATER',
+-  517: 'NOTEQUAL',
+-  518: 'GEQUAL',
+-  519: 'ALWAYS',
+-  768: 'SRC_COLOR',
+-  769: 'ONE_MINUS_SRC_COLOR',
+-  770: 'SRC_ALPHA',
+-  771: 'ONE_MINUS_SRC_ALPHA',
+-  772: 'DST_ALPHA',
+-  773: 'ONE_MINUS_DST_ALPHA',
+-  774: 'DST_COLOR',
+-  775: 'ONE_MINUS_DST_COLOR',
+-  776: 'SRC_ALPHA_SATURATE',
+-  1024: 'STENCIL_BUFFER_BIT',
+-  1028: 'FRONT',
+-  1029: 'BACK',
+-  1032: 'FRONT_AND_BACK',
+-  1280: 'INVALID_ENUM',
+-  1281: 'INVALID_VALUE',
+-  1282: 'INVALID_OPERATION',
+-  1285: 'OUT_OF_MEMORY',
+-  1286: 'INVALID_FRAMEBUFFER_OPERATION',
+-  2304: 'CW',
+-  2305: 'CCW',
+-  2849: 'LINE_WIDTH',
+-  2884: 'CULL_FACE',
+-  2885: 'CULL_FACE_MODE',
+-  2886: 'FRONT_FACE',
+-  2928: 'DEPTH_RANGE',
+-  2929: 'DEPTH_TEST',
+-  2930: 'DEPTH_WRITEMASK',
+-  2931: 'DEPTH_CLEAR_VALUE',
+-  2932: 'DEPTH_FUNC',
+-  2960: 'STENCIL_TEST',
+-  2961: 'STENCIL_CLEAR_VALUE',
+-  2962: 'STENCIL_FUNC',
+-  2963: 'STENCIL_VALUE_MASK',
+-  2964: 'STENCIL_FAIL',
+-  2965: 'STENCIL_PASS_DEPTH_FAIL',
+-  2966: 'STENCIL_PASS_DEPTH_PASS',
+-  2967: 'STENCIL_REF',
+-  2968: 'STENCIL_WRITEMASK',
+-  2978: 'VIEWPORT',
+-  3024: 'DITHER',
+-  3042: 'BLEND',
+-  3088: 'SCISSOR_BOX',
+-  3089: 'SCISSOR_TEST',
+-  3106: 'COLOR_CLEAR_VALUE',
+-  3107: 'COLOR_WRITEMASK',
+-  3317: 'UNPACK_ALIGNMENT',
+-  3333: 'PACK_ALIGNMENT',
+-  3379: 'MAX_TEXTURE_SIZE',
+-  3386: 'MAX_VIEWPORT_DIMS',
+-  3408: 'SUBPIXEL_BITS',
+-  3410: 'RED_BITS',
+-  3411: 'GREEN_BITS',
+-  3412: 'BLUE_BITS',
+-  3413: 'ALPHA_BITS',
+-  3414: 'DEPTH_BITS',
+-  3415: 'STENCIL_BITS',
+-  3553: 'TEXTURE_2D',
+-  4352: 'DONT_CARE',
+-  4353: 'FASTEST',
+-  4354: 'NICEST',
+-  5120: 'BYTE',
+-  5121: 'UNSIGNED_BYTE',
+-  5122: 'SHORT',
+-  5123: 'UNSIGNED_SHORT',
+-  5124: 'INT',
+-  5125: 'UNSIGNED_INT',
+-  5126: 'FLOAT',
+-  5386: 'INVERT',
+-  5890: 'TEXTURE',
+-  6401: 'STENCIL_INDEX',
+-  6402: 'DEPTH_COMPONENT',
+-  6406: 'ALPHA',
+-  6407: 'RGB',
+-  6408: 'RGBA',
+-  6409: 'LUMINANCE',
+-  6410: 'LUMINANCE_ALPHA',
+-  7680: 'KEEP',
+-  7681: 'REPLACE',
+-  7682: 'INCR',
+-  7683: 'DECR',
+-  7936: 'VENDOR',
+-  7937: 'RENDERER',
+-  7938: 'VERSION',
+-  9728: 'NEAREST',
+-  9729: 'LINEAR',
+-  9984: 'NEAREST_MIPMAP_NEAREST',
+-  9985: 'LINEAR_MIPMAP_NEAREST',
+-  9986: 'NEAREST_MIPMAP_LINEAR',
+-  9987: 'LINEAR_MIPMAP_LINEAR',
+-  10240: 'TEXTURE_MAG_FILTER',
+-  10241: 'TEXTURE_MIN_FILTER',
+-  10242: 'TEXTURE_WRAP_S',
+-  10243: 'TEXTURE_WRAP_T',
+-  10497: 'REPEAT',
+-  10752: 'POLYGON_OFFSET_UNITS',
+-  16384: 'COLOR_BUFFER_BIT',
+-  32769: 'CONSTANT_COLOR',
+-  32770: 'ONE_MINUS_CONSTANT_COLOR',
+-  32771: 'CONSTANT_ALPHA',
+-  32772: 'ONE_MINUS_CONSTANT_ALPHA',
+-  32773: 'BLEND_COLOR',
+-  32774: 'FUNC_ADD',
+-  32777: 'BLEND_EQUATION_RGB',
+-  32778: 'FUNC_SUBTRACT',
+-  32779: 'FUNC_REVERSE_SUBTRACT',
+-  32819: 'UNSIGNED_SHORT_4_4_4_4',
+-  32820: 'UNSIGNED_SHORT_5_5_5_1',
+-  32823: 'POLYGON_OFFSET_FILL',
+-  32824: 'POLYGON_OFFSET_FACTOR',
+-  32854: 'RGBA4',
+-  32855: 'RGB5_A1',
+-  32873: 'TEXTURE_BINDING_2D',
+-  32926: 'SAMPLE_ALPHA_TO_COVERAGE',
+-  32928: 'SAMPLE_COVERAGE',
+-  32936: 'SAMPLE_BUFFERS',
+-  32937: 'SAMPLES',
+-  32938: 'SAMPLE_COVERAGE_VALUE',
+-  32939: 'SAMPLE_COVERAGE_INVERT',
+-  32968: 'BLEND_DST_RGB',
+-  32969: 'BLEND_SRC_RGB',
+-  32970: 'BLEND_DST_ALPHA',
+-  32971: 'BLEND_SRC_ALPHA',
+-  33071: 'CLAMP_TO_EDGE',
+-  33170: 'GENERATE_MIPMAP_HINT',
+-  33189: 'DEPTH_COMPONENT16',
+-  33306: 'DEPTH_STENCIL_ATTACHMENT',
+-  33635: 'UNSIGNED_SHORT_5_6_5',
+-  33648: 'MIRRORED_REPEAT',
+-  33901: 'ALIASED_POINT_SIZE_RANGE',
+-  33902: 'ALIASED_LINE_WIDTH_RANGE',
+-  33984: 'TEXTURE0',
+-  33985: 'TEXTURE1',
+-  33986: 'TEXTURE2',
+-  33987: 'TEXTURE3',
+-  33988: 'TEXTURE4',
+-  33989: 'TEXTURE5',
+-  33990: 'TEXTURE6',
+-  33991: 'TEXTURE7',
+-  33992: 'TEXTURE8',
+-  33993: 'TEXTURE9',
+-  33994: 'TEXTURE10',
+-  33995: 'TEXTURE11',
+-  33996: 'TEXTURE12',
+-  33997: 'TEXTURE13',
+-  33998: 'TEXTURE14',
+-  33999: 'TEXTURE15',
+-  34000: 'TEXTURE16',
+-  34001: 'TEXTURE17',
+-  34002: 'TEXTURE18',
+-  34003: 'TEXTURE19',
+-  34004: 'TEXTURE20',
+-  34005: 'TEXTURE21',
+-  34006: 'TEXTURE22',
+-  34007: 'TEXTURE23',
+-  34008: 'TEXTURE24',
+-  34009: 'TEXTURE25',
+-  34010: 'TEXTURE26',
+-  34011: 'TEXTURE27',
+-  34012: 'TEXTURE28',
+-  34013: 'TEXTURE29',
+-  34014: 'TEXTURE30',
+-  34015: 'TEXTURE31',
+-  34016: 'ACTIVE_TEXTURE',
+-  34024: 'MAX_RENDERBUFFER_SIZE',
+-  34041: 'DEPTH_STENCIL',
+-  34055: 'INCR_WRAP',
+-  34056: 'DECR_WRAP',
+-  34067: 'TEXTURE_CUBE_MAP',
+-  34068: 'TEXTURE_BINDING_CUBE_MAP',
+-  34069: 'TEXTURE_CUBE_MAP_POSITIVE_X',
+-  34070: 'TEXTURE_CUBE_MAP_NEGATIVE_X',
+-  34071: 'TEXTURE_CUBE_MAP_POSITIVE_Y',
+-  34072: 'TEXTURE_CUBE_MAP_NEGATIVE_Y',
+-  34073: 'TEXTURE_CUBE_MAP_POSITIVE_Z',
+-  34074: 'TEXTURE_CUBE_MAP_NEGATIVE_Z',
+-  34076: 'MAX_CUBE_MAP_TEXTURE_SIZE',
+-  34338: 'VERTEX_ATTRIB_ARRAY_ENABLED',
+-  34339: 'VERTEX_ATTRIB_ARRAY_SIZE',
+-  34340: 'VERTEX_ATTRIB_ARRAY_STRIDE',
+-  34341: 'VERTEX_ATTRIB_ARRAY_TYPE',
+-  34342: 'CURRENT_VERTEX_ATTRIB',
+-  34373: 'VERTEX_ATTRIB_ARRAY_POINTER',
+-  34466: 'NUM_COMPRESSED_TEXTURE_FORMATS',
+-  34467: 'COMPRESSED_TEXTURE_FORMATS',
+-  34660: 'BUFFER_SIZE',
+-  34661: 'BUFFER_USAGE',
+-  34816: 'STENCIL_BACK_FUNC',
+-  34817: 'STENCIL_BACK_FAIL',
+-  34818: 'STENCIL_BACK_PASS_DEPTH_FAIL',
+-  34819: 'STENCIL_BACK_PASS_DEPTH_PASS',
+-  34877: 'BLEND_EQUATION_ALPHA',
+-  34921: 'MAX_VERTEX_ATTRIBS',
+-  34922: 'VERTEX_ATTRIB_ARRAY_NORMALIZED',
+-  34930: 'MAX_TEXTURE_IMAGE_UNITS',
+-  34962: 'ARRAY_BUFFER',
+-  34963: 'ELEMENT_ARRAY_BUFFER',
+-  34964: 'ARRAY_BUFFER_BINDING',
+-  34965: 'ELEMENT_ARRAY_BUFFER_BINDING',
+-  34975: 'VERTEX_ATTRIB_ARRAY_BUFFER_BINDING',
+-  35040: 'STREAM_DRAW',
+-  35044: 'STATIC_DRAW',
+-  35048: 'DYNAMIC_DRAW',
+-  35632: 'FRAGMENT_SHADER',
+-  35633: 'VERTEX_SHADER',
+-  35660: 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
+-  35661: 'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
+-  35663: 'SHADER_TYPE',
+-  35664: 'FLOAT_VEC2',
+-  35665: 'FLOAT_VEC3',
+-  35666: 'FLOAT_VEC4',
+-  35667: 'INT_VEC2',
+-  35668: 'INT_VEC3',
+-  35669: 'INT_VEC4',
+-  35670: 'BOOL',
+-  35671: 'BOOL_VEC2',
+-  35672: 'BOOL_VEC3',
+-  35673: 'BOOL_VEC4',
+-  35674: 'FLOAT_MAT2',
+-  35675: 'FLOAT_MAT3',
+-  35676: 'FLOAT_MAT4',
+-  35678: 'SAMPLER_2D',
+-  35680: 'SAMPLER_CUBE',
+-  35712: 'DELETE_STATUS',
+-  35713: 'COMPILE_STATUS',
+-  35714: 'LINK_STATUS',
+-  35715: 'VALIDATE_STATUS',
+-  35716: 'INFO_LOG_LENGTH',
+-  35717: 'ATTACHED_SHADERS',
+-  35718: 'ACTIVE_UNIFORMS',
+-  35719: 'ACTIVE_UNIFORM_MAX_LENGTH',
+-  35720: 'SHADER_SOURCE_LENGTH',
+-  35721: 'ACTIVE_ATTRIBUTES',
+-  35722: 'ACTIVE_ATTRIBUTE_MAX_LENGTH',
+-  35724: 'SHADING_LANGUAGE_VERSION',
+-  35725: 'CURRENT_PROGRAM',
+-  36003: 'STENCIL_BACK_REF',
+-  36004: 'STENCIL_BACK_VALUE_MASK',
+-  36005: 'STENCIL_BACK_WRITEMASK',
+-  36006: 'FRAMEBUFFER_BINDING',
+-  36007: 'RENDERBUFFER_BINDING',
+-  36048: 'FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE',
+-  36049: 'FRAMEBUFFER_ATTACHMENT_OBJECT_NAME',
+-  36050: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL',
+-  36051: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
+-  36053: 'FRAMEBUFFER_COMPLETE',
+-  36054: 'FRAMEBUFFER_INCOMPLETE_ATTACHMENT',
+-  36055: 'FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT',
+-  36057: 'FRAMEBUFFER_INCOMPLETE_DIMENSIONS',
+-  36061: 'FRAMEBUFFER_UNSUPPORTED',
+-  36064: 'COLOR_ATTACHMENT0',
+-  36096: 'DEPTH_ATTACHMENT',
+-  36128: 'STENCIL_ATTACHMENT',
+-  36160: 'FRAMEBUFFER',
+-  36161: 'RENDERBUFFER',
+-  36162: 'RENDERBUFFER_WIDTH',
+-  36163: 'RENDERBUFFER_HEIGHT',
+-  36164: 'RENDERBUFFER_INTERNAL_FORMAT',
+-  36168: 'STENCIL_INDEX8',
+-  36176: 'RENDERBUFFER_RED_SIZE',
+-  36177: 'RENDERBUFFER_GREEN_SIZE',
+-  36178: 'RENDERBUFFER_BLUE_SIZE',
+-  36179: 'RENDERBUFFER_ALPHA_SIZE',
+-  36180: 'RENDERBUFFER_DEPTH_SIZE',
+-  36181: 'RENDERBUFFER_STENCIL_SIZE',
+-  36194: 'RGB565',
+-  36336: 'LOW_FLOAT',
+-  36337: 'MEDIUM_FLOAT',
+-  36338: 'HIGH_FLOAT',
+-  36339: 'LOW_INT',
+-  36340: 'MEDIUM_INT',
+-  36341: 'HIGH_INT',
+-  36346: 'SHADER_COMPILER',
+-  36347: 'MAX_VERTEX_UNIFORM_VECTORS',
+-  36348: 'MAX_VARYING_VECTORS',
+-  36349: 'MAX_FRAGMENT_UNIFORM_VECTORS',
+-  37440: 'UNPACK_FLIP_Y_WEBGL',
+-  37441: 'UNPACK_PREMULTIPLY_ALPHA_WEBGL',
+-  37442: 'CONTEXT_LOST_WEBGL',
+-  37443: 'UNPACK_COLORSPACE_CONVERSION_WEBGL',
+-  37444: 'BROWSER_DEFAULT_WEBGL'
++  this.fbo.bind()
++  gl.clearColor(1,1,1,1)
++  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+ }
+ 
+-},{}],107:[function(require,module,exports){
+-var gl10 = require('./1.0/numbers')
+-
+-module.exports = function lookupConstant (number) {
+-  return gl10[number]
++proto.end = function() {
++  var gl = this.gl
++  if(!gl) {
++    return
++  }
++  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++  if(!this._readTimeout) {
++    clearTimeout(this._readTimeout)
++  }
++  this._readTimeout = setTimeout(this._readCallback, 1)
+ }
+ 
+-},{"./1.0/numbers":106}],108:[function(require,module,exports){
+-var tokenize = require('glsl-tokenizer')
+-var atob     = require('atob-lite')
+-
+-module.exports = getName
++proto.query = function(x, y, radius) {
++  if(!this.gl) {
++    return null
++  }
+ 
+-function getName(src) {
+-  var tokens = Array.isArray(src)
+-    ? src
+-    : tokenize(src)
++  var shape = this.fbo.shape.slice()
+ 
+-  for (var i = 0; i < tokens.length; i++) {
+-    var token = tokens[i]
+-    if (token.type !== 'preprocessor') continue
+-    var match = token.data.match(/\#define\s+SHADER_NAME(_B64)?\s+(.+)$/)
+-    if (!match) continue
+-    if (!match[2]) continue
++  x = x|0
++  y = y|0
++  if(typeof radius !== 'number') {
++    radius = 1.0
++  }
+ 
+-    var b64  = match[1]
+-    var name = match[2]
++  var x0 = Math.min(Math.max(x - radius, 0), shape[0])|0
++  var x1 = Math.min(Math.max(x + radius, 0), shape[0])|0
++  var y0 = Math.min(Math.max(y - radius, 0), shape[1])|0
++  var y1 = Math.min(Math.max(y + radius, 0), shape[1])|0
+ 
+-    return (b64 ? atob(name) : name).trim()
++  if(x1 <= x0 || y1 <= y0) {
++    return null
+   }
+-}
+ 
+-},{"atob-lite":109,"glsl-tokenizer":122}],109:[function(require,module,exports){
+-module.exports = function _atob(str) {
+-  return atob(str)
+-}
++  var dims   = [x1-x0,y1-y0]
++  var region = ndarray(
++    this.buffer,
++    [dims[0], dims[1], 4],
++    [4, shape[0]*4, 1],
++    4*(x0 + shape[0]*y0));
+ 
+-},{}],110:[function(require,module,exports){
+-(function(window) {
+-    var re = {
+-        not_string: /[^s]/,
+-        number: /[diefg]/,
+-        json: /[j]/,
+-        not_json: /[^j]/,
+-        text: /^[^\x25]+/,
+-        modulo: /^\x25{2}/,
+-        placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijosuxX])/,
+-        key: /^([a-z_][a-z_\d]*)/i,
+-        key_access: /^\.([a-z_][a-z_\d]*)/i,
+-        index_access: /^\[(\d+)\]/,
+-        sign: /^[\+\-]/
+-    }
++  var closest = selectRange(region.hi(dims[0],dims[1],1), radius, radius)
++  var dx = closest[0]
++  var dy = closest[1]
++  if(dx < 0 || Math.pow(this.radius, 2) < closest[2]) {
++    return null
++  }
+ 
+-    function sprintf() {
+-        var key = arguments[0], cache = sprintf.cache
+-        if (!(cache[key] && cache.hasOwnProperty(key))) {
+-            cache[key] = sprintf.parse(key)
+-        }
+-        return sprintf.format.call(null, cache[key], arguments)
+-    }
++  var c0 = region.get(dx, dy, 0)
++  var c1 = region.get(dx, dy, 1)
++  var c2 = region.get(dx, dy, 2)
++  var c3 = region.get(dx, dy, 3)
+ 
+-    sprintf.format = function(parse_tree, argv) {
+-        var cursor = 1, tree_length = parse_tree.length, node_type = "", arg, output = [], i, k, match, pad, pad_character, pad_length, is_positive = true, sign = ""
+-        for (i = 0; i < tree_length; i++) {
+-            node_type = get_type(parse_tree[i])
+-            if (node_type === "string") {
+-                output[output.length] = parse_tree[i]
+-            }
+-            else if (node_type === "array") {
+-                match = parse_tree[i] // convenience purposes only
+-                if (match[2]) { // keyword argument
+-                    arg = argv[cursor]
+-                    for (k = 0; k < match[2].length; k++) {
+-                        if (!arg.hasOwnProperty(match[2][k])) {
+-                            throw new Error(sprintf("[sprintf] property '%s' does not exist", match[2][k]))
+-                        }
+-                        arg = arg[match[2][k]]
+-                    }
+-                }
+-                else if (match[1]) { // positional argument (explicit)
+-                    arg = argv[match[1]]
+-                }
+-                else { // positional argument (implicit)
+-                    arg = argv[cursor++]
+-                }
++  return new SelectResult(
++     (dx + x0)|0,
++     (dy + y0)|0,
++     c0,
++     [c1, c2, c3],
++     Math.sqrt(closest[2]))
++}
+ 
+-                if (get_type(arg) == "function") {
+-                    arg = arg()
+-                }
++proto.dispose = function() {
++  if(!this.gl) {
++    return
++  }
++  this.fbo.dispose()
++  pool.free(this.buffer)
++  this.gl = null
++  if(this._readTimeout) {
++    clearTimeout(this._readTimeout)
++  }
++}
+ 
+-                if (re.not_string.test(match[8]) && re.not_json.test(match[8]) && (get_type(arg) != "number" && isNaN(arg))) {
+-                    throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg)))
+-                }
++function createSelectBuffer(gl, shape) {
++  var fbo = createFBO(gl, shape)
++  var buffer = pool.mallocUint8(shape[0]*shape[1]*4)
++  return new SelectBuffer(gl, fbo, buffer)
++}
+ 
+-                if (re.number.test(match[8])) {
+-                    is_positive = arg >= 0
+-                }
++},{"bit-twiddle":28,"cwise/lib/wrapper":53,"gl-fbo":71,"ndarray":123,"typedarray-pool":162}],96:[function(require,module,exports){
++'use strict'
+ 
+-                switch (match[8]) {
+-                    case "b":
+-                        arg = arg.toString(2)
+-                    break
+-                    case "c":
+-                        arg = String.fromCharCode(arg)
+-                    break
+-                    case "d":
+-                    case "i":
+-                        arg = parseInt(arg, 10)
+-                    break
+-                    case "j":
+-                        arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
+-                    break
+-                    case "e":
+-                        arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential()
+-                    break
+-                    case "f":
+-                        arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
+-                    break
+-                    case "g":
+-                        arg = match[7] ? parseFloat(arg).toPrecision(match[7]) : parseFloat(arg)
+-                    break
+-                    case "o":
+-                        arg = arg.toString(8)
+-                    break
+-                    case "s":
+-                        arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg)
+-                    break
+-                    case "u":
+-                        arg = arg >>> 0
+-                    break
+-                    case "x":
+-                        arg = arg.toString(16)
+-                    break
+-                    case "X":
+-                        arg = arg.toString(16).toUpperCase()
+-                    break
+-                }
+-                if (re.json.test(match[8])) {
+-                    output[output.length] = arg
+-                }
+-                else {
+-                    if (re.number.test(match[8]) && (!is_positive || match[3])) {
+-                        sign = is_positive ? "+" : "-"
+-                        arg = arg.toString().replace(re.sign, "")
+-                    }
+-                    else {
+-                        sign = ""
+-                    }
+-                    pad_character = match[4] ? match[4] === "0" ? "0" : match[4].charAt(1) : " "
+-                    pad_length = match[6] - (sign + arg).length
+-                    pad = match[6] ? (pad_length > 0 ? str_repeat(pad_character, pad_length) : "") : ""
+-                    output[output.length] = match[5] ? sign + arg + pad : (pad_character === "0" ? sign + pad + arg : pad + sign + arg)
+-                }
+-            }
+-        }
+-        return output.join("")
+-    }
++var createUniformWrapper   = require('./lib/create-uniforms')
++var createAttributeWrapper = require('./lib/create-attributes')
++var makeReflect            = require('./lib/reflect')
++var shaderCache            = require('./lib/shader-cache')
++var runtime                = require('./lib/runtime-reflect')
++var GLError                = require("./lib/GLError")
+ 
+-    sprintf.cache = {}
++//Shader object
++function Shader(gl) {
++  this.gl         = gl
++  this.gl.lastAttribCount = 0  // fixme where else should we store info, safe but not nice on the gl object
+ 
+-    sprintf.parse = function(fmt) {
+-        var _fmt = fmt, match = [], parse_tree = [], arg_names = 0
+-        while (_fmt) {
+-            if ((match = re.text.exec(_fmt)) !== null) {
+-                parse_tree[parse_tree.length] = match[0]
+-            }
+-            else if ((match = re.modulo.exec(_fmt)) !== null) {
+-                parse_tree[parse_tree.length] = "%"
+-            }
+-            else if ((match = re.placeholder.exec(_fmt)) !== null) {
+-                if (match[2]) {
+-                    arg_names |= 1
+-                    var field_list = [], replacement_field = match[2], field_match = []
+-                    if ((field_match = re.key.exec(replacement_field)) !== null) {
+-                        field_list[field_list.length] = field_match[1]
+-                        while ((replacement_field = replacement_field.substring(field_match[0].length)) !== "") {
+-                            if ((field_match = re.key_access.exec(replacement_field)) !== null) {
+-                                field_list[field_list.length] = field_match[1]
+-                            }
+-                            else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
+-                                field_list[field_list.length] = field_match[1]
+-                            }
+-                            else {
+-                                throw new SyntaxError("[sprintf] failed to parse named argument key")
+-                            }
+-                        }
+-                    }
+-                    else {
+-                        throw new SyntaxError("[sprintf] failed to parse named argument key")
+-                    }
+-                    match[2] = field_list
+-                }
+-                else {
+-                    arg_names |= 2
+-                }
+-                if (arg_names === 3) {
+-                    throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
+-                }
+-                parse_tree[parse_tree.length] = match
+-            }
+-            else {
+-                throw new SyntaxError("[sprintf] unexpected placeholder")
+-            }
+-            _fmt = _fmt.substring(match[0].length)
+-        }
+-        return parse_tree
+-    }
++  //Default initialize these to null
++  this._vref      =
++  this._fref      =
++  this._relink    =
++  this.vertShader =
++  this.fragShader =
++  this.program    =
++  this.attributes =
++  this.uniforms   =
++  this.types      = null
++}
+ 
+-    var vsprintf = function(fmt, argv, _argv) {
+-        _argv = (argv || []).slice(0)
+-        _argv.splice(0, 0, fmt)
+-        return sprintf.apply(null, _argv)
+-    }
++var proto = Shader.prototype
+ 
+-    /**
+-     * helpers
+-     */
+-    function get_type(variable) {
+-        return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase()
+-    }
++proto.bind = function() {
++  if(!this.program) {
++    this._relink()
++  }
+ 
+-    function str_repeat(input, multiplier) {
+-        return Array(multiplier + 1).join(input)
++  // ensuring that we have the right number of enabled vertex attributes
++  var i
++  var newAttribCount = this.gl.getProgramParameter(this.program, this.gl.ACTIVE_ATTRIBUTES) // more robust approach
++  //var newAttribCount = Object.keys(this.attributes).length // avoids the probably immaterial introspection slowdown
++  var oldAttribCount = this.gl.lastAttribCount
++  if(newAttribCount > oldAttribCount) {
++    for(i = oldAttribCount; i < newAttribCount; i++) {
++      this.gl.enableVertexAttribArray(i)
+     }
+-
+-    /**
+-     * export to either browser or node.js
+-     */
+-    if (typeof exports !== "undefined") {
+-        exports.sprintf = sprintf
+-        exports.vsprintf = vsprintf
++  } else if(oldAttribCount > newAttribCount) {
++    for(i = newAttribCount; i < oldAttribCount; i++) {
++      this.gl.disableVertexAttribArray(i)
+     }
+-    else {
+-        window.sprintf = sprintf
+-        window.vsprintf = vsprintf
++  }
+ 
+-        if (typeof define === "function" && define.amd) {
+-            define(function() {
+-                return {
+-                    sprintf: sprintf,
+-                    vsprintf: vsprintf
+-                }
+-            })
+-        }
+-    }
+-})(typeof window === "undefined" ? this : window);
++  this.gl.lastAttribCount = newAttribCount
+ 
+-},{}],111:[function(require,module,exports){
+-var hiddenStore = require('./hidden-store.js');
++  this.gl.useProgram(this.program)
++}
+ 
+-module.exports = createStore;
++proto.dispose = function() {
+ 
+-function createStore() {
+-    var key = {};
++  // disabling vertex attributes so new shader starts with zero
++  // and it's also useful if all shaders are disposed but the
++  // gl context is reused for subsequent replotting
++  var oldAttribCount = this.gl.lastAttribCount
++  for (var i = 0; i < oldAttribCount; i++) {
++    this.gl.disableVertexAttribArray(i)
++  }
++  this.gl.lastAttribCount = 0
+ 
+-    return function (obj) {
+-        if ((typeof obj !== 'object' || obj === null) &&
+-            typeof obj !== 'function'
+-        ) {
+-            throw new Error('Weakmap-shim: Key must be object')
+-        }
++  if(this._fref) {
++    this._fref.dispose()
++  }
++  if(this._vref) {
++    this._vref.dispose()
++  }
++  this.attributes =
++  this.types      =
++  this.vertShader =
++  this.fragShader =
++  this.program    =
++  this._relink    =
++  this._fref      =
++  this._vref      = null
++}
+ 
+-        var store = obj.valueOf(key);
+-        return store && store.identity === key ?
+-            store : hiddenStore(obj, key);
+-    };
++function compareAttributes(a, b) {
++  if(a.name < b.name) {
++    return -1
++  }
++  return 1
+ }
+ 
+-},{"./hidden-store.js":112}],112:[function(require,module,exports){
+-module.exports = hiddenStore;
++//Update export hook for glslify-live
++proto.update = function(
++    vertSource
++  , fragSource
++  , uniforms
++  , attributes) {
+ 
+-function hiddenStore(obj, key) {
+-    var store = { identity: key };
+-    var valueOf = obj.valueOf;
++  //If only one object passed, assume glslify style output
++  if(!fragSource || arguments.length === 1) {
++    var obj = vertSource
++    vertSource = obj.vertex
++    fragSource = obj.fragment
++    uniforms   = obj.uniforms
++    attributes = obj.attributes
++  }
+ 
+-    Object.defineProperty(obj, "valueOf", {
+-        value: function (value) {
+-            return value !== key ?
+-                valueOf.apply(this, arguments) : store;
+-        },
+-        writable: true
+-    });
++  var wrapper = this
++  var gl      = wrapper.gl
+ 
+-    return store;
+-}
++  //Compile vertex and fragment shaders
++  var pvref = wrapper._vref
++  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
++  if(pvref) {
++    pvref.dispose()
++  }
++  wrapper.vertShader = wrapper._vref.shader
++  var pfref = this._fref
++  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
++  if(pfref) {
++    pfref.dispose()
++  }
++  wrapper.fragShader = wrapper._fref.shader
+ 
+-},{}],113:[function(require,module,exports){
+-// Original - @Gozola. 
+-// https://gist.github.com/Gozala/1269991
+-// This is a reimplemented version (with a few bug fixes).
++  //If uniforms/attributes is not specified, use RT reflection
++  if(!uniforms || !attributes) {
+ 
+-var createStore = require('./create-store.js');
++    //Create initial test program
++    var testProgram = gl.createProgram()
++    gl.attachShader(testProgram, wrapper.fragShader)
++    gl.attachShader(testProgram, wrapper.vertShader)
++    gl.linkProgram(testProgram)
++    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
++      var errLog = gl.getProgramInfoLog(testProgram)
++      throw new GLError(errLog, 'Error linking program:' + errLog)
++    }
+ 
+-module.exports = weakMap;
++    //Load data from runtime
++    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
++    attributes = attributes || runtime.attributes(gl, testProgram)
+ 
+-function weakMap() {
+-    var privates = createStore();
++    //Release test program
++    gl.deleteProgram(testProgram)
++  }
+ 
+-    return {
+-        'get': function (key, fallback) {
+-            var store = privates(key)
+-            return store.hasOwnProperty('value') ?
+-                store.value : fallback
+-        },
+-        'set': function (key, value) {
+-            privates(key).value = value;
+-        },
+-        'has': function(key) {
+-            return 'value' in privates(key);
+-        },
+-        'delete': function (key) {
+-            return delete privates(key).value;
++  //Sort attributes lexicographically
++  // overrides undefined WebGL behavior for attribute locations
++  attributes = attributes.slice()
++  attributes.sort(compareAttributes)
++
++  //Convert attribute types, read out locations
++  var attributeUnpacked  = []
++  var attributeNames     = []
++  var attributeLocations = []
++  var i
++  for(i=0; i<attributes.length; ++i) {
++    var attr = attributes[i]
++    if(attr.type.indexOf('mat') >= 0) {
++      var size = attr.type.charAt(attr.type.length-1)|0
++      var locVector = new Array(size)
++      for(var j=0; j<size; ++j) {
++        locVector[j] = attributeLocations.length
++        attributeNames.push(attr.name + '[' + j + ']')
++        if(typeof attr.location === 'number') {
++          attributeLocations.push(attr.location + j)
++        } else if(Array.isArray(attr.location) &&
++                  attr.location.length === size &&
++                  typeof attr.location[j] === 'number') {
++          attributeLocations.push(attr.location[j]|0)
++        } else {
++          attributeLocations.push(-1)
+         }
++      }
++      attributeUnpacked.push({
++        name: attr.name,
++        type: attr.type,
++        locations: locVector
++      })
++    } else {
++      attributeUnpacked.push({
++        name: attr.name,
++        type: attr.type,
++        locations: [ attributeLocations.length ]
++      })
++      attributeNames.push(attr.name)
++      if(typeof attr.location === 'number') {
++        attributeLocations.push(attr.location|0)
++      } else {
++        attributeLocations.push(-1)
++      }
+     }
+-}
++  }
+ 
+-},{"./create-store.js":111}],114:[function(require,module,exports){
+-'use strict'
++  //For all unspecified attributes, assign them lexicographically min attribute
++  var curLocation = 0
++  for(i=0; i<attributeLocations.length; ++i) {
++    if(attributeLocations[i] < 0) {
++      while(attributeLocations.indexOf(curLocation) >= 0) {
++        curLocation += 1
++      }
++      attributeLocations[i] = curLocation
++    }
++  }
+ 
+-module.exports = createSpikes2D
++  //Rebuild program and recompute all uniform locations
++  var uniformLocations = new Array(uniforms.length)
++  function relink() {
++    wrapper.program = shaderCache.program(
++        gl
++      , wrapper._vref
++      , wrapper._fref
++      , attributeNames
++      , attributeLocations)
+ 
+-function GLSpikes2D(plot) {
+-  this.plot = plot
+-  this.enable = [true, true, false, false]
+-  this.width  = [1, 1, 1, 1]
+-  this.color  = [[0,0,0,1],
+-                 [0,0,0,1],
+-                 [0,0,0,1],
+-                 [0,0,0,1]]
+-  this.center = [Infinity, Infinity]
+-}
++    for(var i=0; i<uniforms.length; ++i) {
++      uniformLocations[i] = gl.getUniformLocation(
++          wrapper.program
++        , uniforms[i].name)
++    }
++  }
+ 
+-var proto = GLSpikes2D.prototype
++  //Perform initial linking, reuse program used for reflection
++  relink()
+ 
+-proto.update = function(options) {
+-  options = options || {}
+-  this.enable = (options.enable || [true,true,false,false]).slice()
+-  this.width  = (options.width || [1,1,1,1]).slice()
+-  this.color  = (options.color || [
+-                  [0,0,0,1],
+-                  [0,0,0,1],
+-                  [0,0,0,1],
+-                  [0,0,0,1]]).map(function(x) { return x.slice() })
+-  this.center = (options.center || [Infinity,Infinity]).slice()
+-  this.plot.setOverlayDirty()
+-}
++  //Save relinking procedure, defer until runtime
++  wrapper._relink = relink
+ 
+-proto.draw = function() {
+-  var spikeEnable = this.enable
+-  var spikeWidth  = this.width
+-  var spikeColor  = this.color
+-  var spikeCenter = this.center
+-  var plot        = this.plot
+-  var line        = plot.line
++  //Generate type info
++  wrapper.types = {
++    uniforms:   makeReflect(uniforms),
++    attributes: makeReflect(attributes)
++  }
+ 
+-  var dataBox     = plot.dataBox
+-  var viewPixels  = plot.viewBox
++  //Generate attribute wrappers
++  wrapper.attributes = createAttributeWrapper(
++      gl
++    , wrapper
++    , attributeUnpacked
++    , attributeLocations)
+ 
+-  line.bind()
++  //Generate uniform wrappers
++  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
++      gl
++    , wrapper
++    , uniforms
++    , uniformLocations))
++}
+ 
+-  if(dataBox[0] <= spikeCenter[0] && spikeCenter[0] <= dataBox[2] &&
+-     dataBox[1] <= spikeCenter[1] && spikeCenter[1] <= dataBox[3]) {
++//Compiles and links a shader program with the given attribute and vertex list
++function createShader(
++    gl
++  , vertSource
++  , fragSource
++  , uniforms
++  , attributes) {
+ 
+-    var centerX = viewPixels[0] + (spikeCenter[0] - dataBox[0]) / (dataBox[2] - dataBox[0]) * (viewPixels[2] - viewPixels[0])
+-    var centerY = viewPixels[1] + (spikeCenter[1] - dataBox[1]) / (dataBox[3] - dataBox[1]) * (viewPixels[3] - viewPixels[1])
++  var shader = new Shader(gl)
+ 
+-    if(spikeEnable[0]) {
+-     line.drawLine(
+-       centerX, centerY,
+-       viewPixels[0], centerY,
+-       spikeWidth[0], spikeColor[0])
+-    }
+-    if(spikeEnable[1]) {
+-     line.drawLine(
+-       centerX, centerY,
+-       centerX, viewPixels[1],
+-       spikeWidth[1], spikeColor[1])
+-    }
+-    if(spikeEnable[2]) {
+-      line.drawLine(
+-        centerX, centerY,
+-        viewPixels[2], centerY,
+-        spikeWidth[2], spikeColor[2])
+-    }
+-    if(spikeEnable[3]) {
+-      line.drawLine(
+-        centerX, centerY,
+-        centerX, viewPixels[3],
+-        spikeWidth[3], spikeColor[3])
+-    }
+-  }
+-}
++  shader.update(
++      vertSource
++    , fragSource
++    , uniforms
++    , attributes)
+ 
+-proto.dispose = function() {
+-  this.plot.removeOverlay(this)
++  return shader
+ }
+ 
+-function createSpikes2D(plot, options) {
+-  var spikes = new GLSpikes2D(plot)
+-  spikes.update(options)
+-  plot.addOverlay(spikes)
+-  return spikes
++module.exports = createShader
++
++},{"./lib/GLError":97,"./lib/create-attributes":98,"./lib/create-uniforms":99,"./lib/reflect":100,"./lib/runtime-reflect":101,"./lib/shader-cache":102}],97:[function(require,module,exports){
++function GLError (rawError, shortMessage, longMessage) {
++    this.shortMessage = shortMessage || ''
++    this.longMessage = longMessage || ''
++    this.rawError = rawError || ''
++    this.message =
++      'gl-shader: ' + (shortMessage || rawError || '') +
++      (longMessage ? '\n'+longMessage : '')
++    this.stack = (new Error()).stack
+ }
++GLError.prototype = new Error
++GLError.prototype.name = 'GLError'
++GLError.prototype.constructor = GLError
++module.exports = GLError
+ 
+-},{}],115:[function(require,module,exports){
++},{}],98:[function(require,module,exports){
+ 'use strict'
+ 
+-var ndarray = require('ndarray')
+-var ops     = require('ndarray-ops')
+-var pool    = require('typedarray-pool')
++module.exports = createAttributeWrapper
+ 
+-module.exports = createTexture2D
++var GLError = require("./GLError")
+ 
+-var linearTypes = null
+-var filterTypes = null
+-var wrapTypes   = null
++function ShaderAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , constFunc) {
++  this._gl        = gl
++  this._wrapper   = wrapper
++  this._index     = index
++  this._locations = locations
++  this._dimension = dimension
++  this._constFunc = constFunc
++}
+ 
+-function lazyInitLinearTypes(gl) {
+-  linearTypes = [
+-    gl.LINEAR,
+-    gl.NEAREST_MIPMAP_LINEAR,
+-    gl.LINEAR_MIPMAP_NEAREST,
+-    gl.LINEAR_MIPMAP_NEAREST
+-  ]
+-  filterTypes = [
+-    gl.NEAREST,
+-    gl.LINEAR,
+-    gl.NEAREST_MIPMAP_NEAREST,
+-    gl.NEAREST_MIPMAP_LINEAR,
+-    gl.LINEAR_MIPMAP_NEAREST,
+-    gl.LINEAR_MIPMAP_LINEAR
+-  ]
+-  wrapTypes = [
+-    gl.REPEAT,
+-    gl.CLAMP_TO_EDGE,
+-    gl.MIRRORED_REPEAT
+-  ]
++var proto = ShaderAttribute.prototype
++
++proto.pointer = function setAttribPointer(
++    type
++  , normalized
++  , stride
++  , offset) {
++
++  var self      = this
++  var gl        = self._gl
++  var location  = self._locations[self._index]
++
++  gl.vertexAttribPointer(
++      location
++    , self._dimension
++    , type || gl.FLOAT
++    , !!normalized
++    , stride || 0
++    , offset || 0)
++  gl.enableVertexAttribArray(location)
+ }
+ 
+-var convertFloatToUint8 = function(out, inp) {
+-  ops.muls(out, inp, 255.0)
++proto.set = function(x0, x1, x2, x3) {
++  return this._constFunc(this._locations[this._index], x0, x1, x2, x3)
+ }
+ 
+-function reshapeTexture(tex, w, h) {
+-  var gl = tex.gl
+-  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(w < 0 || w > maxSize || h < 0 || h > maxSize) {
+-    throw new Error('gl-texture2d: Invalid texture size')
++Object.defineProperty(proto, 'location', {
++  get: function() {
++    return this._locations[this._index]
+   }
+-  tex._shape = [w, h]
+-  tex.bind()
+-  gl.texImage2D(gl.TEXTURE_2D, 0, tex.format, w, h, 0, tex.format, tex.type, null)
+-  tex._mipLevels = [0]
+-  return tex
+-}
++  , set: function(v) {
++    if(v !== this._locations[this._index]) {
++      this._locations[this._index] = v|0
++      this._wrapper.program = null
++    }
++    return v|0
++  }
++})
+ 
+-function Texture2D(gl, handle, width, height, format, type) {
+-  this.gl = gl
+-  this.handle = handle
+-  this.format = format
+-  this.type = type
+-  this._shape = [width, height]
+-  this._mipLevels = [0]
+-  this._magFilter = gl.NEAREST
+-  this._minFilter = gl.NEAREST
+-  this._wrapS = gl.CLAMP_TO_EDGE
+-  this._wrapT = gl.CLAMP_TO_EDGE
+-  this._anisoSamples = 1
++//Adds a vector attribute to obj
++function addVectorAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , obj
++  , name) {
+ 
+-  var parent = this
+-  var wrapVector = [this._wrapS, this._wrapT]
+-  Object.defineProperties(wrapVector, [
+-    {
+-      get: function() {
+-        return parent._wrapS
+-      },
+-      set: function(v) {
+-        return parent.wrapS = v
+-      }
+-    },
+-    {
+-      get: function() {
+-        return parent._wrapT
+-      },
+-      set: function(v) {
+-        return parent.wrapT = v
+-      }
+-    }
+-  ])
+-  this._wrapVector = wrapVector
++  //Construct constant function
++  var constFuncArgs = [ 'gl', 'v' ]
++  var varNames = []
++  for(var i=0; i<dimension; ++i) {
++    constFuncArgs.push('x'+i)
++    varNames.push('x'+i)
++  }
++  constFuncArgs.push(
++    'if(x0.length===void 0){return gl.vertexAttrib' +
++    dimension + 'f(v,' +
++    varNames.join() +
++    ')}else{return gl.vertexAttrib' +
++    dimension +
++    'fv(v,x0)}')
++  var constFunc = Function.apply(null, constFuncArgs)
+ 
+-  var shapeVector = [this._shape[0], this._shape[1]]
+-  Object.defineProperties(shapeVector, [
+-    {
+-      get: function() {
+-        return parent._shape[0]
+-      },
+-      set: function(v) {
+-        return parent.width = v
+-      }
+-    },
+-    {
+-      get: function() {
+-        return parent._shape[1]
+-      },
+-      set: function(v) {
+-        return parent.height = v
+-      }
++  //Create attribute wrapper
++  var attr = new ShaderAttribute(
++      gl
++    , wrapper
++    , index
++    , locations
++    , dimension
++    , constFunc)
++
++  //Create accessor
++  Object.defineProperty(obj, name, {
++    set: function(x) {
++      gl.disableVertexAttribArray(locations[index])
++      constFunc(gl, locations[index], x)
++      return x
+     }
+-  ])
+-  this._shapeVector = shapeVector
++    , get: function() {
++      return attr
++    }
++    , enumerable: true
++  })
+ }
+ 
+-var proto = Texture2D.prototype
++function addMatrixAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , obj
++  , name) {
+ 
+-Object.defineProperties(proto, {
+-  minFilter: {
+-    get: function() {
+-      return this._minFilter
+-    },
+-    set: function(v) {
+-      this.bind()
+-      var gl = this.gl
+-      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
+-        if(!gl.getExtension('OES_texture_float_linear')) {
+-          v = gl.NEAREST
+-        }
+-      }
+-      if(filterTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown filter mode ' + v)
+-      }
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, v)
+-      return this._minFilter = v
+-    }
+-  },
+-  magFilter: {
+-    get: function() {
+-      return this._magFilter
+-    },
++  var parts = new Array(dimension)
++  var attrs = new Array(dimension)
++  for(var i=0; i<dimension; ++i) {
++    addVectorAttribute(
++        gl
++      , wrapper
++      , index[i]
++      , locations
++      , dimension
++      , parts
++      , i)
++    attrs[i] = parts[i]
++  }
++
++  Object.defineProperty(parts, 'location', {
+     set: function(v) {
+-      this.bind()
+-      var gl = this.gl
+-      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
+-        if(!gl.getExtension('OES_texture_float_linear')) {
+-          v = gl.NEAREST
++      if(Array.isArray(v)) {
++        for(var i=0; i<dimension; ++i) {
++          attrs[i].location = v[i]
+         }
+-      }
+-      if(filterTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown filter mode ' + v)
+-      }
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, v)
+-      return this._magFilter = v
+-    }
+-  },
+-  mipSamples: {
+-    get: function() {
+-      return this._anisoSamples
+-    },
+-    set: function(i) {
+-      var psamples = this._anisoSamples
+-      this._anisoSamples = Math.max(i, 1)|0
+-      if(psamples !== this._anisoSamples) {
+-        var ext = gl.getExtension('EXT_texture_filter_anisotropic')
+-        if(ext) {
+-          this.gl.texParameterf(this.gl.TEXTURE_2D, ext.TEXTURE_MAX_ANISOTROPY_EXT, this._anisoSamples)
++      } else {
++        for(var i=0; i<dimension; ++i) {
++          attrs[i].location = v + i
+         }
+       }
+-      return this._anisoSamples
++      return v
+     }
+-  },
+-  wrapS: {
+-    get: function() {
+-      return this._wrapS
+-    },
+-    set: function(v) {
+-      this.bind()
+-      if(wrapTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++    , get: function() {
++      var result = new Array(dimension)
++      for(var i=0; i<dimension; ++i) {
++        result[i] = locations[index[i]]
+       }
+-      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_S, v)
+-      return this._wrapS = v
++      return result
+     }
+-  },
+-  wrapT: {
+-    get: function() {
+-      return this._wrapT
+-    },
+-    set: function(v) {
+-      this.bind()
+-      if(wrapTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
+-      }
+-      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_T, v)
+-      return this._wrapT = v
++    , enumerable: true
++  })
++
++  parts.pointer = function(type, normalized, stride, offset) {
++    type       = type || gl.FLOAT
++    normalized = !!normalized
++    stride     = stride || (dimension * dimension)
++    offset     = offset || 0
++    for(var i=0; i<dimension; ++i) {
++      var location = locations[index[i]]
++      gl.vertexAttribPointer(
++            location
++          , dimension
++          , type
++          , normalized
++          , stride
++          , offset + i * dimension)
++      gl.enableVertexAttribArray(location)
+     }
+-  },
+-  wrap: {
+-    get: function() {
+-      return this._wrapVector
+-    },
+-    set: function(v) {
+-      if(!Array.isArray(v)) {
+-        v = [v,v]
+-      }
+-      if(v.length !== 2) {
+-        throw new Error('gl-texture2d: Must specify wrap mode for rows and columns')
+-      }
+-      for(var i=0; i<2; ++i) {
+-        if(wrapTypes.indexOf(v[i]) < 0) {
+-          throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++  }
++
++  var scratch = new Array(dimension)
++  var vertexAttrib = gl['vertexAttrib' + dimension + 'fv']
++
++  Object.defineProperty(obj, name, {
++    set: function(x) {
++      for(var i=0; i<dimension; ++i) {
++        var loc = locations[index[i]]
++        gl.disableVertexAttribArray(loc)
++        if(Array.isArray(x[0])) {
++          vertexAttrib.call(gl, loc, x[i])
++        } else {
++          for(var j=0; j<dimension; ++j) {
++            scratch[j] = x[dimension*i + j]
++          }
++          vertexAttrib.call(gl, loc, scratch)
+         }
+       }
+-      this._wrapS = v[0]
+-      this._wrapT = v[1]
++      return x
++    }
++    , get: function() {
++      return parts
++    }
++    , enumerable: true
++  })
++}
+ 
+-      var gl = this.gl
+-      this.bind()
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, this._wrapS)
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, this._wrapT)
++//Create shims for attributes
++function createAttributeWrapper(
++    gl
++  , wrapper
++  , attributes
++  , locations) {
+ 
+-      return v
+-    }
+-  },
+-  shape: {
+-    get: function() {
+-      return this._shapeVector
+-    },
+-    set: function(x) {
+-      if(!Array.isArray(x)) {
+-        x = [x|0,x|0]
+-      } else {
+-        if(x.length !== 2) {
+-          throw new Error('gl-texture2d: Invalid texture shape')
++  var obj = {}
++  for(var i=0, n=attributes.length; i<n; ++i) {
++
++    var a = attributes[i]
++    var name = a.name
++    var type = a.type
++    var locs = a.locations
++
++    switch(type) {
++      case 'bool':
++      case 'int':
++      case 'float':
++        addVectorAttribute(
++            gl
++          , wrapper
++          , locs[0]
++          , locations
++          , 1
++          , obj
++          , name)
++      break
++
++      default:
++        if(type.indexOf('vec') >= 0) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
++          }
++          addVectorAttribute(
++              gl
++            , wrapper
++            , locs[0]
++            , locations
++            , d
++            , obj
++            , name)
++        } else if(type.indexOf('mat') >= 0) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
++          }
++          addMatrixAttribute(
++              gl
++            , wrapper
++            , locs
++            , locations
++            , d
++            , obj
++            , name)
++        } else {
++          throw new GLError('', 'Unknown data type for attribute ' + name + ': ' + type)
+         }
+-      }
+-      reshapeTexture(this, x[0]|0, x[1]|0)
+-      return [x[0]|0, x[1]|0]
+-    }
+-  },
+-  width: {
+-    get: function() {
+-      return this._shape[0]
+-    },
+-    set: function(w) {
+-      w = w|0
+-      reshapeTexture(this, w, this._shape[1])
+-      return w
+-    }
+-  },
+-  height: {
+-    get: function() {
+-      return this._shape[1]
+-    },
+-    set: function(h) {
+-      h = h|0
+-      reshapeTexture(this, this._shape[0], h)
+-      return h
++      break
+     }
+   }
+-})
+-
+-proto.bind = function(unit) {
+-  var gl = this.gl
+-  if(unit !== undefined) {
+-    gl.activeTexture(gl.TEXTURE0 + (unit|0))
+-  }
+-  gl.bindTexture(gl.TEXTURE_2D, this.handle)
+-  if(unit !== undefined) {
+-    return (unit|0)
+-  }
+-  return gl.getParameter(gl.ACTIVE_TEXTURE) - gl.TEXTURE0
++  return obj
+ }
+ 
+-proto.dispose = function() {
+-  this.gl.deleteTexture(this.handle)
+-}
++},{"./GLError":97}],99:[function(require,module,exports){
++'use strict'
+ 
+-proto.generateMipmap = function() {
+-  this.bind()
+-  this.gl.generateMipmap(this.gl.TEXTURE_2D)
++var coallesceUniforms = require('./reflect')
++var GLError = require("./GLError")
+ 
+-  //Update mip levels
+-  var l = Math.min(this._shape[0], this._shape[1])
+-  for(var i=0; l>0; ++i, l>>>=1) {
+-    if(this._mipLevels.indexOf(i) < 0) {
+-      this._mipLevels.push(i)
+-    }
+-  }
++module.exports = createUniformWrapper
++
++//Binds a function and returns a value
++function identity(x) {
++  var c = new Function('y', 'return function(){return y}')
++  return c(x)
+ }
+ 
+-proto.setPixels = function(data, x_off, y_off, mip_level) {
+-  var gl = this.gl
+-  this.bind()
+-  if(Array.isArray(x_off)) {
+-    mip_level = y_off
+-    y_off = x_off[1]|0
+-    x_off = x_off[0]|0
+-  } else {
+-    x_off = x_off || 0
+-    y_off = y_off || 0
+-  }
+-  mip_level = mip_level || 0
+-  if(data instanceof HTMLCanvasElement ||
+-     data instanceof ImageData ||
+-     data instanceof HTMLImageElement ||
+-     data instanceof HTMLVideoElement) {
+-    var needsMip = this._mipLevels.indexOf(mip_level) < 0
+-    if(needsMip) {
+-      gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, this.type, data)
+-      this._mipLevels.push(mip_level)
+-    } else {
+-      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, this.format, this.type, data)
+-    }
+-  } else if(data.shape && data.stride && data.data) {
+-    if(data.shape.length < 2 ||
+-       x_off + data.shape[1] > this._shape[1]>>>mip_level ||
+-       y_off + data.shape[0] > this._shape[0]>>>mip_level ||
+-       x_off < 0 ||
+-       y_off < 0) {
+-      throw new Error('gl-texture2d: Texture dimensions are out of bounds')
+-    }
+-    texSubImageArray(gl, x_off, y_off, mip_level, this.format, this.type, this._mipLevels, data)
+-  } else {
+-    throw new Error('gl-texture2d: Unsupported data type')
++function makeVector(length, fill) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = fill
+   }
++  return result
+ }
+ 
++//Create shims for uniforms
++function createUniformWrapper(gl, wrapper, uniforms, locations) {
+ 
+-function isPacked(shape, stride) {
+-  if(shape.length === 3) {
+-    return  (stride[2] === 1) &&
+-            (stride[1] === shape[0]*shape[2]) &&
+-            (stride[0] === shape[2])
++  function makeGetter(index) {
++    var proc = new Function(
++        'gl'
++      , 'wrapper'
++      , 'locations'
++      , 'return function(){return gl.getUniform(wrapper.program,locations[' + index + '])}')
++    return proc(gl, wrapper, locations)
+   }
+-  return  (stride[0] === 1) &&
+-          (stride[1] === shape[0])
+-}
+ 
+-function texSubImageArray(gl, x_off, y_off, mip_level, cformat, ctype, mipLevels, array) {
+-  var dtype = array.dtype
+-  var shape = array.shape.slice()
+-  if(shape.length < 2 || shape.length > 3) {
+-    throw new Error('gl-texture2d: Invalid ndarray, must be 2d or 3d')
+-  }
+-  var type = 0, format = 0
+-  var packed = isPacked(shape, array.stride.slice())
+-  if(dtype === 'float32') {
+-    type = gl.FLOAT
+-  } else if(dtype === 'float64') {
+-    type = gl.FLOAT
+-    packed = false
+-    dtype = 'float32'
+-  } else if(dtype === 'uint8') {
+-    type = gl.UNSIGNED_BYTE
+-  } else {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
+-    dtype = 'uint8'
+-  }
+-  var channels = 1
+-  if(shape.length === 2) {
+-    format = gl.LUMINANCE
+-    shape = [shape[0], shape[1], 1]
+-    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
+-  } else if(shape.length === 3) {
+-    if(shape[2] === 1) {
+-      format = gl.ALPHA
+-    } else if(shape[2] === 2) {
+-      format = gl.LUMINANCE_ALPHA
+-    } else if(shape[2] === 3) {
+-      format = gl.RGB
+-    } else if(shape[2] === 4) {
+-      format = gl.RGBA
+-    } else {
+-      throw new Error('gl-texture2d: Invalid shape for pixel coords')
++  function makePropSetter(path, index, type) {
++    switch(type) {
++      case 'bool':
++      case 'int':
++      case 'sampler2D':
++      case 'samplerCube':
++        return 'gl.uniform1i(locations[' + index + '],obj' + path + ')'
++      case 'float':
++        return 'gl.uniform1f(locations[' + index + '],obj' + path + ')'
++      default:
++        var vidx = type.indexOf('vec')
++        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type')
++          }
++          switch(type.charAt(0)) {
++            case 'b':
++            case 'i':
++              return 'gl.uniform' + d + 'iv(locations[' + index + '],obj' + path + ')'
++            case 'v':
++              return 'gl.uniform' + d + 'fv(locations[' + index + '],obj' + path + ')'
++            default:
++              throw new GLError('', 'Unrecognized data type for vector ' + name + ': ' + type)
++          }
++        } else if(type.indexOf('mat') === 0 && type.length === 4) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
++          }
++          return 'gl.uniformMatrix' + d + 'fv(locations[' + index + '],false,obj' + path + ')'
++        } else {
++          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
++        }
++      break
+     }
+-    channels = shape[2]
+-  } else {
+-    throw new Error('gl-texture2d: Invalid shape for texture')
+-  }
+-  //For 1-channel textures allow conversion between formats
+-  if((format  === gl.LUMINANCE || format  === gl.ALPHA) &&
+-     (cformat === gl.LUMINANCE || cformat === gl.ALPHA)) {
+-    format = cformat
+-  }
+-  if(format !== cformat) {
+-    throw new Error('gl-texture2d: Incompatible texture format for setPixels')
+-  }
+-  var size = array.size
+-  var needsMip = mipLevels.indexOf(mip_level) < 0
+-  if(needsMip) {
+-    mipLevels.push(mip_level)
+   }
+-  if(type === ctype && packed) {
+-    //Array data types are compatible, can directly copy into texture
+-    if(array.offset === 0 && array.data.length === size) {
+-      if(needsMip) {
+-        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data)
++
++  function enumerateIndices(prefix, type) {
++    if(typeof type !== 'object') {
++      return [ [prefix, type] ]
++    }
++    var indices = []
++    for(var id in type) {
++      var prop = type[id]
++      var tprefix = prefix
++      if(parseInt(id) + '' === id) {
++        tprefix += '[' + id + ']'
+       } else {
+-        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data)
++        tprefix += '.' + id
+       }
+-    } else {
+-      if(needsMip) {
+-        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data.subarray(array.offset, array.offset+size))
++      if(typeof prop === 'object') {
++        indices.push.apply(indices, enumerateIndices(tprefix, prop))
+       } else {
+-        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data.subarray(array.offset, array.offset+size))
++        indices.push([tprefix, prop])
+       }
+     }
+-  } else {
+-    //Need to do type conversion to pack data into buffer
+-    var pack_buffer
+-    if(ctype === gl.FLOAT) {
+-      pack_buffer = pool.mallocFloat32(size)
+-    } else {
+-      pack_buffer = pool.mallocUint8(size)
++    return indices
++  }
++
++  function makeSetter(type) {
++    var code = [ 'return function updateProperty(obj){' ]
++    var indices = enumerateIndices('', type)
++    for(var i=0; i<indices.length; ++i) {
++      var item = indices[i]
++      var path = item[0]
++      var idx  = item[1]
++      if(locations[idx]) {
++        code.push(makePropSetter(path, idx, uniforms[idx].type))
++      }
+     }
+-    var pack_view = ndarray(pack_buffer, shape, [shape[2], shape[2]*shape[0], 1])
+-    if(type === gl.FLOAT && ctype === gl.UNSIGNED_BYTE) {
+-      convertFloatToUint8(pack_view, array)
+-    } else {
+-      ops.assign(pack_view, array)
++    code.push('return obj}')
++    var proc = new Function('gl', 'locations', code.join('\n'))
++    return proc(gl, locations)
++  }
++
++  function defaultValue(type) {
++    switch(type) {
++      case 'bool':
++        return false
++      case 'int':
++      case 'sampler2D':
++      case 'samplerCube':
++        return 0
++      case 'float':
++        return 0.0
++      default:
++        var vidx = type.indexOf('vec')
++        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type')
++          }
++          if(type.charAt(0) === 'b') {
++            return makeVector(d, false)
++          }
++          return makeVector(d, 0)
++        } else if(type.indexOf('mat') === 0 && type.length === 4) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
++          }
++          return makeVector(d*d, 0)
++        } else {
++          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
++        }
++      break
+     }
+-    if(needsMip) {
+-      gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, pack_buffer.subarray(0, size))
++  }
++
++  function storeProperty(obj, prop, type) {
++    if(typeof type === 'object') {
++      var child = processObject(type)
++      Object.defineProperty(obj, prop, {
++        get: identity(child),
++        set: makeSetter(type),
++        enumerable: true,
++        configurable: false
++      })
+     } else {
+-      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, pack_buffer.subarray(0, size))
++      if(locations[type]) {
++        Object.defineProperty(obj, prop, {
++          get: makeGetter(type),
++          set: makeSetter(type),
++          enumerable: true,
++          configurable: false
++        })
++      } else {
++        obj[prop] = defaultValue(uniforms[type].type)
++      }
+     }
+-    if(ctype === gl.FLOAT) {
+-      pool.freeFloat32(pack_buffer)
++  }
++
++  function processObject(obj) {
++    var result
++    if(Array.isArray(obj)) {
++      result = new Array(obj.length)
++      for(var i=0; i<obj.length; ++i) {
++        storeProperty(result, i, obj[i])
++      }
+     } else {
+-      pool.freeUint8(pack_buffer)
++      result = {}
++      for(var id in obj) {
++        storeProperty(result, id, obj[id])
++      }
+     }
++    return result
+   }
+-}
+ 
+-function initTexture(gl) {
+-  var tex = gl.createTexture()
+-  gl.bindTexture(gl.TEXTURE_2D, tex)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
+-  return tex
++  //Return data
++  var coallesced = coallesceUniforms(uniforms, true)
++  return {
++    get: identity(processObject(coallesced)),
++    set: makeSetter(coallesced),
++    enumerable: true,
++    configurable: true
++  }
+ }
+ 
+-function createTextureShape(gl, width, height, format, type) {
+-  var maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(width < 0 || width > maxTextureSize || height < 0 || height  > maxTextureSize) {
+-    throw new Error('gl-texture2d: Invalid texture shape')
+-  }
+-  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
+-    throw new Error('gl-texture2d: Floating point textures not supported on this platform')
++},{"./GLError":97,"./reflect":100}],100:[function(require,module,exports){
++'use strict'
++
++module.exports = makeReflectTypes
++
++//Construct type info for reflection.
++//
++// This iterates over the flattened list of uniform type values and smashes them into a JSON object.
++//
++// The leaves of the resulting object are either indices or type strings representing primitive glslify types
++function makeReflectTypes(uniforms, useIndex) {
++  var obj = {}
++  for(var i=0; i<uniforms.length; ++i) {
++    var n = uniforms[i].name
++    var parts = n.split(".")
++    var o = obj
++    for(var j=0; j<parts.length; ++j) {
++      var x = parts[j].split("[")
++      if(x.length > 1) {
++        if(!(x[0] in o)) {
++          o[x[0]] = []
++        }
++        o = o[x[0]]
++        for(var k=1; k<x.length; ++k) {
++          var y = parseInt(x[k])
++          if(k<x.length-1 || j<parts.length-1) {
++            if(!(y in o)) {
++              if(k < x.length-1) {
++                o[y] = []
++              } else {
++                o[y] = {}
++              }
++            }
++            o = o[y]
++          } else {
++            if(useIndex) {
++              o[y] = i
++            } else {
++              o[y] = uniforms[i].type
++            }
++          }
++        }
++      } else if(j < parts.length-1) {
++        if(!(x[0] in o)) {
++          o[x[0]] = {}
++        }
++        o = o[x[0]]
++      } else {
++        if(useIndex) {
++          o[x[0]] = i
++        } else {
++          o[x[0]] = uniforms[i].type
++        }
++      }
++    }
+   }
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, format, type, null)
+-  return new Texture2D(gl, tex, width, height, format, type)
++  return obj
+ }
++},{}],101:[function(require,module,exports){
++'use strict'
+ 
+-function createTextureDOM(gl, element, format, type) {
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, format, type, element)
+-  return new Texture2D(gl, tex, element.width|0, element.height|0, format, type)
++exports.uniforms    = runtimeUniforms
++exports.attributes  = runtimeAttributes
++
++var GL_TO_GLSL_TYPES = {
++  'FLOAT':       'float',
++  'FLOAT_VEC2':  'vec2',
++  'FLOAT_VEC3':  'vec3',
++  'FLOAT_VEC4':  'vec4',
++  'INT':         'int',
++  'INT_VEC2':    'ivec2',
++  'INT_VEC3':    'ivec3',
++  'INT_VEC4':    'ivec4',
++  'BOOL':        'bool',
++  'BOOL_VEC2':   'bvec2',
++  'BOOL_VEC3':   'bvec3',
++  'BOOL_VEC4':   'bvec4',
++  'FLOAT_MAT2':  'mat2',
++  'FLOAT_MAT3':  'mat3',
++  'FLOAT_MAT4':  'mat4',
++  'SAMPLER_2D':  'sampler2D',
++  'SAMPLER_CUBE':'samplerCube'
+ }
+ 
+-//Creates a texture from an ndarray
+-function createTextureArray(gl, array) {
+-  var dtype = array.dtype
+-  var shape = array.shape.slice()
+-  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(shape[0] < 0 || shape[0] > maxSize || shape[1] < 0 || shape[1] > maxSize) {
+-    throw new Error('gl-texture2d: Invalid texture size')
+-  }
+-  var packed = isPacked(shape, array.stride.slice())
+-  var type = 0
+-  if(dtype === 'float32') {
+-    type = gl.FLOAT
+-  } else if(dtype === 'float64') {
+-    type = gl.FLOAT
+-    packed = false
+-    dtype = 'float32'
+-  } else if(dtype === 'uint8') {
+-    type = gl.UNSIGNED_BYTE
+-  } else {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
+-    dtype = 'uint8'
+-  }
+-  var format = 0
+-  if(shape.length === 2) {
+-    format = gl.LUMINANCE
+-    shape = [shape[0], shape[1], 1]
+-    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
+-  } else if(shape.length === 3) {
+-    if(shape[2] === 1) {
+-      format = gl.ALPHA
+-    } else if(shape[2] === 2) {
+-      format = gl.LUMINANCE_ALPHA
+-    } else if(shape[2] === 3) {
+-      format = gl.RGB
+-    } else if(shape[2] === 4) {
+-      format = gl.RGBA
+-    } else {
+-      throw new Error('gl-texture2d: Invalid shape for pixel coords')
++var GL_TABLE = null
++
++function getType(gl, type) {
++  if(!GL_TABLE) {
++    var typeNames = Object.keys(GL_TO_GLSL_TYPES)
++    GL_TABLE = {}
++    for(var i=0; i<typeNames.length; ++i) {
++      var tn = typeNames[i]
++      GL_TABLE[gl[tn]] = GL_TO_GLSL_TYPES[tn]
+     }
+-  } else {
+-    throw new Error('gl-texture2d: Invalid shape for texture')
+-  }
+-  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
+   }
+-  var buffer, buf_store
+-  var size = array.size
+-  if(!packed) {
+-    var stride = [shape[2], shape[2]*shape[0], 1]
+-    buf_store = pool.malloc(size, dtype)
+-    var buf_array = ndarray(buf_store, shape, stride, 0)
+-    if((dtype === 'float32' || dtype === 'float64') && type === gl.UNSIGNED_BYTE) {
+-      convertFloatToUint8(buf_array, array)
+-    } else {
+-      ops.assign(buf_array, array)
++  return GL_TABLE[type]
++}
++
++function runtimeUniforms(gl, program) {
++  var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS)
++  var result = []
++  for(var i=0; i<numUniforms; ++i) {
++    var info = gl.getActiveUniform(program, i)
++    if(info) {
++      var type = getType(gl, info.type)
++      if(info.size > 1) {
++        for(var j=0; j<info.size; ++j) {
++          result.push({
++            name: info.name.replace('[0]', '[' + j + ']'),
++            type: type
++          })
++        }
++      } else {
++        result.push({
++          name: info.name,
++          type: type
++        })
++      }
+     }
+-    buffer = buf_store.subarray(0, size)
+-  } else if (array.offset === 0 && array.data.length === size) {
+-    buffer = array.data
+-  } else {
+-    buffer = array.data.subarray(array.offset, array.offset + size)
+-  }
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, shape[0], shape[1], 0, format, type, buffer)
+-  if(!packed) {
+-    pool.free(buf_store)
+   }
+-  return new Texture2D(gl, tex, shape[0], shape[1], format, type)
++  return result
+ }
+ 
+-function createTexture2D(gl) {
+-  if(arguments.length <= 1) {
+-    throw new Error('gl-texture2d: Missing arguments for texture2d constructor')
+-  }
+-  if(!linearTypes) {
+-    lazyInitLinearTypes(gl)
+-  }
+-  if(typeof arguments[1] === 'number') {
+-    return createTextureShape(gl, arguments[1], arguments[2], arguments[3]||gl.RGBA, arguments[4]||gl.UNSIGNED_BYTE)
+-  }
+-  if(Array.isArray(arguments[1])) {
+-    return createTextureShape(gl, arguments[1][0]|0, arguments[1][1]|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
+-  }
+-  if(typeof arguments[1] === 'object') {
+-    var obj = arguments[1]
+-    if(obj instanceof HTMLCanvasElement ||
+-       obj instanceof HTMLImageElement ||
+-       obj instanceof HTMLVideoElement ||
+-       obj instanceof ImageData) {
+-      return createTextureDOM(gl, obj, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
+-    } else if(obj.shape && obj.data && obj.stride) {
+-      return createTextureArray(gl, obj)
++function runtimeAttributes(gl, program) {
++  var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES)
++  var result = []
++  for(var i=0; i<numAttributes; ++i) {
++    var info = gl.getActiveAttrib(program, i)
++    if(info) {
++      result.push({
++        name: info.name,
++        type: getType(gl, info.type)
++      })
+     }
+   }
+-  throw new Error('gl-texture2d: Invalid arguments for texture2d constructor')
++  return result
+ }
+ 
+-},{"ndarray":131,"ndarray-ops":130,"typedarray-pool":151}],116:[function(require,module,exports){
+-module.exports = tokenize
++},{}],102:[function(require,module,exports){
++'use strict'
+ 
+-var literals100 = require('./lib/literals')
+-  , operators = require('./lib/operators')
+-  , builtins100 = require('./lib/builtins')
+-  , literals300es = require('./lib/literals-300es')
+-  , builtins300es = require('./lib/builtins-300es')
++exports.shader   = getShaderReference
++exports.program  = createProgram
+ 
+-var NORMAL = 999          // <-- never emitted
+-  , TOKEN = 9999          // <-- never emitted
+-  , BLOCK_COMMENT = 0
+-  , LINE_COMMENT = 1
+-  , PREPROCESSOR = 2
+-  , OPERATOR = 3
+-  , INTEGER = 4
+-  , FLOAT = 5
+-  , IDENT = 6
+-  , BUILTIN = 7
+-  , KEYWORD = 8
+-  , WHITESPACE = 9
+-  , EOF = 10
+-  , HEX = 11
++var GLError = require("./GLError")
++var formatCompilerError = require('gl-format-compiler-error');
+ 
+-var map = [
+-    'block-comment'
+-  , 'line-comment'
+-  , 'preprocessor'
+-  , 'operator'
+-  , 'integer'
+-  , 'float'
+-  , 'ident'
+-  , 'builtin'
+-  , 'keyword'
+-  , 'whitespace'
+-  , 'eof'
+-  , 'integer'
+-]
++var weakMap = typeof WeakMap === 'undefined' ? require('weakmap-shim') : WeakMap
++var CACHE = new weakMap()
+ 
+-function tokenize(opt) {
+-  var i = 0
+-    , total = 0
+-    , mode = NORMAL
+-    , c
+-    , last
+-    , content = []
+-    , tokens = []
+-    , token_idx = 0
+-    , token_offs = 0
+-    , line = 1
+-    , col = 0
+-    , start = 0
+-    , isnum = false
+-    , isoperator = false
+-    , input = ''
+-    , len
++var SHADER_COUNTER = 0
+ 
+-  opt = opt || {}
+-  var allBuiltins = builtins100
+-  var allLiterals = literals100
+-  if (opt.version === '300 es') {
+-    allBuiltins = builtins300es
+-    allLiterals = literals300es
+-  }
++function ShaderReference(id, src, type, shader, programs, count, cache) {
++  this.id       = id
++  this.src      = src
++  this.type     = type
++  this.shader   = shader
++  this.count    = count
++  this.programs = []
++  this.cache    = cache
++}
+ 
+-  return function(data) {
+-    tokens = []
+-    if (data !== null) return write(data)
+-    return end()
+-  }
++ShaderReference.prototype.dispose = function() {
++  if(--this.count === 0) {
++    var cache    = this.cache
++    var gl       = cache.gl
+ 
+-  function token(data) {
+-    if (data.length) {
+-      tokens.push({
+-        type: map[mode]
+-      , data: data
+-      , position: start
+-      , line: line
+-      , column: col
+-      })
++    //Remove program references
++    var programs = this.programs
++    for(var i=0, n=programs.length; i<n; ++i) {
++      var p = cache.programs[programs[i]]
++      if(p) {
++        delete cache.programs[i]
++        gl.deleteProgram(p)
++      }
+     }
+-  }
+-
+-  function write(chunk) {
+-    i = 0
+-    input += chunk
+-    len = input.length
+ 
+-    var last
++    //Remove shader reference
++    gl.deleteShader(this.shader)
++    delete cache.shaders[(this.type === gl.FRAGMENT_SHADER)|0][this.src]
++  }
++}
+ 
+-    while(c = input[i], i < len) {
+-      last = i
++function ContextCache(gl) {
++  this.gl       = gl
++  this.shaders  = [{}, {}]
++  this.programs = {}
++}
+ 
+-      switch(mode) {
+-        case BLOCK_COMMENT: i = block_comment(); break
+-        case LINE_COMMENT: i = line_comment(); break
+-        case PREPROCESSOR: i = preprocessor(); break
+-        case OPERATOR: i = operator(); break
+-        case INTEGER: i = integer(); break
+-        case HEX: i = hex(); break
+-        case FLOAT: i = decimal(); break
+-        case TOKEN: i = readtoken(); break
+-        case WHITESPACE: i = whitespace(); break
+-        case NORMAL: i = normal(); break
+-      }
++var proto = ContextCache.prototype
+ 
+-      if(last !== i) {
+-        switch(input[last]) {
+-          case '\n': col = 0; ++line; break
+-          default: ++col; break
+-        }
+-      }
++function compileShader(gl, type, src) {
++  var shader = gl.createShader(type)
++  gl.shaderSource(shader, src)
++  gl.compileShader(shader)
++  if(!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
++    var errLog = gl.getShaderInfoLog(shader)
++    try {
++        var fmt = formatCompilerError(errLog, src, type);
++    } catch (e){
++        console.warn('Failed to format compiler error: ' + e);
++        throw new GLError(errLog, 'Error compiling shader:\n' + errLog)
+     }
++    throw new GLError(errLog, fmt.short, fmt.long)
++  }
++  return shader
++}
+ 
+-    total += i
+-    input = input.slice(i)
+-    return tokens
++proto.getShaderReference = function(type, src) {
++  var gl      = this.gl
++  var shaders = this.shaders[(type === gl.FRAGMENT_SHADER)|0]
++  var shader  = shaders[src]
++  if(!shader || !gl.isShader(shader.shader)) {
++    var shaderObj = compileShader(gl, type, src)
++    shader = shaders[src] = new ShaderReference(
++      SHADER_COUNTER++,
++      src,
++      type,
++      shaderObj,
++      [],
++      1,
++      this)
++  } else {
++    shader.count += 1
+   }
++  return shader
++}
+ 
+-  function end(chunk) {
+-    if(content.length) {
+-      token(content.join(''))
+-    }
++function linkProgram(gl, vshader, fshader, attribs, locations) {
++  var program = gl.createProgram()
++  gl.attachShader(program, vshader)
++  gl.attachShader(program, fshader)
++  for(var i=0; i<attribs.length; ++i) {
++    gl.bindAttribLocation(program, locations[i], attribs[i])
++  }
++  gl.linkProgram(program)
++  if(!gl.getProgramParameter(program, gl.LINK_STATUS)) {
++    var errLog = gl.getProgramInfoLog(program)
++    throw new GLError(errLog, 'Error linking program: ' + errLog)
++  }
++  return program
++}
+ 
+-    mode = EOF
+-    token('(eof)')
+-    return tokens
++proto.getProgram = function(vref, fref, attribs, locations) {
++  var token = [vref.id, fref.id, attribs.join(':'), locations.join(':')].join('@')
++  var prog  = this.programs[token]
++  if(!prog || !this.gl.isProgram(prog)) {
++    this.programs[token] = prog = linkProgram(
++      this.gl,
++      vref.shader,
++      fref.shader,
++      attribs,
++      locations)
++    vref.programs.push(token)
++    fref.programs.push(token)
+   }
++  return prog
++}
+ 
+-  function normal() {
+-    content = content.length ? [] : content
++function getCache(gl) {
++  var ctxCache = CACHE.get(gl)
++  if(!ctxCache) {
++    ctxCache = new ContextCache(gl)
++    CACHE.set(gl, ctxCache)
++  }
++  return ctxCache
++}
+ 
+-    if(last === '/' && c === '*') {
+-      start = total + i - 1
+-      mode = BLOCK_COMMENT
+-      last = c
+-      return i + 1
+-    }
++function getShaderReference(gl, type, src) {
++  return getCache(gl).getShaderReference(type, src)
++}
+ 
+-    if(last === '/' && c === '/') {
+-      start = total + i - 1
+-      mode = LINE_COMMENT
+-      last = c
+-      return i + 1
+-    }
++function createProgram(gl, vref, fref, attribs, locations) {
++  return getCache(gl).getProgram(vref, fref, attribs, locations)
++}
+ 
+-    if(c === '#') {
+-      mode = PREPROCESSOR
+-      start = total + i
+-      return i
+-    }
++},{"./GLError":97,"gl-format-compiler-error":72,"weakmap-shim":169}],103:[function(require,module,exports){
++'use strict'
+ 
+-    if(/\s/.test(c)) {
+-      mode = WHITESPACE
+-      start = total + i
+-      return i
+-    }
++module.exports = createSpikes2D
+ 
+-    isnum = /\d/.test(c)
+-    isoperator = /[^\w_]/.test(c)
++function GLSpikes2D(plot) {
++  this.plot = plot
++  this.enable = [true, true, false, false]
++  this.width  = [1, 1, 1, 1]
++  this.color  = [[0,0,0,1],
++                 [0,0,0,1],
++                 [0,0,0,1],
++                 [0,0,0,1]]
++  this.center = [Infinity, Infinity]
++}
+ 
+-    start = total + i
+-    mode = isnum ? INTEGER : isoperator ? OPERATOR : TOKEN
+-    return i
+-  }
++var proto = GLSpikes2D.prototype
+ 
+-  function whitespace() {
+-    if(/[^\s]/g.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
++proto.update = function(options) {
++  options = options || {}
++  this.enable = (options.enable || [true,true,false,false]).slice()
++  this.width  = (options.width || [1,1,1,1]).slice()
++  this.color  = (options.color || [
++                  [0,0,0,1],
++                  [0,0,0,1],
++                  [0,0,0,1],
++                  [0,0,0,1]]).map(function(x) { return x.slice() })
++  this.center = (options.center || [Infinity,Infinity]).slice()
++  this.plot.setOverlayDirty()
++}
+ 
+-  function preprocessor() {
+-    if(c === '\n' && last !== '\\') {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
++proto.draw = function() {
++  var spikeEnable = this.enable
++  var spikeWidth  = this.width
++  var spikeColor  = this.color
++  var spikeCenter = this.center
++  var plot        = this.plot
++  var line        = plot.line
+ 
+-  function line_comment() {
+-    return preprocessor()
+-  }
++  var dataBox     = plot.dataBox
++  var viewPixels  = plot.viewBox
+ 
+-  function block_comment() {
+-    if(c === '/' && last === '*') {
+-      content.push(c)
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i + 1
+-    }
++  line.bind()
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
++  if(dataBox[0] <= spikeCenter[0] && spikeCenter[0] <= dataBox[2] &&
++     dataBox[1] <= spikeCenter[1] && spikeCenter[1] <= dataBox[3]) {
+ 
+-  function operator() {
+-    if(last === '.' && /\d/.test(c)) {
+-      mode = FLOAT
+-      return i
+-    }
++    var centerX = viewPixels[0] + (spikeCenter[0] - dataBox[0]) / (dataBox[2] - dataBox[0]) * (viewPixels[2] - viewPixels[0])
++    var centerY = viewPixels[1] + (spikeCenter[1] - dataBox[1]) / (dataBox[3] - dataBox[1]) * (viewPixels[3] - viewPixels[1])
+ 
+-    if(last === '/' && c === '*') {
+-      mode = BLOCK_COMMENT
+-      return i
++    if(spikeEnable[0]) {
++     line.drawLine(
++       centerX, centerY,
++       viewPixels[0], centerY,
++       spikeWidth[0], spikeColor[0])
+     }
+-
+-    if(last === '/' && c === '/') {
+-      mode = LINE_COMMENT
+-      return i
++    if(spikeEnable[1]) {
++     line.drawLine(
++       centerX, centerY,
++       centerX, viewPixels[1],
++       spikeWidth[1], spikeColor[1])
+     }
+-
+-    if(c === '.' && content.length) {
+-      while(determine_operator(content));
+-
+-      mode = FLOAT
+-      return i
++    if(spikeEnable[2]) {
++      line.drawLine(
++        centerX, centerY,
++        viewPixels[2], centerY,
++        spikeWidth[2], spikeColor[2])
+     }
+-
+-    if(c === ';' || c === ')' || c === '(') {
+-      if(content.length) while(determine_operator(content));
+-      token(c)
+-      mode = NORMAL
+-      return i + 1
++    if(spikeEnable[3]) {
++      line.drawLine(
++        centerX, centerY,
++        centerX, viewPixels[3],
++        spikeWidth[3], spikeColor[3])
+     }
++  }
++}
+ 
+-    var is_composite_operator = content.length === 2 && c !== '='
+-    if(/[\w_\d\s]/.test(c) || is_composite_operator) {
+-      while(determine_operator(content));
+-      mode = NORMAL
+-      return i
+-    }
++proto.dispose = function() {
++  this.plot.removeOverlay(this)
++}
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
++function createSpikes2D(plot, options) {
++  var spikes = new GLSpikes2D(plot)
++  spikes.update(options)
++  plot.addOverlay(spikes)
++  return spikes
++}
+ 
+-  function determine_operator(buf) {
+-    var j = 0
+-      , idx
+-      , res
++},{}],104:[function(require,module,exports){
++'use strict'
+ 
+-    do {
+-      idx = operators.indexOf(buf.slice(0, buf.length + j).join(''))
+-      res = operators[idx]
++var ndarray = require('ndarray')
++var ops     = require('ndarray-ops')
++var pool    = require('typedarray-pool')
+ 
+-      if(idx === -1) {
+-        if(j-- + buf.length > 0) continue
+-        res = buf.slice(0, 1).join('')
+-      }
++module.exports = createTexture2D
++
++var linearTypes = null
++var filterTypes = null
++var wrapTypes   = null
++
++function lazyInitLinearTypes(gl) {
++  linearTypes = [
++    gl.LINEAR,
++    gl.NEAREST_MIPMAP_LINEAR,
++    gl.LINEAR_MIPMAP_NEAREST,
++    gl.LINEAR_MIPMAP_NEAREST
++  ]
++  filterTypes = [
++    gl.NEAREST,
++    gl.LINEAR,
++    gl.NEAREST_MIPMAP_NEAREST,
++    gl.NEAREST_MIPMAP_LINEAR,
++    gl.LINEAR_MIPMAP_NEAREST,
++    gl.LINEAR_MIPMAP_LINEAR
++  ]
++  wrapTypes = [
++    gl.REPEAT,
++    gl.CLAMP_TO_EDGE,
++    gl.MIRRORED_REPEAT
++  ]
++}
+ 
+-      token(res)
++var convertFloatToUint8 = function(out, inp) {
++  ops.muls(out, inp, 255.0)
++}
+ 
+-      start += res.length
+-      content = content.slice(res.length)
+-      return content.length
+-    } while(1)
++function reshapeTexture(tex, w, h) {
++  var gl = tex.gl
++  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(w < 0 || w > maxSize || h < 0 || h > maxSize) {
++    throw new Error('gl-texture2d: Invalid texture size')
+   }
++  tex._shape = [w, h]
++  tex.bind()
++  gl.texImage2D(gl.TEXTURE_2D, 0, tex.format, w, h, 0, tex.format, tex.type, null)
++  tex._mipLevels = [0]
++  return tex
++}
+ 
+-  function hex() {
+-    if(/[^a-fA-F0-9]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
+-
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
++function Texture2D(gl, handle, width, height, format, type) {
++  this.gl = gl
++  this.handle = handle
++  this.format = format
++  this.type = type
++  this._shape = [width, height]
++  this._mipLevels = [0]
++  this._magFilter = gl.NEAREST
++  this._minFilter = gl.NEAREST
++  this._wrapS = gl.CLAMP_TO_EDGE
++  this._wrapT = gl.CLAMP_TO_EDGE
++  this._anisoSamples = 1
+ 
+-  function integer() {
+-    if(c === '.') {
+-      content.push(c)
+-      mode = FLOAT
+-      last = c
+-      return i + 1
++  var parent = this
++  var wrapVector = [this._wrapS, this._wrapT]
++  Object.defineProperties(wrapVector, [
++    {
++      get: function() {
++        return parent._wrapS
++      },
++      set: function(v) {
++        return parent.wrapS = v
++      }
++    },
++    {
++      get: function() {
++        return parent._wrapT
++      },
++      set: function(v) {
++        return parent.wrapT = v
++      }
+     }
++  ])
++  this._wrapVector = wrapVector
+ 
+-    if(/[eE]/.test(c)) {
+-      content.push(c)
+-      mode = FLOAT
+-      last = c
+-      return i + 1
++  var shapeVector = [this._shape[0], this._shape[1]]
++  Object.defineProperties(shapeVector, [
++    {
++      get: function() {
++        return parent._shape[0]
++      },
++      set: function(v) {
++        return parent.width = v
++      }
++    },
++    {
++      get: function() {
++        return parent._shape[1]
++      },
++      set: function(v) {
++        return parent.height = v
++      }
+     }
++  ])
++  this._shapeVector = shapeVector
++}
+ 
+-    if(c === 'x' && content.length === 1 && content[0] === '0') {
+-      mode = HEX
+-      content.push(c)
+-      last = c
+-      return i + 1
+-    }
++var proto = Texture2D.prototype
+ 
+-    if(/[^\d]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
++Object.defineProperties(proto, {
++  minFilter: {
++    get: function() {
++      return this._minFilter
++    },
++    set: function(v) {
++      this.bind()
++      var gl = this.gl
++      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
++        if(!gl.getExtension('OES_texture_float_linear')) {
++          v = gl.NEAREST
++        }
++      }
++      if(filterTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown filter mode ' + v)
++      }
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, v)
++      return this._minFilter = v
+     }
+-
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
+-
+-  function decimal() {
+-    if(c === 'f') {
+-      content.push(c)
+-      last = c
+-      i += 1
++  },
++  magFilter: {
++    get: function() {
++      return this._magFilter
++    },
++    set: function(v) {
++      this.bind()
++      var gl = this.gl
++      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
++        if(!gl.getExtension('OES_texture_float_linear')) {
++          v = gl.NEAREST
++        }
++      }
++      if(filterTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown filter mode ' + v)
++      }
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, v)
++      return this._magFilter = v
+     }
+-
+-    if(/[eE]/.test(c)) {
+-      content.push(c)
+-      last = c
+-      return i + 1
++  },
++  mipSamples: {
++    get: function() {
++      return this._anisoSamples
++    },
++    set: function(i) {
++      var psamples = this._anisoSamples
++      this._anisoSamples = Math.max(i, 1)|0
++      if(psamples !== this._anisoSamples) {
++        var ext = this.gl.getExtension('EXT_texture_filter_anisotropic')
++        if(ext) {
++          this.gl.texParameterf(this.gl.TEXTURE_2D, ext.TEXTURE_MAX_ANISOTROPY_EXT, this._anisoSamples)
++        }
++      }
++      return this._anisoSamples
+     }
+-
+-    if (c === '-' && /[eE]/.test(last)) {
+-      content.push(c)
+-      last = c
+-      return i + 1
++  },
++  wrapS: {
++    get: function() {
++      return this._wrapS
++    },
++    set: function(v) {
++      this.bind()
++      if(wrapTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++      }
++      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_S, v)
++      return this._wrapS = v
+     }
+-
+-    if(/[^\d]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
++  },
++  wrapT: {
++    get: function() {
++      return this._wrapT
++    },
++    set: function(v) {
++      this.bind()
++      if(wrapTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++      }
++      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_T, v)
++      return this._wrapT = v
+     }
++  },
++  wrap: {
++    get: function() {
++      return this._wrapVector
++    },
++    set: function(v) {
++      if(!Array.isArray(v)) {
++        v = [v,v]
++      }
++      if(v.length !== 2) {
++        throw new Error('gl-texture2d: Must specify wrap mode for rows and columns')
++      }
++      for(var i=0; i<2; ++i) {
++        if(wrapTypes.indexOf(v[i]) < 0) {
++          throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++        }
++      }
++      this._wrapS = v[0]
++      this._wrapT = v[1]
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
++      var gl = this.gl
++      this.bind()
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, this._wrapS)
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, this._wrapT)
+ 
+-  function readtoken() {
+-    if(/[^\d\w_]/.test(c)) {
+-      var contentstr = content.join('')
+-      if(allLiterals.indexOf(contentstr) > -1) {
+-        mode = KEYWORD
+-      } else if(allBuiltins.indexOf(contentstr) > -1) {
+-        mode = BUILTIN
++      return v
++    }
++  },
++  shape: {
++    get: function() {
++      return this._shapeVector
++    },
++    set: function(x) {
++      if(!Array.isArray(x)) {
++        x = [x|0,x|0]
+       } else {
+-        mode = IDENT
++        if(x.length !== 2) {
++          throw new Error('gl-texture2d: Invalid texture shape')
++        }
+       }
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
++      reshapeTexture(this, x[0]|0, x[1]|0)
++      return [x[0]|0, x[1]|0]
+     }
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
+-}
+-
+-},{"./lib/builtins":118,"./lib/builtins-300es":117,"./lib/literals":120,"./lib/literals-300es":119,"./lib/operators":121}],117:[function(require,module,exports){
+-// 300es builtins/reserved words that were previously valid in v100
+-var v100 = require('./builtins')
+-
+-// The texture2D|Cube functions have been removed
+-// And the gl_ features are updated
+-v100 = v100.slice().filter(function (b) {
+-  return !/^(gl\_|texture)/.test(b)
+-})
+-
+-module.exports = v100.concat([
+-  // the updated gl_ constants
+-    'gl_VertexID'
+-  , 'gl_InstanceID'
+-  , 'gl_Position'
+-  , 'gl_PointSize'
+-  , 'gl_FragCoord'
+-  , 'gl_FrontFacing'
+-  , 'gl_FragDepth'
+-  , 'gl_PointCoord'
+-  , 'gl_MaxVertexAttribs'
+-  , 'gl_MaxVertexUniformVectors'
+-  , 'gl_MaxVertexOutputVectors'
+-  , 'gl_MaxFragmentInputVectors'
+-  , 'gl_MaxVertexTextureImageUnits'
+-  , 'gl_MaxCombinedTextureImageUnits'
+-  , 'gl_MaxTextureImageUnits'
+-  , 'gl_MaxFragmentUniformVectors'
+-  , 'gl_MaxDrawBuffers'
+-  , 'gl_MinProgramTexelOffset'
+-  , 'gl_MaxProgramTexelOffset'
+-  , 'gl_DepthRangeParameters'
+-  , 'gl_DepthRange'
+-
+-  // other builtins
+-  , 'trunc'
+-  , 'round'
+-  , 'roundEven'
+-  , 'isnan'
+-  , 'isinf'
+-  , 'floatBitsToInt'
+-  , 'floatBitsToUint'
+-  , 'intBitsToFloat'
+-  , 'uintBitsToFloat'
+-  , 'packSnorm2x16'
+-  , 'unpackSnorm2x16'
+-  , 'packUnorm2x16'
+-  , 'unpackUnorm2x16'
+-  , 'packHalf2x16'
+-  , 'unpackHalf2x16'
+-  , 'outerProduct'
+-  , 'transpose'
+-  , 'determinant'
+-  , 'inverse'
+-  , 'texture'
+-  , 'textureSize'
+-  , 'textureProj'
+-  , 'textureLod'
+-  , 'textureOffset'
+-  , 'texelFetch'
+-  , 'texelFetchOffset'
+-  , 'textureProjOffset'
+-  , 'textureLodOffset'
+-  , 'textureProjLod'
+-  , 'textureProjLodOffset'
+-  , 'textureGrad'
+-  , 'textureGradOffset'
+-  , 'textureProjGrad'
+-  , 'textureProjGradOffset'
+-])
+-
+-},{"./builtins":118}],118:[function(require,module,exports){
+-module.exports = [
+-  // Keep this list sorted
+-  'abs'
+-  , 'acos'
+-  , 'all'
+-  , 'any'
+-  , 'asin'
+-  , 'atan'
+-  , 'ceil'
+-  , 'clamp'
+-  , 'cos'
+-  , 'cross'
+-  , 'dFdx'
+-  , 'dFdy'
+-  , 'degrees'
+-  , 'distance'
+-  , 'dot'
+-  , 'equal'
+-  , 'exp'
+-  , 'exp2'
+-  , 'faceforward'
+-  , 'floor'
+-  , 'fract'
+-  , 'gl_BackColor'
+-  , 'gl_BackLightModelProduct'
+-  , 'gl_BackLightProduct'
+-  , 'gl_BackMaterial'
+-  , 'gl_BackSecondaryColor'
+-  , 'gl_ClipPlane'
+-  , 'gl_ClipVertex'
+-  , 'gl_Color'
+-  , 'gl_DepthRange'
+-  , 'gl_DepthRangeParameters'
+-  , 'gl_EyePlaneQ'
+-  , 'gl_EyePlaneR'
+-  , 'gl_EyePlaneS'
+-  , 'gl_EyePlaneT'
+-  , 'gl_Fog'
+-  , 'gl_FogCoord'
+-  , 'gl_FogFragCoord'
+-  , 'gl_FogParameters'
+-  , 'gl_FragColor'
+-  , 'gl_FragCoord'
+-  , 'gl_FragData'
+-  , 'gl_FragDepth'
+-  , 'gl_FragDepthEXT'
+-  , 'gl_FrontColor'
+-  , 'gl_FrontFacing'
+-  , 'gl_FrontLightModelProduct'
+-  , 'gl_FrontLightProduct'
+-  , 'gl_FrontMaterial'
+-  , 'gl_FrontSecondaryColor'
+-  , 'gl_LightModel'
+-  , 'gl_LightModelParameters'
+-  , 'gl_LightModelProducts'
+-  , 'gl_LightProducts'
+-  , 'gl_LightSource'
+-  , 'gl_LightSourceParameters'
+-  , 'gl_MaterialParameters'
+-  , 'gl_MaxClipPlanes'
+-  , 'gl_MaxCombinedTextureImageUnits'
+-  , 'gl_MaxDrawBuffers'
+-  , 'gl_MaxFragmentUniformComponents'
+-  , 'gl_MaxLights'
+-  , 'gl_MaxTextureCoords'
+-  , 'gl_MaxTextureImageUnits'
+-  , 'gl_MaxTextureUnits'
+-  , 'gl_MaxVaryingFloats'
+-  , 'gl_MaxVertexAttribs'
+-  , 'gl_MaxVertexTextureImageUnits'
+-  , 'gl_MaxVertexUniformComponents'
+-  , 'gl_ModelViewMatrix'
+-  , 'gl_ModelViewMatrixInverse'
+-  , 'gl_ModelViewMatrixInverseTranspose'
+-  , 'gl_ModelViewMatrixTranspose'
+-  , 'gl_ModelViewProjectionMatrix'
+-  , 'gl_ModelViewProjectionMatrixInverse'
+-  , 'gl_ModelViewProjectionMatrixInverseTranspose'
+-  , 'gl_ModelViewProjectionMatrixTranspose'
+-  , 'gl_MultiTexCoord0'
+-  , 'gl_MultiTexCoord1'
+-  , 'gl_MultiTexCoord2'
+-  , 'gl_MultiTexCoord3'
+-  , 'gl_MultiTexCoord4'
+-  , 'gl_MultiTexCoord5'
+-  , 'gl_MultiTexCoord6'
+-  , 'gl_MultiTexCoord7'
+-  , 'gl_Normal'
+-  , 'gl_NormalMatrix'
+-  , 'gl_NormalScale'
+-  , 'gl_ObjectPlaneQ'
+-  , 'gl_ObjectPlaneR'
+-  , 'gl_ObjectPlaneS'
+-  , 'gl_ObjectPlaneT'
+-  , 'gl_Point'
+-  , 'gl_PointCoord'
+-  , 'gl_PointParameters'
+-  , 'gl_PointSize'
+-  , 'gl_Position'
+-  , 'gl_ProjectionMatrix'
+-  , 'gl_ProjectionMatrixInverse'
+-  , 'gl_ProjectionMatrixInverseTranspose'
+-  , 'gl_ProjectionMatrixTranspose'
+-  , 'gl_SecondaryColor'
+-  , 'gl_TexCoord'
+-  , 'gl_TextureEnvColor'
+-  , 'gl_TextureMatrix'
+-  , 'gl_TextureMatrixInverse'
+-  , 'gl_TextureMatrixInverseTranspose'
+-  , 'gl_TextureMatrixTranspose'
+-  , 'gl_Vertex'
+-  , 'greaterThan'
+-  , 'greaterThanEqual'
+-  , 'inversesqrt'
+-  , 'length'
+-  , 'lessThan'
+-  , 'lessThanEqual'
+-  , 'log'
+-  , 'log2'
+-  , 'matrixCompMult'
+-  , 'max'
+-  , 'min'
+-  , 'mix'
+-  , 'mod'
+-  , 'normalize'
+-  , 'not'
+-  , 'notEqual'
+-  , 'pow'
+-  , 'radians'
+-  , 'reflect'
+-  , 'refract'
+-  , 'sign'
+-  , 'sin'
+-  , 'smoothstep'
+-  , 'sqrt'
+-  , 'step'
+-  , 'tan'
+-  , 'texture2D'
+-  , 'texture2DLod'
+-  , 'texture2DProj'
+-  , 'texture2DProjLod'
+-  , 'textureCube'
+-  , 'textureCubeLod'
+-  , 'texture2DLodEXT'
+-  , 'texture2DProjLodEXT'
+-  , 'textureCubeLodEXT'
+-  , 'texture2DGradEXT'
+-  , 'texture2DProjGradEXT'
+-  , 'textureCubeGradEXT'
+-]
++  },
++  width: {
++    get: function() {
++      return this._shape[0]
++    },
++    set: function(w) {
++      w = w|0
++      reshapeTexture(this, w, this._shape[1])
++      return w
++    }
++  },
++  height: {
++    get: function() {
++      return this._shape[1]
++    },
++    set: function(h) {
++      h = h|0
++      reshapeTexture(this, this._shape[0], h)
++      return h
++    }
++  }
++})
+ 
+-},{}],119:[function(require,module,exports){
+-var v100 = require('./literals')
++proto.bind = function(unit) {
++  var gl = this.gl
++  if(unit !== undefined) {
++    gl.activeTexture(gl.TEXTURE0 + (unit|0))
++  }
++  gl.bindTexture(gl.TEXTURE_2D, this.handle)
++  if(unit !== undefined) {
++    return (unit|0)
++  }
++  return gl.getParameter(gl.ACTIVE_TEXTURE) - gl.TEXTURE0
++}
+ 
+-module.exports = v100.slice().concat([
+-   'layout'
+-  , 'centroid'
+-  , 'smooth'
+-  , 'case'
+-  , 'mat2x2'
+-  , 'mat2x3'
+-  , 'mat2x4'
+-  , 'mat3x2'
+-  , 'mat3x3'
+-  , 'mat3x4'
+-  , 'mat4x2'
+-  , 'mat4x3'
+-  , 'mat4x4'
+-  , 'uint'
+-  , 'uvec2'
+-  , 'uvec3'
+-  , 'uvec4'
+-  , 'samplerCubeShadow'
+-  , 'sampler2DArray'
+-  , 'sampler2DArrayShadow'
+-  , 'isampler2D'
+-  , 'isampler3D'
+-  , 'isamplerCube'
+-  , 'isampler2DArray'
+-  , 'usampler2D'
+-  , 'usampler3D'
+-  , 'usamplerCube'
+-  , 'usampler2DArray'
+-  , 'coherent'
+-  , 'restrict'
+-  , 'readonly'
+-  , 'writeonly'
+-  , 'resource'
+-  , 'atomic_uint'
+-  , 'noperspective'
+-  , 'patch'
+-  , 'sample'
+-  , 'subroutine'
+-  , 'common'
+-  , 'partition'
+-  , 'active'
+-  , 'filter'
+-  , 'image1D'
+-  , 'image2D'
+-  , 'image3D'
+-  , 'imageCube'
+-  , 'iimage1D'
+-  , 'iimage2D'
+-  , 'iimage3D'
+-  , 'iimageCube'
+-  , 'uimage1D'
+-  , 'uimage2D'
+-  , 'uimage3D'
+-  , 'uimageCube'
+-  , 'image1DArray'
+-  , 'image2DArray'
+-  , 'iimage1DArray'
+-  , 'iimage2DArray'
+-  , 'uimage1DArray'
+-  , 'uimage2DArray'
+-  , 'image1DShadow'
+-  , 'image2DShadow'
+-  , 'image1DArrayShadow'
+-  , 'image2DArrayShadow'
+-  , 'imageBuffer'
+-  , 'iimageBuffer'
+-  , 'uimageBuffer'
+-  , 'sampler1DArray'
+-  , 'sampler1DArrayShadow'
+-  , 'isampler1D'
+-  , 'isampler1DArray'
+-  , 'usampler1D'
+-  , 'usampler1DArray'
+-  , 'isampler2DRect'
+-  , 'usampler2DRect'
+-  , 'samplerBuffer'
+-  , 'isamplerBuffer'
+-  , 'usamplerBuffer'
+-  , 'sampler2DMS'
+-  , 'isampler2DMS'
+-  , 'usampler2DMS'
+-  , 'sampler2DMSArray'
+-  , 'isampler2DMSArray'
+-  , 'usampler2DMSArray'
+-])
++proto.dispose = function() {
++  this.gl.deleteTexture(this.handle)
++}
+ 
+-},{"./literals":120}],120:[function(require,module,exports){
+-module.exports = [
+-  // current
+-    'precision'
+-  , 'highp'
+-  , 'mediump'
+-  , 'lowp'
+-  , 'attribute'
+-  , 'const'
+-  , 'uniform'
+-  , 'varying'
+-  , 'break'
+-  , 'continue'
+-  , 'do'
+-  , 'for'
+-  , 'while'
+-  , 'if'
+-  , 'else'
+-  , 'in'
+-  , 'out'
+-  , 'inout'
+-  , 'float'
+-  , 'int'
+-  , 'void'
+-  , 'bool'
+-  , 'true'
+-  , 'false'
+-  , 'discard'
+-  , 'return'
+-  , 'mat2'
+-  , 'mat3'
+-  , 'mat4'
+-  , 'vec2'
+-  , 'vec3'
+-  , 'vec4'
+-  , 'ivec2'
+-  , 'ivec3'
+-  , 'ivec4'
+-  , 'bvec2'
+-  , 'bvec3'
+-  , 'bvec4'
+-  , 'sampler1D'
+-  , 'sampler2D'
+-  , 'sampler3D'
+-  , 'samplerCube'
+-  , 'sampler1DShadow'
+-  , 'sampler2DShadow'
+-  , 'struct'
++proto.generateMipmap = function() {
++  this.bind()
++  this.gl.generateMipmap(this.gl.TEXTURE_2D)
+ 
+-  // future
+-  , 'asm'
+-  , 'class'
+-  , 'union'
+-  , 'enum'
+-  , 'typedef'
+-  , 'template'
+-  , 'this'
+-  , 'packed'
+-  , 'goto'
+-  , 'switch'
+-  , 'default'
+-  , 'inline'
+-  , 'noinline'
+-  , 'volatile'
+-  , 'public'
+-  , 'static'
+-  , 'extern'
+-  , 'external'
+-  , 'interface'
+-  , 'long'
+-  , 'short'
+-  , 'double'
+-  , 'half'
+-  , 'fixed'
+-  , 'unsigned'
+-  , 'input'
+-  , 'output'
+-  , 'hvec2'
+-  , 'hvec3'
+-  , 'hvec4'
+-  , 'dvec2'
+-  , 'dvec3'
+-  , 'dvec4'
+-  , 'fvec2'
+-  , 'fvec3'
+-  , 'fvec4'
+-  , 'sampler2DRect'
+-  , 'sampler3DRect'
+-  , 'sampler2DRectShadow'
+-  , 'sizeof'
+-  , 'cast'
+-  , 'namespace'
+-  , 'using'
+-]
++  //Update mip levels
++  var l = Math.min(this._shape[0], this._shape[1])
++  for(var i=0; l>0; ++i, l>>>=1) {
++    if(this._mipLevels.indexOf(i) < 0) {
++      this._mipLevels.push(i)
++    }
++  }
++}
+ 
+-},{}],121:[function(require,module,exports){
+-module.exports = [
+-    '<<='
+-  , '>>='
+-  , '++'
+-  , '--'
+-  , '<<'
+-  , '>>'
+-  , '<='
+-  , '>='
+-  , '=='
+-  , '!='
+-  , '&&'
+-  , '||'
+-  , '+='
+-  , '-='
+-  , '*='
+-  , '/='
+-  , '%='
+-  , '&='
+-  , '^^'
+-  , '^='
+-  , '|='
+-  , '('
+-  , ')'
+-  , '['
+-  , ']'
+-  , '.'
+-  , '!'
+-  , '~'
+-  , '*'
+-  , '/'
+-  , '%'
+-  , '+'
+-  , '-'
+-  , '<'
+-  , '>'
+-  , '&'
+-  , '^'
+-  , '|'
+-  , '?'
+-  , ':'
+-  , '='
+-  , ','
+-  , ';'
+-  , '{'
+-  , '}'
+-]
++proto.setPixels = function(data, x_off, y_off, mip_level) {
++  var gl = this.gl
++  this.bind()
++  if(Array.isArray(x_off)) {
++    mip_level = y_off
++    y_off = x_off[1]|0
++    x_off = x_off[0]|0
++  } else {
++    x_off = x_off || 0
++    y_off = y_off || 0
++  }
++  mip_level = mip_level || 0
++  if(data instanceof HTMLCanvasElement ||
++     data instanceof ImageData ||
++     data instanceof HTMLImageElement ||
++     data instanceof HTMLVideoElement) {
++    var needsMip = this._mipLevels.indexOf(mip_level) < 0
++    if(needsMip) {
++      gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, this.type, data)
++      this._mipLevels.push(mip_level)
++    } else {
++      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, this.format, this.type, data)
++    }
++  } else if(data.shape && data.stride && data.data) {
++    if(data.shape.length < 2 ||
++       x_off + data.shape[1] > this._shape[1]>>>mip_level ||
++       y_off + data.shape[0] > this._shape[0]>>>mip_level ||
++       x_off < 0 ||
++       y_off < 0) {
++      throw new Error('gl-texture2d: Texture dimensions are out of bounds')
++    }
++    texSubImageArray(gl, x_off, y_off, mip_level, this.format, this.type, this._mipLevels, data)
++  } else {
++    throw new Error('gl-texture2d: Unsupported data type')
++  }
++}
+ 
+-},{}],122:[function(require,module,exports){
+-var tokenize = require('./index')
+ 
+-module.exports = tokenizeString
++function isPacked(shape, stride) {
++  if(shape.length === 3) {
++    return  (stride[2] === 1) &&
++            (stride[1] === shape[0]*shape[2]) &&
++            (stride[0] === shape[2])
++  }
++  return  (stride[0] === 1) &&
++          (stride[1] === shape[0])
++}
++
++function texSubImageArray(gl, x_off, y_off, mip_level, cformat, ctype, mipLevels, array) {
++  var dtype = array.dtype
++  var shape = array.shape.slice()
++  if(shape.length < 2 || shape.length > 3) {
++    throw new Error('gl-texture2d: Invalid ndarray, must be 2d or 3d')
++  }
++  var type = 0, format = 0
++  var packed = isPacked(shape, array.stride.slice())
++  if(dtype === 'float32') {
++    type = gl.FLOAT
++  } else if(dtype === 'float64') {
++    type = gl.FLOAT
++    packed = false
++    dtype = 'float32'
++  } else if(dtype === 'uint8') {
++    type = gl.UNSIGNED_BYTE
++  } else {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++    dtype = 'uint8'
++  }
++  var channels = 1
++  if(shape.length === 2) {
++    format = gl.LUMINANCE
++    shape = [shape[0], shape[1], 1]
++    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
++  } else if(shape.length === 3) {
++    if(shape[2] === 1) {
++      format = gl.ALPHA
++    } else if(shape[2] === 2) {
++      format = gl.LUMINANCE_ALPHA
++    } else if(shape[2] === 3) {
++      format = gl.RGB
++    } else if(shape[2] === 4) {
++      format = gl.RGBA
++    } else {
++      throw new Error('gl-texture2d: Invalid shape for pixel coords')
++    }
++    channels = shape[2]
++  } else {
++    throw new Error('gl-texture2d: Invalid shape for texture')
++  }
++  //For 1-channel textures allow conversion between formats
++  if((format  === gl.LUMINANCE || format  === gl.ALPHA) &&
++     (cformat === gl.LUMINANCE || cformat === gl.ALPHA)) {
++    format = cformat
++  }
++  if(format !== cformat) {
++    throw new Error('gl-texture2d: Incompatible texture format for setPixels')
++  }
++  var size = array.size
++  var needsMip = mipLevels.indexOf(mip_level) < 0
++  if(needsMip) {
++    mipLevels.push(mip_level)
++  }
++  if(type === ctype && packed) {
++    //Array data types are compatible, can directly copy into texture
++    if(array.offset === 0 && array.data.length === size) {
++      if(needsMip) {
++        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data)
++      } else {
++        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data)
++      }
++    } else {
++      if(needsMip) {
++        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data.subarray(array.offset, array.offset+size))
++      } else {
++        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data.subarray(array.offset, array.offset+size))
++      }
++    }
++  } else {
++    //Need to do type conversion to pack data into buffer
++    var pack_buffer
++    if(ctype === gl.FLOAT) {
++      pack_buffer = pool.mallocFloat32(size)
++    } else {
++      pack_buffer = pool.mallocUint8(size)
++    }
++    var pack_view = ndarray(pack_buffer, shape, [shape[2], shape[2]*shape[0], 1])
++    if(type === gl.FLOAT && ctype === gl.UNSIGNED_BYTE) {
++      convertFloatToUint8(pack_view, array)
++    } else {
++      ops.assign(pack_view, array)
++    }
++    if(needsMip) {
++      gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, pack_buffer.subarray(0, size))
++    } else {
++      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, pack_buffer.subarray(0, size))
++    }
++    if(ctype === gl.FLOAT) {
++      pool.freeFloat32(pack_buffer)
++    } else {
++      pool.freeUint8(pack_buffer)
++    }
++  }
++}
++
++function initTexture(gl) {
++  var tex = gl.createTexture()
++  gl.bindTexture(gl.TEXTURE_2D, tex)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
++  return tex
++}
++
++function createTextureShape(gl, width, height, format, type) {
++  var maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(width < 0 || width > maxTextureSize || height < 0 || height  > maxTextureSize) {
++    throw new Error('gl-texture2d: Invalid texture shape')
++  }
++  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
++    throw new Error('gl-texture2d: Floating point textures not supported on this platform')
++  }
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, format, type, null)
++  return new Texture2D(gl, tex, width, height, format, type)
++}
++
++function createTextureDOM(gl, element, format, type) {
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, format, type, element)
++  return new Texture2D(gl, tex, element.width|0, element.height|0, format, type)
++}
++
++//Creates a texture from an ndarray
++function createTextureArray(gl, array) {
++  var dtype = array.dtype
++  var shape = array.shape.slice()
++  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(shape[0] < 0 || shape[0] > maxSize || shape[1] < 0 || shape[1] > maxSize) {
++    throw new Error('gl-texture2d: Invalid texture size')
++  }
++  var packed = isPacked(shape, array.stride.slice())
++  var type = 0
++  if(dtype === 'float32') {
++    type = gl.FLOAT
++  } else if(dtype === 'float64') {
++    type = gl.FLOAT
++    packed = false
++    dtype = 'float32'
++  } else if(dtype === 'uint8') {
++    type = gl.UNSIGNED_BYTE
++  } else {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++    dtype = 'uint8'
++  }
++  var format = 0
++  if(shape.length === 2) {
++    format = gl.LUMINANCE
++    shape = [shape[0], shape[1], 1]
++    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
++  } else if(shape.length === 3) {
++    if(shape[2] === 1) {
++      format = gl.ALPHA
++    } else if(shape[2] === 2) {
++      format = gl.LUMINANCE_ALPHA
++    } else if(shape[2] === 3) {
++      format = gl.RGB
++    } else if(shape[2] === 4) {
++      format = gl.RGBA
++    } else {
++      throw new Error('gl-texture2d: Invalid shape for pixel coords')
++    }
++  } else {
++    throw new Error('gl-texture2d: Invalid shape for texture')
++  }
++  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++  }
++  var buffer, buf_store
++  var size = array.size
++  if(!packed) {
++    var stride = [shape[2], shape[2]*shape[0], 1]
++    buf_store = pool.malloc(size, dtype)
++    var buf_array = ndarray(buf_store, shape, stride, 0)
++    if((dtype === 'float32' || dtype === 'float64') && type === gl.UNSIGNED_BYTE) {
++      convertFloatToUint8(buf_array, array)
++    } else {
++      ops.assign(buf_array, array)
++    }
++    buffer = buf_store.subarray(0, size)
++  } else if (array.offset === 0 && array.data.length === size) {
++    buffer = array.data
++  } else {
++    buffer = array.data.subarray(array.offset, array.offset + size)
++  }
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, shape[0], shape[1], 0, format, type, buffer)
++  if(!packed) {
++    pool.free(buf_store)
++  }
++  return new Texture2D(gl, tex, shape[0], shape[1], format, type)
++}
++
++function createTexture2D(gl) {
++  if(arguments.length <= 1) {
++    throw new Error('gl-texture2d: Missing arguments for texture2d constructor')
++  }
++  if(!linearTypes) {
++    lazyInitLinearTypes(gl)
++  }
++  if(typeof arguments[1] === 'number') {
++    return createTextureShape(gl, arguments[1], arguments[2], arguments[3]||gl.RGBA, arguments[4]||gl.UNSIGNED_BYTE)
++  }
++  if(Array.isArray(arguments[1])) {
++    return createTextureShape(gl, arguments[1][0]|0, arguments[1][1]|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
++  }
++  if(typeof arguments[1] === 'object') {
++    var obj = arguments[1]
++    if(obj instanceof HTMLCanvasElement ||
++       obj instanceof HTMLImageElement ||
++       obj instanceof HTMLVideoElement ||
++       obj instanceof ImageData) {
++      return createTextureDOM(gl, obj, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
++    } else if(obj.shape && obj.data && obj.stride) {
++      return createTextureArray(gl, obj)
++    }
++  }
++  throw new Error('gl-texture2d: Invalid arguments for texture2d constructor')
++}
++
++},{"ndarray":123,"ndarray-ops":122,"typedarray-pool":162}],105:[function(require,module,exports){
++var tokenize = require('glsl-tokenizer')
++var atob     = require('atob-lite')
+ 
+-function tokenizeString(str, opt) {
+-  var generator = tokenize(opt)
+-  var tokens = []
++module.exports = getName
+ 
+-  tokens = tokens.concat(generator(str))
+-  tokens = tokens.concat(generator(null))
++function getName(src) {
++  var tokens = Array.isArray(src)
++    ? src
++    : tokenize(src)
+ 
+-  return tokens
+-}
++  for (var i = 0; i < tokens.length; i++) {
++    var token = tokens[i]
++    if (token.type !== 'preprocessor') continue
++    var match = token.data.match(/\#define\s+SHADER_NAME(_B64)?\s+(.+)$/)
++    if (!match) continue
++    if (!match[2]) continue
+ 
+-},{"./index":116}],123:[function(require,module,exports){
+-"use strict"
++    var b64  = match[1]
++    var name = match[2]
+ 
+-function iota(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = i
++    return (b64 ? atob(name) : name).trim()
+   }
+-  return result
+ }
+ 
+-module.exports = iota
+-},{}],124:[function(require,module,exports){
+-/**
+- * Determine if an object is Buffer
+- *
+- * Author:   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+- * License:  MIT
+- *
+- * `npm install is-buffer`
+- */
+-
+-module.exports = function (obj) {
+-  return !!(obj != null &&
+-    (obj._isBuffer || // For Safari 5-7 (missing Object.prototype.constructor)
+-      (obj.constructor &&
+-      typeof obj.constructor.isBuffer === 'function' &&
+-      obj.constructor.isBuffer(obj))
+-    ))
+-}
++},{"atob-lite":10,"glsl-tokenizer":112}],106:[function(require,module,exports){
++module.exports = tokenize
+ 
+-},{}],125:[function(require,module,exports){
+-'use strict'
++var literals100 = require('./lib/literals')
++  , operators = require('./lib/operators')
++  , builtins100 = require('./lib/builtins')
++  , literals300es = require('./lib/literals-300es')
++  , builtins300es = require('./lib/builtins-300es')
+ 
+-module.exports = mouseListen
++var NORMAL = 999          // <-- never emitted
++  , TOKEN = 9999          // <-- never emitted
++  , BLOCK_COMMENT = 0
++  , LINE_COMMENT = 1
++  , PREPROCESSOR = 2
++  , OPERATOR = 3
++  , INTEGER = 4
++  , FLOAT = 5
++  , IDENT = 6
++  , BUILTIN = 7
++  , KEYWORD = 8
++  , WHITESPACE = 9
++  , EOF = 10
++  , HEX = 11
+ 
+-var mouse = require('mouse-event')
++var map = [
++    'block-comment'
++  , 'line-comment'
++  , 'preprocessor'
++  , 'operator'
++  , 'integer'
++  , 'float'
++  , 'ident'
++  , 'builtin'
++  , 'keyword'
++  , 'whitespace'
++  , 'eof'
++  , 'integer'
++]
+ 
+-function mouseListen(element, callback) {
++function tokenize(opt) {
++  var i = 0
++    , total = 0
++    , mode = NORMAL
++    , c
++    , last
++    , content = []
++    , tokens = []
++    , token_idx = 0
++    , token_offs = 0
++    , line = 1
++    , col = 0
++    , start = 0
++    , isnum = false
++    , isoperator = false
++    , input = ''
++    , len
+ 
+-  if(!callback) {
+-    callback = element
+-    element = window
++  opt = opt || {}
++  var allBuiltins = builtins100
++  var allLiterals = literals100
++  if (opt.version === '300 es') {
++    allBuiltins = builtins300es
++    allLiterals = literals300es
+   }
+ 
+-  var buttonState = 0
+-  var x = 0
+-  var y = 0
+-  var mods = {
+-    shift:   false,
+-    alt:     false,
+-    control: false,
+-    meta:    false
++  return function(data) {
++    tokens = []
++    if (data !== null) return write(data.replace ? data.replace(/\r\n/g, '\n') : data)
++    return end()
+   }
+-  var attached = false
+ 
+-  function updateMods(ev) {
+-    var changed = false
+-    if('altKey' in ev) {
+-      changed = changed || ev.altKey !== mods.alt
+-      mods.alt = !!ev.altKey
+-    }
+-    if('shiftKey' in ev) {
+-      changed = changed || ev.shiftKey !== mods.shift
+-      mods.shift = !!ev.shiftKey
+-    }
+-    if('ctrlKey' in ev) {
+-      changed = changed || ev.ctrlKey !== mods.control
+-      mods.control = !!ev.ctrlKey
+-    }
+-    if('metaKey' in ev) {
+-      changed = changed || ev.metaKey !== mods.meta
+-      mods.meta = !!ev.metaKey
++  function token(data) {
++    if (data.length) {
++      tokens.push({
++        type: map[mode]
++      , data: data
++      , position: start
++      , line: line
++      , column: col
++      })
+     }
+-    return changed
+   }
+ 
+-  function handleEvent(nextButtons, ev) {
+-    var nextX = mouse.x(ev)
+-    var nextY = mouse.y(ev)
+-    if('buttons' in ev) {
+-      nextButtons = ev.buttons|0
+-    }
+-    if(nextButtons !== buttonState ||
+-       nextX !== x ||
+-       nextY !== y ||
+-       updateMods(ev)) {
+-      buttonState = nextButtons|0
+-      x = nextX||0
+-      y = nextY||0
+-      callback(buttonState, x, y, mods)
+-    }
+-  }
++  function write(chunk) {
++    i = 0
++    input += chunk
++    len = input.length
+ 
+-  function clearState(ev) {
+-    handleEvent(0, ev)
+-  }
++    var last
+ 
+-  function handleBlur() {
+-    if(buttonState ||
+-      x ||
+-      y ||
+-      mods.shift ||
+-      mods.alt ||
+-      mods.meta ||
+-      mods.control) {
++    while(c = input[i], i < len) {
++      last = i
+ 
+-      x = y = 0
+-      buttonState = 0
+-      mods.shift = mods.alt = mods.control = mods.meta = false
+-      callback(0, 0, 0, mods)
+-    }
+-  }
++      switch(mode) {
++        case BLOCK_COMMENT: i = block_comment(); break
++        case LINE_COMMENT: i = line_comment(); break
++        case PREPROCESSOR: i = preprocessor(); break
++        case OPERATOR: i = operator(); break
++        case INTEGER: i = integer(); break
++        case HEX: i = hex(); break
++        case FLOAT: i = decimal(); break
++        case TOKEN: i = readtoken(); break
++        case WHITESPACE: i = whitespace(); break
++        case NORMAL: i = normal(); break
++      }
+ 
+-  function handleMods(ev) {
+-    if(updateMods(ev)) {
+-      callback(buttonState, x, y, mods)
++      if(last !== i) {
++        switch(input[last]) {
++          case '\n': col = 0; ++line; break
++          default: ++col; break
++        }
++      }
+     }
++
++    total += i
++    input = input.slice(i)
++    return tokens
+   }
+ 
+-  function handleMouseMove(ev) {
+-    if(mouse.buttons(ev) === 0) {
+-      handleEvent(0, ev)
+-    } else {
+-      handleEvent(buttonState, ev)
++  function end(chunk) {
++    if(content.length) {
++      token(content.join(''))
+     }
+-  }
+ 
+-  function handleMouseDown(ev) {
+-    handleEvent(buttonState | mouse.buttons(ev), ev)
++    mode = EOF
++    token('(eof)')
++    return tokens
+   }
+ 
+-  function handleMouseUp(ev) {
+-    handleEvent(buttonState & ~mouse.buttons(ev), ev)
+-  }
++  function normal() {
++    content = content.length ? [] : content
+ 
+-  function attachListeners() {
+-    if(attached) {
+-      return
++    if(last === '/' && c === '*') {
++      start = total + i - 1
++      mode = BLOCK_COMMENT
++      last = c
++      return i + 1
+     }
+-    attached = true
+-
+-    element.addEventListener('mousemove', handleMouseMove)
+-
+-    element.addEventListener('mousedown', handleMouseDown)
+-
+-    element.addEventListener('mouseup', handleMouseUp)
+-
+-    element.addEventListener('mouseleave', clearState)
+-    element.addEventListener('mouseenter', clearState)
+-    element.addEventListener('mouseout', clearState)
+-    element.addEventListener('mouseover', clearState)
+ 
+-    element.addEventListener('blur', handleBlur)
+-
+-    element.addEventListener('keyup', handleMods)
+-    element.addEventListener('keydown', handleMods)
+-    element.addEventListener('keypress', handleMods)
+-
+-    if(element !== window) {
+-      window.addEventListener('blur', handleBlur)
+-
+-      window.addEventListener('keyup', handleMods)
+-      window.addEventListener('keydown', handleMods)
+-      window.addEventListener('keypress', handleMods)
++    if(last === '/' && c === '/') {
++      start = total + i - 1
++      mode = LINE_COMMENT
++      last = c
++      return i + 1
+     }
+-  }
+ 
+-  function detachListeners() {
+-    if(!attached) {
+-      return
++    if(c === '#') {
++      mode = PREPROCESSOR
++      start = total + i
++      return i
+     }
+-    attached = false
+-
+-    element.removeEventListener('mousemove', handleMouseMove)
+-
+-    element.removeEventListener('mousedown', handleMouseDown)
+-
+-    element.removeEventListener('mouseup', handleMouseUp)
+ 
+-    element.removeEventListener('mouseleave', clearState)
+-    element.removeEventListener('mouseenter', clearState)
+-    element.removeEventListener('mouseout', clearState)
+-    element.removeEventListener('mouseover', clearState)
+-
+-    element.removeEventListener('blur', handleBlur)
+-
+-    element.removeEventListener('keyup', handleMods)
+-    element.removeEventListener('keydown', handleMods)
+-    element.removeEventListener('keypress', handleMods)
+-
+-    if(element !== window) {
+-      window.removeEventListener('blur', handleBlur)
+-
+-      window.removeEventListener('keyup', handleMods)
+-      window.removeEventListener('keydown', handleMods)
+-      window.removeEventListener('keypress', handleMods)
++    if(/\s/.test(c)) {
++      mode = WHITESPACE
++      start = total + i
++      return i
+     }
+-  }
+ 
+-  //Attach listeners
+-  attachListeners()
++    isnum = /\d/.test(c)
++    isoperator = /[^\w_]/.test(c)
+ 
+-  var result = {
+-    element: element
++    start = total + i
++    mode = isnum ? INTEGER : isoperator ? OPERATOR : TOKEN
++    return i
+   }
+ 
+-  Object.defineProperties(result, {
+-    enabled: {
+-      get: function() { return attached },
+-      set: function(f) {
+-        if(f) {
+-          attachListeners()
+-        } else {
+-          detachListeners
+-        }
+-      },
+-      enumerable: true
+-    },
+-    buttons: {
+-      get: function() { return buttonState },
+-      enumerable: true
+-    },
+-    x: {
+-      get: function() { return x },
+-      enumerable: true
+-    },
+-    y: {
+-      get: function() { return y },
+-      enumerable: true
+-    },
+-    mods: {
+-      get: function() { return mods },
+-      enumerable: true
+-    }
+-  })
+-
+-  return result
+-}
+-
+-},{"mouse-event":126}],126:[function(require,module,exports){
+-'use strict'
+-
+-function mouseButtons(ev) {
+-  if(typeof ev === 'object') {
+-    if('buttons' in ev) {
+-      return ev.buttons
+-    } else if('which' in ev) {
+-      var b = ev.which
+-      if(b === 2) {
+-        return 4
+-      } else if(b === 3) {
+-        return 2
+-      } else if(b > 0) {
+-        return 1<<(b-1)
+-      }
+-    } else if('button' in ev) {
+-      var b = ev.button
+-      if(b === 1) {
+-        return 4
+-      } else if(b === 2) {
+-        return 2
+-      } else if(b >= 0) {
+-        return 1<<b
+-      }
++  function whitespace() {
++    if(/[^\s]/g.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
+     }
++    content.push(c)
++    last = c
++    return i + 1
+   }
+-  return 0
+-}
+-exports.buttons = mouseButtons
+-
+-function mouseElement(ev) {
+-  return ev.target || ev.srcElement || window
+-}
+-exports.element = mouseElement
+ 
+-function mouseRelativeX(ev) {
+-  if(typeof ev === 'object') {
+-    if('offsetX' in ev) {
+-      return ev.offsetX
++  function preprocessor() {
++    if((c === '\r' || c === '\n') && last !== '\\') {
++      token(content.join(''))
++      mode = NORMAL
++      return i
+     }
+-    var target = mouseElement(ev)
+-    var bounds = target.getBoundingClientRect()
+-    return ev.clientX - bounds.left
++    content.push(c)
++    last = c
++    return i + 1
+   }
+-  return 0
+-}
+-exports.x = mouseRelativeX
+ 
+-function mouseRelativeY(ev) {
+-  if(typeof ev === 'object') {
+-    if('offsetY' in ev) {
+-      return ev.offsetY
+-    }
+-    var target = mouseElement(ev)
+-    var bounds = target.getBoundingClientRect()
+-    return ev.clientY - bounds.top
++  function line_comment() {
++    return preprocessor()
+   }
+-  return 0
+-}
+-exports.y = mouseRelativeY
+-
+-},{}],127:[function(require,module,exports){
+-module.exports = function parseUnit(str, out) {
+-    if (!out)
+-        out = [ 0, '' ]
+-
+-    str = String(str)
+-    var num = parseFloat(str, 10)
+-    out[0] = num
+-    out[1] = str.match(/[\d.\-\+]*\s*(.*)/)[1] || ''
+-    return out
+-}
+-},{}],128:[function(require,module,exports){
+-'use strict'
+-
+-var parseUnit = require('parse-unit')
+-
+-module.exports = toPX
+ 
+-var PIXELS_PER_INCH = 96
++  function block_comment() {
++    if(c === '/' && last === '*') {
++      content.push(c)
++      token(content.join(''))
++      mode = NORMAL
++      return i + 1
++    }
+ 
+-function getPropertyInPX(element, prop) {
+-  var parts = parseUnit(getComputedStyle(element).getPropertyValue(prop))
+-  return parts[0] * toPX(parts[1], element)
+-}
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-//This brutal hack is needed
+-function getSizeBrutal(unit, element) {
+-  var testDIV = document.createElement('div')
+-  testDIV.style['font-size'] = '128' + unit
+-  element.appendChild(testDIV)
+-  var size = getPropertyInPX(testDIV, 'font-size') / 128
+-  element.removeChild(testDIV)
+-  return size
+-}
++  function operator() {
++    if(last === '.' && /\d/.test(c)) {
++      mode = FLOAT
++      return i
++    }
+ 
+-function toPX(str, element) {
+-  element = element || document.body
+-  str = (str || 'px').trim().toLowerCase()
+-  if(element === window || element === document) {
+-    element = document.body 
+-  }
+-  switch(str) {
+-    case '%':  //Ambiguous, not sure if we should use width or height
+-      return element.clientHeight / 100.0
+-    case 'ch':
+-    case 'ex':
+-      return getSizeBrutal(str, element)
+-    case 'em':
+-      return getPropertyInPX(element, 'font-size')
+-    case 'rem':
+-      return getPropertyInPX(document.body, 'font-size')
+-    case 'vw':
+-      return window.innerWidth/100
+-    case 'vh':
+-      return window.innerHeight/100
+-    case 'vmin':
+-      return Math.min(window.innerWidth, window.innerHeight) / 100
+-    case 'vmax':
+-      return Math.max(window.innerWidth, window.innerHeight) / 100
+-    case 'in':
+-      return PIXELS_PER_INCH
+-    case 'cm':
+-      return PIXELS_PER_INCH / 2.54
+-    case 'mm':
+-      return PIXELS_PER_INCH / 25.4
+-    case 'pt':
+-      return PIXELS_PER_INCH / 72
+-    case 'pc':
+-      return PIXELS_PER_INCH / 6
+-  }
+-  return 1
+-}
+-},{"parse-unit":127}],129:[function(require,module,exports){
+-'use strict'
++    if(last === '/' && c === '*') {
++      mode = BLOCK_COMMENT
++      return i
++    }
+ 
+-var toPX = require('to-px')
++    if(last === '/' && c === '/') {
++      mode = LINE_COMMENT
++      return i
++    }
+ 
+-module.exports = mouseWheelListen
++    if(c === '.' && content.length) {
++      while(determine_operator(content));
+ 
+-function mouseWheelListen(element, callback, noScroll) {
+-  if(typeof element === 'function') {
+-    noScroll = !!callback
+-    callback = element
+-    element = window
+-  }
+-  var lineHeight = toPX('ex', element)
+-  var listener = function(ev) {
+-    if(noScroll) {
+-      ev.preventDefault()
++      mode = FLOAT
++      return i
+     }
+-    var dx = ev.deltaX || 0
+-    var dy = ev.deltaY || 0
+-    var dz = ev.deltaZ || 0
+-    var mode = ev.deltaMode
+-    var scale = 1
+-    switch(mode) {
+-      case 1:
+-        scale = lineHeight
+-      break
+-      case 2:
+-        scale = window.innerHeight
+-      break
++
++    if(c === ';' || c === ')' || c === '(') {
++      if(content.length) while(determine_operator(content));
++      token(c)
++      mode = NORMAL
++      return i + 1
+     }
+-    dx *= scale
+-    dy *= scale
+-    dz *= scale
+-    if(dx || dy || dz) {
+-      return callback(dx, dy, dz)
++
++    var is_composite_operator = content.length === 2 && c !== '='
++    if(/[\w_\d\s]/.test(c) || is_composite_operator) {
++      while(determine_operator(content));
++      mode = NORMAL
++      return i
+     }
++
++    content.push(c)
++    last = c
++    return i + 1
+   }
+-  element.addEventListener('wheel', listener)
+-  return listener
+-}
+ 
+-},{"to-px":128}],130:[function(require,module,exports){
+-"use strict"
++  function determine_operator(buf) {
++    var j = 0
++      , idx
++      , res
+ 
+-var compile = require("cwise-compiler")
++    do {
++      idx = operators.indexOf(buf.slice(0, buf.length + j).join(''))
++      res = operators[idx]
+ 
+-var EmptyProc = {
+-  body: "",
+-  args: [],
+-  thisVars: [],
+-  localVars: []
+-}
++      if(idx === -1) {
++        if(j-- + buf.length > 0) continue
++        res = buf.slice(0, 1).join('')
++      }
+ 
+-function fixup(x) {
+-  if(!x) {
+-    return EmptyProc
+-  }
+-  for(var i=0; i<x.args.length; ++i) {
+-    var a = x.args[i]
+-    if(i === 0) {
+-      x.args[i] = {name: a, lvalue:true, rvalue: !!x.rvalue, count:x.count||1 }
+-    } else {
+-      x.args[i] = {name: a, lvalue:false, rvalue:true, count: 1}
+-    }
+-  }
+-  if(!x.thisVars) {
+-    x.thisVars = []
+-  }
+-  if(!x.localVars) {
+-    x.localVars = []
++      token(res)
++
++      start += res.length
++      content = content.slice(res.length)
++      return content.length
++    } while(1)
+   }
+-  return x
+-}
+ 
+-function pcompile(user_args) {
+-  return compile({
+-    args:     user_args.args,
+-    pre:      fixup(user_args.pre),
+-    body:     fixup(user_args.body),
+-    post:     fixup(user_args.proc),
+-    funcName: user_args.funcName
+-  })
+-}
++  function hex() {
++    if(/[^a-fA-F0-9]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
+ 
+-function makeOp(user_args) {
+-  var args = []
+-  for(var i=0; i<user_args.args.length; ++i) {
+-    args.push("a"+i)
++    content.push(c)
++    last = c
++    return i + 1
+   }
+-  var wrapper = new Function("P", [
+-    "return function ", user_args.funcName, "_ndarrayops(", args.join(","), ") {P(", args.join(","), ");return a0}"
+-  ].join(""))
+-  return wrapper(pcompile(user_args))
+-}
+ 
+-var assign_ops = {
+-  add:  "+",
+-  sub:  "-",
+-  mul:  "*",
+-  div:  "/",
+-  mod:  "%",
+-  band: "&",
+-  bor:  "|",
+-  bxor: "^",
+-  lshift: "<<",
+-  rshift: ">>",
+-  rrshift: ">>>"
+-}
+-;(function(){
+-  for(var id in assign_ops) {
+-    var op = assign_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array","array","array"],
+-      body: {args:["a","b","c"],
+-             body: "a=b"+op+"c"},
+-      funcName: id
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array","array"],
+-      body: {args:["a","b"],
+-             body:"a"+op+"=b"},
+-      rvalue: true,
+-      funcName: id+"eq"
+-    })
+-    exports[id+"s"] = makeOp({
+-      args: ["array", "array", "scalar"],
+-      body: {args:["a","b","s"],
+-             body:"a=b"+op+"s"},
+-      funcName: id+"s"
+-    })
+-    exports[id+"seq"] = makeOp({
+-      args: ["array","scalar"],
+-      body: {args:["a","s"],
+-             body:"a"+op+"=s"},
+-      rvalue: true,
+-      funcName: id+"seq"
+-    })
+-  }
+-})();
++  function integer() {
++    if(c === '.') {
++      content.push(c)
++      mode = FLOAT
++      last = c
++      return i + 1
++    }
+ 
+-var unary_ops = {
+-  not: "!",
+-  bnot: "~",
+-  neg: "-",
+-  recip: "1.0/"
+-}
+-;(function(){
+-  for(var id in unary_ops) {
+-    var op = unary_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array", "array"],
+-      body: {args:["a","b"],
+-             body:"a="+op+"b"},
+-      funcName: id
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array"],
+-      body: {args:["a"],
+-             body:"a="+op+"a"},
+-      rvalue: true,
+-      count: 2,
+-      funcName: id+"eq"
+-    })
+-  }
+-})();
++    if(/[eE]/.test(c)) {
++      content.push(c)
++      mode = FLOAT
++      last = c
++      return i + 1
++    }
+ 
+-var binary_ops = {
+-  and: "&&",
+-  or: "||",
+-  eq: "===",
+-  neq: "!==",
+-  lt: "<",
+-  gt: ">",
+-  leq: "<=",
+-  geq: ">="
+-}
+-;(function() {
+-  for(var id in binary_ops) {
+-    var op = binary_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array","array","array"],
+-      body: {args:["a", "b", "c"],
+-             body:"a=b"+op+"c"},
+-      funcName: id
+-    })
+-    exports[id+"s"] = makeOp({
+-      args: ["array","array","scalar"],
+-      body: {args:["a", "b", "s"],
+-             body:"a=b"+op+"s"},
+-      funcName: id+"s"
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array", "array"],
+-      body: {args:["a", "b"],
+-             body:"a=a"+op+"b"},
+-      rvalue:true,
+-      count:2,
+-      funcName: id+"eq"
+-    })
+-    exports[id+"seq"] = makeOp({
+-      args: ["array", "scalar"],
+-      body: {args:["a","s"],
+-             body:"a=a"+op+"s"},
+-      rvalue:true,
+-      count:2,
+-      funcName: id+"seq"
+-    })
+-  }
+-})();
++    if(c === 'x' && content.length === 1 && content[0] === '0') {
++      mode = HEX
++      content.push(c)
++      last = c
++      return i + 1
++    }
+ 
+-var math_unary = [
+-  "abs",
+-  "acos",
+-  "asin",
+-  "atan",
+-  "ceil",
+-  "cos",
+-  "exp",
+-  "floor",
+-  "log",
+-  "round",
+-  "sin",
+-  "sqrt",
+-  "tan"
+-]
+-;(function() {
+-  for(var i=0; i<math_unary.length; ++i) {
+-    var f = math_unary[i]
+-    exports[f] = makeOp({
+-                    args: ["array", "array"],
+-                    pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                    body: {args:["a","b"], body:"a=this_f(b)", thisVars:["this_f"]},
+-                    funcName: f
+-                  })
+-    exports[f+"eq"] = makeOp({
+-                      args: ["array"],
+-                      pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                      body: {args: ["a"], body:"a=this_f(a)", thisVars:["this_f"]},
+-                      rvalue: true,
+-                      count: 2,
+-                      funcName: f+"eq"
+-                    })
+-  }
+-})();
++    if(/[^\d]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
+ 
+-var math_comm = [
+-  "max",
+-  "min",
+-  "atan2",
+-  "pow"
+-]
+-;(function(){
+-  for(var i=0; i<math_comm.length; ++i) {
+-    var f= math_comm[i]
+-    exports[f] = makeOp({
+-                  args:["array", "array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
+-                  funcName: f
+-                })
+-    exports[f+"s"] = makeOp({
+-                  args:["array", "array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
+-                  funcName: f+"s"
+-                  })
+-    exports[f+"eq"] = makeOp({ args:["array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
+-                  rvalue: true,
+-                  count: 2,
+-                  funcName: f+"eq"
+-                  })
+-    exports[f+"seq"] = makeOp({ args:["array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
+-                  rvalue:true,
+-                  count:2,
+-                  funcName: f+"seq"
+-                  })
++    content.push(c)
++    last = c
++    return i + 1
+   }
+-})();
+ 
+-var math_noncomm = [
+-  "atan2",
+-  "pow"
+-]
+-;(function(){
+-  for(var i=0; i<math_noncomm.length; ++i) {
+-    var f= math_noncomm[i]
+-    exports[f+"op"] = makeOp({
+-                  args:["array", "array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
+-                  funcName: f+"op"
+-                })
+-    exports[f+"ops"] = makeOp({
+-                  args:["array", "array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
+-                  funcName: f+"ops"
+-                  })
+-    exports[f+"opeq"] = makeOp({ args:["array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
+-                  rvalue: true,
+-                  count: 2,
+-                  funcName: f+"opeq"
+-                  })
+-    exports[f+"opseq"] = makeOp({ args:["array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
+-                  rvalue:true,
+-                  count:2,
+-                  funcName: f+"opseq"
+-                  })
+-  }
+-})();
++  function decimal() {
++    if(c === 'f') {
++      content.push(c)
++      last = c
++      i += 1
++    }
+ 
+-exports.any = compile({
+-  args:["array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "if(a){return true}", localVars: [], thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return false"},
+-  funcName: "any"
+-})
++    if(/[eE]/.test(c)) {
++      content.push(c)
++      last = c
++      return i + 1
++    }
+ 
+-exports.all = compile({
+-  args:["array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1}], body: "if(!x){return false}", localVars: [], thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return true"},
+-  funcName: "all"
+-})
++    if (c === '-' && /[eE]/.test(last)) {
++      content.push(c)
++      last = c
++      return i + 1
++    }
+ 
+-exports.sum = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s+=a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "sum"
+-})
++    if(/[^\d]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
+ 
+-exports.prod = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=1"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s*=a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "prod"
+-})
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-exports.norm2squared = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norm2squared"
+-})
+-  
+-exports.norm2 = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return Math.sqrt(this_s)"},
+-  funcName: "norm2"
+-})
+-  
++  function readtoken() {
++    if(/[^\d\w_]/.test(c)) {
++      var contentstr = content.join('')
++      if(allLiterals.indexOf(contentstr) > -1) {
++        mode = KEYWORD
++      } else if(allBuiltins.indexOf(contentstr) > -1) {
++        mode = BUILTIN
++      } else {
++        mode = IDENT
++      }
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
++    content.push(c)
++    last = c
++    return i + 1
++  }
++}
+ 
+-exports.norminf = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:4}], body:"if(-a>this_s){this_s=-a}else if(a>this_s){this_s=a}", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norminf"
+-})
++},{"./lib/builtins":108,"./lib/builtins-300es":107,"./lib/literals":110,"./lib/literals-300es":109,"./lib/operators":111}],107:[function(require,module,exports){
++// 300es builtins/reserved words that were previously valid in v100
++var v100 = require('./builtins')
+ 
+-exports.norm1 = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:3}], body: "this_s+=a<0?-a:a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norm1"
++// The texture2D|Cube functions have been removed
++// And the gl_ features are updated
++v100 = v100.slice().filter(function (b) {
++  return !/^(gl\_|texture)/.test(b)
+ })
+ 
+-exports.sup = compile({
+-  args: [ "array" ],
+-  pre:
+-   { body: "this_h=-Infinity",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  body:
+-   { body: "if(_inline_1_arg0_>this_h)this_h=_inline_1_arg0_",
+-     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  post:
+-   { body: "return this_h",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] }
+- })
++module.exports = v100.concat([
++  // the updated gl_ constants
++    'gl_VertexID'
++  , 'gl_InstanceID'
++  , 'gl_Position'
++  , 'gl_PointSize'
++  , 'gl_FragCoord'
++  , 'gl_FrontFacing'
++  , 'gl_FragDepth'
++  , 'gl_PointCoord'
++  , 'gl_MaxVertexAttribs'
++  , 'gl_MaxVertexUniformVectors'
++  , 'gl_MaxVertexOutputVectors'
++  , 'gl_MaxFragmentInputVectors'
++  , 'gl_MaxVertexTextureImageUnits'
++  , 'gl_MaxCombinedTextureImageUnits'
++  , 'gl_MaxTextureImageUnits'
++  , 'gl_MaxFragmentUniformVectors'
++  , 'gl_MaxDrawBuffers'
++  , 'gl_MinProgramTexelOffset'
++  , 'gl_MaxProgramTexelOffset'
++  , 'gl_DepthRangeParameters'
++  , 'gl_DepthRange'
+ 
+-exports.inf = compile({
+-  args: [ "array" ],
+-  pre:
+-   { body: "this_h=Infinity",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  body:
+-   { body: "if(_inline_1_arg0_<this_h)this_h=_inline_1_arg0_",
+-     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  post:
+-   { body: "return this_h",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] }
+- })
++  // other builtins
++  , 'trunc'
++  , 'round'
++  , 'roundEven'
++  , 'isnan'
++  , 'isinf'
++  , 'floatBitsToInt'
++  , 'floatBitsToUint'
++  , 'intBitsToFloat'
++  , 'uintBitsToFloat'
++  , 'packSnorm2x16'
++  , 'unpackSnorm2x16'
++  , 'packUnorm2x16'
++  , 'unpackUnorm2x16'
++  , 'packHalf2x16'
++  , 'unpackHalf2x16'
++  , 'outerProduct'
++  , 'transpose'
++  , 'determinant'
++  , 'inverse'
++  , 'texture'
++  , 'textureSize'
++  , 'textureProj'
++  , 'textureLod'
++  , 'textureOffset'
++  , 'texelFetch'
++  , 'texelFetchOffset'
++  , 'textureProjOffset'
++  , 'textureLodOffset'
++  , 'textureProjLod'
++  , 'textureProjLodOffset'
++  , 'textureGrad'
++  , 'textureGradOffset'
++  , 'textureProjGrad'
++  , 'textureProjGradOffset'
++])
+ 
+-exports.argmin = compile({
+-  args:["index","array","shape"],
+-  pre:{
+-    body:"{this_v=Infinity;this_i=_inline_0_arg2_.slice(0)}",
+-    args:[
+-      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
+-      ],
+-    thisVars:["this_i","this_v"],
+-    localVars:[]},
+-  body:{
+-    body:"{if(_inline_1_arg1_<this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
+-    args:[
+-      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
+-      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
+-    thisVars:["this_i","this_v"],
+-    localVars:["_inline_1_k"]},
+-  post:{
+-    body:"{return this_i}",
+-    args:[],
+-    thisVars:["this_i"],
+-    localVars:[]}
+-})
++},{"./builtins":108}],108:[function(require,module,exports){
++module.exports = [
++  // Keep this list sorted
++  'abs'
++  , 'acos'
++  , 'all'
++  , 'any'
++  , 'asin'
++  , 'atan'
++  , 'ceil'
++  , 'clamp'
++  , 'cos'
++  , 'cross'
++  , 'dFdx'
++  , 'dFdy'
++  , 'degrees'
++  , 'distance'
++  , 'dot'
++  , 'equal'
++  , 'exp'
++  , 'exp2'
++  , 'faceforward'
++  , 'floor'
++  , 'fract'
++  , 'gl_BackColor'
++  , 'gl_BackLightModelProduct'
++  , 'gl_BackLightProduct'
++  , 'gl_BackMaterial'
++  , 'gl_BackSecondaryColor'
++  , 'gl_ClipPlane'
++  , 'gl_ClipVertex'
++  , 'gl_Color'
++  , 'gl_DepthRange'
++  , 'gl_DepthRangeParameters'
++  , 'gl_EyePlaneQ'
++  , 'gl_EyePlaneR'
++  , 'gl_EyePlaneS'
++  , 'gl_EyePlaneT'
++  , 'gl_Fog'
++  , 'gl_FogCoord'
++  , 'gl_FogFragCoord'
++  , 'gl_FogParameters'
++  , 'gl_FragColor'
++  , 'gl_FragCoord'
++  , 'gl_FragData'
++  , 'gl_FragDepth'
++  , 'gl_FragDepthEXT'
++  , 'gl_FrontColor'
++  , 'gl_FrontFacing'
++  , 'gl_FrontLightModelProduct'
++  , 'gl_FrontLightProduct'
++  , 'gl_FrontMaterial'
++  , 'gl_FrontSecondaryColor'
++  , 'gl_LightModel'
++  , 'gl_LightModelParameters'
++  , 'gl_LightModelProducts'
++  , 'gl_LightProducts'
++  , 'gl_LightSource'
++  , 'gl_LightSourceParameters'
++  , 'gl_MaterialParameters'
++  , 'gl_MaxClipPlanes'
++  , 'gl_MaxCombinedTextureImageUnits'
++  , 'gl_MaxDrawBuffers'
++  , 'gl_MaxFragmentUniformComponents'
++  , 'gl_MaxLights'
++  , 'gl_MaxTextureCoords'
++  , 'gl_MaxTextureImageUnits'
++  , 'gl_MaxTextureUnits'
++  , 'gl_MaxVaryingFloats'
++  , 'gl_MaxVertexAttribs'
++  , 'gl_MaxVertexTextureImageUnits'
++  , 'gl_MaxVertexUniformComponents'
++  , 'gl_ModelViewMatrix'
++  , 'gl_ModelViewMatrixInverse'
++  , 'gl_ModelViewMatrixInverseTranspose'
++  , 'gl_ModelViewMatrixTranspose'
++  , 'gl_ModelViewProjectionMatrix'
++  , 'gl_ModelViewProjectionMatrixInverse'
++  , 'gl_ModelViewProjectionMatrixInverseTranspose'
++  , 'gl_ModelViewProjectionMatrixTranspose'
++  , 'gl_MultiTexCoord0'
++  , 'gl_MultiTexCoord1'
++  , 'gl_MultiTexCoord2'
++  , 'gl_MultiTexCoord3'
++  , 'gl_MultiTexCoord4'
++  , 'gl_MultiTexCoord5'
++  , 'gl_MultiTexCoord6'
++  , 'gl_MultiTexCoord7'
++  , 'gl_Normal'
++  , 'gl_NormalMatrix'
++  , 'gl_NormalScale'
++  , 'gl_ObjectPlaneQ'
++  , 'gl_ObjectPlaneR'
++  , 'gl_ObjectPlaneS'
++  , 'gl_ObjectPlaneT'
++  , 'gl_Point'
++  , 'gl_PointCoord'
++  , 'gl_PointParameters'
++  , 'gl_PointSize'
++  , 'gl_Position'
++  , 'gl_ProjectionMatrix'
++  , 'gl_ProjectionMatrixInverse'
++  , 'gl_ProjectionMatrixInverseTranspose'
++  , 'gl_ProjectionMatrixTranspose'
++  , 'gl_SecondaryColor'
++  , 'gl_TexCoord'
++  , 'gl_TextureEnvColor'
++  , 'gl_TextureMatrix'
++  , 'gl_TextureMatrixInverse'
++  , 'gl_TextureMatrixInverseTranspose'
++  , 'gl_TextureMatrixTranspose'
++  , 'gl_Vertex'
++  , 'greaterThan'
++  , 'greaterThanEqual'
++  , 'inversesqrt'
++  , 'length'
++  , 'lessThan'
++  , 'lessThanEqual'
++  , 'log'
++  , 'log2'
++  , 'matrixCompMult'
++  , 'max'
++  , 'min'
++  , 'mix'
++  , 'mod'
++  , 'normalize'
++  , 'not'
++  , 'notEqual'
++  , 'pow'
++  , 'radians'
++  , 'reflect'
++  , 'refract'
++  , 'sign'
++  , 'sin'
++  , 'smoothstep'
++  , 'sqrt'
++  , 'step'
++  , 'tan'
++  , 'texture2D'
++  , 'texture2DLod'
++  , 'texture2DProj'
++  , 'texture2DProjLod'
++  , 'textureCube'
++  , 'textureCubeLod'
++  , 'texture2DLodEXT'
++  , 'texture2DProjLodEXT'
++  , 'textureCubeLodEXT'
++  , 'texture2DGradEXT'
++  , 'texture2DProjGradEXT'
++  , 'textureCubeGradEXT'
++]
+ 
+-exports.argmax = compile({
+-  args:["index","array","shape"],
+-  pre:{
+-    body:"{this_v=-Infinity;this_i=_inline_0_arg2_.slice(0)}",
+-    args:[
+-      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
+-      ],
+-    thisVars:["this_i","this_v"],
+-    localVars:[]},
+-  body:{
+-    body:"{if(_inline_1_arg1_>this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
+-    args:[
+-      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
+-      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
+-    thisVars:["this_i","this_v"],
+-    localVars:["_inline_1_k"]},
+-  post:{
+-    body:"{return this_i}",
+-    args:[],
+-    thisVars:["this_i"],
+-    localVars:[]}
+-})  
++},{}],109:[function(require,module,exports){
++var v100 = require('./literals')
+ 
+-exports.random = makeOp({
+-  args: ["array"],
+-  pre: {args:[], body:"this_f=Math.random", thisVars:["this_f"]},
+-  body: {args: ["a"], body:"a=this_f()", thisVars:["this_f"]},
+-  funcName: "random"
+-})
++module.exports = v100.slice().concat([
++   'layout'
++  , 'centroid'
++  , 'smooth'
++  , 'case'
++  , 'mat2x2'
++  , 'mat2x3'
++  , 'mat2x4'
++  , 'mat3x2'
++  , 'mat3x3'
++  , 'mat3x4'
++  , 'mat4x2'
++  , 'mat4x3'
++  , 'mat4x4'
++  , 'uint'
++  , 'uvec2'
++  , 'uvec3'
++  , 'uvec4'
++  , 'samplerCubeShadow'
++  , 'sampler2DArray'
++  , 'sampler2DArrayShadow'
++  , 'isampler2D'
++  , 'isampler3D'
++  , 'isamplerCube'
++  , 'isampler2DArray'
++  , 'usampler2D'
++  , 'usampler3D'
++  , 'usamplerCube'
++  , 'usampler2DArray'
++  , 'coherent'
++  , 'restrict'
++  , 'readonly'
++  , 'writeonly'
++  , 'resource'
++  , 'atomic_uint'
++  , 'noperspective'
++  , 'patch'
++  , 'sample'
++  , 'subroutine'
++  , 'common'
++  , 'partition'
++  , 'active'
++  , 'filter'
++  , 'image1D'
++  , 'image2D'
++  , 'image3D'
++  , 'imageCube'
++  , 'iimage1D'
++  , 'iimage2D'
++  , 'iimage3D'
++  , 'iimageCube'
++  , 'uimage1D'
++  , 'uimage2D'
++  , 'uimage3D'
++  , 'uimageCube'
++  , 'image1DArray'
++  , 'image2DArray'
++  , 'iimage1DArray'
++  , 'iimage2DArray'
++  , 'uimage1DArray'
++  , 'uimage2DArray'
++  , 'image1DShadow'
++  , 'image2DShadow'
++  , 'image1DArrayShadow'
++  , 'image2DArrayShadow'
++  , 'imageBuffer'
++  , 'iimageBuffer'
++  , 'uimageBuffer'
++  , 'sampler1DArray'
++  , 'sampler1DArrayShadow'
++  , 'isampler1D'
++  , 'isampler1DArray'
++  , 'usampler1D'
++  , 'usampler1DArray'
++  , 'isampler2DRect'
++  , 'usampler2DRect'
++  , 'samplerBuffer'
++  , 'isamplerBuffer'
++  , 'usamplerBuffer'
++  , 'sampler2DMS'
++  , 'isampler2DMS'
++  , 'usampler2DMS'
++  , 'sampler2DMSArray'
++  , 'isampler2DMSArray'
++  , 'usampler2DMSArray'
++])
+ 
+-exports.assign = makeOp({
+-  args:["array", "array"],
+-  body: {args:["a", "b"], body:"a=b"},
+-  funcName: "assign" })
++},{"./literals":110}],110:[function(require,module,exports){
++module.exports = [
++  // current
++    'precision'
++  , 'highp'
++  , 'mediump'
++  , 'lowp'
++  , 'attribute'
++  , 'const'
++  , 'uniform'
++  , 'varying'
++  , 'break'
++  , 'continue'
++  , 'do'
++  , 'for'
++  , 'while'
++  , 'if'
++  , 'else'
++  , 'in'
++  , 'out'
++  , 'inout'
++  , 'float'
++  , 'int'
++  , 'void'
++  , 'bool'
++  , 'true'
++  , 'false'
++  , 'discard'
++  , 'return'
++  , 'mat2'
++  , 'mat3'
++  , 'mat4'
++  , 'vec2'
++  , 'vec3'
++  , 'vec4'
++  , 'ivec2'
++  , 'ivec3'
++  , 'ivec4'
++  , 'bvec2'
++  , 'bvec3'
++  , 'bvec4'
++  , 'sampler1D'
++  , 'sampler2D'
++  , 'sampler3D'
++  , 'samplerCube'
++  , 'sampler1DShadow'
++  , 'sampler2DShadow'
++  , 'struct'
+ 
+-exports.assigns = makeOp({
+-  args:["array", "scalar"],
+-  body: {args:["a", "b"], body:"a=b"},
+-  funcName: "assigns" })
++  // future
++  , 'asm'
++  , 'class'
++  , 'union'
++  , 'enum'
++  , 'typedef'
++  , 'template'
++  , 'this'
++  , 'packed'
++  , 'goto'
++  , 'switch'
++  , 'default'
++  , 'inline'
++  , 'noinline'
++  , 'volatile'
++  , 'public'
++  , 'static'
++  , 'extern'
++  , 'external'
++  , 'interface'
++  , 'long'
++  , 'short'
++  , 'double'
++  , 'half'
++  , 'fixed'
++  , 'unsigned'
++  , 'input'
++  , 'output'
++  , 'hvec2'
++  , 'hvec3'
++  , 'hvec4'
++  , 'dvec2'
++  , 'dvec3'
++  , 'dvec4'
++  , 'fvec2'
++  , 'fvec3'
++  , 'fvec4'
++  , 'sampler2DRect'
++  , 'sampler3DRect'
++  , 'sampler2DRectShadow'
++  , 'sizeof'
++  , 'cast'
++  , 'namespace'
++  , 'using'
++]
++
++},{}],111:[function(require,module,exports){
++module.exports = [
++    '<<='
++  , '>>='
++  , '++'
++  , '--'
++  , '<<'
++  , '>>'
++  , '<='
++  , '>='
++  , '=='
++  , '!='
++  , '&&'
++  , '||'
++  , '+='
++  , '-='
++  , '*='
++  , '/='
++  , '%='
++  , '&='
++  , '^^'
++  , '^='
++  , '|='
++  , '('
++  , ')'
++  , '['
++  , ']'
++  , '.'
++  , '!'
++  , '~'
++  , '*'
++  , '/'
++  , '%'
++  , '+'
++  , '-'
++  , '<'
++  , '>'
++  , '&'
++  , '^'
++  , '|'
++  , '?'
++  , ':'
++  , '='
++  , ','
++  , ';'
++  , '{'
++  , '}'
++]
+ 
++},{}],112:[function(require,module,exports){
++var tokenize = require('./index')
+ 
+-exports.equals = compile({
+-  args:["array", "array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1},
+-               {name:"y", lvalue:false, rvalue:true, count:1}], 
+-        body: "if(x!==y){return false}", 
+-        localVars: [], 
+-        thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return true"},
+-  funcName: "equals"
+-})
++module.exports = tokenizeString
+ 
++function tokenizeString(str, opt) {
++  var generator = tokenize(opt)
++  var tokens = []
+ 
++  tokens = tokens.concat(generator(str))
++  tokens = tokens.concat(generator(null))
+ 
+-},{"cwise-compiler":58}],131:[function(require,module,exports){
+-var iota = require("iota-array")
+-var isBuffer = require("is-buffer")
++  return tokens
++}
+ 
+-var hasTypedArrays  = ((typeof Float64Array) !== "undefined")
++},{"./index":106}],113:[function(require,module,exports){
++exports.read = function (buffer, offset, isLE, mLen, nBytes) {
++  var e, m
++  var eLen = nBytes * 8 - mLen - 1
++  var eMax = (1 << eLen) - 1
++  var eBias = eMax >> 1
++  var nBits = -7
++  var i = isLE ? (nBytes - 1) : 0
++  var d = isLE ? -1 : 1
++  var s = buffer[offset + i]
+ 
+-function compare1st(a, b) {
+-  return a[0] - b[0]
+-}
++  i += d
+ 
+-function order() {
+-  var stride = this.stride
+-  var terms = new Array(stride.length)
+-  var i
+-  for(i=0; i<terms.length; ++i) {
+-    terms[i] = [Math.abs(stride[i]), i]
+-  }
+-  terms.sort(compare1st)
+-  var result = new Array(terms.length)
+-  for(i=0; i<result.length; ++i) {
+-    result[i] = terms[i][1]
+-  }
+-  return result
+-}
++  e = s & ((1 << (-nBits)) - 1)
++  s >>= (-nBits)
++  nBits += eLen
++  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+ 
+-function compileConstructor(dtype, dimension) {
+-  var className = ["View", dimension, "d", dtype].join("")
+-  if(dimension < 0) {
+-    className = "View_Nil" + dtype
+-  }
+-  var useGetters = (dtype === "generic")
++  m = e & ((1 << (-nBits)) - 1)
++  e >>= (-nBits)
++  nBits += mLen
++  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+ 
+-  if(dimension === -1) {
+-    //Special case for trivial arrays
+-    var code =
+-      "function "+className+"(a){this.data=a;};\
+-var proto="+className+".prototype;\
+-proto.dtype='"+dtype+"';\
+-proto.index=function(){return -1};\
+-proto.size=0;\
+-proto.dimension=-1;\
+-proto.shape=proto.stride=proto.order=[];\
+-proto.lo=proto.hi=proto.transpose=proto.step=\
+-function(){return new "+className+"(this.data);};\
+-proto.get=proto.set=function(){};\
+-proto.pick=function(){return null};\
+-return function construct_"+className+"(a){return new "+className+"(a);}"
+-    var procedure = new Function(code)
+-    return procedure()
+-  } else if(dimension === 0) {
+-    //Special case for 0d arrays
+-    var code =
+-      "function "+className+"(a,d) {\
+-this.data = a;\
+-this.offset = d\
+-};\
+-var proto="+className+".prototype;\
+-proto.dtype='"+dtype+"';\
+-proto.index=function(){return this.offset};\
+-proto.dimension=0;\
+-proto.size=1;\
+-proto.shape=\
+-proto.stride=\
+-proto.order=[];\
+-proto.lo=\
+-proto.hi=\
+-proto.transpose=\
+-proto.step=function "+className+"_copy() {\
+-return new "+className+"(this.data,this.offset)\
+-};\
+-proto.pick=function "+className+"_pick(){\
+-return TrivialArray(this.data);\
+-};\
+-proto.valueOf=proto.get=function "+className+"_get(){\
+-return "+(useGetters ? "this.data.get(this.offset)" : "this.data[this.offset]")+
+-"};\
+-proto.set=function "+className+"_set(v){\
+-return "+(useGetters ? "this.data.set(this.offset,v)" : "this.data[this.offset]=v")+"\
+-};\
+-return function construct_"+className+"(a,b,c,d){return new "+className+"(a,d)}"
+-    var procedure = new Function("TrivialArray", code)
+-    return procedure(CACHED_CONSTRUCTORS[dtype][0])
++  if (e === 0) {
++    e = 1 - eBias
++  } else if (e === eMax) {
++    return m ? NaN : ((s ? -1 : 1) * Infinity)
++  } else {
++    m = m + Math.pow(2, mLen)
++    e = e - eBias
+   }
++  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
++}
+ 
+-  var code = ["'use strict'"]
+-
+-  //Create constructor for view
+-  var indices = iota(dimension)
+-  var args = indices.map(function(i) { return "i"+i })
+-  var index_str = "this.offset+" + indices.map(function(i) {
+-        return "this.stride[" + i + "]*i" + i
+-      }).join("+")
+-  var shapeArg = indices.map(function(i) {
+-      return "b"+i
+-    }).join(",")
+-  var strideArg = indices.map(function(i) {
+-      return "c"+i
+-    }).join(",")
+-  code.push(
+-    "function "+className+"(a," + shapeArg + "," + strideArg + ",d){this.data=a",
+-      "this.shape=[" + shapeArg + "]",
+-      "this.stride=[" + strideArg + "]",
+-      "this.offset=d|0}",
+-    "var proto="+className+".prototype",
+-    "proto.dtype='"+dtype+"'",
+-    "proto.dimension="+dimension)
++exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
++  var e, m, c
++  var eLen = nBytes * 8 - mLen - 1
++  var eMax = (1 << eLen) - 1
++  var eBias = eMax >> 1
++  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
++  var i = isLE ? 0 : (nBytes - 1)
++  var d = isLE ? 1 : -1
++  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+ 
+-  //view.size:
+-  code.push("Object.defineProperty(proto,'size',{get:function "+className+"_size(){\
+-return "+indices.map(function(i) { return "this.shape["+i+"]" }).join("*"),
+-"}})")
++  value = Math.abs(value)
+ 
+-  //view.order:
+-  if(dimension === 1) {
+-    code.push("proto.order=[0]")
++  if (isNaN(value) || value === Infinity) {
++    m = isNaN(value) ? 1 : 0
++    e = eMax
+   } else {
+-    code.push("Object.defineProperty(proto,'order',{get:")
+-    if(dimension < 4) {
+-      code.push("function "+className+"_order(){")
+-      if(dimension === 2) {
+-        code.push("return (Math.abs(this.stride[0])>Math.abs(this.stride[1]))?[1,0]:[0,1]}})")
+-      } else if(dimension === 3) {
+-        code.push(
+-"var s0=Math.abs(this.stride[0]),s1=Math.abs(this.stride[1]),s2=Math.abs(this.stride[2]);\
+-if(s0>s1){\
+-if(s1>s2){\
+-return [2,1,0];\
+-}else if(s0>s2){\
+-return [1,2,0];\
+-}else{\
+-return [1,0,2];\
+-}\
+-}else if(s0>s2){\
+-return [2,0,1];\
+-}else if(s2>s1){\
+-return [0,1,2];\
+-}else{\
+-return [0,2,1];\
+-}}})")
+-      }
++    e = Math.floor(Math.log(value) / Math.LN2)
++    if (value * (c = Math.pow(2, -e)) < 1) {
++      e--
++      c *= 2
++    }
++    if (e + eBias >= 1) {
++      value += rt / c
+     } else {
+-      code.push("ORDER})")
++      value += rt * Math.pow(2, 1 - eBias)
++    }
++    if (value * c >= 2) {
++      e++
++      c /= 2
+     }
+-  }
+ 
+-  //view.set(i0, ..., v):
+-  code.push(
+-"proto.set=function "+className+"_set("+args.join(",")+",v){")
+-  if(useGetters) {
+-    code.push("return this.data.set("+index_str+",v)}")
+-  } else {
+-    code.push("return this.data["+index_str+"]=v}")
++    if (e + eBias >= eMax) {
++      m = 0
++      e = eMax
++    } else if (e + eBias >= 1) {
++      m = (value * c - 1) * Math.pow(2, mLen)
++      e = e + eBias
++    } else {
++      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
++      e = 0
++    }
+   }
+ 
+-  //view.get(i0, ...):
+-  code.push("proto.get=function "+className+"_get("+args.join(",")+"){")
+-  if(useGetters) {
+-    code.push("return this.data.get("+index_str+")}")
+-  } else {
+-    code.push("return this.data["+index_str+"]}")
+-  }
++  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+ 
+-  //view.index:
+-  code.push(
+-    "proto.index=function "+className+"_index(", args.join(), "){return "+index_str+"}")
++  e = (e << mLen) | m
++  eLen += mLen
++  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+ 
+-  //view.hi():
+-  code.push("proto.hi=function "+className+"_hi("+args.join(",")+"){return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return ["(typeof i",i,"!=='number'||i",i,"<0)?this.shape[", i, "]:i", i,"|0"].join("")
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "this.stride["+i + "]"
+-    }).join(",")+",this.offset)}")
++  buffer[offset + i - d] |= s * 128
++}
+ 
+-  //view.lo():
+-  var a_vars = indices.map(function(i) { return "a"+i+"=this.shape["+i+"]" })
+-  var c_vars = indices.map(function(i) { return "c"+i+"=this.stride["+i+"]" })
+-  code.push("proto.lo=function "+className+"_lo("+args.join(",")+"){var b=this.offset,d=0,"+a_vars.join(",")+","+c_vars.join(","))
+-  for(var i=0; i<dimension; ++i) {
+-    code.push(
+-"if(typeof i"+i+"==='number'&&i"+i+">=0){\
+-d=i"+i+"|0;\
+-b+=c"+i+"*d;\
+-a"+i+"-=d}")
+-  }
+-  code.push("return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return "a"+i
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "c"+i
+-    }).join(",")+",b)}")
++},{}],114:[function(require,module,exports){
++"use strict"
+ 
+-  //view.step():
+-  code.push("proto.step=function "+className+"_step("+args.join(",")+"){var "+
+-    indices.map(function(i) {
+-      return "a"+i+"=this.shape["+i+"]"
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "b"+i+"=this.stride["+i+"]"
+-    }).join(",")+",c=this.offset,d=0,ceil=Math.ceil")
+-  for(var i=0; i<dimension; ++i) {
+-    code.push(
+-"if(typeof i"+i+"==='number'){\
+-d=i"+i+"|0;\
+-if(d<0){\
+-c+=b"+i+"*(a"+i+"-1);\
+-a"+i+"=ceil(-a"+i+"/d)\
+-}else{\
+-a"+i+"=ceil(a"+i+"/d)\
+-}\
+-b"+i+"*=d\
+-}")
+-  }
+-  code.push("return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return "a" + i
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "b" + i
+-    }).join(",")+",c)}")
++var bounds = require("binary-search-bounds")
+ 
+-  //view.transpose():
+-  var tShape = new Array(dimension)
+-  var tStride = new Array(dimension)
+-  for(var i=0; i<dimension; ++i) {
+-    tShape[i] = "a[i"+i+"]"
+-    tStride[i] = "b[i"+i+"]"
+-  }
+-  code.push("proto.transpose=function "+className+"_transpose("+args+"){"+
+-    args.map(function(n,idx) { return n + "=(" + n + "===undefined?" + idx + ":" + n + "|0)"}).join(";"),
+-    "var a=this.shape,b=this.stride;return new "+className+"(this.data,"+tShape.join(",")+","+tStride.join(",")+",this.offset)}")
++var NOT_FOUND = 0
++var SUCCESS = 1
++var EMPTY = 2
+ 
+-  //view.pick():
+-  code.push("proto.pick=function "+className+"_pick("+args+"){var a=[],b=[],c=this.offset")
+-  for(var i=0; i<dimension; ++i) {
+-    code.push("if(typeof i"+i+"==='number'&&i"+i+">=0){c=(c+this.stride["+i+"]*i"+i+")|0}else{a.push(this.shape["+i+"]);b.push(this.stride["+i+"])}")
+-  }
+-  code.push("var ctor=CTOR_LIST[a.length+1];return ctor(this.data,a,b,c)}")
++module.exports = createWrapper
+ 
+-  //Add return statement
+-  code.push("return function construct_"+className+"(data,shape,stride,offset){return new "+className+"(data,"+
+-    indices.map(function(i) {
+-      return "shape["+i+"]"
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "stride["+i+"]"
+-    }).join(",")+",offset)}")
++function IntervalTreeNode(mid, left, right, leftPoints, rightPoints) {
++  this.mid = mid
++  this.left = left
++  this.right = right
++  this.leftPoints = leftPoints
++  this.rightPoints = rightPoints
++  this.count = (left ? left.count : 0) + (right ? right.count : 0) + leftPoints.length
++}
+ 
+-  //Compile procedure
+-  var procedure = new Function("CTOR_LIST", "ORDER", code.join("\n"))
+-  return procedure(CACHED_CONSTRUCTORS[dtype], order)
++var proto = IntervalTreeNode.prototype
++
++function copy(a, b) {
++  a.mid = b.mid
++  a.left = b.left
++  a.right = b.right
++  a.leftPoints = b.leftPoints
++  a.rightPoints = b.rightPoints
++  a.count = b.count
+ }
+ 
+-function arrayDType(data) {
+-  if(isBuffer(data)) {
+-    return "buffer"
+-  }
+-  if(hasTypedArrays) {
+-    switch(Object.prototype.toString.call(data)) {
+-      case "[object Float64Array]":
+-        return "float64"
+-      case "[object Float32Array]":
+-        return "float32"
+-      case "[object Int8Array]":
+-        return "int8"
+-      case "[object Int16Array]":
+-        return "int16"
+-      case "[object Int32Array]":
+-        return "int32"
+-      case "[object Uint8Array]":
+-        return "uint8"
+-      case "[object Uint16Array]":
+-        return "uint16"
+-      case "[object Uint32Array]":
+-        return "uint32"
+-      case "[object Uint8ClampedArray]":
+-        return "uint8_clamped"
+-    }
+-  }
+-  if(Array.isArray(data)) {
+-    return "array"
+-  }
+-  return "generic"
++function rebuild(node, intervals) {
++  var ntree = createIntervalTree(intervals)
++  node.mid = ntree.mid
++  node.left = ntree.left
++  node.right = ntree.right
++  node.leftPoints = ntree.leftPoints
++  node.rightPoints = ntree.rightPoints
++  node.count = ntree.count
+ }
+ 
+-var CACHED_CONSTRUCTORS = {
+-  "float32":[],
+-  "float64":[],
+-  "int8":[],
+-  "int16":[],
+-  "int32":[],
+-  "uint8":[],
+-  "uint16":[],
+-  "uint32":[],
+-  "array":[],
+-  "uint8_clamped":[],
+-  "buffer":[],
+-  "generic":[]
++function rebuildWithInterval(node, interval) {
++  var intervals = node.intervals([])
++  intervals.push(interval)
++  rebuild(node, intervals)    
+ }
+ 
+-;(function() {
+-  for(var id in CACHED_CONSTRUCTORS) {
+-    CACHED_CONSTRUCTORS[id].push(compileConstructor(id, -1))
++function rebuildWithoutInterval(node, interval) {
++  var intervals = node.intervals([])
++  var idx = intervals.indexOf(interval)
++  if(idx < 0) {
++    return NOT_FOUND
+   }
+-});
++  intervals.splice(idx, 1)
++  rebuild(node, intervals)
++  return SUCCESS
++}
+ 
+-function wrappedNDArrayCtor(data, shape, stride, offset) {
+-  if(data === undefined) {
+-    var ctor = CACHED_CONSTRUCTORS.array[0]
+-    return ctor([])
+-  } else if(typeof data === "number") {
+-    data = [data]
++proto.intervals = function(result) {
++  result.push.apply(result, this.leftPoints)
++  if(this.left) {
++    this.left.intervals(result)
+   }
+-  if(shape === undefined) {
+-    shape = [ data.length ]
++  if(this.right) {
++    this.right.intervals(result)
+   }
+-  var d = shape.length
+-  if(stride === undefined) {
+-    stride = new Array(d)
+-    for(var i=d-1, sz=1; i>=0; --i) {
+-      stride[i] = sz
+-      sz *= shape[i]
++  return result
++}
++
++proto.insert = function(interval) {
++  var weight = this.count - this.leftPoints.length
++  this.count += 1
++  if(interval[1] < this.mid) {
++    if(this.left) {
++      if(4*(this.left.count+1) > 3*(weight+1)) {
++        rebuildWithInterval(this, interval)
++      } else {
++        this.left.insert(interval)
++      }
++    } else {
++      this.left = createIntervalTree([interval])
++    }
++  } else if(interval[0] > this.mid) {
++    if(this.right) {
++      if(4*(this.right.count+1) > 3*(weight+1)) {
++        rebuildWithInterval(this, interval)
++      } else {
++        this.right.insert(interval)
++      }
++    } else {
++      this.right = createIntervalTree([interval])
++    }
++  } else {
++    var l = bounds.ge(this.leftPoints, interval, compareBegin)
++    var r = bounds.ge(this.rightPoints, interval, compareEnd)
++    this.leftPoints.splice(l, 0, interval)
++    this.rightPoints.splice(r, 0, interval)
++  }
++}
++
++proto.remove = function(interval) {
++  var weight = this.count - this.leftPoints
++  if(interval[1] < this.mid) {
++    if(!this.left) {
++      return NOT_FOUND
++    }
++    var rw = this.right ? this.right.count : 0
++    if(4 * rw > 3 * (weight-1)) {
++      return rebuildWithoutInterval(this, interval)
++    }
++    var r = this.left.remove(interval)
++    if(r === EMPTY) {
++      this.left = null
++      this.count -= 1
++      return SUCCESS
++    } else if(r === SUCCESS) {
++      this.count -= 1
++    }
++    return r
++  } else if(interval[0] > this.mid) {
++    if(!this.right) {
++      return NOT_FOUND
++    }
++    var lw = this.left ? this.left.count : 0
++    if(4 * lw > 3 * (weight-1)) {
++      return rebuildWithoutInterval(this, interval)
++    }
++    var r = this.right.remove(interval)
++    if(r === EMPTY) {
++      this.right = null
++      this.count -= 1
++      return SUCCESS
++    } else if(r === SUCCESS) {
++      this.count -= 1
++    }
++    return r
++  } else {
++    if(this.count === 1) {
++      if(this.leftPoints[0] === interval) {
++        return EMPTY
++      } else {
++        return NOT_FOUND
++      }
++    }
++    if(this.leftPoints.length === 1 && this.leftPoints[0] === interval) {
++      if(this.left && this.right) {
++        var p = this
++        var n = this.left
++        while(n.right) {
++          p = n
++          n = n.right
++        }
++        if(p === this) {
++          n.right = this.right
++        } else {
++          var l = this.left
++          var r = this.right
++          p.count -= n.count
++          p.right = n.left
++          n.left = l
++          n.right = r
++        }
++        copy(this, n)
++        this.count = (this.left?this.left.count:0) + (this.right?this.right.count:0) + this.leftPoints.length
++      } else if(this.left) {
++        copy(this, this.left)
++      } else {
++        copy(this, this.right)
++      }
++      return SUCCESS
+     }
+-  }
+-  if(offset === undefined) {
+-    offset = 0
+-    for(var i=0; i<d; ++i) {
+-      if(stride[i] < 0) {
+-        offset -= (shape[i]-1)*stride[i]
++    for(var l = bounds.ge(this.leftPoints, interval, compareBegin); l<this.leftPoints.length; ++l) {
++      if(this.leftPoints[l][0] !== interval[0]) {
++        break
++      }
++      if(this.leftPoints[l] === interval) {
++        this.count -= 1
++        this.leftPoints.splice(l, 1)
++        for(var r = bounds.ge(this.rightPoints, interval, compareEnd); r<this.rightPoints.length; ++r) {
++          if(this.rightPoints[r][1] !== interval[1]) {
++            break
++          } else if(this.rightPoints[r] === interval) {
++            this.rightPoints.splice(r, 1)
++            return SUCCESS
++          }
++        }
+       }
+     }
++    return NOT_FOUND
+   }
+-  var dtype = arrayDType(data)
+-  var ctor_list = CACHED_CONSTRUCTORS[dtype]
+-  while(ctor_list.length <= d+1) {
+-    ctor_list.push(compileConstructor(dtype, ctor_list.length-1))
+-  }
+-  var ctor = ctor_list[d+1]
+-  return ctor(data, shape, stride, offset)
+ }
+ 
+-module.exports = wrappedNDArrayCtor
+-
+-},{"iota-array":123,"is-buffer":124}],132:[function(require,module,exports){
+-/*!
+- * repeat-string <https://github.com/jonschlinkert/repeat-string>
+- *
+- * Copyright (c) 2014-2015, Jon Schlinkert.
+- * Licensed under the MIT License.
+- */
+-
+-'use strict';
+-
+-/**
+- * Results cache
+- */
+-
+-var res = '';
+-var cache;
+-
+-/**
+- * Expose `repeat`
+- */
+-
+-module.exports = repeat;
+-
+-/**
+- * Repeat the given `string` the specified `number`
+- * of times.
+- *
+- * **Example:**
+- *
+- * ```js
+- * var repeat = require('repeat-string');
+- * repeat('A', 5);
+- * //=> AAAAA
+- * ```
+- *
+- * @param {String} `string` The string to repeat
+- * @param {Number} `number` The number of times to repeat the string
+- * @return {String} Repeated string
+- * @api public
+- */
+-
+-function repeat(str, num) {
+-  if (typeof str !== 'string') {
+-    throw new TypeError('repeat-string expects a string.');
++function reportLeftRange(arr, hi, cb) {
++  for(var i=0; i<arr.length && arr[i][0] <= hi; ++i) {
++    var r = cb(arr[i])
++    if(r) { return r }
+   }
++}
+ 
+-  // cover common, quick use cases
+-  if (num === 1) return str;
+-  if (num === 2) return str + str;
++function reportRightRange(arr, lo, cb) {
++  for(var i=arr.length-1; i>=0 && arr[i][1] >= lo; --i) {
++    var r = cb(arr[i])
++    if(r) { return r }
++  }
++}
+ 
+-  var max = str.length * num;
+-  if (cache !== str || typeof cache === 'undefined') {
+-    cache = str;
+-    res = '';
++function reportRange(arr, cb) {
++  for(var i=0; i<arr.length; ++i) {
++    var r = cb(arr[i])
++    if(r) { return r }
+   }
++}
+ 
+-  while (max > res.length && num > 0) {
+-    if (num & 1) {
+-      res += str;
++proto.queryPoint = function(x, cb) {
++  if(x < this.mid) {
++    if(this.left) {
++      var r = this.left.queryPoint(x, cb)
++      if(r) { return r }
+     }
+-
+-    num >>= 1;
+-    if (!num) break;
+-    str += str;
++    return reportLeftRange(this.leftPoints, x, cb)
++  } else if(x > this.mid) {
++    if(this.right) {
++      var r = this.right.queryPoint(x, cb)
++      if(r) { return r }
++    }
++    return reportRightRange(this.rightPoints, x, cb)
++  } else {
++    return reportRange(this.leftPoints, cb)
+   }
++}
+ 
+-  return res.substr(0, max);
++proto.queryInterval = function(lo, hi, cb) {
++  if(lo < this.mid && this.left) {
++    var r = this.left.queryInterval(lo, hi, cb)
++    if(r) { return r }
++  }
++  if(hi > this.mid && this.right) {
++    var r = this.right.queryInterval(lo, hi, cb)
++    if(r) { return r }
++  }
++  if(hi < this.mid) {
++    return reportLeftRange(this.leftPoints, hi, cb)
++  } else if(lo > this.mid) {
++    return reportRightRange(this.rightPoints, lo, cb)
++  } else {
++    return reportRange(this.leftPoints, cb)
++  }
+ }
+ 
++function compareNumbers(a, b) {
++  return a - b
++}
+ 
+-},{}],133:[function(require,module,exports){
+-"use strict"
++function compareBegin(a, b) {
++  var d = a[0] - b[0]
++  if(d) { return d }
++  return a[1] - b[1]
++}
+ 
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
+-var robustScale = require("robust-scale")
+-var robustSubtract = require("robust-subtract")
++function compareEnd(a, b) {
++  var d = a[1] - b[1]
++  if(d) { return d }
++  return a[0] - b[0]
++}
+ 
+-var NUM_EXPAND = 5
++function createIntervalTree(intervals) {
++  if(intervals.length === 0) {
++    return null
++  }
++  var pts = []
++  for(var i=0; i<intervals.length; ++i) {
++    pts.push(intervals[i][0], intervals[i][1])
++  }
++  pts.sort(compareNumbers)
+ 
+-var EPSILON     = 1.1102230246251565e-16
+-var ERRBOUND3   = (3.0 + 16.0 * EPSILON) * EPSILON
+-var ERRBOUND4   = (7.0 + 56.0 * EPSILON) * EPSILON
++  var mid = pts[pts.length>>1]
+ 
+-function cofactor(m, c) {
+-  var result = new Array(m.length-1)
+-  for(var i=1; i<m.length; ++i) {
+-    var r = result[i-1] = new Array(m.length-1)
+-    for(var j=0,k=0; j<m.length; ++j) {
+-      if(j === c) {
+-        continue
+-      }
+-      r[k++] = m[i][j]
++  var leftIntervals = []
++  var rightIntervals = []
++  var centerIntervals = []
++  for(var i=0; i<intervals.length; ++i) {
++    var s = intervals[i]
++    if(s[1] < mid) {
++      leftIntervals.push(s)
++    } else if(mid < s[0]) {
++      rightIntervals.push(s)
++    } else {
++      centerIntervals.push(s)
+     }
+   }
+-  return result
+-}
+ 
+-function matrix(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = new Array(n)
+-    for(var j=0; j<n; ++j) {
+-      result[i][j] = ["m", j, "[", (n-i-1), "]"].join("")
+-    }
+-  }
+-  return result
++  //Split center intervals
++  var leftPoints = centerIntervals
++  var rightPoints = centerIntervals.slice()
++  leftPoints.sort(compareBegin)
++  rightPoints.sort(compareEnd)
++
++  return new IntervalTreeNode(mid, 
++    createIntervalTree(leftIntervals),
++    createIntervalTree(rightIntervals),
++    leftPoints,
++    rightPoints)
+ }
+ 
+-function sign(n) {
+-  if(n & 1) {
+-    return "-"
+-  }
+-  return ""
++//User friendly wrapper that makes it possible to support empty trees
++function IntervalTree(root) {
++  this.root = root
+ }
+ 
+-function generateSum(expr) {
+-  if(expr.length === 1) {
+-    return expr[0]
+-  } else if(expr.length === 2) {
+-    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++var tproto = IntervalTree.prototype
++
++tproto.insert = function(interval) {
++  if(this.root) {
++    this.root.insert(interval)
+   } else {
+-    var m = expr.length>>1
+-    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++    this.root = new IntervalTreeNode(interval[0], null, null, [interval], [interval])
+   }
+ }
+ 
+-function determinant(m) {
+-  if(m.length === 2) {
+-    return [["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")]
+-  } else {
+-    var expr = []
+-    for(var i=0; i<m.length; ++i) {
+-      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
++tproto.remove = function(interval) {
++  if(this.root) {
++    var r = this.root.remove(interval)
++    if(r === EMPTY) {
++      this.root = null
+     }
+-    return expr
++    return r !== NOT_FOUND
+   }
++  return false
+ }
+ 
+-function orientation(n) {
+-  var pos = []
+-  var neg = []
+-  var m = matrix(n)
+-  var args = []
+-  for(var i=0; i<n; ++i) {
+-    if((i&1)===0) {
+-      pos.push.apply(pos, determinant(cofactor(m, i)))
+-    } else {
+-      neg.push.apply(neg, determinant(cofactor(m, i)))
+-    }
+-    args.push("m" + i)
++tproto.queryPoint = function(p, cb) {
++  if(this.root) {
++    return this.root.queryPoint(p, cb)
+   }
+-  var posExpr = generateSum(pos)
+-  var negExpr = generateSum(neg)
+-  var funcName = "orientation" + n + "Exact"
+-  var code = ["function ", funcName, "(", args.join(), "){var p=", posExpr, ",n=", negExpr, ",d=sub(p,n);\
+-return d[d.length-1];};return ", funcName].join("")
+-  var proc = new Function("sum", "prod", "scale", "sub", code)
+-  return proc(robustSum, twoProduct, robustScale, robustSubtract)
+ }
+ 
+-var orientation3Exact = orientation(3)
+-var orientation4Exact = orientation(4)
++tproto.queryInterval = function(lo, hi, cb) {
++  if(lo <= hi && this.root) {
++    return this.root.queryInterval(lo, hi, cb)
++  }
++}
+ 
+-var CACHED = [
+-  function orientation0() { return 0 },
+-  function orientation1() { return 0 },
+-  function orientation2(a, b) { 
+-    return b[0] - a[0]
+-  },
+-  function orientation3(a, b, c) {
+-    var l = (a[1] - c[1]) * (b[0] - c[0])
+-    var r = (a[0] - c[0]) * (b[1] - c[1])
+-    var det = l - r
+-    var s
+-    if(l > 0) {
+-      if(r <= 0) {
+-        return det
+-      } else {
+-        s = l + r
+-      }
+-    } else if(l < 0) {
+-      if(r >= 0) {
+-        return det
+-      } else {
+-        s = -(l + r)
+-      }
+-    } else {
+-      return det
+-    }
+-    var tol = ERRBOUND3 * s
+-    if(det >= tol || det <= -tol) {
+-      return det
++Object.defineProperty(tproto, "count", {
++  get: function() {
++    if(this.root) {
++      return this.root.count
+     }
+-    return orientation3Exact(a, b, c)
+-  },
+-  function orientation4(a,b,c,d) {
+-    var adx = a[0] - d[0]
+-    var bdx = b[0] - d[0]
+-    var cdx = c[0] - d[0]
+-    var ady = a[1] - d[1]
+-    var bdy = b[1] - d[1]
+-    var cdy = c[1] - d[1]
+-    var adz = a[2] - d[2]
+-    var bdz = b[2] - d[2]
+-    var cdz = c[2] - d[2]
+-    var bdxcdy = bdx * cdy
+-    var cdxbdy = cdx * bdy
+-    var cdxady = cdx * ady
+-    var adxcdy = adx * cdy
+-    var adxbdy = adx * bdy
+-    var bdxady = bdx * ady
+-    var det = adz * (bdxcdy - cdxbdy) 
+-            + bdz * (cdxady - adxcdy)
+-            + cdz * (adxbdy - bdxady)
+-    var permanent = (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * Math.abs(adz)
+-                  + (Math.abs(cdxady) + Math.abs(adxcdy)) * Math.abs(bdz)
+-                  + (Math.abs(adxbdy) + Math.abs(bdxady)) * Math.abs(cdz)
+-    var tol = ERRBOUND4 * permanent
+-    if ((det > tol) || (-det > tol)) {
+-      return det
++    return 0
++  }
++})
++
++Object.defineProperty(tproto, "intervals", {
++  get: function() {
++    if(this.root) {
++      return this.root.intervals([])
+     }
+-    return orientation4Exact(a,b,c,d)
++    return []
+   }
+-]
++})
+ 
+-function slowOrient(args) {
+-  var proc = CACHED[args.length]
+-  if(!proc) {
+-    proc = CACHED[args.length] = orientation(args.length)
++function createWrapper(intervals) {
++  if(!intervals || intervals.length === 0) {
++    return new IntervalTree(null)
+   }
+-  return proc.apply(undefined, args)
++  return new IntervalTree(createIntervalTree(intervals))
+ }
+ 
+-function generateOrientationProc() {
+-  while(CACHED.length <= NUM_EXPAND) {
+-    CACHED.push(orientation(CACHED.length))
+-  }
+-  var args = []
+-  var procArgs = ["slow"]
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    args.push("a" + i)
+-    procArgs.push("o" + i)
+-  }
+-  var code = [
+-    "function getOrientation(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
+-  ]
+-  for(var i=2; i<=NUM_EXPAND; ++i) {
+-    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
+-  }
+-  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return getOrientation")
+-  procArgs.push(code.join(""))
++},{"binary-search-bounds":27}],115:[function(require,module,exports){
++"use strict"
+ 
+-  var proc = Function.apply(undefined, procArgs)
+-  module.exports = proc.apply(undefined, [slowOrient].concat(CACHED))
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    module.exports[i] = CACHED[i]
++function invertPermutation(pi, result) {
++  result = result || new Array(pi.length)
++  for(var i=0; i<pi.length; ++i) {
++    result[pi[i]] = i
+   }
++  return result
+ }
+ 
+-generateOrientationProc()
+-},{"robust-scale":134,"robust-subtract":135,"robust-sum":136,"two-product":149}],134:[function(require,module,exports){
++module.exports = invertPermutation
++},{}],116:[function(require,module,exports){
+ "use strict"
+ 
+-var twoProduct = require("two-product")
+-var twoSum = require("two-sum")
++function iota(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = i
++  }
++  return result
++}
+ 
+-module.exports = scaleLinearExpansion
++module.exports = iota
++},{}],117:[function(require,module,exports){
++/*!
++ * Determine if an object is a Buffer
++ *
++ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
++ * @license  MIT
++ */
+ 
+-function scaleLinearExpansion(e, scale) {
+-  var n = e.length
+-  if(n === 1) {
+-    var ts = twoProduct(e[0], scale)
+-    if(ts[0]) {
+-      return ts
+-    }
+-    return [ ts[1] ]
+-  }
+-  var g = new Array(2 * n)
+-  var q = [0.1, 0.1]
+-  var t = [0.1, 0.1]
+-  var count = 0
+-  twoProduct(e[0], scale, q)
+-  if(q[0]) {
+-    g[count++] = q[0]
+-  }
+-  for(var i=1; i<n; ++i) {
+-    twoProduct(e[i], scale, t)
+-    var pq = q[1]
+-    twoSum(pq, t[0], q)
+-    if(q[0]) {
+-      g[count++] = q[0]
+-    }
+-    var a = t[1]
+-    var b = q[1]
+-    var x = a + b
+-    var bv = x - a
+-    var y = b - bv
+-    q[1] = x
+-    if(y) {
+-      g[count++] = y
+-    }
+-  }
+-  if(q[1]) {
+-    g[count++] = q[1]
+-  }
+-  if(count === 0) {
+-    g[count++] = 0.0
+-  }
+-  g.length = count
+-  return g
++// The _isBuffer check is for Safari 5-7 support, because it's missing
++// Object.prototype.constructor. Remove this eventually
++module.exports = function (obj) {
++  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
+ }
+-},{"two-product":149,"two-sum":150}],135:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = robustSubtract
++function isBuffer (obj) {
++  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
++}
+ 
+-//Easy case: Add two scalars
+-function scalarScalar(a, b) {
+-  var x = a + b
+-  var bv = x - a
+-  var av = x - bv
+-  var br = b - bv
+-  var ar = a - av
+-  var y = ar + br
+-  if(y) {
+-    return [y, x]
+-  }
+-  return [x]
++// For Node v0.10 support. Remove this eventually.
++function isSlowBuffer (obj) {
++  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
+ }
+ 
+-function robustSubtract(e, f) {
+-  var ne = e.length|0
+-  var nf = f.length|0
+-  if(ne === 1 && nf === 1) {
+-    return scalarScalar(e[0], -f[0])
++},{}],118:[function(require,module,exports){
++'use strict'
++
++module.exports = mouseListen
++
++var mouse = require('mouse-event')
++
++function mouseListen(element, callback) {
++  if(!callback) {
++    callback = element
++    element = window
+   }
+-  var n = ne + nf
+-  var g = new Array(n)
+-  var count = 0
+-  var eptr = 0
+-  var fptr = 0
+-  var abs = Math.abs
+-  var ei = e[eptr]
+-  var ea = abs(ei)
+-  var fi = -f[fptr]
+-  var fa = abs(fi)
+-  var a, b
+-  if(ea < fa) {
+-    b = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
+-  } else {
+-    b = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
+-      fa = abs(fi)
+-    }
++
++  var buttonState = 0
++  var x = 0
++  var y = 0
++  var mods = {
++    shift:   false,
++    alt:     false,
++    control: false,
++    meta:    false
+   }
+-  if((eptr < ne && ea < fa) || (fptr >= nf)) {
+-    a = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
++  var attached = false
++
++  function updateMods(ev) {
++    var changed = false
++    if('altKey' in ev) {
++      changed = changed || ev.altKey !== mods.alt
++      mods.alt = !!ev.altKey
+     }
+-  } else {
+-    a = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
+-      fa = abs(fi)
++    if('shiftKey' in ev) {
++      changed = changed || ev.shiftKey !== mods.shift
++      mods.shift = !!ev.shiftKey
+     }
+-  }
+-  var x = a + b
+-  var bv = x - a
+-  var y = b - bv
+-  var q0 = y
+-  var q1 = x
+-  var _x, _bv, _av, _br, _ar
+-  while(eptr < ne && fptr < nf) {
+-    if(ea < fa) {
+-      a = ei
+-      eptr += 1
+-      if(eptr < ne) {
+-        ei = e[eptr]
+-        ea = abs(ei)
+-      }
+-    } else {
+-      a = fi
+-      fptr += 1
+-      if(fptr < nf) {
+-        fi = -f[fptr]
+-        fa = abs(fi)
+-      }
++    if('ctrlKey' in ev) {
++      changed = changed || ev.ctrlKey !== mods.control
++      mods.control = !!ev.ctrlKey
+     }
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
++    if('metaKey' in ev) {
++      changed = changed || ev.metaKey !== mods.meta
++      mods.meta = !!ev.metaKey
+     }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
++    return changed
+   }
+-  while(eptr < ne) {
+-    a = ei
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
++
++  function handleEvent(nextButtons, ev) {
++    var nextX = mouse.x(ev)
++    var nextY = mouse.y(ev)
++    if('buttons' in ev) {
++      nextButtons = ev.buttons|0
+     }
+-  }
+-  while(fptr < nf) {
+-    a = fi
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    } 
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
++    if(nextButtons !== buttonState ||
++       nextX !== x ||
++       nextY !== y ||
++       updateMods(ev)) {
++      buttonState = nextButtons|0
++      x = nextX||0
++      y = nextY||0
++      callback && callback(buttonState, x, y, mods)
+     }
+   }
+-  if(q0) {
+-    g[count++] = q0
++
++  function clearState(ev) {
++    handleEvent(0, ev)
+   }
+-  if(q1) {
+-    g[count++] = q1
++
++  function handleBlur() {
++    if(buttonState ||
++      x ||
++      y ||
++      mods.shift ||
++      mods.alt ||
++      mods.meta ||
++      mods.control) {
++
++      x = y = 0
++      buttonState = 0
++      mods.shift = mods.alt = mods.control = mods.meta = false
++      callback && callback(0, 0, 0, mods)
++    }
+   }
+-  if(!count) {
+-    g[count++] = 0.0  
++
++  function handleMods(ev) {
++    if(updateMods(ev)) {
++      callback && callback(buttonState, x, y, mods)
++    }
+   }
+-  g.length = count
+-  return g
+-}
+-},{}],136:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = linearExpansionSum
++  function handleMouseMove(ev) {
++    if(mouse.buttons(ev) === 0) {
++      handleEvent(0, ev)
++    } else {
++      handleEvent(buttonState, ev)
++    }
++  }
+ 
+-//Easy case: Add two scalars
+-function scalarScalar(a, b) {
+-  var x = a + b
+-  var bv = x - a
+-  var av = x - bv
+-  var br = b - bv
+-  var ar = a - av
+-  var y = ar + br
+-  if(y) {
+-    return [y, x]
++  function handleMouseDown(ev) {
++    handleEvent(buttonState | mouse.buttons(ev), ev)
+   }
+-  return [x]
+-}
+ 
+-function linearExpansionSum(e, f) {
+-  var ne = e.length|0
+-  var nf = f.length|0
+-  if(ne === 1 && nf === 1) {
+-    return scalarScalar(e[0], f[0])
++  function handleMouseUp(ev) {
++    handleEvent(buttonState & ~mouse.buttons(ev), ev)
+   }
+-  var n = ne + nf
+-  var g = new Array(n)
+-  var count = 0
+-  var eptr = 0
+-  var fptr = 0
+-  var abs = Math.abs
+-  var ei = e[eptr]
+-  var ea = abs(ei)
+-  var fi = f[fptr]
+-  var fa = abs(fi)
+-  var a, b
+-  if(ea < fa) {
+-    b = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
++
++  function attachListeners() {
++    if(attached) {
++      return
+     }
+-  } else {
+-    b = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
+-      fa = abs(fi)
++    attached = true
++
++    element.addEventListener('mousemove', handleMouseMove)
++
++    element.addEventListener('mousedown', handleMouseDown)
++
++    element.addEventListener('mouseup', handleMouseUp)
++
++    element.addEventListener('mouseleave', clearState)
++    element.addEventListener('mouseenter', clearState)
++    element.addEventListener('mouseout', clearState)
++    element.addEventListener('mouseover', clearState)
++
++    element.addEventListener('blur', handleBlur)
++
++    element.addEventListener('keyup', handleMods)
++    element.addEventListener('keydown', handleMods)
++    element.addEventListener('keypress', handleMods)
++
++    if(element !== window) {
++      window.addEventListener('blur', handleBlur)
++
++      window.addEventListener('keyup', handleMods)
++      window.addEventListener('keydown', handleMods)
++      window.addEventListener('keypress', handleMods)
+     }
+   }
+-  if((eptr < ne && ea < fa) || (fptr >= nf)) {
+-    a = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
++
++  function detachListeners() {
++    if(!attached) {
++      return
+     }
+-  } else {
+-    a = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
+-      fa = abs(fi)
++    attached = false
++
++    element.removeEventListener('mousemove', handleMouseMove)
++
++    element.removeEventListener('mousedown', handleMouseDown)
++
++    element.removeEventListener('mouseup', handleMouseUp)
++
++    element.removeEventListener('mouseleave', clearState)
++    element.removeEventListener('mouseenter', clearState)
++    element.removeEventListener('mouseout', clearState)
++    element.removeEventListener('mouseover', clearState)
++
++    element.removeEventListener('blur', handleBlur)
++
++    element.removeEventListener('keyup', handleMods)
++    element.removeEventListener('keydown', handleMods)
++    element.removeEventListener('keypress', handleMods)
++
++    if(element !== window) {
++      window.removeEventListener('blur', handleBlur)
++
++      window.removeEventListener('keyup', handleMods)
++      window.removeEventListener('keydown', handleMods)
++      window.removeEventListener('keypress', handleMods)
+     }
+   }
+-  var x = a + b
+-  var bv = x - a
+-  var y = b - bv
+-  var q0 = y
+-  var q1 = x
+-  var _x, _bv, _av, _br, _ar
+-  while(eptr < ne && fptr < nf) {
+-    if(ea < fa) {
+-      a = ei
+-      eptr += 1
+-      if(eptr < ne) {
+-        ei = e[eptr]
+-        ea = abs(ei)
++
++  //Attach listeners
++  attachListeners()
++
++  var result = {
++    element: element
++  }
++
++  Object.defineProperties(result, {
++    enabled: {
++      get: function() { return attached },
++      set: function(f) {
++        if(f) {
++          attachListeners()
++        } else {
++          detachListeners
++        }
++      },
++      enumerable: true
++    },
++    buttons: {
++      get: function() { return buttonState },
++      enumerable: true
++    },
++    x: {
++      get: function() { return x },
++      enumerable: true
++    },
++    y: {
++      get: function() { return y },
++      enumerable: true
++    },
++    mods: {
++      get: function() { return mods },
++      enumerable: true
++    }
++  })
++
++  return result
++}
++
++},{"mouse-event":119}],119:[function(require,module,exports){
++'use strict'
++
++function mouseButtons(ev) {
++  if(typeof ev === 'object') {
++    if('buttons' in ev) {
++      return ev.buttons
++    } else if('which' in ev) {
++      var b = ev.which
++      if(b === 2) {
++        return 4
++      } else if(b === 3) {
++        return 2
++      } else if(b > 0) {
++        return 1<<(b-1)
+       }
+-    } else {
+-      a = fi
+-      fptr += 1
+-      if(fptr < nf) {
+-        fi = f[fptr]
+-        fa = abs(fi)
++    } else if('button' in ev) {
++      var b = ev.button
++      if(b === 1) {
++        return 4
++      } else if(b === 2) {
++        return 2
++      } else if(b >= 0) {
++        return 1<<b
+       }
+     }
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+   }
+-  while(eptr < ne) {
+-    a = ei
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
++  return 0
++}
++exports.buttons = mouseButtons
++
++function mouseElement(ev) {
++  return ev.target || ev.srcElement || window
++}
++exports.element = mouseElement
++
++function mouseRelativeX(ev) {
++  if(typeof ev === 'object') {
++    if('offsetX' in ev) {
++      return ev.offsetX
+     }
++    var target = mouseElement(ev)
++    var bounds = target.getBoundingClientRect()
++    return ev.clientX - bounds.left
+   }
+-  while(fptr < nf) {
+-    a = fi
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    } 
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
++  return 0
++}
++exports.x = mouseRelativeX
++
++function mouseRelativeY(ev) {
++  if(typeof ev === 'object') {
++    if('offsetY' in ev) {
++      return ev.offsetY
+     }
++    var target = mouseElement(ev)
++    var bounds = target.getBoundingClientRect()
++    return ev.clientY - bounds.top
+   }
+-  if(q0) {
+-    g[count++] = q0
+-  }
+-  if(q1) {
+-    g[count++] = q1
+-  }
+-  if(!count) {
+-    g[count++] = 0.0  
+-  }
+-  g.length = count
+-  return g
++  return 0
+ }
+-},{}],137:[function(require,module,exports){
++exports.y = mouseRelativeY
++
++},{}],120:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = toSuperScript
++var toPX = require('to-px')
+ 
+-var SUPERSCRIPTS = {
+-  ' ': ' ',
+-  '0': '⁰',
+-  '1': '¹',
+-  '2': '²',
+-  '3': '³',
+-  '4': '⁴',
+-  '5': '⁵',
+-  '6': '⁶',
+-  '7': '⁷',
+-  '8': '⁸',
+-  '9': '⁹',
+-  '+': '⁺',
+-  '-': '⁻',
+-  'a': 'ᵃ',
+-  'b': 'ᵇ',
+-  'c': 'ᶜ',
+-  'd': 'ᵈ',
+-  'e': 'ᵉ',
+-  'f': 'ᶠ',
+-  'g': 'ᵍ',
+-  'h': 'ʰ',
+-  'i': 'ⁱ',
+-  'j': 'ʲ',
+-  'k': 'ᵏ',
+-  'l': 'ˡ',
+-  'm': 'ᵐ',
+-  'n': 'ⁿ',
+-  'o': 'ᵒ',
+-  'p': 'ᵖ',
+-  'r': 'ʳ',
+-  's': 'ˢ',
+-  't': 'ᵗ',
+-  'u': 'ᵘ',
+-  'v': 'ᵛ',
+-  'w': 'ʷ',
+-  'x': 'ˣ',
+-  'y': 'ʸ',
+-  'z': 'ᶻ'
+-}
++module.exports = mouseWheelListen
+ 
+-function toSuperScript(x) {
+-  return x.split('').map(function(c) {
+-    if(c in SUPERSCRIPTS) {
+-      return SUPERSCRIPTS[c]
++function mouseWheelListen(element, callback, noScroll) {
++  if(typeof element === 'function') {
++    noScroll = !!callback
++    callback = element
++    element = window
++  }
++  var lineHeight = toPX('ex', element)
++  var listener = function(ev) {
++    if(noScroll) {
++      ev.preventDefault()
++    }
++    var dx = ev.deltaX || 0
++    var dy = ev.deltaY || 0
++    var dz = ev.deltaZ || 0
++    var mode = ev.deltaMode
++    var scale = 1
++    switch(mode) {
++      case 1:
++        scale = lineHeight
++      break
++      case 2:
++        scale = window.innerHeight
++      break
+     }
+-    return ''
+-  }).join('')
++    dx *= scale
++    dy *= scale
++    dz *= scale
++    if(dx || dy || dz) {
++      return callback(dx, dy, dz, ev)
++    }
++  }
++  element.addEventListener('wheel', listener)
++  return listener
+ }
+ 
+-},{}],138:[function(require,module,exports){
++},{"to-px":158}],121:[function(require,module,exports){
+ "use strict"
+ 
+ var pool = require("typedarray-pool")
+@@ -30055,4911 +29904,5922 @@ function compileSurfaceProcedure(vertexFunc, faceFunc, phaseFunc, scalarArgs, or
+     }
+   }
+ 
+-  function createLoop(i, mask) {
+-    if(i < 0) {
+-      processGridCell(mask)
+-      return
+-    }
+-    fillEmptySlice(i)
+-    code.push("if(", shape(order[i]), ">0){",
+-      index(order[i]), "=1;")
+-    createLoop(i-1, mask|(1<<order[i]))
++  function createLoop(i, mask) {
++    if(i < 0) {
++      processGridCell(mask)
++      return
++    }
++    fillEmptySlice(i)
++    code.push("if(", shape(order[i]), ">0){",
++      index(order[i]), "=1;")
++    createLoop(i-1, mask|(1<<order[i]))
++
++    for(var j=0; j<arrayArgs; ++j) {
++      code.push(pointer(j), "+=", step(j,order[i]), ";")
++    }
++    if(i === dimension-1) {
++      code.push(POINTER, "=0;")
++      flip()
++    }
++    forLoopBegin(i, 2)
++    createLoop(i-1, mask)
++    if(i === dimension-1) {
++      code.push("if(", index(order[dimension-1]), "&1){",
++        POINTER, "=0;}")
++      flip()
++    }
++    forLoopEnd(i)
++    code.push("}")
++  }
++
++  createLoop(dimension-1, 0)
++
++  //Release scratch memory
++  code.push("freeUint32(", VERTEX_IDS, ");freeUint32(", PHASES, ");")
++
++  //Compile and link procedure
++  var procedureCode = [
++    "'use strict';",
++    "function ", funcName, "(", args.join(), "){",
++      "var ", vars.join(), ";",
++      code.join(""),
++    "}",
++    "return ", funcName ].join("")
++
++  var proc = new Function(
++    "vertex", 
++    "face", 
++    "phase", 
++    "mallocUint32", 
++    "freeUint32",
++    procedureCode)
++  return proc(
++    vertexFunc, 
++    faceFunc, 
++    phaseFunc, 
++    pool.mallocUint32, 
++    pool.freeUint32)
++}
++
++function createSurfaceExtractor(args) {
++  function error(msg) {
++    throw new Error("ndarray-extract-contour: " + msg)
++  }
++  if(typeof args !== "object") {
++    error("Must specify arguments")
++  }
++  var order = args.order
++  if(!Array.isArray(order)) {
++    error("Must specify order")
++  }
++  var arrays = args.arrayArguments||1
++  if(arrays < 1) {
++    error("Must have at least one array argument")
++  }
++  var scalars = args.scalarArguments||0
++  if(scalars < 0) {
++    error("Scalar arg count must be > 0")
++  }
++  if(typeof args.vertex !== "function") {
++    error("Must specify vertex creation function")
++  }
++  if(typeof args.cell !== "function") {
++    error("Must specify cell creation function")
++  }
++  if(typeof args.phase !== "function") {
++    error("Must specify phase function")
++  }
++  var getters = args.getters || []
++  var typesig = new Array(arrays)
++  for(var i=0; i<arrays; ++i) {
++    if(getters.indexOf(i) >= 0) {
++      typesig[i] = true
++    } else {
++      typesig[i] = false
++    }
++  }
++  return compileSurfaceProcedure(
++    args.vertex,
++    args.cell,
++    args.phase,
++    scalars,
++    order,
++    typesig)
++}
++},{"typedarray-pool":162}],122:[function(require,module,exports){
++"use strict"
++
++var compile = require("cwise-compiler")
++
++var EmptyProc = {
++  body: "",
++  args: [],
++  thisVars: [],
++  localVars: []
++}
++
++function fixup(x) {
++  if(!x) {
++    return EmptyProc
++  }
++  for(var i=0; i<x.args.length; ++i) {
++    var a = x.args[i]
++    if(i === 0) {
++      x.args[i] = {name: a, lvalue:true, rvalue: !!x.rvalue, count:x.count||1 }
++    } else {
++      x.args[i] = {name: a, lvalue:false, rvalue:true, count: 1}
++    }
++  }
++  if(!x.thisVars) {
++    x.thisVars = []
++  }
++  if(!x.localVars) {
++    x.localVars = []
++  }
++  return x
++}
++
++function pcompile(user_args) {
++  return compile({
++    args:     user_args.args,
++    pre:      fixup(user_args.pre),
++    body:     fixup(user_args.body),
++    post:     fixup(user_args.proc),
++    funcName: user_args.funcName
++  })
++}
++
++function makeOp(user_args) {
++  var args = []
++  for(var i=0; i<user_args.args.length; ++i) {
++    args.push("a"+i)
++  }
++  var wrapper = new Function("P", [
++    "return function ", user_args.funcName, "_ndarrayops(", args.join(","), ") {P(", args.join(","), ");return a0}"
++  ].join(""))
++  return wrapper(pcompile(user_args))
++}
++
++var assign_ops = {
++  add:  "+",
++  sub:  "-",
++  mul:  "*",
++  div:  "/",
++  mod:  "%",
++  band: "&",
++  bor:  "|",
++  bxor: "^",
++  lshift: "<<",
++  rshift: ">>",
++  rrshift: ">>>"
++}
++;(function(){
++  for(var id in assign_ops) {
++    var op = assign_ops[id]
++    exports[id] = makeOp({
++      args: ["array","array","array"],
++      body: {args:["a","b","c"],
++             body: "a=b"+op+"c"},
++      funcName: id
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array","array"],
++      body: {args:["a","b"],
++             body:"a"+op+"=b"},
++      rvalue: true,
++      funcName: id+"eq"
++    })
++    exports[id+"s"] = makeOp({
++      args: ["array", "array", "scalar"],
++      body: {args:["a","b","s"],
++             body:"a=b"+op+"s"},
++      funcName: id+"s"
++    })
++    exports[id+"seq"] = makeOp({
++      args: ["array","scalar"],
++      body: {args:["a","s"],
++             body:"a"+op+"=s"},
++      rvalue: true,
++      funcName: id+"seq"
++    })
++  }
++})();
++
++var unary_ops = {
++  not: "!",
++  bnot: "~",
++  neg: "-",
++  recip: "1.0/"
++}
++;(function(){
++  for(var id in unary_ops) {
++    var op = unary_ops[id]
++    exports[id] = makeOp({
++      args: ["array", "array"],
++      body: {args:["a","b"],
++             body:"a="+op+"b"},
++      funcName: id
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array"],
++      body: {args:["a"],
++             body:"a="+op+"a"},
++      rvalue: true,
++      count: 2,
++      funcName: id+"eq"
++    })
++  }
++})();
++
++var binary_ops = {
++  and: "&&",
++  or: "||",
++  eq: "===",
++  neq: "!==",
++  lt: "<",
++  gt: ">",
++  leq: "<=",
++  geq: ">="
++}
++;(function() {
++  for(var id in binary_ops) {
++    var op = binary_ops[id]
++    exports[id] = makeOp({
++      args: ["array","array","array"],
++      body: {args:["a", "b", "c"],
++             body:"a=b"+op+"c"},
++      funcName: id
++    })
++    exports[id+"s"] = makeOp({
++      args: ["array","array","scalar"],
++      body: {args:["a", "b", "s"],
++             body:"a=b"+op+"s"},
++      funcName: id+"s"
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array", "array"],
++      body: {args:["a", "b"],
++             body:"a=a"+op+"b"},
++      rvalue:true,
++      count:2,
++      funcName: id+"eq"
++    })
++    exports[id+"seq"] = makeOp({
++      args: ["array", "scalar"],
++      body: {args:["a","s"],
++             body:"a=a"+op+"s"},
++      rvalue:true,
++      count:2,
++      funcName: id+"seq"
++    })
++  }
++})();
++
++var math_unary = [
++  "abs",
++  "acos",
++  "asin",
++  "atan",
++  "ceil",
++  "cos",
++  "exp",
++  "floor",
++  "log",
++  "round",
++  "sin",
++  "sqrt",
++  "tan"
++]
++;(function() {
++  for(var i=0; i<math_unary.length; ++i) {
++    var f = math_unary[i]
++    exports[f] = makeOp({
++                    args: ["array", "array"],
++                    pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                    body: {args:["a","b"], body:"a=this_f(b)", thisVars:["this_f"]},
++                    funcName: f
++                  })
++    exports[f+"eq"] = makeOp({
++                      args: ["array"],
++                      pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                      body: {args: ["a"], body:"a=this_f(a)", thisVars:["this_f"]},
++                      rvalue: true,
++                      count: 2,
++                      funcName: f+"eq"
++                    })
++  }
++})();
++
++var math_comm = [
++  "max",
++  "min",
++  "atan2",
++  "pow"
++]
++;(function(){
++  for(var i=0; i<math_comm.length; ++i) {
++    var f= math_comm[i]
++    exports[f] = makeOp({
++                  args:["array", "array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
++                  funcName: f
++                })
++    exports[f+"s"] = makeOp({
++                  args:["array", "array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
++                  funcName: f+"s"
++                  })
++    exports[f+"eq"] = makeOp({ args:["array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
++                  rvalue: true,
++                  count: 2,
++                  funcName: f+"eq"
++                  })
++    exports[f+"seq"] = makeOp({ args:["array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
++                  rvalue:true,
++                  count:2,
++                  funcName: f+"seq"
++                  })
++  }
++})();
++
++var math_noncomm = [
++  "atan2",
++  "pow"
++]
++;(function(){
++  for(var i=0; i<math_noncomm.length; ++i) {
++    var f= math_noncomm[i]
++    exports[f+"op"] = makeOp({
++                  args:["array", "array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
++                  funcName: f+"op"
++                })
++    exports[f+"ops"] = makeOp({
++                  args:["array", "array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
++                  funcName: f+"ops"
++                  })
++    exports[f+"opeq"] = makeOp({ args:["array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
++                  rvalue: true,
++                  count: 2,
++                  funcName: f+"opeq"
++                  })
++    exports[f+"opseq"] = makeOp({ args:["array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
++                  rvalue:true,
++                  count:2,
++                  funcName: f+"opseq"
++                  })
++  }
++})();
++
++exports.any = compile({
++  args:["array"],
++  pre: EmptyProc,
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "if(a){return true}", localVars: [], thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return false"},
++  funcName: "any"
++})
++
++exports.all = compile({
++  args:["array"],
++  pre: EmptyProc,
++  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1}], body: "if(!x){return false}", localVars: [], thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return true"},
++  funcName: "all"
++})
++
++exports.sum = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s+=a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "sum"
++})
++
++exports.prod = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=1"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s*=a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "prod"
++})
++
++exports.norm2squared = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norm2squared"
++})
++  
++exports.norm2 = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return Math.sqrt(this_s)"},
++  funcName: "norm2"
++})
++  
++
++exports.norminf = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:4}], body:"if(-a>this_s){this_s=-a}else if(a>this_s){this_s=a}", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norminf"
++})
++
++exports.norm1 = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:3}], body: "this_s+=a<0?-a:a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norm1"
++})
++
++exports.sup = compile({
++  args: [ "array" ],
++  pre:
++   { body: "this_h=-Infinity",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  body:
++   { body: "if(_inline_1_arg0_>this_h)this_h=_inline_1_arg0_",
++     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  post:
++   { body: "return this_h",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] }
++ })
++
++exports.inf = compile({
++  args: [ "array" ],
++  pre:
++   { body: "this_h=Infinity",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  body:
++   { body: "if(_inline_1_arg0_<this_h)this_h=_inline_1_arg0_",
++     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  post:
++   { body: "return this_h",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] }
++ })
++
++exports.argmin = compile({
++  args:["index","array","shape"],
++  pre:{
++    body:"{this_v=Infinity;this_i=_inline_0_arg2_.slice(0)}",
++    args:[
++      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
++      ],
++    thisVars:["this_i","this_v"],
++    localVars:[]},
++  body:{
++    body:"{if(_inline_1_arg1_<this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
++    args:[
++      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
++      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
++    thisVars:["this_i","this_v"],
++    localVars:["_inline_1_k"]},
++  post:{
++    body:"{return this_i}",
++    args:[],
++    thisVars:["this_i"],
++    localVars:[]}
++})
++
++exports.argmax = compile({
++  args:["index","array","shape"],
++  pre:{
++    body:"{this_v=-Infinity;this_i=_inline_0_arg2_.slice(0)}",
++    args:[
++      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
++      ],
++    thisVars:["this_i","this_v"],
++    localVars:[]},
++  body:{
++    body:"{if(_inline_1_arg1_>this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
++    args:[
++      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
++      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
++    thisVars:["this_i","this_v"],
++    localVars:["_inline_1_k"]},
++  post:{
++    body:"{return this_i}",
++    args:[],
++    thisVars:["this_i"],
++    localVars:[]}
++})  
+ 
+-    for(var j=0; j<arrayArgs; ++j) {
+-      code.push(pointer(j), "+=", step(j,order[i]), ";")
+-    }
+-    if(i === dimension-1) {
+-      code.push(POINTER, "=0;")
+-      flip()
+-    }
+-    forLoopBegin(i, 2)
+-    createLoop(i-1, mask)
+-    if(i === dimension-1) {
+-      code.push("if(", index(order[dimension-1]), "&1){",
+-        POINTER, "=0;}")
+-      flip()
+-    }
+-    forLoopEnd(i)
+-    code.push("}")
+-  }
++exports.random = makeOp({
++  args: ["array"],
++  pre: {args:[], body:"this_f=Math.random", thisVars:["this_f"]},
++  body: {args: ["a"], body:"a=this_f()", thisVars:["this_f"]},
++  funcName: "random"
++})
+ 
+-  createLoop(dimension-1, 0)
++exports.assign = makeOp({
++  args:["array", "array"],
++  body: {args:["a", "b"], body:"a=b"},
++  funcName: "assign" })
+ 
+-  //Release scratch memory
+-  code.push("freeUint32(", VERTEX_IDS, ");freeUint32(", PHASES, ");")
++exports.assigns = makeOp({
++  args:["array", "scalar"],
++  body: {args:["a", "b"], body:"a=b"},
++  funcName: "assigns" })
+ 
+-  //Compile and link procedure
+-  var procedureCode = [
+-    "'use strict';",
+-    "function ", funcName, "(", args.join(), "){",
+-      "var ", vars.join(), ";",
+-      code.join(""),
+-    "}",
+-    "return ", funcName ].join("")
+ 
+-  var proc = new Function(
+-    "vertex", 
+-    "face", 
+-    "phase", 
+-    "mallocUint32", 
+-    "freeUint32",
+-    procedureCode)
+-  return proc(
+-    vertexFunc, 
+-    faceFunc, 
+-    phaseFunc, 
+-    pool.mallocUint32, 
+-    pool.freeUint32)
+-}
++exports.equals = compile({
++  args:["array", "array"],
++  pre: EmptyProc,
++  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1},
++               {name:"y", lvalue:false, rvalue:true, count:1}], 
++        body: "if(x!==y){return false}", 
++        localVars: [], 
++        thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return true"},
++  funcName: "equals"
++})
+ 
+-function createSurfaceExtractor(args) {
+-  function error(msg) {
+-    throw new Error("ndarray-extract-contour: " + msg)
+-  }
+-  if(typeof args !== "object") {
+-    error("Must specify arguments")
+-  }
+-  var order = args.order
+-  if(!Array.isArray(order)) {
+-    error("Must specify order")
+-  }
+-  var arrays = args.arrayArguments||1
+-  if(arrays < 1) {
+-    error("Must have at least one array argument")
+-  }
+-  var scalars = args.scalarArguments||0
+-  if(scalars < 0) {
+-    error("Scalar arg count must be > 0")
+-  }
+-  if(typeof args.vertex !== "function") {
+-    error("Must specify vertex creation function")
+-  }
+-  if(typeof args.cell !== "function") {
+-    error("Must specify cell creation function")
+-  }
+-  if(typeof args.phase !== "function") {
+-    error("Must specify phase function")
+-  }
+-  var getters = args.getters || []
+-  var typesig = new Array(arrays)
+-  for(var i=0; i<arrays; ++i) {
+-    if(getters.indexOf(i) >= 0) {
+-      typesig[i] = true
+-    } else {
+-      typesig[i] = false
+-    }
+-  }
+-  return compileSurfaceProcedure(
+-    args.vertex,
+-    args.cell,
+-    args.phase,
+-    scalars,
+-    order,
+-    typesig)
+-}
+-},{"typedarray-pool":151}],139:[function(require,module,exports){
+-// transliterated from the python snippet here:
+-// http://en.wikipedia.org/wiki/Lanczos_approximation
+ 
+-var g = 7;
+-var p = [
+-    0.99999999999980993,
+-    676.5203681218851,
+-    -1259.1392167224028,
+-    771.32342877765313,
+-    -176.61502916214059,
+-    12.507343278686905,
+-    -0.13857109526572012,
+-    9.9843695780195716e-6,
+-    1.5056327351493116e-7
+-];
+ 
+-var g_ln = 607/128;
+-var p_ln = [
+-    0.99999999999999709182,
+-    57.156235665862923517,
+-    -59.597960355475491248,
+-    14.136097974741747174,
+-    -0.49191381609762019978,
+-    0.33994649984811888699e-4,
+-    0.46523628927048575665e-4,
+-    -0.98374475304879564677e-4,
+-    0.15808870322491248884e-3,
+-    -0.21026444172410488319e-3,
+-    0.21743961811521264320e-3,
+-    -0.16431810653676389022e-3,
+-    0.84418223983852743293e-4,
+-    -0.26190838401581408670e-4,
+-    0.36899182659531622704e-5
+-];
++},{"cwise-compiler":50}],123:[function(require,module,exports){
++var iota = require("iota-array")
++var isBuffer = require("is-buffer")
+ 
+-// Spouge approximation (suitable for large arguments)
+-function lngamma(z) {
++var hasTypedArrays  = ((typeof Float64Array) !== "undefined")
+ 
+-    if(z < 0) return Number('0/0');
+-    var x = p_ln[0];
+-    for(var i = p_ln.length - 1; i > 0; --i) x += p_ln[i] / (z + i);
+-    var t = z + g_ln + 0.5;
+-    return .5*Math.log(2*Math.PI)+(z+.5)*Math.log(t)-t+Math.log(x)-Math.log(z);
++function compare1st(a, b) {
++  return a[0] - b[0]
+ }
+ 
+-module.exports = function gamma (z) {
+-    if (z < 0.5) {
+-        return Math.PI / (Math.sin(Math.PI * z) * gamma(1 - z));
+-    }
+-    else if(z > 100) return Math.exp(lngamma(z));
+-    else {
+-        z -= 1;
+-        var x = p[0];
+-        for (var i = 1; i < g + 2; i++) {
+-            x += p[i] / (z + i);
+-        }
+-        var t = z + g + 0.5;
+-
+-        return Math.sqrt(2 * Math.PI)
+-            * Math.pow(t, z + 0.5)
+-            * Math.exp(-t)
+-            * x
+-        ;
+-    }
+-};
++function order() {
++  var stride = this.stride
++  var terms = new Array(stride.length)
++  var i
++  for(i=0; i<terms.length; ++i) {
++    terms[i] = [Math.abs(stride[i]), i]
++  }
++  terms.sort(compare1st)
++  var result = new Array(terms.length)
++  for(i=0; i<result.length; ++i) {
++    result[i] = terms[i][1]
++  }
++  return result
++}
+ 
+-module.exports.log = lngamma;
++function compileConstructor(dtype, dimension) {
++  var className = ["View", dimension, "d", dtype].join("")
++  if(dimension < 0) {
++    className = "View_Nil" + dtype
++  }
++  var useGetters = (dtype === "generic")
+ 
+-},{}],140:[function(require,module,exports){
+-"use strict"
++  if(dimension === -1) {
++    //Special case for trivial arrays
++    var code =
++      "function "+className+"(a){this.data=a;};\
++var proto="+className+".prototype;\
++proto.dtype='"+dtype+"';\
++proto.index=function(){return -1};\
++proto.size=0;\
++proto.dimension=-1;\
++proto.shape=proto.stride=proto.order=[];\
++proto.lo=proto.hi=proto.transpose=proto.step=\
++function(){return new "+className+"(this.data);};\
++proto.get=proto.set=function(){};\
++proto.pick=function(){return null};\
++return function construct_"+className+"(a){return new "+className+"(a);}"
++    var procedure = new Function(code)
++    return procedure()
++  } else if(dimension === 0) {
++    //Special case for 0d arrays
++    var code =
++      "function "+className+"(a,d) {\
++this.data = a;\
++this.offset = d\
++};\
++var proto="+className+".prototype;\
++proto.dtype='"+dtype+"';\
++proto.index=function(){return this.offset};\
++proto.dimension=0;\
++proto.size=1;\
++proto.shape=\
++proto.stride=\
++proto.order=[];\
++proto.lo=\
++proto.hi=\
++proto.transpose=\
++proto.step=function "+className+"_copy() {\
++return new "+className+"(this.data,this.offset)\
++};\
++proto.pick=function "+className+"_pick(){\
++return TrivialArray(this.data);\
++};\
++proto.valueOf=proto.get=function "+className+"_get(){\
++return "+(useGetters ? "this.data.get(this.offset)" : "this.data[this.offset]")+
++"};\
++proto.set=function "+className+"_set(v){\
++return "+(useGetters ? "this.data.set(this.offset,v)" : "this.data[this.offset]=v")+"\
++};\
++return function construct_"+className+"(a,b,c,d){return new "+className+"(a,d)}"
++    var procedure = new Function("TrivialArray", code)
++    return procedure(CACHED_CONSTRUCTORS[dtype][0])
++  }
+ 
+-module.exports = permutationSign
++  var code = ["'use strict'"]
+ 
+-var BRUTE_FORCE_CUTOFF = 32
++  //Create constructor for view
++  var indices = iota(dimension)
++  var args = indices.map(function(i) { return "i"+i })
++  var index_str = "this.offset+" + indices.map(function(i) {
++        return "this.stride[" + i + "]*i" + i
++      }).join("+")
++  var shapeArg = indices.map(function(i) {
++      return "b"+i
++    }).join(",")
++  var strideArg = indices.map(function(i) {
++      return "c"+i
++    }).join(",")
++  code.push(
++    "function "+className+"(a," + shapeArg + "," + strideArg + ",d){this.data=a",
++      "this.shape=[" + shapeArg + "]",
++      "this.stride=[" + strideArg + "]",
++      "this.offset=d|0}",
++    "var proto="+className+".prototype",
++    "proto.dtype='"+dtype+"'",
++    "proto.dimension="+dimension)
+ 
+-var pool = require("typedarray-pool")
++  //view.size:
++  code.push("Object.defineProperty(proto,'size',{get:function "+className+"_size(){\
++return "+indices.map(function(i) { return "this.shape["+i+"]" }).join("*"),
++"}})")
+ 
+-function permutationSign(p) {
+-  var n = p.length
+-  if(n < BRUTE_FORCE_CUTOFF) {
+-    //Use quadratic algorithm for small n
+-    var sgn = 1
+-    for(var i=0; i<n; ++i) {
+-      for(var j=0; j<i; ++j) {
+-        if(p[i] < p[j]) {
+-          sgn = -sgn
+-        } else if(p[i] === p[j]) {
+-          return 0
+-        }
+-      }
+-    }
+-    return sgn
++  //view.order:
++  if(dimension === 1) {
++    code.push("proto.order=[0]")
+   } else {
+-    //Otherwise use linear time algorithm
+-    var visited = pool.mallocUint8(n)
+-    for(var i=0; i<n; ++i) {
+-      visited[i] = 0
+-    }
+-    var sgn = 1
+-    for(var i=0; i<n; ++i) {
+-      if(!visited[i]) {
+-        var count = 1
+-        visited[i] = 1
+-        for(var j=p[i]; j!==i; j=p[j]) {
+-          if(visited[j]) {
+-            pool.freeUint8(visited)
+-            return 0
+-          }
+-          count += 1
+-          visited[j] = 1
+-        }
+-        if(!(count & 1)) {
+-          sgn = -sgn
+-        }
++    code.push("Object.defineProperty(proto,'order',{get:")
++    if(dimension < 4) {
++      code.push("function "+className+"_order(){")
++      if(dimension === 2) {
++        code.push("return (Math.abs(this.stride[0])>Math.abs(this.stride[1]))?[1,0]:[0,1]}})")
++      } else if(dimension === 3) {
++        code.push(
++"var s0=Math.abs(this.stride[0]),s1=Math.abs(this.stride[1]),s2=Math.abs(this.stride[2]);\
++if(s0>s1){\
++if(s1>s2){\
++return [2,1,0];\
++}else if(s0>s2){\
++return [1,2,0];\
++}else{\
++return [1,0,2];\
++}\
++}else if(s0>s2){\
++return [2,0,1];\
++}else if(s2>s1){\
++return [0,1,2];\
++}else{\
++return [0,2,1];\
++}}})")
+       }
++    } else {
++      code.push("ORDER})")
+     }
+-    pool.freeUint8(visited)
+-    return sgn
+   }
+-}
+-},{"typedarray-pool":151}],141:[function(require,module,exports){
+-"use strict"
+-
+-var pool = require("typedarray-pool")
+-var inverse = require("invert-permutation")
+ 
+-function rank(permutation) {
+-  var n = permutation.length
+-  switch(n) {
+-    case 0:
+-    case 1:
+-      return 0
+-    case 2:
+-      return permutation[1]
+-    default:
+-      break
+-  }
+-  var p = pool.mallocUint32(n)
+-  var pinv = pool.mallocUint32(n)
+-  var r = 0, s, t, i
+-  inverse(permutation, pinv)
+-  for(i=0; i<n; ++i) {
+-    p[i] = permutation[i]
+-  }
+-  for(i=n-1; i>0; --i) {
+-    t = pinv[i]
+-    s = p[i]
+-    p[i] = p[t]
+-    p[t] = s
+-    pinv[i] = pinv[s]
+-    pinv[s] = t
+-    r = (r + s) * i
++  //view.set(i0, ..., v):
++  code.push(
++"proto.set=function "+className+"_set("+args.join(",")+",v){")
++  if(useGetters) {
++    code.push("return this.data.set("+index_str+",v)}")
++  } else {
++    code.push("return this.data["+index_str+"]=v}")
+   }
+-  pool.freeUint32(pinv)
+-  pool.freeUint32(p)
+-  return r
+-}
+ 
+-function unrank(n, r, p) {
+-  switch(n) {
+-    case 0:
+-      if(p) { return p }
+-      return []
+-    case 1:
+-      if(p) {
+-        p[0] = 0
+-        return p
+-      } else {
+-        return [0]
+-      }
+-    case 2:
+-      if(p) {
+-        if(r) {
+-          p[0] = 0
+-          p[1] = 1
+-        } else {
+-          p[0] = 1
+-          p[1] = 0
+-        }
+-        return p
+-      } else {
+-        return r ? [0,1] : [1,0]
+-      }
+-    default:
+-      break
+-  }
+-  p = p || new Array(n)
+-  var s, t, i, nf=1
+-  p[0] = 0
+-  for(i=1; i<n; ++i) {
+-    p[i] = i
+-    nf = (nf*i)|0
+-  }
+-  for(i=n-1; i>0; --i) {
+-    s = (r / nf)|0
+-    r = (r - s * nf)|0
+-    nf = (nf / i)|0
+-    t = p[i]|0
+-    p[i] = p[s]|0
+-    p[s] = t|0
++  //view.get(i0, ...):
++  code.push("proto.get=function "+className+"_get("+args.join(",")+"){")
++  if(useGetters) {
++    code.push("return this.data.get("+index_str+")}")
++  } else {
++    code.push("return this.data["+index_str+"]}")
+   }
+-  return p
+-}
+ 
+-exports.rank = rank
+-exports.unrank = unrank
++  //view.index:
++  code.push(
++    "proto.index=function "+className+"_index(", args.join(), "){return "+index_str+"}")
++
++  //view.hi():
++  code.push("proto.hi=function "+className+"_hi("+args.join(",")+"){return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return ["(typeof i",i,"!=='number'||i",i,"<0)?this.shape[", i, "]:i", i,"|0"].join("")
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "this.stride["+i + "]"
++    }).join(",")+",this.offset)}")
++
++  //view.lo():
++  var a_vars = indices.map(function(i) { return "a"+i+"=this.shape["+i+"]" })
++  var c_vars = indices.map(function(i) { return "c"+i+"=this.stride["+i+"]" })
++  code.push("proto.lo=function "+className+"_lo("+args.join(",")+"){var b=this.offset,d=0,"+a_vars.join(",")+","+c_vars.join(","))
++  for(var i=0; i<dimension; ++i) {
++    code.push(
++"if(typeof i"+i+"==='number'&&i"+i+">=0){\
++d=i"+i+"|0;\
++b+=c"+i+"*d;\
++a"+i+"-=d}")
++  }
++  code.push("return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return "a"+i
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "c"+i
++    }).join(",")+",b)}")
+ 
+-},{"invert-permutation":142,"typedarray-pool":151}],142:[function(require,module,exports){
+-"use strict"
++  //view.step():
++  code.push("proto.step=function "+className+"_step("+args.join(",")+"){var "+
++    indices.map(function(i) {
++      return "a"+i+"=this.shape["+i+"]"
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "b"+i+"=this.stride["+i+"]"
++    }).join(",")+",c=this.offset,d=0,ceil=Math.ceil")
++  for(var i=0; i<dimension; ++i) {
++    code.push(
++"if(typeof i"+i+"==='number'){\
++d=i"+i+"|0;\
++if(d<0){\
++c+=b"+i+"*(a"+i+"-1);\
++a"+i+"=ceil(-a"+i+"/d)\
++}else{\
++a"+i+"=ceil(a"+i+"/d)\
++}\
++b"+i+"*=d\
++}")
++  }
++  code.push("return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return "a" + i
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "b" + i
++    }).join(",")+",c)}")
+ 
+-function invertPermutation(pi, result) {
+-  result = result || new Array(pi.length)
+-  for(var i=0; i<pi.length; ++i) {
+-    result[pi[i]] = i
++  //view.transpose():
++  var tShape = new Array(dimension)
++  var tStride = new Array(dimension)
++  for(var i=0; i<dimension; ++i) {
++    tShape[i] = "a[i"+i+"]"
++    tStride[i] = "b[i"+i+"]"
+   }
+-  return result
+-}
++  code.push("proto.transpose=function "+className+"_transpose("+args+"){"+
++    args.map(function(n,idx) { return n + "=(" + n + "===undefined?" + idx + ":" + n + "|0)"}).join(";"),
++    "var a=this.shape,b=this.stride;return new "+className+"(this.data,"+tShape.join(",")+","+tStride.join(",")+",this.offset)}")
+ 
+-module.exports = invertPermutation
+-},{}],143:[function(require,module,exports){
+-"use strict"
++  //view.pick():
++  code.push("proto.pick=function "+className+"_pick("+args+"){var a=[],b=[],c=this.offset")
++  for(var i=0; i<dimension; ++i) {
++    code.push("if(typeof i"+i+"==='number'&&i"+i+">=0){c=(c+this.stride["+i+"]*i"+i+")|0}else{a.push(this.shape["+i+"]);b.push(this.stride["+i+"])}")
++  }
++  code.push("var ctor=CTOR_LIST[a.length+1];return ctor(this.data,a,b,c)}")
+ 
+-module.exports = triangulateCube
++  //Add return statement
++  code.push("return function construct_"+className+"(data,shape,stride,offset){return new "+className+"(data,"+
++    indices.map(function(i) {
++      return "shape["+i+"]"
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "stride["+i+"]"
++    }).join(",")+",offset)}")
+ 
+-var perm = require("permutation-rank")
+-var sgn = require("permutation-parity")
+-var gamma = require("gamma")
++  //Compile procedure
++  var procedure = new Function("CTOR_LIST", "ORDER", code.join("\n"))
++  return procedure(CACHED_CONSTRUCTORS[dtype], order)
++}
+ 
+-function triangulateCube(dimension) {
+-  if(dimension < 0) {
+-    return [ ]
+-  }
+-  if(dimension === 0) {
+-    return [ [0] ]
++function arrayDType(data) {
++  if(isBuffer(data)) {
++    return "buffer"
+   }
+-  var dfactorial = Math.round(gamma(dimension+1))|0
+-  var result = []
+-  for(var i=0; i<dfactorial; ++i) {
+-    var p = perm.unrank(dimension, i)
+-    var cell = [ 0 ]
+-    var v = 0
+-    for(var j=0; j<p.length; ++j) {
+-      v += (1<<p[j])
+-      cell.push(v)
+-    }
+-    if(sgn(p) < 1) {
+-      cell[0] = v
+-      cell[dimension] = 0
++  if(hasTypedArrays) {
++    switch(Object.prototype.toString.call(data)) {
++      case "[object Float64Array]":
++        return "float64"
++      case "[object Float32Array]":
++        return "float32"
++      case "[object Int8Array]":
++        return "int8"
++      case "[object Int16Array]":
++        return "int16"
++      case "[object Int32Array]":
++        return "int32"
++      case "[object Uint8Array]":
++        return "uint8"
++      case "[object Uint16Array]":
++        return "uint16"
++      case "[object Uint32Array]":
++        return "uint32"
++      case "[object Uint8ClampedArray]":
++        return "uint8_clamped"
+     }
+-    result.push(cell)
+   }
+-  return result
++  if(Array.isArray(data)) {
++    return "array"
++  }
++  return "generic"
+ }
+-},{"gamma":139,"permutation-parity":140,"permutation-rank":141}],144:[function(require,module,exports){
+-module.exports = require('cwise-compiler')({
+-    args: ['array', {
+-        offset: [1],
+-        array: 0
+-    }, 'scalar', 'scalar', 'index'],
+-    pre: {
+-        "body": "{}",
+-        "args": [],
+-        "thisVars": [],
+-        "localVars": []
+-    },
+-    post: {
+-        "body": "{}",
+-        "args": [],
+-        "thisVars": [],
+-        "localVars": []
+-    },
+-    body: {
+-        "body": "{\n        var _inline_1_da = _inline_1_arg0_ - _inline_1_arg3_\n        var _inline_1_db = _inline_1_arg1_ - _inline_1_arg3_\n        if((_inline_1_da >= 0) !== (_inline_1_db >= 0)) {\n          _inline_1_arg2_.push(_inline_1_arg4_[0] + 0.5 + 0.5 * (_inline_1_da + _inline_1_db) / (_inline_1_da - _inline_1_db))\n        }\n      }",
+-        "args": [{
+-            "name": "_inline_1_arg0_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg1_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg2_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg3_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 2
+-        }, {
+-            "name": "_inline_1_arg4_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }],
+-        "thisVars": [],
+-        "localVars": ["_inline_1_da", "_inline_1_db"]
+-    },
+-    funcName: 'zeroCrossings'
+-})
+-
+-},{"cwise-compiler":58}],145:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = findZeroCrossings
+-
+-var core = require("./lib/zc-core")
+-
+-function findZeroCrossings(array, level) {
+-  var cross = []
+-  level = +level || 0.0
+-  core(array.hi(array.shape[0]-1), cross, level)
+-  return cross
++var CACHED_CONSTRUCTORS = {
++  "float32":[],
++  "float64":[],
++  "int8":[],
++  "int16":[],
++  "int32":[],
++  "uint8":[],
++  "uint16":[],
++  "uint32":[],
++  "array":[],
++  "uint8_clamped":[],
++  "buffer":[],
++  "generic":[]
+ }
+-},{"./lib/zc-core":144}],146:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = surfaceNets
+-
+-var generateContourExtractor = require("ndarray-extract-contour")
+-var triangulateCube = require("triangulate-hypercube")
+-var zeroCrossings = require("zero-crossings")
+-
+-function buildSurfaceNets(order, dtype) {
+-  var dimension = order.length
+-  var code = ["'use strict';"]
+-  var funcName = "surfaceNets" + order.join("_") + "d" + dtype
+ 
+-  //Contour extraction function
+-  code.push(
+-    "var contour=genContour({",
+-      "order:[", order.join(), "],",
+-      "scalarArguments: 3,",
+-      "phase:function phaseFunc(p,a,b,c) { return (p > c)|0 },")
+-  if(dtype === "generic") {
+-    code.push("getters:[0],")
++;(function() {
++  for(var id in CACHED_CONSTRUCTORS) {
++    CACHED_CONSTRUCTORS[id].push(compileConstructor(id, -1))
+   }
++});
+ 
+-  //Generate vertex function
+-  var cubeArgs = []
+-  var extraArgs = []
+-  for(var i=0; i<dimension; ++i) {
+-    cubeArgs.push("d" + i)
+-    extraArgs.push("d" + i)
+-  }
+-  for(var i=0; i<(1<<dimension); ++i) {
+-    cubeArgs.push("v" + i)
+-    extraArgs.push("v" + i)
+-  }
+-  for(var i=0; i<(1<<dimension); ++i) {
+-    cubeArgs.push("p" + i)
+-    extraArgs.push("p" + i)
+-  }
+-  cubeArgs.push("a", "b", "c")
+-  extraArgs.push("a", "c")
+-  code.push("vertex:function vertexFunc(", cubeArgs.join(), "){")
+-  //Mask args together
+-  var maskStr = []
+-  for(var i=0; i<(1<<dimension); ++i) {
+-    maskStr.push("(p" + i + "<<" + i + ")")
++function wrappedNDArrayCtor(data, shape, stride, offset) {
++  if(data === undefined) {
++    var ctor = CACHED_CONSTRUCTORS.array[0]
++    return ctor([])
++  } else if(typeof data === "number") {
++    data = [data]
+   }
+-  //Generate variables and giganto switch statement
+-  code.push("var m=(", maskStr.join("+"), ")|0;if(m===0||m===", (1<<(1<<dimension))-1, "){return}")
+-  var extraFuncs = []
+-  var currentFunc = []
+-  if(1<<(1<<dimension) <= 128) {
+-    code.push("switch(m){")
+-    currentFunc = code
+-  } else {
+-    code.push("switch(m>>>7){")
++  if(shape === undefined) {
++    shape = [ data.length ]
+   }
+-  for(var i=0; i<1<<(1<<dimension); ++i) {
+-    if(1<<(1<<dimension) > 128) {
+-      if((i%128)===0) {
+-        if(extraFuncs.length > 0) {
+-          currentFunc.push("}}")
+-        }
+-        var efName = "vExtra" + extraFuncs.length
+-        code.push("case ", (i>>>7), ":", efName, "(m&0x7f,", extraArgs.join(), ");break;")
+-        currentFunc = [
+-          "function ", efName, "(m,", extraArgs.join(), "){switch(m){"
+-        ]
+-        extraFuncs.push(currentFunc)
+-      }  
+-    }
+-    currentFunc.push("case ", (i&0x7f), ":")
+-    var crossings = new Array(dimension)
+-    var denoms = new Array(dimension)
+-    var crossingCount = new Array(dimension)
+-    var bias = new Array(dimension)
+-    var totalCrossings = 0
+-    for(var j=0; j<dimension; ++j) {
+-      crossings[j] = []
+-      denoms[j] = []
+-      crossingCount[j] = 0
+-      bias[j] = 0
+-    }
+-    for(var j=0; j<(1<<dimension); ++j) {
+-      for(var k=0; k<dimension; ++k) {
+-        var u = j ^ (1<<k)
+-        if(u > j) {
+-          continue
+-        }
+-        if(!(i&(1<<u)) !== !(i&(1<<j))) {
+-          var sign = 1
+-          if(i&(1<<u)) {
+-            denoms[k].push("v" + u + "-v" + j)
+-          } else {
+-            denoms[k].push("v" + j + "-v" + u)
+-            sign = -sign
+-          }
+-          if(sign < 0) {
+-            crossings[k].push("-v" + j + "-v" + u)
+-            crossingCount[k] += 2
+-          } else {
+-            crossings[k].push("v" + j + "+v" + u)
+-            crossingCount[k] -= 2            
+-          }
+-          totalCrossings += 1
+-          for(var l=0; l<dimension; ++l) {
+-            if(l === k) {
+-              continue
+-            }
+-            if(u&(1<<l)) {
+-              bias[l] += 1
+-            } else {
+-              bias[l] -= 1
+-            }
+-          }
+-        }
+-      }
++  var d = shape.length
++  if(stride === undefined) {
++    stride = new Array(d)
++    for(var i=d-1, sz=1; i>=0; --i) {
++      stride[i] = sz
++      sz *= shape[i]
+     }
+-    var vertexStr = []
+-    for(var k=0; k<dimension; ++k) {
+-      if(crossings[k].length === 0) {
+-        vertexStr.push("d" + k + "-0.5")
+-      } else {
+-        var cStr = ""
+-        if(crossingCount[k] < 0) {
+-          cStr = crossingCount[k] + "*c"
+-        } else if(crossingCount[k] > 0) {
+-          cStr = "+" + crossingCount[k] + "*c"
+-        }
+-        var weight = 0.5 * (crossings[k].length / totalCrossings)
+-        var shift = 0.5 + 0.5 * (bias[k] / totalCrossings)
+-        vertexStr.push("d" + k + "-" + shift + "-" + weight + "*(" + crossings[k].join("+") + cStr + ")/(" + denoms[k].join("+") + ")")
+-        
++  }
++  if(offset === undefined) {
++    offset = 0
++    for(var i=0; i<d; ++i) {
++      if(stride[i] < 0) {
++        offset -= (shape[i]-1)*stride[i]
+       }
+     }
+-    currentFunc.push("a.push([", vertexStr.join(), "]);",
+-      "break;")
+-  }
+-  code.push("}},")
+-  if(extraFuncs.length > 0) {
+-    currentFunc.push("}}")
+   }
+-
+-  //Create face function
+-  var faceArgs = []
+-  for(var i=0; i<(1<<(dimension-1)); ++i) {
+-    faceArgs.push("v" + i)
++  var dtype = arrayDType(data)
++  var ctor_list = CACHED_CONSTRUCTORS[dtype]
++  while(ctor_list.length <= d+1) {
++    ctor_list.push(compileConstructor(dtype, ctor_list.length-1))
+   }
+-  faceArgs.push("c0", "c1", "p0", "p1", "a", "b", "c")
+-  code.push("cell:function cellFunc(", faceArgs.join(), "){")
++  var ctor = ctor_list[d+1]
++  return ctor(data, shape, stride, offset)
++}
+ 
+-  var facets = triangulateCube(dimension-1)
+-  code.push("if(p0){b.push(",
+-    facets.map(function(f) {
+-      return "[" + f.map(function(v) {
+-        return "v" + v
+-      }) + "]"
+-    }).join(), ")}else{b.push(",
+-    facets.map(function(f) {
+-      var e = f.slice()
+-      e.reverse()
+-      return "[" + e.map(function(v) {
+-        return "v" + v
+-      }) + "]"
+-    }).join(),
+-    ")}}});function ", funcName, "(array,level){var verts=[],cells=[];contour(array,verts,cells,level);return {positions:verts,cells:cells};} return ", funcName, ";")
++module.exports = wrappedNDArrayCtor
+ 
+-  for(var i=0; i<extraFuncs.length; ++i) {
+-    code.push(extraFuncs[i].join(""))
+-  }
++},{"iota-array":116,"is-buffer":117}],124:[function(require,module,exports){
++"use strict"
+ 
+-  //Compile and link
+-  var proc = new Function("genContour", code.join(""))
+-  return proc(generateContourExtractor)
+-}
++var doubleBits = require("double-bits")
+ 
+-//1D case: Need to handle specially
+-function mesh1D(array, level) {
+-  var zc = zeroCrossings(array, level)
+-  var n = zc.length
+-  var npos = new Array(n)
+-  var ncel = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    npos[i] = [ zc[i] ]
+-    ncel[i] = [ i ]
+-  }
+-  return {
+-    positions: npos,
+-    cells: ncel
+-  }
+-}
++var SMALLEST_DENORM = Math.pow(2, -1074)
++var UINT_MAX = (-1)>>>0
+ 
+-var CACHE = {}
++module.exports = nextafter
+ 
+-function surfaceNets(array,level) {
+-  if(array.dimension <= 0) {
+-    return { positions: [], cells: [] }
+-  } else if(array.dimension === 1) {
+-    return mesh1D(array, level)
++function nextafter(x, y) {
++  if(isNaN(x) || isNaN(y)) {
++    return NaN
+   }
+-  var typesig = array.order.join() + "-" + array.dtype
+-  var proc = CACHE[typesig]
+-  var level = (+level) || 0.0
+-  if(!proc) {
+-    proc = CACHE[typesig] = buildSurfaceNets(array.order, array.dtype)
++  if(x === y) {
++    return x
+   }
+-  return proc(array,level)
+-}
+-},{"ndarray-extract-contour":138,"triangulate-hypercube":143,"zero-crossings":145}],147:[function(require,module,exports){
+-(function (process){
+-'use strict'
+-
+-module.exports = textGet
+-
+-var vectorizeText = require('vectorize-text')
+-
+-var globals = window || process.global || {}
+-var __TEXT_CACHE  = globals.__TEXT_CACHE || {}
+-globals.__TEXT_CACHE = {}
+-
+-function unwrap(mesh) {
+-  var cells     = mesh.cells
+-  var positions = mesh.positions
+-  var data      = new Float32Array(cells.length * 6)
+-  var ptr       = 0
+-  var shapeX    = 0
+-  for(var i=0; i<cells.length; ++i) {
+-    var tri = cells[i]
+-    for(var j=0; j<3; ++j) {
+-      var point = positions[tri[j]]
+-      data[ptr++] = point[0]
+-      data[ptr++] = point[1] + 1.4
+-      shapeX      = Math.max(point[0], shapeX)
++  if(x === 0) {
++    if(y < 0) {
++      return -SMALLEST_DENORM
++    } else {
++      return SMALLEST_DENORM
+     }
+   }
+-  return {
+-    data:  data,
+-    shape: shapeX
+-  }
+-}
+-
+-function textGet(font, text) {
+-  var fontcache = __TEXT_CACHE[font]
+-   if(!fontcache) {
+-     fontcache = __TEXT_CACHE[font] = {
+-       ' ': {
+-         data:   new Float32Array(0),
+-         shape: 0.2
+-       }
+-     }
+-   }
+-   var mesh = fontcache[text]
+-   if(!mesh) {
+-     if(text.length <= 1 || !/\d/.test(text)) {
+-       mesh = fontcache[text] = unwrap(vectorizeText(text, {
+-         triangles:     true,
+-         font:          font,
+-         textAlign:     'left',
+-         textBaseline:  'alphabetic'
+-       }))
+-     } else {
+-       var parts = text.split(/(\d|\s)/)
+-       var buffer = new Array(parts.length)
+-       var bufferSize = 0
+-       var shapeX = 0
+-       for(var i=0; i<parts.length; ++i) {
+-         buffer[i] = textGet(font, parts[i])
+-         bufferSize += buffer[i].data.length
+-         shapeX += buffer[i].shape
+-         if(i>0) {
+-           shapeX += 0.02
+-         }
+-       }
+-
+-       var data = new Float32Array(bufferSize)
+-       var ptr     = 0
+-       var xOffset = -0.5 * shapeX
+-       for(var i=0; i<buffer.length; ++i) {
+-         var bdata = buffer[i].data
+-         for(var j=0; j<bdata.length; j+=2) {
+-           data[ptr++] = bdata[j] + xOffset
+-           data[ptr++] = bdata[j+1]
+-         }
+-         xOffset += buffer[i].shape + 0.02
+-       }
++  var hi = doubleBits.hi(x)
++  var lo = doubleBits.lo(x)
++  if((y > x) === (x > 0)) {
++    if(lo === UINT_MAX) {
++      hi += 1
++      lo = 0
++    } else {
++      lo += 1
++    }
++  } else {
++    if(lo === 0) {
++      lo = UINT_MAX
++      hi -= 1
++    } else {
++      lo -= 1
++    }
++  }
++  return doubleBits.pack(lo, hi)
++}
++},{"double-bits":55}],125:[function(require,module,exports){
++/*!
++ * pad-left <https://github.com/jonschlinkert/pad-left>
++ *
++ * Copyright (c) 2014-2015, Jon Schlinkert.
++ * Licensed under the MIT license.
++ */
+ 
+-       mesh = fontcache[text] = {
+-         data:  data,
+-         shape: shapeX
+-       }
+-     }
+-   }
++'use strict';
+ 
+-   return mesh
+-}
++var repeat = require('repeat-string');
+ 
+-}).call(this,require('_process'))
+-},{"_process":15,"vectorize-text":153}],148:[function(require,module,exports){
+-// TinyColor v1.3.0
+-// https://github.com/bgrins/TinyColor
+-// Brian Grinstead, MIT License
++module.exports = function padLeft(str, num, ch) {
++  ch = typeof ch !== 'undefined' ? (ch + '') : ' ';
++  return repeat(ch, num) + str;
++};
++},{"repeat-string":138}],126:[function(require,module,exports){
++module.exports = function parseUnit(str, out) {
++    if (!out)
++        out = [ 0, '' ]
+ 
+-(function() {
++    str = String(str)
++    var num = parseFloat(str, 10)
++    out[0] = num
++    out[1] = str.match(/[\d.\-\+]*\s*(.*)/)[1] || ''
++    return out
++}
++},{}],127:[function(require,module,exports){
++"use strict"
+ 
+-var trimLeft = /^\s+/,
+-    trimRight = /\s+$/,
+-    tinyCounter = 0,
+-    math = Math,
+-    mathRound = math.round,
+-    mathMin = math.min,
+-    mathMax = math.max,
+-    mathRandom = math.random;
++module.exports = permutationSign
+ 
+-function tinycolor (color, opts) {
++var BRUTE_FORCE_CUTOFF = 32
+ 
+-    color = (color) ? color : '';
+-    opts = opts || { };
++var pool = require("typedarray-pool")
+ 
+-    // If input is already a tinycolor, return itself
+-    if (color instanceof tinycolor) {
+-       return color;
++function permutationSign(p) {
++  var n = p.length
++  if(n < BRUTE_FORCE_CUTOFF) {
++    //Use quadratic algorithm for small n
++    var sgn = 1
++    for(var i=0; i<n; ++i) {
++      for(var j=0; j<i; ++j) {
++        if(p[i] < p[j]) {
++          sgn = -sgn
++        } else if(p[i] === p[j]) {
++          return 0
++        }
++      }
+     }
+-    // If we are called as a function, call using new instead
+-    if (!(this instanceof tinycolor)) {
+-        return new tinycolor(color, opts);
++    return sgn
++  } else {
++    //Otherwise use linear time algorithm
++    var visited = pool.mallocUint8(n)
++    for(var i=0; i<n; ++i) {
++      visited[i] = 0
++    }
++    var sgn = 1
++    for(var i=0; i<n; ++i) {
++      if(!visited[i]) {
++        var count = 1
++        visited[i] = 1
++        for(var j=p[i]; j!==i; j=p[j]) {
++          if(visited[j]) {
++            pool.freeUint8(visited)
++            return 0
++          }
++          count += 1
++          visited[j] = 1
++        }
++        if(!(count & 1)) {
++          sgn = -sgn
++        }
++      }
+     }
++    pool.freeUint8(visited)
++    return sgn
++  }
++}
++},{"typedarray-pool":162}],128:[function(require,module,exports){
++"use strict"
+ 
+-    var rgb = inputToRGB(color);
+-    this._originalInput = color,
+-    this._r = rgb.r,
+-    this._g = rgb.g,
+-    this._b = rgb.b,
+-    this._a = rgb.a,
+-    this._roundA = mathRound(100*this._a) / 100,
+-    this._format = opts.format || rgb.format;
+-    this._gradientType = opts.gradientType;
++var pool = require("typedarray-pool")
++var inverse = require("invert-permutation")
+ 
+-    // Don't let the range of [0,255] come back in [0,1].
+-    // Potentially lose a little bit of precision here, but will fix issues where
+-    // .5 gets interpreted as half of the total, instead of half of 1
+-    // If it was supposed to be 128, this was already taken care of by `inputToRgb`
+-    if (this._r < 1) { this._r = mathRound(this._r); }
+-    if (this._g < 1) { this._g = mathRound(this._g); }
+-    if (this._b < 1) { this._b = mathRound(this._b); }
++function rank(permutation) {
++  var n = permutation.length
++  switch(n) {
++    case 0:
++    case 1:
++      return 0
++    case 2:
++      return permutation[1]
++    default:
++      break
++  }
++  var p = pool.mallocUint32(n)
++  var pinv = pool.mallocUint32(n)
++  var r = 0, s, t, i
++  inverse(permutation, pinv)
++  for(i=0; i<n; ++i) {
++    p[i] = permutation[i]
++  }
++  for(i=n-1; i>0; --i) {
++    t = pinv[i]
++    s = p[i]
++    p[i] = p[t]
++    p[t] = s
++    pinv[i] = pinv[s]
++    pinv[s] = t
++    r = (r + s) * i
++  }
++  pool.freeUint32(pinv)
++  pool.freeUint32(p)
++  return r
++}
+ 
+-    this._ok = rgb.ok;
+-    this._tc_id = tinyCounter++;
++function unrank(n, r, p) {
++  switch(n) {
++    case 0:
++      if(p) { return p }
++      return []
++    case 1:
++      if(p) {
++        p[0] = 0
++        return p
++      } else {
++        return [0]
++      }
++    case 2:
++      if(p) {
++        if(r) {
++          p[0] = 0
++          p[1] = 1
++        } else {
++          p[0] = 1
++          p[1] = 0
++        }
++        return p
++      } else {
++        return r ? [0,1] : [1,0]
++      }
++    default:
++      break
++  }
++  p = p || new Array(n)
++  var s, t, i, nf=1
++  p[0] = 0
++  for(i=1; i<n; ++i) {
++    p[i] = i
++    nf = (nf*i)|0
++  }
++  for(i=n-1; i>0; --i) {
++    s = (r / nf)|0
++    r = (r - s * nf)|0
++    nf = (nf / i)|0
++    t = p[i]|0
++    p[i] = p[s]|0
++    p[s] = t|0
++  }
++  return p
+ }
+ 
+-tinycolor.prototype = {
+-    isDark: function() {
+-        return this.getBrightness() < 128;
+-    },
+-    isLight: function() {
+-        return !this.isDark();
+-    },
+-    isValid: function() {
+-        return this._ok;
+-    },
+-    getOriginalInput: function() {
+-      return this._originalInput;
+-    },
+-    getFormat: function() {
+-        return this._format;
+-    },
+-    getAlpha: function() {
+-        return this._a;
+-    },
+-    getBrightness: function() {
+-        //http://www.w3.org/TR/AERT#color-contrast
+-        var rgb = this.toRgb();
+-        return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
+-    },
+-    getLuminance: function() {
+-        //http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
+-        var rgb = this.toRgb();
+-        var RsRGB, GsRGB, BsRGB, R, G, B;
+-        RsRGB = rgb.r/255;
+-        GsRGB = rgb.g/255;
+-        BsRGB = rgb.b/255;
++exports.rank = rank
++exports.unrank = unrank
+ 
+-        if (RsRGB <= 0.03928) {R = RsRGB / 12.92;} else {R = Math.pow(((RsRGB + 0.055) / 1.055), 2.4);}
+-        if (GsRGB <= 0.03928) {G = GsRGB / 12.92;} else {G = Math.pow(((GsRGB + 0.055) / 1.055), 2.4);}
+-        if (BsRGB <= 0.03928) {B = BsRGB / 12.92;} else {B = Math.pow(((BsRGB + 0.055) / 1.055), 2.4);}
+-        return (0.2126 * R) + (0.7152 * G) + (0.0722 * B);
+-    },
+-    setAlpha: function(value) {
+-        this._a = boundAlpha(value);
+-        this._roundA = mathRound(100*this._a) / 100;
+-        return this;
+-    },
+-    toHsv: function() {
+-        var hsv = rgbToHsv(this._r, this._g, this._b);
+-        return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: this._a };
+-    },
+-    toHsvString: function() {
+-        var hsv = rgbToHsv(this._r, this._g, this._b);
+-        var h = mathRound(hsv.h * 360), s = mathRound(hsv.s * 100), v = mathRound(hsv.v * 100);
+-        return (this._a == 1) ?
+-          "hsv("  + h + ", " + s + "%, " + v + "%)" :
+-          "hsva(" + h + ", " + s + "%, " + v + "%, "+ this._roundA + ")";
+-    },
+-    toHsl: function() {
+-        var hsl = rgbToHsl(this._r, this._g, this._b);
+-        return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: this._a };
+-    },
+-    toHslString: function() {
+-        var hsl = rgbToHsl(this._r, this._g, this._b);
+-        var h = mathRound(hsl.h * 360), s = mathRound(hsl.s * 100), l = mathRound(hsl.l * 100);
+-        return (this._a == 1) ?
+-          "hsl("  + h + ", " + s + "%, " + l + "%)" :
+-          "hsla(" + h + ", " + s + "%, " + l + "%, "+ this._roundA + ")";
+-    },
+-    toHex: function(allow3Char) {
+-        return rgbToHex(this._r, this._g, this._b, allow3Char);
+-    },
+-    toHexString: function(allow3Char) {
+-        return '#' + this.toHex(allow3Char);
+-    },
+-    toHex8: function() {
+-        return rgbaToHex(this._r, this._g, this._b, this._a);
+-    },
+-    toHex8String: function() {
+-        return '#' + this.toHex8();
+-    },
+-    toRgb: function() {
+-        return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
+-    },
+-    toRgbString: function() {
+-        return (this._a == 1) ?
+-          "rgb("  + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ")" :
+-          "rgba(" + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ", " + this._roundA + ")";
+-    },
+-    toPercentageRgb: function() {
+-        return { r: mathRound(bound01(this._r, 255) * 100) + "%", g: mathRound(bound01(this._g, 255) * 100) + "%", b: mathRound(bound01(this._b, 255) * 100) + "%", a: this._a };
+-    },
+-    toPercentageRgbString: function() {
+-        return (this._a == 1) ?
+-          "rgb("  + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%)" :
+-          "rgba(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%, " + this._roundA + ")";
+-    },
+-    toName: function() {
+-        if (this._a === 0) {
+-            return "transparent";
+-        }
++},{"invert-permutation":115,"typedarray-pool":162}],129:[function(require,module,exports){
++"use strict"
+ 
+-        if (this._a < 1) {
+-            return false;
+-        }
++module.exports = planarDual
+ 
+-        return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
+-    },
+-    toFilter: function(secondColor) {
+-        var hex8String = '#' + rgbaToHex(this._r, this._g, this._b, this._a);
+-        var secondHex8String = hex8String;
+-        var gradientType = this._gradientType ? "GradientType = 1, " : "";
++var compareAngle = require("compare-angle")
+ 
+-        if (secondColor) {
+-            var s = tinycolor(secondColor);
+-            secondHex8String = s.toHex8String();
+-        }
++function planarDual(cells, positions) {
+ 
+-        return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
+-    },
+-    toString: function(format) {
+-        var formatSet = !!format;
+-        format = format || this._format;
++  var numVertices = positions.length|0
++  var numEdges = cells.length
++  var adj = [new Array(numVertices), new Array(numVertices)]
++  for(var i=0; i<numVertices; ++i) {
++    adj[0][i] = []
++    adj[1][i] = []
++  }
++  for(var i=0; i<numEdges; ++i) {
++    var c = cells[i]
++    adj[0][c[0]].push(c)
++    adj[1][c[1]].push(c)
++  }
+ 
+-        var formattedString = false;
+-        var hasAlpha = this._a < 1 && this._a >= 0;
+-        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "name");
++  var cycles = []
+ 
+-        if (needsAlphaFormat) {
+-            // Special case for "transparent", all other non-alpha formats
+-            // will return rgba when there is transparency.
+-            if (format === "name" && this._a === 0) {
+-                return this.toName();
+-            }
+-            return this.toRgbString();
+-        }
+-        if (format === "rgb") {
+-            formattedString = this.toRgbString();
+-        }
+-        if (format === "prgb") {
+-            formattedString = this.toPercentageRgbString();
+-        }
+-        if (format === "hex" || format === "hex6") {
+-            formattedString = this.toHexString();
+-        }
+-        if (format === "hex3") {
+-            formattedString = this.toHexString(true);
+-        }
+-        if (format === "hex8") {
+-            formattedString = this.toHex8String();
+-        }
+-        if (format === "name") {
+-            formattedString = this.toName();
+-        }
+-        if (format === "hsl") {
+-            formattedString = this.toHslString();
+-        }
+-        if (format === "hsv") {
+-            formattedString = this.toHsvString();
+-        }
++  //Add isolated vertices as trivial case
++  for(var i=0; i<numVertices; ++i) {
++    if(adj[0][i].length + adj[1][i].length === 0) {
++      cycles.push( [i] )
++    }
++  }
+ 
+-        return formattedString || this.toHexString();
+-    },
+-    clone: function() {
+-        return tinycolor(this.toString());
+-    },
++  //Remove a half edge
++  function cut(c, i) {
++    var a = adj[i][c[i]]
++    a.splice(a.indexOf(c), 1)
++  }
+ 
+-    _applyModification: function(fn, args) {
+-        var color = fn.apply(null, [this].concat([].slice.call(args)));
+-        this._r = color._r;
+-        this._g = color._g;
+-        this._b = color._b;
+-        this.setAlpha(color._a);
+-        return this;
+-    },
+-    lighten: function() {
+-        return this._applyModification(lighten, arguments);
+-    },
+-    brighten: function() {
+-        return this._applyModification(brighten, arguments);
+-    },
+-    darken: function() {
+-        return this._applyModification(darken, arguments);
+-    },
+-    desaturate: function() {
+-        return this._applyModification(desaturate, arguments);
+-    },
+-    saturate: function() {
+-        return this._applyModification(saturate, arguments);
+-    },
+-    greyscale: function() {
+-        return this._applyModification(greyscale, arguments);
+-    },
+-    spin: function() {
+-        return this._applyModification(spin, arguments);
+-    },
++  //Find next vertex and cut edge
++  function next(a, b, noCut) {
++    var nextCell, nextVertex, nextDir
++    for(var i=0; i<2; ++i) {
++      if(adj[i][b].length > 0) {
++        nextCell = adj[i][b][0]
++        nextDir = i
++        break
++      }
++    }
++    nextVertex = nextCell[nextDir^1]
+ 
+-    _applyCombination: function(fn, args) {
+-        return fn.apply(null, [this].concat([].slice.call(args)));
+-    },
+-    analogous: function() {
+-        return this._applyCombination(analogous, arguments);
+-    },
+-    complement: function() {
+-        return this._applyCombination(complement, arguments);
+-    },
+-    monochromatic: function() {
+-        return this._applyCombination(monochromatic, arguments);
+-    },
+-    splitcomplement: function() {
+-        return this._applyCombination(splitcomplement, arguments);
+-    },
+-    triad: function() {
+-        return this._applyCombination(triad, arguments);
+-    },
+-    tetrad: function() {
+-        return this._applyCombination(tetrad, arguments);
++    for(var dir=0; dir<2; ++dir) {
++      var nbhd = adj[dir][b]
++      for(var k=0; k<nbhd.length; ++k) {
++        var e = nbhd[k]
++        var p = e[dir^1]
++        var cmp = compareAngle(
++            positions[a], 
++            positions[b], 
++            positions[nextVertex],
++            positions[p])
++        if(cmp > 0) {
++          nextCell = e
++          nextVertex = p
++          nextDir = dir
++        }
++      }
+     }
+-};
++    if(noCut) {
++      return nextVertex
++    }
++    if(nextCell) {
++      cut(nextCell, nextDir)
++    }
++    return nextVertex
++  }
+ 
+-// If input is an object, force 1 into "1.0" to handle ratios properly
+-// String input requires "1.0" as input, so 1 will be treated as 1
+-tinycolor.fromRatio = function(color, opts) {
+-    if (typeof color == "object") {
+-        var newColor = {};
+-        for (var i in color) {
+-            if (color.hasOwnProperty(i)) {
+-                if (i === "a") {
+-                    newColor[i] = color[i];
+-                }
+-                else {
+-                    newColor[i] = convertToPercentage(color[i]);
+-                }
+-            }
++  function extractCycle(v, dir) {
++    var e0 = adj[dir][v][0]
++    var cycle = [v]
++    cut(e0, dir)
++    var u = e0[dir^1]
++    var d0 = dir
++    while(true) {
++      while(u !== v) {
++        cycle.push(u)
++        u = next(cycle[cycle.length-2], u, false)
++      }
++      if(adj[0][v].length + adj[1][v].length === 0) {
++        break
++      }
++      var a = cycle[cycle.length-1]
++      var b = v
++      var c = cycle[1]
++      var d = next(a, b, true)
++      if(compareAngle(positions[a], positions[b], positions[c], positions[d]) < 0) {
++        break
++      }
++      cycle.push(v)
++      u = next(a, b)
++    }
++    return cycle
++  }
++
++  function shouldGlue(pcycle, ncycle) {
++    return (ncycle[1] === ncycle[ncycle.length-1])
++  }
++
++  for(var i=0; i<numVertices; ++i) {
++    for(var j=0; j<2; ++j) {
++      var pcycle = []
++      while(adj[j][i].length > 0) {
++        var ni = adj[0][i].length
++        var ncycle = extractCycle(i,j)
++        if(shouldGlue(pcycle, ncycle)) {
++          //Glue together trivial cycles
++          pcycle.push.apply(pcycle, ncycle)
++        } else {
++          if(pcycle.length > 0) {
++            cycles.push(pcycle)
++          }
++          pcycle = ncycle
+         }
+-        color = newColor;
++      }
++      if(pcycle.length > 0) {
++        cycles.push(pcycle)
++      }
+     }
++  }
+ 
+-    return tinycolor(color, opts);
+-};
++  //Combine paths and loops together
++  return cycles
++}
++},{"compare-angle":48}],130:[function(require,module,exports){
++'use strict'
+ 
+-// Given a string or object, convert that input to RGB
+-// Possible string inputs:
+-//
+-//     "red"
+-//     "#f00" or "f00"
+-//     "#ff0000" or "ff0000"
+-//     "#ff000000" or "ff000000"
+-//     "rgb 255 0 0" or "rgb (255, 0, 0)"
+-//     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
+-//     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
+-//     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
+-//     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
+-//     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
+-//     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
+-//
+-function inputToRGB(color) {
++module.exports = trimLeaves
+ 
+-    var rgb = { r: 0, g: 0, b: 0 };
+-    var a = 1;
+-    var ok = false;
+-    var format = false;
++var e2a = require('edges-to-adjacency-list')
+ 
+-    if (typeof color == "string") {
+-        color = stringInputToObject(color);
+-    }
++function trimLeaves(edges, positions) {
++  var adj = e2a(edges, positions.length)
++  var live = new Array(positions.length)
++  var nbhd = new Array(positions.length)
+ 
+-    if (typeof color == "object") {
+-        if (color.hasOwnProperty("r") && color.hasOwnProperty("g") && color.hasOwnProperty("b")) {
+-            rgb = rgbToRgb(color.r, color.g, color.b);
+-            ok = true;
+-            format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
+-        }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("v")) {
+-            color.s = convertToPercentage(color.s);
+-            color.v = convertToPercentage(color.v);
+-            rgb = hsvToRgb(color.h, color.s, color.v);
+-            ok = true;
+-            format = "hsv";
+-        }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("l")) {
+-            color.s = convertToPercentage(color.s);
+-            color.l = convertToPercentage(color.l);
+-            rgb = hslToRgb(color.h, color.s, color.l);
+-            ok = true;
+-            format = "hsl";
+-        }
++  var dead = []
++  for(var i=0; i<positions.length; ++i) {
++    var count = adj[i].length
++    nbhd[i] = count
++    live[i] = true
++    if(count <= 1) {
++      dead.push(i)
++    }
++  }
+ 
+-        if (color.hasOwnProperty("a")) {
+-            a = color.a;
+-        }
++  while(dead.length > 0) {
++    var v = dead.pop()
++    live[v] = false
++    var n = adj[v]
++    for(var i=0; i<n.length; ++i) {
++      var u = n[i]
++      if(--nbhd[u] === 0) {
++        dead.push(u)
++      }
+     }
++  }
+ 
+-    a = boundAlpha(a);
++  var newIndex = new Array(positions.length)
++  var npositions = []
++  for(var i=0; i<positions.length; ++i) {
++    if(live[i]) {
++      var v = npositions.length
++      newIndex[i] = v
++      npositions.push(positions[i])
++    } else {
++      newIndex[i] = -1
++    }
++  }
+ 
+-    return {
+-        ok: ok,
+-        format: color.format || format,
+-        r: mathMin(255, mathMax(rgb.r, 0)),
+-        g: mathMin(255, mathMax(rgb.g, 0)),
+-        b: mathMin(255, mathMax(rgb.b, 0)),
+-        a: a
+-    };
++  var nedges = []
++  for(var i=0; i<edges.length; ++i) {
++    var e = edges[i]
++    if(live[e[0]] && live[e[1]]) {
++      nedges.push([ newIndex[e[0]], newIndex[e[1]] ])
++    }
++  }
++  
++  return [ nedges, npositions ]
+ }
++},{"edges-to-adjacency-list":57}],131:[function(require,module,exports){
++'use strict'
+ 
++module.exports = planarGraphToPolyline
+ 
+-// Conversion Functions
+-// --------------------
++var e2a = require('edges-to-adjacency-list')
++var planarDual = require('planar-dual')
++var preprocessPolygon = require('point-in-big-polygon')
++var twoProduct = require('two-product')
++var robustSum = require('robust-sum')
++var uniq = require('uniq')
++var trimLeaves = require('./lib/trim-leaves')
+ 
+-// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
+-// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>
++function makeArray(length, fill) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = fill
++  }
++  return result
++}
+ 
+-// `rgbToRgb`
+-// Handle bounds / percentage checking to conform to CSS color spec
+-// <http://www.w3.org/TR/css3-color/>
+-// *Assumes:* r, g, b in [0, 255] or [0, 1]
+-// *Returns:* { r, g, b } in [0, 255]
+-function rgbToRgb(r, g, b){
+-    return {
+-        r: bound01(r, 255) * 255,
+-        g: bound01(g, 255) * 255,
+-        b: bound01(b, 255) * 255
+-    };
++function makeArrayOfArrays(length) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = []
++  }
++  return result
+ }
+ 
+-// `rgbToHsl`
+-// Converts an RGB color value to HSL.
+-// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
+-// *Returns:* { h, s, l } in [0,1]
+-function rgbToHsl(r, g, b) {
+ 
+-    r = bound01(r, 255);
+-    g = bound01(g, 255);
+-    b = bound01(b, 255);
++function planarGraphToPolyline(edges, positions) {
+ 
+-    var max = mathMax(r, g, b), min = mathMin(r, g, b);
+-    var h, s, l = (max + min) / 2;
++  //Trim leaves
++  var result = trimLeaves(edges, positions)
++  edges = result[0]
++  positions = result[1]
+ 
+-    if(max == min) {
+-        h = s = 0; // achromatic
+-    }
+-    else {
+-        var d = max - min;
+-        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
+-        switch(max) {
+-            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+-            case g: h = (b - r) / d + 2; break;
+-            case b: h = (r - g) / d + 4; break;
+-        }
++  var numVertices = positions.length
++  var numEdges = edges.length
+ 
+-        h /= 6;
++  //Calculate adjacency list, check manifold
++  var adj = e2a(edges, positions.length)
++  for(var i=0; i<numVertices; ++i) {
++    if(adj[i].length % 2 === 1) {
++      throw new Error('planar-graph-to-polyline: graph must be manifold')
+     }
++  }
+ 
+-    return { h: h, s: s, l: l };
+-}
+-
+-// `hslToRgb`
+-// Converts an HSL color value to RGB.
+-// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
+-// *Returns:* { r, g, b } in the set [0, 255]
+-function hslToRgb(h, s, l) {
+-    var r, g, b;
+-
+-    h = bound01(h, 360);
+-    s = bound01(s, 100);
+-    l = bound01(l, 100);
++  //Get faces
++  var faces = planarDual(edges, positions)
+ 
+-    function hue2rgb(p, q, t) {
+-        if(t < 0) t += 1;
+-        if(t > 1) t -= 1;
+-        if(t < 1/6) return p + (q - p) * 6 * t;
+-        if(t < 1/2) return q;
+-        if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
+-        return p;
++  //Check orientation of a polygon using exact arithmetic
++  function ccw(c) {
++    var n = c.length
++    var area = [0]
++    for(var j=0; j<n; ++j) {
++      var a = positions[c[j]]
++      var b = positions[c[(j+1)%n]]
++      var t00 = twoProduct(-a[0], a[1])
++      var t01 = twoProduct(-a[0], b[1])
++      var t10 = twoProduct( b[0], a[1])
++      var t11 = twoProduct( b[0], b[1])
++      area = robustSum(area, robustSum(robustSum(t00, t01), robustSum(t10, t11)))
+     }
++    return area[area.length-1] > 0
++  }
+ 
+-    if(s === 0) {
+-        r = g = b = l; // achromatic
++  //Extract all clockwise faces
++  faces = faces.filter(ccw)
++
++  //Detect which loops are contained in one another to handle parent-of relation
++  var numFaces = faces.length
++  var parent = new Array(numFaces)
++  var containment = new Array(numFaces)
++  for(var i=0; i<numFaces; ++i) {
++    parent[i] = i
++    var row = new Array(numFaces)
++    var loopVertices = faces[i].map(function(v) {
++      return positions[v]
++    })
++    var pmc = preprocessPolygon([loopVertices])
++    var count = 0
++    outer:
++    for(var j=0; j<numFaces; ++j) {
++      row[j] = 0
++      if(i === j) {
++        continue
++      }
++      var c = faces[j]
++      var n = c.length
++      for(var k=0; k<n; ++k) {
++        var d = pmc(positions[c[k]])
++        if(d !== 0) {
++          if(d < 0) {
++            row[j] = 1
++            count += 1
++          }
++          continue outer
++        }
++      }
++      row[j] = 1
++      count += 1
+     }
+-    else {
+-        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
+-        var p = 2 * l - q;
+-        r = hue2rgb(p, q, h + 1/3);
+-        g = hue2rgb(p, q, h);
+-        b = hue2rgb(p, q, h - 1/3);
++    containment[i] = [count, i, row]
++  }
++  containment.sort(function(a,b) {
++    return b[0] - a[0]
++  })
++  for(var i=0; i<numFaces; ++i) {
++    var row = containment[i]
++    var idx = row[1]
++    var children = row[2]
++    for(var j=0; j<numFaces; ++j) {
++      if(children[j]) {
++        parent[j] = idx
++      }
+     }
++  }
+ 
+-    return { r: r * 255, g: g * 255, b: b * 255 };
+-}
+-
+-// `rgbToHsv`
+-// Converts an RGB color value to HSV
+-// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
+-// *Returns:* { h, s, v } in [0,1]
+-function rgbToHsv(r, g, b) {
++  //Initialize face adjacency list
++  var fadj = makeArrayOfArrays(numFaces)
++  for(var i=0; i<numFaces; ++i) {
++    fadj[i].push(parent[i])
++    fadj[parent[i]].push(i)
++  }
+ 
+-    r = bound01(r, 255);
+-    g = bound01(g, 255);
+-    b = bound01(b, 255);
++  //Build adjacency matrix for edges
++  var edgeAdjacency = {}
++  var internalVertices = makeArray(numVertices, false)
++  for(var i=0; i<numFaces; ++i) {
++    var c = faces[i]
++    var n = c.length
++    for(var j=0; j<n; ++j) {
++      var a = c[j]
++      var b = c[(j+1)%n]
++      var key = Math.min(a,b) + ":" + Math.max(a,b)
++      if(key in edgeAdjacency) {
++        var neighbor = edgeAdjacency[key]
++        fadj[neighbor].push(i)
++        fadj[i].push(neighbor)
++        internalVertices[a] = internalVertices[b] = true
++      } else {
++        edgeAdjacency[key] = i
++      }
++    }
++  }
+ 
+-    var max = mathMax(r, g, b), min = mathMin(r, g, b);
+-    var h, s, v = max;
++  function sharedBoundary(c) {
++    var n = c.length
++    for(var i=0; i<n; ++i) {
++      if(!internalVertices[c[i]]) {
++        return false
++      }
++    }
++    return true
++  }
+ 
+-    var d = max - min;
+-    s = max === 0 ? 0 : d / max;
++  var toVisit = []
++  var parity = makeArray(numFaces, -1)
++  for(var i=0; i<numFaces; ++i) {
++    if(parent[i] === i && !sharedBoundary(faces[i])) {
++      toVisit.push(i)
++      parity[i] = 0
++    } else {
++      parity[i] = -1
++    }
++  }
+ 
+-    if(max == min) {
+-        h = 0; // achromatic
++  //Using face adjacency, classify faces as in/out
++  var result = []
++  while(toVisit.length > 0) {
++    var top = toVisit.pop()
++    var nbhd = fadj[top]
++    uniq(nbhd, function(a,b) {
++      return a-b
++    })
++    var nnbhr = nbhd.length
++    var p = parity[top]
++    var polyline
++    if(p === 0) {
++      var c = faces[top]
++      polyline = [c]
+     }
+-    else {
+-        switch(max) {
+-            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+-            case g: h = (b - r) / d + 2; break;
+-            case b: h = (r - g) / d + 4; break;
++    for(var i=0; i<nnbhr; ++i) {
++      var f = nbhd[i]
++      if(parity[f] >= 0) {
++        continue
++      }
++      parity[f] = p^1
++      toVisit.push(f)
++      if(p === 0) {
++        var c = faces[f]
++        if(!sharedBoundary(c)) {
++          c.reverse()
++          polyline.push(c)
+         }
+-        h /= 6;
++      }
+     }
+-    return { h: h, s: s, v: v };
+-}
+-
+-// `hsvToRgb`
+-// Converts an HSV color value to RGB.
+-// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
+-// *Returns:* { r, g, b } in the set [0, 255]
+- function hsvToRgb(h, s, v) {
+-
+-    h = bound01(h, 360) * 6;
+-    s = bound01(s, 100);
+-    v = bound01(v, 100);
+-
+-    var i = math.floor(h),
+-        f = h - i,
+-        p = v * (1 - s),
+-        q = v * (1 - f * s),
+-        t = v * (1 - (1 - f) * s),
+-        mod = i % 6,
+-        r = [v, q, p, p, t, v][mod],
+-        g = [t, v, v, q, p, p][mod],
+-        b = [p, p, t, v, v, q][mod];
++    if(p === 0) {
++      result.push(polyline)
++    }
++  }
+ 
+-    return { r: r * 255, g: g * 255, b: b * 255 };
++  return result
+ }
++},{"./lib/trim-leaves":130,"edges-to-adjacency-list":57,"planar-dual":129,"point-in-big-polygon":132,"robust-sum":145,"two-product":160,"uniq":164}],132:[function(require,module,exports){
++module.exports = preprocessPolygon
+ 
+-// `rgbToHex`
+-// Converts an RGB color to hex
+-// Assumes r, g, and b are contained in the set [0, 255]
+-// Returns a 3 or 6 character hex
+-function rgbToHex(r, g, b, allow3Char) {
++var orient = require('robust-orientation')[3]
++var makeSlabs = require('slab-decomposition')
++var makeIntervalTree = require('interval-tree-1d')
++var bsearch = require('binary-search-bounds')
+ 
+-    var hex = [
+-        pad2(mathRound(r).toString(16)),
+-        pad2(mathRound(g).toString(16)),
+-        pad2(mathRound(b).toString(16))
+-    ];
++function visitInterval() {
++  return true
++}
+ 
+-    // Return a 3 character hex if possible
+-    if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
+-        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
++function intervalSearch(table) {
++  return function(x, y) {
++    var tree = table[x]
++    if(tree) {
++      return !!tree.queryPoint(y, visitInterval)
+     }
+-
+-    return hex.join("");
++    return false
++  }
+ }
+ 
+-// `rgbaToHex`
+-// Converts an RGBA color plus alpha transparency to hex
+-// Assumes r, g, b and a are contained in the set [0, 255]
+-// Returns an 8 character hex
+-function rgbaToHex(r, g, b, a) {
+-
+-    var hex = [
+-        pad2(convertDecimalToHex(a)),
+-        pad2(mathRound(r).toString(16)),
+-        pad2(mathRound(g).toString(16)),
+-        pad2(mathRound(b).toString(16))
+-    ];
+-
+-    return hex.join("");
++function buildVerticalIndex(segments) {
++  var table = {}
++  for(var i=0; i<segments.length; ++i) {
++    var s = segments[i]
++    var x = s[0][0]
++    var y0 = s[0][1]
++    var y1 = s[1][1]
++    var p = [ Math.min(y0, y1), Math.max(y0, y1) ]
++    if(x in table) {
++      table[x].push(p)
++    } else {
++      table[x] = [ p ]
++    }
++  }
++  var intervalTable = {}
++  var keys = Object.keys(table)
++  for(var i=0; i<keys.length; ++i) {
++    var segs = table[keys[i]]
++    intervalTable[keys[i]] = makeIntervalTree(segs)
++  }
++  return intervalSearch(intervalTable)
+ }
+ 
+-// `equals`
+-// Can be called with any tinycolor input
+-tinycolor.equals = function (color1, color2) {
+-    if (!color1 || !color2) { return false; }
+-    return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
+-};
+-
+-tinycolor.random = function() {
+-    return tinycolor.fromRatio({
+-        r: mathRandom(),
+-        g: mathRandom(),
+-        b: mathRandom()
+-    });
+-};
+-
+-
+-// Modification Functions
+-// ----------------------
+-// Thanks to less.js for some of the basics here
+-// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>
+-
+-function desaturate(color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.s -= amount / 100;
+-    hsl.s = clamp01(hsl.s);
+-    return tinycolor(hsl);
++function buildSlabSearch(slabs, coordinates) {
++  return function(p) {
++    var bucket = bsearch.le(coordinates, p[0])
++    if(bucket < 0) {
++      return 1
++    }
++    var root = slabs[bucket]
++    if(!root) {
++      if(bucket > 0 && coordinates[bucket] === p[0]) {
++        root = slabs[bucket-1]
++      } else {
++        return 1
++      }
++    }
++    var lastOrientation = 1
++    while(root) {
++      var s = root.key
++      var o = orient(p, s[0], s[1])
++      if(s[0][0] < s[1][0]) {
++        if(o < 0) {
++          root = root.left
++        } else if(o > 0) {
++          lastOrientation = -1
++          root = root.right
++        } else {
++          return 0
++        }
++      } else {
++        if(o > 0) {
++          root = root.left
++        } else if(o < 0) {
++          lastOrientation = 1
++          root = root.right
++        } else {
++          return 0
++        }
++      }
++    }
++    return lastOrientation
++  }
+ }
+ 
+-function saturate(color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.s += amount / 100;
+-    hsl.s = clamp01(hsl.s);
+-    return tinycolor(hsl);
++function classifyEmpty(p) {
++  return 1
+ }
+ 
+-function greyscale(color) {
+-    return tinycolor(color).desaturate(100);
++function createClassifyVertical(testVertical) {
++  return function classify(p) {
++    if(testVertical(p[0], p[1])) {
++      return 0
++    }
++    return 1
++  }
+ }
+ 
+-function lighten (color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.l += amount / 100;
+-    hsl.l = clamp01(hsl.l);
+-    return tinycolor(hsl);
++function createClassifyPointDegen(testVertical, testNormal) {
++  return function classify(p) {
++    if(testVertical(p[0], p[1])) {
++      return 0
++    }
++    return testNormal(p)
++  }
+ }
+ 
+-function brighten(color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var rgb = tinycolor(color).toRgb();
+-    rgb.r = mathMax(0, mathMin(255, rgb.r - mathRound(255 * - (amount / 100))));
+-    rgb.g = mathMax(0, mathMin(255, rgb.g - mathRound(255 * - (amount / 100))));
+-    rgb.b = mathMax(0, mathMin(255, rgb.b - mathRound(255 * - (amount / 100))));
+-    return tinycolor(rgb);
+-}
++function preprocessPolygon(loops) {
++  //Compute number of loops
++  var numLoops = loops.length
+ 
+-function darken (color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.l -= amount / 100;
+-    hsl.l = clamp01(hsl.l);
+-    return tinycolor(hsl);
+-}
++  //Unpack segments
++  var segments = []
++  var vsegments = []
++  var ptr = 0
++  for(var i=0; i<numLoops; ++i) {
++    var loop = loops[i]
++    var numVertices = loop.length
++    for(var s=numVertices-1,t=0; t<numVertices; s=(t++)) {
++      var a = loop[s]
++      var b = loop[t]
++      if(a[0] === b[0]) {
++        vsegments.push([a,b])
++      } else {
++        segments.push([a,b])
++      }
++    }
++  }
+ 
+-// Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
+-// Values outside of this range will be wrapped into this range.
+-function spin(color, amount) {
+-    var hsl = tinycolor(color).toHsl();
+-    var hue = (mathRound(hsl.h) + amount) % 360;
+-    hsl.h = hue < 0 ? 360 + hue : hue;
+-    return tinycolor(hsl);
+-}
++  //Degenerate case: All loops are empty
++  if(segments.length === 0) {
++    if(vsegments.length === 0) {
++      return classifyEmpty
++    } else {
++      return createClassifyVertical(buildVerticalIndex(vsegments))
++    }
++  }
+ 
+-// Combination Functions
+-// ---------------------
+-// Thanks to jQuery xColor for some of the ideas behind these
+-// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>
++  //Build slab decomposition
++  var slabs = makeSlabs(segments)
++  var testSlab = buildSlabSearch(slabs.slabs, slabs.coordinates)
+ 
+-function complement(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.h = (hsl.h + 180) % 360;
+-    return tinycolor(hsl);
++  if(vsegments.length === 0) {
++    return testSlab
++  } else {
++    return createClassifyPointDegen(
++      buildVerticalIndex(vsegments),
++      testSlab)
++  }
+ }
++},{"binary-search-bounds":27,"interval-tree-1d":114,"robust-orientation":140,"slab-decomposition":152}],133:[function(require,module,exports){
++// shim for using process in browser
++var process = module.exports = {};
+ 
+-function triad(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    var h = hsl.h;
+-    return [
+-        tinycolor(color),
+-        tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
+-        tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
+-    ];
+-}
++// cached from whatever global is present so that test runners that stub it
++// don't break things.  But we need to wrap it in a try catch in case it is
++// wrapped in strict mode code which doesn't define any globals.  It's inside a
++// function because try/catches deoptimize in certain engines.
+ 
+-function tetrad(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    var h = hsl.h;
+-    return [
+-        tinycolor(color),
+-        tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
+-        tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
+-        tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
+-    ];
+-}
++var cachedSetTimeout;
++var cachedClearTimeout;
+ 
+-function splitcomplement(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    var h = hsl.h;
+-    return [
+-        tinycolor(color),
+-        tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l}),
+-        tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l})
+-    ];
++function defaultSetTimout() {
++    throw new Error('setTimeout has not been defined');
+ }
+-
+-function analogous(color, results, slices) {
+-    results = results || 6;
+-    slices = slices || 30;
+-
+-    var hsl = tinycolor(color).toHsl();
+-    var part = 360 / slices;
+-    var ret = [tinycolor(color)];
+-
+-    for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results; ) {
+-        hsl.h = (hsl.h + part) % 360;
+-        ret.push(tinycolor(hsl));
+-    }
+-    return ret;
++function defaultClearTimeout () {
++    throw new Error('clearTimeout has not been defined');
+ }
+-
+-function monochromatic(color, results) {
+-    results = results || 6;
+-    var hsv = tinycolor(color).toHsv();
+-    var h = hsv.h, s = hsv.s, v = hsv.v;
+-    var ret = [];
+-    var modification = 1 / results;
+-
+-    while (results--) {
+-        ret.push(tinycolor({ h: h, s: s, v: v}));
+-        v = (v + modification) % 1;
++(function () {
++    try {
++        if (typeof setTimeout === 'function') {
++            cachedSetTimeout = setTimeout;
++        } else {
++            cachedSetTimeout = defaultSetTimout;
++        }
++    } catch (e) {
++        cachedSetTimeout = defaultSetTimout;
++    }
++    try {
++        if (typeof clearTimeout === 'function') {
++            cachedClearTimeout = clearTimeout;
++        } else {
++            cachedClearTimeout = defaultClearTimeout;
++        }
++    } catch (e) {
++        cachedClearTimeout = defaultClearTimeout;
++    }
++} ())
++function runTimeout(fun) {
++    if (cachedSetTimeout === setTimeout) {
++        //normal enviroments in sane situations
++        return setTimeout(fun, 0);
++    }
++    // if setTimeout wasn't available but was latter defined
++    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
++        cachedSetTimeout = setTimeout;
++        return setTimeout(fun, 0);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedSetTimeout(fun, 0);
++    } catch(e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
++            return cachedSetTimeout.call(null, fun, 0);
++        } catch(e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
++            return cachedSetTimeout.call(this, fun, 0);
++        }
+     }
+ 
+-    return ret;
+-}
+-
+-// Utility Functions
+-// ---------------------
+ 
+-tinycolor.mix = function(color1, color2, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 50);
++}
++function runClearTimeout(marker) {
++    if (cachedClearTimeout === clearTimeout) {
++        //normal enviroments in sane situations
++        return clearTimeout(marker);
++    }
++    // if clearTimeout wasn't available but was latter defined
++    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
++        cachedClearTimeout = clearTimeout;
++        return clearTimeout(marker);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedClearTimeout(marker);
++    } catch (e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
++            return cachedClearTimeout.call(null, marker);
++        } catch (e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
++            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
++            return cachedClearTimeout.call(this, marker);
++        }
++    }
+ 
+-    var rgb1 = tinycolor(color1).toRgb();
+-    var rgb2 = tinycolor(color2).toRgb();
+ 
+-    var p = amount / 100;
+-    var w = p * 2 - 1;
+-    var a = rgb2.a - rgb1.a;
+ 
+-    var w1;
++}
++var queue = [];
++var draining = false;
++var currentQueue;
++var queueIndex = -1;
+ 
+-    if (w * a == -1) {
+-        w1 = w;
++function cleanUpNextTick() {
++    if (!draining || !currentQueue) {
++        return;
++    }
++    draining = false;
++    if (currentQueue.length) {
++        queue = currentQueue.concat(queue);
+     } else {
+-        w1 = (w + a) / (1 + w * a);
++        queueIndex = -1;
++    }
++    if (queue.length) {
++        drainQueue();
+     }
++}
+ 
+-    w1 = (w1 + 1) / 2;
++function drainQueue() {
++    if (draining) {
++        return;
++    }
++    var timeout = runTimeout(cleanUpNextTick);
++    draining = true;
+ 
+-    var w2 = 1 - w1;
++    var len = queue.length;
++    while(len) {
++        currentQueue = queue;
++        queue = [];
++        while (++queueIndex < len) {
++            if (currentQueue) {
++                currentQueue[queueIndex].run();
++            }
++        }
++        queueIndex = -1;
++        len = queue.length;
++    }
++    currentQueue = null;
++    draining = false;
++    runClearTimeout(timeout);
++}
+ 
+-    var rgba = {
+-        r: rgb2.r * w1 + rgb1.r * w2,
+-        g: rgb2.g * w1 + rgb1.g * w2,
+-        b: rgb2.b * w1 + rgb1.b * w2,
+-        a: rgb2.a * p  + rgb1.a * (1 - p)
+-    };
++process.nextTick = function (fun) {
++    var args = new Array(arguments.length - 1);
++    if (arguments.length > 1) {
++        for (var i = 1; i < arguments.length; i++) {
++            args[i - 1] = arguments[i];
++        }
++    }
++    queue.push(new Item(fun, args));
++    if (queue.length === 1 && !draining) {
++        runTimeout(drainQueue);
++    }
++};
+ 
+-    return tinycolor(rgba);
++// v8 likes predictible objects
++function Item(fun, array) {
++    this.fun = fun;
++    this.array = array;
++}
++Item.prototype.run = function () {
++    this.fun.apply(null, this.array);
+ };
++process.title = 'browser';
++process.browser = true;
++process.env = {};
++process.argv = [];
++process.version = ''; // empty string to avoid regexp issues
++process.versions = {};
+ 
++function noop() {}
+ 
+-// Readability Functions
+-// ---------------------
+-// <http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef (WCAG Version 2)
++process.on = noop;
++process.addListener = noop;
++process.once = noop;
++process.off = noop;
++process.removeListener = noop;
++process.removeAllListeners = noop;
++process.emit = noop;
+ 
+-// `contrast`
+-// Analyze the 2 colors and returns the color contrast defined by (WCAG Version 2)
+-tinycolor.readability = function(color1, color2) {
+-    var c1 = tinycolor(color1);
+-    var c2 = tinycolor(color2);
+-    return (Math.max(c1.getLuminance(),c2.getLuminance())+0.05) / (Math.min(c1.getLuminance(),c2.getLuminance())+0.05);
++process.binding = function (name) {
++    throw new Error('process.binding is not supported');
+ };
+ 
+-// `isReadable`
+-// Ensure that foreground and background color combinations meet WCAG2 guidelines.
+-// The third argument is an optional Object.
+-//      the 'level' property states 'AA' or 'AAA' - if missing or invalid, it defaults to 'AA';
+-//      the 'size' property states 'large' or 'small' - if missing or invalid, it defaults to 'small'.
+-// If the entire object is absent, isReadable defaults to {level:"AA",size:"small"}.
+-
+-// *Example*
+-//    tinycolor.isReadable("#000", "#111") => false
+-//    tinycolor.isReadable("#000", "#111",{level:"AA",size:"large"}) => false
+-tinycolor.isReadable = function(color1, color2, wcag2) {
+-    var readability = tinycolor.readability(color1, color2);
+-    var wcag2Parms, out;
++process.cwd = function () { return '/' };
++process.chdir = function (dir) {
++    throw new Error('process.chdir is not supported');
++};
++process.umask = function() { return 0; };
+ 
+-    out = false;
++},{}],134:[function(require,module,exports){
++'use strict'
+ 
+-    wcag2Parms = validateWCAG2Parms(wcag2);
+-    switch (wcag2Parms.level + wcag2Parms.size) {
+-        case "AAsmall":
+-        case "AAAlarge":
+-            out = readability >= 4.5;
+-            break;
+-        case "AAlarge":
+-            out = readability >= 3;
+-            break;
+-        case "AAAsmall":
+-            out = readability >= 7;
+-            break;
+-    }
+-    return out;
++var bnadd = require('big-rat/add')
+ 
+-};
++module.exports = add
+ 
+-// `mostReadable`
+-// Given a base color and a list of possible foreground or background
+-// colors for that base, returns the most readable color.
+-// Optionally returns Black or White if the most readable color is unreadable.
+-// *Example*
+-//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:false}).toHexString(); // "#112255"
+-//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:true}).toHexString();  // "#ffffff"
+-//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"large"}).toHexString(); // "#faf3f3"
+-//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"small"}).toHexString(); // "#ffffff"
+-tinycolor.mostReadable = function(baseColor, colorList, args) {
+-    var bestColor = null;
+-    var bestScore = 0;
+-    var readability;
+-    var includeFallbackColors, level, size ;
+-    args = args || {};
+-    includeFallbackColors = args.includeFallbackColors ;
+-    level = args.level;
+-    size = args.size;
++function add(a, b) {
++  var n = a.length
++  var r = new Array(n)
++    for(var i=0; i<n; ++i) {
++    r[i] = bnadd(a[i], b[i])
++  }
++  return r
++}
+ 
+-    for (var i= 0; i < colorList.length ; i++) {
+-        readability = tinycolor.readability(baseColor, colorList[i]);
+-        if (readability > bestScore) {
+-            bestScore = readability;
+-            bestColor = tinycolor(colorList[i]);
+-        }
+-    }
++},{"big-rat/add":11}],135:[function(require,module,exports){
++'use strict'
+ 
+-    if (tinycolor.isReadable(baseColor, bestColor, {"level":level,"size":size}) || !includeFallbackColors) {
+-        return bestColor;
+-    }
+-    else {
+-        args.includeFallbackColors=false;
+-        return tinycolor.mostReadable(baseColor,["#fff", "#000"],args);
+-    }
+-};
++module.exports = float2rat
+ 
++var rat = require('big-rat')
+ 
+-// Big List of Colors
+-// ------------------
+-// <http://www.w3.org/TR/css3-color/#svg-color>
+-var names = tinycolor.names = {
+-    aliceblue: "f0f8ff",
+-    antiquewhite: "faebd7",
+-    aqua: "0ff",
+-    aquamarine: "7fffd4",
+-    azure: "f0ffff",
+-    beige: "f5f5dc",
+-    bisque: "ffe4c4",
+-    black: "000",
+-    blanchedalmond: "ffebcd",
+-    blue: "00f",
+-    blueviolet: "8a2be2",
+-    brown: "a52a2a",
+-    burlywood: "deb887",
+-    burntsienna: "ea7e5d",
+-    cadetblue: "5f9ea0",
+-    chartreuse: "7fff00",
+-    chocolate: "d2691e",
+-    coral: "ff7f50",
+-    cornflowerblue: "6495ed",
+-    cornsilk: "fff8dc",
+-    crimson: "dc143c",
+-    cyan: "0ff",
+-    darkblue: "00008b",
+-    darkcyan: "008b8b",
+-    darkgoldenrod: "b8860b",
+-    darkgray: "a9a9a9",
+-    darkgreen: "006400",
+-    darkgrey: "a9a9a9",
+-    darkkhaki: "bdb76b",
+-    darkmagenta: "8b008b",
+-    darkolivegreen: "556b2f",
+-    darkorange: "ff8c00",
+-    darkorchid: "9932cc",
+-    darkred: "8b0000",
+-    darksalmon: "e9967a",
+-    darkseagreen: "8fbc8f",
+-    darkslateblue: "483d8b",
+-    darkslategray: "2f4f4f",
+-    darkslategrey: "2f4f4f",
+-    darkturquoise: "00ced1",
+-    darkviolet: "9400d3",
+-    deeppink: "ff1493",
+-    deepskyblue: "00bfff",
+-    dimgray: "696969",
+-    dimgrey: "696969",
+-    dodgerblue: "1e90ff",
+-    firebrick: "b22222",
+-    floralwhite: "fffaf0",
+-    forestgreen: "228b22",
+-    fuchsia: "f0f",
+-    gainsboro: "dcdcdc",
+-    ghostwhite: "f8f8ff",
+-    gold: "ffd700",
+-    goldenrod: "daa520",
+-    gray: "808080",
+-    green: "008000",
+-    greenyellow: "adff2f",
+-    grey: "808080",
+-    honeydew: "f0fff0",
+-    hotpink: "ff69b4",
+-    indianred: "cd5c5c",
+-    indigo: "4b0082",
+-    ivory: "fffff0",
+-    khaki: "f0e68c",
+-    lavender: "e6e6fa",
+-    lavenderblush: "fff0f5",
+-    lawngreen: "7cfc00",
+-    lemonchiffon: "fffacd",
+-    lightblue: "add8e6",
+-    lightcoral: "f08080",
+-    lightcyan: "e0ffff",
+-    lightgoldenrodyellow: "fafad2",
+-    lightgray: "d3d3d3",
+-    lightgreen: "90ee90",
+-    lightgrey: "d3d3d3",
+-    lightpink: "ffb6c1",
+-    lightsalmon: "ffa07a",
+-    lightseagreen: "20b2aa",
+-    lightskyblue: "87cefa",
+-    lightslategray: "789",
+-    lightslategrey: "789",
+-    lightsteelblue: "b0c4de",
+-    lightyellow: "ffffe0",
+-    lime: "0f0",
+-    limegreen: "32cd32",
+-    linen: "faf0e6",
+-    magenta: "f0f",
+-    maroon: "800000",
+-    mediumaquamarine: "66cdaa",
+-    mediumblue: "0000cd",
+-    mediumorchid: "ba55d3",
+-    mediumpurple: "9370db",
+-    mediumseagreen: "3cb371",
+-    mediumslateblue: "7b68ee",
+-    mediumspringgreen: "00fa9a",
+-    mediumturquoise: "48d1cc",
+-    mediumvioletred: "c71585",
+-    midnightblue: "191970",
+-    mintcream: "f5fffa",
+-    mistyrose: "ffe4e1",
+-    moccasin: "ffe4b5",
+-    navajowhite: "ffdead",
+-    navy: "000080",
+-    oldlace: "fdf5e6",
+-    olive: "808000",
+-    olivedrab: "6b8e23",
+-    orange: "ffa500",
+-    orangered: "ff4500",
+-    orchid: "da70d6",
+-    palegoldenrod: "eee8aa",
+-    palegreen: "98fb98",
+-    paleturquoise: "afeeee",
+-    palevioletred: "db7093",
+-    papayawhip: "ffefd5",
+-    peachpuff: "ffdab9",
+-    peru: "cd853f",
+-    pink: "ffc0cb",
+-    plum: "dda0dd",
+-    powderblue: "b0e0e6",
+-    purple: "800080",
+-    rebeccapurple: "663399",
+-    red: "f00",
+-    rosybrown: "bc8f8f",
+-    royalblue: "4169e1",
+-    saddlebrown: "8b4513",
+-    salmon: "fa8072",
+-    sandybrown: "f4a460",
+-    seagreen: "2e8b57",
+-    seashell: "fff5ee",
+-    sienna: "a0522d",
+-    silver: "c0c0c0",
+-    skyblue: "87ceeb",
+-    slateblue: "6a5acd",
+-    slategray: "708090",
+-    slategrey: "708090",
+-    snow: "fffafa",
+-    springgreen: "00ff7f",
+-    steelblue: "4682b4",
+-    tan: "d2b48c",
+-    teal: "008080",
+-    thistle: "d8bfd8",
+-    tomato: "ff6347",
+-    turquoise: "40e0d0",
+-    violet: "ee82ee",
+-    wheat: "f5deb3",
+-    white: "fff",
+-    whitesmoke: "f5f5f5",
+-    yellow: "ff0",
+-    yellowgreen: "9acd32"
+-};
++function float2rat(v) {
++  var result = new Array(v.length)
++  for(var i=0; i<v.length; ++i) {
++    result[i] = rat(v[i])
++  }
++  return result
++}
+ 
+-// Make it easy to access colors via `hexNames[hex]`
+-var hexNames = tinycolor.hexNames = flip(names);
++},{"big-rat":14}],136:[function(require,module,exports){
++'use strict'
+ 
++var rat = require('big-rat')
++var mul = require('big-rat/mul')
+ 
+-// Utilities
+-// ---------
++module.exports = muls
+ 
+-// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
+-function flip(o) {
+-    var flipped = { };
+-    for (var i in o) {
+-        if (o.hasOwnProperty(i)) {
+-            flipped[o[i]] = i;
+-        }
+-    }
+-    return flipped;
++function muls(a, x) {
++  var s = rat(x)
++  var n = a.length
++  var r = new Array(n)
++  for(var i=0; i<n; ++i) {
++    r[i] = mul(a[i], s)
++  }
++  return r
+ }
+ 
+-// Return a valid alpha value [0,1] with all invalid values being set to 1
+-function boundAlpha(a) {
+-    a = parseFloat(a);
++},{"big-rat":14,"big-rat/mul":23}],137:[function(require,module,exports){
++'use strict'
+ 
+-    if (isNaN(a) || a < 0 || a > 1) {
+-        a = 1;
+-    }
++var bnsub = require('big-rat/sub')
+ 
+-    return a;
++module.exports = sub
++
++function sub(a, b) {
++  var n = a.length
++  var r = new Array(n)
++    for(var i=0; i<n; ++i) {
++    r[i] = bnsub(a[i], b[i])
++  }
++  return r
+ }
+ 
+-// Take input from [0, n] and return it as [0, 1]
+-function bound01(n, max) {
+-    if (isOnePointZero(n)) { n = "100%"; }
++},{"big-rat/sub":25}],138:[function(require,module,exports){
++/*!
++ * repeat-string <https://github.com/jonschlinkert/repeat-string>
++ *
++ * Copyright (c) 2014-2015, Jon Schlinkert.
++ * Licensed under the MIT License.
++ */
+ 
+-    var processPercent = isPercentage(n);
+-    n = mathMin(max, mathMax(0, parseFloat(n)));
++'use strict';
+ 
+-    // Automatically convert percentage into number
+-    if (processPercent) {
+-        n = parseInt(n * max, 10) / 100;
+-    }
++/**
++ * Results cache
++ */
+ 
+-    // Handle floating point rounding errors
+-    if ((math.abs(n - max) < 0.000001)) {
+-        return 1;
++var res = '';
++var cache;
++
++/**
++ * Expose `repeat`
++ */
++
++module.exports = repeat;
++
++/**
++ * Repeat the given `string` the specified `number`
++ * of times.
++ *
++ * **Example:**
++ *
++ * ```js
++ * var repeat = require('repeat-string');
++ * repeat('A', 5);
++ * //=> AAAAA
++ * ```
++ *
++ * @param {String} `string` The string to repeat
++ * @param {Number} `number` The number of times to repeat the string
++ * @return {String} Repeated string
++ * @api public
++ */
++
++function repeat(str, num) {
++  if (typeof str !== 'string') {
++    throw new TypeError('repeat-string expects a string.');
++  }
++
++  // cover common, quick use cases
++  if (num === 1) return str;
++  if (num === 2) return str + str;
++
++  var max = str.length * num;
++  if (cache !== str || typeof cache === 'undefined') {
++    cache = str;
++    res = '';
++  }
++
++  while (max > res.length && num > 0) {
++    if (num & 1) {
++      res += str;
+     }
+ 
+-    // Convert into [0, 1] range if it isn't already
+-    return (n % max) / parseFloat(max);
++    num >>= 1;
++    if (!num) break;
++    str += str;
++  }
++
++  return res.substr(0, max);
+ }
+ 
+-// Force a number between 0 and 1
+-function clamp01(val) {
+-    return mathMin(1, mathMax(0, val));
++
++},{}],139:[function(require,module,exports){
++"use strict"
++
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
++var robustDiff = require("robust-subtract")
++var robustScale = require("robust-scale")
++
++var NUM_EXPAND = 6
++
++function cofactor(m, c) {
++  var result = new Array(m.length-1)
++  for(var i=1; i<m.length; ++i) {
++    var r = result[i-1] = new Array(m.length-1)
++    for(var j=0,k=0; j<m.length; ++j) {
++      if(j === c) {
++        continue
++      }
++      r[k++] = m[i][j]
++    }
++  }
++  return result
+ }
+ 
+-// Parse a base-16 hex value into a base-10 integer
+-function parseIntFromHex(val) {
+-    return parseInt(val, 16);
++function matrix(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = new Array(n)
++    for(var j=0; j<n; ++j) {
++      result[i][j] = ["m", j, "[", (n-i-2), "]"].join("")
++    }
++  }
++  return result
+ }
+ 
+-// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
+-// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
+-function isOnePointZero(n) {
+-    return typeof n == "string" && n.indexOf('.') != -1 && parseFloat(n) === 1;
++function generateSum(expr) {
++  if(expr.length === 1) {
++    return expr[0]
++  } else if(expr.length === 2) {
++    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  } else {
++    var m = expr.length>>1
++    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++  }
+ }
+ 
+-// Check to see if string passed in is a percentage
+-function isPercentage(n) {
+-    return typeof n === "string" && n.indexOf('%') != -1;
++function makeProduct(a, b) {
++  if(a.charAt(0) === "m") {
++    if(b.charAt(0) === "w") {
++      var toks = a.split("[")
++      return ["w", b.substr(1), "m", toks[0].substr(1)].join("")
++    } else {
++      return ["prod(", a, ",", b, ")"].join("")
++    }
++  } else {
++    return makeProduct(b, a)
++  }
+ }
+ 
+-// Force a hex value to have 2 characters
+-function pad2(c) {
+-    return c.length == 1 ? '0' + c : '' + c;
++function sign(s) {
++  if(s & 1 !== 0) {
++    return "-"
++  }
++  return ""
+ }
+ 
+-// Replace a decimal with it's percentage value
+-function convertToPercentage(n) {
+-    if (n <= 1) {
+-        n = (n * 100) + "%";
++function determinant(m) {
++  if(m.length === 2) {
++    return [["diff(", makeProduct(m[0][0], m[1][1]), ",", makeProduct(m[1][0], m[0][1]), ")"].join("")]
++  } else {
++    var expr = []
++    for(var i=0; i<m.length; ++i) {
++      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
+     }
++    return expr
++  }
++}
+ 
+-    return n;
++function makeSquare(d, n) {
++  var terms = []
++  for(var i=0; i<n-2; ++i) {
++    terms.push(["prod(m", d, "[", i, "],m", d, "[", i, "])"].join(""))
++  }
++  return generateSum(terms)
+ }
+ 
+-// Converts a decimal to a hex value
+-function convertDecimalToHex(d) {
+-    return Math.round(parseFloat(d) * 255).toString(16);
++function orientation(n) {
++  var pos = []
++  var neg = []
++  var m = matrix(n)
++  for(var i=0; i<n; ++i) {
++    m[0][i] = "1"
++    m[n-1][i] = "w"+i
++  } 
++  for(var i=0; i<n; ++i) {
++    if((i&1)===0) {
++      pos.push.apply(pos,determinant(cofactor(m, i)))
++    } else {
++      neg.push.apply(neg,determinant(cofactor(m, i)))
++    }
++  }
++  var posExpr = generateSum(pos)
++  var negExpr = generateSum(neg)
++  var funcName = "exactInSphere" + n
++  var funcArgs = []
++  for(var i=0; i<n; ++i) {
++    funcArgs.push("m" + i)
++  }
++  var code = ["function ", funcName, "(", funcArgs.join(), "){"]
++  for(var i=0; i<n; ++i) {
++    code.push("var w",i,"=",makeSquare(i,n),";")
++    for(var j=0; j<n; ++j) {
++      if(j !== i) {
++        code.push("var w",i,"m",j,"=scale(w",i,",m",j,"[0]);")
++      }
++    }
++  }
++  code.push("var p=", posExpr, ",n=", negExpr, ",d=diff(p,n);return d[d.length-1];}return ", funcName)
++  var proc = new Function("sum", "diff", "prod", "scale", code.join(""))
++  return proc(robustSum, robustDiff, twoProduct, robustScale)
+ }
+-// Converts a hex value to a decimal
+-function convertHexToDecimal(h) {
+-    return (parseIntFromHex(h) / 255);
++
++function inSphere0() { return 0 }
++function inSphere1() { return 0 }
++function inSphere2() { return 0 }
++
++var CACHED = [
++  inSphere0,
++  inSphere1,
++  inSphere2
++]
++
++function slowInSphere(args) {
++  var proc = CACHED[args.length]
++  if(!proc) {
++    proc = CACHED[args.length] = orientation(args.length)
++  }
++  return proc.apply(undefined, args)
+ }
+ 
+-var matchers = (function() {
++function generateInSphereTest() {
++  while(CACHED.length <= NUM_EXPAND) {
++    CACHED.push(orientation(CACHED.length))
++  }
++  var args = []
++  var procArgs = ["slow"]
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    args.push("a" + i)
++    procArgs.push("o" + i)
++  }
++  var code = [
++    "function testInSphere(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
++  ]
++  for(var i=2; i<=NUM_EXPAND; ++i) {
++    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
++  }
++  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return testInSphere")
++  procArgs.push(code.join(""))
+ 
+-    // <http://www.w3.org/TR/css3-values/#integers>
+-    var CSS_INTEGER = "[-\\+]?\\d+%?";
++  var proc = Function.apply(undefined, procArgs)
+ 
+-    // <http://www.w3.org/TR/css3-values/#number-value>
+-    var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";
++  module.exports = proc.apply(undefined, [slowInSphere].concat(CACHED))
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    module.exports[i] = CACHED[i]
++  }
++}
+ 
+-    // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
+-    var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";
++generateInSphereTest()
++},{"robust-scale":142,"robust-subtract":144,"robust-sum":145,"two-product":160}],140:[function(require,module,exports){
++"use strict"
+ 
+-    // Actual matching.
+-    // Parentheses and commas are optional, but not required.
+-    // Whitespace can take the place of commas or opening paren
+-    var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+-    var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
++var robustScale = require("robust-scale")
++var robustSubtract = require("robust-subtract")
+ 
+-    return {
+-        rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
+-        rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
+-        hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
+-        hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
+-        hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
+-        hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
+-        hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+-        hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
+-        hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
+-    };
+-})();
++var NUM_EXPAND = 5
+ 
+-// `stringInputToObject`
+-// Permissive string parsing.  Take in a number of formats, and output an object
+-// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
+-function stringInputToObject(color) {
++var EPSILON     = 1.1102230246251565e-16
++var ERRBOUND3   = (3.0 + 16.0 * EPSILON) * EPSILON
++var ERRBOUND4   = (7.0 + 56.0 * EPSILON) * EPSILON
+ 
+-    color = color.replace(trimLeft,'').replace(trimRight, '').toLowerCase();
+-    var named = false;
+-    if (names[color]) {
+-        color = names[color];
+-        named = true;
+-    }
+-    else if (color == 'transparent') {
+-        return { r: 0, g: 0, b: 0, a: 0, format: "name" };
++function cofactor(m, c) {
++  var result = new Array(m.length-1)
++  for(var i=1; i<m.length; ++i) {
++    var r = result[i-1] = new Array(m.length-1)
++    for(var j=0,k=0; j<m.length; ++j) {
++      if(j === c) {
++        continue
++      }
++      r[k++] = m[i][j]
+     }
++  }
++  return result
++}
+ 
+-    // Try to match string input using regular expressions.
+-    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
+-    // Just return an object and let the conversion functions handle that.
+-    // This way the result will be the same whether the tinycolor is initialized with string or object.
+-    var match;
+-    if ((match = matchers.rgb.exec(color))) {
+-        return { r: match[1], g: match[2], b: match[3] };
+-    }
+-    if ((match = matchers.rgba.exec(color))) {
+-        return { r: match[1], g: match[2], b: match[3], a: match[4] };
+-    }
+-    if ((match = matchers.hsl.exec(color))) {
+-        return { h: match[1], s: match[2], l: match[3] };
+-    }
+-    if ((match = matchers.hsla.exec(color))) {
+-        return { h: match[1], s: match[2], l: match[3], a: match[4] };
++function matrix(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = new Array(n)
++    for(var j=0; j<n; ++j) {
++      result[i][j] = ["m", j, "[", (n-i-1), "]"].join("")
+     }
+-    if ((match = matchers.hsv.exec(color))) {
+-        return { h: match[1], s: match[2], v: match[3] };
++  }
++  return result
++}
++
++function sign(n) {
++  if(n & 1) {
++    return "-"
++  }
++  return ""
++}
++
++function generateSum(expr) {
++  if(expr.length === 1) {
++    return expr[0]
++  } else if(expr.length === 2) {
++    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  } else {
++    var m = expr.length>>1
++    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++  }
++}
++
++function determinant(m) {
++  if(m.length === 2) {
++    return [["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")]
++  } else {
++    var expr = []
++    for(var i=0; i<m.length; ++i) {
++      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
+     }
+-    if ((match = matchers.hsva.exec(color))) {
+-        return { h: match[1], s: match[2], v: match[3], a: match[4] };
++    return expr
++  }
++}
++
++function orientation(n) {
++  var pos = []
++  var neg = []
++  var m = matrix(n)
++  var args = []
++  for(var i=0; i<n; ++i) {
++    if((i&1)===0) {
++      pos.push.apply(pos, determinant(cofactor(m, i)))
++    } else {
++      neg.push.apply(neg, determinant(cofactor(m, i)))
+     }
+-    if ((match = matchers.hex8.exec(color))) {
+-        return {
+-            a: convertHexToDecimal(match[1]),
+-            r: parseIntFromHex(match[2]),
+-            g: parseIntFromHex(match[3]),
+-            b: parseIntFromHex(match[4]),
+-            format: named ? "name" : "hex8"
+-        };
++    args.push("m" + i)
++  }
++  var posExpr = generateSum(pos)
++  var negExpr = generateSum(neg)
++  var funcName = "orientation" + n + "Exact"
++  var code = ["function ", funcName, "(", args.join(), "){var p=", posExpr, ",n=", negExpr, ",d=sub(p,n);\
++return d[d.length-1];};return ", funcName].join("")
++  var proc = new Function("sum", "prod", "scale", "sub", code)
++  return proc(robustSum, twoProduct, robustScale, robustSubtract)
++}
++
++var orientation3Exact = orientation(3)
++var orientation4Exact = orientation(4)
++
++var CACHED = [
++  function orientation0() { return 0 },
++  function orientation1() { return 0 },
++  function orientation2(a, b) { 
++    return b[0] - a[0]
++  },
++  function orientation3(a, b, c) {
++    var l = (a[1] - c[1]) * (b[0] - c[0])
++    var r = (a[0] - c[0]) * (b[1] - c[1])
++    var det = l - r
++    var s
++    if(l > 0) {
++      if(r <= 0) {
++        return det
++      } else {
++        s = l + r
++      }
++    } else if(l < 0) {
++      if(r >= 0) {
++        return det
++      } else {
++        s = -(l + r)
++      }
++    } else {
++      return det
+     }
+-    if ((match = matchers.hex6.exec(color))) {
+-        return {
+-            r: parseIntFromHex(match[1]),
+-            g: parseIntFromHex(match[2]),
+-            b: parseIntFromHex(match[3]),
+-            format: named ? "name" : "hex"
+-        };
++    var tol = ERRBOUND3 * s
++    if(det >= tol || det <= -tol) {
++      return det
+     }
+-    if ((match = matchers.hex3.exec(color))) {
+-        return {
+-            r: parseIntFromHex(match[1] + '' + match[1]),
+-            g: parseIntFromHex(match[2] + '' + match[2]),
+-            b: parseIntFromHex(match[3] + '' + match[3]),
+-            format: named ? "name" : "hex"
+-        };
++    return orientation3Exact(a, b, c)
++  },
++  function orientation4(a,b,c,d) {
++    var adx = a[0] - d[0]
++    var bdx = b[0] - d[0]
++    var cdx = c[0] - d[0]
++    var ady = a[1] - d[1]
++    var bdy = b[1] - d[1]
++    var cdy = c[1] - d[1]
++    var adz = a[2] - d[2]
++    var bdz = b[2] - d[2]
++    var cdz = c[2] - d[2]
++    var bdxcdy = bdx * cdy
++    var cdxbdy = cdx * bdy
++    var cdxady = cdx * ady
++    var adxcdy = adx * cdy
++    var adxbdy = adx * bdy
++    var bdxady = bdx * ady
++    var det = adz * (bdxcdy - cdxbdy) 
++            + bdz * (cdxady - adxcdy)
++            + cdz * (adxbdy - bdxady)
++    var permanent = (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * Math.abs(adz)
++                  + (Math.abs(cdxady) + Math.abs(adxcdy)) * Math.abs(bdz)
++                  + (Math.abs(adxbdy) + Math.abs(bdxady)) * Math.abs(cdz)
++    var tol = ERRBOUND4 * permanent
++    if ((det > tol) || (-det > tol)) {
++      return det
+     }
++    return orientation4Exact(a,b,c,d)
++  }
++]
+ 
+-    return false;
++function slowOrient(args) {
++  var proc = CACHED[args.length]
++  if(!proc) {
++    proc = CACHED[args.length] = orientation(args.length)
++  }
++  return proc.apply(undefined, args)
+ }
+ 
+-function validateWCAG2Parms(parms) {
+-    // return valid WCAG2 parms for isReadable.
+-    // If input parms are invalid, return {"level":"AA", "size":"small"}
+-    var level, size;
+-    parms = parms || {"level":"AA", "size":"small"};
+-    level = (parms.level || "AA").toUpperCase();
+-    size = (parms.size || "small").toLowerCase();
+-    if (level !== "AA" && level !== "AAA") {
+-        level = "AA";
+-    }
+-    if (size !== "small" && size !== "large") {
+-        size = "small";
+-    }
+-    return {"level":level, "size":size};
+-}
++function generateOrientationProc() {
++  while(CACHED.length <= NUM_EXPAND) {
++    CACHED.push(orientation(CACHED.length))
++  }
++  var args = []
++  var procArgs = ["slow"]
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    args.push("a" + i)
++    procArgs.push("o" + i)
++  }
++  var code = [
++    "function getOrientation(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
++  ]
++  for(var i=2; i<=NUM_EXPAND; ++i) {
++    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
++  }
++  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return getOrientation")
++  procArgs.push(code.join(""))
+ 
+-// Node: Export function
+-if (typeof module !== "undefined" && module.exports) {
+-    module.exports = tinycolor;
+-}
+-// AMD/requirejs: Define the module
+-else if (typeof define === 'function' && define.amd) {
+-    define(function () {return tinycolor;});
+-}
+-// Browser: Expose to window
+-else {
+-    window.tinycolor = tinycolor;
++  var proc = Function.apply(undefined, procArgs)
++  module.exports = proc.apply(undefined, [slowOrient].concat(CACHED))
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    module.exports[i] = CACHED[i]
++  }
+ }
+ 
+-})();
+-
+-},{}],149:[function(require,module,exports){
++generateOrientationProc()
++},{"robust-scale":142,"robust-subtract":144,"robust-sum":145,"two-product":160}],141:[function(require,module,exports){
+ "use strict"
+ 
+-module.exports = twoProduct
+-
+-var SPLITTER = +(Math.pow(2, 27) + 1.0)
+-
+-function twoProduct(a, b, result) {
+-  var x = a * b
+-
+-  var c = SPLITTER * a
+-  var abig = c - a
+-  var ahi = c - abig
+-  var alo = a - ahi
+-
+-  var d = SPLITTER * b
+-  var bbig = d - b
+-  var bhi = d - bbig
+-  var blo = b - bhi
+-
+-  var err1 = x - (ahi * bhi)
+-  var err2 = err1 - (alo * bhi)
+-  var err3 = err2 - (ahi * blo)
++var robustSum = require("robust-sum")
++var robustScale = require("robust-scale")
+ 
+-  var y = alo * blo - err3
++module.exports = robustProduct
+ 
+-  if(result) {
+-    result[0] = y
+-    result[1] = x
+-    return result
++function robustProduct(a, b) {
++  if(a.length === 1) {
++    return robustScale(b, a[0])
+   }
+-
+-  return [ y, x ]
++  if(b.length === 1) {
++    return robustScale(a, b[0])
++  }
++  if(a.length === 0 || b.length === 0) {
++    return [0]
++  }
++  var r = [0]
++  if(a.length < b.length) {
++    for(var i=0; i<a.length; ++i) {
++      r = robustSum(r, robustScale(b, a[i]))
++    }
++  } else {
++    for(var i=0; i<b.length; ++i) {
++      r = robustSum(r, robustScale(a, b[i]))
++    }    
++  }
++  return r
+ }
+-},{}],150:[function(require,module,exports){
++},{"robust-scale":142,"robust-sum":145}],142:[function(require,module,exports){
+ "use strict"
+ 
+-module.exports = fastTwoSum
+-
+-function fastTwoSum(a, b, result) {
+-	var x = a + b
+-	var bv = x - a
+-	var av = x - bv
+-	var br = b - bv
+-	var ar = a - av
+-	if(result) {
+-		result[0] = ar + br
+-		result[1] = x
+-		return result
+-	}
+-	return [ar+br, x]
+-}
+-},{}],151:[function(require,module,exports){
+-(function (global,Buffer){
+-'use strict'
++var twoProduct = require("two-product")
++var twoSum = require("two-sum")
+ 
+-var bits = require('bit-twiddle')
+-var dup = require('dup')
++module.exports = scaleLinearExpansion
+ 
+-//Legacy pool support
+-if(!global.__TYPEDARRAY_POOL) {
+-  global.__TYPEDARRAY_POOL = {
+-      UINT8   : dup([32, 0])
+-    , UINT16  : dup([32, 0])
+-    , UINT32  : dup([32, 0])
+-    , INT8    : dup([32, 0])
+-    , INT16   : dup([32, 0])
+-    , INT32   : dup([32, 0])
+-    , FLOAT   : dup([32, 0])
+-    , DOUBLE  : dup([32, 0])
+-    , DATA    : dup([32, 0])
+-    , UINT8C  : dup([32, 0])
+-    , BUFFER  : dup([32, 0])
++function scaleLinearExpansion(e, scale) {
++  var n = e.length
++  if(n === 1) {
++    var ts = twoProduct(e[0], scale)
++    if(ts[0]) {
++      return ts
++    }
++    return [ ts[1] ]
+   }
+-}
+-
+-var hasUint8C = (typeof Uint8ClampedArray) !== 'undefined'
+-var POOL = global.__TYPEDARRAY_POOL
+-
+-//Upgrade pool
+-if(!POOL.UINT8C) {
+-  POOL.UINT8C = dup([32, 0])
+-}
+-if(!POOL.BUFFER) {
+-  POOL.BUFFER = dup([32, 0])
+-}
+-
+-//New technique: Only allocate from ArrayBufferView and Buffer
+-var DATA    = POOL.DATA
+-  , BUFFER  = POOL.BUFFER
+-
+-exports.free = function free(array) {
+-  if(Buffer.isBuffer(array)) {
+-    BUFFER[bits.log2(array.length)].push(array)
+-  } else {
+-    if(Object.prototype.toString.call(array) !== '[object ArrayBuffer]') {
+-      array = array.buffer
++  var g = new Array(2 * n)
++  var q = [0.1, 0.1]
++  var t = [0.1, 0.1]
++  var count = 0
++  twoProduct(e[0], scale, q)
++  if(q[0]) {
++    g[count++] = q[0]
++  }
++  for(var i=1; i<n; ++i) {
++    twoProduct(e[i], scale, t)
++    var pq = q[1]
++    twoSum(pq, t[0], q)
++    if(q[0]) {
++      g[count++] = q[0]
+     }
+-    if(!array) {
+-      return
++    var a = t[1]
++    var b = q[1]
++    var x = a + b
++    var bv = x - a
++    var y = b - bv
++    q[1] = x
++    if(y) {
++      g[count++] = y
+     }
+-    var n = array.length || array.byteLength
+-    var log_n = bits.log2(n)|0
+-    DATA[log_n].push(array)
+   }
+-}
+-
+-function freeArrayBuffer(buffer) {
+-  if(!buffer) {
+-    return
++  if(q[1]) {
++    g[count++] = q[1]
+   }
+-  var n = buffer.length || buffer.byteLength
+-  var log_n = bits.log2(n)
+-  DATA[log_n].push(buffer)
++  if(count === 0) {
++    g[count++] = 0.0
++  }
++  g.length = count
++  return g
+ }
++},{"two-product":160,"two-sum":161}],143:[function(require,module,exports){
++"use strict"
+ 
+-function freeTypedArray(array) {
+-  freeArrayBuffer(array.buffer)
+-}
++module.exports = segmentsIntersect
+ 
+-exports.freeUint8 =
+-exports.freeUint16 =
+-exports.freeUint32 =
+-exports.freeInt8 =
+-exports.freeInt16 =
+-exports.freeInt32 =
+-exports.freeFloat32 = 
+-exports.freeFloat =
+-exports.freeFloat64 = 
+-exports.freeDouble = 
+-exports.freeUint8Clamped = 
+-exports.freeDataView = freeTypedArray
++var orient = require("robust-orientation")[3]
+ 
+-exports.freeArrayBuffer = freeArrayBuffer
++function checkCollinear(a0, a1, b0, b1) {
+ 
+-exports.freeBuffer = function freeBuffer(array) {
+-  BUFFER[bits.log2(array.length)].push(array)
+-}
++  for(var d=0; d<2; ++d) {
++    var x0 = a0[d]
++    var y0 = a1[d]
++    var l0 = Math.min(x0, y0)
++    var h0 = Math.max(x0, y0)    
+ 
+-exports.malloc = function malloc(n, dtype) {
+-  if(dtype === undefined || dtype === 'arraybuffer') {
+-    return mallocArrayBuffer(n)
+-  } else {
+-    switch(dtype) {
+-      case 'uint8':
+-        return mallocUint8(n)
+-      case 'uint16':
+-        return mallocUint16(n)
+-      case 'uint32':
+-        return mallocUint32(n)
+-      case 'int8':
+-        return mallocInt8(n)
+-      case 'int16':
+-        return mallocInt16(n)
+-      case 'int32':
+-        return mallocInt32(n)
+-      case 'float':
+-      case 'float32':
+-        return mallocFloat(n)
+-      case 'double':
+-      case 'float64':
+-        return mallocDouble(n)
+-      case 'uint8_clamped':
+-        return mallocUint8Clamped(n)
+-      case 'buffer':
+-        return mallocBuffer(n)
+-      case 'data':
+-      case 'dataview':
+-        return mallocDataView(n)
++    var x1 = b0[d]
++    var y1 = b1[d]
++    var l1 = Math.min(x1, y1)
++    var h1 = Math.max(x1, y1)    
+ 
+-      default:
+-        return null
++    if(h1 < l0 || h0 < l1) {
++      return false
+     }
+   }
+-  return null
+-}
+-
+-function mallocArrayBuffer(n) {
+-  var n = bits.nextPow2(n)
+-  var log_n = bits.log2(n)
+-  var d = DATA[log_n]
+-  if(d.length > 0) {
+-    return d.pop()
+-  }
+-  return new ArrayBuffer(n)
+-}
+-exports.mallocArrayBuffer = mallocArrayBuffer
+-
+-function mallocUint8(n) {
+-  return new Uint8Array(mallocArrayBuffer(n), 0, n)
+-}
+-exports.mallocUint8 = mallocUint8
+ 
+-function mallocUint16(n) {
+-  return new Uint16Array(mallocArrayBuffer(2*n), 0, n)
+-}
+-exports.mallocUint16 = mallocUint16
+-
+-function mallocUint32(n) {
+-  return new Uint32Array(mallocArrayBuffer(4*n), 0, n)
++  return true
+ }
+-exports.mallocUint32 = mallocUint32
+ 
+-function mallocInt8(n) {
+-  return new Int8Array(mallocArrayBuffer(n), 0, n)
+-}
+-exports.mallocInt8 = mallocInt8
++function segmentsIntersect(a0, a1, b0, b1) {
++  var x0 = orient(a0, b0, b1)
++  var y0 = orient(a1, b0, b1)
++  if((x0 > 0 && y0 > 0) || (x0 < 0 && y0 < 0)) {
++    return false
++  }
+ 
+-function mallocInt16(n) {
+-  return new Int16Array(mallocArrayBuffer(2*n), 0, n)
+-}
+-exports.mallocInt16 = mallocInt16
++  var x1 = orient(b0, a0, a1)
++  var y1 = orient(b1, a0, a1)
++  if((x1 > 0 && y1 > 0) || (x1 < 0 && y1 < 0)) {
++    return false
++  }
+ 
+-function mallocInt32(n) {
+-  return new Int32Array(mallocArrayBuffer(4*n), 0, n)
+-}
+-exports.mallocInt32 = mallocInt32
++  //Check for degenerate collinear case
++  if(x0 === 0 && y0 === 0 && x1 === 0 && y1 === 0) {
++    return checkCollinear(a0, a1, b0, b1)
++  }
+ 
+-function mallocFloat(n) {
+-  return new Float32Array(mallocArrayBuffer(4*n), 0, n)
++  return true
+ }
+-exports.mallocFloat32 = exports.mallocFloat = mallocFloat
++},{"robust-orientation":140}],144:[function(require,module,exports){
++"use strict"
+ 
+-function mallocDouble(n) {
+-  return new Float64Array(mallocArrayBuffer(8*n), 0, n)
+-}
+-exports.mallocFloat64 = exports.mallocDouble = mallocDouble
++module.exports = robustSubtract
+ 
+-function mallocUint8Clamped(n) {
+-  if(hasUint8C) {
+-    return new Uint8ClampedArray(mallocArrayBuffer(n), 0, n)
+-  } else {
+-    return mallocUint8(n)
++//Easy case: Add two scalars
++function scalarScalar(a, b) {
++  var x = a + b
++  var bv = x - a
++  var av = x - bv
++  var br = b - bv
++  var ar = a - av
++  var y = ar + br
++  if(y) {
++    return [y, x]
+   }
++  return [x]
+ }
+-exports.mallocUint8Clamped = mallocUint8Clamped
+-
+-function mallocDataView(n) {
+-  return new DataView(mallocArrayBuffer(n), 0, n)
+-}
+-exports.mallocDataView = mallocDataView
+ 
+-function mallocBuffer(n) {
+-  n = bits.nextPow2(n)
+-  var log_n = bits.log2(n)
+-  var cache = BUFFER[log_n]
+-  if(cache.length > 0) {
+-    return cache.pop()
++function robustSubtract(e, f) {
++  var ne = e.length|0
++  var nf = f.length|0
++  if(ne === 1 && nf === 1) {
++    return scalarScalar(e[0], -f[0])
+   }
+-  return new Buffer(n)
+-}
+-exports.mallocBuffer = mallocBuffer
+-
+-exports.clearCache = function clearCache() {
+-  for(var i=0; i<32; ++i) {
+-    POOL.UINT8[i].length = 0
+-    POOL.UINT16[i].length = 0
+-    POOL.UINT32[i].length = 0
+-    POOL.INT8[i].length = 0
+-    POOL.INT16[i].length = 0
+-    POOL.INT32[i].length = 0
+-    POOL.FLOAT[i].length = 0
+-    POOL.DOUBLE[i].length = 0
+-    POOL.UINT8C[i].length = 0
+-    DATA[i].length = 0
+-    BUFFER[i].length = 0
++  var n = ne + nf
++  var g = new Array(n)
++  var count = 0
++  var eptr = 0
++  var fptr = 0
++  var abs = Math.abs
++  var ei = e[eptr]
++  var ea = abs(ei)
++  var fi = -f[fptr]
++  var fa = abs(fi)
++  var a, b
++  if(ea < fa) {
++    b = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    b = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
++      fa = abs(fi)
++    }
+   }
+-}
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
+-},{"bit-twiddle":9,"buffer":10,"dup":63}],152:[function(require,module,exports){
+-"use strict"
+-
+-function unique_pred(list, compare) {
+-  var ptr = 1
+-    , len = list.length
+-    , a=list[0], b=list[0]
+-  for(var i=1; i<len; ++i) {
+-    b = a
+-    a = list[i]
+-    if(compare(a, b)) {
+-      if(i === ptr) {
+-        ptr++
+-        continue
+-      }
+-      list[ptr++] = a
++  if((eptr < ne && ea < fa) || (fptr >= nf)) {
++    a = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    a = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
++      fa = abs(fi)
+     }
+   }
+-  list.length = ptr
+-  return list
+-}
+-
+-function unique_eq(list) {
+-  var ptr = 1
+-    , len = list.length
+-    , a=list[0], b = list[0]
+-  for(var i=1; i<len; ++i, b=a) {
+-    b = a
+-    a = list[i]
+-    if(a !== b) {
+-      if(i === ptr) {
+-        ptr++
+-        continue
++  var x = a + b
++  var bv = x - a
++  var y = b - bv
++  var q0 = y
++  var q1 = x
++  var _x, _bv, _av, _br, _ar
++  while(eptr < ne && fptr < nf) {
++    if(ea < fa) {
++      a = ei
++      eptr += 1
++      if(eptr < ne) {
++        ei = e[eptr]
++        ea = abs(ei)
+       }
+-      list[ptr++] = a
++    } else {
++      a = fi
++      fptr += 1
++      if(fptr < nf) {
++        fi = -f[fptr]
++        fa = abs(fi)
++      }
++    }
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++  }
++  while(eptr < ne) {
++    a = ei
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
+     }
+   }
+-  list.length = ptr
+-  return list
+-}
+-
+-function unique(list, compare, sorted) {
+-  if(list.length === 0) {
+-    return list
+-  }
+-  if(compare) {
+-    if(!sorted) {
+-      list.sort(compare)
++  while(fptr < nf) {
++    a = fi
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    } 
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
+     }
+-    return unique_pred(list, compare)
+   }
+-  if(!sorted) {
+-    list.sort()
++  if(q0) {
++    g[count++] = q0
+   }
+-  return unique_eq(list)
++  if(q1) {
++    g[count++] = q1
++  }
++  if(!count) {
++    g[count++] = 0.0  
++  }
++  g.length = count
++  return g
+ }
+-
+-module.exports = unique
+-
+-},{}],153:[function(require,module,exports){
++},{}],145:[function(require,module,exports){
+ "use strict"
+ 
+-module.exports = createText
+-
+-var vectorizeText = require("./lib/vtext")
+-var defaultCanvas = null
+-var defaultContext = null
+-
+-if(typeof document !== 'undefined') {
+-  defaultCanvas = document.createElement('canvas')
+-  defaultCanvas.width = 8192
+-  defaultCanvas.height = 1024
+-  defaultContext = defaultCanvas.getContext("2d")
+-}
++module.exports = linearExpansionSum
+ 
+-function createText(str, options) {
+-  if((typeof options !== "object") || (options === null)) {
+-    options = {}
++//Easy case: Add two scalars
++function scalarScalar(a, b) {
++  var x = a + b
++  var bv = x - a
++  var av = x - bv
++  var br = b - bv
++  var ar = a - av
++  var y = ar + br
++  if(y) {
++    return [y, x]
+   }
+-  return vectorizeText(
+-    str,
+-    options.canvas || defaultCanvas,
+-    options.context || defaultContext,
+-    options)
++  return [x]
+ }
+ 
+-},{"./lib/vtext":154}],154:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = vectorizeText
+-module.exports.processPixels = processPixels
+-
+-var surfaceNets = require('surface-nets')
+-var ndarray = require('ndarray')
+-var simplify = require('simplify-planar-graph')
+-var cleanPSLG = require('clean-pslg')
+-var cdt2d = require('cdt2d')
+-var toPolygonCrappy = require('planar-graph-to-polyline')
+-
+-function transformPositions(positions, options, size) {
+-  var align = options.textAlign || "start"
+-  var baseline = options.textBaseline || "alphabetic"
+-
+-  var lo = [1<<30, 1<<30]
+-  var hi = [0,0]
+-  var n = positions.length
+-  for(var i=0; i<n; ++i) {
+-    var p = positions[i]
+-    for(var j=0; j<2; ++j) {
+-      lo[j] = Math.min(lo[j], p[j])|0
+-      hi[j] = Math.max(hi[j], p[j])|0
++function linearExpansionSum(e, f) {
++  var ne = e.length|0
++  var nf = f.length|0
++  if(ne === 1 && nf === 1) {
++    return scalarScalar(e[0], f[0])
++  }
++  var n = ne + nf
++  var g = new Array(n)
++  var count = 0
++  var eptr = 0
++  var fptr = 0
++  var abs = Math.abs
++  var ei = e[eptr]
++  var ea = abs(ei)
++  var fi = f[fptr]
++  var fa = abs(fi)
++  var a, b
++  if(ea < fa) {
++    b = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    b = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++      fa = abs(fi)
+     }
+   }
+-
+-  var xShift = 0
+-  switch(align) {
+-    case "center":
+-      xShift = -0.5 * (lo[0] + hi[0])
+-    break
+-
+-    case "right":
+-    case "end":
+-      xShift = -hi[0]
+-    break
+-
+-    case "left":
+-    case "start":
+-      xShift = -lo[0]
+-    break
+-
+-    default:
+-      throw new Error("vectorize-text: Unrecognized textAlign: '" + align + "'")
++  if((eptr < ne && ea < fa) || (fptr >= nf)) {
++    a = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    a = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++      fa = abs(fi)
++    }
+   }
+-
+-  var yShift = 0
+-  switch(baseline) {
+-    case "hanging":
+-    case "top":
+-      yShift = -lo[1]
+-    break
+-
+-    case "middle":
+-      yShift = -0.5 * (lo[1] + hi[1])
+-    break
+-
+-    case "alphabetic":
+-    case "ideographic":
+-      yShift = -3 * size
+-    break
+-
+-    case "bottom":
+-      yShift = -hi[1]
+-    break
+-
+-    default:
+-      throw new Error("vectorize-text: Unrecoginized textBaseline: '" + baseline + "'")
++  var x = a + b
++  var bv = x - a
++  var y = b - bv
++  var q0 = y
++  var q1 = x
++  var _x, _bv, _av, _br, _ar
++  while(eptr < ne && fptr < nf) {
++    if(ea < fa) {
++      a = ei
++      eptr += 1
++      if(eptr < ne) {
++        ei = e[eptr]
++        ea = abs(ei)
++      }
++    } else {
++      a = fi
++      fptr += 1
++      if(fptr < nf) {
++        fi = f[fptr]
++        fa = abs(fi)
++      }
++    }
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
+   }
+-
+-  var scale = 1.0 / size
+-  if("lineHeight" in options) {
+-    scale *= +options.lineHeight
+-  } else if("width" in options) {
+-    scale = options.width / (hi[0] - lo[0])
+-  } else if("height" in options) {
+-    scale = options.height / (hi[1] - lo[1])
++  while(eptr < ne) {
++    a = ei
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++    }
+   }
+-
+-  return positions.map(function(p) {
+-    return [ scale * (p[0] + xShift), scale * (p[1] + yShift) ]
+-  })
+-}
+-
+-function getPixels(canvas, context, str, size) {
+-  var width = Math.ceil(context.measureText(str).width + 2*size)|0
+-  if(width > 8192) {
+-    throw new Error("vectorize-text: String too long (sorry, this will get fixed later)")
++  while(fptr < nf) {
++    a = fi
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    } 
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++    }
+   }
+-  var height = 3 * size
+-  if(canvas.height < height) {
+-    canvas.height = height
++  if(q0) {
++    g[count++] = q0
+   }
+-
+-  context.fillStyle = "#000"
+-  context.fillRect(0, 0, canvas.width, canvas.height)
+-
+-  context.fillStyle = "#fff"
+-  context.fillText(str, size, 2*size)
+-
+-  //Cut pixels from image
+-  var pixelData = context.getImageData(0, 0, width, height)
+-  var pixels = ndarray(pixelData.data, [height, width, 4])
+-
+-  return pixels.pick(-1,-1,0).transpose(1,0)
+-}
+-
+-function getContour(pixels, doSimplify) {
+-  var contour = surfaceNets(pixels, 128)
+-  if(doSimplify) {
+-    return simplify(contour.cells, contour.positions, 0.25)
++  if(q1) {
++    g[count++] = q1
+   }
+-  return {
+-    edges: contour.cells,
+-    positions: contour.positions
++  if(!count) {
++    g[count++] = 0.0  
+   }
++  g.length = count
++  return g
+ }
++},{}],146:[function(require,module,exports){
++"use strict"
+ 
+-function processPixelsImpl(pixels, options, size, simplify) {
+-  //Extract contour
+-  var contour = getContour(pixels, simplify)
++module.exports = function signum(x) {
++  if(x < 0) { return -1 }
++  if(x > 0) { return 1 }
++  return 0.0
++}
++},{}],147:[function(require,module,exports){
++arguments[4][28][0].apply(exports,arguments)
++},{"dup":28}],148:[function(require,module,exports){
++"use strict"; "use restrict";
+ 
+-  //Apply warp to positions
+-  var positions = transformPositions(contour.positions, options, size)
+-  var edges     = contour.edges
+-  var flip = "ccw" === options.orientation
++var bits      = require("bit-twiddle")
++  , UnionFind = require("union-find")
+ 
+-  //Clean up the PSLG, resolve self intersections, etc.
+-  cleanPSLG(positions, edges)
++//Returns the dimension of a cell complex
++function dimension(cells) {
++  var d = 0
++    , max = Math.max
++  for(var i=0, il=cells.length; i<il; ++i) {
++    d = max(d, cells[i].length)
++  }
++  return d-1
++}
++exports.dimension = dimension
+ 
+-  //If triangulate flag passed, triangulate the result
+-  if(options.polygons || options.polygon || options.polyline) {
+-    var result = toPolygonCrappy(edges, positions)
+-    var nresult = new Array(result.length)
+-    for(var i=0; i<result.length; ++i) {
+-      var loops = result[i]
+-      var nloops = new Array(loops.length)
+-      for(var j=0; j<loops.length; ++j) {
+-        var loop = loops[j]
+-        var nloop = new Array(loop.length)
+-        for(var k=0; k<loop.length; ++k) {
+-          nloop[k] = positions[loop[k]].slice()
+-        }
+-        if(flip) {
+-          nloop.reverse()
+-        }
+-        nloops[j] = nloop
+-      }
+-      nresult[i] = nloops
+-    }
+-    return nresult
+-  } else if(options.triangles || options.triangulate || options.triangle) {
+-    return {
+-      cells: cdt2d(positions, edges, {
+-        delaunay: false,
+-        exterior: false,
+-        interior: true
+-      }),
+-      positions: positions
+-    }
+-  } else {
+-    return {
+-      edges:     edges,
+-      positions: positions
++//Counts the number of vertices in faces
++function countVertices(cells) {
++  var vc = -1
++    , max = Math.max
++  for(var i=0, il=cells.length; i<il; ++i) {
++    var c = cells[i]
++    for(var j=0, jl=c.length; j<jl; ++j) {
++      vc = max(vc, c[j])
+     }
+   }
++  return vc+1
+ }
++exports.countVertices = countVertices
+ 
+-function processPixels(pixels, options, size) {
+-  try {
+-    return processPixelsImpl(pixels, options, size, true)
+-  } catch(e) {}
+-  try {
+-    return processPixelsImpl(pixels, options, size, false)
+-  } catch(e) {}
+-  if(options.polygons || options.polyline || options.polygon) {
+-    return []
++//Returns a deep copy of cells
++function cloneCells(cells) {
++  var ncells = new Array(cells.length)
++  for(var i=0, il=cells.length; i<il; ++i) {
++    ncells[i] = cells[i].slice(0)
+   }
+-  if(options.triangles || options.triangulate || options.triangle) {
+-    return {
+-      cells: [],
+-      positions: []
+-    }
++  return ncells
++}
++exports.cloneCells = cloneCells
++
++//Ranks a pair of cells up to permutation
++function compareCells(a, b) {
++  var n = a.length
++    , t = a.length - b.length
++    , min = Math.min
++  if(t) {
++    return t
+   }
+-  return {
+-    edges: [],
+-    positions: []
++  switch(n) {
++    case 0:
++      return 0;
++    case 1:
++      return a[0] - b[0];
++    case 2:
++      var d = a[0]+a[1]-b[0]-b[1]
++      if(d) {
++        return d
++      }
++      return min(a[0],a[1]) - min(b[0],b[1])
++    case 3:
++      var l1 = a[0]+a[1]
++        , m1 = b[0]+b[1]
++      d = l1+a[2] - (m1+b[2])
++      if(d) {
++        return d
++      }
++      var l0 = min(a[0], a[1])
++        , m0 = min(b[0], b[1])
++        , d  = min(l0, a[2]) - min(m0, b[2])
++      if(d) {
++        return d
++      }
++      return min(l0+a[2], l1) - min(m0+b[2], m1)
++    
++    //TODO: Maybe optimize n=4 as well?
++    
++    default:
++      var as = a.slice(0)
++      as.sort()
++      var bs = b.slice(0)
++      bs.sort()
++      for(var i=0; i<n; ++i) {
++        t = as[i] - bs[i]
++        if(t) {
++          return t
++        }
++      }
++      return 0
+   }
+ }
++exports.compareCells = compareCells
+ 
+-function vectorizeText(str, canvas, context, options) {
+-  var size = options.size || 64
+-  var family = options.font || "normal"
+-
+-  context.font = size + "px " + family
+-  context.textAlign = "start"
+-  context.textBaseline = "alphabetic"
+-  context.direction = "ltr"
+-
+-  var pixels = getPixels(canvas, context, str, size)
+-
+-  return processPixels(pixels, options, size)
++function compareZipped(a, b) {
++  return compareCells(a[0], b[0])
+ }
+ 
+-},{"cdt2d":16,"clean-pslg":23,"ndarray":131,"planar-graph-to-polyline":167,"simplify-planar-graph":171,"surface-nets":146}],155:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = trimLeaves
+-
+-var e2a = require('edges-to-adjacency-list')
+-
+-function trimLeaves(edges, positions) {
+-  var adj = e2a(edges, positions.length)
+-  var live = new Array(positions.length)
+-  var nbhd = new Array(positions.length)
+-
+-  var dead = []
+-  for(var i=0; i<positions.length; ++i) {
+-    var count = adj[i].length
+-    nbhd[i] = count
+-    live[i] = true
+-    if(count <= 1) {
+-      dead.push(i)
++//Puts a cell complex into normal order for the purposes of findCell queries
++function normalize(cells, attr) {
++  if(attr) {
++    var len = cells.length
++    var zipped = new Array(len)
++    for(var i=0; i<len; ++i) {
++      zipped[i] = [cells[i], attr[i]]
++    }
++    zipped.sort(compareZipped)
++    for(var i=0; i<len; ++i) {
++      cells[i] = zipped[i][0]
++      attr[i] = zipped[i][1]
+     }
++    return cells
++  } else {
++    cells.sort(compareCells)
++    return cells
+   }
++}
++exports.normalize = normalize
+ 
+-  while(dead.length > 0) {
+-    var v = dead.pop()
+-    live[v] = false
+-    var n = adj[v]
+-    for(var i=0; i<n.length; ++i) {
+-      var u = n[i]
+-      if(--nbhd[u] === 0) {
+-        dead.push(u)
++//Removes all duplicate cells in the complex
++function unique(cells) {
++  if(cells.length === 0) {
++    return []
++  }
++  var ptr = 1
++    , len = cells.length
++  for(var i=1; i<len; ++i) {
++    var a = cells[i]
++    if(compareCells(a, cells[i-1])) {
++      if(i === ptr) {
++        ptr++
++        continue
+       }
++      cells[ptr++] = a
+     }
+   }
++  cells.length = ptr
++  return cells
++}
++exports.unique = unique;
+ 
+-  var newIndex = new Array(positions.length)
+-  var npositions = []
+-  for(var i=0; i<positions.length; ++i) {
+-    if(live[i]) {
+-      var v = npositions.length
+-      newIndex[i] = v
+-      npositions.push(positions[i])
+-    } else {
+-      newIndex[i] = -1
++//Finds a cell in a normalized cell complex
++function findCell(cells, c) {
++  var lo = 0
++    , hi = cells.length-1
++    , r  = -1
++  while (lo <= hi) {
++    var mid = (lo + hi) >> 1
++      , s   = compareCells(cells[mid], c)
++    if(s <= 0) {
++      if(s === 0) {
++        r = mid
++      }
++      lo = mid + 1
++    } else if(s > 0) {
++      hi = mid - 1
+     }
+   }
++  return r
++}
++exports.findCell = findCell;
+ 
+-  var nedges = []
+-  for(var i=0; i<edges.length; ++i) {
+-    var e = edges[i]
+-    if(live[e[0]] && live[e[1]]) {
+-      nedges.push([ newIndex[e[0]], newIndex[e[1]] ])
++//Builds an index for an n-cell.  This is more general than dual, but less efficient
++function incidence(from_cells, to_cells) {
++  var index = new Array(from_cells.length)
++  for(var i=0, il=index.length; i<il; ++i) {
++    index[i] = []
++  }
++  var b = []
++  for(var i=0, n=to_cells.length; i<n; ++i) {
++    var c = to_cells[i]
++    var cl = c.length
++    for(var k=1, kn=(1<<cl); k<kn; ++k) {
++      b.length = bits.popCount(k)
++      var l = 0
++      for(var j=0; j<cl; ++j) {
++        if(k & (1<<j)) {
++          b[l++] = c[j]
++        }
++      }
++      var idx=findCell(from_cells, b)
++      if(idx < 0) {
++        continue
++      }
++      while(true) {
++        index[idx++].push(i)
++        if(idx >= from_cells.length || compareCells(from_cells[idx], b) !== 0) {
++          break
++        }
++      }
+     }
+   }
+-  
+-  return [ nedges, npositions ]
++  return index
+ }
+-},{"edges-to-adjacency-list":156}],156:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = edgeToAdjacency
+-
+-var uniq = require("uniq")
++exports.incidence = incidence
+ 
+-function edgeToAdjacency(edges, numVertices) {
+-  var numEdges = edges.length
+-  if(typeof numVertices !== "number") {
+-    numVertices = 0
+-    for(var i=0; i<numEdges; ++i) {
+-      var e = edges[i]
+-      numVertices = Math.max(numVertices, e[0], e[1])
+-    }
+-    numVertices = (numVertices|0) + 1
+-  }
+-  numVertices = numVertices|0
+-  var adj = new Array(numVertices)
+-  for(var i=0; i<numVertices; ++i) {
+-    adj[i] = []
++//Computes the dual of the mesh.  This is basically an optimized version of buildIndex for the situation where from_cells is just the list of vertices
++function dual(cells, vertex_count) {
++  if(!vertex_count) {
++    return incidence(unique(skeleton(cells, 0)), cells, 0)
+   }
+-  for(var i=0; i<numEdges; ++i) {
+-    var e = edges[i]
+-    adj[e[0]].push(e[1])
+-    adj[e[1]].push(e[0])
++  var res = new Array(vertex_count)
++  for(var i=0; i<vertex_count; ++i) {
++    res[i] = []
+   }
+-  for(var j=0; j<numVertices; ++j) {
+-    uniq(adj[j], function(a, b) {
+-      return a - b
+-    })
++  for(var i=0, len=cells.length; i<len; ++i) {
++    var c = cells[i]
++    for(var j=0, cl=c.length; j<cl; ++j) {
++      res[c[j]].push(i)
++    }
+   }
+-  return adj
++  return res
+ }
+-},{"uniq":152}],157:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = planarDual
+-
+-var compareAngle = require("compare-angle")
+-
+-function planarDual(cells, positions) {
++exports.dual = dual
+ 
+-  var numVertices = positions.length|0
+-  var numEdges = cells.length
+-  var adj = [new Array(numVertices), new Array(numVertices)]
+-  for(var i=0; i<numVertices; ++i) {
+-    adj[0][i] = []
+-    adj[1][i] = []
+-  }
+-  for(var i=0; i<numEdges; ++i) {
++//Enumerates all cells in the complex
++function explode(cells) {
++  var result = []
++  for(var i=0, il=cells.length; i<il; ++i) {
+     var c = cells[i]
+-    adj[0][c[0]].push(c)
+-    adj[1][c[1]].push(c)
+-  }
+-
+-  var cycles = []
+-
+-  //Add isolated vertices as trivial case
+-  for(var i=0; i<numVertices; ++i) {
+-    if(adj[0][i].length + adj[1][i].length === 0) {
+-      cycles.push( [i] )
++      , cl = c.length|0
++    for(var j=1, jl=(1<<cl); j<jl; ++j) {
++      var b = []
++      for(var k=0; k<cl; ++k) {
++        if((j >>> k) & 1) {
++          b.push(c[k])
++        }
++      }
++      result.push(b)
+     }
+   }
++  return normalize(result)
++}
++exports.explode = explode
+ 
+-  //Remove a half edge
+-  function cut(c, i) {
+-    var a = adj[i][c[i]]
+-    a.splice(a.indexOf(c), 1)
++//Enumerates all of the n-cells of a cell complex
++function skeleton(cells, n) {
++  if(n < 0) {
++    return []
+   }
+-
+-  //Find next vertex and cut edge
+-  function next(a, b, noCut) {
+-    var nextCell, nextVertex, nextDir
+-    for(var i=0; i<2; ++i) {
+-      if(adj[i][b].length > 0) {
+-        nextCell = adj[i][b][0]
+-        nextDir = i
+-        break
++  var result = []
++    , k0     = (1<<(n+1))-1
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var k=k0; k<(1<<c.length); k=bits.nextCombination(k)) {
++      var b = new Array(n+1)
++        , l = 0
++      for(var j=0; j<c.length; ++j) {
++        if(k & (1<<j)) {
++          b[l++] = c[j]
++        }
+       }
++      result.push(b)
+     }
+-    nextVertex = nextCell[nextDir^1]
++  }
++  return normalize(result)
++}
++exports.skeleton = skeleton;
+ 
+-    for(var dir=0; dir<2; ++dir) {
+-      var nbhd = adj[dir][b]
+-      for(var k=0; k<nbhd.length; ++k) {
+-        var e = nbhd[k]
+-        var p = e[dir^1]
+-        var cmp = compareAngle(
+-            positions[a], 
+-            positions[b], 
+-            positions[nextVertex],
+-            positions[p])
+-        if(cmp > 0) {
+-          nextCell = e
+-          nextVertex = p
+-          nextDir = dir
++//Computes the boundary of all cells, does not remove duplicates
++function boundary(cells) {
++  var res = []
++  for(var i=0,il=cells.length; i<il; ++i) {
++    var c = cells[i]
++    for(var j=0,cl=c.length; j<cl; ++j) {
++      var b = new Array(c.length-1)
++      for(var k=0, l=0; k<cl; ++k) {
++        if(k !== j) {
++          b[l++] = c[k]
+         }
+       }
++      res.push(b)
+     }
+-    if(noCut) {
+-      return nextVertex
+-    }
+-    if(nextCell) {
+-      cut(nextCell, nextDir)
+-    }
+-    return nextVertex
+   }
++  return normalize(res)
++}
++exports.boundary = boundary;
+ 
+-  function extractCycle(v, dir) {
+-    var e0 = adj[dir][v][0]
+-    var cycle = [v]
+-    cut(e0, dir)
+-    var u = e0[dir^1]
+-    var d0 = dir
+-    while(true) {
+-      while(u !== v) {
+-        cycle.push(u)
+-        u = next(cycle[cycle.length-2], u, false)
+-      }
+-      if(adj[0][v].length + adj[1][v].length === 0) {
+-        break
+-      }
+-      var a = cycle[cycle.length-1]
+-      var b = v
+-      var c = cycle[1]
+-      var d = next(a, b, true)
+-      if(compareAngle(positions[a], positions[b], positions[c], positions[d]) < 0) {
+-        break
++//Computes connected components for a dense cell complex
++function connectedComponents_dense(cells, vertex_count) {
++  var labels = new UnionFind(vertex_count)
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      for(var k=j+1; k<c.length; ++k) {
++        labels.link(c[j], c[k])
+       }
+-      cycle.push(v)
+-      u = next(a, b)
+     }
+-    return cycle
+   }
+-
+-  function shouldGlue(pcycle, ncycle) {
+-    return (ncycle[1] === ncycle[ncycle.length-1])
++  var components = []
++    , component_labels = labels.ranks
++  for(var i=0; i<component_labels.length; ++i) {
++    component_labels[i] = -1
+   }
+-
+-  for(var i=0; i<numVertices; ++i) {
+-    for(var j=0; j<2; ++j) {
+-      var pcycle = []
+-      while(adj[j][i].length > 0) {
+-        var ni = adj[0][i].length
+-        var ncycle = extractCycle(i,j)
+-        if(shouldGlue(pcycle, ncycle)) {
+-          //Glue together trivial cycles
+-          pcycle.push.apply(pcycle, ncycle)
+-        } else {
+-          if(pcycle.length > 0) {
+-            cycles.push(pcycle)
+-          }
+-          pcycle = ncycle
+-        }
+-      }
+-      if(pcycle.length > 0) {
+-        cycles.push(pcycle)
+-      }
++  for(var i=0; i<cells.length; ++i) {
++    var l = labels.find(cells[i][0])
++    if(component_labels[l] < 0) {
++      component_labels[l] = components.length
++      components.push([cells[i].slice(0)])
++    } else {
++      components[component_labels[l]].push(cells[i].slice(0))
+     }
+   }
+-
+-  //Combine paths and loops together
+-  return cycles
+-}
+-},{"compare-angle":158}],158:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = compareAngle
+-
+-var orient = require("robust-orientation")
+-var sgn = require("signum")
+-var twoSum = require("two-sum")
+-var robustProduct = require("robust-product")
+-var robustSum = require("robust-sum")
+-
+-function testInterior(a, b, c) {
+-  var x0 = twoSum(a[0], -b[0])
+-  var y0 = twoSum(a[1], -b[1])
+-  var x1 = twoSum(c[0], -b[0])
+-  var y1 = twoSum(c[1], -b[1])
+-
+-  var d = robustSum(
+-    robustProduct(x0, x1),
+-    robustProduct(y0, y1))
+-
+-  return d[d.length-1] >= 0
++  return components
+ }
+ 
+-function compareAngle(a, b, c, d) {
+-  var bcd = orient(b, c, d)
+-  if(bcd === 0) {
+-    //Handle degenerate cases
+-    var sabc = sgn(orient(a, b, c))
+-    var sabd = sgn(orient(a, b, d))
+-    if(sabc === sabd) {
+-      if(sabc === 0) {
+-        var ic = testInterior(a, b, c)
+-        var id = testInterior(a, b, d)
+-        if(ic === id) {
+-          return 0
+-        } else if(ic) {
+-          return 1
+-        } else {
+-          return -1
+-        }
+-      }
+-      return 0
+-    } else if(sabd === 0) {
+-      if(sabc > 0) {
+-        return -1
+-      } else if(testInterior(a, b, d)) {
+-        return -1
+-      } else {
+-        return 1
+-      }
+-    } else if(sabc === 0) {
+-      if(sabd > 0) {
+-        return 1
+-      } else if(testInterior(a, b, c)) {
+-        return 1
+-      } else {
+-        return -1
++//Computes connected components for a sparse graph
++function connectedComponents_sparse(cells) {
++  var vertices  = unique(normalize(skeleton(cells, 0)))
++    , labels    = new UnionFind(vertices.length)
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      var vj = findCell(vertices, [c[j]])
++      for(var k=j+1; k<c.length; ++k) {
++        labels.link(vj, findCell(vertices, [c[k]]))
+       }
+     }
+-    return sgn(sabd - sabc)
+   }
+-  var abc = orient(a, b, c)
+-  if(abc > 0) {
+-    if(bcd > 0 && orient(a, b, d) > 0) {
+-      return 1
+-    }
+-    return -1
+-  } else if(abc < 0) {
+-    if(bcd > 0 || orient(a, b, d) > 0) {
+-      return 1
+-    }
+-    return -1
+-  } else {
+-    var abd = orient(a, b, d)
+-    if(abd > 0) {
+-      return 1
++  var components        = []
++    , component_labels  = labels.ranks
++  for(var i=0; i<component_labels.length; ++i) {
++    component_labels[i] = -1
++  }
++  for(var i=0; i<cells.length; ++i) {
++    var l = labels.find(findCell(vertices, [cells[i][0]]));
++    if(component_labels[l] < 0) {
++      component_labels[l] = components.length
++      components.push([cells[i].slice(0)])
+     } else {
+-      if(testInterior(a, b, c)) {
+-        return 1
+-      } else {
+-        return -1
+-      }
++      components[component_labels[l]].push(cells[i].slice(0))
+     }
+   }
++  return components
+ }
+-},{"robust-orientation":133,"robust-product":159,"robust-sum":136,"signum":160,"two-sum":150}],159:[function(require,module,exports){
+-"use strict"
+ 
+-var robustSum = require("robust-sum")
+-var robustScale = require("robust-scale")
++//Computes connected components for a cell complex
++function connectedComponents(cells, vertex_count) {
++  if(vertex_count) {
++    return connectedComponents_dense(cells, vertex_count)
++  }
++  return connectedComponents_sparse(cells)
++}
++exports.connectedComponents = connectedComponents
+ 
+-module.exports = robustProduct
++},{"bit-twiddle":147,"union-find":149}],149:[function(require,module,exports){
++"use strict"; "use restrict";
+ 
+-function robustProduct(a, b) {
+-  if(a.length === 1) {
+-    return robustScale(b, a[0])
+-  }
+-  if(b.length === 1) {
+-    return robustScale(a, b[0])
+-  }
+-  if(a.length === 0 || b.length === 0) {
+-    return [0]
+-  }
+-  var r = [0]
+-  if(a.length < b.length) {
+-    for(var i=0; i<a.length; ++i) {
+-      r = robustSum(r, robustScale(b, a[i]))
+-    }
+-  } else {
+-    for(var i=0; i<b.length; ++i) {
+-      r = robustSum(r, robustScale(a, b[i]))
+-    }    
++module.exports = UnionFind;
++
++function UnionFind(count) {
++  this.roots = new Array(count);
++  this.ranks = new Array(count);
++  
++  for(var i=0; i<count; ++i) {
++    this.roots[i] = i;
++    this.ranks[i] = 0;
+   }
+-  return r
+ }
+-},{"robust-scale":134,"robust-sum":136}],160:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = function signum(x) {
+-  if(x < 0) { return -1 }
+-  if(x > 0) { return 1 }
+-  return 0.0
++UnionFind.prototype.length = function() {
++  return this.roots.length;
+ }
+-},{}],161:[function(require,module,exports){
+-"use strict"
+ 
+-function compileSearch(funcName, predicate, reversed, extraArgs, useNdarray, earlyOut) {
+-  var code = [
+-    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
+-earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
+-";while(l<=h){\
+-var m=(l+h)>>>1,x=a", useNdarray ? ".get(m)" : "[m]"]
+-  if(earlyOut) {
+-    if(predicate.indexOf("c") < 0) {
+-      code.push(";if(x===y){return m}else if(x<=y){")
+-    } else {
+-      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
+-    }
+-  } else {
+-    code.push(";if(", predicate, "){i=m;")
++UnionFind.prototype.makeSet = function() {
++  var n = this.roots.length;
++  this.roots.push(n);
++  this.ranks.push(0);
++  return n;
++}
++
++UnionFind.prototype.find = function(x) {
++  var roots = this.roots;
++  while(roots[x] !== x) {
++    var y = roots[x];
++    roots[x] = roots[y];
++    x = y;
+   }
+-  if(reversed) {
+-    code.push("l=m+1}else{h=m-1}")
+-  } else {
+-    code.push("h=m-1}else{l=m+1}")
++  return x;
++}
++
++UnionFind.prototype.link = function(x, y) {
++  var xr = this.find(x)
++    , yr = this.find(y);
++  if(xr === yr) {
++    return;
+   }
+-  code.push("}")
+-  if(earlyOut) {
+-    code.push("return -1};")
++  var ranks = this.ranks
++    , roots = this.roots
++    , xd    = ranks[xr]
++    , yd    = ranks[yr];
++  if(xd < yd) {
++    roots[xr] = yr;
++  } else if(yd < xd) {
++    roots[yr] = xr;
+   } else {
+-    code.push("return i};")
++    roots[yr] = xr;
++    ++ranks[xr];
+   }
+-  return code.join("")
+-}
+-
+-function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
+-  var result = new Function([
+-  compileSearch("A", "x" + predicate + "y", reversed, ["y"], false, earlyOut),
+-  compileSearch("B", "x" + predicate + "y", reversed, ["y"], true, earlyOut),
+-  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], false, earlyOut),
+-  compileSearch("Q", "c(x,y)" + predicate + "0", reversed, ["y", "c"], true, earlyOut),
+-"function dispatchBsearch", suffix, "(a,y,c,l,h){\
+-if(a.shape){\
+-if(typeof(c)==='function'){\
+-return Q(a,(l===undefined)?0:l|0,(h===undefined)?a.shape[0]-1:h|0,y,c)\
+-}else{\
+-return B(a,(c===undefined)?0:c|0,(l===undefined)?a.shape[0]-1:l|0,y)\
+-}}else{\
+-if(typeof(c)==='function'){\
+-return P(a,(l===undefined)?0:l|0,(h===undefined)?a.length-1:h|0,y,c)\
+-}else{\
+-return A(a,(c===undefined)?0:c|0,(l===undefined)?a.length-1:l|0,y)\
+-}}}\
+-return dispatchBsearch", suffix].join(""))
+-  return result()
+ }
+ 
+-module.exports = {
+-  ge: compileBoundsSearch(">=", false, "GE"),
+-  gt: compileBoundsSearch(">", false, "GT"),
+-  lt: compileBoundsSearch("<", true, "LT"),
+-  le: compileBoundsSearch("<=", true, "LE"),
+-  eq: compileBoundsSearch("-", true, "EQ", true)
+-}
+ 
+-},{}],162:[function(require,module,exports){
++},{}],150:[function(require,module,exports){
+ "use strict"
+ 
+-var bounds = require("binary-search-bounds")
+-
+-var NOT_FOUND = 0
+-var SUCCESS = 1
+-var EMPTY = 2
++module.exports = simplifyPolygon
+ 
+-module.exports = createWrapper
++var orient = require("robust-orientation")
++var sc = require("simplicial-complex")
+ 
+-function IntervalTreeNode(mid, left, right, leftPoints, rightPoints) {
+-  this.mid = mid
+-  this.left = left
+-  this.right = right
+-  this.leftPoints = leftPoints
+-  this.rightPoints = rightPoints
+-  this.count = (left ? left.count : 0) + (right ? right.count : 0) + leftPoints.length
++function errorWeight(base, a, b) {
++  var area = Math.abs(orient(base, a, b))
++  var perim = Math.sqrt(Math.pow(a[0] - b[0], 2) + Math.pow(a[1]-b[1], 2))
++  return area / perim
+ }
+ 
+-var proto = IntervalTreeNode.prototype
++function simplifyPolygon(cells, positions, minArea) {
+ 
+-function copy(a, b) {
+-  a.mid = b.mid
+-  a.left = b.left
+-  a.right = b.right
+-  a.leftPoints = b.leftPoints
+-  a.rightPoints = b.rightPoints
+-  a.count = b.count
+-}
++  var n = positions.length
++  var nc = cells.length
++  var inv = new Array(n)
++  var outv = new Array(n)
++  var weights = new Array(n)
++  var dead = new Array(n)
++  
++  //Initialize tables
++  for(var i=0; i<n; ++i) {
++    inv[i] = outv[i] = -1
++    weights[i] = Infinity
++    dead[i] = false
++  }
+ 
+-function rebuild(node, intervals) {
+-  var ntree = createIntervalTree(intervals)
+-  node.mid = ntree.mid
+-  node.left = ntree.left
+-  node.right = ntree.right
+-  node.leftPoints = ntree.leftPoints
+-  node.rightPoints = ntree.rightPoints
+-  node.count = ntree.count
+-}
++  //Compute neighbors
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    if(c.length !== 2) {
++      throw new Error("Input must be a graph")
++    }
++    var s = c[1]
++    var t = c[0]
++    if(outv[t] !== -1) {
++      outv[t] = -2
++    } else {
++      outv[t] = s
++    }
++    if(inv[s] !== -1) {
++      inv[s] = -2
++    } else {
++      inv[s] = t
++    }
++  }
+ 
+-function rebuildWithInterval(node, interval) {
+-  var intervals = node.intervals([])
+-  intervals.push(interval)
+-  rebuild(node, intervals)    
+-}
++  //Updates the weight for vertex i
++  function computeWeight(i) {
++    if(dead[i]) {
++      return Infinity
++    }
++    //TODO: Check that the line segment doesn't cross once simplified
++    var s = inv[i]
++    var t = outv[i]
++    if((s<0) || (t<0)) {
++      return Infinity
++    } else {
++      return errorWeight(positions[i], positions[s], positions[t])
++    }
++  }
+ 
+-function rebuildWithoutInterval(node, interval) {
+-  var intervals = node.intervals([])
+-  var idx = intervals.indexOf(interval)
+-  if(idx < 0) {
+-    return NOT_FOUND
++  //Swaps two nodes on the heap (i,j) are the index of the nodes
++  function heapSwap(i,j) {
++    var a = heap[i]
++    var b = heap[j]
++    heap[i] = b
++    heap[j] = a
++    index[a] = j
++    index[b] = i
+   }
+-  intervals.splice(idx, 1)
+-  rebuild(node, intervals)
+-  return SUCCESS
+-}
+ 
+-proto.intervals = function(result) {
+-  result.push.apply(result, this.leftPoints)
+-  if(this.left) {
+-    this.left.intervals(result)
++  //Returns the weight of node i on the heap
++  function heapWeight(i) {
++    return weights[heap[i]]
+   }
+-  if(this.right) {
+-    this.right.intervals(result)
++
++  function heapParent(i) {
++    if(i & 1) {
++      return (i - 1) >> 1
++    }
++    return (i >> 1) - 1
+   }
+-  return result
+-}
+ 
+-proto.insert = function(interval) {
+-  var weight = this.count - this.leftPoints.length
+-  this.count += 1
+-  if(interval[1] < this.mid) {
+-    if(this.left) {
+-      if(4*(this.left.count+1) > 3*(weight+1)) {
+-        rebuildWithInterval(this, interval)
+-      } else {
+-        this.left.insert(interval)
++  //Bubble element i down the heap
++  function heapDown(i) {
++    var w = heapWeight(i)
++    while(true) {
++      var tw = w
++      var left  = 2*i + 1
++      var right = 2*(i + 1)
++      var next = i
++      if(left < heapCount) {
++        var lw = heapWeight(left)
++        if(lw < tw) {
++          next = left
++          tw = lw
++        }
+       }
+-    } else {
+-      this.left = createIntervalTree([interval])
++      if(right < heapCount) {
++        var rw = heapWeight(right)
++        if(rw < tw) {
++          next = right
++        }
++      }
++      if(next === i) {
++        return i
++      }
++      heapSwap(i, next)
++      i = next      
+     }
+-  } else if(interval[0] > this.mid) {
+-    if(this.right) {
+-      if(4*(this.right.count+1) > 3*(weight+1)) {
+-        rebuildWithInterval(this, interval)
+-      } else {
+-        this.right.insert(interval)
++  }
++
++  //Bubbles element i up the heap
++  function heapUp(i) {
++    var w = heapWeight(i)
++    while(i > 0) {
++      var parent = heapParent(i)
++      if(parent >= 0) {
++        var pw = heapWeight(parent)
++        if(w < pw) {
++          heapSwap(i, parent)
++          i = parent
++          continue
++        }
+       }
+-    } else {
+-      this.right = createIntervalTree([interval])
++      return i
+     }
+-  } else {
+-    var l = bounds.ge(this.leftPoints, interval, compareBegin)
+-    var r = bounds.ge(this.rightPoints, interval, compareEnd)
+-    this.leftPoints.splice(l, 0, interval)
+-    this.rightPoints.splice(r, 0, interval)
+   }
+-}
+ 
+-proto.remove = function(interval) {
+-  var weight = this.count - this.leftPoints
+-  if(interval[1] < this.mid) {
+-    if(!this.left) {
+-      return NOT_FOUND
++  //Pop minimum element
++  function heapPop() {
++    if(heapCount > 0) {
++      var head = heap[0]
++      heapSwap(0, heapCount-1)
++      heapCount -= 1
++      heapDown(0)
++      return head
+     }
+-    var rw = this.right ? this.right.count : 0
+-    if(4 * rw > 3 * (weight-1)) {
+-      return rebuildWithoutInterval(this, interval)
++    return -1
++  }
++
++  //Update heap item i
++  function heapUpdate(i, w) {
++    var a = heap[i]
++    if(weights[a] === w) {
++      return i
+     }
+-    var r = this.left.remove(interval)
+-    if(r === EMPTY) {
+-      this.left = null
+-      this.count -= 1
+-      return SUCCESS
+-    } else if(r === SUCCESS) {
+-      this.count -= 1
++    weights[a] = -Infinity
++    heapUp(i)
++    heapPop()
++    weights[a] = w
++    heapCount += 1
++    return heapUp(heapCount-1)
++  }
++
++  //Kills a vertex (assume vertex already removed from heap)
++  function kill(i) {
++    if(dead[i]) {
++      return
+     }
+-    return r
+-  } else if(interval[0] > this.mid) {
+-    if(!this.right) {
+-      return NOT_FOUND
++    //Kill vertex
++    dead[i] = true
++    //Fixup topology
++    var s = inv[i]
++    var t = outv[i]
++    if(inv[t] >= 0) {
++      inv[t] = s
+     }
+-    var lw = this.left ? this.left.count : 0
+-    if(4 * lw > 3 * (weight-1)) {
+-      return rebuildWithoutInterval(this, interval)
++    if(outv[s] >= 0) {
++      outv[s] = t
+     }
+-    var r = this.right.remove(interval)
+-    if(r === EMPTY) {
+-      this.right = null
+-      this.count -= 1
+-      return SUCCESS
+-    } else if(r === SUCCESS) {
+-      this.count -= 1
++
++    //Update weights on s and t
++    if(index[s] >= 0) {
++      heapUpdate(index[s], computeWeight(s))
+     }
+-    return r
+-  } else {
+-    if(this.count === 1) {
+-      if(this.leftPoints[0] === interval) {
+-        return EMPTY
+-      } else {
+-        return NOT_FOUND
+-      }
++    if(index[t] >= 0) {
++      heapUpdate(index[t], computeWeight(t))
+     }
+-    if(this.leftPoints.length === 1 && this.leftPoints[0] === interval) {
+-      if(this.left && this.right) {
+-        var p = this
+-        var n = this.left
+-        while(n.right) {
+-          p = n
+-          n = n.right
+-        }
+-        if(p === this) {
+-          n.right = this.right
+-        } else {
+-          var l = this.left
+-          var r = this.right
+-          p.count -= n.count
+-          p.right = n.left
+-          n.left = l
+-          n.right = r
+-        }
+-        copy(this, n)
+-        this.count = (this.left?this.left.count:0) + (this.right?this.right.count:0) + this.leftPoints.length
+-      } else if(this.left) {
+-        copy(this, this.left)
+-      } else {
+-        copy(this, this.right)
+-      }
+-      return SUCCESS
++  }
++
++  //Initialize weights and heap
++  var heap = []
++  var index = new Array(n)
++  for(var i=0; i<n; ++i) {
++    var w = weights[i] = computeWeight(i)
++    if(w < Infinity) {
++      index[i] = heap.length
++      heap.push(i)
++    } else {
++      index[i] = -1
+     }
+-    for(var l = bounds.ge(this.leftPoints, interval, compareBegin); l<this.leftPoints.length; ++l) {
+-      if(this.leftPoints[l][0] !== interval[0]) {
++  }
++  var heapCount = heap.length
++  for(var i=heapCount>>1; i>=0; --i) {
++    heapDown(i)
++  }
++  
++  //Kill vertices
++  while(true) {
++    var hmin = heapPop()
++    if((hmin < 0) || (weights[hmin] > minArea)) {
++      break
++    }
++    kill(hmin)
++  }
++
++  //Build collapsed vertex table
++  var npositions = []
++  for(var i=0; i<n; ++i) {
++    if(!dead[i]) {
++      index[i] = npositions.length
++      npositions.push(positions[i].slice())
++    }
++  }
++  var nv = npositions.length
++
++  function tortoiseHare(seq, start) {
++    if(seq[start] < 0) {
++      return start
++    }
++    var t = start
++    var h = start
++    do {
++      //Walk two steps with h
++      var nh = seq[h]
++      if(!dead[h] || nh < 0 || nh === h) {
+         break
+       }
+-      if(this.leftPoints[l] === interval) {
+-        this.count -= 1
+-        this.leftPoints.splice(l, 1)
+-        for(var r = bounds.ge(this.rightPoints, interval, compareEnd); r<this.rightPoints.length; ++r) {
+-          if(this.rightPoints[r][1] !== interval[1]) {
+-            break
+-          } else if(this.rightPoints[r] === interval) {
+-            this.rightPoints.splice(r, 1)
+-            return SUCCESS
+-          }
+-        }
++      h = nh
++      nh = seq[h]
++      if(!dead[h] || nh < 0 || nh === h) {
++        break
+       }
++      h = nh
++
++      //Walk one step with t
++      t = seq[t]
++    } while(t !== h)
++    //Compress cycles
++    for(var v=start; v!==h; v = seq[v]) {
++      seq[v] = h
+     }
+-    return NOT_FOUND
++    return h
+   }
+-}
+ 
+-function reportLeftRange(arr, hi, cb) {
+-  for(var i=0; i<arr.length && arr[i][0] <= hi; ++i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
+-  }
+-}
++  var ncells = []
++  cells.forEach(function(c) {
++    var tin = tortoiseHare(inv, c[0])
++    var tout = tortoiseHare(outv, c[1])
++    if(tin >= 0 && tout >= 0 && tin !== tout) {
++      var cin = index[tin]
++      var cout = index[tout]
++      if(cin !== cout) {
++        ncells.push([ cin, cout ])
++      }
++    }
++  })
+ 
+-function reportRightRange(arr, lo, cb) {
+-  for(var i=arr.length-1; i>=0 && arr[i][1] >= lo; --i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
+-  }
+-}
++  //Normalize result
++  sc.unique(sc.normalize(ncells))
+ 
+-function reportRange(arr, cb) {
+-  for(var i=0; i<arr.length; ++i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
++  //Return final list of cells
++  return {
++    positions: npositions,
++    edges: ncells
+   }
+ }
++},{"robust-orientation":140,"simplicial-complex":148}],151:[function(require,module,exports){
++"use strict"
+ 
+-proto.queryPoint = function(x, cb) {
+-  if(x < this.mid) {
+-    if(this.left) {
+-      var r = this.left.queryPoint(x, cb)
+-      if(r) { return r }
++module.exports = orderSegments
++
++var orient = require("robust-orientation")
++
++function horizontalOrder(a, b) {
++  var bl, br
++  if(b[0][0] < b[1][0]) {
++    bl = b[0]
++    br = b[1]
++  } else if(b[0][0] > b[1][0]) {
++    bl = b[1]
++    br = b[0]
++  } else {
++    var alo = Math.min(a[0][1], a[1][1])
++    var ahi = Math.max(a[0][1], a[1][1])
++    var blo = Math.min(b[0][1], b[1][1])
++    var bhi = Math.max(b[0][1], b[1][1])
++    if(ahi < blo) {
++      return ahi - blo
+     }
+-    return reportLeftRange(this.leftPoints, x, cb)
+-  } else if(x > this.mid) {
+-    if(this.right) {
+-      var r = this.right.queryPoint(x, cb)
+-      if(r) { return r }
++    if(alo > bhi) {
++      return alo - bhi
+     }
+-    return reportRightRange(this.rightPoints, x, cb)
++    return ahi - bhi
++  }
++  var al, ar
++  if(a[0][1] < a[1][1]) {
++    al = a[0]
++    ar = a[1]
++  } else {
++    al = a[1]
++    ar = a[0]
++  }
++  var d = orient(br, bl, al)
++  if(d) {
++    return d
++  }
++  d = orient(br, bl, ar)
++  if(d) {
++    return d
++  }
++  return ar - br
++}
++
++function orderSegments(b, a) {
++  var al, ar
++  if(a[0][0] < a[1][0]) {
++    al = a[0]
++    ar = a[1]
++  } else if(a[0][0] > a[1][0]) {
++    al = a[1]
++    ar = a[0]
+   } else {
+-    return reportRange(this.leftPoints, cb)
++    return horizontalOrder(a, b)
+   }
+-}
+-
+-proto.queryInterval = function(lo, hi, cb) {
+-  if(lo < this.mid && this.left) {
+-    var r = this.left.queryInterval(lo, hi, cb)
+-    if(r) { return r }
++  var bl, br
++  if(b[0][0] < b[1][0]) {
++    bl = b[0]
++    br = b[1]
++  } else if(b[0][0] > b[1][0]) {
++    bl = b[1]
++    br = b[0]
++  } else {
++    return -horizontalOrder(b, a)
+   }
+-  if(hi > this.mid && this.right) {
+-    var r = this.right.queryInterval(lo, hi, cb)
+-    if(r) { return r }
++  var d1 = orient(al, ar, br)
++  var d2 = orient(al, ar, bl)
++  if(d1 < 0) {
++    if(d2 <= 0) {
++      return d1
++    }
++  } else if(d1 > 0) {
++    if(d2 >= 0) {
++      return d1
++    }
++  } else if(d2) {
++    return d2
+   }
+-  if(hi < this.mid) {
+-    return reportLeftRange(this.leftPoints, hi, cb)
+-  } else if(lo > this.mid) {
+-    return reportRightRange(this.rightPoints, lo, cb)
+-  } else {
+-    return reportRange(this.leftPoints, cb)
++  d1 = orient(br, bl, ar)
++  d2 = orient(br, bl, al)
++  if(d1 < 0) {
++    if(d2 <= 0) {
++      return d1
++    }
++  } else if(d1 > 0) {
++    if(d2 >= 0) {
++      return d1
++    }
++  } else if(d2) {
++    return d2
+   }
++  return ar[0] - br[0]
+ }
++},{"robust-orientation":140}],152:[function(require,module,exports){
++"use strict"
+ 
+-function compareNumbers(a, b) {
+-  return a - b
+-}
++module.exports = createSlabDecomposition
+ 
+-function compareBegin(a, b) {
+-  var d = a[0] - b[0]
+-  if(d) { return d }
+-  return a[1] - b[1]
+-}
++var bounds = require("binary-search-bounds")
++var createRBTree = require("functional-red-black-tree")
++var orient = require("robust-orientation")
++var orderSegments = require("./lib/order-segments")
+ 
+-function compareEnd(a, b) {
+-  var d = a[1] - b[1]
+-  if(d) { return d }
+-  return a[0] - b[0]
++function SlabDecomposition(slabs, coordinates, horizontal) {
++  this.slabs = slabs
++  this.coordinates = coordinates
++  this.horizontal = horizontal
+ }
+ 
+-function createIntervalTree(intervals) {
+-  if(intervals.length === 0) {
+-    return null
+-  }
+-  var pts = []
+-  for(var i=0; i<intervals.length; ++i) {
+-    pts.push(intervals[i][0], intervals[i][1])
+-  }
+-  pts.sort(compareNumbers)
++var proto = SlabDecomposition.prototype
+ 
+-  var mid = pts[pts.length>>1]
++function compareHorizontal(e, y) {
++  return e.y - y
++}
+ 
+-  var leftIntervals = []
+-  var rightIntervals = []
+-  var centerIntervals = []
+-  for(var i=0; i<intervals.length; ++i) {
+-    var s = intervals[i]
+-    if(s[1] < mid) {
+-      leftIntervals.push(s)
+-    } else if(mid < s[0]) {
+-      rightIntervals.push(s)
++function searchBucket(root, p) {
++  var lastNode = null
++  while(root) {
++    var seg = root.key
++    var l, r
++    if(seg[0][0] < seg[1][0]) {
++      l = seg[0]
++      r = seg[1]
+     } else {
+-      centerIntervals.push(s)
++      l = seg[1]
++      r = seg[0]
++    }
++    var o = orient(l, r, p)
++    if(o < 0) {
++      root = root.left
++    } else if(o > 0) {
++      if(p[0] !== seg[1][0]) {
++        lastNode = root
++        root = root.right
++      } else {
++        var val = searchBucket(root.right, p)
++        if(val) {
++          return val
++        }
++        root = root.left
++      }
++    } else {
++      if(p[0] !== seg[1][0]) {
++        return root
++      } else {
++        var val = searchBucket(root.right, p)
++        if(val) {
++          return val
++        }
++        root = root.left
++      }
+     }
+   }
+-
+-  //Split center intervals
+-  var leftPoints = centerIntervals
+-  var rightPoints = centerIntervals.slice()
+-  leftPoints.sort(compareBegin)
+-  rightPoints.sort(compareEnd)
+-
+-  return new IntervalTreeNode(mid, 
+-    createIntervalTree(leftIntervals),
+-    createIntervalTree(rightIntervals),
+-    leftPoints,
+-    rightPoints)
+-}
+-
+-//User friendly wrapper that makes it possible to support empty trees
+-function IntervalTree(root) {
+-  this.root = root
++  return lastNode
+ }
+ 
+-var tproto = IntervalTree.prototype
+-
+-tproto.insert = function(interval) {
+-  if(this.root) {
+-    this.root.insert(interval)
+-  } else {
+-    this.root = new IntervalTreeNode(interval[0], null, null, [interval], [interval])
++proto.castUp = function(p) {
++  var bucket = bounds.le(this.coordinates, p[0])
++  if(bucket < 0) {
++    return -1
+   }
+-}
+-
+-tproto.remove = function(interval) {
+-  if(this.root) {
+-    var r = this.root.remove(interval)
+-    if(r === EMPTY) {
+-      this.root = null
++  var root = this.slabs[bucket]
++  var hitNode = searchBucket(this.slabs[bucket], p)
++  var lastHit = -1
++  if(hitNode) {
++    lastHit = hitNode.value
++  }
++  //Edge case: need to handle horizontal segments (sucks)
++  if(this.coordinates[bucket] === p[0]) {
++    var lastSegment = null
++    if(hitNode) {
++      lastSegment = hitNode.key
++    }
++    if(bucket > 0) {
++      var otherHitNode = searchBucket(this.slabs[bucket-1], p)
++      if(otherHitNode) {
++        if(lastSegment) {
++          if(orderSegments(otherHitNode.key, lastSegment) > 0) {
++            lastSegment = otherHitNode.key
++            lastHit = otherHitNode.value
++          }
++        } else {
++          lastHit = otherHitNode.value
++          lastSegment = otherHitNode.key
++        }
++      }
++    }
++    var horiz = this.horizontal[bucket]
++    if(horiz.length > 0) {
++      var hbucket = bounds.ge(horiz, p[1], compareHorizontal)
++      if(hbucket < horiz.length) {
++        var e = horiz[hbucket]
++        if(p[1] === e.y) {
++          if(e.closed) {
++            return e.index
++          } else {
++            while(hbucket < horiz.length-1 && horiz[hbucket+1].y === p[1]) {
++              hbucket = hbucket+1
++              e = horiz[hbucket]
++              if(e.closed) {
++                return e.index
++              }
++            }
++            if(e.y === p[1] && !e.start) {
++              hbucket = hbucket+1
++              if(hbucket >= horiz.length) {
++                return lastHit
++              }
++              e = horiz[hbucket]
++            }
++          }
++        }
++        //Check if e is above/below last segment
++        if(e.start) {
++          if(lastSegment) {
++            var o = orient(lastSegment[0], lastSegment[1], [p[0], e.y])
++            if(lastSegment[0][0] > lastSegment[1][0]) {
++              o = -o
++            }
++            if(o > 0) {
++              lastHit = e.index
++            }
++          } else {
++            lastHit = e.index
++          }
++        } else if(e.y !== p[1]) {
++          lastHit = e.index
++        }
++      }
+     }
+-    return r !== NOT_FOUND
+   }
+-  return false
++  return lastHit
+ }
+ 
+-tproto.queryPoint = function(p, cb) {
+-  if(this.root) {
+-    return this.root.queryPoint(p, cb)
+-  }
++function IntervalSegment(y, index, start, closed) {
++  this.y = y
++  this.index = index
++  this.start = start
++  this.closed = closed
+ }
+ 
+-tproto.queryInterval = function(lo, hi, cb) {
+-  if(lo <= hi && this.root) {
+-    return this.root.queryInterval(lo, hi, cb)
+-  }
++function Event(x, segment, create, index) {
++  this.x = x
++  this.segment = segment
++  this.create = create
++  this.index = index
+ }
+ 
+-Object.defineProperty(tproto, "count", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root.count
++
++function createSlabDecomposition(segments) {
++  var numSegments = segments.length
++  var numEvents = 2 * numSegments
++  var events = new Array(numEvents)
++  for(var i=0; i<numSegments; ++i) {
++    var s = segments[i]
++    var f = s[0][0] < s[1][0]
++    events[2*i] = new Event(s[0][0], s, f, i)
++    events[2*i+1] = new Event(s[1][0], s, !f, i)
++  }
++  events.sort(function(a,b) {
++    var d = a.x - b.x
++    if(d) {
++      return d
+     }
+-    return 0
++    d = a.create - b.create
++    if(d) {
++      return d
++    }
++    return Math.min(a.segment[0][1], a.segment[1][1]) - Math.min(b.segment[0][1], b.segment[1][1])
++  })
++  var tree = createRBTree(orderSegments)
++  var slabs = []
++  var lines = []
++  var horizontal = []
++  var lastX = -Infinity
++  for(var i=0; i<numEvents; ) {
++    var x = events[i].x
++    var horiz = []
++    while(i < numEvents) {
++      var e = events[i]
++      if(e.x !== x) {
++        break
++      }
++      i += 1
++      if(e.segment[0][0] === e.x && e.segment[1][0] === e.x) {
++        if(e.create) {
++          if(e.segment[0][1] < e.segment[1][1]) {
++            horiz.push(new IntervalSegment(
++                e.segment[0][1],
++                e.index,
++                true,
++                true))
++            horiz.push(new IntervalSegment(
++                e.segment[1][1],
++                e.index,
++                false,
++                false))
++          } else {
++            horiz.push(new IntervalSegment(
++                e.segment[1][1],
++                e.index,
++                true,
++                false))
++            horiz.push(new IntervalSegment(
++                e.segment[0][1],
++                e.index,
++                false,
++                true))
++          }
++        }
++      } else {
++        if(e.create) {
++          tree = tree.insert(e.segment, e.index)
++        } else {
++          tree = tree.remove(e.segment)
++        }
++      }
++    }
++    slabs.push(tree.root)
++    lines.push(x)
++    horizontal.push(horiz)
+   }
+-})
++  return new SlabDecomposition(slabs, lines, horizontal)
++}
++},{"./lib/order-segments":151,"binary-search-bounds":27,"functional-red-black-tree":61,"robust-orientation":140}],153:[function(require,module,exports){
++(function(window) {
++    var re = {
++        not_string: /[^s]/,
++        number: /[diefg]/,
++        json: /[j]/,
++        not_json: /[^j]/,
++        text: /^[^\x25]+/,
++        modulo: /^\x25{2}/,
++        placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijosuxX])/,
++        key: /^([a-z_][a-z_\d]*)/i,
++        key_access: /^\.([a-z_][a-z_\d]*)/i,
++        index_access: /^\[(\d+)\]/,
++        sign: /^[\+\-]/
++    }
+ 
+-Object.defineProperty(tproto, "intervals", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root.intervals([])
++    function sprintf() {
++        var key = arguments[0], cache = sprintf.cache
++        if (!(cache[key] && cache.hasOwnProperty(key))) {
++            cache[key] = sprintf.parse(key)
++        }
++        return sprintf.format.call(null, cache[key], arguments)
+     }
+-    return []
+-  }
+-})
+ 
+-function createWrapper(intervals) {
+-  if(!intervals || intervals.length === 0) {
+-    return new IntervalTree(null)
+-  }
+-  return new IntervalTree(createIntervalTree(intervals))
+-}
++    sprintf.format = function(parse_tree, argv) {
++        var cursor = 1, tree_length = parse_tree.length, node_type = "", arg, output = [], i, k, match, pad, pad_character, pad_length, is_positive = true, sign = ""
++        for (i = 0; i < tree_length; i++) {
++            node_type = get_type(parse_tree[i])
++            if (node_type === "string") {
++                output[output.length] = parse_tree[i]
++            }
++            else if (node_type === "array") {
++                match = parse_tree[i] // convenience purposes only
++                if (match[2]) { // keyword argument
++                    arg = argv[cursor]
++                    for (k = 0; k < match[2].length; k++) {
++                        if (!arg.hasOwnProperty(match[2][k])) {
++                            throw new Error(sprintf("[sprintf] property '%s' does not exist", match[2][k]))
++                        }
++                        arg = arg[match[2][k]]
++                    }
++                }
++                else if (match[1]) { // positional argument (explicit)
++                    arg = argv[match[1]]
++                }
++                else { // positional argument (implicit)
++                    arg = argv[cursor++]
++                }
+ 
+-},{"binary-search-bounds":161}],163:[function(require,module,exports){
+-"use strict"
++                if (get_type(arg) == "function") {
++                    arg = arg()
++                }
+ 
+-module.exports = orderSegments
++                if (re.not_string.test(match[8]) && re.not_json.test(match[8]) && (get_type(arg) != "number" && isNaN(arg))) {
++                    throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg)))
++                }
+ 
+-var orient = require("robust-orientation")
++                if (re.number.test(match[8])) {
++                    is_positive = arg >= 0
++                }
+ 
+-function horizontalOrder(a, b) {
+-  var bl, br
+-  if(b[0][0] < b[1][0]) {
+-    bl = b[0]
+-    br = b[1]
+-  } else if(b[0][0] > b[1][0]) {
+-    bl = b[1]
+-    br = b[0]
+-  } else {
+-    var alo = Math.min(a[0][1], a[1][1])
+-    var ahi = Math.max(a[0][1], a[1][1])
+-    var blo = Math.min(b[0][1], b[1][1])
+-    var bhi = Math.max(b[0][1], b[1][1])
+-    if(ahi < blo) {
+-      return ahi - blo
++                switch (match[8]) {
++                    case "b":
++                        arg = arg.toString(2)
++                    break
++                    case "c":
++                        arg = String.fromCharCode(arg)
++                    break
++                    case "d":
++                    case "i":
++                        arg = parseInt(arg, 10)
++                    break
++                    case "j":
++                        arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
++                    break
++                    case "e":
++                        arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential()
++                    break
++                    case "f":
++                        arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
++                    break
++                    case "g":
++                        arg = match[7] ? parseFloat(arg).toPrecision(match[7]) : parseFloat(arg)
++                    break
++                    case "o":
++                        arg = arg.toString(8)
++                    break
++                    case "s":
++                        arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg)
++                    break
++                    case "u":
++                        arg = arg >>> 0
++                    break
++                    case "x":
++                        arg = arg.toString(16)
++                    break
++                    case "X":
++                        arg = arg.toString(16).toUpperCase()
++                    break
++                }
++                if (re.json.test(match[8])) {
++                    output[output.length] = arg
++                }
++                else {
++                    if (re.number.test(match[8]) && (!is_positive || match[3])) {
++                        sign = is_positive ? "+" : "-"
++                        arg = arg.toString().replace(re.sign, "")
++                    }
++                    else {
++                        sign = ""
++                    }
++                    pad_character = match[4] ? match[4] === "0" ? "0" : match[4].charAt(1) : " "
++                    pad_length = match[6] - (sign + arg).length
++                    pad = match[6] ? (pad_length > 0 ? str_repeat(pad_character, pad_length) : "") : ""
++                    output[output.length] = match[5] ? sign + arg + pad : (pad_character === "0" ? sign + pad + arg : pad + sign + arg)
++                }
++            }
++        }
++        return output.join("")
++    }
++
++    sprintf.cache = {}
++
++    sprintf.parse = function(fmt) {
++        var _fmt = fmt, match = [], parse_tree = [], arg_names = 0
++        while (_fmt) {
++            if ((match = re.text.exec(_fmt)) !== null) {
++                parse_tree[parse_tree.length] = match[0]
++            }
++            else if ((match = re.modulo.exec(_fmt)) !== null) {
++                parse_tree[parse_tree.length] = "%"
++            }
++            else if ((match = re.placeholder.exec(_fmt)) !== null) {
++                if (match[2]) {
++                    arg_names |= 1
++                    var field_list = [], replacement_field = match[2], field_match = []
++                    if ((field_match = re.key.exec(replacement_field)) !== null) {
++                        field_list[field_list.length] = field_match[1]
++                        while ((replacement_field = replacement_field.substring(field_match[0].length)) !== "") {
++                            if ((field_match = re.key_access.exec(replacement_field)) !== null) {
++                                field_list[field_list.length] = field_match[1]
++                            }
++                            else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
++                                field_list[field_list.length] = field_match[1]
++                            }
++                            else {
++                                throw new SyntaxError("[sprintf] failed to parse named argument key")
++                            }
++                        }
++                    }
++                    else {
++                        throw new SyntaxError("[sprintf] failed to parse named argument key")
++                    }
++                    match[2] = field_list
++                }
++                else {
++                    arg_names |= 2
++                }
++                if (arg_names === 3) {
++                    throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
++                }
++                parse_tree[parse_tree.length] = match
++            }
++            else {
++                throw new SyntaxError("[sprintf] unexpected placeholder")
++            }
++            _fmt = _fmt.substring(match[0].length)
++        }
++        return parse_tree
+     }
+-    if(alo > bhi) {
+-      return alo - bhi
++
++    var vsprintf = function(fmt, argv, _argv) {
++        _argv = (argv || []).slice(0)
++        _argv.splice(0, 0, fmt)
++        return sprintf.apply(null, _argv)
+     }
+-    return ahi - bhi
+-  }
+-  var al, ar
+-  if(a[0][1] < a[1][1]) {
+-    al = a[0]
+-    ar = a[1]
+-  } else {
+-    al = a[1]
+-    ar = a[0]
+-  }
+-  var d = orient(br, bl, al)
+-  if(d) {
+-    return d
+-  }
+-  d = orient(br, bl, ar)
+-  if(d) {
+-    return d
+-  }
+-  return ar - br
+-}
+ 
+-function orderSegments(b, a) {
+-  var al, ar
+-  if(a[0][0] < a[1][0]) {
+-    al = a[0]
+-    ar = a[1]
+-  } else if(a[0][0] > a[1][0]) {
+-    al = a[1]
+-    ar = a[0]
+-  } else {
+-    return horizontalOrder(a, b)
+-  }
+-  var bl, br
+-  if(b[0][0] < b[1][0]) {
+-    bl = b[0]
+-    br = b[1]
+-  } else if(b[0][0] > b[1][0]) {
+-    bl = b[1]
+-    br = b[0]
+-  } else {
+-    return -horizontalOrder(b, a)
+-  }
+-  var d1 = orient(al, ar, br)
+-  var d2 = orient(al, ar, bl)
+-  if(d1 < 0) {
+-    if(d2 <= 0) {
+-      return d1
++    /**
++     * helpers
++     */
++    function get_type(variable) {
++        return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase()
+     }
+-  } else if(d1 > 0) {
+-    if(d2 >= 0) {
+-      return d1
++
++    function str_repeat(input, multiplier) {
++        return Array(multiplier + 1).join(input)
+     }
+-  } else if(d2) {
+-    return d2
+-  }
+-  d1 = orient(br, bl, ar)
+-  d2 = orient(br, bl, al)
+-  if(d1 < 0) {
+-    if(d2 <= 0) {
+-      return d1
++
++    /**
++     * export to either browser or node.js
++     */
++    if (typeof exports !== "undefined") {
++        exports.sprintf = sprintf
++        exports.vsprintf = vsprintf
+     }
+-  } else if(d1 > 0) {
+-    if(d2 >= 0) {
+-      return d1
++    else {
++        window.sprintf = sprintf
++        window.vsprintf = vsprintf
++
++        if (typeof define === "function" && define.amd) {
++            define(function() {
++                return {
++                    sprintf: sprintf,
++                    vsprintf: vsprintf
++                }
++            })
++        }
+     }
+-  } else if(d2) {
+-    return d2
+-  }
+-  return ar[0] - br[0]
+-}
+-},{"robust-orientation":133}],164:[function(require,module,exports){
+-"use strict"
++})(typeof window === "undefined" ? this : window);
+ 
+-module.exports = createRBTree
++},{}],154:[function(require,module,exports){
++'use strict'
+ 
+-var RED   = 0
+-var BLACK = 1
++module.exports = toSuperScript
+ 
+-function RBNode(color, key, value, left, right, count) {
+-  this._color = color
+-  this.key = key
+-  this.value = value
+-  this.left = left
+-  this.right = right
+-  this._count = count
++var SUPERSCRIPTS = {
++  ' ': ' ',
++  '0': '⁰',
++  '1': '¹',
++  '2': '²',
++  '3': '³',
++  '4': '⁴',
++  '5': '⁵',
++  '6': '⁶',
++  '7': '⁷',
++  '8': '⁸',
++  '9': '⁹',
++  '+': '⁺',
++  '-': '⁻',
++  'a': 'ᵃ',
++  'b': 'ᵇ',
++  'c': 'ᶜ',
++  'd': 'ᵈ',
++  'e': 'ᵉ',
++  'f': 'ᶠ',
++  'g': 'ᵍ',
++  'h': 'ʰ',
++  'i': 'ⁱ',
++  'j': 'ʲ',
++  'k': 'ᵏ',
++  'l': 'ˡ',
++  'm': 'ᵐ',
++  'n': 'ⁿ',
++  'o': 'ᵒ',
++  'p': 'ᵖ',
++  'r': 'ʳ',
++  's': 'ˢ',
++  't': 'ᵗ',
++  'u': 'ᵘ',
++  'v': 'ᵛ',
++  'w': 'ʷ',
++  'x': 'ˣ',
++  'y': 'ʸ',
++  'z': 'ᶻ'
+ }
+ 
+-function cloneNode(node) {
+-  return new RBNode(node._color, node.key, node.value, node.left, node.right, node._count)
++function toSuperScript(x) {
++  return x.split('').map(function(c) {
++    if(c in SUPERSCRIPTS) {
++      return SUPERSCRIPTS[c]
++    }
++    return ''
++  }).join('')
+ }
+ 
+-function repaint(color, node) {
+-  return new RBNode(color, node.key, node.value, node.left, node.right, node._count)
+-}
++},{}],155:[function(require,module,exports){
++"use strict"
+ 
+-function recount(node) {
+-  node._count = 1 + (node.left ? node.left._count : 0) + (node.right ? node.right._count : 0)
+-}
++module.exports = surfaceNets
+ 
+-function RedBlackTree(compare, root) {
+-  this._compare = compare
+-  this.root = root
+-}
++var generateContourExtractor = require("ndarray-extract-contour")
++var triangulateCube = require("triangulate-hypercube")
++var zeroCrossings = require("zero-crossings")
+ 
+-var proto = RedBlackTree.prototype
++function buildSurfaceNets(order, dtype) {
++  var dimension = order.length
++  var code = ["'use strict';"]
++  var funcName = "surfaceNets" + order.join("_") + "d" + dtype
+ 
+-Object.defineProperty(proto, "keys", {
+-  get: function() {
+-    var result = []
+-    this.forEach(function(k,v) {
+-      result.push(k)
+-    })
+-    return result
++  //Contour extraction function
++  code.push(
++    "var contour=genContour({",
++      "order:[", order.join(), "],",
++      "scalarArguments: 3,",
++      "phase:function phaseFunc(p,a,b,c) { return (p > c)|0 },")
++  if(dtype === "generic") {
++    code.push("getters:[0],")
+   }
+-})
+ 
+-Object.defineProperty(proto, "values", {
+-  get: function() {
+-    var result = []
+-    this.forEach(function(k,v) {
+-      result.push(v)
+-    })
+-    return result
++  //Generate vertex function
++  var cubeArgs = []
++  var extraArgs = []
++  for(var i=0; i<dimension; ++i) {
++    cubeArgs.push("d" + i)
++    extraArgs.push("d" + i)
+   }
+-})
+-
+-//Returns the number of nodes in the tree
+-Object.defineProperty(proto, "length", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root._count
+-    }
+-    return 0
++  for(var i=0; i<(1<<dimension); ++i) {
++    cubeArgs.push("v" + i)
++    extraArgs.push("v" + i)
+   }
+-})
+-
+-//Insert a new item into the tree
+-proto.insert = function(key, value) {
+-  var cmp = this._compare
+-  //Find point to insert new node at
+-  var n = this.root
+-  var n_stack = []
+-  var d_stack = []
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    n_stack.push(n)
+-    d_stack.push(d)
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
++  for(var i=0; i<(1<<dimension); ++i) {
++    cubeArgs.push("p" + i)
++    extraArgs.push("p" + i)
+   }
+-  //Rebuild path to leaf node
+-  n_stack.push(new RBNode(RED, key, value, null, null, 1))
+-  for(var s=n_stack.length-2; s>=0; --s) {
+-    var n = n_stack[s]
+-    if(d_stack[s] <= 0) {
+-      n_stack[s] = new RBNode(n._color, n.key, n.value, n_stack[s+1], n.right, n._count+1)
+-    } else {
+-      n_stack[s] = new RBNode(n._color, n.key, n.value, n.left, n_stack[s+1], n._count+1)
+-    }
++  cubeArgs.push("a", "b", "c")
++  extraArgs.push("a", "c")
++  code.push("vertex:function vertexFunc(", cubeArgs.join(), "){")
++  //Mask args together
++  var maskStr = []
++  for(var i=0; i<(1<<dimension); ++i) {
++    maskStr.push("(p" + i + "<<" + i + ")")
+   }
+-  //Rebalance tree using rotations
+-  //console.log("start insert", key, d_stack)
+-  for(var s=n_stack.length-1; s>1; --s) {
+-    var p = n_stack[s-1]
+-    var n = n_stack[s]
+-    if(p._color === BLACK || n._color === BLACK) {
+-      break
++  //Generate variables and giganto switch statement
++  code.push("var m=(", maskStr.join("+"), ")|0;if(m===0||m===", (1<<(1<<dimension))-1, "){return}")
++  var extraFuncs = []
++  var currentFunc = []
++  if(1<<(1<<dimension) <= 128) {
++    code.push("switch(m){")
++    currentFunc = code
++  } else {
++    code.push("switch(m>>>7){")
++  }
++  for(var i=0; i<1<<(1<<dimension); ++i) {
++    if(1<<(1<<dimension) > 128) {
++      if((i%128)===0) {
++        if(extraFuncs.length > 0) {
++          currentFunc.push("}}")
++        }
++        var efName = "vExtra" + extraFuncs.length
++        code.push("case ", (i>>>7), ":", efName, "(m&0x7f,", extraArgs.join(), ");break;")
++        currentFunc = [
++          "function ", efName, "(m,", extraArgs.join(), "){switch(m){"
++        ]
++        extraFuncs.push(currentFunc)
++      }  
+     }
+-    var pp = n_stack[s-2]
+-    if(pp.left === p) {
+-      if(p.left === n) {
+-        var y = pp.right
+-        if(y && y._color === RED) {
+-          //console.log("LLr")
+-          p._color = BLACK
+-          pp.right = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("LLb")
+-          pp._color = RED
+-          pp.left = p.right
+-          p._color = BLACK
+-          p.right = pp
+-          n_stack[s-2] = p
+-          n_stack[s-1] = n
+-          recount(pp)
+-          recount(p)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.left === pp) {
+-              ppp.left = p
+-            } else {
+-              ppp.right = p
+-            }
+-          }
+-          break
++    currentFunc.push("case ", (i&0x7f), ":")
++    var crossings = new Array(dimension)
++    var denoms = new Array(dimension)
++    var crossingCount = new Array(dimension)
++    var bias = new Array(dimension)
++    var totalCrossings = 0
++    for(var j=0; j<dimension; ++j) {
++      crossings[j] = []
++      denoms[j] = []
++      crossingCount[j] = 0
++      bias[j] = 0
++    }
++    for(var j=0; j<(1<<dimension); ++j) {
++      for(var k=0; k<dimension; ++k) {
++        var u = j ^ (1<<k)
++        if(u > j) {
++          continue
+         }
+-      } else {
+-        var y = pp.right
+-        if(y && y._color === RED) {
+-          //console.log("LRr")
+-          p._color = BLACK
+-          pp.right = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("LRb")
+-          p.right = n.left
+-          pp._color = RED
+-          pp.left = n.right
+-          n._color = BLACK
+-          n.left = p
+-          n.right = pp
+-          n_stack[s-2] = n
+-          n_stack[s-1] = p
+-          recount(pp)
+-          recount(p)
+-          recount(n)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.left === pp) {
+-              ppp.left = n
+-            } else {
+-              ppp.right = n
+-            }
++        if(!(i&(1<<u)) !== !(i&(1<<j))) {
++          var sign = 1
++          if(i&(1<<u)) {
++            denoms[k].push("v" + u + "-v" + j)
++          } else {
++            denoms[k].push("v" + j + "-v" + u)
++            sign = -sign
+           }
+-          break
+-        }
+-      }
+-    } else {
+-      if(p.right === n) {
+-        var y = pp.left
+-        if(y && y._color === RED) {
+-          //console.log("RRr", y.key)
+-          p._color = BLACK
+-          pp.left = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("RRb")
+-          pp._color = RED
+-          pp.right = p.left
+-          p._color = BLACK
+-          p.left = pp
+-          n_stack[s-2] = p
+-          n_stack[s-1] = n
+-          recount(pp)
+-          recount(p)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.right === pp) {
+-              ppp.right = p
++          if(sign < 0) {
++            crossings[k].push("-v" + j + "-v" + u)
++            crossingCount[k] += 2
++          } else {
++            crossings[k].push("v" + j + "+v" + u)
++            crossingCount[k] -= 2            
++          }
++          totalCrossings += 1
++          for(var l=0; l<dimension; ++l) {
++            if(l === k) {
++              continue
++            }
++            if(u&(1<<l)) {
++              bias[l] += 1
+             } else {
+-              ppp.left = p
++              bias[l] -= 1
+             }
+           }
+-          break
+         }
++      }
++    }
++    var vertexStr = []
++    for(var k=0; k<dimension; ++k) {
++      if(crossings[k].length === 0) {
++        vertexStr.push("d" + k + "-0.5")
+       } else {
+-        var y = pp.left
+-        if(y && y._color === RED) {
+-          //console.log("RLr")
+-          p._color = BLACK
+-          pp.left = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("RLb")
+-          p.left = n.right
+-          pp._color = RED
+-          pp.right = n.left
+-          n._color = BLACK
+-          n.right = p
+-          n.left = pp
+-          n_stack[s-2] = n
+-          n_stack[s-1] = p
+-          recount(pp)
+-          recount(p)
+-          recount(n)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.right === pp) {
+-              ppp.right = n
+-            } else {
+-              ppp.left = n
+-            }
+-          }
+-          break
++        var cStr = ""
++        if(crossingCount[k] < 0) {
++          cStr = crossingCount[k] + "*c"
++        } else if(crossingCount[k] > 0) {
++          cStr = "+" + crossingCount[k] + "*c"
+         }
++        var weight = 0.5 * (crossings[k].length / totalCrossings)
++        var shift = 0.5 + 0.5 * (bias[k] / totalCrossings)
++        vertexStr.push("d" + k + "-" + shift + "-" + weight + "*(" + crossings[k].join("+") + cStr + ")/(" + denoms[k].join("+") + ")")
++        
+       }
+     }
++    currentFunc.push("a.push([", vertexStr.join(), "]);",
++      "break;")
++  }
++  code.push("}},")
++  if(extraFuncs.length > 0) {
++    currentFunc.push("}}")
++  }
++
++  //Create face function
++  var faceArgs = []
++  for(var i=0; i<(1<<(dimension-1)); ++i) {
++    faceArgs.push("v" + i)
++  }
++  faceArgs.push("c0", "c1", "p0", "p1", "a", "b", "c")
++  code.push("cell:function cellFunc(", faceArgs.join(), "){")
++
++  var facets = triangulateCube(dimension-1)
++  code.push("if(p0){b.push(",
++    facets.map(function(f) {
++      return "[" + f.map(function(v) {
++        return "v" + v
++      }) + "]"
++    }).join(), ")}else{b.push(",
++    facets.map(function(f) {
++      var e = f.slice()
++      e.reverse()
++      return "[" + e.map(function(v) {
++        return "v" + v
++      }) + "]"
++    }).join(),
++    ")}}});function ", funcName, "(array,level){var verts=[],cells=[];contour(array,verts,cells,level);return {positions:verts,cells:cells};} return ", funcName, ";")
++
++  for(var i=0; i<extraFuncs.length; ++i) {
++    code.push(extraFuncs[i].join(""))
+   }
+-  //Return new tree
+-  n_stack[0]._color = BLACK
+-  return new RedBlackTree(cmp, n_stack[0])
+-}
+ 
++  //Compile and link
++  var proc = new Function("genContour", code.join(""))
++  return proc(generateContourExtractor)
++}
+ 
+-//Visit all nodes inorder
+-function doVisitFull(visit, node) {
+-  if(node.left) {
+-    var v = doVisitFull(visit, node.left)
+-    if(v) { return v }
++//1D case: Need to handle specially
++function mesh1D(array, level) {
++  var zc = zeroCrossings(array, level)
++  var n = zc.length
++  var npos = new Array(n)
++  var ncel = new Array(n)
++  for(var i=0; i<n; ++i) {
++    npos[i] = [ zc[i] ]
++    ncel[i] = [ i ]
+   }
+-  var v = visit(node.key, node.value)
+-  if(v) { return v }
+-  if(node.right) {
+-    return doVisitFull(visit, node.right)
++  return {
++    positions: npos,
++    cells: ncel
+   }
+ }
+ 
+-//Visit half nodes in order
+-function doVisitHalf(lo, compare, visit, node) {
+-  var l = compare(lo, node.key)
+-  if(l <= 0) {
+-    if(node.left) {
+-      var v = doVisitHalf(lo, compare, visit, node.left)
+-      if(v) { return v }
+-    }
+-    var v = visit(node.key, node.value)
+-    if(v) { return v }
++var CACHE = {}
++
++function surfaceNets(array,level) {
++  if(array.dimension <= 0) {
++    return { positions: [], cells: [] }
++  } else if(array.dimension === 1) {
++    return mesh1D(array, level)
+   }
+-  if(node.right) {
+-    return doVisitHalf(lo, compare, visit, node.right)
++  var typesig = array.order.join() + "-" + array.dtype
++  var proc = CACHE[typesig]
++  var level = (+level) || 0.0
++  if(!proc) {
++    proc = CACHE[typesig] = buildSurfaceNets(array.order, array.dtype)
+   }
++  return proc(array,level)
+ }
++},{"ndarray-extract-contour":121,"triangulate-hypercube":159,"zero-crossings":171}],156:[function(require,module,exports){
++(function (process){
++'use strict'
+ 
+-//Visit all nodes within a range
+-function doVisit(lo, hi, compare, visit, node) {
+-  var l = compare(lo, node.key)
+-  var h = compare(hi, node.key)
+-  var v
+-  if(l <= 0) {
+-    if(node.left) {
+-      v = doVisit(lo, hi, compare, visit, node.left)
+-      if(v) { return v }
+-    }
+-    if(h > 0) {
+-      v = visit(node.key, node.value)
+-      if(v) { return v }
++module.exports = textGet
++
++var vectorizeText = require('vectorize-text')
++
++var globals = window || process.global || {}
++var __TEXT_CACHE  = globals.__TEXT_CACHE || {}
++globals.__TEXT_CACHE = {}
++
++function unwrap(mesh) {
++  var cells     = mesh.cells
++  var positions = mesh.positions
++  var data      = new Float32Array(cells.length * 6)
++  var ptr       = 0
++  var shapeX    = 0
++  for(var i=0; i<cells.length; ++i) {
++    var tri = cells[i]
++    for(var j=0; j<3; ++j) {
++      var point = positions[tri[j]]
++      data[ptr++] = point[0]
++      data[ptr++] = point[1] + 1.4
++      shapeX      = Math.max(point[0], shapeX)
+     }
+   }
+-  if(h > 0 && node.right) {
+-    return doVisit(lo, hi, compare, visit, node.right)
++  return {
++    data:  data,
++    shape: shapeX
+   }
+ }
+ 
++function textGet(font, text) {
++  var fontcache = __TEXT_CACHE[font]
++   if(!fontcache) {
++     fontcache = __TEXT_CACHE[font] = {
++       ' ': {
++         data:   new Float32Array(0),
++         shape: 0.2
++       }
++     }
++   }
++   var mesh = fontcache[text]
++   if(!mesh) {
++     if(text.length <= 1 || !/\d/.test(text)) {
++       mesh = fontcache[text] = unwrap(vectorizeText(text, {
++         triangles:     true,
++         font:          font,
++         textAlign:     'left',
++         textBaseline:  'alphabetic'
++       }))
++     } else {
++       var parts = text.split(/(\d|\s)/)
++       var buffer = new Array(parts.length)
++       var bufferSize = 0
++       var shapeX = 0
++       for(var i=0; i<parts.length; ++i) {
++         buffer[i] = textGet(font, parts[i])
++         bufferSize += buffer[i].data.length
++         shapeX += buffer[i].shape
++         if(i>0) {
++           shapeX += 0.02
++         }
++       }
+ 
+-proto.forEach = function rbTreeForEach(visit, lo, hi) {
+-  if(!this.root) {
+-    return
+-  }
+-  switch(arguments.length) {
+-    case 1:
+-      return doVisitFull(visit, this.root)
+-    break
++       var data = new Float32Array(bufferSize)
++       var ptr     = 0
++       var xOffset = -0.5 * shapeX
++       for(var i=0; i<buffer.length; ++i) {
++         var bdata = buffer[i].data
++         for(var j=0; j<bdata.length; j+=2) {
++           data[ptr++] = bdata[j] + xOffset
++           data[ptr++] = bdata[j+1]
++         }
++         xOffset += buffer[i].shape + 0.02
++       }
+ 
+-    case 2:
+-      return doVisitHalf(lo, this._compare, visit, this.root)
+-    break
++       mesh = fontcache[text] = {
++         data:  data,
++         shape: shapeX
++       }
++     }
++   }
+ 
+-    case 3:
+-      if(this._compare(lo, hi) >= 0) {
+-        return
+-      }
+-      return doVisit(lo, hi, this._compare, visit, this.root)
+-    break
+-  }
++   return mesh
+ }
+ 
+-//First item in list
+-Object.defineProperty(proto, "begin", {
+-  get: function() {
+-    var stack = []
+-    var n = this.root
+-    while(n) {
+-      stack.push(n)
+-      n = n.left
++}).call(this,require('_process'))
++},{"_process":133,"vectorize-text":165}],157:[function(require,module,exports){
++// TinyColor v1.4.1
++// https://github.com/bgrins/TinyColor
++// Brian Grinstead, MIT License
++
++(function(Math) {
++
++var trimLeft = /^\s+/,
++    trimRight = /\s+$/,
++    tinyCounter = 0,
++    mathRound = Math.round,
++    mathMin = Math.min,
++    mathMax = Math.max,
++    mathRandom = Math.random;
++
++function tinycolor (color, opts) {
++
++    color = (color) ? color : '';
++    opts = opts || { };
++
++    // If input is already a tinycolor, return itself
++    if (color instanceof tinycolor) {
++       return color;
++    }
++    // If we are called as a function, call using new instead
++    if (!(this instanceof tinycolor)) {
++        return new tinycolor(color, opts);
+     }
+-    return new RedBlackTreeIterator(this, stack)
+-  }
+-})
+ 
+-//Last item in list
+-Object.defineProperty(proto, "end", {
+-  get: function() {
+-    var stack = []
+-    var n = this.root
+-    while(n) {
+-      stack.push(n)
+-      n = n.right
++    var rgb = inputToRGB(color);
++    this._originalInput = color,
++    this._r = rgb.r,
++    this._g = rgb.g,
++    this._b = rgb.b,
++    this._a = rgb.a,
++    this._roundA = mathRound(100*this._a) / 100,
++    this._format = opts.format || rgb.format;
++    this._gradientType = opts.gradientType;
++
++    // Don't let the range of [0,255] come back in [0,1].
++    // Potentially lose a little bit of precision here, but will fix issues where
++    // .5 gets interpreted as half of the total, instead of half of 1
++    // If it was supposed to be 128, this was already taken care of by `inputToRgb`
++    if (this._r < 1) { this._r = mathRound(this._r); }
++    if (this._g < 1) { this._g = mathRound(this._g); }
++    if (this._b < 1) { this._b = mathRound(this._b); }
++
++    this._ok = rgb.ok;
++    this._tc_id = tinyCounter++;
++}
++
++tinycolor.prototype = {
++    isDark: function() {
++        return this.getBrightness() < 128;
++    },
++    isLight: function() {
++        return !this.isDark();
++    },
++    isValid: function() {
++        return this._ok;
++    },
++    getOriginalInput: function() {
++      return this._originalInput;
++    },
++    getFormat: function() {
++        return this._format;
++    },
++    getAlpha: function() {
++        return this._a;
++    },
++    getBrightness: function() {
++        //http://www.w3.org/TR/AERT#color-contrast
++        var rgb = this.toRgb();
++        return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
++    },
++    getLuminance: function() {
++        //http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
++        var rgb = this.toRgb();
++        var RsRGB, GsRGB, BsRGB, R, G, B;
++        RsRGB = rgb.r/255;
++        GsRGB = rgb.g/255;
++        BsRGB = rgb.b/255;
++
++        if (RsRGB <= 0.03928) {R = RsRGB / 12.92;} else {R = Math.pow(((RsRGB + 0.055) / 1.055), 2.4);}
++        if (GsRGB <= 0.03928) {G = GsRGB / 12.92;} else {G = Math.pow(((GsRGB + 0.055) / 1.055), 2.4);}
++        if (BsRGB <= 0.03928) {B = BsRGB / 12.92;} else {B = Math.pow(((BsRGB + 0.055) / 1.055), 2.4);}
++        return (0.2126 * R) + (0.7152 * G) + (0.0722 * B);
++    },
++    setAlpha: function(value) {
++        this._a = boundAlpha(value);
++        this._roundA = mathRound(100*this._a) / 100;
++        return this;
++    },
++    toHsv: function() {
++        var hsv = rgbToHsv(this._r, this._g, this._b);
++        return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: this._a };
++    },
++    toHsvString: function() {
++        var hsv = rgbToHsv(this._r, this._g, this._b);
++        var h = mathRound(hsv.h * 360), s = mathRound(hsv.s * 100), v = mathRound(hsv.v * 100);
++        return (this._a == 1) ?
++          "hsv("  + h + ", " + s + "%, " + v + "%)" :
++          "hsva(" + h + ", " + s + "%, " + v + "%, "+ this._roundA + ")";
++    },
++    toHsl: function() {
++        var hsl = rgbToHsl(this._r, this._g, this._b);
++        return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: this._a };
++    },
++    toHslString: function() {
++        var hsl = rgbToHsl(this._r, this._g, this._b);
++        var h = mathRound(hsl.h * 360), s = mathRound(hsl.s * 100), l = mathRound(hsl.l * 100);
++        return (this._a == 1) ?
++          "hsl("  + h + ", " + s + "%, " + l + "%)" :
++          "hsla(" + h + ", " + s + "%, " + l + "%, "+ this._roundA + ")";
++    },
++    toHex: function(allow3Char) {
++        return rgbToHex(this._r, this._g, this._b, allow3Char);
++    },
++    toHexString: function(allow3Char) {
++        return '#' + this.toHex(allow3Char);
++    },
++    toHex8: function(allow4Char) {
++        return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
++    },
++    toHex8String: function(allow4Char) {
++        return '#' + this.toHex8(allow4Char);
++    },
++    toRgb: function() {
++        return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
++    },
++    toRgbString: function() {
++        return (this._a == 1) ?
++          "rgb("  + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ")" :
++          "rgba(" + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ", " + this._roundA + ")";
++    },
++    toPercentageRgb: function() {
++        return { r: mathRound(bound01(this._r, 255) * 100) + "%", g: mathRound(bound01(this._g, 255) * 100) + "%", b: mathRound(bound01(this._b, 255) * 100) + "%", a: this._a };
++    },
++    toPercentageRgbString: function() {
++        return (this._a == 1) ?
++          "rgb("  + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%)" :
++          "rgba(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%, " + this._roundA + ")";
++    },
++    toName: function() {
++        if (this._a === 0) {
++            return "transparent";
++        }
++
++        if (this._a < 1) {
++            return false;
++        }
++
++        return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
++    },
++    toFilter: function(secondColor) {
++        var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
++        var secondHex8String = hex8String;
++        var gradientType = this._gradientType ? "GradientType = 1, " : "";
++
++        if (secondColor) {
++            var s = tinycolor(secondColor);
++            secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
++        }
++
++        return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
++    },
++    toString: function(format) {
++        var formatSet = !!format;
++        format = format || this._format;
++
++        var formattedString = false;
++        var hasAlpha = this._a < 1 && this._a >= 0;
++        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");
++
++        if (needsAlphaFormat) {
++            // Special case for "transparent", all other non-alpha formats
++            // will return rgba when there is transparency.
++            if (format === "name" && this._a === 0) {
++                return this.toName();
++            }
++            return this.toRgbString();
++        }
++        if (format === "rgb") {
++            formattedString = this.toRgbString();
++        }
++        if (format === "prgb") {
++            formattedString = this.toPercentageRgbString();
++        }
++        if (format === "hex" || format === "hex6") {
++            formattedString = this.toHexString();
++        }
++        if (format === "hex3") {
++            formattedString = this.toHexString(true);
++        }
++        if (format === "hex4") {
++            formattedString = this.toHex8String(true);
++        }
++        if (format === "hex8") {
++            formattedString = this.toHex8String();
++        }
++        if (format === "name") {
++            formattedString = this.toName();
++        }
++        if (format === "hsl") {
++            formattedString = this.toHslString();
++        }
++        if (format === "hsv") {
++            formattedString = this.toHsvString();
++        }
++
++        return formattedString || this.toHexString();
++    },
++    clone: function() {
++        return tinycolor(this.toString());
++    },
++
++    _applyModification: function(fn, args) {
++        var color = fn.apply(null, [this].concat([].slice.call(args)));
++        this._r = color._r;
++        this._g = color._g;
++        this._b = color._b;
++        this.setAlpha(color._a);
++        return this;
++    },
++    lighten: function() {
++        return this._applyModification(lighten, arguments);
++    },
++    brighten: function() {
++        return this._applyModification(brighten, arguments);
++    },
++    darken: function() {
++        return this._applyModification(darken, arguments);
++    },
++    desaturate: function() {
++        return this._applyModification(desaturate, arguments);
++    },
++    saturate: function() {
++        return this._applyModification(saturate, arguments);
++    },
++    greyscale: function() {
++        return this._applyModification(greyscale, arguments);
++    },
++    spin: function() {
++        return this._applyModification(spin, arguments);
++    },
++
++    _applyCombination: function(fn, args) {
++        return fn.apply(null, [this].concat([].slice.call(args)));
++    },
++    analogous: function() {
++        return this._applyCombination(analogous, arguments);
++    },
++    complement: function() {
++        return this._applyCombination(complement, arguments);
++    },
++    monochromatic: function() {
++        return this._applyCombination(monochromatic, arguments);
++    },
++    splitcomplement: function() {
++        return this._applyCombination(splitcomplement, arguments);
++    },
++    triad: function() {
++        return this._applyCombination(triad, arguments);
++    },
++    tetrad: function() {
++        return this._applyCombination(tetrad, arguments);
+     }
+-    return new RedBlackTreeIterator(this, stack)
+-  }
+-})
++};
+ 
+-//Find the ith item in the tree
+-proto.at = function(idx) {
+-  if(idx < 0) {
+-    return new RedBlackTreeIterator(this, [])
+-  }
+-  var n = this.root
+-  var stack = []
+-  while(true) {
+-    stack.push(n)
+-    if(n.left) {
+-      if(idx < n.left._count) {
+-        n = n.left
+-        continue
+-      }
+-      idx -= n.left._count
++// If input is an object, force 1 into "1.0" to handle ratios properly
++// String input requires "1.0" as input, so 1 will be treated as 1
++tinycolor.fromRatio = function(color, opts) {
++    if (typeof color == "object") {
++        var newColor = {};
++        for (var i in color) {
++            if (color.hasOwnProperty(i)) {
++                if (i === "a") {
++                    newColor[i] = color[i];
++                }
++                else {
++                    newColor[i] = convertToPercentage(color[i]);
++                }
++            }
++        }
++        color = newColor;
+     }
+-    if(!idx) {
+-      return new RedBlackTreeIterator(this, stack)
++
++    return tinycolor(color, opts);
++};
++
++// Given a string or object, convert that input to RGB
++// Possible string inputs:
++//
++//     "red"
++//     "#f00" or "f00"
++//     "#ff0000" or "ff0000"
++//     "#ff000000" or "ff000000"
++//     "rgb 255 0 0" or "rgb (255, 0, 0)"
++//     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
++//     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
++//     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
++//     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
++//     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
++//     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
++//
++function inputToRGB(color) {
++
++    var rgb = { r: 0, g: 0, b: 0 };
++    var a = 1;
++    var s = null;
++    var v = null;
++    var l = null;
++    var ok = false;
++    var format = false;
++
++    if (typeof color == "string") {
++        color = stringInputToObject(color);
+     }
+-    idx -= 1
+-    if(n.right) {
+-      if(idx >= n.right._count) {
+-        break
+-      }
+-      n = n.right
+-    } else {
+-      break
++
++    if (typeof color == "object") {
++        if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
++            rgb = rgbToRgb(color.r, color.g, color.b);
++            ok = true;
++            format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
++        }
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
++            s = convertToPercentage(color.s);
++            v = convertToPercentage(color.v);
++            rgb = hsvToRgb(color.h, s, v);
++            ok = true;
++            format = "hsv";
++        }
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
++            s = convertToPercentage(color.s);
++            l = convertToPercentage(color.l);
++            rgb = hslToRgb(color.h, s, l);
++            ok = true;
++            format = "hsl";
++        }
++
++        if (color.hasOwnProperty("a")) {
++            a = color.a;
++        }
+     }
+-  }
+-  return new RedBlackTreeIterator(this, [])
++
++    a = boundAlpha(a);
++
++    return {
++        ok: ok,
++        format: color.format || format,
++        r: mathMin(255, mathMax(rgb.r, 0)),
++        g: mathMin(255, mathMax(rgb.g, 0)),
++        b: mathMin(255, mathMax(rgb.b, 0)),
++        a: a
++    };
+ }
+ 
+-proto.ge = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d <= 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
+-  }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++
++// Conversion Functions
++// --------------------
++
++// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
++// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>
++
++// `rgbToRgb`
++// Handle bounds / percentage checking to conform to CSS color spec
++// <http://www.w3.org/TR/css3-color/>
++// *Assumes:* r, g, b in [0, 255] or [0, 1]
++// *Returns:* { r, g, b } in [0, 255]
++function rgbToRgb(r, g, b){
++    return {
++        r: bound01(r, 255) * 255,
++        g: bound01(g, 255) * 255,
++        b: bound01(b, 255) * 255
++    };
+ }
+ 
+-proto.gt = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d < 0) {
+-      last_ptr = stack.length
++// `rgbToHsl`
++// Converts an RGB color value to HSL.
++// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
++// *Returns:* { h, s, l } in [0,1]
++function rgbToHsl(r, g, b) {
++
++    r = bound01(r, 255);
++    g = bound01(g, 255);
++    b = bound01(b, 255);
++
++    var max = mathMax(r, g, b), min = mathMin(r, g, b);
++    var h, s, l = (max + min) / 2;
++
++    if(max == min) {
++        h = s = 0; // achromatic
+     }
+-    if(d < 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++    else {
++        var d = max - min;
++        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
++        switch(max) {
++            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
++            case g: h = (b - r) / d + 2; break;
++            case b: h = (r - g) / d + 4; break;
++        }
++
++        h /= 6;
+     }
+-  }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++
++    return { h: h, s: s, l: l };
+ }
+ 
+-proto.lt = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d > 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++// `hslToRgb`
++// Converts an HSL color value to RGB.
++// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
++// *Returns:* { r, g, b } in the set [0, 255]
++function hslToRgb(h, s, l) {
++    var r, g, b;
++
++    h = bound01(h, 360);
++    s = bound01(s, 100);
++    l = bound01(l, 100);
++
++    function hue2rgb(p, q, t) {
++        if(t < 0) t += 1;
++        if(t > 1) t -= 1;
++        if(t < 1/6) return p + (q - p) * 6 * t;
++        if(t < 1/2) return q;
++        if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
++        return p;
+     }
+-  }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
+-}
+ 
+-proto.le = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d >= 0) {
+-      last_ptr = stack.length
++    if(s === 0) {
++        r = g = b = l; // achromatic
+     }
+-    if(d < 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++    else {
++        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
++        var p = 2 * l - q;
++        r = hue2rgb(p, q, h + 1/3);
++        g = hue2rgb(p, q, h);
++        b = hue2rgb(p, q, h - 1/3);
+     }
+-  }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++
++    return { r: r * 255, g: g * 255, b: b * 255 };
+ }
+ 
+-//Finds the item with key if it exists
+-proto.find = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d === 0) {
+-      return new RedBlackTreeIterator(this, stack)
++// `rgbToHsv`
++// Converts an RGB color value to HSV
++// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
++// *Returns:* { h, s, v } in [0,1]
++function rgbToHsv(r, g, b) {
++
++    r = bound01(r, 255);
++    g = bound01(g, 255);
++    b = bound01(b, 255);
++
++    var max = mathMax(r, g, b), min = mathMin(r, g, b);
++    var h, s, v = max;
++
++    var d = max - min;
++    s = max === 0 ? 0 : d / max;
++
++    if(max == min) {
++        h = 0; // achromatic
+     }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++    else {
++        switch(max) {
++            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
++            case g: h = (b - r) / d + 2; break;
++            case b: h = (r - g) / d + 4; break;
++        }
++        h /= 6;
+     }
+-  }
+-  return new RedBlackTreeIterator(this, [])
++    return { h: h, s: s, v: v };
+ }
+ 
+-//Removes item with key from tree
+-proto.remove = function(key) {
+-  var iter = this.find(key)
+-  if(iter) {
+-    return iter.remove()
+-  }
+-  return this
++// `hsvToRgb`
++// Converts an HSV color value to RGB.
++// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
++// *Returns:* { r, g, b } in the set [0, 255]
++ function hsvToRgb(h, s, v) {
++
++    h = bound01(h, 360) * 6;
++    s = bound01(s, 100);
++    v = bound01(v, 100);
++
++    var i = Math.floor(h),
++        f = h - i,
++        p = v * (1 - s),
++        q = v * (1 - f * s),
++        t = v * (1 - (1 - f) * s),
++        mod = i % 6,
++        r = [v, q, p, p, t, v][mod],
++        g = [t, v, v, q, p, p][mod],
++        b = [p, p, t, v, v, q][mod];
++
++    return { r: r * 255, g: g * 255, b: b * 255 };
+ }
+ 
+-//Returns the item at `key`
+-proto.get = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    if(d === 0) {
+-      return n.value
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++// `rgbToHex`
++// Converts an RGB color to hex
++// Assumes r, g, and b are contained in the set [0, 255]
++// Returns a 3 or 6 character hex
++function rgbToHex(r, g, b, allow3Char) {
++
++    var hex = [
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16))
++    ];
++
++    // Return a 3 character hex if possible
++    if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
++        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
+     }
+-  }
+-  return
+-}
+ 
+-//Iterator for red black tree
+-function RedBlackTreeIterator(tree, stack) {
+-  this.tree = tree
+-  this._stack = stack
++    return hex.join("");
+ }
+ 
+-var iproto = RedBlackTreeIterator.prototype
++// `rgbaToHex`
++// Converts an RGBA color plus alpha transparency to hex
++// Assumes r, g, b are contained in the set [0, 255] and
++// a in [0, 1]. Returns a 4 or 8 character rgba hex
++function rgbaToHex(r, g, b, a, allow4Char) {
+ 
+-//Test if iterator is valid
+-Object.defineProperty(iproto, "valid", {
+-  get: function() {
+-    return this._stack.length > 0
+-  }
+-})
++    var hex = [
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16)),
++        pad2(convertDecimalToHex(a))
++    ];
+ 
+-//Node of the iterator
+-Object.defineProperty(iproto, "node", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1]
++    // Return a 4 character hex if possible
++    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
++        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
+     }
+-    return null
+-  },
+-  enumerable: true
+-})
+ 
+-//Makes a copy of an iterator
+-iproto.clone = function() {
+-  return new RedBlackTreeIterator(this.tree, this._stack.slice())
++    return hex.join("");
+ }
+ 
+-//Swaps two nodes
+-function swapNode(n, v) {
+-  n.key = v.key
+-  n.value = v.value
+-  n.left = v.left
+-  n.right = v.right
+-  n._color = v._color
+-  n._count = v._count
++// `rgbaToArgbHex`
++// Converts an RGBA color to an ARGB Hex8 string
++// Rarely used, but required for "toFilter()"
++function rgbaToArgbHex(r, g, b, a) {
++
++    var hex = [
++        pad2(convertDecimalToHex(a)),
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16))
++    ];
++
++    return hex.join("");
+ }
+ 
+-//Fix up a double black node in a tree
+-function fixDoubleBlack(stack) {
+-  var n, p, s, z
+-  for(var i=stack.length-1; i>=0; --i) {
+-    n = stack[i]
+-    if(i === 0) {
+-      n._color = BLACK
+-      return
+-    }
+-    //console.log("visit node:", n.key, i, stack[i].key, stack[i-1].key)
+-    p = stack[i-1]
+-    if(p.left === n) {
+-      //console.log("left child")
+-      s = p.right
+-      if(s.right && s.right._color === RED) {
+-        //console.log("case 1: right sibling child red")
+-        s = p.right = cloneNode(s)
+-        z = s.right = cloneNode(s.right)
+-        p.right = s.left
+-        s.left = p
+-        s.right = z
+-        s._color = p._color
+-        n._color = BLACK
+-        p._color = BLACK
+-        z._color = BLACK
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = s
+-          } else {
+-            pp.right = s
+-          }
+-        }
+-        stack[i-1] = s
+-        return
+-      } else if(s.left && s.left._color === RED) {
+-        //console.log("case 1: left sibling child red")
+-        s = p.right = cloneNode(s)
+-        z = s.left = cloneNode(s.left)
+-        p.right = z.left
+-        s.left = z.right
+-        z.left = p
+-        z.right = s
+-        z._color = p._color
+-        p._color = BLACK
+-        s._color = BLACK
+-        n._color = BLACK
+-        recount(p)
+-        recount(s)
+-        recount(z)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = z
+-          } else {
+-            pp.right = z
+-          }
+-        }
+-        stack[i-1] = z
+-        return
+-      }
+-      if(s._color === BLACK) {
+-        if(p._color === RED) {
+-          //console.log("case 2: black sibling, red parent", p.right.value)
+-          p._color = BLACK
+-          p.right = repaint(RED, s)
+-          return
+-        } else {
+-          //console.log("case 2: black sibling, black parent", p.right.value)
+-          p.right = repaint(RED, s)
+-          continue  
+-        }
+-      } else {
+-        //console.log("case 3: red sibling")
+-        s = cloneNode(s)
+-        p.right = s.left
+-        s.left = p
+-        s._color = p._color
+-        p._color = RED
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = s
+-          } else {
+-            pp.right = s
+-          }
+-        }
+-        stack[i-1] = s
+-        stack[i] = p
+-        if(i+1 < stack.length) {
+-          stack[i+1] = n
+-        } else {
+-          stack.push(n)
+-        }
+-        i = i+2
+-      }
+-    } else {
+-      //console.log("right child")
+-      s = p.left
+-      if(s.left && s.left._color === RED) {
+-        //console.log("case 1: left sibling child red", p.value, p._color)
+-        s = p.left = cloneNode(s)
+-        z = s.left = cloneNode(s.left)
+-        p.left = s.right
+-        s.right = p
+-        s.left = z
+-        s._color = p._color
+-        n._color = BLACK
+-        p._color = BLACK
+-        z._color = BLACK
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = s
+-          } else {
+-            pp.left = s
+-          }
+-        }
+-        stack[i-1] = s
+-        return
+-      } else if(s.right && s.right._color === RED) {
+-        //console.log("case 1: right sibling child red")
+-        s = p.left = cloneNode(s)
+-        z = s.right = cloneNode(s.right)
+-        p.left = z.right
+-        s.right = z.left
+-        z.right = p
+-        z.left = s
+-        z._color = p._color
+-        p._color = BLACK
+-        s._color = BLACK
+-        n._color = BLACK
+-        recount(p)
+-        recount(s)
+-        recount(z)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = z
+-          } else {
+-            pp.left = z
+-          }
+-        }
+-        stack[i-1] = z
+-        return
+-      }
+-      if(s._color === BLACK) {
+-        if(p._color === RED) {
+-          //console.log("case 2: black sibling, red parent")
+-          p._color = BLACK
+-          p.left = repaint(RED, s)
+-          return
+-        } else {
+-          //console.log("case 2: black sibling, black parent")
+-          p.left = repaint(RED, s)
+-          continue  
+-        }
+-      } else {
+-        //console.log("case 3: red sibling")
+-        s = cloneNode(s)
+-        p.left = s.right
+-        s.right = p
+-        s._color = p._color
+-        p._color = RED
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = s
+-          } else {
+-            pp.left = s
+-          }
+-        }
+-        stack[i-1] = s
+-        stack[i] = p
+-        if(i+1 < stack.length) {
+-          stack[i+1] = n
+-        } else {
+-          stack.push(n)
+-        }
+-        i = i+2
+-      }
++// `equals`
++// Can be called with any tinycolor input
++tinycolor.equals = function (color1, color2) {
++    if (!color1 || !color2) { return false; }
++    return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
++};
++
++tinycolor.random = function() {
++    return tinycolor.fromRatio({
++        r: mathRandom(),
++        g: mathRandom(),
++        b: mathRandom()
++    });
++};
++
++
++// Modification Functions
++// ----------------------
++// Thanks to less.js for some of the basics here
++// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>
++
++function desaturate(color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.s -= amount / 100;
++    hsl.s = clamp01(hsl.s);
++    return tinycolor(hsl);
++}
++
++function saturate(color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.s += amount / 100;
++    hsl.s = clamp01(hsl.s);
++    return tinycolor(hsl);
++}
++
++function greyscale(color) {
++    return tinycolor(color).desaturate(100);
++}
++
++function lighten (color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.l += amount / 100;
++    hsl.l = clamp01(hsl.l);
++    return tinycolor(hsl);
++}
++
++function brighten(color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var rgb = tinycolor(color).toRgb();
++    rgb.r = mathMax(0, mathMin(255, rgb.r - mathRound(255 * - (amount / 100))));
++    rgb.g = mathMax(0, mathMin(255, rgb.g - mathRound(255 * - (amount / 100))));
++    rgb.b = mathMax(0, mathMin(255, rgb.b - mathRound(255 * - (amount / 100))));
++    return tinycolor(rgb);
++}
++
++function darken (color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.l -= amount / 100;
++    hsl.l = clamp01(hsl.l);
++    return tinycolor(hsl);
++}
++
++// Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
++// Values outside of this range will be wrapped into this range.
++function spin(color, amount) {
++    var hsl = tinycolor(color).toHsl();
++    var hue = (hsl.h + amount) % 360;
++    hsl.h = hue < 0 ? 360 + hue : hue;
++    return tinycolor(hsl);
++}
++
++// Combination Functions
++// ---------------------
++// Thanks to jQuery xColor for some of the ideas behind these
++// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>
++
++function complement(color) {
++    var hsl = tinycolor(color).toHsl();
++    hsl.h = (hsl.h + 180) % 360;
++    return tinycolor(hsl);
++}
++
++function triad(color) {
++    var hsl = tinycolor(color).toHsl();
++    var h = hsl.h;
++    return [
++        tinycolor(color),
++        tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
++        tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
++    ];
++}
++
++function tetrad(color) {
++    var hsl = tinycolor(color).toHsl();
++    var h = hsl.h;
++    return [
++        tinycolor(color),
++        tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
++        tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
++        tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
++    ];
++}
++
++function splitcomplement(color) {
++    var hsl = tinycolor(color).toHsl();
++    var h = hsl.h;
++    return [
++        tinycolor(color),
++        tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l}),
++        tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l})
++    ];
++}
++
++function analogous(color, results, slices) {
++    results = results || 6;
++    slices = slices || 30;
++
++    var hsl = tinycolor(color).toHsl();
++    var part = 360 / slices;
++    var ret = [tinycolor(color)];
++
++    for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results; ) {
++        hsl.h = (hsl.h + part) % 360;
++        ret.push(tinycolor(hsl));
+     }
+-  }
++    return ret;
+ }
+ 
+-//Removes item at iterator from tree
+-iproto.remove = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return this.tree
+-  }
+-  //First copy path to node
+-  var cstack = new Array(stack.length)
+-  var n = stack[stack.length-1]
+-  cstack[cstack.length-1] = new RBNode(n._color, n.key, n.value, n.left, n.right, n._count)
+-  for(var i=stack.length-2; i>=0; --i) {
+-    var n = stack[i]
+-    if(n.left === stack[i+1]) {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
+-    } else {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++function monochromatic(color, results) {
++    results = results || 6;
++    var hsv = tinycolor(color).toHsv();
++    var h = hsv.h, s = hsv.s, v = hsv.v;
++    var ret = [];
++    var modification = 1 / results;
++
++    while (results--) {
++        ret.push(tinycolor({ h: h, s: s, v: v}));
++        v = (v + modification) % 1;
+     }
+-  }
+ 
+-  //Get node
+-  n = cstack[cstack.length-1]
+-  //console.log("start remove: ", n.value)
++    return ret;
++}
+ 
+-  //If not leaf, then swap with previous node
+-  if(n.left && n.right) {
+-    //console.log("moving to leaf")
++// Utility Functions
++// ---------------------
+ 
+-    //First walk to previous leaf
+-    var split = cstack.length
+-    n = n.left
+-    while(n.right) {
+-      cstack.push(n)
+-      n = n.right
+-    }
+-    //Copy path to leaf
+-    var v = cstack[split-1]
+-    cstack.push(new RBNode(n._color, v.key, v.value, n.left, n.right, n._count))
+-    cstack[split-1].key = n.key
+-    cstack[split-1].value = n.value
++tinycolor.mix = function(color1, color2, amount) {
++    amount = (amount === 0) ? 0 : (amount || 50);
+ 
+-    //Fix up stack
+-    for(var i=cstack.length-2; i>=split; --i) {
+-      n = cstack[i]
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++    var rgb1 = tinycolor(color1).toRgb();
++    var rgb2 = tinycolor(color2).toRgb();
++
++    var p = amount / 100;
++
++    var rgba = {
++        r: ((rgb2.r - rgb1.r) * p) + rgb1.r,
++        g: ((rgb2.g - rgb1.g) * p) + rgb1.g,
++        b: ((rgb2.b - rgb1.b) * p) + rgb1.b,
++        a: ((rgb2.a - rgb1.a) * p) + rgb1.a
++    };
++
++    return tinycolor(rgba);
++};
++
++
++// Readability Functions
++// ---------------------
++// <http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef (WCAG Version 2)
++
++// `contrast`
++// Analyze the 2 colors and returns the color contrast defined by (WCAG Version 2)
++tinycolor.readability = function(color1, color2) {
++    var c1 = tinycolor(color1);
++    var c2 = tinycolor(color2);
++    return (Math.max(c1.getLuminance(),c2.getLuminance())+0.05) / (Math.min(c1.getLuminance(),c2.getLuminance())+0.05);
++};
++
++// `isReadable`
++// Ensure that foreground and background color combinations meet WCAG2 guidelines.
++// The third argument is an optional Object.
++//      the 'level' property states 'AA' or 'AAA' - if missing or invalid, it defaults to 'AA';
++//      the 'size' property states 'large' or 'small' - if missing or invalid, it defaults to 'small'.
++// If the entire object is absent, isReadable defaults to {level:"AA",size:"small"}.
++
++// *Example*
++//    tinycolor.isReadable("#000", "#111") => false
++//    tinycolor.isReadable("#000", "#111",{level:"AA",size:"large"}) => false
++tinycolor.isReadable = function(color1, color2, wcag2) {
++    var readability = tinycolor.readability(color1, color2);
++    var wcag2Parms, out;
++
++    out = false;
++
++    wcag2Parms = validateWCAG2Parms(wcag2);
++    switch (wcag2Parms.level + wcag2Parms.size) {
++        case "AAsmall":
++        case "AAAlarge":
++            out = readability >= 4.5;
++            break;
++        case "AAlarge":
++            out = readability >= 3;
++            break;
++        case "AAAsmall":
++            out = readability >= 7;
++            break;
+     }
+-    cstack[split-1].left = cstack[split]
+-  }
+-  //console.log("stack=", cstack.map(function(v) { return v.value }))
++    return out;
+ 
+-  //Remove leaf node
+-  n = cstack[cstack.length-1]
+-  if(n._color === RED) {
+-    //Easy case: removing red leaf
+-    //console.log("RED leaf")
+-    var p = cstack[cstack.length-2]
+-    if(p.left === n) {
+-      p.left = null
+-    } else if(p.right === n) {
+-      p.right = null
++};
++
++// `mostReadable`
++// Given a base color and a list of possible foreground or background
++// colors for that base, returns the most readable color.
++// Optionally returns Black or White if the most readable color is unreadable.
++// *Example*
++//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:false}).toHexString(); // "#112255"
++//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:true}).toHexString();  // "#ffffff"
++//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"large"}).toHexString(); // "#faf3f3"
++//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"small"}).toHexString(); // "#ffffff"
++tinycolor.mostReadable = function(baseColor, colorList, args) {
++    var bestColor = null;
++    var bestScore = 0;
++    var readability;
++    var includeFallbackColors, level, size ;
++    args = args || {};
++    includeFallbackColors = args.includeFallbackColors ;
++    level = args.level;
++    size = args.size;
++
++    for (var i= 0; i < colorList.length ; i++) {
++        readability = tinycolor.readability(baseColor, colorList[i]);
++        if (readability > bestScore) {
++            bestScore = readability;
++            bestColor = tinycolor(colorList[i]);
++        }
+     }
+-    cstack.pop()
+-    for(var i=0; i<cstack.length; ++i) {
+-      cstack[i]._count--
++
++    if (tinycolor.isReadable(baseColor, bestColor, {"level":level,"size":size}) || !includeFallbackColors) {
++        return bestColor;
+     }
+-    return new RedBlackTree(this.tree._compare, cstack[0])
+-  } else {
+-    if(n.left || n.right) {
+-      //Second easy case:  Single child black parent
+-      //console.log("BLACK single child")
+-      if(n.left) {
+-        swapNode(n, n.left)
+-      } else if(n.right) {
+-        swapNode(n, n.right)
+-      }
+-      //Child must be red, so repaint it black to balance color
+-      n._color = BLACK
+-      for(var i=0; i<cstack.length-1; ++i) {
+-        cstack[i]._count--
+-      }
+-      return new RedBlackTree(this.tree._compare, cstack[0])
+-    } else if(cstack.length === 1) {
+-      //Third easy case: root
+-      //console.log("ROOT")
+-      return new RedBlackTree(this.tree._compare, null)
+-    } else {
+-      //Hard case: Repaint n, and then do some nasty stuff
+-      //console.log("BLACK leaf no children")
+-      for(var i=0; i<cstack.length; ++i) {
+-        cstack[i]._count--
+-      }
+-      var parent = cstack[cstack.length-2]
+-      fixDoubleBlack(cstack)
+-      //Fix up links
+-      if(parent.left === n) {
+-        parent.left = null
+-      } else {
+-        parent.right = null
+-      }
++    else {
++        args.includeFallbackColors=false;
++        return tinycolor.mostReadable(baseColor,["#fff", "#000"],args);
+     }
+-  }
+-  return new RedBlackTree(this.tree._compare, cstack[0])
+-}
++};
+ 
+-//Returns key
+-Object.defineProperty(iproto, "key", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1].key
+-    }
+-    return
+-  },
+-  enumerable: true
+-})
+ 
+-//Returns value
+-Object.defineProperty(iproto, "value", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1].value
+-    }
+-    return
+-  },
+-  enumerable: true
+-})
++// Big List of Colors
++// ------------------
++// <http://www.w3.org/TR/css3-color/#svg-color>
++var names = tinycolor.names = {
++    aliceblue: "f0f8ff",
++    antiquewhite: "faebd7",
++    aqua: "0ff",
++    aquamarine: "7fffd4",
++    azure: "f0ffff",
++    beige: "f5f5dc",
++    bisque: "ffe4c4",
++    black: "000",
++    blanchedalmond: "ffebcd",
++    blue: "00f",
++    blueviolet: "8a2be2",
++    brown: "a52a2a",
++    burlywood: "deb887",
++    burntsienna: "ea7e5d",
++    cadetblue: "5f9ea0",
++    chartreuse: "7fff00",
++    chocolate: "d2691e",
++    coral: "ff7f50",
++    cornflowerblue: "6495ed",
++    cornsilk: "fff8dc",
++    crimson: "dc143c",
++    cyan: "0ff",
++    darkblue: "00008b",
++    darkcyan: "008b8b",
++    darkgoldenrod: "b8860b",
++    darkgray: "a9a9a9",
++    darkgreen: "006400",
++    darkgrey: "a9a9a9",
++    darkkhaki: "bdb76b",
++    darkmagenta: "8b008b",
++    darkolivegreen: "556b2f",
++    darkorange: "ff8c00",
++    darkorchid: "9932cc",
++    darkred: "8b0000",
++    darksalmon: "e9967a",
++    darkseagreen: "8fbc8f",
++    darkslateblue: "483d8b",
++    darkslategray: "2f4f4f",
++    darkslategrey: "2f4f4f",
++    darkturquoise: "00ced1",
++    darkviolet: "9400d3",
++    deeppink: "ff1493",
++    deepskyblue: "00bfff",
++    dimgray: "696969",
++    dimgrey: "696969",
++    dodgerblue: "1e90ff",
++    firebrick: "b22222",
++    floralwhite: "fffaf0",
++    forestgreen: "228b22",
++    fuchsia: "f0f",
++    gainsboro: "dcdcdc",
++    ghostwhite: "f8f8ff",
++    gold: "ffd700",
++    goldenrod: "daa520",
++    gray: "808080",
++    green: "008000",
++    greenyellow: "adff2f",
++    grey: "808080",
++    honeydew: "f0fff0",
++    hotpink: "ff69b4",
++    indianred: "cd5c5c",
++    indigo: "4b0082",
++    ivory: "fffff0",
++    khaki: "f0e68c",
++    lavender: "e6e6fa",
++    lavenderblush: "fff0f5",
++    lawngreen: "7cfc00",
++    lemonchiffon: "fffacd",
++    lightblue: "add8e6",
++    lightcoral: "f08080",
++    lightcyan: "e0ffff",
++    lightgoldenrodyellow: "fafad2",
++    lightgray: "d3d3d3",
++    lightgreen: "90ee90",
++    lightgrey: "d3d3d3",
++    lightpink: "ffb6c1",
++    lightsalmon: "ffa07a",
++    lightseagreen: "20b2aa",
++    lightskyblue: "87cefa",
++    lightslategray: "789",
++    lightslategrey: "789",
++    lightsteelblue: "b0c4de",
++    lightyellow: "ffffe0",
++    lime: "0f0",
++    limegreen: "32cd32",
++    linen: "faf0e6",
++    magenta: "f0f",
++    maroon: "800000",
++    mediumaquamarine: "66cdaa",
++    mediumblue: "0000cd",
++    mediumorchid: "ba55d3",
++    mediumpurple: "9370db",
++    mediumseagreen: "3cb371",
++    mediumslateblue: "7b68ee",
++    mediumspringgreen: "00fa9a",
++    mediumturquoise: "48d1cc",
++    mediumvioletred: "c71585",
++    midnightblue: "191970",
++    mintcream: "f5fffa",
++    mistyrose: "ffe4e1",
++    moccasin: "ffe4b5",
++    navajowhite: "ffdead",
++    navy: "000080",
++    oldlace: "fdf5e6",
++    olive: "808000",
++    olivedrab: "6b8e23",
++    orange: "ffa500",
++    orangered: "ff4500",
++    orchid: "da70d6",
++    palegoldenrod: "eee8aa",
++    palegreen: "98fb98",
++    paleturquoise: "afeeee",
++    palevioletred: "db7093",
++    papayawhip: "ffefd5",
++    peachpuff: "ffdab9",
++    peru: "cd853f",
++    pink: "ffc0cb",
++    plum: "dda0dd",
++    powderblue: "b0e0e6",
++    purple: "800080",
++    rebeccapurple: "663399",
++    red: "f00",
++    rosybrown: "bc8f8f",
++    royalblue: "4169e1",
++    saddlebrown: "8b4513",
++    salmon: "fa8072",
++    sandybrown: "f4a460",
++    seagreen: "2e8b57",
++    seashell: "fff5ee",
++    sienna: "a0522d",
++    silver: "c0c0c0",
++    skyblue: "87ceeb",
++    slateblue: "6a5acd",
++    slategray: "708090",
++    slategrey: "708090",
++    snow: "fffafa",
++    springgreen: "00ff7f",
++    steelblue: "4682b4",
++    tan: "d2b48c",
++    teal: "008080",
++    thistle: "d8bfd8",
++    tomato: "ff6347",
++    turquoise: "40e0d0",
++    violet: "ee82ee",
++    wheat: "f5deb3",
++    white: "fff",
++    whitesmoke: "f5f5f5",
++    yellow: "ff0",
++    yellowgreen: "9acd32"
++};
+ 
++// Make it easy to access colors via `hexNames[hex]`
++var hexNames = tinycolor.hexNames = flip(names);
+ 
+-//Returns the position of this iterator in the sorted list
+-Object.defineProperty(iproto, "index", {
+-  get: function() {
+-    var idx = 0
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      var r = this.tree.root
+-      if(r) {
+-        return r._count
+-      }
+-      return 0
+-    } else if(stack[stack.length-1].left) {
+-      idx = stack[stack.length-1].left._count
+-    }
+-    for(var s=stack.length-2; s>=0; --s) {
+-      if(stack[s+1] === stack[s].right) {
+-        ++idx
+-        if(stack[s].left) {
+-          idx += stack[s].left._count
++
++// Utilities
++// ---------
++
++// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
++function flip(o) {
++    var flipped = { };
++    for (var i in o) {
++        if (o.hasOwnProperty(i)) {
++            flipped[o[i]] = i;
+         }
+-      }
+     }
+-    return idx
+-  },
+-  enumerable: true
+-})
++    return flipped;
++}
+ 
+-//Advances iterator to next element in list
+-iproto.next = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return
+-  }
+-  var n = stack[stack.length-1]
+-  if(n.right) {
+-    n = n.right
+-    while(n) {
+-      stack.push(n)
+-      n = n.left
+-    }
+-  } else {
+-    stack.pop()
+-    while(stack.length > 0 && stack[stack.length-1].right === n) {
+-      n = stack[stack.length-1]
+-      stack.pop()
++// Return a valid alpha value [0,1] with all invalid values being set to 1
++function boundAlpha(a) {
++    a = parseFloat(a);
++
++    if (isNaN(a) || a < 0 || a > 1) {
++        a = 1;
+     }
+-  }
++
++    return a;
+ }
+ 
+-//Checks if iterator is at end of tree
+-Object.defineProperty(iproto, "hasNext", {
+-  get: function() {
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      return false
+-    }
+-    if(stack[stack.length-1].right) {
+-      return true
+-    }
+-    for(var s=stack.length-1; s>0; --s) {
+-      if(stack[s-1].left === stack[s]) {
+-        return true
+-      }
++// Take input from [0, n] and return it as [0, 1]
++function bound01(n, max) {
++    if (isOnePointZero(n)) { n = "100%"; }
++
++    var processPercent = isPercentage(n);
++    n = mathMin(max, mathMax(0, parseFloat(n)));
++
++    // Automatically convert percentage into number
++    if (processPercent) {
++        n = parseInt(n * max, 10) / 100;
+     }
+-    return false
+-  }
+-})
+ 
+-//Update value
+-iproto.update = function(value) {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    throw new Error("Can't update empty node!")
+-  }
+-  var cstack = new Array(stack.length)
+-  var n = stack[stack.length-1]
+-  cstack[cstack.length-1] = new RBNode(n._color, n.key, value, n.left, n.right, n._count)
+-  for(var i=stack.length-2; i>=0; --i) {
+-    n = stack[i]
+-    if(n.left === stack[i+1]) {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
+-    } else {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++    // Handle floating point rounding errors
++    if ((Math.abs(n - max) < 0.000001)) {
++        return 1;
+     }
+-  }
+-  return new RedBlackTree(this.tree._compare, cstack[0])
++
++    // Convert into [0, 1] range if it isn't already
++    return (n % max) / parseFloat(max);
+ }
+ 
+-//Moves iterator backward one element
+-iproto.prev = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return
+-  }
+-  var n = stack[stack.length-1]
+-  if(n.left) {
+-    n = n.left
+-    while(n) {
+-      stack.push(n)
+-      n = n.right
+-    }
+-  } else {
+-    stack.pop()
+-    while(stack.length > 0 && stack[stack.length-1].left === n) {
+-      n = stack[stack.length-1]
+-      stack.pop()
+-    }
+-  }
++// Force a number between 0 and 1
++function clamp01(val) {
++    return mathMin(1, mathMax(0, val));
+ }
+ 
+-//Checks if iterator is at start of tree
+-Object.defineProperty(iproto, "hasPrev", {
+-  get: function() {
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      return false
+-    }
+-    if(stack[stack.length-1].left) {
+-      return true
+-    }
+-    for(var s=stack.length-1; s>0; --s) {
+-      if(stack[s-1].right === stack[s]) {
+-        return true
+-      }
+-    }
+-    return false
+-  }
+-})
++// Parse a base-16 hex value into a base-10 integer
++function parseIntFromHex(val) {
++    return parseInt(val, 16);
++}
+ 
+-//Default comparison function
+-function defaultCompare(a, b) {
+-  if(a < b) {
+-    return -1
+-  }
+-  if(a > b) {
+-    return 1
+-  }
+-  return 0
++// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
++// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
++function isOnePointZero(n) {
++    return typeof n == "string" && n.indexOf('.') != -1 && parseFloat(n) === 1;
+ }
+ 
+-//Build a tree
+-function createRBTree(compare) {
+-  return new RedBlackTree(compare || defaultCompare, null)
++// Check to see if string passed in is a percentage
++function isPercentage(n) {
++    return typeof n === "string" && n.indexOf('%') != -1;
+ }
+-},{}],165:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = createSlabDecomposition
++// Force a hex value to have 2 characters
++function pad2(c) {
++    return c.length == 1 ? '0' + c : '' + c;
++}
+ 
+-var bounds = require("binary-search-bounds")
+-var createRBTree = require("functional-red-black-tree")
+-var orient = require("robust-orientation")
+-var orderSegments = require("./lib/order-segments")
++// Replace a decimal with it's percentage value
++function convertToPercentage(n) {
++    if (n <= 1) {
++        n = (n * 100) + "%";
++    }
+ 
+-function SlabDecomposition(slabs, coordinates, horizontal) {
+-  this.slabs = slabs
+-  this.coordinates = coordinates
+-  this.horizontal = horizontal
++    return n;
+ }
+ 
+-var proto = SlabDecomposition.prototype
++// Converts a decimal to a hex value
++function convertDecimalToHex(d) {
++    return Math.round(parseFloat(d) * 255).toString(16);
++}
++// Converts a hex value to a decimal
++function convertHexToDecimal(h) {
++    return (parseIntFromHex(h) / 255);
++}
+ 
+-function compareHorizontal(e, y) {
+-  return e.y - y
++var matchers = (function() {
++
++    // <http://www.w3.org/TR/css3-values/#integers>
++    var CSS_INTEGER = "[-\\+]?\\d+%?";
++
++    // <http://www.w3.org/TR/css3-values/#number-value>
++    var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";
++
++    // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
++    var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";
++
++    // Actual matching.
++    // Parentheses and commas are optional, but not required.
++    // Whitespace can take the place of commas or opening paren
++    var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
++    var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
++
++    return {
++        CSS_UNIT: new RegExp(CSS_UNIT),
++        rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
++        rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
++        hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
++        hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
++        hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
++        hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
++        hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
++        hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
++        hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
++        hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
++    };
++})();
++
++// `isValidCSSUnit`
++// Take in a single string / number and check to see if it looks like a CSS unit
++// (see `matchers` above for definition).
++function isValidCSSUnit(color) {
++    return !!matchers.CSS_UNIT.exec(color);
+ }
+ 
+-function searchBucket(root, p) {
+-  var lastNode = null
+-  while(root) {
+-    var seg = root.key
+-    var l, r
+-    if(seg[0][0] < seg[1][0]) {
+-      l = seg[0]
+-      r = seg[1]
+-    } else {
+-      l = seg[1]
+-      r = seg[0]
++// `stringInputToObject`
++// Permissive string parsing.  Take in a number of formats, and output an object
++// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
++function stringInputToObject(color) {
++
++    color = color.replace(trimLeft,'').replace(trimRight, '').toLowerCase();
++    var named = false;
++    if (names[color]) {
++        color = names[color];
++        named = true;
+     }
+-    var o = orient(l, r, p)
+-    if(o < 0) {
+-      root = root.left
+-    } else if(o > 0) {
+-      if(p[0] !== seg[1][0]) {
+-        lastNode = root
+-        root = root.right
+-      } else {
+-        var val = searchBucket(root.right, p)
+-        if(val) {
+-          return val
+-        }
+-        root = root.left
+-      }
+-    } else {
+-      if(p[0] !== seg[1][0]) {
+-        return root
+-      } else {
+-        var val = searchBucket(root.right, p)
+-        if(val) {
+-          return val
+-        }
+-        root = root.left
+-      }
++    else if (color == 'transparent') {
++        return { r: 0, g: 0, b: 0, a: 0, format: "name" };
+     }
+-  }
+-  return lastNode
+-}
+ 
+-proto.castUp = function(p) {
+-  var bucket = bounds.le(this.coordinates, p[0])
+-  if(bucket < 0) {
+-    return -1
+-  }
+-  var root = this.slabs[bucket]
+-  var hitNode = searchBucket(this.slabs[bucket], p)
+-  var lastHit = -1
+-  if(hitNode) {
+-    lastHit = hitNode.value
+-  }
+-  //Edge case: need to handle horizontal segments (sucks)
+-  if(this.coordinates[bucket] === p[0]) {
+-    var lastSegment = null
+-    if(hitNode) {
+-      lastSegment = hitNode.key
++    // Try to match string input using regular expressions.
++    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
++    // Just return an object and let the conversion functions handle that.
++    // This way the result will be the same whether the tinycolor is initialized with string or object.
++    var match;
++    if ((match = matchers.rgb.exec(color))) {
++        return { r: match[1], g: match[2], b: match[3] };
+     }
+-    if(bucket > 0) {
+-      var otherHitNode = searchBucket(this.slabs[bucket-1], p)
+-      if(otherHitNode) {
+-        if(lastSegment) {
+-          if(orderSegments(otherHitNode.key, lastSegment) > 0) {
+-            lastSegment = otherHitNode.key
+-            lastHit = otherHitNode.value
+-          }
+-        } else {
+-          lastHit = otherHitNode.value
+-          lastSegment = otherHitNode.key
+-        }
+-      }
++    if ((match = matchers.rgba.exec(color))) {
++        return { r: match[1], g: match[2], b: match[3], a: match[4] };
+     }
+-    var horiz = this.horizontal[bucket]
+-    if(horiz.length > 0) {
+-      var hbucket = bounds.ge(horiz, p[1], compareHorizontal)
+-      if(hbucket < horiz.length) {
+-        var e = horiz[hbucket]
+-        if(p[1] === e.y) {
+-          if(e.closed) {
+-            return e.index
+-          } else {
+-            while(hbucket < horiz.length-1 && horiz[hbucket+1].y === p[1]) {
+-              hbucket = hbucket+1
+-              e = horiz[hbucket]
+-              if(e.closed) {
+-                return e.index
+-              }
+-            }
+-            if(e.y === p[1] && !e.start) {
+-              hbucket = hbucket+1
+-              if(hbucket >= horiz.length) {
+-                return lastHit
+-              }
+-              e = horiz[hbucket]
+-            }
+-          }
+-        }
+-        //Check if e is above/below last segment
+-        if(e.start) {
+-          if(lastSegment) {
+-            var o = orient(lastSegment[0], lastSegment[1], [p[0], e.y])
+-            if(lastSegment[0][0] > lastSegment[1][0]) {
+-              o = -o
+-            }
+-            if(o > 0) {
+-              lastHit = e.index
+-            }
+-          } else {
+-            lastHit = e.index
+-          }
+-        } else if(e.y !== p[1]) {
+-          lastHit = e.index
+-        }
+-      }
++    if ((match = matchers.hsl.exec(color))) {
++        return { h: match[1], s: match[2], l: match[3] };
+     }
+-  }
+-  return lastHit
++    if ((match = matchers.hsla.exec(color))) {
++        return { h: match[1], s: match[2], l: match[3], a: match[4] };
++    }
++    if ((match = matchers.hsv.exec(color))) {
++        return { h: match[1], s: match[2], v: match[3] };
++    }
++    if ((match = matchers.hsva.exec(color))) {
++        return { h: match[1], s: match[2], v: match[3], a: match[4] };
++    }
++    if ((match = matchers.hex8.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1]),
++            g: parseIntFromHex(match[2]),
++            b: parseIntFromHex(match[3]),
++            a: convertHexToDecimal(match[4]),
++            format: named ? "name" : "hex8"
++        };
++    }
++    if ((match = matchers.hex6.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1]),
++            g: parseIntFromHex(match[2]),
++            b: parseIntFromHex(match[3]),
++            format: named ? "name" : "hex"
++        };
++    }
++    if ((match = matchers.hex4.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1] + '' + match[1]),
++            g: parseIntFromHex(match[2] + '' + match[2]),
++            b: parseIntFromHex(match[3] + '' + match[3]),
++            a: convertHexToDecimal(match[4] + '' + match[4]),
++            format: named ? "name" : "hex8"
++        };
++    }
++    if ((match = matchers.hex3.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1] + '' + match[1]),
++            g: parseIntFromHex(match[2] + '' + match[2]),
++            b: parseIntFromHex(match[3] + '' + match[3]),
++            format: named ? "name" : "hex"
++        };
++    }
++
++    return false;
+ }
+ 
+-function IntervalSegment(y, index, start, closed) {
+-  this.y = y
+-  this.index = index
+-  this.start = start
+-  this.closed = closed
++function validateWCAG2Parms(parms) {
++    // return valid WCAG2 parms for isReadable.
++    // If input parms are invalid, return {"level":"AA", "size":"small"}
++    var level, size;
++    parms = parms || {"level":"AA", "size":"small"};
++    level = (parms.level || "AA").toUpperCase();
++    size = (parms.size || "small").toLowerCase();
++    if (level !== "AA" && level !== "AAA") {
++        level = "AA";
++    }
++    if (size !== "small" && size !== "large") {
++        size = "small";
++    }
++    return {"level":level, "size":size};
+ }
+ 
+-function Event(x, segment, create, index) {
+-  this.x = x
+-  this.segment = segment
+-  this.create = create
+-  this.index = index
++// Node: Export function
++if (typeof module !== "undefined" && module.exports) {
++    module.exports = tinycolor;
++}
++// AMD/requirejs: Define the module
++else if (typeof define === 'function' && define.amd) {
++    define(function () {return tinycolor;});
++}
++// Browser: Expose to window
++else {
++    window.tinycolor = tinycolor;
+ }
+ 
++})(Math);
+ 
+-function createSlabDecomposition(segments) {
+-  var numSegments = segments.length
+-  var numEvents = 2 * numSegments
+-  var events = new Array(numEvents)
+-  for(var i=0; i<numSegments; ++i) {
+-    var s = segments[i]
+-    var f = s[0][0] < s[1][0]
+-    events[2*i] = new Event(s[0][0], s, f, i)
+-    events[2*i+1] = new Event(s[1][0], s, !f, i)
+-  }
+-  events.sort(function(a,b) {
+-    var d = a.x - b.x
+-    if(d) {
+-      return d
+-    }
+-    d = a.create - b.create
+-    if(d) {
+-      return d
+-    }
+-    return Math.min(a.segment[0][1], a.segment[1][1]) - Math.min(b.segment[0][1], b.segment[1][1])
+-  })
+-  var tree = createRBTree(orderSegments)
+-  var slabs = []
+-  var lines = []
+-  var horizontal = []
+-  var lastX = -Infinity
+-  for(var i=0; i<numEvents; ) {
+-    var x = events[i].x
+-    var horiz = []
+-    while(i < numEvents) {
+-      var e = events[i]
+-      if(e.x !== x) {
+-        break
+-      }
+-      i += 1
+-      if(e.segment[0][0] === e.x && e.segment[1][0] === e.x) {
+-        if(e.create) {
+-          if(e.segment[0][1] < e.segment[1][1]) {
+-            horiz.push(new IntervalSegment(
+-                e.segment[0][1],
+-                e.index,
+-                true,
+-                true))
+-            horiz.push(new IntervalSegment(
+-                e.segment[1][1],
+-                e.index,
+-                false,
+-                false))
+-          } else {
+-            horiz.push(new IntervalSegment(
+-                e.segment[1][1],
+-                e.index,
+-                true,
+-                false))
+-            horiz.push(new IntervalSegment(
+-                e.segment[0][1],
+-                e.index,
+-                false,
+-                true))
+-          }
+-        }
+-      } else {
+-        if(e.create) {
+-          tree = tree.insert(e.segment, e.index)
+-        } else {
+-          tree = tree.remove(e.segment)
+-        }
+-      }
+-    }
+-    slabs.push(tree.root)
+-    lines.push(x)
+-    horizontal.push(horiz)
+-  }
+-  return new SlabDecomposition(slabs, lines, horizontal)
+-}
+-},{"./lib/order-segments":163,"binary-search-bounds":161,"functional-red-black-tree":164,"robust-orientation":133}],166:[function(require,module,exports){
+-module.exports = preprocessPolygon
++},{}],158:[function(require,module,exports){
++'use strict'
+ 
+-var orient = require('robust-orientation')[3]
+-var makeSlabs = require('slab-decomposition')
+-var makeIntervalTree = require('interval-tree-1d')
+-var bsearch = require('binary-search-bounds')
++var parseUnit = require('parse-unit')
+ 
+-function visitInterval() {
+-  return true
++module.exports = toPX
++
++var PIXELS_PER_INCH = 96
++
++function getPropertyInPX(element, prop) {
++  var parts = parseUnit(getComputedStyle(element).getPropertyValue(prop))
++  return parts[0] * toPX(parts[1], element)
+ }
+ 
+-function intervalSearch(table) {
+-  return function(x, y) {
+-    var tree = table[x]
+-    if(tree) {
+-      return !!tree.queryPoint(y, visitInterval)
+-    }
+-    return false
+-  }
++//This brutal hack is needed
++function getSizeBrutal(unit, element) {
++  var testDIV = document.createElement('div')
++  testDIV.style['font-size'] = '128' + unit
++  element.appendChild(testDIV)
++  var size = getPropertyInPX(testDIV, 'font-size') / 128
++  element.removeChild(testDIV)
++  return size
+ }
+ 
+-function buildVerticalIndex(segments) {
+-  var table = {}
+-  for(var i=0; i<segments.length; ++i) {
+-    var s = segments[i]
+-    var x = s[0][0]
+-    var y0 = s[0][1]
+-    var y1 = s[1][1]
+-    var p = [ Math.min(y0, y1), Math.max(y0, y1) ]
+-    if(x in table) {
+-      table[x].push(p)
+-    } else {
+-      table[x] = [ p ]
+-    }
++function toPX(str, element) {
++  element = element || document.body
++  str = (str || 'px').trim().toLowerCase()
++  if(element === window || element === document) {
++    element = document.body 
+   }
+-  var intervalTable = {}
+-  var keys = Object.keys(table)
+-  for(var i=0; i<keys.length; ++i) {
+-    var segs = table[keys[i]]
+-    intervalTable[keys[i]] = makeIntervalTree(segs)
++  switch(str) {
++    case '%':  //Ambiguous, not sure if we should use width or height
++      return element.clientHeight / 100.0
++    case 'ch':
++    case 'ex':
++      return getSizeBrutal(str, element)
++    case 'em':
++      return getPropertyInPX(element, 'font-size')
++    case 'rem':
++      return getPropertyInPX(document.body, 'font-size')
++    case 'vw':
++      return window.innerWidth/100
++    case 'vh':
++      return window.innerHeight/100
++    case 'vmin':
++      return Math.min(window.innerWidth, window.innerHeight) / 100
++    case 'vmax':
++      return Math.max(window.innerWidth, window.innerHeight) / 100
++    case 'in':
++      return PIXELS_PER_INCH
++    case 'cm':
++      return PIXELS_PER_INCH / 2.54
++    case 'mm':
++      return PIXELS_PER_INCH / 25.4
++    case 'pt':
++      return PIXELS_PER_INCH / 72
++    case 'pc':
++      return PIXELS_PER_INCH / 6
+   }
+-  return intervalSearch(intervalTable)
++  return 1
+ }
++},{"parse-unit":126}],159:[function(require,module,exports){
++"use strict"
+ 
+-function buildSlabSearch(slabs, coordinates) {
+-  return function(p) {
+-    var bucket = bsearch.le(coordinates, p[0])
+-    if(bucket < 0) {
+-      return 1
+-    }
+-    var root = slabs[bucket]
+-    if(!root) {
+-      if(bucket > 0 && coordinates[bucket] === p[0]) {
+-        root = slabs[bucket-1]
+-      } else {
+-        return 1
+-      }
++module.exports = triangulateCube
++
++var perm = require("permutation-rank")
++var sgn = require("permutation-parity")
++var gamma = require("gamma")
++
++function triangulateCube(dimension) {
++  if(dimension < 0) {
++    return [ ]
++  }
++  if(dimension === 0) {
++    return [ [0] ]
++  }
++  var dfactorial = Math.round(gamma(dimension+1))|0
++  var result = []
++  for(var i=0; i<dfactorial; ++i) {
++    var p = perm.unrank(dimension, i)
++    var cell = [ 0 ]
++    var v = 0
++    for(var j=0; j<p.length; ++j) {
++      v += (1<<p[j])
++      cell.push(v)
+     }
+-    var lastOrientation = 1
+-    while(root) {
+-      var s = root.key
+-      var o = orient(p, s[0], s[1])
+-      if(s[0][0] < s[1][0]) {
+-        if(o < 0) {
+-          root = root.left
+-        } else if(o > 0) {
+-          lastOrientation = -1
+-          root = root.right
+-        } else {
+-          return 0
+-        }
+-      } else {
+-        if(o > 0) {
+-          root = root.left
+-        } else if(o < 0) {
+-          lastOrientation = 1
+-          root = root.right
+-        } else {
+-          return 0
+-        }
+-      }
++    if(sgn(p) < 1) {
++      cell[0] = v
++      cell[dimension] = 0
+     }
+-    return lastOrientation
++    result.push(cell)
+   }
++  return result
+ }
++},{"gamma":62,"permutation-parity":127,"permutation-rank":128}],160:[function(require,module,exports){
++"use strict"
+ 
+-function classifyEmpty(p) {
+-  return 1
+-}
++module.exports = twoProduct
+ 
+-function createClassifyVertical(testVertical) {
+-  return function classify(p) {
+-    if(testVertical(p[0], p[1])) {
+-      return 0
+-    }
+-    return 1
++var SPLITTER = +(Math.pow(2, 27) + 1.0)
++
++function twoProduct(a, b, result) {
++  var x = a * b
++
++  var c = SPLITTER * a
++  var abig = c - a
++  var ahi = c - abig
++  var alo = a - ahi
++
++  var d = SPLITTER * b
++  var bbig = d - b
++  var bhi = d - bbig
++  var blo = b - bhi
++
++  var err1 = x - (ahi * bhi)
++  var err2 = err1 - (alo * bhi)
++  var err3 = err2 - (ahi * blo)
++
++  var y = alo * blo - err3
++
++  if(result) {
++    result[0] = y
++    result[1] = x
++    return result
+   }
++
++  return [ y, x ]
+ }
++},{}],161:[function(require,module,exports){
++"use strict"
+ 
+-function createClassifyPointDegen(testVertical, testNormal) {
+-  return function classify(p) {
+-    if(testVertical(p[0], p[1])) {
+-      return 0
+-    }
+-    return testNormal(p)
+-  }
++module.exports = fastTwoSum
++
++function fastTwoSum(a, b, result) {
++	var x = a + b
++	var bv = x - a
++	var av = x - bv
++	var br = b - bv
++	var ar = a - av
++	if(result) {
++		result[0] = ar + br
++		result[1] = x
++		return result
++	}
++	return [ar+br, x]
+ }
++},{}],162:[function(require,module,exports){
++(function (global,Buffer){
++'use strict'
+ 
+-function preprocessPolygon(loops) {
+-  //Compute number of loops
+-  var numLoops = loops.length
++var bits = require('bit-twiddle')
++var dup = require('dup')
+ 
+-  //Unpack segments
+-  var segments = []
+-  var vsegments = []
+-  var ptr = 0
+-  for(var i=0; i<numLoops; ++i) {
+-    var loop = loops[i]
+-    var numVertices = loop.length
+-    for(var s=numVertices-1,t=0; t<numVertices; s=(t++)) {
+-      var a = loop[s]
+-      var b = loop[t]
+-      if(a[0] === b[0]) {
+-        vsegments.push([a,b])
+-      } else {
+-        segments.push([a,b])
+-      }
+-    }
++//Legacy pool support
++if(!global.__TYPEDARRAY_POOL) {
++  global.__TYPEDARRAY_POOL = {
++      UINT8   : dup([32, 0])
++    , UINT16  : dup([32, 0])
++    , UINT32  : dup([32, 0])
++    , INT8    : dup([32, 0])
++    , INT16   : dup([32, 0])
++    , INT32   : dup([32, 0])
++    , FLOAT   : dup([32, 0])
++    , DOUBLE  : dup([32, 0])
++    , DATA    : dup([32, 0])
++    , UINT8C  : dup([32, 0])
++    , BUFFER  : dup([32, 0])
+   }
++}
+ 
+-  //Degenerate case: All loops are empty
+-  if(segments.length === 0) {
+-    if(vsegments.length === 0) {
+-      return classifyEmpty
+-    } else {
+-      return createClassifyVertical(buildVerticalIndex(vsegments))
+-    }
+-  }
++var hasUint8C = (typeof Uint8ClampedArray) !== 'undefined'
++var POOL = global.__TYPEDARRAY_POOL
+ 
+-  //Build slab decomposition
+-  var slabs = makeSlabs(segments)
+-  var testSlab = buildSlabSearch(slabs.slabs, slabs.coordinates)
++//Upgrade pool
++if(!POOL.UINT8C) {
++  POOL.UINT8C = dup([32, 0])
++}
++if(!POOL.BUFFER) {
++  POOL.BUFFER = dup([32, 0])
++}
+ 
+-  if(vsegments.length === 0) {
+-    return testSlab
++//New technique: Only allocate from ArrayBufferView and Buffer
++var DATA    = POOL.DATA
++  , BUFFER  = POOL.BUFFER
++
++exports.free = function free(array) {
++  if(Buffer.isBuffer(array)) {
++    BUFFER[bits.log2(array.length)].push(array)
+   } else {
+-    return createClassifyPointDegen(
+-      buildVerticalIndex(vsegments),
+-      testSlab)
++    if(Object.prototype.toString.call(array) !== '[object ArrayBuffer]') {
++      array = array.buffer
++    }
++    if(!array) {
++      return
++    }
++    var n = array.length || array.byteLength
++    var log_n = bits.log2(n)|0
++    DATA[log_n].push(array)
+   }
+ }
+-},{"binary-search-bounds":161,"interval-tree-1d":162,"robust-orientation":133,"slab-decomposition":165}],167:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = planarGraphToPolyline
+-
+-var e2a = require('edges-to-adjacency-list')
+-var planarDual = require('planar-dual')
+-var preprocessPolygon = require('point-in-big-polygon')
+-var twoProduct = require('two-product')
+-var robustSum = require('robust-sum')
+-var uniq = require('uniq')
+-var trimLeaves = require('./lib/trim-leaves')
+ 
+-function makeArray(length, fill) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = fill
++function freeArrayBuffer(buffer) {
++  if(!buffer) {
++    return
+   }
+-  return result
++  var n = buffer.length || buffer.byteLength
++  var log_n = bits.log2(n)
++  DATA[log_n].push(buffer)
+ }
+ 
+-function makeArrayOfArrays(length) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = []
+-  }
+-  return result
++function freeTypedArray(array) {
++  freeArrayBuffer(array.buffer)
+ }
+ 
++exports.freeUint8 =
++exports.freeUint16 =
++exports.freeUint32 =
++exports.freeInt8 =
++exports.freeInt16 =
++exports.freeInt32 =
++exports.freeFloat32 = 
++exports.freeFloat =
++exports.freeFloat64 = 
++exports.freeDouble = 
++exports.freeUint8Clamped = 
++exports.freeDataView = freeTypedArray
+ 
+-function planarGraphToPolyline(edges, positions) {
++exports.freeArrayBuffer = freeArrayBuffer
+ 
+-  //Trim leaves
+-  var result = trimLeaves(edges, positions)
+-  edges = result[0]
+-  positions = result[1]
++exports.freeBuffer = function freeBuffer(array) {
++  BUFFER[bits.log2(array.length)].push(array)
++}
+ 
+-  var numVertices = positions.length
+-  var numEdges = edges.length
++exports.malloc = function malloc(n, dtype) {
++  if(dtype === undefined || dtype === 'arraybuffer') {
++    return mallocArrayBuffer(n)
++  } else {
++    switch(dtype) {
++      case 'uint8':
++        return mallocUint8(n)
++      case 'uint16':
++        return mallocUint16(n)
++      case 'uint32':
++        return mallocUint32(n)
++      case 'int8':
++        return mallocInt8(n)
++      case 'int16':
++        return mallocInt16(n)
++      case 'int32':
++        return mallocInt32(n)
++      case 'float':
++      case 'float32':
++        return mallocFloat(n)
++      case 'double':
++      case 'float64':
++        return mallocDouble(n)
++      case 'uint8_clamped':
++        return mallocUint8Clamped(n)
++      case 'buffer':
++        return mallocBuffer(n)
++      case 'data':
++      case 'dataview':
++        return mallocDataView(n)
+ 
+-  //Calculate adjacency list, check manifold
+-  var adj = e2a(edges, positions.length)
+-  for(var i=0; i<numVertices; ++i) {
+-    if(adj[i].length % 2 === 1) {
+-      throw new Error('planar-graph-to-polyline: graph must be manifold')
++      default:
++        return null
+     }
+   }
++  return null
++}
+ 
+-  //Get faces
+-  var faces = planarDual(edges, positions)
+-
+-  //Check orientation of a polygon using exact arithmetic
+-  function ccw(c) {
+-    var n = c.length
+-    var area = [0]
+-    for(var j=0; j<n; ++j) {
+-      var a = positions[c[j]]
+-      var b = positions[c[(j+1)%n]]
+-      var t00 = twoProduct(-a[0], a[1])
+-      var t01 = twoProduct(-a[0], b[1])
+-      var t10 = twoProduct( b[0], a[1])
+-      var t11 = twoProduct( b[0], b[1])
+-      area = robustSum(area, robustSum(robustSum(t00, t01), robustSum(t10, t11)))
+-    }
+-    return area[area.length-1] > 0
++function mallocArrayBuffer(n) {
++  var n = bits.nextPow2(n)
++  var log_n = bits.log2(n)
++  var d = DATA[log_n]
++  if(d.length > 0) {
++    return d.pop()
+   }
++  return new ArrayBuffer(n)
++}
++exports.mallocArrayBuffer = mallocArrayBuffer
+ 
+-  //Extract all clockwise faces
+-  faces = faces.filter(ccw)
++function mallocUint8(n) {
++  return new Uint8Array(mallocArrayBuffer(n), 0, n)
++}
++exports.mallocUint8 = mallocUint8
+ 
+-  //Detect which loops are contained in one another to handle parent-of relation
+-  var numFaces = faces.length
+-  var parent = new Array(numFaces)
+-  var containment = new Array(numFaces)
+-  for(var i=0; i<numFaces; ++i) {
+-    parent[i] = i
+-    var row = new Array(numFaces)
+-    var loopVertices = faces[i].map(function(v) {
+-      return positions[v]
+-    })
+-    var pmc = preprocessPolygon([loopVertices])
+-    var count = 0
+-    outer:
+-    for(var j=0; j<numFaces; ++j) {
+-      row[j] = 0
+-      if(i === j) {
+-        continue
+-      }
+-      var c = faces[j]
+-      var n = c.length
+-      for(var k=0; k<n; ++k) {
+-        var d = pmc(positions[c[k]])
+-        if(d !== 0) {
+-          if(d < 0) {
+-            row[j] = 1
+-            count += 1
+-          }
+-          continue outer
+-        }
+-      }
+-      row[j] = 1
+-      count += 1
+-    }
+-    containment[i] = [count, i, row]
+-  }
+-  containment.sort(function(a,b) {
+-    return b[0] - a[0]
+-  })
+-  for(var i=0; i<numFaces; ++i) {
+-    var row = containment[i]
+-    var idx = row[1]
+-    var children = row[2]
+-    for(var j=0; j<numFaces; ++j) {
+-      if(children[j]) {
+-        parent[j] = idx
+-      }
+-    }
+-  }
++function mallocUint16(n) {
++  return new Uint16Array(mallocArrayBuffer(2*n), 0, n)
++}
++exports.mallocUint16 = mallocUint16
+ 
+-  //Initialize face adjacency list
+-  var fadj = makeArrayOfArrays(numFaces)
+-  for(var i=0; i<numFaces; ++i) {
+-    fadj[i].push(parent[i])
+-    fadj[parent[i]].push(i)
+-  }
++function mallocUint32(n) {
++  return new Uint32Array(mallocArrayBuffer(4*n), 0, n)
++}
++exports.mallocUint32 = mallocUint32
+ 
+-  //Build adjacency matrix for edges
+-  var edgeAdjacency = {}
+-  var internalVertices = makeArray(numVertices, false)
+-  for(var i=0; i<numFaces; ++i) {
+-    var c = faces[i]
+-    var n = c.length
+-    for(var j=0; j<n; ++j) {
+-      var a = c[j]
+-      var b = c[(j+1)%n]
+-      var key = Math.min(a,b) + ":" + Math.max(a,b)
+-      if(key in edgeAdjacency) {
+-        var neighbor = edgeAdjacency[key]
+-        fadj[neighbor].push(i)
+-        fadj[i].push(neighbor)
+-        internalVertices[a] = internalVertices[b] = true
+-      } else {
+-        edgeAdjacency[key] = i
+-      }
+-    }
++function mallocInt8(n) {
++  return new Int8Array(mallocArrayBuffer(n), 0, n)
++}
++exports.mallocInt8 = mallocInt8
++
++function mallocInt16(n) {
++  return new Int16Array(mallocArrayBuffer(2*n), 0, n)
++}
++exports.mallocInt16 = mallocInt16
++
++function mallocInt32(n) {
++  return new Int32Array(mallocArrayBuffer(4*n), 0, n)
++}
++exports.mallocInt32 = mallocInt32
++
++function mallocFloat(n) {
++  return new Float32Array(mallocArrayBuffer(4*n), 0, n)
++}
++exports.mallocFloat32 = exports.mallocFloat = mallocFloat
++
++function mallocDouble(n) {
++  return new Float64Array(mallocArrayBuffer(8*n), 0, n)
++}
++exports.mallocFloat64 = exports.mallocDouble = mallocDouble
++
++function mallocUint8Clamped(n) {
++  if(hasUint8C) {
++    return new Uint8ClampedArray(mallocArrayBuffer(n), 0, n)
++  } else {
++    return mallocUint8(n)
+   }
++}
++exports.mallocUint8Clamped = mallocUint8Clamped
+ 
+-  function sharedBoundary(c) {
+-    var n = c.length
+-    for(var i=0; i<n; ++i) {
+-      if(!internalVertices[c[i]]) {
+-        return false
+-      }
+-    }
+-    return true
+-  }
++function mallocDataView(n) {
++  return new DataView(mallocArrayBuffer(n), 0, n)
++}
++exports.mallocDataView = mallocDataView
+ 
+-  var toVisit = []
+-  var parity = makeArray(numFaces, -1)
+-  for(var i=0; i<numFaces; ++i) {
+-    if(parent[i] === i && !sharedBoundary(faces[i])) {
+-      toVisit.push(i)
+-      parity[i] = 0
+-    } else {
+-      parity[i] = -1
+-    }
++function mallocBuffer(n) {
++  n = bits.nextPow2(n)
++  var log_n = bits.log2(n)
++  var cache = BUFFER[log_n]
++  if(cache.length > 0) {
++    return cache.pop()
+   }
++  return new Buffer(n)
++}
++exports.mallocBuffer = mallocBuffer
+ 
+-  //Using face adjacency, classify faces as in/out
+-  var result = []
+-  while(toVisit.length > 0) {
+-    var top = toVisit.pop()
+-    var nbhd = fadj[top]
+-    uniq(nbhd, function(a,b) {
+-      return a-b
+-    })
+-    var nnbhr = nbhd.length
+-    var p = parity[top]
+-    var polyline
+-    if(p === 0) {
+-      var c = faces[top]
+-      polyline = [c]
+-    }
+-    for(var i=0; i<nnbhr; ++i) {
+-      var f = nbhd[i]
+-      if(parity[f] >= 0) {
+-        continue
+-      }
+-      parity[f] = p^1
+-      toVisit.push(f)
+-      if(p === 0) {
+-        var c = faces[f]
+-        if(!sharedBoundary(c)) {
+-          c.reverse()
+-          polyline.push(c)
+-        }
+-      }
+-    }
+-    if(p === 0) {
+-      result.push(polyline)
+-    }
++exports.clearCache = function clearCache() {
++  for(var i=0; i<32; ++i) {
++    POOL.UINT8[i].length = 0
++    POOL.UINT16[i].length = 0
++    POOL.UINT32[i].length = 0
++    POOL.INT8[i].length = 0
++    POOL.INT16[i].length = 0
++    POOL.INT32[i].length = 0
++    POOL.FLOAT[i].length = 0
++    POOL.DOUBLE[i].length = 0
++    POOL.UINT8C[i].length = 0
++    DATA[i].length = 0
++    BUFFER[i].length = 0
+   }
+-
+-  return result
+ }
+-},{"./lib/trim-leaves":155,"edges-to-adjacency-list":156,"planar-dual":157,"point-in-big-polygon":166,"robust-sum":136,"two-product":149,"uniq":152}],168:[function(require,module,exports){
+-arguments[4][9][0].apply(exports,arguments)
+-},{"dup":9}],169:[function(require,module,exports){
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
++},{"bit-twiddle":28,"buffer":37,"dup":56}],163:[function(require,module,exports){
+ "use strict"; "use restrict";
+ 
+ module.exports = UnionFind;
+@@ -34974,28 +35834,36 @@ function UnionFind(count) {
+   }
+ }
+ 
+-UnionFind.prototype.length = function() {
+-  return this.roots.length;
+-}
++var proto = UnionFind.prototype
+ 
+-UnionFind.prototype.makeSet = function() {
++Object.defineProperty(proto, "length", {
++  "get": function() {
++    return this.roots.length
++  }
++})
++
++proto.makeSet = function() {
+   var n = this.roots.length;
+   this.roots.push(n);
+   this.ranks.push(0);
+   return n;
+ }
+ 
+-UnionFind.prototype.find = function(x) {
++proto.find = function(x) {
++  var x0 = x
+   var roots = this.roots;
+   while(roots[x] !== x) {
+-    var y = roots[x];
+-    roots[x] = roots[y];
+-    x = y;
++    x = roots[x]
++  }
++  while(roots[x0] !== x) {
++    var y = roots[x0]
++    roots[x0] = x
++    x0 = y
+   }
+   return x;
+ }
+ 
+-UnionFind.prototype.link = function(x, y) {
++proto.link = function(x, y) {
+   var xr = this.find(x)
+     , yr = this.find(y);
+   if(xr === yr) {
+@@ -35014,625 +35882,433 @@ UnionFind.prototype.link = function(x, y) {
+     ++ranks[xr];
+   }
+ }
++},{}],164:[function(require,module,exports){
++"use strict"
+ 
+-
+-},{}],170:[function(require,module,exports){
+-"use strict"; "use restrict";
+-
+-var bits      = require("bit-twiddle")
+-  , UnionFind = require("union-find")
+-
+-//Returns the dimension of a cell complex
+-function dimension(cells) {
+-  var d = 0
+-    , max = Math.max
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    d = max(d, cells[i].length)
+-  }
+-  return d-1
+-}
+-exports.dimension = dimension
+-
+-//Counts the number of vertices in faces
+-function countVertices(cells) {
+-  var vc = -1
+-    , max = Math.max
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-    for(var j=0, jl=c.length; j<jl; ++j) {
+-      vc = max(vc, c[j])
+-    }
+-  }
+-  return vc+1
+-}
+-exports.countVertices = countVertices
+-
+-//Returns a deep copy of cells
+-function cloneCells(cells) {
+-  var ncells = new Array(cells.length)
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    ncells[i] = cells[i].slice(0)
+-  }
+-  return ncells
+-}
+-exports.cloneCells = cloneCells
+-
+-//Ranks a pair of cells up to permutation
+-function compareCells(a, b) {
+-  var n = a.length
+-    , t = a.length - b.length
+-    , min = Math.min
+-  if(t) {
+-    return t
+-  }
+-  switch(n) {
+-    case 0:
+-      return 0;
+-    case 1:
+-      return a[0] - b[0];
+-    case 2:
+-      var d = a[0]+a[1]-b[0]-b[1]
+-      if(d) {
+-        return d
+-      }
+-      return min(a[0],a[1]) - min(b[0],b[1])
+-    case 3:
+-      var l1 = a[0]+a[1]
+-        , m1 = b[0]+b[1]
+-      d = l1+a[2] - (m1+b[2])
+-      if(d) {
+-        return d
+-      }
+-      var l0 = min(a[0], a[1])
+-        , m0 = min(b[0], b[1])
+-        , d  = min(l0, a[2]) - min(m0, b[2])
+-      if(d) {
+-        return d
+-      }
+-      return min(l0+a[2], l1) - min(m0+b[2], m1)
+-    
+-    //TODO: Maybe optimize n=4 as well?
+-    
+-    default:
+-      var as = a.slice(0)
+-      as.sort()
+-      var bs = b.slice(0)
+-      bs.sort()
+-      for(var i=0; i<n; ++i) {
+-        t = as[i] - bs[i]
+-        if(t) {
+-          return t
+-        }
+-      }
+-      return 0
+-  }
+-}
+-exports.compareCells = compareCells
+-
+-function compareZipped(a, b) {
+-  return compareCells(a[0], b[0])
+-}
+-
+-//Puts a cell complex into normal order for the purposes of findCell queries
+-function normalize(cells, attr) {
+-  if(attr) {
+-    var len = cells.length
+-    var zipped = new Array(len)
+-    for(var i=0; i<len; ++i) {
+-      zipped[i] = [cells[i], attr[i]]
+-    }
+-    zipped.sort(compareZipped)
+-    for(var i=0; i<len; ++i) {
+-      cells[i] = zipped[i][0]
+-      attr[i] = zipped[i][1]
+-    }
+-    return cells
+-  } else {
+-    cells.sort(compareCells)
+-    return cells
+-  }
+-}
+-exports.normalize = normalize
+-
+-//Removes all duplicate cells in the complex
+-function unique(cells) {
+-  if(cells.length === 0) {
+-    return []
+-  }
++function unique_pred(list, compare) {
+   var ptr = 1
+-    , len = cells.length
++    , len = list.length
++    , a=list[0], b=list[0]
+   for(var i=1; i<len; ++i) {
+-    var a = cells[i]
+-    if(compareCells(a, cells[i-1])) {
++    b = a
++    a = list[i]
++    if(compare(a, b)) {
+       if(i === ptr) {
+         ptr++
+         continue
+       }
+-      cells[ptr++] = a
++      list[ptr++] = a
+     }
+   }
+-  cells.length = ptr
+-  return cells
++  list.length = ptr
++  return list
+ }
+-exports.unique = unique;
+ 
+-//Finds a cell in a normalized cell complex
+-function findCell(cells, c) {
+-  var lo = 0
+-    , hi = cells.length-1
+-    , r  = -1
+-  while (lo <= hi) {
+-    var mid = (lo + hi) >> 1
+-      , s   = compareCells(cells[mid], c)
+-    if(s <= 0) {
+-      if(s === 0) {
+-        r = mid
++function unique_eq(list) {
++  var ptr = 1
++    , len = list.length
++    , a=list[0], b = list[0]
++  for(var i=1; i<len; ++i, b=a) {
++    b = a
++    a = list[i]
++    if(a !== b) {
++      if(i === ptr) {
++        ptr++
++        continue
+       }
+-      lo = mid + 1
+-    } else if(s > 0) {
+-      hi = mid - 1
++      list[ptr++] = a
+     }
+   }
+-  return r
++  list.length = ptr
++  return list
+ }
+-exports.findCell = findCell;
+ 
+-//Builds an index for an n-cell.  This is more general than dual, but less efficient
+-function incidence(from_cells, to_cells) {
+-  var index = new Array(from_cells.length)
+-  for(var i=0, il=index.length; i<il; ++i) {
+-    index[i] = []
++function unique(list, compare, sorted) {
++  if(list.length === 0) {
++    return list
+   }
+-  var b = []
+-  for(var i=0, n=to_cells.length; i<n; ++i) {
+-    var c = to_cells[i]
+-    var cl = c.length
+-    for(var k=1, kn=(1<<cl); k<kn; ++k) {
+-      b.length = bits.popCount(k)
+-      var l = 0
+-      for(var j=0; j<cl; ++j) {
+-        if(k & (1<<j)) {
+-          b[l++] = c[j]
+-        }
+-      }
+-      var idx=findCell(from_cells, b)
+-      if(idx < 0) {
+-        continue
+-      }
+-      while(true) {
+-        index[idx++].push(i)
+-        if(idx >= from_cells.length || compareCells(from_cells[idx], b) !== 0) {
+-          break
+-        }
+-      }
++  if(compare) {
++    if(!sorted) {
++      list.sort(compare)
+     }
++    return unique_pred(list, compare)
+   }
+-  return index
++  if(!sorted) {
++    list.sort()
++  }
++  return unique_eq(list)
+ }
+-exports.incidence = incidence
+ 
+-//Computes the dual of the mesh.  This is basically an optimized version of buildIndex for the situation where from_cells is just the list of vertices
+-function dual(cells, vertex_count) {
+-  if(!vertex_count) {
+-    return incidence(unique(skeleton(cells, 0)), cells, 0)
+-  }
+-  var res = new Array(vertex_count)
+-  for(var i=0; i<vertex_count; ++i) {
+-    res[i] = []
+-  }
+-  for(var i=0, len=cells.length; i<len; ++i) {
+-    var c = cells[i]
+-    for(var j=0, cl=c.length; j<cl; ++j) {
+-      res[c[j]].push(i)
+-    }
++module.exports = unique
++
++},{}],165:[function(require,module,exports){
++"use strict"
++
++module.exports = createText
++
++var vectorizeText = require("./lib/vtext")
++var defaultCanvas = null
++var defaultContext = null
++
++if(typeof document !== 'undefined') {
++  defaultCanvas = document.createElement('canvas')
++  defaultCanvas.width = 8192
++  defaultCanvas.height = 1024
++  defaultContext = defaultCanvas.getContext("2d")
++}
++
++function createText(str, options) {
++  if((typeof options !== "object") || (options === null)) {
++    options = {}
+   }
+-  return res
++  return vectorizeText(
++    str,
++    options.canvas || defaultCanvas,
++    options.context || defaultContext,
++    options)
+ }
+-exports.dual = dual
+ 
+-//Enumerates all cells in the complex
+-function explode(cells) {
+-  var result = []
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-      , cl = c.length|0
+-    for(var j=1, jl=(1<<cl); j<jl; ++j) {
+-      var b = []
+-      for(var k=0; k<cl; ++k) {
+-        if((j >>> k) & 1) {
+-          b.push(c[k])
+-        }
+-      }
+-      result.push(b)
++},{"./lib/vtext":166}],166:[function(require,module,exports){
++"use strict"
++
++module.exports = vectorizeText
++module.exports.processPixels = processPixels
++
++var surfaceNets = require('surface-nets')
++var ndarray = require('ndarray')
++var simplify = require('simplify-planar-graph')
++var cleanPSLG = require('clean-pslg')
++var cdt2d = require('cdt2d')
++var toPolygonCrappy = require('planar-graph-to-polyline')
++
++function transformPositions(positions, options, size) {
++  var align = options.textAlign || "start"
++  var baseline = options.textBaseline || "alphabetic"
++
++  var lo = [1<<30, 1<<30]
++  var hi = [0,0]
++  var n = positions.length
++  for(var i=0; i<n; ++i) {
++    var p = positions[i]
++    for(var j=0; j<2; ++j) {
++      lo[j] = Math.min(lo[j], p[j])|0
++      hi[j] = Math.max(hi[j], p[j])|0
+     }
+   }
+-  return normalize(result)
+-}
+-exports.explode = explode
+ 
+-//Enumerates all of the n-cells of a cell complex
+-function skeleton(cells, n) {
+-  if(n < 0) {
+-    return []
++  var xShift = 0
++  switch(align) {
++    case "center":
++      xShift = -0.5 * (lo[0] + hi[0])
++    break
++
++    case "right":
++    case "end":
++      xShift = -hi[0]
++    break
++
++    case "left":
++    case "start":
++      xShift = -lo[0]
++    break
++
++    default:
++      throw new Error("vectorize-text: Unrecognized textAlign: '" + align + "'")
+   }
+-  var result = []
+-    , k0     = (1<<(n+1))-1
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var k=k0; k<(1<<c.length); k=bits.nextCombination(k)) {
+-      var b = new Array(n+1)
+-        , l = 0
+-      for(var j=0; j<c.length; ++j) {
+-        if(k & (1<<j)) {
+-          b[l++] = c[j]
+-        }
+-      }
+-      result.push(b)
+-    }
++
++  var yShift = 0
++  switch(baseline) {
++    case "hanging":
++    case "top":
++      yShift = -lo[1]
++    break
++
++    case "middle":
++      yShift = -0.5 * (lo[1] + hi[1])
++    break
++
++    case "alphabetic":
++    case "ideographic":
++      yShift = -3 * size
++    break
++
++    case "bottom":
++      yShift = -hi[1]
++    break
++
++    default:
++      throw new Error("vectorize-text: Unrecoginized textBaseline: '" + baseline + "'")
+   }
+-  return normalize(result)
++
++  var scale = 1.0 / size
++  if("lineHeight" in options) {
++    scale *= +options.lineHeight
++  } else if("width" in options) {
++    scale = options.width / (hi[0] - lo[0])
++  } else if("height" in options) {
++    scale = options.height / (hi[1] - lo[1])
++  }
++
++  return positions.map(function(p) {
++    return [ scale * (p[0] + xShift), scale * (p[1] + yShift) ]
++  })
+ }
+-exports.skeleton = skeleton;
+ 
+-//Computes the boundary of all cells, does not remove duplicates
+-function boundary(cells) {
+-  var res = []
+-  for(var i=0,il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-    for(var j=0,cl=c.length; j<cl; ++j) {
+-      var b = new Array(c.length-1)
+-      for(var k=0, l=0; k<cl; ++k) {
+-        if(k !== j) {
+-          b[l++] = c[k]
+-        }
+-      }
+-      res.push(b)
+-    }
++function getPixels(canvas, context, str, size) {
++  var width = Math.ceil(context.measureText(str).width + 2*size)|0
++  if(width > 8192) {
++    throw new Error("vectorize-text: String too long (sorry, this will get fixed later)")
+   }
+-  return normalize(res)
++  var height = 3 * size
++  if(canvas.height < height) {
++    canvas.height = height
++  }
++
++  context.fillStyle = "#000"
++  context.fillRect(0, 0, canvas.width, canvas.height)
++
++  context.fillStyle = "#fff"
++  context.fillText(str, size, 2*size)
++
++  //Cut pixels from image
++  var pixelData = context.getImageData(0, 0, width, height)
++  var pixels = ndarray(pixelData.data, [height, width, 4])
++
++  return pixels.pick(-1,-1,0).transpose(1,0)
+ }
+-exports.boundary = boundary;
+ 
+-//Computes connected components for a dense cell complex
+-function connectedComponents_dense(cells, vertex_count) {
+-  var labels = new UnionFind(vertex_count)
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      for(var k=j+1; k<c.length; ++k) {
+-        labels.link(c[j], c[k])
+-      }
+-    }
+-  }
+-  var components = []
+-    , component_labels = labels.ranks
+-  for(var i=0; i<component_labels.length; ++i) {
+-    component_labels[i] = -1
++function getContour(pixels, doSimplify) {
++  var contour = surfaceNets(pixels, 128)
++  if(doSimplify) {
++    return simplify(contour.cells, contour.positions, 0.25)
+   }
+-  for(var i=0; i<cells.length; ++i) {
+-    var l = labels.find(cells[i][0])
+-    if(component_labels[l] < 0) {
+-      component_labels[l] = components.length
+-      components.push([cells[i].slice(0)])
+-    } else {
+-      components[component_labels[l]].push(cells[i].slice(0))
+-    }
++  return {
++    edges: contour.cells,
++    positions: contour.positions
+   }
+-  return components
+ }
+ 
+-//Computes connected components for a sparse graph
+-function connectedComponents_sparse(cells) {
+-  var vertices  = unique(normalize(skeleton(cells, 0)))
+-    , labels    = new UnionFind(vertices.length)
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      var vj = findCell(vertices, [c[j]])
+-      for(var k=j+1; k<c.length; ++k) {
+-        labels.link(vj, findCell(vertices, [c[k]]))
++function processPixelsImpl(pixels, options, size, simplify) {
++  //Extract contour
++  var contour = getContour(pixels, simplify)
++
++  //Apply warp to positions
++  var positions = transformPositions(contour.positions, options, size)
++  var edges     = contour.edges
++  var flip = "ccw" === options.orientation
++
++  //Clean up the PSLG, resolve self intersections, etc.
++  cleanPSLG(positions, edges)
++
++  //If triangulate flag passed, triangulate the result
++  if(options.polygons || options.polygon || options.polyline) {
++    var result = toPolygonCrappy(edges, positions)
++    var nresult = new Array(result.length)
++    for(var i=0; i<result.length; ++i) {
++      var loops = result[i]
++      var nloops = new Array(loops.length)
++      for(var j=0; j<loops.length; ++j) {
++        var loop = loops[j]
++        var nloop = new Array(loop.length)
++        for(var k=0; k<loop.length; ++k) {
++          nloop[k] = positions[loop[k]].slice()
++        }
++        if(flip) {
++          nloop.reverse()
++        }
++        nloops[j] = nloop
+       }
++      nresult[i] = nloops
+     }
+-  }
+-  var components        = []
+-    , component_labels  = labels.ranks
+-  for(var i=0; i<component_labels.length; ++i) {
+-    component_labels[i] = -1
+-  }
+-  for(var i=0; i<cells.length; ++i) {
+-    var l = labels.find(findCell(vertices, [cells[i][0]]));
+-    if(component_labels[l] < 0) {
+-      component_labels[l] = components.length
+-      components.push([cells[i].slice(0)])
+-    } else {
+-      components[component_labels[l]].push(cells[i].slice(0))
++    return nresult
++  } else if(options.triangles || options.triangulate || options.triangle) {
++    return {
++      cells: cdt2d(positions, edges, {
++        delaunay: false,
++        exterior: false,
++        interior: true
++      }),
++      positions: positions
++    }
++  } else {
++    return {
++      edges:     edges,
++      positions: positions
+     }
+   }
+-  return components
+ }
+ 
+-//Computes connected components for a cell complex
+-function connectedComponents(cells, vertex_count) {
+-  if(vertex_count) {
+-    return connectedComponents_dense(cells, vertex_count)
++function processPixels(pixels, options, size) {
++  try {
++    return processPixelsImpl(pixels, options, size, true)
++  } catch(e) {}
++  try {
++    return processPixelsImpl(pixels, options, size, false)
++  } catch(e) {}
++  if(options.polygons || options.polyline || options.polygon) {
++    return []
++  }
++  if(options.triangles || options.triangulate || options.triangle) {
++    return {
++      cells: [],
++      positions: []
++    }
++  }
++  return {
++    edges: [],
++    positions: []
+   }
+-  return connectedComponents_sparse(cells)
+ }
+-exports.connectedComponents = connectedComponents
+ 
+-},{"bit-twiddle":168,"union-find":169}],171:[function(require,module,exports){
+-"use strict"
++function vectorizeText(str, canvas, context, options) {
++  var size = options.size || 64
++  var family = options.font || "normal"
+ 
+-module.exports = simplifyPolygon
++  context.font = size + "px " + family
++  context.textAlign = "start"
++  context.textBaseline = "alphabetic"
++  context.direction = "ltr"
+ 
+-var orient = require("robust-orientation")
+-var sc = require("simplicial-complex")
++  var pixels = getPixels(canvas, context, str, size)
+ 
+-function errorWeight(base, a, b) {
+-  var area = Math.abs(orient(base, a, b))
+-  var perim = Math.sqrt(Math.pow(a[0] - b[0], 2) + Math.pow(a[1]-b[1], 2))
+-  return area / perim
++  return processPixels(pixels, options, size)
+ }
+ 
+-function simplifyPolygon(cells, positions, minArea) {
+-
+-  var n = positions.length
+-  var nc = cells.length
+-  var inv = new Array(n)
+-  var outv = new Array(n)
+-  var weights = new Array(n)
+-  var dead = new Array(n)
+-  
+-  //Initialize tables
+-  for(var i=0; i<n; ++i) {
+-    inv[i] = outv[i] = -1
+-    weights[i] = Infinity
+-    dead[i] = false
+-  }
++},{"cdt2d":40,"clean-pslg":46,"ndarray":123,"planar-graph-to-polyline":131,"simplify-planar-graph":150,"surface-nets":155}],167:[function(require,module,exports){
++var hiddenStore = require('./hidden-store.js');
+ 
+-  //Compute neighbors
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    if(c.length !== 2) {
+-      throw new Error("Input must be a graph")
+-    }
+-    var s = c[1]
+-    var t = c[0]
+-    if(outv[t] !== -1) {
+-      outv[t] = -2
+-    } else {
+-      outv[t] = s
+-    }
+-    if(inv[s] !== -1) {
+-      inv[s] = -2
+-    } else {
+-      inv[s] = t
+-    }
+-  }
++module.exports = createStore;
+ 
+-  //Updates the weight for vertex i
+-  function computeWeight(i) {
+-    if(dead[i]) {
+-      return Infinity
+-    }
+-    //TODO: Check that the line segment doesn't cross once simplified
+-    var s = inv[i]
+-    var t = outv[i]
+-    if((s<0) || (t<0)) {
+-      return Infinity
+-    } else {
+-      return errorWeight(positions[i], positions[s], positions[t])
+-    }
+-  }
++function createStore() {
++    var key = {};
+ 
+-  //Swaps two nodes on the heap (i,j) are the index of the nodes
+-  function heapSwap(i,j) {
+-    var a = heap[i]
+-    var b = heap[j]
+-    heap[i] = b
+-    heap[j] = a
+-    index[a] = j
+-    index[b] = i
+-  }
++    return function (obj) {
++        if ((typeof obj !== 'object' || obj === null) &&
++            typeof obj !== 'function'
++        ) {
++            throw new Error('Weakmap-shim: Key must be object')
++        }
+ 
+-  //Returns the weight of node i on the heap
+-  function heapWeight(i) {
+-    return weights[heap[i]]
+-  }
++        var store = obj.valueOf(key);
++        return store && store.identity === key ?
++            store : hiddenStore(obj, key);
++    };
++}
+ 
+-  function heapParent(i) {
+-    if(i & 1) {
+-      return (i - 1) >> 1
+-    }
+-    return (i >> 1) - 1
+-  }
++},{"./hidden-store.js":168}],168:[function(require,module,exports){
++module.exports = hiddenStore;
+ 
+-  //Bubble element i down the heap
+-  function heapDown(i) {
+-    var w = heapWeight(i)
+-    while(true) {
+-      var tw = w
+-      var left  = 2*i + 1
+-      var right = 2*(i + 1)
+-      var next = i
+-      if(left < heapCount) {
+-        var lw = heapWeight(left)
+-        if(lw < tw) {
+-          next = left
+-          tw = lw
+-        }
+-      }
+-      if(right < heapCount) {
+-        var rw = heapWeight(right)
+-        if(rw < tw) {
+-          next = right
+-        }
+-      }
+-      if(next === i) {
+-        return i
+-      }
+-      heapSwap(i, next)
+-      i = next      
+-    }
+-  }
++function hiddenStore(obj, key) {
++    var store = { identity: key };
++    var valueOf = obj.valueOf;
+ 
+-  //Bubbles element i up the heap
+-  function heapUp(i) {
+-    var w = heapWeight(i)
+-    while(i > 0) {
+-      var parent = heapParent(i)
+-      if(parent >= 0) {
+-        var pw = heapWeight(parent)
+-        if(w < pw) {
+-          heapSwap(i, parent)
+-          i = parent
+-          continue
+-        }
+-      }
+-      return i
+-    }
+-  }
++    Object.defineProperty(obj, "valueOf", {
++        value: function (value) {
++            return value !== key ?
++                valueOf.apply(this, arguments) : store;
++        },
++        writable: true
++    });
+ 
+-  //Pop minimum element
+-  function heapPop() {
+-    if(heapCount > 0) {
+-      var head = heap[0]
+-      heapSwap(0, heapCount-1)
+-      heapCount -= 1
+-      heapDown(0)
+-      return head
+-    }
+-    return -1
+-  }
++    return store;
++}
+ 
+-  //Update heap item i
+-  function heapUpdate(i, w) {
+-    var a = heap[i]
+-    if(weights[a] === w) {
+-      return i
+-    }
+-    weights[a] = -Infinity
+-    heapUp(i)
+-    heapPop()
+-    weights[a] = w
+-    heapCount += 1
+-    return heapUp(heapCount-1)
+-  }
++},{}],169:[function(require,module,exports){
++// Original - @Gozola. 
++// https://gist.github.com/Gozala/1269991
++// This is a reimplemented version (with a few bug fixes).
+ 
+-  //Kills a vertex (assume vertex already removed from heap)
+-  function kill(i) {
+-    if(dead[i]) {
+-      return
+-    }
+-    //Kill vertex
+-    dead[i] = true
+-    //Fixup topology
+-    var s = inv[i]
+-    var t = outv[i]
+-    if(inv[t] >= 0) {
+-      inv[t] = s
+-    }
+-    if(outv[s] >= 0) {
+-      outv[s] = t
+-    }
++var createStore = require('./create-store.js');
+ 
+-    //Update weights on s and t
+-    if(index[s] >= 0) {
+-      heapUpdate(index[s], computeWeight(s))
+-    }
+-    if(index[t] >= 0) {
+-      heapUpdate(index[t], computeWeight(t))
+-    }
+-  }
++module.exports = weakMap;
+ 
+-  //Initialize weights and heap
+-  var heap = []
+-  var index = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    var w = weights[i] = computeWeight(i)
+-    if(w < Infinity) {
+-      index[i] = heap.length
+-      heap.push(i)
+-    } else {
+-      index[i] = -1
+-    }
+-  }
+-  var heapCount = heap.length
+-  for(var i=heapCount>>1; i>=0; --i) {
+-    heapDown(i)
+-  }
+-  
+-  //Kill vertices
+-  while(true) {
+-    var hmin = heapPop()
+-    if((hmin < 0) || (weights[hmin] > minArea)) {
+-      break
+-    }
+-    kill(hmin)
+-  }
++function weakMap() {
++    var privates = createStore();
+ 
+-  //Build collapsed vertex table
+-  var npositions = []
+-  for(var i=0; i<n; ++i) {
+-    if(!dead[i]) {
+-      index[i] = npositions.length
+-      npositions.push(positions[i].slice())
++    return {
++        'get': function (key, fallback) {
++            var store = privates(key)
++            return store.hasOwnProperty('value') ?
++                store.value : fallback
++        },
++        'set': function (key, value) {
++            privates(key).value = value;
++        },
++        'has': function(key) {
++            return 'value' in privates(key);
++        },
++        'delete': function (key) {
++            return delete privates(key).value;
++        }
+     }
+-  }
+-  var nv = npositions.length
++}
+ 
+-  function tortoiseHare(seq, start) {
+-    if(seq[start] < 0) {
+-      return start
+-    }
+-    var t = start
+-    var h = start
+-    do {
+-      //Walk two steps with h
+-      var nh = seq[h]
+-      if(!dead[h] || nh < 0 || nh === h) {
+-        break
+-      }
+-      h = nh
+-      nh = seq[h]
+-      if(!dead[h] || nh < 0 || nh === h) {
+-        break
+-      }
+-      h = nh
++},{"./create-store.js":167}],170:[function(require,module,exports){
++module.exports = require('cwise-compiler')({
++    args: ['array', {
++        offset: [1],
++        array: 0
++    }, 'scalar', 'scalar', 'index'],
++    pre: {
++        "body": "{}",
++        "args": [],
++        "thisVars": [],
++        "localVars": []
++    },
++    post: {
++        "body": "{}",
++        "args": [],
++        "thisVars": [],
++        "localVars": []
++    },
++    body: {
++        "body": "{\n        var _inline_1_da = _inline_1_arg0_ - _inline_1_arg3_\n        var _inline_1_db = _inline_1_arg1_ - _inline_1_arg3_\n        if((_inline_1_da >= 0) !== (_inline_1_db >= 0)) {\n          _inline_1_arg2_.push(_inline_1_arg4_[0] + 0.5 + 0.5 * (_inline_1_da + _inline_1_db) / (_inline_1_da - _inline_1_db))\n        }\n      }",
++        "args": [{
++            "name": "_inline_1_arg0_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg1_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg2_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg3_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 2
++        }, {
++            "name": "_inline_1_arg4_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }],
++        "thisVars": [],
++        "localVars": ["_inline_1_da", "_inline_1_db"]
++    },
++    funcName: 'zeroCrossings'
++})
+ 
+-      //Walk one step with t
+-      t = seq[t]
+-    } while(t !== h)
+-    //Compress cycles
+-    for(var v=start; v!==h; v = seq[v]) {
+-      seq[v] = h
+-    }
+-    return h
+-  }
++},{"cwise-compiler":50}],171:[function(require,module,exports){
++"use strict"
+ 
+-  var ncells = []
+-  cells.forEach(function(c) {
+-    var tin = tortoiseHare(inv, c[0])
+-    var tout = tortoiseHare(outv, c[1])
+-    if(tin >= 0 && tout >= 0 && tin !== tout) {
+-      var cin = index[tin]
+-      var cout = index[tout]
+-      if(cin !== cout) {
+-        ncells.push([ cin, cout ])
+-      }
+-    }
+-  })
++module.exports = findZeroCrossings
+ 
+-  //Normalize result
+-  sc.unique(sc.normalize(ncells))
++var core = require("./lib/zc-core")
+ 
+-  //Return final list of cells
+-  return {
+-    positions: npositions,
+-    edges: ncells
+-  }
++function findZeroCrossings(array, level) {
++  var cross = []
++  level = +level || 0.0
++  core(array.hi(array.shape[0]-1), cross, level)
++  return cross
+ }
+-},{"robust-orientation":133,"simplicial-complex":170}],172:[function(require,module,exports){
++},{"./lib/zc-core":170}],172:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -36896,7 +37572,7 @@ function lineIntersect(x1, y1, x2, y2, x3, y3, x4, y4) {
+     return {x: x1 + a * t, y: y1 + d * t};
+ }
+ 
+-},{"../../lib":256,"../../lib/setcursor":265,"../../lib/svg_text_utils":269,"../../plotly":276,"../../plots/cartesian/axes":279,"../color":176,"../dragelement":197,"../drawing":199,"./arrow_paths":172,"./attributes":173,"d3":62,"fast-isnumeric":65}],175:[function(require,module,exports){
++},{"../../lib":256,"../../lib/setcursor":265,"../../lib/svg_text_utils":269,"../../plotly":276,"../../plots/cartesian/axes":279,"../color":176,"../dragelement":197,"../drawing":199,"./arrow_paths":172,"./attributes":173,"d3":54,"fast-isnumeric":60}],175:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -37090,7 +37766,7 @@ function cleanOne(val) {
+     return 'rgb(' + rgbStr + ')';
+ }
+ 
+-},{"./attributes":175,"fast-isnumeric":65,"tinycolor2":148}],177:[function(require,module,exports){
++},{"./attributes":175,"fast-isnumeric":60,"tinycolor2":157}],177:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -37942,7 +38618,7 @@ module.exports = function draw(gd, id) {
+     return component;
+ };
+ 
+-},{"../../lib":256,"../../lib/extend":253,"../../lib/setcursor":265,"../../plotly":276,"../../plots/cartesian/axes":279,"../../plots/cartesian/axis_defaults":280,"../../plots/cartesian/layout_attributes":288,"../../plots/cartesian/position_defaults":291,"../../plots/plots":303,"../color":176,"../dragelement":197,"../drawing":199,"../titles":239,"./attributes":177,"d3":62,"tinycolor2":148}],180:[function(require,module,exports){
++},{"../../lib":256,"../../lib/extend":253,"../../lib/setcursor":265,"../../plotly":276,"../../plots/cartesian/axes":279,"../../plots/cartesian/axis_defaults":280,"../../plots/cartesian/layout_attributes":288,"../../plots/cartesian/position_defaults":291,"../../plots/plots":303,"../color":176,"../dragelement":197,"../drawing":199,"../titles":239,"./attributes":177,"d3":54,"tinycolor2":157}],180:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -38227,7 +38903,7 @@ module.exports = function colorScaleDefaults(traceIn, traceOut, layout, coerce,
+     if(showScale) colorbarDefaults(containerIn, containerOut, layout);
+ };
+ 
+-},{"../../lib":256,"../colorbar/defaults":178,"../colorbar/has_colorbar":180,"./flip_scale":187,"./is_valid_scale":191,"fast-isnumeric":65}],187:[function(require,module,exports){
++},{"../../lib":256,"../colorbar/defaults":178,"../colorbar/has_colorbar":180,"./flip_scale":187,"./is_valid_scale":191,"fast-isnumeric":60}],187:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -38338,7 +39014,7 @@ module.exports = function hasColorscale(trace, containerStr) {
+     );
+ };
+ 
+-},{"../../lib":256,"./is_valid_scale":191,"fast-isnumeric":65}],190:[function(require,module,exports){
++},{"../../lib":256,"./is_valid_scale":191,"fast-isnumeric":60}],190:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -38428,7 +39104,7 @@ module.exports = function isValidScaleArray(scl) {
+     return true;
+ };
+ 
+-},{"tinycolor2":148}],193:[function(require,module,exports){
++},{"tinycolor2":157}],193:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -38477,7 +39153,7 @@ module.exports = function makeScaleFunction(scl, cmin, cmax) {
+     };
+ };
+ 
+-},{"../../lib":256,"../color":176,"d3":62,"fast-isnumeric":65,"tinycolor2":148}],194:[function(require,module,exports){
++},{"../../lib":256,"../color":176,"d3":54,"fast-isnumeric":60,"tinycolor2":157}],194:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -39479,7 +40155,7 @@ drawing.setClipUrl = function(s, localId) {
+     s.attr('clip-path', 'url(' + url + ')');
+ };
+ 
+-},{"../../constants/xmlns_namespaces":247,"../../lib":256,"../../lib/svg_text_utils":269,"../../plots/plots":303,"../../traces/scatter/make_bubble_size_func":355,"../../traces/scatter/subtypes":360,"../color":176,"../colorscale":190,"./symbol_defs":200,"d3":62,"fast-isnumeric":65}],200:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":247,"../../lib":256,"../../lib/svg_text_utils":269,"../../plots/plots":303,"../../traces/scatter/make_bubble_size_func":355,"../../traces/scatter/subtypes":360,"../color":176,"../colorscale":190,"./symbol_defs":200,"d3":54,"fast-isnumeric":60}],200:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -39955,7 +40631,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"d3":62}],201:[function(require,module,exports){
++},{"d3":54}],201:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -40117,7 +40793,7 @@ function calcOneAxis(calcTrace, trace, axis, coord) {
+     Axes.expand(axis, vals, {padded: true});
+ }
+ 
+-},{"../../plots/cartesian/axes":279,"../../plots/plots":303,"./compute_error":203,"fast-isnumeric":65}],203:[function(require,module,exports){
++},{"../../plots/cartesian/axes":279,"../../plots/plots":303,"./compute_error":203,"fast-isnumeric":60}],203:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -40290,7 +40966,7 @@ module.exports = function(traceIn, traceOut, defaultColor, opts) {
+     }
+ };
+ 
+-},{"../../lib":256,"../../plots/plots":303,"./attributes":201,"fast-isnumeric":65}],205:[function(require,module,exports){
++},{"../../lib":256,"../../plots/plots":303,"./attributes":201,"fast-isnumeric":60}],205:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -40470,7 +41146,7 @@ function errorCoords(d, xa, ya) {
+     return out;
+ }
+ 
+-},{"../../lib":256,"../../traces/scatter/subtypes":360,"d3":62,"fast-isnumeric":65}],207:[function(require,module,exports){
++},{"../../lib":256,"../../traces/scatter/subtypes":360,"d3":54,"fast-isnumeric":60}],207:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -40507,7 +41183,7 @@ module.exports = function style(traces) {
+     });
+ };
+ 
+-},{"../color":176,"d3":62}],208:[function(require,module,exports){
++},{"../color":176,"d3":54}],208:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -40861,7 +41537,7 @@ module.exports = function draw(gd) {
+     imagesAbove.each(applyAttributes);
+ };
+ 
+-},{"../../plots/cartesian/axes":279,"../drawing":199,"d3":62}],211:[function(require,module,exports){
++},{"../../plots/cartesian/axes":279,"../drawing":199,"d3":54}],211:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -40978,6 +41654,13 @@ module.exports = {
+         
+         
+     },
++    horizontalspacing: {
++        valType: 'enumerated',
++        values: ['column', 'wrapped'],
++        dflt: ['column'],
++        
++        
++    },
+     traceorder: {
+         valType: 'flaglist',
+         flags: ['reversed', 'grouped'],
+@@ -41067,6 +41750,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+ 
+     var visibleTraces = 0,
+         defaultOrder = 'normal',
++        defaultHorizontalSpacing = 'column',
+         defaultX,
+         defaultY,
+         defaultXAnchor,
+@@ -41131,6 +41815,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+     coerce('xanchor', defaultXAnchor);
+     coerce('y', defaultY);
+     coerce('yanchor', defaultYAnchor);
++    coerce('horizontalspacing', defaultHorizontalSpacing);
+     Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
+ };
+ 
+@@ -41611,7 +42296,8 @@ function computeLegendDimensions(gd, groups, traces) {
+     var fullLayout = gd._fullLayout,
+         opts = fullLayout.legend,
+         borderwidth = opts.borderwidth,
+-        isGrouped = helpers.isGrouped(opts);
++        isGrouped = helpers.isGrouped(opts),
++        isHorizontalColumn = helpers.isHorizontalColumn(opts);
+ 
+     if(helpers.isVertical(opts)) {
+         if(isGrouped) {
+@@ -41718,7 +42404,7 @@ function computeLegendDimensions(gd, groups, traces) {
+         traces.each(function(d) {
+ 
+             var legendItem = d[0],
+-                traceWidth = maxTraceWidth,
++                traceWidth = isHorizontalColumn ? maxTraceWidth : 40 + d[0],
+                 traceGap = opts.tracegroupgap || 5;
+ 
+             if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
+@@ -41807,7 +42493,7 @@ function expandHorizontalMargin(gd) {
+     });
+ }
+ 
+-},{"../../lib":256,"../../plotly":276,"../../plots/plots":303,"../color":176,"../dragelement":197,"../drawing":199,"./anchor_utils":212,"./constants":214,"./get_legend_data":217,"./helpers":218,"./style":220,"d3":62}],217:[function(require,module,exports){
++},{"../../lib":256,"../../plotly":276,"../../plots/plots":303,"../color":176,"../dragelement":197,"../drawing":199,"./anchor_utils":212,"./constants":214,"./get_legend_data":217,"./helpers":218,"./style":220,"d3":54}],217:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -41944,6 +42630,9 @@ exports.isReversed = function isReversed(legendLayout) {
+     return (legendLayout.traceorder || '').indexOf('reversed') !== -1;
+ };
+ 
++exports.isHorizontalColumn = function isReversed(legendLayout) {
++    return legendLayout.horizontalspacing === 'column';
++};
+ },{"../../plots/plots":303}],219:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+@@ -42189,7 +42878,7 @@ function stylePies(d) {
+     if(pts.size()) pts.call(stylePie, d[0], trace);
+ }
+ 
+-},{"../../lib":256,"../../plots/plots":303,"../../traces/pie/style_one":339,"../../traces/scatter/subtypes":360,"../color":176,"../drawing":199,"d3":62}],221:[function(require,module,exports){
++},{"../../lib":256,"../../plots/plots":303,"../../traces/pie/style_one":339,"../../traces/scatter/subtypes":360,"../color":176,"../drawing":199,"d3":54}],221:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -42987,7 +43676,7 @@ function createModeBar(gd, buttons) {
+ 
+ module.exports = createModeBar;
+ 
+-},{"../../../build/ploticon":2,"../../lib":256,"d3":62}],223:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":256,"d3":54}],223:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43741,7 +44430,7 @@ function reposition(gd, buttons, opts, axName) {
+     });
+ }
+ 
+-},{"../../lib/svg_text_utils":269,"../../plotly":276,"../../plots/cartesian/axis_ids":281,"../../plots/plots":303,"../color":176,"../drawing":199,"../legend/anchor_utils":212,"./constants":226,"./get_update_object":229,"d3":62}],229:[function(require,module,exports){
++},{"../../lib/svg_text_utils":269,"../../plotly":276,"../../plots/cartesian/axis_ids":281,"../../plots/plots":303,"../color":176,"../drawing":199,"../legend/anchor_utils":212,"./constants":226,"./get_update_object":229,"d3":54}],229:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43799,7 +44488,7 @@ function getXRange(axisLayout, buttonLayout) {
+     return [range0, range1];
+ }
+ 
+-},{"d3":62}],230:[function(require,module,exports){
++},{"d3":54}],230:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44488,7 +45177,7 @@ function makeScatter(trace, pointPairs, w, h) {
+     return [line, markers, fill];
+ }
+ 
+-},{"../../constants/xmlns_namespaces":247,"../../lib":256,"../drawing":199,"../drawing/symbol_defs":200,"./helpers":234,"d3":62}],237:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":247,"../../lib":256,"../drawing":199,"../drawing/symbol_defs":200,"./helpers":234,"d3":54}],237:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45369,7 +46058,7 @@ function shapeBounds(ax, v0, v1, path, paramsToUse) {
+     if(max >= min) return [min, max];
+ }
+ 
+-},{"../../lib":256,"../../lib/setcursor":265,"../../plotly":276,"../../plots/cartesian/axes":279,"../color":176,"../dragelement":197,"../drawing":199,"./attributes":237,"fast-isnumeric":65}],239:[function(require,module,exports){
++},{"../../lib":256,"../../lib/setcursor":265,"../../plotly":276,"../../plots/cartesian/axes":279,"../color":176,"../dragelement":197,"../drawing":199,"./attributes":237,"fast-isnumeric":60}],239:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45599,7 +46288,7 @@ Titles.draw = function(gd, titleClass, options) {
+     el.classed('js-placeholder', isplaceholder);
+ };
+ 
+-},{"../../lib":256,"../../lib/svg_text_utils":269,"../../plotly":276,"../../plots/plots":303,"../color":176,"../drawing":199,"d3":62,"fast-isnumeric":65}],240:[function(require,module,exports){
++},{"../../lib":256,"../../lib/svg_text_utils":269,"../../plotly":276,"../../plots/plots":303,"../color":176,"../drawing":199,"d3":54,"fast-isnumeric":60}],240:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46347,7 +47036,7 @@ function clearPushMargins(gd) {
+     }
+ }
+ 
+-},{"../../lib":256,"../../lib/svg_text_utils":269,"../../plotly":276,"../../plots/plots":303,"../color":176,"../drawing":199,"../legend/anchor_utils":212,"./constants":241,"d3":62}],244:[function(require,module,exports){
++},{"../../lib":256,"../../lib/svg_text_utils":269,"../../plotly":276,"../../plots/plots":303,"../color":176,"../drawing":199,"../legend/anchor_utils":212,"./constants":241,"d3":54}],244:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46484,7 +47173,7 @@ exports.Queue = Plotly.Queue;
+ // export d3 used in the bundle
+ exports.d3 = require('d3');
+ 
+-},{"../build/ploticon":2,"./plot_api/set_plot_config":273,"./plot_api/to_image":274,"./plot_api/validate":275,"./plotly":276,"./snapshot/download":310,"d3":62}],249:[function(require,module,exports){
++},{"../build/ploticon":2,"./plot_api/set_plot_config":273,"./plot_api/to_image":274,"./plot_api/validate":275,"./plotly":276,"./snapshot/download":310,"d3":54}],249:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46827,7 +47516,7 @@ exports.validate = function(value, opts) {
+     return out !== failed;
+ };
+ 
+-},{"../components/colorscale/get_scale":188,"../components/colorscale/scales":194,"./nested_property":260,"fast-isnumeric":65,"tinycolor2":148}],251:[function(require,module,exports){
++},{"../components/colorscale/get_scale":188,"../components/colorscale/scales":194,"./nested_property":260,"fast-isnumeric":60,"tinycolor2":157}],251:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47166,7 +47855,7 @@ exports.parseDate = function(v) {
+     return out;
+ };
+ 
+-},{"../lib":256,"d3":62,"fast-isnumeric":65}],252:[function(require,module,exports){
++},{"../lib":256,"d3":54,"fast-isnumeric":60}],252:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47300,7 +47989,7 @@ var Events = {
+ 
+ module.exports = Events;
+ 
+-},{"events":14}],253:[function(require,module,exports){
++},{"events":59}],253:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47493,7 +48182,7 @@ function formatColor(containerIn, opacityIn, len) {
+ 
+ module.exports = formatColor;
+ 
+-},{"../components/color/attributes":175,"../components/colorscale/make_scale_function":193,"./str2rgbarray":268,"fast-isnumeric":65,"tinycolor2":148}],255:[function(require,module,exports){
++},{"../components/color/attributes":175,"../components/colorscale/make_scale_function":193,"./str2rgbarray":268,"fast-isnumeric":60,"tinycolor2":157}],255:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47567,7 +48256,7 @@ function convertHTMLToUnicode(html) {
+ 
+ module.exports = convertHTMLToUnicode;
+ 
+-},{"superscript-text":137}],256:[function(require,module,exports){
++},{"superscript-text":154}],256:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48187,7 +48876,7 @@ lib.numSeparate = function(value, separators) {
+     return x1 + x2;
+ };
+ 
+-},{"./coerce":250,"./dates":251,"./extend":253,"./is_plain_object":257,"./loggers":258,"./matrix":259,"./nested_property":260,"./notifier":261,"./search":264,"./stats":267,"d3":62}],257:[function(require,module,exports){
++},{"./coerce":250,"./dates":251,"./extend":253,"./is_plain_object":257,"./loggers":258,"./matrix":259,"./nested_property":260,"./notifier":261,"./search":264,"./stats":267,"d3":54}],257:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48649,7 +49338,7 @@ function badContainer(container, propStr, propParts) {
+     };
+ }
+ 
+-},{"fast-isnumeric":65}],261:[function(require,module,exports){
++},{"fast-isnumeric":60}],261:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48726,7 +49415,7 @@ module.exports = function(text, displayLength) {
+         });
+ };
+ 
+-},{"d3":62,"fast-isnumeric":65}],262:[function(require,module,exports){
++},{"d3":54,"fast-isnumeric":60}],262:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49289,7 +49978,7 @@ exports.roundUp = function(val, arrayIn, reverse) {
+     return arrayIn[low];
+ };
+ 
+-},{"../lib":256,"fast-isnumeric":65}],265:[function(require,module,exports){
++},{"../lib":256,"fast-isnumeric":60}],265:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49457,7 +50146,7 @@ exports.interp = function(arr, n) {
+     return frac * arr[Math.ceil(n)] + (1 - frac) * arr[Math.floor(n)];
+ };
+ 
+-},{"fast-isnumeric":65}],268:[function(require,module,exports){
++},{"fast-isnumeric":60}],268:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49479,7 +50168,7 @@ function str2RgbaArray(color) {
+ 
+ module.exports = str2RgbaArray;
+ 
+-},{"arraytools":8,"tinycolor2":148}],269:[function(require,module,exports){
++},{"arraytools":9,"tinycolor2":157}],269:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49980,7 +50669,7 @@ util.makeEditable = function(context, _delegate, options) {
+     return d3.rebind(this, dispatch, 'on');
+ };
+ 
+-},{"../constants/xmlns_namespaces":247,"../lib":256,"../plotly":276,"d3":62}],270:[function(require,module,exports){
++},{"../constants/xmlns_namespaces":247,"../lib":256,"../plotly":276,"d3":54}],270:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53095,7 +53784,7 @@ function drawMainTitle(gd) {
+     });
+ }
+ 
+-},{"../components/color":176,"../components/drawing":199,"../components/errorbars":205,"../components/images":211,"../components/legend":219,"../components/modebar/manage":223,"../components/rangeselector":230,"../components/rangeslider":235,"../components/shapes":238,"../components/titles":239,"../components/updatemenus":244,"../constants/xmlns_namespaces":247,"../lib":256,"../lib/events":252,"../lib/queue":263,"../plotly":276,"../plots/cartesian/graph_interact":286,"../plots/plots":303,"d3":62,"fast-isnumeric":65,"gl-mat4/fromQuat":78}],271:[function(require,module,exports){
++},{"../components/color":176,"../components/drawing":199,"../components/errorbars":205,"../components/images":211,"../components/legend":219,"../components/modebar/manage":223,"../components/rangeselector":230,"../components/rangeslider":235,"../components/shapes":238,"../components/titles":239,"../components/updatemenus":244,"../constants/xmlns_namespaces":247,"../lib":256,"../lib/events":252,"../lib/queue":263,"../plotly":276,"../plots/cartesian/graph_interact":286,"../plots/plots":303,"d3":54,"fast-isnumeric":60,"gl-mat4/fromQuat":78}],271:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53683,7 +54372,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":256,"../plotly":276,"../snapshot":312,"fast-isnumeric":65}],275:[function(require,module,exports){
++},{"../lib":256,"../plotly":276,"../snapshot":312,"fast-isnumeric":60}],275:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54171,7 +54860,7 @@ exports.PlotSchema = require('./plot_api/plot_schema');
+ // imaging routines
+ exports.Snapshot = require('./snapshot');
+ 
+-},{"../build/plotcss":1,"./components/annotations":174,"./components/color":176,"./components/colorbar":181,"./components/colorscale":190,"./components/drawing":199,"./components/errorbars":205,"./components/images":211,"./components/legend":219,"./components/modebar":222,"./components/shapes":238,"./components/updatemenus":244,"./fonts/mathjax_config":249,"./lib":256,"./lib/queue":263,"./lib/svg_text_utils":269,"./plot_api/plot_api":270,"./plot_api/plot_config":271,"./plot_api/plot_schema":272,"./plots/cartesian/axes":279,"./plots/cartesian/graph_interact":286,"./plots/plots":303,"./plots/polar/micropolar":306,"./snapshot":312,"./traces/scatter":351,"es6-promise":64}],277:[function(require,module,exports){
++},{"../build/plotcss":1,"./components/annotations":174,"./components/color":176,"./components/colorbar":181,"./components/colorscale":190,"./components/drawing":199,"./components/errorbars":205,"./components/images":211,"./components/legend":219,"./components/modebar":222,"./components/shapes":238,"./components/updatemenus":244,"./fonts/mathjax_config":249,"./lib":256,"./lib/queue":263,"./lib/svg_text_utils":269,"./plot_api/plot_api":270,"./plot_api/plot_config":271,"./plot_api/plot_schema":272,"./plots/cartesian/axes":279,"./plots/cartesian/graph_interact":286,"./plots/plots":303,"./plots/polar/micropolar":306,"./snapshot":312,"./traces/scatter":351,"es6-promise":58}],277:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54454,14 +55143,27 @@ axes.getAutoRange = function(ax) {
+     }
+ 
+     if(minmin === maxmax) {
+-        newRange = axReverse ?
+-            [minmin + 1, ax.rangemode !== 'normal' ? 0 : minmin - 1] :
+-            [ax.rangemode !== 'normal' ? 0 : minmin - 1, minmin + 1];
++        var lower = minmin - 1;
++        var upper = minmin + 1;
++        if(ax.rangemode === 'tozero') {
++            newRange = minmin < 0 ? [lower, 0] : [0, upper];
++        }
++        else if(ax.rangemode === 'nonnegative') {
++            newRange = [Math.max(0, lower), Math.max(0, upper)];
++        }
++        else {
++            newRange = [lower, upper];
++        }
+     }
+     else if(mbest) {
+         if(ax.type === 'linear' || ax.type === '-') {
+-            if(ax.rangemode === 'tozero' && minbest.val >= 0) {
+-                minbest = {val: 0, pad: 0};
++            if(ax.rangemode === 'tozero') {
++                if(minbest.val >= 0) {
++                    minbest = {val: 0, pad: 0};
++                }
++                if(maxbest.val <= 0) {
++                    maxbest = {val: 0, pad: 0};
++                }
+             }
+             else if(ax.rangemode === 'nonnegative') {
+                 if(minbest.val - mbest * minbest.pad < 0) {
+@@ -54475,22 +55177,39 @@ axes.getAutoRange = function(ax) {
+             // in case it changed again...
+             mbest = (maxbest.val - minbest.val) /
+                 (ax._length - minbest.pad - maxbest.pad);
++
+         }
+ 
+         newRange = [
+             minbest.val - mbest * minbest.pad,
+             maxbest.val + mbest * maxbest.pad
+         ];
++    }
+ 
+-        // don't let axis have zero size
+-        if(newRange[0] === newRange[1]) {
++    // don't let axis have zero size, while still respecting tozero and nonnegative
++    if(newRange[0] === newRange[1]) {
++        if(ax.rangemode === 'tozero') {
++            if(newRange[0] < 0) {
++                newRange = [newRange[0], 0];
++            }
++            else if(newRange[0] > 0) {
++                newRange = [0, newRange[0]];
++            }
++            else {
++                newRange = [0, 1];
++            }
++        }
++        else {
+             newRange = [newRange[0] - 1, newRange[0] + 1];
++            if(ax.rangemode === 'nonnegative') {
++                newRange[0] = Math.max(0, newRange[0]);
++            }
+         }
++    }
+ 
+-        // maintain reversal
+-        if(axReverse) {
+-            newRange.reverse();
+-        }
++    // maintain reversal
++    if(axReverse) {
++        newRange.reverse();
+     }
+ 
+     return newRange;
+@@ -56273,7 +56992,7 @@ function swapAxisAttrs(layout, key, xFullAxes, yFullAxes) {
+ // rather than built-in % which gives a negative value for negative v
+ function mod(v, d) { return ((v % d) + d) % d; }
+ 
+-},{"../../components/color":176,"../../components/drawing":199,"../../components/titles":239,"../../lib":256,"../../lib/svg_text_utils":269,"../../plotly":276,"./axis_ids":281,"./layout_attributes":288,"./layout_defaults":289,"./set_convert":293,"d3":62,"fast-isnumeric":65}],280:[function(require,module,exports){
++},{"../../components/color":176,"../../components/drawing":199,"../../components/titles":239,"../../lib":256,"../../lib/svg_text_utils":269,"../../plotly":276,"./axis_ids":281,"./layout_attributes":288,"./layout_defaults":289,"./set_convert":293,"d3":54,"fast-isnumeric":60}],280:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56556,7 +57275,7 @@ function category(a) {
+     return curvecats > curvenums * 2;
+ }
+ 
+-},{"../../components/color/attributes":175,"../../lib":256,"../plots":303,"./axis_ids":281,"./category_order_defaults":282,"./clean_datum":283,"./layout_attributes":288,"./ordered_categories":290,"./set_convert":293,"./tick_label_defaults":294,"./tick_mark_defaults":295,"./tick_value_defaults":296,"fast-isnumeric":65,"tinycolor2":148}],281:[function(require,module,exports){
++},{"../../components/color/attributes":175,"../../lib":256,"../plots":303,"./axis_ids":281,"./category_order_defaults":282,"./clean_datum":283,"./layout_attributes":288,"./ordered_categories":290,"./set_convert":293,"./tick_label_defaults":294,"./tick_mark_defaults":295,"./tick_value_defaults":296,"fast-isnumeric":60,"tinycolor2":157}],281:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56750,7 +57469,7 @@ module.exports = function cleanDatum(c) {
+     return c;
+ };
+ 
+-},{"../../lib":256,"fast-isnumeric":65}],284:[function(require,module,exports){
++},{"../../lib":256,"fast-isnumeric":60}],284:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -57517,7 +58236,7 @@ function isSelectOrLasso(dragmode) {
+     return modes.indexOf(dragmode) !== -1;
+ }
+ 
+-},{"../../components/color":176,"../../components/dragelement":197,"../../components/drawing":199,"../../lib":256,"../../lib/setcursor":265,"../../lib/svg_text_utils":269,"../../plotly":276,"./axes":279,"./constants":284,"./select":292,"d3":62,"tinycolor2":148}],286:[function(require,module,exports){
++},{"../../components/color":176,"../../components/dragelement":197,"../../components/drawing":199,"../../lib":256,"../../lib/setcursor":265,"../../lib/svg_text_utils":269,"../../plotly":276,"./axes":279,"./constants":284,"./select":292,"d3":54,"tinycolor2":157}],286:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -58859,7 +59578,7 @@ fx.inbox = function(v0, v1) {
+     return Infinity;
+ };
+ 
+-},{"../../components/color":176,"../../components/dragelement":197,"../../components/drawing":199,"../../lib":256,"../../lib/events":252,"../../lib/svg_text_utils":269,"./axes":279,"./constants":284,"./dragbox":285,"d3":62,"fast-isnumeric":65,"tinycolor2":148}],287:[function(require,module,exports){
++},{"../../components/color":176,"../../components/dragelement":197,"../../components/drawing":199,"../../lib":256,"../../lib/events":252,"../../lib/svg_text_utils":269,"./axes":279,"./constants":284,"./dragbox":285,"d3":54,"fast-isnumeric":60,"tinycolor2":157}],287:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -59543,7 +60262,7 @@ module.exports = function orderedCategories(axisLetter, categoryorder, categorya
+     }
+ };
+ 
+-},{"d3":62}],291:[function(require,module,exports){
++},{"d3":54}],291:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -59608,7 +60327,7 @@ module.exports = function handlePositionDefaults(containerIn, containerOut, coer
+     return containerOut;
+ };
+ 
+-},{"../../lib":256,"fast-isnumeric":65}],292:[function(require,module,exports){
++},{"../../lib":256,"fast-isnumeric":60}],292:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -60052,7 +60771,7 @@ module.exports = function setConvert(ax) {
+     ax._forceTick0 = null;
+ };
+ 
+-},{"../../lib":256,"./axis_ids":281,"./clean_datum":283,"./constants":284,"d3":62,"fast-isnumeric":65}],294:[function(require,module,exports){
++},{"../../lib":256,"./axis_ids":281,"./clean_datum":283,"./constants":284,"d3":54,"fast-isnumeric":60}],294:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -60209,7 +60928,7 @@ module.exports = function handleTickValueDefaults(containerIn, containerOut, coe
+     }
+ };
+ 
+-},{"fast-isnumeric":65}],297:[function(require,module,exports){
++},{"fast-isnumeric":60}],297:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -60395,7 +61114,7 @@ function createCamera(scene) {
+     return result;
+ }
+ 
+-},{"mouse-change":125,"mouse-wheel":129}],299:[function(require,module,exports){
++},{"mouse-change":118,"mouse-wheel":120}],299:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -61299,7 +62018,7 @@ proto.hoverFormatter = function(axisName, val) {
+     return Axes.tickText(axis, axis.c2l(val), 'hover').text;
+ };
+ 
+-},{"../../lib/html2unicode":255,"../../lib/show_no_webgl_msg":266,"../../plots/cartesian/axes":279,"../../plots/cartesian/graph_interact":286,"./camera":298,"./convert":299,"gl-plot2d":85,"gl-select-box":94,"gl-spikes2d":114}],302:[function(require,module,exports){
++},{"../../lib/html2unicode":255,"../../lib/show_no_webgl_msg":266,"../../plots/cartesian/axes":279,"../../plots/cartesian/graph_interact":286,"./camera":298,"./convert":299,"gl-plot2d":85,"gl-select-box":94,"gl-spikes2d":103}],302:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -62655,7 +63374,7 @@ plots.graphJson = function(gd, dataonly, mode, output, useDefaults) {
+     return (output === 'object') ? obj : JSON.stringify(obj);
+ };
+ 
+-},{"../components/color":176,"../lib":256,"../plotly":276,"./attributes":277,"./font_attributes":297,"./layout_attributes":302,"d3":62,"fast-isnumeric":65}],304:[function(require,module,exports){
++},{"../components/color":176,"../lib":256,"../plotly":276,"./attributes":277,"./font_attributes":297,"./layout_attributes":302,"d3":54,"fast-isnumeric":60}],304:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64218,7 +64937,7 @@ var extendDeepAll = Plotly.Lib.extendDeepAll;
+     return exports;
+ };
+ 
+-},{"../../plotly":276,"./micropolar_manager":307,"d3":62}],307:[function(require,module,exports){
++},{"../../plotly":276,"./micropolar_manager":307,"d3":54}],307:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64301,7 +65020,7 @@ manager.fillLayout = function(_gd) {
+     _gd._fullLayout = extendDeepAll(dflts, _gd.layout);
+ };
+ 
+-},{"../../plotly":276,"./undo_manager":308,"d3":62}],308:[function(require,module,exports){
++},{"../../plotly":276,"./undo_manager":308,"d3":54}],308:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64833,7 +65552,7 @@ function svgToImg(opts) {
+ 
+ module.exports = svgToImg;
+ 
+-},{"../lib":256,"events":14}],314:[function(require,module,exports){
++},{"../lib":256,"events":59}],314:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64912,7 +65631,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":256,"../plotly":276,"events":14}],315:[function(require,module,exports){
++},{"../lib":256,"../plotly":276,"events":59}],315:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -65024,7 +65743,7 @@ module.exports = function toSVG(gd, format) {
+     return s;
+ };
+ 
+-},{"../components/color":176,"../components/drawing":199,"../constants/xmlns_namespaces":247,"../lib/svg_text_utils":269,"d3":62}],316:[function(require,module,exports){
++},{"../components/color":176,"../components/drawing":199,"../constants/xmlns_namespaces":247,"../lib/svg_text_utils":269,"d3":54}],316:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -65362,7 +66081,7 @@ module.exports = function makeColorMap(trace) {
+     return colorMap;
+ };
+ 
+-},{"../../components/colorscale/get_scale":188,"d3":62}],321:[function(require,module,exports){
++},{"../../components/colorscale/get_scale":188,"d3":54}],321:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -65576,7 +66295,7 @@ function createContour(scene, fullTrace, calcTrace) {
+ 
+ module.exports = createContour;
+ 
+-},{"../../lib/str2rgbarray":268,"../contour/make_color_map":320,"gl-contour2d":67,"gl-heatmap2d":73}],323:[function(require,module,exports){
++},{"../../lib/str2rgbarray":268,"../contour/make_color_map":320,"gl-contour2d":66,"gl-heatmap2d":73}],323:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66125,7 +66844,7 @@ function iterateInterp2d(z, emptyPoints, overshoot) {
+     return maxFractionalChange;
+ }
+ 
+-},{"../../components/colorscale/calc":183,"../../lib":256,"../../plots/cartesian/axes":279,"../../plots/plots":303,"../histogram2d/calc":338,"./convert_column_xyz":327,"./has_columns":329,"./max_row_length":330,"fast-isnumeric":65}],326:[function(require,module,exports){
++},{"../../components/colorscale/calc":183,"../../lib":256,"../../plots/cartesian/axes":279,"../../plots/plots":303,"../histogram2d/calc":338,"./convert_column_xyz":327,"./has_columns":329,"./max_row_length":330,"fast-isnumeric":60}],326:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66171,7 +66890,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(trace.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":179,"../../components/colorscale/get_scale":188,"../../lib":256,"../../plots/plots":303,"d3":62,"fast-isnumeric":65}],327:[function(require,module,exports){
++},{"../../components/colorbar/draw":179,"../../components/colorscale/get_scale":188,"../../lib":256,"../../plots/plots":303,"d3":54,"fast-isnumeric":60}],327:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66393,7 +67112,7 @@ function isValidZ(z) {
+     return (allRowsAreArrays && oneRowIsFilled && hasOneNumber);
+ }
+ 
+-},{"./has_columns":329,"fast-isnumeric":65}],332:[function(require,module,exports){
++},{"./has_columns":329,"fast-isnumeric":60}],332:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66670,7 +67389,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"fast-isnumeric":65}],337:[function(require,module,exports){
++},{"fast-isnumeric":60}],337:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67313,7 +68032,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":256,"../../plots/cartesian/axes":279,"./colorscale_calc":345,"./subtypes":360,"fast-isnumeric":65}],343:[function(require,module,exports){
++},{"../../lib":256,"../../plots/cartesian/axes":279,"./colorscale_calc":345,"./subtypes":360,"fast-isnumeric":60}],343:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67407,7 +68126,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(marker.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":179,"../../components/colorscale/get_scale":188,"../../lib":256,"../../plots/plots":303,"d3":62,"fast-isnumeric":65}],345:[function(require,module,exports){
++},{"../../components/colorbar/draw":179,"../../components/colorscale/get_scale":188,"../../lib":256,"../../plots/plots":303,"d3":54,"fast-isnumeric":60}],345:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -68101,7 +68820,7 @@ module.exports = function makeBubbleSizeFn(trace) {
+     };
+ };
+ 
+-},{"fast-isnumeric":65}],356:[function(require,module,exports){
++},{"fast-isnumeric":60}],356:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -68454,7 +69173,7 @@ function selectMarkers(gd, plotinfo, cdscatter) {
+     });
+ }
+ 
+-},{"../../components/drawing":199,"../../components/errorbars":205,"../../lib":256,"../../lib/polygon":262,"./arrays_to_calcdata":340,"./line_points":353,"./subtypes":360,"d3":62}],358:[function(require,module,exports){
++},{"../../components/drawing":199,"../../components/errorbars":205,"../../lib":256,"../../lib/polygon":262,"./arrays_to_calcdata":340,"./line_points":353,"./subtypes":360,"d3":54}],358:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -68567,7 +69286,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/drawing":199,"../../components/errorbars":205,"d3":62}],360:[function(require,module,exports){
++},{"../../components/drawing":199,"../../components/errorbars":205,"d3":54}],360:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -69372,7 +70091,7 @@ function createLineWithMarkers(scene, data) {
+ 
+ module.exports = createLineWithMarkers;
+ 
+-},{"../../components/errorbars":205,"../../constants/gl2d_dashes":245,"../../constants/gl_markers":246,"../../lib":256,"../../lib/gl_format_color":254,"../../lib/str2rgbarray":268,"../../plots/cartesian/axes":279,"../scatter/get_trace_color":349,"../scatter/make_bubble_size_func":355,"../scatter/subtypes":360,"fast-isnumeric":65,"gl-error2d":70,"gl-line2d":77,"gl-scatter2d":92,"gl-scatter2d-fancy":87}],366:[function(require,module,exports){
++},{"../../components/errorbars":205,"../../constants/gl2d_dashes":245,"../../constants/gl_markers":246,"../../lib":256,"../../lib/gl_format_color":254,"../../lib/str2rgbarray":268,"../../plots/cartesian/axes":279,"../scatter/get_trace_color":349,"../scatter/make_bubble_size_func":355,"../scatter/subtypes":360,"fast-isnumeric":60,"gl-error2d":69,"gl-line2d":77,"gl-scatter2d":92,"gl-scatter2d-fancy":87}],366:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+diff --git a/dist/plotly-gl2d.min.js b/dist/plotly-gl2d.min.js
+index 7d78c53..3aadb66 100644
+--- a/dist/plotly-gl2d.min.js
++++ b/dist/plotly-gl2d.min.js
+@@ -4,31 +4,31 @@
+ * All rights reserved.
+ * Licensed under the MIT license
+ */
+-!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var e;e="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,e.Plotly=t()}}(function(){var t;return function e(t,r,n){function i(o,s){if(!r[o]){if(!t[o]){var l="function"==typeof require&&require;if(!s&&l)return l(o,!0);if(a)return a(o,!0);var u=new Error("Cannot find module '"+o+"'");throw u.code="MODULE_NOT_FOUND",u}var c=r[o]={exports:{}};t[o][0].call(c.exports,function(e){var r=t[o][1][e];return i(r?r:e)},c,c.exports,e,t,r,n)}return r[o].exports}for(var a="function"==typeof require&&require,o=0;o<n.length;o++)i(n[o]);return i}({1:[function(t,e,r){"use strict";var n=t("../src/plotly"),i={"X,X div":"font-family:'Open Sans', verdana, arial, sans-serif;margin:0;padding:0;","X input,X button":"font-family:'Open Sans', verdana, arial, sans-serif;","X input:focus,X 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s=t[i]|t[i+1]<<8|t[i+2]<<16;this.words[o]|=s<<a&67108863,this.words[o+1]=s>>>26-a&67108863,a+=24,a>=26&&(a-=26,o++)}return this.strip()},i.prototype._parseHex=function(t,e){this.length=Math.ceil((t.length-e)/6),this.words=new Array(this.length);for(var r=0;r<this.length;r++)this.words[r]=0;for(var n=0,r=t.length-6,i=0;r>=e;r-=6){var o=a(t,r,r+6);this.words[i]|=o<<n&67108863,this.words[i+1]|=o>>>26-n&4194303,n+=24,n>=26&&(n-=26,i++)}if(r+6!==e){var o=a(t,e,r+6);this.words[i]|=o<<n&67108863,this.words[i+1]|=o>>>26-n&4194303}this.strip()},i.prototype._parseBase=function(t,e,r){this.words=[0],this.length=1;for(var n=0,i=1;67108863>=i;i*=e)n++;n--,i=i/e|0;for(var a=t.length-r,s=a%n,l=Math.min(a,a-s)+r,u=0,c=r;l>c;c+=n)u=o(t,c,c+n,e),this.imuln(i),this.words[0]+u<67108864?this.words[0]+=u:this._iaddn(u);if(0!==s){for(var f=1,u=o(t,c,t.length,e),c=0;s>c;c++)f*=e;this.imuln(f),this.words[0]+u<67108864?this.words[0]+=u:this._iaddn(u)}},i.prototype.copy=function(t){t.words=new Array(this.length);for(var e=0;e<this.length;e++)t.words[e]=this.words[e];t.length=this.length,t.sign=this.sign,t.red=this.red},i.prototype.clone=function(){var t=new i(null);return this.copy(t),t},i.prototype.strip=function(){for(;this.length>1&&0===this.words[this.length-1];)this.length--;return this._normSign()},i.prototype._normSign=function(){return 1===this.length&&0===this.words[0]&&(this.sign=!1),this},i.prototype.inspect=function(){return(this.red?"<BN-R: ":"<BN: ")+this.toString(16)+">"};var p=["","0","00","000","0000","00000","000000","0000000","00000000","000000000","0000000000","00000000000","000000000000","0000000000000","00000000000000","000000000000000","0000000000000000","00000000000000000","000000000000000000","0000000000000000000","00000000000000000000","000000000000000000000","0000000000000000000000","00000000000000000000000","000000000000000000000000","0000000000000000000000000"],g=[0,0,25,16,12,11,10,9,8,8,7,7,7,7,6,6,6,6,6,6,6,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5],v=[0,0,33554432,43046721,16777216,48828125,60466176,40353607,16777216,43046721,1e7,19487171,35831808,62748517,7529536,11390625,16777216,24137569,34012224,47045881,64e6,4084101,5153632,6436343,7962624,9765625,11881376,14348907,17210368,20511149,243e5,28629151,33554432,39135393,45435424,52521875,60466176];i.prototype.toString=function(t,e){if(t=t||10,16===t||"hex"===t){for(var n="",i=0,e=0|e||1,a=0,o=0;o<this.length;o++){var s=this.words[o],l=(16777215&(s<<i|a)).toString(16);a=s>>>24-i&16777215,n=0!==a||o!==this.length-1?p[6-l.length]+l+n:l+n,i+=2,i>=26&&(i-=26,o--)}for(0!==a&&(n=a.toString(16)+n);n.length%e!==0;)n="0"+n;return this.sign&&(n="-"+n),n}if(t===(0|t)&&t>=2&&36>=t){var u=g[t],c=v[t],n="",f=this.clone();for(f.sign=!1;0!==f.cmpn(0);){var h=f.modn(c).toString(t);f=f.idivn(c),n=0!==f.cmpn(0)?p[u-h.length]+h+n:h+n}return 0===this.cmpn(0)&&(n="0"+n),this.sign&&(n="-"+n),n}r(!1,"Base should be between 2 and 36")},i.prototype.toJSON=function(){return this.toString(16)},i.prototype.toArray=function(t){this.strip();var e=new Array(this.byteLength());e[0]=0;var r=this.clone();if("le"!==t)for(var n=0;0!==r.cmpn(0);n++){var i=r.andln(255);r.ishrn(8),e[e.length-n-1]=i}else for(var n=0;0!==r.cmpn(0);n++){var i=r.andln(255);r.ishrn(8),e[n]=i}return e},Math.clz32?i.prototype._countBits=function(t){return 32-Math.clz32(t)}:i.prototype._countBits=function(t){var e=t,r=0;return e>=4096&&(r+=13,e>>>=13),e>=64&&(r+=7,e>>>=7),e>=8&&(r+=4,e>>>=4),e>=2&&(r+=2,e>>>=2),r+e},i.prototype._zeroBits=function(t){if(0===t)return 26;var e=t,r=0;return 0===(8191&e)&&(r+=13,e>>>=13),0===(127&e)&&(r+=7,e>>>=7),0===(15&e)&&(r+=4,e>>>=4),0===(3&e)&&(r+=2,e>>>=2),0===(1&e)&&r++,r},i.prototype.bitLength=function(){var t=0,e=this.words[this.length-1],t=this._countBits(e);return 26*(this.length-1)+t},i.prototype.zeroBits=function(){if(0===this.cmpn(0))return 0;for(var t=0,e=0;e<this.length;e++){var r=this._zeroBits(this.words[e]);if(t+=r,26!==r)break}return t},i.prototype.byteLength=function(){return Math.ceil(this.bitLength()/8)},i.prototype.neg=function(){if(0===this.cmpn(0))return this.clone();var t=this.clone();return t.sign=!this.sign,t},i.prototype.ior=function(t){for(this.sign=this.sign||t.sign;this.length<t.length;)this.words[this.length++]=0;for(var e=0;e<t.length;e++)this.words[e]=this.words[e]|t.words[e];return this.strip()},i.prototype.or=function(t){return this.length>t.length?this.clone().ior(t):t.clone().ior(this)},i.prototype.iand=function(t){this.sign=this.sign&&t.sign;var e;e=this.length>t.length?t:this;for(var r=0;r<e.length;r++)this.words[r]=this.words[r]&t.words[r];return this.length=e.length,this.strip()},i.prototype.and=function(t){return this.length>t.length?this.clone().iand(t):t.clone().iand(this)},i.prototype.ixor=function(t){this.sign=this.sign||t.sign;var e,r;this.length>t.length?(e=this,r=t):(e=t,r=this);for(var n=0;n<r.length;n++)this.words[n]=e.words[n]^r.words[n];
+-if(this!==e)for(;n<e.length;n++)this.words[n]=e.words[n];return this.length=e.length,this.strip()},i.prototype.xor=function(t){return this.length>t.length?this.clone().ixor(t):t.clone().ixor(this)},i.prototype.setn=function(t,e){r("number"==typeof t&&t>=0);for(var n=t/26|0,i=t%26;this.length<=n;)this.words[this.length++]=0;return e?this.words[n]=this.words[n]|1<<i:this.words[n]=this.words[n]&~(1<<i),this.strip()},i.prototype.iadd=function(t){if(this.sign&&!t.sign){this.sign=!1;var e=this.isub(t);return this.sign=!this.sign,this._normSign()}if(!this.sign&&t.sign){t.sign=!1;var e=this.isub(t);return t.sign=!0,e._normSign()}var r,n;this.length>t.length?(r=this,n=t):(r=t,n=this);for(var i=0,a=0;a<n.length;a++){var e=r.words[a]+n.words[a]+i;this.words[a]=67108863&e,i=e>>>26}for(;0!==i&&a<r.length;a++){var e=r.words[a]+i;this.words[a]=67108863&e,i=e>>>26}if(this.length=r.length,0!==i)this.words[this.length]=i,this.length++;else if(r!==this)for(;a<r.length;a++)this.words[a]=r.words[a];return this},i.prototype.add=function(t){if(t.sign&&!this.sign){t.sign=!1;var e=this.sub(t);return t.sign=!0,e}if(!t.sign&&this.sign){this.sign=!1;var e=t.sub(this);return this.sign=!0,e}return this.length>t.length?this.clone().iadd(t):t.clone().iadd(this)},i.prototype.isub=function(t){if(t.sign){t.sign=!1;var e=this.iadd(t);return t.sign=!0,e._normSign()}if(this.sign)return this.sign=!1,this.iadd(t),this.sign=!0,this._normSign();var r=this.cmp(t);if(0===r)return this.sign=!1,this.length=1,this.words[0]=0,this;var n,i;r>0?(n=this,i=t):(n=t,i=this);for(var a=0,o=0;o<i.length;o++){var e=n.words[o]-i.words[o]+a;a=e>>26,this.words[o]=67108863&e}for(;0!==a&&o<n.length;o++){var e=n.words[o]+a;a=e>>26,this.words[o]=67108863&e}if(0===a&&o<n.length&&n!==this)for(;o<n.length;o++)this.words[o]=n.words[o];return this.length=Math.max(this.length,o),n!==this&&(this.sign=!0),this.strip()},i.prototype.sub=function(t){return this.clone().isub(t)},i.prototype._smallMulTo=function(t,e){e.sign=t.sign!==this.sign,e.length=this.length+t.length;for(var r=0,n=0;n<e.length-1;n++){for(var i=r>>>26,a=67108863&r,o=Math.min(n,t.length-1),s=Math.max(0,n-this.length+1);o>=s;s++){var l=n-s,u=0|this.words[l],c=0|t.words[s],f=u*c,h=67108863&f;i=i+(f/67108864|0)|0,h=h+a|0,a=67108863&h,i=i+(h>>>26)|0}e.words[n]=a,r=i}return 0!==r?e.words[n]=r:e.length--,e.strip()},i.prototype._bigMulTo=function(t,e){e.sign=t.sign!==this.sign,e.length=this.length+t.length;for(var r=0,n=0,i=0;i<e.length-1;i++){var a=n;n=0;for(var o=67108863&r,s=Math.min(i,t.length-1),l=Math.max(0,i-this.length+1);s>=l;l++){var u=i-l,c=0|this.words[u],f=0|t.words[l],h=c*f,d=67108863&h;a=a+(h/67108864|0)|0,d=d+o|0,o=67108863&d,a=a+(d>>>26)|0,n+=a>>>26,a&=67108863}e.words[i]=o,r=a,a=n}return 0!==r?e.words[i]=r:e.length--,e.strip()},i.prototype.mulTo=function(t,e){var r;return r=this.length+t.length<63?this._smallMulTo(t,e):this._bigMulTo(t,e)},i.prototype.mul=function(t){var e=new i(null);return e.words=new Array(this.length+t.length),this.mulTo(t,e)},i.prototype.imul=function(t){if(0===this.cmpn(0)||0===t.cmpn(0))return this.words[0]=0,this.length=1,this;var e=this.length,r=t.length;this.sign=t.sign!==this.sign,this.length=this.length+t.length,this.words[this.length-1]=0;for(var n=this.length-2;n>=0;n--){for(var i=0,a=0,o=Math.min(n,r-1),s=Math.max(0,n-e+1);o>=s;s++){var l=n-s,u=this.words[l],c=t.words[s],f=u*c,h=67108863&f;i+=f/67108864|0,h+=a,a=67108863&h,i+=h>>>26}this.words[n]=a,this.words[n+1]+=i,i=0}for(var i=0,l=1;l<this.length;l++){var d=this.words[l]+i;this.words[l]=67108863&d,i=d>>>26}return this.strip()},i.prototype.imuln=function(t){r("number"==typeof t);for(var e=0,n=0;n<this.length;n++){var i=this.words[n]*t,a=(67108863&i)+(67108863&e);e>>=26,e+=i/67108864|0,e+=a>>>26,this.words[n]=67108863&a}return 0!==e&&(this.words[n]=e,this.length++),this},i.prototype.muln=function(t){return this.clone().imuln(t)},i.prototype.sqr=function(){return this.mul(this)},i.prototype.isqr=function(){return this.mul(this)},i.prototype.ishln=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=67108863>>>26-e<<26-e;if(0!==e){for(var a=0,o=0;o<this.length;o++){var s=this.words[o]&i,l=this.words[o]-s<<e;this.words[o]=l|a,a=s>>>26-e}a&&(this.words[o]=a,this.length++)}if(0!==n){for(var o=this.length-1;o>=0;o--)this.words[o+n]=this.words[o];for(var o=0;n>o;o++)this.words[o]=0;this.length+=n}return this.strip()},i.prototype.ishrn=function(t,e,n){r("number"==typeof t&&t>=0);var i;i=e?(e-e%26)/26:0;var a=t%26,o=Math.min((t-a)/26,this.length),s=67108863^67108863>>>a<<a,l=n;if(i-=o,i=Math.max(0,i),l){for(var u=0;o>u;u++)l.words[u]=this.words[u];l.length=o}if(0===o);else if(this.length>o){this.length-=o;for(var u=0;u<this.length;u++)this.words[u]=this.words[u+o]}else this.words[0]=0,this.length=1;for(var c=0,u=this.length-1;u>=0&&(0!==c||u>=i);u--){var f=this.words[u];this.words[u]=c<<26-a|f>>>a,c=f&s}return l&&0!==c&&(l.words[l.length++]=c),0===this.length&&(this.words[0]=0,this.length=1),this.strip(),this},i.prototype.shln=function(t){return this.clone().ishln(t)},i.prototype.shrn=function(t){return this.clone().ishrn(t)},i.prototype.testn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n)return!1;var a=this.words[n];return!!(a&i)},i.prototype.imaskn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26;if(r(!this.sign,"imaskn works only with positive numbers"),0!==e&&n++,this.length=Math.min(n,this.length),0!==e){var i=67108863^67108863>>>e<<e;this.words[this.length-1]&=i}return this.strip()},i.prototype.maskn=function(t){return this.clone().imaskn(t)},i.prototype.iaddn=function(t){return r("number"==typeof t),0>t?this.isubn(-t):this.sign?1===this.length&&this.words[0]<t?(this.words[0]=t-this.words[0],this.sign=!1,this):(this.sign=!1,this.isubn(t),this.sign=!0,this):this._iaddn(t)},i.prototype._iaddn=function(t){this.words[0]+=t;for(var e=0;e<this.length&&this.words[e]>=67108864;e++)this.words[e]-=67108864,e===this.length-1?this.words[e+1]=1:this.words[e+1]++;return this.length=Math.max(this.length,e+1),this},i.prototype.isubn=function(t){if(r("number"==typeof t),0>t)return this.iaddn(-t);if(this.sign)return this.sign=!1,this.iaddn(t),this.sign=!0,this;this.words[0]-=t;for(var e=0;e<this.length&&this.words[e]<0;e++)this.words[e]+=67108864,this.words[e+1]-=1;return this.strip()},i.prototype.addn=function(t){return this.clone().iaddn(t)},i.prototype.subn=function(t){return this.clone().isubn(t)},i.prototype.iabs=function(){return this.sign=!1,this},i.prototype.abs=function(){return this.clone().iabs()},i.prototype._ishlnsubmul=function(t,e,n){var i,a=t.length+n;if(this.words.length<a){for(var o=new Array(a),i=0;i<this.length;i++)o[i]=this.words[i];this.words=o}else i=this.length;for(this.length=Math.max(this.length,a);i<this.length;i++)this.words[i]=0;for(var s=0,i=0;i<t.length;i++){var l=this.words[i+n]+s,u=t.words[i]*e;l-=67108863&u,s=(l>>26)-(u/67108864|0),this.words[i+n]=67108863&l}for(;i<this.length-n;i++){var l=this.words[i+n]+s;s=l>>26,this.words[i+n]=67108863&l}if(0===s)return this.strip();r(-1===s),s=0;for(var i=0;i<this.length;i++){var l=-this.words[i]+s;s=l>>26,this.words[i]=67108863&l}return this.sign=!0,this.strip()},i.prototype._wordDiv=function(t,e){var r=this.length-t.length,n=this.clone(),a=t,o=a.words[a.length-1],s=this._countBits(o);r=26-s,0!==r&&(a=a.shln(r),n.ishln(r),o=a.words[a.length-1]);var l,u=n.length-a.length;if("mod"!==e){l=new i(null),l.length=u+1,l.words=new Array(l.length);for(var c=0;c<l.length;c++)l.words[c]=0}var f=n.clone()._ishlnsubmul(a,1,u);f.sign||(n=f,l&&(l.words[u]=1));for(var h=u-1;h>=0;h--){var d=67108864*n.words[a.length+h]+n.words[a.length+h-1];for(d=Math.min(d/o|0,67108863),n._ishlnsubmul(a,d,h);n.sign;)d--,n.sign=!1,n._ishlnsubmul(a,1,h),0!==n.cmpn(0)&&(n.sign=!n.sign);l&&(l.words[h]=d)}return l&&l.strip(),n.strip(),"div"!==e&&0!==r&&n.ishrn(r),{div:l?l:null,mod:n}},i.prototype.divmod=function(t,e){if(r(0!==t.cmpn(0)),this.sign&&!t.sign){var n,a,o=this.neg().divmod(t,e);return"mod"!==e&&(n=o.div.neg()),"div"!==e&&(a=0===o.mod.cmpn(0)?o.mod:t.sub(o.mod)),{div:n,mod:a}}if(!this.sign&&t.sign){var n,o=this.divmod(t.neg(),e);return"mod"!==e&&(n=o.div.neg()),{div:n,mod:o.mod}}return this.sign&&t.sign?this.neg().divmod(t.neg(),e):t.length>this.length||this.cmp(t)<0?{div:new i(0),mod:this}:1===t.length?"div"===e?{div:this.divn(t.words[0]),mod:null}:"mod"===e?{div:null,mod:new i(this.modn(t.words[0]))}:{div:this.divn(t.words[0]),mod:new i(this.modn(t.words[0]))}:this._wordDiv(t,e)},i.prototype.div=function(t){return this.divmod(t,"div").div},i.prototype.mod=function(t){return this.divmod(t,"mod").mod},i.prototype.divRound=function(t){var e=this.divmod(t);if(0===e.mod.cmpn(0))return e.div;var r=e.div.sign?e.mod.isub(t):e.mod,n=t.shrn(1),i=t.andln(1),a=r.cmp(n);return 0>a||1===i&&0===a?e.div:e.div.sign?e.div.isubn(1):e.div.iaddn(1)},i.prototype.modn=function(t){r(67108863>=t);for(var e=(1<<26)%t,n=0,i=this.length-1;i>=0;i--)n=(e*n+this.words[i])%t;return n},i.prototype.idivn=function(t){r(67108863>=t);for(var e=0,n=this.length-1;n>=0;n--){var i=this.words[n]+67108864*e;this.words[n]=i/t|0,e=i%t}return this.strip()},i.prototype.divn=function(t){return this.clone().idivn(t)},i.prototype.egcd=function(t){r(!t.sign),r(0!==t.cmpn(0));var e=this,n=t.clone();e=e.sign?e.mod(t):e.clone();for(var a=new i(1),o=new i(0),s=new i(0),l=new i(1),u=0;e.isEven()&&n.isEven();)e.ishrn(1),n.ishrn(1),++u;for(var c=n.clone(),f=e.clone();0!==e.cmpn(0);){for(;e.isEven();)e.ishrn(1),a.isEven()&&o.isEven()?(a.ishrn(1),o.ishrn(1)):(a.iadd(c).ishrn(1),o.isub(f).ishrn(1));for(;n.isEven();)n.ishrn(1),s.isEven()&&l.isEven()?(s.ishrn(1),l.ishrn(1)):(s.iadd(c).ishrn(1),l.isub(f).ishrn(1));e.cmp(n)>=0?(e.isub(n),a.isub(s),o.isub(l)):(n.isub(e),s.isub(a),l.isub(o))}return{a:s,b:l,gcd:n.ishln(u)}},i.prototype._invmp=function(t){r(!t.sign),r(0!==t.cmpn(0));var e=this,n=t.clone();e=e.sign?e.mod(t):e.clone();for(var a=new i(1),o=new i(0),s=n.clone();e.cmpn(1)>0&&n.cmpn(1)>0;){for(;e.isEven();)e.ishrn(1),a.isEven()?a.ishrn(1):a.iadd(s).ishrn(1);for(;n.isEven();)n.ishrn(1),o.isEven()?o.ishrn(1):o.iadd(s).ishrn(1);e.cmp(n)>=0?(e.isub(n),a.isub(o)):(n.isub(e),o.isub(a))}return 0===e.cmpn(1)?a:o},i.prototype.gcd=function(t){if(0===this.cmpn(0))return t.clone();if(0===t.cmpn(0))return this.clone();var e=this.clone(),r=t.clone();e.sign=!1,r.sign=!1;for(var n=0;e.isEven()&&r.isEven();n++)e.ishrn(1),r.ishrn(1);for(;;){for(;e.isEven();)e.ishrn(1);for(;r.isEven();)r.ishrn(1);var i=e.cmp(r);if(0>i){var a=e;e=r,r=a}else if(0===i||0===r.cmpn(1))break;e.isub(r)}return r.ishln(n)},i.prototype.invm=function(t){return this.egcd(t).a.mod(t)},i.prototype.isEven=function(){return 0===(1&this.words[0])},i.prototype.isOdd=function(){return 1===(1&this.words[0])},i.prototype.andln=function(t){return this.words[0]&t},i.prototype.bincn=function(t){r("number"==typeof t);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n){for(var a=this.length;n+1>a;a++)this.words[a]=0;return this.words[n]|=i,this.length=n+1,this}for(var o=i,a=n;0!==o&&a<this.length;a++){var s=this.words[a];s+=o,o=s>>>26,s&=67108863,this.words[a]=s}return 0!==o&&(this.words[a]=o,this.length++),this},i.prototype.cmpn=function(t){var e=0>t;if(e&&(t=-t),this.sign&&!e)return-1;if(!this.sign&&e)return 1;t&=67108863,this.strip();var r;if(this.length>1)r=1;else{var n=this.words[0];r=n===t?0:t>n?-1:1}return this.sign&&(r=-r),r},i.prototype.cmp=function(t){if(this.sign&&!t.sign)return-1;if(!this.sign&&t.sign)return 1;var e=this.ucmp(t);return this.sign?-e:e},i.prototype.ucmp=function(t){if(this.length>t.length)return 1;if(this.length<t.length)return-1;for(var e=0,r=this.length-1;r>=0;r--){var n=this.words[r],i=t.words[r];if(n!==i){i>n?e=-1:n>i&&(e=1);break}}return e},i.red=function(t){return new h(t)},i.prototype.toRed=function(t){return r(!this.red,"Already a number in reduction context"),r(!this.sign,"red works only with positives"),t.convertTo(this)._forceRed(t)},i.prototype.fromRed=function(){return r(this.red,"fromRed works only with numbers in reduction context"),this.red.convertFrom(this)},i.prototype._forceRed=function(t){return this.red=t,this},i.prototype.forceRed=function(t){return r(!this.red,"Already a number in reduction context"),this._forceRed(t)},i.prototype.redAdd=function(t){return r(this.red,"redAdd works only with red 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g=d,v=0;0!==g.cmp(l);v++)g=g.redSqr();r(p>v);var m=this.pow(h,new i(1).ishln(p-v-1));a=a.redMul(m),h=m.redSqr(),d=d.redMul(h),p=v}return a},h.prototype.invm=function(t){var e=t._invmp(this.m);return e.sign?(e.sign=!1,this.imod(e).redNeg()):this.imod(e)},h.prototype.pow=function(t,e){var r=[];if(0===e.cmpn(0))return new i(1);for(var n=e.clone();0!==n.cmpn(0);)r.push(n.andln(1)),n.ishrn(1);for(var a=t,o=0;o<r.length&&0===r[o];o++,a=this.sqr(a));if(++o<r.length)for(var n=this.sqr(a);o<r.length;o++,n=this.sqr(n))0!==r[o]&&(a=this.mul(a,n));return a},h.prototype.convertTo=function(t){var e=t.mod(this.m);return e===t?e.clone():e},h.prototype.convertFrom=function(t){var e=t.clone();return e.red=null,e},i.mont=function(t){return new d(t)},n(d,h),d.prototype.convertTo=function(t){return this.imod(t.shln(this.shift))},d.prototype.convertFrom=function(t){var e=this.imod(t.mul(this.rinv));return e.red=null,e},d.prototype.imul=function(t,e){if(0===t.cmpn(0)||0===e.cmpn(0))return 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s=l.malloc(t.size,r),h=c(s,t.shape);u.assign(h,t),0>e?this.length=i(this.gl,this.type,this.length,this.usage,s,e):this.length=i(this.gl,this.type,this.length,this.usage,s.subarray(0,t.size),e),l.free(s)}}else if(Array.isArray(t)){var d;d=this.type===this.gl.ELEMENT_ARRAY_BUFFER?a(t,"uint16"):a(t,"float32"),0>e?this.length=i(this.gl,this.type,this.length,this.usage,d,e):this.length=i(this.gl,this.type,this.length,this.usage,d.subarray(0,t.length),e),l.free(d)}else if("object"==typeof t&&"number"==typeof t.length)this.length=i(this.gl,this.type,this.length,this.usage,t,e);else{if("number"!=typeof t&&void 0!==t)throw new Error("gl-buffer: Invalid data type");if(e>=0)throw new Error("gl-buffer: Cannot specify offset when resizing buffer");t=0|t,0>=t&&(t=1),this.gl.bufferData(this.type,0|t,this.usage),this.length=t}},e.exports=s},{ndarray:131,"ndarray-ops":130,"typedarray-pool":151}],67:[function(t,e,r){"use strict";function n(t,e,r,n,i,a,o,s,l){this.plot=t,this.shader=e,this.fillShader=r,this.pickShader=n,this.positionBuffer=i,this.colorBuffer=a,this.idBuffer=o,this.fillPositionBuffer=s,this.fillColorBuffer=l,this.fillVerts=0,this.xData=[],this.yData=[],this.shape=[0,0],this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.pickOffset=0,this.numVertices=0,this.lineWidth=1}function i(t,e){var r=Math.floor(e);if(0>r)return t[0];if(r>=t.length-1)return t[t.length-1];var n=e-r;return(1-n)*t[r]+n*t[r+1]}function a(t,e){var r=t.gl,i=s(r,p.vertex,p.fragment),a=s(r,p.pickVertex,p.pickFragment),o=s(r,p.fillVertex,p.fragment),u=l(r),c=l(r),f=l(r),h=l(r),d=l(r),g=new n(t,i,o,a,u,c,f,h,d);return g.update(e),t.addObject(g),g}e.exports=a;var o=t("iota-array"),s=t("gl-shader"),l=t("gl-buffer"),u=t("ndarray"),c=t("surface-nets"),f=t("cdt2d"),h=t("clean-pslg"),d=t("binary-search-bounds"),p=t("./lib/shaders"),g=n.prototype,v=[1,0,0,0,0,1,1,0,1,1,0,1];g.draw=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0];return function(){var 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q,H=V[0],G=V[1],X=A.get(Math.floor(H),Math.floor(G)),Y=A.get(Math.floor(H),Math.ceil(G)),W=A.get(Math.ceil(H),Math.floor(G)),Z=A.get(Math.ceil(H),Math.ceil(G));0===Math.floor(V[0])&&C>=X!=C>Y?q=[0,e(C,V[1],X,Y)]:Math.ceil(V[0])===r[0]-1&&C>=W!=C>Z?q=[r[0]-1,e(C,V[1],W,Z)]:0===Math.floor(V[1])&&C>=X!=C>W?q=[e(C,V[0],X,W),0]:Math.ceil(V[1])===r[1]-1&&C>=Y!=C>Z&&(q=[e(C,V[0],Y,Z),r[1]-1]),q&&(z.push([B,D.length]),F.push(L.length),D.push(q))}}}for(B=0;B<z.length;++B){var Q=z[B],$=D[Q[0]],K=D[Q[1]];T.push([F[Q[0]],F[Q[1]]]);var J=Math.round($[0])+r[0]*Math.round($[1]),tt=i(n,$[0]),et=i(a,$[1]),rt=i(n,K[0]),nt=i(a,K[1]);tt=_*(tt-m),et=w*(et-y),rt=_*(rt-m),nt=w*(nt-y);for(var it=tt-rt,at=et-nt,ot=0;ot<v.length;ot+=2){var st=v[ot],lt=1-st,ut=2*v[ot+1]-1;k.push(lt*tt+st*rt,lt*et+st*nt,ut*it,ut*at),M.push(I,P,O,N),E.push(J)}}}}this.positionBuffer.update(new Float32Array(k)),this.colorBuffer.update(new Uint8Array(M)),this.idBuffer.update(new Uint32Array(E)),this.numVertices=E.length;var ct=t.fillColors,ft=[],ht=[],dt=0;if(ct){h(L,T);var pt=f(L,T,{delaunay:!1});for(S=0;S<pt.length;++S){var gt=pt[S],vt=0,mt=0;for(B=0;3>B;++B){var yt=L[gt[B]],bt=i(n,yt[0]),xt=i(a,yt[1]);vt+=yt[0],mt+=yt[1],ht.push(_*(bt-m),w*(xt-y))}vt/=3,mt/=3;var _t=Math.floor(vt),wt=Math.floor(mt),At=vt-_t,kt=mt-wt,Mt=A.get(_t,wt),Et=A.get(_t,wt+1),Tt=A.get(_t+1,wt),Lt=A.get(_t+1,wt+1),St=(1-kt)*((1-At)*Mt+At*Tt)+kt*((1-At)*Et+At*Lt),Ct=d.le(l,St)+1,Rt=255*ct[4*Ct+0]|0,It=255*ct[4*Ct+1]|0,Pt=255*ct[4*Ct+2]|0,Ot=255*ct[4*Ct+3]|0;ft.push(Rt,It,Pt,Ot,Rt,It,Pt,Ot,Rt,It,Pt,Ot),dt+=3}this.fillPositionBuffer.update(new Float32Array(ht)),this.fillColorBuffer.update(new Uint8Array(ft)),this.fillVerts=dt}},g.dispose=function(){this.plot.removeObject(this)}},{"./lib/shaders":68,"binary-search-bounds":69,cdt2d:16,"clean-pslg":23,"gl-buffer":66,"gl-shader":96,"iota-array":123,ndarray:131,"surface-nets":146}],68:[function(t,e,r){"use strict";e.exports={fragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 tangent;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 screenShape;\nuniform float lineWidth;\nuniform float pointSize;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  fragColor = color;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  vec2 vTangent = normalize(viewTransform * vec3(tangent, 0)).xy;\n  vec2 offset = vec2(vTangent.y, -vTangent.x) / screenShape;\n\n  gl_Position = vec4(\n    vPosition.xy + offset * lineWidth * vPosition.z,\n    0,\n    vPosition.z);\n\n  gl_PointSize = pointSize;\n}\n",pickFragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragId;\nvoid main() {\n  gl_FragColor = fragId;\n}\n",pickVertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 viewTransform;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id / 255.0;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n",fillVertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  fragColor = color;\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n"}},{}],69:[function(t,e,r){arguments[4][21][0].apply(r,arguments)},{dup:21}],70:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.shader=e,this.buffer=r,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.numPoints=0,this.color=[0,0,0,1]}function i(t,e){var r=a(t.gl,l.vertex,l.fragment),i=o(t.gl),s=new n(t,r,i);return s.update(e),t.addObject(s),s}var a=t("gl-shader"),o=t("gl-buffer"),s=t("typedarray-pool"),l=t("./lib/shaders");e.exports=i;var u=[[1,0,0,1,0,0],[1,0,0,-1,0,0],[-1,0,0,-1,0,0],[-1,0,0,-1,0,0],[-1,0,0,1,0,0],[1,0,0,1,0,0],[1,0,-1,0,0,1],[1,0,-1,0,0,-1],[1,0,1,0,0,-1],[1,0,1,0,0,-1],[1,0,1,0,0,1],[1,0,-1,0,0,1],[-1,0,-1,0,0,1],[-1,0,-1,0,0,-1],[-1,0,1,0,0,-1],[-1,0,1,0,0,-1],[-1,0,1,0,0,1],[-1,0,-1,0,0,1],[0,1,1,0,0,0],[0,1,-1,0,0,0],[0,-1,-1,0,0,0],[0,-1,-1,0,0,0],[0,1,1,0,0,0],[0,-1,1,0,0,0],[0,1,0,-1,1,0],[0,1,0,-1,-1,0],[0,1,0,1,-1,0],[0,1,0,1,1,0],[0,1,0,-1,1,0],[0,1,0,1,-1,0],[0,-1,0,-1,1,0],[0,-1,0,-1,-1,0],[0,-1,0,1,-1,0],[0,-1,0,1,1,0],[0,-1,0,-1,1,0],[0,-1,0,1,-1,0]],c=n.prototype;c.draw=function(){var t=[1,0,0,0,1,0,0,0,1],e=[1,1];return function(){var r=this.plot,n=this.shader,i=this.buffer,a=this.bounds,o=this.numPoints;if(o){var s=r.gl,l=r.dataBox,c=r.viewBox,f=r.pixelRatio,h=a[2]-a[0],d=a[3]-a[1],p=l[2]-l[0],g=l[3]-l[1];t[0]=2*h/p,t[4]=2*d/g,t[6]=2*(a[0]-l[0])/p-1,t[7]=2*(a[1]-l[1])/g-1;var v=c[2]-c[0],m=c[3]-c[1];e[0]=2*f/v,e[1]=2*f/m,i.bind(),n.bind(),n.uniforms.viewTransform=t,n.uniforms.pixelScale=e,n.uniforms.color=this.color,n.attributes.position.pointer(s.FLOAT,!1,16,0),n.attributes.pixelOffset.pointer(s.FLOAT,!1,16,8),s.drawArrays(s.TRIANGLES,0,o*u.length)}}}(),c.drawPick=function(t){return t},c.pick=function(t,e){return null},c.update=function(t){t=t||{};var e,r,n,i=t.positions||[],a=t.errors||[],o=1;"lineWidth"in t&&(o=+t.lineWidth);var l=5;"capSize"in t&&(l=+t.capSize),this.color=(t.color||[0,0,0,1]).slice();var c=this.bounds=[1/0,1/0,-(1/0),-(1/0)],f=this.numPoints=i.length>>1;for(e=0;f>e;++e)r=i[2*e],n=i[2*e+1],c[0]=Math.min(r,c[0]),c[1]=Math.min(n,c[1]),c[2]=Math.max(r,c[2]),c[3]=Math.max(n,c[3]);c[2]===c[0]&&(c[2]+=1),c[3]===c[1]&&(c[3]+=1);var h=1/(c[2]-c[0]),d=1/(c[3]-c[1]),p=c[0],g=c[1],v=s.mallocFloat32(f*u.length*4),m=0;for(e=0;f>e;++e){r=i[2*e],n=i[2*e+1];for(var y=a[4*e],b=a[4*e+1],x=a[4*e+2],_=a[4*e+3],w=0;w<u.length;++w){var A=u[w],k=A[0],M=A[1];0>k?k*=y:k>0&&(k*=b),0>M?M*=x:M>0&&(M*=_),v[m++]=h*(r-p+k),v[m++]=d*(n-g+M),v[m++]=o*A[2]+(l+o)*A[4],v[m++]=o*A[3]+(l+o)*A[5]}}this.buffer.update(v),s.free(v)},c.dispose=function(){this.plot.removeObject(this),this.shader.dispose(),this.buffer.dispose()}},{"./lib/shaders":71,"gl-buffer":66,"gl-shader":96,"typedarray-pool":151}],71:[function(t,e,r){e.exports={vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 pixelOffset;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvoid main() {\n  vec3 scrPosition = viewTransform * vec3(position, 1);\n  gl_Position = vec4(\n    scrPosition.xy + scrPosition.z * pixelScale * pixelOffset,\n    0,\n    scrPosition.z);\n}\n",fragment:"precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"}},{}],72:[function(t,e,r){"use strict";function n(t){var e=t.getParameter(t.FRAMEBUFFER_BINDING),r=t.getParameter(t.RENDERBUFFER_BINDING),n=t.getParameter(t.TEXTURE_BINDING_2D);return[e,r,n]}function i(t,e){t.bindFramebuffer(t.FRAMEBUFFER,e[0]),t.bindRenderbuffer(t.RENDERBUFFER,e[1]),t.bindTexture(t.TEXTURE_2D,e[2])}function a(t,e){var r=t.getParameter(e.MAX_COLOR_ATTACHMENTS_WEBGL);y=new Array(r+1);for(var n=0;r>=n;++n){for(var i=new Array(r),a=0;n>a;++a)i[a]=t.COLOR_ATTACHMENT0+a;for(var a=n;r>a;++a)i[a]=t.NONE;y[n]=i}}function o(t){switch(t){case p:throw new Error("gl-fbo: Framebuffer unsupported");case g:throw new Error("gl-fbo: Framebuffer incomplete attachment");case v:throw new Error("gl-fbo: Framebuffer incomplete dimensions");case m:throw new Error("gl-fbo: Framebuffer incomplete missing attachment");default:throw new Error("gl-fbo: Framebuffer failed for unspecified reason")}}function s(t,e,r,n,i,a){if(!n)return null;var o=d(t,e,r,i,n);return o.magFilter=t.NEAREST,o.minFilter=t.NEAREST,o.mipSamples=1,o.bind(),t.framebufferTexture2D(t.FRAMEBUFFER,a,t.TEXTURE_2D,o.handle,0),o}function l(t,e,r,n,i){var a=t.createRenderbuffer();return t.bindRenderbuffer(t.RENDERBUFFER,a),t.renderbufferStorage(t.RENDERBUFFER,n,e,r),t.framebufferRenderbuffer(t.FRAMEBUFFER,i,t.RENDERBUFFER,a),a}function u(t){var e=n(t.gl),r=t.gl,a=t.handle=r.createFramebuffer(),u=t._shape[0],c=t._shape[1],f=t.color.length,h=t._ext,d=t._useStencil,p=t._useDepth,g=t._colorType;r.bindFramebuffer(r.FRAMEBUFFER,a);for(var v=0;f>v;++v)t.color[v]=s(r,u,c,g,r.RGBA,r.COLOR_ATTACHMENT0+v);0===f?(t._color_rb=l(r,u,c,r.RGBA4,r.COLOR_ATTACHMENT0),h&&h.drawBuffersWEBGL(y[0])):f>1&&h.drawBuffersWEBGL(y[f]);var m=r.getExtension("WEBGL_depth_texture");m?d?t.depth=s(r,u,c,m.UNSIGNED_INT_24_8_WEBGL,r.DEPTH_STENCIL,r.DEPTH_STENCIL_ATTACHMENT):p&&(t.depth=s(r,u,c,r.UNSIGNED_SHORT,r.DEPTH_COMPONENT,r.DEPTH_ATTACHMENT)):p&&d?t._depth_rb=l(r,u,c,r.DEPTH_STENCIL,r.DEPTH_STENCIL_ATTACHMENT):p?t._depth_rb=l(r,u,c,r.DEPTH_COMPONENT16,r.DEPTH_ATTACHMENT):d&&(t._depth_rb=l(r,u,c,r.STENCIL_INDEX,r.STENCIL_ATTACHMENT));var b=r.checkFramebufferStatus(r.FRAMEBUFFER);if(b!==r.FRAMEBUFFER_COMPLETE){t._destroyed=!0,r.bindFramebuffer(r.FRAMEBUFFER,null),r.deleteFramebuffer(t.handle),t.handle=null,t.depth&&(t.depth.dispose(),t.depth=null),t._depth_rb&&(r.deleteRenderbuffer(t._depth_rb),t._depth_rb=null);for(var v=0;v<t.color.length;++v)t.color[v].dispose(),t.color[v]=null;t._color_rb&&(r.deleteRenderbuffer(t._color_rb),t._color_rb=null),i(r,e),o(b)}i(r,e)}function c(t,e,r,n,i,a,o,s){this.gl=t,this._shape=[0|e,0|r],this._destroyed=!1,this._ext=s,this.color=new Array(i);for(var l=0;i>l;++l)this.color[l]=null;this._color_rb=null,this.depth=null,this._depth_rb=null,this._colorType=n,this._useDepth=a,this._useStencil=o;var c=this,f=[0|e,0|r];Object.defineProperties(f,{0:{get:function(){return c._shape[0]},set:function(t){return c.width=t}},1:{get:function(){return c._shape[1]},set:function(t){return c.height=t}}}),this._shapeVector=f,u(this)}function f(t,e,r){if(t._destroyed)throw new Error("gl-fbo: Can't resize destroyed FBO");if(t._shape[0]!==e||t._shape[1]!==r){var a=t.gl,s=a.getParameter(a.MAX_RENDERBUFFER_SIZE);if(0>e||e>s||0>r||r>s)throw new Error("gl-fbo: Can't resize FBO, invalid dimensions");t._shape[0]=e,t._shape[1]=r;for(var l=n(a),u=0;u<t.color.length;++u)t.color[u].shape=t._shape;t._color_rb&&(a.bindRenderbuffer(a.RENDERBUFFER,t._color_rb),a.renderbufferStorage(a.RENDERBUFFER,a.RGBA4,t._shape[0],t._shape[1])),t.depth&&(t.depth.shape=t._shape),t._depth_rb&&(a.bindRenderbuffer(a.RENDERBUFFER,t._depth_rb),t._useDepth&&t._useStencil?a.renderbufferStorage(a.RENDERBUFFER,a.DEPTH_STENCIL,t._shape[0],t._shape[1]):t._useDepth?a.renderbufferStorage(a.RENDERBUFFER,a.DEPTH_COMPONENT16,t._shape[0],t._shape[1]):t._useStencil&&a.renderbufferStorage(a.RENDERBUFFER,a.STENCIL_INDEX,t._shape[0],t._shape[1])),a.bindFramebuffer(a.FRAMEBUFFER,t.handle);var c=a.checkFramebufferStatus(a.FRAMEBUFFER);c!==a.FRAMEBUFFER_COMPLETE&&(t.dispose(),i(a,l),o(c)),i(a,l)}}function h(t,e,r,n){p||(p=t.FRAMEBUFFER_UNSUPPORTED,g=t.FRAMEBUFFER_INCOMPLETE_ATTACHMENT,v=t.FRAMEBUFFER_INCOMPLETE_DIMENSIONS,m=t.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT);var i=t.getExtension("WEBGL_draw_buffers");if(!y&&i&&a(t,i),Array.isArray(e)&&(n=r,r=0|e[1],e=0|e[0]),"number"!=typeof e)throw new Error("gl-fbo: Missing shape parameter");var o=t.getParameter(t.MAX_RENDERBUFFER_SIZE);if(0>e||e>o||0>r||r>o)throw new Error("gl-fbo: Parameters are too large for FBO");n=n||{};var s=1;if("color"in n){if(s=Math.max(0|n.color,0),0>s)throw new Error("gl-fbo: Must specify a nonnegative number of colors");if(s>1){if(!i)throw new Error("gl-fbo: Multiple draw buffer extension not supported");if(s>t.getParameter(i.MAX_COLOR_ATTACHMENTS_WEBGL))throw new Error("gl-fbo: Context does not support "+s+" draw buffers")}}var l=t.UNSIGNED_BYTE,u=t.getExtension("OES_texture_float");if(n.float&&s>0){if(!u)throw new Error("gl-fbo: Context does not support floating point textures");l=t.FLOAT}else n.preferFloat&&s>0&&u&&(l=t.FLOAT);var f=!0;"depth"in n&&(f=!!n.depth);var h=!1;return"stencil"in n&&(h=!!n.stencil),new c(t,e,r,l,s,f,h,i)}var d=t("gl-texture2d");e.exports=h;var p,g,v,m,y=null,b=c.prototype;Object.defineProperties(b,{shape:{get:function(){return this._destroyed?[0,0]:this._shapeVector},set:function(t){if(Array.isArray(t)||(t=[0|t,0|t]),2!==t.length)throw new Error("gl-fbo: Shape vector must be length 2");var e=0|t[0],r=0|t[1];return f(this,e,r),[e,r]},enumerable:!1},width:{get:function(){return this._destroyed?0:this._shape[0]},set:function(t){return t=0|t,f(this,t,this._shape[1]),t},enumerable:!1},height:{get:function(){return this._destroyed?0:this._shape[1]},set:function(t){return t=0|t,f(this,this._shape[0],t),t},enumerable:!1}}),b.bind=function(){if(!this._destroyed){var t=this.gl;t.bindFramebuffer(t.FRAMEBUFFER,this.handle),t.viewport(0,0,this._shape[0],this._shape[1])}},b.dispose=function(){if(!this._destroyed){this._destroyed=!0;var t=this.gl;t.deleteFramebuffer(this.handle),this.handle=null,this.depth&&(this.depth.dispose(),this.depth=null),this._depth_rb&&(t.deleteRenderbuffer(this._depth_rb),this._depth_rb=null);for(var e=0;e<this.color.length;++e)this.color[e].dispose(),this.color[e]=null;this._color_rb&&(t.deleteRenderbuffer(this._color_rb),this._color_rb=null)}}},{"gl-texture2d":115}],73:[function(t,e,r){"use strict";function n(t,e,r,n,i,a){this.plot=t,this.shader=e,this.pickShader=r,this.positionBuffer=n,this.colorBuffer=i,this.idBuffer=a,this.xData=[],this.yData=[],this.shape=[0,0],this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.pickOffset=0}function i(t,e){var r=t.gl,i=l(r,c.vertex,c.fragment),a=l(r,c.pickVertex,c.pickFragment),o=u(r),s=u(r),f=u(r),h=new n(t,i,a,o,s,f);return h.update(e),t.addObject(h),h}e.exports=i;var a=t("binary-search-bounds"),o=t("iota-array"),s=t("typedarray-pool"),l=t("gl-shader"),u=t("gl-buffer"),c=t("./lib/shaders"),f=n.prototype,h=[0,0,1,0,0,1,1,0,1,1,0,1];f.draw=function(){var t=[1,0,0,0,1,0,0,0,1];return function(){var e=this.plot,r=this.shader,n=this.bounds,i=(this.numVertices,e.gl),a=(e.viewBox,e.dataBox),o=n[2]-n[0],s=n[3]-n[1],l=a[2]-a[0],u=a[3]-a[1];
+-t[0]=2*o/l,t[4]=2*s/u,t[6]=2*(n[0]-a[0])/l-1,t[7]=2*(n[1]-a[1])/u-1,r.bind();var c=r.uniforms;c.viewTransform=t;var f=r.attributes;this.positionBuffer.bind(),f.position.pointer(),this.colorBuffer.bind(),f.color.pointer(i.UNSIGNED_BYTE,!0),i.drawArrays(i.TRIANGLES,0,this.numVertices)}}(),f.drawPick=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0,0,0];return function(r){var n=this.plot,i=this.pickShader,a=this.bounds,o=(this.numVertices,n.gl),s=(n.viewBox,n.dataBox),l=a[2]-a[0],u=a[3]-a[1],c=s[2]-s[0],f=s[3]-s[1];t[0]=2*l/c,t[4]=2*u/f,t[6]=2*(a[0]-s[0])/c-1,t[7]=2*(a[1]-s[1])/f-1;for(var h=0;4>h;++h)e[h]=r>>8*h&255;this.pickOffset=r,i.bind();var d=i.uniforms;d.viewTransform=t,d.pickOffset=e;var p=i.attributes;return this.positionBuffer.bind(),p.position.pointer(),this.idBuffer.bind(),p.pickId.pointer(o.UNSIGNED_BYTE,!1),o.drawArrays(o.TRIANGLES,0,this.numVertices),r+this.shape[0]*this.shape[1]}}(),f.pick=function(t,e,r){var n=this.pickOffset,i=this.shape[0]*this.shape[1];if(n>r||r>=n+i)return null;var a=r-n,o=this.xData,s=this.yData;return{object:this,pointId:a,dataCoord:[o[a%this.shape[0]],s[a/this.shape[0]|0]]}},f.update=function(t){t=t||{};var e=t.shape||[0,0],r=t.x||o(e[0]),n=t.y||o(e[1]),i=t.z||new Float32Array(e[0]*e[1]);this.xData=r,this.yData=n;var l=t.colorLevels||[0],u=t.colorValues||[0,0,0,1],c=l.length,f=this.bounds,d=f[0]=r[0],p=f[1]=n[0],g=f[2]=r[r.length-1],v=f[3]=n[n.length-1],m=1/(g-d),y=1/(v-p),b=e[0]*e[1]*(h.length>>>1);this.numVertices=b;var x=s.mallocUint8(4*b),_=s.mallocFloat32(2*b),w=s.mallocUint32(b),A=e[0],k=e[1];this.shape=[A,k];for(var M=0,E=0;k-1>E;++E)for(var T=y*(n[E]-p),L=y*(n[E+1]-p),S=0;A-1>S;++S)for(var C=m*(r[S]-d),R=m*(r[S+1]-d),I=0;I<h.length;I+=2){var P,O,N,z,D=h[I],F=h[I+1],B=(E+F)*A+(S+D),j=i[B],U=a.le(l,j);if(0>U)P=u[0],O=u[1],N=u[2],z=u[3];else if(U===c-1)P=u[4*c-4],O=u[4*c-3],N=u[4*c-2],z=u[4*c-1];else{var V=(j-l[U])/(l[U+1]-l[U]),q=1-V,H=4*U,G=4*(U+1);P=q*u[H]+V*u[G],O=q*u[H+1]+V*u[G+1],N=q*u[H+2]+V*u[G+2],z=q*u[H+3]+V*u[G+3]}x[4*M]=255*P,x[4*M+1]=255*O,x[4*M+2]=255*N,x[4*M+3]=255*z,_[2*M]=(1-D)*C+D*R,_[2*M+1]=(1-F)*T+F*L,w[M]=E*A+S,M+=1}this.positionBuffer.update(_),this.colorBuffer.update(x),this.idBuffer.update(w),s.free(_),s.free(x),s.free(w)},f.dispose=function(){this.shader.dispose(),this.pickShader.dispose(),this.positionBuffer.dispose(),this.colorBuffer.dispose(),this.idBuffer.dispose(),this.plot.removeObject(this)}},{"./lib/shaders":74,"binary-search-bounds":75,"gl-buffer":66,"gl-shader":96,"iota-array":123,"typedarray-pool":151}],74:[function(t,e,r){"use strict";e.exports={fragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  fragColor = color;\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n",pickFragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragId;\nvoid main() {\n  gl_FragColor = fragId;\n}\n",pickVertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 viewTransform;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id / 255.0;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n"}},{}],75:[function(t,e,r){arguments[4][21][0].apply(r,arguments)},{dup:21}],76:[function(t,e,r){r.lineVertex="precision mediump float;\n#define GLSLIFY 1\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\nvoid main() {\n  vec2 dir = (matrix * vec3(d, 0)).xy;\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = 0.5 * width *\n    normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n}\n",r.lineFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}\n",r.mitreVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 p;\n\nuniform mat3  matrix;\nuniform vec2 screenShape;\nuniform float radius;\n\nvoid main() {\n  vec3 pp = matrix * vec3(p, 1);\n  gl_Position  = vec4(pp.xy, 0, pp.z);\n  gl_PointSize = radius;\n}\n",r.mitreFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}\n",r.pickVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\nattribute vec4 pick0, pick1;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = width *\n    normalize(screenShape.yx * vec2(d.y, -d.x)) / screenShape.xy;\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}\n",r.pickFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}\n",r.fillVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 projectAxis;\nuniform float projectValue;\nuniform float depth;\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 p = base.xy / base.z;\n  if(d.y < 0.0 || (d.y == 0.0 && d.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}\n",r.fillFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"},{}],77:[function(t,e,r){"use strict";function n(t,e,r,n,i,a,o,s){this.plot=t,this.dashPattern=e,this.lineBuffer=r,this.pickBuffer=n,this.lineShader=i,this.mitreShader=a,this.fillShader=o,this.pickShader=s,this.usingDashes=!1,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.width=1,this.color=[0,0,1,1],this.fill=[!1,!1,!1,!1],this.fillColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.data=null,this.numPoints=0,this.vertCount=0,this.pickOffset=0,this.lodBuffer=[]}function i(t){return t.map(function(t){return t.slice()})}function a(t,e){var r=t.gl,i=s(r),a=s(r),u=l(r,[1,1]),c=o(r,f.lineVertex,f.lineFragment),h=o(r,f.mitreVertex,f.mitreFragment),d=o(r,f.fillVertex,f.fillFragment),p=o(r,f.pickVertex,f.pickFragment),g=new n(t,u,i,a,c,h,d,p);return t.addObject(g),g.update(e),g}e.exports=a;var o=t("gl-shader"),s=t("gl-buffer"),l=t("gl-texture2d"),u=t("ndarray"),c=t("typedarray-pool"),f=t("./lib/shaders"),h=n.prototype;h.draw=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0],r=[1,0],n=[-1,0],i=[0,1],a=[0,-1];return function(){var o=this.plot,s=this.color,l=this.width,u=(this.numPoints,this.bounds),c=this.vertCount;if(c){var f=o.gl,h=o.viewBox,d=o.dataBox,p=o.pixelRatio,g=u[2]-u[0],v=u[3]-u[1],m=d[2]-d[0],y=d[3]-d[1],b=h[2]-h[0],x=h[3]-h[1];t[0]=2*g/m,t[4]=2*v/y,t[6]=2*(u[0]-d[0])/m-1,t[7]=2*(u[1]-d[1])/y-1,e[0]=b,e[1]=x;var _=this.lineBuffer;_.bind();var w=this.fill;if(w[0]||w[1]||w[2]||w[3]){var A=this.fillShader;A.bind();var k=A.uniforms;k.matrix=t,k.depth=o.nextDepthValue();var M=A.attributes;M.a.pointer(f.FLOAT,!1,16,0),M.d.pointer(f.FLOAT,!1,16,8),f.depthMask(!0),f.enable(f.DEPTH_TEST);var E=this.fillColor;w[0]&&(k.color=E[0],k.projectAxis=n,k.projectValue=1,f.drawArrays(f.TRIANGLES,0,c)),w[1]&&(k.color=E[1],k.projectAxis=a,k.projectValue=1,f.drawArrays(f.TRIANGLES,0,c)),w[2]&&(k.color=E[2],k.projectAxis=r,k.projectValue=1,f.drawArrays(f.TRIANGLES,0,c)),w[3]&&(k.color=E[3],k.projectAxis=i,k.projectValue=1,f.drawArrays(f.TRIANGLES,0,c)),f.depthMask(!1),f.disable(f.DEPTH_TEST)}var T=this.lineShader;T.bind();var L=T.uniforms;L.matrix=t,L.color=s,L.width=l*p,L.screenShape=e,L.dashPattern=this.dashPattern.bind(),L.dashLength=this.dashLength*p;var S=T.attributes;if(S.a.pointer(f.FLOAT,!1,16,0),S.d.pointer(f.FLOAT,!1,16,8),f.drawArrays(f.TRIANGLES,0,c),l>2&&!this.usingDashes){var C=this.mitreShader;C.bind();var R=C.uniforms;R.matrix=t,R.color=s,R.screenShape=e,R.radius=l*p,C.attributes.p.pointer(f.FLOAT,!1,48,0),f.drawArrays(f.POINTS,0,c/3|0)}}}}(),h.drawPick=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0],r=[0,0,0,0];return function(n){var i=this.plot,a=this.pickShader,o=this.lineBuffer,s=this.pickBuffer,l=this.width,u=this.numPoints,c=this.bounds,f=this.vertCount,h=i.gl,d=i.viewBox,p=i.dataBox,g=i.pickPixelRatio,v=c[2]-c[0],m=c[3]-c[1],y=p[2]-p[0],b=p[3]-p[1],x=d[2]-d[0],_=d[3]-d[1];if(this.pickOffset=n,!f)return n+u;t[0]=2*v/y,t[4]=2*m/b,t[6]=2*(c[0]-p[0])/y-1,t[7]=2*(c[1]-p[1])/b-1,e[0]=x,e[1]=_,r[0]=255&n,r[1]=n>>>8&255,r[2]=n>>>16&255,r[3]=n>>>24,a.bind();var w=a.uniforms;w.matrix=t,w.width=l*g,w.pickOffset=r,w.screenShape=e;var A=a.attributes;return o.bind(),A.a.pointer(h.FLOAT,!1,16,0),A.d.pointer(h.FLOAT,!1,16,8),s.bind(),A.pick0.pointer(h.UNSIGNED_BYTE,!1,8,0),A.pick1.pointer(h.UNSIGNED_BYTE,!1,8,4),h.drawArrays(h.TRIANGLES,0,f),n+u}}(),h.pick=function(t,e,r){var n=this.pickOffset,i=this.numPoints;if(n>r||r>=n+i)return null;var a=r-n,o=this.data;return{object:this,pointId:a,dataCoord:[o[2*a],o[2*a+1]]}},h.update=function(t){t=t||{};var e=this.plot.gl;!!t.connectGaps;this.color=(t.color||[0,0,1,1]).slice(),this.width=+(t.width||1),this.fill=(t.fill||[!1,!1,!1,!1]).slice(),this.fillColor=i(t.fillColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]);for(var r=t.dashes||[1],n=0,a=0;a<r.length;++a)n+=r[a];for(var o=c.mallocUint8(n),s=0,f=255,a=0;a<r.length;++a){for(var h=0;h<r[a];++h)o[s++]=f;f^=255}this.dashPattern.dispose(),this.usingDashes=r.length>1,this.dashPattern=l(e,u(o,[n,1,4],[1,0,0])),this.dashPattern.minFilter=e.NEAREST,this.dashPattern.magFilter=e.NEAREST,this.dashLength=n,c.free(o);var d=t.positions;this.data=d;var p=this.bounds;p[0]=p[1]=1/0,p[2]=p[3]=-(1/0);var g=this.numPoints=d.length>>>1;if(0!==g){for(var a=0;g>a;++a){var v=d[2*a],m=d[2*a+1];isNaN(v)||isNaN(m)||(p[0]=Math.min(p[0],v),p[1]=Math.min(p[1],m),p[2]=Math.max(p[2],v),p[3]=Math.max(p[3],m))}p[0]===p[2]&&(p[2]+=1),p[3]===p[1]&&(p[3]+=1);for(var y=c.mallocFloat32(24*(g-1)),b=c.mallocUint32(12*(g-1)),x=y.length,_=b.length,s=g,w=0;s>1;){var A=--s,v=d[2*s],m=d[2*s+1],k=A-1,M=d[2*k],E=d[2*k+1];if(!(isNaN(v)||isNaN(m)||isNaN(M)||isNaN(E))){w+=1,v=(v-p[0])/(p[2]-p[0]),m=(m-p[1])/(p[3]-p[1]),M=(M-p[0])/(p[2]-p[0]),E=(E-p[1])/(p[3]-p[1]);var T=M-v,L=E-m,S=A|1<<24,C=A-1,R=A,I=A-1|1<<24;y[--x]=-L,y[--x]=-T,y[--x]=m,y[--x]=v,b[--_]=S,b[--_]=C,y[--x]=L,y[--x]=T,y[--x]=E,y[--x]=M,b[--_]=R,b[--_]=I,y[--x]=-L,y[--x]=-T,y[--x]=E,y[--x]=M,b[--_]=R,b[--_]=I,y[--x]=L,y[--x]=T,y[--x]=E,y[--x]=M,b[--_]=R,b[--_]=I,y[--x]=-L,y[--x]=-T,y[--x]=m,y[--x]=v,b[--_]=S,b[--_]=C,y[--x]=L,y[--x]=T,y[--x]=m,y[--x]=v,b[--_]=S,b[--_]=C}}this.vertCount=6*w,this.lineBuffer.update(y.subarray(x)),this.pickBuffer.update(b.subarray(_)),c.free(y),c.free(b)}},h.dispose=function(){this.plot.removeObject(this),this.lineBuffer.dispose(),this.pickBuffer.dispose(),this.lineShader.dispose(),this.mitreShader.dispose(),this.fillShader.dispose(),this.pickShader.dispose(),this.dashPattern.dispose()}},{"./lib/shaders":76,"gl-buffer":66,"gl-shader":96,"gl-texture2d":115,ndarray:131,"typedarray-pool":151}],78:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],a=e[3],o=r+r,s=n+n,l=i+i,u=r*o,c=n*o,f=n*s,h=i*o,d=i*s,p=i*l,g=a*o,v=a*s,m=a*l;return t[0]=1-f-p,t[1]=c+m,t[2]=h-v,t[3]=0,t[4]=c-m,t[5]=1-u-p,t[6]=d+g,t[7]=0,t[8]=h+v,t[9]=d-g,t[10]=1-u-f,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],79:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.vbo=e,this.shader=r}function i(t){var e=t.gl,r=a(e,[0,0,0,1,1,0,1,1]),i=o(e,s.boxVert,s.lineFrag);return new n(t,r,i)}e.exports=i;var a=t("gl-buffer"),o=t("gl-shader"),s=t("./shaders"),l=n.prototype;l.bind=function(){var t=this.shader;this.vbo.bind(),this.shader.bind(),t.attributes.coord.pointer(),t.uniforms.screenBox=this.plot.screenBox},l.drawBox=function(){var t=[0,0],e=[0,0];return function(r,n,i,a,o){var s=this.plot,l=this.shader,u=s.gl;t[0]=r,t[1]=n,e[0]=i,e[1]=a,l.uniforms.lo=t,l.uniforms.hi=e,l.uniforms.color=o,u.drawArrays(u.TRIANGLE_STRIP,0,4)}}(),l.dispose=function(){this.vbo.dispose(),this.shader.dispose()}},{"./shaders":82,"gl-buffer":66,"gl-shader":96}],80:[function(t,e,r){"use strict";function n(t,e,r,n){this.plot=t,this.vbo=e,this.shader=r,this.tickShader=n,this.ticks=[[],[]]}function i(t,e){return t-e}function a(t){var e=t.gl,r=o(e),i=s(e,u.gridVert,u.gridFrag),a=s(e,u.tickVert,u.gridFrag),l=new n(t,r,i,a);return l}e.exports=a;var o=t("gl-buffer"),s=t("gl-shader"),l=t("binary-search-bounds"),u=t("./shaders"),c=n.prototype;c.draw=function(){var t=[0,0],e=[0,0],r=[0,0];return function(){for(var n=this.plot,i=this.vbo,a=this.shader,o=this.ticks,s=n.gl,l=n._tickBounds,u=n.dataBox,c=n.viewBox,f=n.gridLineWidth,h=n.gridLineColor,d=n.gridLineEnable,p=n.pixelRatio,g=0;2>g;++g){var v=l[g],m=l[g+2],y=m-v,b=.5*(u[g+2]+u[g]),x=u[g+2]-u[g];e[g]=2*y/x,t[g]=2*(v-b)/x}a.bind(),i.bind(),a.attributes.dataCoord.pointer(),a.uniforms.dataShift=t,a.uniforms.dataScale=e;for(var _=0,g=0;2>g;++g){r[0]=r[1]=0,r[g]=1,a.uniforms.dataAxis=r,a.uniforms.lineWidth=f[g]/(c[g+2]-c[g])*p,a.uniforms.color=h[g];var w=6*o[g].length;d[g]&&w&&s.drawArrays(s.TRIANGLES,_,w),_+=w}}}(),c.drawTickMarks=function(){var t=[0,0],e=[0,0],r=[1,0],n=[0,1],a=[0,0],o=[0,0];return function(){for(var s=this.plot,u=this.vbo,c=this.tickShader,f=this.ticks,h=s.gl,d=s._tickBounds,p=s.dataBox,g=s.viewBox,v=s.pixelRatio,m=s.screenBox,y=m[2]-m[0],b=m[3]-m[1],x=g[2]-g[0],_=g[3]-g[1],w=0;2>w;++w){var A=d[w],k=d[w+2],M=k-A,E=.5*(p[w+2]+p[w]),T=p[w+2]-p[w];e[w]=2*M/T,t[w]=2*(A-E)/T}e[0]*=x/y,t[0]*=x/y,e[1]*=_/b,t[1]*=_/b,c.bind(),u.bind(),c.attributes.dataCoord.pointer();var L=c.uniforms;L.dataShift=t,L.dataScale=e;var S=s.tickMarkLength,C=s.tickMarkWidth,R=s.tickMarkColor,I=0,P=6*f[0].length,O=Math.min(l.ge(f[0],(p[0]-d[0])/(d[2]-d[0]),i),f[0].length),N=Math.min(l.gt(f[0],(p[2]-d[0])/(d[2]-d[0]),i),f[0].length),z=I+6*O,D=6*Math.max(0,N-O),F=Math.min(l.ge(f[1],(p[1]-d[1])/(d[3]-d[1]),i),f[1].length),B=Math.min(l.gt(f[1],(p[3]-d[1])/(d[3]-d[1]),i),f[1].length),j=P+6*F,U=6*Math.max(0,B-F);a[0]=2*(g[0]-S[1])/y-1,a[1]=(g[3]+g[1])/b-1,o[0]=S[1]*v/y,o[1]=C[1]*v/b,U&&(L.color=R[1],L.tickScale=o,L.dataAxis=n,L.screenOffset=a,h.drawArrays(h.TRIANGLES,j,U)),a[0]=(g[2]+g[0])/y-1,a[1]=2*(g[1]-S[0])/b-1,o[0]=C[0]*v/y,o[1]=S[0]*v/b,D&&(L.color=R[0],L.tickScale=o,L.dataAxis=r,L.screenOffset=a,h.drawArrays(h.TRIANGLES,z,D)),a[0]=2*(g[2]+S[3])/y-1,a[1]=(g[3]+g[1])/b-1,o[0]=S[3]*v/y,o[1]=C[3]*v/b,U&&(L.color=R[3],L.tickScale=o,L.dataAxis=n,L.screenOffset=a,h.drawArrays(h.TRIANGLES,j,U)),a[0]=(g[2]+g[0])/y-1,a[1]=2*(g[3]+S[2])/b-1,o[0]=C[2]*v/y,o[1]=S[2]*v/b,D&&(L.color=R[2],L.tickScale=o,L.dataAxis=r,L.screenOffset=a,h.drawArrays(h.TRIANGLES,z,D))}}(),c.update=function(){var t=[1,1,-1,-1,1,-1],e=[1,-1,1,1,-1,-1];return function(r){for(var n=r.ticks,i=r.bounds,a=new Float32Array(18*(n[0].length+n[1].length)),o=(this.plot.zeroLineEnable,0),s=[[],[]],l=0;2>l;++l)for(var u=s[l],c=n[l],f=i[l],h=i[l+2],d=0;d<c.length;++d){var p=(c[d].x-f)/(h-f);u.push(p);for(var g=0;6>g;++g)a[o++]=p,a[o++]=t[g],a[o++]=e[g]}this.ticks=s,this.vbo.update(a)}}(),c.dispose=function(){this.vbo.dispose(),this.shader.dispose(),this.tickShader.dispose()}},{"./shaders":82,"binary-search-bounds":84,"gl-buffer":66,"gl-shader":96}],81:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.vbo=e,this.shader=r}function i(t){var e=t.gl,r=a(e,[-1,-1,-1,1,1,-1,1,1]),i=o(e,s.lineVert,s.lineFrag),l=new n(t,r,i);return l}e.exports=i;var a=t("gl-buffer"),o=t("gl-shader"),s=t("./shaders"),l=n.prototype;l.bind=function(){var t=this.shader;this.vbo.bind(),this.shader.bind(),t.attributes.coord.pointer(),t.uniforms.screenBox=this.plot.screenBox},l.drawLine=function(){var t=[0,0],e=[0,0];return function(r,n,i,a,o,s){var l=this.plot,u=this.shader,c=l.gl;t[0]=r,t[1]=n,e[0]=i,e[1]=a,u.uniforms.start=t,u.uniforms.end=e,u.uniforms.width=o*l.pixelRatio,u.uniforms.color=s,c.drawArrays(c.TRIANGLE_STRIP,0,4)}}(),l.dispose=function(){this.vbo.dispose(),this.shader.dispose()}},{"./shaders":82,"gl-buffer":66,"gl-shader":96}],82:[function(t,e,r){"use strict";var n="precision lowp float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = vec4(color.xyz * color.w, color.w);\n}\n";e.exports={lineVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 start, end;\nuniform float width;\n\nvec2 perp(vec2 v) {\n  return vec2(v.y, -v.x);\n}\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  vec2 delta = normalize(perp(start - end));\n  vec2 offset = mix(start, end, 0.5 * (coord.y+1.0));\n  gl_Position = vec4(screen(offset + 0.5 * width * delta * coord.x), 0, 1);\n}\n",lineFrag:n,textVert:"#define GLSLIFY 1\nattribute vec3 textCoordinate;\n\nuniform vec2 dataScale, dataShift, dataAxis, screenOffset, textScale;\nuniform float angle;\n\nvoid main() {\n  float dataOffset  = textCoordinate.z;\n  vec2 glyphOffset  = textCoordinate.xy;\n  mat2 glyphMatrix = mat2(cos(angle), sin(angle), -sin(angle), cos(angle));\n  vec2 screenCoordinate = dataAxis * (dataScale * dataOffset + dataShift) +\n    glyphMatrix * glyphOffset * textScale + screenOffset;\n  gl_Position = vec4(screenCoordinate, 0, 1);\n}\n",textFrag:n,gridVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale;\nuniform float lineWidth;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  pos += 10.0 * dataCoord.y * vec2(dataAxis.y, -dataAxis.x) + dataCoord.z * lineWidth;\n  gl_Position = vec4(pos, 0, 1);\n}\n",gridFrag:n,boxVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 lo, hi;\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  gl_Position = vec4(screen(mix(lo, hi, coord)), 0, 1);\n}\n",tickVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale, screenOffset, tickScale;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  gl_Position = vec4(pos + tickScale*dataCoord.yz + screenOffset, 0, 1);\n}\n"}},{}],83:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.vbo=e,this.shader=r,this.tickOffset=[[],[]],this.tickX=[[],[]],this.labelOffset=[0,0],this.labelCount=[0,0]}function i(t){var e=t.gl,r=a(e),i=o(e,u.textVert,u.textFrag),s=new n(t,r,i);return s}e.exports=i;var a=t("gl-buffer"),o=t("gl-shader"),s=t("text-cache"),l=t("binary-search-bounds"),u=t("./shaders"),c=n.prototype;c.drawTicks=function(){var t=[0,0],e=[0,0],r=[0,0];return function(n){var i=this.plot,a=this.shader,o=this.tickX[n],s=this.tickOffset[n],u=i.gl,c=i.viewBox,f=i.dataBox,h=i.screenBox,d=i.pixelRatio,p=i.tickEnable,g=i.tickPad,v=i.tickColor,m=i.tickAngle,y=(i.tickMarkLength,i.labelEnable),b=i.labelPad,x=i.labelColor,_=i.labelAngle,w=this.labelOffset[n],A=this.labelCount[n],k=l.lt(o,f[n]),M=l.le(o,f[n+2]);t[0]=t[1]=0,t[n]=1,e[n]=(c[2+n]+c[n])/(h[2+n]-h[n])-1;var E=2/h[2+(1^n)]-h[1^n];e[1^n]=E*c[1^n]-1,p[n]&&(e[1^n]-=E*d*g[n],M>k&&s[M]>s[k]&&(a.uniforms.dataAxis=t,a.uniforms.screenOffset=e,a.uniforms.color=v[n],a.uniforms.angle=m[n],u.drawArrays(u.TRIANGLES,s[k],s[M]-s[k]))),y[n]&&A&&(e[1^n]-=E*d*b[n],a.uniforms.dataAxis=r,a.uniforms.screenOffset=e,a.uniforms.color=x[n],a.uniforms.angle=_[n],u.drawArrays(u.TRIANGLES,w,A)),e[1^n]=E*c[2+(1^n)]-1,p[n+2]&&(e[1^n]+=E*d*g[n+2],M>k&&s[M]>s[k]&&(a.uniforms.dataAxis=t,a.uniforms.screenOffset=e,a.uniforms.color=v[n+2],a.uniforms.angle=m[n+2],u.drawArrays(u.TRIANGLES,s[k],s[M]-s[k]))),y[n+2]&&A&&(e[1^n]+=E*d*b[n+2],a.uniforms.dataAxis=r,a.uniforms.screenOffset=e,a.uniforms.color=x[n+2],a.uniforms.angle=_[n+2],u.drawArrays(u.TRIANGLES,w,A))}}(),c.drawTitle=function(){var t=[0,0],e=[0,0];return function(){var r=this.plot,n=this.shader,i=r.gl,a=r.screenBox,o=r.titleCenter,s=r.titleAngle,l=r.titleColor,o=r.titleCenter,u=r.pixelRatio;if(this.titleCount){for(var c=0;2>c;++c)e[c]=2*(o[c]*u-a[c])/(a[2+c]-a[c])-1;n.bind(),n.uniforms.dataAxis=t,n.uniforms.screenOffset=e,n.uniforms.angle=s,n.uniforms.color=l,i.drawArrays(i.TRIANGLES,this.titleOffset,this.titleCount)}}}(),c.bind=function(){var t=[0,0],e=[0,0],r=[0,0];return function(){var n=this.plot,i=this.shader,a=n._tickBounds,o=n.dataBox,s=n.screenBox,l=n.viewBox;i.bind();for(var u=0;2>u;++u){var c=a[u],f=a[u+2],h=f-c,d=.5*(o[u+2]+o[u]),p=o[u+2]-o[u],g=l[u],v=l[u+2],m=v-g,y=s[u],b=s[u+2],x=b-y;e[u]=2*h/p*m/x,t[u]=2*(c-d)/p*m/x}r[1]=2*n.pixelRatio/(s[3]-s[1]),r[0]=r[1]*(s[3]-s[1])/(s[2]-s[0]),i.uniforms.dataScale=e,i.uniforms.dataShift=t,i.uniforms.textScale=r,this.vbo.bind(),i.attributes.textCoordinate.pointer()}}(),c.update=function(t){for(var e=[],r=t.ticks,n=t.bounds,i=0;2>i;++i){for(var a=[Math.floor(e.length/3)],o=[-(1/0)],l=r[i],u=0;u<l.length;++u){for(var c=l[u],f=c.x,h=c.text,d=c.font||"sans-serif",p=c.fontSize||12,g=s(d,h).data,v=1/(n[i+2]-n[i]),m=n[i],y=0;y<g.length;y+=2)e.push(g[y]*p,-g[y+1]*p,(f-m)*v);a.push(Math.floor(e.length/3)),o.push(f)}this.tickOffset[i]=a,this.tickX[i]=o}for(var i=0;2>i;++i){this.labelOffset[i]=Math.floor(e.length/3);for(var g=s(t.labelFont[i],t.labels[i]).data,p=t.labelSize[i],u=0;u<g.length;u+=2)e.push(g[u]*p,-g[u+1]*p,0);this.labelCount[i]=Math.floor(e.length/3)-this.labelOffset[i]}this.titleOffset=Math.floor(e.length/3);for(var g=s(t.titleFont,t.title).data,p=t.titleSize,u=0;u<g.length;u+=2)e.push(g[u]*p,-g[u+1]*p,0);this.titleCount=Math.floor(e.length/3)-this.titleOffset,this.vbo.update(e)},c.dispose=function(){this.vbo.dispose(),this.shader.dispose()}},{"./shaders":82,"binary-search-bounds":84,"gl-buffer":66,"gl-shader":96,"text-cache":147}],84:[function(t,e,r){arguments[4][21][0].apply(r,arguments)},{dup:21}],85:[function(t,e,r){"use strict";function n(t,e){this.gl=t,this.pickBuffer=e,this.screenBox=[0,0,t.drawingBufferWidth,t.drawingBufferHeight],this.viewBox=[0,0,0,0],this.dataBox=[-10,-10,10,10],this.gridLineEnable=[!0,!0],this.gridLineWidth=[1,1],this.gridLineColor=[[0,0,0,1],[0,0,0,1]],this.pixelRatio=1,this.tickMarkLength=[0,0,0,0],this.tickMarkWidth=[0,0,0,0],this.tickMarkColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.tickPad=[15,15,15,15],this.tickAngle=[0,0,0,0],this.tickEnable=[!0,!0,!0,!0],this.tickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.labelPad=[15,15,15,15],this.labelAngle=[0,Math.PI/2,0,3*Math.PI/2],this.labelEnable=[!0,!0,!0,!0],this.labelColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.titleCenter=[0,0],this.titleEnable=!0,this.titleAngle=0,this.titleColor=[0,0,0,1],this.borderColor=[0,0,0,0],this.backgroundColor=[0,0,0,0],this.zeroLineEnable=[!0,!0],this.zeroLineWidth=[4,4],this.zeroLineColor=[[0,0,0,1],[0,0,0,1]],this.borderLineEnable=[!0,!0,!0,!0],this.borderLineWidth=[2,2,2,2],this.borderLineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.grid=null,this.text=null,this.line=null,this.box=null,this.objects=[],this.overlays=[],this._tickBounds=[1/0,1/0,-(1/0),-(1/0)],this.dirty=!1,this.pickDirty=!1,this.pickDelay=120,this.pickRadius=10,this._pickTimeout=null,this._drawPick=this.drawPick.bind(this),this._depthCounter=0}function i(t){for(var e=t.slice(),r=0;r<e.length;++r)e[r]=e[r].slice();return e}function a(t,e){return t.x-e.x}function o(t){var e=t.gl,r=s(e,[e.drawingBufferWidth,e.drawingBufferHeight]),i=new n(e,r);return i.grid=l(i),i.text=u(i),i.line=c(i),i.box=f(i),i.update(t),i}e.exports=o;var s=t("gl-select-static"),l=t("./lib/grid"),u=t("./lib/text"),c=t("./lib/line"),f=t("./lib/box"),h=n.prototype;h.setDirty=function(){this.dirty=this.pickDirty=!0},h.setOverlayDirty=function(){this.dirty=!0},h.nextDepthValue=function(){return this._depthCounter++/65536},h.draw=function(){return function(){var t=this.gl,e=this.screenBox,r=this.viewBox,n=this.dataBox,i=this.pixelRatio,a=this.grid,o=this.line,s=this.text,l=this.objects;if(this._depthCounter=0,this.pickDirty&&(this._pickTimeout&&clearTimeout(this._pickTimeout),this.pickDirty=!1,this._pickTimeout=setTimeout(this._drawPick,this.pickDelay)),this.dirty){this.dirty=!1,t.bindFramebuffer(t.FRAMEBUFFER,null),t.enable(t.SCISSOR_TEST),t.disable(t.DEPTH_TEST),t.depthFunc(t.LESS),t.depthMask(!1),t.enable(t.BLEND),t.blendEquation(t.FUNC_ADD,t.FUNC_ADD),t.blendFunc(t.ONE,t.ONE_MINUS_SRC_ALPHA),t.scissor(e[0],e[1],e[2]-e[0],e[3]-e[1]);var u=this.borderColor;t.clearColor(u[0]*u[3],u[1]*u[3],u[2]*u[3],u[3]),t.clear(t.COLOR_BUFFER_BIT|t.DEPTH_BUFFER_BIT),t.scissor(r[0],r[1],r[2]-r[0],r[3]-r[1]),t.viewport(r[0],r[1],r[2]-r[0],r[3]-r[1]);var c=this.backgroundColor;t.clearColor(c[0]*c[3],c[1]*c[3],c[2]*c[3],c[3]),t.clear(t.COLOR_BUFFER_BIT),a.draw();var f=this.zeroLineEnable,h=this.zeroLineColor,d=this.zeroLineWidth;if(f[0]||f[1]){o.bind();for(var p=0;2>p;++p)if(f[p]&&n[p]<=0&&n[p+2]>=0){var g=e[p]-n[p]*(e[p+2]-e[p])/(n[p+2]-n[p]);0===p?o.drawLine(g,e[1],g,e[3],d[p],h[p]):o.drawLine(e[0],g,e[2],g,d[p],h[p])}}for(var p=0;p<l.length;++p)l[p].draw();t.viewport(e[0],e[1],e[2]-e[0],e[3]-e[1]),t.scissor(e[0],e[1],e[2]-e[0],e[3]-e[1]),this.grid.drawTickMarks(),o.bind();var v=this.borderLineEnable,m=this.borderLineWidth,y=this.borderLineColor;v[1]&&o.drawLine(r[0],r[1]-.5*m[1]*i,r[0],r[3]+.5*m[3]*i,m[1],y[1]),v[0]&&o.drawLine(r[0]-.5*m[0]*i,r[1],r[2]+.5*m[2]*i,r[1],m[0],y[0]),v[3]&&o.drawLine(r[2],r[1]-.5*m[1]*i,r[2],r[3]+.5*m[3]*i,m[3],y[3]),v[2]&&o.drawLine(r[0]-.5*m[0]*i,r[3],r[2]+.5*m[2]*i,r[3],m[2],y[2]),s.bind();for(var p=0;2>p;++p)s.drawTicks(p);this.titleEnable&&s.drawTitle();for(var b=this.overlays,p=0;p<b.length;++p)b[p].draw();t.disable(t.SCISSOR_TEST),t.disable(t.BLEND),t.depthMask(!0)}}}(),h.drawPick=function(){return function(){var t=this.pickBuffer;this.gl;this._pickTimeout=null,t.begin();for(var e=1,r=this.objects,n=0;n<r.length;++n)e=r[n].drawPick(e);t.end()}}(),h.pick=function(){return function(t,e){
+-var r=this.pixelRatio,n=this.pickPixelRatio,i=this.viewBox,a=0|Math.round((t-i[0]/r)*n),o=0|Math.round((e-i[1]/r)*n),s=this.pickBuffer.query(a,o,this.pickRadius);if(!s)return null;for(var l=s.id+(s.value[0]<<8)+(s.value[1]<<16)+(s.value[2]<<24),u=this.objects,c=0;c<u.length;++c){var f=u[c].pick(a,o,l);if(f)return f}return null}}(),h.setScreenBox=function(t){var e=this.screenBox,r=this.pixelRatio;e[0]=0|Math.round(t[0]*r),e[1]=0|Math.round(t[1]*r),e[2]=0|Math.round(t[2]*r),e[3]=0|Math.round(t[3]*r),this.setDirty()},h.setDataBox=function(t){var e=this.dataBox,r=e[0]!==t[0]||e[1]!==t[1]||e[2]!==t[2]||e[3]!==t[3];r&&(e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],this.setDirty())},h.setViewBox=function(t){var e=this.pixelRatio,r=this.viewBox;r[0]=0|Math.round(t[0]*e),r[1]=0|Math.round(t[1]*e),r[2]=0|Math.round(t[2]*e),r[3]=0|Math.round(t[3]*e);var n=this.pickPixelRatio;this.pickBuffer.shape=[0|Math.round((t[2]-t[0])*n),0|Math.round((t[3]-t[1])*n)],this.setDirty()},h.update=function(t){t=t||{};var e=this.gl;this.pixelRatio=t.pixelRatio||1;var r=this.pixelRatio;this.pickPixelRatio=Math.max(r,1),this.setScreenBox(t.screenBox||[0,0,e.drawingBufferWidth/r,e.drawingBufferHeight/r]);this.screenBox;this.setViewBox(t.viewBox||[.125*(this.screenBox[2]-this.screenBox[0])/r,.125*(this.screenBox[3]-this.screenBox[1])/r,.875*(this.screenBox[2]-this.screenBox[0])/r,.875*(this.screenBox[3]-this.screenBox[1])/r]);var n=this.viewBox,o=(n[2]-n[0])/(n[3]-n[1]);this.setDataBox(t.dataBox||[-10,-10/o,10,10/o]),this.borderColor=(t.borderColor||[0,0,0,0]).slice(),this.backgroundColor=(t.backgroundColor||[0,0,0,0]).slice(),this.gridLineEnable=(t.gridLineEnable||[!0,!0]).slice(),this.gridLineWidth=(t.gridLineWidth||[1,1]).slice(),this.gridLineColor=i(t.gridLineColor||[[.5,.5,.5,1],[.5,.5,.5,1]]),this.zeroLineEnable=(t.zeroLineEnable||[!0,!0]).slice(),this.zeroLineWidth=(t.zeroLineWidth||[4,4]).slice(),this.zeroLineColor=i(t.zeroLineColor||[[0,0,0,1],[0,0,0,1]]),this.tickMarkLength=(t.tickMarkLength||[0,0,0,0]).slice(),this.tickMarkWidth=(t.tickMarkWidth||[0,0,0,0]).slice(),this.tickMarkColor=i(t.tickMarkColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]),this.titleCenter=(t.titleCenter||[.5*(n[0]+n[2])/r,(n[3]+120)/r]).slice(),this.titleEnable=!("titleEnable"in t&&!t.titleEnable),this.titleAngle=t.titleAngle||0,this.titleColor=(t.titleColor||[0,0,0,1]).slice(),this.labelPad=(t.labelPad||[15,15,15,15]).slice(),this.labelAngle=(t.labelAngle||[0,Math.PI/2,0,3*Math.PI/2]).slice(),this.labelEnable=(t.labelEnable||[!0,!0,!0,!0]).slice(),this.labelColor=i(t.labelColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]),this.tickPad=(t.tickPad||[15,15,15,15]).slice(),this.tickAngle=(t.tickAngle||[0,0,0,0]).slice(),this.tickEnable=(t.tickEnable||[!0,!0,!0,!0]).slice(),this.tickColor=i(t.tickColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]),this.borderLineEnable=(t.borderLineEnable||[!0,!0,!0,!0]).slice(),this.borderLineWidth=(t.borderLineWidth||[2,2,2,2]).slice(),this.borderLineColor=i(t.borderLineColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]);var s=t.ticks||[[],[]],l=this._tickBounds;l[0]=l[1]=1/0,l[2]=l[3]=-(1/0);for(var u=0;2>u;++u){var c=s[u].slice(0);0!==c.length&&(c.sort(a),l[u]=Math.min(l[u],c[0].x),l[u+2]=Math.max(l[u+2],c[c.length-1].x))}this.grid.update({bounds:l,ticks:s}),this.text.update({bounds:l,ticks:s,labels:t.labels||["x","y"],labelSize:t.labelSize||[12,12],labelFont:t.labelFont||["sans-serif","sans-serif"],title:t.title||"",titleSize:t.titleSize||18,titleFont:t.titleFont||"sans-serif"}),this.setDirty()},h.dispose=function(){this.box.dispose(),this.grid.dispose(),this.text.dispose(),this.line.dispose();for(var t=this.objects.length-1;t>=0;--t)this.objects[t].dispose();this.objects.length=0;for(var t=this.overlays.length-1;t>=0;--t)this.overlays[t].dispose();this.overlays.length=0,this.gl=null},h.addObject=function(t){this.objects.indexOf(t)<0&&(this.objects.push(t),this.setDirty())},h.removeObject=function(t){for(var e=this.objects,r=0;r<e.length;++r)if(e[r]===t){e.splice(r,1),this.setDirty();break}},h.addOverlay=function(t){this.overlays.indexOf(t)<0&&(this.overlays.push(t),this.setOverlayDirty())},h.removeOverlay=function(t){for(var e=this.overlays,r=0;r<e.length;++r)if(e[r]===t){e.splice(r,1),this.setOverlayDirty();break}}},{"./lib/box":79,"./lib/grid":80,"./lib/line":81,"./lib/text":83,"gl-select-static":95}],86:[function(t,e,r){"use strict";e.exports={vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  fragColor = color;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",fragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",pickVertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 id;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\nuniform vec4 pickOffset;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",pickFragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"}},{}],87:[function(t,e,r){"use strict";function n(t){if(t in h)return h[t];var e=c(t,{polygons:!0,font:"sans-serif",textAlign:"left",textBaseline:"alphabetic"}),r=[],n=[];e.forEach(function(t){t.forEach(function(t){for(var e=0;e<t.length;++e){var i=t[(e+t.length-1)%t.length],a=t[e],o=t[(e+1)%t.length],s=t[(e+2)%t.length],l=a[0]-i[0],u=a[1]-i[1],c=Math.sqrt(l*l+u*u);l/=c,u/=c,r.push(i[0],i[1]+1.4),n.push(u,-l),r.push(i[0],i[1]+1.4),n.push(-u,l),r.push(a[0],a[1]+1.4),n.push(-u,l),r.push(a[0],a[1]+1.4),n.push(-u,l),r.push(i[0],i[1]+1.4),n.push(u,-l),r.push(a[0],a[1]+1.4),n.push(u,-l);var f=s[0]-o[0],h=s[1]-o[1],d=Math.sqrt(f*f+h*h);f/=d,h/=d,r.push(a[0],a[1]+1.4),n.push(u,-l),r.push(a[0],a[1]+1.4),n.push(-u,l),r.push(o[0],o[1]+1.4),n.push(-h,f),r.push(o[0],o[1]+1.4),n.push(-h,f),r.push(a[0],a[1]+1.4),n.push(h,-f),r.push(o[0],o[1]+1.4),n.push(h,-f)}})});for(var i=[1/0,1/0,-(1/0),-(1/0)],a=0;a<r.length;a+=2)for(var o=0;2>o;++o)i[o]=Math.min(i[o],r[a+o]),i[2+o]=Math.max(i[2+o],r[a+o]);return h[t]={coords:r,normals:n,bounds:i}}function i(t,e,r,n,i,a,o){this.plot=t,this.shader=e,this.pickShader=r,this.positionBuffer=n,this.offsetBuffer=i,this.colorBuffer=a,this.idBuffer=o,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.numPoints=0,this.numVertices=0,this.pickOffset=0,this.points=null}function a(t,e){var r=t.gl,n=o(r,f.vertex,f.fragment),a=o(r,f.pickVertex,f.pickFragment),l=s(r),u=s(r),c=s(r),h=s(r),d=new i(t,n,a,l,u,c,h);return d.update(e),t.addObject(d),d}e.exports=a;var o=t("gl-shader"),s=t("gl-buffer"),l=t("text-cache"),u=t("typedarray-pool"),c=t("vectorize-text"),f=t("./lib/shaders"),h={},d=i.prototype;!function(){function t(){var t=this.plot,n=this.bounds,i=t.viewBox,a=t.dataBox,o=t.pixelRatio,s=n[2]-n[0],l=n[3]-n[1],u=a[2]-a[0],c=a[3]-a[1];e[0]=2*s/u,e[4]=2*l/c,e[6]=2*(n[0]-a[0])/u-1,e[7]=2*(n[1]-a[1])/c-1;var f=i[2]-i[0],h=i[3]-i[1];r[0]=2*o/f,r[1]=2*o/h}var e=[1,0,0,0,1,0,0,0,1],r=[1,1];d.draw=function(){var n=this.plot,i=this.shader,a=this.numVertices;if(a){var o=n.gl;t.call(this),i.bind(),i.uniforms.pixelScale=r,i.uniforms.viewTransform=e,this.positionBuffer.bind(),i.attributes.position.pointer(),this.offsetBuffer.bind(),i.attributes.offset.pointer(),this.colorBuffer.bind(),i.attributes.color.pointer(o.UNSIGNED_BYTE,!0),o.drawArrays(o.TRIANGLES,0,a)}};var n=[0,0,0,0];d.drawPick=function(i){var a=this.plot,o=this.pickShader,s=this.numVertices,l=a.gl;if(this.pickOffset=i,!s)return i;for(var u=0;4>u;++u)n[u]=i>>8*u&255;return t.call(this),o.bind(),o.uniforms.pixelScale=r,o.uniforms.viewTransform=e,o.uniforms.pickOffset=n,this.positionBuffer.bind(),o.attributes.position.pointer(),this.offsetBuffer.bind(),o.attributes.offset.pointer(),this.idBuffer.bind(),o.attributes.id.pointer(l.UNSIGNED_BYTE,!1),l.drawArrays(l.TRIANGLES,0,s),i+this.numPoints}}(),d.pick=function(t,e,r){var n=this.pickOffset,i=this.numPoints;if(n>r||r>=n+i)return null;var a=r-n,o=this.points;return{object:this,pointId:a,dataCoord:[o[2*a],o[2*a+1]]}},d.update=function(t){t=t||{};var e=t.positions||[],r=t.colors||[],i=t.glyphs||[],a=t.sizes||[],o=t.borderWidths||[],s=t.borderColors||[];this.points=e;for(var c=this.bounds=[1/0,1/0,-(1/0),-(1/0)],f=0,h=0;h<i.length;++h){f+=l("sans-serif",i[h]).data.length+n(i[h]).coords.length>>1;for(var d=0;2>d;++d)c[d]=Math.min(c[d],e[2*h+d]),c[2+d]=Math.max(c[2+d],e[2*h+d])}c[0]===c[2]&&(c[2]+=1),c[3]===c[1]&&(c[3]+=1);for(var p=1/(c[2]-c[0]),g=1/(c[3]-c[1]),v=c[0],m=c[1],y=u.mallocFloat32(2*f),b=u.mallocFloat32(2*f),x=u.mallocUint8(4*f),_=u.mallocUint32(f),w=0,h=0;h<i.length;++h){for(var A=l("sans-serif",i[h]),k=n(i[h]),M=p*(e[2*h]-v),E=g*(e[2*h+1]-m),T=a[h],L=255*r[4*h],S=255*r[4*h+1],C=255*r[4*h+2],R=255*r[4*h+3],I=.5*(k.bounds[0]+k.bounds[2]),P=.5*(k.bounds[1]+k.bounds[3]),d=0;d<A.data.length;d+=2)y[2*w]=M,y[2*w+1]=E,b[2*w]=-T*(A.data[d]-I),b[2*w+1]=-T*(A.data[d+1]-P),x[4*w]=L,x[4*w+1]=S,x[4*w+2]=C,x[4*w+3]=R,_[w]=h,w+=1;var O=o[h];L=255*s[4*h],S=255*s[4*h+1],C=255*s[4*h+2],R=255*s[4*h+3];for(var d=0;d<k.coords.length;d+=2)y[2*w]=M,y[2*w+1]=E,b[2*w]=-(T*(k.coords[d]-I)+O*k.normals[d]),b[2*w+1]=-(T*(k.coords[d+1]-P)+O*k.normals[d+1]),x[4*w]=L,x[4*w+1]=S,x[4*w+2]=C,x[4*w+3]=R,_[w]=h,w+=1}this.numPoints=i.length,this.numVertices=f,this.positionBuffer.update(y),this.offsetBuffer.update(b),this.colorBuffer.update(x),this.idBuffer.update(_),u.free(y),u.free(b),u.free(x),u.free(_)},d.dispose=function(){this.shader.dispose(),this.pickShader.dispose(),this.positionBuffer.dispose(),this.offsetBuffer.dispose(),this.colorBuffer.dispose(),this.idBuffer.dispose(),this.plot.removeObject(this)}},{"./lib/shaders":86,"gl-buffer":66,"gl-shader":96,"text-cache":147,"typedarray-pool":151,"vectorize-text":153}],88:[function(t,e,r){r.pointVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute float weight;\n\nuniform mat3 matrix;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}\n",r.pointFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}\n",r.pickVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n",r.pickFragment="precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"},{}],89:[function(t,e,r){arguments[4][21][0].apply(r,arguments)},{dup:21}],90:[function(t,e,r){"use strict";function n(t,e,r,n,a){4*h>=a?i(0,a-1,t,e,r,n):f(0,a-1,t,e,r,n)}function i(t,e,r,n,i,a){for(var o=t+1;e>=o;++o){for(var s=r[o],l=n[2*o],u=n[2*o+1],c=i[o],f=a[o],h=o;h>t;){var d=r[h-1],p=n[2*(h-1)];if((d-s||l-p)>=0)break;r[h]=d,n[2*h]=p,n[2*h+1]=n[2*h-1],i[h]=i[h-1],a[h]=a[h-1],h-=1}r[h]=s,n[2*h]=l,n[2*h+1]=u,i[h]=c,a[h]=f}}function a(t,e,r,n,i,a){var o=r[t],s=n[2*t],l=n[2*t+1],u=i[t],c=a[t];r[t]=r[e],n[2*t]=n[2*e],n[2*t+1]=n[2*e+1],i[t]=i[e],a[t]=a[e],r[e]=o,n[2*e]=s,n[2*e+1]=l,i[e]=u,a[e]=c}function o(t,e,r,n,i,a){r[t]=r[e],n[2*t]=n[2*e],n[2*t+1]=n[2*e+1],i[t]=i[e],a[t]=a[e]}function s(t,e,r,n,i,a,o){var s=n[t],l=i[2*t],u=i[2*t+1],c=a[t],f=o[t];n[t]=n[e],i[2*t]=i[2*e],i[2*t+1]=i[2*e+1],a[t]=a[e],o[t]=o[e],n[e]=n[r],i[2*e]=i[2*r],i[2*e+1]=i[2*r+1],a[e]=a[r],o[e]=o[r],n[r]=s,i[2*r]=l,i[2*r+1]=u,a[r]=c,o[r]=f}function l(t,e,r,n,i,a,o,s,l,u,c){s[t]=s[e],l[2*t]=l[2*e],l[2*t+1]=l[2*e+1],u[t]=u[e],c[t]=c[e],s[e]=r,l[2*e]=n,l[2*e+1]=i,u[e]=a,c[e]=o}function u(t,e,r,n,i){return(r[t]-r[e]||n[2*e]-n[2*t]||i[t]-i[e])<0}function c(t,e,r,n,i,a,o,s){return(e-a[t]||o[2*t]-r||i-s[t])<0}function f(t,e,r,n,d,p){var 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c=1/0,f=1/0,h=-(1/0),d=-(1/0),p=0;u>p;++p){var g=t[2*p],v=t[2*p+1];c=Math.min(c,g),h=Math.max(h,g),f=Math.min(f,v),d=Math.max(d,v),e[p]=p}c===h&&(h+=1+Math.abs(h)),f===d&&(d+=1+Math.abs(h));var m=1/(h-c),y=1/(d-f),b=Math.max(h-c,d-f);a=a||[0,0,0,0],a[0]=c,a[1]=f,a[2]=h,a[3]=d;var x=o.mallocInt32(u),_=0;l(c,f,b,0,u,0),s(x,t,e,r,u);for(var w=[],A=0,k=u,_=u-1;_>=0;--_){t[2*_]=(t[2*_]-c)*m,t[2*_+1]=(t[2*_+1]-f)*y;var M=x[_];M!==A&&(w.push(new i(b*Math.pow(.5,M),_+1,k-(_+1))),k=_+1,A=M)}return w.push(new i(b*Math.pow(.5,M+1),0,k)),o.free(x),w}var o=t("typedarray-pool"),s=t("./lib/sort");e.exports=a},{"./lib/sort":90,"typedarray-pool":151}],92:[function(t,e,r){"use strict";function n(t,e,r,n,i,a){this.plot=t,this.offsetBuffer=e,this.pickBuffer=r,this.weightBuffer=n,this.shader=i,this.pickShader=a,this.scales=[],this.size=12,this.borderSize=1,this.pointCount=0,this.color=[1,0,0,1],this.borderColor=[0,0,0,1],this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.pickOffset=0,this.points=null,this.xCoords=null}function i(t,e){var r=t.gl,i=o(r),s=o(r),l=o(r),u=a(r,c.pointVertex,c.pointFragment),f=a(r,c.pickVertex,c.pickFragment),h=new n(t,i,s,l,u,f);return h.update(e),t.addObject(h),h}var a=t("gl-shader"),o=t("gl-buffer"),s=t("binary-search-bounds"),l=t("snap-points-2d"),u=t("typedarray-pool"),c=t("./lib/shader");e.exports=i;var f=n.prototype;f.dispose=function(){this.shader.dispose(),this.pickShader.dispose(),this.offsetBuffer.dispose(),this.pickBuffer.dispose(),this.xCoords&&u.free(this.xCoords),this.plot.removeObject(this)},f.update=function(t){function e(e,r){return e in 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v=u[2]-u[0],m=u[3]-u[1],y=g[2]-g[0],b=g[3]-g[1],x=(p[2]-p[0])*d/n.pixelRatio,_=(p[3]-p[1])*d/n.pixelRatio,w=Math.min(y/x,b/_);t[0]=2*v/y,t[4]=2*m/b,t[6]=2*(u[0]-g[0])/y-1,t[7]=2*(u[1]-g[1])/b-1,this.pickOffset=r,e[0]=255&r,e[1]=r>>8&255,e[2]=r>>16&255,e[3]=r>>24&255,i.bind(),i.uniforms.matrix=t,i.uniforms.color=this.color,i.uniforms.borderColor=this.borderColor,i.uniforms.pointSize=d*(c+f),i.uniforms.pickOffset=e,0===this.borderSize?i.uniforms.centerFraction=2:i.uniforms.centerFraction=c/(c+f+1.25),o.bind(),i.attributes.position.pointer(),l.bind(),i.attributes.pickId.pointer(h.UNSIGNED_BYTE);for(var A=this.xCoords,k=(g[0]-u[0]-w*c*d)/v,M=(g[2]-u[0]+w*c*d)/v,E=a.length-1;E>=0;--E){var T=a[E];if(!(T.pixelSize<w&&E>1)){var L=T.offset,S=T.count+L,C=s.ge(A,k,L,S-1),R=s.lt(A,M,C,S-1)+1;R>C&&h.drawArrays(h.POINTS,C,R-C)}}return r+this.pointCount}}(),f.draw=function(){var t=[1,0,0,0,1,0,0,0,1];return function(){var e=this.plot,r=this.shader,n=this.scales,i=this.offsetBuffer,a=this.bounds,o=this.size,l=this.borderSize,u=e.gl,c=e.pixelRatio,f=e.viewBox,h=e.dataBox;if(0!==this.pointCount){var d=a[2]-a[0],p=a[3]-a[1],g=h[2]-h[0],v=h[3]-h[1],m=f[2]-f[0],y=f[3]-f[1],b=Math.min(g/m,v/y);t[0]=2*d/g,t[4]=2*p/v,t[6]=2*(a[0]-h[0])/g-1,t[7]=2*(a[1]-h[1])/v-1,r.bind(),r.uniforms.matrix=t,r.uniforms.color=this.color,r.uniforms.borderColor=this.borderColor,r.uniforms.pointSize=c*(o+l),r.uniforms.useWeight=1,0===this.borderSize?r.uniforms.centerFraction=2:r.uniforms.centerFraction=o/(o+l+1.25),i.bind(),r.attributes.position.pointer(),this.weightBuffer.bind(),r.attributes.weight.pointer();for(var x=this.xCoords,_=(h[0]-a[0]-b*o*c)/d,w=(h[2]-a[0]+b*o*c)/d,A=!0,k=n.length-1;k>=0;--k){var M=n[k];if(!(M.pixelSize<b&&k>1)){var E=M.offset,T=M.count+E,L=s.ge(x,_,E,T-1),S=s.lt(x,w,L,T-1)+1;S>L&&u.drawArrays(u.POINTS,L,S-L),A&&(A=!1,r.uniforms.useWeight=0)}}}}}(),f.pick=function(t,e,r){var n=this.pickOffset,i=this.pointCount;if(n>r||r>=n+i)return null;var a=r-n,o=this.points;return{object:this,pointId:a,dataCoord:[o[2*a],o[2*a+1]]}}},{"./lib/shader":88,"binary-search-bounds":89,"gl-buffer":66,"gl-shader":96,"snap-points-2d":91,"typedarray-pool":151}],93:[function(t,e,r){"use strict";r.boxVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n",r.boxFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"},{}],94:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.boxBuffer=e,this.boxShader=r,this.enabled=!0,this.selectBox=[1/0,1/0,-(1/0),-(1/0)],this.borderColor=[0,0,0,1],this.innerFill=!1,this.innerColor=[0,0,0,.25],this.outerFill=!0,this.outerColor=[0,0,0,.5],this.borderWidth=10}function i(t,e){var r=t.gl,i=o(r,[0,0,0,1,1,0,1,1]),l=a(r,s.boxVertex,s.boxFragment),u=new n(t,i,l);return u.update(e),t.addOverlay(u),u}var a=t("gl-shader"),o=t("gl-buffer"),s=t("./lib/shaders");e.exports=i;var l=n.prototype;l.draw=function(){if(this.enabled){var t=this.plot,e=this.selectBox,r=this.borderWidth,n=(this.innerFill,this.innerColor),i=(this.outerFill,this.outerColor),a=this.borderColor,o=t.box,s=t.screenBox,l=t.dataBox,u=t.viewBox,c=t.pixelRatio,f=(e[0]-l[0])*(u[2]-u[0])/(l[2]-l[0])+u[0],h=(e[1]-l[1])*(u[3]-u[1])/(l[3]-l[1])+u[1],d=(e[2]-l[0])*(u[2]-u[0])/(l[2]-l[0])+u[0],p=(e[3]-l[1])*(u[3]-u[1])/(l[3]-l[1])+u[1];if(f=Math.max(f,u[0]),h=Math.max(h,u[1]),d=Math.min(d,u[2]),p=Math.min(p,u[3]),!(f>d||h>p)){o.bind();var g=s[2]-s[0],v=s[3]-s[1];if(this.outerFill&&(o.drawBox(0,0,g,h,i),o.drawBox(0,h,f,p,i),o.drawBox(0,p,g,v,i),o.drawBox(d,h,g,p,i)),this.innerFill&&o.drawBox(f,h,d,p,n),r>0){var 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r=o(t,e),n=s.mallocUint8(e[0]*e[1]*4);return new i(t,r,n)}e.exports=a;var o=t("gl-fbo"),s=t("typedarray-pool"),l=t("ndarray"),u=t("bit-twiddle").nextPow2,c=t("cwise/lib/wrapper")({args:["array",{offset:[0,0,1],array:0},{offset:[0,0,2],array:0},{offset:[0,0,3],array:0},"scalar","scalar","index"],pre:{body:"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}",args:[],thisVars:["this_closestD2","this_closestX","this_closestY"],localVars:[]},body:{body:"{if(255>_inline_52_arg0_||255>_inline_52_arg1_||255>_inline_52_arg2_||255>_inline_52_arg3_){var 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g=O.lassoPoints={};for(C=0;C<L.length;C++)n=L[C],g[n._id]=p.filtered.map(h(n))}i.gd.emit("plotly_selecting",O)},i.doneFn=function(t,e){if(N.remove(),t||2!==e)i.gd.emit("plotly_selected",O);else{for(S.remove(),C=0;C<z.length;C++)P=z[C],P.selectPoints(P,!1);D.emit("plotly_deselect",null)}}}},{"../../components/color":176,"../../lib/polygon":262,"./axes":279,"./constants":284}],293:[function(t,e,r){"use strict";var n=t("d3"),i=t("fast-isnumeric"),a=t("../../lib"),o=t("./constants"),s=t("./clean_datum"),l=t("./axis_ids");e.exports=function(t){function e(e,r){if(e>0)return Math.log(e)/Math.LN10;if(0>=e&&r&&t.range&&2===t.range.length){var n=t.range[0],i=t.range[1];return.5*(n+i-3*c*Math.abs(n-i))}return o.BADNUM}function r(t){return Math.pow(10,t)}function u(t){return i(t)?Number(t):o.BADNUM}var c=10;if(t.c2l="log"===t.type?e:u,t.l2c="log"===t.type?r:u,t.l2d=function(e){return t.c2d(t.l2c(e))},t.p2d=function(e){return t.l2d(t.p2l(e))},t.setScale=function(){var e,r=t._gd._fullLayout._size;if(t._categories||(t._categories=[]),t.overlaying){var n=l.getFromId(t._gd,t.overlaying);t.domain=n.domain}for(t.range&&2===t.range.length&&t.range[0]!==t.range[1]||(t.range=[-1,1]),e=0;2>e;e++)i(t.range[e])||(t.range[e]=i(t.range[1-e])?t.range[1-e]*(e?10:.1):e?1:-1),t.range[e]<-(Number.MAX_VALUE/2)?t.range[e]=-(Number.MAX_VALUE/2):t.range[e]>Number.MAX_VALUE/2&&(t.range[e]=Number.MAX_VALUE/2);if("y"===t._id.charAt(0)?(t._offset=r.t+(1-t.domain[1])*r.h,t._length=r.h*(t.domain[1]-t.domain[0]),t._m=t._length/(t.range[0]-t.range[1]),t._b=-t._m*t.range[1]):(t._offset=r.l+t.domain[0]*r.w,t._length=r.w*(t.domain[1]-t.domain[0]),t._m=t._length/(t.range[1]-t.range[0]),t._b=-t._m*t.range[0]),!isFinite(t._m)||!isFinite(t._b))throw a.notifier("Something went wrong with axis scaling","long"),t._gd._replotting=!1,new Error("axis scaling")},t.l2p=function(e){return i(e)?n.round(t._b+t._m*e,2):o.BADNUM},t.p2l=function(e){return(e-t._b)/t._m},t.c2p=function(e,r){return 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d=r("tickformat");d||"date"===a||(r("showexponent",s),r("exponentformat"))}}"category"===a||o.noHover||r("hoverformat")}},{"../../lib":256}],295:[function(t,e,r){"use strict";var n=t("../../lib"),i=t("./layout_attributes");e.exports=function(t,e,r,a){var o=n.coerce2(t,e,i,"ticklen"),s=n.coerce2(t,e,i,"tickwidth"),l=n.coerce2(t,e,i,"tickcolor",e.color),u=r("ticks",a.outerTicks||o||s||l?"outside":"");u||(delete e.ticklen,delete e.tickwidth,delete e.tickcolor)}},{"../../lib":256,"./layout_attributes":288}],296:[function(t,e,r){"use strict";var n=t("fast-isnumeric");e.exports=function(t,e,r,i){var a="auto";"array"!==t.tickmode||"log"!==i&&"date"!==i||(t.tickmode="auto"),Array.isArray(t.tickvals)?a="array":t.dtick&&n(t.dtick)&&(a="linear");var o=r("tickmode",a);if("auto"===o)r("nticks");else if("linear"===o)r("tick0"),r("dtick");else{var s=r("tickvals");void 0===s?e.tickmode="auto":r("ticktext")}}},{"fast-isnumeric":65}],297:[function(t,e,r){"use 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i.boxEnabled&&(o(s,i.boxStart[0],i.boxEnd[0]),o(l,i.boxStart[1],i.boxEnd[1]),i.boxEnabled=!1);break;case"pan":if(i.boxEnabled=!1,e){var p=(c-n)*(s[1]-s[0])/(r.viewBox[2]-r.viewBox[0]),g=(f-a)*(l[1]-l[0])/(r.viewBox[3]-r.viewBox[1]);s[0]+=p,s[1]+=p,l[0]+=g,l[1]+=g,i.lastInputTime=Date.now(),t.cameraChanged()}}i.lastPos[0]=n,i.lastPos[1]=a}),i.wheelListener=o(e,function(e,n){var a=t.xaxis.range,o=t.yaxis.range,s=r.viewBox,l=i.lastPos[0],u=i.lastPos[1];switch(t.fullLayout.dragmode){case"zoom":break;case"pan":var c=Math.exp(.1*n/(s[3]-s[1])),f=l/(s[2]-s[0])*(a[1]-a[0])+a[0],h=u/(s[3]-s[1])*(o[1]-o[0])+o[0];a[0]=(a[0]-f)*c+f,a[1]=(a[1]-f)*c+f,o[0]=(o[0]-h)*c+h,o[1]=(o[1]-h)*c+h,i.lastInputTime=Date.now(),t.cameraChanged()}return!0}),i}var a=t("mouse-change"),o=t("mouse-wheel");e.exports=i},{"mouse-change":125,"mouse-wheel":129}],299:[function(t,e,r){"use strict";function n(t){this.scene=t,this.gl=t.gl,this.pixelRatio=t.pixelRatio,this.screenBox=[0,0,1,1],this.viewBox=[0,0,1,1],this.dataBox=[-1,-1,1,1],this.borderLineEnable=[!1,!1,!1,!1],this.borderLineWidth=[1,1,1,1],this.borderLineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.ticks=[[],[]],this.tickEnable=[!0,!0,!1,!1],this.tickPad=[15,15,15,15],this.tickAngle=[0,0,0,0],this.tickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.tickMarkLength=[0,0,0,0],this.tickMarkWidth=[0,0,0,0],this.tickMarkColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.labels=["x","y"],this.labelEnable=[!0,!0,!1,!1],this.labelAngle=[0,Math.PI/2,0,3*Math.PI/2],this.labelPad=[15,15,15,15],this.labelSize=[12,12],this.labelFont=["sans-serif","sans-serif"],this.labelColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.title="",this.titleEnable=!0,this.titleCenter=[0,0,0,0],this.titleAngle=0,this.titleColor=[0,0,0,1],this.titleFont="sans-serif",this.titleSize=18,this.gridLineEnable=[!0,!0],this.gridLineColor=[[0,0,0,.5],[0,0,0,.5]],this.gridLineWidth=[1,1],this.zeroLineEnable=[!0,!0],this.zeroLineWidth=[1,1],this.zeroLineColor=[[0,0,0,1],[0,0,0,1]],this.borderColor=[0,0,0,0],this.backgroundColor=[0,0,0,0]}function i(t){return new n(t)}var a=t("../../plotly"),o=t("../../lib/html2unicode"),s=t("../../lib/str2rgbarray"),l=n.prototype,u=["xaxis","yaxis"];l.merge=function(t){this.titleEnable=!1,this.backgroundColor=s(t.plot_bgcolor);var e,r,n,i,a,l,c,f,h,d,p;for(d=0;2>d;++d){for(e=u[d],r=t[this.scene[e]._name],n=/Click to enter .+ title/.test(r.title)?"":r.title,p=0;2>=p;p+=2)this.labelEnable[d+p]=!1,this.labels[d+p]=o(n),this.labelColor[d+p]=s(r.titlefont.color),this.labelFont[d+p]=r.titlefont.family,this.labelSize[d+p]=r.titlefont.size,this.labelPad[d+p]=this.getLabelPad(e,r),this.tickEnable[d+p]=!1,this.tickColor[d+p]=s((r.tickfont||{}).color),this.tickAngle[d+p]="auto"===r.tickangle?0:Math.PI*-r.tickangle/180,this.tickPad[d+p]=this.getTickPad(r),this.tickMarkLength[d+p]=0,this.tickMarkWidth[d+p]=r.tickwidth||0,this.tickMarkColor[d+p]=s(r.tickcolor),this.borderLineEnable[d+p]=!1,this.borderLineColor[d+p]=s(r.linecolor),this.borderLineWidth[d+p]=r.linewidth||0;c=this.hasSharedAxis(r),a=this.hasAxisInDfltPos(e,r)&&!c,l=this.hasAxisInAltrPos(e,r)&&!c,i=r.mirror||!1,f=c?-1!==String(i).indexOf("all"):!!i,h=c?"allticks"===i:-1!==String(i).indexOf("ticks"),a?this.labelEnable[d]=!0:l&&(this.labelEnable[d+2]=!0),a?this.tickEnable[d]=r.showticklabels:l&&(this.tickEnable[d+2]=r.showticklabels),(a||f)&&(this.borderLineEnable[d]=r.showline),(l||f)&&(this.borderLineEnable[d+2]=r.showline),(a||h)&&(this.tickMarkLength[d]=this.getTickMarkLength(r)),(l||h)&&(this.tickMarkLength[d+2]=this.getTickMarkLength(r)),this.gridLineEnable[d]=r.showgrid,this.gridLineColor[d]=s(r.gridcolor),this.gridLineWidth[d]=r.gridwidth,this.zeroLineEnable[d]=r.zeroline,this.zeroLineColor[d]=s(r.zerolinecolor),this.zeroLineWidth[d]=r.zerolinewidth}},l.hasSharedAxis=function(t){var e=this.scene,r=a.Plots.getSubplotIds(e.fullLayout,"gl2d"),n=a.Axes.findSubplotsWithAxis(r,t);return 0!==n.indexOf(e.id)},l.hasAxisInDfltPos=function(t,e){var r=e.side;return"xaxis"===t?"bottom"===r:"yaxis"===t?"left"===r:void 0},l.hasAxisInAltrPos=function(t,e){var r=e.side;return"xaxis"===t?"top"===r:"yaxis"===t?"right"===r:void 0},l.getLabelPad=function(t,e){var r=1.5,n=e.titlefont.size,i=e.showticklabels;return"xaxis"===t?"top"===e.side?-10+n*(r+(i?1:0)):-10+n*(r+(i?.5:0)):"yaxis"===t?"right"===e.side?10+n*(r+(i?1:.5)):10+n*(r+(i?.5:0)):void 0},l.getTickPad=function(t){return"outside"===t.ticks?10+t.ticklen:15},l.getTickMarkLength=function(t){if(!t.ticks)return 0;var e=t.ticklen;return"inside"===t.ticks?-e:e},e.exports=i},{"../../lib/html2unicode":255,"../../lib/str2rgbarray":268,"../../plotly":276}],300:[function(t,e,r){"use strict";var n=t("./scene2d"),i=t("../plots"),a=t("../../constants/xmlns_namespaces");r.name="gl2d",r.attr=["xaxis","yaxis"],r.idRoot=["x","y"],r.idRegex={x:/^x([2-9]|[1-9][0-9]+)?$/,y:/^y([2-9]|[1-9][0-9]+)?$/},r.attrRegex={x:/^xaxis([2-9]|[1-9][0-9]+)?$/,y:/^yaxis([2-9]|[1-9][0-9]+)?$/},r.attributes=t("../cartesian/attributes"),r.plot=function(t){for(var e=t._fullLayout,r=t._fullData,a=i.getSubplotIds(e,"gl2d"),o=0;o<a.length;o++){var s=a[o],l=e._plots[s],u=i.getSubplotData(r,"gl2d",s),c=l._scene2d;void 0===c&&(c=new n({id:s,graphDiv:t,container:t.querySelector(".gl-container"),staticPlot:t._context.staticPlot,plotGlPixelRatio:t._context.plotGlPixelRatio},e),l._scene2d=c),c.plot(u,t.calcdata,e,t.layout)}},r.clean=function(t,e,r,n){for(var a=i.getSubplotIds(n,"gl2d"),o=0;o<a.length;o++){var s=a[o],l=n._plots[s];if(l._scene2d){var u=i.getSubplotData(t,"gl2d",s);0===u.length&&(l._scene2d.destroy(),delete n._plots[s])}}},r.toSVG=function(t){for(var e=t._fullLayout,r=i.getSubplotIds(e,"gl2d"),n=0;n<r.length;n++){var o=e._plots[r[n]],s=o._scene2d,l=s.toImage("png"),u=e._glimages.append("svg:image");u.attr({xmlns:a.svg,"xlink:href":l,x:0,y:0,width:"100%",height:"100%",preserveAspectRatio:"none"}),s.destroy()}}},{"../../constants/xmlns_namespaces":247,"../cartesian/attributes":278,"../plots":303,"./scene2d":301}],301:[function(t,e,r){"use strict";function n(t,e){this.container=t.container,this.graphDiv=t.graphDiv,this.pixelRatio=t.plotGlPixelRatio||window.devicePixelRatio,this.id=t.id,this.staticPlot=!!t.staticPlot,this.fullLayout=e,this.updateAxes(e),this.makeFramework(),this.glplotOptions=h(this),this.glplotOptions.merge(e),this.glplot=u(this.glplotOptions),this.camera=d(this),this.traces={},this.spikes=c(this.glplot),this.selectBox=f(this.glplot,{innerFill:!1,outerFill:!0}),this.pickResult=null,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.stopped=!1,this.redraw=this.draw.bind(this),this.redraw()}function i(t,e){for(var r=0;2>r;++r){var n=t[r],i=e[r];if(n.length!==i.length)return!0;for(var a=0;a<n.length;++a)if(n[a].x!==i[a].x)return!0}return!1}var a,o,s=t("../../plots/cartesian/axes"),l=t("../../plots/cartesian/graph_interact"),u=t("gl-plot2d"),c=t("gl-spikes2d"),f=t("gl-select-box"),h=t("./convert"),d=t("./camera"),p=t("../../lib/html2unicode"),g=t("../../lib/show_no_webgl_msg"),v=["xaxis","yaxis"];e.exports=n;var m=n.prototype;m.makeFramework=function(){if(this.staticPlot){if(!o){a=document.createElement("canvas");try{o=a.getContext("webgl",{preserveDrawingBuffer:!0,premultipliedAlpha:!0,antialias:!0})}catch(t){throw new Error(["Error creating static canvas/context for image server"].join(" "))}}this.canvas=a,this.gl=o}else{var e,r=document.createElement("canvas"),n={premultipliedAlpha:!0};try{e=r.getContext("webgl",n)}catch(t){}if(!e)try{e=r.getContext("experimental-webgl",n)}catch(t){}e||g(this),this.canvas=r,this.gl=e}var i=this.canvas,s=this.pixelRatio,l=this.fullLayout;i.width=0|Math.ceil(s*l.width),i.height=0|Math.ceil(s*l.height),i.style.width="100%",i.style.height="100%",i.style.position="absolute",i.style.top="0px",i.style.left="0px",i.style["pointer-events"]="none";var u=this.svgContainer=document.createElementNS("http://www.w3.org/2000/svg","svg");u.style.position="absolute",u.style.top=u.style.left="0px",u.style.width=u.style.height="100%",u.style["z-index"]=20,u.style["pointer-events"]="none";var c=this.mouseContainer=document.createElement("div");c.style.position="absolute";var f=this.container;f.appendChild(i),f.appendChild(u),f.appendChild(c)},m.toImage=function(t){t||(t="png"),this.stopped=!0,this.staticPlot&&this.container.appendChild(a),this.glplot.setDirty(),this.glplot.draw();var e=this.glplot.gl,r=e.drawingBufferWidth,n=e.drawingBufferHeight;e.bindFramebuffer(e.FRAMEBUFFER,null);var i=new Uint8Array(r*n*4);e.readPixels(0,0,r,n,e.RGBA,e.UNSIGNED_BYTE,i);for(var 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r=i.append("path").style({fill:"white","fill-opacity":.9}).attr({d:"M0 0"}),e=i.append("text").attr({dx:n.padding+l,dy:.3*+n.fontSize}),u};return u.text=function(a){var o=i.hsl(n.color).l,s=o>=.5?"#aaa":"white",c=o>=.5?"black":"white",f=a||"";e.style({fill:c,"font-size":n.fontSize+"px"}).text(f);var h=n.padding,d=e.node().getBBox(),p={fill:n.color,stroke:s,"stroke-width":"2px"},g=d.width+2*h+l,v=d.height+2*h;return r.attr({d:"M"+[[l,-v/2],[l,-v/4],[n.hasTick?0:l,0],[l,v/4],[l,v/2],[g,v/2],[g,-v/2]].join("L")+"Z"}).style(p),t.attr({transform:"translate("+[l,-v/2+2*h]+")"}),t.style({display:"block"}),u},u.move=function(e){return t?(t.attr({transform:"translate("+[e[0],e[1]]+")"}).style({display:"block"}),u):void 0},u.hide=function(){return t?(t.style({display:"none"}),u):void 0},u.show=function(){return t?(t.style({display:"block"}),u):void 0},u.config=function(t){return o(n,t),u},u},a.tooltipPanel.uid=1,a.adapter={},a.adapter.plotly=function(){var t={};return t.convert=function(t,e){var r={};if(t.data&&(r.data=t.data.map(function(t,r){var n=o({},t),i=[[n,["marker","color"],["color"]],[n,["marker","opacity"],["opacity"]],[n,["marker","line","color"],["strokeColor"]],[n,["marker","line","dash"],["strokeDash"]],[n,["marker","line","width"],["strokeSize"]],[n,["marker","symbol"],["dotType"]],[n,["marker","size"],["dotSize"]],[n,["marker","barWidth"],["barWidth"]],[n,["line","interpolation"],["lineInterpolation"]],[n,["showlegend"],["visibleInLegend"]]];return i.forEach(function(t,r){a.util.translator.apply(null,t.concat(e))}),e||delete n.marker,e&&delete n.groupId,e?("LinePlot"===n.geometry?(n.type="scatter",n.dotVisible===!0?(delete n.dotVisible,n.mode="lines+markers"):n.mode="lines"):"DotPlot"===n.geometry?(n.type="scatter",n.mode="markers"):"AreaChart"===n.geometry?n.type="area":"BarChart"===n.geometry&&(n.type="bar"),delete n.geometry):("scatter"===n.type?"lines"===n.mode?n.geometry="LinePlot":"markers"===n.mode?n.geometry="DotPlot":"lines+markers"===n.mode&&(n.geometry="LinePlot",n.dotVisible=!0):"area"===n.type?n.geometry="AreaChart":"bar"===n.type&&(n.geometry="BarChart"),delete n.mode,delete n.type),n}),!e&&t.layout&&"stack"===t.layout.barmode)){var n=a.util.duplicates(r.data.map(function(t,e){return t.geometry}));r.data.forEach(function(t,e){var i=n.indexOf(t.geometry);-1!=i&&(r.data[e].groupId=i)})}if(t.layout){var s=o({},t.layout),l=[[s,["plot_bgcolor"],["backgroundColor"]],[s,["showlegend"],["showLegend"]],[s,["radialaxis"],["radialAxis"]],[s,["angularaxis"],["angularAxis"]],[s.angularaxis,["showline"],["gridLinesVisible"]],[s.angularaxis,["showticklabels"],["labelsVisible"]],[s.angularaxis,["nticks"],["ticksCount"]],[s.angularaxis,["tickorientation"],["tickOrientation"]],[s.angularaxis,["ticksuffix"],["ticksSuffix"]],[s.angularaxis,["range"],["domain"]],[s.angularaxis,["endpadding"],["endPadding"]],[s.radialaxis,["showline"],["gridLinesVisible"]],[s.radialaxis,["tickorientation"],["tickOrientation"]],[s.radialaxis,["ticksuffix"],["ticksSuffix"]],[s.radialaxis,["range"],["domain"]],[s.angularAxis,["showline"],["gridLinesVisible"]],[s.angularAxis,["showticklabels"],["labelsVisible"]],[s.angularAxis,["nticks"],["ticksCount"]],[s.angularAxis,["tickorientation"],["tickOrientation"]],[s.angularAxis,["ticksuffix"],["ticksSuffix"]],[s.angularAxis,["range"],["domain"]],[s.angularAxis,["endpadding"],["endPadding"]],[s.radialAxis,["showline"],["gridLinesVisible"]],[s.radialAxis,["tickorientation"],["tickOrientation"]],[s.radialAxis,["ticksuffix"],["ticksSuffix"]],[s.radialAxis,["range"],["domain"]],[s.font,["outlinecolor"],["outlineColor"]],[s.legend,["traceorder"],["reverseOrder"]],[s,["labeloffset"],["labelOffset"]],[s,["defaultcolorrange"],["defaultColorRange"]]];if(l.forEach(function(t,r){a.util.translator.apply(null,t.concat(e))}),e?("undefined"!=typeof s.tickLength&&(s.angularaxis.ticklen=s.tickLength,delete s.tickLength),s.tickColor&&(s.angularaxis.tickcolor=s.tickColor,delete s.tickColor)):(s.angularAxis&&"undefined"!=typeof s.angularAxis.ticklen&&(s.tickLength=s.angularAxis.ticklen),s.angularAxis&&"undefined"!=typeof s.angularAxis.tickcolor&&(s.tickColor=s.angularAxis.tickcolor)),s.legend&&"boolean"!=typeof s.legend.reverseOrder&&(s.legend.reverseOrder="normal"!=s.legend.reverseOrder),s.legend&&"boolean"==typeof s.legend.traceorder&&(s.legend.traceorder=s.legend.traceorder?"reversed":"normal",delete s.legend.reverseOrder),s.margin&&"undefined"!=typeof s.margin.t){var u=["t","r","b","l","pad"],c=["top","right","bottom","left","pad"],f={};i.entries(s.margin).forEach(function(t,e){f[c[u.indexOf(t.key)]]=t.value}),s.margin=f}e&&(delete s.needsEndSpacing,delete s.minorTickColor,delete s.minorTicks,delete s.angularaxis.ticksCount,delete s.angularaxis.ticksCount,delete s.angularaxis.ticksStep,delete s.angularaxis.rewriteTicks,delete s.angularaxis.nticks,delete s.radialaxis.ticksCount,delete s.radialaxis.ticksCount,delete s.radialaxis.ticksStep,delete s.radialaxis.rewriteTicks,delete s.radialaxis.nticks),r.layout=s}return r},t}},{"../../plotly":276,"./micropolar_manager":307,d3:62}],307:[function(t,e,r){"use strict";var n=t("../../plotly"),i=t("d3"),a=t("./undo_manager"),o=e.exports={},s=n.Lib.extendDeepAll;o.framework=function(t){function e(e,a){return a&&(f=a),i.select(i.select(f).node().parentNode).selectAll(".svg-container>*:not(.chart-root)").remove(),r=r?s(r,e):e,u||(u=n.micropolar.Axis()),c=n.micropolar.adapter.plotly().convert(r),u.config(c).render(f),t.data=r.data,t.layout=r.layout,o.fillLayout(t),r}var r,l,u,c,f,h=new a;return e.isPolar=!0,e.svg=function(){return u.svg()},e.getConfig=function(){return r},e.getLiveConfig=function(){return n.micropolar.adapter.plotly().convert(u.getLiveConfig(),!0)},e.getLiveScales=function(){return{t:u.angularScale(),r:u.radialScale()}},e.setUndoPoint=function(){var 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i?(t(i,"redo"),n+=1,e&&e(i.redo),this):this},clear:function(){r=[],n=-1},hasUndo:function(){return-1!==n},hasRedo:function(){return n<r.length-1},getCommands:function(){return r},getPreviousCommand:function(){return r[n-1]},getIndex:function(){return n}}}},{}],309:[function(t,e,r){"use strict";function n(t){var e;switch(t){case"themes__thumb":e={autosize:!0,width:150,height:150,title:"",showlegend:!1,margin:{l:5,r:5,t:5,b:5,pad:0},annotations:[]};break;case"thumbnail":e={title:"",hidesources:!0,showlegend:!1,borderwidth:0,bordercolor:"",margin:{l:1,r:1,t:1,b:1,pad:0},annotations:[]};break;default:e={}}return e}function i(t){var e=["xaxis","yaxis","zaxis"];return e.indexOf(t.slice(0,5))>-1}var a=t("../plotly"),o=a.Lib.extendFlat,s=a.Lib.extendDeep;e.exports=function(t,e){t.framework&&t.framework.isPolar&&(t=t.framework.getConfig());var 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e=this.scene,r=e.xaxis,n=e.yaxis,a=this.bounds,o=this.pickXData=r.makeCalcdata(t,"x").slice(),l=this.pickYData=n.makeCalcdata(t,"y").slice();this.xData=o.slice(),this.yData=l.slice();var c,f,h,d,p,g,v,m,b=y.calcFromTrace(t,e.fullLayout),x=o.length,_=new Array(x),A=new Float32Array(2*x),k=new Float32Array(4*x),M=new Float32Array(4*x),E=0,T=0,S=0,R=0,I="log"===r.type?function(t){return r.d2l(t)}:function(t){return t},P="log"===n.type?function(t){return n.d2l(t)}:function(t){return t};for(c=0;x>c;++c)this.xData[c]=h=I(o[c]),this.yData[c]=d=P(l[c]),isNaN(h)||isNaN(d)||(_[E++]=c,A[T++]=h,A[T++]=d,p=k[S++]=h-b[c].xs||0,g=k[S++]=b[c].xh-h||0,k[S++]=0,k[S++]=0,M[R++]=0,M[R++]=0,v=M[R++]=d-b[c].ys||0,m=M[R++]=b[c].yh-d||0,a[0]=Math.min(a[0],h-p),a[1]=Math.min(a[1],d-v),a[2]=Math.max(a[2],h+g),a[3]=Math.max(a[3],d+m));A=u(A,T),this.idToIndex=_,this.updateLines(t,A),this.updateError("X",t,A,k),this.updateError("Y",t,A,M);var 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n=this.scene,i={padded:!0,ppad:r};m.expand(n.xaxis,t,i),m.expand(n.yaxis,e,i)},T.dispose=function(){this.line.dispose(),this.errorX.dispose(),this.errorY.dispose(),this.scatter.dispose(),this.fancyScatter.dispose()},e.exports=c},{"../../components/errorbars":205,"../../constants/gl2d_dashes":245,"../../constants/gl_markers":246,"../../lib":256,"../../lib/gl_format_color":254,"../../lib/str2rgbarray":268,"../../plots/cartesian/axes":279,"../scatter/get_trace_color":349,"../scatter/make_bubble_size_func":355,"../scatter/subtypes":360,"fast-isnumeric":65,"gl-error2d":70,"gl-line2d":77,"gl-scatter2d":92,"gl-scatter2d-fancy":87}],366:[function(t,e,r){"use strict";var n=t("../../lib"),i=t("../scatter/constants"),a=t("../scatter/subtypes"),o=t("../scatter/xy_defaults"),s=t("../scatter/marker_defaults"),l=t("../scatter/line_defaults"),u=t("../scatter/fillcolor_defaults"),c=t("../../components/errorbars/defaults"),f=t("./attributes");e.exports=function(t,e,r,h){function d(r,i){return 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++for(var o=67108863&r,s=Math.min(i,t.length-1),l=Math.max(0,i-this.length+1);l<=s;l++){var u=i-l,c=0|this.words[u],f=0|t.words[l],h=c*f,d=67108863&h;a=a+(h/67108864|0)|0,d=d+o|0,o=67108863&d,a=a+(d>>>26)|0,n+=a>>>26,a&=67108863}e.words[i]=o,r=a,a=n}return 0!==r?e.words[i]=r:e.length--,e.strip()},i.prototype.mulTo=function(t,e){var r;return r=this.length+t.length<63?this._smallMulTo(t,e):this._bigMulTo(t,e)},i.prototype.mul=function(t){var e=new i(null);return e.words=new Array(this.length+t.length),this.mulTo(t,e)},i.prototype.imul=function(t){if(0===this.cmpn(0)||0===t.cmpn(0))return this.words[0]=0,this.length=1,this;var e=this.length,r=t.length;this.sign=t.sign!==this.sign,this.length=this.length+t.length,this.words[this.length-1]=0;for(var n=this.length-2;n>=0;n--){for(var i=0,a=0,o=Math.min(n,r-1),s=Math.max(0,n-e+1);s<=o;s++){var l=n-s,u=this.words[l],c=t.words[s],f=u*c,h=67108863&f;i+=f/67108864|0,h+=a,a=67108863&h,i+=h>>>26}this.words[n]=a,this.words[n+1]+=i,i=0}for(var i=0,l=1;l<this.length;l++){var d=this.words[l]+i;this.words[l]=67108863&d,i=d>>>26}return this.strip()},i.prototype.imuln=function(t){r("number"==typeof t);for(var e=0,n=0;n<this.length;n++){var i=this.words[n]*t,a=(67108863&i)+(67108863&e);e>>=26,e+=i/67108864|0,e+=a>>>26,this.words[n]=67108863&a}return 0!==e&&(this.words[n]=e,this.length++),this},i.prototype.muln=function(t){return this.clone().imuln(t)},i.prototype.sqr=function(){return this.mul(this)},i.prototype.isqr=function(){return this.mul(this)},i.prototype.ishln=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=67108863>>>26-e<<26-e;if(0!==e){for(var a=0,o=0;o<this.length;o++){var s=this.words[o]&i,l=this.words[o]-s<<e;this.words[o]=l|a,a=s>>>26-e}a&&(this.words[o]=a,this.length++)}if(0!==n){for(var o=this.length-1;o>=0;o--)this.words[o+n]=this.words[o];for(var o=0;o<n;o++)this.words[o]=0;this.length+=n}return this.strip()},i.prototype.ishrn=function(t,e,n){r("number"==typeof t&&t>=0);var i;i=e?(e-e%26)/26:0;var a=t%26,o=Math.min((t-a)/26,this.length),s=67108863^67108863>>>a<<a,l=n;if(i-=o,i=Math.max(0,i),l){for(var u=0;u<o;u++)l.words[u]=this.words[u];l.length=o}if(0===o);else if(this.length>o){this.length-=o;for(var u=0;u<this.length;u++)this.words[u]=this.words[u+o]}else this.words[0]=0,this.length=1;for(var c=0,u=this.length-1;u>=0&&(0!==c||u>=i);u--){var f=this.words[u];this.words[u]=c<<26-a|f>>>a,c=f&s}return l&&0!==c&&(l.words[l.length++]=c),0===this.length&&(this.words[0]=0,this.length=1),this.strip(),this},i.prototype.shln=function(t){return this.clone().ishln(t)},i.prototype.shrn=function(t){return this.clone().ishrn(t)},i.prototype.testn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n)return!1;var a=this.words[n];return!!(a&i)},i.prototype.imaskn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26;if(r(!this.sign,"imaskn works only with positive numbers"),0!==e&&n++,this.length=Math.min(n,this.length),0!==e){var i=67108863^67108863>>>e<<e;this.words[this.length-1]&=i}return this.strip()},i.prototype.maskn=function(t){return this.clone().imaskn(t)},i.prototype.iaddn=function(t){return r("number"==typeof t),t<0?this.isubn(-t):this.sign?1===this.length&&this.words[0]<t?(this.words[0]=t-this.words[0],this.sign=!1,this):(this.sign=!1,this.isubn(t),this.sign=!0,this):this._iaddn(t)},i.prototype._iaddn=function(t){this.words[0]+=t;for(var e=0;e<this.length&&this.words[e]>=67108864;e++)this.words[e]-=67108864,e===this.length-1?this.words[e+1]=1:this.words[e+1]++;return this.length=Math.max(this.length,e+1),this},i.prototype.isubn=function(t){if(r("number"==typeof t),t<0)return this.iaddn(-t);if(this.sign)return this.sign=!1,this.iaddn(t),this.sign=!0,this;this.words[0]-=t;for(var e=0;e<this.length&&this.words[e]<0;e++)this.words[e]+=67108864,this.words[e+1]-=1;return this.strip()},i.prototype.addn=function(t){return this.clone().iaddn(t)},i.prototype.subn=function(t){return this.clone().isubn(t)},i.prototype.iabs=function(){return this.sign=!1,this},i.prototype.abs=function(){return this.clone().iabs()},i.prototype._ishlnsubmul=function(t,e,n){var i,a=t.length+n;if(this.words.length<a){for(var o=new Array(a),i=0;i<this.length;i++)o[i]=this.words[i];this.words=o}else i=this.length;for(this.length=Math.max(this.length,a);i<this.length;i++)this.words[i]=0;for(var s=0,i=0;i<t.length;i++){var l=this.words[i+n]+s,u=t.words[i]*e;l-=67108863&u,s=(l>>26)-(u/67108864|0),this.words[i+n]=67108863&l}for(;i<this.length-n;i++){var l=this.words[i+n]+s;s=l>>26,this.words[i+n]=67108863&l}if(0===s)return this.strip();r(s===-1),s=0;for(var i=0;i<this.length;i++){var l=-this.words[i]+s;s=l>>26,this.words[i]=67108863&l}return this.sign=!0,this.strip()},i.prototype._wordDiv=function(t,e){var r=this.length-t.length,n=this.clone(),a=t,o=a.words[a.length-1],s=this._countBits(o);r=26-s,0!==r&&(a=a.shln(r),n.ishln(r),o=a.words[a.length-1]);var l,u=n.length-a.length;if("mod"!==e){l=new i(null),l.length=u+1,l.words=new Array(l.length);for(var c=0;c<l.length;c++)l.words[c]=0}var f=n.clone()._ishlnsubmul(a,1,u);f.sign||(n=f,l&&(l.words[u]=1));for(var h=u-1;h>=0;h--){var d=67108864*n.words[a.length+h]+n.words[a.length+h-1];for(d=Math.min(d/o|0,67108863),n._ishlnsubmul(a,d,h);n.sign;)d--,n.sign=!1,n._ishlnsubmul(a,1,h),0!==n.cmpn(0)&&(n.sign=!n.sign);l&&(l.words[h]=d)}return l&&l.strip(),n.strip(),"div"!==e&&0!==r&&n.ishrn(r),{div:l?l:null,mod:n}},i.prototype.divmod=function(t,e){if(r(0!==t.cmpn(0)),this.sign&&!t.sign){var n,a,o=this.neg().divmod(t,e);return"mod"!==e&&(n=o.div.neg()),"div"!==e&&(a=0===o.mod.cmpn(0)?o.mod:t.sub(o.mod)),{div:n,mod:a}}if(!this.sign&&t.sign){var n,o=this.divmod(t.neg(),e);return"mod"!==e&&(n=o.div.neg()),{div:n,mod:o.mod}}return this.sign&&t.sign?this.neg().divmod(t.neg(),e):t.length>this.length||this.cmp(t)<0?{div:new i(0),mod:this}:1===t.length?"div"===e?{div:this.divn(t.words[0]),mod:null}:"mod"===e?{div:null,mod:new i(this.modn(t.words[0]))}:{div:this.divn(t.words[0]),mod:new i(this.modn(t.words[0]))}:this._wordDiv(t,e)},i.prototype.div=function(t){return this.divmod(t,"div").div},i.prototype.mod=function(t){return this.divmod(t,"mod").mod},i.prototype.divRound=function(t){var e=this.divmod(t);if(0===e.mod.cmpn(0))return e.div;var r=e.div.sign?e.mod.isub(t):e.mod,n=t.shrn(1),i=t.andln(1),a=r.cmp(n);return a<0||1===i&&0===a?e.div:e.div.sign?e.div.isubn(1):e.div.iaddn(1)},i.prototype.modn=function(t){r(t<=67108863);for(var e=(1<<26)%t,n=0,i=this.length-1;i>=0;i--)n=(e*n+this.words[i])%t;return n},i.prototype.idivn=function(t){r(t<=67108863);for(var e=0,n=this.length-1;n>=0;n--){var i=this.words[n]+67108864*e;this.words[n]=i/t|0,e=i%t}return this.strip()},i.prototype.divn=function(t){return this.clone().idivn(t)},i.prototype.egcd=function(t){r(!t.sign),r(0!==t.cmpn(0));var e=this,n=t.clone();e=e.sign?e.mod(t):e.clone();for(var a=new i(1),o=new i(0),s=new i(0),l=new i(1),u=0;e.isEven()&&n.isEven();)e.ishrn(1),n.ishrn(1),++u;for(var c=n.clone(),f=e.clone();0!==e.cmpn(0);){for(;e.isEven();)e.ishrn(1),a.isEven()&&o.isEven()?(a.ishrn(1),o.ishrn(1)):(a.iadd(c).ishrn(1),o.isub(f).ishrn(1));for(;n.isEven();)n.ishrn(1),s.isEven()&&l.isEven()?(s.ishrn(1),l.ishrn(1)):(s.iadd(c).ishrn(1),l.isub(f).ishrn(1));e.cmp(n)>=0?(e.isub(n),a.isub(s),o.isub(l)):(n.isub(e),s.isub(a),l.isub(o))}return{a:s,b:l,gcd:n.ishln(u)}},i.prototype._invmp=function(t){r(!t.sign),r(0!==t.cmpn(0));var e=this,n=t.clone();e=e.sign?e.mod(t):e.clone();for(var a=new i(1),o=new i(0),s=n.clone();e.cmpn(1)>0&&n.cmpn(1)>0;){for(;e.isEven();)e.ishrn(1),a.isEven()?a.ishrn(1):a.iadd(s).ishrn(1);for(;n.isEven();)n.ishrn(1),o.isEven()?o.ishrn(1):o.iadd(s).ishrn(1);e.cmp(n)>=0?(e.isub(n),a.isub(o)):(n.isub(e),o.isub(a))}return 0===e.cmpn(1)?a:o},i.prototype.gcd=function(t){if(0===this.cmpn(0))return t.clone();if(0===t.cmpn(0))return this.clone();var e=this.clone(),r=t.clone();e.sign=!1,r.sign=!1;for(var n=0;e.isEven()&&r.isEven();n++)e.ishrn(1),r.ishrn(1);for(;;){for(;e.isEven();)e.ishrn(1);for(;r.isEven();)r.ishrn(1);var i=e.cmp(r);if(i<0){var a=e;e=r,r=a}else if(0===i||0===r.cmpn(1))break;e.isub(r)}return r.ishln(n)},i.prototype.invm=function(t){return this.egcd(t).a.mod(t)},i.prototype.isEven=function(){return 0===(1&this.words[0])},i.prototype.isOdd=function(){return 1===(1&this.words[0])},i.prototype.andln=function(t){return this.words[0]&t},i.prototype.bincn=function(t){r("number"==typeof t);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n){for(var a=this.length;a<n+1;a++)this.words[a]=0;return this.words[n]|=i,this.length=n+1,this}for(var o=i,a=n;0!==o&&a<this.length;a++){var s=this.words[a];s+=o,o=s>>>26,s&=67108863,this.words[a]=s}return 0!==o&&(this.words[a]=o,this.length++),this},i.prototype.cmpn=function(t){var e=t<0;if(e&&(t=-t),this.sign&&!e)return-1;if(!this.sign&&e)return 1;t&=67108863,this.strip();var r;if(this.length>1)r=1;else{var n=this.words[0];r=n===t?0:n<t?-1:1}return this.sign&&(r=-r),r},i.prototype.cmp=function(t){if(this.sign&&!t.sign)return-1;if(!this.sign&&t.sign)return 1;var e=this.ucmp(t);return this.sign?-e:e},i.prototype.ucmp=function(t){if(this.length>t.length)return 1;if(this.length<t.length)return-1;for(var e=0,r=this.length-1;r>=0;r--){var n=this.words[r],i=t.words[r];if(n!==i){n<i?e=-1:n>i&&(e=1);break}}return e},i.red=function(t){return new h(t)},i.prototype.toRed=function(t){return r(!this.red,"Already a number in reduction context"),r(!this.sign,"red works only with positives"),t.convertTo(this)._forceRed(t)},i.prototype.fromRed=function(){return r(this.red,"fromRed works only with numbers in reduction context"),this.red.convertFrom(this)},i.prototype._forceRed=function(t){return this.red=t,this},i.prototype.forceRed=function(t){return r(!this.red,"Already a number in reduction context"),this._forceRed(t)},i.prototype.redAdd=function(t){return r(this.red,"redAdd works only with red numbers"),this.red.add(this,t)},i.prototype.redIAdd=function(t){return r(this.red,"redIAdd works only with red numbers"),this.red.iadd(this,t)},i.prototype.redSub=function(t){return r(this.red,"redSub works only with red numbers"),this.red.sub(this,t)},i.prototype.redISub=function(t){return r(this.red,"redISub works only with red numbers"),this.red.isub(this,t)},i.prototype.redShl=function(t){return r(this.red,"redShl works only with red numbers"),this.red.shl(this,t)},i.prototype.redMul=function(t){return r(this.red,"redMul works only with red numbers"),this.red._verify2(this,t),this.red.mul(this,t)},i.prototype.redIMul=function(t){return r(this.red,"redMul works only with red numbers"),this.red._verify2(this,t),this.red.imul(this,t)},i.prototype.redSqr=function(){return r(this.red,"redSqr works only with red numbers"),this.red._verify1(this),this.red.sqr(this)},i.prototype.redISqr=function(){return r(this.red,"redISqr works only with red numbers"),this.red._verify1(this),this.red.isqr(this)},i.prototype.redSqrt=function(){return r(this.red,"redSqrt works only with red numbers"),this.red._verify1(this),this.red.sqrt(this)},i.prototype.redInvm=function(){return r(this.red,"redInvm works only with red numbers"),this.red._verify1(this),this.red.invm(this)},i.prototype.redNeg=function(){return r(this.red,"redNeg works only with red numbers"),this.red._verify1(this),this.red.neg(this)},i.prototype.redPow=function(t){return r(this.red&&!t.red,"redPow(normalNum)"),this.red._verify1(this),this.red.pow(this,t)};var m={k256:null,p224:null,p192:null,p25519:null};s.prototype._tmp=function(){var t=new i(null);return t.words=new Array(Math.ceil(this.n/13)),t},s.prototype.ireduce=function(t){var e,r=t;do this.split(r,this.tmp),r=this.imulK(r),r=r.iadd(this.tmp),e=r.bitLength();while(e>this.n);var n=e<this.n?-1:r.ucmp(this.p);return 0===n?(r.words[0]=0,r.length=1):n>0?r.isub(this.p):r.strip(),r},s.prototype.split=function(t,e){t.ishrn(this.n,0,e)},s.prototype.imulK=function(t){return t.imul(this.k)},n(l,s),l.prototype.split=function(t,e){for(var r=4194303,n=Math.min(t.length,9),i=0;i<n;i++)e.words[i]=t.words[i];if(e.length=n,t.length<=9)return t.words[0]=0,void(t.length=1);var a=t.words[9];e.words[e.length++]=a&r;for(var i=10;i<t.length;i++){var o=t.words[i];t.words[i-10]=(o&r)<<4|a>>>22,a=o}t.words[i-10]=a>>>22,t.length-=9},l.prototype.imulK=function(t){t.words[t.length]=0,t.words[t.length+1]=0,t.length+=2;for(var e,r=0,n=0;n<t.length;n++){var i=t.words[n];e=64*i,r+=977*i,e+=r/67108864|0,r&=67108863,t.words[n]=r,r=e}return 0===t.words[t.length-1]&&(t.length--,0===t.words[t.length-1]&&t.length--),t},n(u,s),n(c,s),n(f,s),f.prototype.imulK=function(t){for(var e=0,r=0;r<t.length;r++){var n=19*t.words[r]+e,i=67108863&n;n>>>=26,t.words[r]=i,e=n}return 0!==e&&(t.words[t.length++]=e),t},i._prime=function t(e){if(m[e])return m[e];var t;if("k256"===e)t=new l;else if("p224"===e)t=new u;else if("p192"===e)t=new c;else{if("p25519"!==e)throw new Error("Unknown prime "+e);t=new f}return m[e]=t,t},h.prototype._verify1=function(t){r(!t.sign,"red works only with positives"),r(t.red,"red works only with red numbers")},h.prototype._verify2=function(t,e){r(!t.sign&&!e.sign,"red works only with positives"),r(t.red&&t.red===e.red,"red works only with red numbers")},h.prototype.imod=function(t){return this.prime?this.prime.ireduce(t)._forceRed(this):t.mod(this.m)._forceRed(this)},h.prototype.neg=function(t){var e=t.clone();return e.sign=!e.sign,e.iadd(this.m)._forceRed(this)},h.prototype.add=function(t,e){this._verify2(t,e);var r=t.add(e);return r.cmp(this.m)>=0&&r.isub(this.m),r._forceRed(this)},h.prototype.iadd=function(t,e){this._verify2(t,e);var r=t.iadd(e);return r.cmp(this.m)>=0&&r.isub(this.m),r},h.prototype.sub=function(t,e){this._verify2(t,e);var r=t.sub(e);return r.cmpn(0)<0&&r.iadd(this.m),r._forceRed(this)},h.prototype.isub=function(t,e){this._verify2(t,e);var r=t.isub(e);return r.cmpn(0)<0&&r.iadd(this.m),r},h.prototype.shl=function(t,e){return this._verify1(t),this.imod(t.shln(e))},h.prototype.imul=function(t,e){return this._verify2(t,e),this.imod(t.imul(e))},h.prototype.mul=function(t,e){return this._verify2(t,e),this.imod(t.mul(e))},h.prototype.isqr=function(t){return this.imul(t,t)},h.prototype.sqr=function(t){return this.mul(t,t)},h.prototype.sqrt=function(t){if(0===t.cmpn(0))return t.clone();var e=this.m.andln(3);if(r(e%2===1),3===e){var n=this.m.add(new i(1)).ishrn(2),a=this.pow(t,n);return a}for(var o=this.m.subn(1),s=0;0!==o.cmpn(0)&&0===o.andln(1);)s++,o.ishrn(1);r(0!==o.cmpn(0));var l=new i(1).toRed(this),u=l.redNeg(),c=this.m.subn(1).ishrn(1),f=this.m.bitLength();for(f=new i(2*f*f).toRed(this);0!==this.pow(f,c).cmp(u);)f.redIAdd(u);for(var h=this.pow(f,o),a=this.pow(t,o.addn(1).ishrn(1)),d=this.pow(t,o),p=s;0!==d.cmp(l);){for(var g=d,v=0;0!==g.cmp(l);v++)g=g.redSqr();r(v<p);var m=this.pow(h,new i(1).ishln(p-v-1));a=a.redMul(m),h=m.redSqr(),d=d.redMul(h),p=v}return a},h.prototype.invm=function(t){var e=t._invmp(this.m);return e.sign?(e.sign=!1,this.imod(e).redNeg()):this.imod(e)},h.prototype.pow=function(t,e){var r=[];if(0===e.cmpn(0))return new i(1);for(var n=e.clone();0!==n.cmpn(0);)r.push(n.andln(1)),n.ishrn(1);for(var a=t,o=0;o<r.length&&0===r[o];o++,a=this.sqr(a));if(++o<r.length)for(var n=this.sqr(a);o<r.length;o++,n=this.sqr(n))0!==r[o]&&(a=this.mul(a,n));return a},h.prototype.convertTo=function(t){var e=t.mod(this.m);return e===t?e.clone():e},h.prototype.convertFrom=function(t){var e=t.clone();return e.red=null,e},i.mont=function(t){return new d(t)},n(d,h),d.prototype.convertTo=function(t){return this.imod(t.shln(this.shift))},d.prototype.convertFrom=function(t){var e=this.imod(t.mul(this.rinv));return e.red=null,e},d.prototype.imul=function(t,e){if(0===t.cmpn(0)||0===e.cmpn(0))return t.words[0]=0,t.length=1,t;var r=t.imul(e),n=r.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m),i=r.isub(n).ishrn(this.shift),a=i;return i.cmp(this.m)>=0?a=i.isub(this.m):i.cmpn(0)<0&&(a=i.iadd(this.m)),a._forceRed(this)},d.prototype.mul=function(t,e){if(0===t.cmpn(0)||0===e.cmpn(0))return new i(0)._forceRed(this);var r=t.mul(e),n=r.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m),a=r.isub(n).ishrn(this.shift),o=a;return a.cmp(this.m)>=0?o=a.isub(this.m):a.cmpn(0)<0&&(o=a.iadd(this.m)),o._forceRed(this)},d.prototype.invm=function(t){var e=this.imod(t._invmp(this.m).mul(this.r2));return 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l=t("typedarray-pool"),u=t("ndarray-ops"),c=t("ndarray"),f=["uint8","uint8_clamped","uint16","uint32","int8","int16","int32","float32"],h=n.prototype;h.bind=function(){this.gl.bindBuffer(this.type,this.handle)},h.unbind=function(){this.gl.bindBuffer(this.type,null)},h.dispose=function(){this.gl.deleteBuffer(this.handle)},h.update=function(t,e){if("number"!=typeof e&&(e=-1),this.bind(),"object"==typeof t&&"undefined"!=typeof t.shape){var r=t.dtype;if(f.indexOf(r)<0&&(r="float32"),this.type===this.gl.ELEMENT_ARRAY_BUFFER){var n=gl.getExtension("OES_element_index_uint");r=n&&"uint16"!==r?"uint32":"uint16"}if(r===t.dtype&&o(t.shape,t.stride))0===t.offset&&t.data.length===t.shape[0]?this.length=i(this.gl,this.type,this.length,this.usage,t.data,e):this.length=i(this.gl,this.type,this.length,this.usage,t.data.subarray(t.offset,t.shape[0]),e);else{var s=l.malloc(t.size,r),h=c(s,t.shape);u.assign(h,t),e<0?this.length=i(this.gl,this.type,this.length,this.usage,s,e):this.length=i(this.gl,this.type,this.length,this.usage,s.subarray(0,t.size),e),l.free(s)}}else if(Array.isArray(t)){var d;d=this.type===this.gl.ELEMENT_ARRAY_BUFFER?a(t,"uint16"):a(t,"float32"),e<0?this.length=i(this.gl,this.type,this.length,this.usage,d,e):this.length=i(this.gl,this.type,this.length,this.usage,d.subarray(0,t.length),e),l.free(d)}else if("object"==typeof t&&"number"==typeof t.length)this.length=i(this.gl,this.type,this.length,this.usage,t,e);else{if("number"!=typeof t&&void 0!==t)throw new Error("gl-buffer: Invalid data type");if(e>=0)throw new Error("gl-buffer: Cannot specify offset when resizing buffer");t=0|t,t<=0&&(t=1),this.gl.bufferData(this.type,0|t,this.usage),this.length=t}},e.exports=s},{ndarray:123,"ndarray-ops":122,"typedarray-pool":162}],64:[function(t,e,r){e.exports={0:"NONE",1:"ONE",2:"LINE_LOOP",3:"LINE_STRIP",4:"TRIANGLES",5:"TRIANGLE_STRIP",6:"TRIANGLE_FAN",256:"DEPTH_BUFFER_BIT",512:"NEVER",513:"LESS",514:"EQUAL",515:"LEQUAL",516:"GREATER",517:"NOTEQUAL",518:"GEQUAL",519:"ALWAYS",768:"SRC_COLOR",769:"ONE_MINUS_SRC_COLOR",770:"SRC_ALPHA",771:"ONE_MINUS_SRC_ALPHA",772:"DST_ALPHA",773:"ONE_MINUS_DST_ALPHA",774:"DST_COLOR",775:"ONE_MINUS_DST_COLOR",776:"SRC_ALPHA_SATURATE",1024:"STENCIL_BUFFER_BIT",1028:"FRONT",1029:"BACK",1032:"FRONT_AND_BACK",1280:"INVALID_ENUM",1281:"INVALID_VALUE",1282:"INVALID_OPERATION",1285:"OUT_OF_MEMORY",1286:"INVALID_FRAMEBUFFER_OPERATION",2304:"CW",2305:"CCW",2849:"LINE_WIDTH",2884:"CULL_FACE",2885:"CULL_FACE_MODE",2886:"FRONT_FACE",2928:"DEPTH_RANGE",2929:"DEPTH_TEST",2930:"DEPTH_WRITEMASK",2931:"DEPTH_CLEAR_VALUE",2932:"DEPTH_FUNC",2960:"STENCIL_TEST",2961:"STENCIL_CLEAR_VALUE",2962:"STENCIL_FUNC",2963:"STENCIL_VALUE_MASK",2964:"STENCIL_FAIL",2965:"STENCIL_PASS_DEPTH_FAIL",2966:"STENCIL_PASS_DEPTH_PASS",2967:"STENCIL_REF",2968:"STENCIL_WRITEMASK",2978:"VIEWPORT",3024:"DITHER",3042:"BLEND",3088:"SCISSOR_BOX",3089:"SCISSOR_TEST",3106:"COLOR_CLEAR_VALUE",3107:"COLOR_WRITEMASK",3317:"UNPACK_ALIGNMENT",3333:"PACK_ALIGNMENT",3379:"MAX_TEXTURE_SIZE",3386:"MAX_VIEWPORT_DIMS",3408:"SUBPIXEL_BITS",3410:"RED_BITS",3411:"GREEN_BITS",3412:"BLUE_BITS",3413:"ALPHA_BITS",3414:"DEPTH_BITS",3415:"STENCIL_BITS",3553:"TEXTURE_2D",4352:"DONT_CARE",4353:"FASTEST",4354:"NICEST",5120:"BYTE",5121:"UNSIGNED_BYTE",5122:"SHORT",5123:"UNSIGNED_SHORT",5124:"INT",5125:"UNSIGNED_INT",5126:"FLOAT",5386:"INVERT",5890:"TEXTURE",6401:"STENCIL_INDEX",6402:"DEPTH_COMPONENT",6406:"ALPHA",6407:"RGB",6408:"RGBA",6409:"LUMINANCE",6410:"LUMINANCE_ALPHA",7680:"KEEP",7681:"REPLACE",7682:"INCR",7683:"DECR",7936:"VENDOR",7937:"RENDERER",7938:"VERSION",9728:"NEAREST",9729:"LINEAR",9984:"NEAREST_MIPMAP_NEAREST",9985:"LINEAR_MIPMAP_NEAREST",9986:"NEAREST_MIPMAP_LINEAR",9987:"LINEAR_MIPMAP_LINEAR",10240:"TEXTURE_MAG_FILTER",10241:"TEXTURE_MIN_FILTER",10242:"TEXTURE_WRAP_S",10243:"TEXTURE_WRAP_T",10497:"REPEAT",10752:"POLYGON_OFFSET_UNITS",16384:"COLOR_BUFFER_BIT",32769:"CONSTANT_COLOR",32770:"ONE_MINUS_CONSTANT_COLOR",32771:"CONSTANT_ALPHA",32772:"ONE_MINUS_CONSTANT_ALPHA",32773:"BLEND_COLOR",32774:"FUNC_ADD",32777:"BLEND_EQUATION_RGB",32778:"FUNC_SUBTRACT",32779:"FUNC_REVERSE_SUBTRACT",32819:"UNSIGNED_SHORT_4_4_4_4",32820:"UNSIGNED_SHORT_5_5_5_1",32823:"POLYGON_OFFSET_FILL",32824:"POLYGON_OFFSET_FACTOR",32854:"RGBA4",32855:"RGB5_A1",32873:"TEXTURE_BINDING_2D",32926:"SAMPLE_ALPHA_TO_COVERAGE",32928:"SAMPLE_COVERAGE",32936:"SAMPLE_BUFFERS",32937:"SAMPLES",32938:"SAMPLE_COVERAGE_VALUE",32939:"SAMPLE_COVERAGE_INVERT",32968:"BLEND_DST_RGB",32969:"BLEND_SRC_RGB",32970:"BLEND_DST_ALPHA",32971:"BLEND_SRC_ALPHA",33071:"CLAMP_TO_EDGE",33170:"GENERATE_MIPMAP_HINT",33189:"DEPTH_COMPONENT16",33306:"DEPTH_STENCIL_ATTACHMENT",33635:"UNSIGNED_SHORT_5_6_5",33648:"MIRRORED_REPEAT",33901:"ALIASED_POINT_SIZE_RANGE",33902:"ALIASED_LINE_WIDTH_RANGE",33984:"TEXTURE0",33985:"TEXTURE1",33986:"TEXTURE2",33987:"TEXTURE3",33988:"TEXTURE4",33989:"TEXTURE5",33990:"TEXTURE6",33991:"TEXTURE7",33992:"TEXTURE8",33993:"TEXTURE9",33994:"TEXTURE10",33995:"TEXTURE11",33996:"TEXTURE12",33997:"TEXTURE13",33998:"TEXTURE14",33999:"TEXTURE15",34e3:"TEXTURE16",34001:"TEXTURE17",34002:"TEXTURE18",34003:"TEXTURE19",34004:"TEXTURE20",34005:"TEXTURE21",34006:"TEXTURE22",34007:"TEXTURE23",34008:"TEXTURE24",34009:"TEXTURE25",34010:"TEXTURE26",34011:"TEXTURE27",34012:"TEXTURE28",34013:"TEXTURE29",34014:"TEXTURE30",34015:"TEXTURE31",34016:"ACTIVE_TEXTURE",34024:"MAX_RENDERBUFFER_SIZE",34041:"DEPTH_STENCIL",34055:"INCR_WRAP",34056:"DECR_WRAP",34067:"TEXTURE_CUBE_MAP",34068:"TEXTURE_BINDING_CUBE_MAP",34069:"TEXTURE_CUBE_MAP_POSITIVE_X",34070:"TEXTURE_CUBE_MAP_NEGATIVE_X",34071:"TEXTURE_CUBE_MAP_POSITIVE_Y",34072:"TEXTURE_CUBE_MAP_NEGATIVE_Y",34073:"TEXTURE_CUBE_MAP_POSITIVE_Z",34074:"TEXTURE_CUBE_MAP_NEGATIVE_Z",34076:"MAX_CUBE_MAP_TEXTURE_SIZE",34338:"VERTEX_ATTRIB_ARRAY_ENABLED",34339:"VERTEX_ATTRIB_ARRAY_SIZE",34340:"VERTEX_ATTRIB_ARRAY_STRIDE",34341:"VERTEX_ATTRIB_ARRAY_TYPE",34342:"CURRENT_VERTEX_ATTRIB",34373:"VERTEX_ATTRIB_ARRAY_POINTER",34466:"NUM_COMPRESSED_TEXTURE_FORMATS",34467:"COMPRESSED_TEXTURE_FORMATS",34660:"BUFFER_SIZE",34661:"BUFFER_USAGE",34816:"STENCIL_BACK_FUNC",34817:"STENCIL_BACK_FAIL",34818:"STENCIL_BACK_PASS_DEPTH_FAIL",34819:"STENCIL_BACK_PASS_DEPTH_PASS",34877:"BLEND_EQUATION_ALPHA",34921:"MAX_VERTEX_ATTRIBS",34922:"VERTEX_ATTRIB_ARRAY_NORMALIZED",34930:"MAX_TEXTURE_IMAGE_UNITS",34962:"ARRAY_BUFFER",34963:"ELEMENT_ARRAY_BUFFER",34964:"ARRAY_BUFFER_BINDING",34965:"ELEMENT_ARRAY_BUFFER_BINDING",34975:"VERTEX_ATTRIB_ARRAY_BUFFER_BINDING",35040:"STREAM_DRAW",35044:"STATIC_DRAW",35048:"DYNAMIC_DRAW",35632:"FRAGMENT_SHADER",35633:"VERTEX_SHADER",35660:"MAX_VERTEX_TEXTURE_IMAGE_UNITS",35661:"MAX_COMBINED_TEXTURE_IMAGE_UNITS",35663:"SHADER_TYPE",35664:"FLOAT_VEC2",35665:"FLOAT_VEC3",35666:"FLOAT_VEC4",35667:"INT_VEC2",35668:"INT_VEC3",35669:"INT_VEC4",35670:"BOOL",35671:"BOOL_VEC2",35672:"BOOL_VEC3",35673:"BOOL_VEC4",35674:"FLOAT_MAT2",35675:"FLOAT_MAT3",35676:"FLOAT_MAT4",35678:"SAMPLER_2D",35680:"SAMPLER_CUBE",35712:"DELETE_STATUS",35713:"COMPILE_STATUS",35714:"LINK_STATUS",35715:"VALIDATE_STATUS",35716:"INFO_LOG_LENGTH",35717:"ATTACHED_SHADERS",35718:"ACTIVE_UNIFORMS",35719:"ACTIVE_UNIFORM_MAX_LENGTH",35720:"SHADER_SOURCE_LENGTH",35721:"ACTIVE_ATTRIBUTES",35722:"ACTIVE_ATTRIBUTE_MAX_LENGTH",35724:"SHADING_LANGUAGE_VERSION",35725:"CURRENT_PROGRAM",36003:"STENCIL_BACK_REF",36004:"STENCIL_BACK_VALUE_MASK",36005:"STENCIL_BACK_WRITEMASK",36006:"FRAMEBUFFER_BINDING",36007:"RENDERBUFFER_BINDING",36048:"FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE",36049:"FRAMEBUFFER_ATTACHMENT_OBJECT_NAME",36050:"FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL",36051:"FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE",36053:"FRAMEBUFFER_COMPLETE",36054:"FRAMEBUFFER_INCOMPLETE_ATTACHMENT",36055:"FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT",36057:"FRAMEBUFFER_INCOMPLETE_DIMENSIONS",36061:"FRAMEBUFFER_UNSUPPORTED",36064:"COLOR_ATTACHMENT0",36096:"DEPTH_ATTACHMENT",36128:"STENCIL_ATTACHMENT",36160:"FRAMEBUFFER",36161:"RENDERBUFFER",36162:"RENDERBUFFER_WIDTH",36163:"RENDERBUFFER_HEIGHT",36164:"RENDERBUFFER_INTERNAL_FORMAT",36168:"STENCIL_INDEX8",36176:"RENDERBUFFER_RED_SIZE",36177:"RENDERBUFFER_GREEN_SIZE",36178:"RENDERBUFFER_BLUE_SIZE",36179:"RENDERBUFFER_ALPHA_SIZE",36180:"RENDERBUFFER_DEPTH_SIZE",36181:"RENDERBUFFER_STENCIL_SIZE",36194:"RGB565",36336:"LOW_FLOAT",36337:"MEDIUM_FLOAT",36338:"HIGH_FLOAT",36339:"LOW_INT",36340:"MEDIUM_INT",36341:"HIGH_INT",36346:"SHADER_COMPILER",36347:"MAX_VERTEX_UNIFORM_VECTORS",36348:"MAX_VARYING_VECTORS",36349:"MAX_FRAGMENT_UNIFORM_VECTORS",37440:"UNPACK_FLIP_Y_WEBGL",37441:"UNPACK_PREMULTIPLY_ALPHA_WEBGL",37442:"CONTEXT_LOST_WEBGL",37443:"UNPACK_COLORSPACE_CONVERSION_WEBGL",37444:"BROWSER_DEFAULT_WEBGL"}},{}],65:[function(t,e,r){var n=t("./1.0/numbers");e.exports=function(t){return n[t]}},{"./1.0/numbers":64}],66:[function(t,e,r){"use strict";function n(t,e,r,n,i,a,o,s,l){
++this.plot=t,this.shader=e,this.fillShader=r,this.pickShader=n,this.positionBuffer=i,this.colorBuffer=a,this.idBuffer=o,this.fillPositionBuffer=s,this.fillColorBuffer=l,this.fillVerts=0,this.xData=[],this.yData=[],this.shape=[0,0],this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.pickOffset=0,this.numVertices=0,this.lineWidth=1}function i(t,e){var r=Math.floor(e);if(r<0)return t[0];if(r>=t.length-1)return t[t.length-1];var n=e-r;return(1-n)*t[r]+n*t[r+1]}function a(t,e){var r=t.gl,i=s(r,p.vertex,p.fragment),a=s(r,p.pickVertex,p.pickFragment),o=s(r,p.fillVertex,p.fragment),u=l(r),c=l(r),f=l(r),h=l(r),d=l(r),g=new n(t,i,o,a,u,c,f,h,d);return g.update(e),t.addObject(g),g}e.exports=a;var o=t("iota-array"),s=t("gl-shader"),l=t("gl-buffer"),u=t("ndarray"),c=t("surface-nets"),f=t("cdt2d"),h=t("clean-pslg"),d=t("binary-search-bounds"),p=t("./lib/shaders"),g=n.prototype,v=[1,0,0,0,0,1,1,0,1,1,0,1];g.draw=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0];return function(){var r,n,i=this.plot,a=this.shader,o=this.fillShader,s=this.bounds,l=this.numVertices,u=this.fillVerts,c=i.gl,f=i.viewBox,h=i.dataBox,d=s[2]-s[0],p=s[3]-s[1],g=h[2]-h[0],v=h[3]-h[1];if(t[0]=2*d/g,t[4]=2*p/v,t[6]=2*(s[0]-h[0])/g-1,t[7]=2*(s[1]-h[1])/v-1,e[0]=f[2]-f[0],e[1]=f[3]-f[1],u>0&&(o.bind(),r=o.uniforms,r.viewTransform=t,r.screenShape=e,n=a.attributes,this.fillPositionBuffer.bind(),n.position.pointer(),this.fillColorBuffer.bind(),n.color.pointer(c.UNSIGNED_BYTE,!0),c.drawArrays(c.TRIANGLES,0,u)),l>0){a.bind();var m=this.lineWidth*i.pixelRatio;r=a.uniforms,r.viewTransform=t,r.screenShape=e,r.lineWidth=m,r.pointSize=1e3,n=a.attributes,this.positionBuffer.bind(),n.position.pointer(c.FLOAT,!1,16,0),n.tangent.pointer(c.FLOAT,!1,16,8),this.colorBuffer.bind(),n.color.pointer(c.UNSIGNED_BYTE,!0),c.drawArrays(c.TRIANGLES,0,l),r.lineWidth=0,r.pointSize=m,this.positionBuffer.bind(),n.position.pointer(c.FLOAT,!1,48,0),n.tangent.pointer(c.FLOAT,!1,48,8),this.colorBuffer.bind(),n.color.pointer(c.UNSIGNED_BYTE,!0,12,0),c.drawArrays(c.POINTS,0,l/3)}}}(),g.drawPick=function(){return function(t){return t}}(),g.pick=function(t,e,r){return null},g.update=function(t){function e(t,e,r,n){var i=n-r;return Math.abs(i)<1e-6?e:Math.floor(e)+Math.max(.001,Math.min(.999,(t-r)/i))}t=t||{};var r=t.shape||[0,0],n=t.x||o(r[0]),a=t.y||o(r[1]),s=t.z||new Float32Array(r[0]*r[1]),l=t.levels||[],p=t.levelColors||[],g=this.bounds,m=g[0]=n[0],y=g[1]=a[0],b=g[2]=n[n.length-1],x=g[3]=a[a.length-1];m===b&&(g[2]+=1,b+=1),y===x&&(g[3]+=1,x+=1);var _=1/(b-m),w=1/(x-y);this.xData=n,this.yData=a,this.lineWidth=t.lineWidth||1;for(var A=u(s,r),k=[],M=[],E=[],T=[],L=[[0,0],[r[0]-1,0],[0,r[1]-1],[r[0]-1,r[1]-1]],S=0;S<l.length;++S){var C=l[S];if(!(S>0&&C===l[S-1])){for(var R=c(A,C),I=255*p[4*S]|0,P=255*p[4*S+1]|0,O=255*p[4*S+2]|0,N=255*p[4*S+3]|0,z=R.cells,D=R.positions,F=Array(D.length),B=0;B<F.length;++B)F[B]=0;for(B=0;B<z.length;++B){var j=z[B];F[j[0]]+=1,F[j[1]]+=1}for(B=0;B<F.length;++B){var U=F[B];if(0!==U){var V=D[B];if(F[B]=L.length,L.push(V),!(U>1)){var q,H=V[0],G=V[1],X=A.get(Math.floor(H),Math.floor(G)),Y=A.get(Math.floor(H),Math.ceil(G)),W=A.get(Math.ceil(H),Math.floor(G)),Z=A.get(Math.ceil(H),Math.ceil(G));0===Math.floor(V[0])&&X<=C!=Y<C?q=[0,e(C,V[1],X,Y)]:Math.ceil(V[0])===r[0]-1&&W<=C!=Z<C?q=[r[0]-1,e(C,V[1],W,Z)]:0===Math.floor(V[1])&&X<=C!=W<C?q=[e(C,V[0],X,W),0]:Math.ceil(V[1])===r[1]-1&&Y<=C!=Z<C&&(q=[e(C,V[0],Y,Z),r[1]-1]),q&&(z.push([B,D.length]),F.push(L.length),D.push(q))}}}for(B=0;B<z.length;++B){var Q=z[B],$=D[Q[0]],K=D[Q[1]];T.push([F[Q[0]],F[Q[1]]]);var J=Math.round($[0])+r[0]*Math.round($[1]),tt=i(n,$[0]),et=i(a,$[1]),rt=i(n,K[0]),nt=i(a,K[1]);tt=_*(tt-m),et=w*(et-y),rt=_*(rt-m),nt=w*(nt-y);for(var it=tt-rt,at=et-nt,ot=0;ot<v.length;ot+=2){var st=v[ot],lt=1-st,ut=2*v[ot+1]-1;k.push(lt*tt+st*rt,lt*et+st*nt,ut*it,ut*at),M.push(I,P,O,N),E.push(J)}}}}this.positionBuffer.update(new Float32Array(k)),this.colorBuffer.update(new Uint8Array(M)),this.idBuffer.update(new Uint32Array(E)),this.numVertices=E.length;var ct=t.fillColors,ft=[],ht=[],dt=0;if(ct){h(L,T);var pt=f(L,T,{delaunay:!1});for(S=0;S<pt.length;++S){var gt=pt[S],vt=0,mt=0;for(B=0;B<3;++B){var yt=L[gt[B]],bt=i(n,yt[0]),xt=i(a,yt[1]);vt+=yt[0],mt+=yt[1],ht.push(_*(bt-m),w*(xt-y))}vt/=3,mt/=3;var _t=Math.floor(vt),wt=Math.floor(mt),At=vt-_t,kt=mt-wt,Mt=A.get(_t,wt),Et=A.get(_t,wt+1),Tt=A.get(_t+1,wt),Lt=A.get(_t+1,wt+1),St=(1-kt)*((1-At)*Mt+At*Tt)+kt*((1-At)*Et+At*Lt),Ct=d.le(l,St)+1,Rt=255*ct[4*Ct+0]|0,It=255*ct[4*Ct+1]|0,Pt=255*ct[4*Ct+2]|0,Ot=255*ct[4*Ct+3]|0;ft.push(Rt,It,Pt,Ot,Rt,It,Pt,Ot,Rt,It,Pt,Ot),dt+=3}this.fillPositionBuffer.update(new Float32Array(ht)),this.fillColorBuffer.update(new Uint8Array(ft)),this.fillVerts=dt}},g.dispose=function(){this.plot.removeObject(this)}},{"./lib/shaders":67,"binary-search-bounds":68,cdt2d:40,"clean-pslg":46,"gl-buffer":63,"gl-shader":96,"iota-array":116,ndarray:123,"surface-nets":155}],67:[function(t,e,r){"use strict";e.exports={fragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 tangent;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 screenShape;\nuniform float lineWidth;\nuniform float pointSize;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  fragColor = color;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  vec2 vTangent = normalize(viewTransform * vec3(tangent, 0)).xy;\n  vec2 offset = vec2(vTangent.y, -vTangent.x) / screenShape;\n\n  gl_Position = vec4(\n    vPosition.xy + offset * lineWidth * vPosition.z,\n    0,\n    vPosition.z);\n\n  gl_PointSize = pointSize;\n}\n",pickFragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragId;\nvoid main() {\n  gl_FragColor = fragId;\n}\n",pickVertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 viewTransform;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id / 255.0;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n",fillVertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  fragColor = color;\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n"}},{}],68:[function(t,e,r){arguments[4][45][0].apply(r,arguments)},{dup:45}],69:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.shader=e,this.buffer=r,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.numPoints=0,this.color=[0,0,0,1]}function i(t,e){var r=a(t.gl,l.vertex,l.fragment),i=o(t.gl),s=new n(t,r,i);return s.update(e),t.addObject(s),s}var a=t("gl-shader"),o=t("gl-buffer"),s=t("typedarray-pool"),l=t("./lib/shaders");e.exports=i;var u=[[1,0,0,1,0,0],[1,0,0,-1,0,0],[-1,0,0,-1,0,0],[-1,0,0,-1,0,0],[-1,0,0,1,0,0],[1,0,0,1,0,0],[1,0,-1,0,0,1],[1,0,-1,0,0,-1],[1,0,1,0,0,-1],[1,0,1,0,0,-1],[1,0,1,0,0,1],[1,0,-1,0,0,1],[-1,0,-1,0,0,1],[-1,0,-1,0,0,-1],[-1,0,1,0,0,-1],[-1,0,1,0,0,-1],[-1,0,1,0,0,1],[-1,0,-1,0,0,1],[0,1,1,0,0,0],[0,1,-1,0,0,0],[0,-1,-1,0,0,0],[0,-1,-1,0,0,0],[0,1,1,0,0,0],[0,-1,1,0,0,0],[0,1,0,-1,1,0],[0,1,0,-1,-1,0],[0,1,0,1,-1,0],[0,1,0,1,1,0],[0,1,0,-1,1,0],[0,1,0,1,-1,0],[0,-1,0,-1,1,0],[0,-1,0,-1,-1,0],[0,-1,0,1,-1,0],[0,-1,0,1,1,0],[0,-1,0,-1,1,0],[0,-1,0,1,-1,0]],c=n.prototype;c.draw=function(){var t=[1,0,0,0,1,0,0,0,1],e=[1,1];return function(){var r=this.plot,n=this.shader,i=this.buffer,a=this.bounds,o=this.numPoints;if(o){var s=r.gl,l=r.dataBox,c=r.viewBox,f=r.pixelRatio,h=a[2]-a[0],d=a[3]-a[1],p=l[2]-l[0],g=l[3]-l[1];t[0]=2*h/p,t[4]=2*d/g,t[6]=2*(a[0]-l[0])/p-1,t[7]=2*(a[1]-l[1])/g-1;var v=c[2]-c[0],m=c[3]-c[1];e[0]=2*f/v,e[1]=2*f/m,i.bind(),n.bind(),n.uniforms.viewTransform=t,n.uniforms.pixelScale=e,n.uniforms.color=this.color,n.attributes.position.pointer(s.FLOAT,!1,16,0),n.attributes.pixelOffset.pointer(s.FLOAT,!1,16,8),s.drawArrays(s.TRIANGLES,0,o*u.length)}}}(),c.drawPick=function(t){return t},c.pick=function(t,e){return null},c.update=function(t){t=t||{};var e,r,n,i=t.positions||[],a=t.errors||[],o=1;"lineWidth"in t&&(o=+t.lineWidth);var l=5;"capSize"in t&&(l=+t.capSize),this.color=(t.color||[0,0,0,1]).slice();var c=this.bounds=[1/0,1/0,-(1/0),-(1/0)],f=this.numPoints=i.length>>1;for(e=0;e<f;++e)r=i[2*e],n=i[2*e+1],c[0]=Math.min(r,c[0]),c[1]=Math.min(n,c[1]),c[2]=Math.max(r,c[2]),c[3]=Math.max(n,c[3]);c[2]===c[0]&&(c[2]+=1),c[3]===c[1]&&(c[3]+=1);var h=1/(c[2]-c[0]),d=1/(c[3]-c[1]),p=c[0],g=c[1],v=s.mallocFloat32(f*u.length*4),m=0;for(e=0;e<f;++e){r=i[2*e],n=i[2*e+1];for(var y=a[4*e],b=a[4*e+1],x=a[4*e+2],_=a[4*e+3],w=0;w<u.length;++w){var A=u[w],k=A[0],M=A[1];k<0?k*=y:k>0&&(k*=b),M<0?M*=x:M>0&&(M*=_),v[m++]=h*(r-p+k),v[m++]=d*(n-g+M),v[m++]=o*A[2]+(l+o)*A[4],v[m++]=o*A[3]+(l+o)*A[5]}}this.buffer.update(v),s.free(v)},c.dispose=function(){this.plot.removeObject(this),this.shader.dispose(),this.buffer.dispose()}},{"./lib/shaders":70,"gl-buffer":63,"gl-shader":96,"typedarray-pool":162}],70:[function(t,e,r){e.exports={vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 pixelOffset;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvoid main() {\n  vec3 scrPosition = viewTransform * vec3(position, 1);\n  gl_Position = vec4(\n    scrPosition.xy + scrPosition.z * pixelScale * pixelOffset,\n    0,\n    scrPosition.z);\n}\n",fragment:"precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"}},{}],71:[function(t,e,r){"use strict";function n(t){var e=t.getParameter(t.FRAMEBUFFER_BINDING),r=t.getParameter(t.RENDERBUFFER_BINDING),n=t.getParameter(t.TEXTURE_BINDING_2D);return[e,r,n]}function i(t,e){t.bindFramebuffer(t.FRAMEBUFFER,e[0]),t.bindRenderbuffer(t.RENDERBUFFER,e[1]),t.bindTexture(t.TEXTURE_2D,e[2])}function a(t,e){var r=t.getParameter(e.MAX_COLOR_ATTACHMENTS_WEBGL);y=new Array(r+1);for(var n=0;n<=r;++n){for(var i=new Array(r),a=0;a<n;++a)i[a]=t.COLOR_ATTACHMENT0+a;for(var a=n;a<r;++a)i[a]=t.NONE;y[n]=i}}function o(t){switch(t){case p:throw new Error("gl-fbo: Framebuffer unsupported");case g:throw new Error("gl-fbo: Framebuffer incomplete attachment");case v:throw new Error("gl-fbo: Framebuffer incomplete dimensions");case m:throw new Error("gl-fbo: Framebuffer incomplete missing attachment");default:throw new Error("gl-fbo: Framebuffer failed for unspecified reason")}}function s(t,e,r,n,i,a){if(!n)return null;var o=d(t,e,r,i,n);return o.magFilter=t.NEAREST,o.minFilter=t.NEAREST,o.mipSamples=1,o.bind(),t.framebufferTexture2D(t.FRAMEBUFFER,a,t.TEXTURE_2D,o.handle,0),o}function l(t,e,r,n,i){var a=t.createRenderbuffer();return t.bindRenderbuffer(t.RENDERBUFFER,a),t.renderbufferStorage(t.RENDERBUFFER,n,e,r),t.framebufferRenderbuffer(t.FRAMEBUFFER,i,t.RENDERBUFFER,a),a}function u(t){var e=n(t.gl),r=t.gl,a=t.handle=r.createFramebuffer(),u=t._shape[0],c=t._shape[1],f=t.color.length,h=t._ext,d=t._useStencil,p=t._useDepth,g=t._colorType;r.bindFramebuffer(r.FRAMEBUFFER,a);for(var v=0;v<f;++v)t.color[v]=s(r,u,c,g,r.RGBA,r.COLOR_ATTACHMENT0+v);0===f?(t._color_rb=l(r,u,c,r.RGBA4,r.COLOR_ATTACHMENT0),h&&h.drawBuffersWEBGL(y[0])):f>1&&h.drawBuffersWEBGL(y[f]);var m=r.getExtension("WEBGL_depth_texture");m?d?t.depth=s(r,u,c,m.UNSIGNED_INT_24_8_WEBGL,r.DEPTH_STENCIL,r.DEPTH_STENCIL_ATTACHMENT):p&&(t.depth=s(r,u,c,r.UNSIGNED_SHORT,r.DEPTH_COMPONENT,r.DEPTH_ATTACHMENT)):p&&d?t._depth_rb=l(r,u,c,r.DEPTH_STENCIL,r.DEPTH_STENCIL_ATTACHMENT):p?t._depth_rb=l(r,u,c,r.DEPTH_COMPONENT16,r.DEPTH_ATTACHMENT):d&&(t._depth_rb=l(r,u,c,r.STENCIL_INDEX,r.STENCIL_ATTACHMENT));var b=r.checkFramebufferStatus(r.FRAMEBUFFER);if(b!==r.FRAMEBUFFER_COMPLETE){t._destroyed=!0,r.bindFramebuffer(r.FRAMEBUFFER,null),r.deleteFramebuffer(t.handle),t.handle=null,t.depth&&(t.depth.dispose(),t.depth=null),t._depth_rb&&(r.deleteRenderbuffer(t._depth_rb),t._depth_rb=null);for(var v=0;v<t.color.length;++v)t.color[v].dispose(),t.color[v]=null;t._color_rb&&(r.deleteRenderbuffer(t._color_rb),t._color_rb=null),i(r,e),o(b)}i(r,e)}function c(t,e,r,n,i,a,o,s){this.gl=t,this._shape=[0|e,0|r],this._destroyed=!1,this._ext=s,this.color=new Array(i);for(var l=0;l<i;++l)this.color[l]=null;this._color_rb=null,this.depth=null,this._depth_rb=null,this._colorType=n,this._useDepth=a,this._useStencil=o;var c=this,f=[0|e,0|r];Object.defineProperties(f,{0:{get:function(){return c._shape[0]},set:function(t){return c.width=t}},1:{get:function(){return c._shape[1]},set:function(t){return c.height=t}}}),this._shapeVector=f,u(this)}function f(t,e,r){if(t._destroyed)throw new Error("gl-fbo: Can't resize destroyed FBO");if(t._shape[0]!==e||t._shape[1]!==r){var a=t.gl,s=a.getParameter(a.MAX_RENDERBUFFER_SIZE);if(e<0||e>s||r<0||r>s)throw new Error("gl-fbo: Can't resize FBO, invalid dimensions");t._shape[0]=e,t._shape[1]=r;for(var l=n(a),u=0;u<t.color.length;++u)t.color[u].shape=t._shape;t._color_rb&&(a.bindRenderbuffer(a.RENDERBUFFER,t._color_rb),a.renderbufferStorage(a.RENDERBUFFER,a.RGBA4,t._shape[0],t._shape[1])),t.depth&&(t.depth.shape=t._shape),t._depth_rb&&(a.bindRenderbuffer(a.RENDERBUFFER,t._depth_rb),t._useDepth&&t._useStencil?a.renderbufferStorage(a.RENDERBUFFER,a.DEPTH_STENCIL,t._shape[0],t._shape[1]):t._useDepth?a.renderbufferStorage(a.RENDERBUFFER,a.DEPTH_COMPONENT16,t._shape[0],t._shape[1]):t._useStencil&&a.renderbufferStorage(a.RENDERBUFFER,a.STENCIL_INDEX,t._shape[0],t._shape[1])),a.bindFramebuffer(a.FRAMEBUFFER,t.handle);var c=a.checkFramebufferStatus(a.FRAMEBUFFER);c!==a.FRAMEBUFFER_COMPLETE&&(t.dispose(),i(a,l),o(c)),i(a,l)}}function h(t,e,r,n){p||(p=t.FRAMEBUFFER_UNSUPPORTED,g=t.FRAMEBUFFER_INCOMPLETE_ATTACHMENT,v=t.FRAMEBUFFER_INCOMPLETE_DIMENSIONS,m=t.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT);var i=t.getExtension("WEBGL_draw_buffers");if(!y&&i&&a(t,i),Array.isArray(e)&&(n=r,r=0|e[1],e=0|e[0]),"number"!=typeof e)throw new Error("gl-fbo: Missing shape parameter");var o=t.getParameter(t.MAX_RENDERBUFFER_SIZE);if(e<0||e>o||r<0||r>o)throw new Error("gl-fbo: Parameters are too large for FBO");n=n||{};var s=1;if("color"in n){if(s=Math.max(0|n.color,0),s<0)throw new Error("gl-fbo: Must specify a nonnegative number of colors");if(s>1){if(!i)throw new Error("gl-fbo: Multiple draw buffer extension not supported");if(s>t.getParameter(i.MAX_COLOR_ATTACHMENTS_WEBGL))throw new Error("gl-fbo: Context does not support "+s+" draw buffers")}}var l=t.UNSIGNED_BYTE,u=t.getExtension("OES_texture_float");if(n.float&&s>0){if(!u)throw new Error("gl-fbo: Context does not support floating point textures");l=t.FLOAT}else n.preferFloat&&s>0&&u&&(l=t.FLOAT);var f=!0;"depth"in n&&(f=!!n.depth);var h=!1;return"stencil"in n&&(h=!!n.stencil),new c(t,e,r,l,s,f,h,i)}var d=t("gl-texture2d");e.exports=h;var p,g,v,m,y=null,b=c.prototype;Object.defineProperties(b,{shape:{get:function(){return this._destroyed?[0,0]:this._shapeVector},set:function(t){if(Array.isArray(t)||(t=[0|t,0|t]),2!==t.length)throw new Error("gl-fbo: Shape vector must be length 2");var e=0|t[0],r=0|t[1];return f(this,e,r),[e,r]},enumerable:!1},width:{get:function(){return this._destroyed?0:this._shape[0]},set:function(t){return t=0|t,f(this,t,this._shape[1]),t},enumerable:!1},height:{get:function(){return this._destroyed?0:this._shape[1]},set:function(t){return t=0|t,f(this,this._shape[0],t),t},enumerable:!1}}),b.bind=function(){if(!this._destroyed){var t=this.gl;t.bindFramebuffer(t.FRAMEBUFFER,this.handle),t.viewport(0,0,this._shape[0],this._shape[1])}},b.dispose=function(){if(!this._destroyed){this._destroyed=!0;var t=this.gl;t.deleteFramebuffer(this.handle),this.handle=null,this.depth&&(this.depth.dispose(),this.depth=null),this._depth_rb&&(t.deleteRenderbuffer(this._depth_rb),this._depth_rb=null);for(var e=0;e<this.color.length;++e)this.color[e].dispose(),this.color[e]=null;this._color_rb&&(t.deleteRenderbuffer(this._color_rb),this._color_rb=null)}}},{"gl-texture2d":104}],72:[function(t,e,r){function n(t,e,r){"use strict";var n=o(e)||"of unknown name (see npm glsl-shader-name)",l="unknown type";void 0!==r&&(l=r===a.FRAGMENT_SHADER?"fragment":"vertex");for(var u=i("Error compiling %s shader %s:\n",l,n),c=i("%s%s",u,t),f=t.split("\n"),h={},d=0;d<f.length;d++){var p=f[d];if(""!==p){var g=parseInt(p.split(":")[2]);if(isNaN(g))throw new Error(i("Could not parse error: %s",p));h[g]=p}}for(var v=s(e).split("\n"),d=0;d<v.length;d++)if(h[d+3]||h[d+2]||h[d+1]){var m=v[d];if(u+=m+"\n",h[d+1]){var y=h[d+1];y=y.substr(y.split(":",3).join(":").length+1).trim(),u+=i("^^^ %s\n\n",y)}}return{long:u.trim(),short:c.trim()}}var i=t("sprintf-js").sprintf,a=t("gl-constants/lookup"),o=t("glsl-shader-name"),s=t("add-line-numbers");e.exports=n},{"add-line-numbers":8,"gl-constants/lookup":65,"glsl-shader-name":105,"sprintf-js":153}],73:[function(t,e,r){"use strict";function n(t,e,r,n,i,a){this.plot=t,this.shader=e,this.pickShader=r,this.positionBuffer=n,this.colorBuffer=i,this.idBuffer=a,this.xData=[],this.yData=[],this.shape=[0,0],this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.pickOffset=0}function i(t,e){var r=t.gl,i=l(r,c.vertex,c.fragment),a=l(r,c.pickVertex,c.pickFragment),o=u(r),s=u(r),f=u(r),h=new n(t,i,a,o,s,f);return h.update(e),t.addObject(h),h}e.exports=i;var a=t("binary-search-bounds"),o=t("iota-array"),s=t("typedarray-pool"),l=t("gl-shader"),u=t("gl-buffer"),c=t("./lib/shaders"),f=n.prototype,h=[0,0,1,0,0,1,1,0,1,1,0,1];f.draw=function(){var t=[1,0,0,0,1,0,0,0,1];return function(){var e=this.plot,r=this.shader,n=this.bounds,i=(this.numVertices,e.gl),a=(e.viewBox,e.dataBox),o=n[2]-n[0],s=n[3]-n[1],l=a[2]-a[0],u=a[3]-a[1];t[0]=2*o/l,t[4]=2*s/u,t[6]=2*(n[0]-a[0])/l-1,t[7]=2*(n[1]-a[1])/u-1,r.bind();var c=r.uniforms;c.viewTransform=t;var f=r.attributes;this.positionBuffer.bind(),f.position.pointer(),this.colorBuffer.bind(),f.color.pointer(i.UNSIGNED_BYTE,!0),i.drawArrays(i.TRIANGLES,0,this.numVertices)}}(),f.drawPick=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0,0,0];return function(r){var n=this.plot,i=this.pickShader,a=this.bounds,o=(this.numVertices,n.gl),s=(n.viewBox,n.dataBox),l=a[2]-a[0],u=a[3]-a[1],c=s[2]-s[0],f=s[3]-s[1];t[0]=2*l/c,t[4]=2*u/f,t[6]=2*(a[0]-s[0])/c-1,t[7]=2*(a[1]-s[1])/f-1;for(var h=0;h<4;++h)e[h]=r>>8*h&255;this.pickOffset=r,i.bind();var d=i.uniforms;d.viewTransform=t,d.pickOffset=e;var p=i.attributes;return this.positionBuffer.bind(),p.position.pointer(),this.idBuffer.bind(),p.pickId.pointer(o.UNSIGNED_BYTE,!1),o.drawArrays(o.TRIANGLES,0,this.numVertices),r+this.shape[0]*this.shape[1]}}(),f.pick=function(t,e,r){var n=this.pickOffset,i=this.shape[0]*this.shape[1];if(r<n||r>=n+i)return null;var a=r-n,o=this.xData,s=this.yData;return{object:this,pointId:a,dataCoord:[o[a%this.shape[0]],s[a/this.shape[0]|0]]}},f.update=function(t){t=t||{};var e=t.shape||[0,0],r=t.x||o(e[0]),n=t.y||o(e[1]),i=t.z||new Float32Array(e[0]*e[1]);this.xData=r,this.yData=n;var l=t.colorLevels||[0],u=t.colorValues||[0,0,0,1],c=l.length,f=this.bounds,d=f[0]=r[0],p=f[1]=n[0],g=f[2]=r[r.length-1],v=f[3]=n[n.length-1],m=1/(g-d),y=1/(v-p),b=e[0]*e[1]*(h.length>>>1);this.numVertices=b;var x=s.mallocUint8(4*b),_=s.mallocFloat32(2*b),w=s.mallocUint32(b),A=e[0],k=e[1];this.shape=[A,k];for(var M=0,E=0;E<k-1;++E)for(var T=y*(n[E]-p),L=y*(n[E+1]-p),S=0;S<A-1;++S)for(var C=m*(r[S]-d),R=m*(r[S+1]-d),I=0;I<h.length;I+=2){var P,O,N,z,D=h[I],F=h[I+1],B=(E+F)*A+(S+D),j=i[B],U=a.le(l,j);if(U<0)P=u[0],O=u[1],N=u[2],z=u[3];else if(U===c-1)P=u[4*c-4],O=u[4*c-3],N=u[4*c-2],z=u[4*c-1];else{var V=(j-l[U])/(l[U+1]-l[U]),q=1-V,H=4*U,G=4*(U+1);P=q*u[H]+V*u[G],O=q*u[H+1]+V*u[G+1],N=q*u[H+2]+V*u[G+2],z=q*u[H+3]+V*u[G+3]}x[4*M]=255*P,x[4*M+1]=255*O,x[4*M+2]=255*N,x[4*M+3]=255*z,_[2*M]=(1-D)*C+D*R,_[2*M+1]=(1-F)*T+F*L,w[M]=E*A+S,M+=1}this.positionBuffer.update(_),this.colorBuffer.update(x),this.idBuffer.update(w),s.free(_),s.free(x),s.free(w)},f.dispose=function(){this.shader.dispose(),this.pickShader.dispose(),this.positionBuffer.dispose(),this.colorBuffer.dispose(),this.idBuffer.dispose(),this.plot.removeObject(this)}},{"./lib/shaders":74,"binary-search-bounds":75,"gl-buffer":63,"gl-shader":96,"iota-array":116,"typedarray-pool":162}],74:[function(t,e,r){"use strict";e.exports={fragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  fragColor = color;\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n",pickFragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragId;\nvoid main() {\n  gl_FragColor = fragId;\n}\n",pickVertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 viewTransform;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id / 255.0;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n"}},{}],75:[function(t,e,r){arguments[4][45][0].apply(r,arguments)},{dup:45}],76:[function(t,e,r){r.lineVertex="precision mediump float;\n#define GLSLIFY 1\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\nvoid main() {\n  vec2 dir = (matrix * vec3(d, 0)).xy;\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = 0.5 * width *\n    normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n}\n",r.lineFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}\n",r.mitreVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 p;\n\nuniform mat3  matrix;\nuniform vec2 screenShape;\nuniform float radius;\n\nvoid main() {\n  vec3 pp = matrix * vec3(p, 1);\n  gl_Position  = vec4(pp.xy, 0, pp.z);\n  gl_PointSize = radius;\n}\n",r.mitreFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}\n",r.pickVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\nattribute vec4 pick0, pick1;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = width *\n    normalize(screenShape.yx * vec2(d.y, -d.x)) / screenShape.xy;\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}\n",r.pickFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}\n",r.fillVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 projectAxis;\nuniform float projectValue;\nuniform float depth;\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 p = base.xy / base.z;\n  if(d.y < 0.0 || (d.y == 0.0 && d.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}\n",r.fillFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"},{}],77:[function(t,e,r){"use strict";function n(t,e,r,n,i,a,o,s){this.plot=t,this.dashPattern=e,this.lineBuffer=r,this.pickBuffer=n,this.lineShader=i,this.mitreShader=a,this.fillShader=o,this.pickShader=s,this.usingDashes=!1,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.width=1,this.color=[0,0,1,1],this.fill=[!1,!1,!1,!1],this.fillColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.data=null,this.numPoints=0,this.vertCount=0,this.pickOffset=0,this.lodBuffer=[]}function i(t){return t.map(function(t){return t.slice()})}function a(t,e){var r=t.gl,i=s(r),a=s(r),u=l(r,[1,1]),c=o(r,f.lineVertex,f.lineFragment),h=o(r,f.mitreVertex,f.mitreFragment),d=o(r,f.fillVertex,f.fillFragment),p=o(r,f.pickVertex,f.pickFragment),g=new n(t,u,i,a,c,h,d,p);return t.addObject(g),g.update(e),g}e.exports=a;var o=t("gl-shader"),s=t("gl-buffer"),l=t("gl-texture2d"),u=t("ndarray"),c=t("typedarray-pool"),f=t("./lib/shaders"),h=n.prototype;h.draw=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0],r=[1,0],n=[-1,0],i=[0,1],a=[0,-1];return function(){var o=this.plot,s=this.color,l=this.width,u=(this.numPoints,this.bounds),c=this.vertCount;if(c){var f=o.gl,h=o.viewBox,d=o.dataBox,p=o.pixelRatio,g=u[2]-u[0],v=u[3]-u[1],m=d[2]-d[0],y=d[3]-d[1],b=h[2]-h[0],x=h[3]-h[1];t[0]=2*g/m,t[4]=2*v/y,t[6]=2*(u[0]-d[0])/m-1,t[7]=2*(u[1]-d[1])/y-1,e[0]=b,e[1]=x;var _=this.lineBuffer;_.bind();var w=this.fill;if(w[0]||w[1]||w[2]||w[3]){var A=this.fillShader;A.bind();var k=A.uniforms;k.matrix=t,k.depth=o.nextDepthValue();var M=A.attributes;M.a.pointer(f.FLOAT,!1,16,0),M.d.pointer(f.FLOAT,!1,16,8),f.depthMask(!0),f.enable(f.DEPTH_TEST);var E=this.fillColor;w[0]&&(k.color=E[0],k.projectAxis=n,k.projectValue=1,f.drawArrays(f.TRIANGLES,0,c)),w[1]&&(k.color=E[1],k.projectAxis=a,k.projectValue=1,f.drawArrays(f.TRIANGLES,0,c)),w[2]&&(k.color=E[2],k.projectAxis=r,k.projectValue=1,f.drawArrays(f.TRIANGLES,0,c)),w[3]&&(k.color=E[3],k.projectAxis=i,k.projectValue=1,f.drawArrays(f.TRIANGLES,0,c)),f.depthMask(!1),f.disable(f.DEPTH_TEST)}var T=this.lineShader;T.bind();var L=T.uniforms;L.matrix=t,L.color=s,L.width=l*p,L.screenShape=e,L.dashPattern=this.dashPattern.bind(),L.dashLength=this.dashLength*p;var S=T.attributes;if(S.a.pointer(f.FLOAT,!1,16,0),S.d.pointer(f.FLOAT,!1,16,8),f.drawArrays(f.TRIANGLES,0,c),l>2&&!this.usingDashes){
++var C=this.mitreShader;C.bind();var R=C.uniforms;R.matrix=t,R.color=s,R.screenShape=e,R.radius=l*p,C.attributes.p.pointer(f.FLOAT,!1,48,0),f.drawArrays(f.POINTS,0,c/3|0)}}}}(),h.drawPick=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0],r=[0,0,0,0];return function(n){var i=this.plot,a=this.pickShader,o=this.lineBuffer,s=this.pickBuffer,l=this.width,u=this.numPoints,c=this.bounds,f=this.vertCount,h=i.gl,d=i.viewBox,p=i.dataBox,g=i.pickPixelRatio,v=c[2]-c[0],m=c[3]-c[1],y=p[2]-p[0],b=p[3]-p[1],x=d[2]-d[0],_=d[3]-d[1];if(this.pickOffset=n,!f)return n+u;t[0]=2*v/y,t[4]=2*m/b,t[6]=2*(c[0]-p[0])/y-1,t[7]=2*(c[1]-p[1])/b-1,e[0]=x,e[1]=_,r[0]=255&n,r[1]=n>>>8&255,r[2]=n>>>16&255,r[3]=n>>>24,a.bind();var w=a.uniforms;w.matrix=t,w.width=l*g,w.pickOffset=r,w.screenShape=e;var A=a.attributes;return o.bind(),A.a.pointer(h.FLOAT,!1,16,0),A.d.pointer(h.FLOAT,!1,16,8),s.bind(),A.pick0.pointer(h.UNSIGNED_BYTE,!1,8,0),A.pick1.pointer(h.UNSIGNED_BYTE,!1,8,4),h.drawArrays(h.TRIANGLES,0,f),n+u}}(),h.pick=function(t,e,r){var n=this.pickOffset,i=this.numPoints;if(r<n||r>=n+i)return null;var a=r-n,o=this.data;return{object:this,pointId:a,dataCoord:[o[2*a],o[2*a+1]]}},h.update=function(t){t=t||{};var e=this.plot.gl;!!t.connectGaps;this.color=(t.color||[0,0,1,1]).slice(),this.width=+(t.width||1),this.fill=(t.fill||[!1,!1,!1,!1]).slice(),this.fillColor=i(t.fillColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]);for(var r=t.dashes||[1],n=0,a=0;a<r.length;++a)n+=r[a];for(var o=c.mallocUint8(n),s=0,f=255,a=0;a<r.length;++a){for(var h=0;h<r[a];++h)o[s++]=f;f^=255}this.dashPattern.dispose(),this.usingDashes=r.length>1,this.dashPattern=l(e,u(o,[n,1,4],[1,0,0])),this.dashPattern.minFilter=e.NEAREST,this.dashPattern.magFilter=e.NEAREST,this.dashLength=n,c.free(o);var d=t.positions;this.data=d;var p=this.bounds;p[0]=p[1]=1/0,p[2]=p[3]=-(1/0);var g=this.numPoints=d.length>>>1;if(0!==g){for(var a=0;a<g;++a){var v=d[2*a],m=d[2*a+1];isNaN(v)||isNaN(m)||(p[0]=Math.min(p[0],v),p[1]=Math.min(p[1],m),p[2]=Math.max(p[2],v),p[3]=Math.max(p[3],m))}p[0]===p[2]&&(p[2]+=1),p[3]===p[1]&&(p[3]+=1);for(var y=c.mallocFloat32(24*(g-1)),b=c.mallocUint32(12*(g-1)),x=y.length,_=b.length,s=g,w=0;s>1;){var A=--s,v=d[2*s],m=d[2*s+1],k=A-1,M=d[2*k],E=d[2*k+1];if(!(isNaN(v)||isNaN(m)||isNaN(M)||isNaN(E))){w+=1,v=(v-p[0])/(p[2]-p[0]),m=(m-p[1])/(p[3]-p[1]),M=(M-p[0])/(p[2]-p[0]),E=(E-p[1])/(p[3]-p[1]);var T=M-v,L=E-m,S=A|1<<24,C=A-1,R=A,I=A-1|1<<24;y[--x]=-L,y[--x]=-T,y[--x]=m,y[--x]=v,b[--_]=S,b[--_]=C,y[--x]=L,y[--x]=T,y[--x]=E,y[--x]=M,b[--_]=R,b[--_]=I,y[--x]=-L,y[--x]=-T,y[--x]=E,y[--x]=M,b[--_]=R,b[--_]=I,y[--x]=L,y[--x]=T,y[--x]=E,y[--x]=M,b[--_]=R,b[--_]=I,y[--x]=-L,y[--x]=-T,y[--x]=m,y[--x]=v,b[--_]=S,b[--_]=C,y[--x]=L,y[--x]=T,y[--x]=m,y[--x]=v,b[--_]=S,b[--_]=C}}this.vertCount=6*w,this.lineBuffer.update(y.subarray(x)),this.pickBuffer.update(b.subarray(_)),c.free(y),c.free(b)}},h.dispose=function(){this.plot.removeObject(this),this.lineBuffer.dispose(),this.pickBuffer.dispose(),this.lineShader.dispose(),this.mitreShader.dispose(),this.fillShader.dispose(),this.pickShader.dispose(),this.dashPattern.dispose()}},{"./lib/shaders":76,"gl-buffer":63,"gl-shader":96,"gl-texture2d":104,ndarray:123,"typedarray-pool":162}],78:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],a=e[3],o=r+r,s=n+n,l=i+i,u=r*o,c=n*o,f=n*s,h=i*o,d=i*s,p=i*l,g=a*o,v=a*s,m=a*l;return t[0]=1-f-p,t[1]=c+m,t[2]=h-v,t[3]=0,t[4]=c-m,t[5]=1-u-p,t[6]=d+g,t[7]=0,t[8]=h+v,t[9]=d-g,t[10]=1-u-f,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],79:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.vbo=e,this.shader=r}function i(t){var e=t.gl,r=a(e,[0,0,0,1,1,0,1,1]),i=o(e,s.boxVert,s.lineFrag);return new n(t,r,i)}e.exports=i;var a=t("gl-buffer"),o=t("gl-shader"),s=t("./shaders"),l=n.prototype;l.bind=function(){var t=this.shader;this.vbo.bind(),this.shader.bind(),t.attributes.coord.pointer(),t.uniforms.screenBox=this.plot.screenBox},l.drawBox=function(){var t=[0,0],e=[0,0];return function(r,n,i,a,o){var s=this.plot,l=this.shader,u=s.gl;t[0]=r,t[1]=n,e[0]=i,e[1]=a,l.uniforms.lo=t,l.uniforms.hi=e,l.uniforms.color=o,u.drawArrays(u.TRIANGLE_STRIP,0,4)}}(),l.dispose=function(){this.vbo.dispose(),this.shader.dispose()}},{"./shaders":82,"gl-buffer":63,"gl-shader":96}],80:[function(t,e,r){"use strict";function n(t,e,r,n){this.plot=t,this.vbo=e,this.shader=r,this.tickShader=n,this.ticks=[[],[]]}function i(t,e){return t-e}function a(t){var e=t.gl,r=o(e),i=s(e,u.gridVert,u.gridFrag),a=s(e,u.tickVert,u.gridFrag),l=new n(t,r,i,a);return l}e.exports=a;var o=t("gl-buffer"),s=t("gl-shader"),l=t("binary-search-bounds"),u=t("./shaders"),c=n.prototype;c.draw=function(){var t=[0,0],e=[0,0],r=[0,0];return function(){for(var n=this.plot,i=this.vbo,a=this.shader,o=this.ticks,s=n.gl,l=n._tickBounds,u=n.dataBox,c=n.viewBox,f=n.gridLineWidth,h=n.gridLineColor,d=n.gridLineEnable,p=n.pixelRatio,g=0;g<2;++g){var v=l[g],m=l[g+2],y=m-v,b=.5*(u[g+2]+u[g]),x=u[g+2]-u[g];e[g]=2*y/x,t[g]=2*(v-b)/x}a.bind(),i.bind(),a.attributes.dataCoord.pointer(),a.uniforms.dataShift=t,a.uniforms.dataScale=e;for(var _=0,g=0;g<2;++g){r[0]=r[1]=0,r[g]=1,a.uniforms.dataAxis=r,a.uniforms.lineWidth=f[g]/(c[g+2]-c[g])*p,a.uniforms.color=h[g];var w=6*o[g].length;d[g]&&w&&s.drawArrays(s.TRIANGLES,_,w),_+=w}}}(),c.drawTickMarks=function(){var t=[0,0],e=[0,0],r=[1,0],n=[0,1],a=[0,0],o=[0,0];return function(){for(var s=this.plot,u=this.vbo,c=this.tickShader,f=this.ticks,h=s.gl,d=s._tickBounds,p=s.dataBox,g=s.viewBox,v=s.pixelRatio,m=s.screenBox,y=m[2]-m[0],b=m[3]-m[1],x=g[2]-g[0],_=g[3]-g[1],w=0;w<2;++w){var A=d[w],k=d[w+2],M=k-A,E=.5*(p[w+2]+p[w]),T=p[w+2]-p[w];e[w]=2*M/T,t[w]=2*(A-E)/T}e[0]*=x/y,t[0]*=x/y,e[1]*=_/b,t[1]*=_/b,c.bind(),u.bind(),c.attributes.dataCoord.pointer();var L=c.uniforms;L.dataShift=t,L.dataScale=e;var S=s.tickMarkLength,C=s.tickMarkWidth,R=s.tickMarkColor,I=0,P=6*f[0].length,O=Math.min(l.ge(f[0],(p[0]-d[0])/(d[2]-d[0]),i),f[0].length),N=Math.min(l.gt(f[0],(p[2]-d[0])/(d[2]-d[0]),i),f[0].length),z=I+6*O,D=6*Math.max(0,N-O),F=Math.min(l.ge(f[1],(p[1]-d[1])/(d[3]-d[1]),i),f[1].length),B=Math.min(l.gt(f[1],(p[3]-d[1])/(d[3]-d[1]),i),f[1].length),j=P+6*F,U=6*Math.max(0,B-F);a[0]=2*(g[0]-S[1])/y-1,a[1]=(g[3]+g[1])/b-1,o[0]=S[1]*v/y,o[1]=C[1]*v/b,U&&(L.color=R[1],L.tickScale=o,L.dataAxis=n,L.screenOffset=a,h.drawArrays(h.TRIANGLES,j,U)),a[0]=(g[2]+g[0])/y-1,a[1]=2*(g[1]-S[0])/b-1,o[0]=C[0]*v/y,o[1]=S[0]*v/b,D&&(L.color=R[0],L.tickScale=o,L.dataAxis=r,L.screenOffset=a,h.drawArrays(h.TRIANGLES,z,D)),a[0]=2*(g[2]+S[3])/y-1,a[1]=(g[3]+g[1])/b-1,o[0]=S[3]*v/y,o[1]=C[3]*v/b,U&&(L.color=R[3],L.tickScale=o,L.dataAxis=n,L.screenOffset=a,h.drawArrays(h.TRIANGLES,j,U)),a[0]=(g[2]+g[0])/y-1,a[1]=2*(g[3]+S[2])/b-1,o[0]=C[2]*v/y,o[1]=S[2]*v/b,D&&(L.color=R[2],L.tickScale=o,L.dataAxis=r,L.screenOffset=a,h.drawArrays(h.TRIANGLES,z,D))}}(),c.update=function(){var t=[1,1,-1,-1,1,-1],e=[1,-1,1,1,-1,-1];return function(r){for(var n=r.ticks,i=r.bounds,a=new Float32Array(18*(n[0].length+n[1].length)),o=(this.plot.zeroLineEnable,0),s=[[],[]],l=0;l<2;++l)for(var u=s[l],c=n[l],f=i[l],h=i[l+2],d=0;d<c.length;++d){var p=(c[d].x-f)/(h-f);u.push(p);for(var g=0;g<6;++g)a[o++]=p,a[o++]=t[g],a[o++]=e[g]}this.ticks=s,this.vbo.update(a)}}(),c.dispose=function(){this.vbo.dispose(),this.shader.dispose(),this.tickShader.dispose()}},{"./shaders":82,"binary-search-bounds":84,"gl-buffer":63,"gl-shader":96}],81:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.vbo=e,this.shader=r}function i(t){var e=t.gl,r=a(e,[-1,-1,-1,1,1,-1,1,1]),i=o(e,s.lineVert,s.lineFrag),l=new n(t,r,i);return l}e.exports=i;var a=t("gl-buffer"),o=t("gl-shader"),s=t("./shaders"),l=n.prototype;l.bind=function(){var t=this.shader;this.vbo.bind(),this.shader.bind(),t.attributes.coord.pointer(),t.uniforms.screenBox=this.plot.screenBox},l.drawLine=function(){var t=[0,0],e=[0,0];return function(r,n,i,a,o,s){var l=this.plot,u=this.shader,c=l.gl;t[0]=r,t[1]=n,e[0]=i,e[1]=a,u.uniforms.start=t,u.uniforms.end=e,u.uniforms.width=o*l.pixelRatio,u.uniforms.color=s,c.drawArrays(c.TRIANGLE_STRIP,0,4)}}(),l.dispose=function(){this.vbo.dispose(),this.shader.dispose()}},{"./shaders":82,"gl-buffer":63,"gl-shader":96}],82:[function(t,e,r){"use strict";var n="precision lowp float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = vec4(color.xyz * color.w, color.w);\n}\n";e.exports={lineVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 start, end;\nuniform float width;\n\nvec2 perp(vec2 v) {\n  return vec2(v.y, -v.x);\n}\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  vec2 delta = normalize(perp(start - end));\n  vec2 offset = mix(start, end, 0.5 * (coord.y+1.0));\n  gl_Position = vec4(screen(offset + 0.5 * width * delta * coord.x), 0, 1);\n}\n",lineFrag:n,textVert:"#define GLSLIFY 1\nattribute vec3 textCoordinate;\n\nuniform vec2 dataScale, dataShift, dataAxis, screenOffset, textScale;\nuniform float angle;\n\nvoid main() {\n  float dataOffset  = textCoordinate.z;\n  vec2 glyphOffset  = textCoordinate.xy;\n  mat2 glyphMatrix = mat2(cos(angle), sin(angle), -sin(angle), cos(angle));\n  vec2 screenCoordinate = dataAxis * (dataScale * dataOffset + dataShift) +\n    glyphMatrix * glyphOffset * textScale + screenOffset;\n  gl_Position = vec4(screenCoordinate, 0, 1);\n}\n",textFrag:n,gridVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale;\nuniform float lineWidth;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  pos += 10.0 * dataCoord.y * vec2(dataAxis.y, -dataAxis.x) + dataCoord.z * lineWidth;\n  gl_Position = vec4(pos, 0, 1);\n}\n",gridFrag:n,boxVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 lo, hi;\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  gl_Position = vec4(screen(mix(lo, hi, coord)), 0, 1);\n}\n",tickVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale, screenOffset, tickScale;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  gl_Position = vec4(pos + tickScale*dataCoord.yz + screenOffset, 0, 1);\n}\n"}},{}],83:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.vbo=e,this.shader=r,this.tickOffset=[[],[]],this.tickX=[[],[]],this.labelOffset=[0,0],this.labelCount=[0,0]}function i(t){var e=t.gl,r=a(e),i=o(e,u.textVert,u.textFrag),s=new n(t,r,i);return s}e.exports=i;var a=t("gl-buffer"),o=t("gl-shader"),s=t("text-cache"),l=t("binary-search-bounds"),u=t("./shaders"),c=n.prototype;c.drawTicks=function(){var t=[0,0],e=[0,0],r=[0,0];return function(n){var i=this.plot,a=this.shader,o=this.tickX[n],s=this.tickOffset[n],u=i.gl,c=i.viewBox,f=i.dataBox,h=i.screenBox,d=i.pixelRatio,p=i.tickEnable,g=i.tickPad,v=i.tickColor,m=i.tickAngle,y=(i.tickMarkLength,i.labelEnable),b=i.labelPad,x=i.labelColor,_=i.labelAngle,w=this.labelOffset[n],A=this.labelCount[n],k=l.lt(o,f[n]),M=l.le(o,f[n+2]);t[0]=t[1]=0,t[n]=1,e[n]=(c[2+n]+c[n])/(h[2+n]-h[n])-1;var E=2/h[2+(1^n)]-h[1^n];e[1^n]=E*c[1^n]-1,p[n]&&(e[1^n]-=E*d*g[n],k<M&&s[M]>s[k]&&(a.uniforms.dataAxis=t,a.uniforms.screenOffset=e,a.uniforms.color=v[n],a.uniforms.angle=m[n],u.drawArrays(u.TRIANGLES,s[k],s[M]-s[k]))),y[n]&&A&&(e[1^n]-=E*d*b[n],a.uniforms.dataAxis=r,a.uniforms.screenOffset=e,a.uniforms.color=x[n],a.uniforms.angle=_[n],u.drawArrays(u.TRIANGLES,w,A)),e[1^n]=E*c[2+(1^n)]-1,p[n+2]&&(e[1^n]+=E*d*g[n+2],k<M&&s[M]>s[k]&&(a.uniforms.dataAxis=t,a.uniforms.screenOffset=e,a.uniforms.color=v[n+2],a.uniforms.angle=m[n+2],u.drawArrays(u.TRIANGLES,s[k],s[M]-s[k]))),y[n+2]&&A&&(e[1^n]+=E*d*b[n+2],a.uniforms.dataAxis=r,a.uniforms.screenOffset=e,a.uniforms.color=x[n+2],a.uniforms.angle=_[n+2],u.drawArrays(u.TRIANGLES,w,A))}}(),c.drawTitle=function(){var t=[0,0],e=[0,0];return function(){var r=this.plot,n=this.shader,i=r.gl,a=r.screenBox,o=r.titleCenter,s=r.titleAngle,l=r.titleColor,o=r.titleCenter,u=r.pixelRatio;if(this.titleCount){for(var c=0;c<2;++c)e[c]=2*(o[c]*u-a[c])/(a[2+c]-a[c])-1;n.bind(),n.uniforms.dataAxis=t,n.uniforms.screenOffset=e,n.uniforms.angle=s,n.uniforms.color=l,i.drawArrays(i.TRIANGLES,this.titleOffset,this.titleCount)}}}(),c.bind=function(){var t=[0,0],e=[0,0],r=[0,0];return function(){var n=this.plot,i=this.shader,a=n._tickBounds,o=n.dataBox,s=n.screenBox,l=n.viewBox;i.bind();for(var u=0;u<2;++u){var c=a[u],f=a[u+2],h=f-c,d=.5*(o[u+2]+o[u]),p=o[u+2]-o[u],g=l[u],v=l[u+2],m=v-g,y=s[u],b=s[u+2],x=b-y;e[u]=2*h/p*m/x,t[u]=2*(c-d)/p*m/x}r[1]=2*n.pixelRatio/(s[3]-s[1]),r[0]=r[1]*(s[3]-s[1])/(s[2]-s[0]),i.uniforms.dataScale=e,i.uniforms.dataShift=t,i.uniforms.textScale=r,this.vbo.bind(),i.attributes.textCoordinate.pointer()}}(),c.update=function(t){for(var e=[],r=t.ticks,n=t.bounds,i=0;i<2;++i){for(var a=[Math.floor(e.length/3)],o=[-(1/0)],l=r[i],u=0;u<l.length;++u){for(var c=l[u],f=c.x,h=c.text,d=c.font||"sans-serif",p=c.fontSize||12,g=s(d,h).data,v=1/(n[i+2]-n[i]),m=n[i],y=0;y<g.length;y+=2)e.push(g[y]*p,-g[y+1]*p,(f-m)*v);a.push(Math.floor(e.length/3)),o.push(f)}this.tickOffset[i]=a,this.tickX[i]=o}for(var i=0;i<2;++i){this.labelOffset[i]=Math.floor(e.length/3);for(var g=s(t.labelFont[i],t.labels[i]).data,p=t.labelSize[i],u=0;u<g.length;u+=2)e.push(g[u]*p,-g[u+1]*p,0);this.labelCount[i]=Math.floor(e.length/3)-this.labelOffset[i]}this.titleOffset=Math.floor(e.length/3);for(var g=s(t.titleFont,t.title).data,p=t.titleSize,u=0;u<g.length;u+=2)e.push(g[u]*p,-g[u+1]*p,0);this.titleCount=Math.floor(e.length/3)-this.titleOffset,this.vbo.update(e)},c.dispose=function(){this.vbo.dispose(),this.shader.dispose()}},{"./shaders":82,"binary-search-bounds":84,"gl-buffer":63,"gl-shader":96,"text-cache":156}],84:[function(t,e,r){arguments[4][45][0].apply(r,arguments)},{dup:45}],85:[function(t,e,r){"use strict";function n(t,e){this.gl=t,this.pickBuffer=e,this.screenBox=[0,0,t.drawingBufferWidth,t.drawingBufferHeight],this.viewBox=[0,0,0,0],this.dataBox=[-10,-10,10,10],this.gridLineEnable=[!0,!0],this.gridLineWidth=[1,1],this.gridLineColor=[[0,0,0,1],[0,0,0,1]],this.pixelRatio=1,this.tickMarkLength=[0,0,0,0],this.tickMarkWidth=[0,0,0,0],this.tickMarkColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.tickPad=[15,15,15,15],this.tickAngle=[0,0,0,0],this.tickEnable=[!0,!0,!0,!0],this.tickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.labelPad=[15,15,15,15],this.labelAngle=[0,Math.PI/2,0,3*Math.PI/2],this.labelEnable=[!0,!0,!0,!0],this.labelColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.titleCenter=[0,0],this.titleEnable=!0,this.titleAngle=0,this.titleColor=[0,0,0,1],this.borderColor=[0,0,0,0],this.backgroundColor=[0,0,0,0],this.zeroLineEnable=[!0,!0],this.zeroLineWidth=[4,4],this.zeroLineColor=[[0,0,0,1],[0,0,0,1]],this.borderLineEnable=[!0,!0,!0,!0],this.borderLineWidth=[2,2,2,2],this.borderLineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.grid=null,this.text=null,this.line=null,this.box=null,this.objects=[],this.overlays=[],this._tickBounds=[1/0,1/0,-(1/0),-(1/0)],this.dirty=!1,this.pickDirty=!1,this.pickDelay=120,this.pickRadius=10,this._pickTimeout=null,this._drawPick=this.drawPick.bind(this),this._depthCounter=0}function i(t){for(var e=t.slice(),r=0;r<e.length;++r)e[r]=e[r].slice();return e}function a(t,e){return t.x-e.x}function o(t){var e=t.gl,r=s(e,[e.drawingBufferWidth,e.drawingBufferHeight]),i=new n(e,r);return i.grid=l(i),i.text=u(i),i.line=c(i),i.box=f(i),i.update(t),i}e.exports=o;var s=t("gl-select-static"),l=t("./lib/grid"),u=t("./lib/text"),c=t("./lib/line"),f=t("./lib/box"),h=n.prototype;h.setDirty=function(){this.dirty=this.pickDirty=!0},h.setOverlayDirty=function(){this.dirty=!0},h.nextDepthValue=function(){return this._depthCounter++/65536},h.draw=function(){return function(){var t=this.gl,e=this.screenBox,r=this.viewBox,n=this.dataBox,i=this.pixelRatio,a=this.grid,o=this.line,s=this.text,l=this.objects;if(this._depthCounter=0,this.pickDirty&&(this._pickTimeout&&clearTimeout(this._pickTimeout),this.pickDirty=!1,this._pickTimeout=setTimeout(this._drawPick,this.pickDelay)),this.dirty){this.dirty=!1,t.bindFramebuffer(t.FRAMEBUFFER,null),t.enable(t.SCISSOR_TEST),t.disable(t.DEPTH_TEST),t.depthFunc(t.LESS),t.depthMask(!1),t.enable(t.BLEND),t.blendEquation(t.FUNC_ADD,t.FUNC_ADD),t.blendFunc(t.ONE,t.ONE_MINUS_SRC_ALPHA),t.scissor(e[0],e[1],e[2]-e[0],e[3]-e[1]);var u=this.borderColor;t.clearColor(u[0]*u[3],u[1]*u[3],u[2]*u[3],u[3]),t.clear(t.COLOR_BUFFER_BIT|t.DEPTH_BUFFER_BIT),t.scissor(r[0],r[1],r[2]-r[0],r[3]-r[1]),t.viewport(r[0],r[1],r[2]-r[0],r[3]-r[1]);var c=this.backgroundColor;t.clearColor(c[0]*c[3],c[1]*c[3],c[2]*c[3],c[3]),t.clear(t.COLOR_BUFFER_BIT),a.draw();var f=this.zeroLineEnable,h=this.zeroLineColor,d=this.zeroLineWidth;if(f[0]||f[1]){o.bind();for(var p=0;p<2;++p)if(f[p]&&n[p]<=0&&n[p+2]>=0){var g=e[p]-n[p]*(e[p+2]-e[p])/(n[p+2]-n[p]);0===p?o.drawLine(g,e[1],g,e[3],d[p],h[p]):o.drawLine(e[0],g,e[2],g,d[p],h[p])}}for(var p=0;p<l.length;++p)l[p].draw();t.viewport(e[0],e[1],e[2]-e[0],e[3]-e[1]),t.scissor(e[0],e[1],e[2]-e[0],e[3]-e[1]),this.grid.drawTickMarks(),o.bind();var v=this.borderLineEnable,m=this.borderLineWidth,y=this.borderLineColor;v[1]&&o.drawLine(r[0],r[1]-.5*m[1]*i,r[0],r[3]+.5*m[3]*i,m[1],y[1]),v[0]&&o.drawLine(r[0]-.5*m[0]*i,r[1],r[2]+.5*m[2]*i,r[1],m[0],y[0]),v[3]&&o.drawLine(r[2],r[1]-.5*m[1]*i,r[2],r[3]+.5*m[3]*i,m[3],y[3]),v[2]&&o.drawLine(r[0]-.5*m[0]*i,r[3],r[2]+.5*m[2]*i,r[3],m[2],y[2]),s.bind();for(var p=0;p<2;++p)s.drawTicks(p);this.titleEnable&&s.drawTitle();for(var b=this.overlays,p=0;p<b.length;++p)b[p].draw();t.disable(t.SCISSOR_TEST),t.disable(t.BLEND),t.depthMask(!0)}}}(),h.drawPick=function(){return function(){var t=this.pickBuffer;this.gl;this._pickTimeout=null,t.begin();for(var e=1,r=this.objects,n=0;n<r.length;++n)e=r[n].drawPick(e);t.end()}}(),h.pick=function(){return function(t,e){var r=this.pixelRatio,n=this.pickPixelRatio,i=this.viewBox,a=0|Math.round((t-i[0]/r)*n),o=0|Math.round((e-i[1]/r)*n),s=this.pickBuffer.query(a,o,this.pickRadius);if(!s)return null;for(var l=s.id+(s.value[0]<<8)+(s.value[1]<<16)+(s.value[2]<<24),u=this.objects,c=0;c<u.length;++c){var f=u[c].pick(a,o,l);if(f)return f}return null}}(),h.setScreenBox=function(t){var e=this.screenBox,r=this.pixelRatio;e[0]=0|Math.round(t[0]*r),e[1]=0|Math.round(t[1]*r),e[2]=0|Math.round(t[2]*r),e[3]=0|Math.round(t[3]*r),this.setDirty()},h.setDataBox=function(t){var e=this.dataBox,r=e[0]!==t[0]||e[1]!==t[1]||e[2]!==t[2]||e[3]!==t[3];r&&(e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],this.setDirty())},h.setViewBox=function(t){var e=this.pixelRatio,r=this.viewBox;r[0]=0|Math.round(t[0]*e),r[1]=0|Math.round(t[1]*e),r[2]=0|Math.round(t[2]*e),r[3]=0|Math.round(t[3]*e);var n=this.pickPixelRatio;this.pickBuffer.shape=[0|Math.round((t[2]-t[0])*n),0|Math.round((t[3]-t[1])*n)],this.setDirty()},h.update=function(t){t=t||{};var e=this.gl;this.pixelRatio=t.pixelRatio||1;var r=this.pixelRatio;this.pickPixelRatio=Math.max(r,1),this.setScreenBox(t.screenBox||[0,0,e.drawingBufferWidth/r,e.drawingBufferHeight/r]);this.screenBox;this.setViewBox(t.viewBox||[.125*(this.screenBox[2]-this.screenBox[0])/r,.125*(this.screenBox[3]-this.screenBox[1])/r,.875*(this.screenBox[2]-this.screenBox[0])/r,.875*(this.screenBox[3]-this.screenBox[1])/r]);var n=this.viewBox,o=(n[2]-n[0])/(n[3]-n[1]);this.setDataBox(t.dataBox||[-10,-10/o,10,10/o]),this.borderColor=(t.borderColor||[0,0,0,0]).slice(),this.backgroundColor=(t.backgroundColor||[0,0,0,0]).slice(),this.gridLineEnable=(t.gridLineEnable||[!0,!0]).slice(),this.gridLineWidth=(t.gridLineWidth||[1,1]).slice(),this.gridLineColor=i(t.gridLineColor||[[.5,.5,.5,1],[.5,.5,.5,1]]),this.zeroLineEnable=(t.zeroLineEnable||[!0,!0]).slice(),this.zeroLineWidth=(t.zeroLineWidth||[4,4]).slice(),this.zeroLineColor=i(t.zeroLineColor||[[0,0,0,1],[0,0,0,1]]),this.tickMarkLength=(t.tickMarkLength||[0,0,0,0]).slice(),this.tickMarkWidth=(t.tickMarkWidth||[0,0,0,0]).slice(),this.tickMarkColor=i(t.tickMarkColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]),this.titleCenter=(t.titleCenter||[.5*(n[0]+n[2])/r,(n[3]+120)/r]).slice(),this.titleEnable=!("titleEnable"in t&&!t.titleEnable),this.titleAngle=t.titleAngle||0,this.titleColor=(t.titleColor||[0,0,0,1]).slice(),this.labelPad=(t.labelPad||[15,15,15,15]).slice(),this.labelAngle=(t.labelAngle||[0,Math.PI/2,0,3*Math.PI/2]).slice(),this.labelEnable=(t.labelEnable||[!0,!0,!0,!0]).slice(),this.labelColor=i(t.labelColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]),this.tickPad=(t.tickPad||[15,15,15,15]).slice(),this.tickAngle=(t.tickAngle||[0,0,0,0]).slice(),this.tickEnable=(t.tickEnable||[!0,!0,!0,!0]).slice(),this.tickColor=i(t.tickColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]),this.borderLineEnable=(t.borderLineEnable||[!0,!0,!0,!0]).slice(),this.borderLineWidth=(t.borderLineWidth||[2,2,2,2]).slice(),this.borderLineColor=i(t.borderLineColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]);var s=t.ticks||[[],[]],l=this._tickBounds;l[0]=l[1]=1/0,l[2]=l[3]=-(1/0);for(var u=0;u<2;++u){var c=s[u].slice(0);0!==c.length&&(c.sort(a),l[u]=Math.min(l[u],c[0].x),l[u+2]=Math.max(l[u+2],c[c.length-1].x))}this.grid.update({bounds:l,ticks:s}),this.text.update({bounds:l,ticks:s,labels:t.labels||["x","y"],labelSize:t.labelSize||[12,12],labelFont:t.labelFont||["sans-serif","sans-serif"],title:t.title||"",titleSize:t.titleSize||18,titleFont:t.titleFont||"sans-serif"}),this.setDirty()},h.dispose=function(){this.box.dispose(),this.grid.dispose(),this.text.dispose(),this.line.dispose();for(var t=this.objects.length-1;t>=0;--t)this.objects[t].dispose();this.objects.length=0;for(var t=this.overlays.length-1;t>=0;--t)this.overlays[t].dispose();this.overlays.length=0,this.gl=null},h.addObject=function(t){this.objects.indexOf(t)<0&&(this.objects.push(t),this.setDirty())},h.removeObject=function(t){for(var e=this.objects,r=0;r<e.length;++r)if(e[r]===t){e.splice(r,1),this.setDirty();break}},h.addOverlay=function(t){this.overlays.indexOf(t)<0&&(this.overlays.push(t),this.setOverlayDirty())},h.removeOverlay=function(t){for(var e=this.overlays,r=0;r<e.length;++r)if(e[r]===t){e.splice(r,1),this.setOverlayDirty();break}}},{"./lib/box":79,"./lib/grid":80,"./lib/line":81,"./lib/text":83,"gl-select-static":95}],86:[function(t,e,r){"use strict";e.exports={vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  fragColor = color;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",fragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",pickVertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 id;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\nuniform vec4 pickOffset;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",pickFragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"}},{}],87:[function(t,e,r){"use strict";function n(t){if(t in h)return h[t];var e=c(t,{polygons:!0,font:"sans-serif",textAlign:"left",textBaseline:"alphabetic"}),r=[],n=[];e.forEach(function(t){t.forEach(function(t){for(var e=0;e<t.length;++e){var i=t[(e+t.length-1)%t.length],a=t[e],o=t[(e+1)%t.length],s=t[(e+2)%t.length],l=a[0]-i[0],u=a[1]-i[1],c=Math.sqrt(l*l+u*u);l/=c,u/=c,r.push(i[0],i[1]+1.4),n.push(u,-l),r.push(i[0],i[1]+1.4),n.push(-u,l),r.push(a[0],a[1]+1.4),n.push(-u,l),r.push(a[0],a[1]+1.4),n.push(-u,l),r.push(i[0],i[1]+1.4),n.push(u,-l),r.push(a[0],a[1]+1.4),n.push(u,-l);var f=s[0]-o[0],h=s[1]-o[1],d=Math.sqrt(f*f+h*h);f/=d,h/=d,r.push(a[0],a[1]+1.4),n.push(u,-l),r.push(a[0],a[1]+1.4),n.push(-u,l),r.push(o[0],o[1]+1.4),n.push(-h,f),r.push(o[0],o[1]+1.4),n.push(-h,f),r.push(a[0],a[1]+1.4),n.push(h,-f),r.push(o[0],o[1]+1.4),n.push(h,-f)}})});for(var i=[1/0,1/0,-(1/0),-(1/0)],a=0;a<r.length;a+=2)for(var o=0;o<2;++o)i[o]=Math.min(i[o],r[a+o]),i[2+o]=Math.max(i[2+o],r[a+o]);return h[t]={coords:r,normals:n,bounds:i}}function i(t,e,r,n,i,a,o){this.plot=t,this.shader=e,this.pickShader=r,this.positionBuffer=n,this.offsetBuffer=i,this.colorBuffer=a,this.idBuffer=o,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.numPoints=0,this.numVertices=0,this.pickOffset=0,this.points=null}function a(t,e){var r=t.gl,n=o(r,f.vertex,f.fragment),a=o(r,f.pickVertex,f.pickFragment),l=s(r),u=s(r),c=s(r),h=s(r),d=new i(t,n,a,l,u,c,h);return d.update(e),t.addObject(d),d}e.exports=a;var o=t("gl-shader"),s=t("gl-buffer"),l=t("text-cache"),u=t("typedarray-pool"),c=t("vectorize-text"),f=t("./lib/shaders"),h={},d=i.prototype;!function(){function t(){var t=this.plot,n=this.bounds,i=t.viewBox,a=t.dataBox,o=t.pixelRatio,s=n[2]-n[0],l=n[3]-n[1],u=a[2]-a[0],c=a[3]-a[1];e[0]=2*s/u,e[4]=2*l/c,e[6]=2*(n[0]-a[0])/u-1,e[7]=2*(n[1]-a[1])/c-1;var f=i[2]-i[0],h=i[3]-i[1];r[0]=2*o/f,r[1]=2*o/h}var e=[1,0,0,0,1,0,0,0,1],r=[1,1];d.draw=function(){var n=this.plot,i=this.shader,a=this.numVertices;if(a){var o=n.gl;t.call(this),i.bind(),i.uniforms.pixelScale=r,i.uniforms.viewTransform=e,this.positionBuffer.bind(),i.attributes.position.pointer(),this.offsetBuffer.bind(),i.attributes.offset.pointer(),this.colorBuffer.bind(),i.attributes.color.pointer(o.UNSIGNED_BYTE,!0),o.drawArrays(o.TRIANGLES,0,a)}};var n=[0,0,0,0];d.drawPick=function(i){var a=this.plot,o=this.pickShader,s=this.numVertices,l=a.gl;if(this.pickOffset=i,!s)return i;for(var u=0;u<4;++u)n[u]=i>>8*u&255;return t.call(this),o.bind(),o.uniforms.pixelScale=r,o.uniforms.viewTransform=e,o.uniforms.pickOffset=n,this.positionBuffer.bind(),o.attributes.position.pointer(),this.offsetBuffer.bind(),o.attributes.offset.pointer(),this.idBuffer.bind(),o.attributes.id.pointer(l.UNSIGNED_BYTE,!1),l.drawArrays(l.TRIANGLES,0,s),i+this.numPoints}}(),d.pick=function(t,e,r){var n=this.pickOffset,i=this.numPoints;if(r<n||r>=n+i)return null;var a=r-n,o=this.points;return{object:this,pointId:a,dataCoord:[o[2*a],o[2*a+1]]}},d.update=function(t){t=t||{};var e=t.positions||[],r=t.colors||[],i=t.glyphs||[],a=t.sizes||[],o=t.borderWidths||[],s=t.borderColors||[];this.points=e;for(var c=this.bounds=[1/0,1/0,-(1/0),-(1/0)],f=0,h=0;h<i.length;++h){f+=l("sans-serif",i[h]).data.length+n(i[h]).coords.length>>1;for(var d=0;d<2;++d)c[d]=Math.min(c[d],e[2*h+d]),c[2+d]=Math.max(c[2+d],e[2*h+d])}c[0]===c[2]&&(c[2]+=1),c[3]===c[1]&&(c[3]+=1);for(var p=1/(c[2]-c[0]),g=1/(c[3]-c[1]),v=c[0],m=c[1],y=u.mallocFloat32(2*f),b=u.mallocFloat32(2*f),x=u.mallocUint8(4*f),_=u.mallocUint32(f),w=0,h=0;h<i.length;++h){for(var A=l("sans-serif",i[h]),k=n(i[h]),M=p*(e[2*h]-v),E=g*(e[2*h+1]-m),T=a[h],L=255*r[4*h],S=255*r[4*h+1],C=255*r[4*h+2],R=255*r[4*h+3],I=.5*(k.bounds[0]+k.bounds[2]),P=.5*(k.bounds[1]+k.bounds[3]),d=0;d<A.data.length;d+=2)y[2*w]=M,y[2*w+1]=E,b[2*w]=-T*(A.data[d]-I),b[2*w+1]=-T*(A.data[d+1]-P),x[4*w]=L,x[4*w+1]=S,x[4*w+2]=C,x[4*w+3]=R,_[w]=h,w+=1;var O=o[h];L=255*s[4*h],S=255*s[4*h+1],C=255*s[4*h+2],R=255*s[4*h+3];for(var d=0;d<k.coords.length;d+=2)y[2*w]=M,y[2*w+1]=E,b[2*w]=-(T*(k.coords[d]-I)+O*k.normals[d]),b[2*w+1]=-(T*(k.coords[d+1]-P)+O*k.normals[d+1]),x[4*w]=L,x[4*w+1]=S,x[4*w+2]=C,x[4*w+3]=R,_[w]=h,w+=1}this.numPoints=i.length,this.numVertices=f,this.positionBuffer.update(y),this.offsetBuffer.update(b),this.colorBuffer.update(x),this.idBuffer.update(_),u.free(y),u.free(b),u.free(x),u.free(_)},d.dispose=function(){this.shader.dispose(),this.pickShader.dispose(),this.positionBuffer.dispose(),this.offsetBuffer.dispose(),this.colorBuffer.dispose(),this.idBuffer.dispose(),this.plot.removeObject(this)}},{"./lib/shaders":86,"gl-buffer":63,"gl-shader":96,"text-cache":156,"typedarray-pool":162,"vectorize-text":165}],88:[function(t,e,r){r.pointVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute float weight;\n\nuniform mat3 matrix;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}\n",r.pointFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}\n",r.pickVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n",r.pickFragment="precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"},{}],89:[function(t,e,r){arguments[4][45][0].apply(r,arguments)},{dup:45}],90:[function(t,e,r){"use strict";function n(t,e,r,n,a){a<=4*h?i(0,a-1,t,e,r,n):f(0,a-1,t,e,r,n)}function i(t,e,r,n,i,a){for(var o=t+1;o<=e;++o){for(var s=r[o],l=n[2*o],u=n[2*o+1],c=i[o],f=a[o],h=o;h>t;){var d=r[h-1],p=n[2*(h-1)];if((d-s||l-p)>=0)break;r[h]=d,n[2*h]=p,n[2*h+1]=n[2*h-1],i[h]=i[h-1],a[h]=a[h-1],h-=1}r[h]=s,n[2*h]=l,n[2*h+1]=u,i[h]=c,a[h]=f}}function a(t,e,r,n,i,a){var o=r[t],s=n[2*t],l=n[2*t+1],u=i[t],c=a[t];r[t]=r[e],n[2*t]=n[2*e],n[2*t+1]=n[2*e+1],i[t]=i[e],a[t]=a[e],r[e]=o,n[2*e]=s,n[2*e+1]=l,i[e]=u,a[e]=c}function o(t,e,r,n,i,a){r[t]=r[e],n[2*t]=n[2*e],n[2*t+1]=n[2*e+1],i[t]=i[e],a[t]=a[e]}function s(t,e,r,n,i,a,o){var s=n[t],l=i[2*t],u=i[2*t+1],c=a[t],f=o[t];n[t]=n[e],i[2*t]=i[2*e],i[2*t+1]=i[2*e+1],a[t]=a[e],o[t]=o[e],n[e]=n[r],i[2*e]=i[2*r],i[2*e+1]=i[2*r+1],a[e]=a[r],o[e]=o[r],n[r]=s,i[2*r]=l,i[2*r+1]=u,a[r]=c,o[r]=f}function l(t,e,r,n,i,a,o,s,l,u,c){s[t]=s[e],l[2*t]=l[2*e],l[2*t+1]=l[2*e+1],u[t]=u[e],c[t]=c[e],s[e]=r,l[2*e]=n,l[2*e+1]=i,u[e]=a,c[e]=o}function u(t,e,r,n,i){return(r[t]-r[e]||n[2*e]-n[2*t]||i[t]-i[e])<0}function c(t,e,r,n,i,a,o,s){return(e-a[t]||o[2*t]-r||i-s[t])<0}function f(t,e,r,n,d,p){
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v=u[2]-u[0],m=u[3]-u[1],y=g[2]-g[0],b=g[3]-g[1],x=(p[2]-p[0])*d/n.pixelRatio,_=(p[3]-p[1])*d/n.pixelRatio,w=Math.min(y/x,b/_);t[0]=2*v/y,t[4]=2*m/b,t[6]=2*(u[0]-g[0])/y-1,t[7]=2*(u[1]-g[1])/b-1,this.pickOffset=r,e[0]=255&r,e[1]=r>>8&255,e[2]=r>>16&255,e[3]=r>>24&255,i.bind(),i.uniforms.matrix=t,i.uniforms.color=this.color,i.uniforms.borderColor=this.borderColor,i.uniforms.pointSize=d*(c+f),i.uniforms.pickOffset=e,0===this.borderSize?i.uniforms.centerFraction=2:i.uniforms.centerFraction=c/(c+f+1.25),o.bind(),i.attributes.position.pointer(),l.bind(),i.attributes.pickId.pointer(h.UNSIGNED_BYTE);for(var A=this.xCoords,k=(g[0]-u[0]-w*c*d)/v,M=(g[2]-u[0]+w*c*d)/v,E=a.length-1;E>=0;--E){var T=a[E];if(!(T.pixelSize<w&&E>1)){var L=T.offset,S=T.count+L,C=s.ge(A,k,L,S-1),R=s.lt(A,M,C,S-1)+1;R>C&&h.drawArrays(h.POINTS,C,R-C)}}return r+this.pointCount}}(),f.draw=function(){var t=[1,0,0,0,1,0,0,0,1];return function(){var 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n=this.pickOffset,i=this.pointCount;if(r<n||r>=n+i)return null;var a=r-n,o=this.points;return{object:this,pointId:a,dataCoord:[o[2*a],o[2*a+1]]}}},{"./lib/shader":88,"binary-search-bounds":89,"gl-buffer":63,"gl-shader":96,"snap-points-2d":91,"typedarray-pool":162}],93:[function(t,e,r){"use strict";r.boxVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n",r.boxFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"},{}],94:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.boxBuffer=e,this.boxShader=r,this.enabled=!0,this.selectBox=[1/0,1/0,-(1/0),-(1/0)],this.borderColor=[0,0,0,1],this.innerFill=!1,this.innerColor=[0,0,0,.25],this.outerFill=!0,this.outerColor=[0,0,0,.5],this.borderWidth=10}function i(t,e){var r=t.gl,i=o(r,[0,0,0,1,1,0,1,1]),l=a(r,s.boxVertex,s.boxFragment),u=new n(t,i,l);return u.update(e),t.addOverlay(u),u}var a=t("gl-shader"),o=t("gl-buffer"),s=t("./lib/shaders");e.exports=i;var l=n.prototype;l.draw=function(){if(this.enabled){var t=this.plot,e=this.selectBox,r=this.borderWidth,n=(this.innerFill,this.innerColor),i=(this.outerFill,this.outerColor),a=this.borderColor,o=t.box,s=t.screenBox,l=t.dataBox,u=t.viewBox,c=t.pixelRatio,f=(e[0]-l[0])*(u[2]-u[0])/(l[2]-l[0])+u[0],h=(e[1]-l[1])*(u[3]-u[1])/(l[3]-l[1])+u[1],d=(e[2]-l[0])*(u[2]-u[0])/(l[2]-l[0])+u[0],p=(e[3]-l[1])*(u[3]-u[1])/(l[3]-l[1])+u[1];if(f=Math.max(f,u[0]),h=Math.max(h,u[1]),d=Math.min(d,u[2]),p=Math.min(p,u[3]),!(d<f||p<h)){o.bind();var g=s[2]-s[0],v=s[3]-s[1];if(this.outerFill&&(o.drawBox(0,0,g,h,i),o.drawBox(0,h,f,p,i),o.drawBox(0,p,g,v,i),o.drawBox(d,h,g,p,i)),this.innerFill&&o.drawBox(f,h,d,p,n),r>0){var m=r*c;o.drawBox(f-m,h-m,d+m,h+m,a),o.drawBox(f-m,p-m,d+m,p+m,a),o.drawBox(f-m,h-m,f+m,p+m,a),o.drawBox(d-m,h-m,d+m,p+m,a)}}}},l.update=function(t){t=t||{},this.innerFill=!!t.innerFill,this.outerFill=!!t.outerFill,this.innerColor=(t.innerColor||[0,0,0,.5]).slice(),this.outerColor=(t.outerColor||[0,0,0,.5]).slice(),this.borderColor=(t.borderColor||[0,0,0,1]).slice(),this.borderWidth=t.borderWidth||0,this.selectBox=(t.selectBox||this.selectBox).slice()},l.dispose=function(){this.boxBuffer.dispose(),this.boxShader.dispose(),this.plot.removeOverlay(this)}},{"./lib/shaders":93,"gl-buffer":63,"gl-shader":96}],95:[function(t,e,r){"use strict";function n(t,e,r,n,i){this.coord=[t,e],this.id=r,this.value=n,this.distance=i}function i(t,e,r){this.gl=t,this.fbo=e,this.buffer=r,this._readTimeout=null;var n=this;this._readCallback=function(){n.gl&&(e.bind(),t.readPixels(0,0,e.shape[0],e.shape[1],t.RGBA,t.UNSIGNED_BYTE,n.buffer),n._readTimeout=null)}}function a(t,e){var r=o(t,e),n=s.mallocUint8(e[0]*e[1]*4);return new i(t,r,n)}e.exports=a;var o=t("gl-fbo"),s=t("typedarray-pool"),l=t("ndarray"),u=t("bit-twiddle").nextPow2,c=t("cwise/lib/wrapper")({args:["array",{offset:[0,0,1],array:0},{offset:[0,0,2],array:0},{offset:[0,0,3],array:0},"scalar","scalar","index"],pre:{body:"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}",args:[],thisVars:["this_closestD2","this_closestX","this_closestY"],localVars:[]},body:{body:"{if(_inline_55_arg0_<255||_inline_55_arg1_<255||_inline_55_arg2_<255||_inline_55_arg3_<255){var 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i=n.selectAll(".svg-container").data([0]);i.enter().append("div").classed("svg-container",!0).style("position","relative"),i.html(""),e&&(t.data=e),r&&(t.layout=r),P.micropolar.manager.fillLayout(t),"initial"===t._fullLayout.autosize&&t._context.autosizable&&(A(t,{}),t._fullLayout.autosize=r.autosize=!0),i.style({width:t._fullLayout.width+"px",height:t._fullLayout.height+"px"}),t.framework=P.micropolar.manager.framework(t),t.framework({data:t.data,layout:t.layout},i.node()),t.framework.setUndoPoint();var a=t.framework.svg(),o=1,s=t._fullLayout.title;""!==s&&s||(o=0);var l="Click to enter title",u=function(){this.call(P.util.convertToTspans)},c=a.select(".title-group 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l=t.shapes[e];u(l,"xref"),u(l,"yref")}var c=t.legend;c&&(c.x>3?(c.x=1.02,c.xanchor="left"):c.x<-2&&(c.x=-.02,c.xanchor="right"),c.y>3?(c.y=1.02,c.yanchor="bottom"):c.y<-2&&(c.y=-.02,c.yanchor="top")),"rotate"===t.dragmode&&(t.dragmode="orbit"),t.scene1&&(t.scene||(t.scene=t.scene1),delete t.scene1);var f=D.getSubplotIds(t,"gl3d");for(e=0;e<f.length;e++){var d=t[f[e]],p=d.cameraposition;if(Array.isArray(p)&&4===p[0].length){var g=p[0],v=p[1],m=p[2],y=R([],g),b=[];for(r=0;r<3;++r)b[r]=v[e]+m*y[2+4*r];d.camera={eye:{x:b[0],y:b[1],z:b[2]},center:{x:v[0],y:v[1],z:v[2]},up:{x:y[1],y:y[5],z:y[9]}},delete d.cameraposition}}return B.clean(t),t}function u(t,e){var r=t[e],n=e.charAt(0);r&&"paper"!==r&&(t[e]=P.Axes.cleanId(r,n))}function c(t,e){for(var r=[],n=(t.concat(Array.isArray(e)?e:[]).filter(function(t){return"uid"in t}).map(function(t){return t.uid})),i=0;i<t.length;i++){var a,o=t[i];if(!("uid"in o)||r.indexOf(o.uid)!==-1){var 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i,a,o,s,l,u=O.isPlainObject(n),c=[];Array.isArray(r)||(r=[r]),r=p(r,t.data.length-1);for(var f in e)for(var h=0;h<r.length;h++){if(i=t.data[r[h]],o=O.nestedProperty(i,f),a=o.get(),s=e[f][h],!Array.isArray(s))throw new Error("attribute: "+f+" index: "+h+" must be an array");if(!Array.isArray(a))throw new Error("cannot extend missing or non-array attribute: "+f);l=u?n[f][h]:n,I(l)||(l=-1),c.push({prop:o,target:a,insert:s,maxp:Math.floor(l)})}return c}function x(t,e,r,n,i,a){y(t,e,r,n);for(var o,s,l,u=b(t,e,r,n),c=[],f={},h={},d=0;d<u.length;d++)s=u[d].prop,l=u[d].maxp,o=i(u[d].target,u[d].insert),l>=0&&l<o.length&&(c=a(o,l)),l=u[d].target.length,s.set(o),Array.isArray(f[s.astr])||(f[s.astr]=[]),Array.isArray(h[s.astr])||(h[s.astr]=[]),f[s.astr].push(c),h[s.astr].push(l);return{update:f,maxPoints:h}}function _(t){var e;if(O.swapAttrs(t,["?","?0","d?","?bins","nbins?","autobin?","?src","error_?"]),Array.isArray(t.z)&&Array.isArray(t.z[0])&&(t.transpose?delete t.transpose:t.transpose=!0),t.error_x&&t.error_y){var r=t.error_y,n="copy_ystyle"in r?r.copy_ystyle:!(r.color||r.thickness||r.width);O.swapAttrs(t,["error_?.copy_ystyle"]),n&&O.swapAttrs(t,["error_?.color","error_?.thickness","error_?.width"])}if(t.hoverinfo){var i=t.hoverinfo.split("+");for(e=0;e<i.length;e++)"x"===i[e]?i[e]="y":"y"===i[e]&&(i[e]="x");t.hoverinfo=i.join("+")}}function w(t){var e,r={left:0,right:0,bottom:0,top:0};if(t)for(e in t)t.hasOwnProperty(e)&&(r.left+=t[e].left||0,r.right+=t[e].right||0,r.bottom+=t[e].bottom||0,r.top+=t[e].top||0);return r}function A(t,e){var r,n,i,a=t._fullLayout,o=t._context;if(t.emit("plotly_autosize"),t._context.fillFrame)i=window.innerWidth,n=window.innerHeight,document.body.style.overflow="hidden";else if(I(o.frameMargins)&&o.frameMargins>0){var s=w(t._boundingBoxMargins),l=s.left+s.right,u=s.bottom+s.top,c=a._container.node().getBoundingClientRect(),f=1-2*o.frameMargins;i=Math.round(f*(c.width-l)),n=Math.round(f*(c.height-u))}else r=window.getComputedStyle(t),n=parseFloat(r.height)||a.height,i=parseFloat(r.width)||a.width;return Math.abs(a.width-i)>1||Math.abs(a.height-n)>1?(a.height=t.layout.height=n,a.width=t.layout.width=i):"initial"!==a.autosize&&(delete e.autosize,a.autosize=t.layout.autosize=!0),D.sanitizeMargins(a),e}function k(t){var e=C.select(t),r=t._fullLayout;if(r._container=e.selectAll(".plot-container").data([0]),r._container.enter().insert("div",":first-child").classed("plot-container",!0).classed("plotly",!0),r._paperdiv=r._container.selectAll(".svg-container").data([0]),r._paperdiv.enter().append("div").classed("svg-container",!0).style("position","relative"),"initial"===r.autosize&&(A(t,{}),r.autosize=!0,t.layout.autosize=!0),r._glcontainer=r._paperdiv.selectAll(".gl-container").data([0]),r._glcontainer.enter().append("div").classed("gl-container",!0),r._geocontainer=r._paperdiv.selectAll(".geo-container").data([0]),r._geocontainer.enter().append("div").classed("geo-container",!0),r._paperdiv.selectAll(".main-svg").remove(),r._paper=r._paperdiv.insert("svg",":first-child").classed("main-svg",!0),r._toppaper=r._paperdiv.append("svg").classed("main-svg",!0),!r._uid){var 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i.boxEnabled&&(o(s,i.boxStart[0],i.boxEnd[0]),o(l,i.boxStart[1],i.boxEnd[1]),i.boxEnabled=!1);break;case"pan":if(i.boxEnabled=!1,e){var p=(c-n)*(s[1]-s[0])/(r.viewBox[2]-r.viewBox[0]),g=(f-a)*(l[1]-l[0])/(r.viewBox[3]-r.viewBox[1]);s[0]+=p,s[1]+=p,l[0]+=g,l[1]+=g,i.lastInputTime=Date.now(),t.cameraChanged()}}i.lastPos[0]=n,i.lastPos[1]=a}),i.wheelListener=o(e,function(e,n){var a=t.xaxis.range,o=t.yaxis.range,s=r.viewBox,l=i.lastPos[0],u=i.lastPos[1];switch(t.fullLayout.dragmode){case"zoom":break;case"pan":var c=Math.exp(.1*n/(s[3]-s[1])),f=l/(s[2]-s[0])*(a[1]-a[0])+a[0],h=u/(s[3]-s[1])*(o[1]-o[0])+o[0];a[0]=(a[0]-f)*c+f,a[1]=(a[1]-f)*c+f,o[0]=(o[0]-h)*c+h,o[1]=(o[1]-h)*c+h,i.lastInputTime=Date.now(),t.cameraChanged()}return!0}),i}var a=t("mouse-change"),o=t("mouse-wheel");e.exports=i},{"mouse-change":118,"mouse-wheel":120}],299:[function(t,e,r){"use strict";function n(t){this.scene=t,this.gl=t.gl,this.pixelRatio=t.pixelRatio,this.screenBox=[0,0,1,1],this.viewBox=[0,0,1,1],this.dataBox=[-1,-1,1,1],this.borderLineEnable=[!1,!1,!1,!1],this.borderLineWidth=[1,1,1,1],this.borderLineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.ticks=[[],[]],this.tickEnable=[!0,!0,!1,!1],this.tickPad=[15,15,15,15],this.tickAngle=[0,0,0,0],this.tickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.tickMarkLength=[0,0,0,0],this.tickMarkWidth=[0,0,0,0],this.tickMarkColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.labels=["x","y"],this.labelEnable=[!0,!0,!1,!1],this.labelAngle=[0,Math.PI/2,0,3*Math.PI/2],this.labelPad=[15,15,15,15],this.labelSize=[12,12],this.labelFont=["sans-serif","sans-serif"],this.labelColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.title="",this.titleEnable=!0,this.titleCenter=[0,0,0,0],this.titleAngle=0,this.titleColor=[0,0,0,1],this.titleFont="sans-serif",this.titleSize=18,this.gridLineEnable=[!0,!0],this.gridLineColor=[[0,0,0,.5],[0,0,0,.5]],this.gridLineWidth=[1,1],this.zeroLineEnable=[!0,!0],this.zeroLineWidth=[1,1],this.zeroLineColor=[[0,0,0,1],[0,0,0,1]],this.borderColor=[0,0,0,0],this.backgroundColor=[0,0,0,0]}function i(t){return new n(t)}var a=t("../../plotly"),o=t("../../lib/html2unicode"),s=t("../../lib/str2rgbarray"),l=n.prototype,u=["xaxis","yaxis"];l.merge=function(t){this.titleEnable=!1,this.backgroundColor=s(t.plot_bgcolor);var e,r,n,i,a,l,c,f,h,d,p;for(d=0;d<2;++d){for(e=u[d],r=t[this.scene[e]._name],n=/Click to enter .+ title/.test(r.title)?"":r.title,p=0;p<=2;p+=2)this.labelEnable[d+p]=!1,this.labels[d+p]=o(n),this.labelColor[d+p]=s(r.titlefont.color),this.labelFont[d+p]=r.titlefont.family,this.labelSize[d+p]=r.titlefont.size,this.labelPad[d+p]=this.getLabelPad(e,r),this.tickEnable[d+p]=!1,this.tickColor[d+p]=s((r.tickfont||{}).color),this.tickAngle[d+p]="auto"===r.tickangle?0:Math.PI*-r.tickangle/180,this.tickPad[d+p]=this.getTickPad(r),this.tickMarkLength[d+p]=0,this.tickMarkWidth[d+p]=r.tickwidth||0,this.tickMarkColor[d+p]=s(r.tickcolor),this.borderLineEnable[d+p]=!1,this.borderLineColor[d+p]=s(r.linecolor),this.borderLineWidth[d+p]=r.linewidth||0;c=this.hasSharedAxis(r),a=this.hasAxisInDfltPos(e,r)&&!c,l=this.hasAxisInAltrPos(e,r)&&!c,i=r.mirror||!1,f=c?String(i).indexOf("all")!==-1:!!i,h=c?"allticks"===i:String(i).indexOf("ticks")!==-1,a?this.labelEnable[d]=!0:l&&(this.labelEnable[d+2]=!0),a?this.tickEnable[d]=r.showticklabels:l&&(this.tickEnable[d+2]=r.showticklabels),(a||f)&&(this.borderLineEnable[d]=r.showline),(l||f)&&(this.borderLineEnable[d+2]=r.showline),(a||h)&&(this.tickMarkLength[d]=this.getTickMarkLength(r)),(l||h)&&(this.tickMarkLength[d+2]=this.getTickMarkLength(r)),this.gridLineEnable[d]=r.showgrid,this.gridLineColor[d]=s(r.gridcolor),this.gridLineWidth[d]=r.gridwidth,this.zeroLineEnable[d]=r.zeroline,this.zeroLineColor[d]=s(r.zerolinecolor),this.zeroLineWidth[d]=r.zerolinewidth}},l.hasSharedAxis=function(t){var e=this.scene,r=a.Plots.getSubplotIds(e.fullLayout,"gl2d"),n=a.Axes.findSubplotsWithAxis(r,t);return 0!==n.indexOf(e.id)},l.hasAxisInDfltPos=function(t,e){var r=e.side;return"xaxis"===t?"bottom"===r:"yaxis"===t?"left"===r:void 0},l.hasAxisInAltrPos=function(t,e){var r=e.side;return"xaxis"===t?"top"===r:"yaxis"===t?"right"===r:void 0},l.getLabelPad=function(t,e){var r=1.5,n=e.titlefont.size,i=e.showticklabels;return"xaxis"===t?"top"===e.side?-10+n*(r+(i?1:0)):-10+n*(r+(i?.5:0)):"yaxis"===t?"right"===e.side?10+n*(r+(i?1:.5)):10+n*(r+(i?.5:0)):void 0},l.getTickPad=function(t){return"outside"===t.ticks?10+t.ticklen:15},l.getTickMarkLength=function(t){if(!t.ticks)return 0;var e=t.ticklen;return"inside"===t.ticks?-e:e},e.exports=i},{"../../lib/html2unicode":255,"../../lib/str2rgbarray":268,"../../plotly":276}],300:[function(t,e,r){"use strict";var n=t("./scene2d"),i=t("../plots"),a=t("../../constants/xmlns_namespaces");r.name="gl2d",r.attr=["xaxis","yaxis"],r.idRoot=["x","y"],r.idRegex={x:/^x([2-9]|[1-9][0-9]+)?$/,y:/^y([2-9]|[1-9][0-9]+)?$/},r.attrRegex={x:/^xaxis([2-9]|[1-9][0-9]+)?$/,y:/^yaxis([2-9]|[1-9][0-9]+)?$/},r.attributes=t("../cartesian/attributes"),r.plot=function(t){for(var e=t._fullLayout,r=t._fullData,a=i.getSubplotIds(e,"gl2d"),o=0;o<a.length;o++){var s=a[o],l=e._plots[s],u=i.getSubplotData(r,"gl2d",s),c=l._scene2d;void 0===c&&(c=new n({id:s,graphDiv:t,container:t.querySelector(".gl-container"),
++staticPlot:t._context.staticPlot,plotGlPixelRatio:t._context.plotGlPixelRatio},e),l._scene2d=c),c.plot(u,t.calcdata,e,t.layout)}},r.clean=function(t,e,r,n){for(var a=i.getSubplotIds(n,"gl2d"),o=0;o<a.length;o++){var s=a[o],l=n._plots[s];if(l._scene2d){var u=i.getSubplotData(t,"gl2d",s);0===u.length&&(l._scene2d.destroy(),delete n._plots[s])}}},r.toSVG=function(t){for(var e=t._fullLayout,r=i.getSubplotIds(e,"gl2d"),n=0;n<r.length;n++){var o=e._plots[r[n]],s=o._scene2d,l=s.toImage("png"),u=e._glimages.append("svg:image");u.attr({xmlns:a.svg,"xlink:href":l,x:0,y:0,width:"100%",height:"100%",preserveAspectRatio:"none"}),s.destroy()}}},{"../../constants/xmlns_namespaces":247,"../cartesian/attributes":278,"../plots":303,"./scene2d":301}],301:[function(t,e,r){"use strict";function n(t,e){this.container=t.container,this.graphDiv=t.graphDiv,this.pixelRatio=t.plotGlPixelRatio||window.devicePixelRatio,this.id=t.id,this.staticPlot=!!t.staticPlot,this.fullLayout=e,this.updateAxes(e),this.makeFramework(),this.glplotOptions=h(this),this.glplotOptions.merge(e),this.glplot=u(this.glplotOptions),this.camera=d(this),this.traces={},this.spikes=c(this.glplot),this.selectBox=f(this.glplot,{innerFill:!1,outerFill:!0}),this.pickResult=null,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.stopped=!1,this.redraw=this.draw.bind(this),this.redraw()}function i(t,e){for(var r=0;r<2;++r){var n=t[r],i=e[r];if(n.length!==i.length)return!0;for(var a=0;a<n.length;++a)if(n[a].x!==i[a].x)return!0}return!1}var a,o,s=t("../../plots/cartesian/axes"),l=t("../../plots/cartesian/graph_interact"),u=t("gl-plot2d"),c=t("gl-spikes2d"),f=t("gl-select-box"),h=t("./convert"),d=t("./camera"),p=t("../../lib/html2unicode"),g=t("../../lib/show_no_webgl_msg"),v=["xaxis","yaxis"];e.exports=n;var m=n.prototype;m.makeFramework=function(){if(this.staticPlot){if(!o){a=document.createElement("canvas");try{o=a.getContext("webgl",{preserveDrawingBuffer:!0,premultipliedAlpha:!0,antialias:!0})}catch(t){throw new Error(["Error creating static canvas/context for image server"].join(" "))}}this.canvas=a,this.gl=o}else{var t,e=document.createElement("canvas"),r={premultipliedAlpha:!0};try{t=e.getContext("webgl",r)}catch(t){}if(!t)try{t=e.getContext("experimental-webgl",r)}catch(t){}t||g(this),this.canvas=e,this.gl=t}var n=this.canvas,i=this.pixelRatio,s=this.fullLayout;n.width=0|Math.ceil(i*s.width),n.height=0|Math.ceil(i*s.height),n.style.width="100%",n.style.height="100%",n.style.position="absolute",n.style.top="0px",n.style.left="0px",n.style["pointer-events"]="none";var l=this.svgContainer=document.createElementNS("http://www.w3.org/2000/svg","svg");l.style.position="absolute",l.style.top=l.style.left="0px",l.style.width=l.style.height="100%",l.style["z-index"]=20,l.style["pointer-events"]="none";var u=this.mouseContainer=document.createElement("div");u.style.position="absolute";var c=this.container;c.appendChild(n),c.appendChild(l),c.appendChild(u)},m.toImage=function(t){t||(t="png"),this.stopped=!0,this.staticPlot&&this.container.appendChild(a),this.glplot.setDirty(),this.glplot.draw();var e=this.glplot.gl,r=e.drawingBufferWidth,n=e.drawingBufferHeight;e.bindFramebuffer(e.FRAMEBUFFER,null);var i=new Uint8Array(r*n*4);e.readPixels(0,0,r,n,e.RGBA,e.UNSIGNED_BYTE,i);for(var o=0,s=n-1;o<s;++o,--s)for(var l=0;l<r;++l)for(var u=0;u<4;++u){var c=i[4*(r*o+l)+u];i[4*(r*o+l)+u]=i[4*(r*s+l)+u],i[4*(r*s+l)+u]=c}var f=document.createElement("canvas");f.width=r,f.height=n;var h=f.getContext("2d"),d=h.createImageData(r,n);d.data.set(i),h.putImageData(d,0,0);var p;switch(t){case"jpeg":p=f.toDataURL("image/jpeg");break;case"webp":p=f.toDataURL("image/webp");break;default:p=f.toDataURL("image/png")}return this.staticPlot&&this.container.removeChild(a),p},m.computeTickMarks=function(){this.xaxis._length=this.glplot.viewBox[2]-this.glplot.viewBox[0],this.yaxis._length=this.glplot.viewBox[3]-this.glplot.viewBox[1];for(var t=[s.calcTicks(this.xaxis),s.calcTicks(this.yaxis)],e=0;e<2;++e)for(var r=0;r<t[e].length;++r)t[e][r].text=p(t[e][r].text+"").replace(/\n/g," ");return t},m.updateAxes=function(t){var e=s.subplotMatch,r="xaxis"+this.id.match(e)[1],n="yaxis"+this.id.match(e)[2];this.xaxis=t[r],this.yaxis=t[n]},m.updateFx=function(t){var e=this.fullLayout;e.dragmode=t.dragmode,e.hovermode=t.hovermode};var y=function(t){var e=t.xaxis.range,r=t.yaxis.range;t.graphDiv.layout.xaxis.range=e.slice(0),t.graphDiv.layout.yaxis.range=r.slice(0);var n={lastInputTime:t.camera.lastInputTime};n[t.xaxis._name]=e.slice(),n[t.yaxis._name]=r.slice(),t.graphDiv.emit("plotly_relayout",n)};m.cameraChanged=function(){var t=this.camera,e=this.xaxis.range,r=this.yaxis.range;this.glplot.setDataBox([e[0],r[0],e[1],r[1]]);var n=this.computeTickMarks(),a=this.glplotOptions.ticks;i(n,a)&&(this.glplotOptions.ticks=n,this.glplotOptions.dataBox=t.dataBox,this.glplot.update(this.glplotOptions),y(this))},m.destroy=function(){var t=this.traces;t&&Object.keys(t).map(function(e){t[e].dispose(),delete t[e]}),this.glplot.dispose(),this.staticPlot||this.container.removeChild(this.canvas),this.container.removeChild(this.svgContainer),this.container.removeChild(this.mouseContainer),this.glplot=null,this.stopped=!0},m.plot=function(t,e,r){var n,i,a,o=this.glplot,l=this.pixelRatio;this.fullLayout=r,this.updateAxes(r);var u=r.width,c=r.height,f=0|Math.ceil(l*u),h=0|Math.ceil(l*c),d=this.canvas;for(d.width===f&&d.height===h||(d.width=f,d.height=h),n=0;n<t.length;++n){var p=t[n],g=e[n];a=this.traces[p.uid],a?a.update(p,g):a=p._module.plot(this,p,g),this.traces[p.uid]=a}var m=Object.keys(this.traces);t:for(n=0;n<m.length;++n){for(i=0;i<e.length;++i)if(e[i][0].trace.uid===m[n])continue t;a=this.traces[m[n]],a.dispose(),delete this.traces[m[n]]}var y=this.glplotOptions;y.merge(r),y.screenBox=[0,0,u,c];var b=r._size,x=this.xaxis.domain,_=this.yaxis.domain;y.viewBox=[b.l+x[0]*b.w,b.b+_[0]*b.h,u-b.r-(1-x[1])*b.w,c-b.t-(1-_[1])*b.h],this.mouseContainer.style.width=b.w*(x[1]-x[0])+"px",this.mouseContainer.style.height=b.h*(_[1]-_[0])+"px",this.mouseContainer.height=b.h*(_[1]-_[0]),this.mouseContainer.style.left=b.l+x[0]*b.w+"px",this.mouseContainer.style.top=b.t+(1-_[1])*b.h+"px";var w=this.bounds;for(w[0]=w[1]=1/0,w[2]=w[3]=-(1/0),m=Object.keys(this.traces),n=0;n<m.length;++n){a=this.traces[m[n]];for(var A=0;A<2;++A)w[A]=Math.min(w[A],a.bounds[A]),w[A+2]=Math.max(w[A+2],a.bounds[A+2])}var k;for(n=0;n<2;++n)w[n]>w[n+2]&&(w[n]=-1,w[n+2]=1),k=this[v[n]],k._length=y.viewBox[n+2]-y.viewBox[n],s.doAutoRange(k);y.ticks=this.computeTickMarks();var M=this.xaxis.range,E=this.yaxis.range;y.dataBox=[M[0],E[0],M[1],E[1]],y.merge(r),o.update(y),this.glplot.draw()},m.draw=function(){if(!this.stopped){requestAnimationFrame(this.redraw);var t=this.glplot,e=this.camera,r=e.mouseListener,n=this.fullLayout;this.cameraChanged();var i=r.x*t.pixelRatio,a=this.canvas.height-t.pixelRatio*r.y;if(e.boxEnabled&&"zoom"===n.dragmode)this.selectBox.enabled=!0,this.selectBox.selectBox=[Math.min(e.boxStart[0],e.boxEnd[0]),Math.min(e.boxStart[1],e.boxEnd[1]),Math.max(e.boxStart[0],e.boxEnd[0]),Math.max(e.boxStart[1],e.boxEnd[1])],t.setDirty();else{this.selectBox.enabled=!1;var o=n._size,s=this.xaxis.domain,u=this.yaxis.domain,c=t.pick(i/t.pixelRatio+o.l+s[0]*o.w,a/t.pixelRatio-(o.t+(1-u[1])*o.h));if(c&&n.hovermode){var f=c.object._trace.handlePick(c);if(f&&(!this.lastPickResult||this.lastPickResult.traceUid!==f.trace.uid||this.lastPickResult.dataCoord[0]!==f.dataCoord[0]||this.lastPickResult.dataCoord[1]!==f.dataCoord[1])){var h=f;this.lastPickResult={traceUid:f.trace?f.trace.uid:null,dataCoord:f.dataCoord.slice()},this.spikes.update({center:c.dataCoord}),h.screenCoord=[((t.viewBox[2]-t.viewBox[0])*(c.dataCoord[0]-t.dataBox[0])/(t.dataBox[2]-t.dataBox[0])+t.viewBox[0])/t.pixelRatio,(this.canvas.height-(t.viewBox[3]-t.viewBox[1])*(c.dataCoord[1]-t.dataBox[1])/(t.dataBox[3]-t.dataBox[1])-t.viewBox[1])/t.pixelRatio];var d=h.hoverinfo;if("all"!==d){var p=d.split("+");p.indexOf("x")===-1&&(h.traceCoord[0]=void 0),p.indexOf("y")===-1&&(h.traceCoord[1]=void 0),p.indexOf("z")===-1&&(h.traceCoord[2]=void 0),p.indexOf("text")===-1&&(h.textLabel=void 0),p.indexOf("name")===-1&&(h.name=void 0)}l.loneHover({x:h.screenCoord[0],y:h.screenCoord[1],xLabel:this.hoverFormatter("xaxis",h.traceCoord[0]),yLabel:this.hoverFormatter("yaxis",h.traceCoord[1]),zLabel:h.traceCoord[2],text:h.textLabel,name:h.name,color:h.color},{container:this.svgContainer})}}else!c&&this.lastPickResult&&(this.spikes.update({}),this.lastPickResult=null,l.loneUnhover(this.svgContainer))}t.draw()}},m.hoverFormatter=function(t,e){if(void 0!==e){var r=this[t];return s.tickText(r,r.c2l(e),"hover").text}}},{"../../lib/html2unicode":255,"../../lib/show_no_webgl_msg":266,"../../plots/cartesian/axes":279,"../../plots/cartesian/graph_interact":286,"./camera":298,"./convert":299,"gl-plot2d":85,"gl-select-box":94,"gl-spikes2d":103}],302:[function(t,e,r){"use strict";var n=t("../plotly"),i=t("./font_attributes"),a=t("../components/color/attributes"),o=n.Lib.extendFlat;e.exports={font:{family:o({},i.family,{dflt:'"Open Sans", verdana, arial, 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tt=i.max(B.selectAll(".angular-tick text")[0].map(function(t,e){return t.getCTM().e+t.getBBox().width}));F.attr({transform:"translate("+[b+tt,f.margin.top]+")"});var et=e.select("g.geometry-group").selectAll("g").size()>0,rt=e.select("g.geometry-group").selectAll("g.geometry").data(d);if(rt.enter().append("g").attr({class:function(t,e){return"geometry geometry"+e}}),rt.exit().remove(),d[0]||et){var nt=[];d.forEach(function(t,e){var r={};r.radialScale=n,
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t={data:{name:"geom1",t:[[1,2,3,4]],r:[[1,2,3,4]],dotType:"circle",dotSize:64,dotVisible:!1,barWidth:20,color:"#ffa500",strokeSize:1,strokeColor:"silver",strokeDash:"solid",opacity:1,index:0,visible:!0,visibleInLegend:!0},geometryConfig:{geometry:"LinePlot",geometryType:"arc",direction:"clockwise",orientation:0,container:"body",radialScale:null,angularScale:null,colorScale:i.scale.category20()}};return t},a.BarChart=function(){return a.PolyChart()},a.BarChart.defaultConfig=function(){var t={geometryConfig:{geometryType:"bar"}};return t},a.AreaChart=function(){return a.PolyChart()},a.AreaChart.defaultConfig=function(){var t={geometryConfig:{geometryType:"arc"}};return t},a.DotPlot=function(){return a.PolyChart()},a.DotPlot.defaultConfig=function(){var t={geometryConfig:{geometryType:"dot",dotType:"circle"}};return t},a.LinePlot=function(){return a.PolyChart()},a.LinePlot.defaultConfig=function(){var t={geometryConfig:{geometryType:"line"}};return t},a.Legend=function(){function t(){var 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g=i.range(a.length),v=i.scale[c?"linear":"ordinal"]().domain(g).range(l),m=i.scale[c?"linear":"ordinal"]().domain(g)[c?"range":"rangePoints"]([0,f]),y=function(t,e){var r=3*e;return"line"===t?"M"+[[-e/2,-e/12],[e/2,-e/12],[e/2,e/12],[-e/2,e/12]]+"Z":i.svg.symbolTypes.indexOf(t)!=-1?i.svg.symbol().type(t).size(r)():i.svg.symbol().type("square").size(r)()};if(c){var b=d.select(".legend-marks").append("defs").append("linearGradient").attr({id:"grad1",x1:"0%",y1:"0%",x2:"0%",y2:"100%"}).selectAll("stop").data(l);b.enter().append("stop"),b.attr({offset:function(t,e){return e/(l.length-1)*100+"%"}}).style({"stop-color":function(t,e){return t}}),d.append("rect").classed("legend-mark",!0).attr({height:r.height,width:r.colorBandWidth,fill:"url(#grad1)"})}else{var x=d.select(".legend-marks").selectAll("path.legend-mark").data(a);x.enter().append("path").classed("legend-mark",!0),x.attr({transform:function(t,e){return"translate("+[u/2,m(e)+u/2]+")"},d:function(t,e){var r=t.symbol;return y(r,u)},fill:function(t,e){return v(e)}}),x.exit().remove()}var _=i.svg.axis().scale(m).orient("right"),w=d.select("g.legend-axis").attr({transform:"translate("+[c?r.colorBandWidth:u,u/2]+")"}).call(_);return w.selectAll(".domain").style({fill:"none",stroke:"none"}),w.selectAll("line").style({fill:"none",stroke:c?r.textColor:"none"}),w.selectAll("text").style({fill:r.textColor,"font-size":r.fontSize}).text(function(t,e){return a[e].name}),t}var e=a.Legend.defaultConfig(),r=i.dispatch("hover");return t.config=function(t){return arguments.length?(o(e,t),this):e},i.rebind(t,r,"on"),t},a.Legend.defaultConfig=function(t,e){var r={data:["a","b","c"],legendConfig:{elements:[{symbol:"line",color:"red"},{symbol:"square",color:"yellow"},{symbol:"diamond",color:"limegreen"}],height:150,colorBandWidth:30,fontSize:12,container:"body",isContinuous:null,textColor:"grey",reverseOrder:!1}};return r},a.tooltipPanel=function(){var t,e,r,n={container:null,hasTick:!1,fontSize:12,color:"white",padding:5},s="tooltip-"+a.tooltipPanel.uid++,l=10,u=function(){t=n.container.selectAll("g."+s).data([0]);var i=t.enter().append("g").classed(s,!0).style({"pointer-events":"none",display:"none"});return r=i.append("path").style({fill:"white","fill-opacity":.9}).attr({d:"M0 0"}),e=i.append("text").attr({dx:n.padding+l,dy:.3*+n.fontSize}),u};return u.text=function(a){var o=i.hsl(n.color).l,s=o>=.5?"#aaa":"white",c=o>=.5?"black":"white",f=a||"";e.style({fill:c,"font-size":n.fontSize+"px"}).text(f);var h=n.padding,d=e.node().getBBox(),p={fill:n.color,stroke:s,"stroke-width":"2px"},g=d.width+2*h+l,v=d.height+2*h;return r.attr({d:"M"+[[l,-v/2],[l,-v/4],[n.hasTick?0:l,0],[l,v/4],[l,v/2],[g,v/2],[g,-v/2]].join("L")+"Z"}).style(p),t.attr({transform:"translate("+[l,-v/2+2*h]+")"}),t.style({display:"block"}),u},u.move=function(e){if(t)return t.attr({transform:"translate("+[e[0],e[1]]+")"}).style({display:"block"}),u},u.hide=function(){if(t)return t.style({display:"none"}),u},u.show=function(){if(t)return t.style({display:"block"}),u},u.config=function(t){return o(n,t),u},u},a.tooltipPanel.uid=1,a.adapter={},a.adapter.plotly=function(){var t={};return t.convert=function(t,e){var r={};if(t.data&&(r.data=t.data.map(function(t,r){var n=o({},t),i=[[n,["marker","color"],["color"]],[n,["marker","opacity"],["opacity"]],[n,["marker","line","color"],["strokeColor"]],[n,["marker","line","dash"],["strokeDash"]],[n,["marker","line","width"],["strokeSize"]],[n,["marker","symbol"],["dotType"]],[n,["marker","size"],["dotSize"]],[n,["marker","barWidth"],["barWidth"]],[n,["line","interpolation"],["lineInterpolation"]],[n,["showlegend"],["visibleInLegend"]]];return i.forEach(function(t,r){a.util.translator.apply(null,t.concat(e))}),e||delete n.marker,e&&delete n.groupId,e?("LinePlot"===n.geometry?(n.type="scatter",n.dotVisible===!0?(delete n.dotVisible,n.mode="lines+markers"):n.mode="lines"):"DotPlot"===n.geometry?(n.type="scatter",n.mode="markers"):"AreaChart"===n.geometry?n.type="area":"BarChart"===n.geometry&&(n.type="bar"),delete n.geometry):("scatter"===n.type?"lines"===n.mode?n.geometry="LinePlot":"markers"===n.mode?n.geometry="DotPlot":"lines+markers"===n.mode&&(n.geometry="LinePlot",n.dotVisible=!0):"area"===n.type?n.geometry="AreaChart":"bar"===n.type&&(n.geometry="BarChart"),delete n.mode,delete n.type),n}),!e&&t.layout&&"stack"===t.layout.barmode)){var n=a.util.duplicates(r.data.map(function(t,e){return t.geometry}));r.data.forEach(function(t,e){var i=n.indexOf(t.geometry);i!=-1&&(r.data[e].groupId=i)})}if(t.layout){var s=o({},t.layout),l=[[s,["plot_bgcolor"],["backgroundColor"]],[s,["showlegend"],["showLegend"]],[s,["radialaxis"],["radialAxis"]],[s,["angularaxis"],["angularAxis"]],[s.angularaxis,["showline"],["gridLinesVisible"]],[s.angularaxis,["showticklabels"],["labelsVisible"]],[s.angularaxis,["nticks"],["ticksCount"]],[s.angularaxis,["tickorientation"],["tickOrientation"]],[s.angularaxis,["ticksuffix"],["ticksSuffix"]],[s.angularaxis,["range"],["domain"]],[s.angularaxis,["endpadding"],["endPadding"]],[s.radialaxis,["showline"],["gridLinesVisible"]],[s.radialaxis,["tickorientation"],["tickOrientation"]],[s.radialaxis,["ticksuffix"],["ticksSuffix"]],[s.radialaxis,["range"],["domain"]],[s.angularAxis,["showline"],["gridLinesVisible"]],[s.angularAxis,["showticklabels"],["labelsVisible"]],[s.angularAxis,["nticks"],["ticksCount"]],[s.angularAxis,["tickorientation"],["tickOrientation"]],[s.angularAxis,["ticksuffix"],["ticksSuffix"]],[s.angularAxis,["range"],["domain"]],[s.angularAxis,["endpadding"],["endPadding"]],[s.radialAxis,["showline"],["gridLinesVisible"]],[s.radialAxis,["tickorientation"],["tickOrientation"]],[s.radialAxis,["ticksuffix"],["ticksSuffix"]],[s.radialAxis,["range"],["domain"]],[s.font,["outlinecolor"],["outlineColor"]],[s.legend,["traceorder"],["reverseOrder"]],[s,["labeloffset"],["labelOffset"]],[s,["defaultcolorrange"],["defaultColorRange"]]];if(l.forEach(function(t,r){a.util.translator.apply(null,t.concat(e))}),e?("undefined"!=typeof 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Try {format:'svg'} instead.")),t._snapshotInProgress=!0;var s=i(t,e),l=e.filename||t.fn||"newplot";l+="."+e.format,s.then(function(e){return t._snapshotInProgress=!1,o(e,l)}).then(function(t){r(t)}).catch(function(e){t._snapshotInProgress=!1,n(e)})})}var i=t("../plot_api/to_image"),a=t("../lib"),o=t("./filesaver");e.exports=n},{"../lib":256,"../plot_api/to_image":274,"./filesaver":311}],311:[function(t,e,r){"use strict";var n=function(t,e){var r=document.createElement("a"),n="download"in r,i=/Version\/[\d\.]+.*Safari/.test(navigator.userAgent),a=new Promise(function(a,o){"undefined"!=typeof navigator&&/MSIE [1-9]\./.test(navigator.userAgent)&&o(new Error("IE < 10 unsupported")),i&&(document.location.href="data:application/octet-stream"+t.slice(t.search(/[,;]/)),a(e)),e||(e="download"),n&&(r.href=t,r.download=e,document.body.appendChild(r),r.click(),document.body.removeChild(r),a(e)),"undefined"!=typeof navigator&&navigator.msSaveBlob&&(navigator.msSaveBlob(new Blob([t]),e),a(e)),o(new Error("download error"))});return a};e.exports=n},{}],312:[function(t,e,r){"use strict";function n(t){return t._has&&(t._has("gl3d")||t._has("gl2d"))?500:0}function i(t){if(!(t.data&&t.data[0]&&t.data[0].r))return function(){(t.calcdata||[]).forEach(function(t){t[0]&&t[0].t&&t[0].t.cb&&t[0].t.cb()})}}var a={getDelay:n,getRedrawFunc:i,clone:t("./cloneplot"),toSVG:t("./tosvg"),svgToImg:t("./svgtoimg"),toImage:t("./toimage"),downloadImage:t("./download")};e.exports=a},{"./cloneplot":309,"./download":310,"./svgtoimg":313,"./toimage":314,"./tosvg":315}],313:[function(t,e,r){"use strict";function n(t){var e=t.emitter||new a,r=new Promise(function(n,a){var o=window.Image,s=t.svg,l=t.format||"png";if(i.isIE()&&(s=s.replace(/"/gi,"'"),s=s.replace(/(\('#)(.*)('\))/gi,'("$2")'),s=s.replace(/(\\')/gi,'"'),"svg"!==l)){var u=new Error("Sorry IE does not support downloading from canvas. 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f=l._basePlotModules||[];for(r=0;r<f.length;r++){var h=f[r];h.toSVG&&h.toSVG(t)}if(c){var d=c.node().childNodes,p=Array.prototype.slice.call(d);for(r=0;r<p.length;r++){var g=p[r];g.childNodes.length&&u.node().appendChild(g)}}l._draggers&&l._draggers.remove(),u.node().style.background="",u.selectAll("text").attr("data-unformatted",null).each(function(){var t=n.select(this);if("hidden"===t.style("visibility"))return void t.remove();var e=t.style("font-family");e&&e.indexOf('"')!==-1&&t.style("font-family",e.replace(/"/g,"TOBESTRIPPED"))}),"pdf"!==e&&"eps"!==e||u.selectAll("#MathJax_SVG_glyphs path").attr("stroke-width",0),u.node().setAttributeNS(s.xmlns,"xmlns",s.svg),u.node().setAttributeNS(s.xmlns,"xmlns:xlink",s.xlink);var v=(new window.XMLSerializer).serializeToString(u.node());return v=i.html_entity_decode(v),v=i.xml_entity_encode(v),v=v.replace(/("TOBESTRIPPED)|(TOBESTRIPPED")/g,"'")}},{"../components/color":176,"../components/drawing":199,"../constants/xmlns_namespaces":247,"../lib/svg_text_utils":269,d3:54}],316:[function(t,e,r){"use strict";var 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n=t("../../plots/cartesian/axes"),i=t("../heatmap/calc");e.exports=function(t,e){var r=i(t,e),a=e.contours;if(e.autocontour!==!1){var o={type:"linear",range:[e.zmin,e.zmax]};n.autoTicks(o,(e.zmax-e.zmin)/(e.ncontours||15)),a.start=n.tickFirst(o),a.size=o.dtick,o.range.reverse(),a.end=n.tickFirst(o),a.start===e.zmin&&(a.start+=a.size),a.end===e.zmax&&(a.end-=a.size),a.end+=a.size/100,e._input.contours=a}return r}},{"../../plots/cartesian/axes":279,"../heatmap/calc":325}],318:[function(t,e,r){"use strict";var n=t("../../plots/plots"),i=t("../../components/colorbar/draw"),a=t("./make_color_map");e.exports=function(t,e){var r=e[0].trace,o="cb"+r.uid;if(t._fullLayout._infolayer.selectAll("."+o).remove(),r.showscale===!1)return void n.autoMargin(t,o);var s=i(t,o);e[0].t.cb=s;var 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n=t("../../lib"),i=t("./attributes"),a=t("./constants"),o=t("./subtypes"),s=t("./xy_defaults"),l=t("./marker_defaults"),u=t("./line_defaults"),c=t("./line_shape_defaults"),f=t("./text_defaults"),h=t("./fillcolor_defaults"),d=t("../../components/errorbars/defaults");e.exports=function(t,e,r,p){function g(r,a){return n.coerce(t,e,i,r,a)}var v=s(t,e,g),m=v<a.PTS_LINESONLY?"lines+markers":"lines";if(!v)return void(e.visible=!1);g("text"),g("mode",m),o.hasLines(e)&&(u(t,e,r,p,g),c(t,e,g),g("connectgaps")),o.hasMarkers(e)&&l(t,e,r,p,g),o.hasText(e)&&f(t,e,p,g);var 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r,a;if("lines"===t.mode)return r=t.line.color,r&&n.opacity(r)?r:t.fillcolor;if("none"===t.mode)return t.fill?t.fillcolor:"";var o=e.mcc||(t.marker||{}).color,s=e.mlcc||((t.marker||{}).line||{}).color;return a=o&&n.opacity(o)?o:s&&n.opacity(s)&&(e.mlw||((t.marker||{}).line||{}).width)?s:"",a?n.opacity(a)<.3?n.addOpacity(a,.3):a:(r=(t.line||{}).color,r&&n.opacity(r)&&i.hasLines(t)&&t.line.width?r:t.fillcolor)}},{"../../components/color":176,"./subtypes":360}],350:[function(t,e,r){"use strict";var n=t("../../lib"),i=t("../../plots/cartesian/graph_interact"),a=t("../../plots/cartesian/constants"),o=t("../../components/errorbars"),s=t("./get_trace_color"),l=t("../../components/color");e.exports=function(t,e,r,u){var c=t.cd,f=c[0].trace,h=t.xa,d=t.ya,p=h.c2p(e),g=d.c2p(r),v=[p,g];if(f.hoveron.indexOf("points")!==-1){var m=function(t){var e=Math.max(3,t.mrc||0);return Math.max(Math.abs(h.c2p(t.x)-p)-e,1-3/e)},y=function(t){var e=Math.max(3,t.mrc||0);return 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l.opacity(f.fillcolor)?V=f.fillcolor:l.opacity((f.line||{}).color)&&(V=f.line.color),n.extendFlat(t,{distance:a.MAXDIST+10,x0:D,x1:F,y0:U,y1:U,color:V}),delete t.index,f.text&&!Array.isArray(f.text)?t.text=String(f.text):t.text=f.name,[t]}}}},{"../../components/color":176,"../../components/errorbars":205,"../../lib":256,"../../plots/cartesian/constants":284,"../../plots/cartesian/graph_interact":286,"./get_trace_color":349}],351:[function(t,e,r){"use strict";var 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e=this.scene,r=e.xaxis,n=e.yaxis,a=this.bounds,o=this.pickXData=r.makeCalcdata(t,"x").slice(),l=this.pickYData=n.makeCalcdata(t,"y").slice();this.xData=o.slice(),this.yData=l.slice();var c,f,h,d,p,g,v,m,b=y.calcFromTrace(t,e.fullLayout),x=o.length,_=new Array(x),A=new Float32Array(2*x),k=new Float32Array(4*x),M=new Float32Array(4*x),E=0,T=0,S=0,R=0,I="log"===r.type?function(t){return r.d2l(t)}:function(t){return t},P="log"===n.type?function(t){return n.d2l(t)}:function(t){return t};for(c=0;c<x;++c)this.xData[c]=h=I(o[c]),this.yData[c]=d=P(l[c]),isNaN(h)||isNaN(d)||(_[E++]=c,A[T++]=h,A[T++]=d,p=k[S++]=h-b[c].xs||0,g=k[S++]=b[c].xh-h||0,k[S++]=0,k[S++]=0,M[R++]=0,M[R++]=0,v=M[R++]=d-b[c].ys||0,m=M[R++]=b[c].yh-d||0,a[0]=Math.min(a[0],h-p),a[1]=Math.min(a[1],d-v),a[2]=Math.max(a[2],h+g),a[3]=Math.max(a[3],d+m));A=u(A,T),this.idToIndex=_,this.updateLines(t,A),this.updateError("X",t,A,k),this.updateError("Y",t,A,M);var O;if(this.hasMarkers){this.scatterOptions.positions=A,this.scatterOptions.sizes=new Array(E),this.scatterOptions.glyphs=new Array(E),this.scatterOptions.borderWidths=new Array(E),this.scatterOptions.colors=new Array(4*E),this.scatterOptions.borderColors=new Array(4*E);var N,z=w(t),D=t.marker,F=D.opacity,B=t.opacity,j=s(D,F,B,x),U=C(D.symbol,x),V=L(D.line.width,x),q=s(D.line,F,B,x);for(O=i(z,D.size,x),c=0;c<E;++c)for(N=_[c],this.scatterOptions.sizes[c]=4*O[N],this.scatterOptions.glyphs[c]=U[N],this.scatterOptions.borderWidths[c]=.5*V[N],f=0;f<4;++f)this.scatterOptions.colors[4*c+f]=j[4*N+f],this.scatterOptions.borderColors[4*c+f]=q[4*N+f];this.fancyScatter.update(this.scatterOptions)}else this.scatterOptions.positions=new Float32Array(0),this.scatterOptions.glyphs=[],this.fancyScatter.update(this.scatterOptions);this.scatterOptions.positions=new Float32Array(0),this.scatterOptions.glyphs=[],this.scatter.update(this.scatterOptions),this.expandAxesFancy(o,l,O)},T.updateLines=function(t,e){var r;if(this.hasLines){var n=e;if(!t.connectgaps){var i=0,a=this.xData,s=this.yData;for(n=new Float32Array(2*a.length),r=0;r<a.length;++r)n[i++]=a[r],n[i++]=s[r]}this.lineOptions.positions=n;var l=o(t.line.color,t.opacity,1),u=Math.round(.5*this.lineOptions.width),c=(M[t.line.dash]||[1]).slice();for(r=0;r<c.length;++r)c[r]*=u;switch(t.fill){case"tozeroy":this.lineOptions.fill=[!1,!0,!1,!1];break;case"tozerox":this.lineOptions.fill=[!0,!1,!1,!1];break;default:this.lineOptions.fill=[!1,!1,!1,!1]}var f=b(t.fillcolor);this.lineOptions.color=l,this.lineOptions.width=2*t.line.width,this.lineOptions.dashes=c,this.lineOptions.fillColor=[f,f,f,f]}else this.lineOptions.positions=new Float32Array(0);this.line.update(this.lineOptions)},T.updateError=function(t,e,r,n){var i=this["error"+t],a=e["error_"+t.toLowerCase()],s=this["error"+t+"Options"];"x"===t.toLowerCase()&&a.copy_ystyle&&(a=e.error_y),this["hasError"+t]?(s.positions=r,s.errors=n,s.capSize=a.width,s.lineWidth=a.thickness/2,s.color=o(a.color,1,1)):s.positions=new Float32Array(0),i.update(s)},T.expandAxesFast=function(t,e){for(var r,n,i,a=e||10,o=0;o<2;o++)r=this.scene[E[o]],n=r._min,n||(n=[]),n.push({val:t[o],pad:a}),i=r._max,i||(i=[]),i.push({val:t[o+2],pad:a})},T.expandAxesFancy=function(t,e,r){var n=this.scene,i={padded:!0,ppad:r};m.expand(n.xaxis,t,i),m.expand(n.yaxis,e,i)},T.dispose=function(){this.line.dispose(),this.errorX.dispose(),this.errorY.dispose(),this.scatter.dispose(),this.fancyScatter.dispose()},e.exports=c},{"../../components/errorbars":205,"../../constants/gl2d_dashes":245,"../../constants/gl_markers":246,"../../lib":256,"../../lib/gl_format_color":254,"../../lib/str2rgbarray":268,"../../plots/cartesian/axes":279,"../scatter/get_trace_color":349,"../scatter/make_bubble_size_func":355,"../scatter/subtypes":360,"fast-isnumeric":60,"gl-error2d":69,"gl-line2d":77,"gl-scatter2d":92,"gl-scatter2d-fancy":87}],366:[function(t,e,r){"use strict";var n=t("../../lib"),i=t("../scatter/constants"),a=t("../scatter/subtypes"),o=t("../scatter/xy_defaults"),s=t("../scatter/marker_defaults"),l=t("../scatter/line_defaults"),u=t("../scatter/fillcolor_defaults"),c=t("../../components/errorbars/defaults"),f=t("./attributes");e.exports=function(t,e,r,h){function d(r,i){return n.coerce(t,e,f,r,i)}var p=o(t,e,d);return p?(d("text"),d("mode",p<i.PTS_LINESONLY?"lines+markers":"lines"),a.hasLines(e)&&(d("connectgaps"),l(t,e,r,h,d)),a.hasMarkers(e)&&s(t,e,r,h,d),d("fill"),"none"!==e.fill&&u(t,e,r,d),c(t,e,r,{axis:"y"}),void c(t,e,r,{axis:"x",inherit:"y"})):void(e.visible=!1)}},{"../../components/errorbars/defaults":204,"../../lib":256,"../scatter/constants":346,"../scatter/fillcolor_defaults":348,"../scatter/line_defaults":352,"../scatter/marker_defaults":356,"../scatter/subtypes":360,"../scatter/xy_defaults":362,"./attributes":364}],367:[function(t,e,r){"use strict";var n={};n.attributes=t("./attributes"),n.supplyDefaults=t("./defaults"),n.colorbar=t("../scatter/colorbar"),n.calc=t("../scatter3d/calc"),n.plot=t("./convert"),n.moduleType="trace",n.name="scattergl",n.basePlotModule=t("../../plots/gl2d"),n.categories=["gl2d","symbols","errorBarsOK","markerColorscale","showLegend"],n.meta={},e.exports=n},{"../../plots/gl2d":300,"../scatter/colorbar":344,"../scatter3d/calc":363,"./attributes":364,"./convert":365,"./defaults":366}]},{},[6])(6)});
+\ No newline at end of file
+diff --git a/dist/plotly-gl3d.js b/dist/plotly-gl3d.js
+index f71731f..da4e8cc 100644
+--- a/dist/plotly-gl3d.js
++++ b/dist/plotly-gl3d.js
+@@ -68,7 +68,7 @@ for(var selector in rules) {
+     Plotly.Lib.addStyleRule(fullSelector, rules[selector]);
+ }
+ 
+-},{"../src/plotly":367}],2:[function(require,module,exports){
++},{"../src/plotly":361}],2:[function(require,module,exports){
+ 'use strict';
+ 
+ module.exports = {
+@@ -199,7 +199,7 @@ module.exports = {
+ 
+ module.exports = require('../src/core');
+ 
+-},{"../src/core":339}],4:[function(require,module,exports){
++},{"../src/core":333}],4:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -231,7 +231,7 @@ module.exports = Plotly;
+ 
+ module.exports = require('../src/traces/mesh3d');
+ 
+-},{"../src/traces/mesh3d":421}],6:[function(require,module,exports){
++},{"../src/traces/mesh3d":415}],6:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -242,7 +242,7 @@ module.exports = require('../src/traces/mesh3d');
+ 
+ module.exports = require('../src/traces/scatter3d');
+ 
+-},{"../src/traces/scatter3d":451}],7:[function(require,module,exports){
++},{"../src/traces/scatter3d":445}],7:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -253,11364 +253,9130 @@ module.exports = require('../src/traces/scatter3d');
+ 
+ module.exports = require('../src/traces/surface');
+ 
+-},{"../src/traces/surface":457}],8:[function(require,module,exports){
++},{"../src/traces/surface":451}],8:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createFilteredVector
++module.exports = createCamera
+ 
+-var cubicHermite = require('cubic-hermite')
+-var bsearch = require('binary-search-bounds')
++var now         = require('right-now')
++var createView  = require('3d-view')
++var mouseChange = require('mouse-change')
++var mouseWheel  = require('mouse-wheel')
+ 
+-function clamp(lo, hi, x) {
+-  return Math.min(hi, Math.max(lo, x))
+-}
++function createCamera(element, options) {
++  element = element || document.body
++  options = options || {}
+ 
+-function FilteredVector(state0, velocity0, t0) {
+-  this.dimension  = state0.length
+-  this.bounds     = [ new Array(this.dimension), new Array(this.dimension) ]
+-  for(var i=0; i<this.dimension; ++i) {
+-    this.bounds[0][i] = -Infinity
+-    this.bounds[1][i] = Infinity
++  var limits  = [ 0.01, Infinity ]
++  if('distanceLimits' in options) {
++    limits[0] = options.distanceLimits[0]
++    limits[1] = options.distanceLimits[1]
++  }
++  if('zoomMin' in options) {
++    limits[0] = options.zoomMin
++  }
++  if('zoomMax' in options) {
++    limits[1] = options.zoomMax
+   }
+-  this._state     = state0.slice().reverse()
+-  this._velocity  = velocity0.slice().reverse()
+-  this._time      = [ t0 ]
+-  this._scratch   = [ state0.slice(), state0.slice(), state0.slice(), state0.slice(), state0.slice() ]
+-}
+ 
+-var proto = FilteredVector.prototype
++  var view = createView({
++    center: options.center || [0,0,0],
++    up:     options.up     || [0,1,0],
++    eye:    options.eye    || [0,0,10],
++    mode:   options.mode   || 'orbit',
++    distanceLimits: limits
++  })
+ 
+-proto.flush = function(t) {
+-  var idx = bsearch.gt(this._time, t) - 1
+-  if(idx <= 0) {
+-    return
+-  }
+-  this._time.splice(0, idx)
+-  this._state.splice(0, idx * this.dimension)
+-  this._velocity.splice(0, idx * this.dimension)
+-}
++  var pmatrix = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
++  var distance = 0.0
++  var width   = element.clientWidth
++  var height  = element.clientHeight
+ 
+-proto.curve = function(t) {
+-  var time      = this._time
+-  var n         = time.length
+-  var idx       = bsearch.le(time, t)
+-  var result    = this._scratch[0]
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var d         = this.dimension
+-  var bounds    = this.bounds
+-  if(idx < 0) {
+-    var ptr = d-1
+-    for(var i=0; i<d; ++i, --ptr) {
+-      result[i] = state[ptr]
+-    }
+-  } else if(idx >= n-1) {
+-    var ptr = state.length-1
+-    var tf = t - time[n-1]
+-    for(var i=0; i<d; ++i, --ptr) {
+-      result[i] = state[ptr] + tf * velocity[ptr]
+-    }
+-  } else {
+-    var ptr = d * (idx+1) - 1
+-    var t0  = time[idx]
+-    var t1  = time[idx+1]
+-    var dt  = (t1 - t0) || 1.0
+-    var x0  = this._scratch[1]
+-    var x1  = this._scratch[2]
+-    var v0  = this._scratch[3]
+-    var v1  = this._scratch[4]
+-    var steady = true
+-    for(var i=0; i<d; ++i, --ptr) {
+-      x0[i] = state[ptr]
+-      v0[i] = velocity[ptr] * dt
+-      x1[i] = state[ptr+d]
+-      v1[i] = velocity[ptr+d] * dt
+-      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
+-    }
+-    if(steady) {
+-      for(var i=0; i<d; ++i) {
+-        result[i] = x0[i]
++  var camera = {
++    view:               view,
++    element:            element,
++    delay:              options.delay          || 16,
++    rotateSpeed:        options.rotateSpeed    || 1,
++    zoomSpeed:          options.zoomSpeed      || 1,
++    translateSpeed:     options.translateSpeed || 1,
++    flipX:              !!options.flipX,
++    flipY:              !!options.flipY,
++    modes:              view.modes,
++    tick: function() {
++      var t = now()
++      var delay = this.delay
++      view.idle(t-delay)
++      view.flush(t-(100+delay*2))
++      var ctime = t - 2 * delay
++      view.recalcMatrix(ctime)
++      var allEqual = true
++      var matrix = view.computedMatrix
++      for(var i=0; i<16; ++i) {
++        allEqual = allEqual && (pmatrix[i] === matrix[i])
++        pmatrix[i] = matrix[i]
+       }
+-    } else {
+-      cubicHermite(x0, v0, x1, v1, (t-t0)/dt, result)
++      var sizeChanged = 
++          element.clientWidth === width && 
++          element.clientHeight === height
++      width  = element.clientWidth
++      height = element.clientHeight
++      if(allEqual) {
++        return !sizeChanged
++      }
++      distance = Math.exp(view.computedRadius[0])
++      return true
++    },
++    lookAt: function(center, eye, up) {
++      view.lookAt(view.lastT(), center, eye, up)
++    },
++    rotate: function(pitch, yaw, roll) {
++      view.rotate(view.lastT(), pitch, yaw, roll)
++    },
++    pan: function(dx, dy, dz) {
++      view.pan(view.lastT(), dx, dy, dz)
++    },
++    translate: function(dx, dy, dz) {
++      view.translate(view.lastT(), dx, dy, dz)
+     }
+   }
+-  var lo = bounds[0]
+-  var hi = bounds[1]
+-  for(var i=0; i<d; ++i) {
+-    result[i] = clamp(lo[i], hi[i], result[i])
+-  }
+-  return result
+-}
+ 
+-proto.dcurve = function(t) {
+-  var time     = this._time
+-  var n        = time.length
+-  var idx      = bsearch.le(time, t)
+-  var result   = this._scratch[0]
+-  var state    = this._state
+-  var velocity = this._velocity
+-  var d        = this.dimension
+-  if(idx >= n-1) {
+-    var ptr = state.length-1
+-    var tf = t - time[n-1]
+-    for(var i=0; i<d; ++i, --ptr) {
+-      result[i] = velocity[ptr]
+-    }
+-  } else {
+-    var ptr = d * (idx+1) - 1
+-    var t0 = time[idx]
+-    var t1 = time[idx+1]
+-    var dt = (t1 - t0) || 1.0
+-    var x0 = this._scratch[1]
+-    var x1 = this._scratch[2]
+-    var v0 = this._scratch[3]
+-    var v1 = this._scratch[4]
+-    var steady = true
+-    for(var i=0; i<d; ++i, --ptr) {
+-      x0[i] = state[ptr]
+-      v0[i] = velocity[ptr] * dt
+-      x1[i] = state[ptr+d]
+-      v1[i] = velocity[ptr+d] * dt
+-      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
++  Object.defineProperties(camera, {
++    matrix: {
++      get: function() {
++        return view.computedMatrix
++      },
++      set: function(mat) {
++        view.setMatrix(view.lastT(), mat)
++        return view.computedMatrix
++      },
++      enumerable: true
++    },
++    mode: {
++      get: function() {
++        return view.getMode()
++      },
++      set: function(mode) {
++        view.setMode(mode)
++        return view.getMode()
++      },
++      enumerable: true
++    },
++    center: {
++      get: function() {
++        return view.computedCenter
++      },
++      set: function(ncenter) {
++        view.lookAt(view.lastT(), ncenter)
++        return view.computedCenter
++      },
++      enumerable: true
++    },
++    eye: {
++      get: function() {
++        return view.computedEye
++      },
++      set: function(neye) {
++        view.lookAt(view.lastT(), null, neye)
++        return view.computedEye
++      },
++      enumerable: true
++    },
++    up: {
++      get: function() {
++        return view.computedUp
++      },
++      set: function(nup) {
++        view.lookAt(view.lastT(), null, null, nup)
++        return view.computedUp
++      },
++      enumerable: true
++    },
++    distance: {
++      get: function() {
++        return distance
++      },
++      set: function(d) {
++        view.setDistance(view.lastT(), d)
++        return d
++      },
++      enumerable: true
++    },
++    distanceLimits: {
++      get: function() {
++        return view.getDistanceLimits(limits)
++      },
++      set: function(v) {
++        view.setDistanceLimits(v)
++        return v
++      },
++      enumerable: true
+     }
+-    if(steady) {
+-      for(var i=0; i<d; ++i) {
+-        result[i] = 0.0
+-      }
+-    } else {
+-      cubicHermite.derivative(x0, v0, x1, v1, (t-t0)/dt, result)
+-      for(var i=0; i<d; ++i) {
+-        result[i] /= dt
++  })
++  
++  element.addEventListener('contextmenu', function(ev) {
++    ev.preventDefault()
++    return false
++  })
++
++  var lastX = 0, lastY = 0
++  mouseChange(element, function(buttons, x, y, mods) {
++    var scale = 1.0 / element.clientHeight
++    var dx    = scale * (x - lastX)
++    var dy    = scale * (y - lastY)
++
++    var flipX = camera.flipX ? 1 : -1
++    var flipY = camera.flipY ? 1 : -1
++
++    var drot  = Math.PI * camera.rotateSpeed
++
++    var t = now()
++
++    if(buttons & 1) {
++      if(mods.shift) {
++        view.rotate(t, 0, 0, -dx * drot)
++      } else {
++        view.rotate(t, flipX * drot * dx, -flipY * drot * dy, 0)
+       }
++    } else if(buttons & 2) {
++      view.pan(t, -camera.translateSpeed * dx * distance, camera.translateSpeed * dy * distance, 0)
++    } else if(buttons & 4) {
++      var kzoom = camera.zoomSpeed * dy / window.innerHeight * (t - view.lastT()) * 50.0
++      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
+     }
+-  }
+-  return result
+-}
+ 
+-proto.lastT = function() {
+-  var time = this._time
+-  return time[time.length-1]
+-}
++    lastX = x
++    lastY = y
++  })
+ 
+-proto.stable = function() {
+-  var velocity = this._velocity
+-  var ptr = velocity.length
+-  for(var i=this.dimension-1; i>=0; --i) {
+-    if(velocity[--ptr]) {
+-      return false
++  mouseWheel(element, function(dx, dy, dz) {
++    var flipX = camera.flipX ? 1 : -1
++    var flipY = camera.flipY ? 1 : -1
++    var t = now()
++    if(Math.abs(dx) > Math.abs(dy)) {
++      view.rotate(t, 0, 0, -dx * flipX * Math.PI * camera.rotateSpeed / window.innerWidth)
++    } else {
++      var kzoom = camera.zoomSpeed * flipY * dy / window.innerHeight * (t - view.lastT()) / 100.0
++      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
+     }
+-  }
+-  return true
++  }, true)
++
++  return camera
+ }
++},{"3d-view":9,"mouse-change":177,"mouse-wheel":179,"right-now":213}],9:[function(require,module,exports){
++'use strict'
+ 
+-proto.jump = function(t) {
+-  var t0 = this.lastT()
+-  var d  = this.dimension
+-  if(t < t0 || arguments.length !== d+1) {
+-    return
+-  }
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var ptr       = state.length-this.dimension
+-  var bounds    = this.bounds
+-  var lo        = bounds[0]
+-  var hi        = bounds[1]
+-  this._time.push(t0, t)
+-  for(var j=0; j<2; ++j) {
+-    for(var i=0; i<d; ++i) {
+-      state.push(state[ptr++])
+-      velocity.push(0)
+-    }
+-  }
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
+-    velocity.push(0)
++module.exports = createViewController
++
++var createTurntable = require('turntable-camera-controller')
++var createOrbit     = require('orbit-camera-controller')
++var createMatrix    = require('matrix-camera-controller')
++
++function ViewController(controllers, mode) {
++  this._controllerNames = Object.keys(controllers)
++  this._controllerList = this._controllerNames.map(function(n) {
++    return controllers[n]
++  })
++  this._mode   = mode
++  this._active = controllers[mode]
++  if(!this._active) {
++    this._mode   = 'turntable'
++    this._active = controllers.turntable
+   }
++  this.modes = this._controllerNames
++  this.computedMatrix = this._active.computedMatrix
++  this.computedEye    = this._active.computedEye
++  this.computedUp     = this._active.computedUp
++  this.computedCenter = this._active.computedCenter
++  this.computedRadius = this._active.computedRadius
+ }
+ 
+-proto.push = function(t) {
+-  var t0 = this.lastT()
+-  var d  = this.dimension
+-  if(t < t0 || arguments.length !== d+1) {
+-    return
+-  }
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var ptr       = state.length-this.dimension
+-  var dt        = t - t0
+-  var bounds    = this.bounds
+-  var lo        = bounds[0]
+-  var hi        = bounds[1]
+-  var sf        = (dt > 1e-6) ? 1/dt : 0
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    var xc = clamp(lo[i-1], hi[i-1], arguments[i])
+-    state.push(xc)
+-    velocity.push((xc - state[ptr++]) * sf)
++var proto = ViewController.prototype
++
++var COMMON_METHODS = [
++  ['flush', 1],
++  ['idle', 1],
++  ['lookAt', 4],
++  ['rotate', 4],
++  ['pan', 4],
++  ['translate', 4],
++  ['setMatrix', 2],
++  ['setDistanceLimits', 2],
++  ['setDistance', 2]
++]
++
++COMMON_METHODS.forEach(function(method) {
++  var name = method[0]
++  var argNames = []
++  for(var i=0; i<method[1]; ++i) {
++    argNames.push('a'+i)
+   }
++  var code = 'var cc=this._controllerList;for(var i=0;i<cc.length;++i){cc[i].'+method[0]+'('+argNames.join()+')}'
++  proto[name] = Function.apply(null, argNames.concat(code))
++})
++
++proto.recalcMatrix = function(t) {
++  this._active.recalcMatrix(t)
+ }
+ 
+-proto.set = function(t) {
+-  var d = this.dimension
+-  if(t < this.lastT() || arguments.length !== d+1) {
+-    return
+-  }
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var bounds    = this.bounds
+-  var lo        = bounds[0]
+-  var hi        = bounds[1]
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
+-    velocity.push(0)
+-  }
++proto.getDistance = function(t) {
++  return this._active.getDistance(t)
++}
++proto.getDistanceLimits = function(out) {
++  return this._active.getDistanceLimits(out)
+ }
+ 
+-proto.move = function(t) {
+-  var t0 = this.lastT()
+-  var d  = this.dimension
+-  if(t <= t0 || arguments.length !== d+1) {
+-    return
+-  }
+-  var state    = this._state
+-  var velocity = this._velocity
+-  var statePtr = state.length - this.dimension
+-  var bounds   = this.bounds
+-  var lo       = bounds[0]
+-  var hi       = bounds[1]
+-  var dt       = t - t0
+-  var sf       = (dt > 1e-6) ? 1/dt : 0.0
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    var dx = arguments[i]
+-    state.push(clamp(lo[i-1], hi[i-1], state[statePtr++] + dx))
+-    velocity.push(dx * sf)
+-  }
++proto.lastT = function() {
++  return this._active.lastT()
+ }
+ 
+-proto.idle = function(t) {
+-  var t0 = this.lastT()
+-  if(t < t0) {
++proto.setMode = function(mode) {
++  if(mode === this._mode) {
+     return
+   }
+-  var d        = this.dimension
+-  var state    = this._state
+-  var velocity = this._velocity
+-  var statePtr = state.length-d
+-  var bounds   = this.bounds
+-  var lo       = bounds[0]
+-  var hi       = bounds[1]
+-  var dt       = t - t0
+-  this._time.push(t)
+-  for(var i=d-1; i>=0; --i) {
+-    state.push(clamp(lo[i], hi[i], state[statePtr] + dt * velocity[statePtr]))
+-    velocity.push(0)
+-    statePtr += 1
++  var idx = this._controllerNames.indexOf(mode)
++  if(idx < 0) {
++    return
+   }
++  var prev  = this._active
++  var next  = this._controllerList[idx]
++  var lastT = Math.max(prev.lastT(), next.lastT())
++
++  prev.recalcMatrix(lastT)
++  next.setMatrix(lastT, prev.computedMatrix)
++  
++  this._active = next
++  this._mode   = mode
++
++  //Update matrix properties
++  this.computedMatrix = this._active.computedMatrix
++  this.computedEye    = this._active.computedEye
++  this.computedUp     = this._active.computedUp
++  this.computedCenter = this._active.computedCenter
++  this.computedRadius = this._active.computedRadius
+ }
+ 
+-function getZero(d) {
+-  var result = new Array(d)
+-  for(var i=0; i<d; ++i) {
+-    result[i] = 0.0
+-  }
+-  return result
++proto.getMode = function() {
++  return this._mode
+ }
+ 
+-function createFilteredVector(initState, initVelocity, initTime) {
+-  switch(arguments.length) {
+-    case 0:
+-      return new FilteredVector([0], [0], 0)
+-    case 1:
+-      if(typeof initState === 'number') {
+-        var zero = getZero(initState)
+-        return new FilteredVector(zero, zero, 0)
+-      } else {
+-        return new FilteredVector(initState, getZero(initState.length), 0)
+-      }
+-    case 2:
+-      if(typeof initVelocity === 'number') {
+-        var zero = getZero(initState.length)
+-        return new FilteredVector(initState, zero, +initVelocity)
+-      } else {
+-        initTime = 0
+-      }
+-    case 3:
+-      if(initState.length !== initVelocity.length) {
+-        throw new Error('state and velocity lengths must match')
+-      }
+-      return new FilteredVector(initState, initVelocity, initTime)
+-  }
++function createViewController(options) {
++  options = options || {}
++
++  var eye       = options.eye    || [0,0,1]
++  var center    = options.center || [0,0,0]
++  var up        = options.up     || [0,1,0]
++  var limits    = options.distanceLimits || [0, Infinity]
++  var mode      = options.mode   || 'turntable'
++
++  var turntable = createTurntable()
++  var orbit     = createOrbit()
++  var matrix    = createMatrix()
++
++  turntable.setDistanceLimits(limits[0], limits[1])
++  turntable.lookAt(0, eye, center, up)
++  orbit.setDistanceLimits(limits[0], limits[1])
++  orbit.lookAt(0, eye, center, up)
++  matrix.setDistanceLimits(limits[0], limits[1])
++  matrix.lookAt(0, eye, center, up)
++
++  return new ViewController({
++    turntable: turntable,
++    orbit: orbit,
++    matrix: matrix
++  }, mode)
+ }
++},{"matrix-camera-controller":175,"orbit-camera-controller":195,"turntable-camera-controller":243}],10:[function(require,module,exports){
++'use strict'
+ 
+-},{"binary-search-bounds":9,"cubic-hermite":10}],9:[function(require,module,exports){
+-"use strict"
++var weakMap      = typeof WeakMap === 'undefined' ? require('weak-map') : WeakMap
++var createBuffer = require('gl-buffer')
++var createVAO    = require('gl-vao')
+ 
+-function compileSearch(funcName, predicate, reversed, extraArgs, useNdarray, earlyOut) {
+-  var code = [
+-    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
+-earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
+-";while(l<=h){\
+-var m=(l+h)>>>1,x=a", useNdarray ? ".get(m)" : "[m]"]
+-  if(earlyOut) {
+-    if(predicate.indexOf("c") < 0) {
+-      code.push(";if(x===y){return m}else if(x<=y){")
+-    } else {
+-      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
+-    }
+-  } else {
+-    code.push(";if(", predicate, "){i=m;")
+-  }
+-  if(reversed) {
+-    code.push("l=m+1}else{h=m-1}")
+-  } else {
+-    code.push("h=m-1}else{l=m+1}")
+-  }
+-  code.push("}")
+-  if(earlyOut) {
+-    code.push("return -1};")
+-  } else {
+-    code.push("return i};")
++var TriangleCache = new weakMap()
++
++function createABigTriangle(gl) {
++
++  var triangleVAO = TriangleCache.get(gl)
++  if(!triangleVAO || !gl.isBuffer(triangleVAO._triangleBuffer.buffer)) {
++    var buf = createBuffer(gl, new Float32Array([-1, -1, -1, 4, 4, -1]))
++    triangleVAO = createVAO(gl, [
++      { buffer: buf,
++        type: gl.FLOAT,
++        size: 2
++      }
++    ])
++    triangleVAO._triangleBuffer = buf
++    TriangleCache.set(gl, triangleVAO)
+   }
+-  return code.join("")
++  triangleVAO.bind()
++  gl.drawArrays(gl.TRIANGLES, 0, 3)
++  triangleVAO.unbind()
+ }
+ 
+-function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
+-  var result = new Function([
+-  compileSearch("A", "x" + predicate + "y", reversed, ["y"], false, earlyOut),
+-  compileSearch("B", "x" + predicate + "y", reversed, ["y"], true, earlyOut),
+-  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], false, earlyOut),
+-  compileSearch("Q", "c(x,y)" + predicate + "0", reversed, ["y", "c"], true, earlyOut),
+-"function dispatchBsearch", suffix, "(a,y,c,l,h){\
+-if(a.shape){\
+-if(typeof(c)==='function'){\
+-return Q(a,(l===undefined)?0:l|0,(h===undefined)?a.shape[0]-1:h|0,y,c)\
+-}else{\
+-return B(a,(c===undefined)?0:c|0,(l===undefined)?a.shape[0]-1:l|0,y)\
+-}}else{\
+-if(typeof(c)==='function'){\
+-return P(a,(l===undefined)?0:l|0,(h===undefined)?a.length-1:h|0,y,c)\
+-}else{\
+-return A(a,(c===undefined)?0:c|0,(l===undefined)?a.length-1:l|0,y)\
+-}}}\
+-return dispatchBsearch", suffix].join(""))
+-  return result()
+-}
++module.exports = createABigTriangle
+ 
+-module.exports = {
+-  ge: compileBoundsSearch(">=", false, "GE"),
+-  gt: compileBoundsSearch(">", false, "GT"),
+-  lt: compileBoundsSearch("<", true, "LT"),
+-  le: compileBoundsSearch("<=", true, "LE"),
+-  eq: compileBoundsSearch("-", true, "EQ", true)
++},{"gl-buffer":94,"gl-vao":148,"weak-map":251}],11:[function(require,module,exports){
++var padLeft = require('pad-left')
++
++module.exports = addLineNumbers
++function addLineNumbers (string, start, delim) {
++  start = typeof start === 'number' ? start : 1
++  delim = delim || ': '
++
++  var lines = string.split(/\r?\n/)
++  var totalDigits = String(lines.length + start - 1).length
++  return lines.map(function (line, i) {
++    var c = i + start
++    var digits = String(c).length
++    var prefix = padLeft(c, totalDigits - digits)
++    return prefix + delim + line
++  }).join('\n')
+ }
+ 
+-},{}],10:[function(require,module,exports){
+-"use strict"
++},{"pad-left":196}],12:[function(require,module,exports){
++'use strict'
+ 
+-function dcubicHermite(p0, v0, p1, v1, t, f) {
+-  var dh00 = 6*t*t-6*t,
+-      dh10 = 3*t*t-4*t + 1,
+-      dh01 = -6*t*t+6*t,
+-      dh11 = 3*t*t-2*t
+-  if(p0.length) {
+-    if(!f) {
+-      f = new Array(p0.length)
++module.exports = affineHull
++
++var orient = require('robust-orientation')
++
++function linearlyIndependent(points, d) {
++  var nhull = new Array(d+1)
++  for(var i=0; i<points.length; ++i) {
++    nhull[i] = points[i]
++  }
++  for(var i=0; i<=points.length; ++i) {
++    for(var j=points.length; j<=d; ++j) {
++      var x = new Array(d)
++      for(var k=0; k<d; ++k) {
++        x[k] = Math.pow(j+1-i, k)
++      }
++      nhull[j] = x
+     }
+-    for(var i=p0.length-1; i>=0; --i) {
+-      f[i] = dh00*p0[i] + dh10*v0[i] + dh01*p1[i] + dh11*v1[i]
++    var o = orient.apply(void 0, nhull)
++    if(o) {
++      return true
+     }
+-    return f
+   }
+-  return dh00*p0 + dh10*v0 + dh01*p1[i] + dh11*v1
++  return false
+ }
+ 
+-function cubicHermite(p0, v0, p1, v1, t, f) {
+-  var ti  = (t-1), t2 = t*t, ti2 = ti*ti,
+-      h00 = (1+2*t)*ti2,
+-      h10 = t*ti2,
+-      h01 = t2*(3-2*t),
+-      h11 = t2*ti
+-  if(p0.length) {
+-    if(!f) {
+-      f = new Array(p0.length)
++function affineHull(points) {
++  var n = points.length
++  if(n === 0) {
++    return []
++  }
++  if(n === 1) {
++    return [0]
++  }
++  var d = points[0].length
++  var frame = [ points[0] ]
++  var index = [ 0 ]
++  for(var i=1; i<n; ++i) {
++    frame.push(points[i])
++    if(!linearlyIndependent(frame, d)) {
++      frame.pop()
++      continue
+     }
+-    for(var i=p0.length-1; i>=0; --i) {
+-      f[i] = h00*p0[i] + h10*v0[i] + h01*p1[i] + h11*v1[i]
++    index.push(i)
++    if(index.length === d+1) {
++      return index
+     }
+-    return f
+   }
+-  return h00*p0 + h10*v0 + h01*p1 + h11*v1
++  return index
+ }
++},{"robust-orientation":219}],13:[function(require,module,exports){
++'use strict'
+ 
+-module.exports = cubicHermite
+-module.exports.derivative = dcubicHermite
+-},{}],11:[function(require,module,exports){
+-module.exports = cross;
+-
+-/**
+- * Computes the cross product of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-function cross(out, a, b) {
+-    var ax = a[0], ay = a[1], az = a[2],
+-        bx = b[0], by = b[1], bz = b[2]
++module.exports = alphaComplex
+ 
+-    out[0] = ay * bz - az * by
+-    out[1] = az * bx - ax * bz
+-    out[2] = ax * by - ay * bx
+-    return out
+-}
+-},{}],12:[function(require,module,exports){
+-module.exports = dot;
++var delaunay = require('delaunay-triangulate')
++var circumradius = require('circumradius')
+ 
+-/**
+- * Calculates the dot product of two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-function dot(a, b) {
+-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]
++function alphaComplex(alpha, points) {
++  return delaunay(points).filter(function(cell) {
++    var simplex = new Array(cell.length)
++    for(var i=0; i<cell.length; ++i) {
++      simplex[i] = points[cell[i]]
++    }
++    return circumradius(simplex) * alpha < 1
++  })
+ }
+-},{}],13:[function(require,module,exports){
+-module.exports = length;
++},{"circumradius":56,"delaunay-triangulate":75}],14:[function(require,module,exports){
++module.exports = alphaShape
+ 
+-/**
+- * Calculates the length of a vec3
+- *
+- * @param {vec3} a vector to calculate length of
+- * @returns {Number} length of a
+- */
+-function length(a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2]
+-    return Math.sqrt(x*x + y*y + z*z)
+-}
+-},{}],14:[function(require,module,exports){
+-module.exports = lerp;
++var ac = require('alpha-complex')
++var bnd = require('simplicial-complex-boundary')
+ 
+-/**
+- * Performs a linear interpolation between two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
+- */
+-function lerp(out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1],
+-        az = a[2]
+-    out[0] = ax + t * (b[0] - ax)
+-    out[1] = ay + t * (b[1] - ay)
+-    out[2] = az + t * (b[2] - az)
+-    return out
++function alphaShape(alpha, points) {
++  return bnd(ac(alpha, points))
+ }
+-},{}],15:[function(require,module,exports){
+-module.exports = normalize;
++},{"alpha-complex":13,"simplicial-complex-boundary":226}],15:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Normalize a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to normalize
+- * @returns {vec3} out
+- */
+-function normalize(out, a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2]
+-    var len = x*x + y*y + z*z
+-    if (len > 0) {
+-        //TODO: evaluate use of glm_invsqrt here?
+-        len = 1 / Math.sqrt(len)
+-        out[0] = a[0] * len
+-        out[1] = a[1] * len
+-        out[2] = a[2] * len
+-    }
+-    return out
+-}
+-},{}],16:[function(require,module,exports){
+-'use strict'
++var arraytools  = function () {
+ 
+-var bsearch   = require('binary-search-bounds')
+-var m4interp  = require('mat4-interpolate')
+-var invert44  = require('gl-mat4/invert')
+-var rotateX   = require('gl-mat4/rotateX')
+-var rotateY   = require('gl-mat4/rotateY')
+-var rotateZ   = require('gl-mat4/rotateZ')
+-var lookAt    = require('gl-mat4/lookAt')
+-var translate = require('gl-mat4/translate')
+-var scale     = require('gl-mat4/scale')
+-var normalize = require('gl-vec3/normalize')
++  var that = {};
+ 
+-var DEFAULT_CENTER = [0,0,0]
++  var RGB_REGEX =  /^rgba?\(\s*\d{1,3}\s*,\s*\d{1,3}\s*,\s*\d{1,3}\s*(,.*)?\)$/;
++  var RGB_GROUP_REGEX = /^rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,?\s*(.*)?\)$/;
+ 
+-module.exports = createMatrixCameraController
++  function isPlainObject (v) {
++    return !Array.isArray(v) && v !== null && typeof v === 'object';
++  }
+ 
+-function MatrixCameraController(initialMatrix) {
+-  this._components    = initialMatrix.slice()
+-  this._time          = [0]
+-  this.prevMatrix     = initialMatrix.slice()
+-  this.nextMatrix     = initialMatrix.slice()
+-  this.computedMatrix = initialMatrix.slice()
+-  this.computedInverse = initialMatrix.slice()
+-  this.computedEye    = [0,0,0]
+-  this.computedUp     = [0,0,0]
+-  this.computedCenter = [0,0,0]
+-  this.computedRadius = [0]
+-  this._limits        = [-Infinity, Infinity]
+-}
++  function linspace (start, end, num) {
++    var inc = (end - start) / Math.max(num - 1, 1);
++    var a = [];
++    for( var ii = 0; ii < num; ii++)
++      a.push(start + ii*inc);
++    return a;
++  }
+ 
+-var proto = MatrixCameraController.prototype
++  function zip () {
++      var arrays = [].slice.call(arguments);
++      var lengths = arrays.map(function (a) {return a.length;});
++      var len = Math.min.apply(null, lengths);
++      var zipped = [];
++      for (var i = 0; i < len; i++) {
++          zipped[i] = [];
++          for (var j = 0; j < arrays.length; ++j) {
++              zipped[i][j] = arrays[j][i];
++          }
++      }
++      return zipped;
++  }
+ 
+-proto.recalcMatrix = function(t) {
+-  var time = this._time
+-  var tidx = bsearch.le(time, t)
+-  var mat = this.computedMatrix
+-  if(tidx < 0) {
+-    return
++  function zip3 (a, b, c) {
++      var len = Math.min.apply(null, [a.length, b.length, c.length]);
++      var result = [];
++      for (var n = 0; n < len; n++) {
++          result.push([a[n], b[n], c[n]]);
++      }
++      return result;
+   }
+-  var comps = this._components
+-  if(tidx === time.length-1) {
+-    var ptr = 16*tidx
+-    for(var i=0; i<16; ++i) {
+-      mat[i] = comps[ptr++]
+-    }
+-  } else {
+-    var dt = (time[tidx+1] - time[tidx])
+-    var ptr = 16*tidx
+-    var prev = this.prevMatrix
+-    var allEqual = true
+-    for(var i=0; i<16; ++i) {
+-      prev[i] = comps[ptr++]
+-    }
+-    var next = this.nextMatrix
+-    for(var i=0; i<16; ++i) {
+-      next[i] = comps[ptr++]
+-      allEqual = allEqual && (prev[i] === next[i])
+-    }
+-    if(dt < 1e-6 || allEqual) {
+-      for(var i=0; i<16; ++i) {
+-        mat[i] = prev[i]
++
++  function sum (A) {
++    var acc = 0;
++    accumulate(A, acc);
++    function accumulate(x) {
++      for (var i = 0; i < x.length; i++) {
++        if (Array.isArray(x[i]))
++          accumulate(x[i], acc);
++        else
++          acc += x[i];
+       }
+-    } else {
+-      m4interp(mat, prev, next, (t - time[tidx])/dt)
+     }
++    return acc;
+   }
+ 
+-  var up = this.computedUp
+-  up[0] = mat[1]
+-  up[1] = mat[5]
+-  up[2] = mat[6]
+-  normalize(up, up)
+-
+-  var imat = this.computedInverse
+-  invert44(imat, mat)
+-  var eye = this.computedEye
+-  var w = imat[15]
+-  eye[0] = imat[12]/w
+-  eye[1] = imat[13]/w
+-  eye[2] = imat[14]/w
++  function copy2D (arr) {
++    var carr = [];
++    for (var i = 0; i < arr.length; ++i) {
++      carr[i] = [];
++      for (var j = 0; j < arr[i].length; ++j) {
++        carr[i][j] = arr[i][j];
++      }
++    }
+ 
+-  var center = this.computedCenter
+-  var radius = Math.exp(this.computedRadius[0])
+-  for(var i=0; i<3; ++i) {
+-    center[i] = eye[i] - mat[2+4*i] * radius
++    return carr;
+   }
+-}
+ 
+-proto.idle = function(t) {
+-  if(t < this.lastT()) {
+-    return
+-  }
+-  var mc = this._components
+-  var ptr = mc.length-16
+-  for(var i=0; i<16; ++i) {
+-    mc.push(mc[ptr++])
+-  }
+-  this._time.push(t)
+-}
+ 
+-proto.flush = function(t) {
+-  var idx = bsearch.gt(this._time, t) - 2
+-  if(idx < 0) {
+-    return
++  function copy1D (arr) {
++    var carr = [];
++    for (var i = 0; i < arr.length; ++i) {
++      carr[i] = arr[i];
++    }
++
++    return carr;
+   }
+-  this._time.slice(0, idx)
+-  this._components.slice(0, 16*idx)
+-}
+ 
+-proto.lastT = function() {
+-  return this._time[this._time.length-1]
+-}
+ 
+-proto.lookAt = function(t, eye, center, up) {
+-  this.recalcMatrix(t)
+-  eye    = eye || this.computedEye
+-  center = center || DEFAULT_CENTER
+-  up     = up || this.computedUp
+-  this.setMatrix(t, lookAt(this.computedMatrix, eye, center, up))
+-  var d2 = 0.0
+-  for(var i=0; i<3; ++i) {
+-    d2 += Math.pow(center[i] - eye[i], 2)
++  function isEqual(arr1, arr2) {
++    if(arr1.length !== arr2.length)
++      return false;
++    for(var i = arr1.length; i--;) {
++      if(arr1[i] !== arr2[i])
++        return false;
++    }
++
++    return true;
+   }
+-  d2 = Math.log(Math.sqrt(d2))
+-  this.computedRadius[0] = d2
+-}
+ 
+-proto.rotate = function(t, yaw, pitch, roll) {
+-  this.recalcMatrix(t)
+-  var mat = this.computedInverse
+-  if(yaw)   rotateY(mat, mat, yaw)
+-  if(pitch) rotateX(mat, mat, pitch)
+-  if(roll)  rotateZ(mat, mat, roll)
+-  this.setMatrix(t, invert44(this.computedMatrix, mat))
+-}
+ 
+-var tvec = [0,0,0]
++  function str2RgbArray(str, twoFiftySix) {
++    // convert hex or rbg strings to 0->1 or 0->255 rgb array
++    var rgb,
++        match;
+ 
+-proto.pan = function(t, dx, dy, dz) {
+-  tvec[0] = -(dx || 0.0)
+-  tvec[1] = -(dy || 0.0)
+-  tvec[2] = -(dz || 0.0)
+-  this.recalcMatrix(t)
+-  var mat = this.computedInverse
+-  translate(mat, mat, tvec)
+-  this.setMatrix(t, invert44(mat, mat))
+-}
++    if (typeof str !== 'string') return str;
+ 
+-proto.translate = function(t, dx, dy, dz) {
+-  tvec[0] = dx || 0.0
+-  tvec[1] = dy || 0.0
+-  tvec[2] = dz || 0.0
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
+-  translate(mat, mat, tvec)
+-  this.setMatrix(t, mat)
+-}
++    rgb = [];
++    // hex notation
++    if (str[0] === '#') {
++      str = str.substr(1) // remove hash
++      if (str.length === 3) str += str // fff -> ffffff
++      match = parseInt(str, 16);
++      rgb[0] = ((match >> 16) & 255);
++      rgb[1] = ((match >> 8) & 255);
++      rgb[2] = (match & 255);
++    }
+ 
+-proto.setMatrix = function(t, mat) {
+-  if(t < this.lastT()) {
+-    return
+-  }
+-  this._time.push(t)
+-  for(var i=0; i<16; ++i) {
+-    this._components.push(mat[i])
+-  }
+-}
++    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
++    else if (RGB_REGEX.test(str)) {
++      match = str.match(RGB_GROUP_REGEX);
++      rgb[0] = parseInt(match[1]);
++      rgb[1] = parseInt(match[2]);
++      rgb[2] = parseInt(match[3]);
++    }
+ 
+-proto.setDistance = function(t, d) {
+-  this.computedRadius[0] = d
+-}
++    if (!twoFiftySix) {
++      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
++    }
+ 
+-proto.setDistanceLimits = function(a,b) {
+-  var lim = this._limits
+-  lim[0] = a
+-  lim[1] = b
+-}
+ 
+-proto.getDistanceLimits = function(out) {
+-  var lim = this._limits
+-  if(out) {
+-    out[0] = lim[0]
+-    out[1] = lim[1]
+-    return out
++    return rgb;
+   }
+-  return lim
+-}
+-
+-function createMatrixCameraController(options) {
+-  options = options || {}
+-  var matrix = options.matrix || 
+-              [1,0,0,0,
+-               0,1,0,0,
+-               0,0,1,0,
+-               0,0,0,1]
+-  return new MatrixCameraController(matrix)
+-}
+-},{"binary-search-bounds":17,"gl-mat4/invert":120,"gl-mat4/lookAt":121,"gl-mat4/rotateX":125,"gl-mat4/rotateY":126,"gl-mat4/rotateZ":127,"gl-mat4/scale":128,"gl-mat4/translate":129,"gl-vec3/normalize":15,"mat4-interpolate":18}],17:[function(require,module,exports){
+-arguments[4][9][0].apply(exports,arguments)
+-},{"dup":9}],18:[function(require,module,exports){
+-var lerp = require('gl-vec3/lerp')
+ 
+-var recompose = require('mat4-recompose')
+-var decompose = require('mat4-decompose')
+-var determinant = require('gl-mat4/determinant')
+-var slerp = require('quat-slerp')
+ 
+-var state0 = state()
+-var state1 = state()
+-var tmp = state()
++  function str2RgbaArray(str, twoFiftySix) {
++    // convert hex or rbg strings to 0->1 or 0->255 rgb array
++    var rgb,
++        match;
+ 
+-module.exports = interpolate
+-function interpolate(out, start, end, alpha) {
+-    if (determinant(start) === 0 || determinant(end) === 0)
+-        return false
++    if (typeof str !== 'string') return str;
+ 
+-    //decompose the start and end matrices into individual components
+-    var r0 = decompose(start, state0.translate, state0.scale, state0.skew, state0.perspective, state0.quaternion)
+-    var r1 = decompose(end, state1.translate, state1.scale, state1.skew, state1.perspective, state1.quaternion)
+-    if (!r0 || !r1)
+-        return false    
++    rgb = [];
++    // hex notation
++    if (str[0] === '#') {
++      str = str.substr(1) // remove hash
++      if (str.length === 3) str += str // fff -> ffffff
++      match = parseInt(str, 16);
++      rgb[0] = ((match >> 16) & 255);
++      rgb[1] = ((match >> 8) & 255);
++      rgb[2] = (match & 255);
++    }
+ 
++    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
++    else if (RGB_REGEX.test(str)) {
++      match = str.match(RGB_GROUP_REGEX);
++      rgb[0] = parseInt(match[1]);
++      rgb[1] = parseInt(match[2]);
++      rgb[2] = parseInt(match[3]);
++      if (match[4]) rgb[3] = parseFloat(match[4]);
++      else rgb[3] = 1.0;
++    }
+ 
+-    //now lerp/slerp the start and end components into a temporary     lerp(tmptranslate, state0.translate, state1.translate, alpha)
+-    lerp(tmp.translate, state0.translate, state1.translate, alpha)
+-    lerp(tmp.skew, state0.skew, state1.skew, alpha)
+-    lerp(tmp.scale, state0.scale, state1.scale, alpha)
+-    lerp(tmp.perspective, state0.perspective, state1.perspective, alpha)
+-    slerp(tmp.quaternion, state0.quaternion, state1.quaternion, alpha)
+ 
+-    //and recompose into our 'out' matrix
+-    recompose(out, tmp.translate, tmp.scale, tmp.skew, tmp.perspective, tmp.quaternion)
+-    return true
+-}
+ 
+-function state() {
+-    return {
+-        translate: vec3(),
+-        scale: vec3(1),
+-        skew: vec3(),
+-        perspective: vec4(),
+-        quaternion: vec4()
++    if (!twoFiftySix) {
++      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
+     }
+-}
+ 
+-function vec3(n) {
+-    return [n||0,n||0,n||0]
+-}
+ 
+-function vec4() {
+-    return [0,0,0,1]
+-}
+-},{"gl-mat4/determinant":116,"gl-vec3/lerp":14,"mat4-decompose":19,"mat4-recompose":21,"quat-slerp":22}],19:[function(require,module,exports){
+-/*jshint unused:true*/
+-/*
+-Input:  matrix      ; a 4x4 matrix
+-Output: translation ; a 3 component vector
+-        scale       ; a 3 component vector
+-        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
+-        perspective ; a 4 component vector
+-        quaternion  ; a 4 component vector
+-Returns false if the matrix cannot be decomposed, true if it can
++    return rgb;
++  }
+ 
+ 
+-References:
+-https://github.com/kamicane/matrix3d/blob/master/lib/Matrix3d.js
+-https://github.com/ChromiumWebApps/chromium/blob/master/ui/gfx/transform_util.cc
+-http://www.w3.org/TR/css3-transforms/#decomposing-a-3d-matrix
+-*/
+ 
+-var normalize = require('./normalize')
+ 
+-var create = require('gl-mat4/create')
+-var clone = require('gl-mat4/clone')
+-var determinant = require('gl-mat4/determinant')
+-var invert = require('gl-mat4/invert')
+-var transpose = require('gl-mat4/transpose')
+-var vec3 = {
+-    length: require('gl-vec3/length'),
+-    normalize: require('gl-vec3/normalize'),
+-    dot: require('gl-vec3/dot'),
+-    cross: require('gl-vec3/cross')
+-}
+ 
+-var tmp = create()
+-var perspectiveMatrix = create()
+-var tmpVec4 = [0, 0, 0, 0]
+-var row = [ [0,0,0], [0,0,0], [0,0,0] ]
+-var pdum3 = [0,0,0]
++  that.isPlainObject = isPlainObject;
++  that.linspace = linspace;
++  that.zip3 = zip3;
++  that.sum = sum;
++  that.zip = zip;
++  that.isEqual = isEqual;
++  that.copy2D = copy2D;
++  that.copy1D = copy1D;
++  that.str2RgbArray = str2RgbArray;
++  that.str2RgbaArray = str2RgbaArray;
+ 
+-module.exports = function decomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
+-    if (!translation) translation = [0,0,0]
+-    if (!scale) scale = [0,0,0]
+-    if (!skew) skew = [0,0,0]
+-    if (!perspective) perspective = [0,0,0,1]
+-    if (!quaternion) quaternion = [0,0,0,1]
++  return that
+ 
+-    //normalize, if not possible then bail out early
+-    if (!normalize(tmp, matrix))
+-        return false
++}
+ 
+-    // perspectiveMatrix is used to solve for perspective, but it also provides
+-    // an easy way to test for singularity of the upper 3x3 component.
+-    clone(perspectiveMatrix, tmp)
+ 
+-    perspectiveMatrix[3] = 0
+-    perspectiveMatrix[7] = 0
+-    perspectiveMatrix[11] = 0
+-    perspectiveMatrix[15] = 1
++module.exports = arraytools();
+ 
+-    // If the perspectiveMatrix is not invertible, we are also unable to
+-    // decompose, so we'll bail early. Constant taken from SkMatrix44::invert.
+-    if (Math.abs(determinant(perspectiveMatrix) < 1e-8))
+-        return false
++},{}],16:[function(require,module,exports){
++module.exports = function _atob(str) {
++  return atob(str)
++}
+ 
+-    var a03 = tmp[3], a13 = tmp[7], a23 = tmp[11],
+-            a30 = tmp[12], a31 = tmp[13], a32 = tmp[14], a33 = tmp[15]
++},{}],17:[function(require,module,exports){
++'use strict'
+ 
+-    // First, isolate perspective.
+-    if (a03 !== 0 || a13 !== 0 || a23 !== 0) {
+-        tmpVec4[0] = a03
+-        tmpVec4[1] = a13
+-        tmpVec4[2] = a23
+-        tmpVec4[3] = a33
++module.exports = barycentric
+ 
+-        // Solve the equation by inverting perspectiveMatrix and multiplying
+-        // rightHandSide by the inverse.
+-        // resuing the perspectiveMatrix here since it's no longer needed
+-        var ret = invert(perspectiveMatrix, perspectiveMatrix)
+-        if (!ret) return false
+-        transpose(perspectiveMatrix, perspectiveMatrix)
++var solve = require('robust-linear-solve')
+ 
+-        //multiply by transposed inverse perspective matrix, into perspective vec4
+-        vec4multMat4(perspective, tmpVec4, perspectiveMatrix)
+-    } else { 
+-        //no perspective
+-        perspective[0] = perspective[1] = perspective[2] = 0
+-        perspective[3] = 1
++function reduce(x) {
++  var r = 0
++  for(var i=0; i<x.length; ++i) {
++    r += x[i]
++  }
++  return r
++}
++
++function barycentric(simplex, point) {
++  var d = point.length
++  var A = new Array(d+1)
++  for(var i=0; i<d; ++i) {
++    var row = new Array(d+1)
++    for(var j=0; j<=d; ++j) {
++      row[j] = simplex[j][i]
+     }
++    A[i] = row
++  }
++  A[d] = new Array(d+1)
++  for(var i=0; i<=d; ++i) {
++    A[d][i] = 1
++  }
+ 
+-    // Next take care of translation
+-    translation[0] = a30
+-    translation[1] = a31
+-    translation[2] = a32
++  var b = new Array(d+1)
++  for(var i=0; i<d; ++i) {
++    b[i] = point[i]
++  }
++  b[d] = 1.0
+ 
+-    // Now get scale and shear. 'row' is a 3 element array of 3 component vectors
+-    mat3from4(row, tmp)
++  var x = solve(A, b)
++  var w = reduce(x[d+1])
++  
++  if(w === 0) {
++    w = 1.0
++  }
++  var y = new Array(d+1)
++  for(var i=0; i<=d; ++i) {
++    y[i] = reduce(x[i]) / w
++  }
++  return y
++}
++},{"robust-linear-solve":218}],18:[function(require,module,exports){
++'use strict'
+ 
+-    // Compute X scale factor and normalize first row.
+-    scale[0] = vec3.length(row[0])
+-    vec3.normalize(row[0], row[0])
++var rationalize = require('./lib/rationalize')
+ 
+-    // Compute XY shear factor and make 2nd row orthogonal to 1st.
+-    skew[0] = vec3.dot(row[0], row[1])
+-    combine(row[1], row[1], row[0], 1.0, -skew[0])
++module.exports = add
+ 
+-    // Now, compute Y scale and normalize 2nd row.
+-    scale[1] = vec3.length(row[1])
+-    vec3.normalize(row[1], row[1])
+-    skew[0] /= scale[1]
++function add(a, b) {
++  return rationalize(
++    a[0].mul(b[1]).add(b[0].mul(a[1])),
++    a[1].mul(b[1]))
++}
+ 
+-    // Compute XZ and YZ shears, orthogonalize 3rd row
+-    skew[1] = vec3.dot(row[0], row[2])
+-    combine(row[2], row[2], row[0], 1.0, -skew[1])
+-    skew[2] = vec3.dot(row[1], row[2])
+-    combine(row[2], row[2], row[1], 1.0, -skew[2])
++},{"./lib/rationalize":28}],19:[function(require,module,exports){
++'use strict'
+ 
+-    // Next, get Z scale and normalize 3rd row.
+-    scale[2] = vec3.length(row[2])
+-    vec3.normalize(row[2], row[2])
+-    skew[1] /= scale[2]
+-    skew[2] /= scale[2]
++module.exports = cmp
+ 
++function cmp(a, b) {
++    return a[0].mul(b[1]).cmp(b[0].mul(a[1]))
++}
+ 
+-    // At this point, the matrix (in rows) is orthonormal.
+-    // Check for a coordinate system flip.  If the determinant
+-    // is -1, then negate the matrix and the scaling factors.
+-    vec3.cross(pdum3, row[1], row[2])
+-    if (vec3.dot(row[0], pdum3) < 0) {
+-        for (var i = 0; i < 3; i++) {
+-            scale[i] *= -1;
+-            row[i][0] *= -1
+-            row[i][1] *= -1
+-            row[i][2] *= -1
+-        }
+-    }
++},{}],20:[function(require,module,exports){
++'use strict'
+ 
+-    // Now, get the rotations out
+-    quaternion[0] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] - row[1][1] - row[2][2], 0))
+-    quaternion[1] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] + row[1][1] - row[2][2], 0))
+-    quaternion[2] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] - row[1][1] + row[2][2], 0))
+-    quaternion[3] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] + row[1][1] + row[2][2], 0))
++var rationalize = require('./lib/rationalize')
+ 
+-    if (row[2][1] > row[1][2])
+-        quaternion[0] = -quaternion[0]
+-    if (row[0][2] > row[2][0])
+-        quaternion[1] = -quaternion[1]
+-    if (row[1][0] > row[0][1])
+-        quaternion[2] = -quaternion[2]
+-    return true
+-}
++module.exports = div
+ 
+-//will be replaced by gl-vec4 eventually
+-function vec4multMat4(out, a, m) {
+-    var x = a[0], y = a[1], z = a[2], w = a[3];
+-    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
+-    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
+-    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
+-    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
+-    return out;
++function div(a, b) {
++  return rationalize(a[0].mul(b[1]), a[1].mul(b[0]))
+ }
+ 
+-//gets upper-left of a 4x4 matrix into a 3x3 of vectors
+-function mat3from4(out, mat4x4) {
+-    out[0][0] = mat4x4[0]
+-    out[0][1] = mat4x4[1]
+-    out[0][2] = mat4x4[2]
+-    
+-    out[1][0] = mat4x4[4]
+-    out[1][1] = mat4x4[5]
+-    out[1][2] = mat4x4[6]
++},{"./lib/rationalize":28}],21:[function(require,module,exports){
++'use strict'
+ 
+-    out[2][0] = mat4x4[8]
+-    out[2][1] = mat4x4[9]
+-    out[2][2] = mat4x4[10]
+-}
++var isRat = require('./is-rat')
++var isBN = require('./lib/is-bn')
++var num2bn = require('./lib/num-to-bn')
++var str2bn = require('./lib/str-to-bn')
++var rationalize = require('./lib/rationalize')
++var div = require('./div')
+ 
+-function combine(out, a, b, scale1, scale2) {
+-    out[0] = a[0] * scale1 + b[0] * scale2
+-    out[1] = a[1] * scale1 + b[1] * scale2
+-    out[2] = a[2] * scale1 + b[2] * scale2
+-}
+-},{"./normalize":20,"gl-mat4/clone":114,"gl-mat4/create":115,"gl-mat4/determinant":116,"gl-mat4/invert":120,"gl-mat4/transpose":130,"gl-vec3/cross":11,"gl-vec3/dot":12,"gl-vec3/length":13,"gl-vec3/normalize":15}],20:[function(require,module,exports){
+-module.exports = function normalize(out, mat) {
+-    var m44 = mat[15]
+-    // Cannot normalize.
+-    if (m44 === 0) 
+-        return false
+-    var scale = 1 / m44
+-    for (var i=0; i<16; i++)
+-        out[i] = mat[i] * scale
+-    return true
++module.exports = makeRational
++
++function makeRational(numer, denom) {
++  if(isRat(numer)) {
++    if(denom) {
++      return div(numer, makeRational(denom))
++    }
++    return [numer[0].clone(), numer[1].clone()]
++  }
++  var shift = 0
++  var a, b
++  if(isBN(numer)) {
++    a = numer.clone()
++  } else if(typeof numer === 'string') {
++    a = str2bn(numer)
++  } else if(numer === 0) {
++    return [num2bn(0), num2bn(1)]
++  } else if(numer === Math.floor(numer)) {
++    a = num2bn(numer)
++  } else {
++    while(numer !== Math.floor(numer)) {
++      numer = numer * Math.pow(2, 256)
++      shift -= 256
++    }
++    a = num2bn(numer)
++  }
++  if(isRat(denom)) {
++    a.mul(denom[1])
++    b = denom[0].clone()
++  } else if(isBN(denom)) {
++    b = denom.clone()
++  } else if(typeof denom === 'string') {
++    b = str2bn(denom)
++  } else if(!denom) {
++    b = num2bn(1)
++  } else if(denom === Math.floor(denom)) {
++    b = num2bn(denom)
++  } else {
++    while(denom !== Math.floor(denom)) {
++      denom = denom * Math.pow(2, 256)
++      shift += 256
++    }
++    b = num2bn(denom)
++  }
++  if(shift > 0) {
++    a = a.shln(shift)
++  } else if(shift < 0) {
++    b = b.shln(-shift)
++  }
++  return rationalize(a, b)
+ }
+-},{}],21:[function(require,module,exports){
+-/*
+-Input:  translation ; a 3 component vector
+-        scale       ; a 3 component vector
+-        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
+-        perspective ; a 4 component vector
+-        quaternion  ; a 4 component vector
+-Output: matrix      ; a 4x4 matrix
+ 
+-From: http://www.w3.org/TR/css3-transforms/#recomposing-to-a-3d-matrix
+-*/
++},{"./div":20,"./is-rat":22,"./lib/is-bn":26,"./lib/num-to-bn":27,"./lib/rationalize":28,"./lib/str-to-bn":29}],22:[function(require,module,exports){
++'use strict'
+ 
+-var mat4 = {
+-    identity: require('gl-mat4/identity'),
+-    translate: require('gl-mat4/translate'),
+-    multiply: require('gl-mat4/multiply'),
+-    create: require('gl-mat4/create'),
+-    scale: require('gl-mat4/scale'),
+-    fromRotationTranslation: require('gl-mat4/fromRotationTranslation')
++var isBN = require('./lib/is-bn')
++
++module.exports = isRat
++
++function isRat(x) {
++  return Array.isArray(x) && x.length === 2 && isBN(x[0]) && isBN(x[1])
+ }
+ 
+-var rotationMatrix = mat4.create()
+-var temp = mat4.create()
++},{"./lib/is-bn":26}],23:[function(require,module,exports){
++'use strict'
+ 
+-module.exports = function recomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
+-    mat4.identity(matrix)
++var bn = require('bn.js')
+ 
+-    //apply translation & rotation
+-    mat4.fromRotationTranslation(matrix, quaternion, translation)
++module.exports = sign
+ 
+-    //apply perspective
+-    matrix[3] = perspective[0]
+-    matrix[7] = perspective[1]
+-    matrix[11] = perspective[2]
+-    matrix[15] = perspective[3]
+-        
+-    // apply skew
+-    // temp is a identity 4x4 matrix initially
+-    mat4.identity(temp)
++function sign(x) {
++  return x.cmp(new bn(0))
++}
+ 
+-    if (skew[2] !== 0) {
+-        temp[9] = skew[2]
+-        mat4.multiply(matrix, matrix, temp)
+-    }
++},{"bn.js":36}],24:[function(require,module,exports){
++'use strict'
+ 
+-    if (skew[1] !== 0) {
+-        temp[9] = 0
+-        temp[8] = skew[1]
+-        mat4.multiply(matrix, matrix, temp)
+-    }
++module.exports = bn2num
+ 
+-    if (skew[0] !== 0) {
+-        temp[8] = 0
+-        temp[4] = skew[0]
+-        mat4.multiply(matrix, matrix, temp)
++//TODO: Make this better
++function bn2num(b) {
++  var l = b.length
++  var words = b.words
++  var out = 0
++  if (l === 1) {
++    out = words[0]
++  } else if (l === 2) {
++    out = words[0] + (words[1] * 0x4000000)
++  } else {
++    var out = 0
++    for (var i = 0; i < l; i++) {
++      var w = words[i]
++      out += w * Math.pow(0x4000000, i)
+     }
+-
+-    //apply scale
+-    mat4.scale(matrix, matrix, scale)
+-    return matrix
++  }
++  return b.sign ? -out : out
+ }
+-},{"gl-mat4/create":115,"gl-mat4/fromRotationTranslation":118,"gl-mat4/identity":119,"gl-mat4/multiply":122,"gl-mat4/scale":128,"gl-mat4/translate":129}],22:[function(require,module,exports){
+-module.exports = require('gl-quat/slerp')
+-},{"gl-quat/slerp":23}],23:[function(require,module,exports){
+-module.exports = slerp
+ 
+-/**
+- * Performs a spherical linear interpolation between two quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {quat} out
+- */
+-function slerp (out, a, b, t) {
+-  // benchmarks:
+-  //    http://jsperf.com/quaternion-slerp-implementations
++},{}],25:[function(require,module,exports){
++'use strict'
+ 
+-  var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-    bx = b[0], by = b[1], bz = b[2], bw = b[3]
++var db = require('double-bits')
++var ctz = require('bit-twiddle').countTrailingZeros
+ 
+-  var omega, cosom, sinom, scale0, scale1
++module.exports = ctzNumber
+ 
+-  // calc cosine
+-  cosom = ax * bx + ay * by + az * bz + aw * bw
+-  // adjust signs (if necessary)
+-  if (cosom < 0.0) {
+-    cosom = -cosom
+-    bx = -bx
+-    by = -by
+-    bz = -bz
+-    bw = -bw
++//Counts the number of trailing zeros
++function ctzNumber(x) {
++  var l = ctz(db.lo(x))
++  if(l < 32) {
++    return l
+   }
+-  // calculate coefficients
+-  if ((1.0 - cosom) > 0.000001) {
+-    // standard case (slerp)
+-    omega = Math.acos(cosom)
+-    sinom = Math.sin(omega)
+-    scale0 = Math.sin((1.0 - t) * omega) / sinom
+-    scale1 = Math.sin(t * omega) / sinom
+-  } else {
+-    // "from" and "to" quaternions are very close
+-    //  ... so we can do a linear interpolation
+-    scale0 = 1.0 - t
+-    scale1 = t
++  var h = ctz(db.hi(x))
++  if(h > 20) {
++    return 52
+   }
+-  // calculate final values
+-  out[0] = scale0 * ax + scale1 * bx
+-  out[1] = scale0 * ay + scale1 * by
+-  out[2] = scale0 * az + scale1 * bz
+-  out[3] = scale0 * aw + scale1 * bw
+-
+-  return out
++  return h + 32
+ }
+ 
+-},{}],24:[function(require,module,exports){
++},{"bit-twiddle":35,"double-bits":76}],26:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = quatFromFrame
++var BN = require('bn.js')
+ 
+-function quatFromFrame(
+-  out,
+-  rx, ry, rz,
+-  ux, uy, uz,
+-  fx, fy, fz) {
+-  var tr = rx + uy + fz
+-  if(l > 0) {
+-    var l = Math.sqrt(tr + 1.0)
+-    out[0] = 0.5 * (uz - fy) / l
+-    out[1] = 0.5 * (fx - rz) / l
+-    out[2] = 0.5 * (ry - uy) / l
+-    out[3] = 0.5 * l
+-  } else {
+-    var tf = Math.max(rx, uy, fz)
+-    var l = Math.sqrt(2 * tf - tr + 1.0)
+-    if(rx >= tf) {
+-      //x y z  order
+-      out[0] = 0.5 * l
+-      out[1] = 0.5 * (ux + ry) / l
+-      out[2] = 0.5 * (fx + rz) / l
+-      out[3] = 0.5 * (uz - fy) / l
+-    } else if(uy >= tf) {
+-      //y z x  order
+-      out[0] = 0.5 * (ry + ux) / l
+-      out[1] = 0.5 * l
+-      out[2] = 0.5 * (fy + uz) / l
+-      out[3] = 0.5 * (fx - rz) / l
+-    } else {
+-      //z x y  order
+-      out[0] = 0.5 * (rz + fx) / l
+-      out[1] = 0.5 * (uz + fy) / l
+-      out[2] = 0.5 * l
+-      out[3] = 0.5 * (ry - ux) / l
+-    }
+-  }
+-  return out
+-}
+-},{}],25:[function(require,module,exports){
+-'use strict'
++module.exports = isBN
+ 
+-module.exports = createOrbitController
++//Test if x is a bignumber
++//FIXME: obviously this is the wrong way to do it
++function isBN(x) {
++  return x && typeof x === 'object' && Boolean(x.words)
++}
+ 
+-var filterVector  = require('filtered-vector')
+-var lookAt        = require('gl-mat4/lookAt')
+-var mat4FromQuat  = require('gl-mat4/fromQuat')
+-var invert44      = require('gl-mat4/invert')
+-var quatFromFrame = require('./lib/quatFromFrame')
++},{"bn.js":36}],27:[function(require,module,exports){
++'use strict'
+ 
+-function len3(x,y,z) {
+-  return Math.sqrt(Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
+-}
++var BN = require('bn.js')
++var db = require('double-bits')
+ 
+-function len4(w,x,y,z) {
+-  return Math.sqrt(Math.pow(w,2) + Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
+-}
++module.exports = num2bn
+ 
+-function normalize4(out, a) {
+-  var ax = a[0]
+-  var ay = a[1]
+-  var az = a[2]
+-  var aw = a[3]
+-  var al = len4(ax, ay, az, aw)
+-  if(al > 1e-6) {
+-    out[0] = ax/al
+-    out[1] = ay/al
+-    out[2] = az/al
+-    out[3] = aw/al
++function num2bn(x) {
++  var e = db.exponent(x)
++  if(e < 52) {
++    return new BN(x)
+   } else {
+-    out[0] = out[1] = out[2] = 0.0
+-    out[3] = 1.0
++    return (new BN(x * Math.pow(2, 52-e))).shln(e-52)
+   }
+ }
+ 
+-function OrbitCameraController(initQuat, initCenter, initRadius) {
+-  this.radius    = filterVector([initRadius])
+-  this.center    = filterVector(initCenter)
+-  this.rotation  = filterVector(initQuat)
+-
+-  this.computedRadius   = this.radius.curve(0)
+-  this.computedCenter   = this.center.curve(0)
+-  this.computedRotation = this.rotation.curve(0)
+-  this.computedUp       = [0.1,0,0]
+-  this.computedEye      = [0.1,0,0]
+-  this.computedMatrix   = [0.1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
++},{"bn.js":36,"double-bits":76}],28:[function(require,module,exports){
++'use strict'
+ 
+-  this.recalcMatrix(0)
+-}
++var num2bn = require('./num-to-bn')
++var sign = require('./bn-sign')
+ 
+-var proto = OrbitCameraController.prototype
++module.exports = rationalize
+ 
+-proto.lastT = function() {
+-  return Math.max(
+-    this.radius.lastT(),
+-    this.center.lastT(),
+-    this.rotation.lastT())
++function rationalize(numer, denom) {
++  var snumer = sign(numer)
++  var sdenom = sign(denom)
++  if(snumer === 0) {
++    return [num2bn(0), num2bn(1)]
++  }
++  if(sdenom === 0) {
++    return [num2bn(0), num2bn(0)]
++  }
++  if(sdenom < 0) {
++    numer = numer.neg()
++    denom = denom.neg()
++  }
++  var d = numer.gcd(denom)
++  if(d.cmpn(1)) {
++    return [ numer.div(d), denom.div(d) ]
++  }
++  return [ numer, denom ]
+ }
+ 
+-proto.recalcMatrix = function(t) {
+-  this.radius.curve(t)
+-  this.center.curve(t)
+-  this.rotation.curve(t)
+-
+-  var quat = this.computedRotation
+-  normalize4(quat, quat)
+-
+-  var mat = this.computedMatrix
+-  mat4FromQuat(mat, quat)
++},{"./bn-sign":23,"./num-to-bn":27}],29:[function(require,module,exports){
++'use strict'
+ 
+-  var center = this.computedCenter
+-  var eye    = this.computedEye
+-  var up     = this.computedUp
+-  var radius = Math.exp(this.computedRadius[0])
++var BN = require('bn.js')
+ 
+-  eye[0] = center[0] + radius * mat[2]
+-  eye[1] = center[1] + radius * mat[6]
+-  eye[2] = center[2] + radius * mat[10]
+-  up[0] = mat[1]
+-  up[1] = mat[5]
+-  up[2] = mat[9]
++module.exports = str2BN
+ 
+-  for(var i=0; i<3; ++i) {
+-    var rr = 0.0
+-    for(var j=0; j<3; ++j) {
+-      rr += mat[i+4*j] * eye[j]
+-    }
+-    mat[12+i] = -rr
+-  }
++function str2BN(x) {
++  return new BN(x)
+ }
+ 
+-proto.getMatrix = function(t, result) {
+-  this.recalcMatrix(t)
+-  var m = this.computedMatrix
+-  if(result) {
+-    for(var i=0; i<16; ++i) {
+-      result[i] = m[i]
+-    }
+-    return result
+-  }
+-  return m
+-}
++},{"bn.js":36}],30:[function(require,module,exports){
++'use strict'
+ 
+-proto.idle = function(t) {
+-  this.center.idle(t)
+-  this.radius.idle(t)
+-  this.rotation.idle(t)
+-}
++var rationalize = require('./lib/rationalize')
+ 
+-proto.flush = function(t) {
+-  this.center.flush(t)
+-  this.radius.flush(t)
+-  this.rotation.flush(t)
++module.exports = mul
++
++function mul(a, b) {
++  return rationalize(a[0].mul(b[0]), a[1].mul(b[1]))
+ }
+ 
+-proto.pan = function(t, dx, dy, dz) {
+-  dx = dx || 0.0
+-  dy = dy || 0.0
+-  dz = dz || 0.0
++},{"./lib/rationalize":28}],31:[function(require,module,exports){
++'use strict'
+ 
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
++var bnsign = require('./lib/bn-sign')
+ 
+-  var ux = mat[1]
+-  var uy = mat[5]
+-  var uz = mat[9]
+-  var ul = len3(ux, uy, uz)
+-  ux /= ul
+-  uy /= ul
+-  uz /= ul
++module.exports = sign
+ 
+-  var rx = mat[0]
+-  var ry = mat[4]
+-  var rz = mat[8]
+-  var ru = rx * ux + ry * uy + rz * uz
+-  rx -= ux * ru
+-  ry -= uy * ru
+-  rz -= uz * ru
+-  var rl = len3(rx, ry, rz)
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
++function sign(x) {
++  return bnsign(x[0]) * bnsign(x[1])
++}
+ 
+-  var fx = mat[2]
+-  var fy = mat[6]
+-  var fz = mat[10]
+-  var fu = fx * ux + fy * uy + fz * uz
+-  var fr = fx * rx + fy * ry + fz * rz
+-  fx -= fu * ux + fr * rx
+-  fy -= fu * uy + fr * ry
+-  fz -= fu * uz + fr * rz
+-  var fl = len3(fx, fy, fz)
+-  fx /= fl
+-  fy /= fl
+-  fz /= fl
++},{"./lib/bn-sign":23}],32:[function(require,module,exports){
++'use strict'
+ 
+-  var vx = rx * dx + ux * dy
+-  var vy = ry * dx + uy * dy
+-  var vz = rz * dx + uz * dy
++var rationalize = require('./lib/rationalize')
+ 
+-  this.center.move(t, vx, vy, vz)
++module.exports = sub
+ 
+-  //Update z-component of radius
+-  var radius = Math.exp(this.computedRadius[0])
+-  radius = Math.max(1e-4, radius + dz)
+-  this.radius.set(t, Math.log(radius))
++function sub(a, b) {
++  return rationalize(a[0].mul(b[1]).sub(a[1].mul(b[0])), a[1].mul(b[1]))
+ }
+ 
+-proto.rotate = function(t, dx, dy, dz) {
+-  this.recalcMatrix(t)
+-
+-  dx = dx||0.0
+-  dy = dy||0.0
+-
+-  var mat = this.computedMatrix
++},{"./lib/rationalize":28}],33:[function(require,module,exports){
++'use strict'
+ 
+-  var rx = mat[0]
+-  var ry = mat[4]
+-  var rz = mat[8]
++var bn2num = require('./lib/bn-to-num')
++var ctz = require('./lib/ctz')
+ 
+-  var ux = mat[1]
+-  var uy = mat[5]
+-  var uz = mat[9]
++module.exports = roundRat
+ 
+-  var fx = mat[2]
+-  var fy = mat[6]
+-  var fz = mat[10]
++//Round a rational to the closest float
++function roundRat(f) {
++  var a = f[0]
++  var b = f[1]
++  if(a.cmpn(0) === 0) {
++    return 0
++  }
++  var h = a.divmod(b)
++  var iv = h.div
++  var x = bn2num(iv)
++  var ir = h.mod
++  if(ir.cmpn(0) === 0) {
++    return x
++  }
++  if(x) {
++    var s = ctz(x) + 4
++    var y = bn2num(ir.shln(s).divRound(b))
+ 
+-  var qx = dx * rx + dy * ux
+-  var qy = dx * ry + dy * uy
+-  var qz = dx * rz + dy * uz
++    // flip the sign of y if x is negative
++    if (x<0) {
++      y = -y;
++    }
+ 
+-  var bx = -(fy * qz - fz * qy)
+-  var by = -(fz * qx - fx * qz)
+-  var bz = -(fx * qy - fy * qx)  
+-  var bw = Math.sqrt(Math.max(0.0, 1.0 - Math.pow(bx,2) - Math.pow(by,2) - Math.pow(bz,2)))
+-  var bl = len4(bx, by, bz, bw)
+-  if(bl > 1e-6) {
+-    bx /= bl
+-    by /= bl
+-    bz /= bl
+-    bw /= bl
++    return x + y * Math.pow(2, -s)
+   } else {
+-    bx = by = bz = 0.0
+-    bw = 1.0
++    var ybits = b.bitLength() - ir.bitLength() + 53
++    var y = bn2num(ir.shln(ybits).divRound(b))
++    if(ybits < 1023) {
++      return y * Math.pow(2, -ybits)
++    }
++    y *= Math.pow(2, -1023)
++    return y * Math.pow(2, 1023-ybits)
+   }
++}
+ 
+-  var rotation = this.computedRotation
+-  var ax = rotation[0]
+-  var ay = rotation[1]
+-  var az = rotation[2]
+-  var aw = rotation[3]
++},{"./lib/bn-to-num":24,"./lib/ctz":25}],34:[function(require,module,exports){
++"use strict"
+ 
+-  var cx = ax*bw + aw*bx + ay*bz - az*by
+-  var cy = ay*bw + aw*by + az*bx - ax*bz
+-  var cz = az*bw + aw*bz + ax*by - ay*bx
+-  var cw = aw*bw - ax*bx - ay*by - az*bz
+-  
+-  //Apply roll
+-  if(dz) {
+-    bx = fx
+-    by = fy
+-    bz = fz
+-    var s = Math.sin(dz) / len3(bx, by, bz)
+-    bx *= s
+-    by *= s
+-    bz *= s
+-    bw = Math.cos(dx)
+-    cx = cx*bw + cw*bx + cy*bz - cz*by
+-    cy = cy*bw + cw*by + cz*bx - cx*bz
+-    cz = cz*bw + cw*bz + cx*by - cy*bx
+-    cw = cw*bw - cx*bx - cy*by - cz*bz
++function compileSearch(funcName, predicate, reversed, extraArgs, useNdarray, earlyOut) {
++  var code = [
++    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
++earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
++";while(l<=h){\
++var m=(l+h)>>>1,x=a", useNdarray ? ".get(m)" : "[m]"]
++  if(earlyOut) {
++    if(predicate.indexOf("c") < 0) {
++      code.push(";if(x===y){return m}else if(x<=y){")
++    } else {
++      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
++    }
++  } else {
++    code.push(";if(", predicate, "){i=m;")
+   }
+-
+-  var cl = len4(cx, cy, cz, cw)
+-  if(cl > 1e-6) {
+-    cx /= cl
+-    cy /= cl
+-    cz /= cl
+-    cw /= cl
++  if(reversed) {
++    code.push("l=m+1}else{h=m-1}")
+   } else {
+-    cx = cy = cz = 0.0
+-    cw = 1.0
++    code.push("h=m-1}else{l=m+1}")
++  }
++  code.push("}")
++  if(earlyOut) {
++    code.push("return -1};")
++  } else {
++    code.push("return i};")
+   }
++  return code.join("")
++}
+ 
+-  this.rotation.set(t, cx, cy, cz, cw)
++function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
++  var result = new Function([
++  compileSearch("A", "x" + predicate + "y", reversed, ["y"], false, earlyOut),
++  compileSearch("B", "x" + predicate + "y", reversed, ["y"], true, earlyOut),
++  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], false, earlyOut),
++  compileSearch("Q", "c(x,y)" + predicate + "0", reversed, ["y", "c"], true, earlyOut),
++"function dispatchBsearch", suffix, "(a,y,c,l,h){\
++if(a.shape){\
++if(typeof(c)==='function'){\
++return Q(a,(l===undefined)?0:l|0,(h===undefined)?a.shape[0]-1:h|0,y,c)\
++}else{\
++return B(a,(c===undefined)?0:c|0,(l===undefined)?a.shape[0]-1:l|0,y)\
++}}else{\
++if(typeof(c)==='function'){\
++return P(a,(l===undefined)?0:l|0,(h===undefined)?a.length-1:h|0,y,c)\
++}else{\
++return A(a,(c===undefined)?0:c|0,(l===undefined)?a.length-1:l|0,y)\
++}}}\
++return dispatchBsearch", suffix].join(""))
++  return result()
+ }
+ 
+-proto.lookAt = function(t, eye, center, up) {
+-  this.recalcMatrix(t)
++module.exports = {
++  ge: compileBoundsSearch(">=", false, "GE"),
++  gt: compileBoundsSearch(">", false, "GT"),
++  lt: compileBoundsSearch("<", true, "LT"),
++  le: compileBoundsSearch("<=", true, "LE"),
++  eq: compileBoundsSearch("-", true, "EQ", true)
++}
+ 
+-  center = center || this.computedCenter
+-  eye    = eye    || this.computedEye
+-  up     = up     || this.computedUp
++},{}],35:[function(require,module,exports){
++/**
++ * Bit twiddling hacks for JavaScript.
++ *
++ * Author: Mikola Lysenko
++ *
++ * Ported from Stanford bit twiddling hack library:
++ *    http://graphics.stanford.edu/~seander/bithacks.html
++ */
+ 
+-  var mat = this.computedMatrix
+-  lookAt(mat, eye, center, up)
++"use strict"; "use restrict";
+ 
+-  var rotation = this.computedRotation
+-  quatFromFrame(rotation,
+-    mat[0], mat[1], mat[2],
+-    mat[4], mat[5], mat[6],
+-    mat[8], mat[9], mat[10])
+-  normalize4(rotation, rotation)
+-  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
++//Number of bits in an integer
++var INT_BITS = 32;
+ 
+-  var fl = 0.0
+-  for(var i=0; i<3; ++i) {
+-    fl += Math.pow(center[i] - eye[i], 2)
+-  }
+-  this.radius.set(t, 0.5 * Math.log(Math.max(fl, 1e-6)))
++//Constants
++exports.INT_BITS  = INT_BITS;
++exports.INT_MAX   =  0x7fffffff;
++exports.INT_MIN   = -1<<(INT_BITS-1);
+ 
+-  this.center.set(t, center[0], center[1], center[2])
++//Returns -1, 0, +1 depending on sign of x
++exports.sign = function(v) {
++  return (v > 0) - (v < 0);
+ }
+ 
+-proto.translate = function(t, dx, dy, dz) {
+-  this.center.move(t,
+-    dx||0.0,
+-    dy||0.0,
+-    dz||0.0)
++//Computes absolute value of integer
++exports.abs = function(v) {
++  var mask = v >> (INT_BITS-1);
++  return (v ^ mask) - mask;
+ }
+ 
+-proto.setMatrix = function(t, matrix) {
+-
+-  var rotation = this.computedRotation
+-  quatFromFrame(rotation,
+-    matrix[0], matrix[1], matrix[2],
+-    matrix[4], matrix[5], matrix[6],
+-    matrix[8], matrix[9], matrix[10])
+-  normalize4(rotation, rotation)
+-  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
+-
+-  var mat = this.computedMatrix
+-  invert44(mat, matrix)
+-  var w = mat[15]
+-  if(Math.abs(w) > 1e-6) {
+-    var cx = mat[12]/w
+-    var cy = mat[13]/w
+-    var cz = mat[14]/w
++//Computes minimum of integers x and y
++exports.min = function(x, y) {
++  return y ^ ((x ^ y) & -(x < y));
++}
+ 
+-    this.recalcMatrix(t)  
+-    var r = Math.exp(this.computedRadius[0])
+-    this.center.set(t, cx-mat[2]*r, cy-mat[6]*r, cz-mat[10]*r)
+-    this.radius.idle(t)
+-  } else {
+-    this.center.idle(t)
+-    this.radius.idle(t)
+-  }
++//Computes maximum of integers x and y
++exports.max = function(x, y) {
++  return x ^ ((x ^ y) & -(x < y));
+ }
+ 
+-proto.setDistance = function(t, d) {
+-  if(d > 0) {
+-    this.radius.set(t, Math.log(d))
+-  }
++//Checks if a number is a power of two
++exports.isPow2 = function(v) {
++  return !(v & (v-1)) && (!!v);
+ }
+ 
+-proto.setDistanceLimits = function(lo, hi) {
+-  if(lo > 0) {
+-    lo = Math.log(lo)
+-  } else {
+-    lo = -Infinity    
+-  }
+-  if(hi > 0) {
+-    hi = Math.log(hi)
+-  } else {
+-    hi = Infinity
+-  }
+-  hi = Math.max(hi, lo)
+-  this.radius.bounds[0][0] = lo
+-  this.radius.bounds[1][0] = hi
++//Computes log base 2 of v
++exports.log2 = function(v) {
++  var r, shift;
++  r =     (v > 0xFFFF) << 4; v >>>= r;
++  shift = (v > 0xFF  ) << 3; v >>>= shift; r |= shift;
++  shift = (v > 0xF   ) << 2; v >>>= shift; r |= shift;
++  shift = (v > 0x3   ) << 1; v >>>= shift; r |= shift;
++  return r | (v >> 1);
+ }
+ 
+-proto.getDistanceLimits = function(out) {
+-  var bounds = this.radius.bounds
+-  if(out) {
+-    out[0] = Math.exp(bounds[0][0])
+-    out[1] = Math.exp(bounds[1][0])
+-    return out
+-  }
+-  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
++//Computes log base 10 of v
++exports.log10 = function(v) {
++  return  (v >= 1000000000) ? 9 : (v >= 100000000) ? 8 : (v >= 10000000) ? 7 :
++          (v >= 1000000) ? 6 : (v >= 100000) ? 5 : (v >= 10000) ? 4 :
++          (v >= 1000) ? 3 : (v >= 100) ? 2 : (v >= 10) ? 1 : 0;
+ }
+ 
+-proto.toJSON = function() {
+-  this.recalcMatrix(this.lastT())
+-  return {
+-    center:   this.computedCenter.slice(),
+-    rotation: this.computedRotation.slice(),
+-    distance: Math.log(this.computedRadius[0]),
+-    zoomMin:  this.radius.bounds[0][0],
+-    zoomMax:  this.radius.bounds[1][0]
+-  }
++//Counts number of bits
++exports.popCount = function(v) {
++  v = v - ((v >>> 1) & 0x55555555);
++  v = (v & 0x33333333) + ((v >>> 2) & 0x33333333);
++  return ((v + (v >>> 4) & 0xF0F0F0F) * 0x1010101) >>> 24;
+ }
+ 
+-proto.fromJSON = function(options) {
+-  var t = this.lastT()
+-  var c = options.center
+-  if(c) {
+-    this.center.set(t, c[0], c[1], c[2])
+-  }
+-  var r = options.rotation
+-  if(r) {
+-    this.rotation.set(t, r[0], r[1], r[2], r[3])
+-  }
+-  var d = options.distance
+-  if(d && d > 0) {
+-    this.radius.set(t, Math.log(d))
+-  }
+-  this.setDistanceLimits(options.zoomMin, options.zoomMax)
++//Counts number of trailing zeros
++function countTrailingZeros(v) {
++  var c = 32;
++  v &= -v;
++  if (v) c--;
++  if (v & 0x0000FFFF) c -= 16;
++  if (v & 0x00FF00FF) c -= 8;
++  if (v & 0x0F0F0F0F) c -= 4;
++  if (v & 0x33333333) c -= 2;
++  if (v & 0x55555555) c -= 1;
++  return c;
+ }
++exports.countTrailingZeros = countTrailingZeros;
+ 
+-function createOrbitController(options) {
+-  options = options || {}
+-  var center   = options.center   || [0,0,0]
+-  var rotation = options.rotation || [0,0,0,1]
+-  var radius   = options.radius   || 1.0
++//Rounds to next power of 2
++exports.nextPow2 = function(v) {
++  v += v === 0;
++  --v;
++  v |= v >>> 1;
++  v |= v >>> 2;
++  v |= v >>> 4;
++  v |= v >>> 8;
++  v |= v >>> 16;
++  return v + 1;
++}
+ 
+-  center = [].slice.call(center, 0, 3)
+-  rotation = [].slice.call(rotation, 0, 4)
+-  normalize4(rotation, rotation)
++//Rounds down to previous power of 2
++exports.prevPow2 = function(v) {
++  v |= v >>> 1;
++  v |= v >>> 2;
++  v |= v >>> 4;
++  v |= v >>> 8;
++  v |= v >>> 16;
++  return v - (v>>>1);
++}
+ 
+-  var result = new OrbitCameraController(
+-    rotation,
+-    center,
+-    Math.log(radius))
++//Computes parity of word
++exports.parity = function(v) {
++  v ^= v >>> 16;
++  v ^= v >>> 8;
++  v ^= v >>> 4;
++  v &= 0xf;
++  return (0x6996 >>> v) & 1;
++}
+ 
+-  result.setDistanceLimits(options.zoomMin, options.zoomMax)
++var REVERSE_TABLE = new Array(256);
+ 
+-  if('eye' in options || 'up' in options) {
+-    result.lookAt(0, options.eye, options.center, options.up)
++(function(tab) {
++  for(var i=0; i<256; ++i) {
++    var v = i, r = i, s = 7;
++    for (v >>>= 1; v; v >>>= 1) {
++      r <<= 1;
++      r |= v & 1;
++      --s;
++    }
++    tab[i] = (r << s) & 0xff;
+   }
++})(REVERSE_TABLE);
+ 
+-  return result
++//Reverse bits in a 32 bit word
++exports.reverse = function(v) {
++  return  (REVERSE_TABLE[ v         & 0xff] << 24) |
++          (REVERSE_TABLE[(v >>> 8)  & 0xff] << 16) |
++          (REVERSE_TABLE[(v >>> 16) & 0xff] << 8)  |
++           REVERSE_TABLE[(v >>> 24) & 0xff];
+ }
+-},{"./lib/quatFromFrame":24,"filtered-vector":8,"gl-mat4/fromQuat":117,"gl-mat4/invert":120,"gl-mat4/lookAt":121}],26:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = createTurntableController
++//Interleave bits of 2 coordinates with 16 bits.  Useful for fast quadtree codes
++exports.interleave2 = function(x, y) {
++  x &= 0xFFFF;
++  x = (x | (x << 8)) & 0x00FF00FF;
++  x = (x | (x << 4)) & 0x0F0F0F0F;
++  x = (x | (x << 2)) & 0x33333333;
++  x = (x | (x << 1)) & 0x55555555;
+ 
+-var filterVector = require('filtered-vector')
+-var invert44     = require('gl-mat4/invert')
+-var rotateM      = require('gl-mat4/rotate')
+-var cross        = require('gl-vec3/cross')
+-var normalize3   = require('gl-vec3/normalize')
+-var dot3         = require('gl-vec3/dot')
++  y &= 0xFFFF;
++  y = (y | (y << 8)) & 0x00FF00FF;
++  y = (y | (y << 4)) & 0x0F0F0F0F;
++  y = (y | (y << 2)) & 0x33333333;
++  y = (y | (y << 1)) & 0x55555555;
+ 
+-function len3(x, y, z) {
+-  return Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2) + Math.pow(z, 2))
++  return x | (y << 1);
+ }
+ 
+-function clamp1(x) {
+-  return Math.min(1.0, Math.max(-1.0, x))
++//Extracts the nth interleaved component
++exports.deinterleave2 = function(v, n) {
++  v = (v >>> n) & 0x55555555;
++  v = (v | (v >>> 1))  & 0x33333333;
++  v = (v | (v >>> 2))  & 0x0F0F0F0F;
++  v = (v | (v >>> 4))  & 0x00FF00FF;
++  v = (v | (v >>> 16)) & 0x000FFFF;
++  return (v << 16) >> 16;
+ }
+ 
+-function findOrthoPair(v) {
+-  var vx = Math.abs(v[0])
+-  var vy = Math.abs(v[1])
+-  var vz = Math.abs(v[2])
+ 
+-  var u = [0,0,0]
+-  if(vx > Math.max(vy, vz)) {
+-    u[2] = 1
+-  } else if(vy > Math.max(vx, vz)) {
+-    u[0] = 1
+-  } else {
+-    u[1] = 1
+-  }
++//Interleave bits of 3 coordinates, each with 10 bits.  Useful for fast octree codes
++exports.interleave3 = function(x, y, z) {
++  x &= 0x3FF;
++  x  = (x | (x<<16)) & 4278190335;
++  x  = (x | (x<<8))  & 251719695;
++  x  = (x | (x<<4))  & 3272356035;
++  x  = (x | (x<<2))  & 1227133513;
+ 
+-  var vv = 0
+-  var uv = 0
+-  for(var i=0; i<3; ++i ) {
+-    vv += v[i] * v[i]
+-    uv += u[i] * v[i]
+-  }
+-  for(var i=0; i<3; ++i) {
+-    u[i] -= (uv / vv) *  v[i]
+-  }
+-  normalize3(u, u)
+-  return u
++  y &= 0x3FF;
++  y  = (y | (y<<16)) & 4278190335;
++  y  = (y | (y<<8))  & 251719695;
++  y  = (y | (y<<4))  & 3272356035;
++  y  = (y | (y<<2))  & 1227133513;
++  x |= (y << 1);
++  
++  z &= 0x3FF;
++  z  = (z | (z<<16)) & 4278190335;
++  z  = (z | (z<<8))  & 251719695;
++  z  = (z | (z<<4))  & 3272356035;
++  z  = (z | (z<<2))  & 1227133513;
++  
++  return x | (z << 2);
+ }
+ 
+-function TurntableController(zoomMin, zoomMax, center, up, right, radius, theta, phi) {
+-  this.center = filterVector(center)
+-  this.up     = filterVector(up)
+-  this.right  = filterVector(right)
+-  this.radius = filterVector([radius])
+-  this.angle  = filterVector([theta, phi])
+-  this.angle.bounds = [[-Infinity,-Math.PI/2], [Infinity,Math.PI/2]]
+-  this.setDistanceLimits(zoomMin, zoomMax)
+-
+-  this.computedCenter = this.center.curve(0)
+-  this.computedUp     = this.up.curve(0)
+-  this.computedRight  = this.right.curve(0)
+-  this.computedRadius = this.radius.curve(0)
+-  this.computedAngle  = this.angle.curve(0)
+-  this.computedToward = [0,0,0]
+-  this.computedEye    = [0,0,0]
+-  this.computedMatrix = new Array(16)
+-  for(var i=0; i<16; ++i) {
+-    this.computedMatrix[i] = 0.5
+-  }
++//Extracts nth interleaved component of a 3-tuple
++exports.deinterleave3 = function(v, n) {
++  v = (v >>> n)       & 1227133513;
++  v = (v | (v>>>2))   & 3272356035;
++  v = (v | (v>>>4))   & 251719695;
++  v = (v | (v>>>8))   & 4278190335;
++  v = (v | (v>>>16))  & 0x3FF;
++  return (v<<22)>>22;
++}
+ 
+-  this.recalcMatrix(0)
++//Computes next combination in colexicographic order (this is mistakenly called nextPermutation on the bit twiddling hacks page)
++exports.nextCombination = function(v) {
++  var t = v | (v - 1);
++  return (t + 1) | (((~t & -~t) - 1) >>> (countTrailingZeros(v) + 1));
+ }
+ 
+-var proto = TurntableController.prototype
+ 
+-proto.setDistanceLimits = function(minDist, maxDist) {
+-  if(minDist > 0) {
+-    minDist = Math.log(minDist)
+-  } else {
+-    minDist = -Infinity
+-  }
+-  if(maxDist > 0) {
+-    maxDist = Math.log(maxDist)
+-  } else {
+-    maxDist = Infinity
+-  }
+-  maxDist = Math.max(maxDist, minDist)
+-  this.radius.bounds[0][0] = minDist
+-  this.radius.bounds[1][0] = maxDist
++},{}],36:[function(require,module,exports){
++(function (module, exports) {
++
++'use strict';
++
++// Utils
++
++function assert(val, msg) {
++  if (!val)
++    throw new Error(msg || 'Assertion failed');
+ }
+ 
+-proto.getDistanceLimits = function(out) {
+-  var bounds = this.radius.bounds[0]
+-  if(out) {
+-    out[0] = Math.exp(bounds[0][0])
+-    out[1] = Math.exp(bounds[1][0])
+-    return out
+-  }
+-  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
++// Could use `inherits` module, but don't want to move from single file
++// architecture yet.
++function inherits(ctor, superCtor) {
++  ctor.super_ = superCtor;
++  var TempCtor = function () {};
++  TempCtor.prototype = superCtor.prototype;
++  ctor.prototype = new TempCtor();
++  ctor.prototype.constructor = ctor;
+ }
+ 
+-proto.recalcMatrix = function(t) {
+-  //Recompute curves
+-  this.center.curve(t)
+-  this.up.curve(t)
+-  this.right.curve(t)
+-  this.radius.curve(t)
+-  this.angle.curve(t)
++// BN
+ 
+-  //Compute frame for camera matrix
+-  var up     = this.computedUp
+-  var right  = this.computedRight
+-  var uu = 0.0
+-  var ur = 0.0
+-  for(var i=0; i<3; ++i) {
+-    ur += up[i] * right[i]
+-    uu += up[i] * up[i]
+-  }
+-  var ul = Math.sqrt(uu)
+-  var rr = 0.0
+-  for(var i=0; i<3; ++i) {
+-    right[i] -= up[i] * ur / uu
+-    rr       += right[i] * right[i]
+-    up[i]    /= ul
++function BN(number, base, endian) {
++  // May be `new BN(bn)` ?
++  if (number !== null &&
++      typeof number === 'object' &&
++      Array.isArray(number.words)) {
++    return number;
+   }
+-  var rl = Math.sqrt(rr)
+-  for(var i=0; i<3; ++i) {
+-    right[i] /= rl
++
++  this.sign = false;
++  this.words = null;
++  this.length = 0;
++
++  // Reduction context
++  this.red = null;
++
++  if (base === 'le' || base === 'be') {
++    endian = base;
++    base = 10;
+   }
+ 
+-  //Compute toward vector
+-  var toward = this.computedToward
+-  cross(toward, up, right)
+-  normalize3(toward, toward)
++  if (number !== null)
++    this._init(number || 0, base || 10, endian || 'be');
++}
++if (typeof module === 'object')
++  module.exports = BN;
++else
++  exports.BN = BN;
+ 
+-  //Compute angular parameters
+-  var radius = Math.exp(this.computedRadius[0])
+-  var theta  = this.computedAngle[0]
+-  var phi    = this.computedAngle[1]
++BN.BN = BN;
++BN.wordSize = 26;
+ 
+-  var ctheta = Math.cos(theta)
+-  var stheta = Math.sin(theta)
+-  var cphi   = Math.cos(phi)
+-  var sphi   = Math.sin(phi)
++BN.prototype._init = function init(number, base, endian) {
++  if (typeof number === 'number') {
++    return this._initNumber(number, base, endian);
++  } else if (typeof number === 'object') {
++    return this._initArray(number, base, endian);
++  }
++  if (base === 'hex')
++    base = 16;
++  assert(base === (base | 0) && base >= 2 && base <= 36);
+ 
+-  var center = this.computedCenter
++  number = number.toString().replace(/\s+/g, '');
++  var start = 0;
++  if (number[0] === '-')
++    start++;
+ 
+-  var wx = ctheta * cphi 
+-  var wy = stheta * cphi
+-  var wz = sphi
++  if (base === 16)
++    this._parseHex(number, start);
++  else
++    this._parseBase(number, base, start);
+ 
+-  var sx = -ctheta * sphi
+-  var sy = -stheta * sphi
+-  var sz = cphi
++  if (number[0] === '-')
++    this.sign = true;
+ 
+-  var eye = this.computedEye
+-  var mat = this.computedMatrix
+-  for(var i=0; i<3; ++i) {
+-    var x      = wx * right[i] + wy * toward[i] + wz * up[i]
+-    mat[4*i+1] = sx * right[i] + sy * toward[i] + sz * up[i]
+-    mat[4*i+2] = x
+-    mat[4*i+3] = 0.0
+-  }
++  this.strip();
+ 
+-  var ax = mat[1]
+-  var ay = mat[5]
+-  var az = mat[9]
+-  var bx = mat[2]
+-  var by = mat[6]
+-  var bz = mat[10]
+-  var cx = ay * bz - az * by
+-  var cy = az * bx - ax * bz
+-  var cz = ax * by - ay * bx
+-  var cl = len3(cx, cy, cz)
+-  cx /= cl
+-  cy /= cl
+-  cz /= cl
+-  mat[0] = cx
+-  mat[4] = cy
+-  mat[8] = cz
++  if (endian !== 'le')
++    return;
+ 
+-  for(var i=0; i<3; ++i) {
+-    eye[i] = center[i] + mat[2+4*i]*radius
+-  }
++  this._initArray(this.toArray(), base, endian);
++};
+ 
+-  for(var i=0; i<3; ++i) {
+-    var rr = 0.0
+-    for(var j=0; j<3; ++j) {
+-      rr += mat[i+4*j] * eye[j]
+-    }
+-    mat[12+i] = -rr
++BN.prototype._initNumber = function _initNumber(number, base, endian) {
++  if (number < 0) {
++    this.sign = true;
++    number = -number;
+   }
+-  mat[15] = 1.0
+-}
+-
+-proto.getMatrix = function(t, result) {
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
+-  if(result) {
+-    for(var i=0; i<16; ++i) {
+-      result[i] = mat[i]
+-    }
+-    return result
++  if (number < 0x4000000) {
++    this.words = [ number & 0x3ffffff ];
++    this.length = 1;
++  } else if (number < 0x10000000000000) {
++    this.words = [
++      number & 0x3ffffff,
++      (number / 0x4000000) & 0x3ffffff
++    ];
++    this.length = 2;
++  } else {
++    assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
++    this.words = [
++      number & 0x3ffffff,
++      (number / 0x4000000) & 0x3ffffff,
++      1
++    ];
++    this.length = 3;
+   }
+-  return mat
+-}
+ 
+-var zAxis = [0,0,0]
+-proto.rotate = function(t, dtheta, dphi, droll) {
+-  this.angle.move(t, dtheta, dphi)
+-  if(droll) {
+-    this.recalcMatrix(t)
++  if (endian !== 'le')
++    return;
+ 
+-    var mat = this.computedMatrix
+-    zAxis[0] = mat[2]
+-    zAxis[1] = mat[6]
+-    zAxis[2] = mat[10]
++  // Reverse the bytes
++  this._initArray(this.toArray(), base, endian);
++};
+ 
+-    var up     = this.computedUp
+-    var right  = this.computedRight
+-    var toward = this.computedToward
++BN.prototype._initArray = function _initArray(number, base, endian) {
++  // Perhaps a Uint8Array
++  assert(typeof number.length === 'number');
++  if (number.length <= 0) {
++    this.words = [ 0 ];
++    this.length = 1;
++    return this;
++  }
+ 
+-    for(var i=0; i<3; ++i) {
+-      mat[4*i]   = up[i]
+-      mat[4*i+1] = right[i]
+-      mat[4*i+2] = toward[i]
++  this.length = Math.ceil(number.length / 3);
++  this.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    this.words[i] = 0;
++
++  var off = 0;
++  if (endian === 'be') {
++    for (var i = number.length - 1, j = 0; i >= 0; i -= 3) {
++      var w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
++      this.words[j] |= (w << off) & 0x3ffffff;
++      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
++      off += 24;
++      if (off >= 26) {
++        off -= 26;
++        j++;
++      }
+     }
+-    rotateM(mat, mat, droll, zAxis)
+-    for(var i=0; i<3; ++i) {
+-      up[i] =    mat[4*i]
+-      right[i] = mat[4*i+1]
++  } else if (endian === 'le') {
++    for (var i = 0, j = 0; i < number.length; i += 3) {
++      var w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
++      this.words[j] |= (w << off) & 0x3ffffff;
++      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
++      off += 24;
++      if (off >= 26) {
++        off -= 26;
++        j++;
++      }
+     }
+-
+-    this.up.set(t, up[0], up[1], up[2])
+-    this.right.set(t, right[0], right[1], right[2])
+   }
+-}
++  return this.strip();
++};
+ 
+-proto.pan = function(t, dx, dy, dz) {
+-  dx = dx || 0.0
+-  dy = dy || 0.0
+-  dz = dz || 0.0
+-
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
+-
+-  var dist = Math.exp(this.computedRadius[0])
++function parseHex(str, start, end) {
++  var r = 0;
++  var len = Math.min(str.length, end);
++  for (var i = start; i < len; i++) {
++    var c = str.charCodeAt(i) - 48;
+ 
+-  var ux = mat[1]
+-  var uy = mat[5]
+-  var uz = mat[9]
+-  var ul = len3(ux, uy, uz)
+-  ux /= ul
+-  uy /= ul
+-  uz /= ul
++    r <<= 4;
+ 
+-  var rx = mat[0]
+-  var ry = mat[4]
+-  var rz = mat[8]
+-  var ru = rx * ux + ry * uy + rz * uz
+-  rx -= ux * ru
+-  ry -= uy * ru
+-  rz -= uz * ru
+-  var rl = len3(rx, ry, rz)
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
++    // 'a' - 'f'
++    if (c >= 49 && c <= 54)
++      r |= c - 49 + 0xa;
+ 
+-  var vx = rx * dx + ux * dy
+-  var vy = ry * dx + uy * dy
+-  var vz = rz * dx + uz * dy
+-  this.center.move(t, vx, vy, vz)
++    // 'A' - 'F'
++    else if (c >= 17 && c <= 22)
++      r |= c - 17 + 0xa;
+ 
+-  //Update z-component of radius
+-  var radius = Math.exp(this.computedRadius[0])
+-  radius = Math.max(1e-4, radius + dz)
+-  this.radius.set(t, Math.log(radius))
++    // '0' - '9'
++    else
++      r |= c & 0xf;
++  }
++  return r;
+ }
+ 
+-proto.translate = function(t, dx, dy, dz) {
+-  this.center.move(t,
+-    dx||0.0,
+-    dy||0.0,
+-    dz||0.0)
+-}
++BN.prototype._parseHex = function _parseHex(number, start) {
++  // Create possibly bigger array to ensure that it fits the number
++  this.length = Math.ceil((number.length - start) / 6);
++  this.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    this.words[i] = 0;
+ 
+-//Recenters the coordinate axes
+-proto.setMatrix = function(t, mat, axes, noSnap) {
+-  
+-  //Get the axes for tare
+-  var ushift = 1
+-  if(typeof axes === 'number') {
+-    ushift = (axes)|0
+-  } 
+-  if(ushift < 0 || ushift > 3) {
+-    ushift = 1
++  // Scan 24-bit chunks and add them to the number
++  var off = 0;
++  for (var i = number.length - 6, j = 0; i >= start; i -= 6) {
++    var w = parseHex(number, i, i + 6);
++    this.words[j] |= (w << off) & 0x3ffffff;
++    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
++    off += 24;
++    if (off >= 26) {
++      off -= 26;
++      j++;
++    }
+   }
+-  var vshift = (ushift + 2) % 3
+-  var fshift = (ushift + 1) % 3
+-
+-  //Recompute state for new t value
+-  if(!mat) { 
+-    this.recalcMatrix(t)
+-    mat = this.computedMatrix
++  if (i + 6 !== start) {
++    var w = parseHex(number, start, i + 6);
++    this.words[j] |= (w << off) & 0x3ffffff;
++    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
+   }
++  this.strip();
++};
+ 
+-  //Get right and up vectors
+-  var ux = mat[ushift]
+-  var uy = mat[ushift+4]
+-  var uz = mat[ushift+8]
+-  if(!noSnap) {
+-    var ul = len3(ux, uy, uz)
+-    ux /= ul
+-    uy /= ul
+-    uz /= ul
+-  } else {
+-    var ax = Math.abs(ux)
+-    var ay = Math.abs(uy)
+-    var az = Math.abs(uz)
+-    var am = Math.max(ax,ay,az)
+-    if(ax === am) {
+-      ux = (ux < 0) ? -1 : 1
+-      uy = uz = 0
+-    } else if(az === am) {
+-      uz = (uz < 0) ? -1 : 1
+-      ux = uy = 0
+-    } else {
+-      uy = (uy < 0) ? -1 : 1
+-      ux = uz = 0
+-    }
+-  }
++function parseBase(str, start, end, mul) {
++  var r = 0;
++  var len = Math.min(str.length, end);
++  for (var i = start; i < len; i++) {
++    var c = str.charCodeAt(i) - 48;
+ 
+-  var rx = mat[vshift]
+-  var ry = mat[vshift+4]
+-  var rz = mat[vshift+8]
+-  var ru = rx * ux + ry * uy + rz * uz
+-  rx -= ux * ru
+-  ry -= uy * ru
+-  rz -= uz * ru
+-  var rl = len3(rx, ry, rz)
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
+-  
+-  var fx = uy * rz - uz * ry
+-  var fy = uz * rx - ux * rz
+-  var fz = ux * ry - uy * rx
+-  var fl = len3(fx, fy, fz)
+-  fx /= fl
+-  fy /= fl
+-  fz /= fl
++    r *= mul;
+ 
+-  this.center.jump(t, ex, ey, ez)
+-  this.radius.idle(t)
+-  this.up.jump(t, ux, uy, uz)
+-  this.right.jump(t, rx, ry, rz)
++    // 'a'
++    if (c >= 49)
++      r += c - 49 + 0xa;
+ 
+-  var phi, theta
+-  if(ushift === 2) {
+-    var cx = mat[1]
+-    var cy = mat[5]
+-    var cz = mat[9]
+-    var cr = cx * rx + cy * ry + cz * rz
+-    var cf = cx * fx + cy * fy + cz * fz
+-    if(tu < 0) {
+-      phi = -Math.PI/2
+-    } else {
+-      phi = Math.PI/2
+-    }
+-    theta = Math.atan2(cf, cr)
+-  } else {
+-    var tx = mat[2]
+-    var ty = mat[6]
+-    var tz = mat[10]
+-    var tu = tx * ux + ty * uy + tz * uz
+-    var tr = tx * rx + ty * ry + tz * rz
+-    var tf = tx * fx + ty * fy + tz * fz
++    // 'A'
++    else if (c >= 17)
++      r += c - 17 + 0xa;
+ 
+-    phi = Math.asin(clamp1(tu))
+-    theta = Math.atan2(tf, tr)
++    // '0' - '9'
++    else
++      r += c;
+   }
+-
+-  this.angle.jump(t, theta, phi)
+-
+-  this.recalcMatrix(t)
+-  var dx = mat[2]
+-  var dy = mat[6]
+-  var dz = mat[10]
+-
+-  var imat = this.computedMatrix
+-  invert44(imat, mat)
+-  var w  = imat[15]
+-  var ex = imat[12] / w
+-  var ey = imat[13] / w
+-  var ez = imat[14] / w
+-
+-  var gs = Math.exp(this.computedRadius[0])
+-  this.center.jump(t, ex-dx*gs, ey-dy*gs, ez-dz*gs)
++  return r;
+ }
+ 
+-proto.lastT = function() {
+-  return Math.max(
+-    this.center.lastT(),
+-    this.up.lastT(),
+-    this.right.lastT(),
+-    this.radius.lastT(),
+-    this.angle.lastT())
+-}
++BN.prototype._parseBase = function _parseBase(number, base, start) {
++  // Initialize as zero
++  this.words = [ 0 ];
++  this.length = 1;
+ 
+-proto.idle = function(t) {
+-  this.center.idle(t)
+-  this.up.idle(t)
+-  this.right.idle(t)
+-  this.radius.idle(t)
+-  this.angle.idle(t)
+-}
++  // Find length of limb in base
++  for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base)
++    limbLen++;
++  limbLen--;
++  limbPow = (limbPow / base) | 0;
+ 
+-proto.flush = function(t) {
+-  this.center.flush(t)
+-  this.up.flush(t)
+-  this.right.flush(t)
+-  this.radius.flush(t)
+-  this.angle.flush(t)
+-}
++  var total = number.length - start;
++  var mod = total % limbLen;
++  var end = Math.min(total, total - mod) + start;
+ 
+-proto.setDistance = function(t, d) {
+-  if(d > 0) {
+-    this.radius.set(t, Math.log(d))
+-  }
+-}
++  var word = 0;
++  for (var i = start; i < end; i += limbLen) {
++    word = parseBase(number, i, i + limbLen, base);
+ 
+-proto.lookAt = function(t, eye, center, up) {
+-  this.recalcMatrix(t)
++    this.imuln(limbPow);
++    if (this.words[0] + word < 0x4000000)
++      this.words[0] += word;
++    else
++      this._iaddn(word);
++  }
+ 
+-  eye    = eye    || this.computedEye
+-  center = center || this.computedCenter
+-  up     = up     || this.computedUp
++  if (mod !== 0) {
++    var pow = 1;
++    var word = parseBase(number, i, number.length, base);
+ 
+-  var ux = up[0]
+-  var uy = up[1]
+-  var uz = up[2]
+-  var ul = len3(ux, uy, uz)
+-  if(ul < 1e-6) {
+-    return
++    for (var i = 0; i < mod; i++)
++      pow *= base;
++    this.imuln(pow);
++    if (this.words[0] + word < 0x4000000)
++      this.words[0] += word;
++    else
++      this._iaddn(word);
+   }
+-  ux /= ul
+-  uy /= ul
+-  uz /= ul
++};
+ 
+-  var tx = eye[0] - center[0]
+-  var ty = eye[1] - center[1]
+-  var tz = eye[2] - center[2]
+-  var tl = len3(tx, ty, tz)
+-  if(tl < 1e-6) {
+-    return
+-  }
+-  tx /= tl
+-  ty /= tl
+-  tz /= tl
++BN.prototype.copy = function copy(dest) {
++  dest.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    dest.words[i] = this.words[i];
++  dest.length = this.length;
++  dest.sign = this.sign;
++  dest.red = this.red;
++};
+ 
+-  var right = this.computedRight
+-  var rx = right[0]
+-  var ry = right[1]
+-  var rz = right[2]
+-  var ru = ux*rx + uy*ry + uz*rz
+-  rx -= ru * ux
+-  ry -= ru * uy
+-  rz -= ru * uz
+-  var rl = len3(rx, ry, rz)
++BN.prototype.clone = function clone() {
++  var r = new BN(null);
++  this.copy(r);
++  return r;
++};
+ 
+-  if(rl < 0.01) {
+-    rx = uy * tz - uz * ty
+-    ry = uz * tx - ux * tz
+-    rz = ux * ty - uy * tx
+-    rl = len3(rx, ry, rz)
+-    if(rl < 1e-6) {
+-      return
+-    }
+-  }
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
++// Remove leading `0` from `this`
++BN.prototype.strip = function strip() {
++  while (this.length > 1 && this.words[this.length - 1] === 0)
++    this.length--;
++  return this._normSign();
++};
+ 
+-  this.up.set(t, ux, uy, uz)
+-  this.right.set(t, rx, ry, rz)
+-  this.center.set(t, center[0], center[1], center[2])
+-  this.radius.set(t, Math.log(tl))
++BN.prototype._normSign = function _normSign() {
++  // -0 = 0
++  if (this.length === 1 && this.words[0] === 0)
++    this.sign = false;
++  return this;
++};
+ 
+-  var fx = uy * rz - uz * ry
+-  var fy = uz * rx - ux * rz
+-  var fz = ux * ry - uy * rx
+-  var fl = len3(fx, fy, fz)
+-  fx /= fl
+-  fy /= fl
+-  fz /= fl
++BN.prototype.inspect = function inspect() {
++  return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
++};
+ 
+-  var tu = ux*tx + uy*ty + uz*tz
+-  var tr = rx*tx + ry*ty + rz*tz
+-  var tf = fx*tx + fy*ty + fz*tz
++/*
+ 
+-  var phi   = Math.asin(clamp1(tu))
+-  var theta = Math.atan2(tf, tr)
++var zeros = [];
++var groupSizes = [];
++var groupBases = [];
+ 
+-  var angleState = this.angle._state
+-  var lastTheta  = angleState[angleState.length-1]
+-  var lastPhi    = angleState[angleState.length-2]
+-  lastTheta      = lastTheta % (2.0 * Math.PI)
+-  var dp = Math.abs(lastTheta + 2.0 * Math.PI - theta)
+-  var d0 = Math.abs(lastTheta - theta)
+-  var dn = Math.abs(lastTheta - 2.0 * Math.PI - theta)
+-  if(dp < d0) {
+-    lastTheta += 2.0 * Math.PI
+-  }
+-  if(dn < d0) {
+-    lastTheta -= 2.0 * Math.PI
++var s = '';
++var i = -1;
++while (++i < BN.wordSize) {
++  zeros[i] = s;
++  s += '0';
++}
++groupSizes[0] = 0;
++groupSizes[1] = 0;
++groupBases[0] = 0;
++groupBases[1] = 0;
++var base = 2 - 1;
++while (++base < 36 + 1) {
++  var groupSize = 0;
++  var groupBase = 1;
++  while (groupBase < (1 << BN.wordSize) / base) {
++    groupBase *= base;
++    groupSize += 1;
+   }
+-
+-  this.angle.jump(this.angle.lastT(), lastTheta, lastPhi)
+-  this.angle.set(t, theta, phi)
++  groupSizes[base] = groupSize;
++  groupBases[base] = groupBase;
+ }
+ 
+-function createTurntableController(options) {
+-  options = options || {}
+-
+-  var center = options.center || [0,0,0]
+-  var up     = options.up     || [0,1,0]
+-  var right  = options.right  || findOrthoPair(up)
+-  var radius = options.radius || 1.0
+-  var theta  = options.theta  || 0.0
+-  var phi    = options.phi    || 0.0
++*/
+ 
+-  center = [].slice.call(center, 0, 3)
++var zeros = [
++  '',
++  '0',
++  '00',
++  '000',
++  '0000',
++  '00000',
++  '000000',
++  '0000000',
++  '00000000',
++  '000000000',
++  '0000000000',
++  '00000000000',
++  '000000000000',
++  '0000000000000',
++  '00000000000000',
++  '000000000000000',
++  '0000000000000000',
++  '00000000000000000',
++  '000000000000000000',
++  '0000000000000000000',
++  '00000000000000000000',
++  '000000000000000000000',
++  '0000000000000000000000',
++  '00000000000000000000000',
++  '000000000000000000000000',
++  '0000000000000000000000000'
++];
+ 
+-  up = [].slice.call(up, 0, 3)
+-  normalize3(up, up)
++var groupSizes = [
++  0, 0,
++  25, 16, 12, 11, 10, 9, 8,
++  8, 7, 7, 7, 7, 6, 6,
++  6, 6, 6, 6, 6, 5, 5,
++  5, 5, 5, 5, 5, 5, 5,
++  5, 5, 5, 5, 5, 5, 5
++];
+ 
+-  right = [].slice.call(right, 0, 3)
+-  normalize3(right, right)
++var groupBases = [
++  0, 0,
++  33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
++  43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
++  16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
++  6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
++  24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
++];
+ 
+-  if('eye' in options) {
+-    var eye = options.eye
+-    var toward = [
+-      eye[0]-center[0],
+-      eye[1]-center[1],
+-      eye[2]-center[2]
+-    ]
+-    cross(right, toward, up)
+-    if(len3(right[0], right[1], right[2]) < 1e-6) {
+-      right = findOrthoPair(up)
+-    } else {
+-      normalize3(right, right)
++BN.prototype.toString = function toString(base, padding) {
++  base = base || 10;
++  if (base === 16 || base === 'hex') {
++    var out = '';
++    var off = 0;
++    var padding = padding | 0 || 1;
++    var carry = 0;
++    for (var i = 0; i < this.length; i++) {
++      var w = this.words[i];
++      var word = (((w << off) | carry) & 0xffffff).toString(16);
++      carry = (w >>> (24 - off)) & 0xffffff;
++      if (carry !== 0 || i !== this.length - 1)
++        out = zeros[6 - word.length] + word + out;
++      else
++        out = word + out;
++      off += 2;
++      if (off >= 26) {
++        off -= 26;
++        i--;
++      }
+     }
++    if (carry !== 0)
++      out = carry.toString(16) + out;
++    while (out.length % padding !== 0)
++      out = '0' + out;
++    if (this.sign)
++      out = '-' + out;
++    return out;
++  } else if (base === (base | 0) && base >= 2 && base <= 36) {
++    // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
++    var groupSize = groupSizes[base];
++    // var groupBase = Math.pow(base, groupSize);
++    var groupBase = groupBases[base];
++    var out = '';
++    var c = this.clone();
++    c.sign = false;
++    while (c.cmpn(0) !== 0) {
++      var r = c.modn(groupBase).toString(base);
++      c = c.idivn(groupBase);
+ 
+-    radius = len3(toward[0], toward[1], toward[2])
+-
+-    var ut = dot3(up, toward) / radius
+-    var rt = dot3(right, toward) / radius
+-    phi    = Math.acos(ut)
+-    theta  = Math.acos(rt)
++      if (c.cmpn(0) !== 0)
++        out = zeros[groupSize - r.length] + r + out;
++      else
++        out = r + out;
++    }
++    if (this.cmpn(0) === 0)
++      out = '0' + out;
++    if (this.sign)
++      out = '-' + out;
++    return out;
++  } else {
++    assert(false, 'Base should be between 2 and 36');
+   }
++};
+ 
+-  //Use logarithmic coordinates for radius
+-  radius = Math.log(radius)
+-
+-  //Return the controller
+-  return new TurntableController(
+-    options.zoomMin,
+-    options.zoomMax,
+-    center,
+-    up,
+-    right,
+-    radius,
+-    theta,
+-    phi)
+-}
+-},{"filtered-vector":8,"gl-mat4/invert":120,"gl-mat4/rotate":124,"gl-vec3/cross":11,"gl-vec3/dot":12,"gl-vec3/normalize":15}],27:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = createViewController
+-
+-var createTurntable = require('turntable-camera-controller')
+-var createOrbit     = require('orbit-camera-controller')
+-var createMatrix    = require('matrix-camera-controller')
++BN.prototype.toJSON = function toJSON() {
++  return this.toString(16);
++};
+ 
+-function ViewController(controllers, mode) {
+-  this._controllerNames = Object.keys(controllers)
+-  this._controllerList = this._controllerNames.map(function(n) {
+-    return controllers[n]
+-  })
+-  this._mode   = mode
+-  this._active = controllers[mode]
+-  if(!this._active) {
+-    this._mode   = 'turntable'
+-    this._active = controllers.turntable
+-  }
+-  this.modes = this._controllerNames
+-  this.computedMatrix = this._active.computedMatrix
+-  this.computedEye    = this._active.computedEye
+-  this.computedUp     = this._active.computedUp
+-  this.computedCenter = this._active.computedCenter
+-  this.computedRadius = this._active.computedRadius
+-}
++BN.prototype.toArray = function toArray(endian) {
++  this.strip();
++  var res = new Array(this.byteLength());
++  res[0] = 0;
+ 
+-var proto = ViewController.prototype
++  var q = this.clone();
++  if (endian !== 'le') {
++    // Assume big-endian
++    for (var i = 0; q.cmpn(0) !== 0; i++) {
++      var b = q.andln(0xff);
++      q.ishrn(8);
+ 
+-var COMMON_METHODS = [
+-  ['flush', 1],
+-  ['idle', 1],
+-  ['lookAt', 4],
+-  ['rotate', 4],
+-  ['pan', 4],
+-  ['translate', 4],
+-  ['setMatrix', 2],
+-  ['setDistanceLimits', 2],
+-  ['setDistance', 2]
+-]
++      res[res.length - i - 1] = b;
++    }
++  } else {
++    // Assume little-endian
++    for (var i = 0; q.cmpn(0) !== 0; i++) {
++      var b = q.andln(0xff);
++      q.ishrn(8);
+ 
+-COMMON_METHODS.forEach(function(method) {
+-  var name = method[0]
+-  var argNames = []
+-  for(var i=0; i<method[1]; ++i) {
+-    argNames.push('a'+i)
++      res[i] = b;
++    }
+   }
+-  var code = 'var cc=this._controllerList;for(var i=0;i<cc.length;++i){cc[i].'+method[0]+'('+argNames.join()+')}'
+-  proto[name] = Function.apply(null, argNames.concat(code))
+-})
+ 
+-proto.recalcMatrix = function(t) {
+-  this._active.recalcMatrix(t)
+-}
++  return res;
++};
+ 
+-proto.getDistance = function(t) {
+-  return this._active.getDistance(t)
+-}
+-proto.getDistanceLimits = function(out) {
+-  return this._active.getDistanceLimits(out)
++if (Math.clz32) {
++  BN.prototype._countBits = function _countBits(w) {
++    return 32 - Math.clz32(w);
++  };
++} else {
++  BN.prototype._countBits = function _countBits(w) {
++    var t = w;
++    var r = 0;
++    if (t >= 0x1000) {
++      r += 13;
++      t >>>= 13;
++    }
++    if (t >= 0x40) {
++      r += 7;
++      t >>>= 7;
++    }
++    if (t >= 0x8) {
++      r += 4;
++      t >>>= 4;
++    }
++    if (t >= 0x02) {
++      r += 2;
++      t >>>= 2;
++    }
++    return r + t;
++  };
+ }
+ 
+-proto.lastT = function() {
+-  return this._active.lastT()
+-}
++BN.prototype._zeroBits = function _zeroBits(w) {
++  // Short-cut
++  if (w === 0)
++    return 26;
+ 
+-proto.setMode = function(mode) {
+-  if(mode === this._mode) {
+-    return
++  var t = w;
++  var r = 0;
++  if ((t & 0x1fff) === 0) {
++    r += 13;
++    t >>>= 13;
+   }
+-  var idx = this._controllerNames.indexOf(mode)
+-  if(idx < 0) {
+-    return
++  if ((t & 0x7f) === 0) {
++    r += 7;
++    t >>>= 7;
+   }
+-  var prev  = this._active
+-  var next  = this._controllerList[idx]
+-  var lastT = Math.max(prev.lastT(), next.lastT())
+-
+-  prev.recalcMatrix(lastT)
+-  next.setMatrix(lastT, prev.computedMatrix)
+-  
+-  this._active = next
+-  this._mode   = mode
+-
+-  //Update matrix properties
+-  this.computedMatrix = this._active.computedMatrix
+-  this.computedEye    = this._active.computedEye
+-  this.computedUp     = this._active.computedUp
+-  this.computedCenter = this._active.computedCenter
+-  this.computedRadius = this._active.computedRadius
+-}
+-
+-proto.getMode = function() {
+-  return this._mode
+-}
+-
+-function createViewController(options) {
+-  options = options || {}
+-
+-  var eye       = options.eye    || [0,0,1]
+-  var center    = options.center || [0,0,0]
+-  var up        = options.up     || [0,1,0]
+-  var limits    = options.distanceLimits || [0, Infinity]
+-  var mode      = options.mode   || 'turntable'
++  if ((t & 0xf) === 0) {
++    r += 4;
++    t >>>= 4;
++  }
++  if ((t & 0x3) === 0) {
++    r += 2;
++    t >>>= 2;
++  }
++  if ((t & 0x1) === 0)
++    r++;
++  return r;
++};
+ 
+-  var turntable = createTurntable()
+-  var orbit     = createOrbit()
+-  var matrix    = createMatrix()
++// Return number of used bits in a BN
++BN.prototype.bitLength = function bitLength() {
++  var hi = 0;
++  var w = this.words[this.length - 1];
++  var hi = this._countBits(w);
++  return (this.length - 1) * 26 + hi;
++};
+ 
+-  turntable.setDistanceLimits(limits[0], limits[1])
+-  turntable.lookAt(0, eye, center, up)
+-  orbit.setDistanceLimits(limits[0], limits[1])
+-  orbit.lookAt(0, eye, center, up)
+-  matrix.setDistanceLimits(limits[0], limits[1])
+-  matrix.lookAt(0, eye, center, up)
++// Number of trailing zero bits
++BN.prototype.zeroBits = function zeroBits() {
++  if (this.cmpn(0) === 0)
++    return 0;
+ 
+-  return new ViewController({
+-    turntable: turntable,
+-    orbit: orbit,
+-    matrix: matrix
+-  }, mode)
+-}
+-},{"matrix-camera-controller":16,"orbit-camera-controller":25,"turntable-camera-controller":26}],28:[function(require,module,exports){
+-module.exports = alphaShape
++  var r = 0;
++  for (var i = 0; i < this.length; i++) {
++    var b = this._zeroBits(this.words[i]);
++    r += b;
++    if (b !== 26)
++      break;
++  }
++  return r;
++};
+ 
+-var ac = require('alpha-complex')
+-var bnd = require('simplicial-complex-boundary')
++BN.prototype.byteLength = function byteLength() {
++  return Math.ceil(this.bitLength() / 8);
++};
+ 
+-function alphaShape(alpha, points) {
+-  return bnd(ac(alpha, points))
+-}
+-},{"alpha-complex":29,"simplicial-complex-boundary":32}],29:[function(require,module,exports){
+-'use strict'
++// Return negative clone of `this`
++BN.prototype.neg = function neg() {
++  if (this.cmpn(0) === 0)
++    return this.clone();
+ 
+-module.exports = alphaComplex
++  var r = this.clone();
++  r.sign = !this.sign;
++  return r;
++};
+ 
+-var delaunay = require('delaunay-triangulate')
+-var circumradius = require('circumradius')
+ 
+-function alphaComplex(alpha, points) {
+-  return delaunay(points).filter(function(cell) {
+-    var simplex = new Array(cell.length)
+-    for(var i=0; i<cell.length; ++i) {
+-      simplex[i] = points[cell[i]]
+-    }
+-    return circumradius(simplex) * alpha < 1
+-  })
+-}
+-},{"circumradius":30,"delaunay-triangulate":101}],30:[function(require,module,exports){
+-module.exports = circumradius
++// Or `num` with `this` in-place
++BN.prototype.ior = function ior(num) {
++  this.sign = this.sign || num.sign;
+ 
+-var circumcenter = require('circumcenter')
++  while (this.length < num.length)
++    this.words[this.length++] = 0;
+ 
+-function circumradius(points) {
+-  var center = circumcenter(points)
+-  var avgDist = 0.0
+-  for(var i=0; i<points.length; ++i) {
+-    var p = points[i]
+-    for(var j=0; j<center.length; ++j) {
+-      avgDist += Math.pow(p[j] - center[j], 2)
+-    }
+-  }
+-  return Math.sqrt(avgDist / points.length)
+-}
+-},{"circumcenter":31}],31:[function(require,module,exports){
+-"use strict"
++  for (var i = 0; i < num.length; i++)
++    this.words[i] = this.words[i] | num.words[i];
+ 
+-var dup = require("dup")
+-var solve = require("robust-linear-solve")
++  return this.strip();
++};
+ 
+-function dot(a, b) {
+-  var s = 0.0
+-  var d = a.length
+-  for(var i=0; i<d; ++i) {
+-    s += a[i] * b[i]
+-  }
+-  return s
+-}
+ 
+-function barycentricCircumcenter(points) {
+-  var N = points.length
+-  if(N === 0) {
+-    return []
+-  }
+-  
+-  var D = points[0].length
+-  var A = dup([points.length+1, points.length+1], 1.0)
+-  var b = dup([points.length+1], 1.0)
+-  A[N][N] = 0.0
+-  for(var i=0; i<N; ++i) {
+-    for(var j=0; j<=i; ++j) {
+-      A[j][i] = A[i][j] = 2.0 * dot(points[i], points[j])
+-    }
+-    b[i] = dot(points[i], points[i])
+-  }
+-  var x = solve(A, b)
++// Or `num` with `this`
++BN.prototype.or = function or(num) {
++  if (this.length > num.length)
++    return this.clone().ior(num);
++  else
++    return num.clone().ior(this);
++};
+ 
+-  var denom = 0.0
+-  var h = x[N+1]
+-  for(var i=0; i<h.length; ++i) {
+-    denom += h[i]
+-  }
+ 
+-  var y = new Array(N)
+-  for(var i=0; i<N; ++i) {
+-    var h = x[i]
+-    var numer = 0.0
+-    for(var j=0; j<h.length; ++j) {
+-      numer += h[j]
+-    }
+-    y[i] =  numer / denom
+-  }
++// And `num` with `this` in-place
++BN.prototype.iand = function iand(num) {
++  this.sign = this.sign && num.sign;
+ 
+-  return y
+-}
++  // b = min-length(num, this)
++  var b;
++  if (this.length > num.length)
++    b = num;
++  else
++    b = this;
+ 
+-function circumcenter(points) {
+-  if(points.length === 0) {
+-    return []
+-  }
+-  var D = points[0].length
+-  var result = dup([D])
+-  var weights = barycentricCircumcenter(points)
+-  for(var i=0; i<points.length; ++i) {
+-    for(var j=0; j<D; ++j) {
+-      result[j] += points[i][j] * weights[i]
+-    }
+-  }
+-  return result
+-}
++  for (var i = 0; i < b.length; i++)
++    this.words[i] = this.words[i] & num.words[i];
+ 
+-circumcenter.barycenetric = barycentricCircumcenter
+-module.exports = circumcenter
+-},{"dup":102,"robust-linear-solve":222}],32:[function(require,module,exports){
+-'use strict'
++  this.length = b.length;
+ 
+-module.exports = boundary
++  return this.strip();
++};
+ 
+-var bnd = require('boundary-cells')
+-var reduce = require('reduce-simplicial-complex')
+ 
+-function boundary(cells) {
+-  return reduce(bnd(cells))
+-}
++// And `num` with `this`
++BN.prototype.and = function and(num) {
++  if (this.length > num.length)
++    return this.clone().iand(num);
++  else
++    return num.clone().iand(this);
++};
+ 
+-},{"boundary-cells":33,"reduce-simplicial-complex":36}],33:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = boundary
++// Xor `num` with `this` in-place
++BN.prototype.ixor = function ixor(num) {
++  this.sign = this.sign || num.sign;
+ 
+-function boundary(cells) {
+-  var n = cells.length
+-  var sz = 0
+-  for(var i=0; i<n; ++i) {
+-    sz += cells[i].length
+-  }
+-  var result = new Array(sz)
+-  var ptr = 0
+-  for(var i=0; i<n; ++i) {
+-    var c = cells[i]
+-    var d = c.length
+-    for(var j=0; j<d; ++j) {
+-      var b = result[ptr++] = new Array(d-1)
+-      for(var k=1; k<d; ++k) {
+-        b[k-1] = c[(j+k)%d]
+-      }
+-    }
++  // a.length > b.length
++  var a;
++  var b;
++  if (this.length > num.length) {
++    a = this;
++    b = num;
++  } else {
++    a = num;
++    b = this;
+   }
+-  return result
+-}
+-
+-},{}],34:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = orientation
++  for (var i = 0; i < b.length; i++)
++    this.words[i] = a.words[i] ^ b.words[i];
+ 
+-function orientation(s) {
+-  var p = 1
+-  for(var i=1; i<s.length; ++i) {
+-    for(var j=0; j<i; ++j) {
+-      if(s[i] < s[j]) {
+-        p = -p
+-      } else if(s[j] === s[i]) {
+-        return 0
+-      }
+-    }
+-  }
+-  return p
+-}
++  if (this !== a)
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
+ 
+-},{}],35:[function(require,module,exports){
+-'use strict'
++  this.length = a.length;
+ 
+-var compareCells = require('compare-cell')
+-var parity = require('cell-orientation')
++  return this.strip();
++};
+ 
+-module.exports = compareOrientedCells
+ 
+-function compareOrientedCells(a, b) {
+-  return compareCells(a, b) || parity(a) - parity(b)
+-}
++// Xor `num` with `this`
++BN.prototype.xor = function xor(num) {
++  if (this.length > num.length)
++    return this.clone().ixor(num);
++  else
++    return num.clone().ixor(this);
++};
+ 
+-},{"cell-orientation":34,"compare-cell":89}],36:[function(require,module,exports){
+-'use strict'
+ 
+-var compareCell = require('compare-cell')
+-var compareOrientedCell = require('compare-oriented-cell')
+-var orientation = require('cell-orientation')
++// Set `bit` of `this`
++BN.prototype.setn = function setn(bit, val) {
++  assert(typeof bit === 'number' && bit >= 0);
+ 
+-module.exports = reduceCellComplex
++  var off = (bit / 26) | 0;
++  var wbit = bit % 26;
+ 
+-function reduceCellComplex(cells) {
+-  cells.sort(compareOrientedCell)
+-  var n = cells.length
+-  var ptr = 0
+-  for(var i=0; i<n; ++i) {
+-    var c = cells[i]
+-    var o = orientation(c)
+-    if(o === 0) {
+-      continue
+-    }
+-    if(ptr > 0) {
+-      var f = cells[ptr-1]
+-      if(compareCell(c, f) === 0 &&
+-         orientation(f)    !== o) {
+-        ptr -= 1
+-        continue
+-      }
+-    }
+-    cells[ptr++] = c
+-  }
+-  cells.length = ptr
+-  return cells
+-}
++  while (this.length <= off)
++    this.words[this.length++] = 0;
+ 
+-},{"cell-orientation":34,"compare-cell":89,"compare-oriented-cell":35}],37:[function(require,module,exports){
+-'use strict';
++  if (val)
++    this.words[off] = this.words[off] | (1 << wbit);
++  else
++    this.words[off] = this.words[off] & ~(1 << wbit);
+ 
+-var arraytools  = function () {
++  return this.strip();
++};
+ 
+-  var that = {};
+ 
+-  var RGB_REGEX =  /^rgba?\(\s*\d{1,3}\s*,\s*\d{1,3}\s*,\s*\d{1,3}\s*(,.*)?\)$/;
+-  var RGB_GROUP_REGEX = /^rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,?\s*(.*)?\)$/;
++// Add `num` to `this` in-place
++BN.prototype.iadd = function iadd(num) {
++  // negative + positive
++  if (this.sign && !num.sign) {
++    this.sign = false;
++    var r = this.isub(num);
++    this.sign = !this.sign;
++    return this._normSign();
+ 
+-  function isPlainObject (v) {
+-    return !Array.isArray(v) && v !== null && typeof v === 'object';
++  // positive + negative
++  } else if (!this.sign && num.sign) {
++    num.sign = false;
++    var r = this.isub(num);
++    num.sign = true;
++    return r._normSign();
+   }
+ 
+-  function linspace (start, end, num) {
+-    var inc = (end - start) / Math.max(num - 1, 1);
+-    var a = [];
+-    for( var ii = 0; ii < num; ii++)
+-      a.push(start + ii*inc);
+-    return a;
++  // a.length > b.length
++  var a;
++  var b;
++  if (this.length > num.length) {
++    a = this;
++    b = num;
++  } else {
++    a = num;
++    b = this;
+   }
+ 
+-  function zip () {
+-      var arrays = [].slice.call(arguments);
+-      var lengths = arrays.map(function (a) {return a.length;});
+-      var len = Math.min.apply(null, lengths);
+-      var zipped = [];
+-      for (var i = 0; i < len; i++) {
+-          zipped[i] = [];
+-          for (var j = 0; j < arrays.length; ++j) {
+-              zipped[i][j] = arrays[j][i];
+-          }
+-      }
+-      return zipped;
++  var carry = 0;
++  for (var i = 0; i < b.length; i++) {
++    var r = a.words[i] + b.words[i] + carry;
++    this.words[i] = r & 0x3ffffff;
++    carry = r >>> 26;
+   }
+-
+-  function zip3 (a, b, c) {
+-      var len = Math.min.apply(null, [a.length, b.length, c.length]);
+-      var result = [];
+-      for (var n = 0; n < len; n++) {
+-          result.push([a[n], b[n], c[n]]);
+-      }
+-      return result;
++  for (; carry !== 0 && i < a.length; i++) {
++    var r = a.words[i] + carry;
++    this.words[i] = r & 0x3ffffff;
++    carry = r >>> 26;
+   }
+ 
+-  function sum (A) {
+-    var acc = 0;
+-    accumulate(A, acc);
+-    function accumulate(x) {
+-      for (var i = 0; i < x.length; i++) {
+-        if (Array.isArray(x[i]))
+-          accumulate(x[i], acc);
+-        else
+-          acc += x[i];
+-      }
+-    }
+-    return acc;
++  this.length = a.length;
++  if (carry !== 0) {
++    this.words[this.length] = carry;
++    this.length++;
++  // Copy the rest of the words
++  } else if (a !== this) {
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
+   }
+ 
+-  function copy2D (arr) {
+-    var carr = [];
+-    for (var i = 0; i < arr.length; ++i) {
+-      carr[i] = [];
+-      for (var j = 0; j < arr[i].length; ++j) {
+-        carr[i][j] = arr[i][j];
+-      }
+-    }
++  return this;
++};
+ 
+-    return carr;
++// Add `num` to `this`
++BN.prototype.add = function add(num) {
++  if (num.sign && !this.sign) {
++    num.sign = false;
++    var res = this.sub(num);
++    num.sign = true;
++    return res;
++  } else if (!num.sign && this.sign) {
++    this.sign = false;
++    var res = num.sub(this);
++    this.sign = true;
++    return res;
+   }
+ 
++  if (this.length > num.length)
++    return this.clone().iadd(num);
++  else
++    return num.clone().iadd(this);
++};
+ 
+-  function copy1D (arr) {
+-    var carr = [];
+-    for (var i = 0; i < arr.length; ++i) {
+-      carr[i] = arr[i];
+-    }
++// Subtract `num` from `this` in-place
++BN.prototype.isub = function isub(num) {
++  // this - (-num) = this + num
++  if (num.sign) {
++    num.sign = false;
++    var r = this.iadd(num);
++    num.sign = true;
++    return r._normSign();
+ 
+-    return carr;
++  // -this - num = -(this + num)
++  } else if (this.sign) {
++    this.sign = false;
++    this.iadd(num);
++    this.sign = true;
++    return this._normSign();
+   }
+ 
++  // At this point both numbers are positive
++  var cmp = this.cmp(num);
+ 
+-  function isEqual(arr1, arr2) {
+-    if(arr1.length !== arr2.length)
+-      return false;
+-    for(var i = arr1.length; i--;) {
+-      if(arr1[i] !== arr2[i])
+-        return false;
+-    }
++  // Optimization - zeroify
++  if (cmp === 0) {
++    this.sign = false;
++    this.length = 1;
++    this.words[0] = 0;
++    return this;
++  }
+ 
+-    return true;
++  // a > b
++  var a;
++  var b;
++  if (cmp > 0) {
++    a = this;
++    b = num;
++  } else {
++    a = num;
++    b = this;
+   }
+ 
++  var carry = 0;
++  for (var i = 0; i < b.length; i++) {
++    var r = a.words[i] - b.words[i] + carry;
++    carry = r >> 26;
++    this.words[i] = r & 0x3ffffff;
++  }
++  for (; carry !== 0 && i < a.length; i++) {
++    var r = a.words[i] + carry;
++    carry = r >> 26;
++    this.words[i] = r & 0x3ffffff;
++  }
+ 
+-  function str2RgbArray(str, twoFiftySix) {
+-    // convert hex or rbg strings to 0->1 or 0->255 rgb array
+-    var rgb,
+-        match;
++  // Copy rest of the words
++  if (carry === 0 && i < a.length && a !== this)
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
++  this.length = Math.max(this.length, i);
+ 
+-    if (typeof str !== 'string') return str;
++  if (a !== this)
++    this.sign = true;
+ 
+-    rgb = [];
+-    // hex notation
+-    if (str[0] === '#') {
+-      str = str.substr(1) // remove hash
+-      if (str.length === 3) str += str // fff -> ffffff
+-      match = parseInt(str, 16);
+-      rgb[0] = ((match >> 16) & 255);
+-      rgb[1] = ((match >> 8) & 255);
+-      rgb[2] = (match & 255);
+-    }
++  return this.strip();
++};
+ 
+-    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
+-    else if (RGB_REGEX.test(str)) {
+-      match = str.match(RGB_GROUP_REGEX);
+-      rgb[0] = parseInt(match[1]);
+-      rgb[1] = parseInt(match[2]);
+-      rgb[2] = parseInt(match[3]);
+-    }
++// Subtract `num` from `this`
++BN.prototype.sub = function sub(num) {
++  return this.clone().isub(num);
++};
+ 
+-    if (!twoFiftySix) {
+-      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
+-    }
++/*
++// NOTE: This could be potentionally used to generate loop-less multiplications
++function _genCombMulTo(alen, blen) {
++  var len = alen + blen - 1;
++  var src = [
++    'var a = this.words, b = num.words, o = out.words, c = 0, w, ' +
++        'mask = 0x3ffffff, shift = 0x4000000;',
++    'out.length = ' + len + ';'
++  ];
++  for (var k = 0; k < len; k++) {
++    var minJ = Math.max(0, k - alen + 1);
++    var maxJ = Math.min(k, blen - 1);
+ 
++    for (var j = minJ; j <= maxJ; j++) {
++      var i = k - j;
++      var mul = 'a[' + i + '] * b[' + j + ']';
+ 
+-    return rgb;
++      if (j === minJ) {
++        src.push('w = ' + mul + ' + c;');
++        src.push('c = (w / shift) | 0;');
++      } else {
++        src.push('w += ' + mul + ';');
++        src.push('c += (w / shift) | 0;');
++      }
++      src.push('w &= mask;');
++    }
++    src.push('o[' + k + '] = w;');
+   }
++  src.push('if (c !== 0) {',
++           '  o[' + k + '] = c;',
++           '  out.length++;',
++           '}',
++           'return out;');
+ 
++  return src.join('\n');
++}
++*/
+ 
+-  function str2RgbaArray(str, twoFiftySix) {
+-    // convert hex or rbg strings to 0->1 or 0->255 rgb array
+-    var rgb,
+-        match;
++BN.prototype._smallMulTo = function _smallMulTo(num, out) {
++  out.sign = num.sign !== this.sign;
++  out.length = this.length + num.length;
+ 
+-    if (typeof str !== 'string') return str;
++  var carry = 0;
++  for (var k = 0; k < out.length - 1; k++) {
++    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
++    // note that ncarry could be >= 0x3ffffff
++    var ncarry = carry >>> 26;
++    var rword = carry & 0x3ffffff;
++    var maxJ = Math.min(k, num.length - 1);
++    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i] | 0;
++      var b = num.words[j] | 0;
++      var r = a * b;
+ 
+-    rgb = [];
+-    // hex notation
+-    if (str[0] === '#') {
+-      str = str.substr(1) // remove hash
+-      if (str.length === 3) str += str // fff -> ffffff
+-      match = parseInt(str, 16);
+-      rgb[0] = ((match >> 16) & 255);
+-      rgb[1] = ((match >> 8) & 255);
+-      rgb[2] = (match & 255);
++      var lo = r & 0x3ffffff;
++      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
++      lo = (lo + rword) | 0;
++      rword = lo & 0x3ffffff;
++      ncarry = (ncarry + (lo >>> 26)) | 0;
+     }
++    out.words[k] = rword;
++    carry = ncarry;
++  }
++  if (carry !== 0) {
++    out.words[k] = carry;
++  } else {
++    out.length--;
++  }
+ 
+-    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
+-    else if (RGB_REGEX.test(str)) {
+-      match = str.match(RGB_GROUP_REGEX);
+-      rgb[0] = parseInt(match[1]);
+-      rgb[1] = parseInt(match[2]);
+-      rgb[2] = parseInt(match[3]);
+-      if (match[4]) rgb[3] = parseFloat(match[4]);
+-      else rgb[3] = 1.0;
+-    }
++  return out.strip();
++};
++
++BN.prototype._bigMulTo = function _bigMulTo(num, out) {
++  out.sign = num.sign !== this.sign;
++  out.length = this.length + num.length;
+ 
++  var carry = 0;
++  var hncarry = 0;
++  for (var k = 0; k < out.length - 1; k++) {
++    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
++    // note that ncarry could be >= 0x3ffffff
++    var ncarry = hncarry;
++    hncarry = 0;
++    var rword = carry & 0x3ffffff;
++    var maxJ = Math.min(k, num.length - 1);
++    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i] | 0;
++      var b = num.words[j] | 0;
++      var r = a * b;
+ 
++      var lo = r & 0x3ffffff;
++      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
++      lo = (lo + rword) | 0;
++      rword = lo & 0x3ffffff;
++      ncarry = (ncarry + (lo >>> 26)) | 0;
+ 
+-    if (!twoFiftySix) {
+-      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
++      hncarry += ncarry >>> 26;
++      ncarry &= 0x3ffffff;
+     }
++    out.words[k] = rword;
++    carry = ncarry;
++    ncarry = hncarry;
++  }
++  if (carry !== 0) {
++    out.words[k] = carry;
++  } else {
++    out.length--;
++  }
+ 
++  return out.strip();
++};
+ 
+-    return rgb;
+-  }
++BN.prototype.mulTo = function mulTo(num, out) {
++  var res;
++  if (this.length + num.length < 63)
++    res = this._smallMulTo(num, out);
++  else
++    res = this._bigMulTo(num, out);
++  return res;
++};
+ 
++// Multiply `this` by `num`
++BN.prototype.mul = function mul(num) {
++  var out = new BN(null);
++  out.words = new Array(this.length + num.length);
++  return this.mulTo(num, out);
++};
+ 
++// In-place Multiplication
++BN.prototype.imul = function imul(num) {
++  if (this.cmpn(0) === 0 || num.cmpn(0) === 0) {
++    this.words[0] = 0;
++    this.length = 1;
++    return this;
++  }
+ 
++  var tlen = this.length;
++  var nlen = num.length;
+ 
++  this.sign = num.sign !== this.sign;
++  this.length = this.length + num.length;
++  this.words[this.length - 1] = 0;
+ 
+-  that.isPlainObject = isPlainObject;
+-  that.linspace = linspace;
+-  that.zip3 = zip3;
+-  that.sum = sum;
+-  that.zip = zip;
+-  that.isEqual = isEqual;
+-  that.copy2D = copy2D;
+-  that.copy1D = copy1D;
+-  that.str2RgbArray = str2RgbArray;
+-  that.str2RgbaArray = str2RgbaArray;
++  for (var k = this.length - 2; k >= 0; k--) {
++    // Sum all words with the same `i + j = k` and accumulate `carry`,
++    // note that carry could be >= 0x3ffffff
++    var carry = 0;
++    var rword = 0;
++    var maxJ = Math.min(k, nlen - 1);
++    for (var j = Math.max(0, k - tlen + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i];
++      var b = num.words[j];
++      var r = a * b;
+ 
+-  return that
++      var lo = r & 0x3ffffff;
++      carry += (r / 0x4000000) | 0;
++      lo += rword;
++      rword = lo & 0x3ffffff;
++      carry += lo >>> 26;
++    }
++    this.words[k] = rword;
++    this.words[k + 1] += carry;
++    carry = 0;
++  }
+ 
+-}
++  // Propagate overflows
++  var carry = 0;
++  for (var i = 1; i < this.length; i++) {
++    var w = this.words[i] + carry;
++    this.words[i] = w & 0x3ffffff;
++    carry = w >>> 26;
++  }
+ 
++  return this.strip();
++};
+ 
+-module.exports = arraytools();
++BN.prototype.imuln = function imuln(num) {
++  assert(typeof num === 'number');
+ 
+-},{}],38:[function(require,module,exports){
+-/**
+- * Bit twiddling hacks for JavaScript.
+- *
+- * Author: Mikola Lysenko
+- *
+- * Ported from Stanford bit twiddling hack library:
+- *    http://graphics.stanford.edu/~seander/bithacks.html
+- */
++  // Carry
++  var carry = 0;
++  for (var i = 0; i < this.length; i++) {
++    var w = this.words[i] * num;
++    var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
++    carry >>= 26;
++    carry += (w / 0x4000000) | 0;
++    // NOTE: lo is 27bit maximum
++    carry += lo >>> 26;
++    this.words[i] = lo & 0x3ffffff;
++  }
+ 
+-"use strict"; "use restrict";
++  if (carry !== 0) {
++    this.words[i] = carry;
++    this.length++;
++  }
+ 
+-//Number of bits in an integer
+-var INT_BITS = 32;
++  return this;
++};
+ 
+-//Constants
+-exports.INT_BITS  = INT_BITS;
+-exports.INT_MAX   =  0x7fffffff;
+-exports.INT_MIN   = -1<<(INT_BITS-1);
++BN.prototype.muln = function muln(num) {
++  return this.clone().imuln(num);
++};
+ 
+-//Returns -1, 0, +1 depending on sign of x
+-exports.sign = function(v) {
+-  return (v > 0) - (v < 0);
+-}
++// `this` * `this`
++BN.prototype.sqr = function sqr() {
++  return this.mul(this);
++};
+ 
+-//Computes absolute value of integer
+-exports.abs = function(v) {
+-  var mask = v >> (INT_BITS-1);
+-  return (v ^ mask) - mask;
+-}
++// `this` * `this` in-place
++BN.prototype.isqr = function isqr() {
++  return this.mul(this);
++};
+ 
+-//Computes minimum of integers x and y
+-exports.min = function(x, y) {
+-  return y ^ ((x ^ y) & -(x < y));
+-}
++// Shift-left in-place
++BN.prototype.ishln = function ishln(bits) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var r = bits % 26;
++  var s = (bits - r) / 26;
++  var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
+ 
+-//Computes maximum of integers x and y
+-exports.max = function(x, y) {
+-  return x ^ ((x ^ y) & -(x < y));
+-}
++  if (r !== 0) {
++    var carry = 0;
++    for (var i = 0; i < this.length; i++) {
++      var newCarry = this.words[i] & carryMask;
++      var c = (this.words[i] - newCarry) << r;
++      this.words[i] = c | carry;
++      carry = newCarry >>> (26 - r);
++    }
++    if (carry) {
++      this.words[i] = carry;
++      this.length++;
++    }
++  }
+ 
+-//Checks if a number is a power of two
+-exports.isPow2 = function(v) {
+-  return !(v & (v-1)) && (!!v);
+-}
++  if (s !== 0) {
++    for (var i = this.length - 1; i >= 0; i--)
++      this.words[i + s] = this.words[i];
++    for (var i = 0; i < s; i++)
++      this.words[i] = 0;
++    this.length += s;
++  }
+ 
+-//Computes log base 2 of v
+-exports.log2 = function(v) {
+-  var r, shift;
+-  r =     (v > 0xFFFF) << 4; v >>>= r;
+-  shift = (v > 0xFF  ) << 3; v >>>= shift; r |= shift;
+-  shift = (v > 0xF   ) << 2; v >>>= shift; r |= shift;
+-  shift = (v > 0x3   ) << 1; v >>>= shift; r |= shift;
+-  return r | (v >> 1);
+-}
++  return this.strip();
++};
+ 
+-//Computes log base 10 of v
+-exports.log10 = function(v) {
+-  return  (v >= 1000000000) ? 9 : (v >= 100000000) ? 8 : (v >= 10000000) ? 7 :
+-          (v >= 1000000) ? 6 : (v >= 100000) ? 5 : (v >= 10000) ? 4 :
+-          (v >= 1000) ? 3 : (v >= 100) ? 2 : (v >= 10) ? 1 : 0;
+-}
++// Shift-right in-place
++// NOTE: `hint` is a lowest bit before trailing zeroes
++// NOTE: if `extended` is present - it will be filled with destroyed bits
++BN.prototype.ishrn = function ishrn(bits, hint, extended) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var h;
++  if (hint)
++    h = (hint - (hint % 26)) / 26;
++  else
++    h = 0;
+ 
+-//Counts number of bits
+-exports.popCount = function(v) {
+-  v = v - ((v >>> 1) & 0x55555555);
+-  v = (v & 0x33333333) + ((v >>> 2) & 0x33333333);
+-  return ((v + (v >>> 4) & 0xF0F0F0F) * 0x1010101) >>> 24;
+-}
++  var r = bits % 26;
++  var s = Math.min((bits - r) / 26, this.length);
++  var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
++  var maskedWords = extended;
+ 
+-//Counts number of trailing zeros
+-function countTrailingZeros(v) {
+-  var c = 32;
+-  v &= -v;
+-  if (v) c--;
+-  if (v & 0x0000FFFF) c -= 16;
+-  if (v & 0x00FF00FF) c -= 8;
+-  if (v & 0x0F0F0F0F) c -= 4;
+-  if (v & 0x33333333) c -= 2;
+-  if (v & 0x55555555) c -= 1;
+-  return c;
+-}
+-exports.countTrailingZeros = countTrailingZeros;
++  h -= s;
++  h = Math.max(0, h);
+ 
+-//Rounds to next power of 2
+-exports.nextPow2 = function(v) {
+-  v += v === 0;
+-  --v;
+-  v |= v >>> 1;
+-  v |= v >>> 2;
+-  v |= v >>> 4;
+-  v |= v >>> 8;
+-  v |= v >>> 16;
+-  return v + 1;
+-}
+-
+-//Rounds down to previous power of 2
+-exports.prevPow2 = function(v) {
+-  v |= v >>> 1;
+-  v |= v >>> 2;
+-  v |= v >>> 4;
+-  v |= v >>> 8;
+-  v |= v >>> 16;
+-  return v - (v>>>1);
+-}
+-
+-//Computes parity of word
+-exports.parity = function(v) {
+-  v ^= v >>> 16;
+-  v ^= v >>> 8;
+-  v ^= v >>> 4;
+-  v &= 0xf;
+-  return (0x6996 >>> v) & 1;
+-}
++  // Extended mode, copy masked part
++  if (maskedWords) {
++    for (var i = 0; i < s; i++)
++      maskedWords.words[i] = this.words[i];
++    maskedWords.length = s;
++  }
+ 
+-var REVERSE_TABLE = new Array(256);
++  if (s === 0) {
++    // No-op, we should not move anything at all
++  } else if (this.length > s) {
++    this.length -= s;
++    for (var i = 0; i < this.length; i++)
++      this.words[i] = this.words[i + s];
++  } else {
++    this.words[0] = 0;
++    this.length = 1;
++  }
+ 
+-(function(tab) {
+-  for(var i=0; i<256; ++i) {
+-    var v = i, r = i, s = 7;
+-    for (v >>>= 1; v; v >>>= 1) {
+-      r <<= 1;
+-      r |= v & 1;
+-      --s;
+-    }
+-    tab[i] = (r << s) & 0xff;
++  var carry = 0;
++  for (var i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
++    var word = this.words[i];
++    this.words[i] = (carry << (26 - r)) | (word >>> r);
++    carry = word & mask;
+   }
+-})(REVERSE_TABLE);
+ 
+-//Reverse bits in a 32 bit word
+-exports.reverse = function(v) {
+-  return  (REVERSE_TABLE[ v         & 0xff] << 24) |
+-          (REVERSE_TABLE[(v >>> 8)  & 0xff] << 16) |
+-          (REVERSE_TABLE[(v >>> 16) & 0xff] << 8)  |
+-           REVERSE_TABLE[(v >>> 24) & 0xff];
+-}
++  // Push carried bits as a mask
++  if (maskedWords && carry !== 0)
++    maskedWords.words[maskedWords.length++] = carry;
+ 
+-//Interleave bits of 2 coordinates with 16 bits.  Useful for fast quadtree codes
+-exports.interleave2 = function(x, y) {
+-  x &= 0xFFFF;
+-  x = (x | (x << 8)) & 0x00FF00FF;
+-  x = (x | (x << 4)) & 0x0F0F0F0F;
+-  x = (x | (x << 2)) & 0x33333333;
+-  x = (x | (x << 1)) & 0x55555555;
++  if (this.length === 0) {
++    this.words[0] = 0;
++    this.length = 1;
++  }
+ 
+-  y &= 0xFFFF;
+-  y = (y | (y << 8)) & 0x00FF00FF;
+-  y = (y | (y << 4)) & 0x0F0F0F0F;
+-  y = (y | (y << 2)) & 0x33333333;
+-  y = (y | (y << 1)) & 0x55555555;
++  this.strip();
+ 
+-  return x | (y << 1);
+-}
++  return this;
++};
+ 
+-//Extracts the nth interleaved component
+-exports.deinterleave2 = function(v, n) {
+-  v = (v >>> n) & 0x55555555;
+-  v = (v | (v >>> 1))  & 0x33333333;
+-  v = (v | (v >>> 2))  & 0x0F0F0F0F;
+-  v = (v | (v >>> 4))  & 0x00FF00FF;
+-  v = (v | (v >>> 16)) & 0x000FFFF;
+-  return (v << 16) >> 16;
+-}
++// Shift-left
++BN.prototype.shln = function shln(bits) {
++  return this.clone().ishln(bits);
++};
+ 
++// Shift-right
++BN.prototype.shrn = function shrn(bits) {
++  return this.clone().ishrn(bits);
++};
+ 
+-//Interleave bits of 3 coordinates, each with 10 bits.  Useful for fast octree codes
+-exports.interleave3 = function(x, y, z) {
+-  x &= 0x3FF;
+-  x  = (x | (x<<16)) & 4278190335;
+-  x  = (x | (x<<8))  & 251719695;
+-  x  = (x | (x<<4))  & 3272356035;
+-  x  = (x | (x<<2))  & 1227133513;
++// Test if n bit is set
++BN.prototype.testn = function testn(bit) {
++  assert(typeof bit === 'number' && bit >= 0);
++  var r = bit % 26;
++  var s = (bit - r) / 26;
++  var q = 1 << r;
+ 
+-  y &= 0x3FF;
+-  y  = (y | (y<<16)) & 4278190335;
+-  y  = (y | (y<<8))  & 251719695;
+-  y  = (y | (y<<4))  & 3272356035;
+-  y  = (y | (y<<2))  & 1227133513;
+-  x |= (y << 1);
+-  
+-  z &= 0x3FF;
+-  z  = (z | (z<<16)) & 4278190335;
+-  z  = (z | (z<<8))  & 251719695;
+-  z  = (z | (z<<4))  & 3272356035;
+-  z  = (z | (z<<2))  & 1227133513;
+-  
+-  return x | (z << 2);
+-}
++  // Fast case: bit is much higher than all existing words
++  if (this.length <= s) {
++    return false;
++  }
+ 
+-//Extracts nth interleaved component of a 3-tuple
+-exports.deinterleave3 = function(v, n) {
+-  v = (v >>> n)       & 1227133513;
+-  v = (v | (v>>>2))   & 3272356035;
+-  v = (v | (v>>>4))   & 251719695;
+-  v = (v | (v>>>8))   & 4278190335;
+-  v = (v | (v>>>16))  & 0x3FF;
+-  return (v<<22)>>22;
+-}
++  // Check bit and return
++  var w = this.words[s];
+ 
+-//Computes next combination in colexicographic order (this is mistakenly called nextPermutation on the bit twiddling hacks page)
+-exports.nextCombination = function(v) {
+-  var t = v | (v - 1);
+-  return (t + 1) | (((~t & -~t) - 1) >>> (countTrailingZeros(v) + 1));
+-}
++  return !!(w & q);
++};
+ 
++// Return only lowers bits of number (in-place)
++BN.prototype.imaskn = function imaskn(bits) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var r = bits % 26;
++  var s = (bits - r) / 26;
+ 
+-},{}],39:[function(require,module,exports){
+-(function (global){
+-/*!
+- * The buffer module from node.js, for the browser.
+- *
+- * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+- * @license  MIT
+- */
+-/* eslint-disable no-proto */
++  assert(!this.sign, 'imaskn works only with positive numbers');
+ 
+-'use strict'
++  if (r !== 0)
++    s++;
++  this.length = Math.min(s, this.length);
+ 
+-var base64 = require('base64-js')
+-var ieee754 = require('ieee754')
+-var isArray = require('isarray')
++  if (r !== 0) {
++    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
++    this.words[this.length - 1] &= mask;
++  }
+ 
+-exports.Buffer = Buffer
+-exports.SlowBuffer = SlowBuffer
+-exports.INSPECT_MAX_BYTES = 50
+-Buffer.poolSize = 8192 // not used by this implementation
++  return this.strip();
++};
+ 
+-var rootParent = {}
++// Return only lowers bits of number
++BN.prototype.maskn = function maskn(bits) {
++  return this.clone().imaskn(bits);
++};
+ 
+-/**
+- * If `Buffer.TYPED_ARRAY_SUPPORT`:
+- *   === true    Use Uint8Array implementation (fastest)
+- *   === false   Use Object implementation (most compatible, even IE6)
+- *
+- * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+- * Opera 11.6+, iOS 4.2+.
+- *
+- * Due to various browser bugs, sometimes the Object implementation will be used even
+- * when the browser supports typed arrays.
+- *
+- * Note:
+- *
+- *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
+- *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
+- *
+- *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
+- *
+- *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
+- *     incorrect length in some situations.
++// Add plain number `num` to `this`
++BN.prototype.iaddn = function iaddn(num) {
++  assert(typeof num === 'number');
++  if (num < 0)
++    return this.isubn(-num);
+ 
+- * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
+- * get the Object implementation, which is slower but behaves correctly.
+- */
+-Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
+-  ? global.TYPED_ARRAY_SUPPORT
+-  : typedArraySupport()
++  // Possible sign change
++  if (this.sign) {
++    if (this.length === 1 && this.words[0] < num) {
++      this.words[0] = num - this.words[0];
++      this.sign = false;
++      return this;
++    }
+ 
+-function typedArraySupport () {
+-  try {
+-    var arr = new Uint8Array(1)
+-    arr.foo = function () { return 42 }
+-    return arr.foo() === 42 && // typed array instances can be augmented
+-        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
+-        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
+-  } catch (e) {
+-    return false
++    this.sign = false;
++    this.isubn(num);
++    this.sign = true;
++    return this;
+   }
+-}
+ 
+-function kMaxLength () {
+-  return Buffer.TYPED_ARRAY_SUPPORT
+-    ? 0x7fffffff
+-    : 0x3fffffff
+-}
++  // Add without checks
++  return this._iaddn(num);
++};
+ 
+-/**
+- * The Buffer constructor returns instances of `Uint8Array` that have their
+- * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
+- * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
+- * and the `Uint8Array` methods. Square bracket notation works as expected -- it
+- * returns a single octet.
+- *
+- * The `Uint8Array` prototype remains unmodified.
+- */
+-function Buffer (arg) {
+-  if (!(this instanceof Buffer)) {
+-    // Avoid going through an ArgumentsAdaptorTrampoline in the common case.
+-    if (arguments.length > 1) return new Buffer(arg, arguments[1])
+-    return new Buffer(arg)
+-  }
++BN.prototype._iaddn = function _iaddn(num) {
++  this.words[0] += num;
+ 
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+-    this.length = 0
+-    this.parent = undefined
++  // Carry
++  for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
++    this.words[i] -= 0x4000000;
++    if (i === this.length - 1)
++      this.words[i + 1] = 1;
++    else
++      this.words[i + 1]++;
+   }
++  this.length = Math.max(this.length, i + 1);
+ 
+-  // Common case.
+-  if (typeof arg === 'number') {
+-    return fromNumber(this, arg)
+-  }
++  return this;
++};
+ 
+-  // Slightly less common case.
+-  if (typeof arg === 'string') {
+-    return fromString(this, arg, arguments.length > 1 ? arguments[1] : 'utf8')
+-  }
++// Subtract plain number `num` from `this`
++BN.prototype.isubn = function isubn(num) {
++  assert(typeof num === 'number');
++  if (num < 0)
++    return this.iaddn(-num);
+ 
+-  // Unusual.
+-  return fromObject(this, arg)
+-}
++  if (this.sign) {
++    this.sign = false;
++    this.iaddn(num);
++    this.sign = true;
++    return this;
++  }
+ 
+-// TODO: Legacy, not needed anymore. Remove in next major version.
+-Buffer._augment = function (arr) {
+-  arr.__proto__ = Buffer.prototype
+-  return arr
+-}
++  this.words[0] -= num;
+ 
+-function fromNumber (that, length) {
+-  that = allocate(that, length < 0 ? 0 : checked(length) | 0)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+-    for (var i = 0; i < length; i++) {
+-      that[i] = 0
+-    }
++  // Carry
++  for (var i = 0; i < this.length && this.words[i] < 0; i++) {
++    this.words[i] += 0x4000000;
++    this.words[i + 1] -= 1;
+   }
+-  return that
+-}
+ 
+-function fromString (that, string, encoding) {
+-  if (typeof encoding !== 'string' || encoding === '') encoding = 'utf8'
++  return this.strip();
++};
+ 
+-  // Assumption: byteLength() return value is always < kMaxLength.
+-  var length = byteLength(string, encoding) | 0
+-  that = allocate(that, length)
++BN.prototype.addn = function addn(num) {
++  return this.clone().iaddn(num);
++};
+ 
+-  that.write(string, encoding)
+-  return that
+-}
++BN.prototype.subn = function subn(num) {
++  return this.clone().isubn(num);
++};
+ 
+-function fromObject (that, object) {
+-  if (Buffer.isBuffer(object)) return fromBuffer(that, object)
++BN.prototype.iabs = function iabs() {
++  this.sign = false;
+ 
+-  if (isArray(object)) return fromArray(that, object)
++  return this;
++};
+ 
+-  if (object == null) {
+-    throw new TypeError('must start with number, buffer, array or string')
+-  }
++BN.prototype.abs = function abs() {
++  return this.clone().iabs();
++};
+ 
+-  if (typeof ArrayBuffer !== 'undefined') {
+-    if (object.buffer instanceof ArrayBuffer) {
+-      return fromTypedArray(that, object)
+-    }
+-    if (object instanceof ArrayBuffer) {
+-      return fromArrayBuffer(that, object)
+-    }
++BN.prototype._ishlnsubmul = function _ishlnsubmul(num, mul, shift) {
++  // Bigger storage is needed
++  var len = num.length + shift;
++  var i;
++  if (this.words.length < len) {
++    var t = new Array(len);
++    for (var i = 0; i < this.length; i++)
++      t[i] = this.words[i];
++    this.words = t;
++  } else {
++    i = this.length;
+   }
+ 
+-  if (object.length) return fromArrayLike(that, object)
+-
+-  return fromJsonObject(that, object)
+-}
+-
+-function fromBuffer (that, buffer) {
+-  var length = checked(buffer.length) | 0
+-  that = allocate(that, length)
+-  buffer.copy(that, 0, 0, length)
+-  return that
+-}
++  // Zeroify rest
++  this.length = Math.max(this.length, len);
++  for (; i < this.length; i++)
++    this.words[i] = 0;
+ 
+-function fromArray (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
++  var carry = 0;
++  for (var i = 0; i < num.length; i++) {
++    var w = this.words[i + shift] + carry;
++    var right = num.words[i] * mul;
++    w -= right & 0x3ffffff;
++    carry = (w >> 26) - ((right / 0x4000000) | 0);
++    this.words[i + shift] = w & 0x3ffffff;
+   }
+-  return that
+-}
+-
+-// Duplicate of fromArray() to keep fromArray() monomorphic.
+-function fromTypedArray (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  // Truncating the elements is probably not what people expect from typed
+-  // arrays with BYTES_PER_ELEMENT > 1 but it's compatible with the behavior
+-  // of the old Buffer constructor.
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
++  for (; i < this.length - shift; i++) {
++    var w = this.words[i + shift] + carry;
++    carry = w >> 26;
++    this.words[i + shift] = w & 0x3ffffff;
+   }
+-  return that
+-}
+ 
+-function fromArrayBuffer (that, array) {
+-  array.byteLength // this throws if `array` is not a valid ArrayBuffer
++  if (carry === 0)
++    return this.strip();
+ 
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    // Return an augmented `Uint8Array` instance, for best performance
+-    that = new Uint8Array(array)
+-    that.__proto__ = Buffer.prototype
+-  } else {
+-    // Fallback: Return an object instance of the Buffer class
+-    that = fromTypedArray(that, new Uint8Array(array))
++  // Subtraction overflow
++  assert(carry === -1);
++  carry = 0;
++  for (var i = 0; i < this.length; i++) {
++    var w = -this.words[i] + carry;
++    carry = w >> 26;
++    this.words[i] = w & 0x3ffffff;
+   }
+-  return that
+-}
++  this.sign = true;
+ 
+-function fromArrayLike (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
+-  }
+-  return that
+-}
++  return this.strip();
++};
+ 
+-// Deserialize { type: 'Buffer', data: [1,2,3,...] } into a Buffer object.
+-// Returns a zero-length buffer for inputs that don't conform to the spec.
+-function fromJsonObject (that, object) {
+-  var array
+-  var length = 0
++BN.prototype._wordDiv = function _wordDiv(num, mode) {
++  var shift = this.length - num.length;
+ 
+-  if (object.type === 'Buffer' && isArray(object.data)) {
+-    array = object.data
+-    length = checked(array.length) | 0
+-  }
+-  that = allocate(that, length)
++  var a = this.clone();
++  var b = num;
+ 
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
++  // Normalize
++  var bhi = b.words[b.length - 1];
++  var bhiBits = this._countBits(bhi);
++  shift = 26 - bhiBits;
++  if (shift !== 0) {
++    b = b.shln(shift);
++    a.ishln(shift);
++    bhi = b.words[b.length - 1];
+   }
+-  return that
+-}
+ 
+-if (Buffer.TYPED_ARRAY_SUPPORT) {
+-  Buffer.prototype.__proto__ = Uint8Array.prototype
+-  Buffer.__proto__ = Uint8Array
+-  if (typeof Symbol !== 'undefined' && Symbol.species &&
+-      Buffer[Symbol.species] === Buffer) {
+-    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
+-    Object.defineProperty(Buffer, Symbol.species, {
+-      value: null,
+-      configurable: true
+-    })
++  // Initialize quotient
++  var m = a.length - b.length;
++  var q;
++
++  if (mode !== 'mod') {
++    q = new BN(null);
++    q.length = m + 1;
++    q.words = new Array(q.length);
++    for (var i = 0; i < q.length; i++)
++      q.words[i] = 0;
+   }
+-} else {
+-  // pre-set for values that may exist in the future
+-  Buffer.prototype.length = undefined
+-  Buffer.prototype.parent = undefined
+-}
+ 
+-function allocate (that, length) {
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    // Return an augmented `Uint8Array` instance, for best performance
+-    that = new Uint8Array(length)
+-    that.__proto__ = Buffer.prototype
+-  } else {
+-    // Fallback: Return an object instance of the Buffer class
+-    that.length = length
++  var diff = a.clone()._ishlnsubmul(b, 1, m);
++  if (!diff.sign) {
++    a = diff;
++    if (q)
++      q.words[m] = 1;
+   }
+ 
+-  var fromPool = length !== 0 && length <= Buffer.poolSize >>> 1
+-  if (fromPool) that.parent = rootParent
++  for (var j = m - 1; j >= 0; j--) {
++    var qj = a.words[b.length + j] * 0x4000000 + a.words[b.length + j - 1];
+ 
+-  return that
+-}
++    // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
++    // (0x7ffffff)
++    qj = Math.min((qj / bhi) | 0, 0x3ffffff);
+ 
+-function checked (length) {
+-  // Note: cannot use `length < kMaxLength` here because that fails when
+-  // length is NaN (which is otherwise coerced to zero.)
+-  if (length >= kMaxLength()) {
+-    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+-                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
++    a._ishlnsubmul(b, qj, j);
++    while (a.sign) {
++      qj--;
++      a.sign = false;
++      a._ishlnsubmul(b, 1, j);
++      if (a.cmpn(0) !== 0)
++        a.sign = !a.sign;
++    }
++    if (q)
++      q.words[j] = qj;
+   }
+-  return length | 0
+-}
+-
+-function SlowBuffer (subject, encoding) {
+-  if (!(this instanceof SlowBuffer)) return new SlowBuffer(subject, encoding)
++  if (q)
++    q.strip();
++  a.strip();
+ 
+-  var buf = new Buffer(subject, encoding)
+-  delete buf.parent
+-  return buf
+-}
++  // Denormalize
++  if (mode !== 'div' && shift !== 0)
++    a.ishrn(shift);
++  return { div: q ? q : null, mod: a };
++};
+ 
+-Buffer.isBuffer = function isBuffer (b) {
+-  return !!(b != null && b._isBuffer)
+-}
++BN.prototype.divmod = function divmod(num, mode) {
++  assert(num.cmpn(0) !== 0);
+ 
+-Buffer.compare = function compare (a, b) {
+-  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
+-    throw new TypeError('Arguments must be Buffers')
++  if (this.sign && !num.sign) {
++    var res = this.neg().divmod(num, mode);
++    var div;
++    var mod;
++    if (mode !== 'mod')
++      div = res.div.neg();
++    if (mode !== 'div')
++      mod = res.mod.cmpn(0) === 0 ? res.mod : num.sub(res.mod);
++    return {
++      div: div,
++      mod: mod
++    };
++  } else if (!this.sign && num.sign) {
++    var res = this.divmod(num.neg(), mode);
++    var div;
++    if (mode !== 'mod')
++      div = res.div.neg();
++    return { div: div, mod: res.mod };
++  } else if (this.sign && num.sign) {
++    return this.neg().divmod(num.neg(), mode);
+   }
+ 
+-  if (a === b) return 0
++  // Both numbers are positive at this point
+ 
+-  var x = a.length
+-  var y = b.length
++  // Strip both numbers to approximate shift value
++  if (num.length > this.length || this.cmp(num) < 0)
++    return { div: new BN(0), mod: this };
+ 
+-  var i = 0
+-  var len = Math.min(x, y)
+-  while (i < len) {
+-    if (a[i] !== b[i]) break
+-
+-    ++i
+-  }
+-
+-  if (i !== len) {
+-    x = a[i]
+-    y = b[i]
++  // Very short reduction
++  if (num.length === 1) {
++    if (mode === 'div')
++      return { div: this.divn(num.words[0]), mod: null };
++    else if (mode === 'mod')
++      return { div: null, mod: new BN(this.modn(num.words[0])) };
++    return {
++      div: this.divn(num.words[0]),
++      mod: new BN(this.modn(num.words[0]))
++    };
+   }
+ 
+-  if (x < y) return -1
+-  if (y < x) return 1
+-  return 0
+-}
++  return this._wordDiv(num, mode);
++};
+ 
+-Buffer.isEncoding = function isEncoding (encoding) {
+-  switch (String(encoding).toLowerCase()) {
+-    case 'hex':
+-    case 'utf8':
+-    case 'utf-8':
+-    case 'ascii':
+-    case 'binary':
+-    case 'base64':
+-    case 'raw':
+-    case 'ucs2':
+-    case 'ucs-2':
+-    case 'utf16le':
+-    case 'utf-16le':
+-      return true
+-    default:
+-      return false
+-  }
+-}
++// Find `this` / `num`
++BN.prototype.div = function div(num) {
++  return this.divmod(num, 'div').div;
++};
+ 
+-Buffer.concat = function concat (list, length) {
+-  if (!isArray(list)) throw new TypeError('list argument must be an Array of Buffers.')
++// Find `this` % `num`
++BN.prototype.mod = function mod(num) {
++  return this.divmod(num, 'mod').mod;
++};
+ 
+-  if (list.length === 0) {
+-    return new Buffer(0)
+-  }
++// Find Round(`this` / `num`)
++BN.prototype.divRound = function divRound(num) {
++  var dm = this.divmod(num);
+ 
+-  var i
+-  if (length === undefined) {
+-    length = 0
+-    for (i = 0; i < list.length; i++) {
+-      length += list[i].length
+-    }
+-  }
++  // Fast case - exact division
++  if (dm.mod.cmpn(0) === 0)
++    return dm.div;
+ 
+-  var buf = new Buffer(length)
+-  var pos = 0
+-  for (i = 0; i < list.length; i++) {
+-    var item = list[i]
+-    item.copy(buf, pos)
+-    pos += item.length
+-  }
+-  return buf
+-}
++  var mod = dm.div.sign ? dm.mod.isub(num) : dm.mod;
+ 
+-function byteLength (string, encoding) {
+-  if (typeof string !== 'string') string = '' + string
++  var half = num.shrn(1);
++  var r2 = num.andln(1);
++  var cmp = mod.cmp(half);
+ 
+-  var len = string.length
+-  if (len === 0) return 0
++  // Round down
++  if (cmp < 0 || r2 === 1 && cmp === 0)
++    return dm.div;
+ 
+-  // Use a for loop to avoid recursion
+-  var loweredCase = false
+-  for (;;) {
+-    switch (encoding) {
+-      case 'ascii':
+-      case 'binary':
+-      // Deprecated
+-      case 'raw':
+-      case 'raws':
+-        return len
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8ToBytes(string).length
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return len * 2
+-      case 'hex':
+-        return len >>> 1
+-      case 'base64':
+-        return base64ToBytes(string).length
+-      default:
+-        if (loweredCase) return utf8ToBytes(string).length // assume utf8
+-        encoding = ('' + encoding).toLowerCase()
+-        loweredCase = true
+-    }
+-  }
+-}
+-Buffer.byteLength = byteLength
++  // Round up
++  return dm.div.sign ? dm.div.isubn(1) : dm.div.iaddn(1);
++};
+ 
+-function slowToString (encoding, start, end) {
+-  var loweredCase = false
++BN.prototype.modn = function modn(num) {
++  assert(num <= 0x3ffffff);
++  var p = (1 << 26) % num;
+ 
+-  start = start | 0
+-  end = end === undefined || end === Infinity ? this.length : end | 0
++  var acc = 0;
++  for (var i = this.length - 1; i >= 0; i--)
++    acc = (p * acc + this.words[i]) % num;
+ 
+-  if (!encoding) encoding = 'utf8'
+-  if (start < 0) start = 0
+-  if (end > this.length) end = this.length
+-  if (end <= start) return ''
++  return acc;
++};
+ 
+-  while (true) {
+-    switch (encoding) {
+-      case 'hex':
+-        return hexSlice(this, start, end)
++// In-place division by number
++BN.prototype.idivn = function idivn(num) {
++  assert(num <= 0x3ffffff);
+ 
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8Slice(this, start, end)
++  var carry = 0;
++  for (var i = this.length - 1; i >= 0; i--) {
++    var w = this.words[i] + carry * 0x4000000;
++    this.words[i] = (w / num) | 0;
++    carry = w % num;
++  }
+ 
+-      case 'ascii':
+-        return asciiSlice(this, start, end)
++  return this.strip();
++};
+ 
+-      case 'binary':
+-        return binarySlice(this, start, end)
++BN.prototype.divn = function divn(num) {
++  return this.clone().idivn(num);
++};
+ 
+-      case 'base64':
+-        return base64Slice(this, start, end)
++BN.prototype.egcd = function egcd(p) {
++  assert(!p.sign);
++  assert(p.cmpn(0) !== 0);
+ 
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return utf16leSlice(this, start, end)
++  var x = this;
++  var y = p.clone();
+ 
+-      default:
+-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+-        encoding = (encoding + '').toLowerCase()
+-        loweredCase = true
+-    }
+-  }
+-}
++  if (x.sign)
++    x = x.mod(p);
++  else
++    x = x.clone();
+ 
+-// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
+-// Buffer instances.
+-Buffer.prototype._isBuffer = true
++  // A * x + B * y = x
++  var A = new BN(1);
++  var B = new BN(0);
+ 
+-Buffer.prototype.toString = function toString () {
+-  var length = this.length | 0
+-  if (length === 0) return ''
+-  if (arguments.length === 0) return utf8Slice(this, 0, length)
+-  return slowToString.apply(this, arguments)
+-}
++  // C * x + D * y = y
++  var C = new BN(0);
++  var D = new BN(1);
+ 
+-Buffer.prototype.equals = function equals (b) {
+-  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+-  if (this === b) return true
+-  return Buffer.compare(this, b) === 0
+-}
++  var g = 0;
+ 
+-Buffer.prototype.inspect = function inspect () {
+-  var str = ''
+-  var max = exports.INSPECT_MAX_BYTES
+-  if (this.length > 0) {
+-    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
+-    if (this.length > max) str += ' ... '
++  while (x.isEven() && y.isEven()) {
++    x.ishrn(1);
++    y.ishrn(1);
++    ++g;
+   }
+-  return '<Buffer ' + str + '>'
+-}
+-
+-Buffer.prototype.compare = function compare (b) {
+-  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+-  if (this === b) return 0
+-  return Buffer.compare(this, b)
+-}
+ 
+-Buffer.prototype.indexOf = function indexOf (val, byteOffset) {
+-  if (byteOffset > 0x7fffffff) byteOffset = 0x7fffffff
+-  else if (byteOffset < -0x80000000) byteOffset = -0x80000000
+-  byteOffset >>= 0
+-
+-  if (this.length === 0) return -1
+-  if (byteOffset >= this.length) return -1
+-
+-  // Negative offsets start from the end of the buffer
+-  if (byteOffset < 0) byteOffset = Math.max(this.length + byteOffset, 0)
++  var yp = y.clone();
++  var xp = x.clone();
+ 
+-  if (typeof val === 'string') {
+-    if (val.length === 0) return -1 // special case: looking for empty string always fails
+-    return String.prototype.indexOf.call(this, val, byteOffset)
+-  }
+-  if (Buffer.isBuffer(val)) {
+-    return arrayIndexOf(this, val, byteOffset)
+-  }
+-  if (typeof val === 'number') {
+-    if (Buffer.TYPED_ARRAY_SUPPORT && Uint8Array.prototype.indexOf === 'function') {
+-      return Uint8Array.prototype.indexOf.call(this, val, byteOffset)
++  while (x.cmpn(0) !== 0) {
++    while (x.isEven()) {
++      x.ishrn(1);
++      if (A.isEven() && B.isEven()) {
++        A.ishrn(1);
++        B.ishrn(1);
++      } else {
++        A.iadd(yp).ishrn(1);
++        B.isub(xp).ishrn(1);
++      }
+     }
+-    return arrayIndexOf(this, [ val ], byteOffset)
+-  }
+ 
+-  function arrayIndexOf (arr, val, byteOffset) {
+-    var foundIndex = -1
+-    for (var i = 0; byteOffset + i < arr.length; i++) {
+-      if (arr[byteOffset + i] === val[foundIndex === -1 ? 0 : i - foundIndex]) {
+-        if (foundIndex === -1) foundIndex = i
+-        if (i - foundIndex + 1 === val.length) return byteOffset + foundIndex
++    while (y.isEven()) {
++      y.ishrn(1);
++      if (C.isEven() && D.isEven()) {
++        C.ishrn(1);
++        D.ishrn(1);
+       } else {
+-        foundIndex = -1
++        C.iadd(yp).ishrn(1);
++        D.isub(xp).ishrn(1);
+       }
+     }
+-    return -1
+-  }
+ 
+-  throw new TypeError('val must be string, number or Buffer')
+-}
+-
+-function hexWrite (buf, string, offset, length) {
+-  offset = Number(offset) || 0
+-  var remaining = buf.length - offset
+-  if (!length) {
+-    length = remaining
+-  } else {
+-    length = Number(length)
+-    if (length > remaining) {
+-      length = remaining
++    if (x.cmp(y) >= 0) {
++      x.isub(y);
++      A.isub(C);
++      B.isub(D);
++    } else {
++      y.isub(x);
++      C.isub(A);
++      D.isub(B);
+     }
+   }
+ 
+-  // must be an even number of digits
+-  var strLen = string.length
+-  if (strLen % 2 !== 0) throw new Error('Invalid hex string')
+-
+-  if (length > strLen / 2) {
+-    length = strLen / 2
+-  }
+-  for (var i = 0; i < length; i++) {
+-    var parsed = parseInt(string.substr(i * 2, 2), 16)
+-    if (isNaN(parsed)) throw new Error('Invalid hex string')
+-    buf[offset + i] = parsed
+-  }
+-  return i
+-}
++  return {
++    a: C,
++    b: D,
++    gcd: y.ishln(g)
++  };
++};
+ 
+-function utf8Write (buf, string, offset, length) {
+-  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+-}
++// This is reduced incarnation of the binary EEA
++// above, designated to invert members of the
++// _prime_ fields F(p) at a maximal speed
++BN.prototype._invmp = function _invmp(p) {
++  assert(!p.sign);
++  assert(p.cmpn(0) !== 0);
+ 
+-function asciiWrite (buf, string, offset, length) {
+-  return blitBuffer(asciiToBytes(string), buf, offset, length)
+-}
++  var a = this;
++  var b = p.clone();
+ 
+-function binaryWrite (buf, string, offset, length) {
+-  return asciiWrite(buf, string, offset, length)
+-}
++  if (a.sign)
++    a = a.mod(p);
++  else
++    a = a.clone();
+ 
+-function base64Write (buf, string, offset, length) {
+-  return blitBuffer(base64ToBytes(string), buf, offset, length)
+-}
++  var x1 = new BN(1);
++  var x2 = new BN(0);
+ 
+-function ucs2Write (buf, string, offset, length) {
+-  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+-}
++  var delta = b.clone();
+ 
+-Buffer.prototype.write = function write (string, offset, length, encoding) {
+-  // Buffer#write(string)
+-  if (offset === undefined) {
+-    encoding = 'utf8'
+-    length = this.length
+-    offset = 0
+-  // Buffer#write(string, encoding)
+-  } else if (length === undefined && typeof offset === 'string') {
+-    encoding = offset
+-    length = this.length
+-    offset = 0
+-  // Buffer#write(string, offset[, length][, encoding])
+-  } else if (isFinite(offset)) {
+-    offset = offset | 0
+-    if (isFinite(length)) {
+-      length = length | 0
+-      if (encoding === undefined) encoding = 'utf8'
++  while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
++    while (a.isEven()) {
++      a.ishrn(1);
++      if (x1.isEven())
++        x1.ishrn(1);
++      else
++        x1.iadd(delta).ishrn(1);
++    }
++    while (b.isEven()) {
++      b.ishrn(1);
++      if (x2.isEven())
++        x2.ishrn(1);
++      else
++        x2.iadd(delta).ishrn(1);
++    }
++    if (a.cmp(b) >= 0) {
++      a.isub(b);
++      x1.isub(x2);
+     } else {
+-      encoding = length
+-      length = undefined
++      b.isub(a);
++      x2.isub(x1);
+     }
+-  // legacy write(string, encoding, offset, length) - remove in v0.13
+-  } else {
+-    var swap = encoding
+-    encoding = offset
+-    offset = length | 0
+-    length = swap
+   }
++  if (a.cmpn(1) === 0)
++    return x1;
++  else
++    return x2;
++};
+ 
+-  var remaining = this.length - offset
+-  if (length === undefined || length > remaining) length = remaining
++BN.prototype.gcd = function gcd(num) {
++  if (this.cmpn(0) === 0)
++    return num.clone();
++  if (num.cmpn(0) === 0)
++    return this.clone();
+ 
+-  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
+-    throw new RangeError('attempt to write outside buffer bounds')
++  var a = this.clone();
++  var b = num.clone();
++  a.sign = false;
++  b.sign = false;
++
++  // Remove common factor of two
++  for (var shift = 0; a.isEven() && b.isEven(); shift++) {
++    a.ishrn(1);
++    b.ishrn(1);
+   }
+ 
+-  if (!encoding) encoding = 'utf8'
++  do {
++    while (a.isEven())
++      a.ishrn(1);
++    while (b.isEven())
++      b.ishrn(1);
+ 
+-  var loweredCase = false
+-  for (;;) {
+-    switch (encoding) {
+-      case 'hex':
+-        return hexWrite(this, string, offset, length)
++    var r = a.cmp(b);
++    if (r < 0) {
++      // Swap `a` and `b` to make `a` always bigger than `b`
++      var t = a;
++      a = b;
++      b = t;
++    } else if (r === 0 || b.cmpn(1) === 0) {
++      break;
++    }
+ 
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8Write(this, string, offset, length)
++    a.isub(b);
++  } while (true);
+ 
+-      case 'ascii':
+-        return asciiWrite(this, string, offset, length)
++  return b.ishln(shift);
++};
+ 
+-      case 'binary':
+-        return binaryWrite(this, string, offset, length)
++// Invert number in the field F(num)
++BN.prototype.invm = function invm(num) {
++  return this.egcd(num).a.mod(num);
++};
+ 
+-      case 'base64':
+-        // Warning: maxLength not taken into account in base64Write
+-        return base64Write(this, string, offset, length)
++BN.prototype.isEven = function isEven() {
++  return (this.words[0] & 1) === 0;
++};
+ 
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return ucs2Write(this, string, offset, length)
++BN.prototype.isOdd = function isOdd() {
++  return (this.words[0] & 1) === 1;
++};
+ 
+-      default:
+-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+-        encoding = ('' + encoding).toLowerCase()
+-        loweredCase = true
+-    }
++// And first word and num
++BN.prototype.andln = function andln(num) {
++  return this.words[0] & num;
++};
++
++// Increment at the bit position in-line
++BN.prototype.bincn = function bincn(bit) {
++  assert(typeof bit === 'number');
++  var r = bit % 26;
++  var s = (bit - r) / 26;
++  var q = 1 << r;
++
++  // Fast case: bit is much higher than all existing words
++  if (this.length <= s) {
++    for (var i = this.length; i < s + 1; i++)
++      this.words[i] = 0;
++    this.words[s] |= q;
++    this.length = s + 1;
++    return this;
+   }
+-}
+ 
+-Buffer.prototype.toJSON = function toJSON () {
+-  return {
+-    type: 'Buffer',
+-    data: Array.prototype.slice.call(this._arr || this, 0)
++  // Add bit and propagate, if needed
++  var carry = q;
++  for (var i = s; carry !== 0 && i < this.length; i++) {
++    var w = this.words[i];
++    w += carry;
++    carry = w >>> 26;
++    w &= 0x3ffffff;
++    this.words[i] = w;
+   }
+-}
++  if (carry !== 0) {
++    this.words[i] = carry;
++    this.length++;
++  }
++  return this;
++};
+ 
+-function base64Slice (buf, start, end) {
+-  if (start === 0 && end === buf.length) {
+-    return base64.fromByteArray(buf)
++BN.prototype.cmpn = function cmpn(num) {
++  var sign = num < 0;
++  if (sign)
++    num = -num;
++
++  if (this.sign && !sign)
++    return -1;
++  else if (!this.sign && sign)
++    return 1;
++
++  num &= 0x3ffffff;
++  this.strip();
++
++  var res;
++  if (this.length > 1) {
++    res = 1;
+   } else {
+-    return base64.fromByteArray(buf.slice(start, end))
++    var w = this.words[0];
++    res = w === num ? 0 : w < num ? -1 : 1;
+   }
+-}
+-
+-function utf8Slice (buf, start, end) {
+-  end = Math.min(buf.length, end)
+-  var res = []
++  if (this.sign)
++    res = -res;
++  return res;
++};
+ 
+-  var i = start
+-  while (i < end) {
+-    var firstByte = buf[i]
+-    var codePoint = null
+-    var bytesPerSequence = (firstByte > 0xEF) ? 4
+-      : (firstByte > 0xDF) ? 3
+-      : (firstByte > 0xBF) ? 2
+-      : 1
++// Compare two numbers and return:
++// 1 - if `this` > `num`
++// 0 - if `this` == `num`
++// -1 - if `this` < `num`
++BN.prototype.cmp = function cmp(num) {
++  if (this.sign && !num.sign)
++    return -1;
++  else if (!this.sign && num.sign)
++    return 1;
+ 
+-    if (i + bytesPerSequence <= end) {
+-      var secondByte, thirdByte, fourthByte, tempCodePoint
++  var res = this.ucmp(num);
++  if (this.sign)
++    return -res;
++  else
++    return res;
++};
+ 
+-      switch (bytesPerSequence) {
+-        case 1:
+-          if (firstByte < 0x80) {
+-            codePoint = firstByte
+-          }
+-          break
+-        case 2:
+-          secondByte = buf[i + 1]
+-          if ((secondByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
+-            if (tempCodePoint > 0x7F) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-          break
+-        case 3:
+-          secondByte = buf[i + 1]
+-          thirdByte = buf[i + 2]
+-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
+-            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-          break
+-        case 4:
+-          secondByte = buf[i + 1]
+-          thirdByte = buf[i + 2]
+-          fourthByte = buf[i + 3]
+-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
+-            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-      }
+-    }
++// Unsigned comparison
++BN.prototype.ucmp = function ucmp(num) {
++  // At this point both numbers have the same sign
++  if (this.length > num.length)
++    return 1;
++  else if (this.length < num.length)
++    return -1;
+ 
+-    if (codePoint === null) {
+-      // we did not generate a valid codePoint so insert a
+-      // replacement char (U+FFFD) and advance only 1 byte
+-      codePoint = 0xFFFD
+-      bytesPerSequence = 1
+-    } else if (codePoint > 0xFFFF) {
+-      // encode to utf16 (surrogate pair dance)
+-      codePoint -= 0x10000
+-      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
+-      codePoint = 0xDC00 | codePoint & 0x3FF
+-    }
++  var res = 0;
++  for (var i = this.length - 1; i >= 0; i--) {
++    var a = this.words[i];
++    var b = num.words[i];
+ 
+-    res.push(codePoint)
+-    i += bytesPerSequence
++    if (a === b)
++      continue;
++    if (a < b)
++      res = -1;
++    else if (a > b)
++      res = 1;
++    break;
+   }
++  return res;
++};
+ 
+-  return decodeCodePointsArray(res)
+-}
++//
++// A reduce context, could be using montgomery or something better, depending
++// on the `m` itself.
++//
++BN.red = function red(num) {
++  return new Red(num);
++};
+ 
+-// Based on http://stackoverflow.com/a/22747272/680742, the browser with
+-// the lowest limit is Chrome, with 0x10000 args.
+-// We go 1 magnitude less, for safety
+-var MAX_ARGUMENTS_LENGTH = 0x1000
++BN.prototype.toRed = function toRed(ctx) {
++  assert(!this.red, 'Already a number in reduction context');
++  assert(!this.sign, 'red works only with positives');
++  return ctx.convertTo(this)._forceRed(ctx);
++};
+ 
+-function decodeCodePointsArray (codePoints) {
+-  var len = codePoints.length
+-  if (len <= MAX_ARGUMENTS_LENGTH) {
+-    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+-  }
++BN.prototype.fromRed = function fromRed() {
++  assert(this.red, 'fromRed works only with numbers in reduction context');
++  return this.red.convertFrom(this);
++};
+ 
+-  // Decode in chunks to avoid "call stack size exceeded".
+-  var res = ''
+-  var i = 0
+-  while (i < len) {
+-    res += String.fromCharCode.apply(
+-      String,
+-      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
+-    )
+-  }
+-  return res
+-}
++BN.prototype._forceRed = function _forceRed(ctx) {
++  this.red = ctx;
++  return this;
++};
+ 
+-function asciiSlice (buf, start, end) {
+-  var ret = ''
+-  end = Math.min(buf.length, end)
++BN.prototype.forceRed = function forceRed(ctx) {
++  assert(!this.red, 'Already a number in reduction context');
++  return this._forceRed(ctx);
++};
+ 
+-  for (var i = start; i < end; i++) {
+-    ret += String.fromCharCode(buf[i] & 0x7F)
+-  }
+-  return ret
+-}
++BN.prototype.redAdd = function redAdd(num) {
++  assert(this.red, 'redAdd works only with red numbers');
++  return this.red.add(this, num);
++};
+ 
+-function binarySlice (buf, start, end) {
+-  var ret = ''
+-  end = Math.min(buf.length, end)
++BN.prototype.redIAdd = function redIAdd(num) {
++  assert(this.red, 'redIAdd works only with red numbers');
++  return this.red.iadd(this, num);
++};
+ 
+-  for (var i = start; i < end; i++) {
+-    ret += String.fromCharCode(buf[i])
+-  }
+-  return ret
+-}
++BN.prototype.redSub = function redSub(num) {
++  assert(this.red, 'redSub works only with red numbers');
++  return this.red.sub(this, num);
++};
+ 
+-function hexSlice (buf, start, end) {
+-  var len = buf.length
++BN.prototype.redISub = function redISub(num) {
++  assert(this.red, 'redISub works only with red numbers');
++  return this.red.isub(this, num);
++};
+ 
+-  if (!start || start < 0) start = 0
+-  if (!end || end < 0 || end > len) end = len
++BN.prototype.redShl = function redShl(num) {
++  assert(this.red, 'redShl works only with red numbers');
++  return this.red.shl(this, num);
++};
+ 
+-  var out = ''
+-  for (var i = start; i < end; i++) {
+-    out += toHex(buf[i])
+-  }
+-  return out
+-}
++BN.prototype.redMul = function redMul(num) {
++  assert(this.red, 'redMul works only with red numbers');
++  this.red._verify2(this, num);
++  return this.red.mul(this, num);
++};
+ 
+-function utf16leSlice (buf, start, end) {
+-  var bytes = buf.slice(start, end)
+-  var res = ''
+-  for (var i = 0; i < bytes.length; i += 2) {
+-    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
+-  }
+-  return res
+-}
++BN.prototype.redIMul = function redIMul(num) {
++  assert(this.red, 'redMul works only with red numbers');
++  this.red._verify2(this, num);
++  return this.red.imul(this, num);
++};
+ 
+-Buffer.prototype.slice = function slice (start, end) {
+-  var len = this.length
+-  start = ~~start
+-  end = end === undefined ? len : ~~end
++BN.prototype.redSqr = function redSqr() {
++  assert(this.red, 'redSqr works only with red numbers');
++  this.red._verify1(this);
++  return this.red.sqr(this);
++};
+ 
+-  if (start < 0) {
+-    start += len
+-    if (start < 0) start = 0
+-  } else if (start > len) {
+-    start = len
+-  }
++BN.prototype.redISqr = function redISqr() {
++  assert(this.red, 'redISqr works only with red numbers');
++  this.red._verify1(this);
++  return this.red.isqr(this);
++};
+ 
+-  if (end < 0) {
+-    end += len
+-    if (end < 0) end = 0
+-  } else if (end > len) {
+-    end = len
+-  }
++// Square root over p
++BN.prototype.redSqrt = function redSqrt() {
++  assert(this.red, 'redSqrt works only with red numbers');
++  this.red._verify1(this);
++  return this.red.sqrt(this);
++};
+ 
+-  if (end < start) end = start
++BN.prototype.redInvm = function redInvm() {
++  assert(this.red, 'redInvm works only with red numbers');
++  this.red._verify1(this);
++  return this.red.invm(this);
++};
+ 
+-  var newBuf
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    newBuf = this.subarray(start, end)
+-    newBuf.__proto__ = Buffer.prototype
+-  } else {
+-    var sliceLen = end - start
+-    newBuf = new Buffer(sliceLen, undefined)
+-    for (var i = 0; i < sliceLen; i++) {
+-      newBuf[i] = this[i + start]
+-    }
+-  }
++// Return negative clone of `this` % `red modulo`
++BN.prototype.redNeg = function redNeg() {
++  assert(this.red, 'redNeg works only with red numbers');
++  this.red._verify1(this);
++  return this.red.neg(this);
++};
+ 
+-  if (newBuf.length) newBuf.parent = this.parent || this
++BN.prototype.redPow = function redPow(num) {
++  assert(this.red && !num.red, 'redPow(normalNum)');
++  this.red._verify1(this);
++  return this.red.pow(this, num);
++};
+ 
+-  return newBuf
+-}
++// Prime numbers with efficient reduction
++var primes = {
++  k256: null,
++  p224: null,
++  p192: null,
++  p25519: null
++};
+ 
+-/*
+- * Need to make sure that buffer isn't trying to write out of bounds.
+- */
+-function checkOffset (offset, ext, length) {
+-  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+-  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+-}
++// Pseudo-Mersenne prime
++function MPrime(name, p) {
++  // P = 2 ^ N - K
++  this.name = name;
++  this.p = new BN(p, 16);
++  this.n = this.p.bitLength();
++  this.k = new BN(1).ishln(this.n).isub(this.p);
+ 
+-Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
++  this.tmp = this._tmp();
++}
+ 
+-  var val = this[offset]
+-  var mul = 1
+-  var i = 0
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    val += this[offset + i] * mul
+-  }
++MPrime.prototype._tmp = function _tmp() {
++  var tmp = new BN(null);
++  tmp.words = new Array(Math.ceil(this.n / 13));
++  return tmp;
++};
+ 
+-  return val
+-}
++MPrime.prototype.ireduce = function ireduce(num) {
++  // Assumes that `num` is less than `P^2`
++  // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
++  var r = num;
++  var rlen;
+ 
+-Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) {
+-    checkOffset(offset, byteLength, this.length)
+-  }
++  do {
++    this.split(r, this.tmp);
++    r = this.imulK(r);
++    r = r.iadd(this.tmp);
++    rlen = r.bitLength();
++  } while (rlen > this.n);
+ 
+-  var val = this[offset + --byteLength]
+-  var mul = 1
+-  while (byteLength > 0 && (mul *= 0x100)) {
+-    val += this[offset + --byteLength] * mul
++  var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
++  if (cmp === 0) {
++    r.words[0] = 0;
++    r.length = 1;
++  } else if (cmp > 0) {
++    r.isub(this.p);
++  } else {
++    r.strip();
+   }
+ 
+-  return val
+-}
++  return r;
++};
+ 
+-Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 1, this.length)
+-  return this[offset]
+-}
++MPrime.prototype.split = function split(input, out) {
++  input.ishrn(this.n, 0, out);
++};
+ 
+-Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  return this[offset] | (this[offset + 1] << 8)
+-}
++MPrime.prototype.imulK = function imulK(num) {
++  return num.imul(this.k);
++};
+ 
+-Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  return (this[offset] << 8) | this[offset + 1]
++function K256() {
++  MPrime.call(
++    this,
++    'k256',
++    'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
+ }
++inherits(K256, MPrime);
+ 
+-Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-
+-  return ((this[offset]) |
+-      (this[offset + 1] << 8) |
+-      (this[offset + 2] << 16)) +
+-      (this[offset + 3] * 0x1000000)
+-}
++K256.prototype.split = function split(input, output) {
++  // 256 = 9 * 26 + 22
++  var mask = 0x3fffff;
+ 
+-Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
++  var outLen = Math.min(input.length, 9);
++  for (var i = 0; i < outLen; i++)
++    output.words[i] = input.words[i];
++  output.length = outLen;
+ 
+-  return (this[offset] * 0x1000000) +
+-    ((this[offset + 1] << 16) |
+-    (this[offset + 2] << 8) |
+-    this[offset + 3])
+-}
++  if (input.length <= 9) {
++    input.words[0] = 0;
++    input.length = 1;
++    return;
++  }
+ 
+-Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
++  // Shift by 9 limbs
++  var prev = input.words[9];
++  output.words[output.length++] = prev & mask;
+ 
+-  var val = this[offset]
+-  var mul = 1
+-  var i = 0
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    val += this[offset + i] * mul
++  for (var i = 10; i < input.length; i++) {
++    var next = input.words[i];
++    input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
++    prev = next;
+   }
+-  mul *= 0x80
++  input.words[i - 10] = prev >>> 22;
++  input.length -= 9;
++};
+ 
+-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
++K256.prototype.imulK = function imulK(num) {
++  // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
++  num.words[num.length] = 0;
++  num.words[num.length + 1] = 0;
++  num.length += 2;
+ 
+-  return val
+-}
++  // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
++  var hi;
++  var lo = 0;
++  for (var i = 0; i < num.length; i++) {
++    var w = num.words[i];
++    hi = w * 0x40;
++    lo += w * 0x3d1;
++    hi += (lo / 0x4000000) | 0;
++    lo &= 0x3ffffff;
+ 
+-Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
++    num.words[i] = lo;
+ 
+-  var i = byteLength
+-  var mul = 1
+-  var val = this[offset + --i]
+-  while (i > 0 && (mul *= 0x100)) {
+-    val += this[offset + --i] * mul
++    lo = hi;
+   }
+-  mul *= 0x80
+ 
+-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
++  // Fast length reduction
++  if (num.words[num.length - 1] === 0) {
++    num.length--;
++    if (num.words[num.length - 1] === 0)
++      num.length--;
++  }
++  return num;
++};
+ 
+-  return val
++function P224() {
++  MPrime.call(
++    this,
++    'p224',
++    'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
+ }
++inherits(P224, MPrime);
+ 
+-Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 1, this.length)
+-  if (!(this[offset] & 0x80)) return (this[offset])
+-  return ((0xff - this[offset] + 1) * -1)
++function P192() {
++  MPrime.call(
++    this,
++    'p192',
++    'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
+ }
++inherits(P192, MPrime);
+ 
+-Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  var val = this[offset] | (this[offset + 1] << 8)
+-  return (val & 0x8000) ? val | 0xFFFF0000 : val
++function P25519() {
++  // 2 ^ 255 - 19
++  MPrime.call(
++    this,
++    '25519',
++    '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
+ }
++inherits(P25519, MPrime);
+ 
+-Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  var val = this[offset + 1] | (this[offset] << 8)
+-  return (val & 0x8000) ? val | 0xFFFF0000 : val
+-}
++P25519.prototype.imulK = function imulK(num) {
++  // K = 0x13
++  var carry = 0;
++  for (var i = 0; i < num.length; i++) {
++    var hi = num.words[i] * 0x13 + carry;
++    var lo = hi & 0x3ffffff;
++    hi >>>= 26;
+ 
+-Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
++    num.words[i] = lo;
++    carry = hi;
++  }
++  if (carry !== 0)
++    num.words[num.length++] = carry;
++  return num;
++};
+ 
+-  return (this[offset]) |
+-    (this[offset + 1] << 8) |
+-    (this[offset + 2] << 16) |
+-    (this[offset + 3] << 24)
+-}
++// Exported mostly for testing purposes, use plain name instead
++BN._prime = function prime(name) {
++  // Cached version of prime
++  if (primes[name])
++    return primes[name];
+ 
+-Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
++  var prime;
++  if (name === 'k256')
++    prime = new K256();
++  else if (name === 'p224')
++    prime = new P224();
++  else if (name === 'p192')
++    prime = new P192();
++  else if (name === 'p25519')
++    prime = new P25519();
++  else
++    throw new Error('Unknown prime ' + name);
++  primes[name] = prime;
+ 
+-  return (this[offset] << 24) |
+-    (this[offset + 1] << 16) |
+-    (this[offset + 2] << 8) |
+-    (this[offset + 3])
+-}
++  return prime;
++};
+ 
+-Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-  return ieee754.read(this, offset, true, 23, 4)
++//
++// Base reduction engine
++//
++function Red(m) {
++  if (typeof m === 'string') {
++    var prime = BN._prime(m);
++    this.m = prime.p;
++    this.prime = prime;
++  } else {
++    this.m = m;
++    this.prime = null;
++  }
+ }
+ 
+-Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-  return ieee754.read(this, offset, false, 23, 4)
+-}
++Red.prototype._verify1 = function _verify1(a) {
++  assert(!a.sign, 'red works only with positives');
++  assert(a.red, 'red works only with red numbers');
++};
+ 
+-Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 8, this.length)
+-  return ieee754.read(this, offset, true, 52, 8)
+-}
++Red.prototype._verify2 = function _verify2(a, b) {
++  assert(!a.sign && !b.sign, 'red works only with positives');
++  assert(a.red && a.red === b.red,
++         'red works only with red numbers');
++};
+ 
+-Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 8, this.length)
+-  return ieee754.read(this, offset, false, 52, 8)
+-}
++Red.prototype.imod = function imod(a) {
++  if (this.prime)
++    return this.prime.ireduce(a)._forceRed(this);
++  return a.mod(this.m)._forceRed(this);
++};
+ 
+-function checkInt (buf, value, offset, ext, max, min) {
+-  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
+-  if (value > max || value < min) throw new RangeError('value is out of bounds')
+-  if (offset + ext > buf.length) throw new RangeError('index out of range')
+-}
++Red.prototype.neg = function neg(a) {
++  var r = a.clone();
++  r.sign = !r.sign;
++  return r.iadd(this.m)._forceRed(this);
++};
+ 
+-Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
++Red.prototype.add = function add(a, b) {
++  this._verify2(a, b);
+ 
+-  var mul = 1
+-  var i = 0
+-  this[offset] = value & 0xFF
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    this[offset + i] = (value / mul) & 0xFF
+-  }
++  var res = a.add(b);
++  if (res.cmp(this.m) >= 0)
++    res.isub(this.m);
++  return res._forceRed(this);
++};
+ 
+-  return offset + byteLength
+-}
++Red.prototype.iadd = function iadd(a, b) {
++  this._verify2(a, b);
+ 
+-Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
++  var res = a.iadd(b);
++  if (res.cmp(this.m) >= 0)
++    res.isub(this.m);
++  return res;
++};
+ 
+-  var i = byteLength - 1
+-  var mul = 1
+-  this[offset + i] = value & 0xFF
+-  while (--i >= 0 && (mul *= 0x100)) {
+-    this[offset + i] = (value / mul) & 0xFF
+-  }
++Red.prototype.sub = function sub(a, b) {
++  this._verify2(a, b);
+ 
+-  return offset + byteLength
+-}
++  var res = a.sub(b);
++  if (res.cmpn(0) < 0)
++    res.iadd(this.m);
++  return res._forceRed(this);
++};
+ 
+-Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+-  this[offset] = (value & 0xff)
+-  return offset + 1
+-}
++Red.prototype.isub = function isub(a, b) {
++  this._verify2(a, b);
+ 
+-function objectWriteUInt16 (buf, value, offset, littleEndian) {
+-  if (value < 0) value = 0xffff + value + 1
+-  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
+-    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
+-      (littleEndian ? i : 1 - i) * 8
+-  }
+-}
++  var res = a.isub(b);
++  if (res.cmpn(0) < 0)
++    res.iadd(this.m);
++  return res;
++};
+ 
+-Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
+-  } else {
+-    objectWriteUInt16(this, value, offset, true)
+-  }
+-  return offset + 2
+-}
++Red.prototype.shl = function shl(a, num) {
++  this._verify1(a);
++  return this.imod(a.shln(num));
++};
+ 
+-Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 8)
+-    this[offset + 1] = (value & 0xff)
+-  } else {
+-    objectWriteUInt16(this, value, offset, false)
+-  }
+-  return offset + 2
+-}
++Red.prototype.imul = function imul(a, b) {
++  this._verify2(a, b);
++  return this.imod(a.imul(b));
++};
+ 
+-function objectWriteUInt32 (buf, value, offset, littleEndian) {
+-  if (value < 0) value = 0xffffffff + value + 1
+-  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
+-    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
+-  }
+-}
++Red.prototype.mul = function mul(a, b) {
++  this._verify2(a, b);
++  return this.imod(a.mul(b));
++};
+ 
+-Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset + 3] = (value >>> 24)
+-    this[offset + 2] = (value >>> 16)
+-    this[offset + 1] = (value >>> 8)
+-    this[offset] = (value & 0xff)
+-  } else {
+-    objectWriteUInt32(this, value, offset, true)
+-  }
+-  return offset + 4
+-}
++Red.prototype.isqr = function isqr(a) {
++  return this.imul(a, a);
++};
+ 
+-Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 24)
+-    this[offset + 1] = (value >>> 16)
+-    this[offset + 2] = (value >>> 8)
+-    this[offset + 3] = (value & 0xff)
+-  } else {
+-    objectWriteUInt32(this, value, offset, false)
+-  }
+-  return offset + 4
+-}
++Red.prototype.sqr = function sqr(a) {
++  return this.mul(a, a);
++};
+ 
+-Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) {
+-    var limit = Math.pow(2, 8 * byteLength - 1)
++Red.prototype.sqrt = function sqrt(a) {
++  if (a.cmpn(0) === 0)
++    return a.clone();
+ 
+-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
++  var mod3 = this.m.andln(3);
++  assert(mod3 % 2 === 1);
++
++  // Fast case
++  if (mod3 === 3) {
++    var pow = this.m.add(new BN(1)).ishrn(2);
++    var r = this.pow(a, pow);
++    return r;
+   }
+ 
+-  var i = 0
+-  var mul = 1
+-  var sub = value < 0 ? 1 : 0
+-  this[offset] = value & 0xFF
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
++  // Tonelli-Shanks algorithm (Totally unoptimized and slow)
++  //
++  // Find Q and S, that Q * 2 ^ S = (P - 1)
++  var q = this.m.subn(1);
++  var s = 0;
++  while (q.cmpn(0) !== 0 && q.andln(1) === 0) {
++    s++;
++    q.ishrn(1);
+   }
++  assert(q.cmpn(0) !== 0);
+ 
+-  return offset + byteLength
+-}
++  var one = new BN(1).toRed(this);
++  var nOne = one.redNeg();
+ 
+-Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) {
+-    var limit = Math.pow(2, 8 * byteLength - 1)
++  // Find quadratic non-residue
++  // NOTE: Max is such because of generalized Riemann hypothesis.
++  var lpow = this.m.subn(1).ishrn(1);
++  var z = this.m.bitLength();
++  z = new BN(2 * z * z).toRed(this);
++  while (this.pow(z, lpow).cmp(nOne) !== 0)
++    z.redIAdd(nOne);
+ 
+-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+-  }
++  var c = this.pow(z, q);
++  var r = this.pow(a, q.addn(1).ishrn(1));
++  var t = this.pow(a, q);
++  var m = s;
++  while (t.cmp(one) !== 0) {
++    var tmp = t;
++    for (var i = 0; tmp.cmp(one) !== 0; i++)
++      tmp = tmp.redSqr();
++    assert(i < m);
++    var b = this.pow(c, new BN(1).ishln(m - i - 1));
+ 
+-  var i = byteLength - 1
+-  var mul = 1
+-  var sub = value < 0 ? 1 : 0
+-  this[offset + i] = value & 0xFF
+-  while (--i >= 0 && (mul *= 0x100)) {
+-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
++    r = r.redMul(b);
++    c = b.redSqr();
++    t = t.redMul(c);
++    m = i;
+   }
+ 
+-  return offset + byteLength
+-}
+-
+-Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+-  if (value < 0) value = 0xff + value + 1
+-  this[offset] = (value & 0xff)
+-  return offset + 1
+-}
++  return r;
++};
+ 
+-Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
++Red.prototype.invm = function invm(a) {
++  var inv = a._invmp(this.m);
++  if (inv.sign) {
++    inv.sign = false;
++    return this.imod(inv).redNeg();
+   } else {
+-    objectWriteUInt16(this, value, offset, true)
++    return this.imod(inv);
+   }
+-  return offset + 2
+-}
++};
+ 
+-Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 8)
+-    this[offset + 1] = (value & 0xff)
+-  } else {
+-    objectWriteUInt16(this, value, offset, false)
+-  }
+-  return offset + 2
+-}
++Red.prototype.pow = function pow(a, num) {
++  var w = [];
+ 
+-Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
+-    this[offset + 2] = (value >>> 16)
+-    this[offset + 3] = (value >>> 24)
+-  } else {
+-    objectWriteUInt32(this, value, offset, true)
+-  }
+-  return offset + 4
+-}
++  if (num.cmpn(0) === 0)
++    return new BN(1);
+ 
+-Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+-  if (value < 0) value = 0xffffffff + value + 1
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 24)
+-    this[offset + 1] = (value >>> 16)
+-    this[offset + 2] = (value >>> 8)
+-    this[offset + 3] = (value & 0xff)
+-  } else {
+-    objectWriteUInt32(this, value, offset, false)
++  var q = num.clone();
++
++  while (q.cmpn(0) !== 0) {
++    w.push(q.andln(1));
++    q.ishrn(1);
+   }
+-  return offset + 4
+-}
+ 
+-function checkIEEE754 (buf, value, offset, ext, max, min) {
+-  if (offset + ext > buf.length) throw new RangeError('index out of range')
+-  if (offset < 0) throw new RangeError('index out of range')
+-}
++  // Skip leading zeroes
++  var res = a;
++  for (var i = 0; i < w.length; i++, res = this.sqr(res))
++    if (w[i] !== 0)
++      break;
+ 
+-function writeFloat (buf, value, offset, littleEndian, noAssert) {
+-  if (!noAssert) {
+-    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
++  if (++i < w.length) {
++    for (var q = this.sqr(res); i < w.length; i++, q = this.sqr(q)) {
++      if (w[i] === 0)
++        continue;
++      res = this.mul(res, q);
++    }
+   }
+-  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+-  return offset + 4
+-}
+ 
+-Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+-  return writeFloat(this, value, offset, true, noAssert)
+-}
++  return res;
++};
+ 
+-Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+-  return writeFloat(this, value, offset, false, noAssert)
+-}
++Red.prototype.convertTo = function convertTo(num) {
++  var r = num.mod(this.m);
++  if (r === num)
++    return r.clone();
++  else
++    return r;
++};
+ 
+-function writeDouble (buf, value, offset, littleEndian, noAssert) {
+-  if (!noAssert) {
+-    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
+-  }
+-  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+-  return offset + 8
+-}
++Red.prototype.convertFrom = function convertFrom(num) {
++  var res = num.clone();
++  res.red = null;
++  return res;
++};
+ 
+-Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+-  return writeDouble(this, value, offset, true, noAssert)
+-}
++//
++// Montgomery method engine
++//
+ 
+-Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+-  return writeDouble(this, value, offset, false, noAssert)
+-}
++BN.mont = function mont(num) {
++  return new Mont(num);
++};
+ 
+-// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+-Buffer.prototype.copy = function copy (target, targetStart, start, end) {
+-  if (!start) start = 0
+-  if (!end && end !== 0) end = this.length
+-  if (targetStart >= target.length) targetStart = target.length
+-  if (!targetStart) targetStart = 0
+-  if (end > 0 && end < start) end = start
++function Mont(m) {
++  Red.call(this, m);
+ 
+-  // Copy 0 bytes; we're done
+-  if (end === start) return 0
+-  if (target.length === 0 || this.length === 0) return 0
++  this.shift = this.m.bitLength();
++  if (this.shift % 26 !== 0)
++    this.shift += 26 - (this.shift % 26);
++  this.r = new BN(1).ishln(this.shift);
++  this.r2 = this.imod(this.r.sqr());
++  this.rinv = this.r._invmp(this.m);
+ 
+-  // Fatal error conditions
+-  if (targetStart < 0) {
+-    throw new RangeError('targetStart out of bounds')
+-  }
+-  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
+-  if (end < 0) throw new RangeError('sourceEnd out of bounds')
++  this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
++  this.minv.sign = true;
++  this.minv = this.minv.mod(this.r);
++}
++inherits(Mont, Red);
+ 
+-  // Are we oob?
+-  if (end > this.length) end = this.length
+-  if (target.length - targetStart < end - start) {
+-    end = target.length - targetStart + start
+-  }
++Mont.prototype.convertTo = function convertTo(num) {
++  return this.imod(num.shln(this.shift));
++};
+ 
+-  var len = end - start
+-  var i
++Mont.prototype.convertFrom = function convertFrom(num) {
++  var r = this.imod(num.mul(this.rinv));
++  r.red = null;
++  return r;
++};
+ 
+-  if (this === target && start < targetStart && targetStart < end) {
+-    // descending copy from end
+-    for (i = len - 1; i >= 0; i--) {
+-      target[i + targetStart] = this[i + start]
+-    }
+-  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
+-    // ascending copy from start
+-    for (i = 0; i < len; i++) {
+-      target[i + targetStart] = this[i + start]
+-    }
+-  } else {
+-    Uint8Array.prototype.set.call(
+-      target,
+-      this.subarray(start, start + len),
+-      targetStart
+-    )
++Mont.prototype.imul = function imul(a, b) {
++  if (a.cmpn(0) === 0 || b.cmpn(0) === 0) {
++    a.words[0] = 0;
++    a.length = 1;
++    return a;
+   }
+ 
+-  return len
+-}
++  var t = a.imul(b);
++  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
++  var u = t.isub(c).ishrn(this.shift);
++  var res = u;
++  if (u.cmp(this.m) >= 0)
++    res = u.isub(this.m);
++  else if (u.cmpn(0) < 0)
++    res = u.iadd(this.m);
+ 
+-// fill(value, start=0, end=buffer.length)
+-Buffer.prototype.fill = function fill (value, start, end) {
+-  if (!value) value = 0
+-  if (!start) start = 0
+-  if (!end) end = this.length
++  return res._forceRed(this);
++};
+ 
+-  if (end < start) throw new RangeError('end < start')
++Mont.prototype.mul = function mul(a, b) {
++  if (a.cmpn(0) === 0 || b.cmpn(0) === 0)
++    return new BN(0)._forceRed(this);
+ 
+-  // Fill 0 bytes; we're done
+-  if (end === start) return
+-  if (this.length === 0) return
++  var t = a.mul(b);
++  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
++  var u = t.isub(c).ishrn(this.shift);
++  var res = u;
++  if (u.cmp(this.m) >= 0)
++    res = u.isub(this.m);
++  else if (u.cmpn(0) < 0)
++    res = u.iadd(this.m);
+ 
+-  if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
+-  if (end < 0 || end > this.length) throw new RangeError('end out of bounds')
++  return res._forceRed(this);
++};
+ 
+-  var i
+-  if (typeof value === 'number') {
+-    for (i = start; i < end; i++) {
+-      this[i] = value
+-    }
+-  } else {
+-    var bytes = utf8ToBytes(value.toString())
+-    var len = bytes.length
+-    for (i = start; i < end; i++) {
+-      this[i] = bytes[i % len]
+-    }
+-  }
++Mont.prototype.invm = function invm(a) {
++  // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
++  var res = this.imod(a._invmp(this.m).mul(this.r2));
++  return res._forceRed(this);
++};
+ 
+-  return this
+-}
++})(typeof module === 'undefined' || module, this);
+ 
+-// HELPER FUNCTIONS
+-// ================
++},{}],37:[function(require,module,exports){
++'use strict'
+ 
+-var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
++module.exports = boundary
+ 
+-function base64clean (str) {
+-  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+-  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
+-  // Node converts strings with length < 2 to ''
+-  if (str.length < 2) return ''
+-  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+-  while (str.length % 4 !== 0) {
+-    str = str + '='
++function boundary (cells) {
++  var i, j, k
++  var n = cells.length
++  var sz = 0
++  for (i = 0; i < n; ++i) {
++    sz += cells[i].length
+   }
+-  return str
++  var result = new Array(sz)
++  var ptr = 0
++  for (i = 0; i < n; ++i) {
++    var c = cells[i]
++    var d = c.length
++    for (j = 0; j < d; ++j) {
++      var b = result[ptr++] = new Array(d - 1)
++      var p = 0
++      for (k = 0; k < d; ++k) {
++        if (k === j) {
++          continue
++        }
++        b[p++] = c[k]
++      }
++      if (j & 1) {
++        var tmp = b[1]
++        b[1] = b[0]
++        b[0] = tmp
++      }
++    }
++  }
++  return result
+ }
+ 
+-function stringtrim (str) {
+-  if (str.trim) return str.trim()
+-  return str.replace(/^\s+|\s+$/g, '')
++},{}],38:[function(require,module,exports){
++'use strict'
++
++module.exports = boxIntersectWrapper
++
++var pool = require('typedarray-pool')
++var sweep = require('./lib/sweep')
++var boxIntersectIter = require('./lib/intersect')
++
++function boxEmpty(d, box) {
++  for(var j=0; j<d; ++j) {
++    if(!(box[j] <= box[j+d])) {
++      return true
++    }
++  }
++  return false
+ }
+ 
+-function toHex (n) {
+-  if (n < 16) return '0' + n.toString(16)
+-  return n.toString(16)
++//Unpack boxes into a flat typed array, remove empty boxes
++function convertBoxes(boxes, d, data, ids) {
++  var ptr = 0
++  var count = 0
++  for(var i=0, n=boxes.length; i<n; ++i) {
++    var b = boxes[i]
++    if(boxEmpty(d, b)) {
++      continue
++    }
++    for(var j=0; j<2*d; ++j) {
++      data[ptr++] = b[j]
++    }
++    ids[count++] = i
++  }
++  return count
+ }
+ 
+-function utf8ToBytes (string, units) {
+-  units = units || Infinity
+-  var codePoint
+-  var length = string.length
+-  var leadSurrogate = null
+-  var bytes = []
++//Perform type conversions, check bounds
++function boxIntersect(red, blue, visit, full) {
++  var n = red.length
++  var m = blue.length
+ 
+-  for (var i = 0; i < length; i++) {
+-    codePoint = string.charCodeAt(i)
++  //If either array is empty, then we can skip this whole thing
++  if(n <= 0 || m <= 0) {
++    return
++  }
+ 
+-    // is surrogate component
+-    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+-      // last char was a lead
+-      if (!leadSurrogate) {
+-        // no lead yet
+-        if (codePoint > 0xDBFF) {
+-          // unexpected trail
+-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-          continue
+-        } else if (i + 1 === length) {
+-          // unpaired lead
+-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-          continue
+-        }
++  //Compute dimension, if it is 0 then we skip
++  var d = (red[0].length)>>>1
++  if(d <= 0) {
++    return
++  }
+ 
+-        // valid lead
+-        leadSurrogate = codePoint
++  var retval
+ 
+-        continue
+-      }
++  //Convert red boxes
++  var redList  = pool.mallocDouble(2*d*n)
++  var redIds   = pool.mallocInt32(n)
++  n = convertBoxes(red, d, redList, redIds)
+ 
+-      // 2 leads in a row
+-      if (codePoint < 0xDC00) {
+-        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-        leadSurrogate = codePoint
+-        continue
+-      }
++  if(n > 0) {
++    if(d === 1 && full) {
++      //Special case: 1d complete
++      sweep.init(n)
++      retval = sweep.sweepComplete(
++        d, visit, 
++        0, n, redList, redIds,
++        0, n, redList, redIds)
++    } else {
+ 
+-      // valid surrogate pair
+-      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
+-    } else if (leadSurrogate) {
+-      // valid bmp char, but last char was a lead
+-      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-    }
++      //Convert blue boxes
++      var blueList = pool.mallocDouble(2*d*m)
++      var blueIds  = pool.mallocInt32(m)
++      m = convertBoxes(blue, d, blueList, blueIds)
+ 
+-    leadSurrogate = null
++      if(m > 0) {
++        sweep.init(n+m)
+ 
+-    // encode utf8
+-    if (codePoint < 0x80) {
+-      if ((units -= 1) < 0) break
+-      bytes.push(codePoint)
+-    } else if (codePoint < 0x800) {
+-      if ((units -= 2) < 0) break
+-      bytes.push(
+-        codePoint >> 0x6 | 0xC0,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else if (codePoint < 0x10000) {
+-      if ((units -= 3) < 0) break
+-      bytes.push(
+-        codePoint >> 0xC | 0xE0,
+-        codePoint >> 0x6 & 0x3F | 0x80,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else if (codePoint < 0x110000) {
+-      if ((units -= 4) < 0) break
+-      bytes.push(
+-        codePoint >> 0x12 | 0xF0,
+-        codePoint >> 0xC & 0x3F | 0x80,
+-        codePoint >> 0x6 & 0x3F | 0x80,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else {
+-      throw new Error('Invalid code point')
++        if(d === 1) {
++          //Special case: 1d bipartite
++          retval = sweep.sweepBipartite(
++            d, visit, 
++            0, n, redList,  redIds,
++            0, m, blueList, blueIds)
++        } else {
++          //General case:  d>1
++          retval = boxIntersectIter(
++            d, visit,    full,
++            n, redList,  redIds,
++            m, blueList, blueIds)
++        }
++
++        pool.free(blueList)
++        pool.free(blueIds)
++      }
+     }
++
++    pool.free(redList)
++    pool.free(redIds)
+   }
+ 
+-  return bytes
++  return retval
+ }
+ 
+-function asciiToBytes (str) {
+-  var byteArray = []
+-  for (var i = 0; i < str.length; i++) {
+-    // Node's code seems to be doing this and not & 0x7F..
+-    byteArray.push(str.charCodeAt(i) & 0xFF)
+-  }
+-  return byteArray
+-}
+ 
+-function utf16leToBytes (str, units) {
+-  var c, hi, lo
+-  var byteArray = []
+-  for (var i = 0; i < str.length; i++) {
+-    if ((units -= 2) < 0) break
++var RESULT
+ 
+-    c = str.charCodeAt(i)
+-    hi = c >> 8
+-    lo = c % 256
+-    byteArray.push(lo)
+-    byteArray.push(hi)
+-  }
++function appendItem(i,j) {
++  RESULT.push([i,j])
++}
+ 
+-  return byteArray
++function intersectFullArray(x) {
++  RESULT = []
++  boxIntersect(x, x, appendItem, true)
++  return RESULT
+ }
+ 
+-function base64ToBytes (str) {
+-  return base64.toByteArray(base64clean(str))
++function intersectBipartiteArray(x, y) {
++  RESULT = []
++  boxIntersect(x, y, appendItem, false)
++  return RESULT
+ }
+ 
+-function blitBuffer (src, dst, offset, length) {
+-  for (var i = 0; i < length; i++) {
+-    if ((i + offset >= dst.length) || (i >= src.length)) break
+-    dst[i + offset] = src[i]
++//User-friendly wrapper, handle full input and no-visitor cases
++function boxIntersectWrapper(arg0, arg1, arg2) {
++  var result
++  switch(arguments.length) {
++    case 1:
++      return intersectFullArray(arg0)
++    case 2:
++      if(typeof arg1 === 'function') {
++        return boxIntersect(arg0, arg0, arg1, true)
++      } else {
++        return intersectBipartiteArray(arg0, arg1)
++      }
++    case 3:
++      return boxIntersect(arg0, arg1, arg2, false)
++    default:
++      throw new Error('box-intersect: Invalid arguments')
+   }
+-  return i
+ }
+-
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"base64-js":40,"ieee754":41,"isarray":42}],40:[function(require,module,exports){
++},{"./lib/intersect":40,"./lib/sweep":44,"typedarray-pool":246}],39:[function(require,module,exports){
+ 'use strict'
+ 
+-exports.toByteArray = toByteArray
+-exports.fromByteArray = fromByteArray
+-
+-var lookup = []
+-var revLookup = []
+-var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
++var DIMENSION   = 'd'
++var AXIS        = 'ax'
++var VISIT       = 'vv'
++var FLIP        = 'fp'
+ 
+-function init () {
+-  var i
+-  var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+-  var len = code.length
++var ELEM_SIZE   = 'es'
+ 
+-  for (i = 0; i < len; i++) {
+-    lookup[i] = code[i]
+-  }
++var RED_START   = 'rs'
++var RED_END     = 're'
++var RED_BOXES   = 'rb'
++var RED_INDEX   = 'ri'
++var RED_PTR     = 'rp'
+ 
+-  for (i = 0; i < len; ++i) {
+-    revLookup[code.charCodeAt(i)] = i
+-  }
+-  revLookup['-'.charCodeAt(0)] = 62
+-  revLookup['_'.charCodeAt(0)] = 63
+-}
++var BLUE_START  = 'bs'
++var BLUE_END    = 'be'
++var BLUE_BOXES  = 'bb'
++var BLUE_INDEX  = 'bi'
++var BLUE_PTR    = 'bp'
+ 
+-init()
++var RETVAL      = 'rv'
+ 
+-function toByteArray (b64) {
+-  var i, j, l, tmp, placeHolders, arr
+-  var len = b64.length
++var INNER_LABEL = 'Q'
+ 
+-  if (len % 4 > 0) {
+-    throw new Error('Invalid string. Length must be a multiple of 4')
+-  }
++var ARGS = [
++  DIMENSION,
++  AXIS,
++  VISIT,
++  RED_START,
++  RED_END,
++  RED_BOXES,
++  RED_INDEX,
++  BLUE_START,
++  BLUE_END,
++  BLUE_BOXES,
++  BLUE_INDEX
++]
+ 
+-  // the number of equal signs (place holders)
+-  // if there are two placeholders, than the two characters before it
+-  // represent one byte
+-  // if there is only one, then the three characters before it represent 2 bytes
+-  // this is just a cheap hack to not do indexOf twice
+-  placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
++function generateBruteForce(redMajor, flip, full) {
++  var funcName = 'bruteForce' + 
++    (redMajor ? 'Red' : 'Blue') + 
++    (flip ? 'Flip' : '') +
++    (full ? 'Full' : '')
+ 
+-  // base64 is 4/3 + up to two characters of the original data
+-  arr = new Arr(len * 3 / 4 - placeHolders)
++  var code = ['function ', funcName, '(', ARGS.join(), '){',
++    'var ', ELEM_SIZE, '=2*', DIMENSION, ';']
+ 
+-  // if there are placeholders, only get up to the last complete 4 chars
+-  l = placeHolders > 0 ? len - 4 : len
++  var redLoop = 
++    'for(var i=' + RED_START + ',' + RED_PTR + '=' + ELEM_SIZE + '*' + RED_START + ';' +
++        'i<' + RED_END +';' +
++        '++i,' + RED_PTR + '+=' + ELEM_SIZE + '){' +
++        'var x0=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '],' +
++            'x1=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '+' + DIMENSION + '],' +
++            'xi=' + RED_INDEX + '[i];'
+ 
+-  var L = 0
++  var blueLoop = 
++    'for(var j=' + BLUE_START + ',' + BLUE_PTR + '=' + ELEM_SIZE + '*' + BLUE_START + ';' +
++        'j<' + BLUE_END + ';' +
++        '++j,' + BLUE_PTR + '+=' + ELEM_SIZE + '){' +
++        'var y0=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '],' +
++            (full ? 'y1=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '+' + DIMENSION + '],' : '') +
++            'yi=' + BLUE_INDEX + '[j];'
+ 
+-  for (i = 0, j = 0; i < l; i += 4, j += 3) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
+-    arr[L++] = (tmp & 0xFF0000) >> 16
+-    arr[L++] = (tmp & 0xFF00) >> 8
+-    arr[L++] = tmp & 0xFF
++  if(redMajor) {
++    code.push(redLoop, INNER_LABEL, ':', blueLoop)
++  } else {
++    code.push(blueLoop, INNER_LABEL, ':', redLoop)
+   }
+ 
+-  if (placeHolders === 2) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
+-    arr[L++] = tmp & 0xFF
+-  } else if (placeHolders === 1) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
+-    arr[L++] = (tmp >> 8) & 0xFF
+-    arr[L++] = tmp & 0xFF
++  if(full) {
++    code.push('if(y1<x0||x1<y0)continue;')
++  } else if(flip) {
++    code.push('if(y0<=x0||x1<y0)continue;')
++  } else {
++    code.push('if(y0<x0||x1<y0)continue;')
+   }
+ 
+-  return arr
+-}
+-
+-function tripletToBase64 (num) {
+-  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
+-}
++  code.push('for(var k='+AXIS+'+1;k<'+DIMENSION+';++k){'+
++    'var r0='+RED_BOXES+'[k+'+RED_PTR+'],'+
++        'r1='+RED_BOXES+'[k+'+DIMENSION+'+'+RED_PTR+'],'+
++        'b0='+BLUE_BOXES+'[k+'+BLUE_PTR+'],'+
++        'b1='+BLUE_BOXES+'[k+'+DIMENSION+'+'+BLUE_PTR+'];'+
++      'if(r1<b0||b1<r0)continue ' + INNER_LABEL + ';}' +
++      'var ' + RETVAL + '=' + VISIT + '(')
+ 
+-function encodeChunk (uint8, start, end) {
+-  var tmp
+-  var output = []
+-  for (var i = start; i < end; i += 3) {
+-    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+-    output.push(tripletToBase64(tmp))
++  if(flip) {
++    code.push('yi,xi')
++  } else {
++    code.push('xi,yi')
+   }
+-  return output.join('')
+-}
+-
+-function fromByteArray (uint8) {
+-  var tmp
+-  var len = uint8.length
+-  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
+-  var output = ''
+-  var parts = []
+-  var maxChunkLength = 16383 // must be multiple of 3
+ 
+-  // go through the array every three bytes, we'll deal with trailing stuff later
+-  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+-    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+-  }
++  code.push(');if(' + RETVAL + '!==void 0)return ' + RETVAL + ';}}}')
+ 
+-  // pad the end with zeros, but make sure to not forget the extra bytes
+-  if (extraBytes === 1) {
+-    tmp = uint8[len - 1]
+-    output += lookup[tmp >> 2]
+-    output += lookup[(tmp << 4) & 0x3F]
+-    output += '=='
+-  } else if (extraBytes === 2) {
+-    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
+-    output += lookup[tmp >> 10]
+-    output += lookup[(tmp >> 4) & 0x3F]
+-    output += lookup[(tmp << 2) & 0x3F]
+-    output += '='
++  return {
++    name: funcName, 
++    code: code.join('')
+   }
+-
+-  parts.push(output)
+-
+-  return parts.join('')
+ }
+ 
+-},{}],41:[function(require,module,exports){
+-exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+-  var e, m
+-  var eLen = nBytes * 8 - mLen - 1
+-  var eMax = (1 << eLen) - 1
+-  var eBias = eMax >> 1
+-  var nBits = -7
+-  var i = isLE ? (nBytes - 1) : 0
+-  var d = isLE ? -1 : 1
+-  var s = buffer[offset + i]
++function bruteForcePlanner(full) {
++  var funcName = 'bruteForce' + (full ? 'Full' : 'Partial')
++  var prefix = []
++  var fargs = ARGS.slice()
++  if(!full) {
++    fargs.splice(3, 0, FLIP)
++  }
+ 
+-  i += d
++  var code = ['function ' + funcName + '(' + fargs.join() + '){']
+ 
+-  e = s & ((1 << (-nBits)) - 1)
+-  s >>= (-nBits)
+-  nBits += eLen
+-  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
++  function invoke(redMajor, flip) {
++    var res = generateBruteForce(redMajor, flip, full)
++    prefix.push(res.code)
++    code.push('return ' + res.name + '(' + ARGS.join() + ');')
++  }
+ 
+-  m = e & ((1 << (-nBits)) - 1)
+-  e >>= (-nBits)
+-  nBits += mLen
+-  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
++  code.push('if(' + RED_END + '-' + RED_START + '>' +
++                    BLUE_END + '-' + BLUE_START + '){')
+ 
+-  if (e === 0) {
+-    e = 1 - eBias
+-  } else if (e === eMax) {
+-    return m ? NaN : ((s ? -1 : 1) * Infinity)
++  if(full) {
++    invoke(true, false)
++    code.push('}else{')
++    invoke(false, false)
+   } else {
+-    m = m + Math.pow(2, mLen)
+-    e = e - eBias
++    code.push('if(' + FLIP + '){')
++    invoke(true, true)
++    code.push('}else{')
++    invoke(true, false)
++    code.push('}}else{if(' + FLIP + '){')
++    invoke(false, true)
++    code.push('}else{')
++    invoke(false, false)
++    code.push('}')
+   }
+-  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
++  code.push('}}return ' + funcName)
++
++  var codeStr = prefix.join('') + code.join('')
++  var proc = new Function(codeStr)
++  return proc()
+ }
+ 
+-exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+-  var e, m, c
+-  var eLen = nBytes * 8 - mLen - 1
+-  var eMax = (1 << eLen) - 1
+-  var eBias = eMax >> 1
+-  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+-  var i = isLE ? 0 : (nBytes - 1)
+-  var d = isLE ? 1 : -1
+-  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+ 
+-  value = Math.abs(value)
++exports.partial = bruteForcePlanner(false)
++exports.full    = bruteForcePlanner(true)
++},{}],40:[function(require,module,exports){
++'use strict'
+ 
+-  if (isNaN(value) || value === Infinity) {
+-    m = isNaN(value) ? 1 : 0
+-    e = eMax
+-  } else {
+-    e = Math.floor(Math.log(value) / Math.LN2)
+-    if (value * (c = Math.pow(2, -e)) < 1) {
+-      e--
+-      c *= 2
+-    }
+-    if (e + eBias >= 1) {
+-      value += rt / c
+-    } else {
+-      value += rt * Math.pow(2, 1 - eBias)
+-    }
+-    if (value * c >= 2) {
+-      e++
+-      c /= 2
+-    }
++module.exports = boxIntersectIter
+ 
+-    if (e + eBias >= eMax) {
+-      m = 0
+-      e = eMax
+-    } else if (e + eBias >= 1) {
+-      m = (value * c - 1) * Math.pow(2, mLen)
+-      e = e + eBias
+-    } else {
+-      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+-      e = 0
+-    }
+-  }
++var pool = require('typedarray-pool')
++var bits = require('bit-twiddle')
++var bruteForce = require('./brute')
++var bruteForcePartial = bruteForce.partial
++var bruteForceFull = bruteForce.full
++var sweep = require('./sweep')
++var findMedian = require('./median')
++var genPartition = require('./partition')
+ 
+-  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
++//Twiddle parameters
++var BRUTE_FORCE_CUTOFF    = 128       //Cut off for brute force search
++var SCAN_CUTOFF           = (1<<22)   //Cut off for two way scan
++var SCAN_COMPLETE_CUTOFF  = (1<<22)  
+ 
+-  e = (e << mLen) | m
+-  eLen += mLen
+-  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
++//Partition functions
++var partitionInteriorContainsInterval = genPartition(
++  '!(lo>=p0)&&!(p1>=hi)', 
++  ['p0', 'p1'])
+ 
+-  buffer[offset + i - d] |= s * 128
+-}
++var partitionStartEqual = genPartition(
++  'lo===p0',
++  ['p0'])
+ 
+-},{}],42:[function(require,module,exports){
+-var toString = {}.toString;
++var partitionStartLessThan = genPartition(
++  'lo<p0',
++  ['p0'])
+ 
+-module.exports = Array.isArray || function (arr) {
+-  return toString.call(arr) == '[object Array]';
+-};
++var partitionEndLessThanEqual = genPartition(
++  'hi<=p0',
++  ['p0'])
+ 
+-},{}],43:[function(require,module,exports){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+-
+-function EventEmitter() {
+-  this._events = this._events || {};
+-  this._maxListeners = this._maxListeners || undefined;
+-}
+-module.exports = EventEmitter;
++var partitionContainsPoint = genPartition(
++  'lo<=p0&&p0<=hi',
++  ['p0'])
+ 
+-// Backwards-compat with node 0.10.x
+-EventEmitter.EventEmitter = EventEmitter;
++var partitionContainsPointProper = genPartition(
++  'lo<p0&&p0<=hi',
++  ['p0'])
+ 
+-EventEmitter.prototype._events = undefined;
+-EventEmitter.prototype._maxListeners = undefined;
++//Frame size for iterative loop
++var IFRAME_SIZE = 6
++var DFRAME_SIZE = 2
+ 
+-// By default EventEmitters will print a warning if more than 10 listeners are
+-// added to it. This is a useful default which helps finding memory leaks.
+-EventEmitter.defaultMaxListeners = 10;
++//Data for box statck
++var INIT_CAPACITY = 1024
++var BOX_ISTACK  = pool.mallocInt32(INIT_CAPACITY)
++var BOX_DSTACK  = pool.mallocDouble(INIT_CAPACITY)
+ 
+-// Obviously not all Emitters should be limited to 10. This function allows
+-// that to be increased. Set to zero for unlimited.
+-EventEmitter.prototype.setMaxListeners = function(n) {
+-  if (!isNumber(n) || n < 0 || isNaN(n))
+-    throw TypeError('n must be a positive number');
+-  this._maxListeners = n;
+-  return this;
+-};
++//Initialize iterative loop queue
++function iterInit(d, count) {
++  var levels = (8 * bits.log2(count+1) * (d+1))|0
++  var maxInts = bits.nextPow2(IFRAME_SIZE*levels)
++  if(BOX_ISTACK.length < maxInts) {
++    pool.free(BOX_ISTACK)
++    BOX_ISTACK = pool.mallocInt32(maxInts)
++  }
++  var maxDoubles = bits.nextPow2(DFRAME_SIZE*levels)
++  if(BOX_DSTACK < maxDoubles) {
++    pool.free(BOX_DSTACK)
++    BOX_DSTACK = pool.mallocDouble(maxDoubles)
++  }
++}
+ 
+-EventEmitter.prototype.emit = function(type) {
+-  var er, handler, len, args, i, listeners;
++//Append item to queue
++function iterPush(ptr,
++  axis, 
++  redStart, redEnd, 
++  blueStart, blueEnd, 
++  state, 
++  lo, hi) {
+ 
+-  if (!this._events)
+-    this._events = {};
++  var iptr = IFRAME_SIZE * ptr
++  BOX_ISTACK[iptr]   = axis
++  BOX_ISTACK[iptr+1] = redStart
++  BOX_ISTACK[iptr+2] = redEnd
++  BOX_ISTACK[iptr+3] = blueStart
++  BOX_ISTACK[iptr+4] = blueEnd
++  BOX_ISTACK[iptr+5] = state
+ 
+-  // If there is no 'error' event listener then throw.
+-  if (type === 'error') {
+-    if (!this._events.error ||
+-        (isObject(this._events.error) && !this._events.error.length)) {
+-      er = arguments[1];
+-      if (er instanceof Error) {
+-        throw er; // Unhandled 'error' event
+-      }
+-      throw TypeError('Uncaught, unspecified "error" event.');
+-    }
+-  }
++  var dptr = DFRAME_SIZE * ptr
++  BOX_DSTACK[dptr]   = lo
++  BOX_DSTACK[dptr+1] = hi
++}
+ 
+-  handler = this._events[type];
++//Special case:  Intersect single point with list of intervals
++function onePointPartial(
++  d, axis, visit, flip,
++  redStart, redEnd, red, redIndex,
++  blueOffset, blue, blueId) {
+ 
+-  if (isUndefined(handler))
+-    return false;
++  var elemSize = 2 * d
++  var bluePtr  = blueOffset * elemSize
++  var blueX    = blue[bluePtr + axis]
+ 
+-  if (isFunction(handler)) {
+-    switch (arguments.length) {
+-      // fast cases
+-      case 1:
+-        handler.call(this);
+-        break;
+-      case 2:
+-        handler.call(this, arguments[1]);
+-        break;
+-      case 3:
+-        handler.call(this, arguments[1], arguments[2]);
+-        break;
+-      // slower
+-      default:
+-        args = Array.prototype.slice.call(arguments, 1);
+-        handler.apply(this, args);
++red_loop:
++  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
++    var r0 = red[redPtr+axis]
++    var r1 = red[redPtr+axis+d]
++    if(blueX < r0 || r1 < blueX) {
++      continue
++    }
++    if(flip && blueX === r0) {
++      continue
++    }
++    var redId = redIndex[i]
++    for(var j=axis+1; j<d; ++j) {
++      var r0 = red[redPtr+j]
++      var r1 = red[redPtr+j+d]
++      var b0 = blue[bluePtr+j]
++      var b1 = blue[bluePtr+j+d]
++      if(r1 < b0 || b1 < r0) {
++        continue red_loop
++      }
++    }
++    var retval
++    if(flip) {
++      retval = visit(blueId, redId)
++    } else {
++      retval = visit(redId, blueId)
++    }
++    if(retval !== void 0) {
++      return retval
+     }
+-  } else if (isObject(handler)) {
+-    args = Array.prototype.slice.call(arguments, 1);
+-    listeners = handler.slice();
+-    len = listeners.length;
+-    for (i = 0; i < len; i++)
+-      listeners[i].apply(this, args);
+   }
++}
+ 
+-  return true;
+-};
+-
+-EventEmitter.prototype.addListener = function(type, listener) {
+-  var m;
+-
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  if (!this._events)
+-    this._events = {};
+-
+-  // To avoid recursion in the case that type === "newListener"! Before
+-  // adding it to the listeners, first emit "newListener".
+-  if (this._events.newListener)
+-    this.emit('newListener', type,
+-              isFunction(listener.listener) ?
+-              listener.listener : listener);
++//Special case:  Intersect one point with list of intervals
++function onePointFull(
++  d, axis, visit,
++  redStart, redEnd, red, redIndex,
++  blueOffset, blue, blueId) {
+ 
+-  if (!this._events[type])
+-    // Optimize the case of one listener. Don't need the extra array object.
+-    this._events[type] = listener;
+-  else if (isObject(this._events[type]))
+-    // If we've already got an array, just append.
+-    this._events[type].push(listener);
+-  else
+-    // Adding the second element, need to change to array.
+-    this._events[type] = [this._events[type], listener];
++  var elemSize = 2 * d
++  var bluePtr  = blueOffset * elemSize
++  var blueX    = blue[bluePtr + axis]
+ 
+-  // Check for listener leak
+-  if (isObject(this._events[type]) && !this._events[type].warned) {
+-    if (!isUndefined(this._maxListeners)) {
+-      m = this._maxListeners;
+-    } else {
+-      m = EventEmitter.defaultMaxListeners;
++red_loop:
++  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
++    var redId = redIndex[i]
++    if(redId === blueId) {
++      continue
+     }
+-
+-    if (m && m > 0 && this._events[type].length > m) {
+-      this._events[type].warned = true;
+-      console.error('(node) warning: possible EventEmitter memory ' +
+-                    'leak detected. %d listeners added. ' +
+-                    'Use emitter.setMaxListeners() to increase limit.',
+-                    this._events[type].length);
+-      if (typeof console.trace === 'function') {
+-        // not supported in IE 10
+-        console.trace();
++    var r0 = red[redPtr+axis]
++    var r1 = red[redPtr+axis+d]
++    if(blueX < r0 || r1 < blueX) {
++      continue
++    }
++    for(var j=axis+1; j<d; ++j) {
++      var r0 = red[redPtr+j]
++      var r1 = red[redPtr+j+d]
++      var b0 = blue[bluePtr+j]
++      var b1 = blue[bluePtr+j+d]
++      if(r1 < b0 || b1 < r0) {
++        continue red_loop
+       }
+     }
++    var retval = visit(redId, blueId)
++    if(retval !== void 0) {
++      return retval
++    }
+   }
++}
+ 
+-  return this;
+-};
+-
+-EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+-
+-EventEmitter.prototype.once = function(type, listener) {
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
++//The main box intersection routine
++function boxIntersectIter(
++  d, visit, initFull,
++  xSize, xBoxes, xIndex,
++  ySize, yBoxes, yIndex) {
+ 
+-  var fired = false;
++  //Reserve memory for stack
++  iterInit(d, xSize + ySize)
+ 
+-  function g() {
+-    this.removeListener(type, g);
++  var top  = 0
++  var elemSize = 2 * d
++  var retval
+ 
+-    if (!fired) {
+-      fired = true;
+-      listener.apply(this, arguments);
+-    }
++  iterPush(top++,
++      0,
++      0, xSize,
++      0, ySize,
++      initFull ? 16 : 0, 
++      -Infinity, Infinity)
++  if(!initFull) {
++    iterPush(top++,
++      0,
++      0, ySize,
++      0, xSize,
++      1, 
++      -Infinity, Infinity)
+   }
+ 
+-  g.listener = listener;
+-  this.on(type, g);
+-
+-  return this;
+-};
+-
+-// emits a 'removeListener' event iff the listener was removed
+-EventEmitter.prototype.removeListener = function(type, listener) {
+-  var list, position, length, i;
++  while(top > 0) {
++    top  -= 1
+ 
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
++    var iptr = top * IFRAME_SIZE
++    var axis      = BOX_ISTACK[iptr]
++    var redStart  = BOX_ISTACK[iptr+1]
++    var redEnd    = BOX_ISTACK[iptr+2]
++    var blueStart = BOX_ISTACK[iptr+3]
++    var blueEnd   = BOX_ISTACK[iptr+4]
++    var state     = BOX_ISTACK[iptr+5]
+ 
+-  if (!this._events || !this._events[type])
+-    return this;
++    var dptr = top * DFRAME_SIZE
++    var lo        = BOX_DSTACK[dptr]
++    var hi        = BOX_DSTACK[dptr+1]
+ 
+-  list = this._events[type];
+-  length = list.length;
+-  position = -1;
++    //Unpack state info
++    var flip      = (state & 1)
++    var full      = !!(state & 16)
+ 
+-  if (list === listener ||
+-      (isFunction(list.listener) && list.listener === listener)) {
+-    delete this._events[type];
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
++    //Unpack indices
++    var red       = xBoxes
++    var redIndex  = xIndex
++    var blue      = yBoxes
++    var blueIndex = yIndex
++    if(flip) {
++      red         = yBoxes
++      redIndex    = yIndex
++      blue        = xBoxes
++      blueIndex   = xIndex
++    }
+ 
+-  } else if (isObject(list)) {
+-    for (i = length; i-- > 0;) {
+-      if (list[i] === listener ||
+-          (list[i].listener && list[i].listener === listener)) {
+-        position = i;
+-        break;
++    if(state & 2) {
++      redEnd = partitionStartLessThan(
++        d, axis,
++        redStart, redEnd, red, redIndex,
++        hi)
++      if(redStart >= redEnd) {
++        continue
+       }
+     }
++    if(state & 4) {
++      redStart = partitionEndLessThanEqual(
++        d, axis,
++        redStart, redEnd, red, redIndex,
++        lo)
++      if(redStart >= redEnd) {
++        continue
++      }
++    }
++    
++    var redCount  = redEnd  - redStart
++    var blueCount = blueEnd - blueStart
+ 
+-    if (position < 0)
+-      return this;
+-
+-    if (list.length === 1) {
+-      list.length = 0;
+-      delete this._events[type];
++    if(full) {
++      if(d * redCount * (redCount + blueCount) < SCAN_COMPLETE_CUTOFF) {
++        retval = sweep.scanComplete(
++          d, axis, visit, 
++          redStart, redEnd, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      }
+     } else {
+-      list.splice(position, 1);
++      if(d * Math.min(redCount, blueCount) < BRUTE_FORCE_CUTOFF) {
++        //If input small, then use brute force
++        retval = bruteForcePartial(
++            d, axis, visit, flip,
++            redStart,  redEnd,  red,  redIndex,
++            blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      } else if(d * redCount * blueCount < SCAN_CUTOFF) {
++        //If input medium sized, then use sweep and prune
++        retval = sweep.scanBipartite(
++          d, axis, visit, flip, 
++          redStart, redEnd, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      }
+     }
++    
++    //First, find all red intervals whose interior contains (lo,hi)
++    var red0 = partitionInteriorContainsInterval(
++      d, axis, 
++      redStart, redEnd, red, redIndex,
++      lo, hi)
+ 
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+-  }
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.removeAllListeners = function(type) {
+-  var key, listeners;
+-
+-  if (!this._events)
+-    return this;
+-
+-  // not listening for removeListener, no need to emit
+-  if (!this._events.removeListener) {
+-    if (arguments.length === 0)
+-      this._events = {};
+-    else if (this._events[type])
+-      delete this._events[type];
+-    return this;
+-  }
++    //Lower dimensional case
++    if(redStart < red0) {
+ 
+-  // emit removeListener for all listeners on all events
+-  if (arguments.length === 0) {
+-    for (key in this._events) {
+-      if (key === 'removeListener') continue;
+-      this.removeAllListeners(key);
++      if(d * (red0 - redStart) < BRUTE_FORCE_CUTOFF) {
++        //Special case for small inputs: use brute force
++        retval = bruteForceFull(
++          d, axis+1, visit,
++          redStart, red0, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++      } else if(axis === d-2) {
++        if(flip) {
++          retval = sweep.sweepBipartite(
++            d, visit,
++            blueStart, blueEnd, blue, blueIndex,
++            redStart, red0, red, redIndex)
++        } else {
++          retval = sweep.sweepBipartite(
++            d, visit,
++            redStart, red0, red, redIndex,
++            blueStart, blueEnd, blue, blueIndex)
++        }
++        if(retval !== void 0) {
++          return retval
++        }
++      } else {
++        iterPush(top++,
++          axis+1,
++          redStart, red0,
++          blueStart, blueEnd,
++          flip,
++          -Infinity, Infinity)
++        iterPush(top++,
++          axis+1,
++          blueStart, blueEnd,
++          redStart, red0,
++          flip^1,
++          -Infinity, Infinity)
++      }
+     }
+-    this.removeAllListeners('removeListener');
+-    this._events = {};
+-    return this;
+-  }
+-
+-  listeners = this._events[type];
+-
+-  if (isFunction(listeners)) {
+-    this.removeListener(type, listeners);
+-  } else if (listeners) {
+-    // LIFO order
+-    while (listeners.length)
+-      this.removeListener(type, listeners[listeners.length - 1]);
+-  }
+-  delete this._events[type];
+ 
+-  return this;
+-};
++    //Divide and conquer phase
++    if(red0 < redEnd) {
+ 
+-EventEmitter.prototype.listeners = function(type) {
+-  var ret;
+-  if (!this._events || !this._events[type])
+-    ret = [];
+-  else if (isFunction(this._events[type]))
+-    ret = [this._events[type]];
+-  else
+-    ret = this._events[type].slice();
+-  return ret;
+-};
++      //Cut blue into 3 parts:
++      //
++      //  Points < mid point
++      //  Points = mid point
++      //  Points > mid point
++      //
++      var blue0 = findMedian(
++        d, axis, 
++        blueStart, blueEnd, blue, blueIndex)
++      var mid = blue[elemSize * blue0 + axis]
++      var blue1 = partitionStartEqual(
++        d, axis,
++        blue0, blueEnd, blue, blueIndex,
++        mid)
+ 
+-EventEmitter.prototype.listenerCount = function(type) {
+-  if (this._events) {
+-    var evlistener = this._events[type];
++      //Right case
++      if(blue1 < blueEnd) {
++        iterPush(top++,
++          axis,
++          red0, redEnd,
++          blue1, blueEnd,
++          (flip|4) + (full ? 16 : 0),
++          mid, hi)
++      }
+ 
+-    if (isFunction(evlistener))
+-      return 1;
+-    else if (evlistener)
+-      return evlistener.length;
+-  }
+-  return 0;
+-};
+-
+-EventEmitter.listenerCount = function(emitter, type) {
+-  return emitter.listenerCount(type);
+-};
++      //Left case
++      if(blueStart < blue0) {
++        iterPush(top++,
++          axis,
++          red0, redEnd,
++          blueStart, blue0,
++          (flip|2) + (full ? 16 : 0),
++          lo, mid)
++      }
+ 
+-function isFunction(arg) {
+-  return typeof arg === 'function';
+-}
++      //Center case (the hard part)
++      if(blue0 + 1 === blue1) {
++        //Optimization: Range with exactly 1 point, use a brute force scan
++        if(full) {
++          retval = onePointFull(
++            d, axis, visit,
++            red0, redEnd, red, redIndex,
++            blue0, blue, blueIndex[blue0])
++        } else {
++          retval = onePointPartial(
++            d, axis, visit, flip,
++            red0, redEnd, red, redIndex,
++            blue0, blue, blueIndex[blue0])
++        }
++        if(retval !== void 0) {
++          return retval
++        }
++      } else if(blue0 < blue1) {
++        var red1
++        if(full) {
++          //If full intersection, need to handle special case
++          red1 = partitionContainsPoint(
++            d, axis,
++            red0, redEnd, red, redIndex,
++            mid)
++          if(red0 < red1) {
++            var redX = partitionStartEqual(
++              d, axis,
++              red0, red1, red, redIndex,
++              mid)
++            if(axis === d-2) {
++              //Degenerate sweep intersection:
++              //  [red0, redX] with [blue0, blue1]
++              if(red0 < redX) {
++                retval = sweep.sweepComplete(
++                  d, visit,
++                  red0, redX, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++                if(retval !== void 0) {
++                  return retval
++                }
++              }
+ 
+-function isNumber(arg) {
+-  return typeof arg === 'number';
++              //Normal sweep intersection:
++              //  [redX, red1] with [blue0, blue1]
++              if(redX < red1) {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  redX, red1, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++                if(retval !== void 0) {
++                  return retval
++                }
++              }
++            } else {
++              if(red0 < redX) {
++                iterPush(top++,
++                  axis+1,
++                  red0, redX,
++                  blue0, blue1,
++                  16,
++                  -Infinity, Infinity)
++              }
++              if(redX < red1) {
++                iterPush(top++,
++                  axis+1,
++                  redX, red1,
++                  blue0, blue1,
++                  0,
++                  -Infinity, Infinity)
++                iterPush(top++,
++                  axis+1,
++                  blue0, blue1,
++                  redX, red1,
++                  1,
++                  -Infinity, Infinity)
++              }
++            }
++          }
++        } else {
++          if(flip) {
++            red1 = partitionContainsPointProper(
++              d, axis,
++              red0, redEnd, red, redIndex,
++              mid)
++          } else {
++            red1 = partitionContainsPoint(
++              d, axis,
++              red0, redEnd, red, redIndex,
++              mid)
++          }
++          if(red0 < red1) {
++            if(axis === d-2) {
++              if(flip) {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  blue0, blue1, blue, blueIndex,
++                  red0, red1, red, redIndex)
++              } else {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  red0, red1, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++              }
++            } else {
++              iterPush(top++,
++                axis+1,
++                red0, red1,
++                blue0, blue1,
++                flip,
++                -Infinity, Infinity)
++              iterPush(top++,
++                axis+1,
++                blue0, blue1,
++                red0, red1,
++                flip^1,
++                -Infinity, Infinity)
++            }
++          }
++        }
++      }
++    }
++  }
+ }
++},{"./brute":39,"./median":41,"./partition":42,"./sweep":44,"bit-twiddle":35,"typedarray-pool":246}],41:[function(require,module,exports){
++'use strict'
+ 
+-function isObject(arg) {
+-  return typeof arg === 'object' && arg !== null;
+-}
++module.exports = findMedian
+ 
+-function isUndefined(arg) {
+-  return arg === void 0;
+-}
++var genPartition = require('./partition')
+ 
+-},{}],44:[function(require,module,exports){
+-// shim for using process in browser
++var partitionStartLessThan = genPartition('lo<p0', ['p0'])
+ 
+-var process = module.exports = {};
+-var queue = [];
+-var draining = false;
+-var currentQueue;
+-var queueIndex = -1;
++var PARTITION_THRESHOLD = 8   //Cut off for using insertion sort in findMedian
+ 
+-function cleanUpNextTick() {
+-    draining = false;
+-    if (currentQueue.length) {
+-        queue = currentQueue.concat(queue);
+-    } else {
+-        queueIndex = -1;
+-    }
+-    if (queue.length) {
+-        drainQueue();
++//Base case for median finding:  Use insertion sort
++function insertionSort(d, axis, start, end, boxes, ids) {
++  var elemSize = 2 * d
++  var boxPtr = elemSize * (start+1) + axis
++  for(var i=start+1; i<end; ++i, boxPtr+=elemSize) {
++    var x = boxes[boxPtr]
++    for(var j=i, ptr=elemSize*(i-1); 
++        j>start && boxes[ptr+axis] > x; 
++        --j, ptr-=elemSize) {
++      //Swap
++      var aPtr = ptr
++      var bPtr = ptr+elemSize
++      for(var k=0; k<elemSize; ++k, ++aPtr, ++bPtr) {
++        var y = boxes[aPtr]
++        boxes[aPtr] = boxes[bPtr]
++        boxes[bPtr] = y
++      }
++      var tmp = ids[j]
++      ids[j] = ids[j-1]
++      ids[j-1] = tmp
+     }
++  }
+ }
+ 
+-function drainQueue() {
+-    if (draining) {
+-        return;
+-    }
+-    var timeout = setTimeout(cleanUpNextTick);
+-    draining = true;
+-
+-    var len = queue.length;
+-    while(len) {
+-        currentQueue = queue;
+-        queue = [];
+-        while (++queueIndex < len) {
+-            if (currentQueue) {
+-                currentQueue[queueIndex].run();
+-            }
+-        }
+-        queueIndex = -1;
+-        len = queue.length;
+-    }
+-    currentQueue = null;
+-    draining = false;
+-    clearTimeout(timeout);
+-}
++//Find median using quick select algorithm
++//  takes O(n) time with high probability
++function findMedian(d, axis, start, end, boxes, ids) {
++  if(end <= start+1) {
++    return start
++  }
+ 
+-process.nextTick = function (fun) {
+-    var args = new Array(arguments.length - 1);
+-    if (arguments.length > 1) {
+-        for (var i = 1; i < arguments.length; i++) {
+-            args[i - 1] = arguments[i];
+-        }
++  var lo       = start
++  var hi       = end
++  var mid      = ((end + start) >>> 1)
++  var elemSize = 2*d
++  var pivot    = mid
++  var value    = boxes[elemSize*mid+axis]
++  
++  while(lo < hi) {
++    if(hi - lo < PARTITION_THRESHOLD) {
++      insertionSort(d, axis, lo, hi, boxes, ids)
++      value = boxes[elemSize*mid+axis]
++      break
+     }
+-    queue.push(new Item(fun, args));
+-    if (queue.length === 1 && !draining) {
+-        setTimeout(drainQueue, 0);
++    
++    //Select pivot using median-of-3
++    var count  = hi - lo
++    var pivot0 = (Math.random()*count+lo)|0
++    var value0 = boxes[elemSize*pivot0 + axis]
++    var pivot1 = (Math.random()*count+lo)|0
++    var value1 = boxes[elemSize*pivot1 + axis]
++    var pivot2 = (Math.random()*count+lo)|0
++    var value2 = boxes[elemSize*pivot2 + axis]
++    if(value0 <= value1) {
++      if(value2 >= value1) {
++        pivot = pivot1
++        value = value1
++      } else if(value0 >= value2) {
++        pivot = pivot0
++        value = value0
++      } else {
++        pivot = pivot2
++        value = value2
++      }
++    } else {
++      if(value1 >= value2) {
++        pivot = pivot1
++        value = value1
++      } else if(value2 >= value0) {
++        pivot = pivot0
++        value = value0
++      } else {
++        pivot = pivot2
++        value = value2
++      }
+     }
+-};
+-
+-// v8 likes predictible objects
+-function Item(fun, array) {
+-    this.fun = fun;
+-    this.array = array;
+-}
+-Item.prototype.run = function () {
+-    this.fun.apply(null, this.array);
+-};
+-process.title = 'browser';
+-process.browser = true;
+-process.env = {};
+-process.argv = [];
+-process.version = ''; // empty string to avoid regexp issues
+-process.versions = {};
+ 
+-function noop() {}
++    //Swap pivot to end of array
++    var aPtr = elemSize * (hi-1)
++    var bPtr = elemSize * pivot
++    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
++      var x = boxes[aPtr]
++      boxes[aPtr] = boxes[bPtr]
++      boxes[bPtr] = x
++    }
++    var y = ids[hi-1]
++    ids[hi-1] = ids[pivot]
++    ids[pivot] = y
+ 
+-process.on = noop;
+-process.addListener = noop;
+-process.once = noop;
+-process.off = noop;
+-process.removeListener = noop;
+-process.removeAllListeners = noop;
+-process.emit = noop;
++    //Partition using pivot
++    pivot = partitionStartLessThan(
++      d, axis, 
++      lo, hi-1, boxes, ids,
++      value)
+ 
+-process.binding = function (name) {
+-    throw new Error('process.binding is not supported');
+-};
++    //Swap pivot back
++    var aPtr = elemSize * (hi-1)
++    var bPtr = elemSize * pivot
++    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
++      var x = boxes[aPtr]
++      boxes[aPtr] = boxes[bPtr]
++      boxes[bPtr] = x
++    }
++    var y = ids[hi-1]
++    ids[hi-1] = ids[pivot]
++    ids[pivot] = y
+ 
+-process.cwd = function () { return '/' };
+-process.chdir = function (dir) {
+-    throw new Error('process.chdir is not supported');
+-};
+-process.umask = function() { return 0; };
++    //Swap pivot to last pivot
++    if(mid < pivot) {
++      hi = pivot-1
++      while(lo < hi && 
++        boxes[elemSize*(hi-1)+axis] === value) {
++        hi -= 1
++      }
++      hi += 1
++    } else if(pivot < mid) {
++      lo = pivot + 1
++      while(lo < hi &&
++        boxes[elemSize*lo+axis] === value) {
++        lo += 1
++      }
++    } else {
++      break
++    }
++  }
+ 
+-},{}],45:[function(require,module,exports){
++  //Make sure pivot is at start
++  return partitionStartLessThan(
++    d, axis, 
++    start, mid, boxes, ids,
++    boxes[elemSize*mid+axis])
++}
++},{"./partition":42}],42:[function(require,module,exports){
+ 'use strict'
+ 
+-var monotoneTriangulate = require('./lib/monotone')
+-var makeIndex = require('./lib/triangulation')
+-var delaunayFlip = require('./lib/delaunay')
+-var filterTriangulation = require('./lib/filter')
+-
+-module.exports = cdt2d
++module.exports = genPartition
+ 
+-function canonicalizeEdge(e) {
+-  return [Math.min(e[0], e[1]), Math.max(e[0], e[1])]
+-}
++var code = 'for(var j=2*a,k=j*c,l=k,m=c,n=b,o=a+b,p=c;d>p;++p,k+=j){var _;if($)if(m===p)m+=1,l+=j;else{for(var s=0;j>s;++s){var t=e[k+s];e[k+s]=e[l],e[l++]=t}var u=f[p];f[p]=f[m],f[m++]=u}}return m'
+ 
+-function compareEdge(a, b) {
+-  return a[0]-b[0] || a[1]-b[1]
++function genPartition(predicate, args) {
++  var fargs ='abcdef'.split('').concat(args)
++  var reads = []
++  if(predicate.indexOf('lo') >= 0) {
++    reads.push('lo=e[k+n]')
++  }
++  if(predicate.indexOf('hi') >= 0) {
++    reads.push('hi=e[k+o]')
++  }
++  fargs.push(
++    code.replace('_', reads.join())
++        .replace('$', predicate))
++  return Function.apply(void 0, fargs)
+ }
++},{}],43:[function(require,module,exports){
++'use strict';
+ 
+-function canonicalizeEdges(edges) {
+-  return edges.map(canonicalizeEdge).sort(compareEdge)
+-}
++//This code is extracted from ndarray-sort
++//It is inlined here as a temporary workaround
+ 
+-function getDefault(options, property, dflt) {
+-  if(property in options) {
+-    return options[property]
+-  }
+-  return dflt
+-}
++module.exports = wrapper;
+ 
+-function cdt2d(points, edges, options) {
++var INSERT_SORT_CUTOFF = 32
+ 
+-  if(!Array.isArray(edges)) {
+-    options = edges || {}
+-    edges = []
++function wrapper(data, n0) {
++  if (n0 <= 4*INSERT_SORT_CUTOFF) {
++    insertionSort(0, n0 - 1, data);
+   } else {
+-    options = options || {}
+-    edges = edges || []
++    quickSort(0, n0 - 1, data);
+   }
++}
+ 
+-  //Parse out options
+-  var delaunay = !!getDefault(options, 'delaunay', true)
+-  var interior = !!getDefault(options, 'interior', true)
+-  var exterior = !!getDefault(options, 'exterior', true)
+-  var infinity = !!getDefault(options, 'infinity', false)
+-
+-  //Handle trivial case
+-  if((!interior && !exterior) || points.length === 0) {
+-    return []
++function insertionSort(left, right, data) {
++  var ptr = 2*(left+1)
++  for(var i=left+1; i<=right; ++i) {
++    var a = data[ptr++]
++    var b = data[ptr++]
++    var j = i
++    var jptr = ptr-2
++    while(j-- > left) {
++      var x = data[jptr-2]
++      var y = data[jptr-1]
++      if(x < a) {
++        break
++      } else if(x === a && y < b) {
++        break
++      }
++      data[jptr]   = x
++      data[jptr+1] = y
++      jptr -= 2
++    }
++    data[jptr]   = a
++    data[jptr+1] = b
+   }
++}
+ 
+-  //Construct initial triangulation
+-  var cells = monotoneTriangulate(points, edges)
++function swap(i, j, data) {
++  i *= 2
++  j *= 2
++  var x = data[i]
++  var y = data[i+1]
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++  data[j] = x
++  data[j+1] = y
++}
+ 
+-  //If delaunay refinement needed, then improve quality by edge flipping
+-  if(delaunay || interior !== exterior || infinity) {
++function move(i, j, data) {
++  i *= 2
++  j *= 2
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++}
+ 
+-    //Index all of the cells to support fast neighborhood queries
+-    var triangulation = makeIndex(points.length, canonicalizeEdges(edges))
+-    for(var i=0; i<cells.length; ++i) {
+-      var f = cells[i]
+-      triangulation.addTriangle(f[0], f[1], f[2])
+-    }
++function rotate(i, j, k, data) {
++  i *= 2
++  j *= 2
++  k *= 2
++  var x = data[i]
++  var y = data[i+1]
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++  data[j] = data[k]
++  data[j+1] = data[k+1]
++  data[k] = x
++  data[k+1] = y
++}
+ 
+-    //Run edge flipping
+-    if(delaunay) {
+-      delaunayFlip(points, triangulation)
+-    }
++function shufflePivot(i, j, px, py, data) {
++  i *= 2
++  j *= 2
++  data[i] = data[j]
++  data[j] = px
++  data[i+1] = data[j+1]
++  data[j+1] = py
++}
+ 
+-    //Filter points
+-    if(!exterior) {
+-      return filterTriangulation(triangulation, -1)
+-    } else if(!interior) {
+-      return filterTriangulation(triangulation,  1, infinity)
+-    } else if(infinity) {
+-      return filterTriangulation(triangulation, 0, infinity)
+-    } else {
+-      return triangulation.cells()
+-    }
+-    
+-  } else {
+-    return cells
++function compare(i, j, data) {
++  i *= 2
++  j *= 2
++  var x = data[i],
++      y = data[j]
++  if(x < y) {
++    return false
++  } else if(x === y) {
++    return data[i+1] > data[j+1]
+   }
++  return true
+ }
+ 
+-},{"./lib/delaunay":46,"./lib/filter":47,"./lib/monotone":48,"./lib/triangulation":49}],46:[function(require,module,exports){
+-'use strict'
+-
+-var inCircle = require('robust-in-sphere')[4]
+-var bsearch = require('binary-search-bounds')
+-
+-module.exports = delaunayRefine
+-
+-function testFlip(points, triangulation, stack, a, b, x) {
+-  var y = triangulation.opposite(a, b)
+-
+-  //Test boundary edge
+-  if(y < 0) {
+-    return
++function comparePivot(i, y, b, data) {
++  i *= 2
++  var x = data[i]
++  if(x < y) {
++    return true
++  } else if(x === y) {
++    return data[i+1] < b
+   }
++  return false
++}
+ 
+-  //Swap edge if order flipped
+-  if(b < a) {
+-    var tmp = a
+-    a = b
+-    b = tmp
+-    tmp = x
+-    x = y
+-    y = tmp
++function quickSort(left, right, data) {
++  var sixth = (right - left + 1) / 6 | 0, 
++      index1 = left + sixth, 
++      index5 = right - sixth, 
++      index3 = left + right >> 1, 
++      index2 = index3 - sixth, 
++      index4 = index3 + sixth, 
++      el1 = index1, 
++      el2 = index2, 
++      el3 = index3, 
++      el4 = index4, 
++      el5 = index5, 
++      less = left + 1, 
++      great = right - 1, 
++      tmp = 0
++  if(compare(el1, el2, data)) {
++    tmp = el1
++    el1 = el2
++    el2 = tmp
+   }
+-
+-  //Test if edge is constrained
+-  if(triangulation.isConstraint(a, b)) {
+-    return
++  if(compare(el4, el5, data)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
+   }
+-
+-  //Test if edge is delaunay
+-  if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
+-    stack.push(a, b)
++  if(compare(el1, el3, data)) {
++    tmp = el1
++    el1 = el3
++    el3 = tmp
++  }
++  if(compare(el2, el3, data)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el1, el4, data)) {
++    tmp = el1
++    el1 = el4
++    el4 = tmp
++  }
++  if(compare(el3, el4, data)) {
++    tmp = el3
++    el3 = el4
++    el4 = tmp
++  }
++  if(compare(el2, el5, data)) {
++    tmp = el2
++    el2 = el5
++    el5 = tmp
++  }
++  if(compare(el2, el3, data)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el4, el5, data)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
+   }
+-}
+-
+-//Assume edges are sorted lexicographically
+-function delaunayRefine(points, triangulation) {
+-  var stack = []
+ 
+-  var numPoints = points.length
+-  var stars = triangulation.stars
+-  for(var a=0; a<numPoints; ++a) {
+-    var star = stars[a]
+-    for(var j=1; j<star.length; j+=2) {
+-      var b = star[j]
++  var pivot1X = data[2*el2]
++  var pivot1Y = data[2*el2+1]
++  var pivot2X = data[2*el4]
++  var pivot2Y = data[2*el4+1]
+ 
+-      //If order is not consistent, then skip edge
+-      if(b < a) {
+-        continue
+-      }
++  var ptr0 = 2 * el1;
++  var ptr2 = 2 * el3;
++  var ptr4 = 2 * el5;
++  var ptr5 = 2 * index1;
++  var ptr6 = 2 * index3;
++  var ptr7 = 2 * index5;
++  for (var i1 = 0; i1 < 2; ++i1) {
++    var x = data[ptr0+i1];
++    var y = data[ptr2+i1];
++    var z = data[ptr4+i1];
++    data[ptr5+i1] = x;
++    data[ptr6+i1] = y;
++    data[ptr7+i1] = z;
++  }
+ 
+-      //Check if edge is constrained
+-      if(triangulation.isConstraint(a, b)) {
+-        continue
++  move(index2, left, data)
++  move(index4, right, data)
++  for (var k = less; k <= great; ++k) {
++    if (comparePivot(k, pivot1X, pivot1Y, data)) {
++      if (k !== less) {
++        swap(k, less, data)
+       }
+-
+-      //Find opposite edge
+-      var x = star[j-1], y = -1
+-      for(var k=1; k<star.length; k+=2) {
+-        if(star[k-1] === b) {
+-          y = star[k]
+-          break
++      ++less;
++    } else {
++      if (!comparePivot(k, pivot2X, pivot2Y, data)) {
++        while (true) {
++          if (!comparePivot(great, pivot2X, pivot2Y, data)) {
++            if (--great < k) {
++              break;
++            }
++            continue;
++          } else {
++            if (comparePivot(great, pivot1X, pivot1Y, data)) {
++              rotate(k, less, great, data)
++              ++less;
++              --great;
++            } else {
++              swap(k, great, data)
++              --great;
++            }
++            break;
++          }
+         }
+       }
+-
+-      //If this is a boundary edge, don't flip it
+-      if(y < 0) {
+-        continue
+-      }
+-
+-      //If edge is in circle, flip it
+-      if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
+-        stack.push(a, b)
+-      }
+     }
+   }
+-
+-  while(stack.length > 0) {
+-    var b = stack.pop()
+-    var a = stack.pop()
+-
+-    //Find opposite pairs
+-    var x = -1, y = -1
+-    var star = stars[a]
+-    for(var i=1; i<star.length; i+=2) {
+-      var s = star[i-1]
+-      var t = star[i]
+-      if(s === b) {
+-        y = t
+-      } else if(t === b) {
+-        x = s
+-      }
+-    }
+-
+-    //If x/y are both valid then skip edge
+-    if(x < 0 || y < 0) {
+-      continue
+-    }
+-
+-    //If edge is now delaunay, then don't flip it
+-    if(inCircle(points[a], points[b], points[x], points[y]) >= 0) {
+-      continue
+-    }
+-
+-    //Flip the edge
+-    triangulation.flip(a, b)
+-
+-    //Test flipping neighboring edges
+-    testFlip(points, triangulation, stack, x, a, y)
+-    testFlip(points, triangulation, stack, a, y, x)
+-    testFlip(points, triangulation, stack, y, b, x)
+-    testFlip(points, triangulation, stack, b, x, y)
++  shufflePivot(left, less-1, pivot1X, pivot1Y, data)
++  shufflePivot(right, great+1, pivot2X, pivot2Y, data)
++  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
++    insertionSort(left, less - 2, data);
++  } else {
++    quickSort(left, less - 2, data);
++  }
++  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
++    insertionSort(great + 2, right, data);
++  } else {
++    quickSort(great + 2, right, data);
++  }
++  if (great - less <= INSERT_SORT_CUTOFF) {
++    insertionSort(less, great, data);
++  } else {
++    quickSort(less, great, data);
+   }
+ }
+-
+-},{"binary-search-bounds":50,"robust-in-sphere":51}],47:[function(require,module,exports){
++},{}],44:[function(require,module,exports){
+ 'use strict'
+ 
+-var bsearch = require('binary-search-bounds')
+-
+-module.exports = classifyFaces
+-
+-function FaceIndex(cells, neighbor, constraint, flags, active, next, boundary) {
+-  this.cells       = cells
+-  this.neighbor    = neighbor
+-  this.flags       = flags
+-  this.constraint  = constraint
+-  this.active      = active
+-  this.next        = next
+-  this.boundary    = boundary
++module.exports = {
++  init:           sqInit,
++  sweepBipartite: sweepBipartite,
++  sweepComplete:  sweepComplete,
++  scanBipartite:  scanBipartite,
++  scanComplete:   scanComplete
+ }
+ 
+-var proto = FaceIndex.prototype
++var pool  = require('typedarray-pool')
++var bits  = require('bit-twiddle')
++var isort = require('./sort')
+ 
+-function compareCell(a, b) {
+-  return a[0] - b[0] ||
+-         a[1] - b[1] ||
+-         a[2] - b[2]
+-}
++//Flag for blue
++var BLUE_FLAG = (1<<28)
+ 
+-proto.locate = (function() {
+-  var key = [0,0,0]
+-  return function(a, b, c) {
+-    var x = a, y = b, z = c
+-    if(b < c) {
+-      if(b < a) {
+-        x = b
+-        y = c
+-        z = a
+-      }
+-    } else if(c < a) {
+-      x = c
+-      y = a
+-      z = b
+-    }
+-    if(x < 0) {
+-      return -1
+-    }
+-    key[0] = x
+-    key[1] = y
+-    key[2] = z
+-    return bsearch.eq(this.cells, key, compareCell)
+-  }
+-})()
++//1D sweep event queue stuff (use pool to save space)
++var INIT_CAPACITY      = 1024
++var RED_SWEEP_QUEUE    = pool.mallocInt32(INIT_CAPACITY)
++var RED_SWEEP_INDEX    = pool.mallocInt32(INIT_CAPACITY)
++var BLUE_SWEEP_QUEUE   = pool.mallocInt32(INIT_CAPACITY)
++var BLUE_SWEEP_INDEX   = pool.mallocInt32(INIT_CAPACITY)
++var COMMON_SWEEP_QUEUE = pool.mallocInt32(INIT_CAPACITY)
++var COMMON_SWEEP_INDEX = pool.mallocInt32(INIT_CAPACITY)
++var SWEEP_EVENTS       = pool.mallocDouble(INIT_CAPACITY * 8)
+ 
+-function indexCells(triangulation, infinity) {
+-  //First get cells and canonicalize
+-  var cells = triangulation.cells()
+-  var nc = cells.length
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    var x = c[0], y = c[1], z = c[2]
+-    if(y < z) {
+-      if(y < x) {
+-        c[0] = y
+-        c[1] = z
+-        c[2] = x
+-      }
+-    } else if(z < x) {
+-      c[0] = z
+-      c[1] = x
+-      c[2] = y
+-    }
++//Reserves memory for the 1D sweep data structures
++function sqInit(count) {
++  var rcount = bits.nextPow2(count)
++  if(RED_SWEEP_QUEUE.length < rcount) {
++    pool.free(RED_SWEEP_QUEUE)
++    RED_SWEEP_QUEUE = pool.mallocInt32(rcount)
+   }
+-  cells.sort(compareCell)
+-
+-  //Initialize flag array
+-  var flags = new Array(nc)
+-  for(var i=0; i<flags.length; ++i) {
+-    flags[i] = 0
++  if(RED_SWEEP_INDEX.length < rcount) {
++    pool.free(RED_SWEEP_INDEX)
++    RED_SWEEP_INDEX = pool.mallocInt32(rcount)
+   }
+-
+-  //Build neighbor index, initialize queues
+-  var active = []
+-  var next   = []
+-  var neighbor = new Array(3*nc)
+-  var constraint = new Array(3*nc)
+-  var boundary = null
+-  if(infinity) {
+-    boundary = []
++  if(BLUE_SWEEP_QUEUE.length < rcount) {
++    pool.free(BLUE_SWEEP_QUEUE)
++    BLUE_SWEEP_QUEUE = pool.mallocInt32(rcount)
+   }
+-  var index = new FaceIndex(
+-    cells,
+-    neighbor,
+-    constraint,
+-    flags,
+-    active,
+-    next,
+-    boundary)
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<3; ++j) {
+-      var x = c[j], y = c[(j+1)%3]
+-      var a = neighbor[3*i+j] = index.locate(y, x, triangulation.opposite(y, x))
+-      var b = constraint[3*i+j] = triangulation.isConstraint(x, y)
+-      if(a < 0) {
+-        if(b) {
+-          next.push(i)
+-        } else {
+-          active.push(i)
+-          flags[i] = 1
+-        }
+-        if(infinity) {
+-          boundary.push([y, x, -1])
+-        }
+-      }
+-    }
++  if(BLUE_SWEEP_INDEX.length < rcount) {
++    pool.free(BLUE_SWEEP_INDEX)
++    BLUE_SWEEP_INDEX = pool.mallocInt32(rcount)
++  }
++  if(COMMON_SWEEP_QUEUE.length < rcount) {
++    pool.free(COMMON_SWEEP_QUEUE)
++    COMMON_SWEEP_QUEUE = pool.mallocInt32(rcount)
++  }
++  if(COMMON_SWEEP_INDEX.length < rcount) {
++    pool.free(COMMON_SWEEP_INDEX)
++    COMMON_SWEEP_INDEX = pool.mallocInt32(rcount)
++  }
++  var eventLength = 8 * rcount
++  if(SWEEP_EVENTS.length < eventLength) {
++    pool.free(SWEEP_EVENTS)
++    SWEEP_EVENTS = pool.mallocDouble(eventLength)
+   }
+-  return index
+ }
+ 
+-function filterCells(cells, flags, target) {
+-  var ptr = 0
+-  for(var i=0; i<cells.length; ++i) {
+-    if(flags[i] === target) {
+-      cells[ptr++] = cells[i]
+-    }
+-  }
+-  cells.length = ptr
+-  return cells
++//Remove an item from the active queue in O(1)
++function sqPop(queue, index, count, item) {
++  var idx = index[item]
++  var top = queue[count-1]
++  queue[idx] = top
++  index[top] = idx
+ }
+ 
+-function classifyFaces(triangulation, target, infinity) {
+-  var index = indexCells(triangulation, infinity)
++//Insert an item into the active queue in O(1)
++function sqPush(queue, index, count, item) {
++  queue[count] = item
++  index[item]  = count
++}
+ 
+-  if(target === 0) {
+-    if(infinity) {
+-      return index.cells.concat(index.boundary)
+-    } else {
+-      return index.cells
+-    }
++//Recursion base case: use 1D sweep algorithm
++function sweepBipartite(
++    d, visit,
++    redStart,  redEnd, red, redIndex,
++    blueStart, blueEnd, blue, blueIndex) {
++
++  //store events as pairs [coordinate, idx]
++  //
++  //  red create:  -(idx+1)
++  //  red destroy: idx
++  //  blue create: -(idx+BLUE_FLAG)
++  //  blue destroy: idx+BLUE_FLAG
++  //
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = d-1
++  var iend     = elemSize-1
++
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = redIndex[i]
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -(idx+1)
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
+   }
+ 
+-  var side = 1
+-  var active = index.active
+-  var next = index.next
+-  var flags = index.flags
+-  var cells = index.cells
+-  var constraint = index.constraint
+-  var neighbor = index.neighbor
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = blueIndex[i]+BLUE_FLAG
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
++  }
+ 
+-  while(active.length > 0 || next.length > 0) {
+-    while(active.length > 0) {
+-      var t = active.pop()
+-      if(flags[t] === -side) {
+-        continue
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive  = 0
++  var blueActive = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e >= BLUE_FLAG) {
++      //blue destroy event
++      e = (e-BLUE_FLAG)|0
++      sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, e)
++    } else if(e >= 0) {
++      //red destroy event
++      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e)
++    } else if(e <= -BLUE_FLAG) {
++      //blue create event
++      e = (-e-BLUE_FLAG)|0
++      for(var j=0; j<redActive; ++j) {
++        var retval = visit(RED_SWEEP_QUEUE[j], e)
++        if(retval !== void 0) {
++          return retval
++        }
+       }
+-      flags[t] = side
+-      var c = cells[t]
+-      for(var j=0; j<3; ++j) {
+-        var f = neighbor[3*t+j]
+-        if(f >= 0 && flags[f] === 0) {
+-          if(constraint[3*t+j]) {
+-            next.push(f)
+-          } else {
+-            active.push(f)
+-            flags[f] = side
+-          }
++      sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, e)
++    } else {
++      //red create event
++      e = (-e-1)|0
++      for(var j=0; j<blueActive; ++j) {
++        var retval = visit(e, BLUE_SWEEP_QUEUE[j])
++        if(retval !== void 0) {
++          return retval
+         }
+       }
++      sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, e)
+     }
+-
+-    //Swap arrays and loop
+-    var tmp = next
+-    next = active
+-    active = tmp
+-    next.length = 0
+-    side = -side
+-  }
+-
+-  var result = filterCells(cells, flags, target)
+-  if(infinity) {
+-    return result.concat(index.boundary)
+   }
+-  return result
+ }
+ 
+-},{"binary-search-bounds":50}],48:[function(require,module,exports){
+-'use strict'
++//Complete sweep
++function sweepComplete(d, visit, 
++  redStart, redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
+ 
+-var bsearch = require('binary-search-bounds')
+-var orient = require('robust-orientation')[3]
+-
+-var EVENT_POINT = 0
+-var EVENT_END   = 1
+-var EVENT_START = 2
+-
+-module.exports = monotoneTriangulate
+-
+-//A partial convex hull fragment, made of two unimonotone polygons
+-function PartialHull(a, b, idx, lowerIds, upperIds) {
+-  this.a = a
+-  this.b = b
+-  this.idx = idx
+-  this.lowerIds = lowerIds
+-  this.upperIds = upperIds
+-}
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = d-1
++  var iend     = elemSize-1
+ 
+-//An event in the sweep line procedure
+-function Event(a, b, type, idx) {
+-  this.a    = a
+-  this.b    = b
+-  this.type = type
+-  this.idx  = idx
+-}
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = (redIndex[i]+1)<<1
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
++  }
+ 
+-//This is used to compare events for the sweep line procedure
+-// Points are:
+-//  1. sorted lexicographically
+-//  2. sorted by type  (point < end < start)
+-//  3. segments sorted by winding order
+-//  4. sorted by index
+-function compareEvent(a, b) {
+-  var d =
+-    (a.a[0] - b.a[0]) ||
+-    (a.a[1] - b.a[1]) ||
+-    (a.type - b.type)
+-  if(d) { return d }
+-  if(a.type !== EVENT_POINT) {
+-    d = orient(a.a, a.b, b.b)
+-    if(d) { return d }
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = (blueIndex[i]+1)<<1
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = (-idx)|1
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx|1
+   }
+-  return a.idx - b.idx
+-}
+ 
+-function testPoint(hull, p) {
+-  return orient(hull.a, hull.b, p)
+-}
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  var blueActive   = 0
++  var commonActive = 0
++  for(var i=0; i<n; ++i) {
++    var e     = SWEEP_EVENTS[2*i+1]|0
++    var color = e&1
++    if(i < n-1 && (e>>1) === (SWEEP_EVENTS[2*i+3]>>1)) {
++      color = 2
++      i += 1
++    }
++    
++    if(e < 0) {
++      //Create event
++      var id = -(e>>1) - 1
+ 
+-function addPoint(cells, hulls, points, p, idx) {
+-  var lo = bsearch.lt(hulls, p, testPoint)
+-  var hi = bsearch.gt(hulls, p, testPoint)
+-  for(var i=lo; i<hi; ++i) {
+-    var hull = hulls[i]
++      //Intersect with common
++      for(var j=0; j<commonActive; ++j) {
++        var retval = visit(COMMON_SWEEP_QUEUE[j], id)
++        if(retval !== void 0) {
++          return retval
++        }
++      }
+ 
+-    //Insert p into lower hull
+-    var lowerIds = hull.lowerIds
+-    var m = lowerIds.length
+-    while(m > 1 && orient(
+-        points[lowerIds[m-2]],
+-        points[lowerIds[m-1]],
+-        p) > 0) {
+-      cells.push(
+-        [lowerIds[m-1],
+-         lowerIds[m-2],
+-         idx])
+-      m -= 1
+-    }
+-    lowerIds.length = m
+-    lowerIds.push(idx)
++      if(color !== 0) {
++        //Intersect with red
++        for(var j=0; j<redActive; ++j) {
++          var retval = visit(RED_SWEEP_QUEUE[j], id)
++          if(retval !== void 0) {
++            return retval
++          }
++        }
++      }
+ 
+-    //Insert p into upper hull
+-    var upperIds = hull.upperIds
+-    var m = upperIds.length
+-    while(m > 1 && orient(
+-        points[upperIds[m-2]],
+-        points[upperIds[m-1]],
+-        p) < 0) {
+-      cells.push(
+-        [upperIds[m-2],
+-         upperIds[m-1],
+-         idx])
+-      m -= 1
++      if(color !== 1) {
++        //Intersect with blue
++        for(var j=0; j<blueActive; ++j) {
++          var retval = visit(BLUE_SWEEP_QUEUE[j], id)
++          if(retval !== void 0) {
++            return retval
++          }
++        }
++      }
++
++      if(color === 0) {
++        //Red
++        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, id)
++      } else if(color === 1) {
++        //Blue
++        sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, id)
++      } else if(color === 2) {
++        //Both
++        sqPush(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive++, id)
++      }
++    } else {
++      //Destroy event
++      var id = (e>>1) - 1
++      if(color === 0) {
++        //Red
++        sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, id)
++      } else if(color === 1) {
++        //Blue
++        sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, id)
++      } else if(color === 2) {
++        //Both
++        sqPop(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive--, id)
++      }
+     }
+-    upperIds.length = m
+-    upperIds.push(idx)
+   }
+ }
+ 
+-function findSplit(hull, edge) {
+-  var d
+-  if(hull.a[0] < edge.a[0]) {
+-    d = orient(hull.a, hull.b, edge.a)
++//Sweep and prune/scanline algorithm:
++//  Scan along axis, detect intersections
++//  Brute force all boxes along axis
++function scanBipartite(
++  d, axis, visit, flip,
++  redStart,  redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
++  
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = axis
++  var iend     = axis+d
++
++  var redShift  = 1
++  var blueShift = 1
++  if(flip) {
++    blueShift = BLUE_FLAG
+   } else {
+-    d = orient(edge.b, edge.a, hull.a)
++    redShift  = BLUE_FLAG
+   }
+-  if(d) { return d }
+-  if(edge.b[0] < hull.b[0]) {
+-    d = orient(hull.a, hull.b, edge.b)
+-  } else {
+-    d = orient(edge.b, edge.a, hull.b)
++
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = i + redShift
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
++  }
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = i + blueShift
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
+   }
+-  return d || hull.idx - edge.idx
+-}
+ 
+-function splitHulls(hulls, points, event) {
+-  var splitIdx = bsearch.le(hulls, event, findSplit)
+-  var hull = hulls[splitIdx]
+-  var upperIds = hull.upperIds
+-  var x = upperIds[upperIds.length-1]
+-  hull.upperIds = [x]
+-  hulls.splice(splitIdx+1, 0,
+-    new PartialHull(event.a, event.b, event.idx, [x], upperIds))
+-}
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e < 0) {
++      var idx   = -e
++      var isRed = false
++      if(idx >= BLUE_FLAG) {
++        isRed = !flip
++        idx -= BLUE_FLAG 
++      } else {
++        isRed = !!flip
++        idx -= 1
++      }
++      if(isRed) {
++        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, idx)
++      } else {
++        var blueId  = blueIndex[idx]
++        var bluePtr = elemSize * idx
++        
++        var b0 = blue[bluePtr+axis+1]
++        var b1 = blue[bluePtr+axis+1+d]
+ 
++red_loop:
++        for(var j=0; j<redActive; ++j) {
++          var oidx   = RED_SWEEP_QUEUE[j]
++          var redPtr = elemSize * oidx
+ 
+-function mergeHulls(hulls, points, event) {
+-  //Swap pointers for merge search
+-  var tmp = event.a
+-  event.a = event.b
+-  event.b = tmp
+-  var mergeIdx = bsearch.eq(hulls, event, findSplit)
+-  var upper = hulls[mergeIdx]
+-  var lower = hulls[mergeIdx-1]
+-  lower.upperIds = upper.upperIds
+-  hulls.splice(mergeIdx, 1)
+-}
++          if(b1 < red[redPtr+axis+1] || 
++             red[redPtr+axis+1+d] < b0) {
++            continue
++          }
+ 
++          for(var k=axis+2; k<d; ++k) {
++            if(blue[bluePtr + k + d] < red[redPtr + k] || 
++               red[redPtr + k + d] < blue[bluePtr + k]) {
++              continue red_loop
++            }
++          }
+ 
+-function monotoneTriangulate(points, edges) {
++          var redId  = redIndex[oidx]
++          var retval
++          if(flip) {
++            retval = visit(blueId, redId)
++          } else {
++            retval = visit(redId, blueId)
++          }
++          if(retval !== void 0) {
++            return retval 
++          }
++        }
++      }
++    } else {
++      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e - redShift)
++    }
++  }
++}
+ 
+-  var numPoints = points.length
+-  var numEdges = edges.length
++function scanComplete(
++  d, axis, visit,
++  redStart,  redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
+ 
+-  var events = []
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = axis
++  var iend     = axis+d
+ 
+-  //Create point events
+-  for(var i=0; i<numPoints; ++i) {
+-    events.push(new Event(
+-      points[i],
+-      null,
+-      EVENT_POINT,
+-      i))
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = i + BLUE_FLAG
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
+   }
+-
+-  //Create edge events
+-  for(var i=0; i<numEdges; ++i) {
+-    var e = edges[i]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    if(a[0] < b[0]) {
+-      events.push(
+-        new Event(a, b, EVENT_START, i),
+-        new Event(b, a, EVENT_END, i))
+-    } else if(a[0] > b[0]) {
+-      events.push(
+-        new Event(b, a, EVENT_START, i),
+-        new Event(a, b, EVENT_END, i))
+-    }
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = i + 1
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
+   }
+ 
+-  //Sort events
+-  events.sort(compareEvent)
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e < 0) {
++      var idx   = -e
++      if(idx >= BLUE_FLAG) {
++        RED_SWEEP_QUEUE[redActive++] = idx - BLUE_FLAG
++      } else {
++        idx -= 1
++        var blueId  = blueIndex[idx]
++        var bluePtr = elemSize * idx
+ 
+-  //Initialize hull
+-  var minX = events[0].a[0] - (1 + Math.abs(events[0].a[0])) * Math.pow(2, -52)
+-  var hull = [ new PartialHull([minX, 1], [minX, 0], -1, [], [], [], []) ]
++        var b0 = blue[bluePtr+axis+1]
++        var b1 = blue[bluePtr+axis+1+d]
+ 
+-  //Process events in order
+-  var cells = []
+-  for(var i=0, numEvents=events.length; i<numEvents; ++i) {
+-    var event = events[i]
+-    var type = event.type
+-    if(type === EVENT_POINT) {
+-      addPoint(cells, hull, points, event.a, event.idx)
+-    } else if(type === EVENT_START) {
+-      splitHulls(hull, points, event)
++red_loop:
++        for(var j=0; j<redActive; ++j) {
++          var oidx   = RED_SWEEP_QUEUE[j]
++          var redId  = redIndex[oidx]
++
++          if(redId === blueId) {
++            break
++          }
++
++          var redPtr = elemSize * oidx
++          if(b1 < red[redPtr+axis+1] || 
++            red[redPtr+axis+1+d] < b0) {
++            continue
++          }
++          for(var k=axis+2; k<d; ++k) {
++            if(blue[bluePtr + k + d] < red[redPtr + k] || 
++               red[redPtr + k + d]   < blue[bluePtr + k]) {
++              continue red_loop
++            }
++          }
++
++          var retval = visit(redId, blueId)
++          if(retval !== void 0) {
++            return retval 
++          }
++        }
++      }
+     } else {
+-      mergeHulls(hull, points, event)
++      var idx = e - BLUE_FLAG
++      for(var j=redActive-1; j>=0; --j) {
++        if(RED_SWEEP_QUEUE[j] === idx) {
++          for(var k=j+1; k<redActive; ++k) {
++            RED_SWEEP_QUEUE[k-1] = RED_SWEEP_QUEUE[k]
++          }
++          break
++        }
++      }
++      --redActive
+     }
+   }
+-
+-  //Return triangulation
+-  return cells
+ }
++},{"./sort":43,"bit-twiddle":35,"typedarray-pool":246}],45:[function(require,module,exports){
++(function (global){
++/*!
++ * The buffer module from node.js, for the browser.
++ *
++ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
++ * @license  MIT
++ */
++/* eslint-disable no-proto */
+ 
+-},{"binary-search-bounds":50,"robust-orientation":225}],49:[function(require,module,exports){
+ 'use strict'
+ 
+-var bsearch = require('binary-search-bounds')
++var base64 = require('base64-js')
++var ieee754 = require('ieee754')
++var isArray = require('isarray')
+ 
+-module.exports = createTriangulation
++exports.Buffer = Buffer
++exports.SlowBuffer = SlowBuffer
++exports.INSPECT_MAX_BYTES = 50
+ 
+-function Triangulation(stars, edges) {
+-  this.stars = stars
+-  this.edges = edges
+-}
++/**
++ * If `Buffer.TYPED_ARRAY_SUPPORT`:
++ *   === true    Use Uint8Array implementation (fastest)
++ *   === false   Use Object implementation (most compatible, even IE6)
++ *
++ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
++ * Opera 11.6+, iOS 4.2+.
++ *
++ * Due to various browser bugs, sometimes the Object implementation will be used even
++ * when the browser supports typed arrays.
++ *
++ * Note:
++ *
++ *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
++ *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
++ *
++ *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
++ *
++ *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
++ *     incorrect length in some situations.
+ 
+-var proto = Triangulation.prototype
++ * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
++ * get the Object implementation, which is slower but behaves correctly.
++ */
++Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
++  ? global.TYPED_ARRAY_SUPPORT
++  : typedArraySupport()
+ 
+-function removePair(list, j, k) {
+-  for(var i=1, n=list.length; i<n; i+=2) {
+-    if(list[i-1] === j && list[i] === k) {
+-      list[i-1] = list[n-2]
+-      list[i] = list[n-1]
+-      list.length = n - 2
+-      return
+-    }
+-  }
+-}
++/*
++ * Export kMaxLength after typed array support is determined.
++ */
++exports.kMaxLength = kMaxLength()
+ 
+-proto.isConstraint = (function() {
+-  var e = [0,0]
+-  function compareLex(a, b) {
+-    return a[0] - b[0] || a[1] - b[1]
+-  }
+-  return function(i, j) {
+-    e[0] = Math.min(i,j)
+-    e[1] = Math.max(i,j)
+-    return bsearch.eq(this.edges, e, compareLex) >= 0
++function typedArraySupport () {
++  try {
++    var arr = new Uint8Array(1)
++    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
++    return arr.foo() === 42 && // typed array instances can be augmented
++        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
++        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
++  } catch (e) {
++    return false
+   }
+-})()
+-
+-proto.removeTriangle = function(i, j, k) {
+-  var stars = this.stars
+-  removePair(stars[i], j, k)
+-  removePair(stars[j], k, i)
+-  removePair(stars[k], i, j)
+ }
+ 
+-proto.addTriangle = function(i, j, k) {
+-  var stars = this.stars
+-  stars[i].push(j, k)
+-  stars[j].push(k, i)
+-  stars[k].push(i, j)
++function kMaxLength () {
++  return Buffer.TYPED_ARRAY_SUPPORT
++    ? 0x7fffffff
++    : 0x3fffffff
+ }
+ 
+-proto.opposite = function(j, i) {
+-  var list = this.stars[i]
+-  for(var k=1, n=list.length; k<n; k+=2) {
+-    if(list[k] === j) {
+-      return list[k-1]
++function createBuffer (that, length) {
++  if (kMaxLength() < length) {
++    throw new RangeError('Invalid typed array length')
++  }
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    // Return an augmented `Uint8Array` instance, for best performance
++    that = new Uint8Array(length)
++    that.__proto__ = Buffer.prototype
++  } else {
++    // Fallback: Return an object instance of the Buffer class
++    if (that === null) {
++      that = new Buffer(length)
+     }
++    that.length = length
+   }
+-  return -1
++
++  return that
+ }
+ 
+-proto.flip = function(i, j) {
+-  var a = this.opposite(i, j)
+-  var b = this.opposite(j, i)
+-  this.removeTriangle(i, j, a)
+-  this.removeTriangle(j, i, b)
+-  this.addTriangle(i, b, a)
+-  this.addTriangle(j, a, b)
+-}
++/**
++ * The Buffer constructor returns instances of `Uint8Array` that have their
++ * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
++ * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
++ * and the `Uint8Array` methods. Square bracket notation works as expected -- it
++ * returns a single octet.
++ *
++ * The `Uint8Array` prototype remains unmodified.
++ */
+ 
+-proto.edges = function() {
+-  var stars = this.stars
+-  var result = []
+-  for(var i=0, n=stars.length; i<n; ++i) {
+-    var list = stars[i]
+-    for(var j=0, m=list.length; j<m; j+=2) {
+-      result.push([list[j], list[j+1]])
+-    }
++function Buffer (arg, encodingOrOffset, length) {
++  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
++    return new Buffer(arg, encodingOrOffset, length)
+   }
+-  return result
+-}
+ 
+-proto.cells = function() {
+-  var stars = this.stars
+-  var result = []
+-  for(var i=0, n=stars.length; i<n; ++i) {
+-    var list = stars[i]
+-    for(var j=0, m=list.length; j<m; j+=2) {
+-      var s = list[j]
+-      var t = list[j+1]
+-      if(i < Math.min(s, t)) {
+-        result.push([i, s, t])
+-      }
++  // Common case.
++  if (typeof arg === 'number') {
++    if (typeof encodingOrOffset === 'string') {
++      throw new Error(
++        'If encoding is specified then the first argument must be a string'
++      )
+     }
++    return allocUnsafe(this, arg)
+   }
+-  return result
++  return from(this, arg, encodingOrOffset, length)
+ }
+ 
+-function createTriangulation(numVerts, edges) {
+-  var stars = new Array(numVerts)
+-  for(var i=0; i<numVerts; ++i) {
+-    stars[i] = []
+-  }
+-  return new Triangulation(stars, edges)
+-}
++Buffer.poolSize = 8192 // not used by this implementation
+ 
+-},{"binary-search-bounds":50}],50:[function(require,module,exports){
+-"use strict"
++// TODO: Legacy, not needed anymore. Remove in next major version.
++Buffer._augment = function (arr) {
++  arr.__proto__ = Buffer.prototype
++  return arr
++}
+ 
+-function compileSearch(funcName, predicate, reversed, extraArgs, earlyOut) {
+-  var code = [
+-    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
+-earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
+-";while(l<=h){\
+-var m=(l+h)>>>1,x=a[m]"]
+-  if(earlyOut) {
+-    if(predicate.indexOf("c") < 0) {
+-      code.push(";if(x===y){return m}else if(x<=y){")
+-    } else {
+-      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
+-    }
+-  } else {
+-    code.push(";if(", predicate, "){i=m;")
++function from (that, value, encodingOrOffset, length) {
++  if (typeof value === 'number') {
++    throw new TypeError('"value" argument must not be a number')
+   }
+-  if(reversed) {
+-    code.push("l=m+1}else{h=m-1}")
+-  } else {
+-    code.push("h=m-1}else{l=m+1}")
++
++  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
++    return fromArrayBuffer(that, value, encodingOrOffset, length)
+   }
+-  code.push("}")
+-  if(earlyOut) {
+-    code.push("return -1};")
+-  } else {
+-    code.push("return i};")
++
++  if (typeof value === 'string') {
++    return fromString(that, value, encodingOrOffset)
+   }
+-  return code.join("")
+-}
+ 
+-function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
+-  var result = new Function([
+-  compileSearch("A", "x" + predicate + "y", reversed, ["y"], earlyOut),
+-  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], earlyOut),
+-"function dispatchBsearch", suffix, "(a,y,c,l,h){\
+-if(typeof(c)==='function'){\
+-return P(a,(l===void 0)?0:l|0,(h===void 0)?a.length-1:h|0,y,c)\
+-}else{\
+-return A(a,(c===void 0)?0:c|0,(l===void 0)?a.length-1:l|0,y)\
+-}}\
+-return dispatchBsearch", suffix].join(""))
+-  return result()
++  return fromObject(that, value)
+ }
+ 
+-module.exports = {
+-  ge: compileBoundsSearch(">=", false, "GE"),
+-  gt: compileBoundsSearch(">", false, "GT"),
+-  lt: compileBoundsSearch("<", true, "LT"),
+-  le: compileBoundsSearch("<=", true, "LE"),
+-  eq: compileBoundsSearch("-", true, "EQ", true)
++/**
++ * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
++ * if value is a number.
++ * Buffer.from(str[, encoding])
++ * Buffer.from(array)
++ * Buffer.from(buffer)
++ * Buffer.from(arrayBuffer[, byteOffset[, length]])
++ **/
++Buffer.from = function (value, encodingOrOffset, length) {
++  return from(null, value, encodingOrOffset, length)
+ }
+ 
+-},{}],51:[function(require,module,exports){
+-"use strict"
+-
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
+-var robustDiff = require("robust-subtract")
+-var robustScale = require("robust-scale")
+-
+-var NUM_EXPAND = 6
+-
+-function cofactor(m, c) {
+-  var result = new Array(m.length-1)
+-  for(var i=1; i<m.length; ++i) {
+-    var r = result[i-1] = new Array(m.length-1)
+-    for(var j=0,k=0; j<m.length; ++j) {
+-      if(j === c) {
+-        continue
+-      }
+-      r[k++] = m[i][j]
+-    }
++if (Buffer.TYPED_ARRAY_SUPPORT) {
++  Buffer.prototype.__proto__ = Uint8Array.prototype
++  Buffer.__proto__ = Uint8Array
++  if (typeof Symbol !== 'undefined' && Symbol.species &&
++      Buffer[Symbol.species] === Buffer) {
++    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
++    Object.defineProperty(Buffer, Symbol.species, {
++      value: null,
++      configurable: true
++    })
+   }
+-  return result
+ }
+ 
+-function matrix(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = new Array(n)
+-    for(var j=0; j<n; ++j) {
+-      result[i][j] = ["m", j, "[", (n-i-2), "]"].join("")
+-    }
++function assertSize (size) {
++  if (typeof size !== 'number') {
++    throw new TypeError('"size" argument must be a number')
++  } else if (size < 0) {
++    throw new RangeError('"size" argument must not be negative')
+   }
+-  return result
+ }
+ 
+-function generateSum(expr) {
+-  if(expr.length === 1) {
+-    return expr[0]
+-  } else if(expr.length === 2) {
+-    return ["sum(", expr[0], ",", expr[1], ")"].join("")
+-  } else {
+-    var m = expr.length>>1
+-    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++function alloc (that, size, fill, encoding) {
++  assertSize(size)
++  if (size <= 0) {
++    return createBuffer(that, size)
+   }
+-}
+-
+-function makeProduct(a, b) {
+-  if(a.charAt(0) === "m") {
+-    if(b.charAt(0) === "w") {
+-      var toks = a.split("[")
+-      return ["w", b.substr(1), "m", toks[0].substr(1)].join("")
+-    } else {
+-      return ["prod(", a, ",", b, ")"].join("")
+-    }
+-  } else {
+-    return makeProduct(b, a)
++  if (fill !== undefined) {
++    // Only pay attention to encoding if it's a string. This
++    // prevents accidentally sending in a number that would
++    // be interpretted as a start offset.
++    return typeof encoding === 'string'
++      ? createBuffer(that, size).fill(fill, encoding)
++      : createBuffer(that, size).fill(fill)
+   }
++  return createBuffer(that, size)
+ }
+ 
+-function sign(s) {
+-  if(s & 1 !== 0) {
+-    return "-"
+-  }
+-  return ""
++/**
++ * Creates a new filled Buffer instance.
++ * alloc(size[, fill[, encoding]])
++ **/
++Buffer.alloc = function (size, fill, encoding) {
++  return alloc(null, size, fill, encoding)
+ }
+ 
+-function determinant(m) {
+-  if(m.length === 2) {
+-    return [["diff(", makeProduct(m[0][0], m[1][1]), ",", makeProduct(m[1][0], m[0][1]), ")"].join("")]
+-  } else {
+-    var expr = []
+-    for(var i=0; i<m.length; ++i) {
+-      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
++function allocUnsafe (that, size) {
++  assertSize(size)
++  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) {
++    for (var i = 0; i < size; ++i) {
++      that[i] = 0
+     }
+-    return expr
+   }
++  return that
+ }
+ 
+-function makeSquare(d, n) {
+-  var terms = []
+-  for(var i=0; i<n-2; ++i) {
+-    terms.push(["prod(m", d, "[", i, "],m", d, "[", i, "])"].join(""))
+-  }
+-  return generateSum(terms)
++/**
++ * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
++ * */
++Buffer.allocUnsafe = function (size) {
++  return allocUnsafe(null, size)
++}
++/**
++ * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
++ */
++Buffer.allocUnsafeSlow = function (size) {
++  return allocUnsafe(null, size)
+ }
+ 
+-function orientation(n) {
+-  var pos = []
+-  var neg = []
+-  var m = matrix(n)
+-  for(var i=0; i<n; ++i) {
+-    m[0][i] = "1"
+-    m[n-1][i] = "w"+i
+-  } 
+-  for(var i=0; i<n; ++i) {
+-    if((i&1)===0) {
+-      pos.push.apply(pos,determinant(cofactor(m, i)))
+-    } else {
+-      neg.push.apply(neg,determinant(cofactor(m, i)))
+-    }
+-  }
+-  var posExpr = generateSum(pos)
+-  var negExpr = generateSum(neg)
+-  var funcName = "exactInSphere" + n
+-  var funcArgs = []
+-  for(var i=0; i<n; ++i) {
+-    funcArgs.push("m" + i)
++function fromString (that, string, encoding) {
++  if (typeof encoding !== 'string' || encoding === '') {
++    encoding = 'utf8'
+   }
+-  var code = ["function ", funcName, "(", funcArgs.join(), "){"]
+-  for(var i=0; i<n; ++i) {
+-    code.push("var w",i,"=",makeSquare(i,n),";")
+-    for(var j=0; j<n; ++j) {
+-      if(j !== i) {
+-        code.push("var w",i,"m",j,"=scale(w",i,",m",j,"[0]);")
+-      }
+-    }
++
++  if (!Buffer.isEncoding(encoding)) {
++    throw new TypeError('"encoding" must be a valid string encoding')
+   }
+-  code.push("var p=", posExpr, ",n=", negExpr, ",d=diff(p,n);return d[d.length-1];}return ", funcName)
+-  var proc = new Function("sum", "diff", "prod", "scale", code.join(""))
+-  return proc(robustSum, robustDiff, twoProduct, robustScale)
+-}
+ 
+-function inSphere0() { return 0 }
+-function inSphere1() { return 0 }
+-function inSphere2() { return 0 }
++  var length = byteLength(string, encoding) | 0
++  that = createBuffer(that, length)
+ 
+-var CACHED = [
+-  inSphere0,
+-  inSphere1,
+-  inSphere2
+-]
++  var actual = that.write(string, encoding)
+ 
+-function slowInSphere(args) {
+-  var proc = CACHED[args.length]
+-  if(!proc) {
+-    proc = CACHED[args.length] = orientation(args.length)
++  if (actual !== length) {
++    // Writing a hex string, for example, that contains invalid characters will
++    // cause everything after the first invalid character to be ignored. (e.g.
++    // 'abxxcd' will be treated as 'ab')
++    that = that.slice(0, actual)
+   }
+-  return proc.apply(undefined, args)
++
++  return that
+ }
+ 
+-function generateInSphereTest() {
+-  while(CACHED.length <= NUM_EXPAND) {
+-    CACHED.push(orientation(CACHED.length))
++function fromArrayLike (that, array) {
++  var length = array.length < 0 ? 0 : checked(array.length) | 0
++  that = createBuffer(that, length)
++  for (var i = 0; i < length; i += 1) {
++    that[i] = array[i] & 255
+   }
+-  var args = []
+-  var procArgs = ["slow"]
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    args.push("a" + i)
+-    procArgs.push("o" + i)
++  return that
++}
++
++function fromArrayBuffer (that, array, byteOffset, length) {
++  array.byteLength // this throws if `array` is not a valid ArrayBuffer
++
++  if (byteOffset < 0 || array.byteLength < byteOffset) {
++    throw new RangeError('\'offset\' is out of bounds')
+   }
+-  var code = [
+-    "function testInSphere(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
+-  ]
+-  for(var i=2; i<=NUM_EXPAND; ++i) {
+-    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
++
++  if (array.byteLength < byteOffset + (length || 0)) {
++    throw new RangeError('\'length\' is out of bounds')
+   }
+-  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return testInSphere")
+-  procArgs.push(code.join(""))
+ 
+-  var proc = Function.apply(undefined, procArgs)
++  if (byteOffset === undefined && length === undefined) {
++    array = new Uint8Array(array)
++  } else if (length === undefined) {
++    array = new Uint8Array(array, byteOffset)
++  } else {
++    array = new Uint8Array(array, byteOffset, length)
++  }
+ 
+-  module.exports = proc.apply(undefined, [slowInSphere].concat(CACHED))
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    module.exports[i] = CACHED[i]
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    // Return an augmented `Uint8Array` instance, for best performance
++    that = array
++    that.__proto__ = Buffer.prototype
++  } else {
++    // Fallback: Return an object instance of the Buffer class
++    that = fromArrayLike(that, array)
+   }
++  return that
+ }
+ 
+-generateInSphereTest()
+-},{"robust-scale":226,"robust-subtract":227,"robust-sum":228,"two-product":240}],52:[function(require,module,exports){
+-'use strict'
++function fromObject (that, obj) {
++  if (Buffer.isBuffer(obj)) {
++    var len = checked(obj.length) | 0
++    that = createBuffer(that, len)
+ 
+-module.exports = cleanPSLG
++    if (that.length === 0) {
++      return that
++    }
+ 
+-var UnionFind = require('union-find')
+-var boxIntersect = require('box-intersect')
+-var compareCell = require('compare-cell')
+-var segseg = require('robust-segment-intersect')
+-var rat = require('big-rat')
+-var ratCmp = require('big-rat/cmp')
+-var ratToFloat = require('big-rat/to-float')
+-var ratVec = require('rat-vec')
+-var nextafter = require('nextafter')
++    obj.copy(that, 0, 0, len)
++    return that
++  }
+ 
+-var solveIntersection = require('./lib/rat-seg-intersect')
++  if (obj) {
++    if ((typeof ArrayBuffer !== 'undefined' &&
++        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
++      if (typeof obj.length !== 'number' || isnan(obj.length)) {
++        return createBuffer(that, 0)
++      }
++      return fromArrayLike(that, obj)
++    }
+ 
+-//Bounds on a rational number when rounded to a float
+-function boundRat(r) {
+-  var f = ratToFloat(r)
+-  var cmp = ratCmp(rat(f), r)
+-  if(cmp < 0) {
+-    return [f, nextafter(f, Infinity)]
+-  } else if(cmp > 0) {
+-    return [nextafter(f, -Infinity), f]
+-  } else {
+-    return [f, f]
++    if (obj.type === 'Buffer' && isArray(obj.data)) {
++      return fromArrayLike(that, obj.data)
++    }
+   }
+-}
+ 
+-//Convert a list of edges in a pslg to bounding boxes
+-function boundEdges(points, edges) {
+-  var bounds = new Array(edges.length)
+-  for(var i=0; i<edges.length; ++i) {
+-    var e = edges[i]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    bounds[i] = [
+-      Math.min(a[0], b[0]),
+-      Math.min(a[1], b[1]),
+-      Math.max(a[0], b[0]),
+-      Math.max(a[1], b[1]) ]
+-  }
+-  return bounds
++  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
+ }
+ 
+-//Convert a list of points into bounding boxes by duplicating coords
+-function boundPoints(points) {
+-  var bounds = new Array(points.length)
+-  for(var i=0; i<points.length; ++i) {
+-    var p = points[i]
+-    bounds[i] = [ p[0], p[1], p[0], p[1] ]
++function checked (length) {
++  // Note: cannot use `length < kMaxLength()` here because that fails when
++  // length is NaN (which is otherwise coerced to zero.)
++  if (length >= kMaxLength()) {
++    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
++                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
+   }
+-  return bounds
++  return length | 0
+ }
+ 
+-//Find all pairs of crossing edges in a pslg (given edge bounds)
+-function getCrossings(points, edges, edgeBounds) {
+-  var result = []
+-  boxIntersect(edgeBounds, function(i, j) {
+-    var e = edges[i]
+-    var f = edges[j]
+-    if(e[0] === f[0] || e[0] === f[1] ||
+-       e[1] === f[0] || e[1] === f[1]) {
+-         return
+-    }
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    var c = points[f[0]]
+-    var d = points[f[1]]
+-    if(segseg(a, b, c, d)) {
+-      result.push([i, j])
+-    }
+-  })
+-  return result
++function SlowBuffer (length) {
++  if (+length != length) { // eslint-disable-line eqeqeq
++    length = 0
++  }
++  return Buffer.alloc(+length)
+ }
+ 
+-//Find all pairs of crossing vertices in a pslg (given edge/vert bounds)
+-function getTJunctions(points, edges, edgeBounds, vertBounds) {
+-  var result = []
+-  boxIntersect(edgeBounds, vertBounds, function(i, v) {
+-    var e = edges[i]
+-    if(e[0] === v || e[1] === v) {
+-      return
+-    }
+-    var p = points[v]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    if(segseg(a, b, p, p)) {
+-      result.push([i, v])
+-    }
+-  })
+-  return result
++Buffer.isBuffer = function isBuffer (b) {
++  return !!(b != null && b._isBuffer)
+ }
+ 
++Buffer.compare = function compare (a, b) {
++  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
++    throw new TypeError('Arguments must be Buffers')
++  }
+ 
+-//Cut edges along crossings/tjunctions
+-function cutEdges(floatPoints, edges, crossings, junctions, useColor) {
++  if (a === b) return 0
+ 
+-  //Convert crossings into tjunctions by constructing rational points
+-  var ratPoints = []
+-  for(var i=0; i<crossings.length; ++i) {
+-    var crossing = crossings[i]
+-    var e = crossing[0]
+-    var f = crossing[1]
+-    var ee = edges[e]
+-    var ef = edges[f]
+-    var x = solveIntersection(
+-      ratVec(floatPoints[ee[0]]),
+-      ratVec(floatPoints[ee[1]]),
+-      ratVec(floatPoints[ef[0]]),
+-      ratVec(floatPoints[ef[1]]))
+-    if(!x) {
+-      //Segments are parallel, should already be handled by t-junctions
+-      continue
+-    }
+-    var idx = ratPoints.length + floatPoints.length
+-    ratPoints.push(x)
+-    junctions.push([e, idx], [f, idx])
+-  }
++  var x = a.length
++  var y = b.length
+ 
+-  //Sort tjunctions
+-  function getPoint(idx) {
+-    if(idx >= floatPoints.length) {
+-      return ratPoints[idx-floatPoints.length]
++  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
++    if (a[i] !== b[i]) {
++      x = a[i]
++      y = b[i]
++      break
+     }
+-    var p = floatPoints[idx]
+-    return [ rat(p[0]), rat(p[1]) ]
+   }
+-  junctions.sort(function(a, b) {
+-    if(a[0] !== b[0]) {
+-      return a[0] - b[0]
+-    }
+-    var u = getPoint(a[1])
+-    var v = getPoint(b[1])
+-    return ratCmp(u[0], v[0]) || ratCmp(u[1], v[1])
+-  })
+-
+-  //Split edges along junctions
+-  for(var i=junctions.length-1; i>=0; --i) {
+-    var junction = junctions[i]
+-    var e = junction[0]
+ 
+-    var edge = edges[e]
+-    var s = edge[0]
+-    var t = edge[1]
++  if (x < y) return -1
++  if (y < x) return 1
++  return 0
++}
+ 
+-    //Check if edge is not lexicographically sorted
+-    var a = floatPoints[s]
+-    var b = floatPoints[t]
+-    if(((a[0] - b[0]) || (a[1] - b[1])) < 0) {
+-      var tmp = s
+-      s = t
+-      t = tmp
+-    }
++Buffer.isEncoding = function isEncoding (encoding) {
++  switch (String(encoding).toLowerCase()) {
++    case 'hex':
++    case 'utf8':
++    case 'utf-8':
++    case 'ascii':
++    case 'latin1':
++    case 'binary':
++    case 'base64':
++    case 'ucs2':
++    case 'ucs-2':
++    case 'utf16le':
++    case 'utf-16le':
++      return true
++    default:
++      return false
++  }
++}
+ 
+-    //Split leading edge
+-    edge[0] = s
+-    var last = edge[1] = junction[1]
++Buffer.concat = function concat (list, length) {
++  if (!isArray(list)) {
++    throw new TypeError('"list" argument must be an Array of Buffers')
++  }
+ 
+-    //If we are grouping edges by color, remember to track data
+-    var color
+-    if(useColor) {
+-      color = edge[2]
+-    }
++  if (list.length === 0) {
++    return Buffer.alloc(0)
++  }
+ 
+-    //Split other edges
+-    while(i > 0 && junctions[i-1][0] === e) {
+-      var junction = junctions[--i]
+-      var next = junction[1]
+-      if(useColor) {
+-        edges.push([last, next, color])
+-      } else {
+-        edges.push([last, next])
+-      }
+-      last = next
++  var i
++  if (length === undefined) {
++    length = 0
++    for (i = 0; i < list.length; ++i) {
++      length += list[i].length
+     }
++  }
+ 
+-    //Add final edge
+-    if(useColor) {
+-      edges.push([last, t, color])
+-    } else {
+-      edges.push([last, t])
++  var buffer = Buffer.allocUnsafe(length)
++  var pos = 0
++  for (i = 0; i < list.length; ++i) {
++    var buf = list[i]
++    if (!Buffer.isBuffer(buf)) {
++      throw new TypeError('"list" argument must be an Array of Buffers')
+     }
++    buf.copy(buffer, pos)
++    pos += buf.length
+   }
+-
+-  //Return constructed rational points
+-  return ratPoints
++  return buffer
+ }
+ 
+-//Merge overlapping points
+-function dedupPoints(floatPoints, ratPoints, floatBounds) {
+-  var numPoints = floatPoints.length + ratPoints.length
+-  var uf        = new UnionFind(numPoints)
+-
+-  //Compute rational bounds
+-  var bounds = floatBounds
+-  for(var i=0; i<ratPoints.length; ++i) {
+-    var p = ratPoints[i]
+-    var xb = boundRat(p[0])
+-    var yb = boundRat(p[1])
+-    bounds.push([ xb[0], yb[0], xb[1], yb[1] ])
+-    floatPoints.push([ ratToFloat(p[0]), ratToFloat(p[1]) ])
++function byteLength (string, encoding) {
++  if (Buffer.isBuffer(string)) {
++    return string.length
++  }
++  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
++      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
++    return string.byteLength
++  }
++  if (typeof string !== 'string') {
++    string = '' + string
+   }
+ 
+-  //Link all points with over lapping boxes
+-  boxIntersect(bounds, function(i, j) {
+-    uf.link(i, j)
+-  })
++  var len = string.length
++  if (len === 0) return 0
+ 
+-  //Call find on each point to get a relabeling
+-  var ptr = 0
+-  var noDupes = true
+-  var labels = new Array(numPoints)
+-  for(var i=0; i<numPoints; ++i) {
+-    var j = uf.find(i)
+-    if(j === i) {
+-      //If not a duplicate, then don't bother
+-      labels[i] = ptr
+-      floatPoints[ptr++] = floatPoints[i]
+-    } else {
+-      //Clear no-dupes flag, zero out label
+-      noDupes = false
+-      labels[i] = -1
++  // Use a for loop to avoid recursion
++  var loweredCase = false
++  for (;;) {
++    switch (encoding) {
++      case 'ascii':
++      case 'latin1':
++      case 'binary':
++        return len
++      case 'utf8':
++      case 'utf-8':
++      case undefined:
++        return utf8ToBytes(string).length
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return len * 2
++      case 'hex':
++        return len >>> 1
++      case 'base64':
++        return base64ToBytes(string).length
++      default:
++        if (loweredCase) return utf8ToBytes(string).length // assume utf8
++        encoding = ('' + encoding).toLowerCase()
++        loweredCase = true
+     }
+   }
+-  floatPoints.length = ptr
+-
+-  //If no duplicates, return null to signal termination
+-  if(noDupes) {
+-    return null
+-  }
++}
++Buffer.byteLength = byteLength
+ 
+-  //Do a second pass to fix up missing labels
+-  for(var i=0; i<numPoints; ++i) {
+-    if(labels[i] < 0) {
+-      labels[i] = labels[uf.find(i)]
+-    }
+-  }
++function slowToString (encoding, start, end) {
++  var loweredCase = false
+ 
+-  //Return resulting union-find data structure
+-  return labels
+-}
++  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
++  // property of a typed array.
+ 
+-function compareLex2(a,b) { return (a[0]-b[0]) || (a[1]-b[1]) }
+-function compareLex3(a,b) {
+-  var d = (a[0] - b[0]) || (a[1] - b[1])
+-  if(d) {
+-    return d
++  // This behaves neither like String nor Uint8Array in that we set start/end
++  // to their upper/lower bounds if the value passed is out of range.
++  // undefined is handled specially as per ECMA-262 6th Edition,
++  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
++  if (start === undefined || start < 0) {
++    start = 0
+   }
+-  if(a[2] < b[2]) {
+-    return -1
+-  } else if(a[2] > b[2]) {
+-    return 1
++  // Return early if start > this.length. Done here to prevent potential uint32
++  // coercion fail below.
++  if (start > this.length) {
++    return ''
+   }
+-  return 0
+-}
+ 
+-//Remove duplicate edge labels
+-function dedupEdges(edges, labels, useColor) {
+-  if(edges.length === 0) {
+-    return
+-  }
+-  if(labels) {
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      var a = labels[e[0]]
+-      var b = labels[e[1]]
+-      e[0] = Math.min(a, b)
+-      e[1] = Math.max(a, b)
+-    }
+-  } else {
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      var a = e[0]
+-      var b = e[1]
+-      e[0] = Math.min(a, b)
+-      e[1] = Math.max(a, b)
+-    }
+-  }
+-  if(useColor) {
+-    edges.sort(compareLex3)
+-  } else {
+-    edges.sort(compareLex2)
+-  }
+-  var ptr = 1
+-  for(var i=1; i<edges.length; ++i) {
+-    var prev = edges[i-1]
+-    var next = edges[i]
+-    if(next[0] === prev[0] && next[1] === prev[1] &&
+-      (!useColor || next[2] === prev[2])) {
+-      continue
+-    }
+-    edges[ptr++] = next
++  if (end === undefined || end > this.length) {
++    end = this.length
+   }
+-  edges.length = ptr
+-}
+-
+-//Repeat until convergence
+-function snapRound(points, edges, useColor) {
+ 
+-  // 1. find edge crossings
+-  var edgeBounds = boundEdges(points, edges)
+-  var crossings  = getCrossings(points, edges, edgeBounds)
++  if (end <= 0) {
++    return ''
++  }
+ 
+-  // 2. find t-junctions
+-  var vertBounds = boundPoints(points)
+-  var tjunctions = getTJunctions(points, edges, edgeBounds, vertBounds)
++  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
++  end >>>= 0
++  start >>>= 0
+ 
+-  // 3. cut edges, construct rational points
+-  var ratPoints  = cutEdges(points, edges, crossings, tjunctions, useColor)
++  if (end <= start) {
++    return ''
++  }
+ 
+-  // 4. dedupe verts
+-  var labels     = dedupPoints(points, ratPoints, vertBounds)
++  if (!encoding) encoding = 'utf8'
+ 
+-  // 6. dedupe edges
+-  dedupEdges(edges, labels, useColor)
++  while (true) {
++    switch (encoding) {
++      case 'hex':
++        return hexSlice(this, start, end)
+ 
+-  // 5. check termination
+-  if(!labels) {
+-    return (crossings.length > 0 || tjunctions.length > 0)
+-  }
++      case 'utf8':
++      case 'utf-8':
++        return utf8Slice(this, start, end)
+ 
+-  // More iterations necessary
+-  return true
+-}
++      case 'ascii':
++        return asciiSlice(this, start, end)
+ 
+-//Main loop, runs PSLG clean up until completion
+-function cleanPSLG(points, edges, colors) {
+-  var modified = false
++      case 'latin1':
++      case 'binary':
++        return latin1Slice(this, start, end)
+ 
+-  //If using colors, augment edges with color data
+-  var prevEdges
+-  if(colors) {
+-    prevEdges = edges
+-    var augEdges = new Array(edges.length)
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      augEdges[i] = [e[0], e[1], colors[i]]
+-    }
+-    edges = augEdges
+-  }
++      case 'base64':
++        return base64Slice(this, start, end)
+ 
+-  //Run snap rounding until convergence
+-  while(snapRound(points, edges, !!colors)) {
+-    modified = true
+-  }
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return utf16leSlice(this, start, end)
+ 
+-  //Strip color tags
+-  if(!!colors && modified) {
+-    prevEdges.length = 0
+-    colors.length = 0
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      prevEdges.push([e[0], e[1]])
+-      colors.push(e[2])
++      default:
++        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
++        encoding = (encoding + '').toLowerCase()
++        loweredCase = true
+     }
+   }
+-
+-  return modified
+ }
+ 
+-},{"./lib/rat-seg-intersect":53,"big-rat":57,"big-rat/cmp":55,"big-rat/to-float":70,"box-intersect":71,"compare-cell":89,"nextafter":79,"rat-vec":81,"robust-segment-intersect":84,"union-find":85}],53:[function(require,module,exports){
+-'use strict'
+-
+-//TODO: Move this to a separate module
+-
+-module.exports = solveIntersection
++// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
++// Buffer instances.
++Buffer.prototype._isBuffer = true
+ 
+-var ratMul = require('big-rat/mul')
+-var ratDiv = require('big-rat/div')
+-var ratSub = require('big-rat/sub')
+-var ratSign = require('big-rat/sign')
+-var rvSub = require('rat-vec/sub')
+-var rvAdd = require('rat-vec/add')
+-var rvMuls = require('rat-vec/muls')
++function swap (b, n, m) {
++  var i = b[n]
++  b[n] = b[m]
++  b[m] = i
++}
+ 
+-var toFloat = require('big-rat/to-float')
++Buffer.prototype.swap16 = function swap16 () {
++  var len = this.length
++  if (len % 2 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 16-bits')
++  }
++  for (var i = 0; i < len; i += 2) {
++    swap(this, i, i + 1)
++  }
++  return this
++}
+ 
+-function ratPerp(a, b) {
+-  return ratSub(ratMul(a[0], b[1]), ratMul(a[1], b[0]))
++Buffer.prototype.swap32 = function swap32 () {
++  var len = this.length
++  if (len % 4 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 32-bits')
++  }
++  for (var i = 0; i < len; i += 4) {
++    swap(this, i, i + 3)
++    swap(this, i + 1, i + 2)
++  }
++  return this
+ }
+ 
+-//Solve for intersection
+-//  x = a + t (b-a)
+-//  (x - c) ^ (d-c) = 0
+-//  (t * (b-a) + (a-c) ) ^ (d-c) = 0
+-//  t * (b-a)^(d-c) = (d-c)^(a-c)
+-//  t = (d-c)^(a-c) / (b-a)^(d-c)
++Buffer.prototype.swap64 = function swap64 () {
++  var len = this.length
++  if (len % 8 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 64-bits')
++  }
++  for (var i = 0; i < len; i += 8) {
++    swap(this, i, i + 7)
++    swap(this, i + 1, i + 6)
++    swap(this, i + 2, i + 5)
++    swap(this, i + 3, i + 4)
++  }
++  return this
++}
+ 
+-function solveIntersection(a, b, c, d) {
+-  var ba = rvSub(b, a)
+-  var dc = rvSub(d, c)
++Buffer.prototype.toString = function toString () {
++  var length = this.length | 0
++  if (length === 0) return ''
++  if (arguments.length === 0) return utf8Slice(this, 0, length)
++  return slowToString.apply(this, arguments)
++}
+ 
+-  var baXdc = ratPerp(ba, dc)
++Buffer.prototype.equals = function equals (b) {
++  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
++  if (this === b) return true
++  return Buffer.compare(this, b) === 0
++}
+ 
+-  if(ratSign(baXdc) === 0) {
+-    return null
++Buffer.prototype.inspect = function inspect () {
++  var str = ''
++  var max = exports.INSPECT_MAX_BYTES
++  if (this.length > 0) {
++    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
++    if (this.length > max) str += ' ... '
+   }
++  return '<Buffer ' + str + '>'
++}
+ 
+-  var ac = rvSub(a, c)
+-  var dcXac = ratPerp(dc, ac)
++Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
++  if (!Buffer.isBuffer(target)) {
++    throw new TypeError('Argument must be a Buffer')
++  }
+ 
+-  var t = ratDiv(dcXac, baXdc)
++  if (start === undefined) {
++    start = 0
++  }
++  if (end === undefined) {
++    end = target ? target.length : 0
++  }
++  if (thisStart === undefined) {
++    thisStart = 0
++  }
++  if (thisEnd === undefined) {
++    thisEnd = this.length
++  }
+ 
+-  return rvAdd(a, rvMuls(ba, t))
+-}
++  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
++    throw new RangeError('out of range index')
++  }
+ 
+-},{"big-rat/div":56,"big-rat/mul":66,"big-rat/sign":68,"big-rat/sub":69,"big-rat/to-float":70,"rat-vec/add":80,"rat-vec/muls":82,"rat-vec/sub":83}],54:[function(require,module,exports){
+-'use strict'
++  if (thisStart >= thisEnd && start >= end) {
++    return 0
++  }
++  if (thisStart >= thisEnd) {
++    return -1
++  }
++  if (start >= end) {
++    return 1
++  }
+ 
+-var rationalize = require('./lib/rationalize')
++  start >>>= 0
++  end >>>= 0
++  thisStart >>>= 0
++  thisEnd >>>= 0
+ 
+-module.exports = add
++  if (this === target) return 0
+ 
+-function add(a, b) {
+-  return rationalize(
+-    a[0].mul(b[1]).add(b[0].mul(a[1])),
+-    a[1].mul(b[1]))
+-}
++  var x = thisEnd - thisStart
++  var y = end - start
++  var len = Math.min(x, y)
+ 
+-},{"./lib/rationalize":64}],55:[function(require,module,exports){
+-'use strict'
++  var thisCopy = this.slice(thisStart, thisEnd)
++  var targetCopy = target.slice(start, end)
+ 
+-module.exports = cmp
++  for (var i = 0; i < len; ++i) {
++    if (thisCopy[i] !== targetCopy[i]) {
++      x = thisCopy[i]
++      y = targetCopy[i]
++      break
++    }
++  }
+ 
+-function cmp(a, b) {
+-    return a[0].mul(b[1]).cmp(b[0].mul(a[1]))
++  if (x < y) return -1
++  if (y < x) return 1
++  return 0
+ }
+ 
+-},{}],56:[function(require,module,exports){
+-'use strict'
+-
+-var rationalize = require('./lib/rationalize')
++// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
++// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
++//
++// Arguments:
++// - buffer - a Buffer to search
++// - val - a string, Buffer, or number
++// - byteOffset - an index into `buffer`; will be clamped to an int32
++// - encoding - an optional encoding, relevant is val is a string
++// - dir - true for indexOf, false for lastIndexOf
++function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
++  // Empty buffer means no match
++  if (buffer.length === 0) return -1
++
++  // Normalize byteOffset
++  if (typeof byteOffset === 'string') {
++    encoding = byteOffset
++    byteOffset = 0
++  } else if (byteOffset > 0x7fffffff) {
++    byteOffset = 0x7fffffff
++  } else if (byteOffset < -0x80000000) {
++    byteOffset = -0x80000000
++  }
++  byteOffset = +byteOffset  // Coerce to Number.
++  if (isNaN(byteOffset)) {
++    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
++    byteOffset = dir ? 0 : (buffer.length - 1)
++  }
++
++  // Normalize byteOffset: negative offsets start from the end of the buffer
++  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
++  if (byteOffset >= buffer.length) {
++    if (dir) return -1
++    else byteOffset = buffer.length - 1
++  } else if (byteOffset < 0) {
++    if (dir) byteOffset = 0
++    else return -1
++  }
++
++  // Normalize val
++  if (typeof val === 'string') {
++    val = Buffer.from(val, encoding)
++  }
+ 
+-module.exports = div
++  // Finally, search either indexOf (if dir is true) or lastIndexOf
++  if (Buffer.isBuffer(val)) {
++    // Special case: looking for empty string/buffer always fails
++    if (val.length === 0) {
++      return -1
++    }
++    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
++  } else if (typeof val === 'number') {
++    val = val & 0xFF // Search for a byte value [0-255]
++    if (Buffer.TYPED_ARRAY_SUPPORT &&
++        typeof Uint8Array.prototype.indexOf === 'function') {
++      if (dir) {
++        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
++      } else {
++        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
++      }
++    }
++    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
++  }
+ 
+-function div(a, b) {
+-  return rationalize(a[0].mul(b[1]), a[1].mul(b[0]))
++  throw new TypeError('val must be string, number or Buffer')
+ }
+ 
+-},{"./lib/rationalize":64}],57:[function(require,module,exports){
+-'use strict'
+-
+-var isRat = require('./is-rat')
+-var isBN = require('./lib/is-bn')
+-var num2bn = require('./lib/num-to-bn')
+-var str2bn = require('./lib/str-to-bn')
+-var rationalize = require('./lib/rationalize')
+-var div = require('./div')
+-
+-module.exports = makeRational
++function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
++  var indexSize = 1
++  var arrLength = arr.length
++  var valLength = val.length
+ 
+-function makeRational(numer, denom) {
+-  if(isRat(numer)) {
+-    if(denom) {
+-      return div(numer, makeRational(denom))
++  if (encoding !== undefined) {
++    encoding = String(encoding).toLowerCase()
++    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
++        encoding === 'utf16le' || encoding === 'utf-16le') {
++      if (arr.length < 2 || val.length < 2) {
++        return -1
++      }
++      indexSize = 2
++      arrLength /= 2
++      valLength /= 2
++      byteOffset /= 2
+     }
+-    return [numer[0].clone(), numer[1].clone()]
+   }
+-  var shift = 0
+-  var a, b
+-  if(isBN(numer)) {
+-    a = numer.clone()
+-  } else if(typeof numer === 'string') {
+-    a = str2bn(numer)
+-  } else if(numer === 0) {
+-    return [num2bn(0), num2bn(1)]
+-  } else if(numer === Math.floor(numer)) {
+-    a = num2bn(numer)
+-  } else {
+-    while(numer !== Math.floor(numer)) {
+-      numer = numer * Math.pow(2, 256)
+-      shift -= 256
++
++  function read (buf, i) {
++    if (indexSize === 1) {
++      return buf[i]
++    } else {
++      return buf.readUInt16BE(i * indexSize)
+     }
+-    a = num2bn(numer)
+   }
+-  if(isRat(denom)) {
+-    a.mul(denom[1])
+-    b = denom[0].clone()
+-  } else if(isBN(denom)) {
+-    b = denom.clone()
+-  } else if(typeof denom === 'string') {
+-    b = str2bn(denom)
+-  } else if(!denom) {
+-    b = num2bn(1)
+-  } else if(denom === Math.floor(denom)) {
+-    b = num2bn(denom)
++
++  var i
++  if (dir) {
++    var foundIndex = -1
++    for (i = byteOffset; i < arrLength; i++) {
++      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
++        if (foundIndex === -1) foundIndex = i
++        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
++      } else {
++        if (foundIndex !== -1) i -= i - foundIndex
++        foundIndex = -1
++      }
++    }
+   } else {
+-    while(denom !== Math.floor(denom)) {
+-      denom = denom * Math.pow(2, 256)
+-      shift += 256
++    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
++    for (i = byteOffset; i >= 0; i--) {
++      var found = true
++      for (var j = 0; j < valLength; j++) {
++        if (read(arr, i + j) !== read(val, j)) {
++          found = false
++          break
++        }
++      }
++      if (found) return i
+     }
+-    b = num2bn(denom)
+-  }
+-  if(shift > 0) {
+-    a = a.shln(shift)
+-  } else if(shift < 0) {
+-    b = b.shln(-shift)
+   }
+-  return rationalize(a, b)
+-}
+-
+-},{"./div":56,"./is-rat":58,"./lib/is-bn":62,"./lib/num-to-bn":63,"./lib/rationalize":64,"./lib/str-to-bn":65}],58:[function(require,module,exports){
+-'use strict'
+-
+-var isBN = require('./lib/is-bn')
+-
+-module.exports = isRat
+ 
+-function isRat(x) {
+-  return Array.isArray(x) && x.length === 2 && isBN(x[0]) && isBN(x[1])
++  return -1
+ }
+ 
+-},{"./lib/is-bn":62}],59:[function(require,module,exports){
+-'use strict'
+-
+-var bn = require('bn.js')
+-
+-module.exports = sign
+-
+-function sign(x) {
+-  return x.cmp(new bn(0))
++Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
++  return this.indexOf(val, byteOffset, encoding) !== -1
+ }
+ 
+-},{"bn.js":67}],60:[function(require,module,exports){
+-'use strict'
++Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
++  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
++}
+ 
+-module.exports = bn2num
++Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
++  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
++}
+ 
+-//TODO: Make this better
+-function bn2num(b) {
+-  var l = b.length
+-  var words = b.words
+-  var out = 0
+-  if (l === 1) {
+-    out = words[0]
+-  } else if (l === 2) {
+-    out = words[0] + (words[1] * 0x4000000)
++function hexWrite (buf, string, offset, length) {
++  offset = Number(offset) || 0
++  var remaining = buf.length - offset
++  if (!length) {
++    length = remaining
+   } else {
+-    var out = 0
+-    for (var i = 0; i < l; i++) {
+-      var w = words[i]
+-      out += w * Math.pow(0x4000000, i)
++    length = Number(length)
++    if (length > remaining) {
++      length = remaining
+     }
+   }
+-  return b.sign ? -out : out
+-}
+-
+-},{}],61:[function(require,module,exports){
+-'use strict'
+-
+-var db = require('double-bits')
+-var ctz = require('bit-twiddle').countTrailingZeros
+ 
+-module.exports = ctzNumber
++  // must be an even number of digits
++  var strLen = string.length
++  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
+ 
+-//Counts the number of trailing zeros
+-function ctzNumber(x) {
+-  var l = ctz(db.lo(x))
+-  if(l < 32) {
+-    return l
++  if (length > strLen / 2) {
++    length = strLen / 2
+   }
+-  var h = ctz(db.hi(x))
+-  if(h > 20) {
+-    return 52
++  for (var i = 0; i < length; ++i) {
++    var parsed = parseInt(string.substr(i * 2, 2), 16)
++    if (isNaN(parsed)) return i
++    buf[offset + i] = parsed
+   }
+-  return h + 32
++  return i
+ }
+ 
+-},{"bit-twiddle":38,"double-bits":78}],62:[function(require,module,exports){
+-'use strict'
++function utf8Write (buf, string, offset, length) {
++  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
++}
+ 
+-var BN = require('bn.js')
++function asciiWrite (buf, string, offset, length) {
++  return blitBuffer(asciiToBytes(string), buf, offset, length)
++}
+ 
+-module.exports = isBN
++function latin1Write (buf, string, offset, length) {
++  return asciiWrite(buf, string, offset, length)
++}
+ 
+-//Test if x is a bignumber
+-//FIXME: obviously this is the wrong way to do it
+-function isBN(x) {
+-  return x && typeof x === 'object' && Boolean(x.words)
++function base64Write (buf, string, offset, length) {
++  return blitBuffer(base64ToBytes(string), buf, offset, length)
+ }
+ 
+-},{"bn.js":67}],63:[function(require,module,exports){
+-'use strict'
++function ucs2Write (buf, string, offset, length) {
++  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
++}
+ 
+-var BN = require('bn.js')
+-var db = require('double-bits')
++Buffer.prototype.write = function write (string, offset, length, encoding) {
++  // Buffer#write(string)
++  if (offset === undefined) {
++    encoding = 'utf8'
++    length = this.length
++    offset = 0
++  // Buffer#write(string, encoding)
++  } else if (length === undefined && typeof offset === 'string') {
++    encoding = offset
++    length = this.length
++    offset = 0
++  // Buffer#write(string, offset[, length][, encoding])
++  } else if (isFinite(offset)) {
++    offset = offset | 0
++    if (isFinite(length)) {
++      length = length | 0
++      if (encoding === undefined) encoding = 'utf8'
++    } else {
++      encoding = length
++      length = undefined
++    }
++  // legacy write(string, encoding, offset, length) - remove in v0.13
++  } else {
++    throw new Error(
++      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
++    )
++  }
+ 
+-module.exports = num2bn
++  var remaining = this.length - offset
++  if (length === undefined || length > remaining) length = remaining
+ 
+-function num2bn(x) {
+-  var e = db.exponent(x)
+-  if(e < 52) {
+-    return new BN(x)
+-  } else {
+-    return (new BN(x * Math.pow(2, 52-e))).shln(e-52)
++  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
++    throw new RangeError('Attempt to write outside buffer bounds')
+   }
+-}
+ 
+-},{"bn.js":67,"double-bits":78}],64:[function(require,module,exports){
+-'use strict'
++  if (!encoding) encoding = 'utf8'
+ 
+-var num2bn = require('./num-to-bn')
+-var sign = require('./bn-sign')
++  var loweredCase = false
++  for (;;) {
++    switch (encoding) {
++      case 'hex':
++        return hexWrite(this, string, offset, length)
+ 
+-module.exports = rationalize
++      case 'utf8':
++      case 'utf-8':
++        return utf8Write(this, string, offset, length)
+ 
+-function rationalize(numer, denom) {
+-  var snumer = sign(numer)
+-  var sdenom = sign(denom)
+-  if(snumer === 0) {
+-    return [num2bn(0), num2bn(1)]
+-  }
+-  if(sdenom === 0) {
+-    return [num2bn(0), num2bn(0)]
+-  }
+-  if(sdenom < 0) {
+-    numer = numer.neg()
+-    denom = denom.neg()
+-  }
+-  var d = numer.gcd(denom)
+-  if(d.cmpn(1)) {
+-    return [ numer.div(d), denom.div(d) ]
+-  }
+-  return [ numer, denom ]
+-}
++      case 'ascii':
++        return asciiWrite(this, string, offset, length)
+ 
+-},{"./bn-sign":59,"./num-to-bn":63}],65:[function(require,module,exports){
+-'use strict'
++      case 'latin1':
++      case 'binary':
++        return latin1Write(this, string, offset, length)
+ 
+-var BN = require('bn.js')
++      case 'base64':
++        // Warning: maxLength not taken into account in base64Write
++        return base64Write(this, string, offset, length)
+ 
+-module.exports = str2BN
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return ucs2Write(this, string, offset, length)
+ 
+-function str2BN(x) {
+-  return new BN(x)
++      default:
++        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
++        encoding = ('' + encoding).toLowerCase()
++        loweredCase = true
++    }
++  }
+ }
+ 
+-},{"bn.js":67}],66:[function(require,module,exports){
+-'use strict'
+-
+-var rationalize = require('./lib/rationalize')
+-
+-module.exports = mul
+-
+-function mul(a, b) {
+-  return rationalize(a[0].mul(b[0]), a[1].mul(b[1]))
++Buffer.prototype.toJSON = function toJSON () {
++  return {
++    type: 'Buffer',
++    data: Array.prototype.slice.call(this._arr || this, 0)
++  }
+ }
+ 
+-},{"./lib/rationalize":64}],67:[function(require,module,exports){
+-(function (module, exports) {
++function base64Slice (buf, start, end) {
++  if (start === 0 && end === buf.length) {
++    return base64.fromByteArray(buf)
++  } else {
++    return base64.fromByteArray(buf.slice(start, end))
++  }
++}
+ 
+-'use strict';
++function utf8Slice (buf, start, end) {
++  end = Math.min(buf.length, end)
++  var res = []
+ 
+-// Utils
++  var i = start
++  while (i < end) {
++    var firstByte = buf[i]
++    var codePoint = null
++    var bytesPerSequence = (firstByte > 0xEF) ? 4
++      : (firstByte > 0xDF) ? 3
++      : (firstByte > 0xBF) ? 2
++      : 1
+ 
+-function assert(val, msg) {
+-  if (!val)
+-    throw new Error(msg || 'Assertion failed');
+-}
++    if (i + bytesPerSequence <= end) {
++      var secondByte, thirdByte, fourthByte, tempCodePoint
+ 
+-// Could use `inherits` module, but don't want to move from single file
+-// architecture yet.
+-function inherits(ctor, superCtor) {
+-  ctor.super_ = superCtor;
+-  var TempCtor = function () {};
+-  TempCtor.prototype = superCtor.prototype;
+-  ctor.prototype = new TempCtor();
+-  ctor.prototype.constructor = ctor;
+-}
++      switch (bytesPerSequence) {
++        case 1:
++          if (firstByte < 0x80) {
++            codePoint = firstByte
++          }
++          break
++        case 2:
++          secondByte = buf[i + 1]
++          if ((secondByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
++            if (tempCodePoint > 0x7F) {
++              codePoint = tempCodePoint
++            }
++          }
++          break
++        case 3:
++          secondByte = buf[i + 1]
++          thirdByte = buf[i + 2]
++          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
++            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
++              codePoint = tempCodePoint
++            }
++          }
++          break
++        case 4:
++          secondByte = buf[i + 1]
++          thirdByte = buf[i + 2]
++          fourthByte = buf[i + 3]
++          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
++            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
++              codePoint = tempCodePoint
++            }
++          }
++      }
++    }
+ 
+-// BN
++    if (codePoint === null) {
++      // we did not generate a valid codePoint so insert a
++      // replacement char (U+FFFD) and advance only 1 byte
++      codePoint = 0xFFFD
++      bytesPerSequence = 1
++    } else if (codePoint > 0xFFFF) {
++      // encode to utf16 (surrogate pair dance)
++      codePoint -= 0x10000
++      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
++      codePoint = 0xDC00 | codePoint & 0x3FF
++    }
+ 
+-function BN(number, base, endian) {
+-  // May be `new BN(bn)` ?
+-  if (number !== null &&
+-      typeof number === 'object' &&
+-      Array.isArray(number.words)) {
+-    return number;
++    res.push(codePoint)
++    i += bytesPerSequence
+   }
+ 
+-  this.sign = false;
+-  this.words = null;
+-  this.length = 0;
++  return decodeCodePointsArray(res)
++}
+ 
+-  // Reduction context
+-  this.red = null;
++// Based on http://stackoverflow.com/a/22747272/680742, the browser with
++// the lowest limit is Chrome, with 0x10000 args.
++// We go 1 magnitude less, for safety
++var MAX_ARGUMENTS_LENGTH = 0x1000
+ 
+-  if (base === 'le' || base === 'be') {
+-    endian = base;
+-    base = 10;
++function decodeCodePointsArray (codePoints) {
++  var len = codePoints.length
++  if (len <= MAX_ARGUMENTS_LENGTH) {
++    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+   }
+ 
+-  if (number !== null)
+-    this._init(number || 0, base || 10, endian || 'be');
++  // Decode in chunks to avoid "call stack size exceeded".
++  var res = ''
++  var i = 0
++  while (i < len) {
++    res += String.fromCharCode.apply(
++      String,
++      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
++    )
++  }
++  return res
+ }
+-if (typeof module === 'object')
+-  module.exports = BN;
+-else
+-  exports.BN = BN;
+ 
+-BN.BN = BN;
+-BN.wordSize = 26;
++function asciiSlice (buf, start, end) {
++  var ret = ''
++  end = Math.min(buf.length, end)
+ 
+-BN.prototype._init = function init(number, base, endian) {
+-  if (typeof number === 'number') {
+-    return this._initNumber(number, base, endian);
+-  } else if (typeof number === 'object') {
+-    return this._initArray(number, base, endian);
++  for (var i = start; i < end; ++i) {
++    ret += String.fromCharCode(buf[i] & 0x7F)
+   }
+-  if (base === 'hex')
+-    base = 16;
+-  assert(base === (base | 0) && base >= 2 && base <= 36);
+-
+-  number = number.toString().replace(/\s+/g, '');
+-  var start = 0;
+-  if (number[0] === '-')
+-    start++;
+-
+-  if (base === 16)
+-    this._parseHex(number, start);
+-  else
+-    this._parseBase(number, base, start);
++  return ret
++}
+ 
+-  if (number[0] === '-')
+-    this.sign = true;
++function latin1Slice (buf, start, end) {
++  var ret = ''
++  end = Math.min(buf.length, end)
+ 
+-  this.strip();
++  for (var i = start; i < end; ++i) {
++    ret += String.fromCharCode(buf[i])
++  }
++  return ret
++}
+ 
+-  if (endian !== 'le')
+-    return;
++function hexSlice (buf, start, end) {
++  var len = buf.length
+ 
+-  this._initArray(this.toArray(), base, endian);
+-};
++  if (!start || start < 0) start = 0
++  if (!end || end < 0 || end > len) end = len
+ 
+-BN.prototype._initNumber = function _initNumber(number, base, endian) {
+-  if (number < 0) {
+-    this.sign = true;
+-    number = -number;
++  var out = ''
++  for (var i = start; i < end; ++i) {
++    out += toHex(buf[i])
+   }
+-  if (number < 0x4000000) {
+-    this.words = [ number & 0x3ffffff ];
+-    this.length = 1;
+-  } else if (number < 0x10000000000000) {
+-    this.words = [
+-      number & 0x3ffffff,
+-      (number / 0x4000000) & 0x3ffffff
+-    ];
+-    this.length = 2;
+-  } else {
+-    assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
+-    this.words = [
+-      number & 0x3ffffff,
+-      (number / 0x4000000) & 0x3ffffff,
+-      1
+-    ];
+-    this.length = 3;
++  return out
++}
++
++function utf16leSlice (buf, start, end) {
++  var bytes = buf.slice(start, end)
++  var res = ''
++  for (var i = 0; i < bytes.length; i += 2) {
++    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
+   }
++  return res
++}
+ 
+-  if (endian !== 'le')
+-    return;
++Buffer.prototype.slice = function slice (start, end) {
++  var len = this.length
++  start = ~~start
++  end = end === undefined ? len : ~~end
+ 
+-  // Reverse the bytes
+-  this._initArray(this.toArray(), base, endian);
+-};
++  if (start < 0) {
++    start += len
++    if (start < 0) start = 0
++  } else if (start > len) {
++    start = len
++  }
+ 
+-BN.prototype._initArray = function _initArray(number, base, endian) {
+-  // Perhaps a Uint8Array
+-  assert(typeof number.length === 'number');
+-  if (number.length <= 0) {
+-    this.words = [ 0 ];
+-    this.length = 1;
+-    return this;
++  if (end < 0) {
++    end += len
++    if (end < 0) end = 0
++  } else if (end > len) {
++    end = len
+   }
+ 
+-  this.length = Math.ceil(number.length / 3);
+-  this.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    this.words[i] = 0;
++  if (end < start) end = start
+ 
+-  var off = 0;
+-  if (endian === 'be') {
+-    for (var i = number.length - 1, j = 0; i >= 0; i -= 3) {
+-      var w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
+-      this.words[j] |= (w << off) & 0x3ffffff;
+-      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+-      off += 24;
+-      if (off >= 26) {
+-        off -= 26;
+-        j++;
+-      }
+-    }
+-  } else if (endian === 'le') {
+-    for (var i = 0, j = 0; i < number.length; i += 3) {
+-      var w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
+-      this.words[j] |= (w << off) & 0x3ffffff;
+-      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+-      off += 24;
+-      if (off >= 26) {
+-        off -= 26;
+-        j++;
+-      }
++  var newBuf
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    newBuf = this.subarray(start, end)
++    newBuf.__proto__ = Buffer.prototype
++  } else {
++    var sliceLen = end - start
++    newBuf = new Buffer(sliceLen, undefined)
++    for (var i = 0; i < sliceLen; ++i) {
++      newBuf[i] = this[i + start]
+     }
+   }
+-  return this.strip();
+-};
+-
+-function parseHex(str, start, end) {
+-  var r = 0;
+-  var len = Math.min(str.length, end);
+-  for (var i = start; i < len; i++) {
+-    var c = str.charCodeAt(i) - 48;
+ 
+-    r <<= 4;
++  return newBuf
++}
+ 
+-    // 'a' - 'f'
+-    if (c >= 49 && c <= 54)
+-      r |= c - 49 + 0xa;
++/*
++ * Need to make sure that buffer isn't trying to write out of bounds.
++ */
++function checkOffset (offset, ext, length) {
++  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
++  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
++}
+ 
+-    // 'A' - 'F'
+-    else if (c >= 17 && c <= 22)
+-      r |= c - 17 + 0xa;
++Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
+ 
+-    // '0' - '9'
+-    else
+-      r |= c & 0xf;
++  var val = this[offset]
++  var mul = 1
++  var i = 0
++  while (++i < byteLength && (mul *= 0x100)) {
++    val += this[offset + i] * mul
+   }
+-  return r;
+-}
+ 
+-BN.prototype._parseHex = function _parseHex(number, start) {
+-  // Create possibly bigger array to ensure that it fits the number
+-  this.length = Math.ceil((number.length - start) / 6);
+-  this.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    this.words[i] = 0;
++  return val
++}
+ 
+-  // Scan 24-bit chunks and add them to the number
+-  var off = 0;
+-  for (var i = number.length - 6, j = 0; i >= start; i -= 6) {
+-    var w = parseHex(number, i, i + 6);
+-    this.words[j] |= (w << off) & 0x3ffffff;
+-    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
+-    off += 24;
+-    if (off >= 26) {
+-      off -= 26;
+-      j++;
+-    }
+-  }
+-  if (i + 6 !== start) {
+-    var w = parseHex(number, start, i + 6);
+-    this.words[j] |= (w << off) & 0x3ffffff;
+-    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
++Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    checkOffset(offset, byteLength, this.length)
+   }
+-  this.strip();
+-};
+ 
+-function parseBase(str, start, end, mul) {
+-  var r = 0;
+-  var len = Math.min(str.length, end);
+-  for (var i = start; i < len; i++) {
+-    var c = str.charCodeAt(i) - 48;
++  var val = this[offset + --byteLength]
++  var mul = 1
++  while (byteLength > 0 && (mul *= 0x100)) {
++    val += this[offset + --byteLength] * mul
++  }
+ 
+-    r *= mul;
++  return val
++}
+ 
+-    // 'a'
+-    if (c >= 49)
+-      r += c - 49 + 0xa;
++Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 1, this.length)
++  return this[offset]
++}
+ 
+-    // 'A'
+-    else if (c >= 17)
+-      r += c - 17 + 0xa;
++Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  return this[offset] | (this[offset + 1] << 8)
++}
+ 
+-    // '0' - '9'
+-    else
+-      r += c;
+-  }
+-  return r;
++Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  return (this[offset] << 8) | this[offset + 1]
+ }
+ 
+-BN.prototype._parseBase = function _parseBase(number, base, start) {
+-  // Initialize as zero
+-  this.words = [ 0 ];
+-  this.length = 1;
++Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-  // Find length of limb in base
+-  for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base)
+-    limbLen++;
+-  limbLen--;
+-  limbPow = (limbPow / base) | 0;
++  return ((this[offset]) |
++      (this[offset + 1] << 8) |
++      (this[offset + 2] << 16)) +
++      (this[offset + 3] * 0x1000000)
++}
+ 
+-  var total = number.length - start;
+-  var mod = total % limbLen;
+-  var end = Math.min(total, total - mod) + start;
++Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-  var word = 0;
+-  for (var i = start; i < end; i += limbLen) {
+-    word = parseBase(number, i, i + limbLen, base);
++  return (this[offset] * 0x1000000) +
++    ((this[offset + 1] << 16) |
++    (this[offset + 2] << 8) |
++    this[offset + 3])
++}
+ 
+-    this.imuln(limbPow);
+-    if (this.words[0] + word < 0x4000000)
+-      this.words[0] += word;
+-    else
+-      this._iaddn(word);
++Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
++
++  var val = this[offset]
++  var mul = 1
++  var i = 0
++  while (++i < byteLength && (mul *= 0x100)) {
++    val += this[offset + i] * mul
+   }
++  mul *= 0x80
+ 
+-  if (mod !== 0) {
+-    var pow = 1;
+-    var word = parseBase(number, i, number.length, base);
++  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+ 
+-    for (var i = 0; i < mod; i++)
+-      pow *= base;
+-    this.imuln(pow);
+-    if (this.words[0] + word < 0x4000000)
+-      this.words[0] += word;
+-    else
+-      this._iaddn(word);
+-  }
+-};
++  return val
++}
+ 
+-BN.prototype.copy = function copy(dest) {
+-  dest.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    dest.words[i] = this.words[i];
+-  dest.length = this.length;
+-  dest.sign = this.sign;
+-  dest.red = this.red;
+-};
++Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
+ 
+-BN.prototype.clone = function clone() {
+-  var r = new BN(null);
+-  this.copy(r);
+-  return r;
+-};
++  var i = byteLength
++  var mul = 1
++  var val = this[offset + --i]
++  while (i > 0 && (mul *= 0x100)) {
++    val += this[offset + --i] * mul
++  }
++  mul *= 0x80
+ 
+-// Remove leading `0` from `this`
+-BN.prototype.strip = function strip() {
+-  while (this.length > 1 && this.words[this.length - 1] === 0)
+-    this.length--;
+-  return this._normSign();
+-};
++  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+ 
+-BN.prototype._normSign = function _normSign() {
+-  // -0 = 0
+-  if (this.length === 1 && this.words[0] === 0)
+-    this.sign = false;
+-  return this;
+-};
++  return val
++}
+ 
+-BN.prototype.inspect = function inspect() {
+-  return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
+-};
+-
+-/*
++Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 1, this.length)
++  if (!(this[offset] & 0x80)) return (this[offset])
++  return ((0xff - this[offset] + 1) * -1)
++}
+ 
+-var zeros = [];
+-var groupSizes = [];
+-var groupBases = [];
++Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  var val = this[offset] | (this[offset + 1] << 8)
++  return (val & 0x8000) ? val | 0xFFFF0000 : val
++}
+ 
+-var s = '';
+-var i = -1;
+-while (++i < BN.wordSize) {
+-  zeros[i] = s;
+-  s += '0';
++Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  var val = this[offset + 1] | (this[offset] << 8)
++  return (val & 0x8000) ? val | 0xFFFF0000 : val
+ }
+-groupSizes[0] = 0;
+-groupSizes[1] = 0;
+-groupBases[0] = 0;
+-groupBases[1] = 0;
+-var base = 2 - 1;
+-while (++base < 36 + 1) {
+-  var groupSize = 0;
+-  var groupBase = 1;
+-  while (groupBase < (1 << BN.wordSize) / base) {
+-    groupBase *= base;
+-    groupSize += 1;
+-  }
+-  groupSizes[base] = groupSize;
+-  groupBases[base] = groupBase;
++
++Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
++
++  return (this[offset]) |
++    (this[offset + 1] << 8) |
++    (this[offset + 2] << 16) |
++    (this[offset + 3] << 24)
+ }
+ 
+-*/
++Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-var zeros = [
+-  '',
+-  '0',
+-  '00',
+-  '000',
+-  '0000',
+-  '00000',
+-  '000000',
+-  '0000000',
+-  '00000000',
+-  '000000000',
+-  '0000000000',
+-  '00000000000',
+-  '000000000000',
+-  '0000000000000',
+-  '00000000000000',
+-  '000000000000000',
+-  '0000000000000000',
+-  '00000000000000000',
+-  '000000000000000000',
+-  '0000000000000000000',
+-  '00000000000000000000',
+-  '000000000000000000000',
+-  '0000000000000000000000',
+-  '00000000000000000000000',
+-  '000000000000000000000000',
+-  '0000000000000000000000000'
+-];
++  return (this[offset] << 24) |
++    (this[offset + 1] << 16) |
++    (this[offset + 2] << 8) |
++    (this[offset + 3])
++}
+ 
+-var groupSizes = [
+-  0, 0,
+-  25, 16, 12, 11, 10, 9, 8,
+-  8, 7, 7, 7, 7, 6, 6,
+-  6, 6, 6, 6, 6, 5, 5,
+-  5, 5, 5, 5, 5, 5, 5,
+-  5, 5, 5, 5, 5, 5, 5
+-];
++Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
++  return ieee754.read(this, offset, true, 23, 4)
++}
+ 
+-var groupBases = [
+-  0, 0,
+-  33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
+-  43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
+-  16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
+-  6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
+-  24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
+-];
++Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
++  return ieee754.read(this, offset, false, 23, 4)
++}
+ 
+-BN.prototype.toString = function toString(base, padding) {
+-  base = base || 10;
+-  if (base === 16 || base === 'hex') {
+-    var out = '';
+-    var off = 0;
+-    var padding = padding | 0 || 1;
+-    var carry = 0;
+-    for (var i = 0; i < this.length; i++) {
+-      var w = this.words[i];
+-      var word = (((w << off) | carry) & 0xffffff).toString(16);
+-      carry = (w >>> (24 - off)) & 0xffffff;
+-      if (carry !== 0 || i !== this.length - 1)
+-        out = zeros[6 - word.length] + word + out;
+-      else
+-        out = word + out;
+-      off += 2;
+-      if (off >= 26) {
+-        off -= 26;
+-        i--;
+-      }
+-    }
+-    if (carry !== 0)
+-      out = carry.toString(16) + out;
+-    while (out.length % padding !== 0)
+-      out = '0' + out;
+-    if (this.sign)
+-      out = '-' + out;
+-    return out;
+-  } else if (base === (base | 0) && base >= 2 && base <= 36) {
+-    // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
+-    var groupSize = groupSizes[base];
+-    // var groupBase = Math.pow(base, groupSize);
+-    var groupBase = groupBases[base];
+-    var out = '';
+-    var c = this.clone();
+-    c.sign = false;
+-    while (c.cmpn(0) !== 0) {
+-      var r = c.modn(groupBase).toString(base);
+-      c = c.idivn(groupBase);
++Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 8, this.length)
++  return ieee754.read(this, offset, true, 52, 8)
++}
+ 
+-      if (c.cmpn(0) !== 0)
+-        out = zeros[groupSize - r.length] + r + out;
+-      else
+-        out = r + out;
+-    }
+-    if (this.cmpn(0) === 0)
+-      out = '0' + out;
+-    if (this.sign)
+-      out = '-' + out;
+-    return out;
+-  } else {
+-    assert(false, 'Base should be between 2 and 36');
+-  }
+-};
++Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 8, this.length)
++  return ieee754.read(this, offset, false, 52, 8)
++}
+ 
+-BN.prototype.toJSON = function toJSON() {
+-  return this.toString(16);
+-};
++function checkInt (buf, value, offset, ext, max, min) {
++  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
++  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
++  if (offset + ext > buf.length) throw new RangeError('Index out of range')
++}
+ 
+-BN.prototype.toArray = function toArray(endian) {
+-  this.strip();
+-  var res = new Array(this.byteLength());
+-  res[0] = 0;
++Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    var maxBytes = Math.pow(2, 8 * byteLength) - 1
++    checkInt(this, value, offset, byteLength, maxBytes, 0)
++  }
+ 
+-  var q = this.clone();
+-  if (endian !== 'le') {
+-    // Assume big-endian
+-    for (var i = 0; q.cmpn(0) !== 0; i++) {
+-      var b = q.andln(0xff);
+-      q.ishrn(8);
++  var mul = 1
++  var i = 0
++  this[offset] = value & 0xFF
++  while (++i < byteLength && (mul *= 0x100)) {
++    this[offset + i] = (value / mul) & 0xFF
++  }
+ 
+-      res[res.length - i - 1] = b;
+-    }
+-  } else {
+-    // Assume little-endian
+-    for (var i = 0; q.cmpn(0) !== 0; i++) {
+-      var b = q.andln(0xff);
+-      q.ishrn(8);
++  return offset + byteLength
++}
+ 
+-      res[i] = b;
+-    }
++Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    var maxBytes = Math.pow(2, 8 * byteLength) - 1
++    checkInt(this, value, offset, byteLength, maxBytes, 0)
+   }
+ 
+-  return res;
+-};
++  var i = byteLength - 1
++  var mul = 1
++  this[offset + i] = value & 0xFF
++  while (--i >= 0 && (mul *= 0x100)) {
++    this[offset + i] = (value / mul) & 0xFF
++  }
+ 
+-if (Math.clz32) {
+-  BN.prototype._countBits = function _countBits(w) {
+-    return 32 - Math.clz32(w);
+-  };
+-} else {
+-  BN.prototype._countBits = function _countBits(w) {
+-    var t = w;
+-    var r = 0;
+-    if (t >= 0x1000) {
+-      r += 13;
+-      t >>>= 13;
+-    }
+-    if (t >= 0x40) {
+-      r += 7;
+-      t >>>= 7;
+-    }
+-    if (t >= 0x8) {
+-      r += 4;
+-      t >>>= 4;
+-    }
+-    if (t >= 0x02) {
+-      r += 2;
+-      t >>>= 2;
+-    }
+-    return r + t;
+-  };
++  return offset + byteLength
+ }
+ 
+-BN.prototype._zeroBits = function _zeroBits(w) {
+-  // Short-cut
+-  if (w === 0)
+-    return 26;
++Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
++  this[offset] = (value & 0xff)
++  return offset + 1
++}
+ 
+-  var t = w;
+-  var r = 0;
+-  if ((t & 0x1fff) === 0) {
+-    r += 13;
+-    t >>>= 13;
+-  }
+-  if ((t & 0x7f) === 0) {
+-    r += 7;
+-    t >>>= 7;
++function objectWriteUInt16 (buf, value, offset, littleEndian) {
++  if (value < 0) value = 0xffff + value + 1
++  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
++    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
++      (littleEndian ? i : 1 - i) * 8
+   }
+-  if ((t & 0xf) === 0) {
+-    r += 4;
+-    t >>>= 4;
++}
++
++Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++  } else {
++    objectWriteUInt16(this, value, offset, true)
+   }
+-  if ((t & 0x3) === 0) {
+-    r += 2;
+-    t >>>= 2;
++  return offset + 2
++}
++
++Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 8)
++    this[offset + 1] = (value & 0xff)
++  } else {
++    objectWriteUInt16(this, value, offset, false)
+   }
+-  if ((t & 0x1) === 0)
+-    r++;
+-  return r;
+-};
++  return offset + 2
++}
+ 
+-// Return number of used bits in a BN
+-BN.prototype.bitLength = function bitLength() {
+-  var hi = 0;
+-  var w = this.words[this.length - 1];
+-  var hi = this._countBits(w);
+-  return (this.length - 1) * 26 + hi;
+-};
++function objectWriteUInt32 (buf, value, offset, littleEndian) {
++  if (value < 0) value = 0xffffffff + value + 1
++  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
++    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
++  }
++}
+ 
+-// Number of trailing zero bits
+-BN.prototype.zeroBits = function zeroBits() {
+-  if (this.cmpn(0) === 0)
+-    return 0;
++Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset + 3] = (value >>> 24)
++    this[offset + 2] = (value >>> 16)
++    this[offset + 1] = (value >>> 8)
++    this[offset] = (value & 0xff)
++  } else {
++    objectWriteUInt32(this, value, offset, true)
++  }
++  return offset + 4
++}
+ 
+-  var r = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var b = this._zeroBits(this.words[i]);
+-    r += b;
+-    if (b !== 26)
+-      break;
++Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 24)
++    this[offset + 1] = (value >>> 16)
++    this[offset + 2] = (value >>> 8)
++    this[offset + 3] = (value & 0xff)
++  } else {
++    objectWriteUInt32(this, value, offset, false)
+   }
+-  return r;
+-};
++  return offset + 4
++}
+ 
+-BN.prototype.byteLength = function byteLength() {
+-  return Math.ceil(this.bitLength() / 8);
+-};
++Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) {
++    var limit = Math.pow(2, 8 * byteLength - 1)
+ 
+-// Return negative clone of `this`
+-BN.prototype.neg = function neg() {
+-  if (this.cmpn(0) === 0)
+-    return this.clone();
++    checkInt(this, value, offset, byteLength, limit - 1, -limit)
++  }
+ 
+-  var r = this.clone();
+-  r.sign = !this.sign;
+-  return r;
+-};
++  var i = 0
++  var mul = 1
++  var sub = 0
++  this[offset] = value & 0xFF
++  while (++i < byteLength && (mul *= 0x100)) {
++    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
++      sub = 1
++    }
++    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
++  }
+ 
++  return offset + byteLength
++}
+ 
+-// Or `num` with `this` in-place
+-BN.prototype.ior = function ior(num) {
+-  this.sign = this.sign || num.sign;
++Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) {
++    var limit = Math.pow(2, 8 * byteLength - 1)
+ 
+-  while (this.length < num.length)
+-    this.words[this.length++] = 0;
++    checkInt(this, value, offset, byteLength, limit - 1, -limit)
++  }
+ 
+-  for (var i = 0; i < num.length; i++)
+-    this.words[i] = this.words[i] | num.words[i];
++  var i = byteLength - 1
++  var mul = 1
++  var sub = 0
++  this[offset + i] = value & 0xFF
++  while (--i >= 0 && (mul *= 0x100)) {
++    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
++      sub = 1
++    }
++    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
++  }
+ 
+-  return this.strip();
+-};
++  return offset + byteLength
++}
+ 
++Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
++  if (value < 0) value = 0xff + value + 1
++  this[offset] = (value & 0xff)
++  return offset + 1
++}
+ 
+-// Or `num` with `this`
+-BN.prototype.or = function or(num) {
+-  if (this.length > num.length)
+-    return this.clone().ior(num);
+-  else
+-    return num.clone().ior(this);
+-};
++Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++  } else {
++    objectWriteUInt16(this, value, offset, true)
++  }
++  return offset + 2
++}
+ 
++Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 8)
++    this[offset + 1] = (value & 0xff)
++  } else {
++    objectWriteUInt16(this, value, offset, false)
++  }
++  return offset + 2
++}
+ 
+-// And `num` with `this` in-place
+-BN.prototype.iand = function iand(num) {
+-  this.sign = this.sign && num.sign;
++Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++    this[offset + 2] = (value >>> 16)
++    this[offset + 3] = (value >>> 24)
++  } else {
++    objectWriteUInt32(this, value, offset, true)
++  }
++  return offset + 4
++}
+ 
+-  // b = min-length(num, this)
+-  var b;
+-  if (this.length > num.length)
+-    b = num;
+-  else
+-    b = this;
++Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
++  if (value < 0) value = 0xffffffff + value + 1
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 24)
++    this[offset + 1] = (value >>> 16)
++    this[offset + 2] = (value >>> 8)
++    this[offset + 3] = (value & 0xff)
++  } else {
++    objectWriteUInt32(this, value, offset, false)
++  }
++  return offset + 4
++}
+ 
+-  for (var i = 0; i < b.length; i++)
+-    this.words[i] = this.words[i] & num.words[i];
++function checkIEEE754 (buf, value, offset, ext, max, min) {
++  if (offset + ext > buf.length) throw new RangeError('Index out of range')
++  if (offset < 0) throw new RangeError('Index out of range')
++}
+ 
+-  this.length = b.length;
++function writeFloat (buf, value, offset, littleEndian, noAssert) {
++  if (!noAssert) {
++    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
++  }
++  ieee754.write(buf, value, offset, littleEndian, 23, 4)
++  return offset + 4
++}
+ 
+-  return this.strip();
+-};
++Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
++  return writeFloat(this, value, offset, true, noAssert)
++}
+ 
++Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
++  return writeFloat(this, value, offset, false, noAssert)
++}
+ 
+-// And `num` with `this`
+-BN.prototype.and = function and(num) {
+-  if (this.length > num.length)
+-    return this.clone().iand(num);
+-  else
+-    return num.clone().iand(this);
+-};
+-
+-
+-// Xor `num` with `this` in-place
+-BN.prototype.ixor = function ixor(num) {
+-  this.sign = this.sign || num.sign;
+-
+-  // a.length > b.length
+-  var a;
+-  var b;
+-  if (this.length > num.length) {
+-    a = this;
+-    b = num;
+-  } else {
+-    a = num;
+-    b = this;
++function writeDouble (buf, value, offset, littleEndian, noAssert) {
++  if (!noAssert) {
++    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
+   }
++  ieee754.write(buf, value, offset, littleEndian, 52, 8)
++  return offset + 8
++}
+ 
+-  for (var i = 0; i < b.length; i++)
+-    this.words[i] = a.words[i] ^ b.words[i];
+-
+-  if (this !== a)
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
+-
+-  this.length = a.length;
+-
+-  return this.strip();
+-};
+-
+-
+-// Xor `num` with `this`
+-BN.prototype.xor = function xor(num) {
+-  if (this.length > num.length)
+-    return this.clone().ixor(num);
+-  else
+-    return num.clone().ixor(this);
+-};
++Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
++  return writeDouble(this, value, offset, true, noAssert)
++}
+ 
++Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
++  return writeDouble(this, value, offset, false, noAssert)
++}
+ 
+-// Set `bit` of `this`
+-BN.prototype.setn = function setn(bit, val) {
+-  assert(typeof bit === 'number' && bit >= 0);
++// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
++Buffer.prototype.copy = function copy (target, targetStart, start, end) {
++  if (!start) start = 0
++  if (!end && end !== 0) end = this.length
++  if (targetStart >= target.length) targetStart = target.length
++  if (!targetStart) targetStart = 0
++  if (end > 0 && end < start) end = start
+ 
+-  var off = (bit / 26) | 0;
+-  var wbit = bit % 26;
++  // Copy 0 bytes; we're done
++  if (end === start) return 0
++  if (target.length === 0 || this.length === 0) return 0
+ 
+-  while (this.length <= off)
+-    this.words[this.length++] = 0;
++  // Fatal error conditions
++  if (targetStart < 0) {
++    throw new RangeError('targetStart out of bounds')
++  }
++  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
++  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+ 
+-  if (val)
+-    this.words[off] = this.words[off] | (1 << wbit);
+-  else
+-    this.words[off] = this.words[off] & ~(1 << wbit);
++  // Are we oob?
++  if (end > this.length) end = this.length
++  if (target.length - targetStart < end - start) {
++    end = target.length - targetStart + start
++  }
+ 
+-  return this.strip();
+-};
++  var len = end - start
++  var i
+ 
++  if (this === target && start < targetStart && targetStart < end) {
++    // descending copy from end
++    for (i = len - 1; i >= 0; --i) {
++      target[i + targetStart] = this[i + start]
++    }
++  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
++    // ascending copy from start
++    for (i = 0; i < len; ++i) {
++      target[i + targetStart] = this[i + start]
++    }
++  } else {
++    Uint8Array.prototype.set.call(
++      target,
++      this.subarray(start, start + len),
++      targetStart
++    )
++  }
+ 
+-// Add `num` to `this` in-place
+-BN.prototype.iadd = function iadd(num) {
+-  // negative + positive
+-  if (this.sign && !num.sign) {
+-    this.sign = false;
+-    var r = this.isub(num);
+-    this.sign = !this.sign;
+-    return this._normSign();
++  return len
++}
+ 
+-  // positive + negative
+-  } else if (!this.sign && num.sign) {
+-    num.sign = false;
+-    var r = this.isub(num);
+-    num.sign = true;
+-    return r._normSign();
++// Usage:
++//    buffer.fill(number[, offset[, end]])
++//    buffer.fill(buffer[, offset[, end]])
++//    buffer.fill(string[, offset[, end]][, encoding])
++Buffer.prototype.fill = function fill (val, start, end, encoding) {
++  // Handle string cases:
++  if (typeof val === 'string') {
++    if (typeof start === 'string') {
++      encoding = start
++      start = 0
++      end = this.length
++    } else if (typeof end === 'string') {
++      encoding = end
++      end = this.length
++    }
++    if (val.length === 1) {
++      var code = val.charCodeAt(0)
++      if (code < 256) {
++        val = code
++      }
++    }
++    if (encoding !== undefined && typeof encoding !== 'string') {
++      throw new TypeError('encoding must be a string')
++    }
++    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
++      throw new TypeError('Unknown encoding: ' + encoding)
++    }
++  } else if (typeof val === 'number') {
++    val = val & 255
+   }
+ 
+-  // a.length > b.length
+-  var a;
+-  var b;
+-  if (this.length > num.length) {
+-    a = this;
+-    b = num;
+-  } else {
+-    a = num;
+-    b = this;
++  // Invalid ranges are not set to a default, so can range check early.
++  if (start < 0 || this.length < start || this.length < end) {
++    throw new RangeError('Out of range index')
+   }
+ 
+-  var carry = 0;
+-  for (var i = 0; i < b.length; i++) {
+-    var r = a.words[i] + b.words[i] + carry;
+-    this.words[i] = r & 0x3ffffff;
+-    carry = r >>> 26;
+-  }
+-  for (; carry !== 0 && i < a.length; i++) {
+-    var r = a.words[i] + carry;
+-    this.words[i] = r & 0x3ffffff;
+-    carry = r >>> 26;
++  if (end <= start) {
++    return this
+   }
+ 
+-  this.length = a.length;
+-  if (carry !== 0) {
+-    this.words[this.length] = carry;
+-    this.length++;
+-  // Copy the rest of the words
+-  } else if (a !== this) {
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
+-  }
++  start = start >>> 0
++  end = end === undefined ? this.length : end >>> 0
+ 
+-  return this;
+-};
++  if (!val) val = 0
+ 
+-// Add `num` to `this`
+-BN.prototype.add = function add(num) {
+-  if (num.sign && !this.sign) {
+-    num.sign = false;
+-    var res = this.sub(num);
+-    num.sign = true;
+-    return res;
+-  } else if (!num.sign && this.sign) {
+-    this.sign = false;
+-    var res = num.sub(this);
+-    this.sign = true;
+-    return res;
++  var i
++  if (typeof val === 'number') {
++    for (i = start; i < end; ++i) {
++      this[i] = val
++    }
++  } else {
++    var bytes = Buffer.isBuffer(val)
++      ? val
++      : utf8ToBytes(new Buffer(val, encoding).toString())
++    var len = bytes.length
++    for (i = 0; i < end - start; ++i) {
++      this[i + start] = bytes[i % len]
++    }
+   }
+ 
+-  if (this.length > num.length)
+-    return this.clone().iadd(num);
+-  else
+-    return num.clone().iadd(this);
+-};
++  return this
++}
+ 
+-// Subtract `num` from `this` in-place
+-BN.prototype.isub = function isub(num) {
+-  // this - (-num) = this + num
+-  if (num.sign) {
+-    num.sign = false;
+-    var r = this.iadd(num);
+-    num.sign = true;
+-    return r._normSign();
++// HELPER FUNCTIONS
++// ================
+ 
+-  // -this - num = -(this + num)
+-  } else if (this.sign) {
+-    this.sign = false;
+-    this.iadd(num);
+-    this.sign = true;
+-    return this._normSign();
++var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
++
++function base64clean (str) {
++  // Node strips out invalid characters like \n and \t from the string, base64-js does not
++  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
++  // Node converts strings with length < 2 to ''
++  if (str.length < 2) return ''
++  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
++  while (str.length % 4 !== 0) {
++    str = str + '='
+   }
++  return str
++}
+ 
+-  // At this point both numbers are positive
+-  var cmp = this.cmp(num);
++function stringtrim (str) {
++  if (str.trim) return str.trim()
++  return str.replace(/^\s+|\s+$/g, '')
++}
+ 
+-  // Optimization - zeroify
+-  if (cmp === 0) {
+-    this.sign = false;
+-    this.length = 1;
+-    this.words[0] = 0;
+-    return this;
+-  }
++function toHex (n) {
++  if (n < 16) return '0' + n.toString(16)
++  return n.toString(16)
++}
+ 
+-  // a > b
+-  var a;
+-  var b;
+-  if (cmp > 0) {
+-    a = this;
+-    b = num;
+-  } else {
+-    a = num;
+-    b = this;
+-  }
++function utf8ToBytes (string, units) {
++  units = units || Infinity
++  var codePoint
++  var length = string.length
++  var leadSurrogate = null
++  var bytes = []
+ 
+-  var carry = 0;
+-  for (var i = 0; i < b.length; i++) {
+-    var r = a.words[i] - b.words[i] + carry;
+-    carry = r >> 26;
+-    this.words[i] = r & 0x3ffffff;
+-  }
+-  for (; carry !== 0 && i < a.length; i++) {
+-    var r = a.words[i] + carry;
+-    carry = r >> 26;
+-    this.words[i] = r & 0x3ffffff;
+-  }
++  for (var i = 0; i < length; ++i) {
++    codePoint = string.charCodeAt(i)
+ 
+-  // Copy rest of the words
+-  if (carry === 0 && i < a.length && a !== this)
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
+-  this.length = Math.max(this.length, i);
++    // is surrogate component
++    if (codePoint > 0xD7FF && codePoint < 0xE000) {
++      // last char was a lead
++      if (!leadSurrogate) {
++        // no lead yet
++        if (codePoint > 0xDBFF) {
++          // unexpected trail
++          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++          continue
++        } else if (i + 1 === length) {
++          // unpaired lead
++          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++          continue
++        }
+ 
+-  if (a !== this)
+-    this.sign = true;
++        // valid lead
++        leadSurrogate = codePoint
+ 
+-  return this.strip();
+-};
++        continue
++      }
+ 
+-// Subtract `num` from `this`
+-BN.prototype.sub = function sub(num) {
+-  return this.clone().isub(num);
+-};
++      // 2 leads in a row
++      if (codePoint < 0xDC00) {
++        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++        leadSurrogate = codePoint
++        continue
++      }
+ 
+-/*
+-// NOTE: This could be potentionally used to generate loop-less multiplications
+-function _genCombMulTo(alen, blen) {
+-  var len = alen + blen - 1;
+-  var src = [
+-    'var a = this.words, b = num.words, o = out.words, c = 0, w, ' +
+-        'mask = 0x3ffffff, shift = 0x4000000;',
+-    'out.length = ' + len + ';'
+-  ];
+-  for (var k = 0; k < len; k++) {
+-    var minJ = Math.max(0, k - alen + 1);
+-    var maxJ = Math.min(k, blen - 1);
++      // valid surrogate pair
++      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
++    } else if (leadSurrogate) {
++      // valid bmp char, but last char was a lead
++      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++    }
+ 
+-    for (var j = minJ; j <= maxJ; j++) {
+-      var i = k - j;
+-      var mul = 'a[' + i + '] * b[' + j + ']';
++    leadSurrogate = null
+ 
+-      if (j === minJ) {
+-        src.push('w = ' + mul + ' + c;');
+-        src.push('c = (w / shift) | 0;');
+-      } else {
+-        src.push('w += ' + mul + ';');
+-        src.push('c += (w / shift) | 0;');
+-      }
+-      src.push('w &= mask;');
++    // encode utf8
++    if (codePoint < 0x80) {
++      if ((units -= 1) < 0) break
++      bytes.push(codePoint)
++    } else if (codePoint < 0x800) {
++      if ((units -= 2) < 0) break
++      bytes.push(
++        codePoint >> 0x6 | 0xC0,
++        codePoint & 0x3F | 0x80
++      )
++    } else if (codePoint < 0x10000) {
++      if ((units -= 3) < 0) break
++      bytes.push(
++        codePoint >> 0xC | 0xE0,
++        codePoint >> 0x6 & 0x3F | 0x80,
++        codePoint & 0x3F | 0x80
++      )
++    } else if (codePoint < 0x110000) {
++      if ((units -= 4) < 0) break
++      bytes.push(
++        codePoint >> 0x12 | 0xF0,
++        codePoint >> 0xC & 0x3F | 0x80,
++        codePoint >> 0x6 & 0x3F | 0x80,
++        codePoint & 0x3F | 0x80
++      )
++    } else {
++      throw new Error('Invalid code point')
+     }
+-    src.push('o[' + k + '] = w;');
+   }
+-  src.push('if (c !== 0) {',
+-           '  o[' + k + '] = c;',
+-           '  out.length++;',
+-           '}',
+-           'return out;');
+ 
+-  return src.join('\n');
++  return bytes
+ }
+-*/
+ 
+-BN.prototype._smallMulTo = function _smallMulTo(num, out) {
+-  out.sign = num.sign !== this.sign;
+-  out.length = this.length + num.length;
++function asciiToBytes (str) {
++  var byteArray = []
++  for (var i = 0; i < str.length; ++i) {
++    // Node's code seems to be doing this and not & 0x7F..
++    byteArray.push(str.charCodeAt(i) & 0xFF)
++  }
++  return byteArray
++}
+ 
+-  var carry = 0;
+-  for (var k = 0; k < out.length - 1; k++) {
+-    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
+-    // note that ncarry could be >= 0x3ffffff
+-    var ncarry = carry >>> 26;
+-    var rword = carry & 0x3ffffff;
+-    var maxJ = Math.min(k, num.length - 1);
+-    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i] | 0;
+-      var b = num.words[j] | 0;
+-      var r = a * b;
++function utf16leToBytes (str, units) {
++  var c, hi, lo
++  var byteArray = []
++  for (var i = 0; i < str.length; ++i) {
++    if ((units -= 2) < 0) break
+ 
+-      var lo = r & 0x3ffffff;
+-      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
+-      lo = (lo + rword) | 0;
+-      rword = lo & 0x3ffffff;
+-      ncarry = (ncarry + (lo >>> 26)) | 0;
+-    }
+-    out.words[k] = rword;
+-    carry = ncarry;
++    c = str.charCodeAt(i)
++    hi = c >> 8
++    lo = c % 256
++    byteArray.push(lo)
++    byteArray.push(hi)
+   }
+-  if (carry !== 0) {
+-    out.words[k] = carry;
+-  } else {
+-    out.length--;
++
++  return byteArray
++}
++
++function base64ToBytes (str) {
++  return base64.toByteArray(base64clean(str))
++}
++
++function blitBuffer (src, dst, offset, length) {
++  for (var i = 0; i < length; ++i) {
++    if ((i + offset >= dst.length) || (i >= src.length)) break
++    dst[i + offset] = src[i]
+   }
++  return i
++}
+ 
+-  return out.strip();
+-};
++function isnan (val) {
++  return val !== val // eslint-disable-line no-self-compare
++}
+ 
+-BN.prototype._bigMulTo = function _bigMulTo(num, out) {
+-  out.sign = num.sign !== this.sign;
+-  out.length = this.length + num.length;
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"base64-js":46,"ieee754":164,"isarray":47}],46:[function(require,module,exports){
++'use strict'
+ 
+-  var carry = 0;
+-  var hncarry = 0;
+-  for (var k = 0; k < out.length - 1; k++) {
+-    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
+-    // note that ncarry could be >= 0x3ffffff
+-    var ncarry = hncarry;
+-    hncarry = 0;
+-    var rword = carry & 0x3ffffff;
+-    var maxJ = Math.min(k, num.length - 1);
+-    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i] | 0;
+-      var b = num.words[j] | 0;
+-      var r = a * b;
++exports.toByteArray = toByteArray
++exports.fromByteArray = fromByteArray
+ 
+-      var lo = r & 0x3ffffff;
+-      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
+-      lo = (lo + rword) | 0;
+-      rword = lo & 0x3ffffff;
+-      ncarry = (ncarry + (lo >>> 26)) | 0;
++var lookup = []
++var revLookup = []
++var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+ 
+-      hncarry += ncarry >>> 26;
+-      ncarry &= 0x3ffffff;
+-    }
+-    out.words[k] = rword;
+-    carry = ncarry;
+-    ncarry = hncarry;
+-  }
+-  if (carry !== 0) {
+-    out.words[k] = carry;
+-  } else {
+-    out.length--;
++function init () {
++  var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
++  for (var i = 0, len = code.length; i < len; ++i) {
++    lookup[i] = code[i]
++    revLookup[code.charCodeAt(i)] = i
+   }
+ 
+-  return out.strip();
+-};
++  revLookup['-'.charCodeAt(0)] = 62
++  revLookup['_'.charCodeAt(0)] = 63
++}
+ 
+-BN.prototype.mulTo = function mulTo(num, out) {
+-  var res;
+-  if (this.length + num.length < 63)
+-    res = this._smallMulTo(num, out);
+-  else
+-    res = this._bigMulTo(num, out);
+-  return res;
+-};
++init()
+ 
+-// Multiply `this` by `num`
+-BN.prototype.mul = function mul(num) {
+-  var out = new BN(null);
+-  out.words = new Array(this.length + num.length);
+-  return this.mulTo(num, out);
+-};
++function toByteArray (b64) {
++  var i, j, l, tmp, placeHolders, arr
++  var len = b64.length
+ 
+-// In-place Multiplication
+-BN.prototype.imul = function imul(num) {
+-  if (this.cmpn(0) === 0 || num.cmpn(0) === 0) {
+-    this.words[0] = 0;
+-    this.length = 1;
+-    return this;
++  if (len % 4 > 0) {
++    throw new Error('Invalid string. Length must be a multiple of 4')
+   }
+ 
+-  var tlen = this.length;
+-  var nlen = num.length;
++  // the number of equal signs (place holders)
++  // if there are two placeholders, than the two characters before it
++  // represent one byte
++  // if there is only one, then the three characters before it represent 2 bytes
++  // this is just a cheap hack to not do indexOf twice
++  placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
+ 
+-  this.sign = num.sign !== this.sign;
+-  this.length = this.length + num.length;
+-  this.words[this.length - 1] = 0;
++  // base64 is 4/3 + up to two characters of the original data
++  arr = new Arr(len * 3 / 4 - placeHolders)
+ 
+-  for (var k = this.length - 2; k >= 0; k--) {
+-    // Sum all words with the same `i + j = k` and accumulate `carry`,
+-    // note that carry could be >= 0x3ffffff
+-    var carry = 0;
+-    var rword = 0;
+-    var maxJ = Math.min(k, nlen - 1);
+-    for (var j = Math.max(0, k - tlen + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i];
+-      var b = num.words[j];
+-      var r = a * b;
++  // if there are placeholders, only get up to the last complete 4 chars
++  l = placeHolders > 0 ? len - 4 : len
+ 
+-      var lo = r & 0x3ffffff;
+-      carry += (r / 0x4000000) | 0;
+-      lo += rword;
+-      rword = lo & 0x3ffffff;
+-      carry += lo >>> 26;
+-    }
+-    this.words[k] = rword;
+-    this.words[k + 1] += carry;
+-    carry = 0;
++  var L = 0
++
++  for (i = 0, j = 0; i < l; i += 4, j += 3) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
++    arr[L++] = (tmp >> 16) & 0xFF
++    arr[L++] = (tmp >> 8) & 0xFF
++    arr[L++] = tmp & 0xFF
+   }
+ 
+-  // Propagate overflows
+-  var carry = 0;
+-  for (var i = 1; i < this.length; i++) {
+-    var w = this.words[i] + carry;
+-    this.words[i] = w & 0x3ffffff;
+-    carry = w >>> 26;
++  if (placeHolders === 2) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
++    arr[L++] = tmp & 0xFF
++  } else if (placeHolders === 1) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
++    arr[L++] = (tmp >> 8) & 0xFF
++    arr[L++] = tmp & 0xFF
+   }
+ 
+-  return this.strip();
+-};
++  return arr
++}
+ 
+-BN.prototype.imuln = function imuln(num) {
+-  assert(typeof num === 'number');
++function tripletToBase64 (num) {
++  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
++}
+ 
+-  // Carry
+-  var carry = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var w = this.words[i] * num;
+-    var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
+-    carry >>= 26;
+-    carry += (w / 0x4000000) | 0;
+-    // NOTE: lo is 27bit maximum
+-    carry += lo >>> 26;
+-    this.words[i] = lo & 0x3ffffff;
++function encodeChunk (uint8, start, end) {
++  var tmp
++  var output = []
++  for (var i = start; i < end; i += 3) {
++    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
++    output.push(tripletToBase64(tmp))
+   }
++  return output.join('')
++}
+ 
+-  if (carry !== 0) {
+-    this.words[i] = carry;
+-    this.length++;
++function fromByteArray (uint8) {
++  var tmp
++  var len = uint8.length
++  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
++  var output = ''
++  var parts = []
++  var maxChunkLength = 16383 // must be multiple of 3
++
++  // go through the array every three bytes, we'll deal with trailing stuff later
++  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
++    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+   }
+ 
+-  return this;
+-};
++  // pad the end with zeros, but make sure to not forget the extra bytes
++  if (extraBytes === 1) {
++    tmp = uint8[len - 1]
++    output += lookup[tmp >> 2]
++    output += lookup[(tmp << 4) & 0x3F]
++    output += '=='
++  } else if (extraBytes === 2) {
++    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
++    output += lookup[tmp >> 10]
++    output += lookup[(tmp >> 4) & 0x3F]
++    output += lookup[(tmp << 2) & 0x3F]
++    output += '='
++  }
+ 
+-BN.prototype.muln = function muln(num) {
+-  return this.clone().imuln(num);
+-};
++  parts.push(output)
+ 
+-// `this` * `this`
+-BN.prototype.sqr = function sqr() {
+-  return this.mul(this);
+-};
++  return parts.join('')
++}
+ 
+-// `this` * `this` in-place
+-BN.prototype.isqr = function isqr() {
+-  return this.mul(this);
+-};
++},{}],47:[function(require,module,exports){
++var toString = {}.toString;
+ 
+-// Shift-left in-place
+-BN.prototype.ishln = function ishln(bits) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var r = bits % 26;
+-  var s = (bits - r) / 26;
+-  var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
++module.exports = Array.isArray || function (arr) {
++  return toString.call(arr) == '[object Array]';
++};
+ 
+-  if (r !== 0) {
+-    var carry = 0;
+-    for (var i = 0; i < this.length; i++) {
+-      var newCarry = this.words[i] & carryMask;
+-      var c = (this.words[i] - newCarry) << r;
+-      this.words[i] = c | carry;
+-      carry = newCarry >>> (26 - r);
+-    }
+-    if (carry) {
+-      this.words[i] = carry;
+-      this.length++;
+-    }
+-  }
++},{}],48:[function(require,module,exports){
++'use strict'
+ 
+-  if (s !== 0) {
+-    for (var i = this.length - 1; i >= 0; i--)
+-      this.words[i + s] = this.words[i];
+-    for (var i = 0; i < s; i++)
+-      this.words[i] = 0;
+-    this.length += s;
+-  }
++var monotoneTriangulate = require('./lib/monotone')
++var makeIndex = require('./lib/triangulation')
++var delaunayFlip = require('./lib/delaunay')
++var filterTriangulation = require('./lib/filter')
+ 
+-  return this.strip();
+-};
++module.exports = cdt2d
+ 
+-// Shift-right in-place
+-// NOTE: `hint` is a lowest bit before trailing zeroes
+-// NOTE: if `extended` is present - it will be filled with destroyed bits
+-BN.prototype.ishrn = function ishrn(bits, hint, extended) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var h;
+-  if (hint)
+-    h = (hint - (hint % 26)) / 26;
+-  else
+-    h = 0;
++function canonicalizeEdge(e) {
++  return [Math.min(e[0], e[1]), Math.max(e[0], e[1])]
++}
+ 
+-  var r = bits % 26;
+-  var s = Math.min((bits - r) / 26, this.length);
+-  var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
+-  var maskedWords = extended;
++function compareEdge(a, b) {
++  return a[0]-b[0] || a[1]-b[1]
++}
+ 
+-  h -= s;
+-  h = Math.max(0, h);
++function canonicalizeEdges(edges) {
++  return edges.map(canonicalizeEdge).sort(compareEdge)
++}
+ 
+-  // Extended mode, copy masked part
+-  if (maskedWords) {
+-    for (var i = 0; i < s; i++)
+-      maskedWords.words[i] = this.words[i];
+-    maskedWords.length = s;
++function getDefault(options, property, dflt) {
++  if(property in options) {
++    return options[property]
+   }
++  return dflt
++}
+ 
+-  if (s === 0) {
+-    // No-op, we should not move anything at all
+-  } else if (this.length > s) {
+-    this.length -= s;
+-    for (var i = 0; i < this.length; i++)
+-      this.words[i] = this.words[i + s];
+-  } else {
+-    this.words[0] = 0;
+-    this.length = 1;
+-  }
++function cdt2d(points, edges, options) {
+ 
+-  var carry = 0;
+-  for (var i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
+-    var word = this.words[i];
+-    this.words[i] = (carry << (26 - r)) | (word >>> r);
+-    carry = word & mask;
++  if(!Array.isArray(edges)) {
++    options = edges || {}
++    edges = []
++  } else {
++    options = options || {}
++    edges = edges || []
+   }
+ 
+-  // Push carried bits as a mask
+-  if (maskedWords && carry !== 0)
+-    maskedWords.words[maskedWords.length++] = carry;
++  //Parse out options
++  var delaunay = !!getDefault(options, 'delaunay', true)
++  var interior = !!getDefault(options, 'interior', true)
++  var exterior = !!getDefault(options, 'exterior', true)
++  var infinity = !!getDefault(options, 'infinity', false)
+ 
+-  if (this.length === 0) {
+-    this.words[0] = 0;
+-    this.length = 1;
++  //Handle trivial case
++  if((!interior && !exterior) || points.length === 0) {
++    return []
+   }
+ 
+-  this.strip();
+-
+-  return this;
+-};
++  //Construct initial triangulation
++  var cells = monotoneTriangulate(points, edges)
+ 
+-// Shift-left
+-BN.prototype.shln = function shln(bits) {
+-  return this.clone().ishln(bits);
+-};
++  //If delaunay refinement needed, then improve quality by edge flipping
++  if(delaunay || interior !== exterior || infinity) {
+ 
+-// Shift-right
+-BN.prototype.shrn = function shrn(bits) {
+-  return this.clone().ishrn(bits);
+-};
++    //Index all of the cells to support fast neighborhood queries
++    var triangulation = makeIndex(points.length, canonicalizeEdges(edges))
++    for(var i=0; i<cells.length; ++i) {
++      var f = cells[i]
++      triangulation.addTriangle(f[0], f[1], f[2])
++    }
+ 
+-// Test if n bit is set
+-BN.prototype.testn = function testn(bit) {
+-  assert(typeof bit === 'number' && bit >= 0);
+-  var r = bit % 26;
+-  var s = (bit - r) / 26;
+-  var q = 1 << r;
++    //Run edge flipping
++    if(delaunay) {
++      delaunayFlip(points, triangulation)
++    }
+ 
+-  // Fast case: bit is much higher than all existing words
+-  if (this.length <= s) {
+-    return false;
++    //Filter points
++    if(!exterior) {
++      return filterTriangulation(triangulation, -1)
++    } else if(!interior) {
++      return filterTriangulation(triangulation,  1, infinity)
++    } else if(infinity) {
++      return filterTriangulation(triangulation, 0, infinity)
++    } else {
++      return triangulation.cells()
++    }
++    
++  } else {
++    return cells
+   }
++}
+ 
+-  // Check bit and return
+-  var w = this.words[s];
+-
+-  return !!(w & q);
+-};
++},{"./lib/delaunay":49,"./lib/filter":50,"./lib/monotone":51,"./lib/triangulation":52}],49:[function(require,module,exports){
++'use strict'
+ 
+-// Return only lowers bits of number (in-place)
+-BN.prototype.imaskn = function imaskn(bits) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var r = bits % 26;
+-  var s = (bits - r) / 26;
++var inCircle = require('robust-in-sphere')[4]
++var bsearch = require('binary-search-bounds')
+ 
+-  assert(!this.sign, 'imaskn works only with positive numbers');
++module.exports = delaunayRefine
+ 
+-  if (r !== 0)
+-    s++;
+-  this.length = Math.min(s, this.length);
++function testFlip(points, triangulation, stack, a, b, x) {
++  var y = triangulation.opposite(a, b)
+ 
+-  if (r !== 0) {
+-    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
+-    this.words[this.length - 1] &= mask;
++  //Test boundary edge
++  if(y < 0) {
++    return
+   }
+ 
+-  return this.strip();
+-};
+-
+-// Return only lowers bits of number
+-BN.prototype.maskn = function maskn(bits) {
+-  return this.clone().imaskn(bits);
+-};
+-
+-// Add plain number `num` to `this`
+-BN.prototype.iaddn = function iaddn(num) {
+-  assert(typeof num === 'number');
+-  if (num < 0)
+-    return this.isubn(-num);
+-
+-  // Possible sign change
+-  if (this.sign) {
+-    if (this.length === 1 && this.words[0] < num) {
+-      this.words[0] = num - this.words[0];
+-      this.sign = false;
+-      return this;
+-    }
+-
+-    this.sign = false;
+-    this.isubn(num);
+-    this.sign = true;
+-    return this;
++  //Swap edge if order flipped
++  if(b < a) {
++    var tmp = a
++    a = b
++    b = tmp
++    tmp = x
++    x = y
++    y = tmp
+   }
+ 
+-  // Add without checks
+-  return this._iaddn(num);
+-};
+-
+-BN.prototype._iaddn = function _iaddn(num) {
+-  this.words[0] += num;
+-
+-  // Carry
+-  for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
+-    this.words[i] -= 0x4000000;
+-    if (i === this.length - 1)
+-      this.words[i + 1] = 1;
+-    else
+-      this.words[i + 1]++;
++  //Test if edge is constrained
++  if(triangulation.isConstraint(a, b)) {
++    return
+   }
+-  this.length = Math.max(this.length, i + 1);
+-
+-  return this;
+-};
+-
+-// Subtract plain number `num` from `this`
+-BN.prototype.isubn = function isubn(num) {
+-  assert(typeof num === 'number');
+-  if (num < 0)
+-    return this.iaddn(-num);
+ 
+-  if (this.sign) {
+-    this.sign = false;
+-    this.iaddn(num);
+-    this.sign = true;
+-    return this;
++  //Test if edge is delaunay
++  if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
++    stack.push(a, b)
+   }
++}
+ 
+-  this.words[0] -= num;
++//Assume edges are sorted lexicographically
++function delaunayRefine(points, triangulation) {
++  var stack = []
+ 
+-  // Carry
+-  for (var i = 0; i < this.length && this.words[i] < 0; i++) {
+-    this.words[i] += 0x4000000;
+-    this.words[i + 1] -= 1;
+-  }
++  var numPoints = points.length
++  var stars = triangulation.stars
++  for(var a=0; a<numPoints; ++a) {
++    var star = stars[a]
++    for(var j=1; j<star.length; j+=2) {
++      var b = star[j]
+ 
+-  return this.strip();
+-};
++      //If order is not consistent, then skip edge
++      if(b < a) {
++        continue
++      }
+ 
+-BN.prototype.addn = function addn(num) {
+-  return this.clone().iaddn(num);
+-};
++      //Check if edge is constrained
++      if(triangulation.isConstraint(a, b)) {
++        continue
++      }
+ 
+-BN.prototype.subn = function subn(num) {
+-  return this.clone().isubn(num);
+-};
++      //Find opposite edge
++      var x = star[j-1], y = -1
++      for(var k=1; k<star.length; k+=2) {
++        if(star[k-1] === b) {
++          y = star[k]
++          break
++        }
++      }
+ 
+-BN.prototype.iabs = function iabs() {
+-  this.sign = false;
++      //If this is a boundary edge, don't flip it
++      if(y < 0) {
++        continue
++      }
+ 
+-  return this;
+-};
++      //If edge is in circle, flip it
++      if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
++        stack.push(a, b)
++      }
++    }
++  }
+ 
+-BN.prototype.abs = function abs() {
+-  return this.clone().iabs();
+-};
++  while(stack.length > 0) {
++    var b = stack.pop()
++    var a = stack.pop()
+ 
+-BN.prototype._ishlnsubmul = function _ishlnsubmul(num, mul, shift) {
+-  // Bigger storage is needed
+-  var len = num.length + shift;
+-  var i;
+-  if (this.words.length < len) {
+-    var t = new Array(len);
+-    for (var i = 0; i < this.length; i++)
+-      t[i] = this.words[i];
+-    this.words = t;
+-  } else {
+-    i = this.length;
+-  }
++    //Find opposite pairs
++    var x = -1, y = -1
++    var star = stars[a]
++    for(var i=1; i<star.length; i+=2) {
++      var s = star[i-1]
++      var t = star[i]
++      if(s === b) {
++        y = t
++      } else if(t === b) {
++        x = s
++      }
++    }
+ 
+-  // Zeroify rest
+-  this.length = Math.max(this.length, len);
+-  for (; i < this.length; i++)
+-    this.words[i] = 0;
++    //If x/y are both valid then skip edge
++    if(x < 0 || y < 0) {
++      continue
++    }
+ 
+-  var carry = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var w = this.words[i + shift] + carry;
+-    var right = num.words[i] * mul;
+-    w -= right & 0x3ffffff;
+-    carry = (w >> 26) - ((right / 0x4000000) | 0);
+-    this.words[i + shift] = w & 0x3ffffff;
+-  }
+-  for (; i < this.length - shift; i++) {
+-    var w = this.words[i + shift] + carry;
+-    carry = w >> 26;
+-    this.words[i + shift] = w & 0x3ffffff;
+-  }
++    //If edge is now delaunay, then don't flip it
++    if(inCircle(points[a], points[b], points[x], points[y]) >= 0) {
++      continue
++    }
+ 
+-  if (carry === 0)
+-    return this.strip();
++    //Flip the edge
++    triangulation.flip(a, b)
+ 
+-  // Subtraction overflow
+-  assert(carry === -1);
+-  carry = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var w = -this.words[i] + carry;
+-    carry = w >> 26;
+-    this.words[i] = w & 0x3ffffff;
++    //Test flipping neighboring edges
++    testFlip(points, triangulation, stack, x, a, y)
++    testFlip(points, triangulation, stack, a, y, x)
++    testFlip(points, triangulation, stack, y, b, x)
++    testFlip(points, triangulation, stack, b, x, y)
+   }
+-  this.sign = true;
++}
+ 
+-  return this.strip();
+-};
++},{"binary-search-bounds":53,"robust-in-sphere":217}],50:[function(require,module,exports){
++'use strict'
+ 
+-BN.prototype._wordDiv = function _wordDiv(num, mode) {
+-  var shift = this.length - num.length;
++var bsearch = require('binary-search-bounds')
+ 
+-  var a = this.clone();
+-  var b = num;
++module.exports = classifyFaces
+ 
+-  // Normalize
+-  var bhi = b.words[b.length - 1];
+-  var bhiBits = this._countBits(bhi);
+-  shift = 26 - bhiBits;
+-  if (shift !== 0) {
+-    b = b.shln(shift);
+-    a.ishln(shift);
+-    bhi = b.words[b.length - 1];
+-  }
++function FaceIndex(cells, neighbor, constraint, flags, active, next, boundary) {
++  this.cells       = cells
++  this.neighbor    = neighbor
++  this.flags       = flags
++  this.constraint  = constraint
++  this.active      = active
++  this.next        = next
++  this.boundary    = boundary
++}
+ 
+-  // Initialize quotient
+-  var m = a.length - b.length;
+-  var q;
++var proto = FaceIndex.prototype
+ 
+-  if (mode !== 'mod') {
+-    q = new BN(null);
+-    q.length = m + 1;
+-    q.words = new Array(q.length);
+-    for (var i = 0; i < q.length; i++)
+-      q.words[i] = 0;
+-  }
++function compareCell(a, b) {
++  return a[0] - b[0] ||
++         a[1] - b[1] ||
++         a[2] - b[2]
++}
+ 
+-  var diff = a.clone()._ishlnsubmul(b, 1, m);
+-  if (!diff.sign) {
+-    a = diff;
+-    if (q)
+-      q.words[m] = 1;
++proto.locate = (function() {
++  var key = [0,0,0]
++  return function(a, b, c) {
++    var x = a, y = b, z = c
++    if(b < c) {
++      if(b < a) {
++        x = b
++        y = c
++        z = a
++      }
++    } else if(c < a) {
++      x = c
++      y = a
++      z = b
++    }
++    if(x < 0) {
++      return -1
++    }
++    key[0] = x
++    key[1] = y
++    key[2] = z
++    return bsearch.eq(this.cells, key, compareCell)
+   }
++})()
+ 
+-  for (var j = m - 1; j >= 0; j--) {
+-    var qj = a.words[b.length + j] * 0x4000000 + a.words[b.length + j - 1];
++function indexCells(triangulation, infinity) {
++  //First get cells and canonicalize
++  var cells = triangulation.cells()
++  var nc = cells.length
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    var x = c[0], y = c[1], z = c[2]
++    if(y < z) {
++      if(y < x) {
++        c[0] = y
++        c[1] = z
++        c[2] = x
++      }
++    } else if(z < x) {
++      c[0] = z
++      c[1] = x
++      c[2] = y
++    }
++  }
++  cells.sort(compareCell)
+ 
+-    // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
+-    // (0x7ffffff)
+-    qj = Math.min((qj / bhi) | 0, 0x3ffffff);
++  //Initialize flag array
++  var flags = new Array(nc)
++  for(var i=0; i<flags.length; ++i) {
++    flags[i] = 0
++  }
+ 
+-    a._ishlnsubmul(b, qj, j);
+-    while (a.sign) {
+-      qj--;
+-      a.sign = false;
+-      a._ishlnsubmul(b, 1, j);
+-      if (a.cmpn(0) !== 0)
+-        a.sign = !a.sign;
++  //Build neighbor index, initialize queues
++  var active = []
++  var next   = []
++  var neighbor = new Array(3*nc)
++  var constraint = new Array(3*nc)
++  var boundary = null
++  if(infinity) {
++    boundary = []
++  }
++  var index = new FaceIndex(
++    cells,
++    neighbor,
++    constraint,
++    flags,
++    active,
++    next,
++    boundary)
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    for(var j=0; j<3; ++j) {
++      var x = c[j], y = c[(j+1)%3]
++      var a = neighbor[3*i+j] = index.locate(y, x, triangulation.opposite(y, x))
++      var b = constraint[3*i+j] = triangulation.isConstraint(x, y)
++      if(a < 0) {
++        if(b) {
++          next.push(i)
++        } else {
++          active.push(i)
++          flags[i] = 1
++        }
++        if(infinity) {
++          boundary.push([y, x, -1])
++        }
++      }
+     }
+-    if (q)
+-      q.words[j] = qj;
+   }
+-  if (q)
+-    q.strip();
+-  a.strip();
++  return index
++}
+ 
+-  // Denormalize
+-  if (mode !== 'div' && shift !== 0)
+-    a.ishrn(shift);
+-  return { div: q ? q : null, mod: a };
+-};
++function filterCells(cells, flags, target) {
++  var ptr = 0
++  for(var i=0; i<cells.length; ++i) {
++    if(flags[i] === target) {
++      cells[ptr++] = cells[i]
++    }
++  }
++  cells.length = ptr
++  return cells
++}
+ 
+-BN.prototype.divmod = function divmod(num, mode) {
+-  assert(num.cmpn(0) !== 0);
++function classifyFaces(triangulation, target, infinity) {
++  var index = indexCells(triangulation, infinity)
+ 
+-  if (this.sign && !num.sign) {
+-    var res = this.neg().divmod(num, mode);
+-    var div;
+-    var mod;
+-    if (mode !== 'mod')
+-      div = res.div.neg();
+-    if (mode !== 'div')
+-      mod = res.mod.cmpn(0) === 0 ? res.mod : num.sub(res.mod);
+-    return {
+-      div: div,
+-      mod: mod
+-    };
+-  } else if (!this.sign && num.sign) {
+-    var res = this.divmod(num.neg(), mode);
+-    var div;
+-    if (mode !== 'mod')
+-      div = res.div.neg();
+-    return { div: div, mod: res.mod };
+-  } else if (this.sign && num.sign) {
+-    return this.neg().divmod(num.neg(), mode);
++  if(target === 0) {
++    if(infinity) {
++      return index.cells.concat(index.boundary)
++    } else {
++      return index.cells
++    }
+   }
+ 
+-  // Both numbers are positive at this point
++  var side = 1
++  var active = index.active
++  var next = index.next
++  var flags = index.flags
++  var cells = index.cells
++  var constraint = index.constraint
++  var neighbor = index.neighbor
+ 
+-  // Strip both numbers to approximate shift value
+-  if (num.length > this.length || this.cmp(num) < 0)
+-    return { div: new BN(0), mod: this };
++  while(active.length > 0 || next.length > 0) {
++    while(active.length > 0) {
++      var t = active.pop()
++      if(flags[t] === -side) {
++        continue
++      }
++      flags[t] = side
++      var c = cells[t]
++      for(var j=0; j<3; ++j) {
++        var f = neighbor[3*t+j]
++        if(f >= 0 && flags[f] === 0) {
++          if(constraint[3*t+j]) {
++            next.push(f)
++          } else {
++            active.push(f)
++            flags[f] = side
++          }
++        }
++      }
++    }
+ 
+-  // Very short reduction
+-  if (num.length === 1) {
+-    if (mode === 'div')
+-      return { div: this.divn(num.words[0]), mod: null };
+-    else if (mode === 'mod')
+-      return { div: null, mod: new BN(this.modn(num.words[0])) };
+-    return {
+-      div: this.divn(num.words[0]),
+-      mod: new BN(this.modn(num.words[0]))
+-    };
++    //Swap arrays and loop
++    var tmp = next
++    next = active
++    active = tmp
++    next.length = 0
++    side = -side
+   }
+ 
+-  return this._wordDiv(num, mode);
+-};
+-
+-// Find `this` / `num`
+-BN.prototype.div = function div(num) {
+-  return this.divmod(num, 'div').div;
+-};
+-
+-// Find `this` % `num`
+-BN.prototype.mod = function mod(num) {
+-  return this.divmod(num, 'mod').mod;
+-};
++  var result = filterCells(cells, flags, target)
++  if(infinity) {
++    return result.concat(index.boundary)
++  }
++  return result
++}
+ 
+-// Find Round(`this` / `num`)
+-BN.prototype.divRound = function divRound(num) {
+-  var dm = this.divmod(num);
++},{"binary-search-bounds":53}],51:[function(require,module,exports){
++'use strict'
+ 
+-  // Fast case - exact division
+-  if (dm.mod.cmpn(0) === 0)
+-    return dm.div;
++var bsearch = require('binary-search-bounds')
++var orient = require('robust-orientation')[3]
+ 
+-  var mod = dm.div.sign ? dm.mod.isub(num) : dm.mod;
++var EVENT_POINT = 0
++var EVENT_END   = 1
++var EVENT_START = 2
+ 
+-  var half = num.shrn(1);
+-  var r2 = num.andln(1);
+-  var cmp = mod.cmp(half);
++module.exports = monotoneTriangulate
+ 
+-  // Round down
+-  if (cmp < 0 || r2 === 1 && cmp === 0)
+-    return dm.div;
++//A partial convex hull fragment, made of two unimonotone polygons
++function PartialHull(a, b, idx, lowerIds, upperIds) {
++  this.a = a
++  this.b = b
++  this.idx = idx
++  this.lowerIds = lowerIds
++  this.upperIds = upperIds
++}
+ 
+-  // Round up
+-  return dm.div.sign ? dm.div.isubn(1) : dm.div.iaddn(1);
+-};
++//An event in the sweep line procedure
++function Event(a, b, type, idx) {
++  this.a    = a
++  this.b    = b
++  this.type = type
++  this.idx  = idx
++}
+ 
+-BN.prototype.modn = function modn(num) {
+-  assert(num <= 0x3ffffff);
+-  var p = (1 << 26) % num;
++//This is used to compare events for the sweep line procedure
++// Points are:
++//  1. sorted lexicographically
++//  2. sorted by type  (point < end < start)
++//  3. segments sorted by winding order
++//  4. sorted by index
++function compareEvent(a, b) {
++  var d =
++    (a.a[0] - b.a[0]) ||
++    (a.a[1] - b.a[1]) ||
++    (a.type - b.type)
++  if(d) { return d }
++  if(a.type !== EVENT_POINT) {
++    d = orient(a.a, a.b, b.b)
++    if(d) { return d }
++  }
++  return a.idx - b.idx
++}
+ 
+-  var acc = 0;
+-  for (var i = this.length - 1; i >= 0; i--)
+-    acc = (p * acc + this.words[i]) % num;
++function testPoint(hull, p) {
++  return orient(hull.a, hull.b, p)
++}
+ 
+-  return acc;
+-};
++function addPoint(cells, hulls, points, p, idx) {
++  var lo = bsearch.lt(hulls, p, testPoint)
++  var hi = bsearch.gt(hulls, p, testPoint)
++  for(var i=lo; i<hi; ++i) {
++    var hull = hulls[i]
+ 
+-// In-place division by number
+-BN.prototype.idivn = function idivn(num) {
+-  assert(num <= 0x3ffffff);
++    //Insert p into lower hull
++    var lowerIds = hull.lowerIds
++    var m = lowerIds.length
++    while(m > 1 && orient(
++        points[lowerIds[m-2]],
++        points[lowerIds[m-1]],
++        p) > 0) {
++      cells.push(
++        [lowerIds[m-1],
++         lowerIds[m-2],
++         idx])
++      m -= 1
++    }
++    lowerIds.length = m
++    lowerIds.push(idx)
+ 
+-  var carry = 0;
+-  for (var i = this.length - 1; i >= 0; i--) {
+-    var w = this.words[i] + carry * 0x4000000;
+-    this.words[i] = (w / num) | 0;
+-    carry = w % num;
++    //Insert p into upper hull
++    var upperIds = hull.upperIds
++    var m = upperIds.length
++    while(m > 1 && orient(
++        points[upperIds[m-2]],
++        points[upperIds[m-1]],
++        p) < 0) {
++      cells.push(
++        [upperIds[m-2],
++         upperIds[m-1],
++         idx])
++      m -= 1
++    }
++    upperIds.length = m
++    upperIds.push(idx)
+   }
++}
+ 
+-  return this.strip();
+-};
++function findSplit(hull, edge) {
++  var d
++  if(hull.a[0] < edge.a[0]) {
++    d = orient(hull.a, hull.b, edge.a)
++  } else {
++    d = orient(edge.b, edge.a, hull.a)
++  }
++  if(d) { return d }
++  if(edge.b[0] < hull.b[0]) {
++    d = orient(hull.a, hull.b, edge.b)
++  } else {
++    d = orient(edge.b, edge.a, hull.b)
++  }
++  return d || hull.idx - edge.idx
++}
+ 
+-BN.prototype.divn = function divn(num) {
+-  return this.clone().idivn(num);
+-};
++function splitHulls(hulls, points, event) {
++  var splitIdx = bsearch.le(hulls, event, findSplit)
++  var hull = hulls[splitIdx]
++  var upperIds = hull.upperIds
++  var x = upperIds[upperIds.length-1]
++  hull.upperIds = [x]
++  hulls.splice(splitIdx+1, 0,
++    new PartialHull(event.a, event.b, event.idx, [x], upperIds))
++}
+ 
+-BN.prototype.egcd = function egcd(p) {
+-  assert(!p.sign);
+-  assert(p.cmpn(0) !== 0);
+ 
+-  var x = this;
+-  var y = p.clone();
++function mergeHulls(hulls, points, event) {
++  //Swap pointers for merge search
++  var tmp = event.a
++  event.a = event.b
++  event.b = tmp
++  var mergeIdx = bsearch.eq(hulls, event, findSplit)
++  var upper = hulls[mergeIdx]
++  var lower = hulls[mergeIdx-1]
++  lower.upperIds = upper.upperIds
++  hulls.splice(mergeIdx, 1)
++}
+ 
+-  if (x.sign)
+-    x = x.mod(p);
+-  else
+-    x = x.clone();
+ 
+-  // A * x + B * y = x
+-  var A = new BN(1);
+-  var B = new BN(0);
++function monotoneTriangulate(points, edges) {
+ 
+-  // C * x + D * y = y
+-  var C = new BN(0);
+-  var D = new BN(1);
++  var numPoints = points.length
++  var numEdges = edges.length
+ 
+-  var g = 0;
++  var events = []
+ 
+-  while (x.isEven() && y.isEven()) {
+-    x.ishrn(1);
+-    y.ishrn(1);
+-    ++g;
++  //Create point events
++  for(var i=0; i<numPoints; ++i) {
++    events.push(new Event(
++      points[i],
++      null,
++      EVENT_POINT,
++      i))
+   }
+ 
+-  var yp = y.clone();
+-  var xp = x.clone();
+-
+-  while (x.cmpn(0) !== 0) {
+-    while (x.isEven()) {
+-      x.ishrn(1);
+-      if (A.isEven() && B.isEven()) {
+-        A.ishrn(1);
+-        B.ishrn(1);
+-      } else {
+-        A.iadd(yp).ishrn(1);
+-        B.isub(xp).ishrn(1);
+-      }
++  //Create edge events
++  for(var i=0; i<numEdges; ++i) {
++    var e = edges[i]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    if(a[0] < b[0]) {
++      events.push(
++        new Event(a, b, EVENT_START, i),
++        new Event(b, a, EVENT_END, i))
++    } else if(a[0] > b[0]) {
++      events.push(
++        new Event(b, a, EVENT_START, i),
++        new Event(a, b, EVENT_END, i))
+     }
++  }
+ 
+-    while (y.isEven()) {
+-      y.ishrn(1);
+-      if (C.isEven() && D.isEven()) {
+-        C.ishrn(1);
+-        D.ishrn(1);
+-      } else {
+-        C.iadd(yp).ishrn(1);
+-        D.isub(xp).ishrn(1);
+-      }
+-    }
++  //Sort events
++  events.sort(compareEvent)
+ 
+-    if (x.cmp(y) >= 0) {
+-      x.isub(y);
+-      A.isub(C);
+-      B.isub(D);
++  //Initialize hull
++  var minX = events[0].a[0] - (1 + Math.abs(events[0].a[0])) * Math.pow(2, -52)
++  var hull = [ new PartialHull([minX, 1], [minX, 0], -1, [], [], [], []) ]
++
++  //Process events in order
++  var cells = []
++  for(var i=0, numEvents=events.length; i<numEvents; ++i) {
++    var event = events[i]
++    var type = event.type
++    if(type === EVENT_POINT) {
++      addPoint(cells, hull, points, event.a, event.idx)
++    } else if(type === EVENT_START) {
++      splitHulls(hull, points, event)
+     } else {
+-      y.isub(x);
+-      C.isub(A);
+-      D.isub(B);
++      mergeHulls(hull, points, event)
+     }
+   }
+ 
+-  return {
+-    a: C,
+-    b: D,
+-    gcd: y.ishln(g)
+-  };
+-};
++  //Return triangulation
++  return cells
++}
+ 
+-// This is reduced incarnation of the binary EEA
+-// above, designated to invert members of the
+-// _prime_ fields F(p) at a maximal speed
+-BN.prototype._invmp = function _invmp(p) {
+-  assert(!p.sign);
+-  assert(p.cmpn(0) !== 0);
++},{"binary-search-bounds":53,"robust-orientation":219}],52:[function(require,module,exports){
++'use strict'
+ 
+-  var a = this;
+-  var b = p.clone();
++var bsearch = require('binary-search-bounds')
+ 
+-  if (a.sign)
+-    a = a.mod(p);
+-  else
+-    a = a.clone();
++module.exports = createTriangulation
+ 
+-  var x1 = new BN(1);
+-  var x2 = new BN(0);
++function Triangulation(stars, edges) {
++  this.stars = stars
++  this.edges = edges
++}
+ 
+-  var delta = b.clone();
++var proto = Triangulation.prototype
+ 
+-  while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
+-    while (a.isEven()) {
+-      a.ishrn(1);
+-      if (x1.isEven())
+-        x1.ishrn(1);
+-      else
+-        x1.iadd(delta).ishrn(1);
+-    }
+-    while (b.isEven()) {
+-      b.ishrn(1);
+-      if (x2.isEven())
+-        x2.ishrn(1);
+-      else
+-        x2.iadd(delta).ishrn(1);
+-    }
+-    if (a.cmp(b) >= 0) {
+-      a.isub(b);
+-      x1.isub(x2);
+-    } else {
+-      b.isub(a);
+-      x2.isub(x1);
++function removePair(list, j, k) {
++  for(var i=1, n=list.length; i<n; i+=2) {
++    if(list[i-1] === j && list[i] === k) {
++      list[i-1] = list[n-2]
++      list[i] = list[n-1]
++      list.length = n - 2
++      return
+     }
+   }
+-  if (a.cmpn(1) === 0)
+-    return x1;
+-  else
+-    return x2;
+-};
++}
+ 
+-BN.prototype.gcd = function gcd(num) {
+-  if (this.cmpn(0) === 0)
+-    return num.clone();
+-  if (num.cmpn(0) === 0)
+-    return this.clone();
++proto.isConstraint = (function() {
++  var e = [0,0]
++  function compareLex(a, b) {
++    return a[0] - b[0] || a[1] - b[1]
++  }
++  return function(i, j) {
++    e[0] = Math.min(i,j)
++    e[1] = Math.max(i,j)
++    return bsearch.eq(this.edges, e, compareLex) >= 0
++  }
++})()
+ 
+-  var a = this.clone();
+-  var b = num.clone();
+-  a.sign = false;
+-  b.sign = false;
++proto.removeTriangle = function(i, j, k) {
++  var stars = this.stars
++  removePair(stars[i], j, k)
++  removePair(stars[j], k, i)
++  removePair(stars[k], i, j)
++}
+ 
+-  // Remove common factor of two
+-  for (var shift = 0; a.isEven() && b.isEven(); shift++) {
+-    a.ishrn(1);
+-    b.ishrn(1);
++proto.addTriangle = function(i, j, k) {
++  var stars = this.stars
++  stars[i].push(j, k)
++  stars[j].push(k, i)
++  stars[k].push(i, j)
++}
++
++proto.opposite = function(j, i) {
++  var list = this.stars[i]
++  for(var k=1, n=list.length; k<n; k+=2) {
++    if(list[k] === j) {
++      return list[k-1]
++    }
+   }
++  return -1
++}
+ 
+-  do {
+-    while (a.isEven())
+-      a.ishrn(1);
+-    while (b.isEven())
+-      b.ishrn(1);
++proto.flip = function(i, j) {
++  var a = this.opposite(i, j)
++  var b = this.opposite(j, i)
++  this.removeTriangle(i, j, a)
++  this.removeTriangle(j, i, b)
++  this.addTriangle(i, b, a)
++  this.addTriangle(j, a, b)
++}
+ 
+-    var r = a.cmp(b);
+-    if (r < 0) {
+-      // Swap `a` and `b` to make `a` always bigger than `b`
+-      var t = a;
+-      a = b;
+-      b = t;
+-    } else if (r === 0 || b.cmpn(1) === 0) {
+-      break;
++proto.edges = function() {
++  var stars = this.stars
++  var result = []
++  for(var i=0, n=stars.length; i<n; ++i) {
++    var list = stars[i]
++    for(var j=0, m=list.length; j<m; j+=2) {
++      result.push([list[j], list[j+1]])
+     }
++  }
++  return result
++}
+ 
+-    a.isub(b);
+-  } while (true);
++proto.cells = function() {
++  var stars = this.stars
++  var result = []
++  for(var i=0, n=stars.length; i<n; ++i) {
++    var list = stars[i]
++    for(var j=0, m=list.length; j<m; j+=2) {
++      var s = list[j]
++      var t = list[j+1]
++      if(i < Math.min(s, t)) {
++        result.push([i, s, t])
++      }
++    }
++  }
++  return result
++}
+ 
+-  return b.ishln(shift);
+-};
++function createTriangulation(numVerts, edges) {
++  var stars = new Array(numVerts)
++  for(var i=0; i<numVerts; ++i) {
++    stars[i] = []
++  }
++  return new Triangulation(stars, edges)
++}
+ 
+-// Invert number in the field F(num)
+-BN.prototype.invm = function invm(num) {
+-  return this.egcd(num).a.mod(num);
+-};
++},{"binary-search-bounds":53}],53:[function(require,module,exports){
++"use strict"
+ 
+-BN.prototype.isEven = function isEven() {
+-  return (this.words[0] & 1) === 0;
+-};
++function compileSearch(funcName, predicate, reversed, extraArgs, earlyOut) {
++  var code = [
++    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
++earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
++";while(l<=h){\
++var m=(l+h)>>>1,x=a[m]"]
++  if(earlyOut) {
++    if(predicate.indexOf("c") < 0) {
++      code.push(";if(x===y){return m}else if(x<=y){")
++    } else {
++      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
++    }
++  } else {
++    code.push(";if(", predicate, "){i=m;")
++  }
++  if(reversed) {
++    code.push("l=m+1}else{h=m-1}")
++  } else {
++    code.push("h=m-1}else{l=m+1}")
++  }
++  code.push("}")
++  if(earlyOut) {
++    code.push("return -1};")
++  } else {
++    code.push("return i};")
++  }
++  return code.join("")
++}
+ 
+-BN.prototype.isOdd = function isOdd() {
+-  return (this.words[0] & 1) === 1;
+-};
++function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
++  var result = new Function([
++  compileSearch("A", "x" + predicate + "y", reversed, ["y"], earlyOut),
++  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], earlyOut),
++"function dispatchBsearch", suffix, "(a,y,c,l,h){\
++if(typeof(c)==='function'){\
++return P(a,(l===void 0)?0:l|0,(h===void 0)?a.length-1:h|0,y,c)\
++}else{\
++return A(a,(c===void 0)?0:c|0,(l===void 0)?a.length-1:l|0,y)\
++}}\
++return dispatchBsearch", suffix].join(""))
++  return result()
++}
+ 
+-// And first word and num
+-BN.prototype.andln = function andln(num) {
+-  return this.words[0] & num;
+-};
++module.exports = {
++  ge: compileBoundsSearch(">=", false, "GE"),
++  gt: compileBoundsSearch(">", false, "GT"),
++  lt: compileBoundsSearch("<", true, "LT"),
++  le: compileBoundsSearch("<=", true, "LE"),
++  eq: compileBoundsSearch("-", true, "EQ", true)
++}
+ 
+-// Increment at the bit position in-line
+-BN.prototype.bincn = function bincn(bit) {
+-  assert(typeof bit === 'number');
+-  var r = bit % 26;
+-  var s = (bit - r) / 26;
+-  var q = 1 << r;
++},{}],54:[function(require,module,exports){
++'use strict'
+ 
+-  // Fast case: bit is much higher than all existing words
+-  if (this.length <= s) {
+-    for (var i = this.length; i < s + 1; i++)
+-      this.words[i] = 0;
+-    this.words[s] |= q;
+-    this.length = s + 1;
+-    return this;
+-  }
++module.exports = orientation
+ 
+-  // Add bit and propagate, if needed
+-  var carry = q;
+-  for (var i = s; carry !== 0 && i < this.length; i++) {
+-    var w = this.words[i];
+-    w += carry;
+-    carry = w >>> 26;
+-    w &= 0x3ffffff;
+-    this.words[i] = w;
+-  }
+-  if (carry !== 0) {
+-    this.words[i] = carry;
+-    this.length++;
++function orientation(s) {
++  var p = 1
++  for(var i=1; i<s.length; ++i) {
++    for(var j=0; j<i; ++j) {
++      if(s[i] < s[j]) {
++        p = -p
++      } else if(s[j] === s[i]) {
++        return 0
++      }
++    }
+   }
+-  return this;
+-};
+-
+-BN.prototype.cmpn = function cmpn(num) {
+-  var sign = num < 0;
+-  if (sign)
+-    num = -num;
++  return p
++}
+ 
+-  if (this.sign && !sign)
+-    return -1;
+-  else if (!this.sign && sign)
+-    return 1;
++},{}],55:[function(require,module,exports){
++"use strict"
+ 
+-  num &= 0x3ffffff;
+-  this.strip();
++var dup = require("dup")
++var solve = require("robust-linear-solve")
+ 
+-  var res;
+-  if (this.length > 1) {
+-    res = 1;
+-  } else {
+-    var w = this.words[0];
+-    res = w === num ? 0 : w < num ? -1 : 1;
++function dot(a, b) {
++  var s = 0.0
++  var d = a.length
++  for(var i=0; i<d; ++i) {
++    s += a[i] * b[i]
+   }
+-  if (this.sign)
+-    res = -res;
+-  return res;
+-};
++  return s
++}
+ 
+-// Compare two numbers and return:
+-// 1 - if `this` > `num`
+-// 0 - if `this` == `num`
+-// -1 - if `this` < `num`
+-BN.prototype.cmp = function cmp(num) {
+-  if (this.sign && !num.sign)
+-    return -1;
+-  else if (!this.sign && num.sign)
+-    return 1;
++function barycentricCircumcenter(points) {
++  var N = points.length
++  if(N === 0) {
++    return []
++  }
++  
++  var D = points[0].length
++  var A = dup([points.length+1, points.length+1], 1.0)
++  var b = dup([points.length+1], 1.0)
++  A[N][N] = 0.0
++  for(var i=0; i<N; ++i) {
++    for(var j=0; j<=i; ++j) {
++      A[j][i] = A[i][j] = 2.0 * dot(points[i], points[j])
++    }
++    b[i] = dot(points[i], points[i])
++  }
++  var x = solve(A, b)
+ 
+-  var res = this.ucmp(num);
+-  if (this.sign)
+-    return -res;
+-  else
+-    return res;
+-};
++  var denom = 0.0
++  var h = x[N+1]
++  for(var i=0; i<h.length; ++i) {
++    denom += h[i]
++  }
+ 
+-// Unsigned comparison
+-BN.prototype.ucmp = function ucmp(num) {
+-  // At this point both numbers have the same sign
+-  if (this.length > num.length)
+-    return 1;
+-  else if (this.length < num.length)
+-    return -1;
++  var y = new Array(N)
++  for(var i=0; i<N; ++i) {
++    var h = x[i]
++    var numer = 0.0
++    for(var j=0; j<h.length; ++j) {
++      numer += h[j]
++    }
++    y[i] =  numer / denom
++  }
+ 
+-  var res = 0;
+-  for (var i = this.length - 1; i >= 0; i--) {
+-    var a = this.words[i];
+-    var b = num.words[i];
++  return y
++}
+ 
+-    if (a === b)
+-      continue;
+-    if (a < b)
+-      res = -1;
+-    else if (a > b)
+-      res = 1;
+-    break;
++function circumcenter(points) {
++  if(points.length === 0) {
++    return []
+   }
+-  return res;
+-};
+-
+-//
+-// A reduce context, could be using montgomery or something better, depending
+-// on the `m` itself.
+-//
+-BN.red = function red(num) {
+-  return new Red(num);
+-};
++  var D = points[0].length
++  var result = dup([D])
++  var weights = barycentricCircumcenter(points)
++  for(var i=0; i<points.length; ++i) {
++    for(var j=0; j<D; ++j) {
++      result[j] += points[i][j] * weights[i]
++    }
++  }
++  return result
++}
+ 
+-BN.prototype.toRed = function toRed(ctx) {
+-  assert(!this.red, 'Already a number in reduction context');
+-  assert(!this.sign, 'red works only with positives');
+-  return ctx.convertTo(this)._forceRed(ctx);
+-};
++circumcenter.barycenetric = barycentricCircumcenter
++module.exports = circumcenter
++},{"dup":77,"robust-linear-solve":218}],56:[function(require,module,exports){
++module.exports = circumradius
+ 
+-BN.prototype.fromRed = function fromRed() {
+-  assert(this.red, 'fromRed works only with numbers in reduction context');
+-  return this.red.convertFrom(this);
+-};
++var circumcenter = require('circumcenter')
+ 
+-BN.prototype._forceRed = function _forceRed(ctx) {
+-  this.red = ctx;
+-  return this;
+-};
++function circumradius(points) {
++  var center = circumcenter(points)
++  var avgDist = 0.0
++  for(var i=0; i<points.length; ++i) {
++    var p = points[i]
++    for(var j=0; j<center.length; ++j) {
++      avgDist += Math.pow(p[j] - center[j], 2)
++    }
++  }
++  return Math.sqrt(avgDist / points.length)
++}
++},{"circumcenter":55}],57:[function(require,module,exports){
++'use strict'
+ 
+-BN.prototype.forceRed = function forceRed(ctx) {
+-  assert(!this.red, 'Already a number in reduction context');
+-  return this._forceRed(ctx);
+-};
++module.exports = cleanPSLG
+ 
+-BN.prototype.redAdd = function redAdd(num) {
+-  assert(this.red, 'redAdd works only with red numbers');
+-  return this.red.add(this, num);
+-};
++var UnionFind = require('union-find')
++var boxIntersect = require('box-intersect')
++var compareCell = require('compare-cell')
++var segseg = require('robust-segment-intersect')
++var rat = require('big-rat')
++var ratCmp = require('big-rat/cmp')
++var ratToFloat = require('big-rat/to-float')
++var ratVec = require('rat-vec')
++var nextafter = require('nextafter')
+ 
+-BN.prototype.redIAdd = function redIAdd(num) {
+-  assert(this.red, 'redIAdd works only with red numbers');
+-  return this.red.iadd(this, num);
+-};
++var solveIntersection = require('./lib/rat-seg-intersect')
+ 
+-BN.prototype.redSub = function redSub(num) {
+-  assert(this.red, 'redSub works only with red numbers');
+-  return this.red.sub(this, num);
+-};
++//Bounds on a rational number when rounded to a float
++function boundRat(r) {
++  var f = ratToFloat(r)
++  var cmp = ratCmp(rat(f), r)
++  if(cmp < 0) {
++    return [f, nextafter(f, Infinity)]
++  } else if(cmp > 0) {
++    return [nextafter(f, -Infinity), f]
++  } else {
++    return [f, f]
++  }
++}
+ 
+-BN.prototype.redISub = function redISub(num) {
+-  assert(this.red, 'redISub works only with red numbers');
+-  return this.red.isub(this, num);
+-};
++//Convert a list of edges in a pslg to bounding boxes
++function boundEdges(points, edges) {
++  var bounds = new Array(edges.length)
++  for(var i=0; i<edges.length; ++i) {
++    var e = edges[i]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    bounds[i] = [
++      Math.min(a[0], b[0]),
++      Math.min(a[1], b[1]),
++      Math.max(a[0], b[0]),
++      Math.max(a[1], b[1]) ]
++  }
++  return bounds
++}
+ 
+-BN.prototype.redShl = function redShl(num) {
+-  assert(this.red, 'redShl works only with red numbers');
+-  return this.red.shl(this, num);
+-};
++//Convert a list of points into bounding boxes by duplicating coords
++function boundPoints(points) {
++  var bounds = new Array(points.length)
++  for(var i=0; i<points.length; ++i) {
++    var p = points[i]
++    bounds[i] = [ p[0], p[1], p[0], p[1] ]
++  }
++  return bounds
++}
+ 
+-BN.prototype.redMul = function redMul(num) {
+-  assert(this.red, 'redMul works only with red numbers');
+-  this.red._verify2(this, num);
+-  return this.red.mul(this, num);
+-};
++//Find all pairs of crossing edges in a pslg (given edge bounds)
++function getCrossings(points, edges, edgeBounds) {
++  var result = []
++  boxIntersect(edgeBounds, function(i, j) {
++    var e = edges[i]
++    var f = edges[j]
++    if(e[0] === f[0] || e[0] === f[1] ||
++       e[1] === f[0] || e[1] === f[1]) {
++         return
++    }
++    var a = points[e[0]]
++    var b = points[e[1]]
++    var c = points[f[0]]
++    var d = points[f[1]]
++    if(segseg(a, b, c, d)) {
++      result.push([i, j])
++    }
++  })
++  return result
++}
+ 
+-BN.prototype.redIMul = function redIMul(num) {
+-  assert(this.red, 'redMul works only with red numbers');
+-  this.red._verify2(this, num);
+-  return this.red.imul(this, num);
+-};
++//Find all pairs of crossing vertices in a pslg (given edge/vert bounds)
++function getTJunctions(points, edges, edgeBounds, vertBounds) {
++  var result = []
++  boxIntersect(edgeBounds, vertBounds, function(i, v) {
++    var e = edges[i]
++    if(e[0] === v || e[1] === v) {
++      return
++    }
++    var p = points[v]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    if(segseg(a, b, p, p)) {
++      result.push([i, v])
++    }
++  })
++  return result
++}
+ 
+-BN.prototype.redSqr = function redSqr() {
+-  assert(this.red, 'redSqr works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.sqr(this);
+-};
+ 
+-BN.prototype.redISqr = function redISqr() {
+-  assert(this.red, 'redISqr works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.isqr(this);
+-};
++//Cut edges along crossings/tjunctions
++function cutEdges(floatPoints, edges, crossings, junctions, useColor) {
+ 
+-// Square root over p
+-BN.prototype.redSqrt = function redSqrt() {
+-  assert(this.red, 'redSqrt works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.sqrt(this);
+-};
+-
+-BN.prototype.redInvm = function redInvm() {
+-  assert(this.red, 'redInvm works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.invm(this);
+-};
+-
+-// Return negative clone of `this` % `red modulo`
+-BN.prototype.redNeg = function redNeg() {
+-  assert(this.red, 'redNeg works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.neg(this);
+-};
++  //Convert crossings into tjunctions by constructing rational points
++  var ratPoints = []
++  for(var i=0; i<crossings.length; ++i) {
++    var crossing = crossings[i]
++    var e = crossing[0]
++    var f = crossing[1]
++    var ee = edges[e]
++    var ef = edges[f]
++    var x = solveIntersection(
++      ratVec(floatPoints[ee[0]]),
++      ratVec(floatPoints[ee[1]]),
++      ratVec(floatPoints[ef[0]]),
++      ratVec(floatPoints[ef[1]]))
++    if(!x) {
++      //Segments are parallel, should already be handled by t-junctions
++      continue
++    }
++    var idx = ratPoints.length + floatPoints.length
++    ratPoints.push(x)
++    junctions.push([e, idx], [f, idx])
++  }
+ 
+-BN.prototype.redPow = function redPow(num) {
+-  assert(this.red && !num.red, 'redPow(normalNum)');
+-  this.red._verify1(this);
+-  return this.red.pow(this, num);
+-};
++  //Sort tjunctions
++  function getPoint(idx) {
++    if(idx >= floatPoints.length) {
++      return ratPoints[idx-floatPoints.length]
++    }
++    var p = floatPoints[idx]
++    return [ rat(p[0]), rat(p[1]) ]
++  }
++  junctions.sort(function(a, b) {
++    if(a[0] !== b[0]) {
++      return a[0] - b[0]
++    }
++    var u = getPoint(a[1])
++    var v = getPoint(b[1])
++    return ratCmp(u[0], v[0]) || ratCmp(u[1], v[1])
++  })
+ 
+-// Prime numbers with efficient reduction
+-var primes = {
+-  k256: null,
+-  p224: null,
+-  p192: null,
+-  p25519: null
+-};
++  //Split edges along junctions
++  for(var i=junctions.length-1; i>=0; --i) {
++    var junction = junctions[i]
++    var e = junction[0]
+ 
+-// Pseudo-Mersenne prime
+-function MPrime(name, p) {
+-  // P = 2 ^ N - K
+-  this.name = name;
+-  this.p = new BN(p, 16);
+-  this.n = this.p.bitLength();
+-  this.k = new BN(1).ishln(this.n).isub(this.p);
++    var edge = edges[e]
++    var s = edge[0]
++    var t = edge[1]
+ 
+-  this.tmp = this._tmp();
+-}
++    //Check if edge is not lexicographically sorted
++    var a = floatPoints[s]
++    var b = floatPoints[t]
++    if(((a[0] - b[0]) || (a[1] - b[1])) < 0) {
++      var tmp = s
++      s = t
++      t = tmp
++    }
+ 
+-MPrime.prototype._tmp = function _tmp() {
+-  var tmp = new BN(null);
+-  tmp.words = new Array(Math.ceil(this.n / 13));
+-  return tmp;
+-};
++    //Split leading edge
++    edge[0] = s
++    var last = edge[1] = junction[1]
+ 
+-MPrime.prototype.ireduce = function ireduce(num) {
+-  // Assumes that `num` is less than `P^2`
+-  // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
+-  var r = num;
+-  var rlen;
++    //If we are grouping edges by color, remember to track data
++    var color
++    if(useColor) {
++      color = edge[2]
++    }
+ 
+-  do {
+-    this.split(r, this.tmp);
+-    r = this.imulK(r);
+-    r = r.iadd(this.tmp);
+-    rlen = r.bitLength();
+-  } while (rlen > this.n);
++    //Split other edges
++    while(i > 0 && junctions[i-1][0] === e) {
++      var junction = junctions[--i]
++      var next = junction[1]
++      if(useColor) {
++        edges.push([last, next, color])
++      } else {
++        edges.push([last, next])
++      }
++      last = next
++    }
+ 
+-  var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
+-  if (cmp === 0) {
+-    r.words[0] = 0;
+-    r.length = 1;
+-  } else if (cmp > 0) {
+-    r.isub(this.p);
+-  } else {
+-    r.strip();
++    //Add final edge
++    if(useColor) {
++      edges.push([last, t, color])
++    } else {
++      edges.push([last, t])
++    }
+   }
+ 
+-  return r;
+-};
+-
+-MPrime.prototype.split = function split(input, out) {
+-  input.ishrn(this.n, 0, out);
+-};
+-
+-MPrime.prototype.imulK = function imulK(num) {
+-  return num.imul(this.k);
+-};
+-
+-function K256() {
+-  MPrime.call(
+-    this,
+-    'k256',
+-    'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
++  //Return constructed rational points
++  return ratPoints
+ }
+-inherits(K256, MPrime);
+-
+-K256.prototype.split = function split(input, output) {
+-  // 256 = 9 * 26 + 22
+-  var mask = 0x3fffff;
+ 
+-  var outLen = Math.min(input.length, 9);
+-  for (var i = 0; i < outLen; i++)
+-    output.words[i] = input.words[i];
+-  output.length = outLen;
++//Merge overlapping points
++function dedupPoints(floatPoints, ratPoints, floatBounds) {
++  var numPoints = floatPoints.length + ratPoints.length
++  var uf        = new UnionFind(numPoints)
+ 
+-  if (input.length <= 9) {
+-    input.words[0] = 0;
+-    input.length = 1;
+-    return;
++  //Compute rational bounds
++  var bounds = floatBounds
++  for(var i=0; i<ratPoints.length; ++i) {
++    var p = ratPoints[i]
++    var xb = boundRat(p[0])
++    var yb = boundRat(p[1])
++    bounds.push([ xb[0], yb[0], xb[1], yb[1] ])
++    floatPoints.push([ ratToFloat(p[0]), ratToFloat(p[1]) ])
+   }
+ 
+-  // Shift by 9 limbs
+-  var prev = input.words[9];
+-  output.words[output.length++] = prev & mask;
++  //Link all points with over lapping boxes
++  boxIntersect(bounds, function(i, j) {
++    uf.link(i, j)
++  })
+ 
+-  for (var i = 10; i < input.length; i++) {
+-    var next = input.words[i];
+-    input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
+-    prev = next;
++  //Call find on each point to get a relabeling
++  var ptr = 0
++  var noDupes = true
++  var labels = new Array(numPoints)
++  for(var i=0; i<numPoints; ++i) {
++    var j = uf.find(i)
++    if(j === i) {
++      //If not a duplicate, then don't bother
++      labels[i] = ptr
++      floatPoints[ptr++] = floatPoints[i]
++    } else {
++      //Clear no-dupes flag, zero out label
++      noDupes = false
++      labels[i] = -1
++    }
+   }
+-  input.words[i - 10] = prev >>> 22;
+-  input.length -= 9;
+-};
+-
+-K256.prototype.imulK = function imulK(num) {
+-  // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
+-  num.words[num.length] = 0;
+-  num.words[num.length + 1] = 0;
+-  num.length += 2;
+-
+-  // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
+-  var hi;
+-  var lo = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var w = num.words[i];
+-    hi = w * 0x40;
+-    lo += w * 0x3d1;
+-    hi += (lo / 0x4000000) | 0;
+-    lo &= 0x3ffffff;
+-
+-    num.words[i] = lo;
++  floatPoints.length = ptr
+ 
+-    lo = hi;
++  //If no duplicates, return null to signal termination
++  if(noDupes) {
++    return null
+   }
+ 
+-  // Fast length reduction
+-  if (num.words[num.length - 1] === 0) {
+-    num.length--;
+-    if (num.words[num.length - 1] === 0)
+-      num.length--;
++  //Do a second pass to fix up missing labels
++  for(var i=0; i<numPoints; ++i) {
++    if(labels[i] < 0) {
++      labels[i] = labels[uf.find(i)]
++    }
+   }
+-  return num;
+-};
+ 
+-function P224() {
+-  MPrime.call(
+-    this,
+-    'p224',
+-    'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
++  //Return resulting union-find data structure
++  return labels
+ }
+-inherits(P224, MPrime);
+ 
+-function P192() {
+-  MPrime.call(
+-    this,
+-    'p192',
+-    'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
++function compareLex2(a,b) { return (a[0]-b[0]) || (a[1]-b[1]) }
++function compareLex3(a,b) {
++  var d = (a[0] - b[0]) || (a[1] - b[1])
++  if(d) {
++    return d
++  }
++  if(a[2] < b[2]) {
++    return -1
++  } else if(a[2] > b[2]) {
++    return 1
++  }
++  return 0
+ }
+-inherits(P192, MPrime);
+ 
+-function P25519() {
+-  // 2 ^ 255 - 19
+-  MPrime.call(
+-    this,
+-    '25519',
+-    '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
++//Remove duplicate edge labels
++function dedupEdges(edges, labels, useColor) {
++  if(edges.length === 0) {
++    return
++  }
++  if(labels) {
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      var a = labels[e[0]]
++      var b = labels[e[1]]
++      e[0] = Math.min(a, b)
++      e[1] = Math.max(a, b)
++    }
++  } else {
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      var a = e[0]
++      var b = e[1]
++      e[0] = Math.min(a, b)
++      e[1] = Math.max(a, b)
++    }
++  }
++  if(useColor) {
++    edges.sort(compareLex3)
++  } else {
++    edges.sort(compareLex2)
++  }
++  var ptr = 1
++  for(var i=1; i<edges.length; ++i) {
++    var prev = edges[i-1]
++    var next = edges[i]
++    if(next[0] === prev[0] && next[1] === prev[1] &&
++      (!useColor || next[2] === prev[2])) {
++      continue
++    }
++    edges[ptr++] = next
++  }
++  edges.length = ptr
+ }
+-inherits(P25519, MPrime);
+ 
+-P25519.prototype.imulK = function imulK(num) {
+-  // K = 0x13
+-  var carry = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var hi = num.words[i] * 0x13 + carry;
+-    var lo = hi & 0x3ffffff;
+-    hi >>>= 26;
++//Repeat until convergence
++function snapRound(points, edges, useColor) {
+ 
+-    num.words[i] = lo;
+-    carry = hi;
+-  }
+-  if (carry !== 0)
+-    num.words[num.length++] = carry;
+-  return num;
+-};
++  // 1. find edge crossings
++  var edgeBounds = boundEdges(points, edges)
++  var crossings  = getCrossings(points, edges, edgeBounds)
+ 
+-// Exported mostly for testing purposes, use plain name instead
+-BN._prime = function prime(name) {
+-  // Cached version of prime
+-  if (primes[name])
+-    return primes[name];
++  // 2. find t-junctions
++  var vertBounds = boundPoints(points)
++  var tjunctions = getTJunctions(points, edges, edgeBounds, vertBounds)
+ 
+-  var prime;
+-  if (name === 'k256')
+-    prime = new K256();
+-  else if (name === 'p224')
+-    prime = new P224();
+-  else if (name === 'p192')
+-    prime = new P192();
+-  else if (name === 'p25519')
+-    prime = new P25519();
+-  else
+-    throw new Error('Unknown prime ' + name);
+-  primes[name] = prime;
++  // 3. cut edges, construct rational points
++  var ratPoints  = cutEdges(points, edges, crossings, tjunctions, useColor)
+ 
+-  return prime;
+-};
++  // 4. dedupe verts
++  var labels     = dedupPoints(points, ratPoints, vertBounds)
+ 
+-//
+-// Base reduction engine
+-//
+-function Red(m) {
+-  if (typeof m === 'string') {
+-    var prime = BN._prime(m);
+-    this.m = prime.p;
+-    this.prime = prime;
+-  } else {
+-    this.m = m;
+-    this.prime = null;
++  // 6. dedupe edges
++  dedupEdges(edges, labels, useColor)
++
++  // 5. check termination
++  if(!labels) {
++    return (crossings.length > 0 || tjunctions.length > 0)
+   }
++
++  // More iterations necessary
++  return true
+ }
+ 
+-Red.prototype._verify1 = function _verify1(a) {
+-  assert(!a.sign, 'red works only with positives');
+-  assert(a.red, 'red works only with red numbers');
+-};
++//Main loop, runs PSLG clean up until completion
++function cleanPSLG(points, edges, colors) {
++  var modified = false
+ 
+-Red.prototype._verify2 = function _verify2(a, b) {
+-  assert(!a.sign && !b.sign, 'red works only with positives');
+-  assert(a.red && a.red === b.red,
+-         'red works only with red numbers');
+-};
++  //If using colors, augment edges with color data
++  var prevEdges
++  if(colors) {
++    prevEdges = edges
++    var augEdges = new Array(edges.length)
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      augEdges[i] = [e[0], e[1], colors[i]]
++    }
++    edges = augEdges
++  }
+ 
+-Red.prototype.imod = function imod(a) {
+-  if (this.prime)
+-    return this.prime.ireduce(a)._forceRed(this);
+-  return a.mod(this.m)._forceRed(this);
+-};
++  //Run snap rounding until convergence
++  while(snapRound(points, edges, !!colors)) {
++    modified = true
++  }
+ 
+-Red.prototype.neg = function neg(a) {
+-  var r = a.clone();
+-  r.sign = !r.sign;
+-  return r.iadd(this.m)._forceRed(this);
+-};
++  //Strip color tags
++  if(!!colors && modified) {
++    prevEdges.length = 0
++    colors.length = 0
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      prevEdges.push([e[0], e[1]])
++      colors.push(e[2])
++    }
++  }
+ 
+-Red.prototype.add = function add(a, b) {
+-  this._verify2(a, b);
++  return modified
++}
+ 
+-  var res = a.add(b);
+-  if (res.cmp(this.m) >= 0)
+-    res.isub(this.m);
+-  return res._forceRed(this);
+-};
++},{"./lib/rat-seg-intersect":58,"big-rat":21,"big-rat/cmp":19,"big-rat/to-float":33,"box-intersect":38,"compare-cell":63,"nextafter":192,"rat-vec":208,"robust-segment-intersect":222,"union-find":247}],58:[function(require,module,exports){
++'use strict'
+ 
+-Red.prototype.iadd = function iadd(a, b) {
+-  this._verify2(a, b);
++//TODO: Move this to a separate module
+ 
+-  var res = a.iadd(b);
+-  if (res.cmp(this.m) >= 0)
+-    res.isub(this.m);
+-  return res;
+-};
++module.exports = solveIntersection
+ 
+-Red.prototype.sub = function sub(a, b) {
+-  this._verify2(a, b);
++var ratMul = require('big-rat/mul')
++var ratDiv = require('big-rat/div')
++var ratSub = require('big-rat/sub')
++var ratSign = require('big-rat/sign')
++var rvSub = require('rat-vec/sub')
++var rvAdd = require('rat-vec/add')
++var rvMuls = require('rat-vec/muls')
+ 
+-  var res = a.sub(b);
+-  if (res.cmpn(0) < 0)
+-    res.iadd(this.m);
+-  return res._forceRed(this);
+-};
++var toFloat = require('big-rat/to-float')
+ 
+-Red.prototype.isub = function isub(a, b) {
+-  this._verify2(a, b);
++function ratPerp(a, b) {
++  return ratSub(ratMul(a[0], b[1]), ratMul(a[1], b[0]))
++}
+ 
+-  var res = a.isub(b);
+-  if (res.cmpn(0) < 0)
+-    res.iadd(this.m);
+-  return res;
+-};
++//Solve for intersection
++//  x = a + t (b-a)
++//  (x - c) ^ (d-c) = 0
++//  (t * (b-a) + (a-c) ) ^ (d-c) = 0
++//  t * (b-a)^(d-c) = (d-c)^(a-c)
++//  t = (d-c)^(a-c) / (b-a)^(d-c)
+ 
+-Red.prototype.shl = function shl(a, num) {
+-  this._verify1(a);
+-  return this.imod(a.shln(num));
+-};
++function solveIntersection(a, b, c, d) {
++  var ba = rvSub(b, a)
++  var dc = rvSub(d, c)
+ 
+-Red.prototype.imul = function imul(a, b) {
+-  this._verify2(a, b);
+-  return this.imod(a.imul(b));
+-};
++  var baXdc = ratPerp(ba, dc)
+ 
+-Red.prototype.mul = function mul(a, b) {
+-  this._verify2(a, b);
+-  return this.imod(a.mul(b));
+-};
++  if(ratSign(baXdc) === 0) {
++    return null
++  }
+ 
+-Red.prototype.isqr = function isqr(a) {
+-  return this.imul(a, a);
+-};
++  var ac = rvSub(a, c)
++  var dcXac = ratPerp(dc, ac)
+ 
+-Red.prototype.sqr = function sqr(a) {
+-  return this.mul(a, a);
+-};
++  var t = ratDiv(dcXac, baXdc)
+ 
+-Red.prototype.sqrt = function sqrt(a) {
+-  if (a.cmpn(0) === 0)
+-    return a.clone();
++  return rvAdd(a, rvMuls(ba, t))
++}
+ 
+-  var mod3 = this.m.andln(3);
+-  assert(mod3 % 2 === 1);
+-
+-  // Fast case
+-  if (mod3 === 3) {
+-    var pow = this.m.add(new BN(1)).ishrn(2);
+-    var r = this.pow(a, pow);
+-    return r;
+-  }
++},{"big-rat/div":20,"big-rat/mul":30,"big-rat/sign":31,"big-rat/sub":32,"big-rat/to-float":33,"rat-vec/add":207,"rat-vec/muls":209,"rat-vec/sub":210}],59:[function(require,module,exports){
++(function (Buffer){
++var clone = (function() {
++'use strict';
+ 
+-  // Tonelli-Shanks algorithm (Totally unoptimized and slow)
+-  //
+-  // Find Q and S, that Q * 2 ^ S = (P - 1)
+-  var q = this.m.subn(1);
+-  var s = 0;
+-  while (q.cmpn(0) !== 0 && q.andln(1) === 0) {
+-    s++;
+-    q.ishrn(1);
++/**
++ * Clones (copies) an Object using deep copying.
++ *
++ * This function supports circular references by default, but if you are certain
++ * there are no circular references in your object, you can save some CPU time
++ * by calling clone(obj, false).
++ *
++ * Caution: if `circular` is false and `parent` contains circular references,
++ * your program may enter an infinite loop and crash.
++ *
++ * @param `parent` - the object to be cloned
++ * @param `circular` - set to true if the object to be cloned may contain
++ *    circular references. (optional - true by default)
++ * @param `depth` - set to a number if the object is only to be cloned to
++ *    a particular depth. (optional - defaults to Infinity)
++ * @param `prototype` - sets the prototype to be used when cloning an object.
++ *    (optional - defaults to parent prototype).
++*/
++function clone(parent, circular, depth, prototype) {
++  var filter;
++  if (typeof circular === 'object') {
++    depth = circular.depth;
++    prototype = circular.prototype;
++    filter = circular.filter;
++    circular = circular.circular
+   }
+-  assert(q.cmpn(0) !== 0);
+-
+-  var one = new BN(1).toRed(this);
+-  var nOne = one.redNeg();
++  // maintain two arrays for circular references, where corresponding parents
++  // and children have the same index
++  var allParents = [];
++  var allChildren = [];
+ 
+-  // Find quadratic non-residue
+-  // NOTE: Max is such because of generalized Riemann hypothesis.
+-  var lpow = this.m.subn(1).ishrn(1);
+-  var z = this.m.bitLength();
+-  z = new BN(2 * z * z).toRed(this);
+-  while (this.pow(z, lpow).cmp(nOne) !== 0)
+-    z.redIAdd(nOne);
++  var useBuffer = typeof Buffer != 'undefined';
+ 
+-  var c = this.pow(z, q);
+-  var r = this.pow(a, q.addn(1).ishrn(1));
+-  var t = this.pow(a, q);
+-  var m = s;
+-  while (t.cmp(one) !== 0) {
+-    var tmp = t;
+-    for (var i = 0; tmp.cmp(one) !== 0; i++)
+-      tmp = tmp.redSqr();
+-    assert(i < m);
+-    var b = this.pow(c, new BN(1).ishln(m - i - 1));
++  if (typeof circular == 'undefined')
++    circular = true;
+ 
+-    r = r.redMul(b);
+-    c = b.redSqr();
+-    t = t.redMul(c);
+-    m = i;
+-  }
++  if (typeof depth == 'undefined')
++    depth = Infinity;
+ 
+-  return r;
+-};
++  // recurse this function so we don't reset allParents and allChildren
++  function _clone(parent, depth) {
++    // cloning null always returns null
++    if (parent === null)
++      return null;
+ 
+-Red.prototype.invm = function invm(a) {
+-  var inv = a._invmp(this.m);
+-  if (inv.sign) {
+-    inv.sign = false;
+-    return this.imod(inv).redNeg();
+-  } else {
+-    return this.imod(inv);
+-  }
+-};
++    if (depth == 0)
++      return parent;
+ 
+-Red.prototype.pow = function pow(a, num) {
+-  var w = [];
++    var child;
++    var proto;
++    if (typeof parent != 'object') {
++      return parent;
++    }
+ 
+-  if (num.cmpn(0) === 0)
+-    return new BN(1);
++    if (clone.__isArray(parent)) {
++      child = [];
++    } else if (clone.__isRegExp(parent)) {
++      child = new RegExp(parent.source, __getRegExpFlags(parent));
++      if (parent.lastIndex) child.lastIndex = parent.lastIndex;
++    } else if (clone.__isDate(parent)) {
++      child = new Date(parent.getTime());
++    } else if (useBuffer && Buffer.isBuffer(parent)) {
++      child = new Buffer(parent.length);
++      parent.copy(child);
++      return child;
++    } else {
++      if (typeof prototype == 'undefined') {
++        proto = Object.getPrototypeOf(parent);
++        child = Object.create(proto);
++      }
++      else {
++        child = Object.create(prototype);
++        proto = prototype;
++      }
++    }
+ 
+-  var q = num.clone();
++    if (circular) {
++      var index = allParents.indexOf(parent);
+ 
+-  while (q.cmpn(0) !== 0) {
+-    w.push(q.andln(1));
+-    q.ishrn(1);
+-  }
++      if (index != -1) {
++        return allChildren[index];
++      }
++      allParents.push(parent);
++      allChildren.push(child);
++    }
+ 
+-  // Skip leading zeroes
+-  var res = a;
+-  for (var i = 0; i < w.length; i++, res = this.sqr(res))
+-    if (w[i] !== 0)
+-      break;
++    for (var i in parent) {
++      var attrs;
++      if (proto) {
++        attrs = Object.getOwnPropertyDescriptor(proto, i);
++      }
+ 
+-  if (++i < w.length) {
+-    for (var q = this.sqr(res); i < w.length; i++, q = this.sqr(q)) {
+-      if (w[i] === 0)
++      if (attrs && attrs.set == null) {
+         continue;
+-      res = this.mul(res, q);
++      }
++      child[i] = _clone(parent[i], depth - 1);
+     }
++
++    return child;
+   }
+ 
+-  return res;
++  return _clone(parent, depth);
++}
++
++/**
++ * Simple flat clone using prototype, accepts only objects, usefull for property
++ * override on FLAT configuration object (no nested props).
++ *
++ * USE WITH CAUTION! This may not behave as you wish if you do not know how this
++ * works.
++ */
++clone.clonePrototype = function clonePrototype(parent) {
++  if (parent === null)
++    return null;
++
++  var c = function () {};
++  c.prototype = parent;
++  return new c();
+ };
+ 
+-Red.prototype.convertTo = function convertTo(num) {
+-  var r = num.mod(this.m);
+-  if (r === num)
+-    return r.clone();
+-  else
+-    return r;
++// private utility functions
++
++function __objToStr(o) {
++  return Object.prototype.toString.call(o);
+ };
++clone.__objToStr = __objToStr;
+ 
+-Red.prototype.convertFrom = function convertFrom(num) {
+-  var res = num.clone();
+-  res.red = null;
+-  return res;
++function __isDate(o) {
++  return typeof o === 'object' && __objToStr(o) === '[object Date]';
+ };
++clone.__isDate = __isDate;
+ 
+-//
+-// Montgomery method engine
+-//
++function __isArray(o) {
++  return typeof o === 'object' && __objToStr(o) === '[object Array]';
++};
++clone.__isArray = __isArray;
+ 
+-BN.mont = function mont(num) {
+-  return new Mont(num);
++function __isRegExp(o) {
++  return typeof o === 'object' && __objToStr(o) === '[object RegExp]';
+ };
++clone.__isRegExp = __isRegExp;
+ 
+-function Mont(m) {
+-  Red.call(this, m);
++function __getRegExpFlags(re) {
++  var flags = '';
++  if (re.global) flags += 'g';
++  if (re.ignoreCase) flags += 'i';
++  if (re.multiline) flags += 'm';
++  return flags;
++};
++clone.__getRegExpFlags = __getRegExpFlags;
+ 
+-  this.shift = this.m.bitLength();
+-  if (this.shift % 26 !== 0)
+-    this.shift += 26 - (this.shift % 26);
+-  this.r = new BN(1).ishln(this.shift);
+-  this.r2 = this.imod(this.r.sqr());
+-  this.rinv = this.r._invmp(this.m);
++return clone;
++})();
+ 
+-  this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
+-  this.minv.sign = true;
+-  this.minv = this.minv.mod(this.r);
++if (typeof module === 'object' && module.exports) {
++  module.exports = clone;
+ }
+-inherits(Mont, Red);
+ 
+-Mont.prototype.convertTo = function convertTo(num) {
+-  return this.imod(num.shln(this.shift));
+-};
++}).call(this,require("buffer").Buffer)
++},{"buffer":45}],60:[function(require,module,exports){
++module.exports={
++	"jet":[{"index":0,"rgb":[0,0,131]},{"index":0.125,"rgb":[0,60,170]},{"index":0.375,"rgb":[5,255,255]},{"index":0.625,"rgb":[255,255,0]},{"index":0.875,"rgb":[250,0,0]},{"index":1,"rgb":[128,0,0]}],
+ 
+-Mont.prototype.convertFrom = function convertFrom(num) {
+-  var r = this.imod(num.mul(this.rinv));
+-  r.red = null;
+-  return r;
+-};
++	"hsv":[{"index":0,"rgb":[255,0,0]},{"index":0.169,"rgb":[253,255,2]},{"index":0.173,"rgb":[247,255,2]},{"index":0.337,"rgb":[0,252,4]},{"index":0.341,"rgb":[0,252,10]},{"index":0.506,"rgb":[1,249,255]},{"index":0.671,"rgb":[2,0,253]},{"index":0.675,"rgb":[8,0,253]},{"index":0.839,"rgb":[255,0,251]},{"index":0.843,"rgb":[255,0,245]},{"index":1,"rgb":[255,0,6]}],
+ 
+-Mont.prototype.imul = function imul(a, b) {
+-  if (a.cmpn(0) === 0 || b.cmpn(0) === 0) {
+-    a.words[0] = 0;
+-    a.length = 1;
+-    return a;
+-  }
++	"hot":[{"index":0,"rgb":[0,0,0]},{"index":0.3,"rgb":[230,0,0]},{"index":0.6,"rgb":[255,210,0]},{"index":1,"rgb":[255,255,255]}],
+ 
+-  var t = a.imul(b);
+-  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
+-  var u = t.isub(c).ishrn(this.shift);
+-  var res = u;
+-  if (u.cmp(this.m) >= 0)
+-    res = u.isub(this.m);
+-  else if (u.cmpn(0) < 0)
+-    res = u.iadd(this.m);
++	"cool":[{"index":0,"rgb":[0,255,255]},{"index":1,"rgb":[255,0,255]}],
+ 
+-  return res._forceRed(this);
+-};
++	"spring":[{"index":0,"rgb":[255,0,255]},{"index":1,"rgb":[255,255,0]}],
+ 
+-Mont.prototype.mul = function mul(a, b) {
+-  if (a.cmpn(0) === 0 || b.cmpn(0) === 0)
+-    return new BN(0)._forceRed(this);
++	"summer":[{"index":0,"rgb":[0,128,102]},{"index":1,"rgb":[255,255,102]}],
+ 
+-  var t = a.mul(b);
+-  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
+-  var u = t.isub(c).ishrn(this.shift);
+-  var res = u;
+-  if (u.cmp(this.m) >= 0)
+-    res = u.isub(this.m);
+-  else if (u.cmpn(0) < 0)
+-    res = u.iadd(this.m);
++	"autumn":[{"index":0,"rgb":[255,0,0]},{"index":1,"rgb":[255,255,0]}],
+ 
+-  return res._forceRed(this);
+-};
++	"winter":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[0,255,128]}],
+ 
+-Mont.prototype.invm = function invm(a) {
+-  // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
+-  var res = this.imod(a._invmp(this.m).mul(this.r2));
+-  return res._forceRed(this);
+-};
++	"bone":[{"index":0,"rgb":[0,0,0]},{"index":0.376,"rgb":[84,84,116]},{"index":0.753,"rgb":[169,200,200]},{"index":1,"rgb":[255,255,255]}],
+ 
+-})(typeof module === 'undefined' || module, this);
++	"copper":[{"index":0,"rgb":[0,0,0]},{"index":0.804,"rgb":[255,160,102]},{"index":1,"rgb":[255,199,127]}],
+ 
+-},{}],68:[function(require,module,exports){
+-'use strict'
++	"greys":[{"index":0,"rgb":[0,0,0]},{"index":1,"rgb":[255,255,255]}],
+ 
+-var bnsign = require('./lib/bn-sign')
++	"yignbu":[{"index":0,"rgb":[8,29,88]},{"index":0.125,"rgb":[37,52,148]},{"index":0.25,"rgb":[34,94,168]},{"index":0.375,"rgb":[29,145,192]},{"index":0.5,"rgb":[65,182,196]},{"index":0.625,"rgb":[127,205,187]},{"index":0.75,"rgb":[199,233,180]},{"index":0.875,"rgb":[237,248,217]},{"index":1,"rgb":[255,255,217]}],
+ 
+-module.exports = sign
++	"greens":[{"index":0,"rgb":[0,68,27]},{"index":0.125,"rgb":[0,109,44]},{"index":0.25,"rgb":[35,139,69]},{"index":0.375,"rgb":[65,171,93]},{"index":0.5,"rgb":[116,196,118]},{"index":0.625,"rgb":[161,217,155]},{"index":0.75,"rgb":[199,233,192]},{"index":0.875,"rgb":[229,245,224]},{"index":1,"rgb":[247,252,245]}],
+ 
+-function sign(x) {
+-  return bnsign(x[0]) * bnsign(x[1])
+-}
++	"yiorrd":[{"index":0,"rgb":[128,0,38]},{"index":0.125,"rgb":[189,0,38]},{"index":0.25,"rgb":[227,26,28]},{"index":0.375,"rgb":[252,78,42]},{"index":0.5,"rgb":[253,141,60]},{"index":0.625,"rgb":[254,178,76]},{"index":0.75,"rgb":[254,217,118]},{"index":0.875,"rgb":[255,237,160]},{"index":1,"rgb":[255,255,204]}],
+ 
+-},{"./lib/bn-sign":59}],69:[function(require,module,exports){
+-'use strict'
++	"bluered":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[255,0,0]}],
+ 
+-var rationalize = require('./lib/rationalize')
++	"rdbu":[{"index":0,"rgb":[5,10,172]},{"index":0.35,"rgb":[106,137,247]},{"index":0.5,"rgb":[190,190,190]},{"index":0.6,"rgb":[220,170,132]},{"index":0.7,"rgb":[230,145,90]},{"index":1,"rgb":[178,10,28]}],
+ 
+-module.exports = sub
++	"picnic":[{"index":0,"rgb":[0,0,255]},{"index":0.1,"rgb":[51,153,255]},{"index":0.2,"rgb":[102,204,255]},{"index":0.3,"rgb":[153,204,255]},{"index":0.4,"rgb":[204,204,255]},{"index":0.5,"rgb":[255,255,255]},{"index":0.6,"rgb":[255,204,255]},{"index":0.7,"rgb":[255,153,255]},{"index":0.8,"rgb":[255,102,204]},{"index":0.9,"rgb":[255,102,102]},{"index":1,"rgb":[255,0,0]}],
+ 
+-function sub(a, b) {
+-  return rationalize(a[0].mul(b[1]).sub(a[1].mul(b[0])), a[1].mul(b[1]))
+-}
++	"rainbow":[{"index":0,"rgb":[150,0,90]},{"index":0.125,"rgb":[0,0,200]},{"index":0.25,"rgb":[0,25,255]},{"index":0.375,"rgb":[0,152,255]},{"index":0.5,"rgb":[44,255,150]},{"index":0.625,"rgb":[151,255,0]},{"index":0.75,"rgb":[255,234,0]},{"index":0.875,"rgb":[255,111,0]},{"index":1,"rgb":[255,0,0]}],
+ 
+-},{"./lib/rationalize":64}],70:[function(require,module,exports){
+-'use strict'
++	"portland":[{"index":0,"rgb":[12,51,131]},{"index":0.25,"rgb":[10,136,186]},{"index":0.5,"rgb":[242,211,56]},{"index":0.75,"rgb":[242,143,56]},{"index":1,"rgb":[217,30,30]}],
+ 
+-var bn2num = require('./lib/bn-to-num')
+-var ctz = require('./lib/ctz')
++	"blackbody":[{"index":0,"rgb":[0,0,0]},{"index":0.2,"rgb":[230,0,0]},{"index":0.4,"rgb":[230,210,0]},{"index":0.7,"rgb":[255,255,255]},{"index":1,"rgb":[160,200,255]}],
+ 
+-module.exports = roundRat
++	"earth":[{"index":0,"rgb":[0,0,130]},{"index":0.1,"rgb":[0,180,180]},{"index":0.2,"rgb":[40,210,40]},{"index":0.4,"rgb":[230,230,50]},{"index":0.6,"rgb":[120,70,20]},{"index":1,"rgb":[255,255,255]}],
+ 
+-//Round a rational to the closest float
+-function roundRat(f) {
+-  var a = f[0]
+-  var b = f[1]
+-  if(a.cmpn(0) === 0) {
+-    return 0
+-  }
+-  var h = a.divmod(b)
+-  var iv = h.div
+-  var x = bn2num(iv)
+-  var ir = h.mod
+-  if(ir.cmpn(0) === 0) {
+-    return x
+-  }
+-  if(x) {
+-    var s = ctz(x) + 4
+-    var y = bn2num(ir.shln(s).divRound(b))
++	"electric":[{"index":0,"rgb":[0,0,0]},{"index":0.15,"rgb":[30,0,100]},{"index":0.4,"rgb":[120,0,100]},{"index":0.6,"rgb":[160,90,0]},{"index":0.8,"rgb":[230,200,0]},{"index":1,"rgb":[255,250,220]}],
+ 
+-    // flip the sign of y if x is negative
+-    if (x<0) {
+-      y = -y;
+-    }
++	"alpha": [{"index":0, "rgb": [255,255,255,0]},{"index":0, "rgb": [255,255,255,1]}],
+ 
+-    return x + y * Math.pow(2, -s)
+-  } else {
+-    var ybits = b.bitLength() - ir.bitLength() + 53
+-    var y = bn2num(ir.shln(ybits).divRound(b))
+-    if(ybits < 1023) {
+-      return y * Math.pow(2, -ybits)
+-    }
+-    y *= Math.pow(2, -1023)
+-    return y * Math.pow(2, 1023-ybits)
+-  }
+-}
++	"viridis": [{"index":0,"rgb":[68,1,84]},{"index":0.13,"rgb":[71,44,122]},{"index":0.25,"rgb":[59,81,139]},{"index":0.38,"rgb":[44,113,142]},{"index":0.5,"rgb":[33,144,141]},{"index":0.63,"rgb":[39,173,129]},{"index":0.75,"rgb":[92,200,99]},{"index":0.88,"rgb":[170,220,50]},{"index":1,"rgb":[253,231,37]}],
+ 
+-},{"./lib/bn-to-num":60,"./lib/ctz":61}],71:[function(require,module,exports){
+-'use strict'
++	"inferno": [{"index":0,"rgb":[0,0,4]},{"index":0.13,"rgb":[31,12,72]},{"index":0.25,"rgb":[85,15,109]},{"index":0.38,"rgb":[136,34,106]},{"index":0.5,"rgb":[186,54,85]},{"index":0.63,"rgb":[227,89,51]},{"index":0.75,"rgb":[249,140,10]},{"index":0.88,"rgb":[249,201,50]},{"index":1,"rgb":[252,255,164]}],
+ 
+-module.exports = boxIntersectWrapper
++	"magma": [{"index":0,"rgb":[0,0,4]},{"index":0.13,"rgb":[28,16,68]},{"index":0.25,"rgb":[79,18,123]},{"index":0.38,"rgb":[129,37,129]},{"index":0.5,"rgb":[181,54,122]},{"index":0.63,"rgb":[229,80,100]},{"index":0.75,"rgb":[251,135,97]},{"index":0.88,"rgb":[254,194,135]},{"index":1,"rgb":[252,253,191]}],
+ 
+-var pool = require('typedarray-pool')
+-var sweep = require('./lib/sweep')
+-var boxIntersectIter = require('./lib/intersect')
++	"plasma": [{"index":0,"rgb":[13,8,135]},{"index":0.13,"rgb":[75,3,161]},{"index":0.25,"rgb":[125,3,168]},{"index":0.38,"rgb":[168,34,150]},{"index":0.5,"rgb":[203,70,121]},{"index":0.63,"rgb":[229,107,93]},{"index":0.75,"rgb":[248,148,65]},{"index":0.88,"rgb":[253,195,40]},{"index":1,"rgb":[240,249,33]}],
+ 
+-function boxEmpty(d, box) {
+-  for(var j=0; j<d; ++j) {
+-    if(!(box[j] <= box[j+d])) {
+-      return true
+-    }
+-  }
+-  return false
+-}
++	"warm": [{"index":0,"rgb":[125,0,179]},{"index":0.13,"rgb":[172,0,187]},{"index":0.25,"rgb":[219,0,170]},{"index":0.38,"rgb":[255,0,130]},{"index":0.5,"rgb":[255,63,74]},{"index":0.63,"rgb":[255,123,0]},{"index":0.75,"rgb":[234,176,0]},{"index":0.88,"rgb":[190,228,0]},{"index":1,"rgb":[147,255,0]}],
+ 
+-//Unpack boxes into a flat typed array, remove empty boxes
+-function convertBoxes(boxes, d, data, ids) {
+-  var ptr = 0
+-  var count = 0
+-  for(var i=0, n=boxes.length; i<n; ++i) {
+-    var b = boxes[i]
+-    if(boxEmpty(d, b)) {
+-      continue
+-    }
+-    for(var j=0; j<2*d; ++j) {
+-      data[ptr++] = b[j]
+-    }
+-    ids[count++] = i
+-  }
+-  return count
+-}
++	"cool": [{"index":0,"rgb":[125,0,179]},{"index":0.13,"rgb":[116,0,218]},{"index":0.25,"rgb":[98,74,237]},{"index":0.38,"rgb":[68,146,231]},{"index":0.5,"rgb":[0,204,197]},{"index":0.63,"rgb":[0,247,146]},{"index":0.75,"rgb":[0,255,88]},{"index":0.88,"rgb":[40,255,8]},{"index":1,"rgb":[147,255,0]}],
+ 
+-//Perform type conversions, check bounds
+-function boxIntersect(red, blue, visit, full) {
+-  var n = red.length
+-  var m = blue.length
++	"rainbow-soft": [{"index":0,"rgb":[125,0,179]},{"index":0.1,"rgb":[199,0,180]},{"index":0.2,"rgb":[255,0,121]},{"index":0.3,"rgb":[255,108,0]},{"index":0.4,"rgb":[222,194,0]},{"index":0.5,"rgb":[150,255,0]},{"index":0.6,"rgb":[0,255,55]},{"index":0.7,"rgb":[0,246,150]},{"index":0.8,"rgb":[50,167,222]},{"index":0.9,"rgb":[103,51,235]},{"index":1,"rgb":[124,0,186]}],
+ 
+-  //If either array is empty, then we can skip this whole thing
+-  if(n <= 0 || m <= 0) {
+-    return
+-  }
++	"bathymetry": [{"index":0,"rgb":[40,26,44]},{"index":0.13,"rgb":[59,49,90]},{"index":0.25,"rgb":[64,76,139]},{"index":0.38,"rgb":[63,110,151]},{"index":0.5,"rgb":[72,142,158]},{"index":0.63,"rgb":[85,174,163]},{"index":0.75,"rgb":[120,206,163]},{"index":0.88,"rgb":[187,230,172]},{"index":1,"rgb":[253,254,204]}],
+ 
+-  //Compute dimension, if it is 0 then we skip
+-  var d = (red[0].length)>>>1
+-  if(d <= 0) {
+-    return
+-  }
++	"cdom": [{"index":0,"rgb":[47,15,62]},{"index":0.13,"rgb":[87,23,86]},{"index":0.25,"rgb":[130,28,99]},{"index":0.38,"rgb":[171,41,96]},{"index":0.5,"rgb":[206,67,86]},{"index":0.63,"rgb":[230,106,84]},{"index":0.75,"rgb":[242,149,103]},{"index":0.88,"rgb":[249,193,135]},{"index":1,"rgb":[254,237,176]}],
+ 
+-  var retval
++	"chlorophyll": [{"index":0,"rgb":[18,36,20]},{"index":0.13,"rgb":[25,63,41]},{"index":0.25,"rgb":[24,91,59]},{"index":0.38,"rgb":[13,119,72]},{"index":0.5,"rgb":[18,148,80]},{"index":0.63,"rgb":[80,173,89]},{"index":0.75,"rgb":[132,196,122]},{"index":0.88,"rgb":[175,221,162]},{"index":1,"rgb":[215,249,208]}],
+ 
+-  //Convert red boxes
+-  var redList  = pool.mallocDouble(2*d*n)
+-  var redIds   = pool.mallocInt32(n)
+-  n = convertBoxes(red, d, redList, redIds)
++	"density": [{"index":0,"rgb":[54,14,36]},{"index":0.13,"rgb":[89,23,80]},{"index":0.25,"rgb":[110,45,132]},{"index":0.38,"rgb":[120,77,178]},{"index":0.5,"rgb":[120,113,213]},{"index":0.63,"rgb":[115,151,228]},{"index":0.75,"rgb":[134,185,227]},{"index":0.88,"rgb":[177,214,227]},{"index":1,"rgb":[230,241,241]}],
+ 
+-  if(n > 0) {
+-    if(d === 1 && full) {
+-      //Special case: 1d complete
+-      sweep.init(n)
+-      retval = sweep.sweepComplete(
+-        d, visit, 
+-        0, n, redList, redIds,
+-        0, n, redList, redIds)
+-    } else {
++	"freesurface-blue": [{"index":0,"rgb":[30,4,110]},{"index":0.13,"rgb":[47,14,176]},{"index":0.25,"rgb":[41,45,236]},{"index":0.38,"rgb":[25,99,212]},{"index":0.5,"rgb":[68,131,200]},{"index":0.63,"rgb":[114,156,197]},{"index":0.75,"rgb":[157,181,203]},{"index":0.88,"rgb":[200,208,216]},{"index":1,"rgb":[241,237,236]}],
+ 
+-      //Convert blue boxes
+-      var blueList = pool.mallocDouble(2*d*m)
+-      var blueIds  = pool.mallocInt32(m)
+-      m = convertBoxes(blue, d, blueList, blueIds)
++	"freesurface-red": [{"index":0,"rgb":[60,9,18]},{"index":0.13,"rgb":[100,17,27]},{"index":0.25,"rgb":[142,20,29]},{"index":0.38,"rgb":[177,43,27]},{"index":0.5,"rgb":[192,87,63]},{"index":0.63,"rgb":[205,125,105]},{"index":0.75,"rgb":[216,162,148]},{"index":0.88,"rgb":[227,199,193]},{"index":1,"rgb":[241,237,236]}],
+ 
+-      if(m > 0) {
+-        sweep.init(n+m)
++	"oxygen": [{"index":0,"rgb":[64,5,5]},{"index":0.13,"rgb":[106,6,15]},{"index":0.25,"rgb":[144,26,7]},{"index":0.38,"rgb":[168,64,3]},{"index":0.5,"rgb":[188,100,4]},{"index":0.63,"rgb":[206,136,11]},{"index":0.75,"rgb":[220,174,25]},{"index":0.88,"rgb":[231,215,44]},{"index":1,"rgb":[248,254,105]}],
+ 
+-        if(d === 1) {
+-          //Special case: 1d bipartite
+-          retval = sweep.sweepBipartite(
+-            d, visit, 
+-            0, n, redList,  redIds,
+-            0, m, blueList, blueIds)
+-        } else {
+-          //General case:  d>1
+-          retval = boxIntersectIter(
+-            d, visit,    full,
+-            n, redList,  redIds,
+-            m, blueList, blueIds)
+-        }
++	"par": [{"index":0,"rgb":[51,20,24]},{"index":0.13,"rgb":[90,32,35]},{"index":0.25,"rgb":[129,44,34]},{"index":0.38,"rgb":[159,68,25]},{"index":0.5,"rgb":[182,99,19]},{"index":0.63,"rgb":[199,134,22]},{"index":0.75,"rgb":[212,171,35]},{"index":0.88,"rgb":[221,210,54]},{"index":1,"rgb":[225,253,75]}],
+ 
+-        pool.free(blueList)
+-        pool.free(blueIds)
+-      }
+-    }
++	"phase": [{"index":0,"rgb":[145,105,18]},{"index":0.13,"rgb":[184,71,38]},{"index":0.25,"rgb":[186,58,115]},{"index":0.38,"rgb":[160,71,185]},{"index":0.5,"rgb":[110,97,218]},{"index":0.63,"rgb":[50,123,164]},{"index":0.75,"rgb":[31,131,110]},{"index":0.88,"rgb":[77,129,34]},{"index":1,"rgb":[145,105,18]}],
+ 
+-    pool.free(redList)
+-    pool.free(redIds)
+-  }
++	"salinity": [{"index":0,"rgb":[42,24,108]},{"index":0.13,"rgb":[33,50,162]},{"index":0.25,"rgb":[15,90,145]},{"index":0.38,"rgb":[40,118,137]},{"index":0.5,"rgb":[59,146,135]},{"index":0.63,"rgb":[79,175,126]},{"index":0.75,"rgb":[120,203,104]},{"index":0.88,"rgb":[193,221,100]},{"index":1,"rgb":[253,239,154]}],
+ 
+-  return retval
+-}
++	"temperature": [{"index":0,"rgb":[4,35,51]},{"index":0.13,"rgb":[23,51,122]},{"index":0.25,"rgb":[85,59,157]},{"index":0.38,"rgb":[129,79,143]},{"index":0.5,"rgb":[175,95,130]},{"index":0.63,"rgb":[222,112,101]},{"index":0.75,"rgb":[249,146,66]},{"index":0.88,"rgb":[249,196,65]},{"index":1,"rgb":[232,250,91]}],
+ 
++	"turbidity": [{"index":0,"rgb":[34,31,27]},{"index":0.13,"rgb":[65,50,41]},{"index":0.25,"rgb":[98,69,52]},{"index":0.38,"rgb":[131,89,57]},{"index":0.5,"rgb":[161,112,59]},{"index":0.63,"rgb":[185,140,66]},{"index":0.75,"rgb":[202,174,88]},{"index":0.88,"rgb":[216,209,126]},{"index":1,"rgb":[233,246,171]}],
+ 
+-var RESULT
++	"velocity-blue": [{"index":0,"rgb":[17,32,64]},{"index":0.13,"rgb":[35,52,116]},{"index":0.25,"rgb":[29,81,156]},{"index":0.38,"rgb":[31,113,162]},{"index":0.5,"rgb":[50,144,169]},{"index":0.63,"rgb":[87,173,176]},{"index":0.75,"rgb":[149,196,189]},{"index":0.88,"rgb":[203,221,211]},{"index":1,"rgb":[254,251,230]}],
+ 
+-function appendItem(i,j) {
+-  RESULT.push([i,j])
+-}
++	"velocity-green": [{"index":0,"rgb":[23,35,19]},{"index":0.13,"rgb":[24,64,38]},{"index":0.25,"rgb":[11,95,45]},{"index":0.38,"rgb":[39,123,35]},{"index":0.5,"rgb":[95,146,12]},{"index":0.63,"rgb":[152,165,18]},{"index":0.75,"rgb":[201,186,69]},{"index":0.88,"rgb":[233,216,137]},{"index":1,"rgb":[255,253,205]}],
+ 
+-function intersectFullArray(x) {
+-  RESULT = []
+-  boxIntersect(x, x, appendItem, true)
+-  return RESULT
+-}
++	"cubehelix": [{"index":0,"rgb":[0,0,0]},{"index":0.07,"rgb":[22,5,59]},{"index":0.13,"rgb":[60,4,105]},{"index":0.2,"rgb":[109,1,135]},{"index":0.27,"rgb":[161,0,147]},{"index":0.33,"rgb":[210,2,142]},{"index":0.4,"rgb":[251,11,123]},{"index":0.47,"rgb":[255,29,97]},{"index":0.53,"rgb":[255,54,69]},{"index":0.6,"rgb":[255,85,46]},{"index":0.67,"rgb":[255,120,34]},{"index":0.73,"rgb":[255,157,37]},{"index":0.8,"rgb":[241,191,57]},{"index":0.87,"rgb":[224,220,93]},{"index":0.93,"rgb":[218,241,142]},{"index":1,"rgb":[227,253,198]}]
++};
+ 
+-function intersectBipartiteArray(x, y) {
+-  RESULT = []
+-  boxIntersect(x, y, appendItem, false)
+-  return RESULT
+-}
++},{}],61:[function(require,module,exports){
++/*
++ * Ben Postlethwaite
++ * January 2013
++ * License MIT
++ */
++'use strict';
+ 
+-//User-friendly wrapper, handle full input and no-visitor cases
+-function boxIntersectWrapper(arg0, arg1, arg2) {
+-  var result
+-  switch(arguments.length) {
+-    case 1:
+-      return intersectFullArray(arg0)
+-    case 2:
+-      if(typeof arg1 === 'function') {
+-        return boxIntersect(arg0, arg0, arg1, true)
+-      } else {
+-        return intersectBipartiteArray(arg0, arg1)
+-      }
+-    case 3:
+-      return boxIntersect(arg0, arg1, arg2, false)
+-    default:
+-      throw new Error('box-intersect: Invalid arguments')
+-  }
+-}
+-},{"./lib/intersect":73,"./lib/sweep":77,"typedarray-pool":242}],72:[function(require,module,exports){
+-'use strict'
++var at = require('arraytools');
++var clone = require('clone');
++var colorScale = require('./colorScales');
+ 
+-var DIMENSION   = 'd'
+-var AXIS        = 'ax'
+-var VISIT       = 'vv'
+-var FLIP        = 'fp'
++module.exports = createColormap;
+ 
+-var ELEM_SIZE   = 'es'
++function createColormap (spec) {
++    /*
++     * Default Options
++     */
++    var indicies, rgba, fromrgba, torgba,
++        nsteps, cmap, colormap, format,
++        nshades, colors, alpha, index, i,
++        r = [],
++        g = [],
++        b = [],
++        a = [];
+ 
+-var RED_START   = 'rs'
+-var RED_END     = 're'
+-var RED_BOXES   = 'rb'
+-var RED_INDEX   = 'ri'
+-var RED_PTR     = 'rp'
++    if ( !at.isPlainObject(spec) ) spec = {};
+ 
+-var BLUE_START  = 'bs'
+-var BLUE_END    = 'be'
+-var BLUE_BOXES  = 'bb'
+-var BLUE_INDEX  = 'bi'
+-var BLUE_PTR    = 'bp'
++    nshades = spec.nshades || 72;
++    format = spec.format || 'hex';
+ 
+-var RETVAL      = 'rv'
++    colormap = spec.colormap;
++    if (!colormap) colormap = 'jet';
+ 
+-var INNER_LABEL = 'Q'
++    if (typeof colormap === 'string') {
++        colormap = colormap.toLowerCase();
+ 
+-var ARGS = [
+-  DIMENSION,
+-  AXIS,
+-  VISIT,
+-  RED_START,
+-  RED_END,
+-  RED_BOXES,
+-  RED_INDEX,
+-  BLUE_START,
+-  BLUE_END,
+-  BLUE_BOXES,
+-  BLUE_INDEX
+-]
++        if (!colorScale[colormap]) {
++            throw Error(colormap + ' not a supported colorscale');
++        }
+ 
+-function generateBruteForce(redMajor, flip, full) {
+-  var funcName = 'bruteForce' + 
+-    (redMajor ? 'Red' : 'Blue') + 
+-    (flip ? 'Flip' : '') +
+-    (full ? 'Full' : '')
++        cmap = clone(colorScale[colormap]);
+ 
+-  var code = ['function ', funcName, '(', ARGS.join(), '){',
+-    'var ', ELEM_SIZE, '=2*', DIMENSION, ';']
++    } else if (Array.isArray(colormap)) {
++        cmap = clone(colormap);
+ 
+-  var redLoop = 
+-    'for(var i=' + RED_START + ',' + RED_PTR + '=' + ELEM_SIZE + '*' + RED_START + ';' +
+-        'i<' + RED_END +';' +
+-        '++i,' + RED_PTR + '+=' + ELEM_SIZE + '){' +
+-        'var x0=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '],' +
+-            'x1=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '+' + DIMENSION + '],' +
+-            'xi=' + RED_INDEX + '[i];'
++    } else {
++        throw Error('unsupported colormap option', colormap);
++    }
+ 
+-  var blueLoop = 
+-    'for(var j=' + BLUE_START + ',' + BLUE_PTR + '=' + ELEM_SIZE + '*' + BLUE_START + ';' +
+-        'j<' + BLUE_END + ';' +
+-        '++j,' + BLUE_PTR + '+=' + ELEM_SIZE + '){' +
+-        'var y0=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '],' +
+-            (full ? 'y1=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '+' + DIMENSION + '],' : '') +
+-            'yi=' + BLUE_INDEX + '[j];'
++    if (cmap.length > nshades) {
++        throw new Error(
++            colormap+' map requires nshades to be at least size '+cmap.length
++        );
++    }
+ 
+-  if(redMajor) {
+-    code.push(redLoop, INNER_LABEL, ':', blueLoop)
+-  } else {
+-    code.push(blueLoop, INNER_LABEL, ':', redLoop)
+-  }
++    if (!Array.isArray(spec.alpha)) {
+ 
+-  if(full) {
+-    code.push('if(y1<x0||x1<y0)continue;')
+-  } else if(flip) {
+-    code.push('if(y0<=x0||x1<y0)continue;')
+-  } else {
+-    code.push('if(y0<x0||x1<y0)continue;')
+-  }
++        if (typeof spec.alpha === 'number') {
++            alpha = [spec.alpha, spec.alpha];
+ 
+-  code.push('for(var k='+AXIS+'+1;k<'+DIMENSION+';++k){'+
+-    'var r0='+RED_BOXES+'[k+'+RED_PTR+'],'+
+-        'r1='+RED_BOXES+'[k+'+DIMENSION+'+'+RED_PTR+'],'+
+-        'b0='+BLUE_BOXES+'[k+'+BLUE_PTR+'],'+
+-        'b1='+BLUE_BOXES+'[k+'+DIMENSION+'+'+BLUE_PTR+'];'+
+-      'if(r1<b0||b1<r0)continue ' + INNER_LABEL + ';}' +
+-      'var ' + RETVAL + '=' + VISIT + '(')
++        } else {
++            alpha = [1, 1];
++        }
+ 
+-  if(flip) {
+-    code.push('yi,xi')
+-  } else {
+-    code.push('xi,yi')
+-  }
++    } else if (spec.alpha.length !== 2) {
++        alpha = [1, 1];
+ 
+-  code.push(');if(' + RETVAL + '!==void 0)return ' + RETVAL + ';}}}')
++    } else {
++        alpha = clone(spec.alpha);
++    }
+ 
+-  return {
+-    name: funcName, 
+-    code: code.join('')
+-  }
+-}
++    /*
++     * map index points from 0->1 to 0 -> n-1
++     */
++    indicies = cmap.map(function(c) {
++        return Math.round(c.index * nshades);
++    });
+ 
+-function bruteForcePlanner(full) {
+-  var funcName = 'bruteForce' + (full ? 'Full' : 'Partial')
+-  var prefix = []
+-  var fargs = ARGS.slice()
+-  if(!full) {
+-    fargs.splice(3, 0, FLIP)
+-  }
++    /*
++     * Add alpha channel to the map
++     */
++    if (alpha[0] < 0) alpha[0] = 0;
++    if (alpha[1] < 0) alpha[0] = 0;
++    if (alpha[0] > 1) alpha[0] = 1;
++    if (alpha[1] > 1) alpha[0] = 1;
+ 
+-  var code = ['function ' + funcName + '(' + fargs.join() + '){']
++    for (i = 0; i < indicies.length; ++i) {
++        index = cmap[i].index;
++        rgba = cmap[i].rgb;
+ 
+-  function invoke(redMajor, flip) {
+-    var res = generateBruteForce(redMajor, flip, full)
+-    prefix.push(res.code)
+-    code.push('return ' + res.name + '(' + ARGS.join() + ');')
+-  }
++        // if user supplies their own map use it
++        if (rgba.length === 4 && rgba[3] >= 0 && rgba[3] <= 1) continue;
++        rgba[3] = alpha[0] + (alpha[1] - alpha[0])*index;
++    }
+ 
+-  code.push('if(' + RED_END + '-' + RED_START + '>' +
+-                    BLUE_END + '-' + BLUE_START + '){')
++    /*
++     * map increasing linear values between indicies to
++     * linear steps in colorvalues
++     */
++    for (i = 0; i < indicies.length-1; ++i) {
++        nsteps = indicies[i+1] - indicies[i];
++        fromrgba = cmap[i].rgb;
++        torgba = cmap[i+1].rgb;
++        r = r.concat(at.linspace(fromrgba[0], torgba[0], nsteps ) );
++        g = g.concat(at.linspace(fromrgba[1], torgba[1], nsteps ) );
++        b = b.concat(at.linspace(fromrgba[2], torgba[2], nsteps ) );
++        a = a.concat(at.linspace(fromrgba[3], torgba[3], nsteps ) );
++    }
+ 
+-  if(full) {
+-    invoke(true, false)
+-    code.push('}else{')
+-    invoke(false, false)
+-  } else {
+-    code.push('if(' + FLIP + '){')
+-    invoke(true, true)
+-    code.push('}else{')
+-    invoke(true, false)
+-    code.push('}}else{if(' + FLIP + '){')
+-    invoke(false, true)
+-    code.push('}else{')
+-    invoke(false, false)
+-    code.push('}')
+-  }
+-  code.push('}}return ' + funcName)
++    r = r.map( Math.round );
++    g = g.map( Math.round );
++    b = b.map( Math.round );
+ 
+-  var codeStr = prefix.join('') + code.join('')
+-  var proc = new Function(codeStr)
+-  return proc()
+-}
++    colors = at.zip(r, g, b, a);
+ 
++    if (format === 'hex') colors = colors.map( rgb2hex );
++    if (format === 'rgbaString') colors = colors.map( rgbaStr );
+ 
+-exports.partial = bruteForcePlanner(false)
+-exports.full    = bruteForcePlanner(true)
+-},{}],73:[function(require,module,exports){
+-'use strict'
++    return colors;
++};
+ 
+-module.exports = boxIntersectIter
+ 
+-var pool = require('typedarray-pool')
+-var bits = require('bit-twiddle')
+-var bruteForce = require('./brute')
+-var bruteForcePartial = bruteForce.partial
+-var bruteForceFull = bruteForce.full
+-var sweep = require('./sweep')
+-var findMedian = require('./median')
+-var genPartition = require('./partition')
++function rgb2hex (rgba) {
++    var dig, hex = '#';
++    for (var i = 0; i < 3; ++i) {
++        dig = rgba[i];
++        dig = dig.toString(16);
++        hex += ('00' + dig).substr( dig.length );
++    }
++    return hex;
++}
+ 
+-//Twiddle parameters
+-var BRUTE_FORCE_CUTOFF    = 128       //Cut off for brute force search
+-var SCAN_CUTOFF           = (1<<22)   //Cut off for two way scan
+-var SCAN_COMPLETE_CUTOFF  = (1<<22)  
++function rgbaStr (rgba) {
++    return 'rgba(' + rgba.join(',') + ')';
++}
+ 
+-//Partition functions
+-var partitionInteriorContainsInterval = genPartition(
+-  '!(lo>=p0)&&!(p1>=hi)', 
+-  ['p0', 'p1'])
++},{"./colorScales":60,"arraytools":15,"clone":59}],62:[function(require,module,exports){
++"use strict"
+ 
+-var partitionStartEqual = genPartition(
+-  'lo===p0',
+-  ['p0'])
++module.exports = compareAngle
+ 
+-var partitionStartLessThan = genPartition(
+-  'lo<p0',
+-  ['p0'])
++var orient = require("robust-orientation")
++var sgn = require("signum")
++var twoSum = require("two-sum")
++var robustProduct = require("robust-product")
++var robustSum = require("robust-sum")
+ 
+-var partitionEndLessThanEqual = genPartition(
+-  'hi<=p0',
+-  ['p0'])
++function testInterior(a, b, c) {
++  var x0 = twoSum(a[0], -b[0])
++  var y0 = twoSum(a[1], -b[1])
++  var x1 = twoSum(c[0], -b[0])
++  var y1 = twoSum(c[1], -b[1])
+ 
+-var partitionContainsPoint = genPartition(
+-  'lo<=p0&&p0<=hi',
+-  ['p0'])
++  var d = robustSum(
++    robustProduct(x0, x1),
++    robustProduct(y0, y1))
+ 
+-var partitionContainsPointProper = genPartition(
+-  'lo<p0&&p0<=hi',
+-  ['p0'])
++  return d[d.length-1] >= 0
++}
+ 
+-//Frame size for iterative loop
+-var IFRAME_SIZE = 6
+-var DFRAME_SIZE = 2
++function compareAngle(a, b, c, d) {
++  var bcd = orient(b, c, d)
++  if(bcd === 0) {
++    //Handle degenerate cases
++    var sabc = sgn(orient(a, b, c))
++    var sabd = sgn(orient(a, b, d))
++    if(sabc === sabd) {
++      if(sabc === 0) {
++        var ic = testInterior(a, b, c)
++        var id = testInterior(a, b, d)
++        if(ic === id) {
++          return 0
++        } else if(ic) {
++          return 1
++        } else {
++          return -1
++        }
++      }
++      return 0
++    } else if(sabd === 0) {
++      if(sabc > 0) {
++        return -1
++      } else if(testInterior(a, b, d)) {
++        return -1
++      } else {
++        return 1
++      }
++    } else if(sabc === 0) {
++      if(sabd > 0) {
++        return 1
++      } else if(testInterior(a, b, c)) {
++        return 1
++      } else {
++        return -1
++      }
++    }
++    return sgn(sabd - sabc)
++  }
++  var abc = orient(a, b, c)
++  if(abc > 0) {
++    if(bcd > 0 && orient(a, b, d) > 0) {
++      return 1
++    }
++    return -1
++  } else if(abc < 0) {
++    if(bcd > 0 || orient(a, b, d) > 0) {
++      return 1
++    }
++    return -1
++  } else {
++    var abd = orient(a, b, d)
++    if(abd > 0) {
++      return 1
++    } else {
++      if(testInterior(a, b, c)) {
++        return 1
++      } else {
++        return -1
++      }
++    }
++  }
++}
++},{"robust-orientation":219,"robust-product":220,"robust-sum":224,"signum":225,"two-sum":245}],63:[function(require,module,exports){
++module.exports = compareCells
+ 
+-//Data for box statck
+-var INIT_CAPACITY = 1024
+-var BOX_ISTACK  = pool.mallocInt32(INIT_CAPACITY)
+-var BOX_DSTACK  = pool.mallocDouble(INIT_CAPACITY)
++var min = Math.min
+ 
+-//Initialize iterative loop queue
+-function iterInit(d, count) {
+-  var levels = (8 * bits.log2(count+1) * (d+1))|0
+-  var maxInts = bits.nextPow2(IFRAME_SIZE*levels)
+-  if(BOX_ISTACK.length < maxInts) {
+-    pool.free(BOX_ISTACK)
+-    BOX_ISTACK = pool.mallocInt32(maxInts)
++function compareInt(a, b) {
++  return a - b
++}
++
++function compareCells(a, b) {
++  var n = a.length
++    , t = a.length - b.length
++  if(t) {
++    return t
+   }
+-  var maxDoubles = bits.nextPow2(DFRAME_SIZE*levels)
+-  if(BOX_DSTACK < maxDoubles) {
+-    pool.free(BOX_DSTACK)
+-    BOX_DSTACK = pool.mallocDouble(maxDoubles)
++  switch(n) {
++    case 0:
++      return 0
++    case 1:
++      return a[0] - b[0]
++    case 2:
++      return (a[0]+a[1]-b[0]-b[1]) ||
++             min(a[0],a[1]) - min(b[0],b[1])
++    case 3:
++      var l1 = a[0]+a[1]
++        , m1 = b[0]+b[1]
++      t = l1+a[2] - (m1+b[2])
++      if(t) {
++        return t
++      }
++      var l0 = min(a[0], a[1])
++        , m0 = min(b[0], b[1])
++      return min(l0, a[2]) - min(m0, b[2]) ||
++             min(l0+a[2], l1) - min(m0+b[2], m1)
++    case 4:
++      var aw=a[0], ax=a[1], ay=a[2], az=a[3]
++        , bw=b[0], bx=b[1], by=b[2], bz=b[3]
++      return (aw+ax+ay+az)-(bw+bx+by+bz) ||
++             min(aw,ax,ay,az)-min(bw,bx,by,bz,bw) ||
++             min(aw+ax,aw+ay,aw+az,ax+ay,ax+az,ay+az) -
++               min(bw+bx,bw+by,bw+bz,bx+by,bx+bz,by+bz) ||
++             min(aw+ax+ay,aw+ax+az,aw+ay+az,ax+ay+az) -
++               min(bw+bx+by,bw+bx+bz,bw+by+bz,bx+by+bz)
++    default:
++      var as = a.slice().sort(compareInt)
++      var bs = b.slice().sort(compareInt)
++      for(var i=0; i<n; ++i) {
++        t = as[i] - bs[i]
++        if(t) {
++          return t
++        }
++      }
++      return 0
+   }
+ }
+ 
+-//Append item to queue
+-function iterPush(ptr,
+-  axis, 
+-  redStart, redEnd, 
+-  blueStart, blueEnd, 
+-  state, 
+-  lo, hi) {
++},{}],64:[function(require,module,exports){
++'use strict'
+ 
+-  var iptr = IFRAME_SIZE * ptr
+-  BOX_ISTACK[iptr]   = axis
+-  BOX_ISTACK[iptr+1] = redStart
+-  BOX_ISTACK[iptr+2] = redEnd
+-  BOX_ISTACK[iptr+3] = blueStart
+-  BOX_ISTACK[iptr+4] = blueEnd
+-  BOX_ISTACK[iptr+5] = state
++var compareCells = require('compare-cell')
++var parity = require('cell-orientation')
+ 
+-  var dptr = DFRAME_SIZE * ptr
+-  BOX_DSTACK[dptr]   = lo
+-  BOX_DSTACK[dptr+1] = hi
++module.exports = compareOrientedCells
++
++function compareOrientedCells(a, b) {
++  return compareCells(a, b) || parity(a) - parity(b)
+ }
+ 
+-//Special case:  Intersect single point with list of intervals
+-function onePointPartial(
+-  d, axis, visit, flip,
+-  redStart, redEnd, red, redIndex,
+-  blueOffset, blue, blueId) {
++},{"cell-orientation":54,"compare-cell":63}],65:[function(require,module,exports){
++"use strict"
+ 
+-  var elemSize = 2 * d
+-  var bluePtr  = blueOffset * elemSize
+-  var blueX    = blue[bluePtr + axis]
++var convexHull1d = require('./lib/ch1d')
++var convexHull2d = require('./lib/ch2d')
++var convexHullnd = require('./lib/chnd')
+ 
+-red_loop:
+-  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
+-    var r0 = red[redPtr+axis]
+-    var r1 = red[redPtr+axis+d]
+-    if(blueX < r0 || r1 < blueX) {
+-      continue
+-    }
+-    if(flip && blueX === r0) {
+-      continue
+-    }
+-    var redId = redIndex[i]
+-    for(var j=axis+1; j<d; ++j) {
+-      var r0 = red[redPtr+j]
+-      var r1 = red[redPtr+j+d]
+-      var b0 = blue[bluePtr+j]
+-      var b1 = blue[bluePtr+j+d]
+-      if(r1 < b0 || b1 < r0) {
+-        continue red_loop
+-      }
+-    }
+-    var retval
+-    if(flip) {
+-      retval = visit(blueId, redId)
+-    } else {
+-      retval = visit(redId, blueId)
+-    }
+-    if(retval !== void 0) {
+-      return retval
+-    }
++module.exports = convexHull
++
++function convexHull(points) {
++  var n = points.length
++  if(n === 0) {
++    return []
++  } else if(n === 1) {
++    return [[0]]
++  }
++  var d = points[0].length
++  if(d === 0) {
++    return []
++  } else if(d === 1) {
++    return convexHull1d(points)
++  } else if(d === 2) {
++    return convexHull2d(points)
+   }
++  return convexHullnd(points, d)
+ }
++},{"./lib/ch1d":66,"./lib/ch2d":67,"./lib/chnd":68}],66:[function(require,module,exports){
++"use strict"
+ 
+-//Special case:  Intersect one point with list of intervals
+-function onePointFull(
+-  d, axis, visit,
+-  redStart, redEnd, red, redIndex,
+-  blueOffset, blue, blueId) {
+-
+-  var elemSize = 2 * d
+-  var bluePtr  = blueOffset * elemSize
+-  var blueX    = blue[bluePtr + axis]
++module.exports = convexHull1d
+ 
+-red_loop:
+-  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
+-    var redId = redIndex[i]
+-    if(redId === blueId) {
+-      continue
+-    }
+-    var r0 = red[redPtr+axis]
+-    var r1 = red[redPtr+axis+d]
+-    if(blueX < r0 || r1 < blueX) {
+-      continue
+-    }
+-    for(var j=axis+1; j<d; ++j) {
+-      var r0 = red[redPtr+j]
+-      var r1 = red[redPtr+j+d]
+-      var b0 = blue[bluePtr+j]
+-      var b1 = blue[bluePtr+j+d]
+-      if(r1 < b0 || b1 < r0) {
+-        continue red_loop
+-      }
++function convexHull1d(points) {
++  var lo = 0
++  var hi = 0
++  for(var i=1; i<points.length; ++i) {
++    if(points[i][0] < points[lo][0]) {
++      lo = i
+     }
+-    var retval = visit(redId, blueId)
+-    if(retval !== void 0) {
+-      return retval
++    if(points[i][0] > points[hi][0]) {
++      hi = i
+     }
+   }
++  if(lo < hi) {
++    return [[lo], [hi]]
++  } else if(lo > hi) {
++    return [[hi], [lo]]
++  } else {
++    return [[lo]]
++  }
+ }
++},{}],67:[function(require,module,exports){
++'use strict'
+ 
+-//The main box intersection routine
+-function boxIntersectIter(
+-  d, visit, initFull,
+-  xSize, xBoxes, xIndex,
+-  ySize, yBoxes, yIndex) {
+-
+-  //Reserve memory for stack
+-  iterInit(d, xSize + ySize)
++module.exports = convexHull2D
+ 
+-  var top  = 0
+-  var elemSize = 2 * d
+-  var retval
++var monotoneHull = require('monotone-convex-hull-2d')
+ 
+-  iterPush(top++,
+-      0,
+-      0, xSize,
+-      0, ySize,
+-      initFull ? 16 : 0, 
+-      -Infinity, Infinity)
+-  if(!initFull) {
+-    iterPush(top++,
+-      0,
+-      0, ySize,
+-      0, xSize,
+-      1, 
+-      -Infinity, Infinity)
++function convexHull2D(points) {
++  var hull = monotoneHull(points)
++  var h = hull.length
++  if(h <= 2) {
++    return []
++  }
++  var edges = new Array(h)
++  var a = hull[h-1]
++  for(var i=0; i<h; ++i) {
++    var b = hull[i]
++    edges[i] = [a,b]
++    a = b
+   }
++  return edges
++}
+ 
+-  while(top > 0) {
+-    top  -= 1
++},{"monotone-convex-hull-2d":176}],68:[function(require,module,exports){
++'use strict'
+ 
+-    var iptr = top * IFRAME_SIZE
+-    var axis      = BOX_ISTACK[iptr]
+-    var redStart  = BOX_ISTACK[iptr+1]
+-    var redEnd    = BOX_ISTACK[iptr+2]
+-    var blueStart = BOX_ISTACK[iptr+3]
+-    var blueEnd   = BOX_ISTACK[iptr+4]
+-    var state     = BOX_ISTACK[iptr+5]
+-
+-    var dptr = top * DFRAME_SIZE
+-    var lo        = BOX_DSTACK[dptr]
+-    var hi        = BOX_DSTACK[dptr+1]
+-
+-    //Unpack state info
+-    var flip      = (state & 1)
+-    var full      = !!(state & 16)
+-
+-    //Unpack indices
+-    var red       = xBoxes
+-    var redIndex  = xIndex
+-    var blue      = yBoxes
+-    var blueIndex = yIndex
+-    if(flip) {
+-      red         = yBoxes
+-      redIndex    = yIndex
+-      blue        = xBoxes
+-      blueIndex   = xIndex
+-    }
++module.exports = convexHullnD
+ 
+-    if(state & 2) {
+-      redEnd = partitionStartLessThan(
+-        d, axis,
+-        redStart, redEnd, red, redIndex,
+-        hi)
+-      if(redStart >= redEnd) {
+-        continue
+-      }
+-    }
+-    if(state & 4) {
+-      redStart = partitionEndLessThanEqual(
+-        d, axis,
+-        redStart, redEnd, red, redIndex,
+-        lo)
+-      if(redStart >= redEnd) {
+-        continue
+-      }
+-    }
+-    
+-    var redCount  = redEnd  - redStart
+-    var blueCount = blueEnd - blueStart
++var ich = require('incremental-convex-hull')
++var aff = require('affine-hull')
+ 
+-    if(full) {
+-      if(d * redCount * (redCount + blueCount) < SCAN_COMPLETE_CUTOFF) {
+-        retval = sweep.scanComplete(
+-          d, axis, visit, 
+-          redStart, redEnd, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      }
+-    } else {
+-      if(d * Math.min(redCount, blueCount) < BRUTE_FORCE_CUTOFF) {
+-        //If input small, then use brute force
+-        retval = bruteForcePartial(
+-            d, axis, visit, flip,
+-            redStart,  redEnd,  red,  redIndex,
+-            blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      } else if(d * redCount * blueCount < SCAN_CUTOFF) {
+-        //If input medium sized, then use sweep and prune
+-        retval = sweep.scanBipartite(
+-          d, axis, visit, flip, 
+-          redStart, redEnd, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      }
++function permute(points, front) {
++  var n = points.length
++  var npoints = new Array(n)
++  for(var i=0; i<front.length; ++i) {
++    npoints[i] = points[front[i]]
++  }
++  var ptr = front.length
++  for(var i=0; i<n; ++i) {
++    if(front.indexOf(i) < 0) {
++      npoints[ptr++] = points[i]
+     }
+-    
+-    //First, find all red intervals whose interior contains (lo,hi)
+-    var red0 = partitionInteriorContainsInterval(
+-      d, axis, 
+-      redStart, redEnd, red, redIndex,
+-      lo, hi)
+-
+-    //Lower dimensional case
+-    if(redStart < red0) {
++  }
++  return npoints
++}
+ 
+-      if(d * (red0 - redStart) < BRUTE_FORCE_CUTOFF) {
+-        //Special case for small inputs: use brute force
+-        retval = bruteForceFull(
+-          d, axis+1, visit,
+-          redStart, red0, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      } else if(axis === d-2) {
+-        if(flip) {
+-          retval = sweep.sweepBipartite(
+-            d, visit,
+-            blueStart, blueEnd, blue, blueIndex,
+-            redStart, red0, red, redIndex)
+-        } else {
+-          retval = sweep.sweepBipartite(
+-            d, visit,
+-            redStart, red0, red, redIndex,
+-            blueStart, blueEnd, blue, blueIndex)
+-        }
+-        if(retval !== void 0) {
+-          return retval
+-        }
++function invPermute(cells, front) {
++  var nc = cells.length
++  var nf = front.length
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      var x = c[j]
++      if(x < nf) {
++        c[j] = front[x]
+       } else {
+-        iterPush(top++,
+-          axis+1,
+-          redStart, red0,
+-          blueStart, blueEnd,
+-          flip,
+-          -Infinity, Infinity)
+-        iterPush(top++,
+-          axis+1,
+-          blueStart, blueEnd,
+-          redStart, red0,
+-          flip^1,
+-          -Infinity, Infinity)
+-      }
+-    }
+-
+-    //Divide and conquer phase
+-    if(red0 < redEnd) {
+-
+-      //Cut blue into 3 parts:
+-      //
+-      //  Points < mid point
+-      //  Points = mid point
+-      //  Points > mid point
+-      //
+-      var blue0 = findMedian(
+-        d, axis, 
+-        blueStart, blueEnd, blue, blueIndex)
+-      var mid = blue[elemSize * blue0 + axis]
+-      var blue1 = partitionStartEqual(
+-        d, axis,
+-        blue0, blueEnd, blue, blueIndex,
+-        mid)
+-
+-      //Right case
+-      if(blue1 < blueEnd) {
+-        iterPush(top++,
+-          axis,
+-          red0, redEnd,
+-          blue1, blueEnd,
+-          (flip|4) + (full ? 16 : 0),
+-          mid, hi)
+-      }
+-
+-      //Left case
+-      if(blueStart < blue0) {
+-        iterPush(top++,
+-          axis,
+-          red0, redEnd,
+-          blueStart, blue0,
+-          (flip|2) + (full ? 16 : 0),
+-          lo, mid)
+-      }
+-
+-      //Center case (the hard part)
+-      if(blue0 + 1 === blue1) {
+-        //Optimization: Range with exactly 1 point, use a brute force scan
+-        if(full) {
+-          retval = onePointFull(
+-            d, axis, visit,
+-            red0, redEnd, red, redIndex,
+-            blue0, blue, blueIndex[blue0])
+-        } else {
+-          retval = onePointPartial(
+-            d, axis, visit, flip,
+-            red0, redEnd, red, redIndex,
+-            blue0, blue, blueIndex[blue0])
+-        }
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      } else if(blue0 < blue1) {
+-        var red1
+-        if(full) {
+-          //If full intersection, need to handle special case
+-          red1 = partitionContainsPoint(
+-            d, axis,
+-            red0, redEnd, red, redIndex,
+-            mid)
+-          if(red0 < red1) {
+-            var redX = partitionStartEqual(
+-              d, axis,
+-              red0, red1, red, redIndex,
+-              mid)
+-            if(axis === d-2) {
+-              //Degenerate sweep intersection:
+-              //  [red0, redX] with [blue0, blue1]
+-              if(red0 < redX) {
+-                retval = sweep.sweepComplete(
+-                  d, visit,
+-                  red0, redX, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-                if(retval !== void 0) {
+-                  return retval
+-                }
+-              }
+-
+-              //Normal sweep intersection:
+-              //  [redX, red1] with [blue0, blue1]
+-              if(redX < red1) {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  redX, red1, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-                if(retval !== void 0) {
+-                  return retval
+-                }
+-              }
+-            } else {
+-              if(red0 < redX) {
+-                iterPush(top++,
+-                  axis+1,
+-                  red0, redX,
+-                  blue0, blue1,
+-                  16,
+-                  -Infinity, Infinity)
+-              }
+-              if(redX < red1) {
+-                iterPush(top++,
+-                  axis+1,
+-                  redX, red1,
+-                  blue0, blue1,
+-                  0,
+-                  -Infinity, Infinity)
+-                iterPush(top++,
+-                  axis+1,
+-                  blue0, blue1,
+-                  redX, red1,
+-                  1,
+-                  -Infinity, Infinity)
+-              }
+-            }
+-          }
+-        } else {
+-          if(flip) {
+-            red1 = partitionContainsPointProper(
+-              d, axis,
+-              red0, redEnd, red, redIndex,
+-              mid)
+-          } else {
+-            red1 = partitionContainsPoint(
+-              d, axis,
+-              red0, redEnd, red, redIndex,
+-              mid)
+-          }
+-          if(red0 < red1) {
+-            if(axis === d-2) {
+-              if(flip) {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  blue0, blue1, blue, blueIndex,
+-                  red0, red1, red, redIndex)
+-              } else {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  red0, red1, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-              }
+-            } else {
+-              iterPush(top++,
+-                axis+1,
+-                red0, red1,
+-                blue0, blue1,
+-                flip,
+-                -Infinity, Infinity)
+-              iterPush(top++,
+-                axis+1,
+-                blue0, blue1,
+-                red0, red1,
+-                flip^1,
+-                -Infinity, Infinity)
+-            }
++        x = x - nf
++        for(var k=0; k<nf; ++k) {
++          if(x >= front[k]) {
++            x += 1
+           }
+         }
++        c[j] = x
+       }
+     }
+   }
++  return cells
+ }
+-},{"./brute":72,"./median":74,"./partition":75,"./sweep":77,"bit-twiddle":38,"typedarray-pool":242}],74:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = findMedian
+-
+-var genPartition = require('./partition')
+-
+-var partitionStartLessThan = genPartition('lo<p0', ['p0'])
+-
+-var PARTITION_THRESHOLD = 8   //Cut off for using insertion sort in findMedian
+ 
+-//Base case for median finding:  Use insertion sort
+-function insertionSort(d, axis, start, end, boxes, ids) {
+-  var elemSize = 2 * d
+-  var boxPtr = elemSize * (start+1) + axis
+-  for(var i=start+1; i<end; ++i, boxPtr+=elemSize) {
+-    var x = boxes[boxPtr]
+-    for(var j=i, ptr=elemSize*(i-1); 
+-        j>start && boxes[ptr+axis] > x; 
+-        --j, ptr-=elemSize) {
+-      //Swap
+-      var aPtr = ptr
+-      var bPtr = ptr+elemSize
+-      for(var k=0; k<elemSize; ++k, ++aPtr, ++bPtr) {
+-        var y = boxes[aPtr]
+-        boxes[aPtr] = boxes[bPtr]
+-        boxes[bPtr] = y
+-      }
+-      var tmp = ids[j]
+-      ids[j] = ids[j-1]
+-      ids[j-1] = tmp
++function convexHullnD(points, d) {
++  try {
++    return ich(points, true)
++  } catch(e) {
++    //If point set is degenerate, try to find a basis and rerun it
++    var ah = aff(points)
++    if(ah.length <= d) {
++      //No basis, no try
++      return []
+     }
++    var npoints = permute(points, ah)
++    var nhull   = ich(npoints, true)
++    return invPermute(nhull, ah)
+   }
+ }
++},{"affine-hull":12,"incremental-convex-hull":165}],69:[function(require,module,exports){
++"use strict"
+ 
+-//Find median using quick select algorithm
+-//  takes O(n) time with high probability
+-function findMedian(d, axis, start, end, boxes, ids) {
+-  if(end <= start+1) {
+-    return start
+-  }
+-
+-  var lo       = start
+-  var hi       = end
+-  var mid      = ((end + start) >>> 1)
+-  var elemSize = 2*d
+-  var pivot    = mid
+-  var value    = boxes[elemSize*mid+axis]
+-  
+-  while(lo < hi) {
+-    if(hi - lo < PARTITION_THRESHOLD) {
+-      insertionSort(d, axis, lo, hi, boxes, ids)
+-      value = boxes[elemSize*mid+axis]
+-      break
+-    }
+-    
+-    //Select pivot using median-of-3
+-    var count  = hi - lo
+-    var pivot0 = (Math.random()*count+lo)|0
+-    var value0 = boxes[elemSize*pivot0 + axis]
+-    var pivot1 = (Math.random()*count+lo)|0
+-    var value1 = boxes[elemSize*pivot1 + axis]
+-    var pivot2 = (Math.random()*count+lo)|0
+-    var value2 = boxes[elemSize*pivot2 + axis]
+-    if(value0 <= value1) {
+-      if(value2 >= value1) {
+-        pivot = pivot1
+-        value = value1
+-      } else if(value0 >= value2) {
+-        pivot = pivot0
+-        value = value0
+-      } else {
+-        pivot = pivot2
+-        value = value2
+-      }
+-    } else {
+-      if(value1 >= value2) {
+-        pivot = pivot1
+-        value = value1
+-      } else if(value2 >= value0) {
+-        pivot = pivot0
+-        value = value0
+-      } else {
+-        pivot = pivot2
+-        value = value2
+-      }
+-    }
+-
+-    //Swap pivot to end of array
+-    var aPtr = elemSize * (hi-1)
+-    var bPtr = elemSize * pivot
+-    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
+-      var x = boxes[aPtr]
+-      boxes[aPtr] = boxes[bPtr]
+-      boxes[bPtr] = x
+-    }
+-    var y = ids[hi-1]
+-    ids[hi-1] = ids[pivot]
+-    ids[pivot] = y
+-
+-    //Partition using pivot
+-    pivot = partitionStartLessThan(
+-      d, axis, 
+-      lo, hi-1, boxes, ids,
+-      value)
+-
+-    //Swap pivot back
+-    var aPtr = elemSize * (hi-1)
+-    var bPtr = elemSize * pivot
+-    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
+-      var x = boxes[aPtr]
+-      boxes[aPtr] = boxes[bPtr]
+-      boxes[bPtr] = x
++function dcubicHermite(p0, v0, p1, v1, t, f) {
++  var dh00 = 6*t*t-6*t,
++      dh10 = 3*t*t-4*t + 1,
++      dh01 = -6*t*t+6*t,
++      dh11 = 3*t*t-2*t
++  if(p0.length) {
++    if(!f) {
++      f = new Array(p0.length)
+     }
+-    var y = ids[hi-1]
+-    ids[hi-1] = ids[pivot]
+-    ids[pivot] = y
+-
+-    //Swap pivot to last pivot
+-    if(mid < pivot) {
+-      hi = pivot-1
+-      while(lo < hi && 
+-        boxes[elemSize*(hi-1)+axis] === value) {
+-        hi -= 1
+-      }
+-      hi += 1
+-    } else if(pivot < mid) {
+-      lo = pivot + 1
+-      while(lo < hi &&
+-        boxes[elemSize*lo+axis] === value) {
+-        lo += 1
+-      }
+-    } else {
+-      break
++    for(var i=p0.length-1; i>=0; --i) {
++      f[i] = dh00*p0[i] + dh10*v0[i] + dh01*p1[i] + dh11*v1[i]
+     }
++    return f
+   }
+-
+-  //Make sure pivot is at start
+-  return partitionStartLessThan(
+-    d, axis, 
+-    start, mid, boxes, ids,
+-    boxes[elemSize*mid+axis])
++  return dh00*p0 + dh10*v0 + dh01*p1[i] + dh11*v1
+ }
+-},{"./partition":75}],75:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = genPartition
+-
+-var code = 'for(var j=2*a,k=j*c,l=k,m=c,n=b,o=a+b,p=c;d>p;++p,k+=j){var _;if($)if(m===p)m+=1,l+=j;else{for(var s=0;j>s;++s){var t=e[k+s];e[k+s]=e[l],e[l++]=t}var u=f[p];f[p]=f[m],f[m++]=u}}return m'
+ 
+-function genPartition(predicate, args) {
+-  var fargs ='abcdef'.split('').concat(args)
+-  var reads = []
+-  if(predicate.indexOf('lo') >= 0) {
+-    reads.push('lo=e[k+n]')
+-  }
+-  if(predicate.indexOf('hi') >= 0) {
+-    reads.push('hi=e[k+o]')
++function cubicHermite(p0, v0, p1, v1, t, f) {
++  var ti  = (t-1), t2 = t*t, ti2 = ti*ti,
++      h00 = (1+2*t)*ti2,
++      h10 = t*ti2,
++      h01 = t2*(3-2*t),
++      h11 = t2*ti
++  if(p0.length) {
++    if(!f) {
++      f = new Array(p0.length)
++    }
++    for(var i=p0.length-1; i>=0; --i) {
++      f[i] = h00*p0[i] + h10*v0[i] + h01*p1[i] + h11*v1[i]
++    }
++    return f
+   }
+-  fargs.push(
+-    code.replace('_', reads.join())
+-        .replace('$', predicate))
+-  return Function.apply(void 0, fargs)
++  return h00*p0 + h10*v0 + h01*p1 + h11*v1
+ }
+-},{}],76:[function(require,module,exports){
+-'use strict';
+-
+-//This code is extracted from ndarray-sort
+-//It is inlined here as a temporary workaround
+ 
+-module.exports = wrapper;
+-
+-var INSERT_SORT_CUTOFF = 32
+-
+-function wrapper(data, n0) {
+-  if (n0 <= 4*INSERT_SORT_CUTOFF) {
+-    insertionSort(0, n0 - 1, data);
+-  } else {
+-    quickSort(0, n0 - 1, data);
+-  }
+-}
+-
+-function insertionSort(left, right, data) {
+-  var ptr = 2*(left+1)
+-  for(var i=left+1; i<=right; ++i) {
+-    var a = data[ptr++]
+-    var b = data[ptr++]
+-    var j = i
+-    var jptr = ptr-2
+-    while(j-- > left) {
+-      var x = data[jptr-2]
+-      var y = data[jptr-1]
+-      if(x < a) {
+-        break
+-      } else if(x === a && y < b) {
+-        break
+-      }
+-      data[jptr]   = x
+-      data[jptr+1] = y
+-      jptr -= 2
+-    }
+-    data[jptr]   = a
+-    data[jptr+1] = b
+-  }
+-}
+-
+-function swap(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  var x = data[i]
+-  var y = data[i+1]
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-  data[j] = x
+-  data[j+1] = y
+-}
+-
+-function move(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-}
+-
+-function rotate(i, j, k, data) {
+-  i *= 2
+-  j *= 2
+-  k *= 2
+-  var x = data[i]
+-  var y = data[i+1]
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-  data[j] = data[k]
+-  data[j+1] = data[k+1]
+-  data[k] = x
+-  data[k+1] = y
+-}
+-
+-function shufflePivot(i, j, px, py, data) {
+-  i *= 2
+-  j *= 2
+-  data[i] = data[j]
+-  data[j] = px
+-  data[i+1] = data[j+1]
+-  data[j+1] = py
+-}
+-
+-function compare(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  var x = data[i],
+-      y = data[j]
+-  if(x < y) {
+-    return false
+-  } else if(x === y) {
+-    return data[i+1] > data[j+1]
+-  }
+-  return true
+-}
+-
+-function comparePivot(i, y, b, data) {
+-  i *= 2
+-  var x = data[i]
+-  if(x < y) {
+-    return true
+-  } else if(x === y) {
+-    return data[i+1] < b
+-  }
+-  return false
+-}
+-
+-function quickSort(left, right, data) {
+-  var sixth = (right - left + 1) / 6 | 0, 
+-      index1 = left + sixth, 
+-      index5 = right - sixth, 
+-      index3 = left + right >> 1, 
+-      index2 = index3 - sixth, 
+-      index4 = index3 + sixth, 
+-      el1 = index1, 
+-      el2 = index2, 
+-      el3 = index3, 
+-      el4 = index4, 
+-      el5 = index5, 
+-      less = left + 1, 
+-      great = right - 1, 
+-      tmp = 0
+-  if(compare(el1, el2, data)) {
+-    tmp = el1
+-    el1 = el2
+-    el2 = tmp
+-  }
+-  if(compare(el4, el5, data)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el1, el3, data)) {
+-    tmp = el1
+-    el1 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el2, el3, data)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el1, el4, data)) {
+-    tmp = el1
+-    el1 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el3, el4, data)) {
+-    tmp = el3
+-    el3 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el2, el5, data)) {
+-    tmp = el2
+-    el2 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el2, el3, data)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el4, el5, data)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
+-
+-  var pivot1X = data[2*el2]
+-  var pivot1Y = data[2*el2+1]
+-  var pivot2X = data[2*el4]
+-  var pivot2Y = data[2*el4+1]
+-
+-  var ptr0 = 2 * el1;
+-  var ptr2 = 2 * el3;
+-  var ptr4 = 2 * el5;
+-  var ptr5 = 2 * index1;
+-  var ptr6 = 2 * index3;
+-  var ptr7 = 2 * index5;
+-  for (var i1 = 0; i1 < 2; ++i1) {
+-    var x = data[ptr0+i1];
+-    var y = data[ptr2+i1];
+-    var z = data[ptr4+i1];
+-    data[ptr5+i1] = x;
+-    data[ptr6+i1] = y;
+-    data[ptr7+i1] = z;
+-  }
+-
+-  move(index2, left, data)
+-  move(index4, right, data)
+-  for (var k = less; k <= great; ++k) {
+-    if (comparePivot(k, pivot1X, pivot1Y, data)) {
+-      if (k !== less) {
+-        swap(k, less, data)
+-      }
+-      ++less;
+-    } else {
+-      if (!comparePivot(k, pivot2X, pivot2Y, data)) {
+-        while (true) {
+-          if (!comparePivot(great, pivot2X, pivot2Y, data)) {
+-            if (--great < k) {
+-              break;
+-            }
+-            continue;
+-          } else {
+-            if (comparePivot(great, pivot1X, pivot1Y, data)) {
+-              rotate(k, less, great, data)
+-              ++less;
+-              --great;
+-            } else {
+-              swap(k, great, data)
+-              --great;
+-            }
+-            break;
+-          }
+-        }
+-      }
+-    }
+-  }
+-  shufflePivot(left, less-1, pivot1X, pivot1Y, data)
+-  shufflePivot(right, great+1, pivot2X, pivot2Y, data)
+-  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
+-    insertionSort(left, less - 2, data);
+-  } else {
+-    quickSort(left, less - 2, data);
+-  }
+-  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
+-    insertionSort(great + 2, right, data);
+-  } else {
+-    quickSort(great + 2, right, data);
+-  }
+-  if (great - less <= INSERT_SORT_CUTOFF) {
+-    insertionSort(less, great, data);
+-  } else {
+-    quickSort(less, great, data);
+-  }
+-}
+-},{}],77:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = {
+-  init:           sqInit,
+-  sweepBipartite: sweepBipartite,
+-  sweepComplete:  sweepComplete,
+-  scanBipartite:  scanBipartite,
+-  scanComplete:   scanComplete
+-}
+-
+-var pool  = require('typedarray-pool')
+-var bits  = require('bit-twiddle')
+-var isort = require('./sort')
+-
+-//Flag for blue
+-var BLUE_FLAG = (1<<28)
+-
+-//1D sweep event queue stuff (use pool to save space)
+-var INIT_CAPACITY      = 1024
+-var RED_SWEEP_QUEUE    = pool.mallocInt32(INIT_CAPACITY)
+-var RED_SWEEP_INDEX    = pool.mallocInt32(INIT_CAPACITY)
+-var BLUE_SWEEP_QUEUE   = pool.mallocInt32(INIT_CAPACITY)
+-var BLUE_SWEEP_INDEX   = pool.mallocInt32(INIT_CAPACITY)
+-var COMMON_SWEEP_QUEUE = pool.mallocInt32(INIT_CAPACITY)
+-var COMMON_SWEEP_INDEX = pool.mallocInt32(INIT_CAPACITY)
+-var SWEEP_EVENTS       = pool.mallocDouble(INIT_CAPACITY * 8)
+-
+-//Reserves memory for the 1D sweep data structures
+-function sqInit(count) {
+-  var rcount = bits.nextPow2(count)
+-  if(RED_SWEEP_QUEUE.length < rcount) {
+-    pool.free(RED_SWEEP_QUEUE)
+-    RED_SWEEP_QUEUE = pool.mallocInt32(rcount)
+-  }
+-  if(RED_SWEEP_INDEX.length < rcount) {
+-    pool.free(RED_SWEEP_INDEX)
+-    RED_SWEEP_INDEX = pool.mallocInt32(rcount)
+-  }
+-  if(BLUE_SWEEP_QUEUE.length < rcount) {
+-    pool.free(BLUE_SWEEP_QUEUE)
+-    BLUE_SWEEP_QUEUE = pool.mallocInt32(rcount)
+-  }
+-  if(BLUE_SWEEP_INDEX.length < rcount) {
+-    pool.free(BLUE_SWEEP_INDEX)
+-    BLUE_SWEEP_INDEX = pool.mallocInt32(rcount)
+-  }
+-  if(COMMON_SWEEP_QUEUE.length < rcount) {
+-    pool.free(COMMON_SWEEP_QUEUE)
+-    COMMON_SWEEP_QUEUE = pool.mallocInt32(rcount)
+-  }
+-  if(COMMON_SWEEP_INDEX.length < rcount) {
+-    pool.free(COMMON_SWEEP_INDEX)
+-    COMMON_SWEEP_INDEX = pool.mallocInt32(rcount)
+-  }
+-  var eventLength = 8 * rcount
+-  if(SWEEP_EVENTS.length < eventLength) {
+-    pool.free(SWEEP_EVENTS)
+-    SWEEP_EVENTS = pool.mallocDouble(eventLength)
+-  }
+-}
+-
+-//Remove an item from the active queue in O(1)
+-function sqPop(queue, index, count, item) {
+-  var idx = index[item]
+-  var top = queue[count-1]
+-  queue[idx] = top
+-  index[top] = idx
+-}
+-
+-//Insert an item into the active queue in O(1)
+-function sqPush(queue, index, count, item) {
+-  queue[count] = item
+-  index[item]  = count
+-}
+-
+-//Recursion base case: use 1D sweep algorithm
+-function sweepBipartite(
+-    d, visit,
+-    redStart,  redEnd, red, redIndex,
+-    blueStart, blueEnd, blue, blueIndex) {
+-
+-  //store events as pairs [coordinate, idx]
+-  //
+-  //  red create:  -(idx+1)
+-  //  red destroy: idx
+-  //  blue create: -(idx+BLUE_FLAG)
+-  //  blue destroy: idx+BLUE_FLAG
+-  //
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = d-1
+-  var iend     = elemSize-1
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = redIndex[i]
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -(idx+1)
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = blueIndex[i]+BLUE_FLAG
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive  = 0
+-  var blueActive = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e >= BLUE_FLAG) {
+-      //blue destroy event
+-      e = (e-BLUE_FLAG)|0
+-      sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, e)
+-    } else if(e >= 0) {
+-      //red destroy event
+-      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e)
+-    } else if(e <= -BLUE_FLAG) {
+-      //blue create event
+-      e = (-e-BLUE_FLAG)|0
+-      for(var j=0; j<redActive; ++j) {
+-        var retval = visit(RED_SWEEP_QUEUE[j], e)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      }
+-      sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, e)
+-    } else {
+-      //red create event
+-      e = (-e-1)|0
+-      for(var j=0; j<blueActive; ++j) {
+-        var retval = visit(e, BLUE_SWEEP_QUEUE[j])
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      }
+-      sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, e)
+-    }
+-  }
+-}
+-
+-//Complete sweep
+-function sweepComplete(d, visit, 
+-  redStart, redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = d-1
+-  var iend     = elemSize-1
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = (redIndex[i]+1)<<1
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = (blueIndex[i]+1)<<1
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = (-idx)|1
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx|1
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  var blueActive   = 0
+-  var commonActive = 0
+-  for(var i=0; i<n; ++i) {
+-    var e     = SWEEP_EVENTS[2*i+1]|0
+-    var color = e&1
+-    if(i < n-1 && (e>>1) === (SWEEP_EVENTS[2*i+3]>>1)) {
+-      color = 2
+-      i += 1
+-    }
+-    
+-    if(e < 0) {
+-      //Create event
+-      var id = -(e>>1) - 1
+-
+-      //Intersect with common
+-      for(var j=0; j<commonActive; ++j) {
+-        var retval = visit(COMMON_SWEEP_QUEUE[j], id)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      }
+-
+-      if(color !== 0) {
+-        //Intersect with red
+-        for(var j=0; j<redActive; ++j) {
+-          var retval = visit(RED_SWEEP_QUEUE[j], id)
+-          if(retval !== void 0) {
+-            return retval
+-          }
+-        }
+-      }
+-
+-      if(color !== 1) {
+-        //Intersect with blue
+-        for(var j=0; j<blueActive; ++j) {
+-          var retval = visit(BLUE_SWEEP_QUEUE[j], id)
+-          if(retval !== void 0) {
+-            return retval
+-          }
+-        }
+-      }
+-
+-      if(color === 0) {
+-        //Red
+-        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, id)
+-      } else if(color === 1) {
+-        //Blue
+-        sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, id)
+-      } else if(color === 2) {
+-        //Both
+-        sqPush(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive++, id)
+-      }
+-    } else {
+-      //Destroy event
+-      var id = (e>>1) - 1
+-      if(color === 0) {
+-        //Red
+-        sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, id)
+-      } else if(color === 1) {
+-        //Blue
+-        sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, id)
+-      } else if(color === 2) {
+-        //Both
+-        sqPop(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive--, id)
+-      }
+-    }
+-  }
+-}
+-
+-//Sweep and prune/scanline algorithm:
+-//  Scan along axis, detect intersections
+-//  Brute force all boxes along axis
+-function scanBipartite(
+-  d, axis, visit, flip,
+-  redStart,  redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-  
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = axis
+-  var iend     = axis+d
+-
+-  var redShift  = 1
+-  var blueShift = 1
+-  if(flip) {
+-    blueShift = BLUE_FLAG
+-  } else {
+-    redShift  = BLUE_FLAG
+-  }
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = i + redShift
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = i + blueShift
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e < 0) {
+-      var idx   = -e
+-      var isRed = false
+-      if(idx >= BLUE_FLAG) {
+-        isRed = !flip
+-        idx -= BLUE_FLAG 
+-      } else {
+-        isRed = !!flip
+-        idx -= 1
+-      }
+-      if(isRed) {
+-        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, idx)
+-      } else {
+-        var blueId  = blueIndex[idx]
+-        var bluePtr = elemSize * idx
+-        
+-        var b0 = blue[bluePtr+axis+1]
+-        var b1 = blue[bluePtr+axis+1+d]
+-
+-red_loop:
+-        for(var j=0; j<redActive; ++j) {
+-          var oidx   = RED_SWEEP_QUEUE[j]
+-          var redPtr = elemSize * oidx
+-
+-          if(b1 < red[redPtr+axis+1] || 
+-             red[redPtr+axis+1+d] < b0) {
+-            continue
+-          }
+-
+-          for(var k=axis+2; k<d; ++k) {
+-            if(blue[bluePtr + k + d] < red[redPtr + k] || 
+-               red[redPtr + k + d] < blue[bluePtr + k]) {
+-              continue red_loop
+-            }
+-          }
+-
+-          var redId  = redIndex[oidx]
+-          var retval
+-          if(flip) {
+-            retval = visit(blueId, redId)
+-          } else {
+-            retval = visit(redId, blueId)
+-          }
+-          if(retval !== void 0) {
+-            return retval 
+-          }
+-        }
+-      }
+-    } else {
+-      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e - redShift)
+-    }
+-  }
+-}
+-
+-function scanComplete(
+-  d, axis, visit,
+-  redStart,  redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = axis
+-  var iend     = axis+d
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = i + BLUE_FLAG
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = i + 1
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e < 0) {
+-      var idx   = -e
+-      if(idx >= BLUE_FLAG) {
+-        RED_SWEEP_QUEUE[redActive++] = idx - BLUE_FLAG
+-      } else {
+-        idx -= 1
+-        var blueId  = blueIndex[idx]
+-        var bluePtr = elemSize * idx
+-
+-        var b0 = blue[bluePtr+axis+1]
+-        var b1 = blue[bluePtr+axis+1+d]
+-
+-red_loop:
+-        for(var j=0; j<redActive; ++j) {
+-          var oidx   = RED_SWEEP_QUEUE[j]
+-          var redId  = redIndex[oidx]
+-
+-          if(redId === blueId) {
+-            break
+-          }
+-
+-          var redPtr = elemSize * oidx
+-          if(b1 < red[redPtr+axis+1] || 
+-            red[redPtr+axis+1+d] < b0) {
+-            continue
+-          }
+-          for(var k=axis+2; k<d; ++k) {
+-            if(blue[bluePtr + k + d] < red[redPtr + k] || 
+-               red[redPtr + k + d]   < blue[bluePtr + k]) {
+-              continue red_loop
+-            }
+-          }
+-
+-          var retval = visit(redId, blueId)
+-          if(retval !== void 0) {
+-            return retval 
+-          }
+-        }
+-      }
+-    } else {
+-      var idx = e - BLUE_FLAG
+-      for(var j=redActive-1; j>=0; --j) {
+-        if(RED_SWEEP_QUEUE[j] === idx) {
+-          for(var k=j+1; k<redActive; ++k) {
+-            RED_SWEEP_QUEUE[k-1] = RED_SWEEP_QUEUE[k]
+-          }
+-          break
+-        }
+-      }
+-      --redActive
+-    }
+-  }
+-}
+-},{"./sort":76,"bit-twiddle":38,"typedarray-pool":242}],78:[function(require,module,exports){
+-(function (Buffer){
+-var hasTypedArrays = false
+-if(typeof Float64Array !== "undefined") {
+-  var DOUBLE_VIEW = new Float64Array(1)
+-    , UINT_VIEW   = new Uint32Array(DOUBLE_VIEW.buffer)
+-  DOUBLE_VIEW[0] = 1.0
+-  hasTypedArrays = true
+-  if(UINT_VIEW[1] === 0x3ff00000) {
+-    //Use little endian
+-    module.exports = function doubleBitsLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return [ UINT_VIEW[0], UINT_VIEW[1] ]
+-    }
+-    function toDoubleLE(lo, hi) {
+-      UINT_VIEW[0] = lo
+-      UINT_VIEW[1] = hi
+-      return DOUBLE_VIEW[0]
+-    }
+-    module.exports.pack = toDoubleLE
+-    function lowUintLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[0]
+-    }
+-    module.exports.lo = lowUintLE
+-    function highUintLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[1]
+-    }
+-    module.exports.hi = highUintLE
+-  } else if(UINT_VIEW[0] === 0x3ff00000) {
+-    //Use big endian
+-    module.exports = function doubleBitsBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return [ UINT_VIEW[1], UINT_VIEW[0] ]
+-    }
+-    function toDoubleBE(lo, hi) {
+-      UINT_VIEW[1] = lo
+-      UINT_VIEW[0] = hi
+-      return DOUBLE_VIEW[0]
+-    }
+-    module.exports.pack = toDoubleBE
+-    function lowUintBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[1]
+-    }
+-    module.exports.lo = lowUintBE
+-    function highUintBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[0]
+-    }
+-    module.exports.hi = highUintBE
+-  } else {
+-    hasTypedArrays = false
+-  }
+-}
+-if(!hasTypedArrays) {
+-  var buffer = new Buffer(8)
+-  module.exports = function doubleBits(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return [ buffer.readUInt32LE(0, true), buffer.readUInt32LE(4, true) ]
+-  }
+-  function toDouble(lo, hi) {
+-    buffer.writeUInt32LE(lo, 0, true)
+-    buffer.writeUInt32LE(hi, 4, true)
+-    return buffer.readDoubleLE(0, true)
+-  }
+-  module.exports.pack = toDouble  
+-  function lowUint(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return buffer.readUInt32LE(0, true)
+-  }
+-  module.exports.lo = lowUint
+-  function highUint(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return buffer.readUInt32LE(4, true)
+-  }
+-  module.exports.hi = highUint
+-}
+-
+-module.exports.sign = function(n) {
+-  return module.exports.hi(n) >>> 31
+-}
+-
+-module.exports.exponent = function(n) {
+-  var b = module.exports.hi(n)
+-  return ((b<<1) >>> 21) - 1023
+-}
+-
+-module.exports.fraction = function(n) {
+-  var lo = module.exports.lo(n)
+-  var hi = module.exports.hi(n)
+-  var b = hi & ((1<<20) - 1)
+-  if(hi & 0x7ff00000) {
+-    b += (1<<20)
+-  }
+-  return [lo, b]
+-}
+-
+-module.exports.denormalized = function(n) {
+-  var hi = module.exports.hi(n)
+-  return !(hi & 0x7ff00000)
+-}
+-}).call(this,require("buffer").Buffer)
+-},{"buffer":39}],79:[function(require,module,exports){
+-"use strict"
+-
+-var doubleBits = require("double-bits")
+-
+-var SMALLEST_DENORM = Math.pow(2, -1074)
+-var UINT_MAX = (-1)>>>0
+-
+-module.exports = nextafter
+-
+-function nextafter(x, y) {
+-  if(isNaN(x) || isNaN(y)) {
+-    return NaN
+-  }
+-  if(x === y) {
+-    return x
+-  }
+-  if(x === 0) {
+-    if(y < 0) {
+-      return -SMALLEST_DENORM
+-    } else {
+-      return SMALLEST_DENORM
+-    }
+-  }
+-  var hi = doubleBits.hi(x)
+-  var lo = doubleBits.lo(x)
+-  if((y > x) === (x > 0)) {
+-    if(lo === UINT_MAX) {
+-      hi += 1
+-      lo = 0
+-    } else {
+-      lo += 1
+-    }
+-  } else {
+-    if(lo === 0) {
+-      lo = UINT_MAX
+-      hi -= 1
+-    } else {
+-      lo -= 1
+-    }
+-  }
+-  return doubleBits.pack(lo, hi)
+-}
+-},{"double-bits":78}],80:[function(require,module,exports){
+-'use strict'
+-
+-var bnadd = require('big-rat/add')
+-
+-module.exports = add
+-
+-function add(a, b) {
+-  var n = a.length
+-  var r = new Array(n)
+-    for(var i=0; i<n; ++i) {
+-    r[i] = bnadd(a[i], b[i])
+-  }
+-  return r
+-}
+-
+-},{"big-rat/add":54}],81:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = float2rat
+-
+-var rat = require('big-rat')
+-
+-function float2rat(v) {
+-  var result = new Array(v.length)
+-  for(var i=0; i<v.length; ++i) {
+-    result[i] = rat(v[i])
+-  }
+-  return result
+-}
+-
+-},{"big-rat":57}],82:[function(require,module,exports){
+-'use strict'
+-
+-var rat = require('big-rat')
+-var mul = require('big-rat/mul')
+-
+-module.exports = muls
+-
+-function muls(a, x) {
+-  var s = rat(x)
+-  var n = a.length
+-  var r = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    r[i] = mul(a[i], s)
+-  }
+-  return r
+-}
+-
+-},{"big-rat":57,"big-rat/mul":66}],83:[function(require,module,exports){
+-'use strict'
+-
+-var bnsub = require('big-rat/sub')
+-
+-module.exports = sub
+-
+-function sub(a, b) {
+-  var n = a.length
+-  var r = new Array(n)
+-    for(var i=0; i<n; ++i) {
+-    r[i] = bnsub(a[i], b[i])
+-  }
+-  return r
+-}
+-
+-},{"big-rat/sub":69}],84:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = segmentsIntersect
+-
+-var orient = require("robust-orientation")[3]
+-
+-function checkCollinear(a0, a1, b0, b1) {
+-
+-  for(var d=0; d<2; ++d) {
+-    var x0 = a0[d]
+-    var y0 = a1[d]
+-    var l0 = Math.min(x0, y0)
+-    var h0 = Math.max(x0, y0)    
+-
+-    var x1 = b0[d]
+-    var y1 = b1[d]
+-    var l1 = Math.min(x1, y1)
+-    var h1 = Math.max(x1, y1)    
+-
+-    if(h1 < l0 || h0 < l1) {
+-      return false
+-    }
+-  }
+-
+-  return true
+-}
+-
+-function segmentsIntersect(a0, a1, b0, b1) {
+-  var x0 = orient(a0, b0, b1)
+-  var y0 = orient(a1, b0, b1)
+-  if((x0 > 0 && y0 > 0) || (x0 < 0 && y0 < 0)) {
+-    return false
+-  }
+-
+-  var x1 = orient(b0, a0, a1)
+-  var y1 = orient(b1, a0, a1)
+-  if((x1 > 0 && y1 > 0) || (x1 < 0 && y1 < 0)) {
+-    return false
+-  }
+-
+-  //Check for degenerate collinear case
+-  if(x0 === 0 && y0 === 0 && x1 === 0 && y1 === 0) {
+-    return checkCollinear(a0, a1, b0, b1)
+-  }
+-
+-  return true
+-}
+-},{"robust-orientation":225}],85:[function(require,module,exports){
+-"use strict"; "use restrict";
+-
+-module.exports = UnionFind;
+-
+-function UnionFind(count) {
+-  this.roots = new Array(count);
+-  this.ranks = new Array(count);
+-  
+-  for(var i=0; i<count; ++i) {
+-    this.roots[i] = i;
+-    this.ranks[i] = 0;
+-  }
+-}
+-
+-var proto = UnionFind.prototype
+-
+-Object.defineProperty(proto, "length", {
+-  "get": function() {
+-    return this.roots.length
+-  }
+-})
+-
+-proto.makeSet = function() {
+-  var n = this.roots.length;
+-  this.roots.push(n);
+-  this.ranks.push(0);
+-  return n;
+-}
+-
+-proto.find = function(x) {
+-  var x0 = x
+-  var roots = this.roots;
+-  while(roots[x] !== x) {
+-    x = roots[x]
+-  }
+-  while(roots[x0] !== x) {
+-    var y = roots[x0]
+-    roots[x0] = x
+-    x0 = y
+-  }
+-  return x;
+-}
+-
+-proto.link = function(x, y) {
+-  var xr = this.find(x)
+-    , yr = this.find(y);
+-  if(xr === yr) {
+-    return;
+-  }
+-  var ranks = this.ranks
+-    , roots = this.roots
+-    , xd    = ranks[xr]
+-    , yd    = ranks[yr];
+-  if(xd < yd) {
+-    roots[xr] = yr;
+-  } else if(yd < xd) {
+-    roots[yr] = xr;
+-  } else {
+-    roots[yr] = xr;
+-    ++ranks[xr];
+-  }
+-}
+-},{}],86:[function(require,module,exports){
+-(function (Buffer){
+-var clone = (function() {
+-'use strict';
+-
+-/**
+- * Clones (copies) an Object using deep copying.
+- *
+- * This function supports circular references by default, but if you are certain
+- * there are no circular references in your object, you can save some CPU time
+- * by calling clone(obj, false).
+- *
+- * Caution: if `circular` is false and `parent` contains circular references,
+- * your program may enter an infinite loop and crash.
+- *
+- * @param `parent` - the object to be cloned
+- * @param `circular` - set to true if the object to be cloned may contain
+- *    circular references. (optional - true by default)
+- * @param `depth` - set to a number if the object is only to be cloned to
+- *    a particular depth. (optional - defaults to Infinity)
+- * @param `prototype` - sets the prototype to be used when cloning an object.
+- *    (optional - defaults to parent prototype).
+-*/
+-function clone(parent, circular, depth, prototype) {
+-  var filter;
+-  if (typeof circular === 'object') {
+-    depth = circular.depth;
+-    prototype = circular.prototype;
+-    filter = circular.filter;
+-    circular = circular.circular
+-  }
+-  // maintain two arrays for circular references, where corresponding parents
+-  // and children have the same index
+-  var allParents = [];
+-  var allChildren = [];
+-
+-  var useBuffer = typeof Buffer != 'undefined';
+-
+-  if (typeof circular == 'undefined')
+-    circular = true;
+-
+-  if (typeof depth == 'undefined')
+-    depth = Infinity;
+-
+-  // recurse this function so we don't reset allParents and allChildren
+-  function _clone(parent, depth) {
+-    // cloning null always returns null
+-    if (parent === null)
+-      return null;
+-
+-    if (depth == 0)
+-      return parent;
+-
+-    var child;
+-    var proto;
+-    if (typeof parent != 'object') {
+-      return parent;
+-    }
+-
+-    if (clone.__isArray(parent)) {
+-      child = [];
+-    } else if (clone.__isRegExp(parent)) {
+-      child = new RegExp(parent.source, __getRegExpFlags(parent));
+-      if (parent.lastIndex) child.lastIndex = parent.lastIndex;
+-    } else if (clone.__isDate(parent)) {
+-      child = new Date(parent.getTime());
+-    } else if (useBuffer && Buffer.isBuffer(parent)) {
+-      child = new Buffer(parent.length);
+-      parent.copy(child);
+-      return child;
+-    } else {
+-      if (typeof prototype == 'undefined') {
+-        proto = Object.getPrototypeOf(parent);
+-        child = Object.create(proto);
+-      }
+-      else {
+-        child = Object.create(prototype);
+-        proto = prototype;
+-      }
+-    }
+-
+-    if (circular) {
+-      var index = allParents.indexOf(parent);
+-
+-      if (index != -1) {
+-        return allChildren[index];
+-      }
+-      allParents.push(parent);
+-      allChildren.push(child);
+-    }
+-
+-    for (var i in parent) {
+-      var attrs;
+-      if (proto) {
+-        attrs = Object.getOwnPropertyDescriptor(proto, i);
+-      }
+-
+-      if (attrs && attrs.set == null) {
+-        continue;
+-      }
+-      child[i] = _clone(parent[i], depth - 1);
+-    }
+-
+-    return child;
+-  }
+-
+-  return _clone(parent, depth);
+-}
+-
+-/**
+- * Simple flat clone using prototype, accepts only objects, usefull for property
+- * override on FLAT configuration object (no nested props).
+- *
+- * USE WITH CAUTION! This may not behave as you wish if you do not know how this
+- * works.
+- */
+-clone.clonePrototype = function clonePrototype(parent) {
+-  if (parent === null)
+-    return null;
+-
+-  var c = function () {};
+-  c.prototype = parent;
+-  return new c();
+-};
+-
+-// private utility functions
+-
+-function __objToStr(o) {
+-  return Object.prototype.toString.call(o);
+-};
+-clone.__objToStr = __objToStr;
+-
+-function __isDate(o) {
+-  return typeof o === 'object' && __objToStr(o) === '[object Date]';
+-};
+-clone.__isDate = __isDate;
+-
+-function __isArray(o) {
+-  return typeof o === 'object' && __objToStr(o) === '[object Array]';
+-};
+-clone.__isArray = __isArray;
+-
+-function __isRegExp(o) {
+-  return typeof o === 'object' && __objToStr(o) === '[object RegExp]';
+-};
+-clone.__isRegExp = __isRegExp;
+-
+-function __getRegExpFlags(re) {
+-  var flags = '';
+-  if (re.global) flags += 'g';
+-  if (re.ignoreCase) flags += 'i';
+-  if (re.multiline) flags += 'm';
+-  return flags;
+-};
+-clone.__getRegExpFlags = __getRegExpFlags;
+-
+-return clone;
+-})();
+-
+-if (typeof module === 'object' && module.exports) {
+-  module.exports = clone;
+-}
+-
+-}).call(this,require("buffer").Buffer)
+-},{"buffer":39}],87:[function(require,module,exports){
+-module.exports={"jet":[{"index":0,"rgb":[0,0,131]},{"index":0.125,"rgb":[0,60,170]},{"index":0.375,"rgb":[5,255,255]},{"index":0.625,"rgb":[255,255,0]},{"index":0.875,"rgb":[250,0,0]},{"index":1,"rgb":[128,0,0]}],"hsv":[{"index":0,"rgb":[255,0,0]},{"index":0.169,"rgb":[253,255,2]},{"index":0.173,"rgb":[247,255,2]},{"index":0.337,"rgb":[0,252,4]},{"index":0.341,"rgb":[0,252,10]},{"index":0.506,"rgb":[1,249,255]},{"index":0.671,"rgb":[2,0,253]},{"index":0.675,"rgb":[8,0,253]},{"index":0.839,"rgb":[255,0,251]},{"index":0.843,"rgb":[255,0,245]},{"index":1,"rgb":[255,0,6]}],"hot":[{"index":0,"rgb":[0,0,0]},{"index":0.3,"rgb":[230,0,0]},{"index":0.6,"rgb":[255,210,0]},{"index":1,"rgb":[255,255,255]}],"cool":[{"index":0,"rgb":[0,255,255]},{"index":1,"rgb":[255,0,255]}],"spring":[{"index":0,"rgb":[255,0,255]},{"index":1,"rgb":[255,255,0]}],"summer":[{"index":0,"rgb":[0,128,102]},{"index":1,"rgb":[255,255,102]}],"autumn":[{"index":0,"rgb":[255,0,0]},{"index":1,"rgb":[255,255,0]}],"winter":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[0,255,128]}],"bone":[{"index":0,"rgb":[0,0,0]},{"index":0.376,"rgb":[84,84,116]},{"index":0.753,"rgb":[169,200,200]},{"index":1,"rgb":[255,255,255]}],"copper":[{"index":0,"rgb":[0,0,0]},{"index":0.804,"rgb":[255,160,102]},{"index":1,"rgb":[255,199,127]}],"greys":[{"index":0,"rgb":[0,0,0]},{"index":1,"rgb":[255,255,255]}],"yignbu":[{"index":0,"rgb":[8,29,88]},{"index":0.125,"rgb":[37,52,148]},{"index":0.25,"rgb":[34,94,168]},{"index":0.375,"rgb":[29,145,192]},{"index":0.5,"rgb":[65,182,196]},{"index":0.625,"rgb":[127,205,187]},{"index":0.75,"rgb":[199,233,180]},{"index":0.875,"rgb":[237,248,217]},{"index":1,"rgb":[255,255,217]}],"greens":[{"index":0,"rgb":[0,68,27]},{"index":0.125,"rgb":[0,109,44]},{"index":0.25,"rgb":[35,139,69]},{"index":0.375,"rgb":[65,171,93]},{"index":0.5,"rgb":[116,196,118]},{"index":0.625,"rgb":[161,217,155]},{"index":0.75,"rgb":[199,233,192]},{"index":0.875,"rgb":[229,245,224]},{"index":1,"rgb":[247,252,245]}],"yiorrd":[{"index":0,"rgb":[128,0,38]},{"index":0.125,"rgb":[189,0,38]},{"index":0.25,"rgb":[227,26,28]},{"index":0.375,"rgb":[252,78,42]},{"index":0.5,"rgb":[253,141,60]},{"index":0.625,"rgb":[254,178,76]},{"index":0.75,"rgb":[254,217,118]},{"index":0.875,"rgb":[255,237,160]},{"index":1,"rgb":[255,255,204]}],"bluered":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[255,0,0]}],"rdbu":[{"index":0,"rgb":[5,10,172]},{"index":0.35,"rgb":[106,137,247]},{"index":0.5,"rgb":[190,190,190]},{"index":0.6,"rgb":[220,170,132]},{"index":0.7,"rgb":[230,145,90]},{"index":1,"rgb":[178,10,28]}],"picnic":[{"index":0,"rgb":[0,0,255]},{"index":0.1,"rgb":[51,153,255]},{"index":0.2,"rgb":[102,204,255]},{"index":0.3,"rgb":[153,204,255]},{"index":0.4,"rgb":[204,204,255]},{"index":0.5,"rgb":[255,255,255]},{"index":0.6,"rgb":[255,204,255]},{"index":0.7,"rgb":[255,153,255]},{"index":0.8,"rgb":[255,102,204]},{"index":0.9,"rgb":[255,102,102]},{"index":1,"rgb":[255,0,0]}],"rainbow":[{"index":0,"rgb":[150,0,90]},{"index":0.125,"rgb":[0,0,200]},{"index":0.25,"rgb":[0,25,255]},{"index":0.375,"rgb":[0,152,255]},{"index":0.5,"rgb":[44,255,150]},{"index":0.625,"rgb":[151,255,0]},{"index":0.75,"rgb":[255,234,0]},{"index":0.875,"rgb":[255,111,0]},{"index":1,"rgb":[255,0,0]}],"portland":[{"index":0,"rgb":[12,51,131]},{"index":0.25,"rgb":[10,136,186]},{"index":0.5,"rgb":[242,211,56]},{"index":0.75,"rgb":[242,143,56]},{"index":1,"rgb":[217,30,30]}],"blackbody":[{"index":0,"rgb":[0,0,0]},{"index":0.2,"rgb":[230,0,0]},{"index":0.4,"rgb":[230,210,0]},{"index":0.7,"rgb":[255,255,255]},{"index":1,"rgb":[160,200,255]}],"earth":[{"index":0,"rgb":[0,0,130]},{"index":0.1,"rgb":[0,180,180]},{"index":0.2,"rgb":[40,210,40]},{"index":0.4,"rgb":[230,230,50]},{"index":0.6,"rgb":[120,70,20]},{"index":1,"rgb":[255,255,255]}],"electric":[{"index":0,"rgb":[0,0,0]},{"index":0.15,"rgb":[30,0,100]},{"index":0.4,"rgb":[120,0,100]},{"index":0.6,"rgb":[160,90,0]},{"index":0.8,"rgb":[230,200,0]},{"index":1,"rgb":[255,250,220]}], "alpha": [{"index":0, "rgb": [255,255,255,0]},{"index":0, "rgb": [255,255,255,1]}]};
+-
+-},{}],88:[function(require,module,exports){
+-/*
+- * Ben Postlethwaite
+- * January 2013
+- * License MIT
+- */
+-'use strict';
+-
+-var at = require('arraytools');
+-var clone = require('clone');
+-var colorScale = require('./colorScales');
+-
+-module.exports = function (spec) {
+-
+-    /*
+-     * Default Options
+-     */
+-    var indicies, rgba, fromrgba, torgba,
+-        nsteps, cmap, colormap, format,
+-        nshades, colors, alpha, index, i,
+-        r = [],
+-        g = [],
+-        b = [],
+-        a = [];
+-
+-    if ( !at.isPlainObject(spec) ) spec = {};
+-
+-    nshades = spec.nshades || 72;
+-    format = spec.format || 'hex';
+-
+-    colormap = spec.colormap;
+-    if (!colormap) colormap = 'jet';
+-
+-    if (typeof colormap === 'string') {
+-        colormap = colormap.toLowerCase();
+-
+-        if (!colorScale[colormap]) {
+-            throw Error(colormap + ' not a supported colorscale');
+-        }
+-
+-        cmap = clone(colorScale[colormap]);
+-
+-    } else if (Array.isArray(colormap)) {
+-        cmap = clone(colormap);
+-
+-    } else {
+-        throw Error('unsupported colormap option', colormap);
+-    }
+-
+-    if (cmap.length > nshades) {
+-        throw new Error(
+-            colormap+' map requires nshades to be at least size '+cmap.length
+-        );
+-    }
+-
+-    if (!Array.isArray(spec.alpha)) {
+-
+-        if (typeof spec.alpha === 'number') {
+-            alpha = [spec.alpha, spec.alpha];
+-
+-        } else {
+-            alpha = [1, 1];
+-        }
+-
+-    } else if (spec.alpha.length !== 2) {
+-        alpha = [1, 1];
+-
+-    } else {
+-        alpha = clone(spec.alpha);
+-    }
+-
+-    /*
+-     * map index points from 0->1 to 0 -> n-1
+-     */
+-    indicies = cmap.map(function(c) {
+-        return Math.round(c.index * nshades);
+-    });
+-
+-    /*
+-     * Add alpha channel to the map
+-     */
+-    if (alpha[0] < 0) alpha[0] = 0;
+-    if (alpha[1] < 0) alpha[0] = 0;
+-    if (alpha[0] > 1) alpha[0] = 1;
+-    if (alpha[1] > 1) alpha[0] = 1;
+-
+-    for (i = 0; i < indicies.length; ++i) {
+-        index = cmap[i].index;
+-        rgba = cmap[i].rgb;
+-
+-        // if user supplies their own map use it
+-        if (rgba.length === 4 && rgba[3] >= 0 && rgba[3] <= 1) continue;
+-        rgba[3] = alpha[0] + (alpha[1] - alpha[0])*index;
+-    }
+-
+-    /*
+-     * map increasing linear values between indicies to
+-     * linear steps in colorvalues
+-     */
+-    for (i = 0; i < indicies.length-1; ++i) {
+-        nsteps = indicies[i+1] - indicies[i];
+-        fromrgba = cmap[i].rgb;
+-        torgba = cmap[i+1].rgb;
+-        r = r.concat(at.linspace(fromrgba[0], torgba[0], nsteps ) );
+-        g = g.concat(at.linspace(fromrgba[1], torgba[1], nsteps ) );
+-        b = b.concat(at.linspace(fromrgba[2], torgba[2], nsteps ) );
+-        a = a.concat(at.linspace(fromrgba[3], torgba[3], nsteps ) );
+-    }
+-
+-    r = r.map( Math.round );
+-    g = g.map( Math.round );
+-    b = b.map( Math.round );
+-
+-    colors = at.zip(r, g, b, a);
+-
+-    if (format === 'hex') colors = colors.map( rgb2hex );
+-    if (format === 'rgbaString') colors = colors.map( rgbaStr );
+-
+-    return colors;
+-};
+-
+-
+-function rgb2hex (rgba) {
+-    var dig, hex = '#';
+-    for (var i = 0; i < 3; ++i) {
+-        dig = rgba[i];
+-        dig = dig.toString(16);
+-        hex += ('00' + dig).substr( dig.length );
+-    }
+-    return hex;
+-}
+-
+-function rgbaStr (rgba) {
+-    return 'rgba(' + rgba.join(',') + ')';
+-}
+-
+-},{"./colorScales":87,"arraytools":37,"clone":86}],89:[function(require,module,exports){
+-module.exports = compareCells
+-
+-var min = Math.min
+-
+-function compareInt(a, b) {
+-  return a - b
+-}
+-
+-function compareCells(a, b) {
+-  var n = a.length
+-    , t = a.length - b.length
+-  if(t) {
+-    return t
+-  }
+-  switch(n) {
+-    case 0:
+-      return 0
+-    case 1:
+-      return a[0] - b[0]
+-    case 2:
+-      return (a[0]+a[1]-b[0]-b[1]) ||
+-             min(a[0],a[1]) - min(b[0],b[1])
+-    case 3:
+-      var l1 = a[0]+a[1]
+-        , m1 = b[0]+b[1]
+-      t = l1+a[2] - (m1+b[2])
+-      if(t) {
+-        return t
+-      }
+-      var l0 = min(a[0], a[1])
+-        , m0 = min(b[0], b[1])
+-      return min(l0, a[2]) - min(m0, b[2]) ||
+-             min(l0+a[2], l1) - min(m0+b[2], m1)
+-    case 4:
+-      var aw=a[0], ax=a[1], ay=a[2], az=a[3]
+-        , bw=b[0], bx=b[1], by=b[2], bz=b[3]
+-      return (aw+ax+ay+az)-(bw+bx+by+bz) ||
+-             min(aw,ax,ay,az)-min(bw,bx,by,bz,bw) ||
+-             min(aw+ax,aw+ay,aw+az,ax+ay,ax+az,ay+az) -
+-               min(bw+bx,bw+by,bw+bz,bx+by,bx+bz,by+bz) ||
+-             min(aw+ax+ay,aw+ax+az,aw+ay+az,ax+ay+az) -
+-               min(bw+bx+by,bw+bx+bz,bw+by+bz,bx+by+bz)
+-    default:
+-      var as = a.slice().sort(compareInt)
+-      var bs = b.slice().sort(compareInt)
+-      for(var i=0; i<n; ++i) {
+-        t = as[i] - bs[i]
+-        if(t) {
+-          return t
+-        }
+-      }
+-      return 0
+-  }
+-}
+-
+-},{}],90:[function(require,module,exports){
+-"use strict"
+-
+-var convexHull1d = require('./lib/ch1d')
+-var convexHull2d = require('./lib/ch2d')
+-var convexHullnd = require('./lib/chnd')
+-
+-module.exports = convexHull
+-
+-function convexHull(points) {
+-  var n = points.length
+-  if(n === 0) {
+-    return []
+-  } else if(n === 1) {
+-    return [[0]]
+-  }
+-  var d = points[0].length
+-  if(d === 0) {
+-    return []
+-  } else if(d === 1) {
+-    return convexHull1d(points)
+-  } else if(d === 2) {
+-    return convexHull2d(points)
+-  }
+-  return convexHullnd(points, d)
+-}
+-},{"./lib/ch1d":91,"./lib/ch2d":92,"./lib/chnd":93}],91:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = convexHull1d
+-
+-function convexHull1d(points) {
+-  var lo = 0
+-  var hi = 0
+-  for(var i=1; i<points.length; ++i) {
+-    if(points[i][0] < points[lo][0]) {
+-      lo = i
+-    }
+-    if(points[i][0] > points[hi][0]) {
+-      hi = i
+-    }
+-  }
+-  if(lo < hi) {
+-    return [[lo], [hi]]
+-  } else if(lo > hi) {
+-    return [[hi], [lo]]
+-  } else {
+-    return [[lo]]
+-  }
+-}
+-},{}],92:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = convexHull2D
+-
+-var monotoneHull = require('monotone-convex-hull-2d')
+-
+-function convexHull2D(points) {
+-  var hull = monotoneHull(points)
+-  var h = hull.length
+-  if(h <= 2) {
+-    return []
+-  }
+-  var edges = new Array(h)
+-  var a = hull[h-1]
+-  for(var i=0; i<h; ++i) {
+-    var b = hull[i]
+-    edges[i] = [a,b]
+-    a = b
+-  }
+-  return edges
+-}
+-
+-},{"monotone-convex-hull-2d":95}],93:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = convexHullnD
+-
+-var ich = require('incremental-convex-hull')
+-var aff = require('affine-hull')
+-
+-function permute(points, front) {
+-  var n = points.length
+-  var npoints = new Array(n)
+-  for(var i=0; i<front.length; ++i) {
+-    npoints[i] = points[front[i]]
+-  }
+-  var ptr = front.length
+-  for(var i=0; i<n; ++i) {
+-    if(front.indexOf(i) < 0) {
+-      npoints[ptr++] = points[i]
+-    }
+-  }
+-  return npoints
+-}
+-
+-function invPermute(cells, front) {
+-  var nc = cells.length
+-  var nf = front.length
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      var x = c[j]
+-      if(x < nf) {
+-        c[j] = front[x]
+-      } else {
+-        x = x - nf
+-        for(var k=0; k<nf; ++k) {
+-          if(x >= front[k]) {
+-            x += 1
+-          }
+-        }
+-        c[j] = x
+-      }
+-    }
+-  }
+-  return cells
+-}
+-
+-function convexHullnD(points, d) {
+-  try {
+-    return ich(points, true)
+-  } catch(e) {
+-    //If point set is degenerate, try to find a basis and rerun it
+-    var ah = aff(points)
+-    if(ah.length <= d) {
+-      //No basis, no try
+-      return []
+-    }
+-    var npoints = permute(points, ah)
+-    var nhull   = ich(npoints, true)
+-    return invPermute(nhull, ah)
+-  }
+-}
+-},{"affine-hull":94,"incremental-convex-hull":201}],94:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = affineHull
+-
+-var orient = require('robust-orientation')
+-
+-function linearlyIndependent(points, d) {
+-  var nhull = new Array(d+1)
+-  for(var i=0; i<points.length; ++i) {
+-    nhull[i] = points[i]
+-  }
+-  for(var i=0; i<=points.length; ++i) {
+-    for(var j=points.length; j<=d; ++j) {
+-      var x = new Array(d)
+-      for(var k=0; k<d; ++k) {
+-        x[k] = Math.pow(j+1-i, k)
+-      }
+-      nhull[j] = x
+-    }
+-    var o = orient.apply(void 0, nhull)
+-    if(o) {
+-      return true
+-    }
+-  }
+-  return false
+-}
+-
+-function affineHull(points) {
+-  var n = points.length
+-  if(n === 0) {
+-    return []
+-  }
+-  if(n === 1) {
+-    return [0]
+-  }
+-  var d = points[0].length
+-  var frame = [ points[0] ]
+-  var index = [ 0 ]
+-  for(var i=1; i<n; ++i) {
+-    frame.push(points[i])
+-    if(!linearlyIndependent(frame, d)) {
+-      frame.pop()
+-      continue
+-    }
+-    index.push(i)
+-    if(index.length === d+1) {
+-      return index
+-    }
+-  }
+-  return index
+-}
+-},{"robust-orientation":225}],95:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = monotoneConvexHull2D
+-
+-var orient = require('robust-orientation')[3]
+-
+-function monotoneConvexHull2D(points) {
+-  var n = points.length
+-
+-  if(n < 3) {
+-    var result = new Array(n)
+-    for(var i=0; i<n; ++i) {
+-      result[i] = i
+-    }
+-
+-    if(n === 2 &&
+-       points[0][0] === points[1][0] &&
+-       points[0][1] === points[1][1]) {
+-      return [0]
+-    }
+-
+-    return result
+-  }
+-
+-  //Sort point indices along x-axis
+-  var sorted = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    sorted[i] = i
+-  }
+-  sorted.sort(function(a,b) {
+-    var d = points[a][0]-points[b][0]
+-    if(d) {
+-      return d
+-    }
+-    return points[a][1] - points[b][1]
+-  })
+-
+-  //Construct upper and lower hulls
+-  var lower = [sorted[0], sorted[1]]
+-  var upper = [sorted[0], sorted[1]]
+-
+-  for(var i=2; i<n; ++i) {
+-    var idx = sorted[i]
+-    var p   = points[idx]
+-
+-    //Insert into lower list
+-    var m = lower.length
+-    while(m > 1 && orient(
+-        points[lower[m-2]], 
+-        points[lower[m-1]], 
+-        p) <= 0) {
+-      m -= 1
+-      lower.pop()
+-    }
+-    lower.push(idx)
+-
+-    //Insert into upper list
+-    m = upper.length
+-    while(m > 1 && orient(
+-        points[upper[m-2]], 
+-        points[upper[m-1]], 
+-        p) >= 0) {
+-      m -= 1
+-      upper.pop()
+-    }
+-    upper.push(idx)
+-  }
+-
+-  //Merge lists together
+-  var result = new Array(upper.length + lower.length - 2)
+-  var ptr    = 0
+-  for(var i=0, nl=lower.length; i<nl; ++i) {
+-    result[ptr++] = lower[i]
+-  }
+-  for(var j=upper.length-2; j>0; --j) {
+-    result[ptr++] = upper[j]
+-  }
+-
+-  //Return result
+-  return result
+-}
+-},{"robust-orientation":225}],96:[function(require,module,exports){
++module.exports = cubicHermite
++module.exports.derivative = dcubicHermite
++},{}],70:[function(require,module,exports){
+ "use strict"
+ 
+ var createThunk = require("./lib/thunk.js")
+@@ -11721,7 +9487,7 @@ function compileCwise(user_args) {
+ 
+ module.exports = compileCwise
+ 
+-},{"./lib/thunk.js":98}],97:[function(require,module,exports){
++},{"./lib/thunk.js":72}],71:[function(require,module,exports){
+ "use strict"
+ 
+ var uniq = require("uniq")
+@@ -12077,7 +9843,7 @@ function generateCWiseOp(proc, typesig) {
+ }
+ module.exports = generateCWiseOp
+ 
+-},{"uniq":243}],98:[function(require,module,exports){
++},{"uniq":248}],72:[function(require,module,exports){
+ "use strict"
+ 
+ // The function below is called when constructing a cwise function object, and does the following:
+@@ -12165,12 +9931,12 @@ function createThunk(proc) {
+ 
+ module.exports = createThunk
+ 
+-},{"./compile.js":97}],99:[function(require,module,exports){
++},{"./compile.js":71}],73:[function(require,module,exports){
+ module.exports = require("cwise-compiler")
+-},{"cwise-compiler":96}],100:[function(require,module,exports){
++},{"cwise-compiler":70}],74:[function(require,module,exports){
+ !function() {
+   var d3 = {
+-    version: "3.5.16"
++    version: "3.5.17"
+   };
+   var d3_arraySlice = [].slice, d3_array = function(list) {
+     return d3_arraySlice.call(list);
+@@ -12537,229 +10303,655 @@ module.exports = require("cwise-compiler")
+     for (var key in this._) return false;
+     return true;
+   }
+-  d3.nest = function() {
+-    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
+-    function map(mapType, array, depth) {
+-      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
+-      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
++  d3.nest = function() {
++    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
++    function map(mapType, array, depth) {
++      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
++      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
++      while (++i < n) {
++        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
++          values.push(object);
++        } else {
++          valuesByKey.set(keyValue, [ object ]);
++        }
++      }
++      if (mapType) {
++        object = mapType();
++        setter = function(keyValue, values) {
++          object.set(keyValue, map(mapType, values, depth));
++        };
++      } else {
++        object = {};
++        setter = function(keyValue, values) {
++          object[keyValue] = map(mapType, values, depth);
++        };
++      }
++      valuesByKey.forEach(setter);
++      return object;
++    }
++    function entries(map, depth) {
++      if (depth >= keys.length) return map;
++      var array = [], sortKey = sortKeys[depth++];
++      map.forEach(function(key, keyMap) {
++        array.push({
++          key: key,
++          values: entries(keyMap, depth)
++        });
++      });
++      return sortKey ? array.sort(function(a, b) {
++        return sortKey(a.key, b.key);
++      }) : array;
++    }
++    nest.map = function(array, mapType) {
++      return map(mapType, array, 0);
++    };
++    nest.entries = function(array) {
++      return entries(map(d3.map, array, 0), 0);
++    };
++    nest.key = function(d) {
++      keys.push(d);
++      return nest;
++    };
++    nest.sortKeys = function(order) {
++      sortKeys[keys.length - 1] = order;
++      return nest;
++    };
++    nest.sortValues = function(order) {
++      sortValues = order;
++      return nest;
++    };
++    nest.rollup = function(f) {
++      rollup = f;
++      return nest;
++    };
++    return nest;
++  };
++  d3.set = function(array) {
++    var set = new d3_Set();
++    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
++    return set;
++  };
++  function d3_Set() {
++    this._ = Object.create(null);
++  }
++  d3_class(d3_Set, {
++    has: d3_map_has,
++    add: function(key) {
++      this._[d3_map_escape(key += "")] = true;
++      return key;
++    },
++    remove: d3_map_remove,
++    values: d3_map_keys,
++    size: d3_map_size,
++    empty: d3_map_empty,
++    forEach: function(f) {
++      for (var key in this._) f.call(this, d3_map_unescape(key));
++    }
++  });
++  d3.behavior = {};
++  function d3_identity(d) {
++    return d;
++  }
++  d3.rebind = function(target, source) {
++    var i = 1, n = arguments.length, method;
++    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
++    return target;
++  };
++  function d3_rebind(target, source, method) {
++    return function() {
++      var value = method.apply(source, arguments);
++      return value === source ? target : value;
++    };
++  }
++  function d3_vendorSymbol(object, name) {
++    if (name in object) return name;
++    name = name.charAt(0).toUpperCase() + name.slice(1);
++    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
++      var prefixName = d3_vendorPrefixes[i] + name;
++      if (prefixName in object) return prefixName;
++    }
++  }
++  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
++  function d3_noop() {}
++  d3.dispatch = function() {
++    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
++    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
++    return dispatch;
++  };
++  function d3_dispatch() {}
++  d3_dispatch.prototype.on = function(type, listener) {
++    var i = type.indexOf("."), name = "";
++    if (i >= 0) {
++      name = type.slice(i + 1);
++      type = type.slice(0, i);
++    }
++    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
++    if (arguments.length === 2) {
++      if (listener == null) for (type in this) {
++        if (this.hasOwnProperty(type)) this[type].on(name, null);
++      }
++      return this;
++    }
++  };
++  function d3_dispatch_event(dispatch) {
++    var listeners = [], listenerByName = new d3_Map();
++    function event() {
++      var z = listeners, i = -1, n = z.length, l;
++      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
++      return dispatch;
++    }
++    event.on = function(name, listener) {
++      var l = listenerByName.get(name), i;
++      if (arguments.length < 2) return l && l.on;
++      if (l) {
++        l.on = null;
++        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
++        listenerByName.remove(name);
++      }
++      if (listener) listeners.push(listenerByName.set(name, {
++        on: listener
++      }));
++      return dispatch;
++    };
++    return event;
++  }
++  d3.event = null;
++  function d3_eventPreventDefault() {
++    d3.event.preventDefault();
++  }
++  function d3_eventSource() {
++    var e = d3.event, s;
++    while (s = e.sourceEvent) e = s;
++    return e;
++  }
++  function d3_eventDispatch(target) {
++    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
++    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
++    dispatch.of = function(thiz, argumentz) {
++      return function(e1) {
++        try {
++          var e0 = e1.sourceEvent = d3.event;
++          e1.target = target;
++          d3.event = e1;
++          dispatch[e1.type].apply(thiz, argumentz);
++        } finally {
++          d3.event = e0;
++        }
++      };
++    };
++    return dispatch;
++  }
++  d3.requote = function(s) {
++    return s.replace(d3_requote_re, "\\$&");
++  };
++  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
++  var d3_subclass = {}.__proto__ ? function(object, prototype) {
++    object.__proto__ = prototype;
++  } : function(object, prototype) {
++    for (var property in prototype) object[property] = prototype[property];
++  };
++  function d3_selection(groups) {
++    d3_subclass(groups, d3_selectionPrototype);
++    return groups;
++  }
++  var d3_select = function(s, n) {
++    return n.querySelector(s);
++  }, d3_selectAll = function(s, n) {
++    return n.querySelectorAll(s);
++  }, d3_selectMatches = function(n, s) {
++    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
++    d3_selectMatches = function(n, s) {
++      return d3_selectMatcher.call(n, s);
++    };
++    return d3_selectMatches(n, s);
++  };
++  if (typeof Sizzle === "function") {
++    d3_select = function(s, n) {
++      return Sizzle(s, n)[0] || null;
++    };
++    d3_selectAll = Sizzle;
++    d3_selectMatches = Sizzle.matchesSelector;
++  }
++  d3.selection = function() {
++    return d3.select(d3_document.documentElement);
++  };
++  var d3_selectionPrototype = d3.selection.prototype = [];
++  d3_selectionPrototype.select = function(selector) {
++    var subgroups = [], subgroup, subnode, group, node;
++    selector = d3_selection_selector(selector);
++    for (var j = -1, m = this.length; ++j < m; ) {
++      subgroups.push(subgroup = []);
++      subgroup.parentNode = (group = this[j]).parentNode;
++      for (var i = -1, n = group.length; ++i < n; ) {
++        if (node = group[i]) {
++          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
++          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
++        } else {
++          subgroup.push(null);
++        }
++      }
++    }
++    return d3_selection(subgroups);
++  };
++  function d3_selection_selector(selector) {
++    return typeof selector === "function" ? selector : function() {
++      return d3_select(selector, this);
++    };
++  }
++  d3_selectionPrototype.selectAll = function(selector) {
++    var subgroups = [], subgroup, node;
++    selector = d3_selection_selectorAll(selector);
++    for (var j = -1, m = this.length; ++j < m; ) {
++      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
++        if (node = group[i]) {
++          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
++          subgroup.parentNode = node;
++        }
++      }
++    }
++    return d3_selection(subgroups);
++  };
++  function d3_selection_selectorAll(selector) {
++    return typeof selector === "function" ? selector : function() {
++      return d3_selectAll(selector, this);
++    };
++  }
++  var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
++  var d3_nsPrefix = {
++    svg: "http://www.w3.org/2000/svg",
++    xhtml: d3_nsXhtml,
++    xlink: "http://www.w3.org/1999/xlink",
++    xml: "http://www.w3.org/XML/1998/namespace",
++    xmlns: "http://www.w3.org/2000/xmlns/"
++  };
++  d3.ns = {
++    prefix: d3_nsPrefix,
++    qualify: function(name) {
++      var i = name.indexOf(":"), prefix = name;
++      if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
++      return d3_nsPrefix.hasOwnProperty(prefix) ? {
++        space: d3_nsPrefix[prefix],
++        local: name
++      } : name;
++    }
++  };
++  d3_selectionPrototype.attr = function(name, value) {
++    if (arguments.length < 2) {
++      if (typeof name === "string") {
++        var node = this.node();
++        name = d3.ns.qualify(name);
++        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
++      }
++      for (value in name) this.each(d3_selection_attr(value, name[value]));
++      return this;
++    }
++    return this.each(d3_selection_attr(name, value));
++  };
++  function d3_selection_attr(name, value) {
++    name = d3.ns.qualify(name);
++    function attrNull() {
++      this.removeAttribute(name);
++    }
++    function attrNullNS() {
++      this.removeAttributeNS(name.space, name.local);
++    }
++    function attrConstant() {
++      this.setAttribute(name, value);
++    }
++    function attrConstantNS() {
++      this.setAttributeNS(name.space, name.local, value);
++    }
++    function attrFunction() {
++      var x = value.apply(this, arguments);
++      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
++    }
++    function attrFunctionNS() {
++      var x = value.apply(this, arguments);
++      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
++    }
++    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
++  }
++  function d3_collapse(s) {
++    return s.trim().replace(/\s+/g, " ");
++  }
++  d3_selectionPrototype.classed = function(name, value) {
++    if (arguments.length < 2) {
++      if (typeof name === "string") {
++        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
++        if (value = node.classList) {
++          while (++i < n) if (!value.contains(name[i])) return false;
++        } else {
++          value = node.getAttribute("class");
++          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
++        }
++        return true;
++      }
++      for (value in name) this.each(d3_selection_classed(value, name[value]));
++      return this;
++    }
++    return this.each(d3_selection_classed(name, value));
++  };
++  function d3_selection_classedRe(name) {
++    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
++  }
++  function d3_selection_classes(name) {
++    return (name + "").trim().split(/^|\s+/);
++  }
++  function d3_selection_classed(name, value) {
++    name = d3_selection_classes(name).map(d3_selection_classedName);
++    var n = name.length;
++    function classedConstant() {
++      var i = -1;
++      while (++i < n) name[i](this, value);
++    }
++    function classedFunction() {
++      var i = -1, x = value.apply(this, arguments);
++      while (++i < n) name[i](this, x);
++    }
++    return typeof value === "function" ? classedFunction : classedConstant;
++  }
++  function d3_selection_classedName(name) {
++    var re = d3_selection_classedRe(name);
++    return function(node, value) {
++      if (c = node.classList) return value ? c.add(name) : c.remove(name);
++      var c = node.getAttribute("class") || "";
++      if (value) {
++        re.lastIndex = 0;
++        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
++      } else {
++        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
++      }
++    };
++  }
++  d3_selectionPrototype.style = function(name, value, priority) {
++    var n = arguments.length;
++    if (n < 3) {
++      if (typeof name !== "string") {
++        if (n < 2) value = "";
++        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
++        return this;
++      }
++      if (n < 2) {
++        var node = this.node();
++        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
++      }
++      priority = "";
++    }
++    return this.each(d3_selection_style(name, value, priority));
++  };
++  function d3_selection_style(name, value, priority) {
++    function styleNull() {
++      this.style.removeProperty(name);
++    }
++    function styleConstant() {
++      this.style.setProperty(name, value, priority);
++    }
++    function styleFunction() {
++      var x = value.apply(this, arguments);
++      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
++    }
++    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
++  }
++  d3_selectionPrototype.property = function(name, value) {
++    if (arguments.length < 2) {
++      if (typeof name === "string") return this.node()[name];
++      for (value in name) this.each(d3_selection_property(value, name[value]));
++      return this;
++    }
++    return this.each(d3_selection_property(name, value));
++  };
++  function d3_selection_property(name, value) {
++    function propertyNull() {
++      delete this[name];
++    }
++    function propertyConstant() {
++      this[name] = value;
++    }
++    function propertyFunction() {
++      var x = value.apply(this, arguments);
++      if (x == null) delete this[name]; else this[name] = x;
++    }
++    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
++  }
++  d3_selectionPrototype.text = function(value) {
++    return arguments.length ? this.each(typeof value === "function" ? function() {
++      var v = value.apply(this, arguments);
++      this.textContent = v == null ? "" : v;
++    } : value == null ? function() {
++      this.textContent = "";
++    } : function() {
++      this.textContent = value;
++    }) : this.node().textContent;
++  };
++  d3_selectionPrototype.html = function(value) {
++    return arguments.length ? this.each(typeof value === "function" ? function() {
++      var v = value.apply(this, arguments);
++      this.innerHTML = v == null ? "" : v;
++    } : value == null ? function() {
++      this.innerHTML = "";
++    } : function() {
++      this.innerHTML = value;
++    }) : this.node().innerHTML;
++  };
++  d3_selectionPrototype.append = function(name) {
++    name = d3_selection_creator(name);
++    return this.select(function() {
++      return this.appendChild(name.apply(this, arguments));
++    });
++  };
++  function d3_selection_creator(name) {
++    function create() {
++      var document = this.ownerDocument, namespace = this.namespaceURI;
++      return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
++    }
++    function createNS() {
++      return this.ownerDocument.createElementNS(name.space, name.local);
++    }
++    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
++  }
++  d3_selectionPrototype.insert = function(name, before) {
++    name = d3_selection_creator(name);
++    before = d3_selection_selector(before);
++    return this.select(function() {
++      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
++    });
++  };
++  d3_selectionPrototype.remove = function() {
++    return this.each(d3_selectionRemove);
++  };
++  function d3_selectionRemove() {
++    var parent = this.parentNode;
++    if (parent) parent.removeChild(this);
++  }
++  d3_selectionPrototype.data = function(value, key) {
++    var i = -1, n = this.length, group, node;
++    if (!arguments.length) {
++      value = new Array(n = (group = this[0]).length);
+       while (++i < n) {
+-        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
+-          values.push(object);
+-        } else {
+-          valuesByKey.set(keyValue, [ object ]);
++        if (node = group[i]) {
++          value[i] = node.__data__;
+         }
+       }
+-      if (mapType) {
+-        object = mapType();
+-        setter = function(keyValue, values) {
+-          object.set(keyValue, map(mapType, values, depth));
+-        };
++      return value;
++    }
++    function bind(group, groupData) {
++      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
++      if (key) {
++        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
++        for (i = -1; ++i < n; ) {
++          if (node = group[i]) {
++            if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
++              exitNodes[i] = node;
++            } else {
++              nodeByKeyValue.set(keyValue, node);
++            }
++            keyValues[i] = keyValue;
++          }
++        }
++        for (i = -1; ++i < m; ) {
++          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
++            enterNodes[i] = d3_selection_dataNode(nodeData);
++          } else if (node !== true) {
++            updateNodes[i] = node;
++            node.__data__ = nodeData;
++          }
++          nodeByKeyValue.set(keyValue, true);
++        }
++        for (i = -1; ++i < n; ) {
++          if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
++            exitNodes[i] = group[i];
++          }
++        }
+       } else {
+-        object = {};
+-        setter = function(keyValue, values) {
+-          object[keyValue] = map(mapType, values, depth);
+-        };
++        for (i = -1; ++i < n0; ) {
++          node = group[i];
++          nodeData = groupData[i];
++          if (node) {
++            node.__data__ = nodeData;
++            updateNodes[i] = node;
++          } else {
++            enterNodes[i] = d3_selection_dataNode(nodeData);
++          }
++        }
++        for (;i < m; ++i) {
++          enterNodes[i] = d3_selection_dataNode(groupData[i]);
++        }
++        for (;i < n; ++i) {
++          exitNodes[i] = group[i];
++        }
+       }
+-      valuesByKey.forEach(setter);
+-      return object;
++      enterNodes.update = updateNodes;
++      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
++      enter.push(enterNodes);
++      update.push(updateNodes);
++      exit.push(exitNodes);
+     }
+-    function entries(map, depth) {
+-      if (depth >= keys.length) return map;
+-      var array = [], sortKey = sortKeys[depth++];
+-      map.forEach(function(key, keyMap) {
+-        array.push({
+-          key: key,
+-          values: entries(keyMap, depth)
+-        });
+-      });
+-      return sortKey ? array.sort(function(a, b) {
+-        return sortKey(a.key, b.key);
+-      }) : array;
++    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
++    if (typeof value === "function") {
++      while (++i < n) {
++        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
++      }
++    } else {
++      while (++i < n) {
++        bind(group = this[i], value);
++      }
+     }
+-    nest.map = function(array, mapType) {
+-      return map(mapType, array, 0);
+-    };
+-    nest.entries = function(array) {
+-      return entries(map(d3.map, array, 0), 0);
+-    };
+-    nest.key = function(d) {
+-      keys.push(d);
+-      return nest;
+-    };
+-    nest.sortKeys = function(order) {
+-      sortKeys[keys.length - 1] = order;
+-      return nest;
+-    };
+-    nest.sortValues = function(order) {
+-      sortValues = order;
+-      return nest;
++    update.enter = function() {
++      return enter;
+     };
+-    nest.rollup = function(f) {
+-      rollup = f;
+-      return nest;
++    update.exit = function() {
++      return exit;
+     };
+-    return nest;
+-  };
+-  d3.set = function(array) {
+-    var set = new d3_Set();
+-    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
+-    return set;
+-  };
+-  function d3_Set() {
+-    this._ = Object.create(null);
+-  }
+-  d3_class(d3_Set, {
+-    has: d3_map_has,
+-    add: function(key) {
+-      this._[d3_map_escape(key += "")] = true;
+-      return key;
+-    },
+-    remove: d3_map_remove,
+-    values: d3_map_keys,
+-    size: d3_map_size,
+-    empty: d3_map_empty,
+-    forEach: function(f) {
+-      for (var key in this._) f.call(this, d3_map_unescape(key));
+-    }
+-  });
+-  d3.behavior = {};
+-  function d3_identity(d) {
+-    return d;
+-  }
+-  d3.rebind = function(target, source) {
+-    var i = 1, n = arguments.length, method;
+-    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
+-    return target;
++    return update;
+   };
+-  function d3_rebind(target, source, method) {
+-    return function() {
+-      var value = method.apply(source, arguments);
+-      return value === source ? target : value;
++  function d3_selection_dataNode(data) {
++    return {
++      __data__: data
+     };
+   }
+-  function d3_vendorSymbol(object, name) {
+-    if (name in object) return name;
+-    name = name.charAt(0).toUpperCase() + name.slice(1);
+-    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
+-      var prefixName = d3_vendorPrefixes[i] + name;
+-      if (prefixName in object) return prefixName;
+-    }
+-  }
+-  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
+-  function d3_noop() {}
+-  d3.dispatch = function() {
+-    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
+-    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
+-    return dispatch;
++  d3_selectionPrototype.datum = function(value) {
++    return arguments.length ? this.property("__data__", value) : this.property("__data__");
+   };
+-  function d3_dispatch() {}
+-  d3_dispatch.prototype.on = function(type, listener) {
+-    var i = type.indexOf("."), name = "";
+-    if (i >= 0) {
+-      name = type.slice(i + 1);
+-      type = type.slice(0, i);
+-    }
+-    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
+-    if (arguments.length === 2) {
+-      if (listener == null) for (type in this) {
+-        if (this.hasOwnProperty(type)) this[type].on(name, null);
++  d3_selectionPrototype.filter = function(filter) {
++    var subgroups = [], subgroup, group, node;
++    if (typeof filter !== "function") filter = d3_selection_filter(filter);
++    for (var j = 0, m = this.length; j < m; j++) {
++      subgroups.push(subgroup = []);
++      subgroup.parentNode = (group = this[j]).parentNode;
++      for (var i = 0, n = group.length; i < n; i++) {
++        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
++          subgroup.push(node);
++        }
+       }
+-      return this;
+     }
++    return d3_selection(subgroups);
+   };
+-  function d3_dispatch_event(dispatch) {
+-    var listeners = [], listenerByName = new d3_Map();
+-    function event() {
+-      var z = listeners, i = -1, n = z.length, l;
+-      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
+-      return dispatch;
+-    }
+-    event.on = function(name, listener) {
+-      var l = listenerByName.get(name), i;
+-      if (arguments.length < 2) return l && l.on;
+-      if (l) {
+-        l.on = null;
+-        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
+-        listenerByName.remove(name);
+-      }
+-      if (listener) listeners.push(listenerByName.set(name, {
+-        on: listener
+-      }));
+-      return dispatch;
++  function d3_selection_filter(selector) {
++    return function() {
++      return d3_selectMatches(this, selector);
+     };
+-    return event;
+-  }
+-  d3.event = null;
+-  function d3_eventPreventDefault() {
+-    d3.event.preventDefault();
+-  }
+-  function d3_eventSource() {
+-    var e = d3.event, s;
+-    while (s = e.sourceEvent) e = s;
+-    return e;
+   }
+-  function d3_eventDispatch(target) {
+-    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
+-    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
+-    dispatch.of = function(thiz, argumentz) {
+-      return function(e1) {
+-        try {
+-          var e0 = e1.sourceEvent = d3.event;
+-          e1.target = target;
+-          d3.event = e1;
+-          dispatch[e1.type].apply(thiz, argumentz);
+-        } finally {
+-          d3.event = e0;
++  d3_selectionPrototype.order = function() {
++    for (var j = -1, m = this.length; ++j < m; ) {
++      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
++        if (node = group[i]) {
++          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
++          next = node;
+         }
+-      };
++      }
++    }
++    return this;
++  };
++  d3_selectionPrototype.sort = function(comparator) {
++    comparator = d3_selection_sortComparator.apply(this, arguments);
++    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
++    return this.order();
++  };
++  function d3_selection_sortComparator(comparator) {
++    if (!arguments.length) comparator = d3_ascending;
++    return function(a, b) {
++      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
+     };
+-    return dispatch;
+   }
+-  d3.requote = function(s) {
+-    return s.replace(d3_requote_re, "\\$&");
+-  };
+-  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
+-  var d3_subclass = {}.__proto__ ? function(object, prototype) {
+-    object.__proto__ = prototype;
+-  } : function(object, prototype) {
+-    for (var property in prototype) object[property] = prototype[property];
++  d3_selectionPrototype.each = function(callback) {
++    return d3_selection_each(this, function(node, i, j) {
++      callback.call(node, node.__data__, i, j);
++    });
+   };
+-  function d3_selection(groups) {
+-    d3_subclass(groups, d3_selectionPrototype);
++  function d3_selection_each(groups, callback) {
++    for (var j = 0, m = groups.length; j < m; j++) {
++      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
++        if (node = group[i]) callback(node, i, j);
++      }
++    }
+     return groups;
+   }
+-  var d3_select = function(s, n) {
+-    return n.querySelector(s);
+-  }, d3_selectAll = function(s, n) {
+-    return n.querySelectorAll(s);
+-  }, d3_selectMatches = function(n, s) {
+-    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
+-    d3_selectMatches = function(n, s) {
+-      return d3_selectMatcher.call(n, s);
+-    };
+-    return d3_selectMatches(n, s);
++  d3_selectionPrototype.call = function(callback) {
++    var args = d3_array(arguments);
++    callback.apply(args[0] = this, args);
++    return this;
+   };
+-  if (typeof Sizzle === "function") {
+-    d3_select = function(s, n) {
+-      return Sizzle(s, n)[0] || null;
+-    };
+-    d3_selectAll = Sizzle;
+-    d3_selectMatches = Sizzle.matchesSelector;
+-  }
+-  d3.selection = function() {
+-    return d3.select(d3_document.documentElement);
++  d3_selectionPrototype.empty = function() {
++    return !this.node();
+   };
+-  var d3_selectionPrototype = d3.selection.prototype = [];
+-  d3_selectionPrototype.select = function(selector) {
+-    var subgroups = [], subgroup, subnode, group, node;
+-    selector = d3_selection_selector(selector);
++  d3_selectionPrototype.node = function() {
++    for (var j = 0, m = this.length; j < m; j++) {
++      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
++        var node = group[i];
++        if (node) return node;
++      }
++    }
++    return null;
++  };
++  d3_selectionPrototype.size = function() {
++    var n = 0;
++    d3_selection_each(this, function() {
++      ++n;
++    });
++    return n;
++  };
++  function d3_selection_enter(selection) {
++    d3_subclass(selection, d3_selection_enterPrototype);
++    return selection;
++  }
++  var d3_selection_enterPrototype = [];
++  d3.selection.enter = d3_selection_enter;
++  d3.selection.enter.prototype = d3_selection_enterPrototype;
++  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
++  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
++  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
++  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
++  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
++  d3_selection_enterPrototype.select = function(selector) {
++    var subgroups = [], subgroup, subnode, upgroup, group, node;
+     for (var j = -1, m = this.length; ++j < m; ) {
++      upgroup = (group = this[j]).update;
+       subgroups.push(subgroup = []);
+-      subgroup.parentNode = (group = this[j]).parentNode;
++      subgroup.parentNode = group.parentNode;
+       for (var i = -1, n = group.length; ++i < n; ) {
+         if (node = group[i]) {
+-          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
+-          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
++          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
++          subnode.__data__ = node.__data__;
+         } else {
+           subgroup.push(null);
+         }
+@@ -12767,33077 +10959,35659 @@ module.exports = require("cwise-compiler")
+     }
+     return d3_selection(subgroups);
+   };
+-  function d3_selection_selector(selector) {
+-    return typeof selector === "function" ? selector : function() {
+-      return d3_select(selector, this);
++  d3_selection_enterPrototype.insert = function(name, before) {
++    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
++    return d3_selectionPrototype.insert.call(this, name, before);
++  };
++  function d3_selection_enterInsertBefore(enter) {
++    var i0, j0;
++    return function(d, i, j) {
++      var group = enter[j].update, n = group.length, node;
++      if (j != j0) j0 = j, i0 = 0;
++      if (i >= i0) i0 = i + 1;
++      while (!(node = group[i0]) && ++i0 < n) ;
++      return node;
+     };
+   }
+-  d3_selectionPrototype.selectAll = function(selector) {
+-    var subgroups = [], subgroup, node;
+-    selector = d3_selection_selectorAll(selector);
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
+-        if (node = group[i]) {
+-          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
+-          subgroup.parentNode = node;
++  d3.select = function(node) {
++    var group;
++    if (typeof node === "string") {
++      group = [ d3_select(node, d3_document) ];
++      group.parentNode = d3_document.documentElement;
++    } else {
++      group = [ node ];
++      group.parentNode = d3_documentElement(node);
++    }
++    return d3_selection([ group ]);
++  };
++  d3.selectAll = function(nodes) {
++    var group;
++    if (typeof nodes === "string") {
++      group = d3_array(d3_selectAll(nodes, d3_document));
++      group.parentNode = d3_document.documentElement;
++    } else {
++      group = d3_array(nodes);
++      group.parentNode = null;
++    }
++    return d3_selection([ group ]);
++  };
++  d3_selectionPrototype.on = function(type, listener, capture) {
++    var n = arguments.length;
++    if (n < 3) {
++      if (typeof type !== "string") {
++        if (n < 2) listener = false;
++        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
++        return this;
++      }
++      if (n < 2) return (n = this.node()["__on" + type]) && n._;
++      capture = false;
++    }
++    return this.each(d3_selection_on(type, listener, capture));
++  };
++  function d3_selection_on(type, listener, capture) {
++    var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
++    if (i > 0) type = type.slice(0, i);
++    var filter = d3_selection_onFilters.get(type);
++    if (filter) type = filter, wrap = d3_selection_onFilter;
++    function onRemove() {
++      var l = this[name];
++      if (l) {
++        this.removeEventListener(type, l, l.$);
++        delete this[name];
++      }
++    }
++    function onAdd() {
++      var l = wrap(listener, d3_array(arguments));
++      onRemove.call(this);
++      this.addEventListener(type, this[name] = l, l.$ = capture);
++      l._ = listener;
++    }
++    function removeAll() {
++      var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
++      for (var name in this) {
++        if (match = name.match(re)) {
++          var l = this[name];
++          this.removeEventListener(match[1], l, l.$);
++          delete this[name];
++        }
++      }
++    }
++    return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
++  }
++  var d3_selection_onFilters = d3.map({
++    mouseenter: "mouseover",
++    mouseleave: "mouseout"
++  });
++  if (d3_document) {
++    d3_selection_onFilters.forEach(function(k) {
++      if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
++    });
++  }
++  function d3_selection_onListener(listener, argumentz) {
++    return function(e) {
++      var o = d3.event;
++      d3.event = e;
++      argumentz[0] = this.__data__;
++      try {
++        listener.apply(this, argumentz);
++      } finally {
++        d3.event = o;
++      }
++    };
++  }
++  function d3_selection_onFilter(listener, argumentz) {
++    var l = d3_selection_onListener(listener, argumentz);
++    return function(e) {
++      var target = this, related = e.relatedTarget;
++      if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
++        l.call(target, e);
++      }
++    };
++  }
++  var d3_event_dragSelect, d3_event_dragId = 0;
++  function d3_event_dragSuppress(node) {
++    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
++    if (d3_event_dragSelect == null) {
++      d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
++    }
++    if (d3_event_dragSelect) {
++      var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
++      style[d3_event_dragSelect] = "none";
++    }
++    return function(suppressClick) {
++      w.on(name, null);
++      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
++      if (suppressClick) {
++        var off = function() {
++          w.on(click, null);
++        };
++        w.on(click, function() {
++          d3_eventPreventDefault();
++          off();
++        }, true);
++        setTimeout(off, 0);
++      }
++    };
++  }
++  d3.mouse = function(container) {
++    return d3_mousePoint(container, d3_eventSource());
++  };
++  var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
++  function d3_mousePoint(container, e) {
++    if (e.changedTouches) e = e.changedTouches[0];
++    var svg = container.ownerSVGElement || container;
++    if (svg.createSVGPoint) {
++      var point = svg.createSVGPoint();
++      if (d3_mouse_bug44083 < 0) {
++        var window = d3_window(container);
++        if (window.scrollX || window.scrollY) {
++          svg = d3.select("body").append("svg").style({
++            position: "absolute",
++            top: 0,
++            left: 0,
++            margin: 0,
++            padding: 0,
++            border: "none"
++          }, "important");
++          var ctm = svg[0][0].getScreenCTM();
++          d3_mouse_bug44083 = !(ctm.f || ctm.e);
++          svg.remove();
+         }
+       }
++      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX, 
++      point.y = e.clientY;
++      point = point.matrixTransform(container.getScreenCTM().inverse());
++      return [ point.x, point.y ];
+     }
+-    return d3_selection(subgroups);
+-  };
+-  function d3_selection_selectorAll(selector) {
+-    return typeof selector === "function" ? selector : function() {
+-      return d3_selectAll(selector, this);
+-    };
++    var rect = container.getBoundingClientRect();
++    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
+   }
+-  var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
+-  var d3_nsPrefix = {
+-    svg: "http://www.w3.org/2000/svg",
+-    xhtml: d3_nsXhtml,
+-    xlink: "http://www.w3.org/1999/xlink",
+-    xml: "http://www.w3.org/XML/1998/namespace",
+-    xmlns: "http://www.w3.org/2000/xmlns/"
+-  };
+-  d3.ns = {
+-    prefix: d3_nsPrefix,
+-    qualify: function(name) {
+-      var i = name.indexOf(":"), prefix = name;
+-      if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
+-      return d3_nsPrefix.hasOwnProperty(prefix) ? {
+-        space: d3_nsPrefix[prefix],
+-        local: name
+-      } : name;
+-    }
+-  };
+-  d3_selectionPrototype.attr = function(name, value) {
+-    if (arguments.length < 2) {
+-      if (typeof name === "string") {
+-        var node = this.node();
+-        name = d3.ns.qualify(name);
+-        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
++  d3.touch = function(container, touches, identifier) {
++    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
++    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
++      if ((touch = touches[i]).identifier === identifier) {
++        return d3_mousePoint(container, touch);
+       }
+-      for (value in name) this.each(d3_selection_attr(value, name[value]));
+-      return this;
+     }
+-    return this.each(d3_selection_attr(name, value));
+   };
+-  function d3_selection_attr(name, value) {
+-    name = d3.ns.qualify(name);
+-    function attrNull() {
+-      this.removeAttribute(name);
+-    }
+-    function attrNullNS() {
+-      this.removeAttributeNS(name.space, name.local);
+-    }
+-    function attrConstant() {
+-      this.setAttribute(name, value);
+-    }
+-    function attrConstantNS() {
+-      this.setAttributeNS(name.space, name.local, value);
+-    }
+-    function attrFunction() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
+-    }
+-    function attrFunctionNS() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
++  d3.behavior.drag = function() {
++    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
++    function drag() {
++      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
+     }
+-    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
+-  }
+-  function d3_collapse(s) {
+-    return s.trim().replace(/\s+/g, " ");
+-  }
+-  d3_selectionPrototype.classed = function(name, value) {
+-    if (arguments.length < 2) {
+-      if (typeof name === "string") {
+-        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
+-        if (value = node.classList) {
+-          while (++i < n) if (!value.contains(name[i])) return false;
++    function dragstart(id, position, subject, move, end) {
++      return function() {
++        var that = this, target = d3.event.target.correspondingElement || d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
++        if (origin) {
++          dragOffset = origin.apply(that, arguments);
++          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
+         } else {
+-          value = node.getAttribute("class");
+-          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
++          dragOffset = [ 0, 0 ];
+         }
+-        return true;
+-      }
+-      for (value in name) this.each(d3_selection_classed(value, name[value]));
+-      return this;
++        dispatch({
++          type: "dragstart"
++        });
++        function moved() {
++          var position1 = position(parent, dragId), dx, dy;
++          if (!position1) return;
++          dx = position1[0] - position0[0];
++          dy = position1[1] - position0[1];
++          dragged |= dx | dy;
++          position0 = position1;
++          dispatch({
++            type: "drag",
++            x: position1[0] + dragOffset[0],
++            y: position1[1] + dragOffset[1],
++            dx: dx,
++            dy: dy
++          });
++        }
++        function ended() {
++          if (!position(parent, dragId)) return;
++          dragSubject.on(move + dragName, null).on(end + dragName, null);
++          dragRestore(dragged);
++          dispatch({
++            type: "dragend"
++          });
++        }
++      };
+     }
+-    return this.each(d3_selection_classed(name, value));
++    drag.origin = function(x) {
++      if (!arguments.length) return origin;
++      origin = x;
++      return drag;
++    };
++    return d3.rebind(drag, event, "on");
+   };
+-  function d3_selection_classedRe(name) {
+-    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
++  function d3_behavior_dragTouchId() {
++    return d3.event.changedTouches[0].identifier;
+   }
+-  function d3_selection_classes(name) {
+-    return (name + "").trim().split(/^|\s+/);
++  d3.touches = function(container, touches) {
++    if (arguments.length < 2) touches = d3_eventSource().touches;
++    return touches ? d3_array(touches).map(function(touch) {
++      var point = d3_mousePoint(container, touch);
++      point.identifier = touch.identifier;
++      return point;
++    }) : [];
++  };
++  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
++  function d3_sgn(x) {
++    return x > 0 ? 1 : x < 0 ? -1 : 0;
+   }
+-  function d3_selection_classed(name, value) {
+-    name = d3_selection_classes(name).map(d3_selection_classedName);
+-    var n = name.length;
+-    function classedConstant() {
+-      var i = -1;
+-      while (++i < n) name[i](this, value);
+-    }
+-    function classedFunction() {
+-      var i = -1, x = value.apply(this, arguments);
+-      while (++i < n) name[i](this, x);
+-    }
+-    return typeof value === "function" ? classedFunction : classedConstant;
++  function d3_cross2d(a, b, c) {
++    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
+   }
+-  function d3_selection_classedName(name) {
+-    var re = d3_selection_classedRe(name);
+-    return function(node, value) {
+-      if (c = node.classList) return value ? c.add(name) : c.remove(name);
+-      var c = node.getAttribute("class") || "";
+-      if (value) {
+-        re.lastIndex = 0;
+-        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
+-      } else {
+-        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
+-      }
+-    };
++  function d3_acos(x) {
++    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
+   }
+-  d3_selectionPrototype.style = function(name, value, priority) {
+-    var n = arguments.length;
+-    if (n < 3) {
+-      if (typeof name !== "string") {
+-        if (n < 2) value = "";
+-        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
+-        return this;
+-      }
+-      if (n < 2) {
+-        var node = this.node();
+-        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
+-      }
+-      priority = "";
++  function d3_asin(x) {
++    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
++  }
++  function d3_sinh(x) {
++    return ((x = Math.exp(x)) - 1 / x) / 2;
++  }
++  function d3_cosh(x) {
++    return ((x = Math.exp(x)) + 1 / x) / 2;
++  }
++  function d3_tanh(x) {
++    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
++  }
++  function d3_haversin(x) {
++    return (x = Math.sin(x / 2)) * x;
++  }
++  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
++  d3.interpolateZoom = function(p0, p1) {
++    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2], dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, i, S;
++    if (d2 < ε2) {
++      S = Math.log(w1 / w0) / ρ;
++      i = function(t) {
++        return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * t * S) ];
++      };
++    } else {
++      var d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
++      S = (r1 - r0) / ρ;
++      i = function(t) {
++        var s = t * S, coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
++        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
++      };
+     }
+-    return this.each(d3_selection_style(name, value, priority));
++    i.duration = S * 1e3;
++    return i;
+   };
+-  function d3_selection_style(name, value, priority) {
+-    function styleNull() {
+-      this.style.removeProperty(name);
++  d3.behavior.zoom = function() {
++    var view = {
++      x: 0,
++      y: 0,
++      k: 1
++    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
++    if (!d3_behavior_zoomWheel) {
++      d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
++        return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
++      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
++        return d3.event.wheelDelta;
++      }, "mousewheel") : (d3_behavior_zoomDelta = function() {
++        return -d3.event.detail;
++      }, "MozMousePixelScroll");
+     }
+-    function styleConstant() {
+-      this.style.setProperty(name, value, priority);
++    function zoom(g) {
++      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
+     }
+-    function styleFunction() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
++    zoom.event = function(g) {
++      g.each(function() {
++        var dispatch = event.of(this, arguments), view1 = view;
++        if (d3_transitionInheritId) {
++          d3.select(this).transition().each("start.zoom", function() {
++            view = this.__chart__ || {
++              x: 0,
++              y: 0,
++              k: 1
++            };
++            zoomstarted(dispatch);
++          }).tween("zoom:zoom", function() {
++            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
++            return function(t) {
++              var l = i(t), k = dx / l[2];
++              this.__chart__ = view = {
++                x: cx - l[0] * k,
++                y: cy - l[1] * k,
++                k: k
++              };
++              zoomed(dispatch);
++            };
++          }).each("interrupt.zoom", function() {
++            zoomended(dispatch);
++          }).each("end.zoom", function() {
++            zoomended(dispatch);
++          });
++        } else {
++          this.__chart__ = view;
++          zoomstarted(dispatch);
++          zoomed(dispatch);
++          zoomended(dispatch);
++        }
++      });
++    };
++    zoom.translate = function(_) {
++      if (!arguments.length) return [ view.x, view.y ];
++      view = {
++        x: +_[0],
++        y: +_[1],
++        k: view.k
++      };
++      rescale();
++      return zoom;
++    };
++    zoom.scale = function(_) {
++      if (!arguments.length) return view.k;
++      view = {
++        x: view.x,
++        y: view.y,
++        k: null
++      };
++      scaleTo(+_);
++      rescale();
++      return zoom;
++    };
++    zoom.scaleExtent = function(_) {
++      if (!arguments.length) return scaleExtent;
++      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
++      return zoom;
++    };
++    zoom.center = function(_) {
++      if (!arguments.length) return center;
++      center = _ && [ +_[0], +_[1] ];
++      return zoom;
++    };
++    zoom.size = function(_) {
++      if (!arguments.length) return size;
++      size = _ && [ +_[0], +_[1] ];
++      return zoom;
++    };
++    zoom.duration = function(_) {
++      if (!arguments.length) return duration;
++      duration = +_;
++      return zoom;
++    };
++    zoom.x = function(z) {
++      if (!arguments.length) return x1;
++      x1 = z;
++      x0 = z.copy();
++      view = {
++        x: 0,
++        y: 0,
++        k: 1
++      };
++      return zoom;
++    };
++    zoom.y = function(z) {
++      if (!arguments.length) return y1;
++      y1 = z;
++      y0 = z.copy();
++      view = {
++        x: 0,
++        y: 0,
++        k: 1
++      };
++      return zoom;
++    };
++    function location(p) {
++      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
+     }
+-    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
+-  }
+-  d3_selectionPrototype.property = function(name, value) {
+-    if (arguments.length < 2) {
+-      if (typeof name === "string") return this.node()[name];
+-      for (value in name) this.each(d3_selection_property(value, name[value]));
+-      return this;
++    function point(l) {
++      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
+     }
+-    return this.each(d3_selection_property(name, value));
+-  };
+-  function d3_selection_property(name, value) {
+-    function propertyNull() {
+-      delete this[name];
++    function scaleTo(s) {
++      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
+     }
+-    function propertyConstant() {
+-      this[name] = value;
++    function translateTo(p, l) {
++      l = point(l);
++      view.x += p[0] - l[0];
++      view.y += p[1] - l[1];
+     }
+-    function propertyFunction() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) delete this[name]; else this[name] = x;
++    function zoomTo(that, p, l, k) {
++      that.__chart__ = {
++        x: view.x,
++        y: view.y,
++        k: view.k
++      };
++      scaleTo(Math.pow(2, k));
++      translateTo(center0 = p, l);
++      that = d3.select(that);
++      if (duration > 0) that = that.transition().duration(duration);
++      that.call(zoom.event);
+     }
+-    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
+-  }
+-  d3_selectionPrototype.text = function(value) {
+-    return arguments.length ? this.each(typeof value === "function" ? function() {
+-      var v = value.apply(this, arguments);
+-      this.textContent = v == null ? "" : v;
+-    } : value == null ? function() {
+-      this.textContent = "";
+-    } : function() {
+-      this.textContent = value;
+-    }) : this.node().textContent;
+-  };
+-  d3_selectionPrototype.html = function(value) {
+-    return arguments.length ? this.each(typeof value === "function" ? function() {
+-      var v = value.apply(this, arguments);
+-      this.innerHTML = v == null ? "" : v;
+-    } : value == null ? function() {
+-      this.innerHTML = "";
+-    } : function() {
+-      this.innerHTML = value;
+-    }) : this.node().innerHTML;
+-  };
+-  d3_selectionPrototype.append = function(name) {
+-    name = d3_selection_creator(name);
+-    return this.select(function() {
+-      return this.appendChild(name.apply(this, arguments));
+-    });
+-  };
+-  function d3_selection_creator(name) {
+-    function create() {
+-      var document = this.ownerDocument, namespace = this.namespaceURI;
+-      return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
++    function rescale() {
++      if (x1) x1.domain(x0.range().map(function(x) {
++        return (x - view.x) / view.k;
++      }).map(x0.invert));
++      if (y1) y1.domain(y0.range().map(function(y) {
++        return (y - view.y) / view.k;
++      }).map(y0.invert));
+     }
+-    function createNS() {
+-      return this.ownerDocument.createElementNS(name.space, name.local);
++    function zoomstarted(dispatch) {
++      if (!zooming++) dispatch({
++        type: "zoomstart"
++      });
+     }
+-    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
+-  }
+-  d3_selectionPrototype.insert = function(name, before) {
+-    name = d3_selection_creator(name);
+-    before = d3_selection_selector(before);
+-    return this.select(function() {
+-      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
+-    });
+-  };
+-  d3_selectionPrototype.remove = function() {
+-    return this.each(d3_selectionRemove);
+-  };
+-  function d3_selectionRemove() {
+-    var parent = this.parentNode;
+-    if (parent) parent.removeChild(this);
+-  }
+-  d3_selectionPrototype.data = function(value, key) {
+-    var i = -1, n = this.length, group, node;
+-    if (!arguments.length) {
+-      value = new Array(n = (group = this[0]).length);
+-      while (++i < n) {
+-        if (node = group[i]) {
+-          value[i] = node.__data__;
++    function zoomed(dispatch) {
++      rescale();
++      dispatch({
++        type: "zoom",
++        scale: view.k,
++        translate: [ view.x, view.y ]
++      });
++    }
++    function zoomended(dispatch) {
++      if (!--zooming) dispatch({
++        type: "zoomend"
++      }), center0 = null;
++    }
++    function mousedowned() {
++      var that = this, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
++      d3_selection_interrupt.call(that);
++      zoomstarted(dispatch);
++      function moved() {
++        dragged = 1;
++        translateTo(d3.mouse(that), location0);
++        zoomed(dispatch);
++      }
++      function ended() {
++        subject.on(mousemove, null).on(mouseup, null);
++        dragRestore(dragged);
++        zoomended(dispatch);
++      }
++    }
++    function touchstarted() {
++      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
++      started();
++      zoomstarted(dispatch);
++      subject.on(mousedown, null).on(touchstart, started);
++      function relocate() {
++        var touches = d3.touches(that);
++        scale0 = view.k;
++        touches.forEach(function(t) {
++          if (t.identifier in locations0) locations0[t.identifier] = location(t);
++        });
++        return touches;
++      }
++      function started() {
++        var target = d3.event.target;
++        d3.select(target).on(touchmove, moved).on(touchend, ended);
++        targets.push(target);
++        var changed = d3.event.changedTouches;
++        for (var i = 0, n = changed.length; i < n; ++i) {
++          locations0[changed[i].identifier] = null;
++        }
++        var touches = relocate(), now = Date.now();
++        if (touches.length === 1) {
++          if (now - touchtime < 500) {
++            var p = touches[0];
++            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
++            d3_eventPreventDefault();
++          }
++          touchtime = now;
++        } else if (touches.length > 1) {
++          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
++          distance0 = dx * dx + dy * dy;
+         }
+       }
+-      return value;
+-    }
+-    function bind(group, groupData) {
+-      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
+-      if (key) {
+-        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
+-        for (i = -1; ++i < n; ) {
+-          if (node = group[i]) {
+-            if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
+-              exitNodes[i] = node;
+-            } else {
+-              nodeByKeyValue.set(keyValue, node);
+-            }
+-            keyValues[i] = keyValue;
++      function moved() {
++        var touches = d3.touches(that), p0, l0, p1, l1;
++        d3_selection_interrupt.call(that);
++        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
++          p1 = touches[i];
++          if (l1 = locations0[p1.identifier]) {
++            if (l0) break;
++            p0 = p1, l0 = l1;
+           }
+         }
+-        for (i = -1; ++i < m; ) {
+-          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
+-            enterNodes[i] = d3_selection_dataNode(nodeData);
+-          } else if (node !== true) {
+-            updateNodes[i] = node;
+-            node.__data__ = nodeData;
+-          }
+-          nodeByKeyValue.set(keyValue, true);
++        if (l1) {
++          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
++          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
++          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
++          scaleTo(scale1 * scale0);
+         }
+-        for (i = -1; ++i < n; ) {
+-          if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
+-            exitNodes[i] = group[i];
++        touchtime = null;
++        translateTo(p0, l0);
++        zoomed(dispatch);
++      }
++      function ended() {
++        if (d3.event.touches.length) {
++          var changed = d3.event.changedTouches;
++          for (var i = 0, n = changed.length; i < n; ++i) {
++            delete locations0[changed[i].identifier];
+           }
+-        }
+-      } else {
+-        for (i = -1; ++i < n0; ) {
+-          node = group[i];
+-          nodeData = groupData[i];
+-          if (node) {
+-            node.__data__ = nodeData;
+-            updateNodes[i] = node;
+-          } else {
+-            enterNodes[i] = d3_selection_dataNode(nodeData);
++          for (var identifier in locations0) {
++            return void relocate();
+           }
+         }
+-        for (;i < m; ++i) {
+-          enterNodes[i] = d3_selection_dataNode(groupData[i]);
+-        }
+-        for (;i < n; ++i) {
+-          exitNodes[i] = group[i];
+-        }
++        d3.selectAll(targets).on(zoomName, null);
++        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
++        dragRestore();
++        zoomended(dispatch);
+       }
+-      enterNodes.update = updateNodes;
+-      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
+-      enter.push(enterNodes);
+-      update.push(updateNodes);
+-      exit.push(exitNodes);
+     }
+-    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
+-    if (typeof value === "function") {
+-      while (++i < n) {
+-        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
+-      }
+-    } else {
+-      while (++i < n) {
+-        bind(group = this[i], value);
+-      }
++    function mousewheeled() {
++      var dispatch = event.of(this, arguments);
++      if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this), 
++      translate0 = location(center0 = center || d3.mouse(this)), zoomstarted(dispatch);
++      mousewheelTimer = setTimeout(function() {
++        mousewheelTimer = null;
++        zoomended(dispatch);
++      }, 50);
++      d3_eventPreventDefault();
++      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
++      translateTo(center0, translate0);
++      zoomed(dispatch);
+     }
+-    update.enter = function() {
+-      return enter;
+-    };
+-    update.exit = function() {
+-      return exit;
+-    };
+-    return update;
++    function dblclicked() {
++      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
++      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
++    }
++    return d3.rebind(zoom, event, "on");
+   };
+-  function d3_selection_dataNode(data) {
+-    return {
+-      __data__: data
+-    };
++  var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
++  d3.color = d3_color;
++  function d3_color() {}
++  d3_color.prototype.toString = function() {
++    return this.rgb() + "";
++  };
++  d3.hsl = d3_hsl;
++  function d3_hsl(h, s, l) {
++    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
+   }
+-  d3_selectionPrototype.datum = function(value) {
+-    return arguments.length ? this.property("__data__", value) : this.property("__data__");
++  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
++  d3_hslPrototype.brighter = function(k) {
++    k = Math.pow(.7, arguments.length ? k : 1);
++    return new d3_hsl(this.h, this.s, this.l / k);
+   };
+-  d3_selectionPrototype.filter = function(filter) {
+-    var subgroups = [], subgroup, group, node;
+-    if (typeof filter !== "function") filter = d3_selection_filter(filter);
+-    for (var j = 0, m = this.length; j < m; j++) {
+-      subgroups.push(subgroup = []);
+-      subgroup.parentNode = (group = this[j]).parentNode;
+-      for (var i = 0, n = group.length; i < n; i++) {
+-        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
+-          subgroup.push(node);
+-        }
+-      }
+-    }
+-    return d3_selection(subgroups);
++  d3_hslPrototype.darker = function(k) {
++    k = Math.pow(.7, arguments.length ? k : 1);
++    return new d3_hsl(this.h, this.s, k * this.l);
+   };
+-  function d3_selection_filter(selector) {
+-    return function() {
+-      return d3_selectMatches(this, selector);
+-    };
+-  }
+-  d3_selectionPrototype.order = function() {
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
+-        if (node = group[i]) {
+-          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
+-          next = node;
+-        }
+-      }
++  d3_hslPrototype.rgb = function() {
++    return d3_hsl_rgb(this.h, this.s, this.l);
++  };
++  function d3_hsl_rgb(h, s, l) {
++    var m1, m2;
++    h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
++    s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
++    l = l < 0 ? 0 : l > 1 ? 1 : l;
++    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
++    m1 = 2 * l - m2;
++    function v(h) {
++      if (h > 360) h -= 360; else if (h < 0) h += 360;
++      if (h < 60) return m1 + (m2 - m1) * h / 60;
++      if (h < 180) return m2;
++      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
++      return m1;
+     }
+-    return this;
++    function vv(h) {
++      return Math.round(v(h) * 255);
++    }
++    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
++  }
++  d3.hcl = d3_hcl;
++  function d3_hcl(h, c, l) {
++    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
++  }
++  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
++  d3_hclPrototype.brighter = function(k) {
++    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
+   };
+-  d3_selectionPrototype.sort = function(comparator) {
+-    comparator = d3_selection_sortComparator.apply(this, arguments);
+-    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
+-    return this.order();
++  d3_hclPrototype.darker = function(k) {
++    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
+   };
+-  function d3_selection_sortComparator(comparator) {
+-    if (!arguments.length) comparator = d3_ascending;
+-    return function(a, b) {
+-      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
+-    };
++  d3_hclPrototype.rgb = function() {
++    return d3_hcl_lab(this.h, this.c, this.l).rgb();
++  };
++  function d3_hcl_lab(h, c, l) {
++    if (isNaN(h)) h = 0;
++    if (isNaN(c)) c = 0;
++    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
+   }
+-  d3_selectionPrototype.each = function(callback) {
+-    return d3_selection_each(this, function(node, i, j) {
+-      callback.call(node, node.__data__, i, j);
+-    });
++  d3.lab = d3_lab;
++  function d3_lab(l, a, b) {
++    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
++  }
++  var d3_lab_K = 18;
++  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
++  var d3_labPrototype = d3_lab.prototype = new d3_color();
++  d3_labPrototype.brighter = function(k) {
++    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
+   };
+-  function d3_selection_each(groups, callback) {
+-    for (var j = 0, m = groups.length; j < m; j++) {
+-      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
+-        if (node = group[i]) callback(node, i, j);
+-      }
+-    }
+-    return groups;
++  d3_labPrototype.darker = function(k) {
++    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
++  };
++  d3_labPrototype.rgb = function() {
++    return d3_lab_rgb(this.l, this.a, this.b);
++  };
++  function d3_lab_rgb(l, a, b) {
++    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
++    x = d3_lab_xyz(x) * d3_lab_X;
++    y = d3_lab_xyz(y) * d3_lab_Y;
++    z = d3_lab_xyz(z) * d3_lab_Z;
++    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
+   }
+-  d3_selectionPrototype.call = function(callback) {
+-    var args = d3_array(arguments);
+-    callback.apply(args[0] = this, args);
+-    return this;
++  function d3_lab_hcl(l, a, b) {
++    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
++  }
++  function d3_lab_xyz(x) {
++    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
++  }
++  function d3_xyz_lab(x) {
++    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
++  }
++  function d3_xyz_rgb(r) {
++    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
++  }
++  d3.rgb = d3_rgb;
++  function d3_rgb(r, g, b) {
++    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
++  }
++  function d3_rgbNumber(value) {
++    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
++  }
++  function d3_rgbString(value) {
++    return d3_rgbNumber(value) + "";
++  }
++  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
++  d3_rgbPrototype.brighter = function(k) {
++    k = Math.pow(.7, arguments.length ? k : 1);
++    var r = this.r, g = this.g, b = this.b, i = 30;
++    if (!r && !g && !b) return new d3_rgb(i, i, i);
++    if (r && r < i) r = i;
++    if (g && g < i) g = i;
++    if (b && b < i) b = i;
++    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
+   };
+-  d3_selectionPrototype.empty = function() {
+-    return !this.node();
++  d3_rgbPrototype.darker = function(k) {
++    k = Math.pow(.7, arguments.length ? k : 1);
++    return new d3_rgb(k * this.r, k * this.g, k * this.b);
+   };
+-  d3_selectionPrototype.node = function() {
+-    for (var j = 0, m = this.length; j < m; j++) {
+-      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
+-        var node = group[i];
+-        if (node) return node;
+-      }
+-    }
+-    return null;
++  d3_rgbPrototype.hsl = function() {
++    return d3_rgb_hsl(this.r, this.g, this.b);
+   };
+-  d3_selectionPrototype.size = function() {
+-    var n = 0;
+-    d3_selection_each(this, function() {
+-      ++n;
+-    });
+-    return n;
++  d3_rgbPrototype.toString = function() {
++    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
+   };
+-  function d3_selection_enter(selection) {
+-    d3_subclass(selection, d3_selection_enterPrototype);
+-    return selection;
++  function d3_rgb_hex(v) {
++    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
++  }
++  function d3_rgb_parse(format, rgb, hsl) {
++    var r = 0, g = 0, b = 0, m1, m2, color;
++    m1 = /([a-z]+)\((.*)\)/.exec(format = format.toLowerCase());
++    if (m1) {
++      m2 = m1[2].split(",");
++      switch (m1[1]) {
++       case "hsl":
++        {
++          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
++        }
++
++       case "rgb":
++        {
++          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
++        }
++      }
++    }
++    if (color = d3_rgb_names.get(format)) {
++      return rgb(color.r, color.g, color.b);
++    }
++    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
++      if (format.length === 4) {
++        r = (color & 3840) >> 4;
++        r = r >> 4 | r;
++        g = color & 240;
++        g = g >> 4 | g;
++        b = color & 15;
++        b = b << 4 | b;
++      } else if (format.length === 7) {
++        r = (color & 16711680) >> 16;
++        g = (color & 65280) >> 8;
++        b = color & 255;
++      }
++    }
++    return rgb(r, g, b);
++  }
++  function d3_rgb_hsl(r, g, b) {
++    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
++    if (d) {
++      s = l < .5 ? d / (max + min) : d / (2 - max - min);
++      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
++      h *= 60;
++    } else {
++      h = NaN;
++      s = l > 0 && l < 1 ? 0 : h;
++    }
++    return new d3_hsl(h, s, l);
++  }
++  function d3_rgb_lab(r, g, b) {
++    r = d3_rgb_xyz(r);
++    g = d3_rgb_xyz(g);
++    b = d3_rgb_xyz(b);
++    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
++    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
++  }
++  function d3_rgb_xyz(r) {
++    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
++  }
++  function d3_rgb_parseNumber(c) {
++    var f = parseFloat(c);
++    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
++  }
++  var d3_rgb_names = d3.map({
++    aliceblue: 15792383,
++    antiquewhite: 16444375,
++    aqua: 65535,
++    aquamarine: 8388564,
++    azure: 15794175,
++    beige: 16119260,
++    bisque: 16770244,
++    black: 0,
++    blanchedalmond: 16772045,
++    blue: 255,
++    blueviolet: 9055202,
++    brown: 10824234,
++    burlywood: 14596231,
++    cadetblue: 6266528,
++    chartreuse: 8388352,
++    chocolate: 13789470,
++    coral: 16744272,
++    cornflowerblue: 6591981,
++    cornsilk: 16775388,
++    crimson: 14423100,
++    cyan: 65535,
++    darkblue: 139,
++    darkcyan: 35723,
++    darkgoldenrod: 12092939,
++    darkgray: 11119017,
++    darkgreen: 25600,
++    darkgrey: 11119017,
++    darkkhaki: 12433259,
++    darkmagenta: 9109643,
++    darkolivegreen: 5597999,
++    darkorange: 16747520,
++    darkorchid: 10040012,
++    darkred: 9109504,
++    darksalmon: 15308410,
++    darkseagreen: 9419919,
++    darkslateblue: 4734347,
++    darkslategray: 3100495,
++    darkslategrey: 3100495,
++    darkturquoise: 52945,
++    darkviolet: 9699539,
++    deeppink: 16716947,
++    deepskyblue: 49151,
++    dimgray: 6908265,
++    dimgrey: 6908265,
++    dodgerblue: 2003199,
++    firebrick: 11674146,
++    floralwhite: 16775920,
++    forestgreen: 2263842,
++    fuchsia: 16711935,
++    gainsboro: 14474460,
++    ghostwhite: 16316671,
++    gold: 16766720,
++    goldenrod: 14329120,
++    gray: 8421504,
++    green: 32768,
++    greenyellow: 11403055,
++    grey: 8421504,
++    honeydew: 15794160,
++    hotpink: 16738740,
++    indianred: 13458524,
++    indigo: 4915330,
++    ivory: 16777200,
++    khaki: 15787660,
++    lavender: 15132410,
++    lavenderblush: 16773365,
++    lawngreen: 8190976,
++    lemonchiffon: 16775885,
++    lightblue: 11393254,
++    lightcoral: 15761536,
++    lightcyan: 14745599,
++    lightgoldenrodyellow: 16448210,
++    lightgray: 13882323,
++    lightgreen: 9498256,
++    lightgrey: 13882323,
++    lightpink: 16758465,
++    lightsalmon: 16752762,
++    lightseagreen: 2142890,
++    lightskyblue: 8900346,
++    lightslategray: 7833753,
++    lightslategrey: 7833753,
++    lightsteelblue: 11584734,
++    lightyellow: 16777184,
++    lime: 65280,
++    limegreen: 3329330,
++    linen: 16445670,
++    magenta: 16711935,
++    maroon: 8388608,
++    mediumaquamarine: 6737322,
++    mediumblue: 205,
++    mediumorchid: 12211667,
++    mediumpurple: 9662683,
++    mediumseagreen: 3978097,
++    mediumslateblue: 8087790,
++    mediumspringgreen: 64154,
++    mediumturquoise: 4772300,
++    mediumvioletred: 13047173,
++    midnightblue: 1644912,
++    mintcream: 16121850,
++    mistyrose: 16770273,
++    moccasin: 16770229,
++    navajowhite: 16768685,
++    navy: 128,
++    oldlace: 16643558,
++    olive: 8421376,
++    olivedrab: 7048739,
++    orange: 16753920,
++    orangered: 16729344,
++    orchid: 14315734,
++    palegoldenrod: 15657130,
++    palegreen: 10025880,
++    paleturquoise: 11529966,
++    palevioletred: 14381203,
++    papayawhip: 16773077,
++    peachpuff: 16767673,
++    peru: 13468991,
++    pink: 16761035,
++    plum: 14524637,
++    powderblue: 11591910,
++    purple: 8388736,
++    rebeccapurple: 6697881,
++    red: 16711680,
++    rosybrown: 12357519,
++    royalblue: 4286945,
++    saddlebrown: 9127187,
++    salmon: 16416882,
++    sandybrown: 16032864,
++    seagreen: 3050327,
++    seashell: 16774638,
++    sienna: 10506797,
++    silver: 12632256,
++    skyblue: 8900331,
++    slateblue: 6970061,
++    slategray: 7372944,
++    slategrey: 7372944,
++    snow: 16775930,
++    springgreen: 65407,
++    steelblue: 4620980,
++    tan: 13808780,
++    teal: 32896,
++    thistle: 14204888,
++    tomato: 16737095,
++    turquoise: 4251856,
++    violet: 15631086,
++    wheat: 16113331,
++    white: 16777215,
++    whitesmoke: 16119285,
++    yellow: 16776960,
++    yellowgreen: 10145074
++  });
++  d3_rgb_names.forEach(function(key, value) {
++    d3_rgb_names.set(key, d3_rgbNumber(value));
++  });
++  function d3_functor(v) {
++    return typeof v === "function" ? v : function() {
++      return v;
++    };
+   }
+-  var d3_selection_enterPrototype = [];
+-  d3.selection.enter = d3_selection_enter;
+-  d3.selection.enter.prototype = d3_selection_enterPrototype;
+-  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
+-  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
+-  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
+-  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
+-  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
+-  d3_selection_enterPrototype.select = function(selector) {
+-    var subgroups = [], subgroup, subnode, upgroup, group, node;
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      upgroup = (group = this[j]).update;
+-      subgroups.push(subgroup = []);
+-      subgroup.parentNode = group.parentNode;
+-      for (var i = -1, n = group.length; ++i < n; ) {
+-        if (node = group[i]) {
+-          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
+-          subnode.__data__ = node.__data__;
+-        } else {
+-          subgroup.push(null);
+-        }
+-      }
+-    }
+-    return d3_selection(subgroups);
+-  };
+-  d3_selection_enterPrototype.insert = function(name, before) {
+-    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
+-    return d3_selectionPrototype.insert.call(this, name, before);
+-  };
+-  function d3_selection_enterInsertBefore(enter) {
+-    var i0, j0;
+-    return function(d, i, j) {
+-      var group = enter[j].update, n = group.length, node;
+-      if (j != j0) j0 = j, i0 = 0;
+-      if (i >= i0) i0 = i + 1;
+-      while (!(node = group[i0]) && ++i0 < n) ;
+-      return node;
++  d3.functor = d3_functor;
++  d3.xhr = d3_xhrType(d3_identity);
++  function d3_xhrType(response) {
++    return function(url, mimeType, callback) {
++      if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, 
++      mimeType = null;
++      return d3_xhr(url, mimeType, response, callback);
+     };
+   }
+-  d3.select = function(node) {
+-    var group;
+-    if (typeof node === "string") {
+-      group = [ d3_select(node, d3_document) ];
+-      group.parentNode = d3_document.documentElement;
+-    } else {
+-      group = [ node ];
+-      group.parentNode = d3_documentElement(node);
+-    }
+-    return d3_selection([ group ]);
+-  };
+-  d3.selectAll = function(nodes) {
+-    var group;
+-    if (typeof nodes === "string") {
+-      group = d3_array(d3_selectAll(nodes, d3_document));
+-      group.parentNode = d3_document.documentElement;
+-    } else {
+-      group = d3_array(nodes);
+-      group.parentNode = null;
+-    }
+-    return d3_selection([ group ]);
+-  };
+-  d3_selectionPrototype.on = function(type, listener, capture) {
+-    var n = arguments.length;
+-    if (n < 3) {
+-      if (typeof type !== "string") {
+-        if (n < 2) listener = false;
+-        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
+-        return this;
+-      }
+-      if (n < 2) return (n = this.node()["__on" + type]) && n._;
+-      capture = false;
+-    }
+-    return this.each(d3_selection_on(type, listener, capture));
+-  };
+-  function d3_selection_on(type, listener, capture) {
+-    var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
+-    if (i > 0) type = type.slice(0, i);
+-    var filter = d3_selection_onFilters.get(type);
+-    if (filter) type = filter, wrap = d3_selection_onFilter;
+-    function onRemove() {
+-      var l = this[name];
+-      if (l) {
+-        this.removeEventListener(type, l, l.$);
+-        delete this[name];
+-      }
+-    }
+-    function onAdd() {
+-      var l = wrap(listener, d3_array(arguments));
+-      onRemove.call(this);
+-      this.addEventListener(type, this[name] = l, l.$ = capture);
+-      l._ = listener;
+-    }
+-    function removeAll() {
+-      var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
+-      for (var name in this) {
+-        if (match = name.match(re)) {
+-          var l = this[name];
+-          this.removeEventListener(match[1], l, l.$);
+-          delete this[name];
++  function d3_xhr(url, mimeType, response, callback) {
++    var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
++    if (this.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
++    "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
++      request.readyState > 3 && respond();
++    };
++    function respond() {
++      var status = request.status, result;
++      if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
++        try {
++          result = response.call(xhr, request);
++        } catch (e) {
++          dispatch.error.call(xhr, e);
++          return;
+         }
++        dispatch.load.call(xhr, result);
++      } else {
++        dispatch.error.call(xhr, request);
+       }
+     }
+-    return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
+-  }
+-  var d3_selection_onFilters = d3.map({
+-    mouseenter: "mouseover",
+-    mouseleave: "mouseout"
+-  });
+-  if (d3_document) {
+-    d3_selection_onFilters.forEach(function(k) {
+-      if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
+-    });
+-  }
+-  function d3_selection_onListener(listener, argumentz) {
+-    return function(e) {
++    request.onprogress = function(event) {
+       var o = d3.event;
+-      d3.event = e;
+-      argumentz[0] = this.__data__;
++      d3.event = event;
+       try {
+-        listener.apply(this, argumentz);
++        dispatch.progress.call(xhr, request);
+       } finally {
+         d3.event = o;
+       }
+     };
+-  }
+-  function d3_selection_onFilter(listener, argumentz) {
+-    var l = d3_selection_onListener(listener, argumentz);
+-    return function(e) {
+-      var target = this, related = e.relatedTarget;
+-      if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
+-        l.call(target, e);
+-      }
++    xhr.header = function(name, value) {
++      name = (name + "").toLowerCase();
++      if (arguments.length < 2) return headers[name];
++      if (value == null) delete headers[name]; else headers[name] = value + "";
++      return xhr;
+     };
+-  }
+-  var d3_event_dragSelect, d3_event_dragId = 0;
+-  function d3_event_dragSuppress(node) {
+-    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
+-    if (d3_event_dragSelect == null) {
+-      d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
+-    }
+-    if (d3_event_dragSelect) {
+-      var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
+-      style[d3_event_dragSelect] = "none";
+-    }
+-    return function(suppressClick) {
+-      w.on(name, null);
+-      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
+-      if (suppressClick) {
+-        var off = function() {
+-          w.on(click, null);
+-        };
+-        w.on(click, function() {
+-          d3_eventPreventDefault();
+-          off();
+-        }, true);
+-        setTimeout(off, 0);
+-      }
++    xhr.mimeType = function(value) {
++      if (!arguments.length) return mimeType;
++      mimeType = value == null ? null : value + "";
++      return xhr;
+     };
+-  }
+-  d3.mouse = function(container) {
+-    return d3_mousePoint(container, d3_eventSource());
+-  };
+-  var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
+-  function d3_mousePoint(container, e) {
+-    if (e.changedTouches) e = e.changedTouches[0];
+-    var svg = container.ownerSVGElement || container;
+-    if (svg.createSVGPoint) {
+-      var point = svg.createSVGPoint();
+-      if (d3_mouse_bug44083 < 0) {
+-        var window = d3_window(container);
+-        if (window.scrollX || window.scrollY) {
+-          svg = d3.select("body").append("svg").style({
+-            position: "absolute",
+-            top: 0,
+-            left: 0,
+-            margin: 0,
+-            padding: 0,
+-            border: "none"
+-          }, "important");
+-          var ctm = svg[0][0].getScreenCTM();
+-          d3_mouse_bug44083 = !(ctm.f || ctm.e);
+-          svg.remove();
+-        }
+-      }
+-      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX, 
+-      point.y = e.clientY;
+-      point = point.matrixTransform(container.getScreenCTM().inverse());
+-      return [ point.x, point.y ];
+-    }
+-    var rect = container.getBoundingClientRect();
+-    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
+-  }
+-  d3.touch = function(container, touches, identifier) {
+-    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
+-    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
+-      if ((touch = touches[i]).identifier === identifier) {
+-        return d3_mousePoint(container, touch);
+-      }
+-    }
+-  };
+-  d3.behavior.drag = function() {
+-    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
+-    function drag() {
+-      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
+-    }
+-    function dragstart(id, position, subject, move, end) {
+-      return function() {
+-        var that = this, target = d3.event.target.correspondingElement || d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
+-        if (origin) {
+-          dragOffset = origin.apply(that, arguments);
+-          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
+-        } else {
+-          dragOffset = [ 0, 0 ];
+-        }
+-        dispatch({
+-          type: "dragstart"
+-        });
+-        function moved() {
+-          var position1 = position(parent, dragId), dx, dy;
+-          if (!position1) return;
+-          dx = position1[0] - position0[0];
+-          dy = position1[1] - position0[1];
+-          dragged |= dx | dy;
+-          position0 = position1;
+-          dispatch({
+-            type: "drag",
+-            x: position1[0] + dragOffset[0],
+-            y: position1[1] + dragOffset[1],
+-            dx: dx,
+-            dy: dy
+-          });
+-        }
+-        function ended() {
+-          if (!position(parent, dragId)) return;
+-          dragSubject.on(move + dragName, null).on(end + dragName, null);
+-          dragRestore(dragged);
+-          dispatch({
+-            type: "dragend"
+-          });
+-        }
++    xhr.responseType = function(value) {
++      if (!arguments.length) return responseType;
++      responseType = value;
++      return xhr;
++    };
++    xhr.response = function(value) {
++      response = value;
++      return xhr;
++    };
++    [ "get", "post" ].forEach(function(method) {
++      xhr[method] = function() {
++        return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
+       };
+-    }
+-    drag.origin = function(x) {
+-      if (!arguments.length) return origin;
+-      origin = x;
+-      return drag;
++    });
++    xhr.send = function(method, data, callback) {
++      if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
++      request.open(method, url, true);
++      if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
++      if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
++      if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
++      if (responseType != null) request.responseType = responseType;
++      if (callback != null) xhr.on("error", callback).on("load", function(request) {
++        callback(null, request);
++      });
++      dispatch.beforesend.call(xhr, request);
++      request.send(data == null ? null : data);
++      return xhr;
+     };
+-    return d3.rebind(drag, event, "on");
+-  };
+-  function d3_behavior_dragTouchId() {
+-    return d3.event.changedTouches[0].identifier;
+-  }
+-  d3.touches = function(container, touches) {
+-    if (arguments.length < 2) touches = d3_eventSource().touches;
+-    return touches ? d3_array(touches).map(function(touch) {
+-      var point = d3_mousePoint(container, touch);
+-      point.identifier = touch.identifier;
+-      return point;
+-    }) : [];
+-  };
+-  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
+-  function d3_sgn(x) {
+-    return x > 0 ? 1 : x < 0 ? -1 : 0;
+-  }
+-  function d3_cross2d(a, b, c) {
+-    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
+-  }
+-  function d3_acos(x) {
+-    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
+-  }
+-  function d3_asin(x) {
+-    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
+-  }
+-  function d3_sinh(x) {
+-    return ((x = Math.exp(x)) - 1 / x) / 2;
+-  }
+-  function d3_cosh(x) {
+-    return ((x = Math.exp(x)) + 1 / x) / 2;
++    xhr.abort = function() {
++      request.abort();
++      return xhr;
++    };
++    d3.rebind(xhr, dispatch, "on");
++    return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
+   }
+-  function d3_tanh(x) {
+-    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
++  function d3_xhr_fixCallback(callback) {
++    return callback.length === 1 ? function(error, request) {
++      callback(error == null ? request : null);
++    } : callback;
+   }
+-  function d3_haversin(x) {
+-    return (x = Math.sin(x / 2)) * x;
++  function d3_xhrHasResponse(request) {
++    var type = request.responseType;
++    return type && type !== "text" ? request.response : request.responseText;
+   }
+-  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
+-  d3.interpolateZoom = function(p0, p1) {
+-    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2], dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, i, S;
+-    if (d2 < ε2) {
+-      S = Math.log(w1 / w0) / ρ;
+-      i = function(t) {
+-        return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * t * S) ];
+-      };
+-    } else {
+-      var d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
+-      S = (r1 - r0) / ρ;
+-      i = function(t) {
+-        var s = t * S, coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
+-        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
++  d3.dsv = function(delimiter, mimeType) {
++    var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
++    function dsv(url, row, callback) {
++      if (arguments.length < 3) callback = row, row = null;
++      var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
++      xhr.row = function(_) {
++        return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
+       };
++      return xhr;
+     }
+-    i.duration = S * 1e3;
+-    return i;
+-  };
+-  d3.behavior.zoom = function() {
+-    var view = {
+-      x: 0,
+-      y: 0,
+-      k: 1
+-    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
+-    if (!d3_behavior_zoomWheel) {
+-      d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
+-        return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
+-      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
+-        return d3.event.wheelDelta;
+-      }, "mousewheel") : (d3_behavior_zoomDelta = function() {
+-        return -d3.event.detail;
+-      }, "MozMousePixelScroll");
++    function response(request) {
++      return dsv.parse(request.responseText);
+     }
+-    function zoom(g) {
+-      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
++    function typedResponse(f) {
++      return function(request) {
++        return dsv.parse(request.responseText, f);
++      };
+     }
+-    zoom.event = function(g) {
+-      g.each(function() {
+-        var dispatch = event.of(this, arguments), view1 = view;
+-        if (d3_transitionInheritId) {
+-          d3.select(this).transition().each("start.zoom", function() {
+-            view = this.__chart__ || {
+-              x: 0,
+-              y: 0,
+-              k: 1
+-            };
+-            zoomstarted(dispatch);
+-          }).tween("zoom:zoom", function() {
+-            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
+-            return function(t) {
+-              var l = i(t), k = dx / l[2];
+-              this.__chart__ = view = {
+-                x: cx - l[0] * k,
+-                y: cy - l[1] * k,
+-                k: k
+-              };
+-              zoomed(dispatch);
+-            };
+-          }).each("interrupt.zoom", function() {
+-            zoomended(dispatch);
+-          }).each("end.zoom", function() {
+-            zoomended(dispatch);
+-          });
+-        } else {
+-          this.__chart__ = view;
+-          zoomstarted(dispatch);
+-          zoomed(dispatch);
+-          zoomended(dispatch);
+-        }
++    dsv.parse = function(text, f) {
++      var o;
++      return dsv.parseRows(text, function(row, i) {
++        if (o) return o(row, i - 1);
++        var a = new Function("d", "return {" + row.map(function(name, i) {
++          return JSON.stringify(name) + ": d[" + i + "]";
++        }).join(",") + "}");
++        o = f ? function(row, i) {
++          return f(a(row), i);
++        } : a;
+       });
+     };
+-    zoom.translate = function(_) {
+-      if (!arguments.length) return [ view.x, view.y ];
+-      view = {
+-        x: +_[0],
+-        y: +_[1],
+-        k: view.k
+-      };
+-      rescale();
+-      return zoom;
+-    };
+-    zoom.scale = function(_) {
+-      if (!arguments.length) return view.k;
+-      view = {
+-        x: view.x,
+-        y: view.y,
+-        k: null
+-      };
+-      scaleTo(+_);
+-      rescale();
+-      return zoom;
+-    };
+-    zoom.scaleExtent = function(_) {
+-      if (!arguments.length) return scaleExtent;
+-      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
+-      return zoom;
+-    };
+-    zoom.center = function(_) {
+-      if (!arguments.length) return center;
+-      center = _ && [ +_[0], +_[1] ];
+-      return zoom;
+-    };
+-    zoom.size = function(_) {
+-      if (!arguments.length) return size;
+-      size = _ && [ +_[0], +_[1] ];
+-      return zoom;
++    dsv.parseRows = function(text, f) {
++      var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
++      function token() {
++        if (I >= N) return EOF;
++        if (eol) return eol = false, EOL;
++        var j = I;
++        if (text.charCodeAt(j) === 34) {
++          var i = j;
++          while (i++ < N) {
++            if (text.charCodeAt(i) === 34) {
++              if (text.charCodeAt(i + 1) !== 34) break;
++              ++i;
++            }
++          }
++          I = i + 2;
++          var c = text.charCodeAt(i + 1);
++          if (c === 13) {
++            eol = true;
++            if (text.charCodeAt(i + 2) === 10) ++I;
++          } else if (c === 10) {
++            eol = true;
++          }
++          return text.slice(j + 1, i).replace(/""/g, '"');
++        }
++        while (I < N) {
++          var c = text.charCodeAt(I++), k = 1;
++          if (c === 10) eol = true; else if (c === 13) {
++            eol = true;
++            if (text.charCodeAt(I) === 10) ++I, ++k;
++          } else if (c !== delimiterCode) continue;
++          return text.slice(j, I - k);
++        }
++        return text.slice(j);
++      }
++      while ((t = token()) !== EOF) {
++        var a = [];
++        while (t !== EOL && t !== EOF) {
++          a.push(t);
++          t = token();
++        }
++        if (f && (a = f(a, n++)) == null) continue;
++        rows.push(a);
++      }
++      return rows;
+     };
+-    zoom.duration = function(_) {
+-      if (!arguments.length) return duration;
+-      duration = +_;
+-      return zoom;
++    dsv.format = function(rows) {
++      if (Array.isArray(rows[0])) return dsv.formatRows(rows);
++      var fieldSet = new d3_Set(), fields = [];
++      rows.forEach(function(row) {
++        for (var field in row) {
++          if (!fieldSet.has(field)) {
++            fields.push(fieldSet.add(field));
++          }
++        }
++      });
++      return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
++        return fields.map(function(field) {
++          return formatValue(row[field]);
++        }).join(delimiter);
++      })).join("\n");
+     };
+-    zoom.x = function(z) {
+-      if (!arguments.length) return x1;
+-      x1 = z;
+-      x0 = z.copy();
+-      view = {
+-        x: 0,
+-        y: 0,
+-        k: 1
+-      };
+-      return zoom;
++    dsv.formatRows = function(rows) {
++      return rows.map(formatRow).join("\n");
+     };
+-    zoom.y = function(z) {
+-      if (!arguments.length) return y1;
+-      y1 = z;
+-      y0 = z.copy();
+-      view = {
+-        x: 0,
+-        y: 0,
+-        k: 1
+-      };
+-      return zoom;
++    function formatRow(row) {
++      return row.map(formatValue).join(delimiter);
++    }
++    function formatValue(text) {
++      return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
++    }
++    return dsv;
++  };
++  d3.csv = d3.dsv(",", "text/csv");
++  d3.tsv = d3.dsv("	", "text/tab-separated-values");
++  var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_frame = this[d3_vendorSymbol(this, "requestAnimationFrame")] || function(callback) {
++    setTimeout(callback, 17);
++  };
++  d3.timer = function() {
++    d3_timer.apply(this, arguments);
++  };
++  function d3_timer(callback, delay, then) {
++    var n = arguments.length;
++    if (n < 2) delay = 0;
++    if (n < 3) then = Date.now();
++    var time = then + delay, timer = {
++      c: callback,
++      t: time,
++      n: null
+     };
+-    function location(p) {
+-      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
++    if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
++    d3_timer_queueTail = timer;
++    if (!d3_timer_interval) {
++      d3_timer_timeout = clearTimeout(d3_timer_timeout);
++      d3_timer_interval = 1;
++      d3_timer_frame(d3_timer_step);
+     }
+-    function point(l) {
+-      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
++    return timer;
++  }
++  function d3_timer_step() {
++    var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
++    if (delay > 24) {
++      if (isFinite(delay)) {
++        clearTimeout(d3_timer_timeout);
++        d3_timer_timeout = setTimeout(d3_timer_step, delay);
++      }
++      d3_timer_interval = 0;
++    } else {
++      d3_timer_interval = 1;
++      d3_timer_frame(d3_timer_step);
+     }
+-    function scaleTo(s) {
+-      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
++  }
++  d3.timer.flush = function() {
++    d3_timer_mark();
++    d3_timer_sweep();
++  };
++  function d3_timer_mark() {
++    var now = Date.now(), timer = d3_timer_queueHead;
++    while (timer) {
++      if (now >= timer.t && timer.c(now - timer.t)) timer.c = null;
++      timer = timer.n;
+     }
+-    function translateTo(p, l) {
+-      l = point(l);
+-      view.x += p[0] - l[0];
+-      view.y += p[1] - l[1];
++    return now;
++  }
++  function d3_timer_sweep() {
++    var t0, t1 = d3_timer_queueHead, time = Infinity;
++    while (t1) {
++      if (t1.c) {
++        if (t1.t < time) time = t1.t;
++        t1 = (t0 = t1).n;
++      } else {
++        t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
++      }
+     }
+-    function zoomTo(that, p, l, k) {
+-      that.__chart__ = {
+-        x: view.x,
+-        y: view.y,
+-        k: view.k
++    d3_timer_queueTail = t0;
++    return time;
++  }
++  function d3_format_precision(x, p) {
++    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
++  }
++  d3.round = function(x, n) {
++    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
++  };
++  var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
++  d3.formatPrefix = function(value, precision) {
++    var i = 0;
++    if (value = +value) {
++      if (value < 0) value *= -1;
++      if (precision) value = d3.round(value, d3_format_precision(value, precision));
++      i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
++      i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
++    }
++    return d3_formatPrefixes[8 + i / 3];
++  };
++  function d3_formatPrefix(d, i) {
++    var k = Math.pow(10, abs(8 - i) * 3);
++    return {
++      scale: i > 8 ? function(d) {
++        return d / k;
++      } : function(d) {
++        return d * k;
++      },
++      symbol: d
++    };
++  }
++  function d3_locale_numberFormat(locale) {
++    var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
++      var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
++      while (i > 0 && g > 0) {
++        if (length + g + 1 > width) g = Math.max(1, width - length);
++        t.push(value.substring(i -= g, i + g));
++        if ((length += g + 1) > width) break;
++        g = locale_grouping[j = (j + 1) % locale_grouping.length];
++      }
++      return t.reverse().join(locale_thousands);
++    } : d3_identity;
++    return function(specifier) {
++      var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
++      if (precision) precision = +precision.substring(1);
++      if (zfill || fill === "0" && align === "=") {
++        zfill = fill = "0";
++        align = "=";
++      }
++      switch (type) {
++       case "n":
++        comma = true;
++        type = "g";
++        break;
++
++       case "%":
++        scale = 100;
++        suffix = "%";
++        type = "f";
++        break;
++
++       case "p":
++        scale = 100;
++        suffix = "%";
++        type = "r";
++        break;
++
++       case "b":
++       case "o":
++       case "x":
++       case "X":
++        if (symbol === "#") prefix = "0" + type.toLowerCase();
++
++       case "c":
++        exponent = false;
++
++       case "d":
++        integer = true;
++        precision = 0;
++        break;
++
++       case "s":
++        scale = -1;
++        type = "r";
++        break;
++      }
++      if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
++      if (type == "r" && !precision) type = "g";
++      if (precision != null) {
++        if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
++      }
++      type = d3_format_types.get(type) || d3_format_typeDefault;
++      var zcomma = zfill && comma;
++      return function(value) {
++        var fullSuffix = suffix;
++        if (integer && value % 1) return "";
++        var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
++        if (scale < 0) {
++          var unit = d3.formatPrefix(value, precision);
++          value = unit.scale(value);
++          fullSuffix = unit.symbol + suffix;
++        } else {
++          value *= scale;
++        }
++        value = type(value, precision);
++        var i = value.lastIndexOf("."), before, after;
++        if (i < 0) {
++          var j = exponent ? value.lastIndexOf("e") : -1;
++          if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
++        } else {
++          before = value.substring(0, i);
++          after = locale_decimal + value.substring(i + 1);
++        }
++        if (!zfill && comma) before = formatGroup(before, Infinity);
++        var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
++        if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
++        negative += prefix;
++        value = before + after;
++        return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
+       };
+-      scaleTo(Math.pow(2, k));
+-      translateTo(center0 = p, l);
+-      that = d3.select(that);
+-      if (duration > 0) that = that.transition().duration(duration);
+-      that.call(zoom.event);
++    };
++  }
++  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
++  var d3_format_types = d3.map({
++    b: function(x) {
++      return x.toString(2);
++    },
++    c: function(x) {
++      return String.fromCharCode(x);
++    },
++    o: function(x) {
++      return x.toString(8);
++    },
++    x: function(x) {
++      return x.toString(16);
++    },
++    X: function(x) {
++      return x.toString(16).toUpperCase();
++    },
++    g: function(x, p) {
++      return x.toPrecision(p);
++    },
++    e: function(x, p) {
++      return x.toExponential(p);
++    },
++    f: function(x, p) {
++      return x.toFixed(p);
++    },
++    r: function(x, p) {
++      return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
+     }
+-    function rescale() {
+-      if (x1) x1.domain(x0.range().map(function(x) {
+-        return (x - view.x) / view.k;
+-      }).map(x0.invert));
+-      if (y1) y1.domain(y0.range().map(function(y) {
+-        return (y - view.y) / view.k;
+-      }).map(y0.invert));
++  });
++  function d3_format_typeDefault(x) {
++    return x + "";
++  }
++  var d3_time = d3.time = {}, d3_date = Date;
++  function d3_date_utc() {
++    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
++  }
++  d3_date_utc.prototype = {
++    getDate: function() {
++      return this._.getUTCDate();
++    },
++    getDay: function() {
++      return this._.getUTCDay();
++    },
++    getFullYear: function() {
++      return this._.getUTCFullYear();
++    },
++    getHours: function() {
++      return this._.getUTCHours();
++    },
++    getMilliseconds: function() {
++      return this._.getUTCMilliseconds();
++    },
++    getMinutes: function() {
++      return this._.getUTCMinutes();
++    },
++    getMonth: function() {
++      return this._.getUTCMonth();
++    },
++    getSeconds: function() {
++      return this._.getUTCSeconds();
++    },
++    getTime: function() {
++      return this._.getTime();
++    },
++    getTimezoneOffset: function() {
++      return 0;
++    },
++    valueOf: function() {
++      return this._.valueOf();
++    },
++    setDate: function() {
++      d3_time_prototype.setUTCDate.apply(this._, arguments);
++    },
++    setDay: function() {
++      d3_time_prototype.setUTCDay.apply(this._, arguments);
++    },
++    setFullYear: function() {
++      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
++    },
++    setHours: function() {
++      d3_time_prototype.setUTCHours.apply(this._, arguments);
++    },
++    setMilliseconds: function() {
++      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
++    },
++    setMinutes: function() {
++      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
++    },
++    setMonth: function() {
++      d3_time_prototype.setUTCMonth.apply(this._, arguments);
++    },
++    setSeconds: function() {
++      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
++    },
++    setTime: function() {
++      d3_time_prototype.setTime.apply(this._, arguments);
+     }
+-    function zoomstarted(dispatch) {
+-      if (!zooming++) dispatch({
+-        type: "zoomstart"
+-      });
++  };
++  var d3_time_prototype = Date.prototype;
++  function d3_time_interval(local, step, number) {
++    function round(date) {
++      var d0 = local(date), d1 = offset(d0, 1);
++      return date - d0 < d1 - date ? d0 : d1;
+     }
+-    function zoomed(dispatch) {
+-      rescale();
+-      dispatch({
+-        type: "zoom",
+-        scale: view.k,
+-        translate: [ view.x, view.y ]
+-      });
++    function ceil(date) {
++      step(date = local(new d3_date(date - 1)), 1);
++      return date;
+     }
+-    function zoomended(dispatch) {
+-      if (!--zooming) dispatch({
+-        type: "zoomend"
+-      }), center0 = null;
++    function offset(date, k) {
++      step(date = new d3_date(+date), k);
++      return date;
+     }
+-    function mousedowned() {
+-      var that = this, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
+-      d3_selection_interrupt.call(that);
+-      zoomstarted(dispatch);
+-      function moved() {
+-        dragged = 1;
+-        translateTo(d3.mouse(that), location0);
+-        zoomed(dispatch);
++    function range(t0, t1, dt) {
++      var time = ceil(t0), times = [];
++      if (dt > 1) {
++        while (time < t1) {
++          if (!(number(time) % dt)) times.push(new Date(+time));
++          step(time, 1);
++        }
++      } else {
++        while (time < t1) times.push(new Date(+time)), step(time, 1);
+       }
+-      function ended() {
+-        subject.on(mousemove, null).on(mouseup, null);
+-        dragRestore(dragged);
+-        zoomended(dispatch);
++      return times;
++    }
++    function range_utc(t0, t1, dt) {
++      try {
++        d3_date = d3_date_utc;
++        var utc = new d3_date_utc();
++        utc._ = t0;
++        return range(utc, t1, dt);
++      } finally {
++        d3_date = Date;
+       }
+     }
+-    function touchstarted() {
+-      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
+-      started();
+-      zoomstarted(dispatch);
+-      subject.on(mousedown, null).on(touchstart, started);
+-      function relocate() {
+-        var touches = d3.touches(that);
+-        scale0 = view.k;
+-        touches.forEach(function(t) {
+-          if (t.identifier in locations0) locations0[t.identifier] = location(t);
+-        });
+-        return touches;
++    local.floor = local;
++    local.round = round;
++    local.ceil = ceil;
++    local.offset = offset;
++    local.range = range;
++    var utc = local.utc = d3_time_interval_utc(local);
++    utc.floor = utc;
++    utc.round = d3_time_interval_utc(round);
++    utc.ceil = d3_time_interval_utc(ceil);
++    utc.offset = d3_time_interval_utc(offset);
++    utc.range = range_utc;
++    return local;
++  }
++  function d3_time_interval_utc(method) {
++    return function(date, k) {
++      try {
++        d3_date = d3_date_utc;
++        var utc = new d3_date_utc();
++        utc._ = date;
++        return method(utc, k)._;
++      } finally {
++        d3_date = Date;
+       }
+-      function started() {
+-        var target = d3.event.target;
+-        d3.select(target).on(touchmove, moved).on(touchend, ended);
+-        targets.push(target);
+-        var changed = d3.event.changedTouches;
+-        for (var i = 0, n = changed.length; i < n; ++i) {
+-          locations0[changed[i].identifier] = null;
+-        }
+-        var touches = relocate(), now = Date.now();
+-        if (touches.length === 1) {
+-          if (now - touchtime < 500) {
+-            var p = touches[0];
+-            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
+-            d3_eventPreventDefault();
++    };
++  }
++  d3_time.year = d3_time_interval(function(date) {
++    date = d3_time.day(date);
++    date.setMonth(0, 1);
++    return date;
++  }, function(date, offset) {
++    date.setFullYear(date.getFullYear() + offset);
++  }, function(date) {
++    return date.getFullYear();
++  });
++  d3_time.years = d3_time.year.range;
++  d3_time.years.utc = d3_time.year.utc.range;
++  d3_time.day = d3_time_interval(function(date) {
++    var day = new d3_date(2e3, 0);
++    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
++    return day;
++  }, function(date, offset) {
++    date.setDate(date.getDate() + offset);
++  }, function(date) {
++    return date.getDate() - 1;
++  });
++  d3_time.days = d3_time.day.range;
++  d3_time.days.utc = d3_time.day.utc.range;
++  d3_time.dayOfYear = function(date) {
++    var year = d3_time.year(date);
++    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
++  };
++  [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
++    i = 7 - i;
++    var interval = d3_time[day] = d3_time_interval(function(date) {
++      (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
++      return date;
++    }, function(date, offset) {
++      date.setDate(date.getDate() + Math.floor(offset) * 7);
++    }, function(date) {
++      var day = d3_time.year(date).getDay();
++      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
++    });
++    d3_time[day + "s"] = interval.range;
++    d3_time[day + "s"].utc = interval.utc.range;
++    d3_time[day + "OfYear"] = function(date) {
++      var day = d3_time.year(date).getDay();
++      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
++    };
++  });
++  d3_time.week = d3_time.sunday;
++  d3_time.weeks = d3_time.sunday.range;
++  d3_time.weeks.utc = d3_time.sunday.utc.range;
++  d3_time.weekOfYear = d3_time.sundayOfYear;
++  function d3_locale_timeFormat(locale) {
++    var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
++    function d3_time_format(template) {
++      var n = template.length;
++      function format(date) {
++        var string = [], i = -1, j = 0, c, p, f;
++        while (++i < n) {
++          if (template.charCodeAt(i) === 37) {
++            string.push(template.slice(j, i));
++            if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
++            if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
++            string.push(c);
++            j = i + 1;
+           }
+-          touchtime = now;
+-        } else if (touches.length > 1) {
+-          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
+-          distance0 = dx * dx + dy * dy;
+         }
++        string.push(template.slice(j, i));
++        return string.join("");
+       }
+-      function moved() {
+-        var touches = d3.touches(that), p0, l0, p1, l1;
+-        d3_selection_interrupt.call(that);
+-        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
+-          p1 = touches[i];
+-          if (l1 = locations0[p1.identifier]) {
+-            if (l0) break;
+-            p0 = p1, l0 = l1;
+-          }
++      format.parse = function(string) {
++        var d = {
++          y: 1900,
++          m: 0,
++          d: 1,
++          H: 0,
++          M: 0,
++          S: 0,
++          L: 0,
++          Z: null
++        }, i = d3_time_parse(d, template, string, 0);
++        if (i != string.length) return null;
++        if ("p" in d) d.H = d.H % 12 + d.p * 12;
++        var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
++        if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("W" in d || "U" in d) {
++          if (!("w" in d)) d.w = "W" in d ? 1 : 0;
++          date.setFullYear(d.y, 0, 1);
++          date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
++        } else date.setFullYear(d.y, d.m, d.d);
++        date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
++        return localZ ? date._ : date;
++      };
++      format.toString = function() {
++        return template;
++      };
++      return format;
++    }
++    function d3_time_parse(date, template, string, j) {
++      var c, p, t, i = 0, n = template.length, m = string.length;
++      while (i < n) {
++        if (j >= m) return -1;
++        c = template.charCodeAt(i++);
++        if (c === 37) {
++          t = template.charAt(i++);
++          p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
++          if (!p || (j = p(date, string, j)) < 0) return -1;
++        } else if (c != string.charCodeAt(j++)) {
++          return -1;
+         }
+-        if (l1) {
+-          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
+-          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
+-          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
+-          scaleTo(scale1 * scale0);
++      }
++      return j;
++    }
++    d3_time_format.utc = function(template) {
++      var local = d3_time_format(template);
++      function format(date) {
++        try {
++          d3_date = d3_date_utc;
++          var utc = new d3_date();
++          utc._ = date;
++          return local(utc);
++        } finally {
++          d3_date = Date;
+         }
+-        touchtime = null;
+-        translateTo(p0, l0);
+-        zoomed(dispatch);
+       }
+-      function ended() {
+-        if (d3.event.touches.length) {
+-          var changed = d3.event.changedTouches;
+-          for (var i = 0, n = changed.length; i < n; ++i) {
+-            delete locations0[changed[i].identifier];
+-          }
+-          for (var identifier in locations0) {
+-            return void relocate();
+-          }
++      format.parse = function(string) {
++        try {
++          d3_date = d3_date_utc;
++          var date = local.parse(string);
++          return date && date._;
++        } finally {
++          d3_date = Date;
+         }
+-        d3.selectAll(targets).on(zoomName, null);
+-        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
+-        dragRestore();
+-        zoomended(dispatch);
++      };
++      format.toString = local.toString;
++      return format;
++    };
++    d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
++    var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
++    locale_periods.forEach(function(p, i) {
++      d3_time_periodLookup.set(p.toLowerCase(), i);
++    });
++    var d3_time_formats = {
++      a: function(d) {
++        return locale_shortDays[d.getDay()];
++      },
++      A: function(d) {
++        return locale_days[d.getDay()];
++      },
++      b: function(d) {
++        return locale_shortMonths[d.getMonth()];
++      },
++      B: function(d) {
++        return locale_months[d.getMonth()];
++      },
++      c: d3_time_format(locale_dateTime),
++      d: function(d, p) {
++        return d3_time_formatPad(d.getDate(), p, 2);
++      },
++      e: function(d, p) {
++        return d3_time_formatPad(d.getDate(), p, 2);
++      },
++      H: function(d, p) {
++        return d3_time_formatPad(d.getHours(), p, 2);
++      },
++      I: function(d, p) {
++        return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
++      },
++      j: function(d, p) {
++        return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
++      },
++      L: function(d, p) {
++        return d3_time_formatPad(d.getMilliseconds(), p, 3);
++      },
++      m: function(d, p) {
++        return d3_time_formatPad(d.getMonth() + 1, p, 2);
++      },
++      M: function(d, p) {
++        return d3_time_formatPad(d.getMinutes(), p, 2);
++      },
++      p: function(d) {
++        return locale_periods[+(d.getHours() >= 12)];
++      },
++      S: function(d, p) {
++        return d3_time_formatPad(d.getSeconds(), p, 2);
++      },
++      U: function(d, p) {
++        return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
++      },
++      w: function(d) {
++        return d.getDay();
++      },
++      W: function(d, p) {
++        return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
++      },
++      x: d3_time_format(locale_date),
++      X: d3_time_format(locale_time),
++      y: function(d, p) {
++        return d3_time_formatPad(d.getFullYear() % 100, p, 2);
++      },
++      Y: function(d, p) {
++        return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
++      },
++      Z: d3_time_zone,
++      "%": function() {
++        return "%";
+       }
++    };
++    var d3_time_parsers = {
++      a: d3_time_parseWeekdayAbbrev,
++      A: d3_time_parseWeekday,
++      b: d3_time_parseMonthAbbrev,
++      B: d3_time_parseMonth,
++      c: d3_time_parseLocaleFull,
++      d: d3_time_parseDay,
++      e: d3_time_parseDay,
++      H: d3_time_parseHour24,
++      I: d3_time_parseHour24,
++      j: d3_time_parseDayOfYear,
++      L: d3_time_parseMilliseconds,
++      m: d3_time_parseMonthNumber,
++      M: d3_time_parseMinutes,
++      p: d3_time_parseAmPm,
++      S: d3_time_parseSeconds,
++      U: d3_time_parseWeekNumberSunday,
++      w: d3_time_parseWeekdayNumber,
++      W: d3_time_parseWeekNumberMonday,
++      x: d3_time_parseLocaleDate,
++      X: d3_time_parseLocaleTime,
++      y: d3_time_parseYear,
++      Y: d3_time_parseFullYear,
++      Z: d3_time_parseZone,
++      "%": d3_time_parseLiteralPercent
++    };
++    function d3_time_parseWeekdayAbbrev(date, string, i) {
++      d3_time_dayAbbrevRe.lastIndex = 0;
++      var n = d3_time_dayAbbrevRe.exec(string.slice(i));
++      return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+     }
+-    function mousewheeled() {
+-      var dispatch = event.of(this, arguments);
+-      if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this), 
+-      translate0 = location(center0 = center || d3.mouse(this)), zoomstarted(dispatch);
+-      mousewheelTimer = setTimeout(function() {
+-        mousewheelTimer = null;
+-        zoomended(dispatch);
+-      }, 50);
+-      d3_eventPreventDefault();
+-      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
+-      translateTo(center0, translate0);
+-      zoomed(dispatch);
++    function d3_time_parseWeekday(date, string, i) {
++      d3_time_dayRe.lastIndex = 0;
++      var n = d3_time_dayRe.exec(string.slice(i));
++      return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+     }
+-    function dblclicked() {
+-      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
+-      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
++    function d3_time_parseMonthAbbrev(date, string, i) {
++      d3_time_monthAbbrevRe.lastIndex = 0;
++      var n = d3_time_monthAbbrevRe.exec(string.slice(i));
++      return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+     }
+-    return d3.rebind(zoom, event, "on");
+-  };
+-  var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
+-  d3.color = d3_color;
+-  function d3_color() {}
+-  d3_color.prototype.toString = function() {
+-    return this.rgb() + "";
+-  };
+-  d3.hsl = d3_hsl;
+-  function d3_hsl(h, s, l) {
+-    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
+-  }
+-  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
+-  d3_hslPrototype.brighter = function(k) {
+-    k = Math.pow(.7, arguments.length ? k : 1);
+-    return new d3_hsl(this.h, this.s, this.l / k);
+-  };
+-  d3_hslPrototype.darker = function(k) {
+-    k = Math.pow(.7, arguments.length ? k : 1);
+-    return new d3_hsl(this.h, this.s, k * this.l);
+-  };
+-  d3_hslPrototype.rgb = function() {
+-    return d3_hsl_rgb(this.h, this.s, this.l);
+-  };
+-  function d3_hsl_rgb(h, s, l) {
+-    var m1, m2;
+-    h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
+-    s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
+-    l = l < 0 ? 0 : l > 1 ? 1 : l;
+-    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
+-    m1 = 2 * l - m2;
+-    function v(h) {
+-      if (h > 360) h -= 360; else if (h < 0) h += 360;
+-      if (h < 60) return m1 + (m2 - m1) * h / 60;
+-      if (h < 180) return m2;
+-      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
+-      return m1;
++    function d3_time_parseMonth(date, string, i) {
++      d3_time_monthRe.lastIndex = 0;
++      var n = d3_time_monthRe.exec(string.slice(i));
++      return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+     }
+-    function vv(h) {
+-      return Math.round(v(h) * 255);
++    function d3_time_parseLocaleFull(date, string, i) {
++      return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
+     }
+-    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
++    function d3_time_parseLocaleDate(date, string, i) {
++      return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
++    }
++    function d3_time_parseLocaleTime(date, string, i) {
++      return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
++    }
++    function d3_time_parseAmPm(date, string, i) {
++      var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
++      return n == null ? -1 : (date.p = n, i);
++    }
++    return d3_time_format;
+   }
+-  d3.hcl = d3_hcl;
+-  function d3_hcl(h, c, l) {
+-    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
++  var d3_time_formatPads = {
++    "-": "",
++    _: " ",
++    "0": "0"
++  }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
++  function d3_time_formatPad(value, fill, width) {
++    var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
++    return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
+   }
+-  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
+-  d3_hclPrototype.brighter = function(k) {
+-    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
+-  };
+-  d3_hclPrototype.darker = function(k) {
+-    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
++  function d3_time_formatRe(names) {
++    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
++  }
++  function d3_time_formatLookup(names) {
++    var map = new d3_Map(), i = -1, n = names.length;
++    while (++i < n) map.set(names[i].toLowerCase(), i);
++    return map;
++  }
++  function d3_time_parseWeekdayNumber(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i, i + 1));
++    return n ? (date.w = +n[0], i + n[0].length) : -1;
++  }
++  function d3_time_parseWeekNumberSunday(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i));
++    return n ? (date.U = +n[0], i + n[0].length) : -1;
++  }
++  function d3_time_parseWeekNumberMonday(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i));
++    return n ? (date.W = +n[0], i + n[0].length) : -1;
++  }
++  function d3_time_parseFullYear(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i, i + 4));
++    return n ? (date.y = +n[0], i + n[0].length) : -1;
++  }
++  function d3_time_parseYear(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
++    return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
++  }
++  function d3_time_parseZone(date, string, i) {
++    return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string, 
++    i + 5) : -1;
++  }
++  function d3_time_expandYear(d) {
++    return d + (d > 68 ? 1900 : 2e3);
++  }
++  function d3_time_parseMonthNumber(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
++    return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
++  }
++  function d3_time_parseDay(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
++    return n ? (date.d = +n[0], i + n[0].length) : -1;
++  }
++  function d3_time_parseDayOfYear(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
++    return n ? (date.j = +n[0], i + n[0].length) : -1;
++  }
++  function d3_time_parseHour24(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
++    return n ? (date.H = +n[0], i + n[0].length) : -1;
++  }
++  function d3_time_parseMinutes(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
++    return n ? (date.M = +n[0], i + n[0].length) : -1;
++  }
++  function d3_time_parseSeconds(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
++    return n ? (date.S = +n[0], i + n[0].length) : -1;
++  }
++  function d3_time_parseMilliseconds(date, string, i) {
++    d3_time_numberRe.lastIndex = 0;
++    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
++    return n ? (date.L = +n[0], i + n[0].length) : -1;
++  }
++  function d3_time_zone(d) {
++    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
++    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
++  }
++  function d3_time_parseLiteralPercent(date, string, i) {
++    d3_time_percentRe.lastIndex = 0;
++    var n = d3_time_percentRe.exec(string.slice(i, i + 1));
++    return n ? i + n[0].length : -1;
++  }
++  function d3_time_formatMulti(formats) {
++    var n = formats.length, i = -1;
++    while (++i < n) formats[i][0] = this(formats[i][0]);
++    return function(date) {
++      var i = 0, f = formats[i];
++      while (!f[1](date)) f = formats[++i];
++      return f[0](date);
++    };
++  }
++  d3.locale = function(locale) {
++    return {
++      numberFormat: d3_locale_numberFormat(locale),
++      timeFormat: d3_locale_timeFormat(locale)
++    };
+   };
+-  d3_hclPrototype.rgb = function() {
+-    return d3_hcl_lab(this.h, this.c, this.l).rgb();
++  var d3_locale_enUS = d3.locale({
++    decimal: ".",
++    thousands: ",",
++    grouping: [ 3 ],
++    currency: [ "$", "" ],
++    dateTime: "%a %b %e %X %Y",
++    date: "%m/%d/%Y",
++    time: "%H:%M:%S",
++    periods: [ "AM", "PM" ],
++    days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
++    shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
++    months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
++    shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
++  });
++  d3.format = d3_locale_enUS.numberFormat;
++  d3.geo = {};
++  function d3_adder() {}
++  d3_adder.prototype = {
++    s: 0,
++    t: 0,
++    add: function(y) {
++      d3_adderSum(y, this.t, d3_adderTemp);
++      d3_adderSum(d3_adderTemp.s, this.s, this);
++      if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
++    },
++    reset: function() {
++      this.s = this.t = 0;
++    },
++    valueOf: function() {
++      return this.s;
++    }
+   };
+-  function d3_hcl_lab(h, c, l) {
+-    if (isNaN(h)) h = 0;
+-    if (isNaN(c)) c = 0;
+-    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
++  var d3_adderTemp = new d3_adder();
++  function d3_adderSum(a, b, o) {
++    var x = o.s = a + b, bv = x - a, av = x - bv;
++    o.t = a - av + (b - bv);
+   }
+-  d3.lab = d3_lab;
+-  function d3_lab(l, a, b) {
+-    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
++  d3.geo.stream = function(object, listener) {
++    if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
++      d3_geo_streamObjectType[object.type](object, listener);
++    } else {
++      d3_geo_streamGeometry(object, listener);
++    }
++  };
++  function d3_geo_streamGeometry(geometry, listener) {
++    if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
++      d3_geo_streamGeometryType[geometry.type](geometry, listener);
++    }
+   }
+-  var d3_lab_K = 18;
+-  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
+-  var d3_labPrototype = d3_lab.prototype = new d3_color();
+-  d3_labPrototype.brighter = function(k) {
+-    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
++  var d3_geo_streamObjectType = {
++    Feature: function(feature, listener) {
++      d3_geo_streamGeometry(feature.geometry, listener);
++    },
++    FeatureCollection: function(object, listener) {
++      var features = object.features, i = -1, n = features.length;
++      while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
++    }
++  };
++  var d3_geo_streamGeometryType = {
++    Sphere: function(object, listener) {
++      listener.sphere();
++    },
++    Point: function(object, listener) {
++      object = object.coordinates;
++      listener.point(object[0], object[1], object[2]);
++    },
++    MultiPoint: function(object, listener) {
++      var coordinates = object.coordinates, i = -1, n = coordinates.length;
++      while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
++    },
++    LineString: function(object, listener) {
++      d3_geo_streamLine(object.coordinates, listener, 0);
++    },
++    MultiLineString: function(object, listener) {
++      var coordinates = object.coordinates, i = -1, n = coordinates.length;
++      while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
++    },
++    Polygon: function(object, listener) {
++      d3_geo_streamPolygon(object.coordinates, listener);
++    },
++    MultiPolygon: function(object, listener) {
++      var coordinates = object.coordinates, i = -1, n = coordinates.length;
++      while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
++    },
++    GeometryCollection: function(object, listener) {
++      var geometries = object.geometries, i = -1, n = geometries.length;
++      while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
++    }
+   };
+-  d3_labPrototype.darker = function(k) {
+-    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
++  function d3_geo_streamLine(coordinates, listener, closed) {
++    var i = -1, n = coordinates.length - closed, coordinate;
++    listener.lineStart();
++    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
++    listener.lineEnd();
++  }
++  function d3_geo_streamPolygon(coordinates, listener) {
++    var i = -1, n = coordinates.length;
++    listener.polygonStart();
++    while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
++    listener.polygonEnd();
++  }
++  d3.geo.area = function(object) {
++    d3_geo_areaSum = 0;
++    d3.geo.stream(object, d3_geo_area);
++    return d3_geo_areaSum;
+   };
+-  d3_labPrototype.rgb = function() {
+-    return d3_lab_rgb(this.l, this.a, this.b);
++  var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
++  var d3_geo_area = {
++    sphere: function() {
++      d3_geo_areaSum += 4 * π;
++    },
++    point: d3_noop,
++    lineStart: d3_noop,
++    lineEnd: d3_noop,
++    polygonStart: function() {
++      d3_geo_areaRingSum.reset();
++      d3_geo_area.lineStart = d3_geo_areaRingStart;
++    },
++    polygonEnd: function() {
++      var area = 2 * d3_geo_areaRingSum;
++      d3_geo_areaSum += area < 0 ? 4 * π + area : area;
++      d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
++    }
+   };
+-  function d3_lab_rgb(l, a, b) {
+-    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
+-    x = d3_lab_xyz(x) * d3_lab_X;
+-    y = d3_lab_xyz(y) * d3_lab_Y;
+-    z = d3_lab_xyz(z) * d3_lab_Z;
+-    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
++  function d3_geo_areaRingStart() {
++    var λ00, φ00, λ0, cosφ0, sinφ0;
++    d3_geo_area.point = function(λ, φ) {
++      d3_geo_area.point = nextPoint;
++      λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4), 
++      sinφ0 = Math.sin(φ);
++    };
++    function nextPoint(λ, φ) {
++      λ *= d3_radians;
++      φ = φ * d3_radians / 2 + π / 4;
++      var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
++      d3_geo_areaRingSum.add(Math.atan2(v, u));
++      λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
++    }
++    d3_geo_area.lineEnd = function() {
++      nextPoint(λ00, φ00);
++    };
+   }
+-  function d3_lab_hcl(l, a, b) {
+-    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
++  function d3_geo_cartesian(spherical) {
++    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
++    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
+   }
+-  function d3_lab_xyz(x) {
+-    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
++  function d3_geo_cartesianDot(a, b) {
++    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+   }
+-  function d3_xyz_lab(x) {
+-    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
++  function d3_geo_cartesianCross(a, b) {
++    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
+   }
+-  function d3_xyz_rgb(r) {
+-    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
++  function d3_geo_cartesianAdd(a, b) {
++    a[0] += b[0];
++    a[1] += b[1];
++    a[2] += b[2];
+   }
+-  d3.rgb = d3_rgb;
+-  function d3_rgb(r, g, b) {
+-    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
++  function d3_geo_cartesianScale(vector, k) {
++    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
+   }
+-  function d3_rgbNumber(value) {
+-    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
++  function d3_geo_cartesianNormalize(d) {
++    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
++    d[0] /= l;
++    d[1] /= l;
++    d[2] /= l;
+   }
+-  function d3_rgbString(value) {
+-    return d3_rgbNumber(value) + "";
++  function d3_geo_spherical(cartesian) {
++    return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
+   }
+-  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
+-  d3_rgbPrototype.brighter = function(k) {
+-    k = Math.pow(.7, arguments.length ? k : 1);
+-    var r = this.r, g = this.g, b = this.b, i = 30;
+-    if (!r && !g && !b) return new d3_rgb(i, i, i);
+-    if (r && r < i) r = i;
+-    if (g && g < i) g = i;
+-    if (b && b < i) b = i;
+-    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
+-  };
+-  d3_rgbPrototype.darker = function(k) {
+-    k = Math.pow(.7, arguments.length ? k : 1);
+-    return new d3_rgb(k * this.r, k * this.g, k * this.b);
+-  };
+-  d3_rgbPrototype.hsl = function() {
+-    return d3_rgb_hsl(this.r, this.g, this.b);
+-  };
+-  d3_rgbPrototype.toString = function() {
+-    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
+-  };
+-  function d3_rgb_hex(v) {
+-    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
++  function d3_geo_sphericalEqual(a, b) {
++    return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
+   }
+-  function d3_rgb_parse(format, rgb, hsl) {
+-    var r = 0, g = 0, b = 0, m1, m2, color;
+-    m1 = /([a-z]+)\((.*)\)/.exec(format = format.toLowerCase());
+-    if (m1) {
+-      m2 = m1[2].split(",");
+-      switch (m1[1]) {
+-       case "hsl":
+-        {
+-          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
++  d3.geo.bounds = function() {
++    var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
++    var bound = {
++      point: point,
++      lineStart: lineStart,
++      lineEnd: lineEnd,
++      polygonStart: function() {
++        bound.point = ringPoint;
++        bound.lineStart = ringStart;
++        bound.lineEnd = ringEnd;
++        dλSum = 0;
++        d3_geo_area.polygonStart();
++      },
++      polygonEnd: function() {
++        d3_geo_area.polygonEnd();
++        bound.point = point;
++        bound.lineStart = lineStart;
++        bound.lineEnd = lineEnd;
++        if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
++        range[0] = λ0, range[1] = λ1;
++      }
++    };
++    function point(λ, φ) {
++      ranges.push(range = [ λ0 = λ, λ1 = λ ]);
++      if (φ < φ0) φ0 = φ;
++      if (φ > φ1) φ1 = φ;
++    }
++    function linePoint(λ, φ) {
++      var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
++      if (p0) {
++        var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
++        d3_geo_cartesianNormalize(inflection);
++        inflection = d3_geo_spherical(inflection);
++        var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
++        if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
++          var φi = inflection[1] * d3_degrees;
++          if (φi > φ1) φ1 = φi;
++        } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
++          var φi = -inflection[1] * d3_degrees;
++          if (φi < φ0) φ0 = φi;
++        } else {
++          if (φ < φ0) φ0 = φ;
++          if (φ > φ1) φ1 = φ;
+         }
+-
+-       case "rgb":
+-        {
+-          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
++        if (antimeridian) {
++          if (λ < λ_) {
++            if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
++          } else {
++            if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
++          }
++        } else {
++          if (λ1 >= λ0) {
++            if (λ < λ0) λ0 = λ;
++            if (λ > λ1) λ1 = λ;
++          } else {
++            if (λ > λ_) {
++              if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
++            } else {
++              if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
++            }
++          }
+         }
++      } else {
++        point(λ, φ);
+       }
++      p0 = p, λ_ = λ;
+     }
+-    if (color = d3_rgb_names.get(format)) {
+-      return rgb(color.r, color.g, color.b);
++    function lineStart() {
++      bound.point = linePoint;
+     }
+-    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
+-      if (format.length === 4) {
+-        r = (color & 3840) >> 4;
+-        r = r >> 4 | r;
+-        g = color & 240;
+-        g = g >> 4 | g;
+-        b = color & 15;
+-        b = b << 4 | b;
+-      } else if (format.length === 7) {
+-        r = (color & 16711680) >> 16;
+-        g = (color & 65280) >> 8;
+-        b = color & 255;
++    function lineEnd() {
++      range[0] = λ0, range[1] = λ1;
++      bound.point = point;
++      p0 = null;
++    }
++    function ringPoint(λ, φ) {
++      if (p0) {
++        var dλ = λ - λ_;
++        dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
++      } else λ__ = λ, φ__ = φ;
++      d3_geo_area.point(λ, φ);
++      linePoint(λ, φ);
++    }
++    function ringStart() {
++      d3_geo_area.lineStart();
++    }
++    function ringEnd() {
++      ringPoint(λ__, φ__);
++      d3_geo_area.lineEnd();
++      if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
++      range[0] = λ0, range[1] = λ1;
++      p0 = null;
++    }
++    function angle(λ0, λ1) {
++      return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
++    }
++    function compareRanges(a, b) {
++      return a[0] - b[0];
++    }
++    function withinRange(x, range) {
++      return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
++    }
++    return function(feature) {
++      φ1 = λ1 = -(λ0 = φ0 = Infinity);
++      ranges = [];
++      d3.geo.stream(feature, bound);
++      var n = ranges.length;
++      if (n) {
++        ranges.sort(compareRanges);
++        for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
++          b = ranges[i];
++          if (withinRange(b[0], a) || withinRange(b[1], a)) {
++            if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
++            if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
++          } else {
++            merged.push(a = b);
++          }
++        }
++        var best = -Infinity, dλ;
++        for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
++          b = merged[i];
++          if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
++        }
+       }
++      ranges = range = null;
++      return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
++    };
++  }();
++  d3.geo.centroid = function(object) {
++    d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
++    d3.geo.stream(object, d3_geo_centroid);
++    var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
++    if (m < ε2) {
++      x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
++      if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
++      m = x * x + y * y + z * z;
++      if (m < ε2) return [ NaN, NaN ];
+     }
+-    return rgb(r, g, b);
+-  }
+-  function d3_rgb_hsl(r, g, b) {
+-    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
+-    if (d) {
+-      s = l < .5 ? d / (max + min) : d / (2 - max - min);
+-      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
+-      h *= 60;
+-    } else {
+-      h = NaN;
+-      s = l > 0 && l < 1 ? 0 : h;
++    return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
++  };
++  var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
++  var d3_geo_centroid = {
++    sphere: d3_noop,
++    point: d3_geo_centroidPoint,
++    lineStart: d3_geo_centroidLineStart,
++    lineEnd: d3_geo_centroidLineEnd,
++    polygonStart: function() {
++      d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
++    },
++    polygonEnd: function() {
++      d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
+     }
+-    return new d3_hsl(h, s, l);
++  };
++  function d3_geo_centroidPoint(λ, φ) {
++    λ *= d3_radians;
++    var cosφ = Math.cos(φ *= d3_radians);
++    d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
+   }
+-  function d3_rgb_lab(r, g, b) {
+-    r = d3_rgb_xyz(r);
+-    g = d3_rgb_xyz(g);
+-    b = d3_rgb_xyz(b);
+-    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
+-    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
++  function d3_geo_centroidPointXYZ(x, y, z) {
++    ++d3_geo_centroidW0;
++    d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
++    d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
++    d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
+   }
+-  function d3_rgb_xyz(r) {
+-    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
++  function d3_geo_centroidLineStart() {
++    var x0, y0, z0;
++    d3_geo_centroid.point = function(λ, φ) {
++      λ *= d3_radians;
++      var cosφ = Math.cos(φ *= d3_radians);
++      x0 = cosφ * Math.cos(λ);
++      y0 = cosφ * Math.sin(λ);
++      z0 = Math.sin(φ);
++      d3_geo_centroid.point = nextPoint;
++      d3_geo_centroidPointXYZ(x0, y0, z0);
++    };
++    function nextPoint(λ, φ) {
++      λ *= d3_radians;
++      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
++      d3_geo_centroidW1 += w;
++      d3_geo_centroidX1 += w * (x0 + (x0 = x));
++      d3_geo_centroidY1 += w * (y0 + (y0 = y));
++      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
++      d3_geo_centroidPointXYZ(x0, y0, z0);
++    }
+   }
+-  function d3_rgb_parseNumber(c) {
+-    var f = parseFloat(c);
+-    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
++  function d3_geo_centroidLineEnd() {
++    d3_geo_centroid.point = d3_geo_centroidPoint;
+   }
+-  var d3_rgb_names = d3.map({
+-    aliceblue: 15792383,
+-    antiquewhite: 16444375,
+-    aqua: 65535,
+-    aquamarine: 8388564,
+-    azure: 15794175,
+-    beige: 16119260,
+-    bisque: 16770244,
+-    black: 0,
+-    blanchedalmond: 16772045,
+-    blue: 255,
+-    blueviolet: 9055202,
+-    brown: 10824234,
+-    burlywood: 14596231,
+-    cadetblue: 6266528,
+-    chartreuse: 8388352,
+-    chocolate: 13789470,
+-    coral: 16744272,
+-    cornflowerblue: 6591981,
+-    cornsilk: 16775388,
+-    crimson: 14423100,
+-    cyan: 65535,
+-    darkblue: 139,
+-    darkcyan: 35723,
+-    darkgoldenrod: 12092939,
+-    darkgray: 11119017,
+-    darkgreen: 25600,
+-    darkgrey: 11119017,
+-    darkkhaki: 12433259,
+-    darkmagenta: 9109643,
+-    darkolivegreen: 5597999,
+-    darkorange: 16747520,
+-    darkorchid: 10040012,
+-    darkred: 9109504,
+-    darksalmon: 15308410,
+-    darkseagreen: 9419919,
+-    darkslateblue: 4734347,
+-    darkslategray: 3100495,
+-    darkslategrey: 3100495,
+-    darkturquoise: 52945,
+-    darkviolet: 9699539,
+-    deeppink: 16716947,
+-    deepskyblue: 49151,
+-    dimgray: 6908265,
+-    dimgrey: 6908265,
+-    dodgerblue: 2003199,
+-    firebrick: 11674146,
+-    floralwhite: 16775920,
+-    forestgreen: 2263842,
+-    fuchsia: 16711935,
+-    gainsboro: 14474460,
+-    ghostwhite: 16316671,
+-    gold: 16766720,
+-    goldenrod: 14329120,
+-    gray: 8421504,
+-    green: 32768,
+-    greenyellow: 11403055,
+-    grey: 8421504,
+-    honeydew: 15794160,
+-    hotpink: 16738740,
+-    indianred: 13458524,
+-    indigo: 4915330,
+-    ivory: 16777200,
+-    khaki: 15787660,
+-    lavender: 15132410,
+-    lavenderblush: 16773365,
+-    lawngreen: 8190976,
+-    lemonchiffon: 16775885,
+-    lightblue: 11393254,
+-    lightcoral: 15761536,
+-    lightcyan: 14745599,
+-    lightgoldenrodyellow: 16448210,
+-    lightgray: 13882323,
+-    lightgreen: 9498256,
+-    lightgrey: 13882323,
+-    lightpink: 16758465,
+-    lightsalmon: 16752762,
+-    lightseagreen: 2142890,
+-    lightskyblue: 8900346,
+-    lightslategray: 7833753,
+-    lightslategrey: 7833753,
+-    lightsteelblue: 11584734,
+-    lightyellow: 16777184,
+-    lime: 65280,
+-    limegreen: 3329330,
+-    linen: 16445670,
+-    magenta: 16711935,
+-    maroon: 8388608,
+-    mediumaquamarine: 6737322,
+-    mediumblue: 205,
+-    mediumorchid: 12211667,
+-    mediumpurple: 9662683,
+-    mediumseagreen: 3978097,
+-    mediumslateblue: 8087790,
+-    mediumspringgreen: 64154,
+-    mediumturquoise: 4772300,
+-    mediumvioletred: 13047173,
+-    midnightblue: 1644912,
+-    mintcream: 16121850,
+-    mistyrose: 16770273,
+-    moccasin: 16770229,
+-    navajowhite: 16768685,
+-    navy: 128,
+-    oldlace: 16643558,
+-    olive: 8421376,
+-    olivedrab: 7048739,
+-    orange: 16753920,
+-    orangered: 16729344,
+-    orchid: 14315734,
+-    palegoldenrod: 15657130,
+-    palegreen: 10025880,
+-    paleturquoise: 11529966,
+-    palevioletred: 14381203,
+-    papayawhip: 16773077,
+-    peachpuff: 16767673,
+-    peru: 13468991,
+-    pink: 16761035,
+-    plum: 14524637,
+-    powderblue: 11591910,
+-    purple: 8388736,
+-    rebeccapurple: 6697881,
+-    red: 16711680,
+-    rosybrown: 12357519,
+-    royalblue: 4286945,
+-    saddlebrown: 9127187,
+-    salmon: 16416882,
+-    sandybrown: 16032864,
+-    seagreen: 3050327,
+-    seashell: 16774638,
+-    sienna: 10506797,
+-    silver: 12632256,
+-    skyblue: 8900331,
+-    slateblue: 6970061,
+-    slategray: 7372944,
+-    slategrey: 7372944,
+-    snow: 16775930,
+-    springgreen: 65407,
+-    steelblue: 4620980,
+-    tan: 13808780,
+-    teal: 32896,
+-    thistle: 14204888,
+-    tomato: 16737095,
+-    turquoise: 4251856,
+-    violet: 15631086,
+-    wheat: 16113331,
+-    white: 16777215,
+-    whitesmoke: 16119285,
+-    yellow: 16776960,
+-    yellowgreen: 10145074
+-  });
+-  d3_rgb_names.forEach(function(key, value) {
+-    d3_rgb_names.set(key, d3_rgbNumber(value));
+-  });
+-  function d3_functor(v) {
+-    return typeof v === "function" ? v : function() {
+-      return v;
++  function d3_geo_centroidRingStart() {
++    var λ00, φ00, x0, y0, z0;
++    d3_geo_centroid.point = function(λ, φ) {
++      λ00 = λ, φ00 = φ;
++      d3_geo_centroid.point = nextPoint;
++      λ *= d3_radians;
++      var cosφ = Math.cos(φ *= d3_radians);
++      x0 = cosφ * Math.cos(λ);
++      y0 = cosφ * Math.sin(λ);
++      z0 = Math.sin(φ);
++      d3_geo_centroidPointXYZ(x0, y0, z0);
+     };
+-  }
+-  d3.functor = d3_functor;
+-  d3.xhr = d3_xhrType(d3_identity);
+-  function d3_xhrType(response) {
+-    return function(url, mimeType, callback) {
+-      if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, 
+-      mimeType = null;
+-      return d3_xhr(url, mimeType, response, callback);
++    d3_geo_centroid.lineEnd = function() {
++      nextPoint(λ00, φ00);
++      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
++      d3_geo_centroid.point = d3_geo_centroidPoint;
+     };
++    function nextPoint(λ, φ) {
++      λ *= d3_radians;
++      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
++      d3_geo_centroidX2 += v * cx;
++      d3_geo_centroidY2 += v * cy;
++      d3_geo_centroidZ2 += v * cz;
++      d3_geo_centroidW1 += w;
++      d3_geo_centroidX1 += w * (x0 + (x0 = x));
++      d3_geo_centroidY1 += w * (y0 + (y0 = y));
++      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
++      d3_geo_centroidPointXYZ(x0, y0, z0);
++    }
+   }
+-  function d3_xhr(url, mimeType, response, callback) {
+-    var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
+-    if (this.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
+-    "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
+-      request.readyState > 3 && respond();
+-    };
+-    function respond() {
+-      var status = request.status, result;
+-      if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
+-        try {
+-          result = response.call(xhr, request);
+-        } catch (e) {
+-          dispatch.error.call(xhr, e);
+-          return;
+-        }
+-        dispatch.load.call(xhr, result);
+-      } else {
+-        dispatch.error.call(xhr, request);
+-      }
++  function d3_geo_compose(a, b) {
++    function compose(x, y) {
++      return x = a(x, y), b(x[0], x[1]);
+     }
+-    request.onprogress = function(event) {
+-      var o = d3.event;
+-      d3.event = event;
+-      try {
+-        dispatch.progress.call(xhr, request);
+-      } finally {
+-        d3.event = o;
+-      }
+-    };
+-    xhr.header = function(name, value) {
+-      name = (name + "").toLowerCase();
+-      if (arguments.length < 2) return headers[name];
+-      if (value == null) delete headers[name]; else headers[name] = value + "";
+-      return xhr;
+-    };
+-    xhr.mimeType = function(value) {
+-      if (!arguments.length) return mimeType;
+-      mimeType = value == null ? null : value + "";
+-      return xhr;
+-    };
+-    xhr.responseType = function(value) {
+-      if (!arguments.length) return responseType;
+-      responseType = value;
+-      return xhr;
+-    };
+-    xhr.response = function(value) {
+-      response = value;
+-      return xhr;
+-    };
+-    [ "get", "post" ].forEach(function(method) {
+-      xhr[method] = function() {
+-        return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
+-      };
+-    });
+-    xhr.send = function(method, data, callback) {
+-      if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
+-      request.open(method, url, true);
+-      if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
+-      if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
+-      if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
+-      if (responseType != null) request.responseType = responseType;
+-      if (callback != null) xhr.on("error", callback).on("load", function(request) {
+-        callback(null, request);
+-      });
+-      dispatch.beforesend.call(xhr, request);
+-      request.send(data == null ? null : data);
+-      return xhr;
+-    };
+-    xhr.abort = function() {
+-      request.abort();
+-      return xhr;
++    if (a.invert && b.invert) compose.invert = function(x, y) {
++      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
+     };
+-    d3.rebind(xhr, dispatch, "on");
+-    return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
+-  }
+-  function d3_xhr_fixCallback(callback) {
+-    return callback.length === 1 ? function(error, request) {
+-      callback(error == null ? request : null);
+-    } : callback;
++    return compose;
+   }
+-  function d3_xhrHasResponse(request) {
+-    var type = request.responseType;
+-    return type && type !== "text" ? request.response : request.responseText;
++  function d3_true() {
++    return true;
+   }
+-  d3.dsv = function(delimiter, mimeType) {
+-    var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
+-    function dsv(url, row, callback) {
+-      if (arguments.length < 3) callback = row, row = null;
+-      var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
+-      xhr.row = function(_) {
+-        return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
+-      };
+-      return xhr;
++  function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
++    var subject = [], clip = [];
++    segments.forEach(function(segment) {
++      if ((n = segment.length - 1) <= 0) return;
++      var n, p0 = segment[0], p1 = segment[n];
++      if (d3_geo_sphericalEqual(p0, p1)) {
++        listener.lineStart();
++        for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
++        listener.lineEnd();
++        return;
++      }
++      var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
++      a.o = b;
++      subject.push(a);
++      clip.push(b);
++      a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
++      b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
++      a.o = b;
++      subject.push(a);
++      clip.push(b);
++    });
++    clip.sort(compare);
++    d3_geo_clipPolygonLinkCircular(subject);
++    d3_geo_clipPolygonLinkCircular(clip);
++    if (!subject.length) return;
++    for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
++      clip[i].e = entry = !entry;
+     }
+-    function response(request) {
+-      return dsv.parse(request.responseText);
++    var start = subject[0], points, point;
++    while (1) {
++      var current = start, isSubject = true;
++      while (current.v) if ((current = current.n) === start) return;
++      points = current.z;
++      listener.lineStart();
++      do {
++        current.v = current.o.v = true;
++        if (current.e) {
++          if (isSubject) {
++            for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
++          } else {
++            interpolate(current.x, current.n.x, 1, listener);
++          }
++          current = current.n;
++        } else {
++          if (isSubject) {
++            points = current.p.z;
++            for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
++          } else {
++            interpolate(current.x, current.p.x, -1, listener);
++          }
++          current = current.p;
++        }
++        current = current.o;
++        points = current.z;
++        isSubject = !isSubject;
++      } while (!current.v);
++      listener.lineEnd();
+     }
+-    function typedResponse(f) {
+-      return function(request) {
+-        return dsv.parse(request.responseText, f);
+-      };
++  }
++  function d3_geo_clipPolygonLinkCircular(array) {
++    if (!(n = array.length)) return;
++    var n, i = 0, a = array[0], b;
++    while (++i < n) {
++      a.n = b = array[i];
++      b.p = a;
++      a = b;
+     }
+-    dsv.parse = function(text, f) {
+-      var o;
+-      return dsv.parseRows(text, function(row, i) {
+-        if (o) return o(row, i - 1);
+-        var a = new Function("d", "return {" + row.map(function(name, i) {
+-          return JSON.stringify(name) + ": d[" + i + "]";
+-        }).join(",") + "}");
+-        o = f ? function(row, i) {
+-          return f(a(row), i);
+-        } : a;
+-      });
+-    };
+-    dsv.parseRows = function(text, f) {
+-      var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
+-      function token() {
+-        if (I >= N) return EOF;
+-        if (eol) return eol = false, EOL;
+-        var j = I;
+-        if (text.charCodeAt(j) === 34) {
+-          var i = j;
+-          while (i++ < N) {
+-            if (text.charCodeAt(i) === 34) {
+-              if (text.charCodeAt(i + 1) !== 34) break;
+-              ++i;
+-            }
+-          }
+-          I = i + 2;
+-          var c = text.charCodeAt(i + 1);
+-          if (c === 13) {
+-            eol = true;
+-            if (text.charCodeAt(i + 2) === 10) ++I;
+-          } else if (c === 10) {
+-            eol = true;
++    a.n = b = array[0];
++    b.p = a;
++  }
++  function d3_geo_clipPolygonIntersection(point, points, other, entry) {
++    this.x = point;
++    this.z = points;
++    this.o = other;
++    this.e = entry;
++    this.v = false;
++    this.n = this.p = null;
++  }
++  function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
++    return function(rotate, listener) {
++      var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
++      var clip = {
++        point: point,
++        lineStart: lineStart,
++        lineEnd: lineEnd,
++        polygonStart: function() {
++          clip.point = pointRing;
++          clip.lineStart = ringStart;
++          clip.lineEnd = ringEnd;
++          segments = [];
++          polygon = [];
++        },
++        polygonEnd: function() {
++          clip.point = point;
++          clip.lineStart = lineStart;
++          clip.lineEnd = lineEnd;
++          segments = d3.merge(segments);
++          var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
++          if (segments.length) {
++            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
++            d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
++          } else if (clipStartInside) {
++            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
++            listener.lineStart();
++            interpolate(null, null, 1, listener);
++            listener.lineEnd();
+           }
+-          return text.slice(j + 1, i).replace(/""/g, '"');
++          if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
++          segments = polygon = null;
++        },
++        sphere: function() {
++          listener.polygonStart();
++          listener.lineStart();
++          interpolate(null, null, 1, listener);
++          listener.lineEnd();
++          listener.polygonEnd();
+         }
+-        while (I < N) {
+-          var c = text.charCodeAt(I++), k = 1;
+-          if (c === 10) eol = true; else if (c === 13) {
+-            eol = true;
+-            if (text.charCodeAt(I) === 10) ++I, ++k;
+-          } else if (c !== delimiterCode) continue;
+-          return text.slice(j, I - k);
++      };
++      function point(λ, φ) {
++        var point = rotate(λ, φ);
++        if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
++      }
++      function pointLine(λ, φ) {
++        var point = rotate(λ, φ);
++        line.point(point[0], point[1]);
++      }
++      function lineStart() {
++        clip.point = pointLine;
++        line.lineStart();
++      }
++      function lineEnd() {
++        clip.point = point;
++        line.lineEnd();
++      }
++      var segments;
++      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
++      function pointRing(λ, φ) {
++        ring.push([ λ, φ ]);
++        var point = rotate(λ, φ);
++        ringListener.point(point[0], point[1]);
++      }
++      function ringStart() {
++        ringListener.lineStart();
++        ring = [];
++      }
++      function ringEnd() {
++        pointRing(ring[0][0], ring[0][1]);
++        ringListener.lineEnd();
++        var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
++        ring.pop();
++        polygon.push(ring);
++        ring = null;
++        if (!n) return;
++        if (clean & 1) {
++          segment = ringSegments[0];
++          var n = segment.length - 1, i = -1, point;
++          if (n > 0) {
++            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
++            listener.lineStart();
++            while (++i < n) listener.point((point = segment[i])[0], point[1]);
++            listener.lineEnd();
++          }
++          return;
+         }
+-        return text.slice(j);
++        if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
++        segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
+       }
+-      while ((t = token()) !== EOF) {
+-        var a = [];
+-        while (t !== EOL && t !== EOF) {
+-          a.push(t);
+-          t = token();
++      return clip;
++    };
++  }
++  function d3_geo_clipSegmentLength1(segment) {
++    return segment.length > 1;
++  }
++  function d3_geo_clipBufferListener() {
++    var lines = [], line;
++    return {
++      lineStart: function() {
++        lines.push(line = []);
++      },
++      point: function(λ, φ) {
++        line.push([ λ, φ ]);
++      },
++      lineEnd: d3_noop,
++      buffer: function() {
++        var buffer = lines;
++        lines = [];
++        line = null;
++        return buffer;
++      },
++      rejoin: function() {
++        if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
++      }
++    };
++  }
++  function d3_geo_clipSort(a, b) {
++    return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
++  }
++  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
++  function d3_geo_clipAntimeridianLine(listener) {
++    var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
++    return {
++      lineStart: function() {
++        listener.lineStart();
++        clean = 1;
++      },
++      point: function(λ1, φ1) {
++        var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
++        if (abs(dλ - π) < ε) {
++          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
++          listener.point(sλ0, φ0);
++          listener.lineEnd();
++          listener.lineStart();
++          listener.point(sλ1, φ0);
++          listener.point(λ1, φ0);
++          clean = 0;
++        } else if (sλ0 !== sλ1 && dλ >= π) {
++          if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
++          if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
++          φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
++          listener.point(sλ0, φ0);
++          listener.lineEnd();
++          listener.lineStart();
++          listener.point(sλ1, φ0);
++          clean = 0;
+         }
+-        if (f && (a = f(a, n++)) == null) continue;
+-        rows.push(a);
++        listener.point(λ0 = λ1, φ0 = φ1);
++        sλ0 = sλ1;
++      },
++      lineEnd: function() {
++        listener.lineEnd();
++        λ0 = φ0 = NaN;
++      },
++      clean: function() {
++        return 2 - clean;
+       }
+-      return rows;
+     };
+-    dsv.format = function(rows) {
+-      if (Array.isArray(rows[0])) return dsv.formatRows(rows);
+-      var fieldSet = new d3_Set(), fields = [];
+-      rows.forEach(function(row) {
+-        for (var field in row) {
+-          if (!fieldSet.has(field)) {
+-            fields.push(fieldSet.add(field));
++  }
++  function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
++    var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
++    return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
++  }
++  function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
++    var φ;
++    if (from == null) {
++      φ = direction * halfπ;
++      listener.point(-π, φ);
++      listener.point(0, φ);
++      listener.point(π, φ);
++      listener.point(π, 0);
++      listener.point(π, -φ);
++      listener.point(0, -φ);
++      listener.point(-π, -φ);
++      listener.point(-π, 0);
++      listener.point(-π, φ);
++    } else if (abs(from[0] - to[0]) > ε) {
++      var s = from[0] < to[0] ? π : -π;
++      φ = direction * s / 2;
++      listener.point(-s, φ);
++      listener.point(0, φ);
++      listener.point(s, φ);
++    } else {
++      listener.point(to[0], to[1]);
++    }
++  }
++  function d3_geo_pointInPolygon(point, polygon) {
++    var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
++    d3_geo_areaRingSum.reset();
++    for (var i = 0, n = polygon.length; i < n; ++i) {
++      var ring = polygon[i], m = ring.length;
++      if (!m) continue;
++      var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
++      while (true) {
++        if (j === m) j = 0;
++        point = ring[j];
++        var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
++        d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
++        polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
++        if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
++          var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
++          d3_geo_cartesianNormalize(arc);
++          var intersection = d3_geo_cartesianCross(meridianNormal, arc);
++          d3_geo_cartesianNormalize(intersection);
++          var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
++          if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
++            winding += antimeridian ^ dλ >= 0 ? 1 : -1;
++          }
++        }
++        if (!j++) break;
++        λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
++      }
++    }
++    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
++  }
++  function d3_geo_clipCircle(radius) {
++    var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
++    return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
++    function visible(λ, φ) {
++      return Math.cos(λ) * Math.cos(φ) > cr;
++    }
++    function clipLine(listener) {
++      var point0, c0, v0, v00, clean;
++      return {
++        lineStart: function() {
++          v00 = v0 = false;
++          clean = 1;
++        },
++        point: function(λ, φ) {
++          var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
++          if (!point0 && (v00 = v0 = v)) listener.lineStart();
++          if (v !== v0) {
++            point2 = intersect(point0, point1);
++            if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
++              point1[0] += ε;
++              point1[1] += ε;
++              v = visible(point1[0], point1[1]);
++            }
++          }
++          if (v !== v0) {
++            clean = 0;
++            if (v) {
++              listener.lineStart();
++              point2 = intersect(point1, point0);
++              listener.point(point2[0], point2[1]);
++            } else {
++              point2 = intersect(point0, point1);
++              listener.point(point2[0], point2[1]);
++              listener.lineEnd();
++            }
++            point0 = point2;
++          } else if (notHemisphere && point0 && smallRadius ^ v) {
++            var t;
++            if (!(c & c0) && (t = intersect(point1, point0, true))) {
++              clean = 0;
++              if (smallRadius) {
++                listener.lineStart();
++                listener.point(t[0][0], t[0][1]);
++                listener.point(t[1][0], t[1][1]);
++                listener.lineEnd();
++              } else {
++                listener.point(t[1][0], t[1][1]);
++                listener.lineEnd();
++                listener.lineStart();
++                listener.point(t[0][0], t[0][1]);
++              }
++            }
++          }
++          if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
++            listener.point(point1[0], point1[1]);
+           }
++          point0 = point1, v0 = v, c0 = c;
++        },
++        lineEnd: function() {
++          if (v0) listener.lineEnd();
++          point0 = null;
++        },
++        clean: function() {
++          return clean | (v00 && v0) << 1;
+         }
+-      });
+-      return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
+-        return fields.map(function(field) {
+-          return formatValue(row[field]);
+-        }).join(delimiter);
+-      })).join("\n");
+-    };
+-    dsv.formatRows = function(rows) {
+-      return rows.map(formatRow).join("\n");
+-    };
+-    function formatRow(row) {
+-      return row.map(formatValue).join(delimiter);
+-    }
+-    function formatValue(text) {
+-      return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
+-    }
+-    return dsv;
+-  };
+-  d3.csv = d3.dsv(",", "text/csv");
+-  d3.tsv = d3.dsv("	", "text/tab-separated-values");
+-  var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_frame = this[d3_vendorSymbol(this, "requestAnimationFrame")] || function(callback) {
+-    setTimeout(callback, 17);
+-  };
+-  d3.timer = function() {
+-    d3_timer.apply(this, arguments);
+-  };
+-  function d3_timer(callback, delay, then) {
+-    var n = arguments.length;
+-    if (n < 2) delay = 0;
+-    if (n < 3) then = Date.now();
+-    var time = then + delay, timer = {
+-      c: callback,
+-      t: time,
+-      n: null
+-    };
+-    if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
+-    d3_timer_queueTail = timer;
+-    if (!d3_timer_interval) {
+-      d3_timer_timeout = clearTimeout(d3_timer_timeout);
+-      d3_timer_interval = 1;
+-      d3_timer_frame(d3_timer_step);
++      };
+     }
+-    return timer;
+-  }
+-  function d3_timer_step() {
+-    var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
+-    if (delay > 24) {
+-      if (isFinite(delay)) {
+-        clearTimeout(d3_timer_timeout);
+-        d3_timer_timeout = setTimeout(d3_timer_step, delay);
++    function intersect(a, b, two) {
++      var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
++      var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
++      if (!determinant) return !two && a;
++      var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
++      d3_geo_cartesianAdd(A, B);
++      var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
++      if (t2 < 0) return;
++      var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
++      d3_geo_cartesianAdd(q, A);
++      q = d3_geo_spherical(q);
++      if (!two) return q;
++      var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
++      if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
++      var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
++      if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
++      if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
++        var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
++        d3_geo_cartesianAdd(q1, A);
++        return [ q, d3_geo_spherical(q1) ];
+       }
+-      d3_timer_interval = 0;
+-    } else {
+-      d3_timer_interval = 1;
+-      d3_timer_frame(d3_timer_step);
+     }
+-  }
+-  d3.timer.flush = function() {
+-    d3_timer_mark();
+-    d3_timer_sweep();
+-  };
+-  function d3_timer_mark() {
+-    var now = Date.now(), timer = d3_timer_queueHead;
+-    while (timer) {
+-      if (now >= timer.t && timer.c(now - timer.t)) timer.c = null;
+-      timer = timer.n;
++    function code(λ, φ) {
++      var r = smallRadius ? radius : π - radius, code = 0;
++      if (λ < -r) code |= 1; else if (λ > r) code |= 2;
++      if (φ < -r) code |= 4; else if (φ > r) code |= 8;
++      return code;
+     }
+-    return now;
+   }
+-  function d3_timer_sweep() {
+-    var t0, t1 = d3_timer_queueHead, time = Infinity;
+-    while (t1) {
+-      if (t1.c) {
+-        if (t1.t < time) time = t1.t;
+-        t1 = (t0 = t1).n;
+-      } else {
+-        t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
++  function d3_geom_clipLine(x0, y0, x1, y1) {
++    return function(line) {
++      var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
++      r = x0 - ax;
++      if (!dx && r > 0) return;
++      r /= dx;
++      if (dx < 0) {
++        if (r < t0) return;
++        if (r < t1) t1 = r;
++      } else if (dx > 0) {
++        if (r > t1) return;
++        if (r > t0) t0 = r;
+       }
+-    }
+-    d3_timer_queueTail = t0;
+-    return time;
+-  }
+-  function d3_format_precision(x, p) {
+-    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
++      r = x1 - ax;
++      if (!dx && r < 0) return;
++      r /= dx;
++      if (dx < 0) {
++        if (r > t1) return;
++        if (r > t0) t0 = r;
++      } else if (dx > 0) {
++        if (r < t0) return;
++        if (r < t1) t1 = r;
++      }
++      r = y0 - ay;
++      if (!dy && r > 0) return;
++      r /= dy;
++      if (dy < 0) {
++        if (r < t0) return;
++        if (r < t1) t1 = r;
++      } else if (dy > 0) {
++        if (r > t1) return;
++        if (r > t0) t0 = r;
++      }
++      r = y1 - ay;
++      if (!dy && r < 0) return;
++      r /= dy;
++      if (dy < 0) {
++        if (r > t1) return;
++        if (r > t0) t0 = r;
++      } else if (dy > 0) {
++        if (r < t0) return;
++        if (r < t1) t1 = r;
++      }
++      if (t0 > 0) line.a = {
++        x: ax + t0 * dx,
++        y: ay + t0 * dy
++      };
++      if (t1 < 1) line.b = {
++        x: ax + t1 * dx,
++        y: ay + t1 * dy
++      };
++      return line;
++    };
+   }
+-  d3.round = function(x, n) {
+-    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
+-  };
+-  var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
+-  d3.formatPrefix = function(value, precision) {
+-    var i = 0;
+-    if (value = +value) {
+-      if (value < 0) value *= -1;
+-      if (precision) value = d3.round(value, d3_format_precision(value, precision));
+-      i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
+-      i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
+-    }
+-    return d3_formatPrefixes[8 + i / 3];
+-  };
+-  function d3_formatPrefix(d, i) {
+-    var k = Math.pow(10, abs(8 - i) * 3);
+-    return {
+-      scale: i > 8 ? function(d) {
+-        return d / k;
+-      } : function(d) {
+-        return d * k;
++  var d3_geo_clipExtentMAX = 1e9;
++  d3.geo.clipExtent = function() {
++    var x0, y0, x1, y1, stream, clip, clipExtent = {
++      stream: function(output) {
++        if (stream) stream.valid = false;
++        stream = clip(output);
++        stream.valid = true;
++        return stream;
+       },
+-      symbol: d
++      extent: function(_) {
++        if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
++        clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
++        if (stream) stream.valid = false, stream = null;
++        return clipExtent;
++      }
+     };
+-  }
+-  function d3_locale_numberFormat(locale) {
+-    var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
+-      var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
+-      while (i > 0 && g > 0) {
+-        if (length + g + 1 > width) g = Math.max(1, width - length);
+-        t.push(value.substring(i -= g, i + g));
+-        if ((length += g + 1) > width) break;
+-        g = locale_grouping[j = (j + 1) % locale_grouping.length];
++    return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
++  };
++  function d3_geo_clipExtent(x0, y0, x1, y1) {
++    return function(listener) {
++      var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
++      var clip = {
++        point: point,
++        lineStart: lineStart,
++        lineEnd: lineEnd,
++        polygonStart: function() {
++          listener = bufferListener;
++          segments = [];
++          polygon = [];
++          clean = true;
++        },
++        polygonEnd: function() {
++          listener = listener_;
++          segments = d3.merge(segments);
++          var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
++          if (inside || visible) {
++            listener.polygonStart();
++            if (inside) {
++              listener.lineStart();
++              interpolate(null, null, 1, listener);
++              listener.lineEnd();
++            }
++            if (visible) {
++              d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
++            }
++            listener.polygonEnd();
++          }
++          segments = polygon = ring = null;
++        }
++      };
++      function insidePolygon(p) {
++        var wn = 0, n = polygon.length, y = p[1];
++        for (var i = 0; i < n; ++i) {
++          for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
++            b = v[j];
++            if (a[1] <= y) {
++              if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
++            } else {
++              if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
++            }
++            a = b;
++          }
++        }
++        return wn !== 0;
+       }
+-      return t.reverse().join(locale_thousands);
+-    } : d3_identity;
+-    return function(specifier) {
+-      var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
+-      if (precision) precision = +precision.substring(1);
+-      if (zfill || fill === "0" && align === "=") {
+-        zfill = fill = "0";
+-        align = "=";
++      function interpolate(from, to, direction, listener) {
++        var a = 0, a1 = 0;
++        if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
++          do {
++            listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
++          } while ((a = (a + direction + 4) % 4) !== a1);
++        } else {
++          listener.point(to[0], to[1]);
++        }
+       }
+-      switch (type) {
+-       case "n":
+-        comma = true;
+-        type = "g";
+-        break;
+-
+-       case "%":
+-        scale = 100;
+-        suffix = "%";
+-        type = "f";
+-        break;
+-
+-       case "p":
+-        scale = 100;
+-        suffix = "%";
+-        type = "r";
+-        break;
+-
+-       case "b":
+-       case "o":
+-       case "x":
+-       case "X":
+-        if (symbol === "#") prefix = "0" + type.toLowerCase();
+-
+-       case "c":
+-        exponent = false;
+-
+-       case "d":
+-        integer = true;
+-        precision = 0;
+-        break;
+-
+-       case "s":
+-        scale = -1;
+-        type = "r";
+-        break;
++      function pointVisible(x, y) {
++        return x0 <= x && x <= x1 && y0 <= y && y <= y1;
+       }
+-      if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
+-      if (type == "r" && !precision) type = "g";
+-      if (precision != null) {
+-        if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
++      function point(x, y) {
++        if (pointVisible(x, y)) listener.point(x, y);
+       }
+-      type = d3_format_types.get(type) || d3_format_typeDefault;
+-      var zcomma = zfill && comma;
+-      return function(value) {
+-        var fullSuffix = suffix;
+-        if (integer && value % 1) return "";
+-        var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
+-        if (scale < 0) {
+-          var unit = d3.formatPrefix(value, precision);
+-          value = unit.scale(value);
+-          fullSuffix = unit.symbol + suffix;
+-        } else {
+-          value *= scale;
++      var x__, y__, v__, x_, y_, v_, first, clean;
++      function lineStart() {
++        clip.point = linePoint;
++        if (polygon) polygon.push(ring = []);
++        first = true;
++        v_ = false;
++        x_ = y_ = NaN;
++      }
++      function lineEnd() {
++        if (segments) {
++          linePoint(x__, y__);
++          if (v__ && v_) bufferListener.rejoin();
++          segments.push(bufferListener.buffer());
+         }
+-        value = type(value, precision);
+-        var i = value.lastIndexOf("."), before, after;
+-        if (i < 0) {
+-          var j = exponent ? value.lastIndexOf("e") : -1;
+-          if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
++        clip.point = point;
++        if (v_) listener.lineEnd();
++      }
++      function linePoint(x, y) {
++        x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
++        y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
++        var v = pointVisible(x, y);
++        if (polygon) ring.push([ x, y ]);
++        if (first) {
++          x__ = x, y__ = y, v__ = v;
++          first = false;
++          if (v) {
++            listener.lineStart();
++            listener.point(x, y);
++          }
+         } else {
+-          before = value.substring(0, i);
+-          after = locale_decimal + value.substring(i + 1);
+-        }
+-        if (!zfill && comma) before = formatGroup(before, Infinity);
+-        var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
+-        if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
+-        negative += prefix;
+-        value = before + after;
+-        return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
+-      };
+-    };
+-  }
+-  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
+-  var d3_format_types = d3.map({
+-    b: function(x) {
+-      return x.toString(2);
+-    },
+-    c: function(x) {
+-      return String.fromCharCode(x);
+-    },
+-    o: function(x) {
+-      return x.toString(8);
+-    },
+-    x: function(x) {
+-      return x.toString(16);
+-    },
+-    X: function(x) {
+-      return x.toString(16).toUpperCase();
+-    },
+-    g: function(x, p) {
+-      return x.toPrecision(p);
+-    },
+-    e: function(x, p) {
+-      return x.toExponential(p);
+-    },
+-    f: function(x, p) {
+-      return x.toFixed(p);
+-    },
+-    r: function(x, p) {
+-      return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
+-    }
+-  });
+-  function d3_format_typeDefault(x) {
+-    return x + "";
+-  }
+-  var d3_time = d3.time = {}, d3_date = Date;
+-  function d3_date_utc() {
+-    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
+-  }
+-  d3_date_utc.prototype = {
+-    getDate: function() {
+-      return this._.getUTCDate();
+-    },
+-    getDay: function() {
+-      return this._.getUTCDay();
+-    },
+-    getFullYear: function() {
+-      return this._.getUTCFullYear();
+-    },
+-    getHours: function() {
+-      return this._.getUTCHours();
+-    },
+-    getMilliseconds: function() {
+-      return this._.getUTCMilliseconds();
+-    },
+-    getMinutes: function() {
+-      return this._.getUTCMinutes();
+-    },
+-    getMonth: function() {
+-      return this._.getUTCMonth();
+-    },
+-    getSeconds: function() {
+-      return this._.getUTCSeconds();
+-    },
+-    getTime: function() {
+-      return this._.getTime();
+-    },
+-    getTimezoneOffset: function() {
+-      return 0;
+-    },
+-    valueOf: function() {
+-      return this._.valueOf();
+-    },
+-    setDate: function() {
+-      d3_time_prototype.setUTCDate.apply(this._, arguments);
+-    },
+-    setDay: function() {
+-      d3_time_prototype.setUTCDay.apply(this._, arguments);
+-    },
+-    setFullYear: function() {
+-      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
+-    },
+-    setHours: function() {
+-      d3_time_prototype.setUTCHours.apply(this._, arguments);
+-    },
+-    setMilliseconds: function() {
+-      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
+-    },
+-    setMinutes: function() {
+-      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
+-    },
+-    setMonth: function() {
+-      d3_time_prototype.setUTCMonth.apply(this._, arguments);
+-    },
+-    setSeconds: function() {
+-      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
+-    },
+-    setTime: function() {
+-      d3_time_prototype.setTime.apply(this._, arguments);
+-    }
+-  };
+-  var d3_time_prototype = Date.prototype;
+-  function d3_time_interval(local, step, number) {
+-    function round(date) {
+-      var d0 = local(date), d1 = offset(d0, 1);
+-      return date - d0 < d1 - date ? d0 : d1;
+-    }
+-    function ceil(date) {
+-      step(date = local(new d3_date(date - 1)), 1);
+-      return date;
+-    }
+-    function offset(date, k) {
+-      step(date = new d3_date(+date), k);
+-      return date;
+-    }
+-    function range(t0, t1, dt) {
+-      var time = ceil(t0), times = [];
+-      if (dt > 1) {
+-        while (time < t1) {
+-          if (!(number(time) % dt)) times.push(new Date(+time));
+-          step(time, 1);
++          if (v && v_) listener.point(x, y); else {
++            var l = {
++              a: {
++                x: x_,
++                y: y_
++              },
++              b: {
++                x: x,
++                y: y
++              }
++            };
++            if (clipLine(l)) {
++              if (!v_) {
++                listener.lineStart();
++                listener.point(l.a.x, l.a.y);
++              }
++              listener.point(l.b.x, l.b.y);
++              if (!v) listener.lineEnd();
++              clean = false;
++            } else if (v) {
++              listener.lineStart();
++              listener.point(x, y);
++              clean = false;
++            }
++          }
+         }
+-      } else {
+-        while (time < t1) times.push(new Date(+time)), step(time, 1);
++        x_ = x, y_ = y, v_ = v;
+       }
+-      return times;
++      return clip;
++    };
++    function corner(p, direction) {
++      return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
+     }
+-    function range_utc(t0, t1, dt) {
+-      try {
+-        d3_date = d3_date_utc;
+-        var utc = new d3_date_utc();
+-        utc._ = t0;
+-        return range(utc, t1, dt);
+-      } finally {
+-        d3_date = Date;
+-      }
++    function compare(a, b) {
++      return comparePoints(a.x, b.x);
++    }
++    function comparePoints(a, b) {
++      var ca = corner(a, 1), cb = corner(b, 1);
++      return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
+     }
+-    local.floor = local;
+-    local.round = round;
+-    local.ceil = ceil;
+-    local.offset = offset;
+-    local.range = range;
+-    var utc = local.utc = d3_time_interval_utc(local);
+-    utc.floor = utc;
+-    utc.round = d3_time_interval_utc(round);
+-    utc.ceil = d3_time_interval_utc(ceil);
+-    utc.offset = d3_time_interval_utc(offset);
+-    utc.range = range_utc;
+-    return local;
+   }
+-  function d3_time_interval_utc(method) {
+-    return function(date, k) {
+-      try {
+-        d3_date = d3_date_utc;
+-        var utc = new d3_date_utc();
+-        utc._ = date;
+-        return method(utc, k)._;
+-      } finally {
+-        d3_date = Date;
+-      }
++  function d3_geo_conic(projectAt) {
++    var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
++    p.parallels = function(_) {
++      if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
++      return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
+     };
++    return p;
+   }
+-  d3_time.year = d3_time_interval(function(date) {
+-    date = d3_time.day(date);
+-    date.setMonth(0, 1);
+-    return date;
+-  }, function(date, offset) {
+-    date.setFullYear(date.getFullYear() + offset);
+-  }, function(date) {
+-    return date.getFullYear();
+-  });
+-  d3_time.years = d3_time.year.range;
+-  d3_time.years.utc = d3_time.year.utc.range;
+-  d3_time.day = d3_time_interval(function(date) {
+-    var day = new d3_date(2e3, 0);
+-    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
+-    return day;
+-  }, function(date, offset) {
+-    date.setDate(date.getDate() + offset);
+-  }, function(date) {
+-    return date.getDate() - 1;
+-  });
+-  d3_time.days = d3_time.day.range;
+-  d3_time.days.utc = d3_time.day.utc.range;
+-  d3_time.dayOfYear = function(date) {
+-    var year = d3_time.year(date);
+-    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
++  function d3_geo_conicEqualArea(φ0, φ1) {
++    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
++    function forward(λ, φ) {
++      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
++      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
++    }
++    forward.invert = function(x, y) {
++      var ρ0_y = ρ0 - y;
++      return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
++    };
++    return forward;
++  }
++  (d3.geo.conicEqualArea = function() {
++    return d3_geo_conic(d3_geo_conicEqualArea);
++  }).raw = d3_geo_conicEqualArea;
++  d3.geo.albers = function() {
++    return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
+   };
+-  [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
+-    i = 7 - i;
+-    var interval = d3_time[day] = d3_time_interval(function(date) {
+-      (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
+-      return date;
+-    }, function(date, offset) {
+-      date.setDate(date.getDate() + Math.floor(offset) * 7);
+-    }, function(date) {
+-      var day = d3_time.year(date).getDay();
+-      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
+-    });
+-    d3_time[day + "s"] = interval.range;
+-    d3_time[day + "s"].utc = interval.utc.range;
+-    d3_time[day + "OfYear"] = function(date) {
+-      var day = d3_time.year(date).getDay();
+-      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
++  d3.geo.albersUsa = function() {
++    var lower48 = d3.geo.albers();
++    var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
++    var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
++    var point, pointStream = {
++      point: function(x, y) {
++        point = [ x, y ];
++      }
++    }, lower48Point, alaskaPoint, hawaiiPoint;
++    function albersUsa(coordinates) {
++      var x = coordinates[0], y = coordinates[1];
++      point = null;
++      (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
++      return point;
++    }
++    albersUsa.invert = function(coordinates) {
++      var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
++      return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
+     };
+-  });
+-  d3_time.week = d3_time.sunday;
+-  d3_time.weeks = d3_time.sunday.range;
+-  d3_time.weeks.utc = d3_time.sunday.utc.range;
+-  d3_time.weekOfYear = d3_time.sundayOfYear;
+-  function d3_locale_timeFormat(locale) {
+-    var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
+-    function d3_time_format(template) {
+-      var n = template.length;
+-      function format(date) {
+-        var string = [], i = -1, j = 0, c, p, f;
+-        while (++i < n) {
+-          if (template.charCodeAt(i) === 37) {
+-            string.push(template.slice(j, i));
+-            if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
+-            if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
+-            string.push(c);
+-            j = i + 1;
+-          }
++    albersUsa.stream = function(stream) {
++      var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
++      return {
++        point: function(x, y) {
++          lower48Stream.point(x, y);
++          alaskaStream.point(x, y);
++          hawaiiStream.point(x, y);
++        },
++        sphere: function() {
++          lower48Stream.sphere();
++          alaskaStream.sphere();
++          hawaiiStream.sphere();
++        },
++        lineStart: function() {
++          lower48Stream.lineStart();
++          alaskaStream.lineStart();
++          hawaiiStream.lineStart();
++        },
++        lineEnd: function() {
++          lower48Stream.lineEnd();
++          alaskaStream.lineEnd();
++          hawaiiStream.lineEnd();
++        },
++        polygonStart: function() {
++          lower48Stream.polygonStart();
++          alaskaStream.polygonStart();
++          hawaiiStream.polygonStart();
++        },
++        polygonEnd: function() {
++          lower48Stream.polygonEnd();
++          alaskaStream.polygonEnd();
++          hawaiiStream.polygonEnd();
+         }
+-        string.push(template.slice(j, i));
+-        return string.join("");
+-      }
+-      format.parse = function(string) {
+-        var d = {
+-          y: 1900,
+-          m: 0,
+-          d: 1,
+-          H: 0,
+-          M: 0,
+-          S: 0,
+-          L: 0,
+-          Z: null
+-        }, i = d3_time_parse(d, template, string, 0);
+-        if (i != string.length) return null;
+-        if ("p" in d) d.H = d.H % 12 + d.p * 12;
+-        var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
+-        if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("W" in d || "U" in d) {
+-          if (!("w" in d)) d.w = "W" in d ? 1 : 0;
+-          date.setFullYear(d.y, 0, 1);
+-          date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
+-        } else date.setFullYear(d.y, d.m, d.d);
+-        date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
+-        return localZ ? date._ : date;
+-      };
+-      format.toString = function() {
+-        return template;
+       };
+-      return format;
++    };
++    albersUsa.precision = function(_) {
++      if (!arguments.length) return lower48.precision();
++      lower48.precision(_);
++      alaska.precision(_);
++      hawaii.precision(_);
++      return albersUsa;
++    };
++    albersUsa.scale = function(_) {
++      if (!arguments.length) return lower48.scale();
++      lower48.scale(_);
++      alaska.scale(_ * .35);
++      hawaii.scale(_);
++      return albersUsa.translate(lower48.translate());
++    };
++    albersUsa.translate = function(_) {
++      if (!arguments.length) return lower48.translate();
++      var k = lower48.scale(), x = +_[0], y = +_[1];
++      lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
++      alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
++      hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
++      return albersUsa;
++    };
++    return albersUsa.scale(1070);
++  };
++  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
++    point: d3_noop,
++    lineStart: d3_noop,
++    lineEnd: d3_noop,
++    polygonStart: function() {
++      d3_geo_pathAreaPolygon = 0;
++      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
++    },
++    polygonEnd: function() {
++      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
++      d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
+     }
+-    function d3_time_parse(date, template, string, j) {
+-      var c, p, t, i = 0, n = template.length, m = string.length;
+-      while (i < n) {
+-        if (j >= m) return -1;
+-        c = template.charCodeAt(i++);
+-        if (c === 37) {
+-          t = template.charAt(i++);
+-          p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
+-          if (!p || (j = p(date, string, j)) < 0) return -1;
+-        } else if (c != string.charCodeAt(j++)) {
+-          return -1;
+-        }
+-      }
+-      return j;
++  };
++  function d3_geo_pathAreaRingStart() {
++    var x00, y00, x0, y0;
++    d3_geo_pathArea.point = function(x, y) {
++      d3_geo_pathArea.point = nextPoint;
++      x00 = x0 = x, y00 = y0 = y;
++    };
++    function nextPoint(x, y) {
++      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
++      x0 = x, y0 = y;
+     }
+-    d3_time_format.utc = function(template) {
+-      var local = d3_time_format(template);
+-      function format(date) {
+-        try {
+-          d3_date = d3_date_utc;
+-          var utc = new d3_date();
+-          utc._ = date;
+-          return local(utc);
+-        } finally {
+-          d3_date = Date;
+-        }
+-      }
+-      format.parse = function(string) {
+-        try {
+-          d3_date = d3_date_utc;
+-          var date = local.parse(string);
+-          return date && date._;
+-        } finally {
+-          d3_date = Date;
+-        }
+-      };
+-      format.toString = local.toString;
+-      return format;
++    d3_geo_pathArea.lineEnd = function() {
++      nextPoint(x00, y00);
+     };
+-    d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
+-    var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
+-    locale_periods.forEach(function(p, i) {
+-      d3_time_periodLookup.set(p.toLowerCase(), i);
+-    });
+-    var d3_time_formats = {
+-      a: function(d) {
+-        return locale_shortDays[d.getDay()];
+-      },
+-      A: function(d) {
+-        return locale_days[d.getDay()];
+-      },
+-      b: function(d) {
+-        return locale_shortMonths[d.getMonth()];
+-      },
+-      B: function(d) {
+-        return locale_months[d.getMonth()];
+-      },
+-      c: d3_time_format(locale_dateTime),
+-      d: function(d, p) {
+-        return d3_time_formatPad(d.getDate(), p, 2);
+-      },
+-      e: function(d, p) {
+-        return d3_time_formatPad(d.getDate(), p, 2);
+-      },
+-      H: function(d, p) {
+-        return d3_time_formatPad(d.getHours(), p, 2);
+-      },
+-      I: function(d, p) {
+-        return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
+-      },
+-      j: function(d, p) {
+-        return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
+-      },
+-      L: function(d, p) {
+-        return d3_time_formatPad(d.getMilliseconds(), p, 3);
+-      },
+-      m: function(d, p) {
+-        return d3_time_formatPad(d.getMonth() + 1, p, 2);
+-      },
+-      M: function(d, p) {
+-        return d3_time_formatPad(d.getMinutes(), p, 2);
+-      },
+-      p: function(d) {
+-        return locale_periods[+(d.getHours() >= 12)];
+-      },
+-      S: function(d, p) {
+-        return d3_time_formatPad(d.getSeconds(), p, 2);
+-      },
+-      U: function(d, p) {
+-        return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
+-      },
+-      w: function(d) {
+-        return d.getDay();
++  }
++  var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
++  var d3_geo_pathBounds = {
++    point: d3_geo_pathBoundsPoint,
++    lineStart: d3_noop,
++    lineEnd: d3_noop,
++    polygonStart: d3_noop,
++    polygonEnd: d3_noop
++  };
++  function d3_geo_pathBoundsPoint(x, y) {
++    if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
++    if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
++    if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
++    if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
++  }
++  function d3_geo_pathBuffer() {
++    var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
++    var stream = {
++      point: point,
++      lineStart: function() {
++        stream.point = pointLineStart;
+       },
+-      W: function(d, p) {
+-        return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
++      lineEnd: lineEnd,
++      polygonStart: function() {
++        stream.lineEnd = lineEndPolygon;
+       },
+-      x: d3_time_format(locale_date),
+-      X: d3_time_format(locale_time),
+-      y: function(d, p) {
+-        return d3_time_formatPad(d.getFullYear() % 100, p, 2);
++      polygonEnd: function() {
++        stream.lineEnd = lineEnd;
++        stream.point = point;
+       },
+-      Y: function(d, p) {
+-        return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
++      pointRadius: function(_) {
++        pointCircle = d3_geo_pathBufferCircle(_);
++        return stream;
+       },
+-      Z: d3_time_zone,
+-      "%": function() {
+-        return "%";
++      result: function() {
++        if (buffer.length) {
++          var result = buffer.join("");
++          buffer = [];
++          return result;
++        }
+       }
+     };
+-    var d3_time_parsers = {
+-      a: d3_time_parseWeekdayAbbrev,
+-      A: d3_time_parseWeekday,
+-      b: d3_time_parseMonthAbbrev,
+-      B: d3_time_parseMonth,
+-      c: d3_time_parseLocaleFull,
+-      d: d3_time_parseDay,
+-      e: d3_time_parseDay,
+-      H: d3_time_parseHour24,
+-      I: d3_time_parseHour24,
+-      j: d3_time_parseDayOfYear,
+-      L: d3_time_parseMilliseconds,
+-      m: d3_time_parseMonthNumber,
+-      M: d3_time_parseMinutes,
+-      p: d3_time_parseAmPm,
+-      S: d3_time_parseSeconds,
+-      U: d3_time_parseWeekNumberSunday,
+-      w: d3_time_parseWeekdayNumber,
+-      W: d3_time_parseWeekNumberMonday,
+-      x: d3_time_parseLocaleDate,
+-      X: d3_time_parseLocaleTime,
+-      y: d3_time_parseYear,
+-      Y: d3_time_parseFullYear,
+-      Z: d3_time_parseZone,
+-      "%": d3_time_parseLiteralPercent
++    function point(x, y) {
++      buffer.push("M", x, ",", y, pointCircle);
++    }
++    function pointLineStart(x, y) {
++      buffer.push("M", x, ",", y);
++      stream.point = pointLine;
++    }
++    function pointLine(x, y) {
++      buffer.push("L", x, ",", y);
++    }
++    function lineEnd() {
++      stream.point = point;
++    }
++    function lineEndPolygon() {
++      buffer.push("Z");
++    }
++    return stream;
++  }
++  function d3_geo_pathBufferCircle(radius) {
++    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
++  }
++  var d3_geo_pathCentroid = {
++    point: d3_geo_pathCentroidPoint,
++    lineStart: d3_geo_pathCentroidLineStart,
++    lineEnd: d3_geo_pathCentroidLineEnd,
++    polygonStart: function() {
++      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
++    },
++    polygonEnd: function() {
++      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
++      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
++      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
++    }
++  };
++  function d3_geo_pathCentroidPoint(x, y) {
++    d3_geo_centroidX0 += x;
++    d3_geo_centroidY0 += y;
++    ++d3_geo_centroidZ0;
++  }
++  function d3_geo_pathCentroidLineStart() {
++    var x0, y0;
++    d3_geo_pathCentroid.point = function(x, y) {
++      d3_geo_pathCentroid.point = nextPoint;
++      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
++    };
++    function nextPoint(x, y) {
++      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
++      d3_geo_centroidX1 += z * (x0 + x) / 2;
++      d3_geo_centroidY1 += z * (y0 + y) / 2;
++      d3_geo_centroidZ1 += z;
++      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
++    }
++  }
++  function d3_geo_pathCentroidLineEnd() {
++    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
++  }
++  function d3_geo_pathCentroidRingStart() {
++    var x00, y00, x0, y0;
++    d3_geo_pathCentroid.point = function(x, y) {
++      d3_geo_pathCentroid.point = nextPoint;
++      d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
++    };
++    function nextPoint(x, y) {
++      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
++      d3_geo_centroidX1 += z * (x0 + x) / 2;
++      d3_geo_centroidY1 += z * (y0 + y) / 2;
++      d3_geo_centroidZ1 += z;
++      z = y0 * x - x0 * y;
++      d3_geo_centroidX2 += z * (x0 + x);
++      d3_geo_centroidY2 += z * (y0 + y);
++      d3_geo_centroidZ2 += z * 3;
++      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
++    }
++    d3_geo_pathCentroid.lineEnd = function() {
++      nextPoint(x00, y00);
++    };
++  }
++  function d3_geo_pathContext(context) {
++    var pointRadius = 4.5;
++    var stream = {
++      point: point,
++      lineStart: function() {
++        stream.point = pointLineStart;
++      },
++      lineEnd: lineEnd,
++      polygonStart: function() {
++        stream.lineEnd = lineEndPolygon;
++      },
++      polygonEnd: function() {
++        stream.lineEnd = lineEnd;
++        stream.point = point;
++      },
++      pointRadius: function(_) {
++        pointRadius = _;
++        return stream;
++      },
++      result: d3_noop
+     };
+-    function d3_time_parseWeekdayAbbrev(date, string, i) {
+-      d3_time_dayAbbrevRe.lastIndex = 0;
+-      var n = d3_time_dayAbbrevRe.exec(string.slice(i));
+-      return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
++    function point(x, y) {
++      context.moveTo(x + pointRadius, y);
++      context.arc(x, y, pointRadius, 0, τ);
+     }
+-    function d3_time_parseWeekday(date, string, i) {
+-      d3_time_dayRe.lastIndex = 0;
+-      var n = d3_time_dayRe.exec(string.slice(i));
+-      return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
++    function pointLineStart(x, y) {
++      context.moveTo(x, y);
++      stream.point = pointLine;
+     }
+-    function d3_time_parseMonthAbbrev(date, string, i) {
+-      d3_time_monthAbbrevRe.lastIndex = 0;
+-      var n = d3_time_monthAbbrevRe.exec(string.slice(i));
+-      return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
++    function pointLine(x, y) {
++      context.lineTo(x, y);
+     }
+-    function d3_time_parseMonth(date, string, i) {
+-      d3_time_monthRe.lastIndex = 0;
+-      var n = d3_time_monthRe.exec(string.slice(i));
+-      return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
++    function lineEnd() {
++      stream.point = point;
+     }
+-    function d3_time_parseLocaleFull(date, string, i) {
+-      return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
++    function lineEndPolygon() {
++      context.closePath();
+     }
+-    function d3_time_parseLocaleDate(date, string, i) {
+-      return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
++    return stream;
++  }
++  function d3_geo_resample(project) {
++    var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
++    function resample(stream) {
++      return (maxDepth ? resampleRecursive : resampleNone)(stream);
+     }
+-    function d3_time_parseLocaleTime(date, string, i) {
+-      return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
++    function resampleNone(stream) {
++      return d3_geo_transformPoint(stream, function(x, y) {
++        x = project(x, y);
++        stream.point(x[0], x[1]);
++      });
+     }
+-    function d3_time_parseAmPm(date, string, i) {
+-      var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
+-      return n == null ? -1 : (date.p = n, i);
++    function resampleRecursive(stream) {
++      var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
++      var resample = {
++        point: point,
++        lineStart: lineStart,
++        lineEnd: lineEnd,
++        polygonStart: function() {
++          stream.polygonStart();
++          resample.lineStart = ringStart;
++        },
++        polygonEnd: function() {
++          stream.polygonEnd();
++          resample.lineStart = lineStart;
++        }
++      };
++      function point(x, y) {
++        x = project(x, y);
++        stream.point(x[0], x[1]);
++      }
++      function lineStart() {
++        x0 = NaN;
++        resample.point = linePoint;
++        stream.lineStart();
++      }
++      function linePoint(λ, φ) {
++        var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
++        resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
++        stream.point(x0, y0);
++      }
++      function lineEnd() {
++        resample.point = point;
++        stream.lineEnd();
++      }
++      function ringStart() {
++        lineStart();
++        resample.point = ringPoint;
++        resample.lineEnd = ringEnd;
++      }
++      function ringPoint(λ, φ) {
++        linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
++        resample.point = linePoint;
++      }
++      function ringEnd() {
++        resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
++        resample.lineEnd = lineEnd;
++        lineEnd();
++      }
++      return resample;
+     }
+-    return d3_time_format;
+-  }
+-  var d3_time_formatPads = {
+-    "-": "",
+-    _: " ",
+-    "0": "0"
+-  }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
+-  function d3_time_formatPad(value, fill, width) {
+-    var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
+-    return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
+-  }
+-  function d3_time_formatRe(names) {
+-    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
+-  }
+-  function d3_time_formatLookup(names) {
+-    var map = new d3_Map(), i = -1, n = names.length;
+-    while (++i < n) map.set(names[i].toLowerCase(), i);
+-    return map;
+-  }
+-  function d3_time_parseWeekdayNumber(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i, i + 1));
+-    return n ? (date.w = +n[0], i + n[0].length) : -1;
+-  }
+-  function d3_time_parseWeekNumberSunday(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i));
+-    return n ? (date.U = +n[0], i + n[0].length) : -1;
+-  }
+-  function d3_time_parseWeekNumberMonday(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i));
+-    return n ? (date.W = +n[0], i + n[0].length) : -1;
+-  }
+-  function d3_time_parseFullYear(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i, i + 4));
+-    return n ? (date.y = +n[0], i + n[0].length) : -1;
+-  }
+-  function d3_time_parseYear(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+-    return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
++    function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
++      var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
++      if (d2 > 4 * δ2 && depth--) {
++        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
++        if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
++          resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
++          stream.point(x2, y2);
++          resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
++        }
++      }
++    }
++    resample.precision = function(_) {
++      if (!arguments.length) return Math.sqrt(δ2);
++      maxDepth = (δ2 = _ * _) > 0 && 16;
++      return resample;
++    };
++    return resample;
+   }
+-  function d3_time_parseZone(date, string, i) {
+-    return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string, 
+-    i + 5) : -1;
++  d3.geo.path = function() {
++    var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
++    function path(object) {
++      if (object) {
++        if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
++        if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
++        d3.geo.stream(object, cacheStream);
++      }
++      return contextStream.result();
++    }
++    path.area = function(object) {
++      d3_geo_pathAreaSum = 0;
++      d3.geo.stream(object, projectStream(d3_geo_pathArea));
++      return d3_geo_pathAreaSum;
++    };
++    path.centroid = function(object) {
++      d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
++      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
++      return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
++    };
++    path.bounds = function(object) {
++      d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
++      d3.geo.stream(object, projectStream(d3_geo_pathBounds));
++      return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
++    };
++    path.projection = function(_) {
++      if (!arguments.length) return projection;
++      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
++      return reset();
++    };
++    path.context = function(_) {
++      if (!arguments.length) return context;
++      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
++      if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
++      return reset();
++    };
++    path.pointRadius = function(_) {
++      if (!arguments.length) return pointRadius;
++      pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
++      return path;
++    };
++    function reset() {
++      cacheStream = null;
++      return path;
++    }
++    return path.projection(d3.geo.albersUsa()).context(null);
++  };
++  function d3_geo_pathProjectStream(project) {
++    var resample = d3_geo_resample(function(x, y) {
++      return project([ x * d3_degrees, y * d3_degrees ]);
++    });
++    return function(stream) {
++      return d3_geo_projectionRadians(resample(stream));
++    };
+   }
+-  function d3_time_expandYear(d) {
+-    return d + (d > 68 ? 1900 : 2e3);
++  d3.geo.transform = function(methods) {
++    return {
++      stream: function(stream) {
++        var transform = new d3_geo_transform(stream);
++        for (var k in methods) transform[k] = methods[k];
++        return transform;
++      }
++    };
++  };
++  function d3_geo_transform(stream) {
++    this.stream = stream;
+   }
+-  function d3_time_parseMonthNumber(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+-    return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
++  d3_geo_transform.prototype = {
++    point: function(x, y) {
++      this.stream.point(x, y);
++    },
++    sphere: function() {
++      this.stream.sphere();
++    },
++    lineStart: function() {
++      this.stream.lineStart();
++    },
++    lineEnd: function() {
++      this.stream.lineEnd();
++    },
++    polygonStart: function() {
++      this.stream.polygonStart();
++    },
++    polygonEnd: function() {
++      this.stream.polygonEnd();
++    }
++  };
++  function d3_geo_transformPoint(stream, point) {
++    return {
++      point: point,
++      sphere: function() {
++        stream.sphere();
++      },
++      lineStart: function() {
++        stream.lineStart();
++      },
++      lineEnd: function() {
++        stream.lineEnd();
++      },
++      polygonStart: function() {
++        stream.polygonStart();
++      },
++      polygonEnd: function() {
++        stream.polygonEnd();
++      }
++    };
+   }
+-  function d3_time_parseDay(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+-    return n ? (date.d = +n[0], i + n[0].length) : -1;
++  d3.geo.projection = d3_geo_projection;
++  d3.geo.projectionMutator = d3_geo_projectionMutator;
++  function d3_geo_projection(project) {
++    return d3_geo_projectionMutator(function() {
++      return project;
++    })();
+   }
+-  function d3_time_parseDayOfYear(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
+-    return n ? (date.j = +n[0], i + n[0].length) : -1;
++  function d3_geo_projectionMutator(projectAt) {
++    var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
++      x = project(x, y);
++      return [ x[0] * k + δx, δy - x[1] * k ];
++    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
++    function projection(point) {
++      point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
++      return [ point[0] * k + δx, δy - point[1] * k ];
++    }
++    function invert(point) {
++      point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
++      return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
++    }
++    projection.stream = function(output) {
++      if (stream) stream.valid = false;
++      stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
++      stream.valid = true;
++      return stream;
++    };
++    projection.clipAngle = function(_) {
++      if (!arguments.length) return clipAngle;
++      preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
++      return invalidate();
++    };
++    projection.clipExtent = function(_) {
++      if (!arguments.length) return clipExtent;
++      clipExtent = _;
++      postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
++      return invalidate();
++    };
++    projection.scale = function(_) {
++      if (!arguments.length) return k;
++      k = +_;
++      return reset();
++    };
++    projection.translate = function(_) {
++      if (!arguments.length) return [ x, y ];
++      x = +_[0];
++      y = +_[1];
++      return reset();
++    };
++    projection.center = function(_) {
++      if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
++      λ = _[0] % 360 * d3_radians;
++      φ = _[1] % 360 * d3_radians;
++      return reset();
++    };
++    projection.rotate = function(_) {
++      if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
++      δλ = _[0] % 360 * d3_radians;
++      δφ = _[1] % 360 * d3_radians;
++      δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
++      return reset();
++    };
++    d3.rebind(projection, projectResample, "precision");
++    function reset() {
++      projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
++      var center = project(λ, φ);
++      δx = x - center[0] * k;
++      δy = y + center[1] * k;
++      return invalidate();
++    }
++    function invalidate() {
++      if (stream) stream.valid = false, stream = null;
++      return projection;
++    }
++    return function() {
++      project = projectAt.apply(this, arguments);
++      projection.invert = project.invert && invert;
++      return reset();
++    };
+   }
+-  function d3_time_parseHour24(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+-    return n ? (date.H = +n[0], i + n[0].length) : -1;
++  function d3_geo_projectionRadians(stream) {
++    return d3_geo_transformPoint(stream, function(x, y) {
++      stream.point(x * d3_radians, y * d3_radians);
++    });
+   }
+-  function d3_time_parseMinutes(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+-    return n ? (date.M = +n[0], i + n[0].length) : -1;
++  function d3_geo_equirectangular(λ, φ) {
++    return [ λ, φ ];
+   }
+-  function d3_time_parseSeconds(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
+-    return n ? (date.S = +n[0], i + n[0].length) : -1;
++  (d3.geo.equirectangular = function() {
++    return d3_geo_projection(d3_geo_equirectangular);
++  }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
++  d3.geo.rotation = function(rotate) {
++    rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
++    function forward(coordinates) {
++      coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
++      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
++    }
++    forward.invert = function(coordinates) {
++      coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
++      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
++    };
++    return forward;
++  };
++  function d3_geo_identityRotation(λ, φ) {
++    return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
+   }
+-  function d3_time_parseMilliseconds(date, string, i) {
+-    d3_time_numberRe.lastIndex = 0;
+-    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
+-    return n ? (date.L = +n[0], i + n[0].length) : -1;
++  d3_geo_identityRotation.invert = d3_geo_equirectangular;
++  function d3_geo_rotation(δλ, δφ, δγ) {
++    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
+   }
+-  function d3_time_zone(d) {
+-    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
+-    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
++  function d3_geo_forwardRotationλ(δλ) {
++    return function(λ, φ) {
++      return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
++    };
+   }
+-  function d3_time_parseLiteralPercent(date, string, i) {
+-    d3_time_percentRe.lastIndex = 0;
+-    var n = d3_time_percentRe.exec(string.slice(i, i + 1));
+-    return n ? i + n[0].length : -1;
++  function d3_geo_rotationλ(δλ) {
++    var rotation = d3_geo_forwardRotationλ(δλ);
++    rotation.invert = d3_geo_forwardRotationλ(-δλ);
++    return rotation;
+   }
+-  function d3_time_formatMulti(formats) {
+-    var n = formats.length, i = -1;
+-    while (++i < n) formats[i][0] = this(formats[i][0]);
+-    return function(date) {
+-      var i = 0, f = formats[i];
+-      while (!f[1](date)) f = formats[++i];
+-      return f[0](date);
++  function d3_geo_rotationφγ(δφ, δγ) {
++    var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
++    function rotation(λ, φ) {
++      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
++      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
++    }
++    rotation.invert = function(λ, φ) {
++      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
++      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
+     };
++    return rotation;
+   }
+-  d3.locale = function(locale) {
+-    return {
+-      numberFormat: d3_locale_numberFormat(locale),
+-      timeFormat: d3_locale_timeFormat(locale)
+-    };
+-  };
+-  var d3_locale_enUS = d3.locale({
+-    decimal: ".",
+-    thousands: ",",
+-    grouping: [ 3 ],
+-    currency: [ "$", "" ],
+-    dateTime: "%a %b %e %X %Y",
+-    date: "%m/%d/%Y",
+-    time: "%H:%M:%S",
+-    periods: [ "AM", "PM" ],
+-    days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
+-    shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
+-    months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
+-    shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
+-  });
+-  d3.format = d3_locale_enUS.numberFormat;
+-  d3.geo = {};
+-  function d3_adder() {}
+-  d3_adder.prototype = {
+-    s: 0,
+-    t: 0,
+-    add: function(y) {
+-      d3_adderSum(y, this.t, d3_adderTemp);
+-      d3_adderSum(d3_adderTemp.s, this.s, this);
+-      if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
+-    },
+-    reset: function() {
+-      this.s = this.t = 0;
+-    },
+-    valueOf: function() {
+-      return this.s;
++  d3.geo.circle = function() {
++    var origin = [ 0, 0 ], angle, precision = 6, interpolate;
++    function circle() {
++      var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
++      interpolate(null, null, 1, {
++        point: function(x, y) {
++          ring.push(x = rotate(x, y));
++          x[0] *= d3_degrees, x[1] *= d3_degrees;
++        }
++      });
++      return {
++        type: "Polygon",
++        coordinates: [ ring ]
++      };
+     }
++    circle.origin = function(x) {
++      if (!arguments.length) return origin;
++      origin = x;
++      return circle;
++    };
++    circle.angle = function(x) {
++      if (!arguments.length) return angle;
++      interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
++      return circle;
++    };
++    circle.precision = function(_) {
++      if (!arguments.length) return precision;
++      interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
++      return circle;
++    };
++    return circle.angle(90);
+   };
+-  var d3_adderTemp = new d3_adder();
+-  function d3_adderSum(a, b, o) {
+-    var x = o.s = a + b, bv = x - a, av = x - bv;
+-    o.t = a - av + (b - bv);
++  function d3_geo_circleInterpolate(radius, precision) {
++    var cr = Math.cos(radius), sr = Math.sin(radius);
++    return function(from, to, direction, listener) {
++      var step = direction * precision;
++      if (from != null) {
++        from = d3_geo_circleAngle(cr, from);
++        to = d3_geo_circleAngle(cr, to);
++        if (direction > 0 ? from < to : from > to) from += direction * τ;
++      } else {
++        from = radius + direction * τ;
++        to = radius - .5 * step;
++      }
++      for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
++        listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
++      }
++    };
+   }
+-  d3.geo.stream = function(object, listener) {
+-    if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
+-      d3_geo_streamObjectType[object.type](object, listener);
+-    } else {
+-      d3_geo_streamGeometry(object, listener);
+-    }
++  function d3_geo_circleAngle(cr, point) {
++    var a = d3_geo_cartesian(point);
++    a[0] -= cr;
++    d3_geo_cartesianNormalize(a);
++    var angle = d3_acos(-a[1]);
++    return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
++  }
++  d3.geo.distance = function(a, b) {
++    var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
++    return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
+   };
+-  function d3_geo_streamGeometry(geometry, listener) {
+-    if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
+-      d3_geo_streamGeometryType[geometry.type](geometry, listener);
++  d3.geo.graticule = function() {
++    var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
++    function graticule() {
++      return {
++        type: "MultiLineString",
++        coordinates: lines()
++      };
+     }
+-  }
+-  var d3_geo_streamObjectType = {
+-    Feature: function(feature, listener) {
+-      d3_geo_streamGeometry(feature.geometry, listener);
+-    },
+-    FeatureCollection: function(object, listener) {
+-      var features = object.features, i = -1, n = features.length;
+-      while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
++    function lines() {
++      return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
++        return abs(x % DX) > ε;
++      }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
++        return abs(y % DY) > ε;
++      }).map(y));
+     }
++    graticule.lines = function() {
++      return lines().map(function(coordinates) {
++        return {
++          type: "LineString",
++          coordinates: coordinates
++        };
++      });
++    };
++    graticule.outline = function() {
++      return {
++        type: "Polygon",
++        coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
++      };
++    };
++    graticule.extent = function(_) {
++      if (!arguments.length) return graticule.minorExtent();
++      return graticule.majorExtent(_).minorExtent(_);
++    };
++    graticule.majorExtent = function(_) {
++      if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
++      X0 = +_[0][0], X1 = +_[1][0];
++      Y0 = +_[0][1], Y1 = +_[1][1];
++      if (X0 > X1) _ = X0, X0 = X1, X1 = _;
++      if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
++      return graticule.precision(precision);
++    };
++    graticule.minorExtent = function(_) {
++      if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
++      x0 = +_[0][0], x1 = +_[1][0];
++      y0 = +_[0][1], y1 = +_[1][1];
++      if (x0 > x1) _ = x0, x0 = x1, x1 = _;
++      if (y0 > y1) _ = y0, y0 = y1, y1 = _;
++      return graticule.precision(precision);
++    };
++    graticule.step = function(_) {
++      if (!arguments.length) return graticule.minorStep();
++      return graticule.majorStep(_).minorStep(_);
++    };
++    graticule.majorStep = function(_) {
++      if (!arguments.length) return [ DX, DY ];
++      DX = +_[0], DY = +_[1];
++      return graticule;
++    };
++    graticule.minorStep = function(_) {
++      if (!arguments.length) return [ dx, dy ];
++      dx = +_[0], dy = +_[1];
++      return graticule;
++    };
++    graticule.precision = function(_) {
++      if (!arguments.length) return precision;
++      precision = +_;
++      x = d3_geo_graticuleX(y0, y1, 90);
++      y = d3_geo_graticuleY(x0, x1, precision);
++      X = d3_geo_graticuleX(Y0, Y1, 90);
++      Y = d3_geo_graticuleY(X0, X1, precision);
++      return graticule;
++    };
++    return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
+   };
+-  var d3_geo_streamGeometryType = {
+-    Sphere: function(object, listener) {
+-      listener.sphere();
+-    },
+-    Point: function(object, listener) {
+-      object = object.coordinates;
+-      listener.point(object[0], object[1], object[2]);
+-    },
+-    MultiPoint: function(object, listener) {
+-      var coordinates = object.coordinates, i = -1, n = coordinates.length;
+-      while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
+-    },
+-    LineString: function(object, listener) {
+-      d3_geo_streamLine(object.coordinates, listener, 0);
+-    },
+-    MultiLineString: function(object, listener) {
+-      var coordinates = object.coordinates, i = -1, n = coordinates.length;
+-      while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
+-    },
+-    Polygon: function(object, listener) {
+-      d3_geo_streamPolygon(object.coordinates, listener);
+-    },
+-    MultiPolygon: function(object, listener) {
+-      var coordinates = object.coordinates, i = -1, n = coordinates.length;
+-      while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
+-    },
+-    GeometryCollection: function(object, listener) {
+-      var geometries = object.geometries, i = -1, n = geometries.length;
+-      while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
++  function d3_geo_graticuleX(y0, y1, dy) {
++    var y = d3.range(y0, y1 - ε, dy).concat(y1);
++    return function(x) {
++      return y.map(function(y) {
++        return [ x, y ];
++      });
++    };
++  }
++  function d3_geo_graticuleY(x0, x1, dx) {
++    var x = d3.range(x0, x1 - ε, dx).concat(x1);
++    return function(y) {
++      return x.map(function(x) {
++        return [ x, y ];
++      });
++    };
++  }
++  function d3_source(d) {
++    return d.source;
++  }
++  function d3_target(d) {
++    return d.target;
++  }
++  d3.geo.greatArc = function() {
++    var source = d3_source, source_, target = d3_target, target_;
++    function greatArc() {
++      return {
++        type: "LineString",
++        coordinates: [ source_ || source.apply(this, arguments), target_ || target.apply(this, arguments) ]
++      };
+     }
++    greatArc.distance = function() {
++      return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
++    };
++    greatArc.source = function(_) {
++      if (!arguments.length) return source;
++      source = _, source_ = typeof _ === "function" ? null : _;
++      return greatArc;
++    };
++    greatArc.target = function(_) {
++      if (!arguments.length) return target;
++      target = _, target_ = typeof _ === "function" ? null : _;
++      return greatArc;
++    };
++    greatArc.precision = function() {
++      return arguments.length ? greatArc : 0;
++    };
++    return greatArc;
+   };
+-  function d3_geo_streamLine(coordinates, listener, closed) {
+-    var i = -1, n = coordinates.length - closed, coordinate;
+-    listener.lineStart();
+-    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
+-    listener.lineEnd();
+-  }
+-  function d3_geo_streamPolygon(coordinates, listener) {
+-    var i = -1, n = coordinates.length;
+-    listener.polygonStart();
+-    while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
+-    listener.polygonEnd();
++  d3.geo.interpolate = function(source, target) {
++    return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
++  };
++  function d3_geo_interpolate(x0, y0, x1, y1) {
++    var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
++    var interpolate = d ? function(t) {
++      var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
++      return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
++    } : function() {
++      return [ x0 * d3_degrees, y0 * d3_degrees ];
++    };
++    interpolate.distance = d;
++    return interpolate;
+   }
+-  d3.geo.area = function(object) {
+-    d3_geo_areaSum = 0;
+-    d3.geo.stream(object, d3_geo_area);
+-    return d3_geo_areaSum;
++  d3.geo.length = function(object) {
++    d3_geo_lengthSum = 0;
++    d3.geo.stream(object, d3_geo_length);
++    return d3_geo_lengthSum;
+   };
+-  var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
+-  var d3_geo_area = {
+-    sphere: function() {
+-      d3_geo_areaSum += 4 * π;
+-    },
++  var d3_geo_lengthSum;
++  var d3_geo_length = {
++    sphere: d3_noop,
+     point: d3_noop,
+-    lineStart: d3_noop,
++    lineStart: d3_geo_lengthLineStart,
+     lineEnd: d3_noop,
+-    polygonStart: function() {
+-      d3_geo_areaRingSum.reset();
+-      d3_geo_area.lineStart = d3_geo_areaRingStart;
+-    },
+-    polygonEnd: function() {
+-      var area = 2 * d3_geo_areaRingSum;
+-      d3_geo_areaSum += area < 0 ? 4 * π + area : area;
+-      d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
+-    }
++    polygonStart: d3_noop,
++    polygonEnd: d3_noop
+   };
+-  function d3_geo_areaRingStart() {
+-    var λ00, φ00, λ0, cosφ0, sinφ0;
+-    d3_geo_area.point = function(λ, φ) {
+-      d3_geo_area.point = nextPoint;
+-      λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4), 
+-      sinφ0 = Math.sin(φ);
++  function d3_geo_lengthLineStart() {
++    var λ0, sinφ0, cosφ0;
++    d3_geo_length.point = function(λ, φ) {
++      λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
++      d3_geo_length.point = nextPoint;
++    };
++    d3_geo_length.lineEnd = function() {
++      d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
+     };
+     function nextPoint(λ, φ) {
+-      λ *= d3_radians;
+-      φ = φ * d3_radians / 2 + π / 4;
+-      var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
+-      d3_geo_areaRingSum.add(Math.atan2(v, u));
+-      λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
++      var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
++      d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
++      λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
+     }
+-    d3_geo_area.lineEnd = function() {
+-      nextPoint(λ00, φ00);
+-    };
+-  }
+-  function d3_geo_cartesian(spherical) {
+-    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
+-    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
+-  }
+-  function d3_geo_cartesianDot(a, b) {
+-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+-  }
+-  function d3_geo_cartesianCross(a, b) {
+-    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
+-  }
+-  function d3_geo_cartesianAdd(a, b) {
+-    a[0] += b[0];
+-    a[1] += b[1];
+-    a[2] += b[2];
+   }
+-  function d3_geo_cartesianScale(vector, k) {
+-    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
++  function d3_geo_azimuthal(scale, angle) {
++    function azimuthal(λ, φ) {
++      var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
++      return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
++    }
++    azimuthal.invert = function(x, y) {
++      var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
++      return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
++    };
++    return azimuthal;
+   }
+-  function d3_geo_cartesianNormalize(d) {
+-    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
+-    d[0] /= l;
+-    d[1] /= l;
+-    d[2] /= l;
++  var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
++    return Math.sqrt(2 / (1 + cosλcosφ));
++  }, function(ρ) {
++    return 2 * Math.asin(ρ / 2);
++  });
++  (d3.geo.azimuthalEqualArea = function() {
++    return d3_geo_projection(d3_geo_azimuthalEqualArea);
++  }).raw = d3_geo_azimuthalEqualArea;
++  var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
++    var c = Math.acos(cosλcosφ);
++    return c && c / Math.sin(c);
++  }, d3_identity);
++  (d3.geo.azimuthalEquidistant = function() {
++    return d3_geo_projection(d3_geo_azimuthalEquidistant);
++  }).raw = d3_geo_azimuthalEquidistant;
++  function d3_geo_conicConformal(φ0, φ1) {
++    var cosφ0 = Math.cos(φ0), t = function(φ) {
++      return Math.tan(π / 4 + φ / 2);
++    }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
++    if (!n) return d3_geo_mercator;
++    function forward(λ, φ) {
++      if (F > 0) {
++        if (φ < -halfπ + ε) φ = -halfπ + ε;
++      } else {
++        if (φ > halfπ - ε) φ = halfπ - ε;
++      }
++      var ρ = F / Math.pow(t(φ), n);
++      return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
++    }
++    forward.invert = function(x, y) {
++      var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
++      return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
++    };
++    return forward;
+   }
+-  function d3_geo_spherical(cartesian) {
+-    return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
++  (d3.geo.conicConformal = function() {
++    return d3_geo_conic(d3_geo_conicConformal);
++  }).raw = d3_geo_conicConformal;
++  function d3_geo_conicEquidistant(φ0, φ1) {
++    var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
++    if (abs(n) < ε) return d3_geo_equirectangular;
++    function forward(λ, φ) {
++      var ρ = G - φ;
++      return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
++    }
++    forward.invert = function(x, y) {
++      var ρ0_y = G - y;
++      return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
++    };
++    return forward;
+   }
+-  function d3_geo_sphericalEqual(a, b) {
+-    return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
++  (d3.geo.conicEquidistant = function() {
++    return d3_geo_conic(d3_geo_conicEquidistant);
++  }).raw = d3_geo_conicEquidistant;
++  var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
++    return 1 / cosλcosφ;
++  }, Math.atan);
++  (d3.geo.gnomonic = function() {
++    return d3_geo_projection(d3_geo_gnomonic);
++  }).raw = d3_geo_gnomonic;
++  function d3_geo_mercator(λ, φ) {
++    return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
+   }
+-  d3.geo.bounds = function() {
+-    var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
+-    var bound = {
+-      point: point,
+-      lineStart: lineStart,
+-      lineEnd: lineEnd,
+-      polygonStart: function() {
+-        bound.point = ringPoint;
+-        bound.lineStart = ringStart;
+-        bound.lineEnd = ringEnd;
+-        dλSum = 0;
+-        d3_geo_area.polygonStart();
+-      },
+-      polygonEnd: function() {
+-        d3_geo_area.polygonEnd();
+-        bound.point = point;
+-        bound.lineStart = lineStart;
+-        bound.lineEnd = lineEnd;
+-        if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
+-        range[0] = λ0, range[1] = λ1;
+-      }
++  d3_geo_mercator.invert = function(x, y) {
++    return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
++  };
++  function d3_geo_mercatorProjection(project) {
++    var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
++    m.scale = function() {
++      var v = scale.apply(m, arguments);
++      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
+     };
+-    function point(λ, φ) {
+-      ranges.push(range = [ λ0 = λ, λ1 = λ ]);
+-      if (φ < φ0) φ0 = φ;
+-      if (φ > φ1) φ1 = φ;
+-    }
+-    function linePoint(λ, φ) {
+-      var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
+-      if (p0) {
+-        var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
+-        d3_geo_cartesianNormalize(inflection);
+-        inflection = d3_geo_spherical(inflection);
+-        var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
+-        if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
+-          var φi = inflection[1] * d3_degrees;
+-          if (φi > φ1) φ1 = φi;
+-        } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
+-          var φi = -inflection[1] * d3_degrees;
+-          if (φi < φ0) φ0 = φi;
+-        } else {
+-          if (φ < φ0) φ0 = φ;
+-          if (φ > φ1) φ1 = φ;
+-        }
+-        if (antimeridian) {
+-          if (λ < λ_) {
+-            if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
+-          } else {
+-            if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
+-          }
+-        } else {
+-          if (λ1 >= λ0) {
+-            if (λ < λ0) λ0 = λ;
+-            if (λ > λ1) λ1 = λ;
+-          } else {
+-            if (λ > λ_) {
+-              if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
+-            } else {
+-              if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
+-            }
+-          }
++    m.translate = function() {
++      var v = translate.apply(m, arguments);
++      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
++    };
++    m.clipExtent = function(_) {
++      var v = clipExtent.apply(m, arguments);
++      if (v === m) {
++        if (clipAuto = _ == null) {
++          var k = π * scale(), t = translate();
++          clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
+         }
+-      } else {
+-        point(λ, φ);
++      } else if (clipAuto) {
++        v = null;
+       }
+-      p0 = p, λ_ = λ;
+-    }
+-    function lineStart() {
+-      bound.point = linePoint;
+-    }
+-    function lineEnd() {
+-      range[0] = λ0, range[1] = λ1;
+-      bound.point = point;
+-      p0 = null;
+-    }
+-    function ringPoint(λ, φ) {
+-      if (p0) {
+-        var dλ = λ - λ_;
+-        dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
+-      } else λ__ = λ, φ__ = φ;
+-      d3_geo_area.point(λ, φ);
+-      linePoint(λ, φ);
+-    }
+-    function ringStart() {
+-      d3_geo_area.lineStart();
+-    }
+-    function ringEnd() {
+-      ringPoint(λ__, φ__);
+-      d3_geo_area.lineEnd();
+-      if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
+-      range[0] = λ0, range[1] = λ1;
+-      p0 = null;
++      return v;
++    };
++    return m.clipExtent(null);
++  }
++  (d3.geo.mercator = function() {
++    return d3_geo_mercatorProjection(d3_geo_mercator);
++  }).raw = d3_geo_mercator;
++  var d3_geo_orthographic = d3_geo_azimuthal(function() {
++    return 1;
++  }, Math.asin);
++  (d3.geo.orthographic = function() {
++    return d3_geo_projection(d3_geo_orthographic);
++  }).raw = d3_geo_orthographic;
++  var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
++    return 1 / (1 + cosλcosφ);
++  }, function(ρ) {
++    return 2 * Math.atan(ρ);
++  });
++  (d3.geo.stereographic = function() {
++    return d3_geo_projection(d3_geo_stereographic);
++  }).raw = d3_geo_stereographic;
++  function d3_geo_transverseMercator(λ, φ) {
++    return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
++  }
++  d3_geo_transverseMercator.invert = function(x, y) {
++    return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
++  };
++  (d3.geo.transverseMercator = function() {
++    var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
++    projection.center = function(_) {
++      return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
++    };
++    projection.rotate = function(_) {
++      return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(), 
++      [ _[0], _[1], _[2] - 90 ]);
++    };
++    return rotate([ 0, 0, 90 ]);
++  }).raw = d3_geo_transverseMercator;
++  d3.geom = {};
++  function d3_geom_pointX(d) {
++    return d[0];
++  }
++  function d3_geom_pointY(d) {
++    return d[1];
++  }
++  d3.geom.hull = function(vertices) {
++    var x = d3_geom_pointX, y = d3_geom_pointY;
++    if (arguments.length) return hull(vertices);
++    function hull(data) {
++      if (data.length < 3) return [];
++      var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
++      for (i = 0; i < n; i++) {
++        points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
++      }
++      points.sort(d3_geom_hullOrder);
++      for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
++      var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
++      var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
++      for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
++      for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
++      return polygon;
+     }
+-    function angle(λ0, λ1) {
+-      return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
++    hull.x = function(_) {
++      return arguments.length ? (x = _, hull) : x;
++    };
++    hull.y = function(_) {
++      return arguments.length ? (y = _, hull) : y;
++    };
++    return hull;
++  };
++  function d3_geom_hullUpper(points) {
++    var n = points.length, hull = [ 0, 1 ], hs = 2;
++    for (var i = 2; i < n; i++) {
++      while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
++      hull[hs++] = i;
+     }
+-    function compareRanges(a, b) {
+-      return a[0] - b[0];
++    return hull.slice(0, hs);
++  }
++  function d3_geom_hullOrder(a, b) {
++    return a[0] - b[0] || a[1] - b[1];
++  }
++  d3.geom.polygon = function(coordinates) {
++    d3_subclass(coordinates, d3_geom_polygonPrototype);
++    return coordinates;
++  };
++  var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
++  d3_geom_polygonPrototype.area = function() {
++    var i = -1, n = this.length, a, b = this[n - 1], area = 0;
++    while (++i < n) {
++      a = b;
++      b = this[i];
++      area += a[1] * b[0] - a[0] * b[1];
+     }
+-    function withinRange(x, range) {
+-      return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
++    return area * .5;
++  };
++  d3_geom_polygonPrototype.centroid = function(k) {
++    var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
++    if (!arguments.length) k = -1 / (6 * this.area());
++    while (++i < n) {
++      a = b;
++      b = this[i];
++      c = a[0] * b[1] - b[0] * a[1];
++      x += (a[0] + b[0]) * c;
++      y += (a[1] + b[1]) * c;
+     }
+-    return function(feature) {
+-      φ1 = λ1 = -(λ0 = φ0 = Infinity);
+-      ranges = [];
+-      d3.geo.stream(feature, bound);
+-      var n = ranges.length;
+-      if (n) {
+-        ranges.sort(compareRanges);
+-        for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
+-          b = ranges[i];
+-          if (withinRange(b[0], a) || withinRange(b[1], a)) {
+-            if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
+-            if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
+-          } else {
+-            merged.push(a = b);
++    return [ x * k, y * k ];
++  };
++  d3_geom_polygonPrototype.clip = function(subject) {
++    var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
++    while (++i < n) {
++      input = subject.slice();
++      subject.length = 0;
++      b = this[i];
++      c = input[(m = input.length - closed) - 1];
++      j = -1;
++      while (++j < m) {
++        d = input[j];
++        if (d3_geom_polygonInside(d, a, b)) {
++          if (!d3_geom_polygonInside(c, a, b)) {
++            subject.push(d3_geom_polygonIntersect(c, d, a, b));
+           }
++          subject.push(d);
++        } else if (d3_geom_polygonInside(c, a, b)) {
++          subject.push(d3_geom_polygonIntersect(c, d, a, b));
+         }
+-        var best = -Infinity, dλ;
+-        for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
+-          b = merged[i];
+-          if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
+-        }
++        c = d;
+       }
+-      ranges = range = null;
+-      return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
+-    };
+-  }();
+-  d3.geo.centroid = function(object) {
+-    d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
+-    d3.geo.stream(object, d3_geo_centroid);
+-    var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
+-    if (m < ε2) {
+-      x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
+-      if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
+-      m = x * x + y * y + z * z;
+-      if (m < ε2) return [ NaN, NaN ];
+-    }
+-    return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
+-  };
+-  var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
+-  var d3_geo_centroid = {
+-    sphere: d3_noop,
+-    point: d3_geo_centroidPoint,
+-    lineStart: d3_geo_centroidLineStart,
+-    lineEnd: d3_geo_centroidLineEnd,
+-    polygonStart: function() {
+-      d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
+-    },
+-    polygonEnd: function() {
+-      d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
++      if (closed) subject.push(subject[0]);
++      a = b;
+     }
++    return subject;
+   };
+-  function d3_geo_centroidPoint(λ, φ) {
+-    λ *= d3_radians;
+-    var cosφ = Math.cos(φ *= d3_radians);
+-    d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
+-  }
+-  function d3_geo_centroidPointXYZ(x, y, z) {
+-    ++d3_geo_centroidW0;
+-    d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
+-    d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
+-    d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
++  function d3_geom_polygonInside(p, a, b) {
++    return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
+   }
+-  function d3_geo_centroidLineStart() {
+-    var x0, y0, z0;
+-    d3_geo_centroid.point = function(λ, φ) {
+-      λ *= d3_radians;
+-      var cosφ = Math.cos(φ *= d3_radians);
+-      x0 = cosφ * Math.cos(λ);
+-      y0 = cosφ * Math.sin(λ);
+-      z0 = Math.sin(φ);
+-      d3_geo_centroid.point = nextPoint;
+-      d3_geo_centroidPointXYZ(x0, y0, z0);
+-    };
+-    function nextPoint(λ, φ) {
+-      λ *= d3_radians;
+-      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
+-      d3_geo_centroidW1 += w;
+-      d3_geo_centroidX1 += w * (x0 + (x0 = x));
+-      d3_geo_centroidY1 += w * (y0 + (y0 = y));
+-      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
+-      d3_geo_centroidPointXYZ(x0, y0, z0);
+-    }
++  function d3_geom_polygonIntersect(c, d, a, b) {
++    var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
++    return [ x1 + ua * x21, y1 + ua * y21 ];
+   }
+-  function d3_geo_centroidLineEnd() {
+-    d3_geo_centroid.point = d3_geo_centroidPoint;
++  function d3_geom_polygonClosed(coordinates) {
++    var a = coordinates[0], b = coordinates[coordinates.length - 1];
++    return !(a[0] - b[0] || a[1] - b[1]);
+   }
+-  function d3_geo_centroidRingStart() {
+-    var λ00, φ00, x0, y0, z0;
+-    d3_geo_centroid.point = function(λ, φ) {
+-      λ00 = λ, φ00 = φ;
+-      d3_geo_centroid.point = nextPoint;
+-      λ *= d3_radians;
+-      var cosφ = Math.cos(φ *= d3_radians);
+-      x0 = cosφ * Math.cos(λ);
+-      y0 = cosφ * Math.sin(λ);
+-      z0 = Math.sin(φ);
+-      d3_geo_centroidPointXYZ(x0, y0, z0);
+-    };
+-    d3_geo_centroid.lineEnd = function() {
+-      nextPoint(λ00, φ00);
+-      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
+-      d3_geo_centroid.point = d3_geo_centroidPoint;
+-    };
+-    function nextPoint(λ, φ) {
+-      λ *= d3_radians;
+-      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
+-      d3_geo_centroidX2 += v * cx;
+-      d3_geo_centroidY2 += v * cy;
+-      d3_geo_centroidZ2 += v * cz;
+-      d3_geo_centroidW1 += w;
+-      d3_geo_centroidX1 += w * (x0 + (x0 = x));
+-      d3_geo_centroidY1 += w * (y0 + (y0 = y));
+-      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
+-      d3_geo_centroidPointXYZ(x0, y0, z0);
+-    }
++  var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
++  function d3_geom_voronoiBeach() {
++    d3_geom_voronoiRedBlackNode(this);
++    this.edge = this.site = this.circle = null;
+   }
+-  function d3_geo_compose(a, b) {
+-    function compose(x, y) {
+-      return x = a(x, y), b(x[0], x[1]);
+-    }
+-    if (a.invert && b.invert) compose.invert = function(x, y) {
+-      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
+-    };
+-    return compose;
++  function d3_geom_voronoiCreateBeach(site) {
++    var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
++    beach.site = site;
++    return beach;
+   }
+-  function d3_true() {
+-    return true;
++  function d3_geom_voronoiDetachBeach(beach) {
++    d3_geom_voronoiDetachCircle(beach);
++    d3_geom_voronoiBeaches.remove(beach);
++    d3_geom_voronoiBeachPool.push(beach);
++    d3_geom_voronoiRedBlackNode(beach);
+   }
+-  function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
+-    var subject = [], clip = [];
+-    segments.forEach(function(segment) {
+-      if ((n = segment.length - 1) <= 0) return;
+-      var n, p0 = segment[0], p1 = segment[n];
+-      if (d3_geo_sphericalEqual(p0, p1)) {
+-        listener.lineStart();
+-        for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
+-        listener.lineEnd();
+-        return;
+-      }
+-      var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
+-      a.o = b;
+-      subject.push(a);
+-      clip.push(b);
+-      a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
+-      b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
+-      a.o = b;
+-      subject.push(a);
+-      clip.push(b);
+-    });
+-    clip.sort(compare);
+-    d3_geo_clipPolygonLinkCircular(subject);
+-    d3_geo_clipPolygonLinkCircular(clip);
+-    if (!subject.length) return;
+-    for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
+-      clip[i].e = entry = !entry;
++  function d3_geom_voronoiRemoveBeach(beach) {
++    var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
++      x: x,
++      y: y
++    }, previous = beach.P, next = beach.N, disappearing = [ beach ];
++    d3_geom_voronoiDetachBeach(beach);
++    var lArc = previous;
++    while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
++      previous = lArc.P;
++      disappearing.unshift(lArc);
++      d3_geom_voronoiDetachBeach(lArc);
++      lArc = previous;
+     }
+-    var start = subject[0], points, point;
+-    while (1) {
+-      var current = start, isSubject = true;
+-      while (current.v) if ((current = current.n) === start) return;
+-      points = current.z;
+-      listener.lineStart();
+-      do {
+-        current.v = current.o.v = true;
+-        if (current.e) {
+-          if (isSubject) {
+-            for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
+-          } else {
+-            interpolate(current.x, current.n.x, 1, listener);
++    disappearing.unshift(lArc);
++    d3_geom_voronoiDetachCircle(lArc);
++    var rArc = next;
++    while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
++      next = rArc.N;
++      disappearing.push(rArc);
++      d3_geom_voronoiDetachBeach(rArc);
++      rArc = next;
++    }
++    disappearing.push(rArc);
++    d3_geom_voronoiDetachCircle(rArc);
++    var nArcs = disappearing.length, iArc;
++    for (iArc = 1; iArc < nArcs; ++iArc) {
++      rArc = disappearing[iArc];
++      lArc = disappearing[iArc - 1];
++      d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
++    }
++    lArc = disappearing[0];
++    rArc = disappearing[nArcs - 1];
++    rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
++    d3_geom_voronoiAttachCircle(lArc);
++    d3_geom_voronoiAttachCircle(rArc);
++  }
++  function d3_geom_voronoiAddBeach(site) {
++    var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
++    while (node) {
++      dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
++      if (dxl > ε) node = node.L; else {
++        dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
++        if (dxr > ε) {
++          if (!node.R) {
++            lArc = node;
++            break;
+           }
+-          current = current.n;
++          node = node.R;
+         } else {
+-          if (isSubject) {
+-            points = current.p.z;
+-            for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
++          if (dxl > -ε) {
++            lArc = node.P;
++            rArc = node;
++          } else if (dxr > -ε) {
++            lArc = node;
++            rArc = node.N;
+           } else {
+-            interpolate(current.x, current.p.x, -1, listener);
++            lArc = rArc = node;
+           }
+-          current = current.p;
++          break;
+         }
+-        current = current.o;
+-        points = current.z;
+-        isSubject = !isSubject;
+-      } while (!current.v);
+-      listener.lineEnd();
++      }
+     }
+-  }
+-  function d3_geo_clipPolygonLinkCircular(array) {
+-    if (!(n = array.length)) return;
+-    var n, i = 0, a = array[0], b;
+-    while (++i < n) {
+-      a.n = b = array[i];
+-      b.p = a;
+-      a = b;
++    var newArc = d3_geom_voronoiCreateBeach(site);
++    d3_geom_voronoiBeaches.insert(lArc, newArc);
++    if (!lArc && !rArc) return;
++    if (lArc === rArc) {
++      d3_geom_voronoiDetachCircle(lArc);
++      rArc = d3_geom_voronoiCreateBeach(lArc.site);
++      d3_geom_voronoiBeaches.insert(newArc, rArc);
++      newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
++      d3_geom_voronoiAttachCircle(lArc);
++      d3_geom_voronoiAttachCircle(rArc);
++      return;
+     }
+-    a.n = b = array[0];
+-    b.p = a;
++    if (!rArc) {
++      newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
++      return;
++    }
++    d3_geom_voronoiDetachCircle(lArc);
++    d3_geom_voronoiDetachCircle(rArc);
++    var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
++      x: (cy * hb - by * hc) / d + ax,
++      y: (bx * hc - cx * hb) / d + ay
++    };
++    d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
++    newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
++    rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
++    d3_geom_voronoiAttachCircle(lArc);
++    d3_geom_voronoiAttachCircle(rArc);
+   }
+-  function d3_geo_clipPolygonIntersection(point, points, other, entry) {
+-    this.x = point;
+-    this.z = points;
+-    this.o = other;
+-    this.e = entry;
+-    this.v = false;
+-    this.n = this.p = null;
++  function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
++    var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
++    if (!pby2) return rfocx;
++    var lArc = arc.P;
++    if (!lArc) return -Infinity;
++    site = lArc.site;
++    var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
++    if (!plby2) return lfocx;
++    var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
++    if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
++    return (rfocx + lfocx) / 2;
+   }
+-  function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
+-    return function(rotate, listener) {
+-      var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
+-      var clip = {
+-        point: point,
+-        lineStart: lineStart,
+-        lineEnd: lineEnd,
+-        polygonStart: function() {
+-          clip.point = pointRing;
+-          clip.lineStart = ringStart;
+-          clip.lineEnd = ringEnd;
+-          segments = [];
+-          polygon = [];
+-        },
+-        polygonEnd: function() {
+-          clip.point = point;
+-          clip.lineStart = lineStart;
+-          clip.lineEnd = lineEnd;
+-          segments = d3.merge(segments);
+-          var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
+-          if (segments.length) {
+-            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
+-            d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
+-          } else if (clipStartInside) {
+-            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
+-            listener.lineStart();
+-            interpolate(null, null, 1, listener);
+-            listener.lineEnd();
+-          }
+-          if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
+-          segments = polygon = null;
+-        },
+-        sphere: function() {
+-          listener.polygonStart();
+-          listener.lineStart();
+-          interpolate(null, null, 1, listener);
+-          listener.lineEnd();
+-          listener.polygonEnd();
+-        }
+-      };
+-      function point(λ, φ) {
+-        var point = rotate(λ, φ);
+-        if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
+-      }
+-      function pointLine(λ, φ) {
+-        var point = rotate(λ, φ);
+-        line.point(point[0], point[1]);
+-      }
+-      function lineStart() {
+-        clip.point = pointLine;
+-        line.lineStart();
+-      }
+-      function lineEnd() {
+-        clip.point = point;
+-        line.lineEnd();
+-      }
+-      var segments;
+-      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
+-      function pointRing(λ, φ) {
+-        ring.push([ λ, φ ]);
+-        var point = rotate(λ, φ);
+-        ringListener.point(point[0], point[1]);
+-      }
+-      function ringStart() {
+-        ringListener.lineStart();
+-        ring = [];
+-      }
+-      function ringEnd() {
+-        pointRing(ring[0][0], ring[0][1]);
+-        ringListener.lineEnd();
+-        var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
+-        ring.pop();
+-        polygon.push(ring);
+-        ring = null;
+-        if (!n) return;
+-        if (clean & 1) {
+-          segment = ringSegments[0];
+-          var n = segment.length - 1, i = -1, point;
+-          if (n > 0) {
+-            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
+-            listener.lineStart();
+-            while (++i < n) listener.point((point = segment[i])[0], point[1]);
+-            listener.lineEnd();
+-          }
+-          return;
++  function d3_geom_voronoiRightBreakPoint(arc, directrix) {
++    var rArc = arc.N;
++    if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
++    var site = arc.site;
++    return site.y === directrix ? site.x : Infinity;
++  }
++  function d3_geom_voronoiCell(site) {
++    this.site = site;
++    this.edges = [];
++  }
++  d3_geom_voronoiCell.prototype.prepare = function() {
++    var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
++    while (iHalfEdge--) {
++      edge = halfEdges[iHalfEdge].edge;
++      if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
++    }
++    halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
++    return halfEdges.length;
++  };
++  function d3_geom_voronoiCloseCells(extent) {
++    var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
++    while (iCell--) {
++      cell = cells[iCell];
++      if (!cell || !cell.prepare()) continue;
++      halfEdges = cell.edges;
++      nHalfEdges = halfEdges.length;
++      iHalfEdge = 0;
++      while (iHalfEdge < nHalfEdges) {
++        end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
++        start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
++        if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
++          halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
++            x: x0,
++            y: abs(x2 - x0) < ε ? y2 : y1
++          } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
++            x: abs(y2 - y1) < ε ? x2 : x1,
++            y: y1
++          } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
++            x: x1,
++            y: abs(x2 - x1) < ε ? y2 : y0
++          } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
++            x: abs(y2 - y0) < ε ? x2 : x0,
++            y: y0
++          } : null), cell.site, null));
++          ++nHalfEdges;
+         }
+-        if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
+-        segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
+       }
+-      return clip;
+-    };
+-  }
+-  function d3_geo_clipSegmentLength1(segment) {
+-    return segment.length > 1;
++    }
+   }
+-  function d3_geo_clipBufferListener() {
+-    var lines = [], line;
+-    return {
+-      lineStart: function() {
+-        lines.push(line = []);
+-      },
+-      point: function(λ, φ) {
+-        line.push([ λ, φ ]);
+-      },
+-      lineEnd: d3_noop,
+-      buffer: function() {
+-        var buffer = lines;
+-        lines = [];
+-        line = null;
+-        return buffer;
+-      },
+-      rejoin: function() {
+-        if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
+-      }
+-    };
++  function d3_geom_voronoiHalfEdgeOrder(a, b) {
++    return b.angle - a.angle;
+   }
+-  function d3_geo_clipSort(a, b) {
+-    return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
++  function d3_geom_voronoiCircle() {
++    d3_geom_voronoiRedBlackNode(this);
++    this.x = this.y = this.arc = this.site = this.cy = null;
+   }
+-  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
+-  function d3_geo_clipAntimeridianLine(listener) {
+-    var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
+-    return {
+-      lineStart: function() {
+-        listener.lineStart();
+-        clean = 1;
+-      },
+-      point: function(λ1, φ1) {
+-        var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
+-        if (abs(dλ - π) < ε) {
+-          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
+-          listener.point(sλ0, φ0);
+-          listener.lineEnd();
+-          listener.lineStart();
+-          listener.point(sλ1, φ0);
+-          listener.point(λ1, φ0);
+-          clean = 0;
+-        } else if (sλ0 !== sλ1 && dλ >= π) {
+-          if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
+-          if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
+-          φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
+-          listener.point(sλ0, φ0);
+-          listener.lineEnd();
+-          listener.lineStart();
+-          listener.point(sλ1, φ0);
+-          clean = 0;
++  function d3_geom_voronoiAttachCircle(arc) {
++    var lArc = arc.P, rArc = arc.N;
++    if (!lArc || !rArc) return;
++    var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
++    if (lSite === rSite) return;
++    var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
++    var d = 2 * (ax * cy - ay * cx);
++    if (d >= -ε2) return;
++    var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
++    var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
++    circle.arc = arc;
++    circle.site = cSite;
++    circle.x = x + bx;
++    circle.y = cy + Math.sqrt(x * x + y * y);
++    circle.cy = cy;
++    arc.circle = circle;
++    var before = null, node = d3_geom_voronoiCircles._;
++    while (node) {
++      if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
++        if (node.L) node = node.L; else {
++          before = node.P;
++          break;
++        }
++      } else {
++        if (node.R) node = node.R; else {
++          before = node;
++          break;
+         }
+-        listener.point(λ0 = λ1, φ0 = φ1);
+-        sλ0 = sλ1;
+-      },
+-      lineEnd: function() {
+-        listener.lineEnd();
+-        λ0 = φ0 = NaN;
+-      },
+-      clean: function() {
+-        return 2 - clean;
+       }
+-    };
+-  }
+-  function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
+-    var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
+-    return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
++    }
++    d3_geom_voronoiCircles.insert(before, circle);
++    if (!before) d3_geom_voronoiFirstCircle = circle;
+   }
+-  function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
+-    var φ;
+-    if (from == null) {
+-      φ = direction * halfπ;
+-      listener.point(-π, φ);
+-      listener.point(0, φ);
+-      listener.point(π, φ);
+-      listener.point(π, 0);
+-      listener.point(π, -φ);
+-      listener.point(0, -φ);
+-      listener.point(-π, -φ);
+-      listener.point(-π, 0);
+-      listener.point(-π, φ);
+-    } else if (abs(from[0] - to[0]) > ε) {
+-      var s = from[0] < to[0] ? π : -π;
+-      φ = direction * s / 2;
+-      listener.point(-s, φ);
+-      listener.point(0, φ);
+-      listener.point(s, φ);
+-    } else {
+-      listener.point(to[0], to[1]);
++  function d3_geom_voronoiDetachCircle(arc) {
++    var circle = arc.circle;
++    if (circle) {
++      if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
++      d3_geom_voronoiCircles.remove(circle);
++      d3_geom_voronoiCirclePool.push(circle);
++      d3_geom_voronoiRedBlackNode(circle);
++      arc.circle = null;
+     }
+   }
+-  function d3_geo_pointInPolygon(point, polygon) {
+-    var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
+-    d3_geo_areaRingSum.reset();
+-    for (var i = 0, n = polygon.length; i < n; ++i) {
+-      var ring = polygon[i], m = ring.length;
+-      if (!m) continue;
+-      var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
+-      while (true) {
+-        if (j === m) j = 0;
+-        point = ring[j];
+-        var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
+-        d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
+-        polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
+-        if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
+-          var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
+-          d3_geo_cartesianNormalize(arc);
+-          var intersection = d3_geo_cartesianCross(meridianNormal, arc);
+-          d3_geo_cartesianNormalize(intersection);
+-          var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
+-          if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
+-            winding += antimeridian ^ dλ >= 0 ? 1 : -1;
+-          }
+-        }
+-        if (!j++) break;
+-        λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
++  function d3_geom_voronoiClipEdges(extent) {
++    var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
++    while (i--) {
++      e = edges[i];
++      if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
++        e.a = e.b = null;
++        edges.splice(i, 1);
+       }
+     }
+-    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
+   }
+-  function d3_geo_clipCircle(radius) {
+-    var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
+-    return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
+-    function visible(λ, φ) {
+-      return Math.cos(λ) * Math.cos(φ) > cr;
+-    }
+-    function clipLine(listener) {
+-      var point0, c0, v0, v00, clean;
+-      return {
+-        lineStart: function() {
+-          v00 = v0 = false;
+-          clean = 1;
+-        },
+-        point: function(λ, φ) {
+-          var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
+-          if (!point0 && (v00 = v0 = v)) listener.lineStart();
+-          if (v !== v0) {
+-            point2 = intersect(point0, point1);
+-            if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
+-              point1[0] += ε;
+-              point1[1] += ε;
+-              v = visible(point1[0], point1[1]);
+-            }
+-          }
+-          if (v !== v0) {
+-            clean = 0;
+-            if (v) {
+-              listener.lineStart();
+-              point2 = intersect(point1, point0);
+-              listener.point(point2[0], point2[1]);
+-            } else {
+-              point2 = intersect(point0, point1);
+-              listener.point(point2[0], point2[1]);
+-              listener.lineEnd();
+-            }
+-            point0 = point2;
+-          } else if (notHemisphere && point0 && smallRadius ^ v) {
+-            var t;
+-            if (!(c & c0) && (t = intersect(point1, point0, true))) {
+-              clean = 0;
+-              if (smallRadius) {
+-                listener.lineStart();
+-                listener.point(t[0][0], t[0][1]);
+-                listener.point(t[1][0], t[1][1]);
+-                listener.lineEnd();
+-              } else {
+-                listener.point(t[1][0], t[1][1]);
+-                listener.lineEnd();
+-                listener.lineStart();
+-                listener.point(t[0][0], t[0][1]);
+-              }
+-            }
+-          }
+-          if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
+-            listener.point(point1[0], point1[1]);
+-          }
+-          point0 = point1, v0 = v, c0 = c;
+-        },
+-        lineEnd: function() {
+-          if (v0) listener.lineEnd();
+-          point0 = null;
+-        },
+-        clean: function() {
+-          return clean | (v00 && v0) << 1;
++  function d3_geom_voronoiConnectEdge(edge, extent) {
++    var vb = edge.b;
++    if (vb) return true;
++    var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
++    if (ry === ly) {
++      if (fx < x0 || fx >= x1) return;
++      if (lx > rx) {
++        if (!va) va = {
++          x: fx,
++          y: y0
++        }; else if (va.y >= y1) return;
++        vb = {
++          x: fx,
++          y: y1
++        };
++      } else {
++        if (!va) va = {
++          x: fx,
++          y: y1
++        }; else if (va.y < y0) return;
++        vb = {
++          x: fx,
++          y: y0
++        };
++      }
++    } else {
++      fm = (lx - rx) / (ry - ly);
++      fb = fy - fm * fx;
++      if (fm < -1 || fm > 1) {
++        if (lx > rx) {
++          if (!va) va = {
++            x: (y0 - fb) / fm,
++            y: y0
++          }; else if (va.y >= y1) return;
++          vb = {
++            x: (y1 - fb) / fm,
++            y: y1
++          };
++        } else {
++          if (!va) va = {
++            x: (y1 - fb) / fm,
++            y: y1
++          }; else if (va.y < y0) return;
++          vb = {
++            x: (y0 - fb) / fm,
++            y: y0
++          };
++        }
++      } else {
++        if (ly < ry) {
++          if (!va) va = {
++            x: x0,
++            y: fm * x0 + fb
++          }; else if (va.x >= x1) return;
++          vb = {
++            x: x1,
++            y: fm * x1 + fb
++          };
++        } else {
++          if (!va) va = {
++            x: x1,
++            y: fm * x1 + fb
++          }; else if (va.x < x0) return;
++          vb = {
++            x: x0,
++            y: fm * x0 + fb
++          };
+         }
+-      };
+-    }
+-    function intersect(a, b, two) {
+-      var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
+-      var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
+-      if (!determinant) return !two && a;
+-      var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
+-      d3_geo_cartesianAdd(A, B);
+-      var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
+-      if (t2 < 0) return;
+-      var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
+-      d3_geo_cartesianAdd(q, A);
+-      q = d3_geo_spherical(q);
+-      if (!two) return q;
+-      var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
+-      if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
+-      var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
+-      if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
+-      if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
+-        var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
+-        d3_geo_cartesianAdd(q1, A);
+-        return [ q, d3_geo_spherical(q1) ];
+       }
+     }
+-    function code(λ, φ) {
+-      var r = smallRadius ? radius : π - radius, code = 0;
+-      if (λ < -r) code |= 1; else if (λ > r) code |= 2;
+-      if (φ < -r) code |= 4; else if (φ > r) code |= 8;
+-      return code;
++    edge.a = va;
++    edge.b = vb;
++    return true;
++  }
++  function d3_geom_voronoiEdge(lSite, rSite) {
++    this.l = lSite;
++    this.r = rSite;
++    this.a = this.b = null;
++  }
++  function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
++    var edge = new d3_geom_voronoiEdge(lSite, rSite);
++    d3_geom_voronoiEdges.push(edge);
++    if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
++    if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
++    d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
++    d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
++    return edge;
++  }
++  function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
++    var edge = new d3_geom_voronoiEdge(lSite, null);
++    edge.a = va;
++    edge.b = vb;
++    d3_geom_voronoiEdges.push(edge);
++    return edge;
++  }
++  function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
++    if (!edge.a && !edge.b) {
++      edge.a = vertex;
++      edge.l = lSite;
++      edge.r = rSite;
++    } else if (edge.l === rSite) {
++      edge.b = vertex;
++    } else {
++      edge.a = vertex;
+     }
+   }
+-  function d3_geom_clipLine(x0, y0, x1, y1) {
+-    return function(line) {
+-      var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
+-      r = x0 - ax;
+-      if (!dx && r > 0) return;
+-      r /= dx;
+-      if (dx < 0) {
+-        if (r < t0) return;
+-        if (r < t1) t1 = r;
+-      } else if (dx > 0) {
+-        if (r > t1) return;
+-        if (r > t0) t0 = r;
+-      }
+-      r = x1 - ax;
+-      if (!dx && r < 0) return;
+-      r /= dx;
+-      if (dx < 0) {
+-        if (r > t1) return;
+-        if (r > t0) t0 = r;
+-      } else if (dx > 0) {
+-        if (r < t0) return;
+-        if (r < t1) t1 = r;
+-      }
+-      r = y0 - ay;
+-      if (!dy && r > 0) return;
+-      r /= dy;
+-      if (dy < 0) {
+-        if (r < t0) return;
+-        if (r < t1) t1 = r;
+-      } else if (dy > 0) {
+-        if (r > t1) return;
+-        if (r > t0) t0 = r;
+-      }
+-      r = y1 - ay;
+-      if (!dy && r < 0) return;
+-      r /= dy;
+-      if (dy < 0) {
+-        if (r > t1) return;
+-        if (r > t0) t0 = r;
+-      } else if (dy > 0) {
+-        if (r < t0) return;
+-        if (r < t1) t1 = r;
+-      }
+-      if (t0 > 0) line.a = {
+-        x: ax + t0 * dx,
+-        y: ay + t0 * dy
+-      };
+-      if (t1 < 1) line.b = {
+-        x: ax + t1 * dx,
+-        y: ay + t1 * dy
+-      };
+-      return line;
+-    };
++  function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
++    var va = edge.a, vb = edge.b;
++    this.edge = edge;
++    this.site = lSite;
++    this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
+   }
+-  var d3_geo_clipExtentMAX = 1e9;
+-  d3.geo.clipExtent = function() {
+-    var x0, y0, x1, y1, stream, clip, clipExtent = {
+-      stream: function(output) {
+-        if (stream) stream.valid = false;
+-        stream = clip(output);
+-        stream.valid = true;
+-        return stream;
+-      },
+-      extent: function(_) {
+-        if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
+-        clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
+-        if (stream) stream.valid = false, stream = null;
+-        return clipExtent;
+-      }
+-    };
+-    return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
++  d3_geom_voronoiHalfEdge.prototype = {
++    start: function() {
++      return this.edge.l === this.site ? this.edge.a : this.edge.b;
++    },
++    end: function() {
++      return this.edge.l === this.site ? this.edge.b : this.edge.a;
++    }
+   };
+-  function d3_geo_clipExtent(x0, y0, x1, y1) {
+-    return function(listener) {
+-      var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
+-      var clip = {
+-        point: point,
+-        lineStart: lineStart,
+-        lineEnd: lineEnd,
+-        polygonStart: function() {
+-          listener = bufferListener;
+-          segments = [];
+-          polygon = [];
+-          clean = true;
+-        },
+-        polygonEnd: function() {
+-          listener = listener_;
+-          segments = d3.merge(segments);
+-          var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
+-          if (inside || visible) {
+-            listener.polygonStart();
+-            if (inside) {
+-              listener.lineStart();
+-              interpolate(null, null, 1, listener);
+-              listener.lineEnd();
+-            }
+-            if (visible) {
+-              d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
++  function d3_geom_voronoiRedBlackTree() {
++    this._ = null;
++  }
++  function d3_geom_voronoiRedBlackNode(node) {
++    node.U = node.C = node.L = node.R = node.P = node.N = null;
++  }
++  d3_geom_voronoiRedBlackTree.prototype = {
++    insert: function(after, node) {
++      var parent, grandpa, uncle;
++      if (after) {
++        node.P = after;
++        node.N = after.N;
++        if (after.N) after.N.P = node;
++        after.N = node;
++        if (after.R) {
++          after = after.R;
++          while (after.L) after = after.L;
++          after.L = node;
++        } else {
++          after.R = node;
++        }
++        parent = after;
++      } else if (this._) {
++        after = d3_geom_voronoiRedBlackFirst(this._);
++        node.P = null;
++        node.N = after;
++        after.P = after.L = node;
++        parent = after;
++      } else {
++        node.P = node.N = null;
++        this._ = node;
++        parent = null;
++      }
++      node.L = node.R = null;
++      node.U = parent;
++      node.C = true;
++      after = node;
++      while (parent && parent.C) {
++        grandpa = parent.U;
++        if (parent === grandpa.L) {
++          uncle = grandpa.R;
++          if (uncle && uncle.C) {
++            parent.C = uncle.C = false;
++            grandpa.C = true;
++            after = grandpa;
++          } else {
++            if (after === parent.R) {
++              d3_geom_voronoiRedBlackRotateLeft(this, parent);
++              after = parent;
++              parent = after.U;
+             }
+-            listener.polygonEnd();
++            parent.C = false;
++            grandpa.C = true;
++            d3_geom_voronoiRedBlackRotateRight(this, grandpa);
+           }
+-          segments = polygon = ring = null;
+-        }
+-      };
+-      function insidePolygon(p) {
+-        var wn = 0, n = polygon.length, y = p[1];
+-        for (var i = 0; i < n; ++i) {
+-          for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
+-            b = v[j];
+-            if (a[1] <= y) {
+-              if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
+-            } else {
+-              if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
++        } else {
++          uncle = grandpa.L;
++          if (uncle && uncle.C) {
++            parent.C = uncle.C = false;
++            grandpa.C = true;
++            after = grandpa;
++          } else {
++            if (after === parent.L) {
++              d3_geom_voronoiRedBlackRotateRight(this, parent);
++              after = parent;
++              parent = after.U;
+             }
+-            a = b;
++            parent.C = false;
++            grandpa.C = true;
++            d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
+           }
+         }
+-        return wn !== 0;
++        parent = after.U;
+       }
+-      function interpolate(from, to, direction, listener) {
+-        var a = 0, a1 = 0;
+-        if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
+-          do {
+-            listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
+-          } while ((a = (a + direction + 4) % 4) !== a1);
++      this._.C = false;
++    },
++    remove: function(node) {
++      if (node.N) node.N.P = node.P;
++      if (node.P) node.P.N = node.N;
++      node.N = node.P = null;
++      var parent = node.U, sibling, left = node.L, right = node.R, next, red;
++      if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
++      if (parent) {
++        if (parent.L === node) parent.L = next; else parent.R = next;
++      } else {
++        this._ = next;
++      }
++      if (left && right) {
++        red = next.C;
++        next.C = node.C;
++        next.L = left;
++        left.U = next;
++        if (next !== right) {
++          parent = next.U;
++          next.U = node.U;
++          node = next.R;
++          parent.L = node;
++          next.R = right;
++          right.U = next;
+         } else {
+-          listener.point(to[0], to[1]);
++          next.U = parent;
++          parent = next;
++          node = next.R;
+         }
++      } else {
++        red = node.C;
++        node = next;
+       }
+-      function pointVisible(x, y) {
+-        return x0 <= x && x <= x1 && y0 <= y && y <= y1;
+-      }
+-      function point(x, y) {
+-        if (pointVisible(x, y)) listener.point(x, y);
+-      }
+-      var x__, y__, v__, x_, y_, v_, first, clean;
+-      function lineStart() {
+-        clip.point = linePoint;
+-        if (polygon) polygon.push(ring = []);
+-        first = true;
+-        v_ = false;
+-        x_ = y_ = NaN;
+-      }
+-      function lineEnd() {
+-        if (segments) {
+-          linePoint(x__, y__);
+-          if (v__ && v_) bufferListener.rejoin();
+-          segments.push(bufferListener.buffer());
+-        }
+-        clip.point = point;
+-        if (v_) listener.lineEnd();
++      if (node) node.U = parent;
++      if (red) return;
++      if (node && node.C) {
++        node.C = false;
++        return;
+       }
+-      function linePoint(x, y) {
+-        x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
+-        y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
+-        var v = pointVisible(x, y);
+-        if (polygon) ring.push([ x, y ]);
+-        if (first) {
+-          x__ = x, y__ = y, v__ = v;
+-          first = false;
+-          if (v) {
+-            listener.lineStart();
+-            listener.point(x, y);
++      do {
++        if (node === this._) break;
++        if (node === parent.L) {
++          sibling = parent.R;
++          if (sibling.C) {
++            sibling.C = false;
++            parent.C = true;
++            d3_geom_voronoiRedBlackRotateLeft(this, parent);
++            sibling = parent.R;
++          }
++          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
++            if (!sibling.R || !sibling.R.C) {
++              sibling.L.C = false;
++              sibling.C = true;
++              d3_geom_voronoiRedBlackRotateRight(this, sibling);
++              sibling = parent.R;
++            }
++            sibling.C = parent.C;
++            parent.C = sibling.R.C = false;
++            d3_geom_voronoiRedBlackRotateLeft(this, parent);
++            node = this._;
++            break;
+           }
+         } else {
+-          if (v && v_) listener.point(x, y); else {
+-            var l = {
+-              a: {
+-                x: x_,
+-                y: y_
+-              },
+-              b: {
+-                x: x,
+-                y: y
+-              }
+-            };
+-            if (clipLine(l)) {
+-              if (!v_) {
+-                listener.lineStart();
+-                listener.point(l.a.x, l.a.y);
+-              }
+-              listener.point(l.b.x, l.b.y);
+-              if (!v) listener.lineEnd();
+-              clean = false;
+-            } else if (v) {
+-              listener.lineStart();
+-              listener.point(x, y);
+-              clean = false;
++          sibling = parent.L;
++          if (sibling.C) {
++            sibling.C = false;
++            parent.C = true;
++            d3_geom_voronoiRedBlackRotateRight(this, parent);
++            sibling = parent.L;
++          }
++          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
++            if (!sibling.L || !sibling.L.C) {
++              sibling.R.C = false;
++              sibling.C = true;
++              d3_geom_voronoiRedBlackRotateLeft(this, sibling);
++              sibling = parent.L;
+             }
++            sibling.C = parent.C;
++            parent.C = sibling.L.C = false;
++            d3_geom_voronoiRedBlackRotateRight(this, parent);
++            node = this._;
++            break;
+           }
+         }
+-        x_ = x, y_ = y, v_ = v;
+-      }
+-      return clip;
+-    };
+-    function corner(p, direction) {
+-      return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
++        sibling.C = true;
++        node = parent;
++        parent = parent.U;
++      } while (!node.C);
++      if (node) node.C = false;
+     }
+-    function compare(a, b) {
+-      return comparePoints(a.x, b.x);
++  };
++  function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
++    var p = node, q = node.R, parent = p.U;
++    if (parent) {
++      if (parent.L === p) parent.L = q; else parent.R = q;
++    } else {
++      tree._ = q;
+     }
+-    function comparePoints(a, b) {
+-      var ca = corner(a, 1), cb = corner(b, 1);
+-      return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
++    q.U = parent;
++    p.U = q;
++    p.R = q.L;
++    if (p.R) p.R.U = p;
++    q.L = p;
++  }
++  function d3_geom_voronoiRedBlackRotateRight(tree, node) {
++    var p = node, q = node.L, parent = p.U;
++    if (parent) {
++      if (parent.L === p) parent.L = q; else parent.R = q;
++    } else {
++      tree._ = q;
+     }
++    q.U = parent;
++    p.U = q;
++    p.L = q.R;
++    if (p.L) p.L.U = p;
++    q.R = p;
+   }
+-  function d3_geo_conic(projectAt) {
+-    var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
+-    p.parallels = function(_) {
+-      if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
+-      return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
+-    };
+-    return p;
++  function d3_geom_voronoiRedBlackFirst(node) {
++    while (node.L) node = node.L;
++    return node;
+   }
+-  function d3_geo_conicEqualArea(φ0, φ1) {
+-    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
+-    function forward(λ, φ) {
+-      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
+-      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
++  function d3_geom_voronoi(sites, bbox) {
++    var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
++    d3_geom_voronoiEdges = [];
++    d3_geom_voronoiCells = new Array(sites.length);
++    d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
++    d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
++    while (true) {
++      circle = d3_geom_voronoiFirstCircle;
++      if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
++        if (site.x !== x0 || site.y !== y0) {
++          d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
++          d3_geom_voronoiAddBeach(site);
++          x0 = site.x, y0 = site.y;
++        }
++        site = sites.pop();
++      } else if (circle) {
++        d3_geom_voronoiRemoveBeach(circle.arc);
++      } else {
++        break;
++      }
+     }
+-    forward.invert = function(x, y) {
+-      var ρ0_y = ρ0 - y;
+-      return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
++    if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
++    var diagram = {
++      cells: d3_geom_voronoiCells,
++      edges: d3_geom_voronoiEdges
+     };
+-    return forward;
++    d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
++    return diagram;
+   }
+-  (d3.geo.conicEqualArea = function() {
+-    return d3_geo_conic(d3_geo_conicEqualArea);
+-  }).raw = d3_geo_conicEqualArea;
+-  d3.geo.albers = function() {
+-    return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
+-  };
+-  d3.geo.albersUsa = function() {
+-    var lower48 = d3.geo.albers();
+-    var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
+-    var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
+-    var point, pointStream = {
+-      point: function(x, y) {
+-        point = [ x, y ];
+-      }
+-    }, lower48Point, alaskaPoint, hawaiiPoint;
+-    function albersUsa(coordinates) {
+-      var x = coordinates[0], y = coordinates[1];
+-      point = null;
+-      (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
+-      return point;
++  function d3_geom_voronoiVertexOrder(a, b) {
++    return b.y - a.y || b.x - a.x;
++  }
++  d3.geom.voronoi = function(points) {
++    var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
++    if (points) return voronoi(points);
++    function voronoi(data) {
++      var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
++      d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
++        var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
++          var s = e.start();
++          return [ s.x, s.y ];
++        }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
++        polygon.point = data[i];
++      });
++      return polygons;
+     }
+-    albersUsa.invert = function(coordinates) {
+-      var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
+-      return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
++    function sites(data) {
++      return data.map(function(d, i) {
++        return {
++          x: Math.round(fx(d, i) / ε) * ε,
++          y: Math.round(fy(d, i) / ε) * ε,
++          i: i
++        };
++      });
++    }
++    voronoi.links = function(data) {
++      return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
++        return edge.l && edge.r;
++      }).map(function(edge) {
++        return {
++          source: data[edge.l.i],
++          target: data[edge.r.i]
++        };
++      });
+     };
+-    albersUsa.stream = function(stream) {
+-      var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
+-      return {
+-        point: function(x, y) {
+-          lower48Stream.point(x, y);
+-          alaskaStream.point(x, y);
+-          hawaiiStream.point(x, y);
+-        },
+-        sphere: function() {
+-          lower48Stream.sphere();
+-          alaskaStream.sphere();
+-          hawaiiStream.sphere();
+-        },
+-        lineStart: function() {
+-          lower48Stream.lineStart();
+-          alaskaStream.lineStart();
+-          hawaiiStream.lineStart();
+-        },
+-        lineEnd: function() {
+-          lower48Stream.lineEnd();
+-          alaskaStream.lineEnd();
+-          hawaiiStream.lineEnd();
+-        },
+-        polygonStart: function() {
+-          lower48Stream.polygonStart();
+-          alaskaStream.polygonStart();
+-          hawaiiStream.polygonStart();
+-        },
+-        polygonEnd: function() {
+-          lower48Stream.polygonEnd();
+-          alaskaStream.polygonEnd();
+-          hawaiiStream.polygonEnd();
++    voronoi.triangles = function(data) {
++      var triangles = [];
++      d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
++        var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
++        while (++j < m) {
++          e0 = e1;
++          s0 = s1;
++          e1 = edges[j].edge;
++          s1 = e1.l === site ? e1.r : e1.l;
++          if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
++            triangles.push([ data[i], data[s0.i], data[s1.i] ]);
++          }
+         }
+-      };
+-    };
+-    albersUsa.precision = function(_) {
+-      if (!arguments.length) return lower48.precision();
+-      lower48.precision(_);
+-      alaska.precision(_);
+-      hawaii.precision(_);
+-      return albersUsa;
++      });
++      return triangles;
+     };
+-    albersUsa.scale = function(_) {
+-      if (!arguments.length) return lower48.scale();
+-      lower48.scale(_);
+-      alaska.scale(_ * .35);
+-      hawaii.scale(_);
+-      return albersUsa.translate(lower48.translate());
++    voronoi.x = function(_) {
++      return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
+     };
+-    albersUsa.translate = function(_) {
+-      if (!arguments.length) return lower48.translate();
+-      var k = lower48.scale(), x = +_[0], y = +_[1];
+-      lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
+-      alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
+-      hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
+-      return albersUsa;
++    voronoi.y = function(_) {
++      return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
+     };
+-    return albersUsa.scale(1070);
+-  };
+-  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
+-    point: d3_noop,
+-    lineStart: d3_noop,
+-    lineEnd: d3_noop,
+-    polygonStart: function() {
+-      d3_geo_pathAreaPolygon = 0;
+-      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
+-    },
+-    polygonEnd: function() {
+-      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
+-      d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
+-    }
+-  };
+-  function d3_geo_pathAreaRingStart() {
+-    var x00, y00, x0, y0;
+-    d3_geo_pathArea.point = function(x, y) {
+-      d3_geo_pathArea.point = nextPoint;
+-      x00 = x0 = x, y00 = y0 = y;
++    voronoi.clipExtent = function(_) {
++      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
++      clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
++      return voronoi;
+     };
+-    function nextPoint(x, y) {
+-      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
+-      x0 = x, y0 = y;
+-    }
+-    d3_geo_pathArea.lineEnd = function() {
+-      nextPoint(x00, y00);
++    voronoi.size = function(_) {
++      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
++      return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
+     };
+-  }
+-  var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
+-  var d3_geo_pathBounds = {
+-    point: d3_geo_pathBoundsPoint,
+-    lineStart: d3_noop,
+-    lineEnd: d3_noop,
+-    polygonStart: d3_noop,
+-    polygonEnd: d3_noop
++    return voronoi;
+   };
+-  function d3_geo_pathBoundsPoint(x, y) {
+-    if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
+-    if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
+-    if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
+-    if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
++  var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
++  function d3_geom_voronoiTriangleArea(a, b, c) {
++    return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
+   }
+-  function d3_geo_pathBuffer() {
+-    var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
+-    var stream = {
+-      point: point,
+-      lineStart: function() {
+-        stream.point = pointLineStart;
+-      },
+-      lineEnd: lineEnd,
+-      polygonStart: function() {
+-        stream.lineEnd = lineEndPolygon;
+-      },
+-      polygonEnd: function() {
+-        stream.lineEnd = lineEnd;
+-        stream.point = point;
+-      },
+-      pointRadius: function(_) {
+-        pointCircle = d3_geo_pathBufferCircle(_);
+-        return stream;
+-      },
+-      result: function() {
+-        if (buffer.length) {
+-          var result = buffer.join("");
+-          buffer = [];
+-          return result;
++  d3.geom.delaunay = function(vertices) {
++    return d3.geom.voronoi().triangles(vertices);
++  };
++  d3.geom.quadtree = function(points, x1, y1, x2, y2) {
++    var x = d3_geom_pointX, y = d3_geom_pointY, compat;
++    if (compat = arguments.length) {
++      x = d3_geom_quadtreeCompatX;
++      y = d3_geom_quadtreeCompatY;
++      if (compat === 3) {
++        y2 = y1;
++        x2 = x1;
++        y1 = x1 = 0;
++      }
++      return quadtree(points);
++    }
++    function quadtree(data) {
++      var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
++      if (x1 != null) {
++        x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
++      } else {
++        x2_ = y2_ = -(x1_ = y1_ = Infinity);
++        xs = [], ys = [];
++        n = data.length;
++        if (compat) for (i = 0; i < n; ++i) {
++          d = data[i];
++          if (d.x < x1_) x1_ = d.x;
++          if (d.y < y1_) y1_ = d.y;
++          if (d.x > x2_) x2_ = d.x;
++          if (d.y > y2_) y2_ = d.y;
++          xs.push(d.x);
++          ys.push(d.y);
++        } else for (i = 0; i < n; ++i) {
++          var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
++          if (x_ < x1_) x1_ = x_;
++          if (y_ < y1_) y1_ = y_;
++          if (x_ > x2_) x2_ = x_;
++          if (y_ > y2_) y2_ = y_;
++          xs.push(x_);
++          ys.push(y_);
+         }
+       }
+-    };
+-    function point(x, y) {
+-      buffer.push("M", x, ",", y, pointCircle);
+-    }
+-    function pointLineStart(x, y) {
+-      buffer.push("M", x, ",", y);
+-      stream.point = pointLine;
+-    }
+-    function pointLine(x, y) {
+-      buffer.push("L", x, ",", y);
+-    }
+-    function lineEnd() {
+-      stream.point = point;
+-    }
+-    function lineEndPolygon() {
+-      buffer.push("Z");
+-    }
+-    return stream;
+-  }
+-  function d3_geo_pathBufferCircle(radius) {
+-    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
+-  }
+-  var d3_geo_pathCentroid = {
+-    point: d3_geo_pathCentroidPoint,
+-    lineStart: d3_geo_pathCentroidLineStart,
+-    lineEnd: d3_geo_pathCentroidLineEnd,
+-    polygonStart: function() {
+-      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
+-    },
+-    polygonEnd: function() {
+-      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
+-      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
+-      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
++      var dx = x2_ - x1_, dy = y2_ - y1_;
++      if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
++      function insert(n, d, x, y, x1, y1, x2, y2) {
++        if (isNaN(x) || isNaN(y)) return;
++        if (n.leaf) {
++          var nx = n.x, ny = n.y;
++          if (nx != null) {
++            if (abs(nx - x) + abs(ny - y) < .01) {
++              insertChild(n, d, x, y, x1, y1, x2, y2);
++            } else {
++              var nPoint = n.point;
++              n.x = n.y = n.point = null;
++              insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
++              insertChild(n, d, x, y, x1, y1, x2, y2);
++            }
++          } else {
++            n.x = x, n.y = y, n.point = d;
++          }
++        } else {
++          insertChild(n, d, x, y, x1, y1, x2, y2);
++        }
++      }
++      function insertChild(n, d, x, y, x1, y1, x2, y2) {
++        var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
++        n.leaf = false;
++        n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
++        if (right) x1 = xm; else x2 = xm;
++        if (below) y1 = ym; else y2 = ym;
++        insert(n, d, x, y, x1, y1, x2, y2);
++      }
++      var root = d3_geom_quadtreeNode();
++      root.add = function(d) {
++        insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
++      };
++      root.visit = function(f) {
++        d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
++      };
++      root.find = function(point) {
++        return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
++      };
++      i = -1;
++      if (x1 == null) {
++        while (++i < n) {
++          insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
++        }
++        --i;
++      } else data.forEach(root.add);
++      xs = ys = data = d = null;
++      return root;
+     }
+-  };
+-  function d3_geo_pathCentroidPoint(x, y) {
+-    d3_geo_centroidX0 += x;
+-    d3_geo_centroidY0 += y;
+-    ++d3_geo_centroidZ0;
+-  }
+-  function d3_geo_pathCentroidLineStart() {
+-    var x0, y0;
+-    d3_geo_pathCentroid.point = function(x, y) {
+-      d3_geo_pathCentroid.point = nextPoint;
+-      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
++    quadtree.x = function(_) {
++      return arguments.length ? (x = _, quadtree) : x;
+     };
+-    function nextPoint(x, y) {
+-      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
+-      d3_geo_centroidX1 += z * (x0 + x) / 2;
+-      d3_geo_centroidY1 += z * (y0 + y) / 2;
+-      d3_geo_centroidZ1 += z;
+-      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
+-    }
+-  }
+-  function d3_geo_pathCentroidLineEnd() {
+-    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
+-  }
+-  function d3_geo_pathCentroidRingStart() {
+-    var x00, y00, x0, y0;
+-    d3_geo_pathCentroid.point = function(x, y) {
+-      d3_geo_pathCentroid.point = nextPoint;
+-      d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
++    quadtree.y = function(_) {
++      return arguments.length ? (y = _, quadtree) : y;
+     };
+-    function nextPoint(x, y) {
+-      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
+-      d3_geo_centroidX1 += z * (x0 + x) / 2;
+-      d3_geo_centroidY1 += z * (y0 + y) / 2;
+-      d3_geo_centroidZ1 += z;
+-      z = y0 * x - x0 * y;
+-      d3_geo_centroidX2 += z * (x0 + x);
+-      d3_geo_centroidY2 += z * (y0 + y);
+-      d3_geo_centroidZ2 += z * 3;
+-      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
+-    }
+-    d3_geo_pathCentroid.lineEnd = function() {
+-      nextPoint(x00, y00);
++    quadtree.extent = function(_) {
++      if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
++      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0], 
++      y2 = +_[1][1];
++      return quadtree;
++    };
++    quadtree.size = function(_) {
++      if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
++      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
++      return quadtree;
+     };
++    return quadtree;
++  };
++  function d3_geom_quadtreeCompatX(d) {
++    return d.x;
+   }
+-  function d3_geo_pathContext(context) {
+-    var pointRadius = 4.5;
+-    var stream = {
+-      point: point,
+-      lineStart: function() {
+-        stream.point = pointLineStart;
+-      },
+-      lineEnd: lineEnd,
+-      polygonStart: function() {
+-        stream.lineEnd = lineEndPolygon;
+-      },
+-      polygonEnd: function() {
+-        stream.lineEnd = lineEnd;
+-        stream.point = point;
+-      },
+-      pointRadius: function(_) {
+-        pointRadius = _;
+-        return stream;
+-      },
+-      result: d3_noop
++  function d3_geom_quadtreeCompatY(d) {
++    return d.y;
++  }
++  function d3_geom_quadtreeNode() {
++    return {
++      leaf: true,
++      nodes: [],
++      point: null,
++      x: null,
++      y: null
+     };
+-    function point(x, y) {
+-      context.moveTo(x + pointRadius, y);
+-      context.arc(x, y, pointRadius, 0, τ);
+-    }
+-    function pointLineStart(x, y) {
+-      context.moveTo(x, y);
+-      stream.point = pointLine;
+-    }
+-    function pointLine(x, y) {
+-      context.lineTo(x, y);
+-    }
+-    function lineEnd() {
+-      stream.point = point;
+-    }
+-    function lineEndPolygon() {
+-      context.closePath();
+-    }
+-    return stream;
+   }
+-  function d3_geo_resample(project) {
+-    var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
+-    function resample(stream) {
+-      return (maxDepth ? resampleRecursive : resampleNone)(stream);
+-    }
+-    function resampleNone(stream) {
+-      return d3_geo_transformPoint(stream, function(x, y) {
+-        x = project(x, y);
+-        stream.point(x[0], x[1]);
+-      });
++  function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
++    if (!f(node, x1, y1, x2, y2)) {
++      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
++      if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
++      if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
++      if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
++      if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
+     }
+-    function resampleRecursive(stream) {
+-      var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
+-      var resample = {
+-        point: point,
+-        lineStart: lineStart,
+-        lineEnd: lineEnd,
+-        polygonStart: function() {
+-          stream.polygonStart();
+-          resample.lineStart = ringStart;
+-        },
+-        polygonEnd: function() {
+-          stream.polygonEnd();
+-          resample.lineStart = lineStart;
++  }
++  function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
++    var minDistance2 = Infinity, closestPoint;
++    (function find(node, x1, y1, x2, y2) {
++      if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
++      if (point = node.point) {
++        var point, dx = x - node.x, dy = y - node.y, distance2 = dx * dx + dy * dy;
++        if (distance2 < minDistance2) {
++          var distance = Math.sqrt(minDistance2 = distance2);
++          x0 = x - distance, y0 = y - distance;
++          x3 = x + distance, y3 = y + distance;
++          closestPoint = point;
+         }
+-      };
+-      function point(x, y) {
+-        x = project(x, y);
+-        stream.point(x[0], x[1]);
+-      }
+-      function lineStart() {
+-        x0 = NaN;
+-        resample.point = linePoint;
+-        stream.lineStart();
+-      }
+-      function linePoint(λ, φ) {
+-        var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
+-        resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
+-        stream.point(x0, y0);
+-      }
+-      function lineEnd() {
+-        resample.point = point;
+-        stream.lineEnd();
+       }
+-      function ringStart() {
+-        lineStart();
+-        resample.point = ringPoint;
+-        resample.lineEnd = ringEnd;
+-      }
+-      function ringPoint(λ, φ) {
+-        linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
+-        resample.point = linePoint;
++      var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
++      for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
++        if (node = children[i & 3]) switch (i & 3) {
++         case 0:
++          find(node, x1, y1, xm, ym);
++          break;
++
++         case 1:
++          find(node, xm, y1, x2, ym);
++          break;
++
++         case 2:
++          find(node, x1, ym, xm, y2);
++          break;
++
++         case 3:
++          find(node, xm, ym, x2, y2);
++          break;
++        }
+       }
+-      function ringEnd() {
+-        resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
+-        resample.lineEnd = lineEnd;
+-        lineEnd();
++    })(root, x0, y0, x3, y3);
++    return closestPoint;
++  }
++  d3.interpolateRgb = d3_interpolateRgb;
++  function d3_interpolateRgb(a, b) {
++    a = d3.rgb(a);
++    b = d3.rgb(b);
++    var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
++    return function(t) {
++      return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
++    };
++  }
++  d3.interpolateObject = d3_interpolateObject;
++  function d3_interpolateObject(a, b) {
++    var i = {}, c = {}, k;
++    for (k in a) {
++      if (k in b) {
++        i[k] = d3_interpolate(a[k], b[k]);
++      } else {
++        c[k] = a[k];
+       }
+-      return resample;
+     }
+-    function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
+-      var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
+-      if (d2 > 4 * δ2 && depth--) {
+-        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
+-        if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
+-          resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
+-          stream.point(x2, y2);
+-          resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
+-        }
++    for (k in b) {
++      if (!(k in a)) {
++        c[k] = b[k];
+       }
+     }
+-    resample.precision = function(_) {
+-      if (!arguments.length) return Math.sqrt(δ2);
+-      maxDepth = (δ2 = _ * _) > 0 && 16;
+-      return resample;
++    return function(t) {
++      for (k in i) c[k] = i[k](t);
++      return c;
+     };
+-    return resample;
+   }
+-  d3.geo.path = function() {
+-    var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
+-    function path(object) {
+-      if (object) {
+-        if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
+-        if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
+-        d3.geo.stream(object, cacheStream);
++  d3.interpolateNumber = d3_interpolateNumber;
++  function d3_interpolateNumber(a, b) {
++    a = +a, b = +b;
++    return function(t) {
++      return a * (1 - t) + b * t;
++    };
++  }
++  d3.interpolateString = d3_interpolateString;
++  function d3_interpolateString(a, b) {
++    var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
++    a = a + "", b = b + "";
++    while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
++      if ((bs = bm.index) > bi) {
++        bs = b.slice(bi, bs);
++        if (s[i]) s[i] += bs; else s[++i] = bs;
+       }
+-      return contextStream.result();
++      if ((am = am[0]) === (bm = bm[0])) {
++        if (s[i]) s[i] += bm; else s[++i] = bm;
++      } else {
++        s[++i] = null;
++        q.push({
++          i: i,
++          x: d3_interpolateNumber(am, bm)
++        });
++      }
++      bi = d3_interpolate_numberB.lastIndex;
+     }
+-    path.area = function(object) {
+-      d3_geo_pathAreaSum = 0;
+-      d3.geo.stream(object, projectStream(d3_geo_pathArea));
+-      return d3_geo_pathAreaSum;
+-    };
+-    path.centroid = function(object) {
+-      d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
+-      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
+-      return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
+-    };
+-    path.bounds = function(object) {
+-      d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
+-      d3.geo.stream(object, projectStream(d3_geo_pathBounds));
+-      return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
+-    };
+-    path.projection = function(_) {
+-      if (!arguments.length) return projection;
+-      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
+-      return reset();
+-    };
+-    path.context = function(_) {
+-      if (!arguments.length) return context;
+-      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
+-      if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
+-      return reset();
+-    };
+-    path.pointRadius = function(_) {
+-      if (!arguments.length) return pointRadius;
+-      pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
+-      return path;
+-    };
+-    function reset() {
+-      cacheStream = null;
+-      return path;
++    if (bi < b.length) {
++      bs = b.slice(bi);
++      if (s[i]) s[i] += bs; else s[++i] = bs;
+     }
+-    return path.projection(d3.geo.albersUsa()).context(null);
+-  };
+-  function d3_geo_pathProjectStream(project) {
+-    var resample = d3_geo_resample(function(x, y) {
+-      return project([ x * d3_degrees, y * d3_degrees ]);
++    return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
++      return b(t) + "";
++    }) : function() {
++      return b;
++    } : (b = q.length, function(t) {
++      for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
++      return s.join("");
+     });
+-    return function(stream) {
+-      return d3_geo_projectionRadians(resample(stream));
+-    };
+   }
+-  d3.geo.transform = function(methods) {
+-    return {
+-      stream: function(stream) {
+-        var transform = new d3_geo_transform(stream);
+-        for (var k in methods) transform[k] = methods[k];
+-        return transform;
+-      }
++  var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
++  d3.interpolate = d3_interpolate;
++  function d3_interpolate(a, b) {
++    var i = d3.interpolators.length, f;
++    while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
++    return f;
++  }
++  d3.interpolators = [ function(a, b) {
++    var t = typeof b;
++    return (t === "string" ? d3_rgb_names.has(b.toLowerCase()) || /^(#|rgb\(|hsl\()/i.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
++  } ];
++  d3.interpolateArray = d3_interpolateArray;
++  function d3_interpolateArray(a, b) {
++    var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
++    for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
++    for (;i < na; ++i) c[i] = a[i];
++    for (;i < nb; ++i) c[i] = b[i];
++    return function(t) {
++      for (i = 0; i < n0; ++i) c[i] = x[i](t);
++      return c;
+     };
+-  };
+-  function d3_geo_transform(stream) {
+-    this.stream = stream;
+   }
+-  d3_geo_transform.prototype = {
+-    point: function(x, y) {
+-      this.stream.point(x, y);
++  var d3_ease_default = function() {
++    return d3_identity;
++  };
++  var d3_ease = d3.map({
++    linear: d3_ease_default,
++    poly: d3_ease_poly,
++    quad: function() {
++      return d3_ease_quad;
+     },
+-    sphere: function() {
+-      this.stream.sphere();
++    cubic: function() {
++      return d3_ease_cubic;
+     },
+-    lineStart: function() {
+-      this.stream.lineStart();
++    sin: function() {
++      return d3_ease_sin;
+     },
+-    lineEnd: function() {
+-      this.stream.lineEnd();
++    exp: function() {
++      return d3_ease_exp;
+     },
+-    polygonStart: function() {
+-      this.stream.polygonStart();
++    circle: function() {
++      return d3_ease_circle;
+     },
+-    polygonEnd: function() {
+-      this.stream.polygonEnd();
+-    }
+-  };
+-  function d3_geo_transformPoint(stream, point) {
+-    return {
+-      point: point,
+-      sphere: function() {
+-        stream.sphere();
+-      },
+-      lineStart: function() {
+-        stream.lineStart();
+-      },
+-      lineEnd: function() {
+-        stream.lineEnd();
+-      },
+-      polygonStart: function() {
+-        stream.polygonStart();
+-      },
+-      polygonEnd: function() {
+-        stream.polygonEnd();
+-      }
+-    };
+-  }
+-  d3.geo.projection = d3_geo_projection;
+-  d3.geo.projectionMutator = d3_geo_projectionMutator;
+-  function d3_geo_projection(project) {
+-    return d3_geo_projectionMutator(function() {
+-      return project;
+-    })();
+-  }
+-  function d3_geo_projectionMutator(projectAt) {
+-    var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
+-      x = project(x, y);
+-      return [ x[0] * k + δx, δy - x[1] * k ];
+-    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
+-    function projection(point) {
+-      point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
+-      return [ point[0] * k + δx, δy - point[1] * k ];
++    elastic: d3_ease_elastic,
++    back: d3_ease_back,
++    bounce: function() {
++      return d3_ease_bounce;
+     }
+-    function invert(point) {
+-      point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
+-      return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
++  });
++  var d3_ease_mode = d3.map({
++    "in": d3_identity,
++    out: d3_ease_reverse,
++    "in-out": d3_ease_reflect,
++    "out-in": function(f) {
++      return d3_ease_reflect(d3_ease_reverse(f));
+     }
+-    projection.stream = function(output) {
+-      if (stream) stream.valid = false;
+-      stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
+-      stream.valid = true;
+-      return stream;
++  });
++  d3.ease = function(name) {
++    var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
++    t = d3_ease.get(t) || d3_ease_default;
++    m = d3_ease_mode.get(m) || d3_identity;
++    return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
++  };
++  function d3_ease_clamp(f) {
++    return function(t) {
++      return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
+     };
+-    projection.clipAngle = function(_) {
+-      if (!arguments.length) return clipAngle;
+-      preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
+-      return invalidate();
++  }
++  function d3_ease_reverse(f) {
++    return function(t) {
++      return 1 - f(1 - t);
+     };
+-    projection.clipExtent = function(_) {
+-      if (!arguments.length) return clipExtent;
+-      clipExtent = _;
+-      postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
+-      return invalidate();
++  }
++  function d3_ease_reflect(f) {
++    return function(t) {
++      return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
+     };
+-    projection.scale = function(_) {
+-      if (!arguments.length) return k;
+-      k = +_;
+-      return reset();
++  }
++  function d3_ease_quad(t) {
++    return t * t;
++  }
++  function d3_ease_cubic(t) {
++    return t * t * t;
++  }
++  function d3_ease_cubicInOut(t) {
++    if (t <= 0) return 0;
++    if (t >= 1) return 1;
++    var t2 = t * t, t3 = t2 * t;
++    return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
++  }
++  function d3_ease_poly(e) {
++    return function(t) {
++      return Math.pow(t, e);
+     };
+-    projection.translate = function(_) {
+-      if (!arguments.length) return [ x, y ];
+-      x = +_[0];
+-      y = +_[1];
+-      return reset();
++  }
++  function d3_ease_sin(t) {
++    return 1 - Math.cos(t * halfπ);
++  }
++  function d3_ease_exp(t) {
++    return Math.pow(2, 10 * (t - 1));
++  }
++  function d3_ease_circle(t) {
++    return 1 - Math.sqrt(1 - t * t);
++  }
++  function d3_ease_elastic(a, p) {
++    var s;
++    if (arguments.length < 2) p = .45;
++    if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
++    return function(t) {
++      return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
+     };
+-    projection.center = function(_) {
+-      if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
+-      λ = _[0] % 360 * d3_radians;
+-      φ = _[1] % 360 * d3_radians;
+-      return reset();
++  }
++  function d3_ease_back(s) {
++    if (!s) s = 1.70158;
++    return function(t) {
++      return t * t * ((s + 1) * t - s);
+     };
+-    projection.rotate = function(_) {
+-      if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
+-      δλ = _[0] % 360 * d3_radians;
+-      δφ = _[1] % 360 * d3_radians;
+-      δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
+-      return reset();
++  }
++  function d3_ease_bounce(t) {
++    return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
++  }
++  d3.interpolateHcl = d3_interpolateHcl;
++  function d3_interpolateHcl(a, b) {
++    a = d3.hcl(a);
++    b = d3.hcl(b);
++    var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
++    if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
++    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
++    return function(t) {
++      return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
+     };
+-    d3.rebind(projection, projectResample, "precision");
+-    function reset() {
+-      projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
+-      var center = project(λ, φ);
+-      δx = x - center[0] * k;
+-      δy = y + center[1] * k;
+-      return invalidate();
+-    }
+-    function invalidate() {
+-      if (stream) stream.valid = false, stream = null;
+-      return projection;
+-    }
+-    return function() {
+-      project = projectAt.apply(this, arguments);
+-      projection.invert = project.invert && invert;
+-      return reset();
++  }
++  d3.interpolateHsl = d3_interpolateHsl;
++  function d3_interpolateHsl(a, b) {
++    a = d3.hsl(a);
++    b = d3.hsl(b);
++    var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
++    if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
++    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
++    return function(t) {
++      return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
+     };
+   }
+-  function d3_geo_projectionRadians(stream) {
+-    return d3_geo_transformPoint(stream, function(x, y) {
+-      stream.point(x * d3_radians, y * d3_radians);
+-    });
++  d3.interpolateLab = d3_interpolateLab;
++  function d3_interpolateLab(a, b) {
++    a = d3.lab(a);
++    b = d3.lab(b);
++    var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
++    return function(t) {
++      return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
++    };
+   }
+-  function d3_geo_equirectangular(λ, φ) {
+-    return [ λ, φ ];
++  d3.interpolateRound = d3_interpolateRound;
++  function d3_interpolateRound(a, b) {
++    b -= a;
++    return function(t) {
++      return Math.round(a + b * t);
++    };
+   }
+-  (d3.geo.equirectangular = function() {
+-    return d3_geo_projection(d3_geo_equirectangular);
+-  }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
+-  d3.geo.rotation = function(rotate) {
+-    rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
+-    function forward(coordinates) {
+-      coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
+-      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
++  d3.transform = function(string) {
++    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
++    return (d3.transform = function(string) {
++      if (string != null) {
++        g.setAttribute("transform", string);
++        var t = g.transform.baseVal.consolidate();
++      }
++      return new d3_transform(t ? t.matrix : d3_transformIdentity);
++    })(string);
++  };
++  function d3_transform(m) {
++    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
++    if (r0[0] * r1[1] < r1[0] * r0[1]) {
++      r0[0] *= -1;
++      r0[1] *= -1;
++      kx *= -1;
++      kz *= -1;
+     }
+-    forward.invert = function(coordinates) {
+-      coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
+-      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
+-    };
+-    return forward;
++    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
++    this.translate = [ m.e, m.f ];
++    this.scale = [ kx, ky ];
++    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
++  }
++  d3_transform.prototype.toString = function() {
++    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
+   };
+-  function d3_geo_identityRotation(λ, φ) {
+-    return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
++  function d3_transformDot(a, b) {
++    return a[0] * b[0] + a[1] * b[1];
+   }
+-  d3_geo_identityRotation.invert = d3_geo_equirectangular;
+-  function d3_geo_rotation(δλ, δφ, δγ) {
+-    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
++  function d3_transformNormalize(a) {
++    var k = Math.sqrt(d3_transformDot(a, a));
++    if (k) {
++      a[0] /= k;
++      a[1] /= k;
++    }
++    return k;
+   }
+-  function d3_geo_forwardRotationλ(δλ) {
+-    return function(λ, φ) {
+-      return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
+-    };
++  function d3_transformCombine(a, b, k) {
++    a[0] += k * b[0];
++    a[1] += k * b[1];
++    return a;
+   }
+-  function d3_geo_rotationλ(δλ) {
+-    var rotation = d3_geo_forwardRotationλ(δλ);
+-    rotation.invert = d3_geo_forwardRotationλ(-δλ);
+-    return rotation;
++  var d3_transformIdentity = {
++    a: 1,
++    b: 0,
++    c: 0,
++    d: 1,
++    e: 0,
++    f: 0
++  };
++  d3.interpolateTransform = d3_interpolateTransform;
++  function d3_interpolateTransformPop(s) {
++    return s.length ? s.pop() + "," : "";
+   }
+-  function d3_geo_rotationφγ(δφ, δγ) {
+-    var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
+-    function rotation(λ, φ) {
+-      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
+-      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
++  function d3_interpolateTranslate(ta, tb, s, q) {
++    if (ta[0] !== tb[0] || ta[1] !== tb[1]) {
++      var i = s.push("translate(", null, ",", null, ")");
++      q.push({
++        i: i - 4,
++        x: d3_interpolateNumber(ta[0], tb[0])
++      }, {
++        i: i - 2,
++        x: d3_interpolateNumber(ta[1], tb[1])
++      });
++    } else if (tb[0] || tb[1]) {
++      s.push("translate(" + tb + ")");
+     }
+-    rotation.invert = function(λ, φ) {
+-      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
+-      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
+-    };
+-    return rotation;
+   }
+-  d3.geo.circle = function() {
+-    var origin = [ 0, 0 ], angle, precision = 6, interpolate;
+-    function circle() {
+-      var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
+-      interpolate(null, null, 1, {
+-        point: function(x, y) {
+-          ring.push(x = rotate(x, y));
+-          x[0] *= d3_degrees, x[1] *= d3_degrees;
+-        }
++  function d3_interpolateRotate(ra, rb, s, q) {
++    if (ra !== rb) {
++      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
++      q.push({
++        i: s.push(d3_interpolateTransformPop(s) + "rotate(", null, ")") - 2,
++        x: d3_interpolateNumber(ra, rb)
+       });
+-      return {
+-        type: "Polygon",
+-        coordinates: [ ring ]
+-      };
++    } else if (rb) {
++      s.push(d3_interpolateTransformPop(s) + "rotate(" + rb + ")");
+     }
+-    circle.origin = function(x) {
+-      if (!arguments.length) return origin;
+-      origin = x;
+-      return circle;
+-    };
+-    circle.angle = function(x) {
+-      if (!arguments.length) return angle;
+-      interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
+-      return circle;
+-    };
+-    circle.precision = function(_) {
+-      if (!arguments.length) return precision;
+-      interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
+-      return circle;
++  }
++  function d3_interpolateSkew(wa, wb, s, q) {
++    if (wa !== wb) {
++      q.push({
++        i: s.push(d3_interpolateTransformPop(s) + "skewX(", null, ")") - 2,
++        x: d3_interpolateNumber(wa, wb)
++      });
++    } else if (wb) {
++      s.push(d3_interpolateTransformPop(s) + "skewX(" + wb + ")");
++    }
++  }
++  function d3_interpolateScale(ka, kb, s, q) {
++    if (ka[0] !== kb[0] || ka[1] !== kb[1]) {
++      var i = s.push(d3_interpolateTransformPop(s) + "scale(", null, ",", null, ")");
++      q.push({
++        i: i - 4,
++        x: d3_interpolateNumber(ka[0], kb[0])
++      }, {
++        i: i - 2,
++        x: d3_interpolateNumber(ka[1], kb[1])
++      });
++    } else if (kb[0] !== 1 || kb[1] !== 1) {
++      s.push(d3_interpolateTransformPop(s) + "scale(" + kb + ")");
++    }
++  }
++  function d3_interpolateTransform(a, b) {
++    var s = [], q = [];
++    a = d3.transform(a), b = d3.transform(b);
++    d3_interpolateTranslate(a.translate, b.translate, s, q);
++    d3_interpolateRotate(a.rotate, b.rotate, s, q);
++    d3_interpolateSkew(a.skew, b.skew, s, q);
++    d3_interpolateScale(a.scale, b.scale, s, q);
++    a = b = null;
++    return function(t) {
++      var i = -1, n = q.length, o;
++      while (++i < n) s[(o = q[i]).i] = o.x(t);
++      return s.join("");
+     };
+-    return circle.angle(90);
+-  };
+-  function d3_geo_circleInterpolate(radius, precision) {
+-    var cr = Math.cos(radius), sr = Math.sin(radius);
+-    return function(from, to, direction, listener) {
+-      var step = direction * precision;
+-      if (from != null) {
+-        from = d3_geo_circleAngle(cr, from);
+-        to = d3_geo_circleAngle(cr, to);
+-        if (direction > 0 ? from < to : from > to) from += direction * τ;
+-      } else {
+-        from = radius + direction * τ;
+-        to = radius - .5 * step;
+-      }
+-      for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
+-        listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
+-      }
++  }
++  function d3_uninterpolateNumber(a, b) {
++    b = (b -= a = +a) || 1 / b;
++    return function(x) {
++      return (x - a) / b;
+     };
+   }
+-  function d3_geo_circleAngle(cr, point) {
+-    var a = d3_geo_cartesian(point);
+-    a[0] -= cr;
+-    d3_geo_cartesianNormalize(a);
+-    var angle = d3_acos(-a[1]);
+-    return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
++  function d3_uninterpolateClamp(a, b) {
++    b = (b -= a = +a) || 1 / b;
++    return function(x) {
++      return Math.max(0, Math.min(1, (x - a) / b));
++    };
+   }
+-  d3.geo.distance = function(a, b) {
+-    var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
+-    return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
++  d3.layout = {};
++  d3.layout.bundle = function() {
++    return function(links) {
++      var paths = [], i = -1, n = links.length;
++      while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
++      return paths;
++    };
+   };
+-  d3.geo.graticule = function() {
+-    var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
+-    function graticule() {
+-      return {
+-        type: "MultiLineString",
+-        coordinates: lines()
+-      };
++  function d3_layout_bundlePath(link) {
++    var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
++    while (start !== lca) {
++      start = start.parent;
++      points.push(start);
+     }
+-    function lines() {
+-      return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
+-        return abs(x % DX) > ε;
+-      }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
+-        return abs(y % DY) > ε;
+-      }).map(y));
++    var k = points.length;
++    while (end !== lca) {
++      points.splice(k, 0, end);
++      end = end.parent;
+     }
+-    graticule.lines = function() {
+-      return lines().map(function(coordinates) {
+-        return {
+-          type: "LineString",
+-          coordinates: coordinates
++    return points;
++  }
++  function d3_layout_bundleAncestors(node) {
++    var ancestors = [], parent = node.parent;
++    while (parent != null) {
++      ancestors.push(node);
++      node = parent;
++      parent = parent.parent;
++    }
++    ancestors.push(node);
++    return ancestors;
++  }
++  function d3_layout_bundleLeastCommonAncestor(a, b) {
++    if (a === b) return a;
++    var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
++    while (aNode === bNode) {
++      sharedNode = aNode;
++      aNode = aNodes.pop();
++      bNode = bNodes.pop();
++    }
++    return sharedNode;
++  }
++  d3.layout.chord = function() {
++    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
++    function relayout() {
++      var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
++      chords = [];
++      groups = [];
++      k = 0, i = -1;
++      while (++i < n) {
++        x = 0, j = -1;
++        while (++j < n) {
++          x += matrix[i][j];
++        }
++        groupSums.push(x);
++        subgroupIndex.push(d3.range(n));
++        k += x;
++      }
++      if (sortGroups) {
++        groupIndex.sort(function(a, b) {
++          return sortGroups(groupSums[a], groupSums[b]);
++        });
++      }
++      if (sortSubgroups) {
++        subgroupIndex.forEach(function(d, i) {
++          d.sort(function(a, b) {
++            return sortSubgroups(matrix[i][a], matrix[i][b]);
++          });
++        });
++      }
++      k = (τ - padding * n) / k;
++      x = 0, i = -1;
++      while (++i < n) {
++        x0 = x, j = -1;
++        while (++j < n) {
++          var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
++          subgroups[di + "-" + dj] = {
++            index: di,
++            subindex: dj,
++            startAngle: a0,
++            endAngle: a1,
++            value: v
++          };
++        }
++        groups[di] = {
++          index: di,
++          startAngle: x0,
++          endAngle: x,
++          value: groupSums[di]
+         };
++        x += padding;
++      }
++      i = -1;
++      while (++i < n) {
++        j = i - 1;
++        while (++j < n) {
++          var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
++          if (source.value || target.value) {
++            chords.push(source.value < target.value ? {
++              source: target,
++              target: source
++            } : {
++              source: source,
++              target: target
++            });
++          }
++        }
++      }
++      if (sortChords) resort();
++    }
++    function resort() {
++      chords.sort(function(a, b) {
++        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
+       });
++    }
++    chord.matrix = function(x) {
++      if (!arguments.length) return matrix;
++      n = (matrix = x) && matrix.length;
++      chords = groups = null;
++      return chord;
+     };
+-    graticule.outline = function() {
+-      return {
+-        type: "Polygon",
+-        coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
+-      };
+-    };
+-    graticule.extent = function(_) {
+-      if (!arguments.length) return graticule.minorExtent();
+-      return graticule.majorExtent(_).minorExtent(_);
+-    };
+-    graticule.majorExtent = function(_) {
+-      if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
+-      X0 = +_[0][0], X1 = +_[1][0];
+-      Y0 = +_[0][1], Y1 = +_[1][1];
+-      if (X0 > X1) _ = X0, X0 = X1, X1 = _;
+-      if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
+-      return graticule.precision(precision);
+-    };
+-    graticule.minorExtent = function(_) {
+-      if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
+-      x0 = +_[0][0], x1 = +_[1][0];
+-      y0 = +_[0][1], y1 = +_[1][1];
+-      if (x0 > x1) _ = x0, x0 = x1, x1 = _;
+-      if (y0 > y1) _ = y0, y0 = y1, y1 = _;
+-      return graticule.precision(precision);
+-    };
+-    graticule.step = function(_) {
+-      if (!arguments.length) return graticule.minorStep();
+-      return graticule.majorStep(_).minorStep(_);
++    chord.padding = function(x) {
++      if (!arguments.length) return padding;
++      padding = x;
++      chords = groups = null;
++      return chord;
+     };
+-    graticule.majorStep = function(_) {
+-      if (!arguments.length) return [ DX, DY ];
+-      DX = +_[0], DY = +_[1];
+-      return graticule;
++    chord.sortGroups = function(x) {
++      if (!arguments.length) return sortGroups;
++      sortGroups = x;
++      chords = groups = null;
++      return chord;
+     };
+-    graticule.minorStep = function(_) {
+-      if (!arguments.length) return [ dx, dy ];
+-      dx = +_[0], dy = +_[1];
+-      return graticule;
++    chord.sortSubgroups = function(x) {
++      if (!arguments.length) return sortSubgroups;
++      sortSubgroups = x;
++      chords = null;
++      return chord;
+     };
+-    graticule.precision = function(_) {
+-      if (!arguments.length) return precision;
+-      precision = +_;
+-      x = d3_geo_graticuleX(y0, y1, 90);
+-      y = d3_geo_graticuleY(x0, x1, precision);
+-      X = d3_geo_graticuleX(Y0, Y1, 90);
+-      Y = d3_geo_graticuleY(X0, X1, precision);
+-      return graticule;
++    chord.sortChords = function(x) {
++      if (!arguments.length) return sortChords;
++      sortChords = x;
++      if (chords) resort();
++      return chord;
+     };
+-    return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
+-  };
+-  function d3_geo_graticuleX(y0, y1, dy) {
+-    var y = d3.range(y0, y1 - ε, dy).concat(y1);
+-    return function(x) {
+-      return y.map(function(y) {
+-        return [ x, y ];
+-      });
++    chord.chords = function() {
++      if (!chords) relayout();
++      return chords;
+     };
+-  }
+-  function d3_geo_graticuleY(x0, x1, dx) {
+-    var x = d3.range(x0, x1 - ε, dx).concat(x1);
+-    return function(y) {
+-      return x.map(function(x) {
+-        return [ x, y ];
+-      });
++    chord.groups = function() {
++      if (!groups) relayout();
++      return groups;
+     };
+-  }
+-  function d3_source(d) {
+-    return d.source;
+-  }
+-  function d3_target(d) {
+-    return d.target;
+-  }
+-  d3.geo.greatArc = function() {
+-    var source = d3_source, source_, target = d3_target, target_;
+-    function greatArc() {
+-      return {
+-        type: "LineString",
+-        coordinates: [ source_ || source.apply(this, arguments), target_ || target.apply(this, arguments) ]
++    return chord;
++  };
++  d3.layout.force = function() {
++    var force = {}, event = d3.dispatch("start", "tick", "end"), timer, size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
++    function repulse(node) {
++      return function(quad, x1, _, x2) {
++        if (quad.point !== node) {
++          var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
++          if (dw * dw / theta2 < dn) {
++            if (dn < chargeDistance2) {
++              var k = quad.charge / dn;
++              node.px -= dx * k;
++              node.py -= dy * k;
++            }
++            return true;
++          }
++          if (quad.point && dn && dn < chargeDistance2) {
++            var k = quad.pointCharge / dn;
++            node.px -= dx * k;
++            node.py -= dy * k;
++          }
++        }
++        return !quad.charge;
+       };
+     }
+-    greatArc.distance = function() {
+-      return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
+-    };
+-    greatArc.source = function(_) {
+-      if (!arguments.length) return source;
+-      source = _, source_ = typeof _ === "function" ? null : _;
+-      return greatArc;
++    force.tick = function() {
++      if ((alpha *= .99) < .005) {
++        timer = null;
++        event.end({
++          type: "end",
++          alpha: alpha = 0
++        });
++        return true;
++      }
++      var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
++      for (i = 0; i < m; ++i) {
++        o = links[i];
++        s = o.source;
++        t = o.target;
++        x = t.x - s.x;
++        y = t.y - s.y;
++        if (l = x * x + y * y) {
++          l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
++          x *= l;
++          y *= l;
++          t.x -= x * (k = s.weight + t.weight ? s.weight / (s.weight + t.weight) : .5);
++          t.y -= y * k;
++          s.x += x * (k = 1 - k);
++          s.y += y * k;
++        }
++      }
++      if (k = alpha * gravity) {
++        x = size[0] / 2;
++        y = size[1] / 2;
++        i = -1;
++        if (k) while (++i < n) {
++          o = nodes[i];
++          o.x += (x - o.x) * k;
++          o.y += (y - o.y) * k;
++        }
++      }
++      if (charge) {
++        d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
++        i = -1;
++        while (++i < n) {
++          if (!(o = nodes[i]).fixed) {
++            q.visit(repulse(o));
++          }
++        }
++      }
++      i = -1;
++      while (++i < n) {
++        o = nodes[i];
++        if (o.fixed) {
++          o.x = o.px;
++          o.y = o.py;
++        } else {
++          o.x -= (o.px - (o.px = o.x)) * friction;
++          o.y -= (o.py - (o.py = o.y)) * friction;
++        }
++      }
++      event.tick({
++        type: "tick",
++        alpha: alpha
++      });
+     };
+-    greatArc.target = function(_) {
+-      if (!arguments.length) return target;
+-      target = _, target_ = typeof _ === "function" ? null : _;
+-      return greatArc;
++    force.nodes = function(x) {
++      if (!arguments.length) return nodes;
++      nodes = x;
++      return force;
+     };
+-    greatArc.precision = function() {
+-      return arguments.length ? greatArc : 0;
++    force.links = function(x) {
++      if (!arguments.length) return links;
++      links = x;
++      return force;
+     };
+-    return greatArc;
+-  };
+-  d3.geo.interpolate = function(source, target) {
+-    return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
+-  };
+-  function d3_geo_interpolate(x0, y0, x1, y1) {
+-    var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
+-    var interpolate = d ? function(t) {
+-      var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
+-      return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
+-    } : function() {
+-      return [ x0 * d3_degrees, y0 * d3_degrees ];
++    force.size = function(x) {
++      if (!arguments.length) return size;
++      size = x;
++      return force;
+     };
+-    interpolate.distance = d;
+-    return interpolate;
+-  }
+-  d3.geo.length = function(object) {
+-    d3_geo_lengthSum = 0;
+-    d3.geo.stream(object, d3_geo_length);
+-    return d3_geo_lengthSum;
+-  };
+-  var d3_geo_lengthSum;
+-  var d3_geo_length = {
+-    sphere: d3_noop,
+-    point: d3_noop,
+-    lineStart: d3_geo_lengthLineStart,
+-    lineEnd: d3_noop,
+-    polygonStart: d3_noop,
+-    polygonEnd: d3_noop
+-  };
+-  function d3_geo_lengthLineStart() {
+-    var λ0, sinφ0, cosφ0;
+-    d3_geo_length.point = function(λ, φ) {
+-      λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
+-      d3_geo_length.point = nextPoint;
++    force.linkDistance = function(x) {
++      if (!arguments.length) return linkDistance;
++      linkDistance = typeof x === "function" ? x : +x;
++      return force;
+     };
+-    d3_geo_length.lineEnd = function() {
+-      d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
++    force.distance = force.linkDistance;
++    force.linkStrength = function(x) {
++      if (!arguments.length) return linkStrength;
++      linkStrength = typeof x === "function" ? x : +x;
++      return force;
+     };
+-    function nextPoint(λ, φ) {
+-      var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
+-      d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
+-      λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
+-    }
+-  }
+-  function d3_geo_azimuthal(scale, angle) {
+-    function azimuthal(λ, φ) {
+-      var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
+-      return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
+-    }
+-    azimuthal.invert = function(x, y) {
+-      var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
+-      return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
++    force.friction = function(x) {
++      if (!arguments.length) return friction;
++      friction = +x;
++      return force;
+     };
+-    return azimuthal;
+-  }
+-  var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
+-    return Math.sqrt(2 / (1 + cosλcosφ));
+-  }, function(ρ) {
+-    return 2 * Math.asin(ρ / 2);
+-  });
+-  (d3.geo.azimuthalEqualArea = function() {
+-    return d3_geo_projection(d3_geo_azimuthalEqualArea);
+-  }).raw = d3_geo_azimuthalEqualArea;
+-  var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
+-    var c = Math.acos(cosλcosφ);
+-    return c && c / Math.sin(c);
+-  }, d3_identity);
+-  (d3.geo.azimuthalEquidistant = function() {
+-    return d3_geo_projection(d3_geo_azimuthalEquidistant);
+-  }).raw = d3_geo_azimuthalEquidistant;
+-  function d3_geo_conicConformal(φ0, φ1) {
+-    var cosφ0 = Math.cos(φ0), t = function(φ) {
+-      return Math.tan(π / 4 + φ / 2);
+-    }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
+-    if (!n) return d3_geo_mercator;
+-    function forward(λ, φ) {
+-      if (F > 0) {
+-        if (φ < -halfπ + ε) φ = -halfπ + ε;
+-      } else {
+-        if (φ > halfπ - ε) φ = halfπ - ε;
+-      }
+-      var ρ = F / Math.pow(t(φ), n);
+-      return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
+-    }
+-    forward.invert = function(x, y) {
+-      var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
+-      return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
++    force.charge = function(x) {
++      if (!arguments.length) return charge;
++      charge = typeof x === "function" ? x : +x;
++      return force;
+     };
+-    return forward;
+-  }
+-  (d3.geo.conicConformal = function() {
+-    return d3_geo_conic(d3_geo_conicConformal);
+-  }).raw = d3_geo_conicConformal;
+-  function d3_geo_conicEquidistant(φ0, φ1) {
+-    var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
+-    if (abs(n) < ε) return d3_geo_equirectangular;
+-    function forward(λ, φ) {
+-      var ρ = G - φ;
+-      return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
+-    }
+-    forward.invert = function(x, y) {
+-      var ρ0_y = G - y;
+-      return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
++    force.chargeDistance = function(x) {
++      if (!arguments.length) return Math.sqrt(chargeDistance2);
++      chargeDistance2 = x * x;
++      return force;
+     };
+-    return forward;
+-  }
+-  (d3.geo.conicEquidistant = function() {
+-    return d3_geo_conic(d3_geo_conicEquidistant);
+-  }).raw = d3_geo_conicEquidistant;
+-  var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
+-    return 1 / cosλcosφ;
+-  }, Math.atan);
+-  (d3.geo.gnomonic = function() {
+-    return d3_geo_projection(d3_geo_gnomonic);
+-  }).raw = d3_geo_gnomonic;
+-  function d3_geo_mercator(λ, φ) {
+-    return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
+-  }
+-  d3_geo_mercator.invert = function(x, y) {
+-    return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
+-  };
+-  function d3_geo_mercatorProjection(project) {
+-    var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
+-    m.scale = function() {
+-      var v = scale.apply(m, arguments);
+-      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
++    force.gravity = function(x) {
++      if (!arguments.length) return gravity;
++      gravity = +x;
++      return force;
+     };
+-    m.translate = function() {
+-      var v = translate.apply(m, arguments);
+-      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
++    force.theta = function(x) {
++      if (!arguments.length) return Math.sqrt(theta2);
++      theta2 = x * x;
++      return force;
+     };
+-    m.clipExtent = function(_) {
+-      var v = clipExtent.apply(m, arguments);
+-      if (v === m) {
+-        if (clipAuto = _ == null) {
+-          var k = π * scale(), t = translate();
+-          clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
++    force.alpha = function(x) {
++      if (!arguments.length) return alpha;
++      x = +x;
++      if (alpha) {
++        if (x > 0) {
++          alpha = x;
++        } else {
++          timer.c = null, timer.t = NaN, timer = null;
++          event.end({
++            type: "end",
++            alpha: alpha = 0
++          });
+         }
+-      } else if (clipAuto) {
+-        v = null;
++      } else if (x > 0) {
++        event.start({
++          type: "start",
++          alpha: alpha = x
++        });
++        timer = d3_timer(force.tick);
+       }
+-      return v;
+-    };
+-    return m.clipExtent(null);
+-  }
+-  (d3.geo.mercator = function() {
+-    return d3_geo_mercatorProjection(d3_geo_mercator);
+-  }).raw = d3_geo_mercator;
+-  var d3_geo_orthographic = d3_geo_azimuthal(function() {
+-    return 1;
+-  }, Math.asin);
+-  (d3.geo.orthographic = function() {
+-    return d3_geo_projection(d3_geo_orthographic);
+-  }).raw = d3_geo_orthographic;
+-  var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
+-    return 1 / (1 + cosλcosφ);
+-  }, function(ρ) {
+-    return 2 * Math.atan(ρ);
+-  });
+-  (d3.geo.stereographic = function() {
+-    return d3_geo_projection(d3_geo_stereographic);
+-  }).raw = d3_geo_stereographic;
+-  function d3_geo_transverseMercator(λ, φ) {
+-    return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
+-  }
+-  d3_geo_transverseMercator.invert = function(x, y) {
+-    return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
+-  };
+-  (d3.geo.transverseMercator = function() {
+-    var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
+-    projection.center = function(_) {
+-      return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
+-    };
+-    projection.rotate = function(_) {
+-      return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(), 
+-      [ _[0], _[1], _[2] - 90 ]);
++      return force;
+     };
+-    return rotate([ 0, 0, 90 ]);
+-  }).raw = d3_geo_transverseMercator;
+-  d3.geom = {};
+-  function d3_geom_pointX(d) {
+-    return d[0];
+-  }
+-  function d3_geom_pointY(d) {
+-    return d[1];
+-  }
+-  d3.geom.hull = function(vertices) {
+-    var x = d3_geom_pointX, y = d3_geom_pointY;
+-    if (arguments.length) return hull(vertices);
+-    function hull(data) {
+-      if (data.length < 3) return [];
+-      var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
+-      for (i = 0; i < n; i++) {
+-        points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
++    force.start = function() {
++      var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
++      for (i = 0; i < n; ++i) {
++        (o = nodes[i]).index = i;
++        o.weight = 0;
+       }
+-      points.sort(d3_geom_hullOrder);
+-      for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
+-      var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
+-      var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
+-      for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
+-      for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
+-      return polygon;
+-    }
+-    hull.x = function(_) {
+-      return arguments.length ? (x = _, hull) : x;
+-    };
+-    hull.y = function(_) {
+-      return arguments.length ? (y = _, hull) : y;
+-    };
+-    return hull;
+-  };
+-  function d3_geom_hullUpper(points) {
+-    var n = points.length, hull = [ 0, 1 ], hs = 2;
+-    for (var i = 2; i < n; i++) {
+-      while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
+-      hull[hs++] = i;
+-    }
+-    return hull.slice(0, hs);
+-  }
+-  function d3_geom_hullOrder(a, b) {
+-    return a[0] - b[0] || a[1] - b[1];
+-  }
+-  d3.geom.polygon = function(coordinates) {
+-    d3_subclass(coordinates, d3_geom_polygonPrototype);
+-    return coordinates;
+-  };
+-  var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
+-  d3_geom_polygonPrototype.area = function() {
+-    var i = -1, n = this.length, a, b = this[n - 1], area = 0;
+-    while (++i < n) {
+-      a = b;
+-      b = this[i];
+-      area += a[1] * b[0] - a[0] * b[1];
+-    }
+-    return area * .5;
+-  };
+-  d3_geom_polygonPrototype.centroid = function(k) {
+-    var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
+-    if (!arguments.length) k = -1 / (6 * this.area());
+-    while (++i < n) {
+-      a = b;
+-      b = this[i];
+-      c = a[0] * b[1] - b[0] * a[1];
+-      x += (a[0] + b[0]) * c;
+-      y += (a[1] + b[1]) * c;
+-    }
+-    return [ x * k, y * k ];
+-  };
+-  d3_geom_polygonPrototype.clip = function(subject) {
+-    var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
+-    while (++i < n) {
+-      input = subject.slice();
+-      subject.length = 0;
+-      b = this[i];
+-      c = input[(m = input.length - closed) - 1];
+-      j = -1;
+-      while (++j < m) {
+-        d = input[j];
+-        if (d3_geom_polygonInside(d, a, b)) {
+-          if (!d3_geom_polygonInside(c, a, b)) {
+-            subject.push(d3_geom_polygonIntersect(c, d, a, b));
++      for (i = 0; i < m; ++i) {
++        o = links[i];
++        if (typeof o.source == "number") o.source = nodes[o.source];
++        if (typeof o.target == "number") o.target = nodes[o.target];
++        ++o.source.weight;
++        ++o.target.weight;
++      }
++      for (i = 0; i < n; ++i) {
++        o = nodes[i];
++        if (isNaN(o.x)) o.x = position("x", w);
++        if (isNaN(o.y)) o.y = position("y", h);
++        if (isNaN(o.px)) o.px = o.x;
++        if (isNaN(o.py)) o.py = o.y;
++      }
++      distances = [];
++      if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
++      strengths = [];
++      if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
++      charges = [];
++      if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
++      function position(dimension, size) {
++        if (!neighbors) {
++          neighbors = new Array(n);
++          for (j = 0; j < n; ++j) {
++            neighbors[j] = [];
++          }
++          for (j = 0; j < m; ++j) {
++            var o = links[j];
++            neighbors[o.source.index].push(o.target);
++            neighbors[o.target.index].push(o.source);
+           }
+-          subject.push(d);
+-        } else if (d3_geom_polygonInside(c, a, b)) {
+-          subject.push(d3_geom_polygonIntersect(c, d, a, b));
+         }
+-        c = d;
++        var candidates = neighbors[i], j = -1, l = candidates.length, x;
++        while (++j < l) if (!isNaN(x = candidates[j][dimension])) return x;
++        return Math.random() * size;
+       }
+-      if (closed) subject.push(subject[0]);
+-      a = b;
++      return force.resume();
++    };
++    force.resume = function() {
++      return force.alpha(.1);
++    };
++    force.stop = function() {
++      return force.alpha(0);
++    };
++    force.drag = function() {
++      if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
++      if (!arguments.length) return drag;
++      this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
++    };
++    function dragmove(d) {
++      d.px = d3.event.x, d.py = d3.event.y;
++      force.resume();
+     }
+-    return subject;
++    return d3.rebind(force, event, "on");
+   };
+-  function d3_geom_polygonInside(p, a, b) {
+-    return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
+-  }
+-  function d3_geom_polygonIntersect(c, d, a, b) {
+-    var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
+-    return [ x1 + ua * x21, y1 + ua * y21 ];
+-  }
+-  function d3_geom_polygonClosed(coordinates) {
+-    var a = coordinates[0], b = coordinates[coordinates.length - 1];
+-    return !(a[0] - b[0] || a[1] - b[1]);
++  function d3_layout_forceDragstart(d) {
++    d.fixed |= 2;
+   }
+-  var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
+-  function d3_geom_voronoiBeach() {
+-    d3_geom_voronoiRedBlackNode(this);
+-    this.edge = this.site = this.circle = null;
++  function d3_layout_forceDragend(d) {
++    d.fixed &= ~6;
+   }
+-  function d3_geom_voronoiCreateBeach(site) {
+-    var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
+-    beach.site = site;
+-    return beach;
++  function d3_layout_forceMouseover(d) {
++    d.fixed |= 4;
++    d.px = d.x, d.py = d.y;
+   }
+-  function d3_geom_voronoiDetachBeach(beach) {
+-    d3_geom_voronoiDetachCircle(beach);
+-    d3_geom_voronoiBeaches.remove(beach);
+-    d3_geom_voronoiBeachPool.push(beach);
+-    d3_geom_voronoiRedBlackNode(beach);
++  function d3_layout_forceMouseout(d) {
++    d.fixed &= ~4;
+   }
+-  function d3_geom_voronoiRemoveBeach(beach) {
+-    var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
+-      x: x,
+-      y: y
+-    }, previous = beach.P, next = beach.N, disappearing = [ beach ];
+-    d3_geom_voronoiDetachBeach(beach);
+-    var lArc = previous;
+-    while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
+-      previous = lArc.P;
+-      disappearing.unshift(lArc);
+-      d3_geom_voronoiDetachBeach(lArc);
+-      lArc = previous;
+-    }
+-    disappearing.unshift(lArc);
+-    d3_geom_voronoiDetachCircle(lArc);
+-    var rArc = next;
+-    while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
+-      next = rArc.N;
+-      disappearing.push(rArc);
+-      d3_geom_voronoiDetachBeach(rArc);
+-      rArc = next;
++  function d3_layout_forceAccumulate(quad, alpha, charges) {
++    var cx = 0, cy = 0;
++    quad.charge = 0;
++    if (!quad.leaf) {
++      var nodes = quad.nodes, n = nodes.length, i = -1, c;
++      while (++i < n) {
++        c = nodes[i];
++        if (c == null) continue;
++        d3_layout_forceAccumulate(c, alpha, charges);
++        quad.charge += c.charge;
++        cx += c.charge * c.cx;
++        cy += c.charge * c.cy;
++      }
+     }
+-    disappearing.push(rArc);
+-    d3_geom_voronoiDetachCircle(rArc);
+-    var nArcs = disappearing.length, iArc;
+-    for (iArc = 1; iArc < nArcs; ++iArc) {
+-      rArc = disappearing[iArc];
+-      lArc = disappearing[iArc - 1];
+-      d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
++    if (quad.point) {
++      if (!quad.leaf) {
++        quad.point.x += Math.random() - .5;
++        quad.point.y += Math.random() - .5;
++      }
++      var k = alpha * charges[quad.point.index];
++      quad.charge += quad.pointCharge = k;
++      cx += k * quad.point.x;
++      cy += k * quad.point.y;
+     }
+-    lArc = disappearing[0];
+-    rArc = disappearing[nArcs - 1];
+-    rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
+-    d3_geom_voronoiAttachCircle(lArc);
+-    d3_geom_voronoiAttachCircle(rArc);
++    quad.cx = cx / quad.charge;
++    quad.cy = cy / quad.charge;
+   }
+-  function d3_geom_voronoiAddBeach(site) {
+-    var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
+-    while (node) {
+-      dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
+-      if (dxl > ε) node = node.L; else {
+-        dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
+-        if (dxr > ε) {
+-          if (!node.R) {
+-            lArc = node;
+-            break;
++  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
++  d3.layout.hierarchy = function() {
++    var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
++    function hierarchy(root) {
++      var stack = [ root ], nodes = [], node;
++      root.depth = 0;
++      while ((node = stack.pop()) != null) {
++        nodes.push(node);
++        if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
++          var n, childs, child;
++          while (--n >= 0) {
++            stack.push(child = childs[n]);
++            child.parent = node;
++            child.depth = node.depth + 1;
+           }
+-          node = node.R;
++          if (value) node.value = 0;
++          node.children = childs;
+         } else {
+-          if (dxl > -ε) {
+-            lArc = node.P;
+-            rArc = node;
+-          } else if (dxr > -ε) {
+-            lArc = node;
+-            rArc = node.N;
+-          } else {
+-            lArc = rArc = node;
+-          }
+-          break;
++          if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
++          delete node.children;
+         }
+       }
++      d3_layout_hierarchyVisitAfter(root, function(node) {
++        var childs, parent;
++        if (sort && (childs = node.children)) childs.sort(sort);
++        if (value && (parent = node.parent)) parent.value += node.value;
++      });
++      return nodes;
+     }
+-    var newArc = d3_geom_voronoiCreateBeach(site);
+-    d3_geom_voronoiBeaches.insert(lArc, newArc);
+-    if (!lArc && !rArc) return;
+-    if (lArc === rArc) {
+-      d3_geom_voronoiDetachCircle(lArc);
+-      rArc = d3_geom_voronoiCreateBeach(lArc.site);
+-      d3_geom_voronoiBeaches.insert(newArc, rArc);
+-      newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
+-      d3_geom_voronoiAttachCircle(lArc);
+-      d3_geom_voronoiAttachCircle(rArc);
+-      return;
++    hierarchy.sort = function(x) {
++      if (!arguments.length) return sort;
++      sort = x;
++      return hierarchy;
++    };
++    hierarchy.children = function(x) {
++      if (!arguments.length) return children;
++      children = x;
++      return hierarchy;
++    };
++    hierarchy.value = function(x) {
++      if (!arguments.length) return value;
++      value = x;
++      return hierarchy;
++    };
++    hierarchy.revalue = function(root) {
++      if (value) {
++        d3_layout_hierarchyVisitBefore(root, function(node) {
++          if (node.children) node.value = 0;
++        });
++        d3_layout_hierarchyVisitAfter(root, function(node) {
++          var parent;
++          if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
++          if (parent = node.parent) parent.value += node.value;
++        });
++      }
++      return root;
++    };
++    return hierarchy;
++  };
++  function d3_layout_hierarchyRebind(object, hierarchy) {
++    d3.rebind(object, hierarchy, "sort", "children", "value");
++    object.nodes = object;
++    object.links = d3_layout_hierarchyLinks;
++    return object;
++  }
++  function d3_layout_hierarchyVisitBefore(node, callback) {
++    var nodes = [ node ];
++    while ((node = nodes.pop()) != null) {
++      callback(node);
++      if ((children = node.children) && (n = children.length)) {
++        var n, children;
++        while (--n >= 0) nodes.push(children[n]);
++      }
+     }
+-    if (!rArc) {
+-      newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
+-      return;
++  }
++  function d3_layout_hierarchyVisitAfter(node, callback) {
++    var nodes = [ node ], nodes2 = [];
++    while ((node = nodes.pop()) != null) {
++      nodes2.push(node);
++      if ((children = node.children) && (n = children.length)) {
++        var i = -1, n, children;
++        while (++i < n) nodes.push(children[i]);
++      }
++    }
++    while ((node = nodes2.pop()) != null) {
++      callback(node);
+     }
+-    d3_geom_voronoiDetachCircle(lArc);
+-    d3_geom_voronoiDetachCircle(rArc);
+-    var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
+-      x: (cy * hb - by * hc) / d + ax,
+-      y: (bx * hc - cx * hb) / d + ay
+-    };
+-    d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
+-    newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
+-    rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
+-    d3_geom_voronoiAttachCircle(lArc);
+-    d3_geom_voronoiAttachCircle(rArc);
+   }
+-  function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
+-    var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
+-    if (!pby2) return rfocx;
+-    var lArc = arc.P;
+-    if (!lArc) return -Infinity;
+-    site = lArc.site;
+-    var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
+-    if (!plby2) return lfocx;
+-    var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
+-    if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
+-    return (rfocx + lfocx) / 2;
++  function d3_layout_hierarchyChildren(d) {
++    return d.children;
+   }
+-  function d3_geom_voronoiRightBreakPoint(arc, directrix) {
+-    var rArc = arc.N;
+-    if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
+-    var site = arc.site;
+-    return site.y === directrix ? site.x : Infinity;
++  function d3_layout_hierarchyValue(d) {
++    return d.value;
+   }
+-  function d3_geom_voronoiCell(site) {
+-    this.site = site;
+-    this.edges = [];
++  function d3_layout_hierarchySort(a, b) {
++    return b.value - a.value;
+   }
+-  d3_geom_voronoiCell.prototype.prepare = function() {
+-    var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
+-    while (iHalfEdge--) {
+-      edge = halfEdges[iHalfEdge].edge;
+-      if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
++  function d3_layout_hierarchyLinks(nodes) {
++    return d3.merge(nodes.map(function(parent) {
++      return (parent.children || []).map(function(child) {
++        return {
++          source: parent,
++          target: child
++        };
++      });
++    }));
++  }
++  d3.layout.partition = function() {
++    var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
++    function position(node, x, dx, dy) {
++      var children = node.children;
++      node.x = x;
++      node.y = node.depth * dy;
++      node.dx = dx;
++      node.dy = dy;
++      if (children && (n = children.length)) {
++        var i = -1, n, c, d;
++        dx = node.value ? dx / node.value : 0;
++        while (++i < n) {
++          position(c = children[i], x, d = c.value * dx, dy);
++          x += d;
++        }
++      }
+     }
+-    halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
+-    return halfEdges.length;
++    function depth(node) {
++      var children = node.children, d = 0;
++      if (children && (n = children.length)) {
++        var i = -1, n;
++        while (++i < n) d = Math.max(d, depth(children[i]));
++      }
++      return 1 + d;
++    }
++    function partition(d, i) {
++      var nodes = hierarchy.call(this, d, i);
++      position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
++      return nodes;
++    }
++    partition.size = function(x) {
++      if (!arguments.length) return size;
++      size = x;
++      return partition;
++    };
++    return d3_layout_hierarchyRebind(partition, hierarchy);
+   };
+-  function d3_geom_voronoiCloseCells(extent) {
+-    var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
+-    while (iCell--) {
+-      cell = cells[iCell];
+-      if (!cell || !cell.prepare()) continue;
+-      halfEdges = cell.edges;
+-      nHalfEdges = halfEdges.length;
+-      iHalfEdge = 0;
+-      while (iHalfEdge < nHalfEdges) {
+-        end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
+-        start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
+-        if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
+-          halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
+-            x: x0,
+-            y: abs(x2 - x0) < ε ? y2 : y1
+-          } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
+-            x: abs(y2 - y1) < ε ? x2 : x1,
+-            y: y1
+-          } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
+-            x: x1,
+-            y: abs(x2 - x1) < ε ? y2 : y0
+-          } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
+-            x: abs(y2 - y0) < ε ? x2 : x0,
+-            y: y0
+-          } : null), cell.site, null));
+-          ++nHalfEdges;
++  d3.layout.pie = function() {
++    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
++    function pie(data) {
++      var n = data.length, values = data.map(function(d, i) {
++        return +value.call(pie, d, i);
++      }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), sum = d3.sum(values), k = sum ? (da - n * pa) / sum : 0, index = d3.range(n), arcs = [], v;
++      if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
++        return values[j] - values[i];
++      } : function(i, j) {
++        return sort(data[i], data[j]);
++      });
++      index.forEach(function(i) {
++        arcs[i] = {
++          data: data[i],
++          value: v = values[i],
++          startAngle: a,
++          endAngle: a += v * k + pa,
++          padAngle: p
++        };
++      });
++      return arcs;
++    }
++    pie.value = function(_) {
++      if (!arguments.length) return value;
++      value = _;
++      return pie;
++    };
++    pie.sort = function(_) {
++      if (!arguments.length) return sort;
++      sort = _;
++      return pie;
++    };
++    pie.startAngle = function(_) {
++      if (!arguments.length) return startAngle;
++      startAngle = _;
++      return pie;
++    };
++    pie.endAngle = function(_) {
++      if (!arguments.length) return endAngle;
++      endAngle = _;
++      return pie;
++    };
++    pie.padAngle = function(_) {
++      if (!arguments.length) return padAngle;
++      padAngle = _;
++      return pie;
++    };
++    return pie;
++  };
++  var d3_layout_pieSortByValue = {};
++  d3.layout.stack = function() {
++    var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
++    function stack(data, index) {
++      if (!(n = data.length)) return data;
++      var series = data.map(function(d, i) {
++        return values.call(stack, d, i);
++      });
++      var points = series.map(function(d) {
++        return d.map(function(v, i) {
++          return [ x.call(stack, v, i), y.call(stack, v, i) ];
++        });
++      });
++      var orders = order.call(stack, points, index);
++      series = d3.permute(series, orders);
++      points = d3.permute(points, orders);
++      var offsets = offset.call(stack, points, index);
++      var m = series[0].length, n, i, j, o;
++      for (j = 0; j < m; ++j) {
++        out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
++        for (i = 1; i < n; ++i) {
++          out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
++        }
++      }
++      return data;
++    }
++    stack.values = function(x) {
++      if (!arguments.length) return values;
++      values = x;
++      return stack;
++    };
++    stack.order = function(x) {
++      if (!arguments.length) return order;
++      order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
++      return stack;
++    };
++    stack.offset = function(x) {
++      if (!arguments.length) return offset;
++      offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
++      return stack;
++    };
++    stack.x = function(z) {
++      if (!arguments.length) return x;
++      x = z;
++      return stack;
++    };
++    stack.y = function(z) {
++      if (!arguments.length) return y;
++      y = z;
++      return stack;
++    };
++    stack.out = function(z) {
++      if (!arguments.length) return out;
++      out = z;
++      return stack;
++    };
++    return stack;
++  };
++  function d3_layout_stackX(d) {
++    return d.x;
++  }
++  function d3_layout_stackY(d) {
++    return d.y;
++  }
++  function d3_layout_stackOut(d, y0, y) {
++    d.y0 = y0;
++    d.y = y;
++  }
++  var d3_layout_stackOrders = d3.map({
++    "inside-out": function(data) {
++      var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
++        return max[a] - max[b];
++      }), top = 0, bottom = 0, tops = [], bottoms = [];
++      for (i = 0; i < n; ++i) {
++        j = index[i];
++        if (top < bottom) {
++          top += sums[j];
++          tops.push(j);
++        } else {
++          bottom += sums[j];
++          bottoms.push(j);
++        }
++      }
++      return bottoms.reverse().concat(tops);
++    },
++    reverse: function(data) {
++      return d3.range(data.length).reverse();
++    },
++    "default": d3_layout_stackOrderDefault
++  });
++  var d3_layout_stackOffsets = d3.map({
++    silhouette: function(data) {
++      var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
++      for (j = 0; j < m; ++j) {
++        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
++        if (o > max) max = o;
++        sums.push(o);
++      }
++      for (j = 0; j < m; ++j) {
++        y0[j] = (max - sums[j]) / 2;
++      }
++      return y0;
++    },
++    wiggle: function(data) {
++      var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
++      y0[0] = o = o0 = 0;
++      for (j = 1; j < m; ++j) {
++        for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
++        for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
++          for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
++            s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
++          }
++          s2 += s3 * data[i][j][1];
+         }
++        y0[j] = o -= s1 ? s2 / s1 * dx : 0;
++        if (o < o0) o0 = o;
+       }
+-    }
+-  }
+-  function d3_geom_voronoiHalfEdgeOrder(a, b) {
+-    return b.angle - a.angle;
++      for (j = 0; j < m; ++j) y0[j] -= o0;
++      return y0;
++    },
++    expand: function(data) {
++      var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
++      for (j = 0; j < m; ++j) {
++        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
++        if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
++      }
++      for (j = 0; j < m; ++j) y0[j] = 0;
++      return y0;
++    },
++    zero: d3_layout_stackOffsetZero
++  });
++  function d3_layout_stackOrderDefault(data) {
++    return d3.range(data.length);
+   }
+-  function d3_geom_voronoiCircle() {
+-    d3_geom_voronoiRedBlackNode(this);
+-    this.x = this.y = this.arc = this.site = this.cy = null;
++  function d3_layout_stackOffsetZero(data) {
++    var j = -1, m = data[0].length, y0 = [];
++    while (++j < m) y0[j] = 0;
++    return y0;
+   }
+-  function d3_geom_voronoiAttachCircle(arc) {
+-    var lArc = arc.P, rArc = arc.N;
+-    if (!lArc || !rArc) return;
+-    var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
+-    if (lSite === rSite) return;
+-    var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
+-    var d = 2 * (ax * cy - ay * cx);
+-    if (d >= -ε2) return;
+-    var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
+-    var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
+-    circle.arc = arc;
+-    circle.site = cSite;
+-    circle.x = x + bx;
+-    circle.y = cy + Math.sqrt(x * x + y * y);
+-    circle.cy = cy;
+-    arc.circle = circle;
+-    var before = null, node = d3_geom_voronoiCircles._;
+-    while (node) {
+-      if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
+-        if (node.L) node = node.L; else {
+-          before = node.P;
+-          break;
+-        }
+-      } else {
+-        if (node.R) node = node.R; else {
+-          before = node;
+-          break;
+-        }
++  function d3_layout_stackMaxIndex(array) {
++    var i = 1, j = 0, v = array[0][1], k, n = array.length;
++    for (;i < n; ++i) {
++      if ((k = array[i][1]) > v) {
++        j = i;
++        v = k;
+       }
+     }
+-    d3_geom_voronoiCircles.insert(before, circle);
+-    if (!before) d3_geom_voronoiFirstCircle = circle;
++    return j;
+   }
+-  function d3_geom_voronoiDetachCircle(arc) {
+-    var circle = arc.circle;
+-    if (circle) {
+-      if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
+-      d3_geom_voronoiCircles.remove(circle);
+-      d3_geom_voronoiCirclePool.push(circle);
+-      d3_geom_voronoiRedBlackNode(circle);
+-      arc.circle = null;
+-    }
++  function d3_layout_stackReduceSum(d) {
++    return d.reduce(d3_layout_stackSum, 0);
+   }
+-  function d3_geom_voronoiClipEdges(extent) {
+-    var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
+-    while (i--) {
+-      e = edges[i];
+-      if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
+-        e.a = e.b = null;
+-        edges.splice(i, 1);
+-      }
+-    }
++  function d3_layout_stackSum(p, d) {
++    return p + d[1];
+   }
+-  function d3_geom_voronoiConnectEdge(edge, extent) {
+-    var vb = edge.b;
+-    if (vb) return true;
+-    var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
+-    if (ry === ly) {
+-      if (fx < x0 || fx >= x1) return;
+-      if (lx > rx) {
+-        if (!va) va = {
+-          x: fx,
+-          y: y0
+-        }; else if (va.y >= y1) return;
+-        vb = {
+-          x: fx,
+-          y: y1
+-        };
+-      } else {
+-        if (!va) va = {
+-          x: fx,
+-          y: y1
+-        }; else if (va.y < y0) return;
+-        vb = {
+-          x: fx,
+-          y: y0
+-        };
++  d3.layout.histogram = function() {
++    var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
++    function histogram(data, i) {
++      var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
++      while (++i < m) {
++        bin = bins[i] = [];
++        bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
++        bin.y = 0;
+       }
+-    } else {
+-      fm = (lx - rx) / (ry - ly);
+-      fb = fy - fm * fx;
+-      if (fm < -1 || fm > 1) {
+-        if (lx > rx) {
+-          if (!va) va = {
+-            x: (y0 - fb) / fm,
+-            y: y0
+-          }; else if (va.y >= y1) return;
+-          vb = {
+-            x: (y1 - fb) / fm,
+-            y: y1
+-          };
+-        } else {
+-          if (!va) va = {
+-            x: (y1 - fb) / fm,
+-            y: y1
+-          }; else if (va.y < y0) return;
+-          vb = {
+-            x: (y0 - fb) / fm,
+-            y: y0
+-          };
+-        }
+-      } else {
+-        if (ly < ry) {
+-          if (!va) va = {
+-            x: x0,
+-            y: fm * x0 + fb
+-          }; else if (va.x >= x1) return;
+-          vb = {
+-            x: x1,
+-            y: fm * x1 + fb
+-          };
+-        } else {
+-          if (!va) va = {
+-            x: x1,
+-            y: fm * x1 + fb
+-          }; else if (va.x < x0) return;
+-          vb = {
+-            x: x0,
+-            y: fm * x0 + fb
+-          };
++      if (m > 0) {
++        i = -1;
++        while (++i < n) {
++          x = values[i];
++          if (x >= range[0] && x <= range[1]) {
++            bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
++            bin.y += k;
++            bin.push(data[i]);
++          }
+         }
+       }
++      return bins;
+     }
+-    edge.a = va;
+-    edge.b = vb;
+-    return true;
+-  }
+-  function d3_geom_voronoiEdge(lSite, rSite) {
+-    this.l = lSite;
+-    this.r = rSite;
+-    this.a = this.b = null;
++    histogram.value = function(x) {
++      if (!arguments.length) return valuer;
++      valuer = x;
++      return histogram;
++    };
++    histogram.range = function(x) {
++      if (!arguments.length) return ranger;
++      ranger = d3_functor(x);
++      return histogram;
++    };
++    histogram.bins = function(x) {
++      if (!arguments.length) return binner;
++      binner = typeof x === "number" ? function(range) {
++        return d3_layout_histogramBinFixed(range, x);
++      } : d3_functor(x);
++      return histogram;
++    };
++    histogram.frequency = function(x) {
++      if (!arguments.length) return frequency;
++      frequency = !!x;
++      return histogram;
++    };
++    return histogram;
++  };
++  function d3_layout_histogramBinSturges(range, values) {
++    return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
+   }
+-  function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
+-    var edge = new d3_geom_voronoiEdge(lSite, rSite);
+-    d3_geom_voronoiEdges.push(edge);
+-    if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
+-    if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
+-    d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
+-    d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
+-    return edge;
++  function d3_layout_histogramBinFixed(range, n) {
++    var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
++    while (++x <= n) f[x] = m * x + b;
++    return f;
+   }
+-  function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
+-    var edge = new d3_geom_voronoiEdge(lSite, null);
+-    edge.a = va;
+-    edge.b = vb;
+-    d3_geom_voronoiEdges.push(edge);
+-    return edge;
++  function d3_layout_histogramRange(values) {
++    return [ d3.min(values), d3.max(values) ];
+   }
+-  function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
+-    if (!edge.a && !edge.b) {
+-      edge.a = vertex;
+-      edge.l = lSite;
+-      edge.r = rSite;
+-    } else if (edge.l === rSite) {
+-      edge.b = vertex;
+-    } else {
+-      edge.a = vertex;
++  d3.layout.pack = function() {
++    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
++    function pack(d, i) {
++      var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
++        return radius;
++      };
++      root.x = root.y = 0;
++      d3_layout_hierarchyVisitAfter(root, function(d) {
++        d.r = +r(d.value);
++      });
++      d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
++      if (padding) {
++        var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
++        d3_layout_hierarchyVisitAfter(root, function(d) {
++          d.r += dr;
++        });
++        d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
++        d3_layout_hierarchyVisitAfter(root, function(d) {
++          d.r -= dr;
++        });
++      }
++      d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
++      return nodes;
+     }
++    pack.size = function(_) {
++      if (!arguments.length) return size;
++      size = _;
++      return pack;
++    };
++    pack.radius = function(_) {
++      if (!arguments.length) return radius;
++      radius = _ == null || typeof _ === "function" ? _ : +_;
++      return pack;
++    };
++    pack.padding = function(_) {
++      if (!arguments.length) return padding;
++      padding = +_;
++      return pack;
++    };
++    return d3_layout_hierarchyRebind(pack, hierarchy);
++  };
++  function d3_layout_packSort(a, b) {
++    return a.value - b.value;
+   }
+-  function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
+-    var va = edge.a, vb = edge.b;
+-    this.edge = edge;
+-    this.site = lSite;
+-    this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
++  function d3_layout_packInsert(a, b) {
++    var c = a._pack_next;
++    a._pack_next = b;
++    b._pack_prev = a;
++    b._pack_next = c;
++    c._pack_prev = b;
+   }
+-  d3_geom_voronoiHalfEdge.prototype = {
+-    start: function() {
+-      return this.edge.l === this.site ? this.edge.a : this.edge.b;
+-    },
+-    end: function() {
+-      return this.edge.l === this.site ? this.edge.b : this.edge.a;
+-    }
+-  };
+-  function d3_geom_voronoiRedBlackTree() {
+-    this._ = null;
++  function d3_layout_packSplice(a, b) {
++    a._pack_next = b;
++    b._pack_prev = a;
+   }
+-  function d3_geom_voronoiRedBlackNode(node) {
+-    node.U = node.C = node.L = node.R = node.P = node.N = null;
++  function d3_layout_packIntersects(a, b) {
++    var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
++    return .999 * dr * dr > dx * dx + dy * dy;
+   }
+-  d3_geom_voronoiRedBlackTree.prototype = {
+-    insert: function(after, node) {
+-      var parent, grandpa, uncle;
+-      if (after) {
+-        node.P = after;
+-        node.N = after.N;
+-        if (after.N) after.N.P = node;
+-        after.N = node;
+-        if (after.R) {
+-          after = after.R;
+-          while (after.L) after = after.L;
+-          after.L = node;
+-        } else {
+-          after.R = node;
+-        }
+-        parent = after;
+-      } else if (this._) {
+-        after = d3_geom_voronoiRedBlackFirst(this._);
+-        node.P = null;
+-        node.N = after;
+-        after.P = after.L = node;
+-        parent = after;
+-      } else {
+-        node.P = node.N = null;
+-        this._ = node;
+-        parent = null;
+-      }
+-      node.L = node.R = null;
+-      node.U = parent;
+-      node.C = true;
+-      after = node;
+-      while (parent && parent.C) {
+-        grandpa = parent.U;
+-        if (parent === grandpa.L) {
+-          uncle = grandpa.R;
+-          if (uncle && uncle.C) {
+-            parent.C = uncle.C = false;
+-            grandpa.C = true;
+-            after = grandpa;
+-          } else {
+-            if (after === parent.R) {
+-              d3_geom_voronoiRedBlackRotateLeft(this, parent);
+-              after = parent;
+-              parent = after.U;
++  function d3_layout_packSiblings(node) {
++    if (!(nodes = node.children) || !(n = nodes.length)) return;
++    var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
++    function bound(node) {
++      xMin = Math.min(node.x - node.r, xMin);
++      xMax = Math.max(node.x + node.r, xMax);
++      yMin = Math.min(node.y - node.r, yMin);
++      yMax = Math.max(node.y + node.r, yMax);
++    }
++    nodes.forEach(d3_layout_packLink);
++    a = nodes[0];
++    a.x = -a.r;
++    a.y = 0;
++    bound(a);
++    if (n > 1) {
++      b = nodes[1];
++      b.x = b.r;
++      b.y = 0;
++      bound(b);
++      if (n > 2) {
++        c = nodes[2];
++        d3_layout_packPlace(a, b, c);
++        bound(c);
++        d3_layout_packInsert(a, c);
++        a._pack_prev = c;
++        d3_layout_packInsert(c, b);
++        b = a._pack_next;
++        for (i = 3; i < n; i++) {
++          d3_layout_packPlace(a, b, c = nodes[i]);
++          var isect = 0, s1 = 1, s2 = 1;
++          for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
++            if (d3_layout_packIntersects(j, c)) {
++              isect = 1;
++              break;
+             }
+-            parent.C = false;
+-            grandpa.C = true;
+-            d3_geom_voronoiRedBlackRotateRight(this, grandpa);
+           }
+-        } else {
+-          uncle = grandpa.L;
+-          if (uncle && uncle.C) {
+-            parent.C = uncle.C = false;
+-            grandpa.C = true;
+-            after = grandpa;
+-          } else {
+-            if (after === parent.L) {
+-              d3_geom_voronoiRedBlackRotateRight(this, parent);
+-              after = parent;
+-              parent = after.U;
++          if (isect == 1) {
++            for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
++              if (d3_layout_packIntersects(k, c)) {
++                break;
++              }
+             }
+-            parent.C = false;
+-            grandpa.C = true;
+-            d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
++          }
++          if (isect) {
++            if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
++            i--;
++          } else {
++            d3_layout_packInsert(a, c);
++            b = c;
++            bound(c);
+           }
+         }
+-        parent = after.U;
+       }
+-      this._.C = false;
+-    },
+-    remove: function(node) {
+-      if (node.N) node.N.P = node.P;
+-      if (node.P) node.P.N = node.N;
+-      node.N = node.P = null;
+-      var parent = node.U, sibling, left = node.L, right = node.R, next, red;
+-      if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
+-      if (parent) {
+-        if (parent.L === node) parent.L = next; else parent.R = next;
+-      } else {
+-        this._ = next;
++    }
++    var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
++    for (i = 0; i < n; i++) {
++      c = nodes[i];
++      c.x -= cx;
++      c.y -= cy;
++      cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
++    }
++    node.r = cr;
++    nodes.forEach(d3_layout_packUnlink);
++  }
++  function d3_layout_packLink(node) {
++    node._pack_next = node._pack_prev = node;
++  }
++  function d3_layout_packUnlink(node) {
++    delete node._pack_next;
++    delete node._pack_prev;
++  }
++  function d3_layout_packTransform(node, x, y, k) {
++    var children = node.children;
++    node.x = x += k * node.x;
++    node.y = y += k * node.y;
++    node.r *= k;
++    if (children) {
++      var i = -1, n = children.length;
++      while (++i < n) d3_layout_packTransform(children[i], x, y, k);
++    }
++  }
++  function d3_layout_packPlace(a, b, c) {
++    var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
++    if (db && (dx || dy)) {
++      var da = b.r + c.r, dc = dx * dx + dy * dy;
++      da *= da;
++      db *= db;
++      var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
++      c.x = a.x + x * dx + y * dy;
++      c.y = a.y + x * dy - y * dx;
++    } else {
++      c.x = a.x + db;
++      c.y = a.y;
++    }
++  }
++  d3.layout.tree = function() {
++    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
++    function tree(d, i) {
++      var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
++      d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
++      d3_layout_hierarchyVisitBefore(root1, secondWalk);
++      if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
++        var left = root0, right = root0, bottom = root0;
++        d3_layout_hierarchyVisitBefore(root0, function(node) {
++          if (node.x < left.x) left = node;
++          if (node.x > right.x) right = node;
++          if (node.depth > bottom.depth) bottom = node;
++        });
++        var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
++        d3_layout_hierarchyVisitBefore(root0, function(node) {
++          node.x = (node.x + tx) * kx;
++          node.y = node.depth * ky;
++        });
+       }
+-      if (left && right) {
+-        red = next.C;
+-        next.C = node.C;
+-        next.L = left;
+-        left.U = next;
+-        if (next !== right) {
+-          parent = next.U;
+-          next.U = node.U;
+-          node = next.R;
+-          parent.L = node;
+-          next.R = right;
+-          right.U = next;
+-        } else {
+-          next.U = parent;
+-          parent = next;
+-          node = next.R;
++      return nodes;
++    }
++    function wrapTree(root0) {
++      var root1 = {
++        A: null,
++        children: [ root0 ]
++      }, queue = [ root1 ], node1;
++      while ((node1 = queue.pop()) != null) {
++        for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
++          queue.push((children[i] = child = {
++            _: children[i],
++            parent: node1,
++            children: (child = children[i].children) && child.slice() || [],
++            A: null,
++            a: null,
++            z: 0,
++            m: 0,
++            c: 0,
++            s: 0,
++            t: null,
++            i: i
++          }).a = child);
+         }
+-      } else {
+-        red = node.C;
+-        node = next;
+-      }
+-      if (node) node.U = parent;
+-      if (red) return;
+-      if (node && node.C) {
+-        node.C = false;
+-        return;
+       }
+-      do {
+-        if (node === this._) break;
+-        if (node === parent.L) {
+-          sibling = parent.R;
+-          if (sibling.C) {
+-            sibling.C = false;
+-            parent.C = true;
+-            d3_geom_voronoiRedBlackRotateLeft(this, parent);
+-            sibling = parent.R;
+-          }
+-          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
+-            if (!sibling.R || !sibling.R.C) {
+-              sibling.L.C = false;
+-              sibling.C = true;
+-              d3_geom_voronoiRedBlackRotateRight(this, sibling);
+-              sibling = parent.R;
+-            }
+-            sibling.C = parent.C;
+-            parent.C = sibling.R.C = false;
+-            d3_geom_voronoiRedBlackRotateLeft(this, parent);
+-            node = this._;
+-            break;
+-          }
++      return root1.children[0];
++    }
++    function firstWalk(v) {
++      var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
++      if (children.length) {
++        d3_layout_treeShift(v);
++        var midpoint = (children[0].z + children[children.length - 1].z) / 2;
++        if (w) {
++          v.z = w.z + separation(v._, w._);
++          v.m = v.z - midpoint;
+         } else {
+-          sibling = parent.L;
+-          if (sibling.C) {
+-            sibling.C = false;
+-            parent.C = true;
+-            d3_geom_voronoiRedBlackRotateRight(this, parent);
+-            sibling = parent.L;
+-          }
+-          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
+-            if (!sibling.L || !sibling.L.C) {
+-              sibling.R.C = false;
+-              sibling.C = true;
+-              d3_geom_voronoiRedBlackRotateLeft(this, sibling);
+-              sibling = parent.L;
+-            }
+-            sibling.C = parent.C;
+-            parent.C = sibling.L.C = false;
+-            d3_geom_voronoiRedBlackRotateRight(this, parent);
+-            node = this._;
+-            break;
++          v.z = midpoint;
++        }
++      } else if (w) {
++        v.z = w.z + separation(v._, w._);
++      }
++      v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
++    }
++    function secondWalk(v) {
++      v._.x = v.z + v.parent.m;
++      v.m += v.parent.m;
++    }
++    function apportion(v, w, ancestor) {
++      if (w) {
++        var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
++        while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
++          vom = d3_layout_treeLeft(vom);
++          vop = d3_layout_treeRight(vop);
++          vop.a = v;
++          shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
++          if (shift > 0) {
++            d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
++            sip += shift;
++            sop += shift;
+           }
++          sim += vim.m;
++          sip += vip.m;
++          som += vom.m;
++          sop += vop.m;
+         }
+-        sibling.C = true;
+-        node = parent;
+-        parent = parent.U;
+-      } while (!node.C);
+-      if (node) node.C = false;
++        if (vim && !d3_layout_treeRight(vop)) {
++          vop.t = vim;
++          vop.m += sim - sop;
++        }
++        if (vip && !d3_layout_treeLeft(vom)) {
++          vom.t = vip;
++          vom.m += sip - som;
++          ancestor = v;
++        }
++      }
++      return ancestor;
+     }
+-  };
+-  function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
+-    var p = node, q = node.R, parent = p.U;
+-    if (parent) {
+-      if (parent.L === p) parent.L = q; else parent.R = q;
+-    } else {
+-      tree._ = q;
++    function sizeNode(node) {
++      node.x *= size[0];
++      node.y = node.depth * size[1];
+     }
+-    q.U = parent;
+-    p.U = q;
+-    p.R = q.L;
+-    if (p.R) p.R.U = p;
+-    q.L = p;
++    tree.separation = function(x) {
++      if (!arguments.length) return separation;
++      separation = x;
++      return tree;
++    };
++    tree.size = function(x) {
++      if (!arguments.length) return nodeSize ? null : size;
++      nodeSize = (size = x) == null ? sizeNode : null;
++      return tree;
++    };
++    tree.nodeSize = function(x) {
++      if (!arguments.length) return nodeSize ? size : null;
++      nodeSize = (size = x) == null ? null : sizeNode;
++      return tree;
++    };
++    return d3_layout_hierarchyRebind(tree, hierarchy);
++  };
++  function d3_layout_treeSeparation(a, b) {
++    return a.parent == b.parent ? 1 : 2;
+   }
+-  function d3_geom_voronoiRedBlackRotateRight(tree, node) {
+-    var p = node, q = node.L, parent = p.U;
+-    if (parent) {
+-      if (parent.L === p) parent.L = q; else parent.R = q;
+-    } else {
+-      tree._ = q;
+-    }
+-    q.U = parent;
+-    p.U = q;
+-    p.L = q.R;
+-    if (p.L) p.L.U = p;
+-    q.R = p;
++  function d3_layout_treeLeft(v) {
++    var children = v.children;
++    return children.length ? children[0] : v.t;
+   }
+-  function d3_geom_voronoiRedBlackFirst(node) {
+-    while (node.L) node = node.L;
+-    return node;
++  function d3_layout_treeRight(v) {
++    var children = v.children, n;
++    return (n = children.length) ? children[n - 1] : v.t;
+   }
+-  function d3_geom_voronoi(sites, bbox) {
+-    var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
+-    d3_geom_voronoiEdges = [];
+-    d3_geom_voronoiCells = new Array(sites.length);
+-    d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
+-    d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
+-    while (true) {
+-      circle = d3_geom_voronoiFirstCircle;
+-      if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
+-        if (site.x !== x0 || site.y !== y0) {
+-          d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
+-          d3_geom_voronoiAddBeach(site);
+-          x0 = site.x, y0 = site.y;
+-        }
+-        site = sites.pop();
+-      } else if (circle) {
+-        d3_geom_voronoiRemoveBeach(circle.arc);
+-      } else {
+-        break;
+-      }
++  function d3_layout_treeMove(wm, wp, shift) {
++    var change = shift / (wp.i - wm.i);
++    wp.c -= change;
++    wp.s += shift;
++    wm.c += change;
++    wp.z += shift;
++    wp.m += shift;
++  }
++  function d3_layout_treeShift(v) {
++    var shift = 0, change = 0, children = v.children, i = children.length, w;
++    while (--i >= 0) {
++      w = children[i];
++      w.z += shift;
++      w.m += shift;
++      shift += w.s + (change += w.c);
+     }
+-    if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
+-    var diagram = {
+-      cells: d3_geom_voronoiCells,
+-      edges: d3_geom_voronoiEdges
+-    };
+-    d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
+-    return diagram;
+   }
+-  function d3_geom_voronoiVertexOrder(a, b) {
+-    return b.y - a.y || b.x - a.x;
++  function d3_layout_treeAncestor(vim, v, ancestor) {
++    return vim.a.parent === v.parent ? vim.a : ancestor;
+   }
+-  d3.geom.voronoi = function(points) {
+-    var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
+-    if (points) return voronoi(points);
+-    function voronoi(data) {
+-      var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
+-      d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
+-        var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
+-          var s = e.start();
+-          return [ s.x, s.y ];
+-        }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
+-        polygon.point = data[i];
++  d3.layout.cluster = function() {
++    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
++    function cluster(d, i) {
++      var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
++      d3_layout_hierarchyVisitAfter(root, function(node) {
++        var children = node.children;
++        if (children && children.length) {
++          node.x = d3_layout_clusterX(children);
++          node.y = d3_layout_clusterY(children);
++        } else {
++          node.x = previousNode ? x += separation(node, previousNode) : 0;
++          node.y = 0;
++          previousNode = node;
++        }
+       });
+-      return polygons;
+-    }
+-    function sites(data) {
+-      return data.map(function(d, i) {
+-        return {
+-          x: Math.round(fx(d, i) / ε) * ε,
+-          y: Math.round(fy(d, i) / ε) * ε,
+-          i: i
+-        };
++      var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
++      d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
++        node.x = (node.x - root.x) * size[0];
++        node.y = (root.y - node.y) * size[1];
++      } : function(node) {
++        node.x = (node.x - x0) / (x1 - x0) * size[0];
++        node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
+       });
++      return nodes;
+     }
+-    voronoi.links = function(data) {
+-      return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
+-        return edge.l && edge.r;
+-      }).map(function(edge) {
+-        return {
+-          source: data[edge.l.i],
+-          target: data[edge.r.i]
+-        };
+-      });
+-    };
+-    voronoi.triangles = function(data) {
+-      var triangles = [];
+-      d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
+-        var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
+-        while (++j < m) {
+-          e0 = e1;
+-          s0 = s1;
+-          e1 = edges[j].edge;
+-          s1 = e1.l === site ? e1.r : e1.l;
+-          if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
+-            triangles.push([ data[i], data[s0.i], data[s1.i] ]);
+-          }
+-        }
+-      });
+-      return triangles;
+-    };
+-    voronoi.x = function(_) {
+-      return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
+-    };
+-    voronoi.y = function(_) {
+-      return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
++    cluster.separation = function(x) {
++      if (!arguments.length) return separation;
++      separation = x;
++      return cluster;
+     };
+-    voronoi.clipExtent = function(_) {
+-      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
+-      clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
+-      return voronoi;
++    cluster.size = function(x) {
++      if (!arguments.length) return nodeSize ? null : size;
++      nodeSize = (size = x) == null;
++      return cluster;
+     };
+-    voronoi.size = function(_) {
+-      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
+-      return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
++    cluster.nodeSize = function(x) {
++      if (!arguments.length) return nodeSize ? size : null;
++      nodeSize = (size = x) != null;
++      return cluster;
+     };
+-    return voronoi;
++    return d3_layout_hierarchyRebind(cluster, hierarchy);
+   };
+-  var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
+-  function d3_geom_voronoiTriangleArea(a, b, c) {
+-    return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
++  function d3_layout_clusterY(children) {
++    return 1 + d3.max(children, function(child) {
++      return child.y;
++    });
+   }
+-  d3.geom.delaunay = function(vertices) {
+-    return d3.geom.voronoi().triangles(vertices);
+-  };
+-  d3.geom.quadtree = function(points, x1, y1, x2, y2) {
+-    var x = d3_geom_pointX, y = d3_geom_pointY, compat;
+-    if (compat = arguments.length) {
+-      x = d3_geom_quadtreeCompatX;
+-      y = d3_geom_quadtreeCompatY;
+-      if (compat === 3) {
+-        y2 = y1;
+-        x2 = x1;
+-        y1 = x1 = 0;
++  function d3_layout_clusterX(children) {
++    return children.reduce(function(x, child) {
++      return x + child.x;
++    }, 0) / children.length;
++  }
++  function d3_layout_clusterLeft(node) {
++    var children = node.children;
++    return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
++  }
++  function d3_layout_clusterRight(node) {
++    var children = node.children, n;
++    return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
++  }
++  d3.layout.treemap = function() {
++    var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
++    function scale(children, k) {
++      var i = -1, n = children.length, child, area;
++      while (++i < n) {
++        area = (child = children[i]).value * (k < 0 ? 0 : k);
++        child.area = isNaN(area) || area <= 0 ? 0 : area;
+       }
+-      return quadtree(points);
+     }
+-    function quadtree(data) {
+-      var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
+-      if (x1 != null) {
+-        x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
+-      } else {
+-        x2_ = y2_ = -(x1_ = y1_ = Infinity);
+-        xs = [], ys = [];
+-        n = data.length;
+-        if (compat) for (i = 0; i < n; ++i) {
+-          d = data[i];
+-          if (d.x < x1_) x1_ = d.x;
+-          if (d.y < y1_) y1_ = d.y;
+-          if (d.x > x2_) x2_ = d.x;
+-          if (d.y > y2_) y2_ = d.y;
+-          xs.push(d.x);
+-          ys.push(d.y);
+-        } else for (i = 0; i < n; ++i) {
+-          var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
+-          if (x_ < x1_) x1_ = x_;
+-          if (y_ < y1_) y1_ = y_;
+-          if (x_ > x2_) x2_ = x_;
+-          if (y_ > y2_) y2_ = y_;
+-          xs.push(x_);
+-          ys.push(y_);
++    function squarify(node) {
++      var children = node.children;
++      if (children && children.length) {
++        var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
++        scale(remaining, rect.dx * rect.dy / node.value);
++        row.area = 0;
++        while ((n = remaining.length) > 0) {
++          row.push(child = remaining[n - 1]);
++          row.area += child.area;
++          if (mode !== "squarify" || (score = worst(row, u)) <= best) {
++            remaining.pop();
++            best = score;
++          } else {
++            row.area -= row.pop().area;
++            position(row, u, rect, false);
++            u = Math.min(rect.dx, rect.dy);
++            row.length = row.area = 0;
++            best = Infinity;
++          }
++        }
++        if (row.length) {
++          position(row, u, rect, true);
++          row.length = row.area = 0;
+         }
++        children.forEach(squarify);
+       }
+-      var dx = x2_ - x1_, dy = y2_ - y1_;
+-      if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
+-      function insert(n, d, x, y, x1, y1, x2, y2) {
+-        if (isNaN(x) || isNaN(y)) return;
+-        if (n.leaf) {
+-          var nx = n.x, ny = n.y;
+-          if (nx != null) {
+-            if (abs(nx - x) + abs(ny - y) < .01) {
+-              insertChild(n, d, x, y, x1, y1, x2, y2);
+-            } else {
+-              var nPoint = n.point;
+-              n.x = n.y = n.point = null;
+-              insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
+-              insertChild(n, d, x, y, x1, y1, x2, y2);
+-            }
+-          } else {
+-            n.x = x, n.y = y, n.point = d;
++    }
++    function stickify(node) {
++      var children = node.children;
++      if (children && children.length) {
++        var rect = pad(node), remaining = children.slice(), child, row = [];
++        scale(remaining, rect.dx * rect.dy / node.value);
++        row.area = 0;
++        while (child = remaining.pop()) {
++          row.push(child);
++          row.area += child.area;
++          if (child.z != null) {
++            position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
++            row.length = row.area = 0;
+           }
+-        } else {
+-          insertChild(n, d, x, y, x1, y1, x2, y2);
+         }
++        children.forEach(stickify);
+       }
+-      function insertChild(n, d, x, y, x1, y1, x2, y2) {
+-        var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
+-        n.leaf = false;
+-        n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
+-        if (right) x1 = xm; else x2 = xm;
+-        if (below) y1 = ym; else y2 = ym;
+-        insert(n, d, x, y, x1, y1, x2, y2);
++    }
++    function worst(row, u) {
++      var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
++      while (++i < n) {
++        if (!(r = row[i].area)) continue;
++        if (r < rmin) rmin = r;
++        if (r > rmax) rmax = r;
+       }
+-      var root = d3_geom_quadtreeNode();
+-      root.add = function(d) {
+-        insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
+-      };
+-      root.visit = function(f) {
+-        d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
+-      };
+-      root.find = function(point) {
+-        return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
+-      };
+-      i = -1;
+-      if (x1 == null) {
++      s *= s;
++      u *= u;
++      return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
++    }
++    function position(row, u, rect, flush) {
++      var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
++      if (u == rect.dx) {
++        if (flush || v > rect.dy) v = rect.dy;
+         while (++i < n) {
+-          insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
++          o = row[i];
++          o.x = x;
++          o.y = y;
++          o.dy = v;
++          x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
+         }
+-        --i;
+-      } else data.forEach(root.add);
+-      xs = ys = data = d = null;
+-      return root;
++        o.z = true;
++        o.dx += rect.x + rect.dx - x;
++        rect.y += v;
++        rect.dy -= v;
++      } else {
++        if (flush || v > rect.dx) v = rect.dx;
++        while (++i < n) {
++          o = row[i];
++          o.x = x;
++          o.y = y;
++          o.dx = v;
++          y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
++        }
++        o.z = false;
++        o.dy += rect.y + rect.dy - y;
++        rect.x += v;
++        rect.dx -= v;
++      }
+     }
+-    quadtree.x = function(_) {
+-      return arguments.length ? (x = _, quadtree) : x;
++    function treemap(d) {
++      var nodes = stickies || hierarchy(d), root = nodes[0];
++      root.x = root.y = 0;
++      if (root.value) root.dx = size[0], root.dy = size[1]; else root.dx = root.dy = 0;
++      if (stickies) hierarchy.revalue(root);
++      scale([ root ], root.dx * root.dy / root.value);
++      (stickies ? stickify : squarify)(root);
++      if (sticky) stickies = nodes;
++      return nodes;
++    }
++    treemap.size = function(x) {
++      if (!arguments.length) return size;
++      size = x;
++      return treemap;
++    };
++    treemap.padding = function(x) {
++      if (!arguments.length) return padding;
++      function padFunction(node) {
++        var p = x.call(treemap, node, node.depth);
++        return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
++      }
++      function padConstant(node) {
++        return d3_layout_treemapPad(node, x);
++      }
++      var type;
++      pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ], 
++      padConstant) : padConstant;
++      return treemap;
+     };
+-    quadtree.y = function(_) {
+-      return arguments.length ? (y = _, quadtree) : y;
++    treemap.round = function(x) {
++      if (!arguments.length) return round != Number;
++      round = x ? Math.round : Number;
++      return treemap;
+     };
+-    quadtree.extent = function(_) {
+-      if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
+-      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0], 
+-      y2 = +_[1][1];
+-      return quadtree;
++    treemap.sticky = function(x) {
++      if (!arguments.length) return sticky;
++      sticky = x;
++      stickies = null;
++      return treemap;
+     };
+-    quadtree.size = function(_) {
+-      if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
+-      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
+-      return quadtree;
++    treemap.ratio = function(x) {
++      if (!arguments.length) return ratio;
++      ratio = x;
++      return treemap;
+     };
+-    return quadtree;
++    treemap.mode = function(x) {
++      if (!arguments.length) return mode;
++      mode = x + "";
++      return treemap;
++    };
++    return d3_layout_hierarchyRebind(treemap, hierarchy);
+   };
+-  function d3_geom_quadtreeCompatX(d) {
+-    return d.x;
+-  }
+-  function d3_geom_quadtreeCompatY(d) {
+-    return d.y;
++  function d3_layout_treemapPadNull(node) {
++    return {
++      x: node.x,
++      y: node.y,
++      dx: node.dx,
++      dy: node.dy
++    };
+   }
+-  function d3_geom_quadtreeNode() {
++  function d3_layout_treemapPad(node, padding) {
++    var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
++    if (dx < 0) {
++      x += dx / 2;
++      dx = 0;
++    }
++    if (dy < 0) {
++      y += dy / 2;
++      dy = 0;
++    }
+     return {
+-      leaf: true,
+-      nodes: [],
+-      point: null,
+-      x: null,
+-      y: null
++      x: x,
++      y: y,
++      dx: dx,
++      dy: dy
+     };
+   }
+-  function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
+-    if (!f(node, x1, y1, x2, y2)) {
+-      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
+-      if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
+-      if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
+-      if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
+-      if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
++  d3.random = {
++    normal: function(µ, σ) {
++      var n = arguments.length;
++      if (n < 2) σ = 1;
++      if (n < 1) µ = 0;
++      return function() {
++        var x, y, r;
++        do {
++          x = Math.random() * 2 - 1;
++          y = Math.random() * 2 - 1;
++          r = x * x + y * y;
++        } while (!r || r > 1);
++        return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
++      };
++    },
++    logNormal: function() {
++      var random = d3.random.normal.apply(d3, arguments);
++      return function() {
++        return Math.exp(random());
++      };
++    },
++    bates: function(m) {
++      var random = d3.random.irwinHall(m);
++      return function() {
++        return random() / m;
++      };
++    },
++    irwinHall: function(m) {
++      return function() {
++        for (var s = 0, j = 0; j < m; j++) s += Math.random();
++        return s;
++      };
+     }
++  };
++  d3.scale = {};
++  function d3_scaleExtent(domain) {
++    var start = domain[0], stop = domain[domain.length - 1];
++    return start < stop ? [ start, stop ] : [ stop, start ];
+   }
+-  function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
+-    var minDistance2 = Infinity, closestPoint;
+-    (function find(node, x1, y1, x2, y2) {
+-      if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
+-      if (point = node.point) {
+-        var point, dx = x - node.x, dy = y - node.y, distance2 = dx * dx + dy * dy;
+-        if (distance2 < minDistance2) {
+-          var distance = Math.sqrt(minDistance2 = distance2);
+-          x0 = x - distance, y0 = y - distance;
+-          x3 = x + distance, y3 = y + distance;
+-          closestPoint = point;
+-        }
+-      }
+-      var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
+-      for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
+-        if (node = children[i & 3]) switch (i & 3) {
+-         case 0:
+-          find(node, x1, y1, xm, ym);
+-          break;
+-
+-         case 1:
+-          find(node, xm, y1, x2, ym);
+-          break;
+-
+-         case 2:
+-          find(node, x1, ym, xm, y2);
+-          break;
+-
+-         case 3:
+-          find(node, xm, ym, x2, y2);
+-          break;
+-        }
+-      }
+-    })(root, x0, y0, x3, y3);
+-    return closestPoint;
++  function d3_scaleRange(scale) {
++    return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
+   }
+-  d3.interpolateRgb = d3_interpolateRgb;
+-  function d3_interpolateRgb(a, b) {
+-    a = d3.rgb(a);
+-    b = d3.rgb(b);
+-    var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
+-    return function(t) {
+-      return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
++  function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
++    var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
++    return function(x) {
++      return i(u(x));
+     };
+   }
+-  d3.interpolateObject = d3_interpolateObject;
+-  function d3_interpolateObject(a, b) {
+-    var i = {}, c = {}, k;
+-    for (k in a) {
+-      if (k in b) {
+-        i[k] = d3_interpolate(a[k], b[k]);
+-      } else {
+-        c[k] = a[k];
+-      }
+-    }
+-    for (k in b) {
+-      if (!(k in a)) {
+-        c[k] = b[k];
+-      }
++  function d3_scale_nice(domain, nice) {
++    var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
++    if (x1 < x0) {
++      dx = i0, i0 = i1, i1 = dx;
++      dx = x0, x0 = x1, x1 = dx;
+     }
+-    return function(t) {
+-      for (k in i) c[k] = i[k](t);
+-      return c;
+-    };
+-  }
+-  d3.interpolateNumber = d3_interpolateNumber;
+-  function d3_interpolateNumber(a, b) {
+-    a = +a, b = +b;
+-    return function(t) {
+-      return a * (1 - t) + b * t;
+-    };
++    domain[i0] = nice.floor(x0);
++    domain[i1] = nice.ceil(x1);
++    return domain;
+   }
+-  d3.interpolateString = d3_interpolateString;
+-  function d3_interpolateString(a, b) {
+-    var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
+-    a = a + "", b = b + "";
+-    while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
+-      if ((bs = bm.index) > bi) {
+-        bs = b.slice(bi, bs);
+-        if (s[i]) s[i] += bs; else s[++i] = bs;
+-      }
+-      if ((am = am[0]) === (bm = bm[0])) {
+-        if (s[i]) s[i] += bm; else s[++i] = bm;
+-      } else {
+-        s[++i] = null;
+-        q.push({
+-          i: i,
+-          x: d3_interpolateNumber(am, bm)
+-        });
++  function d3_scale_niceStep(step) {
++    return step ? {
++      floor: function(x) {
++        return Math.floor(x / step) * step;
++      },
++      ceil: function(x) {
++        return Math.ceil(x / step) * step;
+       }
+-      bi = d3_interpolate_numberB.lastIndex;
++    } : d3_scale_niceIdentity;
++  }
++  var d3_scale_niceIdentity = {
++    floor: d3_identity,
++    ceil: d3_identity
++  };
++  function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
++    var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
++    if (domain[k] < domain[0]) {
++      domain = domain.slice().reverse();
++      range = range.slice().reverse();
+     }
+-    if (bi < b.length) {
+-      bs = b.slice(bi);
+-      if (s[i]) s[i] += bs; else s[++i] = bs;
++    while (++j <= k) {
++      u.push(uninterpolate(domain[j - 1], domain[j]));
++      i.push(interpolate(range[j - 1], range[j]));
+     }
+-    return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
+-      return b(t) + "";
+-    }) : function() {
+-      return b;
+-    } : (b = q.length, function(t) {
+-      for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
+-      return s.join("");
+-    });
+-  }
+-  var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
+-  d3.interpolate = d3_interpolate;
+-  function d3_interpolate(a, b) {
+-    var i = d3.interpolators.length, f;
+-    while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
+-    return f;
+-  }
+-  d3.interpolators = [ function(a, b) {
+-    var t = typeof b;
+-    return (t === "string" ? d3_rgb_names.has(b.toLowerCase()) || /^(#|rgb\(|hsl\()/i.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
+-  } ];
+-  d3.interpolateArray = d3_interpolateArray;
+-  function d3_interpolateArray(a, b) {
+-    var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
+-    for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
+-    for (;i < na; ++i) c[i] = a[i];
+-    for (;i < nb; ++i) c[i] = b[i];
+-    return function(t) {
+-      for (i = 0; i < n0; ++i) c[i] = x[i](t);
+-      return c;
++    return function(x) {
++      var j = d3.bisect(domain, x, 1, k) - 1;
++      return i[j](u[j](x));
+     };
+   }
+-  var d3_ease_default = function() {
+-    return d3_identity;
++  d3.scale.linear = function() {
++    return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
+   };
+-  var d3_ease = d3.map({
+-    linear: d3_ease_default,
+-    poly: d3_ease_poly,
+-    quad: function() {
+-      return d3_ease_quad;
+-    },
+-    cubic: function() {
+-      return d3_ease_cubic;
+-    },
+-    sin: function() {
+-      return d3_ease_sin;
+-    },
+-    exp: function() {
+-      return d3_ease_exp;
+-    },
+-    circle: function() {
+-      return d3_ease_circle;
+-    },
+-    elastic: d3_ease_elastic,
+-    back: d3_ease_back,
+-    bounce: function() {
+-      return d3_ease_bounce;
++  function d3_scale_linear(domain, range, interpolate, clamp) {
++    var output, input;
++    function rescale() {
++      var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
++      output = linear(domain, range, uninterpolate, interpolate);
++      input = linear(range, domain, uninterpolate, d3_interpolate);
++      return scale;
+     }
+-  });
+-  var d3_ease_mode = d3.map({
+-    "in": d3_identity,
+-    out: d3_ease_reverse,
+-    "in-out": d3_ease_reflect,
+-    "out-in": function(f) {
+-      return d3_ease_reflect(d3_ease_reverse(f));
++    function scale(x) {
++      return output(x);
+     }
+-  });
+-  d3.ease = function(name) {
+-    var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
+-    t = d3_ease.get(t) || d3_ease_default;
+-    m = d3_ease_mode.get(m) || d3_identity;
+-    return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
+-  };
+-  function d3_ease_clamp(f) {
+-    return function(t) {
+-      return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
++    scale.invert = function(y) {
++      return input(y);
+     };
+-  }
+-  function d3_ease_reverse(f) {
+-    return function(t) {
+-      return 1 - f(1 - t);
++    scale.domain = function(x) {
++      if (!arguments.length) return domain;
++      domain = x.map(Number);
++      return rescale();
+     };
+-  }
+-  function d3_ease_reflect(f) {
+-    return function(t) {
+-      return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
++    scale.range = function(x) {
++      if (!arguments.length) return range;
++      range = x;
++      return rescale();
+     };
+-  }
+-  function d3_ease_quad(t) {
+-    return t * t;
+-  }
+-  function d3_ease_cubic(t) {
+-    return t * t * t;
+-  }
+-  function d3_ease_cubicInOut(t) {
+-    if (t <= 0) return 0;
+-    if (t >= 1) return 1;
+-    var t2 = t * t, t3 = t2 * t;
+-    return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
+-  }
+-  function d3_ease_poly(e) {
+-    return function(t) {
+-      return Math.pow(t, e);
++    scale.rangeRound = function(x) {
++      return scale.range(x).interpolate(d3_interpolateRound);
+     };
+-  }
+-  function d3_ease_sin(t) {
+-    return 1 - Math.cos(t * halfπ);
+-  }
+-  function d3_ease_exp(t) {
+-    return Math.pow(2, 10 * (t - 1));
+-  }
+-  function d3_ease_circle(t) {
+-    return 1 - Math.sqrt(1 - t * t);
+-  }
+-  function d3_ease_elastic(a, p) {
+-    var s;
+-    if (arguments.length < 2) p = .45;
+-    if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
+-    return function(t) {
+-      return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
++    scale.clamp = function(x) {
++      if (!arguments.length) return clamp;
++      clamp = x;
++      return rescale();
+     };
+-  }
+-  function d3_ease_back(s) {
+-    if (!s) s = 1.70158;
+-    return function(t) {
+-      return t * t * ((s + 1) * t - s);
++    scale.interpolate = function(x) {
++      if (!arguments.length) return interpolate;
++      interpolate = x;
++      return rescale();
+     };
+-  }
+-  function d3_ease_bounce(t) {
+-    return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
+-  }
+-  d3.interpolateHcl = d3_interpolateHcl;
+-  function d3_interpolateHcl(a, b) {
+-    a = d3.hcl(a);
+-    b = d3.hcl(b);
+-    var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
+-    if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
+-    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
+-    return function(t) {
+-      return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
++    scale.ticks = function(m) {
++      return d3_scale_linearTicks(domain, m);
+     };
+-  }
+-  d3.interpolateHsl = d3_interpolateHsl;
+-  function d3_interpolateHsl(a, b) {
+-    a = d3.hsl(a);
+-    b = d3.hsl(b);
+-    var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
+-    if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
+-    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
+-    return function(t) {
+-      return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
++    scale.tickFormat = function(m, format) {
++      return d3_scale_linearTickFormat(domain, m, format);
+     };
+-  }
+-  d3.interpolateLab = d3_interpolateLab;
+-  function d3_interpolateLab(a, b) {
+-    a = d3.lab(a);
+-    b = d3.lab(b);
+-    var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
+-    return function(t) {
+-      return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
++    scale.nice = function(m) {
++      d3_scale_linearNice(domain, m);
++      return rescale();
+     };
+-  }
+-  d3.interpolateRound = d3_interpolateRound;
+-  function d3_interpolateRound(a, b) {
+-    b -= a;
+-    return function(t) {
+-      return Math.round(a + b * t);
++    scale.copy = function() {
++      return d3_scale_linear(domain, range, interpolate, clamp);
+     };
++    return rescale();
+   }
+-  d3.transform = function(string) {
+-    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
+-    return (d3.transform = function(string) {
+-      if (string != null) {
+-        g.setAttribute("transform", string);
+-        var t = g.transform.baseVal.consolidate();
+-      }
+-      return new d3_transform(t ? t.matrix : d3_transformIdentity);
+-    })(string);
+-  };
+-  function d3_transform(m) {
+-    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
+-    if (r0[0] * r1[1] < r1[0] * r0[1]) {
+-      r0[0] *= -1;
+-      r0[1] *= -1;
+-      kx *= -1;
+-      kz *= -1;
+-    }
+-    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
+-    this.translate = [ m.e, m.f ];
+-    this.scale = [ kx, ky ];
+-    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
++  function d3_scale_linearRebind(scale, linear) {
++    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
+   }
+-  d3_transform.prototype.toString = function() {
+-    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
+-  };
+-  function d3_transformDot(a, b) {
+-    return a[0] * b[0] + a[1] * b[1];
++  function d3_scale_linearNice(domain, m) {
++    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
++    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
++    return domain;
+   }
+-  function d3_transformNormalize(a) {
+-    var k = Math.sqrt(d3_transformDot(a, a));
+-    if (k) {
+-      a[0] /= k;
+-      a[1] /= k;
+-    }
+-    return k;
++  function d3_scale_linearTickRange(domain, m) {
++    if (m == null) m = 10;
++    var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
++    if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
++    extent[0] = Math.ceil(extent[0] / step) * step;
++    extent[1] = Math.floor(extent[1] / step) * step + step * .5;
++    extent[2] = step;
++    return extent;
+   }
+-  function d3_transformCombine(a, b, k) {
+-    a[0] += k * b[0];
+-    a[1] += k * b[1];
+-    return a;
++  function d3_scale_linearTicks(domain, m) {
++    return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
++  }
++  function d3_scale_linearTickFormat(domain, m, format) {
++    var range = d3_scale_linearTickRange(domain, m);
++    if (format) {
++      var match = d3_format_re.exec(format);
++      match.shift();
++      if (match[8] === "s") {
++        var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
++        if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
++        match[8] = "f";
++        format = d3.format(match.join(""));
++        return function(d) {
++          return format(prefix.scale(d)) + prefix.symbol;
++        };
++      }
++      if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
++      format = match.join("");
++    } else {
++      format = ",." + d3_scale_linearPrecision(range[2]) + "f";
++    }
++    return d3.format(format);
+   }
+-  var d3_transformIdentity = {
+-    a: 1,
+-    b: 0,
+-    c: 0,
+-    d: 1,
+-    e: 0,
+-    f: 0
++  var d3_scale_linearFormatSignificant = {
++    s: 1,
++    g: 1,
++    p: 1,
++    r: 1,
++    e: 1
+   };
+-  d3.interpolateTransform = d3_interpolateTransform;
+-  function d3_interpolateTransformPop(s) {
+-    return s.length ? s.pop() + "," : "";
++  function d3_scale_linearPrecision(value) {
++    return -Math.floor(Math.log(value) / Math.LN10 + .01);
+   }
+-  function d3_interpolateTranslate(ta, tb, s, q) {
+-    if (ta[0] !== tb[0] || ta[1] !== tb[1]) {
+-      var i = s.push("translate(", null, ",", null, ")");
+-      q.push({
+-        i: i - 4,
+-        x: d3_interpolateNumber(ta[0], tb[0])
+-      }, {
+-        i: i - 2,
+-        x: d3_interpolateNumber(ta[1], tb[1])
+-      });
+-    } else if (tb[0] || tb[1]) {
+-      s.push("translate(" + tb + ")");
+-    }
++  function d3_scale_linearFormatPrecision(type, range) {
++    var p = d3_scale_linearPrecision(range[2]);
++    return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
+   }
+-  function d3_interpolateRotate(ra, rb, s, q) {
+-    if (ra !== rb) {
+-      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
+-      q.push({
+-        i: s.push(d3_interpolateTransformPop(s) + "rotate(", null, ")") - 2,
+-        x: d3_interpolateNumber(ra, rb)
+-      });
+-    } else if (rb) {
+-      s.push(d3_interpolateTransformPop(s) + "rotate(" + rb + ")");
++  d3.scale.log = function() {
++    return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
++  };
++  function d3_scale_log(linear, base, positive, domain) {
++    function log(x) {
++      return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
+     }
+-  }
+-  function d3_interpolateSkew(wa, wb, s, q) {
+-    if (wa !== wb) {
+-      q.push({
+-        i: s.push(d3_interpolateTransformPop(s) + "skewX(", null, ")") - 2,
+-        x: d3_interpolateNumber(wa, wb)
+-      });
+-    } else if (wb) {
+-      s.push(d3_interpolateTransformPop(s) + "skewX(" + wb + ")");
++    function pow(x) {
++      return positive ? Math.pow(base, x) : -Math.pow(base, -x);
+     }
+-  }
+-  function d3_interpolateScale(ka, kb, s, q) {
+-    if (ka[0] !== kb[0] || ka[1] !== kb[1]) {
+-      var i = s.push(d3_interpolateTransformPop(s) + "scale(", null, ",", null, ")");
+-      q.push({
+-        i: i - 4,
+-        x: d3_interpolateNumber(ka[0], kb[0])
+-      }, {
+-        i: i - 2,
+-        x: d3_interpolateNumber(ka[1], kb[1])
+-      });
+-    } else if (kb[0] !== 1 || kb[1] !== 1) {
+-      s.push(d3_interpolateTransformPop(s) + "scale(" + kb + ")");
++    function scale(x) {
++      return linear(log(x));
+     }
+-  }
+-  function d3_interpolateTransform(a, b) {
+-    var s = [], q = [];
+-    a = d3.transform(a), b = d3.transform(b);
+-    d3_interpolateTranslate(a.translate, b.translate, s, q);
+-    d3_interpolateRotate(a.rotate, b.rotate, s, q);
+-    d3_interpolateSkew(a.skew, b.skew, s, q);
+-    d3_interpolateScale(a.scale, b.scale, s, q);
+-    a = b = null;
+-    return function(t) {
+-      var i = -1, n = q.length, o;
+-      while (++i < n) s[(o = q[i]).i] = o.x(t);
+-      return s.join("");
++    scale.invert = function(x) {
++      return pow(linear.invert(x));
+     };
+-  }
+-  function d3_uninterpolateNumber(a, b) {
+-    b = (b -= a = +a) || 1 / b;
+-    return function(x) {
+-      return (x - a) / b;
++    scale.domain = function(x) {
++      if (!arguments.length) return domain;
++      positive = x[0] >= 0;
++      linear.domain((domain = x.map(Number)).map(log));
++      return scale;
+     };
+-  }
+-  function d3_uninterpolateClamp(a, b) {
+-    b = (b -= a = +a) || 1 / b;
+-    return function(x) {
+-      return Math.max(0, Math.min(1, (x - a) / b));
++    scale.base = function(_) {
++      if (!arguments.length) return base;
++      base = +_;
++      linear.domain(domain.map(log));
++      return scale;
+     };
+-  }
+-  d3.layout = {};
+-  d3.layout.bundle = function() {
+-    return function(links) {
+-      var paths = [], i = -1, n = links.length;
+-      while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
+-      return paths;
++    scale.nice = function() {
++      var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
++      linear.domain(niced);
++      domain = niced.map(pow);
++      return scale;
+     };
+-  };
+-  function d3_layout_bundlePath(link) {
+-    var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
+-    while (start !== lca) {
+-      start = start.parent;
+-      points.push(start);
+-    }
+-    var k = points.length;
+-    while (end !== lca) {
+-      points.splice(k, 0, end);
+-      end = end.parent;
+-    }
+-    return points;
+-  }
+-  function d3_layout_bundleAncestors(node) {
+-    var ancestors = [], parent = node.parent;
+-    while (parent != null) {
+-      ancestors.push(node);
+-      node = parent;
+-      parent = parent.parent;
+-    }
+-    ancestors.push(node);
+-    return ancestors;
+-  }
+-  function d3_layout_bundleLeastCommonAncestor(a, b) {
+-    if (a === b) return a;
+-    var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
+-    while (aNode === bNode) {
+-      sharedNode = aNode;
+-      aNode = aNodes.pop();
+-      bNode = bNodes.pop();
+-    }
+-    return sharedNode;
+-  }
+-  d3.layout.chord = function() {
+-    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
+-    function relayout() {
+-      var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
+-      chords = [];
+-      groups = [];
+-      k = 0, i = -1;
+-      while (++i < n) {
+-        x = 0, j = -1;
+-        while (++j < n) {
+-          x += matrix[i][j];
+-        }
+-        groupSums.push(x);
+-        subgroupIndex.push(d3.range(n));
+-        k += x;
+-      }
+-      if (sortGroups) {
+-        groupIndex.sort(function(a, b) {
+-          return sortGroups(groupSums[a], groupSums[b]);
+-        });
+-      }
+-      if (sortSubgroups) {
+-        subgroupIndex.forEach(function(d, i) {
+-          d.sort(function(a, b) {
+-            return sortSubgroups(matrix[i][a], matrix[i][b]);
+-          });
+-        });
+-      }
+-      k = (τ - padding * n) / k;
+-      x = 0, i = -1;
+-      while (++i < n) {
+-        x0 = x, j = -1;
+-        while (++j < n) {
+-          var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
+-          subgroups[di + "-" + dj] = {
+-            index: di,
+-            subindex: dj,
+-            startAngle: a0,
+-            endAngle: a1,
+-            value: v
+-          };
+-        }
+-        groups[di] = {
+-          index: di,
+-          startAngle: x0,
+-          endAngle: x,
+-          value: groupSums[di]
+-        };
+-        x += padding;
+-      }
+-      i = -1;
+-      while (++i < n) {
+-        j = i - 1;
+-        while (++j < n) {
+-          var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
+-          if (source.value || target.value) {
+-            chords.push(source.value < target.value ? {
+-              source: target,
+-              target: source
+-            } : {
+-              source: source,
+-              target: target
+-            });
+-          }
++    scale.ticks = function() {
++      var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
++      if (isFinite(j - i)) {
++        if (positive) {
++          for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
++          ticks.push(pow(i));
++        } else {
++          ticks.push(pow(i));
++          for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
+         }
++        for (i = 0; ticks[i] < u; i++) {}
++        for (j = ticks.length; ticks[j - 1] > v; j--) {}
++        ticks = ticks.slice(i, j);
+       }
+-      if (sortChords) resort();
++      return ticks;
++    };
++    scale.tickFormat = function(n, format) {
++      if (!arguments.length) return d3_scale_logFormat;
++      if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
++      var k = Math.max(1, base * n / scale.ticks().length);
++      return function(d) {
++        var i = d / pow(Math.round(log(d)));
++        if (i * base < base - .5) i *= base;
++        return i <= k ? format(d) : "";
++      };
++    };
++    scale.copy = function() {
++      return d3_scale_log(linear.copy(), base, positive, domain);
++    };
++    return d3_scale_linearRebind(scale, linear);
++  }
++  var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
++    floor: function(x) {
++      return -Math.ceil(-x);
++    },
++    ceil: function(x) {
++      return -Math.floor(-x);
+     }
+-    function resort() {
+-      chords.sort(function(a, b) {
+-        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
+-      });
++  };
++  d3.scale.pow = function() {
++    return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
++  };
++  function d3_scale_pow(linear, exponent, domain) {
++    var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
++    function scale(x) {
++      return linear(powp(x));
+     }
+-    chord.matrix = function(x) {
+-      if (!arguments.length) return matrix;
+-      n = (matrix = x) && matrix.length;
+-      chords = groups = null;
+-      return chord;
++    scale.invert = function(x) {
++      return powb(linear.invert(x));
+     };
+-    chord.padding = function(x) {
+-      if (!arguments.length) return padding;
+-      padding = x;
+-      chords = groups = null;
+-      return chord;
++    scale.domain = function(x) {
++      if (!arguments.length) return domain;
++      linear.domain((domain = x.map(Number)).map(powp));
++      return scale;
+     };
+-    chord.sortGroups = function(x) {
+-      if (!arguments.length) return sortGroups;
+-      sortGroups = x;
+-      chords = groups = null;
+-      return chord;
++    scale.ticks = function(m) {
++      return d3_scale_linearTicks(domain, m);
+     };
+-    chord.sortSubgroups = function(x) {
+-      if (!arguments.length) return sortSubgroups;
+-      sortSubgroups = x;
+-      chords = null;
+-      return chord;
++    scale.tickFormat = function(m, format) {
++      return d3_scale_linearTickFormat(domain, m, format);
+     };
+-    chord.sortChords = function(x) {
+-      if (!arguments.length) return sortChords;
+-      sortChords = x;
+-      if (chords) resort();
+-      return chord;
++    scale.nice = function(m) {
++      return scale.domain(d3_scale_linearNice(domain, m));
+     };
+-    chord.chords = function() {
+-      if (!chords) relayout();
+-      return chords;
++    scale.exponent = function(x) {
++      if (!arguments.length) return exponent;
++      powp = d3_scale_powPow(exponent = x);
++      powb = d3_scale_powPow(1 / exponent);
++      linear.domain(domain.map(powp));
++      return scale;
+     };
+-    chord.groups = function() {
+-      if (!groups) relayout();
+-      return groups;
++    scale.copy = function() {
++      return d3_scale_pow(linear.copy(), exponent, domain);
+     };
+-    return chord;
++    return d3_scale_linearRebind(scale, linear);
++  }
++  function d3_scale_powPow(e) {
++    return function(x) {
++      return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
++    };
++  }
++  d3.scale.sqrt = function() {
++    return d3.scale.pow().exponent(.5);
+   };
+-  d3.layout.force = function() {
+-    var force = {}, event = d3.dispatch("start", "tick", "end"), timer, size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
+-    function repulse(node) {
+-      return function(quad, x1, _, x2) {
+-        if (quad.point !== node) {
+-          var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
+-          if (dw * dw / theta2 < dn) {
+-            if (dn < chargeDistance2) {
+-              var k = quad.charge / dn;
+-              node.px -= dx * k;
+-              node.py -= dy * k;
+-            }
+-            return true;
+-          }
+-          if (quad.point && dn && dn < chargeDistance2) {
+-            var k = quad.pointCharge / dn;
+-            node.px -= dx * k;
+-            node.py -= dy * k;
+-          }
+-        }
+-        return !quad.charge;
+-      };
++  d3.scale.ordinal = function() {
++    return d3_scale_ordinal([], {
++      t: "range",
++      a: [ [] ]
++    });
++  };
++  function d3_scale_ordinal(domain, ranger) {
++    var index, range, rangeBand;
++    function scale(x) {
++      return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
+     }
+-    force.tick = function() {
+-      if ((alpha *= .99) < .005) {
+-        timer = null;
+-        event.end({
+-          type: "end",
+-          alpha: alpha = 0
+-        });
+-        return true;
+-      }
+-      var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
+-      for (i = 0; i < m; ++i) {
+-        o = links[i];
+-        s = o.source;
+-        t = o.target;
+-        x = t.x - s.x;
+-        y = t.y - s.y;
+-        if (l = x * x + y * y) {
+-          l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
+-          x *= l;
+-          y *= l;
+-          t.x -= x * (k = s.weight + t.weight ? s.weight / (s.weight + t.weight) : .5);
+-          t.y -= y * k;
+-          s.x += x * (k = 1 - k);
+-          s.y += y * k;
+-        }
+-      }
+-      if (k = alpha * gravity) {
+-        x = size[0] / 2;
+-        y = size[1] / 2;
+-        i = -1;
+-        if (k) while (++i < n) {
+-          o = nodes[i];
+-          o.x += (x - o.x) * k;
+-          o.y += (y - o.y) * k;
+-        }
+-      }
+-      if (charge) {
+-        d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
+-        i = -1;
+-        while (++i < n) {
+-          if (!(o = nodes[i]).fixed) {
+-            q.visit(repulse(o));
+-          }
+-        }
+-      }
+-      i = -1;
+-      while (++i < n) {
+-        o = nodes[i];
+-        if (o.fixed) {
+-          o.x = o.px;
+-          o.y = o.py;
+-        } else {
+-          o.x -= (o.px - (o.px = o.x)) * friction;
+-          o.y -= (o.py - (o.py = o.y)) * friction;
+-        }
+-      }
+-      event.tick({
+-        type: "tick",
+-        alpha: alpha
++    function steps(start, step) {
++      return d3.range(domain.length).map(function(i) {
++        return start + step * i;
+       });
++    }
++    scale.domain = function(x) {
++      if (!arguments.length) return domain;
++      domain = [];
++      index = new d3_Map();
++      var i = -1, n = x.length, xi;
++      while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
++      return scale[ranger.t].apply(scale, ranger.a);
+     };
+-    force.nodes = function(x) {
+-      if (!arguments.length) return nodes;
+-      nodes = x;
+-      return force;
+-    };
+-    force.links = function(x) {
+-      if (!arguments.length) return links;
+-      links = x;
+-      return force;
+-    };
+-    force.size = function(x) {
+-      if (!arguments.length) return size;
+-      size = x;
+-      return force;
++    scale.range = function(x) {
++      if (!arguments.length) return range;
++      range = x;
++      rangeBand = 0;
++      ranger = {
++        t: "range",
++        a: arguments
++      };
++      return scale;
+     };
+-    force.linkDistance = function(x) {
+-      if (!arguments.length) return linkDistance;
+-      linkDistance = typeof x === "function" ? x : +x;
+-      return force;
++    scale.rangePoints = function(x, padding) {
++      if (arguments.length < 2) padding = 0;
++      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2, 
++      0) : (stop - start) / (domain.length - 1 + padding);
++      range = steps(start + step * padding / 2, step);
++      rangeBand = 0;
++      ranger = {
++        t: "rangePoints",
++        a: arguments
++      };
++      return scale;
+     };
+-    force.distance = force.linkDistance;
+-    force.linkStrength = function(x) {
+-      if (!arguments.length) return linkStrength;
+-      linkStrength = typeof x === "function" ? x : +x;
+-      return force;
++    scale.rangeRoundPoints = function(x, padding) {
++      if (arguments.length < 2) padding = 0;
++      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2), 
++      0) : (stop - start) / (domain.length - 1 + padding) | 0;
++      range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
++      rangeBand = 0;
++      ranger = {
++        t: "rangeRoundPoints",
++        a: arguments
++      };
++      return scale;
+     };
+-    force.friction = function(x) {
+-      if (!arguments.length) return friction;
+-      friction = +x;
+-      return force;
++    scale.rangeBands = function(x, padding, outerPadding) {
++      if (arguments.length < 2) padding = 0;
++      if (arguments.length < 3) outerPadding = padding;
++      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
++      range = steps(start + step * outerPadding, step);
++      if (reverse) range.reverse();
++      rangeBand = step * (1 - padding);
++      ranger = {
++        t: "rangeBands",
++        a: arguments
++      };
++      return scale;
+     };
+-    force.charge = function(x) {
+-      if (!arguments.length) return charge;
+-      charge = typeof x === "function" ? x : +x;
+-      return force;
++    scale.rangeRoundBands = function(x, padding, outerPadding) {
++      if (arguments.length < 2) padding = 0;
++      if (arguments.length < 3) outerPadding = padding;
++      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
++      range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
++      if (reverse) range.reverse();
++      rangeBand = Math.round(step * (1 - padding));
++      ranger = {
++        t: "rangeRoundBands",
++        a: arguments
++      };
++      return scale;
+     };
+-    force.chargeDistance = function(x) {
+-      if (!arguments.length) return Math.sqrt(chargeDistance2);
+-      chargeDistance2 = x * x;
+-      return force;
++    scale.rangeBand = function() {
++      return rangeBand;
+     };
+-    force.gravity = function(x) {
+-      if (!arguments.length) return gravity;
+-      gravity = +x;
+-      return force;
++    scale.rangeExtent = function() {
++      return d3_scaleExtent(ranger.a[0]);
+     };
+-    force.theta = function(x) {
+-      if (!arguments.length) return Math.sqrt(theta2);
+-      theta2 = x * x;
+-      return force;
++    scale.copy = function() {
++      return d3_scale_ordinal(domain, ranger);
+     };
+-    force.alpha = function(x) {
+-      if (!arguments.length) return alpha;
+-      x = +x;
+-      if (alpha) {
+-        if (x > 0) {
+-          alpha = x;
+-        } else {
+-          timer.c = null, timer.t = NaN, timer = null;
+-          event.end({
+-            type: "end",
+-            alpha: alpha = 0
+-          });
+-        }
+-      } else if (x > 0) {
+-        event.start({
+-          type: "start",
+-          alpha: alpha = x
+-        });
+-        timer = d3_timer(force.tick);
+-      }
+-      return force;
++    return scale.domain(domain);
++  }
++  d3.scale.category10 = function() {
++    return d3.scale.ordinal().range(d3_category10);
++  };
++  d3.scale.category20 = function() {
++    return d3.scale.ordinal().range(d3_category20);
++  };
++  d3.scale.category20b = function() {
++    return d3.scale.ordinal().range(d3_category20b);
++  };
++  d3.scale.category20c = function() {
++    return d3.scale.ordinal().range(d3_category20c);
++  };
++  var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
++  var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
++  var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
++  var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
++  d3.scale.quantile = function() {
++    return d3_scale_quantile([], []);
++  };
++  function d3_scale_quantile(domain, range) {
++    var thresholds;
++    function rescale() {
++      var k = 0, q = range.length;
++      thresholds = [];
++      while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
++      return scale;
++    }
++    function scale(x) {
++      if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
++    }
++    scale.domain = function(x) {
++      if (!arguments.length) return domain;
++      domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
++      return rescale();
+     };
+-    force.start = function() {
+-      var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
+-      for (i = 0; i < n; ++i) {
+-        (o = nodes[i]).index = i;
+-        o.weight = 0;
+-      }
+-      for (i = 0; i < m; ++i) {
+-        o = links[i];
+-        if (typeof o.source == "number") o.source = nodes[o.source];
+-        if (typeof o.target == "number") o.target = nodes[o.target];
+-        ++o.source.weight;
+-        ++o.target.weight;
+-      }
+-      for (i = 0; i < n; ++i) {
+-        o = nodes[i];
+-        if (isNaN(o.x)) o.x = position("x", w);
+-        if (isNaN(o.y)) o.y = position("y", h);
+-        if (isNaN(o.px)) o.px = o.x;
+-        if (isNaN(o.py)) o.py = o.y;
+-      }
+-      distances = [];
+-      if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
+-      strengths = [];
+-      if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
+-      charges = [];
+-      if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
+-      function position(dimension, size) {
+-        if (!neighbors) {
+-          neighbors = new Array(n);
+-          for (j = 0; j < n; ++j) {
+-            neighbors[j] = [];
+-          }
+-          for (j = 0; j < m; ++j) {
+-            var o = links[j];
+-            neighbors[o.source.index].push(o.target);
+-            neighbors[o.target.index].push(o.source);
+-          }
+-        }
+-        var candidates = neighbors[i], j = -1, l = candidates.length, x;
+-        while (++j < l) if (!isNaN(x = candidates[j][dimension])) return x;
+-        return Math.random() * size;
+-      }
+-      return force.resume();
++    scale.range = function(x) {
++      if (!arguments.length) return range;
++      range = x;
++      return rescale();
+     };
+-    force.resume = function() {
+-      return force.alpha(.1);
++    scale.quantiles = function() {
++      return thresholds;
+     };
+-    force.stop = function() {
+-      return force.alpha(0);
++    scale.invertExtent = function(y) {
++      y = range.indexOf(y);
++      return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
+     };
+-    force.drag = function() {
+-      if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
+-      if (!arguments.length) return drag;
+-      this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
++    scale.copy = function() {
++      return d3_scale_quantile(domain, range);
+     };
+-    function dragmove(d) {
+-      d.px = d3.event.x, d.py = d3.event.y;
+-      force.resume();
+-    }
+-    return d3.rebind(force, event, "on");
+-  };
+-  function d3_layout_forceDragstart(d) {
+-    d.fixed |= 2;
+-  }
+-  function d3_layout_forceDragend(d) {
+-    d.fixed &= ~6;
+-  }
+-  function d3_layout_forceMouseover(d) {
+-    d.fixed |= 4;
+-    d.px = d.x, d.py = d.y;
+-  }
+-  function d3_layout_forceMouseout(d) {
+-    d.fixed &= ~4;
++    return rescale();
+   }
+-  function d3_layout_forceAccumulate(quad, alpha, charges) {
+-    var cx = 0, cy = 0;
+-    quad.charge = 0;
+-    if (!quad.leaf) {
+-      var nodes = quad.nodes, n = nodes.length, i = -1, c;
+-      while (++i < n) {
+-        c = nodes[i];
+-        if (c == null) continue;
+-        d3_layout_forceAccumulate(c, alpha, charges);
+-        quad.charge += c.charge;
+-        cx += c.charge * c.cx;
+-        cy += c.charge * c.cy;
+-      }
+-    }
+-    if (quad.point) {
+-      if (!quad.leaf) {
+-        quad.point.x += Math.random() - .5;
+-        quad.point.y += Math.random() - .5;
+-      }
+-      var k = alpha * charges[quad.point.index];
+-      quad.charge += quad.pointCharge = k;
+-      cx += k * quad.point.x;
+-      cy += k * quad.point.y;
++  d3.scale.quantize = function() {
++    return d3_scale_quantize(0, 1, [ 0, 1 ]);
++  };
++  function d3_scale_quantize(x0, x1, range) {
++    var kx, i;
++    function scale(x) {
++      return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
+     }
+-    quad.cx = cx / quad.charge;
+-    quad.cy = cy / quad.charge;
+-  }
+-  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
+-  d3.layout.hierarchy = function() {
+-    var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
+-    function hierarchy(root) {
+-      var stack = [ root ], nodes = [], node;
+-      root.depth = 0;
+-      while ((node = stack.pop()) != null) {
+-        nodes.push(node);
+-        if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
+-          var n, childs, child;
+-          while (--n >= 0) {
+-            stack.push(child = childs[n]);
+-            child.parent = node;
+-            child.depth = node.depth + 1;
+-          }
+-          if (value) node.value = 0;
+-          node.children = childs;
+-        } else {
+-          if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
+-          delete node.children;
+-        }
+-      }
+-      d3_layout_hierarchyVisitAfter(root, function(node) {
+-        var childs, parent;
+-        if (sort && (childs = node.children)) childs.sort(sort);
+-        if (value && (parent = node.parent)) parent.value += node.value;
+-      });
+-      return nodes;
++    function rescale() {
++      kx = range.length / (x1 - x0);
++      i = range.length - 1;
++      return scale;
+     }
+-    hierarchy.sort = function(x) {
+-      if (!arguments.length) return sort;
+-      sort = x;
+-      return hierarchy;
++    scale.domain = function(x) {
++      if (!arguments.length) return [ x0, x1 ];
++      x0 = +x[0];
++      x1 = +x[x.length - 1];
++      return rescale();
+     };
+-    hierarchy.children = function(x) {
+-      if (!arguments.length) return children;
+-      children = x;
+-      return hierarchy;
++    scale.range = function(x) {
++      if (!arguments.length) return range;
++      range = x;
++      return rescale();
+     };
+-    hierarchy.value = function(x) {
+-      if (!arguments.length) return value;
+-      value = x;
+-      return hierarchy;
++    scale.invertExtent = function(y) {
++      y = range.indexOf(y);
++      y = y < 0 ? NaN : y / kx + x0;
++      return [ y, y + 1 / kx ];
+     };
+-    hierarchy.revalue = function(root) {
+-      if (value) {
+-        d3_layout_hierarchyVisitBefore(root, function(node) {
+-          if (node.children) node.value = 0;
+-        });
+-        d3_layout_hierarchyVisitAfter(root, function(node) {
+-          var parent;
+-          if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
+-          if (parent = node.parent) parent.value += node.value;
+-        });
+-      }
+-      return root;
++    scale.copy = function() {
++      return d3_scale_quantize(x0, x1, range);
+     };
+-    return hierarchy;
+-  };
+-  function d3_layout_hierarchyRebind(object, hierarchy) {
+-    d3.rebind(object, hierarchy, "sort", "children", "value");
+-    object.nodes = object;
+-    object.links = d3_layout_hierarchyLinks;
+-    return object;
+-  }
+-  function d3_layout_hierarchyVisitBefore(node, callback) {
+-    var nodes = [ node ];
+-    while ((node = nodes.pop()) != null) {
+-      callback(node);
+-      if ((children = node.children) && (n = children.length)) {
+-        var n, children;
+-        while (--n >= 0) nodes.push(children[n]);
+-      }
+-    }
+-  }
+-  function d3_layout_hierarchyVisitAfter(node, callback) {
+-    var nodes = [ node ], nodes2 = [];
+-    while ((node = nodes.pop()) != null) {
+-      nodes2.push(node);
+-      if ((children = node.children) && (n = children.length)) {
+-        var i = -1, n, children;
+-        while (++i < n) nodes.push(children[i]);
+-      }
+-    }
+-    while ((node = nodes2.pop()) != null) {
+-      callback(node);
+-    }
+-  }
+-  function d3_layout_hierarchyChildren(d) {
+-    return d.children;
+-  }
+-  function d3_layout_hierarchyValue(d) {
+-    return d.value;
+-  }
+-  function d3_layout_hierarchySort(a, b) {
+-    return b.value - a.value;
+-  }
+-  function d3_layout_hierarchyLinks(nodes) {
+-    return d3.merge(nodes.map(function(parent) {
+-      return (parent.children || []).map(function(child) {
+-        return {
+-          source: parent,
+-          target: child
+-        };
+-      });
+-    }));
++    return rescale();
+   }
+-  d3.layout.partition = function() {
+-    var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
+-    function position(node, x, dx, dy) {
+-      var children = node.children;
+-      node.x = x;
+-      node.y = node.depth * dy;
+-      node.dx = dx;
+-      node.dy = dy;
+-      if (children && (n = children.length)) {
+-        var i = -1, n, c, d;
+-        dx = node.value ? dx / node.value : 0;
+-        while (++i < n) {
+-          position(c = children[i], x, d = c.value * dx, dy);
+-          x += d;
+-        }
+-      }
+-    }
+-    function depth(node) {
+-      var children = node.children, d = 0;
+-      if (children && (n = children.length)) {
+-        var i = -1, n;
+-        while (++i < n) d = Math.max(d, depth(children[i]));
+-      }
+-      return 1 + d;
+-    }
+-    function partition(d, i) {
+-      var nodes = hierarchy.call(this, d, i);
+-      position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
+-      return nodes;
++  d3.scale.threshold = function() {
++    return d3_scale_threshold([ .5 ], [ 0, 1 ]);
++  };
++  function d3_scale_threshold(domain, range) {
++    function scale(x) {
++      if (x <= x) return range[d3.bisect(domain, x)];
+     }
+-    partition.size = function(x) {
+-      if (!arguments.length) return size;
+-      size = x;
+-      return partition;
++    scale.domain = function(_) {
++      if (!arguments.length) return domain;
++      domain = _;
++      return scale;
+     };
+-    return d3_layout_hierarchyRebind(partition, hierarchy);
++    scale.range = function(_) {
++      if (!arguments.length) return range;
++      range = _;
++      return scale;
++    };
++    scale.invertExtent = function(y) {
++      y = range.indexOf(y);
++      return [ domain[y - 1], domain[y] ];
++    };
++    scale.copy = function() {
++      return d3_scale_threshold(domain, range);
++    };
++    return scale;
++  }
++  d3.scale.identity = function() {
++    return d3_scale_identity([ 0, 1 ]);
+   };
+-  d3.layout.pie = function() {
+-    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
+-    function pie(data) {
+-      var n = data.length, values = data.map(function(d, i) {
+-        return +value.call(pie, d, i);
+-      }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), sum = d3.sum(values), k = sum ? (da - n * pa) / sum : 0, index = d3.range(n), arcs = [], v;
+-      if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
+-        return values[j] - values[i];
+-      } : function(i, j) {
+-        return sort(data[i], data[j]);
+-      });
+-      index.forEach(function(i) {
+-        arcs[i] = {
+-          data: data[i],
+-          value: v = values[i],
+-          startAngle: a,
+-          endAngle: a += v * k + pa,
+-          padAngle: p
+-        };
+-      });
+-      return arcs;
++  function d3_scale_identity(domain) {
++    function identity(x) {
++      return +x;
+     }
+-    pie.value = function(_) {
+-      if (!arguments.length) return value;
+-      value = _;
+-      return pie;
+-    };
+-    pie.sort = function(_) {
+-      if (!arguments.length) return sort;
+-      sort = _;
+-      return pie;
++    identity.invert = identity;
++    identity.domain = identity.range = function(x) {
++      if (!arguments.length) return domain;
++      domain = x.map(identity);
++      return identity;
+     };
+-    pie.startAngle = function(_) {
+-      if (!arguments.length) return startAngle;
+-      startAngle = _;
+-      return pie;
++    identity.ticks = function(m) {
++      return d3_scale_linearTicks(domain, m);
+     };
+-    pie.endAngle = function(_) {
+-      if (!arguments.length) return endAngle;
+-      endAngle = _;
+-      return pie;
++    identity.tickFormat = function(m, format) {
++      return d3_scale_linearTickFormat(domain, m, format);
+     };
+-    pie.padAngle = function(_) {
+-      if (!arguments.length) return padAngle;
+-      padAngle = _;
+-      return pie;
++    identity.copy = function() {
++      return d3_scale_identity(domain);
+     };
+-    return pie;
+-  };
+-  var d3_layout_pieSortByValue = {};
+-  d3.layout.stack = function() {
+-    var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
+-    function stack(data, index) {
+-      if (!(n = data.length)) return data;
+-      var series = data.map(function(d, i) {
+-        return values.call(stack, d, i);
+-      });
+-      var points = series.map(function(d) {
+-        return d.map(function(v, i) {
+-          return [ x.call(stack, v, i), y.call(stack, v, i) ];
+-        });
+-      });
+-      var orders = order.call(stack, points, index);
+-      series = d3.permute(series, orders);
+-      points = d3.permute(points, orders);
+-      var offsets = offset.call(stack, points, index);
+-      var m = series[0].length, n, i, j, o;
+-      for (j = 0; j < m; ++j) {
+-        out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
+-        for (i = 1; i < n; ++i) {
+-          out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
++    return identity;
++  }
++  d3.svg = {};
++  function d3_zero() {
++    return 0;
++  }
++  d3.svg.arc = function() {
++    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
++    function arc() {
++      var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
++      if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
++      if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
++      var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
++      if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
++        rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
++        if (!cw) p1 *= -1;
++        if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
++        if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
++      }
++      if (r1) {
++        x0 = r1 * Math.cos(a0 + p1);
++        y0 = r1 * Math.sin(a0 + p1);
++        x1 = r1 * Math.cos(a1 - p1);
++        y1 = r1 * Math.sin(a1 - p1);
++        var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
++        if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
++          var h1 = (a0 + a1) / 2;
++          x0 = r1 * Math.cos(h1);
++          y0 = r1 * Math.sin(h1);
++          x1 = y1 = null;
++        }
++      } else {
++        x0 = y0 = 0;
++      }
++      if (r0) {
++        x2 = r0 * Math.cos(a1 - p0);
++        y2 = r0 * Math.sin(a1 - p0);
++        x3 = r0 * Math.cos(a0 + p0);
++        y3 = r0 * Math.sin(a0 + p0);
++        var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
++        if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
++          var h0 = (a0 + a1) / 2;
++          x2 = r0 * Math.cos(h0);
++          y2 = r0 * Math.sin(h0);
++          x3 = y3 = null;
++        }
++      } else {
++        x2 = y2 = 0;
++      }
++      if (da > ε && (rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
++        cr = r0 < r1 ^ cw ? 0 : 1;
++        var rc1 = rc, rc0 = rc;
++        if (da < π) {
++          var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
++          rc0 = Math.min(rc, (r0 - lc) / (kc - 1));
++          rc1 = Math.min(rc, (r1 - lc) / (kc + 1));
++        }
++        if (x1 != null) {
++          var t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
++          if (rc === rc1) {
++            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
++          } else {
++            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
++          }
++        } else {
++          path.push("M", x0, ",", y0);
++        }
++        if (x3 != null) {
++          var t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
++          if (rc === rc0) {
++            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
++          } else {
++            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
++          }
++        } else {
++          path.push("L", x2, ",", y2);
+         }
++      } else {
++        path.push("M", x0, ",", y0);
++        if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
++        path.push("L", x2, ",", y2);
++        if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
+       }
+-      return data;
++      path.push("Z");
++      return path.join("");
+     }
+-    stack.values = function(x) {
+-      if (!arguments.length) return values;
+-      values = x;
+-      return stack;
++    function circleSegment(r1, cw) {
++      return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
++    }
++    arc.innerRadius = function(v) {
++      if (!arguments.length) return innerRadius;
++      innerRadius = d3_functor(v);
++      return arc;
+     };
+-    stack.order = function(x) {
+-      if (!arguments.length) return order;
+-      order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
+-      return stack;
++    arc.outerRadius = function(v) {
++      if (!arguments.length) return outerRadius;
++      outerRadius = d3_functor(v);
++      return arc;
+     };
+-    stack.offset = function(x) {
+-      if (!arguments.length) return offset;
+-      offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
+-      return stack;
++    arc.cornerRadius = function(v) {
++      if (!arguments.length) return cornerRadius;
++      cornerRadius = d3_functor(v);
++      return arc;
+     };
+-    stack.x = function(z) {
+-      if (!arguments.length) return x;
+-      x = z;
+-      return stack;
++    arc.padRadius = function(v) {
++      if (!arguments.length) return padRadius;
++      padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
++      return arc;
+     };
+-    stack.y = function(z) {
+-      if (!arguments.length) return y;
+-      y = z;
+-      return stack;
++    arc.startAngle = function(v) {
++      if (!arguments.length) return startAngle;
++      startAngle = d3_functor(v);
++      return arc;
+     };
+-    stack.out = function(z) {
+-      if (!arguments.length) return out;
+-      out = z;
+-      return stack;
++    arc.endAngle = function(v) {
++      if (!arguments.length) return endAngle;
++      endAngle = d3_functor(v);
++      return arc;
+     };
+-    return stack;
++    arc.padAngle = function(v) {
++      if (!arguments.length) return padAngle;
++      padAngle = d3_functor(v);
++      return arc;
++    };
++    arc.centroid = function() {
++      var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
++      return [ Math.cos(a) * r, Math.sin(a) * r ];
++    };
++    return arc;
+   };
+-  function d3_layout_stackX(d) {
+-    return d.x;
+-  }
+-  function d3_layout_stackY(d) {
+-    return d.y;
++  var d3_svg_arcAuto = "auto";
++  function d3_svg_arcInnerRadius(d) {
++    return d.innerRadius;
+   }
+-  function d3_layout_stackOut(d, y0, y) {
+-    d.y0 = y0;
+-    d.y = y;
++  function d3_svg_arcOuterRadius(d) {
++    return d.outerRadius;
+   }
+-  var d3_layout_stackOrders = d3.map({
+-    "inside-out": function(data) {
+-      var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
+-        return max[a] - max[b];
+-      }), top = 0, bottom = 0, tops = [], bottoms = [];
+-      for (i = 0; i < n; ++i) {
+-        j = index[i];
+-        if (top < bottom) {
+-          top += sums[j];
+-          tops.push(j);
+-        } else {
+-          bottom += sums[j];
+-          bottoms.push(j);
+-        }
+-      }
+-      return bottoms.reverse().concat(tops);
+-    },
+-    reverse: function(data) {
+-      return d3.range(data.length).reverse();
+-    },
+-    "default": d3_layout_stackOrderDefault
+-  });
+-  var d3_layout_stackOffsets = d3.map({
+-    silhouette: function(data) {
+-      var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
+-      for (j = 0; j < m; ++j) {
+-        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
+-        if (o > max) max = o;
+-        sums.push(o);
+-      }
+-      for (j = 0; j < m; ++j) {
+-        y0[j] = (max - sums[j]) / 2;
+-      }
+-      return y0;
+-    },
+-    wiggle: function(data) {
+-      var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
+-      y0[0] = o = o0 = 0;
+-      for (j = 1; j < m; ++j) {
+-        for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
+-        for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
+-          for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
+-            s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
+-          }
+-          s2 += s3 * data[i][j][1];
+-        }
+-        y0[j] = o -= s1 ? s2 / s1 * dx : 0;
+-        if (o < o0) o0 = o;
+-      }
+-      for (j = 0; j < m; ++j) y0[j] -= o0;
+-      return y0;
+-    },
+-    expand: function(data) {
+-      var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
+-      for (j = 0; j < m; ++j) {
+-        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
+-        if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
+-      }
+-      for (j = 0; j < m; ++j) y0[j] = 0;
+-      return y0;
+-    },
+-    zero: d3_layout_stackOffsetZero
+-  });
+-  function d3_layout_stackOrderDefault(data) {
+-    return d3.range(data.length);
++  function d3_svg_arcStartAngle(d) {
++    return d.startAngle;
+   }
+-  function d3_layout_stackOffsetZero(data) {
+-    var j = -1, m = data[0].length, y0 = [];
+-    while (++j < m) y0[j] = 0;
+-    return y0;
++  function d3_svg_arcEndAngle(d) {
++    return d.endAngle;
+   }
+-  function d3_layout_stackMaxIndex(array) {
+-    var i = 1, j = 0, v = array[0][1], k, n = array.length;
+-    for (;i < n; ++i) {
+-      if ((k = array[i][1]) > v) {
+-        j = i;
+-        v = k;
+-      }
+-    }
+-    return j;
++  function d3_svg_arcPadAngle(d) {
++    return d && d.padAngle;
+   }
+-  function d3_layout_stackReduceSum(d) {
+-    return d.reduce(d3_layout_stackSum, 0);
++  function d3_svg_arcSweep(x0, y0, x1, y1) {
++    return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
+   }
+-  function d3_layout_stackSum(p, d) {
+-    return p + d[1];
++  function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
++    var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(Math.max(0, r * r * d2 - D * D)), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
++    if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
++    return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
+   }
+-  d3.layout.histogram = function() {
+-    var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
+-    function histogram(data, i) {
+-      var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
+-      while (++i < m) {
+-        bin = bins[i] = [];
+-        bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
+-        bin.y = 0;
++  function d3_svg_line(projection) {
++    var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
++    function line(data) {
++      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
++      function segment() {
++        segments.push("M", interpolate(projection(points), tension));
+       }
+-      if (m > 0) {
+-        i = -1;
+-        while (++i < n) {
+-          x = values[i];
+-          if (x >= range[0] && x <= range[1]) {
+-            bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
+-            bin.y += k;
+-            bin.push(data[i]);
+-          }
++      while (++i < n) {
++        if (defined.call(this, d = data[i], i)) {
++          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
++        } else if (points.length) {
++          segment();
++          points = [];
+         }
+       }
+-      return bins;
++      if (points.length) segment();
++      return segments.length ? segments.join("") : null;
+     }
+-    histogram.value = function(x) {
+-      if (!arguments.length) return valuer;
+-      valuer = x;
+-      return histogram;
++    line.x = function(_) {
++      if (!arguments.length) return x;
++      x = _;
++      return line;
+     };
+-    histogram.range = function(x) {
+-      if (!arguments.length) return ranger;
+-      ranger = d3_functor(x);
+-      return histogram;
++    line.y = function(_) {
++      if (!arguments.length) return y;
++      y = _;
++      return line;
+     };
+-    histogram.bins = function(x) {
+-      if (!arguments.length) return binner;
+-      binner = typeof x === "number" ? function(range) {
+-        return d3_layout_histogramBinFixed(range, x);
+-      } : d3_functor(x);
+-      return histogram;
++    line.defined = function(_) {
++      if (!arguments.length) return defined;
++      defined = _;
++      return line;
+     };
+-    histogram.frequency = function(x) {
+-      if (!arguments.length) return frequency;
+-      frequency = !!x;
+-      return histogram;
++    line.interpolate = function(_) {
++      if (!arguments.length) return interpolateKey;
++      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
++      return line;
+     };
+-    return histogram;
++    line.tension = function(_) {
++      if (!arguments.length) return tension;
++      tension = _;
++      return line;
++    };
++    return line;
++  }
++  d3.svg.line = function() {
++    return d3_svg_line(d3_identity);
+   };
+-  function d3_layout_histogramBinSturges(range, values) {
+-    return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
++  var d3_svg_lineInterpolators = d3.map({
++    linear: d3_svg_lineLinear,
++    "linear-closed": d3_svg_lineLinearClosed,
++    step: d3_svg_lineStep,
++    "step-before": d3_svg_lineStepBefore,
++    "step-after": d3_svg_lineStepAfter,
++    basis: d3_svg_lineBasis,
++    "basis-open": d3_svg_lineBasisOpen,
++    "basis-closed": d3_svg_lineBasisClosed,
++    bundle: d3_svg_lineBundle,
++    cardinal: d3_svg_lineCardinal,
++    "cardinal-open": d3_svg_lineCardinalOpen,
++    "cardinal-closed": d3_svg_lineCardinalClosed,
++    monotone: d3_svg_lineMonotone
++  });
++  d3_svg_lineInterpolators.forEach(function(key, value) {
++    value.key = key;
++    value.closed = /-closed$/.test(key);
++  });
++  function d3_svg_lineLinear(points) {
++    return points.length > 1 ? points.join("L") : points + "Z";
+   }
+-  function d3_layout_histogramBinFixed(range, n) {
+-    var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
+-    while (++x <= n) f[x] = m * x + b;
+-    return f;
++  function d3_svg_lineLinearClosed(points) {
++    return points.join("L") + "Z";
+   }
+-  function d3_layout_histogramRange(values) {
+-    return [ d3.min(values), d3.max(values) ];
++  function d3_svg_lineStep(points) {
++    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
++    while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
++    if (n > 1) path.push("H", p[0]);
++    return path.join("");
+   }
+-  d3.layout.pack = function() {
+-    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
+-    function pack(d, i) {
+-      var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
+-        return radius;
+-      };
+-      root.x = root.y = 0;
+-      d3_layout_hierarchyVisitAfter(root, function(d) {
+-        d.r = +r(d.value);
+-      });
+-      d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
+-      if (padding) {
+-        var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
+-        d3_layout_hierarchyVisitAfter(root, function(d) {
+-          d.r += dr;
+-        });
+-        d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
+-        d3_layout_hierarchyVisitAfter(root, function(d) {
+-          d.r -= dr;
+-        });
++  function d3_svg_lineStepBefore(points) {
++    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
++    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
++    return path.join("");
++  }
++  function d3_svg_lineStepAfter(points) {
++    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
++    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
++    return path.join("");
++  }
++  function d3_svg_lineCardinalOpen(points, tension) {
++    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
++  }
++  function d3_svg_lineCardinalClosed(points, tension) {
++    return points.length < 3 ? d3_svg_lineLinearClosed(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), 
++    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
++  }
++  function d3_svg_lineCardinal(points, tension) {
++    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
++  }
++  function d3_svg_lineHermite(points, tangents) {
++    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
++      return d3_svg_lineLinear(points);
++    }
++    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
++    if (quad) {
++      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
++      p0 = points[1];
++      pi = 2;
++    }
++    if (tangents.length > 1) {
++      t = tangents[1];
++      p = points[pi];
++      pi++;
++      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
++      for (var i = 2; i < tangents.length; i++, pi++) {
++        p = points[pi];
++        t = tangents[i];
++        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
+       }
+-      d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
+-      return nodes;
+     }
+-    pack.size = function(_) {
+-      if (!arguments.length) return size;
+-      size = _;
+-      return pack;
+-    };
+-    pack.radius = function(_) {
+-      if (!arguments.length) return radius;
+-      radius = _ == null || typeof _ === "function" ? _ : +_;
+-      return pack;
+-    };
+-    pack.padding = function(_) {
+-      if (!arguments.length) return padding;
+-      padding = +_;
+-      return pack;
+-    };
+-    return d3_layout_hierarchyRebind(pack, hierarchy);
+-  };
+-  function d3_layout_packSort(a, b) {
+-    return a.value - b.value;
++    if (quad) {
++      var lp = points[pi];
++      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
++    }
++    return path;
+   }
+-  function d3_layout_packInsert(a, b) {
+-    var c = a._pack_next;
+-    a._pack_next = b;
+-    b._pack_prev = a;
+-    b._pack_next = c;
+-    c._pack_prev = b;
++  function d3_svg_lineCardinalTangents(points, tension) {
++    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
++    while (++i < n) {
++      p0 = p1;
++      p1 = p2;
++      p2 = points[i];
++      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
++    }
++    return tangents;
+   }
+-  function d3_layout_packSplice(a, b) {
+-    a._pack_next = b;
+-    b._pack_prev = a;
++  function d3_svg_lineBasis(points) {
++    if (points.length < 3) return d3_svg_lineLinear(points);
++    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
++    points.push(points[n - 1]);
++    while (++i <= n) {
++      pi = points[i];
++      px.shift();
++      px.push(pi[0]);
++      py.shift();
++      py.push(pi[1]);
++      d3_svg_lineBasisBezier(path, px, py);
++    }
++    points.pop();
++    path.push("L", pi);
++    return path.join("");
+   }
+-  function d3_layout_packIntersects(a, b) {
+-    var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
+-    return .999 * dr * dr > dx * dx + dy * dy;
++  function d3_svg_lineBasisOpen(points) {
++    if (points.length < 4) return d3_svg_lineLinear(points);
++    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
++    while (++i < 3) {
++      pi = points[i];
++      px.push(pi[0]);
++      py.push(pi[1]);
++    }
++    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
++    --i;
++    while (++i < n) {
++      pi = points[i];
++      px.shift();
++      px.push(pi[0]);
++      py.shift();
++      py.push(pi[1]);
++      d3_svg_lineBasisBezier(path, px, py);
++    }
++    return path.join("");
+   }
+-  function d3_layout_packSiblings(node) {
+-    if (!(nodes = node.children) || !(n = nodes.length)) return;
+-    var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
+-    function bound(node) {
+-      xMin = Math.min(node.x - node.r, xMin);
+-      xMax = Math.max(node.x + node.r, xMax);
+-      yMin = Math.min(node.y - node.r, yMin);
+-      yMax = Math.max(node.y + node.r, yMax);
++  function d3_svg_lineBasisClosed(points) {
++    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
++    while (++i < 4) {
++      pi = points[i % n];
++      px.push(pi[0]);
++      py.push(pi[1]);
+     }
+-    nodes.forEach(d3_layout_packLink);
+-    a = nodes[0];
+-    a.x = -a.r;
+-    a.y = 0;
+-    bound(a);
+-    if (n > 1) {
+-      b = nodes[1];
+-      b.x = b.r;
+-      b.y = 0;
+-      bound(b);
+-      if (n > 2) {
+-        c = nodes[2];
+-        d3_layout_packPlace(a, b, c);
+-        bound(c);
+-        d3_layout_packInsert(a, c);
+-        a._pack_prev = c;
+-        d3_layout_packInsert(c, b);
+-        b = a._pack_next;
+-        for (i = 3; i < n; i++) {
+-          d3_layout_packPlace(a, b, c = nodes[i]);
+-          var isect = 0, s1 = 1, s2 = 1;
+-          for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
+-            if (d3_layout_packIntersects(j, c)) {
+-              isect = 1;
+-              break;
+-            }
+-          }
+-          if (isect == 1) {
+-            for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
+-              if (d3_layout_packIntersects(k, c)) {
+-                break;
+-              }
+-            }
+-          }
+-          if (isect) {
+-            if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
+-            i--;
+-          } else {
+-            d3_layout_packInsert(a, c);
+-            b = c;
+-            bound(c);
+-          }
+-        }
+-      }
++    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
++    --i;
++    while (++i < m) {
++      pi = points[i % n];
++      px.shift();
++      px.push(pi[0]);
++      py.shift();
++      py.push(pi[1]);
++      d3_svg_lineBasisBezier(path, px, py);
+     }
+-    var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
+-    for (i = 0; i < n; i++) {
+-      c = nodes[i];
+-      c.x -= cx;
+-      c.y -= cy;
+-      cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
++    return path.join("");
++  }
++  function d3_svg_lineBundle(points, tension) {
++    var n = points.length - 1;
++    if (n) {
++      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
++      while (++i <= n) {
++        p = points[i];
++        t = i / n;
++        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
++        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
++      }
+     }
+-    node.r = cr;
+-    nodes.forEach(d3_layout_packUnlink);
++    return d3_svg_lineBasis(points);
+   }
+-  function d3_layout_packLink(node) {
+-    node._pack_next = node._pack_prev = node;
++  function d3_svg_lineDot4(a, b) {
++    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+   }
+-  function d3_layout_packUnlink(node) {
+-    delete node._pack_next;
+-    delete node._pack_prev;
++  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
++  function d3_svg_lineBasisBezier(path, x, y) {
++    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
+   }
+-  function d3_layout_packTransform(node, x, y, k) {
+-    var children = node.children;
+-    node.x = x += k * node.x;
+-    node.y = y += k * node.y;
+-    node.r *= k;
+-    if (children) {
+-      var i = -1, n = children.length;
+-      while (++i < n) d3_layout_packTransform(children[i], x, y, k);
+-    }
++  function d3_svg_lineSlope(p0, p1) {
++    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
+   }
+-  function d3_layout_packPlace(a, b, c) {
+-    var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
+-    if (db && (dx || dy)) {
+-      var da = b.r + c.r, dc = dx * dx + dy * dy;
+-      da *= da;
+-      db *= db;
+-      var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
+-      c.x = a.x + x * dx + y * dy;
+-      c.y = a.y + x * dy - y * dx;
+-    } else {
+-      c.x = a.x + db;
+-      c.y = a.y;
++  function d3_svg_lineFiniteDifferences(points) {
++    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
++    while (++i < j) {
++      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
+     }
++    m[i] = d;
++    return m;
+   }
+-  d3.layout.tree = function() {
+-    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
+-    function tree(d, i) {
+-      var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
+-      d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
+-      d3_layout_hierarchyVisitBefore(root1, secondWalk);
+-      if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
+-        var left = root0, right = root0, bottom = root0;
+-        d3_layout_hierarchyVisitBefore(root0, function(node) {
+-          if (node.x < left.x) left = node;
+-          if (node.x > right.x) right = node;
+-          if (node.depth > bottom.depth) bottom = node;
+-        });
+-        var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
+-        d3_layout_hierarchyVisitBefore(root0, function(node) {
+-          node.x = (node.x + tx) * kx;
+-          node.y = node.depth * ky;
+-        });
+-      }
+-      return nodes;
+-    }
+-    function wrapTree(root0) {
+-      var root1 = {
+-        A: null,
+-        children: [ root0 ]
+-      }, queue = [ root1 ], node1;
+-      while ((node1 = queue.pop()) != null) {
+-        for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
+-          queue.push((children[i] = child = {
+-            _: children[i],
+-            parent: node1,
+-            children: (child = children[i].children) && child.slice() || [],
+-            A: null,
+-            a: null,
+-            z: 0,
+-            m: 0,
+-            c: 0,
+-            s: 0,
+-            t: null,
+-            i: i
+-          }).a = child);
++  function d3_svg_lineMonotoneTangents(points) {
++    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
++    while (++i < j) {
++      d = d3_svg_lineSlope(points[i], points[i + 1]);
++      if (abs(d) < ε) {
++        m[i] = m[i + 1] = 0;
++      } else {
++        a = m[i] / d;
++        b = m[i + 1] / d;
++        s = a * a + b * b;
++        if (s > 9) {
++          s = d * 3 / Math.sqrt(s);
++          m[i] = s * a;
++          m[i + 1] = s * b;
+         }
+       }
+-      return root1.children[0];
+     }
+-    function firstWalk(v) {
+-      var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
+-      if (children.length) {
+-        d3_layout_treeShift(v);
+-        var midpoint = (children[0].z + children[children.length - 1].z) / 2;
+-        if (w) {
+-          v.z = w.z + separation(v._, w._);
+-          v.m = v.z - midpoint;
+-        } else {
+-          v.z = midpoint;
+-        }
+-      } else if (w) {
+-        v.z = w.z + separation(v._, w._);
+-      }
+-      v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
++    i = -1;
++    while (++i <= j) {
++      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
++      tangents.push([ s || 0, m[i] * s || 0 ]);
+     }
+-    function secondWalk(v) {
+-      v._.x = v.z + v.parent.m;
+-      v.m += v.parent.m;
++    return tangents;
++  }
++  function d3_svg_lineMonotone(points) {
++    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
++  }
++  d3.svg.line.radial = function() {
++    var line = d3_svg_line(d3_svg_lineRadial);
++    line.radius = line.x, delete line.x;
++    line.angle = line.y, delete line.y;
++    return line;
++  };
++  function d3_svg_lineRadial(points) {
++    var point, i = -1, n = points.length, r, a;
++    while (++i < n) {
++      point = points[i];
++      r = point[0];
++      a = point[1] - halfπ;
++      point[0] = r * Math.cos(a);
++      point[1] = r * Math.sin(a);
+     }
+-    function apportion(v, w, ancestor) {
+-      if (w) {
+-        var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
+-        while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
+-          vom = d3_layout_treeLeft(vom);
+-          vop = d3_layout_treeRight(vop);
+-          vop.a = v;
+-          shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
+-          if (shift > 0) {
+-            d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
+-            sip += shift;
+-            sop += shift;
+-          }
+-          sim += vim.m;
+-          sip += vip.m;
+-          som += vom.m;
+-          sop += vop.m;
+-        }
+-        if (vim && !d3_layout_treeRight(vop)) {
+-          vop.t = vim;
+-          vop.m += sim - sop;
+-        }
+-        if (vip && !d3_layout_treeLeft(vom)) {
+-          vom.t = vip;
+-          vom.m += sip - som;
+-          ancestor = v;
++    return points;
++  }
++  function d3_svg_area(projection) {
++    var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
++    function area(data) {
++      var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
++        return x;
++      } : d3_functor(x1), fy1 = y0 === y1 ? function() {
++        return y;
++      } : d3_functor(y1), x, y;
++      function segment() {
++        segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
++      }
++      while (++i < n) {
++        if (defined.call(this, d = data[i], i)) {
++          points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
++          points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
++        } else if (points0.length) {
++          segment();
++          points0 = [];
++          points1 = [];
+         }
+       }
+-      return ancestor;
++      if (points0.length) segment();
++      return segments.length ? segments.join("") : null;
+     }
+-    function sizeNode(node) {
+-      node.x *= size[0];
+-      node.y = node.depth * size[1];
++    area.x = function(_) {
++      if (!arguments.length) return x1;
++      x0 = x1 = _;
++      return area;
++    };
++    area.x0 = function(_) {
++      if (!arguments.length) return x0;
++      x0 = _;
++      return area;
++    };
++    area.x1 = function(_) {
++      if (!arguments.length) return x1;
++      x1 = _;
++      return area;
++    };
++    area.y = function(_) {
++      if (!arguments.length) return y1;
++      y0 = y1 = _;
++      return area;
++    };
++    area.y0 = function(_) {
++      if (!arguments.length) return y0;
++      y0 = _;
++      return area;
++    };
++    area.y1 = function(_) {
++      if (!arguments.length) return y1;
++      y1 = _;
++      return area;
++    };
++    area.defined = function(_) {
++      if (!arguments.length) return defined;
++      defined = _;
++      return area;
++    };
++    area.interpolate = function(_) {
++      if (!arguments.length) return interpolateKey;
++      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
++      interpolateReverse = interpolate.reverse || interpolate;
++      L = interpolate.closed ? "M" : "L";
++      return area;
++    };
++    area.tension = function(_) {
++      if (!arguments.length) return tension;
++      tension = _;
++      return area;
++    };
++    return area;
++  }
++  d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
++  d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
++  d3.svg.area = function() {
++    return d3_svg_area(d3_identity);
++  };
++  d3.svg.area.radial = function() {
++    var area = d3_svg_area(d3_svg_lineRadial);
++    area.radius = area.x, delete area.x;
++    area.innerRadius = area.x0, delete area.x0;
++    area.outerRadius = area.x1, delete area.x1;
++    area.angle = area.y, delete area.y;
++    area.startAngle = area.y0, delete area.y0;
++    area.endAngle = area.y1, delete area.y1;
++    return area;
++  };
++  d3.svg.chord = function() {
++    var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
++    function chord(d, i) {
++      var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
++      return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
+     }
+-    tree.separation = function(x) {
+-      if (!arguments.length) return separation;
+-      separation = x;
+-      return tree;
++    function subgroup(self, f, d, i) {
++      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
++      return {
++        r: r,
++        a0: a0,
++        a1: a1,
++        p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
++        p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
++      };
++    }
++    function equals(a, b) {
++      return a.a0 == b.a0 && a.a1 == b.a1;
++    }
++    function arc(r, p, a) {
++      return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
++    }
++    function curve(r0, p0, r1, p1) {
++      return "Q 0,0 " + p1;
++    }
++    chord.radius = function(v) {
++      if (!arguments.length) return radius;
++      radius = d3_functor(v);
++      return chord;
+     };
+-    tree.size = function(x) {
+-      if (!arguments.length) return nodeSize ? null : size;
+-      nodeSize = (size = x) == null ? sizeNode : null;
+-      return tree;
++    chord.source = function(v) {
++      if (!arguments.length) return source;
++      source = d3_functor(v);
++      return chord;
+     };
+-    tree.nodeSize = function(x) {
+-      if (!arguments.length) return nodeSize ? size : null;
+-      nodeSize = (size = x) == null ? null : sizeNode;
+-      return tree;
++    chord.target = function(v) {
++      if (!arguments.length) return target;
++      target = d3_functor(v);
++      return chord;
+     };
+-    return d3_layout_hierarchyRebind(tree, hierarchy);
++    chord.startAngle = function(v) {
++      if (!arguments.length) return startAngle;
++      startAngle = d3_functor(v);
++      return chord;
++    };
++    chord.endAngle = function(v) {
++      if (!arguments.length) return endAngle;
++      endAngle = d3_functor(v);
++      return chord;
++    };
++    return chord;
+   };
+-  function d3_layout_treeSeparation(a, b) {
+-    return a.parent == b.parent ? 1 : 2;
+-  }
+-  function d3_layout_treeLeft(v) {
+-    var children = v.children;
+-    return children.length ? children[0] : v.t;
+-  }
+-  function d3_layout_treeRight(v) {
+-    var children = v.children, n;
+-    return (n = children.length) ? children[n - 1] : v.t;
+-  }
+-  function d3_layout_treeMove(wm, wp, shift) {
+-    var change = shift / (wp.i - wm.i);
+-    wp.c -= change;
+-    wp.s += shift;
+-    wm.c += change;
+-    wp.z += shift;
+-    wp.m += shift;
++  function d3_svg_chordRadius(d) {
++    return d.radius;
+   }
+-  function d3_layout_treeShift(v) {
+-    var shift = 0, change = 0, children = v.children, i = children.length, w;
+-    while (--i >= 0) {
+-      w = children[i];
+-      w.z += shift;
+-      w.m += shift;
+-      shift += w.s + (change += w.c);
++  d3.svg.diagonal = function() {
++    var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
++    function diagonal(d, i) {
++      var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
++        x: p0.x,
++        y: m
++      }, {
++        x: p3.x,
++        y: m
++      }, p3 ];
++      p = p.map(projection);
++      return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
+     }
++    diagonal.source = function(x) {
++      if (!arguments.length) return source;
++      source = d3_functor(x);
++      return diagonal;
++    };
++    diagonal.target = function(x) {
++      if (!arguments.length) return target;
++      target = d3_functor(x);
++      return diagonal;
++    };
++    diagonal.projection = function(x) {
++      if (!arguments.length) return projection;
++      projection = x;
++      return diagonal;
++    };
++    return diagonal;
++  };
++  function d3_svg_diagonalProjection(d) {
++    return [ d.x, d.y ];
+   }
+-  function d3_layout_treeAncestor(vim, v, ancestor) {
+-    return vim.a.parent === v.parent ? vim.a : ancestor;
++  d3.svg.diagonal.radial = function() {
++    var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
++    diagonal.projection = function(x) {
++      return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
++    };
++    return diagonal;
++  };
++  function d3_svg_diagonalRadialProjection(projection) {
++    return function() {
++      var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
++      return [ r * Math.cos(a), r * Math.sin(a) ];
++    };
+   }
+-  d3.layout.cluster = function() {
+-    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
+-    function cluster(d, i) {
+-      var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
+-      d3_layout_hierarchyVisitAfter(root, function(node) {
+-        var children = node.children;
+-        if (children && children.length) {
+-          node.x = d3_layout_clusterX(children);
+-          node.y = d3_layout_clusterY(children);
+-        } else {
+-          node.x = previousNode ? x += separation(node, previousNode) : 0;
+-          node.y = 0;
+-          previousNode = node;
+-        }
+-      });
+-      var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
+-      d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
+-        node.x = (node.x - root.x) * size[0];
+-        node.y = (root.y - node.y) * size[1];
+-      } : function(node) {
+-        node.x = (node.x - x0) / (x1 - x0) * size[0];
+-        node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
+-      });
+-      return nodes;
++  d3.svg.symbol = function() {
++    var type = d3_svg_symbolType, size = d3_svg_symbolSize;
++    function symbol(d, i) {
++      return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
+     }
+-    cluster.separation = function(x) {
+-      if (!arguments.length) return separation;
+-      separation = x;
+-      return cluster;
++    symbol.type = function(x) {
++      if (!arguments.length) return type;
++      type = d3_functor(x);
++      return symbol;
+     };
+-    cluster.size = function(x) {
+-      if (!arguments.length) return nodeSize ? null : size;
+-      nodeSize = (size = x) == null;
+-      return cluster;
++    symbol.size = function(x) {
++      if (!arguments.length) return size;
++      size = d3_functor(x);
++      return symbol;
+     };
+-    cluster.nodeSize = function(x) {
+-      if (!arguments.length) return nodeSize ? size : null;
+-      nodeSize = (size = x) != null;
+-      return cluster;
++    return symbol;
++  };
++  function d3_svg_symbolSize() {
++    return 64;
++  }
++  function d3_svg_symbolType() {
++    return "circle";
++  }
++  function d3_svg_symbolCircle(size) {
++    var r = Math.sqrt(size / π);
++    return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
++  }
++  var d3_svg_symbols = d3.map({
++    circle: d3_svg_symbolCircle,
++    cross: function(size) {
++      var r = Math.sqrt(size / 5) / 2;
++      return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
++    },
++    diamond: function(size) {
++      var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
++      return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
++    },
++    square: function(size) {
++      var r = Math.sqrt(size) / 2;
++      return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
++    },
++    "triangle-down": function(size) {
++      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
++      return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
++    },
++    "triangle-up": function(size) {
++      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
++      return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
++    }
++  });
++  d3.svg.symbolTypes = d3_svg_symbols.keys();
++  var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
++  d3_selectionPrototype.transition = function(name) {
++    var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
++      time: Date.now(),
++      ease: d3_ease_cubicInOut,
++      delay: 0,
++      duration: 250
+     };
+-    return d3_layout_hierarchyRebind(cluster, hierarchy);
++    for (var j = -1, m = this.length; ++j < m; ) {
++      subgroups.push(subgroup = []);
++      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
++        if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
++        subgroup.push(node);
++      }
++    }
++    return d3_transition(subgroups, ns, id);
++  };
++  d3_selectionPrototype.interrupt = function(name) {
++    return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
+   };
+-  function d3_layout_clusterY(children) {
+-    return 1 + d3.max(children, function(child) {
+-      return child.y;
+-    });
+-  }
+-  function d3_layout_clusterX(children) {
+-    return children.reduce(function(x, child) {
+-      return x + child.x;
+-    }, 0) / children.length;
+-  }
+-  function d3_layout_clusterLeft(node) {
+-    var children = node.children;
+-    return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
++  var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
++  function d3_selection_interruptNS(ns) {
++    return function() {
++      var lock, activeId, active;
++      if ((lock = this[ns]) && (active = lock[activeId = lock.active])) {
++        active.timer.c = null;
++        active.timer.t = NaN;
++        if (--lock.count) delete lock[activeId]; else delete this[ns];
++        lock.active += .5;
++        active.event && active.event.interrupt.call(this, this.__data__, active.index);
++      }
++    };
+   }
+-  function d3_layout_clusterRight(node) {
+-    var children = node.children, n;
+-    return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
++  function d3_transition(groups, ns, id) {
++    d3_subclass(groups, d3_transitionPrototype);
++    groups.namespace = ns;
++    groups.id = id;
++    return groups;
+   }
+-  d3.layout.treemap = function() {
+-    var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
+-    function scale(children, k) {
+-      var i = -1, n = children.length, child, area;
+-      while (++i < n) {
+-        area = (child = children[i]).value * (k < 0 ? 0 : k);
+-        child.area = isNaN(area) || area <= 0 ? 0 : area;
+-      }
+-    }
+-    function squarify(node) {
+-      var children = node.children;
+-      if (children && children.length) {
+-        var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
+-        scale(remaining, rect.dx * rect.dy / node.value);
+-        row.area = 0;
+-        while ((n = remaining.length) > 0) {
+-          row.push(child = remaining[n - 1]);
+-          row.area += child.area;
+-          if (mode !== "squarify" || (score = worst(row, u)) <= best) {
+-            remaining.pop();
+-            best = score;
+-          } else {
+-            row.area -= row.pop().area;
+-            position(row, u, rect, false);
+-            u = Math.min(rect.dx, rect.dy);
+-            row.length = row.area = 0;
+-            best = Infinity;
+-          }
+-        }
+-        if (row.length) {
+-          position(row, u, rect, true);
+-          row.length = row.area = 0;
++  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
++  d3_transitionPrototype.call = d3_selectionPrototype.call;
++  d3_transitionPrototype.empty = d3_selectionPrototype.empty;
++  d3_transitionPrototype.node = d3_selectionPrototype.node;
++  d3_transitionPrototype.size = d3_selectionPrototype.size;
++  d3.transition = function(selection, name) {
++    return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3.selection().transition(selection);
++  };
++  d3.transition.prototype = d3_transitionPrototype;
++  d3_transitionPrototype.select = function(selector) {
++    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
++    selector = d3_selection_selector(selector);
++    for (var j = -1, m = this.length; ++j < m; ) {
++      subgroups.push(subgroup = []);
++      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
++        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
++          if ("__data__" in node) subnode.__data__ = node.__data__;
++          d3_transitionNode(subnode, i, ns, id, node[ns][id]);
++          subgroup.push(subnode);
++        } else {
++          subgroup.push(null);
+         }
+-        children.forEach(squarify);
+       }
+     }
+-    function stickify(node) {
+-      var children = node.children;
+-      if (children && children.length) {
+-        var rect = pad(node), remaining = children.slice(), child, row = [];
+-        scale(remaining, rect.dx * rect.dy / node.value);
+-        row.area = 0;
+-        while (child = remaining.pop()) {
+-          row.push(child);
+-          row.area += child.area;
+-          if (child.z != null) {
+-            position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
+-            row.length = row.area = 0;
++    return d3_transition(subgroups, ns, id);
++  };
++  d3_transitionPrototype.selectAll = function(selector) {
++    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
++    selector = d3_selection_selectorAll(selector);
++    for (var j = -1, m = this.length; ++j < m; ) {
++      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
++        if (node = group[i]) {
++          transition = node[ns][id];
++          subnodes = selector.call(node, node.__data__, i, j);
++          subgroups.push(subgroup = []);
++          for (var k = -1, o = subnodes.length; ++k < o; ) {
++            if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
++            subgroup.push(subnode);
+           }
+         }
+-        children.forEach(stickify);
+-      }
+-    }
+-    function worst(row, u) {
+-      var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
+-      while (++i < n) {
+-        if (!(r = row[i].area)) continue;
+-        if (r < rmin) rmin = r;
+-        if (r > rmax) rmax = r;
+       }
+-      s *= s;
+-      u *= u;
+-      return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
+     }
+-    function position(row, u, rect, flush) {
+-      var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
+-      if (u == rect.dx) {
+-        if (flush || v > rect.dy) v = rect.dy;
+-        while (++i < n) {
+-          o = row[i];
+-          o.x = x;
+-          o.y = y;
+-          o.dy = v;
+-          x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
+-        }
+-        o.z = true;
+-        o.dx += rect.x + rect.dx - x;
+-        rect.y += v;
+-        rect.dy -= v;
+-      } else {
+-        if (flush || v > rect.dx) v = rect.dx;
+-        while (++i < n) {
+-          o = row[i];
+-          o.x = x;
+-          o.y = y;
+-          o.dx = v;
+-          y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
++    return d3_transition(subgroups, ns, id);
++  };
++  d3_transitionPrototype.filter = function(filter) {
++    var subgroups = [], subgroup, group, node;
++    if (typeof filter !== "function") filter = d3_selection_filter(filter);
++    for (var j = 0, m = this.length; j < m; j++) {
++      subgroups.push(subgroup = []);
++      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
++        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
++          subgroup.push(node);
+         }
+-        o.z = false;
+-        o.dy += rect.y + rect.dy - y;
+-        rect.x += v;
+-        rect.dx -= v;
+       }
+     }
+-    function treemap(d) {
+-      var nodes = stickies || hierarchy(d), root = nodes[0];
+-      root.x = root.y = 0;
+-      if (root.value) root.dx = size[0], root.dy = size[1]; else root.dx = root.dy = 0;
+-      if (stickies) hierarchy.revalue(root);
+-      scale([ root ], root.dx * root.dy / root.value);
+-      (stickies ? stickify : squarify)(root);
+-      if (sticky) stickies = nodes;
+-      return nodes;
+-    }
+-    treemap.size = function(x) {
+-      if (!arguments.length) return size;
+-      size = x;
+-      return treemap;
+-    };
+-    treemap.padding = function(x) {
+-      if (!arguments.length) return padding;
+-      function padFunction(node) {
+-        var p = x.call(treemap, node, node.depth);
+-        return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
+-      }
+-      function padConstant(node) {
+-        return d3_layout_treemapPad(node, x);
+-      }
+-      var type;
+-      pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ], 
+-      padConstant) : padConstant;
+-      return treemap;
+-    };
+-    treemap.round = function(x) {
+-      if (!arguments.length) return round != Number;
+-      round = x ? Math.round : Number;
+-      return treemap;
+-    };
+-    treemap.sticky = function(x) {
+-      if (!arguments.length) return sticky;
+-      sticky = x;
+-      stickies = null;
+-      return treemap;
+-    };
+-    treemap.ratio = function(x) {
+-      if (!arguments.length) return ratio;
+-      ratio = x;
+-      return treemap;
+-    };
+-    treemap.mode = function(x) {
+-      if (!arguments.length) return mode;
+-      mode = x + "";
+-      return treemap;
+-    };
+-    return d3_layout_hierarchyRebind(treemap, hierarchy);
++    return d3_transition(subgroups, this.namespace, this.id);
+   };
+-  function d3_layout_treemapPadNull(node) {
+-    return {
+-      x: node.x,
+-      y: node.y,
+-      dx: node.dx,
+-      dy: node.dy
+-    };
++  d3_transitionPrototype.tween = function(name, tween) {
++    var id = this.id, ns = this.namespace;
++    if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
++    return d3_selection_each(this, tween == null ? function(node) {
++      node[ns][id].tween.remove(name);
++    } : function(node) {
++      node[ns][id].tween.set(name, tween);
++    });
++  };
++  function d3_transition_tween(groups, name, value, tween) {
++    var id = groups.id, ns = groups.namespace;
++    return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
++      node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
++    } : (value = tween(value), function(node) {
++      node[ns][id].tween.set(name, value);
++    }));
+   }
+-  function d3_layout_treemapPad(node, padding) {
+-    var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
+-    if (dx < 0) {
+-      x += dx / 2;
+-      dx = 0;
++  d3_transitionPrototype.attr = function(nameNS, value) {
++    if (arguments.length < 2) {
++      for (value in nameNS) this.attr(value, nameNS[value]);
++      return this;
+     }
+-    if (dy < 0) {
+-      y += dy / 2;
+-      dy = 0;
++    var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
++    function attrNull() {
++      this.removeAttribute(name);
+     }
+-    return {
+-      x: x,
+-      y: y,
+-      dx: dx,
+-      dy: dy
+-    };
+-  }
+-  d3.random = {
+-    normal: function(µ, σ) {
+-      var n = arguments.length;
+-      if (n < 2) σ = 1;
+-      if (n < 1) µ = 0;
+-      return function() {
+-        var x, y, r;
+-        do {
+-          x = Math.random() * 2 - 1;
+-          y = Math.random() * 2 - 1;
+-          r = x * x + y * y;
+-        } while (!r || r > 1);
+-        return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
+-      };
+-    },
+-    logNormal: function() {
+-      var random = d3.random.normal.apply(d3, arguments);
+-      return function() {
+-        return Math.exp(random());
++    function attrNullNS() {
++      this.removeAttributeNS(name.space, name.local);
++    }
++    function attrTween(b) {
++      return b == null ? attrNull : (b += "", function() {
++        var a = this.getAttribute(name), i;
++        return a !== b && (i = interpolate(a, b), function(t) {
++          this.setAttribute(name, i(t));
++        });
++      });
++    }
++    function attrTweenNS(b) {
++      return b == null ? attrNullNS : (b += "", function() {
++        var a = this.getAttributeNS(name.space, name.local), i;
++        return a !== b && (i = interpolate(a, b), function(t) {
++          this.setAttributeNS(name.space, name.local, i(t));
++        });
++      });
++    }
++    return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
++  };
++  d3_transitionPrototype.attrTween = function(nameNS, tween) {
++    var name = d3.ns.qualify(nameNS);
++    function attrTween(d, i) {
++      var f = tween.call(this, d, i, this.getAttribute(name));
++      return f && function(t) {
++        this.setAttribute(name, f(t));
+       };
+-    },
+-    bates: function(m) {
+-      var random = d3.random.irwinHall(m);
+-      return function() {
+-        return random() / m;
++    }
++    function attrTweenNS(d, i) {
++      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
++      return f && function(t) {
++        this.setAttributeNS(name.space, name.local, f(t));
+       };
+-    },
+-    irwinHall: function(m) {
+-      return function() {
+-        for (var s = 0, j = 0; j < m; j++) s += Math.random();
+-        return s;
++    }
++    return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
++  };
++  d3_transitionPrototype.style = function(name, value, priority) {
++    var n = arguments.length;
++    if (n < 3) {
++      if (typeof name !== "string") {
++        if (n < 2) value = "";
++        for (priority in name) this.style(priority, name[priority], value);
++        return this;
++      }
++      priority = "";
++    }
++    function styleNull() {
++      this.style.removeProperty(name);
++    }
++    function styleString(b) {
++      return b == null ? styleNull : (b += "", function() {
++        var a = d3_window(this).getComputedStyle(this, null).getPropertyValue(name), i;
++        return a !== b && (i = d3_interpolate(a, b), function(t) {
++          this.style.setProperty(name, i(t), priority);
++        });
++      });
++    }
++    return d3_transition_tween(this, "style." + name, value, styleString);
++  };
++  d3_transitionPrototype.styleTween = function(name, tween, priority) {
++    if (arguments.length < 3) priority = "";
++    function styleTween(d, i) {
++      var f = tween.call(this, d, i, d3_window(this).getComputedStyle(this, null).getPropertyValue(name));
++      return f && function(t) {
++        this.style.setProperty(name, f(t), priority);
+       };
+     }
++    return this.tween("style." + name, styleTween);
+   };
+-  d3.scale = {};
+-  function d3_scaleExtent(domain) {
+-    var start = domain[0], stop = domain[domain.length - 1];
+-    return start < stop ? [ start, stop ] : [ stop, start ];
+-  }
+-  function d3_scaleRange(scale) {
+-    return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
+-  }
+-  function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
+-    var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
+-    return function(x) {
+-      return i(u(x));
++  d3_transitionPrototype.text = function(value) {
++    return d3_transition_tween(this, "text", value, d3_transition_text);
++  };
++  function d3_transition_text(b) {
++    if (b == null) b = "";
++    return function() {
++      this.textContent = b;
+     };
+   }
+-  function d3_scale_nice(domain, nice) {
+-    var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
+-    if (x1 < x0) {
+-      dx = i0, i0 = i1, i1 = dx;
+-      dx = x0, x0 = x1, x1 = dx;
++  d3_transitionPrototype.remove = function() {
++    var ns = this.namespace;
++    return this.each("end.transition", function() {
++      var p;
++      if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
++    });
++  };
++  d3_transitionPrototype.ease = function(value) {
++    var id = this.id, ns = this.namespace;
++    if (arguments.length < 1) return this.node()[ns][id].ease;
++    if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
++    return d3_selection_each(this, function(node) {
++      node[ns][id].ease = value;
++    });
++  };
++  d3_transitionPrototype.delay = function(value) {
++    var id = this.id, ns = this.namespace;
++    if (arguments.length < 1) return this.node()[ns][id].delay;
++    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
++      node[ns][id].delay = +value.call(node, node.__data__, i, j);
++    } : (value = +value, function(node) {
++      node[ns][id].delay = value;
++    }));
++  };
++  d3_transitionPrototype.duration = function(value) {
++    var id = this.id, ns = this.namespace;
++    if (arguments.length < 1) return this.node()[ns][id].duration;
++    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
++      node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
++    } : (value = Math.max(1, value), function(node) {
++      node[ns][id].duration = value;
++    }));
++  };
++  d3_transitionPrototype.each = function(type, listener) {
++    var id = this.id, ns = this.namespace;
++    if (arguments.length < 2) {
++      var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
++      try {
++        d3_transitionInheritId = id;
++        d3_selection_each(this, function(node, i, j) {
++          d3_transitionInherit = node[ns][id];
++          type.call(node, node.__data__, i, j);
++        });
++      } finally {
++        d3_transitionInherit = inherit;
++        d3_transitionInheritId = inheritId;
++      }
++    } else {
++      d3_selection_each(this, function(node) {
++        var transition = node[ns][id];
++        (transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
++      });
+     }
+-    domain[i0] = nice.floor(x0);
+-    domain[i1] = nice.ceil(x1);
+-    return domain;
++    return this;
++  };
++  d3_transitionPrototype.transition = function() {
++    var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
++    for (var j = 0, m = this.length; j < m; j++) {
++      subgroups.push(subgroup = []);
++      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
++        if (node = group[i]) {
++          transition = node[ns][id0];
++          d3_transitionNode(node, i, ns, id1, {
++            time: transition.time,
++            ease: transition.ease,
++            delay: transition.delay + transition.duration,
++            duration: transition.duration
++          });
++        }
++        subgroup.push(node);
++      }
++    }
++    return d3_transition(subgroups, ns, id1);
++  };
++  function d3_transitionNamespace(name) {
++    return name == null ? "__transition__" : "__transition_" + name + "__";
+   }
+-  function d3_scale_niceStep(step) {
+-    return step ? {
+-      floor: function(x) {
+-        return Math.floor(x / step) * step;
+-      },
+-      ceil: function(x) {
+-        return Math.ceil(x / step) * step;
++  function d3_transitionNode(node, i, ns, id, inherit) {
++    var lock = node[ns] || (node[ns] = {
++      active: 0,
++      count: 0
++    }), transition = lock[id], time, timer, duration, ease, tweens;
++    function schedule(elapsed) {
++      var delay = transition.delay;
++      timer.t = delay + time;
++      if (delay <= elapsed) return start(elapsed - delay);
++      timer.c = start;
++    }
++    function start(elapsed) {
++      var activeId = lock.active, active = lock[activeId];
++      if (active) {
++        active.timer.c = null;
++        active.timer.t = NaN;
++        --lock.count;
++        delete lock[activeId];
++        active.event && active.event.interrupt.call(node, node.__data__, active.index);
++      }
++      for (var cancelId in lock) {
++        if (+cancelId < id) {
++          var cancel = lock[cancelId];
++          cancel.timer.c = null;
++          cancel.timer.t = NaN;
++          --lock.count;
++          delete lock[cancelId];
++        }
++      }
++      timer.c = tick;
++      d3_timer(function() {
++        if (timer.c && tick(elapsed || 1)) {
++          timer.c = null;
++          timer.t = NaN;
++        }
++        return 1;
++      }, 0, time);
++      lock.active = id;
++      transition.event && transition.event.start.call(node, node.__data__, i);
++      tweens = [];
++      transition.tween.forEach(function(key, value) {
++        if (value = value.call(node, node.__data__, i)) {
++          tweens.push(value);
++        }
++      });
++      ease = transition.ease;
++      duration = transition.duration;
++    }
++    function tick(elapsed) {
++      var t = elapsed / duration, e = ease(t), n = tweens.length;
++      while (n > 0) {
++        tweens[--n].call(node, e);
++      }
++      if (t >= 1) {
++        transition.event && transition.event.end.call(node, node.__data__, i);
++        if (--lock.count) delete lock[id]; else delete node[ns];
++        return 1;
+       }
+-    } : d3_scale_niceIdentity;
+-  }
+-  var d3_scale_niceIdentity = {
+-    floor: d3_identity,
+-    ceil: d3_identity
+-  };
+-  function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
+-    var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
+-    if (domain[k] < domain[0]) {
+-      domain = domain.slice().reverse();
+-      range = range.slice().reverse();
+     }
+-    while (++j <= k) {
+-      u.push(uninterpolate(domain[j - 1], domain[j]));
+-      i.push(interpolate(range[j - 1], range[j]));
++    if (!transition) {
++      time = inherit.time;
++      timer = d3_timer(schedule, 0, time);
++      transition = lock[id] = {
++        tween: new d3_Map(),
++        time: time,
++        timer: timer,
++        delay: inherit.delay,
++        duration: inherit.duration,
++        ease: inherit.ease,
++        index: i
++      };
++      inherit = null;
++      ++lock.count;
+     }
+-    return function(x) {
+-      var j = d3.bisect(domain, x, 1, k) - 1;
+-      return i[j](u[j](x));
+-    };
+   }
+-  d3.scale.linear = function() {
+-    return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
+-  };
+-  function d3_scale_linear(domain, range, interpolate, clamp) {
+-    var output, input;
+-    function rescale() {
+-      var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
+-      output = linear(domain, range, uninterpolate, interpolate);
+-      input = linear(range, domain, uninterpolate, d3_interpolate);
+-      return scale;
+-    }
+-    function scale(x) {
+-      return output(x);
++  d3.svg.axis = function() {
++    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
++    function axis(g) {
++      g.each(function() {
++        var g = d3.select(this);
++        var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
++        var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
++        var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"), 
++        d3.transition(path));
++        tickEnter.append("line");
++        tickEnter.append("text");
++        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
++        if (orient === "bottom" || orient === "top") {
++          tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
++          text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
++          pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
++        } else {
++          tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
++          text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
++          pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
++        }
++        lineEnter.attr(y2, sign * innerTickSize);
++        textEnter.attr(y1, sign * tickSpacing);
++        lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
++        textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
++        if (scale1.rangeBand) {
++          var x = scale1, dx = x.rangeBand() / 2;
++          scale0 = scale1 = function(d) {
++            return x(d) + dx;
++          };
++        } else if (scale0.rangeBand) {
++          scale0 = scale1;
++        } else {
++          tickExit.call(tickTransform, scale1, scale0);
++        }
++        tickEnter.call(tickTransform, scale0, scale1);
++        tickUpdate.call(tickTransform, scale1, scale1);
++      });
+     }
+-    scale.invert = function(y) {
+-      return input(y);
++    axis.scale = function(x) {
++      if (!arguments.length) return scale;
++      scale = x;
++      return axis;
+     };
+-    scale.domain = function(x) {
+-      if (!arguments.length) return domain;
+-      domain = x.map(Number);
+-      return rescale();
++    axis.orient = function(x) {
++      if (!arguments.length) return orient;
++      orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
++      return axis;
+     };
+-    scale.range = function(x) {
+-      if (!arguments.length) return range;
+-      range = x;
+-      return rescale();
++    axis.ticks = function() {
++      if (!arguments.length) return tickArguments_;
++      tickArguments_ = d3_array(arguments);
++      return axis;
+     };
+-    scale.rangeRound = function(x) {
+-      return scale.range(x).interpolate(d3_interpolateRound);
++    axis.tickValues = function(x) {
++      if (!arguments.length) return tickValues;
++      tickValues = x;
++      return axis;
+     };
+-    scale.clamp = function(x) {
+-      if (!arguments.length) return clamp;
+-      clamp = x;
+-      return rescale();
++    axis.tickFormat = function(x) {
++      if (!arguments.length) return tickFormat_;
++      tickFormat_ = x;
++      return axis;
+     };
+-    scale.interpolate = function(x) {
+-      if (!arguments.length) return interpolate;
+-      interpolate = x;
+-      return rescale();
++    axis.tickSize = function(x) {
++      var n = arguments.length;
++      if (!n) return innerTickSize;
++      innerTickSize = +x;
++      outerTickSize = +arguments[n - 1];
++      return axis;
+     };
+-    scale.ticks = function(m) {
+-      return d3_scale_linearTicks(domain, m);
++    axis.innerTickSize = function(x) {
++      if (!arguments.length) return innerTickSize;
++      innerTickSize = +x;
++      return axis;
+     };
+-    scale.tickFormat = function(m, format) {
+-      return d3_scale_linearTickFormat(domain, m, format);
++    axis.outerTickSize = function(x) {
++      if (!arguments.length) return outerTickSize;
++      outerTickSize = +x;
++      return axis;
+     };
+-    scale.nice = function(m) {
+-      d3_scale_linearNice(domain, m);
+-      return rescale();
++    axis.tickPadding = function(x) {
++      if (!arguments.length) return tickPadding;
++      tickPadding = +x;
++      return axis;
+     };
+-    scale.copy = function() {
+-      return d3_scale_linear(domain, range, interpolate, clamp);
++    axis.tickSubdivide = function() {
++      return arguments.length && axis;
+     };
+-    return rescale();
+-  }
+-  function d3_scale_linearRebind(scale, linear) {
+-    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
+-  }
+-  function d3_scale_linearNice(domain, m) {
+-    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
+-    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
+-    return domain;
+-  }
+-  function d3_scale_linearTickRange(domain, m) {
+-    if (m == null) m = 10;
+-    var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
+-    if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
+-    extent[0] = Math.ceil(extent[0] / step) * step;
+-    extent[1] = Math.floor(extent[1] / step) * step + step * .5;
+-    extent[2] = step;
+-    return extent;
+-  }
+-  function d3_scale_linearTicks(domain, m) {
+-    return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
+-  }
+-  function d3_scale_linearTickFormat(domain, m, format) {
+-    var range = d3_scale_linearTickRange(domain, m);
+-    if (format) {
+-      var match = d3_format_re.exec(format);
+-      match.shift();
+-      if (match[8] === "s") {
+-        var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
+-        if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
+-        match[8] = "f";
+-        format = d3.format(match.join(""));
+-        return function(d) {
+-          return format(prefix.scale(d)) + prefix.symbol;
+-        };
+-      }
+-      if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
+-      format = match.join("");
+-    } else {
+-      format = ",." + d3_scale_linearPrecision(range[2]) + "f";
+-    }
+-    return d3.format(format);
+-  }
+-  var d3_scale_linearFormatSignificant = {
+-    s: 1,
+-    g: 1,
+-    p: 1,
+-    r: 1,
+-    e: 1
++    return axis;
+   };
+-  function d3_scale_linearPrecision(value) {
+-    return -Math.floor(Math.log(value) / Math.LN10 + .01);
++  var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
++    top: 1,
++    right: 1,
++    bottom: 1,
++    left: 1
++  };
++  function d3_svg_axisX(selection, x0, x1) {
++    selection.attr("transform", function(d) {
++      var v0 = x0(d);
++      return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
++    });
+   }
+-  function d3_scale_linearFormatPrecision(type, range) {
+-    var p = d3_scale_linearPrecision(range[2]);
+-    return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
++  function d3_svg_axisY(selection, y0, y1) {
++    selection.attr("transform", function(d) {
++      var v0 = y0(d);
++      return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
++    });
+   }
+-  d3.scale.log = function() {
+-    return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
+-  };
+-  function d3_scale_log(linear, base, positive, domain) {
+-    function log(x) {
+-      return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
++  d3.svg.brush = function() {
++    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
++    function brush(g) {
++      g.each(function() {
++        var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
++        var background = g.selectAll(".background").data([ 0 ]);
++        background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
++        g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
++        var resize = g.selectAll(".resize").data(resizes, d3_identity);
++        resize.exit().remove();
++        resize.enter().append("g").attr("class", function(d) {
++          return "resize " + d;
++        }).style("cursor", function(d) {
++          return d3_svg_brushCursor[d];
++        }).append("rect").attr("x", function(d) {
++          return /[ew]$/.test(d) ? -3 : null;
++        }).attr("y", function(d) {
++          return /^[ns]/.test(d) ? -3 : null;
++        }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
++        resize.style("display", brush.empty() ? "none" : null);
++        var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
++        if (x) {
++          range = d3_scaleRange(x);
++          backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
++          redrawX(gUpdate);
++        }
++        if (y) {
++          range = d3_scaleRange(y);
++          backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
++          redrawY(gUpdate);
++        }
++        redraw(gUpdate);
++      });
+     }
+-    function pow(x) {
+-      return positive ? Math.pow(base, x) : -Math.pow(base, -x);
++    brush.event = function(g) {
++      g.each(function() {
++        var event_ = event.of(this, arguments), extent1 = {
++          x: xExtent,
++          y: yExtent,
++          i: xExtentDomain,
++          j: yExtentDomain
++        }, extent0 = this.__chart__ || extent1;
++        this.__chart__ = extent1;
++        if (d3_transitionInheritId) {
++          d3.select(this).transition().each("start.brush", function() {
++            xExtentDomain = extent0.i;
++            yExtentDomain = extent0.j;
++            xExtent = extent0.x;
++            yExtent = extent0.y;
++            event_({
++              type: "brushstart"
++            });
++          }).tween("brush:brush", function() {
++            var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
++            xExtentDomain = yExtentDomain = null;
++            return function(t) {
++              xExtent = extent1.x = xi(t);
++              yExtent = extent1.y = yi(t);
++              event_({
++                type: "brush",
++                mode: "resize"
++              });
++            };
++          }).each("end.brush", function() {
++            xExtentDomain = extent1.i;
++            yExtentDomain = extent1.j;
++            event_({
++              type: "brush",
++              mode: "resize"
++            });
++            event_({
++              type: "brushend"
++            });
++          });
++        } else {
++          event_({
++            type: "brushstart"
++          });
++          event_({
++            type: "brush",
++            mode: "resize"
++          });
++          event_({
++            type: "brushend"
++          });
++        }
++      });
++    };
++    function redraw(g) {
++      g.selectAll(".resize").attr("transform", function(d) {
++        return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
++      });
+     }
+-    function scale(x) {
+-      return linear(log(x));
++    function redrawX(g) {
++      g.select(".extent").attr("x", xExtent[0]);
++      g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
+     }
+-    scale.invert = function(x) {
+-      return pow(linear.invert(x));
+-    };
+-    scale.domain = function(x) {
+-      if (!arguments.length) return domain;
+-      positive = x[0] >= 0;
+-      linear.domain((domain = x.map(Number)).map(log));
+-      return scale;
++    function redrawY(g) {
++      g.select(".extent").attr("y", yExtent[0]);
++      g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
++    }
++    function brushstart() {
++      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(target), center, origin = d3.mouse(target), offset;
++      var w = d3.select(d3_window(target)).on("keydown.brush", keydown).on("keyup.brush", keyup);
++      if (d3.event.changedTouches) {
++        w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
++      } else {
++        w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
++      }
++      g.interrupt().selectAll("*").interrupt();
++      if (dragging) {
++        origin[0] = xExtent[0] - origin[0];
++        origin[1] = yExtent[0] - origin[1];
++      } else if (resizing) {
++        var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
++        offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
++        origin[0] = xExtent[ex];
++        origin[1] = yExtent[ey];
++      } else if (d3.event.altKey) center = origin.slice();
++      g.style("pointer-events", "none").selectAll(".resize").style("display", null);
++      d3.select("body").style("cursor", eventTarget.style("cursor"));
++      event_({
++        type: "brushstart"
++      });
++      brushmove();
++      function keydown() {
++        if (d3.event.keyCode == 32) {
++          if (!dragging) {
++            center = null;
++            origin[0] -= xExtent[1];
++            origin[1] -= yExtent[1];
++            dragging = 2;
++          }
++          d3_eventPreventDefault();
++        }
++      }
++      function keyup() {
++        if (d3.event.keyCode == 32 && dragging == 2) {
++          origin[0] += xExtent[1];
++          origin[1] += yExtent[1];
++          dragging = 0;
++          d3_eventPreventDefault();
++        }
++      }
++      function brushmove() {
++        var point = d3.mouse(target), moved = false;
++        if (offset) {
++          point[0] += offset[0];
++          point[1] += offset[1];
++        }
++        if (!dragging) {
++          if (d3.event.altKey) {
++            if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
++            origin[0] = xExtent[+(point[0] < center[0])];
++            origin[1] = yExtent[+(point[1] < center[1])];
++          } else center = null;
++        }
++        if (resizingX && move1(point, x, 0)) {
++          redrawX(g);
++          moved = true;
++        }
++        if (resizingY && move1(point, y, 1)) {
++          redrawY(g);
++          moved = true;
++        }
++        if (moved) {
++          redraw(g);
++          event_({
++            type: "brush",
++            mode: dragging ? "move" : "resize"
++          });
++        }
++      }
++      function move1(point, scale, i) {
++        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
++        if (dragging) {
++          r0 -= position;
++          r1 -= size + position;
++        }
++        min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
++        if (dragging) {
++          max = (min += position) + size;
++        } else {
++          if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
++          if (position < min) {
++            max = min;
++            min = position;
++          } else {
++            max = position;
++          }
++        }
++        if (extent[0] != min || extent[1] != max) {
++          if (i) yExtentDomain = null; else xExtentDomain = null;
++          extent[0] = min;
++          extent[1] = max;
++          return true;
++        }
++      }
++      function brushend() {
++        brushmove();
++        g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
++        d3.select("body").style("cursor", null);
++        w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
++        dragRestore();
++        event_({
++          type: "brushend"
++        });
++      }
++    }
++    brush.x = function(z) {
++      if (!arguments.length) return x;
++      x = z;
++      resizes = d3_svg_brushResizes[!x << 1 | !y];
++      return brush;
+     };
+-    scale.base = function(_) {
+-      if (!arguments.length) return base;
+-      base = +_;
+-      linear.domain(domain.map(log));
+-      return scale;
++    brush.y = function(z) {
++      if (!arguments.length) return y;
++      y = z;
++      resizes = d3_svg_brushResizes[!x << 1 | !y];
++      return brush;
+     };
+-    scale.nice = function() {
+-      var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
+-      linear.domain(niced);
+-      domain = niced.map(pow);
+-      return scale;
++    brush.clamp = function(z) {
++      if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
++      if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
++      return brush;
+     };
+-    scale.ticks = function() {
+-      var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
+-      if (isFinite(j - i)) {
+-        if (positive) {
+-          for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
+-          ticks.push(pow(i));
+-        } else {
+-          ticks.push(pow(i));
+-          for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
++    brush.extent = function(z) {
++      var x0, x1, y0, y1, t;
++      if (!arguments.length) {
++        if (x) {
++          if (xExtentDomain) {
++            x0 = xExtentDomain[0], x1 = xExtentDomain[1];
++          } else {
++            x0 = xExtent[0], x1 = xExtent[1];
++            if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
++            if (x1 < x0) t = x0, x0 = x1, x1 = t;
++          }
+         }
+-        for (i = 0; ticks[i] < u; i++) {}
+-        for (j = ticks.length; ticks[j - 1] > v; j--) {}
+-        ticks = ticks.slice(i, j);
++        if (y) {
++          if (yExtentDomain) {
++            y0 = yExtentDomain[0], y1 = yExtentDomain[1];
++          } else {
++            y0 = yExtent[0], y1 = yExtent[1];
++            if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
++            if (y1 < y0) t = y0, y0 = y1, y1 = t;
++          }
++        }
++        return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
++      }
++      if (x) {
++        x0 = z[0], x1 = z[1];
++        if (y) x0 = x0[0], x1 = x1[0];
++        xExtentDomain = [ x0, x1 ];
++        if (x.invert) x0 = x(x0), x1 = x(x1);
++        if (x1 < x0) t = x0, x0 = x1, x1 = t;
++        if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
+       }
+-      return ticks;
++      if (y) {
++        y0 = z[0], y1 = z[1];
++        if (x) y0 = y0[1], y1 = y1[1];
++        yExtentDomain = [ y0, y1 ];
++        if (y.invert) y0 = y(y0), y1 = y(y1);
++        if (y1 < y0) t = y0, y0 = y1, y1 = t;
++        if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
++      }
++      return brush;
+     };
+-    scale.tickFormat = function(n, format) {
+-      if (!arguments.length) return d3_scale_logFormat;
+-      if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
+-      var k = Math.max(1, base * n / scale.ticks().length);
+-      return function(d) {
+-        var i = d / pow(Math.round(log(d)));
+-        if (i * base < base - .5) i *= base;
+-        return i <= k ? format(d) : "";
+-      };
++    brush.clear = function() {
++      if (!brush.empty()) {
++        xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
++        xExtentDomain = yExtentDomain = null;
++      }
++      return brush;
+     };
+-    scale.copy = function() {
+-      return d3_scale_log(linear.copy(), base, positive, domain);
++    brush.empty = function() {
++      return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
+     };
+-    return d3_scale_linearRebind(scale, linear);
+-  }
+-  var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
+-    floor: function(x) {
+-      return -Math.ceil(-x);
+-    },
+-    ceil: function(x) {
+-      return -Math.floor(-x);
+-    }
++    return d3.rebind(brush, event, "on");
+   };
+-  d3.scale.pow = function() {
+-    return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
++  var d3_svg_brushCursor = {
++    n: "ns-resize",
++    e: "ew-resize",
++    s: "ns-resize",
++    w: "ew-resize",
++    nw: "nwse-resize",
++    ne: "nesw-resize",
++    se: "nwse-resize",
++    sw: "nesw-resize"
+   };
+-  function d3_scale_pow(linear, exponent, domain) {
+-    var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
++  var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
++  var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
++  var d3_time_formatUtc = d3_time_format.utc;
++  var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
++  d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
++  function d3_time_formatIsoNative(date) {
++    return date.toISOString();
++  }
++  d3_time_formatIsoNative.parse = function(string) {
++    var date = new Date(string);
++    return isNaN(date) ? null : date;
++  };
++  d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
++  d3_time.second = d3_time_interval(function(date) {
++    return new d3_date(Math.floor(date / 1e3) * 1e3);
++  }, function(date, offset) {
++    date.setTime(date.getTime() + Math.floor(offset) * 1e3);
++  }, function(date) {
++    return date.getSeconds();
++  });
++  d3_time.seconds = d3_time.second.range;
++  d3_time.seconds.utc = d3_time.second.utc.range;
++  d3_time.minute = d3_time_interval(function(date) {
++    return new d3_date(Math.floor(date / 6e4) * 6e4);
++  }, function(date, offset) {
++    date.setTime(date.getTime() + Math.floor(offset) * 6e4);
++  }, function(date) {
++    return date.getMinutes();
++  });
++  d3_time.minutes = d3_time.minute.range;
++  d3_time.minutes.utc = d3_time.minute.utc.range;
++  d3_time.hour = d3_time_interval(function(date) {
++    var timezone = date.getTimezoneOffset() / 60;
++    return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
++  }, function(date, offset) {
++    date.setTime(date.getTime() + Math.floor(offset) * 36e5);
++  }, function(date) {
++    return date.getHours();
++  });
++  d3_time.hours = d3_time.hour.range;
++  d3_time.hours.utc = d3_time.hour.utc.range;
++  d3_time.month = d3_time_interval(function(date) {
++    date = d3_time.day(date);
++    date.setDate(1);
++    return date;
++  }, function(date, offset) {
++    date.setMonth(date.getMonth() + offset);
++  }, function(date) {
++    return date.getMonth();
++  });
++  d3_time.months = d3_time.month.range;
++  d3_time.months.utc = d3_time.month.utc.range;
++  function d3_time_scale(linear, methods, format) {
+     function scale(x) {
+-      return linear(powp(x));
++      return linear(x);
+     }
+     scale.invert = function(x) {
+-      return powb(linear.invert(x));
++      return d3_time_scaleDate(linear.invert(x));
+     };
+     scale.domain = function(x) {
+-      if (!arguments.length) return domain;
+-      linear.domain((domain = x.map(Number)).map(powp));
++      if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
++      linear.domain(x);
+       return scale;
+     };
+-    scale.ticks = function(m) {
+-      return d3_scale_linearTicks(domain, m);
+-    };
+-    scale.tickFormat = function(m, format) {
+-      return d3_scale_linearTickFormat(domain, m, format);
++    function tickMethod(extent, count) {
++      var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
++      return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
++        return d / 31536e6;
++      }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
++    }
++    scale.nice = function(interval, skip) {
++      var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
++      if (method) interval = method[0], skip = method[1];
++      function skipped(date) {
++        return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
++      }
++      return scale.domain(d3_scale_nice(domain, skip > 1 ? {
++        floor: function(date) {
++          while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
++          return date;
++        },
++        ceil: function(date) {
++          while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
++          return date;
++        }
++      } : interval));
+     };
+-    scale.nice = function(m) {
+-      return scale.domain(d3_scale_linearNice(domain, m));
++    scale.ticks = function(interval, skip) {
++      var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
++        range: interval
++      }, skip ];
++      if (method) interval = method[0], skip = method[1];
++      return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
+     };
+-    scale.exponent = function(x) {
+-      if (!arguments.length) return exponent;
+-      powp = d3_scale_powPow(exponent = x);
+-      powb = d3_scale_powPow(1 / exponent);
+-      linear.domain(domain.map(powp));
+-      return scale;
++    scale.tickFormat = function() {
++      return format;
+     };
+     scale.copy = function() {
+-      return d3_scale_pow(linear.copy(), exponent, domain);
++      return d3_time_scale(linear.copy(), methods, format);
+     };
+     return d3_scale_linearRebind(scale, linear);
+   }
+-  function d3_scale_powPow(e) {
+-    return function(x) {
+-      return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
+-    };
+-  }
+-  d3.scale.sqrt = function() {
+-    return d3.scale.pow().exponent(.5);
+-  };
+-  d3.scale.ordinal = function() {
+-    return d3_scale_ordinal([], {
+-      t: "range",
+-      a: [ [] ]
+-    });
+-  };
+-  function d3_scale_ordinal(domain, ranger) {
+-    var index, range, rangeBand;
+-    function scale(x) {
+-      return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
+-    }
+-    function steps(start, step) {
+-      return d3.range(domain.length).map(function(i) {
+-        return start + step * i;
+-      });
+-    }
+-    scale.domain = function(x) {
+-      if (!arguments.length) return domain;
+-      domain = [];
+-      index = new d3_Map();
+-      var i = -1, n = x.length, xi;
+-      while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
+-      return scale[ranger.t].apply(scale, ranger.a);
+-    };
+-    scale.range = function(x) {
+-      if (!arguments.length) return range;
+-      range = x;
+-      rangeBand = 0;
+-      ranger = {
+-        t: "range",
+-        a: arguments
+-      };
+-      return scale;
+-    };
+-    scale.rangePoints = function(x, padding) {
+-      if (arguments.length < 2) padding = 0;
+-      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2, 
+-      0) : (stop - start) / (domain.length - 1 + padding);
+-      range = steps(start + step * padding / 2, step);
+-      rangeBand = 0;
+-      ranger = {
+-        t: "rangePoints",
+-        a: arguments
+-      };
+-      return scale;
+-    };
+-    scale.rangeRoundPoints = function(x, padding) {
+-      if (arguments.length < 2) padding = 0;
+-      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2), 
+-      0) : (stop - start) / (domain.length - 1 + padding) | 0;
+-      range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
+-      rangeBand = 0;
+-      ranger = {
+-        t: "rangeRoundPoints",
+-        a: arguments
+-      };
+-      return scale;
+-    };
+-    scale.rangeBands = function(x, padding, outerPadding) {
+-      if (arguments.length < 2) padding = 0;
+-      if (arguments.length < 3) outerPadding = padding;
+-      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
+-      range = steps(start + step * outerPadding, step);
+-      if (reverse) range.reverse();
+-      rangeBand = step * (1 - padding);
+-      ranger = {
+-        t: "rangeBands",
+-        a: arguments
+-      };
+-      return scale;
+-    };
+-    scale.rangeRoundBands = function(x, padding, outerPadding) {
+-      if (arguments.length < 2) padding = 0;
+-      if (arguments.length < 3) outerPadding = padding;
+-      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
+-      range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
+-      if (reverse) range.reverse();
+-      rangeBand = Math.round(step * (1 - padding));
+-      ranger = {
+-        t: "rangeRoundBands",
+-        a: arguments
+-      };
+-      return scale;
+-    };
+-    scale.rangeBand = function() {
+-      return rangeBand;
+-    };
+-    scale.rangeExtent = function() {
+-      return d3_scaleExtent(ranger.a[0]);
+-    };
+-    scale.copy = function() {
+-      return d3_scale_ordinal(domain, ranger);
+-    };
+-    return scale.domain(domain);
++  function d3_time_scaleDate(t) {
++    return new Date(t);
+   }
+-  d3.scale.category10 = function() {
+-    return d3.scale.ordinal().range(d3_category10);
+-  };
+-  d3.scale.category20 = function() {
+-    return d3.scale.ordinal().range(d3_category20);
++  var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
++  var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
++  var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
++    return d.getMilliseconds();
++  } ], [ ":%S", function(d) {
++    return d.getSeconds();
++  } ], [ "%I:%M", function(d) {
++    return d.getMinutes();
++  } ], [ "%I %p", function(d) {
++    return d.getHours();
++  } ], [ "%a %d", function(d) {
++    return d.getDay() && d.getDate() != 1;
++  } ], [ "%b %d", function(d) {
++    return d.getDate() != 1;
++  } ], [ "%B", function(d) {
++    return d.getMonth();
++  } ], [ "%Y", d3_true ] ]);
++  var d3_time_scaleMilliseconds = {
++    range: function(start, stop, step) {
++      return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
++    },
++    floor: d3_identity,
++    ceil: d3_identity
+   };
+-  d3.scale.category20b = function() {
+-    return d3.scale.ordinal().range(d3_category20b);
++  d3_time_scaleLocalMethods.year = d3_time.year;
++  d3_time.scale = function() {
++    return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
+   };
+-  d3.scale.category20c = function() {
+-    return d3.scale.ordinal().range(d3_category20c);
++  var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
++    return [ m[0].utc, m[1] ];
++  });
++  var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
++    return d.getUTCMilliseconds();
++  } ], [ ":%S", function(d) {
++    return d.getUTCSeconds();
++  } ], [ "%I:%M", function(d) {
++    return d.getUTCMinutes();
++  } ], [ "%I %p", function(d) {
++    return d.getUTCHours();
++  } ], [ "%a %d", function(d) {
++    return d.getUTCDay() && d.getUTCDate() != 1;
++  } ], [ "%b %d", function(d) {
++    return d.getUTCDate() != 1;
++  } ], [ "%B", function(d) {
++    return d.getUTCMonth();
++  } ], [ "%Y", d3_true ] ]);
++  d3_time_scaleUtcMethods.year = d3_time.year.utc;
++  d3_time.scale.utc = function() {
++    return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
+   };
+-  var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
+-  var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
+-  var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
+-  var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
+-  d3.scale.quantile = function() {
+-    return d3_scale_quantile([], []);
++  d3.text = d3_xhrType(function(request) {
++    return request.responseText;
++  });
++  d3.json = function(url, callback) {
++    return d3_xhr(url, "application/json", d3_json, callback);
+   };
+-  function d3_scale_quantile(domain, range) {
+-    var thresholds;
+-    function rescale() {
+-      var k = 0, q = range.length;
+-      thresholds = [];
+-      while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
+-      return scale;
+-    }
+-    function scale(x) {
+-      if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
+-    }
+-    scale.domain = function(x) {
+-      if (!arguments.length) return domain;
+-      domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
+-      return rescale();
+-    };
+-    scale.range = function(x) {
+-      if (!arguments.length) return range;
+-      range = x;
+-      return rescale();
+-    };
+-    scale.quantiles = function() {
+-      return thresholds;
+-    };
+-    scale.invertExtent = function(y) {
+-      y = range.indexOf(y);
+-      return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
+-    };
+-    scale.copy = function() {
+-      return d3_scale_quantile(domain, range);
+-    };
+-    return rescale();
++  function d3_json(request) {
++    return JSON.parse(request.responseText);
+   }
+-  d3.scale.quantize = function() {
+-    return d3_scale_quantize(0, 1, [ 0, 1 ]);
++  d3.html = function(url, callback) {
++    return d3_xhr(url, "text/html", d3_html, callback);
+   };
+-  function d3_scale_quantize(x0, x1, range) {
+-    var kx, i;
+-    function scale(x) {
+-      return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
+-    }
+-    function rescale() {
+-      kx = range.length / (x1 - x0);
+-      i = range.length - 1;
+-      return scale;
++  function d3_html(request) {
++    var range = d3_document.createRange();
++    range.selectNode(d3_document.body);
++    return range.createContextualFragment(request.responseText);
++  }
++  d3.xml = d3_xhrType(function(request) {
++    return request.responseXML;
++  });
++  if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
++}();
++},{}],75:[function(require,module,exports){
++"use strict"
++
++var ch = require("incremental-convex-hull")
++var uniq = require("uniq")
++
++module.exports = triangulate
++
++function LiftedPoint(p, i) {
++  this.point = p
++  this.index = i
++}
++
++function compareLifted(a, b) {
++  var ap = a.point
++  var bp = b.point
++  var d = ap.length
++  for(var i=0; i<d; ++i) {
++    var s = bp[i] - ap[i]
++    if(s) {
++      return s
+     }
+-    scale.domain = function(x) {
+-      if (!arguments.length) return [ x0, x1 ];
+-      x0 = +x[0];
+-      x1 = +x[x.length - 1];
+-      return rescale();
+-    };
+-    scale.range = function(x) {
+-      if (!arguments.length) return range;
+-      range = x;
+-      return rescale();
+-    };
+-    scale.invertExtent = function(y) {
+-      y = range.indexOf(y);
+-      y = y < 0 ? NaN : y / kx + x0;
+-      return [ y, y + 1 / kx ];
+-    };
+-    scale.copy = function() {
+-      return d3_scale_quantize(x0, x1, range);
+-    };
+-    return rescale();
+   }
+-  d3.scale.threshold = function() {
+-    return d3_scale_threshold([ .5 ], [ 0, 1 ]);
+-  };
+-  function d3_scale_threshold(domain, range) {
+-    function scale(x) {
+-      if (x <= x) return range[d3.bisect(domain, x)];
++  return 0
++}
++
++function triangulate1D(n, points, includePointAtInfinity) {
++  if(n === 1) {
++    if(includePointAtInfinity) {
++      return [ [-1, 0] ]
++    } else {
++      return []
+     }
+-    scale.domain = function(_) {
+-      if (!arguments.length) return domain;
+-      domain = _;
+-      return scale;
+-    };
+-    scale.range = function(_) {
+-      if (!arguments.length) return range;
+-      range = _;
+-      return scale;
+-    };
+-    scale.invertExtent = function(y) {
+-      y = range.indexOf(y);
+-      return [ domain[y - 1], domain[y] ];
+-    };
+-    scale.copy = function() {
+-      return d3_scale_threshold(domain, range);
+-    };
+-    return scale;
+   }
+-  d3.scale.identity = function() {
+-    return d3_scale_identity([ 0, 1 ]);
+-  };
+-  function d3_scale_identity(domain) {
+-    function identity(x) {
+-      return +x;
++  var lifted = points.map(function(p, i) {
++    return [ p[0], i ]
++  })
++  lifted.sort(function(a,b) {
++    return a[0] - b[0]
++  })
++  var cells = new Array(n - 1)
++  for(var i=1; i<n; ++i) {
++    var a = lifted[i-1]
++    var b = lifted[i]
++    cells[i-1] = [ a[1], b[1] ]
++  }
++  if(includePointAtInfinity) {
++    cells.push(
++      [ -1, cells[0][1], ],
++      [ cells[n-1][1], -1 ])
++  }
++  return cells
++}
++
++function triangulate(points, includePointAtInfinity) {
++  var n = points.length
++  if(n === 0) {
++    return []
++  }
++  
++  var d = points[0].length
++  if(d < 1) {
++    return []
++  }
++
++  //Special case:  For 1D we can just sort the points
++  if(d === 1) {
++    return triangulate1D(n, points, includePointAtInfinity)
++  }
++  
++  //Lift points, sort
++  var lifted = new Array(n)
++  var upper = 1.0
++  for(var i=0; i<n; ++i) {
++    var p = points[i]
++    var x = new Array(d+1)
++    var l = 0.0
++    for(var j=0; j<d; ++j) {
++      var v = p[j]
++      x[j] = v
++      l += v * v
+     }
+-    identity.invert = identity;
+-    identity.domain = identity.range = function(x) {
+-      if (!arguments.length) return domain;
+-      domain = x.map(identity);
+-      return identity;
+-    };
+-    identity.ticks = function(m) {
+-      return d3_scale_linearTicks(domain, m);
+-    };
+-    identity.tickFormat = function(m, format) {
+-      return d3_scale_linearTickFormat(domain, m, format);
+-    };
+-    identity.copy = function() {
+-      return d3_scale_identity(domain);
+-    };
+-    return identity;
++    x[d] = l
++    lifted[i] = new LiftedPoint(x, i)
++    upper = Math.max(l, upper)
+   }
+-  d3.svg = {};
+-  function d3_zero() {
+-    return 0;
++  uniq(lifted, compareLifted)
++  
++  //Double points
++  n = lifted.length
++
++  //Create new list of points
++  var dpoints = new Array(n + d + 1)
++  var dindex = new Array(n + d + 1)
++
++  //Add steiner points at top
++  var u = (d+1) * (d+1) * upper
++  var y = new Array(d+1)
++  for(var i=0; i<=d; ++i) {
++    y[i] = 0.0
+   }
+-  d3.svg.arc = function() {
+-    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
+-    function arc() {
+-      var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
+-      if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
+-      if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
+-      var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
+-      if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
+-        rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
+-        if (!cw) p1 *= -1;
+-        if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
+-        if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
+-      }
+-      if (r1) {
+-        x0 = r1 * Math.cos(a0 + p1);
+-        y0 = r1 * Math.sin(a0 + p1);
+-        x1 = r1 * Math.cos(a1 - p1);
+-        y1 = r1 * Math.sin(a1 - p1);
+-        var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
+-        if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
+-          var h1 = (a0 + a1) / 2;
+-          x0 = r1 * Math.cos(h1);
+-          y0 = r1 * Math.sin(h1);
+-          x1 = y1 = null;
+-        }
+-      } else {
+-        x0 = y0 = 0;
+-      }
+-      if (r0) {
+-        x2 = r0 * Math.cos(a1 - p0);
+-        y2 = r0 * Math.sin(a1 - p0);
+-        x3 = r0 * Math.cos(a0 + p0);
+-        y3 = r0 * Math.sin(a0 + p0);
+-        var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
+-        if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
+-          var h0 = (a0 + a1) / 2;
+-          x2 = r0 * Math.cos(h0);
+-          y2 = r0 * Math.sin(h0);
+-          x3 = y3 = null;
+-        }
+-      } else {
+-        x2 = y2 = 0;
+-      }
+-      if (da > ε && (rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
+-        cr = r0 < r1 ^ cw ? 0 : 1;
+-        var rc1 = rc, rc0 = rc;
+-        if (da < π) {
+-          var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
+-          rc0 = Math.min(rc, (r0 - lc) / (kc - 1));
+-          rc1 = Math.min(rc, (r1 - lc) / (kc + 1));
+-        }
+-        if (x1 != null) {
+-          var t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
+-          if (rc === rc1) {
+-            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
+-          } else {
+-            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
++  y[d] = u
++
++  dpoints[0] = y.slice()
++  dindex[0] = -1
++
++  for(var i=0; i<=d; ++i) {
++    var x = y.slice()
++    x[i] = 1
++    dpoints[i+1] = x
++    dindex[i+1] = -1
++  }
++
++  //Copy rest of the points over
++  for(var i=0; i<n; ++i) {
++    var h = lifted[i]
++    dpoints[i + d + 1] = h.point
++    dindex[i + d + 1] =  h.index
++  }
++
++  //Construct convex hull
++  var hull = ch(dpoints, false)
++  if(includePointAtInfinity) {
++    hull = hull.filter(function(cell) {
++      var count = 0
++      for(var j=0; j<=d; ++j) {
++        var v = dindex[cell[j]]
++        if(v < 0) {
++          if(++count >= 2) {
++            return false
+           }
+-        } else {
+-          path.push("M", x0, ",", y0);
+         }
+-        if (x3 != null) {
+-          var t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
+-          if (rc === rc0) {
+-            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
+-          } else {
+-            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
+-          }
+-        } else {
+-          path.push("L", x2, ",", y2);
++        cell[j] = v
++      }
++      return true
++    })
++  } else {
++    hull = hull.filter(function(cell) {
++      for(var i=0; i<=d; ++i) {
++        var v = dindex[cell[i]]
++        if(v < 0) {
++          return false
+         }
+-      } else {
+-        path.push("M", x0, ",", y0);
+-        if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
+-        path.push("L", x2, ",", y2);
+-        if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
++        cell[i] = v
+       }
+-      path.push("Z");
+-      return path.join("");
++      return true
++    })
++  }
++
++  if(d & 1) {
++    for(var i=0; i<hull.length; ++i) {
++      var h = hull[i]
++      var x = h[0]
++      h[0] = h[1]
++      h[1] = x
+     }
+-    function circleSegment(r1, cw) {
+-      return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
++  }
++
++  return hull
++}
++},{"incremental-convex-hull":165,"uniq":248}],76:[function(require,module,exports){
++(function (Buffer){
++var hasTypedArrays = false
++if(typeof Float64Array !== "undefined") {
++  var DOUBLE_VIEW = new Float64Array(1)
++    , UINT_VIEW   = new Uint32Array(DOUBLE_VIEW.buffer)
++  DOUBLE_VIEW[0] = 1.0
++  hasTypedArrays = true
++  if(UINT_VIEW[1] === 0x3ff00000) {
++    //Use little endian
++    module.exports = function doubleBitsLE(n) {
++      DOUBLE_VIEW[0] = n
++      return [ UINT_VIEW[0], UINT_VIEW[1] ]
+     }
+-    arc.innerRadius = function(v) {
+-      if (!arguments.length) return innerRadius;
+-      innerRadius = d3_functor(v);
+-      return arc;
+-    };
+-    arc.outerRadius = function(v) {
+-      if (!arguments.length) return outerRadius;
+-      outerRadius = d3_functor(v);
+-      return arc;
+-    };
+-    arc.cornerRadius = function(v) {
+-      if (!arguments.length) return cornerRadius;
+-      cornerRadius = d3_functor(v);
+-      return arc;
+-    };
+-    arc.padRadius = function(v) {
+-      if (!arguments.length) return padRadius;
+-      padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
+-      return arc;
+-    };
+-    arc.startAngle = function(v) {
+-      if (!arguments.length) return startAngle;
+-      startAngle = d3_functor(v);
+-      return arc;
+-    };
+-    arc.endAngle = function(v) {
+-      if (!arguments.length) return endAngle;
+-      endAngle = d3_functor(v);
+-      return arc;
+-    };
+-    arc.padAngle = function(v) {
+-      if (!arguments.length) return padAngle;
+-      padAngle = d3_functor(v);
+-      return arc;
+-    };
+-    arc.centroid = function() {
+-      var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
+-      return [ Math.cos(a) * r, Math.sin(a) * r ];
+-    };
+-    return arc;
+-  };
+-  var d3_svg_arcAuto = "auto";
+-  function d3_svg_arcInnerRadius(d) {
+-    return d.innerRadius;
++    function toDoubleLE(lo, hi) {
++      UINT_VIEW[0] = lo
++      UINT_VIEW[1] = hi
++      return DOUBLE_VIEW[0]
++    }
++    module.exports.pack = toDoubleLE
++    function lowUintLE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[0]
++    }
++    module.exports.lo = lowUintLE
++    function highUintLE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[1]
++    }
++    module.exports.hi = highUintLE
++  } else if(UINT_VIEW[0] === 0x3ff00000) {
++    //Use big endian
++    module.exports = function doubleBitsBE(n) {
++      DOUBLE_VIEW[0] = n
++      return [ UINT_VIEW[1], UINT_VIEW[0] ]
++    }
++    function toDoubleBE(lo, hi) {
++      UINT_VIEW[1] = lo
++      UINT_VIEW[0] = hi
++      return DOUBLE_VIEW[0]
++    }
++    module.exports.pack = toDoubleBE
++    function lowUintBE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[1]
++    }
++    module.exports.lo = lowUintBE
++    function highUintBE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[0]
++    }
++    module.exports.hi = highUintBE
++  } else {
++    hasTypedArrays = false
+   }
+-  function d3_svg_arcOuterRadius(d) {
+-    return d.outerRadius;
++}
++if(!hasTypedArrays) {
++  var buffer = new Buffer(8)
++  module.exports = function doubleBits(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return [ buffer.readUInt32LE(0, true), buffer.readUInt32LE(4, true) ]
+   }
+-  function d3_svg_arcStartAngle(d) {
+-    return d.startAngle;
++  function toDouble(lo, hi) {
++    buffer.writeUInt32LE(lo, 0, true)
++    buffer.writeUInt32LE(hi, 4, true)
++    return buffer.readDoubleLE(0, true)
+   }
+-  function d3_svg_arcEndAngle(d) {
+-    return d.endAngle;
++  module.exports.pack = toDouble  
++  function lowUint(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return buffer.readUInt32LE(0, true)
+   }
+-  function d3_svg_arcPadAngle(d) {
+-    return d && d.padAngle;
++  module.exports.lo = lowUint
++  function highUint(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return buffer.readUInt32LE(4, true)
+   }
+-  function d3_svg_arcSweep(x0, y0, x1, y1) {
+-    return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
++  module.exports.hi = highUint
++}
++
++module.exports.sign = function(n) {
++  return module.exports.hi(n) >>> 31
++}
++
++module.exports.exponent = function(n) {
++  var b = module.exports.hi(n)
++  return ((b<<1) >>> 21) - 1023
++}
++
++module.exports.fraction = function(n) {
++  var lo = module.exports.lo(n)
++  var hi = module.exports.hi(n)
++  var b = hi & ((1<<20) - 1)
++  if(hi & 0x7ff00000) {
++    b += (1<<20)
+   }
+-  function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
+-    var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(Math.max(0, r * r * d2 - D * D)), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
+-    if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
+-    return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
++  return [lo, b]
++}
++
++module.exports.denormalized = function(n) {
++  var hi = module.exports.hi(n)
++  return !(hi & 0x7ff00000)
++}
++}).call(this,require("buffer").Buffer)
++},{"buffer":45}],77:[function(require,module,exports){
++"use strict"
++
++function dupe_array(count, value, i) {
++  var c = count[i]|0
++  if(c <= 0) {
++    return []
+   }
+-  function d3_svg_line(projection) {
+-    var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
+-    function line(data) {
+-      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
+-      function segment() {
+-        segments.push("M", interpolate(projection(points), tension));
++  var result = new Array(c), j
++  if(i === count.length-1) {
++    for(j=0; j<c; ++j) {
++      result[j] = value
++    }
++  } else {
++    for(j=0; j<c; ++j) {
++      result[j] = dupe_array(count, value, i+1)
++    }
++  }
++  return result
++}
++
++function dupe_number(count, value) {
++  var result, i
++  result = new Array(count)
++  for(i=0; i<count; ++i) {
++    result[i] = value
++  }
++  return result
++}
++
++function dupe(count, value) {
++  if(typeof value === "undefined") {
++    value = 0
++  }
++  switch(typeof count) {
++    case "number":
++      if(count > 0) {
++        return dupe_number(count|0, value)
+       }
+-      while (++i < n) {
+-        if (defined.call(this, d = data[i], i)) {
+-          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
+-        } else if (points.length) {
+-          segment();
+-          points = [];
+-        }
++    break
++    case "object":
++      if(typeof (count.length) === "number") {
++        return dupe_array(count, value, 0)
+       }
+-      if (points.length) segment();
+-      return segments.length ? segments.join("") : null;
++    break
++  }
++  return []
++}
++
++module.exports = dupe
++},{}],78:[function(require,module,exports){
++"use strict"
++
++module.exports = edgeToAdjacency
++
++var uniq = require("uniq")
++
++function edgeToAdjacency(edges, numVertices) {
++  var numEdges = edges.length
++  if(typeof numVertices !== "number") {
++    numVertices = 0
++    for(var i=0; i<numEdges; ++i) {
++      var e = edges[i]
++      numVertices = Math.max(numVertices, e[0], e[1])
+     }
+-    line.x = function(_) {
+-      if (!arguments.length) return x;
+-      x = _;
+-      return line;
+-    };
+-    line.y = function(_) {
+-      if (!arguments.length) return y;
+-      y = _;
+-      return line;
+-    };
+-    line.defined = function(_) {
+-      if (!arguments.length) return defined;
+-      defined = _;
+-      return line;
+-    };
+-    line.interpolate = function(_) {
+-      if (!arguments.length) return interpolateKey;
+-      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
+-      return line;
+-    };
+-    line.tension = function(_) {
+-      if (!arguments.length) return tension;
+-      tension = _;
+-      return line;
+-    };
+-    return line;
++    numVertices = (numVertices|0) + 1
+   }
+-  d3.svg.line = function() {
+-    return d3_svg_line(d3_identity);
++  numVertices = numVertices|0
++  var adj = new Array(numVertices)
++  for(var i=0; i<numVertices; ++i) {
++    adj[i] = []
++  }
++  for(var i=0; i<numEdges; ++i) {
++    var e = edges[i]
++    adj[e[0]].push(e[1])
++    adj[e[1]].push(e[0])
++  }
++  for(var j=0; j<numVertices; ++j) {
++    uniq(adj[j], function(a, b) {
++      return a - b
++    })
++  }
++  return adj
++}
++},{"uniq":248}],79:[function(require,module,exports){
++(function (process,global){
++/*!
++ * @overview es6-promise - a tiny implementation of Promises/A+.
++ * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
++ * @license   Licensed under MIT license
++ *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
++ * @version   3.3.1
++ */
++
++(function (global, factory) {
++    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
++    typeof define === 'function' && define.amd ? define(factory) :
++    (global.ES6Promise = factory());
++}(this, (function () { 'use strict';
++
++function objectOrFunction(x) {
++  return typeof x === 'function' || typeof x === 'object' && x !== null;
++}
++
++function isFunction(x) {
++  return typeof x === 'function';
++}
++
++var _isArray = undefined;
++if (!Array.isArray) {
++  _isArray = function (x) {
++    return Object.prototype.toString.call(x) === '[object Array]';
+   };
+-  var d3_svg_lineInterpolators = d3.map({
+-    linear: d3_svg_lineLinear,
+-    "linear-closed": d3_svg_lineLinearClosed,
+-    step: d3_svg_lineStep,
+-    "step-before": d3_svg_lineStepBefore,
+-    "step-after": d3_svg_lineStepAfter,
+-    basis: d3_svg_lineBasis,
+-    "basis-open": d3_svg_lineBasisOpen,
+-    "basis-closed": d3_svg_lineBasisClosed,
+-    bundle: d3_svg_lineBundle,
+-    cardinal: d3_svg_lineCardinal,
+-    "cardinal-open": d3_svg_lineCardinalOpen,
+-    "cardinal-closed": d3_svg_lineCardinalClosed,
+-    monotone: d3_svg_lineMonotone
+-  });
+-  d3_svg_lineInterpolators.forEach(function(key, value) {
+-    value.key = key;
+-    value.closed = /-closed$/.test(key);
+-  });
+-  function d3_svg_lineLinear(points) {
+-    return points.length > 1 ? points.join("L") : points + "Z";
++} else {
++  _isArray = Array.isArray;
++}
++
++var isArray = _isArray;
++
++var len = 0;
++var vertxNext = undefined;
++var customSchedulerFn = undefined;
++
++var asap = function asap(callback, arg) {
++  queue[len] = callback;
++  queue[len + 1] = arg;
++  len += 2;
++  if (len === 2) {
++    // If len is 2, that means that we need to schedule an async flush.
++    // If additional callbacks are queued before the queue is flushed, they
++    // will be processed by this flush that we are scheduling.
++    if (customSchedulerFn) {
++      customSchedulerFn(flush);
++    } else {
++      scheduleFlush();
++    }
+   }
+-  function d3_svg_lineLinearClosed(points) {
+-    return points.join("L") + "Z";
++};
++
++function setScheduler(scheduleFn) {
++  customSchedulerFn = scheduleFn;
++}
++
++function setAsap(asapFn) {
++  asap = asapFn;
++}
++
++var browserWindow = typeof window !== 'undefined' ? window : undefined;
++var browserGlobal = browserWindow || {};
++var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
++var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]';
++
++// test for web worker but not in IE10
++var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined';
++
++// node
++function useNextTick() {
++  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
++  // see https://github.com/cujojs/when/issues/410 for details
++  return function () {
++    return process.nextTick(flush);
++  };
++}
++
++// vertx
++function useVertxTimer() {
++  return function () {
++    vertxNext(flush);
++  };
++}
++
++function useMutationObserver() {
++  var iterations = 0;
++  var observer = new BrowserMutationObserver(flush);
++  var node = document.createTextNode('');
++  observer.observe(node, { characterData: true });
++
++  return function () {
++    node.data = iterations = ++iterations % 2;
++  };
++}
++
++// web worker
++function useMessageChannel() {
++  var channel = new MessageChannel();
++  channel.port1.onmessage = flush;
++  return function () {
++    return channel.port2.postMessage(0);
++  };
++}
++
++function useSetTimeout() {
++  // Store setTimeout reference so es6-promise will be unaffected by
++  // other code modifying setTimeout (like sinon.useFakeTimers())
++  var globalSetTimeout = setTimeout;
++  return function () {
++    return globalSetTimeout(flush, 1);
++  };
++}
++
++var queue = new Array(1000);
++function flush() {
++  for (var i = 0; i < len; i += 2) {
++    var callback = queue[i];
++    var arg = queue[i + 1];
++
++    callback(arg);
++
++    queue[i] = undefined;
++    queue[i + 1] = undefined;
+   }
+-  function d3_svg_lineStep(points) {
+-    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
+-    while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
+-    if (n > 1) path.push("H", p[0]);
+-    return path.join("");
++
++  len = 0;
++}
++
++function attemptVertx() {
++  try {
++    var r = require;
++    var vertx = r('vertx');
++    vertxNext = vertx.runOnLoop || vertx.runOnContext;
++    return useVertxTimer();
++  } catch (e) {
++    return useSetTimeout();
+   }
+-  function d3_svg_lineStepBefore(points) {
+-    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
+-    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
+-    return path.join("");
++}
++
++var scheduleFlush = undefined;
++// Decide what async method to use to triggering processing of queued callbacks:
++if (isNode) {
++  scheduleFlush = useNextTick();
++} else if (BrowserMutationObserver) {
++  scheduleFlush = useMutationObserver();
++} else if (isWorker) {
++  scheduleFlush = useMessageChannel();
++} else if (browserWindow === undefined && typeof require === 'function') {
++  scheduleFlush = attemptVertx();
++} else {
++  scheduleFlush = useSetTimeout();
++}
++
++function then(onFulfillment, onRejection) {
++  var _arguments = arguments;
++
++  var parent = this;
++
++  var child = new this.constructor(noop);
++
++  if (child[PROMISE_ID] === undefined) {
++    makePromise(child);
+   }
+-  function d3_svg_lineStepAfter(points) {
+-    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
+-    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
+-    return path.join("");
++
++  var _state = parent._state;
++
++  if (_state) {
++    (function () {
++      var callback = _arguments[_state - 1];
++      asap(function () {
++        return invokeCallback(_state, child, callback, parent._result);
++      });
++    })();
++  } else {
++    subscribe(parent, child, onFulfillment, onRejection);
+   }
+-  function d3_svg_lineCardinalOpen(points, tension) {
+-    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
++
++  return child;
++}
++
++/**
++  `Promise.resolve` returns a promise that will become resolved with the
++  passed `value`. It is shorthand for the following:
++
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    resolve(1);
++  });
++
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
++
++  Instead of writing the above, your code now simply becomes the following:
++
++  ```javascript
++  let promise = Promise.resolve(1);
++
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
++
++  @method resolve
++  @static
++  @param {Any} value value that the returned promise will be resolved with
++  Useful for tooling.
++  @return {Promise} a promise that will become fulfilled with the given
++  `value`
++*/
++function resolve(object) {
++  /*jshint validthis:true */
++  var Constructor = this;
++
++  if (object && typeof object === 'object' && object.constructor === Constructor) {
++    return object;
+   }
+-  function d3_svg_lineCardinalClosed(points, tension) {
+-    return points.length < 3 ? d3_svg_lineLinearClosed(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), 
+-    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
++
++  var promise = new Constructor(noop);
++  _resolve(promise, object);
++  return promise;
++}
++
++var PROMISE_ID = Math.random().toString(36).substring(16);
++
++function noop() {}
++
++var PENDING = void 0;
++var FULFILLED = 1;
++var REJECTED = 2;
++
++var GET_THEN_ERROR = new ErrorObject();
++
++function selfFulfillment() {
++  return new TypeError("You cannot resolve a promise with itself");
++}
++
++function cannotReturnOwn() {
++  return new TypeError('A promises callback cannot return that same promise.');
++}
++
++function getThen(promise) {
++  try {
++    return promise.then;
++  } catch (error) {
++    GET_THEN_ERROR.error = error;
++    return GET_THEN_ERROR;
+   }
+-  function d3_svg_lineCardinal(points, tension) {
+-    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
++}
++
++function tryThen(then, value, fulfillmentHandler, rejectionHandler) {
++  try {
++    then.call(value, fulfillmentHandler, rejectionHandler);
++  } catch (e) {
++    return e;
+   }
+-  function d3_svg_lineHermite(points, tangents) {
+-    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
+-      return d3_svg_lineLinear(points);
+-    }
+-    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
+-    if (quad) {
+-      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
+-      p0 = points[1];
+-      pi = 2;
+-    }
+-    if (tangents.length > 1) {
+-      t = tangents[1];
+-      p = points[pi];
+-      pi++;
+-      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
+-      for (var i = 2; i < tangents.length; i++, pi++) {
+-        p = points[pi];
+-        t = tangents[i];
+-        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
++}
++
++function handleForeignThenable(promise, thenable, then) {
++  asap(function (promise) {
++    var sealed = false;
++    var error = tryThen(then, thenable, function (value) {
++      if (sealed) {
++        return;
+       }
++      sealed = true;
++      if (thenable !== value) {
++        _resolve(promise, value);
++      } else {
++        fulfill(promise, value);
++      }
++    }, function (reason) {
++      if (sealed) {
++        return;
++      }
++      sealed = true;
++
++      _reject(promise, reason);
++    }, 'Settle: ' + (promise._label || ' unknown promise'));
++
++    if (!sealed && error) {
++      sealed = true;
++      _reject(promise, error);
+     }
+-    if (quad) {
+-      var lp = points[pi];
+-      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
+-    }
+-    return path;
+-  }
+-  function d3_svg_lineCardinalTangents(points, tension) {
+-    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
+-    while (++i < n) {
+-      p0 = p1;
+-      p1 = p2;
+-      p2 = points[i];
+-      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
+-    }
+-    return tangents;
+-  }
+-  function d3_svg_lineBasis(points) {
+-    if (points.length < 3) return d3_svg_lineLinear(points);
+-    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
+-    points.push(points[n - 1]);
+-    while (++i <= n) {
+-      pi = points[i];
+-      px.shift();
+-      px.push(pi[0]);
+-      py.shift();
+-      py.push(pi[1]);
+-      d3_svg_lineBasisBezier(path, px, py);
+-    }
+-    points.pop();
+-    path.push("L", pi);
+-    return path.join("");
+-  }
+-  function d3_svg_lineBasisOpen(points) {
+-    if (points.length < 4) return d3_svg_lineLinear(points);
+-    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
+-    while (++i < 3) {
+-      pi = points[i];
+-      px.push(pi[0]);
+-      py.push(pi[1]);
+-    }
+-    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
+-    --i;
+-    while (++i < n) {
+-      pi = points[i];
+-      px.shift();
+-      px.push(pi[0]);
+-      py.shift();
+-      py.push(pi[1]);
+-      d3_svg_lineBasisBezier(path, px, py);
+-    }
+-    return path.join("");
++  }, promise);
++}
++
++function handleOwnThenable(promise, thenable) {
++  if (thenable._state === FULFILLED) {
++    fulfill(promise, thenable._result);
++  } else if (thenable._state === REJECTED) {
++    _reject(promise, thenable._result);
++  } else {
++    subscribe(thenable, undefined, function (value) {
++      return _resolve(promise, value);
++    }, function (reason) {
++      return _reject(promise, reason);
++    });
+   }
+-  function d3_svg_lineBasisClosed(points) {
+-    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
+-    while (++i < 4) {
+-      pi = points[i % n];
+-      px.push(pi[0]);
+-      py.push(pi[1]);
+-    }
+-    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
+-    --i;
+-    while (++i < m) {
+-      pi = points[i % n];
+-      px.shift();
+-      px.push(pi[0]);
+-      py.shift();
+-      py.push(pi[1]);
+-      d3_svg_lineBasisBezier(path, px, py);
++}
++
++function handleMaybeThenable(promise, maybeThenable, then$$) {
++  if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) {
++    handleOwnThenable(promise, maybeThenable);
++  } else {
++    if (then$$ === GET_THEN_ERROR) {
++      _reject(promise, GET_THEN_ERROR.error);
++    } else if (then$$ === undefined) {
++      fulfill(promise, maybeThenable);
++    } else if (isFunction(then$$)) {
++      handleForeignThenable(promise, maybeThenable, then$$);
++    } else {
++      fulfill(promise, maybeThenable);
+     }
+-    return path.join("");
+   }
+-  function d3_svg_lineBundle(points, tension) {
+-    var n = points.length - 1;
+-    if (n) {
+-      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
+-      while (++i <= n) {
+-        p = points[i];
+-        t = i / n;
+-        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
+-        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
+-      }
+-    }
+-    return d3_svg_lineBasis(points);
++}
++
++function _resolve(promise, value) {
++  if (promise === value) {
++    _reject(promise, selfFulfillment());
++  } else if (objectOrFunction(value)) {
++    handleMaybeThenable(promise, value, getThen(value));
++  } else {
++    fulfill(promise, value);
+   }
+-  function d3_svg_lineDot4(a, b) {
+-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
++}
++
++function publishRejection(promise) {
++  if (promise._onerror) {
++    promise._onerror(promise._result);
+   }
+-  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
+-  function d3_svg_lineBasisBezier(path, x, y) {
+-    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
++
++  publish(promise);
++}
++
++function fulfill(promise, value) {
++  if (promise._state !== PENDING) {
++    return;
+   }
+-  function d3_svg_lineSlope(p0, p1) {
+-    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
++
++  promise._result = value;
++  promise._state = FULFILLED;
++
++  if (promise._subscribers.length !== 0) {
++    asap(publish, promise);
+   }
+-  function d3_svg_lineFiniteDifferences(points) {
+-    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
+-    while (++i < j) {
+-      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
+-    }
+-    m[i] = d;
+-    return m;
++}
++
++function _reject(promise, reason) {
++  if (promise._state !== PENDING) {
++    return;
+   }
+-  function d3_svg_lineMonotoneTangents(points) {
+-    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
+-    while (++i < j) {
+-      d = d3_svg_lineSlope(points[i], points[i + 1]);
+-      if (abs(d) < ε) {
+-        m[i] = m[i + 1] = 0;
+-      } else {
+-        a = m[i] / d;
+-        b = m[i + 1] / d;
+-        s = a * a + b * b;
+-        if (s > 9) {
+-          s = d * 3 / Math.sqrt(s);
+-          m[i] = s * a;
+-          m[i + 1] = s * b;
+-        }
+-      }
+-    }
+-    i = -1;
+-    while (++i <= j) {
+-      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
+-      tangents.push([ s || 0, m[i] * s || 0 ]);
+-    }
+-    return tangents;
++  promise._state = REJECTED;
++  promise._result = reason;
++
++  asap(publishRejection, promise);
++}
++
++function subscribe(parent, child, onFulfillment, onRejection) {
++  var _subscribers = parent._subscribers;
++  var length = _subscribers.length;
++
++  parent._onerror = null;
++
++  _subscribers[length] = child;
++  _subscribers[length + FULFILLED] = onFulfillment;
++  _subscribers[length + REJECTED] = onRejection;
++
++  if (length === 0 && parent._state) {
++    asap(publish, parent);
+   }
+-  function d3_svg_lineMonotone(points) {
+-    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
++}
++
++function publish(promise) {
++  var subscribers = promise._subscribers;
++  var settled = promise._state;
++
++  if (subscribers.length === 0) {
++    return;
+   }
+-  d3.svg.line.radial = function() {
+-    var line = d3_svg_line(d3_svg_lineRadial);
+-    line.radius = line.x, delete line.x;
+-    line.angle = line.y, delete line.y;
+-    return line;
+-  };
+-  function d3_svg_lineRadial(points) {
+-    var point, i = -1, n = points.length, r, a;
+-    while (++i < n) {
+-      point = points[i];
+-      r = point[0];
+-      a = point[1] - halfπ;
+-      point[0] = r * Math.cos(a);
+-      point[1] = r * Math.sin(a);
++
++  var child = undefined,
++      callback = undefined,
++      detail = promise._result;
++
++  for (var i = 0; i < subscribers.length; i += 3) {
++    child = subscribers[i];
++    callback = subscribers[i + settled];
++
++    if (child) {
++      invokeCallback(settled, child, callback, detail);
++    } else {
++      callback(detail);
+     }
+-    return points;
+   }
+-  function d3_svg_area(projection) {
+-    var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
+-    function area(data) {
+-      var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
+-        return x;
+-      } : d3_functor(x1), fy1 = y0 === y1 ? function() {
+-        return y;
+-      } : d3_functor(y1), x, y;
+-      function segment() {
+-        segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
+-      }
+-      while (++i < n) {
+-        if (defined.call(this, d = data[i], i)) {
+-          points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
+-          points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
+-        } else if (points0.length) {
+-          segment();
+-          points0 = [];
+-          points1 = [];
+-        }
+-      }
+-      if (points0.length) segment();
+-      return segments.length ? segments.join("") : null;
+-    }
+-    area.x = function(_) {
+-      if (!arguments.length) return x1;
+-      x0 = x1 = _;
+-      return area;
+-    };
+-    area.x0 = function(_) {
+-      if (!arguments.length) return x0;
+-      x0 = _;
+-      return area;
+-    };
+-    area.x1 = function(_) {
+-      if (!arguments.length) return x1;
+-      x1 = _;
+-      return area;
+-    };
+-    area.y = function(_) {
+-      if (!arguments.length) return y1;
+-      y0 = y1 = _;
+-      return area;
+-    };
+-    area.y0 = function(_) {
+-      if (!arguments.length) return y0;
+-      y0 = _;
+-      return area;
+-    };
+-    area.y1 = function(_) {
+-      if (!arguments.length) return y1;
+-      y1 = _;
+-      return area;
+-    };
+-    area.defined = function(_) {
+-      if (!arguments.length) return defined;
+-      defined = _;
+-      return area;
+-    };
+-    area.interpolate = function(_) {
+-      if (!arguments.length) return interpolateKey;
+-      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
+-      interpolateReverse = interpolate.reverse || interpolate;
+-      L = interpolate.closed ? "M" : "L";
+-      return area;
+-    };
+-    area.tension = function(_) {
+-      if (!arguments.length) return tension;
+-      tension = _;
+-      return area;
+-    };
+-    return area;
++
++  promise._subscribers.length = 0;
++}
++
++function ErrorObject() {
++  this.error = null;
++}
++
++var TRY_CATCH_ERROR = new ErrorObject();
++
++function tryCatch(callback, detail) {
++  try {
++    return callback(detail);
++  } catch (e) {
++    TRY_CATCH_ERROR.error = e;
++    return TRY_CATCH_ERROR;
+   }
+-  d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
+-  d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
+-  d3.svg.area = function() {
+-    return d3_svg_area(d3_identity);
+-  };
+-  d3.svg.area.radial = function() {
+-    var area = d3_svg_area(d3_svg_lineRadial);
+-    area.radius = area.x, delete area.x;
+-    area.innerRadius = area.x0, delete area.x0;
+-    area.outerRadius = area.x1, delete area.x1;
+-    area.angle = area.y, delete area.y;
+-    area.startAngle = area.y0, delete area.y0;
+-    area.endAngle = area.y1, delete area.y1;
+-    return area;
+-  };
+-  d3.svg.chord = function() {
+-    var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
+-    function chord(d, i) {
+-      var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
+-      return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
+-    }
+-    function subgroup(self, f, d, i) {
+-      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
+-      return {
+-        r: r,
+-        a0: a0,
+-        a1: a1,
+-        p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
+-        p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
+-      };
+-    }
+-    function equals(a, b) {
+-      return a.a0 == b.a0 && a.a1 == b.a1;
+-    }
+-    function arc(r, p, a) {
+-      return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
++}
++
++function invokeCallback(settled, promise, callback, detail) {
++  var hasCallback = isFunction(callback),
++      value = undefined,
++      error = undefined,
++      succeeded = undefined,
++      failed = undefined;
++
++  if (hasCallback) {
++    value = tryCatch(callback, detail);
++
++    if (value === TRY_CATCH_ERROR) {
++      failed = true;
++      error = value.error;
++      value = null;
++    } else {
++      succeeded = true;
+     }
+-    function curve(r0, p0, r1, p1) {
+-      return "Q 0,0 " + p1;
++
++    if (promise === value) {
++      _reject(promise, cannotReturnOwn());
++      return;
+     }
+-    chord.radius = function(v) {
+-      if (!arguments.length) return radius;
+-      radius = d3_functor(v);
+-      return chord;
+-    };
+-    chord.source = function(v) {
+-      if (!arguments.length) return source;
+-      source = d3_functor(v);
+-      return chord;
+-    };
+-    chord.target = function(v) {
+-      if (!arguments.length) return target;
+-      target = d3_functor(v);
+-      return chord;
+-    };
+-    chord.startAngle = function(v) {
+-      if (!arguments.length) return startAngle;
+-      startAngle = d3_functor(v);
+-      return chord;
+-    };
+-    chord.endAngle = function(v) {
+-      if (!arguments.length) return endAngle;
+-      endAngle = d3_functor(v);
+-      return chord;
+-    };
+-    return chord;
+-  };
+-  function d3_svg_chordRadius(d) {
+-    return d.radius;
++  } else {
++    value = detail;
++    succeeded = true;
+   }
+-  d3.svg.diagonal = function() {
+-    var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
+-    function diagonal(d, i) {
+-      var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
+-        x: p0.x,
+-        y: m
+-      }, {
+-        x: p3.x,
+-        y: m
+-      }, p3 ];
+-      p = p.map(projection);
+-      return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
++
++  if (promise._state !== PENDING) {
++    // noop
++  } else if (hasCallback && succeeded) {
++      _resolve(promise, value);
++    } else if (failed) {
++      _reject(promise, error);
++    } else if (settled === FULFILLED) {
++      fulfill(promise, value);
++    } else if (settled === REJECTED) {
++      _reject(promise, value);
+     }
+-    diagonal.source = function(x) {
+-      if (!arguments.length) return source;
+-      source = d3_functor(x);
+-      return diagonal;
+-    };
+-    diagonal.target = function(x) {
+-      if (!arguments.length) return target;
+-      target = d3_functor(x);
+-      return diagonal;
+-    };
+-    diagonal.projection = function(x) {
+-      if (!arguments.length) return projection;
+-      projection = x;
+-      return diagonal;
+-    };
+-    return diagonal;
+-  };
+-  function d3_svg_diagonalProjection(d) {
+-    return [ d.x, d.y ];
++}
++
++function initializePromise(promise, resolver) {
++  try {
++    resolver(function resolvePromise(value) {
++      _resolve(promise, value);
++    }, function rejectPromise(reason) {
++      _reject(promise, reason);
++    });
++  } catch (e) {
++    _reject(promise, e);
+   }
+-  d3.svg.diagonal.radial = function() {
+-    var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
+-    diagonal.projection = function(x) {
+-      return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
+-    };
+-    return diagonal;
+-  };
+-  function d3_svg_diagonalRadialProjection(projection) {
+-    return function() {
+-      var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
+-      return [ r * Math.cos(a), r * Math.sin(a) ];
+-    };
++}
++
++var id = 0;
++function nextId() {
++  return id++;
++}
++
++function makePromise(promise) {
++  promise[PROMISE_ID] = id++;
++  promise._state = undefined;
++  promise._result = undefined;
++  promise._subscribers = [];
++}
++
++function Enumerator(Constructor, input) {
++  this._instanceConstructor = Constructor;
++  this.promise = new Constructor(noop);
++
++  if (!this.promise[PROMISE_ID]) {
++    makePromise(this.promise);
+   }
+-  d3.svg.symbol = function() {
+-    var type = d3_svg_symbolType, size = d3_svg_symbolSize;
+-    function symbol(d, i) {
+-      return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
++
++  if (isArray(input)) {
++    this._input = input;
++    this.length = input.length;
++    this._remaining = input.length;
++
++    this._result = new Array(this.length);
++
++    if (this.length === 0) {
++      fulfill(this.promise, this._result);
++    } else {
++      this.length = this.length || 0;
++      this._enumerate();
++      if (this._remaining === 0) {
++        fulfill(this.promise, this._result);
++      }
+     }
+-    symbol.type = function(x) {
+-      if (!arguments.length) return type;
+-      type = d3_functor(x);
+-      return symbol;
+-    };
+-    symbol.size = function(x) {
+-      if (!arguments.length) return size;
+-      size = d3_functor(x);
+-      return symbol;
+-    };
+-    return symbol;
+-  };
+-  function d3_svg_symbolSize() {
+-    return 64;
+-  }
+-  function d3_svg_symbolType() {
+-    return "circle";
++  } else {
++    _reject(this.promise, validationError());
+   }
+-  function d3_svg_symbolCircle(size) {
+-    var r = Math.sqrt(size / π);
+-    return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
++}
++
++function validationError() {
++  return new Error('Array Methods must be provided an Array');
++};
++
++Enumerator.prototype._enumerate = function () {
++  var length = this.length;
++  var _input = this._input;
++
++  for (var i = 0; this._state === PENDING && i < length; i++) {
++    this._eachEntry(_input[i], i);
+   }
+-  var d3_svg_symbols = d3.map({
+-    circle: d3_svg_symbolCircle,
+-    cross: function(size) {
+-      var r = Math.sqrt(size / 5) / 2;
+-      return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
+-    },
+-    diamond: function(size) {
+-      var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
+-      return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
+-    },
+-    square: function(size) {
+-      var r = Math.sqrt(size) / 2;
+-      return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
+-    },
+-    "triangle-down": function(size) {
+-      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
+-      return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
+-    },
+-    "triangle-up": function(size) {
+-      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
+-      return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
++};
++
++Enumerator.prototype._eachEntry = function (entry, i) {
++  var c = this._instanceConstructor;
++  var resolve$$ = c.resolve;
++
++  if (resolve$$ === resolve) {
++    var _then = getThen(entry);
++
++    if (_then === then && entry._state !== PENDING) {
++      this._settledAt(entry._state, i, entry._result);
++    } else if (typeof _then !== 'function') {
++      this._remaining--;
++      this._result[i] = entry;
++    } else if (c === Promise) {
++      var promise = new c(noop);
++      handleMaybeThenable(promise, entry, _then);
++      this._willSettleAt(promise, i);
++    } else {
++      this._willSettleAt(new c(function (resolve$$) {
++        return resolve$$(entry);
++      }), i);
+     }
+-  });
+-  d3.svg.symbolTypes = d3_svg_symbols.keys();
+-  var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
+-  d3_selectionPrototype.transition = function(name) {
+-    var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
+-      time: Date.now(),
+-      ease: d3_ease_cubicInOut,
+-      delay: 0,
+-      duration: 250
+-    };
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      subgroups.push(subgroup = []);
+-      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
+-        if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
+-        subgroup.push(node);
+-      }
++  } else {
++    this._willSettleAt(resolve$$(entry), i);
++  }
++};
++
++Enumerator.prototype._settledAt = function (state, i, value) {
++  var promise = this.promise;
++
++  if (promise._state === PENDING) {
++    this._remaining--;
++
++    if (state === REJECTED) {
++      _reject(promise, value);
++    } else {
++      this._result[i] = value;
+     }
+-    return d3_transition(subgroups, ns, id);
+-  };
+-  d3_selectionPrototype.interrupt = function(name) {
+-    return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
+-  };
+-  var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
+-  function d3_selection_interruptNS(ns) {
+-    return function() {
+-      var lock, activeId, active;
+-      if ((lock = this[ns]) && (active = lock[activeId = lock.active])) {
+-        active.timer.c = null;
+-        active.timer.t = NaN;
+-        if (--lock.count) delete lock[activeId]; else delete this[ns];
+-        lock.active += .5;
+-        active.event && active.event.interrupt.call(this, this.__data__, active.index);
+-      }
+-    };
+   }
+-  function d3_transition(groups, ns, id) {
+-    d3_subclass(groups, d3_transitionPrototype);
+-    groups.namespace = ns;
+-    groups.id = id;
+-    return groups;
++
++  if (this._remaining === 0) {
++    fulfill(promise, this._result);
+   }
+-  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
+-  d3_transitionPrototype.call = d3_selectionPrototype.call;
+-  d3_transitionPrototype.empty = d3_selectionPrototype.empty;
+-  d3_transitionPrototype.node = d3_selectionPrototype.node;
+-  d3_transitionPrototype.size = d3_selectionPrototype.size;
+-  d3.transition = function(selection, name) {
+-    return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3.selection().transition(selection);
+-  };
+-  d3.transition.prototype = d3_transitionPrototype;
+-  d3_transitionPrototype.select = function(selector) {
+-    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
+-    selector = d3_selection_selector(selector);
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      subgroups.push(subgroup = []);
+-      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
+-        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
+-          if ("__data__" in node) subnode.__data__ = node.__data__;
+-          d3_transitionNode(subnode, i, ns, id, node[ns][id]);
+-          subgroup.push(subnode);
+-        } else {
+-          subgroup.push(null);
+-        }
++};
++
++Enumerator.prototype._willSettleAt = function (promise, i) {
++  var enumerator = this;
++
++  subscribe(promise, undefined, function (value) {
++    return enumerator._settledAt(FULFILLED, i, value);
++  }, function (reason) {
++    return enumerator._settledAt(REJECTED, i, reason);
++  });
++};
++
++/**
++  `Promise.all` accepts an array of promises, and returns a new promise which
++  is fulfilled with an array of fulfillment values for the passed promises, or
++  rejected with the reason of the first passed promise to be rejected. It casts all
++  elements of the passed iterable to promises as it runs this algorithm.
++
++  Example:
++
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = resolve(2);
++  let promise3 = resolve(3);
++  let promises = [ promise1, promise2, promise3 ];
++
++  Promise.all(promises).then(function(array){
++    // The array here would be [ 1, 2, 3 ];
++  });
++  ```
++
++  If any of the `promises` given to `all` are rejected, the first promise
++  that is rejected will be given as an argument to the returned promises's
++  rejection handler. For example:
++
++  Example:
++
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = reject(new Error("2"));
++  let promise3 = reject(new Error("3"));
++  let promises = [ promise1, promise2, promise3 ];
++
++  Promise.all(promises).then(function(array){
++    // Code here never runs because there are rejected promises!
++  }, function(error) {
++    // error.message === "2"
++  });
++  ```
++
++  @method all
++  @static
++  @param {Array} entries array of promises
++  @param {String} label optional string for labeling the promise.
++  Useful for tooling.
++  @return {Promise} promise that is fulfilled when all `promises` have been
++  fulfilled, or rejected if any of them become rejected.
++  @static
++*/
++function all(entries) {
++  return new Enumerator(this, entries).promise;
++}
++
++/**
++  `Promise.race` returns a new promise which is settled in the same way as the
++  first passed promise to settle.
++
++  Example:
++
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
++
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 2');
++    }, 100);
++  });
++
++  Promise.race([promise1, promise2]).then(function(result){
++    // result === 'promise 2' because it was resolved before promise1
++    // was resolved.
++  });
++  ```
++
++  `Promise.race` is deterministic in that only the state of the first
++  settled promise matters. For example, even if other promises given to the
++  `promises` array argument are resolved, but the first settled promise has
++  become rejected before the other promises became fulfilled, the returned
++  promise will become rejected:
++
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
++
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      reject(new Error('promise 2'));
++    }, 100);
++  });
++
++  Promise.race([promise1, promise2]).then(function(result){
++    // Code here never runs
++  }, function(reason){
++    // reason.message === 'promise 2' because promise 2 became rejected before
++    // promise 1 became fulfilled
++  });
++  ```
++
++  An example real-world use case is implementing timeouts:
++
++  ```javascript
++  Promise.race([ajax('foo.json'), timeout(5000)])
++  ```
++
++  @method race
++  @static
++  @param {Array} promises array of promises to observe
++  Useful for tooling.
++  @return {Promise} a promise which settles in the same way as the first passed
++  promise to settle.
++*/
++function race(entries) {
++  /*jshint validthis:true */
++  var Constructor = this;
++
++  if (!isArray(entries)) {
++    return new Constructor(function (_, reject) {
++      return reject(new TypeError('You must pass an array to race.'));
++    });
++  } else {
++    return new Constructor(function (resolve, reject) {
++      var length = entries.length;
++      for (var i = 0; i < length; i++) {
++        Constructor.resolve(entries[i]).then(resolve, reject);
+       }
+-    }
+-    return d3_transition(subgroups, ns, id);
+-  };
+-  d3_transitionPrototype.selectAll = function(selector) {
+-    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
+-    selector = d3_selection_selectorAll(selector);
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
+-        if (node = group[i]) {
+-          transition = node[ns][id];
+-          subnodes = selector.call(node, node.__data__, i, j);
+-          subgroups.push(subgroup = []);
+-          for (var k = -1, o = subnodes.length; ++k < o; ) {
+-            if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
+-            subgroup.push(subnode);
++    });
++  }
++}
++
++/**
++  `Promise.reject` returns a promise rejected with the passed `reason`.
++  It is shorthand for the following:
++
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    reject(new Error('WHOOPS'));
++  });
++
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
++
++  Instead of writing the above, your code now simply becomes the following:
++
++  ```javascript
++  let promise = Promise.reject(new Error('WHOOPS'));
++
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
++
++  @method reject
++  @static
++  @param {Any} reason value that the returned promise will be rejected with.
++  Useful for tooling.
++  @return {Promise} a promise rejected with the given `reason`.
++*/
++function reject(reason) {
++  /*jshint validthis:true */
++  var Constructor = this;
++  var promise = new Constructor(noop);
++  _reject(promise, reason);
++  return promise;
++}
++
++function needsResolver() {
++  throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++}
++
++function needsNew() {
++  throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++}
++
++/**
++  Promise objects represent the eventual result of an asynchronous operation. The
++  primary way of interacting with a promise is through its `then` method, which
++  registers callbacks to receive either a promise's eventual value or the reason
++  why the promise cannot be fulfilled.
++
++  Terminology
++  -----------
++
++  - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
++  - `thenable` is an object or function that defines a `then` method.
++  - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
++  - `exception` is a value that is thrown using the throw statement.
++  - `reason` is a value that indicates why a promise was rejected.
++  - `settled` the final resting state of a promise, fulfilled or rejected.
++
++  A promise can be in one of three states: pending, fulfilled, or rejected.
++
++  Promises that are fulfilled have a fulfillment value and are in the fulfilled
++  state.  Promises that are rejected have a rejection reason and are in the
++  rejected state.  A fulfillment value is never a thenable.
++
++  Promises can also be said to *resolve* a value.  If this value is also a
++  promise, then the original promise's settled state will match the value's
++  settled state.  So a promise that *resolves* a promise that rejects will
++  itself reject, and a promise that *resolves* a promise that fulfills will
++  itself fulfill.
++
++
++  Basic Usage:
++  ------------
++
++  ```js
++  let promise = new Promise(function(resolve, reject) {
++    // on success
++    resolve(value);
++
++    // on failure
++    reject(reason);
++  });
++
++  promise.then(function(value) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
++
++  Advanced Usage:
++  ---------------
++
++  Promises shine when abstracting away asynchronous interactions such as
++  `XMLHttpRequest`s.
++
++  ```js
++  function getJSON(url) {
++    return new Promise(function(resolve, reject){
++      let xhr = new XMLHttpRequest();
++
++      xhr.open('GET', url);
++      xhr.onreadystatechange = handler;
++      xhr.responseType = 'json';
++      xhr.setRequestHeader('Accept', 'application/json');
++      xhr.send();
++
++      function handler() {
++        if (this.readyState === this.DONE) {
++          if (this.status === 200) {
++            resolve(this.response);
++          } else {
++            reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
+           }
+         }
+-      }
+-    }
+-    return d3_transition(subgroups, ns, id);
+-  };
+-  d3_transitionPrototype.filter = function(filter) {
+-    var subgroups = [], subgroup, group, node;
+-    if (typeof filter !== "function") filter = d3_selection_filter(filter);
+-    for (var j = 0, m = this.length; j < m; j++) {
+-      subgroups.push(subgroup = []);
+-      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
+-        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
+-          subgroup.push(node);
+-        }
+-      }
+-    }
+-    return d3_transition(subgroups, this.namespace, this.id);
+-  };
+-  d3_transitionPrototype.tween = function(name, tween) {
+-    var id = this.id, ns = this.namespace;
+-    if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
+-    return d3_selection_each(this, tween == null ? function(node) {
+-      node[ns][id].tween.remove(name);
+-    } : function(node) {
+-      node[ns][id].tween.set(name, tween);
++      };
+     });
+-  };
+-  function d3_transition_tween(groups, name, value, tween) {
+-    var id = groups.id, ns = groups.namespace;
+-    return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
+-      node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
+-    } : (value = tween(value), function(node) {
+-      node[ns][id].tween.set(name, value);
+-    }));
+   }
+-  d3_transitionPrototype.attr = function(nameNS, value) {
+-    if (arguments.length < 2) {
+-      for (value in nameNS) this.attr(value, nameNS[value]);
+-      return this;
+-    }
+-    var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
+-    function attrNull() {
+-      this.removeAttribute(name);
+-    }
+-    function attrNullNS() {
+-      this.removeAttributeNS(name.space, name.local);
+-    }
+-    function attrTween(b) {
+-      return b == null ? attrNull : (b += "", function() {
+-        var a = this.getAttribute(name), i;
+-        return a !== b && (i = interpolate(a, b), function(t) {
+-          this.setAttribute(name, i(t));
+-        });
+-      });
++
++  getJSON('/posts.json').then(function(json) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
++
++  Unlike callbacks, promises are great composable primitives.
++
++  ```js
++  Promise.all([
++    getJSON('/posts'),
++    getJSON('/comments')
++  ]).then(function(values){
++    values[0] // => postsJSON
++    values[1] // => commentsJSON
++
++    return values;
++  });
++  ```
++
++  @class Promise
++  @param {function} resolver
++  Useful for tooling.
++  @constructor
++*/
++function Promise(resolver) {
++  this[PROMISE_ID] = nextId();
++  this._result = this._state = undefined;
++  this._subscribers = [];
++
++  if (noop !== resolver) {
++    typeof resolver !== 'function' && needsResolver();
++    this instanceof Promise ? initializePromise(this, resolver) : needsNew();
++  }
++}
++
++Promise.all = all;
++Promise.race = race;
++Promise.resolve = resolve;
++Promise.reject = reject;
++Promise._setScheduler = setScheduler;
++Promise._setAsap = setAsap;
++Promise._asap = asap;
++
++Promise.prototype = {
++  constructor: Promise,
++
++  /**
++    The primary way of interacting with a promise is through its `then` method,
++    which registers callbacks to receive either a promise's eventual value or the
++    reason why the promise cannot be fulfilled.
++  
++    ```js
++    findUser().then(function(user){
++      // user is available
++    }, function(reason){
++      // user is unavailable, and you are given the reason why
++    });
++    ```
++  
++    Chaining
++    --------
++  
++    The return value of `then` is itself a promise.  This second, 'downstream'
++    promise is resolved with the return value of the first promise's fulfillment
++    or rejection handler, or rejected if the handler throws an exception.
++  
++    ```js
++    findUser().then(function (user) {
++      return user.name;
++    }, function (reason) {
++      return 'default name';
++    }).then(function (userName) {
++      // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
++      // will be `'default name'`
++    });
++  
++    findUser().then(function (user) {
++      throw new Error('Found user, but still unhappy');
++    }, function (reason) {
++      throw new Error('`findUser` rejected and we're unhappy');
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
++      // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
++    });
++    ```
++    If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
++  
++    ```js
++    findUser().then(function (user) {
++      throw new PedagogicalException('Upstream error');
++    }).then(function (value) {
++      // never reached
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // The `PedgagocialException` is propagated all the way down to here
++    });
++    ```
++  
++    Assimilation
++    ------------
++  
++    Sometimes the value you want to propagate to a downstream promise can only be
++    retrieved asynchronously. This can be achieved by returning a promise in the
++    fulfillment or rejection handler. The downstream promise will then be pending
++    until the returned promise is settled. This is called *assimilation*.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // The user's comments are now available
++    });
++    ```
++  
++    If the assimliated promise rejects, then the downstream promise will also reject.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // If `findCommentsByAuthor` fulfills, we'll have the value here
++    }, function (reason) {
++      // If `findCommentsByAuthor` rejects, we'll have the reason here
++    });
++    ```
++  
++    Simple Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let result;
++  
++    try {
++      result = findResult();
++      // success
++    } catch(reason) {
++      // failure
+     }
+-    function attrTweenNS(b) {
+-      return b == null ? attrNullNS : (b += "", function() {
+-        var a = this.getAttributeNS(name.space, name.local), i;
+-        return a !== b && (i = interpolate(a, b), function(t) {
+-          this.setAttributeNS(name.space, name.local, i(t));
+-        });
+-      });
++    ```
++  
++    Errback Example
++  
++    ```js
++    findResult(function(result, err){
++      if (err) {
++        // failure
++      } else {
++        // success
++      }
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findResult().then(function(result){
++      // success
++    }, function(reason){
++      // failure
++    });
++    ```
++  
++    Advanced Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let author, books;
++  
++    try {
++      author = findAuthor();
++      books  = findBooksByAuthor(author);
++      // success
++    } catch(reason) {
++      // failure
+     }
+-    return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
+-  };
+-  d3_transitionPrototype.attrTween = function(nameNS, tween) {
+-    var name = d3.ns.qualify(nameNS);
+-    function attrTween(d, i) {
+-      var f = tween.call(this, d, i, this.getAttribute(name));
+-      return f && function(t) {
+-        this.setAttribute(name, f(t));
+-      };
++    ```
++  
++    Errback Example
++  
++    ```js
++  
++    function foundBooks(books) {
++  
+     }
+-    function attrTweenNS(d, i) {
+-      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
+-      return f && function(t) {
+-        this.setAttributeNS(name.space, name.local, f(t));
+-      };
++  
++    function failure(reason) {
++  
+     }
+-    return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
+-  };
+-  d3_transitionPrototype.style = function(name, value, priority) {
+-    var n = arguments.length;
+-    if (n < 3) {
+-      if (typeof name !== "string") {
+-        if (n < 2) value = "";
+-        for (priority in name) this.style(priority, name[priority], value);
+-        return this;
++  
++    findAuthor(function(author, err){
++      if (err) {
++        failure(err);
++        // failure
++      } else {
++        try {
++          findBoooksByAuthor(author, function(books, err) {
++            if (err) {
++              failure(err);
++            } else {
++              try {
++                foundBooks(books);
++              } catch(reason) {
++                failure(reason);
++              }
++            }
++          });
++        } catch(error) {
++          failure(err);
++        }
++        // success
+       }
+-      priority = "";
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findAuthor().
++      then(findBooksByAuthor).
++      then(function(books){
++        // found books
++    }).catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method then
++    @param {Function} onFulfilled
++    @param {Function} onRejected
++    Useful for tooling.
++    @return {Promise}
++  */
++  then: then,
++
++  /**
++    `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
++    as the catch block of a try/catch statement.
++  
++    ```js
++    function findAuthor(){
++      throw new Error('couldn't find that author');
+     }
+-    function styleNull() {
+-      this.style.removeProperty(name);
++  
++    // synchronous
++    try {
++      findAuthor();
++    } catch(reason) {
++      // something went wrong
+     }
+-    function styleString(b) {
+-      return b == null ? styleNull : (b += "", function() {
+-        var a = d3_window(this).getComputedStyle(this, null).getPropertyValue(name), i;
+-        return a !== b && (i = d3_interpolate(a, b), function(t) {
+-          this.style.setProperty(name, i(t), priority);
+-        });
+-      });
++  
++    // async with promises
++    findAuthor().catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method catch
++    @param {Function} onRejection
++    Useful for tooling.
++    @return {Promise}
++  */
++  'catch': function _catch(onRejection) {
++    return this.then(null, onRejection);
++  }
++};
++
++function polyfill() {
++    var local = undefined;
++
++    if (typeof global !== 'undefined') {
++        local = global;
++    } else if (typeof self !== 'undefined') {
++        local = self;
++    } else {
++        try {
++            local = Function('return this')();
++        } catch (e) {
++            throw new Error('polyfill failed because global object is unavailable in this environment');
++        }
+     }
+-    return d3_transition_tween(this, "style." + name, value, styleString);
+-  };
+-  d3_transitionPrototype.styleTween = function(name, tween, priority) {
+-    if (arguments.length < 3) priority = "";
+-    function styleTween(d, i) {
+-      var f = tween.call(this, d, i, d3_window(this).getComputedStyle(this, null).getPropertyValue(name));
+-      return f && function(t) {
+-        this.style.setProperty(name, f(t), priority);
+-      };
++
++    var P = local.Promise;
++
++    if (P) {
++        var promiseToString = null;
++        try {
++            promiseToString = Object.prototype.toString.call(P.resolve());
++        } catch (e) {
++            // silently ignored
++        }
++
++        if (promiseToString === '[object Promise]' && !P.cast) {
++            return;
++        }
+     }
+-    return this.tween("style." + name, styleTween);
+-  };
+-  d3_transitionPrototype.text = function(value) {
+-    return d3_transition_tween(this, "text", value, d3_transition_text);
+-  };
+-  function d3_transition_text(b) {
+-    if (b == null) b = "";
+-    return function() {
+-      this.textContent = b;
+-    };
+-  }
+-  d3_transitionPrototype.remove = function() {
+-    var ns = this.namespace;
+-    return this.each("end.transition", function() {
+-      var p;
+-      if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
+-    });
+-  };
+-  d3_transitionPrototype.ease = function(value) {
+-    var id = this.id, ns = this.namespace;
+-    if (arguments.length < 1) return this.node()[ns][id].ease;
+-    if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
+-    return d3_selection_each(this, function(node) {
+-      node[ns][id].ease = value;
+-    });
+-  };
+-  d3_transitionPrototype.delay = function(value) {
+-    var id = this.id, ns = this.namespace;
+-    if (arguments.length < 1) return this.node()[ns][id].delay;
+-    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
+-      node[ns][id].delay = +value.call(node, node.__data__, i, j);
+-    } : (value = +value, function(node) {
+-      node[ns][id].delay = value;
+-    }));
+-  };
+-  d3_transitionPrototype.duration = function(value) {
+-    var id = this.id, ns = this.namespace;
+-    if (arguments.length < 1) return this.node()[ns][id].duration;
+-    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
+-      node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
+-    } : (value = Math.max(1, value), function(node) {
+-      node[ns][id].duration = value;
+-    }));
+-  };
+-  d3_transitionPrototype.each = function(type, listener) {
+-    var id = this.id, ns = this.namespace;
+-    if (arguments.length < 2) {
+-      var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
+-      try {
+-        d3_transitionInheritId = id;
+-        d3_selection_each(this, function(node, i, j) {
+-          d3_transitionInherit = node[ns][id];
+-          type.call(node, node.__data__, i, j);
+-        });
+-      } finally {
+-        d3_transitionInherit = inherit;
+-        d3_transitionInheritId = inheritId;
++
++    local.Promise = Promise;
++}
++
++polyfill();
++// Strange compat..
++Promise.polyfill = polyfill;
++Promise.Promise = Promise;
++
++return Promise;
++
++})));
++
++}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"_process":205}],80:[function(require,module,exports){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
++
++function EventEmitter() {
++  this._events = this._events || {};
++  this._maxListeners = this._maxListeners || undefined;
++}
++module.exports = EventEmitter;
++
++// Backwards-compat with node 0.10.x
++EventEmitter.EventEmitter = EventEmitter;
++
++EventEmitter.prototype._events = undefined;
++EventEmitter.prototype._maxListeners = undefined;
++
++// By default EventEmitters will print a warning if more than 10 listeners are
++// added to it. This is a useful default which helps finding memory leaks.
++EventEmitter.defaultMaxListeners = 10;
++
++// Obviously not all Emitters should be limited to 10. This function allows
++// that to be increased. Set to zero for unlimited.
++EventEmitter.prototype.setMaxListeners = function(n) {
++  if (!isNumber(n) || n < 0 || isNaN(n))
++    throw TypeError('n must be a positive number');
++  this._maxListeners = n;
++  return this;
++};
++
++EventEmitter.prototype.emit = function(type) {
++  var er, handler, len, args, i, listeners;
++
++  if (!this._events)
++    this._events = {};
++
++  // If there is no 'error' event listener then throw.
++  if (type === 'error') {
++    if (!this._events.error ||
++        (isObject(this._events.error) && !this._events.error.length)) {
++      er = arguments[1];
++      if (er instanceof Error) {
++        throw er; // Unhandled 'error' event
++      } else {
++        // At least give some kind of context to the user
++        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
++        err.context = er;
++        throw err;
+       }
+-    } else {
+-      d3_selection_each(this, function(node) {
+-        var transition = node[ns][id];
+-        (transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
+-      });
+     }
+-    return this;
+-  };
+-  d3_transitionPrototype.transition = function() {
+-    var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
+-    for (var j = 0, m = this.length; j < m; j++) {
+-      subgroups.push(subgroup = []);
+-      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
+-        if (node = group[i]) {
+-          transition = node[ns][id0];
+-          d3_transitionNode(node, i, ns, id1, {
+-            time: transition.time,
+-            ease: transition.ease,
+-            delay: transition.delay + transition.duration,
+-            duration: transition.duration
+-          });
+-        }
+-        subgroup.push(node);
+-      }
++  }
++
++  handler = this._events[type];
++
++  if (isUndefined(handler))
++    return false;
++
++  if (isFunction(handler)) {
++    switch (arguments.length) {
++      // fast cases
++      case 1:
++        handler.call(this);
++        break;
++      case 2:
++        handler.call(this, arguments[1]);
++        break;
++      case 3:
++        handler.call(this, arguments[1], arguments[2]);
++        break;
++      // slower
++      default:
++        args = Array.prototype.slice.call(arguments, 1);
++        handler.apply(this, args);
+     }
+-    return d3_transition(subgroups, ns, id1);
+-  };
+-  function d3_transitionNamespace(name) {
+-    return name == null ? "__transition__" : "__transition_" + name + "__";
++  } else if (isObject(handler)) {
++    args = Array.prototype.slice.call(arguments, 1);
++    listeners = handler.slice();
++    len = listeners.length;
++    for (i = 0; i < len; i++)
++      listeners[i].apply(this, args);
+   }
+-  function d3_transitionNode(node, i, ns, id, inherit) {
+-    var lock = node[ns] || (node[ns] = {
+-      active: 0,
+-      count: 0
+-    }), transition = lock[id], time, timer, duration, ease, tweens;
+-    function schedule(elapsed) {
+-      var delay = transition.delay;
+-      timer.t = delay + time;
+-      if (delay <= elapsed) return start(elapsed - delay);
+-      timer.c = start;
++
++  return true;
++};
++
++EventEmitter.prototype.addListener = function(type, listener) {
++  var m;
++
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
++
++  if (!this._events)
++    this._events = {};
++
++  // To avoid recursion in the case that type === "newListener"! Before
++  // adding it to the listeners, first emit "newListener".
++  if (this._events.newListener)
++    this.emit('newListener', type,
++              isFunction(listener.listener) ?
++              listener.listener : listener);
++
++  if (!this._events[type])
++    // Optimize the case of one listener. Don't need the extra array object.
++    this._events[type] = listener;
++  else if (isObject(this._events[type]))
++    // If we've already got an array, just append.
++    this._events[type].push(listener);
++  else
++    // Adding the second element, need to change to array.
++    this._events[type] = [this._events[type], listener];
++
++  // Check for listener leak
++  if (isObject(this._events[type]) && !this._events[type].warned) {
++    if (!isUndefined(this._maxListeners)) {
++      m = this._maxListeners;
++    } else {
++      m = EventEmitter.defaultMaxListeners;
+     }
+-    function start(elapsed) {
+-      var activeId = lock.active, active = lock[activeId];
+-      if (active) {
+-        active.timer.c = null;
+-        active.timer.t = NaN;
+-        --lock.count;
+-        delete lock[activeId];
+-        active.event && active.event.interrupt.call(node, node.__data__, active.index);
+-      }
+-      for (var cancelId in lock) {
+-        if (+cancelId < id) {
+-          var cancel = lock[cancelId];
+-          cancel.timer.c = null;
+-          cancel.timer.t = NaN;
+-          --lock.count;
+-          delete lock[cancelId];
+-        }
++
++    if (m && m > 0 && this._events[type].length > m) {
++      this._events[type].warned = true;
++      console.error('(node) warning: possible EventEmitter memory ' +
++                    'leak detected. %d listeners added. ' +
++                    'Use emitter.setMaxListeners() to increase limit.',
++                    this._events[type].length);
++      if (typeof console.trace === 'function') {
++        // not supported in IE 10
++        console.trace();
+       }
+-      timer.c = tick;
+-      d3_timer(function() {
+-        if (timer.c && tick(elapsed || 1)) {
+-          timer.c = null;
+-          timer.t = NaN;
+-        }
+-        return 1;
+-      }, 0, time);
+-      lock.active = id;
+-      transition.event && transition.event.start.call(node, node.__data__, i);
+-      tweens = [];
+-      transition.tween.forEach(function(key, value) {
+-        if (value = value.call(node, node.__data__, i)) {
+-          tweens.push(value);
+-        }
+-      });
+-      ease = transition.ease;
+-      duration = transition.duration;
+     }
+-    function tick(elapsed) {
+-      var t = elapsed / duration, e = ease(t), n = tweens.length;
+-      while (n > 0) {
+-        tweens[--n].call(node, e);
+-      }
+-      if (t >= 1) {
+-        transition.event && transition.event.end.call(node, node.__data__, i);
+-        if (--lock.count) delete lock[id]; else delete node[ns];
+-        return 1;
++  }
++
++  return this;
++};
++
++EventEmitter.prototype.on = EventEmitter.prototype.addListener;
++
++EventEmitter.prototype.once = function(type, listener) {
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
++
++  var fired = false;
++
++  function g() {
++    this.removeListener(type, g);
++
++    if (!fired) {
++      fired = true;
++      listener.apply(this, arguments);
++    }
++  }
++
++  g.listener = listener;
++  this.on(type, g);
++
++  return this;
++};
++
++// emits a 'removeListener' event iff the listener was removed
++EventEmitter.prototype.removeListener = function(type, listener) {
++  var list, position, length, i;
++
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
++
++  if (!this._events || !this._events[type])
++    return this;
++
++  list = this._events[type];
++  length = list.length;
++  position = -1;
++
++  if (list === listener ||
++      (isFunction(list.listener) && list.listener === listener)) {
++    delete this._events[type];
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
++
++  } else if (isObject(list)) {
++    for (i = length; i-- > 0;) {
++      if (list[i] === listener ||
++          (list[i].listener && list[i].listener === listener)) {
++        position = i;
++        break;
+       }
+     }
+-    if (!transition) {
+-      time = inherit.time;
+-      timer = d3_timer(schedule, 0, time);
+-      transition = lock[id] = {
+-        tween: new d3_Map(),
+-        time: time,
+-        timer: timer,
+-        delay: inherit.delay,
+-        duration: inherit.duration,
+-        ease: inherit.ease,
+-        index: i
+-      };
+-      inherit = null;
+-      ++lock.count;
++
++    if (position < 0)
++      return this;
++
++    if (list.length === 1) {
++      list.length = 0;
++      delete this._events[type];
++    } else {
++      list.splice(position, 1);
+     }
++
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
+   }
+-  d3.svg.axis = function() {
+-    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
+-    function axis(g) {
+-      g.each(function() {
+-        var g = d3.select(this);
+-        var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
+-        var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
+-        var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"), 
+-        d3.transition(path));
+-        tickEnter.append("line");
+-        tickEnter.append("text");
+-        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
+-        if (orient === "bottom" || orient === "top") {
+-          tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
+-          text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
+-          pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
+-        } else {
+-          tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
+-          text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
+-          pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
+-        }
+-        lineEnter.attr(y2, sign * innerTickSize);
+-        textEnter.attr(y1, sign * tickSpacing);
+-        lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
+-        textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
+-        if (scale1.rangeBand) {
+-          var x = scale1, dx = x.rangeBand() / 2;
+-          scale0 = scale1 = function(d) {
+-            return x(d) + dx;
+-          };
+-        } else if (scale0.rangeBand) {
+-          scale0 = scale1;
+-        } else {
+-          tickExit.call(tickTransform, scale1, scale0);
+-        }
+-        tickEnter.call(tickTransform, scale0, scale1);
+-        tickUpdate.call(tickTransform, scale1, scale1);
+-      });
++
++  return this;
++};
++
++EventEmitter.prototype.removeAllListeners = function(type) {
++  var key, listeners;
++
++  if (!this._events)
++    return this;
++
++  // not listening for removeListener, no need to emit
++  if (!this._events.removeListener) {
++    if (arguments.length === 0)
++      this._events = {};
++    else if (this._events[type])
++      delete this._events[type];
++    return this;
++  }
++
++  // emit removeListener for all listeners on all events
++  if (arguments.length === 0) {
++    for (key in this._events) {
++      if (key === 'removeListener') continue;
++      this.removeAllListeners(key);
+     }
+-    axis.scale = function(x) {
+-      if (!arguments.length) return scale;
+-      scale = x;
+-      return axis;
+-    };
+-    axis.orient = function(x) {
+-      if (!arguments.length) return orient;
+-      orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
+-      return axis;
+-    };
+-    axis.ticks = function() {
+-      if (!arguments.length) return tickArguments_;
+-      tickArguments_ = d3_array(arguments);
+-      return axis;
+-    };
+-    axis.tickValues = function(x) {
+-      if (!arguments.length) return tickValues;
+-      tickValues = x;
+-      return axis;
+-    };
+-    axis.tickFormat = function(x) {
+-      if (!arguments.length) return tickFormat_;
+-      tickFormat_ = x;
+-      return axis;
+-    };
+-    axis.tickSize = function(x) {
+-      var n = arguments.length;
+-      if (!n) return innerTickSize;
+-      innerTickSize = +x;
+-      outerTickSize = +arguments[n - 1];
+-      return axis;
+-    };
+-    axis.innerTickSize = function(x) {
+-      if (!arguments.length) return innerTickSize;
+-      innerTickSize = +x;
+-      return axis;
+-    };
+-    axis.outerTickSize = function(x) {
+-      if (!arguments.length) return outerTickSize;
+-      outerTickSize = +x;
+-      return axis;
+-    };
+-    axis.tickPadding = function(x) {
+-      if (!arguments.length) return tickPadding;
+-      tickPadding = +x;
+-      return axis;
+-    };
+-    axis.tickSubdivide = function() {
+-      return arguments.length && axis;
+-    };
+-    return axis;
+-  };
+-  var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
+-    top: 1,
+-    right: 1,
+-    bottom: 1,
+-    left: 1
+-  };
+-  function d3_svg_axisX(selection, x0, x1) {
+-    selection.attr("transform", function(d) {
+-      var v0 = x0(d);
+-      return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
+-    });
++    this.removeAllListeners('removeListener');
++    this._events = {};
++    return this;
+   }
+-  function d3_svg_axisY(selection, y0, y1) {
+-    selection.attr("transform", function(d) {
+-      var v0 = y0(d);
+-      return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
+-    });
++
++  listeners = this._events[type];
++
++  if (isFunction(listeners)) {
++    this.removeListener(type, listeners);
++  } else if (listeners) {
++    // LIFO order
++    while (listeners.length)
++      this.removeListener(type, listeners[listeners.length - 1]);
+   }
+-  d3.svg.brush = function() {
+-    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
+-    function brush(g) {
+-      g.each(function() {
+-        var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
+-        var background = g.selectAll(".background").data([ 0 ]);
+-        background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
+-        g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
+-        var resize = g.selectAll(".resize").data(resizes, d3_identity);
+-        resize.exit().remove();
+-        resize.enter().append("g").attr("class", function(d) {
+-          return "resize " + d;
+-        }).style("cursor", function(d) {
+-          return d3_svg_brushCursor[d];
+-        }).append("rect").attr("x", function(d) {
+-          return /[ew]$/.test(d) ? -3 : null;
+-        }).attr("y", function(d) {
+-          return /^[ns]/.test(d) ? -3 : null;
+-        }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
+-        resize.style("display", brush.empty() ? "none" : null);
+-        var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
+-        if (x) {
+-          range = d3_scaleRange(x);
+-          backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
+-          redrawX(gUpdate);
+-        }
+-        if (y) {
+-          range = d3_scaleRange(y);
+-          backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
+-          redrawY(gUpdate);
++  delete this._events[type];
++
++  return this;
++};
++
++EventEmitter.prototype.listeners = function(type) {
++  var ret;
++  if (!this._events || !this._events[type])
++    ret = [];
++  else if (isFunction(this._events[type]))
++    ret = [this._events[type]];
++  else
++    ret = this._events[type].slice();
++  return ret;
++};
++
++EventEmitter.prototype.listenerCount = function(type) {
++  if (this._events) {
++    var evlistener = this._events[type];
++
++    if (isFunction(evlistener))
++      return 1;
++    else if (evlistener)
++      return evlistener.length;
++  }
++  return 0;
++};
++
++EventEmitter.listenerCount = function(emitter, type) {
++  return emitter.listenerCount(type);
++};
++
++function isFunction(arg) {
++  return typeof arg === 'function';
++}
++
++function isNumber(arg) {
++  return typeof arg === 'number';
++}
++
++function isObject(arg) {
++  return typeof arg === 'object' && arg !== null;
++}
++
++function isUndefined(arg) {
++  return arg === void 0;
++}
++
++},{}],81:[function(require,module,exports){
++"use strict"
++
++module.exports = extractPlanes
++
++function extractPlanes(M, zNear, zFar) {
++  var z  = zNear || 0.0
++  var zf = zFar || 1.0
++  return [
++    [ M[12] + M[0], M[13] + M[1], M[14] + M[2], M[15] + M[3] ],
++    [ M[12] - M[0], M[13] - M[1], M[14] - M[2], M[15] - M[3] ],
++    [ M[12] + M[4], M[13] + M[5], M[14] + M[6], M[15] + M[7] ],
++    [ M[12] - M[4], M[13] - M[5], M[14] - M[6], M[15] - M[7] ],
++    [ z*M[12] + M[8], z*M[13] + M[9], z*M[14] + M[10], z*M[15] + M[11] ],
++    [ zf*M[12] - M[8], zf*M[13] - M[9], zf*M[14] - M[10], zf*M[15] - M[11] ]
++  ]
++}
++},{}],82:[function(require,module,exports){
++/**
++ * inspired by is-number <https://github.com/jonschlinkert/is-number>
++ * but significantly simplified and sped up by ignoring number and string constructors
++ * ie these return false:
++ *   new Number(1)
++ *   new String('1')
++ */
++
++'use strict';
++
++/**
++ * Is this string all whitespace?
++ * This solution kind of makes my brain hurt, but it's significantly faster
++ * than !str.trim() or any other solution I could find.
++ *
++ * whitespace codes from: http://en.wikipedia.org/wiki/Whitespace_character
++ * and verified with:
++ *
++ *  for(var i = 0; i < 65536; i++) {
++ *      var s = String.fromCharCode(i);
++ *      if(+s===0 && !s.trim()) console.log(i, s);
++ *  }
++ *
++ * which counts a couple of these as *not* whitespace, but finds nothing else
++ * that *is* whitespace. Note that charCodeAt stops at 16 bits, but it appears
++ * that there are no whitespace characters above this, and code points above
++ * this do not map onto white space characters.
++ */
++function allBlankCharCodes(str){
++    var l = str.length,
++        a;
++    for(var i = 0; i < l; i++) {
++        a = str.charCodeAt(i);
++        if((a < 9 || a > 13) && (a !== 32) && (a !== 133) && (a !== 160) &&
++            (a !== 5760) && (a !== 6158) && (a < 8192 || a > 8205) &&
++            (a !== 8232) && (a !== 8233) && (a !== 8239) && (a !== 8287) &&
++            (a !== 8288) && (a !== 12288) && (a !== 65279)) {
++                return false;
+         }
+-        redraw(gUpdate);
+-      });
+     }
+-    brush.event = function(g) {
+-      g.each(function() {
+-        var event_ = event.of(this, arguments), extent1 = {
+-          x: xExtent,
+-          y: yExtent,
+-          i: xExtentDomain,
+-          j: yExtentDomain
+-        }, extent0 = this.__chart__ || extent1;
+-        this.__chart__ = extent1;
+-        if (d3_transitionInheritId) {
+-          d3.select(this).transition().each("start.brush", function() {
+-            xExtentDomain = extent0.i;
+-            yExtentDomain = extent0.j;
+-            xExtent = extent0.x;
+-            yExtent = extent0.y;
+-            event_({
+-              type: "brushstart"
+-            });
+-          }).tween("brush:brush", function() {
+-            var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
+-            xExtentDomain = yExtentDomain = null;
+-            return function(t) {
+-              xExtent = extent1.x = xi(t);
+-              yExtent = extent1.y = yi(t);
+-              event_({
+-                type: "brush",
+-                mode: "resize"
+-              });
+-            };
+-          }).each("end.brush", function() {
+-            xExtentDomain = extent1.i;
+-            yExtentDomain = extent1.j;
+-            event_({
+-              type: "brush",
+-              mode: "resize"
+-            });
+-            event_({
+-              type: "brushend"
+-            });
+-          });
+-        } else {
+-          event_({
+-            type: "brushstart"
+-          });
+-          event_({
+-            type: "brush",
+-            mode: "resize"
+-          });
+-          event_({
+-            type: "brushend"
+-          });
+-        }
+-      });
+-    };
+-    function redraw(g) {
+-      g.selectAll(".resize").attr("transform", function(d) {
+-        return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
+-      });
++    return true;
++}
++
++module.exports = function(n) {
++    var type = typeof n;
++    if(type === 'string') {
++        var original = n;
++        n = +n;
++        // whitespace strings cast to zero - filter them out
++        if(n===0 && allBlankCharCodes(original)) return false;
+     }
+-    function redrawX(g) {
+-      g.select(".extent").attr("x", xExtent[0]);
+-      g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
++    else if(type !== 'number') return false;
++
++    return n - n < 1;
++};
++
++},{}],83:[function(require,module,exports){
++'use strict'
++
++module.exports = createFilteredVector
++
++var cubicHermite = require('cubic-hermite')
++var bsearch = require('binary-search-bounds')
++
++function clamp(lo, hi, x) {
++  return Math.min(hi, Math.max(lo, x))
++}
++
++function FilteredVector(state0, velocity0, t0) {
++  this.dimension  = state0.length
++  this.bounds     = [ new Array(this.dimension), new Array(this.dimension) ]
++  for(var i=0; i<this.dimension; ++i) {
++    this.bounds[0][i] = -Infinity
++    this.bounds[1][i] = Infinity
++  }
++  this._state     = state0.slice().reverse()
++  this._velocity  = velocity0.slice().reverse()
++  this._time      = [ t0 ]
++  this._scratch   = [ state0.slice(), state0.slice(), state0.slice(), state0.slice(), state0.slice() ]
++}
++
++var proto = FilteredVector.prototype
++
++proto.flush = function(t) {
++  var idx = bsearch.gt(this._time, t) - 1
++  if(idx <= 0) {
++    return
++  }
++  this._time.splice(0, idx)
++  this._state.splice(0, idx * this.dimension)
++  this._velocity.splice(0, idx * this.dimension)
++}
++
++proto.curve = function(t) {
++  var time      = this._time
++  var n         = time.length
++  var idx       = bsearch.le(time, t)
++  var result    = this._scratch[0]
++  var state     = this._state
++  var velocity  = this._velocity
++  var d         = this.dimension
++  var bounds    = this.bounds
++  if(idx < 0) {
++    var ptr = d-1
++    for(var i=0; i<d; ++i, --ptr) {
++      result[i] = state[ptr]
+     }
+-    function redrawY(g) {
+-      g.select(".extent").attr("y", yExtent[0]);
+-      g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
++  } else if(idx >= n-1) {
++    var ptr = state.length-1
++    var tf = t - time[n-1]
++    for(var i=0; i<d; ++i, --ptr) {
++      result[i] = state[ptr] + tf * velocity[ptr]
+     }
+-    function brushstart() {
+-      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(target), center, origin = d3.mouse(target), offset;
+-      var w = d3.select(d3_window(target)).on("keydown.brush", keydown).on("keyup.brush", keyup);
+-      if (d3.event.changedTouches) {
+-        w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
+-      } else {
+-        w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
+-      }
+-      g.interrupt().selectAll("*").interrupt();
+-      if (dragging) {
+-        origin[0] = xExtent[0] - origin[0];
+-        origin[1] = yExtent[0] - origin[1];
+-      } else if (resizing) {
+-        var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
+-        offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
+-        origin[0] = xExtent[ex];
+-        origin[1] = yExtent[ey];
+-      } else if (d3.event.altKey) center = origin.slice();
+-      g.style("pointer-events", "none").selectAll(".resize").style("display", null);
+-      d3.select("body").style("cursor", eventTarget.style("cursor"));
+-      event_({
+-        type: "brushstart"
+-      });
+-      brushmove();
+-      function keydown() {
+-        if (d3.event.keyCode == 32) {
+-          if (!dragging) {
+-            center = null;
+-            origin[0] -= xExtent[1];
+-            origin[1] -= yExtent[1];
+-            dragging = 2;
+-          }
+-          d3_eventPreventDefault();
+-        }
+-      }
+-      function keyup() {
+-        if (d3.event.keyCode == 32 && dragging == 2) {
+-          origin[0] += xExtent[1];
+-          origin[1] += yExtent[1];
+-          dragging = 0;
+-          d3_eventPreventDefault();
+-        }
+-      }
+-      function brushmove() {
+-        var point = d3.mouse(target), moved = false;
+-        if (offset) {
+-          point[0] += offset[0];
+-          point[1] += offset[1];
+-        }
+-        if (!dragging) {
+-          if (d3.event.altKey) {
+-            if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
+-            origin[0] = xExtent[+(point[0] < center[0])];
+-            origin[1] = yExtent[+(point[1] < center[1])];
+-          } else center = null;
+-        }
+-        if (resizingX && move1(point, x, 0)) {
+-          redrawX(g);
+-          moved = true;
+-        }
+-        if (resizingY && move1(point, y, 1)) {
+-          redrawY(g);
+-          moved = true;
+-        }
+-        if (moved) {
+-          redraw(g);
+-          event_({
+-            type: "brush",
+-            mode: dragging ? "move" : "resize"
+-          });
+-        }
+-      }
+-      function move1(point, scale, i) {
+-        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
+-        if (dragging) {
+-          r0 -= position;
+-          r1 -= size + position;
+-        }
+-        min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
+-        if (dragging) {
+-          max = (min += position) + size;
+-        } else {
+-          if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
+-          if (position < min) {
+-            max = min;
+-            min = position;
+-          } else {
+-            max = position;
+-          }
+-        }
+-        if (extent[0] != min || extent[1] != max) {
+-          if (i) yExtentDomain = null; else xExtentDomain = null;
+-          extent[0] = min;
+-          extent[1] = max;
+-          return true;
+-        }
+-      }
+-      function brushend() {
+-        brushmove();
+-        g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
+-        d3.select("body").style("cursor", null);
+-        w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
+-        dragRestore();
+-        event_({
+-          type: "brushend"
+-        });
+-      }
++  } else {
++    var ptr = d * (idx+1) - 1
++    var t0  = time[idx]
++    var t1  = time[idx+1]
++    var dt  = (t1 - t0) || 1.0
++    var x0  = this._scratch[1]
++    var x1  = this._scratch[2]
++    var v0  = this._scratch[3]
++    var v1  = this._scratch[4]
++    var steady = true
++    for(var i=0; i<d; ++i, --ptr) {
++      x0[i] = state[ptr]
++      v0[i] = velocity[ptr] * dt
++      x1[i] = state[ptr+d]
++      v1[i] = velocity[ptr+d] * dt
++      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
+     }
+-    brush.x = function(z) {
+-      if (!arguments.length) return x;
+-      x = z;
+-      resizes = d3_svg_brushResizes[!x << 1 | !y];
+-      return brush;
+-    };
+-    brush.y = function(z) {
+-      if (!arguments.length) return y;
+-      y = z;
+-      resizes = d3_svg_brushResizes[!x << 1 | !y];
+-      return brush;
+-    };
+-    brush.clamp = function(z) {
+-      if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
+-      if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
+-      return brush;
+-    };
+-    brush.extent = function(z) {
+-      var x0, x1, y0, y1, t;
+-      if (!arguments.length) {
+-        if (x) {
+-          if (xExtentDomain) {
+-            x0 = xExtentDomain[0], x1 = xExtentDomain[1];
+-          } else {
+-            x0 = xExtent[0], x1 = xExtent[1];
+-            if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
+-            if (x1 < x0) t = x0, x0 = x1, x1 = t;
+-          }
+-        }
+-        if (y) {
+-          if (yExtentDomain) {
+-            y0 = yExtentDomain[0], y1 = yExtentDomain[1];
+-          } else {
+-            y0 = yExtent[0], y1 = yExtent[1];
+-            if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
+-            if (y1 < y0) t = y0, y0 = y1, y1 = t;
+-          }
+-        }
+-        return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
+-      }
+-      if (x) {
+-        x0 = z[0], x1 = z[1];
+-        if (y) x0 = x0[0], x1 = x1[0];
+-        xExtentDomain = [ x0, x1 ];
+-        if (x.invert) x0 = x(x0), x1 = x(x1);
+-        if (x1 < x0) t = x0, x0 = x1, x1 = t;
+-        if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
+-      }
+-      if (y) {
+-        y0 = z[0], y1 = z[1];
+-        if (x) y0 = y0[1], y1 = y1[1];
+-        yExtentDomain = [ y0, y1 ];
+-        if (y.invert) y0 = y(y0), y1 = y(y1);
+-        if (y1 < y0) t = y0, y0 = y1, y1 = t;
+-        if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
+-      }
+-      return brush;
+-    };
+-    brush.clear = function() {
+-      if (!brush.empty()) {
+-        xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
+-        xExtentDomain = yExtentDomain = null;
++    if(steady) {
++      for(var i=0; i<d; ++i) {
++        result[i] = x0[i]
+       }
+-      return brush;
+-    };
+-    brush.empty = function() {
+-      return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
+-    };
+-    return d3.rebind(brush, event, "on");
+-  };
+-  var d3_svg_brushCursor = {
+-    n: "ns-resize",
+-    e: "ew-resize",
+-    s: "ns-resize",
+-    w: "ew-resize",
+-    nw: "nwse-resize",
+-    ne: "nesw-resize",
+-    se: "nwse-resize",
+-    sw: "nesw-resize"
+-  };
+-  var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
+-  var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
+-  var d3_time_formatUtc = d3_time_format.utc;
+-  var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
+-  d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
+-  function d3_time_formatIsoNative(date) {
+-    return date.toISOString();
+-  }
+-  d3_time_formatIsoNative.parse = function(string) {
+-    var date = new Date(string);
+-    return isNaN(date) ? null : date;
+-  };
+-  d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
+-  d3_time.second = d3_time_interval(function(date) {
+-    return new d3_date(Math.floor(date / 1e3) * 1e3);
+-  }, function(date, offset) {
+-    date.setTime(date.getTime() + Math.floor(offset) * 1e3);
+-  }, function(date) {
+-    return date.getSeconds();
+-  });
+-  d3_time.seconds = d3_time.second.range;
+-  d3_time.seconds.utc = d3_time.second.utc.range;
+-  d3_time.minute = d3_time_interval(function(date) {
+-    return new d3_date(Math.floor(date / 6e4) * 6e4);
+-  }, function(date, offset) {
+-    date.setTime(date.getTime() + Math.floor(offset) * 6e4);
+-  }, function(date) {
+-    return date.getMinutes();
+-  });
+-  d3_time.minutes = d3_time.minute.range;
+-  d3_time.minutes.utc = d3_time.minute.utc.range;
+-  d3_time.hour = d3_time_interval(function(date) {
+-    var timezone = date.getTimezoneOffset() / 60;
+-    return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
+-  }, function(date, offset) {
+-    date.setTime(date.getTime() + Math.floor(offset) * 36e5);
+-  }, function(date) {
+-    return date.getHours();
+-  });
+-  d3_time.hours = d3_time.hour.range;
+-  d3_time.hours.utc = d3_time.hour.utc.range;
+-  d3_time.month = d3_time_interval(function(date) {
+-    date = d3_time.day(date);
+-    date.setDate(1);
+-    return date;
+-  }, function(date, offset) {
+-    date.setMonth(date.getMonth() + offset);
+-  }, function(date) {
+-    return date.getMonth();
+-  });
+-  d3_time.months = d3_time.month.range;
+-  d3_time.months.utc = d3_time.month.utc.range;
+-  function d3_time_scale(linear, methods, format) {
+-    function scale(x) {
+-      return linear(x);
+-    }
+-    scale.invert = function(x) {
+-      return d3_time_scaleDate(linear.invert(x));
+-    };
+-    scale.domain = function(x) {
+-      if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
+-      linear.domain(x);
+-      return scale;
+-    };
+-    function tickMethod(extent, count) {
+-      var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
+-      return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
+-        return d / 31536e6;
+-      }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
++    } else {
++      cubicHermite(x0, v0, x1, v1, (t-t0)/dt, result)
+     }
+-    scale.nice = function(interval, skip) {
+-      var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
+-      if (method) interval = method[0], skip = method[1];
+-      function skipped(date) {
+-        return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
+-      }
+-      return scale.domain(d3_scale_nice(domain, skip > 1 ? {
+-        floor: function(date) {
+-          while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
+-          return date;
+-        },
+-        ceil: function(date) {
+-          while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
+-          return date;
+-        }
+-      } : interval));
+-    };
+-    scale.ticks = function(interval, skip) {
+-      var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
+-        range: interval
+-      }, skip ];
+-      if (method) interval = method[0], skip = method[1];
+-      return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
+-    };
+-    scale.tickFormat = function() {
+-      return format;
+-    };
+-    scale.copy = function() {
+-      return d3_time_scale(linear.copy(), methods, format);
+-    };
+-    return d3_scale_linearRebind(scale, linear);
+-  }
+-  function d3_time_scaleDate(t) {
+-    return new Date(t);
+-  }
+-  var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
+-  var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
+-  var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
+-    return d.getMilliseconds();
+-  } ], [ ":%S", function(d) {
+-    return d.getSeconds();
+-  } ], [ "%I:%M", function(d) {
+-    return d.getMinutes();
+-  } ], [ "%I %p", function(d) {
+-    return d.getHours();
+-  } ], [ "%a %d", function(d) {
+-    return d.getDay() && d.getDate() != 1;
+-  } ], [ "%b %d", function(d) {
+-    return d.getDate() != 1;
+-  } ], [ "%B", function(d) {
+-    return d.getMonth();
+-  } ], [ "%Y", d3_true ] ]);
+-  var d3_time_scaleMilliseconds = {
+-    range: function(start, stop, step) {
+-      return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
+-    },
+-    floor: d3_identity,
+-    ceil: d3_identity
+-  };
+-  d3_time_scaleLocalMethods.year = d3_time.year;
+-  d3_time.scale = function() {
+-    return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
+-  };
+-  var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
+-    return [ m[0].utc, m[1] ];
+-  });
+-  var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
+-    return d.getUTCMilliseconds();
+-  } ], [ ":%S", function(d) {
+-    return d.getUTCSeconds();
+-  } ], [ "%I:%M", function(d) {
+-    return d.getUTCMinutes();
+-  } ], [ "%I %p", function(d) {
+-    return d.getUTCHours();
+-  } ], [ "%a %d", function(d) {
+-    return d.getUTCDay() && d.getUTCDate() != 1;
+-  } ], [ "%b %d", function(d) {
+-    return d.getUTCDate() != 1;
+-  } ], [ "%B", function(d) {
+-    return d.getUTCMonth();
+-  } ], [ "%Y", d3_true ] ]);
+-  d3_time_scaleUtcMethods.year = d3_time.year.utc;
+-  d3_time.scale.utc = function() {
+-    return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
+-  };
+-  d3.text = d3_xhrType(function(request) {
+-    return request.responseText;
+-  });
+-  d3.json = function(url, callback) {
+-    return d3_xhr(url, "application/json", d3_json, callback);
+-  };
+-  function d3_json(request) {
+-    return JSON.parse(request.responseText);
+   }
+-  d3.html = function(url, callback) {
+-    return d3_xhr(url, "text/html", d3_html, callback);
+-  };
+-  function d3_html(request) {
+-    var range = d3_document.createRange();
+-    range.selectNode(d3_document.body);
+-    return range.createContextualFragment(request.responseText);
++  var lo = bounds[0]
++  var hi = bounds[1]
++  for(var i=0; i<d; ++i) {
++    result[i] = clamp(lo[i], hi[i], result[i])
+   }
+-  d3.xml = d3_xhrType(function(request) {
+-    return request.responseXML;
+-  });
+-  if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
+-}();
+-},{}],101:[function(require,module,exports){
+-"use strict"
+-
+-var ch = require("incremental-convex-hull")
+-var uniq = require("uniq")
++  return result
++}
+ 
+-module.exports = triangulate
++proto.dcurve = function(t) {
++  var time     = this._time
++  var n        = time.length
++  var idx      = bsearch.le(time, t)
++  var result   = this._scratch[0]
++  var state    = this._state
++  var velocity = this._velocity
++  var d        = this.dimension
++  if(idx >= n-1) {
++    var ptr = state.length-1
++    var tf = t - time[n-1]
++    for(var i=0; i<d; ++i, --ptr) {
++      result[i] = velocity[ptr]
++    }
++  } else {
++    var ptr = d * (idx+1) - 1
++    var t0 = time[idx]
++    var t1 = time[idx+1]
++    var dt = (t1 - t0) || 1.0
++    var x0 = this._scratch[1]
++    var x1 = this._scratch[2]
++    var v0 = this._scratch[3]
++    var v1 = this._scratch[4]
++    var steady = true
++    for(var i=0; i<d; ++i, --ptr) {
++      x0[i] = state[ptr]
++      v0[i] = velocity[ptr] * dt
++      x1[i] = state[ptr+d]
++      v1[i] = velocity[ptr+d] * dt
++      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
++    }
++    if(steady) {
++      for(var i=0; i<d; ++i) {
++        result[i] = 0.0
++      }
++    } else {
++      cubicHermite.derivative(x0, v0, x1, v1, (t-t0)/dt, result)
++      for(var i=0; i<d; ++i) {
++        result[i] /= dt
++      }
++    }
++  }
++  return result
++}
+ 
+-function LiftedPoint(p, i) {
+-  this.point = p
+-  this.index = i
++proto.lastT = function() {
++  var time = this._time
++  return time[time.length-1]
+ }
+ 
+-function compareLifted(a, b) {
+-  var ap = a.point
+-  var bp = b.point
+-  var d = ap.length
+-  for(var i=0; i<d; ++i) {
+-    var s = bp[i] - ap[i]
+-    if(s) {
+-      return s
++proto.stable = function() {
++  var velocity = this._velocity
++  var ptr = velocity.length
++  for(var i=this.dimension-1; i>=0; --i) {
++    if(velocity[--ptr]) {
++      return false
+     }
+   }
+-  return 0
++  return true
+ }
+ 
+-function triangulate1D(n, points, includePointAtInfinity) {
+-  if(n === 1) {
+-    if(includePointAtInfinity) {
+-      return [ [-1, 0] ]
+-    } else {
+-      return []
++proto.jump = function(t) {
++  var t0 = this.lastT()
++  var d  = this.dimension
++  if(t < t0 || arguments.length !== d+1) {
++    return
++  }
++  var state     = this._state
++  var velocity  = this._velocity
++  var ptr       = state.length-this.dimension
++  var bounds    = this.bounds
++  var lo        = bounds[0]
++  var hi        = bounds[1]
++  this._time.push(t0, t)
++  for(var j=0; j<2; ++j) {
++    for(var i=0; i<d; ++i) {
++      state.push(state[ptr++])
++      velocity.push(0)
+     }
+   }
+-  var lifted = points.map(function(p, i) {
+-    return [ p[0], i ]
+-  })
+-  lifted.sort(function(a,b) {
+-    return a[0] - b[0]
+-  })
+-  var cells = new Array(n - 1)
+-  for(var i=1; i<n; ++i) {
+-    var a = lifted[i-1]
+-    var b = lifted[i]
+-    cells[i-1] = [ a[1], b[1] ]
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
++    velocity.push(0)
+   }
+-  if(includePointAtInfinity) {
+-    cells.push(
+-      [ -1, cells[0][1], ],
+-      [ cells[n-1][1], -1 ])
++}
++
++proto.push = function(t) {
++  var t0 = this.lastT()
++  var d  = this.dimension
++  if(t < t0 || arguments.length !== d+1) {
++    return
++  }
++  var state     = this._state
++  var velocity  = this._velocity
++  var ptr       = state.length-this.dimension
++  var dt        = t - t0
++  var bounds    = this.bounds
++  var lo        = bounds[0]
++  var hi        = bounds[1]
++  var sf        = (dt > 1e-6) ? 1/dt : 0
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    var xc = clamp(lo[i-1], hi[i-1], arguments[i])
++    state.push(xc)
++    velocity.push((xc - state[ptr++]) * sf)
+   }
+-  return cells
+ }
+ 
+-function triangulate(points, includePointAtInfinity) {
+-  var n = points.length
+-  if(n === 0) {
+-    return []
++proto.set = function(t) {
++  var d = this.dimension
++  if(t < this.lastT() || arguments.length !== d+1) {
++    return
+   }
+-  
+-  var d = points[0].length
+-  if(d < 1) {
+-    return []
++  var state     = this._state
++  var velocity  = this._velocity
++  var bounds    = this.bounds
++  var lo        = bounds[0]
++  var hi        = bounds[1]
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
++    velocity.push(0)
+   }
++}
+ 
+-  //Special case:  For 1D we can just sort the points
+-  if(d === 1) {
+-    return triangulate1D(n, points, includePointAtInfinity)
++proto.move = function(t) {
++  var t0 = this.lastT()
++  var d  = this.dimension
++  if(t <= t0 || arguments.length !== d+1) {
++    return
+   }
+-  
+-  //Lift points, sort
+-  var lifted = new Array(n)
+-  var upper = 1.0
+-  for(var i=0; i<n; ++i) {
+-    var p = points[i]
+-    var x = new Array(d+1)
+-    var l = 0.0
+-    for(var j=0; j<d; ++j) {
+-      var v = p[j]
+-      x[j] = v
+-      l += v * v
+-    }
+-    x[d] = l
+-    lifted[i] = new LiftedPoint(x, i)
+-    upper = Math.max(l, upper)
++  var state    = this._state
++  var velocity = this._velocity
++  var statePtr = state.length - this.dimension
++  var bounds   = this.bounds
++  var lo       = bounds[0]
++  var hi       = bounds[1]
++  var dt       = t - t0
++  var sf       = (dt > 1e-6) ? 1/dt : 0.0
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    var dx = arguments[i]
++    state.push(clamp(lo[i-1], hi[i-1], state[statePtr++] + dx))
++    velocity.push(dx * sf)
+   }
+-  uniq(lifted, compareLifted)
+-  
+-  //Double points
+-  n = lifted.length
++}
+ 
+-  //Create new list of points
+-  var dpoints = new Array(n + d + 1)
+-  var dindex = new Array(n + d + 1)
++proto.idle = function(t) {
++  var t0 = this.lastT()
++  if(t < t0) {
++    return
++  }
++  var d        = this.dimension
++  var state    = this._state
++  var velocity = this._velocity
++  var statePtr = state.length-d
++  var bounds   = this.bounds
++  var lo       = bounds[0]
++  var hi       = bounds[1]
++  var dt       = t - t0
++  this._time.push(t)
++  for(var i=d-1; i>=0; --i) {
++    state.push(clamp(lo[i], hi[i], state[statePtr] + dt * velocity[statePtr]))
++    velocity.push(0)
++    statePtr += 1
++  }
++}
+ 
+-  //Add steiner points at top
+-  var u = (d+1) * (d+1) * upper
+-  var y = new Array(d+1)
+-  for(var i=0; i<=d; ++i) {
+-    y[i] = 0.0
++function getZero(d) {
++  var result = new Array(d)
++  for(var i=0; i<d; ++i) {
++    result[i] = 0.0
+   }
+-  y[d] = u
++  return result
++}
+ 
+-  dpoints[0] = y.slice()
+-  dindex[0] = -1
++function createFilteredVector(initState, initVelocity, initTime) {
++  switch(arguments.length) {
++    case 0:
++      return new FilteredVector([0], [0], 0)
++    case 1:
++      if(typeof initState === 'number') {
++        var zero = getZero(initState)
++        return new FilteredVector(zero, zero, 0)
++      } else {
++        return new FilteredVector(initState, getZero(initState.length), 0)
++      }
++    case 2:
++      if(typeof initVelocity === 'number') {
++        var zero = getZero(initState.length)
++        return new FilteredVector(initState, zero, +initVelocity)
++      } else {
++        initTime = 0
++      }
++    case 3:
++      if(initState.length !== initVelocity.length) {
++        throw new Error('state and velocity lengths must match')
++      }
++      return new FilteredVector(initState, initVelocity, initTime)
++  }
++}
+ 
+-  for(var i=0; i<=d; ++i) {
+-    var x = y.slice()
+-    x[i] = 1
+-    dpoints[i+1] = x
+-    dindex[i+1] = -1
++},{"binary-search-bounds":34,"cubic-hermite":69}],84:[function(require,module,exports){
++"use strict"
++
++module.exports = createRBTree
++
++var RED   = 0
++var BLACK = 1
++
++function RBNode(color, key, value, left, right, count) {
++  this._color = color
++  this.key = key
++  this.value = value
++  this.left = left
++  this.right = right
++  this._count = count
++}
++
++function cloneNode(node) {
++  return new RBNode(node._color, node.key, node.value, node.left, node.right, node._count)
++}
++
++function repaint(color, node) {
++  return new RBNode(color, node.key, node.value, node.left, node.right, node._count)
++}
++
++function recount(node) {
++  node._count = 1 + (node.left ? node.left._count : 0) + (node.right ? node.right._count : 0)
++}
++
++function RedBlackTree(compare, root) {
++  this._compare = compare
++  this.root = root
++}
++
++var proto = RedBlackTree.prototype
++
++Object.defineProperty(proto, "keys", {
++  get: function() {
++    var result = []
++    this.forEach(function(k,v) {
++      result.push(k)
++    })
++    return result
+   }
++})
+ 
+-  //Copy rest of the points over
+-  for(var i=0; i<n; ++i) {
+-    var h = lifted[i]
+-    dpoints[i + d + 1] = h.point
+-    dindex[i + d + 1] =  h.index
++Object.defineProperty(proto, "values", {
++  get: function() {
++    var result = []
++    this.forEach(function(k,v) {
++      result.push(v)
++    })
++    return result
+   }
++})
+ 
+-  //Construct convex hull
+-  var hull = ch(dpoints, false)
+-  if(includePointAtInfinity) {
+-    hull = hull.filter(function(cell) {
+-      var count = 0
+-      for(var j=0; j<=d; ++j) {
+-        var v = dindex[cell[j]]
+-        if(v < 0) {
+-          if(++count >= 2) {
+-            return false
++//Returns the number of nodes in the tree
++Object.defineProperty(proto, "length", {
++  get: function() {
++    if(this.root) {
++      return this.root._count
++    }
++    return 0
++  }
++})
++
++//Insert a new item into the tree
++proto.insert = function(key, value) {
++  var cmp = this._compare
++  //Find point to insert new node at
++  var n = this.root
++  var n_stack = []
++  var d_stack = []
++  while(n) {
++    var d = cmp(key, n.key)
++    n_stack.push(n)
++    d_stack.push(d)
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
++  }
++  //Rebuild path to leaf node
++  n_stack.push(new RBNode(RED, key, value, null, null, 1))
++  for(var s=n_stack.length-2; s>=0; --s) {
++    var n = n_stack[s]
++    if(d_stack[s] <= 0) {
++      n_stack[s] = new RBNode(n._color, n.key, n.value, n_stack[s+1], n.right, n._count+1)
++    } else {
++      n_stack[s] = new RBNode(n._color, n.key, n.value, n.left, n_stack[s+1], n._count+1)
++    }
++  }
++  //Rebalance tree using rotations
++  //console.log("start insert", key, d_stack)
++  for(var s=n_stack.length-1; s>1; --s) {
++    var p = n_stack[s-1]
++    var n = n_stack[s]
++    if(p._color === BLACK || n._color === BLACK) {
++      break
++    }
++    var pp = n_stack[s-2]
++    if(pp.left === p) {
++      if(p.left === n) {
++        var y = pp.right
++        if(y && y._color === RED) {
++          //console.log("LLr")
++          p._color = BLACK
++          pp.right = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("LLb")
++          pp._color = RED
++          pp.left = p.right
++          p._color = BLACK
++          p.right = pp
++          n_stack[s-2] = p
++          n_stack[s-1] = n
++          recount(pp)
++          recount(p)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.left === pp) {
++              ppp.left = p
++            } else {
++              ppp.right = p
++            }
+           }
++          break
++        }
++      } else {
++        var y = pp.right
++        if(y && y._color === RED) {
++          //console.log("LRr")
++          p._color = BLACK
++          pp.right = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("LRb")
++          p.right = n.left
++          pp._color = RED
++          pp.left = n.right
++          n._color = BLACK
++          n.left = p
++          n.right = pp
++          n_stack[s-2] = n
++          n_stack[s-1] = p
++          recount(pp)
++          recount(p)
++          recount(n)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.left === pp) {
++              ppp.left = n
++            } else {
++              ppp.right = n
++            }
++          }
++          break
+         }
+-        cell[j] = v
+       }
+-      return true
+-    })
+-  } else {
+-    hull = hull.filter(function(cell) {
+-      for(var i=0; i<=d; ++i) {
+-        var v = dindex[cell[i]]
+-        if(v < 0) {
+-          return false
++    } else {
++      if(p.right === n) {
++        var y = pp.left
++        if(y && y._color === RED) {
++          //console.log("RRr", y.key)
++          p._color = BLACK
++          pp.left = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("RRb")
++          pp._color = RED
++          pp.right = p.left
++          p._color = BLACK
++          p.left = pp
++          n_stack[s-2] = p
++          n_stack[s-1] = n
++          recount(pp)
++          recount(p)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.right === pp) {
++              ppp.right = p
++            } else {
++              ppp.left = p
++            }
++          }
++          break
++        }
++      } else {
++        var y = pp.left
++        if(y && y._color === RED) {
++          //console.log("RLr")
++          p._color = BLACK
++          pp.left = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("RLb")
++          p.left = n.right
++          pp._color = RED
++          pp.right = n.left
++          n._color = BLACK
++          n.right = p
++          n.left = pp
++          n_stack[s-2] = n
++          n_stack[s-1] = p
++          recount(pp)
++          recount(p)
++          recount(n)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.right === pp) {
++              ppp.right = n
++            } else {
++              ppp.left = n
++            }
++          }
++          break
+         }
+-        cell[i] = v
+       }
+-      return true
+-    })
+-  }
+-
+-  if(d & 1) {
+-    for(var i=0; i<hull.length; ++i) {
+-      var h = hull[i]
+-      var x = h[0]
+-      h[0] = h[1]
+-      h[1] = x
+     }
+   }
+-
+-  return hull
++  //Return new tree
++  n_stack[0]._color = BLACK
++  return new RedBlackTree(cmp, n_stack[0])
+ }
+-},{"incremental-convex-hull":201,"uniq":243}],102:[function(require,module,exports){
+-"use strict"
+ 
+-function dupe_array(count, value, i) {
+-  var c = count[i]|0
+-  if(c <= 0) {
+-    return []
++
++//Visit all nodes inorder
++function doVisitFull(visit, node) {
++  if(node.left) {
++    var v = doVisitFull(visit, node.left)
++    if(v) { return v }
+   }
+-  var result = new Array(c), j
+-  if(i === count.length-1) {
+-    for(j=0; j<c; ++j) {
+-      result[j] = value
+-    }
+-  } else {
+-    for(j=0; j<c; ++j) {
+-      result[j] = dupe_array(count, value, i+1)
++  var v = visit(node.key, node.value)
++  if(v) { return v }
++  if(node.right) {
++    return doVisitFull(visit, node.right)
++  }
++}
++
++//Visit half nodes in order
++function doVisitHalf(lo, compare, visit, node) {
++  var l = compare(lo, node.key)
++  if(l <= 0) {
++    if(node.left) {
++      var v = doVisitHalf(lo, compare, visit, node.left)
++      if(v) { return v }
+     }
++    var v = visit(node.key, node.value)
++    if(v) { return v }
++  }
++  if(node.right) {
++    return doVisitHalf(lo, compare, visit, node.right)
+   }
+-  return result
+ }
+ 
+-function dupe_number(count, value) {
+-  var result, i
+-  result = new Array(count)
+-  for(i=0; i<count; ++i) {
+-    result[i] = value
++//Visit all nodes within a range
++function doVisit(lo, hi, compare, visit, node) {
++  var l = compare(lo, node.key)
++  var h = compare(hi, node.key)
++  var v
++  if(l <= 0) {
++    if(node.left) {
++      v = doVisit(lo, hi, compare, visit, node.left)
++      if(v) { return v }
++    }
++    if(h > 0) {
++      v = visit(node.key, node.value)
++      if(v) { return v }
++    }
++  }
++  if(h > 0 && node.right) {
++    return doVisit(lo, hi, compare, visit, node.right)
+   }
+-  return result
+ }
+ 
+-function dupe(count, value) {
+-  if(typeof value === "undefined") {
+-    value = 0
++
++proto.forEach = function rbTreeForEach(visit, lo, hi) {
++  if(!this.root) {
++    return
+   }
+-  switch(typeof count) {
+-    case "number":
+-      if(count > 0) {
+-        return dupe_number(count|0, value)
+-      }
++  switch(arguments.length) {
++    case 1:
++      return doVisitFull(visit, this.root)
+     break
+-    case "object":
+-      if(typeof (count.length) === "number") {
+-        return dupe_array(count, value, 0)
++
++    case 2:
++      return doVisitHalf(lo, this._compare, visit, this.root)
++    break
++
++    case 3:
++      if(this._compare(lo, hi) >= 0) {
++        return
+       }
++      return doVisit(lo, hi, this._compare, visit, this.root)
+     break
+   }
+-  return []
+ }
+ 
+-module.exports = dupe
+-},{}],103:[function(require,module,exports){
+-(function (process,global){
+-/*!
+- * @overview es6-promise - a tiny implementation of Promises/A+.
+- * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
+- * @license   Licensed under MIT license
+- *            See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
+- * @version   3.1.2
+- */
+-
+-(function() {
+-    "use strict";
+-    function lib$es6$promise$utils$$objectOrFunction(x) {
+-      return typeof x === 'function' || (typeof x === 'object' && x !== null);
++//First item in list
++Object.defineProperty(proto, "begin", {
++  get: function() {
++    var stack = []
++    var n = this.root
++    while(n) {
++      stack.push(n)
++      n = n.left
+     }
++    return new RedBlackTreeIterator(this, stack)
++  }
++})
+ 
+-    function lib$es6$promise$utils$$isFunction(x) {
+-      return typeof x === 'function';
++//Last item in list
++Object.defineProperty(proto, "end", {
++  get: function() {
++    var stack = []
++    var n = this.root
++    while(n) {
++      stack.push(n)
++      n = n.right
+     }
++    return new RedBlackTreeIterator(this, stack)
++  }
++})
+ 
+-    function lib$es6$promise$utils$$isMaybeThenable(x) {
+-      return typeof x === 'object' && x !== null;
++//Find the ith item in the tree
++proto.at = function(idx) {
++  if(idx < 0) {
++    return new RedBlackTreeIterator(this, [])
++  }
++  var n = this.root
++  var stack = []
++  while(true) {
++    stack.push(n)
++    if(n.left) {
++      if(idx < n.left._count) {
++        n = n.left
++        continue
++      }
++      idx -= n.left._count
+     }
+-
+-    var lib$es6$promise$utils$$_isArray;
+-    if (!Array.isArray) {
+-      lib$es6$promise$utils$$_isArray = function (x) {
+-        return Object.prototype.toString.call(x) === '[object Array]';
+-      };
+-    } else {
+-      lib$es6$promise$utils$$_isArray = Array.isArray;
+-    }
+-
+-    var lib$es6$promise$utils$$isArray = lib$es6$promise$utils$$_isArray;
+-    var lib$es6$promise$asap$$len = 0;
+-    var lib$es6$promise$asap$$vertxNext;
+-    var lib$es6$promise$asap$$customSchedulerFn;
+-
+-    var lib$es6$promise$asap$$asap = function asap(callback, arg) {
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len] = callback;
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len + 1] = arg;
+-      lib$es6$promise$asap$$len += 2;
+-      if (lib$es6$promise$asap$$len === 2) {
+-        // If len is 2, that means that we need to schedule an async flush.
+-        // If additional callbacks are queued before the queue is flushed, they
+-        // will be processed by this flush that we are scheduling.
+-        if (lib$es6$promise$asap$$customSchedulerFn) {
+-          lib$es6$promise$asap$$customSchedulerFn(lib$es6$promise$asap$$flush);
+-        } else {
+-          lib$es6$promise$asap$$scheduleFlush();
+-        }
++    if(!idx) {
++      return new RedBlackTreeIterator(this, stack)
++    }
++    idx -= 1
++    if(n.right) {
++      if(idx >= n.right._count) {
++        break
+       }
++      n = n.right
++    } else {
++      break
+     }
++  }
++  return new RedBlackTreeIterator(this, [])
++}
+ 
+-    function lib$es6$promise$asap$$setScheduler(scheduleFn) {
+-      lib$es6$promise$asap$$customSchedulerFn = scheduleFn;
++proto.ge = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d <= 0) {
++      last_ptr = stack.length
+     }
+-
+-    function lib$es6$promise$asap$$setAsap(asapFn) {
+-      lib$es6$promise$asap$$asap = asapFn;
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
++}
+ 
+-    var lib$es6$promise$asap$$browserWindow = (typeof window !== 'undefined') ? window : undefined;
+-    var lib$es6$promise$asap$$browserGlobal = lib$es6$promise$asap$$browserWindow || {};
+-    var lib$es6$promise$asap$$BrowserMutationObserver = lib$es6$promise$asap$$browserGlobal.MutationObserver || lib$es6$promise$asap$$browserGlobal.WebKitMutationObserver;
+-    var lib$es6$promise$asap$$isNode = typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';
+-
+-    // test for web worker but not in IE10
+-    var lib$es6$promise$asap$$isWorker = typeof Uint8ClampedArray !== 'undefined' &&
+-      typeof importScripts !== 'undefined' &&
+-      typeof MessageChannel !== 'undefined';
+-
+-    // node
+-    function lib$es6$promise$asap$$useNextTick() {
+-      // node version 0.10.x displays a deprecation warning when nextTick is used recursively
+-      // see https://github.com/cujojs/when/issues/410 for details
+-      return function() {
+-        process.nextTick(lib$es6$promise$asap$$flush);
+-      };
++proto.gt = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d < 0) {
++      last_ptr = stack.length
+     }
+-
+-    // vertx
+-    function lib$es6$promise$asap$$useVertxTimer() {
+-      return function() {
+-        lib$es6$promise$asap$$vertxNext(lib$es6$promise$asap$$flush);
+-      };
++    if(d < 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
++}
+ 
+-    function lib$es6$promise$asap$$useMutationObserver() {
+-      var iterations = 0;
+-      var observer = new lib$es6$promise$asap$$BrowserMutationObserver(lib$es6$promise$asap$$flush);
+-      var node = document.createTextNode('');
+-      observer.observe(node, { characterData: true });
+-
+-      return function() {
+-        node.data = (iterations = ++iterations % 2);
+-      };
++proto.lt = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d > 0) {
++      last_ptr = stack.length
+     }
+-
+-    // web worker
+-    function lib$es6$promise$asap$$useMessageChannel() {
+-      var channel = new MessageChannel();
+-      channel.port1.onmessage = lib$es6$promise$asap$$flush;
+-      return function () {
+-        channel.port2.postMessage(0);
+-      };
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
++}
+ 
+-    function lib$es6$promise$asap$$useSetTimeout() {
+-      return function() {
+-        setTimeout(lib$es6$promise$asap$$flush, 1);
+-      };
++proto.le = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d >= 0) {
++      last_ptr = stack.length
+     }
+-
+-    var lib$es6$promise$asap$$queue = new Array(1000);
+-    function lib$es6$promise$asap$$flush() {
+-      for (var i = 0; i < lib$es6$promise$asap$$len; i+=2) {
+-        var callback = lib$es6$promise$asap$$queue[i];
+-        var arg = lib$es6$promise$asap$$queue[i+1];
+-
+-        callback(arg);
+-
+-        lib$es6$promise$asap$$queue[i] = undefined;
+-        lib$es6$promise$asap$$queue[i+1] = undefined;
+-      }
+-
+-      lib$es6$promise$asap$$len = 0;
++    if(d < 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
++}
+ 
+-    function lib$es6$promise$asap$$attemptVertx() {
+-      try {
+-        var r = require;
+-        var vertx = r('vertx');
+-        lib$es6$promise$asap$$vertxNext = vertx.runOnLoop || vertx.runOnContext;
+-        return lib$es6$promise$asap$$useVertxTimer();
+-      } catch(e) {
+-        return lib$es6$promise$asap$$useSetTimeout();
+-      }
+-    }
+-
+-    var lib$es6$promise$asap$$scheduleFlush;
+-    // Decide what async method to use to triggering processing of queued callbacks:
+-    if (lib$es6$promise$asap$$isNode) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useNextTick();
+-    } else if (lib$es6$promise$asap$$BrowserMutationObserver) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMutationObserver();
+-    } else if (lib$es6$promise$asap$$isWorker) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMessageChannel();
+-    } else if (lib$es6$promise$asap$$browserWindow === undefined && typeof require === 'function') {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$attemptVertx();
++//Finds the item with key if it exists
++proto.find = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d === 0) {
++      return new RedBlackTreeIterator(this, stack)
++    }
++    if(d <= 0) {
++      n = n.left
+     } else {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useSetTimeout();
++      n = n.right
+     }
+-    function lib$es6$promise$then$$then(onFulfillment, onRejection) {
+-      var parent = this;
+-      var state = parent._state;
+-
+-      if (state === lib$es6$promise$$internal$$FULFILLED && !onFulfillment || state === lib$es6$promise$$internal$$REJECTED && !onRejection) {
+-        return this;
+-      }
+-
+-      var child = new this.constructor(lib$es6$promise$$internal$$noop);
+-      var result = parent._result;
++  }
++  return new RedBlackTreeIterator(this, [])
++}
+ 
+-      if (state) {
+-        var callback = arguments[state - 1];
+-        lib$es6$promise$asap$$asap(function(){
+-          lib$es6$promise$$internal$$invokeCallback(state, child, callback, result);
+-        });
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection);
+-      }
++//Removes item with key from tree
++proto.remove = function(key) {
++  var iter = this.find(key)
++  if(iter) {
++    return iter.remove()
++  }
++  return this
++}
+ 
+-      return child;
++//Returns the item at `key`
++proto.get = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  while(n) {
++    var d = cmp(key, n.key)
++    if(d === 0) {
++      return n.value
+     }
+-    var lib$es6$promise$then$$default = lib$es6$promise$then$$then;
+-    function lib$es6$promise$promise$resolve$$resolve(object) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
+-
+-      if (object && typeof object === 'object' && object.constructor === Constructor) {
+-        return object;
+-      }
+-
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$resolve(promise, object);
+-      return promise;
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
+-    var lib$es6$promise$promise$resolve$$default = lib$es6$promise$promise$resolve$$resolve;
++  }
++  return
++}
+ 
+-    function lib$es6$promise$$internal$$noop() {}
++//Iterator for red black tree
++function RedBlackTreeIterator(tree, stack) {
++  this.tree = tree
++  this._stack = stack
++}
+ 
+-    var lib$es6$promise$$internal$$PENDING   = void 0;
+-    var lib$es6$promise$$internal$$FULFILLED = 1;
+-    var lib$es6$promise$$internal$$REJECTED  = 2;
++var iproto = RedBlackTreeIterator.prototype
+ 
+-    var lib$es6$promise$$internal$$GET_THEN_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++//Test if iterator is valid
++Object.defineProperty(iproto, "valid", {
++  get: function() {
++    return this._stack.length > 0
++  }
++})
+ 
+-    function lib$es6$promise$$internal$$selfFulfillment() {
+-      return new TypeError("You cannot resolve a promise with itself");
++//Node of the iterator
++Object.defineProperty(iproto, "node", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1]
+     }
++    return null
++  },
++  enumerable: true
++})
+ 
+-    function lib$es6$promise$$internal$$cannotReturnOwn() {
+-      return new TypeError('A promises callback cannot return that same promise.');
+-    }
++//Makes a copy of an iterator
++iproto.clone = function() {
++  return new RedBlackTreeIterator(this.tree, this._stack.slice())
++}
+ 
+-    function lib$es6$promise$$internal$$getThen(promise) {
+-      try {
+-        return promise.then;
+-      } catch(error) {
+-        lib$es6$promise$$internal$$GET_THEN_ERROR.error = error;
+-        return lib$es6$promise$$internal$$GET_THEN_ERROR;
+-      }
+-    }
++//Swaps two nodes
++function swapNode(n, v) {
++  n.key = v.key
++  n.value = v.value
++  n.left = v.left
++  n.right = v.right
++  n._color = v._color
++  n._count = v._count
++}
+ 
+-    function lib$es6$promise$$internal$$tryThen(then, value, fulfillmentHandler, rejectionHandler) {
+-      try {
+-        then.call(value, fulfillmentHandler, rejectionHandler);
+-      } catch(e) {
+-        return e;
+-      }
++//Fix up a double black node in a tree
++function fixDoubleBlack(stack) {
++  var n, p, s, z
++  for(var i=stack.length-1; i>=0; --i) {
++    n = stack[i]
++    if(i === 0) {
++      n._color = BLACK
++      return
+     }
+-
+-    function lib$es6$promise$$internal$$handleForeignThenable(promise, thenable, then) {
+-       lib$es6$promise$asap$$asap(function(promise) {
+-        var sealed = false;
+-        var error = lib$es6$promise$$internal$$tryThen(then, thenable, function(value) {
+-          if (sealed) { return; }
+-          sealed = true;
+-          if (thenable !== value) {
+-            lib$es6$promise$$internal$$resolve(promise, value);
++    //console.log("visit node:", n.key, i, stack[i].key, stack[i-1].key)
++    p = stack[i-1]
++    if(p.left === n) {
++      //console.log("left child")
++      s = p.right
++      if(s.right && s.right._color === RED) {
++        //console.log("case 1: right sibling child red")
++        s = p.right = cloneNode(s)
++        z = s.right = cloneNode(s.right)
++        p.right = s.left
++        s.left = p
++        s.right = z
++        s._color = p._color
++        n._color = BLACK
++        p._color = BLACK
++        z._color = BLACK
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = s
+           } else {
+-            lib$es6$promise$$internal$$fulfill(promise, value);
++            pp.right = s
+           }
+-        }, function(reason) {
+-          if (sealed) { return; }
+-          sealed = true;
+-
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        }, 'Settle: ' + (promise._label || ' unknown promise'));
+-
+-        if (!sealed && error) {
+-          sealed = true;
+-          lib$es6$promise$$internal$$reject(promise, error);
+         }
+-      }, promise);
+-    }
+-
+-    function lib$es6$promise$$internal$$handleOwnThenable(promise, thenable) {
+-      if (thenable._state === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, thenable._result);
+-      } else if (thenable._state === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, thenable._result);
++        stack[i-1] = s
++        return
++      } else if(s.left && s.left._color === RED) {
++        //console.log("case 1: left sibling child red")
++        s = p.right = cloneNode(s)
++        z = s.left = cloneNode(s.left)
++        p.right = z.left
++        s.left = z.right
++        z.left = p
++        z.right = s
++        z._color = p._color
++        p._color = BLACK
++        s._color = BLACK
++        n._color = BLACK
++        recount(p)
++        recount(s)
++        recount(z)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = z
++          } else {
++            pp.right = z
++          }
++        }
++        stack[i-1] = z
++        return
++      }
++      if(s._color === BLACK) {
++        if(p._color === RED) {
++          //console.log("case 2: black sibling, red parent", p.right.value)
++          p._color = BLACK
++          p.right = repaint(RED, s)
++          return
++        } else {
++          //console.log("case 2: black sibling, black parent", p.right.value)
++          p.right = repaint(RED, s)
++          continue  
++        }
+       } else {
+-        lib$es6$promise$$internal$$subscribe(thenable, undefined, function(value) {
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
++        //console.log("case 3: red sibling")
++        s = cloneNode(s)
++        p.right = s.left
++        s.left = p
++        s._color = p._color
++        p._color = RED
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = s
++          } else {
++            pp.right = s
++          }
++        }
++        stack[i-1] = s
++        stack[i] = p
++        if(i+1 < stack.length) {
++          stack[i+1] = n
++        } else {
++          stack.push(n)
++        }
++        i = i+2
++      }
++    } else {
++      //console.log("right child")
++      s = p.left
++      if(s.left && s.left._color === RED) {
++        //console.log("case 1: left sibling child red", p.value, p._color)
++        s = p.left = cloneNode(s)
++        z = s.left = cloneNode(s.left)
++        p.left = s.right
++        s.right = p
++        s.left = z
++        s._color = p._color
++        n._color = BLACK
++        p._color = BLACK
++        z._color = BLACK
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = s
++          } else {
++            pp.left = s
++          }
++        }
++        stack[i-1] = s
++        return
++      } else if(s.right && s.right._color === RED) {
++        //console.log("case 1: right sibling child red")
++        s = p.left = cloneNode(s)
++        z = s.right = cloneNode(s.right)
++        p.left = z.right
++        s.right = z.left
++        z.right = p
++        z.left = s
++        z._color = p._color
++        p._color = BLACK
++        s._color = BLACK
++        n._color = BLACK
++        recount(p)
++        recount(s)
++        recount(z)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = z
++          } else {
++            pp.left = z
++          }
++        }
++        stack[i-1] = z
++        return
+       }
+-    }
+-
+-    function lib$es6$promise$$internal$$handleMaybeThenable(promise, maybeThenable, then) {
+-      if (maybeThenable.constructor === promise.constructor &&
+-          then === lib$es6$promise$then$$default &&
+-          constructor.resolve === lib$es6$promise$promise$resolve$$default) {
+-        lib$es6$promise$$internal$$handleOwnThenable(promise, maybeThenable);
+-      } else {
+-        if (then === lib$es6$promise$$internal$$GET_THEN_ERROR) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$GET_THEN_ERROR.error);
+-        } else if (then === undefined) {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        } else if (lib$es6$promise$utils$$isFunction(then)) {
+-          lib$es6$promise$$internal$$handleForeignThenable(promise, maybeThenable, then);
++      if(s._color === BLACK) {
++        if(p._color === RED) {
++          //console.log("case 2: black sibling, red parent")
++          p._color = BLACK
++          p.left = repaint(RED, s)
++          return
+         } else {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
++          //console.log("case 2: black sibling, black parent")
++          p.left = repaint(RED, s)
++          continue  
+         }
+-      }
+-    }
+-
+-    function lib$es6$promise$$internal$$resolve(promise, value) {
+-      if (promise === value) {
+-        lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$selfFulfillment());
+-      } else if (lib$es6$promise$utils$$objectOrFunction(value)) {
+-        lib$es6$promise$$internal$$handleMaybeThenable(promise, value, lib$es6$promise$$internal$$getThen(value));
+       } else {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      }
+-    }
+-
+-    function lib$es6$promise$$internal$$publishRejection(promise) {
+-      if (promise._onerror) {
+-        promise._onerror(promise._result);
+-      }
+-
+-      lib$es6$promise$$internal$$publish(promise);
+-    }
+-
+-    function lib$es6$promise$$internal$$fulfill(promise, value) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
+-
+-      promise._result = value;
+-      promise._state = lib$es6$promise$$internal$$FULFILLED;
+-
+-      if (promise._subscribers.length !== 0) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, promise);
+-      }
+-    }
+-
+-    function lib$es6$promise$$internal$$reject(promise, reason) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
+-      promise._state = lib$es6$promise$$internal$$REJECTED;
+-      promise._result = reason;
+-
+-      lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publishRejection, promise);
+-    }
+-
+-    function lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection) {
+-      var subscribers = parent._subscribers;
+-      var length = subscribers.length;
+-
+-      parent._onerror = null;
+-
+-      subscribers[length] = child;
+-      subscribers[length + lib$es6$promise$$internal$$FULFILLED] = onFulfillment;
+-      subscribers[length + lib$es6$promise$$internal$$REJECTED]  = onRejection;
+-
+-      if (length === 0 && parent._state) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, parent);
+-      }
+-    }
+-
+-    function lib$es6$promise$$internal$$publish(promise) {
+-      var subscribers = promise._subscribers;
+-      var settled = promise._state;
+-
+-      if (subscribers.length === 0) { return; }
+-
+-      var child, callback, detail = promise._result;
+-
+-      for (var i = 0; i < subscribers.length; i += 3) {
+-        child = subscribers[i];
+-        callback = subscribers[i + settled];
+-
+-        if (child) {
+-          lib$es6$promise$$internal$$invokeCallback(settled, child, callback, detail);
+-        } else {
+-          callback(detail);
++        //console.log("case 3: red sibling")
++        s = cloneNode(s)
++        p.left = s.right
++        s.right = p
++        s._color = p._color
++        p._color = RED
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = s
++          } else {
++            pp.left = s
++          }
+         }
+-      }
+-
+-      promise._subscribers.length = 0;
+-    }
+-
+-    function lib$es6$promise$$internal$$ErrorObject() {
+-      this.error = null;
+-    }
+-
+-    var lib$es6$promise$$internal$$TRY_CATCH_ERROR = new lib$es6$promise$$internal$$ErrorObject();
+-
+-    function lib$es6$promise$$internal$$tryCatch(callback, detail) {
+-      try {
+-        return callback(detail);
+-      } catch(e) {
+-        lib$es6$promise$$internal$$TRY_CATCH_ERROR.error = e;
+-        return lib$es6$promise$$internal$$TRY_CATCH_ERROR;
+-      }
+-    }
+-
+-    function lib$es6$promise$$internal$$invokeCallback(settled, promise, callback, detail) {
+-      var hasCallback = lib$es6$promise$utils$$isFunction(callback),
+-          value, error, succeeded, failed;
+-
+-      if (hasCallback) {
+-        value = lib$es6$promise$$internal$$tryCatch(callback, detail);
+-
+-        if (value === lib$es6$promise$$internal$$TRY_CATCH_ERROR) {
+-          failed = true;
+-          error = value.error;
+-          value = null;
++        stack[i-1] = s
++        stack[i] = p
++        if(i+1 < stack.length) {
++          stack[i+1] = n
+         } else {
+-          succeeded = true;
+-        }
+-
+-        if (promise === value) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$cannotReturnOwn());
+-          return;
++          stack.push(n)
+         }
+-
+-      } else {
+-        value = detail;
+-        succeeded = true;
+-      }
+-
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) {
+-        // noop
+-      } else if (hasCallback && succeeded) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      } else if (failed) {
+-        lib$es6$promise$$internal$$reject(promise, error);
+-      } else if (settled === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      } else if (settled === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, value);
+-      }
+-    }
+-
+-    function lib$es6$promise$$internal$$initializePromise(promise, resolver) {
+-      try {
+-        resolver(function resolvePromise(value){
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function rejectPromise(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      } catch(e) {
+-        lib$es6$promise$$internal$$reject(promise, e);
++        i = i+2
+       }
+     }
++  }
++}
+ 
+-    function lib$es6$promise$promise$all$$all(entries) {
+-      return new lib$es6$promise$enumerator$$default(this, entries).promise;
++//Removes item at iterator from tree
++iproto.remove = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
++    return this.tree
++  }
++  //First copy path to node
++  var cstack = new Array(stack.length)
++  var n = stack[stack.length-1]
++  cstack[cstack.length-1] = new RBNode(n._color, n.key, n.value, n.left, n.right, n._count)
++  for(var i=stack.length-2; i>=0; --i) {
++    var n = stack[i]
++    if(n.left === stack[i+1]) {
++      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
++    } else {
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
+     }
+-    var lib$es6$promise$promise$all$$default = lib$es6$promise$promise$all$$all;
+-    function lib$es6$promise$promise$race$$race(entries) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
+-
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-
+-      if (!lib$es6$promise$utils$$isArray(entries)) {
+-        lib$es6$promise$$internal$$reject(promise, new TypeError('You must pass an array to race.'));
+-        return promise;
+-      }
+-
+-      var length = entries.length;
+-
+-      function onFulfillment(value) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      }
++  }
+ 
+-      function onRejection(reason) {
+-        lib$es6$promise$$internal$$reject(promise, reason);
+-      }
++  //Get node
++  n = cstack[cstack.length-1]
++  //console.log("start remove: ", n.value)
+ 
+-      for (var i = 0; promise._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        lib$es6$promise$$internal$$subscribe(Constructor.resolve(entries[i]), undefined, onFulfillment, onRejection);
+-      }
++  //If not leaf, then swap with previous node
++  if(n.left && n.right) {
++    //console.log("moving to leaf")
+ 
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$race$$default = lib$es6$promise$promise$race$$race;
+-    function lib$es6$promise$promise$reject$$reject(reason) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$reject(promise, reason);
+-      return promise;
++    //First walk to previous leaf
++    var split = cstack.length
++    n = n.left
++    while(n.right) {
++      cstack.push(n)
++      n = n.right
+     }
+-    var lib$es6$promise$promise$reject$$default = lib$es6$promise$promise$reject$$reject;
+-
+-    var lib$es6$promise$promise$$counter = 0;
++    //Copy path to leaf
++    var v = cstack[split-1]
++    cstack.push(new RBNode(n._color, v.key, v.value, n.left, n.right, n._count))
++    cstack[split-1].key = n.key
++    cstack[split-1].value = n.value
+ 
+-    function lib$es6$promise$promise$$needsResolver() {
+-      throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++    //Fix up stack
++    for(var i=cstack.length-2; i>=split; --i) {
++      n = cstack[i]
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
+     }
++    cstack[split-1].left = cstack[split]
++  }
++  //console.log("stack=", cstack.map(function(v) { return v.value }))
+ 
+-    function lib$es6$promise$promise$$needsNew() {
+-      throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++  //Remove leaf node
++  n = cstack[cstack.length-1]
++  if(n._color === RED) {
++    //Easy case: removing red leaf
++    //console.log("RED leaf")
++    var p = cstack[cstack.length-2]
++    if(p.left === n) {
++      p.left = null
++    } else if(p.right === n) {
++      p.right = null
+     }
+-
+-    var lib$es6$promise$promise$$default = lib$es6$promise$promise$$Promise;
+-    /**
+-      Promise objects represent the eventual result of an asynchronous operation. The
+-      primary way of interacting with a promise is through its `then` method, which
+-      registers callbacks to receive either a promise's eventual value or the reason
+-      why the promise cannot be fulfilled.
+-
+-      Terminology
+-      -----------
+-
+-      - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
+-      - `thenable` is an object or function that defines a `then` method.
+-      - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
+-      - `exception` is a value that is thrown using the throw statement.
+-      - `reason` is a value that indicates why a promise was rejected.
+-      - `settled` the final resting state of a promise, fulfilled or rejected.
+-
+-      A promise can be in one of three states: pending, fulfilled, or rejected.
+-
+-      Promises that are fulfilled have a fulfillment value and are in the fulfilled
+-      state.  Promises that are rejected have a rejection reason and are in the
+-      rejected state.  A fulfillment value is never a thenable.
+-
+-      Promises can also be said to *resolve* a value.  If this value is also a
+-      promise, then the original promise's settled state will match the value's
+-      settled state.  So a promise that *resolves* a promise that rejects will
+-      itself reject, and a promise that *resolves* a promise that fulfills will
+-      itself fulfill.
+-
+-
+-      Basic Usage:
+-      ------------
+-
+-      ```js
+-      var promise = new Promise(function(resolve, reject) {
+-        // on success
+-        resolve(value);
+-
+-        // on failure
+-        reject(reason);
+-      });
+-
+-      promise.then(function(value) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
+-
+-      Advanced Usage:
+-      ---------------
+-
+-      Promises shine when abstracting away asynchronous interactions such as
+-      `XMLHttpRequest`s.
+-
+-      ```js
+-      function getJSON(url) {
+-        return new Promise(function(resolve, reject){
+-          var xhr = new XMLHttpRequest();
+-
+-          xhr.open('GET', url);
+-          xhr.onreadystatechange = handler;
+-          xhr.responseType = 'json';
+-          xhr.setRequestHeader('Accept', 'application/json');
+-          xhr.send();
+-
+-          function handler() {
+-            if (this.readyState === this.DONE) {
+-              if (this.status === 200) {
+-                resolve(this.response);
+-              } else {
+-                reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
+-              }
+-            }
+-          };
+-        });
+-      }
+-
+-      getJSON('/posts.json').then(function(json) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
+-
+-      Unlike callbacks, promises are great composable primitives.
+-
+-      ```js
+-      Promise.all([
+-        getJSON('/posts'),
+-        getJSON('/comments')
+-      ]).then(function(values){
+-        values[0] // => postsJSON
+-        values[1] // => commentsJSON
+-
+-        return values;
+-      });
+-      ```
+-
+-      @class Promise
+-      @param {function} resolver
+-      Useful for tooling.
+-      @constructor
+-    */
+-    function lib$es6$promise$promise$$Promise(resolver) {
+-      this._id = lib$es6$promise$promise$$counter++;
+-      this._state = undefined;
+-      this._result = undefined;
+-      this._subscribers = [];
+-
+-      if (lib$es6$promise$$internal$$noop !== resolver) {
+-        typeof resolver !== 'function' && lib$es6$promise$promise$$needsResolver();
+-        this instanceof lib$es6$promise$promise$$Promise ? lib$es6$promise$$internal$$initializePromise(this, resolver) : lib$es6$promise$promise$$needsNew();
+-      }
++    cstack.pop()
++    for(var i=0; i<cstack.length; ++i) {
++      cstack[i]._count--
+     }
+-
+-    lib$es6$promise$promise$$Promise.all = lib$es6$promise$promise$all$$default;
+-    lib$es6$promise$promise$$Promise.race = lib$es6$promise$promise$race$$default;
+-    lib$es6$promise$promise$$Promise.resolve = lib$es6$promise$promise$resolve$$default;
+-    lib$es6$promise$promise$$Promise.reject = lib$es6$promise$promise$reject$$default;
+-    lib$es6$promise$promise$$Promise._setScheduler = lib$es6$promise$asap$$setScheduler;
+-    lib$es6$promise$promise$$Promise._setAsap = lib$es6$promise$asap$$setAsap;
+-    lib$es6$promise$promise$$Promise._asap = lib$es6$promise$asap$$asap;
+-
+-    lib$es6$promise$promise$$Promise.prototype = {
+-      constructor: lib$es6$promise$promise$$Promise,
+-
+-    /**
+-      The primary way of interacting with a promise is through its `then` method,
+-      which registers callbacks to receive either a promise's eventual value or the
+-      reason why the promise cannot be fulfilled.
+-
+-      ```js
+-      findUser().then(function(user){
+-        // user is available
+-      }, function(reason){
+-        // user is unavailable, and you are given the reason why
+-      });
+-      ```
+-
+-      Chaining
+-      --------
+-
+-      The return value of `then` is itself a promise.  This second, 'downstream'
+-      promise is resolved with the return value of the first promise's fulfillment
+-      or rejection handler, or rejected if the handler throws an exception.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return user.name;
+-      }, function (reason) {
+-        return 'default name';
+-      }).then(function (userName) {
+-        // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
+-        // will be `'default name'`
+-      });
+-
+-      findUser().then(function (user) {
+-        throw new Error('Found user, but still unhappy');
+-      }, function (reason) {
+-        throw new Error('`findUser` rejected and we're unhappy');
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
+-        // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
+-      });
+-      ```
+-      If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        throw new PedagogicalException('Upstream error');
+-      }).then(function (value) {
+-        // never reached
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // The `PedgagocialException` is propagated all the way down to here
+-      });
+-      ```
+-
+-      Assimilation
+-      ------------
+-
+-      Sometimes the value you want to propagate to a downstream promise can only be
+-      retrieved asynchronously. This can be achieved by returning a promise in the
+-      fulfillment or rejection handler. The downstream promise will then be pending
+-      until the returned promise is settled. This is called *assimilation*.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // The user's comments are now available
+-      });
+-      ```
+-
+-      If the assimliated promise rejects, then the downstream promise will also reject.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // If `findCommentsByAuthor` fulfills, we'll have the value here
+-      }, function (reason) {
+-        // If `findCommentsByAuthor` rejects, we'll have the reason here
+-      });
+-      ```
+-
+-      Simple Example
+-      --------------
+-
+-      Synchronous Example
+-
+-      ```javascript
+-      var result;
+-
+-      try {
+-        result = findResult();
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
+-
+-      Errback Example
+-
+-      ```js
+-      findResult(function(result, err){
+-        if (err) {
+-          // failure
+-        } else {
+-          // success
+-        }
+-      });
+-      ```
+-
+-      Promise Example;
+-
+-      ```javascript
+-      findResult().then(function(result){
+-        // success
+-      }, function(reason){
+-        // failure
+-      });
+-      ```
+-
+-      Advanced Example
+-      --------------
+-
+-      Synchronous Example
+-
+-      ```javascript
+-      var author, books;
+-
+-      try {
+-        author = findAuthor();
+-        books  = findBooksByAuthor(author);
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
+-
+-      Errback Example
+-
+-      ```js
+-
+-      function foundBooks(books) {
+-
+-      }
+-
+-      function failure(reason) {
+-
+-      }
+-
+-      findAuthor(function(author, err){
+-        if (err) {
+-          failure(err);
+-          // failure
+-        } else {
+-          try {
+-            findBoooksByAuthor(author, function(books, err) {
+-              if (err) {
+-                failure(err);
+-              } else {
+-                try {
+-                  foundBooks(books);
+-                } catch(reason) {
+-                  failure(reason);
+-                }
+-              }
+-            });
+-          } catch(error) {
+-            failure(err);
+-          }
+-          // success
+-        }
+-      });
+-      ```
+-
+-      Promise Example;
+-
+-      ```javascript
+-      findAuthor().
+-        then(findBooksByAuthor).
+-        then(function(books){
+-          // found books
+-      }).catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
+-
+-      @method then
+-      @param {Function} onFulfilled
+-      @param {Function} onRejected
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      then: lib$es6$promise$then$$default,
+-
+-    /**
+-      `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
+-      as the catch block of a try/catch statement.
+-
+-      ```js
+-      function findAuthor(){
+-        throw new Error('couldn't find that author');
++    return new RedBlackTree(this.tree._compare, cstack[0])
++  } else {
++    if(n.left || n.right) {
++      //Second easy case:  Single child black parent
++      //console.log("BLACK single child")
++      if(n.left) {
++        swapNode(n, n.left)
++      } else if(n.right) {
++        swapNode(n, n.right)
+       }
+-
+-      // synchronous
+-      try {
+-        findAuthor();
+-      } catch(reason) {
+-        // something went wrong
++      //Child must be red, so repaint it black to balance color
++      n._color = BLACK
++      for(var i=0; i<cstack.length-1; ++i) {
++        cstack[i]._count--
+       }
+-
+-      // async with promises
+-      findAuthor().catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
+-
+-      @method catch
+-      @param {Function} onRejection
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      'catch': function(onRejection) {
+-        return this.then(null, onRejection);
++      return new RedBlackTree(this.tree._compare, cstack[0])
++    } else if(cstack.length === 1) {
++      //Third easy case: root
++      //console.log("ROOT")
++      return new RedBlackTree(this.tree._compare, null)
++    } else {
++      //Hard case: Repaint n, and then do some nasty stuff
++      //console.log("BLACK leaf no children")
++      for(var i=0; i<cstack.length; ++i) {
++        cstack[i]._count--
+       }
+-    };
+-    var lib$es6$promise$enumerator$$default = lib$es6$promise$enumerator$$Enumerator;
+-    function lib$es6$promise$enumerator$$Enumerator(Constructor, input) {
+-      this._instanceConstructor = Constructor;
+-      this.promise = new Constructor(lib$es6$promise$$internal$$noop);
+-
+-      if (Array.isArray(input)) {
+-        this._input     = input;
+-        this.length     = input.length;
+-        this._remaining = input.length;
+-
+-        this._result = new Array(this.length);
+-
+-        if (this.length === 0) {
+-          lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-        } else {
+-          this.length = this.length || 0;
+-          this._enumerate();
+-          if (this._remaining === 0) {
+-            lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-          }
+-        }
++      var parent = cstack[cstack.length-2]
++      fixDoubleBlack(cstack)
++      //Fix up links
++      if(parent.left === n) {
++        parent.left = null
+       } else {
+-        lib$es6$promise$$internal$$reject(this.promise, this._validationError());
++        parent.right = null
+       }
+     }
++  }
++  return new RedBlackTree(this.tree._compare, cstack[0])
++}
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._validationError = function() {
+-      return new Error('Array Methods must be provided an Array');
+-    };
++//Returns key
++Object.defineProperty(iproto, "key", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1].key
++    }
++    return
++  },
++  enumerable: true
++})
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._enumerate = function() {
+-      var length  = this.length;
+-      var input   = this._input;
++//Returns value
++Object.defineProperty(iproto, "value", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1].value
++    }
++    return
++  },
++  enumerable: true
++})
+ 
+-      for (var i = 0; this._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        this._eachEntry(input[i], i);
+-      }
+-    };
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._eachEntry = function(entry, i) {
+-      var c = this._instanceConstructor;
+-      var resolve = c.resolve;
+-
+-      if (resolve === lib$es6$promise$promise$resolve$$default) {
+-        var then = lib$es6$promise$$internal$$getThen(entry);
+-
+-        if (then === lib$es6$promise$then$$default &&
+-            entry._state !== lib$es6$promise$$internal$$PENDING) {
+-          this._settledAt(entry._state, i, entry._result);
+-        } else if (typeof then !== 'function') {
+-          this._remaining--;
+-          this._result[i] = entry;
+-        } else if (c === lib$es6$promise$promise$$default) {
+-          var promise = new c(lib$es6$promise$$internal$$noop);
+-          lib$es6$promise$$internal$$handleMaybeThenable(promise, entry, then);
+-          this._willSettleAt(promise, i);
+-        } else {
+-          this._willSettleAt(new c(function(resolve) { resolve(entry); }), i);
+-        }
+-      } else {
+-        this._willSettleAt(resolve(entry), i);
++//Returns the position of this iterator in the sorted list
++Object.defineProperty(iproto, "index", {
++  get: function() {
++    var idx = 0
++    var stack = this._stack
++    if(stack.length === 0) {
++      var r = this.tree.root
++      if(r) {
++        return r._count
+       }
+-    };
+-
+-    lib$es6$promise$enumerator$$Enumerator.prototype._settledAt = function(state, i, value) {
+-      var promise = this.promise;
+-
+-      if (promise._state === lib$es6$promise$$internal$$PENDING) {
+-        this._remaining--;
+-
+-        if (state === lib$es6$promise$$internal$$REJECTED) {
+-          lib$es6$promise$$internal$$reject(promise, value);
+-        } else {
+-          this._result[i] = value;
++      return 0
++    } else if(stack[stack.length-1].left) {
++      idx = stack[stack.length-1].left._count
++    }
++    for(var s=stack.length-2; s>=0; --s) {
++      if(stack[s+1] === stack[s].right) {
++        ++idx
++        if(stack[s].left) {
++          idx += stack[s].left._count
+         }
+       }
+-
+-      if (this._remaining === 0) {
+-        lib$es6$promise$$internal$$fulfill(promise, this._result);
+-      }
+-    };
+-
+-    lib$es6$promise$enumerator$$Enumerator.prototype._willSettleAt = function(promise, i) {
+-      var enumerator = this;
+-
+-      lib$es6$promise$$internal$$subscribe(promise, undefined, function(value) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$FULFILLED, i, value);
+-      }, function(reason) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$REJECTED, i, reason);
+-      });
+-    };
+-    function lib$es6$promise$polyfill$$polyfill() {
+-      var local;
+-
+-      if (typeof global !== 'undefined') {
+-          local = global;
+-      } else if (typeof self !== 'undefined') {
+-          local = self;
+-      } else {
+-          try {
+-              local = Function('return this')();
+-          } catch (e) {
+-              throw new Error('polyfill failed because global object is unavailable in this environment');
+-          }
+-      }
+-
+-      var P = local.Promise;
+-
+-      if (P && Object.prototype.toString.call(P.resolve()) === '[object Promise]' && !P.cast) {
+-        return;
+-      }
+-
+-      local.Promise = lib$es6$promise$promise$$default;
+     }
+-    var lib$es6$promise$polyfill$$default = lib$es6$promise$polyfill$$polyfill;
+-
+-    var lib$es6$promise$umd$$ES6Promise = {
+-      'Promise': lib$es6$promise$promise$$default,
+-      'polyfill': lib$es6$promise$polyfill$$default
+-    };
++    return idx
++  },
++  enumerable: true
++})
+ 
+-    /* global define:true module:true window: true */
+-    if (typeof define === 'function' && define['amd']) {
+-      define(function() { return lib$es6$promise$umd$$ES6Promise; });
+-    } else if (typeof module !== 'undefined' && module['exports']) {
+-      module['exports'] = lib$es6$promise$umd$$ES6Promise;
+-    } else if (typeof this !== 'undefined') {
+-      this['ES6Promise'] = lib$es6$promise$umd$$ES6Promise;
++//Advances iterator to next element in list
++iproto.next = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
++    return
++  }
++  var n = stack[stack.length-1]
++  if(n.right) {
++    n = n.right
++    while(n) {
++      stack.push(n)
++      n = n.left
+     }
+-
+-    lib$es6$promise$polyfill$$default();
+-}).call(this);
+-
+-
+-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"_process":44}],104:[function(require,module,exports){
+-/**
+- * inspired by is-number <https://github.com/jonschlinkert/is-number>
+- * but significantly simplified and sped up by ignoring number and string constructors
+- * ie these return false:
+- *   new Number(1)
+- *   new String('1')
+- */
+-
+-'use strict';
+-
+-/**
+- * Is this string all whitespace?
+- * This solution kind of makes my brain hurt, but it's significantly faster
+- * than !str.trim() or any other solution I could find.
+- *
+- * whitespace codes from: http://en.wikipedia.org/wiki/Whitespace_character
+- * and verified with:
+- *
+- *  for(var i = 0; i < 65536; i++) {
+- *      var s = String.fromCharCode(i);
+- *      if(+s===0 && !s.trim()) console.log(i, s);
+- *  }
+- *
+- * which counts a couple of these as *not* whitespace, but finds nothing else
+- * that *is* whitespace. Note that charCodeAt stops at 16 bits, but it appears
+- * that there are no whitespace characters above this, and code points above
+- * this do not map onto white space characters.
+- */
+-function allBlankCharCodes(str){
+-    var l = str.length,
+-        a;
+-    for(var i = 0; i < l; i++) {
+-        a = str.charCodeAt(i);
+-        if((a < 9 || a > 13) && (a !== 32) && (a !== 133) && (a !== 160) &&
+-            (a !== 5760) && (a !== 6158) && (a < 8192 || a > 8205) &&
+-            (a !== 8232) && (a !== 8233) && (a !== 8239) && (a !== 8287) &&
+-            (a !== 8288) && (a !== 12288) && (a !== 65279)) {
+-                return false;
+-        }
++  } else {
++    stack.pop()
++    while(stack.length > 0 && stack[stack.length-1].right === n) {
++      n = stack[stack.length-1]
++      stack.pop()
+     }
+-    return true;
++  }
+ }
+ 
+-module.exports = function(n) {
+-    var type = typeof n;
+-    if(type === 'string') {
+-        var original = n;
+-        n = +n;
+-        // whitespace strings cast to zero - filter them out
+-        if(n===0 && allBlankCharCodes(original)) return false;
++//Checks if iterator is at end of tree
++Object.defineProperty(iproto, "hasNext", {
++  get: function() {
++    var stack = this._stack
++    if(stack.length === 0) {
++      return false
+     }
+-    else if(type !== 'number') return false;
+-
+-    return n - n < 1;
+-};
+-
+-},{}],105:[function(require,module,exports){
+-"use strict"
+-
+-var pool = require("typedarray-pool")
+-var ops = require("ndarray-ops")
+-var ndarray = require("ndarray")
+-
+-var SUPPORTED_TYPES = [
+-  "uint8",
+-  "uint8_clamped",
+-  "uint16",
+-  "uint32",
+-  "int8",
+-  "int16",
+-  "int32",
+-  "float32" ]
+-
+-function GLBuffer(gl, type, handle, length, usage) {
+-  this.gl = gl
+-  this.type = type
+-  this.handle = handle
+-  this.length = length
+-  this.usage = usage
+-}
+-
+-var proto = GLBuffer.prototype
+-
+-proto.bind = function() {
+-  this.gl.bindBuffer(this.type, this.handle)
+-}
+-
+-proto.unbind = function() {
+-  this.gl.bindBuffer(this.type, null)
+-}
+-
+-proto.dispose = function() {
+-  this.gl.deleteBuffer(this.handle)
+-}
+-
+-function updateTypeArray(gl, type, len, usage, data, offset) {
+-  var dataLen = data.length * data.BYTES_PER_ELEMENT
+-  if(offset < 0) {
+-    gl.bufferData(type, data, usage)
+-    return dataLen
+-  }
+-  if(dataLen + offset > len) {
+-    throw new Error("gl-buffer: If resizing buffer, must not specify offset")
++    if(stack[stack.length-1].right) {
++      return true
++    }
++    for(var s=stack.length-1; s>0; --s) {
++      if(stack[s-1].left === stack[s]) {
++        return true
++      }
++    }
++    return false
+   }
+-  gl.bufferSubData(type, offset, data)
+-  return len
+-}
++})
+ 
+-function makeScratchTypeArray(array, dtype) {
+-  var res = pool.malloc(array.length, dtype)
+-  var n = array.length
+-  for(var i=0; i<n; ++i) {
+-    res[i] = array[i]
++//Update value
++iproto.update = function(value) {
++  var stack = this._stack
++  if(stack.length === 0) {
++    throw new Error("Can't update empty node!")
+   }
+-  return res
+-}
+-
+-function isPacked(shape, stride) {
+-  var n = 1
+-  for(var i=stride.length-1; i>=0; --i) {
+-    if(stride[i] !== n) {
+-      return false
++  var cstack = new Array(stack.length)
++  var n = stack[stack.length-1]
++  cstack[cstack.length-1] = new RBNode(n._color, n.key, value, n.left, n.right, n._count)
++  for(var i=stack.length-2; i>=0; --i) {
++    n = stack[i]
++    if(n.left === stack[i+1]) {
++      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
++    } else {
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
+     }
+-    n *= shape[i]
+   }
+-  return true
++  return new RedBlackTree(this.tree._compare, cstack[0])
+ }
+ 
+-proto.update = function(array, offset) {
+-  if(typeof offset !== "number") {
+-    offset = -1
++//Moves iterator backward one element
++iproto.prev = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
++    return
+   }
+-  this.bind()
+-  if(typeof array === "object" && typeof array.shape !== "undefined") { //ndarray
+-    var dtype = array.dtype
+-    if(SUPPORTED_TYPES.indexOf(dtype) < 0) {
+-      dtype = "float32"
+-    }
+-    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
+-      var ext = gl.getExtension('OES_element_index_uint')
+-      if(ext && dtype !== "uint16") {
+-        dtype = "uint32"
+-      } else {
+-        dtype = "uint16"
+-      }
+-    }
+-    if(dtype === array.dtype && isPacked(array.shape, array.stride)) {
+-      if(array.offset === 0 && array.data.length === array.shape[0]) {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data, offset)
+-      } else {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data.subarray(array.offset, array.shape[0]), offset)
+-      }
+-    } else {
+-      var tmp = pool.malloc(array.size, dtype)
+-      var ndt = ndarray(tmp, array.shape)
+-      ops.assign(ndt, array)
+-      if(offset < 0) {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp, offset)
+-      } else {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp.subarray(0, array.size), offset)
+-      }
+-      pool.free(tmp)
++  var n = stack[stack.length-1]
++  if(n.left) {
++    n = n.left
++    while(n) {
++      stack.push(n)
++      n = n.right
+     }
+-  } else if(Array.isArray(array)) { //Vanilla array
+-    var t
+-    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
+-      t = makeScratchTypeArray(array, "uint16")
+-    } else {
+-      t = makeScratchTypeArray(array, "float32")
++  } else {
++    stack.pop()
++    while(stack.length > 0 && stack[stack.length-1].left === n) {
++      n = stack[stack.length-1]
++      stack.pop()
+     }
+-    if(offset < 0) {
+-      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t, offset)
+-    } else {
+-      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t.subarray(0, array.length), offset)
++  }
++}
++
++//Checks if iterator is at start of tree
++Object.defineProperty(iproto, "hasPrev", {
++  get: function() {
++    var stack = this._stack
++    if(stack.length === 0) {
++      return false
+     }
+-    pool.free(t)
+-  } else if(typeof array === "object" && typeof array.length === "number") { //Typed array
+-    this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array, offset)
+-  } else if(typeof array === "number" || array === undefined) { //Number/default
+-    if(offset >= 0) {
+-      throw new Error("gl-buffer: Cannot specify offset when resizing buffer")
++    if(stack[stack.length-1].left) {
++      return true
+     }
+-    array = array | 0
+-    if(array <= 0) {
+-      array = 1
++    for(var s=stack.length-1; s>0; --s) {
++      if(stack[s-1].right === stack[s]) {
++        return true
++      }
+     }
+-    this.gl.bufferData(this.type, array|0, this.usage)
+-    this.length = array
+-  } else { //Error, case should not happen
+-    throw new Error("gl-buffer: Invalid data type")
++    return false
+   }
+-}
++})
+ 
+-function createBuffer(gl, data, type, usage) {
+-  type = type || gl.ARRAY_BUFFER
+-  usage = usage || gl.DYNAMIC_DRAW
+-  if(type !== gl.ARRAY_BUFFER && type !== gl.ELEMENT_ARRAY_BUFFER) {
+-    throw new Error("gl-buffer: Invalid type for webgl buffer, must be either gl.ARRAY_BUFFER or gl.ELEMENT_ARRAY_BUFFER")
++//Default comparison function
++function defaultCompare(a, b) {
++  if(a < b) {
++    return -1
+   }
+-  if(usage !== gl.DYNAMIC_DRAW && usage !== gl.STATIC_DRAW && usage !== gl.STREAM_DRAW) {
+-    throw new Error("gl-buffer: Invalid usage for buffer, must be either gl.DYNAMIC_DRAW, gl.STATIC_DRAW or gl.STREAM_DRAW")
++  if(a > b) {
++    return 1
+   }
+-  var handle = gl.createBuffer()
+-  var result = new GLBuffer(gl, type, handle, 0, usage)
+-  result.update(data)
+-  return result
++  return 0
+ }
+ 
+-module.exports = createBuffer
+-
+-},{"ndarray":219,"ndarray-ops":218,"typedarray-pool":242}],106:[function(require,module,exports){
+-'use strict'
++//Build a tree
++function createRBTree(compare) {
++  return new RedBlackTree(compare || defaultCompare, null)
++}
++},{}],85:[function(require,module,exports){
++// transliterated from the python snippet here:
++// http://en.wikipedia.org/wiki/Lanczos_approximation
+ 
+-module.exports = createErrorBars
++var g = 7;
++var p = [
++    0.99999999999980993,
++    676.5203681218851,
++    -1259.1392167224028,
++    771.32342877765313,
++    -176.61502916214059,
++    12.507343278686905,
++    -0.13857109526572012,
++    9.9843695780195716e-6,
++    1.5056327351493116e-7
++];
+ 
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var createShader  = require('./shaders/index')
++var g_ln = 607/128;
++var p_ln = [
++    0.99999999999999709182,
++    57.156235665862923517,
++    -59.597960355475491248,
++    14.136097974741747174,
++    -0.49191381609762019978,
++    0.33994649984811888699e-4,
++    0.46523628927048575665e-4,
++    -0.98374475304879564677e-4,
++    0.15808870322491248884e-3,
++    -0.21026444172410488319e-3,
++    0.21743961811521264320e-3,
++    -0.16431810653676389022e-3,
++    0.84418223983852743293e-4,
++    -0.26190838401581408670e-4,
++    0.36899182659531622704e-5
++];
+ 
+-var IDENTITY = [1,0,0,0,
+-                0,1,0,0,
+-                0,0,1,0,
+-                0,0,0,1]
++// Spouge approximation (suitable for large arguments)
++function lngamma(z) {
+ 
+-function ErrorBars(gl, buffer, vao, shader) {
+-  this.gl           = gl
+-  this.shader       = shader
+-  this.buffer       = buffer
+-  this.vao          = vao
+-  this.pixelRatio   = 1
+-  this.bounds       = [[ Infinity, Infinity, Infinity], [-Infinity,-Infinity,-Infinity]]
+-  this.clipBounds   = [[-Infinity,-Infinity,-Infinity], [ Infinity, Infinity, Infinity]]
+-  this.lineWidth    = [1,1,1]
+-  this.capSize      = [10,10,10]
+-  this.lineCount    = [0,0,0]
+-  this.lineOffset   = [0,0,0]
+-  this.opacity      = 1
++    if(z < 0) return Number('0/0');
++    var x = p_ln[0];
++    for(var i = p_ln.length - 1; i > 0; --i) x += p_ln[i] / (z + i);
++    var t = z + g_ln + 0.5;
++    return .5*Math.log(2*Math.PI)+(z+.5)*Math.log(t)-t+Math.log(x)-Math.log(z);
+ }
+ 
+-var proto = ErrorBars.prototype
+-
+-proto.isOpaque = function() {
+-  return this.opacity >= 1
+-}
++module.exports = function gamma (z) {
++    if (z < 0.5) {
++        return Math.PI / (Math.sin(Math.PI * z) * gamma(1 - z));
++    }
++    else if(z > 100) return Math.exp(lngamma(z));
++    else {
++        z -= 1;
++        var x = p[0];
++        for (var i = 1; i < g + 2; i++) {
++            x += p[i] / (z + i);
++        }
++        var t = z + g + 0.5;
+ 
+-proto.isTransparent = function() {
+-  return this.opacity < 1
+-}
++        return Math.sqrt(2 * Math.PI)
++            * Math.pow(t, z + 0.5)
++            * Math.exp(-t)
++            * x
++        ;
++    }
++};
+ 
+-proto.drawTransparent = proto.draw = function(cameraParams) {
+-  var gl = this.gl
+-  var uniforms        = this.shader.uniforms
++module.exports.log = lngamma;
+ 
+-  this.shader.bind()
+-  var view       = uniforms.view       = cameraParams.view       || IDENTITY
+-  var projection = uniforms.projection = cameraParams.projection || IDENTITY
+-  uniforms.model      = cameraParams.model      || IDENTITY
+-  uniforms.clipBounds = this.clipBounds
+-  uniforms.opacity    = this.opacity
++},{}],86:[function(require,module,exports){
++'use strict'
+ 
++module.exports = createAxes
+ 
+-  var cx = view[12]
+-  var cy = view[13]
+-  var cz = view[14]
+-  var cw = view[15]
+-  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
++var createText        = require('./lib/text.js')
++var createLines       = require('./lib/lines.js')
++var createBackground  = require('./lib/background.js')
++var getCubeProperties = require('./lib/cube.js')
++var Ticks             = require('./lib/ticks.js')
+ 
++var identity = new Float32Array([
++  1, 0, 0, 0,
++  0, 1, 0, 0,
++  0, 0, 1, 0,
++  0, 0, 0, 1])
+ 
+-  this.vao.bind()
+-  for(var i=0; i<3; ++i) {
+-    gl.lineWidth(this.lineWidth[i])
+-    uniforms.capSize = this.capSize[i] * pixelScaleF
+-    gl.drawArrays(gl.LINES, this.lineOffset[i], this.lineCount[i])
+-  }
+-  this.vao.unbind()
++function copyVec3(a, b) {
++  a[0] = b[0]
++  a[1] = b[1]
++  a[2] = b[2]
++  return a
+ }
+ 
+-function updateBounds(bounds, point) {
+-  for(var i=0; i<3; ++i) {
+-    bounds[0][i] = Math.min(bounds[0][i], point[i])
+-    bounds[1][i] = Math.max(bounds[1][i], point[i])
+-  }
+-}
++function Axes(gl) {
++  this.gl             = gl
+ 
+-var FACE_TABLE = (function(){
+-  var table = new Array(3)
+-  for(var d=0; d<3; ++d) {
+-    var row = []
+-    for(var j=1; j<=2; ++j) {
+-      for(var s=-1; s<=1; s+=2) {
+-        var u = (j+d) % 3
+-        var y = [0,0,0]
+-        y[u] = s
+-        row.push(y)
+-      }
+-    }
+-    table[d] = row
+-  }
+-  return table
+-})()
++  this.pixelRatio     = 1
++
++  this.bounds         = [ [-10, -10, -10],
++                          [ 10,  10,  10] ]
++  this.ticks          = [ [], [], [] ]
++  this.autoTicks      = true
++  this.tickSpacing    = [ 1, 1, 1 ]
+ 
++  this.tickEnable     = [ true, true, true ]
++  this.tickFont       = [ 'sans-serif', 'sans-serif', 'sans-serif' ]
++  this.tickSize       = [ 12, 12, 12 ]
++  this.tickAngle      = [ 0, 0, 0 ]
++  this.tickColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++  this.tickPad        = [ 10, 10, 10 ]
+ 
+-function emitFace(verts, x, c, d) {
+-  var offsets = FACE_TABLE[d]
+-  for(var i=0; i<offsets.length; ++i) {
+-    var o = offsets[i]
+-    verts.push(x[0], x[1], x[2],
+-               c[0], c[1], c[2], c[3],
+-               o[0], o[1], o[2])
++  this.lastCubeProps  = {
++    cubeEdges: [0,0,0],
++    axis:      [0,0,0]
+   }
+-  return offsets.length
+-}
+ 
+-proto.update = function(options) {
+-  options = options || {}
++  this.labels         = [ 'x', 'y', 'z' ]
++  this.labelEnable    = [ true, true, true ]
++  this.labelFont      = 'sans-serif'
++  this.labelSize      = [ 20, 20, 20 ]
++  this.labelAngle     = [ 0, 0, 0 ]
++  this.labelColor     = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++  this.labelPad       = [ 10, 10, 10 ]
+ 
+-  if('lineWidth' in options) {
+-    this.lineWidth = options.lineWidth
+-    if(!Array.isArray(this.lineWidth)) {
+-      this.lineWidth = [this.lineWidth, this.lineWidth, this.lineWidth]
+-    }
+-  }
+-  if('capSize' in options) {
+-    this.capSize = options.capSize
+-    if(!Array.isArray(this.capSize)) {
+-      this.capSize = [this.capSize, this.capSize, this.capSize]
+-    }
+-  }
+-  if('opacity' in options) {
+-    this.opacity = options.opacity
+-  }
++  this.lineEnable     = [ true, true, true ]
++  this.lineMirror     = [ false, false, false ]
++  this.lineWidth      = [ 1, 1, 1 ]
++  this.lineColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+ 
+-  var color    = options.color || [[0,0,0],[0,0,0],[0,0,0]]
+-  var position = options.position
+-  var error    = options.error
+-  if(!Array.isArray(color[0])) {
+-    color = [color,color,color]
+-  }
++  this.lineTickEnable = [ true, true, true ]
++  this.lineTickMirror = [ false, false, false ]
++  this.lineTickLength = [ 0, 0, 0 ]
++  this.lineTickWidth  = [ 1, 1, 1 ]
++  this.lineTickColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+ 
+-  if(position && error) {
++  this.gridEnable     = [ true, true, true ]
++  this.gridWidth      = [ 1, 1, 1 ]
++  this.gridColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+ 
+-    var verts       = []
+-    var n           = position.length
+-    var vertexCount = 0
+-    this.bounds     = [[ Infinity, Infinity, Infinity],
+-                       [-Infinity,-Infinity,-Infinity]]
+-    this.lineCount  = [0,0,0]
++  this.zeroEnable     = [ true, true, true ]
++  this.zeroLineColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++  this.zeroLineWidth  = [ 2, 2, 2 ]
+ 
+-    //Build geometry for lines
+-    for(var j=0; j<3; ++j) {
+-      this.lineOffset[j] = vertexCount
++  this.backgroundEnable = [ false, false, false ]
++  this.backgroundColor  = [ [0.8, 0.8, 0.8, 0.5],
++                            [0.8, 0.8, 0.8, 0.5],
++                            [0.8, 0.8, 0.8, 0.5] ]
+ 
+-i_loop:
+-      for(var i=0; i<n; ++i) {
+-        var p = position[i]
++  this._firstInit = true
++  this._text  = null
++  this._lines = null
++  this._background = createBackground(gl)
++}
+ 
+-        for(var k=0; k<3; ++k) {
+-          if(isNaN(p[k]) || !isFinite(p[k])) {
+-            continue i_loop
+-          }
+-        }
++var proto = Axes.prototype
+ 
+-        var e = error[i]
+-        var c = color[j]
+-        if(Array.isArray(c[0])) {
+-          c = color[i]
+-        }
+-        if(c.length === 3) {
+-          c = [c[0], c[1], c[2], 1]
+-        }
+-        if(isNaN(e[0][j]) || isNaN(e[1][j])) {
+-          continue
+-        }
+-        if(e[0][j] < 0) {
+-          var x = p.slice()
+-          x[j] += e[0][j]
+-          verts.push(p[0], p[1], p[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0,
+-                     x[0], x[1], x[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0)
+-          updateBounds(this.bounds, x)
+-          vertexCount += 2 + emitFace(verts, x, c, j)
+-        }
+-        if(e[1][j] > 0) {
+-          var x = p.slice()
+-          x[j] += e[1][j]
+-          verts.push(p[0], p[1], p[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0,
+-                     x[0], x[1], x[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0)
+-          updateBounds(this.bounds, x)
+-          vertexCount += 2 + emitFace(verts, x, c, j)
++proto.update = function(options) {
++  options = options || {}
++
++  //Option parsing helper functions
++  function parseOption(nest, cons, name) {
++    if(name in options) {
++      var opt = options[name]
++      var prev = this[name]
++      var next
++      if(nest ? (Array.isArray(opt) && Array.isArray(opt[0])) :
++                 Array.isArray(opt) ) {
++        this[name] = next = [ cons(opt[0]), cons(opt[1]), cons(opt[2]) ]
++      } else {
++        this[name] = next = [ cons(opt), cons(opt), cons(opt) ]
++      }
++      for(var i=0; i<3; ++i) {
++        if(next[i] !== prev[i]) {
++          return true
+         }
+       }
+-      this.lineCount[j] = vertexCount - this.lineOffset[j]
+     }
+-    this.buffer.update(verts)
++    return false
+   }
+-}
+ 
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.buffer.dispose()
+-  this.vao.dispose()
+-}
++  var NUMBER  = parseOption.bind(this, false, Number)
++  var BOOLEAN = parseOption.bind(this, false, Boolean)
++  var STRING  = parseOption.bind(this, false, String)
++  var COLOR   = parseOption.bind(this, true, function(v) {
++    if(Array.isArray(v)) {
++      if(v.length === 3) {
++        return [ +v[0], +v[1], +v[2], 1.0 ]
++      } else if(v.length === 4) {
++        return [ +v[0], +v[1], +v[2], +v[3] ]
++      }
++    }
++    return [ 0, 0, 0, 1 ]
++  })
+ 
+-function createErrorBars(options) {
+-  var gl = options.gl
+-  var buffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-      {
+-        buffer: buffer,
+-        type:   gl.FLOAT,
+-        size:   3,
+-        offset: 0,
+-        stride: 40
+-      },
+-      {
+-        buffer: buffer,
+-        type:   gl.FLOAT,
+-        size:   4,
+-        offset: 12,
+-        stride: 40
+-      },
+-      {
+-        buffer: buffer,
+-        type:   gl.FLOAT,
+-        size:   3,
+-        offset: 28,
+-        stride: 40
++  //Tick marks and bounds
++  var nextTicks
++  var ticksUpdate   = false
++  var boundsChanged = false
++  if('bounds' in options) {
++    var bounds = options.bounds
++i_loop:
++    for(var i=0; i<2; ++i) {
++      for(var j=0; j<3; ++j) {
++        if(bounds[i][j] !== this.bounds[i][j]) {
++          boundsChanged = true
++        }
++        this.bounds[i][j] = bounds[i][j]
+       }
+-    ])
++    }
++  }
++  if('ticks' in options) {
++    nextTicks      = options.ticks
++    ticksUpdate    = true
++    this.autoTicks = false
++    for(var i=0; i<3; ++i) {
++      this.tickSpacing[i] = 0.0
++    }
++  } else if(NUMBER('tickSpacing')) {
++    this.autoTicks  = true
++    boundsChanged   = true
++  }
+ 
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location    = 1
+-  shader.attributes.offset.location   = 2
++  if(this._firstInit) {
++    if(!('ticks' in options || 'tickSpacing' in options)) {
++      this.autoTicks = true
++    }
+ 
+-  var result = new ErrorBars(gl, buffer, vao, shader)
+-  result.update(options)
+-  return result
+-}
++    //Force tick recomputation on first update
++    boundsChanged   = true
++    ticksUpdate     = true
++    this._firstInit = false
++  }
+ 
+-},{"./shaders/index":107,"gl-buffer":105,"gl-vao":192}],107:[function(require,module,exports){
+-'use strict'
++  if(boundsChanged && this.autoTicks) {
++    nextTicks = Ticks.create(this.bounds, this.tickSpacing)
++    ticksUpdate = true
++  }
+ 
++  //Compare next ticks to previous ticks, only update if needed
++  if(ticksUpdate) {
++    for(var i=0; i<3; ++i) {
++      nextTicks[i].sort(function(a,b) {
++        return a.x-b.x
++      })
++    }
++    if(Ticks.equal(nextTicks, this.ticks)) {
++      ticksUpdate = false
++    } else {
++      this.ticks = nextTicks
++    }
++  }
+ 
+-var createShader = require('gl-shader')
++  //Parse tick properties
++  BOOLEAN('tickEnable')
++  if(STRING('tickFont')) {
++    ticksUpdate = true  //If font changes, must rebuild vbo
++  }
++  NUMBER('tickSize')
++  NUMBER('tickAngle')
++  NUMBER('tickPad')
++  COLOR('tickColor')
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, offset;\nattribute vec4 color;\nuniform mat4 model, view, projection;\nuniform float capSize;\nvarying vec4 fragColor;\nvarying vec3 fragPosition;\n\nvoid main() {\n  vec4 worldPosition  = model * vec4(position, 1.0);\n  worldPosition       = (worldPosition / worldPosition.w) + vec4(capSize * offset, 0.0);\n  gl_Position         = projection * view * worldPosition;\n  fragColor           = color;\n  fragPosition        = position;\n}"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\nuniform vec3 clipBounds[2];\nuniform float opacity;\nvarying vec3 fragPosition;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(fragPosition, clipBounds[0])) || any(greaterThan(fragPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = opacity * fragColor;\n}"
++  //Axis labels
++  var labelUpdate = STRING('labels')
++  if(STRING('labelFont')) {
++    labelUpdate = true
++  }
++  BOOLEAN('labelEnable')
++  NUMBER('labelSize')
++  NUMBER('labelPad')
++  COLOR('labelColor')
+ 
+-module.exports = function(gl) {
+-  return createShader(gl, vertSrc, fragSrc, null, [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'offset', type: 'vec3'},
+-    {name: 'color', type: 'vec4'}
+-  ])
+-}
++  //Axis lines
++  BOOLEAN('lineEnable')
++  BOOLEAN('lineMirror')
++  NUMBER('lineWidth')
++  COLOR('lineColor')
+ 
+-},{"gl-shader":164}],108:[function(require,module,exports){
+-'use strict'
++  //Axis line ticks
++  BOOLEAN('lineTickEnable')
++  BOOLEAN('lineTickMirror')
++  NUMBER('lineTickLength')
++  NUMBER('lineTickWidth')
++  COLOR('lineTickColor')
+ 
+-var createTexture = require('gl-texture2d')
++  //Grid lines
++  BOOLEAN('gridEnable')
++  NUMBER('gridWidth')
++  COLOR('gridColor')
+ 
+-module.exports = createFBO
++  //Zero line
++  BOOLEAN('zeroEnable')
++  COLOR('zeroLineColor')
++  NUMBER('zeroLineWidth')
+ 
+-var colorAttachmentArrays = null
+-var FRAMEBUFFER_UNSUPPORTED
+-var FRAMEBUFFER_INCOMPLETE_ATTACHMENT
+-var FRAMEBUFFER_INCOMPLETE_DIMENSIONS
+-var FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
++  //Background
++  BOOLEAN('backgroundEnable')
++  COLOR('backgroundColor')
+ 
+-function saveFBOState(gl) {
+-  var fbo = gl.getParameter(gl.FRAMEBUFFER_BINDING)
+-  var rbo = gl.getParameter(gl.RENDERBUFFER_BINDING)
+-  var tex = gl.getParameter(gl.TEXTURE_BINDING_2D)
+-  return [fbo, rbo, tex]
++  //Update text if necessary
++  if(!this._text) {
++    this._text = createText(
++      this.gl,
++      this.bounds,
++      this.labels,
++      this.labelFont,
++      this.ticks,
++      this.tickFont)
++  } else if(this._text && (labelUpdate || ticksUpdate)) {
++    this._text.update(
++      this.bounds,
++      this.labels,
++      this.labelFont,
++      this.ticks,
++      this.tickFont)
++  }
++
++  //Update lines if necessary
++  if(this._lines && ticksUpdate) {
++    this._lines.dispose()
++    this._lines = null
++  }
++  if(!this._lines) {
++    this._lines = createLines(this.gl, this.bounds, this.ticks)
++  }
+ }
+ 
+-function restoreFBOState(gl, data) {
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, data[0])
+-  gl.bindRenderbuffer(gl.RENDERBUFFER, data[1])
+-  gl.bindTexture(gl.TEXTURE_2D, data[2])
++function OffsetInfo() {
++  this.primalOffset = [0,0,0]
++  this.primalMinor  = [0,0,0]
++  this.mirrorOffset = [0,0,0]
++  this.mirrorMinor  = [0,0,0]
+ }
+ 
+-function lazyInitColorAttachments(gl, ext) {
+-  var maxColorAttachments = gl.getParameter(ext.MAX_COLOR_ATTACHMENTS_WEBGL)
+-  colorAttachmentArrays = new Array(maxColorAttachments + 1)
+-  for(var i=0; i<=maxColorAttachments; ++i) {
+-    var x = new Array(maxColorAttachments)
+-    for(var j=0; j<i; ++j) {
+-      x[j] = gl.COLOR_ATTACHMENT0 + j
++var LINE_OFFSET = [ new OffsetInfo(), new OffsetInfo(), new OffsetInfo() ]
++
++function computeLineOffset(result, i, bounds, cubeEdges, cubeAxis) {
++  var primalOffset = result.primalOffset
++  var primalMinor  = result.primalMinor
++  var dualOffset   = result.mirrorOffset
++  var dualMinor    = result.mirrorMinor
++  var e = cubeEdges[i]
++
++  //Calculate offsets
++  for(var j=0; j<3; ++j) {
++    if(i === j) {
++      continue
+     }
+-    for(var j=i; j<maxColorAttachments; ++j) {
+-      x[j] = gl.NONE
++    var a = primalOffset,
++        b = dualOffset,
++        c = primalMinor,
++        d = dualMinor
++    if(e & (1<<j)) {
++      a = dualOffset
++      b = primalOffset
++      c = dualMinor
++      d = primalMinor
++    }
++    a[j] = bounds[0][j]
++    b[j] = bounds[1][j]
++    if(cubeAxis[j] > 0) {
++      c[j] = -1
++      d[j] = 0
++    } else {
++      c[j] = 0
++      d[j] = +1
+     }
+-    colorAttachmentArrays[i] = x
+   }
+ }
+ 
+-//Throw an appropriate error
+-function throwFBOError(status) {
+-  switch(status){
+-    case FRAMEBUFFER_UNSUPPORTED:
+-      throw new Error('gl-fbo: Framebuffer unsupported')
+-    case FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
+-      throw new Error('gl-fbo: Framebuffer incomplete attachment')
+-    case FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
+-      throw new Error('gl-fbo: Framebuffer incomplete dimensions')
+-    case FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
+-      throw new Error('gl-fbo: Framebuffer incomplete missing attachment')
+-    default:
+-      throw new Error('gl-fbo: Framebuffer failed for unspecified reason')
+-  }
++var CUBE_ENABLE = [0,0,0]
++var DEFAULT_PARAMS = {
++  model:      identity,
++  view:       identity,
++  projection: identity
+ }
+ 
+-//Initialize a texture object
+-function initTexture(gl, width, height, type, format, attachment) {
+-  if(!type) {
+-    return null
+-  }
+-  var result = createTexture(gl, width, height, format, type)
+-  result.magFilter = gl.NEAREST
+-  result.minFilter = gl.NEAREST
+-  result.mipSamples = 1
+-  result.bind()
+-  gl.framebufferTexture2D(gl.FRAMEBUFFER, attachment, gl.TEXTURE_2D, result.handle, 0)
+-  return result
++proto.isOpaque = function() {
++  return true
+ }
+ 
+-//Initialize a render buffer object
+-function initRenderBuffer(gl, width, height, component, attachment) {
+-  var result = gl.createRenderbuffer()
+-  gl.bindRenderbuffer(gl.RENDERBUFFER, result)
+-  gl.renderbufferStorage(gl.RENDERBUFFER, component, width, height)
+-  gl.framebufferRenderbuffer(gl.FRAMEBUFFER, attachment, gl.RENDERBUFFER, result)
+-  return result
++proto.isTransparent = function() {
++  return false
+ }
+ 
+-//Rebuild the frame buffer
+-function rebuildFBO(fbo) {
++proto.drawTransparent = function(params) {}
+ 
+-  //Save FBO state
+-  var state = saveFBOState(fbo.gl)
+ 
+-  var gl = fbo.gl
+-  var handle = fbo.handle = gl.createFramebuffer()
+-  var width = fbo._shape[0]
+-  var height = fbo._shape[1]
+-  var numColors = fbo.color.length
+-  var ext = fbo._ext
+-  var useStencil = fbo._useStencil
+-  var useDepth = fbo._useDepth
+-  var colorType = fbo._colorType
++var PRIMAL_MINOR  = [0,0,0]
++var MIRROR_MINOR  = [0,0,0]
++var PRIMAL_OFFSET = [0,0,0]
+ 
+-  //Bind the fbo
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, handle)
++proto.draw = function(params) {
++  params = params || DEFAULT_PARAMS
+ 
+-  //Allocate color buffers
+-  for(var i=0; i<numColors; ++i) {
+-    fbo.color[i] = initTexture(gl, width, height, colorType, gl.RGBA, gl.COLOR_ATTACHMENT0 + i)
++  var gl = this.gl
++
++  //Geometry for camera and axes
++  var model       = params.model || identity
++  var view        = params.view || identity
++  var projection  = params.projection || identity
++  var bounds      = this.bounds
++
++  //Unpack axis info
++  var cubeParams  = getCubeProperties(model, view, projection, bounds)
++  var cubeEdges   = cubeParams.cubeEdges
++  var cubeAxis    = cubeParams.axis
++
++  var cx = view[12]
++  var cy = view[13]
++  var cz = view[14]
++  var cw = view[15]
++
++  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
++
++  for(var i=0; i<3; ++i) {
++    this.lastCubeProps.cubeEdges[i] = cubeEdges[i]
++    this.lastCubeProps.axis[i] = cubeAxis[i]
+   }
+-  if(numColors === 0) {
+-    fbo._color_rb = initRenderBuffer(gl, width, height, gl.RGBA4, gl.COLOR_ATTACHMENT0)
+-    if(ext) {
+-      ext.drawBuffersWEBGL(colorAttachmentArrays[0])
+-    }
+-  } else if(numColors > 1) {
+-    ext.drawBuffersWEBGL(colorAttachmentArrays[numColors])
++
++  //Compute axis info
++  var lineOffset  = LINE_OFFSET
++  for(var i=0; i<3; ++i) {
++    computeLineOffset(
++      LINE_OFFSET[i],
++      i,
++      this.bounds,
++      cubeEdges,
++      cubeAxis)
+   }
+ 
+-  //Allocate depth/stencil buffers
+-  var WEBGL_depth_texture = gl.getExtension('WEBGL_depth_texture')
+-  if(WEBGL_depth_texture) {
+-    if(useStencil) {
+-      fbo.depth = initTexture(gl, width, height,
+-                          WEBGL_depth_texture.UNSIGNED_INT_24_8_WEBGL,
+-                          gl.DEPTH_STENCIL,
+-                          gl.DEPTH_STENCIL_ATTACHMENT)
+-    } else if(useDepth) {
+-      fbo.depth = initTexture(gl, width, height,
+-                          gl.UNSIGNED_SHORT,
+-                          gl.DEPTH_COMPONENT,
+-                          gl.DEPTH_ATTACHMENT)
+-    }
+-  } else {
+-    if(useDepth && useStencil) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_STENCIL, gl.DEPTH_STENCIL_ATTACHMENT)
+-    } else if(useDepth) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_COMPONENT16, gl.DEPTH_ATTACHMENT)
+-    } else if(useStencil) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.STENCIL_INDEX, gl.STENCIL_ATTACHMENT)
++  //Set up state parameters
++  var gl = this.gl
++
++  //Draw background first
++  var cubeEnable = CUBE_ENABLE
++  for(var i=0; i<3; ++i) {
++    if(this.backgroundEnable[i]) {
++      cubeEnable[i] = cubeAxis[i]
++    } else {
++      cubeEnable[i] = 0
+     }
+   }
+ 
+-  //Check frame buffer state
+-  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
+-  if(status !== gl.FRAMEBUFFER_COMPLETE) {
++  this._background.draw(
++    model,
++    view,
++    projection,
++    bounds,
++    cubeEnable,
++    this.backgroundColor)
+ 
+-    //Release all partially allocated resources
+-    fbo._destroyed = true
++  //Draw lines
++  this._lines.bind(
++    model,
++    view,
++    projection,
++    this)
+ 
+-    //Release all resources
+-    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-    gl.deleteFramebuffer(fbo.handle)
+-    fbo.handle = null
+-    if(fbo.depth) {
+-      fbo.depth.dispose()
+-      fbo.depth = null
++  //First draw grid lines and zero lines
++  for(var i=0; i<3; ++i) {
++    var x = [0,0,0]
++    if(cubeAxis[i] > 0) {
++      x[i] = bounds[1][i]
++    } else {
++      x[i] = bounds[0][i]
+     }
+-    if(fbo._depth_rb) {
+-      gl.deleteRenderbuffer(fbo._depth_rb)
+-      fbo._depth_rb = null
++
++    //Draw grid lines
++    for(var j=0; j<2; ++j) {
++      var u = (i + 1 + j) % 3
++      var v = (i + 1 + (j^1)) % 3
++      if(this.gridEnable[u]) {
++        this._lines.drawGrid(u, v, this.bounds, x, this.gridColor[u], this.gridWidth[u]*this.pixelRatio)
++      }
+     }
+-    for(var i=0; i<fbo.color.length; ++i) {
+-      fbo.color[i].dispose()
+-      fbo.color[i] = null
++
++    //Draw zero lines (need to do this AFTER all grid lines are drawn)
++    for(var j=0; j<2; ++j) {
++      var u = (i + 1 + j) % 3
++      var v = (i + 1 + (j^1)) % 3
++      if(this.zeroEnable[v]) {
++        //Check if zero line in bounds
++        if(bounds[0][v] <= 0 && bounds[1][v] >= 0) {
++          this._lines.drawZero(u, v, this.bounds, x, this.zeroLineColor[v], this.zeroLineWidth[v]*this.pixelRatio)
++        }
++      }
+     }
+-    if(fbo._color_rb) {
+-      gl.deleteRenderbuffer(fbo._color_rb)
+-      fbo._color_rb = null
++  }
++
++  //Then draw axis lines and tick marks
++  for(var i=0; i<3; ++i) {
++
++    //Draw axis lines
++    if(this.lineEnable[i]) {
++      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].primalOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
++    }
++    if(this.lineMirror[i]) {
++      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].mirrorOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
+     }
+ 
+-    restoreFBOState(gl, state)
++    //Compute minor axes
++    var primalMinor = copyVec3(PRIMAL_MINOR, lineOffset[i].primalMinor)
++    var mirrorMinor = copyVec3(MIRROR_MINOR, lineOffset[i].mirrorMinor)
++    var tickLength  = this.lineTickLength
++    var op = 0
++    for(var j=0; j<3; ++j) {
++      var scaleFactor = pixelScaleF / model[5*j]
++      primalMinor[j] *= tickLength[j] * scaleFactor
++      mirrorMinor[j] *= tickLength[j] * scaleFactor
++    }
+ 
+-    //Throw the frame buffer error
+-    throwFBOError(status)
++    //Draw axis line ticks
++    if(this.lineTickEnable[i]) {
++      this._lines.drawAxisTicks(i, lineOffset[i].primalOffset, primalMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
++    }
++    if(this.lineTickMirror[i]) {
++      this._lines.drawAxisTicks(i, lineOffset[i].mirrorOffset, mirrorMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
++    }
+   }
+ 
+-  //Everything ok, let's get on with life
+-  restoreFBOState(gl, state)
+-}
++  //Draw text sprites
++  this._text.bind(
++    model,
++    view,
++    projection,
++    this.pixelRatio)
+ 
+-function Framebuffer(gl, width, height, colorType, numColors, useDepth, useStencil, ext) {
++  for(var i=0; i<3; ++i) {
+ 
+-  //Handle and set properties
+-  this.gl = gl
+-  this._shape = [width|0, height|0]
+-  this._destroyed = false
+-  this._ext = ext
++    var minor      = lineOffset[i].primalMinor
++    var offset     = copyVec3(PRIMAL_OFFSET, lineOffset[i].primalOffset)
+ 
+-  //Allocate buffers
+-  this.color = new Array(numColors)
+-  for(var i=0; i<numColors; ++i) {
+-    this.color[i] = null
+-  }
+-  this._color_rb = null
+-  this.depth = null
+-  this._depth_rb = null
++    for(var j=0; j<3; ++j) {
++      if(this.lineTickEnable[i]) {
++        offset[j] += pixelScaleF * minor[j] * Math.max(this.lineTickLength[j], 0)  / model[5*j]
++      }
++    }
+ 
+-  //Save depth and stencil flags
+-  this._colorType = colorType
+-  this._useDepth = useDepth
+-  this._useStencil = useStencil
++    //Draw tick text
++    if(this.tickEnable[i]) {
+ 
+-  //Shape vector for resizing
+-  var parent = this
+-  var shapeVector = [width|0, height|0]
+-  Object.defineProperties(shapeVector, {
+-    0: {
+-      get: function() {
+-        return parent._shape[0]
+-      },
+-      set: function(w) {
+-        return parent.width = w
++      //Add tick padding
++      for(var j=0; j<3; ++j) {
++        offset[j] += pixelScaleF * minor[j] * this.tickPad[j] / model[5*j]
+       }
+-    },
+-    1: {
+-      get: function() {
+-        return parent._shape[1]
+-      },
+-      set: function(h) {
+-        return parent.height = h
++
++      //Draw axis
++      this._text.drawTicks(
++        i,
++        this.tickSize[i],
++        this.tickAngle[i],
++        offset,
++        this.tickColor[i])
++    }
++
++    //Draw labels
++    if(this.labelEnable[i]) {
++
++      //Add label padding
++      for(var j=0; j<3; ++j) {
++        offset[j] += pixelScaleF * minor[j] * this.labelPad[j] / model[5*j]
+       }
++      offset[i] += 0.5 * (bounds[0][i] + bounds[1][i])
++
++      //Draw axis
++      this._text.drawLabel(
++        i,
++        this.labelSize[i],
++        this.labelAngle[i],
++        offset,
++        this.labelColor[i])
+     }
+-  })
+-  this._shapeVector = shapeVector
++  }
++}
++
++proto.dispose = function() {
++  this._text.dispose()
++  this._lines.dispose()
++  this._background.dispose()
++  this._lines = null
++  this._text = null
++  this._background = null
++  this.gl = null
++}
++
++function createAxes(gl, options) {
++  var axes = new Axes(gl)
++  axes.update(options)
++  return axes
++}
+ 
+-  //Initialize all attachments
+-  rebuildFBO(this)
++},{"./lib/background.js":87,"./lib/cube.js":88,"./lib/lines.js":89,"./lib/text.js":91,"./lib/ticks.js":92}],87:[function(require,module,exports){
++'use strict'
++
++module.exports = createBackgroundCube
++
++var createBuffer = require('gl-buffer')
++var createVAO    = require('gl-vao')
++var createShader = require('./shaders').bg
++
++function BackgroundCube(gl, buffer, vao, shader) {
++  this.gl = gl
++  this.buffer = buffer
++  this.vao = vao
++  this.shader = shader
+ }
+ 
+-var proto = Framebuffer.prototype
++var proto = BackgroundCube.prototype
+ 
+-function reshapeFBO(fbo, w, h) {
+-  //If fbo is invalid, just skip this
+-  if(fbo._destroyed) {
+-    throw new Error('gl-fbo: Can\'t resize destroyed FBO')
++proto.draw = function(model, view, projection, bounds, enable, colors) {
++  var needsBG = false
++  for(var i=0; i<3; ++i) {
++    needsBG = needsBG || enable[i]
+   }
+-
+-  //Don't resize if no change in shape
+-  if( (fbo._shape[0] === w) &&
+-      (fbo._shape[1] === h) ) {
++  if(!needsBG) {
+     return
+   }
+ 
+-  var gl = fbo.gl
++  var gl = this.gl
+ 
+-  //Check parameter ranges
+-  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
+-  if( w < 0 || w > maxFBOSize ||
+-      h < 0 || h > maxFBOSize) {
+-    throw new Error('gl-fbo: Can\'t resize FBO, invalid dimensions')
++  gl.enable(gl.POLYGON_OFFSET_FILL)
++  gl.polygonOffset(1, 2)
++
++  this.shader.bind()
++  this.shader.uniforms = {
++    model: model,
++    view: view,
++    projection: projection,
++    bounds: bounds,
++    enable: enable,
++    colors: colors
+   }
++  this.vao.bind()
++  this.vao.draw(this.gl.TRIANGLES, 36)
+ 
+-  //Update shape
+-  fbo._shape[0] = w
+-  fbo._shape[1] = h
++  gl.disable(gl.POLYGON_OFFSET_FILL)
++}
+ 
+-  //Save framebuffer state
+-  var state = saveFBOState(gl)
++proto.dispose = function() {
++  this.vao.dispose()
++  this.buffer.dispose()
++  this.shader.dispose()
++}
+ 
+-  //Resize framebuffer attachments
+-  for(var i=0; i<fbo.color.length; ++i) {
+-    fbo.color[i].shape = fbo._shape
+-  }
+-  if(fbo._color_rb) {
+-    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._color_rb)
+-    gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fbo._shape[0], fbo._shape[1])
+-  }
+-  if(fbo.depth) {
+-    fbo.depth.shape = fbo._shape
+-  }
+-  if(fbo._depth_rb) {
+-    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._depth_rb)
+-    if(fbo._useDepth && fbo._useStencil) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, fbo._shape[0], fbo._shape[1])
+-    } else if(fbo._useDepth) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, fbo._shape[0], fbo._shape[1])
+-    } else if(fbo._useStencil) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.STENCIL_INDEX, fbo._shape[0], fbo._shape[1])
++function createBackgroundCube(gl) {
++  //Create cube vertices
++  var vertices = []
++  var indices  = []
++  var ptr = 0
++  for(var d=0; d<3; ++d) {
++    var u = (d+1) % 3
++    var v = (d+2) % 3
++    var x = [0,0,0]
++    var c = [0,0,0]
++    for(var s=-1; s<=1; s+=2) {
++      indices.push(ptr,   ptr+2, ptr+1,
++                   ptr+1, ptr+2, ptr+3)
++      x[d] = s
++      c[d] = s
++      for(var i=-1; i<=1; i+=2) {
++        x[u] = i
++        for(var j=-1; j<=1; j+=2) {
++          x[v] = j
++          vertices.push(x[0], x[1], x[2],
++                        c[0], c[1], c[2])
++          ptr += 1
++        }
++      }
++      //Swap u and v
++      var tt = u
++      u = v
++      v = tt
+     }
+   }
+ 
+-  //Check FBO status after resize, if something broke then die in a fire
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo.handle)
+-  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
+-  if(status !== gl.FRAMEBUFFER_COMPLETE) {
+-    fbo.dispose()
+-    restoreFBOState(gl, state)
+-    throwFBOError(status)
+-  }
++  //Allocate buffer and vertex array
++  var buffer = createBuffer(gl, new Float32Array(vertices))
++  var elements = createBuffer(gl, new Uint16Array(indices), gl.ELEMENT_ARRAY_BUFFER)
++  var vao = createVAO(gl, [
++      {
++        buffer: buffer,
++        type: gl.FLOAT,
++        size: 3,
++        offset: 0,
++        stride: 24
++      },
++      {
++        buffer: buffer,
++        type: gl.FLOAT,
++        size: 3,
++        offset: 12,
++        stride: 24
++      }
++    ], elements)
+ 
+-  //Restore framebuffer state
+-  restoreFBOState(gl, state)
++  //Create shader object
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  shader.attributes.normal.location = 1
++
++  return new BackgroundCube(gl, buffer, vao, shader)
+ }
+ 
+-Object.defineProperties(proto, {
+-  'shape': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return [0,0]
+-      }
+-      return this._shapeVector
+-    },
+-    set: function(x) {
+-      if(!Array.isArray(x)) {
+-        x = [x|0, x|0]
+-      }
+-      if(x.length !== 2) {
+-        throw new Error('gl-fbo: Shape vector must be length 2')
+-      }
++},{"./shaders":90,"gl-buffer":94,"gl-vao":148}],88:[function(require,module,exports){
++"use strict"
+ 
+-      var w = x[0]|0
+-      var h = x[1]|0
+-      reshapeFBO(this, w, h)
++module.exports = getCubeEdges
+ 
+-      return [w, h]
+-    },
+-    enumerable: false
+-  },
+-  'width': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return 0
+-      }
+-      return this._shape[0]
+-    },
+-    set: function(w) {
+-      w = w|0
+-      reshapeFBO(this, w, this._shape[1])
+-      return w
+-    },
+-    enumerable: false
+-  },
+-  'height': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return 0
+-      }
+-      return this._shape[1]
+-    },
+-    set: function(h) {
+-      h = h|0
+-      reshapeFBO(this, this._shape[0], h)
+-      return h
+-    },
+-    enumerable: false
++var bits      = require('bit-twiddle')
++var multiply  = require('gl-mat4/multiply')
++var invert    = require('gl-mat4/invert')
++var splitPoly = require('split-polygon')
++var orient    = require('robust-orientation')
++
++var mvp        = new Array(16)
++var imvp       = new Array(16)
++var pCubeVerts = new Array(8)
++var cubeVerts  = new Array(8)
++var x          = new Array(3)
++var zero3      = [0,0,0]
++
++;(function() {
++  for(var i=0; i<8; ++i) {
++    pCubeVerts[i] =[1,1,1,1]
++    cubeVerts[i] = [1,1,1]
+   }
+-})
++})()
+ 
+-proto.bind = function() {
+-  if(this._destroyed) {
+-    return
++
++function transformHg(result, x, mat) {
++  for(var i=0; i<4; ++i) {
++    result[i] = mat[12+i]
++    for(var j=0; j<3; ++j) {
++      result[i] += x[j]*mat[4*j+i]
++    }
+   }
+-  var gl = this.gl
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, this.handle)
+-  gl.viewport(0, 0, this._shape[0], this._shape[1])
+ }
+ 
+-proto.dispose = function() {
+-  if(this._destroyed) {
+-    return
+-  }
+-  this._destroyed = true
+-  var gl = this.gl
+-  gl.deleteFramebuffer(this.handle)
+-  this.handle = null
+-  if(this.depth) {
+-    this.depth.dispose()
+-    this.depth = null
+-  }
+-  if(this._depth_rb) {
+-    gl.deleteRenderbuffer(this._depth_rb)
+-    this._depth_rb = null
+-  }
+-  for(var i=0; i<this.color.length; ++i) {
+-    this.color[i].dispose()
+-    this.color[i] = null
++var FRUSTUM_PLANES = [
++  [ 0, 0, 1, 0, 0],
++  [ 0, 0,-1, 1, 0],
++  [ 0,-1, 0, 1, 0],
++  [ 0, 1, 0, 1, 0],
++  [-1, 0, 0, 1, 0],
++  [ 1, 0, 0, 1, 0]
++]
++
++function polygonArea(p) {
++  for(var i=0; i<FRUSTUM_PLANES.length; ++i) {
++    p = splitPoly.positive(p, FRUSTUM_PLANES[i])
++    if(p.length < 3) {
++      return 0
++    }
+   }
+-  if(this._color_rb) {
+-    gl.deleteRenderbuffer(this._color_rb)
+-    this._color_rb = null
++
++  var base = p[0]
++  var ax = base[0] / base[3]
++  var ay = base[1] / base[3]
++  var area = 0.0
++  for(var i=1; i+1<p.length; ++i) {
++    var b = p[i]
++    var c = p[i+1]
++
++    var bx = b[0]/b[3]
++    var by = b[1]/b[3]
++    var cx = c[0]/c[3]
++    var cy = c[1]/c[3]
++
++    var ux = bx - ax
++    var uy = by - ay
++
++    var vx = cx - ax
++    var vy = cy - ay
++
++    area += Math.abs(ux * vy - uy * vx)
+   }
++
++  return area
+ }
+ 
+-function createFBO(gl, width, height, options) {
++var CUBE_EDGES = [1,1,1]
++var CUBE_AXIS  = [0,0,0]
++var CUBE_RESULT = {
++  cubeEdges: CUBE_EDGES,
++  axis: CUBE_AXIS
++}
+ 
+-  //Update frame buffer error code values
+-  if(!FRAMEBUFFER_UNSUPPORTED) {
+-    FRAMEBUFFER_UNSUPPORTED = gl.FRAMEBUFFER_UNSUPPORTED
+-    FRAMEBUFFER_INCOMPLETE_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT
+-    FRAMEBUFFER_INCOMPLETE_DIMENSIONS = gl.FRAMEBUFFER_INCOMPLETE_DIMENSIONS
+-    FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+-  }
++function getCubeEdges(model, view, projection, bounds) {
+ 
+-  //Lazily initialize color attachment arrays
+-  var WEBGL_draw_buffers = gl.getExtension('WEBGL_draw_buffers')
+-  if(!colorAttachmentArrays && WEBGL_draw_buffers) {
+-    lazyInitColorAttachments(gl, WEBGL_draw_buffers)
++  //Concatenate matrices
++  multiply(mvp, view, model)
++  multiply(mvp, projection, mvp)
++  
++  //First project cube vertices
++  var ptr = 0
++  for(var i=0; i<2; ++i) {
++    x[2] = bounds[i][2]
++    for(var j=0; j<2; ++j) {
++      x[1] = bounds[j][1]
++      for(var k=0; k<2; ++k) {
++        x[0] = bounds[k][0]
++        transformHg(pCubeVerts[ptr], x, mvp)
++        ptr += 1
++      }
++    }
+   }
+ 
+-  //Special case: Can accept an array as argument
+-  if(Array.isArray(width)) {
+-    options = height
+-    height = width[1]|0
+-    width = width[0]|0
+-  }
++  //Classify camera against cube faces
++  var closest = -1
+ 
+-  if(typeof width !== 'number') {
+-    throw new Error('gl-fbo: Missing shape parameter')
++  for(var i=0; i<8; ++i) {
++    var w = pCubeVerts[i][3]
++    for(var l=0; l<3; ++l) {
++      cubeVerts[i][l] = pCubeVerts[i][l] / w
++    }
++    if(w < 0) {
++      if(closest < 0) {
++        closest = i
++      } else if(cubeVerts[i][2] < cubeVerts[closest][2]) {
++        closest = i
++      }
++    }    
+   }
+ 
+-  //Validate width/height properties
+-  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
+-  if(width < 0 || width > maxFBOSize || height < 0 || height > maxFBOSize) {
+-    throw new Error('gl-fbo: Parameters are too large for FBO')
++  if(closest < 0) {
++    closest = 0
++    for(var d=0; d<3; ++d) {
++      var u = (d+2) % 3
++      var v = (d+1) % 3
++      var o0 = -1
++      var o1 = -1
++      for(var s=0; s<2; ++s) {
++        var f0 = (s<<d)
++        var f1 = f0 + (s << u) + ((1-s) << v)
++        var f2 = f0 + ((1-s) << u) + (s << v)
++        if(orient(cubeVerts[f0], cubeVerts[f1], cubeVerts[f2], zero3) < 0) {
++          continue
++        }
++        if(s) {
++          o0 = 1
++        } else {
++          o1 = 1
++        }
++      }
++      if(o0 < 0 || o1 < 0) {
++        if(o1 > o0) {
++          closest |= 1<<d
++        }
++        continue
++      } 
++      for(var s=0; s<2; ++s) {
++        var f0 = (s<<d)
++        var f1 = f0 + (s << u) + ((1-s) << v)
++        var f2 = f0 + ((1-s) << u) + (s << v)    
++        var o = polygonArea([
++            pCubeVerts[f0], 
++            pCubeVerts[f1], 
++            pCubeVerts[f2], 
++            pCubeVerts[f0+(1<<u)+(1<<v)]])
++        if(s) {
++          o0 = o
++        } else {
++          o1 = o
++        }
++      }
++      if(o1 > o0) {
++        closest |= 1<<d
++        continue
++      }
++    }
+   }
+ 
+-  //Handle each option type
+-  options = options || {}
++  var farthest = 7^closest
+ 
+-  //Figure out number of color buffers to use
+-  var numColors = 1
+-  if('color' in options) {
+-    numColors = Math.max(options.color|0, 0)
+-    if(numColors < 0) {
+-      throw new Error('gl-fbo: Must specify a nonnegative number of colors')
++  //Find lowest vertex which is not closest closest
++  var bottom = -1
++  for(var i=0; i<8; ++i) {
++    if(i === closest || i === farthest) {
++      continue
+     }
+-    if(numColors > 1) {
+-      //Check if multiple render targets supported
+-      if(!WEBGL_draw_buffers) {
+-        throw new Error('gl-fbo: Multiple draw buffer extension not supported')
+-      } else if(numColors > gl.getParameter(WEBGL_draw_buffers.MAX_COLOR_ATTACHMENTS_WEBGL)) {
+-        throw new Error('gl-fbo: Context does not support ' + numColors + ' draw buffers')
+-      }
++    if(bottom < 0) {
++      bottom = i
++    } else if(cubeVerts[bottom][1] > cubeVerts[i][1]) {
++      bottom = i
+     }
+   }
+ 
+-  //Determine whether to use floating point textures
+-  var colorType = gl.UNSIGNED_BYTE
+-  var OES_texture_float = gl.getExtension('OES_texture_float')
+-  if(options.float && numColors > 0) {
+-    if(!OES_texture_float) {
+-      throw new Error('gl-fbo: Context does not support floating point textures')
++  //Find left/right neighbors of bottom vertex
++  var left = -1
++  for(var i=0; i<3; ++i) {
++    var idx = bottom ^ (1<<i)
++    if(idx === closest || idx === farthest) {
++      continue
+     }
+-    colorType = gl.FLOAT
+-  } else if(options.preferFloat && numColors > 0) {
+-    if(OES_texture_float) {
+-      colorType = gl.FLOAT
++    if(left < 0) {
++      left = idx
++    }
++    var v = cubeVerts[idx]
++    if(v[0] < cubeVerts[left][0]) {
++      left = idx
+     }
+   }
+-
+-  //Check if we should use depth buffer
+-  var useDepth = true
+-  if('depth' in options) {
+-    useDepth = !!options.depth
++  var right = -1
++  for(var i=0; i<3; ++i) {
++    var idx = bottom ^ (1<<i)
++    if(idx === closest || idx === farthest || idx === left) {
++      continue
++    }
++    if(right < 0) {
++      right = idx
++    }
++    var v = cubeVerts[idx]
++    if(v[0] > cubeVerts[right][0]) {
++      right = idx
++    }
+   }
+ 
+-  //Check if we should use a stencil buffer
+-  var useStencil = false
+-  if('stencil' in options) {
+-    useStencil = !!options.stencil
++  //Determine edge axis coordinates
++  var cubeEdges = CUBE_EDGES
++  cubeEdges[0] = cubeEdges[1] = cubeEdges[2] = 0
++  cubeEdges[bits.log2(left^bottom)] = bottom&left
++  cubeEdges[bits.log2(bottom^right)] = bottom&right
++  var top = right ^ 7
++  if(top === closest || top === farthest) {
++    top = left ^ 7
++    cubeEdges[bits.log2(right^top)] = top&right
++  } else {
++    cubeEdges[bits.log2(left^top)] = top&left
+   }
+ 
+-  return new Framebuffer(
+-    gl,
+-    width,
+-    height,
+-    colorType,
+-    numColors,
+-    useDepth,
+-    useStencil,
+-    WEBGL_draw_buffers)
+-}
+-
+-},{"gl-texture2d":188}],109:[function(require,module,exports){
+-
+-var createShader  = require('gl-shader')
+-
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, nextPosition;\nattribute float arcLength, lineWidth;\nattribute vec4 color;\n\nuniform vec2 screenShape;\nuniform float pixelRatio;\nuniform mat4 model, view, projection;\n\nvarying vec4 fragColor;\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\n\nvoid main() {\n  vec4 projected = projection * view * model * vec4(position, 1.0);\n  vec4 tangentClip = projection * view * model * vec4(nextPosition - position, 0.0);\n  vec2 tangent = normalize(screenShape * tangentClip.xy);\n  vec2 offset = 0.5 * pixelRatio * lineWidth * vec2(tangent.y, -tangent.x) / screenShape;\n\n  gl_Position = vec4(projected.xy + projected.w * offset, projected.zw);\n\n  worldPosition = position;\n  pixelArcLength = arcLength;\n  fragColor = color;\n}\n"
+-var forwardFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3      clipBounds[2];\nuniform sampler2D dashTexture;\nuniform float     dashScale;\nuniform float     opacity;\n\nvarying vec3    worldPosition;\nvarying float   pixelArcLength;\nvarying vec4    fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  float dashWeight = texture2D(dashTexture, vec2(dashScale * pixelArcLength, 0)).r;\n  if(dashWeight < 0.5) {\n    discard;\n  }\n  gl_FragColor = fragColor * opacity;\n}\n"
+-var pickFrag = "precision mediump float;\n#define GLSLIFY 1\n\n#define FLOAT_MAX  1.70141184e38\n#define FLOAT_MIN  1.17549435e-38\n\nlowp vec4 encode_float_1_0(highp float v) {\n  highp float av = abs(v);\n\n  //Handle special cases\n  if(av < FLOAT_MIN) {\n    return vec4(0.0, 0.0, 0.0, 0.0);\n  } else if(v > FLOAT_MAX) {\n    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;\n  } else if(v < -FLOAT_MAX) {\n    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;\n  }\n\n  highp vec4 c = vec4(0,0,0,0);\n\n  //Compute exponent and mantissa\n  highp float e = floor(log2(av));\n  highp float m = av * pow(2.0, -e) - 1.0;\n  \n  //Unpack mantissa\n  c[1] = floor(128.0 * m);\n  m -= c[1] / 128.0;\n  c[2] = floor(32768.0 * m);\n  m -= c[2] / 32768.0;\n  c[3] = floor(8388608.0 * m);\n  \n  //Unpack exponent\n  highp float ebias = e + 127.0;\n  c[0] = floor(ebias / 2.0);\n  ebias -= c[0] * 2.0;\n  c[1] += floor(ebias) * 128.0; \n\n  //Unpack sign bit\n  c[0] += 128.0 * step(0.0, -v);\n\n  //Scale back to range\n  return c / 255.0;\n}\n\n\n\nuniform float pickId;\nuniform vec3 clipBounds[2];\n\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId/255.0, encode_float_1_0(pixelArcLength).xyz);\n}"
+-
+-var ATTRIBUTES = [
+-  {name: 'position', type: 'vec3'},
+-  {name: 'nextPosition', type: 'vec3'},
+-  {name: 'arcLength', type: 'float'},
+-  {name: 'lineWidth', type: 'float'},
+-  {name: 'color', type: 'vec4'}
+-]
+-
+-exports.createShader = function(gl) {
+-  return createShader(gl, vertSrc, forwardFrag, null, ATTRIBUTES)
+-}
++  //Determine visible faces
++  var axis = CUBE_AXIS
++  var cutCorner = closest
++  for(var d=0; d<3; ++d) {
++    if(cutCorner & (1<<d)) {
++      axis[d] = -1
++    } else {
++      axis[d] = 1
++    }
++  }
+ 
+-exports.createPickShader = function(gl) {
+-  return createShader(gl, vertSrc, pickFrag, null, ATTRIBUTES)
++  //Return result
++  return CUBE_RESULT
+ }
+-
+-},{"gl-shader":164}],110:[function(require,module,exports){
++},{"bit-twiddle":35,"gl-mat4/invert":111,"gl-mat4/multiply":113,"robust-orientation":219,"split-polygon":236}],89:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createLinePlot
+-
+-var createBuffer = require('gl-buffer')
+-var createVAO = require('gl-vao')
+-var createTexture = require('gl-texture2d')
+-var unpackFloat = require('glsl-read-float')
+-var bsearch = require('binary-search-bounds')
+-var ndarray = require('ndarray')
+-var shaders = require('./lib/shaders')
++module.exports    = createLines
+ 
+-var createShader = shaders.createShader
+-var createPickShader = shaders.createPickShader
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var createShader  = require('./shaders').line
+ 
+-var identity = [1, 0, 0, 0,
+-  0, 1, 0, 0,
+-  0, 0, 1, 0,
+-  0, 0, 0, 1]
++var MAJOR_AXIS = [0,0,0]
++var MINOR_AXIS = [0,0,0]
++var SCREEN_AXIS = [0,0,0]
++var OFFSET_VEC = [0,0,0]
++var SHAPE = [1,1]
+ 
+-function distance (a, b) {
+-  var s = 0.0
+-  for (var i = 0; i < 3; ++i) {
+-    var d = a[i] - b[i]
+-    s += d * d
+-  }
+-  return Math.sqrt(s)
++function zeroVec(a) {
++  a[0] = a[1] = a[2] = 0
++  return a
+ }
+ 
+-function filterClipBounds (bounds) {
+-  var result = [[-1e6, -1e6, -1e6], [1e6, 1e6, 1e6]]
+-  for (var i = 0; i < 3; ++i) {
+-    result[0][i] = Math.max(bounds[0][i], result[0][i])
+-    result[1][i] = Math.min(bounds[1][i], result[1][i])
+-  }
+-  return result
++function copyVec(a,b) {
++  a[0] = b[0]
++  a[1] = b[1]
++  a[2] = b[2]
++  return a
+ }
+ 
+-function PickResult (tau, position, index, dataCoordinate) {
+-  this.arcLength = tau
+-  this.position = position
+-  this.index = index
+-  this.dataCoordinate = dataCoordinate
++function Lines(gl, vertBuffer, vao, shader, tickCount, tickOffset, gridCount, gridOffset) {
++  this.gl         = gl
++  this.vertBuffer = vertBuffer
++  this.vao        = vao
++  this.shader     = shader
++  this.tickCount  = tickCount
++  this.tickOffset = tickOffset
++  this.gridCount  = gridCount
++  this.gridOffset = gridOffset
+ }
+ 
+-function LinePlot (gl, shader, pickShader, buffer, vao, texture) {
+-  this.gl = gl
+-  this.shader = shader
+-  this.pickShader = pickShader
+-  this.buffer = buffer
+-  this.vao = vao
+-  this.clipBounds = [
+-    [ -Infinity, -Infinity, -Infinity ],
+-    [ Infinity, Infinity, Infinity ]]
+-  this.points = []
+-  this.arcLength = []
+-  this.vertexCount = 0
+-  this.bounds = [[0, 0, 0], [0, 0, 0]]
+-  this.pickId = 0
+-  this.lineWidth = 1
+-  this.texture = texture
+-  this.dashScale = 1
+-  this.opacity = 1
+-  this.dirty = true
+-  this.pixelRatio = 1
+-}
++var proto = Lines.prototype
+ 
+-var proto = LinePlot.prototype
++proto.bind = function(model, view, projection) {
++  this.shader.bind()
++  this.shader.uniforms.model = model
++  this.shader.uniforms.view = view
++  this.shader.uniforms.projection = projection
+ 
+-proto.isTransparent = function () {
+-  return this.opacity < 1
+-}
++  SHAPE[0] = this.gl.drawingBufferWidth
++  SHAPE[1] = this.gl.drawingBufferHeight
+ 
+-proto.isOpaque = function () {
+-  return this.opacity >= 1
++  this.shader.uniforms.screenShape = SHAPE
++  this.vao.bind()
+ }
+ 
+-proto.pickSlots = 1
+-
+-proto.setPickBase = function (id) {
+-  this.pickId = id
+-}
++proto.drawAxisLine = function(j, bounds, offset, color, lineWidth) {
++  var minorAxis = zeroVec(MINOR_AXIS)
++  this.shader.uniforms.majorAxis = MINOR_AXIS
+ 
+-proto.drawTransparent = proto.draw = function (camera) {
+-  var gl = this.gl
+-  var shader = this.shader
+-  var vao = this.vao
+-  shader.bind()
+-  shader.uniforms = {
+-    model: camera.model || identity,
+-    view: camera.view || identity,
+-    projection: camera.projection || identity,
+-    clipBounds: filterClipBounds(this.clipBounds),
+-    dashTexture: this.texture.bind(),
+-    dashScale: this.dashScale / this.arcLength[this.arcLength.length - 1],
+-    opacity: this.opacity,
+-    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
+-    pixelRatio: this.pixelRatio
+-  }
+-  vao.bind()
+-  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
+-}
++  minorAxis[j] = bounds[1][j] - bounds[0][j]
++  this.shader.uniforms.minorAxis = minorAxis
+ 
+-proto.drawPick = function (camera) {
+-  var gl = this.gl
+-  var shader = this.pickShader
+-  var vao = this.vao
+-  shader.bind()
+-  shader.uniforms = {
+-    model: camera.model || identity,
+-    view: camera.view || identity,
+-    projection: camera.projection || identity,
+-    pickId: this.pickId,
+-    clipBounds: filterClipBounds(this.clipBounds),
+-    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
+-    pixelRatio: this.pixelRatio
+-  }
+-  vao.bind()
+-  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
+-}
++  var noffset = copyVec(OFFSET_VEC, offset)
++  noffset[j] += bounds[0][j]
++  this.shader.uniforms.offset = noffset
+ 
+-proto.update = function (options) {
+-  var i, j
++  this.shader.uniforms.lineWidth = lineWidth
+ 
+-  this.dirty = true
++  this.shader.uniforms.color = color
+ 
+-  var connectGaps = !!options.connectGaps
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[(j+2)%3] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.vao.draw(this.gl.TRIANGLES, 6)
+ 
+-  if ('dashScale' in options) {
+-    this.dashScale = options.dashScale
+-  }
+-  if ('opacity' in options) {
+-    this.opacity = +options.opacity
+-  }
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[(j+1)%3] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.vao.draw(this.gl.TRIANGLES, 6)
++}
+ 
+-  var positions = options.position || options.positions
+-  if (!positions) {
++proto.drawAxisTicks = function(j, offset, minorAxis, color, lineWidth) {
++  if(!this.tickCount[j]) {
+     return
+   }
+ 
+-  // Default color
+-  var colors = options.color || options.colors || [0, 0, 0, 1]
+-
+-  var lineWidth = options.lineWidth || 1
++  var majorAxis = zeroVec(MAJOR_AXIS)
++  majorAxis[j]  = 1
++  this.shader.uniforms.majorAxis = majorAxis
++  this.shader.uniforms.offset    = offset
++  this.shader.uniforms.minorAxis = minorAxis
++  this.shader.uniforms.color     = color
++  this.shader.uniforms.lineWidth = lineWidth
+ 
+-  // Recalculate buffer data
+-  var buffer = []
+-  var arcLengthArray = []
+-  var pointArray = []
+-  var arcLength = 0.0
+-  var vertexCount = 0
+-  var bounds = [
+-    [ Infinity, Infinity, Infinity ],
+-    [ -Infinity, -Infinity, -Infinity ]]
+-  var hadGap = false
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[j] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.vao.draw(this.gl.TRIANGLES, this.tickCount[j], this.tickOffset[j])
++}
+ 
+-  fill_loop:
+-  for (i = 1; i < positions.length; ++i) {
+-    var a = positions[i - 1]
+-    var b = positions[i]
+ 
+-    arcLengthArray.push(arcLength)
+-    pointArray.push(a.slice())
++proto.drawGrid = function(i, j, bounds, offset, color, lineWidth) {
++  if(!this.gridCount[i]) {
++    return
++  }
+ 
+-    for (j = 0; j < 3; ++j) {
+-      if (isNaN(a[j]) || isNaN(b[j]) ||
+-        !isFinite(a[j]) || !isFinite(b[j])) {
++  var minorAxis = zeroVec(MINOR_AXIS)
++  minorAxis[j]  = bounds[1][j] - bounds[0][j]
++  this.shader.uniforms.minorAxis = minorAxis
+ 
+-        if (!connectGaps && buffer.length > 0) {
+-          for (var k = 0; k < 24; ++k) {
+-            buffer.push(buffer[buffer.length - 12])
+-          }
+-          vertexCount += 2
+-          hadGap = true
+-        }
++  var noffset = copyVec(OFFSET_VEC, offset)
++  noffset[j] += bounds[0][j]
++  this.shader.uniforms.offset = noffset
+ 
+-        continue fill_loop
+-      }
+-      bounds[0][j] = Math.min(bounds[0][j], a[j], b[j])
+-      bounds[1][j] = Math.max(bounds[1][j], a[j], b[j])
+-    }
++  var majorAxis = zeroVec(MAJOR_AXIS)
++  majorAxis[i]  = 1
++  this.shader.uniforms.majorAxis = majorAxis
+ 
+-    var acolor, bcolor
+-    if (Array.isArray(colors[0])) {
+-      acolor = colors[i - 1]
+-      bcolor = colors[i]
+-    } else {
+-      acolor = bcolor = colors
+-    }
+-    if (acolor.length === 3) {
+-      acolor = [acolor[0], acolor[1], acolor[2], 1]
+-    }
+-    if (bcolor.length === 3) {
+-      bcolor = [bcolor[0], bcolor[1], bcolor[2], 1]
+-    }
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[i] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.shader.uniforms.lineWidth = lineWidth
+ 
+-    var w0
+-    if (Array.isArray(lineWidth)) {
+-      w0 = lineWidth[i - 1]
+-    } else {
+-      w0 = lineWidth
+-    }
++  this.shader.uniforms.color = color
++  this.vao.draw(this.gl.TRIANGLES, this.gridCount[i], this.gridOffset[i])
++}
+ 
+-    var t0 = arcLength
+-    arcLength += distance(a, b)
++proto.drawZero = function(j, i, bounds, offset, color, lineWidth) {
++  var minorAxis = zeroVec(MINOR_AXIS)
++  this.shader.uniforms.majorAxis = minorAxis
+ 
+-    if (hadGap) {
+-      for (j = 0; j < 2; ++j) {
+-        buffer.push(
+-          a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3])
+-      }
+-      vertexCount += 2
+-      hadGap = false
+-    }
++  minorAxis[j] = bounds[1][j] - bounds[0][j]
++  this.shader.uniforms.minorAxis = minorAxis
+ 
+-    buffer.push(
+-      a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3],
+-      a[0], a[1], a[2], b[0], b[1], b[2], t0, -w0, acolor[0], acolor[1], acolor[2], acolor[3],
+-      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, -w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3],
+-      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3])
++  var noffset = copyVec(OFFSET_VEC, offset)
++  noffset[j] += bounds[0][j]
++  this.shader.uniforms.offset = noffset
+ 
+-    vertexCount += 4
+-  }
+-  this.buffer.update(buffer)
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[i] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.shader.uniforms.lineWidth = lineWidth
+ 
+-  arcLengthArray.push(arcLength)
+-  pointArray.push(positions[positions.length - 1].slice())
++  this.shader.uniforms.color = color
++  this.vao.draw(this.gl.TRIANGLES, 6)
++}
+ 
+-  this.bounds = bounds
++proto.dispose = function() {
++  this.vao.dispose()
++  this.vertBuffer.dispose()
++  this.shader.dispose()
++}
+ 
+-  this.vertexCount = vertexCount
++function createLines(gl, bounds, ticks) {
++  var vertices    = []
++  var tickOffset  = [0,0,0]
++  var tickCount   = [0,0,0]
+ 
+-  this.points = pointArray
+-  this.arcLength = arcLengthArray
++  //Create grid lines for each axis/direction
++  var gridOffset = [0,0,0]
++  var gridCount  = [0,0,0]
+ 
+-  if ('dashes' in options) {
+-    var dashArray = options.dashes
++  //Add zero line
++  vertices.push(
++    0,0,1,   0,1,1,   0,0,-1,
++    0,0,-1,  0,1,1,   0,1,-1)
+ 
+-    // Calculate prefix sum
+-    var prefixSum = dashArray.slice()
+-    prefixSum.unshift(0)
+-    for (i = 1; i < prefixSum.length; ++i) {
+-      prefixSum[i] = prefixSum[i - 1] + prefixSum[i]
++  for(var i=0; i<3; ++i) {
++    //Axis tick marks
++    var start = ((vertices.length / 3)|0)
++    for(var j=0; j<ticks[i].length; ++j) {
++      var x = +ticks[i][j].x
++      vertices.push(
++        x,0,1,   x,1,1,   x,0,-1,
++        x,0,-1,  x,1,1,   x,1,-1)
+     }
++    var end = ((vertices.length / 3)|0)
++    tickOffset[i] = start
++    tickCount[i]  = end - start
+ 
+-    var dashTexture = ndarray(new Array(256 * 4), [256, 1, 4])
+-    for (i = 0; i < 256; ++i) {
+-      for (j = 0; j < 4; ++j) {
+-        dashTexture.set(i, 0, j, 0)
+-      }
+-      if (bsearch.le(prefixSum, prefixSum[prefixSum.length - 1] * i / 255.0) & 1) {
+-        dashTexture.set(i, 0, 0, 0)
+-      } else {
+-        dashTexture.set(i, 0, 0, 255)
+-      }
++    //Grid lines
++    var start = ((vertices.length / 3)|0)
++    for(var k=0; k<ticks[i].length; ++k) {
++      var x = +ticks[i][k].x
++      vertices.push(
++        x,0,1,   x,1,1,   x,0,-1,
++        x,0,-1,  x,1,1,   x,1,-1)
+     }
+-
+-    this.texture.setPixels(dashTexture)
++    var end = ((vertices.length / 3)|0)
++    gridOffset[i] = start
++    gridCount[i]  = end - start
+   }
+-}
+-
+-proto.dispose = function () {
+-  this.shader.dispose()
+-  this.vao.dispose()
+-  this.buffer.dispose()
+-}
+ 
+-proto.pick = function (selection) {
+-  if (!selection) {
+-    return null
+-  }
+-  if (selection.id !== this.pickId) {
+-    return null
+-  }
+-  var tau = unpackFloat(
+-    selection.value[0],
+-    selection.value[1],
+-    selection.value[2],
+-    0)
+-  var index = bsearch.le(this.arcLength, tau)
+-  if (index < 0) {
+-    return null
+-  }
+-  if (index === this.arcLength.length - 1) {
+-    return new PickResult(
+-      this.arcLength[this.arcLength.length - 1],
+-      this.points[this.points.length - 1].slice(),
+-      index)
+-  }
+-  var a = this.points[index]
+-  var b = this.points[Math.min(index + 1, this.points.length - 1)]
+-  var t = (tau - this.arcLength[index]) / (this.arcLength[index + 1] - this.arcLength[index])
+-  var ti = 1.0 - t
+-  var x = [0, 0, 0]
+-  for (var i = 0; i < 3; ++i) {
+-    x[i] = ti * a[i] + t * b[i]
+-  }
+-  var dataIndex = Math.min((t < 0.5) ? index : (index + 1), this.points.length - 1)
+-  return new PickResult(
+-    tau,
+-    x,
+-    dataIndex,
+-    this.points[dataIndex])
++  //Create cube VAO
++  var vertBuf = createBuffer(gl, new Float32Array(vertices))
++  var vao = createVAO(gl, [
++    { "buffer": vertBuf,
++      "type": gl.FLOAT,
++      "size": 3,
++      "stride": 0,
++      "offset": 0
++    }
++  ])
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  return new Lines(gl, vertBuf, vao, shader, tickCount, tickOffset, gridCount, gridOffset)
+ }
+ 
+-function createLinePlot (options) {
+-  var gl = options.gl || (options.scene && options.scene.gl)
++},{"./shaders":90,"gl-buffer":94,"gl-vao":148}],90:[function(require,module,exports){
++'use strict'
+ 
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.nextPosition.location = 1
+-  shader.attributes.arcLength.location = 2
+-  shader.attributes.lineWidth.location = 3
+-  shader.attributes.color.location = 4
+ 
+-  var pickShader = createPickShader(gl)
+-  pickShader.attributes.position.location = 0
+-  pickShader.attributes.nextPosition.location = 1
+-  pickShader.attributes.arcLength.location = 2
+-  pickShader.attributes.lineWidth.location = 3
+-  pickShader.attributes.color.location = 4
++var createShader = require('gl-shader')
+ 
+-  var buffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    {
+-      'buffer': buffer,
+-      'size': 3,
+-      'offset': 0,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 3,
+-      'offset': 12,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 1,
+-      'offset': 24,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 1,
+-      'offset': 28,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 4,
+-      'offset': 32,
+-      'stride': 48
+-    }
++var lineVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, majorAxis, minorAxis, screenAxis;\nuniform float lineWidth;\nuniform vec2 screenShape;\n\nvec3 project(vec3 p) {\n  vec4 pp = projection * view * model * vec4(p, 1.0);\n  return pp.xyz / max(pp.w, 0.0001);\n}\n\nvoid main() {\n  vec3 major = position.x * majorAxis;\n  vec3 minor = position.y * minorAxis;\n\n  vec3 vPosition = major + minor + offset;\n  vec3 pPosition = project(vPosition);\n  vec3 offset = project(vPosition + screenAxis * position.z);\n\n  vec2 screen = normalize((offset - pPosition).xy * screenShape) / screenShape;\n\n  gl_Position = vec4(pPosition + vec3(0.5 * screen * lineWidth, 0), 1.0);\n}\n"
++var lineFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
++exports.line = function(gl) {
++  return createShader(gl, lineVert, lineFrag, null, [
++    {name: 'position', type: 'vec3'}
+   ])
++}
+ 
+-  // Create texture for dash pattern
+-  var defaultTexture = ndarray(new Array(256 * 4), [256, 1, 4])
+-  for (var i = 0; i < 256 * 4; ++i) {
+-    defaultTexture.data[i] = 255
+-  }
+-  var texture = createTexture(gl, defaultTexture)
+-  texture.wrap = gl.REPEAT
+-
+-  var linePlot = new LinePlot(gl, shader, pickShader, buffer, vao, texture)
+-  linePlot.update(options)
+-  return linePlot
++var textVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, axis;\nuniform float scale, angle, pixelScale;\nuniform vec2 resolution;\n\nvoid main() {  \n  //Compute plane offset\n  vec2 planeCoord = position.xy * pixelScale;\n  mat2 planeXform = scale * mat2(cos(angle), sin(angle),\n                                -sin(angle), cos(angle));\n  vec2 viewOffset = 2.0 * planeXform * planeCoord / resolution;\n\n  //Compute world offset\n  float axisDistance = position.z;\n  vec3 dataPosition = axisDistance * axis + offset;\n  vec4 worldPosition = model * vec4(dataPosition, 1);\n  \n  //Compute clip position\n  vec4 viewPosition = view * worldPosition;\n  vec4 clipPosition = projection * viewPosition;\n  clipPosition /= clipPosition.w;\n\n  //Apply text offset in clip coordinates\n  clipPosition += vec4(viewOffset, 0, 0);\n\n  //Done\n  gl_Position = clipPosition;\n}"
++var textFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
++exports.text = function(gl) {
++  return createShader(gl, textVert, textFrag, null, [
++    {name: 'position', type: 'vec3'}
++  ])
+ }
+ 
+-},{"./lib/shaders":109,"binary-search-bounds":111,"gl-buffer":105,"gl-texture2d":188,"gl-vao":192,"glsl-read-float":112,"ndarray":219}],111:[function(require,module,exports){
+-arguments[4][9][0].apply(exports,arguments)
+-},{"dup":9}],112:[function(require,module,exports){
+-module.exports = decodeFloat
++var bgVert = "#define GLSLIFY 1\nattribute vec3 position;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection;\nuniform vec3 enable;\nuniform vec3 bounds[2];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  if(dot(normal, enable) > 0.0) {\n    vec3 nPosition = mix(bounds[0], bounds[1], 0.5 * (position + 1.0));\n    gl_Position = projection * view * model * vec4(nPosition, 1.0);\n  } else {\n    gl_Position = vec4(0,0,0,0);\n  }\n  colorChannel = abs(normal);\n}"
++var bgFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 colors[3];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  gl_FragColor = colorChannel.x * colors[0] + \n                 colorChannel.y * colors[1] +\n                 colorChannel.z * colors[2];\n}"
++exports.bg = function(gl) {
++  return createShader(gl, bgVert, bgFrag, null, [
++    {name: 'position', type: 'vec3'},
++    {name: 'normal', type: 'vec3'}
++  ])
++}
+ 
+-var UINT8_VIEW = new Uint8Array(4)
+-var FLOAT_VIEW = new Float32Array(UINT8_VIEW.buffer)
++},{"gl-shader":133}],91:[function(require,module,exports){
++(function (process){
++"use strict"
+ 
+-function decodeFloat(x, y, z, w) {
+-  UINT8_VIEW[0] = w
+-  UINT8_VIEW[1] = z
+-  UINT8_VIEW[2] = y
+-  UINT8_VIEW[3] = x
+-  return FLOAT_VIEW[0]
+-}
++module.exports = createTextSprites
+ 
+-},{}],113:[function(require,module,exports){
+-module.exports = invert
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var vectorizeText = require('vectorize-text')
++var createShader  = require('./shaders').text
+ 
+-/**
+- * Inverts a mat3
+- *
+- * @alias mat3.invert
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
+- */
+-function invert(out, a) {
+-  var a00 = a[0], a01 = a[1], a02 = a[2]
+-  var a10 = a[3], a11 = a[4], a12 = a[5]
+-  var a20 = a[6], a21 = a[7], a22 = a[8]
++var globals = window || process.global || {}
++var __TEXT_CACHE  = globals.__TEXT_CACHE || {}
++globals.__TEXT_CACHE = {}
+ 
+-  var b01 = a22 * a11 - a12 * a21
+-  var b11 = -a22 * a10 + a12 * a20
+-  var b21 = a21 * a10 - a11 * a20
++//Vertex buffer format for text is:
++//
++/// [x,y,z] = Spatial coordinate
++//
+ 
+-  // Calculate the determinant
+-  var det = a00 * b01 + a01 * b11 + a02 * b21
++var VERTEX_SIZE = 3
++var VERTEX_STRIDE = VERTEX_SIZE * 4
+ 
+-  if (!det) return null
+-  det = 1.0 / det
++function TextSprites(
++  gl,
++  shader,
++  buffer,
++  vao) {
++  this.gl           = gl
++  this.shader       = shader
++  this.buffer       = buffer
++  this.vao          = vao
++  this.tickOffset   =
++  this.tickCount    =
++  this.labelOffset  =
++  this.labelCount   = null
++}
+ 
+-  out[0] = b01 * det
+-  out[1] = (-a22 * a01 + a02 * a21) * det
+-  out[2] = (a12 * a01 - a02 * a11) * det
+-  out[3] = b11 * det
+-  out[4] = (a22 * a00 - a02 * a20) * det
+-  out[5] = (-a12 * a00 + a02 * a10) * det
+-  out[6] = b21 * det
+-  out[7] = (-a21 * a00 + a01 * a20) * det
+-  out[8] = (a11 * a00 - a01 * a10) * det
++var proto = TextSprites.prototype
+ 
+-  return out
++//Bind textures for rendering
++var SHAPE = [0,0]
++proto.bind = function(model, view, projection, pixelScale) {
++  this.vao.bind()
++  this.shader.bind()
++  var uniforms = this.shader.uniforms
++  uniforms.model = model
++  uniforms.view = view
++  uniforms.projection = projection
++  uniforms.pixelScale = pixelScale
++  SHAPE[0] = this.gl.drawingBufferWidth
++  SHAPE[1] = this.gl.drawingBufferHeight
++  this.shader.uniforms.resolution = SHAPE
+ }
+ 
+-},{}],114:[function(require,module,exports){
+-module.exports = clone;
++proto.update = function(bounds, labels, labelFont, ticks, tickFont) {
++  var gl = this.gl
++  var data = []
+ 
+-/**
+- * Creates a new mat4 initialized with values from an existing matrix
+- *
+- * @param {mat4} a matrix to clone
+- * @returns {mat4} a new 4x4 matrix
+- */
+-function clone(a) {
+-    var out = new Float32Array(16);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    out[9] = a[9];
+-    out[10] = a[10];
+-    out[11] = a[11];
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
+-},{}],115:[function(require,module,exports){
+-module.exports = create;
++  function addItem(t, text, font, size) {
++    var fontcache = __TEXT_CACHE[font]
++    if(!fontcache) {
++      fontcache = __TEXT_CACHE[font] = {}
++    }
++    var mesh = fontcache[text]
++    if(!mesh) {
++      mesh = fontcache[text] = tryVectorizeText(text, {
++        triangles: true,
++        font: font,
++        textAlign: 'center',
++        textBaseline: 'middle'
++      })
++    }
++    var scale = (size || 12) / 12
++    var positions = mesh.positions
++    var cells = mesh.cells
++    var lo = [ Infinity, Infinity]
++    var hi = [-Infinity,-Infinity]
++    for(var i=0, nc=cells.length; i<nc; ++i) {
++      var c = cells[i]
++      for(var j=2; j>=0; --j) {
++        var p = positions[c[j]]
++        data.push(scale*p[0], -scale*p[1], t)
++      }
++    }
++  }
+ 
+-/**
+- * Creates a new identity mat4
+- *
+- * @returns {mat4} a new 4x4 matrix
+- */
+-function create() {
+-    var out = new Float32Array(16);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-};
+-},{}],116:[function(require,module,exports){
+-module.exports = determinant;
++  //Generate sprites for all 3 axes, store data in texture atlases
++  var tickOffset  = [0,0,0]
++  var tickCount   = [0,0,0]
++  var labelOffset = [0,0,0]
++  var labelCount  = [0,0,0]
++  for(var d=0; d<3; ++d) {
+ 
+-/**
+- * Calculates the determinant of a mat4
+- *
+- * @param {mat4} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-function determinant(a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++    //Generate label
++    labelOffset[d] = (data.length/VERTEX_SIZE)|0
++    addItem(0.5*(bounds[0][d]+bounds[1][d]), labels[d], labelFont)
++    labelCount[d] = ((data.length/VERTEX_SIZE)|0) - labelOffset[d]
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32;
++    //Generate sprites for tick marks
++    tickOffset[d] = (data.length/VERTEX_SIZE)|0
++    for(var i=0; i<ticks[d].length; ++i) {
++      if(!ticks[d][i].text) {
++        continue
++      }
++      addItem(
++        ticks[d][i].x,
++        ticks[d][i].text,
++        ticks[d][i].font || tickFont,
++        ticks[d][i].fontSize || 12)
++    }
++    tickCount[d] = ((data.length/VERTEX_SIZE)|0) - tickOffset[d]
++  }
+ 
+-    // Calculate the determinant
+-    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+-};
+-},{}],117:[function(require,module,exports){
+-module.exports = fromQuat;
++  this.buffer.update(data)
++  this.tickOffset = tickOffset
++  this.tickCount = tickCount
++  this.labelOffset = labelOffset
++  this.labelCount = labelCount
++}
+ 
+-/**
+- * Creates a matrix from a quaternion rotation.
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @returns {mat4} out
+- */
+-function fromQuat(out, q) {
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++//Draws the tick marks for an axis
++var AXIS = [0,0,0]
++proto.drawTicks = function(d, scale, angle, offset, color) {
++  if(!this.tickCount[d]) {
++    return
++  }
+ 
+-        xx = x * x2,
+-        yx = y * x2,
+-        yy = y * y2,
+-        zx = z * x2,
+-        zy = z * y2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++  var v = AXIS
++  v[0] = v[1] = v[2] = 0
++  v[d] = 1
++  this.shader.uniforms.axis = v
++  this.shader.uniforms.color = color
++  this.shader.uniforms.angle = angle
++  this.shader.uniforms.scale = scale
++  this.shader.uniforms.offset = offset
++  this.vao.draw(this.gl.TRIANGLES, this.tickCount[d], this.tickOffset[d])
++}
+ 
+-    out[0] = 1 - yy - zz;
+-    out[1] = yx + wz;
+-    out[2] = zx - wy;
+-    out[3] = 0;
++//Draws the text label for an axis
++var ZERO = [0,0,0]
++proto.drawLabel = function(d, scale, angle, offset, color) {
++  if(!this.labelCount[d]) {
++    return
++  }
++  this.shader.uniforms.axis = ZERO
++  this.shader.uniforms.color = color
++  this.shader.uniforms.angle = angle
++  this.shader.uniforms.scale = scale
++  this.shader.uniforms.offset = offset
++  this.vao.draw(this.gl.TRIANGLES, this.labelCount[d], this.labelOffset[d])
++}
+ 
+-    out[4] = yx - wz;
+-    out[5] = 1 - xx - zz;
+-    out[6] = zy + wx;
+-    out[7] = 0;
++//Releases all resources attached to this object
++proto.dispose = function() {
++  this.shader.dispose()
++  this.vao.dispose()
++  this.buffer.dispose()
++}
+ 
+-    out[8] = zx + wy;
+-    out[9] = zy - wx;
+-    out[10] = 1 - xx - yy;
+-    out[11] = 0;
++function tryVectorizeText(text, options) {
++  try {
++    return vectorizeText(text, options)
++  } catch(e) {
++    console.warn('error vectorizing text:', e)
++    return {
++      cells: [],
++      positions: []
++    }
++  }
++}
+ 
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
++function createTextSprites(
++    gl,
++    bounds,
++    labels,
++    labelFont,
++    ticks,
++    tickFont) {
+ 
+-    return out;
+-};
+-},{}],118:[function(require,module,exports){
+-module.exports = fromRotationTranslation;
++  var buffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++    { "buffer": buffer,
++      "size": 3
++    }
++  ])
+ 
+-/**
+- * Creates a matrix from a quaternion rotation and vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @returns {mat4} out
+- */
+-function fromRotationTranslation(out, q, v) {
+-    // Quaternion math
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
+ 
+-        xx = x * x2,
+-        xy = x * y2,
+-        xz = x * z2,
+-        yy = y * y2,
+-        yz = y * z2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++  var result = new TextSprites(
++    gl,
++    shader,
++    buffer,
++    vao)
+ 
+-    out[0] = 1 - (yy + zz);
+-    out[1] = xy + wz;
+-    out[2] = xz - wy;
+-    out[3] = 0;
+-    out[4] = xy - wz;
+-    out[5] = 1 - (xx + zz);
+-    out[6] = yz + wx;
+-    out[7] = 0;
+-    out[8] = xz + wy;
+-    out[9] = yz - wx;
+-    out[10] = 1 - (xx + yy);
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
+-    
+-    return out;
+-};
+-},{}],119:[function(require,module,exports){
+-module.exports = identity;
++  result.update(bounds, labels, labelFont, ticks, tickFont)
+ 
+-/**
+- * Set a mat4 to the identity matrix
+- *
+- * @param {mat4} out the receiving matrix
+- * @returns {mat4} out
+- */
+-function identity(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-};
+-},{}],120:[function(require,module,exports){
+-module.exports = invert;
++  return result
++}
+ 
+-/**
+- * Inverts a mat4
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-function invert(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++}).call(this,require('_process'))
++},{"./shaders":90,"_process":205,"gl-buffer":94,"gl-vao":148,"vectorize-text":249}],92:[function(require,module,exports){
++'use strict'
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32,
++exports.create   = defaultTicks
++exports.equal    = ticksEqual
+ 
+-        // Calculate the determinant
+-        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++function prettyPrint(spacing, i) {
++  var stepStr = spacing + ""
++  var u = stepStr.indexOf(".")
++  var sigFigs = 0
++  if(u >= 0) {
++    sigFigs = stepStr.length - u - 1
++  }
++  var shift = Math.pow(10, sigFigs)
++  var x = Math.round(spacing * i * shift)
++  var xstr = x + ""
++  if(xstr.indexOf("e") >= 0) {
++    return xstr
++  }
++  var xi = x / shift, xf = x % shift
++  if(x < 0) {
++    xi = -Math.ceil(xi)|0
++    xf = (-xf)|0
++  } else {
++    xi = Math.floor(xi)|0
++    xf = xf|0
++  }
++  var xis = "" + xi 
++  if(x < 0) {
++    xis = "-" + xis
++  }
++  if(sigFigs) {
++    var xs = "" + xf
++    while(xs.length < sigFigs) {
++      xs = "0" + xs
++    }
++    return xis + "." + xs
++  } else {
++    return xis
++  }
++}
+ 
+-    if (!det) { 
+-        return null; 
++function defaultTicks(bounds, tickSpacing) {
++  var array = []
++  for(var d=0; d<3; ++d) {
++    var ticks = []
++    var m = 0.5*(bounds[0][d]+bounds[1][d])
++    for(var t=0; t*tickSpacing[d]<=bounds[1][d]; ++t) {
++      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
+     }
+-    det = 1.0 / det;
++    for(var t=-1; t*tickSpacing[d]>=bounds[0][d]; --t) {
++      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
++    }
++    array.push(ticks)
++  }
++  return array
++}
+ 
+-    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+-    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+-    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+-    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
+-    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+-    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+-    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+-    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
+-    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+-    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+-    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+-    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
+-    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
+-    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
+-    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
+-    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
++function ticksEqual(ticksA, ticksB) {
++  for(var i=0; i<3; ++i) {
++    if(ticksA[i].length !== ticksB[i].length) {
++      return false
++    }
++    for(var j=0; j<ticksA[i].length; ++j) {
++      var a = ticksA[i][j]
++      var b = ticksB[i][j]
++      if(a.x !== b.x || a.text !== b.text) {
++        return false
++      }
++    }
++  }
++  return true
++}
++},{}],93:[function(require,module,exports){
++"use strict"
+ 
+-    return out;
+-};
+-},{}],121:[function(require,module,exports){
+-var identity = require('./identity');
++module.exports = axesProperties
+ 
+-module.exports = lookAt;
++var getPlanes   = require("extract-frustum-planes")
++var splitPoly   = require("split-polygon")
++var cubeParams  = require("./lib/cube.js")
++var m4mul       = require("gl-mat4/multiply")
++var m4transpose = require("gl-mat4/transpose")
++var v4transformMat4 = require("gl-vec4/transformMat4")
+ 
+-/**
+- * Generates a look-at matrix with the given eye position, focal point, and up axis
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {vec3} eye Position of the viewer
+- * @param {vec3} center Point the viewer is looking at
+- * @param {vec3} up vec3 pointing up
+- * @returns {mat4} out
+- */
+-function lookAt(out, eye, center, up) {
+-    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
+-        eyex = eye[0],
+-        eyey = eye[1],
+-        eyez = eye[2],
+-        upx = up[0],
+-        upy = up[1],
+-        upz = up[2],
+-        centerx = center[0],
+-        centery = center[1],
+-        centerz = center[2];
++var identity    = new Float32Array([
++    1, 0, 0, 0,
++    0, 1, 0, 0,
++    0, 0, 1, 0,
++    0, 0, 0, 1
++  ])
+ 
+-    if (Math.abs(eyex - centerx) < 0.000001 &&
+-        Math.abs(eyey - centery) < 0.000001 &&
+-        Math.abs(eyez - centerz) < 0.000001) {
+-        return identity(out);
+-    }
++var mvp         = new Float32Array(16)
+ 
+-    z0 = eyex - centerx;
+-    z1 = eyey - centery;
+-    z2 = eyez - centerz;
++function AxesRange3D(lo, hi, pixelsPerDataUnit) {
++  this.lo = lo
++  this.hi = hi
++  this.pixelsPerDataUnit = pixelsPerDataUnit
++}
+ 
+-    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
+-    z0 *= len;
+-    z1 *= len;
+-    z2 *= len;
++var SCRATCH_P = [0,0,0,1]
++var SCRATCH_Q = [0,0,0,1]
+ 
+-    x0 = upy * z2 - upz * z1;
+-    x1 = upz * z0 - upx * z2;
+-    x2 = upx * z1 - upy * z0;
+-    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
+-    if (!len) {
+-        x0 = 0;
+-        x1 = 0;
+-        x2 = 0;
+-    } else {
+-        len = 1 / len;
+-        x0 *= len;
+-        x1 *= len;
+-        x2 *= len;
++function gradient(result, M, v, width, height) {
++  for(var i=0; i<3; ++i) {
++    var p = SCRATCH_P
++    var q = SCRATCH_Q
++    for(var j=0; j<3; ++j) {
++      q[j] = p[j] = v[j]
+     }
++    q[3] = p[3] = 1
+ 
+-    y0 = z1 * x2 - z2 * x1;
+-    y1 = z2 * x0 - z0 * x2;
+-    y2 = z0 * x1 - z1 * x0;
++    q[i] += 1
++    v4transformMat4(q, q, M)
++    if(q[3] < 0) {
++      result[i] = Infinity
++    }
+ 
+-    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
+-    if (!len) {
+-        y0 = 0;
+-        y1 = 0;
+-        y2 = 0;
+-    } else {
+-        len = 1 / len;
+-        y0 *= len;
+-        y1 *= len;
+-        y2 *= len;
++    p[i] -= 1
++    v4transformMat4(p, p, M)
++    if(p[3] < 0) {
++      result[i] = Infinity
+     }
+ 
+-    out[0] = x0;
+-    out[1] = y0;
+-    out[2] = z0;
+-    out[3] = 0;
+-    out[4] = x1;
+-    out[5] = y1;
+-    out[6] = z1;
+-    out[7] = 0;
+-    out[8] = x2;
+-    out[9] = y2;
+-    out[10] = z2;
+-    out[11] = 0;
+-    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
+-    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
+-    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
+-    out[15] = 1;
++    var dx = (p[0]/p[3] - q[0]/q[3]) * width
++    var dy = (p[1]/p[3] - q[1]/q[3]) * height
+ 
+-    return out;
+-};
+-},{"./identity":119}],122:[function(require,module,exports){
+-module.exports = multiply;
++    result[i] = 0.25 * Math.sqrt(dx*dx + dy*dy)
++  }
++  return result
++}
+ 
+-/**
+- * Multiplies two mat4's
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-function multiply(out, a, b) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
++var RANGES = [
++  new AxesRange3D(Infinity, -Infinity, Infinity),
++  new AxesRange3D(Infinity, -Infinity, Infinity),
++  new AxesRange3D(Infinity, -Infinity, Infinity)
++]
+ 
+-    // Cache only the current line of the second matrix
+-    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];  
+-    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++var SCRATCH_X = [0,0,0]
+ 
+-    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
+-    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++function axesProperties(axes, camera, width, height, params) {
++  var model       = camera.model || identity
++  var view        = camera.view || identity
++  var projection  = camera.projection || identity
++  var bounds      = axes.bounds
++  var params      = params || cubeParams(model, view, projection, bounds)
++  var axis        = params.axis
++  var edges       = params.edges
+ 
+-    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
+-    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++  m4mul(mvp, view, model)
++  m4mul(mvp, projection, mvp)
+ 
+-    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
+-    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+-    return out;
+-};
+-},{}],123:[function(require,module,exports){
+-module.exports = perspective;
++  //Calculate the following properties for each axis:
++  //
++  // * lo - start of visible range for each axis in tick coordinates
++  // * hi - end of visible range for each axis in tick coordinates
++  // * ticksPerPixel - pixel density of tick marks for the axis
++  //
++  var ranges = RANGES
++  for(var i=0; i<3; ++i) {
++    ranges[i].lo = Infinity
++    ranges[i].hi = -Infinity
++    ranges[i].pixelsPerDataUnit = Infinity
++  }
+ 
+-/**
+- * Generates a perspective projection matrix with the given bounds
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {number} fovy Vertical field of view in radians
+- * @param {number} aspect Aspect ratio. typically viewport width/height
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-function perspective(out, fovy, aspect, near, far) {
+-    var f = 1.0 / Math.tan(fovy / 2),
+-        nf = 1 / (near - far);
+-    out[0] = f / aspect;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = f;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = (far + near) * nf;
+-    out[11] = -1;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = (2 * far * near) * nf;
+-    out[15] = 0;
+-    return out;
+-};
+-},{}],124:[function(require,module,exports){
+-module.exports = rotate;
++  //Compute frustum planes, intersect with box
++  var frustum = getPlanes(m4transpose(mvp, mvp))
++  m4transpose(mvp, mvp)
+ 
+-/**
+- * Rotates a mat4 by the given angle
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @param {vec3} axis the axis to rotate around
+- * @returns {mat4} out
+- */
+-function rotate(out, a, rad, axis) {
+-    var x = axis[0], y = axis[1], z = axis[2],
+-        len = Math.sqrt(x * x + y * y + z * z),
+-        s, c, t,
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23,
+-        b00, b01, b02,
+-        b10, b11, b12,
+-        b20, b21, b22;
++  //Loop over vertices of viewable box
++  for(var d=0; d<3; ++d) {
++    var u = (d+1)%3
++    var v = (d+2)%3
++    var x = SCRATCH_X
++i_loop:
++    for(var i=0; i<2; ++i) {
++      var poly = []
+ 
+-    if (Math.abs(len) < 0.000001) { return null; }
+-    
+-    len = 1 / len;
+-    x *= len;
+-    y *= len;
+-    z *= len;
++      if((axis[d] < 0) === !!i) {
++        continue
++      }
+ 
+-    s = Math.sin(rad);
+-    c = Math.cos(rad);
+-    t = 1 - c;
++      x[d] = bounds[i][d]
++      for(var j=0; j<2; ++j) {
++        x[u] = bounds[j^i][u]
++        for(var k=0; k<2; ++k) {
++          x[v] = bounds[k^j^i][v]
++          poly.push(x.slice())
++        }
++      }
++      for(var j=0; j<frustum.length; ++j) {
++        if(poly.length === 0) {
++          continue i_loop
++        }
++        poly = splitPoly.positive(poly, frustum[j])
++      }
+ 
+-    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++      //Loop over vertices of polygon to find extremal points
++      for(var j=0; j<poly.length; ++j) {
++        var v = poly[j]
++        var grad = gradient(SCRATCH_X, mvp, v, width, height)
++        for(var k=0; k<3; ++k) {
++          ranges[k].lo = Math.min(ranges[k].lo, v[k])
++          ranges[k].hi = Math.max(ranges[k].hi, v[k])
++          if(k !== d) {
++            ranges[k].pixelsPerDataUnit = Math.min(ranges[k].pixelsPerDataUnit, Math.abs(grad[k]))
++          }
++        }
++      }
++    }
++  }
+ 
+-    // Construct the elements of the rotation matrix
+-    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
+-    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
+-    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
++  return ranges
++}
+ 
+-    // Perform rotation-specific matrix multiplication
+-    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
+-    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
+-    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
+-    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
+-    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
+-    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
+-    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
+-    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
+-    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
+-    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
+-    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
+-    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
++},{"./lib/cube.js":88,"extract-frustum-planes":81,"gl-mat4/multiply":113,"gl-mat4/transpose":121,"gl-vec4/transformMat4":154,"split-polygon":236}],94:[function(require,module,exports){
++"use strict"
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
+-    return out;
+-};
+-},{}],125:[function(require,module,exports){
+-module.exports = rotateX;
++var pool = require("typedarray-pool")
++var ops = require("ndarray-ops")
++var ndarray = require("ndarray")
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-function rotateX(out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++var SUPPORTED_TYPES = [
++  "uint8",
++  "uint8_clamped",
++  "uint16",
++  "uint32",
++  "int8",
++  "int16",
++  "int32",
++  "float32" ]
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[0]  = a[0];
+-        out[1]  = a[1];
+-        out[2]  = a[2];
+-        out[3]  = a[3];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++function GLBuffer(gl, type, handle, length, usage) {
++  this.gl = gl
++  this.type = type
++  this.handle = handle
++  this.length = length
++  this.usage = usage
++}
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[4] = a10 * c + a20 * s;
+-    out[5] = a11 * c + a21 * s;
+-    out[6] = a12 * c + a22 * s;
+-    out[7] = a13 * c + a23 * s;
+-    out[8] = a20 * c - a10 * s;
+-    out[9] = a21 * c - a11 * s;
+-    out[10] = a22 * c - a12 * s;
+-    out[11] = a23 * c - a13 * s;
+-    return out;
+-};
+-},{}],126:[function(require,module,exports){
+-module.exports = rotateY;
++var proto = GLBuffer.prototype
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-function rotateY(out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++proto.bind = function() {
++  this.gl.bindBuffer(this.type, this.handle)
++}
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[4]  = a[4];
+-        out[5]  = a[5];
+-        out[6]  = a[6];
+-        out[7]  = a[7];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++proto.unbind = function() {
++  this.gl.bindBuffer(this.type, null)
++}
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c - a20 * s;
+-    out[1] = a01 * c - a21 * s;
+-    out[2] = a02 * c - a22 * s;
+-    out[3] = a03 * c - a23 * s;
+-    out[8] = a00 * s + a20 * c;
+-    out[9] = a01 * s + a21 * c;
+-    out[10] = a02 * s + a22 * c;
+-    out[11] = a03 * s + a23 * c;
+-    return out;
+-};
+-},{}],127:[function(require,module,exports){
+-module.exports = rotateZ;
++proto.dispose = function() {
++  this.gl.deleteBuffer(this.handle)
++}
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-function rotateZ(out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7];
++function updateTypeArray(gl, type, len, usage, data, offset) {
++  var dataLen = data.length * data.BYTES_PER_ELEMENT
++  if(offset < 0) {
++    gl.bufferData(type, data, usage)
++    return dataLen
++  }
++  if(dataLen + offset > len) {
++    throw new Error("gl-buffer: If resizing buffer, must not specify offset")
++  }
++  gl.bufferSubData(type, offset, data)
++  return len
++}
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[8]  = a[8];
+-        out[9]  = a[9];
+-        out[10] = a[10];
+-        out[11] = a[11];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
++function makeScratchTypeArray(array, dtype) {
++  var res = pool.malloc(array.length, dtype)
++  var n = array.length
++  for(var i=0; i<n; ++i) {
++    res[i] = array[i]
++  }
++  return res
++}
++
++function isPacked(shape, stride) {
++  var n = 1
++  for(var i=stride.length-1; i>=0; --i) {
++    if(stride[i] !== n) {
++      return false
++    }
++    n *= shape[i]
++  }
++  return true
++}
++
++proto.update = function(array, offset) {
++  if(typeof offset !== "number") {
++    offset = -1
++  }
++  this.bind()
++  if(typeof array === "object" && typeof array.shape !== "undefined") { //ndarray
++    var dtype = array.dtype
++    if(SUPPORTED_TYPES.indexOf(dtype) < 0) {
++      dtype = "float32"
++    }
++    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
++      var ext = gl.getExtension('OES_element_index_uint')
++      if(ext && dtype !== "uint16") {
++        dtype = "uint32"
++      } else {
++        dtype = "uint16"
++      }
++    }
++    if(dtype === array.dtype && isPacked(array.shape, array.stride)) {
++      if(array.offset === 0 && array.data.length === array.shape[0]) {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data, offset)
++      } else {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data.subarray(array.offset, array.shape[0]), offset)
++      }
++    } else {
++      var tmp = pool.malloc(array.size, dtype)
++      var ndt = ndarray(tmp, array.shape)
++      ops.assign(ndt, array)
++      if(offset < 0) {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp, offset)
++      } else {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp.subarray(0, array.size), offset)
++      }
++      pool.free(tmp)
++    }
++  } else if(Array.isArray(array)) { //Vanilla array
++    var t
++    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
++      t = makeScratchTypeArray(array, "uint16")
++    } else {
++      t = makeScratchTypeArray(array, "float32")
++    }
++    if(offset < 0) {
++      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t, offset)
++    } else {
++      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t.subarray(0, array.length), offset)
++    }
++    pool.free(t)
++  } else if(typeof array === "object" && typeof array.length === "number") { //Typed array
++    this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array, offset)
++  } else if(typeof array === "number" || array === undefined) { //Number/default
++    if(offset >= 0) {
++      throw new Error("gl-buffer: Cannot specify offset when resizing buffer")
+     }
++    array = array | 0
++    if(array <= 0) {
++      array = 1
++    }
++    this.gl.bufferData(this.type, array|0, this.usage)
++    this.length = array
++  } else { //Error, case should not happen
++    throw new Error("gl-buffer: Invalid data type")
++  }
++}
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c + a10 * s;
+-    out[1] = a01 * c + a11 * s;
+-    out[2] = a02 * c + a12 * s;
+-    out[3] = a03 * c + a13 * s;
+-    out[4] = a10 * c - a00 * s;
+-    out[5] = a11 * c - a01 * s;
+-    out[6] = a12 * c - a02 * s;
+-    out[7] = a13 * c - a03 * s;
+-    return out;
+-};
+-},{}],128:[function(require,module,exports){
+-module.exports = scale;
++function createBuffer(gl, data, type, usage) {
++  type = type || gl.ARRAY_BUFFER
++  usage = usage || gl.DYNAMIC_DRAW
++  if(type !== gl.ARRAY_BUFFER && type !== gl.ELEMENT_ARRAY_BUFFER) {
++    throw new Error("gl-buffer: Invalid type for webgl buffer, must be either gl.ARRAY_BUFFER or gl.ELEMENT_ARRAY_BUFFER")
++  }
++  if(usage !== gl.DYNAMIC_DRAW && usage !== gl.STATIC_DRAW && usage !== gl.STREAM_DRAW) {
++    throw new Error("gl-buffer: Invalid usage for buffer, must be either gl.DYNAMIC_DRAW, gl.STATIC_DRAW or gl.STREAM_DRAW")
++  }
++  var handle = gl.createBuffer()
++  var result = new GLBuffer(gl, type, handle, 0, usage)
++  result.update(data)
++  return result
++}
+ 
+-/**
+- * Scales the mat4 by the dimensions in the given vec3
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- **/
+-function scale(out, a, v) {
+-    var x = v[0], y = v[1], z = v[2];
++module.exports = createBuffer
+ 
+-    out[0] = a[0] * x;
+-    out[1] = a[1] * x;
+-    out[2] = a[2] * x;
+-    out[3] = a[3] * x;
+-    out[4] = a[4] * y;
+-    out[5] = a[5] * y;
+-    out[6] = a[6] * y;
+-    out[7] = a[7] * y;
+-    out[8] = a[8] * z;
+-    out[9] = a[9] * z;
+-    out[10] = a[10] * z;
+-    out[11] = a[11] * z;
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
+-},{}],129:[function(require,module,exports){
+-module.exports = translate;
++},{"ndarray":191,"ndarray-ops":185,"typedarray-pool":246}],95:[function(require,module,exports){
++module.exports = {
++  0: 'NONE',
++  1: 'ONE',
++  2: 'LINE_LOOP',
++  3: 'LINE_STRIP',
++  4: 'TRIANGLES',
++  5: 'TRIANGLE_STRIP',
++  6: 'TRIANGLE_FAN',
++  256: 'DEPTH_BUFFER_BIT',
++  512: 'NEVER',
++  513: 'LESS',
++  514: 'EQUAL',
++  515: 'LEQUAL',
++  516: 'GREATER',
++  517: 'NOTEQUAL',
++  518: 'GEQUAL',
++  519: 'ALWAYS',
++  768: 'SRC_COLOR',
++  769: 'ONE_MINUS_SRC_COLOR',
++  770: 'SRC_ALPHA',
++  771: 'ONE_MINUS_SRC_ALPHA',
++  772: 'DST_ALPHA',
++  773: 'ONE_MINUS_DST_ALPHA',
++  774: 'DST_COLOR',
++  775: 'ONE_MINUS_DST_COLOR',
++  776: 'SRC_ALPHA_SATURATE',
++  1024: 'STENCIL_BUFFER_BIT',
++  1028: 'FRONT',
++  1029: 'BACK',
++  1032: 'FRONT_AND_BACK',
++  1280: 'INVALID_ENUM',
++  1281: 'INVALID_VALUE',
++  1282: 'INVALID_OPERATION',
++  1285: 'OUT_OF_MEMORY',
++  1286: 'INVALID_FRAMEBUFFER_OPERATION',
++  2304: 'CW',
++  2305: 'CCW',
++  2849: 'LINE_WIDTH',
++  2884: 'CULL_FACE',
++  2885: 'CULL_FACE_MODE',
++  2886: 'FRONT_FACE',
++  2928: 'DEPTH_RANGE',
++  2929: 'DEPTH_TEST',
++  2930: 'DEPTH_WRITEMASK',
++  2931: 'DEPTH_CLEAR_VALUE',
++  2932: 'DEPTH_FUNC',
++  2960: 'STENCIL_TEST',
++  2961: 'STENCIL_CLEAR_VALUE',
++  2962: 'STENCIL_FUNC',
++  2963: 'STENCIL_VALUE_MASK',
++  2964: 'STENCIL_FAIL',
++  2965: 'STENCIL_PASS_DEPTH_FAIL',
++  2966: 'STENCIL_PASS_DEPTH_PASS',
++  2967: 'STENCIL_REF',
++  2968: 'STENCIL_WRITEMASK',
++  2978: 'VIEWPORT',
++  3024: 'DITHER',
++  3042: 'BLEND',
++  3088: 'SCISSOR_BOX',
++  3089: 'SCISSOR_TEST',
++  3106: 'COLOR_CLEAR_VALUE',
++  3107: 'COLOR_WRITEMASK',
++  3317: 'UNPACK_ALIGNMENT',
++  3333: 'PACK_ALIGNMENT',
++  3379: 'MAX_TEXTURE_SIZE',
++  3386: 'MAX_VIEWPORT_DIMS',
++  3408: 'SUBPIXEL_BITS',
++  3410: 'RED_BITS',
++  3411: 'GREEN_BITS',
++  3412: 'BLUE_BITS',
++  3413: 'ALPHA_BITS',
++  3414: 'DEPTH_BITS',
++  3415: 'STENCIL_BITS',
++  3553: 'TEXTURE_2D',
++  4352: 'DONT_CARE',
++  4353: 'FASTEST',
++  4354: 'NICEST',
++  5120: 'BYTE',
++  5121: 'UNSIGNED_BYTE',
++  5122: 'SHORT',
++  5123: 'UNSIGNED_SHORT',
++  5124: 'INT',
++  5125: 'UNSIGNED_INT',
++  5126: 'FLOAT',
++  5386: 'INVERT',
++  5890: 'TEXTURE',
++  6401: 'STENCIL_INDEX',
++  6402: 'DEPTH_COMPONENT',
++  6406: 'ALPHA',
++  6407: 'RGB',
++  6408: 'RGBA',
++  6409: 'LUMINANCE',
++  6410: 'LUMINANCE_ALPHA',
++  7680: 'KEEP',
++  7681: 'REPLACE',
++  7682: 'INCR',
++  7683: 'DECR',
++  7936: 'VENDOR',
++  7937: 'RENDERER',
++  7938: 'VERSION',
++  9728: 'NEAREST',
++  9729: 'LINEAR',
++  9984: 'NEAREST_MIPMAP_NEAREST',
++  9985: 'LINEAR_MIPMAP_NEAREST',
++  9986: 'NEAREST_MIPMAP_LINEAR',
++  9987: 'LINEAR_MIPMAP_LINEAR',
++  10240: 'TEXTURE_MAG_FILTER',
++  10241: 'TEXTURE_MIN_FILTER',
++  10242: 'TEXTURE_WRAP_S',
++  10243: 'TEXTURE_WRAP_T',
++  10497: 'REPEAT',
++  10752: 'POLYGON_OFFSET_UNITS',
++  16384: 'COLOR_BUFFER_BIT',
++  32769: 'CONSTANT_COLOR',
++  32770: 'ONE_MINUS_CONSTANT_COLOR',
++  32771: 'CONSTANT_ALPHA',
++  32772: 'ONE_MINUS_CONSTANT_ALPHA',
++  32773: 'BLEND_COLOR',
++  32774: 'FUNC_ADD',
++  32777: 'BLEND_EQUATION_RGB',
++  32778: 'FUNC_SUBTRACT',
++  32779: 'FUNC_REVERSE_SUBTRACT',
++  32819: 'UNSIGNED_SHORT_4_4_4_4',
++  32820: 'UNSIGNED_SHORT_5_5_5_1',
++  32823: 'POLYGON_OFFSET_FILL',
++  32824: 'POLYGON_OFFSET_FACTOR',
++  32854: 'RGBA4',
++  32855: 'RGB5_A1',
++  32873: 'TEXTURE_BINDING_2D',
++  32926: 'SAMPLE_ALPHA_TO_COVERAGE',
++  32928: 'SAMPLE_COVERAGE',
++  32936: 'SAMPLE_BUFFERS',
++  32937: 'SAMPLES',
++  32938: 'SAMPLE_COVERAGE_VALUE',
++  32939: 'SAMPLE_COVERAGE_INVERT',
++  32968: 'BLEND_DST_RGB',
++  32969: 'BLEND_SRC_RGB',
++  32970: 'BLEND_DST_ALPHA',
++  32971: 'BLEND_SRC_ALPHA',
++  33071: 'CLAMP_TO_EDGE',
++  33170: 'GENERATE_MIPMAP_HINT',
++  33189: 'DEPTH_COMPONENT16',
++  33306: 'DEPTH_STENCIL_ATTACHMENT',
++  33635: 'UNSIGNED_SHORT_5_6_5',
++  33648: 'MIRRORED_REPEAT',
++  33901: 'ALIASED_POINT_SIZE_RANGE',
++  33902: 'ALIASED_LINE_WIDTH_RANGE',
++  33984: 'TEXTURE0',
++  33985: 'TEXTURE1',
++  33986: 'TEXTURE2',
++  33987: 'TEXTURE3',
++  33988: 'TEXTURE4',
++  33989: 'TEXTURE5',
++  33990: 'TEXTURE6',
++  33991: 'TEXTURE7',
++  33992: 'TEXTURE8',
++  33993: 'TEXTURE9',
++  33994: 'TEXTURE10',
++  33995: 'TEXTURE11',
++  33996: 'TEXTURE12',
++  33997: 'TEXTURE13',
++  33998: 'TEXTURE14',
++  33999: 'TEXTURE15',
++  34000: 'TEXTURE16',
++  34001: 'TEXTURE17',
++  34002: 'TEXTURE18',
++  34003: 'TEXTURE19',
++  34004: 'TEXTURE20',
++  34005: 'TEXTURE21',
++  34006: 'TEXTURE22',
++  34007: 'TEXTURE23',
++  34008: 'TEXTURE24',
++  34009: 'TEXTURE25',
++  34010: 'TEXTURE26',
++  34011: 'TEXTURE27',
++  34012: 'TEXTURE28',
++  34013: 'TEXTURE29',
++  34014: 'TEXTURE30',
++  34015: 'TEXTURE31',
++  34016: 'ACTIVE_TEXTURE',
++  34024: 'MAX_RENDERBUFFER_SIZE',
++  34041: 'DEPTH_STENCIL',
++  34055: 'INCR_WRAP',
++  34056: 'DECR_WRAP',
++  34067: 'TEXTURE_CUBE_MAP',
++  34068: 'TEXTURE_BINDING_CUBE_MAP',
++  34069: 'TEXTURE_CUBE_MAP_POSITIVE_X',
++  34070: 'TEXTURE_CUBE_MAP_NEGATIVE_X',
++  34071: 'TEXTURE_CUBE_MAP_POSITIVE_Y',
++  34072: 'TEXTURE_CUBE_MAP_NEGATIVE_Y',
++  34073: 'TEXTURE_CUBE_MAP_POSITIVE_Z',
++  34074: 'TEXTURE_CUBE_MAP_NEGATIVE_Z',
++  34076: 'MAX_CUBE_MAP_TEXTURE_SIZE',
++  34338: 'VERTEX_ATTRIB_ARRAY_ENABLED',
++  34339: 'VERTEX_ATTRIB_ARRAY_SIZE',
++  34340: 'VERTEX_ATTRIB_ARRAY_STRIDE',
++  34341: 'VERTEX_ATTRIB_ARRAY_TYPE',
++  34342: 'CURRENT_VERTEX_ATTRIB',
++  34373: 'VERTEX_ATTRIB_ARRAY_POINTER',
++  34466: 'NUM_COMPRESSED_TEXTURE_FORMATS',
++  34467: 'COMPRESSED_TEXTURE_FORMATS',
++  34660: 'BUFFER_SIZE',
++  34661: 'BUFFER_USAGE',
++  34816: 'STENCIL_BACK_FUNC',
++  34817: 'STENCIL_BACK_FAIL',
++  34818: 'STENCIL_BACK_PASS_DEPTH_FAIL',
++  34819: 'STENCIL_BACK_PASS_DEPTH_PASS',
++  34877: 'BLEND_EQUATION_ALPHA',
++  34921: 'MAX_VERTEX_ATTRIBS',
++  34922: 'VERTEX_ATTRIB_ARRAY_NORMALIZED',
++  34930: 'MAX_TEXTURE_IMAGE_UNITS',
++  34962: 'ARRAY_BUFFER',
++  34963: 'ELEMENT_ARRAY_BUFFER',
++  34964: 'ARRAY_BUFFER_BINDING',
++  34965: 'ELEMENT_ARRAY_BUFFER_BINDING',
++  34975: 'VERTEX_ATTRIB_ARRAY_BUFFER_BINDING',
++  35040: 'STREAM_DRAW',
++  35044: 'STATIC_DRAW',
++  35048: 'DYNAMIC_DRAW',
++  35632: 'FRAGMENT_SHADER',
++  35633: 'VERTEX_SHADER',
++  35660: 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
++  35661: 'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
++  35663: 'SHADER_TYPE',
++  35664: 'FLOAT_VEC2',
++  35665: 'FLOAT_VEC3',
++  35666: 'FLOAT_VEC4',
++  35667: 'INT_VEC2',
++  35668: 'INT_VEC3',
++  35669: 'INT_VEC4',
++  35670: 'BOOL',
++  35671: 'BOOL_VEC2',
++  35672: 'BOOL_VEC3',
++  35673: 'BOOL_VEC4',
++  35674: 'FLOAT_MAT2',
++  35675: 'FLOAT_MAT3',
++  35676: 'FLOAT_MAT4',
++  35678: 'SAMPLER_2D',
++  35680: 'SAMPLER_CUBE',
++  35712: 'DELETE_STATUS',
++  35713: 'COMPILE_STATUS',
++  35714: 'LINK_STATUS',
++  35715: 'VALIDATE_STATUS',
++  35716: 'INFO_LOG_LENGTH',
++  35717: 'ATTACHED_SHADERS',
++  35718: 'ACTIVE_UNIFORMS',
++  35719: 'ACTIVE_UNIFORM_MAX_LENGTH',
++  35720: 'SHADER_SOURCE_LENGTH',
++  35721: 'ACTIVE_ATTRIBUTES',
++  35722: 'ACTIVE_ATTRIBUTE_MAX_LENGTH',
++  35724: 'SHADING_LANGUAGE_VERSION',
++  35725: 'CURRENT_PROGRAM',
++  36003: 'STENCIL_BACK_REF',
++  36004: 'STENCIL_BACK_VALUE_MASK',
++  36005: 'STENCIL_BACK_WRITEMASK',
++  36006: 'FRAMEBUFFER_BINDING',
++  36007: 'RENDERBUFFER_BINDING',
++  36048: 'FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE',
++  36049: 'FRAMEBUFFER_ATTACHMENT_OBJECT_NAME',
++  36050: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL',
++  36051: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
++  36053: 'FRAMEBUFFER_COMPLETE',
++  36054: 'FRAMEBUFFER_INCOMPLETE_ATTACHMENT',
++  36055: 'FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT',
++  36057: 'FRAMEBUFFER_INCOMPLETE_DIMENSIONS',
++  36061: 'FRAMEBUFFER_UNSUPPORTED',
++  36064: 'COLOR_ATTACHMENT0',
++  36096: 'DEPTH_ATTACHMENT',
++  36128: 'STENCIL_ATTACHMENT',
++  36160: 'FRAMEBUFFER',
++  36161: 'RENDERBUFFER',
++  36162: 'RENDERBUFFER_WIDTH',
++  36163: 'RENDERBUFFER_HEIGHT',
++  36164: 'RENDERBUFFER_INTERNAL_FORMAT',
++  36168: 'STENCIL_INDEX8',
++  36176: 'RENDERBUFFER_RED_SIZE',
++  36177: 'RENDERBUFFER_GREEN_SIZE',
++  36178: 'RENDERBUFFER_BLUE_SIZE',
++  36179: 'RENDERBUFFER_ALPHA_SIZE',
++  36180: 'RENDERBUFFER_DEPTH_SIZE',
++  36181: 'RENDERBUFFER_STENCIL_SIZE',
++  36194: 'RGB565',
++  36336: 'LOW_FLOAT',
++  36337: 'MEDIUM_FLOAT',
++  36338: 'HIGH_FLOAT',
++  36339: 'LOW_INT',
++  36340: 'MEDIUM_INT',
++  36341: 'HIGH_INT',
++  36346: 'SHADER_COMPILER',
++  36347: 'MAX_VERTEX_UNIFORM_VECTORS',
++  36348: 'MAX_VARYING_VECTORS',
++  36349: 'MAX_FRAGMENT_UNIFORM_VECTORS',
++  37440: 'UNPACK_FLIP_Y_WEBGL',
++  37441: 'UNPACK_PREMULTIPLY_ALPHA_WEBGL',
++  37442: 'CONTEXT_LOST_WEBGL',
++  37443: 'UNPACK_COLORSPACE_CONVERSION_WEBGL',
++  37444: 'BROWSER_DEFAULT_WEBGL'
++}
+ 
+-/**
+- * Translate a mat4 by the given vector
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
+- */
+-function translate(out, a, v) {
+-    var x = v[0], y = v[1], z = v[2],
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23;
++},{}],96:[function(require,module,exports){
++var gl10 = require('./1.0/numbers')
+ 
+-    if (a === out) {
+-        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
+-        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
+-        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
+-        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
+-    } else {
+-        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++module.exports = function lookupConstant (number) {
++  return gl10[number]
++}
+ 
+-        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
+-        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
+-        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
++},{"./1.0/numbers":95}],97:[function(require,module,exports){
++'use strict'
+ 
+-        out[12] = a00 * x + a10 * y + a20 * z + a[12];
+-        out[13] = a01 * x + a11 * y + a21 * z + a[13];
+-        out[14] = a02 * x + a12 * y + a22 * z + a[14];
+-        out[15] = a03 * x + a13 * y + a23 * z + a[15];
+-    }
++module.exports = createErrorBars
+ 
+-    return out;
+-};
+-},{}],130:[function(require,module,exports){
+-module.exports = transpose;
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var createShader  = require('./shaders/index')
+ 
+-/**
+- * Transpose the values of a mat4
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-function transpose(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a01 = a[1], a02 = a[2], a03 = a[3],
+-            a12 = a[6], a13 = a[7],
+-            a23 = a[11];
++var IDENTITY = [1,0,0,0,
++                0,1,0,0,
++                0,0,1,0,
++                0,0,0,1]
+ 
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a01;
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a02;
+-        out[9] = a12;
+-        out[11] = a[14];
+-        out[12] = a03;
+-        out[13] = a13;
+-        out[14] = a23;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a[1];
+-        out[5] = a[5];
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a[2];
+-        out[9] = a[6];
+-        out[10] = a[10];
+-        out[11] = a[14];
+-        out[12] = a[3];
+-        out[13] = a[7];
+-        out[14] = a[11];
+-        out[15] = a[15];
+-    }
+-    
+-    return out;
+-};
+-},{}],131:[function(require,module,exports){
+-'use strict'
++function ErrorBars(gl, buffer, vao, shader) {
++  this.gl           = gl
++  this.shader       = shader
++  this.buffer       = buffer
++  this.vao          = vao
++  this.pixelRatio   = 1
++  this.bounds       = [[ Infinity, Infinity, Infinity], [-Infinity,-Infinity,-Infinity]]
++  this.clipBounds   = [[-Infinity,-Infinity,-Infinity], [ Infinity, Infinity, Infinity]]
++  this.lineWidth    = [1,1,1]
++  this.capSize      = [10,10,10]
++  this.lineCount    = [0,0,0]
++  this.lineOffset   = [0,0,0]
++  this.opacity      = 1
++}
+ 
+-var barycentric            = require('barycentric')
+-var closestPointToTriangle = require('polytope-closest-point/lib/closest_point_2d.js')
++var proto = ErrorBars.prototype
+ 
+-module.exports = closestPointToPickLocation
++proto.isOpaque = function() {
++  return this.opacity >= 1
++}
+ 
+-function xformMatrix(m, v) {
+-  var out = [0,0,0,0]
+-  for(var i=0; i<4; ++i) {
+-    for(var j=0; j<4; ++j) {
+-      out[j] += m[4*i + j] * v[i]
+-    }
+-  }
+-  return out
++proto.isTransparent = function() {
++  return this.opacity < 1
+ }
+ 
+-function projectVertex(v, model, view, projection, resolution) {
+-  var p = xformMatrix(projection,
+-            xformMatrix(view,
+-              xformMatrix(model, [v[0], v[1], v[2], 1])))
++proto.drawTransparent = proto.draw = function(cameraParams) {
++  var gl = this.gl
++  var uniforms        = this.shader.uniforms
++
++  this.shader.bind()
++  var view       = uniforms.view       = cameraParams.view       || IDENTITY
++  var projection = uniforms.projection = cameraParams.projection || IDENTITY
++  uniforms.model      = cameraParams.model      || IDENTITY
++  uniforms.clipBounds = this.clipBounds
++  uniforms.opacity    = this.opacity
++
++
++  var cx = view[12]
++  var cy = view[13]
++  var cz = view[14]
++  var cw = view[15]
++  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
++
++
++  this.vao.bind()
+   for(var i=0; i<3; ++i) {
+-    p[i] /= p[3]
++    gl.lineWidth(this.lineWidth[i])
++    uniforms.capSize = this.capSize[i] * pixelScaleF
++    gl.drawArrays(gl.LINES, this.lineOffset[i], this.lineCount[i])
+   }
+-  return [ 0.5 * resolution[0] * (1.0+p[0]), 0.5 * resolution[1] * (1.0-p[1]) ]
++  this.vao.unbind()
+ }
+ 
+-function barycentricCoord(simplex, point) {
+-  if(simplex.length === 2) {
+-    var d0 = 0.0
+-    var d1 = 0.0
+-    for(var i=0; i<2; ++i) {
+-      d0 += Math.pow(point[i] - simplex[0][i], 2)
+-      d1 += Math.pow(point[i] - simplex[1][i], 2)
+-    }
+-    d0 = Math.sqrt(d0)
+-    d1 = Math.sqrt(d1)
+-    if(d0+d1 < 1e-6) {
+-      return [1,0]
+-    }
+-    return [d1/(d0+d1),d0/(d1+d0)]
+-  } else if(simplex.length === 3) {
+-    var closestPoint = [0,0]
+-    closestPointToTriangle(simplex[0], simplex[1], simplex[2], point, closestPoint)
+-    return barycentric(simplex, closestPoint)
++function updateBounds(bounds, point) {
++  for(var i=0; i<3; ++i) {
++    bounds[0][i] = Math.min(bounds[0][i], point[i])
++    bounds[1][i] = Math.max(bounds[1][i], point[i])
+   }
+-  return []
+ }
+ 
+-function interpolate(simplex, weights) {
+-  var result = [0,0,0]
+-  for(var i=0; i<simplex.length; ++i) {
+-    var p = simplex[i]
+-    var w = weights[i]
+-    for(var j=0; j<3; ++j) {
+-      result[j] += w * p[j]
++var FACE_TABLE = (function(){
++  var table = new Array(3)
++  for(var d=0; d<3; ++d) {
++    var row = []
++    for(var j=1; j<=2; ++j) {
++      for(var s=-1; s<=1; s+=2) {
++        var u = (j+d) % 3
++        var y = [0,0,0]
++        y[u] = s
++        row.push(y)
++      }
+     }
++    table[d] = row
+   }
+-  return result
+-}
++  return table
++})()
+ 
+-function closestPointToPickLocation(simplex, pixelCoord, model, view, projection, resolution) {
+-  if(simplex.length === 1) {
+-    return [0, simplex[0].slice()]
+-  }
+-  var simplex2D = new Array(simplex.length)
+-  for(var i=0; i<simplex.length; ++i) {
+-    simplex2D[i] = projectVertex(simplex[i], model, view, projection, resolution);
++
++function emitFace(verts, x, c, d) {
++  var offsets = FACE_TABLE[d]
++  for(var i=0; i<offsets.length; ++i) {
++    var o = offsets[i]
++    verts.push(x[0], x[1], x[2],
++               c[0], c[1], c[2], c[3],
++               o[0], o[1], o[2])
+   }
++  return offsets.length
++}
+ 
+-  var closestIndex = 0
+-  var closestDist  = Infinity
+-  for(var i=0; i<simplex2D.length; ++i) {
+-    var d2 = 0.0
+-    for(var j=0; j<2; ++j) {
+-      d2 += Math.pow(simplex2D[i][j] - pixelCoord[j], 2)
+-    }
+-    if(d2 < closestDist) {
+-      closestDist  = d2
+-      closestIndex = i
++proto.update = function(options) {
++  options = options || {}
++
++  if('lineWidth' in options) {
++    this.lineWidth = options.lineWidth
++    if(!Array.isArray(this.lineWidth)) {
++      this.lineWidth = [this.lineWidth, this.lineWidth, this.lineWidth]
+     }
+   }
+-
+-  var weights = barycentricCoord(simplex2D, pixelCoord)
+-  var s = 0.0
+-  for(var i=0; i<3; ++i) {
+-    if(weights[i] < -0.001 ||
+-       weights[i] > 1.0001) {
+-      return null
++  if('capSize' in options) {
++    this.capSize = options.capSize
++    if(!Array.isArray(this.capSize)) {
++      this.capSize = [this.capSize, this.capSize, this.capSize]
+     }
+-    s += weights[i]
+   }
+-  if(Math.abs(s - 1.0) > 0.001) {
+-    return null
++  if('opacity' in options) {
++    this.opacity = options.opacity
+   }
+-  return [closestIndex, interpolate(simplex, weights), weights]
+-}
+-},{"barycentric":134,"polytope-closest-point/lib/closest_point_2d.js":136}],132:[function(require,module,exports){
+ 
++  var color    = options.color || [[0,0,0],[0,0,0],[0,0,0]]
++  var position = options.position
++  var error    = options.error
++  if(!Array.isArray(color[0])) {
++    color = [color,color,color]
++  }
+ 
+-var triVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, normal;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model\n           , view\n           , projection;\nuniform vec3 eyePosition\n           , lightPosition;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec4 m_position  = model * vec4(position, 1.0);\n  vec4 t_position  = view * m_position;\n  gl_Position      = projection * t_position;\n  f_color          = color;\n  f_normal         = normal;\n  f_data           = position;\n  f_eyeDirection   = eyePosition   - position;\n  f_lightDirection = lightPosition - position;\n  f_uv             = uv;\n}"
+-var triFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat cookTorranceSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness,\n  float fresnel) {\n\n  float VdotN = max(dot(viewDirection, surfaceNormal), 0.0);\n  float LdotN = max(dot(lightDirection, surfaceNormal), 0.0);\n\n  //Half angle vector\n  vec3 H = normalize(lightDirection + viewDirection);\n\n  //Geometric term\n  float NdotH = max(dot(surfaceNormal, H), 0.0);\n  float VdotH = max(dot(viewDirection, H), 0.000001);\n  float LdotH = max(dot(lightDirection, H), 0.000001);\n  float G1 = (2.0 * NdotH * VdotN) / VdotH;\n  float G2 = (2.0 * NdotH * LdotN) / LdotH;\n  float G = min(1.0, min(G1, G2));\n  \n  //Distribution term\n  float D = beckmannDistribution_2_0(NdotH, roughness);\n\n  //Fresnel term\n  float F = pow(1.0 - VdotN, fresnel);\n\n  //Multiply terms and done\n  return  G * F * D / max(3.14159265 * VdotN, 0.000001);\n}\n\n\n\nuniform vec3 clipBounds[2];\nuniform float roughness\n            , fresnel\n            , kambient\n            , kdiffuse\n            , kspecular\n            , opacity;\nuniform sampler2D texture;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(f_normal);\n  vec3 L = normalize(f_lightDirection);\n  vec3 V = normalize(f_eyeDirection);\n  \n  if(!gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = cookTorranceSpecular_1_1(L, V, N, roughness, fresnel);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = f_color * texture2D(texture, f_uv);\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = litColor * opacity;\n}"
+-var edgeVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model, view, projection;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_color = color;\n  f_data  = position;\n  f_uv    = uv;\n}"
+-var edgeFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 clipBounds[2];\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
+-var pointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\nattribute float pointSize;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position = projection * view * model * vec4(position, 1.0);\n  }\n  gl_PointSize = pointSize;\n  f_color = color;\n  f_uv = uv;\n}"
+-var pointFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec2 pointR = gl_PointCoord.xy - vec2(0.5,0.5);\n  if(dot(pointR, pointR) > 0.25) {\n    discard;\n  }\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
+-var pickVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_id        = id;\n  f_position  = position;\n}"
+-var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3  clipBounds[2];\nuniform float pickId;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(f_position, clipBounds[0])) || \n     any(greaterThan(f_position, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId, f_id.xyz);\n}"
+-var pickPointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3  position;\nattribute float pointSize;\nattribute vec4  id;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position  = projection * view * model * vec4(position, 1.0);\n    gl_PointSize = pointSize;\n  }\n  f_id         = id;\n  f_position   = position;\n}"
+-var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n}"
+-var contourFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 contourColor;\n\nvoid main() {\n  gl_FragColor = vec4(contourColor,1);\n}\n"
++  if(position && error) {
+ 
+-exports.meshShader = {
+-  vertex:   triVertSrc,
+-  fragment: triFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'},
+-    {name: 'color', type: 'vec4'},
+-    {name: 'uv', type: 'vec2'}
+-  ]
+-}
+-exports.wireShader = {
+-  vertex:   edgeVertSrc,
+-  fragment: edgeFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'color', type: 'vec4'},
+-    {name: 'uv', type: 'vec2'}
+-  ]
++    var verts       = []
++    var n           = position.length
++    var vertexCount = 0
++    this.bounds     = [[ Infinity, Infinity, Infinity],
++                       [-Infinity,-Infinity,-Infinity]]
++    this.lineCount  = [0,0,0]
++
++    //Build geometry for lines
++    for(var j=0; j<3; ++j) {
++      this.lineOffset[j] = vertexCount
++
++i_loop:
++      for(var i=0; i<n; ++i) {
++        var p = position[i]
++
++        for(var k=0; k<3; ++k) {
++          if(isNaN(p[k]) || !isFinite(p[k])) {
++            continue i_loop
++          }
++        }
++
++        var e = error[i]
++        var c = color[j]
++        if(Array.isArray(c[0])) {
++          c = color[i]
++        }
++        if(c.length === 3) {
++          c = [c[0], c[1], c[2], 1]
++        }
++        if(isNaN(e[0][j]) || isNaN(e[1][j])) {
++          continue
++        }
++        if(e[0][j] < 0) {
++          var x = p.slice()
++          x[j] += e[0][j]
++          verts.push(p[0], p[1], p[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0,
++                     x[0], x[1], x[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0)
++          updateBounds(this.bounds, x)
++          vertexCount += 2 + emitFace(verts, x, c, j)
++        }
++        if(e[1][j] > 0) {
++          var x = p.slice()
++          x[j] += e[1][j]
++          verts.push(p[0], p[1], p[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0,
++                     x[0], x[1], x[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0)
++          updateBounds(this.bounds, x)
++          vertexCount += 2 + emitFace(verts, x, c, j)
++        }
++      }
++      this.lineCount[j] = vertexCount - this.lineOffset[j]
++    }
++    this.buffer.update(verts)
++  }
+ }
+-exports.pointShader = {
+-  vertex:   pointVertSrc,
+-  fragment: pointFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'color', type: 'vec4'},
+-    {name: 'uv', type: 'vec2'},
+-    {name: 'pointSize', type: 'float'}
+-  ]
++
++proto.dispose = function() {
++  this.shader.dispose()
++  this.buffer.dispose()
++  this.vao.dispose()
+ }
+-exports.pickShader = {
+-  vertex:   pickVertSrc,
+-  fragment: pickFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'id', type: 'vec4'}
+-  ]
++
++function createErrorBars(options) {
++  var gl = options.gl
++  var buffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++      {
++        buffer: buffer,
++        type:   gl.FLOAT,
++        size:   3,
++        offset: 0,
++        stride: 40
++      },
++      {
++        buffer: buffer,
++        type:   gl.FLOAT,
++        size:   4,
++        offset: 12,
++        stride: 40
++      },
++      {
++        buffer: buffer,
++        type:   gl.FLOAT,
++        size:   3,
++        offset: 28,
++        stride: 40
++      }
++    ])
++
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location    = 1
++  shader.attributes.offset.location   = 2
++
++  var result = new ErrorBars(gl, buffer, vao, shader)
++  result.update(options)
++  return result
+ }
+-exports.pointPickShader = {
+-  vertex:   pickPointVertSrc,
+-  fragment: pickFragSrc,
+-  attributes: [
++
++},{"./shaders/index":98,"gl-buffer":94,"gl-vao":148}],98:[function(require,module,exports){
++'use strict'
++
++
++var createShader = require('gl-shader')
++
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, offset;\nattribute vec4 color;\nuniform mat4 model, view, projection;\nuniform float capSize;\nvarying vec4 fragColor;\nvarying vec3 fragPosition;\n\nvoid main() {\n  vec4 worldPosition  = model * vec4(position, 1.0);\n  worldPosition       = (worldPosition / worldPosition.w) + vec4(capSize * offset, 0.0);\n  gl_Position         = projection * view * worldPosition;\n  fragColor           = color;\n  fragPosition        = position;\n}"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\nuniform vec3 clipBounds[2];\nuniform float opacity;\nvarying vec3 fragPosition;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(fragPosition, clipBounds[0])) || any(greaterThan(fragPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = opacity * fragColor;\n}"
++
++module.exports = function(gl) {
++  return createShader(gl, vertSrc, fragSrc, null, [
+     {name: 'position', type: 'vec3'},
+-    {name: 'pointSize', type: 'float'},
+-    {name: 'id', type: 'vec4'}
+-  ]
+-}
+-exports.contourShader = {
+-  vertex:   contourVertSrc,
+-  fragment: contourFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'}
+-  ]
++    {name: 'offset', type: 'vec3'},
++    {name: 'color', type: 'vec4'}
++  ])
+ }
+ 
+-},{}],133:[function(require,module,exports){
++},{"gl-shader":133}],99:[function(require,module,exports){
+ 'use strict'
+ 
+-var DEFAULT_VERTEX_NORMALS_EPSILON = 1e-6; // may be too large if triangles are very small
+-var DEFAULT_FACE_NORMALS_EPSILON = 1e-6;
+-
+-var createShader  = require('gl-shader')
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+ var createTexture = require('gl-texture2d')
+-var normals       = require('normals')
+-var multiply      = require('gl-mat4/multiply')
+-var invert        = require('gl-mat4/invert')
+-var ndarray       = require('ndarray')
+-var colormap      = require('colormap')
+-var getContour    = require('simplicial-complex-contour')
+-var pool          = require('typedarray-pool')
+-var shaders       = require('./lib/shaders')
+-var closestPoint  = require('./lib/closest-point')
+ 
+-var meshShader    = shaders.meshShader
+-var wireShader    = shaders.wireShader
+-var pointShader   = shaders.pointShader
+-var pickShader    = shaders.pickShader
+-var pointPickShader = shaders.pointPickShader
+-var contourShader = shaders.contourShader
++module.exports = createFBO
+ 
+-var identityMatrix = [
+-  1,0,0,0,
+-  0,1,0,0,
+-  0,0,1,0,
+-  0,0,0,1]
++var colorAttachmentArrays = null
++var FRAMEBUFFER_UNSUPPORTED
++var FRAMEBUFFER_INCOMPLETE_ATTACHMENT
++var FRAMEBUFFER_INCOMPLETE_DIMENSIONS
++var FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+ 
+-function SimplicialMesh(gl
+-  , texture
+-  , triShader
+-  , lineShader
+-  , pointShader
+-  , pickShader
+-  , pointPickShader
+-  , contourShader
+-  , trianglePositions
+-  , triangleIds
+-  , triangleColors
+-  , triangleUVs
+-  , triangleNormals
+-  , triangleVAO
+-  , edgePositions
+-  , edgeIds
+-  , edgeColors
+-  , edgeUVs
+-  , edgeVAO
+-  , pointPositions
+-  , pointIds
+-  , pointColors
+-  , pointUVs
+-  , pointSizes
+-  , pointVAO
+-  , contourPositions
+-  , contourVAO) {
++function saveFBOState(gl) {
++  var fbo = gl.getParameter(gl.FRAMEBUFFER_BINDING)
++  var rbo = gl.getParameter(gl.RENDERBUFFER_BINDING)
++  var tex = gl.getParameter(gl.TEXTURE_BINDING_2D)
++  return [fbo, rbo, tex]
++}
+ 
+-  this.gl                = gl
+-  this.cells             = []
+-  this.positions         = []
+-  this.intensity         = []
+-  this.texture           = texture
+-  this.dirty             = true
++function restoreFBOState(gl, data) {
++  gl.bindFramebuffer(gl.FRAMEBUFFER, data[0])
++  gl.bindRenderbuffer(gl.RENDERBUFFER, data[1])
++  gl.bindTexture(gl.TEXTURE_2D, data[2])
++}
+ 
+-  this.triShader         = triShader
+-  this.lineShader        = lineShader
+-  this.pointShader       = pointShader
+-  this.pickShader        = pickShader
+-  this.pointPickShader   = pointPickShader
+-  this.contourShader     = contourShader
++function lazyInitColorAttachments(gl, ext) {
++  var maxColorAttachments = gl.getParameter(ext.MAX_COLOR_ATTACHMENTS_WEBGL)
++  colorAttachmentArrays = new Array(maxColorAttachments + 1)
++  for(var i=0; i<=maxColorAttachments; ++i) {
++    var x = new Array(maxColorAttachments)
++    for(var j=0; j<i; ++j) {
++      x[j] = gl.COLOR_ATTACHMENT0 + j
++    }
++    for(var j=i; j<maxColorAttachments; ++j) {
++      x[j] = gl.NONE
++    }
++    colorAttachmentArrays[i] = x
++  }
++}
+ 
+-  this.trianglePositions = trianglePositions
+-  this.triangleColors    = triangleColors
+-  this.triangleNormals   = triangleNormals
+-  this.triangleUVs       = triangleUVs
+-  this.triangleIds       = triangleIds
+-  this.triangleVAO       = triangleVAO
+-  this.triangleCount     = 0
++//Throw an appropriate error
++function throwFBOError(status) {
++  switch(status){
++    case FRAMEBUFFER_UNSUPPORTED:
++      throw new Error('gl-fbo: Framebuffer unsupported')
++    case FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
++      throw new Error('gl-fbo: Framebuffer incomplete attachment')
++    case FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
++      throw new Error('gl-fbo: Framebuffer incomplete dimensions')
++    case FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
++      throw new Error('gl-fbo: Framebuffer incomplete missing attachment')
++    default:
++      throw new Error('gl-fbo: Framebuffer failed for unspecified reason')
++  }
++}
+ 
+-  this.lineWidth         = 1
+-  this.edgePositions     = edgePositions
+-  this.edgeColors        = edgeColors
+-  this.edgeUVs           = edgeUVs
+-  this.edgeIds           = edgeIds
+-  this.edgeVAO           = edgeVAO
+-  this.edgeCount         = 0
++//Initialize a texture object
++function initTexture(gl, width, height, type, format, attachment) {
++  if(!type) {
++    return null
++  }
++  var result = createTexture(gl, width, height, format, type)
++  result.magFilter = gl.NEAREST
++  result.minFilter = gl.NEAREST
++  result.mipSamples = 1
++  result.bind()
++  gl.framebufferTexture2D(gl.FRAMEBUFFER, attachment, gl.TEXTURE_2D, result.handle, 0)
++  return result
++}
+ 
+-  this.pointPositions    = pointPositions
+-  this.pointColors       = pointColors
+-  this.pointUVs          = pointUVs
+-  this.pointSizes        = pointSizes
+-  this.pointIds          = pointIds
+-  this.pointVAO          = pointVAO
+-  this.pointCount        = 0
++//Initialize a render buffer object
++function initRenderBuffer(gl, width, height, component, attachment) {
++  var result = gl.createRenderbuffer()
++  gl.bindRenderbuffer(gl.RENDERBUFFER, result)
++  gl.renderbufferStorage(gl.RENDERBUFFER, component, width, height)
++  gl.framebufferRenderbuffer(gl.FRAMEBUFFER, attachment, gl.RENDERBUFFER, result)
++  return result
++}
++
++//Rebuild the frame buffer
++function rebuildFBO(fbo) {
++
++  //Save FBO state
++  var state = saveFBOState(fbo.gl)
++
++  var gl = fbo.gl
++  var handle = fbo.handle = gl.createFramebuffer()
++  var width = fbo._shape[0]
++  var height = fbo._shape[1]
++  var numColors = fbo.color.length
++  var ext = fbo._ext
++  var useStencil = fbo._useStencil
++  var useDepth = fbo._useDepth
++  var colorType = fbo._colorType
++
++  //Bind the fbo
++  gl.bindFramebuffer(gl.FRAMEBUFFER, handle)
++
++  //Allocate color buffers
++  for(var i=0; i<numColors; ++i) {
++    fbo.color[i] = initTexture(gl, width, height, colorType, gl.RGBA, gl.COLOR_ATTACHMENT0 + i)
++  }
++  if(numColors === 0) {
++    fbo._color_rb = initRenderBuffer(gl, width, height, gl.RGBA4, gl.COLOR_ATTACHMENT0)
++    if(ext) {
++      ext.drawBuffersWEBGL(colorAttachmentArrays[0])
++    }
++  } else if(numColors > 1) {
++    ext.drawBuffersWEBGL(colorAttachmentArrays[numColors])
++  }
+ 
+-  this.contourLineWidth  = 1
+-  this.contourPositions  = contourPositions
+-  this.contourVAO        = contourVAO
+-  this.contourCount      = 0
+-  this.contourColor      = [0,0,0]
+-  this.contourEnable     = true
++  //Allocate depth/stencil buffers
++  var WEBGL_depth_texture = gl.getExtension('WEBGL_depth_texture')
++  if(WEBGL_depth_texture) {
++    if(useStencil) {
++      fbo.depth = initTexture(gl, width, height,
++                          WEBGL_depth_texture.UNSIGNED_INT_24_8_WEBGL,
++                          gl.DEPTH_STENCIL,
++                          gl.DEPTH_STENCIL_ATTACHMENT)
++    } else if(useDepth) {
++      fbo.depth = initTexture(gl, width, height,
++                          gl.UNSIGNED_SHORT,
++                          gl.DEPTH_COMPONENT,
++                          gl.DEPTH_ATTACHMENT)
++    }
++  } else {
++    if(useDepth && useStencil) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_STENCIL, gl.DEPTH_STENCIL_ATTACHMENT)
++    } else if(useDepth) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_COMPONENT16, gl.DEPTH_ATTACHMENT)
++    } else if(useStencil) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.STENCIL_INDEX, gl.STENCIL_ATTACHMENT)
++    }
++  }
+ 
+-  this.pickId            = 1
+-  this.bounds            = [
+-    [ Infinity, Infinity, Infinity],
+-    [-Infinity,-Infinity,-Infinity] ]
+-  this.clipBounds        = [
+-    [-Infinity,-Infinity,-Infinity],
+-    [ Infinity, Infinity, Infinity] ]
++  //Check frame buffer state
++  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
++  if(status !== gl.FRAMEBUFFER_COMPLETE) {
+ 
+-  this.lightPosition = [1e5, 1e5, 0]
+-  this.ambientLight  = 0.8
+-  this.diffuseLight  = 0.8
+-  this.specularLight = 2.0
+-  this.roughness     = 0.5
+-  this.fresnel       = 1.5
++    //Release all partially allocated resources
++    fbo._destroyed = true
+ 
+-  this.opacity       = 1.0
++    //Release all resources
++    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++    gl.deleteFramebuffer(fbo.handle)
++    fbo.handle = null
++    if(fbo.depth) {
++      fbo.depth.dispose()
++      fbo.depth = null
++    }
++    if(fbo._depth_rb) {
++      gl.deleteRenderbuffer(fbo._depth_rb)
++      fbo._depth_rb = null
++    }
++    for(var i=0; i<fbo.color.length; ++i) {
++      fbo.color[i].dispose()
++      fbo.color[i] = null
++    }
++    if(fbo._color_rb) {
++      gl.deleteRenderbuffer(fbo._color_rb)
++      fbo._color_rb = null
++    }
+ 
+-  this._model       = identityMatrix
+-  this._view        = identityMatrix
+-  this._projection  = identityMatrix
+-  this._resolution  = [1,1]
+-}
++    restoreFBOState(gl, state)
+ 
+-var proto = SimplicialMesh.prototype
++    //Throw the frame buffer error
++    throwFBOError(status)
++  }
+ 
+-proto.isOpaque = function() {
+-  return this.opacity >= 1
++  //Everything ok, let's get on with life
++  restoreFBOState(gl, state)
+ }
+ 
+-proto.isTransparent = function() {
+-  return this.opacity < 1
+-}
++function Framebuffer(gl, width, height, colorType, numColors, useDepth, useStencil, ext) {
+ 
+-proto.pickSlots = 1
++  //Handle and set properties
++  this.gl = gl
++  this._shape = [width|0, height|0]
++  this._destroyed = false
++  this._ext = ext
+ 
+-proto.setPickBase = function(id) {
+-  this.pickId = id
+-}
++  //Allocate buffers
++  this.color = new Array(numColors)
++  for(var i=0; i<numColors; ++i) {
++    this.color[i] = null
++  }
++  this._color_rb = null
++  this.depth = null
++  this._depth_rb = null
+ 
+-function genColormap(param) {
+-  var colors = colormap({
+-      colormap: param
+-    , nshades:  256
+-    , format:  'rgba'
+-  })
++  //Save depth and stencil flags
++  this._colorType = colorType
++  this._useDepth = useDepth
++  this._useStencil = useStencil
+ 
+-  var result = new Uint8Array(256*4)
+-  for(var i=0; i<256; ++i) {
+-    var c = colors[i]
+-    for(var j=0; j<3; ++j) {
+-      result[4*i+j] = c[j]
++  //Shape vector for resizing
++  var parent = this
++  var shapeVector = [width|0, height|0]
++  Object.defineProperties(shapeVector, {
++    0: {
++      get: function() {
++        return parent._shape[0]
++      },
++      set: function(w) {
++        return parent.width = w
++      }
++    },
++    1: {
++      get: function() {
++        return parent._shape[1]
++      },
++      set: function(h) {
++        return parent.height = h
++      }
+     }
+-    result[4*i+3] = c[3]*255
+-  }
++  })
++  this._shapeVector = shapeVector
+ 
+-  return ndarray(result, [256,256,4], [4,0,1])
++  //Initialize all attachments
++  rebuildFBO(this)
+ }
+ 
+-function unpackIntensity(cells, numVerts, cellIntensity) {
+-  var result = new Array(numVerts)
+-  for(var i=0; i<numVerts; ++i) {
+-    result[i] = 0
+-  }
+-  var numCells = cells.length
+-  for(var i=0; i<numCells; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      result[c[j]] = cellIntensity[i]
+-    }
+-  }
+-  return result
+-}
++var proto = Framebuffer.prototype
+ 
+-function takeZComponent(array) {
+-  var n = array.length
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = array[i][2]
++function reshapeFBO(fbo, w, h) {
++  //If fbo is invalid, just skip this
++  if(fbo._destroyed) {
++    throw new Error('gl-fbo: Can\'t resize destroyed FBO')
+   }
+-  return result
+-}
+ 
+-proto.highlight = function(selection) {
+-  if(!selection || !this.contourEnable) {
+-    this.contourCount = 0
++  //Don't resize if no change in shape
++  if( (fbo._shape[0] === w) &&
++      (fbo._shape[1] === h) ) {
+     return
+   }
+-  var level = getContour(this.cells, this.intensity, selection.intensity)
+-  var cells         = level.cells
+-  var vertexIds     = level.vertexIds
+-  var vertexWeights = level.vertexWeights
+-  var numCells = cells.length
+-  var result = pool.mallocFloat32(2 * 3 * numCells)
+-  var ptr = 0
+-  for(var i=0; i<numCells; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<2; ++j) {
+-      var v = c[0]
+-      if(c.length === 2) {
+-        v = c[j]
+-      }
+-      var a = vertexIds[v][0]
+-      var b = vertexIds[v][1]
+-      var w = vertexWeights[v]
+-      var wi = 1.0 - w
+-      var pa = this.positions[a]
+-      var pb = this.positions[b]
+-      for(var k=0; k<3; ++k) {
+-        result[ptr++] = w * pa[k] + wi * pb[k]
+-      }
+-    }
++
++  var gl = fbo.gl
++
++  //Check parameter ranges
++  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
++  if( w < 0 || w > maxFBOSize ||
++      h < 0 || h > maxFBOSize) {
++    throw new Error('gl-fbo: Can\'t resize FBO, invalid dimensions')
+   }
+-  this.contourCount = (ptr / 3)|0
+-  this.contourPositions.update(result.subarray(0, ptr))
+-  pool.free(result)
+-}
+ 
+-proto.update = function(params) {
+-  params = params || {}
+-  var gl = this.gl
++  //Update shape
++  fbo._shape[0] = w
++  fbo._shape[1] = h
+ 
+-  this.dirty = true
++  //Save framebuffer state
++  var state = saveFBOState(gl)
+ 
+-  if('contourEnable' in params) {
+-    this.contourEnable = params.contourEnable
++  //Resize framebuffer attachments
++  for(var i=0; i<fbo.color.length; ++i) {
++    fbo.color[i].shape = fbo._shape
+   }
+-  if('contourColor' in params) {
+-    this.contourColor = params.contourColor
++  if(fbo._color_rb) {
++    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._color_rb)
++    gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fbo._shape[0], fbo._shape[1])
+   }
+-  if('lineWidth' in params) {
+-    this.lineWidth = params.lineWidth
++  if(fbo.depth) {
++    fbo.depth.shape = fbo._shape
+   }
+-  if('lightPosition' in params) {
+-    this.lightPosition = params.lightPosition
++  if(fbo._depth_rb) {
++    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._depth_rb)
++    if(fbo._useDepth && fbo._useStencil) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, fbo._shape[0], fbo._shape[1])
++    } else if(fbo._useDepth) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, fbo._shape[0], fbo._shape[1])
++    } else if(fbo._useStencil) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.STENCIL_INDEX, fbo._shape[0], fbo._shape[1])
++    }
+   }
+-  if('opacity' in params) {
+-    this.opacity = params.opacity
++
++  //Check FBO status after resize, if something broke then die in a fire
++  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo.handle)
++  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
++  if(status !== gl.FRAMEBUFFER_COMPLETE) {
++    fbo.dispose()
++    restoreFBOState(gl, state)
++    throwFBOError(status)
+   }
+-  if('ambient' in params) {
+-    this.ambientLight  = params.ambient
++
++  //Restore framebuffer state
++  restoreFBOState(gl, state)
++}
++
++Object.defineProperties(proto, {
++  'shape': {
++    get: function() {
++      if(this._destroyed) {
++        return [0,0]
++      }
++      return this._shapeVector
++    },
++    set: function(x) {
++      if(!Array.isArray(x)) {
++        x = [x|0, x|0]
++      }
++      if(x.length !== 2) {
++        throw new Error('gl-fbo: Shape vector must be length 2')
++      }
++
++      var w = x[0]|0
++      var h = x[1]|0
++      reshapeFBO(this, w, h)
++
++      return [w, h]
++    },
++    enumerable: false
++  },
++  'width': {
++    get: function() {
++      if(this._destroyed) {
++        return 0
++      }
++      return this._shape[0]
++    },
++    set: function(w) {
++      w = w|0
++      reshapeFBO(this, w, this._shape[1])
++      return w
++    },
++    enumerable: false
++  },
++  'height': {
++    get: function() {
++      if(this._destroyed) {
++        return 0
++      }
++      return this._shape[1]
++    },
++    set: function(h) {
++      h = h|0
++      reshapeFBO(this, this._shape[0], h)
++      return h
++    },
++    enumerable: false
+   }
+-  if('diffuse' in params) {
+-    this.diffuseLight = params.diffuse
++})
++
++proto.bind = function() {
++  if(this._destroyed) {
++    return
+   }
+-  if('specular' in params) {
+-    this.specularLight = params.specular
++  var gl = this.gl
++  gl.bindFramebuffer(gl.FRAMEBUFFER, this.handle)
++  gl.viewport(0, 0, this._shape[0], this._shape[1])
++}
++
++proto.dispose = function() {
++  if(this._destroyed) {
++    return
+   }
+-  if('roughness' in params) {
+-    this.roughness = params.roughness
++  this._destroyed = true
++  var gl = this.gl
++  gl.deleteFramebuffer(this.handle)
++  this.handle = null
++  if(this.depth) {
++    this.depth.dispose()
++    this.depth = null
+   }
+-  if('fresnel' in params) {
+-    this.fresnel = params.fresnel
++  if(this._depth_rb) {
++    gl.deleteRenderbuffer(this._depth_rb)
++    this._depth_rb = null
+   }
+-
+-  if(params.texture) {
+-    this.texture.dispose()
+-    this.texture = createTexture(gl, params.texture)
+-  } else if (params.colormap) {
+-    this.texture.shape = [256,256]
+-    this.texture.minFilter = gl.LINEAR_MIPMAP_LINEAR
+-    this.texture.magFilter = gl.LINEAR
+-    this.texture.setPixels(genColormap(params.colormap))
+-    this.texture.generateMipmap()
++  for(var i=0; i<this.color.length; ++i) {
++    this.color[i].dispose()
++    this.color[i] = null
+   }
+-
+-  var cells = params.cells
+-  var positions = params.positions
+-
+-  if(!positions || !cells) {
+-    return
++  if(this._color_rb) {
++    gl.deleteRenderbuffer(this._color_rb)
++    this._color_rb = null
+   }
++}
+ 
+-  var tPos = []
+-  var tCol = []
+-  var tNor = []
+-  var tUVs = []
+-  var tIds = []
+-
+-  var ePos = []
+-  var eCol = []
+-  var eUVs = []
+-  var eIds = []
+-
+-  var pPos = []
+-  var pCol = []
+-  var pUVs = []
+-  var pSiz = []
+-  var pIds = []
+-
+-  //Save geometry data for picking calculations
+-  this.cells     = cells
+-  this.positions = positions
++function createFBO(gl, width, height, options) {
+ 
+-  //Compute normals
+-  var vertexNormals = params.vertexNormals
+-  var cellNormals   = params.cellNormals
+-  var vertexNormalsEpsilon = params.vertexNormalsEpsilon === void(0) ? DEFAULT_VERTEX_NORMALS_EPSILON : params.vertexNormalsEpsilon
+-  var faceNormalsEpsilon = params.faceNormalsEpsilon === void(0) ? DEFAULT_FACE_NORMALS_EPSILON : params.faceNormalsEpsilon
+-  if(params.useFacetNormals && !cellNormals) {
+-    cellNormals = normals.faceNormals(cells, positions, faceNormalsEpsilon)
+-  }
+-  if(!cellNormals && !vertexNormals) {
+-    vertexNormals = normals.vertexNormals(cells, positions, vertexNormalsEpsilon)
++  //Update frame buffer error code values
++  if(!FRAMEBUFFER_UNSUPPORTED) {
++    FRAMEBUFFER_UNSUPPORTED = gl.FRAMEBUFFER_UNSUPPORTED
++    FRAMEBUFFER_INCOMPLETE_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT
++    FRAMEBUFFER_INCOMPLETE_DIMENSIONS = gl.FRAMEBUFFER_INCOMPLETE_DIMENSIONS
++    FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+   }
+ 
+-  //Compute colors
+-  var vertexColors    = params.vertexColors
+-  var cellColors      = params.cellColors
+-  var meshColor       = params.meshColor || [1,1,1,1]
++  //Lazily initialize color attachment arrays
++  var WEBGL_draw_buffers = gl.getExtension('WEBGL_draw_buffers')
++  if(!colorAttachmentArrays && WEBGL_draw_buffers) {
++    lazyInitColorAttachments(gl, WEBGL_draw_buffers)
++  }
+ 
+-  //UVs
+-  var vertexUVs       = params.vertexUVs
+-  var vertexIntensity = params.vertexIntensity
+-  var cellUVs         = params.cellUVs
+-  var cellIntensity   = params.cellIntensity
++  //Special case: Can accept an array as argument
++  if(Array.isArray(width)) {
++    options = height
++    height = width[1]|0
++    width = width[0]|0
++  }
+ 
+-  var intensityLo     = Infinity
+-  var intensityHi     = -Infinity
+-  if(!vertexUVs && !cellUVs) {
+-    if(vertexIntensity) {
+-      for(var i=0; i<vertexIntensity.length; ++i) {
+-        var f = vertexIntensity[i]
+-        intensityLo = Math.min(intensityLo, f)
+-        intensityHi = Math.max(intensityHi, f)
+-      }
+-    } else if(cellIntensity) {
+-      for(var i=0; i<cellIntensity.length; ++i) {
+-        var f = cellIntensity[i]
+-        intensityLo = Math.min(intensityLo, f)
+-        intensityHi = Math.max(intensityHi, f)
+-      }
+-    } else {
+-      for(var i=0; i<positions.length; ++i) {
+-        var f = positions[i][2]
+-        intensityLo = Math.min(intensityLo, f)
+-        intensityHi = Math.max(intensityHi, f)
+-      }
+-    }
++  if(typeof width !== 'number') {
++    throw new Error('gl-fbo: Missing shape parameter')
+   }
+ 
+-  if(vertexIntensity) {
+-    this.intensity = vertexIntensity
+-  } else if(cellIntensity) {
+-    this.intensity = unpackIntensity(cells, positions.length, cellIntensity)
+-  } else {
+-    this.intensity = takeZComponent(positions)
++  //Validate width/height properties
++  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
++  if(width < 0 || width > maxFBOSize || height < 0 || height > maxFBOSize) {
++    throw new Error('gl-fbo: Parameters are too large for FBO')
+   }
+ 
+-  //Point size
+-  var pointSizes      = params.pointSizes
+-  var meshPointSize   = params.pointSize || 1.0
++  //Handle each option type
++  options = options || {}
+ 
+-  //Update bounds
+-  this.bounds       = [[Infinity,Infinity,Infinity], [-Infinity,-Infinity,-Infinity]]
+-  for(var i=0; i<positions.length; ++i) {
+-    var p = positions[i]
+-    for(var j=0; j<3; ++j) {
+-      if(isNaN(p[j]) || !isFinite(p[j])) {
+-        continue
++  //Figure out number of color buffers to use
++  var numColors = 1
++  if('color' in options) {
++    numColors = Math.max(options.color|0, 0)
++    if(numColors < 0) {
++      throw new Error('gl-fbo: Must specify a nonnegative number of colors')
++    }
++    if(numColors > 1) {
++      //Check if multiple render targets supported
++      if(!WEBGL_draw_buffers) {
++        throw new Error('gl-fbo: Multiple draw buffer extension not supported')
++      } else if(numColors > gl.getParameter(WEBGL_draw_buffers.MAX_COLOR_ATTACHMENTS_WEBGL)) {
++        throw new Error('gl-fbo: Context does not support ' + numColors + ' draw buffers')
+       }
+-      this.bounds[0][j] = Math.min(this.bounds[0][j], p[j])
+-      this.bounds[1][j] = Math.max(this.bounds[1][j], p[j])
+     }
+   }
+ 
+-  //Pack cells into buffers
+-  var triangleCount = 0
+-  var edgeCount = 0
+-  var pointCount = 0
++  //Determine whether to use floating point textures
++  var colorType = gl.UNSIGNED_BYTE
++  var OES_texture_float = gl.getExtension('OES_texture_float')
++  if(options.float && numColors > 0) {
++    if(!OES_texture_float) {
++      throw new Error('gl-fbo: Context does not support floating point textures')
++    }
++    colorType = gl.FLOAT
++  } else if(options.preferFloat && numColors > 0) {
++    if(OES_texture_float) {
++      colorType = gl.FLOAT
++    }
++  }
+ 
+-fill_loop:
+-  for(var i=0; i<cells.length; ++i) {
+-    var cell = cells[i]
+-    switch(cell.length) {
+-      case 1:
++  //Check if we should use depth buffer
++  var useDepth = true
++  if('depth' in options) {
++    useDepth = !!options.depth
++  }
+ 
+-        var v = cell[0]
+-        var p = positions[v]
++  //Check if we should use a stencil buffer
++  var useStencil = false
++  if('stencil' in options) {
++    useStencil = !!options.stencil
++  }
+ 
+-        //Check NaNs
+-        for(var j=0; j<3; ++j) {
+-          if(isNaN(p[j]) || !isFinite(p[j])) {
+-            continue fill_loop
+-          }
+-        }
++  return new Framebuffer(
++    gl,
++    width,
++    height,
++    colorType,
++    numColors,
++    useDepth,
++    useStencil,
++    WEBGL_draw_buffers)
++}
+ 
+-        pPos.push(p[0], p[1], p[2])
++},{"gl-texture2d":144}],100:[function(require,module,exports){
+ 
+-        var c
+-        if(vertexColors) {
+-          c = vertexColors[v]
+-        } else if(cellColors) {
+-          c = cellColors[i]
+-        } else {
+-          c = meshColor
+-        }
+-        if(c.length === 3) {
+-          pCol.push(c[0], c[1], c[2], 1)
+-        } else {
+-          pCol.push(c[0], c[1], c[2], c[3])
+-        }
++var sprintf = require('sprintf-js').sprintf;
++var glConstants = require('gl-constants/lookup');
++var shaderName = require('glsl-shader-name');
++var addLineNumbers = require('add-line-numbers');
+ 
+-        var uv
+-        if(vertexUVs) {
+-          uv = vertexUVs[v]
+-        } else if(vertexIntensity) {
+-          uv = [
+-            (vertexIntensity[v] - intensityLo) /
+-            (intensityHi - intensityLo), 0]
+-        } else if(cellUVs) {
+-          uv = cellUVs[i]
+-        } else if(cellIntensity) {
+-          uv = [
+-            (cellIntensity[i] - intensityLo) /
+-            (intensityHi - intensityLo), 0]
+-        } else {
+-          uv = [
+-            (p[2] - intensityLo) /
+-            (intensityHi - intensityLo), 0]
+-        }
+-        pUVs.push(uv[0], uv[1])
++module.exports = formatCompilerError;
+ 
+-        if(pointSizes) {
+-          pSiz.push(pointSizes[v])
+-        } else {
+-          pSiz.push(meshPointSize)
+-        }
++function formatCompilerError(errLog, src, type) {
++    "use strict";
+ 
+-        pIds.push(i)
++    var name = shaderName(src) || 'of unknown name (see npm glsl-shader-name)';
+ 
+-        pointCount += 1
+-      break
++    var typeName = 'unknown type';
++    if (type !== undefined) {
++        typeName = type === glConstants.FRAGMENT_SHADER ? 'fragment' : 'vertex'
++    }
+ 
+-      case 2:
++    var longForm = sprintf('Error compiling %s shader %s:\n', typeName, name);
++    var shortForm = sprintf("%s%s", longForm, errLog);
+ 
+-        //Check NaNs
+-        for(var j=0; j<2; ++j) {
+-          var v = cell[j]
+-          var p = positions[v]
+-          for(var k=0; k<3; ++k) {
+-            if(isNaN(p[k]) || !isFinite(p[k])) {
+-              continue fill_loop
+-            }
+-          }
++    var errorStrings = errLog.split('\n');
++    var errors = {};
++
++    for (var i = 0; i < errorStrings.length; i++) {
++        var errorString = errorStrings[i];
++        if (errorString === '') continue;
++        var lineNo = parseInt(errorString.split(':')[2]);
++        if (isNaN(lineNo)) {
++            throw new Error(sprintf('Could not parse error: %s', errorString));
+         }
++        errors[lineNo] = errorString;
++    }
+ 
+-        for(var j=0; j<2; ++j) {
+-          var v = cell[j]
+-          var p = positions[v]
++    var lines = addLineNumbers(src).split('\n');
+ 
+-          ePos.push(p[0], p[1], p[2])
++    for (var i = 0; i < lines.length; i++) {
++        if (!errors[i+3] && !errors[i+2] && !errors[i+1]) continue;
++        var line = lines[i];
++        longForm += line + '\n';
++        if (errors[i+1]) {
++            var e = errors[i+1];
++            e = e.substr(e.split(':', 3).join(':').length + 1).trim();
++            longForm += sprintf('^^^ %s\n\n', e);
++        }
++    }
+ 
+-          var c
+-          if(vertexColors) {
+-            c = vertexColors[v]
+-          } else if(cellColors) {
+-            c = cellColors[i]
+-          } else {
+-            c = meshColor
+-          }
+-          if(c.length === 3) {
+-            eCol.push(c[0], c[1], c[2], 1)
+-          } else {
+-            eCol.push(c[0], c[1], c[2], c[3])
+-          }
++    return {
++        long: longForm.trim(),
++        short: shortForm.trim()
++    };
++}
+ 
+-          var uv
+-          if(vertexUVs) {
+-            uv = vertexUVs[v]
+-          } else if(vertexIntensity) {
+-            uv = [
+-              (vertexIntensity[v] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else if(cellUVs) {
+-            uv = cellUVs[i]
+-          } else if(cellIntensity) {
+-            uv = [
+-              (cellIntensity[i] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else {
+-            uv = [
+-              (p[2] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          }
+-          eUVs.push(uv[0], uv[1])
+ 
+-          eIds.push(i)
+-        }
+-        edgeCount += 1
+-      break
++},{"add-line-numbers":11,"gl-constants/lookup":96,"glsl-shader-name":156,"sprintf-js":237}],101:[function(require,module,exports){
+ 
+-      case 3:
+-        //Check NaNs
+-        for(var j=0; j<3; ++j) {
+-          var v = cell[j]
+-          var p = positions[v]
+-          for(var k=0; k<3; ++k) {
+-            if(isNaN(p[k]) || !isFinite(p[k])) {
+-              continue fill_loop
+-            }
+-          }
+-        }
++var createShader  = require('gl-shader')
+ 
+-        for(var j=0; j<3; ++j) {
+-          var v = cell[j]
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, nextPosition;\nattribute float arcLength, lineWidth;\nattribute vec4 color;\n\nuniform vec2 screenShape;\nuniform float pixelRatio;\nuniform mat4 model, view, projection;\n\nvarying vec4 fragColor;\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\n\nvoid main() {\n  vec4 projected = projection * view * model * vec4(position, 1.0);\n  vec4 tangentClip = projection * view * model * vec4(nextPosition - position, 0.0);\n  vec2 tangent = normalize(screenShape * tangentClip.xy);\n  vec2 offset = 0.5 * pixelRatio * lineWidth * vec2(tangent.y, -tangent.x) / screenShape;\n\n  gl_Position = vec4(projected.xy + projected.w * offset, projected.zw);\n\n  worldPosition = position;\n  pixelArcLength = arcLength;\n  fragColor = color;\n}\n"
++var forwardFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3      clipBounds[2];\nuniform sampler2D dashTexture;\nuniform float     dashScale;\nuniform float     opacity;\n\nvarying vec3    worldPosition;\nvarying float   pixelArcLength;\nvarying vec4    fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  float dashWeight = texture2D(dashTexture, vec2(dashScale * pixelArcLength, 0)).r;\n  if(dashWeight < 0.5) {\n    discard;\n  }\n  gl_FragColor = fragColor * opacity;\n}\n"
++var pickFrag = "precision mediump float;\n#define GLSLIFY 1\n\n#define FLOAT_MAX  1.70141184e38\n#define FLOAT_MIN  1.17549435e-38\n\nlowp vec4 encode_float_1_0(highp float v) {\n  highp float av = abs(v);\n\n  //Handle special cases\n  if(av < FLOAT_MIN) {\n    return vec4(0.0, 0.0, 0.0, 0.0);\n  } else if(v > FLOAT_MAX) {\n    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;\n  } else if(v < -FLOAT_MAX) {\n    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;\n  }\n\n  highp vec4 c = vec4(0,0,0,0);\n\n  //Compute exponent and mantissa\n  highp float e = floor(log2(av));\n  highp float m = av * pow(2.0, -e) - 1.0;\n  \n  //Unpack mantissa\n  c[1] = floor(128.0 * m);\n  m -= c[1] / 128.0;\n  c[2] = floor(32768.0 * m);\n  m -= c[2] / 32768.0;\n  c[3] = floor(8388608.0 * m);\n  \n  //Unpack exponent\n  highp float ebias = e + 127.0;\n  c[0] = floor(ebias / 2.0);\n  ebias -= c[0] * 2.0;\n  c[1] += floor(ebias) * 128.0; \n\n  //Unpack sign bit\n  c[0] += 128.0 * step(0.0, -v);\n\n  //Scale back to range\n  return c / 255.0;\n}\n\n\n\nuniform float pickId;\nuniform vec3 clipBounds[2];\n\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId/255.0, encode_float_1_0(pixelArcLength).xyz);\n}"
+ 
+-          var p = positions[v]
+-          tPos.push(p[0], p[1], p[2])
++var ATTRIBUTES = [
++  {name: 'position', type: 'vec3'},
++  {name: 'nextPosition', type: 'vec3'},
++  {name: 'arcLength', type: 'float'},
++  {name: 'lineWidth', type: 'float'},
++  {name: 'color', type: 'vec4'}
++]
+ 
+-          var c
+-          if(vertexColors) {
+-            c = vertexColors[v]
+-          } else if(cellColors) {
+-            c = cellColors[i]
+-          } else {
+-            c = meshColor
+-          }
+-          if(c.length === 3) {
+-            tCol.push(c[0], c[1], c[2], 1)
+-          } else {
+-            tCol.push(c[0], c[1], c[2], c[3])
+-          }
++exports.createShader = function(gl) {
++  return createShader(gl, vertSrc, forwardFrag, null, ATTRIBUTES)
++}
+ 
+-          var uv
+-          if(vertexUVs) {
+-            uv = vertexUVs[v]
+-          } else if(vertexIntensity) {
+-            uv = [
+-              (vertexIntensity[v] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else if(cellUVs) {
+-            uv = cellUVs[i]
+-          } else if(cellIntensity) {
+-            uv = [
+-              (cellIntensity[i] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else {
+-            uv = [
+-              (p[2] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          }
+-          tUVs.push(uv[0], uv[1])
++exports.createPickShader = function(gl) {
++  return createShader(gl, vertSrc, pickFrag, null, ATTRIBUTES)
++}
+ 
+-          var q
+-          if(vertexNormals) {
+-            q = vertexNormals[v]
+-          } else {
+-            q = cellNormals[i]
+-          }
+-          tNor.push(q[0], q[1], q[2])
++},{"gl-shader":133}],102:[function(require,module,exports){
++'use strict'
+ 
+-          tIds.push(i)
+-        }
+-        triangleCount += 1
+-      break
++module.exports = createLinePlot
+ 
+-      default:
+-      break
+-    }
+-  }
++var createBuffer = require('gl-buffer')
++var createVAO = require('gl-vao')
++var createTexture = require('gl-texture2d')
++var unpackFloat = require('glsl-read-float')
++var bsearch = require('binary-search-bounds')
++var ndarray = require('ndarray')
++var shaders = require('./lib/shaders')
+ 
+-  this.pointCount     = pointCount
+-  this.edgeCount      = edgeCount
+-  this.triangleCount  = triangleCount
++var createShader = shaders.createShader
++var createPickShader = shaders.createPickShader
+ 
+-  this.pointPositions.update(pPos)
+-  this.pointColors.update(pCol)
+-  this.pointUVs.update(pUVs)
+-  this.pointSizes.update(pSiz)
+-  this.pointIds.update(new Uint32Array(pIds))
++var identity = [1, 0, 0, 0,
++  0, 1, 0, 0,
++  0, 0, 1, 0,
++  0, 0, 0, 1]
+ 
+-  this.edgePositions.update(ePos)
+-  this.edgeColors.update(eCol)
+-  this.edgeUVs.update(eUVs)
+-  this.edgeIds.update(new Uint32Array(eIds))
++function distance (a, b) {
++  var s = 0.0
++  for (var i = 0; i < 3; ++i) {
++    var d = a[i] - b[i]
++    s += d * d
++  }
++  return Math.sqrt(s)
++}
+ 
+-  this.trianglePositions.update(tPos)
+-  this.triangleColors.update(tCol)
+-  this.triangleUVs.update(tUVs)
+-  this.triangleNormals.update(tNor)
+-  this.triangleIds.update(new Uint32Array(tIds))
++function filterClipBounds (bounds) {
++  var result = [[-1e6, -1e6, -1e6], [1e6, 1e6, 1e6]]
++  for (var i = 0; i < 3; ++i) {
++    result[0][i] = Math.max(bounds[0][i], result[0][i])
++    result[1][i] = Math.min(bounds[1][i], result[1][i])
++  }
++  return result
+ }
+ 
+-proto.drawTransparent = proto.draw = function(params) {
+-  params = params || {}
+-  var gl          = this.gl
+-  var model       = params.model      || identityMatrix
+-  var view        = params.view       || identityMatrix
+-  var projection  = params.projection || identityMatrix
++function PickResult (tau, position, index, dataCoordinate) {
++  this.arcLength = tau
++  this.position = position
++  this.index = index
++  this.dataCoordinate = dataCoordinate
++}
+ 
+-  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
+-  for(var i=0; i<3; ++i) {
+-    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
+-    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
+-  }
++function LinePlot (gl, shader, pickShader, buffer, vao, texture) {
++  this.gl = gl
++  this.shader = shader
++  this.pickShader = pickShader
++  this.buffer = buffer
++  this.vao = vao
++  this.clipBounds = [
++    [ -Infinity, -Infinity, -Infinity ],
++    [ Infinity, Infinity, Infinity ]]
++  this.points = []
++  this.arcLength = []
++  this.vertexCount = 0
++  this.bounds = [[0, 0, 0], [0, 0, 0]]
++  this.pickId = 0
++  this.lineWidth = 1
++  this.texture = texture
++  this.dashScale = 1
++  this.opacity = 1
++  this.dirty = true
++  this.pixelRatio = 1
++}
+ 
+-  var uniforms = {
+-    model:      model,
+-    view:       view,
+-    projection: projection,
++var proto = LinePlot.prototype
+ 
+-    clipBounds: clipBounds,
++proto.isTransparent = function () {
++  return this.opacity < 1
++}
+ 
+-    kambient:   this.ambientLight,
+-    kdiffuse:   this.diffuseLight,
+-    kspecular:  this.specularLight,
+-    roughness:  this.roughness,
+-    fresnel:    this.fresnel,
++proto.isOpaque = function () {
++  return this.opacity >= 1
++}
+ 
+-    eyePosition:   [0,0,0],
+-    lightPosition: [0,0,0],
++proto.pickSlots = 1
+ 
+-    opacity:  this.opacity,
++proto.setPickBase = function (id) {
++  this.pickId = id
++}
+ 
+-    contourColor: this.contourColor,
++proto.drawTransparent = proto.draw = function (camera) {
++  var gl = this.gl
++  var shader = this.shader
++  var vao = this.vao
++  shader.bind()
++  shader.uniforms = {
++    model: camera.model || identity,
++    view: camera.view || identity,
++    projection: camera.projection || identity,
++    clipBounds: filterClipBounds(this.clipBounds),
++    dashTexture: this.texture.bind(),
++    dashScale: this.dashScale / this.arcLength[this.arcLength.length - 1],
++    opacity: this.opacity,
++    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
++    pixelRatio: this.pixelRatio
++  }
++  vao.bind()
++  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
++}
+ 
+-    texture:    0
++proto.drawPick = function (camera) {
++  var gl = this.gl
++  var shader = this.pickShader
++  var vao = this.vao
++  shader.bind()
++  shader.uniforms = {
++    model: camera.model || identity,
++    view: camera.view || identity,
++    projection: camera.projection || identity,
++    pickId: this.pickId,
++    clipBounds: filterClipBounds(this.clipBounds),
++    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
++    pixelRatio: this.pixelRatio
+   }
++  vao.bind()
++  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
++}
+ 
+-  this.texture.bind(0)
++proto.update = function (options) {
++  var i, j
+ 
+-  var invCameraMatrix = new Array(16)
+-  multiply(invCameraMatrix, uniforms.view, uniforms.model)
+-  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
+-  invert(invCameraMatrix, invCameraMatrix)
++  this.dirty = true
+ 
+-  for(var i=0; i<3; ++i) {
+-    uniforms.eyePosition[i] = invCameraMatrix[12+i] / invCameraMatrix[15]
+-  }
++  var connectGaps = !!options.connectGaps
+ 
+-  var w = invCameraMatrix[15]
+-  for(var i=0; i<3; ++i) {
+-    w += this.lightPosition[i] * invCameraMatrix[4*i+3]
++  if ('dashScale' in options) {
++    this.dashScale = options.dashScale
+   }
+-  for(var i=0; i<3; ++i) {
+-    var s = invCameraMatrix[12+i]
+-    for(var j=0; j<3; ++j) {
+-      s += invCameraMatrix[4*j+i] * this.lightPosition[j]
+-    }
+-    uniforms.lightPosition[i] = s / w
++  if ('opacity' in options) {
++    this.opacity = +options.opacity
+   }
+ 
+-  if(this.triangleCount > 0) {
+-    var shader = this.triShader
+-    shader.bind()
+-    shader.uniforms = uniforms
+-
+-    this.triangleVAO.bind()
+-    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
+-    this.triangleVAO.unbind()
++  var positions = options.position || options.positions
++  if (!positions) {
++    return
+   }
+ 
+-  if(this.edgeCount > 0 && this.lineWidth > 0) {
+-    var shader = this.lineShader
+-    shader.bind()
+-    shader.uniforms = uniforms
++  // Default color
++  var colors = options.color || options.colors || [0, 0, 0, 1]
+ 
+-    this.edgeVAO.bind()
+-    gl.lineWidth(this.lineWidth)
+-    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
+-    this.edgeVAO.unbind()
+-  }
++  var lineWidth = options.lineWidth || 1
+ 
+-  if(this.pointCount > 0) {
+-    var shader = this.pointShader
+-    shader.bind()
+-    shader.uniforms = uniforms
++  // Recalculate buffer data
++  var buffer = []
++  var arcLengthArray = []
++  var pointArray = []
++  var arcLength = 0.0
++  var vertexCount = 0
++  var bounds = [
++    [ Infinity, Infinity, Infinity ],
++    [ -Infinity, -Infinity, -Infinity ]]
++  var hadGap = false
+ 
+-    this.pointVAO.bind()
+-    gl.drawArrays(gl.POINTS, 0, this.pointCount)
+-    this.pointVAO.unbind()
+-  }
++  fill_loop:
++  for (i = 1; i < positions.length; ++i) {
++    var a = positions[i - 1]
++    var b = positions[i]
+ 
+-  if(this.contourEnable && this.contourCount > 0 && this.contourLineWidth > 0) {
+-    var shader = this.contourShader
+-    shader.bind()
+-    shader.uniforms = uniforms
++    arcLengthArray.push(arcLength)
++    pointArray.push(a.slice())
+ 
+-    this.contourVAO.bind()
+-    gl.drawArrays(gl.LINES, 0, this.contourCount)
+-    this.contourVAO.unbind()
+-  }
+-}
++    for (j = 0; j < 3; ++j) {
++      if (isNaN(a[j]) || isNaN(b[j]) ||
++        !isFinite(a[j]) || !isFinite(b[j])) {
+ 
+-proto.drawPick = function(params) {
+-  params = params || {}
++        if (!connectGaps && buffer.length > 0) {
++          for (var k = 0; k < 24; ++k) {
++            buffer.push(buffer[buffer.length - 12])
++          }
++          vertexCount += 2
++          hadGap = true
++        }
+ 
+-  var gl         = this.gl
++        continue fill_loop
++      }
++      bounds[0][j] = Math.min(bounds[0][j], a[j], b[j])
++      bounds[1][j] = Math.max(bounds[1][j], a[j], b[j])
++    }
++
++    var acolor, bcolor
++    if (Array.isArray(colors[0])) {
++      acolor = colors[i - 1]
++      bcolor = colors[i]
++    } else {
++      acolor = bcolor = colors
++    }
++    if (acolor.length === 3) {
++      acolor = [acolor[0], acolor[1], acolor[2], 1]
++    }
++    if (bcolor.length === 3) {
++      bcolor = [bcolor[0], bcolor[1], bcolor[2], 1]
++    }
++
++    var w0
++    if (Array.isArray(lineWidth)) {
++      w0 = lineWidth[i - 1]
++    } else {
++      w0 = lineWidth
++    }
++
++    var t0 = arcLength
++    arcLength += distance(a, b)
++
++    if (hadGap) {
++      for (j = 0; j < 2; ++j) {
++        buffer.push(
++          a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3])
++      }
++      vertexCount += 2
++      hadGap = false
++    }
+ 
+-  var model      = params.model      || identityMatrix
+-  var view       = params.view       || identityMatrix
+-  var projection = params.projection || identityMatrix
++    buffer.push(
++      a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3],
++      a[0], a[1], a[2], b[0], b[1], b[2], t0, -w0, acolor[0], acolor[1], acolor[2], acolor[3],
++      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, -w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3],
++      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3])
+ 
+-  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
+-  for(var i=0; i<3; ++i) {
+-    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
+-    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
++    vertexCount += 4
+   }
++  this.buffer.update(buffer)
+ 
+-  //Save camera parameters
+-  this._model      = [].slice.call(model)
+-  this._view       = [].slice.call(view)
+-  this._projection = [].slice.call(projection)
+-  this._resolution = [gl.drawingBufferWidth, gl.drawingBufferHeight]
++  arcLengthArray.push(arcLength)
++  pointArray.push(positions[positions.length - 1].slice())
+ 
+-  var uniforms = {
+-    model:      model,
+-    view:       view,
+-    projection: projection,
+-    clipBounds: clipBounds,
+-    pickId:     this.pickId / 255.0,
+-  }
++  this.bounds = bounds
+ 
+-  var shader = this.pickShader
+-  shader.bind()
+-  shader.uniforms = uniforms
++  this.vertexCount = vertexCount
+ 
+-  if(this.triangleCount > 0) {
+-    this.triangleVAO.bind()
+-    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
+-    this.triangleVAO.unbind()
+-  }
++  this.points = pointArray
++  this.arcLength = arcLengthArray
+ 
+-  if(this.edgeCount > 0) {
+-    this.edgeVAO.bind()
+-    gl.lineWidth(this.lineWidth)
+-    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
+-    this.edgeVAO.unbind()
+-  }
++  if ('dashes' in options) {
++    var dashArray = options.dashes
+ 
+-  if(this.pointCount > 0) {
+-    var shader = this.pointPickShader
+-    shader.bind()
+-    shader.uniforms = uniforms
++    // Calculate prefix sum
++    var prefixSum = dashArray.slice()
++    prefixSum.unshift(0)
++    for (i = 1; i < prefixSum.length; ++i) {
++      prefixSum[i] = prefixSum[i - 1] + prefixSum[i]
++    }
+ 
+-    this.pointVAO.bind()
+-    gl.drawArrays(gl.POINTS, 0, this.pointCount)
+-    this.pointVAO.unbind()
++    var dashTexture = ndarray(new Array(256 * 4), [256, 1, 4])
++    for (i = 0; i < 256; ++i) {
++      for (j = 0; j < 4; ++j) {
++        dashTexture.set(i, 0, j, 0)
++      }
++      if (bsearch.le(prefixSum, prefixSum[prefixSum.length - 1] * i / 255.0) & 1) {
++        dashTexture.set(i, 0, 0, 0)
++      } else {
++        dashTexture.set(i, 0, 0, 255)
++      }
++    }
++
++    this.texture.setPixels(dashTexture)
+   }
+ }
+ 
++proto.dispose = function () {
++  this.shader.dispose()
++  this.vao.dispose()
++  this.buffer.dispose()
++}
+ 
+-proto.pick = function(pickData) {
+-  if(!pickData) {
++proto.pick = function (selection) {
++  if (!selection) {
+     return null
+   }
+-  if(pickData.id !== this.pickId) {
++  if (selection.id !== this.pickId) {
+     return null
+   }
+-
+-  var cellId    = pickData.value[0] + 256*pickData.value[1] + 65536*pickData.value[2]
+-  var cell      = this.cells[cellId]
+-  var positions = this.positions
+-
+-  var simplex   = new Array(cell.length)
+-  for(var i=0; i<cell.length; ++i) {
+-    simplex[i] = positions[cell[i]]
+-  }
+-
+-  var data = closestPoint(
+-    simplex,
+-    [pickData.coord[0], this._resolution[1]-pickData.coord[1]],
+-    this._model,
+-    this._view,
+-    this._projection,
+-    this._resolution)
+-
+-  if(!data) {
++  var tau = unpackFloat(
++    selection.value[0],
++    selection.value[1],
++    selection.value[2],
++    0)
++  var index = bsearch.le(this.arcLength, tau)
++  if (index < 0) {
+     return null
+   }
+-
+-  var weights = data[2]
+-  var interpIntensity = 0.0
+-  for(var i=0; i<cell.length; ++i) {
+-    interpIntensity += weights[i] * this.intensity[cell[i]]
++  if (index === this.arcLength.length - 1) {
++    return new PickResult(
++      this.arcLength[this.arcLength.length - 1],
++      this.points[this.points.length - 1].slice(),
++      index)
+   }
+-
+-  return {
+-    position: data[1],
+-    index:    cell[data[0]],
+-    cell:     cell,
+-    cellId:   cellId,
+-    intensity:  interpIntensity,
+-    dataCoordinate: this.positions[cell[data[0]]]
++  var a = this.points[index]
++  var b = this.points[Math.min(index + 1, this.points.length - 1)]
++  var t = (tau - this.arcLength[index]) / (this.arcLength[index + 1] - this.arcLength[index])
++  var ti = 1.0 - t
++  var x = [0, 0, 0]
++  for (var i = 0; i < 3; ++i) {
++    x[i] = ti * a[i] + t * b[i]
+   }
++  var dataIndex = Math.min((t < 0.5) ? index : (index + 1), this.points.length - 1)
++  return new PickResult(
++    tau,
++    x,
++    dataIndex,
++    this.points[dataIndex])
+ }
+ 
++function createLinePlot (options) {
++  var gl = options.gl || (options.scene && options.scene.gl)
+ 
+-proto.dispose = function() {
+-  this.texture.dispose()
+-
+-  this.triShader.dispose()
+-  this.lineShader.dispose()
+-  this.pointShader.dispose()
+-  this.pickShader.dispose()
+-  this.pointPickShader.dispose()
+-
+-  this.triangleVAO.dispose()
+-  this.trianglePositions.dispose()
+-  this.triangleColors.dispose()
+-  this.triangleUVs.dispose()
+-  this.triangleNormals.dispose()
+-  this.triangleIds.dispose()
+-
+-  this.edgeVAO.dispose()
+-  this.edgePositions.dispose()
+-  this.edgeColors.dispose()
+-  this.edgeUVs.dispose()
+-  this.edgeIds.dispose()
+-
+-  this.pointVAO.dispose()
+-  this.pointPositions.dispose()
+-  this.pointColors.dispose()
+-  this.pointUVs.dispose()
+-  this.pointSizes.dispose()
+-  this.pointIds.dispose()
+-
+-  this.contourVAO.dispose()
+-  this.contourPositions.dispose()
+-  this.contourShader.dispose()
+-}
+-
+-function createMeshShader(gl) {
+-  var shader = createShader(gl, meshShader)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location    = 2
+-  shader.attributes.uv.location       = 3
+-  shader.attributes.normal.location   = 4
+-  return shader
+-}
+-
+-function createWireShader(gl) {
+-  var shader = createShader(gl, wireShader)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location    = 2
+-  shader.attributes.uv.location       = 3
+-  return shader
+-}
+-
+-function createPointShader(gl) {
+-  var shader = createShader(gl, pointShader)
+-  shader.attributes.position.location  = 0
+-  shader.attributes.color.location     = 2
+-  shader.attributes.uv.location        = 3
+-  shader.attributes.pointSize.location = 4
+-  return shader
+-}
+-
+-function createPickShader(gl) {
+-  var shader = createShader(gl, pickShader)
+-  shader.attributes.position.location = 0
+-  shader.attributes.id.location       = 1
+-  return shader
+-}
+-
+-function createPointPickShader(gl) {
+-  var shader = createShader(gl, pointPickShader)
+-  shader.attributes.position.location  = 0
+-  shader.attributes.id.location        = 1
+-  shader.attributes.pointSize.location = 4
+-  return shader
+-}
+-
+-function createContourShader(gl) {
+-  var shader = createShader(gl, contourShader)
++  var shader = createShader(gl)
+   shader.attributes.position.location = 0
+-  return shader
+-}
+-
+-function createSimplicialMesh(params) {
+-  var gl = params.gl
+-
+-  var triShader       = createMeshShader(gl)
+-  var lineShader      = createWireShader(gl)
+-  var pointShader     = createPointShader(gl)
+-  var pickShader      = createPickShader(gl)
+-  var pointPickShader = createPointPickShader(gl)
+-  var contourShader   = createContourShader(gl)
++  shader.attributes.nextPosition.location = 1
++  shader.attributes.arcLength.location = 2
++  shader.attributes.lineWidth.location = 3
++  shader.attributes.color.location = 4
+ 
+-  var meshTexture       = createTexture(gl,
+-    ndarray(new Uint8Array([255,255,255,255]), [1,1,4]))
+-  meshTexture.generateMipmap()
+-  meshTexture.minFilter = gl.LINEAR_MIPMAP_LINEAR
+-  meshTexture.magFilter = gl.LINEAR
++  var pickShader = createPickShader(gl)
++  pickShader.attributes.position.location = 0
++  pickShader.attributes.nextPosition.location = 1
++  pickShader.attributes.arcLength.location = 2
++  pickShader.attributes.lineWidth.location = 3
++  pickShader.attributes.color.location = 4
+ 
+-  var trianglePositions = createBuffer(gl)
+-  var triangleColors    = createBuffer(gl)
+-  var triangleUVs       = createBuffer(gl)
+-  var triangleNormals   = createBuffer(gl)
+-  var triangleIds       = createBuffer(gl)
+-  var triangleVAO       = createVAO(gl, [
+-    { buffer: trianglePositions,
+-      type: gl.FLOAT,
+-      size: 3
++  var buffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++    {
++      'buffer': buffer,
++      'size': 3,
++      'offset': 0,
++      'stride': 48
+     },
+-    { buffer: triangleIds,
+-      type: gl.UNSIGNED_BYTE,
+-      size: 4,
+-      normalized: true
++    {
++      'buffer': buffer,
++      'size': 3,
++      'offset': 12,
++      'stride': 48
+     },
+-    { buffer: triangleColors,
+-      type: gl.FLOAT,
+-      size: 4
++    {
++      'buffer': buffer,
++      'size': 1,
++      'offset': 24,
++      'stride': 48
+     },
+-    { buffer: triangleUVs,
+-      type: gl.FLOAT,
+-      size: 2
++    {
++      'buffer': buffer,
++      'size': 1,
++      'offset': 28,
++      'stride': 48
+     },
+-    { buffer: triangleNormals,
+-      type: gl.FLOAT,
+-      size: 3
++    {
++      'buffer': buffer,
++      'size': 4,
++      'offset': 32,
++      'stride': 48
+     }
+   ])
+ 
+-  var edgePositions = createBuffer(gl)
+-  var edgeColors    = createBuffer(gl)
+-  var edgeUVs       = createBuffer(gl)
+-  var edgeIds       = createBuffer(gl)
+-  var edgeVAO       = createVAO(gl, [
+-    { buffer: edgePositions,
+-      type: gl.FLOAT,
+-      size: 3
+-    },
+-    { buffer: edgeIds,
+-      type: gl.UNSIGNED_BYTE,
+-      size: 4,
+-      normalized: true
+-    },
+-    { buffer: edgeColors,
+-      type: gl.FLOAT,
+-      size: 4
+-    },
+-    { buffer: edgeUVs,
+-      type: gl.FLOAT,
+-      size: 2
+-    }
+-  ])
++  // Create texture for dash pattern
++  var defaultTexture = ndarray(new Array(256 * 4), [256, 1, 4])
++  for (var i = 0; i < 256 * 4; ++i) {
++    defaultTexture.data[i] = 255
++  }
++  var texture = createTexture(gl, defaultTexture)
++  texture.wrap = gl.REPEAT
+ 
+-  var pointPositions  = createBuffer(gl)
+-  var pointColors     = createBuffer(gl)
+-  var pointUVs        = createBuffer(gl)
+-  var pointSizes      = createBuffer(gl)
+-  var pointIds        = createBuffer(gl)
+-  var pointVAO        = createVAO(gl, [
+-    { buffer: pointPositions,
+-      type: gl.FLOAT,
+-      size: 3
+-    },
+-    { buffer: pointIds,
+-      type: gl.UNSIGNED_BYTE,
+-      size: 4,
+-      normalized: true
+-    },
+-    { buffer: pointColors,
+-      type: gl.FLOAT,
+-      size: 4
+-    },
+-    { buffer: pointUVs,
+-      type: gl.FLOAT,
+-      size: 2
+-    },
+-    { buffer: pointSizes,
+-      type: gl.FLOAT,
+-      size: 1
+-    }
+-  ])
++  var linePlot = new LinePlot(gl, shader, pickShader, buffer, vao, texture)
++  linePlot.update(options)
++  return linePlot
++}
+ 
+-  var contourPositions = createBuffer(gl)
+-  var contourVAO       = createVAO(gl, [
+-    { buffer: contourPositions,
+-      type:   gl.FLOAT,
+-      size:   3
+-    }])
++},{"./lib/shaders":101,"binary-search-bounds":34,"gl-buffer":94,"gl-texture2d":144,"gl-vao":148,"glsl-read-float":155,"ndarray":191}],103:[function(require,module,exports){
++module.exports = invert
+ 
+-  var mesh = new SimplicialMesh(gl
+-    , meshTexture
+-    , triShader
+-    , lineShader
+-    , pointShader
+-    , pickShader
+-    , pointPickShader
+-    , contourShader
+-    , trianglePositions
+-    , triangleIds
+-    , triangleColors
+-    , triangleUVs
+-    , triangleNormals
+-    , triangleVAO
+-    , edgePositions
+-    , edgeIds
+-    , edgeColors
+-    , edgeUVs
+-    , edgeVAO
+-    , pointPositions
+-    , pointIds
+-    , pointColors
+-    , pointUVs
+-    , pointSizes
+-    , pointVAO
+-    , contourPositions
+-    , contourVAO)
++/**
++ * Inverts a mat2
++ *
++ * @alias mat2.invert
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++function invert(out, a) {
++  var a0 = a[0]
++  var a1 = a[1]
++  var a2 = a[2]
++  var a3 = a[3]
++  var det = a0 * a3 - a2 * a1
+ 
+-  mesh.update(params)
++  if (!det) return null
++  det = 1.0 / det
+ 
+-  return mesh
+-}
++  out[0] =  a3 * det
++  out[1] = -a1 * det
++  out[2] = -a2 * det
++  out[3] =  a0 * det
+ 
+-module.exports = createSimplicialMesh
++  return out
++}
+ 
+-},{"./lib/closest-point":131,"./lib/shaders":132,"colormap":88,"gl-buffer":105,"gl-mat4/invert":120,"gl-mat4/multiply":122,"gl-shader":164,"gl-texture2d":188,"gl-vao":192,"ndarray":219,"normals":135,"simplicial-complex-contour":137,"typedarray-pool":242}],134:[function(require,module,exports){
+-'use strict'
++},{}],104:[function(require,module,exports){
++module.exports = invert
+ 
+-module.exports = barycentric
++/**
++ * Inverts a mat3
++ *
++ * @alias mat3.invert
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++function invert(out, a) {
++  var a00 = a[0], a01 = a[1], a02 = a[2]
++  var a10 = a[3], a11 = a[4], a12 = a[5]
++  var a20 = a[6], a21 = a[7], a22 = a[8]
+ 
+-var solve = require('robust-linear-solve')
++  var b01 = a22 * a11 - a12 * a21
++  var b11 = -a22 * a10 + a12 * a20
++  var b21 = a21 * a10 - a11 * a20
+ 
+-function reduce(x) {
+-  var r = 0
+-  for(var i=0; i<x.length; ++i) {
+-    r += x[i]
+-  }
+-  return r
+-}
++  // Calculate the determinant
++  var det = a00 * b01 + a01 * b11 + a02 * b21
+ 
+-function barycentric(simplex, point) {
+-  var d = point.length
+-  var A = new Array(d+1)
+-  for(var i=0; i<d; ++i) {
+-    var row = new Array(d+1)
+-    for(var j=0; j<=d; ++j) {
+-      row[j] = simplex[j][i]
+-    }
+-    A[i] = row
+-  }
+-  A[d] = new Array(d+1)
+-  for(var i=0; i<=d; ++i) {
+-    A[d][i] = 1
+-  }
++  if (!det) return null
++  det = 1.0 / det
+ 
+-  var b = new Array(d+1)
+-  for(var i=0; i<d; ++i) {
+-    b[i] = point[i]
+-  }
+-  b[d] = 1.0
++  out[0] = b01 * det
++  out[1] = (-a22 * a01 + a02 * a21) * det
++  out[2] = (a12 * a01 - a02 * a11) * det
++  out[3] = b11 * det
++  out[4] = (a22 * a00 - a02 * a20) * det
++  out[5] = (-a12 * a00 + a02 * a10) * det
++  out[6] = b21 * det
++  out[7] = (-a21 * a00 + a01 * a20) * det
++  out[8] = (a11 * a00 - a01 * a10) * det
+ 
+-  var x = solve(A, b)
+-  var w = reduce(x[d+1])
+-  
+-  if(w === 0) {
+-    w = 1.0
+-  }
+-  var y = new Array(d+1)
+-  for(var i=0; i<=d; ++i) {
+-    y[i] = reduce(x[i]) / w
+-  }
+-  return y
++  return out
+ }
+-},{"robust-linear-solve":222}],135:[function(require,module,exports){
+-var DEFAULT_NORMALS_EPSILON = 1e-6;
+-var DEFAULT_FACE_EPSILON = 1e-6;
+ 
+-//Estimate the vertex normals of a mesh
+-exports.vertexNormals = function(faces, positions, specifiedEpsilon) {
++},{}],105:[function(require,module,exports){
++module.exports = clone;
++
++/**
++ * Creates a new mat4 initialized with values from an existing matrix
++ *
++ * @param {mat4} a matrix to clone
++ * @returns {mat4} a new 4x4 matrix
++ */
++function clone(a) {
++    var out = new Float32Array(16);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    out[9] = a[9];
++    out[10] = a[10];
++    out[11] = a[11];
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
++},{}],106:[function(require,module,exports){
++module.exports = create;
+ 
+-  var N         = positions.length;
+-  var normals   = new Array(N);
+-  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_NORMALS_EPSILON : specifiedEpsilon;
++/**
++ * Creates a new identity mat4
++ *
++ * @returns {mat4} a new 4x4 matrix
++ */
++function create() {
++    var out = new Float32Array(16);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
++},{}],107:[function(require,module,exports){
++module.exports = determinant;
+ 
+-  //Initialize normal array
+-  for(var i=0; i<N; ++i) {
+-    normals[i] = [0.0, 0.0, 0.0];
+-  }
++/**
++ * Calculates the determinant of a mat4
++ *
++ * @param {mat4} a the source matrix
++ * @returns {Number} determinant of a
++ */
++function determinant(a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-  //Walk over all the faces and add per-vertex contribution to normal weights
+-  for(var i=0; i<faces.length; ++i) {
+-    var f = faces[i];
+-    var p = 0;
+-    var c = f[f.length-1];
+-    var n = f[0];
+-    for(var j=0; j<f.length; ++j) {
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32;
+ 
+-      //Shift indices back
+-      p = c;
+-      c = n;
+-      n = f[(j+1) % f.length];
++    // Calculate the determinant
++    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++};
++},{}],108:[function(require,module,exports){
++module.exports = fromQuat;
+ 
+-      var v0 = positions[p];
+-      var v1 = positions[c];
+-      var v2 = positions[n];
++/**
++ * Creates a matrix from a quaternion rotation.
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @returns {mat4} out
++ */
++function fromQuat(out, q) {
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-      //Compute infineteismal arcs
+-      var d01 = new Array(3);
+-      var m01 = 0.0;
+-      var d21 = new Array(3);
+-      var m21 = 0.0;
+-      for(var k=0; k<3; ++k) {
+-        d01[k] = v0[k]  - v1[k];
+-        m01   += d01[k] * d01[k];
+-        d21[k] = v2[k]  - v1[k];
+-        m21   += d21[k] * d21[k];
+-      }
++        xx = x * x2,
++        yx = y * x2,
++        yy = y * y2,
++        zx = z * x2,
++        zy = z * y2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-      //Accumulate values in normal
+-      if(m01 * m21 > epsilon) {
+-        var norm = normals[c];
+-        var w = 1.0 / Math.sqrt(m01 * m21);
+-        for(var k=0; k<3; ++k) {
+-          var u = (k+1)%3;
+-          var v = (k+2)%3;
+-          norm[k] += w * (d21[u] * d01[v] - d21[v] * d01[u]);
+-        }
+-      }
+-    }
+-  }
++    out[0] = 1 - yy - zz;
++    out[1] = yx + wz;
++    out[2] = zx - wy;
++    out[3] = 0;
+ 
+-  //Scale all normals to unit length
+-  for(var i=0; i<N; ++i) {
+-    var norm = normals[i];
+-    var m = 0.0;
+-    for(var k=0; k<3; ++k) {
+-      m += norm[k] * norm[k];
+-    }
+-    if(m > epsilon) {
+-      var w = 1.0 / Math.sqrt(m);
+-      for(var k=0; k<3; ++k) {
+-        norm[k] *= w;
+-      }
+-    } else {
+-      for(var k=0; k<3; ++k) {
+-        norm[k] = 0.0;
+-      }
+-    }
+-  }
++    out[4] = yx - wz;
++    out[5] = 1 - xx - zz;
++    out[6] = zy + wx;
++    out[7] = 0;
+ 
+-  //Return the resulting set of patches
+-  return normals;
+-}
++    out[8] = zx + wy;
++    out[9] = zy - wx;
++    out[10] = 1 - xx - yy;
++    out[11] = 0;
+ 
+-//Compute face normals of a mesh
+-exports.faceNormals = function(faces, positions, specifiedEpsilon) {
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
+ 
+-  var N         = faces.length;
+-  var normals   = new Array(N);
+-  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_FACE_EPSILON : specifiedEpsilon;
++    return out;
++};
++},{}],109:[function(require,module,exports){
++module.exports = fromRotationTranslation;
+ 
+-  for(var i=0; i<N; ++i) {
+-    var f = faces[i];
+-    var pos = new Array(3);
+-    for(var j=0; j<3; ++j) {
+-      pos[j] = positions[f[j]];
+-    }
++/**
++ * Creates a matrix from a quaternion rotation and vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @returns {mat4} out
++ */
++function fromRotationTranslation(out, q, v) {
++    // Quaternion math
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-    var d01 = new Array(3);
+-    var d21 = new Array(3);
+-    for(var j=0; j<3; ++j) {
+-      d01[j] = pos[1][j] - pos[0][j];
+-      d21[j] = pos[2][j] - pos[0][j];
+-    }
++        xx = x * x2,
++        xy = x * y2,
++        xz = x * z2,
++        yy = y * y2,
++        yz = y * z2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-    var n = new Array(3);
+-    var l = 0.0;
+-    for(var j=0; j<3; ++j) {
+-      var u = (j+1)%3;
+-      var v = (j+2)%3;
+-      n[j] = d01[u] * d21[v] - d01[v] * d21[u];
+-      l += n[j] * n[j];
+-    }
+-    if(l > epsilon) {
+-      l = 1.0 / Math.sqrt(l);
+-    } else {
+-      l = 0.0;
+-    }
+-    for(var j=0; j<3; ++j) {
+-      n[j] *= l;
+-    }
+-    normals[i] = n;
+-  }
+-  return normals;
+-}
++    out[0] = 1 - (yy + zz);
++    out[1] = xy + wz;
++    out[2] = xz - wy;
++    out[3] = 0;
++    out[4] = xy - wz;
++    out[5] = 1 - (xx + zz);
++    out[6] = yz + wx;
++    out[7] = 0;
++    out[8] = xz + wy;
++    out[9] = yz - wx;
++    out[10] = 1 - (xx + yy);
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
++    
++    return out;
++};
++},{}],110:[function(require,module,exports){
++module.exports = identity;
+ 
++/**
++ * Set a mat4 to the identity matrix
++ *
++ * @param {mat4} out the receiving matrix
++ * @returns {mat4} out
++ */
++function identity(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
++},{}],111:[function(require,module,exports){
++module.exports = invert;
+ 
++/**
++ * Inverts a mat4
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++function invert(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-},{}],136:[function(require,module,exports){
+-//Optimized version for triangle closest point
+-// Based on Eberly's WildMagick codes
+-// http://www.geometrictools.com/LibMathematics/Distance/Distance.html
+-"use strict";
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32,
+ 
+-var diff = new Float64Array(4);
+-var edge0 = new Float64Array(4);
+-var edge1 = new Float64Array(4);
++        // Calculate the determinant
++        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+ 
+-function closestPoint2d(V0, V1, V2, point, result) {
+-  //Reallocate buffers if necessary
+-  if(diff.length < point.length) {
+-    diff = new Float64Array(point.length);
+-    edge0 = new Float64Array(point.length);
+-    edge1 = new Float64Array(point.length);
+-  }
+-  //Compute edges
+-  for(var i=0; i<point.length; ++i) {
+-    diff[i]  = V0[i] - point[i];
+-    edge0[i] = V1[i] - V0[i];
+-    edge1[i] = V2[i] - V0[i];
+-  }
+-  //Compute coefficients for quadratic func
+-  var a00 = 0.0
+-    , a01 = 0.0
+-    , a11 = 0.0
+-    , b0  = 0.0
+-    , b1  = 0.0
+-    , c   = 0.0;
+-  for(var i=0; i<point.length; ++i) {
+-    var e0 = edge0[i]
+-      , e1 = edge1[i]
+-      , d  = diff[i];
+-    a00 += e0 * e0;
+-    a01 += e0 * e1;
+-    a11 += e1 * e1;
+-    b0  += d * e0;
+-    b1  += d * e1;
+-    c   += d * d;
+-  }
+-  //Compute determinant/coeffs
+-  var det = Math.abs(a00*a11 - a01*a01);
+-  var s   = a01*b1 - a11*b0;
+-  var t   = a01*b0 - a00*b1;
+-  var sqrDistance;
+-  //Hardcoded Voronoi diagram classification
+-  if (s + t <= det) {
+-    if (s < 0) {
+-      if (t < 0) { // region 4
+-        if (b0 < 0) {
+-          t = 0;
+-          if (-b0 >= a00) {
+-            s = 1.0;
+-            sqrDistance = a00 + 2.0*b0 + c;
+-          } else {
+-            s = -b0/a00;
+-            sqrDistance = b0*s + c;
+-          }
+-        } else {
+-          s = 0;
+-          if (b1 >= 0) {
+-            t = 0;
+-            sqrDistance = c;
+-          } else if (-b1 >= a11) {
+-            t = 1;
+-            sqrDistance = a11 + 2.0*b1 + c;
+-          } else {
+-            t = -b1/a11;
+-            sqrDistance = b1*t + c;
+-          }
+-        }
+-      } else {  // region 3
+-        s = 0;
+-        if (b1 >= 0) {
+-          t = 0;
+-          sqrDistance = c;
+-        } else if (-b1 >= a11) {
+-          t = 1;
+-          sqrDistance = a11 + 2.0*b1 + c;
+-        } else {
+-          t = -b1/a11;
+-          sqrDistance = b1*t + c;
+-        }
+-      }
+-    } else if (t < 0) { // region 5
+-      t = 0;
+-      if (b0 >= 0) {
+-        s = 0;
+-        sqrDistance = c;
+-      } else if (-b0 >= a00) {
+-        s = 1;
+-        sqrDistance = a00 + 2.0*b0 + c;
+-      } else {
+-        s = -b0/a00;
+-        sqrDistance = b0*s + c;
+-      }
+-    } else {  // region 0
+-      // minimum at interior point
+-      var invDet = 1.0 / det;
+-      s *= invDet;
+-      t *= invDet;
+-      sqrDistance = s*(a00*s + a01*t + 2.0*b0) + t*(a01*s + a11*t + 2.0*b1) + c;
+-    }
+-  } else {
+-    var tmp0, tmp1, numer, denom;
+-    
+-    if (s < 0) {  // region 2
+-      tmp0 = a01 + b0;
+-      tmp1 = a11 + b1;
+-      if (tmp1 > tmp0) {
+-        numer = tmp1 - tmp0;
+-        denom = a00 - 2.0*a01 + a11;
+-        if (numer >= denom) {
+-          s = 1;
+-          t = 0;
+-          sqrDistance = a00 + 2.0*b0 + c;
+-        } else {
+-          s = numer/denom;
+-          t = 1 - s;
+-          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
+-          t*(a01*s + a11*t + 2.0*b1) + c;
+-        }
+-      } else {
+-        s = 0;
+-        if (tmp1 <= 0) {
+-          t = 1;
+-          sqrDistance = a11 + 2.0*b1 + c;
+-        } else if (b1 >= 0) {
+-          t = 0;
+-          sqrDistance = c;
+-        } else {
+-          t = -b1/a11;
+-          sqrDistance = b1*t + c;
+-        }
+-      }
+-    } else if (t < 0) {  // region 6
+-      tmp0 = a01 + b1;
+-      tmp1 = a00 + b0;
+-      if (tmp1 > tmp0) {
+-        numer = tmp1 - tmp0;
+-        denom = a00 - 2.0*a01 + a11;
+-        if (numer >= denom) {
+-          t = 1;
+-          s = 0;
+-          sqrDistance = a11 + 2.0*b1 + c;
+-        } else {
+-          t = numer/denom;
+-          s = 1 - t;
+-          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
+-          t*(a01*s + a11*t + 2.0*b1) + c;
+-        }
+-      } else {
+-        t = 0;
+-        if (tmp1 <= 0) {
+-          s = 1;
+-          sqrDistance = a00 + 2.0*b0 + c;
+-        } else if (b0 >= 0) {
+-          s = 0;
+-          sqrDistance = c;
+-        } else {
+-          s = -b0/a00;
+-          sqrDistance = b0*s + c;
+-        }
+-      }
+-    } else {  // region 1
+-      numer = a11 + b1 - a01 - b0;
+-      if (numer <= 0) {
+-        s = 0;
+-        t = 1;
+-        sqrDistance = a11 + 2.0*b1 + c;
+-      } else {
+-        denom = a00 - 2.0*a01 + a11;
+-        if (numer >= denom) {
+-          s = 1;
+-          t = 0;
+-          sqrDistance = a00 + 2.0*b0 + c;
+-        } else {
+-          s = numer/denom;
+-          t = 1 - s;
+-          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
+-          t*(a01*s + a11*t + 2.0*b1) + c;
+-        }
+-      }
++    if (!det) { 
++        return null; 
+     }
+-  }
+-  var u = 1.0 - s - t;
+-  for(var i=0; i<point.length; ++i) {
+-    result[i] = u * V0[i] + s * V1[i] + t * V2[i];
+-  }
+-  if(sqrDistance < 0) {
+-    return 0;
+-  }
+-  return sqrDistance;
+-}
++    det = 1.0 / det;
+ 
+-module.exports = closestPoint2d;
++    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
++    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
++    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
++    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
++    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
++    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
++    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
++    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
++    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
++    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
++    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
++    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
++    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
++    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
++    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
++    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
+ 
+-},{}],137:[function(require,module,exports){
+-'use strict'
++    return out;
++};
++},{}],112:[function(require,module,exports){
++var identity = require('./identity');
+ 
+-module.exports = extractContour
++module.exports = lookAt;
+ 
+-var ndarray = require('ndarray')
+-var pool    = require('typedarray-pool')
+-var ndsort  = require('ndarray-sort')
++/**
++ * Generates a look-at matrix with the given eye position, focal point, and up axis
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {vec3} eye Position of the viewer
++ * @param {vec3} center Point the viewer is looking at
++ * @param {vec3} up vec3 pointing up
++ * @returns {mat4} out
++ */
++function lookAt(out, eye, center, up) {
++    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
++        eyex = eye[0],
++        eyey = eye[1],
++        eyez = eye[2],
++        upx = up[0],
++        upy = up[1],
++        upz = up[2],
++        centerx = center[0],
++        centery = center[1],
++        centerz = center[2];
+ 
+-var contourAlgorithm = require('./lib/codegen')
++    if (Math.abs(eyex - centerx) < 0.000001 &&
++        Math.abs(eyey - centery) < 0.000001 &&
++        Math.abs(eyez - centerz) < 0.000001) {
++        return identity(out);
++    }
+ 
+-function getDimension(cells) {
+-  var numCells = cells.length
+-  var d = 0
+-  for(var i=0; i<numCells; ++i) {
+-    d = Math.max(d, cells[i].length)|0
+-  }
+-  return d-1
+-}
++    z0 = eyex - centerx;
++    z1 = eyey - centery;
++    z2 = eyez - centerz;
+ 
+-function getSigns(values, level) {
+-  var numVerts    = values.length
+-  var vertexSigns = pool.mallocUint8(numVerts)
+-  for(var i=0; i<numVerts; ++i) {
+-    vertexSigns[i] = (values[i] < level)|0
+-  }
+-  return vertexSigns
+-}
++    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
++    z0 *= len;
++    z1 *= len;
++    z2 *= len;
+ 
+-function getEdges(cells, d) {
+-  var numCells = cells.length
+-  var maxEdges = ((d * (d+1)/2) * numCells)|0
+-  var edges    = pool.mallocUint32(maxEdges*2)
+-  var ePtr     = 0
+-  for(var i=0; i<numCells; ++i) {
+-    var c = cells[i]
+-    var d = c.length
+-    for(var j=0; j<d; ++j) {
+-      for(var k=0; k<j; ++k) {
+-        var a = c[k]
+-        var b = c[j]
+-        edges[ePtr++] = Math.min(a,b)|0
+-        edges[ePtr++] = Math.max(a,b)|0
+-      }
+-    }
+-  }
+-  var nedges = (ePtr/2)|0
+-  ndsort(ndarray(edges, [nedges,2])) 
+-  var ptr = 2
+-  for(var i=2; i<ePtr; i+=2) {
+-    if(edges[i-2] === edges[i] &&
+-       edges[i-1] === edges[i+1]) {
+-      continue
++    x0 = upy * z2 - upz * z1;
++    x1 = upz * z0 - upx * z2;
++    x2 = upx * z1 - upy * z0;
++    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
++    if (!len) {
++        x0 = 0;
++        x1 = 0;
++        x2 = 0;
++    } else {
++        len = 1 / len;
++        x0 *= len;
++        x1 *= len;
++        x2 *= len;
+     }
+-    edges[ptr++] = edges[i]
+-    edges[ptr++] = edges[i+1]
+-  }
+ 
+-  return ndarray(edges, [(ptr/2)|0, 2])
+-}
++    y0 = z1 * x2 - z2 * x1;
++    y1 = z2 * x0 - z0 * x2;
++    y2 = z0 * x1 - z1 * x0;
+ 
+-function getCrossingWeights(edges, values, signs, level) {
+-  var edata     = edges.data
+-  var numEdges  = edges.shape[0]
+-  var weights   = pool.mallocDouble(numEdges)
+-  var ptr       = 0
+-  for(var i=0; i<numEdges; ++i) {
+-    var a  = edata[2*i]
+-    var b  = edata[2*i+1]
+-    if(signs[a] === signs[b]) {
+-      continue
++    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
++    if (!len) {
++        y0 = 0;
++        y1 = 0;
++        y2 = 0;
++    } else {
++        len = 1 / len;
++        y0 *= len;
++        y1 *= len;
++        y2 *= len;
+     }
+-    var va = values[a]
+-    var vb = values[b]
+-    edata[2*ptr]     = a
+-    edata[2*ptr+1]   = b
+-    weights[ptr++]   = (vb - level) / (vb - va)
+-  }
+-  edges.shape[0] = ptr
+-  return ndarray(weights, [ptr])
+-}
+ 
+-function getCascade(edges, numVerts) {
+-  var result   = pool.mallocInt32(numVerts*2)
+-  var numEdges = edges.shape[0]
+-  var edata    = edges.data
+-  result[0]    = 0
+-  var lastV    = 0
+-  for(var i=0; i<numEdges; ++i) {
+-    var a = edata[2*i]
+-    if(a !== lastV) {
+-      result[2*lastV+1] = i
+-      while(++lastV < a) {
+-        result[2*lastV] = i
+-        result[2*lastV+1] = i
+-      }
+-      result[2*lastV] = i
+-    }
+-  }
+-  result[2*lastV+1] = numEdges
+-  while(++lastV < numVerts) {
+-    result[2*lastV] = result[2*lastV+1] = numEdges
+-  }
+-  return result
+-}
++    out[0] = x0;
++    out[1] = y0;
++    out[2] = z0;
++    out[3] = 0;
++    out[4] = x1;
++    out[5] = y1;
++    out[6] = z1;
++    out[7] = 0;
++    out[8] = x2;
++    out[9] = y2;
++    out[10] = z2;
++    out[11] = 0;
++    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
++    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
++    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
++    out[15] = 1;
+ 
+-function unpackEdges(edges) {
+-  var ne = edges.shape[0]|0
+-  var edata = edges.data
+-  var result = new Array(ne)
+-  for(var i=0; i<ne; ++i) {
+-    result[i] = [edata[2*i], edata[2*i+1]]
+-  }
+-  return result
+-}
++    return out;
++};
++},{"./identity":110}],113:[function(require,module,exports){
++module.exports = multiply;
+ 
+-function extractContour(cells, values, level, d) {
+-  level = level||0.0
++/**
++ * Multiplies two mat4's
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++function multiply(out, a, b) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+ 
+-  //If user didn't specify `d`, use brute force scan
+-  if(typeof d === 'undefined') {
+-    d = getDimension(cells)
+-  }
++    // Cache only the current line of the second matrix
++    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];  
++    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-  //Count number of cells
+-  var numCells = cells.length
+-  if(numCells === 0 || d < 1) {
+-    return {
+-      cells:         [],
+-      vertexIds:     [],
+-      vertexWeights: []
+-    }
+-  }
++    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
++    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-  //Read in vertex signs
+-  var vertexSigns = getSigns(values, +level)
++    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
++    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-  //First get 1-skeleton, find all crossings
+-  var edges   = getEdges(cells, d)
+-  var weights = getCrossingWeights(edges, values, vertexSigns, +level)
++    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
++    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    return out;
++};
++},{}],114:[function(require,module,exports){
++module.exports = perspective;
+ 
+-  //Build vertex cascade to speed up binary search
+-  var vcascade = getCascade(edges, values.length|0)
++/**
++ * Generates a perspective projection matrix with the given bounds
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {number} fovy Vertical field of view in radians
++ * @param {number} aspect Aspect ratio. typically viewport width/height
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++function perspective(out, fovy, aspect, near, far) {
++    var f = 1.0 / Math.tan(fovy / 2),
++        nf = 1 / (near - far);
++    out[0] = f / aspect;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = f;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = (far + near) * nf;
++    out[11] = -1;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = (2 * far * near) * nf;
++    out[15] = 0;
++    return out;
++};
++},{}],115:[function(require,module,exports){
++module.exports = rotate;
+ 
+-  //Then construct cells
+-  var faces = contourAlgorithm(d)(cells, edges.data, vcascade, vertexSigns)
++/**
++ * Rotates a mat4 by the given angle
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @param {vec3} axis the axis to rotate around
++ * @returns {mat4} out
++ */
++function rotate(out, a, rad, axis) {
++    var x = axis[0], y = axis[1], z = axis[2],
++        len = Math.sqrt(x * x + y * y + z * z),
++        s, c, t,
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23,
++        b00, b01, b02,
++        b10, b11, b12,
++        b20, b21, b22;
+ 
+-  //Unpack data into pretty format
+-  var uedges   = unpackEdges(edges)
+-  var uweights = [].slice.call(weights.data, 0, weights.shape[0])
++    if (Math.abs(len) < 0.000001) { return null; }
++    
++    len = 1 / len;
++    x *= len;
++    y *= len;
++    z *= len;
+ 
+-  //Release data
+-  pool.free(vertexSigns)
+-  pool.free(edges.data)
+-  pool.free(weights.data)
+-  pool.free(vcascade)
+-  
+-  return {
+-    cells:         faces,
+-    vertexIds:     uedges,
+-    vertexWeights: uweights
+-  }
+-}
+-},{"./lib/codegen":138,"ndarray":219,"ndarray-sort":141,"typedarray-pool":242}],138:[function(require,module,exports){
+-'use strict'
++    s = Math.sin(rad);
++    c = Math.cos(rad);
++    t = 1 - c;
+ 
+-module.exports = getPolygonizer
++    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-var pool = require('typedarray-pool')
+-var createMSTable = require('marching-simplex-table')
++    // Construct the elements of the rotation matrix
++    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
++    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
++    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
+ 
+-var CACHE = {}
++    // Perform rotation-specific matrix multiplication
++    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
++    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
++    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
++    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
++    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
++    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
++    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
++    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
++    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
++    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
++    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
++    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
+ 
+-function createCellPolygonizer(d) {
+-  var maxCellSize = 0
+-  var tables = new Array(d+1)
+-  tables[0] = [ [] ]
+-  for(var i=1; i<=d; ++i) {
+-    var tab = tables[i] = createMSTable(i)
+-    for(var j=0; j<tab.length; ++j) {
+-      maxCellSize = Math.max(maxCellSize, tab[i].length)
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+-  }
++    return out;
++};
++},{}],116:[function(require,module,exports){
++module.exports = rotateX;
+ 
+-  var code  = [
+-  'function B(C,E,i,j){',
+-    'var a=Math.min(i,j)|0,b=Math.max(i,j)|0,l=C[2*a],h=C[2*a+1];',
+-    'while(l<h){',
+-      'var m=(l+h)>>1,v=E[2*m+1];',
+-      'if(v===b){return m}',
+-      'if(b<v){h=m}else{l=m+1}',
+-    '}',
+-    'return l;',
+-  '};',
+-  'function getContour', d, 'd(F,E,C,S){',
+-    'var n=F.length,R=[];',
+-    'for(var i=0;i<n;++i){var c=F[i],l=c.length;'
+-  ]
++/**
++ * Rotates a matrix by the given angle around the X axis
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++function rotateX(out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
+ 
+-  function generateCase(facets) {
+-    if(facets.length <= 0) {
+-      return
+-    }
+-    code.push('R.push(')
+-    for(var i=0; i<facets.length; ++i) {
+-      var facet = facets[i]
+-      if(i > 0) {
+-        code.push(',')
+-      }
+-      code.push('[')
+-      for(var j=0; j<facet.length; ++j) {
+-        var f = facet[j]
+-        if(j > 0) {
+-          code.push(',')
+-        }
+-        code.push('B(C,E,c[', f[0], '],c[', f[1], '])')
+-      }
+-      code.push(']')
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[0]  = a[0];
++        out[1]  = a[1];
++        out[2]  = a[2];
++        out[3]  = a[3];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+-    code.push(');')
+-  }
+ 
+-  for(var i=d+1; i>1; --i) {
+-    if(i < d+1) {
+-      code.push('else ')
++    // Perform axis-specific matrix multiplication
++    out[4] = a10 * c + a20 * s;
++    out[5] = a11 * c + a21 * s;
++    out[6] = a12 * c + a22 * s;
++    out[7] = a13 * c + a23 * s;
++    out[8] = a20 * c - a10 * s;
++    out[9] = a21 * c - a11 * s;
++    out[10] = a22 * c - a12 * s;
++    out[11] = a23 * c - a13 * s;
++    return out;
++};
++},{}],117:[function(require,module,exports){
++module.exports = rotateY;
++
++/**
++ * Rotates a matrix by the given angle around the Y axis
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++function rotateY(out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
++
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[4]  = a[4];
++        out[5]  = a[5];
++        out[6]  = a[6];
++        out[7]  = a[7];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+-    code.push('if(l===', i, '){')
+ 
+-    //Generate mask
+-    var maskStr = []
+-    for(var j=0; j<i; ++j) {
+-      maskStr.push('(S[c['+j+']]<<'+j+')')
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c - a20 * s;
++    out[1] = a01 * c - a21 * s;
++    out[2] = a02 * c - a22 * s;
++    out[3] = a03 * c - a23 * s;
++    out[8] = a00 * s + a20 * c;
++    out[9] = a01 * s + a21 * c;
++    out[10] = a02 * s + a22 * c;
++    out[11] = a03 * s + a23 * c;
++    return out;
++};
++},{}],118:[function(require,module,exports){
++module.exports = rotateZ;
++
++/**
++ * Rotates a matrix by the given angle around the Z axis
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++function rotateZ(out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7];
++
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[8]  = a[8];
++        out[9]  = a[9];
++        out[10] = a[10];
++        out[11] = a[11];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+ 
+-    //Perform table look up
+-    code.push('var M=', maskStr.join('+'), 
+-      ';if(M===0||M===', (1<<i)-1, 
+-        '){continue}switch(M){')
+-
+-    var tab = tables[i-1]
+-    for(var j=0; j<tab.length; ++j) {
+-      code.push('case ', j, ':')
+-      generateCase(tab[j])
+-      code.push('break;')
+-    }
+-    code.push('}}')
+-  }
+-  code.push('}return R;};return getContour', d, 'd')
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c + a10 * s;
++    out[1] = a01 * c + a11 * s;
++    out[2] = a02 * c + a12 * s;
++    out[3] = a03 * c + a13 * s;
++    out[4] = a10 * c - a00 * s;
++    out[5] = a11 * c - a01 * s;
++    out[6] = a12 * c - a02 * s;
++    out[7] = a13 * c - a03 * s;
++    return out;
++};
++},{}],119:[function(require,module,exports){
++module.exports = scale;
+ 
+-  var proc = new Function('pool', code.join(''))
+-  return proc(pool)
+-}
++/**
++ * Scales the mat4 by the dimensions in the given vec3
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ **/
++function scale(out, a, v) {
++    var x = v[0], y = v[1], z = v[2];
+ 
+-function getPolygonizer(d) {
+-  var alg = CACHE[d]
+-  if(!alg) {
+-    alg = CACHE[d] = createCellPolygonizer(d) 
+-  }
+-  return alg
+-}
+-},{"marching-simplex-table":139,"typedarray-pool":242}],139:[function(require,module,exports){
+-'use strict'
++    out[0] = a[0] * x;
++    out[1] = a[1] * x;
++    out[2] = a[2] * x;
++    out[3] = a[3] * x;
++    out[4] = a[4] * y;
++    out[5] = a[5] * y;
++    out[6] = a[6] * y;
++    out[7] = a[7] * y;
++    out[8] = a[8] * z;
++    out[9] = a[9] * z;
++    out[10] = a[10] * z;
++    out[11] = a[11] * z;
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
++},{}],120:[function(require,module,exports){
++module.exports = translate;
+ 
+-module.exports = createTable
++/**
++ * Translate a mat4 by the given vector
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
++ */
++function translate(out, a, v) {
++    var x = v[0], y = v[1], z = v[2],
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23;
+ 
+-var chull = require('convex-hull')
++    if (a === out) {
++        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
++        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
++        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
++        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
++    } else {
++        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-function constructVertex(d, a, b) {
+-  var x = new Array(d)
+-  for(var i=0; i<d; ++i) {
+-    x[i] = 0.0
+-    if(i === a) {
+-      x[i] += 0.5
+-    }
+-    if(i === b) {
+-      x[i] += 0.5
+-    }
+-  }
+-  return x
+-}
++        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
++        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
++        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
+ 
+-function constructCell(dimension, mask) {
+-  if(mask === 0 || mask === (1<<(dimension+1))-1) {
+-    return []
+-  }
+-  var points = []
+-  var index  = []
+-  for(var i=0; i<=dimension; ++i) {
+-    if(mask & (1<<i)) {
+-      points.push(constructVertex(dimension, i-1, i-1))
+-      index.push(null)
+-      for(var j=0; j<=dimension; ++j) {
+-        if(~mask & (1<<j)) {
+-          points.push(constructVertex(dimension, i-1, j-1))
+-          index.push([i,j])
+-        }
+-      }
+-    }
+-  }
+-  
+-  //Preprocess points so first d+1 points are linearly independent
+-  var hull = chull(points)
+-  var faces = []
+-i_loop:
+-  for(var i=0; i<hull.length; ++i) {
+-    var face = hull[i]
+-    var nface = []
+-    for(var j=0; j<face.length; ++j) {
+-      if(!index[face[j]]) {
+-        continue i_loop
+-      }
+-      nface.push(index[face[j]].slice())
++        out[12] = a00 * x + a10 * y + a20 * z + a[12];
++        out[13] = a01 * x + a11 * y + a21 * z + a[13];
++        out[14] = a02 * x + a12 * y + a22 * z + a[14];
++        out[15] = a03 * x + a13 * y + a23 * z + a[15];
+     }
+-    faces.push(nface)
+-  }
+-  return faces
+-}
+-
+-function createTable(dimension) {
+-  var numCells = 1<<(dimension+1)
+-  var result = new Array(numCells)
+-  for(var i=0; i<numCells; ++i) {
+-    result[i] = constructCell(dimension, i)
+-  }
+-  return result
+-}
+-},{"convex-hull":90}],140:[function(require,module,exports){
+-"use strict"
+-
+-var pool = require("typedarray-pool")
+-
+-var INSERTION_SORT_THRESHOLD = 32
+-
+-function getMallocFree(dtype) {
+-  switch(dtype) {
+-    case "uint8":
+-      return [pool.mallocUint8, pool.freeUint8]
+-    case "uint16":
+-      return [pool.mallocUint16, pool.freeUint16]
+-    case "uint32":
+-      return [pool.mallocUint32, pool.freeUint32]
+-    case "int8":
+-      return [pool.mallocInt8, pool.freeInt8]
+-    case "int16":
+-      return [pool.mallocInt16, pool.freeInt16]
+-    case "int32":
+-      return [pool.mallocInt32, pool.freeInt32]
+-    case "float32":
+-      return [pool.mallocFloat, pool.freeFloat]
+-    case "float64":
+-      return [pool.mallocDouble, pool.freeDouble]
+-    default:
+-      return null
+-  }
+-}
+ 
+-function shapeArgs(dimension) {
+-  var args = []
+-  for(var i=0; i<dimension; ++i) {
+-    args.push("s"+i)
+-  }
+-  for(var i=0; i<dimension; ++i) {
+-    args.push("n"+i)
+-  }
+-  for(var i=1; i<dimension; ++i) {
+-    args.push("d"+i)
+-  }
+-  for(var i=1; i<dimension; ++i) {
+-    args.push("e"+i)
+-  }
+-  for(var i=1; i<dimension; ++i) {
+-    args.push("f"+i)
+-  }
+-  return args
+-}
++    return out;
++};
++},{}],121:[function(require,module,exports){
++module.exports = transpose;
+ 
+-function createInsertionSort(order, dtype) {
++/**
++ * Transpose the values of a mat4
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++function transpose(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a01 = a[1], a02 = a[2], a03 = a[3],
++            a12 = a[6], a13 = a[7],
++            a23 = a[11];
+ 
+-  var code = ["'use strict'"]
+-  var funcName = ["ndarrayInsertionSort", order.join("d"), dtype].join("")
+-  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
+-  var allocator = getMallocFree(dtype)
+-  
+-  var vars = [ "i,j,cptr,ptr=left*s0+offset" ]
+-  
+-  if(order.length > 1) {
+-    var scratch_shape = []
+-    for(var i=1; i<order.length; ++i) {
+-      vars.push("i"+i)
+-      scratch_shape.push("n"+i)
+-    }
+-    if(allocator) {
+-      vars.push("scratch=malloc(" + scratch_shape.join("*") + ")")
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a01;
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a02;
++        out[9] = a12;
++        out[11] = a[14];
++        out[12] = a03;
++        out[13] = a13;
++        out[14] = a23;
+     } else {
+-      vars.push("scratch=new Array("+scratch_shape.join("*") + ")")
+-    }
+-    vars.push("dptr","sptr","a","b")
+-  } else {
+-    vars.push("scratch")
+-  }
+-  
+-  function dataRead(ptr) {
+-    if(dtype === "generic") {
+-      return ["data.get(", ptr, ")"].join("")
+-    }
+-    return ["data[",ptr,"]"].join("")
+-  }
+-  
+-  function dataWrite(ptr, v) {
+-    if(dtype === "generic") {
+-      return ["data.set(", ptr, ",", v, ")"].join("")
+-    }
+-    return ["data[",ptr,"]=",v].join("")
+-  }
+-  
+-  //Create function header
+-  code.push(
+-    ["function ", funcName, "(", funcArgs.join(","), "){var ", vars.join(",")].join(""),
+-      "for(i=left+1;i<=right;++i){",
+-        "j=i;ptr+=s0",
+-        "cptr=ptr")
+-  
+-  
+-  if(order.length > 1) {
+-  
+-    //Copy data into scratch
+-    code.push("dptr=0;sptr=ptr")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    code.push("scratch[dptr++]=",dataRead("sptr"))
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push("sptr+=d"+j,"}")
+-    }
+-
+-    
+-    //Compare items in outer loop
+-    code.push("__g:while(j-->left){",
+-              "dptr=0",
+-              "sptr=cptr-s0")
+-    for(var i=1; i<order.length; ++i) {
+-      if(i === 1) {
+-        code.push("__l:")
+-      }
+-      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
+-    }
+-    code.push(["a=", dataRead("sptr"),"\nb=scratch[dptr]\nif(a<b){break __g}\nif(a>b){break __l}"].join(""))
+-    for(var i=order.length-1; i>=1; --i) {
+-      code.push(
+-        "sptr+=e"+i,
+-        "dptr+=f"+i,
+-        "}")
+-    }
+-    
+-    //Copy data back
+-    code.push("dptr=cptr;sptr=cptr-s0")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    code.push(dataWrite("dptr", dataRead("sptr")))
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["dptr+=d",j,";sptr+=d",j].join(""),"}")
++        out[0] = a[0];
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a[1];
++        out[5] = a[5];
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a[2];
++        out[9] = a[6];
++        out[10] = a[10];
++        out[11] = a[14];
++        out[12] = a[3];
++        out[13] = a[7];
++        out[14] = a[11];
++        out[15] = a[15];
+     }
+     
+-    //Close while loop
+-    code.push("cptr-=s0\n}")
++    return out;
++};
++},{}],122:[function(require,module,exports){
++'use strict'
+ 
+-    //Copy scratch into cptr
+-    code.push("dptr=cptr;sptr=0")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    code.push(dataWrite("dptr", "scratch[sptr++]"))
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push("dptr+=d"+j,"}")
+-    }
+-  } else {
+-    code.push("scratch=" + dataRead("ptr"),
+-              "while((j-->left)&&("+dataRead("cptr-s0")+">scratch)){",
+-                dataWrite("cptr", dataRead("cptr-s0")),
+-                "cptr-=s0",
+-              "}",
+-              dataWrite("cptr", "scratch"))
+-  }
+-  
+-  //Close outer loop body
+-  code.push("}")
+-  if(order.length > 1 && allocator) {
+-    code.push("free(scratch)")
+-  }
+-  code.push("} return " + funcName)
+-  
+-  //Compile and link function
+-  if(allocator) {
+-    var result = new Function("malloc", "free", code.join("\n"))
+-    return result(allocator[0], allocator[1])
+-  } else {
+-    var result = new Function(code.join("\n"))
+-    return result()
+-  }
+-}
++module.exports = invert
+ 
+-function createQuickSort(order, dtype, insertionSort) {
+-  var code = [ "'use strict'" ]
+-  var funcName = ["ndarrayQuickSort", order.join("d"), dtype].join("")
+-  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
+-  var allocator = getMallocFree(dtype)
+-  var labelCounter=0
+-  
+-  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
+-  
+-  var vars = [
+-    "sixth=((right-left+1)/6)|0",
+-    "index1=left+sixth",
+-    "index5=right-sixth",
+-    "index3=(left+right)>>1",
+-    "index2=index3-sixth",
+-    "index4=index3+sixth",
+-    "el1=index1",
+-    "el2=index2",
+-    "el3=index3",
+-    "el4=index4",
+-    "el5=index5",
+-    "less=left+1",
+-    "great=right-1",
+-    "pivots_are_equal=true",
+-    "tmp",
+-    "tmp0",
+-    "x",
+-    "y",
+-    "z",
+-    "k",
+-    "ptr0",
+-    "ptr1",
+-    "ptr2",
+-    "comp_pivot1=0",
+-    "comp_pivot2=0",
+-    "comp=0"
+-  ]
+-  
+-  if(order.length > 1) {
+-    var ele_size = []
+-    for(var i=1; i<order.length; ++i) {
+-      ele_size.push("n"+i)
+-      vars.push("i"+i)
+-    }
+-    for(var i=0; i<8; ++i) {
+-      vars.push("b_ptr"+i)
+-    }
+-    vars.push(
+-      "ptr3",
+-      "ptr4",
+-      "ptr5",
+-      "ptr6",
+-      "ptr7",
+-      "pivot_ptr",
+-      "ptr_shift",
+-      "elementSize="+ele_size.join("*"))
+-    if(allocator) {
+-      vars.push("pivot1=malloc(elementSize)",
+-                "pivot2=malloc(elementSize)")
+-    } else {
+-      vars.push("pivot1=new Array(elementSize),pivot2=new Array(elementSize)")
+-    }
+-  } else {
+-    vars.push("pivot1", "pivot2")
+-  }
+-  
+-  //Initialize local variables
+-  code.push("var " + vars.join(","))
+-  
+-  function toPointer(v) {
+-    return ["(offset+",v,"*s0)"].join("")
+-  }
+-  
+-  function dataRead(ptr) {
+-    if(dtype === "generic") {
+-      return ["data.get(", ptr, ")"].join("")
+-    }
+-    return ["data[",ptr,"]"].join("")
++var invert2 = require('gl-mat2/invert')
++var invert3 = require('gl-mat3/invert')
++var invert4 = require('gl-mat4/invert')
++
++function invert(out, M) {
++  switch(M.length) {
++    case 0:
++    break
++    case 1:
++      out[0] = 1.0 / M[0]
++    break
++    case 4:
++      invert2(out, M)
++    break
++    case 9:
++      invert3(out, M)
++    break
++    case 16:
++      invert4(out, M)
++    break
++    default:
++      throw new Error('currently supports matrices up to 4x4')
++    break
+   }
+-  
+-  function dataWrite(ptr, v) {
+-    if(dtype === "generic") {
+-      return ["data.set(", ptr, ",", v, ")"].join("")
++  return out
++}
++},{"gl-mat2/invert":103,"gl-mat3/invert":104,"gl-mat4/invert":111}],123:[function(require,module,exports){
++'use strict'
++
++var barycentric            = require('barycentric')
++var closestPointToTriangle = require('polytope-closest-point/lib/closest_point_2d.js')
++
++module.exports = closestPointToPickLocation
++
++function xformMatrix(m, v) {
++  var out = [0,0,0,0]
++  for(var i=0; i<4; ++i) {
++    for(var j=0; j<4; ++j) {
++      out[j] += m[4*i + j] * v[i]
+     }
+-    return ["data[",ptr,"]=",v].join("")
+   }
+-  
+-  function cacheLoop(ptrs, usePivot, body) {
+-    if(ptrs.length === 1) {
+-      code.push("ptr0="+toPointer(ptrs[0]))
+-    } else {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
+-      }
+-    }
+-    if(usePivot) {
+-      code.push("pivot_ptr=0")
+-    }
+-    code.push("ptr_shift=offset")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    if(ptrs.length > 1) {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
+-      }
+-    }
+-    code.push(body)
+-    if(usePivot) {
+-      code.push("++pivot_ptr")
+-    }
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      if(ptrs.length>1) {
+-        code.push("ptr_shift+=d"+j)
+-      } else {
+-        code.push("ptr0+=d"+j)
+-      }
+-      code.push("}")
+-    }
++  return out
++}
++
++function projectVertex(v, model, view, projection, resolution) {
++  var p = xformMatrix(projection,
++            xformMatrix(view,
++              xformMatrix(model, [v[0], v[1], v[2], 1])))
++  for(var i=0; i<3; ++i) {
++    p[i] /= p[3]
+   }
+-  
+-  function lexicoLoop(label, ptrs, usePivot, body) {
+-    if(ptrs.length === 1) {
+-      code.push("ptr0="+toPointer(ptrs[0]))
+-    } else {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
+-      }
+-      code.push("ptr_shift=offset")
+-    }
+-    if(usePivot) {
+-      code.push("pivot_ptr=0")
+-    }
+-    if(label) {
+-      code.push(label+":")
+-    }
+-    for(var i=1; i<order.length; ++i) {
+-      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
+-    }
+-    if(ptrs.length > 1) {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
+-      }
++  return [ 0.5 * resolution[0] * (1.0+p[0]), 0.5 * resolution[1] * (1.0-p[1]) ]
++}
++
++function barycentricCoord(simplex, point) {
++  if(simplex.length === 2) {
++    var d0 = 0.0
++    var d1 = 0.0
++    for(var i=0; i<2; ++i) {
++      d0 += Math.pow(point[i] - simplex[0][i], 2)
++      d1 += Math.pow(point[i] - simplex[1][i], 2)
+     }
+-    code.push(body)
+-    for(var i=order.length-1; i>=1; --i) {
+-      if(usePivot) {
+-        code.push("pivot_ptr+=f"+i)
+-      }
+-      if(ptrs.length > 1) {
+-        code.push("ptr_shift+=e"+i)
+-      } else {
+-        code.push("ptr0+=e"+i)
+-      }
+-      code.push("}")
++    d0 = Math.sqrt(d0)
++    d1 = Math.sqrt(d1)
++    if(d0+d1 < 1e-6) {
++      return [1,0]
+     }
++    return [d1/(d0+d1),d0/(d1+d0)]
++  } else if(simplex.length === 3) {
++    var closestPoint = [0,0]
++    closestPointToTriangle(simplex[0], simplex[1], simplex[2], point, closestPoint)
++    return barycentric(simplex, closestPoint)
+   }
+-  
+-  function cleanUp() {
+-    if(order.length > 1 && allocator) {
+-      code.push("free(pivot1)", "free(pivot2)")
++  return []
++}
++
++function interpolate(simplex, weights) {
++  var result = [0,0,0]
++  for(var i=0; i<simplex.length; ++i) {
++    var p = simplex[i]
++    var w = weights[i]
++    for(var j=0; j<3; ++j) {
++      result[j] += w * p[j]
+     }
+   }
+-  
+-  function compareSwap(a_id, b_id) {
+-    var a = "el"+a_id
+-    var b = "el"+b_id
+-    if(order.length > 1) {
+-      var lbl = "__l" + (++labelCounter)
+-      lexicoLoop(lbl, [a, b], false, [
+-        "comp=",dataRead("ptr0"),"-",dataRead("ptr1"),"\n",
+-        "if(comp>0){tmp0=", a, ";",a,"=",b,";", b,"=tmp0;break ", lbl,"}\n",
+-        "if(comp<0){break ", lbl, "}"
+-      ].join(""))
+-    } else {
+-      code.push(["if(", dataRead(toPointer(a)), ">", dataRead(toPointer(b)), "){tmp0=", a, ";",a,"=",b,";", b,"=tmp0}"].join(""))
+-    }
++  return result
++}
++
++function closestPointToPickLocation(simplex, pixelCoord, model, view, projection, resolution) {
++  if(simplex.length === 1) {
++    return [0, simplex[0].slice()]
+   }
+-  
+-  compareSwap(1, 2)
+-  compareSwap(4, 5)
+-  compareSwap(1, 3)
+-  compareSwap(2, 3)
+-  compareSwap(1, 4)
+-  compareSwap(3, 4)
+-  compareSwap(2, 5)
+-  compareSwap(2, 3)
+-  compareSwap(4, 5)
+-  
+-  if(order.length > 1) {
+-    cacheLoop(["el1", "el2", "el3", "el4", "el5", "index1", "index3", "index5"], true, [
+-      "pivot1[pivot_ptr]=",dataRead("ptr1"),"\n",
+-      "pivot2[pivot_ptr]=",dataRead("ptr3"),"\n",
+-      "pivots_are_equal=pivots_are_equal&&(pivot1[pivot_ptr]===pivot2[pivot_ptr])\n",
+-      "x=",dataRead("ptr0"),"\n",
+-      "y=",dataRead("ptr2"),"\n",
+-      "z=",dataRead("ptr4"),"\n",
+-      dataWrite("ptr5", "x"),"\n",
+-      dataWrite("ptr6", "y"),"\n",
+-      dataWrite("ptr7", "z")
+-    ].join(""))
+-  } else {
+-    code.push([
+-      "pivot1=", dataRead(toPointer("el2")), "\n",
+-      "pivot2=", dataRead(toPointer("el4")), "\n",
+-      "pivots_are_equal=pivot1===pivot2\n",
+-      "x=", dataRead(toPointer("el1")), "\n",
+-      "y=", dataRead(toPointer("el3")), "\n",
+-      "z=", dataRead(toPointer("el5")), "\n",
+-      dataWrite(toPointer("index1"), "x"), "\n",
+-      dataWrite(toPointer("index3"), "y"), "\n",
+-      dataWrite(toPointer("index5"), "z")
+-    ].join(""))
++  var simplex2D = new Array(simplex.length)
++  for(var i=0; i<simplex.length; ++i) {
++    simplex2D[i] = projectVertex(simplex[i], model, view, projection, resolution);
+   }
+-  
+ 
+-  function moveElement(dst, src) {
+-    if(order.length > 1) {
+-      cacheLoop([dst, src], false,
+-        dataWrite("ptr0", dataRead("ptr1"))
+-      )
+-    } else {
+-      code.push(dataWrite(toPointer(dst), dataRead(toPointer(src))))
+-    }
+-  }
+-  
+-  moveElement("index2", "left")
+-  moveElement("index4", "right")
+-  
+-  function comparePivot(result, ptr, n) {
+-    if(order.length > 1) {
+-      var lbl = "__l" + (++labelCounter)
+-      lexicoLoop(lbl, [ptr], true, [
+-        result,"=",dataRead("ptr0"),"-pivot",n,"[pivot_ptr]\n",
+-        "if(",result,"!==0){break ", lbl, "}"
+-      ].join(""))
+-    } else {
+-      code.push([result,"=", dataRead(toPointer(ptr)), "-pivot", n].join(""))
++  var closestIndex = 0
++  var closestDist  = Infinity
++  for(var i=0; i<simplex2D.length; ++i) {
++    var d2 = 0.0
++    for(var j=0; j<2; ++j) {
++      d2 += Math.pow(simplex2D[i][j] - pixelCoord[j], 2)
+     }
+-  }
+-  
+-  function swapElements(a, b) {
+-    if(order.length > 1) {
+-      cacheLoop([a,b],false,[
+-        "tmp=",dataRead("ptr0"),"\n",
+-        dataWrite("ptr0", dataRead("ptr1")),"\n",
+-        dataWrite("ptr1", "tmp")
+-      ].join(""))
+-    } else {
+-      code.push([
+-        "ptr0=",toPointer(a),"\n",
+-        "ptr1=",toPointer(b),"\n",
+-        "tmp=",dataRead("ptr0"),"\n",
+-        dataWrite("ptr0", dataRead("ptr1")),"\n",
+-        dataWrite("ptr1", "tmp")
+-      ].join(""))
++    if(d2 < closestDist) {
++      closestDist  = d2
++      closestIndex = i
+     }
+   }
+-  
+-  function tripleSwap(k, less, great) {
+-    if(order.length > 1) {
+-      cacheLoop([k,less,great], false, [
+-        "tmp=",dataRead("ptr0"),"\n",
+-        dataWrite("ptr0", dataRead("ptr1")),"\n",
+-        dataWrite("ptr1", dataRead("ptr2")),"\n",
+-        dataWrite("ptr2", "tmp")
+-      ].join(""))
+-      code.push("++"+less, "--"+great)
+-    } else {
+-      code.push([
+-        "ptr0=",toPointer(k),"\n",
+-        "ptr1=",toPointer(less),"\n",
+-        "ptr2=",toPointer(great),"\n",
+-        "++",less,"\n",
+-        "--",great,"\n",
+-        "tmp=", dataRead("ptr0"), "\n",
+-        dataWrite("ptr0", dataRead("ptr1")), "\n",
+-        dataWrite("ptr1", dataRead("ptr2")), "\n",
+-        dataWrite("ptr2", "tmp")
+-      ].join(""))
++
++  var weights = barycentricCoord(simplex2D, pixelCoord)
++  var s = 0.0
++  for(var i=0; i<3; ++i) {
++    if(weights[i] < -0.001 ||
++       weights[i] > 1.0001) {
++      return null
+     }
++    s += weights[i]
+   }
+-  
+-  function swapAndDecrement(k, great) {
+-    swapElements(k, great)
+-    code.push("--"+great)
++  if(Math.abs(s - 1.0) > 0.001) {
++    return null
+   }
+-    
+-  code.push("if(pivots_are_equal){")
+-    //Pivots are equal case
+-    code.push("for(k=less;k<=great;++k){")
+-      comparePivot("comp", "k", 1)
+-      code.push("if(comp===0){continue}")
+-      code.push("if(comp<0){")
+-        code.push("if(k!==less){")
+-          swapElements("k", "less")
+-        code.push("}")
+-        code.push("++less")
+-      code.push("}else{")
+-        code.push("while(true){")
+-          comparePivot("comp", "great", 1)
+-          code.push("if(comp>0){")
+-            code.push("great--")
+-          code.push("}else if(comp<0){")
+-            tripleSwap("k", "less", "great")
+-            code.push("break")
+-          code.push("}else{")
+-            swapAndDecrement("k", "great")
+-            code.push("break")
+-          code.push("}")
+-        code.push("}")
+-      code.push("}")
+-    code.push("}")
+-  code.push("}else{")
+-    //Pivots not equal case
+-    code.push("for(k=less;k<=great;++k){")
+-      comparePivot("comp_pivot1", "k", 1)
+-      code.push("if(comp_pivot1<0){")
+-        code.push("if(k!==less){")
+-          swapElements("k", "less")
+-        code.push("}")
+-        code.push("++less")
+-      code.push("}else{")
+-        comparePivot("comp_pivot2", "k", 2)
+-        code.push("if(comp_pivot2>0){")
+-          code.push("while(true){")
+-            comparePivot("comp", "great", 2)
+-            code.push("if(comp>0){")
+-              code.push("if(--great<k){break}")
+-              code.push("continue")
+-            code.push("}else{")
+-              comparePivot("comp", "great", 1)
+-              code.push("if(comp<0){")
+-                tripleSwap("k", "less", "great")
+-              code.push("}else{")
+-                swapAndDecrement("k", "great")
+-              code.push("}")
+-              code.push("break")
+-            code.push("}")
+-          code.push("}")
+-        code.push("}")
+-      code.push("}")
+-    code.push("}")
+-  code.push("}")
+-  
+-  //Move pivots to correct place
+-  function storePivot(mem_dest, pivot_dest, pivot) {
+-    if(order.length>1) {
+-      cacheLoop([mem_dest, pivot_dest], true, [
+-        dataWrite("ptr0", dataRead("ptr1")), "\n",
+-        dataWrite("ptr1", ["pivot",pivot,"[pivot_ptr]"].join(""))
+-      ].join(""))
+-    } else {
+-      code.push(
+-          dataWrite(toPointer(mem_dest), dataRead(toPointer(pivot_dest))),
+-          dataWrite(toPointer(pivot_dest), "pivot"+pivot))
++  return [closestIndex, interpolate(simplex, weights), weights]
++}
++},{"barycentric":17,"polytope-closest-point/lib/closest_point_2d.js":204}],124:[function(require,module,exports){
++
++
++var triVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, normal;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model\n           , view\n           , projection;\nuniform vec3 eyePosition\n           , lightPosition;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec4 m_position  = model * vec4(position, 1.0);\n  vec4 t_position  = view * m_position;\n  gl_Position      = projection * t_position;\n  f_color          = color;\n  f_normal         = normal;\n  f_data           = position;\n  f_eyeDirection   = eyePosition   - position;\n  f_lightDirection = lightPosition - position;\n  f_uv             = uv;\n}"
++var triFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat cookTorranceSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness,\n  float fresnel) {\n\n  float VdotN = max(dot(viewDirection, surfaceNormal), 0.0);\n  float LdotN = max(dot(lightDirection, surfaceNormal), 0.0);\n\n  //Half angle vector\n  vec3 H = normalize(lightDirection + viewDirection);\n\n  //Geometric term\n  float NdotH = max(dot(surfaceNormal, H), 0.0);\n  float VdotH = max(dot(viewDirection, H), 0.000001);\n  float LdotH = max(dot(lightDirection, H), 0.000001);\n  float G1 = (2.0 * NdotH * VdotN) / VdotH;\n  float G2 = (2.0 * NdotH * LdotN) / LdotH;\n  float G = min(1.0, min(G1, G2));\n  \n  //Distribution term\n  float D = beckmannDistribution_2_0(NdotH, roughness);\n\n  //Fresnel term\n  float F = pow(1.0 - VdotN, fresnel);\n\n  //Multiply terms and done\n  return  G * F * D / max(3.14159265 * VdotN, 0.000001);\n}\n\n\n\nuniform vec3 clipBounds[2];\nuniform float roughness\n            , fresnel\n            , kambient\n            , kdiffuse\n            , kspecular\n            , opacity;\nuniform sampler2D texture;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(f_normal);\n  vec3 L = normalize(f_lightDirection);\n  vec3 V = normalize(f_eyeDirection);\n  \n  if(!gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = cookTorranceSpecular_1_1(L, V, N, roughness, fresnel);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = f_color * texture2D(texture, f_uv);\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = litColor * opacity;\n}"
++var edgeVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model, view, projection;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_color = color;\n  f_data  = position;\n  f_uv    = uv;\n}"
++var edgeFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 clipBounds[2];\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
++var pointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\nattribute float pointSize;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position = projection * view * model * vec4(position, 1.0);\n  }\n  gl_PointSize = pointSize;\n  f_color = color;\n  f_uv = uv;\n}"
++var pointFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec2 pointR = gl_PointCoord.xy - vec2(0.5,0.5);\n  if(dot(pointR, pointR) > 0.25) {\n    discard;\n  }\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
++var pickVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_id        = id;\n  f_position  = position;\n}"
++var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3  clipBounds[2];\nuniform float pickId;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(f_position, clipBounds[0])) || \n     any(greaterThan(f_position, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId, f_id.xyz);\n}"
++var pickPointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3  position;\nattribute float pointSize;\nattribute vec4  id;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position  = projection * view * model * vec4(position, 1.0);\n    gl_PointSize = pointSize;\n  }\n  f_id         = id;\n  f_position   = position;\n}"
++var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n}"
++var contourFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 contourColor;\n\nvoid main() {\n  gl_FragColor = vec4(contourColor,1);\n}\n"
++
++exports.meshShader = {
++  vertex:   triVertSrc,
++  fragment: triFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'normal', type: 'vec3'},
++    {name: 'color', type: 'vec4'},
++    {name: 'uv', type: 'vec2'}
++  ]
++}
++exports.wireShader = {
++  vertex:   edgeVertSrc,
++  fragment: edgeFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'color', type: 'vec4'},
++    {name: 'uv', type: 'vec2'}
++  ]
++}
++exports.pointShader = {
++  vertex:   pointVertSrc,
++  fragment: pointFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'color', type: 'vec4'},
++    {name: 'uv', type: 'vec2'},
++    {name: 'pointSize', type: 'float'}
++  ]
++}
++exports.pickShader = {
++  vertex:   pickVertSrc,
++  fragment: pickFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'id', type: 'vec4'}
++  ]
++}
++exports.pointPickShader = {
++  vertex:   pickPointVertSrc,
++  fragment: pickFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'pointSize', type: 'float'},
++    {name: 'id', type: 'vec4'}
++  ]
++}
++exports.contourShader = {
++  vertex:   contourVertSrc,
++  fragment: contourFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'}
++  ]
++}
++
++},{}],125:[function(require,module,exports){
++'use strict'
++
++var DEFAULT_VERTEX_NORMALS_EPSILON = 1e-6; // may be too large if triangles are very small
++var DEFAULT_FACE_NORMALS_EPSILON = 1e-6;
++
++var createShader  = require('gl-shader')
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var createTexture = require('gl-texture2d')
++var normals       = require('normals')
++var multiply      = require('gl-mat4/multiply')
++var invert        = require('gl-mat4/invert')
++var ndarray       = require('ndarray')
++var colormap      = require('colormap')
++var getContour    = require('simplicial-complex-contour')
++var pool          = require('typedarray-pool')
++var shaders       = require('./lib/shaders')
++var closestPoint  = require('./lib/closest-point')
++
++var meshShader    = shaders.meshShader
++var wireShader    = shaders.wireShader
++var pointShader   = shaders.pointShader
++var pickShader    = shaders.pickShader
++var pointPickShader = shaders.pointPickShader
++var contourShader = shaders.contourShader
++
++var identityMatrix = [
++  1,0,0,0,
++  0,1,0,0,
++  0,0,1,0,
++  0,0,0,1]
++
++function SimplicialMesh(gl
++  , texture
++  , triShader
++  , lineShader
++  , pointShader
++  , pickShader
++  , pointPickShader
++  , contourShader
++  , trianglePositions
++  , triangleIds
++  , triangleColors
++  , triangleUVs
++  , triangleNormals
++  , triangleVAO
++  , edgePositions
++  , edgeIds
++  , edgeColors
++  , edgeUVs
++  , edgeVAO
++  , pointPositions
++  , pointIds
++  , pointColors
++  , pointUVs
++  , pointSizes
++  , pointVAO
++  , contourPositions
++  , contourVAO) {
++
++  this.gl                = gl
++  this.cells             = []
++  this.positions         = []
++  this.intensity         = []
++  this.texture           = texture
++  this.dirty             = true
++
++  this.triShader         = triShader
++  this.lineShader        = lineShader
++  this.pointShader       = pointShader
++  this.pickShader        = pickShader
++  this.pointPickShader   = pointPickShader
++  this.contourShader     = contourShader
++
++  this.trianglePositions = trianglePositions
++  this.triangleColors    = triangleColors
++  this.triangleNormals   = triangleNormals
++  this.triangleUVs       = triangleUVs
++  this.triangleIds       = triangleIds
++  this.triangleVAO       = triangleVAO
++  this.triangleCount     = 0
++
++  this.lineWidth         = 1
++  this.edgePositions     = edgePositions
++  this.edgeColors        = edgeColors
++  this.edgeUVs           = edgeUVs
++  this.edgeIds           = edgeIds
++  this.edgeVAO           = edgeVAO
++  this.edgeCount         = 0
++
++  this.pointPositions    = pointPositions
++  this.pointColors       = pointColors
++  this.pointUVs          = pointUVs
++  this.pointSizes        = pointSizes
++  this.pointIds          = pointIds
++  this.pointVAO          = pointVAO
++  this.pointCount        = 0
++
++  this.contourLineWidth  = 1
++  this.contourPositions  = contourPositions
++  this.contourVAO        = contourVAO
++  this.contourCount      = 0
++  this.contourColor      = [0,0,0]
++  this.contourEnable     = true
++
++  this.pickId            = 1
++  this.bounds            = [
++    [ Infinity, Infinity, Infinity],
++    [-Infinity,-Infinity,-Infinity] ]
++  this.clipBounds        = [
++    [-Infinity,-Infinity,-Infinity],
++    [ Infinity, Infinity, Infinity] ]
++
++  this.lightPosition = [1e5, 1e5, 0]
++  this.ambientLight  = 0.8
++  this.diffuseLight  = 0.8
++  this.specularLight = 2.0
++  this.roughness     = 0.5
++  this.fresnel       = 1.5
++
++  this.opacity       = 1.0
++
++  this._model       = identityMatrix
++  this._view        = identityMatrix
++  this._projection  = identityMatrix
++  this._resolution  = [1,1]
++}
++
++var proto = SimplicialMesh.prototype
++
++proto.isOpaque = function() {
++  return this.opacity >= 1
++}
++
++proto.isTransparent = function() {
++  return this.opacity < 1
++}
++
++proto.pickSlots = 1
++
++proto.setPickBase = function(id) {
++  this.pickId = id
++}
++
++function genColormap(param) {
++  var colors = colormap({
++      colormap: param
++    , nshades:  256
++    , format:  'rgba'
++  })
++
++  var result = new Uint8Array(256*4)
++  for(var i=0; i<256; ++i) {
++    var c = colors[i]
++    for(var j=0; j<3; ++j) {
++      result[4*i+j] = c[j]
+     }
++    result[4*i+3] = c[3]*255
+   }
+-  
+-  storePivot("left", "(less-1)", 1)
+-  storePivot("right", "(great+1)", 2)
+ 
+-  //Recursive sort call
+-  function doSort(left, right) {
+-    code.push([
+-      "if((",right,"-",left,")<=",INSERTION_SORT_THRESHOLD,"){\n",
+-        "insertionSort(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
+-      "}else{\n",
+-        funcName, "(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
+-      "}"
+-    ].join(""))
++  return ndarray(result, [256,256,4], [4,0,1])
++}
++
++function unpackIntensity(cells, numVerts, cellIntensity) {
++  var result = new Array(numVerts)
++  for(var i=0; i<numVerts; ++i) {
++    result[i] = 0
+   }
+-  doSort("left", "(less-2)")
+-  doSort("(great+2)", "right")
+-  
+-  //If pivots are equal, then early out
+-  code.push("if(pivots_are_equal){")
+-    cleanUp()
+-    code.push("return")
+-  code.push("}")
+-  
+-  function walkPointer(ptr, pivot, body) {
+-    if(order.length > 1) {
+-      code.push(["__l",++labelCounter,":while(true){"].join(""))
+-      cacheLoop([ptr], true, [
+-        "if(", dataRead("ptr0"), "!==pivot", pivot, "[pivot_ptr]){break __l", labelCounter, "}"
+-      ].join(""))
+-      code.push(body, "}")
+-    } else {
+-      code.push(["while(", dataRead(toPointer(ptr)), "===pivot", pivot, "){", body, "}"].join(""))
++  var numCells = cells.length
++  for(var i=0; i<numCells; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      result[c[j]] = cellIntensity[i]
+     }
+   }
+-  
+-  //Check bounds
+-  code.push("if(less<index1&&great>index5){")
+-  
+-    walkPointer("less", 1, "++less")
+-    walkPointer("great", 2, "--great")
+-  
+-    code.push("for(k=less;k<=great;++k){")
+-      comparePivot("comp_pivot1", "k", 1)
+-      code.push("if(comp_pivot1===0){")
+-        code.push("if(k!==less){")
+-          swapElements("k", "less")
+-        code.push("}")
+-        code.push("++less")
+-      code.push("}else{")
+-        comparePivot("comp_pivot2", "k", 2)
+-        code.push("if(comp_pivot2===0){")
+-          code.push("while(true){")
+-            comparePivot("comp", "great", 2)
+-            code.push("if(comp===0){")
+-              code.push("if(--great<k){break}")
+-              code.push("continue")
+-            code.push("}else{")
+-              comparePivot("comp", "great", 1)
+-              code.push("if(comp<0){")
+-                tripleSwap("k", "less", "great")
+-              code.push("}else{")
+-                swapAndDecrement("k", "great")
+-              code.push("}")
+-              code.push("break")
+-            code.push("}")
+-          code.push("}")
+-        code.push("}")
+-      code.push("}")
+-    code.push("}")
+-  code.push("}")
+-  
+-  //Clean up and do a final sorting pass
+-  cleanUp()
+-  doSort("less", "great")
+- 
+-  //Close off main loop
+-  code.push("}return " + funcName)
+-  
+-  //Compile and link
+-  if(order.length > 1 && allocator) {
+-    var compiled = new Function("insertionSort", "malloc", "free", code.join("\n"))
+-    return compiled(insertionSort, allocator[0], allocator[1])
+-  }
+-  var compiled = new Function("insertionSort", code.join("\n"))
+-  return compiled(insertionSort)
++  return result
+ }
+ 
+-function compileSort(order, dtype) {
+-  var code = ["'use strict'"]
+-  var funcName = ["ndarraySortWrapper", order.join("d"), dtype].join("")
+-  var funcArgs = [ "array" ]
+-  
+-  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
+-  
+-  //Unpack local variables from array
+-  var vars = ["data=array.data,offset=array.offset|0,shape=array.shape,stride=array.stride"]
+-  for(var i=0; i<order.length; ++i) {
+-    vars.push(["s",i,"=stride[",i,"]|0,n",i,"=shape[",i,"]|0"].join(""))
++function takeZComponent(array) {
++  var n = array.length
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = array[i][2]
+   }
+-  
+-  var scratch_stride = new Array(order.length)
+-  var nprod = []
+-  for(var i=0; i<order.length; ++i) {
+-    var k = order[i]
+-    if(k === 0) {
+-      continue
+-    }
+-    if(nprod.length === 0) {
+-      scratch_stride[k] = "1"
+-    } else {
+-      scratch_stride[k] = nprod.join("*")
+-    }
+-    nprod.push("n"+k)
++  return result
++}
++
++proto.highlight = function(selection) {
++  if(!selection || !this.contourEnable) {
++    this.contourCount = 0
++    return
+   }
+-  
+-  var p = -1, q = -1
+-  for(var i=0; i<order.length; ++i) {
+-    var j = order[i]
+-    if(j !== 0) {
+-      if(p > 0) {
+-        vars.push(["d",j,"=s",j,"-d",p,"*n",p].join(""))
+-      } else {
+-        vars.push(["d",j,"=s",j].join(""))
++  var level = getContour(this.cells, this.intensity, selection.intensity)
++  var cells         = level.cells
++  var vertexIds     = level.vertexIds
++  var vertexWeights = level.vertexWeights
++  var numCells = cells.length
++  var result = pool.mallocFloat32(2 * 3 * numCells)
++  var ptr = 0
++  for(var i=0; i<numCells; ++i) {
++    var c = cells[i]
++    for(var j=0; j<2; ++j) {
++      var v = c[0]
++      if(c.length === 2) {
++        v = c[j]
+       }
+-      p = j
+-    }
+-    var k = order.length-1-i
+-    if(k !== 0) {
+-      if(q > 0) {
+-        vars.push(["e",k,"=s",k,"-e",q,"*n",q,
+-                  ",f",k,"=",scratch_stride[k],"-f",q,"*n",q].join(""))
+-      } else {
+-        vars.push(["e",k,"=s",k,",f",k,"=",scratch_stride[k]].join(""))
++      var a = vertexIds[v][0]
++      var b = vertexIds[v][1]
++      var w = vertexWeights[v]
++      var wi = 1.0 - w
++      var pa = this.positions[a]
++      var pb = this.positions[b]
++      for(var k=0; k<3; ++k) {
++        result[ptr++] = w * pa[k] + wi * pb[k]
+       }
+-      q = k
+     }
+   }
+-  
+-  //Declare local variables
+-  code.push("var " + vars.join(","))
+-  
+-  //Create arguments for subroutine
+-  var sortArgs = ["0", "n0-1", "data", "offset"].concat(shapeArgs(order.length))
+-  
+-  //Call main sorting routine
+-  code.push([
+-    "if(n0<=",INSERTION_SORT_THRESHOLD,"){",
+-      "insertionSort(", sortArgs.join(","), ")}else{",
+-      "quickSort(", sortArgs.join(","),
+-    ")}"
+-  ].join(""))
+-  
+-  //Return
+-  code.push("}return " + funcName)
+-  
+-  //Link everything together
+-  var result = new Function("insertionSort", "quickSort", code.join("\n"))
+-  var insertionSort = createInsertionSort(order, dtype)
+-  var quickSort = createQuickSort(order, dtype, insertionSort)
+-  return result(insertionSort, quickSort)
++  this.contourCount = (ptr / 3)|0
++  this.contourPositions.update(result.subarray(0, ptr))
++  pool.free(result)
+ }
+ 
+-module.exports = compileSort
+-},{"typedarray-pool":242}],141:[function(require,module,exports){
+-"use strict"
++proto.update = function(params) {
++  params = params || {}
++  var gl = this.gl
+ 
+-var compile = require("./lib/compile_sort.js")
+-var CACHE = {}
++  this.dirty = true
+ 
+-function sort(array) {
+-  var order = array.order
+-  var dtype = array.dtype
+-  var typeSig = [order, dtype ]
+-  var typeName = typeSig.join(":")
+-  var compiled = CACHE[typeName]
+-  if(!compiled) {
+-    CACHE[typeName] = compiled = compile(order, dtype)
++  if('contourEnable' in params) {
++    this.contourEnable = params.contourEnable
+   }
+-  compiled(array)
+-  return array
+-}
+-
+-module.exports = sort
+-},{"./lib/compile_sort.js":140}],142:[function(require,module,exports){
+-
+-var createShader = require('gl-shader')
+-
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\nattribute vec2 position;\nvarying vec2 uv;\nvoid main() {\n  uv = position;\n  gl_Position = vec4(position, 0, 1);\n}"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D accumBuffer;\nvarying vec2 uv;\n\nvoid main() {\n  vec4 accum = texture2D(accumBuffer, 0.5 * (uv + 1.0));\n  gl_FragColor = min(vec4(1,1,1,1), accum);\n}"
+-
+-module.exports = function(gl) {
+-  return createShader(gl, vertSrc, fragSrc, null, [ { name: 'position', type: 'vec2'}])
+-}
+-
+-},{"gl-shader":164}],143:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = createCamera
+-
+-var now         = require('right-now')
+-var createView  = require('3d-view')
+-var mouseChange = require('mouse-change')
+-var mouseWheel  = require('mouse-wheel')
+-
+-function createCamera(element, options) {
+-  element = element || document.body
+-  options = options || {}
+-
+-  var limits  = [ 0.01, Infinity ]
+-  if('distanceLimits' in options) {
+-    limits[0] = options.distanceLimits[0]
+-    limits[1] = options.distanceLimits[1]
++  if('contourColor' in params) {
++    this.contourColor = params.contourColor
+   }
+-  if('zoomMin' in options) {
+-    limits[0] = options.zoomMin
++  if('lineWidth' in params) {
++    this.lineWidth = params.lineWidth
+   }
+-  if('zoomMax' in options) {
+-    limits[1] = options.zoomMax
++  if('lightPosition' in params) {
++    this.lightPosition = params.lightPosition
++  }
++  if('opacity' in params) {
++    this.opacity = params.opacity
++  }
++  if('ambient' in params) {
++    this.ambientLight  = params.ambient
++  }
++  if('diffuse' in params) {
++    this.diffuseLight = params.diffuse
++  }
++  if('specular' in params) {
++    this.specularLight = params.specular
++  }
++  if('roughness' in params) {
++    this.roughness = params.roughness
++  }
++  if('fresnel' in params) {
++    this.fresnel = params.fresnel
+   }
+ 
+-  var view = createView({
+-    center: options.center || [0,0,0],
+-    up:     options.up     || [0,1,0],
+-    eye:    options.eye    || [0,0,10],
+-    mode:   options.mode   || 'orbit',
+-    distanceLimits: limits
+-  })
++  if(params.texture) {
++    this.texture.dispose()
++    this.texture = createTexture(gl, params.texture)
++  } else if (params.colormap) {
++    this.texture.shape = [256,256]
++    this.texture.minFilter = gl.LINEAR_MIPMAP_LINEAR
++    this.texture.magFilter = gl.LINEAR
++    this.texture.setPixels(genColormap(params.colormap))
++    this.texture.generateMipmap()
++  }
+ 
+-  var pmatrix = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+-  var distance = 0.0
+-  var width   = element.clientWidth
+-  var height  = element.clientHeight
++  var cells = params.cells
++  var positions = params.positions
+ 
+-  var camera = {
+-    view:               view,
+-    element:            element,
+-    delay:              options.delay          || 16,
+-    rotateSpeed:        options.rotateSpeed    || 1,
+-    zoomSpeed:          options.zoomSpeed      || 1,
+-    translateSpeed:     options.translateSpeed || 1,
+-    flipX:              !!options.flipX,
+-    flipY:              !!options.flipY,
+-    modes:              view.modes,
+-    tick: function() {
+-      var t = now()
+-      var delay = this.delay
+-      view.idle(t-delay)
+-      view.flush(t-(100+delay*2))
+-      var ctime = t - 2 * delay
+-      view.recalcMatrix(ctime)
+-      var allEqual = true
+-      var matrix = view.computedMatrix
+-      for(var i=0; i<16; ++i) {
+-        allEqual = allEqual && (pmatrix[i] === matrix[i])
+-        pmatrix[i] = matrix[i]
+-      }
+-      var sizeChanged = 
+-          element.clientWidth === width && 
+-          element.clientHeight === height
+-      width  = element.clientWidth
+-      height = element.clientHeight
+-      if(allEqual) {
+-        return !sizeChanged
+-      }
+-      distance = Math.exp(view.computedRadius[0])
+-      return true
+-    },
+-    lookAt: function(center, eye, up) {
+-      view.lookAt(view.lastT(), center, eye, up)
+-    },
+-    rotate: function(pitch, yaw, roll) {
+-      view.rotate(view.lastT(), pitch, yaw, roll)
+-    },
+-    pan: function(dx, dy, dz) {
+-      view.pan(view.lastT(), dx, dy, dz)
+-    },
+-    translate: function(dx, dy, dz) {
+-      view.translate(view.lastT(), dx, dy, dz)
+-    }
++  if(!positions || !cells) {
++    return
+   }
+ 
+-  Object.defineProperties(camera, {
+-    matrix: {
+-      get: function() {
+-        return view.computedMatrix
+-      },
+-      set: function(mat) {
+-        view.setMatrix(view.lastT(), mat)
+-        return view.computedMatrix
+-      },
+-      enumerable: true
+-    },
+-    mode: {
+-      get: function() {
+-        return view.getMode()
+-      },
+-      set: function(mode) {
+-        view.setMode(mode)
+-        return view.getMode()
+-      },
+-      enumerable: true
+-    },
+-    center: {
+-      get: function() {
+-        return view.computedCenter
+-      },
+-      set: function(ncenter) {
+-        view.lookAt(view.lastT(), ncenter)
+-        return view.computedCenter
+-      },
+-      enumerable: true
+-    },
+-    eye: {
+-      get: function() {
+-        return view.computedEye
+-      },
+-      set: function(neye) {
+-        view.lookAt(view.lastT(), null, neye)
+-        return view.computedEye
+-      },
+-      enumerable: true
+-    },
+-    up: {
+-      get: function() {
+-        return view.computedUp
+-      },
+-      set: function(nup) {
+-        view.lookAt(view.lastT(), null, null, nup)
+-        return view.computedUp
+-      },
+-      enumerable: true
+-    },
+-    distance: {
+-      get: function() {
+-        return distance
+-      },
+-      set: function(d) {
+-        view.setDistance(view.lastT(), d)
+-        return d
+-      },
+-      enumerable: true
+-    },
+-    distanceLimits: {
+-      get: function() {
+-        return view.getDistanceLimits(limits)
+-      },
+-      set: function(v) {
+-        view.setDistanceLimits(v)
+-        return v
+-      },
+-      enumerable: true
+-    }
+-  })
+-  
+-  element.addEventListener('contextmenu', function(ev) {
+-    ev.preventDefault()
+-    return false
+-  })
++  var tPos = []
++  var tCol = []
++  var tNor = []
++  var tUVs = []
++  var tIds = []
+ 
+-  var lastX = 0, lastY = 0
+-  mouseChange(element, function(buttons, x, y, mods) {
+-    var scale = 1.0 / element.clientHeight
+-    var dx    = scale * (x - lastX)
+-    var dy    = scale * (y - lastY)
++  var ePos = []
++  var eCol = []
++  var eUVs = []
++  var eIds = []
++
++  var pPos = []
++  var pCol = []
++  var pUVs = []
++  var pSiz = []
++  var pIds = []
++
++  //Save geometry data for picking calculations
++  this.cells     = cells
++  this.positions = positions
+ 
+-    var flipX = camera.flipX ? 1 : -1
+-    var flipY = camera.flipY ? 1 : -1
++  //Compute normals
++  var vertexNormals = params.vertexNormals
++  var cellNormals   = params.cellNormals
++  var vertexNormalsEpsilon = params.vertexNormalsEpsilon === void(0) ? DEFAULT_VERTEX_NORMALS_EPSILON : params.vertexNormalsEpsilon
++  var faceNormalsEpsilon = params.faceNormalsEpsilon === void(0) ? DEFAULT_FACE_NORMALS_EPSILON : params.faceNormalsEpsilon
++  if(params.useFacetNormals && !cellNormals) {
++    cellNormals = normals.faceNormals(cells, positions, faceNormalsEpsilon)
++  }
++  if(!cellNormals && !vertexNormals) {
++    vertexNormals = normals.vertexNormals(cells, positions, vertexNormalsEpsilon)
++  }
+ 
+-    var drot  = Math.PI * camera.rotateSpeed
++  //Compute colors
++  var vertexColors    = params.vertexColors
++  var cellColors      = params.cellColors
++  var meshColor       = params.meshColor || [1,1,1,1]
+ 
+-    var t = now()
++  //UVs
++  var vertexUVs       = params.vertexUVs
++  var vertexIntensity = params.vertexIntensity
++  var cellUVs         = params.cellUVs
++  var cellIntensity   = params.cellIntensity
+ 
+-    if(buttons & 1) {
+-      if(mods.shift) {
+-        view.rotate(t, 0, 0, -dx * drot)
+-      } else {
+-        view.rotate(t, flipX * drot * dx, -flipY * drot * dy, 0)
++  var intensityLo     = Infinity
++  var intensityHi     = -Infinity
++  if(!vertexUVs && !cellUVs) {
++    if(vertexIntensity) {
++      for(var i=0; i<vertexIntensity.length; ++i) {
++        var f = vertexIntensity[i]
++        intensityLo = Math.min(intensityLo, f)
++        intensityHi = Math.max(intensityHi, f)
++      }
++    } else if(cellIntensity) {
++      for(var i=0; i<cellIntensity.length; ++i) {
++        var f = cellIntensity[i]
++        intensityLo = Math.min(intensityLo, f)
++        intensityHi = Math.max(intensityHi, f)
++      }
++    } else {
++      for(var i=0; i<positions.length; ++i) {
++        var f = positions[i][2]
++        intensityLo = Math.min(intensityLo, f)
++        intensityHi = Math.max(intensityHi, f)
+       }
+-    } else if(buttons & 2) {
+-      view.pan(t, -camera.translateSpeed * dx * distance, camera.translateSpeed * dy * distance, 0)
+-    } else if(buttons & 4) {
+-      var kzoom = camera.zoomSpeed * dy / window.innerHeight * (t - view.lastT()) * 50.0
+-      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
+     }
++  }
+ 
+-    lastX = x
+-    lastY = y
+-  })
++  if(vertexIntensity) {
++    this.intensity = vertexIntensity
++  } else if(cellIntensity) {
++    this.intensity = unpackIntensity(cells, positions.length, cellIntensity)
++  } else {
++    this.intensity = takeZComponent(positions)
++  }
+ 
+-  mouseWheel(element, function(dx, dy, dz) {
+-    var flipX = camera.flipX ? 1 : -1
+-    var flipY = camera.flipY ? 1 : -1
+-    var t = now()
+-    if(Math.abs(dx) > Math.abs(dy)) {
+-      view.rotate(t, 0, 0, -dx * flipX * Math.PI * camera.rotateSpeed / window.innerWidth)
+-    } else {
+-      var kzoom = camera.zoomSpeed * flipY * dy / window.innerHeight * (t - view.lastT()) / 100.0
+-      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
++  //Point size
++  var pointSizes      = params.pointSizes
++  var meshPointSize   = params.pointSize || 1.0
++
++  //Update bounds
++  this.bounds       = [[Infinity,Infinity,Infinity], [-Infinity,-Infinity,-Infinity]]
++  for(var i=0; i<positions.length; ++i) {
++    var p = positions[i]
++    for(var j=0; j<3; ++j) {
++      if(isNaN(p[j]) || !isFinite(p[j])) {
++        continue
++      }
++      this.bounds[0][j] = Math.min(this.bounds[0][j], p[j])
++      this.bounds[1][j] = Math.max(this.bounds[1][j], p[j])
+     }
+-  }, true)
++  }
+ 
+-  return camera
+-}
+-},{"3d-view":27,"mouse-change":207,"mouse-wheel":211,"right-now":221}],144:[function(require,module,exports){
+-// Copyright (C) 2011 Google Inc.
+-//
+-// Licensed under the Apache License, Version 2.0 (the "License");
+-// you may not use this file except in compliance with the License.
+-// You may obtain a copy of the License at
+-//
+-// http://www.apache.org/licenses/LICENSE-2.0
+-//
+-// Unless required by applicable law or agreed to in writing, software
+-// distributed under the License is distributed on an "AS IS" BASIS,
+-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-// See the License for the specific language governing permissions and
+-// limitations under the License.
++  //Pack cells into buffers
++  var triangleCount = 0
++  var edgeCount = 0
++  var pointCount = 0
+ 
+-/**
+- * @fileoverview Install a leaky WeakMap emulation on platforms that
+- * don't provide a built-in one.
+- *
+- * <p>Assumes that an ES5 platform where, if {@code WeakMap} is
+- * already present, then it conforms to the anticipated ES6
+- * specification. To run this file on an ES5 or almost ES5
+- * implementation where the {@code WeakMap} specification does not
+- * quite conform, run <code>repairES5.js</code> first.
+- *
+- * <p>Even though WeakMapModule is not global, the linter thinks it
+- * is, which is why it is in the overrides list below.
+- *
+- * <p>NOTE: Before using this WeakMap emulation in a non-SES
+- * environment, see the note below about hiddenRecord.
+- *
+- * @author Mark S. Miller
+- * @requires crypto, ArrayBuffer, Uint8Array, navigator, console
+- * @overrides WeakMap, ses, Proxy
+- * @overrides WeakMapModule
+- */
++fill_loop:
++  for(var i=0; i<cells.length; ++i) {
++    var cell = cells[i]
++    switch(cell.length) {
++      case 1:
+ 
+-/**
+- * This {@code WeakMap} emulation is observably equivalent to the
+- * ES-Harmony WeakMap, but with leakier garbage collection properties.
+- *
+- * <p>As with true WeakMaps, in this emulation, a key does not
+- * retain maps indexed by that key and (crucially) a map does not
+- * retain the keys it indexes. A map by itself also does not retain
+- * the values associated with that map.
+- *
+- * <p>However, the values associated with a key in some map are
+- * retained so long as that key is retained and those associations are
+- * not overridden. For example, when used to support membranes, all
+- * values exported from a given membrane will live for the lifetime
+- * they would have had in the absence of an interposed membrane. Even
+- * when the membrane is revoked, all objects that would have been
+- * reachable in the absence of revocation will still be reachable, as
+- * far as the GC can tell, even though they will no longer be relevant
+- * to ongoing computation.
+- *
+- * <p>The API implemented here is approximately the API as implemented
+- * in FF6.0a1 and agreed to by MarkM, Andreas Gal, and Dave Herman,
+- * rather than the offially approved proposal page. TODO(erights):
+- * upgrade the ecmascript WeakMap proposal page to explain this API
+- * change and present to EcmaScript committee for their approval.
+- *
+- * <p>The first difference between the emulation here and that in
+- * FF6.0a1 is the presence of non enumerable {@code get___, has___,
+- * set___, and delete___} methods on WeakMap instances to represent
+- * what would be the hidden internal properties of a primitive
+- * implementation. Whereas the FF6.0a1 WeakMap.prototype methods
+- * require their {@code this} to be a genuine WeakMap instance (i.e.,
+- * an object of {@code [[Class]]} "WeakMap}), since there is nothing
+- * unforgeable about the pseudo-internal method names used here,
+- * nothing prevents these emulated prototype methods from being
+- * applied to non-WeakMaps with pseudo-internal methods of the same
+- * names.
+- *
+- * <p>Another difference is that our emulated {@code
+- * WeakMap.prototype} is not itself a WeakMap. A problem with the
+- * current FF6.0a1 API is that WeakMap.prototype is itself a WeakMap
+- * providing ambient mutability and an ambient communications
+- * channel. Thus, if a WeakMap is already present and has this
+- * problem, repairES5.js wraps it in a safe wrappper in order to
+- * prevent access to this channel. (See
+- * PATCH_MUTABLE_FROZEN_WEAKMAP_PROTO in repairES5.js).
+- */
++        var v = cell[0]
++        var p = positions[v]
+ 
+-/**
+- * If this is a full <a href=
+- * "http://code.google.com/p/es-lab/wiki/SecureableES5"
+- * >secureable ES5</a> platform and the ES-Harmony {@code WeakMap} is
+- * absent, install an approximate emulation.
+- *
+- * <p>If WeakMap is present but cannot store some objects, use our approximate
+- * emulation as a wrapper.
+- *
+- * <p>If this is almost a secureable ES5 platform, then WeakMap.js
+- * should be run after repairES5.js.
+- *
+- * <p>See {@code WeakMap} for documentation of the garbage collection
+- * properties of this WeakMap emulation.
+- */
+-(function WeakMapModule() {
+-  "use strict";
++        //Check NaNs
++        for(var j=0; j<3; ++j) {
++          if(isNaN(p[j]) || !isFinite(p[j])) {
++            continue fill_loop
++          }
++        }
+ 
+-  if (typeof ses !== 'undefined' && ses.ok && !ses.ok()) {
+-    // already too broken, so give up
+-    return;
+-  }
++        pPos.push(p[0], p[1], p[2])
+ 
+-  /**
+-   * In some cases (current Firefox), we must make a choice betweeen a
+-   * WeakMap which is capable of using all varieties of host objects as
+-   * keys and one which is capable of safely using proxies as keys. See
+-   * comments below about HostWeakMap and DoubleWeakMap for details.
+-   *
+-   * This function (which is a global, not exposed to guests) marks a
+-   * WeakMap as permitted to do what is necessary to index all host
+-   * objects, at the cost of making it unsafe for proxies.
+-   *
+-   * Do not apply this function to anything which is not a genuine
+-   * fresh WeakMap.
+-   */
+-  function weakMapPermitHostObjects(map) {
+-    // identity of function used as a secret -- good enough and cheap
+-    if (map.permitHostObjects___) {
+-      map.permitHostObjects___(weakMapPermitHostObjects);
+-    }
+-  }
+-  if (typeof ses !== 'undefined') {
+-    ses.weakMapPermitHostObjects = weakMapPermitHostObjects;
+-  }
++        var c
++        if(vertexColors) {
++          c = vertexColors[v]
++        } else if(cellColors) {
++          c = cellColors[i]
++        } else {
++          c = meshColor
++        }
++        if(c.length === 3) {
++          pCol.push(c[0], c[1], c[2], 1)
++        } else {
++          pCol.push(c[0], c[1], c[2], c[3])
++        }
+ 
+-  // IE 11 has no Proxy but has a broken WeakMap such that we need to patch
+-  // it using DoubleWeakMap; this flag tells DoubleWeakMap so.
+-  var doubleWeakMapCheckSilentFailure = false;
++        var uv
++        if(vertexUVs) {
++          uv = vertexUVs[v]
++        } else if(vertexIntensity) {
++          uv = [
++            (vertexIntensity[v] - intensityLo) /
++            (intensityHi - intensityLo), 0]
++        } else if(cellUVs) {
++          uv = cellUVs[i]
++        } else if(cellIntensity) {
++          uv = [
++            (cellIntensity[i] - intensityLo) /
++            (intensityHi - intensityLo), 0]
++        } else {
++          uv = [
++            (p[2] - intensityLo) /
++            (intensityHi - intensityLo), 0]
++        }
++        pUVs.push(uv[0], uv[1])
+ 
+-  // Check if there is already a good-enough WeakMap implementation, and if so
+-  // exit without replacing it.
+-  if (typeof WeakMap === 'function') {
+-    var HostWeakMap = WeakMap;
+-    // There is a WeakMap -- is it good enough?
+-    if (typeof navigator !== 'undefined' &&
+-        /Firefox/.test(navigator.userAgent)) {
+-      // We're now *assuming not*, because as of this writing (2013-05-06)
+-      // Firefox's WeakMaps have a miscellany of objects they won't accept, and
+-      // we don't want to make an exhaustive list, and testing for just one
+-      // will be a problem if that one is fixed alone (as they did for Event).
++        if(pointSizes) {
++          pSiz.push(pointSizes[v])
++        } else {
++          pSiz.push(meshPointSize)
++        }
+ 
+-      // If there is a platform that we *can* reliably test on, here's how to
+-      // do it:
+-      //  var problematic = ... ;
+-      //  var testHostMap = new HostWeakMap();
+-      //  try {
+-      //    testHostMap.set(problematic, 1);  // Firefox 20 will throw here
+-      //    if (testHostMap.get(problematic) === 1) {
+-      //      return;
+-      //    }
+-      //  } catch (e) {}
++        pIds.push(i)
+ 
+-    } else {
+-      // IE 11 bug: WeakMaps silently fail to store frozen objects.
+-      var testMap = new HostWeakMap();
+-      var testObject = Object.freeze({});
+-      testMap.set(testObject, 1);
+-      if (testMap.get(testObject) !== 1) {
+-        doubleWeakMapCheckSilentFailure = true;
+-        // Fall through to installing our WeakMap.
+-      } else {
+-        module.exports = WeakMap;
+-        return;
+-      }
+-    }
+-  }
++        pointCount += 1
++      break
+ 
+-  var hop = Object.prototype.hasOwnProperty;
+-  var gopn = Object.getOwnPropertyNames;
+-  var defProp = Object.defineProperty;
+-  var isExtensible = Object.isExtensible;
++      case 2:
+ 
+-  /**
+-   * Security depends on HIDDEN_NAME being both <i>unguessable</i> and
+-   * <i>undiscoverable</i> by untrusted code.
+-   *
+-   * <p>Given the known weaknesses of Math.random() on existing
+-   * browsers, it does not generate unguessability we can be confident
+-   * of.
+-   *
+-   * <p>It is the monkey patching logic in this file that is intended
+-   * to ensure undiscoverability. The basic idea is that there are
+-   * three fundamental means of discovering properties of an object:
+-   * The for/in loop, Object.keys(), and Object.getOwnPropertyNames(),
+-   * as well as some proposed ES6 extensions that appear on our
+-   * whitelist. The first two only discover enumerable properties, and
+-   * we only use HIDDEN_NAME to name a non-enumerable property, so the
+-   * only remaining threat should be getOwnPropertyNames and some
+-   * proposed ES6 extensions that appear on our whitelist. We monkey
+-   * patch them to remove HIDDEN_NAME from the list of properties they
+-   * returns.
+-   *
+-   * <p>TODO(erights): On a platform with built-in Proxies, proxies
+-   * could be used to trap and thereby discover the HIDDEN_NAME, so we
+-   * need to monkey patch Proxy.create, Proxy.createFunction, etc, in
+-   * order to wrap the provided handler with the real handler which
+-   * filters out all traps using HIDDEN_NAME.
+-   *
+-   * <p>TODO(erights): Revisit Mike Stay's suggestion that we use an
+-   * encapsulated function at a not-necessarily-secret name, which
+-   * uses the Stiegler shared-state rights amplification pattern to
+-   * reveal the associated value only to the WeakMap in which this key
+-   * is associated with that value. Since only the key retains the
+-   * function, the function can also remember the key without causing
+-   * leakage of the key, so this doesn't violate our general gc
+-   * goals. In addition, because the name need not be a guarded
+-   * secret, we could efficiently handle cross-frame frozen keys.
+-   */
+-  var HIDDEN_NAME_PREFIX = 'weakmap:';
+-  var HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'ident:' + Math.random() + '___';
++        //Check NaNs
++        for(var j=0; j<2; ++j) {
++          var v = cell[j]
++          var p = positions[v]
++          for(var k=0; k<3; ++k) {
++            if(isNaN(p[k]) || !isFinite(p[k])) {
++              continue fill_loop
++            }
++          }
++        }
+ 
+-  if (typeof crypto !== 'undefined' &&
+-      typeof crypto.getRandomValues === 'function' &&
+-      typeof ArrayBuffer === 'function' &&
+-      typeof Uint8Array === 'function') {
+-    var ab = new ArrayBuffer(25);
+-    var u8s = new Uint8Array(ab);
+-    crypto.getRandomValues(u8s);
+-    HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'rand:' +
+-      Array.prototype.map.call(u8s, function(u8) {
+-        return (u8 % 36).toString(36);
+-      }).join('') + '___';
+-  }
++        for(var j=0; j<2; ++j) {
++          var v = cell[j]
++          var p = positions[v]
+ 
+-  function isNotHiddenName(name) {
+-    return !(
+-        name.substr(0, HIDDEN_NAME_PREFIX.length) == HIDDEN_NAME_PREFIX &&
+-        name.substr(name.length - 3) === '___');
+-  }
++          ePos.push(p[0], p[1], p[2])
+ 
+-  /**
+-   * Monkey patch getOwnPropertyNames to avoid revealing the
+-   * HIDDEN_NAME.
+-   *
+-   * <p>The ES5.1 spec requires each name to appear only once, but as
+-   * of this writing, this requirement is controversial for ES6, so we
+-   * made this code robust against this case. If the resulting extra
+-   * search turns out to be expensive, we can probably relax this once
+-   * ES6 is adequately supported on all major browsers, iff no browser
+-   * versions we support at that time have relaxed this constraint
+-   * without providing built-in ES6 WeakMaps.
+-   */
+-  defProp(Object, 'getOwnPropertyNames', {
+-    value: function fakeGetOwnPropertyNames(obj) {
+-      return gopn(obj).filter(isNotHiddenName);
+-    }
+-  });
++          var c
++          if(vertexColors) {
++            c = vertexColors[v]
++          } else if(cellColors) {
++            c = cellColors[i]
++          } else {
++            c = meshColor
++          }
++          if(c.length === 3) {
++            eCol.push(c[0], c[1], c[2], 1)
++          } else {
++            eCol.push(c[0], c[1], c[2], c[3])
++          }
+ 
+-  /**
+-   * getPropertyNames is not in ES5 but it is proposed for ES6 and
+-   * does appear in our whitelist, so we need to clean it too.
+-   */
+-  if ('getPropertyNames' in Object) {
+-    var originalGetPropertyNames = Object.getPropertyNames;
+-    defProp(Object, 'getPropertyNames', {
+-      value: function fakeGetPropertyNames(obj) {
+-        return originalGetPropertyNames(obj).filter(isNotHiddenName);
+-      }
+-    });
+-  }
++          var uv
++          if(vertexUVs) {
++            uv = vertexUVs[v]
++          } else if(vertexIntensity) {
++            uv = [
++              (vertexIntensity[v] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else if(cellUVs) {
++            uv = cellUVs[i]
++          } else if(cellIntensity) {
++            uv = [
++              (cellIntensity[i] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else {
++            uv = [
++              (p[2] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          }
++          eUVs.push(uv[0], uv[1])
+ 
+-  /**
+-   * <p>To treat objects as identity-keys with reasonable efficiency
+-   * on ES5 by itself (i.e., without any object-keyed collections), we
+-   * need to add a hidden property to such key objects when we
+-   * can. This raises several issues:
+-   * <ul>
+-   * <li>Arranging to add this property to objects before we lose the
+-   *     chance, and
+-   * <li>Hiding the existence of this new property from most
+-   *     JavaScript code.
+-   * <li>Preventing <i>certification theft</i>, where one object is
+-   *     created falsely claiming to be the key of an association
+-   *     actually keyed by another object.
+-   * <li>Preventing <i>value theft</i>, where untrusted code with
+-   *     access to a key object but not a weak map nevertheless
+-   *     obtains access to the value associated with that key in that
+-   *     weak map.
+-   * </ul>
+-   * We do so by
+-   * <ul>
+-   * <li>Making the name of the hidden property unguessable, so "[]"
+-   *     indexing, which we cannot intercept, cannot be used to access
+-   *     a property without knowing the name.
+-   * <li>Making the hidden property non-enumerable, so we need not
+-   *     worry about for-in loops or {@code Object.keys},
+-   * <li>monkey patching those reflective methods that would
+-   *     prevent extensions, to add this hidden property first,
+-   * <li>monkey patching those methods that would reveal this
+-   *     hidden property.
+-   * </ul>
+-   * Unfortunately, because of same-origin iframes, we cannot reliably
+-   * add this hidden property before an object becomes
+-   * non-extensible. Instead, if we encounter a non-extensible object
+-   * without a hidden record that we can detect (whether or not it has
+-   * a hidden record stored under a name secret to us), then we just
+-   * use the key object itself to represent its identity in a brute
+-   * force leaky map stored in the weak map, losing all the advantages
+-   * of weakness for these.
+-   */
+-  function getHiddenRecord(key) {
+-    if (key !== Object(key)) {
+-      throw new TypeError('Not an object: ' + key);
+-    }
+-    var hiddenRecord = key[HIDDEN_NAME];
+-    if (hiddenRecord && hiddenRecord.key === key) { return hiddenRecord; }
+-    if (!isExtensible(key)) {
+-      // Weak map must brute force, as explained in doc-comment above.
+-      return void 0;
+-    }
++          eIds.push(i)
++        }
++        edgeCount += 1
++      break
++
++      case 3:
++        //Check NaNs
++        for(var j=0; j<3; ++j) {
++          var v = cell[j]
++          var p = positions[v]
++          for(var k=0; k<3; ++k) {
++            if(isNaN(p[k]) || !isFinite(p[k])) {
++              continue fill_loop
++            }
++          }
++        }
+ 
+-    // The hiddenRecord and the key point directly at each other, via
+-    // the "key" and HIDDEN_NAME properties respectively. The key
+-    // field is for quickly verifying that this hidden record is an
+-    // own property, not a hidden record from up the prototype chain.
+-    //
+-    // NOTE: Because this WeakMap emulation is meant only for systems like
+-    // SES where Object.prototype is frozen without any numeric
+-    // properties, it is ok to use an object literal for the hiddenRecord.
+-    // This has two advantages:
+-    // * It is much faster in a performance critical place
+-    // * It avoids relying on Object.create(null), which had been
+-    //   problematic on Chrome 28.0.1480.0. See
+-    //   https://code.google.com/p/google-caja/issues/detail?id=1687
+-    hiddenRecord = { key: key };
++        for(var j=0; j<3; ++j) {
++          var v = cell[j]
+ 
+-    // When using this WeakMap emulation on platforms where
+-    // Object.prototype might not be frozen and Object.create(null) is
+-    // reliable, use the following two commented out lines instead.
+-    // hiddenRecord = Object.create(null);
+-    // hiddenRecord.key = key;
++          var p = positions[v]
++          tPos.push(p[0], p[1], p[2])
+ 
+-    // Please contact us if you need this to work on platforms where
+-    // Object.prototype might not be frozen and
+-    // Object.create(null) might not be reliable.
++          var c
++          if(vertexColors) {
++            c = vertexColors[v]
++          } else if(cellColors) {
++            c = cellColors[i]
++          } else {
++            c = meshColor
++          }
++          if(c.length === 3) {
++            tCol.push(c[0], c[1], c[2], 1)
++          } else {
++            tCol.push(c[0], c[1], c[2], c[3])
++          }
+ 
+-    try {
+-      defProp(key, HIDDEN_NAME, {
+-        value: hiddenRecord,
+-        writable: false,
+-        enumerable: false,
+-        configurable: false
+-      });
+-      return hiddenRecord;
+-    } catch (error) {
+-      // Under some circumstances, isExtensible seems to misreport whether
+-      // the HIDDEN_NAME can be defined.
+-      // The circumstances have not been isolated, but at least affect
+-      // Node.js v0.10.26 on TravisCI / Linux, but not the same version of
+-      // Node.js on OS X.
+-      return void 0;
+-    }
+-  }
++          var uv
++          if(vertexUVs) {
++            uv = vertexUVs[v]
++          } else if(vertexIntensity) {
++            uv = [
++              (vertexIntensity[v] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else if(cellUVs) {
++            uv = cellUVs[i]
++          } else if(cellIntensity) {
++            uv = [
++              (cellIntensity[i] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else {
++            uv = [
++              (p[2] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          }
++          tUVs.push(uv[0], uv[1])
+ 
+-  /**
+-   * Monkey patch operations that would make their argument
+-   * non-extensible.
+-   *
+-   * <p>The monkey patched versions throw a TypeError if their
+-   * argument is not an object, so it should only be done to functions
+-   * that should throw a TypeError anyway if their argument is not an
+-   * object.
+-   */
+-  (function(){
+-    var oldFreeze = Object.freeze;
+-    defProp(Object, 'freeze', {
+-      value: function identifyingFreeze(obj) {
+-        getHiddenRecord(obj);
+-        return oldFreeze(obj);
+-      }
+-    });
+-    var oldSeal = Object.seal;
+-    defProp(Object, 'seal', {
+-      value: function identifyingSeal(obj) {
+-        getHiddenRecord(obj);
+-        return oldSeal(obj);
+-      }
+-    });
+-    var oldPreventExtensions = Object.preventExtensions;
+-    defProp(Object, 'preventExtensions', {
+-      value: function identifyingPreventExtensions(obj) {
+-        getHiddenRecord(obj);
+-        return oldPreventExtensions(obj);
+-      }
+-    });
+-  })();
++          var q
++          if(vertexNormals) {
++            q = vertexNormals[v]
++          } else {
++            q = cellNormals[i]
++          }
++          tNor.push(q[0], q[1], q[2])
+ 
+-  function constFunc(func) {
+-    func.prototype = null;
+-    return Object.freeze(func);
+-  }
++          tIds.push(i)
++        }
++        triangleCount += 1
++      break
+ 
+-  var calledAsFunctionWarningDone = false;
+-  function calledAsFunctionWarning() {
+-    // Future ES6 WeakMap is currently (2013-09-10) expected to reject WeakMap()
+-    // but we used to permit it and do it ourselves, so warn only.
+-    if (!calledAsFunctionWarningDone && typeof console !== 'undefined') {
+-      calledAsFunctionWarningDone = true;
+-      console.warn('WeakMap should be invoked as new WeakMap(), not ' +
+-          'WeakMap(). This will be an error in the future.');
++      default:
++      break
+     }
+   }
+ 
+-  var nextId = 0;
++  this.pointCount     = pointCount
++  this.edgeCount      = edgeCount
++  this.triangleCount  = triangleCount
+ 
+-  var OurWeakMap = function() {
+-    if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
+-      calledAsFunctionWarning();
+-    }
++  this.pointPositions.update(pPos)
++  this.pointColors.update(pCol)
++  this.pointUVs.update(pUVs)
++  this.pointSizes.update(pSiz)
++  this.pointIds.update(new Uint32Array(pIds))
+ 
+-    // We are currently (12/25/2012) never encountering any prematurely
+-    // non-extensible keys.
+-    var keys = []; // brute force for prematurely non-extensible keys.
+-    var values = []; // brute force for corresponding values.
+-    var id = nextId++;
++  this.edgePositions.update(ePos)
++  this.edgeColors.update(eCol)
++  this.edgeUVs.update(eUVs)
++  this.edgeIds.update(new Uint32Array(eIds))
+ 
+-    function get___(key, opt_default) {
+-      var index;
+-      var hiddenRecord = getHiddenRecord(key);
+-      if (hiddenRecord) {
+-        return id in hiddenRecord ? hiddenRecord[id] : opt_default;
+-      } else {
+-        index = keys.indexOf(key);
+-        return index >= 0 ? values[index] : opt_default;
+-      }
+-    }
++  this.trianglePositions.update(tPos)
++  this.triangleColors.update(tCol)
++  this.triangleUVs.update(tUVs)
++  this.triangleNormals.update(tNor)
++  this.triangleIds.update(new Uint32Array(tIds))
++}
+ 
+-    function has___(key) {
+-      var hiddenRecord = getHiddenRecord(key);
+-      if (hiddenRecord) {
+-        return id in hiddenRecord;
+-      } else {
+-        return keys.indexOf(key) >= 0;
+-      }
+-    }
++proto.drawTransparent = proto.draw = function(params) {
++  params = params || {}
++  var gl          = this.gl
++  var model       = params.model      || identityMatrix
++  var view        = params.view       || identityMatrix
++  var projection  = params.projection || identityMatrix
+ 
+-    function set___(key, value) {
+-      var index;
+-      var hiddenRecord = getHiddenRecord(key);
+-      if (hiddenRecord) {
+-        hiddenRecord[id] = value;
+-      } else {
+-        index = keys.indexOf(key);
+-        if (index >= 0) {
+-          values[index] = value;
+-        } else {
+-          // Since some browsers preemptively terminate slow turns but
+-          // then continue computing with presumably corrupted heap
+-          // state, we here defensively get keys.length first and then
+-          // use it to update both the values and keys arrays, keeping
+-          // them in sync.
+-          index = keys.length;
+-          values[index] = value;
+-          // If we crash here, values will be one longer than keys.
+-          keys[index] = key;
+-        }
+-      }
+-      return this;
+-    }
++  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
++  for(var i=0; i<3; ++i) {
++    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
++    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
++  }
+ 
+-    function delete___(key) {
+-      var hiddenRecord = getHiddenRecord(key);
+-      var index, lastIndex;
+-      if (hiddenRecord) {
+-        return id in hiddenRecord && delete hiddenRecord[id];
+-      } else {
+-        index = keys.indexOf(key);
+-        if (index < 0) {
+-          return false;
+-        }
+-        // Since some browsers preemptively terminate slow turns but
+-        // then continue computing with potentially corrupted heap
+-        // state, we here defensively get keys.length first and then use
+-        // it to update both the keys and the values array, keeping
+-        // them in sync. We update the two with an order of assignments,
+-        // such that any prefix of these assignments will preserve the
+-        // key/value correspondence, either before or after the delete.
+-        // Note that this needs to work correctly when index === lastIndex.
+-        lastIndex = keys.length - 1;
+-        keys[index] = void 0;
+-        // If we crash here, there's a void 0 in the keys array, but
+-        // no operation will cause a "keys.indexOf(void 0)", since
+-        // getHiddenRecord(void 0) will always throw an error first.
+-        values[index] = values[lastIndex];
+-        // If we crash here, values[index] cannot be found here,
+-        // because keys[index] is void 0.
+-        keys[index] = keys[lastIndex];
+-        // If index === lastIndex and we crash here, then keys[index]
+-        // is still void 0, since the aliasing killed the previous key.
+-        keys.length = lastIndex;
+-        // If we crash here, keys will be one shorter than values.
+-        values.length = lastIndex;
+-        return true;
+-      }
+-    }
++  var uniforms = {
++    model:      model,
++    view:       view,
++    projection: projection,
+ 
+-    return Object.create(OurWeakMap.prototype, {
+-      get___:    { value: constFunc(get___) },
+-      has___:    { value: constFunc(has___) },
+-      set___:    { value: constFunc(set___) },
+-      delete___: { value: constFunc(delete___) }
+-    });
+-  };
++    clipBounds: clipBounds,
+ 
+-  OurWeakMap.prototype = Object.create(Object.prototype, {
+-    get: {
+-      /**
+-       * Return the value most recently associated with key, or
+-       * opt_default if none.
+-       */
+-      value: function get(key, opt_default) {
+-        return this.get___(key, opt_default);
+-      },
+-      writable: true,
+-      configurable: true
+-    },
++    kambient:   this.ambientLight,
++    kdiffuse:   this.diffuseLight,
++    kspecular:  this.specularLight,
++    roughness:  this.roughness,
++    fresnel:    this.fresnel,
+ 
+-    has: {
+-      /**
+-       * Is there a value associated with key in this WeakMap?
+-       */
+-      value: function has(key) {
+-        return this.has___(key);
+-      },
+-      writable: true,
+-      configurable: true
+-    },
++    eyePosition:   [0,0,0],
++    lightPosition: [0,0,0],
+ 
+-    set: {
+-      /**
+-       * Associate value with key in this WeakMap, overwriting any
+-       * previous association if present.
+-       */
+-      value: function set(key, value) {
+-        return this.set___(key, value);
+-      },
+-      writable: true,
+-      configurable: true
+-    },
++    opacity:  this.opacity,
+ 
+-    'delete': {
+-      /**
+-       * Remove any association for key in this WeakMap, returning
+-       * whether there was one.
+-       *
+-       * <p>Note that the boolean return here does not work like the
+-       * {@code delete} operator. The {@code delete} operator returns
+-       * whether the deletion succeeds at bringing about a state in
+-       * which the deleted property is absent. The {@code delete}
+-       * operator therefore returns true if the property was already
+-       * absent, whereas this {@code delete} method returns false if
+-       * the association was already absent.
+-       */
+-      value: function remove(key) {
+-        return this.delete___(key);
+-      },
+-      writable: true,
+-      configurable: true
++    contourColor: this.contourColor,
++
++    texture:    0
++  }
++
++  this.texture.bind(0)
++
++  var invCameraMatrix = new Array(16)
++  multiply(invCameraMatrix, uniforms.view, uniforms.model)
++  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
++  invert(invCameraMatrix, invCameraMatrix)
++
++  for(var i=0; i<3; ++i) {
++    uniforms.eyePosition[i] = invCameraMatrix[12+i] / invCameraMatrix[15]
++  }
++
++  var w = invCameraMatrix[15]
++  for(var i=0; i<3; ++i) {
++    w += this.lightPosition[i] * invCameraMatrix[4*i+3]
++  }
++  for(var i=0; i<3; ++i) {
++    var s = invCameraMatrix[12+i]
++    for(var j=0; j<3; ++j) {
++      s += invCameraMatrix[4*j+i] * this.lightPosition[j]
+     }
+-  });
++    uniforms.lightPosition[i] = s / w
++  }
+ 
+-  if (typeof HostWeakMap === 'function') {
+-    (function() {
+-      // If we got here, then the platform has a WeakMap but we are concerned
+-      // that it may refuse to store some key types. Therefore, make a map
+-      // implementation which makes use of both as possible.
++  if(this.triangleCount > 0) {
++    var shader = this.triShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-      // In this mode we are always using double maps, so we are not proxy-safe.
+-      // This combination does not occur in any known browser, but we had best
+-      // be safe.
+-      if (doubleWeakMapCheckSilentFailure && typeof Proxy !== 'undefined') {
+-        Proxy = undefined;
+-      }
++    this.triangleVAO.bind()
++    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
++    this.triangleVAO.unbind()
++  }
+ 
+-      function DoubleWeakMap() {
+-        if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
+-          calledAsFunctionWarning();
+-        }
++  if(this.edgeCount > 0 && this.lineWidth > 0) {
++    var shader = this.lineShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-        // Preferable, truly weak map.
+-        var hmap = new HostWeakMap();
++    this.edgeVAO.bind()
++    gl.lineWidth(this.lineWidth)
++    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
++    this.edgeVAO.unbind()
++  }
+ 
+-        // Our hidden-property-based pseudo-weak-map. Lazily initialized in the
+-        // 'set' implementation; thus we can avoid performing extra lookups if
+-        // we know all entries actually stored are entered in 'hmap'.
+-        var omap = undefined;
++  if(this.pointCount > 0) {
++    var shader = this.pointShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-        // Hidden-property maps are not compatible with proxies because proxies
+-        // can observe the hidden name and either accidentally expose it or fail
+-        // to allow the hidden property to be set. Therefore, we do not allow
+-        // arbitrary WeakMaps to switch to using hidden properties, but only
+-        // those which need the ability, and unprivileged code is not allowed
+-        // to set the flag.
+-        //
+-        // (Except in doubleWeakMapCheckSilentFailure mode in which case we
+-        // disable proxies.)
+-        var enableSwitching = false;
++    this.pointVAO.bind()
++    gl.drawArrays(gl.POINTS, 0, this.pointCount)
++    this.pointVAO.unbind()
++  }
+ 
+-        function dget(key, opt_default) {
+-          if (omap) {
+-            return hmap.has(key) ? hmap.get(key)
+-                : omap.get___(key, opt_default);
+-          } else {
+-            return hmap.get(key, opt_default);
+-          }
+-        }
++  if(this.contourEnable && this.contourCount > 0 && this.contourLineWidth > 0) {
++    var shader = this.contourShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-        function dhas(key) {
+-          return hmap.has(key) || (omap ? omap.has___(key) : false);
+-        }
++    this.contourVAO.bind()
++    gl.drawArrays(gl.LINES, 0, this.contourCount)
++    this.contourVAO.unbind()
++  }
++}
+ 
+-        var dset;
+-        if (doubleWeakMapCheckSilentFailure) {
+-          dset = function(key, value) {
+-            hmap.set(key, value);
+-            if (!hmap.has(key)) {
+-              if (!omap) { omap = new OurWeakMap(); }
+-              omap.set(key, value);
+-            }
+-            return this;
+-          };
+-        } else {
+-          dset = function(key, value) {
+-            if (enableSwitching) {
+-              try {
+-                hmap.set(key, value);
+-              } catch (e) {
+-                if (!omap) { omap = new OurWeakMap(); }
+-                omap.set___(key, value);
+-              }
+-            } else {
+-              hmap.set(key, value);
+-            }
+-            return this;
+-          };
+-        }
++proto.drawPick = function(params) {
++  params = params || {}
+ 
+-        function ddelete(key) {
+-          var result = !!hmap['delete'](key);
+-          if (omap) { return omap.delete___(key) || result; }
+-          return result;
+-        }
++  var gl         = this.gl
+ 
+-        return Object.create(OurWeakMap.prototype, {
+-          get___:    { value: constFunc(dget) },
+-          has___:    { value: constFunc(dhas) },
+-          set___:    { value: constFunc(dset) },
+-          delete___: { value: constFunc(ddelete) },
+-          permitHostObjects___: { value: constFunc(function(token) {
+-            if (token === weakMapPermitHostObjects) {
+-              enableSwitching = true;
+-            } else {
+-              throw new Error('bogus call to permitHostObjects___');
+-            }
+-          })}
+-        });
+-      }
+-      DoubleWeakMap.prototype = OurWeakMap.prototype;
+-      module.exports = DoubleWeakMap;
++  var model      = params.model      || identityMatrix
++  var view       = params.view       || identityMatrix
++  var projection = params.projection || identityMatrix
+ 
+-      // define .constructor to hide OurWeakMap ctor
+-      Object.defineProperty(WeakMap.prototype, 'constructor', {
+-        value: WeakMap,
+-        enumerable: false,  // as default .constructor is
+-        configurable: true,
+-        writable: true
+-      });
+-    })();
+-  } else {
+-    // There is no host WeakMap, so we must use the emulation.
++  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
++  for(var i=0; i<3; ++i) {
++    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
++    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
++  }
+ 
+-    // Emulated WeakMaps are incompatible with native proxies (because proxies
+-    // can observe the hidden name), so we must disable Proxy usage (in
+-    // ArrayLike and Domado, currently).
+-    if (typeof Proxy !== 'undefined') {
+-      Proxy = undefined;
+-    }
++  //Save camera parameters
++  this._model      = [].slice.call(model)
++  this._view       = [].slice.call(view)
++  this._projection = [].slice.call(projection)
++  this._resolution = [gl.drawingBufferWidth, gl.drawingBufferHeight]
++
++  var uniforms = {
++    model:      model,
++    view:       view,
++    projection: projection,
++    clipBounds: clipBounds,
++    pickId:     this.pickId / 255.0,
++  }
++
++  var shader = this.pickShader
++  shader.bind()
++  shader.uniforms = uniforms
+ 
+-    module.exports = OurWeakMap;
++  if(this.triangleCount > 0) {
++    this.triangleVAO.bind()
++    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
++    this.triangleVAO.unbind()
+   }
+-})();
+ 
+-},{}],145:[function(require,module,exports){
+-'use strict'
++  if(this.edgeCount > 0) {
++    this.edgeVAO.bind()
++    gl.lineWidth(this.lineWidth)
++    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
++    this.edgeVAO.unbind()
++  }
+ 
+-var weakMap      = typeof WeakMap === 'undefined' ? require('weak-map') : WeakMap
+-var createBuffer = require('gl-buffer')
+-var createVAO    = require('gl-vao')
++  if(this.pointCount > 0) {
++    var shader = this.pointPickShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-var TriangleCache = new weakMap()
++    this.pointVAO.bind()
++    gl.drawArrays(gl.POINTS, 0, this.pointCount)
++    this.pointVAO.unbind()
++  }
++}
+ 
+-function createABigTriangle(gl) {
+ 
+-  var triangleVAO = TriangleCache.get(gl)
+-  if(!triangleVAO || !gl.isBuffer(triangleVAO._triangleBuffer.buffer)) {
+-    var buf = createBuffer(gl, new Float32Array([-1, -1, -1, 4, 4, -1]))
+-    triangleVAO = createVAO(gl, [
+-      { buffer: buf,
+-        type: gl.FLOAT,
+-        size: 2
+-      }
+-    ])
+-    triangleVAO._triangleBuffer = buf
+-    TriangleCache.set(gl, triangleVAO)
++proto.pick = function(pickData) {
++  if(!pickData) {
++    return null
++  }
++  if(pickData.id !== this.pickId) {
++    return null
+   }
+-  triangleVAO.bind()
+-  gl.drawArrays(gl.TRIANGLES, 0, 3)
+-  triangleVAO.unbind()
+-}
+ 
+-module.exports = createABigTriangle
++  var cellId    = pickData.value[0] + 256*pickData.value[1] + 65536*pickData.value[2]
++  var cell      = this.cells[cellId]
++  var positions = this.positions
+ 
+-},{"gl-buffer":105,"gl-vao":192,"weak-map":144}],146:[function(require,module,exports){
+-'use strict'
++  var simplex   = new Array(cell.length)
++  for(var i=0; i<cell.length; ++i) {
++    simplex[i] = positions[cell[i]]
++  }
+ 
+-module.exports = createAxes
++  var data = closestPoint(
++    simplex,
++    [pickData.coord[0], this._resolution[1]-pickData.coord[1]],
++    this._model,
++    this._view,
++    this._projection,
++    this._resolution)
+ 
+-var createText        = require('./lib/text.js')
+-var createLines       = require('./lib/lines.js')
+-var createBackground  = require('./lib/background.js')
+-var getCubeProperties = require('./lib/cube.js')
+-var Ticks             = require('./lib/ticks.js')
++  if(!data) {
++    return null
++  }
+ 
+-var identity = new Float32Array([
+-  1, 0, 0, 0,
+-  0, 1, 0, 0,
+-  0, 0, 1, 0,
+-  0, 0, 0, 1])
++  var weights = data[2]
++  var interpIntensity = 0.0
++  for(var i=0; i<cell.length; ++i) {
++    interpIntensity += weights[i] * this.intensity[cell[i]]
++  }
+ 
+-function copyVec3(a, b) {
+-  a[0] = b[0]
+-  a[1] = b[1]
+-  a[2] = b[2]
+-  return a
++  return {
++    position: data[1],
++    index:    cell[data[0]],
++    cell:     cell,
++    cellId:   cellId,
++    intensity:  interpIntensity,
++    dataCoordinate: this.positions[cell[data[0]]]
++  }
+ }
+ 
+-function Axes(gl) {
+-  this.gl             = gl
+ 
+-  this.pixelRatio     = 1
++proto.dispose = function() {
++  this.texture.dispose()
+ 
+-  this.bounds         = [ [-10, -10, -10],
+-                          [ 10,  10,  10] ]
+-  this.ticks          = [ [], [], [] ]
+-  this.autoTicks      = true
+-  this.tickSpacing    = [ 1, 1, 1 ]
++  this.triShader.dispose()
++  this.lineShader.dispose()
++  this.pointShader.dispose()
++  this.pickShader.dispose()
++  this.pointPickShader.dispose()
+ 
+-  this.tickEnable     = [ true, true, true ]
+-  this.tickFont       = [ 'sans-serif', 'sans-serif', 'sans-serif' ]
+-  this.tickSize       = [ 12, 12, 12 ]
+-  this.tickAngle      = [ 0, 0, 0 ]
+-  this.tickColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+-  this.tickPad        = [ 10, 10, 10 ]
++  this.triangleVAO.dispose()
++  this.trianglePositions.dispose()
++  this.triangleColors.dispose()
++  this.triangleUVs.dispose()
++  this.triangleNormals.dispose()
++  this.triangleIds.dispose()
+ 
+-  this.lastCubeProps  = {
+-    cubeEdges: [0,0,0],
+-    axis:      [0,0,0]
+-  }
++  this.edgeVAO.dispose()
++  this.edgePositions.dispose()
++  this.edgeColors.dispose()
++  this.edgeUVs.dispose()
++  this.edgeIds.dispose()
+ 
+-  this.labels         = [ 'x', 'y', 'z' ]
+-  this.labelEnable    = [ true, true, true ]
+-  this.labelFont      = 'sans-serif'
+-  this.labelSize      = [ 20, 20, 20 ]
+-  this.labelAngle     = [ 0, 0, 0 ]
+-  this.labelColor     = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+-  this.labelPad       = [ 10, 10, 10 ]
++  this.pointVAO.dispose()
++  this.pointPositions.dispose()
++  this.pointColors.dispose()
++  this.pointUVs.dispose()
++  this.pointSizes.dispose()
++  this.pointIds.dispose()
+ 
+-  this.lineEnable     = [ true, true, true ]
+-  this.lineMirror     = [ false, false, false ]
+-  this.lineWidth      = [ 1, 1, 1 ]
+-  this.lineColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++  this.contourVAO.dispose()
++  this.contourPositions.dispose()
++  this.contourShader.dispose()
++}
+ 
+-  this.lineTickEnable = [ true, true, true ]
+-  this.lineTickMirror = [ false, false, false ]
+-  this.lineTickLength = [ 0, 0, 0 ]
+-  this.lineTickWidth  = [ 1, 1, 1 ]
+-  this.lineTickColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++function createMeshShader(gl) {
++  var shader = createShader(gl, meshShader)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location    = 2
++  shader.attributes.uv.location       = 3
++  shader.attributes.normal.location   = 4
++  return shader
++}
+ 
+-  this.gridEnable     = [ true, true, true ]
+-  this.gridWidth      = [ 1, 1, 1 ]
+-  this.gridColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++function createWireShader(gl) {
++  var shader = createShader(gl, wireShader)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location    = 2
++  shader.attributes.uv.location       = 3
++  return shader
++}
+ 
+-  this.zeroEnable     = [ true, true, true ]
+-  this.zeroLineColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+-  this.zeroLineWidth  = [ 2, 2, 2 ]
++function createPointShader(gl) {
++  var shader = createShader(gl, pointShader)
++  shader.attributes.position.location  = 0
++  shader.attributes.color.location     = 2
++  shader.attributes.uv.location        = 3
++  shader.attributes.pointSize.location = 4
++  return shader
++}
+ 
+-  this.backgroundEnable = [ false, false, false ]
+-  this.backgroundColor  = [ [0.8, 0.8, 0.8, 0.5],
+-                            [0.8, 0.8, 0.8, 0.5],
+-                            [0.8, 0.8, 0.8, 0.5] ]
++function createPickShader(gl) {
++  var shader = createShader(gl, pickShader)
++  shader.attributes.position.location = 0
++  shader.attributes.id.location       = 1
++  return shader
++}
+ 
+-  this._firstInit = true
+-  this._text  = null
+-  this._lines = null
+-  this._background = createBackground(gl)
++function createPointPickShader(gl) {
++  var shader = createShader(gl, pointPickShader)
++  shader.attributes.position.location  = 0
++  shader.attributes.id.location        = 1
++  shader.attributes.pointSize.location = 4
++  return shader
+ }
+ 
+-var proto = Axes.prototype
++function createContourShader(gl) {
++  var shader = createShader(gl, contourShader)
++  shader.attributes.position.location = 0
++  return shader
++}
+ 
+-proto.update = function(options) {
+-  options = options || {}
++function createSimplicialMesh(params) {
++  var gl = params.gl
+ 
+-  //Option parsing helper functions
+-  function parseOption(nest, cons, name) {
+-    if(name in options) {
+-      var opt = options[name]
+-      var prev = this[name]
+-      var next
+-      if(nest ? (Array.isArray(opt) && Array.isArray(opt[0])) :
+-                 Array.isArray(opt) ) {
+-        this[name] = next = [ cons(opt[0]), cons(opt[1]), cons(opt[2]) ]
+-      } else {
+-        this[name] = next = [ cons(opt), cons(opt), cons(opt) ]
+-      }
+-      for(var i=0; i<3; ++i) {
+-        if(next[i] !== prev[i]) {
+-          return true
+-        }
+-      }
+-    }
+-    return false
+-  }
++  var triShader       = createMeshShader(gl)
++  var lineShader      = createWireShader(gl)
++  var pointShader     = createPointShader(gl)
++  var pickShader      = createPickShader(gl)
++  var pointPickShader = createPointPickShader(gl)
++  var contourShader   = createContourShader(gl)
+ 
+-  var NUMBER  = parseOption.bind(this, false, Number)
+-  var BOOLEAN = parseOption.bind(this, false, Boolean)
+-  var STRING  = parseOption.bind(this, false, String)
+-  var COLOR   = parseOption.bind(this, true, function(v) {
+-    if(Array.isArray(v)) {
+-      if(v.length === 3) {
+-        return [ +v[0], +v[1], +v[2], 1.0 ]
+-      } else if(v.length === 4) {
+-        return [ +v[0], +v[1], +v[2], +v[3] ]
+-      }
+-    }
+-    return [ 0, 0, 0, 1 ]
+-  })
++  var meshTexture       = createTexture(gl,
++    ndarray(new Uint8Array([255,255,255,255]), [1,1,4]))
++  meshTexture.generateMipmap()
++  meshTexture.minFilter = gl.LINEAR_MIPMAP_LINEAR
++  meshTexture.magFilter = gl.LINEAR
+ 
+-  //Tick marks and bounds
+-  var nextTicks
+-  var ticksUpdate   = false
+-  var boundsChanged = false
+-  if('bounds' in options) {
+-    var bounds = options.bounds
+-i_loop:
+-    for(var i=0; i<2; ++i) {
+-      for(var j=0; j<3; ++j) {
+-        if(bounds[i][j] !== this.bounds[i][j]) {
+-          boundsChanged = true
+-        }
+-        this.bounds[i][j] = bounds[i][j]
+-      }
++  var trianglePositions = createBuffer(gl)
++  var triangleColors    = createBuffer(gl)
++  var triangleUVs       = createBuffer(gl)
++  var triangleNormals   = createBuffer(gl)
++  var triangleIds       = createBuffer(gl)
++  var triangleVAO       = createVAO(gl, [
++    { buffer: trianglePositions,
++      type: gl.FLOAT,
++      size: 3
++    },
++    { buffer: triangleIds,
++      type: gl.UNSIGNED_BYTE,
++      size: 4,
++      normalized: true
++    },
++    { buffer: triangleColors,
++      type: gl.FLOAT,
++      size: 4
++    },
++    { buffer: triangleUVs,
++      type: gl.FLOAT,
++      size: 2
++    },
++    { buffer: triangleNormals,
++      type: gl.FLOAT,
++      size: 3
+     }
+-  }
+-  if('ticks' in options) {
+-    nextTicks      = options.ticks
+-    ticksUpdate    = true
+-    this.autoTicks = false
+-    for(var i=0; i<3; ++i) {
+-      this.tickSpacing[i] = 0.0
++  ])
++
++  var edgePositions = createBuffer(gl)
++  var edgeColors    = createBuffer(gl)
++  var edgeUVs       = createBuffer(gl)
++  var edgeIds       = createBuffer(gl)
++  var edgeVAO       = createVAO(gl, [
++    { buffer: edgePositions,
++      type: gl.FLOAT,
++      size: 3
++    },
++    { buffer: edgeIds,
++      type: gl.UNSIGNED_BYTE,
++      size: 4,
++      normalized: true
++    },
++    { buffer: edgeColors,
++      type: gl.FLOAT,
++      size: 4
++    },
++    { buffer: edgeUVs,
++      type: gl.FLOAT,
++      size: 2
+     }
+-  } else if(NUMBER('tickSpacing')) {
+-    this.autoTicks  = true
+-    boundsChanged   = true
+-  }
++  ])
+ 
+-  if(this._firstInit) {
+-    if(!('ticks' in options || 'tickSpacing' in options)) {
+-      this.autoTicks = true
++  var pointPositions  = createBuffer(gl)
++  var pointColors     = createBuffer(gl)
++  var pointUVs        = createBuffer(gl)
++  var pointSizes      = createBuffer(gl)
++  var pointIds        = createBuffer(gl)
++  var pointVAO        = createVAO(gl, [
++    { buffer: pointPositions,
++      type: gl.FLOAT,
++      size: 3
++    },
++    { buffer: pointIds,
++      type: gl.UNSIGNED_BYTE,
++      size: 4,
++      normalized: true
++    },
++    { buffer: pointColors,
++      type: gl.FLOAT,
++      size: 4
++    },
++    { buffer: pointUVs,
++      type: gl.FLOAT,
++      size: 2
++    },
++    { buffer: pointSizes,
++      type: gl.FLOAT,
++      size: 1
+     }
++  ])
+ 
+-    //Force tick recomputation on first update
+-    boundsChanged   = true
+-    ticksUpdate     = true
+-    this._firstInit = false
+-  }
++  var contourPositions = createBuffer(gl)
++  var contourVAO       = createVAO(gl, [
++    { buffer: contourPositions,
++      type:   gl.FLOAT,
++      size:   3
++    }])
+ 
+-  if(boundsChanged && this.autoTicks) {
+-    nextTicks = Ticks.create(this.bounds, this.tickSpacing)
+-    ticksUpdate = true
+-  }
++  var mesh = new SimplicialMesh(gl
++    , meshTexture
++    , triShader
++    , lineShader
++    , pointShader
++    , pickShader
++    , pointPickShader
++    , contourShader
++    , trianglePositions
++    , triangleIds
++    , triangleColors
++    , triangleUVs
++    , triangleNormals
++    , triangleVAO
++    , edgePositions
++    , edgeIds
++    , edgeColors
++    , edgeUVs
++    , edgeVAO
++    , pointPositions
++    , pointIds
++    , pointColors
++    , pointUVs
++    , pointSizes
++    , pointVAO
++    , contourPositions
++    , contourVAO)
+ 
+-  //Compare next ticks to previous ticks, only update if needed
+-  if(ticksUpdate) {
+-    for(var i=0; i<3; ++i) {
+-      nextTicks[i].sort(function(a,b) {
+-        return a.x-b.x
+-      })
+-    }
+-    if(Ticks.equal(nextTicks, this.ticks)) {
+-      ticksUpdate = false
+-    } else {
+-      this.ticks = nextTicks
+-    }
+-  }
++  mesh.update(params)
+ 
+-  //Parse tick properties
+-  BOOLEAN('tickEnable')
+-  if(STRING('tickFont')) {
+-    ticksUpdate = true  //If font changes, must rebuild vbo
+-  }
+-  NUMBER('tickSize')
+-  NUMBER('tickAngle')
+-  NUMBER('tickPad')
+-  COLOR('tickColor')
++  return mesh
++}
+ 
+-  //Axis labels
+-  var labelUpdate = STRING('labels')
+-  if(STRING('labelFont')) {
+-    labelUpdate = true
+-  }
+-  BOOLEAN('labelEnable')
+-  NUMBER('labelSize')
+-  NUMBER('labelPad')
+-  COLOR('labelColor')
++module.exports = createSimplicialMesh
+ 
+-  //Axis lines
+-  BOOLEAN('lineEnable')
+-  BOOLEAN('lineMirror')
+-  NUMBER('lineWidth')
+-  COLOR('lineColor')
++},{"./lib/closest-point":123,"./lib/shaders":124,"colormap":61,"gl-buffer":94,"gl-mat4/invert":111,"gl-mat4/multiply":113,"gl-shader":133,"gl-texture2d":144,"gl-vao":148,"ndarray":191,"normals":193,"simplicial-complex-contour":227,"typedarray-pool":246}],126:[function(require,module,exports){
+ 
+-  //Axis line ticks
+-  BOOLEAN('lineTickEnable')
+-  BOOLEAN('lineTickMirror')
+-  NUMBER('lineTickLength')
+-  NUMBER('lineTickWidth')
+-  COLOR('lineTickColor')
++var createShader = require('gl-shader')
+ 
+-  //Grid lines
+-  BOOLEAN('gridEnable')
+-  NUMBER('gridWidth')
+-  COLOR('gridColor')
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\nattribute vec2 position;\nvarying vec2 uv;\nvoid main() {\n  uv = position;\n  gl_Position = vec4(position, 0, 1);\n}"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D accumBuffer;\nvarying vec2 uv;\n\nvoid main() {\n  vec4 accum = texture2D(accumBuffer, 0.5 * (uv + 1.0));\n  gl_FragColor = min(vec4(1,1,1,1), accum);\n}"
+ 
+-  //Zero line
+-  BOOLEAN('zeroEnable')
+-  COLOR('zeroLineColor')
+-  NUMBER('zeroLineWidth')
++module.exports = function(gl) {
++  return createShader(gl, vertSrc, fragSrc, null, [ { name: 'position', type: 'vec2'}])
++}
+ 
+-  //Background
+-  BOOLEAN('backgroundEnable')
+-  COLOR('backgroundColor')
++},{"gl-shader":133}],127:[function(require,module,exports){
++'use strict'
+ 
+-  //Update text if necessary
+-  if(!this._text) {
+-    this._text = createText(
+-      this.gl,
+-      this.bounds,
+-      this.labels,
+-      this.labelFont,
+-      this.ticks,
+-      this.tickFont)
+-  } else if(this._text && (labelUpdate || ticksUpdate)) {
+-    this._text.update(
+-      this.bounds,
+-      this.labels,
+-      this.labelFont,
+-      this.ticks,
+-      this.tickFont)
+-  }
++module.exports = createScene
++
++var createCamera = require('3d-view-controls')
++var createAxes   = require('gl-axes3d')
++var axesRanges   = require('gl-axes3d/properties')
++var createSpikes = require('gl-spikes3d')
++var createSelect = require('gl-select-static')
++var createFBO    = require('gl-fbo')
++var drawTriangle = require('a-big-triangle')
++var mouseChange  = require('mouse-change')
++var perspective  = require('gl-mat4/perspective')
++var createShader = require('./lib/shader')
++
++function MouseSelect() {
++  this.mouse          = [-1,-1]
++  this.screen         = null
++  this.distance       = Infinity
++  this.index          = null
++  this.dataCoordinate = null
++  this.dataPosition   = null
++  this.object         = null
++  this.data           = null
++}
+ 
+-  //Update lines if necessary
+-  if(this._lines && ticksUpdate) {
+-    this._lines.dispose()
+-    this._lines = null
++function getContext(canvas, options) {
++  var gl = null
++  try {
++    gl = canvas.getContext('webgl', options)
++    if(!gl) {
++      gl = canvas.getContext('experimental-webgl', options)
++    }
++  } catch(e) {
++    return null
+   }
+-  if(!this._lines) {
+-    this._lines = createLines(this.gl, this.bounds, this.ticks)
++  return gl
++}
++
++function roundUpPow10(x) {
++  var y = Math.round(Math.log(Math.abs(x)) / Math.log(10))
++  if(y < 0) {
++    var base = Math.round(Math.pow(10, -y))
++    return Math.ceil(x*base) / base
++  } else if(y > 0) {
++    var base = Math.round(Math.pow(10, y))
++    return Math.ceil(x/base) * base
+   }
++  return Math.ceil(x)
+ }
+ 
+-function OffsetInfo() {
+-  this.primalOffset = [0,0,0]
+-  this.primalMinor  = [0,0,0]
+-  this.mirrorOffset = [0,0,0]
+-  this.mirrorMinor  = [0,0,0]
++function defaultBool(x) {
++  if(typeof x === 'boolean') {
++    return x
++  }
++  return true
+ }
+ 
+-var LINE_OFFSET = [ new OffsetInfo(), new OffsetInfo(), new OffsetInfo() ]
++function createScene(options) {
++  options = options || {}
+ 
+-function computeLineOffset(result, i, bounds, cubeEdges, cubeAxis) {
+-  var primalOffset = result.primalOffset
+-  var primalMinor  = result.primalMinor
+-  var dualOffset   = result.mirrorOffset
+-  var dualMinor    = result.mirrorMinor
+-  var e = cubeEdges[i]
++  var stopped = false
+ 
+-  //Calculate offsets
+-  for(var j=0; j<3; ++j) {
+-    if(i === j) {
+-      continue
+-    }
+-    var a = primalOffset,
+-        b = dualOffset,
+-        c = primalMinor,
+-        d = dualMinor
+-    if(e & (1<<j)) {
+-      a = dualOffset
+-      b = primalOffset
+-      c = dualMinor
+-      d = primalMinor
+-    }
+-    a[j] = bounds[0][j]
+-    b[j] = bounds[1][j]
+-    if(cubeAxis[j] > 0) {
+-      c[j] = -1
+-      d[j] = 0
++  var pixelRatio = options.pixelRatio || parseFloat(window.devicePixelRatio)
++
++  var canvas = options.canvas
++  if(!canvas) {
++    canvas = document.createElement('canvas')
++    if(options.container) {
++      var container = options.container
++      container.appendChild(canvas)
+     } else {
+-      c[j] = 0
+-      d[j] = +1
++      document.body.appendChild(canvas)
+     }
+   }
+-}
+-
+-var CUBE_ENABLE = [0,0,0]
+-var DEFAULT_PARAMS = {
+-  model:      identity,
+-  view:       identity,
+-  projection: identity
+-}
+ 
+-proto.isOpaque = function() {
+-  return true
+-}
++  var gl = options.gl
++  if(!gl) {
++    gl = getContext(canvas,
++      options.glOptions || {
++        premultipliedAlpha: true,
++        antialias: true
++      })
++  }
++  if(!gl) {
++    throw new Error('webgl not supported')
++  }
+ 
+-proto.isTransparent = function() {
+-  return false
+-}
++  //Initial bounds
++  var bounds = options.bounds || [[-10,-10,-10], [10,10,10]]
+ 
+-proto.drawTransparent = function(params) {}
++  //Create selection
++  var selection = new MouseSelect()
+ 
++  //Accumulation buffer
++  var accumBuffer = createFBO(gl,
++    [gl.drawingBufferWidth, gl.drawingBufferHeight], {
++      preferFloat: true
++    })
+ 
+-var PRIMAL_MINOR  = [0,0,0]
+-var MIRROR_MINOR  = [0,0,0]
+-var PRIMAL_OFFSET = [0,0,0]
++  var accumShader = createShader(gl)
+ 
+-proto.draw = function(params) {
+-  params = params || DEFAULT_PARAMS
++  //Create a camera
++  var cameraOptions = options.camera || {
++    eye:    [2,0,0],
++    center: [0,0,0],
++    up:     [0,1,0],
++    zoomMin: 0.1,
++    zoomMax: 100,
++    mode:    'turntable'
++  }
+ 
+-  var gl = this.gl
++  //Create axes
++  var axesOptions = options.axes || {}
++  var axes = createAxes(gl, axesOptions)
++  axes.enable = !axesOptions.disable
+ 
+-  //Geometry for camera and axes
+-  var model       = params.model || identity
+-  var view        = params.view || identity
+-  var projection  = params.projection || identity
+-  var bounds      = this.bounds
++  //Create spikes
++  var spikeOptions = options.spikes || {}
++  var spikes = createSpikes(gl, spikeOptions)
+ 
+-  //Unpack axis info
+-  var cubeParams  = getCubeProperties(model, view, projection, bounds)
+-  var cubeEdges   = cubeParams.cubeEdges
+-  var cubeAxis    = cubeParams.axis
++  //Object list is empty initially
++  var objects         = []
++  var pickBufferIds   = []
++  var pickBufferCount = []
++  var pickBuffers     = []
+ 
+-  var cx = view[12]
+-  var cy = view[13]
+-  var cz = view[14]
+-  var cw = view[15]
++  //Dirty flag, skip redraw if scene static
++  var dirty       = true
++  var pickDirty   = true
+ 
+-  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
++  var projection     = new Array(16)
++  var model          = new Array(16)
+ 
+-  for(var i=0; i<3; ++i) {
+-    this.lastCubeProps.cubeEdges[i] = cubeEdges[i]
+-    this.lastCubeProps.axis[i] = cubeAxis[i]
++  var cameraParams = {
++    view:         null,
++    projection:   projection,
++    model:        model
+   }
+ 
+-  //Compute axis info
+-  var lineOffset  = LINE_OFFSET
+-  for(var i=0; i<3; ++i) {
+-    computeLineOffset(
+-      LINE_OFFSET[i],
+-      i,
+-      this.bounds,
+-      cubeEdges,
+-      cubeAxis)
+-  }
++  var pickDirty = true
+ 
+-  //Set up state parameters
+-  var gl = this.gl
++  var viewShape = [ gl.drawingBufferWidth, gl.drawingBufferHeight ]
+ 
+-  //Draw background first
+-  var cubeEnable = CUBE_ENABLE
+-  for(var i=0; i<3; ++i) {
+-    if(this.backgroundEnable[i]) {
+-      cubeEnable[i] = cubeAxis[i]
+-    } else {
+-      cubeEnable[i] = 0
+-    }
++  //Create scene object
++  var scene = {
++    gl:           gl,
++    contextLost:  false,
++    pixelRatio:   options.pixelRatio || parseFloat(window.devicePixelRatio),
++    canvas:       canvas,
++    selection:    selection,
++    camera:       createCamera(canvas, cameraOptions),
++    axes:         axes,
++    axesPixels:   null,
++    spikes:       spikes,
++    bounds:       bounds,
++    objects:      objects,
++    shape:        viewShape,
++    aspect:       options.aspectRatio || [1,1,1],
++    pickRadius:   options.pickRadius || 10,
++    zNear:        options.zNear || 0.01,
++    zFar:         options.zFar  || 1000,
++    fovy:         options.fovy  || Math.PI/4,
++    clearColor:   options.clearColor || [0,0,0,0],
++    autoResize:   defaultBool(options.autoResize),
++    autoBounds:   defaultBool(options.autoBounds),
++    autoScale:    !!options.autoScale,
++    autoCenter:   defaultBool(options.autoCenter),
++    clipToBounds: defaultBool(options.clipToBounds),
++    snapToData:   !!options.snapToData,
++    onselect:     options.onselect || null,
++    onrender:     options.onrender || null,
++    onclick:      options.onclick  || null,
++    cameraParams: cameraParams,
++    oncontextloss: null,
++    mouseListener: null
+   }
+ 
+-  this._background.draw(
+-    model,
+-    view,
+-    projection,
+-    bounds,
+-    cubeEnable,
+-    this.backgroundColor)
+-
+-  //Draw lines
+-  this._lines.bind(
+-    model,
+-    view,
+-    projection,
+-    this)
++  var pickShape = [ (gl.drawingBufferWidth/scene.pixelRatio)|0, (gl.drawingBufferHeight/scene.pixelRatio)|0 ]
+ 
+-  //First draw grid lines and zero lines
+-  for(var i=0; i<3; ++i) {
+-    var x = [0,0,0]
+-    if(cubeAxis[i] > 0) {
+-      x[i] = bounds[1][i]
++  function resizeListener() {
++    if(stopped) {
++      return
++    }
++    if(!scene.autoResize) {
++      return
++    }
++    var parent = canvas.parentNode
++    var width  = 1
++    var height = 1
++    if(parent && parent !== document.body) {
++      width  = parent.clientWidth
++      height = parent.clientHeight
+     } else {
+-      x[i] = bounds[0][i]
++      width  = window.innerWidth
++      height = window.innerHeight
+     }
+-
+-    //Draw grid lines
+-    for(var j=0; j<2; ++j) {
+-      var u = (i + 1 + j) % 3
+-      var v = (i + 1 + (j^1)) % 3
+-      if(this.gridEnable[u]) {
+-        this._lines.drawGrid(u, v, this.bounds, x, this.gridColor[u], this.gridWidth[u]*this.pixelRatio)
+-      }
++    var nextWidth  = Math.ceil(width  * scene.pixelRatio)|0
++    var nextHeight = Math.ceil(height * scene.pixelRatio)|0
++    if(nextWidth !== canvas.width || nextHeight !== canvas.height) {
++      canvas.width   = nextWidth
++      canvas.height  = nextHeight
++      var style = canvas.style
++      style.position = style.position || 'absolute'
++      style.left     = '0px'
++      style.top      = '0px'
++      style.width    = width  + 'px'
++      style.height   = height + 'px'
++      dirty = true
+     }
++  }
++  if(scene.autoResize) {
++    resizeListener()
++  }
++  window.addEventListener('resize', resizeListener)
+ 
+-    //Draw zero lines (need to do this AFTER all grid lines are drawn)
+-    for(var j=0; j<2; ++j) {
+-      var u = (i + 1 + j) % 3
+-      var v = (i + 1 + (j^1)) % 3
+-      if(this.zeroEnable[v]) {
+-        //Check if zero line in bounds
+-        if(bounds[0][v] <= 0 && bounds[1][v] >= 0) {
+-          this._lines.drawZero(u, v, this.bounds, x, this.zeroLineColor[v], this.zeroLineWidth[v]*this.pixelRatio)
++  function reallocPickIds() {
++    var numObjs = objects.length
++    var numPick = pickBuffers.length
++    for(var i=0; i<numPick; ++i) {
++      pickBufferCount[i] = 0
++    }
++    obj_loop:
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
++      var pickCount = obj.pickSlots
++      if(!pickCount) {
++        pickBufferIds[i] = -1
++        continue
++      }
++      for(var j=0; j<numPick; ++j) {
++        if(pickBufferCount[j] + pickCount < 255) {
++          pickBufferIds[i] = j
++          obj.setPickBase(pickBufferCount[j]+1)
++          pickBufferCount[j] += pickCount
++          continue obj_loop
+         }
+       }
++      //Create new pick buffer
++      var nbuffer = createSelect(gl, viewShape)
++      pickBufferIds[i] = numPick
++      pickBuffers.push(nbuffer)
++      pickBufferCount.push(pickCount)
++      obj.setPickBase(1)
++      numPick += 1
++    }
++    while(numPick > 0 && pickBufferCount[numPick-1] === 0) {
++      pickBufferCount.pop()
++      pickBuffers.pop().dispose()
+     }
+   }
+ 
+-  //Then draw axis lines and tick marks
+-  for(var i=0; i<3; ++i) {
++  scene.update = function(options) {
++    if(stopped) {
++      return
++    }
++    options = options || {}
++    dirty = true
++    pickDirty = true
++  }
+ 
+-    //Draw axis lines
+-    if(this.lineEnable[i]) {
+-      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].primalOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
++  scene.add = function(obj) {
++    if(stopped) {
++      return
+     }
+-    if(this.lineMirror[i]) {
+-      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].mirrorOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
++    obj.axes = axes
++    objects.push(obj)
++    pickBufferIds.push(-1)
++    dirty = true
++    pickDirty = true
++    reallocPickIds()
++  }
++
++  scene.remove = function(obj) {
++    if(stopped) {
++      return
++    }
++    var idx = objects.indexOf(obj)
++    if(idx < 0) {
++      return
+     }
++    objects.splice(idx, 1)
++    pickBufferIds.pop()
++    dirty = true
++    pickDirty = true
++    reallocPickIds()
++  }
+ 
+-    //Compute minor axes
+-    var primalMinor = copyVec3(PRIMAL_MINOR, lineOffset[i].primalMinor)
+-    var mirrorMinor = copyVec3(MIRROR_MINOR, lineOffset[i].mirrorMinor)
+-    var tickLength  = this.lineTickLength
+-    var op = 0
+-    for(var j=0; j<3; ++j) {
+-      var scaleFactor = pixelScaleF / model[5*j]
+-      primalMinor[j] *= tickLength[j] * scaleFactor
+-      mirrorMinor[j] *= tickLength[j] * scaleFactor
++  scene.dispose = function() {
++    if(stopped) {
++      return
+     }
+ 
+-    //Draw axis line ticks
+-    if(this.lineTickEnable[i]) {
+-      this._lines.drawAxisTicks(i, lineOffset[i].primalOffset, primalMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
++    stopped = true
++
++    window.removeEventListener('resize', resizeListener)
++    canvas.removeEventListener('webglcontextlost', checkContextLoss)
++    scene.mouseListener.enabled = false
++
++    if(scene.contextLost) {
++      return
+     }
+-    if(this.lineTickMirror[i]) {
+-      this._lines.drawAxisTicks(i, lineOffset[i].mirrorOffset, mirrorMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
++
++    //Destroy objects
++    axes.dispose()
++    spikes.dispose()
++    for(var i=0; i<objects.length; ++i) {
++      objects[i].dispose()
++    }
++
++    //Clean up buffers
++    accumBuffer.dispose()
++    for(var i=0; i<pickBuffers.length; ++i) {
++      pickBuffers[i].dispose()
+     }
++
++    //Clean up shaders
++    accumShader.dispose()
++
++    //Release all references
++    gl = null
++    axes = null
++    spikes = null
++    objects = []
+   }
+ 
+-  //Draw text sprites
+-  this._text.bind(
+-    model,
+-    view,
+-    projection,
+-    this.pixelRatio)
++  //Update mouse position
++  var mouseRotating = false
+ 
+-  for(var i=0; i<3; ++i) {
++  var prevButtons = 0
+ 
+-    var minor      = lineOffset[i].primalMinor
+-    var offset     = copyVec3(PRIMAL_OFFSET, lineOffset[i].primalOffset)
++  scene.mouseListener = mouseChange(canvas, function(buttons, x, y) {
++    if(stopped) {
++      return
++    }
+ 
+-    for(var j=0; j<3; ++j) {
+-      if(this.lineTickEnable[i]) {
+-        offset[j] += pixelScaleF * minor[j] * Math.max(this.lineTickLength[j], 0)  / model[5*j]
++    var numPick = pickBuffers.length
++    var numObjs = objects.length
++    var prevObj = selection.object
++
++    selection.distance = Infinity
++    selection.mouse[0] = x
++    selection.mouse[1] = y
++    selection.object = null
++    selection.screen = null
++    selection.dataCoordinate = selection.dataPosition = null
++
++    var change = false
++
++    if(buttons && prevButtons) {
++      mouseRotating = true
++    } else {
++      if(mouseRotating) {
++        pickDirty = true
+       }
+-    }
++      mouseRotating = false
+ 
+-    //Draw tick text
+-    if(this.tickEnable[i]) {
++      for(var i=0; i<numPick; ++i) {
++        var result = pickBuffers[i].query(x, pickShape[1] - y - 1, scene.pickRadius)
++        if(result) {
++          if(result.distance > selection.distance) {
++            continue
++          }
++          for(var j=0; j<numObjs; ++j) {
++            var obj = objects[j]
++            if(pickBufferIds[j] !== i) {
++              continue
++            }
++            var objPick = obj.pick(result)
++            if(objPick) {
++              selection.buttons        = buttons
++              selection.screen         = result.coord
++              selection.distance       = result.distance
++              selection.object         = obj
++              selection.index          = objPick.distance
++              selection.dataPosition   = objPick.position
++              selection.dataCoordinate = objPick.dataCoordinate
++              selection.data           = objPick
++              change = true
++            }
++          }
++        }
++      }
++    }
+ 
+-      //Add tick padding
+-      for(var j=0; j<3; ++j) {
+-        offset[j] += pixelScaleF * minor[j] * this.tickPad[j] / model[5*j]
++    if(prevObj && prevObj !== selection.object) {
++      if(prevObj.highlight) {
++        prevObj.highlight(null)
+       }
++      dirty = true
++    }
++    if(selection.object) {
++      if(selection.object.highlight) {
++        selection.object.highlight(selection.data)
++      }
++      dirty = true
++    }
+ 
+-      //Draw axis
+-      this._text.drawTicks(
+-        i,
+-        this.tickSize[i],
+-        this.tickAngle[i],
+-        offset,
+-        this.tickColor[i])
++    change = change || (selection.object !== prevObj)
++    if(change && scene.onselect) {
++      scene.onselect(selection)
+     }
+ 
+-    //Draw labels
+-    if(this.labelEnable[i]) {
++    if((buttons & 1) && !(prevButtons & 1) && scene.onclick) {
++      scene.onclick(selection)
++    }
++    prevButtons = buttons
++  })
+ 
+-      //Add label padding
+-      for(var j=0; j<3; ++j) {
+-        offset[j] += pixelScaleF * minor[j] * this.labelPad[j] / model[5*j]
++  function checkContextLoss() {
++    if(scene.contextLost) {
++      return true
++    }
++    if(gl.isContextLost()) {
++      scene.contextLost = true
++      scene.mouseListener.enabled = false
++      scene.selection.object = null
++      if(scene.oncontextloss) {
++        scene.oncontextloss()
+       }
+-      offset[i] += 0.5 * (bounds[0][i] + bounds[1][i])
+-
+-      //Draw axis
+-      this._text.drawLabel(
+-        i,
+-        this.labelSize[i],
+-        this.labelAngle[i],
+-        offset,
+-        this.labelColor[i])
+     }
+   }
+-}
+ 
+-proto.dispose = function() {
+-  this._text.dispose()
+-  this._lines.dispose()
+-  this._background.dispose()
+-  this._lines = null
+-  this._text = null
+-  this._background = null
+-  this.gl = null
+-}
++  canvas.addEventListener('webglcontextlost', checkContextLoss)
+ 
+-function createAxes(gl, options) {
+-  var axes = new Axes(gl)
+-  axes.update(options)
+-  return axes
+-}
++  //Render the scene for mouse picking
++  function renderPick() {
++    if(checkContextLoss()) {
++      return
++    }
+ 
+-},{"./lib/background.js":147,"./lib/cube.js":148,"./lib/lines.js":149,"./lib/text.js":151,"./lib/ticks.js":152}],147:[function(require,module,exports){
+-'use strict'
++    gl.colorMask(true, true, true, true)
++    gl.depthMask(true)
++    gl.disable(gl.BLEND)
++    gl.enable(gl.DEPTH_TEST)
+ 
+-module.exports = createBackgroundCube
++    var numObjs = objects.length
++    var numPick = pickBuffers.length
++    for(var j=0; j<numPick; ++j) {
++      var buf = pickBuffers[j]
++      buf.shape = pickShape
++      buf.begin()
++      for(var i=0; i<numObjs; ++i) {
++        if(pickBufferIds[i] !== j) {
++          continue
++        }
++        var obj = objects[i]
++        if(obj.drawPick) {
++          obj.pixelRatio = 1
++          obj.drawPick(cameraParams)
++        }
++      }
++      buf.end()
++    }
++  }
+ 
+-var createBuffer = require('gl-buffer')
+-var createVAO    = require('gl-vao')
+-var createShader = require('./shaders').bg
++  var nBounds = [
++    [ Infinity, Infinity, Infinity],
++    [-Infinity,-Infinity,-Infinity]]
+ 
+-function BackgroundCube(gl, buffer, vao, shader) {
+-  this.gl = gl
+-  this.buffer = buffer
+-  this.vao = vao
+-  this.shader = shader
+-}
++  var prevBounds = [nBounds[0].slice(), nBounds[1].slice()]
+ 
+-var proto = BackgroundCube.prototype
++  function redraw() {
++    if(checkContextLoss()) {
++      return
++    }
+ 
+-proto.draw = function(model, view, projection, bounds, enable, colors) {
+-  var needsBG = false
+-  for(var i=0; i<3; ++i) {
+-    needsBG = needsBG || enable[i]
+-  }
+-  if(!needsBG) {
+-    return
+-  }
++    resizeListener()
+ 
+-  var gl = this.gl
++    //Tick camera
++    var cameraMoved = scene.camera.tick()
++    cameraParams.view = scene.camera.matrix
++    dirty     = dirty || cameraMoved
++    pickDirty = pickDirty || cameraMoved
+ 
+-  gl.enable(gl.POLYGON_OFFSET_FILL)
+-  gl.polygonOffset(1, 2)
++      //Set pixel ratio
++    axes.pixelRatio   = scene.pixelRatio
++    spikes.pixelRatio = scene.pixelRatio
+ 
+-  this.shader.bind()
+-  this.shader.uniforms = {
+-    model: model,
+-    view: view,
+-    projection: projection,
+-    bounds: bounds,
+-    enable: enable,
+-    colors: colors
+-  }
+-  this.vao.bind()
+-  this.vao.draw(this.gl.TRIANGLES, 36)
++    //Check if any objects changed, recalculate bounds
++    var numObjs = objects.length
++    var lo = nBounds[0]
++    var hi = nBounds[1]
++    lo[0] = lo[1] = lo[2] =  Infinity
++    hi[0] = hi[1] = hi[2] = -Infinity
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
+ 
+-  gl.disable(gl.POLYGON_OFFSET_FILL)
+-}
++      //Set the axes properties for each object
++      obj.pixelRatio = scene.pixelRatio
++      obj.axes = scene.axes
+ 
+-proto.dispose = function() {
+-  this.vao.dispose()
+-  this.buffer.dispose()
+-  this.shader.dispose()
+-}
++      dirty = dirty || !!obj.dirty
++      pickDirty = pickDirty || !!obj.dirty
++      var obb = obj.bounds
++      if(obb) {
++        var olo = obb[0]
++        var ohi = obb[1]
++        for(var j=0; j<3; ++j) {
++          lo[j] = Math.min(lo[j], olo[j])
++          hi[j] = Math.max(hi[j], ohi[j])
++        }
++      }
++    }
+ 
+-function createBackgroundCube(gl) {
+-  //Create cube vertices
+-  var vertices = []
+-  var indices  = []
+-  var ptr = 0
+-  for(var d=0; d<3; ++d) {
+-    var u = (d+1) % 3
+-    var v = (d+2) % 3
+-    var x = [0,0,0]
+-    var c = [0,0,0]
+-    for(var s=-1; s<=1; s+=2) {
+-      indices.push(ptr,   ptr+2, ptr+1,
+-                   ptr+1, ptr+2, ptr+3)
+-      x[d] = s
+-      c[d] = s
+-      for(var i=-1; i<=1; i+=2) {
+-        x[u] = i
+-        for(var j=-1; j<=1; j+=2) {
+-          x[v] = j
+-          vertices.push(x[0], x[1], x[2],
+-                        c[0], c[1], c[2])
+-          ptr += 1
++    //Recalculate bounds
++    var bounds = scene.bounds
++    if(scene.autoBounds) {
++      for(var j=0; j<3; ++j) {
++        if(hi[j] < lo[j]) {
++          lo[j] = -1
++          hi[j] = 1
++        } else {
++          if(lo[j] === hi[j]) {
++            lo[j] -= 1
++            hi[j] += 1
++          }
++          var padding = 0.05 * (hi[j] - lo[j])
++          lo[j] = lo[j] - padding
++          hi[j] = hi[j] + padding
+         }
++        bounds[0][j] = lo[j]
++        bounds[1][j] = hi[j]
+       }
+-      //Swap u and v
+-      var tt = u
+-      u = v
+-      v = tt
+     }
+-  }
+ 
+-  //Allocate buffer and vertex array
+-  var buffer = createBuffer(gl, new Float32Array(vertices))
+-  var elements = createBuffer(gl, new Uint16Array(indices), gl.ELEMENT_ARRAY_BUFFER)
+-  var vao = createVAO(gl, [
+-      {
+-        buffer: buffer,
+-        type: gl.FLOAT,
+-        size: 3,
+-        offset: 0,
+-        stride: 24
+-      },
+-      {
+-        buffer: buffer,
+-        type: gl.FLOAT,
+-        size: 3,
+-        offset: 12,
+-        stride: 24
++    var boundsChanged = false
++    for(var j=0; j<3; ++j) {
++        boundsChanged = boundsChanged ||
++            (prevBounds[0][j] !== bounds[0][j])  ||
++            (prevBounds[1][j] !== bounds[1][j])
++        prevBounds[0][j] = bounds[0][j]
++        prevBounds[1][j] = bounds[1][j]
++    }
++
++    if(boundsChanged) {
++      var tickSpacing = [0,0,0]
++      for(var i=0; i<3; ++i) {
++        tickSpacing[i] = roundUpPow10((bounds[1][i]-bounds[0][i]) / 10.0)
+       }
+-    ], elements)
++      if(axes.autoTicks) {
++        axes.update({
++          bounds: bounds,
++          tickSpacing: tickSpacing
++        })
++      } else {
++        axes.update({
++          bounds: bounds
++        })
++      }
++    }
+ 
+-  //Create shader object
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.normal.location = 1
++    //Recalculate bounds
++    pickDirty = pickDirty || boundsChanged
++    dirty = dirty || boundsChanged
+ 
+-  return new BackgroundCube(gl, buffer, vao, shader)
+-}
++    //Get scene
++    var width  = gl.drawingBufferWidth
++    var height = gl.drawingBufferHeight
++    viewShape[0] = width
++    viewShape[1] = height
++    pickShape[0] = Math.max(width/scene.pixelRatio, 1)|0
++    pickShape[1] = Math.max(height/scene.pixelRatio, 1)|0
+ 
+-},{"./shaders":150,"gl-buffer":105,"gl-vao":192}],148:[function(require,module,exports){
+-"use strict"
++    //Compute camera parameters
++    perspective(projection,
++      scene.fovy,
++      width/height,
++      scene.zNear,
++      scene.zFar)
+ 
+-module.exports = getCubeEdges
++    //Compute model matrix
++    for(var i=0; i<16; ++i) {
++      model[i] = 0
++    }
++    model[15] = 1
+ 
+-var bits      = require('bit-twiddle')
+-var multiply  = require('gl-mat4/multiply')
+-var invert    = require('gl-mat4/invert')
+-var splitPoly = require('split-polygon')
+-var orient    = require('robust-orientation')
++    var maxS = 0
++    for(var i=0; i<3; ++i) {
++      maxS = Math.max(maxS, bounds[1][i] - bounds[0][i])
++    }
+ 
+-var mvp        = new Array(16)
+-var imvp       = new Array(16)
+-var pCubeVerts = new Array(8)
+-var cubeVerts  = new Array(8)
+-var x          = new Array(3)
+-var zero3      = [0,0,0]
++    for(var i=0; i<3; ++i) {
++      if(scene.autoScale) {
++        model[5*i] = scene.aspect[i] / (bounds[1][i] - bounds[0][i])
++      } else {
++        model[5*i] = 1  / maxS
++      }
++      if(scene.autoCenter) {
++        model[12+i] = -model[5*i] * 0.5 * (bounds[0][i] + bounds[1][i])
++      }
++    }
+ 
+-;(function() {
+-  for(var i=0; i<8; ++i) {
+-    pCubeVerts[i] =[1,1,1,1]
+-    cubeVerts[i] = [1,1,1]
+-  }
+-})()
++    //Apply axes/clip bounds
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
+ 
++      //Set axes bounds
++      obj.axesBounds = bounds
+ 
+-function transformHg(result, x, mat) {
+-  for(var i=0; i<4; ++i) {
+-    result[i] = mat[12+i]
+-    for(var j=0; j<3; ++j) {
+-      result[i] += x[j]*mat[4*j+i]
++      //Set clip bounds
++      if(scene.clipToBounds) {
++        obj.clipBounds = bounds
++      }
+     }
+-  }
+-}
+ 
+-var FRUSTUM_PLANES = [
+-  [ 0, 0, 1, 0, 0],
+-  [ 0, 0,-1, 1, 0],
+-  [ 0,-1, 0, 1, 0],
+-  [ 0, 1, 0, 1, 0],
+-  [-1, 0, 0, 1, 0],
+-  [ 1, 0, 0, 1, 0]
+-]
++    //Set spike parameters
++    if(selection.object) {
++      if(scene.snapToData) {
++        spikes.position = selection.dataCoordinate
++      } else {
++        spikes.position = selection.dataPosition
++      }
++      spikes.bounds = bounds
++    }
+ 
+-function polygonArea(p) {
+-  for(var i=0; i<FRUSTUM_PLANES.length; ++i) {
+-    p = splitPoly.positive(p, FRUSTUM_PLANES[i])
+-    if(p.length < 3) {
+-      return 0
++    //If state changed, then redraw pick buffers
++    if(pickDirty) {
++      pickDirty = false
++      renderPick()
+     }
+-  }
+ 
+-  var base = p[0]
+-  var ax = base[0] / base[3]
+-  var ay = base[1] / base[3]
+-  var area = 0.0
+-  for(var i=1; i+1<p.length; ++i) {
+-    var b = p[i]
+-    var c = p[i+1]
++    if(!dirty) {
++      return
++    }
+ 
+-    var bx = b[0]/b[3]
+-    var by = b[1]/b[3]
+-    var cx = c[0]/c[3]
+-    var cy = c[1]/c[3]
++    //Recalculate pixel data
++    scene.axesPixels = axesRanges(scene.axes, cameraParams, width, height)
+ 
+-    var ux = bx - ax
+-    var uy = by - ay
++    //Call render callback
++    if(scene.onrender) {
++      scene.onrender()
++    }
+ 
+-    var vx = cx - ax
+-    var vy = cy - ay
++    //Read value
++    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++    gl.viewport(0, 0, width, height)
+ 
+-    area += Math.abs(ux * vy - uy * vx)
+-  }
++    //General strategy: 3 steps
++    //  1. render non-transparent objects
++    //  2. accumulate transparent objects into separate fbo
++    //  3. composite final scene
+ 
+-  return area
+-}
++    //Clear FBO
++    var clearColor = scene.clearColor
++    gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3])
++    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
++    gl.depthMask(true)
++    gl.colorMask(true, true, true, true)
++    gl.enable(gl.DEPTH_TEST)
++    gl.depthFunc(gl.LEQUAL)
++    gl.disable(gl.BLEND)
++    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
+ 
+-var CUBE_EDGES = [1,1,1]
+-var CUBE_AXIS  = [0,0,0]
+-var CUBE_RESULT = {
+-  cubeEdges: CUBE_EDGES,
+-  axis: CUBE_AXIS
+-}
++    //Render opaque pass
++    var hasTransparent = false
++    if(axes.enable) {
++      hasTransparent = hasTransparent || axes.isTransparent()
++      axes.draw(cameraParams)
++    }
++    spikes.axes = axes
++    if(selection.object) {
++      spikes.draw(cameraParams)
++    }
+ 
+-function getCubeEdges(model, view, projection, bounds) {
++    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
+ 
+-  //Concatenate matrices
+-  multiply(mvp, view, model)
+-  multiply(mvp, projection, mvp)
+-  
+-  //First project cube vertices
+-  var ptr = 0
+-  for(var i=0; i<2; ++i) {
+-    x[2] = bounds[i][2]
+-    for(var j=0; j<2; ++j) {
+-      x[1] = bounds[j][1]
+-      for(var k=0; k<2; ++k) {
+-        x[0] = bounds[k][0]
+-        transformHg(pCubeVerts[ptr], x, mvp)
+-        ptr += 1
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
++      obj.axes = axes
++      obj.pixelRatio = scene.pixelRatio
++      if(obj.isOpaque && obj.isOpaque()) {
++        obj.draw(cameraParams)
++      }
++      if(obj.isTransparent && obj.isTransparent()) {
++        hasTransparent = true
+       }
+     }
+-  }
+ 
+-  //Classify camera against cube faces
+-  var closest = -1
++    if(hasTransparent) {
++      //Render transparent pass
++      accumBuffer.shape = viewShape
++      accumBuffer.bind()
++      gl.clear(gl.DEPTH_BUFFER_BIT)
++      gl.colorMask(false, false, false, false)
++      gl.depthMask(true)
++      gl.depthFunc(gl.LESS)
+ 
+-  for(var i=0; i<8; ++i) {
+-    var w = pCubeVerts[i][3]
+-    for(var l=0; l<3; ++l) {
+-      cubeVerts[i][l] = pCubeVerts[i][l] / w
+-    }
+-    if(w < 0) {
+-      if(closest < 0) {
+-        closest = i
+-      } else if(cubeVerts[i][2] < cubeVerts[closest][2]) {
+-        closest = i
++      //Render forward facing objects
++      if(axes.enable && axes.isTransparent()) {
++        axes.drawTransparent(cameraParams)
+       }
+-    }    
+-  }
+-
+-  if(closest < 0) {
+-    closest = 0
+-    for(var d=0; d<3; ++d) {
+-      var u = (d+2) % 3
+-      var v = (d+1) % 3
+-      var o0 = -1
+-      var o1 = -1
+-      for(var s=0; s<2; ++s) {
+-        var f0 = (s<<d)
+-        var f1 = f0 + (s << u) + ((1-s) << v)
+-        var f2 = f0 + ((1-s) << u) + (s << v)
+-        if(orient(cubeVerts[f0], cubeVerts[f1], cubeVerts[f2], zero3) < 0) {
+-          continue
+-        }
+-        if(s) {
+-          o0 = 1
+-        } else {
+-          o1 = 1
++      for(var i=0; i<numObjs; ++i) {
++        var obj = objects[i]
++        if(obj.isOpaque && obj.isOpaque()) {
++          obj.draw(cameraParams)
+         }
+       }
+-      if(o0 < 0 || o1 < 0) {
+-        if(o1 > o0) {
+-          closest |= 1<<d
+-        }
+-        continue
+-      } 
+-      for(var s=0; s<2; ++s) {
+-        var f0 = (s<<d)
+-        var f1 = f0 + (s << u) + ((1-s) << v)
+-        var f2 = f0 + ((1-s) << u) + (s << v)    
+-        var o = polygonArea([
+-            pCubeVerts[f0], 
+-            pCubeVerts[f1], 
+-            pCubeVerts[f2], 
+-            pCubeVerts[f0+(1<<u)+(1<<v)]])
+-        if(s) {
+-          o0 = o
+-        } else {
+-          o1 = o
+-        }
++
++      //Render transparent pass
++      gl.enable(gl.BLEND)
++      gl.blendEquation(gl.FUNC_ADD)
++      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
++      gl.colorMask(true, true, true, true)
++      gl.depthMask(false)
++      gl.clearColor(0,0,0,0)
++      gl.clear(gl.COLOR_BUFFER_BIT)
++
++      if(axes.isTransparent()) {
++        axes.drawTransparent(cameraParams)
+       }
+-      if(o1 > o0) {
+-        closest |= 1<<d
+-        continue
++
++      for(var i=0; i<numObjs; ++i) {
++        var obj = objects[i]
++        if(obj.isTransparent && obj.isTransparent()) {
++          obj.drawTransparent(cameraParams)
++        }
+       }
+-    }
+-  }
+ 
+-  var farthest = 7^closest
++      //Unbind framebuffer
++      gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++
++      //Draw composite pass
++      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
++      gl.disable(gl.DEPTH_TEST)
++      accumShader.bind()
++      accumBuffer.color[0].bind(0)
++      accumShader.uniforms.accumBuffer = 0
++      drawTriangle(gl)
+ 
+-  //Find lowest vertex which is not closest closest
+-  var bottom = -1
+-  for(var i=0; i<8; ++i) {
+-    if(i === closest || i === farthest) {
+-      continue
++      //Turn off blending
++      gl.disable(gl.BLEND)
+     }
+-    if(bottom < 0) {
+-      bottom = i
+-    } else if(cubeVerts[bottom][1] > cubeVerts[i][1]) {
+-      bottom = i
++
++    //Clear dirty flags
++    dirty = false
++    for(var i=0; i<numObjs; ++i) {
++      objects[i].dirty = false
+     }
+   }
+ 
+-  //Find left/right neighbors of bottom vertex
+-  var left = -1
+-  for(var i=0; i<3; ++i) {
+-    var idx = bottom ^ (1<<i)
+-    if(idx === closest || idx === farthest) {
+-      continue
+-    }
+-    if(left < 0) {
+-      left = idx
+-    }
+-    var v = cubeVerts[idx]
+-    if(v[0] < cubeVerts[left][0]) {
+-      left = idx
++
++  //Draw the whole scene
++  function render() {
++    if(stopped || scene.contextLost) {
++      return
+     }
++    requestAnimationFrame(render)
++    redraw()
+   }
+-  var right = -1
+-  for(var i=0; i<3; ++i) {
+-    var idx = bottom ^ (1<<i)
+-    if(idx === closest || idx === farthest || idx === left) {
+-      continue
+-    }
+-    if(right < 0) {
+-      right = idx
+-    }
+-    var v = cubeVerts[idx]
+-    if(v[0] > cubeVerts[right][0]) {
+-      right = idx
++  render()
++
++  //Force redraw of whole scene
++  scene.redraw = function() {
++    if(stopped) {
++      return
+     }
++    dirty = true
++    redraw()
+   }
+ 
+-  //Determine edge axis coordinates
+-  var cubeEdges = CUBE_EDGES
+-  cubeEdges[0] = cubeEdges[1] = cubeEdges[2] = 0
+-  cubeEdges[bits.log2(left^bottom)] = bottom&left
+-  cubeEdges[bits.log2(bottom^right)] = bottom&right
+-  var top = right ^ 7
+-  if(top === closest || top === farthest) {
+-    top = left ^ 7
+-    cubeEdges[bits.log2(right^top)] = top&right
+-  } else {
+-    cubeEdges[bits.log2(left^top)] = top&left
+-  }
++  return scene
++}
+ 
+-  //Determine visible faces
+-  var axis = CUBE_AXIS
+-  var cutCorner = closest
+-  for(var d=0; d<3; ++d) {
+-    if(cutCorner & (1<<d)) {
+-      axis[d] = -1
+-    } else {
+-      axis[d] = 1
+-    }
++},{"./lib/shader":126,"3d-view-controls":8,"a-big-triangle":10,"gl-axes3d":86,"gl-axes3d/properties":93,"gl-fbo":99,"gl-mat4/perspective":114,"gl-select-static":132,"gl-spikes3d":141,"mouse-change":177}],128:[function(require,module,exports){
++module.exports = slerp
++
++/**
++ * Performs a spherical linear interpolation between two quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {quat} out
++ */
++function slerp (out, a, b, t) {
++  // benchmarks:
++  //    http://jsperf.com/quaternion-slerp-implementations
++
++  var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++    bx = b[0], by = b[1], bz = b[2], bw = b[3]
++
++  var omega, cosom, sinom, scale0, scale1
++
++  // calc cosine
++  cosom = ax * bx + ay * by + az * bz + aw * bw
++  // adjust signs (if necessary)
++  if (cosom < 0.0) {
++    cosom = -cosom
++    bx = -bx
++    by = -by
++    bz = -bz
++    bw = -bw
++  }
++  // calculate coefficients
++  if ((1.0 - cosom) > 0.000001) {
++    // standard case (slerp)
++    omega = Math.acos(cosom)
++    sinom = Math.sin(omega)
++    scale0 = Math.sin((1.0 - t) * omega) / sinom
++    scale1 = Math.sin(t * omega) / sinom
++  } else {
++    // "from" and "to" quaternions are very close
++    //  ... so we can do a linear interpolation
++    scale0 = 1.0 - t
++    scale1 = t
+   }
++  // calculate final values
++  out[0] = scale0 * ax + scale1 * bx
++  out[1] = scale0 * ay + scale1 * by
++  out[2] = scale0 * az + scale1 * bz
++  out[3] = scale0 * aw + scale1 * bw
+ 
+-  //Return result
+-  return CUBE_RESULT
++  return out
+ }
+-},{"bit-twiddle":38,"gl-mat4/invert":120,"gl-mat4/multiply":122,"robust-orientation":225,"split-polygon":154}],149:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports    = createLines
++},{}],129:[function(require,module,exports){
++"use strict"
+ 
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var createShader  = require('./shaders').line
++var vectorizeText = require("vectorize-text")
+ 
+-var MAJOR_AXIS = [0,0,0]
+-var MINOR_AXIS = [0,0,0]
+-var SCREEN_AXIS = [0,0,0]
+-var OFFSET_VEC = [0,0,0]
+-var SHAPE = [1,1]
++module.exports = getGlyph
+ 
+-function zeroVec(a) {
+-  a[0] = a[1] = a[2] = 0
+-  return a
+-}
++var GLYPH_CACHE = {}
+ 
+-function copyVec(a,b) {
+-  a[0] = b[0]
+-  a[1] = b[1]
+-  a[2] = b[2]
+-  return a
+-}
++function getGlyph(symbol, font) {
++  var fontCache = GLYPH_CACHE[font]
++  if(!fontCache) {
++    fontCache = GLYPH_CACHE[font] = {}
++  }
++  if(symbol in fontCache) {
++    return fontCache[symbol]
++  }
+ 
+-function Lines(gl, vertBuffer, vao, shader, tickCount, tickOffset, gridCount, gridOffset) {
+-  this.gl         = gl
+-  this.vertBuffer = vertBuffer
+-  this.vao        = vao
+-  this.shader     = shader
+-  this.tickCount  = tickCount
+-  this.tickOffset = tickOffset
+-  this.gridCount  = gridCount
+-  this.gridOffset = gridOffset
++  //Get line and triangle meshes for glyph
++  var lineSymbol = vectorizeText(symbol, {
++      textAlign: "center",
++      textBaseline: "middle",
++      lineHeight: 1.0,
++      font: font
++    }) 
++  var triSymbol = vectorizeText(symbol, {
++      triangles: true,
++      textAlign: "center",
++      textBaseline: "middle",
++      lineHeight: 1.0,
++      font: font
++    })
++
++  //Calculate bounding box
++  var bounds = [[Infinity,Infinity], [-Infinity,-Infinity]]
++  for(var i=0; i<lineSymbol.positions.length; ++i) {
++    var p = lineSymbol.positions[i]
++    for(var j=0; j<2; ++j) {
++      bounds[0][j] = Math.min(bounds[0][j], p[j])
++      bounds[1][j] = Math.max(bounds[1][j], p[j])
++    }
++  }
++
++  //Save cached symbol
++  return fontCache[symbol] = [triSymbol, lineSymbol, bounds]
+ }
++},{"vectorize-text":249}],130:[function(require,module,exports){
++var createShaderWrapper = require('gl-shader')
+ 
+-var proto = Lines.prototype
+ 
+-proto.bind = function(model, view, projection) {
+-  this.shader.bind()
+-  this.shader.uniforms.model = model
+-  this.shader.uniforms.view = view
+-  this.shader.uniforms.projection = projection
++var perspectiveVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\n\nuniform vec4 highlightId;\nuniform float highlightScale;\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   || \n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = 1.0;\n    if(distance(highlightId, id) < 0.0001) {\n      scale = highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1);\n    vec4 viewPosition = view * worldPosition;\n    viewPosition = viewPosition / viewPosition.w;\n    vec4 clipPosition = projection * (viewPosition + scale * vec4(glyph.x, -glyph.y, 0, 0));\n    \n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
++var orthographicVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float highlightScale, pixelRatio;\nuniform vec4 highlightId;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = pixelRatio;\n    if(distance(highlightId.bgr, id.bgr) < 0.001) {\n      scale *= highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1.0);\n    vec4 viewPosition = view * worldPosition;\n    vec4 clipPosition = projection * viewPosition;\n    clipPosition /= clipPosition.w;\n    \n    gl_Position = clipPosition + vec4(screenSize * scale * vec2(glyph.x, -glyph.y), 0.0, 0.0);\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
++var projectionVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform float highlightScale;\nuniform vec4 highlightId;\nuniform vec3 axes[2];\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float scale, pixelRatio;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   ||\n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float lscale = pixelRatio * scale;\n    if(distance(highlightId, id) < 0.0001) {\n      lscale *= highlightScale;\n    }\n\n    vec4 clipCenter   = projection * view * model * vec4(position, 1);\n    vec3 dataPosition = position + 0.5*lscale*(axes[0] * glyph.x + axes[1] * glyph.y) * clipCenter.w * screenSize.y;\n    vec4 clipPosition = projection * view * model * vec4(dataPosition, 1);\n\n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = dataPosition;\n  }\n}\n"
++var drawFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float opacity;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   ||\n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = interpColor * opacity;\n  }\n}\n"
++var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float pickGroup;\n\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   || \n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = vec4(pickGroup, pickId.bgr);\n  }\n}"
+ 
+-  SHAPE[0] = this.gl.drawingBufferWidth
+-  SHAPE[1] = this.gl.drawingBufferHeight
++var ATTRIBUTES = [
++  {name: 'position', type: 'vec3'},
++  {name: 'color', type: 'vec4'},
++  {name: 'glyph', type: 'vec2'},
++  {name: 'id', type: 'vec4'}
++]
+ 
+-  this.shader.uniforms.screenShape = SHAPE
+-  this.vao.bind()
++var perspective = {
++    vertex: perspectiveVertSrc,
++    fragment: drawFragSrc,
++    attributes: ATTRIBUTES
++  },
++  ortho = {
++    vertex: orthographicVertSrc,
++    fragment: drawFragSrc,
++    attributes: ATTRIBUTES
++  },
++  project = {
++    vertex: projectionVertSrc,
++    fragment: drawFragSrc,
++    attributes: ATTRIBUTES
++  },
++  pickPerspective = {
++    vertex: perspectiveVertSrc,
++    fragment: pickFragSrc,
++    attributes: ATTRIBUTES
++  },
++  pickOrtho = {
++    vertex: orthographicVertSrc,
++    fragment: pickFragSrc,
++    attributes: ATTRIBUTES
++  },
++  pickProject = {
++    vertex: projectionVertSrc,
++    fragment: pickFragSrc,
++    attributes: ATTRIBUTES
++  }
++
++function createShader(gl, src) {
++  var shader = createShaderWrapper(gl, src)
++  var attr = shader.attributes
++  attr.position.location = 0
++  attr.color.location = 1
++  attr.glyph.location = 2
++  attr.id.location = 3
++  return shader
+ }
+ 
+-proto.drawAxisLine = function(j, bounds, offset, color, lineWidth) {
+-  var minorAxis = zeroVec(MINOR_AXIS)
+-  this.shader.uniforms.majorAxis = MINOR_AXIS
++exports.createPerspective = function(gl) {
++  return createShader(gl, perspective)
++}
++exports.createOrtho = function(gl) {
++  return createShader(gl, ortho)
++}
++exports.createProject = function(gl) {
++  return createShader(gl, project)
++}
++exports.createPickPerspective = function(gl) {
++  return createShader(gl, pickPerspective)
++}
++exports.createPickOrtho = function(gl) {
++  return createShader(gl, pickOrtho)
++}
++exports.createPickProject = function(gl) {
++  return createShader(gl, pickProject)
++}
+ 
+-  minorAxis[j] = bounds[1][j] - bounds[0][j]
+-  this.shader.uniforms.minorAxis = minorAxis
++},{"gl-shader":133}],131:[function(require,module,exports){
++'use strict'
+ 
+-  var noffset = copyVec(OFFSET_VEC, offset)
+-  noffset[j] += bounds[0][j]
+-  this.shader.uniforms.offset = noffset
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var pool          = require('typedarray-pool')
++var mat4mult      = require('gl-mat4/multiply')
++var shaders       = require('./lib/shaders')
++var getGlyph      = require('./lib/glyphs')
+ 
+-  this.shader.uniforms.lineWidth = lineWidth
++var IDENTITY = [1,0,0,0,
++                0,1,0,0,
++                0,0,1,0,
++                0,0,0,1]
+ 
+-  this.shader.uniforms.color = color
++module.exports = createPointCloud
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[(j+2)%3] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.vao.draw(this.gl.TRIANGLES, 6)
++function transformMat4(x, m) {
++  var x0 = x[0]
++  var x1 = x[1]
++  var x2 = x[2]
++  var x3 = x[3]
++  x[0] = m[0] * x0 + m[4] * x1 + m[8]  * x2 + m[12] * x3
++  x[1] = m[1] * x0 + m[5] * x1 + m[9]  * x2 + m[13] * x3
++  x[2] = m[2] * x0 + m[6] * x1 + m[10] * x2 + m[14] * x3
++  x[3] = m[3] * x0 + m[7] * x1 + m[11] * x2 + m[15] * x3
++  return x
++}
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[(j+1)%3] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.vao.draw(this.gl.TRIANGLES, 6)
++function project(p, v, m, x) {
++  transformMat4(x, x, m)
++  transformMat4(x, x, v)
++  return transformMat4(x, x, p)
+ }
+ 
+-proto.drawAxisTicks = function(j, offset, minorAxis, color, lineWidth) {
+-  if(!this.tickCount[j]) {
+-    return
++function clampVec(v) {
++  var result = new Array(3)
++  for(var i=0; i<3; ++i) {
++    result[i] = Math.min(Math.max(v[i], -1e8), 1e8)
+   }
++  return result
++}
+ 
+-  var majorAxis = zeroVec(MAJOR_AXIS)
+-  majorAxis[j]  = 1
+-  this.shader.uniforms.majorAxis = majorAxis
+-  this.shader.uniforms.offset    = offset
+-  this.shader.uniforms.minorAxis = minorAxis
+-  this.shader.uniforms.color     = color
+-  this.shader.uniforms.lineWidth = lineWidth
+-
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[j] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.vao.draw(this.gl.TRIANGLES, this.tickCount[j], this.tickOffset[j])
++function ScatterPlotPickResult(index, position) {
++  this.index = index
++  this.dataCoordinate = this.position = position
+ }
+ 
++function PointCloud(
++  gl,
++  shader,
++  orthoShader,
++  projectShader,
++  pointBuffer,
++  colorBuffer,
++  glyphBuffer,
++  idBuffer,
++  vao,
++  pickPerspectiveShader,
++  pickOrthoShader,
++  pickProjectShader) {
+ 
+-proto.drawGrid = function(i, j, bounds, offset, color, lineWidth) {
+-  if(!this.gridCount[i]) {
+-    return
+-  }
++  this.gl              = gl
+ 
+-  var minorAxis = zeroVec(MINOR_AXIS)
+-  minorAxis[j]  = bounds[1][j] - bounds[0][j]
+-  this.shader.uniforms.minorAxis = minorAxis
++  this.pixelRatio      = 1
+ 
+-  var noffset = copyVec(OFFSET_VEC, offset)
+-  noffset[j] += bounds[0][j]
+-  this.shader.uniforms.offset = noffset
++  this.shader          = shader
++  this.orthoShader     = orthoShader
++  this.projectShader   = projectShader
+ 
+-  var majorAxis = zeroVec(MAJOR_AXIS)
+-  majorAxis[i]  = 1
+-  this.shader.uniforms.majorAxis = majorAxis
++  this.pointBuffer     = pointBuffer
++  this.colorBuffer     = colorBuffer
++  this.glyphBuffer     = glyphBuffer
++  this.idBuffer        = idBuffer
++  this.vao             = vao
++  this.vertexCount     = 0
++  this.lineVertexCount = 0
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[i] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.shader.uniforms.lineWidth = lineWidth
++  this.opacity         = 1.0
+ 
+-  this.shader.uniforms.color = color
+-  this.vao.draw(this.gl.TRIANGLES, this.gridCount[i], this.gridOffset[i])
+-}
++  this.lineWidth       = 0
++  this.projectScale    = [2.0/3.0, 2.0/3.0, 2.0/3.0]
++  this.projectOpacity  = [1,1,1]
+ 
+-proto.drawZero = function(j, i, bounds, offset, color, lineWidth) {
+-  var minorAxis = zeroVec(MINOR_AXIS)
+-  this.shader.uniforms.majorAxis = minorAxis
++  this.pickId                = 0
++  this.pickPerspectiveShader = pickPerspectiveShader
++  this.pickOrthoShader       = pickOrthoShader
++  this.pickProjectShader     = pickProjectShader
++  this.points                = []
+ 
+-  minorAxis[j] = bounds[1][j] - bounds[0][j]
+-  this.shader.uniforms.minorAxis = minorAxis
++  this._selectResult = new ScatterPlotPickResult(0, [0,0,0])
+ 
+-  var noffset = copyVec(OFFSET_VEC, offset)
+-  noffset[j] += bounds[0][j]
+-  this.shader.uniforms.offset = noffset
++  this.useOrtho = true
++  this.bounds   = [[ Infinity,Infinity,Infinity],
++                   [-Infinity,-Infinity,-Infinity]]
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[i] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.shader.uniforms.lineWidth = lineWidth
++  //Axes projections
++  this.axesProject = [ true, true, true ]
++  this.axesBounds = [[-Infinity,-Infinity,-Infinity],
++                     [ Infinity, Infinity, Infinity]]
+ 
+-  this.shader.uniforms.color = color
+-  this.vao.draw(this.gl.TRIANGLES, 6)
+-}
++  this.highlightId    = [1,1,1,1]
++  this.highlightScale = 2
+ 
+-proto.dispose = function() {
+-  this.vao.dispose()
+-  this.vertBuffer.dispose()
+-  this.shader.dispose()
++  this.clipBounds = [[-Infinity,-Infinity,-Infinity],
++                     [ Infinity, Infinity, Infinity]]
++
++  this.dirty = true
+ }
+ 
+-function createLines(gl, bounds, ticks) {
+-  var vertices    = []
+-  var tickOffset  = [0,0,0]
+-  var tickCount   = [0,0,0]
++var proto = PointCloud.prototype
+ 
+-  //Create grid lines for each axis/direction
+-  var gridOffset = [0,0,0]
+-  var gridCount  = [0,0,0]
++proto.pickSlots = 1
+ 
+-  //Add zero line
+-  vertices.push(
+-    0,0,1,   0,1,1,   0,0,-1,
+-    0,0,-1,  0,1,1,   0,1,-1)
++proto.setPickBase = function(pickBase) {
++  this.pickId = pickBase
++}
+ 
++proto.isTransparent = function() {
++  if(this.opacity < 1)  {
++    return true
++  }
+   for(var i=0; i<3; ++i) {
+-    //Axis tick marks
+-    var start = ((vertices.length / 3)|0)
+-    for(var j=0; j<ticks[i].length; ++j) {
+-      var x = +ticks[i][j].x
+-      vertices.push(
+-        x,0,1,   x,1,1,   x,0,-1,
+-        x,0,-1,  x,1,1,   x,1,-1)
+-    }
+-    var end = ((vertices.length / 3)|0)
+-    tickOffset[i] = start
+-    tickCount[i]  = end - start
+-
+-    //Grid lines
+-    var start = ((vertices.length / 3)|0)
+-    for(var k=0; k<ticks[i].length; ++k) {
+-      var x = +ticks[i][k].x
+-      vertices.push(
+-        x,0,1,   x,1,1,   x,0,-1,
+-        x,0,-1,  x,1,1,   x,1,-1)
++    if(this.axesProject[i] && this.projectOpacity[i] < 1) {
++      return true
+     }
+-    var end = ((vertices.length / 3)|0)
+-    gridOffset[i] = start
+-    gridCount[i]  = end - start
+   }
++  return false
++}
+ 
+-  //Create cube VAO
+-  var vertBuf = createBuffer(gl, new Float32Array(vertices))
+-  var vao = createVAO(gl, [
+-    { "buffer": vertBuf,
+-      "type": gl.FLOAT,
+-      "size": 3,
+-      "stride": 0,
+-      "offset": 0
++proto.isOpaque = function() {
++  if(this.opacity >= 1)  {
++    return true
++  }
++  for(var i=0; i<3; ++i) {
++    if(this.axesProject[i] && this.projectOpacity[i] >= 1) {
++      return true
+     }
+-  ])
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  return new Lines(gl, vertBuf, vao, shader, tickCount, tickOffset, gridCount, gridOffset)
++  }
++  return false
+ }
+ 
+-},{"./shaders":150,"gl-buffer":105,"gl-vao":192}],150:[function(require,module,exports){
+-'use strict'
+-
+-
+-var createShader = require('gl-shader')
++var VIEW_SHAPE = [0,0]
++var U_VEC = [0,0,0]
++var V_VEC = [0,0,0]
++var MU_VEC = [0,0,0,1]
++var MV_VEC = [0,0,0,1]
++var SCRATCH_MATRIX = IDENTITY.slice()
++var SCRATCH_VEC = [0,0,0]
++var CLIP_BOUNDS = [[0,0,0], [0,0,0]]
+ 
+-var lineVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, majorAxis, minorAxis, screenAxis;\nuniform float lineWidth;\nuniform vec2 screenShape;\n\nvec3 project(vec3 p) {\n  vec4 pp = projection * view * model * vec4(p, 1.0);\n  return pp.xyz / max(pp.w, 0.0001);\n}\n\nvoid main() {\n  vec3 major = position.x * majorAxis;\n  vec3 minor = position.y * minorAxis;\n\n  vec3 vPosition = major + minor + offset;\n  vec3 pPosition = project(vPosition);\n  vec3 offset = project(vPosition + screenAxis * position.z);\n\n  vec2 screen = normalize((offset - pPosition).xy * screenShape) / screenShape;\n\n  gl_Position = vec4(pPosition + vec3(0.5 * screen * lineWidth, 0), 1.0);\n}\n"
+-var lineFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
+-exports.line = function(gl) {
+-  return createShader(gl, lineVert, lineFrag, null, [
+-    {name: 'position', type: 'vec3'}
+-  ])
++function zeroVec(a) {
++  a[0] = a[1] = a[2] = 0
++  return a
+ }
+ 
+-var textVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, axis;\nuniform float scale, angle, pixelScale;\nuniform vec2 resolution;\n\nvoid main() {  \n  //Compute plane offset\n  vec2 planeCoord = position.xy * pixelScale;\n  mat2 planeXform = scale * mat2(cos(angle), sin(angle),\n                                -sin(angle), cos(angle));\n  vec2 viewOffset = 2.0 * planeXform * planeCoord / resolution;\n\n  //Compute world offset\n  float axisDistance = position.z;\n  vec3 dataPosition = axisDistance * axis + offset;\n  vec4 worldPosition = model * vec4(dataPosition, 1);\n  \n  //Compute clip position\n  vec4 viewPosition = view * worldPosition;\n  vec4 clipPosition = projection * viewPosition;\n  clipPosition /= clipPosition.w;\n\n  //Apply text offset in clip coordinates\n  clipPosition += vec4(viewOffset, 0, 0);\n\n  //Done\n  gl_Position = clipPosition;\n}"
+-var textFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
+-exports.text = function(gl) {
+-  return createShader(gl, textVert, textFrag, null, [
+-    {name: 'position', type: 'vec3'}
+-  ])
++function augment(hg, af) {
++  hg[0] = af[0]
++  hg[1] = af[1]
++  hg[2] = af[2]
++  hg[3] = 1
++  return hg
+ }
+ 
+-var bgVert = "#define GLSLIFY 1\nattribute vec3 position;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection;\nuniform vec3 enable;\nuniform vec3 bounds[2];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  if(dot(normal, enable) > 0.0) {\n    vec3 nPosition = mix(bounds[0], bounds[1], 0.5 * (position + 1.0));\n    gl_Position = projection * view * model * vec4(nPosition, 1.0);\n  } else {\n    gl_Position = vec4(0,0,0,0);\n  }\n  colorChannel = abs(normal);\n}"
+-var bgFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 colors[3];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  gl_FragColor = colorChannel.x * colors[0] + \n                 colorChannel.y * colors[1] +\n                 colorChannel.z * colors[2];\n}"
+-exports.bg = function(gl) {
+-  return createShader(gl, bgVert, bgFrag, null, [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'}
+-  ])
++function setComponent(out, v, i, x) {
++  out[0] = v[0]
++  out[1] = v[1]
++  out[2] = v[2]
++  out[i] = x
++  return out
+ }
+ 
+-},{"gl-shader":164}],151:[function(require,module,exports){
+-(function (process){
+-"use strict"
++function getClipBounds(bounds) {
++  var result = CLIP_BOUNDS
++  for(var i=0; i<2; ++i) {
++    for(var j=0; j<3; ++j) {
++      result[i][j] = Math.max(Math.min(bounds[i][j], 1e8), -1e8)
++    }
++  }
++  return result
++}
+ 
+-module.exports = createTextSprites
++function drawProject(shader, points, camera, transparent, forceDraw) {
++  var axesProject = points.axesProject
+ 
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var vectorizeText = require('vectorize-text')
+-var createShader  = require('./shaders').text
++  var gl         = points.gl
++  var uniforms   = shader.uniforms
++  var model      = camera.model      || IDENTITY
++  var view       = camera.view       || IDENTITY
++  var projection = camera.projection || IDENTITY
++  var bounds     = points.axesBounds
++  var clipBounds = getClipBounds(points.clipBounds)
+ 
+-var globals = window || process.global || {}
+-var __TEXT_CACHE  = globals.__TEXT_CACHE || {}
+-globals.__TEXT_CACHE = {}
++  var cubeAxis
++  if(points.axes) {
++    cubeAxis = points.axes.lastCubeProps.axis
++  } else {
++    cubeAxis = [1,1,1]
++  }
+ 
+-//Vertex buffer format for text is:
+-//
+-/// [x,y,z] = Spatial coordinate
+-//
++  VIEW_SHAPE[0] = 2.0/gl.drawingBufferWidth
++  VIEW_SHAPE[1] = 2.0/gl.drawingBufferHeight
+ 
+-var VERTEX_SIZE = 3
+-var VERTEX_STRIDE = VERTEX_SIZE * 4
++  shader.bind()
++  uniforms.view           = view
++  uniforms.projection     = projection
++  uniforms.screenSize     = VIEW_SHAPE
++  uniforms.highlightId    = points.highlightId
++  uniforms.highlightScale = points.highlightScale
++  uniforms.clipBounds     = clipBounds
++  uniforms.pickGroup      = points.pickId / 255.0
++  uniforms.pixelRatio     = points.pixelRatio
+ 
+-function TextSprites(
+-  gl,
+-  shader,
+-  buffer,
+-  vao) {
+-  this.gl           = gl
+-  this.shader       = shader
+-  this.buffer       = buffer
+-  this.vao          = vao
+-  this.tickOffset   =
+-  this.tickCount    =
+-  this.labelOffset  =
+-  this.labelCount   = null
+-}
++  for(var i=0; i<3; ++i) {
++    if(!axesProject[i]) {
++      continue
++    }
++    if((points.projectOpacity[i] < 1) !== transparent) {
++      continue
++    }
+ 
+-var proto = TextSprites.prototype
++    uniforms.scale          = points.projectScale[i]
++    uniforms.opacity        = points.projectOpacity[i]
+ 
+-//Bind textures for rendering
+-var SHAPE = [0,0]
+-proto.bind = function(model, view, projection, pixelScale) {
+-  this.vao.bind()
+-  this.shader.bind()
+-  var uniforms = this.shader.uniforms
+-  uniforms.model = model
+-  uniforms.view = view
+-  uniforms.projection = projection
+-  uniforms.pixelScale = pixelScale
+-  SHAPE[0] = this.gl.drawingBufferWidth
+-  SHAPE[1] = this.gl.drawingBufferHeight
+-  this.shader.uniforms.resolution = SHAPE
+-}
++    //Project model matrix
++    var pmodel = SCRATCH_MATRIX
++    for(var j=0; j<16; ++j) {
++      pmodel[j] = 0
++    }
++    for(var j=0; j<4; ++j) {
++      pmodel[5*j] = 1
++    }
++    pmodel[5*i] = 0
++    if(cubeAxis[i] < 0) {
++      pmodel[12+i] = bounds[0][i]
++    } else {
++      pmodel[12+i] = bounds[1][i]
++    }
++    mat4mult(pmodel, model, pmodel)
++    uniforms.model = pmodel
+ 
+-proto.update = function(bounds, labels, labelFont, ticks, tickFont) {
+-  var gl = this.gl
+-  var data = []
++    //Compute initial axes
++    var u = (i+1)%3
++    var v = (i+2)%3
++    var du = zeroVec(U_VEC)
++    var dv = zeroVec(V_VEC)
++    du[u] = 1
++    dv[v] = 1
+ 
+-  function addItem(t, text, font, size) {
+-    var fontcache = __TEXT_CACHE[font]
+-    if(!fontcache) {
+-      fontcache = __TEXT_CACHE[font] = {}
++    //Align orientation relative to viewer
++    var mdu = project(projection, view, model, augment(MU_VEC, du))
++    var mdv = project(projection, view, model, augment(MV_VEC, dv))
++    if(Math.abs(mdu[1]) > Math.abs(mdv[1])) {
++      var tmp = mdu
++      mdu = mdv
++      mdv = tmp
++      tmp = du
++      du = dv
++      dv = tmp
++      var t = u
++      u = v
++      v = t
+     }
+-    var mesh = fontcache[text]
+-    if(!mesh) {
+-      mesh = fontcache[text] = tryVectorizeText(text, {
+-        triangles: true,
+-        font: font,
+-        textAlign: 'center',
+-        textBaseline: 'middle'
+-      })
++    if(mdu[0] < 0) {
++      du[u] = -1
+     }
+-    var scale = (size || 12) / 12
+-    var positions = mesh.positions
+-    var cells = mesh.cells
+-    var lo = [ Infinity, Infinity]
+-    var hi = [-Infinity,-Infinity]
+-    for(var i=0, nc=cells.length; i<nc; ++i) {
+-      var c = cells[i]
+-      for(var j=2; j>=0; --j) {
+-        var p = positions[c[j]]
+-        data.push(scale*p[0], -scale*p[1], t)
+-      }
++    if(mdv[1] > 0) {
++      dv[v] = -1
+     }
+-  }
++    var su = 0.0
++    var sv = 0.0
++    for(var j=0; j<4; ++j) {
++      su += Math.pow(model[4*u+j], 2)
++      sv += Math.pow(model[4*v+j], 2)
++    }
++    du[u] /= Math.sqrt(su)
++    dv[v] /= Math.sqrt(sv)
++    uniforms.axes[0] = du
++    uniforms.axes[1] = dv
+ 
+-  //Generate sprites for all 3 axes, store data in texture atlases
+-  var tickOffset  = [0,0,0]
+-  var tickCount   = [0,0,0]
+-  var labelOffset = [0,0,0]
+-  var labelCount  = [0,0,0]
+-  for(var d=0; d<3; ++d) {
++    //Update fragment clip bounds
++    uniforms.fragClipBounds[0] = setComponent(SCRATCH_VEC, clipBounds[0], i, -1e8)
++    uniforms.fragClipBounds[1] = setComponent(SCRATCH_VEC, clipBounds[1], i, 1e8)
+ 
+-    //Generate label
+-    labelOffset[d] = (data.length/VERTEX_SIZE)|0
+-    addItem(0.5*(bounds[0][d]+bounds[1][d]), labels[d], labelFont)
+-    labelCount[d] = ((data.length/VERTEX_SIZE)|0) - labelOffset[d]
++    //Draw interior
++    points.vao.draw(gl.TRIANGLES, points.vertexCount)
+ 
+-    //Generate sprites for tick marks
+-    tickOffset[d] = (data.length/VERTEX_SIZE)|0
+-    for(var i=0; i<ticks[d].length; ++i) {
+-      if(!ticks[d][i].text) {
+-        continue
+-      }
+-      addItem(
+-        ticks[d][i].x,
+-        ticks[d][i].text,
+-        ticks[d][i].font || tickFont,
+-        ticks[d][i].fontSize || 12)
++    //Draw edges
++    if(points.lineWidth > 0) {
++      gl.lineWidth(points.lineWidth)
++      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
+     }
+-    tickCount[d] = ((data.length/VERTEX_SIZE)|0) - tickOffset[d]
+   }
+-
+-  this.buffer.update(data)
+-  this.tickOffset = tickOffset
+-  this.tickCount = tickCount
+-  this.labelOffset = labelOffset
+-  this.labelCount = labelCount
+ }
+ 
+-//Draws the tick marks for an axis
+-var AXIS = [0,0,0]
+-proto.drawTicks = function(d, scale, angle, offset, color) {
+-  if(!this.tickCount[d]) {
+-    return
+-  }
+-
+-  var v = AXIS
+-  v[0] = v[1] = v[2] = 0
+-  v[d] = 1
+-  this.shader.uniforms.axis = v
+-  this.shader.uniforms.color = color
+-  this.shader.uniforms.angle = angle
+-  this.shader.uniforms.scale = scale
+-  this.shader.uniforms.offset = offset
+-  this.vao.draw(this.gl.TRIANGLES, this.tickCount[d], this.tickOffset[d])
+-}
+ 
+-//Draws the text label for an axis
+-var ZERO = [0,0,0]
+-proto.drawLabel = function(d, scale, angle, offset, color) {
+-  if(!this.labelCount[d]) {
+-    return
+-  }
+-  this.shader.uniforms.axis = ZERO
+-  this.shader.uniforms.color = color
+-  this.shader.uniforms.angle = angle
+-  this.shader.uniforms.scale = scale
+-  this.shader.uniforms.offset = offset
+-  this.vao.draw(this.gl.TRIANGLES, this.labelCount[d], this.labelOffset[d])
+-}
++var NEG_INFINITY3 = [-1e8, -1e8, -1e8]
++var POS_INFINITY3 = [1e8, 1e8, 1e8]
++var CLIP_GROUP    = [NEG_INFINITY3, POS_INFINITY3]
+ 
+-//Releases all resources attached to this object
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.vao.dispose()
+-  this.buffer.dispose()
+-}
++function drawFull(shader, pshader, points, camera, transparent, forceDraw) {
++  var gl = points.gl
+ 
+-function tryVectorizeText(text, options) {
+-  try {
+-    return vectorizeText(text, options)
+-  } catch(e) {
+-    console.warn('error vectorizing text:', e)
+-    return {
+-      cells: [],
+-      positions: []
+-    }
+-  }
+-}
++  points.vao.bind()
+ 
+-function createTextSprites(
+-    gl,
+-    bounds,
+-    labels,
+-    labelFont,
+-    ticks,
+-    tickFont) {
++  if(transparent === (points.opacity < 1) || forceDraw) {
++    shader.bind()
++    var uniforms = shader.uniforms
+ 
+-  var buffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    { "buffer": buffer,
+-      "size": 3
+-    }
+-  ])
++    uniforms.model      = camera.model      || IDENTITY
++    uniforms.view       = camera.view       || IDENTITY
++    uniforms.projection = camera.projection || IDENTITY
+ 
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
++    VIEW_SHAPE[0]       = 2.0/gl.drawingBufferWidth
++    VIEW_SHAPE[1]       = 2.0/gl.drawingBufferHeight
++    uniforms.screenSize = VIEW_SHAPE
+ 
+-  var result = new TextSprites(
+-    gl,
+-    shader,
+-    buffer,
+-    vao)
++    uniforms.highlightId    = points.highlightId
++    uniforms.highlightScale = points.highlightScale
+ 
+-  result.update(bounds, labels, labelFont, ticks, tickFont)
++    uniforms.fragClipBounds = CLIP_GROUP
++    uniforms.clipBounds     = points.axes.bounds
+ 
+-  return result
+-}
++    uniforms.opacity    = points.opacity
++    uniforms.pickGroup  = points.pickId / 255.0
+ 
+-}).call(this,require('_process'))
+-},{"./shaders":150,"_process":44,"gl-buffer":105,"gl-vao":192,"vectorize-text":244}],152:[function(require,module,exports){
+-'use strict'
++    uniforms.pixelRatio = points.pixelRatio
+ 
+-exports.create   = defaultTicks
+-exports.equal    = ticksEqual
++    //Draw interior
++    points.vao.draw(gl.TRIANGLES, points.vertexCount)
+ 
+-function prettyPrint(spacing, i) {
+-  var stepStr = spacing + ""
+-  var u = stepStr.indexOf(".")
+-  var sigFigs = 0
+-  if(u >= 0) {
+-    sigFigs = stepStr.length - u - 1
+-  }
+-  var shift = Math.pow(10, sigFigs)
+-  var x = Math.round(spacing * i * shift)
+-  var xstr = x + ""
+-  if(xstr.indexOf("e") >= 0) {
+-    return xstr
+-  }
+-  var xi = x / shift, xf = x % shift
+-  if(x < 0) {
+-    xi = -Math.ceil(xi)|0
+-    xf = (-xf)|0
+-  } else {
+-    xi = Math.floor(xi)|0
+-    xf = xf|0
+-  }
+-  var xis = "" + xi 
+-  if(x < 0) {
+-    xis = "-" + xis
+-  }
+-  if(sigFigs) {
+-    var xs = "" + xf
+-    while(xs.length < sigFigs) {
+-      xs = "0" + xs
++    //Draw edges
++    if(points.lineWidth > 0) {
++      gl.lineWidth(points.lineWidth)
++      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
+     }
+-    return xis + "." + xs
+-  } else {
+-    return xis
+   }
+-}
+ 
+-function defaultTicks(bounds, tickSpacing) {
+-  var array = []
+-  for(var d=0; d<3; ++d) {
+-    var ticks = []
+-    var m = 0.5*(bounds[0][d]+bounds[1][d])
+-    for(var t=0; t*tickSpacing[d]<=bounds[1][d]; ++t) {
+-      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
+-    }
+-    for(var t=-1; t*tickSpacing[d]>=bounds[0][d]; --t) {
+-      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
+-    }
+-    array.push(ticks)
+-  }
+-  return array
+-}
++  drawProject(pshader, points, camera, transparent, forceDraw)
+ 
+-function ticksEqual(ticksA, ticksB) {
+-  for(var i=0; i<3; ++i) {
+-    if(ticksA[i].length !== ticksB[i].length) {
+-      return false
+-    }
+-    for(var j=0; j<ticksA[i].length; ++j) {
+-      var a = ticksA[i][j]
+-      var b = ticksB[i][j]
+-      if(a.x !== b.x || a.text !== b.text) {
+-        return false
+-      }
+-    }
+-  }
+-  return true
++  points.vao.unbind()
+ }
+-},{}],153:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = extractPlanes
+ 
+-function extractPlanes(M, zNear, zFar) {
+-  var z  = zNear || 0.0
+-  var zf = zFar || 1.0
+-  return [
+-    [ M[12] + M[0], M[13] + M[1], M[14] + M[2], M[15] + M[3] ],
+-    [ M[12] - M[0], M[13] - M[1], M[14] - M[2], M[15] - M[3] ],
+-    [ M[12] + M[4], M[13] + M[5], M[14] + M[6], M[15] + M[7] ],
+-    [ M[12] - M[4], M[13] - M[5], M[14] - M[6], M[15] - M[7] ],
+-    [ z*M[12] + M[8], z*M[13] + M[9], z*M[14] + M[10], z*M[15] + M[11] ],
+-    [ zf*M[12] - M[8], zf*M[13] - M[9], zf*M[14] - M[10], zf*M[15] - M[11] ]
+-  ]
++proto.draw = function(camera) {
++  var shader = this.useOrtho ? this.orthoShader : this.shader
++  drawFull(shader, this.projectShader, this, camera, false, false)
+ }
+-},{}],154:[function(require,module,exports){
+-"use strict"
+-
+-var robustDot = require("robust-dot-product")
+-var robustSum = require("robust-sum")
+ 
+-module.exports = splitPolygon
+-module.exports.positive = positive
+-module.exports.negative = negative
++proto.drawTransparent = function(camera) {
++  var shader = this.useOrtho ? this.orthoShader : this.shader
++  drawFull(shader, this.projectShader, this, camera, true, false)
++}
+ 
+-function planeT(p, plane) {
+-  var r = robustSum(robustDot(p, plane), [plane[plane.length-1]])
+-  return r[r.length-1]
++proto.drawPick = function(camera) {
++  var shader = this.useOrtho ? this.pickOrthoShader : this.pickPerspectiveShader
++  drawFull(shader, this.pickProjectShader, this, camera, false, true)
+ }
+ 
++proto.pick = function(selected) {
++  if(!selected) {
++    return null
++  }
++  if(selected.id !== this.pickId) {
++    return null
++  }
++  var x = selected.value[2] + (selected.value[1]<<8) + (selected.value[0]<<16)
++  if(x >= this.pointCount || x < 0) {
++    return null
++  }
+ 
+-//Can't do this exactly and emit a floating point result
+-function lerpW(a, wa, b, wb) {
+-  var d = wb - wa
+-  var t = -wa / d
+-  if(t < 0.0) {
+-    t = 0.0
+-  } else if(t > 1.0) {
+-    t = 1.0
++  //Unpack result
++  var coord = this.points[x]
++  var result = this._selectResult
++  result.index = x
++  for(var i=0; i<3; ++i) {
++    result.position[i] = result.dataCoordinate[i] = coord[i]
+   }
+-  var ti = 1.0 - t
+-  var n = a.length
+-  var r = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    r[i] = t * a[i] + ti * b[i]
++  return result
++}
++
++proto.highlight = function(selection) {
++  if(!selection) {
++    this.highlightId = [1,1,1,1]
++  } else {
++    var pointId = selection.index
++    var a0 =  pointId     &0xff
++    var a1 = (pointId>>8) &0xff
++    var a2 = (pointId>>16)&0xff
++    this.highlightId = [a0/255.0, a1/255.0, a2/255.0, 0]
+   }
+-  return r
+ }
+ 
+-function splitPolygon(points, plane) {
+-  var pos = []
+-  var neg = []
+-  var a = planeT(points[points.length-1], plane)
+-  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
+-    t = points[i]
+-    var b = planeT(t, plane)
+-    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
+-      var p = lerpW(s, b, t, a)
+-      pos.push(p)
+-      neg.push(p.slice())
+-    }
+-    if(b < 0) {
+-      neg.push(t.slice())
+-    } else if(b > 0) {
+-      pos.push(t.slice())
++proto.update = function(options) {
++
++  options = options || {}
++
++  if('perspective' in options) {
++    this.useOrtho = !options.perspective
++  }
++  if('orthographic' in options) {
++    this.useOrtho = !!options.orthographic
++  }
++  if('lineWidth' in options) {
++    this.lineWidth = options.lineWidth
++  }
++  if('project' in options) {
++    if(Array.isArray(options.project)) {
++      this.axesProject = options.project
+     } else {
+-      pos.push(t.slice())
+-      neg.push(t.slice())
++      var v = !!options.project
++      this.axesProject = [v,v,v]
+     }
+-    a = b
+   }
+-  return { positive: pos, negative: neg }
+-}
+-
+-function positive(points, plane) {
+-  var pos = []
+-  var a = planeT(points[points.length-1], plane)
+-  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
+-    t = points[i]
+-    var b = planeT(t, plane)
+-    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
+-      pos.push(lerpW(s, b, t, a))
+-    }
+-    if(b >= 0) {
+-      pos.push(t.slice())
++  if('projectScale' in options) {
++    if(Array.isArray(options.projectScale)) {
++      this.projectScale = options.projectScale.slice()
++    } else {
++      var s = +options.projectScale
++      this.projectScale = [s,s,s]
+     }
+-    a = b
+   }
+-  return pos
+-}
+-
+-function negative(points, plane) {
+-  var neg = []
+-  var a = planeT(points[points.length-1], plane)
+-  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
+-    t = points[i]
+-    var b = planeT(t, plane)
+-    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
+-      neg.push(lerpW(s, b, t, a))
+-    }
+-    if(b <= 0) {
+-      neg.push(t.slice())
++  if('projectOpacity' in options) {
++    if(Array.isArray(options.projectOpacity)) {
++      this.projectOpacity = options.projectOpacity.slice()
++    } else {
++      var s = +options.projectOpacity
++      this.projectOpacity = [s,s,s]
+     }
+-    a = b
+   }
+-  return neg
+-}
+-},{"robust-dot-product":155,"robust-sum":228}],155:[function(require,module,exports){
+-"use strict"
+-
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
++  if('opacity' in options) {
++    this.opacity = options.opacity
++  }
+ 
+-module.exports = robustDotProduct
++  //Set dirty flag
++  this.dirty = true
+ 
+-function robustDotProduct(a, b) {
+-  var r = twoProduct(a[0], b[0])
+-  for(var i=1; i<a.length; ++i) {
+-    r = robustSum(r, twoProduct(a[i], b[i]))
++  //Create new buffers
++  var points = options.position
++  if(!points) {
++    return
+   }
+-  return r
+-}
+-},{"robust-sum":228,"two-product":240}],156:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = axesProperties
++  //Text font
++  var font      = options.font      || 'normal'
++  var alignment = options.alignment || [0,0]
+ 
+-var getPlanes   = require("extract-frustum-planes")
+-var splitPoly   = require("split-polygon")
+-var cubeParams  = require("./lib/cube.js")
+-var m4mul       = require("gl-mat4/multiply")
+-var m4transpose = require("gl-mat4/transpose")
+-var v4transformMat4 = require("gl-vec4/transformMat4")
++  //Bounds
++  var lowerBound = [ Infinity, Infinity, Infinity]
++  var upperBound = [-Infinity,-Infinity,-Infinity]
+ 
+-var identity    = new Float32Array([
+-    1, 0, 0, 0,
+-    0, 1, 0, 0,
+-    0, 0, 1, 0,
+-    0, 0, 0, 1
+-  ])
++  //Unpack options
++  var glyphs     = options.glyph
++  var colors     = options.color
++  var sizes      = options.size
++  var angles     = options.angle
++  var lineColors = options.lineColor
+ 
+-var mvp         = new Float32Array(16)
++  //Picking geometry
++  var pickCounter = 0
+ 
+-function AxesRange3D(lo, hi, pixelsPerDataUnit) {
+-  this.lo = lo
+-  this.hi = hi
+-  this.pixelsPerDataUnit = pixelsPerDataUnit
+-}
++  //First do pass to compute buffer sizes
++  var triVertexCount     = 0
++  var lineVertexCount = 0
+ 
+-var SCRATCH_P = [0,0,0,1]
+-var SCRATCH_Q = [0,0,0,1]
++  //Count number of points and buffer size
++  var numPoints   = points.length
+ 
+-function gradient(result, M, v, width, height) {
+-  for(var i=0; i<3; ++i) {
+-    var p = SCRATCH_P
+-    var q = SCRATCH_Q
++count_loop:
++  for(var i=0; i<numPoints; ++i) {
++    var x = points[i]
+     for(var j=0; j<3; ++j) {
+-      q[j] = p[j] = v[j]
++      if(isNaN(x[j]) || !isFinite(x[j])) {
++        continue count_loop
++      }
+     }
+-    q[3] = p[3] = 1
+ 
+-    q[i] += 1
+-    v4transformMat4(q, q, M)
+-    if(q[3] < 0) {
+-      result[i] = Infinity
++    var glyphData
++    if(Array.isArray(glyphs)) {
++      glyphData = getGlyph(glyphs[i], font)
++    } else if(glyphs) {
++      glyphData = getGlyph(glyphs, font)
++    } else {
++      glyphData = getGlyph('●', font)
+     }
++    var glyphMesh   = glyphData[0]
++    var glyphLines  = glyphData[1]
++    var glyphBounds = glyphData[2]
+ 
+-    p[i] -= 1
+-    v4transformMat4(p, p, M)
+-    if(p[3] < 0) {
+-      result[i] = Infinity
+-    }
++    triVertexCount  += glyphMesh.cells.length * 3
++    lineVertexCount += glyphLines.edges.length * 2
++  }
+ 
+-    var dx = (p[0]/p[3] - q[0]/q[3]) * width
+-    var dy = (p[1]/p[3] - q[1]/q[3]) * height
+ 
+-    result[i] = 0.25 * Math.sqrt(dx*dx + dy*dy)
+-  }
+-  return result
+-}
++  //Preallocate data
++  var vertexCount   = triVertexCount + lineVertexCount
++  var positionArray = pool.mallocFloat(3*vertexCount)
++  var colorArray    = pool.mallocFloat(4*vertexCount)
++  var glyphArray    = pool.mallocFloat(2*vertexCount)
++  var idArray       = pool.mallocUint32(vertexCount)
+ 
+-var RANGES = [
+-  new AxesRange3D(Infinity, -Infinity, Infinity),
+-  new AxesRange3D(Infinity, -Infinity, Infinity),
+-  new AxesRange3D(Infinity, -Infinity, Infinity)
+-]
++  var textOffset = [0,alignment[1]]
+ 
+-var SCRATCH_X = [0,0,0]
++  var triOffset  = 0
++  var lineOffset = triVertexCount
++  var color      = [0,0,0,1]
++  var lineColor  = [0,0,0,1]
+ 
+-function axesProperties(axes, camera, width, height, params) {
+-  var model       = camera.model || identity
+-  var view        = camera.view || identity
+-  var projection  = camera.projection || identity
+-  var bounds      = axes.bounds
+-  var params      = params || cubeParams(model, view, projection, bounds)
+-  var axis        = params.axis
+-  var edges       = params.edges
++  var isColorArray      = Array.isArray(colors)     && Array.isArray(colors[0])
++  var isLineColorArray  = Array.isArray(lineColors) && Array.isArray(lineColors[0])
+ 
+-  m4mul(mvp, view, model)
+-  m4mul(mvp, projection, mvp)
++fill_loop:
++  for(var i=0; i<numPoints; ++i) {
++    var x = points[i]
++    for(var j=0; j<3; ++j) {
++      if(isNaN(x[j]) || !isFinite(x[j])) {
++        pickCounter += 1
++        continue fill_loop
++      }
+ 
+-  //Calculate the following properties for each axis:
+-  //
+-  // * lo - start of visible range for each axis in tick coordinates
+-  // * hi - end of visible range for each axis in tick coordinates
+-  // * ticksPerPixel - pixel density of tick marks for the axis
+-  //
+-  var ranges = RANGES
+-  for(var i=0; i<3; ++i) {
+-    ranges[i].lo = Infinity
+-    ranges[i].hi = -Infinity
+-    ranges[i].pixelsPerDataUnit = Infinity
+-  }
++      upperBound[j] = Math.max(upperBound[j], x[j])
++      lowerBound[j] = Math.min(lowerBound[j], x[j])
++    }
+ 
+-  //Compute frustum planes, intersect with box
+-  var frustum = getPlanes(m4transpose(mvp, mvp))
+-  m4transpose(mvp, mvp)
++    var glyphData
++    if(Array.isArray(glyphs)) {
++      glyphData = getGlyph(glyphs[i], font)
++    } else if(glyphs) {
++      glyphData = getGlyph(glyphs, font)
++    } else {
++      glyphData = getGlyph('●', font)
++    }
++    var glyphMesh   = glyphData[0]
++    var glyphLines  = glyphData[1]
++    var glyphBounds = glyphData[2]
+ 
+-  //Loop over vertices of viewable box
+-  for(var d=0; d<3; ++d) {
+-    var u = (d+1)%3
+-    var v = (d+2)%3
+-    var x = SCRATCH_X
+-i_loop:
+-    for(var i=0; i<2; ++i) {
+-      var poly = []
+ 
+-      if((axis[d] < 0) === !!i) {
+-        continue
++    //Get color
++    if(Array.isArray(colors)) {
++      var c
++      if(isColorArray) {
++        c = colors[i]
++      } else {
++        c = colors
++      }
++      if(c.length === 3) {
++        for(var j=0; j<3; ++j) {
++          color[j] = c[j]
++        }
++        color[3] = 1
++      } else if(c.length === 4) {
++        for(var j=0; j<4; ++j) {
++          color[j] = c[j]
++        }
+       }
++    } else {
++      color[0] = color[1] = color[2] = 0
++      color[3] = 1
++    }
+ 
+-      x[d] = bounds[i][d]
+-      for(var j=0; j<2; ++j) {
+-        x[u] = bounds[j^i][u]
+-        for(var k=0; k<2; ++k) {
+-          x[v] = bounds[k^j^i][v]
+-          poly.push(x.slice())
++    //Get lineColor
++    if(Array.isArray(lineColors)) {
++      var c
++      if(isLineColorArray) {
++        c = lineColors[i]
++      } else {
++        c = lineColors
++      }
++      if(c.length === 3) {
++        for(var j=0; j<3; ++j) {
++          lineColor[j] = c[j]
++        }
++        lineColor[j] = 1
++      } else if(c.length === 4) {
++        for(var j=0; j<4; ++j) {
++          lineColor[j] = c[j]
+         }
+       }
+-      for(var j=0; j<frustum.length; ++j) {
+-        if(poly.length === 0) {
+-          continue i_loop
++    } else {
++      lineColor[0] = lineColor[1] = lineColor[2] = 0
++      lineColor[3] = 1
++    }
++
++    var size = 0.5
++    if(Array.isArray(sizes)) {
++      size = +sizes[i]
++    } else if(sizes) {
++      size = +sizes
++    } else if(this.useOrtho) {
++      size = 12
++    }
++
++    var angle = 0
++    if(Array.isArray(angles)) {
++      angle = +angles[i]
++    } else if(angles) {
++      angle = +angles
++    }
++
++    //Loop through markers and append to buffers
++    var cos = Math.cos(angle)
++    var sin = Math.sin(angle)
++
++    var x = points[i]
++    for(var j=0; j<3; ++j) {
++      upperBound[j] = Math.max(upperBound[j], x[j])
++      lowerBound[j] = Math.min(lowerBound[j], x[j])
++    }
++
++    //Calculate text offset
++    if(alignment[0] < 0) {
++      textOffset[0] = alignment[0]  * (1+glyphBounds[1][0])
++    } else if(alignment[0] > 0) {
++      textOffset[0] = -alignment[0] * (1+glyphBounds[0][0])
++    }
++
++    //Write out inner marker
++    var cells = glyphMesh.cells
++    var verts = glyphMesh.positions
++
++    for(var j=0; j<cells.length; ++j) {
++      var cell = cells[j]
++      for(var k=0; k<3; ++k) {
++        for(var l=0; l<3; ++l) {
++          positionArray[3*triOffset+l] = x[l]
+         }
+-        poly = splitPoly.positive(poly, frustum[j])
++        for(var l=0; l<4; ++l) {
++          colorArray[4*triOffset+l] = color[l]
++        }
++        idArray[triOffset] = pickCounter
++        var p = verts[cell[k]]
++        glyphArray[2*triOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
++        glyphArray[2*triOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
++        triOffset += 1
+       }
++    }
+ 
+-      //Loop over vertices of polygon to find extremal points
+-      for(var j=0; j<poly.length; ++j) {
+-        var v = poly[j]
+-        var grad = gradient(SCRATCH_X, mvp, v, width, height)
+-        for(var k=0; k<3; ++k) {
+-          ranges[k].lo = Math.min(ranges[k].lo, v[k])
+-          ranges[k].hi = Math.max(ranges[k].hi, v[k])
+-          if(k !== d) {
+-            ranges[k].pixelsPerDataUnit = Math.min(ranges[k].pixelsPerDataUnit, Math.abs(grad[k]))
+-          }
++    var cells = glyphLines.edges
++    var verts = glyphLines.positions
++
++    for(var j=0; j<cells.length; ++j) {
++      var cell = cells[j]
++      for(var k=0; k<2; ++k) {
++        for(var l=0; l<3; ++l) {
++          positionArray[3*lineOffset+l] = x[l]
++        }
++        for(var l=0; l<4; ++l) {
++          colorArray[4*lineOffset+l] = lineColor[l]
+         }
++        idArray[lineOffset] = pickCounter
++        var p = verts[cell[k]]
++        glyphArray[2*lineOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
++        glyphArray[2*lineOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
++        lineOffset += 1
+       }
+     }
++
++    //Increment pickCounter
++    pickCounter += 1
+   }
+ 
+-  return ranges
+-}
+ 
+-},{"./lib/cube.js":148,"extract-frustum-planes":153,"gl-mat4/multiply":122,"gl-mat4/transpose":130,"gl-vec4/transformMat4":193,"split-polygon":154}],157:[function(require,module,exports){
+-'use strict'
++  //Update vertex counts
++  this.vertexCount      = triVertexCount
++  this.lineVertexCount  = lineVertexCount
+ 
++  //Update buffers
++  this.pointBuffer.update(positionArray)
++  this.colorBuffer.update(colorArray)
++  this.glyphBuffer.update(glyphArray)
++  this.idBuffer.update(new Uint32Array(idArray))
+ 
+-var createShader = require('gl-shader')
++  pool.free(positionArray)
++  pool.free(colorArray)
++  pool.free(glyphArray)
++  pool.free(idArray)
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, color;\nattribute float weight;\n\nuniform mat4 model, view, projection;\nuniform vec3 coordinates[3];\nuniform vec4 colors[3];\nuniform vec2 screenShape;\nuniform float lineWidth;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vertexPosition = mix(coordinates[0],\n    mix(coordinates[2], coordinates[1], 0.5 * (position + 1.0)), abs(position));\n\n  vec4 clipPos = projection * view * model * vec4(vertexPosition, 1.0);\n  vec2 clipOffset = (projection * view * model * vec4(color, 0.0)).xy;\n  vec2 delta = weight * clipOffset * screenShape;\n  vec2 lineOffset = normalize(vec2(delta.y, -delta.x)) / screenShape;\n\n  gl_Position   = vec4(clipPos.xy + clipPos.w * 0.5 * lineWidth * lineOffset, clipPos.z, clipPos.w);\n  fragColor     = color.x * colors[0] + color.y * colors[1] + color.z * colors[2];\n}\n"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragColor;\n\nvoid main() {\n  gl_FragColor = fragColor;\n}"
++  //Update bounds
++  this.bounds = [lowerBound, upperBound]
+ 
+-module.exports = function(gl) {
+-  return createShader(gl, vertSrc, fragSrc, null, [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'color', type: 'vec3'},
+-    {name: 'weight', type: 'float'}
+-  ])
++  //Save points
++  this.points = points
++
++  //Save number of points
++  this.pointCount = points.length
+ }
+ 
+-},{"gl-shader":164}],158:[function(require,module,exports){
+-'use strict'
++proto.dispose = function() {
++  //Shaders
++  this.shader.dispose()
++  this.orthoShader.dispose()
++  this.pickPerspectiveShader.dispose()
++  this.pickOrthoShader.dispose()
+ 
+-var createBuffer = require('gl-buffer')
+-var createVAO = require('gl-vao')
+-var createShader = require('./shaders/index')
++  //Vertex array
++  this.vao.dispose()
+ 
+-module.exports = createSpikes
++  //Buffers
++  this.pointBuffer.dispose()
++  this.colorBuffer.dispose()
++  this.glyphBuffer.dispose()
++  this.idBuffer.dispose()
++}
+ 
+-var identity = [1,0,0,0,
+-                0,1,0,0,
+-                0,0,1,0,
+-                0,0,0,1]
++function createPointCloud(options) {
++  var gl = options.gl
+ 
+-function AxisSpikes(gl, buffer, vao, shader) {
+-  this.gl         = gl
+-  this.buffer     = buffer
+-  this.vao        = vao
+-  this.shader     = shader
+-  this.pixelRatio = 1
+-  this.bounds     = [[-1000,-1000,-1000], [1000,1000,1000]]
+-  this.position   = [0,0,0]
+-  this.lineWidth  = [2,2,2]
+-  this.colors     = [[0,0,0,1], [0,0,0,1], [0,0,0,1]]
+-  this.enabled    = [true,true,true]
+-  this.drawSides  = [true,true,true]
+-  this.axes       = null
+-}
++  var shader                = shaders.createPerspective(gl)
++  var orthoShader           = shaders.createOrtho(gl)
++  var projectShader         = shaders.createProject(gl)
++  var pickPerspectiveShader = shaders.createPickPerspective(gl)
++  var pickOrthoShader       = shaders.createPickOrtho(gl)
++  var pickProjectShader     = shaders.createPickProject(gl)
+ 
+-var proto = AxisSpikes.prototype
++  var pointBuffer = createBuffer(gl)
++  var colorBuffer = createBuffer(gl)
++  var glyphBuffer = createBuffer(gl)
++  var idBuffer    = createBuffer(gl)
++  var vao = createVAO(gl, [
++    {
++      buffer: pointBuffer,
++      size: 3,
++      type: gl.FLOAT
++    },
++    {
++      buffer: colorBuffer,
++      size: 4,
++      type: gl.FLOAT
++    },
++    {
++      buffer: glyphBuffer,
++      size: 2,
++      type: gl.FLOAT
++    },
++    {
++      buffer: idBuffer,
++      size: 4,
++      type: gl.UNSIGNED_BYTE,
++      normalized: true
++    }
++  ])
+ 
+-var OUTER_FACE = [0,0,0]
+-var INNER_FACE = [0,0,0]
++  var pointCloud = new PointCloud(
++    gl,
++    shader,
++    orthoShader,
++    projectShader,
++    pointBuffer,
++    colorBuffer,
++    glyphBuffer,
++    idBuffer,
++    vao,
++    pickPerspectiveShader,
++    pickOrthoShader,
++    pickProjectShader)
+ 
+-var SHAPE = [0,0]
++  pointCloud.update(options)
+ 
+-proto.isTransparent = function() {
+-  return false
++  return pointCloud
+ }
+ 
+-proto.drawTransparent = function(camera) {}
++},{"./lib/glyphs":129,"./lib/shaders":130,"gl-buffer":94,"gl-mat4/multiply":113,"gl-vao":148,"typedarray-pool":246}],132:[function(require,module,exports){
++'use strict'
+ 
+-proto.draw = function(camera) {
+-  var gl = this.gl
+-  var vao = this.vao
+-  var shader = this.shader
++module.exports = createSelectBuffer
+ 
+-  vao.bind()
+-  shader.bind()
++var createFBO = require('gl-fbo')
++var pool      = require('typedarray-pool')
++var ndarray   = require('ndarray')
+ 
+-  var model      = camera.model || identity
+-  var view       = camera.view || identity
+-  var projection = camera.projection || identity
++var nextPow2  = require('bit-twiddle').nextPow2
++
++var selectRange = require('cwise/lib/wrapper')({"args":["array",{"offset":[0,0,1],"array":0},{"offset":[0,0,2],"array":0},{"offset":[0,0,3],"array":0},"scalar","scalar","index"],"pre":{"body":"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"body":{"body":"{if(_inline_52_arg0_<255||_inline_52_arg1_<255||_inline_52_arg2_<255||_inline_52_arg3_<255){var _inline_52_l=_inline_52_arg4_-_inline_52_arg6_[0],_inline_52_a=_inline_52_arg5_-_inline_52_arg6_[1],_inline_52_f=_inline_52_l*_inline_52_l+_inline_52_a*_inline_52_a;_inline_52_f<this_closestD2&&(this_closestD2=_inline_52_f,this_closestX=_inline_52_arg6_[0],this_closestY=_inline_52_arg6_[1])}}","args":[{"name":"_inline_52_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg4_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg5_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg6_","lvalue":false,"rvalue":true,"count":4}],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":["_inline_52_a","_inline_52_f","_inline_52_l"]},"post":{"body":"{return[this_closestX,this_closestY,this_closestD2]}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
++
++function SelectResult(x, y, id, value, distance) {
++  this.coord = [x, y]
++  this.id = id
++  this.value = value
++  this.distance = distance
++}
+ 
+-  var axis
+-  if(this.axes) {
+-    axis = this.axes.lastCubeProps.axis
+-  }
++function SelectBuffer(gl, fbo, buffer) {
++  this.gl     = gl
++  this.fbo    = fbo
++  this.buffer = buffer
++  this._readTimeout = null
++  var self = this
+ 
+-  var outerFace = OUTER_FACE
+-  var innerFace = INNER_FACE
+-  for(var i=0; i<3; ++i) {
+-    if(axis && axis[i] < 0) {
+-      outerFace[i] = this.bounds[0][i]
+-      innerFace[i] = this.bounds[1][i]
+-    } else {
+-      outerFace[i] = this.bounds[1][i]
+-      innerFace[i] = this.bounds[0][i]
++  this._readCallback = function() {
++    if(!self.gl) {
++      return
+     }
++    fbo.bind()
++    gl.readPixels(0,0,fbo.shape[0],fbo.shape[1],gl.RGBA,gl.UNSIGNED_BYTE,self.buffer)
++    self._readTimeout = null
+   }
++}
+ 
+-  SHAPE[0] = gl.drawingBufferWidth
+-  SHAPE[1] = gl.drawingBufferHeight
+-
+-  shader.uniforms.model       = model
+-  shader.uniforms.view        = view
+-  shader.uniforms.projection  = projection
+-  shader.uniforms.coordinates = [this.position, outerFace, innerFace]
+-  shader.uniforms.colors      = this.colors
+-  shader.uniforms.screenShape = SHAPE
++var proto = SelectBuffer.prototype
+ 
+-  for(var i=0; i<3; ++i) {
+-    shader.uniforms.lineWidth = this.lineWidth[i] * this.pixelRatio
+-    if(this.enabled[i]) {
+-      vao.draw(gl.TRIANGLES, 6, 6*i)
+-      if(this.drawSides[i]) {
+-        vao.draw(gl.TRIANGLES, 12, 18+12*i)
++Object.defineProperty(proto, 'shape', {
++  get: function() {
++    if(!this.gl) {
++      return [0,0]
++    }
++    return this.fbo.shape.slice()
++  },
++  set: function(v) {
++    if(!this.gl) {
++      return
++    }
++    this.fbo.shape = v
++    var c = this.fbo.shape[0]
++    var r = this.fbo.shape[1]
++    if(r*c*4 > this.buffer.length) {
++      pool.free(this.buffer)
++      var buffer = this.buffer = pool.mallocUint8(nextPow2(r*c*4))
++      for(var i=0; i<r*c*4; ++i) {
++        buffer[i] = 0xff
+       }
+     }
++    return v
+   }
++})
+ 
+-  vao.unbind()
++proto.begin = function() {
++  var gl = this.gl
++  var shape = this.shape
++  if(!gl) {
++    return
++  }
++
++  this.fbo.bind()
++  gl.clearColor(1,1,1,1)
++  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+ }
+ 
+-proto.update = function(options) {
+-  if(!options) {
++proto.end = function() {
++  var gl = this.gl
++  if(!gl) {
+     return
+   }
+-  if("bounds" in options) {
+-    this.bounds = options.bounds
+-  }
+-  if("position" in options) {
+-    this.position = options.position
+-  }
+-  if("lineWidth" in options) {
+-    this.lineWidth = options.lineWidth
+-  }
+-  if("colors" in options) {
+-    this.colors = options.colors
+-  }
+-  if("enabled" in options) {
+-    this.enabled = options.enabled
+-  }
+-  if("drawSides" in options) {
+-    this.drawSides = options.drawSides
++  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++  if(!this._readTimeout) {
++    clearTimeout(this._readTimeout)
+   }
++  this._readTimeout = setTimeout(this._readCallback, 1)
+ }
+ 
+-proto.dispose = function() {
+-  this.vao.dispose()
+-  this.buffer.dispose()
+-  this.shader.dispose()
+-}
+-
+-
++proto.query = function(x, y, radius) {
++  if(!this.gl) {
++    return null
++  }
+ 
+-function createSpikes(gl, options) {
+-  //Create buffers
+-  var data = [ ]
++  var shape = this.fbo.shape.slice()
+ 
+-  function line(x,y,z,i,l,h) {
+-    var row = [x,y,z,  0,0,0,  1]
+-    row[i+3] = 1
+-    row[i] = l
+-    data.push.apply(data, row)
+-    row[6] = -1
+-    data.push.apply(data, row)
+-    row[i] = h
+-    data.push.apply(data, row)
+-    data.push.apply(data, row)
+-    row[6] = 1
+-    data.push.apply(data, row)
+-    row[i] = l
+-    data.push.apply(data, row)
++  x = x|0
++  y = y|0
++  if(typeof radius !== 'number') {
++    radius = 1.0
+   }
+ 
+-  line(0,0,0, 0, 0, 1)
+-  line(0,0,0, 1, 0, 1)
+-  line(0,0,0, 2, 0, 1)
+-
+-  line(1,0,0,  1,  -1,1)
+-  line(1,0,0,  2,  -1,1)
++  var x0 = Math.min(Math.max(x - radius, 0), shape[0])|0
++  var x1 = Math.min(Math.max(x + radius, 0), shape[0])|0
++  var y0 = Math.min(Math.max(y - radius, 0), shape[1])|0
++  var y1 = Math.min(Math.max(y + radius, 0), shape[1])|0
+ 
+-  line(0,1,0,  0,  -1,1)
+-  line(0,1,0,  2,  -1,1)
++  if(x1 <= x0 || y1 <= y0) {
++    return null
++  }
+ 
+-  line(0,0,1,  0,  -1,1)
+-  line(0,0,1,  1,  -1,1)
++  var dims   = [x1-x0,y1-y0]
++  var region = ndarray(
++    this.buffer,
++    [dims[0], dims[1], 4],
++    [4, shape[0]*4, 1],
++    4*(x0 + shape[0]*y0));
+ 
+-  var buffer = createBuffer(gl, data)
+-  var vao = createVAO(gl, [{
+-    type: gl.FLOAT,
+-    buffer: buffer,
+-    size: 3,
+-    offset: 0,
+-    stride: 28
+-  }, {
+-    type: gl.FLOAT,
+-    buffer: buffer,
+-    size: 3,
+-    offset: 12,
+-    stride: 28
+-  }, {
+-    type: gl.FLOAT,
+-    buffer: buffer,
+-    size: 1,
+-    offset: 24,
+-    stride: 28
+-  }])
++  var closest = selectRange(region.hi(dims[0],dims[1],1), radius, radius)
++  var dx = closest[0]
++  var dy = closest[1]
++  if(dx < 0 || Math.pow(this.radius, 2) < closest[2]) {
++    return null
++  }
+ 
+-  //Create shader
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location = 1
+-  shader.attributes.weight.location = 2
++  var c0 = region.get(dx, dy, 0)
++  var c1 = region.get(dx, dy, 1)
++  var c2 = region.get(dx, dy, 2)
++  var c3 = region.get(dx, dy, 3)
+ 
+-  //Create spike object
+-  var spikes = new AxisSpikes(gl, buffer, vao, shader)
++  return new SelectResult(
++     (dx + x0)|0,
++     (dy + y0)|0,
++     c0,
++     [c1, c2, c3],
++     Math.sqrt(closest[2]))
++}
+ 
+-  //Set parameters
+-  spikes.update(options)
++proto.dispose = function() {
++  if(!this.gl) {
++    return
++  }
++  this.fbo.dispose()
++  pool.free(this.buffer)
++  this.gl = null
++  if(this._readTimeout) {
++    clearTimeout(this._readTimeout)
++  }
++}
+ 
+-  //Return resulting object
+-  return spikes
++function createSelectBuffer(gl, shape) {
++  var fbo = createFBO(gl, shape)
++  var buffer = pool.mallocUint8(shape[0]*shape[1]*4)
++  return new SelectBuffer(gl, fbo, buffer)
+ }
+ 
+-},{"./shaders/index":157,"gl-buffer":105,"gl-vao":192}],159:[function(require,module,exports){
++},{"bit-twiddle":35,"cwise/lib/wrapper":73,"gl-fbo":99,"ndarray":191,"typedarray-pool":246}],133:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createScene
++var createUniformWrapper   = require('./lib/create-uniforms')
++var createAttributeWrapper = require('./lib/create-attributes')
++var makeReflect            = require('./lib/reflect')
++var shaderCache            = require('./lib/shader-cache')
++var runtime                = require('./lib/runtime-reflect')
++var GLError                = require("./lib/GLError")
+ 
+-var createCamera = require('3d-view-controls')
+-var createAxes   = require('gl-axes3d')
+-var axesRanges   = require('gl-axes3d/properties')
+-var createSpikes = require('gl-spikes3d')
+-var createSelect = require('gl-select-static')
+-var createFBO    = require('gl-fbo')
+-var drawTriangle = require('a-big-triangle')
+-var mouseChange  = require('mouse-change')
+-var perspective  = require('gl-mat4/perspective')
+-var createShader = require('./lib/shader')
++//Shader object
++function Shader(gl) {
++  this.gl         = gl
++  this.gl.lastAttribCount = 0  // fixme where else should we store info, safe but not nice on the gl object
+ 
+-function MouseSelect() {
+-  this.mouse          = [-1,-1]
+-  this.screen         = null
+-  this.distance       = Infinity
+-  this.index          = null
+-  this.dataCoordinate = null
+-  this.dataPosition   = null
+-  this.object         = null
+-  this.data           = null
++  //Default initialize these to null
++  this._vref      =
++  this._fref      =
++  this._relink    =
++  this.vertShader =
++  this.fragShader =
++  this.program    =
++  this.attributes =
++  this.uniforms   =
++  this.types      = null
+ }
+ 
+-function getContext(canvas, options) {
+-  var gl = null
+-  try {
+-    gl = canvas.getContext('webgl', options)
+-    if(!gl) {
+-      gl = canvas.getContext('experimental-webgl', options)
+-    }
+-  } catch(e) {
+-    return null
+-  }
+-  return gl
+-}
++var proto = Shader.prototype
+ 
+-function roundUpPow10(x) {
+-  var y = Math.round(Math.log(Math.abs(x)) / Math.log(10))
+-  if(y < 0) {
+-    var base = Math.round(Math.pow(10, -y))
+-    return Math.ceil(x*base) / base
+-  } else if(y > 0) {
+-    var base = Math.round(Math.pow(10, y))
+-    return Math.ceil(x/base) * base
++proto.bind = function() {
++  if(!this.program) {
++    this._relink()
+   }
+-  return Math.ceil(x)
+-}
+ 
+-function defaultBool(x) {
+-  if(typeof x === 'boolean') {
+-    return x
++  // ensuring that we have the right number of enabled vertex attributes
++  var i
++  var newAttribCount = this.gl.getProgramParameter(this.program, this.gl.ACTIVE_ATTRIBUTES) // more robust approach
++  //var newAttribCount = Object.keys(this.attributes).length // avoids the probably immaterial introspection slowdown
++  var oldAttribCount = this.gl.lastAttribCount
++  if(newAttribCount > oldAttribCount) {
++    for(i = oldAttribCount; i < newAttribCount; i++) {
++      this.gl.enableVertexAttribArray(i)
++    }
++  } else if(oldAttribCount > newAttribCount) {
++    for(i = newAttribCount; i < oldAttribCount; i++) {
++      this.gl.disableVertexAttribArray(i)
++    }
+   }
+-  return true
+-}
+ 
+-function createScene(options) {
+-  options = options || {}
++  this.gl.lastAttribCount = newAttribCount
+ 
+-  var stopped = false
++  this.gl.useProgram(this.program)
++}
+ 
+-  var pixelRatio = options.pixelRatio || parseFloat(window.devicePixelRatio)
++proto.dispose = function() {
+ 
+-  var canvas = options.canvas
+-  if(!canvas) {
+-    canvas = document.createElement('canvas')
+-    if(options.container) {
+-      var container = options.container
+-      container.appendChild(canvas)
+-    } else {
+-      document.body.appendChild(canvas)
+-    }
++  // disabling vertex attributes so new shader starts with zero
++  // and it's also useful if all shaders are disposed but the
++  // gl context is reused for subsequent replotting
++  var oldAttribCount = this.gl.lastAttribCount
++  for (var i = 0; i < oldAttribCount; i++) {
++    this.gl.disableVertexAttribArray(i)
+   }
++  this.gl.lastAttribCount = 0
+ 
+-  var gl = options.gl
+-  if(!gl) {
+-    gl = getContext(canvas,
+-      options.glOptions || {
+-        premultipliedAlpha: true,
+-        antialias: true
+-      })
++  if(this._fref) {
++    this._fref.dispose()
+   }
+-  if(!gl) {
+-    throw new Error('webgl not supported')
++  if(this._vref) {
++    this._vref.dispose()
+   }
++  this.attributes =
++  this.types      =
++  this.vertShader =
++  this.fragShader =
++  this.program    =
++  this._relink    =
++  this._fref      =
++  this._vref      = null
++}
+ 
+-  //Initial bounds
+-  var bounds = options.bounds || [[-10,-10,-10], [10,10,10]]
+-
+-  //Create selection
+-  var selection = new MouseSelect()
+-
+-  //Accumulation buffer
+-  var accumBuffer = createFBO(gl,
+-    [gl.drawingBufferWidth, gl.drawingBufferHeight], {
+-      preferFloat: true
+-    })
+-
+-  var accumShader = createShader(gl)
+-
+-  //Create a camera
+-  var cameraOptions = options.camera || {
+-    eye:    [2,0,0],
+-    center: [0,0,0],
+-    up:     [0,1,0],
+-    zoomMin: 0.1,
+-    zoomMax: 100,
+-    mode:    'turntable'
++function compareAttributes(a, b) {
++  if(a.name < b.name) {
++    return -1
+   }
++  return 1
++}
+ 
+-  //Create axes
+-  var axesOptions = options.axes || {}
+-  var axes = createAxes(gl, axesOptions)
+-  axes.enable = !axesOptions.disable
+-
+-  //Create spikes
+-  var spikeOptions = options.spikes || {}
+-  var spikes = createSpikes(gl, spikeOptions)
+-
+-  //Object list is empty initially
+-  var objects         = []
+-  var pickBufferIds   = []
+-  var pickBufferCount = []
+-  var pickBuffers     = []
+-
+-  //Dirty flag, skip redraw if scene static
+-  var dirty       = true
+-  var pickDirty   = true
+-
+-  var projection     = new Array(16)
+-  var model          = new Array(16)
++//Update export hook for glslify-live
++proto.update = function(
++    vertSource
++  , fragSource
++  , uniforms
++  , attributes) {
+ 
+-  var cameraParams = {
+-    view:         null,
+-    projection:   projection,
+-    model:        model
++  //If only one object passed, assume glslify style output
++  if(!fragSource || arguments.length === 1) {
++    var obj = vertSource
++    vertSource = obj.vertex
++    fragSource = obj.fragment
++    uniforms   = obj.uniforms
++    attributes = obj.attributes
+   }
+ 
+-  var pickDirty = true
+-
+-  var viewShape = [ gl.drawingBufferWidth, gl.drawingBufferHeight ]
++  var wrapper = this
++  var gl      = wrapper.gl
+ 
+-  //Create scene object
+-  var scene = {
+-    gl:           gl,
+-    contextLost:  false,
+-    pixelRatio:   options.pixelRatio || parseFloat(window.devicePixelRatio),
+-    canvas:       canvas,
+-    selection:    selection,
+-    camera:       createCamera(canvas, cameraOptions),
+-    axes:         axes,
+-    axesPixels:   null,
+-    spikes:       spikes,
+-    bounds:       bounds,
+-    objects:      objects,
+-    shape:        viewShape,
+-    aspect:       options.aspectRatio || [1,1,1],
+-    pickRadius:   options.pickRadius || 10,
+-    zNear:        options.zNear || 0.01,
+-    zFar:         options.zFar  || 1000,
+-    fovy:         options.fovy  || Math.PI/4,
+-    clearColor:   options.clearColor || [0,0,0,0],
+-    autoResize:   defaultBool(options.autoResize),
+-    autoBounds:   defaultBool(options.autoBounds),
+-    autoScale:    !!options.autoScale,
+-    autoCenter:   defaultBool(options.autoCenter),
+-    clipToBounds: defaultBool(options.clipToBounds),
+-    snapToData:   !!options.snapToData,
+-    onselect:     options.onselect || null,
+-    onrender:     options.onrender || null,
+-    onclick:      options.onclick  || null,
+-    cameraParams: cameraParams,
+-    oncontextloss: null,
+-    mouseListener: null
++  //Compile vertex and fragment shaders
++  var pvref = wrapper._vref
++  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
++  if(pvref) {
++    pvref.dispose()
++  }
++  wrapper.vertShader = wrapper._vref.shader
++  var pfref = this._fref
++  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
++  if(pfref) {
++    pfref.dispose()
+   }
++  wrapper.fragShader = wrapper._fref.shader
+ 
+-  var pickShape = [ (gl.drawingBufferWidth/scene.pixelRatio)|0, (gl.drawingBufferHeight/scene.pixelRatio)|0 ]
++  //If uniforms/attributes is not specified, use RT reflection
++  if(!uniforms || !attributes) {
+ 
+-  function resizeListener() {
+-    if(stopped) {
+-      return
+-    }
+-    if(!scene.autoResize) {
+-      return
+-    }
+-    var parent = canvas.parentNode
+-    var width  = 1
+-    var height = 1
+-    if(parent && parent !== document.body) {
+-      width  = parent.clientWidth
+-      height = parent.clientHeight
+-    } else {
+-      width  = window.innerWidth
+-      height = window.innerHeight
+-    }
+-    var nextWidth  = Math.ceil(width  * scene.pixelRatio)|0
+-    var nextHeight = Math.ceil(height * scene.pixelRatio)|0
+-    if(nextWidth !== canvas.width || nextHeight !== canvas.height) {
+-      canvas.width   = nextWidth
+-      canvas.height  = nextHeight
+-      var style = canvas.style
+-      style.position = style.position || 'absolute'
+-      style.left     = '0px'
+-      style.top      = '0px'
+-      style.width    = width  + 'px'
+-      style.height   = height + 'px'
+-      dirty = true
++    //Create initial test program
++    var testProgram = gl.createProgram()
++    gl.attachShader(testProgram, wrapper.fragShader)
++    gl.attachShader(testProgram, wrapper.vertShader)
++    gl.linkProgram(testProgram)
++    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
++      var errLog = gl.getProgramInfoLog(testProgram)
++      throw new GLError(errLog, 'Error linking program:' + errLog)
+     }
+-  }
+-  if(scene.autoResize) {
+-    resizeListener()
+-  }
+-  window.addEventListener('resize', resizeListener)
+ 
+-  function reallocPickIds() {
+-    var numObjs = objects.length
+-    var numPick = pickBuffers.length
+-    for(var i=0; i<numPick; ++i) {
+-      pickBufferCount[i] = 0
+-    }
+-    obj_loop:
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
+-      var pickCount = obj.pickSlots
+-      if(!pickCount) {
+-        pickBufferIds[i] = -1
+-        continue
+-      }
+-      for(var j=0; j<numPick; ++j) {
+-        if(pickBufferCount[j] + pickCount < 255) {
+-          pickBufferIds[i] = j
+-          obj.setPickBase(pickBufferCount[j]+1)
+-          pickBufferCount[j] += pickCount
+-          continue obj_loop
++    //Load data from runtime
++    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
++    attributes = attributes || runtime.attributes(gl, testProgram)
++
++    //Release test program
++    gl.deleteProgram(testProgram)
++  }
++
++  //Sort attributes lexicographically
++  // overrides undefined WebGL behavior for attribute locations
++  attributes = attributes.slice()
++  attributes.sort(compareAttributes)
++
++  //Convert attribute types, read out locations
++  var attributeUnpacked  = []
++  var attributeNames     = []
++  var attributeLocations = []
++  var i
++  for(i=0; i<attributes.length; ++i) {
++    var attr = attributes[i]
++    if(attr.type.indexOf('mat') >= 0) {
++      var size = attr.type.charAt(attr.type.length-1)|0
++      var locVector = new Array(size)
++      for(var j=0; j<size; ++j) {
++        locVector[j] = attributeLocations.length
++        attributeNames.push(attr.name + '[' + j + ']')
++        if(typeof attr.location === 'number') {
++          attributeLocations.push(attr.location + j)
++        } else if(Array.isArray(attr.location) &&
++                  attr.location.length === size &&
++                  typeof attr.location[j] === 'number') {
++          attributeLocations.push(attr.location[j]|0)
++        } else {
++          attributeLocations.push(-1)
+         }
+       }
+-      //Create new pick buffer
+-      var nbuffer = createSelect(gl, viewShape)
+-      pickBufferIds[i] = numPick
+-      pickBuffers.push(nbuffer)
+-      pickBufferCount.push(pickCount)
+-      obj.setPickBase(1)
+-      numPick += 1
+-    }
+-    while(numPick > 0 && pickBufferCount[numPick-1] === 0) {
+-      pickBufferCount.pop()
+-      pickBuffers.pop().dispose()
++      attributeUnpacked.push({
++        name: attr.name,
++        type: attr.type,
++        locations: locVector
++      })
++    } else {
++      attributeUnpacked.push({
++        name: attr.name,
++        type: attr.type,
++        locations: [ attributeLocations.length ]
++      })
++      attributeNames.push(attr.name)
++      if(typeof attr.location === 'number') {
++        attributeLocations.push(attr.location|0)
++      } else {
++        attributeLocations.push(-1)
++      }
+     }
+   }
+ 
+-  scene.update = function(options) {
+-    if(stopped) {
+-      return
++  //For all unspecified attributes, assign them lexicographically min attribute
++  var curLocation = 0
++  for(i=0; i<attributeLocations.length; ++i) {
++    if(attributeLocations[i] < 0) {
++      while(attributeLocations.indexOf(curLocation) >= 0) {
++        curLocation += 1
++      }
++      attributeLocations[i] = curLocation
+     }
+-    options = options || {}
+-    dirty = true
+-    pickDirty = true
+   }
+ 
+-  scene.add = function(obj) {
+-    if(stopped) {
+-      return
++  //Rebuild program and recompute all uniform locations
++  var uniformLocations = new Array(uniforms.length)
++  function relink() {
++    wrapper.program = shaderCache.program(
++        gl
++      , wrapper._vref
++      , wrapper._fref
++      , attributeNames
++      , attributeLocations)
++
++    for(var i=0; i<uniforms.length; ++i) {
++      uniformLocations[i] = gl.getUniformLocation(
++          wrapper.program
++        , uniforms[i].name)
+     }
+-    obj.axes = axes
+-    objects.push(obj)
+-    pickBufferIds.push(-1)
+-    dirty = true
+-    pickDirty = true
+-    reallocPickIds()
+   }
+ 
+-  scene.remove = function(obj) {
+-    if(stopped) {
+-      return
+-    }
+-    var idx = objects.indexOf(obj)
+-    if(idx < 0) {
+-      return
+-    }
+-    objects.splice(idx, 1)
+-    pickBufferIds.pop()
+-    dirty = true
+-    pickDirty = true
+-    reallocPickIds()
++  //Perform initial linking, reuse program used for reflection
++  relink()
++
++  //Save relinking procedure, defer until runtime
++  wrapper._relink = relink
++
++  //Generate type info
++  wrapper.types = {
++    uniforms:   makeReflect(uniforms),
++    attributes: makeReflect(attributes)
+   }
+ 
+-  scene.dispose = function() {
+-    if(stopped) {
+-      return
+-    }
++  //Generate attribute wrappers
++  wrapper.attributes = createAttributeWrapper(
++      gl
++    , wrapper
++    , attributeUnpacked
++    , attributeLocations)
+ 
+-    stopped = true
++  //Generate uniform wrappers
++  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
++      gl
++    , wrapper
++    , uniforms
++    , uniformLocations))
++}
+ 
+-    window.removeEventListener('resize', resizeListener)
+-    canvas.removeEventListener('webglcontextlost', checkContextLoss)
+-    scene.mouseListener.enabled = false
++//Compiles and links a shader program with the given attribute and vertex list
++function createShader(
++    gl
++  , vertSource
++  , fragSource
++  , uniforms
++  , attributes) {
+ 
+-    if(scene.contextLost) {
+-      return
+-    }
++  var shader = new Shader(gl)
+ 
+-    //Destroy objects
+-    axes.dispose()
+-    spikes.dispose()
+-    for(var i=0; i<objects.length; ++i) {
+-      objects[i].dispose()
+-    }
++  shader.update(
++      vertSource
++    , fragSource
++    , uniforms
++    , attributes)
+ 
+-    //Clean up buffers
+-    accumBuffer.dispose()
+-    for(var i=0; i<pickBuffers.length; ++i) {
+-      pickBuffers[i].dispose()
+-    }
++  return shader
++}
+ 
+-    //Clean up shaders
+-    accumShader.dispose()
++module.exports = createShader
+ 
+-    //Release all references
+-    gl = null
+-    axes = null
+-    spikes = null
+-    objects = []
+-  }
++},{"./lib/GLError":134,"./lib/create-attributes":135,"./lib/create-uniforms":136,"./lib/reflect":137,"./lib/runtime-reflect":138,"./lib/shader-cache":139}],134:[function(require,module,exports){
++function GLError (rawError, shortMessage, longMessage) {
++    this.shortMessage = shortMessage || ''
++    this.longMessage = longMessage || ''
++    this.rawError = rawError || ''
++    this.message =
++      'gl-shader: ' + (shortMessage || rawError || '') +
++      (longMessage ? '\n'+longMessage : '')
++    this.stack = (new Error()).stack
++}
++GLError.prototype = new Error
++GLError.prototype.name = 'GLError'
++GLError.prototype.constructor = GLError
++module.exports = GLError
+ 
+-  //Update mouse position
+-  var mouseRotating = false
++},{}],135:[function(require,module,exports){
++'use strict'
+ 
+-  var prevButtons = 0
++module.exports = createAttributeWrapper
+ 
+-  scene.mouseListener = mouseChange(canvas, function(buttons, x, y) {
+-    if(stopped) {
+-      return
+-    }
++var GLError = require("./GLError")
+ 
+-    var numPick = pickBuffers.length
+-    var numObjs = objects.length
+-    var prevObj = selection.object
++function ShaderAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , constFunc) {
++  this._gl        = gl
++  this._wrapper   = wrapper
++  this._index     = index
++  this._locations = locations
++  this._dimension = dimension
++  this._constFunc = constFunc
++}
+ 
+-    selection.distance = Infinity
+-    selection.mouse[0] = x
+-    selection.mouse[1] = y
+-    selection.object = null
+-    selection.screen = null
+-    selection.dataCoordinate = selection.dataPosition = null
++var proto = ShaderAttribute.prototype
+ 
+-    var change = false
++proto.pointer = function setAttribPointer(
++    type
++  , normalized
++  , stride
++  , offset) {
+ 
+-    if(buttons && prevButtons) {
+-      mouseRotating = true
+-    } else {
+-      if(mouseRotating) {
+-        pickDirty = true
+-      }
+-      mouseRotating = false
++  var self      = this
++  var gl        = self._gl
++  var location  = self._locations[self._index]
+ 
+-      for(var i=0; i<numPick; ++i) {
+-        var result = pickBuffers[i].query(x, pickShape[1] - y - 1, scene.pickRadius)
+-        if(result) {
+-          if(result.distance > selection.distance) {
+-            continue
+-          }
+-          for(var j=0; j<numObjs; ++j) {
+-            var obj = objects[j]
+-            if(pickBufferIds[j] !== i) {
+-              continue
+-            }
+-            var objPick = obj.pick(result)
+-            if(objPick) {
+-              selection.buttons        = buttons
+-              selection.screen         = result.coord
+-              selection.distance       = result.distance
+-              selection.object         = obj
+-              selection.index          = objPick.distance
+-              selection.dataPosition   = objPick.position
+-              selection.dataCoordinate = objPick.dataCoordinate
+-              selection.data           = objPick
+-              change = true
+-            }
+-          }
+-        }
+-      }
+-    }
++  gl.vertexAttribPointer(
++      location
++    , self._dimension
++    , type || gl.FLOAT
++    , !!normalized
++    , stride || 0
++    , offset || 0)
++  gl.enableVertexAttribArray(location)
++}
+ 
+-    if(prevObj && prevObj !== selection.object) {
+-      if(prevObj.highlight) {
+-        prevObj.highlight(null)
+-      }
+-      dirty = true
+-    }
+-    if(selection.object) {
+-      if(selection.object.highlight) {
+-        selection.object.highlight(selection.data)
+-      }
+-      dirty = true
+-    }
++proto.set = function(x0, x1, x2, x3) {
++  return this._constFunc(this._locations[this._index], x0, x1, x2, x3)
++}
+ 
+-    change = change || (selection.object !== prevObj)
+-    if(change && scene.onselect) {
+-      scene.onselect(selection)
++Object.defineProperty(proto, 'location', {
++  get: function() {
++    return this._locations[this._index]
++  }
++  , set: function(v) {
++    if(v !== this._locations[this._index]) {
++      this._locations[this._index] = v|0
++      this._wrapper.program = null
+     }
++    return v|0
++  }
++})
+ 
+-    if((buttons & 1) && !(prevButtons & 1) && scene.onclick) {
+-      scene.onclick(selection)
++//Adds a vector attribute to obj
++function addVectorAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , obj
++  , name) {
++
++  //Construct constant function
++  var constFuncArgs = [ 'gl', 'v' ]
++  var varNames = []
++  for(var i=0; i<dimension; ++i) {
++    constFuncArgs.push('x'+i)
++    varNames.push('x'+i)
++  }
++  constFuncArgs.push(
++    'if(x0.length===void 0){return gl.vertexAttrib' +
++    dimension + 'f(v,' +
++    varNames.join() +
++    ')}else{return gl.vertexAttrib' +
++    dimension +
++    'fv(v,x0)}')
++  var constFunc = Function.apply(null, constFuncArgs)
++
++  //Create attribute wrapper
++  var attr = new ShaderAttribute(
++      gl
++    , wrapper
++    , index
++    , locations
++    , dimension
++    , constFunc)
++
++  //Create accessor
++  Object.defineProperty(obj, name, {
++    set: function(x) {
++      gl.disableVertexAttribArray(locations[index])
++      constFunc(gl, locations[index], x)
++      return x
+     }
+-    prevButtons = buttons
++    , get: function() {
++      return attr
++    }
++    , enumerable: true
+   })
++}
+ 
+-  function checkContextLoss() {
+-    if(scene.contextLost) {
+-      return true
++function addMatrixAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , obj
++  , name) {
++
++  var parts = new Array(dimension)
++  var attrs = new Array(dimension)
++  for(var i=0; i<dimension; ++i) {
++    addVectorAttribute(
++        gl
++      , wrapper
++      , index[i]
++      , locations
++      , dimension
++      , parts
++      , i)
++    attrs[i] = parts[i]
++  }
++
++  Object.defineProperty(parts, 'location', {
++    set: function(v) {
++      if(Array.isArray(v)) {
++        for(var i=0; i<dimension; ++i) {
++          attrs[i].location = v[i]
++        }
++      } else {
++        for(var i=0; i<dimension; ++i) {
++          attrs[i].location = v + i
++        }
++      }
++      return v
+     }
+-    if(gl.isContextLost()) {
+-      scene.contextLost = true
+-      scene.mouseListener.enabled = false
+-      scene.selection.object = null
+-      if(scene.oncontextloss) {
+-        scene.oncontextloss()
++    , get: function() {
++      var result = new Array(dimension)
++      for(var i=0; i<dimension; ++i) {
++        result[i] = locations[index[i]]
+       }
++      return result
++    }
++    , enumerable: true
++  })
++
++  parts.pointer = function(type, normalized, stride, offset) {
++    type       = type || gl.FLOAT
++    normalized = !!normalized
++    stride     = stride || (dimension * dimension)
++    offset     = offset || 0
++    for(var i=0; i<dimension; ++i) {
++      var location = locations[index[i]]
++      gl.vertexAttribPointer(
++            location
++          , dimension
++          , type
++          , normalized
++          , stride
++          , offset + i * dimension)
++      gl.enableVertexAttribArray(location)
+     }
+   }
+ 
+-  canvas.addEventListener('webglcontextlost', checkContextLoss)
++  var scratch = new Array(dimension)
++  var vertexAttrib = gl['vertexAttrib' + dimension + 'fv']
+ 
+-  //Render the scene for mouse picking
+-  function renderPick() {
+-    if(checkContextLoss()) {
+-      return
++  Object.defineProperty(obj, name, {
++    set: function(x) {
++      for(var i=0; i<dimension; ++i) {
++        var loc = locations[index[i]]
++        gl.disableVertexAttribArray(loc)
++        if(Array.isArray(x[0])) {
++          vertexAttrib.call(gl, loc, x[i])
++        } else {
++          for(var j=0; j<dimension; ++j) {
++            scratch[j] = x[dimension*i + j]
++          }
++          vertexAttrib.call(gl, loc, scratch)
++        }
++      }
++      return x
++    }
++    , get: function() {
++      return parts
+     }
++    , enumerable: true
++  })
++}
+ 
+-    gl.colorMask(true, true, true, true)
+-    gl.depthMask(true)
+-    gl.disable(gl.BLEND)
+-    gl.enable(gl.DEPTH_TEST)
++//Create shims for attributes
++function createAttributeWrapper(
++    gl
++  , wrapper
++  , attributes
++  , locations) {
+ 
+-    var numObjs = objects.length
+-    var numPick = pickBuffers.length
+-    for(var j=0; j<numPick; ++j) {
+-      var buf = pickBuffers[j]
+-      buf.shape = pickShape
+-      buf.begin()
+-      for(var i=0; i<numObjs; ++i) {
+-        if(pickBufferIds[i] !== j) {
+-          continue
+-        }
+-        var obj = objects[i]
+-        if(obj.drawPick) {
+-          obj.pixelRatio = 1
+-          obj.drawPick(cameraParams)
++  var obj = {}
++  for(var i=0, n=attributes.length; i<n; ++i) {
++
++    var a = attributes[i]
++    var name = a.name
++    var type = a.type
++    var locs = a.locations
++
++    switch(type) {
++      case 'bool':
++      case 'int':
++      case 'float':
++        addVectorAttribute(
++            gl
++          , wrapper
++          , locs[0]
++          , locations
++          , 1
++          , obj
++          , name)
++      break
++
++      default:
++        if(type.indexOf('vec') >= 0) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
++          }
++          addVectorAttribute(
++              gl
++            , wrapper
++            , locs[0]
++            , locations
++            , d
++            , obj
++            , name)
++        } else if(type.indexOf('mat') >= 0) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
++          }
++          addMatrixAttribute(
++              gl
++            , wrapper
++            , locs
++            , locations
++            , d
++            , obj
++            , name)
++        } else {
++          throw new GLError('', 'Unknown data type for attribute ' + name + ': ' + type)
+         }
+-      }
+-      buf.end()
++      break
+     }
+   }
++  return obj
++}
+ 
+-  var nBounds = [
+-    [ Infinity, Infinity, Infinity],
+-    [-Infinity,-Infinity,-Infinity]]
+-
+-  var prevBounds = [nBounds[0].slice(), nBounds[1].slice()]
+-
+-  function redraw() {
+-    if(checkContextLoss()) {
+-      return
+-    }
++},{"./GLError":134}],136:[function(require,module,exports){
++'use strict'
+ 
+-    resizeListener()
++var coallesceUniforms = require('./reflect')
++var GLError = require("./GLError")
+ 
+-    //Tick camera
+-    var cameraMoved = scene.camera.tick()
+-    cameraParams.view = scene.camera.matrix
+-    dirty     = dirty || cameraMoved
+-    pickDirty = pickDirty || cameraMoved
++module.exports = createUniformWrapper
+ 
+-      //Set pixel ratio
+-    axes.pixelRatio   = scene.pixelRatio
+-    spikes.pixelRatio = scene.pixelRatio
++//Binds a function and returns a value
++function identity(x) {
++  var c = new Function('y', 'return function(){return y}')
++  return c(x)
++}
+ 
+-    //Check if any objects changed, recalculate bounds
+-    var numObjs = objects.length
+-    var lo = nBounds[0]
+-    var hi = nBounds[1]
+-    lo[0] = lo[1] = lo[2] =  Infinity
+-    hi[0] = hi[1] = hi[2] = -Infinity
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
++function makeVector(length, fill) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = fill
++  }
++  return result
++}
+ 
+-      //Set the axes properties for each object
+-      obj.pixelRatio = scene.pixelRatio
+-      obj.axes = scene.axes
++//Create shims for uniforms
++function createUniformWrapper(gl, wrapper, uniforms, locations) {
+ 
+-      dirty = dirty || !!obj.dirty
+-      pickDirty = pickDirty || !!obj.dirty
+-      var obb = obj.bounds
+-      if(obb) {
+-        var olo = obb[0]
+-        var ohi = obb[1]
+-        for(var j=0; j<3; ++j) {
+-          lo[j] = Math.min(lo[j], olo[j])
+-          hi[j] = Math.max(hi[j], ohi[j])
+-        }
+-      }
+-    }
++  function makeGetter(index) {
++    var proc = new Function(
++        'gl'
++      , 'wrapper'
++      , 'locations'
++      , 'return function(){return gl.getUniform(wrapper.program,locations[' + index + '])}')
++    return proc(gl, wrapper, locations)
++  }
+ 
+-    //Recalculate bounds
+-    var bounds = scene.bounds
+-    if(scene.autoBounds) {
+-      for(var j=0; j<3; ++j) {
+-        if(hi[j] < lo[j]) {
+-          lo[j] = -1
+-          hi[j] = 1
+-        } else {
+-          if(lo[j] === hi[j]) {
+-            lo[j] -= 1
+-            hi[j] += 1
++  function makePropSetter(path, index, type) {
++    switch(type) {
++      case 'bool':
++      case 'int':
++      case 'sampler2D':
++      case 'samplerCube':
++        return 'gl.uniform1i(locations[' + index + '],obj' + path + ')'
++      case 'float':
++        return 'gl.uniform1f(locations[' + index + '],obj' + path + ')'
++      default:
++        var vidx = type.indexOf('vec')
++        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type')
+           }
+-          var padding = 0.05 * (hi[j] - lo[j])
+-          lo[j] = lo[j] - padding
+-          hi[j] = hi[j] + padding
++          switch(type.charAt(0)) {
++            case 'b':
++            case 'i':
++              return 'gl.uniform' + d + 'iv(locations[' + index + '],obj' + path + ')'
++            case 'v':
++              return 'gl.uniform' + d + 'fv(locations[' + index + '],obj' + path + ')'
++            default:
++              throw new GLError('', 'Unrecognized data type for vector ' + name + ': ' + type)
++          }
++        } else if(type.indexOf('mat') === 0 && type.length === 4) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
++          }
++          return 'gl.uniformMatrix' + d + 'fv(locations[' + index + '],false,obj' + path + ')'
++        } else {
++          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
+         }
+-        bounds[0][j] = lo[j]
+-        bounds[1][j] = hi[j]
+-      }
++      break
+     }
++  }
+ 
+-    var boundsChanged = false
+-    for(var j=0; j<3; ++j) {
+-        boundsChanged = boundsChanged ||
+-            (prevBounds[0][j] !== bounds[0][j])  ||
+-            (prevBounds[1][j] !== bounds[1][j])
+-        prevBounds[0][j] = bounds[0][j]
+-        prevBounds[1][j] = bounds[1][j]
++  function enumerateIndices(prefix, type) {
++    if(typeof type !== 'object') {
++      return [ [prefix, type] ]
+     }
+-
+-    if(boundsChanged) {
+-      var tickSpacing = [0,0,0]
+-      for(var i=0; i<3; ++i) {
+-        tickSpacing[i] = roundUpPow10((bounds[1][i]-bounds[0][i]) / 10.0)
++    var indices = []
++    for(var id in type) {
++      var prop = type[id]
++      var tprefix = prefix
++      if(parseInt(id) + '' === id) {
++        tprefix += '[' + id + ']'
++      } else {
++        tprefix += '.' + id
+       }
+-      if(axes.autoTicks) {
+-        axes.update({
+-          bounds: bounds,
+-          tickSpacing: tickSpacing
+-        })
++      if(typeof prop === 'object') {
++        indices.push.apply(indices, enumerateIndices(tprefix, prop))
+       } else {
+-        axes.update({
+-          bounds: bounds
+-        })
++        indices.push([tprefix, prop])
+       }
+     }
++    return indices
++  }
+ 
+-    //Recalculate bounds
+-    pickDirty = pickDirty || boundsChanged
+-    dirty = dirty || boundsChanged
+-
+-    //Get scene
+-    var width  = gl.drawingBufferWidth
+-    var height = gl.drawingBufferHeight
+-    viewShape[0] = width
+-    viewShape[1] = height
+-    pickShape[0] = Math.max(width/scene.pixelRatio, 1)|0
+-    pickShape[1] = Math.max(height/scene.pixelRatio, 1)|0
+-
+-    //Compute camera parameters
+-    perspective(projection,
+-      scene.fovy,
+-      width/height,
+-      scene.zNear,
+-      scene.zFar)
+-
+-    //Compute model matrix
+-    for(var i=0; i<16; ++i) {
+-      model[i] = 0
++  function makeSetter(type) {
++    var code = [ 'return function updateProperty(obj){' ]
++    var indices = enumerateIndices('', type)
++    for(var i=0; i<indices.length; ++i) {
++      var item = indices[i]
++      var path = item[0]
++      var idx  = item[1]
++      if(locations[idx]) {
++        code.push(makePropSetter(path, idx, uniforms[idx].type))
++      }
+     }
+-    model[15] = 1
++    code.push('return obj}')
++    var proc = new Function('gl', 'locations', code.join('\n'))
++    return proc(gl, locations)
++  }
+ 
+-    var maxS = 0
+-    for(var i=0; i<3; ++i) {
+-      maxS = Math.max(maxS, bounds[1][i] - bounds[0][i])
++  function defaultValue(type) {
++    switch(type) {
++      case 'bool':
++        return false
++      case 'int':
++      case 'sampler2D':
++      case 'samplerCube':
++        return 0
++      case 'float':
++        return 0.0
++      default:
++        var vidx = type.indexOf('vec')
++        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type')
++          }
++          if(type.charAt(0) === 'b') {
++            return makeVector(d, false)
++          }
++          return makeVector(d, 0)
++        } else if(type.indexOf('mat') === 0 && type.length === 4) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
++          }
++          return makeVector(d*d, 0)
++        } else {
++          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
++        }
++      break
+     }
++  }
+ 
+-    for(var i=0; i<3; ++i) {
+-      if(scene.autoScale) {
+-        model[5*i] = scene.aspect[i] / (bounds[1][i] - bounds[0][i])
++  function storeProperty(obj, prop, type) {
++    if(typeof type === 'object') {
++      var child = processObject(type)
++      Object.defineProperty(obj, prop, {
++        get: identity(child),
++        set: makeSetter(type),
++        enumerable: true,
++        configurable: false
++      })
++    } else {
++      if(locations[type]) {
++        Object.defineProperty(obj, prop, {
++          get: makeGetter(type),
++          set: makeSetter(type),
++          enumerable: true,
++          configurable: false
++        })
+       } else {
+-        model[5*i] = 1  / maxS
+-      }
+-      if(scene.autoCenter) {
+-        model[12+i] = -model[5*i] * 0.5 * (bounds[0][i] + bounds[1][i])
++        obj[prop] = defaultValue(uniforms[type].type)
+       }
+     }
++  }
+ 
+-    //Apply axes/clip bounds
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
+-
+-      //Set axes bounds
+-      obj.axesBounds = bounds
+-
+-      //Set clip bounds
+-      if(scene.clipToBounds) {
+-        obj.clipBounds = bounds
++  function processObject(obj) {
++    var result
++    if(Array.isArray(obj)) {
++      result = new Array(obj.length)
++      for(var i=0; i<obj.length; ++i) {
++        storeProperty(result, i, obj[i])
+       }
+-    }
+-
+-    //Set spike parameters
+-    if(selection.object) {
+-      if(scene.snapToData) {
+-        spikes.position = selection.dataCoordinate
+-      } else {
+-        spikes.position = selection.dataPosition
++    } else {
++      result = {}
++      for(var id in obj) {
++        storeProperty(result, id, obj[id])
+       }
+-      spikes.bounds = bounds
+     }
++    return result
++  }
+ 
+-    //If state changed, then redraw pick buffers
+-    if(pickDirty) {
+-      pickDirty = false
+-      renderPick()
+-    }
++  //Return data
++  var coallesced = coallesceUniforms(uniforms, true)
++  return {
++    get: identity(processObject(coallesced)),
++    set: makeSetter(coallesced),
++    enumerable: true,
++    configurable: true
++  }
++}
+ 
+-    if(!dirty) {
+-      return
+-    }
++},{"./GLError":134,"./reflect":137}],137:[function(require,module,exports){
++'use strict'
+ 
+-    //Recalculate pixel data
+-    scene.axesPixels = axesRanges(scene.axes, cameraParams, width, height)
++module.exports = makeReflectTypes
+ 
+-    //Call render callback
+-    if(scene.onrender) {
+-      scene.onrender()
++//Construct type info for reflection.
++//
++// This iterates over the flattened list of uniform type values and smashes them into a JSON object.
++//
++// The leaves of the resulting object are either indices or type strings representing primitive glslify types
++function makeReflectTypes(uniforms, useIndex) {
++  var obj = {}
++  for(var i=0; i<uniforms.length; ++i) {
++    var n = uniforms[i].name
++    var parts = n.split(".")
++    var o = obj
++    for(var j=0; j<parts.length; ++j) {
++      var x = parts[j].split("[")
++      if(x.length > 1) {
++        if(!(x[0] in o)) {
++          o[x[0]] = []
++        }
++        o = o[x[0]]
++        for(var k=1; k<x.length; ++k) {
++          var y = parseInt(x[k])
++          if(k<x.length-1 || j<parts.length-1) {
++            if(!(y in o)) {
++              if(k < x.length-1) {
++                o[y] = []
++              } else {
++                o[y] = {}
++              }
++            }
++            o = o[y]
++          } else {
++            if(useIndex) {
++              o[y] = i
++            } else {
++              o[y] = uniforms[i].type
++            }
++          }
++        }
++      } else if(j < parts.length-1) {
++        if(!(x[0] in o)) {
++          o[x[0]] = {}
++        }
++        o = o[x[0]]
++      } else {
++        if(useIndex) {
++          o[x[0]] = i
++        } else {
++          o[x[0]] = uniforms[i].type
++        }
++      }
+     }
++  }
++  return obj
++}
++},{}],138:[function(require,module,exports){
++'use strict'
+ 
+-    //Read value
+-    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-    gl.viewport(0, 0, width, height)
+-
+-    //General strategy: 3 steps
+-    //  1. render non-transparent objects
+-    //  2. accumulate transparent objects into separate fbo
+-    //  3. composite final scene
+-
+-    //Clear FBO
+-    var clearColor = scene.clearColor
+-    gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3])
+-    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+-    gl.depthMask(true)
+-    gl.colorMask(true, true, true, true)
+-    gl.enable(gl.DEPTH_TEST)
+-    gl.depthFunc(gl.LEQUAL)
+-    gl.disable(gl.BLEND)
+-    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
++exports.uniforms    = runtimeUniforms
++exports.attributes  = runtimeAttributes
+ 
+-    //Render opaque pass
+-    var hasTransparent = false
+-    if(axes.enable) {
+-      hasTransparent = hasTransparent || axes.isTransparent()
+-      axes.draw(cameraParams)
+-    }
+-    spikes.axes = axes
+-    if(selection.object) {
+-      spikes.draw(cameraParams)
+-    }
++var GL_TO_GLSL_TYPES = {
++  'FLOAT':       'float',
++  'FLOAT_VEC2':  'vec2',
++  'FLOAT_VEC3':  'vec3',
++  'FLOAT_VEC4':  'vec4',
++  'INT':         'int',
++  'INT_VEC2':    'ivec2',
++  'INT_VEC3':    'ivec3',
++  'INT_VEC4':    'ivec4',
++  'BOOL':        'bool',
++  'BOOL_VEC2':   'bvec2',
++  'BOOL_VEC3':   'bvec3',
++  'BOOL_VEC4':   'bvec4',
++  'FLOAT_MAT2':  'mat2',
++  'FLOAT_MAT3':  'mat3',
++  'FLOAT_MAT4':  'mat4',
++  'SAMPLER_2D':  'sampler2D',
++  'SAMPLER_CUBE':'samplerCube'
++}
+ 
+-    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
++var GL_TABLE = null
+ 
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
+-      obj.axes = axes
+-      obj.pixelRatio = scene.pixelRatio
+-      if(obj.isOpaque && obj.isOpaque()) {
+-        obj.draw(cameraParams)
+-      }
+-      if(obj.isTransparent && obj.isTransparent()) {
+-        hasTransparent = true
+-      }
++function getType(gl, type) {
++  if(!GL_TABLE) {
++    var typeNames = Object.keys(GL_TO_GLSL_TYPES)
++    GL_TABLE = {}
++    for(var i=0; i<typeNames.length; ++i) {
++      var tn = typeNames[i]
++      GL_TABLE[gl[tn]] = GL_TO_GLSL_TYPES[tn]
+     }
++  }
++  return GL_TABLE[type]
++}
+ 
+-    if(hasTransparent) {
+-      //Render transparent pass
+-      accumBuffer.shape = viewShape
+-      accumBuffer.bind()
+-      gl.clear(gl.DEPTH_BUFFER_BIT)
+-      gl.colorMask(false, false, false, false)
+-      gl.depthMask(true)
+-      gl.depthFunc(gl.LESS)
+-
+-      //Render forward facing objects
+-      if(axes.enable && axes.isTransparent()) {
+-        axes.drawTransparent(cameraParams)
+-      }
+-      for(var i=0; i<numObjs; ++i) {
+-        var obj = objects[i]
+-        if(obj.isOpaque && obj.isOpaque()) {
+-          obj.draw(cameraParams)
++function runtimeUniforms(gl, program) {
++  var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS)
++  var result = []
++  for(var i=0; i<numUniforms; ++i) {
++    var info = gl.getActiveUniform(program, i)
++    if(info) {
++      var type = getType(gl, info.type)
++      if(info.size > 1) {
++        for(var j=0; j<info.size; ++j) {
++          result.push({
++            name: info.name.replace('[0]', '[' + j + ']'),
++            type: type
++          })
+         }
++      } else {
++        result.push({
++          name: info.name,
++          type: type
++        })
+       }
++    }
++  }
++  return result
++}
+ 
+-      //Render transparent pass
+-      gl.enable(gl.BLEND)
+-      gl.blendEquation(gl.FUNC_ADD)
+-      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
+-      gl.colorMask(true, true, true, true)
+-      gl.depthMask(false)
+-      gl.clearColor(0,0,0,0)
+-      gl.clear(gl.COLOR_BUFFER_BIT)
++function runtimeAttributes(gl, program) {
++  var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES)
++  var result = []
++  for(var i=0; i<numAttributes; ++i) {
++    var info = gl.getActiveAttrib(program, i)
++    if(info) {
++      result.push({
++        name: info.name,
++        type: getType(gl, info.type)
++      })
++    }
++  }
++  return result
++}
+ 
+-      if(axes.isTransparent()) {
+-        axes.drawTransparent(cameraParams)
+-      }
++},{}],139:[function(require,module,exports){
++'use strict'
+ 
+-      for(var i=0; i<numObjs; ++i) {
+-        var obj = objects[i]
+-        if(obj.isTransparent && obj.isTransparent()) {
+-          obj.drawTransparent(cameraParams)
+-        }
+-      }
++exports.shader   = getShaderReference
++exports.program  = createProgram
+ 
+-      //Unbind framebuffer
+-      gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++var GLError = require("./GLError")
++var formatCompilerError = require('gl-format-compiler-error');
+ 
+-      //Draw composite pass
+-      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
+-      gl.disable(gl.DEPTH_TEST)
+-      accumShader.bind()
+-      accumBuffer.color[0].bind(0)
+-      accumShader.uniforms.accumBuffer = 0
+-      drawTriangle(gl)
++var weakMap = typeof WeakMap === 'undefined' ? require('weakmap-shim') : WeakMap
++var CACHE = new weakMap()
+ 
+-      //Turn off blending
+-      gl.disable(gl.BLEND)
+-    }
++var SHADER_COUNTER = 0
+ 
+-    //Clear dirty flags
+-    dirty = false
+-    for(var i=0; i<numObjs; ++i) {
+-      objects[i].dirty = false
+-    }
+-  }
++function ShaderReference(id, src, type, shader, programs, count, cache) {
++  this.id       = id
++  this.src      = src
++  this.type     = type
++  this.shader   = shader
++  this.count    = count
++  this.programs = []
++  this.cache    = cache
++}
+ 
++ShaderReference.prototype.dispose = function() {
++  if(--this.count === 0) {
++    var cache    = this.cache
++    var gl       = cache.gl
+ 
+-  //Draw the whole scene
+-  function render() {
+-    if(stopped || scene.contextLost) {
+-      return
++    //Remove program references
++    var programs = this.programs
++    for(var i=0, n=programs.length; i<n; ++i) {
++      var p = cache.programs[programs[i]]
++      if(p) {
++        delete cache.programs[i]
++        gl.deleteProgram(p)
++      }
+     }
+-    requestAnimationFrame(render)
+-    redraw()
+-  }
+-  render()
+ 
+-  //Force redraw of whole scene
+-  scene.redraw = function() {
+-    if(stopped) {
+-      return
+-    }
+-    dirty = true
+-    redraw()
++    //Remove shader reference
++    gl.deleteShader(this.shader)
++    delete cache.shaders[(this.type === gl.FRAGMENT_SHADER)|0][this.src]
+   }
+-
+-  return scene
+ }
+ 
+-},{"./lib/shader":142,"3d-view-controls":143,"a-big-triangle":145,"gl-axes3d":146,"gl-axes3d/properties":156,"gl-fbo":108,"gl-mat4/perspective":123,"gl-select-static":163,"gl-spikes3d":158,"mouse-change":207}],160:[function(require,module,exports){
+-"use strict"
++function ContextCache(gl) {
++  this.gl       = gl
++  this.shaders  = [{}, {}]
++  this.programs = {}
++}
+ 
+-var vectorizeText = require("vectorize-text")
++var proto = ContextCache.prototype
+ 
+-module.exports = getGlyph
++function compileShader(gl, type, src) {
++  var shader = gl.createShader(type)
++  gl.shaderSource(shader, src)
++  gl.compileShader(shader)
++  if(!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
++    var errLog = gl.getShaderInfoLog(shader)
++    try {
++        var fmt = formatCompilerError(errLog, src, type);
++    } catch (e){
++        console.warn('Failed to format compiler error: ' + e);
++        throw new GLError(errLog, 'Error compiling shader:\n' + errLog)
++    }
++    throw new GLError(errLog, fmt.short, fmt.long)
++  }
++  return shader
++}
+ 
+-var GLYPH_CACHE = {}
++proto.getShaderReference = function(type, src) {
++  var gl      = this.gl
++  var shaders = this.shaders[(type === gl.FRAGMENT_SHADER)|0]
++  var shader  = shaders[src]
++  if(!shader || !gl.isShader(shader.shader)) {
++    var shaderObj = compileShader(gl, type, src)
++    shader = shaders[src] = new ShaderReference(
++      SHADER_COUNTER++,
++      src,
++      type,
++      shaderObj,
++      [],
++      1,
++      this)
++  } else {
++    shader.count += 1
++  }
++  return shader
++}
+ 
+-function getGlyph(symbol, font) {
+-  var fontCache = GLYPH_CACHE[font]
+-  if(!fontCache) {
+-    fontCache = GLYPH_CACHE[font] = {}
++function linkProgram(gl, vshader, fshader, attribs, locations) {
++  var program = gl.createProgram()
++  gl.attachShader(program, vshader)
++  gl.attachShader(program, fshader)
++  for(var i=0; i<attribs.length; ++i) {
++    gl.bindAttribLocation(program, locations[i], attribs[i])
+   }
+-  if(symbol in fontCache) {
+-    return fontCache[symbol]
++  gl.linkProgram(program)
++  if(!gl.getProgramParameter(program, gl.LINK_STATUS)) {
++    var errLog = gl.getProgramInfoLog(program)
++    throw new GLError(errLog, 'Error linking program: ' + errLog)
+   }
++  return program
++}
+ 
+-  //Get line and triangle meshes for glyph
+-  var lineSymbol = vectorizeText(symbol, {
+-      textAlign: "center",
+-      textBaseline: "middle",
+-      lineHeight: 1.0,
+-      font: font
+-    }) 
+-  var triSymbol = vectorizeText(symbol, {
+-      triangles: true,
+-      textAlign: "center",
+-      textBaseline: "middle",
+-      lineHeight: 1.0,
+-      font: font
+-    })
++proto.getProgram = function(vref, fref, attribs, locations) {
++  var token = [vref.id, fref.id, attribs.join(':'), locations.join(':')].join('@')
++  var prog  = this.programs[token]
++  if(!prog || !this.gl.isProgram(prog)) {
++    this.programs[token] = prog = linkProgram(
++      this.gl,
++      vref.shader,
++      fref.shader,
++      attribs,
++      locations)
++    vref.programs.push(token)
++    fref.programs.push(token)
++  }
++  return prog
++}
+ 
+-  //Calculate bounding box
+-  var bounds = [[Infinity,Infinity], [-Infinity,-Infinity]]
+-  for(var i=0; i<lineSymbol.positions.length; ++i) {
+-    var p = lineSymbol.positions[i]
+-    for(var j=0; j<2; ++j) {
+-      bounds[0][j] = Math.min(bounds[0][j], p[j])
+-      bounds[1][j] = Math.max(bounds[1][j], p[j])
+-    }
++function getCache(gl) {
++  var ctxCache = CACHE.get(gl)
++  if(!ctxCache) {
++    ctxCache = new ContextCache(gl)
++    CACHE.set(gl, ctxCache)
+   }
++  return ctxCache
++}
+ 
+-  //Save cached symbol
+-  return fontCache[symbol] = [triSymbol, lineSymbol, bounds]
++function getShaderReference(gl, type, src) {
++  return getCache(gl).getShaderReference(type, src)
+ }
+-},{"vectorize-text":244}],161:[function(require,module,exports){
+-var createShaderWrapper = require('gl-shader')
+ 
++function createProgram(gl, vref, fref, attribs, locations) {
++  return getCache(gl).getProgram(vref, fref, attribs, locations)
++}
+ 
+-var perspectiveVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\n\nuniform vec4 highlightId;\nuniform float highlightScale;\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   || \n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = 1.0;\n    if(distance(highlightId, id) < 0.0001) {\n      scale = highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1);\n    vec4 viewPosition = view * worldPosition;\n    viewPosition = viewPosition / viewPosition.w;\n    vec4 clipPosition = projection * (viewPosition + scale * vec4(glyph.x, -glyph.y, 0, 0));\n    \n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
+-var orthographicVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float highlightScale, pixelRatio;\nuniform vec4 highlightId;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = pixelRatio;\n    if(distance(highlightId.bgr, id.bgr) < 0.001) {\n      scale *= highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1.0);\n    vec4 viewPosition = view * worldPosition;\n    vec4 clipPosition = projection * viewPosition;\n    clipPosition /= clipPosition.w;\n    \n    gl_Position = clipPosition + vec4(screenSize * scale * vec2(glyph.x, -glyph.y), 0.0, 0.0);\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
+-var projectionVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform float highlightScale;\nuniform vec4 highlightId;\nuniform vec3 axes[2];\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float scale, pixelRatio;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   ||\n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float lscale = pixelRatio * scale;\n    if(distance(highlightId, id) < 0.0001) {\n      lscale *= highlightScale;\n    }\n\n    vec4 clipCenter   = projection * view * model * vec4(position, 1);\n    vec3 dataPosition = position + 0.5*lscale*(axes[0] * glyph.x + axes[1] * glyph.y) * clipCenter.w * screenSize.y;\n    vec4 clipPosition = projection * view * model * vec4(dataPosition, 1);\n\n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = dataPosition;\n  }\n}\n"
+-var drawFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float opacity;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   ||\n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = interpColor * opacity;\n  }\n}\n"
+-var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float pickGroup;\n\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   || \n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = vec4(pickGroup, pickId.bgr);\n  }\n}"
++},{"./GLError":134,"gl-format-compiler-error":100,"weakmap-shim":254}],140:[function(require,module,exports){
++'use strict'
+ 
+-var ATTRIBUTES = [
+-  {name: 'position', type: 'vec3'},
+-  {name: 'color', type: 'vec4'},
+-  {name: 'glyph', type: 'vec2'},
+-  {name: 'id', type: 'vec4'}
+-]
+ 
+-var perspective = {
+-    vertex: perspectiveVertSrc,
+-    fragment: drawFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  ortho = {
+-    vertex: orthographicVertSrc,
+-    fragment: drawFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  project = {
+-    vertex: projectionVertSrc,
+-    fragment: drawFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  pickPerspective = {
+-    vertex: perspectiveVertSrc,
+-    fragment: pickFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  pickOrtho = {
+-    vertex: orthographicVertSrc,
+-    fragment: pickFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  pickProject = {
+-    vertex: projectionVertSrc,
+-    fragment: pickFragSrc,
+-    attributes: ATTRIBUTES
+-  }
++var createShader = require('gl-shader')
+ 
+-function createShader(gl, src) {
+-  var shader = createShaderWrapper(gl, src)
+-  var attr = shader.attributes
+-  attr.position.location = 0
+-  attr.color.location = 1
+-  attr.glyph.location = 2
+-  attr.id.location = 3
+-  return shader
+-}
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, color;\nattribute float weight;\n\nuniform mat4 model, view, projection;\nuniform vec3 coordinates[3];\nuniform vec4 colors[3];\nuniform vec2 screenShape;\nuniform float lineWidth;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vertexPosition = mix(coordinates[0],\n    mix(coordinates[2], coordinates[1], 0.5 * (position + 1.0)), abs(position));\n\n  vec4 clipPos = projection * view * model * vec4(vertexPosition, 1.0);\n  vec2 clipOffset = (projection * view * model * vec4(color, 0.0)).xy;\n  vec2 delta = weight * clipOffset * screenShape;\n  vec2 lineOffset = normalize(vec2(delta.y, -delta.x)) / screenShape;\n\n  gl_Position   = vec4(clipPos.xy + clipPos.w * 0.5 * lineWidth * lineOffset, clipPos.z, clipPos.w);\n  fragColor     = color.x * colors[0] + color.y * colors[1] + color.z * colors[2];\n}\n"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragColor;\n\nvoid main() {\n  gl_FragColor = fragColor;\n}"
+ 
+-exports.createPerspective = function(gl) {
+-  return createShader(gl, perspective)
+-}
+-exports.createOrtho = function(gl) {
+-  return createShader(gl, ortho)
+-}
+-exports.createProject = function(gl) {
+-  return createShader(gl, project)
+-}
+-exports.createPickPerspective = function(gl) {
+-  return createShader(gl, pickPerspective)
+-}
+-exports.createPickOrtho = function(gl) {
+-  return createShader(gl, pickOrtho)
+-}
+-exports.createPickProject = function(gl) {
+-  return createShader(gl, pickProject)
++module.exports = function(gl) {
++  return createShader(gl, vertSrc, fragSrc, null, [
++    {name: 'position', type: 'vec3'},
++    {name: 'color', type: 'vec3'},
++    {name: 'weight', type: 'float'}
++  ])
+ }
+ 
+-},{"gl-shader":164}],162:[function(require,module,exports){
++},{"gl-shader":133}],141:[function(require,module,exports){
+ 'use strict'
+ 
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var pool          = require('typedarray-pool')
+-var mat4mult      = require('gl-mat4/multiply')
+-var shaders       = require('./lib/shaders')
+-var getGlyph      = require('./lib/glyphs')
++var createBuffer = require('gl-buffer')
++var createVAO = require('gl-vao')
++var createShader = require('./shaders/index')
+ 
+-var IDENTITY = [1,0,0,0,
++module.exports = createSpikes
++
++var identity = [1,0,0,0,
+                 0,1,0,0,
+                 0,0,1,0,
+                 0,0,0,1]
+ 
+-module.exports = createPointCloud
+-
+-function transformMat4(x, m) {
+-  var x0 = x[0]
+-  var x1 = x[1]
+-  var x2 = x[2]
+-  var x3 = x[3]
+-  x[0] = m[0] * x0 + m[4] * x1 + m[8]  * x2 + m[12] * x3
+-  x[1] = m[1] * x0 + m[5] * x1 + m[9]  * x2 + m[13] * x3
+-  x[2] = m[2] * x0 + m[6] * x1 + m[10] * x2 + m[14] * x3
+-  x[3] = m[3] * x0 + m[7] * x1 + m[11] * x2 + m[15] * x3
+-  return x
++function AxisSpikes(gl, buffer, vao, shader) {
++  this.gl         = gl
++  this.buffer     = buffer
++  this.vao        = vao
++  this.shader     = shader
++  this.pixelRatio = 1
++  this.bounds     = [[-1000,-1000,-1000], [1000,1000,1000]]
++  this.position   = [0,0,0]
++  this.lineWidth  = [2,2,2]
++  this.colors     = [[0,0,0,1], [0,0,0,1], [0,0,0,1]]
++  this.enabled    = [true,true,true]
++  this.drawSides  = [true,true,true]
++  this.axes       = null
+ }
+ 
+-function project(p, v, m, x) {
+-  transformMat4(x, x, m)
+-  transformMat4(x, x, v)
+-  return transformMat4(x, x, p)
++var proto = AxisSpikes.prototype
++
++var OUTER_FACE = [0,0,0]
++var INNER_FACE = [0,0,0]
++
++var SHAPE = [0,0]
++
++proto.isTransparent = function() {
++  return false
+ }
+ 
+-function clampVec(v) {
+-  var result = new Array(3)
++proto.drawTransparent = function(camera) {}
++
++proto.draw = function(camera) {
++  var gl = this.gl
++  var vao = this.vao
++  var shader = this.shader
++
++  vao.bind()
++  shader.bind()
++
++  var model      = camera.model || identity
++  var view       = camera.view || identity
++  var projection = camera.projection || identity
++
++  var axis
++  if(this.axes) {
++    axis = this.axes.lastCubeProps.axis
++  }
++
++  var outerFace = OUTER_FACE
++  var innerFace = INNER_FACE
+   for(var i=0; i<3; ++i) {
+-    result[i] = Math.min(Math.max(v[i], -1e8), 1e8)
++    if(axis && axis[i] < 0) {
++      outerFace[i] = this.bounds[0][i]
++      innerFace[i] = this.bounds[1][i]
++    } else {
++      outerFace[i] = this.bounds[1][i]
++      innerFace[i] = this.bounds[0][i]
++    }
+   }
+-  return result
+-}
+ 
+-function ScatterPlotPickResult(index, position) {
+-  this.index = index
+-  this.dataCoordinate = this.position = position
+-}
++  SHAPE[0] = gl.drawingBufferWidth
++  SHAPE[1] = gl.drawingBufferHeight
+ 
+-function PointCloud(
+-  gl,
+-  shader,
+-  orthoShader,
+-  projectShader,
+-  pointBuffer,
+-  colorBuffer,
+-  glyphBuffer,
+-  idBuffer,
+-  vao,
+-  pickPerspectiveShader,
+-  pickOrthoShader,
+-  pickProjectShader) {
++  shader.uniforms.model       = model
++  shader.uniforms.view        = view
++  shader.uniforms.projection  = projection
++  shader.uniforms.coordinates = [this.position, outerFace, innerFace]
++  shader.uniforms.colors      = this.colors
++  shader.uniforms.screenShape = SHAPE
+ 
+-  this.gl              = gl
++  for(var i=0; i<3; ++i) {
++    shader.uniforms.lineWidth = this.lineWidth[i] * this.pixelRatio
++    if(this.enabled[i]) {
++      vao.draw(gl.TRIANGLES, 6, 6*i)
++      if(this.drawSides[i]) {
++        vao.draw(gl.TRIANGLES, 12, 18+12*i)
++      }
++    }
++  }
+ 
+-  this.pixelRatio      = 1
++  vao.unbind()
++}
+ 
+-  this.shader          = shader
+-  this.orthoShader     = orthoShader
+-  this.projectShader   = projectShader
++proto.update = function(options) {
++  if(!options) {
++    return
++  }
++  if("bounds" in options) {
++    this.bounds = options.bounds
++  }
++  if("position" in options) {
++    this.position = options.position
++  }
++  if("lineWidth" in options) {
++    this.lineWidth = options.lineWidth
++  }
++  if("colors" in options) {
++    this.colors = options.colors
++  }
++  if("enabled" in options) {
++    this.enabled = options.enabled
++  }
++  if("drawSides" in options) {
++    this.drawSides = options.drawSides
++  }
++}
+ 
+-  this.pointBuffer     = pointBuffer
+-  this.colorBuffer     = colorBuffer
+-  this.glyphBuffer     = glyphBuffer
+-  this.idBuffer        = idBuffer
+-  this.vao             = vao
+-  this.vertexCount     = 0
+-  this.lineVertexCount = 0
++proto.dispose = function() {
++  this.vao.dispose()
++  this.buffer.dispose()
++  this.shader.dispose()
++}
+ 
+-  this.opacity         = 1.0
+ 
+-  this.lineWidth       = 0
+-  this.projectScale    = [2.0/3.0, 2.0/3.0, 2.0/3.0]
+-  this.projectOpacity  = [1,1,1]
+ 
+-  this.pickId                = 0
+-  this.pickPerspectiveShader = pickPerspectiveShader
+-  this.pickOrthoShader       = pickOrthoShader
+-  this.pickProjectShader     = pickProjectShader
+-  this.points                = []
++function createSpikes(gl, options) {
++  //Create buffers
++  var data = [ ]
+ 
+-  this._selectResult = new ScatterPlotPickResult(0, [0,0,0])
++  function line(x,y,z,i,l,h) {
++    var row = [x,y,z,  0,0,0,  1]
++    row[i+3] = 1
++    row[i] = l
++    data.push.apply(data, row)
++    row[6] = -1
++    data.push.apply(data, row)
++    row[i] = h
++    data.push.apply(data, row)
++    data.push.apply(data, row)
++    row[6] = 1
++    data.push.apply(data, row)
++    row[i] = l
++    data.push.apply(data, row)
++  }
+ 
+-  this.useOrtho = true
+-  this.bounds   = [[ Infinity,Infinity,Infinity],
+-                   [-Infinity,-Infinity,-Infinity]]
++  line(0,0,0, 0, 0, 1)
++  line(0,0,0, 1, 0, 1)
++  line(0,0,0, 2, 0, 1)
+ 
+-  //Axes projections
+-  this.axesProject = [ true, true, true ]
+-  this.axesBounds = [[-Infinity,-Infinity,-Infinity],
+-                     [ Infinity, Infinity, Infinity]]
++  line(1,0,0,  1,  -1,1)
++  line(1,0,0,  2,  -1,1)
+ 
+-  this.highlightId    = [1,1,1,1]
+-  this.highlightScale = 2
++  line(0,1,0,  0,  -1,1)
++  line(0,1,0,  2,  -1,1)
+ 
+-  this.clipBounds = [[-Infinity,-Infinity,-Infinity],
+-                     [ Infinity, Infinity, Infinity]]
++  line(0,0,1,  0,  -1,1)
++  line(0,0,1,  1,  -1,1)
+ 
+-  this.dirty = true
+-}
++  var buffer = createBuffer(gl, data)
++  var vao = createVAO(gl, [{
++    type: gl.FLOAT,
++    buffer: buffer,
++    size: 3,
++    offset: 0,
++    stride: 28
++  }, {
++    type: gl.FLOAT,
++    buffer: buffer,
++    size: 3,
++    offset: 12,
++    stride: 28
++  }, {
++    type: gl.FLOAT,
++    buffer: buffer,
++    size: 1,
++    offset: 24,
++    stride: 28
++  }])
+ 
+-var proto = PointCloud.prototype
++  //Create shader
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location = 1
++  shader.attributes.weight.location = 2
+ 
+-proto.pickSlots = 1
++  //Create spike object
++  var spikes = new AxisSpikes(gl, buffer, vao, shader)
+ 
+-proto.setPickBase = function(pickBase) {
+-  this.pickId = pickBase
+-}
++  //Set parameters
++  spikes.update(options)
+ 
+-proto.isTransparent = function() {
+-  if(this.opacity < 1)  {
+-    return true
+-  }
+-  for(var i=0; i<3; ++i) {
+-    if(this.axesProject[i] && this.projectOpacity[i] < 1) {
+-      return true
+-    }
+-  }
+-  return false
++  //Return resulting object
++  return spikes
+ }
+ 
+-proto.isOpaque = function() {
+-  if(this.opacity >= 1)  {
+-    return true
+-  }
+-  for(var i=0; i<3; ++i) {
+-    if(this.axesProject[i] && this.projectOpacity[i] >= 1) {
+-      return true
+-    }
+-  }
+-  return false
+-}
++},{"./shaders/index":140,"gl-buffer":94,"gl-vao":148}],142:[function(require,module,exports){
++var createShader = require('gl-shader')
+ 
+-var VIEW_SHAPE = [0,0]
+-var U_VEC = [0,0,0]
+-var V_VEC = [0,0,0]
+-var MU_VEC = [0,0,0,1]
+-var MV_VEC = [0,0,0,1]
+-var SCRATCH_MATRIX = IDENTITY.slice()
+-var SCRATCH_VEC = [0,0,0]
+-var CLIP_BOUNDS = [[0,0,0], [0,0,0]]
+ 
+-function zeroVec(a) {
+-  a[0] = a[1] = a[2] = 0
+-  return a
+-}
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute vec3 f;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection, inverseModel;\nuniform vec3 lightPosition, eyePosition;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  worldCoordinate = vec3(uv.zw, f.x);\n  vec4 worldPosition = model * vec4(worldCoordinate, 1.0);\n  vec4 clipPosition = projection * view * worldPosition;\n  gl_Position = clipPosition;\n  kill = f.y;\n  value = f.z;\n  planeCoordinate = uv.xy;\n\n  //Lighting geometry parameters\n  vec4 cameraCoordinate = view * worldPosition;\n  cameraCoordinate.xyz /= cameraCoordinate.w;\n  lightDirection = lightPosition - cameraCoordinate.xyz;\n  eyeDirection   = eyePosition - cameraCoordinate.xyz;\n  surfaceNormal  = normalize((vec4(normal,0) * inverseModel).xyz);\n}\n"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat beckmannSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness) {\n  return beckmannDistribution_2_0(dot(surfaceNormal, normalize(lightDirection + viewDirection)), roughness);\n}\n\n\n\nuniform vec3 lowerBound, upperBound;\nuniform float contourTint;\nuniform vec4 contourColor;\nuniform sampler2D colormap;\nuniform vec3 clipBounds[2];\nuniform float roughness, fresnel, kambient, kdiffuse, kspecular, opacity;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(surfaceNormal);\n  vec3 V = normalize(eyeDirection);\n  vec3 L = normalize(lightDirection);\n\n  if(gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = beckmannSpecular_1_1(L, V, N, roughness);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = texture2D(colormap, vec2(value, value));\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = mix(litColor, contourColor, contourTint) * opacity;\n}\n"
++var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute float f;\n\nuniform mat3 permutation;\nuniform mat4 model, view, projection;\nuniform float height, zOffset;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  vec3 dataCoordinate = permutation * vec3(uv.xy, height);\n  vec4 worldPosition = model * vec4(dataCoordinate, 1.0);\n\n  vec4 clipPosition = projection * view * worldPosition;\n  clipPosition.z = clipPosition.z + zOffset;\n\n  gl_Position = clipPosition;\n  value = f;\n  kill = -1.0;\n  worldCoordinate = dataCoordinate;\n  planeCoordinate = uv.zw;\n\n  //Don't do lighting for contours\n  surfaceNormal   = vec3(1,0,0);\n  eyeDirection    = vec3(0,1,0);\n  lightDirection  = vec3(0,0,1);\n}\n"
++var pickSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec2 shape;\nuniform vec3 clipBounds[2];\nuniform float pickId;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 surfaceNormal;\n\nvec2 splitFloat(float v) {\n  float vh = 255.0 * v;\n  float upper = floor(vh);\n  float lower = fract(vh);\n  return vec2(upper / 255.0, floor(lower * 16.0) / 16.0);\n}\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n  vec2 ux = splitFloat(planeCoordinate.x / shape.x);\n  vec2 uy = splitFloat(planeCoordinate.y / shape.y);\n  gl_FragColor = vec4(pickId, ux.x, uy.x, ux.y + (uy.y/16.0));\n}\n"
+ 
+-function augment(hg, af) {
+-  hg[0] = af[0]
+-  hg[1] = af[1]
+-  hg[2] = af[2]
+-  hg[3] = 1
+-  return hg
++exports.createShader = function (gl) {
++  var shader = createShader(gl, vertSrc, fragSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'vec3'},
++    {name: 'normal', type: 'vec3'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  shader.attributes.normal.location = 2
++  return shader
+ }
+-
+-function setComponent(out, v, i, x) {
+-  out[0] = v[0]
+-  out[1] = v[1]
+-  out[2] = v[2]
+-  out[i] = x
+-  return out
++exports.createPickShader = function (gl) {
++  var shader = createShader(gl, vertSrc, pickSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'vec3'},
++    {name: 'normal', type: 'vec3'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  shader.attributes.normal.location = 2
++  return shader
+ }
+-
+-function getClipBounds(bounds) {
+-  var result = CLIP_BOUNDS
+-  for(var i=0; i<2; ++i) {
+-    for(var j=0; j<3; ++j) {
+-      result[i][j] = Math.max(Math.min(bounds[i][j], 1e8), -1e8)
+-    }
+-  }
+-  return result
++exports.createContourShader = function (gl) {
++  var shader = createShader(gl, contourVertSrc, fragSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'float'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  return shader
++}
++exports.createPickContourShader = function (gl) {
++  var shader = createShader(gl, contourVertSrc, pickSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'float'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  return shader
+ }
+ 
+-function drawProject(shader, points, camera, transparent, forceDraw) {
+-  var axesProject = points.axesProject
+-
+-  var gl         = points.gl
+-  var uniforms   = shader.uniforms
+-  var model      = camera.model      || IDENTITY
+-  var view       = camera.view       || IDENTITY
+-  var projection = camera.projection || IDENTITY
+-  var bounds     = points.axesBounds
+-  var clipBounds = getClipBounds(points.clipBounds)
++},{"gl-shader":133}],143:[function(require,module,exports){
++'use strict'
+ 
+-  var cubeAxis
+-  if(points.axes) {
+-    cubeAxis = points.axes.lastCubeProps.axis
+-  } else {
+-    cubeAxis = [1,1,1]
+-  }
++module.exports = createSurfacePlot
+ 
+-  VIEW_SHAPE[0] = 2.0/gl.drawingBufferWidth
+-  VIEW_SHAPE[1] = 2.0/gl.drawingBufferHeight
++var bits = require('bit-twiddle')
++var createBuffer = require('gl-buffer')
++var createVAO = require('gl-vao')
++var createTexture = require('gl-texture2d')
++var pool = require('typedarray-pool')
++var colormap = require('colormap')
++var ops = require('ndarray-ops')
++var pack = require('ndarray-pack')
++var ndarray = require('ndarray')
++var surfaceNets = require('surface-nets')
++var multiply = require('gl-mat4/multiply')
++var invert = require('gl-mat4/invert')
++var bsearch = require('binary-search-bounds')
++var gradient = require('ndarray-gradient')
++var shaders = require('./lib/shaders')
+ 
+-  shader.bind()
+-  uniforms.view           = view
+-  uniforms.projection     = projection
+-  uniforms.screenSize     = VIEW_SHAPE
+-  uniforms.highlightId    = points.highlightId
+-  uniforms.highlightScale = points.highlightScale
+-  uniforms.clipBounds     = clipBounds
+-  uniforms.pickGroup      = points.pickId / 255.0
+-  uniforms.pixelRatio     = points.pixelRatio
++var createShader = shaders.createShader
++var createContourShader = shaders.createContourShader
++var createPickShader = shaders.createPickShader
++var createPickContourShader = shaders.createPickContourShader
+ 
+-  for(var i=0; i<3; ++i) {
+-    if(!axesProject[i]) {
+-      continue
+-    }
+-    if((points.projectOpacity[i] < 1) !== transparent) {
+-      continue
+-    }
++var SURFACE_VERTEX_SIZE = 4 * (4 + 3 + 3)
+ 
+-    uniforms.scale          = points.projectScale[i]
+-    uniforms.opacity        = points.projectOpacity[i]
++var IDENTITY = [
++  1, 0, 0, 0,
++  0, 1, 0, 0,
++  0, 0, 1, 0,
++  0, 0, 0, 1 ]
+ 
+-    //Project model matrix
+-    var pmodel = SCRATCH_MATRIX
+-    for(var j=0; j<16; ++j) {
+-      pmodel[j] = 0
+-    }
+-    for(var j=0; j<4; ++j) {
+-      pmodel[5*j] = 1
+-    }
+-    pmodel[5*i] = 0
+-    if(cubeAxis[i] < 0) {
+-      pmodel[12+i] = bounds[0][i]
+-    } else {
+-      pmodel[12+i] = bounds[1][i]
+-    }
+-    mat4mult(pmodel, model, pmodel)
+-    uniforms.model = pmodel
++var QUAD = [
++  [0, 0],
++  [0, 1],
++  [1, 0],
++  [1, 1],
++  [1, 0],
++  [0, 1]
++]
+ 
+-    //Compute initial axes
+-    var u = (i+1)%3
+-    var v = (i+2)%3
+-    var du = zeroVec(U_VEC)
+-    var dv = zeroVec(V_VEC)
+-    du[u] = 1
+-    dv[v] = 1
++var PERMUTATIONS = [
++  [0, 0, 0, 0, 0, 0, 0, 0, 0],
++  [0, 0, 0, 0, 0, 0, 0, 0, 0],
++  [0, 0, 0, 0, 0, 0, 0, 0, 0]
++]
+ 
+-    //Align orientation relative to viewer
+-    var mdu = project(projection, view, model, augment(MU_VEC, du))
+-    var mdv = project(projection, view, model, augment(MV_VEC, dv))
+-    if(Math.abs(mdu[1]) > Math.abs(mdv[1])) {
+-      var tmp = mdu
+-      mdu = mdv
+-      mdv = tmp
+-      tmp = du
+-      du = dv
+-      dv = tmp
+-      var t = u
+-      u = v
+-      v = t
+-    }
+-    if(mdu[0] < 0) {
+-      du[u] = -1
+-    }
+-    if(mdv[1] > 0) {
+-      dv[v] = -1
+-    }
+-    var su = 0.0
+-    var sv = 0.0
+-    for(var j=0; j<4; ++j) {
+-      su += Math.pow(model[4*u+j], 2)
+-      sv += Math.pow(model[4*v+j], 2)
+-    }
+-    du[u] /= Math.sqrt(su)
+-    dv[v] /= Math.sqrt(sv)
+-    uniforms.axes[0] = du
+-    uniforms.axes[1] = dv
++;(function () {
++  for (var i = 0; i < 3; ++i) {
++    var p = PERMUTATIONS[i]
++    var u = (i + 1) % 3
++    var v = (i + 2) % 3
++    p[u + 0] = 1
++    p[v + 3] = 1
++    p[i + 6] = 1
++  }
++})()
+ 
+-    //Update fragment clip bounds
+-    uniforms.fragClipBounds[0] = setComponent(SCRATCH_VEC, clipBounds[0], i, -1e8)
+-    uniforms.fragClipBounds[1] = setComponent(SCRATCH_VEC, clipBounds[1], i, 1e8)
++function SurfacePickResult (position, index, uv, level, dataCoordinate) {
++  this.position = position
++  this.index = index
++  this.uv = uv
++  this.level = level
++  this.dataCoordinate = dataCoordinate
++}
+ 
+-    //Draw interior
+-    points.vao.draw(gl.TRIANGLES, points.vertexCount)
++var N_COLORS = 265
+ 
+-    //Draw edges
+-    if(points.lineWidth > 0) {
+-      gl.lineWidth(points.lineWidth)
+-      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
+-    }
+-  }
++function genColormap (name) {
++  var x = pack([colormap({
++    colormap: name,
++    nshades: N_COLORS,
++    format: 'rgba'
++  }).map(function (c) {
++    return [c[0], c[1], c[2], 255 * c[3]]
++  })])
++  ops.divseq(x, 255.0)
++  return x
+ }
+ 
++function SurfacePlot (
++  gl,
++  shape,
++  bounds,
++  shader,
++  pickShader,
++  coordinates,
++  vao,
++  colorMap,
++  contourShader,
++  contourPickShader,
++  contourBuffer,
++  contourVAO,
++  dynamicBuffer,
++  dynamicVAO) {
++  this.gl = gl
++  this.shape = shape
++  this.bounds = bounds
++  this.intensityBounds = [];
+ 
+-var NEG_INFINITY3 = [-1e8, -1e8, -1e8]
+-var POS_INFINITY3 = [1e8, 1e8, 1e8]
+-var CLIP_GROUP    = [NEG_INFINITY3, POS_INFINITY3]
++  this._shader = shader
++  this._pickShader = pickShader
++  this._coordinateBuffer = coordinates
++  this._vao = vao
++  this._colorMap = colorMap
+ 
+-function drawFull(shader, pshader, points, camera, transparent, forceDraw) {
+-  var gl = points.gl
++  this._contourShader = contourShader
++  this._contourPickShader = contourPickShader
++  this._contourBuffer = contourBuffer
++  this._contourVAO = contourVAO
++  this._contourOffsets = [[], [], []]
++  this._contourCounts = [[], [], []]
++  this._vertexCount = 0
+ 
+-  points.vao.bind()
++  this._pickResult = new SurfacePickResult([0, 0, 0], [0, 0], [0, 0], [0, 0, 0], [0, 0, 0])
+ 
+-  if(transparent === (points.opacity < 1) || forceDraw) {
+-    shader.bind()
+-    var uniforms = shader.uniforms
++  this._dynamicBuffer = dynamicBuffer
++  this._dynamicVAO = dynamicVAO
++  this._dynamicOffsets = [0, 0, 0]
++  this._dynamicCounts = [0, 0, 0]
+ 
+-    uniforms.model      = camera.model      || IDENTITY
+-    uniforms.view       = camera.view       || IDENTITY
+-    uniforms.projection = camera.projection || IDENTITY
++  this.contourWidth = [ 1, 1, 1 ]
++  this.contourLevels = [[1], [1], [1]]
++  this.contourTint = [0, 0, 0]
++  this.contourColor = [[0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1]]
+ 
+-    VIEW_SHAPE[0]       = 2.0/gl.drawingBufferWidth
+-    VIEW_SHAPE[1]       = 2.0/gl.drawingBufferHeight
+-    uniforms.screenSize = VIEW_SHAPE
++  this.showContour = true
++  this.showSurface = true
+ 
+-    uniforms.highlightId    = points.highlightId
+-    uniforms.highlightScale = points.highlightScale
++  this.enableHighlight = [true, true, true]
++  this.highlightColor = [[0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1]]
++  this.highlightTint = [ 1, 1, 1 ]
++  this.highlightLevel = [-1, -1, -1]
+ 
+-    uniforms.fragClipBounds = CLIP_GROUP
+-    uniforms.clipBounds     = points.axes.bounds
++  // Dynamic contour options
++  this.enableDynamic = [ true, true, true ]
++  this.dynamicLevel = [ NaN, NaN, NaN ]
++  this.dynamicColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ]
++  this.dynamicTint = [ 1, 1, 1 ]
++  this.dynamicWidth = [ 1, 1, 1 ]
+ 
+-    uniforms.opacity    = points.opacity
+-    uniforms.pickGroup  = points.pickId / 255.0
++  this.axesBounds = [[Infinity, Infinity, Infinity], [-Infinity, -Infinity, -Infinity]]
++  this.surfaceProject = [ false, false, false ]
++  this.contourProject = [[ false, false, false ],
++    [ false, false, false ],
++    [ false, false, false ]]
+ 
+-    uniforms.pixelRatio = points.pixelRatio
++  this.colorBounds = [ false, false ]
+ 
+-    //Draw interior
+-    points.vao.draw(gl.TRIANGLES, points.vertexCount)
++  // Store xyz fields, need this for picking
++  this._field = [
++    ndarray(pool.mallocFloat(1024), [0, 0]),
++    ndarray(pool.mallocFloat(1024), [0, 0]),
++    ndarray(pool.mallocFloat(1024), [0, 0]) ]
+ 
+-    //Draw edges
+-    if(points.lineWidth > 0) {
+-      gl.lineWidth(points.lineWidth)
+-      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
+-    }
+-  }
++  this.pickId = 1
++  this.clipBounds = [[-Infinity, -Infinity, -Infinity], [Infinity, Infinity, Infinity]]
+ 
+-  drawProject(pshader, points, camera, transparent, forceDraw)
++  this.snapToData = false
+ 
+-  points.vao.unbind()
+-}
++  this.opacity = 1.0
+ 
+-proto.draw = function(camera) {
+-  var shader = this.useOrtho ? this.orthoShader : this.shader
+-  drawFull(shader, this.projectShader, this, camera, false, false)
+-}
++  this.lightPosition = [10, 10000, 0]
++  this.ambientLight = 0.8
++  this.diffuseLight = 0.8
++  this.specularLight = 2.0
++  this.roughness = 0.5
++  this.fresnel = 1.5
+ 
+-proto.drawTransparent = function(camera) {
+-  var shader = this.useOrtho ? this.orthoShader : this.shader
+-  drawFull(shader, this.projectShader, this, camera, true, false)
++  this.dirty = true
+ }
+ 
+-proto.drawPick = function(camera) {
+-  var shader = this.useOrtho ? this.pickOrthoShader : this.pickPerspectiveShader
+-  drawFull(shader, this.pickProjectShader, this, camera, false, true)
++var proto = SurfacePlot.prototype
++
++proto.isTransparent = function () {
++  return this.opacity < 1
+ }
+ 
+-proto.pick = function(selected) {
+-  if(!selected) {
+-    return null
+-  }
+-  if(selected.id !== this.pickId) {
+-    return null
++proto.isOpaque = function () {
++  if (this.opacity >= 1) {
++    return true
+   }
+-  var x = selected.value[2] + (selected.value[1]<<8) + (selected.value[0]<<16)
+-  if(x >= this.pointCount || x < 0) {
+-    return null
++  for (var i = 0; i < 3; ++i) {
++    if (this._contourCounts[i].length > 0 || this._dynamicCounts[i] > 0) {
++      return true
++    }
+   }
++  return false
++}
+ 
+-  //Unpack result
+-  var coord = this.points[x]
+-  var result = this._selectResult
+-  result.index = x
+-  for(var i=0; i<3; ++i) {
+-    result.position[i] = result.dataCoordinate[i] = coord[i]
+-  }
+-  return result
++proto.pickSlots = 1
++
++proto.setPickBase = function (id) {
++  this.pickId = id
+ }
+ 
+-proto.highlight = function(selection) {
+-  if(!selection) {
+-    this.highlightId = [1,1,1,1]
+-  } else {
+-    var pointId = selection.index
+-    var a0 =  pointId     &0xff
+-    var a1 = (pointId>>8) &0xff
+-    var a2 = (pointId>>16)&0xff
+-    this.highlightId = [a0/255.0, a1/255.0, a2/255.0, 0]
+-  }
++var ZERO_VEC = [0, 0, 0]
++
++var PROJECT_DATA = {
++  showSurface: false,
++  showContour: false,
++  projections: [IDENTITY.slice(), IDENTITY.slice(), IDENTITY.slice()],
++  clipBounds: [
++    [[0, 0, 0], [0, 0, 0]],
++    [[0, 0, 0], [0, 0, 0]],
++    [[0, 0, 0], [0, 0, 0]]]
+ }
+ 
+-proto.update = function(options) {
++function computeProjectionData (camera, obj) {
++  var i, j, k
+ 
+-  options = options || {}
++  // Compute cube properties
++  var cubeAxis = (obj.axes && obj.axes.lastCubeProps.axis) || ZERO_VEC
+ 
+-  if('perspective' in options) {
+-    this.useOrtho = !options.perspective
+-  }
+-  if('orthographic' in options) {
+-    this.useOrtho = !!options.orthographic
+-  }
+-  if('lineWidth' in options) {
+-    this.lineWidth = options.lineWidth
+-  }
+-  if('project' in options) {
+-    if(Array.isArray(options.project)) {
+-      this.axesProject = options.project
+-    } else {
+-      var v = !!options.project
+-      this.axesProject = [v,v,v]
++  var showSurface = obj.showSurface
++  var showContour = obj.showContour
++
++  for (i = 0; i < 3; ++i) {
++    showSurface = showSurface || obj.surfaceProject[i]
++    for (j = 0; j < 3; ++j) {
++      showContour = showContour || obj.contourProject[i][j]
+     }
+   }
+-  if('projectScale' in options) {
+-    if(Array.isArray(options.projectScale)) {
+-      this.projectScale = options.projectScale.slice()
+-    } else {
+-      var s = +options.projectScale
+-      this.projectScale = [s,s,s]
++
++  for (i = 0; i < 3; ++i) {
++    // Construct projection onto axis
++    var axisSquish = PROJECT_DATA.projections[i]
++    for (j = 0; j < 16; ++j) {
++      axisSquish[j] = 0
+     }
+-  }
+-  if('projectOpacity' in options) {
+-    if(Array.isArray(options.projectOpacity)) {
+-      this.projectOpacity = options.projectOpacity.slice()
+-    } else {
+-      var s = +options.projectOpacity
+-      this.projectOpacity = [s,s,s]
++    for (j = 0; j < 4; ++j) {
++      axisSquish[5 * j] = 1
+     }
+-  }
+-  if('opacity' in options) {
+-    this.opacity = options.opacity
++    axisSquish[5 * i] = 0
++    axisSquish[12 + i] = obj.axesBounds[+(cubeAxis[i] > 0)][i]
++    multiply(axisSquish, camera.model, axisSquish)
++
++    var nclipBounds = PROJECT_DATA.clipBounds[i]
++    for (k = 0; k < 2; ++k) {
++      for (j = 0; j < 3; ++j) {
++        nclipBounds[k][j] = camera.clipBounds[k][j]
++      }
++    }
++    nclipBounds[0][i] = -1e8
++    nclipBounds[1][i] = 1e8
+   }
+ 
+-  //Set dirty flag
+-  this.dirty = true
++  PROJECT_DATA.showSurface = showSurface
++  PROJECT_DATA.showContour = showContour
+ 
+-  //Create new buffers
+-  var points = options.position
+-  if(!points) {
+-    return
+-  }
++  return PROJECT_DATA
++}
+ 
+-  //Text font
+-  var font      = options.font      || 'normal'
+-  var alignment = options.alignment || [0,0]
++var UNIFORMS = {
++  model: IDENTITY,
++  view: IDENTITY,
++  projection: IDENTITY,
++  inverseModel: IDENTITY.slice(),
++  lowerBound: [0, 0, 0],
++  upperBound: [0, 0, 0],
++  colorMap: 0,
++  clipBounds: [[0, 0, 0], [0, 0, 0]],
++  height: 0.0,
++  contourTint: 0,
++  contourColor: [0, 0, 0, 1],
++  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
++  zOffset: -1e-4,
++  kambient: 1,
++  kdiffuse: 1,
++  kspecular: 1,
++  lightPosition: [1000, 1000, 1000],
++  eyePosition: [0, 0, 0],
++  roughness: 1,
++  fresnel: 1,
++  opacity: 1
++}
+ 
+-  //Bounds
+-  var lowerBound = [ Infinity, Infinity, Infinity]
+-  var upperBound = [-Infinity,-Infinity,-Infinity]
++var MATRIX_INVERSE = IDENTITY.slice()
++var DEFAULT_PERM = [1, 0, 0, 0, 1, 0, 0, 0, 1]
+ 
+-  //Unpack options
+-  var glyphs     = options.glyph
+-  var colors     = options.color
+-  var sizes      = options.size
+-  var angles     = options.angle
+-  var lineColors = options.lineColor
++function drawCore (params, transparent) {
++  params = params || {}
++  var gl = this.gl
+ 
+-  //Picking geometry
+-  var pickCounter = 0
++  gl.disable(gl.CULL_FACE)
+ 
+-  //First do pass to compute buffer sizes
+-  var triVertexCount     = 0
+-  var lineVertexCount = 0
++  this._colorMap.bind(0)
+ 
+-  //Count number of points and buffer size
+-  var numPoints   = points.length
++  var uniforms = UNIFORMS
++  uniforms.model = params.model || IDENTITY
++  uniforms.view = params.view || IDENTITY
++  uniforms.projection = params.projection || IDENTITY
++  uniforms.lowerBound = [this.bounds[0][0], this.bounds[0][1], this.colorBounds[0] || this.bounds[0][2]]
++  uniforms.upperBound = [this.bounds[1][0], this.bounds[1][1], this.colorBounds[1] || this.bounds[1][2]]
++  uniforms.contourColor = this.contourColor[0]
+ 
+-count_loop:
+-  for(var i=0; i<numPoints; ++i) {
+-    var x = points[i]
+-    for(var j=0; j<3; ++j) {
+-      if(isNaN(x[j]) || !isFinite(x[j])) {
+-        continue count_loop
+-      }
+-    }
++  uniforms.inverseModel = invert(uniforms.inverseModel, uniforms.model)
+ 
+-    var glyphData
+-    if(Array.isArray(glyphs)) {
+-      glyphData = getGlyph(glyphs[i], font)
+-    } else if(glyphs) {
+-      glyphData = getGlyph(glyphs, font)
+-    } else {
+-      glyphData = getGlyph('●', font)
++  for (var i = 0; i < 2; ++i) {
++    var clipClamped = uniforms.clipBounds[i]
++    for (var j = 0; j < 3; ++j) {
++      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
+     }
+-    var glyphMesh   = glyphData[0]
+-    var glyphLines  = glyphData[1]
+-    var glyphBounds = glyphData[2]
+-
+-    triVertexCount  += glyphMesh.cells.length * 3
+-    lineVertexCount += glyphLines.edges.length * 2
+   }
+ 
++  uniforms.kambient = this.ambientLight
++  uniforms.kdiffuse = this.diffuseLight
++  uniforms.kspecular = this.specularLight
+ 
+-  //Preallocate data
+-  var vertexCount   = triVertexCount + lineVertexCount
+-  var positionArray = pool.mallocFloat(3*vertexCount)
+-  var colorArray    = pool.mallocFloat(4*vertexCount)
+-  var glyphArray    = pool.mallocFloat(2*vertexCount)
+-  var idArray       = pool.mallocUint32(vertexCount)
+-
+-  var textOffset = [0,alignment[1]]
++  uniforms.roughness = this.roughness
++  uniforms.fresnel = this.fresnel
++  uniforms.opacity = this.opacity
+ 
+-  var triOffset  = 0
+-  var lineOffset = triVertexCount
+-  var color      = [0,0,0,1]
+-  var lineColor  = [0,0,0,1]
++  uniforms.height = 0.0
++  uniforms.permutation = DEFAULT_PERM
+ 
+-  var isColorArray      = Array.isArray(colors)     && Array.isArray(colors[0])
+-  var isLineColorArray  = Array.isArray(lineColors) && Array.isArray(lineColors[0])
++  // Compute camera matrix inverse
++  var invCameraMatrix = MATRIX_INVERSE
++  multiply(invCameraMatrix, uniforms.view, uniforms.model)
++  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
++  invert(invCameraMatrix, invCameraMatrix)
+ 
+-fill_loop:
+-  for(var i=0; i<numPoints; ++i) {
+-    var x = points[i]
+-    for(var j=0; j<3; ++j) {
+-      if(isNaN(x[j]) || !isFinite(x[j])) {
+-        pickCounter += 1
+-        continue fill_loop
+-      }
++  for (i = 0; i < 3; ++i) {
++    uniforms.eyePosition[i] = invCameraMatrix[12 + i] / invCameraMatrix[15]
++  }
+ 
+-      upperBound[j] = Math.max(upperBound[j], x[j])
+-      lowerBound[j] = Math.min(lowerBound[j], x[j])
++  var w = invCameraMatrix[15]
++  for (i = 0; i < 3; ++i) {
++    w += this.lightPosition[i] * invCameraMatrix[4 * i + 3]
++  }
++  for (i = 0; i < 3; ++i) {
++    var s = invCameraMatrix[12 + i]
++    for (j = 0; j < 3; ++j) {
++      s += invCameraMatrix[4 * j + i] * this.lightPosition[j]
+     }
++    uniforms.lightPosition[i] = s / w
++  }
+ 
+-    var glyphData
+-    if(Array.isArray(glyphs)) {
+-      glyphData = getGlyph(glyphs[i], font)
+-    } else if(glyphs) {
+-      glyphData = getGlyph(glyphs, font)
+-    } else {
+-      glyphData = getGlyph('●', font)
+-    }
+-    var glyphMesh   = glyphData[0]
+-    var glyphLines  = glyphData[1]
+-    var glyphBounds = glyphData[2]
++  var projectData = computeProjectionData(uniforms, this)
+ 
++  if (projectData.showSurface && (transparent === (this.opacity < 1))) {
++    // Set up uniforms
++    this._shader.bind()
++    this._shader.uniforms = uniforms
+ 
+-    //Get color
+-    if(Array.isArray(colors)) {
+-      var c
+-      if(isColorArray) {
+-        c = colors[i]
+-      } else {
+-        c = colors
+-      }
+-      if(c.length === 3) {
+-        for(var j=0; j<3; ++j) {
+-          color[j] = c[j]
+-        }
+-        color[3] = 1
+-      } else if(c.length === 4) {
+-        for(var j=0; j<4; ++j) {
+-          color[j] = c[j]
+-        }
+-      }
+-    } else {
+-      color[0] = color[1] = color[2] = 0
+-      color[3] = 1
++    // Draw it
++    this._vao.bind()
++
++    if (this.showSurface && this._vertexCount) {
++      this._vao.draw(gl.TRIANGLES, this._vertexCount)
+     }
+ 
+-    //Get lineColor
+-    if(Array.isArray(lineColors)) {
+-      var c
+-      if(isLineColorArray) {
+-        c = lineColors[i]
+-      } else {
+-        c = lineColors
+-      }
+-      if(c.length === 3) {
+-        for(var j=0; j<3; ++j) {
+-          lineColor[j] = c[j]
+-        }
+-        lineColor[j] = 1
+-      } else if(c.length === 4) {
+-        for(var j=0; j<4; ++j) {
+-          lineColor[j] = c[j]
+-        }
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      if (!this.surfaceProject[i] || !this.vertexCount) {
++        continue
+       }
+-    } else {
+-      lineColor[0] = lineColor[1] = lineColor[2] = 0
+-      lineColor[3] = 1
++      this._shader.uniforms.model = projectData.projections[i]
++      this._shader.uniforms.clipBounds = projectData.clipBounds[i]
++      this._vao.draw(gl.TRIANGLES, this._vertexCount)
+     }
+ 
+-    var size = 0.5
+-    if(Array.isArray(sizes)) {
+-      size = +sizes[i]
+-    } else if(sizes) {
+-      size = +sizes
+-    } else if(this.useOrtho) {
+-      size = 12
+-    }
++    this._vao.unbind()
++  }
+ 
+-    var angle = 0
+-    if(Array.isArray(angles)) {
+-      angle = +angles[i]
+-    } else if(angles) {
+-      angle = +angles
+-    }
++  if (projectData.showContour && !transparent) {
++    var shader = this._contourShader
+ 
+-    //Loop through markers and append to buffers
+-    var cos = Math.cos(angle)
+-    var sin = Math.sin(angle)
++    // Don't apply lighting to contours
++    uniforms.kambient = 1.0
++    uniforms.kdiffuse = 0.0
++    uniforms.kspecular = 0.0
++    uniforms.opacity = 1.0
+ 
+-    var x = points[i]
+-    for(var j=0; j<3; ++j) {
+-      upperBound[j] = Math.max(upperBound[j], x[j])
+-      lowerBound[j] = Math.min(lowerBound[j], x[j])
+-    }
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-    //Calculate text offset
+-    if(alignment[0] < 0) {
+-      textOffset[0] = alignment[0]  * (1+glyphBounds[1][0])
+-    } else if(alignment[0] > 0) {
+-      textOffset[0] = -alignment[0] * (1+glyphBounds[0][0])
+-    }
++    // Draw contour lines
++    var vao = this._contourVAO
++    vao.bind()
+ 
+-    //Write out inner marker
+-    var cells = glyphMesh.cells
+-    var verts = glyphMesh.positions
++    // Draw contour levels
++    for (i = 0; i < 3; ++i) {
++      shader.uniforms.permutation = PERMUTATIONS[i]
++      gl.lineWidth(this.contourWidth[i])
+ 
+-    for(var j=0; j<cells.length; ++j) {
+-      var cell = cells[j]
+-      for(var k=0; k<3; ++k) {
+-        for(var l=0; l<3; ++l) {
+-          positionArray[3*triOffset+l] = x[l]
++      for (j = 0; j < this.contourLevels[i].length; ++j) {
++        if (!this._contourCounts[i][j]) {
++          continue
+         }
+-        for(var l=0; l<4; ++l) {
+-          colorArray[4*triOffset+l] = color[l]
++        if (j === this.highlightLevel[i]) {
++          shader.uniforms.contourColor = this.highlightColor[i]
++          shader.uniforms.contourTint = this.highlightTint[i]
++        } else if (j === 0 || (j - 1) === this.highlightLevel[i]) {
++          shader.uniforms.contourColor = this.contourColor[i]
++          shader.uniforms.contourTint = this.contourTint[i]
+         }
+-        idArray[triOffset] = pickCounter
+-        var p = verts[cell[k]]
+-        glyphArray[2*triOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
+-        glyphArray[2*triOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
+-        triOffset += 1
++        shader.uniforms.height = this.contourLevels[i][j]
++        vao.draw(gl.LINES, this._contourCounts[i][j], this._contourOffsets[i][j])
+       }
+     }
+ 
+-    var cells = glyphLines.edges
+-    var verts = glyphLines.positions
+-
+-    for(var j=0; j<cells.length; ++j) {
+-      var cell = cells[j]
+-      for(var k=0; k<2; ++k) {
+-        for(var l=0; l<3; ++l) {
+-          positionArray[3*lineOffset+l] = x[l]
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      shader.uniforms.model = projectData.projections[i]
++      shader.uniforms.clipBounds = projectData.clipBounds[i]
++      for (j = 0; j < 3; ++j) {
++        if (!this.contourProject[i][j]) {
++          continue
+         }
+-        for(var l=0; l<4; ++l) {
+-          colorArray[4*lineOffset+l] = lineColor[l]
++        shader.uniforms.permutation = PERMUTATIONS[j]
++        gl.lineWidth(this.contourWidth[j])
++        for (var k = 0; k < this.contourLevels[j].length; ++k) {
++          if (k === this.highlightLevel[j]) {
++            shader.uniforms.contourColor = this.highlightColor[j]
++            shader.uniforms.contourTint = this.highlightTint[j]
++          } else if (k === 0 || (k - 1) === this.highlightLevel[j]) {
++            shader.uniforms.contourColor = this.contourColor[j]
++            shader.uniforms.contourTint = this.contourTint[j]
++          }
++          shader.uniforms.height = this.contourLevels[j][k]
++          vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
+         }
+-        idArray[lineOffset] = pickCounter
+-        var p = verts[cell[k]]
+-        glyphArray[2*lineOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
+-        glyphArray[2*lineOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
+-        lineOffset += 1
+       }
+     }
+ 
+-    //Increment pickCounter
+-    pickCounter += 1
+-  }
+-
++    // Draw dynamic contours
++    vao = this._dynamicVAO
++    vao.bind()
+ 
+-  //Update vertex counts
+-  this.vertexCount      = triVertexCount
+-  this.lineVertexCount  = lineVertexCount
++    // Draw contour levels
++    for (i = 0; i < 3; ++i) {
++      if (this._dynamicCounts[i] === 0) {
++        continue
++      }
+ 
+-  //Update buffers
+-  this.pointBuffer.update(positionArray)
+-  this.colorBuffer.update(colorArray)
+-  this.glyphBuffer.update(glyphArray)
+-  this.idBuffer.update(new Uint32Array(idArray))
++      shader.uniforms.model = uniforms.model
++      shader.uniforms.clipBounds = uniforms.clipBounds
++      shader.uniforms.permutation = PERMUTATIONS[i]
++      gl.lineWidth(this.dynamicWidth[i])
+ 
+-  pool.free(positionArray)
+-  pool.free(colorArray)
+-  pool.free(glyphArray)
+-  pool.free(idArray)
++      shader.uniforms.contourColor = this.dynamicColor[i]
++      shader.uniforms.contourTint = this.dynamicTint[i]
++      shader.uniforms.height = this.dynamicLevel[i]
++      vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
+ 
+-  //Update bounds
+-  this.bounds = [lowerBound, upperBound]
++      for (j = 0; j < 3; ++j) {
++        if (!this.contourProject[j][i]) {
++          continue
++        }
+ 
+-  //Save points
+-  this.points = points
++        shader.uniforms.model = projectData.projections[j]
++        shader.uniforms.clipBounds = projectData.clipBounds[j]
++        vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
++      }
++    }
+ 
+-  //Save number of points
+-  this.pointCount = points.length
++    vao.unbind()
++  }
+ }
+ 
+-proto.dispose = function() {
+-  //Shaders
+-  this.shader.dispose()
+-  this.orthoShader.dispose()
+-  this.pickPerspectiveShader.dispose()
+-  this.pickOrthoShader.dispose()
++proto.draw = function (params) {
++  return drawCore.call(this, params, false)
++}
+ 
+-  //Vertex array
+-  this.vao.dispose()
++proto.drawTransparent = function (params) {
++  return drawCore.call(this, params, true)
++}
+ 
+-  //Buffers
+-  this.pointBuffer.dispose()
+-  this.colorBuffer.dispose()
+-  this.glyphBuffer.dispose()
+-  this.idBuffer.dispose()
++var PICK_UNIFORMS = {
++  model: IDENTITY,
++  view: IDENTITY,
++  projection: IDENTITY,
++  inverseModel: IDENTITY,
++  clipBounds: [[0, 0, 0], [0, 0, 0]],
++  height: 0.0,
++  shape: [0, 0],
++  pickId: 0,
++  lowerBound: [0, 0, 0],
++  upperBound: [0, 0, 0],
++  zOffset: 0.0,
++  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
++  lightPosition: [0, 0, 0],
++  eyePosition: [0, 0, 0]
+ }
+ 
+-function createPointCloud(options) {
+-  var gl = options.gl
++proto.drawPick = function (params) {
++  params = params || {}
++  var gl = this.gl
++  gl.disable(gl.CULL_FACE)
+ 
+-  var shader                = shaders.createPerspective(gl)
+-  var orthoShader           = shaders.createOrtho(gl)
+-  var projectShader         = shaders.createProject(gl)
+-  var pickPerspectiveShader = shaders.createPickPerspective(gl)
+-  var pickOrthoShader       = shaders.createPickOrtho(gl)
+-  var pickProjectShader     = shaders.createPickProject(gl)
++  var uniforms = PICK_UNIFORMS
++  uniforms.model = params.model || IDENTITY
++  uniforms.view = params.view || IDENTITY
++  uniforms.projection = params.projection || IDENTITY
++  uniforms.shape = this._field[2].shape
++  uniforms.pickId = this.pickId / 255.0
++  uniforms.lowerBound = this.bounds[0]
++  uniforms.upperBound = this.bounds[1]
++  uniforms.permutation = DEFAULT_PERM
+ 
+-  var pointBuffer = createBuffer(gl)
+-  var colorBuffer = createBuffer(gl)
+-  var glyphBuffer = createBuffer(gl)
+-  var idBuffer    = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    {
+-      buffer: pointBuffer,
+-      size: 3,
+-      type: gl.FLOAT
+-    },
+-    {
+-      buffer: colorBuffer,
+-      size: 4,
+-      type: gl.FLOAT
+-    },
+-    {
+-      buffer: glyphBuffer,
+-      size: 2,
+-      type: gl.FLOAT
+-    },
+-    {
+-      buffer: idBuffer,
+-      size: 4,
+-      type: gl.UNSIGNED_BYTE,
+-      normalized: true
++  for (var i = 0; i < 2; ++i) {
++    var clipClamped = uniforms.clipBounds[i]
++    for (var j = 0; j < 3; ++j) {
++      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
+     }
+-  ])
+-
+-  var pointCloud = new PointCloud(
+-    gl,
+-    shader,
+-    orthoShader,
+-    projectShader,
+-    pointBuffer,
+-    colorBuffer,
+-    glyphBuffer,
+-    idBuffer,
+-    vao,
+-    pickPerspectiveShader,
+-    pickOrthoShader,
+-    pickProjectShader)
+-
+-  pointCloud.update(options)
++  }
+ 
+-  return pointCloud
+-}
++  var projectData = computeProjectionData(uniforms, this)
+ 
+-},{"./lib/glyphs":160,"./lib/shaders":161,"gl-buffer":105,"gl-mat4/multiply":122,"gl-vao":192,"typedarray-pool":242}],163:[function(require,module,exports){
+-'use strict'
++  if (projectData.showSurface) {
++    // Set up uniforms
++    this._pickShader.bind()
++    this._pickShader.uniforms = uniforms
+ 
+-module.exports = createSelectBuffer
++    // Draw it
++    this._vao.bind()
++    this._vao.draw(gl.TRIANGLES, this._vertexCount)
+ 
+-var createFBO = require('gl-fbo')
+-var pool      = require('typedarray-pool')
+-var ndarray   = require('ndarray')
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      if (!this.surfaceProject[i]) {
++        continue
++      }
++      this._pickShader.uniforms.model = projectData.projections[i]
++      this._pickShader.uniforms.clipBounds = projectData.clipBounds[i]
++      this._vao.draw(gl.TRIANGLES, this._vertexCount)
++    }
+ 
+-var nextPow2  = require('bit-twiddle').nextPow2
++    this._vao.unbind()
++  }
+ 
+-var selectRange = require('cwise/lib/wrapper')({"args":["array",{"offset":[0,0,1],"array":0},{"offset":[0,0,2],"array":0},{"offset":[0,0,3],"array":0},"scalar","scalar","index"],"pre":{"body":"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"body":{"body":"{if(255>_inline_55_arg0_||255>_inline_55_arg1_||255>_inline_55_arg2_||255>_inline_55_arg3_){var _inline_55_l=_inline_55_arg4_-_inline_55_arg6_[0],_inline_55_a=_inline_55_arg5_-_inline_55_arg6_[1],_inline_55_f=_inline_55_l*_inline_55_l+_inline_55_a*_inline_55_a;_inline_55_f<this_closestD2&&(this_closestD2=_inline_55_f,this_closestX=_inline_55_arg6_[0],this_closestY=_inline_55_arg6_[1])}}","args":[{"name":"_inline_55_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg4_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg5_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_55_arg6_","lvalue":false,"rvalue":true,"count":4}],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":["_inline_55_a","_inline_55_f","_inline_55_l"]},"post":{"body":"{return[this_closestX,this_closestY,this_closestD2]}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
++  if (projectData.showContour) {
++    var shader = this._contourPickShader
+ 
+-function SelectResult(x, y, id, value, distance) {
+-  this.coord = [x, y]
+-  this.id = id
+-  this.value = value
+-  this.distance = distance
+-}
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-function SelectBuffer(gl, fbo, buffer) {
+-  this.gl     = gl
+-  this.fbo    = fbo
+-  this.buffer = buffer
+-  this._readTimeout = null
+-  var self = this
++    var vao = this._contourVAO
++    vao.bind()
+ 
+-  this._readCallback = function() {
+-    if(!self.gl) {
+-      return
++    for (j = 0; j < 3; ++j) {
++      gl.lineWidth(this.contourWidth[j])
++      shader.uniforms.permutation = PERMUTATIONS[j]
++      for (i = 0; i < this.contourLevels[j].length; ++i) {
++        if (this._contourCounts[j][i]) {
++          shader.uniforms.height = this.contourLevels[j][i]
++          vao.draw(gl.LINES, this._contourCounts[j][i], this._contourOffsets[j][i])
++        }
++      }
+     }
+-    fbo.bind()
+-    gl.readPixels(0,0,fbo.shape[0],fbo.shape[1],gl.RGBA,gl.UNSIGNED_BYTE,self.buffer)
+-    self._readTimeout = null
+-  }
+-}
+ 
+-var proto = SelectBuffer.prototype
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      shader.uniforms.model = projectData.projections[i]
++      shader.uniforms.clipBounds = projectData.clipBounds[i]
+ 
+-Object.defineProperty(proto, 'shape', {
+-  get: function() {
+-    if(!this.gl) {
+-      return [0,0]
+-    }
+-    return this.fbo.shape.slice()
+-  },
+-  set: function(v) {
+-    if(!this.gl) {
+-      return
+-    }
+-    this.fbo.shape = v
+-    var c = this.fbo.shape[0]
+-    var r = this.fbo.shape[1]
+-    if(r*c*4 > this.buffer.length) {
+-      pool.free(this.buffer)
+-      var buffer = this.buffer = pool.mallocUint8(nextPow2(r*c*4))
+-      for(var i=0; i<r*c*4; ++i) {
+-        buffer[i] = 0xff
++      for (j = 0; j < 3; ++j) {
++        if (!this.contourProject[i][j]) {
++          continue
++        }
++
++        shader.uniforms.permutation = PERMUTATIONS[j]
++        gl.lineWidth(this.contourWidth[j])
++        for (var k = 0; k < this.contourLevels[j].length; ++k) {
++          if (this._contourCounts[j][k]) {
++            shader.uniforms.height = this.contourLevels[j][k]
++            vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
++          }
++        }
+       }
+     }
+-    return v
+-  }
+-})
+ 
+-proto.begin = function() {
+-  var gl = this.gl
+-  var shape = this.shape
+-  if(!gl) {
+-    return
++    vao.unbind()
+   }
+-
+-  this.fbo.bind()
+-  gl.clearColor(1,1,1,1)
+-  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+ }
+ 
+-proto.end = function() {
+-  var gl = this.gl
+-  if(!gl) {
+-    return
+-  }
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-  if(!this._readTimeout) {
+-    clearTimeout(this._readTimeout)
++proto.pick = function (selection) {
++  if (!selection) {
++    return null
+   }
+-  this._readTimeout = setTimeout(this._readCallback, 1)
+-}
+ 
+-proto.query = function(x, y, radius) {
+-  if(!this.gl) {
++  if (selection.id !== this.pickId) {
+     return null
+   }
+ 
+-  var shape = this.fbo.shape.slice()
++  var shape = this._field[2].shape
+ 
+-  x = x|0
+-  y = y|0
+-  if(typeof radius !== 'number') {
+-    radius = 1.0
+-  }
++  var result = this._pickResult
+ 
+-  var x0 = Math.min(Math.max(x - radius, 0), shape[0])|0
+-  var x1 = Math.min(Math.max(x + radius, 0), shape[0])|0
+-  var y0 = Math.min(Math.max(y - radius, 0), shape[1])|0
+-  var y1 = Math.min(Math.max(y + radius, 0), shape[1])|0
++  // Compute uv coordinate
++  var x = shape[0] * (selection.value[0] + (selection.value[2] >> 4) / 16.0) / 255.0
++  var ix = Math.floor(x)
++  var fx = x - ix
+ 
+-  if(x1 <= x0 || y1 <= y0) {
+-    return null
+-  }
++  var y = shape[1] * (selection.value[1] + (selection.value[2] & 15) / 16.0) / 255.0
++  var iy = Math.floor(y)
++  var fy = y - iy
+ 
+-  var dims   = [x1-x0,y1-y0]
+-  var region = ndarray(
+-    this.buffer,
+-    [dims[0], dims[1], 4],
+-    [4, shape[0]*4, 1],
+-    4*(x0 + shape[0]*y0));
++  ix += 1
++  iy += 1
+ 
+-  var closest = selectRange(region.hi(dims[0],dims[1],1), radius, radius)
+-  var dx = closest[0]
+-  var dy = closest[1]
+-  if(dx < 0 || Math.pow(this.radius, 2) < closest[2]) {
+-    return null
+-  }
++  // Compute xyz coordinate
++  var pos = result.position
++  pos[0] = pos[1] = pos[2] = 0
++  for (var dx = 0; dx < 2; ++dx) {
++    var s = dx ? fx : 1.0 - fx
++    for (var dy = 0; dy < 2; ++dy) {
++      var t = dy ? fy : 1.0 - fy
+ 
+-  var c0 = region.get(dx, dy, 0)
+-  var c1 = region.get(dx, dy, 1)
+-  var c2 = region.get(dx, dy, 2)
+-  var c3 = region.get(dx, dy, 3)
++      var r = ix + dx
++      var c = iy + dy
++      var w = s * t
+ 
+-  return new SelectResult(
+-     (dx + x0)|0,
+-     (dy + y0)|0,
+-     c0,
+-     [c1, c2, c3],
+-     Math.sqrt(closest[2]))
+-}
++      for (var i = 0; i < 3; ++i) {
++        pos[i] += this._field[i].get(r, c) * w
++      }
++    }
++  }
+ 
+-proto.dispose = function() {
+-  if(!this.gl) {
+-    return
++  // Find closest level
++  var levelIndex = this._pickResult.level
++  for (var j = 0; j < 3; ++j) {
++    levelIndex[j] = bsearch.le(this.contourLevels[j], pos[j])
++    if (levelIndex[j] < 0) {
++      if (this.contourLevels[j].length > 0) {
++        levelIndex[j] = 0
++      }
++    } else if (levelIndex[j] < this.contourLevels[j].length - 1) {
++      var a = this.contourLevels[j][levelIndex[j]]
++      var b = this.contourLevels[j][levelIndex[j] + 1]
++      if (Math.abs(a - pos[j]) > Math.abs(b - pos[j])) {
++        levelIndex[j] += 1
++      }
++    }
+   }
+-  this.fbo.dispose()
+-  pool.free(this.buffer)
+-  this.gl = null
+-  if(this._readTimeout) {
+-    clearTimeout(this._readTimeout)
++
++  result.index[0] = fx < 0.5 ? ix : (ix + 1)
++  result.index[1] = fy < 0.5 ? iy : (iy + 1)
++
++  result.uv[0] = x / shape[0]
++  result.uv[1] = y / shape[1]
++
++  for (i = 0; i < 3; ++i) {
++    result.dataCoordinate[i] = this._field[i].get(result.index[0], result.index[1])
+   }
+-}
+ 
+-function createSelectBuffer(gl, shape) {
+-  var fbo = createFBO(gl, shape)
+-  var buffer = pool.mallocUint8(shape[0]*shape[1]*4)
+-  return new SelectBuffer(gl, fbo, buffer)
++  return result
+ }
+ 
+-},{"bit-twiddle":38,"cwise/lib/wrapper":99,"gl-fbo":108,"ndarray":219,"typedarray-pool":242}],164:[function(require,module,exports){
+-'use strict'
+-
+-var createUniformWrapper   = require('./lib/create-uniforms')
+-var createAttributeWrapper = require('./lib/create-attributes')
+-var makeReflect            = require('./lib/reflect')
+-var shaderCache            = require('./lib/shader-cache')
+-var runtime                = require('./lib/runtime-reflect')
+-var GLError                = require("./lib/GLError")
++function padField (nfield, field) {
++  var shape = field.shape.slice()
++  var nshape = nfield.shape.slice()
+ 
+-//Shader object
+-function Shader(gl) {
+-  this.gl         = gl
++  // Center
++  ops.assign(nfield.lo(1, 1).hi(shape[0], shape[1]), field)
+ 
+-  //Default initialize these to null
+-  this._vref      =
+-  this._fref      =
+-  this._relink    =
+-  this.vertShader =
+-  this.fragShader =
+-  this.program    =
+-  this.attributes =
+-  this.uniforms   =
+-  this.types      = null
++  // Edges
++  ops.assign(nfield.lo(1).hi(shape[0], 1),
++    field.hi(shape[0], 1))
++  ops.assign(nfield.lo(1, nshape[1] - 1).hi(shape[0], 1),
++    field.lo(0, shape[1] - 1).hi(shape[0], 1))
++  ops.assign(nfield.lo(0, 1).hi(1, shape[1]),
++    field.hi(1))
++  ops.assign(nfield.lo(nshape[0] - 1, 1).hi(1, shape[1]),
++    field.lo(shape[0] - 1))
++  // Corners
++  nfield.set(0, 0, field.get(0, 0))
++  nfield.set(0, nshape[1] - 1, field.get(0, shape[1] - 1))
++  nfield.set(nshape[0] - 1, 0, field.get(shape[0] - 1, 0))
++  nfield.set(nshape[0] - 1, nshape[1] - 1, field.get(shape[0] - 1, shape[1] - 1))
+ }
+ 
+-var proto = Shader.prototype
+-
+-proto.bind = function() {
+-  if(!this.program) {
+-    this._relink()
++function handleArray (param, ctor) {
++  if (Array.isArray(param)) {
++    return [ ctor(param[0]), ctor(param[1]), ctor(param[2]) ]
+   }
+-  this.gl.useProgram(this.program)
++  return [ ctor(param), ctor(param), ctor(param) ]
+ }
+ 
+-proto.dispose = function() {
+-  if(this._fref) {
+-    this._fref.dispose()
+-  }
+-  if(this._vref) {
+-    this._vref.dispose()
++function toColor (x) {
++  if (Array.isArray(x)) {
++    if (x.length === 3) {
++      return [x[0], x[1], x[2], 1]
++    }
++    return [x[0], x[1], x[2], x[3]]
+   }
+-  this.attributes =
+-  this.types      =
+-  this.vertShader =
+-  this.fragShader =
+-  this.program    =
+-  this._relink    =
+-  this._fref      =
+-  this._vref      = null
++  return [0, 0, 0, 1]
+ }
+ 
+-function compareAttributes(a, b) {
+-  if(a.name < b.name) {
+-    return -1
++function handleColor (param) {
++  if (Array.isArray(param)) {
++    if (Array.isArray(param)) {
++      return [
++        toColor(param[0]),
++        toColor(param[1]),
++        toColor(param[2]) ]
++    } else {
++      var c = toColor(param)
++      return [
++        c.slice(),
++        c.slice(),
++        c.slice() ]
++    }
+   }
+-  return 1
+ }
+ 
+-//Update export hook for glslify-live
+-proto.update = function(
+-    vertSource
+-  , fragSource
+-  , uniforms
+-  , attributes) {
++proto.update = function (params) {
++  params = params || {}
+ 
+-  //If only one object passed, assume glslify style output
+-  if(!fragSource || arguments.length === 1) {
+-    var obj = vertSource
+-    vertSource = obj.vertex
+-    fragSource = obj.fragment
+-    uniforms   = obj.uniforms
+-    attributes = obj.attributes
++  this.dirty = true
++
++  if ('contourWidth' in params) {
++    this.contourWidth = handleArray(params.contourWidth, Number)
++  }
++  if ('showContour' in params) {
++    this.showContour = handleArray(params.showContour, Boolean)
++  }
++  if ('showSurface' in params) {
++    this.showSurface = !!params.showSurface
++  }
++  if ('contourTint' in params) {
++    this.contourTint = handleArray(params.contourTint, Boolean)
++  }
++  if ('contourColor' in params) {
++    this.contourColor = handleColor(params.contourColor)
++  }
++  if ('contourProject' in params) {
++    this.contourProject = handleArray(params.contourProject, function (x) {
++      return handleArray(x, Boolean)
++    })
++  }
++  if ('surfaceProject' in params) {
++    this.surfaceProject = params.surfaceProject
++  }
++  if ('dynamicColor' in params) {
++    this.dynamicColor = handleColor(params.dynamicColor)
++  }
++  if ('dynamicTint' in params) {
++    this.dynamicTint = handleArray(params.dynamicTint, Number)
++  }
++  if ('dynamicWidth' in params) {
++    this.dynamicWidth = handleArray(params.dynamicWidth, Number)
++  }
++  if ('opacity' in params) {
++    this.opacity = params.opacity
++  }
++  if ('colorBounds' in params) {
++    this.colorBounds = params.colorBounds
+   }
+ 
+-  var wrapper = this
+-  var gl      = wrapper.gl
++  var field = params.field || (params.coords && params.coords[2]) || null
++  var levelsChanged = false
+ 
+-  //Compile vertex and fragment shaders
+-  var pvref = wrapper._vref
+-  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
+-  if(pvref) {
+-    pvref.dispose()
+-  }
+-  wrapper.vertShader = wrapper._vref.shader
+-  var pfref = this._fref
+-  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
+-  if(pfref) {
+-    pfref.dispose()
++  if (!field) {
++    if (this._field[2].shape[0] || this._field[2].shape[2]) {
++      field = this._field[2].lo(1, 1).hi(this._field[2].shape[0] - 2, this._field[2].shape[1] - 2)
++    } else {
++      field = this._field[2].hi(0, 0)
++    }
+   }
+-  wrapper.fragShader = wrapper._fref.shader
+ 
+-  //If uniforms/attributes is not specified, use RT reflection
+-  if(!uniforms || !attributes) {
++  // Update field
++  if ('field' in params || 'coords' in params) {
++    var fsize = (field.shape[0] + 2) * (field.shape[1] + 2)
+ 
+-    //Create initial test program
+-    var testProgram = gl.createProgram()
+-    gl.attachShader(testProgram, wrapper.fragShader)
+-    gl.attachShader(testProgram, wrapper.vertShader)
+-    gl.linkProgram(testProgram)
+-    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
+-      var errLog = gl.getProgramInfoLog(testProgram)
+-      throw new GLError(errLog, 'Error linking program:' + errLog)
++    // Resize if necessary
++    if (fsize > this._field[2].data.length) {
++      pool.freeFloat(this._field[2].data)
++      this._field[2].data = pool.mallocFloat(bits.nextPow2(fsize))
+     }
+ 
+-    //Load data from runtime
+-    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
+-    attributes = attributes || runtime.attributes(gl, testProgram)
++    // Pad field
++    this._field[2] = ndarray(this._field[2].data, [field.shape[0] + 2, field.shape[1] + 2])
++    padField(this._field[2], field)
++
++    // Save shape of field
++    this.shape = field.shape.slice()
++    var shape = this.shape
++
++    // Resize coordinate fields if necessary
++    for (var i = 0; i < 2; ++i) {
++      if (this._field[2].size > this._field[i].data.length) {
++        pool.freeFloat(this._field[i].data)
++        this._field[i].data = pool.mallocFloat(this._field[2].size)
++      }
++      this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2])
++    }
++
++    // Generate x/y coordinates
++    if (params.coords) {
++      var coords = params.coords
++      if (!Array.isArray(coords) || coords.length !== 3) {
++        throw new Error('gl-surface: invalid coordinates for x/y')
++      }
++      for (i = 0; i < 2; ++i) {
++        var coord = coords[i]
++        for (j = 0; j < 2; ++j) {
++          if (coord.shape[j] !== shape[j]) {
++            throw new Error('gl-surface: coords have incorrect shape')
++          }
++        }
++        padField(this._field[i], coord)
++      }
++    } else if (params.ticks) {
++      var ticks = params.ticks
++      if (!Array.isArray(ticks) || ticks.length !== 2) {
++        throw new Error('gl-surface: invalid ticks')
++      }
++      for (i = 0; i < 2; ++i) {
++        var tick = ticks[i]
++        if (Array.isArray(tick) || tick.length) {
++          tick = ndarray(tick)
++        }
++        if (tick.shape[0] !== shape[i]) {
++          throw new Error('gl-surface: invalid tick length')
++        }
++        // Make a copy view of the tick array
++        var tick2 = ndarray(tick.data, shape)
++        tick2.stride[i] = tick.stride[0]
++        tick2.stride[i ^ 1] = 0
++
++        // Fill in field array
++        padField(this._field[i], tick2)
++      }
++    } else {
++      for (i = 0; i < 2; ++i) {
++        var offset = [0, 0]
++        offset[i] = 1
++        this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2], offset, 0)
++      }
++      this._field[0].set(0, 0, 0)
++      for (var j = 0; j < shape[0]; ++j) {
++        this._field[0].set(j + 1, 0, j)
++      }
++      this._field[0].set(shape[0] + 1, 0, shape[0] - 1)
++      this._field[1].set(0, 0, 0)
++      for (j = 0; j < shape[1]; ++j) {
++        this._field[1].set(0, j + 1, j)
++      }
++      this._field[1].set(0, shape[1] + 1, shape[1] - 1)
++    }
++
++    // Save shape
++    var fields = this._field
++
++    // Compute surface normals
++    var dfields = ndarray(pool.mallocFloat(fields[2].size * 3 * 2), [3, shape[0] + 2, shape[1] + 2, 2])
++    for (i = 0; i < 3; ++i) {
++      gradient(dfields.pick(i), fields[i], 'mirror')
++    }
++    var normals = ndarray(pool.mallocFloat(fields[2].size * 3), [shape[0] + 2, shape[1] + 2, 3])
++    for (i = 0; i < shape[0] + 2; ++i) {
++      for (j = 0; j < shape[1] + 2; ++j) {
++        var dxdu = dfields.get(0, i, j, 0)
++        var dxdv = dfields.get(0, i, j, 1)
++        var dydu = dfields.get(1, i, j, 0)
++        var dydv = dfields.get(1, i, j, 1)
++        var dzdu = dfields.get(2, i, j, 0)
++        var dzdv = dfields.get(2, i, j, 1)
++
++        var nx = dydu * dzdv - dydv * dzdu
++        var ny = dzdu * dxdv - dzdv * dxdu
++        var nz = dxdu * dydv - dxdv * dydu
++
++        var nl = Math.sqrt(nx * nx + ny * ny + nz * nz)
++        if (nl < 1e-8) {
++          nl = Math.max(Math.abs(nx), Math.abs(ny), Math.abs(nz))
++          if (nl < 1e-8) {
++            nz = 1.0
++            ny = nx = 0.0
++            nl = 1.0
++          } else {
++            nl = 1.0 / nl
++          }
++        } else {
++          nl = 1.0 / Math.sqrt(nl)
++        }
++
++        normals.set(i, j, 0, nx * nl)
++        normals.set(i, j, 1, ny * nl)
++        normals.set(i, j, 2, nz * nl)
++      }
++    }
++    pool.free(dfields.data)
++
++    // Initialize surface
++    var lo = [ Infinity, Infinity, Infinity ]
++    var hi = [ -Infinity, -Infinity, -Infinity ]
++    var lo_intensity = Infinity
++    var hi_intensity = -Infinity
++    var count = (shape[0] - 1) * (shape[1] - 1) * 6
++    var tverts = pool.mallocFloat(bits.nextPow2(10 * count))
++    var tptr = 0
++    var vertexCount = 0
++    for (i = 0; i < shape[0] - 1; ++i) {
++      j_loop:
++      for (j = 0; j < shape[1] - 1; ++j) {
++        // Test for NaNs
++        for (var dx = 0; dx < 2; ++dx) {
++          for (var dy = 0; dy < 2; ++dy) {
++            for (var k = 0; k < 3; ++k) {
++              var f = this._field[k].get(1 + i + dx, 1 + j + dy)
++              if (isNaN(f) || !isFinite(f)) {
++                continue j_loop
++              }
++            }
++          }
++        }
++        for (k = 0; k < 6; ++k) {
++          var r = i + QUAD[k][0]
++          var c = j + QUAD[k][1]
++
++          var tx = this._field[0].get(r + 1, c + 1)
++          var ty = this._field[1].get(r + 1, c + 1)
++          f = this._field[2].get(r + 1, c + 1)
++          var vf = f
++          nx = normals.get(r + 1, c + 1, 0)
++          ny = normals.get(r + 1, c + 1, 1)
++          nz = normals.get(r + 1, c + 1, 2)
++
++          if (params.intensity) {
++            vf = params.intensity.get(r, c)
++          }
+ 
+-    //Release test program
+-    gl.deleteProgram(testProgram)
+-  }
++          tverts[tptr++] = r
++          tverts[tptr++] = c
++          tverts[tptr++] = tx
++          tverts[tptr++] = ty
++          tverts[tptr++] = f
++          tverts[tptr++] = 0
++          tverts[tptr++] = vf
++          tverts[tptr++] = nx
++          tverts[tptr++] = ny
++          tverts[tptr++] = nz
+ 
+-  //Sort attributes lexicographically
+-  // overrides undefined WebGL behavior for attribute locations
+-  attributes = attributes.slice()
+-  attributes.sort(compareAttributes)
++          lo[0] = Math.min(lo[0], tx)
++          lo[1] = Math.min(lo[1], ty)
++          lo[2] = Math.min(lo[2], f)
++          lo_intensity = Math.min(lo_intensity, vf)
+ 
+-  //Convert attribute types, read out locations
+-  var attributeUnpacked  = []
+-  var attributeNames     = []
+-  var attributeLocations = []
+-  for(var i=0; i<attributes.length; ++i) {
+-    var attr = attributes[i]
+-    if(attr.type.indexOf('mat') >= 0) {
+-      var size = attr.type.charAt(attr.type.length-1)|0
+-      var locVector = new Array(size)
+-      for(var j=0; j<size; ++j) {
+-        locVector[j] = attributeLocations.length
+-        attributeNames.push(attr.name + '[' + j + ']')
+-        if(typeof attr.location === 'number') {
+-          attributeLocations.push(attr.location + j)
+-        } else if(Array.isArray(attr.location) &&
+-                  attr.location.length === size &&
+-                  typeof attr.location[j] === 'number') {
+-          attributeLocations.push(attr.location[j]|0)
+-        } else {
+-          attributeLocations.push(-1)
++          hi[0] = Math.max(hi[0], tx)
++          hi[1] = Math.max(hi[1], ty)
++          hi[2] = Math.max(hi[2], f)
++          hi_intensity = Math.max(hi_intensity, vf)
++
++          vertexCount += 1
+         }
+       }
+-      attributeUnpacked.push({
+-        name: attr.name,
+-        type: attr.type,
+-        locations: locVector
+-      })
+-    } else {
+-      attributeUnpacked.push({
+-        name: attr.name,
+-        type: attr.type,
+-        locations: [ attributeLocations.length ]
+-      })
+-      attributeNames.push(attr.name)
+-      if(typeof attr.location === 'number') {
+-        attributeLocations.push(attr.location|0)
+-      } else {
+-        attributeLocations.push(-1)
+-      }
+     }
+-  }
+ 
+-  //For all unspecified attributes, assign them lexicographically min attribute
+-  var curLocation = 0
+-  for(var i=0; i<attributeLocations.length; ++i) {
+-    if(attributeLocations[i] < 0) {
+-      while(attributeLocations.indexOf(curLocation) >= 0) {
+-        curLocation += 1
+-      }
+-      attributeLocations[i] = curLocation
++    if (params.intensityBounds) {
++      lo_intensity = +params.intensityBounds[0]
++      hi_intensity = +params.intensityBounds[1]
+     }
+-  }
+-
+-  //Rebuild program and recompute all uniform locations
+-  var uniformLocations = new Array(uniforms.length)
+-  function relink() {
+-    wrapper.program = shaderCache.program(
+-        gl
+-      , wrapper._vref
+-      , wrapper._fref
+-      , attributeNames
+-      , attributeLocations)
+ 
+-    for(var i=0; i<uniforms.length; ++i) {
+-      uniformLocations[i] = gl.getUniformLocation(
+-          wrapper.program
+-        , uniforms[i].name)
++    // Scale all vertex intensities
++    for (i = 6; i < tptr; i += 10) {
++      tverts[i] = (tverts[i] - lo_intensity) / (hi_intensity - lo_intensity)
+     }
+-  }
+ 
+-  //Perform initial linking, reuse program used for reflection
+-  relink()
++    this._vertexCount = vertexCount
++    this._coordinateBuffer.update(tverts.subarray(0, tptr))
++    pool.freeFloat(tverts)
++    pool.free(normals.data)
+ 
+-  //Save relinking procedure, defer until runtime
+-  wrapper._relink = relink
++    // Update bounds
++    this.bounds = [lo, hi]
+ 
+-  //Generate type info
+-  wrapper.types = {
+-    uniforms:   makeReflect(uniforms),
+-    attributes: makeReflect(attributes)
++    // Save intensity
++    this.intensity = params.intensity || this._field[2]
++
++    if(this.intensityBounds[0] !== lo_intensity || this.intensityBounds[1] !== hi_intensity) {
++        levelsChanged = true
++    }
++
++    // Save intensity bound
++    this.intensityBounds = [lo_intensity, hi_intensity]
+   }
+ 
+-  //Generate attribute wrappers
+-  wrapper.attributes = createAttributeWrapper(
+-      gl
+-    , wrapper
+-    , attributeUnpacked
+-    , attributeLocations)
++  // Update level crossings
++  if ('levels' in params) {
++    var levels = params.levels
++    if (!Array.isArray(levels[0])) {
++      levels = [ [], [], levels ]
++    } else {
++      levels = levels.slice()
++    }
++    for (i = 0; i < 3; ++i) {
++      levels[i] = levels[i].slice()
++      levels.sort(function (a, b) {
++        return a - b
++      })
++    }
++    change_test:
++    for (i = 0; i < 3; ++i) {
++      if (levels[i].length !== this.contourLevels[i].length) {
++        levelsChanged = true
++        break
++      }
++      for (j = 0; j < levels[i].length; ++j) {
++        if (levels[i][j] !== this.contourLevels[i][j]) {
++          levelsChanged = true
++          break change_test
++        }
++      }
++    }
++    this.contourLevels = levels
++  }
+ 
+-  //Generate uniform wrappers
+-  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
+-      gl
+-    , wrapper
+-    , uniforms
+-    , uniformLocations))
+-}
++  if (levelsChanged) {
++    fields = this._field
++    shape = this.shape
+ 
+-//Compiles and links a shader program with the given attribute and vertex list
+-function createShader(
+-    gl
+-  , vertSource
+-  , fragSource
+-  , uniforms
+-  , attributes) {
++    // Update contour lines
++    var contourVerts = []
+ 
+-  var shader = new Shader(gl)
++    for (var dim = 0; dim < 3; ++dim) {
++      levels = this.contourLevels[dim]
++      var levelOffsets = []
++      var levelCounts = []
+ 
+-  shader.update(
+-      vertSource
+-    , fragSource
+-    , uniforms
+-    , attributes)
++      var parts = [0, 0, 0]
+ 
+-  return shader
+-}
++      for (i = 0; i < levels.length; ++i) {
++        var graph = surfaceNets(this._field[dim], levels[i])
++        levelOffsets.push((contourVerts.length / 5) | 0)
++        vertexCount = 0
+ 
+-module.exports = createShader
++        edge_loop:
++        for (j = 0; j < graph.cells.length; ++j) {
++          var e = graph.cells[j]
++          for (k = 0; k < 2; ++k) {
++            var p = graph.positions[e[k]]
+ 
+-},{"./lib/GLError":165,"./lib/create-attributes":166,"./lib/create-uniforms":167,"./lib/reflect":168,"./lib/runtime-reflect":169,"./lib/shader-cache":170}],165:[function(require,module,exports){
+-function GLError (rawError, shortMessage, longMessage) {
+-    this.shortMessage = shortMessage || ''
+-    this.longMessage = longMessage || ''
+-    this.rawError = rawError || ''
+-    this.message =
+-      'gl-shader: ' + (shortMessage || rawError || '') +
+-      (longMessage ? '\n'+longMessage : '')
+-    this.stack = (new Error()).stack
+-}
+-GLError.prototype = new Error
+-GLError.prototype.name = 'GLError'
+-GLError.prototype.constructor = GLError
+-module.exports = GLError
++            var x = p[0]
++            var ix = Math.floor(x) | 0
++            var fx = x - ix
+ 
+-},{}],166:[function(require,module,exports){
+-'use strict'
++            var y = p[1]
++            var iy = Math.floor(y) | 0
++            var fy = y - iy
+ 
+-module.exports = createAttributeWrapper
++            var hole = false
++            dd_loop:
++            for (var dd = 0; dd < 3; ++dd) {
++              parts[dd] = 0.0
++              var iu = (dim + dd + 1) % 3
++              for (dx = 0; dx < 2; ++dx) {
++                var s = dx ? fx : 1.0 - fx
++                r = Math.min(Math.max(ix + dx, 0), shape[0]) | 0
++                for (dy = 0; dy < 2; ++dy) {
++                  var t = dy ? fy : 1.0 - fy
++                  c = Math.min(Math.max(iy + dy, 0), shape[1]) | 0
+ 
+-var GLError = require("./GLError")
++                  if (dd < 2) {
++                    f = this._field[iu].get(r, c)
++                  } else {
++                    f = (this.intensity.get(r, c) - this.intensityBounds[0]) / (this.intensityBounds[1] - this.intensityBounds[0])
++                  }
++                  if (!isFinite(f) || isNaN(f)) {
++                    hole = true
++                    break dd_loop
++                  }
+ 
+-function ShaderAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , constFunc) {
+-  this._gl        = gl
+-  this._wrapper   = wrapper
+-  this._index     = index
+-  this._locations = locations
+-  this._dimension = dimension
+-  this._constFunc = constFunc
+-}
++                  var w = s * t
++                  parts[dd] += w * f
++                }
++              }
++            }
+ 
+-var proto = ShaderAttribute.prototype
++            if (!hole) {
++              contourVerts.push(parts[0], parts[1], p[0], p[1], parts[2])
++              vertexCount += 1
++            } else {
++              if (k > 0) {
++                // If we already added first edge, pop off verts
++                for (var l = 0; l < 5; ++l) {
++                  contourVerts.pop()
++                }
++                vertexCount -= 1
++              }
++              continue edge_loop
++            }
++          }
++        }
++        levelCounts.push(vertexCount)
++      }
+ 
+-proto.pointer = function setAttribPointer(
+-    type
+-  , normalized
+-  , stride
+-  , offset) {
++      // Store results
++      this._contourOffsets[dim] = levelOffsets
++      this._contourCounts[dim] = levelCounts
++    }
+ 
+-  var self      = this
+-  var gl        = self._gl
+-  var location  = self._locations[self._index]
++    var floatBuffer = pool.mallocFloat(contourVerts.length)
++    for (i = 0; i < contourVerts.length; ++i) {
++      floatBuffer[i] = contourVerts[i]
++    }
++    this._contourBuffer.update(floatBuffer)
++    pool.freeFloat(floatBuffer)
++  }
+ 
+-  gl.vertexAttribPointer(
+-      location
+-    , self._dimension
+-    , type || gl.FLOAT
+-    , !!normalized
+-    , stride || 0
+-    , offset || 0)
+-  gl.enableVertexAttribArray(location)
++  if (params.colormap) {
++    this._colorMap.setPixels(genColormap(params.colormap))
++  }
+ }
+ 
+-proto.set = function(x0, x1, x2, x3) {
+-  return this._constFunc(this._locations[this._index], x0, x1, x2, x3)
++proto.dispose = function () {
++  this._shader.dispose()
++  this._vao.dispose()
++  this._coordinateBuffer.dispose()
++  this._colorMap.dispose()
++  this._contourBuffer.dispose()
++  this._contourVAO.dispose()
++  this._contourShader.dispose()
++  this._contourPickShader.dispose()
++  this._dynamicBuffer.dispose()
++  this._dynamicVAO.dispose()
++  for (var i = 0; i < 3; ++i) {
++    pool.freeFloat(this._field[i].data)
++  }
+ }
+ 
+-Object.defineProperty(proto, 'location', {
+-  get: function() {
+-    return this._locations[this._index]
++proto.highlight = function (selection) {
++  if (!selection) {
++    this._dynamicCounts = [0, 0, 0]
++    this.dyanamicLevel = [NaN, NaN, NaN]
++    this.highlightLevel = [-1, -1, -1]
++    return
+   }
+-  , set: function(v) {
+-    if(v !== this._locations[this._index]) {
+-      this._locations[this._index] = v|0
+-      this._wrapper.program = null
++
++  for (var i = 0; i < 3; ++i) {
++    if (this.enableHighlight[i]) {
++      this.highlightLevel[i] = selection.level[i]
++    } else {
++      this.highlightLevel[i] = -1
+     }
+-    return v|0
+   }
+-})
+-
+-//Adds a vector attribute to obj
+-function addVectorAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , obj
+-  , name) {
+ 
+-  //Construct constant function
+-  var constFuncArgs = [ 'gl', 'v' ]
+-  var varNames = []
+-  for(var i=0; i<dimension; ++i) {
+-    constFuncArgs.push('x'+i)
+-    varNames.push('x'+i)
++  var levels
++  if (this.snapToData) {
++    levels = selection.dataCoordinate
++  } else {
++    levels = selection.position
++  }
++  if ((!this.enableDynamic[0] || levels[0] === this.dynamicLevel[0]) &&
++    (!this.enableDynamic[1] || levels[1] === this.dynamicLevel[1]) &&
++    (!this.enableDynamic[2] || levels[2] === this.dynamicLevel[2])) {
++    return
+   }
+-  constFuncArgs.push(
+-    'if(x0.length===void 0){return gl.vertexAttrib' +
+-    dimension + 'f(v,' +
+-    varNames.join() +
+-    ')}else{return gl.vertexAttrib' +
+-    dimension +
+-    'fv(v,x0)}')
+-  var constFunc = Function.apply(null, constFuncArgs)
+ 
+-  //Create attribute wrapper
+-  var attr = new ShaderAttribute(
+-      gl
+-    , wrapper
+-    , index
+-    , locations
+-    , dimension
+-    , constFunc)
++  var vertexCount = 0
++  var shape = this.shape
++  var scratchBuffer = pool.mallocFloat(12 * shape[0] * shape[1])
+ 
+-  //Create accessor
+-  Object.defineProperty(obj, name, {
+-    set: function(x) {
+-      gl.disableVertexAttribArray(locations[index])
+-      constFunc(gl, locations[index], x)
+-      return x
+-    }
+-    , get: function() {
+-      return attr
++  for (var d = 0; d < 3; ++d) {
++    if (!this.enableDynamic[d]) {
++      this.dynamicLevel[d] = NaN
++      this._dynamicCounts[d] = 0
++      continue
+     }
+-    , enumerable: true
+-  })
+-}
+ 
+-function addMatrixAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , obj
+-  , name) {
++    this.dynamicLevel[d] = levels[d]
+ 
+-  var parts = new Array(dimension)
+-  var attrs = new Array(dimension)
+-  for(var i=0; i<dimension; ++i) {
+-    addVectorAttribute(
+-        gl
+-      , wrapper
+-      , index[i]
+-      , locations
+-      , dimension
+-      , parts
+-      , i)
+-    attrs[i] = parts[i]
+-  }
++    var u = (d + 1) % 3
++    var v = (d + 2) % 3
+ 
+-  Object.defineProperty(parts, 'location', {
+-    set: function(v) {
+-      if(Array.isArray(v)) {
+-        for(var i=0; i<dimension; ++i) {
+-          attrs[i].location = v[i]
+-        }
+-      } else {
+-        for(var i=0; i<dimension; ++i) {
+-          attrs[i].location = v + i
+-        }
+-      }
+-      return v
+-    }
+-    , get: function() {
+-      var result = new Array(dimension)
+-      for(var i=0; i<dimension; ++i) {
+-        result[i] = locations[index[i]]
+-      }
+-      return result
+-    }
+-    , enumerable: true
+-  })
++    var f = this._field[d]
++    var g = this._field[u]
++    var h = this._field[v]
++    var intensity = this.intensity
+ 
+-  parts.pointer = function(type, normalized, stride, offset) {
+-    type       = type || gl.FLOAT
+-    normalized = !!normalized
+-    stride     = stride || (dimension * dimension)
+-    offset     = offset || 0
+-    for(var i=0; i<dimension; ++i) {
+-      var location = locations[index[i]]
+-      gl.vertexAttribPointer(
+-            location
+-          , dimension
+-          , type
+-          , normalized
+-          , stride
+-          , offset + i * dimension)
+-      gl.enableVertexAttribArray(location)
+-    }
+-  }
++    var graph = surfaceNets(f, levels[d])
++    var edges = graph.cells
++    var positions = graph.positions
+ 
+-  var scratch = new Array(dimension)
+-  var vertexAttrib = gl['vertexAttrib' + dimension + 'fv']
++    this._dynamicOffsets[d] = vertexCount
+ 
+-  Object.defineProperty(obj, name, {
+-    set: function(x) {
+-      for(var i=0; i<dimension; ++i) {
+-        var loc = locations[index[i]]
+-        gl.disableVertexAttribArray(loc)
+-        if(Array.isArray(x[0])) {
+-          vertexAttrib.call(gl, loc, x[i])
+-        } else {
+-          for(var j=0; j<dimension; ++j) {
+-            scratch[j] = x[dimension*i + j]
++    for (i = 0; i < edges.length; ++i) {
++      var e = edges[i]
++      for (var j = 0; j < 2; ++j) {
++        var p = positions[e[j]]
++
++        var x = +p[0]
++        var ix = x | 0
++        var jx = Math.min(ix + 1, shape[0]) | 0
++        var fx = x - ix
++        var hx = 1.0 - fx
++
++        var y = +p[1]
++        var iy = y | 0
++        var jy = Math.min(iy + 1, shape[1]) | 0
++        var fy = y - iy
++        var hy = 1.0 - fy
++
++        var w00 = hx * hy
++        var w01 = hx * fy
++        var w10 = fx * hy
++        var w11 = fx * fy
++
++        var cu = w00 * g.get(ix, iy) +
++          w01 * g.get(ix, jy) +
++          w10 * g.get(jx, iy) +
++          w11 * g.get(jx, jy)
++
++        var cv = w00 * h.get(ix, iy) +
++          w01 * h.get(ix, jy) +
++          w10 * h.get(jx, iy) +
++          w11 * h.get(jx, jy)
++
++        if (isNaN(cu) || isNaN(cv)) {
++          if (j) {
++            vertexCount -= 1
+           }
+-          vertexAttrib.call(gl, loc, scratch)
++          break
+         }
++
++        scratchBuffer[2 * vertexCount + 0] = cu
++        scratchBuffer[2 * vertexCount + 1] = cv
++
++        vertexCount += 1
+       }
+-      return x
+-    }
+-    , get: function() {
+-      return parts
+     }
+-    , enumerable: true
+-  })
+-}
+ 
+-//Create shims for attributes
+-function createAttributeWrapper(
+-    gl
+-  , wrapper
+-  , attributes
+-  , locations) {
++    this._dynamicCounts[d] = vertexCount - this._dynamicOffsets[d]
++  }
+ 
+-  var obj = {}
+-  for(var i=0, n=attributes.length; i<n; ++i) {
++  this._dynamicBuffer.update(scratchBuffer.subarray(0, 2 * vertexCount))
++  pool.freeFloat(scratchBuffer)
++}
+ 
+-    var a = attributes[i]
+-    var name = a.name
+-    var type = a.type
+-    var locs = a.locations
++function createSurfacePlot (params) {
++  var gl = params.gl
++  var shader = createShader(gl)
++  var pickShader = createPickShader(gl)
++  var contourShader = createContourShader(gl)
++  var contourPickShader = createPickContourShader(gl)
+ 
+-    switch(type) {
+-      case 'bool':
+-      case 'int':
+-      case 'float':
+-        addVectorAttribute(
+-            gl
+-          , wrapper
+-          , locs[0]
+-          , locations
+-          , 1
+-          , obj
+-          , name)
+-      break
++  var coordinateBuffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++    { buffer: coordinateBuffer,
++      size: 4,
++      stride: SURFACE_VERTEX_SIZE,
++      offset: 0
++    },
++    { buffer: coordinateBuffer,
++      size: 3,
++      stride: SURFACE_VERTEX_SIZE,
++      offset: 16
++    },
++    {
++      buffer: coordinateBuffer,
++      size: 3,
++      stride: SURFACE_VERTEX_SIZE,
++      offset: 28
++    }
++  ])
+ 
+-      default:
+-        if(type.indexOf('vec') >= 0) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
+-          }
+-          addVectorAttribute(
+-              gl
+-            , wrapper
+-            , locs[0]
+-            , locations
+-            , d
+-            , obj
+-            , name)
+-        } else if(type.indexOf('mat') >= 0) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
+-          }
+-          addMatrixAttribute(
+-              gl
+-            , wrapper
+-            , locs
+-            , locations
+-            , d
+-            , obj
+-            , name)
+-        } else {
+-          throw new GLError('', 'Unknown data type for attribute ' + name + ': ' + type)
+-        }
+-      break
++  var contourBuffer = createBuffer(gl)
++  var contourVAO = createVAO(gl, [
++    {
++      buffer: contourBuffer,
++      size: 4,
++      stride: 20,
++      offset: 0
++    },
++    {
++      buffer: contourBuffer,
++      size: 1,
++      stride: 20,
++      offset: 16
+     }
++  ])
++
++  var dynamicBuffer = createBuffer(gl)
++  var dynamicVAO = createVAO(gl, [
++    {
++      buffer: dynamicBuffer,
++      size: 2,
++      type: gl.FLOAT
++    }])
++
++  var cmap = createTexture(gl, 1, N_COLORS, gl.RGBA, gl.UNSIGNED_BYTE)
++  cmap.minFilter = gl.LINEAR
++  cmap.magFilter = gl.LINEAR
++
++  var surface = new SurfacePlot(
++    gl,
++    [0, 0],
++    [[0, 0, 0], [0, 0, 0]],
++    shader,
++    pickShader,
++    coordinateBuffer,
++    vao,
++    cmap,
++    contourShader,
++    contourPickShader,
++    contourBuffer,
++    contourVAO,
++    dynamicBuffer,
++    dynamicVAO)
++
++  var nparams = {
++    levels: [[], [], []]
+   }
+-  return obj
++  for (var id in params) {
++    nparams[id] = params[id]
++  }
++  nparams.colormap = nparams.colormap || 'jet'
++
++  surface.update(nparams)
++
++  return surface
+ }
+ 
+-},{"./GLError":165}],167:[function(require,module,exports){
++},{"./lib/shaders":142,"binary-search-bounds":34,"bit-twiddle":35,"colormap":61,"gl-buffer":94,"gl-mat4/invert":111,"gl-mat4/multiply":113,"gl-texture2d":144,"gl-vao":148,"ndarray":191,"ndarray-gradient":182,"ndarray-ops":185,"ndarray-pack":186,"surface-nets":239,"typedarray-pool":246}],144:[function(require,module,exports){
+ 'use strict'
+ 
+-var coallesceUniforms = require('./reflect')
+-var GLError = require("./GLError")
++var ndarray = require('ndarray')
++var ops     = require('ndarray-ops')
++var pool    = require('typedarray-pool')
+ 
+-module.exports = createUniformWrapper
++module.exports = createTexture2D
+ 
+-//Binds a function and returns a value
+-function identity(x) {
+-  var c = new Function('y', 'return function(){return y}')
+-  return c(x)
++var linearTypes = null
++var filterTypes = null
++var wrapTypes   = null
++
++function lazyInitLinearTypes(gl) {
++  linearTypes = [
++    gl.LINEAR,
++    gl.NEAREST_MIPMAP_LINEAR,
++    gl.LINEAR_MIPMAP_NEAREST,
++    gl.LINEAR_MIPMAP_NEAREST
++  ]
++  filterTypes = [
++    gl.NEAREST,
++    gl.LINEAR,
++    gl.NEAREST_MIPMAP_NEAREST,
++    gl.NEAREST_MIPMAP_LINEAR,
++    gl.LINEAR_MIPMAP_NEAREST,
++    gl.LINEAR_MIPMAP_LINEAR
++  ]
++  wrapTypes = [
++    gl.REPEAT,
++    gl.CLAMP_TO_EDGE,
++    gl.MIRRORED_REPEAT
++  ]
+ }
+ 
+-function makeVector(length, fill) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = fill
++var convertFloatToUint8 = function(out, inp) {
++  ops.muls(out, inp, 255.0)
++}
++
++function reshapeTexture(tex, w, h) {
++  var gl = tex.gl
++  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(w < 0 || w > maxSize || h < 0 || h > maxSize) {
++    throw new Error('gl-texture2d: Invalid texture size')
+   }
+-  return result
++  tex._shape = [w, h]
++  tex.bind()
++  gl.texImage2D(gl.TEXTURE_2D, 0, tex.format, w, h, 0, tex.format, tex.type, null)
++  tex._mipLevels = [0]
++  return tex
+ }
+ 
+-//Create shims for uniforms
+-function createUniformWrapper(gl, wrapper, uniforms, locations) {
++function Texture2D(gl, handle, width, height, format, type) {
++  this.gl = gl
++  this.handle = handle
++  this.format = format
++  this.type = type
++  this._shape = [width, height]
++  this._mipLevels = [0]
++  this._magFilter = gl.NEAREST
++  this._minFilter = gl.NEAREST
++  this._wrapS = gl.CLAMP_TO_EDGE
++  this._wrapT = gl.CLAMP_TO_EDGE
++  this._anisoSamples = 1
+ 
+-  function makeGetter(index) {
+-    var proc = new Function(
+-        'gl'
+-      , 'wrapper'
+-      , 'locations'
+-      , 'return function(){return gl.getUniform(wrapper.program,locations[' + index + '])}')
+-    return proc(gl, wrapper, locations)
+-  }
++  var parent = this
++  var wrapVector = [this._wrapS, this._wrapT]
++  Object.defineProperties(wrapVector, [
++    {
++      get: function() {
++        return parent._wrapS
++      },
++      set: function(v) {
++        return parent.wrapS = v
++      }
++    },
++    {
++      get: function() {
++        return parent._wrapT
++      },
++      set: function(v) {
++        return parent.wrapT = v
++      }
++    }
++  ])
++  this._wrapVector = wrapVector
+ 
+-  function makePropSetter(path, index, type) {
+-    switch(type) {
+-      case 'bool':
+-      case 'int':
+-      case 'sampler2D':
+-      case 'samplerCube':
+-        return 'gl.uniform1i(locations[' + index + '],obj' + path + ')'
+-      case 'float':
+-        return 'gl.uniform1f(locations[' + index + '],obj' + path + ')'
+-      default:
+-        var vidx = type.indexOf('vec')
+-        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type')
+-          }
+-          switch(type.charAt(0)) {
+-            case 'b':
+-            case 'i':
+-              return 'gl.uniform' + d + 'iv(locations[' + index + '],obj' + path + ')'
+-            case 'v':
+-              return 'gl.uniform' + d + 'fv(locations[' + index + '],obj' + path + ')'
+-            default:
+-              throw new GLError('', 'Unrecognized data type for vector ' + name + ': ' + type)
+-          }
+-        } else if(type.indexOf('mat') === 0 && type.length === 4) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
+-          }
+-          return 'gl.uniformMatrix' + d + 'fv(locations[' + index + '],false,obj' + path + ')'
+-        } else {
+-          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
+-        }
+-      break
++  var shapeVector = [this._shape[0], this._shape[1]]
++  Object.defineProperties(shapeVector, [
++    {
++      get: function() {
++        return parent._shape[0]
++      },
++      set: function(v) {
++        return parent.width = v
++      }
++    },
++    {
++      get: function() {
++        return parent._shape[1]
++      },
++      set: function(v) {
++        return parent.height = v
++      }
+     }
+-  }
++  ])
++  this._shapeVector = shapeVector
++}
+ 
+-  function enumerateIndices(prefix, type) {
+-    if(typeof type !== 'object') {
+-      return [ [prefix, type] ]
++var proto = Texture2D.prototype
++
++Object.defineProperties(proto, {
++  minFilter: {
++    get: function() {
++      return this._minFilter
++    },
++    set: function(v) {
++      this.bind()
++      var gl = this.gl
++      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
++        if(!gl.getExtension('OES_texture_float_linear')) {
++          v = gl.NEAREST
++        }
++      }
++      if(filterTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown filter mode ' + v)
++      }
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, v)
++      return this._minFilter = v
+     }
+-    var indices = []
+-    for(var id in type) {
+-      var prop = type[id]
+-      var tprefix = prefix
+-      if(parseInt(id) + '' === id) {
+-        tprefix += '[' + id + ']'
+-      } else {
+-        tprefix += '.' + id
++  },
++  magFilter: {
++    get: function() {
++      return this._magFilter
++    },
++    set: function(v) {
++      this.bind()
++      var gl = this.gl
++      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
++        if(!gl.getExtension('OES_texture_float_linear')) {
++          v = gl.NEAREST
++        }
+       }
+-      if(typeof prop === 'object') {
+-        indices.push.apply(indices, enumerateIndices(tprefix, prop))
+-      } else {
+-        indices.push([tprefix, prop])
++      if(filterTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown filter mode ' + v)
+       }
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, v)
++      return this._magFilter = v
+     }
+-    return indices
+-  }
+-
+-  function makeSetter(type) {
+-    var code = [ 'return function updateProperty(obj){' ]
+-    var indices = enumerateIndices('', type)
+-    for(var i=0; i<indices.length; ++i) {
+-      var item = indices[i]
+-      var path = item[0]
+-      var idx  = item[1]
+-      if(locations[idx]) {
+-        code.push(makePropSetter(path, idx, uniforms[idx].type))
++  },
++  mipSamples: {
++    get: function() {
++      return this._anisoSamples
++    },
++    set: function(i) {
++      var psamples = this._anisoSamples
++      this._anisoSamples = Math.max(i, 1)|0
++      if(psamples !== this._anisoSamples) {
++        var ext = this.gl.getExtension('EXT_texture_filter_anisotropic')
++        if(ext) {
++          this.gl.texParameterf(this.gl.TEXTURE_2D, ext.TEXTURE_MAX_ANISOTROPY_EXT, this._anisoSamples)
++        }
+       }
++      return this._anisoSamples
+     }
+-    code.push('return obj}')
+-    var proc = new Function('gl', 'locations', code.join('\n'))
+-    return proc(gl, locations)
+-  }
++  },
++  wrapS: {
++    get: function() {
++      return this._wrapS
++    },
++    set: function(v) {
++      this.bind()
++      if(wrapTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++      }
++      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_S, v)
++      return this._wrapS = v
++    }
++  },
++  wrapT: {
++    get: function() {
++      return this._wrapT
++    },
++    set: function(v) {
++      this.bind()
++      if(wrapTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++      }
++      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_T, v)
++      return this._wrapT = v
++    }
++  },
++  wrap: {
++    get: function() {
++      return this._wrapVector
++    },
++    set: function(v) {
++      if(!Array.isArray(v)) {
++        v = [v,v]
++      }
++      if(v.length !== 2) {
++        throw new Error('gl-texture2d: Must specify wrap mode for rows and columns')
++      }
++      for(var i=0; i<2; ++i) {
++        if(wrapTypes.indexOf(v[i]) < 0) {
++          throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++        }
++      }
++      this._wrapS = v[0]
++      this._wrapT = v[1]
+ 
+-  function defaultValue(type) {
+-    switch(type) {
+-      case 'bool':
+-        return false
+-      case 'int':
+-      case 'sampler2D':
+-      case 'samplerCube':
+-        return 0
+-      case 'float':
+-        return 0.0
+-      default:
+-        var vidx = type.indexOf('vec')
+-        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type')
+-          }
+-          if(type.charAt(0) === 'b') {
+-            return makeVector(d, false)
+-          }
+-          return makeVector(d, 0)
+-        } else if(type.indexOf('mat') === 0 && type.length === 4) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
+-          }
+-          return makeVector(d*d, 0)
+-        } else {
+-          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
++      var gl = this.gl
++      this.bind()
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, this._wrapS)
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, this._wrapT)
++
++      return v
++    }
++  },
++  shape: {
++    get: function() {
++      return this._shapeVector
++    },
++    set: function(x) {
++      if(!Array.isArray(x)) {
++        x = [x|0,x|0]
++      } else {
++        if(x.length !== 2) {
++          throw new Error('gl-texture2d: Invalid texture shape')
+         }
+-      break
++      }
++      reshapeTexture(this, x[0]|0, x[1]|0)
++      return [x[0]|0, x[1]|0]
++    }
++  },
++  width: {
++    get: function() {
++      return this._shape[0]
++    },
++    set: function(w) {
++      w = w|0
++      reshapeTexture(this, w, this._shape[1])
++      return w
++    }
++  },
++  height: {
++    get: function() {
++      return this._shape[1]
++    },
++    set: function(h) {
++      h = h|0
++      reshapeTexture(this, this._shape[0], h)
++      return h
+     }
+   }
++})
+ 
+-  function storeProperty(obj, prop, type) {
+-    if(typeof type === 'object') {
+-      var child = processObject(type)
+-      Object.defineProperty(obj, prop, {
+-        get: identity(child),
+-        set: makeSetter(type),
+-        enumerable: true,
+-        configurable: false
+-      })
+-    } else {
+-      if(locations[type]) {
+-        Object.defineProperty(obj, prop, {
+-          get: makeGetter(type),
+-          set: makeSetter(type),
+-          enumerable: true,
+-          configurable: false
+-        })
+-      } else {
+-        obj[prop] = defaultValue(uniforms[type].type)
+-      }
+-    }
++proto.bind = function(unit) {
++  var gl = this.gl
++  if(unit !== undefined) {
++    gl.activeTexture(gl.TEXTURE0 + (unit|0))
++  }
++  gl.bindTexture(gl.TEXTURE_2D, this.handle)
++  if(unit !== undefined) {
++    return (unit|0)
+   }
++  return gl.getParameter(gl.ACTIVE_TEXTURE) - gl.TEXTURE0
++}
+ 
+-  function processObject(obj) {
+-    var result
+-    if(Array.isArray(obj)) {
+-      result = new Array(obj.length)
+-      for(var i=0; i<obj.length; ++i) {
+-        storeProperty(result, i, obj[i])
+-      }
+-    } else {
+-      result = {}
+-      for(var id in obj) {
+-        storeProperty(result, id, obj[id])
+-      }
++proto.dispose = function() {
++  this.gl.deleteTexture(this.handle)
++}
++
++proto.generateMipmap = function() {
++  this.bind()
++  this.gl.generateMipmap(this.gl.TEXTURE_2D)
++
++  //Update mip levels
++  var l = Math.min(this._shape[0], this._shape[1])
++  for(var i=0; l>0; ++i, l>>>=1) {
++    if(this._mipLevels.indexOf(i) < 0) {
++      this._mipLevels.push(i)
+     }
+-    return result
+   }
++}
+ 
+-  //Return data
+-  var coallesced = coallesceUniforms(uniforms, true)
+-  return {
+-    get: identity(processObject(coallesced)),
+-    set: makeSetter(coallesced),
+-    enumerable: true,
+-    configurable: true
++proto.setPixels = function(data, x_off, y_off, mip_level) {
++  var gl = this.gl
++  this.bind()
++  if(Array.isArray(x_off)) {
++    mip_level = y_off
++    y_off = x_off[1]|0
++    x_off = x_off[0]|0
++  } else {
++    x_off = x_off || 0
++    y_off = y_off || 0
++  }
++  mip_level = mip_level || 0
++  if(data instanceof HTMLCanvasElement ||
++     data instanceof ImageData ||
++     data instanceof HTMLImageElement ||
++     data instanceof HTMLVideoElement) {
++    var needsMip = this._mipLevels.indexOf(mip_level) < 0
++    if(needsMip) {
++      gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, this.type, data)
++      this._mipLevels.push(mip_level)
++    } else {
++      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, this.format, this.type, data)
++    }
++  } else if(data.shape && data.stride && data.data) {
++    if(data.shape.length < 2 ||
++       x_off + data.shape[1] > this._shape[1]>>>mip_level ||
++       y_off + data.shape[0] > this._shape[0]>>>mip_level ||
++       x_off < 0 ||
++       y_off < 0) {
++      throw new Error('gl-texture2d: Texture dimensions are out of bounds')
++    }
++    texSubImageArray(gl, x_off, y_off, mip_level, this.format, this.type, this._mipLevels, data)
++  } else {
++    throw new Error('gl-texture2d: Unsupported data type')
+   }
+ }
+ 
+-},{"./GLError":165,"./reflect":168}],168:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = makeReflectTypes
++function isPacked(shape, stride) {
++  if(shape.length === 3) {
++    return  (stride[2] === 1) &&
++            (stride[1] === shape[0]*shape[2]) &&
++            (stride[0] === shape[2])
++  }
++  return  (stride[0] === 1) &&
++          (stride[1] === shape[0])
++}
+ 
+-//Construct type info for reflection.
+-//
+-// This iterates over the flattened list of uniform type values and smashes them into a JSON object.
+-//
+-// The leaves of the resulting object are either indices or type strings representing primitive glslify types
+-function makeReflectTypes(uniforms, useIndex) {
+-  var obj = {}
+-  for(var i=0; i<uniforms.length; ++i) {
+-    var n = uniforms[i].name
+-    var parts = n.split(".")
+-    var o = obj
+-    for(var j=0; j<parts.length; ++j) {
+-      var x = parts[j].split("[")
+-      if(x.length > 1) {
+-        if(!(x[0] in o)) {
+-          o[x[0]] = []
+-        }
+-        o = o[x[0]]
+-        for(var k=1; k<x.length; ++k) {
+-          var y = parseInt(x[k])
+-          if(k<x.length-1 || j<parts.length-1) {
+-            if(!(y in o)) {
+-              if(k < x.length-1) {
+-                o[y] = []
+-              } else {
+-                o[y] = {}
+-              }
+-            }
+-            o = o[y]
+-          } else {
+-            if(useIndex) {
+-              o[y] = i
+-            } else {
+-              o[y] = uniforms[i].type
+-            }
+-          }
+-        }
+-      } else if(j < parts.length-1) {
+-        if(!(x[0] in o)) {
+-          o[x[0]] = {}
+-        }
+-        o = o[x[0]]
++function texSubImageArray(gl, x_off, y_off, mip_level, cformat, ctype, mipLevels, array) {
++  var dtype = array.dtype
++  var shape = array.shape.slice()
++  if(shape.length < 2 || shape.length > 3) {
++    throw new Error('gl-texture2d: Invalid ndarray, must be 2d or 3d')
++  }
++  var type = 0, format = 0
++  var packed = isPacked(shape, array.stride.slice())
++  if(dtype === 'float32') {
++    type = gl.FLOAT
++  } else if(dtype === 'float64') {
++    type = gl.FLOAT
++    packed = false
++    dtype = 'float32'
++  } else if(dtype === 'uint8') {
++    type = gl.UNSIGNED_BYTE
++  } else {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++    dtype = 'uint8'
++  }
++  var channels = 1
++  if(shape.length === 2) {
++    format = gl.LUMINANCE
++    shape = [shape[0], shape[1], 1]
++    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
++  } else if(shape.length === 3) {
++    if(shape[2] === 1) {
++      format = gl.ALPHA
++    } else if(shape[2] === 2) {
++      format = gl.LUMINANCE_ALPHA
++    } else if(shape[2] === 3) {
++      format = gl.RGB
++    } else if(shape[2] === 4) {
++      format = gl.RGBA
++    } else {
++      throw new Error('gl-texture2d: Invalid shape for pixel coords')
++    }
++    channels = shape[2]
++  } else {
++    throw new Error('gl-texture2d: Invalid shape for texture')
++  }
++  //For 1-channel textures allow conversion between formats
++  if((format  === gl.LUMINANCE || format  === gl.ALPHA) &&
++     (cformat === gl.LUMINANCE || cformat === gl.ALPHA)) {
++    format = cformat
++  }
++  if(format !== cformat) {
++    throw new Error('gl-texture2d: Incompatible texture format for setPixels')
++  }
++  var size = array.size
++  var needsMip = mipLevels.indexOf(mip_level) < 0
++  if(needsMip) {
++    mipLevels.push(mip_level)
++  }
++  if(type === ctype && packed) {
++    //Array data types are compatible, can directly copy into texture
++    if(array.offset === 0 && array.data.length === size) {
++      if(needsMip) {
++        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data)
+       } else {
+-        if(useIndex) {
+-          o[x[0]] = i
+-        } else {
+-          o[x[0]] = uniforms[i].type
+-        }
++        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data)
++      }
++    } else {
++      if(needsMip) {
++        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data.subarray(array.offset, array.offset+size))
++      } else {
++        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data.subarray(array.offset, array.offset+size))
+       }
+     }
++  } else {
++    //Need to do type conversion to pack data into buffer
++    var pack_buffer
++    if(ctype === gl.FLOAT) {
++      pack_buffer = pool.mallocFloat32(size)
++    } else {
++      pack_buffer = pool.mallocUint8(size)
++    }
++    var pack_view = ndarray(pack_buffer, shape, [shape[2], shape[2]*shape[0], 1])
++    if(type === gl.FLOAT && ctype === gl.UNSIGNED_BYTE) {
++      convertFloatToUint8(pack_view, array)
++    } else {
++      ops.assign(pack_view, array)
++    }
++    if(needsMip) {
++      gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, pack_buffer.subarray(0, size))
++    } else {
++      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, pack_buffer.subarray(0, size))
++    }
++    if(ctype === gl.FLOAT) {
++      pool.freeFloat32(pack_buffer)
++    } else {
++      pool.freeUint8(pack_buffer)
++    }
+   }
+-  return obj
+ }
+-},{}],169:[function(require,module,exports){
+-'use strict'
+ 
+-exports.uniforms    = runtimeUniforms
+-exports.attributes  = runtimeAttributes
++function initTexture(gl) {
++  var tex = gl.createTexture()
++  gl.bindTexture(gl.TEXTURE_2D, tex)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
++  return tex
++}
+ 
+-var GL_TO_GLSL_TYPES = {
+-  'FLOAT':       'float',
+-  'FLOAT_VEC2':  'vec2',
+-  'FLOAT_VEC3':  'vec3',
+-  'FLOAT_VEC4':  'vec4',
+-  'INT':         'int',
+-  'INT_VEC2':    'ivec2',
+-  'INT_VEC3':    'ivec3',
+-  'INT_VEC4':    'ivec4',
+-  'BOOL':        'bool',
+-  'BOOL_VEC2':   'bvec2',
+-  'BOOL_VEC3':   'bvec3',
+-  'BOOL_VEC4':   'bvec4',
+-  'FLOAT_MAT2':  'mat2',
+-  'FLOAT_MAT3':  'mat3',
+-  'FLOAT_MAT4':  'mat4',
+-  'SAMPLER_2D':  'sampler2D',
+-  'SAMPLER_CUBE':'samplerCube'
++function createTextureShape(gl, width, height, format, type) {
++  var maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(width < 0 || width > maxTextureSize || height < 0 || height  > maxTextureSize) {
++    throw new Error('gl-texture2d: Invalid texture shape')
++  }
++  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
++    throw new Error('gl-texture2d: Floating point textures not supported on this platform')
++  }
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, format, type, null)
++  return new Texture2D(gl, tex, width, height, format, type)
+ }
+ 
+-var GL_TABLE = null
++function createTextureDOM(gl, element, format, type) {
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, format, type, element)
++  return new Texture2D(gl, tex, element.width|0, element.height|0, format, type)
++}
+ 
+-function getType(gl, type) {
+-  if(!GL_TABLE) {
+-    var typeNames = Object.keys(GL_TO_GLSL_TYPES)
+-    GL_TABLE = {}
+-    for(var i=0; i<typeNames.length; ++i) {
+-      var tn = typeNames[i]
+-      GL_TABLE[gl[tn]] = GL_TO_GLSL_TYPES[tn]
++//Creates a texture from an ndarray
++function createTextureArray(gl, array) {
++  var dtype = array.dtype
++  var shape = array.shape.slice()
++  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(shape[0] < 0 || shape[0] > maxSize || shape[1] < 0 || shape[1] > maxSize) {
++    throw new Error('gl-texture2d: Invalid texture size')
++  }
++  var packed = isPacked(shape, array.stride.slice())
++  var type = 0
++  if(dtype === 'float32') {
++    type = gl.FLOAT
++  } else if(dtype === 'float64') {
++    type = gl.FLOAT
++    packed = false
++    dtype = 'float32'
++  } else if(dtype === 'uint8') {
++    type = gl.UNSIGNED_BYTE
++  } else {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++    dtype = 'uint8'
++  }
++  var format = 0
++  if(shape.length === 2) {
++    format = gl.LUMINANCE
++    shape = [shape[0], shape[1], 1]
++    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
++  } else if(shape.length === 3) {
++    if(shape[2] === 1) {
++      format = gl.ALPHA
++    } else if(shape[2] === 2) {
++      format = gl.LUMINANCE_ALPHA
++    } else if(shape[2] === 3) {
++      format = gl.RGB
++    } else if(shape[2] === 4) {
++      format = gl.RGBA
++    } else {
++      throw new Error('gl-texture2d: Invalid shape for pixel coords')
+     }
++  } else {
++    throw new Error('gl-texture2d: Invalid shape for texture')
+   }
+-  return GL_TABLE[type]
+-}
+-
+-function runtimeUniforms(gl, program) {
+-  var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS)
+-  var result = []
+-  for(var i=0; i<numUniforms; ++i) {
+-    var info = gl.getActiveUniform(program, i)
+-    if(info) {
+-      var type = getType(gl, info.type)
+-      if(info.size > 1) {
+-        for(var j=0; j<info.size; ++j) {
+-          result.push({
+-            name: info.name.replace('[0]', '[' + j + ']'),
+-            type: type
+-          })
+-        }
+-      } else {
+-        result.push({
+-          name: info.name,
+-          type: type
+-        })
+-      }
++  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++  }
++  var buffer, buf_store
++  var size = array.size
++  if(!packed) {
++    var stride = [shape[2], shape[2]*shape[0], 1]
++    buf_store = pool.malloc(size, dtype)
++    var buf_array = ndarray(buf_store, shape, stride, 0)
++    if((dtype === 'float32' || dtype === 'float64') && type === gl.UNSIGNED_BYTE) {
++      convertFloatToUint8(buf_array, array)
++    } else {
++      ops.assign(buf_array, array)
+     }
++    buffer = buf_store.subarray(0, size)
++  } else if (array.offset === 0 && array.data.length === size) {
++    buffer = array.data
++  } else {
++    buffer = array.data.subarray(array.offset, array.offset + size)
+   }
+-  return result
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, shape[0], shape[1], 0, format, type, buffer)
++  if(!packed) {
++    pool.free(buf_store)
++  }
++  return new Texture2D(gl, tex, shape[0], shape[1], format, type)
+ }
+ 
+-function runtimeAttributes(gl, program) {
+-  var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES)
+-  var result = []
+-  for(var i=0; i<numAttributes; ++i) {
+-    var info = gl.getActiveAttrib(program, i)
+-    if(info) {
+-      result.push({
+-        name: info.name,
+-        type: getType(gl, info.type)
+-      })
++function createTexture2D(gl) {
++  if(arguments.length <= 1) {
++    throw new Error('gl-texture2d: Missing arguments for texture2d constructor')
++  }
++  if(!linearTypes) {
++    lazyInitLinearTypes(gl)
++  }
++  if(typeof arguments[1] === 'number') {
++    return createTextureShape(gl, arguments[1], arguments[2], arguments[3]||gl.RGBA, arguments[4]||gl.UNSIGNED_BYTE)
++  }
++  if(Array.isArray(arguments[1])) {
++    return createTextureShape(gl, arguments[1][0]|0, arguments[1][1]|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
++  }
++  if(typeof arguments[1] === 'object') {
++    var obj = arguments[1]
++    if(obj instanceof HTMLCanvasElement ||
++       obj instanceof HTMLImageElement ||
++       obj instanceof HTMLVideoElement ||
++       obj instanceof ImageData) {
++      return createTextureDOM(gl, obj, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
++    } else if(obj.shape && obj.data && obj.stride) {
++      return createTextureArray(gl, obj)
+     }
+   }
+-  return result
+-}
+-
+-},{}],170:[function(require,module,exports){
+-'use strict'
+-
+-exports.shader   = getShaderReference
+-exports.program  = createProgram
+-
+-var GLError = require("./GLError")
+-var formatCompilerError = require('gl-format-compiler-error');
+-
+-var weakMap = typeof WeakMap === 'undefined' ? require('weakmap-shim') : WeakMap
+-var CACHE = new weakMap()
+-
+-var SHADER_COUNTER = 0
+-
+-function ShaderReference(id, src, type, shader, programs, count, cache) {
+-  this.id       = id
+-  this.src      = src
+-  this.type     = type
+-  this.shader   = shader
+-  this.count    = count
+-  this.programs = []
+-  this.cache    = cache
++  throw new Error('gl-texture2d: Invalid arguments for texture2d constructor')
+ }
+ 
+-ShaderReference.prototype.dispose = function() {
+-  if(--this.count === 0) {
+-    var cache    = this.cache
+-    var gl       = cache.gl
++},{"ndarray":191,"ndarray-ops":185,"typedarray-pool":246}],145:[function(require,module,exports){
++"use strict"
+ 
+-    //Remove program references
+-    var programs = this.programs
+-    for(var i=0, n=programs.length; i<n; ++i) {
+-      var p = cache.programs[programs[i]]
+-      if(p) {
+-        delete cache.programs[i]
+-        gl.deleteProgram(p)
++function doBind(gl, elements, attributes) {
++  if(elements) {
++    elements.bind()
++  } else {
++    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null)
++  }
++  var nattribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS)|0
++  if(attributes) {
++    if(attributes.length > nattribs) {
++      throw new Error("gl-vao: Too many vertex attributes")
++    }
++    for(var i=0; i<attributes.length; ++i) {
++      var attrib = attributes[i]
++      if(attrib.buffer) {
++        var buffer = attrib.buffer
++        var size = attrib.size || 4
++        var type = attrib.type || gl.FLOAT
++        var normalized = !!attrib.normalized
++        var stride = attrib.stride || 0
++        var offset = attrib.offset || 0
++        buffer.bind()
++        gl.enableVertexAttribArray(i)
++        gl.vertexAttribPointer(i, size, type, normalized, stride, offset)
++      } else {
++        if(typeof attrib === "number") {
++          gl.vertexAttrib1f(i, attrib)
++        } else if(attrib.length === 1) {
++          gl.vertexAttrib1f(i, attrib[0])
++        } else if(attrib.length === 2) {
++          gl.vertexAttrib2f(i, attrib[0], attrib[1])
++        } else if(attrib.length === 3) {
++          gl.vertexAttrib3f(i, attrib[0], attrib[1], attrib[2])
++        } else if(attrib.length === 4) {
++          gl.vertexAttrib4f(i, attrib[0], attrib[1], attrib[2], attrib[3])
++        } else {
++          throw new Error("gl-vao: Invalid vertex attribute")
++        }
++        gl.disableVertexAttribArray(i)
+       }
+     }
+-
+-    //Remove shader reference
+-    gl.deleteShader(this.shader)
+-    delete cache.shaders[(this.type === gl.FRAGMENT_SHADER)|0][this.src]
++    for(; i<nattribs; ++i) {
++      gl.disableVertexAttribArray(i)
++    }
++  } else {
++    gl.bindBuffer(gl.ARRAY_BUFFER, null)
++    for(var i=0; i<nattribs; ++i) {
++      gl.disableVertexAttribArray(i)
++    }
+   }
+ }
+ 
+-function ContextCache(gl) {
+-  this.gl       = gl
+-  this.shaders  = [{}, {}]
+-  this.programs = {}
+-}
++module.exports = doBind
++},{}],146:[function(require,module,exports){
++"use strict"
+ 
+-var proto = ContextCache.prototype
++var bindAttribs = require("./do-bind.js")
+ 
+-function compileShader(gl, type, src) {
+-  var shader = gl.createShader(type)
+-  gl.shaderSource(shader, src)
+-  gl.compileShader(shader)
+-  if(!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
+-    var errLog = gl.getShaderInfoLog(shader)
+-    try {
+-        var fmt = formatCompilerError(errLog, src, type);
+-    } catch (e){
+-        console.warn('Failed to format compiler error: ' + e);
+-        throw new GLError(errLog, 'Error compiling shader:\n' + errLog)
+-    }
+-    throw new GLError(errLog, fmt.short, fmt.long)
+-  }
+-  return shader
++function VAOEmulated(gl) {
++  this.gl = gl
++  this._elements = null
++  this._attributes = null
++  this._elementsType = gl.UNSIGNED_SHORT
+ }
+ 
+-proto.getShaderReference = function(type, src) {
+-  var gl      = this.gl
+-  var shaders = this.shaders[(type === gl.FRAGMENT_SHADER)|0]
+-  var shader  = shaders[src]
+-  if(!shader || !gl.isShader(shader.shader)) {
+-    var shaderObj = compileShader(gl, type, src)
+-    shader = shaders[src] = new ShaderReference(
+-      SHADER_COUNTER++,
+-      src,
+-      type,
+-      shaderObj,
+-      [],
+-      1,
+-      this)
+-  } else {
+-    shader.count += 1
+-  }
+-  return shader
++VAOEmulated.prototype.bind = function() {
++  bindAttribs(this.gl, this._elements, this._attributes)
+ }
+ 
+-function linkProgram(gl, vshader, fshader, attribs, locations) {
+-  var program = gl.createProgram()
+-  gl.attachShader(program, vshader)
+-  gl.attachShader(program, fshader)
+-  for(var i=0; i<attribs.length; ++i) {
+-    gl.bindAttribLocation(program, locations[i], attribs[i])
+-  }
+-  gl.linkProgram(program)
+-  if(!gl.getProgramParameter(program, gl.LINK_STATUS)) {
+-    var errLog = gl.getProgramInfoLog(program)
+-    throw new GLError(errLog, 'Error linking program: ' + errLog)
+-  }
+-  return program
++VAOEmulated.prototype.update = function(attributes, elements, elementsType) {
++  this._elements = elements
++  this._attributes = attributes
++  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
+ }
+ 
+-proto.getProgram = function(vref, fref, attribs, locations) {
+-  var token = [vref.id, fref.id, attribs.join(':'), locations.join(':')].join('@')
+-  var prog  = this.programs[token]
+-  if(!prog || !this.gl.isProgram(prog)) {
+-    this.programs[token] = prog = linkProgram(
+-      this.gl,
+-      vref.shader,
+-      fref.shader,
+-      attribs,
+-      locations)
+-    vref.programs.push(token)
+-    fref.programs.push(token)
+-  }
+-  return prog
+-}
++VAOEmulated.prototype.dispose = function() { }
++VAOEmulated.prototype.unbind = function() { }
+ 
+-function getCache(gl) {
+-  var ctxCache = CACHE.get(gl)
+-  if(!ctxCache) {
+-    ctxCache = new ContextCache(gl)
+-    CACHE.set(gl, ctxCache)
++VAOEmulated.prototype.draw = function(mode, count, offset) {
++  offset = offset || 0
++  var gl = this.gl
++  if(this._elements) {
++    gl.drawElements(mode, count, this._elementsType, offset)
++  } else {
++    gl.drawArrays(mode, offset, count)
+   }
+-  return ctxCache
+-}
+-
+-function getShaderReference(gl, type, src) {
+-  return getCache(gl).getShaderReference(type, src)
+ }
+ 
+-function createProgram(gl, vref, fref, attribs, locations) {
+-  return getCache(gl).getProgram(vref, fref, attribs, locations)
++function createVAOEmulated(gl) {
++  return new VAOEmulated(gl)
+ }
+ 
+-},{"./GLError":165,"gl-format-compiler-error":171,"weakmap-shim":181}],171:[function(require,module,exports){
+-
+-var sprintf = require('sprintf-js').sprintf;
+-var glConstants = require('gl-constants/lookup');
+-var shaderName = require('glsl-shader-name');
+-var addLineNumbers = require('add-line-numbers');
+-
+-module.exports = formatCompilerError;
+-
+-function formatCompilerError(errLog, src, type) {
+-    "use strict";
+-
+-    var name = shaderName(src) || 'of unknown name (see npm glsl-shader-name)';
+-
+-    var typeName = 'unknown type';
+-    if (type !== undefined) {
+-        typeName = type === glConstants.FRAGMENT_SHADER ? 'fragment' : 'vertex'
+-    }
+-
+-    var longForm = sprintf('Error compiling %s shader %s:\n', typeName, name);
+-    var shortForm = sprintf("%s%s", longForm, errLog);
+-
+-    var errorStrings = errLog.split('\n');
+-    var errors = {};
+-
+-    for (var i = 0; i < errorStrings.length; i++) {
+-        var errorString = errorStrings[i];
+-        if (errorString === '') continue;
+-        var lineNo = parseInt(errorString.split(':')[2]);
+-        if (isNaN(lineNo)) {
+-            throw new Error(sprintf('Could not parse error: %s', errorString));
+-        }
+-        errors[lineNo] = errorString;
+-    }
+-
+-    var lines = addLineNumbers(src).split('\n');
++module.exports = createVAOEmulated
++},{"./do-bind.js":145}],147:[function(require,module,exports){
++"use strict"
+ 
+-    for (var i = 0; i < lines.length; i++) {
+-        if (!errors[i+3] && !errors[i+2] && !errors[i+1]) continue;
+-        var line = lines[i];
+-        longForm += line + '\n';
+-        if (errors[i+1]) {
+-            var e = errors[i+1];
+-            e = e.substr(e.split(':', 3).join(':').length + 1).trim();
+-            longForm += sprintf('^^^ %s\n\n', e);
+-        }
+-    }
++var bindAttribs = require("./do-bind.js")
+ 
+-    return {
+-        long: longForm.trim(),
+-        short: shortForm.trim()
+-    };
++function VertexAttribute(location, dimension, a, b, c, d) {
++  this.location = location
++  this.dimension = dimension
++  this.a = a
++  this.b = b
++  this.c = c
++  this.d = d
+ }
+ 
+-
+-},{"add-line-numbers":172,"gl-constants/lookup":175,"glsl-shader-name":176,"sprintf-js":178}],172:[function(require,module,exports){
+-var padLeft = require('pad-left')
+-
+-module.exports = addLineNumbers
+-function addLineNumbers (string, start, delim) {
+-  start = typeof start === 'number' ? start : 1
+-  delim = delim || ': '
+-
+-  var lines = string.split(/\r?\n/)
+-  var totalDigits = String(lines.length + start - 1).length
+-  return lines.map(function (line, i) {
+-    var c = i + start
+-    var digits = String(c).length
+-    var prefix = padLeft(c, totalDigits - digits)
+-    return prefix + delim + line
+-  }).join('\n')
++VertexAttribute.prototype.bind = function(gl) {
++  switch(this.dimension) {
++    case 1:
++      gl.vertexAttrib1f(this.location, this.a)
++    break
++    case 2:
++      gl.vertexAttrib2f(this.location, this.a, this.b)
++    break
++    case 3:
++      gl.vertexAttrib3f(this.location, this.a, this.b, this.c)
++    break
++    case 4:
++      gl.vertexAttrib4f(this.location, this.a, this.b, this.c, this.d)
++    break
++  }
+ }
+ 
+-},{"pad-left":173}],173:[function(require,module,exports){
+-/*!
+- * pad-left <https://github.com/jonschlinkert/pad-left>
+- *
+- * Copyright (c) 2014-2015, Jon Schlinkert.
+- * Licensed under the MIT license.
+- */
+-
+-'use strict';
+-
+-var repeat = require('repeat-string');
+-
+-module.exports = function padLeft(str, num, ch) {
+-  ch = typeof ch !== 'undefined' ? (ch + '') : ' ';
+-  return repeat(ch, num) + str;
+-};
+-},{"repeat-string":220}],174:[function(require,module,exports){
+-module.exports = {
+-  0: 'NONE',
+-  1: 'ONE',
+-  2: 'LINE_LOOP',
+-  3: 'LINE_STRIP',
+-  4: 'TRIANGLES',
+-  5: 'TRIANGLE_STRIP',
+-  6: 'TRIANGLE_FAN',
+-  256: 'DEPTH_BUFFER_BIT',
+-  512: 'NEVER',
+-  513: 'LESS',
+-  514: 'EQUAL',
+-  515: 'LEQUAL',
+-  516: 'GREATER',
+-  517: 'NOTEQUAL',
+-  518: 'GEQUAL',
+-  519: 'ALWAYS',
+-  768: 'SRC_COLOR',
+-  769: 'ONE_MINUS_SRC_COLOR',
+-  770: 'SRC_ALPHA',
+-  771: 'ONE_MINUS_SRC_ALPHA',
+-  772: 'DST_ALPHA',
+-  773: 'ONE_MINUS_DST_ALPHA',
+-  774: 'DST_COLOR',
+-  775: 'ONE_MINUS_DST_COLOR',
+-  776: 'SRC_ALPHA_SATURATE',
+-  1024: 'STENCIL_BUFFER_BIT',
+-  1028: 'FRONT',
+-  1029: 'BACK',
+-  1032: 'FRONT_AND_BACK',
+-  1280: 'INVALID_ENUM',
+-  1281: 'INVALID_VALUE',
+-  1282: 'INVALID_OPERATION',
+-  1285: 'OUT_OF_MEMORY',
+-  1286: 'INVALID_FRAMEBUFFER_OPERATION',
+-  2304: 'CW',
+-  2305: 'CCW',
+-  2849: 'LINE_WIDTH',
+-  2884: 'CULL_FACE',
+-  2885: 'CULL_FACE_MODE',
+-  2886: 'FRONT_FACE',
+-  2928: 'DEPTH_RANGE',
+-  2929: 'DEPTH_TEST',
+-  2930: 'DEPTH_WRITEMASK',
+-  2931: 'DEPTH_CLEAR_VALUE',
+-  2932: 'DEPTH_FUNC',
+-  2960: 'STENCIL_TEST',
+-  2961: 'STENCIL_CLEAR_VALUE',
+-  2962: 'STENCIL_FUNC',
+-  2963: 'STENCIL_VALUE_MASK',
+-  2964: 'STENCIL_FAIL',
+-  2965: 'STENCIL_PASS_DEPTH_FAIL',
+-  2966: 'STENCIL_PASS_DEPTH_PASS',
+-  2967: 'STENCIL_REF',
+-  2968: 'STENCIL_WRITEMASK',
+-  2978: 'VIEWPORT',
+-  3024: 'DITHER',
+-  3042: 'BLEND',
+-  3088: 'SCISSOR_BOX',
+-  3089: 'SCISSOR_TEST',
+-  3106: 'COLOR_CLEAR_VALUE',
+-  3107: 'COLOR_WRITEMASK',
+-  3317: 'UNPACK_ALIGNMENT',
+-  3333: 'PACK_ALIGNMENT',
+-  3379: 'MAX_TEXTURE_SIZE',
+-  3386: 'MAX_VIEWPORT_DIMS',
+-  3408: 'SUBPIXEL_BITS',
+-  3410: 'RED_BITS',
+-  3411: 'GREEN_BITS',
+-  3412: 'BLUE_BITS',
+-  3413: 'ALPHA_BITS',
+-  3414: 'DEPTH_BITS',
+-  3415: 'STENCIL_BITS',
+-  3553: 'TEXTURE_2D',
+-  4352: 'DONT_CARE',
+-  4353: 'FASTEST',
+-  4354: 'NICEST',
+-  5120: 'BYTE',
+-  5121: 'UNSIGNED_BYTE',
+-  5122: 'SHORT',
+-  5123: 'UNSIGNED_SHORT',
+-  5124: 'INT',
+-  5125: 'UNSIGNED_INT',
+-  5126: 'FLOAT',
+-  5386: 'INVERT',
+-  5890: 'TEXTURE',
+-  6401: 'STENCIL_INDEX',
+-  6402: 'DEPTH_COMPONENT',
+-  6406: 'ALPHA',
+-  6407: 'RGB',
+-  6408: 'RGBA',
+-  6409: 'LUMINANCE',
+-  6410: 'LUMINANCE_ALPHA',
+-  7680: 'KEEP',
+-  7681: 'REPLACE',
+-  7682: 'INCR',
+-  7683: 'DECR',
+-  7936: 'VENDOR',
+-  7937: 'RENDERER',
+-  7938: 'VERSION',
+-  9728: 'NEAREST',
+-  9729: 'LINEAR',
+-  9984: 'NEAREST_MIPMAP_NEAREST',
+-  9985: 'LINEAR_MIPMAP_NEAREST',
+-  9986: 'NEAREST_MIPMAP_LINEAR',
+-  9987: 'LINEAR_MIPMAP_LINEAR',
+-  10240: 'TEXTURE_MAG_FILTER',
+-  10241: 'TEXTURE_MIN_FILTER',
+-  10242: 'TEXTURE_WRAP_S',
+-  10243: 'TEXTURE_WRAP_T',
+-  10497: 'REPEAT',
+-  10752: 'POLYGON_OFFSET_UNITS',
+-  16384: 'COLOR_BUFFER_BIT',
+-  32769: 'CONSTANT_COLOR',
+-  32770: 'ONE_MINUS_CONSTANT_COLOR',
+-  32771: 'CONSTANT_ALPHA',
+-  32772: 'ONE_MINUS_CONSTANT_ALPHA',
+-  32773: 'BLEND_COLOR',
+-  32774: 'FUNC_ADD',
+-  32777: 'BLEND_EQUATION_RGB',
+-  32778: 'FUNC_SUBTRACT',
+-  32779: 'FUNC_REVERSE_SUBTRACT',
+-  32819: 'UNSIGNED_SHORT_4_4_4_4',
+-  32820: 'UNSIGNED_SHORT_5_5_5_1',
+-  32823: 'POLYGON_OFFSET_FILL',
+-  32824: 'POLYGON_OFFSET_FACTOR',
+-  32854: 'RGBA4',
+-  32855: 'RGB5_A1',
+-  32873: 'TEXTURE_BINDING_2D',
+-  32926: 'SAMPLE_ALPHA_TO_COVERAGE',
+-  32928: 'SAMPLE_COVERAGE',
+-  32936: 'SAMPLE_BUFFERS',
+-  32937: 'SAMPLES',
+-  32938: 'SAMPLE_COVERAGE_VALUE',
+-  32939: 'SAMPLE_COVERAGE_INVERT',
+-  32968: 'BLEND_DST_RGB',
+-  32969: 'BLEND_SRC_RGB',
+-  32970: 'BLEND_DST_ALPHA',
+-  32971: 'BLEND_SRC_ALPHA',
+-  33071: 'CLAMP_TO_EDGE',
+-  33170: 'GENERATE_MIPMAP_HINT',
+-  33189: 'DEPTH_COMPONENT16',
+-  33306: 'DEPTH_STENCIL_ATTACHMENT',
+-  33635: 'UNSIGNED_SHORT_5_6_5',
+-  33648: 'MIRRORED_REPEAT',
+-  33901: 'ALIASED_POINT_SIZE_RANGE',
+-  33902: 'ALIASED_LINE_WIDTH_RANGE',
+-  33984: 'TEXTURE0',
+-  33985: 'TEXTURE1',
+-  33986: 'TEXTURE2',
+-  33987: 'TEXTURE3',
+-  33988: 'TEXTURE4',
+-  33989: 'TEXTURE5',
+-  33990: 'TEXTURE6',
+-  33991: 'TEXTURE7',
+-  33992: 'TEXTURE8',
+-  33993: 'TEXTURE9',
+-  33994: 'TEXTURE10',
+-  33995: 'TEXTURE11',
+-  33996: 'TEXTURE12',
+-  33997: 'TEXTURE13',
+-  33998: 'TEXTURE14',
+-  33999: 'TEXTURE15',
+-  34000: 'TEXTURE16',
+-  34001: 'TEXTURE17',
+-  34002: 'TEXTURE18',
+-  34003: 'TEXTURE19',
+-  34004: 'TEXTURE20',
+-  34005: 'TEXTURE21',
+-  34006: 'TEXTURE22',
+-  34007: 'TEXTURE23',
+-  34008: 'TEXTURE24',
+-  34009: 'TEXTURE25',
+-  34010: 'TEXTURE26',
+-  34011: 'TEXTURE27',
+-  34012: 'TEXTURE28',
+-  34013: 'TEXTURE29',
+-  34014: 'TEXTURE30',
+-  34015: 'TEXTURE31',
+-  34016: 'ACTIVE_TEXTURE',
+-  34024: 'MAX_RENDERBUFFER_SIZE',
+-  34041: 'DEPTH_STENCIL',
+-  34055: 'INCR_WRAP',
+-  34056: 'DECR_WRAP',
+-  34067: 'TEXTURE_CUBE_MAP',
+-  34068: 'TEXTURE_BINDING_CUBE_MAP',
+-  34069: 'TEXTURE_CUBE_MAP_POSITIVE_X',
+-  34070: 'TEXTURE_CUBE_MAP_NEGATIVE_X',
+-  34071: 'TEXTURE_CUBE_MAP_POSITIVE_Y',
+-  34072: 'TEXTURE_CUBE_MAP_NEGATIVE_Y',
+-  34073: 'TEXTURE_CUBE_MAP_POSITIVE_Z',
+-  34074: 'TEXTURE_CUBE_MAP_NEGATIVE_Z',
+-  34076: 'MAX_CUBE_MAP_TEXTURE_SIZE',
+-  34338: 'VERTEX_ATTRIB_ARRAY_ENABLED',
+-  34339: 'VERTEX_ATTRIB_ARRAY_SIZE',
+-  34340: 'VERTEX_ATTRIB_ARRAY_STRIDE',
+-  34341: 'VERTEX_ATTRIB_ARRAY_TYPE',
+-  34342: 'CURRENT_VERTEX_ATTRIB',
+-  34373: 'VERTEX_ATTRIB_ARRAY_POINTER',
+-  34466: 'NUM_COMPRESSED_TEXTURE_FORMATS',
+-  34467: 'COMPRESSED_TEXTURE_FORMATS',
+-  34660: 'BUFFER_SIZE',
+-  34661: 'BUFFER_USAGE',
+-  34816: 'STENCIL_BACK_FUNC',
+-  34817: 'STENCIL_BACK_FAIL',
+-  34818: 'STENCIL_BACK_PASS_DEPTH_FAIL',
+-  34819: 'STENCIL_BACK_PASS_DEPTH_PASS',
+-  34877: 'BLEND_EQUATION_ALPHA',
+-  34921: 'MAX_VERTEX_ATTRIBS',
+-  34922: 'VERTEX_ATTRIB_ARRAY_NORMALIZED',
+-  34930: 'MAX_TEXTURE_IMAGE_UNITS',
+-  34962: 'ARRAY_BUFFER',
+-  34963: 'ELEMENT_ARRAY_BUFFER',
+-  34964: 'ARRAY_BUFFER_BINDING',
+-  34965: 'ELEMENT_ARRAY_BUFFER_BINDING',
+-  34975: 'VERTEX_ATTRIB_ARRAY_BUFFER_BINDING',
+-  35040: 'STREAM_DRAW',
+-  35044: 'STATIC_DRAW',
+-  35048: 'DYNAMIC_DRAW',
+-  35632: 'FRAGMENT_SHADER',
+-  35633: 'VERTEX_SHADER',
+-  35660: 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
+-  35661: 'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
+-  35663: 'SHADER_TYPE',
+-  35664: 'FLOAT_VEC2',
+-  35665: 'FLOAT_VEC3',
+-  35666: 'FLOAT_VEC4',
+-  35667: 'INT_VEC2',
+-  35668: 'INT_VEC3',
+-  35669: 'INT_VEC4',
+-  35670: 'BOOL',
+-  35671: 'BOOL_VEC2',
+-  35672: 'BOOL_VEC3',
+-  35673: 'BOOL_VEC4',
+-  35674: 'FLOAT_MAT2',
+-  35675: 'FLOAT_MAT3',
+-  35676: 'FLOAT_MAT4',
+-  35678: 'SAMPLER_2D',
+-  35680: 'SAMPLER_CUBE',
+-  35712: 'DELETE_STATUS',
+-  35713: 'COMPILE_STATUS',
+-  35714: 'LINK_STATUS',
+-  35715: 'VALIDATE_STATUS',
+-  35716: 'INFO_LOG_LENGTH',
+-  35717: 'ATTACHED_SHADERS',
+-  35718: 'ACTIVE_UNIFORMS',
+-  35719: 'ACTIVE_UNIFORM_MAX_LENGTH',
+-  35720: 'SHADER_SOURCE_LENGTH',
+-  35721: 'ACTIVE_ATTRIBUTES',
+-  35722: 'ACTIVE_ATTRIBUTE_MAX_LENGTH',
+-  35724: 'SHADING_LANGUAGE_VERSION',
+-  35725: 'CURRENT_PROGRAM',
+-  36003: 'STENCIL_BACK_REF',
+-  36004: 'STENCIL_BACK_VALUE_MASK',
+-  36005: 'STENCIL_BACK_WRITEMASK',
+-  36006: 'FRAMEBUFFER_BINDING',
+-  36007: 'RENDERBUFFER_BINDING',
+-  36048: 'FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE',
+-  36049: 'FRAMEBUFFER_ATTACHMENT_OBJECT_NAME',
+-  36050: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL',
+-  36051: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
+-  36053: 'FRAMEBUFFER_COMPLETE',
+-  36054: 'FRAMEBUFFER_INCOMPLETE_ATTACHMENT',
+-  36055: 'FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT',
+-  36057: 'FRAMEBUFFER_INCOMPLETE_DIMENSIONS',
+-  36061: 'FRAMEBUFFER_UNSUPPORTED',
+-  36064: 'COLOR_ATTACHMENT0',
+-  36096: 'DEPTH_ATTACHMENT',
+-  36128: 'STENCIL_ATTACHMENT',
+-  36160: 'FRAMEBUFFER',
+-  36161: 'RENDERBUFFER',
+-  36162: 'RENDERBUFFER_WIDTH',
+-  36163: 'RENDERBUFFER_HEIGHT',
+-  36164: 'RENDERBUFFER_INTERNAL_FORMAT',
+-  36168: 'STENCIL_INDEX8',
+-  36176: 'RENDERBUFFER_RED_SIZE',
+-  36177: 'RENDERBUFFER_GREEN_SIZE',
+-  36178: 'RENDERBUFFER_BLUE_SIZE',
+-  36179: 'RENDERBUFFER_ALPHA_SIZE',
+-  36180: 'RENDERBUFFER_DEPTH_SIZE',
+-  36181: 'RENDERBUFFER_STENCIL_SIZE',
+-  36194: 'RGB565',
+-  36336: 'LOW_FLOAT',
+-  36337: 'MEDIUM_FLOAT',
+-  36338: 'HIGH_FLOAT',
+-  36339: 'LOW_INT',
+-  36340: 'MEDIUM_INT',
+-  36341: 'HIGH_INT',
+-  36346: 'SHADER_COMPILER',
+-  36347: 'MAX_VERTEX_UNIFORM_VECTORS',
+-  36348: 'MAX_VARYING_VECTORS',
+-  36349: 'MAX_FRAGMENT_UNIFORM_VECTORS',
+-  37440: 'UNPACK_FLIP_Y_WEBGL',
+-  37441: 'UNPACK_PREMULTIPLY_ALPHA_WEBGL',
+-  37442: 'CONTEXT_LOST_WEBGL',
+-  37443: 'UNPACK_COLORSPACE_CONVERSION_WEBGL',
+-  37444: 'BROWSER_DEFAULT_WEBGL'
++function VAONative(gl, ext, handle) {
++  this.gl = gl
++  this._ext = ext
++  this.handle = handle
++  this._attribs = []
++  this._useElements = false
++  this._elementsType = gl.UNSIGNED_SHORT
+ }
+ 
+-},{}],175:[function(require,module,exports){
+-var gl10 = require('./1.0/numbers')
++VAONative.prototype.bind = function() {
++  this._ext.bindVertexArrayOES(this.handle)
++  for(var i=0; i<this._attribs.length; ++i) {
++    this._attribs[i].bind(this.gl)
++  }
++}
+ 
+-module.exports = function lookupConstant (number) {
+-  return gl10[number]
++VAONative.prototype.unbind = function() {
++  this._ext.bindVertexArrayOES(null)
+ }
+ 
+-},{"./1.0/numbers":174}],176:[function(require,module,exports){
+-var tokenize = require('glsl-tokenizer')
+-var atob     = require('atob-lite')
++VAONative.prototype.dispose = function() {
++  this._ext.deleteVertexArrayOES(this.handle)
++}
+ 
+-module.exports = getName
++VAONative.prototype.update = function(attributes, elements, elementsType) {
++  this.bind()
++  bindAttribs(this.gl, elements, attributes)
++  this.unbind()
++  this._attribs.length = 0
++  if(attributes)
++  for(var i=0; i<attributes.length; ++i) {
++    var a = attributes[i]
++    if(typeof a === "number") {
++      this._attribs.push(new VertexAttribute(i, 1, a))
++    } else if(Array.isArray(a)) {
++      this._attribs.push(new VertexAttribute(i, a.length, a[0], a[1], a[2], a[3]))
++    }
++  }
++  this._useElements = !!elements
++  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
++}
+ 
+-function getName(src) {
+-  var tokens = Array.isArray(src)
+-    ? src
+-    : tokenize(src)
++VAONative.prototype.draw = function(mode, count, offset) {
++  offset = offset || 0
++  var gl = this.gl
++  if(this._useElements) {
++    gl.drawElements(mode, count, this._elementsType, offset)
++  } else {
++    gl.drawArrays(mode, offset, count)
++  }
++}
+ 
+-  for (var i = 0; i < tokens.length; i++) {
+-    var token = tokens[i]
+-    if (token.type !== 'preprocessor') continue
+-    var match = token.data.match(/\#define\s+SHADER_NAME(_B64)?\s+(.+)$/)
+-    if (!match) continue
+-    if (!match[2]) continue
++function createVAONative(gl, ext) {
++  return new VAONative(gl, ext, ext.createVertexArrayOES())
++}
+ 
+-    var b64  = match[1]
+-    var name = match[2]
++module.exports = createVAONative
++},{"./do-bind.js":145}],148:[function(require,module,exports){
++"use strict"
+ 
+-    return (b64 ? atob(name) : name).trim()
+-  }
+-}
++var createVAONative = require("./lib/vao-native.js")
++var createVAOEmulated = require("./lib/vao-emulated.js")
+ 
+-},{"atob-lite":177,"glsl-tokenizer":200}],177:[function(require,module,exports){
+-module.exports = function _atob(str) {
+-  return atob(str)
++function ExtensionShim (gl) {
++  this.bindVertexArrayOES = gl.bindVertexArray.bind(gl)
++  this.createVertexArrayOES = gl.createVertexArray.bind(gl)
++  this.deleteVertexArrayOES = gl.deleteVertexArray.bind(gl)
+ }
+ 
+-},{}],178:[function(require,module,exports){
+-(function(window) {
+-    var re = {
+-        not_string: /[^s]/,
+-        number: /[diefg]/,
+-        json: /[j]/,
+-        not_json: /[^j]/,
+-        text: /^[^\x25]+/,
+-        modulo: /^\x25{2}/,
+-        placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijosuxX])/,
+-        key: /^([a-z_][a-z_\d]*)/i,
+-        key_access: /^\.([a-z_][a-z_\d]*)/i,
+-        index_access: /^\[(\d+)\]/,
+-        sign: /^[\+\-]/
+-    }
++function createVAO(gl, attributes, elements, elementsType) {
++  var ext = gl.createVertexArray
++    ? new ExtensionShim(gl)
++    : gl.getExtension('OES_vertex_array_object')
++  var vao
+ 
+-    function sprintf() {
+-        var key = arguments[0], cache = sprintf.cache
+-        if (!(cache[key] && cache.hasOwnProperty(key))) {
+-            cache[key] = sprintf.parse(key)
+-        }
+-        return sprintf.format.call(null, cache[key], arguments)
+-    }
++  if(ext) {
++    vao = createVAONative(gl, ext)
++  } else {
++    vao = createVAOEmulated(gl)
++  }
++  vao.update(attributes, elements, elementsType)
++  return vao
++}
+ 
+-    sprintf.format = function(parse_tree, argv) {
+-        var cursor = 1, tree_length = parse_tree.length, node_type = "", arg, output = [], i, k, match, pad, pad_character, pad_length, is_positive = true, sign = ""
+-        for (i = 0; i < tree_length; i++) {
+-            node_type = get_type(parse_tree[i])
+-            if (node_type === "string") {
+-                output[output.length] = parse_tree[i]
+-            }
+-            else if (node_type === "array") {
+-                match = parse_tree[i] // convenience purposes only
+-                if (match[2]) { // keyword argument
+-                    arg = argv[cursor]
+-                    for (k = 0; k < match[2].length; k++) {
+-                        if (!arg.hasOwnProperty(match[2][k])) {
+-                            throw new Error(sprintf("[sprintf] property '%s' does not exist", match[2][k]))
+-                        }
+-                        arg = arg[match[2][k]]
+-                    }
+-                }
+-                else if (match[1]) { // positional argument (explicit)
+-                    arg = argv[match[1]]
+-                }
+-                else { // positional argument (implicit)
+-                    arg = argv[cursor++]
+-                }
++module.exports = createVAO
+ 
+-                if (get_type(arg) == "function") {
+-                    arg = arg()
+-                }
++},{"./lib/vao-emulated.js":146,"./lib/vao-native.js":147}],149:[function(require,module,exports){
++module.exports = cross;
+ 
+-                if (re.not_string.test(match[8]) && re.not_json.test(match[8]) && (get_type(arg) != "number" && isNaN(arg))) {
+-                    throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg)))
+-                }
++/**
++ * Computes the cross product of two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++function cross(out, a, b) {
++    var ax = a[0], ay = a[1], az = a[2],
++        bx = b[0], by = b[1], bz = b[2]
+ 
+-                if (re.number.test(match[8])) {
+-                    is_positive = arg >= 0
+-                }
++    out[0] = ay * bz - az * by
++    out[1] = az * bx - ax * bz
++    out[2] = ax * by - ay * bx
++    return out
++}
++},{}],150:[function(require,module,exports){
++module.exports = dot;
+ 
+-                switch (match[8]) {
+-                    case "b":
+-                        arg = arg.toString(2)
+-                    break
+-                    case "c":
+-                        arg = String.fromCharCode(arg)
+-                    break
+-                    case "d":
+-                    case "i":
+-                        arg = parseInt(arg, 10)
+-                    break
+-                    case "j":
+-                        arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
+-                    break
+-                    case "e":
+-                        arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential()
+-                    break
+-                    case "f":
+-                        arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
+-                    break
+-                    case "g":
+-                        arg = match[7] ? parseFloat(arg).toPrecision(match[7]) : parseFloat(arg)
+-                    break
+-                    case "o":
+-                        arg = arg.toString(8)
+-                    break
+-                    case "s":
+-                        arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg)
+-                    break
+-                    case "u":
+-                        arg = arg >>> 0
+-                    break
+-                    case "x":
+-                        arg = arg.toString(16)
+-                    break
+-                    case "X":
+-                        arg = arg.toString(16).toUpperCase()
+-                    break
+-                }
+-                if (re.json.test(match[8])) {
+-                    output[output.length] = arg
+-                }
+-                else {
+-                    if (re.number.test(match[8]) && (!is_positive || match[3])) {
+-                        sign = is_positive ? "+" : "-"
+-                        arg = arg.toString().replace(re.sign, "")
+-                    }
+-                    else {
+-                        sign = ""
+-                    }
+-                    pad_character = match[4] ? match[4] === "0" ? "0" : match[4].charAt(1) : " "
+-                    pad_length = match[6] - (sign + arg).length
+-                    pad = match[6] ? (pad_length > 0 ? str_repeat(pad_character, pad_length) : "") : ""
+-                    output[output.length] = match[5] ? sign + arg + pad : (pad_character === "0" ? sign + pad + arg : pad + sign + arg)
+-                }
+-            }
+-        }
+-        return output.join("")
+-    }
++/**
++ * Calculates the dot product of two vec3's
++ *
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} dot product of a and b
++ */
++function dot(a, b) {
++    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]
++}
++},{}],151:[function(require,module,exports){
++module.exports = length;
+ 
+-    sprintf.cache = {}
++/**
++ * Calculates the length of a vec3
++ *
++ * @param {vec3} a vector to calculate length of
++ * @returns {Number} length of a
++ */
++function length(a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2]
++    return Math.sqrt(x*x + y*y + z*z)
++}
++},{}],152:[function(require,module,exports){
++module.exports = lerp;
+ 
+-    sprintf.parse = function(fmt) {
+-        var _fmt = fmt, match = [], parse_tree = [], arg_names = 0
+-        while (_fmt) {
+-            if ((match = re.text.exec(_fmt)) !== null) {
+-                parse_tree[parse_tree.length] = match[0]
+-            }
+-            else if ((match = re.modulo.exec(_fmt)) !== null) {
+-                parse_tree[parse_tree.length] = "%"
+-            }
+-            else if ((match = re.placeholder.exec(_fmt)) !== null) {
+-                if (match[2]) {
+-                    arg_names |= 1
+-                    var field_list = [], replacement_field = match[2], field_match = []
+-                    if ((field_match = re.key.exec(replacement_field)) !== null) {
+-                        field_list[field_list.length] = field_match[1]
+-                        while ((replacement_field = replacement_field.substring(field_match[0].length)) !== "") {
+-                            if ((field_match = re.key_access.exec(replacement_field)) !== null) {
+-                                field_list[field_list.length] = field_match[1]
+-                            }
+-                            else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
+-                                field_list[field_list.length] = field_match[1]
+-                            }
+-                            else {
+-                                throw new SyntaxError("[sprintf] failed to parse named argument key")
+-                            }
+-                        }
+-                    }
+-                    else {
+-                        throw new SyntaxError("[sprintf] failed to parse named argument key")
+-                    }
+-                    match[2] = field_list
+-                }
+-                else {
+-                    arg_names |= 2
+-                }
+-                if (arg_names === 3) {
+-                    throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
+-                }
+-                parse_tree[parse_tree.length] = match
+-            }
+-            else {
+-                throw new SyntaxError("[sprintf] unexpected placeholder")
+-            }
+-            _fmt = _fmt.substring(match[0].length)
+-        }
+-        return parse_tree
+-    }
++/**
++ * Performs a linear interpolation between two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
++ */
++function lerp(out, a, b, t) {
++    var ax = a[0],
++        ay = a[1],
++        az = a[2]
++    out[0] = ax + t * (b[0] - ax)
++    out[1] = ay + t * (b[1] - ay)
++    out[2] = az + t * (b[2] - az)
++    return out
++}
++},{}],153:[function(require,module,exports){
++module.exports = normalize;
+ 
+-    var vsprintf = function(fmt, argv, _argv) {
+-        _argv = (argv || []).slice(0)
+-        _argv.splice(0, 0, fmt)
+-        return sprintf.apply(null, _argv)
++/**
++ * Normalize a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to normalize
++ * @returns {vec3} out
++ */
++function normalize(out, a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2]
++    var len = x*x + y*y + z*z
++    if (len > 0) {
++        //TODO: evaluate use of glm_invsqrt here?
++        len = 1 / Math.sqrt(len)
++        out[0] = a[0] * len
++        out[1] = a[1] * len
++        out[2] = a[2] * len
+     }
++    return out
++}
++},{}],154:[function(require,module,exports){
++module.exports = transformMat4
+ 
+-    /**
+-     * helpers
+-     */
+-    function get_type(variable) {
+-        return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase()
+-    }
++/**
++ * Transforms the vec4 with a mat4.
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec4} out
++ */
++function transformMat4 (out, a, m) {
++  var x = a[0], y = a[1], z = a[2], w = a[3]
++  out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w
++  out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w
++  out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w
++  out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w
++  return out
++}
+ 
+-    function str_repeat(input, multiplier) {
+-        return Array(multiplier + 1).join(input)
+-    }
++},{}],155:[function(require,module,exports){
++module.exports = decodeFloat
+ 
+-    /**
+-     * export to either browser or node.js
+-     */
+-    if (typeof exports !== "undefined") {
+-        exports.sprintf = sprintf
+-        exports.vsprintf = vsprintf
+-    }
+-    else {
+-        window.sprintf = sprintf
+-        window.vsprintf = vsprintf
++var UINT8_VIEW = new Uint8Array(4)
++var FLOAT_VIEW = new Float32Array(UINT8_VIEW.buffer)
+ 
+-        if (typeof define === "function" && define.amd) {
+-            define(function() {
+-                return {
+-                    sprintf: sprintf,
+-                    vsprintf: vsprintf
+-                }
+-            })
+-        }
+-    }
+-})(typeof window === "undefined" ? this : window);
++function decodeFloat(x, y, z, w) {
++  UINT8_VIEW[0] = w
++  UINT8_VIEW[1] = z
++  UINT8_VIEW[2] = y
++  UINT8_VIEW[3] = x
++  return FLOAT_VIEW[0]
++}
+ 
+-},{}],179:[function(require,module,exports){
+-var hiddenStore = require('./hidden-store.js');
++},{}],156:[function(require,module,exports){
++var tokenize = require('glsl-tokenizer')
++var atob     = require('atob-lite')
+ 
+-module.exports = createStore;
++module.exports = getName
+ 
+-function createStore() {
+-    var key = {};
++function getName(src) {
++  var tokens = Array.isArray(src)
++    ? src
++    : tokenize(src)
+ 
+-    return function (obj) {
+-        if ((typeof obj !== 'object' || obj === null) &&
+-            typeof obj !== 'function'
+-        ) {
+-            throw new Error('Weakmap-shim: Key must be object')
+-        }
++  for (var i = 0; i < tokens.length; i++) {
++    var token = tokens[i]
++    if (token.type !== 'preprocessor') continue
++    var match = token.data.match(/\#define\s+SHADER_NAME(_B64)?\s+(.+)$/)
++    if (!match) continue
++    if (!match[2]) continue
+ 
+-        var store = obj.valueOf(key);
+-        return store && store.identity === key ?
+-            store : hiddenStore(obj, key);
+-    };
++    var b64  = match[1]
++    var name = match[2]
++
++    return (b64 ? atob(name) : name).trim()
++  }
+ }
+ 
+-},{"./hidden-store.js":180}],180:[function(require,module,exports){
+-module.exports = hiddenStore;
++},{"atob-lite":16,"glsl-tokenizer":163}],157:[function(require,module,exports){
++module.exports = tokenize
+ 
+-function hiddenStore(obj, key) {
+-    var store = { identity: key };
+-    var valueOf = obj.valueOf;
++var literals100 = require('./lib/literals')
++  , operators = require('./lib/operators')
++  , builtins100 = require('./lib/builtins')
++  , literals300es = require('./lib/literals-300es')
++  , builtins300es = require('./lib/builtins-300es')
+ 
+-    Object.defineProperty(obj, "valueOf", {
+-        value: function (value) {
+-            return value !== key ?
+-                valueOf.apply(this, arguments) : store;
+-        },
+-        writable: true
+-    });
++var NORMAL = 999          // <-- never emitted
++  , TOKEN = 9999          // <-- never emitted
++  , BLOCK_COMMENT = 0
++  , LINE_COMMENT = 1
++  , PREPROCESSOR = 2
++  , OPERATOR = 3
++  , INTEGER = 4
++  , FLOAT = 5
++  , IDENT = 6
++  , BUILTIN = 7
++  , KEYWORD = 8
++  , WHITESPACE = 9
++  , EOF = 10
++  , HEX = 11
+ 
+-    return store;
+-}
++var map = [
++    'block-comment'
++  , 'line-comment'
++  , 'preprocessor'
++  , 'operator'
++  , 'integer'
++  , 'float'
++  , 'ident'
++  , 'builtin'
++  , 'keyword'
++  , 'whitespace'
++  , 'eof'
++  , 'integer'
++]
+ 
+-},{}],181:[function(require,module,exports){
+-// Original - @Gozola. 
+-// https://gist.github.com/Gozala/1269991
+-// This is a reimplemented version (with a few bug fixes).
++function tokenize(opt) {
++  var i = 0
++    , total = 0
++    , mode = NORMAL
++    , c
++    , last
++    , content = []
++    , tokens = []
++    , token_idx = 0
++    , token_offs = 0
++    , line = 1
++    , col = 0
++    , start = 0
++    , isnum = false
++    , isoperator = false
++    , input = ''
++    , len
++
++  opt = opt || {}
++  var allBuiltins = builtins100
++  var allLiterals = literals100
++  if (opt.version === '300 es') {
++    allBuiltins = builtins300es
++    allLiterals = literals300es
++  }
++
++  return function(data) {
++    tokens = []
++    if (data !== null) return write(data.replace ? data.replace(/\r\n/g, '\n') : data)
++    return end()
++  }
++
++  function token(data) {
++    if (data.length) {
++      tokens.push({
++        type: map[mode]
++      , data: data
++      , position: start
++      , line: line
++      , column: col
++      })
++    }
++  }
++
++  function write(chunk) {
++    i = 0
++    input += chunk
++    len = input.length
+ 
+-var createStore = require('./create-store.js');
++    var last
+ 
+-module.exports = weakMap;
++    while(c = input[i], i < len) {
++      last = i
+ 
+-function weakMap() {
+-    var privates = createStore();
++      switch(mode) {
++        case BLOCK_COMMENT: i = block_comment(); break
++        case LINE_COMMENT: i = line_comment(); break
++        case PREPROCESSOR: i = preprocessor(); break
++        case OPERATOR: i = operator(); break
++        case INTEGER: i = integer(); break
++        case HEX: i = hex(); break
++        case FLOAT: i = decimal(); break
++        case TOKEN: i = readtoken(); break
++        case WHITESPACE: i = whitespace(); break
++        case NORMAL: i = normal(); break
++      }
+ 
+-    return {
+-        'get': function (key, fallback) {
+-            var store = privates(key)
+-            return store.hasOwnProperty('value') ?
+-                store.value : fallback
+-        },
+-        'set': function (key, value) {
+-            privates(key).value = value;
+-        },
+-        'has': function(key) {
+-            return 'value' in privates(key);
+-        },
+-        'delete': function (key) {
+-            return delete privates(key).value;
++      if(last !== i) {
++        switch(input[last]) {
++          case '\n': col = 0; ++line; break
++          default: ++col; break
+         }
++      }
+     }
+-}
+-
+-},{"./create-store.js":179}],182:[function(require,module,exports){
+-var createShader = require('gl-shader')
+ 
++    total += i
++    input = input.slice(i)
++    return tokens
++  }
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute vec3 f;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection, inverseModel;\nuniform vec3 lightPosition, eyePosition;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  worldCoordinate = vec3(uv.zw, f.x);\n  vec4 worldPosition = model * vec4(worldCoordinate, 1.0);\n  vec4 clipPosition = projection * view * worldPosition;\n  gl_Position = clipPosition;\n  kill = f.y;\n  value = f.z;\n  planeCoordinate = uv.xy;\n\n  //Lighting geometry parameters\n  vec4 cameraCoordinate = view * worldPosition;\n  cameraCoordinate.xyz /= cameraCoordinate.w;\n  lightDirection = lightPosition - cameraCoordinate.xyz;\n  eyeDirection   = eyePosition - cameraCoordinate.xyz;\n  surfaceNormal  = normalize((vec4(normal,0) * inverseModel).xyz);\n}\n"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat beckmannSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness) {\n  return beckmannDistribution_2_0(dot(surfaceNormal, normalize(lightDirection + viewDirection)), roughness);\n}\n\n\n\nuniform vec3 lowerBound, upperBound;\nuniform float contourTint;\nuniform vec4 contourColor;\nuniform sampler2D colormap;\nuniform vec3 clipBounds[2];\nuniform float roughness, fresnel, kambient, kdiffuse, kspecular, opacity;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(surfaceNormal);\n  vec3 V = normalize(eyeDirection);\n  vec3 L = normalize(lightDirection);\n\n  if(gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = beckmannSpecular_1_1(L, V, N, roughness);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = texture2D(colormap, vec2(value, value));\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = mix(litColor, contourColor, contourTint) * opacity;\n}\n"
+-var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute float f;\n\nuniform mat3 permutation;\nuniform mat4 model, view, projection;\nuniform float height, zOffset;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  vec3 dataCoordinate = permutation * vec3(uv.xy, height);\n  vec4 worldPosition = model * vec4(dataCoordinate, 1.0);\n\n  vec4 clipPosition = projection * view * worldPosition;\n  clipPosition.z = clipPosition.z + zOffset;\n\n  gl_Position = clipPosition;\n  value = f;\n  kill = -1.0;\n  worldCoordinate = dataCoordinate;\n  planeCoordinate = uv.zw;\n\n  //Don't do lighting for contours\n  surfaceNormal   = vec3(1,0,0);\n  eyeDirection    = vec3(0,1,0);\n  lightDirection  = vec3(0,0,1);\n}\n"
+-var pickSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec2 shape;\nuniform vec3 clipBounds[2];\nuniform float pickId;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 surfaceNormal;\n\nvec2 splitFloat(float v) {\n  float vh = 255.0 * v;\n  float upper = floor(vh);\n  float lower = fract(vh);\n  return vec2(upper / 255.0, floor(lower * 16.0) / 16.0);\n}\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n  vec2 ux = splitFloat(planeCoordinate.x / shape.x);\n  vec2 uy = splitFloat(planeCoordinate.y / shape.y);\n  gl_FragColor = vec4(pickId, ux.x, uy.x, ux.y + (uy.y/16.0));\n}\n"
++  function end(chunk) {
++    if(content.length) {
++      token(content.join(''))
++    }
+ 
+-exports.createShader = function (gl) {
+-  var shader = createShader(gl, vertSrc, fragSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  shader.attributes.normal.location = 2
+-  return shader
+-}
+-exports.createPickShader = function (gl) {
+-  var shader = createShader(gl, vertSrc, pickSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  shader.attributes.normal.location = 2
+-  return shader
+-}
+-exports.createContourShader = function (gl) {
+-  var shader = createShader(gl, contourVertSrc, fragSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'float'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  return shader
+-}
+-exports.createPickContourShader = function (gl) {
+-  var shader = createShader(gl, contourVertSrc, pickSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'float'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  return shader
+-}
++    mode = EOF
++    token('(eof)')
++    return tokens
++  }
+ 
+-},{"gl-shader":164}],183:[function(require,module,exports){
+-arguments[4][9][0].apply(exports,arguments)
+-},{"dup":9}],184:[function(require,module,exports){
+-'use strict'
++  function normal() {
++    content = content.length ? [] : content
+ 
+-module.exports      = gradient
++    if(last === '/' && c === '*') {
++      start = total + i - 1
++      mode = BLOCK_COMMENT
++      last = c
++      return i + 1
++    }
+ 
+-var dup             = require('dup')
+-var cwiseCompiler   = require('cwise-compiler')
++    if(last === '/' && c === '/') {
++      start = total + i - 1
++      mode = LINE_COMMENT
++      last = c
++      return i + 1
++    }
+ 
+-var TEMPLATE_CACHE  = {}
+-var GRADIENT_CACHE  = {}
++    if(c === '#') {
++      mode = PREPROCESSOR
++      start = total + i
++      return i
++    }
+ 
+-var EmptyProc = {
+-  body: "",
+-  args: [],
+-  thisVars: [],
+-  localVars: []
+-}
++    if(/\s/.test(c)) {
++      mode = WHITESPACE
++      start = total + i
++      return i
++    }
+ 
+-var centralDiff = cwiseCompiler({
+-  args: [ 'array', 'array', 'array' ],
+-  pre: EmptyProc,
+-  post: EmptyProc,
+-  body: {
+-    args: [ {
+-      name: 'out', 
+-      lvalue: true,
+-      rvalue: false,
+-      count: 1
+-    }, {
+-      name: 'left', 
+-      lvalue: false,
+-      rvalue: true,
+-      count: 1
+-    }, {
+-      name: 'right', 
+-      lvalue: false,
+-      rvalue: true,
+-      count: 1
+-    }],
+-    body: "out=0.5*(left-right)",
+-    thisVars: [],
+-    localVars: []
+-  },
+-  funcName: 'cdiff'
+-})
++    isnum = /\d/.test(c)
++    isoperator = /[^\w_]/.test(c)
+ 
+-var zeroOut = cwiseCompiler({
+-  args: [ 'array' ],
+-  pre: EmptyProc,
+-  post: EmptyProc,
+-  body: {
+-    args: [ {
+-      name: 'out', 
+-      lvalue: true,
+-      rvalue: false,
+-      count: 1
+-    }],
+-    body: "out=0",
+-    thisVars: [],
+-    localVars: []
+-  },
+-  funcName: 'zero'
+-})
++    start = total + i
++    mode = isnum ? INTEGER : isoperator ? OPERATOR : TOKEN
++    return i
++  }
+ 
+-function generateTemplate(d) {
+-  if(d in TEMPLATE_CACHE) {
+-    return TEMPLATE_CACHE[d]
++  function whitespace() {
++    if(/[^\s]/g.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
++    content.push(c)
++    last = c
++    return i + 1
+   }
+-  var code = []
+-  for(var i=0; i<d; ++i) {
+-    code.push('out', i, 's=0.5*(inp', i, 'l-inp', i, 'r);')
++
++  function preprocessor() {
++    if((c === '\r' || c === '\n') && last !== '\\') {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
++    content.push(c)
++    last = c
++    return i + 1
+   }
+-  var args = [ 'array' ]
+-  var names = ['junk']
+-  for(var i=0; i<d; ++i) {
+-    args.push('array')
+-    names.push('out' + i + 's')
+-    var o = dup(d)
+-    o[i] = -1
+-    args.push({
+-      array: 0,
+-      offset: o.slice()
+-    })
+-    o[i] = 1
+-    args.push({
+-      array: 0,
+-      offset: o.slice()
+-    })
+-    names.push('inp' + i + 'l', 'inp' + i + 'r')
++
++  function line_comment() {
++    return preprocessor()
+   }
+-  return TEMPLATE_CACHE[d] = cwiseCompiler({
+-    args: args,
+-    pre:  EmptyProc,
+-    post: EmptyProc,
+-    body: {
+-      body: code.join(''),
+-      args: names.map(function(n) {
+-        return {
+-          name: n,
+-          lvalue: n.indexOf('out') === 0,
+-          rvalue: n.indexOf('inp') === 0,
+-          count: (n!=='junk')|0
+-        }
+-      }),
+-      thisVars: [],
+-      localVars: []
+-    },
+-    funcName: 'fdTemplate' + d
+-  })
+-}
+ 
+-function generateGradient(boundaryConditions) {
+-  var token = boundaryConditions.join()
+-  var proc = GRADIENT_CACHE[token]
+-  if(proc) {
+-    return proc
++  function block_comment() {
++    if(c === '/' && last === '*') {
++      content.push(c)
++      token(content.join(''))
++      mode = NORMAL
++      return i + 1
++    }
++
++    content.push(c)
++    last = c
++    return i + 1
+   }
+ 
+-  var d = boundaryConditions.length
+-  var code = ['function gradient(dst,src){var s=src.shape.slice();' ]
+-  
+-  function handleBoundary(facet) {
+-    var cod = d - facet.length
++  function operator() {
++    if(last === '.' && /\d/.test(c)) {
++      mode = FLOAT
++      return i
++    }
+ 
+-    var loStr = []
+-    var hiStr = []
+-    var pickStr = []
+-    for(var i=0; i<d; ++i) {
+-      if(facet.indexOf(i+1) >= 0) {
+-        pickStr.push('0')
+-      } else if(facet.indexOf(-(i+1)) >= 0) {
+-        pickStr.push('s['+i+']-1')
+-      } else {
+-        pickStr.push('-1')
+-        loStr.push('1')
+-        hiStr.push('s['+i+']-2')
+-      }
++    if(last === '/' && c === '*') {
++      mode = BLOCK_COMMENT
++      return i
+     }
+-    var boundStr = '.lo(' + loStr.join() + ').hi(' + hiStr.join() + ')'
+-    if(loStr.length === 0) {
+-      boundStr = ''
++
++    if(last === '/' && c === '/') {
++      mode = LINE_COMMENT
++      return i
+     }
+-        
+-    if(cod > 0) {
+-      code.push('if(1') 
+-      for(var i=0; i<d; ++i) {
+-        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
+-          continue
+-        }
+-        code.push('&&s[', i, ']>2')
+-      }
+-      code.push('){grad', cod, '(src.pick(', pickStr.join(), ')', boundStr)
+-      for(var i=0; i<d; ++i) {
+-        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
+-          continue
+-        }
+-        code.push(',dst.pick(', pickStr.join(), ',', i, ')', boundStr)
+-      }
+-      code.push(');')
++
++    if(c === '.' && content.length) {
++      while(determine_operator(content));
++
++      mode = FLOAT
++      return i
+     }
+ 
+-    for(var i=0; i<facet.length; ++i) {
+-      var bnd = Math.abs(facet[i])-1
+-      var outStr = 'dst.pick(' + pickStr.join() + ',' + bnd + ')' + boundStr
+-      switch(boundaryConditions[bnd]) {
++    if(c === ';' || c === ')' || c === '(') {
++      if(content.length) while(determine_operator(content));
++      token(c)
++      mode = NORMAL
++      return i + 1
++    }
+ 
+-        case 'clamp':
+-          var cPickStr = pickStr.slice()
+-          var dPickStr = pickStr.slice()
+-          if(facet[i] < 0) {
+-            cPickStr[bnd] = 's[' + bnd + ']-2'
+-          } else {
+-            dPickStr[bnd] = '1'
+-          }
+-          if(cod === 0) {
+-            code.push('if(s[', bnd, ']>1){dst.set(',
+-              pickStr.join(), ',', bnd, ',0.5*(src.get(',
+-                cPickStr.join(), ')-src.get(',
+-                dPickStr.join(), ')))}else{dst.set(',
+-              pickStr.join(), ',', bnd, ',0)};')
+-          } else {
+-            code.push('if(s[', bnd, ']>1){diff(', outStr, 
+-                ',src.pick(', cPickStr.join(), ')', boundStr, 
+-                ',src.pick(', dPickStr.join(), ')', boundStr, 
+-                ');}else{zero(', outStr, ');};')
+-          }
+-        break
++    var is_composite_operator = content.length === 2 && c !== '='
++    if(/[\w_\d\s]/.test(c) || is_composite_operator) {
++      while(determine_operator(content));
++      mode = NORMAL
++      return i
++    }
+ 
+-        case 'mirror':
+-          if(cod === 0) {
+-            code.push('dst.set(', pickStr.join(), ',', bnd, ',0);')
+-          } else {
+-            code.push('zero(', outStr, ');')
+-          }
+-        break
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-        case 'wrap':
+-          var aPickStr = pickStr.slice()
+-          var bPickStr = pickStr.slice()
+-          if(facet[i] < 0) {
+-            aPickStr[bnd] = 's[' + bnd + ']-2'
+-            bPickStr[bnd] = '0'
+-            
+-          } else {
+-            aPickStr[bnd] = 's[' + bnd + ']-1'
+-            bPickStr[bnd] = '1'
+-          }
+-          if(cod === 0) {
+-            code.push('if(s[', bnd, ']>2){dst.set(',
+-              pickStr.join(), ',', bnd, ',0.5*(src.get(',
+-                aPickStr.join(), ')-src.get(',
+-                bPickStr.join(), ')))}else{dst.set(',
+-              pickStr.join(), ',', bnd, ',0)};')
+-          } else {
+-            code.push('if(s[', bnd, ']>2){diff(', outStr, 
+-                ',src.pick(', aPickStr.join(), ')', boundStr, 
+-                ',src.pick(', bPickStr.join(), ')', boundStr, 
+-                ');}else{zero(', outStr, ');};')
+-          }
+-        break
++  function determine_operator(buf) {
++    var j = 0
++      , idx
++      , res
+ 
+-        default:
+-          throw new Error('ndarray-gradient: Invalid boundary condition')
++    do {
++      idx = operators.indexOf(buf.slice(0, buf.length + j).join(''))
++      res = operators[idx]
++
++      if(idx === -1) {
++        if(j-- + buf.length > 0) continue
++        res = buf.slice(0, 1).join('')
+       }
+-    }
+ 
+-    if(cod > 0) {
+-      code.push('};')
++      token(res)
++
++      start += res.length
++      content = content.slice(res.length)
++      return content.length
++    } while(1)
++  }
++
++  function hex() {
++    if(/[^a-fA-F0-9]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
+     }
++
++    content.push(c)
++    last = c
++    return i + 1
+   }
+ 
+-  //Enumerate ridges, facets, etc. of hypercube
+-  for(var i=0; i<(1<<d); ++i) {
+-    var faces = []
+-    for(var j=0; j<d; ++j) {
+-      if(i & (1<<j)) {
+-        faces.push(j+1)
+-      }
++  function integer() {
++    if(c === '.') {
++      content.push(c)
++      mode = FLOAT
++      last = c
++      return i + 1
+     }
+-    for(var k=0; k<(1<<faces.length); ++k) {
+-      var sfaces = faces.slice()
+-      for(var j=0; j<faces.length; ++j) {
+-        if(k & (1<<j)) {
+-          sfaces[j] = -sfaces[j]
+-        }
+-      }
+-      handleBoundary(sfaces)
++
++    if(/[eE]/.test(c)) {
++      content.push(c)
++      mode = FLOAT
++      last = c
++      return i + 1
+     }
+-  }
+ 
+-  code.push('return dst;};return gradient')
++    if(c === 'x' && content.length === 1 && content[0] === '0') {
++      mode = HEX
++      content.push(c)
++      last = c
++      return i + 1
++    }
+ 
+-  //Compile and link routine, save cached procedure
+-  var linkNames = [ 'diff', 'zero' ]
+-  var linkArgs  = [ centralDiff, zeroOut ]
+-  for(var i=1; i<=d; ++i) {
+-    linkNames.push('grad' + i)
+-    linkArgs.push(generateTemplate(i))
++    if(/[^\d]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
++
++    content.push(c)
++    last = c
++    return i + 1
+   }
+-  linkNames.push(code.join(''))
+ 
+-  var link = Function.apply(void 0, linkNames)
+-  var proc = link.apply(void 0, linkArgs)
+-  TEMPLATE_CACHE[token] = proc
+-  return proc
+-}
++  function decimal() {
++    if(c === 'f') {
++      content.push(c)
++      last = c
++      i += 1
++    }
+ 
+-function gradient(out, inp, bc) {
+-  if(Array.isArray(bc)) {
+-    if(bc.length !== inp.dimension) {
+-      throw new Error('ndarray-gradient: invalid boundary conditions')
++    if(/[eE]/.test(c)) {
++      content.push(c)
++      last = c
++      return i + 1
+     }
+-  } else if(typeof bc === 'string') {
+-    bc = dup(inp.dimension, bc)
+-  } else {
+-    bc = dup(inp.dimension, 'clamp')
+-  }
+-  if(out.dimension !== inp.dimension + 1) {
+-    throw new Error('ndarray-gradient: output dimension must be +1 input dimension')
+-  }
+-  if(out.shape[inp.dimension] !== inp.dimension) {
+-    throw new Error('ndarray-gradient: output shape must match input shape')
+-  }
+-  for(var i=0; i<inp.dimension; ++i) {
+-    if(out.shape[i] !== inp.shape[i]) {
+-      throw new Error('ndarray-gradient: shape mismatch')
++
++    if (c === '-' && /[eE]/.test(last)) {
++      content.push(c)
++      last = c
++      return i + 1
+     }
+-  }
+-  if(inp.size === 0) {
+-    return out
+-  }
+-  if(inp.dimension <= 0) {
+-    out.set(0)
+-    return out
+-  }
+-  var cached = generateGradient(bc)
+-  return cached(out, inp)
+-}
+-},{"cwise-compiler":96,"dup":102}],185:[function(require,module,exports){
+-"use strict"
+ 
+-var ndarray = require("ndarray")
+-var do_convert = require("./doConvert.js")
++    if(/[^\d]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
+ 
+-module.exports = function convert(arr, result) {
+-  var shape = [], c = arr, sz = 1
+-  while(c instanceof Array) {
+-    shape.push(c.length)
+-    sz *= c.length
+-    c = c[0]
+-  }
+-  if(shape.length === 0) {
+-    return ndarray()
++    content.push(c)
++    last = c
++    return i + 1
+   }
+-  if(!result) {
+-    result = ndarray(new Float64Array(sz), shape)
++
++  function readtoken() {
++    if(/[^\d\w_]/.test(c)) {
++      var contentstr = content.join('')
++      if(allLiterals.indexOf(contentstr) > -1) {
++        mode = KEYWORD
++      } else if(allBuiltins.indexOf(contentstr) > -1) {
++        mode = BUILTIN
++      } else {
++        mode = IDENT
++      }
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
++    content.push(c)
++    last = c
++    return i + 1
+   }
+-  do_convert(result, arr)
+-  return result
+ }
+ 
+-},{"./doConvert.js":186,"ndarray":219}],186:[function(require,module,exports){
+-module.exports=require('cwise-compiler')({"args":["array","scalar","index"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{\nvar _inline_1_v=_inline_1_arg1_,_inline_1_i\nfor(_inline_1_i=0;_inline_1_i<_inline_1_arg2_.length-1;++_inline_1_i) {\n_inline_1_v=_inline_1_v[_inline_1_arg2_[_inline_1_i]]\n}\n_inline_1_arg0_=_inline_1_v[_inline_1_arg2_[_inline_1_arg2_.length-1]]\n}","args":[{"name":"_inline_1_arg0_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_1_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_1_arg2_","lvalue":false,"rvalue":true,"count":4}],"thisVars":[],"localVars":["_inline_1_i","_inline_1_v"]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"funcName":"convert","blockSize":64})
++},{"./lib/builtins":159,"./lib/builtins-300es":158,"./lib/literals":161,"./lib/literals-300es":160,"./lib/operators":162}],158:[function(require,module,exports){
++// 300es builtins/reserved words that were previously valid in v100
++var v100 = require('./builtins')
+ 
+-},{"cwise-compiler":96}],187:[function(require,module,exports){
+-'use strict'
++// The texture2D|Cube functions have been removed
++// And the gl_ features are updated
++v100 = v100.slice().filter(function (b) {
++  return !/^(gl\_|texture)/.test(b)
++})
+ 
+-module.exports = createSurfacePlot
++module.exports = v100.concat([
++  // the updated gl_ constants
++    'gl_VertexID'
++  , 'gl_InstanceID'
++  , 'gl_Position'
++  , 'gl_PointSize'
++  , 'gl_FragCoord'
++  , 'gl_FrontFacing'
++  , 'gl_FragDepth'
++  , 'gl_PointCoord'
++  , 'gl_MaxVertexAttribs'
++  , 'gl_MaxVertexUniformVectors'
++  , 'gl_MaxVertexOutputVectors'
++  , 'gl_MaxFragmentInputVectors'
++  , 'gl_MaxVertexTextureImageUnits'
++  , 'gl_MaxCombinedTextureImageUnits'
++  , 'gl_MaxTextureImageUnits'
++  , 'gl_MaxFragmentUniformVectors'
++  , 'gl_MaxDrawBuffers'
++  , 'gl_MinProgramTexelOffset'
++  , 'gl_MaxProgramTexelOffset'
++  , 'gl_DepthRangeParameters'
++  , 'gl_DepthRange'
+ 
+-var bits = require('bit-twiddle')
+-var createBuffer = require('gl-buffer')
+-var createVAO = require('gl-vao')
+-var createTexture = require('gl-texture2d')
+-var pool = require('typedarray-pool')
+-var colormap = require('colormap')
+-var ops = require('ndarray-ops')
+-var pack = require('ndarray-pack')
+-var ndarray = require('ndarray')
+-var surfaceNets = require('surface-nets')
+-var multiply = require('gl-mat4/multiply')
+-var invert = require('gl-mat4/invert')
+-var bsearch = require('binary-search-bounds')
+-var gradient = require('ndarray-gradient')
+-var shaders = require('./lib/shaders')
++  // other builtins
++  , 'trunc'
++  , 'round'
++  , 'roundEven'
++  , 'isnan'
++  , 'isinf'
++  , 'floatBitsToInt'
++  , 'floatBitsToUint'
++  , 'intBitsToFloat'
++  , 'uintBitsToFloat'
++  , 'packSnorm2x16'
++  , 'unpackSnorm2x16'
++  , 'packUnorm2x16'
++  , 'unpackUnorm2x16'
++  , 'packHalf2x16'
++  , 'unpackHalf2x16'
++  , 'outerProduct'
++  , 'transpose'
++  , 'determinant'
++  , 'inverse'
++  , 'texture'
++  , 'textureSize'
++  , 'textureProj'
++  , 'textureLod'
++  , 'textureOffset'
++  , 'texelFetch'
++  , 'texelFetchOffset'
++  , 'textureProjOffset'
++  , 'textureLodOffset'
++  , 'textureProjLod'
++  , 'textureProjLodOffset'
++  , 'textureGrad'
++  , 'textureGradOffset'
++  , 'textureProjGrad'
++  , 'textureProjGradOffset'
++])
+ 
+-var createShader = shaders.createShader
+-var createContourShader = shaders.createContourShader
+-var createPickShader = shaders.createPickShader
+-var createPickContourShader = shaders.createPickContourShader
++},{"./builtins":159}],159:[function(require,module,exports){
++module.exports = [
++  // Keep this list sorted
++  'abs'
++  , 'acos'
++  , 'all'
++  , 'any'
++  , 'asin'
++  , 'atan'
++  , 'ceil'
++  , 'clamp'
++  , 'cos'
++  , 'cross'
++  , 'dFdx'
++  , 'dFdy'
++  , 'degrees'
++  , 'distance'
++  , 'dot'
++  , 'equal'
++  , 'exp'
++  , 'exp2'
++  , 'faceforward'
++  , 'floor'
++  , 'fract'
++  , 'gl_BackColor'
++  , 'gl_BackLightModelProduct'
++  , 'gl_BackLightProduct'
++  , 'gl_BackMaterial'
++  , 'gl_BackSecondaryColor'
++  , 'gl_ClipPlane'
++  , 'gl_ClipVertex'
++  , 'gl_Color'
++  , 'gl_DepthRange'
++  , 'gl_DepthRangeParameters'
++  , 'gl_EyePlaneQ'
++  , 'gl_EyePlaneR'
++  , 'gl_EyePlaneS'
++  , 'gl_EyePlaneT'
++  , 'gl_Fog'
++  , 'gl_FogCoord'
++  , 'gl_FogFragCoord'
++  , 'gl_FogParameters'
++  , 'gl_FragColor'
++  , 'gl_FragCoord'
++  , 'gl_FragData'
++  , 'gl_FragDepth'
++  , 'gl_FragDepthEXT'
++  , 'gl_FrontColor'
++  , 'gl_FrontFacing'
++  , 'gl_FrontLightModelProduct'
++  , 'gl_FrontLightProduct'
++  , 'gl_FrontMaterial'
++  , 'gl_FrontSecondaryColor'
++  , 'gl_LightModel'
++  , 'gl_LightModelParameters'
++  , 'gl_LightModelProducts'
++  , 'gl_LightProducts'
++  , 'gl_LightSource'
++  , 'gl_LightSourceParameters'
++  , 'gl_MaterialParameters'
++  , 'gl_MaxClipPlanes'
++  , 'gl_MaxCombinedTextureImageUnits'
++  , 'gl_MaxDrawBuffers'
++  , 'gl_MaxFragmentUniformComponents'
++  , 'gl_MaxLights'
++  , 'gl_MaxTextureCoords'
++  , 'gl_MaxTextureImageUnits'
++  , 'gl_MaxTextureUnits'
++  , 'gl_MaxVaryingFloats'
++  , 'gl_MaxVertexAttribs'
++  , 'gl_MaxVertexTextureImageUnits'
++  , 'gl_MaxVertexUniformComponents'
++  , 'gl_ModelViewMatrix'
++  , 'gl_ModelViewMatrixInverse'
++  , 'gl_ModelViewMatrixInverseTranspose'
++  , 'gl_ModelViewMatrixTranspose'
++  , 'gl_ModelViewProjectionMatrix'
++  , 'gl_ModelViewProjectionMatrixInverse'
++  , 'gl_ModelViewProjectionMatrixInverseTranspose'
++  , 'gl_ModelViewProjectionMatrixTranspose'
++  , 'gl_MultiTexCoord0'
++  , 'gl_MultiTexCoord1'
++  , 'gl_MultiTexCoord2'
++  , 'gl_MultiTexCoord3'
++  , 'gl_MultiTexCoord4'
++  , 'gl_MultiTexCoord5'
++  , 'gl_MultiTexCoord6'
++  , 'gl_MultiTexCoord7'
++  , 'gl_Normal'
++  , 'gl_NormalMatrix'
++  , 'gl_NormalScale'
++  , 'gl_ObjectPlaneQ'
++  , 'gl_ObjectPlaneR'
++  , 'gl_ObjectPlaneS'
++  , 'gl_ObjectPlaneT'
++  , 'gl_Point'
++  , 'gl_PointCoord'
++  , 'gl_PointParameters'
++  , 'gl_PointSize'
++  , 'gl_Position'
++  , 'gl_ProjectionMatrix'
++  , 'gl_ProjectionMatrixInverse'
++  , 'gl_ProjectionMatrixInverseTranspose'
++  , 'gl_ProjectionMatrixTranspose'
++  , 'gl_SecondaryColor'
++  , 'gl_TexCoord'
++  , 'gl_TextureEnvColor'
++  , 'gl_TextureMatrix'
++  , 'gl_TextureMatrixInverse'
++  , 'gl_TextureMatrixInverseTranspose'
++  , 'gl_TextureMatrixTranspose'
++  , 'gl_Vertex'
++  , 'greaterThan'
++  , 'greaterThanEqual'
++  , 'inversesqrt'
++  , 'length'
++  , 'lessThan'
++  , 'lessThanEqual'
++  , 'log'
++  , 'log2'
++  , 'matrixCompMult'
++  , 'max'
++  , 'min'
++  , 'mix'
++  , 'mod'
++  , 'normalize'
++  , 'not'
++  , 'notEqual'
++  , 'pow'
++  , 'radians'
++  , 'reflect'
++  , 'refract'
++  , 'sign'
++  , 'sin'
++  , 'smoothstep'
++  , 'sqrt'
++  , 'step'
++  , 'tan'
++  , 'texture2D'
++  , 'texture2DLod'
++  , 'texture2DProj'
++  , 'texture2DProjLod'
++  , 'textureCube'
++  , 'textureCubeLod'
++  , 'texture2DLodEXT'
++  , 'texture2DProjLodEXT'
++  , 'textureCubeLodEXT'
++  , 'texture2DGradEXT'
++  , 'texture2DProjGradEXT'
++  , 'textureCubeGradEXT'
++]
+ 
+-var SURFACE_VERTEX_SIZE = 4 * (4 + 3 + 3)
++},{}],160:[function(require,module,exports){
++var v100 = require('./literals')
++
++module.exports = v100.slice().concat([
++   'layout'
++  , 'centroid'
++  , 'smooth'
++  , 'case'
++  , 'mat2x2'
++  , 'mat2x3'
++  , 'mat2x4'
++  , 'mat3x2'
++  , 'mat3x3'
++  , 'mat3x4'
++  , 'mat4x2'
++  , 'mat4x3'
++  , 'mat4x4'
++  , 'uint'
++  , 'uvec2'
++  , 'uvec3'
++  , 'uvec4'
++  , 'samplerCubeShadow'
++  , 'sampler2DArray'
++  , 'sampler2DArrayShadow'
++  , 'isampler2D'
++  , 'isampler3D'
++  , 'isamplerCube'
++  , 'isampler2DArray'
++  , 'usampler2D'
++  , 'usampler3D'
++  , 'usamplerCube'
++  , 'usampler2DArray'
++  , 'coherent'
++  , 'restrict'
++  , 'readonly'
++  , 'writeonly'
++  , 'resource'
++  , 'atomic_uint'
++  , 'noperspective'
++  , 'patch'
++  , 'sample'
++  , 'subroutine'
++  , 'common'
++  , 'partition'
++  , 'active'
++  , 'filter'
++  , 'image1D'
++  , 'image2D'
++  , 'image3D'
++  , 'imageCube'
++  , 'iimage1D'
++  , 'iimage2D'
++  , 'iimage3D'
++  , 'iimageCube'
++  , 'uimage1D'
++  , 'uimage2D'
++  , 'uimage3D'
++  , 'uimageCube'
++  , 'image1DArray'
++  , 'image2DArray'
++  , 'iimage1DArray'
++  , 'iimage2DArray'
++  , 'uimage1DArray'
++  , 'uimage2DArray'
++  , 'image1DShadow'
++  , 'image2DShadow'
++  , 'image1DArrayShadow'
++  , 'image2DArrayShadow'
++  , 'imageBuffer'
++  , 'iimageBuffer'
++  , 'uimageBuffer'
++  , 'sampler1DArray'
++  , 'sampler1DArrayShadow'
++  , 'isampler1D'
++  , 'isampler1DArray'
++  , 'usampler1D'
++  , 'usampler1DArray'
++  , 'isampler2DRect'
++  , 'usampler2DRect'
++  , 'samplerBuffer'
++  , 'isamplerBuffer'
++  , 'usamplerBuffer'
++  , 'sampler2DMS'
++  , 'isampler2DMS'
++  , 'usampler2DMS'
++  , 'sampler2DMSArray'
++  , 'isampler2DMSArray'
++  , 'usampler2DMSArray'
++])
++
++},{"./literals":161}],161:[function(require,module,exports){
++module.exports = [
++  // current
++    'precision'
++  , 'highp'
++  , 'mediump'
++  , 'lowp'
++  , 'attribute'
++  , 'const'
++  , 'uniform'
++  , 'varying'
++  , 'break'
++  , 'continue'
++  , 'do'
++  , 'for'
++  , 'while'
++  , 'if'
++  , 'else'
++  , 'in'
++  , 'out'
++  , 'inout'
++  , 'float'
++  , 'int'
++  , 'void'
++  , 'bool'
++  , 'true'
++  , 'false'
++  , 'discard'
++  , 'return'
++  , 'mat2'
++  , 'mat3'
++  , 'mat4'
++  , 'vec2'
++  , 'vec3'
++  , 'vec4'
++  , 'ivec2'
++  , 'ivec3'
++  , 'ivec4'
++  , 'bvec2'
++  , 'bvec3'
++  , 'bvec4'
++  , 'sampler1D'
++  , 'sampler2D'
++  , 'sampler3D'
++  , 'samplerCube'
++  , 'sampler1DShadow'
++  , 'sampler2DShadow'
++  , 'struct'
++
++  // future
++  , 'asm'
++  , 'class'
++  , 'union'
++  , 'enum'
++  , 'typedef'
++  , 'template'
++  , 'this'
++  , 'packed'
++  , 'goto'
++  , 'switch'
++  , 'default'
++  , 'inline'
++  , 'noinline'
++  , 'volatile'
++  , 'public'
++  , 'static'
++  , 'extern'
++  , 'external'
++  , 'interface'
++  , 'long'
++  , 'short'
++  , 'double'
++  , 'half'
++  , 'fixed'
++  , 'unsigned'
++  , 'input'
++  , 'output'
++  , 'hvec2'
++  , 'hvec3'
++  , 'hvec4'
++  , 'dvec2'
++  , 'dvec3'
++  , 'dvec4'
++  , 'fvec2'
++  , 'fvec3'
++  , 'fvec4'
++  , 'sampler2DRect'
++  , 'sampler3DRect'
++  , 'sampler2DRectShadow'
++  , 'sizeof'
++  , 'cast'
++  , 'namespace'
++  , 'using'
++]
++
++},{}],162:[function(require,module,exports){
++module.exports = [
++    '<<='
++  , '>>='
++  , '++'
++  , '--'
++  , '<<'
++  , '>>'
++  , '<='
++  , '>='
++  , '=='
++  , '!='
++  , '&&'
++  , '||'
++  , '+='
++  , '-='
++  , '*='
++  , '/='
++  , '%='
++  , '&='
++  , '^^'
++  , '^='
++  , '|='
++  , '('
++  , ')'
++  , '['
++  , ']'
++  , '.'
++  , '!'
++  , '~'
++  , '*'
++  , '/'
++  , '%'
++  , '+'
++  , '-'
++  , '<'
++  , '>'
++  , '&'
++  , '^'
++  , '|'
++  , '?'
++  , ':'
++  , '='
++  , ','
++  , ';'
++  , '{'
++  , '}'
++]
+ 
+-var IDENTITY = [
+-  1, 0, 0, 0,
+-  0, 1, 0, 0,
+-  0, 0, 1, 0,
+-  0, 0, 0, 1 ]
++},{}],163:[function(require,module,exports){
++var tokenize = require('./index')
+ 
+-var QUAD = [
+-  [0, 0],
+-  [0, 1],
+-  [1, 0],
+-  [1, 1],
+-  [1, 0],
+-  [0, 1]
+-]
++module.exports = tokenizeString
+ 
+-var PERMUTATIONS = [
+-  [0, 0, 0, 0, 0, 0, 0, 0, 0],
+-  [0, 0, 0, 0, 0, 0, 0, 0, 0],
+-  [0, 0, 0, 0, 0, 0, 0, 0, 0]
+-]
++function tokenizeString(str, opt) {
++  var generator = tokenize(opt)
++  var tokens = []
+ 
+-;(function () {
+-  for (var i = 0; i < 3; ++i) {
+-    var p = PERMUTATIONS[i]
+-    var u = (i + 1) % 3
+-    var v = (i + 2) % 3
+-    p[u + 0] = 1
+-    p[v + 3] = 1
+-    p[i + 6] = 1
+-  }
+-})()
++  tokens = tokens.concat(generator(str))
++  tokens = tokens.concat(generator(null))
+ 
+-function SurfacePickResult (position, index, uv, level, dataCoordinate) {
+-  this.position = position
+-  this.index = index
+-  this.uv = uv
+-  this.level = level
+-  this.dataCoordinate = dataCoordinate
++  return tokens
+ }
+ 
+-var N_COLORS = 265
++},{"./index":157}],164:[function(require,module,exports){
++exports.read = function (buffer, offset, isLE, mLen, nBytes) {
++  var e, m
++  var eLen = nBytes * 8 - mLen - 1
++  var eMax = (1 << eLen) - 1
++  var eBias = eMax >> 1
++  var nBits = -7
++  var i = isLE ? (nBytes - 1) : 0
++  var d = isLE ? -1 : 1
++  var s = buffer[offset + i]
+ 
+-function genColormap (name) {
+-  var x = pack([colormap({
+-    colormap: name,
+-    nshades: N_COLORS,
+-    format: 'rgba'
+-  }).map(function (c) {
+-    return [c[0], c[1], c[2], 255 * c[3]]
+-  })])
+-  ops.divseq(x, 255.0)
+-  return x
+-}
++  i += d
+ 
+-function SurfacePlot (
+-  gl,
+-  shape,
+-  bounds,
+-  shader,
+-  pickShader,
+-  coordinates,
+-  vao,
+-  colorMap,
+-  contourShader,
+-  contourPickShader,
+-  contourBuffer,
+-  contourVAO,
+-  dynamicBuffer,
+-  dynamicVAO) {
+-  this.gl = gl
+-  this.shape = shape
+-  this.bounds = bounds
+-  this.intensityBounds = [];
++  e = s & ((1 << (-nBits)) - 1)
++  s >>= (-nBits)
++  nBits += eLen
++  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+ 
+-  this._shader = shader
+-  this._pickShader = pickShader
+-  this._coordinateBuffer = coordinates
+-  this._vao = vao
+-  this._colorMap = colorMap
++  m = e & ((1 << (-nBits)) - 1)
++  e >>= (-nBits)
++  nBits += mLen
++  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+ 
+-  this._contourShader = contourShader
+-  this._contourPickShader = contourPickShader
+-  this._contourBuffer = contourBuffer
+-  this._contourVAO = contourVAO
+-  this._contourOffsets = [[], [], []]
+-  this._contourCounts = [[], [], []]
+-  this._vertexCount = 0
++  if (e === 0) {
++    e = 1 - eBias
++  } else if (e === eMax) {
++    return m ? NaN : ((s ? -1 : 1) * Infinity)
++  } else {
++    m = m + Math.pow(2, mLen)
++    e = e - eBias
++  }
++  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
++}
+ 
+-  this._pickResult = new SurfacePickResult([0, 0, 0], [0, 0], [0, 0], [0, 0, 0], [0, 0, 0])
++exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
++  var e, m, c
++  var eLen = nBytes * 8 - mLen - 1
++  var eMax = (1 << eLen) - 1
++  var eBias = eMax >> 1
++  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
++  var i = isLE ? 0 : (nBytes - 1)
++  var d = isLE ? 1 : -1
++  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+ 
+-  this._dynamicBuffer = dynamicBuffer
+-  this._dynamicVAO = dynamicVAO
+-  this._dynamicOffsets = [0, 0, 0]
+-  this._dynamicCounts = [0, 0, 0]
++  value = Math.abs(value)
+ 
+-  this.contourWidth = [ 1, 1, 1 ]
+-  this.contourLevels = [[1], [1], [1]]
+-  this.contourTint = [0, 0, 0]
+-  this.contourColor = [[0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1]]
++  if (isNaN(value) || value === Infinity) {
++    m = isNaN(value) ? 1 : 0
++    e = eMax
++  } else {
++    e = Math.floor(Math.log(value) / Math.LN2)
++    if (value * (c = Math.pow(2, -e)) < 1) {
++      e--
++      c *= 2
++    }
++    if (e + eBias >= 1) {
++      value += rt / c
++    } else {
++      value += rt * Math.pow(2, 1 - eBias)
++    }
++    if (value * c >= 2) {
++      e++
++      c /= 2
++    }
+ 
+-  this.showContour = true
+-  this.showSurface = true
++    if (e + eBias >= eMax) {
++      m = 0
++      e = eMax
++    } else if (e + eBias >= 1) {
++      m = (value * c - 1) * Math.pow(2, mLen)
++      e = e + eBias
++    } else {
++      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
++      e = 0
++    }
++  }
+ 
+-  this.enableHighlight = [true, true, true]
+-  this.highlightColor = [[0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1]]
+-  this.highlightTint = [ 1, 1, 1 ]
+-  this.highlightLevel = [-1, -1, -1]
++  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+ 
+-  // Dynamic contour options
+-  this.enableDynamic = [ true, true, true ]
+-  this.dynamicLevel = [ NaN, NaN, NaN ]
+-  this.dynamicColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ]
+-  this.dynamicTint = [ 1, 1, 1 ]
+-  this.dynamicWidth = [ 1, 1, 1 ]
++  e = (e << mLen) | m
++  eLen += mLen
++  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+ 
+-  this.axesBounds = [[Infinity, Infinity, Infinity], [-Infinity, -Infinity, -Infinity]]
+-  this.surfaceProject = [ false, false, false ]
+-  this.contourProject = [[ false, false, false ],
+-    [ false, false, false ],
+-    [ false, false, false ]]
++  buffer[offset + i - d] |= s * 128
++}
+ 
+-  this.colorBounds = [ false, false ]
++},{}],165:[function(require,module,exports){
++"use strict"
+ 
+-  // Store xyz fields, need this for picking
+-  this._field = [
+-    ndarray(pool.mallocFloat(1024), [0, 0]),
+-    ndarray(pool.mallocFloat(1024), [0, 0]),
+-    ndarray(pool.mallocFloat(1024), [0, 0]) ]
++//High level idea:
++// 1. Use Clarkson's incremental construction to find convex hull
++// 2. Point location in triangulation by jump and walk
+ 
+-  this.pickId = 1
+-  this.clipBounds = [[-Infinity, -Infinity, -Infinity], [Infinity, Infinity, Infinity]]
++module.exports = incrementalConvexHull
+ 
+-  this.snapToData = false
++var orient = require("robust-orientation")
++var compareCell = require("simplicial-complex").compareCells
+ 
+-  this.opacity = 1.0
++function compareInt(a, b) {
++  return a - b
++}
+ 
+-  this.lightPosition = [10, 10000, 0]
+-  this.ambientLight = 0.8
+-  this.diffuseLight = 0.8
+-  this.specularLight = 2.0
+-  this.roughness = 0.5
+-  this.fresnel = 1.5
++function Simplex(vertices, adjacent, boundary) {
++  this.vertices = vertices
++  this.adjacent = adjacent
++  this.boundary = boundary
++  this.lastVisited = -1
++}
+ 
+-  this.dirty = true
++Simplex.prototype.flip = function() {
++  var t = this.vertices[0]
++  this.vertices[0] = this.vertices[1]
++  this.vertices[1] = t
++  var u = this.adjacent[0]
++  this.adjacent[0] = this.adjacent[1]
++  this.adjacent[1] = u
+ }
+ 
+-var proto = SurfacePlot.prototype
++function GlueFacet(vertices, cell, index) {
++  this.vertices = vertices
++  this.cell = cell
++  this.index = index
++}
+ 
+-proto.isTransparent = function () {
+-  return this.opacity < 1
++function compareGlue(a, b) {
++  return compareCell(a.vertices, b.vertices)
+ }
+ 
+-proto.isOpaque = function () {
+-  if (this.opacity >= 1) {
+-    return true
+-  }
+-  for (var i = 0; i < 3; ++i) {
+-    if (this._contourCounts[i].length > 0 || this._dynamicCounts[i] > 0) {
+-      return true
++function bakeOrient(d) {
++  var code = ["function orient(){var tuple=this.tuple;return test("]
++  for(var i=0; i<=d; ++i) {
++    if(i > 0) {
++      code.push(",")
+     }
++    code.push("tuple[", i, "]")
+   }
+-  return false
++  code.push(")}return orient")
++  var proc = new Function("test", code.join(""))
++  var test = orient[d+1]
++  if(!test) {
++    test = orient
++  }
++  return proc(test)
+ }
+ 
+-proto.pickSlots = 1
++var BAKED = []
+ 
+-proto.setPickBase = function (id) {
+-  this.pickId = id
+-}
++function Triangulation(dimension, vertices, simplices) {
++  this.dimension = dimension
++  this.vertices = vertices
++  this.simplices = simplices
++  this.interior = simplices.filter(function(c) {
++    return !c.boundary
++  })
+ 
+-var ZERO_VEC = [0, 0, 0]
++  this.tuple = new Array(dimension+1)
++  for(var i=0; i<=dimension; ++i) {
++    this.tuple[i] = this.vertices[i]
++  }
+ 
+-var PROJECT_DATA = {
+-  showSurface: false,
+-  showContour: false,
+-  projections: [IDENTITY.slice(), IDENTITY.slice(), IDENTITY.slice()],
+-  clipBounds: [
+-    [[0, 0, 0], [0, 0, 0]],
+-    [[0, 0, 0], [0, 0, 0]],
+-    [[0, 0, 0], [0, 0, 0]]]
++  var o = BAKED[dimension]
++  if(!o) {
++    o = BAKED[dimension] = bakeOrient(dimension)
++  }
++  this.orient = o
+ }
+ 
+-function computeProjectionData (camera, obj) {
+-  var i, j, k
+-
+-  // Compute cube properties
+-  var cubeAxis = (obj.axes && obj.axes.lastCubeProps.axis) || ZERO_VEC
++var proto = Triangulation.prototype
+ 
+-  var showSurface = obj.showSurface
+-  var showContour = obj.showContour
++//Degenerate situation where we are on boundary, but coplanar to face
++proto.handleBoundaryDegeneracy = function(cell, point) {
++  var d = this.dimension
++  var n = this.vertices.length - 1
++  var tuple = this.tuple
++  var verts = this.vertices
+ 
+-  for (i = 0; i < 3; ++i) {
+-    showSurface = showSurface || obj.surfaceProject[i]
+-    for (j = 0; j < 3; ++j) {
+-      showContour = showContour || obj.contourProject[i][j]
++  //Dumb solution: Just do dfs from boundary cell until we find any peak, or terminate
++  var toVisit = [ cell ]
++  cell.lastVisited = -n
++  while(toVisit.length > 0) {
++    cell = toVisit.pop()
++    var cellVerts = cell.vertices
++    var cellAdj = cell.adjacent
++    for(var i=0; i<=d; ++i) {
++      var neighbor = cellAdj[i]
++      if(!neighbor.boundary || neighbor.lastVisited <= -n) {
++        continue
++      }
++      var nv = neighbor.vertices
++      for(var j=0; j<=d; ++j) {
++        var vv = nv[j]
++        if(vv < 0) {
++          tuple[j] = point
++        } else {
++          tuple[j] = verts[vv]
++        }
++      }
++      var o = this.orient()
++      if(o > 0) {
++        return neighbor
++      }
++      neighbor.lastVisited = -n
++      if(o === 0) {
++        toVisit.push(neighbor)
++      }
+     }
+   }
++  return null
++}
+ 
+-  for (i = 0; i < 3; ++i) {
+-    // Construct projection onto axis
+-    var axisSquish = PROJECT_DATA.projections[i]
+-    for (j = 0; j < 16; ++j) {
+-      axisSquish[j] = 0
+-    }
+-    for (j = 0; j < 4; ++j) {
+-      axisSquish[5 * j] = 1
++proto.walk = function(point, random) {
++  //Alias local properties
++  var n = this.vertices.length - 1
++  var d = this.dimension
++  var verts = this.vertices
++  var tuple = this.tuple
++
++  //Compute initial jump cell
++  var initIndex = random ? (this.interior.length * Math.random())|0 : (this.interior.length-1)
++  var cell = this.interior[ initIndex ]
++
++  //Start walking
++outerLoop:
++  while(!cell.boundary) {
++    var cellVerts = cell.vertices
++    var cellAdj = cell.adjacent
++
++    for(var i=0; i<=d; ++i) {
++      tuple[i] = verts[cellVerts[i]]
+     }
+-    axisSquish[5 * i] = 0
+-    axisSquish[12 + i] = obj.axesBounds[+(cubeAxis[i] > 0)][i]
+-    multiply(axisSquish, camera.model, axisSquish)
++    cell.lastVisited = n
+ 
+-    var nclipBounds = PROJECT_DATA.clipBounds[i]
+-    for (k = 0; k < 2; ++k) {
+-      for (j = 0; j < 3; ++j) {
+-        nclipBounds[k][j] = camera.clipBounds[k][j]
++    //Find farthest adjacent cell
++    for(var i=0; i<=d; ++i) {
++      var neighbor = cellAdj[i]
++      if(neighbor.lastVisited >= n) {
++        continue
++      }
++      var prev = tuple[i]
++      tuple[i] = point
++      var o = this.orient()
++      tuple[i] = prev
++      if(o < 0) {
++        cell = neighbor
++        continue outerLoop
++      } else {
++        if(!neighbor.boundary) {
++          neighbor.lastVisited = n
++        } else {
++          neighbor.lastVisited = -n
++        }
+       }
+     }
+-    nclipBounds[0][i] = -1e8
+-    nclipBounds[1][i] = 1e8
++    return
+   }
+ 
+-  PROJECT_DATA.showSurface = showSurface
+-  PROJECT_DATA.showContour = showContour
+-
+-  return PROJECT_DATA
++  return cell
+ }
+ 
+-var UNIFORMS = {
+-  model: IDENTITY,
+-  view: IDENTITY,
+-  projection: IDENTITY,
+-  inverseModel: IDENTITY.slice(),
+-  lowerBound: [0, 0, 0],
+-  upperBound: [0, 0, 0],
+-  colorMap: 0,
+-  clipBounds: [[0, 0, 0], [0, 0, 0]],
+-  height: 0.0,
+-  contourTint: 0,
+-  contourColor: [0, 0, 0, 1],
+-  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
+-  zOffset: -1e-4,
+-  kambient: 1,
+-  kdiffuse: 1,
+-  kspecular: 1,
+-  lightPosition: [1000, 1000, 1000],
+-  eyePosition: [0, 0, 0],
+-  roughness: 1,
+-  fresnel: 1,
+-  opacity: 1
+-}
++proto.addPeaks = function(point, cell) {
++  var n = this.vertices.length - 1
++  var d = this.dimension
++  var verts = this.vertices
++  var tuple = this.tuple
++  var interior = this.interior
++  var simplices = this.simplices
+ 
+-var MATRIX_INVERSE = IDENTITY.slice()
+-var DEFAULT_PERM = [1, 0, 0, 0, 1, 0, 0, 0, 1]
++  //Walking finished at boundary, time to add peaks
++  var tovisit = [ cell ]
+ 
+-function drawCore (params, transparent) {
+-  params = params || {}
+-  var gl = this.gl
++  //Stretch initial boundary cell into a peak
++  cell.lastVisited = n
++  cell.vertices[cell.vertices.indexOf(-1)] = n
++  cell.boundary = false
++  interior.push(cell)
+ 
+-  gl.disable(gl.CULL_FACE)
++  //Record a list of all new boundaries created by added peaks so we can glue them together when we are all done
++  var glueFacets = []
++
++  //Do a traversal of the boundary walking outward from starting peak
++  while(tovisit.length > 0) {
++    //Pop off peak and walk over adjacent cells
++    var cell = tovisit.pop()
++    var cellVerts = cell.vertices
++    var cellAdj = cell.adjacent
++    var indexOfN = cellVerts.indexOf(n)
++    if(indexOfN < 0) {
++      continue
++    }
++
++    for(var i=0; i<=d; ++i) {
++      if(i === indexOfN) {
++        continue
++      }
++
++      //For each boundary neighbor of the cell
++      var neighbor = cellAdj[i]
++      if(!neighbor.boundary || neighbor.lastVisited >= n) {
++        continue
++      }
++
++      var nv = neighbor.vertices
++
++      //Test if neighbor is a peak
++      if(neighbor.lastVisited !== -n) {      
++        //Compute orientation of p relative to each boundary peak
++        var indexOfNeg1 = 0
++        for(var j=0; j<=d; ++j) {
++          if(nv[j] < 0) {
++            indexOfNeg1 = j
++            tuple[j] = point
++          } else {
++            tuple[j] = verts[nv[j]]
++          }
++        }
++        var o = this.orient()
++
++        //Test if neighbor cell is also a peak
++        if(o > 0) {
++          nv[indexOfNeg1] = n
++          neighbor.boundary = false
++          interior.push(neighbor)
++          tovisit.push(neighbor)
++          neighbor.lastVisited = n
++          continue
++        } else {
++          neighbor.lastVisited = -n
++        }
++      }
++
++      var na = neighbor.adjacent
++
++      //Otherwise, replace neighbor with new face
++      var vverts = cellVerts.slice()
++      var vadj = cellAdj.slice()
++      var ncell = new Simplex(vverts, vadj, true)
++      simplices.push(ncell)
+ 
+-  this._colorMap.bind(0)
++      //Connect to neighbor
++      var opposite = na.indexOf(cell)
++      if(opposite < 0) {
++        continue
++      }
++      na[opposite] = ncell
++      vadj[indexOfN] = neighbor
+ 
+-  var uniforms = UNIFORMS
+-  uniforms.model = params.model || IDENTITY
+-  uniforms.view = params.view || IDENTITY
+-  uniforms.projection = params.projection || IDENTITY
+-  uniforms.lowerBound = [this.bounds[0][0], this.bounds[0][1], this.colorBounds[0] || this.bounds[0][2]]
+-  uniforms.upperBound = [this.bounds[1][0], this.bounds[1][1], this.colorBounds[1] || this.bounds[1][2]]
+-  uniforms.contourColor = this.contourColor[0]
++      //Connect to cell
++      vverts[i] = -1
++      vadj[i] = cell
++      cellAdj[i] = ncell
+ 
+-  uniforms.inverseModel = invert(uniforms.inverseModel, uniforms.model)
++      //Flip facet
++      ncell.flip()
+ 
+-  for (var i = 0; i < 2; ++i) {
+-    var clipClamped = uniforms.clipBounds[i]
+-    for (var j = 0; j < 3; ++j) {
+-      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
++      //Add to glue list
++      for(var j=0; j<=d; ++j) {
++        var uu = vverts[j]
++        if(uu < 0 || uu === n) {
++          continue
++        }
++        var nface = new Array(d-1)
++        var nptr = 0
++        for(var k=0; k<=d; ++k) {
++          var vv = vverts[k]
++          if(vv < 0 || k === j) {
++            continue
++          }
++          nface[nptr++] = vv
++        }
++        glueFacets.push(new GlueFacet(nface, ncell, j))
++      }
+     }
+   }
+ 
+-  uniforms.kambient = this.ambientLight
+-  uniforms.kdiffuse = this.diffuseLight
+-  uniforms.kspecular = this.specularLight
+-
+-  uniforms.roughness = this.roughness
+-  uniforms.fresnel = this.fresnel
+-  uniforms.opacity = this.opacity
++  //Glue boundary facets together
++  glueFacets.sort(compareGlue)
+ 
+-  uniforms.height = 0.0
+-  uniforms.permutation = DEFAULT_PERM
++  for(var i=0; i+1<glueFacets.length; i+=2) {
++    var a = glueFacets[i]
++    var b = glueFacets[i+1]
++    var ai = a.index
++    var bi = b.index
++    if(ai < 0 || bi < 0) {
++      continue
++    }
++    a.cell.adjacent[a.index] = b.cell
++    b.cell.adjacent[b.index] = a.cell
++  }
++}
+ 
+-  // Compute camera matrix inverse
+-  var invCameraMatrix = MATRIX_INVERSE
+-  multiply(invCameraMatrix, uniforms.view, uniforms.model)
+-  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
+-  invert(invCameraMatrix, invCameraMatrix)
++proto.insert = function(point, random) {
++  //Add point
++  var verts = this.vertices
++  verts.push(point)
+ 
+-  for (i = 0; i < 3; ++i) {
+-    uniforms.eyePosition[i] = invCameraMatrix[12 + i] / invCameraMatrix[15]
++  var cell = this.walk(point, random)
++  if(!cell) {
++    return
+   }
+ 
+-  var w = invCameraMatrix[15]
+-  for (i = 0; i < 3; ++i) {
+-    w += this.lightPosition[i] * invCameraMatrix[4 * i + 3]
++  //Alias local properties
++  var d = this.dimension
++  var tuple = this.tuple
++
++  //Degenerate case: If point is coplanar to cell, then walk until we find a non-degenerate boundary
++  for(var i=0; i<=d; ++i) {
++    var vv = cell.vertices[i]
++    if(vv < 0) {
++      tuple[i] = point
++    } else {
++      tuple[i] = verts[vv]
++    }
+   }
+-  for (i = 0; i < 3; ++i) {
+-    var s = invCameraMatrix[12 + i]
+-    for (j = 0; j < 3; ++j) {
+-      s += invCameraMatrix[4 * j + i] * this.lightPosition[j]
++  var o = this.orient(tuple)
++  if(o < 0) {
++    return
++  } else if(o === 0) {
++    cell = this.handleBoundaryDegeneracy(cell, point)
++    if(!cell) {
++      return
+     }
+-    uniforms.lightPosition[i] = s / w
+   }
+ 
+-  var projectData = computeProjectionData(uniforms, this)
+-
+-  if (projectData.showSurface && (transparent === (this.opacity < 1))) {
+-    // Set up uniforms
+-    this._shader.bind()
+-    this._shader.uniforms = uniforms
+-
+-    // Draw it
+-    this._vao.bind()
+-
+-    if (this.showSurface && this._vertexCount) {
+-      this._vao.draw(gl.TRIANGLES, this._vertexCount)
+-    }
++  //Add peaks
++  this.addPeaks(point, cell)
++}
+ 
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      if (!this.surfaceProject[i] || !this.vertexCount) {
+-        continue
++//Extract all boundary cells
++proto.boundary = function() {
++  var d = this.dimension
++  var boundary = []
++  var cells = this.simplices
++  var nc = cells.length
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    if(c.boundary) {
++      var bcell = new Array(d)
++      var cv = c.vertices
++      var ptr = 0
++      var parity = 0
++      for(var j=0; j<=d; ++j) {
++        if(cv[j] >= 0) {
++          bcell[ptr++] = cv[j]
++        } else {
++          parity = j&1
++        }
+       }
+-      this._shader.uniforms.model = projectData.projections[i]
+-      this._shader.uniforms.clipBounds = projectData.clipBounds[i]
+-      this._vao.draw(gl.TRIANGLES, this._vertexCount)
++      if(parity === (d&1)) {
++        var t = bcell[0]
++        bcell[0] = bcell[1]
++        bcell[1] = t
++      }
++      boundary.push(bcell)
+     }
+-
+-    this._vao.unbind()
+   }
++  return boundary
++}
+ 
+-  if (projectData.showContour && !transparent) {
+-    var shader = this._contourShader
+-
+-    // Don't apply lighting to contours
+-    uniforms.kambient = 1.0
+-    uniforms.kdiffuse = 0.0
+-    uniforms.kspecular = 0.0
+-    uniforms.opacity = 1.0
+-
+-    shader.bind()
+-    shader.uniforms = uniforms
++function incrementalConvexHull(points, randomSearch) {
++  var n = points.length
++  if(n === 0) {
++    throw new Error("Must have at least d+1 points")
++  }
++  var d = points[0].length
++  if(n <= d) {
++    throw new Error("Must input at least d+1 points")
++  }
+ 
+-    // Draw contour lines
+-    var vao = this._contourVAO
+-    vao.bind()
++  //FIXME: This could be degenerate, but need to select d+1 non-coplanar points to bootstrap process
++  var initialSimplex = points.slice(0, d+1)
+ 
+-    // Draw contour levels
+-    for (i = 0; i < 3; ++i) {
+-      shader.uniforms.permutation = PERMUTATIONS[i]
+-      gl.lineWidth(this.contourWidth[i])
++  //Make sure initial simplex is positively oriented
++  var o = orient.apply(void 0, initialSimplex)
++  if(o === 0) {
++    throw new Error("Input not in general position")
++  }
++  var initialCoords = new Array(d+1)
++  for(var i=0; i<=d; ++i) {
++    initialCoords[i] = i
++  }
++  if(o < 0) {
++    initialCoords[0] = 1
++    initialCoords[1] = 0
++  }
+ 
+-      for (j = 0; j < this.contourLevels[i].length; ++j) {
+-        if (!this._contourCounts[i][j]) {
+-          continue
+-        }
+-        if (j === this.highlightLevel[i]) {
+-          shader.uniforms.contourColor = this.highlightColor[i]
+-          shader.uniforms.contourTint = this.highlightTint[i]
+-        } else if (j === 0 || (j - 1) === this.highlightLevel[i]) {
+-          shader.uniforms.contourColor = this.contourColor[i]
+-          shader.uniforms.contourTint = this.contourTint[i]
+-        }
+-        shader.uniforms.height = this.contourLevels[i][j]
+-        vao.draw(gl.LINES, this._contourCounts[i][j], this._contourOffsets[i][j])
++  //Create initial topological index, glue pointers together (kind of messy)
++  var initialCell = new Simplex(initialCoords, new Array(d+1), false)
++  var boundary = initialCell.adjacent
++  var list = new Array(d+2)
++  for(var i=0; i<=d; ++i) {
++    var verts = initialCoords.slice()
++    for(var j=0; j<=d; ++j) {
++      if(j === i) {
++        verts[j] = -1
+       }
+     }
+-
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      shader.uniforms.model = projectData.projections[i]
+-      shader.uniforms.clipBounds = projectData.clipBounds[i]
+-      for (j = 0; j < 3; ++j) {
+-        if (!this.contourProject[i][j]) {
+-          continue
+-        }
+-        shader.uniforms.permutation = PERMUTATIONS[j]
+-        gl.lineWidth(this.contourWidth[j])
+-        for (var k = 0; k < this.contourLevels[j].length; ++k) {
+-          if (k === this.highlightLevel[j]) {
+-            shader.uniforms.contourColor = this.highlightColor[j]
+-            shader.uniforms.contourTint = this.highlightTint[j]
+-          } else if (k === 0 || (k - 1) === this.highlightLevel[j]) {
+-            shader.uniforms.contourColor = this.contourColor[j]
+-            shader.uniforms.contourTint = this.contourTint[j]
+-          }
+-          shader.uniforms.height = this.contourLevels[j][k]
+-          vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
++    var t = verts[0]
++    verts[0] = verts[1]
++    verts[1] = t
++    var cell = new Simplex(verts, new Array(d+1), true)
++    boundary[i] = cell
++    list[i] = cell
++  }
++  list[d+1] = initialCell
++  for(var i=0; i<=d; ++i) {
++    var verts = boundary[i].vertices
++    var adj = boundary[i].adjacent
++    for(var j=0; j<=d; ++j) {
++      var v = verts[j]
++      if(v < 0) {
++        adj[j] = initialCell
++        continue
++      }
++      for(var k=0; k<=d; ++k) {
++        if(boundary[k].vertices.indexOf(v) < 0) {
++          adj[j] = boundary[k]
+         }
+       }
+     }
++  }
+ 
+-    // Draw dynamic contours
+-    vao = this._dynamicVAO
+-    vao.bind()
+-
+-    // Draw contour levels
+-    for (i = 0; i < 3; ++i) {
+-      if (this._dynamicCounts[i] === 0) {
+-        continue
+-      }
++  //Initialize triangles
++  var triangles = new Triangulation(d, initialSimplex, list)
+ 
+-      shader.uniforms.model = uniforms.model
+-      shader.uniforms.clipBounds = uniforms.clipBounds
+-      shader.uniforms.permutation = PERMUTATIONS[i]
+-      gl.lineWidth(this.dynamicWidth[i])
++  //Insert remaining points
++  var useRandom = !!randomSearch
++  for(var i=d+1; i<n; ++i) {
++    triangles.insert(points[i], useRandom)
++  }
++  
++  //Extract boundary cells
++  return triangles.boundary()
++}
++},{"robust-orientation":219,"simplicial-complex":229}],166:[function(require,module,exports){
++"use strict"
+ 
+-      shader.uniforms.contourColor = this.dynamicColor[i]
+-      shader.uniforms.contourTint = this.dynamicTint[i]
+-      shader.uniforms.height = this.dynamicLevel[i]
+-      vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
++var bounds = require("binary-search-bounds")
+ 
+-      for (j = 0; j < 3; ++j) {
+-        if (!this.contourProject[j][i]) {
+-          continue
+-        }
++var NOT_FOUND = 0
++var SUCCESS = 1
++var EMPTY = 2
+ 
+-        shader.uniforms.model = projectData.projections[j]
+-        shader.uniforms.clipBounds = projectData.clipBounds[j]
+-        vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
+-      }
+-    }
++module.exports = createWrapper
+ 
+-    vao.unbind()
+-  }
++function IntervalTreeNode(mid, left, right, leftPoints, rightPoints) {
++  this.mid = mid
++  this.left = left
++  this.right = right
++  this.leftPoints = leftPoints
++  this.rightPoints = rightPoints
++  this.count = (left ? left.count : 0) + (right ? right.count : 0) + leftPoints.length
+ }
+ 
+-proto.draw = function (params) {
+-  return drawCore.call(this, params, false)
+-}
++var proto = IntervalTreeNode.prototype
+ 
+-proto.drawTransparent = function (params) {
+-  return drawCore.call(this, params, true)
++function copy(a, b) {
++  a.mid = b.mid
++  a.left = b.left
++  a.right = b.right
++  a.leftPoints = b.leftPoints
++  a.rightPoints = b.rightPoints
++  a.count = b.count
+ }
+ 
+-var PICK_UNIFORMS = {
+-  model: IDENTITY,
+-  view: IDENTITY,
+-  projection: IDENTITY,
+-  inverseModel: IDENTITY,
+-  clipBounds: [[0, 0, 0], [0, 0, 0]],
+-  height: 0.0,
+-  shape: [0, 0],
+-  pickId: 0,
+-  lowerBound: [0, 0, 0],
+-  upperBound: [0, 0, 0],
+-  zOffset: 0.0,
+-  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
+-  lightPosition: [0, 0, 0],
+-  eyePosition: [0, 0, 0]
++function rebuild(node, intervals) {
++  var ntree = createIntervalTree(intervals)
++  node.mid = ntree.mid
++  node.left = ntree.left
++  node.right = ntree.right
++  node.leftPoints = ntree.leftPoints
++  node.rightPoints = ntree.rightPoints
++  node.count = ntree.count
+ }
+ 
+-proto.drawPick = function (params) {
+-  params = params || {}
+-  var gl = this.gl
+-  gl.disable(gl.CULL_FACE)
+-
+-  var uniforms = PICK_UNIFORMS
+-  uniforms.model = params.model || IDENTITY
+-  uniforms.view = params.view || IDENTITY
+-  uniforms.projection = params.projection || IDENTITY
+-  uniforms.shape = this._field[2].shape
+-  uniforms.pickId = this.pickId / 255.0
+-  uniforms.lowerBound = this.bounds[0]
+-  uniforms.upperBound = this.bounds[1]
+-  uniforms.permutation = DEFAULT_PERM
++function rebuildWithInterval(node, interval) {
++  var intervals = node.intervals([])
++  intervals.push(interval)
++  rebuild(node, intervals)    
++}
+ 
+-  for (var i = 0; i < 2; ++i) {
+-    var clipClamped = uniforms.clipBounds[i]
+-    for (var j = 0; j < 3; ++j) {
+-      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
+-    }
++function rebuildWithoutInterval(node, interval) {
++  var intervals = node.intervals([])
++  var idx = intervals.indexOf(interval)
++  if(idx < 0) {
++    return NOT_FOUND
+   }
++  intervals.splice(idx, 1)
++  rebuild(node, intervals)
++  return SUCCESS
++}
+ 
+-  var projectData = computeProjectionData(uniforms, this)
+-
+-  if (projectData.showSurface) {
+-    // Set up uniforms
+-    this._pickShader.bind()
+-    this._pickShader.uniforms = uniforms
+-
+-    // Draw it
+-    this._vao.bind()
+-    this._vao.draw(gl.TRIANGLES, this._vertexCount)
++proto.intervals = function(result) {
++  result.push.apply(result, this.leftPoints)
++  if(this.left) {
++    this.left.intervals(result)
++  }
++  if(this.right) {
++    this.right.intervals(result)
++  }
++  return result
++}
+ 
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      if (!this.surfaceProject[i]) {
+-        continue
++proto.insert = function(interval) {
++  var weight = this.count - this.leftPoints.length
++  this.count += 1
++  if(interval[1] < this.mid) {
++    if(this.left) {
++      if(4*(this.left.count+1) > 3*(weight+1)) {
++        rebuildWithInterval(this, interval)
++      } else {
++        this.left.insert(interval)
+       }
+-      this._pickShader.uniforms.model = projectData.projections[i]
+-      this._pickShader.uniforms.clipBounds = projectData.clipBounds[i]
+-      this._vao.draw(gl.TRIANGLES, this._vertexCount)
++    } else {
++      this.left = createIntervalTree([interval])
+     }
+-
+-    this._vao.unbind()
++  } else if(interval[0] > this.mid) {
++    if(this.right) {
++      if(4*(this.right.count+1) > 3*(weight+1)) {
++        rebuildWithInterval(this, interval)
++      } else {
++        this.right.insert(interval)
++      }
++    } else {
++      this.right = createIntervalTree([interval])
++    }
++  } else {
++    var l = bounds.ge(this.leftPoints, interval, compareBegin)
++    var r = bounds.ge(this.rightPoints, interval, compareEnd)
++    this.leftPoints.splice(l, 0, interval)
++    this.rightPoints.splice(r, 0, interval)
+   }
++}
+ 
+-  if (projectData.showContour) {
+-    var shader = this._contourPickShader
+-
+-    shader.bind()
+-    shader.uniforms = uniforms
+-
+-    var vao = this._contourVAO
+-    vao.bind()
+-
+-    for (j = 0; j < 3; ++j) {
+-      gl.lineWidth(this.contourWidth[j])
+-      shader.uniforms.permutation = PERMUTATIONS[j]
+-      for (i = 0; i < this.contourLevels[j].length; ++i) {
+-        if (this._contourCounts[j][i]) {
+-          shader.uniforms.height = this.contourLevels[j][i]
+-          vao.draw(gl.LINES, this._contourCounts[j][i], this._contourOffsets[j][i])
++proto.remove = function(interval) {
++  var weight = this.count - this.leftPoints
++  if(interval[1] < this.mid) {
++    if(!this.left) {
++      return NOT_FOUND
++    }
++    var rw = this.right ? this.right.count : 0
++    if(4 * rw > 3 * (weight-1)) {
++      return rebuildWithoutInterval(this, interval)
++    }
++    var r = this.left.remove(interval)
++    if(r === EMPTY) {
++      this.left = null
++      this.count -= 1
++      return SUCCESS
++    } else if(r === SUCCESS) {
++      this.count -= 1
++    }
++    return r
++  } else if(interval[0] > this.mid) {
++    if(!this.right) {
++      return NOT_FOUND
++    }
++    var lw = this.left ? this.left.count : 0
++    if(4 * lw > 3 * (weight-1)) {
++      return rebuildWithoutInterval(this, interval)
++    }
++    var r = this.right.remove(interval)
++    if(r === EMPTY) {
++      this.right = null
++      this.count -= 1
++      return SUCCESS
++    } else if(r === SUCCESS) {
++      this.count -= 1
++    }
++    return r
++  } else {
++    if(this.count === 1) {
++      if(this.leftPoints[0] === interval) {
++        return EMPTY
++      } else {
++        return NOT_FOUND
++      }
++    }
++    if(this.leftPoints.length === 1 && this.leftPoints[0] === interval) {
++      if(this.left && this.right) {
++        var p = this
++        var n = this.left
++        while(n.right) {
++          p = n
++          n = n.right
++        }
++        if(p === this) {
++          n.right = this.right
++        } else {
++          var l = this.left
++          var r = this.right
++          p.count -= n.count
++          p.right = n.left
++          n.left = l
++          n.right = r
+         }
++        copy(this, n)
++        this.count = (this.left?this.left.count:0) + (this.right?this.right.count:0) + this.leftPoints.length
++      } else if(this.left) {
++        copy(this, this.left)
++      } else {
++        copy(this, this.right)
+       }
++      return SUCCESS
+     }
+-
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      shader.uniforms.model = projectData.projections[i]
+-      shader.uniforms.clipBounds = projectData.clipBounds[i]
+-
+-      for (j = 0; j < 3; ++j) {
+-        if (!this.contourProject[i][j]) {
+-          continue
+-        }
+-
+-        shader.uniforms.permutation = PERMUTATIONS[j]
+-        gl.lineWidth(this.contourWidth[j])
+-        for (var k = 0; k < this.contourLevels[j].length; ++k) {
+-          if (this._contourCounts[j][k]) {
+-            shader.uniforms.height = this.contourLevels[j][k]
+-            vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
++    for(var l = bounds.ge(this.leftPoints, interval, compareBegin); l<this.leftPoints.length; ++l) {
++      if(this.leftPoints[l][0] !== interval[0]) {
++        break
++      }
++      if(this.leftPoints[l] === interval) {
++        this.count -= 1
++        this.leftPoints.splice(l, 1)
++        for(var r = bounds.ge(this.rightPoints, interval, compareEnd); r<this.rightPoints.length; ++r) {
++          if(this.rightPoints[r][1] !== interval[1]) {
++            break
++          } else if(this.rightPoints[r] === interval) {
++            this.rightPoints.splice(r, 1)
++            return SUCCESS
+           }
+         }
+       }
+     }
++    return NOT_FOUND
++  }
++}
+ 
+-    vao.unbind()
++function reportLeftRange(arr, hi, cb) {
++  for(var i=0; i<arr.length && arr[i][0] <= hi; ++i) {
++    var r = cb(arr[i])
++    if(r) { return r }
+   }
+ }
+ 
+-proto.pick = function (selection) {
+-  if (!selection) {
+-    return null
++function reportRightRange(arr, lo, cb) {
++  for(var i=arr.length-1; i>=0 && arr[i][1] >= lo; --i) {
++    var r = cb(arr[i])
++    if(r) { return r }
+   }
++}
+ 
+-  if (selection.id !== this.pickId) {
+-    return null
++function reportRange(arr, cb) {
++  for(var i=0; i<arr.length; ++i) {
++    var r = cb(arr[i])
++    if(r) { return r }
+   }
++}
+ 
+-  var shape = this._field[2].shape
++proto.queryPoint = function(x, cb) {
++  if(x < this.mid) {
++    if(this.left) {
++      var r = this.left.queryPoint(x, cb)
++      if(r) { return r }
++    }
++    return reportLeftRange(this.leftPoints, x, cb)
++  } else if(x > this.mid) {
++    if(this.right) {
++      var r = this.right.queryPoint(x, cb)
++      if(r) { return r }
++    }
++    return reportRightRange(this.rightPoints, x, cb)
++  } else {
++    return reportRange(this.leftPoints, cb)
++  }
++}
+ 
+-  var result = this._pickResult
++proto.queryInterval = function(lo, hi, cb) {
++  if(lo < this.mid && this.left) {
++    var r = this.left.queryInterval(lo, hi, cb)
++    if(r) { return r }
++  }
++  if(hi > this.mid && this.right) {
++    var r = this.right.queryInterval(lo, hi, cb)
++    if(r) { return r }
++  }
++  if(hi < this.mid) {
++    return reportLeftRange(this.leftPoints, hi, cb)
++  } else if(lo > this.mid) {
++    return reportRightRange(this.rightPoints, lo, cb)
++  } else {
++    return reportRange(this.leftPoints, cb)
++  }
++}
+ 
+-  // Compute uv coordinate
+-  var x = shape[0] * (selection.value[0] + (selection.value[2] >> 4) / 16.0) / 255.0
+-  var ix = Math.floor(x)
+-  var fx = x - ix
++function compareNumbers(a, b) {
++  return a - b
++}
+ 
+-  var y = shape[1] * (selection.value[1] + (selection.value[2] & 15) / 16.0) / 255.0
+-  var iy = Math.floor(y)
+-  var fy = y - iy
++function compareBegin(a, b) {
++  var d = a[0] - b[0]
++  if(d) { return d }
++  return a[1] - b[1]
++}
+ 
+-  ix += 1
+-  iy += 1
++function compareEnd(a, b) {
++  var d = a[1] - b[1]
++  if(d) { return d }
++  return a[0] - b[0]
++}
+ 
+-  // Compute xyz coordinate
+-  var pos = result.position
+-  pos[0] = pos[1] = pos[2] = 0
+-  for (var dx = 0; dx < 2; ++dx) {
+-    var s = dx ? fx : 1.0 - fx
+-    for (var dy = 0; dy < 2; ++dy) {
+-      var t = dy ? fy : 1.0 - fy
++function createIntervalTree(intervals) {
++  if(intervals.length === 0) {
++    return null
++  }
++  var pts = []
++  for(var i=0; i<intervals.length; ++i) {
++    pts.push(intervals[i][0], intervals[i][1])
++  }
++  pts.sort(compareNumbers)
+ 
+-      var r = ix + dx
+-      var c = iy + dy
+-      var w = s * t
++  var mid = pts[pts.length>>1]
+ 
+-      for (var i = 0; i < 3; ++i) {
+-        pos[i] += this._field[i].get(r, c) * w
+-      }
++  var leftIntervals = []
++  var rightIntervals = []
++  var centerIntervals = []
++  for(var i=0; i<intervals.length; ++i) {
++    var s = intervals[i]
++    if(s[1] < mid) {
++      leftIntervals.push(s)
++    } else if(mid < s[0]) {
++      rightIntervals.push(s)
++    } else {
++      centerIntervals.push(s)
+     }
+   }
+ 
+-  // Find closest level
+-  var levelIndex = this._pickResult.level
+-  for (var j = 0; j < 3; ++j) {
+-    levelIndex[j] = bsearch.le(this.contourLevels[j], pos[j])
+-    if (levelIndex[j] < 0) {
+-      if (this.contourLevels[j].length > 0) {
+-        levelIndex[j] = 0
+-      }
+-    } else if (levelIndex[j] < this.contourLevels[j].length - 1) {
+-      var a = this.contourLevels[j][levelIndex[j]]
+-      var b = this.contourLevels[j][levelIndex[j] + 1]
+-      if (Math.abs(a - pos[j]) > Math.abs(b - pos[j])) {
+-        levelIndex[j] += 1
+-      }
+-    }
+-  }
++  //Split center intervals
++  var leftPoints = centerIntervals
++  var rightPoints = centerIntervals.slice()
++  leftPoints.sort(compareBegin)
++  rightPoints.sort(compareEnd)
+ 
+-  result.index[0] = fx < 0.5 ? ix : (ix + 1)
+-  result.index[1] = fy < 0.5 ? iy : (iy + 1)
++  return new IntervalTreeNode(mid, 
++    createIntervalTree(leftIntervals),
++    createIntervalTree(rightIntervals),
++    leftPoints,
++    rightPoints)
++}
+ 
+-  result.uv[0] = x / shape[0]
+-  result.uv[1] = y / shape[1]
++//User friendly wrapper that makes it possible to support empty trees
++function IntervalTree(root) {
++  this.root = root
++}
+ 
+-  for (i = 0; i < 3; ++i) {
+-    result.dataCoordinate[i] = this._field[i].get(result.index[0], result.index[1])
+-  }
++var tproto = IntervalTree.prototype
+ 
+-  return result
++tproto.insert = function(interval) {
++  if(this.root) {
++    this.root.insert(interval)
++  } else {
++    this.root = new IntervalTreeNode(interval[0], null, null, [interval], [interval])
++  }
+ }
+ 
+-function padField (nfield, field) {
+-  var shape = field.shape.slice()
+-  var nshape = nfield.shape.slice()
+-
+-  // Center
+-  ops.assign(nfield.lo(1, 1).hi(shape[0], shape[1]), field)
++tproto.remove = function(interval) {
++  if(this.root) {
++    var r = this.root.remove(interval)
++    if(r === EMPTY) {
++      this.root = null
++    }
++    return r !== NOT_FOUND
++  }
++  return false
++}
+ 
+-  // Edges
+-  ops.assign(nfield.lo(1).hi(shape[0], 1),
+-    field.hi(shape[0], 1))
+-  ops.assign(nfield.lo(1, nshape[1] - 1).hi(shape[0], 1),
+-    field.lo(0, shape[1] - 1).hi(shape[0], 1))
+-  ops.assign(nfield.lo(0, 1).hi(1, shape[1]),
+-    field.hi(1))
+-  ops.assign(nfield.lo(nshape[0] - 1, 1).hi(1, shape[1]),
+-    field.lo(shape[0] - 1))
+-  // Corners
+-  nfield.set(0, 0, field.get(0, 0))
+-  nfield.set(0, nshape[1] - 1, field.get(0, shape[1] - 1))
+-  nfield.set(nshape[0] - 1, 0, field.get(shape[0] - 1, 0))
+-  nfield.set(nshape[0] - 1, nshape[1] - 1, field.get(shape[0] - 1, shape[1] - 1))
++tproto.queryPoint = function(p, cb) {
++  if(this.root) {
++    return this.root.queryPoint(p, cb)
++  }
+ }
+ 
+-function handleArray (param, ctor) {
+-  if (Array.isArray(param)) {
+-    return [ ctor(param[0]), ctor(param[1]), ctor(param[2]) ]
++tproto.queryInterval = function(lo, hi, cb) {
++  if(lo <= hi && this.root) {
++    return this.root.queryInterval(lo, hi, cb)
+   }
+-  return [ ctor(param), ctor(param), ctor(param) ]
+ }
+ 
+-function toColor (x) {
+-  if (Array.isArray(x)) {
+-    if (x.length === 3) {
+-      return [x[0], x[1], x[2], 1]
++Object.defineProperty(tproto, "count", {
++  get: function() {
++    if(this.root) {
++      return this.root.count
+     }
+-    return [x[0], x[1], x[2], x[3]]
++    return 0
+   }
+-  return [0, 0, 0, 1]
+-}
++})
+ 
+-function handleColor (param) {
+-  if (Array.isArray(param)) {
+-    if (Array.isArray(param)) {
+-      return [
+-        toColor(param[0]),
+-        toColor(param[1]),
+-        toColor(param[2]) ]
+-    } else {
+-      var c = toColor(param)
+-      return [
+-        c.slice(),
+-        c.slice(),
+-        c.slice() ]
++Object.defineProperty(tproto, "intervals", {
++  get: function() {
++    if(this.root) {
++      return this.root.intervals([])
+     }
++    return []
+   }
+-}
++})
+ 
+-proto.update = function (params) {
+-  params = params || {}
++function createWrapper(intervals) {
++  if(!intervals || intervals.length === 0) {
++    return new IntervalTree(null)
++  }
++  return new IntervalTree(createIntervalTree(intervals))
++}
+ 
+-  this.dirty = true
++},{"binary-search-bounds":34}],167:[function(require,module,exports){
++"use strict"
+ 
+-  if ('contourWidth' in params) {
+-    this.contourWidth = handleArray(params.contourWidth, Number)
+-  }
+-  if ('showContour' in params) {
+-    this.showContour = handleArray(params.showContour, Boolean)
+-  }
+-  if ('showSurface' in params) {
+-    this.showSurface = !!params.showSurface
+-  }
+-  if ('contourTint' in params) {
+-    this.contourTint = handleArray(params.contourTint, Boolean)
+-  }
+-  if ('contourColor' in params) {
+-    this.contourColor = handleColor(params.contourColor)
+-  }
+-  if ('contourProject' in params) {
+-    this.contourProject = handleArray(params.contourProject, function (x) {
+-      return handleArray(x, Boolean)
+-    })
+-  }
+-  if ('surfaceProject' in params) {
+-    this.surfaceProject = params.surfaceProject
+-  }
+-  if ('dynamicColor' in params) {
+-    this.dynamicColor = handleColor(params.dynamicColor)
+-  }
+-  if ('dynamicTint' in params) {
+-    this.dynamicTint = handleArray(params.dynamicTint, Number)
+-  }
+-  if ('dynamicWidth' in params) {
+-    this.dynamicWidth = handleArray(params.dynamicWidth, Number)
+-  }
+-  if ('opacity' in params) {
+-    this.opacity = params.opacity
+-  }
+-  if ('colorBounds' in params) {
+-    this.colorBounds = params.colorBounds
++function invertPermutation(pi, result) {
++  result = result || new Array(pi.length)
++  for(var i=0; i<pi.length; ++i) {
++    result[pi[i]] = i
+   }
++  return result
++}
+ 
+-  var field = params.field || (params.coords && params.coords[2]) || null
+-  var levelsChanged = false
++module.exports = invertPermutation
++},{}],168:[function(require,module,exports){
++"use strict"
+ 
+-  if (!field) {
+-    if (this._field[2].shape[0] || this._field[2].shape[2]) {
+-      field = this._field[2].lo(1, 1).hi(this._field[2].shape[0] - 2, this._field[2].shape[1] - 2)
+-    } else {
+-      field = this._field[2].hi(0, 0)
+-    }
++function iota(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = i
+   }
++  return result
++}
+ 
+-  // Update field
+-  if ('field' in params || 'coords' in params) {
+-    var fsize = (field.shape[0] + 2) * (field.shape[1] + 2)
+-
+-    // Resize if necessary
+-    if (fsize > this._field[2].data.length) {
+-      pool.freeFloat(this._field[2].data)
+-      this._field[2].data = pool.mallocFloat(bits.nextPow2(fsize))
+-    }
++module.exports = iota
++},{}],169:[function(require,module,exports){
++/*!
++ * Determine if an object is a Buffer
++ *
++ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
++ * @license  MIT
++ */
+ 
+-    // Pad field
+-    this._field[2] = ndarray(this._field[2].data, [field.shape[0] + 2, field.shape[1] + 2])
+-    padField(this._field[2], field)
++// The _isBuffer check is for Safari 5-7 support, because it's missing
++// Object.prototype.constructor. Remove this eventually
++module.exports = function (obj) {
++  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
++}
+ 
+-    // Save shape of field
+-    this.shape = field.shape.slice()
+-    var shape = this.shape
++function isBuffer (obj) {
++  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
++}
+ 
+-    // Resize coordinate fields if necessary
+-    for (var i = 0; i < 2; ++i) {
+-      if (this._field[2].size > this._field[i].data.length) {
+-        pool.freeFloat(this._field[i].data)
+-        this._field[i].data = pool.mallocFloat(this._field[2].size)
+-      }
+-      this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2])
+-    }
++// For Node v0.10 support. Remove this eventually.
++function isSlowBuffer (obj) {
++  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
++}
+ 
+-    // Generate x/y coordinates
+-    if (params.coords) {
+-      var coords = params.coords
+-      if (!Array.isArray(coords) || coords.length !== 3) {
+-        throw new Error('gl-surface: invalid coordinates for x/y')
+-      }
+-      for (i = 0; i < 2; ++i) {
+-        var coord = coords[i]
+-        for (j = 0; j < 2; ++j) {
+-          if (coord.shape[j] !== shape[j]) {
+-            throw new Error('gl-surface: coords have incorrect shape')
+-          }
+-        }
+-        padField(this._field[i], coord)
+-      }
+-    } else if (params.ticks) {
+-      var ticks = params.ticks
+-      if (!Array.isArray(ticks) || ticks.length !== 2) {
+-        throw new Error('gl-surface: invalid ticks')
+-      }
+-      for (i = 0; i < 2; ++i) {
+-        var tick = ticks[i]
+-        if (Array.isArray(tick) || tick.length) {
+-          tick = ndarray(tick)
+-        }
+-        if (tick.shape[0] !== shape[i]) {
+-          throw new Error('gl-surface: invalid tick length')
+-        }
+-        // Make a copy view of the tick array
+-        var tick2 = ndarray(tick.data, shape)
+-        tick2.stride[i] = tick.stride[0]
+-        tick2.stride[i ^ 1] = 0
++},{}],170:[function(require,module,exports){
++'use strict'
+ 
+-        // Fill in field array
+-        padField(this._field[i], tick2)
+-      }
+-    } else {
+-      for (i = 0; i < 2; ++i) {
+-        var offset = [0, 0]
+-        offset[i] = 1
+-        this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2], offset, 0)
+-      }
+-      this._field[0].set(0, 0, 0)
+-      for (var j = 0; j < shape[0]; ++j) {
+-        this._field[0].set(j + 1, 0, j)
+-      }
+-      this._field[0].set(shape[0] + 1, 0, shape[0] - 1)
+-      this._field[1].set(0, 0, 0)
+-      for (j = 0; j < shape[1]; ++j) {
+-        this._field[1].set(0, j + 1, j)
+-      }
+-      this._field[1].set(0, shape[1] + 1, shape[1] - 1)
+-    }
++module.exports = createTable
+ 
+-    // Save shape
+-    var fields = this._field
++var chull = require('convex-hull')
+ 
+-    // Compute surface normals
+-    var dfields = ndarray(pool.mallocFloat(fields[2].size * 3 * 2), [3, shape[0] + 2, shape[1] + 2, 2])
+-    for (i = 0; i < 3; ++i) {
+-      gradient(dfields.pick(i), fields[i], 'mirror')
++function constructVertex(d, a, b) {
++  var x = new Array(d)
++  for(var i=0; i<d; ++i) {
++    x[i] = 0.0
++    if(i === a) {
++      x[i] += 0.5
+     }
+-    var normals = ndarray(pool.mallocFloat(fields[2].size * 3), [shape[0] + 2, shape[1] + 2, 3])
+-    for (i = 0; i < shape[0] + 2; ++i) {
+-      for (j = 0; j < shape[1] + 2; ++j) {
+-        var dxdu = dfields.get(0, i, j, 0)
+-        var dxdv = dfields.get(0, i, j, 1)
+-        var dydu = dfields.get(1, i, j, 0)
+-        var dydv = dfields.get(1, i, j, 1)
+-        var dzdu = dfields.get(2, i, j, 0)
+-        var dzdv = dfields.get(2, i, j, 1)
+-
+-        var nx = dydu * dzdv - dydv * dzdu
+-        var ny = dzdu * dxdv - dzdv * dxdu
+-        var nz = dxdu * dydv - dxdv * dydu
++    if(i === b) {
++      x[i] += 0.5
++    }
++  }
++  return x
++}
+ 
+-        var nl = Math.sqrt(nx * nx + ny * ny + nz * nz)
+-        if (nl < 1e-8) {
+-          nl = Math.max(Math.abs(nx), Math.abs(ny), Math.abs(nz))
+-          if (nl < 1e-8) {
+-            nz = 1.0
+-            ny = nx = 0.0
+-            nl = 1.0
+-          } else {
+-            nl = 1.0 / nl
+-          }
+-        } else {
+-          nl = 1.0 / Math.sqrt(nl)
++function constructCell(dimension, mask) {
++  if(mask === 0 || mask === (1<<(dimension+1))-1) {
++    return []
++  }
++  var points = []
++  var index  = []
++  for(var i=0; i<=dimension; ++i) {
++    if(mask & (1<<i)) {
++      points.push(constructVertex(dimension, i-1, i-1))
++      index.push(null)
++      for(var j=0; j<=dimension; ++j) {
++        if(~mask & (1<<j)) {
++          points.push(constructVertex(dimension, i-1, j-1))
++          index.push([i,j])
+         }
+-
+-        normals.set(i, j, 0, nx * nl)
+-        normals.set(i, j, 1, ny * nl)
+-        normals.set(i, j, 2, nz * nl)
+       }
+     }
+-    pool.free(dfields.data)
++  }
++  
++  //Preprocess points so first d+1 points are linearly independent
++  var hull = chull(points)
++  var faces = []
++i_loop:
++  for(var i=0; i<hull.length; ++i) {
++    var face = hull[i]
++    var nface = []
++    for(var j=0; j<face.length; ++j) {
++      if(!index[face[j]]) {
++        continue i_loop
++      }
++      nface.push(index[face[j]].slice())
++    }
++    faces.push(nface)
++  }
++  return faces
++}
+ 
+-    // Initialize surface
+-    var lo = [ Infinity, Infinity, Infinity ]
+-    var hi = [ -Infinity, -Infinity, -Infinity ]
+-    var lo_intensity = Infinity
+-    var hi_intensity = -Infinity
+-    var count = (shape[0] - 1) * (shape[1] - 1) * 6
+-    var tverts = pool.mallocFloat(bits.nextPow2(10 * count))
+-    var tptr = 0
+-    var vertexCount = 0
+-    for (i = 0; i < shape[0] - 1; ++i) {
+-      j_loop:
+-      for (j = 0; j < shape[1] - 1; ++j) {
+-        // Test for NaNs
+-        for (var dx = 0; dx < 2; ++dx) {
+-          for (var dy = 0; dy < 2; ++dy) {
+-            for (var k = 0; k < 3; ++k) {
+-              var f = this._field[k].get(1 + i + dx, 1 + j + dy)
+-              if (isNaN(f) || !isFinite(f)) {
+-                continue j_loop
+-              }
+-            }
+-          }
+-        }
+-        for (k = 0; k < 6; ++k) {
+-          var r = i + QUAD[k][0]
+-          var c = j + QUAD[k][1]
++function createTable(dimension) {
++  var numCells = 1<<(dimension+1)
++  var result = new Array(numCells)
++  for(var i=0; i<numCells; ++i) {
++    result[i] = constructCell(dimension, i)
++  }
++  return result
++}
++},{"convex-hull":65}],171:[function(require,module,exports){
++/*jshint unused:true*/
++/*
++Input:  matrix      ; a 4x4 matrix
++Output: translation ; a 3 component vector
++        scale       ; a 3 component vector
++        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
++        perspective ; a 4 component vector
++        quaternion  ; a 4 component vector
++Returns false if the matrix cannot be decomposed, true if it can
+ 
+-          var tx = this._field[0].get(r + 1, c + 1)
+-          var ty = this._field[1].get(r + 1, c + 1)
+-          f = this._field[2].get(r + 1, c + 1)
+-          var vf = f
+-          nx = normals.get(r + 1, c + 1, 0)
+-          ny = normals.get(r + 1, c + 1, 1)
+-          nz = normals.get(r + 1, c + 1, 2)
+ 
+-          if (params.intensity) {
+-            vf = params.intensity.get(r, c)
+-          }
++References:
++https://github.com/kamicane/matrix3d/blob/master/lib/Matrix3d.js
++https://github.com/ChromiumWebApps/chromium/blob/master/ui/gfx/transform_util.cc
++http://www.w3.org/TR/css3-transforms/#decomposing-a-3d-matrix
++*/
+ 
+-          tverts[tptr++] = r
+-          tverts[tptr++] = c
+-          tverts[tptr++] = tx
+-          tverts[tptr++] = ty
+-          tverts[tptr++] = f
+-          tverts[tptr++] = 0
+-          tverts[tptr++] = vf
+-          tverts[tptr++] = nx
+-          tverts[tptr++] = ny
+-          tverts[tptr++] = nz
++var normalize = require('./normalize')
+ 
+-          lo[0] = Math.min(lo[0], tx)
+-          lo[1] = Math.min(lo[1], ty)
+-          lo[2] = Math.min(lo[2], f)
+-          lo_intensity = Math.min(lo_intensity, vf)
++var create = require('gl-mat4/create')
++var clone = require('gl-mat4/clone')
++var determinant = require('gl-mat4/determinant')
++var invert = require('gl-mat4/invert')
++var transpose = require('gl-mat4/transpose')
++var vec3 = {
++    length: require('gl-vec3/length'),
++    normalize: require('gl-vec3/normalize'),
++    dot: require('gl-vec3/dot'),
++    cross: require('gl-vec3/cross')
++}
+ 
+-          hi[0] = Math.max(hi[0], tx)
+-          hi[1] = Math.max(hi[1], ty)
+-          hi[2] = Math.max(hi[2], f)
+-          hi_intensity = Math.max(hi_intensity, vf)
++var tmp = create()
++var perspectiveMatrix = create()
++var tmpVec4 = [0, 0, 0, 0]
++var row = [ [0,0,0], [0,0,0], [0,0,0] ]
++var pdum3 = [0,0,0]
+ 
+-          vertexCount += 1
+-        }
+-      }
+-    }
++module.exports = function decomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
++    if (!translation) translation = [0,0,0]
++    if (!scale) scale = [0,0,0]
++    if (!skew) skew = [0,0,0]
++    if (!perspective) perspective = [0,0,0,1]
++    if (!quaternion) quaternion = [0,0,0,1]
+ 
+-    if (params.intensityBounds) {
+-      lo_intensity = +params.intensityBounds[0]
+-      hi_intensity = +params.intensityBounds[1]
+-    }
++    //normalize, if not possible then bail out early
++    if (!normalize(tmp, matrix))
++        return false
+ 
+-    // Scale all vertex intensities
+-    for (i = 6; i < tptr; i += 10) {
+-      tverts[i] = (tverts[i] - lo_intensity) / (hi_intensity - lo_intensity)
+-    }
++    // perspectiveMatrix is used to solve for perspective, but it also provides
++    // an easy way to test for singularity of the upper 3x3 component.
++    clone(perspectiveMatrix, tmp)
+ 
+-    this._vertexCount = vertexCount
+-    this._coordinateBuffer.update(tverts.subarray(0, tptr))
+-    pool.freeFloat(tverts)
+-    pool.free(normals.data)
++    perspectiveMatrix[3] = 0
++    perspectiveMatrix[7] = 0
++    perspectiveMatrix[11] = 0
++    perspectiveMatrix[15] = 1
+ 
+-    // Update bounds
+-    this.bounds = [lo, hi]
++    // If the perspectiveMatrix is not invertible, we are also unable to
++    // decompose, so we'll bail early. Constant taken from SkMatrix44::invert.
++    if (Math.abs(determinant(perspectiveMatrix) < 1e-8))
++        return false
+ 
+-    // Save intensity
+-    this.intensity = params.intensity || this._field[2]
++    var a03 = tmp[3], a13 = tmp[7], a23 = tmp[11],
++            a30 = tmp[12], a31 = tmp[13], a32 = tmp[14], a33 = tmp[15]
+ 
+-    if(this.intensityBounds[0] !== lo_intensity || this.intensityBounds[1] !== hi_intensity) {
+-        levelsChanged = true
+-    }
++    // First, isolate perspective.
++    if (a03 !== 0 || a13 !== 0 || a23 !== 0) {
++        tmpVec4[0] = a03
++        tmpVec4[1] = a13
++        tmpVec4[2] = a23
++        tmpVec4[3] = a33
+ 
+-    // Save intensity bound
+-    this.intensityBounds = [lo_intensity, hi_intensity]
+-  }
++        // Solve the equation by inverting perspectiveMatrix and multiplying
++        // rightHandSide by the inverse.
++        // resuing the perspectiveMatrix here since it's no longer needed
++        var ret = invert(perspectiveMatrix, perspectiveMatrix)
++        if (!ret) return false
++        transpose(perspectiveMatrix, perspectiveMatrix)
+ 
+-  // Update level crossings
+-  if ('levels' in params) {
+-    var levels = params.levels
+-    if (!Array.isArray(levels[0])) {
+-      levels = [ [], [], levels ]
+-    } else {
+-      levels = levels.slice()
+-    }
+-    for (i = 0; i < 3; ++i) {
+-      levels[i] = levels[i].slice()
+-      levels.sort(function (a, b) {
+-        return a - b
+-      })
+-    }
+-    change_test:
+-    for (i = 0; i < 3; ++i) {
+-      if (levels[i].length !== this.contourLevels[i].length) {
+-        levelsChanged = true
+-        break
+-      }
+-      for (j = 0; j < levels[i].length; ++j) {
+-        if (levels[i][j] !== this.contourLevels[i][j]) {
+-          levelsChanged = true
+-          break change_test
+-        }
+-      }
++        //multiply by transposed inverse perspective matrix, into perspective vec4
++        vec4multMat4(perspective, tmpVec4, perspectiveMatrix)
++    } else { 
++        //no perspective
++        perspective[0] = perspective[1] = perspective[2] = 0
++        perspective[3] = 1
+     }
+-    this.contourLevels = levels
+-  }
+-
+-  if (levelsChanged) {
+-    fields = this._field
+-    shape = this.shape
+ 
+-    // Update contour lines
+-    var contourVerts = []
++    // Next take care of translation
++    translation[0] = a30
++    translation[1] = a31
++    translation[2] = a32
+ 
+-    for (var dim = 0; dim < 3; ++dim) {
+-      levels = this.contourLevels[dim]
+-      var levelOffsets = []
+-      var levelCounts = []
++    // Now get scale and shear. 'row' is a 3 element array of 3 component vectors
++    mat3from4(row, tmp)
+ 
+-      var parts = [0, 0, 0]
++    // Compute X scale factor and normalize first row.
++    scale[0] = vec3.length(row[0])
++    vec3.normalize(row[0], row[0])
+ 
+-      for (i = 0; i < levels.length; ++i) {
+-        var graph = surfaceNets(this._field[dim], levels[i])
+-        levelOffsets.push((contourVerts.length / 5) | 0)
+-        vertexCount = 0
++    // Compute XY shear factor and make 2nd row orthogonal to 1st.
++    skew[0] = vec3.dot(row[0], row[1])
++    combine(row[1], row[1], row[0], 1.0, -skew[0])
+ 
+-        edge_loop:
+-        for (j = 0; j < graph.cells.length; ++j) {
+-          var e = graph.cells[j]
+-          for (k = 0; k < 2; ++k) {
+-            var p = graph.positions[e[k]]
++    // Now, compute Y scale and normalize 2nd row.
++    scale[1] = vec3.length(row[1])
++    vec3.normalize(row[1], row[1])
++    skew[0] /= scale[1]
+ 
+-            var x = p[0]
+-            var ix = Math.floor(x) | 0
+-            var fx = x - ix
++    // Compute XZ and YZ shears, orthogonalize 3rd row
++    skew[1] = vec3.dot(row[0], row[2])
++    combine(row[2], row[2], row[0], 1.0, -skew[1])
++    skew[2] = vec3.dot(row[1], row[2])
++    combine(row[2], row[2], row[1], 1.0, -skew[2])
+ 
+-            var y = p[1]
+-            var iy = Math.floor(y) | 0
+-            var fy = y - iy
++    // Next, get Z scale and normalize 3rd row.
++    scale[2] = vec3.length(row[2])
++    vec3.normalize(row[2], row[2])
++    skew[1] /= scale[2]
++    skew[2] /= scale[2]
+ 
+-            var hole = false
+-            dd_loop:
+-            for (var dd = 0; dd < 3; ++dd) {
+-              parts[dd] = 0.0
+-              var iu = (dim + dd + 1) % 3
+-              for (dx = 0; dx < 2; ++dx) {
+-                var s = dx ? fx : 1.0 - fx
+-                r = Math.min(Math.max(ix + dx, 0), shape[0]) | 0
+-                for (dy = 0; dy < 2; ++dy) {
+-                  var t = dy ? fy : 1.0 - fy
+-                  c = Math.min(Math.max(iy + dy, 0), shape[1]) | 0
+ 
+-                  if (dd < 2) {
+-                    f = this._field[iu].get(r, c)
+-                  } else {
+-                    f = (this.intensity.get(r, c) - this.intensityBounds[0]) / (this.intensityBounds[1] - this.intensityBounds[0])
+-                  }
+-                  if (!isFinite(f) || isNaN(f)) {
+-                    hole = true
+-                    break dd_loop
+-                  }
++    // At this point, the matrix (in rows) is orthonormal.
++    // Check for a coordinate system flip.  If the determinant
++    // is -1, then negate the matrix and the scaling factors.
++    vec3.cross(pdum3, row[1], row[2])
++    if (vec3.dot(row[0], pdum3) < 0) {
++        for (var i = 0; i < 3; i++) {
++            scale[i] *= -1;
++            row[i][0] *= -1
++            row[i][1] *= -1
++            row[i][2] *= -1
++        }
++    }
+ 
+-                  var w = s * t
+-                  parts[dd] += w * f
+-                }
+-              }
+-            }
++    // Now, get the rotations out
++    quaternion[0] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] - row[1][1] - row[2][2], 0))
++    quaternion[1] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] + row[1][1] - row[2][2], 0))
++    quaternion[2] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] - row[1][1] + row[2][2], 0))
++    quaternion[3] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] + row[1][1] + row[2][2], 0))
+ 
+-            if (!hole) {
+-              contourVerts.push(parts[0], parts[1], p[0], p[1], parts[2])
+-              vertexCount += 1
+-            } else {
+-              if (k > 0) {
+-                // If we already added first edge, pop off verts
+-                for (var l = 0; l < 5; ++l) {
+-                  contourVerts.pop()
+-                }
+-                vertexCount -= 1
+-              }
+-              continue edge_loop
+-            }
+-          }
+-        }
+-        levelCounts.push(vertexCount)
+-      }
++    if (row[2][1] > row[1][2])
++        quaternion[0] = -quaternion[0]
++    if (row[0][2] > row[2][0])
++        quaternion[1] = -quaternion[1]
++    if (row[1][0] > row[0][1])
++        quaternion[2] = -quaternion[2]
++    return true
++}
+ 
+-      // Store results
+-      this._contourOffsets[dim] = levelOffsets
+-      this._contourCounts[dim] = levelCounts
+-    }
++//will be replaced by gl-vec4 eventually
++function vec4multMat4(out, a, m) {
++    var x = a[0], y = a[1], z = a[2], w = a[3];
++    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
++    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
++    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
++    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
++    return out;
++}
+ 
+-    var floatBuffer = pool.mallocFloat(contourVerts.length)
+-    for (i = 0; i < contourVerts.length; ++i) {
+-      floatBuffer[i] = contourVerts[i]
+-    }
+-    this._contourBuffer.update(floatBuffer)
+-    pool.freeFloat(floatBuffer)
+-  }
++//gets upper-left of a 4x4 matrix into a 3x3 of vectors
++function mat3from4(out, mat4x4) {
++    out[0][0] = mat4x4[0]
++    out[0][1] = mat4x4[1]
++    out[0][2] = mat4x4[2]
++    
++    out[1][0] = mat4x4[4]
++    out[1][1] = mat4x4[5]
++    out[1][2] = mat4x4[6]
+ 
+-  if (params.colormap) {
+-    this._colorMap.setPixels(genColormap(params.colormap))
+-  }
++    out[2][0] = mat4x4[8]
++    out[2][1] = mat4x4[9]
++    out[2][2] = mat4x4[10]
+ }
+ 
+-proto.dispose = function () {
+-  this._shader.dispose()
+-  this._vao.dispose()
+-  this._coordinateBuffer.dispose()
+-  this._colorMap.dispose()
+-  this._contourBuffer.dispose()
+-  this._contourVAO.dispose()
+-  this._contourShader.dispose()
+-  this._contourPickShader.dispose()
+-  this._dynamicBuffer.dispose()
+-  this._dynamicVAO.dispose()
+-  for (var i = 0; i < 3; ++i) {
+-    pool.freeFloat(this._field[i].data)
+-  }
++function combine(out, a, b, scale1, scale2) {
++    out[0] = a[0] * scale1 + b[0] * scale2
++    out[1] = a[1] * scale1 + b[1] * scale2
++    out[2] = a[2] * scale1 + b[2] * scale2
+ }
++},{"./normalize":172,"gl-mat4/clone":105,"gl-mat4/create":106,"gl-mat4/determinant":107,"gl-mat4/invert":111,"gl-mat4/transpose":121,"gl-vec3/cross":149,"gl-vec3/dot":150,"gl-vec3/length":151,"gl-vec3/normalize":153}],172:[function(require,module,exports){
++module.exports = function normalize(out, mat) {
++    var m44 = mat[15]
++    // Cannot normalize.
++    if (m44 === 0) 
++        return false
++    var scale = 1 / m44
++    for (var i=0; i<16; i++)
++        out[i] = mat[i] * scale
++    return true
++}
++},{}],173:[function(require,module,exports){
++var lerp = require('gl-vec3/lerp')
+ 
+-proto.highlight = function (selection) {
+-  if (!selection) {
+-    this._dynamicCounts = [0, 0, 0]
+-    this.dyanamicLevel = [NaN, NaN, NaN]
+-    this.highlightLevel = [-1, -1, -1]
+-    return
+-  }
++var recompose = require('mat4-recompose')
++var decompose = require('mat4-decompose')
++var determinant = require('gl-mat4/determinant')
++var slerp = require('quat-slerp')
+ 
+-  for (var i = 0; i < 3; ++i) {
+-    if (this.enableHighlight[i]) {
+-      this.highlightLevel[i] = selection.level[i]
+-    } else {
+-      this.highlightLevel[i] = -1
+-    }
+-  }
++var state0 = state()
++var state1 = state()
++var tmp = state()
+ 
+-  var levels
+-  if (this.snapToData) {
+-    levels = selection.dataCoordinate
+-  } else {
+-    levels = selection.position
+-  }
+-  if ((!this.enableDynamic[0] || levels[0] === this.dynamicLevel[0]) &&
+-    (!this.enableDynamic[1] || levels[1] === this.dynamicLevel[1]) &&
+-    (!this.enableDynamic[2] || levels[2] === this.dynamicLevel[2])) {
+-    return
+-  }
++module.exports = interpolate
++function interpolate(out, start, end, alpha) {
++    if (determinant(start) === 0 || determinant(end) === 0)
++        return false
+ 
+-  var vertexCount = 0
+-  var shape = this.shape
+-  var scratchBuffer = pool.mallocFloat(12 * shape[0] * shape[1])
++    //decompose the start and end matrices into individual components
++    var r0 = decompose(start, state0.translate, state0.scale, state0.skew, state0.perspective, state0.quaternion)
++    var r1 = decompose(end, state1.translate, state1.scale, state1.skew, state1.perspective, state1.quaternion)
++    if (!r0 || !r1)
++        return false    
+ 
+-  for (var d = 0; d < 3; ++d) {
+-    if (!this.enableDynamic[d]) {
+-      this.dynamicLevel[d] = NaN
+-      this._dynamicCounts[d] = 0
+-      continue
++
++    //now lerp/slerp the start and end components into a temporary     lerp(tmptranslate, state0.translate, state1.translate, alpha)
++    lerp(tmp.translate, state0.translate, state1.translate, alpha)
++    lerp(tmp.skew, state0.skew, state1.skew, alpha)
++    lerp(tmp.scale, state0.scale, state1.scale, alpha)
++    lerp(tmp.perspective, state0.perspective, state1.perspective, alpha)
++    slerp(tmp.quaternion, state0.quaternion, state1.quaternion, alpha)
++
++    //and recompose into our 'out' matrix
++    recompose(out, tmp.translate, tmp.scale, tmp.skew, tmp.perspective, tmp.quaternion)
++    return true
++}
++
++function state() {
++    return {
++        translate: vec3(),
++        scale: vec3(1),
++        skew: vec3(),
++        perspective: vec4(),
++        quaternion: vec4()
+     }
++}
+ 
+-    this.dynamicLevel[d] = levels[d]
++function vec3(n) {
++    return [n||0,n||0,n||0]
++}
+ 
+-    var u = (d + 1) % 3
+-    var v = (d + 2) % 3
++function vec4() {
++    return [0,0,0,1]
++}
++},{"gl-mat4/determinant":107,"gl-vec3/lerp":152,"mat4-decompose":171,"mat4-recompose":174,"quat-slerp":206}],174:[function(require,module,exports){
++/*
++Input:  translation ; a 3 component vector
++        scale       ; a 3 component vector
++        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
++        perspective ; a 4 component vector
++        quaternion  ; a 4 component vector
++Output: matrix      ; a 4x4 matrix
+ 
+-    var f = this._field[d]
+-    var g = this._field[u]
+-    var h = this._field[v]
+-    var intensity = this.intensity
++From: http://www.w3.org/TR/css3-transforms/#recomposing-to-a-3d-matrix
++*/
+ 
+-    var graph = surfaceNets(f, levels[d])
+-    var edges = graph.cells
+-    var positions = graph.positions
++var mat4 = {
++    identity: require('gl-mat4/identity'),
++    translate: require('gl-mat4/translate'),
++    multiply: require('gl-mat4/multiply'),
++    create: require('gl-mat4/create'),
++    scale: require('gl-mat4/scale'),
++    fromRotationTranslation: require('gl-mat4/fromRotationTranslation')
++}
+ 
+-    this._dynamicOffsets[d] = vertexCount
++var rotationMatrix = mat4.create()
++var temp = mat4.create()
+ 
+-    for (i = 0; i < edges.length; ++i) {
+-      var e = edges[i]
+-      for (var j = 0; j < 2; ++j) {
+-        var p = positions[e[j]]
++module.exports = function recomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
++    mat4.identity(matrix)
+ 
+-        var x = +p[0]
+-        var ix = x | 0
+-        var jx = Math.min(ix + 1, shape[0]) | 0
+-        var fx = x - ix
+-        var hx = 1.0 - fx
++    //apply translation & rotation
++    mat4.fromRotationTranslation(matrix, quaternion, translation)
+ 
+-        var y = +p[1]
+-        var iy = y | 0
+-        var jy = Math.min(iy + 1, shape[1]) | 0
+-        var fy = y - iy
+-        var hy = 1.0 - fy
++    //apply perspective
++    matrix[3] = perspective[0]
++    matrix[7] = perspective[1]
++    matrix[11] = perspective[2]
++    matrix[15] = perspective[3]
++        
++    // apply skew
++    // temp is a identity 4x4 matrix initially
++    mat4.identity(temp)
+ 
+-        var w00 = hx * hy
+-        var w01 = hx * fy
+-        var w10 = fx * hy
+-        var w11 = fx * fy
++    if (skew[2] !== 0) {
++        temp[9] = skew[2]
++        mat4.multiply(matrix, matrix, temp)
++    }
+ 
+-        var cu = w00 * g.get(ix, iy) +
+-          w01 * g.get(ix, jy) +
+-          w10 * g.get(jx, iy) +
+-          w11 * g.get(jx, jy)
++    if (skew[1] !== 0) {
++        temp[9] = 0
++        temp[8] = skew[1]
++        mat4.multiply(matrix, matrix, temp)
++    }
+ 
+-        var cv = w00 * h.get(ix, iy) +
+-          w01 * h.get(ix, jy) +
+-          w10 * h.get(jx, iy) +
+-          w11 * h.get(jx, jy)
++    if (skew[0] !== 0) {
++        temp[8] = 0
++        temp[4] = skew[0]
++        mat4.multiply(matrix, matrix, temp)
++    }
+ 
+-        if (isNaN(cu) || isNaN(cv)) {
+-          if (j) {
+-            vertexCount -= 1
+-          }
+-          break
+-        }
++    //apply scale
++    mat4.scale(matrix, matrix, scale)
++    return matrix
++}
++},{"gl-mat4/create":106,"gl-mat4/fromRotationTranslation":109,"gl-mat4/identity":110,"gl-mat4/multiply":113,"gl-mat4/scale":119,"gl-mat4/translate":120}],175:[function(require,module,exports){
++'use strict'
+ 
+-        scratchBuffer[2 * vertexCount + 0] = cu
+-        scratchBuffer[2 * vertexCount + 1] = cv
++var bsearch   = require('binary-search-bounds')
++var m4interp  = require('mat4-interpolate')
++var invert44  = require('gl-mat4/invert')
++var rotateX   = require('gl-mat4/rotateX')
++var rotateY   = require('gl-mat4/rotateY')
++var rotateZ   = require('gl-mat4/rotateZ')
++var lookAt    = require('gl-mat4/lookAt')
++var translate = require('gl-mat4/translate')
++var scale     = require('gl-mat4/scale')
++var normalize = require('gl-vec3/normalize')
+ 
+-        vertexCount += 1
+-      }
+-    }
++var DEFAULT_CENTER = [0,0,0]
+ 
+-    this._dynamicCounts[d] = vertexCount - this._dynamicOffsets[d]
+-  }
++module.exports = createMatrixCameraController
+ 
+-  this._dynamicBuffer.update(scratchBuffer.subarray(0, 2 * vertexCount))
+-  pool.freeFloat(scratchBuffer)
++function MatrixCameraController(initialMatrix) {
++  this._components    = initialMatrix.slice()
++  this._time          = [0]
++  this.prevMatrix     = initialMatrix.slice()
++  this.nextMatrix     = initialMatrix.slice()
++  this.computedMatrix = initialMatrix.slice()
++  this.computedInverse = initialMatrix.slice()
++  this.computedEye    = [0,0,0]
++  this.computedUp     = [0,0,0]
++  this.computedCenter = [0,0,0]
++  this.computedRadius = [0]
++  this._limits        = [-Infinity, Infinity]
+ }
+ 
+-function createSurfacePlot (params) {
+-  var gl = params.gl
+-  var shader = createShader(gl)
+-  var pickShader = createPickShader(gl)
+-  var contourShader = createContourShader(gl)
+-  var contourPickShader = createPickContourShader(gl)
++var proto = MatrixCameraController.prototype
+ 
+-  var coordinateBuffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    { buffer: coordinateBuffer,
+-      size: 4,
+-      stride: SURFACE_VERTEX_SIZE,
+-      offset: 0
+-    },
+-    { buffer: coordinateBuffer,
+-      size: 3,
+-      stride: SURFACE_VERTEX_SIZE,
+-      offset: 16
+-    },
+-    {
+-      buffer: coordinateBuffer,
+-      size: 3,
+-      stride: SURFACE_VERTEX_SIZE,
+-      offset: 28
++proto.recalcMatrix = function(t) {
++  var time = this._time
++  var tidx = bsearch.le(time, t)
++  var mat = this.computedMatrix
++  if(tidx < 0) {
++    return
++  }
++  var comps = this._components
++  if(tidx === time.length-1) {
++    var ptr = 16*tidx
++    for(var i=0; i<16; ++i) {
++      mat[i] = comps[ptr++]
+     }
+-  ])
+-
+-  var contourBuffer = createBuffer(gl)
+-  var contourVAO = createVAO(gl, [
+-    {
+-      buffer: contourBuffer,
+-      size: 4,
+-      stride: 20,
+-      offset: 0
+-    },
+-    {
+-      buffer: contourBuffer,
+-      size: 1,
+-      stride: 20,
+-      offset: 16
++  } else {
++    var dt = (time[tidx+1] - time[tidx])
++    var ptr = 16*tidx
++    var prev = this.prevMatrix
++    var allEqual = true
++    for(var i=0; i<16; ++i) {
++      prev[i] = comps[ptr++]
+     }
+-  ])
++    var next = this.nextMatrix
++    for(var i=0; i<16; ++i) {
++      next[i] = comps[ptr++]
++      allEqual = allEqual && (prev[i] === next[i])
++    }
++    if(dt < 1e-6 || allEqual) {
++      for(var i=0; i<16; ++i) {
++        mat[i] = prev[i]
++      }
++    } else {
++      m4interp(mat, prev, next, (t - time[tidx])/dt)
++    }
++  }
+ 
+-  var dynamicBuffer = createBuffer(gl)
+-  var dynamicVAO = createVAO(gl, [
+-    {
+-      buffer: dynamicBuffer,
+-      size: 2,
+-      type: gl.FLOAT
+-    }])
++  var up = this.computedUp
++  up[0] = mat[1]
++  up[1] = mat[5]
++  up[2] = mat[6]
++  normalize(up, up)
+ 
+-  var cmap = createTexture(gl, 1, N_COLORS, gl.RGBA, gl.UNSIGNED_BYTE)
+-  cmap.minFilter = gl.LINEAR
+-  cmap.magFilter = gl.LINEAR
++  var imat = this.computedInverse
++  invert44(imat, mat)
++  var eye = this.computedEye
++  var w = imat[15]
++  eye[0] = imat[12]/w
++  eye[1] = imat[13]/w
++  eye[2] = imat[14]/w
+ 
+-  var surface = new SurfacePlot(
+-    gl,
+-    [0, 0],
+-    [[0, 0, 0], [0, 0, 0]],
+-    shader,
+-    pickShader,
+-    coordinateBuffer,
+-    vao,
+-    cmap,
+-    contourShader,
+-    contourPickShader,
+-    contourBuffer,
+-    contourVAO,
+-    dynamicBuffer,
+-    dynamicVAO)
++  var center = this.computedCenter
++  var radius = Math.exp(this.computedRadius[0])
++  for(var i=0; i<3; ++i) {
++    center[i] = eye[i] - mat[2+4*i] * radius
++  }
++}
+ 
+-  var nparams = {
+-    levels: [[], [], []]
++proto.idle = function(t) {
++  if(t < this.lastT()) {
++    return
+   }
+-  for (var id in params) {
+-    nparams[id] = params[id]
++  var mc = this._components
++  var ptr = mc.length-16
++  for(var i=0; i<16; ++i) {
++    mc.push(mc[ptr++])
+   }
+-  nparams.colormap = nparams.colormap || 'jet'
+-
+-  surface.update(nparams)
++  this._time.push(t)
++}
+ 
+-  return surface
++proto.flush = function(t) {
++  var idx = bsearch.gt(this._time, t) - 2
++  if(idx < 0) {
++    return
++  }
++  this._time.slice(0, idx)
++  this._components.slice(0, 16*idx)
+ }
+ 
+-},{"./lib/shaders":182,"binary-search-bounds":183,"bit-twiddle":38,"colormap":88,"gl-buffer":105,"gl-mat4/invert":120,"gl-mat4/multiply":122,"gl-texture2d":188,"gl-vao":192,"ndarray":219,"ndarray-gradient":184,"ndarray-ops":218,"ndarray-pack":185,"surface-nets":238,"typedarray-pool":242}],188:[function(require,module,exports){
+-'use strict'
++proto.lastT = function() {
++  return this._time[this._time.length-1]
++}
+ 
+-var ndarray = require('ndarray')
+-var ops     = require('ndarray-ops')
+-var pool    = require('typedarray-pool')
++proto.lookAt = function(t, eye, center, up) {
++  this.recalcMatrix(t)
++  eye    = eye || this.computedEye
++  center = center || DEFAULT_CENTER
++  up     = up || this.computedUp
++  this.setMatrix(t, lookAt(this.computedMatrix, eye, center, up))
++  var d2 = 0.0
++  for(var i=0; i<3; ++i) {
++    d2 += Math.pow(center[i] - eye[i], 2)
++  }
++  d2 = Math.log(Math.sqrt(d2))
++  this.computedRadius[0] = d2
++}
+ 
+-module.exports = createTexture2D
++proto.rotate = function(t, yaw, pitch, roll) {
++  this.recalcMatrix(t)
++  var mat = this.computedInverse
++  if(yaw)   rotateY(mat, mat, yaw)
++  if(pitch) rotateX(mat, mat, pitch)
++  if(roll)  rotateZ(mat, mat, roll)
++  this.setMatrix(t, invert44(this.computedMatrix, mat))
++}
+ 
+-var linearTypes = null
+-var filterTypes = null
+-var wrapTypes   = null
++var tvec = [0,0,0]
+ 
+-function lazyInitLinearTypes(gl) {
+-  linearTypes = [
+-    gl.LINEAR,
+-    gl.NEAREST_MIPMAP_LINEAR,
+-    gl.LINEAR_MIPMAP_NEAREST,
+-    gl.LINEAR_MIPMAP_NEAREST
+-  ]
+-  filterTypes = [
+-    gl.NEAREST,
+-    gl.LINEAR,
+-    gl.NEAREST_MIPMAP_NEAREST,
+-    gl.NEAREST_MIPMAP_LINEAR,
+-    gl.LINEAR_MIPMAP_NEAREST,
+-    gl.LINEAR_MIPMAP_LINEAR
+-  ]
+-  wrapTypes = [
+-    gl.REPEAT,
+-    gl.CLAMP_TO_EDGE,
+-    gl.MIRRORED_REPEAT
+-  ]
++proto.pan = function(t, dx, dy, dz) {
++  tvec[0] = -(dx || 0.0)
++  tvec[1] = -(dy || 0.0)
++  tvec[2] = -(dz || 0.0)
++  this.recalcMatrix(t)
++  var mat = this.computedInverse
++  translate(mat, mat, tvec)
++  this.setMatrix(t, invert44(mat, mat))
+ }
+ 
+-var convertFloatToUint8 = function(out, inp) {
+-  ops.muls(out, inp, 255.0)
++proto.translate = function(t, dx, dy, dz) {
++  tvec[0] = dx || 0.0
++  tvec[1] = dy || 0.0
++  tvec[2] = dz || 0.0
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
++  translate(mat, mat, tvec)
++  this.setMatrix(t, mat)
+ }
+ 
+-function reshapeTexture(tex, w, h) {
+-  var gl = tex.gl
+-  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(w < 0 || w > maxSize || h < 0 || h > maxSize) {
+-    throw new Error('gl-texture2d: Invalid texture size')
++proto.setMatrix = function(t, mat) {
++  if(t < this.lastT()) {
++    return
++  }
++  this._time.push(t)
++  for(var i=0; i<16; ++i) {
++    this._components.push(mat[i])
+   }
+-  tex._shape = [w, h]
+-  tex.bind()
+-  gl.texImage2D(gl.TEXTURE_2D, 0, tex.format, w, h, 0, tex.format, tex.type, null)
+-  tex._mipLevels = [0]
+-  return tex
+ }
+ 
+-function Texture2D(gl, handle, width, height, format, type) {
+-  this.gl = gl
+-  this.handle = handle
+-  this.format = format
+-  this.type = type
+-  this._shape = [width, height]
+-  this._mipLevels = [0]
+-  this._magFilter = gl.NEAREST
+-  this._minFilter = gl.NEAREST
+-  this._wrapS = gl.CLAMP_TO_EDGE
+-  this._wrapT = gl.CLAMP_TO_EDGE
+-  this._anisoSamples = 1
++proto.setDistance = function(t, d) {
++  this.computedRadius[0] = d
++}
+ 
+-  var parent = this
+-  var wrapVector = [this._wrapS, this._wrapT]
+-  Object.defineProperties(wrapVector, [
+-    {
+-      get: function() {
+-        return parent._wrapS
+-      },
+-      set: function(v) {
+-        return parent.wrapS = v
+-      }
+-    },
+-    {
+-      get: function() {
+-        return parent._wrapT
+-      },
+-      set: function(v) {
+-        return parent.wrapT = v
+-      }
+-    }
+-  ])
+-  this._wrapVector = wrapVector
++proto.setDistanceLimits = function(a,b) {
++  var lim = this._limits
++  lim[0] = a
++  lim[1] = b
++}
+ 
+-  var shapeVector = [this._shape[0], this._shape[1]]
+-  Object.defineProperties(shapeVector, [
+-    {
+-      get: function() {
+-        return parent._shape[0]
+-      },
+-      set: function(v) {
+-        return parent.width = v
+-      }
+-    },
+-    {
+-      get: function() {
+-        return parent._shape[1]
+-      },
+-      set: function(v) {
+-        return parent.height = v
+-      }
+-    }
+-  ])
+-  this._shapeVector = shapeVector
++proto.getDistanceLimits = function(out) {
++  var lim = this._limits
++  if(out) {
++    out[0] = lim[0]
++    out[1] = lim[1]
++    return out
++  }
++  return lim
+ }
+ 
+-var proto = Texture2D.prototype
++function createMatrixCameraController(options) {
++  options = options || {}
++  var matrix = options.matrix || 
++              [1,0,0,0,
++               0,1,0,0,
++               0,0,1,0,
++               0,0,0,1]
++  return new MatrixCameraController(matrix)
++}
++},{"binary-search-bounds":34,"gl-mat4/invert":111,"gl-mat4/lookAt":112,"gl-mat4/rotateX":116,"gl-mat4/rotateY":117,"gl-mat4/rotateZ":118,"gl-mat4/scale":119,"gl-mat4/translate":120,"gl-vec3/normalize":153,"mat4-interpolate":173}],176:[function(require,module,exports){
++'use strict'
+ 
+-Object.defineProperties(proto, {
+-  minFilter: {
+-    get: function() {
+-      return this._minFilter
+-    },
+-    set: function(v) {
+-      this.bind()
+-      var gl = this.gl
+-      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
+-        if(!gl.getExtension('OES_texture_float_linear')) {
+-          v = gl.NEAREST
+-        }
+-      }
+-      if(filterTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown filter mode ' + v)
+-      }
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, v)
+-      return this._minFilter = v
+-    }
+-  },
+-  magFilter: {
+-    get: function() {
+-      return this._magFilter
+-    },
+-    set: function(v) {
+-      this.bind()
+-      var gl = this.gl
+-      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
+-        if(!gl.getExtension('OES_texture_float_linear')) {
+-          v = gl.NEAREST
+-        }
+-      }
+-      if(filterTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown filter mode ' + v)
+-      }
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, v)
+-      return this._magFilter = v
+-    }
+-  },
+-  mipSamples: {
+-    get: function() {
+-      return this._anisoSamples
+-    },
+-    set: function(i) {
+-      var psamples = this._anisoSamples
+-      this._anisoSamples = Math.max(i, 1)|0
+-      if(psamples !== this._anisoSamples) {
+-        var ext = gl.getExtension('EXT_texture_filter_anisotropic')
+-        if(ext) {
+-          this.gl.texParameterf(this.gl.TEXTURE_2D, ext.TEXTURE_MAX_ANISOTROPY_EXT, this._anisoSamples)
+-        }
+-      }
+-      return this._anisoSamples
+-    }
+-  },
+-  wrapS: {
+-    get: function() {
+-      return this._wrapS
+-    },
+-    set: function(v) {
+-      this.bind()
+-      if(wrapTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
+-      }
+-      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_S, v)
+-      return this._wrapS = v
++module.exports = monotoneConvexHull2D
++
++var orient = require('robust-orientation')[3]
++
++function monotoneConvexHull2D(points) {
++  var n = points.length
++
++  if(n < 3) {
++    var result = new Array(n)
++    for(var i=0; i<n; ++i) {
++      result[i] = i
+     }
+-  },
+-  wrapT: {
+-    get: function() {
+-      return this._wrapT
+-    },
+-    set: function(v) {
+-      this.bind()
+-      if(wrapTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
+-      }
+-      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_T, v)
+-      return this._wrapT = v
++
++    if(n === 2 &&
++       points[0][0] === points[1][0] &&
++       points[0][1] === points[1][1]) {
++      return [0]
+     }
+-  },
+-  wrap: {
+-    get: function() {
+-      return this._wrapVector
+-    },
+-    set: function(v) {
+-      if(!Array.isArray(v)) {
+-        v = [v,v]
+-      }
+-      if(v.length !== 2) {
+-        throw new Error('gl-texture2d: Must specify wrap mode for rows and columns')
+-      }
+-      for(var i=0; i<2; ++i) {
+-        if(wrapTypes.indexOf(v[i]) < 0) {
+-          throw new Error('gl-texture2d: Unknown wrap mode ' + v)
+-        }
+-      }
+-      this._wrapS = v[0]
+-      this._wrapT = v[1]
+ 
+-      var gl = this.gl
+-      this.bind()
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, this._wrapS)
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, this._wrapT)
++    return result
++  }
+ 
+-      return v
+-    }
+-  },
+-  shape: {
+-    get: function() {
+-      return this._shapeVector
+-    },
+-    set: function(x) {
+-      if(!Array.isArray(x)) {
+-        x = [x|0,x|0]
+-      } else {
+-        if(x.length !== 2) {
+-          throw new Error('gl-texture2d: Invalid texture shape')
+-        }
+-      }
+-      reshapeTexture(this, x[0]|0, x[1]|0)
+-      return [x[0]|0, x[1]|0]
++  //Sort point indices along x-axis
++  var sorted = new Array(n)
++  for(var i=0; i<n; ++i) {
++    sorted[i] = i
++  }
++  sorted.sort(function(a,b) {
++    var d = points[a][0]-points[b][0]
++    if(d) {
++      return d
+     }
+-  },
+-  width: {
+-    get: function() {
+-      return this._shape[0]
+-    },
+-    set: function(w) {
+-      w = w|0
+-      reshapeTexture(this, w, this._shape[1])
+-      return w
++    return points[a][1] - points[b][1]
++  })
++
++  //Construct upper and lower hulls
++  var lower = [sorted[0], sorted[1]]
++  var upper = [sorted[0], sorted[1]]
++
++  for(var i=2; i<n; ++i) {
++    var idx = sorted[i]
++    var p   = points[idx]
++
++    //Insert into lower list
++    var m = lower.length
++    while(m > 1 && orient(
++        points[lower[m-2]], 
++        points[lower[m-1]], 
++        p) <= 0) {
++      m -= 1
++      lower.pop()
+     }
+-  },
+-  height: {
+-    get: function() {
+-      return this._shape[1]
+-    },
+-    set: function(h) {
+-      h = h|0
+-      reshapeTexture(this, this._shape[0], h)
+-      return h
++    lower.push(idx)
++
++    //Insert into upper list
++    m = upper.length
++    while(m > 1 && orient(
++        points[upper[m-2]], 
++        points[upper[m-1]], 
++        p) >= 0) {
++      m -= 1
++      upper.pop()
+     }
++    upper.push(idx)
+   }
+-})
+ 
+-proto.bind = function(unit) {
+-  var gl = this.gl
+-  if(unit !== undefined) {
+-    gl.activeTexture(gl.TEXTURE0 + (unit|0))
++  //Merge lists together
++  var result = new Array(upper.length + lower.length - 2)
++  var ptr    = 0
++  for(var i=0, nl=lower.length; i<nl; ++i) {
++    result[ptr++] = lower[i]
+   }
+-  gl.bindTexture(gl.TEXTURE_2D, this.handle)
+-  if(unit !== undefined) {
+-    return (unit|0)
++  for(var j=upper.length-2; j>0; --j) {
++    result[ptr++] = upper[j]
+   }
+-  return gl.getParameter(gl.ACTIVE_TEXTURE) - gl.TEXTURE0
+-}
+ 
+-proto.dispose = function() {
+-  this.gl.deleteTexture(this.handle)
++  //Return result
++  return result
+ }
++},{"robust-orientation":219}],177:[function(require,module,exports){
++'use strict'
+ 
+-proto.generateMipmap = function() {
+-  this.bind()
+-  this.gl.generateMipmap(this.gl.TEXTURE_2D)
++module.exports = mouseListen
+ 
+-  //Update mip levels
+-  var l = Math.min(this._shape[0], this._shape[1])
+-  for(var i=0; l>0; ++i, l>>>=1) {
+-    if(this._mipLevels.indexOf(i) < 0) {
+-      this._mipLevels.push(i)
+-    }
++var mouse = require('mouse-event')
++
++function mouseListen(element, callback) {
++  if(!callback) {
++    callback = element
++    element = window
+   }
+-}
+ 
+-proto.setPixels = function(data, x_off, y_off, mip_level) {
+-  var gl = this.gl
+-  this.bind()
+-  if(Array.isArray(x_off)) {
+-    mip_level = y_off
+-    y_off = x_off[1]|0
+-    x_off = x_off[0]|0
+-  } else {
+-    x_off = x_off || 0
+-    y_off = y_off || 0
++  var buttonState = 0
++  var x = 0
++  var y = 0
++  var mods = {
++    shift:   false,
++    alt:     false,
++    control: false,
++    meta:    false
+   }
+-  mip_level = mip_level || 0
+-  if(data instanceof HTMLCanvasElement ||
+-     data instanceof ImageData ||
+-     data instanceof HTMLImageElement ||
+-     data instanceof HTMLVideoElement) {
+-    var needsMip = this._mipLevels.indexOf(mip_level) < 0
+-    if(needsMip) {
+-      gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, this.type, data)
+-      this._mipLevels.push(mip_level)
+-    } else {
+-      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, this.format, this.type, data)
++  var attached = false
++
++  function updateMods(ev) {
++    var changed = false
++    if('altKey' in ev) {
++      changed = changed || ev.altKey !== mods.alt
++      mods.alt = !!ev.altKey
+     }
+-  } else if(data.shape && data.stride && data.data) {
+-    if(data.shape.length < 2 ||
+-       x_off + data.shape[1] > this._shape[1]>>>mip_level ||
+-       y_off + data.shape[0] > this._shape[0]>>>mip_level ||
+-       x_off < 0 ||
+-       y_off < 0) {
+-      throw new Error('gl-texture2d: Texture dimensions are out of bounds')
++    if('shiftKey' in ev) {
++      changed = changed || ev.shiftKey !== mods.shift
++      mods.shift = !!ev.shiftKey
+     }
+-    texSubImageArray(gl, x_off, y_off, mip_level, this.format, this.type, this._mipLevels, data)
+-  } else {
+-    throw new Error('gl-texture2d: Unsupported data type')
++    if('ctrlKey' in ev) {
++      changed = changed || ev.ctrlKey !== mods.control
++      mods.control = !!ev.ctrlKey
++    }
++    if('metaKey' in ev) {
++      changed = changed || ev.metaKey !== mods.meta
++      mods.meta = !!ev.metaKey
++    }
++    return changed
+   }
+-}
+ 
++  function handleEvent(nextButtons, ev) {
++    var nextX = mouse.x(ev)
++    var nextY = mouse.y(ev)
++    if('buttons' in ev) {
++      nextButtons = ev.buttons|0
++    }
++    if(nextButtons !== buttonState ||
++       nextX !== x ||
++       nextY !== y ||
++       updateMods(ev)) {
++      buttonState = nextButtons|0
++      x = nextX||0
++      y = nextY||0
++      callback && callback(buttonState, x, y, mods)
++    }
++  }
+ 
+-function isPacked(shape, stride) {
+-  if(shape.length === 3) {
+-    return  (stride[2] === 1) &&
+-            (stride[1] === shape[0]*shape[2]) &&
+-            (stride[0] === shape[2])
++  function clearState(ev) {
++    handleEvent(0, ev)
+   }
+-  return  (stride[0] === 1) &&
+-          (stride[1] === shape[0])
+-}
+ 
+-function texSubImageArray(gl, x_off, y_off, mip_level, cformat, ctype, mipLevels, array) {
+-  var dtype = array.dtype
+-  var shape = array.shape.slice()
+-  if(shape.length < 2 || shape.length > 3) {
+-    throw new Error('gl-texture2d: Invalid ndarray, must be 2d or 3d')
++  function handleBlur() {
++    if(buttonState ||
++      x ||
++      y ||
++      mods.shift ||
++      mods.alt ||
++      mods.meta ||
++      mods.control) {
++
++      x = y = 0
++      buttonState = 0
++      mods.shift = mods.alt = mods.control = mods.meta = false
++      callback && callback(0, 0, 0, mods)
++    }
+   }
+-  var type = 0, format = 0
+-  var packed = isPacked(shape, array.stride.slice())
+-  if(dtype === 'float32') {
+-    type = gl.FLOAT
+-  } else if(dtype === 'float64') {
+-    type = gl.FLOAT
+-    packed = false
+-    dtype = 'float32'
+-  } else if(dtype === 'uint8') {
+-    type = gl.UNSIGNED_BYTE
+-  } else {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
+-    dtype = 'uint8'
++
++  function handleMods(ev) {
++    if(updateMods(ev)) {
++      callback && callback(buttonState, x, y, mods)
++    }
+   }
+-  var channels = 1
+-  if(shape.length === 2) {
+-    format = gl.LUMINANCE
+-    shape = [shape[0], shape[1], 1]
+-    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
+-  } else if(shape.length === 3) {
+-    if(shape[2] === 1) {
+-      format = gl.ALPHA
+-    } else if(shape[2] === 2) {
+-      format = gl.LUMINANCE_ALPHA
+-    } else if(shape[2] === 3) {
+-      format = gl.RGB
+-    } else if(shape[2] === 4) {
+-      format = gl.RGBA
++
++  function handleMouseMove(ev) {
++    if(mouse.buttons(ev) === 0) {
++      handleEvent(0, ev)
+     } else {
+-      throw new Error('gl-texture2d: Invalid shape for pixel coords')
++      handleEvent(buttonState, ev)
+     }
+-    channels = shape[2]
+-  } else {
+-    throw new Error('gl-texture2d: Invalid shape for texture')
+-  }
+-  //For 1-channel textures allow conversion between formats
+-  if((format  === gl.LUMINANCE || format  === gl.ALPHA) &&
+-     (cformat === gl.LUMINANCE || cformat === gl.ALPHA)) {
+-    format = cformat
+   }
+-  if(format !== cformat) {
+-    throw new Error('gl-texture2d: Incompatible texture format for setPixels')
++
++  function handleMouseDown(ev) {
++    handleEvent(buttonState | mouse.buttons(ev), ev)
+   }
+-  var size = array.size
+-  var needsMip = mipLevels.indexOf(mip_level) < 0
+-  if(needsMip) {
+-    mipLevels.push(mip_level)
++
++  function handleMouseUp(ev) {
++    handleEvent(buttonState & ~mouse.buttons(ev), ev)
+   }
+-  if(type === ctype && packed) {
+-    //Array data types are compatible, can directly copy into texture
+-    if(array.offset === 0 && array.data.length === size) {
+-      if(needsMip) {
+-        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data)
+-      } else {
+-        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data)
+-      }
+-    } else {
+-      if(needsMip) {
+-        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data.subarray(array.offset, array.offset+size))
+-      } else {
+-        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data.subarray(array.offset, array.offset+size))
+-      }
+-    }
+-  } else {
+-    //Need to do type conversion to pack data into buffer
+-    var pack_buffer
+-    if(ctype === gl.FLOAT) {
+-      pack_buffer = pool.mallocFloat32(size)
+-    } else {
+-      pack_buffer = pool.mallocUint8(size)
++
++  function attachListeners() {
++    if(attached) {
++      return
+     }
+-    var pack_view = ndarray(pack_buffer, shape, [shape[2], shape[2]*shape[0], 1])
+-    if(type === gl.FLOAT && ctype === gl.UNSIGNED_BYTE) {
+-      convertFloatToUint8(pack_view, array)
+-    } else {
+-      ops.assign(pack_view, array)
++    attached = true
++
++    element.addEventListener('mousemove', handleMouseMove)
++
++    element.addEventListener('mousedown', handleMouseDown)
++
++    element.addEventListener('mouseup', handleMouseUp)
++
++    element.addEventListener('mouseleave', clearState)
++    element.addEventListener('mouseenter', clearState)
++    element.addEventListener('mouseout', clearState)
++    element.addEventListener('mouseover', clearState)
++
++    element.addEventListener('blur', handleBlur)
++
++    element.addEventListener('keyup', handleMods)
++    element.addEventListener('keydown', handleMods)
++    element.addEventListener('keypress', handleMods)
++
++    if(element !== window) {
++      window.addEventListener('blur', handleBlur)
++
++      window.addEventListener('keyup', handleMods)
++      window.addEventListener('keydown', handleMods)
++      window.addEventListener('keypress', handleMods)
+     }
+-    if(needsMip) {
+-      gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, pack_buffer.subarray(0, size))
+-    } else {
+-      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, pack_buffer.subarray(0, size))
++  }
++
++  function detachListeners() {
++    if(!attached) {
++      return
+     }
+-    if(ctype === gl.FLOAT) {
+-      pool.freeFloat32(pack_buffer)
+-    } else {
+-      pool.freeUint8(pack_buffer)
++    attached = false
++
++    element.removeEventListener('mousemove', handleMouseMove)
++
++    element.removeEventListener('mousedown', handleMouseDown)
++
++    element.removeEventListener('mouseup', handleMouseUp)
++
++    element.removeEventListener('mouseleave', clearState)
++    element.removeEventListener('mouseenter', clearState)
++    element.removeEventListener('mouseout', clearState)
++    element.removeEventListener('mouseover', clearState)
++
++    element.removeEventListener('blur', handleBlur)
++
++    element.removeEventListener('keyup', handleMods)
++    element.removeEventListener('keydown', handleMods)
++    element.removeEventListener('keypress', handleMods)
++
++    if(element !== window) {
++      window.removeEventListener('blur', handleBlur)
++
++      window.removeEventListener('keyup', handleMods)
++      window.removeEventListener('keydown', handleMods)
++      window.removeEventListener('keypress', handleMods)
+     }
+   }
+-}
+ 
+-function initTexture(gl) {
+-  var tex = gl.createTexture()
+-  gl.bindTexture(gl.TEXTURE_2D, tex)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
+-  return tex
+-}
++  //Attach listeners
++  attachListeners()
+ 
+-function createTextureShape(gl, width, height, format, type) {
+-  var maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(width < 0 || width > maxTextureSize || height < 0 || height  > maxTextureSize) {
+-    throw new Error('gl-texture2d: Invalid texture shape')
+-  }
+-  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
+-    throw new Error('gl-texture2d: Floating point textures not supported on this platform')
++  var result = {
++    element: element
+   }
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, format, type, null)
+-  return new Texture2D(gl, tex, width, height, format, type)
+-}
+ 
+-function createTextureDOM(gl, element, format, type) {
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, format, type, element)
+-  return new Texture2D(gl, tex, element.width|0, element.height|0, format, type)
++  Object.defineProperties(result, {
++    enabled: {
++      get: function() { return attached },
++      set: function(f) {
++        if(f) {
++          attachListeners()
++        } else {
++          detachListeners
++        }
++      },
++      enumerable: true
++    },
++    buttons: {
++      get: function() { return buttonState },
++      enumerable: true
++    },
++    x: {
++      get: function() { return x },
++      enumerable: true
++    },
++    y: {
++      get: function() { return y },
++      enumerable: true
++    },
++    mods: {
++      get: function() { return mods },
++      enumerable: true
++    }
++  })
++
++  return result
+ }
+ 
+-//Creates a texture from an ndarray
+-function createTextureArray(gl, array) {
+-  var dtype = array.dtype
+-  var shape = array.shape.slice()
+-  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(shape[0] < 0 || shape[0] > maxSize || shape[1] < 0 || shape[1] > maxSize) {
+-    throw new Error('gl-texture2d: Invalid texture size')
+-  }
+-  var packed = isPacked(shape, array.stride.slice())
+-  var type = 0
+-  if(dtype === 'float32') {
+-    type = gl.FLOAT
+-  } else if(dtype === 'float64') {
+-    type = gl.FLOAT
+-    packed = false
+-    dtype = 'float32'
+-  } else if(dtype === 'uint8') {
+-    type = gl.UNSIGNED_BYTE
+-  } else {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
+-    dtype = 'uint8'
+-  }
+-  var format = 0
+-  if(shape.length === 2) {
+-    format = gl.LUMINANCE
+-    shape = [shape[0], shape[1], 1]
+-    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
+-  } else if(shape.length === 3) {
+-    if(shape[2] === 1) {
+-      format = gl.ALPHA
+-    } else if(shape[2] === 2) {
+-      format = gl.LUMINANCE_ALPHA
+-    } else if(shape[2] === 3) {
+-      format = gl.RGB
+-    } else if(shape[2] === 4) {
+-      format = gl.RGBA
+-    } else {
+-      throw new Error('gl-texture2d: Invalid shape for pixel coords')
+-    }
+-  } else {
+-    throw new Error('gl-texture2d: Invalid shape for texture')
+-  }
+-  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
+-  }
+-  var buffer, buf_store
+-  var size = array.size
+-  if(!packed) {
+-    var stride = [shape[2], shape[2]*shape[0], 1]
+-    buf_store = pool.malloc(size, dtype)
+-    var buf_array = ndarray(buf_store, shape, stride, 0)
+-    if((dtype === 'float32' || dtype === 'float64') && type === gl.UNSIGNED_BYTE) {
+-      convertFloatToUint8(buf_array, array)
+-    } else {
+-      ops.assign(buf_array, array)
++},{"mouse-event":178}],178:[function(require,module,exports){
++'use strict'
++
++function mouseButtons(ev) {
++  if(typeof ev === 'object') {
++    if('buttons' in ev) {
++      return ev.buttons
++    } else if('which' in ev) {
++      var b = ev.which
++      if(b === 2) {
++        return 4
++      } else if(b === 3) {
++        return 2
++      } else if(b > 0) {
++        return 1<<(b-1)
++      }
++    } else if('button' in ev) {
++      var b = ev.button
++      if(b === 1) {
++        return 4
++      } else if(b === 2) {
++        return 2
++      } else if(b >= 0) {
++        return 1<<b
++      }
+     }
+-    buffer = buf_store.subarray(0, size)
+-  } else if (array.offset === 0 && array.data.length === size) {
+-    buffer = array.data
+-  } else {
+-    buffer = array.data.subarray(array.offset, array.offset + size)
+   }
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, shape[0], shape[1], 0, format, type, buffer)
+-  if(!packed) {
+-    pool.free(buf_store)
++  return 0
++}
++exports.buttons = mouseButtons
++
++function mouseElement(ev) {
++  return ev.target || ev.srcElement || window
++}
++exports.element = mouseElement
++
++function mouseRelativeX(ev) {
++  if(typeof ev === 'object') {
++    if('offsetX' in ev) {
++      return ev.offsetX
++    }
++    var target = mouseElement(ev)
++    var bounds = target.getBoundingClientRect()
++    return ev.clientX - bounds.left
+   }
+-  return new Texture2D(gl, tex, shape[0], shape[1], format, type)
++  return 0
+ }
++exports.x = mouseRelativeX
+ 
+-function createTexture2D(gl) {
+-  if(arguments.length <= 1) {
+-    throw new Error('gl-texture2d: Missing arguments for texture2d constructor')
+-  }
+-  if(!linearTypes) {
+-    lazyInitLinearTypes(gl)
+-  }
+-  if(typeof arguments[1] === 'number') {
+-    return createTextureShape(gl, arguments[1], arguments[2], arguments[3]||gl.RGBA, arguments[4]||gl.UNSIGNED_BYTE)
+-  }
+-  if(Array.isArray(arguments[1])) {
+-    return createTextureShape(gl, arguments[1][0]|0, arguments[1][1]|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
+-  }
+-  if(typeof arguments[1] === 'object') {
+-    var obj = arguments[1]
+-    if(obj instanceof HTMLCanvasElement ||
+-       obj instanceof HTMLImageElement ||
+-       obj instanceof HTMLVideoElement ||
+-       obj instanceof ImageData) {
+-      return createTextureDOM(gl, obj, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
+-    } else if(obj.shape && obj.data && obj.stride) {
+-      return createTextureArray(gl, obj)
++function mouseRelativeY(ev) {
++  if(typeof ev === 'object') {
++    if('offsetY' in ev) {
++      return ev.offsetY
+     }
++    var target = mouseElement(ev)
++    var bounds = target.getBoundingClientRect()
++    return ev.clientY - bounds.top
+   }
+-  throw new Error('gl-texture2d: Invalid arguments for texture2d constructor')
++  return 0
+ }
++exports.y = mouseRelativeY
+ 
+-},{"ndarray":219,"ndarray-ops":218,"typedarray-pool":242}],189:[function(require,module,exports){
+-"use strict"
++},{}],179:[function(require,module,exports){
++'use strict'
+ 
+-function doBind(gl, elements, attributes) {
+-  if(elements) {
+-    elements.bind()
+-  } else {
+-    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null)
++var toPX = require('to-px')
++
++module.exports = mouseWheelListen
++
++function mouseWheelListen(element, callback, noScroll) {
++  if(typeof element === 'function') {
++    noScroll = !!callback
++    callback = element
++    element = window
+   }
+-  var nattribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS)|0
+-  if(attributes) {
+-    if(attributes.length > nattribs) {
+-      throw new Error("gl-vao: Too many vertex attributes")
+-    }
+-    for(var i=0; i<attributes.length; ++i) {
+-      var attrib = attributes[i]
+-      if(attrib.buffer) {
+-        var buffer = attrib.buffer
+-        var size = attrib.size || 4
+-        var type = attrib.type || gl.FLOAT
+-        var normalized = !!attrib.normalized
+-        var stride = attrib.stride || 0
+-        var offset = attrib.offset || 0
+-        buffer.bind()
+-        gl.enableVertexAttribArray(i)
+-        gl.vertexAttribPointer(i, size, type, normalized, stride, offset)
+-      } else {
+-        if(typeof attrib === "number") {
+-          gl.vertexAttrib1f(i, attrib)
+-        } else if(attrib.length === 1) {
+-          gl.vertexAttrib1f(i, attrib[0])
+-        } else if(attrib.length === 2) {
+-          gl.vertexAttrib2f(i, attrib[0], attrib[1])
+-        } else if(attrib.length === 3) {
+-          gl.vertexAttrib3f(i, attrib[0], attrib[1], attrib[2])
+-        } else if(attrib.length === 4) {
+-          gl.vertexAttrib4f(i, attrib[0], attrib[1], attrib[2], attrib[3])
+-        } else {
+-          throw new Error("gl-vao: Invalid vertex attribute")
+-        }
+-        gl.disableVertexAttribArray(i)
+-      }
++  var lineHeight = toPX('ex', element)
++  var listener = function(ev) {
++    if(noScroll) {
++      ev.preventDefault()
+     }
+-    for(; i<nattribs; ++i) {
+-      gl.disableVertexAttribArray(i)
++    var dx = ev.deltaX || 0
++    var dy = ev.deltaY || 0
++    var dz = ev.deltaZ || 0
++    var mode = ev.deltaMode
++    var scale = 1
++    switch(mode) {
++      case 1:
++        scale = lineHeight
++      break
++      case 2:
++        scale = window.innerHeight
++      break
+     }
+-  } else {
+-    gl.bindBuffer(gl.ARRAY_BUFFER, null)
+-    for(var i=0; i<nattribs; ++i) {
+-      gl.disableVertexAttribArray(i)
++    dx *= scale
++    dy *= scale
++    dz *= scale
++    if(dx || dy || dz) {
++      return callback(dx, dy, dz, ev)
+     }
+   }
++  element.addEventListener('wheel', listener)
++  return listener
+ }
+ 
+-module.exports = doBind
+-},{}],190:[function(require,module,exports){
++},{"to-px":241}],180:[function(require,module,exports){
+ "use strict"
+ 
+-var bindAttribs = require("./do-bind.js")
++var pool = require("typedarray-pool")
+ 
+-function VAOEmulated(gl) {
+-  this.gl = gl
+-  this._elements = null
+-  this._attributes = null
+-  this._elementsType = gl.UNSIGNED_SHORT
+-}
++module.exports = createSurfaceExtractor
+ 
+-VAOEmulated.prototype.bind = function() {
+-  bindAttribs(this.gl, this._elements, this._attributes)
++//Helper macros
++function array(i) {
++  return "a" + i
+ }
+-
+-VAOEmulated.prototype.update = function(attributes, elements, elementsType) {
+-  this._elements = elements
+-  this._attributes = attributes
+-  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
++function data(i) {
++  return "d" + i
+ }
+-
+-VAOEmulated.prototype.dispose = function() { }
+-VAOEmulated.prototype.unbind = function() { }
+-
+-VAOEmulated.prototype.draw = function(mode, count, offset) {
+-  offset = offset || 0
+-  var gl = this.gl
+-  if(this._elements) {
+-    gl.drawElements(mode, count, this._elementsType, offset)
+-  } else {
+-    gl.drawArrays(mode, offset, count)
+-  }
++function cube(i,bitmask) {
++  return "c" + i + "_" + bitmask
+ }
+-
+-function createVAOEmulated(gl) {
+-  return new VAOEmulated(gl)
++function shape(i) {
++  return "s" + i
+ }
+-
+-module.exports = createVAOEmulated
+-},{"./do-bind.js":189}],191:[function(require,module,exports){
+-"use strict"
+-
+-var bindAttribs = require("./do-bind.js")
+-
+-function VertexAttribute(location, dimension, a, b, c, d) {
+-  this.location = location
+-  this.dimension = dimension
+-  this.a = a
+-  this.b = b
+-  this.c = c
+-  this.d = d
++function stride(i,j) {
++  return "t" + i + "_" + j
+ }
+-
+-VertexAttribute.prototype.bind = function(gl) {
+-  switch(this.dimension) {
+-    case 1:
+-      gl.vertexAttrib1f(this.location, this.a)
+-    break
+-    case 2:
+-      gl.vertexAttrib2f(this.location, this.a, this.b)
+-    break
+-    case 3:
+-      gl.vertexAttrib3f(this.location, this.a, this.b, this.c)
+-    break
+-    case 4:
+-      gl.vertexAttrib4f(this.location, this.a, this.b, this.c, this.d)
+-    break
+-  }
++function offset(i) {
++  return "o" + i
+ }
+-
+-function VAONative(gl, ext, handle) {
+-  this.gl = gl
+-  this._ext = ext
+-  this.handle = handle
+-  this._attribs = []
+-  this._useElements = false
+-  this._elementsType = gl.UNSIGNED_SHORT
++function scalar(i) {
++  return "x" + i
+ }
+-
+-VAONative.prototype.bind = function() {
+-  this._ext.bindVertexArrayOES(this.handle)
+-  for(var i=0; i<this._attribs.length; ++i) {
+-    this._attribs[i].bind(this.gl)
+-  }
++function pointer(i) {
++  return "p" + i
+ }
+-
+-VAONative.prototype.unbind = function() {
+-  this._ext.bindVertexArrayOES(null)
++function delta(i,bitmask) {
++  return "d" + i + "_" + bitmask
+ }
+-
+-VAONative.prototype.dispose = function() {
+-  this._ext.deleteVertexArrayOES(this.handle)
++function index(i) {
++  return "i" + i
+ }
+-
+-VAONative.prototype.update = function(attributes, elements, elementsType) {
+-  this.bind()
+-  bindAttribs(this.gl, elements, attributes)
+-  this.unbind()
+-  this._attribs.length = 0
+-  if(attributes)
+-  for(var i=0; i<attributes.length; ++i) {
+-    var a = attributes[i]
+-    if(typeof a === "number") {
+-      this._attribs.push(new VertexAttribute(i, 1, a))
+-    } else if(Array.isArray(a)) {
+-      this._attribs.push(new VertexAttribute(i, a.length, a[0], a[1], a[2], a[3]))
+-    }
+-  }
+-  this._useElements = !!elements
+-  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
++function step(i,j) {
++  return "u" + i + "_" + j
+ }
+-
+-VAONative.prototype.draw = function(mode, count, offset) {
+-  offset = offset || 0
+-  var gl = this.gl
+-  if(this._useElements) {
+-    gl.drawElements(mode, count, this._elementsType, offset)
+-  } else {
+-    gl.drawArrays(mode, offset, count)
+-  }
++function pcube(bitmask) {
++  return "b" + bitmask
+ }
+-
+-function createVAONative(gl, ext) {
+-  return new VAONative(gl, ext, ext.createVertexArrayOES())
++function qcube(bitmask) {
++  return "y" + bitmask
+ }
+-
+-module.exports = createVAONative
+-},{"./do-bind.js":189}],192:[function(require,module,exports){
+-"use strict"
+-
+-var createVAONative = require("./lib/vao-native.js")
+-var createVAOEmulated = require("./lib/vao-emulated.js")
+-
+-function createVAO(gl, attributes, elements, elementsType) {
+-  var ext = gl.getExtension('OES_vertex_array_object')
+-  var vao
+-  if(ext) {
+-    vao = createVAONative(gl, ext)
+-  } else {
+-    vao = createVAOEmulated(gl)
+-  }
+-  vao.update(attributes, elements, elementsType)
+-  return vao
++function pdelta(bitmask) {
++  return "e" + bitmask
+ }
+-
+-module.exports = createVAO
+-
+-},{"./lib/vao-emulated.js":190,"./lib/vao-native.js":191}],193:[function(require,module,exports){
+-module.exports = transformMat4
+-
+-/**
+- * Transforms the vec4 with a mat4.
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec4} out
+- */
+-function transformMat4 (out, a, m) {
+-  var x = a[0], y = a[1], z = a[2], w = a[3]
+-  out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w
+-  out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w
+-  out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w
+-  out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w
+-  return out
++function vert(i) {
++  return "v" + i
+ }
++var VERTEX_IDS = "V"
++var PHASES = "P"
++var VERTEX_COUNT = "N"
++var POOL_SIZE = "Q"
++var POINTER = "X"
++var TEMPORARY = "T"
+ 
+-},{}],194:[function(require,module,exports){
+-module.exports = tokenize
+-
+-var literals100 = require('./lib/literals')
+-  , operators = require('./lib/operators')
+-  , builtins100 = require('./lib/builtins')
+-  , literals300es = require('./lib/literals-300es')
+-  , builtins300es = require('./lib/builtins-300es')
++function permBitmask(dimension, mask, order) {
++  var r = 0
++  for(var i=0; i<dimension; ++i) {
++    if(mask & (1<<i)) {
++      r |= (1<<order[i])
++    }
++  }
++  return r
++}
+ 
+-var NORMAL = 999          // <-- never emitted
+-  , TOKEN = 9999          // <-- never emitted
+-  , BLOCK_COMMENT = 0
+-  , LINE_COMMENT = 1
+-  , PREPROCESSOR = 2
+-  , OPERATOR = 3
+-  , INTEGER = 4
+-  , FLOAT = 5
+-  , IDENT = 6
+-  , BUILTIN = 7
+-  , KEYWORD = 8
+-  , WHITESPACE = 9
+-  , EOF = 10
+-  , HEX = 11
++//Generates the surface procedure
++function compileSurfaceProcedure(vertexFunc, faceFunc, phaseFunc, scalarArgs, order, typesig) {
++  var arrayArgs = typesig.length
++  var dimension = order.length
+ 
+-var map = [
+-    'block-comment'
+-  , 'line-comment'
+-  , 'preprocessor'
+-  , 'operator'
+-  , 'integer'
+-  , 'float'
+-  , 'ident'
+-  , 'builtin'
+-  , 'keyword'
+-  , 'whitespace'
+-  , 'eof'
+-  , 'integer'
+-]
++  if(dimension < 2) {
++    throw new Error("ndarray-extract-contour: Dimension must be at least 2")
++  }
+ 
+-function tokenize(opt) {
+-  var i = 0
+-    , total = 0
+-    , mode = NORMAL
+-    , c
+-    , last
+-    , content = []
+-    , tokens = []
+-    , token_idx = 0
+-    , token_offs = 0
+-    , line = 1
+-    , col = 0
+-    , start = 0
+-    , isnum = false
+-    , isoperator = false
+-    , input = ''
+-    , len
++  var funcName = "extractContour" + order.join("_")
++  var code = []
++  var vars = []
++  var args = []
+ 
+-  opt = opt || {}
+-  var allBuiltins = builtins100
+-  var allLiterals = literals100
+-  if (opt.version === '300 es') {
+-    allBuiltins = builtins300es
+-    allLiterals = literals300es
++  //Assemble arguments
++  for(var i=0; i<arrayArgs; ++i) {
++    args.push(array(i))  
+   }
+-
+-  return function(data) {
+-    tokens = []
+-    if (data !== null) return write(data)
+-    return end()
++  for(var i=0; i<scalarArgs; ++i) {
++    args.push(scalar(i))
+   }
+ 
+-  function token(data) {
+-    if (data.length) {
+-      tokens.push({
+-        type: map[mode]
+-      , data: data
+-      , position: start
+-      , line: line
+-      , column: col
+-      })
++  //Shape
++  for(var i=0; i<dimension; ++i) {
++    vars.push(shape(i) + "=" + array(0) + ".shape[" + i + "]|0")
++  }
++  //Data, stride, offset pointers
++  for(var i=0; i<arrayArgs; ++i) {
++    vars.push(data(i) + "=" + array(i) + ".data",
++              offset(i) + "=" + array(i) + ".offset|0")
++    for(var j=0; j<dimension; ++j) {
++      vars.push(stride(i,j) + "=" + array(i) + ".stride[" + j + "]|0")
+     }
+   }
+-
+-  function write(chunk) {
+-    i = 0
+-    input += chunk
+-    len = input.length
+-
+-    var last
+-
+-    while(c = input[i], i < len) {
+-      last = i
+-
+-      switch(mode) {
+-        case BLOCK_COMMENT: i = block_comment(); break
+-        case LINE_COMMENT: i = line_comment(); break
+-        case PREPROCESSOR: i = preprocessor(); break
+-        case OPERATOR: i = operator(); break
+-        case INTEGER: i = integer(); break
+-        case HEX: i = hex(); break
+-        case FLOAT: i = decimal(); break
+-        case TOKEN: i = readtoken(); break
+-        case WHITESPACE: i = whitespace(); break
+-        case NORMAL: i = normal(); break
+-      }
+-
+-      if(last !== i) {
+-        switch(input[last]) {
+-          case '\n': col = 0; ++line; break
+-          default: ++col; break
++  //Pointer, delta and cube variables
++  for(var i=0; i<arrayArgs; ++i) {
++    vars.push(pointer(i) + "=" + offset(i))
++    vars.push(cube(i,0))
++    for(var j=1; j<(1<<dimension); ++j) {
++      var ptrStr = []
++      for(var k=0; k<dimension; ++k) {
++        if(j & (1<<k)) {
++          ptrStr.push("-" + stride(i,k))
+         }
+       }
++      vars.push(delta(i,j) + "=(" + ptrStr.join("") + ")|0")
++      vars.push(cube(i,j) + "=0")
+     }
+-
+-    total += i
+-    input = input.slice(i)
+-    return tokens
+   }
+-
+-  function end(chunk) {
+-    if(content.length) {
+-      token(content.join(''))
++  //Create step variables
++  for(var i=0; i<arrayArgs; ++i) {
++    for(var j=0; j<dimension; ++j) {
++      var stepVal = [ stride(i,order[j]) ]
++      if(j > 0) {
++        stepVal.push(stride(i, order[j-1]) + "*" + shape(order[j-1]) )
++      }
++      vars.push(step(i,order[j]) + "=(" + stepVal.join("-") + ")|0")
+     }
+-
+-    mode = EOF
+-    token('(eof)')
+-    return tokens
+   }
+-
+-  function normal() {
+-    content = content.length ? [] : content
+-
+-    if(last === '/' && c === '*') {
+-      start = total + i - 1
+-      mode = BLOCK_COMMENT
+-      last = c
+-      return i + 1
+-    }
+-
+-    if(last === '/' && c === '/') {
+-      start = total + i - 1
+-      mode = LINE_COMMENT
+-      last = c
+-      return i + 1
+-    }
+-
+-    if(c === '#') {
+-      mode = PREPROCESSOR
+-      start = total + i
+-      return i
++  //Create index variables
++  for(var i=0; i<dimension; ++i) {
++    vars.push(index(i) + "=0")
++  }
++  //Vertex count
++  vars.push(VERTEX_COUNT + "=0")
++  //Compute pool size, initialize pool step
++  var sizeVariable = ["2"]
++  for(var i=dimension-2; i>=0; --i) {
++    sizeVariable.push(shape(order[i]))
++  }
++  //Previous phases and vertex_ids
++  vars.push(POOL_SIZE + "=(" + sizeVariable.join("*") + ")|0",
++            PHASES + "=mallocUint32(" + POOL_SIZE + ")",
++            VERTEX_IDS + "=mallocUint32(" + POOL_SIZE + ")",
++            POINTER + "=0")
++  //Create cube variables for phases
++  vars.push(pcube(0) + "=0")
++  for(var j=1; j<(1<<dimension); ++j) {
++    var cubeDelta = []
++    var cubeStep = [ ]
++    for(var k=0; k<dimension; ++k) {
++      if(j & (1<<k)) {
++        if(cubeStep.length === 0) {
++          cubeDelta.push("1")
++        } else {
++          cubeDelta.unshift(cubeStep.join("*"))
++        }
++      }
++      cubeStep.push(shape(order[k]))
+     }
+-
+-    if(/\s/.test(c)) {
+-      mode = WHITESPACE
+-      start = total + i
+-      return i
++    var signFlag = ""
++    if(cubeDelta[0].indexOf(shape(order[dimension-2])) < 0) {
++      signFlag = "-"
+     }
+-
+-    isnum = /\d/.test(c)
+-    isoperator = /[^\w_]/.test(c)
+-
+-    start = total + i
+-    mode = isnum ? INTEGER : isoperator ? OPERATOR : TOKEN
+-    return i
++    var jperm = permBitmask(dimension, j, order)
++    vars.push(pdelta(jperm) + "=(-" + cubeDelta.join("-") + ")|0",
++              qcube(jperm) + "=(" + signFlag + cubeDelta.join("-") + ")|0",
++              pcube(jperm) + "=0")
+   }
++  vars.push(vert(0) + "=0", TEMPORARY + "=0")
+ 
+-  function whitespace() {
+-    if(/[^\s]/g.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
+-    content.push(c)
+-    last = c
+-    return i + 1
++  function forLoopBegin(i, start) {
++    code.push("for(", index(order[i]), "=", start, ";",
++      index(order[i]), "<", shape(order[i]), ";",
++      "++", index(order[i]), "){")
+   }
+ 
+-  function preprocessor() {
+-    if(c === '\n' && last !== '\\') {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
++  function forLoopEnd(i) {
++    for(var j=0; j<arrayArgs; ++j) {
++      code.push(pointer(j), "+=", step(j,order[i]), ";")
+     }
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
+-
+-  function line_comment() {
+-    return preprocessor()
++    code.push("}")
+   }
+ 
+-  function block_comment() {
+-    if(c === '/' && last === '*') {
+-      content.push(c)
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i + 1
++  function fillEmptySlice(k) {
++    for(var i=k-1; i>=0; --i) {
++      forLoopBegin(i, 0) 
++    }
++    var phaseFuncArgs = []
++    for(var i=0; i<arrayArgs; ++i) {
++      if(typesig[i]) {
++        phaseFuncArgs.push(data(i) + ".get(" + pointer(i) + ")")
++      } else {
++        phaseFuncArgs.push(data(i) + "[" + pointer(i) + "]")
++      }
++    }
++    for(var i=0; i<scalarArgs; ++i) {
++      phaseFuncArgs.push(scalar(i))
++    }
++    code.push(PHASES, "[", POINTER, "++]=phase(", phaseFuncArgs.join(), ");")
++    for(var i=0; i<k; ++i) {
++      forLoopEnd(i)
++    }
++    for(var j=0; j<arrayArgs; ++j) {
++      code.push(pointer(j), "+=", step(j,order[k]), ";")
+     }
+-
+-    content.push(c)
+-    last = c
+-    return i + 1
+   }
+ 
+-  function operator() {
+-    if(last === '.' && /\d/.test(c)) {
+-      mode = FLOAT
+-      return i
++  function processGridCell(mask) {
++    //Read in local data
++    for(var i=0; i<arrayArgs; ++i) {
++      if(typesig[i]) {
++        code.push(cube(i,0), "=", data(i), ".get(", pointer(i), ");")
++      } else {
++        code.push(cube(i,0), "=", data(i), "[", pointer(i), "];")
++      }
+     }
+ 
+-    if(last === '/' && c === '*') {
+-      mode = BLOCK_COMMENT
+-      return i
++    //Read in phase
++    var phaseFuncArgs = []
++    for(var i=0; i<arrayArgs; ++i) {
++      phaseFuncArgs.push(cube(i,0))
+     }
+-
+-    if(last === '/' && c === '/') {
+-      mode = LINE_COMMENT
+-      return i
++    for(var i=0; i<scalarArgs; ++i) {
++      phaseFuncArgs.push(scalar(i))
+     }
+-
+-    if(c === '.' && content.length) {
+-      while(determine_operator(content));
+-
+-      mode = FLOAT
+-      return i
++    
++    code.push(pcube(0), "=", PHASES, "[", POINTER, "]=phase(", phaseFuncArgs.join(), ");")
++    
++    //Read in other cube data
++    for(var j=1; j<(1<<dimension); ++j) {
++      code.push(pcube(j), "=", PHASES, "[", POINTER, "+", pdelta(j), "];")
+     }
+ 
+-    if(c === ';' || c === ')' || c === '(') {
+-      if(content.length) while(determine_operator(content));
+-      token(c)
+-      mode = NORMAL
+-      return i + 1
++    //Check for boundary crossing
++    var vertexPredicate = []
++    for(var j=1; j<(1<<dimension); ++j) {
++      vertexPredicate.push("(" + pcube(0) + "!==" + pcube(j) + ")")
+     }
++    code.push("if(", vertexPredicate.join("||"), "){")
+ 
+-    var is_composite_operator = content.length === 2 && c !== '='
+-    if(/[\w_\d\s]/.test(c) || is_composite_operator) {
+-      while(determine_operator(content));
+-      mode = NORMAL
+-      return i
++    //Read in boundary data
++    var vertexArgs = []
++    for(var i=0; i<dimension; ++i) {
++      vertexArgs.push(index(i))
+     }
+-
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
+-
+-  function determine_operator(buf) {
+-    var j = 0
+-      , idx
+-      , res
+-
+-    do {
+-      idx = operators.indexOf(buf.slice(0, buf.length + j).join(''))
+-      res = operators[idx]
+-
+-      if(idx === -1) {
+-        if(j-- + buf.length > 0) continue
+-        res = buf.slice(0, 1).join('')
++    for(var i=0; i<arrayArgs; ++i) {
++      vertexArgs.push(cube(i,0))
++      for(var j=1; j<(1<<dimension); ++j) {
++        if(typesig[i]) {
++          code.push(cube(i,j), "=", data(i), ".get(", pointer(i), "+", delta(i,j), ");")
++        } else {
++          code.push(cube(i,j), "=", data(i), "[", pointer(i), "+", delta(i,j), "];")
++        }
++        vertexArgs.push(cube(i,j))
+       }
++    }
++    for(var i=0; i<(1<<dimension); ++i) {
++      vertexArgs.push(pcube(i))
++    }
++    for(var i=0; i<scalarArgs; ++i) {
++      vertexArgs.push(scalar(i))
++    }
+ 
+-      token(res)
++    //Generate vertex
++    code.push("vertex(", vertexArgs.join(), ");",
++      vert(0), "=", VERTEX_IDS, "[", POINTER, "]=", VERTEX_COUNT, "++;")
+ 
+-      start += res.length
+-      content = content.slice(res.length)
+-      return content.length
+-    } while(1)
++    //Check for face crossings
++    var base = (1<<dimension)-1
++    var corner = pcube(base)
++    for(var j=0; j<dimension; ++j) {
++      if((mask & ~(1<<j))===0) {
++        //Check face
++        var subset = base^(1<<j)
++        var edge = pcube(subset)
++        var faceArgs = [ ]
++        for(var k=subset; k>0; k=(k-1)&subset) {
++          faceArgs.push(VERTEX_IDS + "[" + POINTER + "+" + pdelta(k) + "]")
++        }
++        faceArgs.push(vert(0))
++        for(var k=0; k<arrayArgs; ++k) {
++          if(j&1) {
++            faceArgs.push(cube(k,base), cube(k,subset))
++          } else {
++            faceArgs.push(cube(k,subset), cube(k,base))
++          }
++        }
++        if(j&1) {
++          faceArgs.push(corner, edge)
++        } else {
++          faceArgs.push(edge, corner)
++        }
++        for(var k=0; k<scalarArgs; ++k) {
++          faceArgs.push(scalar(k))
++        }
++        code.push("if(", corner, "!==", edge, "){",
++          "face(", faceArgs.join(), ")}")
++      }
++    }
++    
++    //Increment pointer, close off if statement
++    code.push("}",
++      POINTER, "+=1;")
+   }
+ 
+-  function hex() {
+-    if(/[^a-fA-F0-9]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
++  function flip() {
++    for(var j=1; j<(1<<dimension); ++j) {
++      code.push(TEMPORARY, "=", pdelta(j), ";",
++                pdelta(j), "=", qcube(j), ";",
++                qcube(j), "=", TEMPORARY, ";")
+     }
+-
+-    content.push(c)
+-    last = c
+-    return i + 1
+   }
+ 
+-  function integer() {
+-    if(c === '.') {
+-      content.push(c)
+-      mode = FLOAT
+-      last = c
+-      return i + 1
++  function createLoop(i, mask) {
++    if(i < 0) {
++      processGridCell(mask)
++      return
+     }
++    fillEmptySlice(i)
++    code.push("if(", shape(order[i]), ">0){",
++      index(order[i]), "=1;")
++    createLoop(i-1, mask|(1<<order[i]))
+ 
+-    if(/[eE]/.test(c)) {
+-      content.push(c)
+-      mode = FLOAT
+-      last = c
+-      return i + 1
++    for(var j=0; j<arrayArgs; ++j) {
++      code.push(pointer(j), "+=", step(j,order[i]), ";")
+     }
+-
+-    if(c === 'x' && content.length === 1 && content[0] === '0') {
+-      mode = HEX
+-      content.push(c)
+-      last = c
+-      return i + 1
++    if(i === dimension-1) {
++      code.push(POINTER, "=0;")
++      flip()
+     }
+-
+-    if(/[^\d]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
++    forLoopBegin(i, 2)
++    createLoop(i-1, mask)
++    if(i === dimension-1) {
++      code.push("if(", index(order[dimension-1]), "&1){",
++        POINTER, "=0;}")
++      flip()
+     }
+-
+-    content.push(c)
+-    last = c
+-    return i + 1
++    forLoopEnd(i)
++    code.push("}")
+   }
+ 
+-  function decimal() {
+-    if(c === 'f') {
+-      content.push(c)
+-      last = c
+-      i += 1
+-    }
++  createLoop(dimension-1, 0)
+ 
+-    if(/[eE]/.test(c)) {
+-      content.push(c)
+-      last = c
+-      return i + 1
+-    }
++  //Release scratch memory
++  code.push("freeUint32(", VERTEX_IDS, ");freeUint32(", PHASES, ");")
+ 
+-    if (c === '-' && /[eE]/.test(last)) {
+-      content.push(c)
+-      last = c
+-      return i + 1
+-    }
++  //Compile and link procedure
++  var procedureCode = [
++    "'use strict';",
++    "function ", funcName, "(", args.join(), "){",
++      "var ", vars.join(), ";",
++      code.join(""),
++    "}",
++    "return ", funcName ].join("")
+ 
+-    if(/[^\d]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
++  var proc = new Function(
++    "vertex", 
++    "face", 
++    "phase", 
++    "mallocUint32", 
++    "freeUint32",
++    procedureCode)
++  return proc(
++    vertexFunc, 
++    faceFunc, 
++    phaseFunc, 
++    pool.mallocUint32, 
++    pool.freeUint32)
++}
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
++function createSurfaceExtractor(args) {
++  function error(msg) {
++    throw new Error("ndarray-extract-contour: " + msg)
+   }
+-
+-  function readtoken() {
+-    if(/[^\d\w_]/.test(c)) {
+-      var contentstr = content.join('')
+-      if(allLiterals.indexOf(contentstr) > -1) {
+-        mode = KEYWORD
+-      } else if(allBuiltins.indexOf(contentstr) > -1) {
+-        mode = BUILTIN
+-      } else {
+-        mode = IDENT
+-      }
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
++  if(typeof args !== "object") {
++    error("Must specify arguments")
++  }
++  var order = args.order
++  if(!Array.isArray(order)) {
++    error("Must specify order")
++  }
++  var arrays = args.arrayArguments||1
++  if(arrays < 1) {
++    error("Must have at least one array argument")
++  }
++  var scalars = args.scalarArguments||0
++  if(scalars < 0) {
++    error("Scalar arg count must be > 0")
++  }
++  if(typeof args.vertex !== "function") {
++    error("Must specify vertex creation function")
++  }
++  if(typeof args.cell !== "function") {
++    error("Must specify cell creation function")
++  }
++  if(typeof args.phase !== "function") {
++    error("Must specify phase function")
++  }
++  var getters = args.getters || []
++  var typesig = new Array(arrays)
++  for(var i=0; i<arrays; ++i) {
++    if(getters.indexOf(i) >= 0) {
++      typesig[i] = true
++    } else {
++      typesig[i] = false
+     }
+-    content.push(c)
+-    last = c
+-    return i + 1
+   }
++  return compileSurfaceProcedure(
++    args.vertex,
++    args.cell,
++    args.phase,
++    scalars,
++    order,
++    typesig)
+ }
++},{"typedarray-pool":246}],181:[function(require,module,exports){
++"use strict"
+ 
+-},{"./lib/builtins":196,"./lib/builtins-300es":195,"./lib/literals":198,"./lib/literals-300es":197,"./lib/operators":199}],195:[function(require,module,exports){
+-// 300es builtins/reserved words that were previously valid in v100
+-var v100 = require('./builtins')
+ 
+-// The texture2D|Cube functions have been removed
+-// And the gl_ features are updated
+-v100 = v100.slice().filter(function (b) {
+-  return !/^(gl\_|texture)/.test(b)
+-})
+ 
+-module.exports = v100.concat([
+-  // the updated gl_ constants
+-    'gl_VertexID'
+-  , 'gl_InstanceID'
+-  , 'gl_Position'
+-  , 'gl_PointSize'
+-  , 'gl_FragCoord'
+-  , 'gl_FrontFacing'
+-  , 'gl_FragDepth'
+-  , 'gl_PointCoord'
+-  , 'gl_MaxVertexAttribs'
+-  , 'gl_MaxVertexUniformVectors'
+-  , 'gl_MaxVertexOutputVectors'
+-  , 'gl_MaxFragmentInputVectors'
+-  , 'gl_MaxVertexTextureImageUnits'
+-  , 'gl_MaxCombinedTextureImageUnits'
+-  , 'gl_MaxTextureImageUnits'
+-  , 'gl_MaxFragmentUniformVectors'
+-  , 'gl_MaxDrawBuffers'
+-  , 'gl_MinProgramTexelOffset'
+-  , 'gl_MaxProgramTexelOffset'
+-  , 'gl_DepthRangeParameters'
+-  , 'gl_DepthRange'
++var fill = require('cwise/lib/wrapper')({"args":["index","array","scalar"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{_inline_7_arg1_=_inline_7_arg2_.apply(void 0,_inline_7_arg0_)}","args":[{"name":"_inline_7_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_7_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_7_arg2_","lvalue":false,"rvalue":true,"count":1}],"thisVars":[],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
+ 
+-  // other builtins
+-  , 'trunc'
+-  , 'round'
+-  , 'roundEven'
+-  , 'isnan'
+-  , 'isinf'
+-  , 'floatBitsToInt'
+-  , 'floatBitsToUint'
+-  , 'intBitsToFloat'
+-  , 'uintBitsToFloat'
+-  , 'packSnorm2x16'
+-  , 'unpackSnorm2x16'
+-  , 'packUnorm2x16'
+-  , 'unpackUnorm2x16'
+-  , 'packHalf2x16'
+-  , 'unpackHalf2x16'
+-  , 'outerProduct'
+-  , 'transpose'
+-  , 'determinant'
+-  , 'inverse'
+-  , 'texture'
+-  , 'textureSize'
+-  , 'textureProj'
+-  , 'textureLod'
+-  , 'textureOffset'
+-  , 'texelFetch'
+-  , 'texelFetchOffset'
+-  , 'textureProjOffset'
+-  , 'textureLodOffset'
+-  , 'textureProjLod'
+-  , 'textureProjLodOffset'
+-  , 'textureGrad'
+-  , 'textureGradOffset'
+-  , 'textureProjGrad'
+-  , 'textureProjGradOffset'
+-])
++module.exports = function(array, f) {
++  fill(array, f)
++  return array
++}
++
++},{"cwise/lib/wrapper":73}],182:[function(require,module,exports){
++'use strict'
++
++module.exports      = gradient
++
++var dup             = require('dup')
++var cwiseCompiler   = require('cwise-compiler')
++
++var TEMPLATE_CACHE  = {}
++var GRADIENT_CACHE  = {}
++
++var EmptyProc = {
++  body: "",
++  args: [],
++  thisVars: [],
++  localVars: []
++}
++
++var centralDiff = cwiseCompiler({
++  args: [ 'array', 'array', 'array' ],
++  pre: EmptyProc,
++  post: EmptyProc,
++  body: {
++    args: [ {
++      name: 'out', 
++      lvalue: true,
++      rvalue: false,
++      count: 1
++    }, {
++      name: 'left', 
++      lvalue: false,
++      rvalue: true,
++      count: 1
++    }, {
++      name: 'right', 
++      lvalue: false,
++      rvalue: true,
++      count: 1
++    }],
++    body: "out=0.5*(left-right)",
++    thisVars: [],
++    localVars: []
++  },
++  funcName: 'cdiff'
++})
++
++var zeroOut = cwiseCompiler({
++  args: [ 'array' ],
++  pre: EmptyProc,
++  post: EmptyProc,
++  body: {
++    args: [ {
++      name: 'out', 
++      lvalue: true,
++      rvalue: false,
++      count: 1
++    }],
++    body: "out=0",
++    thisVars: [],
++    localVars: []
++  },
++  funcName: 'zero'
++})
+ 
+-},{"./builtins":196}],196:[function(require,module,exports){
+-module.exports = [
+-  // Keep this list sorted
+-  'abs'
+-  , 'acos'
+-  , 'all'
+-  , 'any'
+-  , 'asin'
+-  , 'atan'
+-  , 'ceil'
+-  , 'clamp'
+-  , 'cos'
+-  , 'cross'
+-  , 'dFdx'
+-  , 'dFdy'
+-  , 'degrees'
+-  , 'distance'
+-  , 'dot'
+-  , 'equal'
+-  , 'exp'
+-  , 'exp2'
+-  , 'faceforward'
+-  , 'floor'
+-  , 'fract'
+-  , 'gl_BackColor'
+-  , 'gl_BackLightModelProduct'
+-  , 'gl_BackLightProduct'
+-  , 'gl_BackMaterial'
+-  , 'gl_BackSecondaryColor'
+-  , 'gl_ClipPlane'
+-  , 'gl_ClipVertex'
+-  , 'gl_Color'
+-  , 'gl_DepthRange'
+-  , 'gl_DepthRangeParameters'
+-  , 'gl_EyePlaneQ'
+-  , 'gl_EyePlaneR'
+-  , 'gl_EyePlaneS'
+-  , 'gl_EyePlaneT'
+-  , 'gl_Fog'
+-  , 'gl_FogCoord'
+-  , 'gl_FogFragCoord'
+-  , 'gl_FogParameters'
+-  , 'gl_FragColor'
+-  , 'gl_FragCoord'
+-  , 'gl_FragData'
+-  , 'gl_FragDepth'
+-  , 'gl_FragDepthEXT'
+-  , 'gl_FrontColor'
+-  , 'gl_FrontFacing'
+-  , 'gl_FrontLightModelProduct'
+-  , 'gl_FrontLightProduct'
+-  , 'gl_FrontMaterial'
+-  , 'gl_FrontSecondaryColor'
+-  , 'gl_LightModel'
+-  , 'gl_LightModelParameters'
+-  , 'gl_LightModelProducts'
+-  , 'gl_LightProducts'
+-  , 'gl_LightSource'
+-  , 'gl_LightSourceParameters'
+-  , 'gl_MaterialParameters'
+-  , 'gl_MaxClipPlanes'
+-  , 'gl_MaxCombinedTextureImageUnits'
+-  , 'gl_MaxDrawBuffers'
+-  , 'gl_MaxFragmentUniformComponents'
+-  , 'gl_MaxLights'
+-  , 'gl_MaxTextureCoords'
+-  , 'gl_MaxTextureImageUnits'
+-  , 'gl_MaxTextureUnits'
+-  , 'gl_MaxVaryingFloats'
+-  , 'gl_MaxVertexAttribs'
+-  , 'gl_MaxVertexTextureImageUnits'
+-  , 'gl_MaxVertexUniformComponents'
+-  , 'gl_ModelViewMatrix'
+-  , 'gl_ModelViewMatrixInverse'
+-  , 'gl_ModelViewMatrixInverseTranspose'
+-  , 'gl_ModelViewMatrixTranspose'
+-  , 'gl_ModelViewProjectionMatrix'
+-  , 'gl_ModelViewProjectionMatrixInverse'
+-  , 'gl_ModelViewProjectionMatrixInverseTranspose'
+-  , 'gl_ModelViewProjectionMatrixTranspose'
+-  , 'gl_MultiTexCoord0'
+-  , 'gl_MultiTexCoord1'
+-  , 'gl_MultiTexCoord2'
+-  , 'gl_MultiTexCoord3'
+-  , 'gl_MultiTexCoord4'
+-  , 'gl_MultiTexCoord5'
+-  , 'gl_MultiTexCoord6'
+-  , 'gl_MultiTexCoord7'
+-  , 'gl_Normal'
+-  , 'gl_NormalMatrix'
+-  , 'gl_NormalScale'
+-  , 'gl_ObjectPlaneQ'
+-  , 'gl_ObjectPlaneR'
+-  , 'gl_ObjectPlaneS'
+-  , 'gl_ObjectPlaneT'
+-  , 'gl_Point'
+-  , 'gl_PointCoord'
+-  , 'gl_PointParameters'
+-  , 'gl_PointSize'
+-  , 'gl_Position'
+-  , 'gl_ProjectionMatrix'
+-  , 'gl_ProjectionMatrixInverse'
+-  , 'gl_ProjectionMatrixInverseTranspose'
+-  , 'gl_ProjectionMatrixTranspose'
+-  , 'gl_SecondaryColor'
+-  , 'gl_TexCoord'
+-  , 'gl_TextureEnvColor'
+-  , 'gl_TextureMatrix'
+-  , 'gl_TextureMatrixInverse'
+-  , 'gl_TextureMatrixInverseTranspose'
+-  , 'gl_TextureMatrixTranspose'
+-  , 'gl_Vertex'
+-  , 'greaterThan'
+-  , 'greaterThanEqual'
+-  , 'inversesqrt'
+-  , 'length'
+-  , 'lessThan'
+-  , 'lessThanEqual'
+-  , 'log'
+-  , 'log2'
+-  , 'matrixCompMult'
+-  , 'max'
+-  , 'min'
+-  , 'mix'
+-  , 'mod'
+-  , 'normalize'
+-  , 'not'
+-  , 'notEqual'
+-  , 'pow'
+-  , 'radians'
+-  , 'reflect'
+-  , 'refract'
+-  , 'sign'
+-  , 'sin'
+-  , 'smoothstep'
+-  , 'sqrt'
+-  , 'step'
+-  , 'tan'
+-  , 'texture2D'
+-  , 'texture2DLod'
+-  , 'texture2DProj'
+-  , 'texture2DProjLod'
+-  , 'textureCube'
+-  , 'textureCubeLod'
+-  , 'texture2DLodEXT'
+-  , 'texture2DProjLodEXT'
+-  , 'textureCubeLodEXT'
+-  , 'texture2DGradEXT'
+-  , 'texture2DProjGradEXT'
+-  , 'textureCubeGradEXT'
+-]
++function generateTemplate(d) {
++  if(d in TEMPLATE_CACHE) {
++    return TEMPLATE_CACHE[d]
++  }
++  var code = []
++  for(var i=0; i<d; ++i) {
++    code.push('out', i, 's=0.5*(inp', i, 'l-inp', i, 'r);')
++  }
++  var args = [ 'array' ]
++  var names = ['junk']
++  for(var i=0; i<d; ++i) {
++    args.push('array')
++    names.push('out' + i + 's')
++    var o = dup(d)
++    o[i] = -1
++    args.push({
++      array: 0,
++      offset: o.slice()
++    })
++    o[i] = 1
++    args.push({
++      array: 0,
++      offset: o.slice()
++    })
++    names.push('inp' + i + 'l', 'inp' + i + 'r')
++  }
++  return TEMPLATE_CACHE[d] = cwiseCompiler({
++    args: args,
++    pre:  EmptyProc,
++    post: EmptyProc,
++    body: {
++      body: code.join(''),
++      args: names.map(function(n) {
++        return {
++          name: n,
++          lvalue: n.indexOf('out') === 0,
++          rvalue: n.indexOf('inp') === 0,
++          count: (n!=='junk')|0
++        }
++      }),
++      thisVars: [],
++      localVars: []
++    },
++    funcName: 'fdTemplate' + d
++  })
++}
+ 
+-},{}],197:[function(require,module,exports){
+-var v100 = require('./literals')
++function generateGradient(boundaryConditions) {
++  var token = boundaryConditions.join()
++  var proc = GRADIENT_CACHE[token]
++  if(proc) {
++    return proc
++  }
+ 
+-module.exports = v100.slice().concat([
+-   'layout'
+-  , 'centroid'
+-  , 'smooth'
+-  , 'case'
+-  , 'mat2x2'
+-  , 'mat2x3'
+-  , 'mat2x4'
+-  , 'mat3x2'
+-  , 'mat3x3'
+-  , 'mat3x4'
+-  , 'mat4x2'
+-  , 'mat4x3'
+-  , 'mat4x4'
+-  , 'uint'
+-  , 'uvec2'
+-  , 'uvec3'
+-  , 'uvec4'
+-  , 'samplerCubeShadow'
+-  , 'sampler2DArray'
+-  , 'sampler2DArrayShadow'
+-  , 'isampler2D'
+-  , 'isampler3D'
+-  , 'isamplerCube'
+-  , 'isampler2DArray'
+-  , 'usampler2D'
+-  , 'usampler3D'
+-  , 'usamplerCube'
+-  , 'usampler2DArray'
+-  , 'coherent'
+-  , 'restrict'
+-  , 'readonly'
+-  , 'writeonly'
+-  , 'resource'
+-  , 'atomic_uint'
+-  , 'noperspective'
+-  , 'patch'
+-  , 'sample'
+-  , 'subroutine'
+-  , 'common'
+-  , 'partition'
+-  , 'active'
+-  , 'filter'
+-  , 'image1D'
+-  , 'image2D'
+-  , 'image3D'
+-  , 'imageCube'
+-  , 'iimage1D'
+-  , 'iimage2D'
+-  , 'iimage3D'
+-  , 'iimageCube'
+-  , 'uimage1D'
+-  , 'uimage2D'
+-  , 'uimage3D'
+-  , 'uimageCube'
+-  , 'image1DArray'
+-  , 'image2DArray'
+-  , 'iimage1DArray'
+-  , 'iimage2DArray'
+-  , 'uimage1DArray'
+-  , 'uimage2DArray'
+-  , 'image1DShadow'
+-  , 'image2DShadow'
+-  , 'image1DArrayShadow'
+-  , 'image2DArrayShadow'
+-  , 'imageBuffer'
+-  , 'iimageBuffer'
+-  , 'uimageBuffer'
+-  , 'sampler1DArray'
+-  , 'sampler1DArrayShadow'
+-  , 'isampler1D'
+-  , 'isampler1DArray'
+-  , 'usampler1D'
+-  , 'usampler1DArray'
+-  , 'isampler2DRect'
+-  , 'usampler2DRect'
+-  , 'samplerBuffer'
+-  , 'isamplerBuffer'
+-  , 'usamplerBuffer'
+-  , 'sampler2DMS'
+-  , 'isampler2DMS'
+-  , 'usampler2DMS'
+-  , 'sampler2DMSArray'
+-  , 'isampler2DMSArray'
+-  , 'usampler2DMSArray'
+-])
++  var d = boundaryConditions.length
++  var code = ['function gradient(dst,src){var s=src.shape.slice();' ]
++  
++  function handleBoundary(facet) {
++    var cod = d - facet.length
+ 
+-},{"./literals":198}],198:[function(require,module,exports){
+-module.exports = [
+-  // current
+-    'precision'
+-  , 'highp'
+-  , 'mediump'
+-  , 'lowp'
+-  , 'attribute'
+-  , 'const'
+-  , 'uniform'
+-  , 'varying'
+-  , 'break'
+-  , 'continue'
+-  , 'do'
+-  , 'for'
+-  , 'while'
+-  , 'if'
+-  , 'else'
+-  , 'in'
+-  , 'out'
+-  , 'inout'
+-  , 'float'
+-  , 'int'
+-  , 'void'
+-  , 'bool'
+-  , 'true'
+-  , 'false'
+-  , 'discard'
+-  , 'return'
+-  , 'mat2'
+-  , 'mat3'
+-  , 'mat4'
+-  , 'vec2'
+-  , 'vec3'
+-  , 'vec4'
+-  , 'ivec2'
+-  , 'ivec3'
+-  , 'ivec4'
+-  , 'bvec2'
+-  , 'bvec3'
+-  , 'bvec4'
+-  , 'sampler1D'
+-  , 'sampler2D'
+-  , 'sampler3D'
+-  , 'samplerCube'
+-  , 'sampler1DShadow'
+-  , 'sampler2DShadow'
+-  , 'struct'
++    var loStr = []
++    var hiStr = []
++    var pickStr = []
++    for(var i=0; i<d; ++i) {
++      if(facet.indexOf(i+1) >= 0) {
++        pickStr.push('0')
++      } else if(facet.indexOf(-(i+1)) >= 0) {
++        pickStr.push('s['+i+']-1')
++      } else {
++        pickStr.push('-1')
++        loStr.push('1')
++        hiStr.push('s['+i+']-2')
++      }
++    }
++    var boundStr = '.lo(' + loStr.join() + ').hi(' + hiStr.join() + ')'
++    if(loStr.length === 0) {
++      boundStr = ''
++    }
++        
++    if(cod > 0) {
++      code.push('if(1') 
++      for(var i=0; i<d; ++i) {
++        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
++          continue
++        }
++        code.push('&&s[', i, ']>2')
++      }
++      code.push('){grad', cod, '(src.pick(', pickStr.join(), ')', boundStr)
++      for(var i=0; i<d; ++i) {
++        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
++          continue
++        }
++        code.push(',dst.pick(', pickStr.join(), ',', i, ')', boundStr)
++      }
++      code.push(');')
++    }
+ 
+-  // future
+-  , 'asm'
+-  , 'class'
+-  , 'union'
+-  , 'enum'
+-  , 'typedef'
+-  , 'template'
+-  , 'this'
+-  , 'packed'
+-  , 'goto'
+-  , 'switch'
+-  , 'default'
+-  , 'inline'
+-  , 'noinline'
+-  , 'volatile'
+-  , 'public'
+-  , 'static'
+-  , 'extern'
+-  , 'external'
+-  , 'interface'
+-  , 'long'
+-  , 'short'
+-  , 'double'
+-  , 'half'
+-  , 'fixed'
+-  , 'unsigned'
+-  , 'input'
+-  , 'output'
+-  , 'hvec2'
+-  , 'hvec3'
+-  , 'hvec4'
+-  , 'dvec2'
+-  , 'dvec3'
+-  , 'dvec4'
+-  , 'fvec2'
+-  , 'fvec3'
+-  , 'fvec4'
+-  , 'sampler2DRect'
+-  , 'sampler3DRect'
+-  , 'sampler2DRectShadow'
+-  , 'sizeof'
+-  , 'cast'
+-  , 'namespace'
+-  , 'using'
+-]
++    for(var i=0; i<facet.length; ++i) {
++      var bnd = Math.abs(facet[i])-1
++      var outStr = 'dst.pick(' + pickStr.join() + ',' + bnd + ')' + boundStr
++      switch(boundaryConditions[bnd]) {
+ 
+-},{}],199:[function(require,module,exports){
+-module.exports = [
+-    '<<='
+-  , '>>='
+-  , '++'
+-  , '--'
+-  , '<<'
+-  , '>>'
+-  , '<='
+-  , '>='
+-  , '=='
+-  , '!='
+-  , '&&'
+-  , '||'
+-  , '+='
+-  , '-='
+-  , '*='
+-  , '/='
+-  , '%='
+-  , '&='
+-  , '^^'
+-  , '^='
+-  , '|='
+-  , '('
+-  , ')'
+-  , '['
+-  , ']'
+-  , '.'
+-  , '!'
+-  , '~'
+-  , '*'
+-  , '/'
+-  , '%'
+-  , '+'
+-  , '-'
+-  , '<'
+-  , '>'
+-  , '&'
+-  , '^'
+-  , '|'
+-  , '?'
+-  , ':'
+-  , '='
+-  , ','
+-  , ';'
+-  , '{'
+-  , '}'
+-]
++        case 'clamp':
++          var cPickStr = pickStr.slice()
++          var dPickStr = pickStr.slice()
++          if(facet[i] < 0) {
++            cPickStr[bnd] = 's[' + bnd + ']-2'
++          } else {
++            dPickStr[bnd] = '1'
++          }
++          if(cod === 0) {
++            code.push('if(s[', bnd, ']>1){dst.set(',
++              pickStr.join(), ',', bnd, ',0.5*(src.get(',
++                cPickStr.join(), ')-src.get(',
++                dPickStr.join(), ')))}else{dst.set(',
++              pickStr.join(), ',', bnd, ',0)};')
++          } else {
++            code.push('if(s[', bnd, ']>1){diff(', outStr, 
++                ',src.pick(', cPickStr.join(), ')', boundStr, 
++                ',src.pick(', dPickStr.join(), ')', boundStr, 
++                ');}else{zero(', outStr, ');};')
++          }
++        break
++
++        case 'mirror':
++          if(cod === 0) {
++            code.push('dst.set(', pickStr.join(), ',', bnd, ',0);')
++          } else {
++            code.push('zero(', outStr, ');')
++          }
++        break
+ 
+-},{}],200:[function(require,module,exports){
+-var tokenize = require('./index')
++        case 'wrap':
++          var aPickStr = pickStr.slice()
++          var bPickStr = pickStr.slice()
++          if(facet[i] < 0) {
++            aPickStr[bnd] = 's[' + bnd + ']-2'
++            bPickStr[bnd] = '0'
++            
++          } else {
++            aPickStr[bnd] = 's[' + bnd + ']-1'
++            bPickStr[bnd] = '1'
++          }
++          if(cod === 0) {
++            code.push('if(s[', bnd, ']>2){dst.set(',
++              pickStr.join(), ',', bnd, ',0.5*(src.get(',
++                aPickStr.join(), ')-src.get(',
++                bPickStr.join(), ')))}else{dst.set(',
++              pickStr.join(), ',', bnd, ',0)};')
++          } else {
++            code.push('if(s[', bnd, ']>2){diff(', outStr, 
++                ',src.pick(', aPickStr.join(), ')', boundStr, 
++                ',src.pick(', bPickStr.join(), ')', boundStr, 
++                ');}else{zero(', outStr, ');};')
++          }
++        break
+ 
+-module.exports = tokenizeString
++        default:
++          throw new Error('ndarray-gradient: Invalid boundary condition')
++      }
++    }
+ 
+-function tokenizeString(str, opt) {
+-  var generator = tokenize(opt)
+-  var tokens = []
++    if(cod > 0) {
++      code.push('};')
++    }
++  }
+ 
+-  tokens = tokens.concat(generator(str))
+-  tokens = tokens.concat(generator(null))
++  //Enumerate ridges, facets, etc. of hypercube
++  for(var i=0; i<(1<<d); ++i) {
++    var faces = []
++    for(var j=0; j<d; ++j) {
++      if(i & (1<<j)) {
++        faces.push(j+1)
++      }
++    }
++    for(var k=0; k<(1<<faces.length); ++k) {
++      var sfaces = faces.slice()
++      for(var j=0; j<faces.length; ++j) {
++        if(k & (1<<j)) {
++          sfaces[j] = -sfaces[j]
++        }
++      }
++      handleBoundary(sfaces)
++    }
++  }
+ 
+-  return tokens
++  code.push('return dst;};return gradient')
++
++  //Compile and link routine, save cached procedure
++  var linkNames = [ 'diff', 'zero' ]
++  var linkArgs  = [ centralDiff, zeroOut ]
++  for(var i=1; i<=d; ++i) {
++    linkNames.push('grad' + i)
++    linkArgs.push(generateTemplate(i))
++  }
++  linkNames.push(code.join(''))
++
++  var link = Function.apply(void 0, linkNames)
++  var proc = link.apply(void 0, linkArgs)
++  TEMPLATE_CACHE[token] = proc
++  return proc
+ }
+ 
+-},{"./index":194}],201:[function(require,module,exports){
+-"use strict"
++function gradient(out, inp, bc) {
++  if(Array.isArray(bc)) {
++    if(bc.length !== inp.dimension) {
++      throw new Error('ndarray-gradient: invalid boundary conditions')
++    }
++  } else if(typeof bc === 'string') {
++    bc = dup(inp.dimension, bc)
++  } else {
++    bc = dup(inp.dimension, 'clamp')
++  }
++  if(out.dimension !== inp.dimension + 1) {
++    throw new Error('ndarray-gradient: output dimension must be +1 input dimension')
++  }
++  if(out.shape[inp.dimension] !== inp.dimension) {
++    throw new Error('ndarray-gradient: output shape must match input shape')
++  }
++  for(var i=0; i<inp.dimension; ++i) {
++    if(out.shape[i] !== inp.shape[i]) {
++      throw new Error('ndarray-gradient: shape mismatch')
++    }
++  }
++  if(inp.size === 0) {
++    return out
++  }
++  if(inp.dimension <= 0) {
++    out.set(0)
++    return out
++  }
++  var cached = generateGradient(bc)
++  return cached(out, inp)
++}
++},{"cwise-compiler":70,"dup":77}],183:[function(require,module,exports){
++'use strict'
+ 
+-//High level idea:
+-// 1. Use Clarkson's incremental construction to find convex hull
+-// 2. Point location in triangulation by jump and walk
++var warp = require('ndarray-warp')
++var invert = require('gl-matrix-invert')
+ 
+-module.exports = incrementalConvexHull
++module.exports = applyHomography
+ 
+-var orient = require("robust-orientation")
+-var compareCell = require("simplicial-complex").compareCells
++function applyHomography(dest, src, Xi) {
++  var n = src.dimension
++  var X = invert([], Xi)
++  warp(dest, src, function(out_c, inp_c) {
++    for(var i=0; i<n; ++i) {
++      out_c[i] = X[(n+1)*n + i]
++      for(var j=0; j<n; ++j) {
++        out_c[i] += X[(n+1)*j+i] * inp_c[j]
++      }
++    }
++    var w = X[(n+1)*(n+1)-1]
++    for(var j=0; j<n; ++j) {
++      w += X[(n+1)*j+n] * inp_c[j]
++    }
++    var wr = 1.0 / w
++    for(var i=0; i<n; ++i) {
++      out_c[i] *= wr
++    }
++    return out_c
++  })
++  return dest
++}
++},{"gl-matrix-invert":122,"ndarray-warp":190}],184:[function(require,module,exports){
++"use strict"
+ 
+-function compareInt(a, b) {
+-  return a - b
++function interp1d(arr, x) {
++  var ix = Math.floor(x)
++    , fx = x - ix
++    , s0 = 0 <= ix   && ix   < arr.shape[0]
++    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
++    , w0 = s0 ? +arr.get(ix)   : 0.0
++    , w1 = s1 ? +arr.get(ix+1) : 0.0
++  return (1.0-fx)*w0 + fx*w1
+ }
+ 
+-function Simplex(vertices, adjacent, boundary) {
+-  this.vertices = vertices
+-  this.adjacent = adjacent
+-  this.boundary = boundary
+-  this.lastVisited = -1
++function interp2d(arr, x, y) {
++  var ix = Math.floor(x)
++    , fx = x - ix
++    , s0 = 0 <= ix   && ix   < arr.shape[0]
++    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
++    , iy = Math.floor(y)
++    , fy = y - iy
++    , t0 = 0 <= iy   && iy   < arr.shape[1]
++    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
++    , w00 = s0&&t0 ? arr.get(ix  ,iy  ) : 0.0
++    , w01 = s0&&t1 ? arr.get(ix  ,iy+1) : 0.0
++    , w10 = s1&&t0 ? arr.get(ix+1,iy  ) : 0.0
++    , w11 = s1&&t1 ? arr.get(ix+1,iy+1) : 0.0
++  return (1.0-fy) * ((1.0-fx)*w00 + fx*w10) + fy * ((1.0-fx)*w01 + fx*w11)
+ }
+ 
+-Simplex.prototype.flip = function() {
+-  var t = this.vertices[0]
+-  this.vertices[0] = this.vertices[1]
+-  this.vertices[1] = t
+-  var u = this.adjacent[0]
+-  this.adjacent[0] = this.adjacent[1]
+-  this.adjacent[1] = u
++function interp3d(arr, x, y, z) {
++  var ix = Math.floor(x)
++    , fx = x - ix
++    , s0 = 0 <= ix   && ix   < arr.shape[0]
++    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
++    , iy = Math.floor(y)
++    , fy = y - iy
++    , t0 = 0 <= iy   && iy   < arr.shape[1]
++    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
++    , iz = Math.floor(z)
++    , fz = z - iz
++    , u0 = 0 <= iz   && iz   < arr.shape[2]
++    , u1 = 0 <= iz+1 && iz+1 < arr.shape[2]
++    , w000 = s0&&t0&&u0 ? arr.get(ix,iy,iz)       : 0.0
++    , w010 = s0&&t1&&u0 ? arr.get(ix,iy+1,iz)     : 0.0
++    , w100 = s1&&t0&&u0 ? arr.get(ix+1,iy,iz)     : 0.0
++    , w110 = s1&&t1&&u0 ? arr.get(ix+1,iy+1,iz)   : 0.0
++    , w001 = s0&&t0&&u1 ? arr.get(ix,iy,iz+1)     : 0.0
++    , w011 = s0&&t1&&u1 ? arr.get(ix,iy+1,iz+1)   : 0.0
++    , w101 = s1&&t0&&u1 ? arr.get(ix+1,iy,iz+1)   : 0.0
++    , w111 = s1&&t1&&u1 ? arr.get(ix+1,iy+1,iz+1) : 0.0
++  return (1.0-fz) * ((1.0-fy) * ((1.0-fx)*w000 + fx*w100) + fy * ((1.0-fx)*w010 + fx*w110)) + fz * ((1.0-fy) * ((1.0-fx)*w001 + fx*w101) + fy * ((1.0-fx)*w011 + fx*w111))
+ }
+ 
+-function GlueFacet(vertices, cell, index) {
+-  this.vertices = vertices
+-  this.cell = cell
+-  this.index = index
++function interpNd(arr) {
++  var d = arr.shape.length|0
++    , ix = new Array(d)
++    , fx = new Array(d)
++    , s0 = new Array(d)
++    , s1 = new Array(d)
++    , i, t
++  for(i=0; i<d; ++i) {
++    t = +arguments[i+1]
++    ix[i] = Math.floor(t)
++    fx[i] = t - ix[i]
++    s0[i] = (0 <= ix[i]   && ix[i]   < arr.shape[i])
++    s1[i] = (0 <= ix[i]+1 && ix[i]+1 < arr.shape[i])
++  }
++  var r = 0.0, j, w, idx
++i_loop:
++  for(i=0; i<(1<<d); ++i) {
++    w = 1.0
++    idx = arr.offset
++    for(j=0; j<d; ++j) {
++      if(i & (1<<j)) {
++        if(!s1[j]) {
++          continue i_loop
++        }
++        w *= fx[j]
++        idx += arr.stride[j] * (ix[j] + 1)
++      } else {
++        if(!s0[j]) {
++          continue i_loop
++        }
++        w *= 1.0 - fx[j]
++        idx += arr.stride[j] * ix[j]
++      }
++    }
++    r += w * arr.data[idx]
++  }
++  return r
+ }
+ 
+-function compareGlue(a, b) {
+-  return compareCell(a.vertices, b.vertices)
++function interpolate(arr, x, y, z) {
++  switch(arr.shape.length) {
++    case 0:
++      return 0.0
++    case 1:
++      return interp1d(arr, x)
++    case 2:
++      return interp2d(arr, x, y)
++    case 3:
++      return interp3d(arr, x, y, z)
++    default:
++      return interpNd.apply(undefined, arguments)
++  }
++}
++module.exports = interpolate
++module.exports.d1 = interp1d
++module.exports.d2 = interp2d
++module.exports.d3 = interp3d
++
++},{}],185:[function(require,module,exports){
++"use strict"
++
++var compile = require("cwise-compiler")
++
++var EmptyProc = {
++  body: "",
++  args: [],
++  thisVars: [],
++  localVars: []
+ }
+ 
+-function bakeOrient(d) {
+-  var code = ["function orient(){var tuple=this.tuple;return test("]
+-  for(var i=0; i<=d; ++i) {
+-    if(i > 0) {
+-      code.push(",")
++function fixup(x) {
++  if(!x) {
++    return EmptyProc
++  }
++  for(var i=0; i<x.args.length; ++i) {
++    var a = x.args[i]
++    if(i === 0) {
++      x.args[i] = {name: a, lvalue:true, rvalue: !!x.rvalue, count:x.count||1 }
++    } else {
++      x.args[i] = {name: a, lvalue:false, rvalue:true, count: 1}
+     }
+-    code.push("tuple[", i, "]")
+   }
+-  code.push(")}return orient")
+-  var proc = new Function("test", code.join(""))
+-  var test = orient[d+1]
+-  if(!test) {
+-    test = orient
++  if(!x.thisVars) {
++    x.thisVars = []
+   }
+-  return proc(test)
++  if(!x.localVars) {
++    x.localVars = []
++  }
++  return x
+ }
+ 
+-var BAKED = []
+-
+-function Triangulation(dimension, vertices, simplices) {
+-  this.dimension = dimension
+-  this.vertices = vertices
+-  this.simplices = simplices
+-  this.interior = simplices.filter(function(c) {
+-    return !c.boundary
++function pcompile(user_args) {
++  return compile({
++    args:     user_args.args,
++    pre:      fixup(user_args.pre),
++    body:     fixup(user_args.body),
++    post:     fixup(user_args.proc),
++    funcName: user_args.funcName
+   })
++}
+ 
+-  this.tuple = new Array(dimension+1)
+-  for(var i=0; i<=dimension; ++i) {
+-    this.tuple[i] = this.vertices[i]
++function makeOp(user_args) {
++  var args = []
++  for(var i=0; i<user_args.args.length; ++i) {
++    args.push("a"+i)
+   }
++  var wrapper = new Function("P", [
++    "return function ", user_args.funcName, "_ndarrayops(", args.join(","), ") {P(", args.join(","), ");return a0}"
++  ].join(""))
++  return wrapper(pcompile(user_args))
++}
+ 
+-  var o = BAKED[dimension]
+-  if(!o) {
+-    o = BAKED[dimension] = bakeOrient(dimension)
++var assign_ops = {
++  add:  "+",
++  sub:  "-",
++  mul:  "*",
++  div:  "/",
++  mod:  "%",
++  band: "&",
++  bor:  "|",
++  bxor: "^",
++  lshift: "<<",
++  rshift: ">>",
++  rrshift: ">>>"
++}
++;(function(){
++  for(var id in assign_ops) {
++    var op = assign_ops[id]
++    exports[id] = makeOp({
++      args: ["array","array","array"],
++      body: {args:["a","b","c"],
++             body: "a=b"+op+"c"},
++      funcName: id
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array","array"],
++      body: {args:["a","b"],
++             body:"a"+op+"=b"},
++      rvalue: true,
++      funcName: id+"eq"
++    })
++    exports[id+"s"] = makeOp({
++      args: ["array", "array", "scalar"],
++      body: {args:["a","b","s"],
++             body:"a=b"+op+"s"},
++      funcName: id+"s"
++    })
++    exports[id+"seq"] = makeOp({
++      args: ["array","scalar"],
++      body: {args:["a","s"],
++             body:"a"+op+"=s"},
++      rvalue: true,
++      funcName: id+"seq"
++    })
+   }
+-  this.orient = o
++})();
++
++var unary_ops = {
++  not: "!",
++  bnot: "~",
++  neg: "-",
++  recip: "1.0/"
+ }
++;(function(){
++  for(var id in unary_ops) {
++    var op = unary_ops[id]
++    exports[id] = makeOp({
++      args: ["array", "array"],
++      body: {args:["a","b"],
++             body:"a="+op+"b"},
++      funcName: id
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array"],
++      body: {args:["a"],
++             body:"a="+op+"a"},
++      rvalue: true,
++      count: 2,
++      funcName: id+"eq"
++    })
++  }
++})();
+ 
+-var proto = Triangulation.prototype
++var binary_ops = {
++  and: "&&",
++  or: "||",
++  eq: "===",
++  neq: "!==",
++  lt: "<",
++  gt: ">",
++  leq: "<=",
++  geq: ">="
++}
++;(function() {
++  for(var id in binary_ops) {
++    var op = binary_ops[id]
++    exports[id] = makeOp({
++      args: ["array","array","array"],
++      body: {args:["a", "b", "c"],
++             body:"a=b"+op+"c"},
++      funcName: id
++    })
++    exports[id+"s"] = makeOp({
++      args: ["array","array","scalar"],
++      body: {args:["a", "b", "s"],
++             body:"a=b"+op+"s"},
++      funcName: id+"s"
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array", "array"],
++      body: {args:["a", "b"],
++             body:"a=a"+op+"b"},
++      rvalue:true,
++      count:2,
++      funcName: id+"eq"
++    })
++    exports[id+"seq"] = makeOp({
++      args: ["array", "scalar"],
++      body: {args:["a","s"],
++             body:"a=a"+op+"s"},
++      rvalue:true,
++      count:2,
++      funcName: id+"seq"
++    })
++  }
++})();
+ 
+-//Degenerate situation where we are on boundary, but coplanar to face
+-proto.handleBoundaryDegeneracy = function(cell, point) {
+-  var d = this.dimension
+-  var n = this.vertices.length - 1
+-  var tuple = this.tuple
+-  var verts = this.vertices
++var math_unary = [
++  "abs",
++  "acos",
++  "asin",
++  "atan",
++  "ceil",
++  "cos",
++  "exp",
++  "floor",
++  "log",
++  "round",
++  "sin",
++  "sqrt",
++  "tan"
++]
++;(function() {
++  for(var i=0; i<math_unary.length; ++i) {
++    var f = math_unary[i]
++    exports[f] = makeOp({
++                    args: ["array", "array"],
++                    pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                    body: {args:["a","b"], body:"a=this_f(b)", thisVars:["this_f"]},
++                    funcName: f
++                  })
++    exports[f+"eq"] = makeOp({
++                      args: ["array"],
++                      pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                      body: {args: ["a"], body:"a=this_f(a)", thisVars:["this_f"]},
++                      rvalue: true,
++                      count: 2,
++                      funcName: f+"eq"
++                    })
++  }
++})();
+ 
+-  //Dumb solution: Just do dfs from boundary cell until we find any peak, or terminate
+-  var toVisit = [ cell ]
+-  cell.lastVisited = -n
+-  while(toVisit.length > 0) {
+-    cell = toVisit.pop()
+-    var cellVerts = cell.vertices
+-    var cellAdj = cell.adjacent
+-    for(var i=0; i<=d; ++i) {
+-      var neighbor = cellAdj[i]
+-      if(!neighbor.boundary || neighbor.lastVisited <= -n) {
+-        continue
+-      }
+-      var nv = neighbor.vertices
+-      for(var j=0; j<=d; ++j) {
+-        var vv = nv[j]
+-        if(vv < 0) {
+-          tuple[j] = point
+-        } else {
+-          tuple[j] = verts[vv]
+-        }
+-      }
+-      var o = this.orient()
+-      if(o > 0) {
+-        return neighbor
+-      }
+-      neighbor.lastVisited = -n
+-      if(o === 0) {
+-        toVisit.push(neighbor)
+-      }
+-    }
++var math_comm = [
++  "max",
++  "min",
++  "atan2",
++  "pow"
++]
++;(function(){
++  for(var i=0; i<math_comm.length; ++i) {
++    var f= math_comm[i]
++    exports[f] = makeOp({
++                  args:["array", "array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
++                  funcName: f
++                })
++    exports[f+"s"] = makeOp({
++                  args:["array", "array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
++                  funcName: f+"s"
++                  })
++    exports[f+"eq"] = makeOp({ args:["array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
++                  rvalue: true,
++                  count: 2,
++                  funcName: f+"eq"
++                  })
++    exports[f+"seq"] = makeOp({ args:["array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
++                  rvalue:true,
++                  count:2,
++                  funcName: f+"seq"
++                  })
+   }
+-  return null
+-}
++})();
+ 
+-proto.walk = function(point, random) {
+-  //Alias local properties
+-  var n = this.vertices.length - 1
+-  var d = this.dimension
+-  var verts = this.vertices
+-  var tuple = this.tuple
++var math_noncomm = [
++  "atan2",
++  "pow"
++]
++;(function(){
++  for(var i=0; i<math_noncomm.length; ++i) {
++    var f= math_noncomm[i]
++    exports[f+"op"] = makeOp({
++                  args:["array", "array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
++                  funcName: f+"op"
++                })
++    exports[f+"ops"] = makeOp({
++                  args:["array", "array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
++                  funcName: f+"ops"
++                  })
++    exports[f+"opeq"] = makeOp({ args:["array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
++                  rvalue: true,
++                  count: 2,
++                  funcName: f+"opeq"
++                  })
++    exports[f+"opseq"] = makeOp({ args:["array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
++                  rvalue:true,
++                  count:2,
++                  funcName: f+"opseq"
++                  })
++  }
++})();
+ 
+-  //Compute initial jump cell
+-  var initIndex = random ? (this.interior.length * Math.random())|0 : (this.interior.length-1)
+-  var cell = this.interior[ initIndex ]
++exports.any = compile({
++  args:["array"],
++  pre: EmptyProc,
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "if(a){return true}", localVars: [], thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return false"},
++  funcName: "any"
++})
+ 
+-  //Start walking
+-outerLoop:
+-  while(!cell.boundary) {
+-    var cellVerts = cell.vertices
+-    var cellAdj = cell.adjacent
++exports.all = compile({
++  args:["array"],
++  pre: EmptyProc,
++  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1}], body: "if(!x){return false}", localVars: [], thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return true"},
++  funcName: "all"
++})
+ 
+-    for(var i=0; i<=d; ++i) {
+-      tuple[i] = verts[cellVerts[i]]
+-    }
+-    cell.lastVisited = n
++exports.sum = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s+=a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "sum"
++})
+ 
+-    //Find farthest adjacent cell
+-    for(var i=0; i<=d; ++i) {
+-      var neighbor = cellAdj[i]
+-      if(neighbor.lastVisited >= n) {
+-        continue
+-      }
+-      var prev = tuple[i]
+-      tuple[i] = point
+-      var o = this.orient()
+-      tuple[i] = prev
+-      if(o < 0) {
+-        cell = neighbor
+-        continue outerLoop
+-      } else {
+-        if(!neighbor.boundary) {
+-          neighbor.lastVisited = n
+-        } else {
+-          neighbor.lastVisited = -n
+-        }
+-      }
+-    }
+-    return
+-  }
++exports.prod = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=1"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s*=a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "prod"
++})
+ 
+-  return cell
+-}
++exports.norm2squared = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norm2squared"
++})
++  
++exports.norm2 = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return Math.sqrt(this_s)"},
++  funcName: "norm2"
++})
++  
+ 
+-proto.addPeaks = function(point, cell) {
+-  var n = this.vertices.length - 1
+-  var d = this.dimension
+-  var verts = this.vertices
+-  var tuple = this.tuple
+-  var interior = this.interior
+-  var simplices = this.simplices
++exports.norminf = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:4}], body:"if(-a>this_s){this_s=-a}else if(a>this_s){this_s=a}", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norminf"
++})
+ 
+-  //Walking finished at boundary, time to add peaks
+-  var tovisit = [ cell ]
++exports.norm1 = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:3}], body: "this_s+=a<0?-a:a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norm1"
++})
+ 
+-  //Stretch initial boundary cell into a peak
+-  cell.lastVisited = n
+-  cell.vertices[cell.vertices.indexOf(-1)] = n
+-  cell.boundary = false
+-  interior.push(cell)
++exports.sup = compile({
++  args: [ "array" ],
++  pre:
++   { body: "this_h=-Infinity",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  body:
++   { body: "if(_inline_1_arg0_>this_h)this_h=_inline_1_arg0_",
++     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  post:
++   { body: "return this_h",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] }
++ })
+ 
+-  //Record a list of all new boundaries created by added peaks so we can glue them together when we are all done
+-  var glueFacets = []
++exports.inf = compile({
++  args: [ "array" ],
++  pre:
++   { body: "this_h=Infinity",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  body:
++   { body: "if(_inline_1_arg0_<this_h)this_h=_inline_1_arg0_",
++     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  post:
++   { body: "return this_h",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] }
++ })
+ 
+-  //Do a traversal of the boundary walking outward from starting peak
+-  while(tovisit.length > 0) {
+-    //Pop off peak and walk over adjacent cells
+-    var cell = tovisit.pop()
+-    var cellVerts = cell.vertices
+-    var cellAdj = cell.adjacent
+-    var indexOfN = cellVerts.indexOf(n)
+-    if(indexOfN < 0) {
+-      continue
+-    }
++exports.argmin = compile({
++  args:["index","array","shape"],
++  pre:{
++    body:"{this_v=Infinity;this_i=_inline_0_arg2_.slice(0)}",
++    args:[
++      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
++      ],
++    thisVars:["this_i","this_v"],
++    localVars:[]},
++  body:{
++    body:"{if(_inline_1_arg1_<this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
++    args:[
++      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
++      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
++    thisVars:["this_i","this_v"],
++    localVars:["_inline_1_k"]},
++  post:{
++    body:"{return this_i}",
++    args:[],
++    thisVars:["this_i"],
++    localVars:[]}
++})
+ 
+-    for(var i=0; i<=d; ++i) {
+-      if(i === indexOfN) {
+-        continue
+-      }
++exports.argmax = compile({
++  args:["index","array","shape"],
++  pre:{
++    body:"{this_v=-Infinity;this_i=_inline_0_arg2_.slice(0)}",
++    args:[
++      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
++      ],
++    thisVars:["this_i","this_v"],
++    localVars:[]},
++  body:{
++    body:"{if(_inline_1_arg1_>this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
++    args:[
++      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
++      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
++    thisVars:["this_i","this_v"],
++    localVars:["_inline_1_k"]},
++  post:{
++    body:"{return this_i}",
++    args:[],
++    thisVars:["this_i"],
++    localVars:[]}
++})  
+ 
+-      //For each boundary neighbor of the cell
+-      var neighbor = cellAdj[i]
+-      if(!neighbor.boundary || neighbor.lastVisited >= n) {
+-        continue
+-      }
++exports.random = makeOp({
++  args: ["array"],
++  pre: {args:[], body:"this_f=Math.random", thisVars:["this_f"]},
++  body: {args: ["a"], body:"a=this_f()", thisVars:["this_f"]},
++  funcName: "random"
++})
+ 
+-      var nv = neighbor.vertices
++exports.assign = makeOp({
++  args:["array", "array"],
++  body: {args:["a", "b"], body:"a=b"},
++  funcName: "assign" })
+ 
+-      //Test if neighbor is a peak
+-      if(neighbor.lastVisited !== -n) {      
+-        //Compute orientation of p relative to each boundary peak
+-        var indexOfNeg1 = 0
+-        for(var j=0; j<=d; ++j) {
+-          if(nv[j] < 0) {
+-            indexOfNeg1 = j
+-            tuple[j] = point
+-          } else {
+-            tuple[j] = verts[nv[j]]
+-          }
+-        }
+-        var o = this.orient()
++exports.assigns = makeOp({
++  args:["array", "scalar"],
++  body: {args:["a", "b"], body:"a=b"},
++  funcName: "assigns" })
+ 
+-        //Test if neighbor cell is also a peak
+-        if(o > 0) {
+-          nv[indexOfNeg1] = n
+-          neighbor.boundary = false
+-          interior.push(neighbor)
+-          tovisit.push(neighbor)
+-          neighbor.lastVisited = n
+-          continue
+-        } else {
+-          neighbor.lastVisited = -n
+-        }
+-      }
+ 
+-      var na = neighbor.adjacent
++exports.equals = compile({
++  args:["array", "array"],
++  pre: EmptyProc,
++  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1},
++               {name:"y", lvalue:false, rvalue:true, count:1}], 
++        body: "if(x!==y){return false}", 
++        localVars: [], 
++        thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return true"},
++  funcName: "equals"
++})
+ 
+-      //Otherwise, replace neighbor with new face
+-      var vverts = cellVerts.slice()
+-      var vadj = cellAdj.slice()
+-      var ncell = new Simplex(vverts, vadj, true)
+-      simplices.push(ncell)
+ 
+-      //Connect to neighbor
+-      var opposite = na.indexOf(cell)
+-      if(opposite < 0) {
+-        continue
+-      }
+-      na[opposite] = ncell
+-      vadj[indexOfN] = neighbor
+ 
+-      //Connect to cell
+-      vverts[i] = -1
+-      vadj[i] = cell
+-      cellAdj[i] = ncell
++},{"cwise-compiler":70}],186:[function(require,module,exports){
++"use strict"
+ 
+-      //Flip facet
+-      ncell.flip()
++var ndarray = require("ndarray")
++var do_convert = require("./doConvert.js")
+ 
+-      //Add to glue list
+-      for(var j=0; j<=d; ++j) {
+-        var uu = vverts[j]
+-        if(uu < 0 || uu === n) {
+-          continue
+-        }
+-        var nface = new Array(d-1)
+-        var nptr = 0
+-        for(var k=0; k<=d; ++k) {
+-          var vv = vverts[k]
+-          if(vv < 0 || k === j) {
+-            continue
+-          }
+-          nface[nptr++] = vv
+-        }
+-        glueFacets.push(new GlueFacet(nface, ncell, j))
+-      }
+-    }
++module.exports = function convert(arr, result) {
++  var shape = [], c = arr, sz = 1
++  while(Array.isArray(c)) {
++    shape.push(c.length)
++    sz *= c.length
++    c = c[0]
+   }
+-
+-  //Glue boundary facets together
+-  glueFacets.sort(compareGlue)
+-
+-  for(var i=0; i+1<glueFacets.length; i+=2) {
+-    var a = glueFacets[i]
+-    var b = glueFacets[i+1]
+-    var ai = a.index
+-    var bi = b.index
+-    if(ai < 0 || bi < 0) {
+-      continue
+-    }
+-    a.cell.adjacent[a.index] = b.cell
+-    b.cell.adjacent[b.index] = a.cell
++  if(shape.length === 0) {
++    return ndarray()
++  }
++  if(!result) {
++    result = ndarray(new Float64Array(sz), shape)
+   }
++  do_convert(result, arr)
++  return result
+ }
+ 
+-proto.insert = function(point, random) {
+-  //Add point
+-  var verts = this.vertices
+-  verts.push(point)
+-
+-  var cell = this.walk(point, random)
+-  if(!cell) {
+-    return
+-  }
++},{"./doConvert.js":187,"ndarray":191}],187:[function(require,module,exports){
++module.exports=require('cwise-compiler')({"args":["array","scalar","index"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{\nvar _inline_1_v=_inline_1_arg1_,_inline_1_i\nfor(_inline_1_i=0;_inline_1_i<_inline_1_arg2_.length-1;++_inline_1_i) {\n_inline_1_v=_inline_1_v[_inline_1_arg2_[_inline_1_i]]\n}\n_inline_1_arg0_=_inline_1_v[_inline_1_arg2_[_inline_1_arg2_.length-1]]\n}","args":[{"name":"_inline_1_arg0_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_1_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_1_arg2_","lvalue":false,"rvalue":true,"count":4}],"thisVars":[],"localVars":["_inline_1_i","_inline_1_v"]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"funcName":"convert","blockSize":64})
+ 
+-  //Alias local properties
+-  var d = this.dimension
+-  var tuple = this.tuple
++},{"cwise-compiler":70}],188:[function(require,module,exports){
++"use strict"
+ 
+-  //Degenerate case: If point is coplanar to cell, then walk until we find a non-degenerate boundary
+-  for(var i=0; i<=d; ++i) {
+-    var vv = cell.vertices[i]
+-    if(vv < 0) {
+-      tuple[i] = point
+-    } else {
+-      tuple[i] = verts[vv]
+-    }
+-  }
+-  var o = this.orient(tuple)
+-  if(o < 0) {
+-    return
+-  } else if(o === 0) {
+-    cell = this.handleBoundaryDegeneracy(cell, point)
+-    if(!cell) {
+-      return
+-    }
+-  }
++var pool = require("typedarray-pool")
+ 
+-  //Add peaks
+-  this.addPeaks(point, cell)
+-}
++var INSERTION_SORT_THRESHOLD = 32
+ 
+-//Extract all boundary cells
+-proto.boundary = function() {
+-  var d = this.dimension
+-  var boundary = []
+-  var cells = this.simplices
+-  var nc = cells.length
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    if(c.boundary) {
+-      var bcell = new Array(d)
+-      var cv = c.vertices
+-      var ptr = 0
+-      var parity = 0
+-      for(var j=0; j<=d; ++j) {
+-        if(cv[j] >= 0) {
+-          bcell[ptr++] = cv[j]
+-        } else {
+-          parity = j&1
+-        }
+-      }
+-      if(parity === (d&1)) {
+-        var t = bcell[0]
+-        bcell[0] = bcell[1]
+-        bcell[1] = t
+-      }
+-      boundary.push(bcell)
+-    }
++function getMallocFree(dtype) {
++  switch(dtype) {
++    case "uint8":
++      return [pool.mallocUint8, pool.freeUint8]
++    case "uint16":
++      return [pool.mallocUint16, pool.freeUint16]
++    case "uint32":
++      return [pool.mallocUint32, pool.freeUint32]
++    case "int8":
++      return [pool.mallocInt8, pool.freeInt8]
++    case "int16":
++      return [pool.mallocInt16, pool.freeInt16]
++    case "int32":
++      return [pool.mallocInt32, pool.freeInt32]
++    case "float32":
++      return [pool.mallocFloat, pool.freeFloat]
++    case "float64":
++      return [pool.mallocDouble, pool.freeDouble]
++    default:
++      return null
+   }
+-  return boundary
+ }
+ 
+-function incrementalConvexHull(points, randomSearch) {
+-  var n = points.length
+-  if(n === 0) {
+-    throw new Error("Must have at least d+1 points")
++function shapeArgs(dimension) {
++  var args = []
++  for(var i=0; i<dimension; ++i) {
++    args.push("s"+i)
+   }
+-  var d = points[0].length
+-  if(n <= d) {
+-    throw new Error("Must input at least d+1 points")
++  for(var i=0; i<dimension; ++i) {
++    args.push("n"+i)
++  }
++  for(var i=1; i<dimension; ++i) {
++    args.push("d"+i)
++  }
++  for(var i=1; i<dimension; ++i) {
++    args.push("e"+i)
+   }
++  for(var i=1; i<dimension; ++i) {
++    args.push("f"+i)
++  }
++  return args
++}
+ 
+-  //FIXME: This could be degenerate, but need to select d+1 non-coplanar points to bootstrap process
+-  var initialSimplex = points.slice(0, d+1)
++function createInsertionSort(order, dtype) {
+ 
+-  //Make sure initial simplex is positively oriented
+-  var o = orient.apply(void 0, initialSimplex)
+-  if(o === 0) {
+-    throw new Error("Input not in general position")
++  var code = ["'use strict'"]
++  var funcName = ["ndarrayInsertionSort", order.join("d"), dtype].join("")
++  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
++  var allocator = getMallocFree(dtype)
++  
++  var vars = [ "i,j,cptr,ptr=left*s0+offset" ]
++  
++  if(order.length > 1) {
++    var scratch_shape = []
++    for(var i=1; i<order.length; ++i) {
++      vars.push("i"+i)
++      scratch_shape.push("n"+i)
++    }
++    if(allocator) {
++      vars.push("scratch=malloc(" + scratch_shape.join("*") + ")")
++    } else {
++      vars.push("scratch=new Array("+scratch_shape.join("*") + ")")
++    }
++    vars.push("dptr","sptr","a","b")
++  } else {
++    vars.push("scratch")
+   }
+-  var initialCoords = new Array(d+1)
+-  for(var i=0; i<=d; ++i) {
+-    initialCoords[i] = i
++  
++  function dataRead(ptr) {
++    if(dtype === "generic") {
++      return ["data.get(", ptr, ")"].join("")
++    }
++    return ["data[",ptr,"]"].join("")
+   }
+-  if(o < 0) {
+-    initialCoords[0] = 1
+-    initialCoords[1] = 0
++  
++  function dataWrite(ptr, v) {
++    if(dtype === "generic") {
++      return ["data.set(", ptr, ",", v, ")"].join("")
++    }
++    return ["data[",ptr,"]=",v].join("")
+   }
++  
++  //Create function header
++  code.push(
++    ["function ", funcName, "(", funcArgs.join(","), "){var ", vars.join(",")].join(""),
++      "for(i=left+1;i<=right;++i){",
++        "j=i;ptr+=s0",
++        "cptr=ptr")
++  
++  
++  if(order.length > 1) {
++  
++    //Copy data into scratch
++    code.push("dptr=0;sptr=ptr")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
++    }
++    code.push("scratch[dptr++]=",dataRead("sptr"))
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push("sptr+=d"+j,"}")
++    }
+ 
+-  //Create initial topological index, glue pointers together (kind of messy)
+-  var initialCell = new Simplex(initialCoords, new Array(d+1), false)
+-  var boundary = initialCell.adjacent
+-  var list = new Array(d+2)
+-  for(var i=0; i<=d; ++i) {
+-    var verts = initialCoords.slice()
+-    for(var j=0; j<=d; ++j) {
+-      if(j === i) {
+-        verts[j] = -1
++    
++    //Compare items in outer loop
++    code.push("__g:while(j-->left){",
++              "dptr=0",
++              "sptr=cptr-s0")
++    for(var i=1; i<order.length; ++i) {
++      if(i === 1) {
++        code.push("__l:")
+       }
++      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
+     }
+-    var t = verts[0]
+-    verts[0] = verts[1]
+-    verts[1] = t
+-    var cell = new Simplex(verts, new Array(d+1), true)
+-    boundary[i] = cell
+-    list[i] = cell
+-  }
+-  list[d+1] = initialCell
+-  for(var i=0; i<=d; ++i) {
+-    var verts = boundary[i].vertices
+-    var adj = boundary[i].adjacent
+-    for(var j=0; j<=d; ++j) {
+-      var v = verts[j]
+-      if(v < 0) {
+-        adj[j] = initialCell
++    code.push(["a=", dataRead("sptr"),"\nb=scratch[dptr]\nif(a<b){break __g}\nif(a>b){break __l}"].join(""))
++    for(var i=order.length-1; i>=1; --i) {
++      code.push(
++        "sptr+=e"+i,
++        "dptr+=f"+i,
++        "}")
++    }
++    
++    //Copy data back
++    code.push("dptr=cptr;sptr=cptr-s0")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
+         continue
+       }
+-      for(var k=0; k<=d; ++k) {
+-        if(boundary[k].vertices.indexOf(v) < 0) {
+-          adj[j] = boundary[k]
+-        }
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
++    }
++    code.push(dataWrite("dptr", dataRead("sptr")))
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
+       }
++      code.push(["dptr+=d",j,";sptr+=d",j].join(""),"}")
+     }
+-  }
+-
+-  //Initialize triangles
+-  var triangles = new Triangulation(d, initialSimplex, list)
++    
++    //Close while loop
++    code.push("cptr-=s0\n}")
+ 
+-  //Insert remaining points
+-  var useRandom = !!randomSearch
+-  for(var i=d+1; i<n; ++i) {
+-    triangles.insert(points[i], useRandom)
++    //Copy scratch into cptr
++    code.push("dptr=cptr;sptr=0")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
++    }
++    code.push(dataWrite("dptr", "scratch[sptr++]"))
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push("dptr+=d"+j,"}")
++    }
++  } else {
++    code.push("scratch=" + dataRead("ptr"),
++              "while((j-->left)&&("+dataRead("cptr-s0")+">scratch)){",
++                dataWrite("cptr", dataRead("cptr-s0")),
++                "cptr-=s0",
++              "}",
++              dataWrite("cptr", "scratch"))
+   }
+   
+-  //Extract boundary cells
+-  return triangles.boundary()
+-}
+-},{"robust-orientation":225,"simplicial-complex":204}],202:[function(require,module,exports){
+-arguments[4][38][0].apply(exports,arguments)
+-},{"dup":38}],203:[function(require,module,exports){
+-arguments[4][85][0].apply(exports,arguments)
+-},{"dup":85}],204:[function(require,module,exports){
+-"use strict"; "use restrict";
+-
+-var bits      = require("bit-twiddle")
+-  , UnionFind = require("union-find")
+-
+-//Returns the dimension of a cell complex
+-function dimension(cells) {
+-  var d = 0
+-    , max = Math.max
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    d = max(d, cells[i].length)
++  //Close outer loop body
++  code.push("}")
++  if(order.length > 1 && allocator) {
++    code.push("free(scratch)")
++  }
++  code.push("} return " + funcName)
++  
++  //Compile and link function
++  if(allocator) {
++    var result = new Function("malloc", "free", code.join("\n"))
++    return result(allocator[0], allocator[1])
++  } else {
++    var result = new Function(code.join("\n"))
++    return result()
+   }
+-  return d-1
+ }
+-exports.dimension = dimension
+ 
+-//Counts the number of vertices in faces
+-function countVertices(cells) {
+-  var vc = -1
+-    , max = Math.max
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-    for(var j=0, jl=c.length; j<jl; ++j) {
+-      vc = max(vc, c[j])
++function createQuickSort(order, dtype, insertionSort) {
++  var code = [ "'use strict'" ]
++  var funcName = ["ndarrayQuickSort", order.join("d"), dtype].join("")
++  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
++  var allocator = getMallocFree(dtype)
++  var labelCounter=0
++  
++  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
++  
++  var vars = [
++    "sixth=((right-left+1)/6)|0",
++    "index1=left+sixth",
++    "index5=right-sixth",
++    "index3=(left+right)>>1",
++    "index2=index3-sixth",
++    "index4=index3+sixth",
++    "el1=index1",
++    "el2=index2",
++    "el3=index3",
++    "el4=index4",
++    "el5=index5",
++    "less=left+1",
++    "great=right-1",
++    "pivots_are_equal=true",
++    "tmp",
++    "tmp0",
++    "x",
++    "y",
++    "z",
++    "k",
++    "ptr0",
++    "ptr1",
++    "ptr2",
++    "comp_pivot1=0",
++    "comp_pivot2=0",
++    "comp=0"
++  ]
++  
++  if(order.length > 1) {
++    var ele_size = []
++    for(var i=1; i<order.length; ++i) {
++      ele_size.push("n"+i)
++      vars.push("i"+i)
++    }
++    for(var i=0; i<8; ++i) {
++      vars.push("b_ptr"+i)
+     }
++    vars.push(
++      "ptr3",
++      "ptr4",
++      "ptr5",
++      "ptr6",
++      "ptr7",
++      "pivot_ptr",
++      "ptr_shift",
++      "elementSize="+ele_size.join("*"))
++    if(allocator) {
++      vars.push("pivot1=malloc(elementSize)",
++                "pivot2=malloc(elementSize)")
++    } else {
++      vars.push("pivot1=new Array(elementSize),pivot2=new Array(elementSize)")
++    }
++  } else {
++    vars.push("pivot1", "pivot2")
+   }
+-  return vc+1
+-}
+-exports.countVertices = countVertices
+-
+-//Returns a deep copy of cells
+-function cloneCells(cells) {
+-  var ncells = new Array(cells.length)
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    ncells[i] = cells[i].slice(0)
++  
++  //Initialize local variables
++  code.push("var " + vars.join(","))
++  
++  function toPointer(v) {
++    return ["(offset+",v,"*s0)"].join("")
+   }
+-  return ncells
+-}
+-exports.cloneCells = cloneCells
+-
+-//Ranks a pair of cells up to permutation
+-function compareCells(a, b) {
+-  var n = a.length
+-    , t = a.length - b.length
+-    , min = Math.min
+-  if(t) {
+-    return t
++  
++  function dataRead(ptr) {
++    if(dtype === "generic") {
++      return ["data.get(", ptr, ")"].join("")
++    }
++    return ["data[",ptr,"]"].join("")
+   }
+-  switch(n) {
+-    case 0:
+-      return 0;
+-    case 1:
+-      return a[0] - b[0];
+-    case 2:
+-      var d = a[0]+a[1]-b[0]-b[1]
+-      if(d) {
+-        return d
++  
++  function dataWrite(ptr, v) {
++    if(dtype === "generic") {
++      return ["data.set(", ptr, ",", v, ")"].join("")
++    }
++    return ["data[",ptr,"]=",v].join("")
++  }
++  
++  function cacheLoop(ptrs, usePivot, body) {
++    if(ptrs.length === 1) {
++      code.push("ptr0="+toPointer(ptrs[0]))
++    } else {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
+       }
+-      return min(a[0],a[1]) - min(b[0],b[1])
+-    case 3:
+-      var l1 = a[0]+a[1]
+-        , m1 = b[0]+b[1]
+-      d = l1+a[2] - (m1+b[2])
+-      if(d) {
+-        return d
++    }
++    if(usePivot) {
++      code.push("pivot_ptr=0")
++    }
++    code.push("ptr_shift=offset")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
+       }
+-      var l0 = min(a[0], a[1])
+-        , m0 = min(b[0], b[1])
+-        , d  = min(l0, a[2]) - min(m0, b[2])
+-      if(d) {
+-        return d
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
++    }
++    if(ptrs.length > 1) {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
+       }
+-      return min(l0+a[2], l1) - min(m0+b[2], m1)
+-    
+-    //TODO: Maybe optimize n=4 as well?
+-    
+-    default:
+-      var as = a.slice(0)
+-      as.sort()
+-      var bs = b.slice(0)
+-      bs.sort()
+-      for(var i=0; i<n; ++i) {
+-        t = as[i] - bs[i]
+-        if(t) {
+-          return t
+-        }
++    }
++    code.push(body)
++    if(usePivot) {
++      code.push("++pivot_ptr")
++    }
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
+       }
+-      return 0
++      if(ptrs.length>1) {
++        code.push("ptr_shift+=d"+j)
++      } else {
++        code.push("ptr0+=d"+j)
++      }
++      code.push("}")
++    }
+   }
+-}
+-exports.compareCells = compareCells
+-
+-function compareZipped(a, b) {
+-  return compareCells(a[0], b[0])
+-}
+-
+-//Puts a cell complex into normal order for the purposes of findCell queries
+-function normalize(cells, attr) {
+-  if(attr) {
+-    var len = cells.length
+-    var zipped = new Array(len)
+-    for(var i=0; i<len; ++i) {
+-      zipped[i] = [cells[i], attr[i]]
++  
++  function lexicoLoop(label, ptrs, usePivot, body) {
++    if(ptrs.length === 1) {
++      code.push("ptr0="+toPointer(ptrs[0]))
++    } else {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
++      }
++      code.push("ptr_shift=offset")
+     }
+-    zipped.sort(compareZipped)
+-    for(var i=0; i<len; ++i) {
+-      cells[i] = zipped[i][0]
+-      attr[i] = zipped[i][1]
++    if(usePivot) {
++      code.push("pivot_ptr=0")
++    }
++    if(label) {
++      code.push(label+":")
++    }
++    for(var i=1; i<order.length; ++i) {
++      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
++    }
++    if(ptrs.length > 1) {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
++      }
++    }
++    code.push(body)
++    for(var i=order.length-1; i>=1; --i) {
++      if(usePivot) {
++        code.push("pivot_ptr+=f"+i)
++      }
++      if(ptrs.length > 1) {
++        code.push("ptr_shift+=e"+i)
++      } else {
++        code.push("ptr0+=e"+i)
++      }
++      code.push("}")
+     }
+-    return cells
+-  } else {
+-    cells.sort(compareCells)
+-    return cells
+   }
+-}
+-exports.normalize = normalize
+-
+-//Removes all duplicate cells in the complex
+-function unique(cells) {
+-  if(cells.length === 0) {
+-    return []
++  
++  function cleanUp() {
++    if(order.length > 1 && allocator) {
++      code.push("free(pivot1)", "free(pivot2)")
++    }
+   }
+-  var ptr = 1
+-    , len = cells.length
+-  for(var i=1; i<len; ++i) {
+-    var a = cells[i]
+-    if(compareCells(a, cells[i-1])) {
+-      if(i === ptr) {
+-        ptr++
+-        continue
+-      }
+-      cells[ptr++] = a
++  
++  function compareSwap(a_id, b_id) {
++    var a = "el"+a_id
++    var b = "el"+b_id
++    if(order.length > 1) {
++      var lbl = "__l" + (++labelCounter)
++      lexicoLoop(lbl, [a, b], false, [
++        "comp=",dataRead("ptr0"),"-",dataRead("ptr1"),"\n",
++        "if(comp>0){tmp0=", a, ";",a,"=",b,";", b,"=tmp0;break ", lbl,"}\n",
++        "if(comp<0){break ", lbl, "}"
++      ].join(""))
++    } else {
++      code.push(["if(", dataRead(toPointer(a)), ">", dataRead(toPointer(b)), "){tmp0=", a, ";",a,"=",b,";", b,"=tmp0}"].join(""))
+     }
+   }
+-  cells.length = ptr
+-  return cells
+-}
+-exports.unique = unique;
++  
++  compareSwap(1, 2)
++  compareSwap(4, 5)
++  compareSwap(1, 3)
++  compareSwap(2, 3)
++  compareSwap(1, 4)
++  compareSwap(3, 4)
++  compareSwap(2, 5)
++  compareSwap(2, 3)
++  compareSwap(4, 5)
++  
++  if(order.length > 1) {
++    cacheLoop(["el1", "el2", "el3", "el4", "el5", "index1", "index3", "index5"], true, [
++      "pivot1[pivot_ptr]=",dataRead("ptr1"),"\n",
++      "pivot2[pivot_ptr]=",dataRead("ptr3"),"\n",
++      "pivots_are_equal=pivots_are_equal&&(pivot1[pivot_ptr]===pivot2[pivot_ptr])\n",
++      "x=",dataRead("ptr0"),"\n",
++      "y=",dataRead("ptr2"),"\n",
++      "z=",dataRead("ptr4"),"\n",
++      dataWrite("ptr5", "x"),"\n",
++      dataWrite("ptr6", "y"),"\n",
++      dataWrite("ptr7", "z")
++    ].join(""))
++  } else {
++    code.push([
++      "pivot1=", dataRead(toPointer("el2")), "\n",
++      "pivot2=", dataRead(toPointer("el4")), "\n",
++      "pivots_are_equal=pivot1===pivot2\n",
++      "x=", dataRead(toPointer("el1")), "\n",
++      "y=", dataRead(toPointer("el3")), "\n",
++      "z=", dataRead(toPointer("el5")), "\n",
++      dataWrite(toPointer("index1"), "x"), "\n",
++      dataWrite(toPointer("index3"), "y"), "\n",
++      dataWrite(toPointer("index5"), "z")
++    ].join(""))
++  }
++  
+ 
+-//Finds a cell in a normalized cell complex
+-function findCell(cells, c) {
+-  var lo = 0
+-    , hi = cells.length-1
+-    , r  = -1
+-  while (lo <= hi) {
+-    var mid = (lo + hi) >> 1
+-      , s   = compareCells(cells[mid], c)
+-    if(s <= 0) {
+-      if(s === 0) {
+-        r = mid
+-      }
+-      lo = mid + 1
+-    } else if(s > 0) {
+-      hi = mid - 1
++  function moveElement(dst, src) {
++    if(order.length > 1) {
++      cacheLoop([dst, src], false,
++        dataWrite("ptr0", dataRead("ptr1"))
++      )
++    } else {
++      code.push(dataWrite(toPointer(dst), dataRead(toPointer(src))))
+     }
+   }
+-  return r
+-}
+-exports.findCell = findCell;
+-
+-//Builds an index for an n-cell.  This is more general than dual, but less efficient
+-function incidence(from_cells, to_cells) {
+-  var index = new Array(from_cells.length)
+-  for(var i=0, il=index.length; i<il; ++i) {
+-    index[i] = []
+-  }
+-  var b = []
+-  for(var i=0, n=to_cells.length; i<n; ++i) {
+-    var c = to_cells[i]
+-    var cl = c.length
+-    for(var k=1, kn=(1<<cl); k<kn; ++k) {
+-      b.length = bits.popCount(k)
+-      var l = 0
+-      for(var j=0; j<cl; ++j) {
+-        if(k & (1<<j)) {
+-          b[l++] = c[j]
+-        }
+-      }
+-      var idx=findCell(from_cells, b)
+-      if(idx < 0) {
+-        continue
+-      }
+-      while(true) {
+-        index[idx++].push(i)
+-        if(idx >= from_cells.length || compareCells(from_cells[idx], b) !== 0) {
+-          break
+-        }
+-      }
++  
++  moveElement("index2", "left")
++  moveElement("index4", "right")
++  
++  function comparePivot(result, ptr, n) {
++    if(order.length > 1) {
++      var lbl = "__l" + (++labelCounter)
++      lexicoLoop(lbl, [ptr], true, [
++        result,"=",dataRead("ptr0"),"-pivot",n,"[pivot_ptr]\n",
++        "if(",result,"!==0){break ", lbl, "}"
++      ].join(""))
++    } else {
++      code.push([result,"=", dataRead(toPointer(ptr)), "-pivot", n].join(""))
+     }
+   }
+-  return index
+-}
+-exports.incidence = incidence
+-
+-//Computes the dual of the mesh.  This is basically an optimized version of buildIndex for the situation where from_cells is just the list of vertices
+-function dual(cells, vertex_count) {
+-  if(!vertex_count) {
+-    return incidence(unique(skeleton(cells, 0)), cells, 0)
+-  }
+-  var res = new Array(vertex_count)
+-  for(var i=0; i<vertex_count; ++i) {
+-    res[i] = []
+-  }
+-  for(var i=0, len=cells.length; i<len; ++i) {
+-    var c = cells[i]
+-    for(var j=0, cl=c.length; j<cl; ++j) {
+-      res[c[j]].push(i)
++  
++  function swapElements(a, b) {
++    if(order.length > 1) {
++      cacheLoop([a,b],false,[
++        "tmp=",dataRead("ptr0"),"\n",
++        dataWrite("ptr0", dataRead("ptr1")),"\n",
++        dataWrite("ptr1", "tmp")
++      ].join(""))
++    } else {
++      code.push([
++        "ptr0=",toPointer(a),"\n",
++        "ptr1=",toPointer(b),"\n",
++        "tmp=",dataRead("ptr0"),"\n",
++        dataWrite("ptr0", dataRead("ptr1")),"\n",
++        dataWrite("ptr1", "tmp")
++      ].join(""))
+     }
+   }
+-  return res
+-}
+-exports.dual = dual
+-
+-//Enumerates all cells in the complex
+-function explode(cells) {
+-  var result = []
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-      , cl = c.length|0
+-    for(var j=1, jl=(1<<cl); j<jl; ++j) {
+-      var b = []
+-      for(var k=0; k<cl; ++k) {
+-        if((j >>> k) & 1) {
+-          b.push(c[k])
+-        }
+-      }
+-      result.push(b)
++  
++  function tripleSwap(k, less, great) {
++    if(order.length > 1) {
++      cacheLoop([k,less,great], false, [
++        "tmp=",dataRead("ptr0"),"\n",
++        dataWrite("ptr0", dataRead("ptr1")),"\n",
++        dataWrite("ptr1", dataRead("ptr2")),"\n",
++        dataWrite("ptr2", "tmp")
++      ].join(""))
++      code.push("++"+less, "--"+great)
++    } else {
++      code.push([
++        "ptr0=",toPointer(k),"\n",
++        "ptr1=",toPointer(less),"\n",
++        "ptr2=",toPointer(great),"\n",
++        "++",less,"\n",
++        "--",great,"\n",
++        "tmp=", dataRead("ptr0"), "\n",
++        dataWrite("ptr0", dataRead("ptr1")), "\n",
++        dataWrite("ptr1", dataRead("ptr2")), "\n",
++        dataWrite("ptr2", "tmp")
++      ].join(""))
+     }
+   }
+-  return normalize(result)
+-}
+-exports.explode = explode
+-
+-//Enumerates all of the n-cells of a cell complex
+-function skeleton(cells, n) {
+-  if(n < 0) {
+-    return []
++  
++  function swapAndDecrement(k, great) {
++    swapElements(k, great)
++    code.push("--"+great)
+   }
+-  var result = []
+-    , k0     = (1<<(n+1))-1
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var k=k0; k<(1<<c.length); k=bits.nextCombination(k)) {
+-      var b = new Array(n+1)
+-        , l = 0
+-      for(var j=0; j<c.length; ++j) {
+-        if(k & (1<<j)) {
+-          b[l++] = c[j]
+-        }
+-      }
+-      result.push(b)
++    
++  code.push("if(pivots_are_equal){")
++    //Pivots are equal case
++    code.push("for(k=less;k<=great;++k){")
++      comparePivot("comp", "k", 1)
++      code.push("if(comp===0){continue}")
++      code.push("if(comp<0){")
++        code.push("if(k!==less){")
++          swapElements("k", "less")
++        code.push("}")
++        code.push("++less")
++      code.push("}else{")
++        code.push("while(true){")
++          comparePivot("comp", "great", 1)
++          code.push("if(comp>0){")
++            code.push("great--")
++          code.push("}else if(comp<0){")
++            tripleSwap("k", "less", "great")
++            code.push("break")
++          code.push("}else{")
++            swapAndDecrement("k", "great")
++            code.push("break")
++          code.push("}")
++        code.push("}")
++      code.push("}")
++    code.push("}")
++  code.push("}else{")
++    //Pivots not equal case
++    code.push("for(k=less;k<=great;++k){")
++      comparePivot("comp_pivot1", "k", 1)
++      code.push("if(comp_pivot1<0){")
++        code.push("if(k!==less){")
++          swapElements("k", "less")
++        code.push("}")
++        code.push("++less")
++      code.push("}else{")
++        comparePivot("comp_pivot2", "k", 2)
++        code.push("if(comp_pivot2>0){")
++          code.push("while(true){")
++            comparePivot("comp", "great", 2)
++            code.push("if(comp>0){")
++              code.push("if(--great<k){break}")
++              code.push("continue")
++            code.push("}else{")
++              comparePivot("comp", "great", 1)
++              code.push("if(comp<0){")
++                tripleSwap("k", "less", "great")
++              code.push("}else{")
++                swapAndDecrement("k", "great")
++              code.push("}")
++              code.push("break")
++            code.push("}")
++          code.push("}")
++        code.push("}")
++      code.push("}")
++    code.push("}")
++  code.push("}")
++  
++  //Move pivots to correct place
++  function storePivot(mem_dest, pivot_dest, pivot) {
++    if(order.length>1) {
++      cacheLoop([mem_dest, pivot_dest], true, [
++        dataWrite("ptr0", dataRead("ptr1")), "\n",
++        dataWrite("ptr1", ["pivot",pivot,"[pivot_ptr]"].join(""))
++      ].join(""))
++    } else {
++      code.push(
++          dataWrite(toPointer(mem_dest), dataRead(toPointer(pivot_dest))),
++          dataWrite(toPointer(pivot_dest), "pivot"+pivot))
+     }
+   }
+-  return normalize(result)
+-}
+-exports.skeleton = skeleton;
++  
++  storePivot("left", "(less-1)", 1)
++  storePivot("right", "(great+1)", 2)
+ 
+-//Computes the boundary of all cells, does not remove duplicates
+-function boundary(cells) {
+-  var res = []
+-  for(var i=0,il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-    for(var j=0,cl=c.length; j<cl; ++j) {
+-      var b = new Array(c.length-1)
+-      for(var k=0, l=0; k<cl; ++k) {
+-        if(k !== j) {
+-          b[l++] = c[k]
+-        }
+-      }
+-      res.push(b)
++  //Recursive sort call
++  function doSort(left, right) {
++    code.push([
++      "if((",right,"-",left,")<=",INSERTION_SORT_THRESHOLD,"){\n",
++        "insertionSort(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
++      "}else{\n",
++        funcName, "(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
++      "}"
++    ].join(""))
++  }
++  doSort("left", "(less-2)")
++  doSort("(great+2)", "right")
++  
++  //If pivots are equal, then early out
++  code.push("if(pivots_are_equal){")
++    cleanUp()
++    code.push("return")
++  code.push("}")
++  
++  function walkPointer(ptr, pivot, body) {
++    if(order.length > 1) {
++      code.push(["__l",++labelCounter,":while(true){"].join(""))
++      cacheLoop([ptr], true, [
++        "if(", dataRead("ptr0"), "!==pivot", pivot, "[pivot_ptr]){break __l", labelCounter, "}"
++      ].join(""))
++      code.push(body, "}")
++    } else {
++      code.push(["while(", dataRead(toPointer(ptr)), "===pivot", pivot, "){", body, "}"].join(""))
+     }
+   }
+-  return normalize(res)
++  
++  //Check bounds
++  code.push("if(less<index1&&great>index5){")
++  
++    walkPointer("less", 1, "++less")
++    walkPointer("great", 2, "--great")
++  
++    code.push("for(k=less;k<=great;++k){")
++      comparePivot("comp_pivot1", "k", 1)
++      code.push("if(comp_pivot1===0){")
++        code.push("if(k!==less){")
++          swapElements("k", "less")
++        code.push("}")
++        code.push("++less")
++      code.push("}else{")
++        comparePivot("comp_pivot2", "k", 2)
++        code.push("if(comp_pivot2===0){")
++          code.push("while(true){")
++            comparePivot("comp", "great", 2)
++            code.push("if(comp===0){")
++              code.push("if(--great<k){break}")
++              code.push("continue")
++            code.push("}else{")
++              comparePivot("comp", "great", 1)
++              code.push("if(comp<0){")
++                tripleSwap("k", "less", "great")
++              code.push("}else{")
++                swapAndDecrement("k", "great")
++              code.push("}")
++              code.push("break")
++            code.push("}")
++          code.push("}")
++        code.push("}")
++      code.push("}")
++    code.push("}")
++  code.push("}")
++  
++  //Clean up and do a final sorting pass
++  cleanUp()
++  doSort("less", "great")
++ 
++  //Close off main loop
++  code.push("}return " + funcName)
++  
++  //Compile and link
++  if(order.length > 1 && allocator) {
++    var compiled = new Function("insertionSort", "malloc", "free", code.join("\n"))
++    return compiled(insertionSort, allocator[0], allocator[1])
++  }
++  var compiled = new Function("insertionSort", code.join("\n"))
++  return compiled(insertionSort)
+ }
+-exports.boundary = boundary;
+ 
+-//Computes connected components for a dense cell complex
+-function connectedComponents_dense(cells, vertex_count) {
+-  var labels = new UnionFind(vertex_count)
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      for(var k=j+1; k<c.length; ++k) {
+-        labels.link(c[j], c[k])
+-      }
+-    }
+-  }
+-  var components = []
+-    , component_labels = labels.ranks
+-  for(var i=0; i<component_labels.length; ++i) {
+-    component_labels[i] = -1
++function compileSort(order, dtype) {
++  var code = ["'use strict'"]
++  var funcName = ["ndarraySortWrapper", order.join("d"), dtype].join("")
++  var funcArgs = [ "array" ]
++  
++  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
++  
++  //Unpack local variables from array
++  var vars = ["data=array.data,offset=array.offset|0,shape=array.shape,stride=array.stride"]
++  for(var i=0; i<order.length; ++i) {
++    vars.push(["s",i,"=stride[",i,"]|0,n",i,"=shape[",i,"]|0"].join(""))
+   }
+-  for(var i=0; i<cells.length; ++i) {
+-    var l = labels.find(cells[i][0])
+-    if(component_labels[l] < 0) {
+-      component_labels[l] = components.length
+-      components.push([cells[i].slice(0)])
++  
++  var scratch_stride = new Array(order.length)
++  var nprod = []
++  for(var i=0; i<order.length; ++i) {
++    var k = order[i]
++    if(k === 0) {
++      continue
++    }
++    if(nprod.length === 0) {
++      scratch_stride[k] = "1"
+     } else {
+-      components[component_labels[l]].push(cells[i].slice(0))
++      scratch_stride[k] = nprod.join("*")
+     }
++    nprod.push("n"+k)
+   }
+-  return components
+-}
+-
+-//Computes connected components for a sparse graph
+-function connectedComponents_sparse(cells) {
+-  var vertices  = unique(normalize(skeleton(cells, 0)))
+-    , labels    = new UnionFind(vertices.length)
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      var vj = findCell(vertices, [c[j]])
+-      for(var k=j+1; k<c.length; ++k) {
+-        labels.link(vj, findCell(vertices, [c[k]]))
++  
++  var p = -1, q = -1
++  for(var i=0; i<order.length; ++i) {
++    var j = order[i]
++    if(j !== 0) {
++      if(p > 0) {
++        vars.push(["d",j,"=s",j,"-d",p,"*n",p].join(""))
++      } else {
++        vars.push(["d",j,"=s",j].join(""))
+       }
++      p = j
+     }
+-  }
+-  var components        = []
+-    , component_labels  = labels.ranks
+-  for(var i=0; i<component_labels.length; ++i) {
+-    component_labels[i] = -1
+-  }
+-  for(var i=0; i<cells.length; ++i) {
+-    var l = labels.find(findCell(vertices, [cells[i][0]]));
+-    if(component_labels[l] < 0) {
+-      component_labels[l] = components.length
+-      components.push([cells[i].slice(0)])
+-    } else {
+-      components[component_labels[l]].push(cells[i].slice(0))
++    var k = order.length-1-i
++    if(k !== 0) {
++      if(q > 0) {
++        vars.push(["e",k,"=s",k,"-e",q,"*n",q,
++                  ",f",k,"=",scratch_stride[k],"-f",q,"*n",q].join(""))
++      } else {
++        vars.push(["e",k,"=s",k,",f",k,"=",scratch_stride[k]].join(""))
++      }
++      q = k
+     }
+   }
+-  return components
+-}
+-
+-//Computes connected components for a cell complex
+-function connectedComponents(cells, vertex_count) {
+-  if(vertex_count) {
+-    return connectedComponents_dense(cells, vertex_count)
+-  }
+-  return connectedComponents_sparse(cells)
++  
++  //Declare local variables
++  code.push("var " + vars.join(","))
++  
++  //Create arguments for subroutine
++  var sortArgs = ["0", "n0-1", "data", "offset"].concat(shapeArgs(order.length))
++  
++  //Call main sorting routine
++  code.push([
++    "if(n0<=",INSERTION_SORT_THRESHOLD,"){",
++      "insertionSort(", sortArgs.join(","), ")}else{",
++      "quickSort(", sortArgs.join(","),
++    ")}"
++  ].join(""))
++  
++  //Return
++  code.push("}return " + funcName)
++  
++  //Link everything together
++  var result = new Function("insertionSort", "quickSort", code.join("\n"))
++  var insertionSort = createInsertionSort(order, dtype)
++  var quickSort = createQuickSort(order, dtype, insertionSort)
++  return result(insertionSort, quickSort)
+ }
+-exports.connectedComponents = connectedComponents
+ 
+-},{"bit-twiddle":202,"union-find":203}],205:[function(require,module,exports){
++module.exports = compileSort
++},{"typedarray-pool":246}],189:[function(require,module,exports){
+ "use strict"
+ 
+-function iota(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = i
++var compile = require("./lib/compile_sort.js")
++var CACHE = {}
++
++function sort(array) {
++  var order = array.order
++  var dtype = array.dtype
++  var typeSig = [order, dtype ]
++  var typeName = typeSig.join(":")
++  var compiled = CACHE[typeName]
++  if(!compiled) {
++    CACHE[typeName] = compiled = compile(order, dtype)
+   }
+-  return result
++  compiled(array)
++  return array
+ }
+ 
+-module.exports = iota
+-},{}],206:[function(require,module,exports){
+-/**
+- * Determine if an object is Buffer
+- *
+- * Author:   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+- * License:  MIT
+- *
+- * `npm install is-buffer`
+- */
++module.exports = sort
++},{"./lib/compile_sort.js":188}],190:[function(require,module,exports){
++'use strict'
+ 
+-module.exports = function (obj) {
+-  return !!(obj != null &&
+-    (obj._isBuffer || // For Safari 5-7 (missing Object.prototype.constructor)
+-      (obj.constructor &&
+-      typeof obj.constructor.isBuffer === 'function' &&
+-      obj.constructor.isBuffer(obj))
+-    ))
++var interp  = require('ndarray-linear-interpolate')
++
++
++var do_warp = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=new Array(_inline_33_arg4_)}","args":[{"name":"_inline_33_arg0_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_33_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_33_arg2_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_33_arg3_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_33_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_34_arg2_(this_warped,_inline_34_arg0_),_inline_34_arg1_=_inline_34_arg3_.apply(void 0,this_warped)}","args":[{"name":"_inline_34_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_34_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_34_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_34_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_34_arg4_","lvalue":false,"rvalue":false,"count":0}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warpND","blockSize":64})
++
++var do_warp_1 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_37_arg2_(this_warped,_inline_37_arg0_),_inline_37_arg1_=_inline_37_arg3_(_inline_37_arg4_,this_warped[0])}","args":[{"name":"_inline_37_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_37_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_37_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_37_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_37_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp1D","blockSize":64})
++
++var do_warp_2 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_40_arg2_(this_warped,_inline_40_arg0_),_inline_40_arg1_=_inline_40_arg3_(_inline_40_arg4_,this_warped[0],this_warped[1])}","args":[{"name":"_inline_40_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_40_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_40_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_40_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_40_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp2D","blockSize":64})
++
++var do_warp_3 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_43_arg2_(this_warped,_inline_43_arg0_),_inline_43_arg1_=_inline_43_arg3_(_inline_43_arg4_,this_warped[0],this_warped[1],this_warped[2])}","args":[{"name":"_inline_43_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_43_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_43_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_43_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_43_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp3D","blockSize":64})
++
++module.exports = function warp(dest, src, func) {
++  switch(src.shape.length) {
++    case 1:
++      do_warp_1(dest, func, interp.d1, src)
++      break
++    case 2:
++      do_warp_2(dest, func, interp.d2, src)
++      break
++    case 3:
++      do_warp_3(dest, func, interp.d3, src)
++      break
++    default:
++      do_warp(dest, func, interp.bind(undefined, src), src.shape.length)
++      break
++  }
++  return dest
+ }
+ 
+-},{}],207:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = mouseListen
+-
+-var mouse = require('mouse-event')
++},{"cwise/lib/wrapper":73,"ndarray-linear-interpolate":184}],191:[function(require,module,exports){
++var iota = require("iota-array")
++var isBuffer = require("is-buffer")
+ 
+-function mouseListen(element, callback) {
++var hasTypedArrays  = ((typeof Float64Array) !== "undefined")
+ 
+-  if(!callback) {
+-    callback = element
+-    element = window
+-  }
++function compare1st(a, b) {
++  return a[0] - b[0]
++}
+ 
+-  var buttonState = 0
+-  var x = 0
+-  var y = 0
+-  var mods = {
+-    shift:   false,
+-    alt:     false,
+-    control: false,
+-    meta:    false
++function order() {
++  var stride = this.stride
++  var terms = new Array(stride.length)
++  var i
++  for(i=0; i<terms.length; ++i) {
++    terms[i] = [Math.abs(stride[i]), i]
+   }
+-  var attached = false
+-
+-  function updateMods(ev) {
+-    var changed = false
+-    if('altKey' in ev) {
+-      changed = changed || ev.altKey !== mods.alt
+-      mods.alt = !!ev.altKey
+-    }
+-    if('shiftKey' in ev) {
+-      changed = changed || ev.shiftKey !== mods.shift
+-      mods.shift = !!ev.shiftKey
+-    }
+-    if('ctrlKey' in ev) {
+-      changed = changed || ev.ctrlKey !== mods.control
+-      mods.control = !!ev.ctrlKey
+-    }
+-    if('metaKey' in ev) {
+-      changed = changed || ev.metaKey !== mods.meta
+-      mods.meta = !!ev.metaKey
+-    }
+-    return changed
++  terms.sort(compare1st)
++  var result = new Array(terms.length)
++  for(i=0; i<result.length; ++i) {
++    result[i] = terms[i][1]
+   }
++  return result
++}
+ 
+-  function handleEvent(nextButtons, ev) {
+-    var nextX = mouse.x(ev)
+-    var nextY = mouse.y(ev)
+-    if('buttons' in ev) {
+-      nextButtons = ev.buttons|0
+-    }
+-    if(nextButtons !== buttonState ||
+-       nextX !== x ||
+-       nextY !== y ||
+-       updateMods(ev)) {
+-      buttonState = nextButtons|0
+-      x = nextX||0
+-      y = nextY||0
+-      callback(buttonState, x, y, mods)
+-    }
++function compileConstructor(dtype, dimension) {
++  var className = ["View", dimension, "d", dtype].join("")
++  if(dimension < 0) {
++    className = "View_Nil" + dtype
+   }
++  var useGetters = (dtype === "generic")
+ 
+-  function clearState(ev) {
+-    handleEvent(0, ev)
++  if(dimension === -1) {
++    //Special case for trivial arrays
++    var code =
++      "function "+className+"(a){this.data=a;};\
++var proto="+className+".prototype;\
++proto.dtype='"+dtype+"';\
++proto.index=function(){return -1};\
++proto.size=0;\
++proto.dimension=-1;\
++proto.shape=proto.stride=proto.order=[];\
++proto.lo=proto.hi=proto.transpose=proto.step=\
++function(){return new "+className+"(this.data);};\
++proto.get=proto.set=function(){};\
++proto.pick=function(){return null};\
++return function construct_"+className+"(a){return new "+className+"(a);}"
++    var procedure = new Function(code)
++    return procedure()
++  } else if(dimension === 0) {
++    //Special case for 0d arrays
++    var code =
++      "function "+className+"(a,d) {\
++this.data = a;\
++this.offset = d\
++};\
++var proto="+className+".prototype;\
++proto.dtype='"+dtype+"';\
++proto.index=function(){return this.offset};\
++proto.dimension=0;\
++proto.size=1;\
++proto.shape=\
++proto.stride=\
++proto.order=[];\
++proto.lo=\
++proto.hi=\
++proto.transpose=\
++proto.step=function "+className+"_copy() {\
++return new "+className+"(this.data,this.offset)\
++};\
++proto.pick=function "+className+"_pick(){\
++return TrivialArray(this.data);\
++};\
++proto.valueOf=proto.get=function "+className+"_get(){\
++return "+(useGetters ? "this.data.get(this.offset)" : "this.data[this.offset]")+
++"};\
++proto.set=function "+className+"_set(v){\
++return "+(useGetters ? "this.data.set(this.offset,v)" : "this.data[this.offset]=v")+"\
++};\
++return function construct_"+className+"(a,b,c,d){return new "+className+"(a,d)}"
++    var procedure = new Function("TrivialArray", code)
++    return procedure(CACHED_CONSTRUCTORS[dtype][0])
+   }
+ 
+-  function handleBlur() {
+-    if(buttonState ||
+-      x ||
+-      y ||
+-      mods.shift ||
+-      mods.alt ||
+-      mods.meta ||
+-      mods.control) {
++  var code = ["'use strict'"]
+ 
+-      x = y = 0
+-      buttonState = 0
+-      mods.shift = mods.alt = mods.control = mods.meta = false
+-      callback(0, 0, 0, mods)
+-    }
+-  }
++  //Create constructor for view
++  var indices = iota(dimension)
++  var args = indices.map(function(i) { return "i"+i })
++  var index_str = "this.offset+" + indices.map(function(i) {
++        return "this.stride[" + i + "]*i" + i
++      }).join("+")
++  var shapeArg = indices.map(function(i) {
++      return "b"+i
++    }).join(",")
++  var strideArg = indices.map(function(i) {
++      return "c"+i
++    }).join(",")
++  code.push(
++    "function "+className+"(a," + shapeArg + "," + strideArg + ",d){this.data=a",
++      "this.shape=[" + shapeArg + "]",
++      "this.stride=[" + strideArg + "]",
++      "this.offset=d|0}",
++    "var proto="+className+".prototype",
++    "proto.dtype='"+dtype+"'",
++    "proto.dimension="+dimension)
+ 
+-  function handleMods(ev) {
+-    if(updateMods(ev)) {
+-      callback(buttonState, x, y, mods)
+-    }
+-  }
++  //view.size:
++  code.push("Object.defineProperty(proto,'size',{get:function "+className+"_size(){\
++return "+indices.map(function(i) { return "this.shape["+i+"]" }).join("*"),
++"}})")
+ 
+-  function handleMouseMove(ev) {
+-    if(mouse.buttons(ev) === 0) {
+-      handleEvent(0, ev)
++  //view.order:
++  if(dimension === 1) {
++    code.push("proto.order=[0]")
++  } else {
++    code.push("Object.defineProperty(proto,'order',{get:")
++    if(dimension < 4) {
++      code.push("function "+className+"_order(){")
++      if(dimension === 2) {
++        code.push("return (Math.abs(this.stride[0])>Math.abs(this.stride[1]))?[1,0]:[0,1]}})")
++      } else if(dimension === 3) {
++        code.push(
++"var s0=Math.abs(this.stride[0]),s1=Math.abs(this.stride[1]),s2=Math.abs(this.stride[2]);\
++if(s0>s1){\
++if(s1>s2){\
++return [2,1,0];\
++}else if(s0>s2){\
++return [1,2,0];\
++}else{\
++return [1,0,2];\
++}\
++}else if(s0>s2){\
++return [2,0,1];\
++}else if(s2>s1){\
++return [0,1,2];\
++}else{\
++return [0,2,1];\
++}}})")
++      }
+     } else {
+-      handleEvent(buttonState, ev)
++      code.push("ORDER})")
+     }
+   }
+ 
+-  function handleMouseDown(ev) {
+-    handleEvent(buttonState | mouse.buttons(ev), ev)
++  //view.set(i0, ..., v):
++  code.push(
++"proto.set=function "+className+"_set("+args.join(",")+",v){")
++  if(useGetters) {
++    code.push("return this.data.set("+index_str+",v)}")
++  } else {
++    code.push("return this.data["+index_str+"]=v}")
+   }
+ 
+-  function handleMouseUp(ev) {
+-    handleEvent(buttonState & ~mouse.buttons(ev), ev)
++  //view.get(i0, ...):
++  code.push("proto.get=function "+className+"_get("+args.join(",")+"){")
++  if(useGetters) {
++    code.push("return this.data.get("+index_str+")}")
++  } else {
++    code.push("return this.data["+index_str+"]}")
+   }
+ 
+-  function attachListeners() {
+-    if(attached) {
+-      return
+-    }
+-    attached = true
++  //view.index:
++  code.push(
++    "proto.index=function "+className+"_index(", args.join(), "){return "+index_str+"}")
+ 
+-    element.addEventListener('mousemove', handleMouseMove)
++  //view.hi():
++  code.push("proto.hi=function "+className+"_hi("+args.join(",")+"){return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return ["(typeof i",i,"!=='number'||i",i,"<0)?this.shape[", i, "]:i", i,"|0"].join("")
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "this.stride["+i + "]"
++    }).join(",")+",this.offset)}")
+ 
+-    element.addEventListener('mousedown', handleMouseDown)
++  //view.lo():
++  var a_vars = indices.map(function(i) { return "a"+i+"=this.shape["+i+"]" })
++  var c_vars = indices.map(function(i) { return "c"+i+"=this.stride["+i+"]" })
++  code.push("proto.lo=function "+className+"_lo("+args.join(",")+"){var b=this.offset,d=0,"+a_vars.join(",")+","+c_vars.join(","))
++  for(var i=0; i<dimension; ++i) {
++    code.push(
++"if(typeof i"+i+"==='number'&&i"+i+">=0){\
++d=i"+i+"|0;\
++b+=c"+i+"*d;\
++a"+i+"-=d}")
++  }
++  code.push("return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return "a"+i
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "c"+i
++    }).join(",")+",b)}")
+ 
+-    element.addEventListener('mouseup', handleMouseUp)
++  //view.step():
++  code.push("proto.step=function "+className+"_step("+args.join(",")+"){var "+
++    indices.map(function(i) {
++      return "a"+i+"=this.shape["+i+"]"
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "b"+i+"=this.stride["+i+"]"
++    }).join(",")+",c=this.offset,d=0,ceil=Math.ceil")
++  for(var i=0; i<dimension; ++i) {
++    code.push(
++"if(typeof i"+i+"==='number'){\
++d=i"+i+"|0;\
++if(d<0){\
++c+=b"+i+"*(a"+i+"-1);\
++a"+i+"=ceil(-a"+i+"/d)\
++}else{\
++a"+i+"=ceil(a"+i+"/d)\
++}\
++b"+i+"*=d\
++}")
++  }
++  code.push("return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return "a" + i
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "b" + i
++    }).join(",")+",c)}")
+ 
+-    element.addEventListener('mouseleave', clearState)
+-    element.addEventListener('mouseenter', clearState)
+-    element.addEventListener('mouseout', clearState)
+-    element.addEventListener('mouseover', clearState)
++  //view.transpose():
++  var tShape = new Array(dimension)
++  var tStride = new Array(dimension)
++  for(var i=0; i<dimension; ++i) {
++    tShape[i] = "a[i"+i+"]"
++    tStride[i] = "b[i"+i+"]"
++  }
++  code.push("proto.transpose=function "+className+"_transpose("+args+"){"+
++    args.map(function(n,idx) { return n + "=(" + n + "===undefined?" + idx + ":" + n + "|0)"}).join(";"),
++    "var a=this.shape,b=this.stride;return new "+className+"(this.data,"+tShape.join(",")+","+tStride.join(",")+",this.offset)}")
+ 
+-    element.addEventListener('blur', handleBlur)
++  //view.pick():
++  code.push("proto.pick=function "+className+"_pick("+args+"){var a=[],b=[],c=this.offset")
++  for(var i=0; i<dimension; ++i) {
++    code.push("if(typeof i"+i+"==='number'&&i"+i+">=0){c=(c+this.stride["+i+"]*i"+i+")|0}else{a.push(this.shape["+i+"]);b.push(this.stride["+i+"])}")
++  }
++  code.push("var ctor=CTOR_LIST[a.length+1];return ctor(this.data,a,b,c)}")
+ 
+-    element.addEventListener('keyup', handleMods)
+-    element.addEventListener('keydown', handleMods)
+-    element.addEventListener('keypress', handleMods)
++  //Add return statement
++  code.push("return function construct_"+className+"(data,shape,stride,offset){return new "+className+"(data,"+
++    indices.map(function(i) {
++      return "shape["+i+"]"
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "stride["+i+"]"
++    }).join(",")+",offset)}")
+ 
+-    if(element !== window) {
+-      window.addEventListener('blur', handleBlur)
++  //Compile procedure
++  var procedure = new Function("CTOR_LIST", "ORDER", code.join("\n"))
++  return procedure(CACHED_CONSTRUCTORS[dtype], order)
++}
+ 
+-      window.addEventListener('keyup', handleMods)
+-      window.addEventListener('keydown', handleMods)
+-      window.addEventListener('keypress', handleMods)
+-    }
++function arrayDType(data) {
++  if(isBuffer(data)) {
++    return "buffer"
+   }
+-
+-  function detachListeners() {
+-    if(!attached) {
+-      return
++  if(hasTypedArrays) {
++    switch(Object.prototype.toString.call(data)) {
++      case "[object Float64Array]":
++        return "float64"
++      case "[object Float32Array]":
++        return "float32"
++      case "[object Int8Array]":
++        return "int8"
++      case "[object Int16Array]":
++        return "int16"
++      case "[object Int32Array]":
++        return "int32"
++      case "[object Uint8Array]":
++        return "uint8"
++      case "[object Uint16Array]":
++        return "uint16"
++      case "[object Uint32Array]":
++        return "uint32"
++      case "[object Uint8ClampedArray]":
++        return "uint8_clamped"
+     }
+-    attached = false
+-
+-    element.removeEventListener('mousemove', handleMouseMove)
+-
+-    element.removeEventListener('mousedown', handleMouseDown)
+-
+-    element.removeEventListener('mouseup', handleMouseUp)
+-
+-    element.removeEventListener('mouseleave', clearState)
+-    element.removeEventListener('mouseenter', clearState)
+-    element.removeEventListener('mouseout', clearState)
+-    element.removeEventListener('mouseover', clearState)
+-
+-    element.removeEventListener('blur', handleBlur)
++  }
++  if(Array.isArray(data)) {
++    return "array"
++  }
++  return "generic"
++}
+ 
+-    element.removeEventListener('keyup', handleMods)
+-    element.removeEventListener('keydown', handleMods)
+-    element.removeEventListener('keypress', handleMods)
++var CACHED_CONSTRUCTORS = {
++  "float32":[],
++  "float64":[],
++  "int8":[],
++  "int16":[],
++  "int32":[],
++  "uint8":[],
++  "uint16":[],
++  "uint32":[],
++  "array":[],
++  "uint8_clamped":[],
++  "buffer":[],
++  "generic":[]
++}
+ 
+-    if(element !== window) {
+-      window.removeEventListener('blur', handleBlur)
++;(function() {
++  for(var id in CACHED_CONSTRUCTORS) {
++    CACHED_CONSTRUCTORS[id].push(compileConstructor(id, -1))
++  }
++});
+ 
+-      window.removeEventListener('keyup', handleMods)
+-      window.removeEventListener('keydown', handleMods)
+-      window.removeEventListener('keypress', handleMods)
++function wrappedNDArrayCtor(data, shape, stride, offset) {
++  if(data === undefined) {
++    var ctor = CACHED_CONSTRUCTORS.array[0]
++    return ctor([])
++  } else if(typeof data === "number") {
++    data = [data]
++  }
++  if(shape === undefined) {
++    shape = [ data.length ]
++  }
++  var d = shape.length
++  if(stride === undefined) {
++    stride = new Array(d)
++    for(var i=d-1, sz=1; i>=0; --i) {
++      stride[i] = sz
++      sz *= shape[i]
++    }
++  }
++  if(offset === undefined) {
++    offset = 0
++    for(var i=0; i<d; ++i) {
++      if(stride[i] < 0) {
++        offset -= (shape[i]-1)*stride[i]
++      }
+     }
+   }
++  var dtype = arrayDType(data)
++  var ctor_list = CACHED_CONSTRUCTORS[dtype]
++  while(ctor_list.length <= d+1) {
++    ctor_list.push(compileConstructor(dtype, ctor_list.length-1))
++  }
++  var ctor = ctor_list[d+1]
++  return ctor(data, shape, stride, offset)
++}
+ 
+-  //Attach listeners
+-  attachListeners()
++module.exports = wrappedNDArrayCtor
+ 
+-  var result = {
+-    element: element
+-  }
++},{"iota-array":168,"is-buffer":169}],192:[function(require,module,exports){
++"use strict"
+ 
+-  Object.defineProperties(result, {
+-    enabled: {
+-      get: function() { return attached },
+-      set: function(f) {
+-        if(f) {
+-          attachListeners()
+-        } else {
+-          detachListeners
+-        }
+-      },
+-      enumerable: true
+-    },
+-    buttons: {
+-      get: function() { return buttonState },
+-      enumerable: true
+-    },
+-    x: {
+-      get: function() { return x },
+-      enumerable: true
+-    },
+-    y: {
+-      get: function() { return y },
+-      enumerable: true
+-    },
+-    mods: {
+-      get: function() { return mods },
+-      enumerable: true
+-    }
+-  })
++var doubleBits = require("double-bits")
+ 
+-  return result
+-}
++var SMALLEST_DENORM = Math.pow(2, -1074)
++var UINT_MAX = (-1)>>>0
+ 
+-},{"mouse-event":208}],208:[function(require,module,exports){
+-'use strict'
++module.exports = nextafter
+ 
+-function mouseButtons(ev) {
+-  if(typeof ev === 'object') {
+-    if('buttons' in ev) {
+-      return ev.buttons
+-    } else if('which' in ev) {
+-      var b = ev.which
+-      if(b === 2) {
+-        return 4
+-      } else if(b === 3) {
+-        return 2
+-      } else if(b > 0) {
+-        return 1<<(b-1)
+-      }
+-    } else if('button' in ev) {
+-      var b = ev.button
+-      if(b === 1) {
+-        return 4
+-      } else if(b === 2) {
+-        return 2
+-      } else if(b >= 0) {
+-        return 1<<b
+-      }
++function nextafter(x, y) {
++  if(isNaN(x) || isNaN(y)) {
++    return NaN
++  }
++  if(x === y) {
++    return x
++  }
++  if(x === 0) {
++    if(y < 0) {
++      return -SMALLEST_DENORM
++    } else {
++      return SMALLEST_DENORM
+     }
+   }
+-  return 0
+-}
+-exports.buttons = mouseButtons
+-
+-function mouseElement(ev) {
+-  return ev.target || ev.srcElement || window
+-}
+-exports.element = mouseElement
+-
+-function mouseRelativeX(ev) {
+-  if(typeof ev === 'object') {
+-    if('offsetX' in ev) {
+-      return ev.offsetX
++  var hi = doubleBits.hi(x)
++  var lo = doubleBits.lo(x)
++  if((y > x) === (x > 0)) {
++    if(lo === UINT_MAX) {
++      hi += 1
++      lo = 0
++    } else {
++      lo += 1
+     }
+-    var target = mouseElement(ev)
+-    var bounds = target.getBoundingClientRect()
+-    return ev.clientX - bounds.left
+-  }
+-  return 0
+-}
+-exports.x = mouseRelativeX
+-
+-function mouseRelativeY(ev) {
+-  if(typeof ev === 'object') {
+-    if('offsetY' in ev) {
+-      return ev.offsetY
++  } else {
++    if(lo === 0) {
++      lo = UINT_MAX
++      hi -= 1
++    } else {
++      lo -= 1
+     }
+-    var target = mouseElement(ev)
+-    var bounds = target.getBoundingClientRect()
+-    return ev.clientY - bounds.top
+   }
+-  return 0
++  return doubleBits.pack(lo, hi)
+ }
+-exports.y = mouseRelativeY
++},{"double-bits":76}],193:[function(require,module,exports){
++var DEFAULT_NORMALS_EPSILON = 1e-6;
++var DEFAULT_FACE_EPSILON = 1e-6;
+ 
+-},{}],209:[function(require,module,exports){
+-module.exports = function parseUnit(str, out) {
+-    if (!out)
+-        out = [ 0, '' ]
++//Estimate the vertex normals of a mesh
++exports.vertexNormals = function(faces, positions, specifiedEpsilon) {
+ 
+-    str = String(str)
+-    var num = parseFloat(str, 10)
+-    out[0] = num
+-    out[1] = str.match(/[\d.\-\+]*\s*(.*)/)[1] || ''
+-    return out
+-}
+-},{}],210:[function(require,module,exports){
+-'use strict'
++  var N         = positions.length;
++  var normals   = new Array(N);
++  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_NORMALS_EPSILON : specifiedEpsilon;
+ 
+-var parseUnit = require('parse-unit')
++  //Initialize normal array
++  for(var i=0; i<N; ++i) {
++    normals[i] = [0.0, 0.0, 0.0];
++  }
+ 
+-module.exports = toPX
++  //Walk over all the faces and add per-vertex contribution to normal weights
++  for(var i=0; i<faces.length; ++i) {
++    var f = faces[i];
++    var p = 0;
++    var c = f[f.length-1];
++    var n = f[0];
++    for(var j=0; j<f.length; ++j) {
+ 
+-var PIXELS_PER_INCH = 96
++      //Shift indices back
++      p = c;
++      c = n;
++      n = f[(j+1) % f.length];
+ 
+-function getPropertyInPX(element, prop) {
+-  var parts = parseUnit(getComputedStyle(element).getPropertyValue(prop))
+-  return parts[0] * toPX(parts[1], element)
+-}
++      var v0 = positions[p];
++      var v1 = positions[c];
++      var v2 = positions[n];
+ 
+-//This brutal hack is needed
+-function getSizeBrutal(unit, element) {
+-  var testDIV = document.createElement('div')
+-  testDIV.style['font-size'] = '128' + unit
+-  element.appendChild(testDIV)
+-  var size = getPropertyInPX(testDIV, 'font-size') / 128
+-  element.removeChild(testDIV)
+-  return size
+-}
++      //Compute infineteismal arcs
++      var d01 = new Array(3);
++      var m01 = 0.0;
++      var d21 = new Array(3);
++      var m21 = 0.0;
++      for(var k=0; k<3; ++k) {
++        d01[k] = v0[k]  - v1[k];
++        m01   += d01[k] * d01[k];
++        d21[k] = v2[k]  - v1[k];
++        m21   += d21[k] * d21[k];
++      }
+ 
+-function toPX(str, element) {
+-  element = element || document.body
+-  str = (str || 'px').trim().toLowerCase()
+-  if(element === window || element === document) {
+-    element = document.body 
++      //Accumulate values in normal
++      if(m01 * m21 > epsilon) {
++        var norm = normals[c];
++        var w = 1.0 / Math.sqrt(m01 * m21);
++        for(var k=0; k<3; ++k) {
++          var u = (k+1)%3;
++          var v = (k+2)%3;
++          norm[k] += w * (d21[u] * d01[v] - d21[v] * d01[u]);
++        }
++      }
++    }
+   }
+-  switch(str) {
+-    case '%':  //Ambiguous, not sure if we should use width or height
+-      return element.clientHeight / 100.0
+-    case 'ch':
+-    case 'ex':
+-      return getSizeBrutal(str, element)
+-    case 'em':
+-      return getPropertyInPX(element, 'font-size')
+-    case 'rem':
+-      return getPropertyInPX(document.body, 'font-size')
+-    case 'vw':
+-      return window.innerWidth/100
+-    case 'vh':
+-      return window.innerHeight/100
+-    case 'vmin':
+-      return Math.min(window.innerWidth, window.innerHeight) / 100
+-    case 'vmax':
+-      return Math.max(window.innerWidth, window.innerHeight) / 100
+-    case 'in':
+-      return PIXELS_PER_INCH
+-    case 'cm':
+-      return PIXELS_PER_INCH / 2.54
+-    case 'mm':
+-      return PIXELS_PER_INCH / 25.4
+-    case 'pt':
+-      return PIXELS_PER_INCH / 72
+-    case 'pc':
+-      return PIXELS_PER_INCH / 6
++
++  //Scale all normals to unit length
++  for(var i=0; i<N; ++i) {
++    var norm = normals[i];
++    var m = 0.0;
++    for(var k=0; k<3; ++k) {
++      m += norm[k] * norm[k];
++    }
++    if(m > epsilon) {
++      var w = 1.0 / Math.sqrt(m);
++      for(var k=0; k<3; ++k) {
++        norm[k] *= w;
++      }
++    } else {
++      for(var k=0; k<3; ++k) {
++        norm[k] = 0.0;
++      }
++    }
+   }
+-  return 1
++
++  //Return the resulting set of patches
++  return normals;
+ }
+-},{"parse-unit":209}],211:[function(require,module,exports){
+-'use strict'
+ 
+-var toPX = require('to-px')
++//Compute face normals of a mesh
++exports.faceNormals = function(faces, positions, specifiedEpsilon) {
+ 
+-module.exports = mouseWheelListen
++  var N         = faces.length;
++  var normals   = new Array(N);
++  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_FACE_EPSILON : specifiedEpsilon;
+ 
+-function mouseWheelListen(element, callback, noScroll) {
+-  if(typeof element === 'function') {
+-    noScroll = !!callback
+-    callback = element
+-    element = window
+-  }
+-  var lineHeight = toPX('ex', element)
+-  var listener = function(ev) {
+-    if(noScroll) {
+-      ev.preventDefault()
++  for(var i=0; i<N; ++i) {
++    var f = faces[i];
++    var pos = new Array(3);
++    for(var j=0; j<3; ++j) {
++      pos[j] = positions[f[j]];
+     }
+-    var dx = ev.deltaX || 0
+-    var dy = ev.deltaY || 0
+-    var dz = ev.deltaZ || 0
+-    var mode = ev.deltaMode
+-    var scale = 1
+-    switch(mode) {
+-      case 1:
+-        scale = lineHeight
+-      break
+-      case 2:
+-        scale = window.innerHeight
+-      break
++
++    var d01 = new Array(3);
++    var d21 = new Array(3);
++    for(var j=0; j<3; ++j) {
++      d01[j] = pos[1][j] - pos[0][j];
++      d21[j] = pos[2][j] - pos[0][j];
+     }
+-    dx *= scale
+-    dy *= scale
+-    dz *= scale
+-    if(dx || dy || dz) {
+-      return callback(dx, dy, dz)
++
++    var n = new Array(3);
++    var l = 0.0;
++    for(var j=0; j<3; ++j) {
++      var u = (j+1)%3;
++      var v = (j+2)%3;
++      n[j] = d01[u] * d21[v] - d01[v] * d21[u];
++      l += n[j] * n[j];
++    }
++    if(l > epsilon) {
++      l = 1.0 / Math.sqrt(l);
++    } else {
++      l = 0.0;
++    }
++    for(var j=0; j<3; ++j) {
++      n[j] *= l;
+     }
++    normals[i] = n;
+   }
+-  element.addEventListener('wheel', listener)
+-  return listener
++  return normals;
+ }
+ 
+-},{"to-px":210}],212:[function(require,module,exports){
+-"use strict"
+ 
+ 
++},{}],194:[function(require,module,exports){
++'use strict'
+ 
+-var fill = require('cwise/lib/wrapper')({"args":["index","array","scalar"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{_inline_7_arg1_=_inline_7_arg2_.apply(void 0,_inline_7_arg0_)}","args":[{"name":"_inline_7_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_7_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_7_arg2_","lvalue":false,"rvalue":true,"count":1}],"thisVars":[],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
++module.exports = quatFromFrame
+ 
+-module.exports = function(array, f) {
+-  fill(array, f)
+-  return array
++function quatFromFrame(
++  out,
++  rx, ry, rz,
++  ux, uy, uz,
++  fx, fy, fz) {
++  var tr = rx + uy + fz
++  if(l > 0) {
++    var l = Math.sqrt(tr + 1.0)
++    out[0] = 0.5 * (uz - fy) / l
++    out[1] = 0.5 * (fx - rz) / l
++    out[2] = 0.5 * (ry - uy) / l
++    out[3] = 0.5 * l
++  } else {
++    var tf = Math.max(rx, uy, fz)
++    var l = Math.sqrt(2 * tf - tr + 1.0)
++    if(rx >= tf) {
++      //x y z  order
++      out[0] = 0.5 * l
++      out[1] = 0.5 * (ux + ry) / l
++      out[2] = 0.5 * (fx + rz) / l
++      out[3] = 0.5 * (uz - fy) / l
++    } else if(uy >= tf) {
++      //y z x  order
++      out[0] = 0.5 * (ry + ux) / l
++      out[1] = 0.5 * l
++      out[2] = 0.5 * (fy + uz) / l
++      out[3] = 0.5 * (fx - rz) / l
++    } else {
++      //z x y  order
++      out[0] = 0.5 * (rz + fx) / l
++      out[1] = 0.5 * (uz + fy) / l
++      out[2] = 0.5 * l
++      out[3] = 0.5 * (ry - ux) / l
++    }
++  }
++  return out
+ }
+-
+-},{"cwise/lib/wrapper":99}],213:[function(require,module,exports){
++},{}],195:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = invert
++module.exports = createOrbitController
+ 
+-var invert2 = require('gl-mat2/invert')
+-var invert3 = require('gl-mat3/invert')
+-var invert4 = require('gl-mat4/invert')
++var filterVector  = require('filtered-vector')
++var lookAt        = require('gl-mat4/lookAt')
++var mat4FromQuat  = require('gl-mat4/fromQuat')
++var invert44      = require('gl-mat4/invert')
++var quatFromFrame = require('./lib/quatFromFrame')
+ 
+-function invert(out, M) {
+-  switch(M.length) {
+-    case 0:
+-    break
+-    case 1:
+-      out[0] = 1.0 / M[0]
+-    break
+-    case 4:
+-      invert2(out, M)
+-    break
+-    case 9:
+-      invert3(out, M)
+-    break
+-    case 16:
+-      invert4(out, M)
+-    break
+-    default:
+-      throw new Error('currently supports matrices up to 4x4')
+-    break
+-  }
+-  return out
++function len3(x,y,z) {
++  return Math.sqrt(Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
+ }
+-},{"gl-mat2/invert":214,"gl-mat3/invert":113,"gl-mat4/invert":120}],214:[function(require,module,exports){
+-module.exports = invert
+ 
+-/**
+- * Inverts a mat2
+- *
+- * @alias mat2.invert
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-function invert(out, a) {
+-  var a0 = a[0]
+-  var a1 = a[1]
+-  var a2 = a[2]
+-  var a3 = a[3]
+-  var det = a0 * a3 - a2 * a1
++function len4(w,x,y,z) {
++  return Math.sqrt(Math.pow(w,2) + Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
++}
+ 
+-  if (!det) return null
+-  det = 1.0 / det
++function normalize4(out, a) {
++  var ax = a[0]
++  var ay = a[1]
++  var az = a[2]
++  var aw = a[3]
++  var al = len4(ax, ay, az, aw)
++  if(al > 1e-6) {
++    out[0] = ax/al
++    out[1] = ay/al
++    out[2] = az/al
++    out[3] = aw/al
++  } else {
++    out[0] = out[1] = out[2] = 0.0
++    out[3] = 1.0
++  }
++}
+ 
+-  out[0] =  a3 * det
+-  out[1] = -a1 * det
+-  out[2] = -a2 * det
+-  out[3] =  a0 * det
++function OrbitCameraController(initQuat, initCenter, initRadius) {
++  this.radius    = filterVector([initRadius])
++  this.center    = filterVector(initCenter)
++  this.rotation  = filterVector(initQuat)
+ 
+-  return out
++  this.computedRadius   = this.radius.curve(0)
++  this.computedCenter   = this.center.curve(0)
++  this.computedRotation = this.rotation.curve(0)
++  this.computedUp       = [0.1,0,0]
++  this.computedEye      = [0.1,0,0]
++  this.computedMatrix   = [0.1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
++
++  this.recalcMatrix(0)
+ }
+ 
+-},{}],215:[function(require,module,exports){
+-"use strict"
++var proto = OrbitCameraController.prototype
+ 
+-function interp1d(arr, x) {
+-  var ix = Math.floor(x)
+-    , fx = x - ix
+-    , s0 = 0 <= ix   && ix   < arr.shape[0]
+-    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
+-    , w0 = s0 ? +arr.get(ix)   : 0.0
+-    , w1 = s1 ? +arr.get(ix+1) : 0.0
+-  return (1.0-fx)*w0 + fx*w1
++proto.lastT = function() {
++  return Math.max(
++    this.radius.lastT(),
++    this.center.lastT(),
++    this.rotation.lastT())
+ }
+ 
+-function interp2d(arr, x, y) {
+-  var ix = Math.floor(x)
+-    , fx = x - ix
+-    , s0 = 0 <= ix   && ix   < arr.shape[0]
+-    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
+-    , iy = Math.floor(y)
+-    , fy = y - iy
+-    , t0 = 0 <= iy   && iy   < arr.shape[1]
+-    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
+-    , w00 = s0&&t0 ? arr.get(ix  ,iy  ) : 0.0
+-    , w01 = s0&&t1 ? arr.get(ix  ,iy+1) : 0.0
+-    , w10 = s1&&t0 ? arr.get(ix+1,iy  ) : 0.0
+-    , w11 = s1&&t1 ? arr.get(ix+1,iy+1) : 0.0
+-  return (1.0-fy) * ((1.0-fx)*w00 + fx*w10) + fy * ((1.0-fx)*w01 + fx*w11)
+-}
++proto.recalcMatrix = function(t) {
++  this.radius.curve(t)
++  this.center.curve(t)
++  this.rotation.curve(t)
+ 
+-function interp3d(arr, x, y, z) {
+-  var ix = Math.floor(x)
+-    , fx = x - ix
+-    , s0 = 0 <= ix   && ix   < arr.shape[0]
+-    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
+-    , iy = Math.floor(y)
+-    , fy = y - iy
+-    , t0 = 0 <= iy   && iy   < arr.shape[1]
+-    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
+-    , iz = Math.floor(z)
+-    , fz = z - iz
+-    , u0 = 0 <= iz   && iz   < arr.shape[2]
+-    , u1 = 0 <= iz+1 && iz+1 < arr.shape[2]
+-    , w000 = s0&&t0&&u0 ? arr.get(ix,iy,iz)       : 0.0
+-    , w010 = s0&&t1&&u0 ? arr.get(ix,iy+1,iz)     : 0.0
+-    , w100 = s1&&t0&&u0 ? arr.get(ix+1,iy,iz)     : 0.0
+-    , w110 = s1&&t1&&u0 ? arr.get(ix+1,iy+1,iz)   : 0.0
+-    , w001 = s0&&t0&&u1 ? arr.get(ix,iy,iz+1)     : 0.0
+-    , w011 = s0&&t1&&u1 ? arr.get(ix,iy+1,iz+1)   : 0.0
+-    , w101 = s1&&t0&&u1 ? arr.get(ix+1,iy,iz+1)   : 0.0
+-    , w111 = s1&&t1&&u1 ? arr.get(ix+1,iy+1,iz+1) : 0.0
+-  return (1.0-fz) * ((1.0-fy) * ((1.0-fx)*w000 + fx*w100) + fy * ((1.0-fx)*w010 + fx*w110)) + fz * ((1.0-fy) * ((1.0-fx)*w001 + fx*w101) + fy * ((1.0-fx)*w011 + fx*w111))
+-}
++  var quat = this.computedRotation
++  normalize4(quat, quat)
+ 
+-function interpNd(arr) {
+-  var d = arr.shape.length|0
+-    , ix = new Array(d)
+-    , fx = new Array(d)
+-    , s0 = new Array(d)
+-    , s1 = new Array(d)
+-    , i, t
+-  for(i=0; i<d; ++i) {
+-    t = +arguments[i+1]
+-    ix[i] = Math.floor(t)
+-    fx[i] = t - ix[i]
+-    s0[i] = (0 <= ix[i]   && ix[i]   < arr.shape[i])
+-    s1[i] = (0 <= ix[i]+1 && ix[i]+1 < arr.shape[i])
+-  }
+-  var r = 0.0, j, w, idx
+-i_loop:
+-  for(i=0; i<(1<<d); ++i) {
+-    w = 1.0
+-    idx = arr.offset
+-    for(j=0; j<d; ++j) {
+-      if(i & (1<<j)) {
+-        if(!s1[j]) {
+-          continue i_loop
+-        }
+-        w *= fx[j]
+-        idx += arr.stride[j] * (ix[j] + 1)
+-      } else {
+-        if(!s0[j]) {
+-          continue i_loop
+-        }
+-        w *= 1.0 - fx[j]
+-        idx += arr.stride[j] * ix[j]
+-      }
++  var mat = this.computedMatrix
++  mat4FromQuat(mat, quat)
++
++  var center = this.computedCenter
++  var eye    = this.computedEye
++  var up     = this.computedUp
++  var radius = Math.exp(this.computedRadius[0])
++
++  eye[0] = center[0] + radius * mat[2]
++  eye[1] = center[1] + radius * mat[6]
++  eye[2] = center[2] + radius * mat[10]
++  up[0] = mat[1]
++  up[1] = mat[5]
++  up[2] = mat[9]
++
++  for(var i=0; i<3; ++i) {
++    var rr = 0.0
++    for(var j=0; j<3; ++j) {
++      rr += mat[i+4*j] * eye[j]
+     }
+-    r += w * arr.data[idx]
++    mat[12+i] = -rr
+   }
+-  return r
+ }
+ 
+-function interpolate(arr, x, y, z) {
+-  switch(arr.shape.length) {
+-    case 0:
+-      return 0.0
+-    case 1:
+-      return interp1d(arr, x)
+-    case 2:
+-      return interp2d(arr, x, y)
+-    case 3:
+-      return interp3d(arr, x, y, z)
+-    default:
+-      return interpNd.apply(undefined, arguments)
++proto.getMatrix = function(t, result) {
++  this.recalcMatrix(t)
++  var m = this.computedMatrix
++  if(result) {
++    for(var i=0; i<16; ++i) {
++      result[i] = m[i]
++    }
++    return result
+   }
++  return m
++}
++
++proto.idle = function(t) {
++  this.center.idle(t)
++  this.radius.idle(t)
++  this.rotation.idle(t)
+ }
+-module.exports = interpolate
+-module.exports.d1 = interp1d
+-module.exports.d2 = interp2d
+-module.exports.d3 = interp3d
+ 
+-},{}],216:[function(require,module,exports){
+-'use strict'
++proto.flush = function(t) {
++  this.center.flush(t)
++  this.radius.flush(t)
++  this.rotation.flush(t)
++}
+ 
+-var interp  = require('ndarray-linear-interpolate')
++proto.pan = function(t, dx, dy, dz) {
++  dx = dx || 0.0
++  dy = dy || 0.0
++  dz = dz || 0.0
+ 
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
+ 
+-var do_warp = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=new Array(_inline_33_arg4_)}","args":[{"name":"_inline_33_arg0_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_33_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_33_arg2_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_33_arg3_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_33_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_34_arg2_(this_warped,_inline_34_arg0_),_inline_34_arg1_=_inline_34_arg3_.apply(void 0,this_warped)}","args":[{"name":"_inline_34_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_34_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_34_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_34_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_34_arg4_","lvalue":false,"rvalue":false,"count":0}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warpND","blockSize":64})
++  var ux = mat[1]
++  var uy = mat[5]
++  var uz = mat[9]
++  var ul = len3(ux, uy, uz)
++  ux /= ul
++  uy /= ul
++  uz /= ul
+ 
+-var do_warp_1 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_37_arg2_(this_warped,_inline_37_arg0_),_inline_37_arg1_=_inline_37_arg3_(_inline_37_arg4_,this_warped[0])}","args":[{"name":"_inline_37_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_37_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_37_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_37_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_37_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp1D","blockSize":64})
++  var rx = mat[0]
++  var ry = mat[4]
++  var rz = mat[8]
++  var ru = rx * ux + ry * uy + rz * uz
++  rx -= ux * ru
++  ry -= uy * ru
++  rz -= uz * ru
++  var rl = len3(rx, ry, rz)
++  rx /= rl
++  ry /= rl
++  rz /= rl
+ 
+-var do_warp_2 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_40_arg2_(this_warped,_inline_40_arg0_),_inline_40_arg1_=_inline_40_arg3_(_inline_40_arg4_,this_warped[0],this_warped[1])}","args":[{"name":"_inline_40_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_40_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_40_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_40_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_40_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp2D","blockSize":64})
++  var fx = mat[2]
++  var fy = mat[6]
++  var fz = mat[10]
++  var fu = fx * ux + fy * uy + fz * uz
++  var fr = fx * rx + fy * ry + fz * rz
++  fx -= fu * ux + fr * rx
++  fy -= fu * uy + fr * ry
++  fz -= fu * uz + fr * rz
++  var fl = len3(fx, fy, fz)
++  fx /= fl
++  fy /= fl
++  fz /= fl
+ 
+-var do_warp_3 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_43_arg2_(this_warped,_inline_43_arg0_),_inline_43_arg1_=_inline_43_arg3_(_inline_43_arg4_,this_warped[0],this_warped[1],this_warped[2])}","args":[{"name":"_inline_43_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_43_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_43_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_43_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_43_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp3D","blockSize":64})
++  var vx = rx * dx + ux * dy
++  var vy = ry * dx + uy * dy
++  var vz = rz * dx + uz * dy
+ 
+-module.exports = function warp(dest, src, func) {
+-  switch(src.shape.length) {
+-    case 1:
+-      do_warp_1(dest, func, interp.d1, src)
+-      break
+-    case 2:
+-      do_warp_2(dest, func, interp.d2, src)
+-      break
+-    case 3:
+-      do_warp_3(dest, func, interp.d3, src)
+-      break
+-    default:
+-      do_warp(dest, func, interp.bind(undefined, src), src.shape.length)
+-      break
+-  }
+-  return dest
++  this.center.move(t, vx, vy, vz)
++
++  //Update z-component of radius
++  var radius = Math.exp(this.computedRadius[0])
++  radius = Math.max(1e-4, radius + dz)
++  this.radius.set(t, Math.log(radius))
+ }
+ 
+-},{"cwise/lib/wrapper":99,"ndarray-linear-interpolate":215}],217:[function(require,module,exports){
+-'use strict'
++proto.rotate = function(t, dx, dy, dz) {
++  this.recalcMatrix(t)
+ 
+-var warp = require('ndarray-warp')
+-var invert = require('gl-matrix-invert')
++  dx = dx||0.0
++  dy = dy||0.0
+ 
+-module.exports = applyHomography
++  var mat = this.computedMatrix
+ 
+-function applyHomography(dest, src, Xi) {
+-  var n = src.dimension
+-  var X = invert([], Xi)
+-  warp(dest, src, function(out_c, inp_c) {
+-    for(var i=0; i<n; ++i) {
+-      out_c[i] = X[(n+1)*n + i]
+-      for(var j=0; j<n; ++j) {
+-        out_c[i] += X[(n+1)*j+i] * inp_c[j]
+-      }
+-    }
+-    var w = X[(n+1)*(n+1)-1]
+-    for(var j=0; j<n; ++j) {
+-      w += X[(n+1)*j+n] * inp_c[j]
+-    }
+-    var wr = 1.0 / w
+-    for(var i=0; i<n; ++i) {
+-      out_c[i] *= wr
+-    }
+-    return out_c
+-  })
+-  return dest
+-}
+-},{"gl-matrix-invert":213,"ndarray-warp":216}],218:[function(require,module,exports){
+-"use strict"
++  var rx = mat[0]
++  var ry = mat[4]
++  var rz = mat[8]
+ 
+-var compile = require("cwise-compiler")
++  var ux = mat[1]
++  var uy = mat[5]
++  var uz = mat[9]
+ 
+-var EmptyProc = {
+-  body: "",
+-  args: [],
+-  thisVars: [],
+-  localVars: []
+-}
++  var fx = mat[2]
++  var fy = mat[6]
++  var fz = mat[10]
+ 
+-function fixup(x) {
+-  if(!x) {
+-    return EmptyProc
+-  }
+-  for(var i=0; i<x.args.length; ++i) {
+-    var a = x.args[i]
+-    if(i === 0) {
+-      x.args[i] = {name: a, lvalue:true, rvalue: !!x.rvalue, count:x.count||1 }
+-    } else {
+-      x.args[i] = {name: a, lvalue:false, rvalue:true, count: 1}
+-    }
++  var qx = dx * rx + dy * ux
++  var qy = dx * ry + dy * uy
++  var qz = dx * rz + dy * uz
++
++  var bx = -(fy * qz - fz * qy)
++  var by = -(fz * qx - fx * qz)
++  var bz = -(fx * qy - fy * qx)  
++  var bw = Math.sqrt(Math.max(0.0, 1.0 - Math.pow(bx,2) - Math.pow(by,2) - Math.pow(bz,2)))
++  var bl = len4(bx, by, bz, bw)
++  if(bl > 1e-6) {
++    bx /= bl
++    by /= bl
++    bz /= bl
++    bw /= bl
++  } else {
++    bx = by = bz = 0.0
++    bw = 1.0
+   }
+-  if(!x.thisVars) {
+-    x.thisVars = []
++
++  var rotation = this.computedRotation
++  var ax = rotation[0]
++  var ay = rotation[1]
++  var az = rotation[2]
++  var aw = rotation[3]
++
++  var cx = ax*bw + aw*bx + ay*bz - az*by
++  var cy = ay*bw + aw*by + az*bx - ax*bz
++  var cz = az*bw + aw*bz + ax*by - ay*bx
++  var cw = aw*bw - ax*bx - ay*by - az*bz
++  
++  //Apply roll
++  if(dz) {
++    bx = fx
++    by = fy
++    bz = fz
++    var s = Math.sin(dz) / len3(bx, by, bz)
++    bx *= s
++    by *= s
++    bz *= s
++    bw = Math.cos(dx)
++    cx = cx*bw + cw*bx + cy*bz - cz*by
++    cy = cy*bw + cw*by + cz*bx - cx*bz
++    cz = cz*bw + cw*bz + cx*by - cy*bx
++    cw = cw*bw - cx*bx - cy*by - cz*bz
+   }
+-  if(!x.localVars) {
+-    x.localVars = []
++
++  var cl = len4(cx, cy, cz, cw)
++  if(cl > 1e-6) {
++    cx /= cl
++    cy /= cl
++    cz /= cl
++    cw /= cl
++  } else {
++    cx = cy = cz = 0.0
++    cw = 1.0
+   }
+-  return x
+-}
+ 
+-function pcompile(user_args) {
+-  return compile({
+-    args:     user_args.args,
+-    pre:      fixup(user_args.pre),
+-    body:     fixup(user_args.body),
+-    post:     fixup(user_args.proc),
+-    funcName: user_args.funcName
+-  })
++  this.rotation.set(t, cx, cy, cz, cw)
+ }
+ 
+-function makeOp(user_args) {
+-  var args = []
+-  for(var i=0; i<user_args.args.length; ++i) {
+-    args.push("a"+i)
++proto.lookAt = function(t, eye, center, up) {
++  this.recalcMatrix(t)
++
++  center = center || this.computedCenter
++  eye    = eye    || this.computedEye
++  up     = up     || this.computedUp
++
++  var mat = this.computedMatrix
++  lookAt(mat, eye, center, up)
++
++  var rotation = this.computedRotation
++  quatFromFrame(rotation,
++    mat[0], mat[1], mat[2],
++    mat[4], mat[5], mat[6],
++    mat[8], mat[9], mat[10])
++  normalize4(rotation, rotation)
++  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
++
++  var fl = 0.0
++  for(var i=0; i<3; ++i) {
++    fl += Math.pow(center[i] - eye[i], 2)
+   }
+-  var wrapper = new Function("P", [
+-    "return function ", user_args.funcName, "_ndarrayops(", args.join(","), ") {P(", args.join(","), ");return a0}"
+-  ].join(""))
+-  return wrapper(pcompile(user_args))
+-}
++  this.radius.set(t, 0.5 * Math.log(Math.max(fl, 1e-6)))
+ 
+-var assign_ops = {
+-  add:  "+",
+-  sub:  "-",
+-  mul:  "*",
+-  div:  "/",
+-  mod:  "%",
+-  band: "&",
+-  bor:  "|",
+-  bxor: "^",
+-  lshift: "<<",
+-  rshift: ">>",
+-  rrshift: ">>>"
++  this.center.set(t, center[0], center[1], center[2])
+ }
+-;(function(){
+-  for(var id in assign_ops) {
+-    var op = assign_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array","array","array"],
+-      body: {args:["a","b","c"],
+-             body: "a=b"+op+"c"},
+-      funcName: id
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array","array"],
+-      body: {args:["a","b"],
+-             body:"a"+op+"=b"},
+-      rvalue: true,
+-      funcName: id+"eq"
+-    })
+-    exports[id+"s"] = makeOp({
+-      args: ["array", "array", "scalar"],
+-      body: {args:["a","b","s"],
+-             body:"a=b"+op+"s"},
+-      funcName: id+"s"
+-    })
+-    exports[id+"seq"] = makeOp({
+-      args: ["array","scalar"],
+-      body: {args:["a","s"],
+-             body:"a"+op+"=s"},
+-      rvalue: true,
+-      funcName: id+"seq"
+-    })
+-  }
+-})();
+ 
+-var unary_ops = {
+-  not: "!",
+-  bnot: "~",
+-  neg: "-",
+-  recip: "1.0/"
++proto.translate = function(t, dx, dy, dz) {
++  this.center.move(t,
++    dx||0.0,
++    dy||0.0,
++    dz||0.0)
+ }
+-;(function(){
+-  for(var id in unary_ops) {
+-    var op = unary_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array", "array"],
+-      body: {args:["a","b"],
+-             body:"a="+op+"b"},
+-      funcName: id
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array"],
+-      body: {args:["a"],
+-             body:"a="+op+"a"},
+-      rvalue: true,
+-      count: 2,
+-      funcName: id+"eq"
+-    })
+-  }
+-})();
+ 
+-var binary_ops = {
+-  and: "&&",
+-  or: "||",
+-  eq: "===",
+-  neq: "!==",
+-  lt: "<",
+-  gt: ">",
+-  leq: "<=",
+-  geq: ">="
++proto.setMatrix = function(t, matrix) {
++
++  var rotation = this.computedRotation
++  quatFromFrame(rotation,
++    matrix[0], matrix[1], matrix[2],
++    matrix[4], matrix[5], matrix[6],
++    matrix[8], matrix[9], matrix[10])
++  normalize4(rotation, rotation)
++  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
++
++  var mat = this.computedMatrix
++  invert44(mat, matrix)
++  var w = mat[15]
++  if(Math.abs(w) > 1e-6) {
++    var cx = mat[12]/w
++    var cy = mat[13]/w
++    var cz = mat[14]/w
++
++    this.recalcMatrix(t)  
++    var r = Math.exp(this.computedRadius[0])
++    this.center.set(t, cx-mat[2]*r, cy-mat[6]*r, cz-mat[10]*r)
++    this.radius.idle(t)
++  } else {
++    this.center.idle(t)
++    this.radius.idle(t)
++  }
+ }
+-;(function() {
+-  for(var id in binary_ops) {
+-    var op = binary_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array","array","array"],
+-      body: {args:["a", "b", "c"],
+-             body:"a=b"+op+"c"},
+-      funcName: id
+-    })
+-    exports[id+"s"] = makeOp({
+-      args: ["array","array","scalar"],
+-      body: {args:["a", "b", "s"],
+-             body:"a=b"+op+"s"},
+-      funcName: id+"s"
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array", "array"],
+-      body: {args:["a", "b"],
+-             body:"a=a"+op+"b"},
+-      rvalue:true,
+-      count:2,
+-      funcName: id+"eq"
+-    })
+-    exports[id+"seq"] = makeOp({
+-      args: ["array", "scalar"],
+-      body: {args:["a","s"],
+-             body:"a=a"+op+"s"},
+-      rvalue:true,
+-      count:2,
+-      funcName: id+"seq"
+-    })
++
++proto.setDistance = function(t, d) {
++  if(d > 0) {
++    this.radius.set(t, Math.log(d))
+   }
+-})();
++}
+ 
+-var math_unary = [
+-  "abs",
+-  "acos",
+-  "asin",
+-  "atan",
+-  "ceil",
+-  "cos",
+-  "exp",
+-  "floor",
+-  "log",
+-  "round",
+-  "sin",
+-  "sqrt",
+-  "tan"
+-]
+-;(function() {
+-  for(var i=0; i<math_unary.length; ++i) {
+-    var f = math_unary[i]
+-    exports[f] = makeOp({
+-                    args: ["array", "array"],
+-                    pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                    body: {args:["a","b"], body:"a=this_f(b)", thisVars:["this_f"]},
+-                    funcName: f
+-                  })
+-    exports[f+"eq"] = makeOp({
+-                      args: ["array"],
+-                      pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                      body: {args: ["a"], body:"a=this_f(a)", thisVars:["this_f"]},
+-                      rvalue: true,
+-                      count: 2,
+-                      funcName: f+"eq"
+-                    })
++proto.setDistanceLimits = function(lo, hi) {
++  if(lo > 0) {
++    lo = Math.log(lo)
++  } else {
++    lo = -Infinity    
+   }
+-})();
++  if(hi > 0) {
++    hi = Math.log(hi)
++  } else {
++    hi = Infinity
++  }
++  hi = Math.max(hi, lo)
++  this.radius.bounds[0][0] = lo
++  this.radius.bounds[1][0] = hi
++}
+ 
+-var math_comm = [
+-  "max",
+-  "min",
+-  "atan2",
+-  "pow"
+-]
+-;(function(){
+-  for(var i=0; i<math_comm.length; ++i) {
+-    var f= math_comm[i]
+-    exports[f] = makeOp({
+-                  args:["array", "array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
+-                  funcName: f
+-                })
+-    exports[f+"s"] = makeOp({
+-                  args:["array", "array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
+-                  funcName: f+"s"
+-                  })
+-    exports[f+"eq"] = makeOp({ args:["array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
+-                  rvalue: true,
+-                  count: 2,
+-                  funcName: f+"eq"
+-                  })
+-    exports[f+"seq"] = makeOp({ args:["array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
+-                  rvalue:true,
+-                  count:2,
+-                  funcName: f+"seq"
+-                  })
++proto.getDistanceLimits = function(out) {
++  var bounds = this.radius.bounds
++  if(out) {
++    out[0] = Math.exp(bounds[0][0])
++    out[1] = Math.exp(bounds[1][0])
++    return out
+   }
+-})();
++  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
++}
+ 
+-var math_noncomm = [
+-  "atan2",
+-  "pow"
+-]
+-;(function(){
+-  for(var i=0; i<math_noncomm.length; ++i) {
+-    var f= math_noncomm[i]
+-    exports[f+"op"] = makeOp({
+-                  args:["array", "array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
+-                  funcName: f+"op"
+-                })
+-    exports[f+"ops"] = makeOp({
+-                  args:["array", "array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
+-                  funcName: f+"ops"
+-                  })
+-    exports[f+"opeq"] = makeOp({ args:["array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
+-                  rvalue: true,
+-                  count: 2,
+-                  funcName: f+"opeq"
+-                  })
+-    exports[f+"opseq"] = makeOp({ args:["array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
+-                  rvalue:true,
+-                  count:2,
+-                  funcName: f+"opseq"
+-                  })
++proto.toJSON = function() {
++  this.recalcMatrix(this.lastT())
++  return {
++    center:   this.computedCenter.slice(),
++    rotation: this.computedRotation.slice(),
++    distance: Math.log(this.computedRadius[0]),
++    zoomMin:  this.radius.bounds[0][0],
++    zoomMax:  this.radius.bounds[1][0]
+   }
+-})();
++}
+ 
+-exports.any = compile({
+-  args:["array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "if(a){return true}", localVars: [], thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return false"},
+-  funcName: "any"
+-})
++proto.fromJSON = function(options) {
++  var t = this.lastT()
++  var c = options.center
++  if(c) {
++    this.center.set(t, c[0], c[1], c[2])
++  }
++  var r = options.rotation
++  if(r) {
++    this.rotation.set(t, r[0], r[1], r[2], r[3])
++  }
++  var d = options.distance
++  if(d && d > 0) {
++    this.radius.set(t, Math.log(d))
++  }
++  this.setDistanceLimits(options.zoomMin, options.zoomMax)
++}
+ 
+-exports.all = compile({
+-  args:["array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1}], body: "if(!x){return false}", localVars: [], thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return true"},
+-  funcName: "all"
+-})
++function createOrbitController(options) {
++  options = options || {}
++  var center   = options.center   || [0,0,0]
++  var rotation = options.rotation || [0,0,0,1]
++  var radius   = options.radius   || 1.0
+ 
+-exports.sum = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s+=a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "sum"
+-})
++  center = [].slice.call(center, 0, 3)
++  rotation = [].slice.call(rotation, 0, 4)
++  normalize4(rotation, rotation)
+ 
+-exports.prod = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=1"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s*=a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "prod"
+-})
++  var result = new OrbitCameraController(
++    rotation,
++    center,
++    Math.log(radius))
+ 
+-exports.norm2squared = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norm2squared"
+-})
+-  
+-exports.norm2 = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return Math.sqrt(this_s)"},
+-  funcName: "norm2"
+-})
+-  
++  result.setDistanceLimits(options.zoomMin, options.zoomMax)
+ 
+-exports.norminf = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:4}], body:"if(-a>this_s){this_s=-a}else if(a>this_s){this_s=a}", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norminf"
+-})
++  if('eye' in options || 'up' in options) {
++    result.lookAt(0, options.eye, options.center, options.up)
++  }
+ 
+-exports.norm1 = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:3}], body: "this_s+=a<0?-a:a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norm1"
+-})
++  return result
++}
++},{"./lib/quatFromFrame":194,"filtered-vector":83,"gl-mat4/fromQuat":108,"gl-mat4/invert":111,"gl-mat4/lookAt":112}],196:[function(require,module,exports){
++/*!
++ * pad-left <https://github.com/jonschlinkert/pad-left>
++ *
++ * Copyright (c) 2014-2015, Jon Schlinkert.
++ * Licensed under the MIT license.
++ */
+ 
+-exports.sup = compile({
+-  args: [ "array" ],
+-  pre:
+-   { body: "this_h=-Infinity",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  body:
+-   { body: "if(_inline_1_arg0_>this_h)this_h=_inline_1_arg0_",
+-     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  post:
+-   { body: "return this_h",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] }
+- })
++'use strict';
+ 
+-exports.inf = compile({
+-  args: [ "array" ],
+-  pre:
+-   { body: "this_h=Infinity",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  body:
+-   { body: "if(_inline_1_arg0_<this_h)this_h=_inline_1_arg0_",
+-     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  post:
+-   { body: "return this_h",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] }
+- })
++var repeat = require('repeat-string');
+ 
+-exports.argmin = compile({
+-  args:["index","array","shape"],
+-  pre:{
+-    body:"{this_v=Infinity;this_i=_inline_0_arg2_.slice(0)}",
+-    args:[
+-      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
+-      ],
+-    thisVars:["this_i","this_v"],
+-    localVars:[]},
+-  body:{
+-    body:"{if(_inline_1_arg1_<this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
+-    args:[
+-      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
+-      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
+-    thisVars:["this_i","this_v"],
+-    localVars:["_inline_1_k"]},
+-  post:{
+-    body:"{return this_i}",
+-    args:[],
+-    thisVars:["this_i"],
+-    localVars:[]}
+-})
++module.exports = function padLeft(str, num, ch) {
++  ch = typeof ch !== 'undefined' ? (ch + '') : ' ';
++  return repeat(ch, num) + str;
++};
++},{"repeat-string":212}],197:[function(require,module,exports){
++module.exports = function parseUnit(str, out) {
++    if (!out)
++        out = [ 0, '' ]
+ 
+-exports.argmax = compile({
+-  args:["index","array","shape"],
+-  pre:{
+-    body:"{this_v=-Infinity;this_i=_inline_0_arg2_.slice(0)}",
+-    args:[
+-      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
+-      ],
+-    thisVars:["this_i","this_v"],
+-    localVars:[]},
+-  body:{
+-    body:"{if(_inline_1_arg1_>this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
+-    args:[
+-      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
+-      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
+-    thisVars:["this_i","this_v"],
+-    localVars:["_inline_1_k"]},
+-  post:{
+-    body:"{return this_i}",
+-    args:[],
+-    thisVars:["this_i"],
+-    localVars:[]}
+-})  
++    str = String(str)
++    var num = parseFloat(str, 10)
++    out[0] = num
++    out[1] = str.match(/[\d.\-\+]*\s*(.*)/)[1] || ''
++    return out
++}
++},{}],198:[function(require,module,exports){
++"use strict"
+ 
+-exports.random = makeOp({
+-  args: ["array"],
+-  pre: {args:[], body:"this_f=Math.random", thisVars:["this_f"]},
+-  body: {args: ["a"], body:"a=this_f()", thisVars:["this_f"]},
+-  funcName: "random"
+-})
++module.exports = permutationSign
+ 
+-exports.assign = makeOp({
+-  args:["array", "array"],
+-  body: {args:["a", "b"], body:"a=b"},
+-  funcName: "assign" })
++var BRUTE_FORCE_CUTOFF = 32
+ 
+-exports.assigns = makeOp({
+-  args:["array", "scalar"],
+-  body: {args:["a", "b"], body:"a=b"},
+-  funcName: "assigns" })
++var pool = require("typedarray-pool")
++
++function permutationSign(p) {
++  var n = p.length
++  if(n < BRUTE_FORCE_CUTOFF) {
++    //Use quadratic algorithm for small n
++    var sgn = 1
++    for(var i=0; i<n; ++i) {
++      for(var j=0; j<i; ++j) {
++        if(p[i] < p[j]) {
++          sgn = -sgn
++        } else if(p[i] === p[j]) {
++          return 0
++        }
++      }
++    }
++    return sgn
++  } else {
++    //Otherwise use linear time algorithm
++    var visited = pool.mallocUint8(n)
++    for(var i=0; i<n; ++i) {
++      visited[i] = 0
++    }
++    var sgn = 1
++    for(var i=0; i<n; ++i) {
++      if(!visited[i]) {
++        var count = 1
++        visited[i] = 1
++        for(var j=p[i]; j!==i; j=p[j]) {
++          if(visited[j]) {
++            pool.freeUint8(visited)
++            return 0
++          }
++          count += 1
++          visited[j] = 1
++        }
++        if(!(count & 1)) {
++          sgn = -sgn
++        }
++      }
++    }
++    pool.freeUint8(visited)
++    return sgn
++  }
++}
++},{"typedarray-pool":246}],199:[function(require,module,exports){
++"use strict"
+ 
++var pool = require("typedarray-pool")
++var inverse = require("invert-permutation")
+ 
+-exports.equals = compile({
+-  args:["array", "array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1},
+-               {name:"y", lvalue:false, rvalue:true, count:1}], 
+-        body: "if(x!==y){return false}", 
+-        localVars: [], 
+-        thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return true"},
+-  funcName: "equals"
+-})
++function rank(permutation) {
++  var n = permutation.length
++  switch(n) {
++    case 0:
++    case 1:
++      return 0
++    case 2:
++      return permutation[1]
++    default:
++      break
++  }
++  var p = pool.mallocUint32(n)
++  var pinv = pool.mallocUint32(n)
++  var r = 0, s, t, i
++  inverse(permutation, pinv)
++  for(i=0; i<n; ++i) {
++    p[i] = permutation[i]
++  }
++  for(i=n-1; i>0; --i) {
++    t = pinv[i]
++    s = p[i]
++    p[i] = p[t]
++    p[t] = s
++    pinv[i] = pinv[s]
++    pinv[s] = t
++    r = (r + s) * i
++  }
++  pool.freeUint32(pinv)
++  pool.freeUint32(p)
++  return r
++}
++
++function unrank(n, r, p) {
++  switch(n) {
++    case 0:
++      if(p) { return p }
++      return []
++    case 1:
++      if(p) {
++        p[0] = 0
++        return p
++      } else {
++        return [0]
++      }
++    case 2:
++      if(p) {
++        if(r) {
++          p[0] = 0
++          p[1] = 1
++        } else {
++          p[0] = 1
++          p[1] = 0
++        }
++        return p
++      } else {
++        return r ? [0,1] : [1,0]
++      }
++    default:
++      break
++  }
++  p = p || new Array(n)
++  var s, t, i, nf=1
++  p[0] = 0
++  for(i=1; i<n; ++i) {
++    p[i] = i
++    nf = (nf*i)|0
++  }
++  for(i=n-1; i>0; --i) {
++    s = (r / nf)|0
++    r = (r - s * nf)|0
++    nf = (nf / i)|0
++    t = p[i]|0
++    p[i] = p[s]|0
++    p[s] = t|0
++  }
++  return p
++}
+ 
++exports.rank = rank
++exports.unrank = unrank
+ 
++},{"invert-permutation":167,"typedarray-pool":246}],200:[function(require,module,exports){
++"use strict"
+ 
+-},{"cwise-compiler":96}],219:[function(require,module,exports){
+-var iota = require("iota-array")
+-var isBuffer = require("is-buffer")
++module.exports = planarDual
+ 
+-var hasTypedArrays  = ((typeof Float64Array) !== "undefined")
++var compareAngle = require("compare-angle")
+ 
+-function compare1st(a, b) {
+-  return a[0] - b[0]
+-}
++function planarDual(cells, positions) {
+ 
+-function order() {
+-  var stride = this.stride
+-  var terms = new Array(stride.length)
+-  var i
+-  for(i=0; i<terms.length; ++i) {
+-    terms[i] = [Math.abs(stride[i]), i]
++  var numVertices = positions.length|0
++  var numEdges = cells.length
++  var adj = [new Array(numVertices), new Array(numVertices)]
++  for(var i=0; i<numVertices; ++i) {
++    adj[0][i] = []
++    adj[1][i] = []
+   }
+-  terms.sort(compare1st)
+-  var result = new Array(terms.length)
+-  for(i=0; i<result.length; ++i) {
+-    result[i] = terms[i][1]
++  for(var i=0; i<numEdges; ++i) {
++    var c = cells[i]
++    adj[0][c[0]].push(c)
++    adj[1][c[1]].push(c)
+   }
+-  return result
+-}
+ 
+-function compileConstructor(dtype, dimension) {
+-  var className = ["View", dimension, "d", dtype].join("")
+-  if(dimension < 0) {
+-    className = "View_Nil" + dtype
+-  }
+-  var useGetters = (dtype === "generic")
++  var cycles = []
+ 
+-  if(dimension === -1) {
+-    //Special case for trivial arrays
+-    var code =
+-      "function "+className+"(a){this.data=a;};\
+-var proto="+className+".prototype;\
+-proto.dtype='"+dtype+"';\
+-proto.index=function(){return -1};\
+-proto.size=0;\
+-proto.dimension=-1;\
+-proto.shape=proto.stride=proto.order=[];\
+-proto.lo=proto.hi=proto.transpose=proto.step=\
+-function(){return new "+className+"(this.data);};\
+-proto.get=proto.set=function(){};\
+-proto.pick=function(){return null};\
+-return function construct_"+className+"(a){return new "+className+"(a);}"
+-    var procedure = new Function(code)
+-    return procedure()
+-  } else if(dimension === 0) {
+-    //Special case for 0d arrays
+-    var code =
+-      "function "+className+"(a,d) {\
+-this.data = a;\
+-this.offset = d\
+-};\
+-var proto="+className+".prototype;\
+-proto.dtype='"+dtype+"';\
+-proto.index=function(){return this.offset};\
+-proto.dimension=0;\
+-proto.size=1;\
+-proto.shape=\
+-proto.stride=\
+-proto.order=[];\
+-proto.lo=\
+-proto.hi=\
+-proto.transpose=\
+-proto.step=function "+className+"_copy() {\
+-return new "+className+"(this.data,this.offset)\
+-};\
+-proto.pick=function "+className+"_pick(){\
+-return TrivialArray(this.data);\
+-};\
+-proto.valueOf=proto.get=function "+className+"_get(){\
+-return "+(useGetters ? "this.data.get(this.offset)" : "this.data[this.offset]")+
+-"};\
+-proto.set=function "+className+"_set(v){\
+-return "+(useGetters ? "this.data.set(this.offset,v)" : "this.data[this.offset]=v")+"\
+-};\
+-return function construct_"+className+"(a,b,c,d){return new "+className+"(a,d)}"
+-    var procedure = new Function("TrivialArray", code)
+-    return procedure(CACHED_CONSTRUCTORS[dtype][0])
++  //Add isolated vertices as trivial case
++  for(var i=0; i<numVertices; ++i) {
++    if(adj[0][i].length + adj[1][i].length === 0) {
++      cycles.push( [i] )
++    }
+   }
+ 
+-  var code = ["'use strict'"]
++  //Remove a half edge
++  function cut(c, i) {
++    var a = adj[i][c[i]]
++    a.splice(a.indexOf(c), 1)
++  }
+ 
+-  //Create constructor for view
+-  var indices = iota(dimension)
+-  var args = indices.map(function(i) { return "i"+i })
+-  var index_str = "this.offset+" + indices.map(function(i) {
+-        return "this.stride[" + i + "]*i" + i
+-      }).join("+")
+-  var shapeArg = indices.map(function(i) {
+-      return "b"+i
+-    }).join(",")
+-  var strideArg = indices.map(function(i) {
+-      return "c"+i
+-    }).join(",")
+-  code.push(
+-    "function "+className+"(a," + shapeArg + "," + strideArg + ",d){this.data=a",
+-      "this.shape=[" + shapeArg + "]",
+-      "this.stride=[" + strideArg + "]",
+-      "this.offset=d|0}",
+-    "var proto="+className+".prototype",
+-    "proto.dtype='"+dtype+"'",
+-    "proto.dimension="+dimension)
++  //Find next vertex and cut edge
++  function next(a, b, noCut) {
++    var nextCell, nextVertex, nextDir
++    for(var i=0; i<2; ++i) {
++      if(adj[i][b].length > 0) {
++        nextCell = adj[i][b][0]
++        nextDir = i
++        break
++      }
++    }
++    nextVertex = nextCell[nextDir^1]
+ 
+-  //view.size:
+-  code.push("Object.defineProperty(proto,'size',{get:function "+className+"_size(){\
+-return "+indices.map(function(i) { return "this.shape["+i+"]" }).join("*"),
+-"}})")
++    for(var dir=0; dir<2; ++dir) {
++      var nbhd = adj[dir][b]
++      for(var k=0; k<nbhd.length; ++k) {
++        var e = nbhd[k]
++        var p = e[dir^1]
++        var cmp = compareAngle(
++            positions[a], 
++            positions[b], 
++            positions[nextVertex],
++            positions[p])
++        if(cmp > 0) {
++          nextCell = e
++          nextVertex = p
++          nextDir = dir
++        }
++      }
++    }
++    if(noCut) {
++      return nextVertex
++    }
++    if(nextCell) {
++      cut(nextCell, nextDir)
++    }
++    return nextVertex
++  }
+ 
+-  //view.order:
+-  if(dimension === 1) {
+-    code.push("proto.order=[0]")
+-  } else {
+-    code.push("Object.defineProperty(proto,'order',{get:")
+-    if(dimension < 4) {
+-      code.push("function "+className+"_order(){")
+-      if(dimension === 2) {
+-        code.push("return (Math.abs(this.stride[0])>Math.abs(this.stride[1]))?[1,0]:[0,1]}})")
+-      } else if(dimension === 3) {
+-        code.push(
+-"var s0=Math.abs(this.stride[0]),s1=Math.abs(this.stride[1]),s2=Math.abs(this.stride[2]);\
+-if(s0>s1){\
+-if(s1>s2){\
+-return [2,1,0];\
+-}else if(s0>s2){\
+-return [1,2,0];\
+-}else{\
+-return [1,0,2];\
+-}\
+-}else if(s0>s2){\
+-return [2,0,1];\
+-}else if(s2>s1){\
+-return [0,1,2];\
+-}else{\
+-return [0,2,1];\
+-}}})")
++  function extractCycle(v, dir) {
++    var e0 = adj[dir][v][0]
++    var cycle = [v]
++    cut(e0, dir)
++    var u = e0[dir^1]
++    var d0 = dir
++    while(true) {
++      while(u !== v) {
++        cycle.push(u)
++        u = next(cycle[cycle.length-2], u, false)
+       }
+-    } else {
+-      code.push("ORDER})")
++      if(adj[0][v].length + adj[1][v].length === 0) {
++        break
++      }
++      var a = cycle[cycle.length-1]
++      var b = v
++      var c = cycle[1]
++      var d = next(a, b, true)
++      if(compareAngle(positions[a], positions[b], positions[c], positions[d]) < 0) {
++        break
++      }
++      cycle.push(v)
++      u = next(a, b)
+     }
++    return cycle
+   }
+ 
+-  //view.set(i0, ..., v):
+-  code.push(
+-"proto.set=function "+className+"_set("+args.join(",")+",v){")
+-  if(useGetters) {
+-    code.push("return this.data.set("+index_str+",v)}")
+-  } else {
+-    code.push("return this.data["+index_str+"]=v}")
++  function shouldGlue(pcycle, ncycle) {
++    return (ncycle[1] === ncycle[ncycle.length-1])
+   }
+ 
+-  //view.get(i0, ...):
+-  code.push("proto.get=function "+className+"_get("+args.join(",")+"){")
+-  if(useGetters) {
+-    code.push("return this.data.get("+index_str+")}")
+-  } else {
+-    code.push("return this.data["+index_str+"]}")
++  for(var i=0; i<numVertices; ++i) {
++    for(var j=0; j<2; ++j) {
++      var pcycle = []
++      while(adj[j][i].length > 0) {
++        var ni = adj[0][i].length
++        var ncycle = extractCycle(i,j)
++        if(shouldGlue(pcycle, ncycle)) {
++          //Glue together trivial cycles
++          pcycle.push.apply(pcycle, ncycle)
++        } else {
++          if(pcycle.length > 0) {
++            cycles.push(pcycle)
++          }
++          pcycle = ncycle
++        }
++      }
++      if(pcycle.length > 0) {
++        cycles.push(pcycle)
++      }
++    }
+   }
+ 
+-  //view.index:
+-  code.push(
+-    "proto.index=function "+className+"_index(", args.join(), "){return "+index_str+"}")
++  //Combine paths and loops together
++  return cycles
++}
++},{"compare-angle":62}],201:[function(require,module,exports){
++'use strict'
+ 
+-  //view.hi():
+-  code.push("proto.hi=function "+className+"_hi("+args.join(",")+"){return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return ["(typeof i",i,"!=='number'||i",i,"<0)?this.shape[", i, "]:i", i,"|0"].join("")
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "this.stride["+i + "]"
+-    }).join(",")+",this.offset)}")
++module.exports = trimLeaves
+ 
+-  //view.lo():
+-  var a_vars = indices.map(function(i) { return "a"+i+"=this.shape["+i+"]" })
+-  var c_vars = indices.map(function(i) { return "c"+i+"=this.stride["+i+"]" })
+-  code.push("proto.lo=function "+className+"_lo("+args.join(",")+"){var b=this.offset,d=0,"+a_vars.join(",")+","+c_vars.join(","))
+-  for(var i=0; i<dimension; ++i) {
+-    code.push(
+-"if(typeof i"+i+"==='number'&&i"+i+">=0){\
+-d=i"+i+"|0;\
+-b+=c"+i+"*d;\
+-a"+i+"-=d}")
++var e2a = require('edges-to-adjacency-list')
++
++function trimLeaves(edges, positions) {
++  var adj = e2a(edges, positions.length)
++  var live = new Array(positions.length)
++  var nbhd = new Array(positions.length)
++
++  var dead = []
++  for(var i=0; i<positions.length; ++i) {
++    var count = adj[i].length
++    nbhd[i] = count
++    live[i] = true
++    if(count <= 1) {
++      dead.push(i)
++    }
+   }
+-  code.push("return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return "a"+i
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "c"+i
+-    }).join(",")+",b)}")
+ 
+-  //view.step():
+-  code.push("proto.step=function "+className+"_step("+args.join(",")+"){var "+
+-    indices.map(function(i) {
+-      return "a"+i+"=this.shape["+i+"]"
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "b"+i+"=this.stride["+i+"]"
+-    }).join(",")+",c=this.offset,d=0,ceil=Math.ceil")
+-  for(var i=0; i<dimension; ++i) {
+-    code.push(
+-"if(typeof i"+i+"==='number'){\
+-d=i"+i+"|0;\
+-if(d<0){\
+-c+=b"+i+"*(a"+i+"-1);\
+-a"+i+"=ceil(-a"+i+"/d)\
+-}else{\
+-a"+i+"=ceil(a"+i+"/d)\
+-}\
+-b"+i+"*=d\
+-}")
++  while(dead.length > 0) {
++    var v = dead.pop()
++    live[v] = false
++    var n = adj[v]
++    for(var i=0; i<n.length; ++i) {
++      var u = n[i]
++      if(--nbhd[u] === 0) {
++        dead.push(u)
++      }
++    }
+   }
+-  code.push("return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return "a" + i
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "b" + i
+-    }).join(",")+",c)}")
+ 
+-  //view.transpose():
+-  var tShape = new Array(dimension)
+-  var tStride = new Array(dimension)
+-  for(var i=0; i<dimension; ++i) {
+-    tShape[i] = "a[i"+i+"]"
+-    tStride[i] = "b[i"+i+"]"
++  var newIndex = new Array(positions.length)
++  var npositions = []
++  for(var i=0; i<positions.length; ++i) {
++    if(live[i]) {
++      var v = npositions.length
++      newIndex[i] = v
++      npositions.push(positions[i])
++    } else {
++      newIndex[i] = -1
++    }
+   }
+-  code.push("proto.transpose=function "+className+"_transpose("+args+"){"+
+-    args.map(function(n,idx) { return n + "=(" + n + "===undefined?" + idx + ":" + n + "|0)"}).join(";"),
+-    "var a=this.shape,b=this.stride;return new "+className+"(this.data,"+tShape.join(",")+","+tStride.join(",")+",this.offset)}")
+ 
+-  //view.pick():
+-  code.push("proto.pick=function "+className+"_pick("+args+"){var a=[],b=[],c=this.offset")
+-  for(var i=0; i<dimension; ++i) {
+-    code.push("if(typeof i"+i+"==='number'&&i"+i+">=0){c=(c+this.stride["+i+"]*i"+i+")|0}else{a.push(this.shape["+i+"]);b.push(this.stride["+i+"])}")
++  var nedges = []
++  for(var i=0; i<edges.length; ++i) {
++    var e = edges[i]
++    if(live[e[0]] && live[e[1]]) {
++      nedges.push([ newIndex[e[0]], newIndex[e[1]] ])
++    }
+   }
+-  code.push("var ctor=CTOR_LIST[a.length+1];return ctor(this.data,a,b,c)}")
++  
++  return [ nedges, npositions ]
++}
++},{"edges-to-adjacency-list":78}],202:[function(require,module,exports){
++'use strict'
+ 
+-  //Add return statement
+-  code.push("return function construct_"+className+"(data,shape,stride,offset){return new "+className+"(data,"+
+-    indices.map(function(i) {
+-      return "shape["+i+"]"
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "stride["+i+"]"
+-    }).join(",")+",offset)}")
++module.exports = planarGraphToPolyline
+ 
+-  //Compile procedure
+-  var procedure = new Function("CTOR_LIST", "ORDER", code.join("\n"))
+-  return procedure(CACHED_CONSTRUCTORS[dtype], order)
+-}
++var e2a = require('edges-to-adjacency-list')
++var planarDual = require('planar-dual')
++var preprocessPolygon = require('point-in-big-polygon')
++var twoProduct = require('two-product')
++var robustSum = require('robust-sum')
++var uniq = require('uniq')
++var trimLeaves = require('./lib/trim-leaves')
+ 
+-function arrayDType(data) {
+-  if(isBuffer(data)) {
+-    return "buffer"
+-  }
+-  if(hasTypedArrays) {
+-    switch(Object.prototype.toString.call(data)) {
+-      case "[object Float64Array]":
+-        return "float64"
+-      case "[object Float32Array]":
+-        return "float32"
+-      case "[object Int8Array]":
+-        return "int8"
+-      case "[object Int16Array]":
+-        return "int16"
+-      case "[object Int32Array]":
+-        return "int32"
+-      case "[object Uint8Array]":
+-        return "uint8"
+-      case "[object Uint16Array]":
+-        return "uint16"
+-      case "[object Uint32Array]":
+-        return "uint32"
+-      case "[object Uint8ClampedArray]":
+-        return "uint8_clamped"
+-    }
+-  }
+-  if(Array.isArray(data)) {
+-    return "array"
++function makeArray(length, fill) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = fill
+   }
+-  return "generic"
++  return result
+ }
+ 
+-var CACHED_CONSTRUCTORS = {
+-  "float32":[],
+-  "float64":[],
+-  "int8":[],
+-  "int16":[],
+-  "int32":[],
+-  "uint8":[],
+-  "uint16":[],
+-  "uint32":[],
+-  "array":[],
+-  "uint8_clamped":[],
+-  "buffer":[],
+-  "generic":[]
++function makeArrayOfArrays(length) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = []
++  }
++  return result
+ }
+ 
+-;(function() {
+-  for(var id in CACHED_CONSTRUCTORS) {
+-    CACHED_CONSTRUCTORS[id].push(compileConstructor(id, -1))
+-  }
+-});
+ 
+-function wrappedNDArrayCtor(data, shape, stride, offset) {
+-  if(data === undefined) {
+-    var ctor = CACHED_CONSTRUCTORS.array[0]
+-    return ctor([])
+-  } else if(typeof data === "number") {
+-    data = [data]
+-  }
+-  if(shape === undefined) {
+-    shape = [ data.length ]
++function planarGraphToPolyline(edges, positions) {
++
++  //Trim leaves
++  var result = trimLeaves(edges, positions)
++  edges = result[0]
++  positions = result[1]
++
++  var numVertices = positions.length
++  var numEdges = edges.length
++
++  //Calculate adjacency list, check manifold
++  var adj = e2a(edges, positions.length)
++  for(var i=0; i<numVertices; ++i) {
++    if(adj[i].length % 2 === 1) {
++      throw new Error('planar-graph-to-polyline: graph must be manifold')
++    }
+   }
+-  var d = shape.length
+-  if(stride === undefined) {
+-    stride = new Array(d)
+-    for(var i=d-1, sz=1; i>=0; --i) {
+-      stride[i] = sz
+-      sz *= shape[i]
++
++  //Get faces
++  var faces = planarDual(edges, positions)
++
++  //Check orientation of a polygon using exact arithmetic
++  function ccw(c) {
++    var n = c.length
++    var area = [0]
++    for(var j=0; j<n; ++j) {
++      var a = positions[c[j]]
++      var b = positions[c[(j+1)%n]]
++      var t00 = twoProduct(-a[0], a[1])
++      var t01 = twoProduct(-a[0], b[1])
++      var t10 = twoProduct( b[0], a[1])
++      var t11 = twoProduct( b[0], b[1])
++      area = robustSum(area, robustSum(robustSum(t00, t01), robustSum(t10, t11)))
+     }
++    return area[area.length-1] > 0
+   }
+-  if(offset === undefined) {
+-    offset = 0
+-    for(var i=0; i<d; ++i) {
+-      if(stride[i] < 0) {
+-        offset -= (shape[i]-1)*stride[i]
++
++  //Extract all clockwise faces
++  faces = faces.filter(ccw)
++
++  //Detect which loops are contained in one another to handle parent-of relation
++  var numFaces = faces.length
++  var parent = new Array(numFaces)
++  var containment = new Array(numFaces)
++  for(var i=0; i<numFaces; ++i) {
++    parent[i] = i
++    var row = new Array(numFaces)
++    var loopVertices = faces[i].map(function(v) {
++      return positions[v]
++    })
++    var pmc = preprocessPolygon([loopVertices])
++    var count = 0
++    outer:
++    for(var j=0; j<numFaces; ++j) {
++      row[j] = 0
++      if(i === j) {
++        continue
++      }
++      var c = faces[j]
++      var n = c.length
++      for(var k=0; k<n; ++k) {
++        var d = pmc(positions[c[k]])
++        if(d !== 0) {
++          if(d < 0) {
++            row[j] = 1
++            count += 1
++          }
++          continue outer
++        }
+       }
++      row[j] = 1
++      count += 1
+     }
++    containment[i] = [count, i, row]
+   }
+-  var dtype = arrayDType(data)
+-  var ctor_list = CACHED_CONSTRUCTORS[dtype]
+-  while(ctor_list.length <= d+1) {
+-    ctor_list.push(compileConstructor(dtype, ctor_list.length-1))
++  containment.sort(function(a,b) {
++    return b[0] - a[0]
++  })
++  for(var i=0; i<numFaces; ++i) {
++    var row = containment[i]
++    var idx = row[1]
++    var children = row[2]
++    for(var j=0; j<numFaces; ++j) {
++      if(children[j]) {
++        parent[j] = idx
++      }
++    }
+   }
+-  var ctor = ctor_list[d+1]
+-  return ctor(data, shape, stride, offset)
+-}
+-
+-module.exports = wrappedNDArrayCtor
+-
+-},{"iota-array":205,"is-buffer":206}],220:[function(require,module,exports){
+-/*!
+- * repeat-string <https://github.com/jonschlinkert/repeat-string>
+- *
+- * Copyright (c) 2014-2015, Jon Schlinkert.
+- * Licensed under the MIT License.
+- */
+-
+-'use strict';
+-
+-/**
+- * Results cache
+- */
+ 
+-var res = '';
+-var cache;
++  //Initialize face adjacency list
++  var fadj = makeArrayOfArrays(numFaces)
++  for(var i=0; i<numFaces; ++i) {
++    fadj[i].push(parent[i])
++    fadj[parent[i]].push(i)
++  }
+ 
+-/**
+- * Expose `repeat`
+- */
++  //Build adjacency matrix for edges
++  var edgeAdjacency = {}
++  var internalVertices = makeArray(numVertices, false)
++  for(var i=0; i<numFaces; ++i) {
++    var c = faces[i]
++    var n = c.length
++    for(var j=0; j<n; ++j) {
++      var a = c[j]
++      var b = c[(j+1)%n]
++      var key = Math.min(a,b) + ":" + Math.max(a,b)
++      if(key in edgeAdjacency) {
++        var neighbor = edgeAdjacency[key]
++        fadj[neighbor].push(i)
++        fadj[i].push(neighbor)
++        internalVertices[a] = internalVertices[b] = true
++      } else {
++        edgeAdjacency[key] = i
++      }
++    }
++  }
+ 
+-module.exports = repeat;
++  function sharedBoundary(c) {
++    var n = c.length
++    for(var i=0; i<n; ++i) {
++      if(!internalVertices[c[i]]) {
++        return false
++      }
++    }
++    return true
++  }
+ 
+-/**
+- * Repeat the given `string` the specified `number`
+- * of times.
+- *
+- * **Example:**
+- *
+- * ```js
+- * var repeat = require('repeat-string');
+- * repeat('A', 5);
+- * //=> AAAAA
+- * ```
+- *
+- * @param {String} `string` The string to repeat
+- * @param {Number} `number` The number of times to repeat the string
+- * @return {String} Repeated string
+- * @api public
+- */
++  var toVisit = []
++  var parity = makeArray(numFaces, -1)
++  for(var i=0; i<numFaces; ++i) {
++    if(parent[i] === i && !sharedBoundary(faces[i])) {
++      toVisit.push(i)
++      parity[i] = 0
++    } else {
++      parity[i] = -1
++    }
++  }
+ 
+-function repeat(str, num) {
+-  if (typeof str !== 'string') {
+-    throw new TypeError('repeat-string expects a string.');
++  //Using face adjacency, classify faces as in/out
++  var result = []
++  while(toVisit.length > 0) {
++    var top = toVisit.pop()
++    var nbhd = fadj[top]
++    uniq(nbhd, function(a,b) {
++      return a-b
++    })
++    var nnbhr = nbhd.length
++    var p = parity[top]
++    var polyline
++    if(p === 0) {
++      var c = faces[top]
++      polyline = [c]
++    }
++    for(var i=0; i<nnbhr; ++i) {
++      var f = nbhd[i]
++      if(parity[f] >= 0) {
++        continue
++      }
++      parity[f] = p^1
++      toVisit.push(f)
++      if(p === 0) {
++        var c = faces[f]
++        if(!sharedBoundary(c)) {
++          c.reverse()
++          polyline.push(c)
++        }
++      }
++    }
++    if(p === 0) {
++      result.push(polyline)
++    }
+   }
+ 
+-  // cover common, quick use cases
+-  if (num === 1) return str;
+-  if (num === 2) return str + str;
++  return result
++}
++},{"./lib/trim-leaves":201,"edges-to-adjacency-list":78,"planar-dual":200,"point-in-big-polygon":203,"robust-sum":224,"two-product":244,"uniq":248}],203:[function(require,module,exports){
++module.exports = preprocessPolygon
+ 
+-  var max = str.length * num;
+-  if (cache !== str || typeof cache === 'undefined') {
+-    cache = str;
+-    res = '';
+-  }
++var orient = require('robust-orientation')[3]
++var makeSlabs = require('slab-decomposition')
++var makeIntervalTree = require('interval-tree-1d')
++var bsearch = require('binary-search-bounds')
+ 
+-  while (max > res.length && num > 0) {
+-    if (num & 1) {
+-      res += str;
+-    }
++function visitInterval() {
++  return true
++}
+ 
+-    num >>= 1;
+-    if (!num) break;
+-    str += str;
++function intervalSearch(table) {
++  return function(x, y) {
++    var tree = table[x]
++    if(tree) {
++      return !!tree.queryPoint(y, visitInterval)
++    }
++    return false
+   }
+-
+-  return res.substr(0, max);
+ }
+ 
+-
+-},{}],221:[function(require,module,exports){
+-(function (global){
+-module.exports =
+-  global.performance &&
+-  global.performance.now ? function now() {
+-    return performance.now()
+-  } : Date.now || function now() {
+-    return +new Date
++function buildVerticalIndex(segments) {
++  var table = {}
++  for(var i=0; i<segments.length; ++i) {
++    var s = segments[i]
++    var x = s[0][0]
++    var y0 = s[0][1]
++    var y1 = s[1][1]
++    var p = [ Math.min(y0, y1), Math.max(y0, y1) ]
++    if(x in table) {
++      table[x].push(p)
++    } else {
++      table[x] = [ p ]
++    }
+   }
++  var intervalTable = {}
++  var keys = Object.keys(table)
++  for(var i=0; i<keys.length; ++i) {
++    var segs = table[keys[i]]
++    intervalTable[keys[i]] = makeIntervalTree(segs)
++  }
++  return intervalSearch(intervalTable)
++}
+ 
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{}],222:[function(require,module,exports){
+-"use strict"
+-
+-var determinant = require("robust-determinant")
+-
+-var NUM_EXPAND = 6
+-
+-function generateSolver(n) {
+-  var funcName = "robustLinearSolve" + n + "d"
+-  var code = ["function ", funcName, "(A,b){return ["]
+-  for(var i=0; i<n; ++i) {
+-    code.push("det([")
+-    for(var j=0; j<n; ++j) {
+-      if(j > 0) {
+-        code.push(",")
++function buildSlabSearch(slabs, coordinates) {
++  return function(p) {
++    var bucket = bsearch.le(coordinates, p[0])
++    if(bucket < 0) {
++      return 1
++    }
++    var root = slabs[bucket]
++    if(!root) {
++      if(bucket > 0 && coordinates[bucket] === p[0]) {
++        root = slabs[bucket-1]
++      } else {
++        return 1
+       }
+-      code.push("[")
+-      for(var k=0; k<n; ++k) {
+-        if(k > 0) {
+-          code.push(",")
++    }
++    var lastOrientation = 1
++    while(root) {
++      var s = root.key
++      var o = orient(p, s[0], s[1])
++      if(s[0][0] < s[1][0]) {
++        if(o < 0) {
++          root = root.left
++        } else if(o > 0) {
++          lastOrientation = -1
++          root = root.right
++        } else {
++          return 0
+         }
+-        if(k === i) {
+-          code.push("+b[", j, "]")
++      } else {
++        if(o > 0) {
++          root = root.left
++        } else if(o < 0) {
++          lastOrientation = 1
++          root = root.right
+         } else {
+-          code.push("+A[", j, "][", k, "]")
++          return 0
+         }
+       }
+-      code.push("]")
+     }
+-    code.push("]),")
+-  }
+-  code.push("det(A)]}return ", funcName)
+-  var proc = new Function("det", code.join(""))
+-  if(n < 6) {
+-    return proc(determinant[n])
++    return lastOrientation
+   }
+-  return proc(determinant)
+-}
+-
+-function robustLinearSolve0d() {
+-  return [ 0 ]
+ }
+ 
+-function robustLinearSolve1d(A, b) {
+-  return [ [ b[0] ], [ A[0][0] ] ]
++function classifyEmpty(p) {
++  return 1
+ }
+ 
+-var CACHE = [
+-  robustLinearSolve0d,
+-  robustLinearSolve1d
+-]
+-
+-function generateDispatch() {
+-  while(CACHE.length < NUM_EXPAND) {
+-    CACHE.push(generateSolver(CACHE.length))
+-  }
+-  var procArgs = []
+-  var code = ["function dispatchLinearSolve(A,b){switch(A.length){"]
+-  for(var i=0; i<NUM_EXPAND; ++i) {
+-    procArgs.push("s" + i)
+-    code.push("case ", i, ":return s", i, "(A,b);")
+-  }
+-  code.push("}var s=CACHE[A.length];if(!s)s=CACHE[A.length]=g(A.length);return s(A,b)}return dispatchLinearSolve")
+-  procArgs.push("CACHE", "g", code.join(""))
+-  var proc = Function.apply(undefined, procArgs)
+-  module.exports = proc.apply(undefined, CACHE.concat([CACHE, generateSolver]))
+-  for(var i=0; i<NUM_EXPAND; ++i) {
+-    module.exports[i] = CACHE[i]
++function createClassifyVertical(testVertical) {
++  return function classify(p) {
++    if(testVertical(p[0], p[1])) {
++      return 0
++    }
++    return 1
+   }
+ }
+ 
+-generateDispatch()
+-},{"robust-determinant":224}],223:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = compressExpansion
+-
+-function compressExpansion(e) {
+-  var m = e.length
+-  var Q = e[e.length-1]
+-  var bottom = m
+-  for(var i=m-2; i>=0; --i) {
+-    var a = Q
+-    var b = e[i]
+-    Q = a + b
+-    var bv = Q - a
+-    var q = b - bv
+-    if(q) {
+-      e[--bottom] = Q
+-      Q = q
+-    }
+-  }
+-  var top = 0
+-  for(var i=bottom; i<m; ++i) {
+-    var a = e[i]
+-    var b = Q
+-    Q = a + b
+-    var bv = Q - a
+-    var q = b - bv
+-    if(q) {
+-      e[top++] = q
++function createClassifyPointDegen(testVertical, testNormal) {
++  return function classify(p) {
++    if(testVertical(p[0], p[1])) {
++      return 0
+     }
++    return testNormal(p)
+   }
+-  e[top++] = Q
+-  e.length = top
+-  return e
+ }
+-},{}],224:[function(require,module,exports){
+-"use strict"
+-
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
+-var robustScale = require("robust-scale")
+-var compress = require("robust-compress")
+ 
+-var NUM_EXPANDED = 6
++function preprocessPolygon(loops) {
++  //Compute number of loops
++  var numLoops = loops.length
+ 
+-function cofactor(m, c) {
+-  var result = new Array(m.length-1)
+-  for(var i=1; i<m.length; ++i) {
+-    var r = result[i-1] = new Array(m.length-1)
+-    for(var j=0,k=0; j<m.length; ++j) {
+-      if(j === c) {
+-        continue
++  //Unpack segments
++  var segments = []
++  var vsegments = []
++  var ptr = 0
++  for(var i=0; i<numLoops; ++i) {
++    var loop = loops[i]
++    var numVertices = loop.length
++    for(var s=numVertices-1,t=0; t<numVertices; s=(t++)) {
++      var a = loop[s]
++      var b = loop[t]
++      if(a[0] === b[0]) {
++        vsegments.push([a,b])
++      } else {
++        segments.push([a,b])
+       }
+-      r[k++] = m[i][j]
+     }
+   }
+-  return result
+-}
+ 
+-function matrix(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = new Array(n)
+-    for(var j=0; j<n; ++j) {
+-      result[i][j] = ["m[", i, "][", j, "]"].join("")
++  //Degenerate case: All loops are empty
++  if(segments.length === 0) {
++    if(vsegments.length === 0) {
++      return classifyEmpty
++    } else {
++      return createClassifyVertical(buildVerticalIndex(vsegments))
+     }
+   }
+-  return result
+-}
+-
+-function sign(n) {
+-  if(n & 1) {
+-    return "-"
+-  }
+-  return ""
+-}
+ 
+-function generateSum(expr) {
+-  if(expr.length === 1) {
+-    return expr[0]
+-  } else if(expr.length === 2) {
+-    return ["sum(", expr[0], ",", expr[1], ")"].join("")
+-  } else {
+-    var m = expr.length>>1
+-    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
+-  }
+-}
++  //Build slab decomposition
++  var slabs = makeSlabs(segments)
++  var testSlab = buildSlabSearch(slabs.slabs, slabs.coordinates)
+ 
+-function determinant(m) {
+-  if(m.length === 2) {
+-    return ["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")
++  if(vsegments.length === 0) {
++    return testSlab
+   } else {
+-    var expr = []
+-    for(var i=0; i<m.length; ++i) {
+-      expr.push(["scale(", determinant(cofactor(m, i)), ",", sign(i), m[0][i], ")"].join(""))
+-    }
+-    return generateSum(expr)
++    return createClassifyPointDegen(
++      buildVerticalIndex(vsegments),
++      testSlab)
+   }
+ }
++},{"binary-search-bounds":34,"interval-tree-1d":166,"robust-orientation":219,"slab-decomposition":235}],204:[function(require,module,exports){
++//Optimized version for triangle closest point
++// Based on Eberly's WildMagick codes
++// http://www.geometrictools.com/LibMathematics/Distance/Distance.html
++"use strict";
+ 
+-function compileDeterminant(n) {
+-  var proc = new Function("sum", "scale", "prod", "compress", [
+-    "function robustDeterminant",n, "(m){return compress(", 
+-      determinant(matrix(n)),
+-    ")};return robustDeterminant", n].join(""))
+-  return proc(robustSum, robustScale, twoProduct, compress)
+-}
+-
+-var CACHE = [
+-  function robustDeterminant0() { return [0] },
+-  function robustDeterminant1(m) { return [m[0][0]] }
+-]
++var diff = new Float64Array(4);
++var edge0 = new Float64Array(4);
++var edge1 = new Float64Array(4);
+ 
+-function generateDispatch() {
+-  while(CACHE.length < NUM_EXPANDED) {
+-    CACHE.push(compileDeterminant(CACHE.length))
++function closestPoint2d(V0, V1, V2, point, result) {
++  //Reallocate buffers if necessary
++  if(diff.length < point.length) {
++    diff = new Float64Array(point.length);
++    edge0 = new Float64Array(point.length);
++    edge1 = new Float64Array(point.length);
+   }
+-  var procArgs = []
+-  var code = ["function robustDeterminant(m){switch(m.length){"]
+-  for(var i=0; i<NUM_EXPANDED; ++i) {
+-    procArgs.push("det" + i)
+-    code.push("case ", i, ":return det", i, "(m);")
++  //Compute edges
++  for(var i=0; i<point.length; ++i) {
++    diff[i]  = V0[i] - point[i];
++    edge0[i] = V1[i] - V0[i];
++    edge1[i] = V2[i] - V0[i];
+   }
+-  code.push("}\
+-var det=CACHE[m.length];\
+-if(!det)\
+-det=CACHE[m.length]=gen(m.length);\
+-return det(m);\
+-}\
+-return robustDeterminant")
+-  procArgs.push("CACHE", "gen", code.join(""))
+-  var proc = Function.apply(undefined, procArgs)
+-  module.exports = proc.apply(undefined, CACHE.concat([CACHE, compileDeterminant]))
+-  for(var i=0; i<CACHE.length; ++i) {
+-    module.exports[i] = CACHE[i]
++  //Compute coefficients for quadratic func
++  var a00 = 0.0
++    , a01 = 0.0
++    , a11 = 0.0
++    , b0  = 0.0
++    , b1  = 0.0
++    , c   = 0.0;
++  for(var i=0; i<point.length; ++i) {
++    var e0 = edge0[i]
++      , e1 = edge1[i]
++      , d  = diff[i];
++    a00 += e0 * e0;
++    a01 += e0 * e1;
++    a11 += e1 * e1;
++    b0  += d * e0;
++    b1  += d * e1;
++    c   += d * d;
+   }
+-}
+-
+-generateDispatch()
+-},{"robust-compress":223,"robust-scale":226,"robust-sum":228,"two-product":240}],225:[function(require,module,exports){
+-"use strict"
+-
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
+-var robustScale = require("robust-scale")
+-var robustSubtract = require("robust-subtract")
+-
+-var NUM_EXPAND = 5
+-
+-var EPSILON     = 1.1102230246251565e-16
+-var ERRBOUND3   = (3.0 + 16.0 * EPSILON) * EPSILON
+-var ERRBOUND4   = (7.0 + 56.0 * EPSILON) * EPSILON
+-
+-function cofactor(m, c) {
+-  var result = new Array(m.length-1)
+-  for(var i=1; i<m.length; ++i) {
+-    var r = result[i-1] = new Array(m.length-1)
+-    for(var j=0,k=0; j<m.length; ++j) {
+-      if(j === c) {
+-        continue
++  //Compute determinant/coeffs
++  var det = Math.abs(a00*a11 - a01*a01);
++  var s   = a01*b1 - a11*b0;
++  var t   = a01*b0 - a00*b1;
++  var sqrDistance;
++  //Hardcoded Voronoi diagram classification
++  if (s + t <= det) {
++    if (s < 0) {
++      if (t < 0) { // region 4
++        if (b0 < 0) {
++          t = 0;
++          if (-b0 >= a00) {
++            s = 1.0;
++            sqrDistance = a00 + 2.0*b0 + c;
++          } else {
++            s = -b0/a00;
++            sqrDistance = b0*s + c;
++          }
++        } else {
++          s = 0;
++          if (b1 >= 0) {
++            t = 0;
++            sqrDistance = c;
++          } else if (-b1 >= a11) {
++            t = 1;
++            sqrDistance = a11 + 2.0*b1 + c;
++          } else {
++            t = -b1/a11;
++            sqrDistance = b1*t + c;
++          }
++        }
++      } else {  // region 3
++        s = 0;
++        if (b1 >= 0) {
++          t = 0;
++          sqrDistance = c;
++        } else if (-b1 >= a11) {
++          t = 1;
++          sqrDistance = a11 + 2.0*b1 + c;
++        } else {
++          t = -b1/a11;
++          sqrDistance = b1*t + c;
++        }
++      }
++    } else if (t < 0) { // region 5
++      t = 0;
++      if (b0 >= 0) {
++        s = 0;
++        sqrDistance = c;
++      } else if (-b0 >= a00) {
++        s = 1;
++        sqrDistance = a00 + 2.0*b0 + c;
++      } else {
++        s = -b0/a00;
++        sqrDistance = b0*s + c;
++      }
++    } else {  // region 0
++      // minimum at interior point
++      var invDet = 1.0 / det;
++      s *= invDet;
++      t *= invDet;
++      sqrDistance = s*(a00*s + a01*t + 2.0*b0) + t*(a01*s + a11*t + 2.0*b1) + c;
++    }
++  } else {
++    var tmp0, tmp1, numer, denom;
++    
++    if (s < 0) {  // region 2
++      tmp0 = a01 + b0;
++      tmp1 = a11 + b1;
++      if (tmp1 > tmp0) {
++        numer = tmp1 - tmp0;
++        denom = a00 - 2.0*a01 + a11;
++        if (numer >= denom) {
++          s = 1;
++          t = 0;
++          sqrDistance = a00 + 2.0*b0 + c;
++        } else {
++          s = numer/denom;
++          t = 1 - s;
++          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
++          t*(a01*s + a11*t + 2.0*b1) + c;
++        }
++      } else {
++        s = 0;
++        if (tmp1 <= 0) {
++          t = 1;
++          sqrDistance = a11 + 2.0*b1 + c;
++        } else if (b1 >= 0) {
++          t = 0;
++          sqrDistance = c;
++        } else {
++          t = -b1/a11;
++          sqrDistance = b1*t + c;
++        }
++      }
++    } else if (t < 0) {  // region 6
++      tmp0 = a01 + b1;
++      tmp1 = a00 + b0;
++      if (tmp1 > tmp0) {
++        numer = tmp1 - tmp0;
++        denom = a00 - 2.0*a01 + a11;
++        if (numer >= denom) {
++          t = 1;
++          s = 0;
++          sqrDistance = a11 + 2.0*b1 + c;
++        } else {
++          t = numer/denom;
++          s = 1 - t;
++          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
++          t*(a01*s + a11*t + 2.0*b1) + c;
++        }
++      } else {
++        t = 0;
++        if (tmp1 <= 0) {
++          s = 1;
++          sqrDistance = a00 + 2.0*b0 + c;
++        } else if (b0 >= 0) {
++          s = 0;
++          sqrDistance = c;
++        } else {
++          s = -b0/a00;
++          sqrDistance = b0*s + c;
++        }
++      }
++    } else {  // region 1
++      numer = a11 + b1 - a01 - b0;
++      if (numer <= 0) {
++        s = 0;
++        t = 1;
++        sqrDistance = a11 + 2.0*b1 + c;
++      } else {
++        denom = a00 - 2.0*a01 + a11;
++        if (numer >= denom) {
++          s = 1;
++          t = 0;
++          sqrDistance = a00 + 2.0*b0 + c;
++        } else {
++          s = numer/denom;
++          t = 1 - s;
++          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
++          t*(a01*s + a11*t + 2.0*b1) + c;
++        }
+       }
+-      r[k++] = m[i][j]
+     }
+   }
+-  return result
+-}
+-
+-function matrix(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = new Array(n)
+-    for(var j=0; j<n; ++j) {
+-      result[i][j] = ["m", j, "[", (n-i-1), "]"].join("")
+-    }
++  var u = 1.0 - s - t;
++  for(var i=0; i<point.length; ++i) {
++    result[i] = u * V0[i] + s * V1[i] + t * V2[i];
+   }
+-  return result
+-}
+-
+-function sign(n) {
+-  if(n & 1) {
+-    return "-"
++  if(sqrDistance < 0) {
++    return 0;
+   }
+-  return ""
++  return sqrDistance;
+ }
+ 
+-function generateSum(expr) {
+-  if(expr.length === 1) {
+-    return expr[0]
+-  } else if(expr.length === 2) {
+-    return ["sum(", expr[0], ",", expr[1], ")"].join("")
+-  } else {
+-    var m = expr.length>>1
+-    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
+-  }
++module.exports = closestPoint2d;
++
++},{}],205:[function(require,module,exports){
++// shim for using process in browser
++var process = module.exports = {};
++
++// cached from whatever global is present so that test runners that stub it
++// don't break things.  But we need to wrap it in a try catch in case it is
++// wrapped in strict mode code which doesn't define any globals.  It's inside a
++// function because try/catches deoptimize in certain engines.
++
++var cachedSetTimeout;
++var cachedClearTimeout;
++
++function defaultSetTimout() {
++    throw new Error('setTimeout has not been defined');
++}
++function defaultClearTimeout () {
++    throw new Error('clearTimeout has not been defined');
+ }
++(function () {
++    try {
++        if (typeof setTimeout === 'function') {
++            cachedSetTimeout = setTimeout;
++        } else {
++            cachedSetTimeout = defaultSetTimout;
++        }
++    } catch (e) {
++        cachedSetTimeout = defaultSetTimout;
++    }
++    try {
++        if (typeof clearTimeout === 'function') {
++            cachedClearTimeout = clearTimeout;
++        } else {
++            cachedClearTimeout = defaultClearTimeout;
++        }
++    } catch (e) {
++        cachedClearTimeout = defaultClearTimeout;
++    }
++} ())
++function runTimeout(fun) {
++    if (cachedSetTimeout === setTimeout) {
++        //normal enviroments in sane situations
++        return setTimeout(fun, 0);
++    }
++    // if setTimeout wasn't available but was latter defined
++    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
++        cachedSetTimeout = setTimeout;
++        return setTimeout(fun, 0);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedSetTimeout(fun, 0);
++    } catch(e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
++            return cachedSetTimeout.call(null, fun, 0);
++        } catch(e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
++            return cachedSetTimeout.call(this, fun, 0);
++        }
++    }
+ 
+-function determinant(m) {
+-  if(m.length === 2) {
+-    return [["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")]
+-  } else {
+-    var expr = []
+-    for(var i=0; i<m.length; ++i) {
+-      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
++
++}
++function runClearTimeout(marker) {
++    if (cachedClearTimeout === clearTimeout) {
++        //normal enviroments in sane situations
++        return clearTimeout(marker);
+     }
+-    return expr
+-  }
++    // if clearTimeout wasn't available but was latter defined
++    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
++        cachedClearTimeout = clearTimeout;
++        return clearTimeout(marker);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedClearTimeout(marker);
++    } catch (e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
++            return cachedClearTimeout.call(null, marker);
++        } catch (e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
++            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
++            return cachedClearTimeout.call(this, marker);
++        }
++    }
++
++
++
+ }
++var queue = [];
++var draining = false;
++var currentQueue;
++var queueIndex = -1;
+ 
+-function orientation(n) {
+-  var pos = []
+-  var neg = []
+-  var m = matrix(n)
+-  var args = []
+-  for(var i=0; i<n; ++i) {
+-    if((i&1)===0) {
+-      pos.push.apply(pos, determinant(cofactor(m, i)))
++function cleanUpNextTick() {
++    if (!draining || !currentQueue) {
++        return;
++    }
++    draining = false;
++    if (currentQueue.length) {
++        queue = currentQueue.concat(queue);
+     } else {
+-      neg.push.apply(neg, determinant(cofactor(m, i)))
++        queueIndex = -1;
++    }
++    if (queue.length) {
++        drainQueue();
+     }
+-    args.push("m" + i)
+-  }
+-  var posExpr = generateSum(pos)
+-  var negExpr = generateSum(neg)
+-  var funcName = "orientation" + n + "Exact"
+-  var code = ["function ", funcName, "(", args.join(), "){var p=", posExpr, ",n=", negExpr, ",d=sub(p,n);\
+-return d[d.length-1];};return ", funcName].join("")
+-  var proc = new Function("sum", "prod", "scale", "sub", code)
+-  return proc(robustSum, twoProduct, robustScale, robustSubtract)
+ }
+ 
+-var orientation3Exact = orientation(3)
+-var orientation4Exact = orientation(4)
++function drainQueue() {
++    if (draining) {
++        return;
++    }
++    var timeout = runTimeout(cleanUpNextTick);
++    draining = true;
+ 
+-var CACHED = [
+-  function orientation0() { return 0 },
+-  function orientation1() { return 0 },
+-  function orientation2(a, b) { 
+-    return b[0] - a[0]
+-  },
+-  function orientation3(a, b, c) {
+-    var l = (a[1] - c[1]) * (b[0] - c[0])
+-    var r = (a[0] - c[0]) * (b[1] - c[1])
+-    var det = l - r
+-    var s
+-    if(l > 0) {
+-      if(r <= 0) {
+-        return det
+-      } else {
+-        s = l + r
+-      }
+-    } else if(l < 0) {
+-      if(r >= 0) {
+-        return det
+-      } else {
+-        s = -(l + r)
+-      }
+-    } else {
+-      return det
++    var len = queue.length;
++    while(len) {
++        currentQueue = queue;
++        queue = [];
++        while (++queueIndex < len) {
++            if (currentQueue) {
++                currentQueue[queueIndex].run();
++            }
++        }
++        queueIndex = -1;
++        len = queue.length;
+     }
+-    var tol = ERRBOUND3 * s
+-    if(det >= tol || det <= -tol) {
+-      return det
++    currentQueue = null;
++    draining = false;
++    runClearTimeout(timeout);
++}
++
++process.nextTick = function (fun) {
++    var args = new Array(arguments.length - 1);
++    if (arguments.length > 1) {
++        for (var i = 1; i < arguments.length; i++) {
++            args[i - 1] = arguments[i];
++        }
+     }
+-    return orientation3Exact(a, b, c)
+-  },
+-  function orientation4(a,b,c,d) {
+-    var adx = a[0] - d[0]
+-    var bdx = b[0] - d[0]
+-    var cdx = c[0] - d[0]
+-    var ady = a[1] - d[1]
+-    var bdy = b[1] - d[1]
+-    var cdy = c[1] - d[1]
+-    var adz = a[2] - d[2]
+-    var bdz = b[2] - d[2]
+-    var cdz = c[2] - d[2]
+-    var bdxcdy = bdx * cdy
+-    var cdxbdy = cdx * bdy
+-    var cdxady = cdx * ady
+-    var adxcdy = adx * cdy
+-    var adxbdy = adx * bdy
+-    var bdxady = bdx * ady
+-    var det = adz * (bdxcdy - cdxbdy) 
+-            + bdz * (cdxady - adxcdy)
+-            + cdz * (adxbdy - bdxady)
+-    var permanent = (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * Math.abs(adz)
+-                  + (Math.abs(cdxady) + Math.abs(adxcdy)) * Math.abs(bdz)
+-                  + (Math.abs(adxbdy) + Math.abs(bdxady)) * Math.abs(cdz)
+-    var tol = ERRBOUND4 * permanent
+-    if ((det > tol) || (-det > tol)) {
+-      return det
++    queue.push(new Item(fun, args));
++    if (queue.length === 1 && !draining) {
++        runTimeout(drainQueue);
+     }
+-    return orientation4Exact(a,b,c,d)
+-  }
+-]
++};
+ 
+-function slowOrient(args) {
+-  var proc = CACHED[args.length]
+-  if(!proc) {
+-    proc = CACHED[args.length] = orientation(args.length)
+-  }
+-  return proc.apply(undefined, args)
++// v8 likes predictible objects
++function Item(fun, array) {
++    this.fun = fun;
++    this.array = array;
+ }
++Item.prototype.run = function () {
++    this.fun.apply(null, this.array);
++};
++process.title = 'browser';
++process.browser = true;
++process.env = {};
++process.argv = [];
++process.version = ''; // empty string to avoid regexp issues
++process.versions = {};
+ 
+-function generateOrientationProc() {
+-  while(CACHED.length <= NUM_EXPAND) {
+-    CACHED.push(orientation(CACHED.length))
+-  }
+-  var args = []
+-  var procArgs = ["slow"]
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    args.push("a" + i)
+-    procArgs.push("o" + i)
+-  }
+-  var code = [
+-    "function getOrientation(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
+-  ]
+-  for(var i=2; i<=NUM_EXPAND; ++i) {
+-    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
+-  }
+-  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return getOrientation")
+-  procArgs.push(code.join(""))
++function noop() {}
+ 
+-  var proc = Function.apply(undefined, procArgs)
+-  module.exports = proc.apply(undefined, [slowOrient].concat(CACHED))
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    module.exports[i] = CACHED[i]
++process.on = noop;
++process.addListener = noop;
++process.once = noop;
++process.off = noop;
++process.removeListener = noop;
++process.removeAllListeners = noop;
++process.emit = noop;
++
++process.binding = function (name) {
++    throw new Error('process.binding is not supported');
++};
++
++process.cwd = function () { return '/' };
++process.chdir = function (dir) {
++    throw new Error('process.chdir is not supported');
++};
++process.umask = function() { return 0; };
++
++},{}],206:[function(require,module,exports){
++module.exports = require('gl-quat/slerp')
++},{"gl-quat/slerp":128}],207:[function(require,module,exports){
++'use strict'
++
++var bnadd = require('big-rat/add')
++
++module.exports = add
++
++function add(a, b) {
++  var n = a.length
++  var r = new Array(n)
++    for(var i=0; i<n; ++i) {
++    r[i] = bnadd(a[i], b[i])
+   }
++  return r
+ }
+ 
+-generateOrientationProc()
+-},{"robust-scale":226,"robust-subtract":227,"robust-sum":228,"two-product":240}],226:[function(require,module,exports){
+-"use strict"
++},{"big-rat/add":18}],208:[function(require,module,exports){
++'use strict'
+ 
+-var twoProduct = require("two-product")
+-var twoSum = require("two-sum")
++module.exports = float2rat
+ 
+-module.exports = scaleLinearExpansion
++var rat = require('big-rat')
+ 
+-function scaleLinearExpansion(e, scale) {
+-  var n = e.length
+-  if(n === 1) {
+-    var ts = twoProduct(e[0], scale)
+-    if(ts[0]) {
+-      return ts
+-    }
+-    return [ ts[1] ]
+-  }
+-  var g = new Array(2 * n)
+-  var q = [0.1, 0.1]
+-  var t = [0.1, 0.1]
+-  var count = 0
+-  twoProduct(e[0], scale, q)
+-  if(q[0]) {
+-    g[count++] = q[0]
+-  }
+-  for(var i=1; i<n; ++i) {
+-    twoProduct(e[i], scale, t)
+-    var pq = q[1]
+-    twoSum(pq, t[0], q)
+-    if(q[0]) {
+-      g[count++] = q[0]
+-    }
+-    var a = t[1]
+-    var b = q[1]
+-    var x = a + b
+-    var bv = x - a
+-    var y = b - bv
+-    q[1] = x
+-    if(y) {
+-      g[count++] = y
+-    }
+-  }
+-  if(q[1]) {
+-    g[count++] = q[1]
+-  }
+-  if(count === 0) {
+-    g[count++] = 0.0
++function float2rat(v) {
++  var result = new Array(v.length)
++  for(var i=0; i<v.length; ++i) {
++    result[i] = rat(v[i])
+   }
+-  g.length = count
+-  return g
++  return result
+ }
+-},{"two-product":240,"two-sum":241}],227:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = robustSubtract
++},{"big-rat":21}],209:[function(require,module,exports){
++'use strict'
+ 
+-//Easy case: Add two scalars
+-function scalarScalar(a, b) {
+-  var x = a + b
+-  var bv = x - a
+-  var av = x - bv
+-  var br = b - bv
+-  var ar = a - av
+-  var y = ar + br
+-  if(y) {
+-    return [y, x]
++var rat = require('big-rat')
++var mul = require('big-rat/mul')
++
++module.exports = muls
++
++function muls(a, x) {
++  var s = rat(x)
++  var n = a.length
++  var r = new Array(n)
++  for(var i=0; i<n; ++i) {
++    r[i] = mul(a[i], s)
+   }
+-  return [x]
++  return r
+ }
+ 
+-function robustSubtract(e, f) {
+-  var ne = e.length|0
+-  var nf = f.length|0
+-  if(ne === 1 && nf === 1) {
+-    return scalarScalar(e[0], -f[0])
+-  }
+-  var n = ne + nf
+-  var g = new Array(n)
+-  var count = 0
+-  var eptr = 0
+-  var fptr = 0
+-  var abs = Math.abs
+-  var ei = e[eptr]
+-  var ea = abs(ei)
+-  var fi = -f[fptr]
+-  var fa = abs(fi)
+-  var a, b
+-  if(ea < fa) {
+-    b = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
+-  } else {
+-    b = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
+-      fa = abs(fi)
+-    }
+-  }
+-  if((eptr < ne && ea < fa) || (fptr >= nf)) {
+-    a = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
+-  } else {
+-    a = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
+-      fa = abs(fi)
+-    }
+-  }
+-  var x = a + b
+-  var bv = x - a
+-  var y = b - bv
+-  var q0 = y
+-  var q1 = x
+-  var _x, _bv, _av, _br, _ar
+-  while(eptr < ne && fptr < nf) {
+-    if(ea < fa) {
+-      a = ei
+-      eptr += 1
+-      if(eptr < ne) {
+-        ei = e[eptr]
+-        ea = abs(ei)
+-      }
+-    } else {
+-      a = fi
+-      fptr += 1
+-      if(fptr < nf) {
+-        fi = -f[fptr]
+-        fa = abs(fi)
+-      }
+-    }
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
++},{"big-rat":21,"big-rat/mul":30}],210:[function(require,module,exports){
++'use strict'
++
++var bnsub = require('big-rat/sub')
++
++module.exports = sub
++
++function sub(a, b) {
++  var n = a.length
++  var r = new Array(n)
++    for(var i=0; i<n; ++i) {
++    r[i] = bnsub(a[i], b[i])
+   }
+-  while(eptr < ne) {
+-    a = ei
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
++  return r
++}
++
++},{"big-rat/sub":32}],211:[function(require,module,exports){
++'use strict'
++
++var compareCell = require('compare-cell')
++var compareOrientedCell = require('compare-oriented-cell')
++var orientation = require('cell-orientation')
++
++module.exports = reduceCellComplex
++
++function reduceCellComplex(cells) {
++  cells.sort(compareOrientedCell)
++  var n = cells.length
++  var ptr = 0
++  for(var i=0; i<n; ++i) {
++    var c = cells[i]
++    var o = orientation(c)
++    if(o === 0) {
++      continue
+     }
+-  }
+-  while(fptr < nf) {
+-    a = fi
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    } 
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
++    if(ptr > 0) {
++      var f = cells[ptr-1]
++      if(compareCell(c, f) === 0 &&
++         orientation(f)    !== o) {
++        ptr -= 1
++        continue
++      }
+     }
++    cells[ptr++] = c
+   }
+-  if(q0) {
+-    g[count++] = q0
+-  }
+-  if(q1) {
+-    g[count++] = q1
++  cells.length = ptr
++  return cells
++}
++
++},{"cell-orientation":54,"compare-cell":63,"compare-oriented-cell":64}],212:[function(require,module,exports){
++/*!
++ * repeat-string <https://github.com/jonschlinkert/repeat-string>
++ *
++ * Copyright (c) 2014-2015, Jon Schlinkert.
++ * Licensed under the MIT License.
++ */
++
++'use strict';
++
++/**
++ * Results cache
++ */
++
++var res = '';
++var cache;
++
++/**
++ * Expose `repeat`
++ */
++
++module.exports = repeat;
++
++/**
++ * Repeat the given `string` the specified `number`
++ * of times.
++ *
++ * **Example:**
++ *
++ * ```js
++ * var repeat = require('repeat-string');
++ * repeat('A', 5);
++ * //=> AAAAA
++ * ```
++ *
++ * @param {String} `string` The string to repeat
++ * @param {Number} `number` The number of times to repeat the string
++ * @return {String} Repeated string
++ * @api public
++ */
++
++function repeat(str, num) {
++  if (typeof str !== 'string') {
++    throw new TypeError('repeat-string expects a string.');
+   }
+-  if(!count) {
+-    g[count++] = 0.0  
++
++  // cover common, quick use cases
++  if (num === 1) return str;
++  if (num === 2) return str + str;
++
++  var max = str.length * num;
++  if (cache !== str || typeof cache === 'undefined') {
++    cache = str;
++    res = '';
+   }
+-  g.length = count
+-  return g
+-}
+-},{}],228:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = linearExpansionSum
++  while (max > res.length && num > 0) {
++    if (num & 1) {
++      res += str;
++    }
+ 
+-//Easy case: Add two scalars
+-function scalarScalar(a, b) {
+-  var x = a + b
+-  var bv = x - a
+-  var av = x - bv
+-  var br = b - bv
+-  var ar = a - av
+-  var y = ar + br
+-  if(y) {
+-    return [y, x]
++    num >>= 1;
++    if (!num) break;
++    str += str;
+   }
+-  return [x]
++
++  return res.substr(0, max);
+ }
+ 
+-function linearExpansionSum(e, f) {
+-  var ne = e.length|0
+-  var nf = f.length|0
+-  if(ne === 1 && nf === 1) {
+-    return scalarScalar(e[0], f[0])
++
++},{}],213:[function(require,module,exports){
++(function (global){
++module.exports =
++  global.performance &&
++  global.performance.now ? function now() {
++    return performance.now()
++  } : Date.now || function now() {
++    return +new Date
+   }
+-  var n = ne + nf
+-  var g = new Array(n)
+-  var count = 0
+-  var eptr = 0
+-  var fptr = 0
+-  var abs = Math.abs
+-  var ei = e[eptr]
+-  var ea = abs(ei)
+-  var fi = f[fptr]
+-  var fa = abs(fi)
+-  var a, b
+-  if(ea < fa) {
+-    b = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
+-  } else {
+-    b = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
+-      fa = abs(fi)
++
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{}],214:[function(require,module,exports){
++"use strict"
++
++module.exports = compressExpansion
++
++function compressExpansion(e) {
++  var m = e.length
++  var Q = e[e.length-1]
++  var bottom = m
++  for(var i=m-2; i>=0; --i) {
++    var a = Q
++    var b = e[i]
++    Q = a + b
++    var bv = Q - a
++    var q = b - bv
++    if(q) {
++      e[--bottom] = Q
++      Q = q
+     }
+   }
+-  if((eptr < ne && ea < fa) || (fptr >= nf)) {
+-    a = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
+-  } else {
+-    a = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
+-      fa = abs(fi)
++  var top = 0
++  for(var i=bottom; i<m; ++i) {
++    var a = e[i]
++    var b = Q
++    Q = a + b
++    var bv = Q - a
++    var q = b - bv
++    if(q) {
++      e[top++] = q
+     }
+   }
+-  var x = a + b
+-  var bv = x - a
+-  var y = b - bv
+-  var q0 = y
+-  var q1 = x
+-  var _x, _bv, _av, _br, _ar
+-  while(eptr < ne && fptr < nf) {
+-    if(ea < fa) {
+-      a = ei
+-      eptr += 1
+-      if(eptr < ne) {
+-        ei = e[eptr]
+-        ea = abs(ei)
+-      }
+-    } else {
+-      a = fi
+-      fptr += 1
+-      if(fptr < nf) {
+-        fi = f[fptr]
+-        fa = abs(fi)
++  e[top++] = Q
++  e.length = top
++  return e
++}
++},{}],215:[function(require,module,exports){
++"use strict"
++
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
++var robustScale = require("robust-scale")
++var compress = require("robust-compress")
++
++var NUM_EXPANDED = 6
++
++function cofactor(m, c) {
++  var result = new Array(m.length-1)
++  for(var i=1; i<m.length; ++i) {
++    var r = result[i-1] = new Array(m.length-1)
++    for(var j=0,k=0; j<m.length; ++j) {
++      if(j === c) {
++        continue
+       }
+-    }
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-  }
+-  while(eptr < ne) {
+-    a = ei
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
++      r[k++] = m[i][j]
+     }
+   }
+-  while(fptr < nf) {
+-    a = fi
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    } 
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
++  return result
++}
++
++function matrix(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = new Array(n)
++    for(var j=0; j<n; ++j) {
++      result[i][j] = ["m[", i, "][", j, "]"].join("")
+     }
+   }
+-  if(q0) {
+-    g[count++] = q0
+-  }
+-  if(q1) {
+-    g[count++] = q1
++  return result
++}
++
++function sign(n) {
++  if(n & 1) {
++    return "-"
+   }
+-  if(!count) {
+-    g[count++] = 0.0  
++  return ""
++}
++
++function generateSum(expr) {
++  if(expr.length === 1) {
++    return expr[0]
++  } else if(expr.length === 2) {
++    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  } else {
++    var m = expr.length>>1
++    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
+   }
+-  g.length = count
+-  return g
+ }
+-},{}],229:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = toSuperScript
++function determinant(m) {
++  if(m.length === 2) {
++    return ["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")
++  } else {
++    var expr = []
++    for(var i=0; i<m.length; ++i) {
++      expr.push(["scale(", determinant(cofactor(m, i)), ",", sign(i), m[0][i], ")"].join(""))
++    }
++    return generateSum(expr)
++  }
++}
+ 
+-var SUPERSCRIPTS = {
+-  ' ': ' ',
+-  '0': '⁰',
+-  '1': '¹',
+-  '2': '²',
+-  '3': '³',
+-  '4': '⁴',
+-  '5': '⁵',
+-  '6': '⁶',
+-  '7': '⁷',
+-  '8': '⁸',
+-  '9': '⁹',
+-  '+': '⁺',
+-  '-': '⁻',
+-  'a': 'ᵃ',
+-  'b': 'ᵇ',
+-  'c': 'ᶜ',
+-  'd': 'ᵈ',
+-  'e': 'ᵉ',
+-  'f': 'ᶠ',
+-  'g': 'ᵍ',
+-  'h': 'ʰ',
+-  'i': 'ⁱ',
+-  'j': 'ʲ',
+-  'k': 'ᵏ',
+-  'l': 'ˡ',
+-  'm': 'ᵐ',
+-  'n': 'ⁿ',
+-  'o': 'ᵒ',
+-  'p': 'ᵖ',
+-  'r': 'ʳ',
+-  's': 'ˢ',
+-  't': 'ᵗ',
+-  'u': 'ᵘ',
+-  'v': 'ᵛ',
+-  'w': 'ʷ',
+-  'x': 'ˣ',
+-  'y': 'ʸ',
+-  'z': 'ᶻ'
++function compileDeterminant(n) {
++  var proc = new Function("sum", "scale", "prod", "compress", [
++    "function robustDeterminant",n, "(m){return compress(", 
++      determinant(matrix(n)),
++    ")};return robustDeterminant", n].join(""))
++  return proc(robustSum, robustScale, twoProduct, compress)
+ }
+ 
+-function toSuperScript(x) {
+-  return x.split('').map(function(c) {
+-    if(c in SUPERSCRIPTS) {
+-      return SUPERSCRIPTS[c]
+-    }
+-    return ''
+-  }).join('')
++var CACHE = [
++  function robustDeterminant0() { return [0] },
++  function robustDeterminant1(m) { return [m[0][0]] }
++]
++
++function generateDispatch() {
++  while(CACHE.length < NUM_EXPANDED) {
++    CACHE.push(compileDeterminant(CACHE.length))
++  }
++  var procArgs = []
++  var code = ["function robustDeterminant(m){switch(m.length){"]
++  for(var i=0; i<NUM_EXPANDED; ++i) {
++    procArgs.push("det" + i)
++    code.push("case ", i, ":return det", i, "(m);")
++  }
++  code.push("}\
++var det=CACHE[m.length];\
++if(!det)\
++det=CACHE[m.length]=gen(m.length);\
++return det(m);\
++}\
++return robustDeterminant")
++  procArgs.push("CACHE", "gen", code.join(""))
++  var proc = Function.apply(undefined, procArgs)
++  module.exports = proc.apply(undefined, CACHE.concat([CACHE, compileDeterminant]))
++  for(var i=0; i<CACHE.length; ++i) {
++    module.exports[i] = CACHE[i]
++  }
+ }
+ 
+-},{}],230:[function(require,module,exports){
++generateDispatch()
++},{"robust-compress":214,"robust-scale":221,"robust-sum":224,"two-product":244}],216:[function(require,module,exports){
+ "use strict"
+ 
+-var pool = require("typedarray-pool")
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
+ 
+-module.exports = createSurfaceExtractor
++module.exports = robustDotProduct
+ 
+-//Helper macros
+-function array(i) {
+-  return "a" + i
+-}
+-function data(i) {
+-  return "d" + i
+-}
+-function cube(i,bitmask) {
+-  return "c" + i + "_" + bitmask
+-}
+-function shape(i) {
+-  return "s" + i
+-}
+-function stride(i,j) {
+-  return "t" + i + "_" + j
+-}
+-function offset(i) {
+-  return "o" + i
+-}
+-function scalar(i) {
+-  return "x" + i
+-}
+-function pointer(i) {
+-  return "p" + i
++function robustDotProduct(a, b) {
++  var r = twoProduct(a[0], b[0])
++  for(var i=1; i<a.length; ++i) {
++    r = robustSum(r, twoProduct(a[i], b[i]))
++  }
++  return r
+ }
+-function delta(i,bitmask) {
+-  return "d" + i + "_" + bitmask
++},{"robust-sum":224,"two-product":244}],217:[function(require,module,exports){
++"use strict"
++
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
++var robustDiff = require("robust-subtract")
++var robustScale = require("robust-scale")
++
++var NUM_EXPAND = 6
++
++function cofactor(m, c) {
++  var result = new Array(m.length-1)
++  for(var i=1; i<m.length; ++i) {
++    var r = result[i-1] = new Array(m.length-1)
++    for(var j=0,k=0; j<m.length; ++j) {
++      if(j === c) {
++        continue
++      }
++      r[k++] = m[i][j]
++    }
++  }
++  return result
+ }
+-function index(i) {
+-  return "i" + i
++
++function matrix(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = new Array(n)
++    for(var j=0; j<n; ++j) {
++      result[i][j] = ["m", j, "[", (n-i-2), "]"].join("")
++    }
++  }
++  return result
+ }
+-function step(i,j) {
+-  return "u" + i + "_" + j
++
++function generateSum(expr) {
++  if(expr.length === 1) {
++    return expr[0]
++  } else if(expr.length === 2) {
++    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  } else {
++    var m = expr.length>>1
++    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++  }
+ }
+-function pcube(bitmask) {
+-  return "b" + bitmask
++
++function makeProduct(a, b) {
++  if(a.charAt(0) === "m") {
++    if(b.charAt(0) === "w") {
++      var toks = a.split("[")
++      return ["w", b.substr(1), "m", toks[0].substr(1)].join("")
++    } else {
++      return ["prod(", a, ",", b, ")"].join("")
++    }
++  } else {
++    return makeProduct(b, a)
++  }
+ }
+-function qcube(bitmask) {
+-  return "y" + bitmask
++
++function sign(s) {
++  if(s & 1 !== 0) {
++    return "-"
++  }
++  return ""
+ }
+-function pdelta(bitmask) {
+-  return "e" + bitmask
++
++function determinant(m) {
++  if(m.length === 2) {
++    return [["diff(", makeProduct(m[0][0], m[1][1]), ",", makeProduct(m[1][0], m[0][1]), ")"].join("")]
++  } else {
++    var expr = []
++    for(var i=0; i<m.length; ++i) {
++      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
++    }
++    return expr
++  }
+ }
+-function vert(i) {
+-  return "v" + i
++
++function makeSquare(d, n) {
++  var terms = []
++  for(var i=0; i<n-2; ++i) {
++    terms.push(["prod(m", d, "[", i, "],m", d, "[", i, "])"].join(""))
++  }
++  return generateSum(terms)
+ }
+-var VERTEX_IDS = "V"
+-var PHASES = "P"
+-var VERTEX_COUNT = "N"
+-var POOL_SIZE = "Q"
+-var POINTER = "X"
+-var TEMPORARY = "T"
+ 
+-function permBitmask(dimension, mask, order) {
+-  var r = 0
+-  for(var i=0; i<dimension; ++i) {
+-    if(mask & (1<<i)) {
+-      r |= (1<<order[i])
++function orientation(n) {
++  var pos = []
++  var neg = []
++  var m = matrix(n)
++  for(var i=0; i<n; ++i) {
++    m[0][i] = "1"
++    m[n-1][i] = "w"+i
++  } 
++  for(var i=0; i<n; ++i) {
++    if((i&1)===0) {
++      pos.push.apply(pos,determinant(cofactor(m, i)))
++    } else {
++      neg.push.apply(neg,determinant(cofactor(m, i)))
+     }
+   }
+-  return r
++  var posExpr = generateSum(pos)
++  var negExpr = generateSum(neg)
++  var funcName = "exactInSphere" + n
++  var funcArgs = []
++  for(var i=0; i<n; ++i) {
++    funcArgs.push("m" + i)
++  }
++  var code = ["function ", funcName, "(", funcArgs.join(), "){"]
++  for(var i=0; i<n; ++i) {
++    code.push("var w",i,"=",makeSquare(i,n),";")
++    for(var j=0; j<n; ++j) {
++      if(j !== i) {
++        code.push("var w",i,"m",j,"=scale(w",i,",m",j,"[0]);")
++      }
++    }
++  }
++  code.push("var p=", posExpr, ",n=", negExpr, ",d=diff(p,n);return d[d.length-1];}return ", funcName)
++  var proc = new Function("sum", "diff", "prod", "scale", code.join(""))
++  return proc(robustSum, robustDiff, twoProduct, robustScale)
+ }
+ 
+-//Generates the surface procedure
+-function compileSurfaceProcedure(vertexFunc, faceFunc, phaseFunc, scalarArgs, order, typesig) {
+-  var arrayArgs = typesig.length
+-  var dimension = order.length
++function inSphere0() { return 0 }
++function inSphere1() { return 0 }
++function inSphere2() { return 0 }
+ 
+-  if(dimension < 2) {
+-    throw new Error("ndarray-extract-contour: Dimension must be at least 2")
++var CACHED = [
++  inSphere0,
++  inSphere1,
++  inSphere2
++]
++
++function slowInSphere(args) {
++  var proc = CACHED[args.length]
++  if(!proc) {
++    proc = CACHED[args.length] = orientation(args.length)
+   }
++  return proc.apply(undefined, args)
++}
+ 
+-  var funcName = "extractContour" + order.join("_")
+-  var code = []
+-  var vars = []
++function generateInSphereTest() {
++  while(CACHED.length <= NUM_EXPAND) {
++    CACHED.push(orientation(CACHED.length))
++  }
+   var args = []
+-
+-  //Assemble arguments
+-  for(var i=0; i<arrayArgs; ++i) {
+-    args.push(array(i))  
++  var procArgs = ["slow"]
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    args.push("a" + i)
++    procArgs.push("o" + i)
+   }
+-  for(var i=0; i<scalarArgs; ++i) {
+-    args.push(scalar(i))
++  var code = [
++    "function testInSphere(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
++  ]
++  for(var i=2; i<=NUM_EXPAND; ++i) {
++    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
+   }
++  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return testInSphere")
++  procArgs.push(code.join(""))
+ 
+-  //Shape
+-  for(var i=0; i<dimension; ++i) {
+-    vars.push(shape(i) + "=" + array(0) + ".shape[" + i + "]|0")
+-  }
+-  //Data, stride, offset pointers
+-  for(var i=0; i<arrayArgs; ++i) {
+-    vars.push(data(i) + "=" + array(i) + ".data",
+-              offset(i) + "=" + array(i) + ".offset|0")
+-    for(var j=0; j<dimension; ++j) {
+-      vars.push(stride(i,j) + "=" + array(i) + ".stride[" + j + "]|0")
+-    }
++  var proc = Function.apply(undefined, procArgs)
++
++  module.exports = proc.apply(undefined, [slowInSphere].concat(CACHED))
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    module.exports[i] = CACHED[i]
+   }
+-  //Pointer, delta and cube variables
+-  for(var i=0; i<arrayArgs; ++i) {
+-    vars.push(pointer(i) + "=" + offset(i))
+-    vars.push(cube(i,0))
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      var ptrStr = []
+-      for(var k=0; k<dimension; ++k) {
+-        if(j & (1<<k)) {
+-          ptrStr.push("-" + stride(i,k))
++}
++
++generateInSphereTest()
++},{"robust-scale":221,"robust-subtract":223,"robust-sum":224,"two-product":244}],218:[function(require,module,exports){
++"use strict"
++
++var determinant = require("robust-determinant")
++
++var NUM_EXPAND = 6
++
++function generateSolver(n) {
++  var funcName = "robustLinearSolve" + n + "d"
++  var code = ["function ", funcName, "(A,b){return ["]
++  for(var i=0; i<n; ++i) {
++    code.push("det([")
++    for(var j=0; j<n; ++j) {
++      if(j > 0) {
++        code.push(",")
++      }
++      code.push("[")
++      for(var k=0; k<n; ++k) {
++        if(k > 0) {
++          code.push(",")
++        }
++        if(k === i) {
++          code.push("+b[", j, "]")
++        } else {
++          code.push("+A[", j, "][", k, "]")
+         }
+       }
+-      vars.push(delta(i,j) + "=(" + ptrStr.join("") + ")|0")
+-      vars.push(cube(i,j) + "=0")
++      code.push("]")
+     }
++    code.push("]),")
+   }
+-  //Create step variables
+-  for(var i=0; i<arrayArgs; ++i) {
+-    for(var j=0; j<dimension; ++j) {
+-      var stepVal = [ stride(i,order[j]) ]
+-      if(j > 0) {
+-        stepVal.push(stride(i, order[j-1]) + "*" + shape(order[j-1]) )
+-      }
+-      vars.push(step(i,order[j]) + "=(" + stepVal.join("-") + ")|0")
+-    }
++  code.push("det(A)]}return ", funcName)
++  var proc = new Function("det", code.join(""))
++  if(n < 6) {
++    return proc(determinant[n])
+   }
+-  //Create index variables
+-  for(var i=0; i<dimension; ++i) {
+-    vars.push(index(i) + "=0")
++  return proc(determinant)
++}
++
++function robustLinearSolve0d() {
++  return [ 0 ]
++}
++
++function robustLinearSolve1d(A, b) {
++  return [ [ b[0] ], [ A[0][0] ] ]
++}
++
++var CACHE = [
++  robustLinearSolve0d,
++  robustLinearSolve1d
++]
++
++function generateDispatch() {
++  while(CACHE.length < NUM_EXPAND) {
++    CACHE.push(generateSolver(CACHE.length))
+   }
+-  //Vertex count
+-  vars.push(VERTEX_COUNT + "=0")
+-  //Compute pool size, initialize pool step
+-  var sizeVariable = ["2"]
+-  for(var i=dimension-2; i>=0; --i) {
+-    sizeVariable.push(shape(order[i]))
++  var procArgs = []
++  var code = ["function dispatchLinearSolve(A,b){switch(A.length){"]
++  for(var i=0; i<NUM_EXPAND; ++i) {
++    procArgs.push("s" + i)
++    code.push("case ", i, ":return s", i, "(A,b);")
+   }
+-  //Previous phases and vertex_ids
+-  vars.push(POOL_SIZE + "=(" + sizeVariable.join("*") + ")|0",
+-            PHASES + "=mallocUint32(" + POOL_SIZE + ")",
+-            VERTEX_IDS + "=mallocUint32(" + POOL_SIZE + ")",
+-            POINTER + "=0")
+-  //Create cube variables for phases
+-  vars.push(pcube(0) + "=0")
+-  for(var j=1; j<(1<<dimension); ++j) {
+-    var cubeDelta = []
+-    var cubeStep = [ ]
+-    for(var k=0; k<dimension; ++k) {
+-      if(j & (1<<k)) {
+-        if(cubeStep.length === 0) {
+-          cubeDelta.push("1")
+-        } else {
+-          cubeDelta.unshift(cubeStep.join("*"))
+-        }
++  code.push("}var s=CACHE[A.length];if(!s)s=CACHE[A.length]=g(A.length);return s(A,b)}return dispatchLinearSolve")
++  procArgs.push("CACHE", "g", code.join(""))
++  var proc = Function.apply(undefined, procArgs)
++  module.exports = proc.apply(undefined, CACHE.concat([CACHE, generateSolver]))
++  for(var i=0; i<NUM_EXPAND; ++i) {
++    module.exports[i] = CACHE[i]
++  }
++}
++
++generateDispatch()
++},{"robust-determinant":215}],219:[function(require,module,exports){
++"use strict"
++
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
++var robustScale = require("robust-scale")
++var robustSubtract = require("robust-subtract")
++
++var NUM_EXPAND = 5
++
++var EPSILON     = 1.1102230246251565e-16
++var ERRBOUND3   = (3.0 + 16.0 * EPSILON) * EPSILON
++var ERRBOUND4   = (7.0 + 56.0 * EPSILON) * EPSILON
++
++function cofactor(m, c) {
++  var result = new Array(m.length-1)
++  for(var i=1; i<m.length; ++i) {
++    var r = result[i-1] = new Array(m.length-1)
++    for(var j=0,k=0; j<m.length; ++j) {
++      if(j === c) {
++        continue
+       }
+-      cubeStep.push(shape(order[k]))
+-    }
+-    var signFlag = ""
+-    if(cubeDelta[0].indexOf(shape(order[dimension-2])) < 0) {
+-      signFlag = "-"
++      r[k++] = m[i][j]
+     }
+-    var jperm = permBitmask(dimension, j, order)
+-    vars.push(pdelta(jperm) + "=(-" + cubeDelta.join("-") + ")|0",
+-              qcube(jperm) + "=(" + signFlag + cubeDelta.join("-") + ")|0",
+-              pcube(jperm) + "=0")
+   }
+-  vars.push(vert(0) + "=0", TEMPORARY + "=0")
++  return result
++}
+ 
+-  function forLoopBegin(i, start) {
+-    code.push("for(", index(order[i]), "=", start, ";",
+-      index(order[i]), "<", shape(order[i]), ";",
+-      "++", index(order[i]), "){")
++function matrix(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = new Array(n)
++    for(var j=0; j<n; ++j) {
++      result[i][j] = ["m", j, "[", (n-i-1), "]"].join("")
++    }
+   }
++  return result
++}
+ 
+-  function forLoopEnd(i) {
+-    for(var j=0; j<arrayArgs; ++j) {
+-      code.push(pointer(j), "+=", step(j,order[i]), ";")
+-    }
+-    code.push("}")
++function sign(n) {
++  if(n & 1) {
++    return "-"
+   }
++  return ""
++}
+ 
+-  function fillEmptySlice(k) {
+-    for(var i=k-1; i>=0; --i) {
+-      forLoopBegin(i, 0) 
+-    }
+-    var phaseFuncArgs = []
+-    for(var i=0; i<arrayArgs; ++i) {
+-      if(typesig[i]) {
+-        phaseFuncArgs.push(data(i) + ".get(" + pointer(i) + ")")
+-      } else {
+-        phaseFuncArgs.push(data(i) + "[" + pointer(i) + "]")
+-      }
+-    }
+-    for(var i=0; i<scalarArgs; ++i) {
+-      phaseFuncArgs.push(scalar(i))
+-    }
+-    code.push(PHASES, "[", POINTER, "++]=phase(", phaseFuncArgs.join(), ");")
+-    for(var i=0; i<k; ++i) {
+-      forLoopEnd(i)
+-    }
+-    for(var j=0; j<arrayArgs; ++j) {
+-      code.push(pointer(j), "+=", step(j,order[k]), ";")
+-    }
++function generateSum(expr) {
++  if(expr.length === 1) {
++    return expr[0]
++  } else if(expr.length === 2) {
++    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  } else {
++    var m = expr.length>>1
++    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
+   }
++}
+ 
+-  function processGridCell(mask) {
+-    //Read in local data
+-    for(var i=0; i<arrayArgs; ++i) {
+-      if(typesig[i]) {
+-        code.push(cube(i,0), "=", data(i), ".get(", pointer(i), ");")
+-      } else {
+-        code.push(cube(i,0), "=", data(i), "[", pointer(i), "];")
+-      }
++function determinant(m) {
++  if(m.length === 2) {
++    return [["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")]
++  } else {
++    var expr = []
++    for(var i=0; i<m.length; ++i) {
++      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
+     }
++    return expr
++  }
++}
+ 
+-    //Read in phase
+-    var phaseFuncArgs = []
+-    for(var i=0; i<arrayArgs; ++i) {
+-      phaseFuncArgs.push(cube(i,0))
+-    }
+-    for(var i=0; i<scalarArgs; ++i) {
+-      phaseFuncArgs.push(scalar(i))
+-    }
+-    
+-    code.push(pcube(0), "=", PHASES, "[", POINTER, "]=phase(", phaseFuncArgs.join(), ");")
+-    
+-    //Read in other cube data
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      code.push(pcube(j), "=", PHASES, "[", POINTER, "+", pdelta(j), "];")
++function orientation(n) {
++  var pos = []
++  var neg = []
++  var m = matrix(n)
++  var args = []
++  for(var i=0; i<n; ++i) {
++    if((i&1)===0) {
++      pos.push.apply(pos, determinant(cofactor(m, i)))
++    } else {
++      neg.push.apply(neg, determinant(cofactor(m, i)))
+     }
++    args.push("m" + i)
++  }
++  var posExpr = generateSum(pos)
++  var negExpr = generateSum(neg)
++  var funcName = "orientation" + n + "Exact"
++  var code = ["function ", funcName, "(", args.join(), "){var p=", posExpr, ",n=", negExpr, ",d=sub(p,n);\
++return d[d.length-1];};return ", funcName].join("")
++  var proc = new Function("sum", "prod", "scale", "sub", code)
++  return proc(robustSum, twoProduct, robustScale, robustSubtract)
++}
+ 
+-    //Check for boundary crossing
+-    var vertexPredicate = []
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      vertexPredicate.push("(" + pcube(0) + "!==" + pcube(j) + ")")
+-    }
+-    code.push("if(", vertexPredicate.join("||"), "){")
++var orientation3Exact = orientation(3)
++var orientation4Exact = orientation(4)
+ 
+-    //Read in boundary data
+-    var vertexArgs = []
+-    for(var i=0; i<dimension; ++i) {
+-      vertexArgs.push(index(i))
+-    }
+-    for(var i=0; i<arrayArgs; ++i) {
+-      vertexArgs.push(cube(i,0))
+-      for(var j=1; j<(1<<dimension); ++j) {
+-        if(typesig[i]) {
+-          code.push(cube(i,j), "=", data(i), ".get(", pointer(i), "+", delta(i,j), ");")
+-        } else {
+-          code.push(cube(i,j), "=", data(i), "[", pointer(i), "+", delta(i,j), "];")
+-        }
+-        vertexArgs.push(cube(i,j))
++var CACHED = [
++  function orientation0() { return 0 },
++  function orientation1() { return 0 },
++  function orientation2(a, b) { 
++    return b[0] - a[0]
++  },
++  function orientation3(a, b, c) {
++    var l = (a[1] - c[1]) * (b[0] - c[0])
++    var r = (a[0] - c[0]) * (b[1] - c[1])
++    var det = l - r
++    var s
++    if(l > 0) {
++      if(r <= 0) {
++        return det
++      } else {
++        s = l + r
++      }
++    } else if(l < 0) {
++      if(r >= 0) {
++        return det
++      } else {
++        s = -(l + r)
+       }
++    } else {
++      return det
+     }
+-    for(var i=0; i<(1<<dimension); ++i) {
+-      vertexArgs.push(pcube(i))
++    var tol = ERRBOUND3 * s
++    if(det >= tol || det <= -tol) {
++      return det
+     }
+-    for(var i=0; i<scalarArgs; ++i) {
+-      vertexArgs.push(scalar(i))
++    return orientation3Exact(a, b, c)
++  },
++  function orientation4(a,b,c,d) {
++    var adx = a[0] - d[0]
++    var bdx = b[0] - d[0]
++    var cdx = c[0] - d[0]
++    var ady = a[1] - d[1]
++    var bdy = b[1] - d[1]
++    var cdy = c[1] - d[1]
++    var adz = a[2] - d[2]
++    var bdz = b[2] - d[2]
++    var cdz = c[2] - d[2]
++    var bdxcdy = bdx * cdy
++    var cdxbdy = cdx * bdy
++    var cdxady = cdx * ady
++    var adxcdy = adx * cdy
++    var adxbdy = adx * bdy
++    var bdxady = bdx * ady
++    var det = adz * (bdxcdy - cdxbdy) 
++            + bdz * (cdxady - adxcdy)
++            + cdz * (adxbdy - bdxady)
++    var permanent = (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * Math.abs(adz)
++                  + (Math.abs(cdxady) + Math.abs(adxcdy)) * Math.abs(bdz)
++                  + (Math.abs(adxbdy) + Math.abs(bdxady)) * Math.abs(cdz)
++    var tol = ERRBOUND4 * permanent
++    if ((det > tol) || (-det > tol)) {
++      return det
+     }
++    return orientation4Exact(a,b,c,d)
++  }
++]
+ 
+-    //Generate vertex
+-    code.push("vertex(", vertexArgs.join(), ");",
+-      vert(0), "=", VERTEX_IDS, "[", POINTER, "]=", VERTEX_COUNT, "++;")
+-
+-    //Check for face crossings
+-    var base = (1<<dimension)-1
+-    var corner = pcube(base)
+-    for(var j=0; j<dimension; ++j) {
+-      if((mask & ~(1<<j))===0) {
+-        //Check face
+-        var subset = base^(1<<j)
+-        var edge = pcube(subset)
+-        var faceArgs = [ ]
+-        for(var k=subset; k>0; k=(k-1)&subset) {
+-          faceArgs.push(VERTEX_IDS + "[" + POINTER + "+" + pdelta(k) + "]")
+-        }
+-        faceArgs.push(vert(0))
+-        for(var k=0; k<arrayArgs; ++k) {
+-          if(j&1) {
+-            faceArgs.push(cube(k,base), cube(k,subset))
+-          } else {
+-            faceArgs.push(cube(k,subset), cube(k,base))
+-          }
+-        }
+-        if(j&1) {
+-          faceArgs.push(corner, edge)
+-        } else {
+-          faceArgs.push(edge, corner)
+-        }
+-        for(var k=0; k<scalarArgs; ++k) {
+-          faceArgs.push(scalar(k))
+-        }
+-        code.push("if(", corner, "!==", edge, "){",
+-          "face(", faceArgs.join(), ")}")
+-      }
+-    }
+-    
+-    //Increment pointer, close off if statement
+-    code.push("}",
+-      POINTER, "+=1;")
++function slowOrient(args) {
++  var proc = CACHED[args.length]
++  if(!proc) {
++    proc = CACHED[args.length] = orientation(args.length)
+   }
++  return proc.apply(undefined, args)
++}
+ 
+-  function flip() {
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      code.push(TEMPORARY, "=", pdelta(j), ";",
+-                pdelta(j), "=", qcube(j), ";",
+-                qcube(j), "=", TEMPORARY, ";")
+-    }
++function generateOrientationProc() {
++  while(CACHED.length <= NUM_EXPAND) {
++    CACHED.push(orientation(CACHED.length))
++  }
++  var args = []
++  var procArgs = ["slow"]
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    args.push("a" + i)
++    procArgs.push("o" + i)
++  }
++  var code = [
++    "function getOrientation(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
++  ]
++  for(var i=2; i<=NUM_EXPAND; ++i) {
++    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
+   }
++  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return getOrientation")
++  procArgs.push(code.join(""))
+ 
+-  function createLoop(i, mask) {
+-    if(i < 0) {
+-      processGridCell(mask)
+-      return
+-    }
+-    fillEmptySlice(i)
+-    code.push("if(", shape(order[i]), ">0){",
+-      index(order[i]), "=1;")
+-    createLoop(i-1, mask|(1<<order[i]))
+-
+-    for(var j=0; j<arrayArgs; ++j) {
+-      code.push(pointer(j), "+=", step(j,order[i]), ";")
+-    }
+-    if(i === dimension-1) {
+-      code.push(POINTER, "=0;")
+-      flip()
+-    }
+-    forLoopBegin(i, 2)
+-    createLoop(i-1, mask)
+-    if(i === dimension-1) {
+-      code.push("if(", index(order[dimension-1]), "&1){",
+-        POINTER, "=0;}")
+-      flip()
+-    }
+-    forLoopEnd(i)
+-    code.push("}")
++  var proc = Function.apply(undefined, procArgs)
++  module.exports = proc.apply(undefined, [slowOrient].concat(CACHED))
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    module.exports[i] = CACHED[i]
+   }
++}
+ 
+-  createLoop(dimension-1, 0)
+-
+-  //Release scratch memory
+-  code.push("freeUint32(", VERTEX_IDS, ");freeUint32(", PHASES, ");")
++generateOrientationProc()
++},{"robust-scale":221,"robust-subtract":223,"robust-sum":224,"two-product":244}],220:[function(require,module,exports){
++"use strict"
+ 
+-  //Compile and link procedure
+-  var procedureCode = [
+-    "'use strict';",
+-    "function ", funcName, "(", args.join(), "){",
+-      "var ", vars.join(), ";",
+-      code.join(""),
+-    "}",
+-    "return ", funcName ].join("")
++var robustSum = require("robust-sum")
++var robustScale = require("robust-scale")
+ 
+-  var proc = new Function(
+-    "vertex", 
+-    "face", 
+-    "phase", 
+-    "mallocUint32", 
+-    "freeUint32",
+-    procedureCode)
+-  return proc(
+-    vertexFunc, 
+-    faceFunc, 
+-    phaseFunc, 
+-    pool.mallocUint32, 
+-    pool.freeUint32)
+-}
++module.exports = robustProduct
+ 
+-function createSurfaceExtractor(args) {
+-  function error(msg) {
+-    throw new Error("ndarray-extract-contour: " + msg)
++function robustProduct(a, b) {
++  if(a.length === 1) {
++    return robustScale(b, a[0])
+   }
+-  if(typeof args !== "object") {
+-    error("Must specify arguments")
++  if(b.length === 1) {
++    return robustScale(a, b[0])
+   }
+-  var order = args.order
+-  if(!Array.isArray(order)) {
+-    error("Must specify order")
++  if(a.length === 0 || b.length === 0) {
++    return [0]
+   }
+-  var arrays = args.arrayArguments||1
+-  if(arrays < 1) {
+-    error("Must have at least one array argument")
++  var r = [0]
++  if(a.length < b.length) {
++    for(var i=0; i<a.length; ++i) {
++      r = robustSum(r, robustScale(b, a[i]))
++    }
++  } else {
++    for(var i=0; i<b.length; ++i) {
++      r = robustSum(r, robustScale(a, b[i]))
++    }    
+   }
+-  var scalars = args.scalarArguments||0
+-  if(scalars < 0) {
+-    error("Scalar arg count must be > 0")
++  return r
++}
++},{"robust-scale":221,"robust-sum":224}],221:[function(require,module,exports){
++"use strict"
++
++var twoProduct = require("two-product")
++var twoSum = require("two-sum")
++
++module.exports = scaleLinearExpansion
++
++function scaleLinearExpansion(e, scale) {
++  var n = e.length
++  if(n === 1) {
++    var ts = twoProduct(e[0], scale)
++    if(ts[0]) {
++      return ts
++    }
++    return [ ts[1] ]
+   }
+-  if(typeof args.vertex !== "function") {
+-    error("Must specify vertex creation function")
++  var g = new Array(2 * n)
++  var q = [0.1, 0.1]
++  var t = [0.1, 0.1]
++  var count = 0
++  twoProduct(e[0], scale, q)
++  if(q[0]) {
++    g[count++] = q[0]
+   }
+-  if(typeof args.cell !== "function") {
+-    error("Must specify cell creation function")
++  for(var i=1; i<n; ++i) {
++    twoProduct(e[i], scale, t)
++    var pq = q[1]
++    twoSum(pq, t[0], q)
++    if(q[0]) {
++      g[count++] = q[0]
++    }
++    var a = t[1]
++    var b = q[1]
++    var x = a + b
++    var bv = x - a
++    var y = b - bv
++    q[1] = x
++    if(y) {
++      g[count++] = y
++    }
+   }
+-  if(typeof args.phase !== "function") {
+-    error("Must specify phase function")
++  if(q[1]) {
++    g[count++] = q[1]
+   }
+-  var getters = args.getters || []
+-  var typesig = new Array(arrays)
+-  for(var i=0; i<arrays; ++i) {
+-    if(getters.indexOf(i) >= 0) {
+-      typesig[i] = true
+-    } else {
+-      typesig[i] = false
+-    }
++  if(count === 0) {
++    g[count++] = 0.0
+   }
+-  return compileSurfaceProcedure(
+-    args.vertex,
+-    args.cell,
+-    args.phase,
+-    scalars,
+-    order,
+-    typesig)
++  g.length = count
++  return g
+ }
+-},{"typedarray-pool":242}],231:[function(require,module,exports){
+-// transliterated from the python snippet here:
+-// http://en.wikipedia.org/wiki/Lanczos_approximation
++},{"two-product":244,"two-sum":245}],222:[function(require,module,exports){
++"use strict"
+ 
+-var g = 7;
+-var p = [
+-    0.99999999999980993,
+-    676.5203681218851,
+-    -1259.1392167224028,
+-    771.32342877765313,
+-    -176.61502916214059,
+-    12.507343278686905,
+-    -0.13857109526572012,
+-    9.9843695780195716e-6,
+-    1.5056327351493116e-7
+-];
++module.exports = segmentsIntersect
+ 
+-var g_ln = 607/128;
+-var p_ln = [
+-    0.99999999999999709182,
+-    57.156235665862923517,
+-    -59.597960355475491248,
+-    14.136097974741747174,
+-    -0.49191381609762019978,
+-    0.33994649984811888699e-4,
+-    0.46523628927048575665e-4,
+-    -0.98374475304879564677e-4,
+-    0.15808870322491248884e-3,
+-    -0.21026444172410488319e-3,
+-    0.21743961811521264320e-3,
+-    -0.16431810653676389022e-3,
+-    0.84418223983852743293e-4,
+-    -0.26190838401581408670e-4,
+-    0.36899182659531622704e-5
+-];
++var orient = require("robust-orientation")[3]
+ 
+-// Spouge approximation (suitable for large arguments)
+-function lngamma(z) {
++function checkCollinear(a0, a1, b0, b1) {
+ 
+-    if(z < 0) return Number('0/0');
+-    var x = p_ln[0];
+-    for(var i = p_ln.length - 1; i > 0; --i) x += p_ln[i] / (z + i);
+-    var t = z + g_ln + 0.5;
+-    return .5*Math.log(2*Math.PI)+(z+.5)*Math.log(t)-t+Math.log(x)-Math.log(z);
+-}
++  for(var d=0; d<2; ++d) {
++    var x0 = a0[d]
++    var y0 = a1[d]
++    var l0 = Math.min(x0, y0)
++    var h0 = Math.max(x0, y0)    
+ 
+-module.exports = function gamma (z) {
+-    if (z < 0.5) {
+-        return Math.PI / (Math.sin(Math.PI * z) * gamma(1 - z));
+-    }
+-    else if(z > 100) return Math.exp(lngamma(z));
+-    else {
+-        z -= 1;
+-        var x = p[0];
+-        for (var i = 1; i < g + 2; i++) {
+-            x += p[i] / (z + i);
+-        }
+-        var t = z + g + 0.5;
++    var x1 = b0[d]
++    var y1 = b1[d]
++    var l1 = Math.min(x1, y1)
++    var h1 = Math.max(x1, y1)    
+ 
+-        return Math.sqrt(2 * Math.PI)
+-            * Math.pow(t, z + 0.5)
+-            * Math.exp(-t)
+-            * x
+-        ;
++    if(h1 < l0 || h0 < l1) {
++      return false
+     }
+-};
+-
+-module.exports.log = lngamma;
+-
+-},{}],232:[function(require,module,exports){
+-"use strict"
++  }
+ 
+-module.exports = permutationSign
++  return true
++}
+ 
+-var BRUTE_FORCE_CUTOFF = 32
++function segmentsIntersect(a0, a1, b0, b1) {
++  var x0 = orient(a0, b0, b1)
++  var y0 = orient(a1, b0, b1)
++  if((x0 > 0 && y0 > 0) || (x0 < 0 && y0 < 0)) {
++    return false
++  }
+ 
+-var pool = require("typedarray-pool")
++  var x1 = orient(b0, a0, a1)
++  var y1 = orient(b1, a0, a1)
++  if((x1 > 0 && y1 > 0) || (x1 < 0 && y1 < 0)) {
++    return false
++  }
+ 
+-function permutationSign(p) {
+-  var n = p.length
+-  if(n < BRUTE_FORCE_CUTOFF) {
+-    //Use quadratic algorithm for small n
+-    var sgn = 1
+-    for(var i=0; i<n; ++i) {
+-      for(var j=0; j<i; ++j) {
+-        if(p[i] < p[j]) {
+-          sgn = -sgn
+-        } else if(p[i] === p[j]) {
+-          return 0
+-        }
+-      }
+-    }
+-    return sgn
+-  } else {
+-    //Otherwise use linear time algorithm
+-    var visited = pool.mallocUint8(n)
+-    for(var i=0; i<n; ++i) {
+-      visited[i] = 0
+-    }
+-    var sgn = 1
+-    for(var i=0; i<n; ++i) {
+-      if(!visited[i]) {
+-        var count = 1
+-        visited[i] = 1
+-        for(var j=p[i]; j!==i; j=p[j]) {
+-          if(visited[j]) {
+-            pool.freeUint8(visited)
+-            return 0
+-          }
+-          count += 1
+-          visited[j] = 1
+-        }
+-        if(!(count & 1)) {
+-          sgn = -sgn
+-        }
+-      }
+-    }
+-    pool.freeUint8(visited)
+-    return sgn
++  //Check for degenerate collinear case
++  if(x0 === 0 && y0 === 0 && x1 === 0 && y1 === 0) {
++    return checkCollinear(a0, a1, b0, b1)
+   }
++
++  return true
+ }
+-},{"typedarray-pool":242}],233:[function(require,module,exports){
++},{"robust-orientation":219}],223:[function(require,module,exports){
+ "use strict"
+ 
+-var pool = require("typedarray-pool")
+-var inverse = require("invert-permutation")
++module.exports = robustSubtract
+ 
+-function rank(permutation) {
+-  var n = permutation.length
+-  switch(n) {
+-    case 0:
+-    case 1:
+-      return 0
+-    case 2:
+-      return permutation[1]
+-    default:
+-      break
+-  }
+-  var p = pool.mallocUint32(n)
+-  var pinv = pool.mallocUint32(n)
+-  var r = 0, s, t, i
+-  inverse(permutation, pinv)
+-  for(i=0; i<n; ++i) {
+-    p[i] = permutation[i]
+-  }
+-  for(i=n-1; i>0; --i) {
+-    t = pinv[i]
+-    s = p[i]
+-    p[i] = p[t]
+-    p[t] = s
+-    pinv[i] = pinv[s]
+-    pinv[s] = t
+-    r = (r + s) * i
++//Easy case: Add two scalars
++function scalarScalar(a, b) {
++  var x = a + b
++  var bv = x - a
++  var av = x - bv
++  var br = b - bv
++  var ar = a - av
++  var y = ar + br
++  if(y) {
++    return [y, x]
+   }
+-  pool.freeUint32(pinv)
+-  pool.freeUint32(p)
+-  return r
++  return [x]
+ }
+ 
+-function unrank(n, r, p) {
+-  switch(n) {
+-    case 0:
+-      if(p) { return p }
+-      return []
+-    case 1:
+-      if(p) {
+-        p[0] = 0
+-        return p
+-      } else {
+-        return [0]
++function robustSubtract(e, f) {
++  var ne = e.length|0
++  var nf = f.length|0
++  if(ne === 1 && nf === 1) {
++    return scalarScalar(e[0], -f[0])
++  }
++  var n = ne + nf
++  var g = new Array(n)
++  var count = 0
++  var eptr = 0
++  var fptr = 0
++  var abs = Math.abs
++  var ei = e[eptr]
++  var ea = abs(ei)
++  var fi = -f[fptr]
++  var fa = abs(fi)
++  var a, b
++  if(ea < fa) {
++    b = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    b = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
++      fa = abs(fi)
++    }
++  }
++  if((eptr < ne && ea < fa) || (fptr >= nf)) {
++    a = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    a = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
++      fa = abs(fi)
++    }
++  }
++  var x = a + b
++  var bv = x - a
++  var y = b - bv
++  var q0 = y
++  var q1 = x
++  var _x, _bv, _av, _br, _ar
++  while(eptr < ne && fptr < nf) {
++    if(ea < fa) {
++      a = ei
++      eptr += 1
++      if(eptr < ne) {
++        ei = e[eptr]
++        ea = abs(ei)
+       }
+-    case 2:
+-      if(p) {
+-        if(r) {
+-          p[0] = 0
+-          p[1] = 1
+-        } else {
+-          p[0] = 1
+-          p[1] = 0
+-        }
+-        return p
+-      } else {
+-        return r ? [0,1] : [1,0]
++    } else {
++      a = fi
++      fptr += 1
++      if(fptr < nf) {
++        fi = -f[fptr]
++        fa = abs(fi)
+       }
+-    default:
+-      break
++    }
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
+   }
+-  p = p || new Array(n)
+-  var s, t, i, nf=1
+-  p[0] = 0
+-  for(i=1; i<n; ++i) {
+-    p[i] = i
+-    nf = (nf*i)|0
++  while(eptr < ne) {
++    a = ei
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++    }
+   }
+-  for(i=n-1; i>0; --i) {
+-    s = (r / nf)|0
+-    r = (r - s * nf)|0
+-    nf = (nf / i)|0
+-    t = p[i]|0
+-    p[i] = p[s]|0
+-    p[s] = t|0
++  while(fptr < nf) {
++    a = fi
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    } 
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
++    }
++  }
++  if(q0) {
++    g[count++] = q0
++  }
++  if(q1) {
++    g[count++] = q1
++  }
++  if(!count) {
++    g[count++] = 0.0  
+   }
+-  return p
++  g.length = count
++  return g
+ }
+-
+-exports.rank = rank
+-exports.unrank = unrank
+-
+-},{"invert-permutation":234,"typedarray-pool":242}],234:[function(require,module,exports){
++},{}],224:[function(require,module,exports){
+ "use strict"
+ 
+-function invertPermutation(pi, result) {
+-  result = result || new Array(pi.length)
+-  for(var i=0; i<pi.length; ++i) {
+-    result[pi[i]] = i
++module.exports = linearExpansionSum
++
++//Easy case: Add two scalars
++function scalarScalar(a, b) {
++  var x = a + b
++  var bv = x - a
++  var av = x - bv
++  var br = b - bv
++  var ar = a - av
++  var y = ar + br
++  if(y) {
++    return [y, x]
+   }
+-  return result
++  return [x]
+ }
+ 
+-module.exports = invertPermutation
+-},{}],235:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = triangulateCube
+-
+-var perm = require("permutation-rank")
+-var sgn = require("permutation-parity")
+-var gamma = require("gamma")
+-
+-function triangulateCube(dimension) {
+-  if(dimension < 0) {
+-    return [ ]
++function linearExpansionSum(e, f) {
++  var ne = e.length|0
++  var nf = f.length|0
++  if(ne === 1 && nf === 1) {
++    return scalarScalar(e[0], f[0])
+   }
+-  if(dimension === 0) {
+-    return [ [0] ]
++  var n = ne + nf
++  var g = new Array(n)
++  var count = 0
++  var eptr = 0
++  var fptr = 0
++  var abs = Math.abs
++  var ei = e[eptr]
++  var ea = abs(ei)
++  var fi = f[fptr]
++  var fa = abs(fi)
++  var a, b
++  if(ea < fa) {
++    b = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    b = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++      fa = abs(fi)
++    }
+   }
+-  var dfactorial = Math.round(gamma(dimension+1))|0
+-  var result = []
+-  for(var i=0; i<dfactorial; ++i) {
+-    var p = perm.unrank(dimension, i)
+-    var cell = [ 0 ]
+-    var v = 0
+-    for(var j=0; j<p.length; ++j) {
+-      v += (1<<p[j])
+-      cell.push(v)
++  if((eptr < ne && ea < fa) || (fptr >= nf)) {
++    a = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
+     }
+-    if(sgn(p) < 1) {
+-      cell[0] = v
+-      cell[dimension] = 0
++  } else {
++    a = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++      fa = abs(fi)
+     }
+-    result.push(cell)
+   }
+-  return result
++  var x = a + b
++  var bv = x - a
++  var y = b - bv
++  var q0 = y
++  var q1 = x
++  var _x, _bv, _av, _br, _ar
++  while(eptr < ne && fptr < nf) {
++    if(ea < fa) {
++      a = ei
++      eptr += 1
++      if(eptr < ne) {
++        ei = e[eptr]
++        ea = abs(ei)
++      }
++    } else {
++      a = fi
++      fptr += 1
++      if(fptr < nf) {
++        fi = f[fptr]
++        fa = abs(fi)
++      }
++    }
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++  }
++  while(eptr < ne) {
++    a = ei
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++    }
++  }
++  while(fptr < nf) {
++    a = fi
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    } 
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++    }
++  }
++  if(q0) {
++    g[count++] = q0
++  }
++  if(q1) {
++    g[count++] = q1
++  }
++  if(!count) {
++    g[count++] = 0.0  
++  }
++  g.length = count
++  return g
+ }
+-},{"gamma":231,"permutation-parity":232,"permutation-rank":233}],236:[function(require,module,exports){
+-module.exports = require('cwise-compiler')({
+-    args: ['array', {
+-        offset: [1],
+-        array: 0
+-    }, 'scalar', 'scalar', 'index'],
+-    pre: {
+-        "body": "{}",
+-        "args": [],
+-        "thisVars": [],
+-        "localVars": []
+-    },
+-    post: {
+-        "body": "{}",
+-        "args": [],
+-        "thisVars": [],
+-        "localVars": []
+-    },
+-    body: {
+-        "body": "{\n        var _inline_1_da = _inline_1_arg0_ - _inline_1_arg3_\n        var _inline_1_db = _inline_1_arg1_ - _inline_1_arg3_\n        if((_inline_1_da >= 0) !== (_inline_1_db >= 0)) {\n          _inline_1_arg2_.push(_inline_1_arg4_[0] + 0.5 + 0.5 * (_inline_1_da + _inline_1_db) / (_inline_1_da - _inline_1_db))\n        }\n      }",
+-        "args": [{
+-            "name": "_inline_1_arg0_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg1_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg2_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg3_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 2
+-        }, {
+-            "name": "_inline_1_arg4_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }],
+-        "thisVars": [],
+-        "localVars": ["_inline_1_da", "_inline_1_db"]
+-    },
+-    funcName: 'zeroCrossings'
+-})
+-
+-},{"cwise-compiler":96}],237:[function(require,module,exports){
++},{}],225:[function(require,module,exports){
+ "use strict"
+ 
+-module.exports = findZeroCrossings
++module.exports = function signum(x) {
++  if(x < 0) { return -1 }
++  if(x > 0) { return 1 }
++  return 0.0
++}
++},{}],226:[function(require,module,exports){
++'use strict'
+ 
+-var core = require("./lib/zc-core")
++module.exports = boundary
+ 
+-function findZeroCrossings(array, level) {
+-  var cross = []
+-  level = +level || 0.0
+-  core(array.hi(array.shape[0]-1), cross, level)
+-  return cross
++var bnd = require('boundary-cells')
++var reduce = require('reduce-simplicial-complex')
++
++function boundary(cells) {
++  return reduce(bnd(cells))
+ }
+-},{"./lib/zc-core":236}],238:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = surfaceNets
++},{"boundary-cells":37,"reduce-simplicial-complex":211}],227:[function(require,module,exports){
++'use strict'
+ 
+-var generateContourExtractor = require("ndarray-extract-contour")
+-var triangulateCube = require("triangulate-hypercube")
+-var zeroCrossings = require("zero-crossings")
++module.exports = extractContour
+ 
+-function buildSurfaceNets(order, dtype) {
+-  var dimension = order.length
+-  var code = ["'use strict';"]
+-  var funcName = "surfaceNets" + order.join("_") + "d" + dtype
++var ndarray = require('ndarray')
++var pool    = require('typedarray-pool')
++var ndsort  = require('ndarray-sort')
+ 
+-  //Contour extraction function
+-  code.push(
+-    "var contour=genContour({",
+-      "order:[", order.join(), "],",
+-      "scalarArguments: 3,",
+-      "phase:function phaseFunc(p,a,b,c) { return (p > c)|0 },")
+-  if(dtype === "generic") {
+-    code.push("getters:[0],")
+-  }
++var contourAlgorithm = require('./lib/codegen')
+ 
+-  //Generate vertex function
+-  var cubeArgs = []
+-  var extraArgs = []
+-  for(var i=0; i<dimension; ++i) {
+-    cubeArgs.push("d" + i)
+-    extraArgs.push("d" + i)
+-  }
+-  for(var i=0; i<(1<<dimension); ++i) {
+-    cubeArgs.push("v" + i)
+-    extraArgs.push("v" + i)
+-  }
+-  for(var i=0; i<(1<<dimension); ++i) {
+-    cubeArgs.push("p" + i)
+-    extraArgs.push("p" + i)
+-  }
+-  cubeArgs.push("a", "b", "c")
+-  extraArgs.push("a", "c")
+-  code.push("vertex:function vertexFunc(", cubeArgs.join(), "){")
+-  //Mask args together
+-  var maskStr = []
+-  for(var i=0; i<(1<<dimension); ++i) {
+-    maskStr.push("(p" + i + "<<" + i + ")")
++function getDimension(cells) {
++  var numCells = cells.length
++  var d = 0
++  for(var i=0; i<numCells; ++i) {
++    d = Math.max(d, cells[i].length)|0
+   }
+-  //Generate variables and giganto switch statement
+-  code.push("var m=(", maskStr.join("+"), ")|0;if(m===0||m===", (1<<(1<<dimension))-1, "){return}")
+-  var extraFuncs = []
+-  var currentFunc = []
+-  if(1<<(1<<dimension) <= 128) {
+-    code.push("switch(m){")
+-    currentFunc = code
+-  } else {
+-    code.push("switch(m>>>7){")
++  return d-1
++}
++
++function getSigns(values, level) {
++  var numVerts    = values.length
++  var vertexSigns = pool.mallocUint8(numVerts)
++  for(var i=0; i<numVerts; ++i) {
++    vertexSigns[i] = (values[i] < level)|0
+   }
+-  for(var i=0; i<1<<(1<<dimension); ++i) {
+-    if(1<<(1<<dimension) > 128) {
+-      if((i%128)===0) {
+-        if(extraFuncs.length > 0) {
+-          currentFunc.push("}}")
+-        }
+-        var efName = "vExtra" + extraFuncs.length
+-        code.push("case ", (i>>>7), ":", efName, "(m&0x7f,", extraArgs.join(), ");break;")
+-        currentFunc = [
+-          "function ", efName, "(m,", extraArgs.join(), "){switch(m){"
+-        ]
+-        extraFuncs.push(currentFunc)
+-      }  
++  return vertexSigns
++}
++
++function getEdges(cells, d) {
++  var numCells = cells.length
++  var maxEdges = ((d * (d+1)/2) * numCells)|0
++  var edges    = pool.mallocUint32(maxEdges*2)
++  var ePtr     = 0
++  for(var i=0; i<numCells; ++i) {
++    var c = cells[i]
++    var d = c.length
++    for(var j=0; j<d; ++j) {
++      for(var k=0; k<j; ++k) {
++        var a = c[k]
++        var b = c[j]
++        edges[ePtr++] = Math.min(a,b)|0
++        edges[ePtr++] = Math.max(a,b)|0
++      }
+     }
+-    currentFunc.push("case ", (i&0x7f), ":")
+-    var crossings = new Array(dimension)
+-    var denoms = new Array(dimension)
+-    var crossingCount = new Array(dimension)
+-    var bias = new Array(dimension)
+-    var totalCrossings = 0
+-    for(var j=0; j<dimension; ++j) {
+-      crossings[j] = []
+-      denoms[j] = []
+-      crossingCount[j] = 0
+-      bias[j] = 0
++  }
++  var nedges = (ePtr/2)|0
++  ndsort(ndarray(edges, [nedges,2])) 
++  var ptr = 2
++  for(var i=2; i<ePtr; i+=2) {
++    if(edges[i-2] === edges[i] &&
++       edges[i-1] === edges[i+1]) {
++      continue
+     }
+-    for(var j=0; j<(1<<dimension); ++j) {
+-      for(var k=0; k<dimension; ++k) {
+-        var u = j ^ (1<<k)
+-        if(u > j) {
+-          continue
+-        }
+-        if(!(i&(1<<u)) !== !(i&(1<<j))) {
+-          var sign = 1
+-          if(i&(1<<u)) {
+-            denoms[k].push("v" + u + "-v" + j)
+-          } else {
+-            denoms[k].push("v" + j + "-v" + u)
+-            sign = -sign
+-          }
+-          if(sign < 0) {
+-            crossings[k].push("-v" + j + "-v" + u)
+-            crossingCount[k] += 2
+-          } else {
+-            crossings[k].push("v" + j + "+v" + u)
+-            crossingCount[k] -= 2            
+-          }
+-          totalCrossings += 1
+-          for(var l=0; l<dimension; ++l) {
+-            if(l === k) {
+-              continue
+-            }
+-            if(u&(1<<l)) {
+-              bias[l] += 1
+-            } else {
+-              bias[l] -= 1
+-            }
+-          }
+-        }
+-      }
++    edges[ptr++] = edges[i]
++    edges[ptr++] = edges[i+1]
++  }
++
++  return ndarray(edges, [(ptr/2)|0, 2])
++}
++
++function getCrossingWeights(edges, values, signs, level) {
++  var edata     = edges.data
++  var numEdges  = edges.shape[0]
++  var weights   = pool.mallocDouble(numEdges)
++  var ptr       = 0
++  for(var i=0; i<numEdges; ++i) {
++    var a  = edata[2*i]
++    var b  = edata[2*i+1]
++    if(signs[a] === signs[b]) {
++      continue
+     }
+-    var vertexStr = []
+-    for(var k=0; k<dimension; ++k) {
+-      if(crossings[k].length === 0) {
+-        vertexStr.push("d" + k + "-0.5")
+-      } else {
+-        var cStr = ""
+-        if(crossingCount[k] < 0) {
+-          cStr = crossingCount[k] + "*c"
+-        } else if(crossingCount[k] > 0) {
+-          cStr = "+" + crossingCount[k] + "*c"
+-        }
+-        var weight = 0.5 * (crossings[k].length / totalCrossings)
+-        var shift = 0.5 + 0.5 * (bias[k] / totalCrossings)
+-        vertexStr.push("d" + k + "-" + shift + "-" + weight + "*(" + crossings[k].join("+") + cStr + ")/(" + denoms[k].join("+") + ")")
+-        
++    var va = values[a]
++    var vb = values[b]
++    edata[2*ptr]     = a
++    edata[2*ptr+1]   = b
++    weights[ptr++]   = (vb - level) / (vb - va)
++  }
++  edges.shape[0] = ptr
++  return ndarray(weights, [ptr])
++}
++
++function getCascade(edges, numVerts) {
++  var result   = pool.mallocInt32(numVerts*2)
++  var numEdges = edges.shape[0]
++  var edata    = edges.data
++  result[0]    = 0
++  var lastV    = 0
++  for(var i=0; i<numEdges; ++i) {
++    var a = edata[2*i]
++    if(a !== lastV) {
++      result[2*lastV+1] = i
++      while(++lastV < a) {
++        result[2*lastV] = i
++        result[2*lastV+1] = i
+       }
++      result[2*lastV] = i
+     }
+-    currentFunc.push("a.push([", vertexStr.join(), "]);",
+-      "break;")
+   }
+-  code.push("}},")
+-  if(extraFuncs.length > 0) {
+-    currentFunc.push("}}")
++  result[2*lastV+1] = numEdges
++  while(++lastV < numVerts) {
++    result[2*lastV] = result[2*lastV+1] = numEdges
+   }
++  return result
++}
+ 
+-  //Create face function
+-  var faceArgs = []
+-  for(var i=0; i<(1<<(dimension-1)); ++i) {
+-    faceArgs.push("v" + i)
++function unpackEdges(edges) {
++  var ne = edges.shape[0]|0
++  var edata = edges.data
++  var result = new Array(ne)
++  for(var i=0; i<ne; ++i) {
++    result[i] = [edata[2*i], edata[2*i+1]]
+   }
+-  faceArgs.push("c0", "c1", "p0", "p1", "a", "b", "c")
+-  code.push("cell:function cellFunc(", faceArgs.join(), "){")
++  return result
++}
+ 
+-  var facets = triangulateCube(dimension-1)
+-  code.push("if(p0){b.push(",
+-    facets.map(function(f) {
+-      return "[" + f.map(function(v) {
+-        return "v" + v
+-      }) + "]"
+-    }).join(), ")}else{b.push(",
+-    facets.map(function(f) {
+-      var e = f.slice()
+-      e.reverse()
+-      return "[" + e.map(function(v) {
+-        return "v" + v
+-      }) + "]"
+-    }).join(),
+-    ")}}});function ", funcName, "(array,level){var verts=[],cells=[];contour(array,verts,cells,level);return {positions:verts,cells:cells};} return ", funcName, ";")
++function extractContour(cells, values, level, d) {
++  level = level||0.0
++
++  //If user didn't specify `d`, use brute force scan
++  if(typeof d === 'undefined') {
++    d = getDimension(cells)
++  }
+ 
+-  for(var i=0; i<extraFuncs.length; ++i) {
+-    code.push(extraFuncs[i].join(""))
++  //Count number of cells
++  var numCells = cells.length
++  if(numCells === 0 || d < 1) {
++    return {
++      cells:         [],
++      vertexIds:     [],
++      vertexWeights: []
++    }
+   }
+ 
+-  //Compile and link
+-  var proc = new Function("genContour", code.join(""))
+-  return proc(generateContourExtractor)
+-}
++  //Read in vertex signs
++  var vertexSigns = getSigns(values, +level)
+ 
+-//1D case: Need to handle specially
+-function mesh1D(array, level) {
+-  var zc = zeroCrossings(array, level)
+-  var n = zc.length
+-  var npos = new Array(n)
+-  var ncel = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    npos[i] = [ zc[i] ]
+-    ncel[i] = [ i ]
+-  }
++  //First get 1-skeleton, find all crossings
++  var edges   = getEdges(cells, d)
++  var weights = getCrossingWeights(edges, values, vertexSigns, +level)
++
++  //Build vertex cascade to speed up binary search
++  var vcascade = getCascade(edges, values.length|0)
++
++  //Then construct cells
++  var faces = contourAlgorithm(d)(cells, edges.data, vcascade, vertexSigns)
++
++  //Unpack data into pretty format
++  var uedges   = unpackEdges(edges)
++  var uweights = [].slice.call(weights.data, 0, weights.shape[0])
++
++  //Release data
++  pool.free(vertexSigns)
++  pool.free(edges.data)
++  pool.free(weights.data)
++  pool.free(vcascade)
++  
+   return {
+-    positions: npos,
+-    cells: ncel
++    cells:         faces,
++    vertexIds:     uedges,
++    vertexWeights: uweights
+   }
+ }
++},{"./lib/codegen":228,"ndarray":191,"ndarray-sort":189,"typedarray-pool":246}],228:[function(require,module,exports){
++'use strict'
++
++module.exports = getPolygonizer
++
++var pool = require('typedarray-pool')
++var createMSTable = require('marching-simplex-table')
+ 
+ var CACHE = {}
+ 
+-function surfaceNets(array,level) {
+-  if(array.dimension <= 0) {
+-    return { positions: [], cells: [] }
+-  } else if(array.dimension === 1) {
+-    return mesh1D(array, level)
+-  }
+-  var typesig = array.order.join() + "-" + array.dtype
+-  var proc = CACHE[typesig]
+-  var level = (+level) || 0.0
+-  if(!proc) {
+-    proc = CACHE[typesig] = buildSurfaceNets(array.order, array.dtype)
++function createCellPolygonizer(d) {
++  var maxCellSize = 0
++  var tables = new Array(d+1)
++  tables[0] = [ [] ]
++  for(var i=1; i<=d; ++i) {
++    var tab = tables[i] = createMSTable(i)
++    for(var j=0; j<tab.length; ++j) {
++      maxCellSize = Math.max(maxCellSize, tab[i].length)
++    }
+   }
+-  return proc(array,level)
+-}
+-},{"ndarray-extract-contour":230,"triangulate-hypercube":235,"zero-crossings":237}],239:[function(require,module,exports){
+-// TinyColor v1.3.0
+-// https://github.com/bgrins/TinyColor
+-// Brian Grinstead, MIT License
+-
+-(function() {
+ 
+-var trimLeft = /^\s+/,
+-    trimRight = /\s+$/,
+-    tinyCounter = 0,
+-    math = Math,
+-    mathRound = math.round,
+-    mathMin = math.min,
+-    mathMax = math.max,
+-    mathRandom = math.random;
++  var code  = [
++  'function B(C,E,i,j){',
++    'var a=Math.min(i,j)|0,b=Math.max(i,j)|0,l=C[2*a],h=C[2*a+1];',
++    'while(l<h){',
++      'var m=(l+h)>>1,v=E[2*m+1];',
++      'if(v===b){return m}',
++      'if(b<v){h=m}else{l=m+1}',
++    '}',
++    'return l;',
++  '};',
++  'function getContour', d, 'd(F,E,C,S){',
++    'var n=F.length,R=[];',
++    'for(var i=0;i<n;++i){var c=F[i],l=c.length;'
++  ]
+ 
+-function tinycolor (color, opts) {
++  function generateCase(facets) {
++    if(facets.length <= 0) {
++      return
++    }
++    code.push('R.push(')
++    for(var i=0; i<facets.length; ++i) {
++      var facet = facets[i]
++      if(i > 0) {
++        code.push(',')
++      }
++      code.push('[')
++      for(var j=0; j<facet.length; ++j) {
++        var f = facet[j]
++        if(j > 0) {
++          code.push(',')
++        }
++        code.push('B(C,E,c[', f[0], '],c[', f[1], '])')
++      }
++      code.push(']')
++    }
++    code.push(');')
++  }
+ 
+-    color = (color) ? color : '';
+-    opts = opts || { };
++  for(var i=d+1; i>1; --i) {
++    if(i < d+1) {
++      code.push('else ')
++    }
++    code.push('if(l===', i, '){')
+ 
+-    // If input is already a tinycolor, return itself
+-    if (color instanceof tinycolor) {
+-       return color;
++    //Generate mask
++    var maskStr = []
++    for(var j=0; j<i; ++j) {
++      maskStr.push('(S[c['+j+']]<<'+j+')')
+     }
+-    // If we are called as a function, call using new instead
+-    if (!(this instanceof tinycolor)) {
+-        return new tinycolor(color, opts);
++
++    //Perform table look up
++    code.push('var M=', maskStr.join('+'), 
++      ';if(M===0||M===', (1<<i)-1, 
++        '){continue}switch(M){')
++
++    var tab = tables[i-1]
++    for(var j=0; j<tab.length; ++j) {
++      code.push('case ', j, ':')
++      generateCase(tab[j])
++      code.push('break;')
+     }
++    code.push('}}')
++  }
++  code.push('}return R;};return getContour', d, 'd')
+ 
+-    var rgb = inputToRGB(color);
+-    this._originalInput = color,
+-    this._r = rgb.r,
+-    this._g = rgb.g,
+-    this._b = rgb.b,
+-    this._a = rgb.a,
+-    this._roundA = mathRound(100*this._a) / 100,
+-    this._format = opts.format || rgb.format;
+-    this._gradientType = opts.gradientType;
++  var proc = new Function('pool', code.join(''))
++  return proc(pool)
++}
+ 
+-    // Don't let the range of [0,255] come back in [0,1].
+-    // Potentially lose a little bit of precision here, but will fix issues where
+-    // .5 gets interpreted as half of the total, instead of half of 1
+-    // If it was supposed to be 128, this was already taken care of by `inputToRgb`
+-    if (this._r < 1) { this._r = mathRound(this._r); }
+-    if (this._g < 1) { this._g = mathRound(this._g); }
+-    if (this._b < 1) { this._b = mathRound(this._b); }
++function getPolygonizer(d) {
++  var alg = CACHE[d]
++  if(!alg) {
++    alg = CACHE[d] = createCellPolygonizer(d) 
++  }
++  return alg
++}
++},{"marching-simplex-table":170,"typedarray-pool":246}],229:[function(require,module,exports){
++"use strict"; "use restrict";
+ 
+-    this._ok = rgb.ok;
+-    this._tc_id = tinyCounter++;
++var bits      = require("bit-twiddle")
++  , UnionFind = require("union-find")
++
++//Returns the dimension of a cell complex
++function dimension(cells) {
++  var d = 0
++    , max = Math.max
++  for(var i=0, il=cells.length; i<il; ++i) {
++    d = max(d, cells[i].length)
++  }
++  return d-1
+ }
++exports.dimension = dimension
+ 
+-tinycolor.prototype = {
+-    isDark: function() {
+-        return this.getBrightness() < 128;
+-    },
+-    isLight: function() {
+-        return !this.isDark();
+-    },
+-    isValid: function() {
+-        return this._ok;
+-    },
+-    getOriginalInput: function() {
+-      return this._originalInput;
+-    },
+-    getFormat: function() {
+-        return this._format;
+-    },
+-    getAlpha: function() {
+-        return this._a;
+-    },
+-    getBrightness: function() {
+-        //http://www.w3.org/TR/AERT#color-contrast
+-        var rgb = this.toRgb();
+-        return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
+-    },
+-    getLuminance: function() {
+-        //http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
+-        var rgb = this.toRgb();
+-        var RsRGB, GsRGB, BsRGB, R, G, B;
+-        RsRGB = rgb.r/255;
+-        GsRGB = rgb.g/255;
+-        BsRGB = rgb.b/255;
++//Counts the number of vertices in faces
++function countVertices(cells) {
++  var vc = -1
++    , max = Math.max
++  for(var i=0, il=cells.length; i<il; ++i) {
++    var c = cells[i]
++    for(var j=0, jl=c.length; j<jl; ++j) {
++      vc = max(vc, c[j])
++    }
++  }
++  return vc+1
++}
++exports.countVertices = countVertices
+ 
+-        if (RsRGB <= 0.03928) {R = RsRGB / 12.92;} else {R = Math.pow(((RsRGB + 0.055) / 1.055), 2.4);}
+-        if (GsRGB <= 0.03928) {G = GsRGB / 12.92;} else {G = Math.pow(((GsRGB + 0.055) / 1.055), 2.4);}
+-        if (BsRGB <= 0.03928) {B = BsRGB / 12.92;} else {B = Math.pow(((BsRGB + 0.055) / 1.055), 2.4);}
+-        return (0.2126 * R) + (0.7152 * G) + (0.0722 * B);
+-    },
+-    setAlpha: function(value) {
+-        this._a = boundAlpha(value);
+-        this._roundA = mathRound(100*this._a) / 100;
+-        return this;
+-    },
+-    toHsv: function() {
+-        var hsv = rgbToHsv(this._r, this._g, this._b);
+-        return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: this._a };
+-    },
+-    toHsvString: function() {
+-        var hsv = rgbToHsv(this._r, this._g, this._b);
+-        var h = mathRound(hsv.h * 360), s = mathRound(hsv.s * 100), v = mathRound(hsv.v * 100);
+-        return (this._a == 1) ?
+-          "hsv("  + h + ", " + s + "%, " + v + "%)" :
+-          "hsva(" + h + ", " + s + "%, " + v + "%, "+ this._roundA + ")";
+-    },
+-    toHsl: function() {
+-        var hsl = rgbToHsl(this._r, this._g, this._b);
+-        return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: this._a };
+-    },
+-    toHslString: function() {
+-        var hsl = rgbToHsl(this._r, this._g, this._b);
+-        var h = mathRound(hsl.h * 360), s = mathRound(hsl.s * 100), l = mathRound(hsl.l * 100);
+-        return (this._a == 1) ?
+-          "hsl("  + h + ", " + s + "%, " + l + "%)" :
+-          "hsla(" + h + ", " + s + "%, " + l + "%, "+ this._roundA + ")";
+-    },
+-    toHex: function(allow3Char) {
+-        return rgbToHex(this._r, this._g, this._b, allow3Char);
+-    },
+-    toHexString: function(allow3Char) {
+-        return '#' + this.toHex(allow3Char);
+-    },
+-    toHex8: function() {
+-        return rgbaToHex(this._r, this._g, this._b, this._a);
+-    },
+-    toHex8String: function() {
+-        return '#' + this.toHex8();
+-    },
+-    toRgb: function() {
+-        return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
+-    },
+-    toRgbString: function() {
+-        return (this._a == 1) ?
+-          "rgb("  + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ")" :
+-          "rgba(" + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ", " + this._roundA + ")";
+-    },
+-    toPercentageRgb: function() {
+-        return { r: mathRound(bound01(this._r, 255) * 100) + "%", g: mathRound(bound01(this._g, 255) * 100) + "%", b: mathRound(bound01(this._b, 255) * 100) + "%", a: this._a };
+-    },
+-    toPercentageRgbString: function() {
+-        return (this._a == 1) ?
+-          "rgb("  + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%)" :
+-          "rgba(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%, " + this._roundA + ")";
+-    },
+-    toName: function() {
+-        if (this._a === 0) {
+-            return "transparent";
+-        }
++//Returns a deep copy of cells
++function cloneCells(cells) {
++  var ncells = new Array(cells.length)
++  for(var i=0, il=cells.length; i<il; ++i) {
++    ncells[i] = cells[i].slice(0)
++  }
++  return ncells
++}
++exports.cloneCells = cloneCells
+ 
+-        if (this._a < 1) {
+-            return false;
++//Ranks a pair of cells up to permutation
++function compareCells(a, b) {
++  var n = a.length
++    , t = a.length - b.length
++    , min = Math.min
++  if(t) {
++    return t
++  }
++  switch(n) {
++    case 0:
++      return 0;
++    case 1:
++      return a[0] - b[0];
++    case 2:
++      var d = a[0]+a[1]-b[0]-b[1]
++      if(d) {
++        return d
++      }
++      return min(a[0],a[1]) - min(b[0],b[1])
++    case 3:
++      var l1 = a[0]+a[1]
++        , m1 = b[0]+b[1]
++      d = l1+a[2] - (m1+b[2])
++      if(d) {
++        return d
++      }
++      var l0 = min(a[0], a[1])
++        , m0 = min(b[0], b[1])
++        , d  = min(l0, a[2]) - min(m0, b[2])
++      if(d) {
++        return d
++      }
++      return min(l0+a[2], l1) - min(m0+b[2], m1)
++    
++    //TODO: Maybe optimize n=4 as well?
++    
++    default:
++      var as = a.slice(0)
++      as.sort()
++      var bs = b.slice(0)
++      bs.sort()
++      for(var i=0; i<n; ++i) {
++        t = as[i] - bs[i]
++        if(t) {
++          return t
+         }
++      }
++      return 0
++  }
++}
++exports.compareCells = compareCells
+ 
+-        return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
+-    },
+-    toFilter: function(secondColor) {
+-        var hex8String = '#' + rgbaToHex(this._r, this._g, this._b, this._a);
+-        var secondHex8String = hex8String;
+-        var gradientType = this._gradientType ? "GradientType = 1, " : "";
++function compareZipped(a, b) {
++  return compareCells(a[0], b[0])
++}
+ 
+-        if (secondColor) {
+-            var s = tinycolor(secondColor);
+-            secondHex8String = s.toHex8String();
+-        }
++//Puts a cell complex into normal order for the purposes of findCell queries
++function normalize(cells, attr) {
++  if(attr) {
++    var len = cells.length
++    var zipped = new Array(len)
++    for(var i=0; i<len; ++i) {
++      zipped[i] = [cells[i], attr[i]]
++    }
++    zipped.sort(compareZipped)
++    for(var i=0; i<len; ++i) {
++      cells[i] = zipped[i][0]
++      attr[i] = zipped[i][1]
++    }
++    return cells
++  } else {
++    cells.sort(compareCells)
++    return cells
++  }
++}
++exports.normalize = normalize
+ 
+-        return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
+-    },
+-    toString: function(format) {
+-        var formatSet = !!format;
+-        format = format || this._format;
++//Removes all duplicate cells in the complex
++function unique(cells) {
++  if(cells.length === 0) {
++    return []
++  }
++  var ptr = 1
++    , len = cells.length
++  for(var i=1; i<len; ++i) {
++    var a = cells[i]
++    if(compareCells(a, cells[i-1])) {
++      if(i === ptr) {
++        ptr++
++        continue
++      }
++      cells[ptr++] = a
++    }
++  }
++  cells.length = ptr
++  return cells
++}
++exports.unique = unique;
+ 
+-        var formattedString = false;
+-        var hasAlpha = this._a < 1 && this._a >= 0;
+-        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "name");
++//Finds a cell in a normalized cell complex
++function findCell(cells, c) {
++  var lo = 0
++    , hi = cells.length-1
++    , r  = -1
++  while (lo <= hi) {
++    var mid = (lo + hi) >> 1
++      , s   = compareCells(cells[mid], c)
++    if(s <= 0) {
++      if(s === 0) {
++        r = mid
++      }
++      lo = mid + 1
++    } else if(s > 0) {
++      hi = mid - 1
++    }
++  }
++  return r
++}
++exports.findCell = findCell;
+ 
+-        if (needsAlphaFormat) {
+-            // Special case for "transparent", all other non-alpha formats
+-            // will return rgba when there is transparency.
+-            if (format === "name" && this._a === 0) {
+-                return this.toName();
+-            }
+-            return this.toRgbString();
+-        }
+-        if (format === "rgb") {
+-            formattedString = this.toRgbString();
+-        }
+-        if (format === "prgb") {
+-            formattedString = this.toPercentageRgbString();
+-        }
+-        if (format === "hex" || format === "hex6") {
+-            formattedString = this.toHexString();
+-        }
+-        if (format === "hex3") {
+-            formattedString = this.toHexString(true);
+-        }
+-        if (format === "hex8") {
+-            formattedString = this.toHex8String();
+-        }
+-        if (format === "name") {
+-            formattedString = this.toName();
++//Builds an index for an n-cell.  This is more general than dual, but less efficient
++function incidence(from_cells, to_cells) {
++  var index = new Array(from_cells.length)
++  for(var i=0, il=index.length; i<il; ++i) {
++    index[i] = []
++  }
++  var b = []
++  for(var i=0, n=to_cells.length; i<n; ++i) {
++    var c = to_cells[i]
++    var cl = c.length
++    for(var k=1, kn=(1<<cl); k<kn; ++k) {
++      b.length = bits.popCount(k)
++      var l = 0
++      for(var j=0; j<cl; ++j) {
++        if(k & (1<<j)) {
++          b[l++] = c[j]
+         }
+-        if (format === "hsl") {
+-            formattedString = this.toHslString();
++      }
++      var idx=findCell(from_cells, b)
++      if(idx < 0) {
++        continue
++      }
++      while(true) {
++        index[idx++].push(i)
++        if(idx >= from_cells.length || compareCells(from_cells[idx], b) !== 0) {
++          break
+         }
+-        if (format === "hsv") {
+-            formattedString = this.toHsvString();
++      }
++    }
++  }
++  return index
++}
++exports.incidence = incidence
++
++//Computes the dual of the mesh.  This is basically an optimized version of buildIndex for the situation where from_cells is just the list of vertices
++function dual(cells, vertex_count) {
++  if(!vertex_count) {
++    return incidence(unique(skeleton(cells, 0)), cells, 0)
++  }
++  var res = new Array(vertex_count)
++  for(var i=0; i<vertex_count; ++i) {
++    res[i] = []
++  }
++  for(var i=0, len=cells.length; i<len; ++i) {
++    var c = cells[i]
++    for(var j=0, cl=c.length; j<cl; ++j) {
++      res[c[j]].push(i)
++    }
++  }
++  return res
++}
++exports.dual = dual
++
++//Enumerates all cells in the complex
++function explode(cells) {
++  var result = []
++  for(var i=0, il=cells.length; i<il; ++i) {
++    var c = cells[i]
++      , cl = c.length|0
++    for(var j=1, jl=(1<<cl); j<jl; ++j) {
++      var b = []
++      for(var k=0; k<cl; ++k) {
++        if((j >>> k) & 1) {
++          b.push(c[k])
+         }
++      }
++      result.push(b)
++    }
++  }
++  return normalize(result)
++}
++exports.explode = explode
+ 
+-        return formattedString || this.toHexString();
+-    },
+-    clone: function() {
+-        return tinycolor(this.toString());
+-    },
++//Enumerates all of the n-cells of a cell complex
++function skeleton(cells, n) {
++  if(n < 0) {
++    return []
++  }
++  var result = []
++    , k0     = (1<<(n+1))-1
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var k=k0; k<(1<<c.length); k=bits.nextCombination(k)) {
++      var b = new Array(n+1)
++        , l = 0
++      for(var j=0; j<c.length; ++j) {
++        if(k & (1<<j)) {
++          b[l++] = c[j]
++        }
++      }
++      result.push(b)
++    }
++  }
++  return normalize(result)
++}
++exports.skeleton = skeleton;
+ 
+-    _applyModification: function(fn, args) {
+-        var color = fn.apply(null, [this].concat([].slice.call(args)));
+-        this._r = color._r;
+-        this._g = color._g;
+-        this._b = color._b;
+-        this.setAlpha(color._a);
+-        return this;
+-    },
+-    lighten: function() {
+-        return this._applyModification(lighten, arguments);
+-    },
+-    brighten: function() {
+-        return this._applyModification(brighten, arguments);
+-    },
+-    darken: function() {
+-        return this._applyModification(darken, arguments);
+-    },
+-    desaturate: function() {
+-        return this._applyModification(desaturate, arguments);
+-    },
+-    saturate: function() {
+-        return this._applyModification(saturate, arguments);
+-    },
+-    greyscale: function() {
+-        return this._applyModification(greyscale, arguments);
+-    },
+-    spin: function() {
+-        return this._applyModification(spin, arguments);
+-    },
++//Computes the boundary of all cells, does not remove duplicates
++function boundary(cells) {
++  var res = []
++  for(var i=0,il=cells.length; i<il; ++i) {
++    var c = cells[i]
++    for(var j=0,cl=c.length; j<cl; ++j) {
++      var b = new Array(c.length-1)
++      for(var k=0, l=0; k<cl; ++k) {
++        if(k !== j) {
++          b[l++] = c[k]
++        }
++      }
++      res.push(b)
++    }
++  }
++  return normalize(res)
++}
++exports.boundary = boundary;
+ 
+-    _applyCombination: function(fn, args) {
+-        return fn.apply(null, [this].concat([].slice.call(args)));
+-    },
+-    analogous: function() {
+-        return this._applyCombination(analogous, arguments);
+-    },
+-    complement: function() {
+-        return this._applyCombination(complement, arguments);
+-    },
+-    monochromatic: function() {
+-        return this._applyCombination(monochromatic, arguments);
+-    },
+-    splitcomplement: function() {
+-        return this._applyCombination(splitcomplement, arguments);
+-    },
+-    triad: function() {
+-        return this._applyCombination(triad, arguments);
+-    },
+-    tetrad: function() {
+-        return this._applyCombination(tetrad, arguments);
++//Computes connected components for a dense cell complex
++function connectedComponents_dense(cells, vertex_count) {
++  var labels = new UnionFind(vertex_count)
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      for(var k=j+1; k<c.length; ++k) {
++        labels.link(c[j], c[k])
++      }
+     }
+-};
++  }
++  var components = []
++    , component_labels = labels.ranks
++  for(var i=0; i<component_labels.length; ++i) {
++    component_labels[i] = -1
++  }
++  for(var i=0; i<cells.length; ++i) {
++    var l = labels.find(cells[i][0])
++    if(component_labels[l] < 0) {
++      component_labels[l] = components.length
++      components.push([cells[i].slice(0)])
++    } else {
++      components[component_labels[l]].push(cells[i].slice(0))
++    }
++  }
++  return components
++}
+ 
+-// If input is an object, force 1 into "1.0" to handle ratios properly
+-// String input requires "1.0" as input, so 1 will be treated as 1
+-tinycolor.fromRatio = function(color, opts) {
+-    if (typeof color == "object") {
+-        var newColor = {};
+-        for (var i in color) {
+-            if (color.hasOwnProperty(i)) {
+-                if (i === "a") {
+-                    newColor[i] = color[i];
+-                }
+-                else {
+-                    newColor[i] = convertToPercentage(color[i]);
+-                }
+-            }
+-        }
+-        color = newColor;
++//Computes connected components for a sparse graph
++function connectedComponents_sparse(cells) {
++  var vertices  = unique(normalize(skeleton(cells, 0)))
++    , labels    = new UnionFind(vertices.length)
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      var vj = findCell(vertices, [c[j]])
++      for(var k=j+1; k<c.length; ++k) {
++        labels.link(vj, findCell(vertices, [c[k]]))
++      }
++    }
++  }
++  var components        = []
++    , component_labels  = labels.ranks
++  for(var i=0; i<component_labels.length; ++i) {
++    component_labels[i] = -1
++  }
++  for(var i=0; i<cells.length; ++i) {
++    var l = labels.find(findCell(vertices, [cells[i][0]]));
++    if(component_labels[l] < 0) {
++      component_labels[l] = components.length
++      components.push([cells[i].slice(0)])
++    } else {
++      components[component_labels[l]].push(cells[i].slice(0))
+     }
++  }
++  return components
++}
+ 
+-    return tinycolor(color, opts);
+-};
++//Computes connected components for a cell complex
++function connectedComponents(cells, vertex_count) {
++  if(vertex_count) {
++    return connectedComponents_dense(cells, vertex_count)
++  }
++  return connectedComponents_sparse(cells)
++}
++exports.connectedComponents = connectedComponents
+ 
+-// Given a string or object, convert that input to RGB
+-// Possible string inputs:
+-//
+-//     "red"
+-//     "#f00" or "f00"
+-//     "#ff0000" or "ff0000"
+-//     "#ff000000" or "ff000000"
+-//     "rgb 255 0 0" or "rgb (255, 0, 0)"
+-//     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
+-//     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
+-//     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
+-//     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
+-//     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
+-//     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
+-//
+-function inputToRGB(color) {
++},{"bit-twiddle":35,"union-find":247}],230:[function(require,module,exports){
++arguments[4][35][0].apply(exports,arguments)
++},{"dup":35}],231:[function(require,module,exports){
++arguments[4][229][0].apply(exports,arguments)
++},{"bit-twiddle":230,"dup":229,"union-find":232}],232:[function(require,module,exports){
++"use strict"; "use restrict";
+ 
+-    var rgb = { r: 0, g: 0, b: 0 };
+-    var a = 1;
+-    var ok = false;
+-    var format = false;
++module.exports = UnionFind;
+ 
+-    if (typeof color == "string") {
+-        color = stringInputToObject(color);
+-    }
++function UnionFind(count) {
++  this.roots = new Array(count);
++  this.ranks = new Array(count);
++  
++  for(var i=0; i<count; ++i) {
++    this.roots[i] = i;
++    this.ranks[i] = 0;
++  }
++}
+ 
+-    if (typeof color == "object") {
+-        if (color.hasOwnProperty("r") && color.hasOwnProperty("g") && color.hasOwnProperty("b")) {
+-            rgb = rgbToRgb(color.r, color.g, color.b);
+-            ok = true;
+-            format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
+-        }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("v")) {
+-            color.s = convertToPercentage(color.s);
+-            color.v = convertToPercentage(color.v);
+-            rgb = hsvToRgb(color.h, color.s, color.v);
+-            ok = true;
+-            format = "hsv";
+-        }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("l")) {
+-            color.s = convertToPercentage(color.s);
+-            color.l = convertToPercentage(color.l);
+-            rgb = hslToRgb(color.h, color.s, color.l);
+-            ok = true;
+-            format = "hsl";
+-        }
++UnionFind.prototype.length = function() {
++  return this.roots.length;
++}
+ 
+-        if (color.hasOwnProperty("a")) {
+-            a = color.a;
+-        }
+-    }
++UnionFind.prototype.makeSet = function() {
++  var n = this.roots.length;
++  this.roots.push(n);
++  this.ranks.push(0);
++  return n;
++}
+ 
+-    a = boundAlpha(a);
++UnionFind.prototype.find = function(x) {
++  var roots = this.roots;
++  while(roots[x] !== x) {
++    var y = roots[x];
++    roots[x] = roots[y];
++    x = y;
++  }
++  return x;
++}
+ 
+-    return {
+-        ok: ok,
+-        format: color.format || format,
+-        r: mathMin(255, mathMax(rgb.r, 0)),
+-        g: mathMin(255, mathMax(rgb.g, 0)),
+-        b: mathMin(255, mathMax(rgb.b, 0)),
+-        a: a
+-    };
++UnionFind.prototype.link = function(x, y) {
++  var xr = this.find(x)
++    , yr = this.find(y);
++  if(xr === yr) {
++    return;
++  }
++  var ranks = this.ranks
++    , roots = this.roots
++    , xd    = ranks[xr]
++    , yd    = ranks[yr];
++  if(xd < yd) {
++    roots[xr] = yr;
++  } else if(yd < xd) {
++    roots[yr] = xr;
++  } else {
++    roots[yr] = xr;
++    ++ranks[xr];
++  }
+ }
+ 
+ 
+-// Conversion Functions
+-// --------------------
++},{}],233:[function(require,module,exports){
++"use strict"
+ 
+-// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
+-// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>
++module.exports = simplifyPolygon
+ 
+-// `rgbToRgb`
+-// Handle bounds / percentage checking to conform to CSS color spec
+-// <http://www.w3.org/TR/css3-color/>
+-// *Assumes:* r, g, b in [0, 255] or [0, 1]
+-// *Returns:* { r, g, b } in [0, 255]
+-function rgbToRgb(r, g, b){
+-    return {
+-        r: bound01(r, 255) * 255,
+-        g: bound01(g, 255) * 255,
+-        b: bound01(b, 255) * 255
+-    };
++var orient = require("robust-orientation")
++var sc = require("simplicial-complex")
++
++function errorWeight(base, a, b) {
++  var area = Math.abs(orient(base, a, b))
++  var perim = Math.sqrt(Math.pow(a[0] - b[0], 2) + Math.pow(a[1]-b[1], 2))
++  return area / perim
+ }
+ 
+-// `rgbToHsl`
+-// Converts an RGB color value to HSL.
+-// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
+-// *Returns:* { h, s, l } in [0,1]
+-function rgbToHsl(r, g, b) {
++function simplifyPolygon(cells, positions, minArea) {
+ 
+-    r = bound01(r, 255);
+-    g = bound01(g, 255);
+-    b = bound01(b, 255);
++  var n = positions.length
++  var nc = cells.length
++  var inv = new Array(n)
++  var outv = new Array(n)
++  var weights = new Array(n)
++  var dead = new Array(n)
++  
++  //Initialize tables
++  for(var i=0; i<n; ++i) {
++    inv[i] = outv[i] = -1
++    weights[i] = Infinity
++    dead[i] = false
++  }
+ 
+-    var max = mathMax(r, g, b), min = mathMin(r, g, b);
+-    var h, s, l = (max + min) / 2;
++  //Compute neighbors
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    if(c.length !== 2) {
++      throw new Error("Input must be a graph")
++    }
++    var s = c[1]
++    var t = c[0]
++    if(outv[t] !== -1) {
++      outv[t] = -2
++    } else {
++      outv[t] = s
++    }
++    if(inv[s] !== -1) {
++      inv[s] = -2
++    } else {
++      inv[s] = t
++    }
++  }
+ 
+-    if(max == min) {
+-        h = s = 0; // achromatic
++  //Updates the weight for vertex i
++  function computeWeight(i) {
++    if(dead[i]) {
++      return Infinity
+     }
+-    else {
+-        var d = max - min;
+-        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
+-        switch(max) {
+-            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+-            case g: h = (b - r) / d + 2; break;
+-            case b: h = (r - g) / d + 4; break;
++    //TODO: Check that the line segment doesn't cross once simplified
++    var s = inv[i]
++    var t = outv[i]
++    if((s<0) || (t<0)) {
++      return Infinity
++    } else {
++      return errorWeight(positions[i], positions[s], positions[t])
++    }
++  }
++
++  //Swaps two nodes on the heap (i,j) are the index of the nodes
++  function heapSwap(i,j) {
++    var a = heap[i]
++    var b = heap[j]
++    heap[i] = b
++    heap[j] = a
++    index[a] = j
++    index[b] = i
++  }
++
++  //Returns the weight of node i on the heap
++  function heapWeight(i) {
++    return weights[heap[i]]
++  }
++
++  function heapParent(i) {
++    if(i & 1) {
++      return (i - 1) >> 1
++    }
++    return (i >> 1) - 1
++  }
++
++  //Bubble element i down the heap
++  function heapDown(i) {
++    var w = heapWeight(i)
++    while(true) {
++      var tw = w
++      var left  = 2*i + 1
++      var right = 2*(i + 1)
++      var next = i
++      if(left < heapCount) {
++        var lw = heapWeight(left)
++        if(lw < tw) {
++          next = left
++          tw = lw
++        }
++      }
++      if(right < heapCount) {
++        var rw = heapWeight(right)
++        if(rw < tw) {
++          next = right
+         }
++      }
++      if(next === i) {
++        return i
++      }
++      heapSwap(i, next)
++      i = next      
++    }
++  }
+ 
+-        h /= 6;
++  //Bubbles element i up the heap
++  function heapUp(i) {
++    var w = heapWeight(i)
++    while(i > 0) {
++      var parent = heapParent(i)
++      if(parent >= 0) {
++        var pw = heapWeight(parent)
++        if(w < pw) {
++          heapSwap(i, parent)
++          i = parent
++          continue
++        }
++      }
++      return i
+     }
++  }
+ 
+-    return { h: h, s: s, l: l };
+-}
++  //Pop minimum element
++  function heapPop() {
++    if(heapCount > 0) {
++      var head = heap[0]
++      heapSwap(0, heapCount-1)
++      heapCount -= 1
++      heapDown(0)
++      return head
++    }
++    return -1
++  }
+ 
+-// `hslToRgb`
+-// Converts an HSL color value to RGB.
+-// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
+-// *Returns:* { r, g, b } in the set [0, 255]
+-function hslToRgb(h, s, l) {
+-    var r, g, b;
++  //Update heap item i
++  function heapUpdate(i, w) {
++    var a = heap[i]
++    if(weights[a] === w) {
++      return i
++    }
++    weights[a] = -Infinity
++    heapUp(i)
++    heapPop()
++    weights[a] = w
++    heapCount += 1
++    return heapUp(heapCount-1)
++  }
+ 
+-    h = bound01(h, 360);
+-    s = bound01(s, 100);
+-    l = bound01(l, 100);
++  //Kills a vertex (assume vertex already removed from heap)
++  function kill(i) {
++    if(dead[i]) {
++      return
++    }
++    //Kill vertex
++    dead[i] = true
++    //Fixup topology
++    var s = inv[i]
++    var t = outv[i]
++    if(inv[t] >= 0) {
++      inv[t] = s
++    }
++    if(outv[s] >= 0) {
++      outv[s] = t
++    }
+ 
+-    function hue2rgb(p, q, t) {
+-        if(t < 0) t += 1;
+-        if(t > 1) t -= 1;
+-        if(t < 1/6) return p + (q - p) * 6 * t;
+-        if(t < 1/2) return q;
+-        if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
+-        return p;
++    //Update weights on s and t
++    if(index[s] >= 0) {
++      heapUpdate(index[s], computeWeight(s))
++    }
++    if(index[t] >= 0) {
++      heapUpdate(index[t], computeWeight(t))
+     }
++  }
+ 
+-    if(s === 0) {
+-        r = g = b = l; // achromatic
++  //Initialize weights and heap
++  var heap = []
++  var index = new Array(n)
++  for(var i=0; i<n; ++i) {
++    var w = weights[i] = computeWeight(i)
++    if(w < Infinity) {
++      index[i] = heap.length
++      heap.push(i)
++    } else {
++      index[i] = -1
+     }
+-    else {
+-        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
+-        var p = 2 * l - q;
+-        r = hue2rgb(p, q, h + 1/3);
+-        g = hue2rgb(p, q, h);
+-        b = hue2rgb(p, q, h - 1/3);
++  }
++  var heapCount = heap.length
++  for(var i=heapCount>>1; i>=0; --i) {
++    heapDown(i)
++  }
++  
++  //Kill vertices
++  while(true) {
++    var hmin = heapPop()
++    if((hmin < 0) || (weights[hmin] > minArea)) {
++      break
+     }
++    kill(hmin)
++  }
+ 
+-    return { r: r * 255, g: g * 255, b: b * 255 };
+-}
+-
+-// `rgbToHsv`
+-// Converts an RGB color value to HSV
+-// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
+-// *Returns:* { h, s, v } in [0,1]
+-function rgbToHsv(r, g, b) {
+-
+-    r = bound01(r, 255);
+-    g = bound01(g, 255);
+-    b = bound01(b, 255);
+-
+-    var max = mathMax(r, g, b), min = mathMin(r, g, b);
+-    var h, s, v = max;
+-
+-    var d = max - min;
+-    s = max === 0 ? 0 : d / max;
+-
+-    if(max == min) {
+-        h = 0; // achromatic
++  //Build collapsed vertex table
++  var npositions = []
++  for(var i=0; i<n; ++i) {
++    if(!dead[i]) {
++      index[i] = npositions.length
++      npositions.push(positions[i].slice())
+     }
+-    else {
+-        switch(max) {
+-            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+-            case g: h = (b - r) / d + 2; break;
+-            case b: h = (r - g) / d + 4; break;
+-        }
+-        h /= 6;
++  }
++  var nv = npositions.length
++
++  function tortoiseHare(seq, start) {
++    if(seq[start] < 0) {
++      return start
+     }
+-    return { h: h, s: s, v: v };
+-}
++    var t = start
++    var h = start
++    do {
++      //Walk two steps with h
++      var nh = seq[h]
++      if(!dead[h] || nh < 0 || nh === h) {
++        break
++      }
++      h = nh
++      nh = seq[h]
++      if(!dead[h] || nh < 0 || nh === h) {
++        break
++      }
++      h = nh
+ 
+-// `hsvToRgb`
+-// Converts an HSV color value to RGB.
+-// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
+-// *Returns:* { r, g, b } in the set [0, 255]
+- function hsvToRgb(h, s, v) {
++      //Walk one step with t
++      t = seq[t]
++    } while(t !== h)
++    //Compress cycles
++    for(var v=start; v!==h; v = seq[v]) {
++      seq[v] = h
++    }
++    return h
++  }
+ 
+-    h = bound01(h, 360) * 6;
+-    s = bound01(s, 100);
+-    v = bound01(v, 100);
++  var ncells = []
++  cells.forEach(function(c) {
++    var tin = tortoiseHare(inv, c[0])
++    var tout = tortoiseHare(outv, c[1])
++    if(tin >= 0 && tout >= 0 && tin !== tout) {
++      var cin = index[tin]
++      var cout = index[tout]
++      if(cin !== cout) {
++        ncells.push([ cin, cout ])
++      }
++    }
++  })
+ 
+-    var i = math.floor(h),
+-        f = h - i,
+-        p = v * (1 - s),
+-        q = v * (1 - f * s),
+-        t = v * (1 - (1 - f) * s),
+-        mod = i % 6,
+-        r = [v, q, p, p, t, v][mod],
+-        g = [t, v, v, q, p, p][mod],
+-        b = [p, p, t, v, v, q][mod];
++  //Normalize result
++  sc.unique(sc.normalize(ncells))
+ 
+-    return { r: r * 255, g: g * 255, b: b * 255 };
++  //Return final list of cells
++  return {
++    positions: npositions,
++    edges: ncells
++  }
+ }
++},{"robust-orientation":219,"simplicial-complex":231}],234:[function(require,module,exports){
++"use strict"
+ 
+-// `rgbToHex`
+-// Converts an RGB color to hex
+-// Assumes r, g, and b are contained in the set [0, 255]
+-// Returns a 3 or 6 character hex
+-function rgbToHex(r, g, b, allow3Char) {
++module.exports = orderSegments
+ 
+-    var hex = [
+-        pad2(mathRound(r).toString(16)),
+-        pad2(mathRound(g).toString(16)),
+-        pad2(mathRound(b).toString(16))
+-    ];
++var orient = require("robust-orientation")
+ 
+-    // Return a 3 character hex if possible
+-    if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
+-        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
++function horizontalOrder(a, b) {
++  var bl, br
++  if(b[0][0] < b[1][0]) {
++    bl = b[0]
++    br = b[1]
++  } else if(b[0][0] > b[1][0]) {
++    bl = b[1]
++    br = b[0]
++  } else {
++    var alo = Math.min(a[0][1], a[1][1])
++    var ahi = Math.max(a[0][1], a[1][1])
++    var blo = Math.min(b[0][1], b[1][1])
++    var bhi = Math.max(b[0][1], b[1][1])
++    if(ahi < blo) {
++      return ahi - blo
+     }
+-
+-    return hex.join("");
++    if(alo > bhi) {
++      return alo - bhi
++    }
++    return ahi - bhi
++  }
++  var al, ar
++  if(a[0][1] < a[1][1]) {
++    al = a[0]
++    ar = a[1]
++  } else {
++    al = a[1]
++    ar = a[0]
++  }
++  var d = orient(br, bl, al)
++  if(d) {
++    return d
++  }
++  d = orient(br, bl, ar)
++  if(d) {
++    return d
++  }
++  return ar - br
+ }
+ 
+-// `rgbaToHex`
+-// Converts an RGBA color plus alpha transparency to hex
+-// Assumes r, g, b and a are contained in the set [0, 255]
+-// Returns an 8 character hex
+-function rgbaToHex(r, g, b, a) {
+-
+-    var hex = [
+-        pad2(convertDecimalToHex(a)),
+-        pad2(mathRound(r).toString(16)),
+-        pad2(mathRound(g).toString(16)),
+-        pad2(mathRound(b).toString(16))
+-    ];
+-
+-    return hex.join("");
++function orderSegments(b, a) {
++  var al, ar
++  if(a[0][0] < a[1][0]) {
++    al = a[0]
++    ar = a[1]
++  } else if(a[0][0] > a[1][0]) {
++    al = a[1]
++    ar = a[0]
++  } else {
++    return horizontalOrder(a, b)
++  }
++  var bl, br
++  if(b[0][0] < b[1][0]) {
++    bl = b[0]
++    br = b[1]
++  } else if(b[0][0] > b[1][0]) {
++    bl = b[1]
++    br = b[0]
++  } else {
++    return -horizontalOrder(b, a)
++  }
++  var d1 = orient(al, ar, br)
++  var d2 = orient(al, ar, bl)
++  if(d1 < 0) {
++    if(d2 <= 0) {
++      return d1
++    }
++  } else if(d1 > 0) {
++    if(d2 >= 0) {
++      return d1
++    }
++  } else if(d2) {
++    return d2
++  }
++  d1 = orient(br, bl, ar)
++  d2 = orient(br, bl, al)
++  if(d1 < 0) {
++    if(d2 <= 0) {
++      return d1
++    }
++  } else if(d1 > 0) {
++    if(d2 >= 0) {
++      return d1
++    }
++  } else if(d2) {
++    return d2
++  }
++  return ar[0] - br[0]
+ }
++},{"robust-orientation":219}],235:[function(require,module,exports){
++"use strict"
+ 
+-// `equals`
+-// Can be called with any tinycolor input
+-tinycolor.equals = function (color1, color2) {
+-    if (!color1 || !color2) { return false; }
+-    return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
+-};
++module.exports = createSlabDecomposition
+ 
+-tinycolor.random = function() {
+-    return tinycolor.fromRatio({
+-        r: mathRandom(),
+-        g: mathRandom(),
+-        b: mathRandom()
+-    });
+-};
++var bounds = require("binary-search-bounds")
++var createRBTree = require("functional-red-black-tree")
++var orient = require("robust-orientation")
++var orderSegments = require("./lib/order-segments")
+ 
++function SlabDecomposition(slabs, coordinates, horizontal) {
++  this.slabs = slabs
++  this.coordinates = coordinates
++  this.horizontal = horizontal
++}
+ 
+-// Modification Functions
+-// ----------------------
+-// Thanks to less.js for some of the basics here
+-// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>
++var proto = SlabDecomposition.prototype
+ 
+-function desaturate(color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.s -= amount / 100;
+-    hsl.s = clamp01(hsl.s);
+-    return tinycolor(hsl);
++function compareHorizontal(e, y) {
++  return e.y - y
+ }
+ 
+-function saturate(color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.s += amount / 100;
+-    hsl.s = clamp01(hsl.s);
+-    return tinycolor(hsl);
++function searchBucket(root, p) {
++  var lastNode = null
++  while(root) {
++    var seg = root.key
++    var l, r
++    if(seg[0][0] < seg[1][0]) {
++      l = seg[0]
++      r = seg[1]
++    } else {
++      l = seg[1]
++      r = seg[0]
++    }
++    var o = orient(l, r, p)
++    if(o < 0) {
++      root = root.left
++    } else if(o > 0) {
++      if(p[0] !== seg[1][0]) {
++        lastNode = root
++        root = root.right
++      } else {
++        var val = searchBucket(root.right, p)
++        if(val) {
++          return val
++        }
++        root = root.left
++      }
++    } else {
++      if(p[0] !== seg[1][0]) {
++        return root
++      } else {
++        var val = searchBucket(root.right, p)
++        if(val) {
++          return val
++        }
++        root = root.left
++      }
++    }
++  }
++  return lastNode
+ }
+ 
+-function greyscale(color) {
+-    return tinycolor(color).desaturate(100);
++proto.castUp = function(p) {
++  var bucket = bounds.le(this.coordinates, p[0])
++  if(bucket < 0) {
++    return -1
++  }
++  var root = this.slabs[bucket]
++  var hitNode = searchBucket(this.slabs[bucket], p)
++  var lastHit = -1
++  if(hitNode) {
++    lastHit = hitNode.value
++  }
++  //Edge case: need to handle horizontal segments (sucks)
++  if(this.coordinates[bucket] === p[0]) {
++    var lastSegment = null
++    if(hitNode) {
++      lastSegment = hitNode.key
++    }
++    if(bucket > 0) {
++      var otherHitNode = searchBucket(this.slabs[bucket-1], p)
++      if(otherHitNode) {
++        if(lastSegment) {
++          if(orderSegments(otherHitNode.key, lastSegment) > 0) {
++            lastSegment = otherHitNode.key
++            lastHit = otherHitNode.value
++          }
++        } else {
++          lastHit = otherHitNode.value
++          lastSegment = otherHitNode.key
++        }
++      }
++    }
++    var horiz = this.horizontal[bucket]
++    if(horiz.length > 0) {
++      var hbucket = bounds.ge(horiz, p[1], compareHorizontal)
++      if(hbucket < horiz.length) {
++        var e = horiz[hbucket]
++        if(p[1] === e.y) {
++          if(e.closed) {
++            return e.index
++          } else {
++            while(hbucket < horiz.length-1 && horiz[hbucket+1].y === p[1]) {
++              hbucket = hbucket+1
++              e = horiz[hbucket]
++              if(e.closed) {
++                return e.index
++              }
++            }
++            if(e.y === p[1] && !e.start) {
++              hbucket = hbucket+1
++              if(hbucket >= horiz.length) {
++                return lastHit
++              }
++              e = horiz[hbucket]
++            }
++          }
++        }
++        //Check if e is above/below last segment
++        if(e.start) {
++          if(lastSegment) {
++            var o = orient(lastSegment[0], lastSegment[1], [p[0], e.y])
++            if(lastSegment[0][0] > lastSegment[1][0]) {
++              o = -o
++            }
++            if(o > 0) {
++              lastHit = e.index
++            }
++          } else {
++            lastHit = e.index
++          }
++        } else if(e.y !== p[1]) {
++          lastHit = e.index
++        }
++      }
++    }
++  }
++  return lastHit
+ }
+ 
+-function lighten (color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.l += amount / 100;
+-    hsl.l = clamp01(hsl.l);
+-    return tinycolor(hsl);
++function IntervalSegment(y, index, start, closed) {
++  this.y = y
++  this.index = index
++  this.start = start
++  this.closed = closed
+ }
+ 
+-function brighten(color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var rgb = tinycolor(color).toRgb();
+-    rgb.r = mathMax(0, mathMin(255, rgb.r - mathRound(255 * - (amount / 100))));
+-    rgb.g = mathMax(0, mathMin(255, rgb.g - mathRound(255 * - (amount / 100))));
+-    rgb.b = mathMax(0, mathMin(255, rgb.b - mathRound(255 * - (amount / 100))));
+-    return tinycolor(rgb);
++function Event(x, segment, create, index) {
++  this.x = x
++  this.segment = segment
++  this.create = create
++  this.index = index
+ }
+ 
+-function darken (color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.l -= amount / 100;
+-    hsl.l = clamp01(hsl.l);
+-    return tinycolor(hsl);
+-}
+ 
+-// Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
+-// Values outside of this range will be wrapped into this range.
+-function spin(color, amount) {
+-    var hsl = tinycolor(color).toHsl();
+-    var hue = (mathRound(hsl.h) + amount) % 360;
+-    hsl.h = hue < 0 ? 360 + hue : hue;
+-    return tinycolor(hsl);
++function createSlabDecomposition(segments) {
++  var numSegments = segments.length
++  var numEvents = 2 * numSegments
++  var events = new Array(numEvents)
++  for(var i=0; i<numSegments; ++i) {
++    var s = segments[i]
++    var f = s[0][0] < s[1][0]
++    events[2*i] = new Event(s[0][0], s, f, i)
++    events[2*i+1] = new Event(s[1][0], s, !f, i)
++  }
++  events.sort(function(a,b) {
++    var d = a.x - b.x
++    if(d) {
++      return d
++    }
++    d = a.create - b.create
++    if(d) {
++      return d
++    }
++    return Math.min(a.segment[0][1], a.segment[1][1]) - Math.min(b.segment[0][1], b.segment[1][1])
++  })
++  var tree = createRBTree(orderSegments)
++  var slabs = []
++  var lines = []
++  var horizontal = []
++  var lastX = -Infinity
++  for(var i=0; i<numEvents; ) {
++    var x = events[i].x
++    var horiz = []
++    while(i < numEvents) {
++      var e = events[i]
++      if(e.x !== x) {
++        break
++      }
++      i += 1
++      if(e.segment[0][0] === e.x && e.segment[1][0] === e.x) {
++        if(e.create) {
++          if(e.segment[0][1] < e.segment[1][1]) {
++            horiz.push(new IntervalSegment(
++                e.segment[0][1],
++                e.index,
++                true,
++                true))
++            horiz.push(new IntervalSegment(
++                e.segment[1][1],
++                e.index,
++                false,
++                false))
++          } else {
++            horiz.push(new IntervalSegment(
++                e.segment[1][1],
++                e.index,
++                true,
++                false))
++            horiz.push(new IntervalSegment(
++                e.segment[0][1],
++                e.index,
++                false,
++                true))
++          }
++        }
++      } else {
++        if(e.create) {
++          tree = tree.insert(e.segment, e.index)
++        } else {
++          tree = tree.remove(e.segment)
++        }
++      }
++    }
++    slabs.push(tree.root)
++    lines.push(x)
++    horizontal.push(horiz)
++  }
++  return new SlabDecomposition(slabs, lines, horizontal)
+ }
++},{"./lib/order-segments":234,"binary-search-bounds":34,"functional-red-black-tree":84,"robust-orientation":219}],236:[function(require,module,exports){
++"use strict"
+ 
+-// Combination Functions
+-// ---------------------
+-// Thanks to jQuery xColor for some of the ideas behind these
+-// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>
++var robustDot = require("robust-dot-product")
++var robustSum = require("robust-sum")
+ 
+-function complement(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.h = (hsl.h + 180) % 360;
+-    return tinycolor(hsl);
+-}
++module.exports = splitPolygon
++module.exports.positive = positive
++module.exports.negative = negative
+ 
+-function triad(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    var h = hsl.h;
+-    return [
+-        tinycolor(color),
+-        tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
+-        tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
+-    ];
++function planeT(p, plane) {
++  var r = robustSum(robustDot(p, plane), [plane[plane.length-1]])
++  return r[r.length-1]
+ }
+ 
+-function tetrad(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    var h = hsl.h;
+-    return [
+-        tinycolor(color),
+-        tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
+-        tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
+-        tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
+-    ];
+-}
+ 
+-function splitcomplement(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    var h = hsl.h;
+-    return [
+-        tinycolor(color),
+-        tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l}),
+-        tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l})
+-    ];
++//Can't do this exactly and emit a floating point result
++function lerpW(a, wa, b, wb) {
++  var d = wb - wa
++  var t = -wa / d
++  if(t < 0.0) {
++    t = 0.0
++  } else if(t > 1.0) {
++    t = 1.0
++  }
++  var ti = 1.0 - t
++  var n = a.length
++  var r = new Array(n)
++  for(var i=0; i<n; ++i) {
++    r[i] = t * a[i] + ti * b[i]
++  }
++  return r
+ }
+ 
+-function analogous(color, results, slices) {
+-    results = results || 6;
+-    slices = slices || 30;
+-
+-    var hsl = tinycolor(color).toHsl();
+-    var part = 360 / slices;
+-    var ret = [tinycolor(color)];
+-
+-    for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results; ) {
+-        hsl.h = (hsl.h + part) % 360;
+-        ret.push(tinycolor(hsl));
++function splitPolygon(points, plane) {
++  var pos = []
++  var neg = []
++  var a = planeT(points[points.length-1], plane)
++  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
++    t = points[i]
++    var b = planeT(t, plane)
++    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
++      var p = lerpW(s, b, t, a)
++      pos.push(p)
++      neg.push(p.slice())
+     }
+-    return ret;
+-}
+-
+-function monochromatic(color, results) {
+-    results = results || 6;
+-    var hsv = tinycolor(color).toHsv();
+-    var h = hsv.h, s = hsv.s, v = hsv.v;
+-    var ret = [];
+-    var modification = 1 / results;
+-
+-    while (results--) {
+-        ret.push(tinycolor({ h: h, s: s, v: v}));
+-        v = (v + modification) % 1;
++    if(b < 0) {
++      neg.push(t.slice())
++    } else if(b > 0) {
++      pos.push(t.slice())
++    } else {
++      pos.push(t.slice())
++      neg.push(t.slice())
+     }
+-
+-    return ret;
++    a = b
++  }
++  return { positive: pos, negative: neg }
+ }
+ 
+-// Utility Functions
+-// ---------------------
+-
+-tinycolor.mix = function(color1, color2, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 50);
+-
+-    var rgb1 = tinycolor(color1).toRgb();
+-    var rgb2 = tinycolor(color2).toRgb();
+-
+-    var p = amount / 100;
+-    var w = p * 2 - 1;
+-    var a = rgb2.a - rgb1.a;
+-
+-    var w1;
+-
+-    if (w * a == -1) {
+-        w1 = w;
+-    } else {
+-        w1 = (w + a) / (1 + w * a);
++function positive(points, plane) {
++  var pos = []
++  var a = planeT(points[points.length-1], plane)
++  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
++    t = points[i]
++    var b = planeT(t, plane)
++    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
++      pos.push(lerpW(s, b, t, a))
+     }
+-
+-    w1 = (w1 + 1) / 2;
+-
+-    var w2 = 1 - w1;
+-
+-    var rgba = {
+-        r: rgb2.r * w1 + rgb1.r * w2,
+-        g: rgb2.g * w1 + rgb1.g * w2,
+-        b: rgb2.b * w1 + rgb1.b * w2,
+-        a: rgb2.a * p  + rgb1.a * (1 - p)
+-    };
+-
+-    return tinycolor(rgba);
+-};
+-
+-
+-// Readability Functions
+-// ---------------------
+-// <http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef (WCAG Version 2)
+-
+-// `contrast`
+-// Analyze the 2 colors and returns the color contrast defined by (WCAG Version 2)
+-tinycolor.readability = function(color1, color2) {
+-    var c1 = tinycolor(color1);
+-    var c2 = tinycolor(color2);
+-    return (Math.max(c1.getLuminance(),c2.getLuminance())+0.05) / (Math.min(c1.getLuminance(),c2.getLuminance())+0.05);
+-};
+-
+-// `isReadable`
+-// Ensure that foreground and background color combinations meet WCAG2 guidelines.
+-// The third argument is an optional Object.
+-//      the 'level' property states 'AA' or 'AAA' - if missing or invalid, it defaults to 'AA';
+-//      the 'size' property states 'large' or 'small' - if missing or invalid, it defaults to 'small'.
+-// If the entire object is absent, isReadable defaults to {level:"AA",size:"small"}.
+-
+-// *Example*
+-//    tinycolor.isReadable("#000", "#111") => false
+-//    tinycolor.isReadable("#000", "#111",{level:"AA",size:"large"}) => false
+-tinycolor.isReadable = function(color1, color2, wcag2) {
+-    var readability = tinycolor.readability(color1, color2);
+-    var wcag2Parms, out;
+-
+-    out = false;
+-
+-    wcag2Parms = validateWCAG2Parms(wcag2);
+-    switch (wcag2Parms.level + wcag2Parms.size) {
+-        case "AAsmall":
+-        case "AAAlarge":
+-            out = readability >= 4.5;
+-            break;
+-        case "AAlarge":
+-            out = readability >= 3;
+-            break;
+-        case "AAAsmall":
+-            out = readability >= 7;
+-            break;
++    if(b >= 0) {
++      pos.push(t.slice())
+     }
+-    return out;
+-
+-};
+-
+-// `mostReadable`
+-// Given a base color and a list of possible foreground or background
+-// colors for that base, returns the most readable color.
+-// Optionally returns Black or White if the most readable color is unreadable.
+-// *Example*
+-//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:false}).toHexString(); // "#112255"
+-//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:true}).toHexString();  // "#ffffff"
+-//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"large"}).toHexString(); // "#faf3f3"
+-//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"small"}).toHexString(); // "#ffffff"
+-tinycolor.mostReadable = function(baseColor, colorList, args) {
+-    var bestColor = null;
+-    var bestScore = 0;
+-    var readability;
+-    var includeFallbackColors, level, size ;
+-    args = args || {};
+-    includeFallbackColors = args.includeFallbackColors ;
+-    level = args.level;
+-    size = args.size;
++    a = b
++  }
++  return pos
++}
+ 
+-    for (var i= 0; i < colorList.length ; i++) {
+-        readability = tinycolor.readability(baseColor, colorList[i]);
+-        if (readability > bestScore) {
+-            bestScore = readability;
+-            bestColor = tinycolor(colorList[i]);
+-        }
++function negative(points, plane) {
++  var neg = []
++  var a = planeT(points[points.length-1], plane)
++  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
++    t = points[i]
++    var b = planeT(t, plane)
++    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
++      neg.push(lerpW(s, b, t, a))
+     }
+-
+-    if (tinycolor.isReadable(baseColor, bestColor, {"level":level,"size":size}) || !includeFallbackColors) {
+-        return bestColor;
++    if(b <= 0) {
++      neg.push(t.slice())
+     }
+-    else {
+-        args.includeFallbackColors=false;
+-        return tinycolor.mostReadable(baseColor,["#fff", "#000"],args);
++    a = b
++  }
++  return neg
++}
++},{"robust-dot-product":216,"robust-sum":224}],237:[function(require,module,exports){
++(function(window) {
++    var re = {
++        not_string: /[^s]/,
++        number: /[diefg]/,
++        json: /[j]/,
++        not_json: /[^j]/,
++        text: /^[^\x25]+/,
++        modulo: /^\x25{2}/,
++        placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijosuxX])/,
++        key: /^([a-z_][a-z_\d]*)/i,
++        key_access: /^\.([a-z_][a-z_\d]*)/i,
++        index_access: /^\[(\d+)\]/,
++        sign: /^[\+\-]/
+     }
+-};
+ 
++    function sprintf() {
++        var key = arguments[0], cache = sprintf.cache
++        if (!(cache[key] && cache.hasOwnProperty(key))) {
++            cache[key] = sprintf.parse(key)
++        }
++        return sprintf.format.call(null, cache[key], arguments)
++    }
+ 
+-// Big List of Colors
+-// ------------------
+-// <http://www.w3.org/TR/css3-color/#svg-color>
+-var names = tinycolor.names = {
+-    aliceblue: "f0f8ff",
+-    antiquewhite: "faebd7",
+-    aqua: "0ff",
+-    aquamarine: "7fffd4",
+-    azure: "f0ffff",
+-    beige: "f5f5dc",
+-    bisque: "ffe4c4",
+-    black: "000",
+-    blanchedalmond: "ffebcd",
+-    blue: "00f",
+-    blueviolet: "8a2be2",
+-    brown: "a52a2a",
+-    burlywood: "deb887",
+-    burntsienna: "ea7e5d",
+-    cadetblue: "5f9ea0",
+-    chartreuse: "7fff00",
+-    chocolate: "d2691e",
+-    coral: "ff7f50",
+-    cornflowerblue: "6495ed",
+-    cornsilk: "fff8dc",
+-    crimson: "dc143c",
+-    cyan: "0ff",
+-    darkblue: "00008b",
+-    darkcyan: "008b8b",
+-    darkgoldenrod: "b8860b",
+-    darkgray: "a9a9a9",
+-    darkgreen: "006400",
+-    darkgrey: "a9a9a9",
+-    darkkhaki: "bdb76b",
+-    darkmagenta: "8b008b",
+-    darkolivegreen: "556b2f",
+-    darkorange: "ff8c00",
+-    darkorchid: "9932cc",
+-    darkred: "8b0000",
+-    darksalmon: "e9967a",
+-    darkseagreen: "8fbc8f",
+-    darkslateblue: "483d8b",
+-    darkslategray: "2f4f4f",
+-    darkslategrey: "2f4f4f",
+-    darkturquoise: "00ced1",
+-    darkviolet: "9400d3",
+-    deeppink: "ff1493",
+-    deepskyblue: "00bfff",
+-    dimgray: "696969",
+-    dimgrey: "696969",
+-    dodgerblue: "1e90ff",
+-    firebrick: "b22222",
+-    floralwhite: "fffaf0",
+-    forestgreen: "228b22",
+-    fuchsia: "f0f",
+-    gainsboro: "dcdcdc",
+-    ghostwhite: "f8f8ff",
+-    gold: "ffd700",
+-    goldenrod: "daa520",
+-    gray: "808080",
+-    green: "008000",
+-    greenyellow: "adff2f",
+-    grey: "808080",
+-    honeydew: "f0fff0",
+-    hotpink: "ff69b4",
+-    indianred: "cd5c5c",
+-    indigo: "4b0082",
+-    ivory: "fffff0",
+-    khaki: "f0e68c",
+-    lavender: "e6e6fa",
+-    lavenderblush: "fff0f5",
+-    lawngreen: "7cfc00",
+-    lemonchiffon: "fffacd",
+-    lightblue: "add8e6",
+-    lightcoral: "f08080",
+-    lightcyan: "e0ffff",
+-    lightgoldenrodyellow: "fafad2",
+-    lightgray: "d3d3d3",
+-    lightgreen: "90ee90",
+-    lightgrey: "d3d3d3",
+-    lightpink: "ffb6c1",
+-    lightsalmon: "ffa07a",
+-    lightseagreen: "20b2aa",
+-    lightskyblue: "87cefa",
+-    lightslategray: "789",
+-    lightslategrey: "789",
+-    lightsteelblue: "b0c4de",
+-    lightyellow: "ffffe0",
+-    lime: "0f0",
+-    limegreen: "32cd32",
+-    linen: "faf0e6",
+-    magenta: "f0f",
+-    maroon: "800000",
+-    mediumaquamarine: "66cdaa",
+-    mediumblue: "0000cd",
+-    mediumorchid: "ba55d3",
+-    mediumpurple: "9370db",
+-    mediumseagreen: "3cb371",
+-    mediumslateblue: "7b68ee",
+-    mediumspringgreen: "00fa9a",
+-    mediumturquoise: "48d1cc",
+-    mediumvioletred: "c71585",
+-    midnightblue: "191970",
+-    mintcream: "f5fffa",
+-    mistyrose: "ffe4e1",
+-    moccasin: "ffe4b5",
+-    navajowhite: "ffdead",
+-    navy: "000080",
+-    oldlace: "fdf5e6",
+-    olive: "808000",
+-    olivedrab: "6b8e23",
+-    orange: "ffa500",
+-    orangered: "ff4500",
+-    orchid: "da70d6",
+-    palegoldenrod: "eee8aa",
+-    palegreen: "98fb98",
+-    paleturquoise: "afeeee",
+-    palevioletred: "db7093",
+-    papayawhip: "ffefd5",
+-    peachpuff: "ffdab9",
+-    peru: "cd853f",
+-    pink: "ffc0cb",
+-    plum: "dda0dd",
+-    powderblue: "b0e0e6",
+-    purple: "800080",
+-    rebeccapurple: "663399",
+-    red: "f00",
+-    rosybrown: "bc8f8f",
+-    royalblue: "4169e1",
+-    saddlebrown: "8b4513",
+-    salmon: "fa8072",
+-    sandybrown: "f4a460",
+-    seagreen: "2e8b57",
+-    seashell: "fff5ee",
+-    sienna: "a0522d",
+-    silver: "c0c0c0",
+-    skyblue: "87ceeb",
+-    slateblue: "6a5acd",
+-    slategray: "708090",
+-    slategrey: "708090",
+-    snow: "fffafa",
+-    springgreen: "00ff7f",
+-    steelblue: "4682b4",
+-    tan: "d2b48c",
+-    teal: "008080",
+-    thistle: "d8bfd8",
+-    tomato: "ff6347",
+-    turquoise: "40e0d0",
+-    violet: "ee82ee",
+-    wheat: "f5deb3",
+-    white: "fff",
+-    whitesmoke: "f5f5f5",
+-    yellow: "ff0",
+-    yellowgreen: "9acd32"
+-};
++    sprintf.format = function(parse_tree, argv) {
++        var cursor = 1, tree_length = parse_tree.length, node_type = "", arg, output = [], i, k, match, pad, pad_character, pad_length, is_positive = true, sign = ""
++        for (i = 0; i < tree_length; i++) {
++            node_type = get_type(parse_tree[i])
++            if (node_type === "string") {
++                output[output.length] = parse_tree[i]
++            }
++            else if (node_type === "array") {
++                match = parse_tree[i] // convenience purposes only
++                if (match[2]) { // keyword argument
++                    arg = argv[cursor]
++                    for (k = 0; k < match[2].length; k++) {
++                        if (!arg.hasOwnProperty(match[2][k])) {
++                            throw new Error(sprintf("[sprintf] property '%s' does not exist", match[2][k]))
++                        }
++                        arg = arg[match[2][k]]
++                    }
++                }
++                else if (match[1]) { // positional argument (explicit)
++                    arg = argv[match[1]]
++                }
++                else { // positional argument (implicit)
++                    arg = argv[cursor++]
++                }
+ 
+-// Make it easy to access colors via `hexNames[hex]`
+-var hexNames = tinycolor.hexNames = flip(names);
++                if (get_type(arg) == "function") {
++                    arg = arg()
++                }
+ 
++                if (re.not_string.test(match[8]) && re.not_json.test(match[8]) && (get_type(arg) != "number" && isNaN(arg))) {
++                    throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg)))
++                }
+ 
+-// Utilities
+-// ---------
++                if (re.number.test(match[8])) {
++                    is_positive = arg >= 0
++                }
+ 
+-// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
+-function flip(o) {
+-    var flipped = { };
+-    for (var i in o) {
+-        if (o.hasOwnProperty(i)) {
+-            flipped[o[i]] = i;
++                switch (match[8]) {
++                    case "b":
++                        arg = arg.toString(2)
++                    break
++                    case "c":
++                        arg = String.fromCharCode(arg)
++                    break
++                    case "d":
++                    case "i":
++                        arg = parseInt(arg, 10)
++                    break
++                    case "j":
++                        arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
++                    break
++                    case "e":
++                        arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential()
++                    break
++                    case "f":
++                        arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
++                    break
++                    case "g":
++                        arg = match[7] ? parseFloat(arg).toPrecision(match[7]) : parseFloat(arg)
++                    break
++                    case "o":
++                        arg = arg.toString(8)
++                    break
++                    case "s":
++                        arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg)
++                    break
++                    case "u":
++                        arg = arg >>> 0
++                    break
++                    case "x":
++                        arg = arg.toString(16)
++                    break
++                    case "X":
++                        arg = arg.toString(16).toUpperCase()
++                    break
++                }
++                if (re.json.test(match[8])) {
++                    output[output.length] = arg
++                }
++                else {
++                    if (re.number.test(match[8]) && (!is_positive || match[3])) {
++                        sign = is_positive ? "+" : "-"
++                        arg = arg.toString().replace(re.sign, "")
++                    }
++                    else {
++                        sign = ""
++                    }
++                    pad_character = match[4] ? match[4] === "0" ? "0" : match[4].charAt(1) : " "
++                    pad_length = match[6] - (sign + arg).length
++                    pad = match[6] ? (pad_length > 0 ? str_repeat(pad_character, pad_length) : "") : ""
++                    output[output.length] = match[5] ? sign + arg + pad : (pad_character === "0" ? sign + pad + arg : pad + sign + arg)
++                }
++            }
+         }
++        return output.join("")
+     }
+-    return flipped;
+-}
+ 
+-// Return a valid alpha value [0,1] with all invalid values being set to 1
+-function boundAlpha(a) {
+-    a = parseFloat(a);
++    sprintf.cache = {}
+ 
+-    if (isNaN(a) || a < 0 || a > 1) {
+-        a = 1;
++    sprintf.parse = function(fmt) {
++        var _fmt = fmt, match = [], parse_tree = [], arg_names = 0
++        while (_fmt) {
++            if ((match = re.text.exec(_fmt)) !== null) {
++                parse_tree[parse_tree.length] = match[0]
++            }
++            else if ((match = re.modulo.exec(_fmt)) !== null) {
++                parse_tree[parse_tree.length] = "%"
++            }
++            else if ((match = re.placeholder.exec(_fmt)) !== null) {
++                if (match[2]) {
++                    arg_names |= 1
++                    var field_list = [], replacement_field = match[2], field_match = []
++                    if ((field_match = re.key.exec(replacement_field)) !== null) {
++                        field_list[field_list.length] = field_match[1]
++                        while ((replacement_field = replacement_field.substring(field_match[0].length)) !== "") {
++                            if ((field_match = re.key_access.exec(replacement_field)) !== null) {
++                                field_list[field_list.length] = field_match[1]
++                            }
++                            else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
++                                field_list[field_list.length] = field_match[1]
++                            }
++                            else {
++                                throw new SyntaxError("[sprintf] failed to parse named argument key")
++                            }
++                        }
++                    }
++                    else {
++                        throw new SyntaxError("[sprintf] failed to parse named argument key")
++                    }
++                    match[2] = field_list
++                }
++                else {
++                    arg_names |= 2
++                }
++                if (arg_names === 3) {
++                    throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
++                }
++                parse_tree[parse_tree.length] = match
++            }
++            else {
++                throw new SyntaxError("[sprintf] unexpected placeholder")
++            }
++            _fmt = _fmt.substring(match[0].length)
++        }
++        return parse_tree
+     }
+ 
+-    return a;
+-}
+-
+-// Take input from [0, n] and return it as [0, 1]
+-function bound01(n, max) {
+-    if (isOnePointZero(n)) { n = "100%"; }
+-
+-    var processPercent = isPercentage(n);
+-    n = mathMin(max, mathMax(0, parseFloat(n)));
+-
+-    // Automatically convert percentage into number
+-    if (processPercent) {
+-        n = parseInt(n * max, 10) / 100;
++    var vsprintf = function(fmt, argv, _argv) {
++        _argv = (argv || []).slice(0)
++        _argv.splice(0, 0, fmt)
++        return sprintf.apply(null, _argv)
+     }
+ 
+-    // Handle floating point rounding errors
+-    if ((math.abs(n - max) < 0.000001)) {
+-        return 1;
++    /**
++     * helpers
++     */
++    function get_type(variable) {
++        return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase()
+     }
+ 
+-    // Convert into [0, 1] range if it isn't already
+-    return (n % max) / parseFloat(max);
+-}
++    function str_repeat(input, multiplier) {
++        return Array(multiplier + 1).join(input)
++    }
+ 
+-// Force a number between 0 and 1
+-function clamp01(val) {
+-    return mathMin(1, mathMax(0, val));
+-}
++    /**
++     * export to either browser or node.js
++     */
++    if (typeof exports !== "undefined") {
++        exports.sprintf = sprintf
++        exports.vsprintf = vsprintf
++    }
++    else {
++        window.sprintf = sprintf
++        window.vsprintf = vsprintf
+ 
+-// Parse a base-16 hex value into a base-10 integer
+-function parseIntFromHex(val) {
+-    return parseInt(val, 16);
+-}
++        if (typeof define === "function" && define.amd) {
++            define(function() {
++                return {
++                    sprintf: sprintf,
++                    vsprintf: vsprintf
++                }
++            })
++        }
++    }
++})(typeof window === "undefined" ? this : window);
+ 
+-// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
+-// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
+-function isOnePointZero(n) {
+-    return typeof n == "string" && n.indexOf('.') != -1 && parseFloat(n) === 1;
+-}
++},{}],238:[function(require,module,exports){
++'use strict'
+ 
+-// Check to see if string passed in is a percentage
+-function isPercentage(n) {
+-    return typeof n === "string" && n.indexOf('%') != -1;
+-}
++module.exports = toSuperScript
+ 
+-// Force a hex value to have 2 characters
+-function pad2(c) {
+-    return c.length == 1 ? '0' + c : '' + c;
++var SUPERSCRIPTS = {
++  ' ': ' ',
++  '0': '⁰',
++  '1': '¹',
++  '2': '²',
++  '3': '³',
++  '4': '⁴',
++  '5': '⁵',
++  '6': '⁶',
++  '7': '⁷',
++  '8': '⁸',
++  '9': '⁹',
++  '+': '⁺',
++  '-': '⁻',
++  'a': 'ᵃ',
++  'b': 'ᵇ',
++  'c': 'ᶜ',
++  'd': 'ᵈ',
++  'e': 'ᵉ',
++  'f': 'ᶠ',
++  'g': 'ᵍ',
++  'h': 'ʰ',
++  'i': 'ⁱ',
++  'j': 'ʲ',
++  'k': 'ᵏ',
++  'l': 'ˡ',
++  'm': 'ᵐ',
++  'n': 'ⁿ',
++  'o': 'ᵒ',
++  'p': 'ᵖ',
++  'r': 'ʳ',
++  's': 'ˢ',
++  't': 'ᵗ',
++  'u': 'ᵘ',
++  'v': 'ᵛ',
++  'w': 'ʷ',
++  'x': 'ˣ',
++  'y': 'ʸ',
++  'z': 'ᶻ'
+ }
+ 
+-// Replace a decimal with it's percentage value
+-function convertToPercentage(n) {
+-    if (n <= 1) {
+-        n = (n * 100) + "%";
++function toSuperScript(x) {
++  return x.split('').map(function(c) {
++    if(c in SUPERSCRIPTS) {
++      return SUPERSCRIPTS[c]
+     }
+-
+-    return n;
+-}
+-
+-// Converts a decimal to a hex value
+-function convertDecimalToHex(d) {
+-    return Math.round(parseFloat(d) * 255).toString(16);
+-}
+-// Converts a hex value to a decimal
+-function convertHexToDecimal(h) {
+-    return (parseIntFromHex(h) / 255);
++    return ''
++  }).join('')
+ }
+ 
+-var matchers = (function() {
+-
+-    // <http://www.w3.org/TR/css3-values/#integers>
+-    var CSS_INTEGER = "[-\\+]?\\d+%?";
+-
+-    // <http://www.w3.org/TR/css3-values/#number-value>
+-    var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";
+-
+-    // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
+-    var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";
++},{}],239:[function(require,module,exports){
++"use strict"
+ 
+-    // Actual matching.
+-    // Parentheses and commas are optional, but not required.
+-    // Whitespace can take the place of commas or opening paren
+-    var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+-    var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
++module.exports = surfaceNets
+ 
+-    return {
+-        rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
+-        rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
+-        hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
+-        hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
+-        hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
+-        hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
+-        hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+-        hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
+-        hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
+-    };
+-})();
++var generateContourExtractor = require("ndarray-extract-contour")
++var triangulateCube = require("triangulate-hypercube")
++var zeroCrossings = require("zero-crossings")
+ 
+-// `stringInputToObject`
+-// Permissive string parsing.  Take in a number of formats, and output an object
+-// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
+-function stringInputToObject(color) {
++function buildSurfaceNets(order, dtype) {
++  var dimension = order.length
++  var code = ["'use strict';"]
++  var funcName = "surfaceNets" + order.join("_") + "d" + dtype
+ 
+-    color = color.replace(trimLeft,'').replace(trimRight, '').toLowerCase();
+-    var named = false;
+-    if (names[color]) {
+-        color = names[color];
+-        named = true;
+-    }
+-    else if (color == 'transparent') {
+-        return { r: 0, g: 0, b: 0, a: 0, format: "name" };
+-    }
++  //Contour extraction function
++  code.push(
++    "var contour=genContour({",
++      "order:[", order.join(), "],",
++      "scalarArguments: 3,",
++      "phase:function phaseFunc(p,a,b,c) { return (p > c)|0 },")
++  if(dtype === "generic") {
++    code.push("getters:[0],")
++  }
+ 
+-    // Try to match string input using regular expressions.
+-    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
+-    // Just return an object and let the conversion functions handle that.
+-    // This way the result will be the same whether the tinycolor is initialized with string or object.
+-    var match;
+-    if ((match = matchers.rgb.exec(color))) {
+-        return { r: match[1], g: match[2], b: match[3] };
+-    }
+-    if ((match = matchers.rgba.exec(color))) {
+-        return { r: match[1], g: match[2], b: match[3], a: match[4] };
+-    }
+-    if ((match = matchers.hsl.exec(color))) {
+-        return { h: match[1], s: match[2], l: match[3] };
+-    }
+-    if ((match = matchers.hsla.exec(color))) {
+-        return { h: match[1], s: match[2], l: match[3], a: match[4] };
+-    }
+-    if ((match = matchers.hsv.exec(color))) {
+-        return { h: match[1], s: match[2], v: match[3] };
+-    }
+-    if ((match = matchers.hsva.exec(color))) {
+-        return { h: match[1], s: match[2], v: match[3], a: match[4] };
+-    }
+-    if ((match = matchers.hex8.exec(color))) {
+-        return {
+-            a: convertHexToDecimal(match[1]),
+-            r: parseIntFromHex(match[2]),
+-            g: parseIntFromHex(match[3]),
+-            b: parseIntFromHex(match[4]),
+-            format: named ? "name" : "hex8"
+-        };
+-    }
+-    if ((match = matchers.hex6.exec(color))) {
+-        return {
+-            r: parseIntFromHex(match[1]),
+-            g: parseIntFromHex(match[2]),
+-            b: parseIntFromHex(match[3]),
+-            format: named ? "name" : "hex"
+-        };
++  //Generate vertex function
++  var cubeArgs = []
++  var extraArgs = []
++  for(var i=0; i<dimension; ++i) {
++    cubeArgs.push("d" + i)
++    extraArgs.push("d" + i)
++  }
++  for(var i=0; i<(1<<dimension); ++i) {
++    cubeArgs.push("v" + i)
++    extraArgs.push("v" + i)
++  }
++  for(var i=0; i<(1<<dimension); ++i) {
++    cubeArgs.push("p" + i)
++    extraArgs.push("p" + i)
++  }
++  cubeArgs.push("a", "b", "c")
++  extraArgs.push("a", "c")
++  code.push("vertex:function vertexFunc(", cubeArgs.join(), "){")
++  //Mask args together
++  var maskStr = []
++  for(var i=0; i<(1<<dimension); ++i) {
++    maskStr.push("(p" + i + "<<" + i + ")")
++  }
++  //Generate variables and giganto switch statement
++  code.push("var m=(", maskStr.join("+"), ")|0;if(m===0||m===", (1<<(1<<dimension))-1, "){return}")
++  var extraFuncs = []
++  var currentFunc = []
++  if(1<<(1<<dimension) <= 128) {
++    code.push("switch(m){")
++    currentFunc = code
++  } else {
++    code.push("switch(m>>>7){")
++  }
++  for(var i=0; i<1<<(1<<dimension); ++i) {
++    if(1<<(1<<dimension) > 128) {
++      if((i%128)===0) {
++        if(extraFuncs.length > 0) {
++          currentFunc.push("}}")
++        }
++        var efName = "vExtra" + extraFuncs.length
++        code.push("case ", (i>>>7), ":", efName, "(m&0x7f,", extraArgs.join(), ");break;")
++        currentFunc = [
++          "function ", efName, "(m,", extraArgs.join(), "){switch(m){"
++        ]
++        extraFuncs.push(currentFunc)
++      }  
+     }
+-    if ((match = matchers.hex3.exec(color))) {
+-        return {
+-            r: parseIntFromHex(match[1] + '' + match[1]),
+-            g: parseIntFromHex(match[2] + '' + match[2]),
+-            b: parseIntFromHex(match[3] + '' + match[3]),
+-            format: named ? "name" : "hex"
+-        };
++    currentFunc.push("case ", (i&0x7f), ":")
++    var crossings = new Array(dimension)
++    var denoms = new Array(dimension)
++    var crossingCount = new Array(dimension)
++    var bias = new Array(dimension)
++    var totalCrossings = 0
++    for(var j=0; j<dimension; ++j) {
++      crossings[j] = []
++      denoms[j] = []
++      crossingCount[j] = 0
++      bias[j] = 0
+     }
+-
+-    return false;
+-}
+-
+-function validateWCAG2Parms(parms) {
+-    // return valid WCAG2 parms for isReadable.
+-    // If input parms are invalid, return {"level":"AA", "size":"small"}
+-    var level, size;
+-    parms = parms || {"level":"AA", "size":"small"};
+-    level = (parms.level || "AA").toUpperCase();
+-    size = (parms.size || "small").toLowerCase();
+-    if (level !== "AA" && level !== "AAA") {
+-        level = "AA";
++    for(var j=0; j<(1<<dimension); ++j) {
++      for(var k=0; k<dimension; ++k) {
++        var u = j ^ (1<<k)
++        if(u > j) {
++          continue
++        }
++        if(!(i&(1<<u)) !== !(i&(1<<j))) {
++          var sign = 1
++          if(i&(1<<u)) {
++            denoms[k].push("v" + u + "-v" + j)
++          } else {
++            denoms[k].push("v" + j + "-v" + u)
++            sign = -sign
++          }
++          if(sign < 0) {
++            crossings[k].push("-v" + j + "-v" + u)
++            crossingCount[k] += 2
++          } else {
++            crossings[k].push("v" + j + "+v" + u)
++            crossingCount[k] -= 2            
++          }
++          totalCrossings += 1
++          for(var l=0; l<dimension; ++l) {
++            if(l === k) {
++              continue
++            }
++            if(u&(1<<l)) {
++              bias[l] += 1
++            } else {
++              bias[l] -= 1
++            }
++          }
++        }
++      }
+     }
+-    if (size !== "small" && size !== "large") {
+-        size = "small";
++    var vertexStr = []
++    for(var k=0; k<dimension; ++k) {
++      if(crossings[k].length === 0) {
++        vertexStr.push("d" + k + "-0.5")
++      } else {
++        var cStr = ""
++        if(crossingCount[k] < 0) {
++          cStr = crossingCount[k] + "*c"
++        } else if(crossingCount[k] > 0) {
++          cStr = "+" + crossingCount[k] + "*c"
++        }
++        var weight = 0.5 * (crossings[k].length / totalCrossings)
++        var shift = 0.5 + 0.5 * (bias[k] / totalCrossings)
++        vertexStr.push("d" + k + "-" + shift + "-" + weight + "*(" + crossings[k].join("+") + cStr + ")/(" + denoms[k].join("+") + ")")
++        
++      }
+     }
+-    return {"level":level, "size":size};
+-}
+-
+-// Node: Export function
+-if (typeof module !== "undefined" && module.exports) {
+-    module.exports = tinycolor;
+-}
+-// AMD/requirejs: Define the module
+-else if (typeof define === 'function' && define.amd) {
+-    define(function () {return tinycolor;});
+-}
+-// Browser: Expose to window
+-else {
+-    window.tinycolor = tinycolor;
+-}
+-
+-})();
+-
+-},{}],240:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = twoProduct
+-
+-var SPLITTER = +(Math.pow(2, 27) + 1.0)
+-
+-function twoProduct(a, b, result) {
+-  var x = a * b
+-
+-  var c = SPLITTER * a
+-  var abig = c - a
+-  var ahi = c - abig
+-  var alo = a - ahi
+-
+-  var d = SPLITTER * b
+-  var bbig = d - b
+-  var bhi = d - bbig
+-  var blo = b - bhi
++    currentFunc.push("a.push([", vertexStr.join(), "]);",
++      "break;")
++  }
++  code.push("}},")
++  if(extraFuncs.length > 0) {
++    currentFunc.push("}}")
++  }
+ 
+-  var err1 = x - (ahi * bhi)
+-  var err2 = err1 - (alo * bhi)
+-  var err3 = err2 - (ahi * blo)
++  //Create face function
++  var faceArgs = []
++  for(var i=0; i<(1<<(dimension-1)); ++i) {
++    faceArgs.push("v" + i)
++  }
++  faceArgs.push("c0", "c1", "p0", "p1", "a", "b", "c")
++  code.push("cell:function cellFunc(", faceArgs.join(), "){")
+ 
+-  var y = alo * blo - err3
++  var facets = triangulateCube(dimension-1)
++  code.push("if(p0){b.push(",
++    facets.map(function(f) {
++      return "[" + f.map(function(v) {
++        return "v" + v
++      }) + "]"
++    }).join(), ")}else{b.push(",
++    facets.map(function(f) {
++      var e = f.slice()
++      e.reverse()
++      return "[" + e.map(function(v) {
++        return "v" + v
++      }) + "]"
++    }).join(),
++    ")}}});function ", funcName, "(array,level){var verts=[],cells=[];contour(array,verts,cells,level);return {positions:verts,cells:cells};} return ", funcName, ";")
+ 
+-  if(result) {
+-    result[0] = y
+-    result[1] = x
+-    return result
++  for(var i=0; i<extraFuncs.length; ++i) {
++    code.push(extraFuncs[i].join(""))
+   }
+ 
+-  return [ y, x ]
++  //Compile and link
++  var proc = new Function("genContour", code.join(""))
++  return proc(generateContourExtractor)
+ }
+-},{}],241:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = fastTwoSum
+ 
+-function fastTwoSum(a, b, result) {
+-	var x = a + b
+-	var bv = x - a
+-	var av = x - bv
+-	var br = b - bv
+-	var ar = a - av
+-	if(result) {
+-		result[0] = ar + br
+-		result[1] = x
+-		return result
+-	}
+-	return [ar+br, x]
++//1D case: Need to handle specially
++function mesh1D(array, level) {
++  var zc = zeroCrossings(array, level)
++  var n = zc.length
++  var npos = new Array(n)
++  var ncel = new Array(n)
++  for(var i=0; i<n; ++i) {
++    npos[i] = [ zc[i] ]
++    ncel[i] = [ i ]
++  }
++  return {
++    positions: npos,
++    cells: ncel
++  }
+ }
+-},{}],242:[function(require,module,exports){
+-(function (global,Buffer){
+-'use strict'
+ 
+-var bits = require('bit-twiddle')
+-var dup = require('dup')
++var CACHE = {}
+ 
+-//Legacy pool support
+-if(!global.__TYPEDARRAY_POOL) {
+-  global.__TYPEDARRAY_POOL = {
+-      UINT8   : dup([32, 0])
+-    , UINT16  : dup([32, 0])
+-    , UINT32  : dup([32, 0])
+-    , INT8    : dup([32, 0])
+-    , INT16   : dup([32, 0])
+-    , INT32   : dup([32, 0])
+-    , FLOAT   : dup([32, 0])
+-    , DOUBLE  : dup([32, 0])
+-    , DATA    : dup([32, 0])
+-    , UINT8C  : dup([32, 0])
+-    , BUFFER  : dup([32, 0])
++function surfaceNets(array,level) {
++  if(array.dimension <= 0) {
++    return { positions: [], cells: [] }
++  } else if(array.dimension === 1) {
++    return mesh1D(array, level)
++  }
++  var typesig = array.order.join() + "-" + array.dtype
++  var proc = CACHE[typesig]
++  var level = (+level) || 0.0
++  if(!proc) {
++    proc = CACHE[typesig] = buildSurfaceNets(array.order, array.dtype)
+   }
++  return proc(array,level)
+ }
++},{"ndarray-extract-contour":180,"triangulate-hypercube":242,"zero-crossings":256}],240:[function(require,module,exports){
++// TinyColor v1.4.1
++// https://github.com/bgrins/TinyColor
++// Brian Grinstead, MIT License
+ 
+-var hasUint8C = (typeof Uint8ClampedArray) !== 'undefined'
+-var POOL = global.__TYPEDARRAY_POOL
++(function(Math) {
+ 
+-//Upgrade pool
+-if(!POOL.UINT8C) {
+-  POOL.UINT8C = dup([32, 0])
+-}
+-if(!POOL.BUFFER) {
+-  POOL.BUFFER = dup([32, 0])
+-}
++var trimLeft = /^\s+/,
++    trimRight = /\s+$/,
++    tinyCounter = 0,
++    mathRound = Math.round,
++    mathMin = Math.min,
++    mathMax = Math.max,
++    mathRandom = Math.random;
+ 
+-//New technique: Only allocate from ArrayBufferView and Buffer
+-var DATA    = POOL.DATA
+-  , BUFFER  = POOL.BUFFER
++function tinycolor (color, opts) {
+ 
+-exports.free = function free(array) {
+-  if(Buffer.isBuffer(array)) {
+-    BUFFER[bits.log2(array.length)].push(array)
+-  } else {
+-    if(Object.prototype.toString.call(array) !== '[object ArrayBuffer]') {
+-      array = array.buffer
++    color = (color) ? color : '';
++    opts = opts || { };
++
++    // If input is already a tinycolor, return itself
++    if (color instanceof tinycolor) {
++       return color;
+     }
+-    if(!array) {
+-      return
++    // If we are called as a function, call using new instead
++    if (!(this instanceof tinycolor)) {
++        return new tinycolor(color, opts);
+     }
+-    var n = array.length || array.byteLength
+-    var log_n = bits.log2(n)|0
+-    DATA[log_n].push(array)
+-  }
+-}
+ 
+-function freeArrayBuffer(buffer) {
+-  if(!buffer) {
+-    return
+-  }
+-  var n = buffer.length || buffer.byteLength
+-  var log_n = bits.log2(n)
+-  DATA[log_n].push(buffer)
+-}
++    var rgb = inputToRGB(color);
++    this._originalInput = color,
++    this._r = rgb.r,
++    this._g = rgb.g,
++    this._b = rgb.b,
++    this._a = rgb.a,
++    this._roundA = mathRound(100*this._a) / 100,
++    this._format = opts.format || rgb.format;
++    this._gradientType = opts.gradientType;
+ 
+-function freeTypedArray(array) {
+-  freeArrayBuffer(array.buffer)
++    // Don't let the range of [0,255] come back in [0,1].
++    // Potentially lose a little bit of precision here, but will fix issues where
++    // .5 gets interpreted as half of the total, instead of half of 1
++    // If it was supposed to be 128, this was already taken care of by `inputToRgb`
++    if (this._r < 1) { this._r = mathRound(this._r); }
++    if (this._g < 1) { this._g = mathRound(this._g); }
++    if (this._b < 1) { this._b = mathRound(this._b); }
++
++    this._ok = rgb.ok;
++    this._tc_id = tinyCounter++;
+ }
+ 
+-exports.freeUint8 =
+-exports.freeUint16 =
+-exports.freeUint32 =
+-exports.freeInt8 =
+-exports.freeInt16 =
+-exports.freeInt32 =
+-exports.freeFloat32 = 
+-exports.freeFloat =
+-exports.freeFloat64 = 
+-exports.freeDouble = 
+-exports.freeUint8Clamped = 
+-exports.freeDataView = freeTypedArray
++tinycolor.prototype = {
++    isDark: function() {
++        return this.getBrightness() < 128;
++    },
++    isLight: function() {
++        return !this.isDark();
++    },
++    isValid: function() {
++        return this._ok;
++    },
++    getOriginalInput: function() {
++      return this._originalInput;
++    },
++    getFormat: function() {
++        return this._format;
++    },
++    getAlpha: function() {
++        return this._a;
++    },
++    getBrightness: function() {
++        //http://www.w3.org/TR/AERT#color-contrast
++        var rgb = this.toRgb();
++        return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
++    },
++    getLuminance: function() {
++        //http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
++        var rgb = this.toRgb();
++        var RsRGB, GsRGB, BsRGB, R, G, B;
++        RsRGB = rgb.r/255;
++        GsRGB = rgb.g/255;
++        BsRGB = rgb.b/255;
+ 
+-exports.freeArrayBuffer = freeArrayBuffer
++        if (RsRGB <= 0.03928) {R = RsRGB / 12.92;} else {R = Math.pow(((RsRGB + 0.055) / 1.055), 2.4);}
++        if (GsRGB <= 0.03928) {G = GsRGB / 12.92;} else {G = Math.pow(((GsRGB + 0.055) / 1.055), 2.4);}
++        if (BsRGB <= 0.03928) {B = BsRGB / 12.92;} else {B = Math.pow(((BsRGB + 0.055) / 1.055), 2.4);}
++        return (0.2126 * R) + (0.7152 * G) + (0.0722 * B);
++    },
++    setAlpha: function(value) {
++        this._a = boundAlpha(value);
++        this._roundA = mathRound(100*this._a) / 100;
++        return this;
++    },
++    toHsv: function() {
++        var hsv = rgbToHsv(this._r, this._g, this._b);
++        return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: this._a };
++    },
++    toHsvString: function() {
++        var hsv = rgbToHsv(this._r, this._g, this._b);
++        var h = mathRound(hsv.h * 360), s = mathRound(hsv.s * 100), v = mathRound(hsv.v * 100);
++        return (this._a == 1) ?
++          "hsv("  + h + ", " + s + "%, " + v + "%)" :
++          "hsva(" + h + ", " + s + "%, " + v + "%, "+ this._roundA + ")";
++    },
++    toHsl: function() {
++        var hsl = rgbToHsl(this._r, this._g, this._b);
++        return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: this._a };
++    },
++    toHslString: function() {
++        var hsl = rgbToHsl(this._r, this._g, this._b);
++        var h = mathRound(hsl.h * 360), s = mathRound(hsl.s * 100), l = mathRound(hsl.l * 100);
++        return (this._a == 1) ?
++          "hsl("  + h + ", " + s + "%, " + l + "%)" :
++          "hsla(" + h + ", " + s + "%, " + l + "%, "+ this._roundA + ")";
++    },
++    toHex: function(allow3Char) {
++        return rgbToHex(this._r, this._g, this._b, allow3Char);
++    },
++    toHexString: function(allow3Char) {
++        return '#' + this.toHex(allow3Char);
++    },
++    toHex8: function(allow4Char) {
++        return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
++    },
++    toHex8String: function(allow4Char) {
++        return '#' + this.toHex8(allow4Char);
++    },
++    toRgb: function() {
++        return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
++    },
++    toRgbString: function() {
++        return (this._a == 1) ?
++          "rgb("  + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ")" :
++          "rgba(" + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ", " + this._roundA + ")";
++    },
++    toPercentageRgb: function() {
++        return { r: mathRound(bound01(this._r, 255) * 100) + "%", g: mathRound(bound01(this._g, 255) * 100) + "%", b: mathRound(bound01(this._b, 255) * 100) + "%", a: this._a };
++    },
++    toPercentageRgbString: function() {
++        return (this._a == 1) ?
++          "rgb("  + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%)" :
++          "rgba(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%, " + this._roundA + ")";
++    },
++    toName: function() {
++        if (this._a === 0) {
++            return "transparent";
++        }
+ 
+-exports.freeBuffer = function freeBuffer(array) {
+-  BUFFER[bits.log2(array.length)].push(array)
+-}
++        if (this._a < 1) {
++            return false;
++        }
+ 
+-exports.malloc = function malloc(n, dtype) {
+-  if(dtype === undefined || dtype === 'arraybuffer') {
+-    return mallocArrayBuffer(n)
+-  } else {
+-    switch(dtype) {
+-      case 'uint8':
+-        return mallocUint8(n)
+-      case 'uint16':
+-        return mallocUint16(n)
+-      case 'uint32':
+-        return mallocUint32(n)
+-      case 'int8':
+-        return mallocInt8(n)
+-      case 'int16':
+-        return mallocInt16(n)
+-      case 'int32':
+-        return mallocInt32(n)
+-      case 'float':
+-      case 'float32':
+-        return mallocFloat(n)
+-      case 'double':
+-      case 'float64':
+-        return mallocDouble(n)
+-      case 'uint8_clamped':
+-        return mallocUint8Clamped(n)
+-      case 'buffer':
+-        return mallocBuffer(n)
+-      case 'data':
+-      case 'dataview':
+-        return mallocDataView(n)
++        return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
++    },
++    toFilter: function(secondColor) {
++        var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
++        var secondHex8String = hex8String;
++        var gradientType = this._gradientType ? "GradientType = 1, " : "";
+ 
+-      default:
+-        return null
++        if (secondColor) {
++            var s = tinycolor(secondColor);
++            secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
++        }
++
++        return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
++    },
++    toString: function(format) {
++        var formatSet = !!format;
++        format = format || this._format;
++
++        var formattedString = false;
++        var hasAlpha = this._a < 1 && this._a >= 0;
++        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");
++
++        if (needsAlphaFormat) {
++            // Special case for "transparent", all other non-alpha formats
++            // will return rgba when there is transparency.
++            if (format === "name" && this._a === 0) {
++                return this.toName();
++            }
++            return this.toRgbString();
++        }
++        if (format === "rgb") {
++            formattedString = this.toRgbString();
++        }
++        if (format === "prgb") {
++            formattedString = this.toPercentageRgbString();
++        }
++        if (format === "hex" || format === "hex6") {
++            formattedString = this.toHexString();
++        }
++        if (format === "hex3") {
++            formattedString = this.toHexString(true);
++        }
++        if (format === "hex4") {
++            formattedString = this.toHex8String(true);
++        }
++        if (format === "hex8") {
++            formattedString = this.toHex8String();
++        }
++        if (format === "name") {
++            formattedString = this.toName();
++        }
++        if (format === "hsl") {
++            formattedString = this.toHslString();
++        }
++        if (format === "hsv") {
++            formattedString = this.toHsvString();
++        }
++
++        return formattedString || this.toHexString();
++    },
++    clone: function() {
++        return tinycolor(this.toString());
++    },
++
++    _applyModification: function(fn, args) {
++        var color = fn.apply(null, [this].concat([].slice.call(args)));
++        this._r = color._r;
++        this._g = color._g;
++        this._b = color._b;
++        this.setAlpha(color._a);
++        return this;
++    },
++    lighten: function() {
++        return this._applyModification(lighten, arguments);
++    },
++    brighten: function() {
++        return this._applyModification(brighten, arguments);
++    },
++    darken: function() {
++        return this._applyModification(darken, arguments);
++    },
++    desaturate: function() {
++        return this._applyModification(desaturate, arguments);
++    },
++    saturate: function() {
++        return this._applyModification(saturate, arguments);
++    },
++    greyscale: function() {
++        return this._applyModification(greyscale, arguments);
++    },
++    spin: function() {
++        return this._applyModification(spin, arguments);
++    },
++
++    _applyCombination: function(fn, args) {
++        return fn.apply(null, [this].concat([].slice.call(args)));
++    },
++    analogous: function() {
++        return this._applyCombination(analogous, arguments);
++    },
++    complement: function() {
++        return this._applyCombination(complement, arguments);
++    },
++    monochromatic: function() {
++        return this._applyCombination(monochromatic, arguments);
++    },
++    splitcomplement: function() {
++        return this._applyCombination(splitcomplement, arguments);
++    },
++    triad: function() {
++        return this._applyCombination(triad, arguments);
++    },
++    tetrad: function() {
++        return this._applyCombination(tetrad, arguments);
+     }
+-  }
+-  return null
+-}
++};
+ 
+-function mallocArrayBuffer(n) {
+-  var n = bits.nextPow2(n)
+-  var log_n = bits.log2(n)
+-  var d = DATA[log_n]
+-  if(d.length > 0) {
+-    return d.pop()
+-  }
+-  return new ArrayBuffer(n)
+-}
+-exports.mallocArrayBuffer = mallocArrayBuffer
++// If input is an object, force 1 into "1.0" to handle ratios properly
++// String input requires "1.0" as input, so 1 will be treated as 1
++tinycolor.fromRatio = function(color, opts) {
++    if (typeof color == "object") {
++        var newColor = {};
++        for (var i in color) {
++            if (color.hasOwnProperty(i)) {
++                if (i === "a") {
++                    newColor[i] = color[i];
++                }
++                else {
++                    newColor[i] = convertToPercentage(color[i]);
++                }
++            }
++        }
++        color = newColor;
++    }
+ 
+-function mallocUint8(n) {
+-  return new Uint8Array(mallocArrayBuffer(n), 0, n)
+-}
+-exports.mallocUint8 = mallocUint8
++    return tinycolor(color, opts);
++};
+ 
+-function mallocUint16(n) {
+-  return new Uint16Array(mallocArrayBuffer(2*n), 0, n)
+-}
+-exports.mallocUint16 = mallocUint16
++// Given a string or object, convert that input to RGB
++// Possible string inputs:
++//
++//     "red"
++//     "#f00" or "f00"
++//     "#ff0000" or "ff0000"
++//     "#ff000000" or "ff000000"
++//     "rgb 255 0 0" or "rgb (255, 0, 0)"
++//     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
++//     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
++//     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
++//     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
++//     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
++//     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
++//
++function inputToRGB(color) {
+ 
+-function mallocUint32(n) {
+-  return new Uint32Array(mallocArrayBuffer(4*n), 0, n)
+-}
+-exports.mallocUint32 = mallocUint32
++    var rgb = { r: 0, g: 0, b: 0 };
++    var a = 1;
++    var s = null;
++    var v = null;
++    var l = null;
++    var ok = false;
++    var format = false;
+ 
+-function mallocInt8(n) {
+-  return new Int8Array(mallocArrayBuffer(n), 0, n)
+-}
+-exports.mallocInt8 = mallocInt8
++    if (typeof color == "string") {
++        color = stringInputToObject(color);
++    }
+ 
+-function mallocInt16(n) {
+-  return new Int16Array(mallocArrayBuffer(2*n), 0, n)
+-}
+-exports.mallocInt16 = mallocInt16
++    if (typeof color == "object") {
++        if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
++            rgb = rgbToRgb(color.r, color.g, color.b);
++            ok = true;
++            format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
++        }
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
++            s = convertToPercentage(color.s);
++            v = convertToPercentage(color.v);
++            rgb = hsvToRgb(color.h, s, v);
++            ok = true;
++            format = "hsv";
++        }
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
++            s = convertToPercentage(color.s);
++            l = convertToPercentage(color.l);
++            rgb = hslToRgb(color.h, s, l);
++            ok = true;
++            format = "hsl";
++        }
+ 
+-function mallocInt32(n) {
+-  return new Int32Array(mallocArrayBuffer(4*n), 0, n)
+-}
+-exports.mallocInt32 = mallocInt32
++        if (color.hasOwnProperty("a")) {
++            a = color.a;
++        }
++    }
+ 
+-function mallocFloat(n) {
+-  return new Float32Array(mallocArrayBuffer(4*n), 0, n)
+-}
+-exports.mallocFloat32 = exports.mallocFloat = mallocFloat
++    a = boundAlpha(a);
+ 
+-function mallocDouble(n) {
+-  return new Float64Array(mallocArrayBuffer(8*n), 0, n)
++    return {
++        ok: ok,
++        format: color.format || format,
++        r: mathMin(255, mathMax(rgb.r, 0)),
++        g: mathMin(255, mathMax(rgb.g, 0)),
++        b: mathMin(255, mathMax(rgb.b, 0)),
++        a: a
++    };
+ }
+-exports.mallocFloat64 = exports.mallocDouble = mallocDouble
+ 
+-function mallocUint8Clamped(n) {
+-  if(hasUint8C) {
+-    return new Uint8ClampedArray(mallocArrayBuffer(n), 0, n)
+-  } else {
+-    return mallocUint8(n)
+-  }
+-}
+-exports.mallocUint8Clamped = mallocUint8Clamped
+ 
+-function mallocDataView(n) {
+-  return new DataView(mallocArrayBuffer(n), 0, n)
+-}
+-exports.mallocDataView = mallocDataView
++// Conversion Functions
++// --------------------
+ 
+-function mallocBuffer(n) {
+-  n = bits.nextPow2(n)
+-  var log_n = bits.log2(n)
+-  var cache = BUFFER[log_n]
+-  if(cache.length > 0) {
+-    return cache.pop()
+-  }
+-  return new Buffer(n)
+-}
+-exports.mallocBuffer = mallocBuffer
++// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
++// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>
+ 
+-exports.clearCache = function clearCache() {
+-  for(var i=0; i<32; ++i) {
+-    POOL.UINT8[i].length = 0
+-    POOL.UINT16[i].length = 0
+-    POOL.UINT32[i].length = 0
+-    POOL.INT8[i].length = 0
+-    POOL.INT16[i].length = 0
+-    POOL.INT32[i].length = 0
+-    POOL.FLOAT[i].length = 0
+-    POOL.DOUBLE[i].length = 0
+-    POOL.UINT8C[i].length = 0
+-    DATA[i].length = 0
+-    BUFFER[i].length = 0
+-  }
++// `rgbToRgb`
++// Handle bounds / percentage checking to conform to CSS color spec
++// <http://www.w3.org/TR/css3-color/>
++// *Assumes:* r, g, b in [0, 255] or [0, 1]
++// *Returns:* { r, g, b } in [0, 255]
++function rgbToRgb(r, g, b){
++    return {
++        r: bound01(r, 255) * 255,
++        g: bound01(g, 255) * 255,
++        b: bound01(b, 255) * 255
++    };
+ }
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
+-},{"bit-twiddle":38,"buffer":39,"dup":102}],243:[function(require,module,exports){
+-"use strict"
+ 
+-function unique_pred(list, compare) {
+-  var ptr = 1
+-    , len = list.length
+-    , a=list[0], b=list[0]
+-  for(var i=1; i<len; ++i) {
+-    b = a
+-    a = list[i]
+-    if(compare(a, b)) {
+-      if(i === ptr) {
+-        ptr++
+-        continue
+-      }
+-      list[ptr++] = a
+-    }
+-  }
+-  list.length = ptr
+-  return list
+-}
++// `rgbToHsl`
++// Converts an RGB color value to HSL.
++// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
++// *Returns:* { h, s, l } in [0,1]
++function rgbToHsl(r, g, b) {
+ 
+-function unique_eq(list) {
+-  var ptr = 1
+-    , len = list.length
+-    , a=list[0], b = list[0]
+-  for(var i=1; i<len; ++i, b=a) {
+-    b = a
+-    a = list[i]
+-    if(a !== b) {
+-      if(i === ptr) {
+-        ptr++
+-        continue
+-      }
+-      list[ptr++] = a
++    r = bound01(r, 255);
++    g = bound01(g, 255);
++    b = bound01(b, 255);
++
++    var max = mathMax(r, g, b), min = mathMin(r, g, b);
++    var h, s, l = (max + min) / 2;
++
++    if(max == min) {
++        h = s = 0; // achromatic
+     }
+-  }
+-  list.length = ptr
+-  return list
+-}
++    else {
++        var d = max - min;
++        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
++        switch(max) {
++            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
++            case g: h = (b - r) / d + 2; break;
++            case b: h = (r - g) / d + 4; break;
++        }
+ 
+-function unique(list, compare, sorted) {
+-  if(list.length === 0) {
+-    return list
+-  }
+-  if(compare) {
+-    if(!sorted) {
+-      list.sort(compare)
++        h /= 6;
+     }
+-    return unique_pred(list, compare)
+-  }
+-  if(!sorted) {
+-    list.sort()
+-  }
+-  return unique_eq(list)
+-}
+ 
+-module.exports = unique
++    return { h: h, s: s, l: l };
++}
+ 
+-},{}],244:[function(require,module,exports){
+-"use strict"
++// `hslToRgb`
++// Converts an HSL color value to RGB.
++// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
++// *Returns:* { r, g, b } in the set [0, 255]
++function hslToRgb(h, s, l) {
++    var r, g, b;
+ 
+-module.exports = createText
++    h = bound01(h, 360);
++    s = bound01(s, 100);
++    l = bound01(l, 100);
+ 
+-var vectorizeText = require("./lib/vtext")
+-var defaultCanvas = null
+-var defaultContext = null
++    function hue2rgb(p, q, t) {
++        if(t < 0) t += 1;
++        if(t > 1) t -= 1;
++        if(t < 1/6) return p + (q - p) * 6 * t;
++        if(t < 1/2) return q;
++        if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
++        return p;
++    }
+ 
+-if(typeof document !== 'undefined') {
+-  defaultCanvas = document.createElement('canvas')
+-  defaultCanvas.width = 8192
+-  defaultCanvas.height = 1024
+-  defaultContext = defaultCanvas.getContext("2d")
+-}
++    if(s === 0) {
++        r = g = b = l; // achromatic
++    }
++    else {
++        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
++        var p = 2 * l - q;
++        r = hue2rgb(p, q, h + 1/3);
++        g = hue2rgb(p, q, h);
++        b = hue2rgb(p, q, h - 1/3);
++    }
+ 
+-function createText(str, options) {
+-  if((typeof options !== "object") || (options === null)) {
+-    options = {}
+-  }
+-  return vectorizeText(
+-    str,
+-    options.canvas || defaultCanvas,
+-    options.context || defaultContext,
+-    options)
++    return { r: r * 255, g: g * 255, b: b * 255 };
+ }
+ 
+-},{"./lib/vtext":245}],245:[function(require,module,exports){
+-"use strict"
++// `rgbToHsv`
++// Converts an RGB color value to HSV
++// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
++// *Returns:* { h, s, v } in [0,1]
++function rgbToHsv(r, g, b) {
+ 
+-module.exports = vectorizeText
+-module.exports.processPixels = processPixels
++    r = bound01(r, 255);
++    g = bound01(g, 255);
++    b = bound01(b, 255);
+ 
+-var surfaceNets = require('surface-nets')
+-var ndarray = require('ndarray')
+-var simplify = require('simplify-planar-graph')
+-var cleanPSLG = require('clean-pslg')
+-var cdt2d = require('cdt2d')
+-var toPolygonCrappy = require('planar-graph-to-polyline')
++    var max = mathMax(r, g, b), min = mathMin(r, g, b);
++    var h, s, v = max;
+ 
+-function transformPositions(positions, options, size) {
+-  var align = options.textAlign || "start"
+-  var baseline = options.textBaseline || "alphabetic"
++    var d = max - min;
++    s = max === 0 ? 0 : d / max;
+ 
+-  var lo = [1<<30, 1<<30]
+-  var hi = [0,0]
+-  var n = positions.length
+-  for(var i=0; i<n; ++i) {
+-    var p = positions[i]
+-    for(var j=0; j<2; ++j) {
+-      lo[j] = Math.min(lo[j], p[j])|0
+-      hi[j] = Math.max(hi[j], p[j])|0
++    if(max == min) {
++        h = 0; // achromatic
+     }
+-  }
+-
+-  var xShift = 0
+-  switch(align) {
+-    case "center":
+-      xShift = -0.5 * (lo[0] + hi[0])
+-    break
++    else {
++        switch(max) {
++            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
++            case g: h = (b - r) / d + 2; break;
++            case b: h = (r - g) / d + 4; break;
++        }
++        h /= 6;
++    }
++    return { h: h, s: s, v: v };
++}
+ 
+-    case "right":
+-    case "end":
+-      xShift = -hi[0]
+-    break
++// `hsvToRgb`
++// Converts an HSV color value to RGB.
++// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
++// *Returns:* { r, g, b } in the set [0, 255]
++ function hsvToRgb(h, s, v) {
+ 
+-    case "left":
+-    case "start":
+-      xShift = -lo[0]
+-    break
++    h = bound01(h, 360) * 6;
++    s = bound01(s, 100);
++    v = bound01(v, 100);
+ 
+-    default:
+-      throw new Error("vectorize-text: Unrecognized textAlign: '" + align + "'")
+-  }
++    var i = Math.floor(h),
++        f = h - i,
++        p = v * (1 - s),
++        q = v * (1 - f * s),
++        t = v * (1 - (1 - f) * s),
++        mod = i % 6,
++        r = [v, q, p, p, t, v][mod],
++        g = [t, v, v, q, p, p][mod],
++        b = [p, p, t, v, v, q][mod];
+ 
+-  var yShift = 0
+-  switch(baseline) {
+-    case "hanging":
+-    case "top":
+-      yShift = -lo[1]
+-    break
++    return { r: r * 255, g: g * 255, b: b * 255 };
++}
+ 
+-    case "middle":
+-      yShift = -0.5 * (lo[1] + hi[1])
+-    break
++// `rgbToHex`
++// Converts an RGB color to hex
++// Assumes r, g, and b are contained in the set [0, 255]
++// Returns a 3 or 6 character hex
++function rgbToHex(r, g, b, allow3Char) {
+ 
+-    case "alphabetic":
+-    case "ideographic":
+-      yShift = -3 * size
+-    break
++    var hex = [
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16))
++    ];
+ 
+-    case "bottom":
+-      yShift = -hi[1]
+-    break
++    // Return a 3 character hex if possible
++    if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
++        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
++    }
+ 
+-    default:
+-      throw new Error("vectorize-text: Unrecoginized textBaseline: '" + baseline + "'")
+-  }
++    return hex.join("");
++}
+ 
+-  var scale = 1.0 / size
+-  if("lineHeight" in options) {
+-    scale *= +options.lineHeight
+-  } else if("width" in options) {
+-    scale = options.width / (hi[0] - lo[0])
+-  } else if("height" in options) {
+-    scale = options.height / (hi[1] - lo[1])
+-  }
++// `rgbaToHex`
++// Converts an RGBA color plus alpha transparency to hex
++// Assumes r, g, b are contained in the set [0, 255] and
++// a in [0, 1]. Returns a 4 or 8 character rgba hex
++function rgbaToHex(r, g, b, a, allow4Char) {
+ 
+-  return positions.map(function(p) {
+-    return [ scale * (p[0] + xShift), scale * (p[1] + yShift) ]
+-  })
+-}
++    var hex = [
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16)),
++        pad2(convertDecimalToHex(a))
++    ];
+ 
+-function getPixels(canvas, context, str, size) {
+-  var width = Math.ceil(context.measureText(str).width + 2*size)|0
+-  if(width > 8192) {
+-    throw new Error("vectorize-text: String too long (sorry, this will get fixed later)")
+-  }
+-  var height = 3 * size
+-  if(canvas.height < height) {
+-    canvas.height = height
+-  }
++    // Return a 4 character hex if possible
++    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
++        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
++    }
+ 
+-  context.fillStyle = "#000"
+-  context.fillRect(0, 0, canvas.width, canvas.height)
++    return hex.join("");
++}
+ 
+-  context.fillStyle = "#fff"
+-  context.fillText(str, size, 2*size)
++// `rgbaToArgbHex`
++// Converts an RGBA color to an ARGB Hex8 string
++// Rarely used, but required for "toFilter()"
++function rgbaToArgbHex(r, g, b, a) {
+ 
+-  //Cut pixels from image
+-  var pixelData = context.getImageData(0, 0, width, height)
+-  var pixels = ndarray(pixelData.data, [height, width, 4])
++    var hex = [
++        pad2(convertDecimalToHex(a)),
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16))
++    ];
+ 
+-  return pixels.pick(-1,-1,0).transpose(1,0)
++    return hex.join("");
+ }
+ 
+-function getContour(pixels, doSimplify) {
+-  var contour = surfaceNets(pixels, 128)
+-  if(doSimplify) {
+-    return simplify(contour.cells, contour.positions, 0.25)
+-  }
+-  return {
+-    edges: contour.cells,
+-    positions: contour.positions
+-  }
+-}
++// `equals`
++// Can be called with any tinycolor input
++tinycolor.equals = function (color1, color2) {
++    if (!color1 || !color2) { return false; }
++    return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
++};
+ 
+-function processPixelsImpl(pixels, options, size, simplify) {
+-  //Extract contour
+-  var contour = getContour(pixels, simplify)
++tinycolor.random = function() {
++    return tinycolor.fromRatio({
++        r: mathRandom(),
++        g: mathRandom(),
++        b: mathRandom()
++    });
++};
+ 
+-  //Apply warp to positions
+-  var positions = transformPositions(contour.positions, options, size)
+-  var edges     = contour.edges
+-  var flip = "ccw" === options.orientation
+ 
+-  //Clean up the PSLG, resolve self intersections, etc.
+-  cleanPSLG(positions, edges)
++// Modification Functions
++// ----------------------
++// Thanks to less.js for some of the basics here
++// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>
+ 
+-  //If triangulate flag passed, triangulate the result
+-  if(options.polygons || options.polygon || options.polyline) {
+-    var result = toPolygonCrappy(edges, positions)
+-    var nresult = new Array(result.length)
+-    for(var i=0; i<result.length; ++i) {
+-      var loops = result[i]
+-      var nloops = new Array(loops.length)
+-      for(var j=0; j<loops.length; ++j) {
+-        var loop = loops[j]
+-        var nloop = new Array(loop.length)
+-        for(var k=0; k<loop.length; ++k) {
+-          nloop[k] = positions[loop[k]].slice()
+-        }
+-        if(flip) {
+-          nloop.reverse()
+-        }
+-        nloops[j] = nloop
+-      }
+-      nresult[i] = nloops
+-    }
+-    return nresult
+-  } else if(options.triangles || options.triangulate || options.triangle) {
+-    return {
+-      cells: cdt2d(positions, edges, {
+-        delaunay: false,
+-        exterior: false,
+-        interior: true
+-      }),
+-      positions: positions
+-    }
+-  } else {
+-    return {
+-      edges:     edges,
+-      positions: positions
+-    }
+-  }
++function desaturate(color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.s -= amount / 100;
++    hsl.s = clamp01(hsl.s);
++    return tinycolor(hsl);
+ }
+ 
+-function processPixels(pixels, options, size) {
+-  try {
+-    return processPixelsImpl(pixels, options, size, true)
+-  } catch(e) {}
+-  try {
+-    return processPixelsImpl(pixels, options, size, false)
+-  } catch(e) {}
+-  if(options.polygons || options.polyline || options.polygon) {
+-    return []
+-  }
+-  if(options.triangles || options.triangulate || options.triangle) {
+-    return {
+-      cells: [],
+-      positions: []
+-    }
+-  }
+-  return {
+-    edges: [],
+-    positions: []
+-  }
++function saturate(color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.s += amount / 100;
++    hsl.s = clamp01(hsl.s);
++    return tinycolor(hsl);
+ }
+ 
+-function vectorizeText(str, canvas, context, options) {
+-  var size = options.size || 64
+-  var family = options.font || "normal"
++function greyscale(color) {
++    return tinycolor(color).desaturate(100);
++}
+ 
+-  context.font = size + "px " + family
+-  context.textAlign = "start"
+-  context.textBaseline = "alphabetic"
+-  context.direction = "ltr"
++function lighten (color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.l += amount / 100;
++    hsl.l = clamp01(hsl.l);
++    return tinycolor(hsl);
++}
+ 
+-  var pixels = getPixels(canvas, context, str, size)
++function brighten(color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var rgb = tinycolor(color).toRgb();
++    rgb.r = mathMax(0, mathMin(255, rgb.r - mathRound(255 * - (amount / 100))));
++    rgb.g = mathMax(0, mathMin(255, rgb.g - mathRound(255 * - (amount / 100))));
++    rgb.b = mathMax(0, mathMin(255, rgb.b - mathRound(255 * - (amount / 100))));
++    return tinycolor(rgb);
++}
+ 
+-  return processPixels(pixels, options, size)
++function darken (color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.l -= amount / 100;
++    hsl.l = clamp01(hsl.l);
++    return tinycolor(hsl);
+ }
+ 
+-},{"cdt2d":45,"clean-pslg":52,"ndarray":219,"planar-graph-to-polyline":258,"simplify-planar-graph":262,"surface-nets":238}],246:[function(require,module,exports){
+-'use strict'
++// Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
++// Values outside of this range will be wrapped into this range.
++function spin(color, amount) {
++    var hsl = tinycolor(color).toHsl();
++    var hue = (hsl.h + amount) % 360;
++    hsl.h = hue < 0 ? 360 + hue : hue;
++    return tinycolor(hsl);
++}
+ 
+-module.exports = trimLeaves
++// Combination Functions
++// ---------------------
++// Thanks to jQuery xColor for some of the ideas behind these
++// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>
+ 
+-var e2a = require('edges-to-adjacency-list')
++function complement(color) {
++    var hsl = tinycolor(color).toHsl();
++    hsl.h = (hsl.h + 180) % 360;
++    return tinycolor(hsl);
++}
+ 
+-function trimLeaves(edges, positions) {
+-  var adj = e2a(edges, positions.length)
+-  var live = new Array(positions.length)
+-  var nbhd = new Array(positions.length)
++function triad(color) {
++    var hsl = tinycolor(color).toHsl();
++    var h = hsl.h;
++    return [
++        tinycolor(color),
++        tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
++        tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
++    ];
++}
+ 
+-  var dead = []
+-  for(var i=0; i<positions.length; ++i) {
+-    var count = adj[i].length
+-    nbhd[i] = count
+-    live[i] = true
+-    if(count <= 1) {
+-      dead.push(i)
+-    }
+-  }
++function tetrad(color) {
++    var hsl = tinycolor(color).toHsl();
++    var h = hsl.h;
++    return [
++        tinycolor(color),
++        tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
++        tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
++        tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
++    ];
++}
+ 
+-  while(dead.length > 0) {
+-    var v = dead.pop()
+-    live[v] = false
+-    var n = adj[v]
+-    for(var i=0; i<n.length; ++i) {
+-      var u = n[i]
+-      if(--nbhd[u] === 0) {
+-        dead.push(u)
+-      }
+-    }
+-  }
++function splitcomplement(color) {
++    var hsl = tinycolor(color).toHsl();
++    var h = hsl.h;
++    return [
++        tinycolor(color),
++        tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l}),
++        tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l})
++    ];
++}
+ 
+-  var newIndex = new Array(positions.length)
+-  var npositions = []
+-  for(var i=0; i<positions.length; ++i) {
+-    if(live[i]) {
+-      var v = npositions.length
+-      newIndex[i] = v
+-      npositions.push(positions[i])
+-    } else {
+-      newIndex[i] = -1
+-    }
+-  }
++function analogous(color, results, slices) {
++    results = results || 6;
++    slices = slices || 30;
+ 
+-  var nedges = []
+-  for(var i=0; i<edges.length; ++i) {
+-    var e = edges[i]
+-    if(live[e[0]] && live[e[1]]) {
+-      nedges.push([ newIndex[e[0]], newIndex[e[1]] ])
++    var hsl = tinycolor(color).toHsl();
++    var part = 360 / slices;
++    var ret = [tinycolor(color)];
++
++    for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results; ) {
++        hsl.h = (hsl.h + part) % 360;
++        ret.push(tinycolor(hsl));
+     }
+-  }
+-  
+-  return [ nedges, npositions ]
++    return ret;
+ }
+-},{"edges-to-adjacency-list":247}],247:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = edgeToAdjacency
+ 
+-var uniq = require("uniq")
++function monochromatic(color, results) {
++    results = results || 6;
++    var hsv = tinycolor(color).toHsv();
++    var h = hsv.h, s = hsv.s, v = hsv.v;
++    var ret = [];
++    var modification = 1 / results;
+ 
+-function edgeToAdjacency(edges, numVertices) {
+-  var numEdges = edges.length
+-  if(typeof numVertices !== "number") {
+-    numVertices = 0
+-    for(var i=0; i<numEdges; ++i) {
+-      var e = edges[i]
+-      numVertices = Math.max(numVertices, e[0], e[1])
++    while (results--) {
++        ret.push(tinycolor({ h: h, s: s, v: v}));
++        v = (v + modification) % 1;
+     }
+-    numVertices = (numVertices|0) + 1
+-  }
+-  numVertices = numVertices|0
+-  var adj = new Array(numVertices)
+-  for(var i=0; i<numVertices; ++i) {
+-    adj[i] = []
+-  }
+-  for(var i=0; i<numEdges; ++i) {
+-    var e = edges[i]
+-    adj[e[0]].push(e[1])
+-    adj[e[1]].push(e[0])
+-  }
+-  for(var j=0; j<numVertices; ++j) {
+-    uniq(adj[j], function(a, b) {
+-      return a - b
+-    })
+-  }
+-  return adj
++
++    return ret;
+ }
+-},{"uniq":243}],248:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = planarDual
++// Utility Functions
++// ---------------------
+ 
+-var compareAngle = require("compare-angle")
++tinycolor.mix = function(color1, color2, amount) {
++    amount = (amount === 0) ? 0 : (amount || 50);
+ 
+-function planarDual(cells, positions) {
++    var rgb1 = tinycolor(color1).toRgb();
++    var rgb2 = tinycolor(color2).toRgb();
+ 
+-  var numVertices = positions.length|0
+-  var numEdges = cells.length
+-  var adj = [new Array(numVertices), new Array(numVertices)]
+-  for(var i=0; i<numVertices; ++i) {
+-    adj[0][i] = []
+-    adj[1][i] = []
+-  }
+-  for(var i=0; i<numEdges; ++i) {
+-    var c = cells[i]
+-    adj[0][c[0]].push(c)
+-    adj[1][c[1]].push(c)
+-  }
++    var p = amount / 100;
+ 
+-  var cycles = []
++    var rgba = {
++        r: ((rgb2.r - rgb1.r) * p) + rgb1.r,
++        g: ((rgb2.g - rgb1.g) * p) + rgb1.g,
++        b: ((rgb2.b - rgb1.b) * p) + rgb1.b,
++        a: ((rgb2.a - rgb1.a) * p) + rgb1.a
++    };
+ 
+-  //Add isolated vertices as trivial case
+-  for(var i=0; i<numVertices; ++i) {
+-    if(adj[0][i].length + adj[1][i].length === 0) {
+-      cycles.push( [i] )
+-    }
+-  }
++    return tinycolor(rgba);
++};
+ 
+-  //Remove a half edge
+-  function cut(c, i) {
+-    var a = adj[i][c[i]]
+-    a.splice(a.indexOf(c), 1)
+-  }
+ 
+-  //Find next vertex and cut edge
+-  function next(a, b, noCut) {
+-    var nextCell, nextVertex, nextDir
+-    for(var i=0; i<2; ++i) {
+-      if(adj[i][b].length > 0) {
+-        nextCell = adj[i][b][0]
+-        nextDir = i
+-        break
+-      }
+-    }
+-    nextVertex = nextCell[nextDir^1]
++// Readability Functions
++// ---------------------
++// <http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef (WCAG Version 2)
+ 
+-    for(var dir=0; dir<2; ++dir) {
+-      var nbhd = adj[dir][b]
+-      for(var k=0; k<nbhd.length; ++k) {
+-        var e = nbhd[k]
+-        var p = e[dir^1]
+-        var cmp = compareAngle(
+-            positions[a], 
+-            positions[b], 
+-            positions[nextVertex],
+-            positions[p])
+-        if(cmp > 0) {
+-          nextCell = e
+-          nextVertex = p
+-          nextDir = dir
+-        }
+-      }
+-    }
+-    if(noCut) {
+-      return nextVertex
+-    }
+-    if(nextCell) {
+-      cut(nextCell, nextDir)
+-    }
+-    return nextVertex
+-  }
++// `contrast`
++// Analyze the 2 colors and returns the color contrast defined by (WCAG Version 2)
++tinycolor.readability = function(color1, color2) {
++    var c1 = tinycolor(color1);
++    var c2 = tinycolor(color2);
++    return (Math.max(c1.getLuminance(),c2.getLuminance())+0.05) / (Math.min(c1.getLuminance(),c2.getLuminance())+0.05);
++};
+ 
+-  function extractCycle(v, dir) {
+-    var e0 = adj[dir][v][0]
+-    var cycle = [v]
+-    cut(e0, dir)
+-    var u = e0[dir^1]
+-    var d0 = dir
+-    while(true) {
+-      while(u !== v) {
+-        cycle.push(u)
+-        u = next(cycle[cycle.length-2], u, false)
+-      }
+-      if(adj[0][v].length + adj[1][v].length === 0) {
+-        break
+-      }
+-      var a = cycle[cycle.length-1]
+-      var b = v
+-      var c = cycle[1]
+-      var d = next(a, b, true)
+-      if(compareAngle(positions[a], positions[b], positions[c], positions[d]) < 0) {
+-        break
+-      }
+-      cycle.push(v)
+-      u = next(a, b)
++// `isReadable`
++// Ensure that foreground and background color combinations meet WCAG2 guidelines.
++// The third argument is an optional Object.
++//      the 'level' property states 'AA' or 'AAA' - if missing or invalid, it defaults to 'AA';
++//      the 'size' property states 'large' or 'small' - if missing or invalid, it defaults to 'small'.
++// If the entire object is absent, isReadable defaults to {level:"AA",size:"small"}.
++
++// *Example*
++//    tinycolor.isReadable("#000", "#111") => false
++//    tinycolor.isReadable("#000", "#111",{level:"AA",size:"large"}) => false
++tinycolor.isReadable = function(color1, color2, wcag2) {
++    var readability = tinycolor.readability(color1, color2);
++    var wcag2Parms, out;
++
++    out = false;
++
++    wcag2Parms = validateWCAG2Parms(wcag2);
++    switch (wcag2Parms.level + wcag2Parms.size) {
++        case "AAsmall":
++        case "AAAlarge":
++            out = readability >= 4.5;
++            break;
++        case "AAlarge":
++            out = readability >= 3;
++            break;
++        case "AAAsmall":
++            out = readability >= 7;
++            break;
+     }
+-    return cycle
+-  }
++    return out;
+ 
+-  function shouldGlue(pcycle, ncycle) {
+-    return (ncycle[1] === ncycle[ncycle.length-1])
+-  }
++};
+ 
+-  for(var i=0; i<numVertices; ++i) {
+-    for(var j=0; j<2; ++j) {
+-      var pcycle = []
+-      while(adj[j][i].length > 0) {
+-        var ni = adj[0][i].length
+-        var ncycle = extractCycle(i,j)
+-        if(shouldGlue(pcycle, ncycle)) {
+-          //Glue together trivial cycles
+-          pcycle.push.apply(pcycle, ncycle)
+-        } else {
+-          if(pcycle.length > 0) {
+-            cycles.push(pcycle)
+-          }
+-          pcycle = ncycle
++// `mostReadable`
++// Given a base color and a list of possible foreground or background
++// colors for that base, returns the most readable color.
++// Optionally returns Black or White if the most readable color is unreadable.
++// *Example*
++//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:false}).toHexString(); // "#112255"
++//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:true}).toHexString();  // "#ffffff"
++//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"large"}).toHexString(); // "#faf3f3"
++//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"small"}).toHexString(); // "#ffffff"
++tinycolor.mostReadable = function(baseColor, colorList, args) {
++    var bestColor = null;
++    var bestScore = 0;
++    var readability;
++    var includeFallbackColors, level, size ;
++    args = args || {};
++    includeFallbackColors = args.includeFallbackColors ;
++    level = args.level;
++    size = args.size;
++
++    for (var i= 0; i < colorList.length ; i++) {
++        readability = tinycolor.readability(baseColor, colorList[i]);
++        if (readability > bestScore) {
++            bestScore = readability;
++            bestColor = tinycolor(colorList[i]);
+         }
+-      }
+-      if(pcycle.length > 0) {
+-        cycles.push(pcycle)
+-      }
+     }
+-  }
+ 
+-  //Combine paths and loops together
+-  return cycles
+-}
+-},{"compare-angle":249}],249:[function(require,module,exports){
+-"use strict"
++    if (tinycolor.isReadable(baseColor, bestColor, {"level":level,"size":size}) || !includeFallbackColors) {
++        return bestColor;
++    }
++    else {
++        args.includeFallbackColors=false;
++        return tinycolor.mostReadable(baseColor,["#fff", "#000"],args);
++    }
++};
+ 
+-module.exports = compareAngle
+ 
+-var orient = require("robust-orientation")
+-var sgn = require("signum")
+-var twoSum = require("two-sum")
+-var robustProduct = require("robust-product")
+-var robustSum = require("robust-sum")
++// Big List of Colors
++// ------------------
++// <http://www.w3.org/TR/css3-color/#svg-color>
++var names = tinycolor.names = {
++    aliceblue: "f0f8ff",
++    antiquewhite: "faebd7",
++    aqua: "0ff",
++    aquamarine: "7fffd4",
++    azure: "f0ffff",
++    beige: "f5f5dc",
++    bisque: "ffe4c4",
++    black: "000",
++    blanchedalmond: "ffebcd",
++    blue: "00f",
++    blueviolet: "8a2be2",
++    brown: "a52a2a",
++    burlywood: "deb887",
++    burntsienna: "ea7e5d",
++    cadetblue: "5f9ea0",
++    chartreuse: "7fff00",
++    chocolate: "d2691e",
++    coral: "ff7f50",
++    cornflowerblue: "6495ed",
++    cornsilk: "fff8dc",
++    crimson: "dc143c",
++    cyan: "0ff",
++    darkblue: "00008b",
++    darkcyan: "008b8b",
++    darkgoldenrod: "b8860b",
++    darkgray: "a9a9a9",
++    darkgreen: "006400",
++    darkgrey: "a9a9a9",
++    darkkhaki: "bdb76b",
++    darkmagenta: "8b008b",
++    darkolivegreen: "556b2f",
++    darkorange: "ff8c00",
++    darkorchid: "9932cc",
++    darkred: "8b0000",
++    darksalmon: "e9967a",
++    darkseagreen: "8fbc8f",
++    darkslateblue: "483d8b",
++    darkslategray: "2f4f4f",
++    darkslategrey: "2f4f4f",
++    darkturquoise: "00ced1",
++    darkviolet: "9400d3",
++    deeppink: "ff1493",
++    deepskyblue: "00bfff",
++    dimgray: "696969",
++    dimgrey: "696969",
++    dodgerblue: "1e90ff",
++    firebrick: "b22222",
++    floralwhite: "fffaf0",
++    forestgreen: "228b22",
++    fuchsia: "f0f",
++    gainsboro: "dcdcdc",
++    ghostwhite: "f8f8ff",
++    gold: "ffd700",
++    goldenrod: "daa520",
++    gray: "808080",
++    green: "008000",
++    greenyellow: "adff2f",
++    grey: "808080",
++    honeydew: "f0fff0",
++    hotpink: "ff69b4",
++    indianred: "cd5c5c",
++    indigo: "4b0082",
++    ivory: "fffff0",
++    khaki: "f0e68c",
++    lavender: "e6e6fa",
++    lavenderblush: "fff0f5",
++    lawngreen: "7cfc00",
++    lemonchiffon: "fffacd",
++    lightblue: "add8e6",
++    lightcoral: "f08080",
++    lightcyan: "e0ffff",
++    lightgoldenrodyellow: "fafad2",
++    lightgray: "d3d3d3",
++    lightgreen: "90ee90",
++    lightgrey: "d3d3d3",
++    lightpink: "ffb6c1",
++    lightsalmon: "ffa07a",
++    lightseagreen: "20b2aa",
++    lightskyblue: "87cefa",
++    lightslategray: "789",
++    lightslategrey: "789",
++    lightsteelblue: "b0c4de",
++    lightyellow: "ffffe0",
++    lime: "0f0",
++    limegreen: "32cd32",
++    linen: "faf0e6",
++    magenta: "f0f",
++    maroon: "800000",
++    mediumaquamarine: "66cdaa",
++    mediumblue: "0000cd",
++    mediumorchid: "ba55d3",
++    mediumpurple: "9370db",
++    mediumseagreen: "3cb371",
++    mediumslateblue: "7b68ee",
++    mediumspringgreen: "00fa9a",
++    mediumturquoise: "48d1cc",
++    mediumvioletred: "c71585",
++    midnightblue: "191970",
++    mintcream: "f5fffa",
++    mistyrose: "ffe4e1",
++    moccasin: "ffe4b5",
++    navajowhite: "ffdead",
++    navy: "000080",
++    oldlace: "fdf5e6",
++    olive: "808000",
++    olivedrab: "6b8e23",
++    orange: "ffa500",
++    orangered: "ff4500",
++    orchid: "da70d6",
++    palegoldenrod: "eee8aa",
++    palegreen: "98fb98",
++    paleturquoise: "afeeee",
++    palevioletred: "db7093",
++    papayawhip: "ffefd5",
++    peachpuff: "ffdab9",
++    peru: "cd853f",
++    pink: "ffc0cb",
++    plum: "dda0dd",
++    powderblue: "b0e0e6",
++    purple: "800080",
++    rebeccapurple: "663399",
++    red: "f00",
++    rosybrown: "bc8f8f",
++    royalblue: "4169e1",
++    saddlebrown: "8b4513",
++    salmon: "fa8072",
++    sandybrown: "f4a460",
++    seagreen: "2e8b57",
++    seashell: "fff5ee",
++    sienna: "a0522d",
++    silver: "c0c0c0",
++    skyblue: "87ceeb",
++    slateblue: "6a5acd",
++    slategray: "708090",
++    slategrey: "708090",
++    snow: "fffafa",
++    springgreen: "00ff7f",
++    steelblue: "4682b4",
++    tan: "d2b48c",
++    teal: "008080",
++    thistle: "d8bfd8",
++    tomato: "ff6347",
++    turquoise: "40e0d0",
++    violet: "ee82ee",
++    wheat: "f5deb3",
++    white: "fff",
++    whitesmoke: "f5f5f5",
++    yellow: "ff0",
++    yellowgreen: "9acd32"
++};
+ 
+-function testInterior(a, b, c) {
+-  var x0 = twoSum(a[0], -b[0])
+-  var y0 = twoSum(a[1], -b[1])
+-  var x1 = twoSum(c[0], -b[0])
+-  var y1 = twoSum(c[1], -b[1])
++// Make it easy to access colors via `hexNames[hex]`
++var hexNames = tinycolor.hexNames = flip(names);
+ 
+-  var d = robustSum(
+-    robustProduct(x0, x1),
+-    robustProduct(y0, y1))
+ 
+-  return d[d.length-1] >= 0
+-}
++// Utilities
++// ---------
+ 
+-function compareAngle(a, b, c, d) {
+-  var bcd = orient(b, c, d)
+-  if(bcd === 0) {
+-    //Handle degenerate cases
+-    var sabc = sgn(orient(a, b, c))
+-    var sabd = sgn(orient(a, b, d))
+-    if(sabc === sabd) {
+-      if(sabc === 0) {
+-        var ic = testInterior(a, b, c)
+-        var id = testInterior(a, b, d)
+-        if(ic === id) {
+-          return 0
+-        } else if(ic) {
+-          return 1
+-        } else {
+-          return -1
++// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
++function flip(o) {
++    var flipped = { };
++    for (var i in o) {
++        if (o.hasOwnProperty(i)) {
++            flipped[o[i]] = i;
+         }
+-      }
+-      return 0
+-    } else if(sabd === 0) {
+-      if(sabc > 0) {
+-        return -1
+-      } else if(testInterior(a, b, d)) {
+-        return -1
+-      } else {
+-        return 1
+-      }
+-    } else if(sabc === 0) {
+-      if(sabd > 0) {
+-        return 1
+-      } else if(testInterior(a, b, c)) {
+-        return 1
+-      } else {
+-        return -1
+-      }
+-    }
+-    return sgn(sabd - sabc)
+-  }
+-  var abc = orient(a, b, c)
+-  if(abc > 0) {
+-    if(bcd > 0 && orient(a, b, d) > 0) {
+-      return 1
+-    }
+-    return -1
+-  } else if(abc < 0) {
+-    if(bcd > 0 || orient(a, b, d) > 0) {
+-      return 1
+     }
+-    return -1
+-  } else {
+-    var abd = orient(a, b, d)
+-    if(abd > 0) {
+-      return 1
+-    } else {
+-      if(testInterior(a, b, c)) {
+-        return 1
+-      } else {
+-        return -1
+-      }
++    return flipped;
++}
++
++// Return a valid alpha value [0,1] with all invalid values being set to 1
++function boundAlpha(a) {
++    a = parseFloat(a);
++
++    if (isNaN(a) || a < 0 || a > 1) {
++        a = 1;
+     }
+-  }
++
++    return a;
+ }
+-},{"robust-orientation":225,"robust-product":250,"robust-sum":228,"signum":251,"two-sum":241}],250:[function(require,module,exports){
+-"use strict"
+ 
+-var robustSum = require("robust-sum")
+-var robustScale = require("robust-scale")
++// Take input from [0, n] and return it as [0, 1]
++function bound01(n, max) {
++    if (isOnePointZero(n)) { n = "100%"; }
++
++    var processPercent = isPercentage(n);
++    n = mathMin(max, mathMax(0, parseFloat(n)));
+ 
+-module.exports = robustProduct
++    // Automatically convert percentage into number
++    if (processPercent) {
++        n = parseInt(n * max, 10) / 100;
++    }
+ 
+-function robustProduct(a, b) {
+-  if(a.length === 1) {
+-    return robustScale(b, a[0])
+-  }
+-  if(b.length === 1) {
+-    return robustScale(a, b[0])
+-  }
+-  if(a.length === 0 || b.length === 0) {
+-    return [0]
+-  }
+-  var r = [0]
+-  if(a.length < b.length) {
+-    for(var i=0; i<a.length; ++i) {
+-      r = robustSum(r, robustScale(b, a[i]))
++    // Handle floating point rounding errors
++    if ((Math.abs(n - max) < 0.000001)) {
++        return 1;
+     }
+-  } else {
+-    for(var i=0; i<b.length; ++i) {
+-      r = robustSum(r, robustScale(a, b[i]))
+-    }    
+-  }
+-  return r
++
++    // Convert into [0, 1] range if it isn't already
++    return (n % max) / parseFloat(max);
+ }
+-},{"robust-scale":226,"robust-sum":228}],251:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = function signum(x) {
+-  if(x < 0) { return -1 }
+-  if(x > 0) { return 1 }
+-  return 0.0
++// Force a number between 0 and 1
++function clamp01(val) {
++    return mathMin(1, mathMax(0, val));
+ }
+-},{}],252:[function(require,module,exports){
+-arguments[4][9][0].apply(exports,arguments)
+-},{"dup":9}],253:[function(require,module,exports){
+-"use strict"
+ 
+-var bounds = require("binary-search-bounds")
++// Parse a base-16 hex value into a base-10 integer
++function parseIntFromHex(val) {
++    return parseInt(val, 16);
++}
+ 
+-var NOT_FOUND = 0
+-var SUCCESS = 1
+-var EMPTY = 2
++// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
++// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
++function isOnePointZero(n) {
++    return typeof n == "string" && n.indexOf('.') != -1 && parseFloat(n) === 1;
++}
+ 
+-module.exports = createWrapper
++// Check to see if string passed in is a percentage
++function isPercentage(n) {
++    return typeof n === "string" && n.indexOf('%') != -1;
++}
+ 
+-function IntervalTreeNode(mid, left, right, leftPoints, rightPoints) {
+-  this.mid = mid
+-  this.left = left
+-  this.right = right
+-  this.leftPoints = leftPoints
+-  this.rightPoints = rightPoints
+-  this.count = (left ? left.count : 0) + (right ? right.count : 0) + leftPoints.length
++// Force a hex value to have 2 characters
++function pad2(c) {
++    return c.length == 1 ? '0' + c : '' + c;
+ }
+ 
+-var proto = IntervalTreeNode.prototype
++// Replace a decimal with it's percentage value
++function convertToPercentage(n) {
++    if (n <= 1) {
++        n = (n * 100) + "%";
++    }
+ 
+-function copy(a, b) {
+-  a.mid = b.mid
+-  a.left = b.left
+-  a.right = b.right
+-  a.leftPoints = b.leftPoints
+-  a.rightPoints = b.rightPoints
+-  a.count = b.count
++    return n;
+ }
+ 
+-function rebuild(node, intervals) {
+-  var ntree = createIntervalTree(intervals)
+-  node.mid = ntree.mid
+-  node.left = ntree.left
+-  node.right = ntree.right
+-  node.leftPoints = ntree.leftPoints
+-  node.rightPoints = ntree.rightPoints
+-  node.count = ntree.count
++// Converts a decimal to a hex value
++function convertDecimalToHex(d) {
++    return Math.round(parseFloat(d) * 255).toString(16);
+ }
+-
+-function rebuildWithInterval(node, interval) {
+-  var intervals = node.intervals([])
+-  intervals.push(interval)
+-  rebuild(node, intervals)    
++// Converts a hex value to a decimal
++function convertHexToDecimal(h) {
++    return (parseIntFromHex(h) / 255);
+ }
+ 
+-function rebuildWithoutInterval(node, interval) {
+-  var intervals = node.intervals([])
+-  var idx = intervals.indexOf(interval)
+-  if(idx < 0) {
+-    return NOT_FOUND
+-  }
+-  intervals.splice(idx, 1)
+-  rebuild(node, intervals)
+-  return SUCCESS
+-}
++var matchers = (function() {
+ 
+-proto.intervals = function(result) {
+-  result.push.apply(result, this.leftPoints)
+-  if(this.left) {
+-    this.left.intervals(result)
+-  }
+-  if(this.right) {
+-    this.right.intervals(result)
+-  }
+-  return result
++    // <http://www.w3.org/TR/css3-values/#integers>
++    var CSS_INTEGER = "[-\\+]?\\d+%?";
++
++    // <http://www.w3.org/TR/css3-values/#number-value>
++    var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";
++
++    // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
++    var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";
++
++    // Actual matching.
++    // Parentheses and commas are optional, but not required.
++    // Whitespace can take the place of commas or opening paren
++    var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
++    var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
++
++    return {
++        CSS_UNIT: new RegExp(CSS_UNIT),
++        rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
++        rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
++        hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
++        hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
++        hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
++        hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
++        hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
++        hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
++        hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
++        hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
++    };
++})();
++
++// `isValidCSSUnit`
++// Take in a single string / number and check to see if it looks like a CSS unit
++// (see `matchers` above for definition).
++function isValidCSSUnit(color) {
++    return !!matchers.CSS_UNIT.exec(color);
+ }
+ 
+-proto.insert = function(interval) {
+-  var weight = this.count - this.leftPoints.length
+-  this.count += 1
+-  if(interval[1] < this.mid) {
+-    if(this.left) {
+-      if(4*(this.left.count+1) > 3*(weight+1)) {
+-        rebuildWithInterval(this, interval)
+-      } else {
+-        this.left.insert(interval)
+-      }
+-    } else {
+-      this.left = createIntervalTree([interval])
++// `stringInputToObject`
++// Permissive string parsing.  Take in a number of formats, and output an object
++// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
++function stringInputToObject(color) {
++
++    color = color.replace(trimLeft,'').replace(trimRight, '').toLowerCase();
++    var named = false;
++    if (names[color]) {
++        color = names[color];
++        named = true;
+     }
+-  } else if(interval[0] > this.mid) {
+-    if(this.right) {
+-      if(4*(this.right.count+1) > 3*(weight+1)) {
+-        rebuildWithInterval(this, interval)
+-      } else {
+-        this.right.insert(interval)
+-      }
+-    } else {
+-      this.right = createIntervalTree([interval])
++    else if (color == 'transparent') {
++        return { r: 0, g: 0, b: 0, a: 0, format: "name" };
+     }
+-  } else {
+-    var l = bounds.ge(this.leftPoints, interval, compareBegin)
+-    var r = bounds.ge(this.rightPoints, interval, compareEnd)
+-    this.leftPoints.splice(l, 0, interval)
+-    this.rightPoints.splice(r, 0, interval)
+-  }
+-}
+ 
+-proto.remove = function(interval) {
+-  var weight = this.count - this.leftPoints
+-  if(interval[1] < this.mid) {
+-    if(!this.left) {
+-      return NOT_FOUND
++    // Try to match string input using regular expressions.
++    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
++    // Just return an object and let the conversion functions handle that.
++    // This way the result will be the same whether the tinycolor is initialized with string or object.
++    var match;
++    if ((match = matchers.rgb.exec(color))) {
++        return { r: match[1], g: match[2], b: match[3] };
+     }
+-    var rw = this.right ? this.right.count : 0
+-    if(4 * rw > 3 * (weight-1)) {
+-      return rebuildWithoutInterval(this, interval)
++    if ((match = matchers.rgba.exec(color))) {
++        return { r: match[1], g: match[2], b: match[3], a: match[4] };
+     }
+-    var r = this.left.remove(interval)
+-    if(r === EMPTY) {
+-      this.left = null
+-      this.count -= 1
+-      return SUCCESS
+-    } else if(r === SUCCESS) {
+-      this.count -= 1
++    if ((match = matchers.hsl.exec(color))) {
++        return { h: match[1], s: match[2], l: match[3] };
+     }
+-    return r
+-  } else if(interval[0] > this.mid) {
+-    if(!this.right) {
+-      return NOT_FOUND
++    if ((match = matchers.hsla.exec(color))) {
++        return { h: match[1], s: match[2], l: match[3], a: match[4] };
+     }
+-    var lw = this.left ? this.left.count : 0
+-    if(4 * lw > 3 * (weight-1)) {
+-      return rebuildWithoutInterval(this, interval)
++    if ((match = matchers.hsv.exec(color))) {
++        return { h: match[1], s: match[2], v: match[3] };
+     }
+-    var r = this.right.remove(interval)
+-    if(r === EMPTY) {
+-      this.right = null
+-      this.count -= 1
+-      return SUCCESS
+-    } else if(r === SUCCESS) {
+-      this.count -= 1
++    if ((match = matchers.hsva.exec(color))) {
++        return { h: match[1], s: match[2], v: match[3], a: match[4] };
+     }
+-    return r
+-  } else {
+-    if(this.count === 1) {
+-      if(this.leftPoints[0] === interval) {
+-        return EMPTY
+-      } else {
+-        return NOT_FOUND
+-      }
++    if ((match = matchers.hex8.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1]),
++            g: parseIntFromHex(match[2]),
++            b: parseIntFromHex(match[3]),
++            a: convertHexToDecimal(match[4]),
++            format: named ? "name" : "hex8"
++        };
+     }
+-    if(this.leftPoints.length === 1 && this.leftPoints[0] === interval) {
+-      if(this.left && this.right) {
+-        var p = this
+-        var n = this.left
+-        while(n.right) {
+-          p = n
+-          n = n.right
+-        }
+-        if(p === this) {
+-          n.right = this.right
+-        } else {
+-          var l = this.left
+-          var r = this.right
+-          p.count -= n.count
+-          p.right = n.left
+-          n.left = l
+-          n.right = r
+-        }
+-        copy(this, n)
+-        this.count = (this.left?this.left.count:0) + (this.right?this.right.count:0) + this.leftPoints.length
+-      } else if(this.left) {
+-        copy(this, this.left)
+-      } else {
+-        copy(this, this.right)
+-      }
+-      return SUCCESS
++    if ((match = matchers.hex6.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1]),
++            g: parseIntFromHex(match[2]),
++            b: parseIntFromHex(match[3]),
++            format: named ? "name" : "hex"
++        };
+     }
+-    for(var l = bounds.ge(this.leftPoints, interval, compareBegin); l<this.leftPoints.length; ++l) {
+-      if(this.leftPoints[l][0] !== interval[0]) {
+-        break
+-      }
+-      if(this.leftPoints[l] === interval) {
+-        this.count -= 1
+-        this.leftPoints.splice(l, 1)
+-        for(var r = bounds.ge(this.rightPoints, interval, compareEnd); r<this.rightPoints.length; ++r) {
+-          if(this.rightPoints[r][1] !== interval[1]) {
+-            break
+-          } else if(this.rightPoints[r] === interval) {
+-            this.rightPoints.splice(r, 1)
+-            return SUCCESS
+-          }
+-        }
+-      }
++    if ((match = matchers.hex4.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1] + '' + match[1]),
++            g: parseIntFromHex(match[2] + '' + match[2]),
++            b: parseIntFromHex(match[3] + '' + match[3]),
++            a: convertHexToDecimal(match[4] + '' + match[4]),
++            format: named ? "name" : "hex8"
++        };
++    }
++    if ((match = matchers.hex3.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1] + '' + match[1]),
++            g: parseIntFromHex(match[2] + '' + match[2]),
++            b: parseIntFromHex(match[3] + '' + match[3]),
++            format: named ? "name" : "hex"
++        };
+     }
+-    return NOT_FOUND
+-  }
+-}
+-
+-function reportLeftRange(arr, hi, cb) {
+-  for(var i=0; i<arr.length && arr[i][0] <= hi; ++i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
+-  }
+-}
+-
+-function reportRightRange(arr, lo, cb) {
+-  for(var i=arr.length-1; i>=0 && arr[i][1] >= lo; --i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
+-  }
+-}
+ 
+-function reportRange(arr, cb) {
+-  for(var i=0; i<arr.length; ++i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
+-  }
++    return false;
+ }
+ 
+-proto.queryPoint = function(x, cb) {
+-  if(x < this.mid) {
+-    if(this.left) {
+-      var r = this.left.queryPoint(x, cb)
+-      if(r) { return r }
++function validateWCAG2Parms(parms) {
++    // return valid WCAG2 parms for isReadable.
++    // If input parms are invalid, return {"level":"AA", "size":"small"}
++    var level, size;
++    parms = parms || {"level":"AA", "size":"small"};
++    level = (parms.level || "AA").toUpperCase();
++    size = (parms.size || "small").toLowerCase();
++    if (level !== "AA" && level !== "AAA") {
++        level = "AA";
+     }
+-    return reportLeftRange(this.leftPoints, x, cb)
+-  } else if(x > this.mid) {
+-    if(this.right) {
+-      var r = this.right.queryPoint(x, cb)
+-      if(r) { return r }
++    if (size !== "small" && size !== "large") {
++        size = "small";
+     }
+-    return reportRightRange(this.rightPoints, x, cb)
+-  } else {
+-    return reportRange(this.leftPoints, cb)
+-  }
++    return {"level":level, "size":size};
+ }
+ 
+-proto.queryInterval = function(lo, hi, cb) {
+-  if(lo < this.mid && this.left) {
+-    var r = this.left.queryInterval(lo, hi, cb)
+-    if(r) { return r }
+-  }
+-  if(hi > this.mid && this.right) {
+-    var r = this.right.queryInterval(lo, hi, cb)
+-    if(r) { return r }
+-  }
+-  if(hi < this.mid) {
+-    return reportLeftRange(this.leftPoints, hi, cb)
+-  } else if(lo > this.mid) {
+-    return reportRightRange(this.rightPoints, lo, cb)
+-  } else {
+-    return reportRange(this.leftPoints, cb)
+-  }
++// Node: Export function
++if (typeof module !== "undefined" && module.exports) {
++    module.exports = tinycolor;
+ }
+-
+-function compareNumbers(a, b) {
+-  return a - b
++// AMD/requirejs: Define the module
++else if (typeof define === 'function' && define.amd) {
++    define(function () {return tinycolor;});
++}
++// Browser: Expose to window
++else {
++    window.tinycolor = tinycolor;
+ }
+ 
+-function compareBegin(a, b) {
+-  var d = a[0] - b[0]
+-  if(d) { return d }
+-  return a[1] - b[1]
++})(Math);
++
++},{}],241:[function(require,module,exports){
++'use strict'
++
++var parseUnit = require('parse-unit')
++
++module.exports = toPX
++
++var PIXELS_PER_INCH = 96
++
++function getPropertyInPX(element, prop) {
++  var parts = parseUnit(getComputedStyle(element).getPropertyValue(prop))
++  return parts[0] * toPX(parts[1], element)
+ }
+ 
+-function compareEnd(a, b) {
+-  var d = a[1] - b[1]
+-  if(d) { return d }
+-  return a[0] - b[0]
++//This brutal hack is needed
++function getSizeBrutal(unit, element) {
++  var testDIV = document.createElement('div')
++  testDIV.style['font-size'] = '128' + unit
++  element.appendChild(testDIV)
++  var size = getPropertyInPX(testDIV, 'font-size') / 128
++  element.removeChild(testDIV)
++  return size
+ }
+ 
+-function createIntervalTree(intervals) {
+-  if(intervals.length === 0) {
+-    return null
++function toPX(str, element) {
++  element = element || document.body
++  str = (str || 'px').trim().toLowerCase()
++  if(element === window || element === document) {
++    element = document.body 
+   }
+-  var pts = []
+-  for(var i=0; i<intervals.length; ++i) {
+-    pts.push(intervals[i][0], intervals[i][1])
++  switch(str) {
++    case '%':  //Ambiguous, not sure if we should use width or height
++      return element.clientHeight / 100.0
++    case 'ch':
++    case 'ex':
++      return getSizeBrutal(str, element)
++    case 'em':
++      return getPropertyInPX(element, 'font-size')
++    case 'rem':
++      return getPropertyInPX(document.body, 'font-size')
++    case 'vw':
++      return window.innerWidth/100
++    case 'vh':
++      return window.innerHeight/100
++    case 'vmin':
++      return Math.min(window.innerWidth, window.innerHeight) / 100
++    case 'vmax':
++      return Math.max(window.innerWidth, window.innerHeight) / 100
++    case 'in':
++      return PIXELS_PER_INCH
++    case 'cm':
++      return PIXELS_PER_INCH / 2.54
++    case 'mm':
++      return PIXELS_PER_INCH / 25.4
++    case 'pt':
++      return PIXELS_PER_INCH / 72
++    case 'pc':
++      return PIXELS_PER_INCH / 6
+   }
+-  pts.sort(compareNumbers)
+-
+-  var mid = pts[pts.length>>1]
++  return 1
++}
++},{"parse-unit":197}],242:[function(require,module,exports){
++"use strict"
+ 
+-  var leftIntervals = []
+-  var rightIntervals = []
+-  var centerIntervals = []
+-  for(var i=0; i<intervals.length; ++i) {
+-    var s = intervals[i]
+-    if(s[1] < mid) {
+-      leftIntervals.push(s)
+-    } else if(mid < s[0]) {
+-      rightIntervals.push(s)
+-    } else {
+-      centerIntervals.push(s)
+-    }
+-  }
++module.exports = triangulateCube
+ 
+-  //Split center intervals
+-  var leftPoints = centerIntervals
+-  var rightPoints = centerIntervals.slice()
+-  leftPoints.sort(compareBegin)
+-  rightPoints.sort(compareEnd)
++var perm = require("permutation-rank")
++var sgn = require("permutation-parity")
++var gamma = require("gamma")
+ 
+-  return new IntervalTreeNode(mid, 
+-    createIntervalTree(leftIntervals),
+-    createIntervalTree(rightIntervals),
+-    leftPoints,
+-    rightPoints)
++function triangulateCube(dimension) {
++  if(dimension < 0) {
++    return [ ]
++  }
++  if(dimension === 0) {
++    return [ [0] ]
++  }
++  var dfactorial = Math.round(gamma(dimension+1))|0
++  var result = []
++  for(var i=0; i<dfactorial; ++i) {
++    var p = perm.unrank(dimension, i)
++    var cell = [ 0 ]
++    var v = 0
++    for(var j=0; j<p.length; ++j) {
++      v += (1<<p[j])
++      cell.push(v)
++    }
++    if(sgn(p) < 1) {
++      cell[0] = v
++      cell[dimension] = 0
++    }
++    result.push(cell)
++  }
++  return result
+ }
++},{"gamma":85,"permutation-parity":198,"permutation-rank":199}],243:[function(require,module,exports){
++'use strict'
+ 
+-//User friendly wrapper that makes it possible to support empty trees
+-function IntervalTree(root) {
+-  this.root = root
+-}
++module.exports = createTurntableController
+ 
+-var tproto = IntervalTree.prototype
++var filterVector = require('filtered-vector')
++var invert44     = require('gl-mat4/invert')
++var rotateM      = require('gl-mat4/rotate')
++var cross        = require('gl-vec3/cross')
++var normalize3   = require('gl-vec3/normalize')
++var dot3         = require('gl-vec3/dot')
+ 
+-tproto.insert = function(interval) {
+-  if(this.root) {
+-    this.root.insert(interval)
+-  } else {
+-    this.root = new IntervalTreeNode(interval[0], null, null, [interval], [interval])
+-  }
++function len3(x, y, z) {
++  return Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2) + Math.pow(z, 2))
+ }
+ 
+-tproto.remove = function(interval) {
+-  if(this.root) {
+-    var r = this.root.remove(interval)
+-    if(r === EMPTY) {
+-      this.root = null
+-    }
+-    return r !== NOT_FOUND
+-  }
+-  return false
++function clamp1(x) {
++  return Math.min(1.0, Math.max(-1.0, x))
+ }
+ 
+-tproto.queryPoint = function(p, cb) {
+-  if(this.root) {
+-    return this.root.queryPoint(p, cb)
++function findOrthoPair(v) {
++  var vx = Math.abs(v[0])
++  var vy = Math.abs(v[1])
++  var vz = Math.abs(v[2])
++
++  var u = [0,0,0]
++  if(vx > Math.max(vy, vz)) {
++    u[2] = 1
++  } else if(vy > Math.max(vx, vz)) {
++    u[0] = 1
++  } else {
++    u[1] = 1
+   }
+-}
+ 
+-tproto.queryInterval = function(lo, hi, cb) {
+-  if(lo <= hi && this.root) {
+-    return this.root.queryInterval(lo, hi, cb)
++  var vv = 0
++  var uv = 0
++  for(var i=0; i<3; ++i ) {
++    vv += v[i] * v[i]
++    uv += u[i] * v[i]
++  }
++  for(var i=0; i<3; ++i) {
++    u[i] -= (uv / vv) *  v[i]
+   }
++  normalize3(u, u)
++  return u
+ }
+ 
+-Object.defineProperty(tproto, "count", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root.count
+-    }
+-    return 0
+-  }
+-})
++function TurntableController(zoomMin, zoomMax, center, up, right, radius, theta, phi) {
++  this.center = filterVector(center)
++  this.up     = filterVector(up)
++  this.right  = filterVector(right)
++  this.radius = filterVector([radius])
++  this.angle  = filterVector([theta, phi])
++  this.angle.bounds = [[-Infinity,-Math.PI/2], [Infinity,Math.PI/2]]
++  this.setDistanceLimits(zoomMin, zoomMax)
+ 
+-Object.defineProperty(tproto, "intervals", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root.intervals([])
+-    }
+-    return []
++  this.computedCenter = this.center.curve(0)
++  this.computedUp     = this.up.curve(0)
++  this.computedRight  = this.right.curve(0)
++  this.computedRadius = this.radius.curve(0)
++  this.computedAngle  = this.angle.curve(0)
++  this.computedToward = [0,0,0]
++  this.computedEye    = [0,0,0]
++  this.computedMatrix = new Array(16)
++  for(var i=0; i<16; ++i) {
++    this.computedMatrix[i] = 0.5
+   }
+-})
+ 
+-function createWrapper(intervals) {
+-  if(!intervals || intervals.length === 0) {
+-    return new IntervalTree(null)
+-  }
+-  return new IntervalTree(createIntervalTree(intervals))
++  this.recalcMatrix(0)
+ }
+ 
+-},{"binary-search-bounds":252}],254:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = orderSegments
+-
+-var orient = require("robust-orientation")
++var proto = TurntableController.prototype
+ 
+-function horizontalOrder(a, b) {
+-  var bl, br
+-  if(b[0][0] < b[1][0]) {
+-    bl = b[0]
+-    br = b[1]
+-  } else if(b[0][0] > b[1][0]) {
+-    bl = b[1]
+-    br = b[0]
++proto.setDistanceLimits = function(minDist, maxDist) {
++  if(minDist > 0) {
++    minDist = Math.log(minDist)
+   } else {
+-    var alo = Math.min(a[0][1], a[1][1])
+-    var ahi = Math.max(a[0][1], a[1][1])
+-    var blo = Math.min(b[0][1], b[1][1])
+-    var bhi = Math.max(b[0][1], b[1][1])
+-    if(ahi < blo) {
+-      return ahi - blo
+-    }
+-    if(alo > bhi) {
+-      return alo - bhi
+-    }
+-    return ahi - bhi
++    minDist = -Infinity
+   }
+-  var al, ar
+-  if(a[0][1] < a[1][1]) {
+-    al = a[0]
+-    ar = a[1]
++  if(maxDist > 0) {
++    maxDist = Math.log(maxDist)
+   } else {
+-    al = a[1]
+-    ar = a[0]
+-  }
+-  var d = orient(br, bl, al)
+-  if(d) {
+-    return d
+-  }
+-  d = orient(br, bl, ar)
+-  if(d) {
+-    return d
++    maxDist = Infinity
+   }
+-  return ar - br
++  maxDist = Math.max(maxDist, minDist)
++  this.radius.bounds[0][0] = minDist
++  this.radius.bounds[1][0] = maxDist
+ }
+ 
+-function orderSegments(b, a) {
+-  var al, ar
+-  if(a[0][0] < a[1][0]) {
+-    al = a[0]
+-    ar = a[1]
+-  } else if(a[0][0] > a[1][0]) {
+-    al = a[1]
+-    ar = a[0]
+-  } else {
+-    return horizontalOrder(a, b)
+-  }
+-  var bl, br
+-  if(b[0][0] < b[1][0]) {
+-    bl = b[0]
+-    br = b[1]
+-  } else if(b[0][0] > b[1][0]) {
+-    bl = b[1]
+-    br = b[0]
+-  } else {
+-    return -horizontalOrder(b, a)
+-  }
+-  var d1 = orient(al, ar, br)
+-  var d2 = orient(al, ar, bl)
+-  if(d1 < 0) {
+-    if(d2 <= 0) {
+-      return d1
+-    }
+-  } else if(d1 > 0) {
+-    if(d2 >= 0) {
+-      return d1
+-    }
+-  } else if(d2) {
+-    return d2
+-  }
+-  d1 = orient(br, bl, ar)
+-  d2 = orient(br, bl, al)
+-  if(d1 < 0) {
+-    if(d2 <= 0) {
+-      return d1
+-    }
+-  } else if(d1 > 0) {
+-    if(d2 >= 0) {
+-      return d1
+-    }
+-  } else if(d2) {
+-    return d2
++proto.getDistanceLimits = function(out) {
++  var bounds = this.radius.bounds[0]
++  if(out) {
++    out[0] = Math.exp(bounds[0][0])
++    out[1] = Math.exp(bounds[1][0])
++    return out
+   }
+-  return ar[0] - br[0]
++  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
+ }
+-},{"robust-orientation":225}],255:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = createRBTree
++proto.recalcMatrix = function(t) {
++  //Recompute curves
++  this.center.curve(t)
++  this.up.curve(t)
++  this.right.curve(t)
++  this.radius.curve(t)
++  this.angle.curve(t)
+ 
+-var RED   = 0
+-var BLACK = 1
++  //Compute frame for camera matrix
++  var up     = this.computedUp
++  var right  = this.computedRight
++  var uu = 0.0
++  var ur = 0.0
++  for(var i=0; i<3; ++i) {
++    ur += up[i] * right[i]
++    uu += up[i] * up[i]
++  }
++  var ul = Math.sqrt(uu)
++  var rr = 0.0
++  for(var i=0; i<3; ++i) {
++    right[i] -= up[i] * ur / uu
++    rr       += right[i] * right[i]
++    up[i]    /= ul
++  }
++  var rl = Math.sqrt(rr)
++  for(var i=0; i<3; ++i) {
++    right[i] /= rl
++  }
+ 
+-function RBNode(color, key, value, left, right, count) {
+-  this._color = color
+-  this.key = key
+-  this.value = value
+-  this.left = left
+-  this.right = right
+-  this._count = count
+-}
++  //Compute toward vector
++  var toward = this.computedToward
++  cross(toward, up, right)
++  normalize3(toward, toward)
+ 
+-function cloneNode(node) {
+-  return new RBNode(node._color, node.key, node.value, node.left, node.right, node._count)
+-}
++  //Compute angular parameters
++  var radius = Math.exp(this.computedRadius[0])
++  var theta  = this.computedAngle[0]
++  var phi    = this.computedAngle[1]
+ 
+-function repaint(color, node) {
+-  return new RBNode(color, node.key, node.value, node.left, node.right, node._count)
+-}
++  var ctheta = Math.cos(theta)
++  var stheta = Math.sin(theta)
++  var cphi   = Math.cos(phi)
++  var sphi   = Math.sin(phi)
+ 
+-function recount(node) {
+-  node._count = 1 + (node.left ? node.left._count : 0) + (node.right ? node.right._count : 0)
+-}
++  var center = this.computedCenter
+ 
+-function RedBlackTree(compare, root) {
+-  this._compare = compare
+-  this.root = root
+-}
++  var wx = ctheta * cphi 
++  var wy = stheta * cphi
++  var wz = sphi
+ 
+-var proto = RedBlackTree.prototype
++  var sx = -ctheta * sphi
++  var sy = -stheta * sphi
++  var sz = cphi
+ 
+-Object.defineProperty(proto, "keys", {
+-  get: function() {
+-    var result = []
+-    this.forEach(function(k,v) {
+-      result.push(k)
+-    })
+-    return result
++  var eye = this.computedEye
++  var mat = this.computedMatrix
++  for(var i=0; i<3; ++i) {
++    var x      = wx * right[i] + wy * toward[i] + wz * up[i]
++    mat[4*i+1] = sx * right[i] + sy * toward[i] + sz * up[i]
++    mat[4*i+2] = x
++    mat[4*i+3] = 0.0
+   }
+-})
+ 
+-Object.defineProperty(proto, "values", {
+-  get: function() {
+-    var result = []
+-    this.forEach(function(k,v) {
+-      result.push(v)
+-    })
+-    return result
+-  }
+-})
++  var ax = mat[1]
++  var ay = mat[5]
++  var az = mat[9]
++  var bx = mat[2]
++  var by = mat[6]
++  var bz = mat[10]
++  var cx = ay * bz - az * by
++  var cy = az * bx - ax * bz
++  var cz = ax * by - ay * bx
++  var cl = len3(cx, cy, cz)
++  cx /= cl
++  cy /= cl
++  cz /= cl
++  mat[0] = cx
++  mat[4] = cy
++  mat[8] = cz
+ 
+-//Returns the number of nodes in the tree
+-Object.defineProperty(proto, "length", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root._count
+-    }
+-    return 0
++  for(var i=0; i<3; ++i) {
++    eye[i] = center[i] + mat[2+4*i]*radius
+   }
+-})
+ 
+-//Insert a new item into the tree
+-proto.insert = function(key, value) {
+-  var cmp = this._compare
+-  //Find point to insert new node at
+-  var n = this.root
+-  var n_stack = []
+-  var d_stack = []
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    n_stack.push(n)
+-    d_stack.push(d)
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++  for(var i=0; i<3; ++i) {
++    var rr = 0.0
++    for(var j=0; j<3; ++j) {
++      rr += mat[i+4*j] * eye[j]
+     }
++    mat[12+i] = -rr
+   }
+-  //Rebuild path to leaf node
+-  n_stack.push(new RBNode(RED, key, value, null, null, 1))
+-  for(var s=n_stack.length-2; s>=0; --s) {
+-    var n = n_stack[s]
+-    if(d_stack[s] <= 0) {
+-      n_stack[s] = new RBNode(n._color, n.key, n.value, n_stack[s+1], n.right, n._count+1)
+-    } else {
+-      n_stack[s] = new RBNode(n._color, n.key, n.value, n.left, n_stack[s+1], n._count+1)
++  mat[15] = 1.0
++}
++
++proto.getMatrix = function(t, result) {
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
++  if(result) {
++    for(var i=0; i<16; ++i) {
++      result[i] = mat[i]
+     }
++    return result
+   }
+-  //Rebalance tree using rotations
+-  //console.log("start insert", key, d_stack)
+-  for(var s=n_stack.length-1; s>1; --s) {
+-    var p = n_stack[s-1]
+-    var n = n_stack[s]
+-    if(p._color === BLACK || n._color === BLACK) {
+-      break
+-    }
+-    var pp = n_stack[s-2]
+-    if(pp.left === p) {
+-      if(p.left === n) {
+-        var y = pp.right
+-        if(y && y._color === RED) {
+-          //console.log("LLr")
+-          p._color = BLACK
+-          pp.right = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("LLb")
+-          pp._color = RED
+-          pp.left = p.right
+-          p._color = BLACK
+-          p.right = pp
+-          n_stack[s-2] = p
+-          n_stack[s-1] = n
+-          recount(pp)
+-          recount(p)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.left === pp) {
+-              ppp.left = p
+-            } else {
+-              ppp.right = p
+-            }
+-          }
+-          break
+-        }
+-      } else {
+-        var y = pp.right
+-        if(y && y._color === RED) {
+-          //console.log("LRr")
+-          p._color = BLACK
+-          pp.right = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("LRb")
+-          p.right = n.left
+-          pp._color = RED
+-          pp.left = n.right
+-          n._color = BLACK
+-          n.left = p
+-          n.right = pp
+-          n_stack[s-2] = n
+-          n_stack[s-1] = p
+-          recount(pp)
+-          recount(p)
+-          recount(n)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.left === pp) {
+-              ppp.left = n
+-            } else {
+-              ppp.right = n
+-            }
+-          }
+-          break
+-        }
+-      }
+-    } else {
+-      if(p.right === n) {
+-        var y = pp.left
+-        if(y && y._color === RED) {
+-          //console.log("RRr", y.key)
+-          p._color = BLACK
+-          pp.left = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("RRb")
+-          pp._color = RED
+-          pp.right = p.left
+-          p._color = BLACK
+-          p.left = pp
+-          n_stack[s-2] = p
+-          n_stack[s-1] = n
+-          recount(pp)
+-          recount(p)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.right === pp) {
+-              ppp.right = p
+-            } else {
+-              ppp.left = p
+-            }
+-          }
+-          break
+-        }
+-      } else {
+-        var y = pp.left
+-        if(y && y._color === RED) {
+-          //console.log("RLr")
+-          p._color = BLACK
+-          pp.left = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("RLb")
+-          p.left = n.right
+-          pp._color = RED
+-          pp.right = n.left
+-          n._color = BLACK
+-          n.right = p
+-          n.left = pp
+-          n_stack[s-2] = n
+-          n_stack[s-1] = p
+-          recount(pp)
+-          recount(p)
+-          recount(n)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.right === pp) {
+-              ppp.right = n
+-            } else {
+-              ppp.left = n
+-            }
+-          }
+-          break
+-        }
+-      }
++  return mat
++}
++
++var zAxis = [0,0,0]
++proto.rotate = function(t, dtheta, dphi, droll) {
++  this.angle.move(t, dtheta, dphi)
++  if(droll) {
++    this.recalcMatrix(t)
++
++    var mat = this.computedMatrix
++    zAxis[0] = mat[2]
++    zAxis[1] = mat[6]
++    zAxis[2] = mat[10]
++
++    var up     = this.computedUp
++    var right  = this.computedRight
++    var toward = this.computedToward
++
++    for(var i=0; i<3; ++i) {
++      mat[4*i]   = up[i]
++      mat[4*i+1] = right[i]
++      mat[4*i+2] = toward[i]
++    }
++    rotateM(mat, mat, droll, zAxis)
++    for(var i=0; i<3; ++i) {
++      up[i] =    mat[4*i]
++      right[i] = mat[4*i+1]
+     }
++
++    this.up.set(t, up[0], up[1], up[2])
++    this.right.set(t, right[0], right[1], right[2])
+   }
+-  //Return new tree
+-  n_stack[0]._color = BLACK
+-  return new RedBlackTree(cmp, n_stack[0])
+ }
+ 
++proto.pan = function(t, dx, dy, dz) {
++  dx = dx || 0.0
++  dy = dy || 0.0
++  dz = dz || 0.0
+ 
+-//Visit all nodes inorder
+-function doVisitFull(visit, node) {
+-  if(node.left) {
+-    var v = doVisitFull(visit, node.left)
+-    if(v) { return v }
+-  }
+-  var v = visit(node.key, node.value)
+-  if(v) { return v }
+-  if(node.right) {
+-    return doVisitFull(visit, node.right)
+-  }
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
++
++  var dist = Math.exp(this.computedRadius[0])
++
++  var ux = mat[1]
++  var uy = mat[5]
++  var uz = mat[9]
++  var ul = len3(ux, uy, uz)
++  ux /= ul
++  uy /= ul
++  uz /= ul
++
++  var rx = mat[0]
++  var ry = mat[4]
++  var rz = mat[8]
++  var ru = rx * ux + ry * uy + rz * uz
++  rx -= ux * ru
++  ry -= uy * ru
++  rz -= uz * ru
++  var rl = len3(rx, ry, rz)
++  rx /= rl
++  ry /= rl
++  rz /= rl
++
++  var vx = rx * dx + ux * dy
++  var vy = ry * dx + uy * dy
++  var vz = rz * dx + uz * dy
++  this.center.move(t, vx, vy, vz)
++
++  //Update z-component of radius
++  var radius = Math.exp(this.computedRadius[0])
++  radius = Math.max(1e-4, radius + dz)
++  this.radius.set(t, Math.log(radius))
+ }
+ 
+-//Visit half nodes in order
+-function doVisitHalf(lo, compare, visit, node) {
+-  var l = compare(lo, node.key)
+-  if(l <= 0) {
+-    if(node.left) {
+-      var v = doVisitHalf(lo, compare, visit, node.left)
+-      if(v) { return v }
+-    }
+-    var v = visit(node.key, node.value)
+-    if(v) { return v }
++proto.translate = function(t, dx, dy, dz) {
++  this.center.move(t,
++    dx||0.0,
++    dy||0.0,
++    dz||0.0)
++}
++
++//Recenters the coordinate axes
++proto.setMatrix = function(t, mat, axes, noSnap) {
++  
++  //Get the axes for tare
++  var ushift = 1
++  if(typeof axes === 'number') {
++    ushift = (axes)|0
++  } 
++  if(ushift < 0 || ushift > 3) {
++    ushift = 1
+   }
+-  if(node.right) {
+-    return doVisitHalf(lo, compare, visit, node.right)
++  var vshift = (ushift + 2) % 3
++  var fshift = (ushift + 1) % 3
++
++  //Recompute state for new t value
++  if(!mat) { 
++    this.recalcMatrix(t)
++    mat = this.computedMatrix
+   }
+-}
+ 
+-//Visit all nodes within a range
+-function doVisit(lo, hi, compare, visit, node) {
+-  var l = compare(lo, node.key)
+-  var h = compare(hi, node.key)
+-  var v
+-  if(l <= 0) {
+-    if(node.left) {
+-      v = doVisit(lo, hi, compare, visit, node.left)
+-      if(v) { return v }
+-    }
+-    if(h > 0) {
+-      v = visit(node.key, node.value)
+-      if(v) { return v }
++  //Get right and up vectors
++  var ux = mat[ushift]
++  var uy = mat[ushift+4]
++  var uz = mat[ushift+8]
++  if(!noSnap) {
++    var ul = len3(ux, uy, uz)
++    ux /= ul
++    uy /= ul
++    uz /= ul
++  } else {
++    var ax = Math.abs(ux)
++    var ay = Math.abs(uy)
++    var az = Math.abs(uz)
++    var am = Math.max(ax,ay,az)
++    if(ax === am) {
++      ux = (ux < 0) ? -1 : 1
++      uy = uz = 0
++    } else if(az === am) {
++      uz = (uz < 0) ? -1 : 1
++      ux = uy = 0
++    } else {
++      uy = (uy < 0) ? -1 : 1
++      ux = uz = 0
+     }
+   }
+-  if(h > 0 && node.right) {
+-    return doVisit(lo, hi, compare, visit, node.right)
++
++  var rx = mat[vshift]
++  var ry = mat[vshift+4]
++  var rz = mat[vshift+8]
++  var ru = rx * ux + ry * uy + rz * uz
++  rx -= ux * ru
++  ry -= uy * ru
++  rz -= uz * ru
++  var rl = len3(rx, ry, rz)
++  rx /= rl
++  ry /= rl
++  rz /= rl
++  
++  var fx = uy * rz - uz * ry
++  var fy = uz * rx - ux * rz
++  var fz = ux * ry - uy * rx
++  var fl = len3(fx, fy, fz)
++  fx /= fl
++  fy /= fl
++  fz /= fl
++
++  this.center.jump(t, ex, ey, ez)
++  this.radius.idle(t)
++  this.up.jump(t, ux, uy, uz)
++  this.right.jump(t, rx, ry, rz)
++
++  var phi, theta
++  if(ushift === 2) {
++    var cx = mat[1]
++    var cy = mat[5]
++    var cz = mat[9]
++    var cr = cx * rx + cy * ry + cz * rz
++    var cf = cx * fx + cy * fy + cz * fz
++    if(tu < 0) {
++      phi = -Math.PI/2
++    } else {
++      phi = Math.PI/2
++    }
++    theta = Math.atan2(cf, cr)
++  } else {
++    var tx = mat[2]
++    var ty = mat[6]
++    var tz = mat[10]
++    var tu = tx * ux + ty * uy + tz * uz
++    var tr = tx * rx + ty * ry + tz * rz
++    var tf = tx * fx + ty * fy + tz * fz
++
++    phi = Math.asin(clamp1(tu))
++    theta = Math.atan2(tf, tr)
+   }
++
++  this.angle.jump(t, theta, phi)
++
++  this.recalcMatrix(t)
++  var dx = mat[2]
++  var dy = mat[6]
++  var dz = mat[10]
++
++  var imat = this.computedMatrix
++  invert44(imat, mat)
++  var w  = imat[15]
++  var ex = imat[12] / w
++  var ey = imat[13] / w
++  var ez = imat[14] / w
++
++  var gs = Math.exp(this.computedRadius[0])
++  this.center.jump(t, ex-dx*gs, ey-dy*gs, ez-dz*gs)
+ }
+ 
++proto.lastT = function() {
++  return Math.max(
++    this.center.lastT(),
++    this.up.lastT(),
++    this.right.lastT(),
++    this.radius.lastT(),
++    this.angle.lastT())
++}
+ 
+-proto.forEach = function rbTreeForEach(visit, lo, hi) {
+-  if(!this.root) {
+-    return
+-  }
+-  switch(arguments.length) {
+-    case 1:
+-      return doVisitFull(visit, this.root)
+-    break
++proto.idle = function(t) {
++  this.center.idle(t)
++  this.up.idle(t)
++  this.right.idle(t)
++  this.radius.idle(t)
++  this.angle.idle(t)
++}
+ 
+-    case 2:
+-      return doVisitHalf(lo, this._compare, visit, this.root)
+-    break
++proto.flush = function(t) {
++  this.center.flush(t)
++  this.up.flush(t)
++  this.right.flush(t)
++  this.radius.flush(t)
++  this.angle.flush(t)
++}
+ 
+-    case 3:
+-      if(this._compare(lo, hi) >= 0) {
+-        return
+-      }
+-      return doVisit(lo, hi, this._compare, visit, this.root)
+-    break
++proto.setDistance = function(t, d) {
++  if(d > 0) {
++    this.radius.set(t, Math.log(d))
+   }
+ }
+ 
+-//First item in list
+-Object.defineProperty(proto, "begin", {
+-  get: function() {
+-    var stack = []
+-    var n = this.root
+-    while(n) {
+-      stack.push(n)
+-      n = n.left
+-    }
+-    return new RedBlackTreeIterator(this, stack)
+-  }
+-})
++proto.lookAt = function(t, eye, center, up) {
++  this.recalcMatrix(t)
+ 
+-//Last item in list
+-Object.defineProperty(proto, "end", {
+-  get: function() {
+-    var stack = []
+-    var n = this.root
+-    while(n) {
+-      stack.push(n)
+-      n = n.right
+-    }
+-    return new RedBlackTreeIterator(this, stack)
++  eye    = eye    || this.computedEye
++  center = center || this.computedCenter
++  up     = up     || this.computedUp
++
++  var ux = up[0]
++  var uy = up[1]
++  var uz = up[2]
++  var ul = len3(ux, uy, uz)
++  if(ul < 1e-6) {
++    return
+   }
+-})
++  ux /= ul
++  uy /= ul
++  uz /= ul
+ 
+-//Find the ith item in the tree
+-proto.at = function(idx) {
+-  if(idx < 0) {
+-    return new RedBlackTreeIterator(this, [])
++  var tx = eye[0] - center[0]
++  var ty = eye[1] - center[1]
++  var tz = eye[2] - center[2]
++  var tl = len3(tx, ty, tz)
++  if(tl < 1e-6) {
++    return
+   }
+-  var n = this.root
+-  var stack = []
+-  while(true) {
+-    stack.push(n)
+-    if(n.left) {
+-      if(idx < n.left._count) {
+-        n = n.left
+-        continue
+-      }
+-      idx -= n.left._count
+-    }
+-    if(!idx) {
+-      return new RedBlackTreeIterator(this, stack)
+-    }
+-    idx -= 1
+-    if(n.right) {
+-      if(idx >= n.right._count) {
+-        break
+-      }
+-      n = n.right
+-    } else {
+-      break
++  tx /= tl
++  ty /= tl
++  tz /= tl
++
++  var right = this.computedRight
++  var rx = right[0]
++  var ry = right[1]
++  var rz = right[2]
++  var ru = ux*rx + uy*ry + uz*rz
++  rx -= ru * ux
++  ry -= ru * uy
++  rz -= ru * uz
++  var rl = len3(rx, ry, rz)
++
++  if(rl < 0.01) {
++    rx = uy * tz - uz * ty
++    ry = uz * tx - ux * tz
++    rz = ux * ty - uy * tx
++    rl = len3(rx, ry, rz)
++    if(rl < 1e-6) {
++      return
+     }
+   }
+-  return new RedBlackTreeIterator(this, [])
+-}
++  rx /= rl
++  ry /= rl
++  rz /= rl
+ 
+-proto.ge = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d <= 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
++  this.up.set(t, ux, uy, uz)
++  this.right.set(t, rx, ry, rz)
++  this.center.set(t, center[0], center[1], center[2])
++  this.radius.set(t, Math.log(tl))
++
++  var fx = uy * rz - uz * ry
++  var fy = uz * rx - ux * rz
++  var fz = ux * ry - uy * rx
++  var fl = len3(fx, fy, fz)
++  fx /= fl
++  fy /= fl
++  fz /= fl
++
++  var tu = ux*tx + uy*ty + uz*tz
++  var tr = rx*tx + ry*ty + rz*tz
++  var tf = fx*tx + fy*ty + fz*tz
++
++  var phi   = Math.asin(clamp1(tu))
++  var theta = Math.atan2(tf, tr)
++
++  var angleState = this.angle._state
++  var lastTheta  = angleState[angleState.length-1]
++  var lastPhi    = angleState[angleState.length-2]
++  lastTheta      = lastTheta % (2.0 * Math.PI)
++  var dp = Math.abs(lastTheta + 2.0 * Math.PI - theta)
++  var d0 = Math.abs(lastTheta - theta)
++  var dn = Math.abs(lastTheta - 2.0 * Math.PI - theta)
++  if(dp < d0) {
++    lastTheta += 2.0 * Math.PI
+   }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++  if(dn < d0) {
++    lastTheta -= 2.0 * Math.PI
++  }
++
++  this.angle.jump(this.angle.lastT(), lastTheta, lastPhi)
++  this.angle.set(t, theta, phi)
+ }
+ 
+-proto.gt = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d < 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d < 0) {
+-      n = n.left
++function createTurntableController(options) {
++  options = options || {}
++
++  var center = options.center || [0,0,0]
++  var up     = options.up     || [0,1,0]
++  var right  = options.right  || findOrthoPair(up)
++  var radius = options.radius || 1.0
++  var theta  = options.theta  || 0.0
++  var phi    = options.phi    || 0.0
++
++  center = [].slice.call(center, 0, 3)
++
++  up = [].slice.call(up, 0, 3)
++  normalize3(up, up)
++
++  right = [].slice.call(right, 0, 3)
++  normalize3(right, right)
++
++  if('eye' in options) {
++    var eye = options.eye
++    var toward = [
++      eye[0]-center[0],
++      eye[1]-center[1],
++      eye[2]-center[2]
++    ]
++    cross(right, toward, up)
++    if(len3(right[0], right[1], right[2]) < 1e-6) {
++      right = findOrthoPair(up)
+     } else {
+-      n = n.right
++      normalize3(right, right)
+     }
++
++    radius = len3(toward[0], toward[1], toward[2])
++
++    var ut = dot3(up, toward) / radius
++    var rt = dot3(right, toward) / radius
++    phi    = Math.acos(ut)
++    theta  = Math.acos(rt)
+   }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++
++  //Use logarithmic coordinates for radius
++  radius = Math.log(radius)
++
++  //Return the controller
++  return new TurntableController(
++    options.zoomMin,
++    options.zoomMax,
++    center,
++    up,
++    right,
++    radius,
++    theta,
++    phi)
+ }
++},{"filtered-vector":83,"gl-mat4/invert":111,"gl-mat4/rotate":115,"gl-vec3/cross":149,"gl-vec3/dot":150,"gl-vec3/normalize":153}],244:[function(require,module,exports){
++"use strict"
+ 
+-proto.lt = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d > 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
++module.exports = twoProduct
++
++var SPLITTER = +(Math.pow(2, 27) + 1.0)
++
++function twoProduct(a, b, result) {
++  var x = a * b
++
++  var c = SPLITTER * a
++  var abig = c - a
++  var ahi = c - abig
++  var alo = a - ahi
++
++  var d = SPLITTER * b
++  var bbig = d - b
++  var bhi = d - bbig
++  var blo = b - bhi
++
++  var err1 = x - (ahi * bhi)
++  var err2 = err1 - (alo * bhi)
++  var err3 = err2 - (ahi * blo)
++
++  var y = alo * blo - err3
++
++  if(result) {
++    result[0] = y
++    result[1] = x
++    return result
+   }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++
++  return [ y, x ]
+ }
++},{}],245:[function(require,module,exports){
++"use strict"
+ 
+-proto.le = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d >= 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d < 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
+-  }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++module.exports = fastTwoSum
++
++function fastTwoSum(a, b, result) {
++	var x = a + b
++	var bv = x - a
++	var av = x - bv
++	var br = b - bv
++	var ar = a - av
++	if(result) {
++		result[0] = ar + br
++		result[1] = x
++		return result
++	}
++	return [ar+br, x]
+ }
++},{}],246:[function(require,module,exports){
++(function (global,Buffer){
++'use strict'
+ 
+-//Finds the item with key if it exists
+-proto.find = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d === 0) {
+-      return new RedBlackTreeIterator(this, stack)
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
++var bits = require('bit-twiddle')
++var dup = require('dup')
++
++//Legacy pool support
++if(!global.__TYPEDARRAY_POOL) {
++  global.__TYPEDARRAY_POOL = {
++      UINT8   : dup([32, 0])
++    , UINT16  : dup([32, 0])
++    , UINT32  : dup([32, 0])
++    , INT8    : dup([32, 0])
++    , INT16   : dup([32, 0])
++    , INT32   : dup([32, 0])
++    , FLOAT   : dup([32, 0])
++    , DOUBLE  : dup([32, 0])
++    , DATA    : dup([32, 0])
++    , UINT8C  : dup([32, 0])
++    , BUFFER  : dup([32, 0])
+   }
+-  return new RedBlackTreeIterator(this, [])
+ }
+ 
+-//Removes item with key from tree
+-proto.remove = function(key) {
+-  var iter = this.find(key)
+-  if(iter) {
+-    return iter.remove()
+-  }
+-  return this
++var hasUint8C = (typeof Uint8ClampedArray) !== 'undefined'
++var POOL = global.__TYPEDARRAY_POOL
++
++//Upgrade pool
++if(!POOL.UINT8C) {
++  POOL.UINT8C = dup([32, 0])
++}
++if(!POOL.BUFFER) {
++  POOL.BUFFER = dup([32, 0])
+ }
+ 
+-//Returns the item at `key`
+-proto.get = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    if(d === 0) {
+-      return n.value
++//New technique: Only allocate from ArrayBufferView and Buffer
++var DATA    = POOL.DATA
++  , BUFFER  = POOL.BUFFER
++
++exports.free = function free(array) {
++  if(Buffer.isBuffer(array)) {
++    BUFFER[bits.log2(array.length)].push(array)
++  } else {
++    if(Object.prototype.toString.call(array) !== '[object ArrayBuffer]') {
++      array = array.buffer
+     }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++    if(!array) {
++      return
+     }
++    var n = array.length || array.byteLength
++    var log_n = bits.log2(n)|0
++    DATA[log_n].push(array)
+   }
+-  return
+ }
+ 
+-//Iterator for red black tree
+-function RedBlackTreeIterator(tree, stack) {
+-  this.tree = tree
+-  this._stack = stack
++function freeArrayBuffer(buffer) {
++  if(!buffer) {
++    return
++  }
++  var n = buffer.length || buffer.byteLength
++  var log_n = bits.log2(n)
++  DATA[log_n].push(buffer)
+ }
+ 
+-var iproto = RedBlackTreeIterator.prototype
++function freeTypedArray(array) {
++  freeArrayBuffer(array.buffer)
++}
+ 
+-//Test if iterator is valid
+-Object.defineProperty(iproto, "valid", {
+-  get: function() {
+-    return this._stack.length > 0
+-  }
+-})
++exports.freeUint8 =
++exports.freeUint16 =
++exports.freeUint32 =
++exports.freeInt8 =
++exports.freeInt16 =
++exports.freeInt32 =
++exports.freeFloat32 = 
++exports.freeFloat =
++exports.freeFloat64 = 
++exports.freeDouble = 
++exports.freeUint8Clamped = 
++exports.freeDataView = freeTypedArray
+ 
+-//Node of the iterator
+-Object.defineProperty(iproto, "node", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1]
+-    }
+-    return null
+-  },
+-  enumerable: true
+-})
++exports.freeArrayBuffer = freeArrayBuffer
+ 
+-//Makes a copy of an iterator
+-iproto.clone = function() {
+-  return new RedBlackTreeIterator(this.tree, this._stack.slice())
++exports.freeBuffer = function freeBuffer(array) {
++  BUFFER[bits.log2(array.length)].push(array)
+ }
+ 
+-//Swaps two nodes
+-function swapNode(n, v) {
+-  n.key = v.key
+-  n.value = v.value
+-  n.left = v.left
+-  n.right = v.right
+-  n._color = v._color
+-  n._count = v._count
+-}
++exports.malloc = function malloc(n, dtype) {
++  if(dtype === undefined || dtype === 'arraybuffer') {
++    return mallocArrayBuffer(n)
++  } else {
++    switch(dtype) {
++      case 'uint8':
++        return mallocUint8(n)
++      case 'uint16':
++        return mallocUint16(n)
++      case 'uint32':
++        return mallocUint32(n)
++      case 'int8':
++        return mallocInt8(n)
++      case 'int16':
++        return mallocInt16(n)
++      case 'int32':
++        return mallocInt32(n)
++      case 'float':
++      case 'float32':
++        return mallocFloat(n)
++      case 'double':
++      case 'float64':
++        return mallocDouble(n)
++      case 'uint8_clamped':
++        return mallocUint8Clamped(n)
++      case 'buffer':
++        return mallocBuffer(n)
++      case 'data':
++      case 'dataview':
++        return mallocDataView(n)
+ 
+-//Fix up a double black node in a tree
+-function fixDoubleBlack(stack) {
+-  var n, p, s, z
+-  for(var i=stack.length-1; i>=0; --i) {
+-    n = stack[i]
+-    if(i === 0) {
+-      n._color = BLACK
+-      return
+-    }
+-    //console.log("visit node:", n.key, i, stack[i].key, stack[i-1].key)
+-    p = stack[i-1]
+-    if(p.left === n) {
+-      //console.log("left child")
+-      s = p.right
+-      if(s.right && s.right._color === RED) {
+-        //console.log("case 1: right sibling child red")
+-        s = p.right = cloneNode(s)
+-        z = s.right = cloneNode(s.right)
+-        p.right = s.left
+-        s.left = p
+-        s.right = z
+-        s._color = p._color
+-        n._color = BLACK
+-        p._color = BLACK
+-        z._color = BLACK
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = s
+-          } else {
+-            pp.right = s
+-          }
+-        }
+-        stack[i-1] = s
+-        return
+-      } else if(s.left && s.left._color === RED) {
+-        //console.log("case 1: left sibling child red")
+-        s = p.right = cloneNode(s)
+-        z = s.left = cloneNode(s.left)
+-        p.right = z.left
+-        s.left = z.right
+-        z.left = p
+-        z.right = s
+-        z._color = p._color
+-        p._color = BLACK
+-        s._color = BLACK
+-        n._color = BLACK
+-        recount(p)
+-        recount(s)
+-        recount(z)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = z
+-          } else {
+-            pp.right = z
+-          }
+-        }
+-        stack[i-1] = z
+-        return
+-      }
+-      if(s._color === BLACK) {
+-        if(p._color === RED) {
+-          //console.log("case 2: black sibling, red parent", p.right.value)
+-          p._color = BLACK
+-          p.right = repaint(RED, s)
+-          return
+-        } else {
+-          //console.log("case 2: black sibling, black parent", p.right.value)
+-          p.right = repaint(RED, s)
+-          continue  
+-        }
+-      } else {
+-        //console.log("case 3: red sibling")
+-        s = cloneNode(s)
+-        p.right = s.left
+-        s.left = p
+-        s._color = p._color
+-        p._color = RED
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = s
+-          } else {
+-            pp.right = s
+-          }
+-        }
+-        stack[i-1] = s
+-        stack[i] = p
+-        if(i+1 < stack.length) {
+-          stack[i+1] = n
+-        } else {
+-          stack.push(n)
+-        }
+-        i = i+2
+-      }
+-    } else {
+-      //console.log("right child")
+-      s = p.left
+-      if(s.left && s.left._color === RED) {
+-        //console.log("case 1: left sibling child red", p.value, p._color)
+-        s = p.left = cloneNode(s)
+-        z = s.left = cloneNode(s.left)
+-        p.left = s.right
+-        s.right = p
+-        s.left = z
+-        s._color = p._color
+-        n._color = BLACK
+-        p._color = BLACK
+-        z._color = BLACK
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = s
+-          } else {
+-            pp.left = s
+-          }
+-        }
+-        stack[i-1] = s
+-        return
+-      } else if(s.right && s.right._color === RED) {
+-        //console.log("case 1: right sibling child red")
+-        s = p.left = cloneNode(s)
+-        z = s.right = cloneNode(s.right)
+-        p.left = z.right
+-        s.right = z.left
+-        z.right = p
+-        z.left = s
+-        z._color = p._color
+-        p._color = BLACK
+-        s._color = BLACK
+-        n._color = BLACK
+-        recount(p)
+-        recount(s)
+-        recount(z)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = z
+-          } else {
+-            pp.left = z
+-          }
+-        }
+-        stack[i-1] = z
+-        return
+-      }
+-      if(s._color === BLACK) {
+-        if(p._color === RED) {
+-          //console.log("case 2: black sibling, red parent")
+-          p._color = BLACK
+-          p.left = repaint(RED, s)
+-          return
+-        } else {
+-          //console.log("case 2: black sibling, black parent")
+-          p.left = repaint(RED, s)
+-          continue  
+-        }
+-      } else {
+-        //console.log("case 3: red sibling")
+-        s = cloneNode(s)
+-        p.left = s.right
+-        s.right = p
+-        s._color = p._color
+-        p._color = RED
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = s
+-          } else {
+-            pp.left = s
+-          }
+-        }
+-        stack[i-1] = s
+-        stack[i] = p
+-        if(i+1 < stack.length) {
+-          stack[i+1] = n
+-        } else {
+-          stack.push(n)
+-        }
+-        i = i+2
+-      }
++      default:
++        return null
+     }
+   }
++  return null
+ }
+ 
+-//Removes item at iterator from tree
+-iproto.remove = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return this.tree
+-  }
+-  //First copy path to node
+-  var cstack = new Array(stack.length)
+-  var n = stack[stack.length-1]
+-  cstack[cstack.length-1] = new RBNode(n._color, n.key, n.value, n.left, n.right, n._count)
+-  for(var i=stack.length-2; i>=0; --i) {
+-    var n = stack[i]
+-    if(n.left === stack[i+1]) {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
+-    } else {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
+-    }
++function mallocArrayBuffer(n) {
++  var n = bits.nextPow2(n)
++  var log_n = bits.log2(n)
++  var d = DATA[log_n]
++  if(d.length > 0) {
++    return d.pop()
+   }
++  return new ArrayBuffer(n)
++}
++exports.mallocArrayBuffer = mallocArrayBuffer
+ 
+-  //Get node
+-  n = cstack[cstack.length-1]
+-  //console.log("start remove: ", n.value)
+-
+-  //If not leaf, then swap with previous node
+-  if(n.left && n.right) {
+-    //console.log("moving to leaf")
+-
+-    //First walk to previous leaf
+-    var split = cstack.length
+-    n = n.left
+-    while(n.right) {
+-      cstack.push(n)
+-      n = n.right
+-    }
+-    //Copy path to leaf
+-    var v = cstack[split-1]
+-    cstack.push(new RBNode(n._color, v.key, v.value, n.left, n.right, n._count))
+-    cstack[split-1].key = n.key
+-    cstack[split-1].value = n.value
++function mallocUint8(n) {
++  return new Uint8Array(mallocArrayBuffer(n), 0, n)
++}
++exports.mallocUint8 = mallocUint8
+ 
+-    //Fix up stack
+-    for(var i=cstack.length-2; i>=split; --i) {
+-      n = cstack[i]
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
+-    }
+-    cstack[split-1].left = cstack[split]
+-  }
+-  //console.log("stack=", cstack.map(function(v) { return v.value }))
++function mallocUint16(n) {
++  return new Uint16Array(mallocArrayBuffer(2*n), 0, n)
++}
++exports.mallocUint16 = mallocUint16
+ 
+-  //Remove leaf node
+-  n = cstack[cstack.length-1]
+-  if(n._color === RED) {
+-    //Easy case: removing red leaf
+-    //console.log("RED leaf")
+-    var p = cstack[cstack.length-2]
+-    if(p.left === n) {
+-      p.left = null
+-    } else if(p.right === n) {
+-      p.right = null
+-    }
+-    cstack.pop()
+-    for(var i=0; i<cstack.length; ++i) {
+-      cstack[i]._count--
+-    }
+-    return new RedBlackTree(this.tree._compare, cstack[0])
+-  } else {
+-    if(n.left || n.right) {
+-      //Second easy case:  Single child black parent
+-      //console.log("BLACK single child")
+-      if(n.left) {
+-        swapNode(n, n.left)
+-      } else if(n.right) {
+-        swapNode(n, n.right)
+-      }
+-      //Child must be red, so repaint it black to balance color
+-      n._color = BLACK
+-      for(var i=0; i<cstack.length-1; ++i) {
+-        cstack[i]._count--
+-      }
+-      return new RedBlackTree(this.tree._compare, cstack[0])
+-    } else if(cstack.length === 1) {
+-      //Third easy case: root
+-      //console.log("ROOT")
+-      return new RedBlackTree(this.tree._compare, null)
+-    } else {
+-      //Hard case: Repaint n, and then do some nasty stuff
+-      //console.log("BLACK leaf no children")
+-      for(var i=0; i<cstack.length; ++i) {
+-        cstack[i]._count--
+-      }
+-      var parent = cstack[cstack.length-2]
+-      fixDoubleBlack(cstack)
+-      //Fix up links
+-      if(parent.left === n) {
+-        parent.left = null
+-      } else {
+-        parent.right = null
+-      }
+-    }
+-  }
+-  return new RedBlackTree(this.tree._compare, cstack[0])
++function mallocUint32(n) {
++  return new Uint32Array(mallocArrayBuffer(4*n), 0, n)
+ }
++exports.mallocUint32 = mallocUint32
+ 
+-//Returns key
+-Object.defineProperty(iproto, "key", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1].key
+-    }
+-    return
+-  },
+-  enumerable: true
+-})
++function mallocInt8(n) {
++  return new Int8Array(mallocArrayBuffer(n), 0, n)
++}
++exports.mallocInt8 = mallocInt8
+ 
+-//Returns value
+-Object.defineProperty(iproto, "value", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1].value
+-    }
+-    return
+-  },
+-  enumerable: true
+-})
++function mallocInt16(n) {
++  return new Int16Array(mallocArrayBuffer(2*n), 0, n)
++}
++exports.mallocInt16 = mallocInt16
+ 
++function mallocInt32(n) {
++  return new Int32Array(mallocArrayBuffer(4*n), 0, n)
++}
++exports.mallocInt32 = mallocInt32
+ 
+-//Returns the position of this iterator in the sorted list
+-Object.defineProperty(iproto, "index", {
+-  get: function() {
+-    var idx = 0
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      var r = this.tree.root
+-      if(r) {
+-        return r._count
+-      }
+-      return 0
+-    } else if(stack[stack.length-1].left) {
+-      idx = stack[stack.length-1].left._count
+-    }
+-    for(var s=stack.length-2; s>=0; --s) {
+-      if(stack[s+1] === stack[s].right) {
+-        ++idx
+-        if(stack[s].left) {
+-          idx += stack[s].left._count
+-        }
+-      }
+-    }
+-    return idx
+-  },
+-  enumerable: true
+-})
++function mallocFloat(n) {
++  return new Float32Array(mallocArrayBuffer(4*n), 0, n)
++}
++exports.mallocFloat32 = exports.mallocFloat = mallocFloat
+ 
+-//Advances iterator to next element in list
+-iproto.next = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return
+-  }
+-  var n = stack[stack.length-1]
+-  if(n.right) {
+-    n = n.right
+-    while(n) {
+-      stack.push(n)
+-      n = n.left
+-    }
++function mallocDouble(n) {
++  return new Float64Array(mallocArrayBuffer(8*n), 0, n)
++}
++exports.mallocFloat64 = exports.mallocDouble = mallocDouble
++
++function mallocUint8Clamped(n) {
++  if(hasUint8C) {
++    return new Uint8ClampedArray(mallocArrayBuffer(n), 0, n)
+   } else {
+-    stack.pop()
+-    while(stack.length > 0 && stack[stack.length-1].right === n) {
+-      n = stack[stack.length-1]
+-      stack.pop()
+-    }
++    return mallocUint8(n)
+   }
+ }
++exports.mallocUint8Clamped = mallocUint8Clamped
+ 
+-//Checks if iterator is at end of tree
+-Object.defineProperty(iproto, "hasNext", {
+-  get: function() {
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      return false
+-    }
+-    if(stack[stack.length-1].right) {
+-      return true
+-    }
+-    for(var s=stack.length-1; s>0; --s) {
+-      if(stack[s-1].left === stack[s]) {
+-        return true
+-      }
+-    }
+-    return false
++function mallocDataView(n) {
++  return new DataView(mallocArrayBuffer(n), 0, n)
++}
++exports.mallocDataView = mallocDataView
++
++function mallocBuffer(n) {
++  n = bits.nextPow2(n)
++  var log_n = bits.log2(n)
++  var cache = BUFFER[log_n]
++  if(cache.length > 0) {
++    return cache.pop()
++  }
++  return new Buffer(n)
++}
++exports.mallocBuffer = mallocBuffer
++
++exports.clearCache = function clearCache() {
++  for(var i=0; i<32; ++i) {
++    POOL.UINT8[i].length = 0
++    POOL.UINT16[i].length = 0
++    POOL.UINT32[i].length = 0
++    POOL.INT8[i].length = 0
++    POOL.INT16[i].length = 0
++    POOL.INT32[i].length = 0
++    POOL.FLOAT[i].length = 0
++    POOL.DOUBLE[i].length = 0
++    POOL.UINT8C[i].length = 0
++    DATA[i].length = 0
++    BUFFER[i].length = 0
++  }
++}
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
++},{"bit-twiddle":35,"buffer":45,"dup":77}],247:[function(require,module,exports){
++"use strict"; "use restrict";
++
++module.exports = UnionFind;
++
++function UnionFind(count) {
++  this.roots = new Array(count);
++  this.ranks = new Array(count);
++  
++  for(var i=0; i<count; ++i) {
++    this.roots[i] = i;
++    this.ranks[i] = 0;
++  }
++}
++
++var proto = UnionFind.prototype
++
++Object.defineProperty(proto, "length", {
++  "get": function() {
++    return this.roots.length
+   }
+ })
+ 
+-//Update value
+-iproto.update = function(value) {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    throw new Error("Can't update empty node!")
++proto.makeSet = function() {
++  var n = this.roots.length;
++  this.roots.push(n);
++  this.ranks.push(0);
++  return n;
++}
++
++proto.find = function(x) {
++  var x0 = x
++  var roots = this.roots;
++  while(roots[x] !== x) {
++    x = roots[x]
+   }
+-  var cstack = new Array(stack.length)
+-  var n = stack[stack.length-1]
+-  cstack[cstack.length-1] = new RBNode(n._color, n.key, value, n.left, n.right, n._count)
+-  for(var i=stack.length-2; i>=0; --i) {
+-    n = stack[i]
+-    if(n.left === stack[i+1]) {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
+-    } else {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
+-    }
++  while(roots[x0] !== x) {
++    var y = roots[x0]
++    roots[x0] = x
++    x0 = y
+   }
+-  return new RedBlackTree(this.tree._compare, cstack[0])
++  return x;
+ }
+ 
+-//Moves iterator backward one element
+-iproto.prev = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return
++proto.link = function(x, y) {
++  var xr = this.find(x)
++    , yr = this.find(y);
++  if(xr === yr) {
++    return;
+   }
+-  var n = stack[stack.length-1]
+-  if(n.left) {
+-    n = n.left
+-    while(n) {
+-      stack.push(n)
+-      n = n.right
+-    }
++  var ranks = this.ranks
++    , roots = this.roots
++    , xd    = ranks[xr]
++    , yd    = ranks[yr];
++  if(xd < yd) {
++    roots[xr] = yr;
++  } else if(yd < xd) {
++    roots[yr] = xr;
+   } else {
+-    stack.pop()
+-    while(stack.length > 0 && stack[stack.length-1].left === n) {
+-      n = stack[stack.length-1]
+-      stack.pop()
+-    }
++    roots[yr] = xr;
++    ++ranks[xr];
+   }
+ }
++},{}],248:[function(require,module,exports){
++"use strict"
+ 
+-//Checks if iterator is at start of tree
+-Object.defineProperty(iproto, "hasPrev", {
+-  get: function() {
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      return false
+-    }
+-    if(stack[stack.length-1].left) {
+-      return true
++function unique_pred(list, compare) {
++  var ptr = 1
++    , len = list.length
++    , a=list[0], b=list[0]
++  for(var i=1; i<len; ++i) {
++    b = a
++    a = list[i]
++    if(compare(a, b)) {
++      if(i === ptr) {
++        ptr++
++        continue
++      }
++      list[ptr++] = a
+     }
+-    for(var s=stack.length-1; s>0; --s) {
+-      if(stack[s-1].right === stack[s]) {
+-        return true
++  }
++  list.length = ptr
++  return list
++}
++
++function unique_eq(list) {
++  var ptr = 1
++    , len = list.length
++    , a=list[0], b = list[0]
++  for(var i=1; i<len; ++i, b=a) {
++    b = a
++    a = list[i]
++    if(a !== b) {
++      if(i === ptr) {
++        ptr++
++        continue
+       }
++      list[ptr++] = a
+     }
+-    return false
+   }
+-})
++  list.length = ptr
++  return list
++}
+ 
+-//Default comparison function
+-function defaultCompare(a, b) {
+-  if(a < b) {
+-    return -1
++function unique(list, compare, sorted) {
++  if(list.length === 0) {
++    return list
+   }
+-  if(a > b) {
+-    return 1
++  if(compare) {
++    if(!sorted) {
++      list.sort(compare)
++    }
++    return unique_pred(list, compare)
+   }
+-  return 0
++  if(!sorted) {
++    list.sort()
++  }
++  return unique_eq(list)
+ }
+ 
+-//Build a tree
+-function createRBTree(compare) {
+-  return new RedBlackTree(compare || defaultCompare, null)
+-}
+-},{}],256:[function(require,module,exports){
++module.exports = unique
++
++},{}],249:[function(require,module,exports){
+ "use strict"
+ 
+-module.exports = createSlabDecomposition
++module.exports = createText
+ 
+-var bounds = require("binary-search-bounds")
+-var createRBTree = require("functional-red-black-tree")
+-var orient = require("robust-orientation")
+-var orderSegments = require("./lib/order-segments")
++var vectorizeText = require("./lib/vtext")
++var defaultCanvas = null
++var defaultContext = null
+ 
+-function SlabDecomposition(slabs, coordinates, horizontal) {
+-  this.slabs = slabs
+-  this.coordinates = coordinates
+-  this.horizontal = horizontal
++if(typeof document !== 'undefined') {
++  defaultCanvas = document.createElement('canvas')
++  defaultCanvas.width = 8192
++  defaultCanvas.height = 1024
++  defaultContext = defaultCanvas.getContext("2d")
+ }
+ 
+-var proto = SlabDecomposition.prototype
+-
+-function compareHorizontal(e, y) {
+-  return e.y - y
++function createText(str, options) {
++  if((typeof options !== "object") || (options === null)) {
++    options = {}
++  }
++  return vectorizeText(
++    str,
++    options.canvas || defaultCanvas,
++    options.context || defaultContext,
++    options)
+ }
+ 
+-function searchBucket(root, p) {
+-  var lastNode = null
+-  while(root) {
+-    var seg = root.key
+-    var l, r
+-    if(seg[0][0] < seg[1][0]) {
+-      l = seg[0]
+-      r = seg[1]
+-    } else {
+-      l = seg[1]
+-      r = seg[0]
+-    }
+-    var o = orient(l, r, p)
+-    if(o < 0) {
+-      root = root.left
+-    } else if(o > 0) {
+-      if(p[0] !== seg[1][0]) {
+-        lastNode = root
+-        root = root.right
+-      } else {
+-        var val = searchBucket(root.right, p)
+-        if(val) {
+-          return val
+-        }
+-        root = root.left
+-      }
+-    } else {
+-      if(p[0] !== seg[1][0]) {
+-        return root
+-      } else {
+-        var val = searchBucket(root.right, p)
+-        if(val) {
+-          return val
+-        }
+-        root = root.left
+-      }
++},{"./lib/vtext":250}],250:[function(require,module,exports){
++"use strict"
++
++module.exports = vectorizeText
++module.exports.processPixels = processPixels
++
++var surfaceNets = require('surface-nets')
++var ndarray = require('ndarray')
++var simplify = require('simplify-planar-graph')
++var cleanPSLG = require('clean-pslg')
++var cdt2d = require('cdt2d')
++var toPolygonCrappy = require('planar-graph-to-polyline')
++
++function transformPositions(positions, options, size) {
++  var align = options.textAlign || "start"
++  var baseline = options.textBaseline || "alphabetic"
++
++  var lo = [1<<30, 1<<30]
++  var hi = [0,0]
++  var n = positions.length
++  for(var i=0; i<n; ++i) {
++    var p = positions[i]
++    for(var j=0; j<2; ++j) {
++      lo[j] = Math.min(lo[j], p[j])|0
++      hi[j] = Math.max(hi[j], p[j])|0
+     }
+   }
+-  return lastNode
+-}
+ 
+-proto.castUp = function(p) {
+-  var bucket = bounds.le(this.coordinates, p[0])
+-  if(bucket < 0) {
+-    return -1
++  var xShift = 0
++  switch(align) {
++    case "center":
++      xShift = -0.5 * (lo[0] + hi[0])
++    break
++
++    case "right":
++    case "end":
++      xShift = -hi[0]
++    break
++
++    case "left":
++    case "start":
++      xShift = -lo[0]
++    break
++
++    default:
++      throw new Error("vectorize-text: Unrecognized textAlign: '" + align + "'")
+   }
+-  var root = this.slabs[bucket]
+-  var hitNode = searchBucket(this.slabs[bucket], p)
+-  var lastHit = -1
+-  if(hitNode) {
+-    lastHit = hitNode.value
++
++  var yShift = 0
++  switch(baseline) {
++    case "hanging":
++    case "top":
++      yShift = -lo[1]
++    break
++
++    case "middle":
++      yShift = -0.5 * (lo[1] + hi[1])
++    break
++
++    case "alphabetic":
++    case "ideographic":
++      yShift = -3 * size
++    break
++
++    case "bottom":
++      yShift = -hi[1]
++    break
++
++    default:
++      throw new Error("vectorize-text: Unrecoginized textBaseline: '" + baseline + "'")
+   }
+-  //Edge case: need to handle horizontal segments (sucks)
+-  if(this.coordinates[bucket] === p[0]) {
+-    var lastSegment = null
+-    if(hitNode) {
+-      lastSegment = hitNode.key
+-    }
+-    if(bucket > 0) {
+-      var otherHitNode = searchBucket(this.slabs[bucket-1], p)
+-      if(otherHitNode) {
+-        if(lastSegment) {
+-          if(orderSegments(otherHitNode.key, lastSegment) > 0) {
+-            lastSegment = otherHitNode.key
+-            lastHit = otherHitNode.value
+-          }
+-        } else {
+-          lastHit = otherHitNode.value
+-          lastSegment = otherHitNode.key
+-        }
+-      }
+-    }
+-    var horiz = this.horizontal[bucket]
+-    if(horiz.length > 0) {
+-      var hbucket = bounds.ge(horiz, p[1], compareHorizontal)
+-      if(hbucket < horiz.length) {
+-        var e = horiz[hbucket]
+-        if(p[1] === e.y) {
+-          if(e.closed) {
+-            return e.index
+-          } else {
+-            while(hbucket < horiz.length-1 && horiz[hbucket+1].y === p[1]) {
+-              hbucket = hbucket+1
+-              e = horiz[hbucket]
+-              if(e.closed) {
+-                return e.index
+-              }
+-            }
+-            if(e.y === p[1] && !e.start) {
+-              hbucket = hbucket+1
+-              if(hbucket >= horiz.length) {
+-                return lastHit
+-              }
+-              e = horiz[hbucket]
+-            }
+-          }
+-        }
+-        //Check if e is above/below last segment
+-        if(e.start) {
+-          if(lastSegment) {
+-            var o = orient(lastSegment[0], lastSegment[1], [p[0], e.y])
+-            if(lastSegment[0][0] > lastSegment[1][0]) {
+-              o = -o
+-            }
+-            if(o > 0) {
+-              lastHit = e.index
+-            }
+-          } else {
+-            lastHit = e.index
+-          }
+-        } else if(e.y !== p[1]) {
+-          lastHit = e.index
+-        }
+-      }
+-    }
++
++  var scale = 1.0 / size
++  if("lineHeight" in options) {
++    scale *= +options.lineHeight
++  } else if("width" in options) {
++    scale = options.width / (hi[0] - lo[0])
++  } else if("height" in options) {
++    scale = options.height / (hi[1] - lo[1])
+   }
+-  return lastHit
+-}
+-
+-function IntervalSegment(y, index, start, closed) {
+-  this.y = y
+-  this.index = index
+-  this.start = start
+-  this.closed = closed
+-}
+ 
+-function Event(x, segment, create, index) {
+-  this.x = x
+-  this.segment = segment
+-  this.create = create
+-  this.index = index
++  return positions.map(function(p) {
++    return [ scale * (p[0] + xShift), scale * (p[1] + yShift) ]
++  })
+ }
+ 
+-
+-function createSlabDecomposition(segments) {
+-  var numSegments = segments.length
+-  var numEvents = 2 * numSegments
+-  var events = new Array(numEvents)
+-  for(var i=0; i<numSegments; ++i) {
+-    var s = segments[i]
+-    var f = s[0][0] < s[1][0]
+-    events[2*i] = new Event(s[0][0], s, f, i)
+-    events[2*i+1] = new Event(s[1][0], s, !f, i)
++function getPixels(canvas, context, str, size) {
++  var width = Math.ceil(context.measureText(str).width + 2*size)|0
++  if(width > 8192) {
++    throw new Error("vectorize-text: String too long (sorry, this will get fixed later)")
+   }
+-  events.sort(function(a,b) {
+-    var d = a.x - b.x
+-    if(d) {
+-      return d
+-    }
+-    d = a.create - b.create
+-    if(d) {
+-      return d
+-    }
+-    return Math.min(a.segment[0][1], a.segment[1][1]) - Math.min(b.segment[0][1], b.segment[1][1])
+-  })
+-  var tree = createRBTree(orderSegments)
+-  var slabs = []
+-  var lines = []
+-  var horizontal = []
+-  var lastX = -Infinity
+-  for(var i=0; i<numEvents; ) {
+-    var x = events[i].x
+-    var horiz = []
+-    while(i < numEvents) {
+-      var e = events[i]
+-      if(e.x !== x) {
+-        break
+-      }
+-      i += 1
+-      if(e.segment[0][0] === e.x && e.segment[1][0] === e.x) {
+-        if(e.create) {
+-          if(e.segment[0][1] < e.segment[1][1]) {
+-            horiz.push(new IntervalSegment(
+-                e.segment[0][1],
+-                e.index,
+-                true,
+-                true))
+-            horiz.push(new IntervalSegment(
+-                e.segment[1][1],
+-                e.index,
+-                false,
+-                false))
+-          } else {
+-            horiz.push(new IntervalSegment(
+-                e.segment[1][1],
+-                e.index,
+-                true,
+-                false))
+-            horiz.push(new IntervalSegment(
+-                e.segment[0][1],
+-                e.index,
+-                false,
+-                true))
+-          }
+-        }
+-      } else {
+-        if(e.create) {
+-          tree = tree.insert(e.segment, e.index)
+-        } else {
+-          tree = tree.remove(e.segment)
+-        }
+-      }
+-    }
+-    slabs.push(tree.root)
+-    lines.push(x)
+-    horizontal.push(horiz)
++  var height = 3 * size
++  if(canvas.height < height) {
++    canvas.height = height
+   }
+-  return new SlabDecomposition(slabs, lines, horizontal)
+-}
+-},{"./lib/order-segments":254,"binary-search-bounds":252,"functional-red-black-tree":255,"robust-orientation":225}],257:[function(require,module,exports){
+-module.exports = preprocessPolygon
+ 
+-var orient = require('robust-orientation')[3]
+-var makeSlabs = require('slab-decomposition')
+-var makeIntervalTree = require('interval-tree-1d')
+-var bsearch = require('binary-search-bounds')
++  context.fillStyle = "#000"
++  context.fillRect(0, 0, canvas.width, canvas.height)
+ 
+-function visitInterval() {
+-  return true
+-}
++  context.fillStyle = "#fff"
++  context.fillText(str, size, 2*size)
+ 
+-function intervalSearch(table) {
+-  return function(x, y) {
+-    var tree = table[x]
+-    if(tree) {
+-      return !!tree.queryPoint(y, visitInterval)
+-    }
+-    return false
+-  }
++  //Cut pixels from image
++  var pixelData = context.getImageData(0, 0, width, height)
++  var pixels = ndarray(pixelData.data, [height, width, 4])
++
++  return pixels.pick(-1,-1,0).transpose(1,0)
+ }
+ 
+-function buildVerticalIndex(segments) {
+-  var table = {}
+-  for(var i=0; i<segments.length; ++i) {
+-    var s = segments[i]
+-    var x = s[0][0]
+-    var y0 = s[0][1]
+-    var y1 = s[1][1]
+-    var p = [ Math.min(y0, y1), Math.max(y0, y1) ]
+-    if(x in table) {
+-      table[x].push(p)
+-    } else {
+-      table[x] = [ p ]
+-    }
++function getContour(pixels, doSimplify) {
++  var contour = surfaceNets(pixels, 128)
++  if(doSimplify) {
++    return simplify(contour.cells, contour.positions, 0.25)
+   }
+-  var intervalTable = {}
+-  var keys = Object.keys(table)
+-  for(var i=0; i<keys.length; ++i) {
+-    var segs = table[keys[i]]
+-    intervalTable[keys[i]] = makeIntervalTree(segs)
++  return {
++    edges: contour.cells,
++    positions: contour.positions
+   }
+-  return intervalSearch(intervalTable)
+ }
+ 
+-function buildSlabSearch(slabs, coordinates) {
+-  return function(p) {
+-    var bucket = bsearch.le(coordinates, p[0])
+-    if(bucket < 0) {
+-      return 1
+-    }
+-    var root = slabs[bucket]
+-    if(!root) {
+-      if(bucket > 0 && coordinates[bucket] === p[0]) {
+-        root = slabs[bucket-1]
+-      } else {
+-        return 1
+-      }
+-    }
+-    var lastOrientation = 1
+-    while(root) {
+-      var s = root.key
+-      var o = orient(p, s[0], s[1])
+-      if(s[0][0] < s[1][0]) {
+-        if(o < 0) {
+-          root = root.left
+-        } else if(o > 0) {
+-          lastOrientation = -1
+-          root = root.right
+-        } else {
+-          return 0
++function processPixelsImpl(pixels, options, size, simplify) {
++  //Extract contour
++  var contour = getContour(pixels, simplify)
++
++  //Apply warp to positions
++  var positions = transformPositions(contour.positions, options, size)
++  var edges     = contour.edges
++  var flip = "ccw" === options.orientation
++
++  //Clean up the PSLG, resolve self intersections, etc.
++  cleanPSLG(positions, edges)
++
++  //If triangulate flag passed, triangulate the result
++  if(options.polygons || options.polygon || options.polyline) {
++    var result = toPolygonCrappy(edges, positions)
++    var nresult = new Array(result.length)
++    for(var i=0; i<result.length; ++i) {
++      var loops = result[i]
++      var nloops = new Array(loops.length)
++      for(var j=0; j<loops.length; ++j) {
++        var loop = loops[j]
++        var nloop = new Array(loop.length)
++        for(var k=0; k<loop.length; ++k) {
++          nloop[k] = positions[loop[k]].slice()
+         }
+-      } else {
+-        if(o > 0) {
+-          root = root.left
+-        } else if(o < 0) {
+-          lastOrientation = 1
+-          root = root.right
+-        } else {
+-          return 0
++        if(flip) {
++          nloop.reverse()
+         }
++        nloops[j] = nloop
+       }
++      nresult[i] = nloops
++    }
++    return nresult
++  } else if(options.triangles || options.triangulate || options.triangle) {
++    return {
++      cells: cdt2d(positions, edges, {
++        delaunay: false,
++        exterior: false,
++        interior: true
++      }),
++      positions: positions
++    }
++  } else {
++    return {
++      edges:     edges,
++      positions: positions
+     }
+-    return lastOrientation
+   }
+ }
+ 
+-function classifyEmpty(p) {
+-  return 1
+-}
+-
+-function createClassifyVertical(testVertical) {
+-  return function classify(p) {
+-    if(testVertical(p[0], p[1])) {
+-      return 0
++function processPixels(pixels, options, size) {
++  try {
++    return processPixelsImpl(pixels, options, size, true)
++  } catch(e) {}
++  try {
++    return processPixelsImpl(pixels, options, size, false)
++  } catch(e) {}
++  if(options.polygons || options.polyline || options.polygon) {
++    return []
++  }
++  if(options.triangles || options.triangulate || options.triangle) {
++    return {
++      cells: [],
++      positions: []
+     }
+-    return 1
++  }
++  return {
++    edges: [],
++    positions: []
+   }
+ }
+ 
+-function createClassifyPointDegen(testVertical, testNormal) {
+-  return function classify(p) {
+-    if(testVertical(p[0], p[1])) {
+-      return 0
+-    }
+-    return testNormal(p)
+-  }
++function vectorizeText(str, canvas, context, options) {
++  var size = options.size || 64
++  var family = options.font || "normal"
++
++  context.font = size + "px " + family
++  context.textAlign = "start"
++  context.textBaseline = "alphabetic"
++  context.direction = "ltr"
++
++  var pixels = getPixels(canvas, context, str, size)
++
++  return processPixels(pixels, options, size)
+ }
+ 
+-function preprocessPolygon(loops) {
+-  //Compute number of loops
+-  var numLoops = loops.length
++},{"cdt2d":48,"clean-pslg":57,"ndarray":191,"planar-graph-to-polyline":202,"simplify-planar-graph":233,"surface-nets":239}],251:[function(require,module,exports){
++// Copyright (C) 2011 Google Inc.
++//
++// Licensed under the Apache License, Version 2.0 (the "License");
++// you may not use this file except in compliance with the License.
++// You may obtain a copy of the License at
++//
++// http://www.apache.org/licenses/LICENSE-2.0
++//
++// Unless required by applicable law or agreed to in writing, software
++// distributed under the License is distributed on an "AS IS" BASIS,
++// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
++// See the License for the specific language governing permissions and
++// limitations under the License.
+ 
+-  //Unpack segments
+-  var segments = []
+-  var vsegments = []
+-  var ptr = 0
+-  for(var i=0; i<numLoops; ++i) {
+-    var loop = loops[i]
+-    var numVertices = loop.length
+-    for(var s=numVertices-1,t=0; t<numVertices; s=(t++)) {
+-      var a = loop[s]
+-      var b = loop[t]
+-      if(a[0] === b[0]) {
+-        vsegments.push([a,b])
+-      } else {
+-        segments.push([a,b])
+-      }
+-    }
++/**
++ * @fileoverview Install a leaky WeakMap emulation on platforms that
++ * don't provide a built-in one.
++ *
++ * <p>Assumes that an ES5 platform where, if {@code WeakMap} is
++ * already present, then it conforms to the anticipated ES6
++ * specification. To run this file on an ES5 or almost ES5
++ * implementation where the {@code WeakMap} specification does not
++ * quite conform, run <code>repairES5.js</code> first.
++ *
++ * <p>Even though WeakMapModule is not global, the linter thinks it
++ * is, which is why it is in the overrides list below.
++ *
++ * <p>NOTE: Before using this WeakMap emulation in a non-SES
++ * environment, see the note below about hiddenRecord.
++ *
++ * @author Mark S. Miller
++ * @requires crypto, ArrayBuffer, Uint8Array, navigator, console
++ * @overrides WeakMap, ses, Proxy
++ * @overrides WeakMapModule
++ */
++
++/**
++ * This {@code WeakMap} emulation is observably equivalent to the
++ * ES-Harmony WeakMap, but with leakier garbage collection properties.
++ *
++ * <p>As with true WeakMaps, in this emulation, a key does not
++ * retain maps indexed by that key and (crucially) a map does not
++ * retain the keys it indexes. A map by itself also does not retain
++ * the values associated with that map.
++ *
++ * <p>However, the values associated with a key in some map are
++ * retained so long as that key is retained and those associations are
++ * not overridden. For example, when used to support membranes, all
++ * values exported from a given membrane will live for the lifetime
++ * they would have had in the absence of an interposed membrane. Even
++ * when the membrane is revoked, all objects that would have been
++ * reachable in the absence of revocation will still be reachable, as
++ * far as the GC can tell, even though they will no longer be relevant
++ * to ongoing computation.
++ *
++ * <p>The API implemented here is approximately the API as implemented
++ * in FF6.0a1 and agreed to by MarkM, Andreas Gal, and Dave Herman,
++ * rather than the offially approved proposal page. TODO(erights):
++ * upgrade the ecmascript WeakMap proposal page to explain this API
++ * change and present to EcmaScript committee for their approval.
++ *
++ * <p>The first difference between the emulation here and that in
++ * FF6.0a1 is the presence of non enumerable {@code get___, has___,
++ * set___, and delete___} methods on WeakMap instances to represent
++ * what would be the hidden internal properties of a primitive
++ * implementation. Whereas the FF6.0a1 WeakMap.prototype methods
++ * require their {@code this} to be a genuine WeakMap instance (i.e.,
++ * an object of {@code [[Class]]} "WeakMap}), since there is nothing
++ * unforgeable about the pseudo-internal method names used here,
++ * nothing prevents these emulated prototype methods from being
++ * applied to non-WeakMaps with pseudo-internal methods of the same
++ * names.
++ *
++ * <p>Another difference is that our emulated {@code
++ * WeakMap.prototype} is not itself a WeakMap. A problem with the
++ * current FF6.0a1 API is that WeakMap.prototype is itself a WeakMap
++ * providing ambient mutability and an ambient communications
++ * channel. Thus, if a WeakMap is already present and has this
++ * problem, repairES5.js wraps it in a safe wrappper in order to
++ * prevent access to this channel. (See
++ * PATCH_MUTABLE_FROZEN_WEAKMAP_PROTO in repairES5.js).
++ */
++
++/**
++ * If this is a full <a href=
++ * "http://code.google.com/p/es-lab/wiki/SecureableES5"
++ * >secureable ES5</a> platform and the ES-Harmony {@code WeakMap} is
++ * absent, install an approximate emulation.
++ *
++ * <p>If WeakMap is present but cannot store some objects, use our approximate
++ * emulation as a wrapper.
++ *
++ * <p>If this is almost a secureable ES5 platform, then WeakMap.js
++ * should be run after repairES5.js.
++ *
++ * <p>See {@code WeakMap} for documentation of the garbage collection
++ * properties of this WeakMap emulation.
++ */
++(function WeakMapModule() {
++  "use strict";
++
++  if (typeof ses !== 'undefined' && ses.ok && !ses.ok()) {
++    // already too broken, so give up
++    return;
+   }
+ 
+-  //Degenerate case: All loops are empty
+-  if(segments.length === 0) {
+-    if(vsegments.length === 0) {
+-      return classifyEmpty
+-    } else {
+-      return createClassifyVertical(buildVerticalIndex(vsegments))
++  /**
++   * In some cases (current Firefox), we must make a choice betweeen a
++   * WeakMap which is capable of using all varieties of host objects as
++   * keys and one which is capable of safely using proxies as keys. See
++   * comments below about HostWeakMap and DoubleWeakMap for details.
++   *
++   * This function (which is a global, not exposed to guests) marks a
++   * WeakMap as permitted to do what is necessary to index all host
++   * objects, at the cost of making it unsafe for proxies.
++   *
++   * Do not apply this function to anything which is not a genuine
++   * fresh WeakMap.
++   */
++  function weakMapPermitHostObjects(map) {
++    // identity of function used as a secret -- good enough and cheap
++    if (map.permitHostObjects___) {
++      map.permitHostObjects___(weakMapPermitHostObjects);
+     }
+   }
++  if (typeof ses !== 'undefined') {
++    ses.weakMapPermitHostObjects = weakMapPermitHostObjects;
++  }
+ 
+-  //Build slab decomposition
+-  var slabs = makeSlabs(segments)
+-  var testSlab = buildSlabSearch(slabs.slabs, slabs.coordinates)
++  // IE 11 has no Proxy but has a broken WeakMap such that we need to patch
++  // it using DoubleWeakMap; this flag tells DoubleWeakMap so.
++  var doubleWeakMapCheckSilentFailure = false;
+ 
+-  if(vsegments.length === 0) {
+-    return testSlab
+-  } else {
+-    return createClassifyPointDegen(
+-      buildVerticalIndex(vsegments),
+-      testSlab)
++  // Check if there is already a good-enough WeakMap implementation, and if so
++  // exit without replacing it.
++  if (typeof WeakMap === 'function') {
++    var HostWeakMap = WeakMap;
++    // There is a WeakMap -- is it good enough?
++    if (typeof navigator !== 'undefined' &&
++        /Firefox/.test(navigator.userAgent)) {
++      // We're now *assuming not*, because as of this writing (2013-05-06)
++      // Firefox's WeakMaps have a miscellany of objects they won't accept, and
++      // we don't want to make an exhaustive list, and testing for just one
++      // will be a problem if that one is fixed alone (as they did for Event).
++
++      // If there is a platform that we *can* reliably test on, here's how to
++      // do it:
++      //  var problematic = ... ;
++      //  var testHostMap = new HostWeakMap();
++      //  try {
++      //    testHostMap.set(problematic, 1);  // Firefox 20 will throw here
++      //    if (testHostMap.get(problematic) === 1) {
++      //      return;
++      //    }
++      //  } catch (e) {}
++
++    } else {
++      // IE 11 bug: WeakMaps silently fail to store frozen objects.
++      var testMap = new HostWeakMap();
++      var testObject = Object.freeze({});
++      testMap.set(testObject, 1);
++      if (testMap.get(testObject) !== 1) {
++        doubleWeakMapCheckSilentFailure = true;
++        // Fall through to installing our WeakMap.
++      } else {
++        module.exports = WeakMap;
++        return;
++      }
++    }
+   }
+-}
+-},{"binary-search-bounds":252,"interval-tree-1d":253,"robust-orientation":225,"slab-decomposition":256}],258:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = planarGraphToPolyline
++  var hop = Object.prototype.hasOwnProperty;
++  var gopn = Object.getOwnPropertyNames;
++  var defProp = Object.defineProperty;
++  var isExtensible = Object.isExtensible;
+ 
+-var e2a = require('edges-to-adjacency-list')
+-var planarDual = require('planar-dual')
+-var preprocessPolygon = require('point-in-big-polygon')
+-var twoProduct = require('two-product')
+-var robustSum = require('robust-sum')
+-var uniq = require('uniq')
+-var trimLeaves = require('./lib/trim-leaves')
++  /**
++   * Security depends on HIDDEN_NAME being both <i>unguessable</i> and
++   * <i>undiscoverable</i> by untrusted code.
++   *
++   * <p>Given the known weaknesses of Math.random() on existing
++   * browsers, it does not generate unguessability we can be confident
++   * of.
++   *
++   * <p>It is the monkey patching logic in this file that is intended
++   * to ensure undiscoverability. The basic idea is that there are
++   * three fundamental means of discovering properties of an object:
++   * The for/in loop, Object.keys(), and Object.getOwnPropertyNames(),
++   * as well as some proposed ES6 extensions that appear on our
++   * whitelist. The first two only discover enumerable properties, and
++   * we only use HIDDEN_NAME to name a non-enumerable property, so the
++   * only remaining threat should be getOwnPropertyNames and some
++   * proposed ES6 extensions that appear on our whitelist. We monkey
++   * patch them to remove HIDDEN_NAME from the list of properties they
++   * returns.
++   *
++   * <p>TODO(erights): On a platform with built-in Proxies, proxies
++   * could be used to trap and thereby discover the HIDDEN_NAME, so we
++   * need to monkey patch Proxy.create, Proxy.createFunction, etc, in
++   * order to wrap the provided handler with the real handler which
++   * filters out all traps using HIDDEN_NAME.
++   *
++   * <p>TODO(erights): Revisit Mike Stay's suggestion that we use an
++   * encapsulated function at a not-necessarily-secret name, which
++   * uses the Stiegler shared-state rights amplification pattern to
++   * reveal the associated value only to the WeakMap in which this key
++   * is associated with that value. Since only the key retains the
++   * function, the function can also remember the key without causing
++   * leakage of the key, so this doesn't violate our general gc
++   * goals. In addition, because the name need not be a guarded
++   * secret, we could efficiently handle cross-frame frozen keys.
++   */
++  var HIDDEN_NAME_PREFIX = 'weakmap:';
++  var HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'ident:' + Math.random() + '___';
+ 
+-function makeArray(length, fill) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = fill
++  if (typeof crypto !== 'undefined' &&
++      typeof crypto.getRandomValues === 'function' &&
++      typeof ArrayBuffer === 'function' &&
++      typeof Uint8Array === 'function') {
++    var ab = new ArrayBuffer(25);
++    var u8s = new Uint8Array(ab);
++    crypto.getRandomValues(u8s);
++    HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'rand:' +
++      Array.prototype.map.call(u8s, function(u8) {
++        return (u8 % 36).toString(36);
++      }).join('') + '___';
+   }
+-  return result
+-}
+ 
+-function makeArrayOfArrays(length) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = []
++  function isNotHiddenName(name) {
++    return !(
++        name.substr(0, HIDDEN_NAME_PREFIX.length) == HIDDEN_NAME_PREFIX &&
++        name.substr(name.length - 3) === '___');
+   }
+-  return result
+-}
+ 
++  /**
++   * Monkey patch getOwnPropertyNames to avoid revealing the
++   * HIDDEN_NAME.
++   *
++   * <p>The ES5.1 spec requires each name to appear only once, but as
++   * of this writing, this requirement is controversial for ES6, so we
++   * made this code robust against this case. If the resulting extra
++   * search turns out to be expensive, we can probably relax this once
++   * ES6 is adequately supported on all major browsers, iff no browser
++   * versions we support at that time have relaxed this constraint
++   * without providing built-in ES6 WeakMaps.
++   */
++  defProp(Object, 'getOwnPropertyNames', {
++    value: function fakeGetOwnPropertyNames(obj) {
++      return gopn(obj).filter(isNotHiddenName);
++    }
++  });
+ 
+-function planarGraphToPolyline(edges, positions) {
++  /**
++   * getPropertyNames is not in ES5 but it is proposed for ES6 and
++   * does appear in our whitelist, so we need to clean it too.
++   */
++  if ('getPropertyNames' in Object) {
++    var originalGetPropertyNames = Object.getPropertyNames;
++    defProp(Object, 'getPropertyNames', {
++      value: function fakeGetPropertyNames(obj) {
++        return originalGetPropertyNames(obj).filter(isNotHiddenName);
++      }
++    });
++  }
+ 
+-  //Trim leaves
+-  var result = trimLeaves(edges, positions)
+-  edges = result[0]
+-  positions = result[1]
++  /**
++   * <p>To treat objects as identity-keys with reasonable efficiency
++   * on ES5 by itself (i.e., without any object-keyed collections), we
++   * need to add a hidden property to such key objects when we
++   * can. This raises several issues:
++   * <ul>
++   * <li>Arranging to add this property to objects before we lose the
++   *     chance, and
++   * <li>Hiding the existence of this new property from most
++   *     JavaScript code.
++   * <li>Preventing <i>certification theft</i>, where one object is
++   *     created falsely claiming to be the key of an association
++   *     actually keyed by another object.
++   * <li>Preventing <i>value theft</i>, where untrusted code with
++   *     access to a key object but not a weak map nevertheless
++   *     obtains access to the value associated with that key in that
++   *     weak map.
++   * </ul>
++   * We do so by
++   * <ul>
++   * <li>Making the name of the hidden property unguessable, so "[]"
++   *     indexing, which we cannot intercept, cannot be used to access
++   *     a property without knowing the name.
++   * <li>Making the hidden property non-enumerable, so we need not
++   *     worry about for-in loops or {@code Object.keys},
++   * <li>monkey patching those reflective methods that would
++   *     prevent extensions, to add this hidden property first,
++   * <li>monkey patching those methods that would reveal this
++   *     hidden property.
++   * </ul>
++   * Unfortunately, because of same-origin iframes, we cannot reliably
++   * add this hidden property before an object becomes
++   * non-extensible. Instead, if we encounter a non-extensible object
++   * without a hidden record that we can detect (whether or not it has
++   * a hidden record stored under a name secret to us), then we just
++   * use the key object itself to represent its identity in a brute
++   * force leaky map stored in the weak map, losing all the advantages
++   * of weakness for these.
++   */
++  function getHiddenRecord(key) {
++    if (key !== Object(key)) {
++      throw new TypeError('Not an object: ' + key);
++    }
++    var hiddenRecord = key[HIDDEN_NAME];
++    if (hiddenRecord && hiddenRecord.key === key) { return hiddenRecord; }
++    if (!isExtensible(key)) {
++      // Weak map must brute force, as explained in doc-comment above.
++      return void 0;
++    }
+ 
+-  var numVertices = positions.length
+-  var numEdges = edges.length
++    // The hiddenRecord and the key point directly at each other, via
++    // the "key" and HIDDEN_NAME properties respectively. The key
++    // field is for quickly verifying that this hidden record is an
++    // own property, not a hidden record from up the prototype chain.
++    //
++    // NOTE: Because this WeakMap emulation is meant only for systems like
++    // SES where Object.prototype is frozen without any numeric
++    // properties, it is ok to use an object literal for the hiddenRecord.
++    // This has two advantages:
++    // * It is much faster in a performance critical place
++    // * It avoids relying on Object.create(null), which had been
++    //   problematic on Chrome 28.0.1480.0. See
++    //   https://code.google.com/p/google-caja/issues/detail?id=1687
++    hiddenRecord = { key: key };
+ 
+-  //Calculate adjacency list, check manifold
+-  var adj = e2a(edges, positions.length)
+-  for(var i=0; i<numVertices; ++i) {
+-    if(adj[i].length % 2 === 1) {
+-      throw new Error('planar-graph-to-polyline: graph must be manifold')
+-    }
+-  }
++    // When using this WeakMap emulation on platforms where
++    // Object.prototype might not be frozen and Object.create(null) is
++    // reliable, use the following two commented out lines instead.
++    // hiddenRecord = Object.create(null);
++    // hiddenRecord.key = key;
+ 
+-  //Get faces
+-  var faces = planarDual(edges, positions)
++    // Please contact us if you need this to work on platforms where
++    // Object.prototype might not be frozen and
++    // Object.create(null) might not be reliable.
+ 
+-  //Check orientation of a polygon using exact arithmetic
+-  function ccw(c) {
+-    var n = c.length
+-    var area = [0]
+-    for(var j=0; j<n; ++j) {
+-      var a = positions[c[j]]
+-      var b = positions[c[(j+1)%n]]
+-      var t00 = twoProduct(-a[0], a[1])
+-      var t01 = twoProduct(-a[0], b[1])
+-      var t10 = twoProduct( b[0], a[1])
+-      var t11 = twoProduct( b[0], b[1])
+-      area = robustSum(area, robustSum(robustSum(t00, t01), robustSum(t10, t11)))
++    try {
++      defProp(key, HIDDEN_NAME, {
++        value: hiddenRecord,
++        writable: false,
++        enumerable: false,
++        configurable: false
++      });
++      return hiddenRecord;
++    } catch (error) {
++      // Under some circumstances, isExtensible seems to misreport whether
++      // the HIDDEN_NAME can be defined.
++      // The circumstances have not been isolated, but at least affect
++      // Node.js v0.10.26 on TravisCI / Linux, but not the same version of
++      // Node.js on OS X.
++      return void 0;
+     }
+-    return area[area.length-1] > 0
+   }
+ 
+-  //Extract all clockwise faces
+-  faces = faces.filter(ccw)
+-
+-  //Detect which loops are contained in one another to handle parent-of relation
+-  var numFaces = faces.length
+-  var parent = new Array(numFaces)
+-  var containment = new Array(numFaces)
+-  for(var i=0; i<numFaces; ++i) {
+-    parent[i] = i
+-    var row = new Array(numFaces)
+-    var loopVertices = faces[i].map(function(v) {
+-      return positions[v]
+-    })
+-    var pmc = preprocessPolygon([loopVertices])
+-    var count = 0
+-    outer:
+-    for(var j=0; j<numFaces; ++j) {
+-      row[j] = 0
+-      if(i === j) {
+-        continue
++  /**
++   * Monkey patch operations that would make their argument
++   * non-extensible.
++   *
++   * <p>The monkey patched versions throw a TypeError if their
++   * argument is not an object, so it should only be done to functions
++   * that should throw a TypeError anyway if their argument is not an
++   * object.
++   */
++  (function(){
++    var oldFreeze = Object.freeze;
++    defProp(Object, 'freeze', {
++      value: function identifyingFreeze(obj) {
++        getHiddenRecord(obj);
++        return oldFreeze(obj);
+       }
+-      var c = faces[j]
+-      var n = c.length
+-      for(var k=0; k<n; ++k) {
+-        var d = pmc(positions[c[k]])
+-        if(d !== 0) {
+-          if(d < 0) {
+-            row[j] = 1
+-            count += 1
+-          }
+-          continue outer
+-        }
++    });
++    var oldSeal = Object.seal;
++    defProp(Object, 'seal', {
++      value: function identifyingSeal(obj) {
++        getHiddenRecord(obj);
++        return oldSeal(obj);
+       }
+-      row[j] = 1
+-      count += 1
+-    }
+-    containment[i] = [count, i, row]
+-  }
+-  containment.sort(function(a,b) {
+-    return b[0] - a[0]
+-  })
+-  for(var i=0; i<numFaces; ++i) {
+-    var row = containment[i]
+-    var idx = row[1]
+-    var children = row[2]
+-    for(var j=0; j<numFaces; ++j) {
+-      if(children[j]) {
+-        parent[j] = idx
++    });
++    var oldPreventExtensions = Object.preventExtensions;
++    defProp(Object, 'preventExtensions', {
++      value: function identifyingPreventExtensions(obj) {
++        getHiddenRecord(obj);
++        return oldPreventExtensions(obj);
+       }
+-    }
++    });
++  })();
++
++  function constFunc(func) {
++    func.prototype = null;
++    return Object.freeze(func);
+   }
+ 
+-  //Initialize face adjacency list
+-  var fadj = makeArrayOfArrays(numFaces)
+-  for(var i=0; i<numFaces; ++i) {
+-    fadj[i].push(parent[i])
+-    fadj[parent[i]].push(i)
++  var calledAsFunctionWarningDone = false;
++  function calledAsFunctionWarning() {
++    // Future ES6 WeakMap is currently (2013-09-10) expected to reject WeakMap()
++    // but we used to permit it and do it ourselves, so warn only.
++    if (!calledAsFunctionWarningDone && typeof console !== 'undefined') {
++      calledAsFunctionWarningDone = true;
++      console.warn('WeakMap should be invoked as new WeakMap(), not ' +
++          'WeakMap(). This will be an error in the future.');
++    }
+   }
+ 
+-  //Build adjacency matrix for edges
+-  var edgeAdjacency = {}
+-  var internalVertices = makeArray(numVertices, false)
+-  for(var i=0; i<numFaces; ++i) {
+-    var c = faces[i]
+-    var n = c.length
+-    for(var j=0; j<n; ++j) {
+-      var a = c[j]
+-      var b = c[(j+1)%n]
+-      var key = Math.min(a,b) + ":" + Math.max(a,b)
+-      if(key in edgeAdjacency) {
+-        var neighbor = edgeAdjacency[key]
+-        fadj[neighbor].push(i)
+-        fadj[i].push(neighbor)
+-        internalVertices[a] = internalVertices[b] = true
++  var nextId = 0;
++
++  var OurWeakMap = function() {
++    if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
++      calledAsFunctionWarning();
++    }
++
++    // We are currently (12/25/2012) never encountering any prematurely
++    // non-extensible keys.
++    var keys = []; // brute force for prematurely non-extensible keys.
++    var values = []; // brute force for corresponding values.
++    var id = nextId++;
++
++    function get___(key, opt_default) {
++      var index;
++      var hiddenRecord = getHiddenRecord(key);
++      if (hiddenRecord) {
++        return id in hiddenRecord ? hiddenRecord[id] : opt_default;
+       } else {
+-        edgeAdjacency[key] = i
++        index = keys.indexOf(key);
++        return index >= 0 ? values[index] : opt_default;
+       }
+     }
+-  }
+ 
+-  function sharedBoundary(c) {
+-    var n = c.length
+-    for(var i=0; i<n; ++i) {
+-      if(!internalVertices[c[i]]) {
+-        return false
++    function has___(key) {
++      var hiddenRecord = getHiddenRecord(key);
++      if (hiddenRecord) {
++        return id in hiddenRecord;
++      } else {
++        return keys.indexOf(key) >= 0;
+       }
+     }
+-    return true
+-  }
+ 
+-  var toVisit = []
+-  var parity = makeArray(numFaces, -1)
+-  for(var i=0; i<numFaces; ++i) {
+-    if(parent[i] === i && !sharedBoundary(faces[i])) {
+-      toVisit.push(i)
+-      parity[i] = 0
+-    } else {
+-      parity[i] = -1
++    function set___(key, value) {
++      var index;
++      var hiddenRecord = getHiddenRecord(key);
++      if (hiddenRecord) {
++        hiddenRecord[id] = value;
++      } else {
++        index = keys.indexOf(key);
++        if (index >= 0) {
++          values[index] = value;
++        } else {
++          // Since some browsers preemptively terminate slow turns but
++          // then continue computing with presumably corrupted heap
++          // state, we here defensively get keys.length first and then
++          // use it to update both the values and keys arrays, keeping
++          // them in sync.
++          index = keys.length;
++          values[index] = value;
++          // If we crash here, values will be one longer than keys.
++          keys[index] = key;
++        }
++      }
++      return this;
+     }
+-  }
+ 
+-  //Using face adjacency, classify faces as in/out
+-  var result = []
+-  while(toVisit.length > 0) {
+-    var top = toVisit.pop()
+-    var nbhd = fadj[top]
+-    uniq(nbhd, function(a,b) {
+-      return a-b
+-    })
+-    var nnbhr = nbhd.length
+-    var p = parity[top]
+-    var polyline
+-    if(p === 0) {
+-      var c = faces[top]
+-      polyline = [c]
+-    }
+-    for(var i=0; i<nnbhr; ++i) {
+-      var f = nbhd[i]
+-      if(parity[f] >= 0) {
+-        continue
+-      }
+-      parity[f] = p^1
+-      toVisit.push(f)
+-      if(p === 0) {
+-        var c = faces[f]
+-        if(!sharedBoundary(c)) {
+-          c.reverse()
+-          polyline.push(c)
++    function delete___(key) {
++      var hiddenRecord = getHiddenRecord(key);
++      var index, lastIndex;
++      if (hiddenRecord) {
++        return id in hiddenRecord && delete hiddenRecord[id];
++      } else {
++        index = keys.indexOf(key);
++        if (index < 0) {
++          return false;
+         }
++        // Since some browsers preemptively terminate slow turns but
++        // then continue computing with potentially corrupted heap
++        // state, we here defensively get keys.length first and then use
++        // it to update both the keys and the values array, keeping
++        // them in sync. We update the two with an order of assignments,
++        // such that any prefix of these assignments will preserve the
++        // key/value correspondence, either before or after the delete.
++        // Note that this needs to work correctly when index === lastIndex.
++        lastIndex = keys.length - 1;
++        keys[index] = void 0;
++        // If we crash here, there's a void 0 in the keys array, but
++        // no operation will cause a "keys.indexOf(void 0)", since
++        // getHiddenRecord(void 0) will always throw an error first.
++        values[index] = values[lastIndex];
++        // If we crash here, values[index] cannot be found here,
++        // because keys[index] is void 0.
++        keys[index] = keys[lastIndex];
++        // If index === lastIndex and we crash here, then keys[index]
++        // is still void 0, since the aliasing killed the previous key.
++        keys.length = lastIndex;
++        // If we crash here, keys will be one shorter than values.
++        values.length = lastIndex;
++        return true;
+       }
+     }
+-    if(p === 0) {
+-      result.push(polyline)
+-    }
+-  }
+ 
+-  return result
+-}
+-},{"./lib/trim-leaves":246,"edges-to-adjacency-list":247,"planar-dual":248,"point-in-big-polygon":257,"robust-sum":228,"two-product":240,"uniq":243}],259:[function(require,module,exports){
+-arguments[4][38][0].apply(exports,arguments)
+-},{"dup":38}],260:[function(require,module,exports){
+-"use strict"; "use restrict";
++    return Object.create(OurWeakMap.prototype, {
++      get___:    { value: constFunc(get___) },
++      has___:    { value: constFunc(has___) },
++      set___:    { value: constFunc(set___) },
++      delete___: { value: constFunc(delete___) }
++    });
++  };
+ 
+-module.exports = UnionFind;
++  OurWeakMap.prototype = Object.create(Object.prototype, {
++    get: {
++      /**
++       * Return the value most recently associated with key, or
++       * opt_default if none.
++       */
++      value: function get(key, opt_default) {
++        return this.get___(key, opt_default);
++      },
++      writable: true,
++      configurable: true
++    },
+ 
+-function UnionFind(count) {
+-  this.roots = new Array(count);
+-  this.ranks = new Array(count);
+-  
+-  for(var i=0; i<count; ++i) {
+-    this.roots[i] = i;
+-    this.ranks[i] = 0;
+-  }
+-}
++    has: {
++      /**
++       * Is there a value associated with key in this WeakMap?
++       */
++      value: function has(key) {
++        return this.has___(key);
++      },
++      writable: true,
++      configurable: true
++    },
+ 
+-UnionFind.prototype.length = function() {
+-  return this.roots.length;
+-}
++    set: {
++      /**
++       * Associate value with key in this WeakMap, overwriting any
++       * previous association if present.
++       */
++      value: function set(key, value) {
++        return this.set___(key, value);
++      },
++      writable: true,
++      configurable: true
++    },
+ 
+-UnionFind.prototype.makeSet = function() {
+-  var n = this.roots.length;
+-  this.roots.push(n);
+-  this.ranks.push(0);
+-  return n;
+-}
++    'delete': {
++      /**
++       * Remove any association for key in this WeakMap, returning
++       * whether there was one.
++       *
++       * <p>Note that the boolean return here does not work like the
++       * {@code delete} operator. The {@code delete} operator returns
++       * whether the deletion succeeds at bringing about a state in
++       * which the deleted property is absent. The {@code delete}
++       * operator therefore returns true if the property was already
++       * absent, whereas this {@code delete} method returns false if
++       * the association was already absent.
++       */
++      value: function remove(key) {
++        return this.delete___(key);
++      },
++      writable: true,
++      configurable: true
++    }
++  });
++
++  if (typeof HostWeakMap === 'function') {
++    (function() {
++      // If we got here, then the platform has a WeakMap but we are concerned
++      // that it may refuse to store some key types. Therefore, make a map
++      // implementation which makes use of both as possible.
++
++      // In this mode we are always using double maps, so we are not proxy-safe.
++      // This combination does not occur in any known browser, but we had best
++      // be safe.
++      if (doubleWeakMapCheckSilentFailure && typeof Proxy !== 'undefined') {
++        Proxy = undefined;
++      }
+ 
+-UnionFind.prototype.find = function(x) {
+-  var roots = this.roots;
+-  while(roots[x] !== x) {
+-    var y = roots[x];
+-    roots[x] = roots[y];
+-    x = y;
+-  }
+-  return x;
+-}
++      function DoubleWeakMap() {
++        if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
++          calledAsFunctionWarning();
++        }
+ 
+-UnionFind.prototype.link = function(x, y) {
+-  var xr = this.find(x)
+-    , yr = this.find(y);
+-  if(xr === yr) {
+-    return;
+-  }
+-  var ranks = this.ranks
+-    , roots = this.roots
+-    , xd    = ranks[xr]
+-    , yd    = ranks[yr];
+-  if(xd < yd) {
+-    roots[xr] = yr;
+-  } else if(yd < xd) {
+-    roots[yr] = xr;
+-  } else {
+-    roots[yr] = xr;
+-    ++ranks[xr];
+-  }
+-}
++        // Preferable, truly weak map.
++        var hmap = new HostWeakMap();
+ 
++        // Our hidden-property-based pseudo-weak-map. Lazily initialized in the
++        // 'set' implementation; thus we can avoid performing extra lookups if
++        // we know all entries actually stored are entered in 'hmap'.
++        var omap = undefined;
+ 
+-},{}],261:[function(require,module,exports){
+-arguments[4][204][0].apply(exports,arguments)
+-},{"bit-twiddle":259,"dup":204,"union-find":260}],262:[function(require,module,exports){
+-"use strict"
++        // Hidden-property maps are not compatible with proxies because proxies
++        // can observe the hidden name and either accidentally expose it or fail
++        // to allow the hidden property to be set. Therefore, we do not allow
++        // arbitrary WeakMaps to switch to using hidden properties, but only
++        // those which need the ability, and unprivileged code is not allowed
++        // to set the flag.
++        //
++        // (Except in doubleWeakMapCheckSilentFailure mode in which case we
++        // disable proxies.)
++        var enableSwitching = false;
+ 
+-module.exports = simplifyPolygon
++        function dget(key, opt_default) {
++          if (omap) {
++            return hmap.has(key) ? hmap.get(key)
++                : omap.get___(key, opt_default);
++          } else {
++            return hmap.get(key, opt_default);
++          }
++        }
+ 
+-var orient = require("robust-orientation")
+-var sc = require("simplicial-complex")
++        function dhas(key) {
++          return hmap.has(key) || (omap ? omap.has___(key) : false);
++        }
+ 
+-function errorWeight(base, a, b) {
+-  var area = Math.abs(orient(base, a, b))
+-  var perim = Math.sqrt(Math.pow(a[0] - b[0], 2) + Math.pow(a[1]-b[1], 2))
+-  return area / perim
+-}
++        var dset;
++        if (doubleWeakMapCheckSilentFailure) {
++          dset = function(key, value) {
++            hmap.set(key, value);
++            if (!hmap.has(key)) {
++              if (!omap) { omap = new OurWeakMap(); }
++              omap.set(key, value);
++            }
++            return this;
++          };
++        } else {
++          dset = function(key, value) {
++            if (enableSwitching) {
++              try {
++                hmap.set(key, value);
++              } catch (e) {
++                if (!omap) { omap = new OurWeakMap(); }
++                omap.set___(key, value);
++              }
++            } else {
++              hmap.set(key, value);
++            }
++            return this;
++          };
++        }
+ 
+-function simplifyPolygon(cells, positions, minArea) {
++        function ddelete(key) {
++          var result = !!hmap['delete'](key);
++          if (omap) { return omap.delete___(key) || result; }
++          return result;
++        }
+ 
+-  var n = positions.length
+-  var nc = cells.length
+-  var inv = new Array(n)
+-  var outv = new Array(n)
+-  var weights = new Array(n)
+-  var dead = new Array(n)
+-  
+-  //Initialize tables
+-  for(var i=0; i<n; ++i) {
+-    inv[i] = outv[i] = -1
+-    weights[i] = Infinity
+-    dead[i] = false
+-  }
++        return Object.create(OurWeakMap.prototype, {
++          get___:    { value: constFunc(dget) },
++          has___:    { value: constFunc(dhas) },
++          set___:    { value: constFunc(dset) },
++          delete___: { value: constFunc(ddelete) },
++          permitHostObjects___: { value: constFunc(function(token) {
++            if (token === weakMapPermitHostObjects) {
++              enableSwitching = true;
++            } else {
++              throw new Error('bogus call to permitHostObjects___');
++            }
++          })}
++        });
++      }
++      DoubleWeakMap.prototype = OurWeakMap.prototype;
++      module.exports = DoubleWeakMap;
+ 
+-  //Compute neighbors
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    if(c.length !== 2) {
+-      throw new Error("Input must be a graph")
+-    }
+-    var s = c[1]
+-    var t = c[0]
+-    if(outv[t] !== -1) {
+-      outv[t] = -2
+-    } else {
+-      outv[t] = s
+-    }
+-    if(inv[s] !== -1) {
+-      inv[s] = -2
+-    } else {
+-      inv[s] = t
+-    }
+-  }
++      // define .constructor to hide OurWeakMap ctor
++      Object.defineProperty(WeakMap.prototype, 'constructor', {
++        value: WeakMap,
++        enumerable: false,  // as default .constructor is
++        configurable: true,
++        writable: true
++      });
++    })();
++  } else {
++    // There is no host WeakMap, so we must use the emulation.
+ 
+-  //Updates the weight for vertex i
+-  function computeWeight(i) {
+-    if(dead[i]) {
+-      return Infinity
+-    }
+-    //TODO: Check that the line segment doesn't cross once simplified
+-    var s = inv[i]
+-    var t = outv[i]
+-    if((s<0) || (t<0)) {
+-      return Infinity
+-    } else {
+-      return errorWeight(positions[i], positions[s], positions[t])
++    // Emulated WeakMaps are incompatible with native proxies (because proxies
++    // can observe the hidden name), so we must disable Proxy usage (in
++    // ArrayLike and Domado, currently).
++    if (typeof Proxy !== 'undefined') {
++      Proxy = undefined;
+     }
+-  }
+ 
+-  //Swaps two nodes on the heap (i,j) are the index of the nodes
+-  function heapSwap(i,j) {
+-    var a = heap[i]
+-    var b = heap[j]
+-    heap[i] = b
+-    heap[j] = a
+-    index[a] = j
+-    index[b] = i
++    module.exports = OurWeakMap;
+   }
++})();
+ 
+-  //Returns the weight of node i on the heap
+-  function heapWeight(i) {
+-    return weights[heap[i]]
+-  }
++},{}],252:[function(require,module,exports){
++var hiddenStore = require('./hidden-store.js');
+ 
+-  function heapParent(i) {
+-    if(i & 1) {
+-      return (i - 1) >> 1
+-    }
+-    return (i >> 1) - 1
+-  }
++module.exports = createStore;
+ 
+-  //Bubble element i down the heap
+-  function heapDown(i) {
+-    var w = heapWeight(i)
+-    while(true) {
+-      var tw = w
+-      var left  = 2*i + 1
+-      var right = 2*(i + 1)
+-      var next = i
+-      if(left < heapCount) {
+-        var lw = heapWeight(left)
+-        if(lw < tw) {
+-          next = left
+-          tw = lw
+-        }
+-      }
+-      if(right < heapCount) {
+-        var rw = heapWeight(right)
+-        if(rw < tw) {
+-          next = right
+-        }
+-      }
+-      if(next === i) {
+-        return i
+-      }
+-      heapSwap(i, next)
+-      i = next      
+-    }
+-  }
++function createStore() {
++    var key = {};
+ 
+-  //Bubbles element i up the heap
+-  function heapUp(i) {
+-    var w = heapWeight(i)
+-    while(i > 0) {
+-      var parent = heapParent(i)
+-      if(parent >= 0) {
+-        var pw = heapWeight(parent)
+-        if(w < pw) {
+-          heapSwap(i, parent)
+-          i = parent
+-          continue
++    return function (obj) {
++        if ((typeof obj !== 'object' || obj === null) &&
++            typeof obj !== 'function'
++        ) {
++            throw new Error('Weakmap-shim: Key must be object')
+         }
+-      }
+-      return i
+-    }
+-  }
+ 
+-  //Pop minimum element
+-  function heapPop() {
+-    if(heapCount > 0) {
+-      var head = heap[0]
+-      heapSwap(0, heapCount-1)
+-      heapCount -= 1
+-      heapDown(0)
+-      return head
+-    }
+-    return -1
+-  }
++        var store = obj.valueOf(key);
++        return store && store.identity === key ?
++            store : hiddenStore(obj, key);
++    };
++}
+ 
+-  //Update heap item i
+-  function heapUpdate(i, w) {
+-    var a = heap[i]
+-    if(weights[a] === w) {
+-      return i
+-    }
+-    weights[a] = -Infinity
+-    heapUp(i)
+-    heapPop()
+-    weights[a] = w
+-    heapCount += 1
+-    return heapUp(heapCount-1)
+-  }
++},{"./hidden-store.js":253}],253:[function(require,module,exports){
++module.exports = hiddenStore;
+ 
+-  //Kills a vertex (assume vertex already removed from heap)
+-  function kill(i) {
+-    if(dead[i]) {
+-      return
+-    }
+-    //Kill vertex
+-    dead[i] = true
+-    //Fixup topology
+-    var s = inv[i]
+-    var t = outv[i]
+-    if(inv[t] >= 0) {
+-      inv[t] = s
+-    }
+-    if(outv[s] >= 0) {
+-      outv[s] = t
+-    }
++function hiddenStore(obj, key) {
++    var store = { identity: key };
++    var valueOf = obj.valueOf;
+ 
+-    //Update weights on s and t
+-    if(index[s] >= 0) {
+-      heapUpdate(index[s], computeWeight(s))
+-    }
+-    if(index[t] >= 0) {
+-      heapUpdate(index[t], computeWeight(t))
+-    }
+-  }
++    Object.defineProperty(obj, "valueOf", {
++        value: function (value) {
++            return value !== key ?
++                valueOf.apply(this, arguments) : store;
++        },
++        writable: true
++    });
+ 
+-  //Initialize weights and heap
+-  var heap = []
+-  var index = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    var w = weights[i] = computeWeight(i)
+-    if(w < Infinity) {
+-      index[i] = heap.length
+-      heap.push(i)
+-    } else {
+-      index[i] = -1
+-    }
+-  }
+-  var heapCount = heap.length
+-  for(var i=heapCount>>1; i>=0; --i) {
+-    heapDown(i)
+-  }
+-  
+-  //Kill vertices
+-  while(true) {
+-    var hmin = heapPop()
+-    if((hmin < 0) || (weights[hmin] > minArea)) {
+-      break
+-    }
+-    kill(hmin)
+-  }
++    return store;
++}
+ 
+-  //Build collapsed vertex table
+-  var npositions = []
+-  for(var i=0; i<n; ++i) {
+-    if(!dead[i]) {
+-      index[i] = npositions.length
+-      npositions.push(positions[i].slice())
+-    }
+-  }
+-  var nv = npositions.length
++},{}],254:[function(require,module,exports){
++// Original - @Gozola. 
++// https://gist.github.com/Gozala/1269991
++// This is a reimplemented version (with a few bug fixes).
+ 
+-  function tortoiseHare(seq, start) {
+-    if(seq[start] < 0) {
+-      return start
+-    }
+-    var t = start
+-    var h = start
+-    do {
+-      //Walk two steps with h
+-      var nh = seq[h]
+-      if(!dead[h] || nh < 0 || nh === h) {
+-        break
+-      }
+-      h = nh
+-      nh = seq[h]
+-      if(!dead[h] || nh < 0 || nh === h) {
+-        break
+-      }
+-      h = nh
++var createStore = require('./create-store.js');
+ 
+-      //Walk one step with t
+-      t = seq[t]
+-    } while(t !== h)
+-    //Compress cycles
+-    for(var v=start; v!==h; v = seq[v]) {
+-      seq[v] = h
+-    }
+-    return h
+-  }
++module.exports = weakMap;
+ 
+-  var ncells = []
+-  cells.forEach(function(c) {
+-    var tin = tortoiseHare(inv, c[0])
+-    var tout = tortoiseHare(outv, c[1])
+-    if(tin >= 0 && tout >= 0 && tin !== tout) {
+-      var cin = index[tin]
+-      var cout = index[tout]
+-      if(cin !== cout) {
+-        ncells.push([ cin, cout ])
+-      }
++function weakMap() {
++    var privates = createStore();
++
++    return {
++        'get': function (key, fallback) {
++            var store = privates(key)
++            return store.hasOwnProperty('value') ?
++                store.value : fallback
++        },
++        'set': function (key, value) {
++            privates(key).value = value;
++        },
++        'has': function(key) {
++            return 'value' in privates(key);
++        },
++        'delete': function (key) {
++            return delete privates(key).value;
++        }
+     }
+-  })
++}
+ 
+-  //Normalize result
+-  sc.unique(sc.normalize(ncells))
++},{"./create-store.js":252}],255:[function(require,module,exports){
++module.exports = require('cwise-compiler')({
++    args: ['array', {
++        offset: [1],
++        array: 0
++    }, 'scalar', 'scalar', 'index'],
++    pre: {
++        "body": "{}",
++        "args": [],
++        "thisVars": [],
++        "localVars": []
++    },
++    post: {
++        "body": "{}",
++        "args": [],
++        "thisVars": [],
++        "localVars": []
++    },
++    body: {
++        "body": "{\n        var _inline_1_da = _inline_1_arg0_ - _inline_1_arg3_\n        var _inline_1_db = _inline_1_arg1_ - _inline_1_arg3_\n        if((_inline_1_da >= 0) !== (_inline_1_db >= 0)) {\n          _inline_1_arg2_.push(_inline_1_arg4_[0] + 0.5 + 0.5 * (_inline_1_da + _inline_1_db) / (_inline_1_da - _inline_1_db))\n        }\n      }",
++        "args": [{
++            "name": "_inline_1_arg0_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg1_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg2_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg3_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 2
++        }, {
++            "name": "_inline_1_arg4_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }],
++        "thisVars": [],
++        "localVars": ["_inline_1_da", "_inline_1_db"]
++    },
++    funcName: 'zeroCrossings'
++})
+ 
+-  //Return final list of cells
+-  return {
+-    positions: npositions,
+-    edges: ncells
+-  }
++},{"cwise-compiler":70}],256:[function(require,module,exports){
++"use strict"
++
++module.exports = findZeroCrossings
++
++var core = require("./lib/zc-core")
++
++function findZeroCrossings(array, level) {
++  var cross = []
++  level = +level || 0.0
++  core(array.hi(array.shape[0]-1), cross, level)
++  return cross
+ }
+-},{"robust-orientation":225,"simplicial-complex":261}],263:[function(require,module,exports){
++},{"./lib/zc-core":255}],257:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45899,7 +46673,7 @@ module.exports = [
+     }
+ ];
+ 
+-},{}],264:[function(require,module,exports){
++},{}],258:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46092,7 +46866,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":344,"../../plots/cartesian/constants":375,"../../plots/font_attributes":388,"./arrow_paths":263}],265:[function(require,module,exports){
++},{"../../lib/extend":338,"../../plots/cartesian/constants":369,"../../plots/font_attributes":382,"./arrow_paths":257}],259:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47101,7 +47875,7 @@ function lineIntersect(x1, y1, x2, y2, x3, y3, x4, y4) {
+     return {x: x1 + a * t, y: y1 + d * t};
+ }
+ 
+-},{"../../lib":347,"../../lib/setcursor":356,"../../lib/svg_text_utils":360,"../../plotly":367,"../../plots/cartesian/axes":370,"../color":267,"../dragelement":288,"../drawing":290,"./arrow_paths":263,"./attributes":264,"d3":100,"fast-isnumeric":104}],266:[function(require,module,exports){
++},{"../../lib":341,"../../lib/setcursor":350,"../../lib/svg_text_utils":354,"../../plotly":361,"../../plots/cartesian/axes":364,"../color":261,"../dragelement":282,"../drawing":284,"./arrow_paths":257,"./attributes":258,"d3":74,"fast-isnumeric":82}],260:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47141,7 +47915,7 @@ exports.borderLine = '#BEC8D9';
+ // gives back exactly lightLine if the other colors are defaults.
+ exports.lightFraction = 100 * (0xe - 0x4) / (0xf - 0x4);
+ 
+-},{}],267:[function(require,module,exports){
++},{}],261:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47295,7 +48069,7 @@ function cleanOne(val) {
+     return 'rgb(' + rgbStr + ')';
+ }
+ 
+-},{"./attributes":266,"fast-isnumeric":104,"tinycolor2":239}],268:[function(require,module,exports){
++},{"./attributes":260,"fast-isnumeric":82,"tinycolor2":240}],262:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47450,7 +48224,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":344,"../../plots/cartesian/layout_attributes":379,"../../plots/font_attributes":388}],269:[function(require,module,exports){
++},{"../../lib/extend":338,"../../plots/cartesian/layout_attributes":373,"../../plots/font_attributes":382}],263:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47517,7 +48291,7 @@ module.exports = function colorbarDefaults(containerIn, containerOut, layout) {
+     coerce('titleside');
+ };
+ 
+-},{"../../lib":347,"../../plots/cartesian/tick_label_defaults":385,"../../plots/cartesian/tick_mark_defaults":386,"../../plots/cartesian/tick_value_defaults":387,"./attributes":268}],270:[function(require,module,exports){
++},{"../../lib":341,"../../plots/cartesian/tick_label_defaults":379,"../../plots/cartesian/tick_mark_defaults":380,"../../plots/cartesian/tick_value_defaults":381,"./attributes":262}],264:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48147,7 +48921,7 @@ module.exports = function draw(gd, id) {
+     return component;
+ };
+ 
+-},{"../../lib":347,"../../lib/extend":344,"../../lib/setcursor":356,"../../plotly":367,"../../plots/cartesian/axes":370,"../../plots/cartesian/axis_defaults":371,"../../plots/cartesian/layout_attributes":379,"../../plots/cartesian/position_defaults":382,"../../plots/plots":403,"../color":267,"../dragelement":288,"../drawing":290,"../titles":330,"./attributes":268,"d3":100,"tinycolor2":239}],271:[function(require,module,exports){
++},{"../../lib":341,"../../lib/extend":338,"../../lib/setcursor":350,"../../plotly":361,"../../plots/cartesian/axes":364,"../../plots/cartesian/axis_defaults":365,"../../plots/cartesian/layout_attributes":373,"../../plots/cartesian/position_defaults":376,"../../plots/plots":397,"../color":261,"../dragelement":282,"../drawing":284,"../titles":324,"./attributes":262,"d3":74,"tinycolor2":240}],265:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48166,7 +48940,7 @@ module.exports = function hasColorbar(container) {
+     return Lib.isPlainObject(container.colorbar);
+ };
+ 
+-},{"../../lib":347}],272:[function(require,module,exports){
++},{"../../lib":341}],266:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48187,7 +48961,7 @@ exports.draw = require('./draw');
+ 
+ exports.hasColorbar = require('./has_colorbar');
+ 
+-},{"./attributes":268,"./defaults":269,"./draw":270,"./has_colorbar":271}],273:[function(require,module,exports){
++},{"./attributes":262,"./defaults":263,"./draw":264,"./has_colorbar":265}],267:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48242,7 +49016,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],274:[function(require,module,exports){
++},{}],268:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48308,7 +49082,7 @@ module.exports = function calc(trace, vals, containerStr, cLetter) {
+     }
+ };
+ 
+-},{"../../lib":347,"./flip_scale":278,"./scales":285}],275:[function(require,module,exports){
++},{"../../lib":341,"./flip_scale":272,"./scales":279}],269:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48352,7 +49126,7 @@ module.exports = function makeColorScaleAttributes(context) {
+     };
+ };
+ 
+-},{"../../lib/extend":344,"./attributes":273,"./scales.js":285}],276:[function(require,module,exports){
++},{"../../lib/extend":338,"./attributes":267,"./scales.js":279}],270:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48368,7 +49142,7 @@ var scales = require('./scales');
+ 
+ module.exports = scales.RdBu;
+ 
+-},{"./scales":285}],277:[function(require,module,exports){
++},{"./scales":279}],271:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48432,7 +49206,7 @@ module.exports = function colorScaleDefaults(traceIn, traceOut, layout, coerce,
+     if(showScale) colorbarDefaults(containerIn, containerOut, layout);
+ };
+ 
+-},{"../../lib":347,"../colorbar/defaults":269,"../colorbar/has_colorbar":271,"./flip_scale":278,"./is_valid_scale":282,"fast-isnumeric":104}],278:[function(require,module,exports){
++},{"../../lib":341,"../colorbar/defaults":263,"../colorbar/has_colorbar":265,"./flip_scale":272,"./is_valid_scale":276,"fast-isnumeric":82}],272:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48457,7 +49231,7 @@ module.exports = function flipScale(scl) {
+     return sclNew;
+ };
+ 
+-},{}],279:[function(require,module,exports){
++},{}],273:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48497,7 +49271,7 @@ module.exports = function getScale(scl, dflt) {
+     return scl;
+ };
+ 
+-},{"./default_scale":276,"./is_valid_scale_array":283,"./scales":285}],280:[function(require,module,exports){
++},{"./default_scale":270,"./is_valid_scale_array":277,"./scales":279}],274:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48543,7 +49317,7 @@ module.exports = function hasColorscale(trace, containerStr) {
+     );
+ };
+ 
+-},{"../../lib":347,"./is_valid_scale":282,"fast-isnumeric":104}],281:[function(require,module,exports){
++},{"../../lib":341,"./is_valid_scale":276,"fast-isnumeric":82}],275:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48575,7 +49349,7 @@ exports.flipScale = require('./flip_scale');
+ 
+ exports.makeScaleFunction = require('./make_scale_function');
+ 
+-},{"./attributes":273,"./calc":274,"./default_scale":276,"./defaults":277,"./flip_scale":278,"./get_scale":279,"./has_colorscale":280,"./is_valid_scale":282,"./make_scale_function":284,"./scales":285}],282:[function(require,module,exports){
++},{"./attributes":267,"./calc":268,"./default_scale":270,"./defaults":271,"./flip_scale":272,"./get_scale":273,"./has_colorscale":274,"./is_valid_scale":276,"./make_scale_function":278,"./scales":279}],276:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48596,7 +49370,7 @@ module.exports = function isValidScale(scl) {
+     else return isValidScaleArray(scl);
+ };
+ 
+-},{"./is_valid_scale_array":283,"./scales":285}],283:[function(require,module,exports){
++},{"./is_valid_scale_array":277,"./scales":279}],277:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48633,7 +49407,7 @@ module.exports = function isValidScaleArray(scl) {
+     return true;
+ };
+ 
+-},{"tinycolor2":239}],284:[function(require,module,exports){
++},{"tinycolor2":240}],278:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48682,7 +49456,7 @@ module.exports = function makeScaleFunction(scl, cmin, cmax) {
+     };
+ };
+ 
+-},{"../../lib":347,"../color":267,"d3":100,"fast-isnumeric":104,"tinycolor2":239}],285:[function(require,module,exports){
++},{"../../lib":341,"../color":261,"d3":74,"fast-isnumeric":82,"tinycolor2":240}],279:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48813,7 +49587,7 @@ module.exports = {
+     ]
+ };
+ 
+-},{}],286:[function(require,module,exports){
++},{}],280:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48846,7 +49620,7 @@ module.exports = function align(v, dv, v0, v1, anchor) {
+     return vc;
+ };
+ 
+-},{}],287:[function(require,module,exports){
++},{}],281:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48884,7 +49658,7 @@ module.exports = function getCursor(x, y, xanchor, yanchor) {
+     return cursorset[y][x];
+ };
+ 
+-},{"../../lib":347}],288:[function(require,module,exports){
++},{"../../lib":341}],282:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49069,7 +49843,7 @@ function finishDrag(gd) {
+     if(gd._replotPending) Plotly.plot(gd);
+ }
+ 
+-},{"../../lib":347,"../../plotly":367,"../../plots/cartesian/constants":375,"./align":286,"./cursor":287,"./unhover":289}],289:[function(require,module,exports){
++},{"../../lib":341,"../../plotly":361,"../../plots/cartesian/constants":369,"./align":280,"./cursor":281,"./unhover":283}],283:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49120,7 +49894,7 @@ unhover.raw = function unhoverRaw(gd, evt) {
+     gd._hoverdata = undefined;
+ };
+ 
+-},{"../../lib/events":343}],290:[function(require,module,exports){
++},{"../../lib/events":337}],284:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49684,7 +50458,7 @@ drawing.setClipUrl = function(s, localId) {
+     s.attr('clip-path', 'url(' + url + ')');
+ };
+ 
+-},{"../../constants/xmlns_namespaces":338,"../../lib":347,"../../lib/svg_text_utils":360,"../../plots/plots":403,"../../traces/scatter/make_bubble_size_func":438,"../../traces/scatter/subtypes":443,"../color":267,"../colorscale":281,"./symbol_defs":291,"d3":100,"fast-isnumeric":104}],291:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":332,"../../lib":341,"../../lib/svg_text_utils":354,"../../plots/plots":397,"../../traces/scatter/make_bubble_size_func":432,"../../traces/scatter/subtypes":437,"../color":261,"../colorscale":275,"./symbol_defs":285,"d3":74,"fast-isnumeric":82}],285:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50160,7 +50934,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"d3":100}],292:[function(require,module,exports){
++},{"d3":74}],286:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50259,7 +51033,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],293:[function(require,module,exports){
++},{}],287:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50322,7 +51096,7 @@ function calcOneAxis(calcTrace, trace, axis, coord) {
+     Axes.expand(axis, vals, {padded: true});
+ }
+ 
+-},{"../../plots/cartesian/axes":370,"../../plots/plots":403,"./compute_error":294,"fast-isnumeric":104}],294:[function(require,module,exports){
++},{"../../plots/cartesian/axes":364,"../../plots/plots":397,"./compute_error":288,"fast-isnumeric":82}],288:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50418,7 +51192,7 @@ function makeComputeErrorValue(type, value) {
+     }
+ }
+ 
+-},{}],295:[function(require,module,exports){
++},{}],289:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50495,7 +51269,7 @@ module.exports = function(traceIn, traceOut, defaultColor, opts) {
+     }
+ };
+ 
+-},{"../../lib":347,"../../plots/plots":403,"./attributes":292,"fast-isnumeric":104}],296:[function(require,module,exports){
++},{"../../lib":341,"../../plots/plots":397,"./attributes":286,"fast-isnumeric":82}],290:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50554,7 +51328,7 @@ errorBars.hoverInfo = function(calcPoint, trace, hoverPoint) {
+     }
+ };
+ 
+-},{"./attributes":292,"./calc":293,"./defaults":295,"./plot":297,"./style":298}],297:[function(require,module,exports){
++},{"./attributes":286,"./calc":287,"./defaults":289,"./plot":291,"./style":292}],291:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50675,7 +51449,7 @@ function errorCoords(d, xa, ya) {
+     return out;
+ }
+ 
+-},{"../../lib":347,"../../traces/scatter/subtypes":443,"d3":100,"fast-isnumeric":104}],298:[function(require,module,exports){
++},{"../../lib":341,"../../traces/scatter/subtypes":437,"d3":74,"fast-isnumeric":82}],292:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50712,7 +51486,7 @@ module.exports = function style(traces) {
+     });
+ };
+ 
+-},{"../color":267,"d3":100}],299:[function(require,module,exports){
++},{"../color":261,"d3":74}],293:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50827,7 +51601,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../plots/cartesian/constants":375}],300:[function(require,module,exports){
++},{"../../plots/cartesian/constants":369}],294:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50893,7 +51667,7 @@ function imageDefaults(imageIn, imageOut, fullLayout) {
+     return imageOut;
+ }
+ 
+-},{"../../lib":347,"../../plots/cartesian/axes":370,"./attributes":299}],301:[function(require,module,exports){
++},{"../../lib":341,"../../plots/cartesian/axes":364,"./attributes":293}],295:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51066,7 +51840,7 @@ module.exports = function draw(gd) {
+     imagesAbove.each(applyAttributes);
+ };
+ 
+-},{"../../plots/cartesian/axes":370,"../drawing":290,"d3":100}],302:[function(require,module,exports){
++},{"../../plots/cartesian/axes":364,"../drawing":284,"d3":74}],296:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51089,7 +51863,7 @@ module.exports = {
+     supplyLayoutDefaults: supplyLayoutDefaults
+ };
+ 
+-},{"./attributes":299,"./defaults":300,"./draw":301}],303:[function(require,module,exports){
++},{"./attributes":293,"./defaults":294,"./draw":295}],297:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51138,7 +51912,7 @@ exports.isMiddleAnchor = function isMiddleAnchor(opts) {
+     );
+ };
+ 
+-},{}],304:[function(require,module,exports){
++},{}],298:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51183,6 +51957,13 @@ module.exports = {
+         
+         
+     },
++    horizontalspacing: {
++        valType: 'enumerated',
++        values: ['column', 'wrapped'],
++        dflt: ['column'],
++        
++        
++    },
+     traceorder: {
+         valType: 'flaglist',
+         flags: ['reversed', 'grouped'],
+@@ -51229,7 +52010,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":344,"../../plots/font_attributes":388,"../color/attributes":266}],305:[function(require,module,exports){
++},{"../../lib/extend":338,"../../plots/font_attributes":382,"../color/attributes":260}],299:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51247,7 +52028,7 @@ module.exports = {
+     scrollBarMargin: 4
+ };
+ 
+-},{}],306:[function(require,module,exports){
++},{}],300:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51272,6 +52053,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+ 
+     var visibleTraces = 0,
+         defaultOrder = 'normal',
++        defaultHorizontalSpacing = 'column',
+         defaultX,
+         defaultY,
+         defaultXAnchor,
+@@ -51336,10 +52118,11 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+     coerce('xanchor', defaultXAnchor);
+     coerce('y', defaultY);
+     coerce('yanchor', defaultYAnchor);
++    coerce('horizontalspacing', defaultHorizontalSpacing);
+     Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
+ };
+ 
+-},{"../../lib":347,"../../plots/plots":403,"./attributes":304,"./helpers":309}],307:[function(require,module,exports){
++},{"../../lib":341,"../../plots/plots":397,"./attributes":298,"./helpers":303}],301:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51816,7 +52599,8 @@ function computeLegendDimensions(gd, groups, traces) {
+     var fullLayout = gd._fullLayout,
+         opts = fullLayout.legend,
+         borderwidth = opts.borderwidth,
+-        isGrouped = helpers.isGrouped(opts);
++        isGrouped = helpers.isGrouped(opts),
++        isHorizontalColumn = helpers.isHorizontalColumn(opts);
+ 
+     if(helpers.isVertical(opts)) {
+         if(isGrouped) {
+@@ -51923,7 +52707,7 @@ function computeLegendDimensions(gd, groups, traces) {
+         traces.each(function(d) {
+ 
+             var legendItem = d[0],
+-                traceWidth = maxTraceWidth,
++                traceWidth = isHorizontalColumn ? maxTraceWidth : 40 + d[0],
+                 traceGap = opts.tracegroupgap || 5;
+ 
+             if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
+@@ -52012,7 +52796,7 @@ function expandHorizontalMargin(gd) {
+     });
+ }
+ 
+-},{"../../lib":347,"../../plotly":367,"../../plots/plots":403,"../color":267,"../dragelement":288,"../drawing":290,"./anchor_utils":303,"./constants":305,"./get_legend_data":308,"./helpers":309,"./style":311,"d3":100}],308:[function(require,module,exports){
++},{"../../lib":341,"../../plotly":361,"../../plots/plots":397,"../color":261,"../dragelement":282,"../drawing":284,"./anchor_utils":297,"./constants":299,"./get_legend_data":302,"./helpers":303,"./style":305,"d3":74}],302:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -52118,7 +52902,7 @@ module.exports = function getLegendData(calcdata, opts) {
+     return legendData;
+ };
+ 
+-},{"../../plots/plots":403,"./helpers":309}],309:[function(require,module,exports){
++},{"../../plots/plots":397,"./helpers":303}],303:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -52149,7 +52933,10 @@ exports.isReversed = function isReversed(legendLayout) {
+     return (legendLayout.traceorder || '').indexOf('reversed') !== -1;
+ };
+ 
+-},{"../../plots/plots":403}],310:[function(require,module,exports){
++exports.isHorizontalColumn = function isReversed(legendLayout) {
++    return legendLayout.horizontalspacing === 'column';
++};
++},{"../../plots/plots":397}],304:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -52172,7 +52959,7 @@ legend.draw = require('./draw');
+ 
+ legend.style = require('./style');
+ 
+-},{"./attributes":304,"./defaults":306,"./draw":307,"./style":311}],311:[function(require,module,exports){
++},{"./attributes":298,"./defaults":300,"./draw":301,"./style":305}],305:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -52394,7 +53181,7 @@ function stylePies(d) {
+     if(pts.size()) pts.call(stylePie, d[0], trace);
+ }
+ 
+-},{"../../lib":347,"../../plots/plots":403,"../../traces/pie/style_one":422,"../../traces/scatter/subtypes":443,"../color":267,"../drawing":290,"d3":100}],312:[function(require,module,exports){
++},{"../../lib":341,"../../plots/plots":397,"../../traces/pie/style_one":416,"../../traces/scatter/subtypes":437,"../color":261,"../drawing":284,"d3":74}],306:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -52902,7 +53689,7 @@ modeBarButtons.resetViews = {
+     }
+ };
+ 
+-},{"../../../build/ploticon":2,"../../lib":347,"../../plotly":367,"../../snapshot/download":411}],313:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":341,"../../plotly":361,"../../snapshot/download":405}],307:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53192,7 +53979,7 @@ function createModeBar(gd, buttons) {
+ 
+ module.exports = createModeBar;
+ 
+-},{"../../../build/ploticon":2,"../../lib":347,"d3":100}],314:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":341,"d3":74}],308:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53420,7 +54207,7 @@ function fillCustomButton(customButtons) {
+     return customButtons;
+ }
+ 
+-},{"../../plotly":367,"../../traces/scatter/subtypes":443,"./":313,"./buttons":312}],315:[function(require,module,exports){
++},{"../../plotly":361,"../../traces/scatter/subtypes":437,"./":307,"./buttons":306}],309:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53509,7 +54296,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":344,"../../plots/font_attributes":388,"../color/attributes":266,"./button_attributes":316}],316:[function(require,module,exports){
++},{"../../lib/extend":338,"../../plots/font_attributes":382,"../color/attributes":260,"./button_attributes":310}],310:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53550,7 +54337,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],317:[function(require,module,exports){
++},{}],311:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53579,7 +54366,7 @@ module.exports = {
+     darkAmount: 10
+ };
+ 
+-},{}],318:[function(require,module,exports){
++},{}],312:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53671,7 +54458,7 @@ function getPosDflt(containerOut, layout, counterAxes) {
+     return [containerOut.domain[0], posY + constants.yPad];
+ }
+ 
+-},{"../../lib":347,"../color":267,"./attributes":315,"./button_attributes":316,"./constants":317}],319:[function(require,module,exports){
++},{"../../lib":341,"../color":261,"./attributes":309,"./button_attributes":310,"./constants":311}],313:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53946,7 +54733,7 @@ function reposition(gd, buttons, opts, axName) {
+     });
+ }
+ 
+-},{"../../lib/svg_text_utils":360,"../../plotly":367,"../../plots/cartesian/axis_ids":372,"../../plots/plots":403,"../color":267,"../drawing":290,"../legend/anchor_utils":303,"./constants":317,"./get_update_object":320,"d3":100}],320:[function(require,module,exports){
++},{"../../lib/svg_text_utils":354,"../../plotly":361,"../../plots/cartesian/axis_ids":366,"../../plots/plots":397,"../color":261,"../drawing":284,"../legend/anchor_utils":297,"./constants":311,"./get_update_object":314,"d3":74}],314:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54004,7 +54791,7 @@ function getXRange(axisLayout, buttonLayout) {
+     return [range0, range1];
+ }
+ 
+-},{"d3":100}],321:[function(require,module,exports){
++},{"d3":74}],315:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54022,7 +54809,7 @@ exports.supplyLayoutDefaults = require('./defaults');
+ 
+ exports.draw = require('./draw');
+ 
+-},{"./attributes":315,"./defaults":318,"./draw":319}],322:[function(require,module,exports){
++},{"./attributes":309,"./defaults":312,"./draw":313}],316:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54080,7 +54867,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../color/attributes":266}],323:[function(require,module,exports){
++},{"../color/attributes":260}],317:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54376,7 +55163,7 @@ module.exports = function createSlider(gd) {
+         });
+ };
+ 
+-},{"../../constants/xmlns_namespaces":338,"../../lib":347,"../../plotly":367,"../../plots/cartesian/axes":370,"./helpers":325,"./range_plot":327}],324:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":332,"../../lib":341,"../../plotly":361,"../../plots/cartesian/axes":364,"./helpers":319,"./range_plot":321}],318:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54429,7 +55216,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, axName, coun
+     }
+ };
+ 
+-},{"../../lib":347,"./attributes":322}],325:[function(require,module,exports){
++},{"../../lib":341,"./attributes":316}],319:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54455,7 +55242,7 @@ exports.appendChildren = function appendChildren(el, children) {
+     }
+ };
+ 
+-},{}],326:[function(require,module,exports){
++},{}],320:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54512,7 +55299,7 @@ function draw(gd) {
+     });
+ }
+ 
+-},{"../../plots/plots":403,"./create_slider":323,"./defaults":324}],327:[function(require,module,exports){
++},{"../../plots/plots":397,"./create_slider":317,"./defaults":318}],321:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54693,7 +55480,7 @@ function makeScatter(trace, pointPairs, w, h) {
+     return [line, markers, fill];
+ }
+ 
+-},{"../../constants/xmlns_namespaces":338,"../../lib":347,"../drawing":290,"../drawing/symbol_defs":291,"./helpers":325,"d3":100}],328:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":332,"../../lib":341,"../drawing":284,"../drawing/symbol_defs":285,"./helpers":319,"d3":74}],322:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54784,7 +55571,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":344,"../../traces/scatter/attributes":424,"../annotations/attributes":264}],329:[function(require,module,exports){
++},{"../../lib/extend":338,"../../traces/scatter/attributes":418,"../annotations/attributes":258}],323:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -55574,7 +56361,7 @@ function shapeBounds(ax, v0, v1, path, paramsToUse) {
+     if(max >= min) return [min, max];
+ }
+ 
+-},{"../../lib":347,"../../lib/setcursor":356,"../../plotly":367,"../../plots/cartesian/axes":370,"../color":267,"../dragelement":288,"../drawing":290,"./attributes":328,"fast-isnumeric":104}],330:[function(require,module,exports){
++},{"../../lib":341,"../../lib/setcursor":350,"../../plotly":361,"../../plots/cartesian/axes":364,"../color":261,"../dragelement":282,"../drawing":284,"./attributes":322,"fast-isnumeric":82}],324:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -55804,7 +56591,7 @@ Titles.draw = function(gd, titleClass, options) {
+     el.classed('js-placeholder', isplaceholder);
+ };
+ 
+-},{"../../lib":347,"../../lib/svg_text_utils":360,"../../plotly":367,"../../plots/plots":403,"../color":267,"../drawing":290,"d3":100,"fast-isnumeric":104}],331:[function(require,module,exports){
++},{"../../lib":341,"../../lib/svg_text_utils":354,"../../plotly":361,"../../plots/plots":397,"../color":261,"../drawing":284,"d3":74,"fast-isnumeric":82}],325:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -55922,7 +56709,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":344,"../../plots/font_attributes":388,"../color/attributes":266}],332:[function(require,module,exports){
++},{"../../lib/extend":338,"../../plots/font_attributes":382,"../color/attributes":260}],326:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -55997,7 +56784,7 @@ module.exports = {
+     hoverColor: '#F4FAFF'
+ };
+ 
+-},{}],333:[function(require,module,exports){
++},{}],327:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56093,7 +56880,7 @@ function buttonsDefaults(menuIn, menuOut) {
+     return buttonsOut;
+ }
+ 
+-},{"../../lib":347,"./attributes":331,"./constants":332}],334:[function(require,module,exports){
++},{"../../lib":341,"./attributes":325,"./constants":326}],328:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56552,7 +57339,7 @@ function clearPushMargins(gd) {
+     }
+ }
+ 
+-},{"../../lib":347,"../../lib/svg_text_utils":360,"../../plotly":367,"../../plots/plots":403,"../color":267,"../drawing":290,"../legend/anchor_utils":303,"./constants":332,"d3":100}],335:[function(require,module,exports){
++},{"../../lib":341,"../../lib/svg_text_utils":354,"../../plotly":361,"../../plots/plots":397,"../color":261,"../drawing":284,"../legend/anchor_utils":297,"./constants":326,"d3":74}],329:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56570,7 +57357,7 @@ exports.supplyLayoutDefaults = require('./defaults');
+ 
+ exports.draw = require('./draw');
+ 
+-},{"./attributes":331,"./defaults":333,"./draw":334}],336:[function(require,module,exports){
++},{"./attributes":325,"./defaults":327,"./draw":328}],330:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56591,7 +57378,7 @@ module.exports = {
+     longdashdot: [[0.5, 0.7, 0.8, 1], 10]
+ };
+ 
+-},{}],337:[function(require,module,exports){
++},{}],331:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56614,7 +57401,7 @@ module.exports = {
+     x: '❌'
+ };
+ 
+-},{}],338:[function(require,module,exports){
++},{}],332:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56638,7 +57425,7 @@ exports.svgAttrs = {
+     'xmlns:xlink': exports.xlink
+ };
+ 
+-},{}],339:[function(require,module,exports){
++},{}],333:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56689,7 +57476,7 @@ exports.Queue = Plotly.Queue;
+ // export d3 used in the bundle
+ exports.d3 = require('d3');
+ 
+-},{"../build/ploticon":2,"./plot_api/set_plot_config":364,"./plot_api/to_image":365,"./plot_api/validate":366,"./plotly":367,"./snapshot/download":411,"d3":100}],340:[function(require,module,exports){
++},{"../build/ploticon":2,"./plot_api/set_plot_config":358,"./plot_api/to_image":359,"./plot_api/validate":360,"./plotly":361,"./snapshot/download":405,"d3":74}],334:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56722,7 +57509,7 @@ if(typeof MathJax !== 'undefined') {
+     exports.MathJax = false;
+ }
+ 
+-},{}],341:[function(require,module,exports){
++},{}],335:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -57032,7 +57819,7 @@ exports.validate = function(value, opts) {
+     return out !== failed;
+ };
+ 
+-},{"../components/colorscale/get_scale":279,"../components/colorscale/scales":285,"./nested_property":351,"fast-isnumeric":104,"tinycolor2":239}],342:[function(require,module,exports){
++},{"../components/colorscale/get_scale":273,"../components/colorscale/scales":279,"./nested_property":345,"fast-isnumeric":82,"tinycolor2":240}],336:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -57371,7 +58158,7 @@ exports.parseDate = function(v) {
+     return out;
+ };
+ 
+-},{"../lib":347,"d3":100,"fast-isnumeric":104}],343:[function(require,module,exports){
++},{"../lib":341,"d3":74,"fast-isnumeric":82}],337:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -57505,7 +58292,7 @@ var Events = {
+ 
+ module.exports = Events;
+ 
+-},{"events":43}],344:[function(require,module,exports){
++},{"events":80}],338:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -57619,7 +58406,7 @@ function _extend(inputs, isDeep, keepAllKeys, noArrayCopies) {
+     return target;
+ }
+ 
+-},{"./is_plain_object.js":348}],345:[function(require,module,exports){
++},{"./is_plain_object.js":342}],339:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -57698,7 +58485,7 @@ function formatColor(containerIn, opacityIn, len) {
+ 
+ module.exports = formatColor;
+ 
+-},{"../components/color/attributes":266,"../components/colorscale/make_scale_function":284,"./str2rgbarray":359,"fast-isnumeric":104,"tinycolor2":239}],346:[function(require,module,exports){
++},{"../components/color/attributes":260,"../components/colorscale/make_scale_function":278,"./str2rgbarray":353,"fast-isnumeric":82,"tinycolor2":240}],340:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -57772,7 +58559,7 @@ function convertHTMLToUnicode(html) {
+ 
+ module.exports = convertHTMLToUnicode;
+ 
+-},{"superscript-text":229}],347:[function(require,module,exports){
++},{"superscript-text":238}],341:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -58392,7 +59179,7 @@ lib.numSeparate = function(value, separators) {
+     return x1 + x2;
+ };
+ 
+-},{"./coerce":341,"./dates":342,"./extend":344,"./is_plain_object":348,"./loggers":349,"./matrix":350,"./nested_property":351,"./notifier":352,"./search":355,"./stats":358,"d3":100}],348:[function(require,module,exports){
++},{"./coerce":335,"./dates":336,"./extend":338,"./is_plain_object":342,"./loggers":343,"./matrix":344,"./nested_property":345,"./notifier":346,"./search":349,"./stats":352,"d3":74}],342:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -58421,7 +59208,7 @@ module.exports = function isPlainObject(obj) {
+     );
+ };
+ 
+-},{}],349:[function(require,module,exports){
++},{}],343:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -58488,7 +59275,7 @@ loggers.error = function() {
+ };
+ /* eslint-enable no-console */
+ 
+-},{"../plot_api/plot_config":362}],350:[function(require,module,exports){
++},{"../plot_api/plot_config":356}],344:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -58598,7 +59385,7 @@ exports.apply2DTransform2 = function(transform) {
+     };
+ };
+ 
+-},{}],351:[function(require,module,exports){
++},{}],345:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -58854,7 +59641,7 @@ function badContainer(container, propStr, propParts) {
+     };
+ }
+ 
+-},{"fast-isnumeric":104}],352:[function(require,module,exports){
++},{"fast-isnumeric":82}],346:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -58931,7 +59718,7 @@ module.exports = function(text, displayLength) {
+         });
+ };
+ 
+-},{"d3":100,"fast-isnumeric":104}],353:[function(require,module,exports){
++},{"d3":74,"fast-isnumeric":82}],347:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -59171,7 +59958,7 @@ polygon.filter = function filter(pts, tolerance) {
+     };
+ };
+ 
+-},{"./matrix":350}],354:[function(require,module,exports){
++},{"./matrix":344}],348:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -59382,7 +60169,7 @@ queue.plotDo = function(gd, func, args) {
+ 
+ module.exports = queue;
+ 
+-},{"../lib":347,"../plot_api/plot_config":362}],355:[function(require,module,exports){
++},{"../lib":341,"../plot_api/plot_config":356}],349:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -59494,7 +60281,7 @@ exports.roundUp = function(val, arrayIn, reverse) {
+     return arrayIn[low];
+ };
+ 
+-},{"../lib":347,"fast-isnumeric":104}],356:[function(require,module,exports){
++},{"../lib":341,"fast-isnumeric":82}],350:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -59517,7 +60304,7 @@ module.exports = function setCursor(el3, csr) {
+     if(csr) el3.classed('cursor-' + csr, true);
+ };
+ 
+-},{}],357:[function(require,module,exports){
++},{}],351:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -59566,7 +60353,7 @@ module.exports = function showWebGlMsg(scene) {
+     return false;
+ };
+ 
+-},{"../components/color":267}],358:[function(require,module,exports){
++},{"../components/color":261}],352:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -59662,7 +60449,7 @@ exports.interp = function(arr, n) {
+     return frac * arr[Math.ceil(n)] + (1 - frac) * arr[Math.floor(n)];
+ };
+ 
+-},{"fast-isnumeric":104}],359:[function(require,module,exports){
++},{"fast-isnumeric":82}],353:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -59684,7 +60471,7 @@ function str2RgbaArray(color) {
+ 
+ module.exports = str2RgbaArray;
+ 
+-},{"arraytools":37,"tinycolor2":239}],360:[function(require,module,exports){
++},{"arraytools":15,"tinycolor2":240}],354:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -60185,7 +60972,7 @@ util.makeEditable = function(context, _delegate, options) {
+     return d3.rebind(this, dispatch, 'on');
+ };
+ 
+-},{"../constants/xmlns_namespaces":338,"../lib":347,"../plotly":367,"d3":100}],361:[function(require,module,exports){
++},{"../constants/xmlns_namespaces":332,"../lib":341,"../plotly":361,"d3":74}],355:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -63300,7 +64087,7 @@ function drawMainTitle(gd) {
+     });
+ }
+ 
+-},{"../components/color":267,"../components/drawing":290,"../components/errorbars":296,"../components/images":302,"../components/legend":310,"../components/modebar/manage":314,"../components/rangeselector":321,"../components/rangeslider":326,"../components/shapes":329,"../components/titles":330,"../components/updatemenus":335,"../constants/xmlns_namespaces":338,"../lib":347,"../lib/events":343,"../lib/queue":354,"../plotly":367,"../plots/cartesian/graph_interact":377,"../plots/plots":403,"d3":100,"fast-isnumeric":104,"gl-mat4/fromQuat":117}],362:[function(require,module,exports){
++},{"../components/color":261,"../components/drawing":284,"../components/errorbars":290,"../components/images":296,"../components/legend":304,"../components/modebar/manage":308,"../components/rangeselector":315,"../components/rangeslider":320,"../components/shapes":323,"../components/titles":324,"../components/updatemenus":329,"../constants/xmlns_namespaces":332,"../lib":341,"../lib/events":337,"../lib/queue":348,"../plotly":361,"../plots/cartesian/graph_interact":371,"../plots/plots":397,"d3":74,"fast-isnumeric":82,"gl-mat4/fromQuat":108}],356:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -63409,7 +64196,7 @@ function defaultSetBackground(gd, bgColor) {
+     catch(e) { Lib.error(e); }
+ }
+ 
+-},{"../lib":347}],363:[function(require,module,exports){
++},{"../lib":341}],357:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -63749,7 +64536,7 @@ function handleLinkedToArray(layoutAttributes) {
+     PlotSchema.crawl(layoutAttributes, callback);
+ }
+ 
+-},{"../lib":347,"../plotly":367,"../plots/plots":403,"../plots/polar/area_attributes":404,"../plots/polar/axis_attributes":405}],364:[function(require,module,exports){
++},{"../lib":341,"../plotly":361,"../plots/plots":397,"../plots/polar/area_attributes":398,"../plots/polar/axis_attributes":399}],358:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -63775,7 +64562,7 @@ module.exports = function setPlotConfig(configObj) {
+     return Lib.extendFlat(Plotly.defaultConfig, configObj);
+ };
+ 
+-},{"../lib":347,"../plotly":367}],365:[function(require,module,exports){
++},{"../lib":341,"../plotly":361}],359:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -63888,7 +64675,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":347,"../plotly":367,"../snapshot":413,"fast-isnumeric":104}],366:[function(require,module,exports){
++},{"../lib":341,"../plotly":361,"../snapshot":407,"fast-isnumeric":82}],360:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64258,7 +65045,7 @@ function convertPathToAttributeString(path) {
+     return astr;
+ }
+ 
+-},{"../lib":347,"../plots/plots":403,"./plot_schema":363}],367:[function(require,module,exports){
++},{"../lib":341,"../plots/plots":397,"./plot_schema":357}],361:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64376,7 +65163,7 @@ exports.PlotSchema = require('./plot_api/plot_schema');
+ // imaging routines
+ exports.Snapshot = require('./snapshot');
+ 
+-},{"../build/plotcss":1,"./components/annotations":265,"./components/color":267,"./components/colorbar":272,"./components/colorscale":281,"./components/drawing":290,"./components/errorbars":296,"./components/images":302,"./components/legend":310,"./components/modebar":313,"./components/shapes":329,"./components/updatemenus":335,"./fonts/mathjax_config":340,"./lib":347,"./lib/queue":354,"./lib/svg_text_utils":360,"./plot_api/plot_api":361,"./plot_api/plot_config":362,"./plot_api/plot_schema":363,"./plots/cartesian/axes":370,"./plots/cartesian/graph_interact":377,"./plots/plots":403,"./plots/polar/micropolar":406,"./snapshot":413,"./traces/scatter":434,"es6-promise":103}],368:[function(require,module,exports){
++},{"../build/plotcss":1,"./components/annotations":259,"./components/color":261,"./components/colorbar":266,"./components/colorscale":275,"./components/drawing":284,"./components/errorbars":290,"./components/images":296,"./components/legend":304,"./components/modebar":307,"./components/shapes":323,"./components/updatemenus":329,"./fonts/mathjax_config":334,"./lib":341,"./lib/queue":348,"./lib/svg_text_utils":354,"./plot_api/plot_api":355,"./plot_api/plot_config":356,"./plot_api/plot_schema":357,"./plots/cartesian/axes":364,"./plots/cartesian/graph_interact":371,"./plots/plots":397,"./plots/polar/micropolar":400,"./snapshot":407,"./traces/scatter":428,"es6-promise":79}],362:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64457,7 +65244,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],369:[function(require,module,exports){
++},{}],363:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64484,7 +65271,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],370:[function(require,module,exports){
++},{}],364:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64659,14 +65446,27 @@ axes.getAutoRange = function(ax) {
+     }
+ 
+     if(minmin === maxmax) {
+-        newRange = axReverse ?
+-            [minmin + 1, ax.rangemode !== 'normal' ? 0 : minmin - 1] :
+-            [ax.rangemode !== 'normal' ? 0 : minmin - 1, minmin + 1];
++        var lower = minmin - 1;
++        var upper = minmin + 1;
++        if(ax.rangemode === 'tozero') {
++            newRange = minmin < 0 ? [lower, 0] : [0, upper];
++        }
++        else if(ax.rangemode === 'nonnegative') {
++            newRange = [Math.max(0, lower), Math.max(0, upper)];
++        }
++        else {
++            newRange = [lower, upper];
++        }
+     }
+     else if(mbest) {
+         if(ax.type === 'linear' || ax.type === '-') {
+-            if(ax.rangemode === 'tozero' && minbest.val >= 0) {
+-                minbest = {val: 0, pad: 0};
++            if(ax.rangemode === 'tozero') {
++                if(minbest.val >= 0) {
++                    minbest = {val: 0, pad: 0};
++                }
++                if(maxbest.val <= 0) {
++                    maxbest = {val: 0, pad: 0};
++                }
+             }
+             else if(ax.rangemode === 'nonnegative') {
+                 if(minbest.val - mbest * minbest.pad < 0) {
+@@ -64680,22 +65480,39 @@ axes.getAutoRange = function(ax) {
+             // in case it changed again...
+             mbest = (maxbest.val - minbest.val) /
+                 (ax._length - minbest.pad - maxbest.pad);
++
+         }
+ 
+         newRange = [
+             minbest.val - mbest * minbest.pad,
+             maxbest.val + mbest * maxbest.pad
+         ];
++    }
+ 
+-        // don't let axis have zero size
+-        if(newRange[0] === newRange[1]) {
++    // don't let axis have zero size, while still respecting tozero and nonnegative
++    if(newRange[0] === newRange[1]) {
++        if(ax.rangemode === 'tozero') {
++            if(newRange[0] < 0) {
++                newRange = [newRange[0], 0];
++            }
++            else if(newRange[0] > 0) {
++                newRange = [0, newRange[0]];
++            }
++            else {
++                newRange = [0, 1];
++            }
++        }
++        else {
+             newRange = [newRange[0] - 1, newRange[0] + 1];
++            if(ax.rangemode === 'nonnegative') {
++                newRange[0] = Math.max(0, newRange[0]);
++            }
+         }
++    }
+ 
+-        // maintain reversal
+-        if(axReverse) {
+-            newRange.reverse();
+-        }
++    // maintain reversal
++    if(axReverse) {
++        newRange.reverse();
+     }
+ 
+     return newRange;
+@@ -66478,7 +67295,7 @@ function swapAxisAttrs(layout, key, xFullAxes, yFullAxes) {
+ // rather than built-in % which gives a negative value for negative v
+ function mod(v, d) { return ((v % d) + d) % d; }
+ 
+-},{"../../components/color":267,"../../components/drawing":290,"../../components/titles":330,"../../lib":347,"../../lib/svg_text_utils":360,"../../plotly":367,"./axis_ids":372,"./layout_attributes":379,"./layout_defaults":380,"./set_convert":384,"d3":100,"fast-isnumeric":104}],371:[function(require,module,exports){
++},{"../../components/color":261,"../../components/drawing":284,"../../components/titles":324,"../../lib":341,"../../lib/svg_text_utils":354,"../../plotly":361,"./axis_ids":366,"./layout_attributes":373,"./layout_defaults":374,"./set_convert":378,"d3":74,"fast-isnumeric":82}],365:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66761,7 +67578,7 @@ function category(a) {
+     return curvecats > curvenums * 2;
+ }
+ 
+-},{"../../components/color/attributes":266,"../../lib":347,"../plots":403,"./axis_ids":372,"./category_order_defaults":373,"./clean_datum":374,"./layout_attributes":379,"./ordered_categories":381,"./set_convert":384,"./tick_label_defaults":385,"./tick_mark_defaults":386,"./tick_value_defaults":387,"fast-isnumeric":104,"tinycolor2":239}],372:[function(require,module,exports){
++},{"../../components/color/attributes":260,"../../lib":341,"../plots":397,"./axis_ids":366,"./category_order_defaults":367,"./clean_datum":368,"./layout_attributes":373,"./ordered_categories":375,"./set_convert":378,"./tick_label_defaults":379,"./tick_mark_defaults":380,"./tick_value_defaults":381,"fast-isnumeric":82,"tinycolor2":240}],366:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66882,7 +67699,7 @@ exports.getFromTrace = function(gd, fullTrace, type) {
+     return ax;
+ };
+ 
+-},{"../../lib":347,"../plots":403,"./constants":375}],373:[function(require,module,exports){
++},{"../../lib":341,"../plots":397,"./constants":369}],367:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66916,7 +67733,7 @@ module.exports = function handleCategoryOrderDefaults(containerIn, containerOut,
+     }
+ };
+ 
+-},{}],374:[function(require,module,exports){
++},{}],368:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66955,7 +67772,7 @@ module.exports = function cleanDatum(c) {
+     return c;
+ };
+ 
+-},{"../../lib":347,"fast-isnumeric":104}],375:[function(require,module,exports){
++},{"../../lib":341,"fast-isnumeric":82}],369:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67033,7 +67850,7 @@ module.exports = {
+     REDRAWDELAY: 50
+ };
+ 
+-},{}],376:[function(require,module,exports){
++},{}],370:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67722,7 +68539,7 @@ function isSelectOrLasso(dragmode) {
+     return modes.indexOf(dragmode) !== -1;
+ }
+ 
+-},{"../../components/color":267,"../../components/dragelement":288,"../../components/drawing":290,"../../lib":347,"../../lib/setcursor":356,"../../lib/svg_text_utils":360,"../../plotly":367,"./axes":370,"./constants":375,"./select":383,"d3":100,"tinycolor2":239}],377:[function(require,module,exports){
++},{"../../components/color":261,"../../components/dragelement":282,"../../components/drawing":284,"../../lib":341,"../../lib/setcursor":350,"../../lib/svg_text_utils":354,"../../plotly":361,"./axes":364,"./constants":369,"./select":377,"d3":74,"tinycolor2":240}],371:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -69064,7 +69881,7 @@ fx.inbox = function(v0, v1) {
+     return Infinity;
+ };
+ 
+-},{"../../components/color":267,"../../components/dragelement":288,"../../components/drawing":290,"../../lib":347,"../../lib/events":343,"../../lib/svg_text_utils":360,"./axes":370,"./constants":375,"./dragbox":376,"d3":100,"fast-isnumeric":104,"tinycolor2":239}],378:[function(require,module,exports){
++},{"../../components/color":261,"../../components/dragelement":282,"../../components/drawing":284,"../../lib":341,"../../lib/events":337,"../../lib/svg_text_utils":354,"./axes":364,"./constants":369,"./dragbox":370,"d3":74,"fast-isnumeric":82,"tinycolor2":240}],372:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -69151,7 +69968,7 @@ exports.plot = function(gd) {
+     }
+ };
+ 
+-},{"../plots":403,"./attributes":369,"./constants":375}],379:[function(require,module,exports){
++},{"../plots":397,"./attributes":363,"./constants":369}],373:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -69496,7 +70313,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/color/attributes":266,"../../components/rangeselector/attributes":315,"../../components/rangeslider/attributes":322,"../../lib/extend":344,"../font_attributes":388,"./constants":375}],380:[function(require,module,exports){
++},{"../../components/color/attributes":260,"../../components/rangeselector/attributes":309,"../../components/rangeslider/attributes":316,"../../lib/extend":338,"../font_attributes":382,"./constants":369}],374:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -69669,7 +70486,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
+     });
+ };
+ 
+-},{"../../components/color":267,"../../components/rangeselector":321,"../../components/rangeslider":326,"../../lib":347,"../plots":403,"./axis_defaults":371,"./axis_ids":372,"./constants":375,"./layout_attributes":379,"./position_defaults":382}],381:[function(require,module,exports){
++},{"../../components/color":261,"../../components/rangeselector":315,"../../components/rangeslider":320,"../../lib":341,"../plots":397,"./axis_defaults":365,"./axis_ids":366,"./constants":369,"./layout_attributes":373,"./position_defaults":376}],375:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -69748,7 +70565,7 @@ module.exports = function orderedCategories(axisLetter, categoryorder, categorya
+     }
+ };
+ 
+-},{"d3":100}],382:[function(require,module,exports){
++},{"d3":74}],376:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -69813,7 +70630,7 @@ module.exports = function handlePositionDefaults(containerIn, containerOut, coer
+     return containerOut;
+ };
+ 
+-},{"../../lib":347,"fast-isnumeric":104}],383:[function(require,module,exports){
++},{"../../lib":341,"fast-isnumeric":82}],377:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70013,7 +70830,7 @@ module.exports = function prepSelect(e, startX, startY, dragOptions, mode) {
+     };
+ };
+ 
+-},{"../../components/color":267,"../../lib/polygon":353,"./axes":370,"./constants":375}],384:[function(require,module,exports){
++},{"../../components/color":261,"../../lib/polygon":347,"./axes":364,"./constants":369}],378:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70257,7 +71074,7 @@ module.exports = function setConvert(ax) {
+     ax._forceTick0 = null;
+ };
+ 
+-},{"../../lib":347,"./axis_ids":372,"./clean_datum":374,"./constants":375,"d3":100,"fast-isnumeric":104}],385:[function(require,module,exports){
++},{"../../lib":341,"./axis_ids":366,"./clean_datum":368,"./constants":369,"d3":74,"fast-isnumeric":82}],379:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70340,7 +71157,7 @@ function getShowAttrDflt(containerIn) {
+     }
+ }
+ 
+-},{"../../lib":347}],386:[function(require,module,exports){
++},{"../../lib":341}],380:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70373,7 +71190,7 @@ module.exports = function handleTickDefaults(containerIn, containerOut, coerce,
+     }
+ };
+ 
+-},{"../../lib":347,"./layout_attributes":379}],387:[function(require,module,exports){
++},{"../../lib":341,"./layout_attributes":373}],381:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70414,7 +71231,7 @@ module.exports = function handleTickValueDefaults(containerIn, containerOut, coe
+     }
+ };
+ 
+-},{"fast-isnumeric":104}],388:[function(require,module,exports){
++},{"fast-isnumeric":82}],382:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70445,7 +71262,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],389:[function(require,module,exports){
++},{}],383:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70688,7 +71505,7 @@ function createCamera(element, options) {
+     return camera;
+ }
+ 
+-},{"3d-view":27,"mouse-change":207,"mouse-wheel":211,"right-now":221}],390:[function(require,module,exports){
++},{"3d-view":9,"mouse-change":177,"mouse-wheel":179,"right-now":213}],384:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70822,7 +71639,7 @@ function initAxes(gd, sceneLayout) {
+     }
+ }
+ 
+-},{"../../constants/xmlns_namespaces":338,"../plots":403,"./layout/attributes":391,"./layout/defaults":395,"./layout/layout_attributes":396,"./scene":400,"./set_convert":401}],391:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":332,"../plots":397,"./layout/attributes":385,"./layout/defaults":389,"./layout/layout_attributes":390,"./scene":394,"./set_convert":395}],385:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70843,7 +71660,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],392:[function(require,module,exports){
++},{}],386:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70949,7 +71766,7 @@ module.exports = {
+     zerolinewidth: axesAttrs.zerolinewidth
+ };
+ 
+-},{"../../../components/color":267,"../../../lib/extend":344,"../../cartesian/layout_attributes":379}],393:[function(require,module,exports){
++},{"../../../components/color":261,"../../../lib/extend":338,"../../cartesian/layout_attributes":373}],387:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -71018,7 +71835,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, options) {
+     }
+ };
+ 
+-},{"../../../lib":347,"../../cartesian/axis_defaults":371,"./axis_attributes":392,"tinycolor2":239}],394:[function(require,module,exports){
++},{"../../../lib":341,"../../cartesian/axis_defaults":365,"./axis_attributes":386,"tinycolor2":240}],388:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -71174,7 +71991,7 @@ function createAxesOptions(plotlyOptions) {
+ 
+ module.exports = createAxesOptions;
+ 
+-},{"../../../lib/html2unicode":346,"../../../lib/str2rgbarray":359,"arraytools":37}],395:[function(require,module,exports){
++},{"../../../lib/html2unicode":340,"../../../lib/str2rgbarray":353,"arraytools":15}],389:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -71281,7 +72098,7 @@ function handleGl3dDefaults(sceneLayoutIn, sceneLayoutOut, coerce, opts) {
+     coerce('hovermode', opts.getDfltFromLayout('hovermode'));
+ }
+ 
+-},{"../../../components/color":267,"../../subplot_defaults":409,"./axis_defaults":393,"./layout_attributes":396}],396:[function(require,module,exports){
++},{"../../../components/color":261,"../../subplot_defaults":403,"./axis_defaults":387,"./layout_attributes":390}],390:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -71409,7 +72226,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../../lib/extend":344,"./axis_attributes":392}],397:[function(require,module,exports){
++},{"../../../lib/extend":338,"./axis_attributes":386}],391:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -71455,7 +72272,7 @@ function createSpikeOptions(layout) {
+ 
+ module.exports = createSpikeOptions;
+ 
+-},{"../../../lib/str2rgbarray":359}],398:[function(require,module,exports){
++},{"../../../lib/str2rgbarray":353}],392:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -71550,7 +72367,7 @@ function computeTickMarks(scene) {
+     scene.contourLevels = contourLevelsFromTicks(ticks);
+ }
+ 
+-},{"../../../lib/html2unicode":346,"../../../plotly":367}],399:[function(require,module,exports){
++},{"../../../lib/html2unicode":340,"../../../plotly":361}],393:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -71584,7 +72401,7 @@ function project(camera, v) {
+ 
+ module.exports = project;
+ 
+-},{}],400:[function(require,module,exports){
++},{}],394:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72314,7 +73131,7 @@ proto.toImage = function(format) {
+ 
+ module.exports = Scene;
+ 
+-},{"../../lib":347,"../../lib/show_no_webgl_msg":357,"../../lib/str2rgbarray":359,"../../plots/cartesian/axes":370,"../../plots/cartesian/graph_interact":377,"../../plots/plots":403,"./camera":389,"./layout/convert":394,"./layout/spikes":397,"./layout/tick_marks":398,"./project":399,"./set_convert":401,"gl-plot3d":159}],401:[function(require,module,exports){
++},{"../../lib":341,"../../lib/show_no_webgl_msg":351,"../../lib/str2rgbarray":353,"../../plots/cartesian/axes":364,"../../plots/cartesian/graph_interact":371,"../../plots/plots":397,"./camera":383,"./layout/convert":388,"./layout/spikes":391,"./layout/tick_marks":392,"./project":393,"./set_convert":395,"gl-plot3d":127}],395:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72336,7 +73153,7 @@ module.exports = function setConvert(containerOut) {
+     containerOut.setScale = noop;
+ };
+ 
+-},{"../cartesian/axes":370}],402:[function(require,module,exports){
++},{"../cartesian/axes":364}],396:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72501,7 +73318,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../components/color/attributes":266,"../plotly":367,"./font_attributes":388}],403:[function(require,module,exports){
++},{"../components/color/attributes":260,"../plotly":361,"./font_attributes":382}],397:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73692,7 +74509,7 @@ plots.graphJson = function(gd, dataonly, mode, output, useDefaults) {
+     return (output === 'object') ? obj : JSON.stringify(obj);
+ };
+ 
+-},{"../components/color":267,"../lib":347,"../plotly":367,"./attributes":368,"./font_attributes":388,"./layout_attributes":402,"d3":100,"fast-isnumeric":104}],404:[function(require,module,exports){
++},{"../components/color":261,"../lib":341,"../plotly":361,"./attributes":362,"./font_attributes":382,"./layout_attributes":396,"d3":74,"fast-isnumeric":82}],398:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73717,7 +74534,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../traces/scatter/attributes":424}],405:[function(require,module,exports){
++},{"../../traces/scatter/attributes":418}],399:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73832,7 +74649,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":344,"../cartesian/layout_attributes":379}],406:[function(require,module,exports){
++},{"../../lib/extend":338,"../cartesian/layout_attributes":373}],400:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75255,7 +76072,7 @@ var extendDeepAll = Plotly.Lib.extendDeepAll;
+     return exports;
+ };
+ 
+-},{"../../plotly":367,"./micropolar_manager":407,"d3":100}],407:[function(require,module,exports){
++},{"../../plotly":361,"./micropolar_manager":401,"d3":74}],401:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75338,7 +76155,7 @@ manager.fillLayout = function(_gd) {
+     _gd._fullLayout = extendDeepAll(dflts, _gd.layout);
+ };
+ 
+-},{"../../plotly":367,"./undo_manager":408,"d3":100}],408:[function(require,module,exports){
++},{"../../plotly":361,"./undo_manager":402,"d3":74}],402:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75404,7 +76221,7 @@ module.exports = function UndoManager() {
+     };
+ };
+ 
+-},{}],409:[function(require,module,exports){
++},{}],403:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75479,7 +76296,7 @@ module.exports = function handleSubplotDefaults(layoutIn, layoutOut, fullData, o
+     }
+ };
+ 
+-},{"../lib":347,"./plots":403}],410:[function(require,module,exports){
++},{"../lib":341,"./plots":397}],404:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75635,7 +76452,7 @@ module.exports = function clonePlot(graphObj, options) {
+     return plotTile;
+ };
+ 
+-},{"../plotly":367}],411:[function(require,module,exports){
++},{"../plotly":361}],405:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75701,7 +76518,7 @@ function downloadImage(gd, opts) {
+ 
+ module.exports = downloadImage;
+ 
+-},{"../lib":347,"../plot_api/to_image":365,"./filesaver":412}],412:[function(require,module,exports){
++},{"../lib":341,"../plot_api/to_image":359,"./filesaver":406}],406:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75769,7 +76586,7 @@ var fileSaver = function(url, name) {
+ 
+ module.exports = fileSaver;
+ 
+-},{}],413:[function(require,module,exports){
++},{}],407:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75814,7 +76631,7 @@ var Snapshot = {
+ 
+ module.exports = Snapshot;
+ 
+-},{"./cloneplot":410,"./download":411,"./svgtoimg":414,"./toimage":415,"./tosvg":416}],414:[function(require,module,exports){
++},{"./cloneplot":404,"./download":405,"./svgtoimg":408,"./toimage":409,"./tosvg":410}],408:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75945,7 +76762,7 @@ function svgToImg(opts) {
+ 
+ module.exports = svgToImg;
+ 
+-},{"../lib":347,"events":43}],415:[function(require,module,exports){
++},{"../lib":341,"events":80}],409:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -76024,7 +76841,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":347,"../plotly":367,"events":43}],416:[function(require,module,exports){
++},{"../lib":341,"../plotly":361,"events":80}],410:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -76136,7 +76953,7 @@ module.exports = function toSVG(gd, format) {
+     return s;
+ };
+ 
+-},{"../components/color":267,"../components/drawing":290,"../constants/xmlns_namespaces":338,"../lib/svg_text_utils":360,"d3":100}],417:[function(require,module,exports){
++},{"../components/color":261,"../components/drawing":284,"../constants/xmlns_namespaces":332,"../lib/svg_text_utils":354,"d3":74}],411:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -76182,7 +76999,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(trace.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":270,"../../components/colorscale/get_scale":279,"../../lib":347,"../../plots/plots":403,"d3":100,"fast-isnumeric":104}],418:[function(require,module,exports){
++},{"../../components/colorbar/draw":264,"../../components/colorscale/get_scale":273,"../../lib":341,"../../plots/plots":397,"d3":74,"fast-isnumeric":82}],412:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -76316,7 +77133,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/attributes":273,"../../lib/extend":344,"../surface/attributes":452}],419:[function(require,module,exports){
++},{"../../components/colorscale/attributes":267,"../../lib/extend":338,"../surface/attributes":446}],413:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -76478,7 +77295,7 @@ function createMesh3DTrace(scene, data) {
+ 
+ module.exports = createMesh3DTrace;
+ 
+-},{"../../lib/str2rgbarray":359,"alpha-shape":28,"convex-hull":90,"delaunay-triangulate":101,"gl-mesh3d":133,"tinycolor2":239}],420:[function(require,module,exports){
++},{"../../lib/str2rgbarray":353,"alpha-shape":14,"convex-hull":65,"delaunay-triangulate":75,"gl-mesh3d":125,"tinycolor2":240}],414:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -76575,7 +77392,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     }
+ };
+ 
+-},{"../../components/colorbar/defaults":269,"../../lib":347,"./attributes":418}],421:[function(require,module,exports){
++},{"../../components/colorbar/defaults":263,"../../lib":341,"./attributes":412}],415:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -76604,7 +77421,7 @@ Mesh3D.meta = {
+ 
+ module.exports = Mesh3D;
+ 
+-},{"../../plots/gl3d":390,"../heatmap/colorbar":417,"./attributes":418,"./convert":419,"./defaults":420}],422:[function(require,module,exports){
++},{"../../plots/gl3d":384,"../heatmap/colorbar":411,"./attributes":412,"./convert":413,"./defaults":414}],416:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -76631,7 +77448,7 @@ module.exports = function styleOne(s, pt, trace) {
+     .call(Color.stroke, lineColor);
+ };
+ 
+-},{"../../components/color":267}],423:[function(require,module,exports){
++},{"../../components/color":261}],417:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -76669,7 +77486,7 @@ module.exports = function arraysToCalcdata(cd) {
+     }
+ };
+ 
+-},{"../../lib":347}],424:[function(require,module,exports){
++},{"../../lib":341}],418:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -76919,7 +77736,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":275,"../../components/drawing":290,"../../lib/extend":344,"./constants":429}],425:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":269,"../../components/drawing":284,"../../lib/extend":338,"./constants":423}],419:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77046,7 +77863,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":347,"../../plots/cartesian/axes":370,"./colorscale_calc":428,"./subtypes":443,"fast-isnumeric":104}],426:[function(require,module,exports){
++},{"../../lib":341,"../../plots/cartesian/axes":364,"./colorscale_calc":422,"./subtypes":437,"fast-isnumeric":82}],420:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77087,7 +77904,7 @@ module.exports = function cleanData(fullData) {
+     }
+ };
+ 
+-},{}],427:[function(require,module,exports){
++},{}],421:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77140,7 +77957,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(marker.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":270,"../../components/colorscale/get_scale":279,"../../lib":347,"../../plots/plots":403,"d3":100,"fast-isnumeric":104}],428:[function(require,module,exports){
++},{"../../components/colorbar/draw":264,"../../components/colorscale/get_scale":273,"../../lib":341,"../../plots/plots":397,"d3":74,"fast-isnumeric":82}],422:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77173,7 +77990,7 @@ module.exports = function calcMarkerColorscale(trace) {
+     }
+ };
+ 
+-},{"../../components/colorscale/calc":274,"../../components/colorscale/has_colorscale":280,"./subtypes":443}],429:[function(require,module,exports){
++},{"../../components/colorscale/calc":268,"../../components/colorscale/has_colorscale":274,"./subtypes":437}],423:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77189,7 +78006,7 @@ module.exports = {
+     PTS_LINESONLY: 20
+ };
+ 
+-},{}],430:[function(require,module,exports){
++},{}],424:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77267,7 +78084,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'y'});
+ };
+ 
+-},{"../../components/errorbars/defaults":295,"../../lib":347,"./attributes":424,"./constants":429,"./fillcolor_defaults":431,"./line_defaults":435,"./line_shape_defaults":437,"./marker_defaults":439,"./subtypes":443,"./text_defaults":444,"./xy_defaults":445}],431:[function(require,module,exports){
++},{"../../components/errorbars/defaults":289,"../../lib":341,"./attributes":418,"./constants":423,"./fillcolor_defaults":425,"./line_defaults":429,"./line_shape_defaults":431,"./marker_defaults":433,"./subtypes":437,"./text_defaults":438,"./xy_defaults":439}],425:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77306,7 +78123,7 @@ module.exports = function fillColorDefaults(traceIn, traceOut, defaultColor, coe
+     ));
+ };
+ 
+-},{"../../components/color":267}],432:[function(require,module,exports){
++},{"../../components/color":261}],426:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77359,7 +78176,7 @@ module.exports = function getTraceColor(trace, di) {
+     }
+ };
+ 
+-},{"../../components/color":267,"./subtypes":443}],433:[function(require,module,exports){
++},{"../../components/color":261,"./subtypes":437}],427:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77528,7 +78345,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     }
+ };
+ 
+-},{"../../components/color":267,"../../components/errorbars":296,"../../lib":347,"../../plots/cartesian/constants":375,"../../plots/cartesian/graph_interact":377,"./get_trace_color":432}],434:[function(require,module,exports){
++},{"../../components/color":261,"../../components/errorbars":290,"../../lib":341,"../../plots/cartesian/constants":369,"../../plots/cartesian/graph_interact":371,"./get_trace_color":426}],428:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77571,7 +78388,7 @@ Scatter.meta = {
+ 
+ module.exports = Scatter;
+ 
+-},{"../../plots/cartesian":378,"./arrays_to_calcdata":423,"./attributes":424,"./calc":425,"./clean_data":426,"./colorbar":427,"./defaults":430,"./hover":433,"./plot":440,"./select":441,"./style":442,"./subtypes":443}],435:[function(require,module,exports){
++},{"../../plots/cartesian":372,"./arrays_to_calcdata":417,"./attributes":418,"./calc":419,"./clean_data":420,"./colorbar":421,"./defaults":424,"./hover":427,"./plot":434,"./select":435,"./style":436,"./subtypes":437}],429:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77604,7 +78421,7 @@ module.exports = function lineDefaults(traceIn, traceOut, defaultColor, layout,
+     coerce('line.dash');
+ };
+ 
+-},{"../../components/colorscale/defaults":277,"../../components/colorscale/has_colorscale":280}],436:[function(require,module,exports){
++},{"../../components/colorscale/defaults":271,"../../components/colorscale/has_colorscale":274}],430:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77773,7 +78590,7 @@ module.exports = function linePoints(d, opts) {
+     return segments;
+ };
+ 
+-},{"../../plots/cartesian/axes":370}],437:[function(require,module,exports){
++},{"../../plots/cartesian/axes":364}],431:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77792,7 +78609,7 @@ module.exports = function handleLineShapeDefaults(traceIn, traceOut, coerce) {
+     if(shape === 'spline') coerce('line.smoothing');
+ };
+ 
+-},{}],438:[function(require,module,exports){
++},{}],432:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77834,7 +78651,7 @@ module.exports = function makeBubbleSizeFn(trace) {
+     };
+ };
+ 
+-},{"fast-isnumeric":104}],439:[function(require,module,exports){
++},{"fast-isnumeric":82}],433:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -77894,7 +78711,7 @@ module.exports = function markerDefaults(traceIn, traceOut, defaultColor, layout
+     }
+ };
+ 
+-},{"../../components/color":267,"../../components/colorscale/defaults":277,"../../components/colorscale/has_colorscale":280,"./subtypes":443}],440:[function(require,module,exports){
++},{"../../components/color":261,"../../components/colorscale/defaults":271,"../../components/colorscale/has_colorscale":274,"./subtypes":437}],434:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -78187,7 +79004,7 @@ function selectMarkers(gd, plotinfo, cdscatter) {
+     });
+ }
+ 
+-},{"../../components/drawing":290,"../../components/errorbars":296,"../../lib":347,"../../lib/polygon":353,"./arrays_to_calcdata":423,"./line_points":436,"./subtypes":443,"d3":100}],441:[function(require,module,exports){
++},{"../../components/drawing":284,"../../components/errorbars":290,"../../lib":341,"../../lib/polygon":347,"./arrays_to_calcdata":417,"./line_points":430,"./subtypes":437,"d3":74}],435:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -78258,7 +79075,7 @@ module.exports = function selectPoints(searchInfo, polygon) {
+     return selection;
+ };
+ 
+-},{"./subtypes":443}],442:[function(require,module,exports){
++},{"./subtypes":437}],436:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -78300,7 +79117,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/drawing":290,"../../components/errorbars":296,"d3":100}],443:[function(require,module,exports){
++},{"../../components/drawing":284,"../../components/errorbars":290,"d3":74}],437:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -78336,7 +79153,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib":347}],444:[function(require,module,exports){
++},{"../../lib":341}],438:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -78357,7 +79174,7 @@ module.exports = function(traceIn, traceOut, layout, coerce) {
+     Lib.coerceFont(coerce, 'textfont', layout.font);
+ };
+ 
+-},{"../../lib":347}],445:[function(require,module,exports){
++},{"../../lib":341}],439:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -78402,7 +79219,7 @@ module.exports = function handleXYDefaults(traceIn, traceOut, coerce) {
+     return len;
+ };
+ 
+-},{}],446:[function(require,module,exports){
++},{}],440:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -78533,7 +79350,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":275,"../../constants/gl_markers":337,"../../lib/extend":344,"../scatter/attributes":424}],447:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":269,"../../constants/gl_markers":331,"../../lib/extend":338,"../scatter/attributes":418}],441:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -78562,7 +79379,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../scatter/arrays_to_calcdata":423,"../scatter/colorscale_calc":428}],448:[function(require,module,exports){
++},{"../scatter/arrays_to_calcdata":417,"../scatter/colorscale_calc":422}],442:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -78633,7 +79450,7 @@ function calculateErrors(data, scaleFactor) {
+ 
+ module.exports = calculateErrors;
+ 
+-},{"../../components/errorbars/compute_error":294}],449:[function(require,module,exports){
++},{"../../components/errorbars/compute_error":288}],443:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -79092,7 +79909,7 @@ function createLineWithMarkers(scene, data) {
+ 
+ module.exports = createLineWithMarkers;
+ 
+-},{"../../constants/gl3d_dashes":336,"../../constants/gl_markers":337,"../../lib":347,"../../lib/gl_format_color":345,"../../lib/str2rgbarray":359,"../scatter/make_bubble_size_func":438,"./calc_errors":448,"delaunay-triangulate":101,"gl-error3d":106,"gl-line3d":110,"gl-mesh3d":133,"gl-scatter3d":162}],450:[function(require,module,exports){
++},{"../../constants/gl3d_dashes":330,"../../constants/gl_markers":331,"../../lib":341,"../../lib/gl_format_color":339,"../../lib/str2rgbarray":353,"../scatter/make_bubble_size_func":432,"./calc_errors":442,"delaunay-triangulate":75,"gl-error3d":97,"gl-line3d":102,"gl-mesh3d":125,"gl-scatter3d":131}],444:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -79177,7 +79994,7 @@ function handleXYZDefaults(traceIn, traceOut, coerce) {
+     return len;
+ }
+ 
+-},{"../../components/errorbars/defaults":295,"../../lib":347,"../scatter/line_defaults":435,"../scatter/marker_defaults":439,"../scatter/subtypes":443,"../scatter/text_defaults":444,"./attributes":446}],451:[function(require,module,exports){
++},{"../../components/errorbars/defaults":289,"../../lib":341,"../scatter/line_defaults":429,"../scatter/marker_defaults":433,"../scatter/subtypes":437,"../scatter/text_defaults":438,"./attributes":440}],445:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -79208,7 +80025,7 @@ Scatter3D.meta = {
+ 
+ module.exports = Scatter3D;
+ 
+-},{"../../constants/gl_markers":337,"../../plots/gl3d":390,"../scatter/colorbar":427,"./attributes":446,"./calc":447,"./convert":449,"./defaults":450}],452:[function(require,module,exports){
++},{"../../constants/gl_markers":331,"../../plots/gl3d":384,"../scatter/colorbar":421,"./attributes":440,"./calc":441,"./convert":443,"./defaults":444}],446:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -79428,7 +80245,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/color":267,"../../components/colorscale/attributes":273,"../../lib/extend":344}],453:[function(require,module,exports){
++},{"../../components/color":261,"../../components/colorscale/attributes":267,"../../lib/extend":338}],447:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -79452,7 +80269,7 @@ module.exports = function calc(gd, trace) {
+     }
+ };
+ 
+-},{"../../components/colorscale/calc":274}],454:[function(require,module,exports){
++},{"../../components/colorscale/calc":268}],448:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -79499,7 +80316,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(trace.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":270,"../../components/colorscale/get_scale":279,"../../lib":347,"../../plots/plots":403,"d3":100,"fast-isnumeric":104}],455:[function(require,module,exports){
++},{"../../components/colorbar/draw":264,"../../components/colorscale/get_scale":273,"../../lib":341,"../../plots/plots":397,"d3":74,"fast-isnumeric":82}],449:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -79862,7 +80679,7 @@ function createSurfaceTrace(scene, data) {
+ 
+ module.exports = createSurfaceTrace;
+ 
+-},{"../../lib/str2rgbarray":359,"gl-surface3d":187,"ndarray":219,"ndarray-fill":212,"ndarray-homography":217,"ndarray-ops":218,"tinycolor2":239}],456:[function(require,module,exports){
++},{"../../lib/str2rgbarray":353,"gl-surface3d":143,"ndarray":191,"ndarray-fill":181,"ndarray-homography":183,"ndarray-ops":185,"tinycolor2":240}],450:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -79979,7 +80796,7 @@ function mapLegacy(traceIn, oldAttr, newAttr) {
+     }
+ }
+ 
+-},{"../../components/colorscale/defaults":277,"../../lib":347,"./attributes":452}],457:[function(require,module,exports){
++},{"../../components/colorscale/defaults":271,"../../lib":341,"./attributes":446}],451:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -80009,5 +80826,5 @@ Surface.meta = {
+ 
+ module.exports = Surface;
+ 
+-},{"../../plots/gl3d":390,"./attributes":452,"./calc":453,"./colorbar":454,"./convert":455,"./defaults":456}]},{},[4])(4)
++},{"../../plots/gl3d":384,"./attributes":446,"./calc":447,"./colorbar":448,"./convert":449,"./defaults":450}]},{},[4])(4)
+ });
+\ No newline at end of file
+diff --git a/dist/plotly-gl3d.min.js b/dist/plotly-gl3d.min.js
+index 45d2d43..caca4eb 100644
+--- a/dist/plotly-gl3d.min.js
++++ b/dist/plotly-gl3d.min.js
+@@ -4,35 +4,35 @@
+ * All rights reserved.
+ * Licensed under the MIT license
+ */
+-!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var e;e="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,e.Plotly=t()}}(function(){var t;return function e(t,r,n){function i(a,s){if(!r[a]){if(!t[a]){var l="function"==typeof require&&require;if(!s&&l)return l(a,!0);if(o)return o(a,!0);var u=new Error("Cannot find module '"+a+"'");throw u.code="MODULE_NOT_FOUND",u}var c=r[a]={exports:{}};t[a][0].call(c.exports,function(e){var r=t[a][1][e];return i(r?r:e)},c,c.exports,e,t,r,n)}return r[a].exports}for(var o="function"==typeof require&&require,a=0;a<n.length;a++)i(n[a]);return i}({1:[function(t,e,r){"use strict";var n=t("../src/plotly"),i={"X,X div":"font-family:'Open Sans', verdana, arial, sans-serif;margin:0;padding:0;","X input,X button":"font-family:'Open Sans', verdana, arial, sans-serif;","X input:focus,X 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h=Math.max(e,o,u),f=Math.sqrt(2*h-c+1);e>=h?(t[0]=.5*f,t[1]=.5*(i+r)/f,t[2]=.5*(s+n)/f,t[3]=.5*(a-l)/f):o>=h?(t[0]=.5*(r+i)/f,t[1]=.5*f,t[2]=.5*(l+a)/f,t[3]=.5*(s-n)/f):(t[0]=.5*(n+s)/f,t[1]=.5*(a+l)/f,t[2]=.5*f,t[3]=.5*(r-i)/f)}return t}e.exports=n},{}],25:[function(t,e,r){"use strict";function n(t,e,r){return Math.sqrt(Math.pow(t,2)+Math.pow(e,2)+Math.pow(r,2))}function i(t,e,r,n){return Math.sqrt(Math.pow(t,2)+Math.pow(e,2)+Math.pow(r,2)+Math.pow(n,2))}function o(t,e){var r=e[0],n=e[1],o=e[2],a=e[3],s=i(r,n,o,a);s>1e-6?(t[0]=r/s,t[1]=n/s,t[2]=o/s,t[3]=a/s):(t[0]=t[1]=t[2]=0,t[3]=1)}function a(t,e,r){this.radius=l([r]),this.center=l(e),this.rotation=l(t),this.computedRadius=this.radius.curve(0),this.computedCenter=this.center.curve(0),this.computedRotation=this.rotation.curve(0),this.computedUp=[.1,0,0],this.computedEye=[.1,0,0],this.computedMatrix=[.1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],this.recalcMatrix(0)}function s(t){t=t||{};var e=t.center||[0,0,0],r=t.rotation||[0,0,0,1],n=t.radius||1;e=[].slice.call(e,0,3),r=[].slice.call(r,0,4),o(r,r);var i=new a(r,e,Math.log(n));return i.setDistanceLimits(t.zoomMin,t.zoomMax),("eye"in t||"up"in t)&&i.lookAt(0,t.eye,t.center,t.up),i}e.exports=s;var l=t("filtered-vector"),u=t("gl-mat4/lookAt"),c=t("gl-mat4/fromQuat"),f=t("gl-mat4/invert"),h=t("./lib/quatFromFrame"),d=a.prototype;d.lastT=function(){return Math.max(this.radius.lastT(),this.center.lastT(),this.rotation.lastT())},d.recalcMatrix=function(t){this.radius.curve(t),this.center.curve(t),this.rotation.curve(t);var e=this.computedRotation;o(e,e);var r=this.computedMatrix;c(r,e);var n=this.computedCenter,i=this.computedEye,a=this.computedUp,s=Math.exp(this.computedRadius[0]);i[0]=n[0]+s*r[2],i[1]=n[1]+s*r[6],i[2]=n[2]+s*r[10],a[0]=r[1],a[1]=r[5],a[2]=r[9];for(var l=0;3>l;++l){for(var u=0,f=0;3>f;++f)u+=r[l+4*f]*i[f];r[12+l]=-u}},d.getMatrix=function(t,e){this.recalcMatrix(t);var r=this.computedMatrix;if(e){for(var n=0;16>n;++n)e[n]=r[n];return e}return r},d.idle=function(t){this.center.idle(t),this.radius.idle(t),this.rotation.idle(t)},d.flush=function(t){this.center.flush(t),this.radius.flush(t),this.rotation.flush(t)},d.pan=function(t,e,r,i){e=e||0,r=r||0,i=i||0,this.recalcMatrix(t);var o=this.computedMatrix,a=o[1],s=o[5],l=o[9],u=n(a,s,l);a/=u,s/=u,l/=u;var c=o[0],f=o[4],h=o[8],d=c*a+f*s+h*l;c-=a*d,f-=s*d,h-=l*d;var p=n(c,f,h);c/=p,f/=p,h/=p;var g=o[2],v=o[6],m=o[10],y=g*a+v*s+m*l,b=g*c+v*f+m*h;g-=y*a+b*c,v-=y*s+b*f,m-=y*l+b*h;var x=n(g,v,m);g/=x,v/=x,m/=x;var _=c*e+a*r,w=f*e+s*r,A=h*e+l*r;this.center.move(t,_,w,A);var M=Math.exp(this.computedRadius[0]);M=Math.max(1e-4,M+i),this.radius.set(t,Math.log(M))},d.rotate=function(t,e,r,o){this.recalcMatrix(t),e=e||0,r=r||0;var a=this.computedMatrix,s=a[0],l=a[4],u=a[8],c=a[1],f=a[5],h=a[9],d=a[2],p=a[6],g=a[10],v=e*s+r*c,m=e*l+r*f,y=e*u+r*h,b=-(p*y-g*m),x=-(g*v-d*y),_=-(d*m-p*v),w=Math.sqrt(Math.max(0,1-Math.pow(b,2)-Math.pow(x,2)-Math.pow(_,2))),A=i(b,x,_,w);A>1e-6?(b/=A,x/=A,_/=A,w/=A):(b=x=_=0,w=1);var M=this.computedRotation,k=M[0],T=M[1],E=M[2],L=M[3],S=k*w+L*b+T*_-E*x,C=T*w+L*x+E*b-k*_,P=E*w+L*_+k*x-T*b,R=L*w-k*b-T*x-E*_;if(o){b=d,x=p,_=g;var N=Math.sin(o)/n(b,x,_);b*=N,x*=N,_*=N,w=Math.cos(e),S=S*w+R*b+C*_-P*x,C=C*w+R*x+P*b-S*_,P=P*w+R*_+S*x-C*b,R=R*w-S*b-C*x-P*_}var z=i(S,C,P,R);z>1e-6?(S/=z,C/=z,P/=z,R/=z):(S=C=P=0,R=1),this.rotation.set(t,S,C,P,R)},d.lookAt=function(t,e,r,n){this.recalcMatrix(t),r=r||this.computedCenter,e=e||this.computedEye,n=n||this.computedUp;var i=this.computedMatrix;u(i,e,r,n);var a=this.computedRotation;h(a,i[0],i[1],i[2],i[4],i[5],i[6],i[8],i[9],i[10]),o(a,a),this.rotation.set(t,a[0],a[1],a[2],a[3]);for(var s=0,l=0;3>l;++l)s+=Math.pow(r[l]-e[l],2);this.radius.set(t,.5*Math.log(Math.max(s,1e-6))),this.center.set(t,r[0],r[1],r[2])},d.translate=function(t,e,r,n){this.center.move(t,e||0,r||0,n||0)},d.setMatrix=function(t,e){var r=this.computedRotation;h(r,e[0],e[1],e[2],e[4],e[5],e[6],e[8],e[9],e[10]),o(r,r),this.rotation.set(t,r[0],r[1],r[2],r[3]);var n=this.computedMatrix;f(n,e);var i=n[15];if(Math.abs(i)>1e-6){var a=n[12]/i,s=n[13]/i,l=n[14]/i;this.recalcMatrix(t);var u=Math.exp(this.computedRadius[0]);this.center.set(t,a-n[2]*u,s-n[6]*u,l-n[10]*u),this.radius.idle(t)}else this.center.idle(t),this.radius.idle(t)},d.setDistance=function(t,e){e>0&&this.radius.set(t,Math.log(e))},d.setDistanceLimits=function(t,e){t=t>0?Math.log(t):-(1/0),e=e>0?Math.log(e):1/0,e=Math.max(e,t),this.radius.bounds[0][0]=t,this.radius.bounds[1][0]=e},d.getDistanceLimits=function(t){var e=this.radius.bounds;return t?(t[0]=Math.exp(e[0][0]),t[1]=Math.exp(e[1][0]),t):[Math.exp(e[0][0]),Math.exp(e[1][0])]},d.toJSON=function(){return this.recalcMatrix(this.lastT()),{center:this.computedCenter.slice(),rotation:this.computedRotation.slice(),distance:Math.log(this.computedRadius[0]),zoomMin:this.radius.bounds[0][0],zoomMax:this.radius.bounds[1][0]}},d.fromJSON=function(t){var e=this.lastT(),r=t.center;r&&this.center.set(e,r[0],r[1],r[2]);var n=t.rotation;n&&this.rotation.set(e,n[0],n[1],n[2],n[3]);var i=t.distance;i&&i>0&&this.radius.set(e,Math.log(i)),this.setDistanceLimits(t.zoomMin,t.zoomMax)}},{"./lib/quatFromFrame":24,"filtered-vector":8,"gl-mat4/fromQuat":117,"gl-mat4/invert":120,"gl-mat4/lookAt":121}],26:[function(t,e,r){"use strict";function n(t,e,r){return Math.sqrt(Math.pow(t,2)+Math.pow(e,2)+Math.pow(r,2))}function i(t){return Math.min(1,Math.max(-1,t))}function o(t){var e=Math.abs(t[0]),r=Math.abs(t[1]),n=Math.abs(t[2]),i=[0,0,0];e>Math.max(r,n)?i[2]=1:r>Math.max(e,n)?i[0]=1:i[1]=1;for(var o=0,a=0,s=0;3>s;++s)o+=t[s]*t[s],a+=i[s]*t[s];for(var s=0;3>s;++s)i[s]-=a/o*t[s];return h(i,i),i}function a(t,e,r,n,i,o,a,s){this.center=l(r),this.up=l(n),this.right=l(i),this.radius=l([o]),this.angle=l([a,s]),this.angle.bounds=[[-(1/0),-Math.PI/2],[1/0,Math.PI/2]],this.setDistanceLimits(t,e),this.computedCenter=this.center.curve(0),this.computedUp=this.up.curve(0),this.computedRight=this.right.curve(0),this.computedRadius=this.radius.curve(0),this.computedAngle=this.angle.curve(0),
+-this.computedToward=[0,0,0],this.computedEye=[0,0,0],this.computedMatrix=new Array(16);for(var u=0;16>u;++u)this.computedMatrix[u]=.5;this.recalcMatrix(0)}function s(t){t=t||{};var e=t.center||[0,0,0],r=t.up||[0,1,0],i=t.right||o(r),s=t.radius||1,l=t.theta||0,u=t.phi||0;if(e=[].slice.call(e,0,3),r=[].slice.call(r,0,3),h(r,r),i=[].slice.call(i,0,3),h(i,i),"eye"in t){var c=t.eye,p=[c[0]-e[0],c[1]-e[1],c[2]-e[2]];f(i,p,r),n(i[0],i[1],i[2])<1e-6?i=o(r):h(i,i),s=n(p[0],p[1],p[2]);var g=d(r,p)/s,v=d(i,p)/s;u=Math.acos(g),l=Math.acos(v)}return s=Math.log(s),new a(t.zoomMin,t.zoomMax,e,r,i,s,l,u)}e.exports=s;var l=t("filtered-vector"),u=t("gl-mat4/invert"),c=t("gl-mat4/rotate"),f=t("gl-vec3/cross"),h=t("gl-vec3/normalize"),d=t("gl-vec3/dot"),p=a.prototype;p.setDistanceLimits=function(t,e){t=t>0?Math.log(t):-(1/0),e=e>0?Math.log(e):1/0,e=Math.max(e,t),this.radius.bounds[0][0]=t,this.radius.bounds[1][0]=e},p.getDistanceLimits=function(t){var e=this.radius.bounds[0];return t?(t[0]=Math.exp(e[0][0]),t[1]=Math.exp(e[1][0]),t):[Math.exp(e[0][0]),Math.exp(e[1][0])]},p.recalcMatrix=function(t){this.center.curve(t),this.up.curve(t),this.right.curve(t),this.radius.curve(t),this.angle.curve(t);for(var e=this.computedUp,r=this.computedRight,i=0,o=0,a=0;3>a;++a)o+=e[a]*r[a],i+=e[a]*e[a];for(var s=Math.sqrt(i),l=0,a=0;3>a;++a)r[a]-=e[a]*o/i,l+=r[a]*r[a],e[a]/=s;for(var u=Math.sqrt(l),a=0;3>a;++a)r[a]/=u;var c=this.computedToward;f(c,e,r),h(c,c);for(var d=Math.exp(this.computedRadius[0]),p=this.computedAngle[0],g=this.computedAngle[1],v=Math.cos(p),m=Math.sin(p),y=Math.cos(g),b=Math.sin(g),x=this.computedCenter,_=v*y,w=m*y,A=b,M=-v*b,k=-m*b,T=y,E=this.computedEye,L=this.computedMatrix,a=0;3>a;++a){var S=_*r[a]+w*c[a]+A*e[a];L[4*a+1]=M*r[a]+k*c[a]+T*e[a],L[4*a+2]=S,L[4*a+3]=0}var C=L[1],P=L[5],R=L[9],N=L[2],z=L[6],I=L[10],O=P*I-R*z,j=R*N-C*I,D=C*z-P*N,F=n(O,j,D);O/=F,j/=F,D/=F,L[0]=O,L[4]=j,L[8]=D;for(var a=0;3>a;++a)E[a]=x[a]+L[2+4*a]*d;for(var a=0;3>a;++a){for(var l=0,B=0;3>B;++B)l+=L[a+4*B]*E[B];L[12+a]=-l}L[15]=1},p.getMatrix=function(t,e){this.recalcMatrix(t);var r=this.computedMatrix;if(e){for(var n=0;16>n;++n)e[n]=r[n];return e}return r};var g=[0,0,0];p.rotate=function(t,e,r,n){if(this.angle.move(t,e,r),n){this.recalcMatrix(t);var i=this.computedMatrix;g[0]=i[2],g[1]=i[6],g[2]=i[10];for(var o=this.computedUp,a=this.computedRight,s=this.computedToward,l=0;3>l;++l)i[4*l]=o[l],i[4*l+1]=a[l],i[4*l+2]=s[l];c(i,i,n,g);for(var l=0;3>l;++l)o[l]=i[4*l],a[l]=i[4*l+1];this.up.set(t,o[0],o[1],o[2]),this.right.set(t,a[0],a[1],a[2])}},p.pan=function(t,e,r,i){e=e||0,r=r||0,i=i||0,this.recalcMatrix(t);var o=this.computedMatrix,a=(Math.exp(this.computedRadius[0]),o[1]),s=o[5],l=o[9],u=n(a,s,l);a/=u,s/=u,l/=u;var c=o[0],f=o[4],h=o[8],d=c*a+f*s+h*l;c-=a*d,f-=s*d,h-=l*d;var p=n(c,f,h);c/=p,f/=p,h/=p;var g=c*e+a*r,v=f*e+s*r,m=h*e+l*r;this.center.move(t,g,v,m);var y=Math.exp(this.computedRadius[0]);y=Math.max(1e-4,y+i),this.radius.set(t,Math.log(y))},p.translate=function(t,e,r,n){this.center.move(t,e||0,r||0,n||0)},p.setMatrix=function(t,e,r,o){var a=1;"number"==typeof r&&(a=0|r),(0>a||a>3)&&(a=1);var s=(a+2)%3;e||(this.recalcMatrix(t),e=this.computedMatrix);var l=e[a],c=e[a+4],f=e[a+8];if(o){var h=Math.abs(l),d=Math.abs(c),p=Math.abs(f),g=Math.max(h,d,p);h===g?(l=0>l?-1:1,c=f=0):p===g?(f=0>f?-1:1,l=c=0):(c=0>c?-1:1,l=f=0)}else{var v=n(l,c,f);l/=v,c/=v,f/=v}var m=e[s],y=e[s+4],b=e[s+8],x=m*l+y*c+b*f;m-=l*x,y-=c*x,b-=f*x;var _=n(m,y,b);m/=_,y/=_,b/=_;var w=c*b-f*y,A=f*m-l*b,M=l*y-c*m,k=n(w,A,M);w/=k,A/=k,M/=k,this.center.jump(t,H,G,X),this.radius.idle(t),this.up.jump(t,l,c,f),this.right.jump(t,m,y,b);var T,E;if(2===a){var L=e[1],S=e[5],C=e[9],P=L*m+S*y+C*b,R=L*w+S*A+C*M;T=0>O?-Math.PI/2:Math.PI/2,E=Math.atan2(R,P)}else{var N=e[2],z=e[6],I=e[10],O=N*l+z*c+I*f,j=N*m+z*y+I*b,D=N*w+z*A+I*M;T=Math.asin(i(O)),E=Math.atan2(D,j)}this.angle.jump(t,E,T),this.recalcMatrix(t);var F=e[2],B=e[6],U=e[10],V=this.computedMatrix;u(V,e);var q=V[15],H=V[12]/q,G=V[13]/q,X=V[14]/q,Y=Math.exp(this.computedRadius[0]);this.center.jump(t,H-F*Y,G-B*Y,X-U*Y)},p.lastT=function(){return Math.max(this.center.lastT(),this.up.lastT(),this.right.lastT(),this.radius.lastT(),this.angle.lastT())},p.idle=function(t){this.center.idle(t),this.up.idle(t),this.right.idle(t),this.radius.idle(t),this.angle.idle(t)},p.flush=function(t){this.center.flush(t),this.up.flush(t),this.right.flush(t),this.radius.flush(t),this.angle.flush(t)},p.setDistance=function(t,e){e>0&&this.radius.set(t,Math.log(e))},p.lookAt=function(t,e,r,o){this.recalcMatrix(t),e=e||this.computedEye,r=r||this.computedCenter,o=o||this.computedUp;var a=o[0],s=o[1],l=o[2],u=n(a,s,l);if(!(1e-6>u)){a/=u,s/=u,l/=u;var c=e[0]-r[0],f=e[1]-r[1],h=e[2]-r[2],d=n(c,f,h);if(!(1e-6>d)){c/=d,f/=d,h/=d;var p=this.computedRight,g=p[0],v=p[1],m=p[2],y=a*g+s*v+l*m;g-=y*a,v-=y*s,m-=y*l;var b=n(g,v,m);if(!(.01>b&&(g=s*h-l*f,v=l*c-a*h,m=a*f-s*c,b=n(g,v,m),1e-6>b))){g/=b,v/=b,m/=b,this.up.set(t,a,s,l),this.right.set(t,g,v,m),this.center.set(t,r[0],r[1],r[2]),this.radius.set(t,Math.log(d));var x=s*m-l*v,_=l*g-a*m,w=a*v-s*g,A=n(x,_,w);x/=A,_/=A,w/=A;var M=a*c+s*f+l*h,k=g*c+v*f+m*h,T=x*c+_*f+w*h,E=Math.asin(i(M)),L=Math.atan2(T,k),S=this.angle._state,C=S[S.length-1],P=S[S.length-2];C%=2*Math.PI;var R=Math.abs(C+2*Math.PI-L),N=Math.abs(C-L),z=Math.abs(C-2*Math.PI-L);N>R&&(C+=2*Math.PI),N>z&&(C-=2*Math.PI),this.angle.jump(this.angle.lastT(),C,P),this.angle.set(t,L,E)}}}}},{"filtered-vector":8,"gl-mat4/invert":120,"gl-mat4/rotate":124,"gl-vec3/cross":11,"gl-vec3/dot":12,"gl-vec3/normalize":15}],27:[function(t,e,r){"use strict";function n(t,e){this._controllerNames=Object.keys(t),this._controllerList=this._controllerNames.map(function(e){return t[e]}),this._mode=e,this._active=t[e],this._active||(this._mode="turntable",this._active=t.turntable),this.modes=this._controllerNames,this.computedMatrix=this._active.computedMatrix,this.computedEye=this._active.computedEye,this.computedUp=this._active.computedUp,this.computedCenter=this._active.computedCenter,this.computedRadius=this._active.computedRadius}function i(t){t=t||{};var e=t.eye||[0,0,1],r=t.center||[0,0,0],i=t.up||[0,1,0],l=t.distanceLimits||[0,1/0],u=t.mode||"turntable",c=o(),f=a(),h=s();return c.setDistanceLimits(l[0],l[1]),c.lookAt(0,e,r,i),f.setDistanceLimits(l[0],l[1]),f.lookAt(0,e,r,i),h.setDistanceLimits(l[0],l[1]),h.lookAt(0,e,r,i),new n({turntable:c,orbit:f,matrix:h},u)}e.exports=i;var o=t("turntable-camera-controller"),a=t("orbit-camera-controller"),s=t("matrix-camera-controller"),l=n.prototype,u=[["flush",1],["idle",1],["lookAt",4],["rotate",4],["pan",4],["translate",4],["setMatrix",2],["setDistanceLimits",2],["setDistance",2]];u.forEach(function(t){for(var e=t[0],r=[],n=0;n<t[1];++n)r.push("a"+n);var i="var cc=this._controllerList;for(var i=0;i<cc.length;++i){cc[i]."+t[0]+"("+r.join()+")}";l[e]=Function.apply(null,r.concat(i))}),l.recalcMatrix=function(t){this._active.recalcMatrix(t)},l.getDistance=function(t){return this._active.getDistance(t)},l.getDistanceLimits=function(t){return this._active.getDistanceLimits(t)},l.lastT=function(){return this._active.lastT()},l.setMode=function(t){if(t!==this._mode){var e=this._controllerNames.indexOf(t);if(!(0>e)){var r=this._active,n=this._controllerList[e],i=Math.max(r.lastT(),n.lastT());r.recalcMatrix(i),n.setMatrix(i,r.computedMatrix),this._active=n,this._mode=t,this.computedMatrix=this._active.computedMatrix,this.computedEye=this._active.computedEye,this.computedUp=this._active.computedUp,this.computedCenter=this._active.computedCenter,this.computedRadius=this._active.computedRadius}}},l.getMode=function(){return this._mode}},{"matrix-camera-controller":16,"orbit-camera-controller":25,"turntable-camera-controller":26}],28:[function(t,e,r){function n(t,e){return o(i(t,e))}e.exports=n;var i=t("alpha-complex"),o=t("simplicial-complex-boundary")},{"alpha-complex":29,"simplicial-complex-boundary":32}],29:[function(t,e,r){"use strict";function n(t,e){return i(e).filter(function(r){for(var n=new Array(r.length),i=0;i<r.length;++i)n[i]=e[r[i]];return o(n)*t<1})}e.exports=n;var i=t("delaunay-triangulate"),o=t("circumradius")},{circumradius:30,"delaunay-triangulate":101}],30:[function(t,e,r){function 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t.sign=!0,e._normSign()}if(this.sign)return this.sign=!1,this.iadd(t),this.sign=!0,this._normSign();var r=this.cmp(t);if(0===r)return this.sign=!1,this.length=1,this.words[0]=0,this;var n,i;r>0?(n=this,i=t):(n=t,i=this);for(var o=0,a=0;a<i.length;a++){var e=n.words[a]-i.words[a]+o;o=e>>26,this.words[a]=67108863&e}for(;0!==o&&a<n.length;a++){var e=n.words[a]+o;o=e>>26,this.words[a]=67108863&e}if(0===o&&a<n.length&&n!==this)for(;a<n.length;a++)this.words[a]=n.words[a];return this.length=Math.max(this.length,a),n!==this&&(this.sign=!0),this.strip()},i.prototype.sub=function(t){return this.clone().isub(t)},i.prototype._smallMulTo=function(t,e){e.sign=t.sign!==this.sign,e.length=this.length+t.length;
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Array(this.length+t.length),this.mulTo(t,e)},i.prototype.imul=function(t){if(0===this.cmpn(0)||0===t.cmpn(0))return this.words[0]=0,this.length=1,this;var e=this.length,r=t.length;this.sign=t.sign!==this.sign,this.length=this.length+t.length,this.words[this.length-1]=0;for(var n=this.length-2;n>=0;n--){for(var i=0,o=0,a=Math.min(n,r-1),s=Math.max(0,n-e+1);a>=s;s++){var l=n-s,u=this.words[l],c=t.words[s],f=u*c,h=67108863&f;i+=f/67108864|0,h+=o,o=67108863&h,i+=h>>>26}this.words[n]=o,this.words[n+1]+=i,i=0}for(var i=0,l=1;l<this.length;l++){var d=this.words[l]+i;this.words[l]=67108863&d,i=d>>>26}return this.strip()},i.prototype.imuln=function(t){r("number"==typeof t);for(var e=0,n=0;n<this.length;n++){var i=this.words[n]*t,o=(67108863&i)+(67108863&e);e>>=26,e+=i/67108864|0,e+=o>>>26,this.words[n]=67108863&o}return 0!==e&&(this.words[n]=e,this.length++),this},i.prototype.muln=function(t){return this.clone().imuln(t)},i.prototype.sqr=function(){return this.mul(this)},i.prototype.isqr=function(){return this.mul(this)},i.prototype.ishln=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=67108863>>>26-e<<26-e;if(0!==e){for(var o=0,a=0;a<this.length;a++){var s=this.words[a]&i,l=this.words[a]-s<<e;this.words[a]=l|o,o=s>>>26-e}o&&(this.words[a]=o,this.length++)}if(0!==n){for(var a=this.length-1;a>=0;a--)this.words[a+n]=this.words[a];for(var a=0;n>a;a++)this.words[a]=0;this.length+=n}return this.strip()},i.prototype.ishrn=function(t,e,n){r("number"==typeof t&&t>=0);var i;i=e?(e-e%26)/26:0;var o=t%26,a=Math.min((t-o)/26,this.length),s=67108863^67108863>>>o<<o,l=n;if(i-=a,i=Math.max(0,i),l){for(var u=0;a>u;u++)l.words[u]=this.words[u];l.length=a}if(0===a);else if(this.length>a){this.length-=a;for(var u=0;u<this.length;u++)this.words[u]=this.words[u+a]}else this.words[0]=0,this.length=1;for(var c=0,u=this.length-1;u>=0&&(0!==c||u>=i);u--){var f=this.words[u];this.words[u]=c<<26-o|f>>>o,c=f&s}return l&&0!==c&&(l.words[l.length++]=c),0===this.length&&(this.words[0]=0,this.length=1),this.strip(),this},i.prototype.shln=function(t){return this.clone().ishln(t)},i.prototype.shrn=function(t){return this.clone().ishrn(t)},i.prototype.testn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n)return!1;var o=this.words[n];return!!(o&i)},i.prototype.imaskn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26;if(r(!this.sign,"imaskn works only with positive numbers"),0!==e&&n++,this.length=Math.min(n,this.length),0!==e){var i=67108863^67108863>>>e<<e;this.words[this.length-1]&=i}return this.strip()},i.prototype.maskn=function(t){return this.clone().imaskn(t)},i.prototype.iaddn=function(t){return r("number"==typeof t),0>t?this.isubn(-t):this.sign?1===this.length&&this.words[0]<t?(this.words[0]=t-this.words[0],this.sign=!1,this):(this.sign=!1,this.isubn(t),this.sign=!0,this):this._iaddn(t)},i.prototype._iaddn=function(t){this.words[0]+=t;for(var e=0;e<this.length&&this.words[e]>=67108864;e++)this.words[e]-=67108864,e===this.length-1?this.words[e+1]=1:this.words[e+1]++;return this.length=Math.max(this.length,e+1),this},i.prototype.isubn=function(t){if(r("number"==typeof t),0>t)return this.iaddn(-t);if(this.sign)return this.sign=!1,this.iaddn(t),this.sign=!0,this;this.words[0]-=t;for(var e=0;e<this.length&&this.words[e]<0;e++)this.words[e]+=67108864,this.words[e+1]-=1;return this.strip()},i.prototype.addn=function(t){return this.clone().iaddn(t)},i.prototype.subn=function(t){return this.clone().isubn(t)},i.prototype.iabs=function(){return this.sign=!1,this},i.prototype.abs=function(){return this.clone().iabs()},i.prototype._ishlnsubmul=function(t,e,n){var i,o=t.length+n;if(this.words.length<o){for(var a=new Array(o),i=0;i<this.length;i++)a[i]=this.words[i];this.words=a}else i=this.length;for(this.length=Math.max(this.length,o);i<this.length;i++)this.words[i]=0;for(var s=0,i=0;i<t.length;i++){var l=this.words[i+n]+s,u=t.words[i]*e;l-=67108863&u,s=(l>>26)-(u/67108864|0),this.words[i+n]=67108863&l}for(;i<this.length-n;i++){var l=this.words[i+n]+s;s=l>>26,this.words[i+n]=67108863&l}if(0===s)return this.strip();r(-1===s),s=0;for(var i=0;i<this.length;i++){var l=-this.words[i]+s;s=l>>26,this.words[i]=67108863&l}return this.sign=!0,this.strip()},i.prototype._wordDiv=function(t,e){var r=this.length-t.length,n=this.clone(),o=t,a=o.words[o.length-1],s=this._countBits(a);r=26-s,0!==r&&(o=o.shln(r),n.ishln(r),a=o.words[o.length-1]);var l,u=n.length-o.length;if("mod"!==e){l=new i(null),l.length=u+1,l.words=new Array(l.length);for(var c=0;c<l.length;c++)l.words[c]=0}var f=n.clone()._ishlnsubmul(o,1,u);f.sign||(n=f,l&&(l.words[u]=1));for(var h=u-1;h>=0;h--){var d=67108864*n.words[o.length+h]+n.words[o.length+h-1];for(d=Math.min(d/a|0,67108863),n._ishlnsubmul(o,d,h);n.sign;)d--,n.sign=!1,n._ishlnsubmul(o,1,h),0!==n.cmpn(0)&&(n.sign=!n.sign);l&&(l.words[h]=d)}return l&&l.strip(),n.strip(),"div"!==e&&0!==r&&n.ishrn(r),{div:l?l:null,mod:n}},i.prototype.divmod=function(t,e){if(r(0!==t.cmpn(0)),this.sign&&!t.sign){var n,o,a=this.neg().divmod(t,e);return"mod"!==e&&(n=a.div.neg()),"div"!==e&&(o=0===a.mod.cmpn(0)?a.mod:t.sub(a.mod)),{div:n,mod:o}}if(!this.sign&&t.sign){var n,a=this.divmod(t.neg(),e);return"mod"!==e&&(n=a.div.neg()),{div:n,mod:a.mod}}return this.sign&&t.sign?this.neg().divmod(t.neg(),e):t.length>this.length||this.cmp(t)<0?{div:new i(0),mod:this}:1===t.length?"div"===e?{div:this.divn(t.words[0]),mod:null}:"mod"===e?{div:null,mod:new i(this.modn(t.words[0]))}:{div:this.divn(t.words[0]),mod:new i(this.modn(t.words[0]))}:this._wordDiv(t,e)},i.prototype.div=function(t){return this.divmod(t,"div").div},i.prototype.mod=function(t){return this.divmod(t,"mod").mod},i.prototype.divRound=function(t){var e=this.divmod(t);if(0===e.mod.cmpn(0))return e.div;var r=e.div.sign?e.mod.isub(t):e.mod,n=t.shrn(1),i=t.andln(1),o=r.cmp(n);return 0>o||1===i&&0===o?e.div:e.div.sign?e.div.isubn(1):e.div.iaddn(1)},i.prototype.modn=function(t){r(67108863>=t);for(var e=(1<<26)%t,n=0,i=this.length-1;i>=0;i--)n=(e*n+this.words[i])%t;return n},i.prototype.idivn=function(t){r(67108863>=t);for(var e=0,n=this.length-1;n>=0;n--){var i=this.words[n]+67108864*e;this.words[n]=i/t|0,e=i%t}return this.strip()},i.prototype.divn=function(t){return this.clone().idivn(t)},i.prototype.egcd=function(t){r(!t.sign),r(0!==t.cmpn(0));var e=this,n=t.clone();e=e.sign?e.mod(t):e.clone();for(var o=new i(1),a=new i(0),s=new i(0),l=new i(1),u=0;e.isEven()&&n.isEven();)e.ishrn(1),n.ishrn(1),++u;for(var c=n.clone(),f=e.clone();0!==e.cmpn(0);){for(;e.isEven();)e.ishrn(1),o.isEven()&&a.isEven()?(o.ishrn(1),a.ishrn(1)):(o.iadd(c).ishrn(1),a.isub(f).ishrn(1));for(;n.isEven();)n.ishrn(1),s.isEven()&&l.isEven()?(s.ishrn(1),l.ishrn(1)):(s.iadd(c).ishrn(1),l.isub(f).ishrn(1));e.cmp(n)>=0?(e.isub(n),o.isub(s),a.isub(l)):(n.isub(e),s.isub(o),l.isub(a))}return{a:s,b:l,gcd:n.ishln(u)}},i.prototype._invmp=function(t){r(!t.sign),r(0!==t.cmpn(0));var e=this,n=t.clone();e=e.sign?e.mod(t):e.clone();for(var o=new i(1),a=new i(0),s=n.clone();e.cmpn(1)>0&&n.cmpn(1)>0;){for(;e.isEven();)e.ishrn(1),o.isEven()?o.ishrn(1):o.iadd(s).ishrn(1);for(;n.isEven();)n.ishrn(1),a.isEven()?a.ishrn(1):a.iadd(s).ishrn(1);e.cmp(n)>=0?(e.isub(n),o.isub(a)):(n.isub(e),a.isub(o))}return 0===e.cmpn(1)?o:a},i.prototype.gcd=function(t){if(0===this.cmpn(0))return t.clone();if(0===t.cmpn(0))return this.clone();var e=this.clone(),r=t.clone();e.sign=!1,r.sign=!1;for(var n=0;e.isEven()&&r.isEven();n++)e.ishrn(1),r.ishrn(1);for(;;){for(;e.isEven();)e.ishrn(1);for(;r.isEven();)r.ishrn(1);var i=e.cmp(r);if(0>i){var o=e;e=r,r=o}else if(0===i||0===r.cmpn(1))break;e.isub(r)}return r.ishln(n)},i.prototype.invm=function(t){return this.egcd(t).a.mod(t)},i.prototype.isEven=function(){return 0===(1&this.words[0])},i.prototype.isOdd=function(){return 1===(1&this.words[0])},i.prototype.andln=function(t){return this.words[0]&t},i.prototype.bincn=function(t){r("number"==typeof t);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n){for(var o=this.length;n+1>o;o++)this.words[o]=0;return this.words[n]|=i,this.length=n+1,this}for(var a=i,o=n;0!==a&&o<this.length;o++){var s=this.words[o];s+=a,a=s>>>26,s&=67108863,this.words[o]=s}return 0!==a&&(this.words[o]=a,this.length++),this},i.prototype.cmpn=function(t){var e=0>t;if(e&&(t=-t),this.sign&&!e)return-1;if(!this.sign&&e)return 1;t&=67108863,this.strip();var r;if(this.length>1)r=1;else{var n=this.words[0];r=n===t?0:t>n?-1:1}return this.sign&&(r=-r),r},i.prototype.cmp=function(t){if(this.sign&&!t.sign)return-1;if(!this.sign&&t.sign)return 1;var e=this.ucmp(t);return this.sign?-e:e},i.prototype.ucmp=function(t){if(this.length>t.length)return 1;if(this.length<t.length)return-1;for(var e=0,r=this.length-1;r>=0;r--){var n=this.words[r],i=t.words[r];if(n!==i){i>n?e=-1:n>i&&(e=1);break}}return e},i.red=function(t){return new h(t)},i.prototype.toRed=function(t){return r(!this.red,"Already a number in reduction context"),r(!this.sign,"red works only with positives"),t.convertTo(this)._forceRed(t)},i.prototype.fromRed=function(){return r(this.red,"fromRed works only with numbers in reduction context"),this.red.convertFrom(this)},i.prototype._forceRed=function(t){return this.red=t,this},i.prototype.forceRed=function(t){return r(!this.red,"Already a number in reduction context"),this._forceRed(t)},i.prototype.redAdd=function(t){return r(this.red,"redAdd works only with red numbers"),this.red.add(this,t)},i.prototype.redIAdd=function(t){return r(this.red,"redIAdd works only with red numbers"),this.red.iadd(this,t)},i.prototype.redSub=function(t){return r(this.red,"redSub works only with red numbers"),this.red.sub(this,t)},i.prototype.redISub=function(t){return r(this.red,"redISub works only with red numbers"),this.red.isub(this,t)},i.prototype.redShl=function(t){return r(this.red,"redShl works only with red numbers"),this.red.shl(this,t)},i.prototype.redMul=function(t){return r(this.red,"redMul works only with red numbers"),this.red._verify2(this,t),this.red.mul(this,t)},i.prototype.redIMul=function(t){return r(this.red,"redMul works only with red numbers"),this.red._verify2(this,t),this.red.imul(this,t)},i.prototype.redSqr=function(){return r(this.red,"redSqr works only with red numbers"),this.red._verify1(this),this.red.sqr(this)},i.prototype.redISqr=function(){return r(this.red,"redISqr works only with red numbers"),this.red._verify1(this),this.red.isqr(this)},i.prototype.redSqrt=function(){return r(this.red,"redSqrt works only with red numbers"),this.red._verify1(this),this.red.sqrt(this)},i.prototype.redInvm=function(){return r(this.red,"redInvm works only with red numbers"),this.red._verify1(this),this.red.invm(this)},i.prototype.redNeg=function(){return r(this.red,"redNeg works only with red numbers"),this.red._verify1(this),this.red.neg(this)},i.prototype.redPow=function(t){return r(this.red&&!t.red,"redPow(normalNum)"),this.red._verify1(this),this.red.pow(this,t)};var m={k256:null,p224:null,p192:null,p25519:null};s.prototype._tmp=function(){var t=new i(null);return t.words=new Array(Math.ceil(this.n/13)),t},s.prototype.ireduce=function(t){var e,r=t;do this.split(r,this.tmp),r=this.imulK(r),r=r.iadd(this.tmp),e=r.bitLength();while(e>this.n);var n=e<this.n?-1:r.ucmp(this.p);return 0===n?(r.words[0]=0,r.length=1):n>0?r.isub(this.p):r.strip(),r},s.prototype.split=function(t,e){t.ishrn(this.n,0,e)},s.prototype.imulK=function(t){return t.imul(this.k)},n(l,s),l.prototype.split=function(t,e){for(var r=4194303,n=Math.min(t.length,9),i=0;n>i;i++)e.words[i]=t.words[i];if(e.length=n,t.length<=9)return t.words[0]=0,void(t.length=1);var o=t.words[9];e.words[e.length++]=o&r;for(var i=10;i<t.length;i++){var a=t.words[i];t.words[i-10]=(a&r)<<4|o>>>22,o=a}t.words[i-10]=o>>>22,t.length-=9},l.prototype.imulK=function(t){t.words[t.length]=0,t.words[t.length+1]=0,t.length+=2;for(var e,r=0,n=0;n<t.length;n++){var i=t.words[n];e=64*i,r+=977*i,e+=r/67108864|0,r&=67108863,t.words[n]=r,r=e}return 0===t.words[t.length-1]&&(t.length--,0===t.words[t.length-1]&&t.length--),t},n(u,s),n(c,s),n(f,s),f.prototype.imulK=function(t){for(var e=0,r=0;r<t.length;r++){var n=19*t.words[r]+e,i=67108863&n;n>>>=26,t.words[r]=i,e=n}return 0!==e&&(t.words[t.length++]=e),t},i._prime=function y(t){if(m[t])return m[t];var y;if("k256"===t)y=new l;else if("p224"===t)y=new u;else if("p192"===t)y=new c;else{if("p25519"!==t)throw new Error("Unknown prime "+t);y=new f}return m[t]=y,y},h.prototype._verify1=function(t){r(!t.sign,"red works only with positives"),r(t.red,"red works only with red numbers")},h.prototype._verify2=function(t,e){r(!t.sign&&!e.sign,"red works only with positives"),r(t.red&&t.red===e.red,"red works only with red numbers")},h.prototype.imod=function(t){return this.prime?this.prime.ireduce(t)._forceRed(this):t.mod(this.m)._forceRed(this)},h.prototype.neg=function(t){var e=t.clone();return e.sign=!e.sign,e.iadd(this.m)._forceRed(this)},h.prototype.add=function(t,e){this._verify2(t,e);var r=t.add(e);return r.cmp(this.m)>=0&&r.isub(this.m),r._forceRed(this)},h.prototype.iadd=function(t,e){this._verify2(t,e);var r=t.iadd(e);return r.cmp(this.m)>=0&&r.isub(this.m),r},h.prototype.sub=function(t,e){this._verify2(t,e);var r=t.sub(e);return 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v=0;f>v;++v)t.color[v]=s(r,u,c,g,r.RGBA,r.COLOR_ATTACHMENT0+v);0===f?(t._color_rb=l(r,u,c,r.RGBA4,r.COLOR_ATTACHMENT0),h&&h.drawBuffersWEBGL(y[0])):f>1&&h.drawBuffersWEBGL(y[f]);var m=r.getExtension("WEBGL_depth_texture");m?d?t.depth=s(r,u,c,m.UNSIGNED_INT_24_8_WEBGL,r.DEPTH_STENCIL,r.DEPTH_STENCIL_ATTACHMENT):p&&(t.depth=s(r,u,c,r.UNSIGNED_SHORT,r.DEPTH_COMPONENT,r.DEPTH_ATTACHMENT)):p&&d?t._depth_rb=l(r,u,c,r.DEPTH_STENCIL,r.DEPTH_STENCIL_ATTACHMENT):p?t._depth_rb=l(r,u,c,r.DEPTH_COMPONENT16,r.DEPTH_ATTACHMENT):d&&(t._depth_rb=l(r,u,c,r.STENCIL_INDEX,r.STENCIL_ATTACHMENT));var b=r.checkFramebufferStatus(r.FRAMEBUFFER);if(b!==r.FRAMEBUFFER_COMPLETE){t._destroyed=!0,r.bindFramebuffer(r.FRAMEBUFFER,null),r.deleteFramebuffer(t.handle),t.handle=null,t.depth&&(t.depth.dispose(),t.depth=null),t._depth_rb&&(r.deleteRenderbuffer(t._depth_rb),t._depth_rb=null);for(var v=0;v<t.color.length;++v)t.color[v].dispose(),t.color[v]=null;t._color_rb&&(r.deleteRenderbuffer(t._color_rb),t._color_rb=null),i(r,e),a(b)}i(r,e)}function c(t,e,r,n,i,o,a,s){this.gl=t,this._shape=[0|e,0|r],this._destroyed=!1,this._ext=s,this.color=new Array(i);for(var l=0;i>l;++l)this.color[l]=null;this._color_rb=null,this.depth=null,this._depth_rb=null,this._colorType=n,this._useDepth=o,this._useStencil=a;var c=this,f=[0|e,0|r];Object.defineProperties(f,{0:{get:function(){return c._shape[0]},set:function(t){return c.width=t}},1:{get:function(){return c._shape[1]},set:function(t){return c.height=t}}}),this._shapeVector=f,u(this)}function f(t,e,r){if(t._destroyed)throw new Error("gl-fbo: Can't resize destroyed FBO");if(t._shape[0]!==e||t._shape[1]!==r){var o=t.gl,s=o.getParameter(o.MAX_RENDERBUFFER_SIZE);if(0>e||e>s||0>r||r>s)throw new Error("gl-fbo: Can't resize FBO, invalid dimensions");t._shape[0]=e,t._shape[1]=r;for(var l=n(o),u=0;u<t.color.length;++u)t.color[u].shape=t._shape;t._color_rb&&(o.bindRenderbuffer(o.RENDERBUFFER,t._color_rb),o.renderbufferStorage(o.RENDERBUFFER,o.RGBA4,t._shape[0],t._shape[1])),t.depth&&(t.depth.shape=t._shape),t._depth_rb&&(o.bindRenderbuffer(o.RENDERBUFFER,t._depth_rb),t._useDepth&&t._useStencil?o.renderbufferStorage(o.RENDERBUFFER,o.DEPTH_STENCIL,t._shape[0],t._shape[1]):t._useDepth?o.renderbufferStorage(o.RENDERBUFFER,o.DEPTH_COMPONENT16,t._shape[0],t._shape[1]):t._useStencil&&o.renderbufferStorage(o.RENDERBUFFER,o.STENCIL_INDEX,t._shape[0],t._shape[1])),o.bindFramebuffer(o.FRAMEBUFFER,t.handle);var c=o.checkFramebufferStatus(o.FRAMEBUFFER);c!==o.FRAMEBUFFER_COMPLETE&&(t.dispose(),i(o,l),a(c)),i(o,l)}}function h(t,e,r,n){p||(p=t.FRAMEBUFFER_UNSUPPORTED,g=t.FRAMEBUFFER_INCOMPLETE_ATTACHMENT,v=t.FRAMEBUFFER_INCOMPLETE_DIMENSIONS,m=t.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT);var i=t.getExtension("WEBGL_draw_buffers");if(!y&&i&&o(t,i),Array.isArray(e)&&(n=r,r=0|e[1],e=0|e[0]),"number"!=typeof e)throw new Error("gl-fbo: Missing shape parameter");var a=t.getParameter(t.MAX_RENDERBUFFER_SIZE);if(0>e||e>a||0>r||r>a)throw new Error("gl-fbo: Parameters are too large for FBO");n=n||{};var s=1;if("color"in n){if(s=Math.max(0|n.color,0),0>s)throw new Error("gl-fbo: Must specify a nonnegative number of colors");if(s>1){if(!i)throw new Error("gl-fbo: Multiple draw buffer extension not supported");
+-if(s>t.getParameter(i.MAX_COLOR_ATTACHMENTS_WEBGL))throw new Error("gl-fbo: Context does not support "+s+" draw buffers")}}var l=t.UNSIGNED_BYTE,u=t.getExtension("OES_texture_float");if(n.float&&s>0){if(!u)throw new Error("gl-fbo: Context does not support floating point textures");l=t.FLOAT}else n.preferFloat&&s>0&&u&&(l=t.FLOAT);var f=!0;"depth"in n&&(f=!!n.depth);var h=!1;return"stencil"in n&&(h=!!n.stencil),new c(t,e,r,l,s,f,h,i)}var d=t("gl-texture2d");e.exports=h;var p,g,v,m,y=null,b=c.prototype;Object.defineProperties(b,{shape:{get:function(){return this._destroyed?[0,0]:this._shapeVector},set:function(t){if(Array.isArray(t)||(t=[0|t,0|t]),2!==t.length)throw new Error("gl-fbo: Shape vector must be length 2");var e=0|t[0],r=0|t[1];return f(this,e,r),[e,r]},enumerable:!1},width:{get:function(){return this._destroyed?0:this._shape[0]},set:function(t){return t=0|t,f(this,t,this._shape[1]),t},enumerable:!1},height:{get:function(){return this._destroyed?0:this._shape[1]},set:function(t){return t=0|t,f(this,this._shape[0],t),t},enumerable:!1}}),b.bind=function(){if(!this._destroyed){var t=this.gl;t.bindFramebuffer(t.FRAMEBUFFER,this.handle),t.viewport(0,0,this._shape[0],this._shape[1])}},b.dispose=function(){if(!this._destroyed){this._destroyed=!0;var t=this.gl;t.deleteFramebuffer(this.handle),this.handle=null,this.depth&&(this.depth.dispose(),this.depth=null),this._depth_rb&&(t.deleteRenderbuffer(this._depth_rb),this._depth_rb=null);for(var e=0;e<this.color.length;++e)this.color[e].dispose(),this.color[e]=null;this._color_rb&&(t.deleteRenderbuffer(this._color_rb),this._color_rb=null)}}},{"gl-texture2d":188}],109:[function(t,e,r){var n=t("gl-shader"),i="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, nextPosition;\nattribute float arcLength, lineWidth;\nattribute vec4 color;\n\nuniform vec2 screenShape;\nuniform float pixelRatio;\nuniform mat4 model, view, projection;\n\nvarying vec4 fragColor;\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\n\nvoid main() {\n  vec4 projected = projection * view * model * vec4(position, 1.0);\n  vec4 tangentClip = projection * view * model * vec4(nextPosition - position, 0.0);\n  vec2 tangent = normalize(screenShape * tangentClip.xy);\n  vec2 offset = 0.5 * pixelRatio * lineWidth * vec2(tangent.y, -tangent.x) / screenShape;\n\n  gl_Position = vec4(projected.xy + projected.w * offset, projected.zw);\n\n  worldPosition = position;\n  pixelArcLength = arcLength;\n  fragColor = color;\n}\n",o="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3      clipBounds[2];\nuniform sampler2D dashTexture;\nuniform float     dashScale;\nuniform float     opacity;\n\nvarying vec3    worldPosition;\nvarying float   pixelArcLength;\nvarying vec4    fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  float dashWeight = texture2D(dashTexture, vec2(dashScale * pixelArcLength, 0)).r;\n  if(dashWeight < 0.5) {\n    discard;\n  }\n  gl_FragColor = fragColor * opacity;\n}\n",a="precision mediump float;\n#define GLSLIFY 1\n\n#define FLOAT_MAX  1.70141184e38\n#define FLOAT_MIN  1.17549435e-38\n\nlowp vec4 encode_float_1_0(highp float v) {\n  highp float av = abs(v);\n\n  //Handle special cases\n  if(av < FLOAT_MIN) {\n    return vec4(0.0, 0.0, 0.0, 0.0);\n  } else if(v > FLOAT_MAX) {\n    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;\n  } else if(v < -FLOAT_MAX) {\n    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;\n  }\n\n  highp vec4 c = vec4(0,0,0,0);\n\n  //Compute exponent and mantissa\n  highp float e = floor(log2(av));\n  highp float m = av * pow(2.0, -e) - 1.0;\n  \n  //Unpack mantissa\n  c[1] = floor(128.0 * m);\n  m -= c[1] / 128.0;\n  c[2] = floor(32768.0 * m);\n  m -= c[2] / 32768.0;\n  c[3] = floor(8388608.0 * m);\n  \n  //Unpack exponent\n  highp float ebias = e + 127.0;\n  c[0] = floor(ebias / 2.0);\n  ebias -= c[0] * 2.0;\n  c[1] += floor(ebias) * 128.0; \n\n  //Unpack sign bit\n  c[0] += 128.0 * step(0.0, -v);\n\n  //Scale back to range\n  return c / 255.0;\n}\n\n\n\nuniform float pickId;\nuniform vec3 clipBounds[2];\n\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId/255.0, encode_float_1_0(pixelArcLength).xyz);\n}",s=[{name:"position",type:"vec3"},{name:"nextPosition",type:"vec3"},{name:"arcLength",type:"float"},{name:"lineWidth",type:"float"},{name:"color",type:"vec4"}];r.createShader=function(t){return n(t,i,o,null,s)},r.createPickShader=function(t){return n(t,i,a,null,s)}},{"gl-shader":164}],110:[function(t,e,r){"use strict";function n(t,e){for(var r=0,n=0;3>n;++n){var i=t[n]-e[n];r+=i*i}return Math.sqrt(r)}function i(t){for(var e=[[-1e6,-1e6,-1e6],[1e6,1e6,1e6]],r=0;3>r;++r)e[0][r]=Math.max(t[0][r],e[0][r]),e[1][r]=Math.min(t[1][r],e[1][r]);return e}function o(t,e,r,n){this.arcLength=t,this.position=e,this.index=r,this.dataCoordinate=n}function a(t,e,r,n,i,o){this.gl=t,this.shader=e,this.pickShader=r,this.buffer=n,this.vao=i,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.points=[],this.arcLength=[],this.vertexCount=0,this.bounds=[[0,0,0],[0,0,0]],this.pickId=0,this.lineWidth=1,this.texture=o,this.dashScale=1,this.opacity=1,this.dirty=!0,this.pixelRatio=1}function s(t){var e=t.gl||t.scene&&t.scene.gl,r=g(e);r.attributes.position.location=0,r.attributes.nextPosition.location=1,r.attributes.arcLength.location=2,r.attributes.lineWidth.location=3,r.attributes.color.location=4;var n=v(e);n.attributes.position.location=0,n.attributes.nextPosition.location=1,n.attributes.arcLength.location=2,n.attributes.lineWidth.location=3,n.attributes.color.location=4;for(var i=l(e),o=u(e,[{buffer:i,size:3,offset:0,stride:48},{buffer:i,size:3,offset:12,stride:48},{buffer:i,size:1,offset:24,stride:48},{buffer:i,size:1,offset:28,stride:48},{buffer:i,size:4,offset:32,stride:48}]),s=d(new Array(1024),[256,1,4]),f=0;1024>f;++f)s.data[f]=255;var h=c(e,s);h.wrap=e.REPEAT;var p=new a(e,r,n,i,o,h);return p.update(t),p}e.exports=s;var l=t("gl-buffer"),u=t("gl-vao"),c=t("gl-texture2d"),f=t("glsl-read-float"),h=t("binary-search-bounds"),d=t("ndarray"),p=t("./lib/shaders"),g=p.createShader,v=p.createPickShader,m=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],y=a.prototype;y.isTransparent=function(){return this.opacity<1},y.isOpaque=function(){return this.opacity>=1},y.pickSlots=1,y.setPickBase=function(t){this.pickId=t},y.drawTransparent=y.draw=function(t){var e=this.gl,r=this.shader,n=this.vao;r.bind(),r.uniforms={model:t.model||m,view:t.view||m,projection:t.projection||m,clipBounds:i(this.clipBounds),dashTexture:this.texture.bind(),dashScale:this.dashScale/this.arcLength[this.arcLength.length-1],opacity:this.opacity,screenShape:[e.drawingBufferWidth,e.drawingBufferHeight],pixelRatio:this.pixelRatio},n.bind(),n.draw(e.TRIANGLE_STRIP,this.vertexCount)},y.drawPick=function(t){var e=this.gl,r=this.pickShader,n=this.vao;r.bind(),r.uniforms={model:t.model||m,view:t.view||m,projection:t.projection||m,pickId:this.pickId,clipBounds:i(this.clipBounds),screenShape:[e.drawingBufferWidth,e.drawingBufferHeight],pixelRatio:this.pixelRatio},n.bind(),n.draw(e.TRIANGLE_STRIP,this.vertexCount)},y.update=function(t){var e,r;this.dirty=!0;var i=!!t.connectGaps;"dashScale"in t&&(this.dashScale=t.dashScale),"opacity"in t&&(this.opacity=+t.opacity);var o=t.position||t.positions;if(o){var a=t.color||t.colors||[0,0,0,1],s=t.lineWidth||1,l=[],u=[],c=[],f=0,p=0,g=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],v=!1;t:for(e=1;e<o.length;++e){var m=o[e-1],y=o[e];for(u.push(f),c.push(m.slice()),r=0;3>r;++r){if(isNaN(m[r])||isNaN(y[r])||!isFinite(m[r])||!isFinite(y[r])){if(!i&&l.length>0){for(var b=0;24>b;++b)l.push(l[l.length-12]);p+=2,v=!0}continue t}g[0][r]=Math.min(g[0][r],m[r],y[r]),g[1][r]=Math.max(g[1][r],m[r],y[r])}var x,_;Array.isArray(a[0])?(x=a[e-1],_=a[e]):x=_=a,3===x.length&&(x=[x[0],x[1],x[2],1]),3===_.length&&(_=[_[0],_[1],_[2],1]);var w;w=Array.isArray(s)?s[e-1]:s;var A=f;if(f+=n(m,y),v){for(r=0;2>r;++r)l.push(m[0],m[1],m[2],y[0],y[1],y[2],A,w,x[0],x[1],x[2],x[3]);p+=2,v=!1}l.push(m[0],m[1],m[2],y[0],y[1],y[2],A,w,x[0],x[1],x[2],x[3],m[0],m[1],m[2],y[0],y[1],y[2],A,-w,x[0],x[1],x[2],x[3],y[0],y[1],y[2],m[0],m[1],m[2],f,-w,_[0],_[1],_[2],_[3],y[0],y[1],y[2],m[0],m[1],m[2],f,w,_[0],_[1],_[2],_[3]),p+=4}if(this.buffer.update(l),u.push(f),c.push(o[o.length-1].slice()),this.bounds=g,this.vertexCount=p,this.points=c,this.arcLength=u,"dashes"in t){var M=t.dashes,k=M.slice();for(k.unshift(0),e=1;e<k.length;++e)k[e]=k[e-1]+k[e];var T=d(new Array(1024),[256,1,4]);for(e=0;256>e;++e){for(r=0;4>r;++r)T.set(e,0,r,0);1&h.le(k,k[k.length-1]*e/255)?T.set(e,0,0,0):T.set(e,0,0,255)}this.texture.setPixels(T)}}},y.dispose=function(){this.shader.dispose(),this.vao.dispose(),this.buffer.dispose()},y.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=f(t.value[0],t.value[1],t.value[2],0),r=h.le(this.arcLength,e);if(0>r)return null;if(r===this.arcLength.length-1)return new o(this.arcLength[this.arcLength.length-1],this.points[this.points.length-1].slice(),r);for(var n=this.points[r],i=this.points[Math.min(r+1,this.points.length-1)],a=(e-this.arcLength[r])/(this.arcLength[r+1]-this.arcLength[r]),s=1-a,l=[0,0,0],u=0;3>u;++u)l[u]=s*n[u]+a*i[u];var c=Math.min(.5>a?r:r+1,this.points.length-1);return new o(e,l,c,this.points[c])}},{"./lib/shaders":109,"binary-search-bounds":111,"gl-buffer":105,"gl-texture2d":188,"gl-vao":192,"glsl-read-float":112,ndarray:219}],111:[function(t,e,r){arguments[4][9][0].apply(r,arguments)},{dup:9}],112:[function(t,e,r){function n(t,e,r,n){return i[0]=n,i[1]=r,i[2]=e,i[3]=t,o[0]}e.exports=n;var i=new Uint8Array(4),o=new Float32Array(i.buffer)},{}],113:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],f=c*a-s*u,h=-c*o+s*l,d=u*o-a*l,p=r*f+n*h+i*d;return p?(p=1/p,t[0]=f*p,t[1]=(-c*n+i*u)*p,t[2]=(s*n-i*a)*p,t[3]=h*p,t[4]=(c*r-i*l)*p,t[5]=(-s*r+i*o)*p,t[6]=d*p,t[7]=(-u*r+n*l)*p,t[8]=(a*r-n*o)*p,t):null}e.exports=n},{}],114:[function(t,e,r){function n(t){var e=new Float32Array(16);return e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e[4]=t[4],e[5]=t[5],e[6]=t[6],e[7]=t[7],e[8]=t[8],e[9]=t[9],e[10]=t[10],e[11]=t[11],e[12]=t[12],e[13]=t[13],e[14]=t[14],e[15]=t[15],e}e.exports=n},{}],115:[function(t,e,r){function n(){var t=new Float32Array(16);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],116:[function(t,e,r){function n(t){var e=t[0],r=t[1],n=t[2],i=t[3],o=t[4],a=t[5],s=t[6],l=t[7],u=t[8],c=t[9],f=t[10],h=t[11],d=t[12],p=t[13],g=t[14],v=t[15],m=e*a-r*o,y=e*s-n*o,b=e*l-i*o,x=r*s-n*a,_=r*l-i*a,w=n*l-i*s,A=u*p-c*d,M=u*g-f*d,k=u*v-h*d,T=c*g-f*p,E=c*v-h*p,L=f*v-h*g;return m*L-y*E+b*T+x*k-_*M+w*A}e.exports=n},{}],117:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=r+r,s=n+n,l=i+i,u=r*a,c=n*a,f=n*s,h=i*a,d=i*s,p=i*l,g=o*a,v=o*s,m=o*l;return t[0]=1-f-p,t[1]=c+m,t[2]=h-v,t[3]=0,t[4]=c-m,t[5]=1-u-p,t[6]=d+g,t[7]=0,t[8]=h+v,t[9]=d-g,t[10]=1-u-f,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],118:[function(t,e,r){function n(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=n+n,l=i+i,u=o+o,c=n*s,f=n*l,h=n*u,d=i*l,p=i*u,g=o*u,v=a*s,m=a*l,y=a*u;return t[0]=1-(d+g),t[1]=f+y,t[2]=h-m,t[3]=0,t[4]=f-y,t[5]=1-(c+g),t[6]=p+v,t[7]=0,t[8]=h+m,t[9]=p-v,t[10]=1-(c+d),t[11]=0,t[12]=r[0],t[13]=r[1],t[14]=r[2],t[15]=1,t}e.exports=n},{}],119:[function(t,e,r){function n(t){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],120:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],f=e[9],h=e[10],d=e[11],p=e[12],g=e[13],v=e[14],m=e[15],y=r*s-n*a,b=r*l-i*a,x=r*u-o*a,_=n*l-i*s,w=n*u-o*s,A=i*u-o*l,M=c*g-f*p,k=c*v-h*p,T=c*m-d*p,E=f*v-h*g,L=f*m-d*g,S=h*m-d*v,C=y*S-b*L+x*E+_*T-w*k+A*M;return C?(C=1/C,t[0]=(s*S-l*L+u*E)*C,t[1]=(i*L-n*S-o*E)*C,t[2]=(g*A-v*w+m*_)*C,t[3]=(h*w-f*A-d*_)*C,t[4]=(l*T-a*S-u*k)*C,t[5]=(r*S-i*T+o*k)*C,t[6]=(v*x-p*A-m*b)*C,t[7]=(c*A-h*x+d*b)*C,t[8]=(a*L-s*T+u*M)*C,t[9]=(n*T-r*L-o*M)*C,t[10]=(p*w-g*x+m*y)*C,t[11]=(f*x-c*w-d*y)*C,t[12]=(s*k-a*E-l*M)*C,t[13]=(r*E-n*k+i*M)*C,t[14]=(g*b-p*_-v*y)*C,t[15]=(c*_-f*b+h*y)*C,t):null}e.exports=n},{}],121:[function(t,e,r){function n(t,e,r,n){var o,a,s,l,u,c,f,h,d,p,g=e[0],v=e[1],m=e[2],y=n[0],b=n[1],x=n[2],_=r[0],w=r[1],A=r[2];return Math.abs(g-_)<1e-6&&Math.abs(v-w)<1e-6&&Math.abs(m-A)<1e-6?i(t):(f=g-_,h=v-w,d=m-A,p=1/Math.sqrt(f*f+h*h+d*d),f*=p,h*=p,d*=p,o=b*d-x*h,a=x*f-y*d,s=y*h-b*f,p=Math.sqrt(o*o+a*a+s*s),p?(p=1/p,o*=p,a*=p,s*=p):(o=0,a=0,s=0),l=h*s-d*a,u=d*o-f*s,c=f*a-h*o,p=Math.sqrt(l*l+u*u+c*c),p?(p=1/p,l*=p,u*=p,c*=p):(l=0,u=0,c=0),t[0]=o,t[1]=l,t[2]=f,t[3]=0,t[4]=a,t[5]=u,t[6]=h,t[7]=0,t[8]=s,t[9]=c,t[10]=d,t[11]=0,t[12]=-(o*g+a*v+s*m),t[13]=-(l*g+u*v+c*m),t[14]=-(f*g+h*v+d*m),t[15]=1,t)}var i=t("./identity");e.exports=n},{"./identity":119}],122:[function(t,e,r){function n(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],f=e[8],h=e[9],d=e[10],p=e[11],g=e[12],v=e[13],m=e[14],y=e[15],b=r[0],x=r[1],_=r[2],w=r[3];return t[0]=b*n+x*s+_*f+w*g,t[1]=b*i+x*l+_*h+w*v,t[2]=b*o+x*u+_*d+w*m,t[3]=b*a+x*c+_*p+w*y,b=r[4],x=r[5],_=r[6],w=r[7],t[4]=b*n+x*s+_*f+w*g,t[5]=b*i+x*l+_*h+w*v,t[6]=b*o+x*u+_*d+w*m,t[7]=b*a+x*c+_*p+w*y,b=r[8],x=r[9],_=r[10],w=r[11],t[8]=b*n+x*s+_*f+w*g,t[9]=b*i+x*l+_*h+w*v,t[10]=b*o+x*u+_*d+w*m,t[11]=b*a+x*c+_*p+w*y,b=r[12],x=r[13],_=r[14],w=r[15],t[12]=b*n+x*s+_*f+w*g,t[13]=b*i+x*l+_*h+w*v,t[14]=b*o+x*u+_*d+w*m,t[15]=b*a+x*c+_*p+w*y,t}e.exports=n},{}],123:[function(t,e,r){function n(t,e,r,n,i){var o=1/Math.tan(e/2),a=1/(n-i);return t[0]=o/r,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=o,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=(i+n)*a,t[11]=-1,t[12]=0,t[13]=0,t[14]=2*i*n*a,t[15]=0,t}e.exports=n},{}],124:[function(t,e,r){function n(t,e,r,n){var i,o,a,s,l,u,c,f,h,d,p,g,v,m,y,b,x,_,w,A,M,k,T,E,L=n[0],S=n[1],C=n[2],P=Math.sqrt(L*L+S*S+C*C);return Math.abs(P)<1e-6?null:(P=1/P,L*=P,S*=P,C*=P,i=Math.sin(r),o=Math.cos(r),a=1-o,s=e[0],l=e[1],u=e[2],c=e[3],f=e[4],h=e[5],d=e[6],p=e[7],g=e[8],v=e[9],m=e[10],y=e[11],b=L*L*a+o,x=S*L*a+C*i,_=C*L*a-S*i,w=L*S*a-C*i,A=S*S*a+o,M=C*S*a+L*i,k=L*C*a+S*i,T=S*C*a-L*i,E=C*C*a+o,t[0]=s*b+f*x+g*_,t[1]=l*b+h*x+v*_,t[2]=u*b+d*x+m*_,t[3]=c*b+p*x+y*_,t[4]=s*w+f*A+g*M,t[5]=l*w+h*A+v*M,t[6]=u*w+d*A+m*M,t[7]=c*w+p*A+y*M,t[8]=s*k+f*T+g*E,t[9]=l*k+h*T+v*E,t[10]=u*k+d*T+m*E,t[11]=c*k+p*T+y*E,e!==t&&(t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t)}e.exports=n},{}],125:[function(t,e,r){function n(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[4],a=e[5],s=e[6],l=e[7],u=e[8],c=e[9],f=e[10],h=e[11];return e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[4]=o*i+u*n,t[5]=a*i+c*n,t[6]=s*i+f*n,t[7]=l*i+h*n,t[8]=u*i-o*n,t[9]=c*i-a*n,t[10]=f*i-s*n,t[11]=h*i-l*n,t}e.exports=n},{}],126:[function(t,e,r){function n(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[0],a=e[1],s=e[2],l=e[3],u=e[8],c=e[9],f=e[10],h=e[11];return e!==t&&(t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i-u*n,t[1]=a*i-c*n,t[2]=s*i-f*n,t[3]=l*i-h*n,t[8]=o*n+u*i,t[9]=a*n+c*i,t[10]=s*n+f*i,t[11]=l*n+h*i,t}e.exports=n},{}],127:[function(t,e,r){function n(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[0],a=e[1],s=e[2],l=e[3],u=e[4],c=e[5],f=e[6],h=e[7];return e!==t&&(t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i+u*n,t[1]=a*i+c*n,t[2]=s*i+f*n,t[3]=l*i+h*n,t[4]=u*i-o*n,t[5]=c*i-a*n,t[6]=f*i-s*n,t[7]=h*i-l*n,t}e.exports=n},{}],128:[function(t,e,r){function n(t,e,r){var n=r[0],i=r[1],o=r[2];return t[0]=e[0]*n,t[1]=e[1]*n,t[2]=e[2]*n,t[3]=e[3]*n,t[4]=e[4]*i,t[5]=e[5]*i,t[6]=e[6]*i,t[7]=e[7]*i,t[8]=e[8]*o,t[9]=e[9]*o,t[10]=e[10]*o,t[11]=e[11]*o,t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t}e.exports=n},{}],129:[function(t,e,r){function n(t,e,r){var n,i,o,a,s,l,u,c,f,h,d,p,g=r[0],v=r[1],m=r[2];return e===t?(t[12]=e[0]*g+e[4]*v+e[8]*m+e[12],t[13]=e[1]*g+e[5]*v+e[9]*m+e[13],t[14]=e[2]*g+e[6]*v+e[10]*m+e[14],t[15]=e[3]*g+e[7]*v+e[11]*m+e[15]):(n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],f=e[8],h=e[9],d=e[10],p=e[11],t[0]=n,t[1]=i,t[2]=o,t[3]=a,t[4]=s,t[5]=l,t[6]=u,t[7]=c,t[8]=f,t[9]=h,t[10]=d,t[11]=p,t[12]=n*g+s*v+f*m+e[12],t[13]=i*g+l*v+h*m+e[13],t[14]=o*g+u*v+d*m+e[14],t[15]=a*g+c*v+p*m+e[15]),t}e.exports=n},{}],130:[function(t,e,r){function n(t,e){if(t===e){var r=e[1],n=e[2],i=e[3],o=e[6],a=e[7],s=e[11];t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=r,t[6]=e[9],t[7]=e[13],t[8]=n,t[9]=o,t[11]=e[14],t[12]=i,t[13]=a,t[14]=s}else t[0]=e[0],t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=e[1],t[5]=e[5],t[6]=e[9],t[7]=e[13],t[8]=e[2],t[9]=e[6],t[10]=e[10],t[11]=e[14],t[12]=e[3],t[13]=e[7],t[14]=e[11],t[15]=e[15];return t}e.exports=n},{}],131:[function(t,e,r){"use strict";function n(t,e){for(var r=[0,0,0,0],n=0;4>n;++n)for(var i=0;4>i;++i)r[i]+=t[4*n+i]*e[n];return r}function i(t,e,r,i,o){for(var a=n(i,n(r,n(e,[t[0],t[1],t[2],1]))),s=0;3>s;++s)a[s]/=a[3];return[.5*o[0]*(1+a[0]),.5*o[1]*(1-a[1])]}function o(t,e){if(2===t.length){for(var r=0,n=0,i=0;2>i;++i)r+=Math.pow(e[i]-t[0][i],2),n+=Math.pow(e[i]-t[1][i],2);return r=Math.sqrt(r),n=Math.sqrt(n),1e-6>r+n?[1,0]:[n/(r+n),r/(n+r)]}if(3===t.length){var o=[0,0];return u(t[0],t[1],t[2],e,o),l(t,o)}return[]}function a(t,e){for(var r=[0,0,0],n=0;n<t.length;++n)for(var i=t[n],o=e[n],a=0;3>a;++a)r[a]+=o*i[a];return r}function s(t,e,r,n,s,l){if(1===t.length)return[0,t[0].slice()];for(var u=new Array(t.length),c=0;c<t.length;++c)u[c]=i(t[c],r,n,s,l);for(var f=0,h=1/0,c=0;c<u.length;++c){for(var d=0,p=0;2>p;++p)d+=Math.pow(u[c][p]-e[p],2);h>d&&(h=d,f=c)}for(var g=o(u,e),v=0,c=0;3>c;++c){if(g[c]<-.001||g[c]>1.0001)return null;v+=g[c]}return Math.abs(v-1)>.001?null:[f,a(t,g),g]}var l=t("barycentric"),u=t("polytope-closest-point/lib/closest_point_2d.js");e.exports=s},{barycentric:134,"polytope-closest-point/lib/closest_point_2d.js":136}],132:[function(t,e,r){var n="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, normal;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model\n           , view\n           , projection;\nuniform vec3 eyePosition\n           , lightPosition;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec4 m_position  = model * vec4(position, 1.0);\n  vec4 t_position  = view * m_position;\n  gl_Position      = projection * t_position;\n  f_color          = color;\n  f_normal         = normal;\n  f_data           = position;\n  f_eyeDirection   = eyePosition   - position;\n  f_lightDirection = lightPosition - position;\n  f_uv             = uv;\n}",i="precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat cookTorranceSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness,\n  float fresnel) {\n\n  float VdotN = max(dot(viewDirection, surfaceNormal), 0.0);\n  float LdotN = max(dot(lightDirection, surfaceNormal), 0.0);\n\n  //Half angle vector\n  vec3 H = normalize(lightDirection + viewDirection);\n\n  //Geometric term\n  float NdotH = max(dot(surfaceNormal, H), 0.0);\n  float VdotH = max(dot(viewDirection, H), 0.000001);\n  float LdotH = max(dot(lightDirection, H), 0.000001);\n  float G1 = (2.0 * NdotH * VdotN) / VdotH;\n  float G2 = (2.0 * NdotH * LdotN) / LdotH;\n  float G = min(1.0, min(G1, G2));\n  \n  //Distribution term\n  float D = beckmannDistribution_2_0(NdotH, roughness);\n\n  //Fresnel term\n  float F = pow(1.0 - VdotN, fresnel);\n\n  //Multiply terms and done\n  return  G * F * D / max(3.14159265 * VdotN, 0.000001);\n}\n\n\n\nuniform vec3 clipBounds[2];\nuniform float roughness\n            , fresnel\n            , kambient\n            , kdiffuse\n            , kspecular\n            , opacity;\nuniform sampler2D texture;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(f_normal);\n  vec3 L = normalize(f_lightDirection);\n  vec3 V = normalize(f_eyeDirection);\n  \n  if(!gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = cookTorranceSpecular_1_1(L, V, N, roughness, fresnel);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = f_color * texture2D(texture, f_uv);\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = litColor * opacity;\n}",o="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model, view, projection;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_color = color;\n  f_data  = position;\n  f_uv    = uv;\n}",a="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 clipBounds[2];\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}",s="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\nattribute float pointSize;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position = projection * view * model * vec4(position, 1.0);\n  }\n  gl_PointSize = pointSize;\n  f_color = color;\n  f_uv = uv;\n}",l="precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec2 pointR = gl_PointCoord.xy - vec2(0.5,0.5);\n  if(dot(pointR, pointR) > 0.25) {\n    discard;\n  }\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}",u="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_id        = id;\n  f_position  = position;\n}",c="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3  clipBounds[2];\nuniform float pickId;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(f_position, clipBounds[0])) || \n     any(greaterThan(f_position, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId, f_id.xyz);\n}",f="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3  position;\nattribute float pointSize;\nattribute vec4  id;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position  = projection * view * model * vec4(position, 1.0);\n    gl_PointSize = pointSize;\n  }\n  f_id         = id;\n  f_position   = position;\n}",h="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n}",d="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 contourColor;\n\nvoid main() {\n  gl_FragColor = vec4(contourColor,1);\n}\n";r.meshShader={vertex:n,fragment:i,attributes:[{name:"position",type:"vec3"},{name:"normal",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"}]},r.wireShader={vertex:o,fragment:a,attributes:[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"}]},r.pointShader={vertex:s,fragment:l,attributes:[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"},{name:"pointSize",type:"float"}]},r.pickShader={vertex:u,fragment:c,attributes:[{name:"position",type:"vec3"},{name:"id",type:"vec4"}]},r.pointPickShader={vertex:f,fragment:c,attributes:[{name:"position",type:"vec3"},{name:"pointSize",type:"float"},{name:"id",type:"vec4"}]},r.contourShader={vertex:h,fragment:d,attributes:[{name:"position",type:"vec3"}]}},{}],133:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s,l,u,c,f,h,d,p,g,v,m,y,b,x,_,w,A,M,k,T){this.gl=t,this.cells=[],this.positions=[],this.intensity=[],this.texture=e,this.dirty=!0,this.triShader=r,this.lineShader=n,this.pointShader=i,this.pickShader=o,this.pointPickShader=a,this.contourShader=s,this.trianglePositions=l,this.triangleColors=c,this.triangleNormals=h,this.triangleUVs=f,this.triangleIds=u,this.triangleVAO=d,this.triangleCount=0,this.lineWidth=1,this.edgePositions=p,this.edgeColors=v,this.edgeUVs=m,this.edgeIds=g,this.edgeVAO=y,this.edgeCount=0,this.pointPositions=b,this.pointColors=_,this.pointUVs=w,this.pointSizes=A,this.pointIds=x,this.pointVAO=M,this.pointCount=0,this.contourLineWidth=1,this.contourPositions=k,this.contourVAO=T,this.contourCount=0,this.contourColor=[0,0,0],this.contourEnable=!0,this.pickId=1,this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.lightPosition=[1e5,1e5,0],this.ambientLight=.8,this.diffuseLight=.8,this.specularLight=2,this.roughness=.5,this.fresnel=1.5,this.opacity=1,this._model=I,this._view=I,this._projection=I,this._resolution=[1,1]}function i(t){for(var e=M({colormap:t,nshades:256,format:"rgba"}),r=new Uint8Array(1024),n=0;256>n;++n){for(var i=e[n],o=0;3>o;++o)r[4*n+o]=i[o];r[4*n+3]=255*i[3]}return A(r,[256,256,4],[4,0,1])}function o(t,e,r){for(var n=new Array(e),i=0;e>i;++i)n[i]=0;for(var o=t.length,i=0;o>i;++i)for(var a=t[i],s=0;s<a.length;++s)n[a[s]]=r[i];return n}function a(t){for(var e=t.length,r=new Array(e),n=0;e>n;++n)r[n]=t[n][2];return r}function s(t){var e=v(t,S);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e.attributes.normal.location=4,e}function l(t){var e=v(t,C);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e}function u(t){var e=v(t,P);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e.attributes.pointSize.location=4,e}function c(t){var e=v(t,R);return e.attributes.position.location=0,e.attributes.id.location=1,e}function f(t){var e=v(t,N);return e.attributes.position.location=0,e.attributes.id.location=1,e.attributes.pointSize.location=4,e}function h(t){var e=v(t,z);return e.attributes.position.location=0,e}function d(t){var e=t.gl,r=s(e),i=l(e),o=u(e),a=c(e),d=f(e),p=h(e),g=b(e,A(new Uint8Array([255,255,255,255]),[1,1,4]));g.generateMipmap(),g.minFilter=e.LINEAR_MIPMAP_LINEAR,g.magFilter=e.LINEAR;var v=m(e),x=m(e),_=m(e),w=m(e),M=m(e),k=y(e,[{buffer:v,type:e.FLOAT,size:3},{buffer:M,type:e.UNSIGNED_BYTE,size:4,normalized:!0},{buffer:x,type:e.FLOAT,size:4},{buffer:_,type:e.FLOAT,size:2},{buffer:w,type:e.FLOAT,size:3}]),T=m(e),E=m(e),L=m(e),S=m(e),C=y(e,[{buffer:T,type:e.FLOAT,size:3},{buffer:S,type:e.UNSIGNED_BYTE,size:4,normalized:!0},{buffer:E,type:e.FLOAT,size:4},{buffer:L,type:e.FLOAT,size:2}]),P=m(e),R=m(e),N=m(e),z=m(e),I=m(e),O=y(e,[{buffer:P,type:e.FLOAT,size:3},{buffer:I,type:e.UNSIGNED_BYTE,size:4,normalized:!0},{buffer:R,type:e.FLOAT,size:4},{buffer:N,type:e.FLOAT,size:2},{buffer:z,type:e.FLOAT,size:1}]),j=m(e),D=y(e,[{buffer:j,type:e.FLOAT,size:3}]),F=new n(e,g,r,i,o,a,d,p,v,M,x,_,w,k,T,S,E,L,C,P,I,R,N,z,O,j,D);return F.update(t),F}var p=1e-6,g=1e-6,v=t("gl-shader"),m=t("gl-buffer"),y=t("gl-vao"),b=t("gl-texture2d"),x=t("normals"),_=t("gl-mat4/multiply"),w=t("gl-mat4/invert"),A=t("ndarray"),M=t("colormap"),k=t("simplicial-complex-contour"),T=t("typedarray-pool"),E=t("./lib/shaders"),L=t("./lib/closest-point"),S=E.meshShader,C=E.wireShader,P=E.pointShader,R=E.pickShader,N=E.pointPickShader,z=E.contourShader,I=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],O=n.prototype;O.isOpaque=function(){return this.opacity>=1},O.isTransparent=function(){return this.opacity<1},O.pickSlots=1,O.setPickBase=function(t){this.pickId=t},O.highlight=function(t){if(!t||!this.contourEnable)return void(this.contourCount=0);for(var e=k(this.cells,this.intensity,t.intensity),r=e.cells,n=e.vertexIds,i=e.vertexWeights,o=r.length,a=T.mallocFloat32(6*o),s=0,l=0;o>l;++l)for(var u=r[l],c=0;2>c;++c){var f=u[0];2===u.length&&(f=u[c]);for(var h=n[f][0],d=n[f][1],p=i[f],g=1-p,v=this.positions[h],m=this.positions[d],y=0;3>y;++y)a[s++]=p*v[y]+g*m[y]}this.contourCount=s/3|0,this.contourPositions.update(a.subarray(0,s)),T.free(a)},O.update=function(t){t=t||{};var e=this.gl;this.dirty=!0,"contourEnable"in t&&(this.contourEnable=t.contourEnable),"contourColor"in t&&(this.contourColor=t.contourColor),"lineWidth"in t&&(this.lineWidth=t.lineWidth),"lightPosition"in t&&(this.lightPosition=t.lightPosition),"opacity"in t&&(this.opacity=t.opacity),"ambient"in t&&(this.ambientLight=t.ambient),"diffuse"in t&&(this.diffuseLight=t.diffuse),"specular"in t&&(this.specularLight=t.specular),"roughness"in t&&(this.roughness=t.roughness),"fresnel"in t&&(this.fresnel=t.fresnel),t.texture?(this.texture.dispose(),this.texture=b(e,t.texture)):t.colormap&&(this.texture.shape=[256,256],this.texture.minFilter=e.LINEAR_MIPMAP_LINEAR,this.texture.magFilter=e.LINEAR,this.texture.setPixels(i(t.colormap)),this.texture.generateMipmap());var r=t.cells,n=t.positions;if(n&&r){var s=[],l=[],u=[],c=[],f=[],h=[],d=[],v=[],m=[],y=[],_=[],w=[],A=[],M=[];this.cells=r,this.positions=n;var k=t.vertexNormals,T=t.cellNormals,E=void 0===t.vertexNormalsEpsilon?p:t.vertexNormalsEpsilon,L=void 0===t.faceNormalsEpsilon?g:t.faceNormalsEpsilon;t.useFacetNormals&&!T&&(T=x.faceNormals(r,n,L)),T||k||(k=x.vertexNormals(r,n,E));var S=t.vertexColors,C=t.cellColors,P=t.meshColor||[1,1,1,1],R=t.vertexUVs,N=t.vertexIntensity,z=t.cellUVs,I=t.cellIntensity,O=1/0,j=-(1/0);if(!R&&!z)if(N)for(var D=0;D<N.length;++D){var F=N[D];O=Math.min(O,F),j=Math.max(j,F)}else if(I)for(var D=0;D<I.length;++D){var F=I[D];O=Math.min(O,F),j=Math.max(j,F)}else for(var D=0;D<n.length;++D){var F=n[D][2];O=Math.min(O,F),j=Math.max(j,F)}N?this.intensity=N:I?this.intensity=o(r,n.length,I):this.intensity=a(n);var B=t.pointSizes,U=t.pointSize||1;this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]];for(var D=0;D<n.length;++D)for(var V=n[D],q=0;3>q;++q)!isNaN(V[q])&&isFinite(V[q])&&(this.bounds[0][q]=Math.min(this.bounds[0][q],V[q]),this.bounds[1][q]=Math.max(this.bounds[1][q],V[q]));var H=0,G=0,X=0;t:for(var D=0;D<r.length;++D){var Y=r[D];switch(Y.length){case 1:for(var W=Y[0],V=n[W],q=0;3>q;++q)if(isNaN(V[q])||!isFinite(V[q]))continue t;y.push(V[0],V[1],V[2]);var Z;Z=S?S[W]:C?C[D]:P,3===Z.length?_.push(Z[0],Z[1],Z[2],1):_.push(Z[0],Z[1],Z[2],Z[3]);var Q;Q=R?R[W]:N?[(N[W]-O)/(j-O),0]:z?z[D]:I?[(I[D]-O)/(j-O),0]:[(V[2]-O)/(j-O),0],w.push(Q[0],Q[1]),B?A.push(B[W]):A.push(U),M.push(D),X+=1;break;case 2:for(var q=0;2>q;++q)for(var W=Y[q],V=n[W],$=0;3>$;++$)if(isNaN(V[$])||!isFinite(V[$]))continue t;
+-for(var q=0;2>q;++q){var W=Y[q],V=n[W];h.push(V[0],V[1],V[2]);var Z;Z=S?S[W]:C?C[D]:P,3===Z.length?d.push(Z[0],Z[1],Z[2],1):d.push(Z[0],Z[1],Z[2],Z[3]);var Q;Q=R?R[W]:N?[(N[W]-O)/(j-O),0]:z?z[D]:I?[(I[D]-O)/(j-O),0]:[(V[2]-O)/(j-O),0],v.push(Q[0],Q[1]),m.push(D)}G+=1;break;case 3:for(var q=0;3>q;++q)for(var W=Y[q],V=n[W],$=0;3>$;++$)if(isNaN(V[$])||!isFinite(V[$]))continue t;for(var q=0;3>q;++q){var W=Y[q],V=n[W];s.push(V[0],V[1],V[2]);var Z;Z=S?S[W]:C?C[D]:P,3===Z.length?l.push(Z[0],Z[1],Z[2],1):l.push(Z[0],Z[1],Z[2],Z[3]);var Q;Q=R?R[W]:N?[(N[W]-O)/(j-O),0]:z?z[D]:I?[(I[D]-O)/(j-O),0]:[(V[2]-O)/(j-O),0],c.push(Q[0],Q[1]);var K;K=k?k[W]:T[D],u.push(K[0],K[1],K[2]),f.push(D)}H+=1}}this.pointCount=X,this.edgeCount=G,this.triangleCount=H,this.pointPositions.update(y),this.pointColors.update(_),this.pointUVs.update(w),this.pointSizes.update(A),this.pointIds.update(new Uint32Array(M)),this.edgePositions.update(h),this.edgeColors.update(d),this.edgeUVs.update(v),this.edgeIds.update(new Uint32Array(m)),this.trianglePositions.update(s),this.triangleColors.update(l),this.triangleUVs.update(c),this.triangleNormals.update(u),this.triangleIds.update(new Uint32Array(f))}},O.drawTransparent=O.draw=function(t){t=t||{};for(var e=this.gl,r=t.model||I,n=t.view||I,i=t.projection||I,o=[[-1e6,-1e6,-1e6],[1e6,1e6,1e6]],a=0;3>a;++a)o[0][a]=Math.max(o[0][a],this.clipBounds[0][a]),o[1][a]=Math.min(o[1][a],this.clipBounds[1][a]);var s={model:r,view:n,projection:i,clipBounds:o,kambient:this.ambientLight,kdiffuse:this.diffuseLight,kspecular:this.specularLight,roughness:this.roughness,fresnel:this.fresnel,eyePosition:[0,0,0],lightPosition:[0,0,0],opacity:this.opacity,contourColor:this.contourColor,texture:0};this.texture.bind(0);var l=new Array(16);_(l,s.view,s.model),_(l,s.projection,l),w(l,l);for(var a=0;3>a;++a)s.eyePosition[a]=l[12+a]/l[15];for(var u=l[15],a=0;3>a;++a)u+=this.lightPosition[a]*l[4*a+3];for(var a=0;3>a;++a){for(var c=l[12+a],f=0;3>f;++f)c+=l[4*f+a]*this.lightPosition[f];s.lightPosition[a]=c/u}if(this.triangleCount>0){var h=this.triShader;h.bind(),h.uniforms=s,this.triangleVAO.bind(),e.drawArrays(e.TRIANGLES,0,3*this.triangleCount),this.triangleVAO.unbind()}if(this.edgeCount>0&&this.lineWidth>0){var h=this.lineShader;h.bind(),h.uniforms=s,this.edgeVAO.bind(),e.lineWidth(this.lineWidth),e.drawArrays(e.LINES,0,2*this.edgeCount),this.edgeVAO.unbind()}if(this.pointCount>0){var h=this.pointShader;h.bind(),h.uniforms=s,this.pointVAO.bind(),e.drawArrays(e.POINTS,0,this.pointCount),this.pointVAO.unbind()}if(this.contourEnable&&this.contourCount>0&&this.contourLineWidth>0){var h=this.contourShader;h.bind(),h.uniforms=s,this.contourVAO.bind(),e.drawArrays(e.LINES,0,this.contourCount),this.contourVAO.unbind()}},O.drawPick=function(t){t=t||{};for(var e=this.gl,r=t.model||I,n=t.view||I,i=t.projection||I,o=[[-1e6,-1e6,-1e6],[1e6,1e6,1e6]],a=0;3>a;++a)o[0][a]=Math.max(o[0][a],this.clipBounds[0][a]),o[1][a]=Math.min(o[1][a],this.clipBounds[1][a]);this._model=[].slice.call(r),this._view=[].slice.call(n),this._projection=[].slice.call(i),this._resolution=[e.drawingBufferWidth,e.drawingBufferHeight];var s={model:r,view:n,projection:i,clipBounds:o,pickId:this.pickId/255},l=this.pickShader;if(l.bind(),l.uniforms=s,this.triangleCount>0&&(this.triangleVAO.bind(),e.drawArrays(e.TRIANGLES,0,3*this.triangleCount),this.triangleVAO.unbind()),this.edgeCount>0&&(this.edgeVAO.bind(),e.lineWidth(this.lineWidth),e.drawArrays(e.LINES,0,2*this.edgeCount),this.edgeVAO.unbind()),this.pointCount>0){var l=this.pointPickShader;l.bind(),l.uniforms=s,this.pointVAO.bind(),e.drawArrays(e.POINTS,0,this.pointCount),this.pointVAO.unbind()}},O.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;for(var e=t.value[0]+256*t.value[1]+65536*t.value[2],r=this.cells[e],n=this.positions,i=new Array(r.length),o=0;o<r.length;++o)i[o]=n[r[o]];var a=L(i,[t.coord[0],this._resolution[1]-t.coord[1]],this._model,this._view,this._projection,this._resolution);if(!a)return null;for(var s=a[2],l=0,o=0;o<r.length;++o)l+=s[o]*this.intensity[r[o]];return{position:a[1],index:r[a[0]],cell:r,cellId:e,intensity:l,dataCoordinate:this.positions[r[a[0]]]}},O.dispose=function(){this.texture.dispose(),this.triShader.dispose(),this.lineShader.dispose(),this.pointShader.dispose(),this.pickShader.dispose(),this.pointPickShader.dispose(),this.triangleVAO.dispose(),this.trianglePositions.dispose(),this.triangleColors.dispose(),this.triangleUVs.dispose(),this.triangleNormals.dispose(),this.triangleIds.dispose(),this.edgeVAO.dispose(),this.edgePositions.dispose(),this.edgeColors.dispose(),this.edgeUVs.dispose(),this.edgeIds.dispose(),this.pointVAO.dispose(),this.pointPositions.dispose(),this.pointColors.dispose(),this.pointUVs.dispose(),this.pointSizes.dispose(),this.pointIds.dispose(),this.contourVAO.dispose(),this.contourPositions.dispose(),this.contourShader.dispose()},e.exports=d},{"./lib/closest-point":131,"./lib/shaders":132,colormap:88,"gl-buffer":105,"gl-mat4/invert":120,"gl-mat4/multiply":122,"gl-shader":164,"gl-texture2d":188,"gl-vao":192,ndarray:219,normals:135,"simplicial-complex-contour":137,"typedarray-pool":242}],134:[function(t,e,r){"use 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S=(M+1+L)%3,C=(M+1+(1^L))%3;this.zeroEnable[C]&&s[0][C]<=0&&s[1][C]>=0&&this._lines.drawZero(S,C,this.bounds,E,this.zeroLineColor[C],this.zeroLineWidth[C]*this.pixelRatio)}}for(var M=0;3>M;++M){this.lineEnable[M]&&this._lines.drawAxisLine(M,this.bounds,k[M].primalOffset,this.lineColor[M],this.lineWidth[M]*this.pixelRatio),this.lineMirror[M]&&this._lines.drawAxisLine(M,this.bounds,k[M].mirrorOffset,this.lineColor[M],this.lineWidth[M]*this.pixelRatio);for(var P=n(y,k[M].primalMinor),R=n(b,k[M].mirrorMinor),N=this.lineTickLength,L=0;3>L;++L){var z=A/r[5*L];P[L]*=N[L]*z,R[L]*=N[L]*z}this.lineTickEnable[M]&&this._lines.drawAxisTicks(M,k[M].primalOffset,P,this.lineTickColor[M],this.lineTickWidth[M]*this.pixelRatio),this.lineTickMirror[M]&&this._lines.drawAxisTicks(M,k[M].mirrorOffset,R,this.lineTickColor[M],this.lineTickWidth[M]*this.pixelRatio)}this._text.bind(r,i,o,this.pixelRatio);for(var M=0;3>M;++M){for(var I=k[M].primalMinor,O=n(x,k[M].primalOffset),L=0;3>L;++L)this.lineTickEnable[M]&&(O[L]+=A*I[L]*Math.max(this.lineTickLength[L],0)/r[5*L]);if(this.tickEnable[M]){for(var L=0;3>L;++L)O[L]+=A*I[L]*this.tickPad[L]/r[5*L];this._text.drawTicks(M,this.tickSize[M],this.tickAngle[M],O,this.tickColor[M])}if(this.labelEnable[M]){for(var L=0;3>L;++L)O[L]+=A*I[L]*this.labelPad[L]/r[5*L];O[M]+=.5*(s[0][M]+s[1][M]),this._text.drawLabel(M,this.labelSize[M],this.labelAngle[M],O,this.labelColor[M])}}},p.dispose=function(){this._text.dispose(),this._lines.dispose(),this._background.dispose(),this._lines=null,this._text=null,this._background=null,this.gl=null}},{"./lib/background.js":147,"./lib/cube.js":148,"./lib/lines.js":149,"./lib/text.js":151,"./lib/ticks.js":152}],147:[function(t,e,r){"use strict";function n(t,e,r,n){this.gl=t,this.buffer=e,this.vao=r,this.shader=n}function i(t){for(var e=[],r=[],i=0,l=0;3>l;++l)for(var u=(l+1)%3,c=(l+2)%3,f=[0,0,0],h=[0,0,0],d=-1;1>=d;d+=2){r.push(i,i+2,i+1,i+1,i+2,i+3),f[l]=d,h[l]=d;for(var p=-1;1>=p;p+=2){f[u]=p;for(var g=-1;1>=g;g+=2)f[c]=g,e.push(f[0],f[1],f[2],h[0],h[1],h[2]),i+=1}var v=u;u=c,c=v}var m=o(t,new Float32Array(e)),y=o(t,new Uint16Array(r),t.ELEMENT_ARRAY_BUFFER),b=a(t,[{buffer:m,type:t.FLOAT,size:3,offset:0,stride:24},{buffer:m,type:t.FLOAT,size:3,offset:12,stride:24}],y),x=s(t);return x.attributes.position.location=0,x.attributes.normal.location=1,new n(t,m,b,x)}e.exports=i;var o=t("gl-buffer"),a=t("gl-vao"),s=t("./shaders").bg,l=n.prototype;l.draw=function(t,e,r,n,i,o){for(var a=!1,s=0;3>s;++s)a=a||i[s];if(a){var l=this.gl;l.enable(l.POLYGON_OFFSET_FILL),l.polygonOffset(1,2),this.shader.bind(),this.shader.uniforms={model:t,view:e,projection:r,bounds:n,enable:i,colors:o},this.vao.bind(),this.vao.draw(this.gl.TRIANGLES,36),l.disable(l.POLYGON_OFFSET_FILL)}},l.dispose=function(){this.vao.dispose(),this.buffer.dispose(),this.shader.dispose()}},{"./shaders":150,"gl-buffer":105,"gl-vao":192}],148:[function(t,e,r){"use strict";function n(t,e,r){for(var n=0;4>n;++n){t[n]=r[12+n];for(var i=0;3>i;++i)t[n]+=e[i]*r[4*i+n]}}function i(t){for(var e=0;e<g.length;++e)if(t=l.positive(t,g[e]),t.length<3)return 0;for(var r=t[0],n=r[0]/r[3],i=r[1]/r[3],o=0,e=1;e+1<t.length;++e){var a=t[e],s=t[e+1],u=a[0]/a[3],c=a[1]/a[3],f=s[0]/s[3],h=s[1]/s[3],d=u-n,p=c-i,v=f-n,m=h-i;o+=Math.abs(d*m-p*v)}return o}function o(t,e,r,o){s(c,e,t),s(c,r,c);for(var l=0,g=0;2>g;++g){d[2]=o[g][2];for(var b=0;2>b;++b){d[1]=o[b][1];for(var x=0;2>x;++x)d[0]=o[x][0],n(f[l],d,c),l+=1}}for(var _=-1,g=0;8>g;++g){for(var w=f[g][3],A=0;3>A;++A)h[g][A]=f[g][A]/w;0>w&&(0>_?_=g:h[g][2]<h[_][2]&&(_=g))}if(0>_){_=0;for(var M=0;3>M;++M){for(var k=(M+2)%3,T=(M+1)%3,E=-1,L=-1,S=0;2>S;++S){var C=S<<M,P=C+(S<<k)+(1-S<<T),R=C+(1-S<<k)+(S<<T);u(h[C],h[P],h[R],p)<0||(S?E=1:L=1)}if(0>E||0>L)L>E&&(_|=1<<M);else{for(var S=0;2>S;++S){var C=S<<M,P=C+(S<<k)+(1-S<<T),R=C+(1-S<<k)+(S<<T),N=i([f[C],f[P],f[R],f[C+(1<<k)+(1<<T)]]);S?E=N:L=N}L>E&&(_|=1<<M)}}}for(var z=7^_,I=-1,g=0;8>g;++g)g!==_&&g!==z&&(0>I?I=g:h[I][1]>h[g][1]&&(I=g));for(var O=-1,g=0;3>g;++g){var j=I^1<<g;if(j!==_&&j!==z){0>O&&(O=j);var T=h[j];T[0]<h[O][0]&&(O=j)}}for(var D=-1,g=0;3>g;++g){var j=I^1<<g;if(j!==_&&j!==z&&j!==O){0>D&&(D=j);var T=h[j];T[0]>h[D][0]&&(D=j)}}var F=v;F[0]=F[1]=F[2]=0,F[a.log2(O^I)]=I&O,F[a.log2(I^D)]=I&D;var B=7^D;B===_||B===z?(B=7^O,F[a.log2(D^B)]=B&D):F[a.log2(O^B)]=B&O;for(var U=m,V=_,M=0;3>M;++M)V&1<<M?U[M]=-1:U[M]=1;return y}e.exports=o;var a=t("bit-twiddle"),s=t("gl-mat4/multiply"),l=(t("gl-mat4/invert"),t("split-polygon")),u=t("robust-orientation"),c=new Array(16),f=(new Array(16),new Array(8)),h=new Array(8),d=new Array(3),p=[0,0,0];!function(){for(var t=0;8>t;++t)f[t]=[1,1,1,1],h[t]=[1,1,1]}();var g=[[0,0,1,0,0],[0,0,-1,1,0],[0,-1,0,1,0],[0,1,0,1,0],[-1,0,0,1,0],[1,0,0,1,0]],v=[1,1,1],m=[0,0,0],y={cubeEdges:v,axis:m}},{"bit-twiddle":38,"gl-mat4/invert":120,"gl-mat4/multiply":122,"robust-orientation":225,"split-polygon":154}],149:[function(t,e,r){"use strict";function n(t){return t[0]=t[1]=t[2]=0,t}function i(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t}function o(t,e,r,n,i,o,a,s){this.gl=t,this.vertBuffer=e,this.vao=r,this.shader=n,this.tickCount=i,this.tickOffset=o,this.gridCount=a,this.gridOffset=s}function a(t,e,r){var n=[],i=[0,0,0],a=[0,0,0],c=[0,0,0],f=[0,0,0];n.push(0,0,1,0,1,1,0,0,-1,0,0,-1,0,1,1,0,1,-1);for(var h=0;3>h;++h){for(var d=n.length/3|0,p=0;p<r[h].length;++p){var g=+r[h][p].x;n.push(g,0,1,g,1,1,g,0,-1,g,0,-1,g,1,1,g,1,-1)}var v=n.length/3|0;i[h]=d,a[h]=v-d;for(var d=n.length/3|0,m=0;m<r[h].length;++m){var g=+r[h][m].x;n.push(g,0,1,g,1,1,g,0,-1,g,0,-1,g,1,1,g,1,-1)}var v=n.length/3|0;c[h]=d,f[h]=v-d}var y=s(t,new Float32Array(n)),b=l(t,[{buffer:y,type:t.FLOAT,size:3,stride:0,offset:0}]),x=u(t);return x.attributes.position.location=0,new o(t,y,b,x,a,i,f,c)}e.exports=a;var s=t("gl-buffer"),l=t("gl-vao"),u=t("./shaders").line,c=[0,0,0],f=[0,0,0],h=[0,0,0],d=[0,0,0],p=[1,1],g=o.prototype;g.bind=function(t,e,r){this.shader.bind(),this.shader.uniforms.model=t,this.shader.uniforms.view=e,this.shader.uniforms.projection=r,p[0]=this.gl.drawingBufferWidth,p[1]=this.gl.drawingBufferHeight,this.shader.uniforms.screenShape=p,this.vao.bind()},g.drawAxisLine=function(t,e,r,o,a){var s=n(f);this.shader.uniforms.majorAxis=f,s[t]=e[1][t]-e[0][t],this.shader.uniforms.minorAxis=s;var l=i(d,r);l[t]+=e[0][t],this.shader.uniforms.offset=l,this.shader.uniforms.lineWidth=a,this.shader.uniforms.color=o;var u=n(h);u[(t+2)%3]=1,this.shader.uniforms.screenAxis=u,this.vao.draw(this.gl.TRIANGLES,6);var u=n(h);u[(t+1)%3]=1,this.shader.uniforms.screenAxis=u,this.vao.draw(this.gl.TRIANGLES,6)},g.drawAxisTicks=function(t,e,r,i,o){if(this.tickCount[t]){var a=n(c);a[t]=1,this.shader.uniforms.majorAxis=a,this.shader.uniforms.offset=e,this.shader.uniforms.minorAxis=r,this.shader.uniforms.color=i,this.shader.uniforms.lineWidth=o;var s=n(h);s[t]=1,this.shader.uniforms.screenAxis=s,this.vao.draw(this.gl.TRIANGLES,this.tickCount[t],this.tickOffset[t])}},g.drawGrid=function(t,e,r,o,a,s){if(this.gridCount[t]){var l=n(f);l[e]=r[1][e]-r[0][e],this.shader.uniforms.minorAxis=l;var u=i(d,o);u[e]+=r[0][e],this.shader.uniforms.offset=u;var p=n(c);p[t]=1,this.shader.uniforms.majorAxis=p;var g=n(h);g[t]=1,this.shader.uniforms.screenAxis=g,this.shader.uniforms.lineWidth=s,this.shader.uniforms.color=a,this.vao.draw(this.gl.TRIANGLES,this.gridCount[t],this.gridOffset[t])}},g.drawZero=function(t,e,r,o,a,s){var l=n(f);this.shader.uniforms.majorAxis=l,l[t]=r[1][t]-r[0][t],this.shader.uniforms.minorAxis=l;var u=i(d,o);u[t]+=r[0][t],this.shader.uniforms.offset=u;var c=n(h);c[e]=1,this.shader.uniforms.screenAxis=c,this.shader.uniforms.lineWidth=s,this.shader.uniforms.color=a,this.vao.draw(this.gl.TRIANGLES,6)},g.dispose=function(){this.vao.dispose(),this.vertBuffer.dispose(),this.shader.dispose()}},{"./shaders":150,"gl-buffer":105,"gl-vao":192}],150:[function(t,e,r){"use strict";var n=t("gl-shader"),i="#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, majorAxis, minorAxis, screenAxis;\nuniform float lineWidth;\nuniform vec2 screenShape;\n\nvec3 project(vec3 p) {\n  vec4 pp = projection * view * model * vec4(p, 1.0);\n  return pp.xyz / max(pp.w, 0.0001);\n}\n\nvoid main() {\n  vec3 major = position.x * majorAxis;\n  vec3 minor = position.y * minorAxis;\n\n  vec3 vPosition = major + minor + offset;\n  vec3 pPosition = project(vPosition);\n  vec3 offset = project(vPosition + screenAxis * position.z);\n\n  vec2 screen = normalize((offset - pPosition).xy * screenShape) / screenShape;\n\n  gl_Position = vec4(pPosition + vec3(0.5 * screen * lineWidth, 0), 1.0);\n}\n",o="precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}";r.line=function(t){return n(t,i,o,null,[{name:"position",type:"vec3"}])};var a="#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, axis;\nuniform float scale, angle, pixelScale;\nuniform vec2 resolution;\n\nvoid main() {  \n  //Compute plane offset\n  vec2 planeCoord = position.xy * pixelScale;\n  mat2 planeXform = scale * mat2(cos(angle), sin(angle),\n                                -sin(angle), cos(angle));\n  vec2 viewOffset = 2.0 * planeXform * planeCoord / resolution;\n\n  //Compute world offset\n  float axisDistance = position.z;\n  vec3 dataPosition = axisDistance * axis + offset;\n  vec4 worldPosition = model * vec4(dataPosition, 1);\n  \n  //Compute clip position\n  vec4 viewPosition = view * worldPosition;\n  vec4 clipPosition = projection * viewPosition;\n  clipPosition /= clipPosition.w;\n\n  //Apply text offset in clip coordinates\n  clipPosition += vec4(viewOffset, 0, 0);\n\n  //Done\n  gl_Position = clipPosition;\n}",s="precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}";r.text=function(t){return n(t,a,s,null,[{name:"position",type:"vec3"}])};var l="#define GLSLIFY 1\nattribute vec3 position;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection;\nuniform vec3 enable;\nuniform vec3 bounds[2];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  if(dot(normal, enable) > 0.0) {\n    vec3 nPosition = mix(bounds[0], bounds[1], 0.5 * (position + 1.0));\n    gl_Position = projection * view * model * vec4(nPosition, 1.0);\n  } else {\n    gl_Position = vec4(0,0,0,0);\n  }\n  colorChannel = abs(normal);\n}",u="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 colors[3];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  gl_FragColor = colorChannel.x * colors[0] + \n                 colorChannel.y * colors[1] +\n                 colorChannel.z * colors[2];\n}";r.bg=function(t){return n(t,l,u,null,[{name:"position",type:"vec3"},{name:"normal",type:"vec3"}])}},{"gl-shader":164}],151:[function(t,e,r){(function(r){"use strict";function n(t,e,r,n){this.gl=t,this.shader=e,this.buffer=r,this.vao=n,this.tickOffset=this.tickCount=this.labelOffset=this.labelCount=null}function i(t,e){try{return l(t,e)}catch(r){return console.warn("error vectorizing text:",r),{cells:[],positions:[]}}}function o(t,e,r,i,o,l){var c=a(t),f=s(t,[{buffer:c,size:3}]),h=u(t);h.attributes.position.location=0;var d=new n(t,h,c,f);return d.update(e,r,i,o,l),d}e.exports=o;var a=t("gl-buffer"),s=t("gl-vao"),l=t("vectorize-text"),u=t("./shaders").text,c=window||r.global||{},f=c.__TEXT_CACHE||{};c.__TEXT_CACHE={};var h=3,d=n.prototype,p=[0,0];d.bind=function(t,e,r,n){this.vao.bind(),this.shader.bind();var i=this.shader.uniforms;i.model=t,i.view=e,i.projection=r,i.pixelScale=n,p[0]=this.gl.drawingBufferWidth,p[1]=this.gl.drawingBufferHeight,this.shader.uniforms.resolution=p},d.update=function(t,e,r,n,o){function a(t,e,r,n){var o=f[r];o||(o=f[r]={});var a=o[e];a||(a=o[e]=i(e,{triangles:!0,font:r,textAlign:"center",textBaseline:"middle"}));for(var l=(n||12)/12,u=a.positions,c=a.cells,h=0,d=c.length;d>h;++h)for(var p=c[h],g=2;g>=0;--g){var v=u[p[g]];s.push(l*v[0],-l*v[1],t)}}for(var s=(this.gl,[]),l=[0,0,0],u=[0,0,0],c=[0,0,0],d=[0,0,0],p=0;3>p;++p){c[p]=s.length/h|0,a(.5*(t[0][p]+t[1][p]),e[p],r),d[p]=(s.length/h|0)-c[p],l[p]=s.length/h|0;for(var g=0;g<n[p].length;++g)n[p][g].text&&a(n[p][g].x,n[p][g].text,n[p][g].font||o,n[p][g].fontSize||12);u[p]=(s.length/h|0)-l[p]}this.buffer.update(s),this.tickOffset=l,this.tickCount=u,this.labelOffset=c,this.labelCount=d};var g=[0,0,0];d.drawTicks=function(t,e,r,n,i){if(this.tickCount[t]){var o=g;o[0]=o[1]=o[2]=0,o[t]=1,this.shader.uniforms.axis=o,this.shader.uniforms.color=i,this.shader.uniforms.angle=r,this.shader.uniforms.scale=e,this.shader.uniforms.offset=n,this.vao.draw(this.gl.TRIANGLES,this.tickCount[t],this.tickOffset[t])}};var v=[0,0,0];d.drawLabel=function(t,e,r,n,i){this.labelCount[t]&&(this.shader.uniforms.axis=v,this.shader.uniforms.color=i,this.shader.uniforms.angle=r,this.shader.uniforms.scale=e,this.shader.uniforms.offset=n,this.vao.draw(this.gl.TRIANGLES,this.labelCount[t],this.labelOffset[t]))},d.dispose=function(){this.shader.dispose(),this.vao.dispose(),this.buffer.dispose()}}).call(this,t("_process"))},{"./shaders":150,_process:44,"gl-buffer":105,"gl-vao":192,"vectorize-text":244}],152:[function(t,e,r){"use strict";function n(t,e){var r=t+"",n=r.indexOf("."),i=0;n>=0&&(i=r.length-n-1);var o=Math.pow(10,i),a=Math.round(t*e*o),s=a+"";if(s.indexOf("e")>=0)return s;var l=a/o,u=a%o;0>a?(l=0|-Math.ceil(l),u=0|-u):(l=0|Math.floor(l),u=0|u);var c=""+l;if(0>a&&(c="-"+c),i){for(var f=""+u;f.length<i;)f="0"+f;return c+"."+f}return c}function i(t,e){for(var r=[],i=0;3>i;++i){for(var o=[],a=(.5*(t[0][i]+t[1][i]),0);a*e[i]<=t[1][i];++a)o.push({x:a*e[i],text:n(e[i],a)});for(var 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e=z.indexOf(t);0>e||(z.splice(e,1),I.pop(),D=!0,F=!0,r())}},H.dispose=function(){if(!_&&(_=!0,window.removeEventListener("resize",e),w.removeEventListener("webglcontextlost",s),H.mouseListener.enabled=!1,!H.contextLost)){P.dispose(),N.dispose();for(var t=0;t<z.length;++t)z[t].dispose();E.dispose();for(var t=0;t<j.length;++t)j[t].dispose();L.dispose(),M=null,P=null,N=null,z=[]}};var X=!1,Y=0;H.mouseListener=g(w,function(t,e,r){if(!_){var n=j.length,i=z.length,o=T.object;T.distance=1/0,T.mouse[0]=e,T.mouse[1]=r,T.object=null,T.screen=null,T.dataCoordinate=T.dataPosition=null;var a=!1;if(t&&Y)X=!0;else{X&&(F=!0),X=!1;for(var s=0;n>s;++s){var l=j[s].query(e,G[1]-r-1,H.pickRadius);if(l){if(l.distance>T.distance)continue;for(var u=0;i>u;++u){var c=z[u];if(I[u]===s){var f=c.pick(l);f&&(T.buttons=t,T.screen=l.coord,T.distance=l.distance,T.object=c,T.index=f.distance,T.dataPosition=f.position,T.dataCoordinate=f.dataCoordinate,T.data=f,a=!0)}}}}}o&&o!==T.object&&(o.highlight&&o.highlight(null),D=!0),T.object&&(T.object.highlight&&T.object.highlight(T.data),D=!0),a=a||T.object!==o,a&&H.onselect&&H.onselect(T),1&t&&!(1&Y)&&H.onclick&&H.onclick(T),Y=t}}),w.addEventListener("webglcontextlost",s);var W=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],Z=[W[0].slice(),W[1].slice()];return x(),H.redraw=function(){_||(D=!0,b())},H}e.exports=s;var l=t("3d-view-controls"),u=t("gl-axes3d"),c=t("gl-axes3d/properties"),f=t("gl-spikes3d"),h=t("gl-select-static"),d=t("gl-fbo"),p=t("a-big-triangle"),g=t("mouse-change"),v=t("gl-mat4/perspective"),m=t("./lib/shader")},{"./lib/shader":142,"3d-view-controls":143,"a-big-triangle":145,"gl-axes3d":146,"gl-axes3d/properties":156,"gl-fbo":108,"gl-mat4/perspective":123,"gl-select-static":163,"gl-spikes3d":158,"mouse-change":207}],160:[function(t,e,r){"use strict";function n(t,e){var r=o[e];if(r||(r=o[e]={}),t in r)return r[t];for(var n=i(t,{textAlign:"center",textBaseline:"middle",lineHeight:1,font:e}),a=i(t,{triangles:!0,textAlign:"center",textBaseline:"middle",lineHeight:1,font:e}),s=[[1/0,1/0],[-(1/0),-(1/0)]],l=0;l<n.positions.length;++l)for(var u=n.positions[l],c=0;2>c;++c)s[0][c]=Math.min(s[0][c],u[c]),s[1][c]=Math.max(s[1][c],u[c]);
+-return r[t]=[a,n,s]}var i=t("vectorize-text");e.exports=n;var o={}},{"vectorize-text":244}],161:[function(t,e,r){function n(t,e){var r=i(t,e),n=r.attributes;return n.position.location=0,n.color.location=1,n.glyph.location=2,n.id.location=3,r}var i=t("gl-shader"),o="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\n\nuniform vec4 highlightId;\nuniform float highlightScale;\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   || \n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = 1.0;\n    if(distance(highlightId, id) < 0.0001) {\n      scale = highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1);\n    vec4 viewPosition = view * worldPosition;\n    viewPosition = viewPosition / viewPosition.w;\n    vec4 clipPosition = projection * (viewPosition + scale * vec4(glyph.x, -glyph.y, 0, 0));\n    \n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}",a="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float highlightScale, pixelRatio;\nuniform vec4 highlightId;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = pixelRatio;\n    if(distance(highlightId.bgr, id.bgr) < 0.001) {\n      scale *= highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1.0);\n    vec4 viewPosition = view * worldPosition;\n    vec4 clipPosition = projection * viewPosition;\n    clipPosition /= clipPosition.w;\n    \n    gl_Position = clipPosition + vec4(screenSize * scale * vec2(glyph.x, -glyph.y), 0.0, 0.0);\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}",s="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform float highlightScale;\nuniform vec4 highlightId;\nuniform vec3 axes[2];\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float scale, pixelRatio;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   ||\n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float lscale = pixelRatio * scale;\n    if(distance(highlightId, id) < 0.0001) {\n      lscale *= highlightScale;\n    }\n\n    vec4 clipCenter   = projection * view * model * vec4(position, 1);\n    vec3 dataPosition = position + 0.5*lscale*(axes[0] * glyph.x + axes[1] * glyph.y) * clipCenter.w * screenSize.y;\n    vec4 clipPosition = projection * view * model * vec4(dataPosition, 1);\n\n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = dataPosition;\n  }\n}\n",l="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float opacity;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   ||\n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = interpColor * opacity;\n  }\n}\n",u="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float pickGroup;\n\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   || \n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = vec4(pickGroup, pickId.bgr);\n  }\n}",c=[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"glyph",type:"vec2"},{name:"id",type:"vec4"}],f={vertex:o,fragment:l,attributes:c},h={vertex:a,fragment:l,attributes:c},d={vertex:s,fragment:l,attributes:c},p={vertex:o,fragment:u,attributes:c},g={vertex:a,fragment:u,attributes:c},v={vertex:s,fragment:u,attributes:c};r.createPerspective=function(t){return n(t,f)},r.createOrtho=function(t){return n(t,h)},r.createProject=function(t){return n(t,d)},r.createPickPerspective=function(t){return n(t,p)},r.createPickOrtho=function(t){return n(t,g)},r.createPickProject=function(t){return n(t,v)}},{"gl-shader":164}],162:[function(t,e,r){"use strict";function n(t,e){var r=t[0],n=t[1],i=t[2],o=t[3];return t[0]=e[0]*r+e[4]*n+e[8]*i+e[12]*o,t[1]=e[1]*r+e[5]*n+e[9]*i+e[13]*o,t[2]=e[2]*r+e[6]*n+e[10]*i+e[14]*o,t[3]=e[3]*r+e[7]*n+e[11]*i+e[15]*o,t}function i(t,e,r,i){return n(i,i,r),n(i,i,e),n(i,i,t)}function o(t,e){this.index=t,this.dataCoordinate=this.position=e}function a(t,e,r,n,i,a,s,l,u,c,f,h){this.gl=t,this.pixelRatio=1,this.shader=e,this.orthoShader=r,this.projectShader=n,this.pointBuffer=i,this.colorBuffer=a,this.glyphBuffer=s,this.idBuffer=l,this.vao=u,this.vertexCount=0,this.lineVertexCount=0,this.opacity=1,this.lineWidth=0,this.projectScale=[2/3,2/3,2/3],this.projectOpacity=[1,1,1],this.pickId=0,this.pickPerspectiveShader=c,this.pickOrthoShader=f,this.pickProjectShader=h,this.points=[],this._selectResult=new o(0,[0,0,0]),this.useOrtho=!0,this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.axesProject=[!0,!0,!0],this.axesBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.highlightId=[1,1,1,1],this.highlightScale=2,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.dirty=!0}function s(t){return t[0]=t[1]=t[2]=0,t}function l(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=1,t}function u(t,e,r,n){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[r]=n,t}function c(t){for(var e=S,r=0;2>r;++r)for(var n=0;3>n;++n)e[r][n]=Math.max(Math.min(t[r][n],1e8),-1e8);return e}function f(t,e,r,n,o){var a,f=e.axesProject,h=e.gl,d=t.uniforms,p=r.model||x,g=r.view||x,v=r.projection||x,y=e.axesBounds,b=c(e.clipBounds);a=e.axes?e.axes.lastCubeProps.axis:[1,1,1],w[0]=2/h.drawingBufferWidth,w[1]=2/h.drawingBufferHeight,t.bind(),d.view=g,d.projection=v,d.screenSize=w,d.highlightId=e.highlightId,d.highlightScale=e.highlightScale,d.clipBounds=b,d.pickGroup=e.pickId/255,d.pixelRatio=e.pixelRatio;for(var _=0;3>_;++_)if(f[_]&&e.projectOpacity[_]<1===n){d.scale=e.projectScale[_],d.opacity=e.projectOpacity[_];for(var S=E,C=0;16>C;++C)S[C]=0;for(var C=0;4>C;++C)S[5*C]=1;S[5*_]=0,a[_]<0?S[12+_]=y[0][_]:S[12+_]=y[1][_],m(S,p,S),d.model=S;var P=(_+1)%3,R=(_+2)%3,N=s(A),z=s(M);N[P]=1,z[R]=1;var I=i(v,g,p,l(k,N)),O=i(v,g,p,l(T,z));if(Math.abs(I[1])>Math.abs(O[1])){var j=I;I=O,O=j,j=N,N=z,z=j;var D=P;P=R,R=D}I[0]<0&&(N[P]=-1),O[1]>0&&(z[R]=-1);for(var F=0,B=0,C=0;4>C;++C)F+=Math.pow(p[4*P+C],2),B+=Math.pow(p[4*R+C],2);N[P]/=Math.sqrt(F),z[R]/=Math.sqrt(B),d.axes[0]=N,d.axes[1]=z,d.fragClipBounds[0]=u(L,b[0],_,-1e8),d.fragClipBounds[1]=u(L,b[1],_,1e8),e.vao.draw(h.TRIANGLES,e.vertexCount),e.lineWidth>0&&(h.lineWidth(e.lineWidth),e.vao.draw(h.LINES,e.lineVertexCount,e.vertexCount))}}function h(t,e,r,n,i,o){var a=r.gl;if(r.vao.bind(),i===r.opacity<1||o){t.bind();var s=t.uniforms;s.model=n.model||x,s.view=n.view||x,s.projection=n.projection||x,w[0]=2/a.drawingBufferWidth,w[1]=2/a.drawingBufferHeight,s.screenSize=w,s.highlightId=r.highlightId,s.highlightScale=r.highlightScale,s.fragClipBounds=R,s.clipBounds=r.axes.bounds,s.opacity=r.opacity,s.pickGroup=r.pickId/255,s.pixelRatio=r.pixelRatio,r.vao.draw(a.TRIANGLES,r.vertexCount),r.lineWidth>0&&(a.lineWidth(r.lineWidth),r.vao.draw(a.LINES,r.lineVertexCount,r.vertexCount))}f(e,r,n,i,o),r.vao.unbind()}function d(t){var e=t.gl,r=y.createPerspective(e),n=y.createOrtho(e),i=y.createProject(e),o=y.createPickPerspective(e),s=y.createPickOrtho(e),l=y.createPickProject(e),u=p(e),c=p(e),f=p(e),h=p(e),d=g(e,[{buffer:u,size:3,type:e.FLOAT},{buffer:c,size:4,type:e.FLOAT},{buffer:f,size:2,type:e.FLOAT},{buffer:h,size:4,type:e.UNSIGNED_BYTE,normalized:!0}]),v=new a(e,r,n,i,u,c,f,h,d,o,s,l);return v.update(t),v}var p=t("gl-buffer"),g=t("gl-vao"),v=t("typedarray-pool"),m=t("gl-mat4/multiply"),y=t("./lib/shaders"),b=t("./lib/glyphs"),x=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1];e.exports=d;var _=a.prototype;_.pickSlots=1,_.setPickBase=function(t){this.pickId=t},_.isTransparent=function(){if(this.opacity<1)return!0;for(var t=0;3>t;++t)if(this.axesProject[t]&&this.projectOpacity[t]<1)return!0;return!1},_.isOpaque=function(){if(this.opacity>=1)return!0;for(var t=0;3>t;++t)if(this.axesProject[t]&&this.projectOpacity[t]>=1)return!0;return!1};var w=[0,0],A=[0,0,0],M=[0,0,0],k=[0,0,0,1],T=[0,0,0,1],E=x.slice(),L=[0,0,0],S=[[0,0,0],[0,0,0]],C=[-1e8,-1e8,-1e8],P=[1e8,1e8,1e8],R=[C,P];_.draw=function(t){var e=this.useOrtho?this.orthoShader:this.shader;h(e,this.projectShader,this,t,!1,!1)},_.drawTransparent=function(t){var e=this.useOrtho?this.orthoShader:this.shader;h(e,this.projectShader,this,t,!0,!1)},_.drawPick=function(t){var e=this.useOrtho?this.pickOrthoShader:this.pickPerspectiveShader;h(e,this.pickProjectShader,this,t,!1,!0)},_.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=t.value[2]+(t.value[1]<<8)+(t.value[0]<<16);if(e>=this.pointCount||0>e)return null;var r=this.points[e],n=this._selectResult;n.index=e;for(var i=0;3>i;++i)n.position[i]=n.dataCoordinate[i]=r[i];return n},_.highlight=function(t){if(t){var e=t.index,r=255&e,n=e>>8&255,i=e>>16&255;this.highlightId=[r/255,n/255,i/255,0]}else this.highlightId=[1,1,1,1]},_.update=function(t){if(t=t||{},"perspective"in t&&(this.useOrtho=!t.perspective),"orthographic"in t&&(this.useOrtho=!!t.orthographic),"lineWidth"in t&&(this.lineWidth=t.lineWidth),"project"in t)if(Array.isArray(t.project))this.axesProject=t.project;else{var e=!!t.project;this.axesProject=[e,e,e]}if("projectScale"in t)if(Array.isArray(t.projectScale))this.projectScale=t.projectScale.slice();else{var r=+t.projectScale;this.projectScale=[r,r,r]}if("projectOpacity"in t)if(Array.isArray(t.projectOpacity))this.projectOpacity=t.projectOpacity.slice();else{var r=+t.projectOpacity;this.projectOpacity=[r,r,r]}"opacity"in t&&(this.opacity=t.opacity),this.dirty=!0;var n=t.position;if(n){var i=t.font||"normal",o=t.alignment||[0,0],a=[1/0,1/0,1/0],s=[-(1/0),-(1/0),-(1/0)],l=t.glyph,u=t.color,c=t.size,f=t.angle,h=t.lineColor,d=0,p=0,g=0,m=n.length;t:for(var y=0;m>y;++y){for(var x=n[y],_=0;3>_;++_)if(isNaN(x[_])||!isFinite(x[_]))continue t;var w;w=Array.isArray(l)?b(l[y],i):l?b(l,i):b("\u25cf",i);var A=w[0],M=w[1],k=w[2];p+=3*A.cells.length,g+=2*M.edges.length}var T=p+g,E=v.mallocFloat(3*T),L=v.mallocFloat(4*T),S=v.mallocFloat(2*T),C=v.mallocUint32(T),P=[0,o[1]],R=0,N=p,z=[0,0,0,1],I=[0,0,0,1],O=Array.isArray(u)&&Array.isArray(u[0]),j=Array.isArray(h)&&Array.isArray(h[0]);t:for(var y=0;m>y;++y){for(var x=n[y],_=0;3>_;++_){if(isNaN(x[_])||!isFinite(x[_])){d+=1;continue 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worldPosition;\n  clipPosition.z = clipPosition.z + zOffset;\n\n  gl_Position = clipPosition;\n  value = f;\n  kill = -1.0;\n  worldCoordinate = dataCoordinate;\n  planeCoordinate = uv.zw;\n\n  //Don't do lighting for contours\n  surfaceNormal   = vec3(1,0,0);\n  eyeDirection    = vec3(0,1,0);\n  lightDirection  = vec3(0,0,1);\n}\n",s="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec2 shape;\nuniform vec3 clipBounds[2];\nuniform float pickId;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 surfaceNormal;\n\nvec2 splitFloat(float v) {\n  float vh = 255.0 * v;\n  float upper = floor(vh);\n  float lower = fract(vh);\n  return vec2(upper / 255.0, floor(lower * 16.0) / 16.0);\n}\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n  vec2 ux = splitFloat(planeCoordinate.x / shape.x);\n  vec2 uy = splitFloat(planeCoordinate.y / shape.y);\n  gl_FragColor = vec4(pickId, ux.x, uy.x, ux.y + (uy.y/16.0));\n}\n";r.createShader=function(t){var e=n(t,i,o,null,[{name:"uv",type:"vec4"},{name:"f",type:"vec3"},{name:"normal",type:"vec3"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e.attributes.normal.location=2,e},r.createPickShader=function(t){var e=n(t,i,s,null,[{name:"uv",type:"vec4"},{name:"f",type:"vec3"},{name:"normal",type:"vec3"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e.attributes.normal.location=2,e},r.createContourShader=function(t){var e=n(t,a,o,null,[{name:"uv",type:"vec4"},{name:"f",type:"float"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e},r.createPickContourShader=function(t){var e=n(t,a,s,null,[{name:"uv",type:"vec4"},{name:"f",type:"float"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e}},{"gl-shader":164}],183:[function(t,e,r){arguments[4][9][0].apply(r,arguments)},{dup:9}],184:[function(t,e,r){"use strict";function n(t){if(t in l)return l[t];for(var e=[],r=0;t>r;++r)e.push("out",r,"s=0.5*(inp",r,"l-inp",r,"r);");for(var n=["array"],i=["junk"],r=0;t>r;++r){n.push("array"),i.push("out"+r+"s");var o=a(t);o[r]=-1,n.push({array:0,offset:o.slice()}),o[r]=1,n.push({array:0,offset:o.slice()}),i.push("inp"+r+"l","inp"+r+"r")}return l[t]=s({args:n,pre:c,post:c,body:{body:e.join(""),args:i.map(function(t){return{name:t,lvalue:0===t.indexOf("out"),rvalue:0===t.indexOf("inp"),count:"junk"!==t|0}}),thisVars:[],localVars:[]},funcName:"fdTemplate"+t})}function i(t){function e(e){for(var r=o-e.length,n=[],i=[],s=[],l=0;o>l;++l)e.indexOf(l+1)>=0?s.push("0"):e.indexOf(-(l+1))>=0?s.push("s["+l+"]-1"):(s.push("-1"),n.push("1"),i.push("s["+l+"]-2"));var u=".lo("+n.join()+").hi("+i.join()+")";if(0===n.length&&(u=""),r>0){a.push("if(1");for(var l=0;o>l;++l)e.indexOf(l+1)>=0||e.indexOf(-(l+1))>=0||a.push("&&s[",l,"]>2");a.push("){grad",r,"(src.pick(",s.join(),")",u);for(var l=0;o>l;++l)e.indexOf(l+1)>=0||e.indexOf(-(l+1))>=0||a.push(",dst.pick(",s.join(),",",l,")",u);a.push(");")}for(var l=0;l<e.length;++l){var c=Math.abs(e[l])-1,f="dst.pick("+s.join()+","+c+")"+u;switch(t[c]){case"clamp":var h=s.slice(),d=s.slice();e[l]<0?h[c]="s["+c+"]-2":d[c]="1",0===r?a.push("if(s[",c,"]>1){dst.set(",s.join(),",",c,",0.5*(src.get(",h.join(),")-src.get(",d.join(),")))}else{dst.set(",s.join(),",",c,",0)};"):a.push("if(s[",c,"]>1){diff(",f,",src.pick(",h.join(),")",u,",src.pick(",d.join(),")",u,");}else{zero(",f,");};");break;case"mirror":0===r?a.push("dst.set(",s.join(),",",c,",0);"):a.push("zero(",f,");");break;case"wrap":var 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Error("ndarray-gradient: invalid boundary conditions")}else r="string"==typeof r?a(e.dimension,r):a(e.dimension,"clamp");if(t.dimension!==e.dimension+1)throw new Error("ndarray-gradient: output dimension must be +1 input dimension");if(t.shape[e.dimension]!==e.dimension)throw new Error("ndarray-gradient: output shape must match input shape");for(var n=0;n<e.dimension;++n)if(t.shape[n]!==e.shape[n])throw new Error("ndarray-gradient: shape mismatch");if(0===e.size)return t;if(e.dimension<=0)return t.set(0),t;var o=i(r);return o(t,e)}e.exports=o;var a=t("dup"),s=t("cwise-compiler"),l={},u={},c={body:"",args:[],thisVars:[],localVars:[]},f=s({args:["array","array","array"],pre:c,post:c,body:{args:[{name:"out",lvalue:!0,rvalue:!1,count:1},{name:"left",lvalue:!1,rvalue:!0,count:1},{name:"right",lvalue:!1,rvalue:!0,count:1}],body:"out=0.5*(left-right)",thisVars:[],localVars:[]},funcName:"cdiff"}),h=s({args:["array"],pre:c,post:c,body:{args:[{name:"out",lvalue:!0,rvalue:!1,count:1}],body:"out=0",thisVars:[],localVars:[]},funcName:"zero"})},{"cwise-compiler":96,dup:102}],185:[function(t,e,r){"use strict";var n=t("ndarray"),i=t("./doConvert.js");e.exports=function(t,e){for(var r=[],o=t,a=1;o instanceof Array;)r.push(o.length),a*=o.length,o=o[0];return 0===r.length?n():(e||(e=n(new Float64Array(a),r)),i(e,t),e)}},{"./doConvert.js":186,ndarray:219}],186:[function(t,e,r){e.exports=t("cwise-compiler")({args:["array","scalar","index"],pre:{body:"{}",args:[],thisVars:[],localVars:[]},body:{body:"{\nvar _inline_1_v=_inline_1_arg1_,_inline_1_i\nfor(_inline_1_i=0;_inline_1_i<_inline_1_arg2_.length-1;++_inline_1_i) {\n_inline_1_v=_inline_1_v[_inline_1_arg2_[_inline_1_i]]\n}\n_inline_1_arg0_=_inline_1_v[_inline_1_arg2_[_inline_1_arg2_.length-1]]\n}",args:[{name:"_inline_1_arg0_",lvalue:!0,rvalue:!1,count:1},{name:"_inline_1_arg1_",lvalue:!1,rvalue:!0,count:1},{name:"_inline_1_arg2_",lvalue:!1,rvalue:!0,count:4}],thisVars:[],localVars:["_inline_1_i","_inline_1_v"]},post:{body:"{}",args:[],thisVars:[],localVars:[]},funcName:"convert",blockSize:64})},{"cwise-compiler":96}],187:[function(t,e,r){"use strict";function n(t,e,r,n,i){this.position=t,this.index=e,this.uv=r,this.level=n,this.dataCoordinate=i}function i(t){var e=x([y({colormap:t,nshades:O,format:"rgba"}).map(function(t){return[t[0],t[1],t[2],255*t[3]]})]);return b.divseq(e,255),e}function o(t,e,r,i,o,a,s,l,u,c,f,h,d,p){this.gl=t,this.shape=e,this.bounds=r,this.intensityBounds=[],this._shader=i,this._pickShader=o,this._coordinateBuffer=a,this._vao=s,this._colorMap=l,this._contourShader=u,this._contourPickShader=c,this._contourBuffer=f,this._contourVAO=h,this._contourOffsets=[[],[],[]],this._contourCounts=[[],[],[]],this._vertexCount=0,this._pickResult=new n([0,0,0],[0,0],[0,0],[0,0,0],[0,0,0]),this._dynamicBuffer=d,this._dynamicVAO=p,this._dynamicOffsets=[0,0,0],this._dynamicCounts=[0,0,0],this.contourWidth=[1,1,1],this.contourLevels=[[1],[1],[1]],this.contourTint=[0,0,0],this.contourColor=[[.5,.5,.5,1],[.5,.5,.5,1],[.5,.5,.5,1]],this.showContour=!0,this.showSurface=!0,this.enableHighlight=[!0,!0,!0],this.highlightColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.highlightTint=[1,1,1],this.highlightLevel=[-1,-1,-1],this.enableDynamic=[!0,!0,!0],this.dynamicLevel=[NaN,NaN,NaN],this.dynamicColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.dynamicTint=[1,1,1],this.dynamicWidth=[1,1,1],this.axesBounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.surfaceProject=[!1,!1,!1],this.contourProject=[[!1,!1,!1],[!1,!1,!1],[!1,!1,!1]],this.colorBounds=[!1,!1],this._field=[_(m.mallocFloat(1024),[0,0]),_(m.mallocFloat(1024),[0,0]),_(m.mallocFloat(1024),[0,0])],this.pickId=1,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.snapToData=!1,this.opacity=1,this.lightPosition=[10,1e4,0],this.ambientLight=.8,this.diffuseLight=.8,this.specularLight=2,this.roughness=.5,this.fresnel=1.5,this.dirty=!0}function a(t,e){var r,n,i,o=e.axes&&e.axes.lastCubeProps.axis||D,a=e.showSurface,s=e.showContour;for(r=0;3>r;++r)for(a=a||e.surfaceProject[r],n=0;3>n;++n)s=s||e.contourProject[r][n];for(r=0;3>r;++r){var l=F.projections[r];for(n=0;16>n;++n)l[n]=0;for(n=0;4>n;++n)l[5*n]=1;l[5*r]=0,l[12+r]=e.axesBounds[+(o[r]>0)][r],A(l,t.model,l);var u=F.clipBounds[r];for(i=0;2>i;++i)for(n=0;3>n;++n)u[i][n]=t.clipBounds[i][n];u[0][r]=-1e8,u[1][r]=1e8}return F.showSurface=a,F.showContour=s,F}function s(t,e){t=t||{};var r=this.gl;r.disable(r.CULL_FACE),this._colorMap.bind(0);var n=B;n.model=t.model||N,n.view=t.view||N,n.projection=t.projection||N,n.lowerBound=[this.bounds[0][0],this.bounds[0][1],this.colorBounds[0]||this.bounds[0][2]],n.upperBound=[this.bounds[1][0],this.bounds[1][1],this.colorBounds[1]||this.bounds[1][2]],n.contourColor=this.contourColor[0],n.inverseModel=M(n.inverseModel,n.model);for(var i=0;2>i;++i)for(var o=n.clipBounds[i],s=0;3>s;++s)o[s]=Math.min(Math.max(this.clipBounds[i][s],-1e8),1e8);n.kambient=this.ambientLight,n.kdiffuse=this.diffuseLight,n.kspecular=this.specularLight,n.roughness=this.roughness,n.fresnel=this.fresnel,n.opacity=this.opacity,n.height=0,n.permutation=V;var l=U;for(A(l,n.view,n.model),A(l,n.projection,l),M(l,l),i=0;3>i;++i)n.eyePosition[i]=l[12+i]/l[15];var u=l[15];for(i=0;3>i;++i)u+=this.lightPosition[i]*l[4*i+3];for(i=0;3>i;++i){var c=l[12+i];for(s=0;3>s;++s)c+=l[4*s+i]*this.lightPosition[s];n.lightPosition[i]=c/u}var f=a(n,this);if(f.showSurface&&e===this.opacity<1){for(this._shader.bind(),this._shader.uniforms=n,this._vao.bind(),this.showSurface&&this._vertexCount&&this._vao.draw(r.TRIANGLES,this._vertexCount),i=0;3>i;++i)this.surfaceProject[i]&&this.vertexCount&&(this._shader.uniforms.model=f.projections[i],this._shader.uniforms.clipBounds=f.clipBounds[i],this._vao.draw(r.TRIANGLES,this._vertexCount));this._vao.unbind()}if(f.showContour&&!e){var h=this._contourShader;n.kambient=1,n.kdiffuse=0,n.kspecular=0,n.opacity=1,h.bind(),h.uniforms=n;var d=this._contourVAO;for(d.bind(),i=0;3>i;++i)for(h.uniforms.permutation=I[i],r.lineWidth(this.contourWidth[i]),s=0;s<this.contourLevels[i].length;++s)this._contourCounts[i][s]&&(s===this.highlightLevel[i]?(h.uniforms.contourColor=this.highlightColor[i],h.uniforms.contourTint=this.highlightTint[i]):0!==s&&s-1!==this.highlightLevel[i]||(h.uniforms.contourColor=this.contourColor[i],h.uniforms.contourTint=this.contourTint[i]),h.uniforms.height=this.contourLevels[i][s],d.draw(r.LINES,this._contourCounts[i][s],this._contourOffsets[i][s]));for(i=0;3>i;++i)for(h.uniforms.model=f.projections[i],h.uniforms.clipBounds=f.clipBounds[i],s=0;3>s;++s)if(this.contourProject[i][s]){h.uniforms.permutation=I[s],r.lineWidth(this.contourWidth[s]);for(var p=0;p<this.contourLevels[s].length;++p)p===this.highlightLevel[s]?(h.uniforms.contourColor=this.highlightColor[s],h.uniforms.contourTint=this.highlightTint[s]):0!==p&&p-1!==this.highlightLevel[s]||(h.uniforms.contourColor=this.contourColor[s],h.uniforms.contourTint=this.contourTint[s]),h.uniforms.height=this.contourLevels[s][p],d.draw(r.LINES,this._contourCounts[s][p],this._contourOffsets[s][p])}for(d=this._dynamicVAO,d.bind(),i=0;3>i;++i)if(0!==this._dynamicCounts[i])for(h.uniforms.model=n.model,h.uniforms.clipBounds=n.clipBounds,h.uniforms.permutation=I[i],r.lineWidth(this.dynamicWidth[i]),h.uniforms.contourColor=this.dynamicColor[i],h.uniforms.contourTint=this.dynamicTint[i],h.uniforms.height=this.dynamicLevel[i],d.draw(r.LINES,this._dynamicCounts[i],this._dynamicOffsets[i]),s=0;3>s;++s)this.contourProject[s][i]&&(h.uniforms.model=f.projections[s],h.uniforms.clipBounds=f.clipBounds[s],d.draw(r.LINES,this._dynamicCounts[i],this._dynamicOffsets[i]));d.unbind()}}function l(t,e){var r=e.shape.slice(),n=t.shape.slice();b.assign(t.lo(1,1).hi(r[0],r[1]),e),b.assign(t.lo(1).hi(r[0],1),e.hi(r[0],1)),b.assign(t.lo(1,n[1]-1).hi(r[0],1),e.lo(0,r[1]-1).hi(r[0],1)),b.assign(t.lo(0,1).hi(1,r[1]),e.hi(1)),b.assign(t.lo(n[0]-1,1).hi(1,r[1]),e.lo(r[0]-1)),t.set(0,0,e.get(0,0)),t.set(0,n[1]-1,e.get(0,r[1]-1)),t.set(n[0]-1,0,e.get(r[0]-1,0)),t.set(n[0]-1,n[1]-1,e.get(r[0]-1,r[1]-1))}function u(t,e){return Array.isArray(t)?[e(t[0]),e(t[1]),e(t[2])]:[e(t),e(t),e(t)]}function c(t){return Array.isArray(t)?3===t.length?[t[0],t[1],t[2],1]:[t[0],t[1],t[2],t[3]]:[0,0,0,1]}function f(t){if(Array.isArray(t)){if(Array.isArray(t))return[c(t[0]),c(t[1]),c(t[2])];var e=c(t);return[e.slice(),e.slice(),e.slice()]}}function h(t){var e=t.gl,r=L(e),n=C(e),i=S(e),a=P(e),s=p(e),l=g(e,[{buffer:s,size:4,stride:R,offset:0},{buffer:s,size:3,stride:R,offset:16},{buffer:s,size:3,stride:R,offset:28}]),u=p(e),c=g(e,[{buffer:u,size:4,stride:20,offset:0},{buffer:u,size:1,stride:20,offset:16}]),f=p(e),h=g(e,[{buffer:f,size:2,type:e.FLOAT}]),d=v(e,1,O,e.RGBA,e.UNSIGNED_BYTE);d.minFilter=e.LINEAR,d.magFilter=e.LINEAR;var m=new o(e,[0,0],[[0,0,0],[0,0,0]],r,n,s,l,d,i,a,u,c,f,h),y={levels:[[],[],[]]};for(var b in t)y[b]=t[b];return y.colormap=y.colormap||"jet",m.update(y),m}e.exports=h;var d=t("bit-twiddle"),p=t("gl-buffer"),g=t("gl-vao"),v=t("gl-texture2d"),m=t("typedarray-pool"),y=t("colormap"),b=t("ndarray-ops"),x=t("ndarray-pack"),_=t("ndarray"),w=t("surface-nets"),A=t("gl-mat4/multiply"),M=t("gl-mat4/invert"),k=t("binary-search-bounds"),T=t("ndarray-gradient"),E=t("./lib/shaders"),L=E.createShader,S=E.createContourShader,C=E.createPickShader,P=E.createPickContourShader,R=40,N=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],z=[[0,0],[0,1],[1,0],[1,1],[1,0],[0,1]],I=[[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0]];!function(){for(var t=0;3>t;++t){var e=I[t],r=(t+1)%3,n=(t+2)%3;e[r+0]=1,e[n+3]=1,e[t+6]=1}}();var O=265,j=o.prototype;j.isTransparent=function(){return this.opacity<1},j.isOpaque=function(){if(this.opacity>=1)return!0;for(var t=0;3>t;++t)if(this._contourCounts[t].length>0||this._dynamicCounts[t]>0)return!0;return!1},j.pickSlots=1,j.setPickBase=function(t){this.pickId=t};var D=[0,0,0],F={showSurface:!1,showContour:!1,projections:[N.slice(),N.slice(),N.slice()],clipBounds:[[[0,0,0],[0,0,0]],[[0,0,0],[0,0,0]],[[0,0,0],[0,0,0]]]},B={model:N,view:N,projection:N,inverseModel:N.slice(),lowerBound:[0,0,0],upperBound:[0,0,0],colorMap:0,clipBounds:[[0,0,0],[0,0,0]],height:0,contourTint:0,contourColor:[0,0,0,1],permutation:[1,0,0,0,1,0,0,0,1],zOffset:-1e-4,kambient:1,kdiffuse:1,kspecular:1,lightPosition:[1e3,1e3,1e3],eyePosition:[0,0,0],roughness:1,fresnel:1,opacity:1},U=N.slice(),V=[1,0,0,0,1,0,0,0,1];j.draw=function(t){return s.call(this,t,!1)},j.drawTransparent=function(t){return s.call(this,t,!0)};var q={model:N,view:N,projection:N,inverseModel:N,clipBounds:[[0,0,0],[0,0,0]],height:0,shape:[0,0],pickId:0,lowerBound:[0,0,0],upperBound:[0,0,0],zOffset:0,permutation:[1,0,0,0,1,0,0,0,1],lightPosition:[0,0,0],eyePosition:[0,0,0]};j.drawPick=function(t){t=t||{};var e=this.gl;e.disable(e.CULL_FACE);var r=q;r.model=t.model||N,r.view=t.view||N,r.projection=t.projection||N,r.shape=this._field[2].shape,r.pickId=this.pickId/255,r.lowerBound=this.bounds[0],r.upperBound=this.bounds[1],r.permutation=V;for(var n=0;2>n;++n)for(var i=r.clipBounds[n],o=0;3>o;++o)i[o]=Math.min(Math.max(this.clipBounds[n][o],-1e8),1e8);var s=a(r,this);if(s.showSurface){for(this._pickShader.bind(),this._pickShader.uniforms=r,this._vao.bind(),this._vao.draw(e.TRIANGLES,this._vertexCount),n=0;3>n;++n)this.surfaceProject[n]&&(this._pickShader.uniforms.model=s.projections[n],this._pickShader.uniforms.clipBounds=s.clipBounds[n],this._vao.draw(e.TRIANGLES,this._vertexCount));this._vao.unbind()}if(s.showContour){var l=this._contourPickShader;l.bind(),l.uniforms=r;var u=this._contourVAO;for(u.bind(),o=0;3>o;++o)for(e.lineWidth(this.contourWidth[o]),l.uniforms.permutation=I[o],n=0;n<this.contourLevels[o].length;++n)this._contourCounts[o][n]&&(l.uniforms.height=this.contourLevels[o][n],u.draw(e.LINES,this._contourCounts[o][n],this._contourOffsets[o][n]));for(n=0;3>n;++n)for(l.uniforms.model=s.projections[n],l.uniforms.clipBounds=s.clipBounds[n],o=0;3>o;++o)if(this.contourProject[n][o]){l.uniforms.permutation=I[o],e.lineWidth(this.contourWidth[o]);for(var c=0;c<this.contourLevels[o].length;++c)this._contourCounts[o][c]&&(l.uniforms.height=this.contourLevels[o][c],u.draw(e.LINES,this._contourCounts[o][c],this._contourOffsets[o][c]))}u.unbind()}},j.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=this._field[2].shape,r=this._pickResult,n=e[0]*(t.value[0]+(t.value[2]>>4)/16)/255,i=Math.floor(n),o=n-i,a=e[1]*(t.value[1]+(15&t.value[2])/16)/255,s=Math.floor(a),l=a-s;i+=1,s+=1;var u=r.position;u[0]=u[1]=u[2]=0;for(var c=0;2>c;++c)for(var f=c?o:1-o,h=0;2>h;++h)for(var d=h?l:1-l,p=i+c,g=s+h,v=f*d,m=0;3>m;++m)u[m]+=this._field[m].get(p,g)*v;for(var y=this._pickResult.level,b=0;3>b;++b)if(y[b]=k.le(this.contourLevels[b],u[b]),y[b]<0)this.contourLevels[b].length>0&&(y[b]=0);else if(y[b]<this.contourLevels[b].length-1){var x=this.contourLevels[b][y[b]],_=this.contourLevels[b][y[b]+1];Math.abs(x-u[b])>Math.abs(_-u[b])&&(y[b]+=1)}for(r.index[0]=.5>o?i:i+1,r.index[1]=.5>l?s:s+1,r.uv[0]=n/e[0],r.uv[1]=a/e[1],m=0;3>m;++m)r.dataCoordinate[m]=this._field[m].get(r.index[0],r.index[1]);return r},j.update=function(t){t=t||{},this.dirty=!0,"contourWidth"in t&&(this.contourWidth=u(t.contourWidth,Number)),"showContour"in t&&(this.showContour=u(t.showContour,Boolean)),"showSurface"in t&&(this.showSurface=!!t.showSurface),"contourTint"in t&&(this.contourTint=u(t.contourTint,Boolean)),"contourColor"in t&&(this.contourColor=f(t.contourColor)),"contourProject"in t&&(this.contourProject=u(t.contourProject,function(t){return u(t,Boolean)})),"surfaceProject"in t&&(this.surfaceProject=t.surfaceProject),"dynamicColor"in t&&(this.dynamicColor=f(t.dynamicColor)),"dynamicTint"in t&&(this.dynamicTint=u(t.dynamicTint,Number)),"dynamicWidth"in t&&(this.dynamicWidth=u(t.dynamicWidth,Number)),"opacity"in t&&(this.opacity=t.opacity),"colorBounds"in t&&(this.colorBounds=t.colorBounds);var e=t.field||t.coords&&t.coords[2]||null,r=!1;if(e||(e=this._field[2].shape[0]||this._field[2].shape[2]?this._field[2].lo(1,1).hi(this._field[2].shape[0]-2,this._field[2].shape[1]-2):this._field[2].hi(0,0)),"field"in t||"coords"in t){var n=(e.shape[0]+2)*(e.shape[1]+2);n>this._field[2].data.length&&(m.freeFloat(this._field[2].data),this._field[2].data=m.mallocFloat(d.nextPow2(n))),this._field[2]=_(this._field[2].data,[e.shape[0]+2,e.shape[1]+2]),l(this._field[2],e),this.shape=e.shape.slice();for(var o=this.shape,a=0;2>a;++a)this._field[2].size>this._field[a].data.length&&(m.freeFloat(this._field[a].data),this._field[a].data=m.mallocFloat(this._field[2].size)),this._field[a]=_(this._field[a].data,[o[0]+2,o[1]+2]);if(t.coords){var s=t.coords;if(!Array.isArray(s)||3!==s.length)throw new Error("gl-surface: invalid coordinates for x/y");for(a=0;2>a;++a){var c=s[a];for(y=0;2>y;++y)if(c.shape[y]!==o[y])throw new Error("gl-surface: coords have incorrect shape");l(this._field[a],c)}}else if(t.ticks){var h=t.ticks;if(!Array.isArray(h)||2!==h.length)throw new Error("gl-surface: invalid ticks");for(a=0;2>a;++a){var p=h[a];if((Array.isArray(p)||p.length)&&(p=_(p)),p.shape[0]!==o[a])throw new Error("gl-surface: invalid tick length");var g=_(p.data,o);g.stride[a]=p.stride[0],g.stride[1^a]=0,l(this._field[a],g)}}else{for(a=0;2>a;++a){var v=[0,0];v[a]=1,this._field[a]=_(this._field[a].data,[o[0]+2,o[1]+2],v,0)}this._field[0].set(0,0,0);for(var y=0;y<o[0];++y)this._field[0].set(y+1,0,y);for(this._field[0].set(o[0]+1,0,o[0]-1),this._field[1].set(0,0,0),y=0;y<o[1];++y)this._field[1].set(0,y+1,y);this._field[1].set(0,o[1]+1,o[1]-1)}var b=this._field,x=_(m.mallocFloat(3*b[2].size*2),[3,o[0]+2,o[1]+2,2]);for(a=0;3>a;++a)T(x.pick(a),b[a],"mirror");var A=_(m.mallocFloat(3*b[2].size),[o[0]+2,o[1]+2,3]);for(a=0;a<o[0]+2;++a)for(y=0;y<o[1]+2;++y){var M=x.get(0,a,y,0),k=x.get(0,a,y,1),E=x.get(1,a,y,0),L=x.get(1,a,y,1),S=x.get(2,a,y,0),C=x.get(2,a,y,1),P=E*C-L*S,R=S*k-C*M,N=M*L-k*E,I=Math.sqrt(P*P+R*R+N*N);1e-8>I?(I=Math.max(Math.abs(P),Math.abs(R),Math.abs(N)),1e-8>I?(N=1,R=P=0,I=1):I=1/I):I=1/Math.sqrt(I),A.set(a,y,0,P*I),
+-A.set(a,y,1,R*I),A.set(a,y,2,N*I)}m.free(x.data);var O=[1/0,1/0,1/0],j=[-(1/0),-(1/0),-(1/0)],D=1/0,F=-(1/0),B=(o[0]-1)*(o[1]-1)*6,U=m.mallocFloat(d.nextPow2(10*B)),V=0,q=0;for(a=0;a<o[0]-1;++a)t:for(y=0;y<o[1]-1;++y){for(var H=0;2>H;++H)for(var G=0;2>G;++G)for(var X=0;3>X;++X){var Y=this._field[X].get(1+a+H,1+y+G);if(isNaN(Y)||!isFinite(Y))continue t}for(X=0;6>X;++X){var W=a+z[X][0],Z=y+z[X][1],Q=this._field[0].get(W+1,Z+1),$=this._field[1].get(W+1,Z+1);Y=this._field[2].get(W+1,Z+1);var K=Y;P=A.get(W+1,Z+1,0),R=A.get(W+1,Z+1,1),N=A.get(W+1,Z+1,2),t.intensity&&(K=t.intensity.get(W,Z)),U[V++]=W,U[V++]=Z,U[V++]=Q,U[V++]=$,U[V++]=Y,U[V++]=0,U[V++]=K,U[V++]=P,U[V++]=R,U[V++]=N,O[0]=Math.min(O[0],Q),O[1]=Math.min(O[1],$),O[2]=Math.min(O[2],Y),D=Math.min(D,K),j[0]=Math.max(j[0],Q),j[1]=Math.max(j[1],$),j[2]=Math.max(j[2],Y),F=Math.max(F,K),q+=1}}for(t.intensityBounds&&(D=+t.intensityBounds[0],F=+t.intensityBounds[1]),a=6;V>a;a+=10)U[a]=(U[a]-D)/(F-D);this._vertexCount=q,this._coordinateBuffer.update(U.subarray(0,V)),m.freeFloat(U),m.free(A.data),this.bounds=[O,j],this.intensity=t.intensity||this._field[2],this.intensityBounds[0]===D&&this.intensityBounds[1]===F||(r=!0),this.intensityBounds=[D,F]}if("levels"in t){var J=t.levels;for(J=Array.isArray(J[0])?J.slice():[[],[],J],a=0;3>a;++a)J[a]=J[a].slice(),J.sort(function(t,e){return t-e});t:for(a=0;3>a;++a){if(J[a].length!==this.contourLevels[a].length){r=!0;break}for(y=0;y<J[a].length;++y)if(J[a][y]!==this.contourLevels[a][y]){r=!0;break t}}this.contourLevels=J}if(r){b=this._field,o=this.shape;for(var tt=[],et=0;3>et;++et){J=this.contourLevels[et];var rt=[],nt=[],it=[0,0,0];for(a=0;a<J.length;++a){var ot=w(this._field[et],J[a]);rt.push(tt.length/5|0),q=0;t:for(y=0;y<ot.cells.length;++y){var at=ot.cells[y];for(X=0;2>X;++X){var st=ot.positions[at[X]],lt=st[0],ut=0|Math.floor(lt),ct=lt-ut,ft=st[1],ht=0|Math.floor(ft),dt=ft-ht,pt=!1;e:for(var gt=0;3>gt;++gt){it[gt]=0;var vt=(et+gt+1)%3;for(H=0;2>H;++H){var mt=H?ct:1-ct;for(W=0|Math.min(Math.max(ut+H,0),o[0]),G=0;2>G;++G){var yt=G?dt:1-dt;if(Z=0|Math.min(Math.max(ht+G,0),o[1]),Y=2>gt?this._field[vt].get(W,Z):(this.intensity.get(W,Z)-this.intensityBounds[0])/(this.intensityBounds[1]-this.intensityBounds[0]),!isFinite(Y)||isNaN(Y)){pt=!0;break e}var bt=mt*yt;it[gt]+=bt*Y}}}if(pt){if(X>0){for(var xt=0;5>xt;++xt)tt.pop();q-=1}continue t}tt.push(it[0],it[1],st[0],st[1],it[2]),q+=1}}nt.push(q)}this._contourOffsets[et]=rt,this._contourCounts[et]=nt}var _t=m.mallocFloat(tt.length);for(a=0;a<tt.length;++a)_t[a]=tt[a];this._contourBuffer.update(_t),m.freeFloat(_t)}t.colormap&&this._colorMap.setPixels(i(t.colormap))},j.dispose=function(){this._shader.dispose(),this._vao.dispose(),this._coordinateBuffer.dispose(),this._colorMap.dispose(),this._contourBuffer.dispose(),this._contourVAO.dispose(),this._contourShader.dispose(),this._contourPickShader.dispose(),this._dynamicBuffer.dispose(),this._dynamicVAO.dispose();for(var t=0;3>t;++t)m.freeFloat(this._field[t].data)},j.highlight=function(t){if(!t)return this._dynamicCounts=[0,0,0],this.dyanamicLevel=[NaN,NaN,NaN],void(this.highlightLevel=[-1,-1,-1]);for(var e=0;3>e;++e)this.enableHighlight[e]?this.highlightLevel[e]=t.level[e]:this.highlightLevel[e]=-1;var r;if(r=this.snapToData?t.dataCoordinate:t.position,this.enableDynamic[0]&&r[0]!==this.dynamicLevel[0]||this.enableDynamic[1]&&r[1]!==this.dynamicLevel[1]||this.enableDynamic[2]&&r[2]!==this.dynamicLevel[2]){for(var n=0,i=this.shape,o=m.mallocFloat(12*i[0]*i[1]),a=0;3>a;++a)if(this.enableDynamic[a]){this.dynamicLevel[a]=r[a];var s=(a+1)%3,l=(a+2)%3,u=this._field[a],c=this._field[s],f=this._field[l],h=(this.intensity,w(u,r[a])),d=h.cells,p=h.positions;for(this._dynamicOffsets[a]=n,e=0;e<d.length;++e)for(var g=d[e],v=0;2>v;++v){var y=p[g[v]],b=+y[0],x=0|b,_=0|Math.min(x+1,i[0]),A=b-x,M=1-A,k=+y[1],T=0|k,E=0|Math.min(T+1,i[1]),L=k-T,S=1-L,C=M*S,P=M*L,R=A*S,N=A*L,z=C*c.get(x,T)+P*c.get(x,E)+R*c.get(_,T)+N*c.get(_,E),I=C*f.get(x,T)+P*f.get(x,E)+R*f.get(_,T)+N*f.get(_,E);if(isNaN(z)||isNaN(I)){v&&(n-=1);break}o[2*n+0]=z,o[2*n+1]=I,n+=1}this._dynamicCounts[a]=n-this._dynamicOffsets[a]}else this.dynamicLevel[a]=NaN,this._dynamicCounts[a]=0;this._dynamicBuffer.update(o.subarray(0,2*n)),m.freeFloat(o)}}},{"./lib/shaders":182,"binary-search-bounds":183,"bit-twiddle":38,colormap:88,"gl-buffer":105,"gl-mat4/invert":120,"gl-mat4/multiply":122,"gl-texture2d":188,"gl-vao":192,ndarray:219,"ndarray-gradient":184,"ndarray-ops":218,"ndarray-pack":185,"surface-nets":238,"typedarray-pool":242}],188:[function(t,e,r){"use strict";function n(t){v=[t.LINEAR,t.NEAREST_MIPMAP_LINEAR,t.LINEAR_MIPMAP_NEAREST,t.LINEAR_MIPMAP_NEAREST],m=[t.NEAREST,t.LINEAR,t.NEAREST_MIPMAP_NEAREST,t.NEAREST_MIPMAP_LINEAR,t.LINEAR_MIPMAP_NEAREST,t.LINEAR_MIPMAP_LINEAR],y=[t.REPEAT,t.CLAMP_TO_EDGE,t.MIRRORED_REPEAT]}function i(t,e,r){var n=t.gl,i=n.getParameter(n.MAX_TEXTURE_SIZE);if(0>e||e>i||0>r||r>i)throw new Error("gl-texture2d: Invalid texture size");return t._shape=[e,r],t.bind(),n.texImage2D(n.TEXTURE_2D,0,t.format,e,r,0,t.format,t.type,null),t._mipLevels=[0],t}function o(t,e,r,n,i,o){this.gl=t,this.handle=e,this.format=i,this.type=o,this._shape=[r,n],this._mipLevels=[0],this._magFilter=t.NEAREST,this._minFilter=t.NEAREST,this._wrapS=t.CLAMP_TO_EDGE,this._wrapT=t.CLAMP_TO_EDGE,this._anisoSamples=1;var a=this,s=[this._wrapS,this._wrapT];Object.defineProperties(s,[{get:function(){return a._wrapS},set:function(t){return a.wrapS=t}},{get:function(){return a._wrapT},set:function(t){return a.wrapT=t}}]),this._wrapVector=s;var l=[this._shape[0],this._shape[1]];Object.defineProperties(l,[{get:function(){return a._shape[0]},set:function(t){return a.width=t}},{get:function(){return a._shape[1]},set:function(t){return a.height=t}}]),this._shapeVector=l}function a(t,e){return 3===t.length?1===e[2]&&e[1]===t[0]*t[2]&&e[0]===t[2]:1===e[0]&&e[1]===t[0]}function s(t,e,r,n,i,o,s,l){var u=l.dtype,c=l.shape.slice();if(c.length<2||c.length>3)throw new Error("gl-texture2d: Invalid ndarray, must be 2d or 3d");var f=0,h=0,v=a(c,l.stride.slice());"float32"===u?f=t.FLOAT:"float64"===u?(f=t.FLOAT,v=!1,u="float32"):"uint8"===u?f=t.UNSIGNED_BYTE:(f=t.UNSIGNED_BYTE,v=!1,u="uint8");var m=1;if(2===c.length)h=t.LUMINANCE,c=[c[0],c[1],1],l=d(l.data,c,[l.stride[0],l.stride[1],1],l.offset);else{if(3!==c.length)throw new Error("gl-texture2d: Invalid shape for texture");if(1===c[2])h=t.ALPHA;else if(2===c[2])h=t.LUMINANCE_ALPHA;else if(3===c[2])h=t.RGB;else{if(4!==c[2])throw new Error("gl-texture2d: Invalid shape for pixel coords");h=t.RGBA}m=c[2]}if(h!==t.LUMINANCE&&h!==t.ALPHA||i!==t.LUMINANCE&&i!==t.ALPHA||(h=i),h!==i)throw new Error("gl-texture2d: Incompatible texture format for setPixels");var y=l.size,x=s.indexOf(n)<0;if(x&&s.push(n),f===o&&v)0===l.offset&&l.data.length===y?x?t.texImage2D(t.TEXTURE_2D,n,i,c[0],c[1],0,i,o,l.data):t.texSubImage2D(t.TEXTURE_2D,n,e,r,c[0],c[1],i,o,l.data):x?t.texImage2D(t.TEXTURE_2D,n,i,c[0],c[1],0,i,o,l.data.subarray(l.offset,l.offset+y)):t.texSubImage2D(t.TEXTURE_2D,n,e,r,c[0],c[1],i,o,l.data.subarray(l.offset,l.offset+y));else{var _;_=o===t.FLOAT?g.mallocFloat32(y):g.mallocUint8(y);var w=d(_,c,[c[2],c[2]*c[0],1]);f===t.FLOAT&&o===t.UNSIGNED_BYTE?b(w,l):p.assign(w,l),x?t.texImage2D(t.TEXTURE_2D,n,i,c[0],c[1],0,i,o,_.subarray(0,y)):t.texSubImage2D(t.TEXTURE_2D,n,e,r,c[0],c[1],i,o,_.subarray(0,y)),o===t.FLOAT?g.freeFloat32(_):g.freeUint8(_)}}function l(t){var e=t.createTexture();return t.bindTexture(t.TEXTURE_2D,e),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.NEAREST),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.NEAREST),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),e}function u(t,e,r,n,i){var a=t.getParameter(t.MAX_TEXTURE_SIZE);if(0>e||e>a||0>r||r>a)throw new Error("gl-texture2d: Invalid texture shape");if(i===t.FLOAT&&!t.getExtension("OES_texture_float"))throw new Error("gl-texture2d: Floating point textures not supported on this platform");var s=l(t);return t.texImage2D(t.TEXTURE_2D,0,n,e,r,0,n,i,null),new o(t,s,e,r,n,i)}function c(t,e,r,n){var i=l(t);return t.texImage2D(t.TEXTURE_2D,0,r,r,n,e),new o(t,i,0|e.width,0|e.height,r,n)}function f(t,e){var r=e.dtype,n=e.shape.slice(),i=t.getParameter(t.MAX_TEXTURE_SIZE);if(n[0]<0||n[0]>i||n[1]<0||n[1]>i)throw new Error("gl-texture2d: Invalid texture size");var s=a(n,e.stride.slice()),u=0;"float32"===r?u=t.FLOAT:"float64"===r?(u=t.FLOAT,s=!1,r="float32"):"uint8"===r?u=t.UNSIGNED_BYTE:(u=t.UNSIGNED_BYTE,s=!1,r="uint8");var c=0;if(2===n.length)c=t.LUMINANCE,n=[n[0],n[1],1],e=d(e.data,n,[e.stride[0],e.stride[1],1],e.offset);else{if(3!==n.length)throw new Error("gl-texture2d: Invalid shape for texture");if(1===n[2])c=t.ALPHA;else if(2===n[2])c=t.LUMINANCE_ALPHA;else if(3===n[2])c=t.RGB;else{if(4!==n[2])throw new Error("gl-texture2d: Invalid shape for pixel coords");c=t.RGBA}}u!==t.FLOAT||t.getExtension("OES_texture_float")||(u=t.UNSIGNED_BYTE,s=!1);var f,h,v=e.size;if(s)f=0===e.offset&&e.data.length===v?e.data:e.data.subarray(e.offset,e.offset+v);else{var m=[n[2],n[2]*n[0],1];h=g.malloc(v,r);var y=d(h,n,m,0);"float32"!==r&&"float64"!==r||u!==t.UNSIGNED_BYTE?p.assign(y,e):b(y,e),f=h.subarray(0,v)}var x=l(t);return t.texImage2D(t.TEXTURE_2D,0,c,n[0],n[1],0,c,u,f),s||g.free(h),new o(t,x,n[0],n[1],c,u)}function h(t){if(arguments.length<=1)throw new 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o=t("arraytools"),a=t("../../../lib/html2unicode"),s=t("../../../lib/str2rgbarray"),l=o.copy1D,u=["xaxis","yaxis","zaxis"],c=n.prototype;c.merge=function(t){for(var e=this,r=0;3>r;++r){var n=t[u[r]];e.labels[r]=a(n.title),"titlefont"in n&&(n.titlefont.color&&(e.labelColor[r]=s(n.titlefont.color)),n.titlefont.family&&(e.labelFont[r]=n.titlefont.family),n.titlefont.size&&(e.labelSize[r]=n.titlefont.size)),"showline"in n&&(e.lineEnable[r]=n.showline),"linecolor"in n&&(e.lineColor[r]=s(n.linecolor)),"linewidth"in n&&(e.lineWidth[r]=n.linewidth),"showgrid"in n&&(e.gridEnable[r]=n.showgrid),"gridcolor"in n&&(e.gridColor[r]=s(n.gridcolor)),
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f=!!r("aspectratio.x")&&!!r("aspectratio.y")&&!!r("aspectratio.z"),h=f?"manual":"auto",d=r("aspectmode",h);f||(t.aspectratio=e.aspectratio={x:1,y:1,z:1},"manual"===d&&(e.aspectmode="auto")),s(t,e,{font:n.font,scene:n.id,data:n.fullData,bgColor:l}),r("dragmode",n.getDfltFromLayout("dragmode")),r("hovermode",n.getDfltFromLayout("hovermode"))}var i=t("../../../components/color"),o=t("../../subplot_defaults"),a=t("./layout_attributes"),s=t("./axis_defaults");e.exports=function(t,e,r){function i(e){if(!s){var r=-1!==a[e].values.indexOf(t[e]);return r?t[e]:void 0}}var s=e._has("cartesian")||e._has("geo")||e._has("gl2d")||e._has("pie")||e._has("ternary");o(t,e,r,{type:"gl3d",attributes:a,handleDefaults:n,font:e.font,fullData:r,getDfltFromLayout:i,paper_bgcolor:e.paper_bgcolor})}},{"../../../components/color":267,"../../subplot_defaults":409,"./axis_defaults":393,"./layout_attributes":396}],396:[function(t,e,r){"use strict";function n(t,e,r){return{x:{valType:"number",dflt:t},y:{valType:"number",dflt:e},z:{valType:"number",dflt:r}}}var i=t("./axis_attributes"),o=t("../../../lib/extend").extendFlat;e.exports={bgcolor:{valType:"color",dflt:"rgba(0,0,0,0)"},camera:{up:o(n(0,0,1),{}),center:o(n(0,0,0),{}),eye:o(n(1.25,1.25,1.25),{})},domain:{x:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]},y:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]}},aspectmode:{valType:"enumerated",values:["auto","cube","data","manual"],dflt:"auto"},aspectratio:{x:{valType:"number",min:0},y:{valType:"number",min:0},z:{valType:"number",min:0}},xaxis:i,yaxis:i,zaxis:i,dragmode:{valType:"enumerated",values:["orbit","turntable","zoom","pan"],dflt:"turntable"},hovermode:{valType:"enumerated",values:["closest",!1],dflt:"closest"},_deprecated:{cameraposition:{valType:"info_array"}}}},{"../../../lib/extend":344,"./axis_attributes":392}],397:[function(t,e,r){"use strict";function n(){this.enabled=[!0,!0,!0],this.colors=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.drawSides=[!0,!0,!0],this.lineWidth=[1,1,1]}function i(t){var e=new n;return e.merge(t),e}var o=t("../../../lib/str2rgbarray"),a=["xaxis","yaxis","zaxis"],s=n.prototype;s.merge=function(t){for(var e=0;3>e;++e){var r=t[a[e]];this.enabled[e]=r.showspikes,this.colors[e]=o(r.spikecolor),this.drawSides[e]=r.spikesides,this.lineWidth[e]=r.spikethickness}},e.exports=i},{"../../../lib/str2rgbarray":359}],398:[function(t,e,r){"use strict";function n(t){for(var e=new Array(3),r=0;3>r;++r){for(var n=t[r],i=new Array(n.length),o=0;o<n.length;++o)i[o]=n[o].x;e[r]=i}return e}function i(t){for(var e=t.axesOptions,r=t.glplot.axesPixels,i=t.fullSceneLayout,u=[[],[],[]],c=0;3>c;++c){var f=i[s[c]];if(f._length=(r[c].hi-r[c].lo)*r[c].pixelsPerDataUnit/t.dataScale[c],Math.abs(f._length)===1/0)u[c]=[];else{f.range[0]=r[c].lo/t.dataScale[c],f.range[1]=r[c].hi/t.dataScale[c],f._m=1/(t.dataScale[c]*r[c].pixelsPerDataUnit),f.range[0]===f.range[1]&&(f.range[0]-=1,f.range[1]+=1);var h=f.tickmode;if("auto"===f.tickmode){f.tickmode="linear";var d=f.nticks||o.Lib.constrain(f._length/40,4,9);o.Axes.autoTicks(f,Math.abs(f.range[1]-f.range[0])/d)}for(var p=o.Axes.calcTicks(f),g=0;g<p.length;++g)p[g].x=p[g].x*t.dataScale[c],p[g].text=a(p[g].text);u[c]=p,f.tickmode=h}}e.ticks=u;for(var c=0;3>c;++c){l[c]=.5*(t.glplot.bounds[0][c]+t.glplot.bounds[1][c]);for(var g=0;2>g;++g)e.bounds[g][c]=t.glplot.bounds[g][c]}t.contourLevels=n(u)}e.exports=i;var o=t("../../../plotly"),a=t("../../../lib/html2unicode"),s=["xaxis","yaxis","zaxis"],l=[0,0,0]},{"../../../lib/html2unicode":346,"../../../plotly":367}],399:[function(t,e,r){"use strict";function n(t,e){var r,n,i=[0,0,0,0];for(r=0;4>r;++r)for(n=0;4>n;++n)i[n]+=t[4*r+n]*e[r];return i}function i(t,e){var r=n(t.projection,n(t.view,n(t.model,[e[0],e[1],e[2],1])));return r}e.exports=i},{}],400:[function(t,e,r){"use strict";function n(t){function e(e,r){if("string"==typeof r)return r;var n=t.fullSceneLayout[e];return g.tickText(n,n.c2l(r),"hover").text}var r,n=t.svgContainer,i=t.container.getBoundingClientRect(),o=i.width,a=i.height;n.setAttributeNS(null,"viewBox","0 0 "+o+" "+a),n.setAttributeNS(null,"width",o),n.setAttributeNS(null,"height",a),M(t),t.glplot.axes.update(t.axesOptions);for(var s=Object.keys(t.traces),l=null,u=t.glplot.selection,c=0;c<s.length;++c)r=t.traces[s[c]],r.handlePick(u)&&(l=r),r.setContourLevels&&r.setContourLevels();var f;if(null!==l){var h=x(t.glplot.cameraParams,u.dataCoordinate);r=l.data;var d=r.hoverinfo,p=e("xaxis",u.traceCoordinate[0]),m=e("yaxis",u.traceCoordinate[1]),y=e("zaxis",u.traceCoordinate[2]);if("all"!==d){var b=d.split("+");-1===b.indexOf("x")&&(p=void 0),-1===b.indexOf("y")&&(m=void 0),-1===b.indexOf("z")&&(y=void 0),-1===b.indexOf("text")&&(u.textLabel=void 0),-1===b.indexOf("name")&&(l.name=void 0)}t.fullSceneLayout.hovermode&&v.loneHover({x:(.5+.5*h[0]/h[3])*o,y:(.5-.5*h[1]/h[3])*a,xLabel:p,yLabel:m,zLabel:y,text:u.textLabel,name:l.name,color:l.color},{container:n});var _={points:[{x:p,y:m,z:y,data:r._input,fullData:r,curveNumber:r.index,pointNumber:u.data.index}]};u.buttons&&u.distance<5?t.graphDiv.emit("plotly_click",_):t.graphDiv.emit("plotly_hover",_),f=_}else v.loneUnhover(n),t.graphDiv.emit("plotly_unhover",f)}function i(t,e,r,i){var o={canvas:r,gl:i,container:t.container,axes:t.axesOptions,spikes:t.spikeOptions,pickRadius:10,snapToData:!0,autoScale:!0,autoBounds:!1};if(t.staticMode){if(!f){c=document.createElement("canvas");try{f=c.getContext("webgl",{preserveDrawingBuffer:!0,premultipliedAlpha:!0,antialias:!0})}catch(a){throw new Error("error creating static canvas/context for 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o=document.createElementNS("http://www.w3.org/2000/svg","svg");o.style.position="absolute",o.style.top=o.style.left="0px",o.style.width=o.style.height="100%",o.style["z-index"]=20,o.style["pointer-events"]="none",r.appendChild(o),this.svgContainer=o,r.id=t.id,r.style.position="absolute",r.style.top=r.style.left="0px",r.style.width=r.style.height="100%",n.appendChild(r),this.fullLayout=e,this.id=t.id||"scene",this.fullSceneLayout=e[this.id],this.plotArgs=[[],{},{}],this.axesOptions=w(e[this.id]),this.spikeOptions=A(e[this.id]),this.container=r,this.staticMode=!!t.staticPlot,this.pixelRatio=t.plotGlPixelRatio||2,this.dataScale=[1,1,1],this.contourLevels=[[],[],[]],!i(this,e)}function a(t,e,r,n){for(var i,o=0;o<e.length;++o)if(Array.isArray(e[o]))for(var a=0;a<e[o].length;++a)i=t.d2l(e[o][a]),!isNaN(i)&&isFinite(i)&&(n[0][r]=Math.min(n[0][r],i),n[1][r]=Math.max(n[1][r],i));else i=t.d2l(e[o]),!isNaN(i)&&isFinite(i)&&(n[0][r]=Math.min(n[0][r],i),n[1][r]=Math.max(n[1][r],i))}function s(t,e,r){var n=t.fullSceneLayout;a(n.xaxis,e.x,0,r),a(n.yaxis,e.y,1,r),a(n.zaxis,e.z,2,r)}function l(t){return[[t.eye.x,t.eye.y,t.eye.z],[t.center.x,t.center.y,t.center.z],[t.up.x,t.up.y,t.up.z]]}function u(t){return{up:{x:t.up[0],y:t.up[1],z:t.up[2]},center:{x:t.center[0],y:t.center[1],z:t.center[2]},eye:{x:t.eye[0],y:t.eye[1],z:t.eye[2]}}}var c,f,h=t("gl-plot3d"),d=t("../../lib"),p=t("../../plots/plots"),g=t("../../plots/cartesian/axes"),v=t("../../plots/cartesian/graph_interact"),m=t("../../lib/str2rgbarray"),y=t("../../lib/show_no_webgl_msg"),b=t("./camera"),x=t("./project"),_=t("./set_convert"),w=t("./layout/convert"),A=t("./layout/spikes"),M=t("./layout/tick_marks"),k=o.prototype;k.recoverContext=function(){function t(){return r.isContextLost()?void requestAnimationFrame(t):i(e,e.fullLayout,n,r)?void e.plot.apply(e,e.plotArgs):void d.error("Catastrophic and unrecoverable WebGL error. 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v=Object.keys(this.traces);t:for(o=0;o<v.length;++o){for(a=0;a<t.length;++a)if(t[a].uid===v[o]&&t[a].visible===!0)continue t;i=this.traces[v[o]],i.dispose(),delete this.traces[v[o]]}var y=[[0,0,0],[0,0,0]],b=[],x={};for(o=0;3>o;++o){if(l=c[T[o]],u=l.type,u in x?(x[u].acc*=d[o],x[u].count+=1):x[u]={acc:d[o],count:1},l.autorange){for(y[0][o]=1/0,y[1][o]=-(1/0),a=0;a<this.glplot.objects.length;++a){var w=this.glplot.objects[a].bounds;y[0][o]=Math.min(y[0][o],w[0][o]/d[o]),y[1][o]=Math.max(y[1][o],w[1][o]/d[o])}if("rangemode"in l&&"tozero"===l.rangemode&&(y[0][o]=Math.min(y[0][o],0),y[1][o]=Math.max(y[1][o],0)),y[0][o]>y[1][o])y[0][o]=-1,y[1][o]=1;else{var A=y[1][o]-y[0][o];y[0][o]-=A/32,y[1][o]+=A/32}}else{var M=c[T[o]].range;y[0][o]=M[0],y[1][o]=M[1]}y[0][o]===y[1][o]&&(y[0][o]-=1,y[1][o]+=1),b[o]=y[1][o]-y[0][o],this.glplot.bounds[0][o]=y[0][o]*d[o],this.glplot.bounds[1][o]=y[1][o]*d[o]}var k=[1,1,1];for(o=0;3>o;++o){l=c[T[o]],u=l.type;var E=x[u];k[o]=Math.pow(E.acc,1/E.count)/d[o]}var L,S=4;if("auto"===c.aspectmode)L=Math.max.apply(null,k)/Math.min.apply(null,k)<=S?k:[1,1,1];else if("cube"===c.aspectmode)L=[1,1,1];else if("data"===c.aspectmode)L=k;else{if("manual"!==c.aspectmode)throw new Error("scene.js aspectRatio was not one of the enumerated types");var C=c.aspectratio;L=[C.x,C.y,C.z]}c.aspectratio.x=f.aspectratio.x=L[0],c.aspectratio.y=f.aspectratio.y=L[1],c.aspectratio.z=f.aspectratio.z=L[2],this.glplot.aspect=L;var P=c.domain||null,R=e._size||null;if(P&&R){var N=this.container.style;N.position="absolute",N.left=R.l+P.x[0]*R.w+"px",N.top=R.t+(1-P.y[1])*R.h+"px",N.width=R.w*(P.x[1]-P.x[0])+"px",N.height=R.h*(P.y[1]-P.y[0])+"px"}this.glplot.redraw()}},k.destroy=function(){this.glplot.dispose(),this.container.parentNode.removeChild(this.container),this.glplot=null},k.setCameraToDefault=function(){this.setCamera({eye:{x:1.25,y:1.25,z:1.25},center:{x:0,y:0,z:0},up:{x:0,y:0,z:1}})},k.getCamera=function(){return this.glplot.camera.view.recalcMatrix(this.camera.view.lastT()),u(this.glplot.camera)},k.setCamera=function(t){var e={};e[this.id]=t,this.glplot.camera.lookAt.apply(this,l(t)),this.graphDiv.emit("plotly_relayout",e)},k.saveCamera=function(t){function e(t,e,r,n){var i=["up","center","eye"],o=["x","y","z"];return e[i[r]]&&t[i[r]][o[n]]===e[i[r]][o[n]]}var r=this.getCamera(),n=d.nestedProperty(t,this.id+".camera"),i=n.get(),o=!1;if(void 0===i)o=!0;else for(var a=0;3>a;a++)for(var s=0;3>s;s++)if(!e(r,i,a,s)){o=!0;break}return o&&n.set(r),o},k.updateFx=function(t,e){var r=this.camera;r&&("orbit"===t?(r.mode="orbit",r.keyBindingMode="rotate"):"turntable"===t?(r.up=[0,0,1],r.mode="turntable",r.keyBindingMode="rotate"):r.keyBindingMode=t),this.fullSceneLayout.hovermode=e},k.toImage=function(t){t||(t="png"),this.staticMode&&this.container.appendChild(c),this.glplot.redraw();var e=this.glplot.gl,r=e.drawingBufferWidth,n=e.drawingBufferHeight;e.bindFramebuffer(e.FRAMEBUFFER,null);var i=new Uint8Array(r*n*4);e.readPixels(0,0,r,n,e.RGBA,e.UNSIGNED_BYTE,i);for(var o=0,a=n-1;a>o;++o,--a)for(var s=0;r>s;++s)for(var l=0;4>l;++l){var u=i[4*(r*o+s)+l];i[4*(r*o+s)+l]=i[4*(r*a+s)+l],i[4*(r*a+s)+l]=u}var f=document.createElement("canvas");f.width=r,f.height=n;var h=f.getContext("2d"),d=h.createImageData(r,n);d.data.set(i),h.putImageData(d,0,0);var p;switch(t){case"jpeg":p=f.toDataURL("image/jpeg");break;case"webp":p=f.toDataURL("image/webp");break;default:p=f.toDataURL("image/png")}return this.staticMode&&this.container.removeChild(c),p},e.exports=o},{"../../lib":347,"../../lib/show_no_webgl_msg":357,"../../lib/str2rgbarray":359,"../../plots/cartesian/axes":370,"../../plots/cartesian/graph_interact":377,"../../plots/plots":403,"./camera":389,"./layout/convert":394,"./layout/spikes":397,"./layout/tick_marks":398,"./project":399,"./set_convert":401,"gl-plot3d":159}],401:[function(t,e,r){"use strict";var n=t("../cartesian/axes"),i=function(){};e.exports=function(t){n.setConvert(t),t.setScale=i}},{"../cartesian/axes":370}],402:[function(t,e,r){"use strict";var n=t("../plotly"),i=t("./font_attributes"),o=t("../components/color/attributes"),a=n.Lib.extendFlat;e.exports={font:{family:a({},i.family,{dflt:'"Open Sans", verdana, arial, sans-serif'}),size:a({},i.size,{dflt:12}),color:a({},i.color,{dflt:o.defaultLine})},title:{valType:"string",dflt:"Click to enter Plot 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n=a({},t),i=[[n,["marker","color"],["color"]],[n,["marker","opacity"],["opacity"]],[n,["marker","line","color"],["strokeColor"]],[n,["marker","line","dash"],["strokeDash"]],[n,["marker","line","width"],["strokeSize"]],[n,["marker","symbol"],["dotType"]],[n,["marker","size"],["dotSize"]],[n,["marker","barWidth"],["barWidth"]],[n,["line","interpolation"],["lineInterpolation"]],[n,["showlegend"],["visibleInLegend"]]];return i.forEach(function(t,r){o.util.translator.apply(null,t.concat(e))}),e||delete n.marker,e&&delete n.groupId,e?("LinePlot"===n.geometry?(n.type="scatter",n.dotVisible===!0?(delete n.dotVisible,n.mode="lines+markers"):n.mode="lines"):"DotPlot"===n.geometry?(n.type="scatter",n.mode="markers"):"AreaChart"===n.geometry?n.type="area":"BarChart"===n.geometry&&(n.type="bar"),delete 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n=t("d3"),i=t("../lib/svg_text_utils"),o=t("../components/drawing"),a=t("../components/color"),s=t("../constants/xmlns_namespaces");e.exports=function(t,e){var r,l=t._fullLayout,u=l._paper,c=l._toppaper;u.insert("rect",":first-child").call(o.setRect,0,0,l.width,l.height).call(a.fill,l.paper_bgcolor);var f=l._basePlotModules||[];for(r=0;r<f.length;r++){var h=f[r];h.toSVG&&h.toSVG(t)}if(c){var d=c.node().childNodes,p=Array.prototype.slice.call(d);for(r=0;r<p.length;r++){var g=p[r];g.childNodes.length&&u.node().appendChild(g)}}l._draggers&&l._draggers.remove(),u.node().style.background="",u.selectAll("text").attr("data-unformatted",null).each(function(){var t=n.select(this);if("hidden"===t.style("visibility"))return void t.remove();var e=t.style("font-family");e&&-1!==e.indexOf('"')&&t.style("font-family",e.replace(/"/g,"TOBESTRIPPED"))}),"pdf"!==e&&"eps"!==e||u.selectAll("#MathJax_SVG_glyphs 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n=t("../../lib"),i=t("./attributes"),o=t("./constants"),a=t("./subtypes"),s=t("./xy_defaults"),l=t("./marker_defaults"),u=t("./line_defaults"),c=t("./line_shape_defaults"),f=t("./text_defaults"),h=t("./fillcolor_defaults"),d=t("../../components/errorbars/defaults");e.exports=function(t,e,r,p){function g(r,o){return n.coerce(t,e,i,r,o)}var v=s(t,e,g),m=v<o.PTS_LINESONLY?"lines+markers":"lines";if(!v)return void(e.visible=!1);g("text"),g("mode",m),a.hasLines(e)&&(u(t,e,r,p,g),c(t,e,g),g("connectgaps")),a.hasMarkers(e)&&l(t,e,r,p,g),a.hasText(e)&&f(t,e,p,g);var 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Math.max(Math.abs(d.c2p(t.y)-g)-e,1-3/e)},b=function(t){var e=Math.max(3,t.mrc||0),r=h.c2p(t.x)-p,n=d.c2p(t.y)-g;return Math.max(Math.sqrt(r*r+n*n)-e,1-3/e)},x=i.getDistanceFunction(u,m,y,b);if(i.getClosest(c,x,t),t.index!==!1){var _=c[t.index],w=h.c2p(_.x,!0),A=d.c2p(_.y,!0),M=_.mrc||1;return n.extendFlat(t,{color:s(f,_),x0:w-M,x1:w+M,xLabelVal:_.x,y0:A-M,y1:A+M,yLabelVal:_.y}),_.tx?t.text=_.tx:f.text&&(t.text=f.text),a.hoverInfo(_,f,t),[t]}}if(-1!==f.hoveron.indexOf("fills")&&f._polygons){var k,T,E,L,S,C,P,R,N,z=f._polygons,I=[],O=!1,j=1/0,D=-(1/0),F=1/0,B=-(1/0);for(k=0;k<z.length;k++)E=z[k],E.contains(v)&&(O=!O,I.push(E),F=Math.min(F,E.ymin),B=Math.max(B,E.ymax));if(O){F=Math.max(F,0),B=Math.min(B,d._length);var U=(F+B)/2;for(k=0;k<I.length;k++)for(L=I[k].pts,T=1;T<L.length;T++)R=L[T-1][1],N=L[T][1],R>U!=N>=U&&(C=L[T-1][0],P=L[T][0],S=C+(P-C)*(U-R)/(N-R),j=Math.min(j,S),D=Math.max(D,S));j=Math.max(j,0),D=Math.min(D,h._length);var V=l.defaultLine;return l.opacity(f.fillcolor)?V=f.fillcolor:l.opacity((f.line||{}).color)&&(V=f.line.color),n.extendFlat(t,{distance:o.MAXDIST+10,x0:j,x1:D,y0:U,y1:U,color:V}),delete t.index,f.text&&!Array.isArray(f.text)?t.text=String(f.text):t.text=f.name,[t]}}}},{"../../components/color":267,"../../components/errorbars":296,"../../lib":347,"../../plots/cartesian/constants":375,"../../plots/cartesian/graph_interact":377,"./get_trace_color":432}],434:[function(t,e,r){"use strict";var n={},i=t("./subtypes");n.hasLines=i.hasLines,n.hasMarkers=i.hasMarkers,n.hasText=i.hasText,n.isBubble=i.isBubble,n.attributes=t("./attributes"),n.supplyDefaults=t("./defaults"),n.cleanData=t("./clean_data"),n.calc=t("./calc"),n.arraysToCalcdata=t("./arrays_to_calcdata"),n.plot=t("./plot"),n.colorbar=t("./colorbar"),n.style=t("./style"),n.hoverPoints=t("./hover"),n.selectPoints=t("./select"),n.moduleType="trace",n.name="scatter",n.basePlotModule=t("../../plots/cartesian"),n.categories=["cartesian","symbols","markerColorscale","errorBarsOK","showLegend"],n.meta={},e.exports=n},{"../../plots/cartesian":378,"./arrays_to_calcdata":423,"./attributes":424,"./calc":425,"./clean_data":426,"./colorbar":427,"./defaults":430,"./hover":433,"./plot":440,"./select":441,"./style":442,"./subtypes":443}],435:[function(t,e,r){"use strict";var n=t("../../components/colorscale/has_colorscale"),i=t("../../components/colorscale/defaults");e.exports=function(t,e,r,o,a){var 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h=i(l.position,l.delaunayColor,l.delaunayAxis);h.opacity=t.opacity,this.delaunayMesh?this.delaunayMesh.update(h):(h.gl=a,this.delaunayMesh=v(h),this.scene.glplot.add(this.delaunayMesh))}else 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o=t("../../components/color"),a=t("../../components/colorscale/attributes"),s=t("../../lib/extend").extendFlat;e.exports={z:{valType:"data_array"},x:{valType:"data_array"},y:{valType:"data_array"},text:{valType:"data_array"},surfacecolor:{valType:"data_array"},cauto:a.zauto,cmin:a.zmin,cmax:a.zmax,colorscale:a.colorscale,autocolorscale:s({},a.autocolorscale,{dflt:!1}),reversescale:a.reversescale,showscale:a.showscale,contours:{x:i("x"),y:i("y"),z:i("z")},hidesurface:{valType:"boolean",dflt:!1},lightposition:{x:{valType:"number",min:-1e5,max:1e5,dflt:10},y:{valType:"number",min:-1e5,max:1e5,dflt:1e4},z:{valType:"number",min:-1e5,max:1e5,dflt:0}},lighting:{ambient:{valType:"number",min:0,max:1,dflt:.8},diffuse:{valType:"number",min:0,max:1,dflt:.8},specular:{valType:"number",min:0,max:2,dflt:.05},roughness:{valType:"number",min:0,max:1,dflt:.5},fresnel:{valType:"number",min:0,max:5,dflt:.2}},opacity:{valType:"number",min:0,max:1,dflt:1},_nestedModules:{colorbar:"Colorbar"},_deprecated:{zauto:s({},a.zauto,{}),zmin:s({},a.zmin,{}),zmax:s({},a.zmax,{})}}},{"../../components/color":267,"../../components/colorscale/attributes":273,"../../lib/extend":344}],453:[function(t,e,r){"use 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n=this.scene.fullSceneLayout;t.dataCoordinate=[n.xaxis.d2l(r[0])*this.scene.dataScale[0],n.yaxis.d2l(r[1])*this.scene.dataScale[1],n.zaxis.d2l(r[2])*this.scene.dataScale[2]];var i=this.data.text;return i&&i[e[1]]&&void 0!==i[e[1]][e[0]]?t.textLabel=i[e[1]][e[0]]:t.textLabel="",t.data.dataCoordinate=t.dataCoordinate.slice(),this.surface.highlight(t.data),this.scene.glplot.spikes.position=t.dataCoordinate,!0}},v.setContourLevels=function(){for(var t=[[],[],[]],e=!1,r=0;3>r;++r)this.showContour[r]&&(e=!0,t[r]=this.scene.contourLevels[r]);e&&this.surface.update({levels:t})},v.update=function(t){var e,r=this.scene,n=r.fullSceneLayout,o=this.surface,s=t.opacity,l=i(t.colorscale,s),c=t.z,h=t.x,d=t.y,g=n.xaxis,v=n.yaxis,m=n.zaxis,y=r.dataScale,b=c[0].length,x=c.length,_=[u(new Float32Array(b*x),[b,x]),u(new Float32Array(b*x),[b,x]),u(new Float32Array(b*x),[b,x])],w=_[0],A=_[1],M=r.contourLevels;this.data=t,f(_[2],function(t,e){return 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e>=4096&&(r+=13,e>>>=13),e>=64&&(r+=7,e>>>=7),e>=8&&(r+=4,e>>>=4),e>=2&&(r+=2,e>>>=2),r+e},i.prototype._zeroBits=function(t){if(0===t)return 26;var e=t,r=0;return 0===(8191&e)&&(r+=13,e>>>=13),0===(127&e)&&(r+=7,e>>>=7),0===(15&e)&&(r+=4,e>>>=4),0===(3&e)&&(r+=2,e>>>=2),0===(1&e)&&r++,r},i.prototype.bitLength=function(){var t=0,e=this.words[this.length-1],t=this._countBits(e);return 26*(this.length-1)+t},i.prototype.zeroBits=function(){if(0===this.cmpn(0))return 0;for(var t=0,e=0;e<this.length;e++){var r=this._zeroBits(this.words[e]);if(t+=r,26!==r)break}return t},i.prototype.byteLength=function(){return Math.ceil(this.bitLength()/8)},i.prototype.neg=function(){if(0===this.cmpn(0))return this.clone();var t=this.clone();return t.sign=!this.sign,t},i.prototype.ior=function(t){for(this.sign=this.sign||t.sign;this.length<t.length;)this.words[this.length++]=0;for(var e=0;e<t.length;e++)this.words[e]=this.words[e]|t.words[e];return this.strip()},i.prototype.or=function(t){return this.length>t.length?this.clone().ior(t):t.clone().ior(this)},i.prototype.iand=function(t){this.sign=this.sign&&t.sign;var e;e=this.length>t.length?t:this;for(var r=0;r<e.length;r++)this.words[r]=this.words[r]&t.words[r];return this.length=e.length,this.strip()},i.prototype.and=function(t){return this.length>t.length?this.clone().iand(t):t.clone().iand(this)},i.prototype.ixor=function(t){this.sign=this.sign||t.sign;var e,r;this.length>t.length?(e=this,r=t):(e=t,r=this);for(var n=0;n<r.length;n++)this.words[n]=e.words[n]^r.words[n];if(this!==e)for(;n<e.length;n++)this.words[n]=e.words[n];return this.length=e.length,this.strip()},i.prototype.xor=function(t){return this.length>t.length?this.clone().ixor(t):t.clone().ixor(this)},i.prototype.setn=function(t,e){r("number"==typeof t&&t>=0);for(var n=t/26|0,i=t%26;this.length<=n;)this.words[this.length++]=0;return e?this.words[n]=this.words[n]|1<<i:this.words[n]=this.words[n]&~(1<<i),this.strip()},i.prototype.iadd=function(t){if(this.sign&&!t.sign){this.sign=!1;var e=this.isub(t);return this.sign=!this.sign,this._normSign()}if(!this.sign&&t.sign){t.sign=!1;var e=this.isub(t);return t.sign=!0,e._normSign()}var r,n;this.length>t.length?(r=this,n=t):(r=t,n=this);for(var i=0,o=0;o<n.length;o++){var e=r.words[o]+n.words[o]+i;this.words[o]=67108863&e,i=e>>>26}for(;0!==i&&o<r.length;o++){var e=r.words[o]+i;this.words[o]=67108863&e,i=e>>>26}if(this.length=r.length,0!==i)this.words[this.length]=i,this.length++;else if(r!==this)for(;o<r.length;o++)this.words[o]=r.words[o];return this},i.prototype.add=function(t){if(t.sign&&!this.sign){t.sign=!1;var e=this.sub(t);return t.sign=!0,e}if(!t.sign&&this.sign){this.sign=!1;var e=t.sub(this);return this.sign=!0,e}return this.length>t.length?this.clone().iadd(t):t.clone().iadd(this)},i.prototype.isub=function(t){if(t.sign){t.sign=!1;var e=this.iadd(t);return t.sign=!0,e._normSign()}if(this.sign)return this.sign=!1,this.iadd(t),this.sign=!0,this._normSign();var r=this.cmp(t);if(0===r)return this.sign=!1,this.length=1,this.words[0]=0,this;var n,i;r>0?(n=this,i=t):(n=t,i=this);for(var o=0,a=0;a<i.length;a++){var e=n.words[a]-i.words[a]+o;o=e>>26,this.words[a]=67108863&e}for(;0!==o&&a<n.length;a++){var e=n.words[a]+o;o=e>>26,this.words[a]=67108863&e}if(0===o&&a<n.length&&n!==this)for(;a<n.length;a++)this.words[a]=n.words[a];return this.length=Math.max(this.length,a),n!==this&&(this.sign=!0),this.strip()},i.prototype.sub=function(t){return this.clone().isub(t)},i.prototype._smallMulTo=function(t,e){e.sign=t.sign!==this.sign,e.length=this.length+t.length;for(var r=0,n=0;n<e.length-1;n++){for(var i=r>>>26,o=67108863&r,a=Math.min(n,t.length-1),s=Math.max(0,n-this.length+1);s<=a;s++){var l=n-s,u=0|this.words[l],c=0|t.words[s],f=u*c,h=67108863&f;i=i+(f/67108864|0)|0,h=h+o|0,o=67108863&h,i=i+(h>>>26)|0}e.words[n]=o,r=i}return 0!==r?e.words[n]=r:e.length--,e.strip()},i.prototype._bigMulTo=function(t,e){e.sign=t.sign!==this.sign,e.length=this.length+t.length;for(var r=0,n=0,i=0;i<e.length-1;i++){var o=n;n=0;for(var a=67108863&r,s=Math.min(i,t.length-1),l=Math.max(0,i-this.length+1);l<=s;l++){var u=i-l,c=0|this.words[u],f=0|t.words[l],h=c*f,d=67108863&h;o=o+(h/67108864|0)|0,d=d+a|0,a=67108863&d,o=o+(d>>>26)|0,n+=o>>>26,o&=67108863}e.words[i]=a,r=o,o=n}return 0!==r?e.words[i]=r:e.length--,e.strip()},i.prototype.mulTo=function(t,e){var r;return r=this.length+t.length<63?this._smallMulTo(t,e):this._bigMulTo(t,e)},i.prototype.mul=function(t){var e=new i(null);return e.words=new Array(this.length+t.length),this.mulTo(t,e)},i.prototype.imul=function(t){if(0===this.cmpn(0)||0===t.cmpn(0))return this.words[0]=0,this.length=1,this;var e=this.length,r=t.length;this.sign=t.sign!==this.sign,this.length=this.length+t.length,this.words[this.length-1]=0;for(var n=this.length-2;n>=0;n--){for(var i=0,o=0,a=Math.min(n,r-1),s=Math.max(0,n-e+1);s<=a;s++){var l=n-s,u=this.words[l],c=t.words[s],f=u*c,h=67108863&f;i+=f/67108864|0,h+=o,o=67108863&h,i+=h>>>26}this.words[n]=o,this.words[n+1]+=i,i=0}for(var i=0,l=1;l<this.length;l++){var d=this.words[l]+i;this.words[l]=67108863&d,i=d>>>26}return this.strip()},i.prototype.imuln=function(t){r("number"==typeof t);for(var e=0,n=0;n<this.length;n++){var i=this.words[n]*t,o=(67108863&i)+(67108863&e);e>>=26,e+=i/67108864|0,e+=o>>>26,this.words[n]=67108863&o}return 0!==e&&(this.words[n]=e,this.length++),this},i.prototype.muln=function(t){return this.clone().imuln(t)},i.prototype.sqr=function(){return this.mul(this)},i.prototype.isqr=function(){return this.mul(this)},i.prototype.ishln=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=67108863>>>26-e<<26-e;if(0!==e){for(var o=0,a=0;a<this.length;a++){var s=this.words[a]&i,l=this.words[a]-s<<e;this.words[a]=l|o,o=s>>>26-e}o&&(this.words[a]=o,this.length++)}if(0!==n){for(var a=this.length-1;a>=0;a--)this.words[a+n]=this.words[a];for(var a=0;a<n;a++)this.words[a]=0;this.length+=n}return this.strip()},i.prototype.ishrn=function(t,e,n){r("number"==typeof t&&t>=0);var i;i=e?(e-e%26)/26:0;var o=t%26,a=Math.min((t-o)/26,this.length),s=67108863^67108863>>>o<<o,l=n;if(i-=a,i=Math.max(0,i),l){for(var u=0;u<a;u++)l.words[u]=this.words[u];l.length=a}if(0===a);else if(this.length>a){this.length-=a;for(var u=0;u<this.length;u++)this.words[u]=this.words[u+a]}else this.words[0]=0,this.length=1;for(var c=0,u=this.length-1;u>=0&&(0!==c||u>=i);u--){var f=this.words[u];this.words[u]=c<<26-o|f>>>o,c=f&s}return l&&0!==c&&(l.words[l.length++]=c),0===this.length&&(this.words[0]=0,this.length=1),this.strip(),this},i.prototype.shln=function(t){return this.clone().ishln(t)},i.prototype.shrn=function(t){return this.clone().ishrn(t)},i.prototype.testn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n)return!1;var o=this.words[n];return!!(o&i)},i.prototype.imaskn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26;if(r(!this.sign,"imaskn works only with positive numbers"),0!==e&&n++,this.length=Math.min(n,this.length),0!==e){var i=67108863^67108863>>>e<<e;this.words[this.length-1]&=i}return this.strip()},i.prototype.maskn=function(t){return this.clone().imaskn(t)},i.prototype.iaddn=function(t){return r("number"==typeof t),t<0?this.isubn(-t):this.sign?1===this.length&&this.words[0]<t?(this.words[0]=t-this.words[0],this.sign=!1,this):(this.sign=!1,this.isubn(t),this.sign=!0,this):this._iaddn(t)},i.prototype._iaddn=function(t){this.words[0]+=t;for(var e=0;e<this.length&&this.words[e]>=67108864;e++)this.words[e]-=67108864,e===this.length-1?this.words[e+1]=1:this.words[e+1]++;return this.length=Math.max(this.length,e+1),this},i.prototype.isubn=function(t){if(r("number"==typeof t),t<0)return this.iaddn(-t);if(this.sign)return this.sign=!1,this.iaddn(t),this.sign=!0,this;this.words[0]-=t;for(var e=0;e<this.length&&this.words[e]<0;e++)this.words[e]+=67108864,this.words[e+1]-=1;return this.strip()},i.prototype.addn=function(t){return this.clone().iaddn(t)},i.prototype.subn=function(t){return this.clone().isubn(t)},i.prototype.iabs=function(){return this.sign=!1,this},i.prototype.abs=function(){return this.clone().iabs()},i.prototype._ishlnsubmul=function(t,e,n){var i,o=t.length+n;if(this.words.length<o){for(var a=new Array(o),i=0;i<this.length;i++)a[i]=this.words[i];this.words=a}else i=this.length;for(this.length=Math.max(this.length,o);i<this.length;i++)this.words[i]=0;for(var s=0,i=0;i<t.length;i++){var l=this.words[i+n]+s,u=t.words[i]*e;l-=67108863&u,s=(l>>26)-(u/67108864|0),this.words[i+n]=67108863&l}for(;i<this.length-n;i++){var l=this.words[i+n]+s;s=l>>26,this.words[i+n]=67108863&l}if(0===s)return this.strip();r(s===-1),s=0;for(var i=0;i<this.length;i++){var l=-this.words[i]+s;s=l>>26,this.words[i]=67108863&l}return this.sign=!0,this.strip()},i.prototype._wordDiv=function(t,e){var r=this.length-t.length,n=this.clone(),o=t,a=o.words[o.length-1],s=this._countBits(a);r=26-s,0!==r&&(o=o.shln(r),n.ishln(r),a=o.words[o.length-1]);var l,u=n.length-o.length;if("mod"!==e){l=new i(null),l.length=u+1,l.words=new Array(l.length);for(var c=0;c<l.length;c++)l.words[c]=0}var f=n.clone()._ishlnsubmul(o,1,u);f.sign||(n=f,l&&(l.words[u]=1));for(var h=u-1;h>=0;h--){var d=67108864*n.words[o.length+h]+n.words[o.length+h-1];for(d=Math.min(d/a|0,67108863),n._ishlnsubmul(o,d,h);n.sign;)d--,n.sign=!1,n._ishlnsubmul(o,1,h),0!==n.cmpn(0)&&(n.sign=!n.sign);l&&(l.words[h]=d)}return l&&l.strip(),n.strip(),"div"!==e&&0!==r&&n.ishrn(r),{div:l?l:null,mod:n}},i.prototype.divmod=function(t,e){if(r(0!==t.cmpn(0)),this.sign&&!t.sign){var n,o,a=this.neg().divmod(t,e);return"mod"!==e&&(n=a.div.neg()),"div"!==e&&(o=0===a.mod.cmpn(0)?a.mod:t.sub(a.mod)),{div:n,mod:o}}if(!this.sign&&t.sign){var n,a=this.divmod(t.neg(),e);return"mod"!==e&&(n=a.div.neg()),{div:n,mod:a.mod}}return this.sign&&t.sign?this.neg().divmod(t.neg(),e):t.length>this.length||this.cmp(t)<0?{div:new i(0),mod:this}:1===t.length?"div"===e?{div:this.divn(t.words[0]),mod:null}:"mod"===e?{div:null,mod:new i(this.modn(t.words[0]))}:{div:this.divn(t.words[0]),mod:new i(this.modn(t.words[0]))}:this._wordDiv(t,e)},i.prototype.div=function(t){return this.divmod(t,"div").div},i.prototype.mod=function(t){return this.divmod(t,"mod").mod},i.prototype.divRound=function(t){var e=this.divmod(t);if(0===e.mod.cmpn(0))return e.div;var r=e.div.sign?e.mod.isub(t):e.mod,n=t.shrn(1),i=t.andln(1),o=r.cmp(n);return o<0||1===i&&0===o?e.div:e.div.sign?e.div.isubn(1):e.div.iaddn(1)},i.prototype.modn=function(t){r(t<=67108863);for(var e=(1<<26)%t,n=0,i=this.length-1;i>=0;i--)n=(e*n+this.words[i])%t;return n},i.prototype.idivn=function(t){r(t<=67108863);for(var e=0,n=this.length-1;n>=0;n--){var i=this.words[n]+67108864*e;this.words[n]=i/t|0,e=i%t}return this.strip()},i.prototype.divn=function(t){return this.clone().idivn(t)},i.prototype.egcd=function(t){r(!t.sign),r(0!==t.cmpn(0));var e=this,n=t.clone();e=e.sign?e.mod(t):e.clone();for(var o=new i(1),a=new i(0),s=new i(0),l=new i(1),u=0;e.isEven()&&n.isEven();)e.ishrn(1),n.ishrn(1),++u;for(var c=n.clone(),f=e.clone();0!==e.cmpn(0);){for(;e.isEven();)e.ishrn(1),o.isEven()&&a.isEven()?(o.ishrn(1),a.ishrn(1)):(o.iadd(c).ishrn(1),a.isub(f).ishrn(1));for(;n.isEven();)n.ishrn(1),s.isEven()&&l.isEven()?(s.ishrn(1),l.ishrn(1)):(s.iadd(c).ishrn(1),l.isub(f).ishrn(1));e.cmp(n)>=0?(e.isub(n),o.isub(s),a.isub(l)):(n.isub(e),s.isub(o),l.isub(a))}return{a:s,b:l,gcd:n.ishln(u)}},i.prototype._invmp=function(t){r(!t.sign),r(0!==t.cmpn(0));var e=this,n=t.clone();e=e.sign?e.mod(t):e.clone();for(var o=new i(1),a=new i(0),s=n.clone();e.cmpn(1)>0&&n.cmpn(1)>0;){for(;e.isEven();)e.ishrn(1),o.isEven()?o.ishrn(1):o.iadd(s).ishrn(1);for(;n.isEven();)n.ishrn(1),a.isEven()?a.ishrn(1):a.iadd(s).ishrn(1);e.cmp(n)>=0?(e.isub(n),o.isub(a)):(n.isub(e),a.isub(o))}return 0===e.cmpn(1)?o:a},i.prototype.gcd=function(t){if(0===this.cmpn(0))return t.clone();if(0===t.cmpn(0))return this.clone();var e=this.clone(),r=t.clone();e.sign=!1,r.sign=!1;for(var n=0;e.isEven()&&r.isEven();n++)e.ishrn(1),r.ishrn(1);for(;;){for(;e.isEven();)e.ishrn(1);for(;r.isEven();)r.ishrn(1);var i=e.cmp(r);if(i<0){var o=e;e=r,r=o}else if(0===i||0===r.cmpn(1))break;e.isub(r)}return r.ishln(n)},i.prototype.invm=function(t){return this.egcd(t).a.mod(t)},i.prototype.isEven=function(){return 0===(1&this.words[0])},i.prototype.isOdd=function(){return 1===(1&this.words[0])},i.prototype.andln=function(t){return this.words[0]&t},i.prototype.bincn=function(t){r("number"==typeof t);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n){for(var o=this.length;o<n+1;o++)this.words[o]=0;return this.words[n]|=i,this.length=n+1,this}for(var a=i,o=n;0!==a&&o<this.length;o++){var s=this.words[o];s+=a,a=s>>>26,s&=67108863,this.words[o]=s}return 0!==a&&(this.words[o]=a,this.length++),this},i.prototype.cmpn=function(t){var e=t<0;if(e&&(t=-t),this.sign&&!e)return-1;if(!this.sign&&e)return 1;t&=67108863,this.strip();var r;if(this.length>1)r=1;else{var n=this.words[0];r=n===t?0:n<t?-1:1}return this.sign&&(r=-r),r},i.prototype.cmp=function(t){if(this.sign&&!t.sign)return-1;if(!this.sign&&t.sign)return 1;var e=this.ucmp(t);return this.sign?-e:e},i.prototype.ucmp=function(t){if(this.length>t.length)return 1;if(this.length<t.length)return-1;for(var e=0,r=this.length-1;r>=0;r--){var n=this.words[r],i=t.words[r];if(n!==i){n<i?e=-1:n>i&&(e=1);break}}return e},i.red=function(t){return new h(t)},i.prototype.toRed=function(t){return r(!this.red,"Already a number in reduction 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o=e(t,r.key);n.push(r),o>0&&(i=n.length),r=o<=0?r.left:r.right}return n.length=i,new f(this,n)},y.le=function(t){for(var e=this._compare,r=this.root,n=[],i=0;r;){var o=e(t,r.key);n.push(r),o>=0&&(i=n.length),r=o<0?r.left:r.right}return n.length=i,new f(this,n)},y.find=function(t){for(var e=this._compare,r=this.root,n=[];r;){var i=e(t,r.key);if(n.push(r),0===i)return new f(this,n);r=i<=0?r.left:r.right}return new f(this,[])},y.remove=function(t){var e=this.find(t);return e?e.remove():this},y.get=function(t){for(var e=this._compare,r=this.root;r;){var n=e(t,r.key);if(0===n)return r.value;r=n<=0?r.left:r.right}};var b=f.prototype;Object.defineProperty(b,"valid",{get:function(){return this._stack.length>0}}),Object.defineProperty(b,"node",{get:function(){return this._stack.length>0?this._stack[this._stack.length-1]:null},enumerable:!0}),b.clone=function(){return new f(this.tree,this._stack.slice())},b.remove=function(){var t=this._stack;if(0===t.length)return this.tree;var e=new 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i=0;i<e.length;++i)e[i]._count--;var u=e[e.length-2];return d(e),u.left===r?u.left=null:u.right=null,new s(this.tree._compare,e[0])},Object.defineProperty(b,"key",{get:function(){if(this._stack.length>0)return this._stack[this._stack.length-1].key},enumerable:!0}),Object.defineProperty(b,"value",{get:function(){if(this._stack.length>0)return this._stack[this._stack.length-1].value},enumerable:!0}),Object.defineProperty(b,"index",{get:function(){var t=0,e=this._stack;if(0===e.length){var r=this.tree.root;return r?r._count:0}e[e.length-1].left&&(t=e[e.length-1].left._count);for(var n=e.length-2;n>=0;--n)e[n+1]===e[n].right&&(++t,e[n].left&&(t+=e[n].left._count));return t},enumerable:!0}),b.next=function(){var t=this._stack;if(0!==t.length){var e=t[t.length-1];if(e.right)for(e=e.right;e;)t.push(e),e=e.left;else for(t.pop();t.length>0&&t[t.length-1].right===e;)e=t[t.length-1],t.pop()}},Object.defineProperty(b,"hasNext",{get:function(){var t=this._stack;if(0===t.length)return!1;if(t[t.length-1].right)return!0;for(var e=t.length-1;e>0;--e)if(t[e-1].left===t[e])return!0;return!1}}),b.update=function(t){var e=this._stack;if(0===e.length)throw new Error("Can't update empty node!");var r=new Array(e.length),i=e[e.length-1];r[r.length-1]=new n(i._color,i.key,t,i.left,i.right,i._count);for(var o=e.length-2;o>=0;--o)i=e[o],i.left===e[o+1]?r[o]=new n(i._color,i.key,i.value,r[o+1],i.right,i._count):r[o]=new n(i._color,i.key,i.value,i.left,r[o+1],i._count);return new s(this.tree._compare,r[0])},b.prev=function(){var t=this._stack;if(0!==t.length){var e=t[t.length-1];if(e.left)for(e=e.left;e;)t.push(e),e=e.right;else for(t.pop();t.length>0&&t[t.length-1].left===e;)e=t[t.length-1],t.pop()}},Object.defineProperty(b,"hasPrev",{get:function(){var t=this._stack;if(0===t.length)return!1;if(t[t.length-1].left)return!0;for(var e=t.length-1;e>0;--e)if(t[e-1].right===t[e])return!0;return!1}})},{}],85:[function(t,e,r){function n(t){if(t<0)return Number("0/0");for(var e=s[0],r=s.length-1;r>0;--r)e+=s[r]/(t+r);var n=t+a+.5;return.5*Math.log(2*Math.PI)+(t+.5)*Math.log(n)-n+Math.log(e)-Math.log(t)}var i=7,o=[.9999999999998099,676.5203681218851,-1259.1392167224028,771.3234287776531,-176.6150291621406,12.507343278686905,-.13857109526572012,9984369578019572e-21,1.5056327351493116e-7],a=607/128,s=[.9999999999999971,57.15623566586292,-59.59796035547549,14.136097974741746,-.4919138160976202,3399464998481189e-20,4652362892704858e-20,-9837447530487956e-20,.0001580887032249125,-.00021026444172410488,.00021743961811521265,-.0001643181065367639,8441822398385275e-20,-26190838401581408e-21,36899182659531625e-22];e.exports=function t(e){if(e<.5)return Math.PI/(Math.sin(Math.PI*e)*t(1-e));if(e>100)return Math.exp(n(e));e-=1;for(var r=o[0],a=1;a<i+2;a++)r+=o[a]/(e+a);var s=e+i+.5;return Math.sqrt(2*Math.PI)*Math.pow(s,e+.5)*Math.exp(-s)*r},e.exports.log=n},{}],86:[function(t,e,r){"use strict";function n(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t}function 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o(){this.primalOffset=[0,0,0],this.primalMinor=[0,0,0],this.mirrorOffset=[0,0,0],this.mirrorMinor=[0,0,0]}function a(t,e,r,n,i){for(var o=t.primalOffset,a=t.primalMinor,s=t.mirrorOffset,l=t.mirrorMinor,u=n[e],c=0;c<3;++c)if(e!==c){var f=o,h=s,d=a,p=l;u&1<<c&&(f=s,h=o,d=l,p=a),f[c]=r[0][c],h[c]=r[1][c],i[c]>0?(d[c]=-1,p[c]=0):(d[c]=0,p[c]=1)}}function s(t,e){var r=new i(t);return r.update(e),r}e.exports=s;var l=t("./lib/text.js"),u=t("./lib/lines.js"),c=t("./lib/background.js"),f=t("./lib/cube.js"),h=t("./lib/ticks.js"),d=new Float32Array([1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]),p=i.prototype;p.update=function(t){function e(e,r,n){if(n in t){var i,o=t[n],a=this[n];(e?Array.isArray(o)&&Array.isArray(o[0]):Array.isArray(o))?this[n]=i=[r(o[0]),r(o[1]),r(o[2])]:this[n]=i=[r(o),r(o),r(o)];for(var s=0;s<3;++s)if(i[s]!==a[s])return!0}return!1}t=t||{};var r,n=e.bind(this,!1,Number),i=e.bind(this,!1,Boolean),o=e.bind(this,!1,String),a=e.bind(this,!0,function(t){if(Array.isArray(t)){if(3===t.length)return[+t[0],+t[1],+t[2],1];if(4===t.length)return[+t[0],+t[1],+t[2],+t[3]]}return[0,0,0,1]}),s=!1,c=!1;if("bounds"in t)for(var f=t.bounds,d=0;d<2;++d)for(var p=0;p<3;++p)f[d][p]!==this.bounds[d][p]&&(c=!0),this.bounds[d][p]=f[d][p];if("ticks"in t){r=t.ticks,s=!0,this.autoTicks=!1;for(var d=0;d<3;++d)this.tickSpacing[d]=0}else n("tickSpacing")&&(this.autoTicks=!0,c=!0);if(this._firstInit&&("ticks"in t||"tickSpacing"in t||(this.autoTicks=!0),c=!0,s=!0,this._firstInit=!1),c&&this.autoTicks&&(r=h.create(this.bounds,this.tickSpacing),s=!0),s){for(var d=0;d<3;++d)r[d].sort(function(t,e){return t.x-e.x});h.equal(r,this.ticks)?s=!1:this.ticks=r}i("tickEnable"),o("tickFont")&&(s=!0),n("tickSize"),n("tickAngle"),n("tickPad"),a("tickColor");var g=o("labels");o("labelFont")&&(g=!0),i("labelEnable"),n("labelSize"),n("labelPad"),a("labelColor"),i("lineEnable"),i("lineMirror"),n("lineWidth"),a("lineColor"),i("lineTickEnable"),i("lineTickMirror"),n("lineTickLength"),n("lineTickWidth"),a("lineTickColor"),i("gridEnable"),n("gridWidth"),a("gridColor"),i("zeroEnable"),a("zeroLineColor"),n("zeroLineWidth"),i("backgroundEnable"),a("backgroundColor"),this._text?this._text&&(g||s)&&this._text.update(this.bounds,this.labels,this.labelFont,this.ticks,this.tickFont):this._text=l(this.gl,this.bounds,this.labels,this.labelFont,this.ticks,this.tickFont),this._lines&&s&&(this._lines.dispose(),this._lines=null),this._lines||(this._lines=u(this.gl,this.bounds,this.ticks))};var g=[new o,new o,new o],v=[0,0,0],m={model:d,view:d,projection:d};p.isOpaque=function(){return!0},p.isTransparent=function(){return!1},p.drawTransparent=function(t){};var y=[0,0,0],b=[0,0,0],x=[0,0,0];p.draw=function(t){t=t||m;for(var e=this.gl,r=t.model||d,i=t.view||d,o=t.projection||d,s=this.bounds,l=f(r,i,o,s),u=l.cubeEdges,c=l.axis,h=i[12],p=i[13],_=i[14],w=i[15],A=this.pixelRatio*(o[3]*h+o[7]*p+o[11]*_+o[15]*w)/e.drawingBufferHeight,M=0;M<3;++M)this.lastCubeProps.cubeEdges[M]=u[M],this.lastCubeProps.axis[M]=c[M];for(var k=g,M=0;M<3;++M)a(g[M],M,this.bounds,u,c);for(var e=this.gl,T=v,M=0;M<3;++M)this.backgroundEnable[M]?T[M]=c[M]:T[M]=0;this._background.draw(r,i,o,s,T,this.backgroundColor),this._lines.bind(r,i,o,this);for(var M=0;M<3;++M){var E=[0,0,0];c[M]>0?E[M]=s[1][M]:E[M]=s[0][M];for(var L=0;L<2;++L){var S=(M+1+L)%3,C=(M+1+(1^L))%3;this.gridEnable[S]&&this._lines.drawGrid(S,C,this.bounds,E,this.gridColor[S],this.gridWidth[S]*this.pixelRatio)}for(var L=0;L<2;++L){var S=(M+1+L)%3,C=(M+1+(1^L))%3;this.zeroEnable[C]&&s[0][C]<=0&&s[1][C]>=0&&this._lines.drawZero(S,C,this.bounds,E,this.zeroLineColor[C],this.zeroLineWidth[C]*this.pixelRatio)}}for(var M=0;M<3;++M){this.lineEnable[M]&&this._lines.drawAxisLine(M,this.bounds,k[M].primalOffset,this.lineColor[M],this.lineWidth[M]*this.pixelRatio),this.lineMirror[M]&&this._lines.drawAxisLine(M,this.bounds,k[M].mirrorOffset,this.lineColor[M],this.lineWidth[M]*this.pixelRatio);for(var R=n(y,k[M].primalMinor),P=n(b,k[M].mirrorMinor),N=this.lineTickLength,L=0;L<3;++L){var z=A/r[5*L];R[L]*=N[L]*z,P[L]*=N[L]*z}this.lineTickEnable[M]&&this._lines.drawAxisTicks(M,k[M].primalOffset,R,this.lineTickColor[M],this.lineTickWidth[M]*this.pixelRatio),this.lineTickMirror[M]&&this._lines.drawAxisTicks(M,k[M].mirrorOffset,P,this.lineTickColor[M],this.lineTickWidth[M]*this.pixelRatio)}this._text.bind(r,i,o,this.pixelRatio);for(var M=0;M<3;++M){for(var I=k[M].primalMinor,O=n(x,k[M].primalOffset),L=0;L<3;++L)this.lineTickEnable[M]&&(O[L]+=A*I[L]*Math.max(this.lineTickLength[L],0)/r[5*L]);if(this.tickEnable[M]){for(var L=0;L<3;++L)O[L]+=A*I[L]*this.tickPad[L]/r[5*L];this._text.drawTicks(M,this.tickSize[M],this.tickAngle[M],O,this.tickColor[M])}if(this.labelEnable[M]){for(var L=0;L<3;++L)O[L]+=A*I[L]*this.labelPad[L]/r[5*L];O[M]+=.5*(s[0][M]+s[1][M]),this._text.drawLabel(M,this.labelSize[M],this.labelAngle[M],O,this.labelColor[M])}}},p.dispose=function(){this._text.dispose(),this._lines.dispose(),this._background.dispose(),this._lines=null,this._text=null,this._background=null,this.gl=null}},{"./lib/background.js":87,"./lib/cube.js":88,"./lib/lines.js":89,"./lib/text.js":91,"./lib/ticks.js":92}],87:[function(t,e,r){"use strict";function n(t,e,r,n){this.gl=t,this.buffer=e,this.vao=r,this.shader=n}function i(t){for(var e=[],r=[],i=0,l=0;l<3;++l)for(var u=(l+1)%3,c=(l+2)%3,f=[0,0,0],h=[0,0,0],d=-1;d<=1;d+=2){r.push(i,i+2,i+1,i+1,i+2,i+3),f[l]=d,h[l]=d;for(var p=-1;p<=1;p+=2){f[u]=p;for(var g=-1;g<=1;g+=2)f[c]=g,e.push(f[0],f[1],f[2],h[0],h[1],h[2]),i+=1}var v=u;u=c,c=v}var m=o(t,new 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e=0;e<g.length;++e)if(t=l.positive(t,g[e]),t.length<3)return 0;for(var r=t[0],n=r[0]/r[3],i=r[1]/r[3],o=0,e=1;e+1<t.length;++e){var a=t[e],s=t[e+1],u=a[0]/a[3],c=a[1]/a[3],f=s[0]/s[3],h=s[1]/s[3],d=u-n,p=c-i,v=f-n,m=h-i;o+=Math.abs(d*m-p*v)}return o}function o(t,e,r,o){s(c,e,t),s(c,r,c);for(var l=0,g=0;g<2;++g){d[2]=o[g][2];for(var b=0;b<2;++b){d[1]=o[b][1];for(var x=0;x<2;++x)d[0]=o[x][0],n(f[l],d,c),l+=1}}for(var _=-1,g=0;g<8;++g){for(var w=f[g][3],A=0;A<3;++A)h[g][A]=f[g][A]/w;w<0&&(_<0?_=g:h[g][2]<h[_][2]&&(_=g))}if(_<0){_=0;for(var M=0;M<3;++M){for(var k=(M+2)%3,T=(M+1)%3,E=-1,L=-1,S=0;S<2;++S){var C=S<<M,R=C+(S<<k)+(1-S<<T),P=C+(1-S<<k)+(S<<T);u(h[C],h[R],h[P],p)<0||(S?E=1:L=1)}if(E<0||L<0)L>E&&(_|=1<<M);else{for(var S=0;S<2;++S){var C=S<<M,R=C+(S<<k)+(1-S<<T),P=C+(1-S<<k)+(S<<T),N=i([f[C],f[R],f[P],f[C+(1<<k)+(1<<T)]]);S?E=N:L=N}L>E&&(_|=1<<M)}}}for(var z=7^_,I=-1,g=0;g<8;++g)g!==_&&g!==z&&(I<0?I=g:h[I][1]>h[g][1]&&(I=g));for(var O=-1,g=0;g<3;++g){var 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s=t("gl-buffer"),l=t("gl-vao"),u=t("./shaders").line,c=[0,0,0],f=[0,0,0],h=[0,0,0],d=[0,0,0],p=[1,1],g=o.prototype;g.bind=function(t,e,r){this.shader.bind(),this.shader.uniforms.model=t,this.shader.uniforms.view=e,this.shader.uniforms.projection=r,p[0]=this.gl.drawingBufferWidth,p[1]=this.gl.drawingBufferHeight,this.shader.uniforms.screenShape=p,this.vao.bind()},g.drawAxisLine=function(t,e,r,o,a){var s=n(f);this.shader.uniforms.majorAxis=f,s[t]=e[1][t]-e[0][t],this.shader.uniforms.minorAxis=s;var l=i(d,r);l[t]+=e[0][t],this.shader.uniforms.offset=l,this.shader.uniforms.lineWidth=a,this.shader.uniforms.color=o;var u=n(h);u[(t+2)%3]=1,this.shader.uniforms.screenAxis=u,this.vao.draw(this.gl.TRIANGLES,6);var u=n(h);u[(t+1)%3]=1,this.shader.uniforms.screenAxis=u,this.vao.draw(this.gl.TRIANGLES,6)},g.drawAxisTicks=function(t,e,r,i,o){if(this.tickCount[t]){var a=n(c);a[t]=1,this.shader.uniforms.majorAxis=a,this.shader.uniforms.offset=e,this.shader.uniforms.minorAxis=r,this.shader.uniforms.color=i,this.shader.uniforms.lineWidth=o;var s=n(h);s[t]=1,this.shader.uniforms.screenAxis=s,this.vao.draw(this.gl.TRIANGLES,this.tickCount[t],this.tickOffset[t])}},g.drawGrid=function(t,e,r,o,a,s){if(this.gridCount[t]){var l=n(f);l[e]=r[1][e]-r[0][e],this.shader.uniforms.minorAxis=l;var u=i(d,o);u[e]+=r[0][e],this.shader.uniforms.offset=u;var p=n(c);p[t]=1,this.shader.uniforms.majorAxis=p;var g=n(h);g[t]=1,this.shader.uniforms.screenAxis=g,this.shader.uniforms.lineWidth=s,this.shader.uniforms.color=a,this.vao.draw(this.gl.TRIANGLES,this.gridCount[t],this.gridOffset[t])}},g.drawZero=function(t,e,r,o,a,s){var l=n(f);this.shader.uniforms.majorAxis=l,l[t]=r[1][t]-r[0][t],this.shader.uniforms.minorAxis=l;var u=i(d,o);u[t]+=r[0][t],this.shader.uniforms.offset=u;var c=n(h);c[e]=1,this.shader.uniforms.screenAxis=c,this.shader.uniforms.lineWidth=s,this.shader.uniforms.color=a,this.vao.draw(this.gl.TRIANGLES,6)},g.dispose=function(){this.vao.dispose(),this.vertBuffer.dispose(),this.shader.dispose()}},{"./shaders":90,"gl-buffer":94,"gl-vao":148}],90:[function(t,e,r){"use strict";var n=t("gl-shader"),i="#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, majorAxis, minorAxis, screenAxis;\nuniform float lineWidth;\nuniform vec2 screenShape;\n\nvec3 project(vec3 p) {\n  vec4 pp = projection * view * model * vec4(p, 1.0);\n  return pp.xyz / max(pp.w, 0.0001);\n}\n\nvoid main() {\n  vec3 major = position.x * majorAxis;\n  vec3 minor = position.y * minorAxis;\n\n  vec3 vPosition = major + minor + offset;\n  vec3 pPosition = project(vPosition);\n  vec3 offset = project(vPosition + screenAxis * position.z);\n\n  vec2 screen = normalize((offset - pPosition).xy * screenShape) / screenShape;\n\n  gl_Position = vec4(pPosition + vec3(0.5 * screen * lineWidth, 0), 1.0);\n}\n",o="precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}";
++r.line=function(t){return n(t,i,o,null,[{name:"position",type:"vec3"}])};var a="#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, axis;\nuniform float scale, angle, pixelScale;\nuniform vec2 resolution;\n\nvoid main() {  \n  //Compute plane offset\n  vec2 planeCoord = position.xy * pixelScale;\n  mat2 planeXform = scale * mat2(cos(angle), sin(angle),\n                                -sin(angle), cos(angle));\n  vec2 viewOffset = 2.0 * planeXform * planeCoord / resolution;\n\n  //Compute world offset\n  float axisDistance = position.z;\n  vec3 dataPosition = axisDistance * axis + offset;\n  vec4 worldPosition = model * vec4(dataPosition, 1);\n  \n  //Compute clip position\n  vec4 viewPosition = view * worldPosition;\n  vec4 clipPosition = projection * viewPosition;\n  clipPosition /= clipPosition.w;\n\n  //Apply text offset in clip coordinates\n  clipPosition += vec4(viewOffset, 0, 0);\n\n  //Done\n  gl_Position = clipPosition;\n}",s="precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}";r.text=function(t){return n(t,a,s,null,[{name:"position",type:"vec3"}])};var l="#define GLSLIFY 1\nattribute vec3 position;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection;\nuniform vec3 enable;\nuniform vec3 bounds[2];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  if(dot(normal, enable) > 0.0) {\n    vec3 nPosition = mix(bounds[0], bounds[1], 0.5 * (position + 1.0));\n    gl_Position = projection * view * model * vec4(nPosition, 1.0);\n  } else {\n    gl_Position = vec4(0,0,0,0);\n  }\n  colorChannel = abs(normal);\n}",u="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 colors[3];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  gl_FragColor = colorChannel.x * colors[0] + \n                 colorChannel.y * colors[1] +\n                 colorChannel.z * colors[2];\n}";r.bg=function(t){return 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i=this.shader.uniforms;i.model=t,i.view=e,i.projection=r,i.pixelScale=n,p[0]=this.gl.drawingBufferWidth,p[1]=this.gl.drawingBufferHeight,this.shader.uniforms.resolution=p},d.update=function(t,e,r,n,o){function a(t,e,r,n){var o=f[r];o||(o=f[r]={});var a=o[e];a||(a=o[e]=i(e,{triangles:!0,font:r,textAlign:"center",textBaseline:"middle"}));for(var l=(n||12)/12,u=a.positions,c=a.cells,h=0,d=c.length;h<d;++h)for(var p=c[h],g=2;g>=0;--g){var v=u[p[g]];s.push(l*v[0],-l*v[1],t)}}for(var s=(this.gl,[]),l=[0,0,0],u=[0,0,0],c=[0,0,0],d=[0,0,0],p=0;p<3;++p){c[p]=s.length/h|0,a(.5*(t[0][p]+t[1][p]),e[p],r),d[p]=(s.length/h|0)-c[p],l[p]=s.length/h|0;for(var g=0;g<n[p].length;++g)n[p][g].text&&a(n[p][g].x,n[p][g].text,n[p][g].font||o,n[p][g].fontSize||12);u[p]=(s.length/h|0)-l[p]}this.buffer.update(s),this.tickOffset=l,this.tickCount=u,this.labelOffset=c,this.labelCount=d};var g=[0,0,0];d.drawTicks=function(t,e,r,n,i){if(this.tickCount[t]){var o=g;o[0]=o[1]=o[2]=0,o[t]=1,this.shader.uniforms.axis=o,this.shader.uniforms.color=i,this.shader.uniforms.angle=r,this.shader.uniforms.scale=e,this.shader.uniforms.offset=n,this.vao.draw(this.gl.TRIANGLES,this.tickCount[t],this.tickOffset[t])}};var v=[0,0,0];d.drawLabel=function(t,e,r,n,i){this.labelCount[t]&&(this.shader.uniforms.axis=v,this.shader.uniforms.color=i,this.shader.uniforms.angle=r,this.shader.uniforms.scale=e,this.shader.uniforms.offset=n,this.vao.draw(this.gl.TRIANGLES,this.labelCount[t],this.labelOffset[t]))},d.dispose=function(){this.shader.dispose(),this.vao.dispose(),this.buffer.dispose()}}).call(this,t("_process"))},{"./shaders":90,_process:205,"gl-buffer":94,"gl-vao":148,"vectorize-text":249}],92:[function(t,e,r){"use strict";function n(t,e){var r=t+"",n=r.indexOf("."),i=0;n>=0&&(i=r.length-n-1);var o=Math.pow(10,i),a=Math.round(t*e*o),s=a+"";if(s.indexOf("e")>=0)return s;var l=a/o,u=a%o;a<0?(l=0|-Math.ceil(l),u=0|-u):(l=0|Math.floor(l),u=0|u);var c=""+l;if(a<0&&(c="-"+c),i){for(var f=""+u;f.length<i;)f="0"+f;return c+"."+f}return c}function i(t,e){for(var r=[],i=0;i<3;++i){for(var o=[],a=(.5*(t[0][i]+t[1][i]),0);a*e[i]<=t[1][i];++a)o.push({x:a*e[i],text:n(e[i],a)});for(var a=-1;a*e[i]>=t[0][i];--a)o.push({x:a*e[i],text:n(e[i],a)});r.push(o)}return r}function o(t,e){for(var r=0;r<3;++r){if(t[r].length!==e[r].length)return!1;for(var n=0;n<t[r].length;++n){var i=t[r][n],o=e[r][n];if(i.x!==o.x||i.text!==o.text)return!1}}return!0}r.create=i,r.equal=o},{}],93:[function(t,e,r){"use strict";function n(t,e,r){this.lo=t,this.hi=e,this.pixelsPerDataUnit=r}function i(t,e,r,n,i){for(var o=0;o<3;++o){for(var a=p,s=g,l=0;l<3;++l)s[l]=a[l]=r[l];s[3]=a[3]=1,s[o]+=1,f(s,s,e),s[3]<0&&(t[o]=1/0),a[o]-=1,f(a,a,e),a[3]<0&&(t[o]=1/0);var u=(a[0]/a[3]-s[0]/s[3])*n,c=(a[1]/a[3]-s[1]/s[3])*i;t[o]=.25*Math.sqrt(u*u+c*c)}return t}function o(t,e,r,n,o){var f=e.model||h,p=e.view||h,g=e.projection||h,y=t.bounds,o=o||l(f,p,g,y),b=o.axis;o.edges;u(d,p,f),u(d,g,d);for(var x=v,_=0;_<3;++_)x[_].lo=1/0,x[_].hi=-(1/0),x[_].pixelsPerDataUnit=1/0;var w=a(c(d,d));c(d,d);for(var A=0;A<3;++A){var M=(A+1)%3,k=(A+2)%3,T=m;t:for(var _=0;_<2;++_){var E=[];if(b[A]<0!=!!_){T[A]=y[_][A];for(var L=0;L<2;++L){T[M]=y[L^_][M];for(var S=0;S<2;++S)T[k]=y[S^L^_][k],E.push(T.slice())}for(var L=0;L<w.length;++L){if(0===E.length)continue t;E=s.positive(E,w[L])}for(var L=0;L<E.length;++L)for(var k=E[L],C=i(m,d,k,r,n),S=0;S<3;++S)x[S].lo=Math.min(x[S].lo,k[S]),x[S].hi=Math.max(x[S].hi,k[S]),S!==A&&(x[S].pixelsPerDataUnit=Math.min(x[S].pixelsPerDataUnit,Math.abs(C[S])))}}}return x}e.exports=o;var a=t("extract-frustum-planes"),s=t("split-polygon"),l=t("./lib/cube.js"),u=t("gl-mat4/multiply"),c=t("gl-mat4/transpose"),f=t("gl-vec4/transformMat4"),h=new Float32Array([1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]),d=new Float32Array(16),p=[0,0,0,1],g=[0,0,0,1],v=[new n(1/0,-(1/0),1/0),new n(1/0,-(1/0),1/0),new n(1/0,-(1/0),1/0)],m=[0,0,0]},{"./lib/cube.js":88,"extract-frustum-planes":81,"gl-mat4/multiply":113,"gl-mat4/transpose":121,"gl-vec4/transformMat4":154,"split-polygon":236}],94:[function(t,e,r){"use strict";function n(t,e,r,n,i){this.gl=t,this.type=e,this.handle=r,this.length=n,this.usage=i}function i(t,e,r,n,i,o){var a=i.length*i.BYTES_PER_ELEMENT;if(o<0)return t.bufferData(e,i,n),a;if(a+o>r)throw new Error("gl-buffer: If resizing buffer, must not specify offset");return t.bufferSubData(e,o,i),r}function o(t,e){for(var r=l.malloc(t.length,e),n=t.length,i=0;i<n;++i)r[i]=t[i];return r}function a(t,e){for(var r=1,n=e.length-1;n>=0;--n){if(e[n]!==r)return!1;r*=t[n]}return!0}function s(t,e,r,i){if(r=r||t.ARRAY_BUFFER,i=i||t.DYNAMIC_DRAW,r!==t.ARRAY_BUFFER&&r!==t.ELEMENT_ARRAY_BUFFER)throw new Error("gl-buffer: Invalid type for webgl buffer, must be either gl.ARRAY_BUFFER or gl.ELEMENT_ARRAY_BUFFER");if(i!==t.DYNAMIC_DRAW&&i!==t.STATIC_DRAW&&i!==t.STREAM_DRAW)throw new Error("gl-buffer: Invalid usage for buffer, must be either gl.DYNAMIC_DRAW, gl.STATIC_DRAW or gl.STREAM_DRAW");var o=t.createBuffer(),a=new n(t,r,o,0,i);return a.update(e),a}var l=t("typedarray-pool"),u=t("ndarray-ops"),c=t("ndarray"),f=["uint8","uint8_clamped","uint16","uint32","int8","int16","int32","float32"],h=n.prototype;h.bind=function(){this.gl.bindBuffer(this.type,this.handle)},h.unbind=function(){this.gl.bindBuffer(this.type,null)},h.dispose=function(){this.gl.deleteBuffer(this.handle)},h.update=function(t,e){if("number"!=typeof e&&(e=-1),this.bind(),"object"==typeof t&&"undefined"!=typeof t.shape){var r=t.dtype;if(f.indexOf(r)<0&&(r="float32"),this.type===this.gl.ELEMENT_ARRAY_BUFFER){var n=gl.getExtension("OES_element_index_uint");r=n&&"uint16"!==r?"uint32":"uint16"}if(r===t.dtype&&a(t.shape,t.stride))0===t.offset&&t.data.length===t.shape[0]?this.length=i(this.gl,this.type,this.length,this.usage,t.data,e):this.length=i(this.gl,this.type,this.length,this.usage,t.data.subarray(t.offset,t.shape[0]),e);else{var s=l.malloc(t.size,r),h=c(s,t.shape);u.assign(h,t),e<0?this.length=i(this.gl,this.type,this.length,this.usage,s,e):this.length=i(this.gl,this.type,this.length,this.usage,s.subarray(0,t.size),e),l.free(s)}}else if(Array.isArray(t)){var d;d=this.type===this.gl.ELEMENT_ARRAY_BUFFER?o(t,"uint16"):o(t,"float32"),e<0?this.length=i(this.gl,this.type,this.length,this.usage,d,e):this.length=i(this.gl,this.type,this.length,this.usage,d.subarray(0,t.length),e),l.free(d)}else if("object"==typeof t&&"number"==typeof t.length)this.length=i(this.gl,this.type,this.length,this.usage,t,e);else{if("number"!=typeof t&&void 0!==t)throw new Error("gl-buffer: Invalid data type");if(e>=0)throw new Error("gl-buffer: Cannot specify offset when resizing buffer");t=0|t,t<=0&&(t=1),this.gl.bufferData(this.type,0|t,this.usage),this.length=t}},e.exports=s},{ndarray:191,"ndarray-ops":185,"typedarray-pool":246}],95:[function(t,e,r){e.exports={0:"NONE",1:"ONE",2:"LINE_LOOP",3:"LINE_STRIP",4:"TRIANGLES",5:"TRIANGLE_STRIP",6:"TRIANGLE_FAN",256:"DEPTH_BUFFER_BIT",512:"NEVER",513:"LESS",514:"EQUAL",515:"LEQUAL",516:"GREATER",517:"NOTEQUAL",518:"GEQUAL",519:"ALWAYS",768:"SRC_COLOR",769:"ONE_MINUS_SRC_COLOR",770:"SRC_ALPHA",771:"ONE_MINUS_SRC_ALPHA",772:"DST_ALPHA",773:"ONE_MINUS_DST_ALPHA",774:"DST_COLOR",775:"ONE_MINUS_DST_COLOR",776:"SRC_ALPHA_SATURATE",1024:"STENCIL_BUFFER_BIT",1028:"FRONT",1029:"BACK",1032:"FRONT_AND_BACK",1280:"INVALID_ENUM",1281:"INVALID_VALUE",1282:"INVALID_OPERATION",1285:"OUT_OF_MEMORY",1286:"INVALID_FRAMEBUFFER_OPERATION",2304:"CW",2305:"CCW",2849:"LINE_WIDTH",2884:"CULL_FACE",2885:"CULL_FACE_MODE",2886:"FRONT_FACE",2928:"DEPTH_RANGE",2929:"DEPTH_TEST",2930:"DEPTH_WRITEMASK",2931:"DEPTH_CLEAR_VALUE",2932:"DEPTH_FUNC",2960:"STENCIL_TEST",2961:"STENCIL_CLEAR_VALUE",2962:"STENCIL_FUNC",2963:"STENCIL_VALUE_MASK",2964:"STENCIL_FAIL",2965:"STENCIL_PASS_DEPTH_FAIL",2966:"STENCIL_PASS_DEPTH_PASS",2967:"STENCIL_REF",2968:"STENCIL_WRITEMASK",2978:"VIEWPORT",3024:"DITHER",3042:"BLEND",3088:"SCISSOR_BOX",3089:"SCISSOR_TEST",3106:"COLOR_CLEAR_VALUE",3107:"COLOR_WRITEMASK",3317:"UNPACK_ALIGNMENT",3333:"PACK_ALIGNMENT",3379:"MAX_TEXTURE_SIZE",3386:"MAX_VIEWPORT_DIMS",3408:"SUBPIXEL_BITS",3410:"RED_BITS",3411:"GREEN_BITS",3412:"BLUE_BITS",3413:"ALPHA_BITS",3414:"DEPTH_BITS",3415:"STENCIL_BITS",3553:"TEXTURE_2D",4352:"DONT_CARE",4353:"FASTEST",4354:"NICEST",5120:"BYTE",5121:"UNSIGNED_BYTE",5122:"SHORT",5123:"UNSIGNED_SHORT",5124:"INT",5125:"UNSIGNED_INT",5126:"FLOAT",5386:"INVERT",5890:"TEXTURE",6401:"STENCIL_INDEX",6402:"DEPTH_COMPONENT",6406:"ALPHA",6407:"RGB",6408:"RGBA",6409:"LUMINANCE",6410:"LUMINANCE_ALPHA",7680:"KEEP",7681:"REPLACE",7682:"INCR",7683:"DECR",7936:"VENDOR",7937:"RENDERER",7938:"VERSION",9728:"NEAREST",9729:"LINEAR",9984:"NEAREST_MIPMAP_NEAREST",9985:"LINEAR_MIPMAP_NEAREST",9986:"NEAREST_MIPMAP_LINEAR",9987:"LINEAR_MIPMAP_LINEAR",10240:"TEXTURE_MAG_FILTER",10241:"TEXTURE_MIN_FILTER",10242:"TEXTURE_WRAP_S",10243:"TEXTURE_WRAP_T",10497:"REPEAT",10752:"POLYGON_OFFSET_UNITS",16384:"COLOR_BUFFER_BIT",32769:"CONSTANT_COLOR",32770:"ONE_MINUS_CONSTANT_COLOR",32771:"CONSTANT_ALPHA",32772:"ONE_MINUS_CONSTANT_ALPHA",32773:"BLEND_COLOR",32774:"FUNC_ADD",32777:"BLEND_EQUATION_RGB",32778:"FUNC_SUBTRACT",32779:"FUNC_REVERSE_SUBTRACT",32819:"UNSIGNED_SHORT_4_4_4_4",32820:"UNSIGNED_SHORT_5_5_5_1",32823:"POLYGON_OFFSET_FILL",32824:"POLYGON_OFFSET_FACTOR",32854:"RGBA4",32855:"RGB5_A1",32873:"TEXTURE_BINDING_2D",32926:"SAMPLE_ALPHA_TO_COVERAGE",32928:"SAMPLE_COVERAGE",32936:"SAMPLE_BUFFERS",32937:"SAMPLES",32938:"SAMPLE_COVERAGE_VALUE",32939:"SAMPLE_COVERAGE_INVERT",32968:"BLEND_DST_RGB",32969:"BLEND_SRC_RGB",32970:"BLEND_DST_ALPHA",32971:"BLEND_SRC_ALPHA",33071:"CLAMP_TO_EDGE",33170:"GENERATE_MIPMAP_HINT",33189:"DEPTH_COMPONENT16",33306:"DEPTH_STENCIL_ATTACHMENT",33635:"UNSIGNED_SHORT_5_6_5",33648:"MIRRORED_REPEAT",33901:"ALIASED_POINT_SIZE_RANGE",33902:"ALIASED_LINE_WIDTH_RANGE",33984:"TEXTURE0",33985:"TEXTURE1",33986:"TEXTURE2",33987:"TEXTURE3",33988:"TEXTURE4",33989:"TEXTURE5",33990:"TEXTURE6",33991:"TEXTURE7",33992:"TEXTURE8",33993:"TEXTURE9",33994:"TEXTURE10",33995:"TEXTURE11",33996:"TEXTURE12",33997:"TEXTURE13",33998:"TEXTURE14",33999:"TEXTURE15",34e3:"TEXTURE16",34001:"TEXTURE17",34002:"TEXTURE18",34003:"TEXTURE19",34004:"TEXTURE20",34005:"TEXTURE21",34006:"TEXTURE22",34007:"TEXTURE23",34008:"TEXTURE24",34009:"TEXTURE25",34010:"TEXTURE26",34011:"TEXTURE27",34012:"TEXTURE28",34013:"TEXTURE29",34014:"TEXTURE30",34015:"TEXTURE31",34016:"ACTIVE_TEXTURE",34024:"MAX_RENDERBUFFER_SIZE",34041:"DEPTH_STENCIL",34055:"INCR_WRAP",34056:"DECR_WRAP",34067:"TEXTURE_CUBE_MAP",34068:"TEXTURE_BINDING_CUBE_MAP",34069:"TEXTURE_CUBE_MAP_POSITIVE_X",34070:"TEXTURE_CUBE_MAP_NEGATIVE_X",34071:"TEXTURE_CUBE_MAP_POSITIVE_Y",34072:"TEXTURE_CUBE_MAP_NEGATIVE_Y",34073:"TEXTURE_CUBE_MAP_POSITIVE_Z",34074:"TEXTURE_CUBE_MAP_NEGATIVE_Z",34076:"MAX_CUBE_MAP_TEXTURE_SIZE",34338:"VERTEX_ATTRIB_ARRAY_ENABLED",34339:"VERTEX_ATTRIB_ARRAY_SIZE",34340:"VERTEX_ATTRIB_ARRAY_STRIDE",34341:"VERTEX_ATTRIB_ARRAY_TYPE",34342:"CURRENT_VERTEX_ATTRIB",34373:"VERTEX_ATTRIB_ARRAY_POINTER",34466:"NUM_COMPRESSED_TEXTURE_FORMATS",34467:"COMPRESSED_TEXTURE_FORMATS",34660:"BUFFER_SIZE",34661:"BUFFER_USAGE",34816:"STENCIL_BACK_FUNC",34817:"STENCIL_BACK_FAIL",34818:"STENCIL_BACK_PASS_DEPTH_FAIL",34819:"STENCIL_BACK_PASS_DEPTH_PASS",34877:"BLEND_EQUATION_ALPHA",34921:"MAX_VERTEX_ATTRIBS",34922:"VERTEX_ATTRIB_ARRAY_NORMALIZED",34930:"MAX_TEXTURE_IMAGE_UNITS",34962:"ARRAY_BUFFER",34963:"ELEMENT_ARRAY_BUFFER",34964:"ARRAY_BUFFER_BINDING",34965:"ELEMENT_ARRAY_BUFFER_BINDING",34975:"VERTEX_ATTRIB_ARRAY_BUFFER_BINDING",35040:"STREAM_DRAW",35044:"STATIC_DRAW",35048:"DYNAMIC_DRAW",35632:"FRAGMENT_SHADER",35633:"VERTEX_SHADER",35660:"MAX_VERTEX_TEXTURE_IMAGE_UNITS",35661:"MAX_COMBINED_TEXTURE_IMAGE_UNITS",35663:"SHADER_TYPE",35664:"FLOAT_VEC2",35665:"FLOAT_VEC3",35666:"FLOAT_VEC4",35667:"INT_VEC2",35668:"INT_VEC3",35669:"INT_VEC4",35670:"BOOL",35671:"BOOL_VEC2",35672:"BOOL_VEC3",35673:"BOOL_VEC4",35674:"FLOAT_MAT2",35675:"FLOAT_MAT3",35676:"FLOAT_MAT4",35678:"SAMPLER_2D",35680:"SAMPLER_CUBE",35712:"DELETE_STATUS",35713:"COMPILE_STATUS",35714:"LINK_STATUS",35715:"VALIDATE_STATUS",35716:"INFO_LOG_LENGTH",35717:"ATTACHED_SHADERS",35718:"ACTIVE_UNIFORMS",35719:"ACTIVE_UNIFORM_MAX_LENGTH",35720:"SHADER_SOURCE_LENGTH",35721:"ACTIVE_ATTRIBUTES",35722:"ACTIVE_ATTRIBUTE_MAX_LENGTH",35724:"SHADING_LANGUAGE_VERSION",35725:"CURRENT_PROGRAM",36003:"STENCIL_BACK_REF",36004:"STENCIL_BACK_VALUE_MASK",36005:"STENCIL_BACK_WRITEMASK",36006:"FRAMEBUFFER_BINDING",36007:"RENDERBUFFER_BINDING",36048:"FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE",36049:"FRAMEBUFFER_ATTACHMENT_OBJECT_NAME",36050:"FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL",36051:"FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE",36053:"FRAMEBUFFER_COMPLETE",36054:"FRAMEBUFFER_INCOMPLETE_ATTACHMENT",36055:"FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT",36057:"FRAMEBUFFER_INCOMPLETE_DIMENSIONS",36061:"FRAMEBUFFER_UNSUPPORTED",36064:"COLOR_ATTACHMENT0",36096:"DEPTH_ATTACHMENT",36128:"STENCIL_ATTACHMENT",36160:"FRAMEBUFFER",36161:"RENDERBUFFER",36162:"RENDERBUFFER_WIDTH",36163:"RENDERBUFFER_HEIGHT",36164:"RENDERBUFFER_INTERNAL_FORMAT",36168:"STENCIL_INDEX8",36176:"RENDERBUFFER_RED_SIZE",36177:"RENDERBUFFER_GREEN_SIZE",36178:"RENDERBUFFER_BLUE_SIZE",36179:"RENDERBUFFER_ALPHA_SIZE",36180:"RENDERBUFFER_DEPTH_SIZE",36181:"RENDERBUFFER_STENCIL_SIZE",36194:"RGB565",36336:"LOW_FLOAT",36337:"MEDIUM_FLOAT",36338:"HIGH_FLOAT",36339:"LOW_INT",36340:"MEDIUM_INT",36341:"HIGH_INT",36346:"SHADER_COMPILER",36347:"MAX_VERTEX_UNIFORM_VECTORS",36348:"MAX_VARYING_VECTORS",36349:"MAX_FRAGMENT_UNIFORM_VECTORS",37440:"UNPACK_FLIP_Y_WEBGL",37441:"UNPACK_PREMULTIPLY_ALPHA_WEBGL",37442:"CONTEXT_LOST_WEBGL",37443:"UNPACK_COLORSPACE_CONVERSION_WEBGL",37444:"BROWSER_DEFAULT_WEBGL"}},{}],96:[function(t,e,r){var n=t("./1.0/numbers");e.exports=function(t){return n[t]}},{"./1.0/numbers":95}],97:[function(t,e,r){"use strict";function n(t,e,r,n){this.gl=t,this.shader=n,this.buffer=e,this.vao=r,this.pixelRatio=1,this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.lineWidth=[1,1,1],this.capSize=[10,10,10],this.lineCount=[0,0,0],this.lineOffset=[0,0,0],this.opacity=1}function i(t,e){for(var r=0;r<3;++r)t[0][r]=Math.min(t[0][r],e[r]),t[1][r]=Math.max(t[1][r],e[r])}function o(t,e,r,n){for(var i=h[n],o=0;o<i.length;++o){var a=i[o];t.push(e[0],e[1],e[2],r[0],r[1],r[2],r[3],a[0],a[1],a[2])}return i.length}function a(t){var e=t.gl,r=s(e),i=l(e,[{buffer:r,type:e.FLOAT,size:3,offset:0,stride:40},{buffer:r,type:e.FLOAT,size:4,offset:12,stride:40},{buffer:r,type:e.FLOAT,size:3,offset:28,stride:40}]),o=u(e);o.attributes.position.location=0,o.attributes.color.location=1,o.attributes.offset.location=2;var a=new n(e,r,i,o);return a.update(t),a}e.exports=a;var s=t("gl-buffer"),l=t("gl-vao"),u=t("./shaders/index"),c=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],f=n.prototype;f.isOpaque=function(){return this.opacity>=1},f.isTransparent=function(){return this.opacity<1},f.drawTransparent=f.draw=function(t){var e=this.gl,r=this.shader.uniforms;this.shader.bind();var n=r.view=t.view||c,i=r.projection=t.projection||c;r.model=t.model||c,r.clipBounds=this.clipBounds,r.opacity=this.opacity;var o=n[12],a=n[13],s=n[14],l=n[15],u=this.pixelRatio*(i[3]*o+i[7]*a+i[11]*s+i[15]*l)/e.drawingBufferHeight;this.vao.bind();for(var f=0;f<3;++f)e.lineWidth(this.lineWidth[f]),r.capSize=this.capSize[f]*u,e.drawArrays(e.LINES,this.lineOffset[f],this.lineCount[f]);this.vao.unbind()};var h=function(){for(var t=new Array(3),e=0;e<3;++e){for(var r=[],n=1;n<=2;++n)for(var i=-1;i<=1;i+=2){var o=(n+e)%3,a=[0,0,0];a[o]=i,r.push(a)}t[e]=r}return t}();f.update=function(t){t=t||{},"lineWidth"in t&&(this.lineWidth=t.lineWidth,Array.isArray(this.lineWidth)||(this.lineWidth=[this.lineWidth,this.lineWidth,this.lineWidth])),"capSize"in t&&(this.capSize=t.capSize,Array.isArray(this.capSize)||(this.capSize=[this.capSize,this.capSize,this.capSize])),"opacity"in t&&(this.opacity=t.opacity);var e=t.color||[[0,0,0],[0,0,0],[0,0,0]],r=t.position,n=t.error;if(Array.isArray(e[0])||(e=[e,e,e]),r&&n){var a=[],s=r.length,l=0;this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.lineCount=[0,0,0];for(var u=0;u<3;++u){this.lineOffset[u]=l;t:for(var c=0;c<s;++c){for(var f=r[c],h=0;h<3;++h)if(isNaN(f[h])||!isFinite(f[h]))continue t;var d=n[c],p=e[u];if(Array.isArray(p[0])&&(p=e[c]),3===p.length&&(p=[p[0],p[1],p[2],1]),!isNaN(d[0][u])&&!isNaN(d[1][u])){if(d[0][u]<0){var g=f.slice();g[u]+=d[0][u],a.push(f[0],f[1],f[2],p[0],p[1],p[2],p[3],0,0,0,g[0],g[1],g[2],p[0],p[1],p[2],p[3],0,0,0),i(this.bounds,g),l+=2+o(a,g,p,u)}if(d[1][u]>0){var g=f.slice();g[u]+=d[1][u],a.push(f[0],f[1],f[2],p[0],p[1],p[2],p[3],0,0,0,g[0],g[1],g[2],p[0],p[1],p[2],p[3],0,0,0),i(this.bounds,g),l+=2+o(a,g,p,u)}}}this.lineCount[u]=l-this.lineOffset[u]}this.buffer.update(a)}},f.dispose=function(){this.shader.dispose(),this.buffer.dispose(),this.vao.dispose()}},{"./shaders/index":98,"gl-buffer":94,"gl-vao":148}],98:[function(t,e,r){"use strict";var n=t("gl-shader"),i="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, offset;\nattribute vec4 color;\nuniform mat4 model, view, projection;\nuniform float capSize;\nvarying vec4 fragColor;\nvarying vec3 fragPosition;\n\nvoid main() {\n  vec4 worldPosition  = model * vec4(position, 1.0);\n  worldPosition       = (worldPosition / worldPosition.w) + vec4(capSize * offset, 0.0);\n  gl_Position         = projection * view * worldPosition;\n  fragColor           = color;\n  fragPosition        = position;\n}",o="precision mediump float;\n#define GLSLIFY 1\nuniform vec3 clipBounds[2];\nuniform float opacity;\nvarying vec3 fragPosition;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(fragPosition, clipBounds[0])) || any(greaterThan(fragPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = opacity * fragColor;\n}";e.exports=function(t){return n(t,i,o,null,[{name:"position",type:"vec3"},{name:"offset",type:"vec3"},{name:"color",type:"vec4"}])}},{"gl-shader":133}],99:[function(t,e,r){"use strict";function n(t){var e=t.getParameter(t.FRAMEBUFFER_BINDING),r=t.getParameter(t.RENDERBUFFER_BINDING),n=t.getParameter(t.TEXTURE_BINDING_2D);return[e,r,n]}function i(t,e){t.bindFramebuffer(t.FRAMEBUFFER,e[0]),t.bindRenderbuffer(t.RENDERBUFFER,e[1]),t.bindTexture(t.TEXTURE_2D,e[2])}function o(t,e){var r=t.getParameter(e.MAX_COLOR_ATTACHMENTS_WEBGL);y=new Array(r+1);for(var n=0;n<=r;++n){for(var i=new Array(r),o=0;o<n;++o)i[o]=t.COLOR_ATTACHMENT0+o;for(var o=n;o<r;++o)i[o]=t.NONE;y[n]=i}}function a(t){switch(t){case p:throw new Error("gl-fbo: Framebuffer unsupported");case g:throw new Error("gl-fbo: Framebuffer incomplete attachment");case v:throw new Error("gl-fbo: Framebuffer incomplete dimensions");case m:throw new Error("gl-fbo: Framebuffer incomplete missing attachment");default:throw new Error("gl-fbo: Framebuffer failed for unspecified reason")}}function s(t,e,r,n,i,o){if(!n)return null;var a=d(t,e,r,i,n);return a.magFilter=t.NEAREST,a.minFilter=t.NEAREST,a.mipSamples=1,a.bind(),t.framebufferTexture2D(t.FRAMEBUFFER,o,t.TEXTURE_2D,a.handle,0),a}function l(t,e,r,n,i){var o=t.createRenderbuffer();return t.bindRenderbuffer(t.RENDERBUFFER,o),t.renderbufferStorage(t.RENDERBUFFER,n,e,r),t.framebufferRenderbuffer(t.FRAMEBUFFER,i,t.RENDERBUFFER,o),o}function u(t){var e=n(t.gl),r=t.gl,o=t.handle=r.createFramebuffer(),u=t._shape[0],c=t._shape[1],f=t.color.length,h=t._ext,d=t._useStencil,p=t._useDepth,g=t._colorType;r.bindFramebuffer(r.FRAMEBUFFER,o);for(var v=0;v<f;++v)t.color[v]=s(r,u,c,g,r.RGBA,r.COLOR_ATTACHMENT0+v);0===f?(t._color_rb=l(r,u,c,r.RGBA4,r.COLOR_ATTACHMENT0),h&&h.drawBuffersWEBGL(y[0])):f>1&&h.drawBuffersWEBGL(y[f]);var m=r.getExtension("WEBGL_depth_texture");m?d?t.depth=s(r,u,c,m.UNSIGNED_INT_24_8_WEBGL,r.DEPTH_STENCIL,r.DEPTH_STENCIL_ATTACHMENT):p&&(t.depth=s(r,u,c,r.UNSIGNED_SHORT,r.DEPTH_COMPONENT,r.DEPTH_ATTACHMENT)):p&&d?t._depth_rb=l(r,u,c,r.DEPTH_STENCIL,r.DEPTH_STENCIL_ATTACHMENT):p?t._depth_rb=l(r,u,c,r.DEPTH_COMPONENT16,r.DEPTH_ATTACHMENT):d&&(t._depth_rb=l(r,u,c,r.STENCIL_INDEX,r.STENCIL_ATTACHMENT));var b=r.checkFramebufferStatus(r.FRAMEBUFFER);if(b!==r.FRAMEBUFFER_COMPLETE){t._destroyed=!0,r.bindFramebuffer(r.FRAMEBUFFER,null),r.deleteFramebuffer(t.handle),t.handle=null,t.depth&&(t.depth.dispose(),t.depth=null),t._depth_rb&&(r.deleteRenderbuffer(t._depth_rb),t._depth_rb=null);for(var v=0;v<t.color.length;++v)t.color[v].dispose(),t.color[v]=null;t._color_rb&&(r.deleteRenderbuffer(t._color_rb),t._color_rb=null),i(r,e),a(b)}i(r,e)}function c(t,e,r,n,i,o,a,s){this.gl=t,this._shape=[0|e,0|r],this._destroyed=!1,this._ext=s,this.color=new Array(i);for(var l=0;l<i;++l)this.color[l]=null;this._color_rb=null,this.depth=null,this._depth_rb=null,this._colorType=n,this._useDepth=o,this._useStencil=a;var c=this,f=[0|e,0|r];Object.defineProperties(f,{0:{get:function(){return c._shape[0]},set:function(t){return c.width=t}},1:{get:function(){return c._shape[1]},set:function(t){return c.height=t}}}),this._shapeVector=f,u(this)}function f(t,e,r){if(t._destroyed)throw new Error("gl-fbo: Can't resize destroyed FBO");if(t._shape[0]!==e||t._shape[1]!==r){var o=t.gl,s=o.getParameter(o.MAX_RENDERBUFFER_SIZE);if(e<0||e>s||r<0||r>s)throw new Error("gl-fbo: Can't resize FBO, invalid dimensions");t._shape[0]=e,t._shape[1]=r;for(var l=n(o),u=0;u<t.color.length;++u)t.color[u].shape=t._shape;t._color_rb&&(o.bindRenderbuffer(o.RENDERBUFFER,t._color_rb),o.renderbufferStorage(o.RENDERBUFFER,o.RGBA4,t._shape[0],t._shape[1])),t.depth&&(t.depth.shape=t._shape),t._depth_rb&&(o.bindRenderbuffer(o.RENDERBUFFER,t._depth_rb),t._useDepth&&t._useStencil?o.renderbufferStorage(o.RENDERBUFFER,o.DEPTH_STENCIL,t._shape[0],t._shape[1]):t._useDepth?o.renderbufferStorage(o.RENDERBUFFER,o.DEPTH_COMPONENT16,t._shape[0],t._shape[1]):t._useStencil&&o.renderbufferStorage(o.RENDERBUFFER,o.STENCIL_INDEX,t._shape[0],t._shape[1])),o.bindFramebuffer(o.FRAMEBUFFER,t.handle);var c=o.checkFramebufferStatus(o.FRAMEBUFFER);c!==o.FRAMEBUFFER_COMPLETE&&(t.dispose(),i(o,l),a(c)),i(o,l)}}function h(t,e,r,n){p||(p=t.FRAMEBUFFER_UNSUPPORTED,g=t.FRAMEBUFFER_INCOMPLETE_ATTACHMENT,v=t.FRAMEBUFFER_INCOMPLETE_DIMENSIONS,m=t.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT);var i=t.getExtension("WEBGL_draw_buffers");if(!y&&i&&o(t,i),Array.isArray(e)&&(n=r,r=0|e[1],e=0|e[0]),"number"!=typeof e)throw new Error("gl-fbo: Missing shape parameter");var a=t.getParameter(t.MAX_RENDERBUFFER_SIZE);if(e<0||e>a||r<0||r>a)throw new Error("gl-fbo: Parameters are too large for FBO");n=n||{};var s=1;if("color"in n){if(s=Math.max(0|n.color,0),s<0)throw new Error("gl-fbo: Must specify a nonnegative number of colors");if(s>1){if(!i)throw new Error("gl-fbo: Multiple draw buffer extension not supported");if(s>t.getParameter(i.MAX_COLOR_ATTACHMENTS_WEBGL))throw new Error("gl-fbo: Context does not support "+s+" draw buffers")}}var l=t.UNSIGNED_BYTE,u=t.getExtension("OES_texture_float");if(n.float&&s>0){if(!u)throw new Error("gl-fbo: Context does not support floating point textures");l=t.FLOAT}else n.preferFloat&&s>0&&u&&(l=t.FLOAT);var f=!0;"depth"in n&&(f=!!n.depth);var h=!1;return"stencil"in n&&(h=!!n.stencil),new c(t,e,r,l,s,f,h,i)}var d=t("gl-texture2d");e.exports=h;var p,g,v,m,y=null,b=c.prototype;Object.defineProperties(b,{shape:{get:function(){return this._destroyed?[0,0]:this._shapeVector},set:function(t){if(Array.isArray(t)||(t=[0|t,0|t]),2!==t.length)throw new Error("gl-fbo: Shape vector must be length 2");var e=0|t[0],r=0|t[1];return f(this,e,r),[e,r]},enumerable:!1},width:{get:function(){return this._destroyed?0:this._shape[0]},set:function(t){return t=0|t,f(this,t,this._shape[1]),t},enumerable:!1},height:{get:function(){return this._destroyed?0:this._shape[1]},set:function(t){return t=0|t,f(this,this._shape[0],t),t},enumerable:!1}}),b.bind=function(){if(!this._destroyed){var t=this.gl;t.bindFramebuffer(t.FRAMEBUFFER,this.handle),t.viewport(0,0,this._shape[0],this._shape[1])}},b.dispose=function(){if(!this._destroyed){this._destroyed=!0;var t=this.gl;t.deleteFramebuffer(this.handle),this.handle=null,this.depth&&(this.depth.dispose(),this.depth=null),this._depth_rb&&(t.deleteRenderbuffer(this._depth_rb),this._depth_rb=null);for(var e=0;e<this.color.length;++e)this.color[e].dispose(),this.color[e]=null;this._color_rb&&(t.deleteRenderbuffer(this._color_rb),this._color_rb=null)}}},{"gl-texture2d":144}],100:[function(t,e,r){function n(t,e,r){"use strict";var n=a(e)||"of unknown name (see npm glsl-shader-name)",l="unknown type";void 0!==r&&(l=r===o.FRAGMENT_SHADER?"fragment":"vertex");for(var u=i("Error compiling %s shader %s:\n",l,n),c=i("%s%s",u,t),f=t.split("\n"),h={},d=0;d<f.length;d++){var p=f[d];if(""!==p){var g=parseInt(p.split(":")[2]);if(isNaN(g))throw new Error(i("Could not parse error: %s",p));h[g]=p}}for(var v=s(e).split("\n"),d=0;d<v.length;d++)if(h[d+3]||h[d+2]||h[d+1]){var m=v[d];if(u+=m+"\n",h[d+1]){var y=h[d+1];y=y.substr(y.split(":",3).join(":").length+1).trim(),u+=i("^^^ %s\n\n",y)}}return{long:u.trim(),short:c.trim()}}var i=t("sprintf-js").sprintf,o=t("gl-constants/lookup"),a=t("glsl-shader-name"),s=t("add-line-numbers");e.exports=n},{"add-line-numbers":11,"gl-constants/lookup":96,"glsl-shader-name":156,"sprintf-js":237}],101:[function(t,e,r){var n=t("gl-shader"),i="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, nextPosition;\nattribute float arcLength, lineWidth;\nattribute vec4 color;\n\nuniform vec2 screenShape;\nuniform float pixelRatio;\nuniform mat4 model, view, projection;\n\nvarying vec4 fragColor;\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\n\nvoid main() {\n  vec4 projected = projection * view * model * vec4(position, 1.0);\n  vec4 tangentClip = projection * view * model * vec4(nextPosition - position, 0.0);\n  vec2 tangent = normalize(screenShape * tangentClip.xy);\n  vec2 offset = 0.5 * pixelRatio * lineWidth * vec2(tangent.y, -tangent.x) / screenShape;\n\n  gl_Position = vec4(projected.xy + projected.w * offset, projected.zw);\n\n  worldPosition = position;\n  pixelArcLength = arcLength;\n  fragColor = color;\n}\n",o="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3      clipBounds[2];\nuniform sampler2D dashTexture;\nuniform float     dashScale;\nuniform float     opacity;\n\nvarying vec3    worldPosition;\nvarying float   pixelArcLength;\nvarying vec4    fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  float dashWeight = texture2D(dashTexture, vec2(dashScale * pixelArcLength, 0)).r;\n  if(dashWeight < 0.5) {\n    discard;\n  }\n  gl_FragColor = fragColor * opacity;\n}\n",a="precision mediump float;\n#define GLSLIFY 1\n\n#define FLOAT_MAX  1.70141184e38\n#define FLOAT_MIN  1.17549435e-38\n\nlowp vec4 encode_float_1_0(highp float v) {\n  highp float av = abs(v);\n\n  //Handle special cases\n  if(av < FLOAT_MIN) {\n    return vec4(0.0, 0.0, 0.0, 0.0);\n  } else if(v > FLOAT_MAX) {\n    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;\n  } else if(v < -FLOAT_MAX) {\n    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;\n  }\n\n  highp vec4 c = vec4(0,0,0,0);\n\n  //Compute exponent and mantissa\n  highp float e = floor(log2(av));\n  highp float m = av * pow(2.0, -e) - 1.0;\n  \n  //Unpack mantissa\n  c[1] = floor(128.0 * m);\n  m -= c[1] / 128.0;\n  c[2] = floor(32768.0 * m);\n  m -= c[2] / 32768.0;\n  c[3] = floor(8388608.0 * m);\n  \n  //Unpack exponent\n  highp float ebias = e + 127.0;\n  c[0] = floor(ebias / 2.0);\n  ebias -= c[0] * 2.0;\n  c[1] += floor(ebias) * 128.0; \n\n  //Unpack sign bit\n  c[0] += 128.0 * step(0.0, -v);\n\n  //Scale back to range\n  return c / 255.0;\n}\n\n\n\nuniform float pickId;\nuniform vec3 clipBounds[2];\n\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId/255.0, encode_float_1_0(pixelArcLength).xyz);\n}",s=[{name:"position",type:"vec3"},{name:"nextPosition",type:"vec3"},{name:"arcLength",type:"float"},{name:"lineWidth",type:"float"},{name:"color",type:"vec4"}];r.createShader=function(t){return n(t,i,o,null,s)},r.createPickShader=function(t){return n(t,i,a,null,s)}},{"gl-shader":133}],102:[function(t,e,r){"use strict";function n(t,e){for(var r=0,n=0;n<3;++n){var i=t[n]-e[n];r+=i*i}return Math.sqrt(r)}function i(t){for(var e=[[-1e6,-1e6,-1e6],[1e6,1e6,1e6]],r=0;r<3;++r)e[0][r]=Math.max(t[0][r],e[0][r]),e[1][r]=Math.min(t[1][r],e[1][r]);return e}function o(t,e,r,n){this.arcLength=t,this.position=e,this.index=r,this.dataCoordinate=n}function a(t,e,r,n,i,o){this.gl=t,this.shader=e,this.pickShader=r,this.buffer=n,this.vao=i,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.points=[],this.arcLength=[],this.vertexCount=0,this.bounds=[[0,0,0],[0,0,0]],this.pickId=0,this.lineWidth=1,this.texture=o,this.dashScale=1,this.opacity=1,this.dirty=!0,this.pixelRatio=1}function s(t){var e=t.gl||t.scene&&t.scene.gl,r=g(e);r.attributes.position.location=0,r.attributes.nextPosition.location=1,r.attributes.arcLength.location=2,r.attributes.lineWidth.location=3,r.attributes.color.location=4;var n=v(e);n.attributes.position.location=0,
++n.attributes.nextPosition.location=1,n.attributes.arcLength.location=2,n.attributes.lineWidth.location=3,n.attributes.color.location=4;for(var i=l(e),o=u(e,[{buffer:i,size:3,offset:0,stride:48},{buffer:i,size:3,offset:12,stride:48},{buffer:i,size:1,offset:24,stride:48},{buffer:i,size:1,offset:28,stride:48},{buffer:i,size:4,offset:32,stride:48}]),s=d(new Array(1024),[256,1,4]),f=0;f<1024;++f)s.data[f]=255;var h=c(e,s);h.wrap=e.REPEAT;var p=new a(e,r,n,i,o,h);return p.update(t),p}e.exports=s;var l=t("gl-buffer"),u=t("gl-vao"),c=t("gl-texture2d"),f=t("glsl-read-float"),h=t("binary-search-bounds"),d=t("ndarray"),p=t("./lib/shaders"),g=p.createShader,v=p.createPickShader,m=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],y=a.prototype;y.isTransparent=function(){return this.opacity<1},y.isOpaque=function(){return this.opacity>=1},y.pickSlots=1,y.setPickBase=function(t){this.pickId=t},y.drawTransparent=y.draw=function(t){var e=this.gl,r=this.shader,n=this.vao;r.bind(),r.uniforms={model:t.model||m,view:t.view||m,projection:t.projection||m,clipBounds:i(this.clipBounds),dashTexture:this.texture.bind(),dashScale:this.dashScale/this.arcLength[this.arcLength.length-1],opacity:this.opacity,screenShape:[e.drawingBufferWidth,e.drawingBufferHeight],pixelRatio:this.pixelRatio},n.bind(),n.draw(e.TRIANGLE_STRIP,this.vertexCount)},y.drawPick=function(t){var e=this.gl,r=this.pickShader,n=this.vao;r.bind(),r.uniforms={model:t.model||m,view:t.view||m,projection:t.projection||m,pickId:this.pickId,clipBounds:i(this.clipBounds),screenShape:[e.drawingBufferWidth,e.drawingBufferHeight],pixelRatio:this.pixelRatio},n.bind(),n.draw(e.TRIANGLE_STRIP,this.vertexCount)},y.update=function(t){var e,r;this.dirty=!0;var i=!!t.connectGaps;"dashScale"in t&&(this.dashScale=t.dashScale),"opacity"in t&&(this.opacity=+t.opacity);var o=t.position||t.positions;if(o){var a=t.color||t.colors||[0,0,0,1],s=t.lineWidth||1,l=[],u=[],c=[],f=0,p=0,g=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],v=!1;t:for(e=1;e<o.length;++e){var m=o[e-1],y=o[e];for(u.push(f),c.push(m.slice()),r=0;r<3;++r){if(isNaN(m[r])||isNaN(y[r])||!isFinite(m[r])||!isFinite(y[r])){if(!i&&l.length>0){for(var b=0;b<24;++b)l.push(l[l.length-12]);p+=2,v=!0}continue t}g[0][r]=Math.min(g[0][r],m[r],y[r]),g[1][r]=Math.max(g[1][r],m[r],y[r])}var x,_;Array.isArray(a[0])?(x=a[e-1],_=a[e]):x=_=a,3===x.length&&(x=[x[0],x[1],x[2],1]),3===_.length&&(_=[_[0],_[1],_[2],1]);var w;w=Array.isArray(s)?s[e-1]:s;var A=f;if(f+=n(m,y),v){for(r=0;r<2;++r)l.push(m[0],m[1],m[2],y[0],y[1],y[2],A,w,x[0],x[1],x[2],x[3]);p+=2,v=!1}l.push(m[0],m[1],m[2],y[0],y[1],y[2],A,w,x[0],x[1],x[2],x[3],m[0],m[1],m[2],y[0],y[1],y[2],A,-w,x[0],x[1],x[2],x[3],y[0],y[1],y[2],m[0],m[1],m[2],f,-w,_[0],_[1],_[2],_[3],y[0],y[1],y[2],m[0],m[1],m[2],f,w,_[0],_[1],_[2],_[3]),p+=4}if(this.buffer.update(l),u.push(f),c.push(o[o.length-1].slice()),this.bounds=g,this.vertexCount=p,this.points=c,this.arcLength=u,"dashes"in t){var M=t.dashes,k=M.slice();for(k.unshift(0),e=1;e<k.length;++e)k[e]=k[e-1]+k[e];var T=d(new Array(1024),[256,1,4]);for(e=0;e<256;++e){for(r=0;r<4;++r)T.set(e,0,r,0);1&h.le(k,k[k.length-1]*e/255)?T.set(e,0,0,0):T.set(e,0,0,255)}this.texture.setPixels(T)}}},y.dispose=function(){this.shader.dispose(),this.vao.dispose(),this.buffer.dispose()},y.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=f(t.value[0],t.value[1],t.value[2],0),r=h.le(this.arcLength,e);if(r<0)return null;if(r===this.arcLength.length-1)return new o(this.arcLength[this.arcLength.length-1],this.points[this.points.length-1].slice(),r);for(var n=this.points[r],i=this.points[Math.min(r+1,this.points.length-1)],a=(e-this.arcLength[r])/(this.arcLength[r+1]-this.arcLength[r]),s=1-a,l=[0,0,0],u=0;u<3;++u)l[u]=s*n[u]+a*i[u];var c=Math.min(a<.5?r:r+1,this.points.length-1);return new o(e,l,c,this.points[c])}},{"./lib/shaders":101,"binary-search-bounds":34,"gl-buffer":94,"gl-texture2d":144,"gl-vao":148,"glsl-read-float":155,ndarray:191}],103:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=r*o-i*n;return a?(a=1/a,t[0]=o*a,t[1]=-n*a,t[2]=-i*a,t[3]=r*a,t):null}e.exports=n},{}],104:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],f=c*a-s*u,h=-c*o+s*l,d=u*o-a*l,p=r*f+n*h+i*d;return p?(p=1/p,t[0]=f*p,t[1]=(-c*n+i*u)*p,t[2]=(s*n-i*a)*p,t[3]=h*p,t[4]=(c*r-i*l)*p,t[5]=(-s*r+i*o)*p,t[6]=d*p,t[7]=(-u*r+n*l)*p,t[8]=(a*r-n*o)*p,t):null}e.exports=n},{}],105:[function(t,e,r){function n(t){var e=new Float32Array(16);return e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e[4]=t[4],e[5]=t[5],e[6]=t[6],e[7]=t[7],e[8]=t[8],e[9]=t[9],e[10]=t[10],e[11]=t[11],e[12]=t[12],e[13]=t[13],e[14]=t[14],e[15]=t[15],e}e.exports=n},{}],106:[function(t,e,r){function n(){var t=new Float32Array(16);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],107:[function(t,e,r){function n(t){var e=t[0],r=t[1],n=t[2],i=t[3],o=t[4],a=t[5],s=t[6],l=t[7],u=t[8],c=t[9],f=t[10],h=t[11],d=t[12],p=t[13],g=t[14],v=t[15],m=e*a-r*o,y=e*s-n*o,b=e*l-i*o,x=r*s-n*a,_=r*l-i*a,w=n*l-i*s,A=u*p-c*d,M=u*g-f*d,k=u*v-h*d,T=c*g-f*p,E=c*v-h*p,L=f*v-h*g;return m*L-y*E+b*T+x*k-_*M+w*A}e.exports=n},{}],108:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=r+r,s=n+n,l=i+i,u=r*a,c=n*a,f=n*s,h=i*a,d=i*s,p=i*l,g=o*a,v=o*s,m=o*l;return t[0]=1-f-p,t[1]=c+m,t[2]=h-v,t[3]=0,t[4]=c-m,t[5]=1-u-p,t[6]=d+g,t[7]=0,t[8]=h+v,t[9]=d-g,t[10]=1-u-f,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],109:[function(t,e,r){function n(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=n+n,l=i+i,u=o+o,c=n*s,f=n*l,h=n*u,d=i*l,p=i*u,g=o*u,v=a*s,m=a*l,y=a*u;return t[0]=1-(d+g),t[1]=f+y,t[2]=h-m,t[3]=0,t[4]=f-y,t[5]=1-(c+g),t[6]=p+v,t[7]=0,t[8]=h+m,t[9]=p-v,t[10]=1-(c+d),t[11]=0,t[12]=r[0],t[13]=r[1],t[14]=r[2],t[15]=1,t}e.exports=n},{}],110:[function(t,e,r){function n(t){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],111:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],f=e[9],h=e[10],d=e[11],p=e[12],g=e[13],v=e[14],m=e[15],y=r*s-n*a,b=r*l-i*a,x=r*u-o*a,_=n*l-i*s,w=n*u-o*s,A=i*u-o*l,M=c*g-f*p,k=c*v-h*p,T=c*m-d*p,E=f*v-h*g,L=f*m-d*g,S=h*m-d*v,C=y*S-b*L+x*E+_*T-w*k+A*M;return C?(C=1/C,t[0]=(s*S-l*L+u*E)*C,t[1]=(i*L-n*S-o*E)*C,t[2]=(g*A-v*w+m*_)*C,t[3]=(h*w-f*A-d*_)*C,t[4]=(l*T-a*S-u*k)*C,t[5]=(r*S-i*T+o*k)*C,t[6]=(v*x-p*A-m*b)*C,t[7]=(c*A-h*x+d*b)*C,t[8]=(a*L-s*T+u*M)*C,t[9]=(n*T-r*L-o*M)*C,t[10]=(p*w-g*x+m*y)*C,t[11]=(f*x-c*w-d*y)*C,t[12]=(s*k-a*E-l*M)*C,t[13]=(r*E-n*k+i*M)*C,t[14]=(g*b-p*_-v*y)*C,t[15]=(c*_-f*b+h*y)*C,t):null}e.exports=n},{}],112:[function(t,e,r){function n(t,e,r,n){var o,a,s,l,u,c,f,h,d,p,g=e[0],v=e[1],m=e[2],y=n[0],b=n[1],x=n[2],_=r[0],w=r[1],A=r[2];return Math.abs(g-_)<1e-6&&Math.abs(v-w)<1e-6&&Math.abs(m-A)<1e-6?i(t):(f=g-_,h=v-w,d=m-A,p=1/Math.sqrt(f*f+h*h+d*d),f*=p,h*=p,d*=p,o=b*d-x*h,a=x*f-y*d,s=y*h-b*f,p=Math.sqrt(o*o+a*a+s*s),p?(p=1/p,o*=p,a*=p,s*=p):(o=0,a=0,s=0),l=h*s-d*a,u=d*o-f*s,c=f*a-h*o,p=Math.sqrt(l*l+u*u+c*c),p?(p=1/p,l*=p,u*=p,c*=p):(l=0,u=0,c=0),t[0]=o,t[1]=l,t[2]=f,t[3]=0,t[4]=a,t[5]=u,t[6]=h,t[7]=0,t[8]=s,t[9]=c,t[10]=d,t[11]=0,t[12]=-(o*g+a*v+s*m),t[13]=-(l*g+u*v+c*m),t[14]=-(f*g+h*v+d*m),t[15]=1,t)}var i=t("./identity");e.exports=n},{"./identity":110}],113:[function(t,e,r){function n(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],f=e[8],h=e[9],d=e[10],p=e[11],g=e[12],v=e[13],m=e[14],y=e[15],b=r[0],x=r[1],_=r[2],w=r[3];return t[0]=b*n+x*s+_*f+w*g,t[1]=b*i+x*l+_*h+w*v,t[2]=b*o+x*u+_*d+w*m,t[3]=b*a+x*c+_*p+w*y,b=r[4],x=r[5],_=r[6],w=r[7],t[4]=b*n+x*s+_*f+w*g,t[5]=b*i+x*l+_*h+w*v,t[6]=b*o+x*u+_*d+w*m,t[7]=b*a+x*c+_*p+w*y,b=r[8],x=r[9],_=r[10],w=r[11],t[8]=b*n+x*s+_*f+w*g,t[9]=b*i+x*l+_*h+w*v,t[10]=b*o+x*u+_*d+w*m,t[11]=b*a+x*c+_*p+w*y,b=r[12],x=r[13],_=r[14],w=r[15],t[12]=b*n+x*s+_*f+w*g,t[13]=b*i+x*l+_*h+w*v,t[14]=b*o+x*u+_*d+w*m,t[15]=b*a+x*c+_*p+w*y,t}e.exports=n},{}],114:[function(t,e,r){function n(t,e,r,n,i){var o=1/Math.tan(e/2),a=1/(n-i);return t[0]=o/r,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=o,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=(i+n)*a,t[11]=-1,t[12]=0,t[13]=0,t[14]=2*i*n*a,t[15]=0,t}e.exports=n},{}],115:[function(t,e,r){function n(t,e,r,n){var i,o,a,s,l,u,c,f,h,d,p,g,v,m,y,b,x,_,w,A,M,k,T,E,L=n[0],S=n[1],C=n[2],R=Math.sqrt(L*L+S*S+C*C);return Math.abs(R)<1e-6?null:(R=1/R,L*=R,S*=R,C*=R,i=Math.sin(r),o=Math.cos(r),a=1-o,s=e[0],l=e[1],u=e[2],c=e[3],f=e[4],h=e[5],d=e[6],p=e[7],g=e[8],v=e[9],m=e[10],y=e[11],b=L*L*a+o,x=S*L*a+C*i,_=C*L*a-S*i,w=L*S*a-C*i,A=S*S*a+o,M=C*S*a+L*i,k=L*C*a+S*i,T=S*C*a-L*i,E=C*C*a+o,t[0]=s*b+f*x+g*_,t[1]=l*b+h*x+v*_,t[2]=u*b+d*x+m*_,t[3]=c*b+p*x+y*_,t[4]=s*w+f*A+g*M,t[5]=l*w+h*A+v*M,t[6]=u*w+d*A+m*M,t[7]=c*w+p*A+y*M,t[8]=s*k+f*T+g*E,t[9]=l*k+h*T+v*E,t[10]=u*k+d*T+m*E,t[11]=c*k+p*T+y*E,e!==t&&(t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t)}e.exports=n},{}],116:[function(t,e,r){function n(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[4],a=e[5],s=e[6],l=e[7],u=e[8],c=e[9],f=e[10],h=e[11];return e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[4]=o*i+u*n,t[5]=a*i+c*n,t[6]=s*i+f*n,t[7]=l*i+h*n,t[8]=u*i-o*n,t[9]=c*i-a*n,t[10]=f*i-s*n,t[11]=h*i-l*n,t}e.exports=n},{}],117:[function(t,e,r){function n(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[0],a=e[1],s=e[2],l=e[3],u=e[8],c=e[9],f=e[10],h=e[11];return e!==t&&(t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i-u*n,t[1]=a*i-c*n,t[2]=s*i-f*n,t[3]=l*i-h*n,t[8]=o*n+u*i,t[9]=a*n+c*i,t[10]=s*n+f*i,t[11]=l*n+h*i,t}e.exports=n},{}],118:[function(t,e,r){function n(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[0],a=e[1],s=e[2],l=e[3],u=e[4],c=e[5],f=e[6],h=e[7];return e!==t&&(t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i+u*n,t[1]=a*i+c*n,t[2]=s*i+f*n,t[3]=l*i+h*n,t[4]=u*i-o*n,t[5]=c*i-a*n,t[6]=f*i-s*n,t[7]=h*i-l*n,t}e.exports=n},{}],119:[function(t,e,r){function n(t,e,r){var n=r[0],i=r[1],o=r[2];return t[0]=e[0]*n,t[1]=e[1]*n,t[2]=e[2]*n,t[3]=e[3]*n,t[4]=e[4]*i,t[5]=e[5]*i,t[6]=e[6]*i,t[7]=e[7]*i,t[8]=e[8]*o,t[9]=e[9]*o,t[10]=e[10]*o,t[11]=e[11]*o,t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t}e.exports=n},{}],120:[function(t,e,r){function n(t,e,r){var n,i,o,a,s,l,u,c,f,h,d,p,g=r[0],v=r[1],m=r[2];return e===t?(t[12]=e[0]*g+e[4]*v+e[8]*m+e[12],t[13]=e[1]*g+e[5]*v+e[9]*m+e[13],t[14]=e[2]*g+e[6]*v+e[10]*m+e[14],t[15]=e[3]*g+e[7]*v+e[11]*m+e[15]):(n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],f=e[8],h=e[9],d=e[10],p=e[11],t[0]=n,t[1]=i,t[2]=o,t[3]=a,t[4]=s,t[5]=l,t[6]=u,t[7]=c,t[8]=f,t[9]=h,t[10]=d,t[11]=p,t[12]=n*g+s*v+f*m+e[12],t[13]=i*g+l*v+h*m+e[13],t[14]=o*g+u*v+d*m+e[14],t[15]=a*g+c*v+p*m+e[15]),t}e.exports=n},{}],121:[function(t,e,r){function n(t,e){if(t===e){var r=e[1],n=e[2],i=e[3],o=e[6],a=e[7],s=e[11];t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=r,t[6]=e[9],t[7]=e[13],t[8]=n,t[9]=o,t[11]=e[14],t[12]=i,t[13]=a,t[14]=s}else t[0]=e[0],t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=e[1],t[5]=e[5],t[6]=e[9],t[7]=e[13],t[8]=e[2],t[9]=e[6],t[10]=e[10],t[11]=e[14],t[12]=e[3],t[13]=e[7],t[14]=e[11],t[15]=e[15];return t}e.exports=n},{}],122:[function(t,e,r){"use strict";function n(t,e){switch(e.length){case 0:break;case 1:t[0]=1/e[0];break;case 4:i(t,e);break;case 9:o(t,e);break;case 16:a(t,e);break;default:throw new Error("currently supports matrices up to 4x4")}return t}e.exports=n;var i=t("gl-mat2/invert"),o=t("gl-mat3/invert"),a=t("gl-mat4/invert")},{"gl-mat2/invert":103,"gl-mat3/invert":104,"gl-mat4/invert":111}],123:[function(t,e,r){"use strict";function n(t,e){for(var r=[0,0,0,0],n=0;n<4;++n)for(var i=0;i<4;++i)r[i]+=t[4*n+i]*e[n];return r}function i(t,e,r,i,o){for(var a=n(i,n(r,n(e,[t[0],t[1],t[2],1]))),s=0;s<3;++s)a[s]/=a[3];return[.5*o[0]*(1+a[0]),.5*o[1]*(1-a[1])]}function o(t,e){if(2===t.length){for(var r=0,n=0,i=0;i<2;++i)r+=Math.pow(e[i]-t[0][i],2),n+=Math.pow(e[i]-t[1][i],2);return r=Math.sqrt(r),n=Math.sqrt(n),r+n<1e-6?[1,0]:[n/(r+n),r/(n+r)]}if(3===t.length){var o=[0,0];return u(t[0],t[1],t[2],e,o),l(t,o)}return[]}function a(t,e){for(var r=[0,0,0],n=0;n<t.length;++n)for(var i=t[n],o=e[n],a=0;a<3;++a)r[a]+=o*i[a];return r}function s(t,e,r,n,s,l){if(1===t.length)return[0,t[0].slice()];for(var u=new Array(t.length),c=0;c<t.length;++c)u[c]=i(t[c],r,n,s,l);for(var f=0,h=1/0,c=0;c<u.length;++c){for(var d=0,p=0;p<2;++p)d+=Math.pow(u[c][p]-e[p],2);d<h&&(h=d,f=c)}for(var g=o(u,e),v=0,c=0;c<3;++c){if(g[c]<-.001||g[c]>1.0001)return null;v+=g[c]}return Math.abs(v-1)>.001?null:[f,a(t,g),g]}var l=t("barycentric"),u=t("polytope-closest-point/lib/closest_point_2d.js");e.exports=s},{barycentric:17,"polytope-closest-point/lib/closest_point_2d.js":204}],124:[function(t,e,r){var n="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, normal;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model\n           , view\n           , projection;\nuniform vec3 eyePosition\n           , lightPosition;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec4 m_position  = model * vec4(position, 1.0);\n  vec4 t_position  = view * m_position;\n  gl_Position      = projection * t_position;\n  f_color          = color;\n  f_normal         = normal;\n  f_data           = position;\n  f_eyeDirection   = eyePosition   - position;\n  f_lightDirection = lightPosition - position;\n  f_uv             = uv;\n}",i="precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat cookTorranceSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness,\n  float fresnel) {\n\n  float VdotN = max(dot(viewDirection, surfaceNormal), 0.0);\n  float LdotN = max(dot(lightDirection, surfaceNormal), 0.0);\n\n  //Half angle vector\n  vec3 H = normalize(lightDirection + viewDirection);\n\n  //Geometric term\n  float NdotH = max(dot(surfaceNormal, H), 0.0);\n  float VdotH = max(dot(viewDirection, H), 0.000001);\n  float LdotH = max(dot(lightDirection, H), 0.000001);\n  float G1 = (2.0 * NdotH * VdotN) / VdotH;\n  float G2 = (2.0 * NdotH * LdotN) / LdotH;\n  float G = min(1.0, min(G1, G2));\n  \n  //Distribution term\n  float D = beckmannDistribution_2_0(NdotH, roughness);\n\n  //Fresnel term\n  float F = pow(1.0 - VdotN, fresnel);\n\n  //Multiply terms and done\n  return  G * F * D / max(3.14159265 * VdotN, 0.000001);\n}\n\n\n\nuniform vec3 clipBounds[2];\nuniform float roughness\n            , fresnel\n            , kambient\n            , kdiffuse\n            , kspecular\n            , opacity;\nuniform sampler2D texture;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(f_normal);\n  vec3 L = normalize(f_lightDirection);\n  vec3 V = normalize(f_eyeDirection);\n  \n  if(!gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = cookTorranceSpecular_1_1(L, V, N, roughness, fresnel);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = f_color * texture2D(texture, f_uv);\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = litColor * opacity;\n}",o="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model, view, projection;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_color = color;\n  f_data  = position;\n  f_uv    = uv;\n}",a="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 clipBounds[2];\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}",s="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\nattribute float pointSize;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position = projection * view * model * vec4(position, 1.0);\n  }\n  gl_PointSize = pointSize;\n  f_color = color;\n  f_uv = uv;\n}",l="precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec2 pointR = gl_PointCoord.xy - vec2(0.5,0.5);\n  if(dot(pointR, pointR) > 0.25) {\n    discard;\n  }\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}",u="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_id        = id;\n  f_position  = position;\n}",c="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3  clipBounds[2];\nuniform float pickId;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(f_position, clipBounds[0])) || \n     any(greaterThan(f_position, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId, f_id.xyz);\n}",f="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3  position;\nattribute float pointSize;\nattribute vec4  id;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position  = projection * view * model * vec4(position, 1.0);\n    gl_PointSize = pointSize;\n  }\n  f_id         = id;\n  f_position   = position;\n}",h="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n}",d="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 contourColor;\n\nvoid main() {\n  gl_FragColor = vec4(contourColor,1);\n}\n";r.meshShader={vertex:n,fragment:i,attributes:[{name:"position",type:"vec3"},{name:"normal",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"}]},r.wireShader={vertex:o,fragment:a,attributes:[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"}]},r.pointShader={vertex:s,fragment:l,attributes:[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"},{name:"pointSize",type:"float"}]},r.pickShader={vertex:u,fragment:c,attributes:[{name:"position",type:"vec3"},{name:"id",type:"vec4"}]},r.pointPickShader={vertex:f,fragment:c,attributes:[{name:"position",type:"vec3"},{name:"pointSize",type:"float"},{name:"id",type:"vec4"}]},r.contourShader={vertex:h,fragment:d,attributes:[{name:"position",type:"vec3"}]}},{}],125:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s,l,u,c,f,h,d,p,g,v,m,y,b,x,_,w,A,M,k,T){this.gl=t,this.cells=[],this.positions=[],this.intensity=[],this.texture=e,this.dirty=!0,this.triShader=r,this.lineShader=n,this.pointShader=i,this.pickShader=o,this.pointPickShader=a,this.contourShader=s,this.trianglePositions=l,this.triangleColors=c,this.triangleNormals=h,this.triangleUVs=f,this.triangleIds=u,this.triangleVAO=d,this.triangleCount=0,this.lineWidth=1,this.edgePositions=p,this.edgeColors=v,this.edgeUVs=m,this.edgeIds=g,this.edgeVAO=y,this.edgeCount=0,this.pointPositions=b,this.pointColors=_,this.pointUVs=w,this.pointSizes=A,this.pointIds=x,this.pointVAO=M,this.pointCount=0,this.contourLineWidth=1,this.contourPositions=k,this.contourVAO=T,this.contourCount=0,this.contourColor=[0,0,0],this.contourEnable=!0,this.pickId=1,this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.lightPosition=[1e5,1e5,0],this.ambientLight=.8,this.diffuseLight=.8,this.specularLight=2,this.roughness=.5,this.fresnel=1.5,this.opacity=1,this._model=I,this._view=I,this._projection=I,this._resolution=[1,1]}function i(t){for(var e=M({colormap:t,nshades:256,format:"rgba"}),r=new Uint8Array(1024),n=0;n<256;++n){for(var i=e[n],o=0;o<3;++o)r[4*n+o]=i[o];r[4*n+3]=255*i[3]}return A(r,[256,256,4],[4,0,1])}function o(t,e,r){for(var n=new Array(e),i=0;i<e;++i)n[i]=0;for(var o=t.length,i=0;i<o;++i)for(var a=t[i],s=0;s<a.length;++s)n[a[s]]=r[i];return n}function a(t){for(var e=t.length,r=new Array(e),n=0;n<e;++n)r[n]=t[n][2];return r}function s(t){var e=v(t,S);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e.attributes.normal.location=4,e}function l(t){var e=v(t,C);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e}function u(t){var e=v(t,R);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e.attributes.pointSize.location=4,e}function c(t){var e=v(t,P);return e.attributes.position.location=0,e.attributes.id.location=1,e}function f(t){var e=v(t,N);return 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v=m(e),x=m(e),_=m(e),w=m(e),M=m(e),k=y(e,[{buffer:v,type:e.FLOAT,size:3},{buffer:M,type:e.UNSIGNED_BYTE,size:4,normalized:!0},{buffer:x,type:e.FLOAT,size:4},{buffer:_,type:e.FLOAT,size:2},{buffer:w,type:e.FLOAT,size:3}]),T=m(e),E=m(e),L=m(e),S=m(e),C=y(e,[{buffer:T,type:e.FLOAT,size:3},{buffer:S,type:e.UNSIGNED_BYTE,size:4,normalized:!0},{buffer:E,type:e.FLOAT,size:4},{buffer:L,type:e.FLOAT,size:2}]),R=m(e),P=m(e),N=m(e),z=m(e),I=m(e),O=y(e,[{buffer:R,type:e.FLOAT,size:3},{buffer:I,type:e.UNSIGNED_BYTE,size:4,normalized:!0},{buffer:P,type:e.FLOAT,size:4},{buffer:N,type:e.FLOAT,size:2},{buffer:z,type:e.FLOAT,size:1}]),j=m(e),D=y(e,[{buffer:j,type:e.FLOAT,size:3}]),F=new n(e,g,r,i,o,a,d,p,v,M,x,_,w,k,T,S,E,L,C,R,I,P,N,z,O,j,D);return F.update(t),F}var p=1e-6,g=1e-6,v=t("gl-shader"),m=t("gl-buffer"),y=t("gl-vao"),b=t("gl-texture2d"),x=t("normals"),_=t("gl-mat4/multiply"),w=t("gl-mat4/invert"),A=t("ndarray"),M=t("colormap"),k=t("simplicial-complex-contour"),T=t("typedarray-pool"),E=t("./lib/shaders"),L=t("./lib/closest-point"),S=E.meshShader,C=E.wireShader,R=E.pointShader,P=E.pickShader,N=E.pointPickShader,z=E.contourShader,I=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],O=n.prototype;O.isOpaque=function(){return this.opacity>=1},O.isTransparent=function(){return this.opacity<1},O.pickSlots=1,O.setPickBase=function(t){this.pickId=t},O.highlight=function(t){if(!t||!this.contourEnable)return void(this.contourCount=0);for(var e=k(this.cells,this.intensity,t.intensity),r=e.cells,n=e.vertexIds,i=e.vertexWeights,o=r.length,a=T.mallocFloat32(6*o),s=0,l=0;l<o;++l)for(var u=r[l],c=0;c<2;++c){var f=u[0];2===u.length&&(f=u[c]);for(var h=n[f][0],d=n[f][1],p=i[f],g=1-p,v=this.positions[h],m=this.positions[d],y=0;y<3;++y)a[s++]=p*v[y]+g*m[y]}this.contourCount=s/3|0,this.contourPositions.update(a.subarray(0,s)),T.free(a)},O.update=function(t){t=t||{};var e=this.gl;this.dirty=!0,"contourEnable"in t&&(this.contourEnable=t.contourEnable),"contourColor"in t&&(this.contourColor=t.contourColor),"lineWidth"in t&&(this.lineWidth=t.lineWidth),"lightPosition"in t&&(this.lightPosition=t.lightPosition),"opacity"in t&&(this.opacity=t.opacity),"ambient"in t&&(this.ambientLight=t.ambient),"diffuse"in t&&(this.diffuseLight=t.diffuse),"specular"in t&&(this.specularLight=t.specular),"roughness"in t&&(this.roughness=t.roughness),"fresnel"in t&&(this.fresnel=t.fresnel),t.texture?(this.texture.dispose(),this.texture=b(e,t.texture)):t.colormap&&(this.texture.shape=[256,256],this.texture.minFilter=e.LINEAR_MIPMAP_LINEAR,this.texture.magFilter=e.LINEAR,this.texture.setPixels(i(t.colormap)),this.texture.generateMipmap());var r=t.cells,n=t.positions;if(n&&r){var s=[],l=[],u=[],c=[],f=[],h=[],d=[],v=[],m=[],y=[],_=[],w=[],A=[],M=[];this.cells=r,this.positions=n;var k=t.vertexNormals,T=t.cellNormals,E=void 0===t.vertexNormalsEpsilon?p:t.vertexNormalsEpsilon,L=void 0===t.faceNormalsEpsilon?g:t.faceNormalsEpsilon;t.useFacetNormals&&!T&&(T=x.faceNormals(r,n,L)),T||k||(k=x.vertexNormals(r,n,E));var S=t.vertexColors,C=t.cellColors,R=t.meshColor||[1,1,1,1],P=t.vertexUVs,N=t.vertexIntensity,z=t.cellUVs,I=t.cellIntensity,O=1/0,j=-(1/0);if(!P&&!z)if(N)for(var D=0;D<N.length;++D){var F=N[D];O=Math.min(O,F),j=Math.max(j,F)}else if(I)for(var D=0;D<I.length;++D){var F=I[D];O=Math.min(O,F),j=Math.max(j,F)}else for(var D=0;D<n.length;++D){var F=n[D][2];O=Math.min(O,F),j=Math.max(j,F)}N?this.intensity=N:I?this.intensity=o(r,n.length,I):this.intensity=a(n);var B=t.pointSizes,U=t.pointSize||1;this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]];for(var D=0;D<n.length;++D)for(var V=n[D],q=0;q<3;++q)!isNaN(V[q])&&isFinite(V[q])&&(this.bounds[0][q]=Math.min(this.bounds[0][q],V[q]),this.bounds[1][q]=Math.max(this.bounds[1][q],V[q]));var H=0,G=0,X=0;t:for(var D=0;D<r.length;++D){var Y=r[D];switch(Y.length){case 1:for(var W=Y[0],V=n[W],q=0;q<3;++q)if(isNaN(V[q])||!isFinite(V[q]))continue t;y.push(V[0],V[1],V[2]);var Z;Z=S?S[W]:C?C[D]:R,3===Z.length?_.push(Z[0],Z[1],Z[2],1):_.push(Z[0],Z[1],Z[2],Z[3]);var Q;Q=P?P[W]:N?[(N[W]-O)/(j-O),0]:z?z[D]:I?[(I[D]-O)/(j-O),0]:[(V[2]-O)/(j-O),0],w.push(Q[0],Q[1]),B?A.push(B[W]):A.push(U),M.push(D),X+=1;break;case 2:for(var q=0;q<2;++q)for(var W=Y[q],V=n[W],$=0;$<3;++$)if(isNaN(V[$])||!isFinite(V[$]))continue t;for(var q=0;q<2;++q){var W=Y[q],V=n[W];h.push(V[0],V[1],V[2]);var Z;Z=S?S[W]:C?C[D]:R,3===Z.length?d.push(Z[0],Z[1],Z[2],1):d.push(Z[0],Z[1],Z[2],Z[3]);var Q;Q=P?P[W]:N?[(N[W]-O)/(j-O),0]:z?z[D]:I?[(I[D]-O)/(j-O),0]:[(V[2]-O)/(j-O),0],v.push(Q[0],Q[1]),m.push(D)}G+=1;break;case 3:for(var q=0;q<3;++q)for(var W=Y[q],V=n[W],$=0;$<3;++$)if(isNaN(V[$])||!isFinite(V[$]))continue t;for(var q=0;q<3;++q){var W=Y[q],V=n[W];s.push(V[0],V[1],V[2]);var Z;Z=S?S[W]:C?C[D]:R,3===Z.length?l.push(Z[0],Z[1],Z[2],1):l.push(Z[0],Z[1],Z[2],Z[3]);var Q;Q=P?P[W]:N?[(N[W]-O)/(j-O),0]:z?z[D]:I?[(I[D]-O)/(j-O),0]:[(V[2]-O)/(j-O),0],c.push(Q[0],Q[1]);var K;K=k?k[W]:T[D],u.push(K[0],K[1],K[2]),f.push(D)}H+=1}}this.pointCount=X,this.edgeCount=G,this.triangleCount=H,this.pointPositions.update(y),this.pointColors.update(_),this.pointUVs.update(w),this.pointSizes.update(A),this.pointIds.update(new Uint32Array(M)),this.edgePositions.update(h),this.edgeColors.update(d),this.edgeUVs.update(v),this.edgeIds.update(new Uint32Array(m)),this.trianglePositions.update(s),this.triangleColors.update(l),this.triangleUVs.update(c),this.triangleNormals.update(u),this.triangleIds.update(new Uint32Array(f))}},O.drawTransparent=O.draw=function(t){t=t||{};for(var e=this.gl,r=t.model||I,n=t.view||I,i=t.projection||I,o=[[-1e6,-1e6,-1e6],[1e6,1e6,1e6]],a=0;a<3;++a)o[0][a]=Math.max(o[0][a],this.clipBounds[0][a]),o[1][a]=Math.min(o[1][a],this.clipBounds[1][a]);var s={model:r,view:n,projection:i,clipBounds:o,kambient:this.ambientLight,kdiffuse:this.diffuseLight,kspecular:this.specularLight,roughness:this.roughness,fresnel:this.fresnel,eyePosition:[0,0,0],lightPosition:[0,0,0],opacity:this.opacity,contourColor:this.contourColor,texture:0};this.texture.bind(0);var l=new Array(16);_(l,s.view,s.model),_(l,s.projection,l),w(l,l);for(var a=0;a<3;++a)s.eyePosition[a]=l[12+a]/l[15];for(var u=l[15],a=0;a<3;++a)u+=this.lightPosition[a]*l[4*a+3];for(var a=0;a<3;++a){for(var c=l[12+a],f=0;f<3;++f)c+=l[4*f+a]*this.lightPosition[f];s.lightPosition[a]=c/u}if(this.triangleCount>0){var h=this.triShader;h.bind(),h.uniforms=s,this.triangleVAO.bind(),e.drawArrays(e.TRIANGLES,0,3*this.triangleCount),this.triangleVAO.unbind()}if(this.edgeCount>0&&this.lineWidth>0){var h=this.lineShader;h.bind(),h.uniforms=s,this.edgeVAO.bind(),e.lineWidth(this.lineWidth),e.drawArrays(e.LINES,0,2*this.edgeCount),this.edgeVAO.unbind()}if(this.pointCount>0){var h=this.pointShader;h.bind(),h.uniforms=s,this.pointVAO.bind(),e.drawArrays(e.POINTS,0,this.pointCount),this.pointVAO.unbind()}if(this.contourEnable&&this.contourCount>0&&this.contourLineWidth>0){var h=this.contourShader;h.bind(),h.uniforms=s,this.contourVAO.bind(),e.drawArrays(e.LINES,0,this.contourCount),this.contourVAO.unbind()}},O.drawPick=function(t){t=t||{};for(var e=this.gl,r=t.model||I,n=t.view||I,i=t.projection||I,o=[[-1e6,-1e6,-1e6],[1e6,1e6,1e6]],a=0;a<3;++a)o[0][a]=Math.max(o[0][a],this.clipBounds[0][a]),o[1][a]=Math.min(o[1][a],this.clipBounds[1][a]);this._model=[].slice.call(r),this._view=[].slice.call(n),this._projection=[].slice.call(i),this._resolution=[e.drawingBufferWidth,e.drawingBufferHeight];var s={model:r,view:n,projection:i,clipBounds:o,pickId:this.pickId/255},l=this.pickShader;if(l.bind(),l.uniforms=s,this.triangleCount>0&&(this.triangleVAO.bind(),e.drawArrays(e.TRIANGLES,0,3*this.triangleCount),this.triangleVAO.unbind()),this.edgeCount>0&&(this.edgeVAO.bind(),e.lineWidth(this.lineWidth),e.drawArrays(e.LINES,0,2*this.edgeCount),this.edgeVAO.unbind()),this.pointCount>0){var l=this.pointPickShader;l.bind(),l.uniforms=s,this.pointVAO.bind(),e.drawArrays(e.POINTS,0,this.pointCount),this.pointVAO.unbind()}},O.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;for(var e=t.value[0]+256*t.value[1]+65536*t.value[2],r=this.cells[e],n=this.positions,i=new Array(r.length),o=0;o<r.length;++o)i[o]=n[r[o]];var a=L(i,[t.coord[0],this._resolution[1]-t.coord[1]],this._model,this._view,this._projection,this._resolution);if(!a)return null;for(var s=a[2],l=0,o=0;o<r.length;++o)l+=s[o]*this.intensity[r[o]];return{position:a[1],index:r[a[0]],cell:r,cellId:e,intensity:l,dataCoordinate:this.positions[r[a[0]]]}},O.dispose=function(){this.texture.dispose(),this.triShader.dispose(),this.lineShader.dispose(),this.pointShader.dispose(),this.pickShader.dispose(),this.pointPickShader.dispose(),this.triangleVAO.dispose(),this.trianglePositions.dispose(),this.triangleColors.dispose(),this.triangleUVs.dispose(),this.triangleNormals.dispose(),this.triangleIds.dispose(),this.edgeVAO.dispose(),this.edgePositions.dispose(),this.edgeColors.dispose(),this.edgeUVs.dispose(),this.edgeIds.dispose(),this.pointVAO.dispose(),this.pointPositions.dispose(),this.pointColors.dispose(),this.pointUVs.dispose(),this.pointSizes.dispose(),this.pointIds.dispose(),this.contourVAO.dispose(),this.contourPositions.dispose(),this.contourShader.dispose()},e.exports=d},{"./lib/closest-point":123,"./lib/shaders":124,colormap:61,"gl-buffer":94,"gl-mat4/invert":111,"gl-mat4/multiply":113,"gl-shader":133,"gl-texture2d":144,"gl-vao":148,ndarray:191,normals:193,"simplicial-complex-contour":227,"typedarray-pool":246}],126:[function(t,e,r){var n=t("gl-shader"),i="precision mediump float;\n#define GLSLIFY 1\nattribute vec2 position;\nvarying vec2 uv;\nvoid main() {\n  uv = position;\n  gl_Position = vec4(position, 0, 1);\n}",o="precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D accumBuffer;\nvarying vec2 uv;\n\nvoid main() {\n  vec4 accum = texture2D(accumBuffer, 0.5 * (uv + 1.0));\n  gl_FragColor = min(vec4(1,1,1,1), accum);\n}";
++e.exports=function(t){return n(t,i,o,null,[{name:"position",type:"vec2"}])}},{"gl-shader":133}],127:[function(t,e,r){"use strict";function n(){this.mouse=[-1,-1],this.screen=null,this.distance=1/0,this.index=null,this.dataCoordinate=null,this.dataPosition=null,this.object=null,this.data=null}function i(t,e){var r=null;try{r=t.getContext("webgl",e),r||(r=t.getContext("experimental-webgl",e))}catch(t){return null}return r}function o(t){var e=Math.round(Math.log(Math.abs(t))/Math.log(10));if(e<0){var r=Math.round(Math.pow(10,-e));return Math.ceil(t*r)/r}if(e>0){var r=Math.round(Math.pow(10,e));return Math.ceil(t/r)*r}return Math.ceil(t)}function a(t){return"boolean"!=typeof t||t}function s(t){function e(){if(!_&&H.autoResize){var t=w.parentNode,e=1,r=1;t&&t!==document.body?(e=t.clientWidth,r=t.clientHeight):(e=window.innerWidth,r=window.innerHeight);var n=0|Math.ceil(e*H.pixelRatio),i=0|Math.ceil(r*H.pixelRatio);if(n!==w.width||i!==w.height){w.width=n,w.height=i;var o=w.style;o.position=o.position||"absolute",o.left="0px",o.top="0px",o.width=e+"px",o.height=r+"px",D=!0}}}function r(){for(var t=z.length,e=j.length,r=0;r<e;++r)O[r]=0;t:for(var r=0;r<t;++r){var n=z[r],i=n.pickSlots;if(i){for(var o=0;o<e;++o)if(O[o]+i<255){I[r]=o,n.setPickBase(O[o]+1),O[o]+=i;continue t}var a=h(M,q);I[r]=e,j.push(a),O.push(i),n.setPickBase(1),e+=1}else I[r]=-1}for(;e>0&&0===O[e-1];)O.pop(),j.pop().dispose()}function s(){return!!H.contextLost||void(M.isContextLost()&&(H.contextLost=!0,H.mouseListener.enabled=!1,H.selection.object=null,H.oncontextloss&&H.oncontextloss()))}function y(){if(!s()){M.colorMask(!0,!0,!0,!0),M.depthMask(!0),M.disable(M.BLEND),M.enable(M.DEPTH_TEST);for(var t=z.length,e=j.length,r=0;r<e;++r){var n=j[r];n.shape=G,n.begin();for(var i=0;i<t;++i)if(I[i]===r){var o=z[i];o.drawPick&&(o.pixelRatio=1,o.drawPick(V))}n.end()}}}function b(){if(!s()){e();var t=H.camera.tick();V.view=H.camera.matrix,D=D||t,F=F||t,R.pixelRatio=H.pixelRatio,N.pixelRatio=H.pixelRatio;var r=z.length,n=W[0],i=W[1];n[0]=n[1]=n[2]=1/0,i[0]=i[1]=i[2]=-(1/0);for(var a=0;a<r;++a){var l=z[a];l.pixelRatio=H.pixelRatio,l.axes=H.axes,D=D||!!l.dirty,F=F||!!l.dirty;var u=l.bounds;if(u)for(var f=u[0],h=u[1],d=0;d<3;++d)n[d]=Math.min(n[d],f[d]),i[d]=Math.max(i[d],h[d])}var g=H.bounds;if(H.autoBounds)for(var d=0;d<3;++d){if(i[d]<n[d])n[d]=-1,i[d]=1;else{n[d]===i[d]&&(n[d]-=1,i[d]+=1);var m=.05*(i[d]-n[d]);n[d]=n[d]-m,i[d]=i[d]+m}g[0][d]=n[d],g[1][d]=i[d]}for(var b=!1,d=0;d<3;++d)b=b||Z[0][d]!==g[0][d]||Z[1][d]!==g[1][d],Z[0][d]=g[0][d],Z[1][d]=g[1][d];if(b){for(var x=[0,0,0],a=0;a<3;++a)x[a]=o((g[1][a]-g[0][a])/10);R.autoTicks?R.update({bounds:g,tickSpacing:x}):R.update({bounds:g})}F=F||b,D=D||b;var _=M.drawingBufferWidth,w=M.drawingBufferHeight;q[0]=_,q[1]=w,G[0]=0|Math.max(_/H.pixelRatio,1),G[1]=0|Math.max(w/H.pixelRatio,1),v(B,H.fovy,_/w,H.zNear,H.zFar);for(var a=0;a<16;++a)U[a]=0;U[15]=1;for(var A=0,a=0;a<3;++a)A=Math.max(A,g[1][a]-g[0][a]);for(var a=0;a<3;++a)H.autoScale?U[5*a]=H.aspect[a]/(g[1][a]-g[0][a]):U[5*a]=1/A,H.autoCenter&&(U[12+a]=.5*-U[5*a]*(g[0][a]+g[1][a]));for(var a=0;a<r;++a){var l=z[a];l.axesBounds=g,H.clipToBounds&&(l.clipBounds=g)}if(T.object&&(H.snapToData?N.position=T.dataCoordinate:N.position=T.dataPosition,N.bounds=g),F&&(F=!1,y()),D){H.axesPixels=c(H.axes,V,_,w),H.onrender&&H.onrender(),M.bindFramebuffer(M.FRAMEBUFFER,null),M.viewport(0,0,_,w);var k=H.clearColor;M.clearColor(k[0],k[1],k[2],k[3]),M.clear(M.COLOR_BUFFER_BIT|M.DEPTH_BUFFER_BIT),M.depthMask(!0),M.colorMask(!0,!0,!0,!0),M.enable(M.DEPTH_TEST),M.depthFunc(M.LEQUAL),M.disable(M.BLEND),M.disable(M.CULL_FACE);var S=!1;R.enable&&(S=S||R.isTransparent(),R.draw(V)),N.axes=R,T.object&&N.draw(V),M.disable(M.CULL_FACE);for(var a=0;a<r;++a){var l=z[a];l.axes=R,l.pixelRatio=H.pixelRatio,l.isOpaque&&l.isOpaque()&&l.draw(V),l.isTransparent&&l.isTransparent()&&(S=!0)}if(S){E.shape=q,E.bind(),M.clear(M.DEPTH_BUFFER_BIT),M.colorMask(!1,!1,!1,!1),M.depthMask(!0),M.depthFunc(M.LESS),R.enable&&R.isTransparent()&&R.drawTransparent(V);for(var a=0;a<r;++a){var l=z[a];l.isOpaque&&l.isOpaque()&&l.draw(V)}M.enable(M.BLEND),M.blendEquation(M.FUNC_ADD),M.blendFunc(M.ONE,M.ONE_MINUS_SRC_ALPHA),M.colorMask(!0,!0,!0,!0),M.depthMask(!1),M.clearColor(0,0,0,0),M.clear(M.COLOR_BUFFER_BIT),R.isTransparent()&&R.drawTransparent(V);for(var a=0;a<r;++a){var l=z[a];l.isTransparent&&l.isTransparent()&&l.drawTransparent(V)}M.bindFramebuffer(M.FRAMEBUFFER,null),M.blendFunc(M.ONE,M.ONE_MINUS_SRC_ALPHA),M.disable(M.DEPTH_TEST),L.bind(),E.color[0].bind(0),L.uniforms.accumBuffer=0,p(M),M.disable(M.BLEND)}D=!1;for(var a=0;a<r;++a)z[a].dirty=!1}}}function x(){_||H.contextLost||(requestAnimationFrame(x),b())}t=t||{};var _=!1,w=(t.pixelRatio||parseFloat(window.devicePixelRatio),t.canvas);if(!w)if(w=document.createElement("canvas"),t.container){var A=t.container;A.appendChild(w)}else document.body.appendChild(w);var M=t.gl;if(M||(M=i(w,t.glOptions||{premultipliedAlpha:!0,antialias:!0})),!M)throw new Error("webgl not supported");var k=t.bounds||[[-10,-10,-10],[10,10,10]],T=new n,E=d(M,[M.drawingBufferWidth,M.drawingBufferHeight],{preferFloat:!0}),L=m(M),S=t.camera||{eye:[2,0,0],center:[0,0,0],up:[0,1,0],zoomMin:.1,zoomMax:100,mode:"turntable"},C=t.axes||{},R=u(M,C);R.enable=!C.disable;var P=t.spikes||{},N=f(M,P),z=[],I=[],O=[],j=[],D=!0,F=!0,B=new Array(16),U=new Array(16),V={view:null,projection:B,model:U},F=!0,q=[M.drawingBufferWidth,M.drawingBufferHeight],H={gl:M,contextLost:!1,pixelRatio:t.pixelRatio||parseFloat(window.devicePixelRatio),canvas:w,selection:T,camera:l(w,S),axes:R,axesPixels:null,spikes:N,bounds:k,objects:z,shape:q,aspect:t.aspectRatio||[1,1,1],pickRadius:t.pickRadius||10,zNear:t.zNear||.01,zFar:t.zFar||1e3,fovy:t.fovy||Math.PI/4,clearColor:t.clearColor||[0,0,0,0],autoResize:a(t.autoResize),autoBounds:a(t.autoBounds),autoScale:!!t.autoScale,autoCenter:a(t.autoCenter),clipToBounds:a(t.clipToBounds),snapToData:!!t.snapToData,onselect:t.onselect||null,onrender:t.onrender||null,onclick:t.onclick||null,cameraParams:V,oncontextloss:null,mouseListener:null},G=[M.drawingBufferWidth/H.pixelRatio|0,M.drawingBufferHeight/H.pixelRatio|0];H.autoResize&&e(),window.addEventListener("resize",e),H.update=function(t){_||(t=t||{},D=!0,F=!0)},H.add=function(t){_||(t.axes=R,z.push(t),I.push(-1),D=!0,F=!0,r())},H.remove=function(t){if(!_){var e=z.indexOf(t);e<0||(z.splice(e,1),I.pop(),D=!0,F=!0,r())}},H.dispose=function(){if(!_&&(_=!0,window.removeEventListener("resize",e),w.removeEventListener("webglcontextlost",s),H.mouseListener.enabled=!1,!H.contextLost)){R.dispose(),N.dispose();for(var t=0;t<z.length;++t)z[t].dispose();E.dispose();for(var t=0;t<j.length;++t)j[t].dispose();L.dispose(),M=null,R=null,N=null,z=[]}};var X=!1,Y=0;H.mouseListener=g(w,function(t,e,r){if(!_){var n=j.length,i=z.length,o=T.object;T.distance=1/0,T.mouse[0]=e,T.mouse[1]=r,T.object=null,T.screen=null,T.dataCoordinate=T.dataPosition=null;var a=!1;if(t&&Y)X=!0;else{X&&(F=!0),X=!1;for(var s=0;s<n;++s){var l=j[s].query(e,G[1]-r-1,H.pickRadius);if(l){if(l.distance>T.distance)continue;for(var u=0;u<i;++u){var c=z[u];if(I[u]===s){var f=c.pick(l);f&&(T.buttons=t,T.screen=l.coord,T.distance=l.distance,T.object=c,T.index=f.distance,T.dataPosition=f.position,T.dataCoordinate=f.dataCoordinate,T.data=f,a=!0)}}}}}o&&o!==T.object&&(o.highlight&&o.highlight(null),D=!0),T.object&&(T.object.highlight&&T.object.highlight(T.data),D=!0),a=a||T.object!==o,a&&H.onselect&&H.onselect(T),1&t&&!(1&Y)&&H.onclick&&H.onclick(T),Y=t}}),w.addEventListener("webglcontextlost",s);var W=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],Z=[W[0].slice(),W[1].slice()];return x(),H.redraw=function(){_||(D=!0,b())},H}e.exports=s;var l=t("3d-view-controls"),u=t("gl-axes3d"),c=t("gl-axes3d/properties"),f=t("gl-spikes3d"),h=t("gl-select-static"),d=t("gl-fbo"),p=t("a-big-triangle"),g=t("mouse-change"),v=t("gl-mat4/perspective"),m=t("./lib/shader")},{"./lib/shader":126,"3d-view-controls":8,"a-big-triangle":10,"gl-axes3d":86,"gl-axes3d/properties":93,"gl-fbo":99,"gl-mat4/perspective":114,"gl-select-static":132,"gl-spikes3d":141,"mouse-change":177}],128:[function(t,e,r){function n(t,e,r,n){var i,o,a,s,l,u=e[0],c=e[1],f=e[2],h=e[3],d=r[0],p=r[1],g=r[2],v=r[3];return o=u*d+c*p+f*g+h*v,o<0&&(o=-o,d=-d,p=-p,g=-g,v=-v),1-o>1e-6?(i=Math.acos(o),a=Math.sin(i),s=Math.sin((1-n)*i)/a,l=Math.sin(n*i)/a):(s=1-n,l=n),t[0]=s*u+l*d,t[1]=s*c+l*p,t[2]=s*f+l*g,t[3]=s*h+l*v,t}e.exports=n},{}],129:[function(t,e,r){"use strict";function n(t,e){var r=o[e];if(r||(r=o[e]={}),t in r)return r[t];for(var n=i(t,{textAlign:"center",textBaseline:"middle",lineHeight:1,font:e}),a=i(t,{triangles:!0,textAlign:"center",textBaseline:"middle",lineHeight:1,font:e}),s=[[1/0,1/0],[-(1/0),-(1/0)]],l=0;l<n.positions.length;++l)for(var u=n.positions[l],c=0;c<2;++c)s[0][c]=Math.min(s[0][c],u[c]),s[1][c]=Math.max(s[1][c],u[c]);return r[t]=[a,n,s]}var i=t("vectorize-text");e.exports=n;var o={}},{"vectorize-text":249}],130:[function(t,e,r){function n(t,e){var r=i(t,e),n=r.attributes;return n.position.location=0,n.color.location=1,n.glyph.location=2,n.id.location=3,r}var i=t("gl-shader"),o="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\n\nuniform vec4 highlightId;\nuniform float highlightScale;\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   || \n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = 1.0;\n    if(distance(highlightId, id) < 0.0001) {\n      scale = highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1);\n    vec4 viewPosition = view * worldPosition;\n    viewPosition = viewPosition / viewPosition.w;\n    vec4 clipPosition = projection * (viewPosition + scale * vec4(glyph.x, -glyph.y, 0, 0));\n    \n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}",a="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float highlightScale, pixelRatio;\nuniform vec4 highlightId;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = pixelRatio;\n    if(distance(highlightId.bgr, id.bgr) < 0.001) {\n      scale *= highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1.0);\n    vec4 viewPosition = view * worldPosition;\n    vec4 clipPosition = projection * viewPosition;\n    clipPosition /= clipPosition.w;\n    \n    gl_Position = clipPosition + vec4(screenSize * scale * vec2(glyph.x, -glyph.y), 0.0, 0.0);\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}",s="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform float highlightScale;\nuniform vec4 highlightId;\nuniform vec3 axes[2];\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float scale, pixelRatio;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   ||\n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float lscale = pixelRatio * scale;\n    if(distance(highlightId, id) < 0.0001) {\n      lscale *= highlightScale;\n    }\n\n    vec4 clipCenter   = projection * view * model * vec4(position, 1);\n    vec3 dataPosition = position + 0.5*lscale*(axes[0] * glyph.x + axes[1] * glyph.y) * clipCenter.w * screenSize.y;\n    vec4 clipPosition = projection * view * model * vec4(dataPosition, 1);\n\n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = dataPosition;\n  }\n}\n",l="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float opacity;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   ||\n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = interpColor * opacity;\n  }\n}\n",u="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float pickGroup;\n\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   || \n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = vec4(pickGroup, pickId.bgr);\n  }\n}",c=[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"glyph",type:"vec2"},{name:"id",type:"vec4"}],f={vertex:o,fragment:l,attributes:c},h={vertex:a,fragment:l,attributes:c},d={vertex:s,fragment:l,attributes:c},p={vertex:o,fragment:u,attributes:c},g={vertex:a,fragment:u,attributes:c},v={vertex:s,fragment:u,attributes:c};r.createPerspective=function(t){return n(t,f)},r.createOrtho=function(t){return n(t,h)},r.createProject=function(t){return n(t,d)},r.createPickPerspective=function(t){return n(t,p)},r.createPickOrtho=function(t){return n(t,g)},r.createPickProject=function(t){return n(t,v)}},{"gl-shader":133}],131:[function(t,e,r){"use strict";function n(t,e){var r=t[0],n=t[1],i=t[2],o=t[3];return t[0]=e[0]*r+e[4]*n+e[8]*i+e[12]*o,t[1]=e[1]*r+e[5]*n+e[9]*i+e[13]*o,t[2]=e[2]*r+e[6]*n+e[10]*i+e[14]*o,t[3]=e[3]*r+e[7]*n+e[11]*i+e[15]*o,t}function i(t,e,r,i){return n(i,i,r),n(i,i,e),n(i,i,t)}function o(t,e){this.index=t,this.dataCoordinate=this.position=e}function a(t,e,r,n,i,a,s,l,u,c,f,h){this.gl=t,this.pixelRatio=1,this.shader=e,this.orthoShader=r,this.projectShader=n,this.pointBuffer=i,this.colorBuffer=a,this.glyphBuffer=s,this.idBuffer=l,this.vao=u,this.vertexCount=0,this.lineVertexCount=0,this.opacity=1,this.lineWidth=0,this.projectScale=[2/3,2/3,2/3],this.projectOpacity=[1,1,1],this.pickId=0,this.pickPerspectiveShader=c,this.pickOrthoShader=f,this.pickProjectShader=h,this.points=[],this._selectResult=new o(0,[0,0,0]),this.useOrtho=!0,this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.axesProject=[!0,!0,!0],this.axesBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.highlightId=[1,1,1,1],this.highlightScale=2,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.dirty=!0}function s(t){return t[0]=t[1]=t[2]=0,t}function l(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=1,t}function u(t,e,r,n){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[r]=n,t}function c(t){for(var e=S,r=0;r<2;++r)for(var n=0;n<3;++n)e[r][n]=Math.max(Math.min(t[r][n],1e8),-1e8);return e}function f(t,e,r,n,o){var a,f=e.axesProject,h=e.gl,d=t.uniforms,p=r.model||x,g=r.view||x,v=r.projection||x,y=e.axesBounds,b=c(e.clipBounds);a=e.axes?e.axes.lastCubeProps.axis:[1,1,1],w[0]=2/h.drawingBufferWidth,w[1]=2/h.drawingBufferHeight,t.bind(),d.view=g,d.projection=v,d.screenSize=w,d.highlightId=e.highlightId,d.highlightScale=e.highlightScale,d.clipBounds=b,d.pickGroup=e.pickId/255,d.pixelRatio=e.pixelRatio;for(var _=0;_<3;++_)if(f[_]&&e.projectOpacity[_]<1===n){d.scale=e.projectScale[_],d.opacity=e.projectOpacity[_];for(var S=E,C=0;C<16;++C)S[C]=0;for(var C=0;C<4;++C)S[5*C]=1;S[5*_]=0,a[_]<0?S[12+_]=y[0][_]:S[12+_]=y[1][_],m(S,p,S),d.model=S;var R=(_+1)%3,P=(_+2)%3,N=s(A),z=s(M);N[R]=1,z[P]=1;var I=i(v,g,p,l(k,N)),O=i(v,g,p,l(T,z));if(Math.abs(I[1])>Math.abs(O[1])){var j=I;I=O,O=j,j=N,N=z,z=j;var D=R;R=P,P=D}I[0]<0&&(N[R]=-1),O[1]>0&&(z[P]=-1);for(var F=0,B=0,C=0;C<4;++C)F+=Math.pow(p[4*R+C],2),B+=Math.pow(p[4*P+C],2);N[R]/=Math.sqrt(F),z[P]/=Math.sqrt(B),d.axes[0]=N,d.axes[1]=z,d.fragClipBounds[0]=u(L,b[0],_,-1e8),d.fragClipBounds[1]=u(L,b[1],_,1e8),e.vao.draw(h.TRIANGLES,e.vertexCount),e.lineWidth>0&&(h.lineWidth(e.lineWidth),e.vao.draw(h.LINES,e.lineVertexCount,e.vertexCount))}}function h(t,e,r,n,i,o){var a=r.gl;if(r.vao.bind(),i===r.opacity<1||o){t.bind();var s=t.uniforms;s.model=n.model||x,s.view=n.view||x,s.projection=n.projection||x,w[0]=2/a.drawingBufferWidth,w[1]=2/a.drawingBufferHeight,s.screenSize=w,s.highlightId=r.highlightId,s.highlightScale=r.highlightScale,s.fragClipBounds=P,s.clipBounds=r.axes.bounds,s.opacity=r.opacity,s.pickGroup=r.pickId/255,s.pixelRatio=r.pixelRatio,r.vao.draw(a.TRIANGLES,r.vertexCount),r.lineWidth>0&&(a.lineWidth(r.lineWidth),r.vao.draw(a.LINES,r.lineVertexCount,r.vertexCount))}f(e,r,n,i,o),r.vao.unbind()}function d(t){var e=t.gl,r=y.createPerspective(e),n=y.createOrtho(e),i=y.createProject(e),o=y.createPickPerspective(e),s=y.createPickOrtho(e),l=y.createPickProject(e),u=p(e),c=p(e),f=p(e),h=p(e),d=g(e,[{buffer:u,size:3,type:e.FLOAT},{buffer:c,size:4,type:e.FLOAT},{buffer:f,size:2,type:e.FLOAT},{buffer:h,size:4,type:e.UNSIGNED_BYTE,normalized:!0}]),v=new a(e,r,n,i,u,c,f,h,d,o,s,l);return v.update(t),v}var p=t("gl-buffer"),g=t("gl-vao"),v=t("typedarray-pool"),m=t("gl-mat4/multiply"),y=t("./lib/shaders"),b=t("./lib/glyphs"),x=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1];e.exports=d;var _=a.prototype;_.pickSlots=1,_.setPickBase=function(t){this.pickId=t},_.isTransparent=function(){if(this.opacity<1)return!0;for(var t=0;t<3;++t)if(this.axesProject[t]&&this.projectOpacity[t]<1)return!0;return!1},_.isOpaque=function(){if(this.opacity>=1)return!0;for(var t=0;t<3;++t)if(this.axesProject[t]&&this.projectOpacity[t]>=1)return!0;return!1};var w=[0,0],A=[0,0,0],M=[0,0,0],k=[0,0,0,1],T=[0,0,0,1],E=x.slice(),L=[0,0,0],S=[[0,0,0],[0,0,0]],C=[-1e8,-1e8,-1e8],R=[1e8,1e8,1e8],P=[C,R];_.draw=function(t){var e=this.useOrtho?this.orthoShader:this.shader;h(e,this.projectShader,this,t,!1,!1)},_.drawTransparent=function(t){var e=this.useOrtho?this.orthoShader:this.shader;h(e,this.projectShader,this,t,!0,!1)},_.drawPick=function(t){var e=this.useOrtho?this.pickOrthoShader:this.pickPerspectiveShader;h(e,this.pickProjectShader,this,t,!1,!0)},_.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=t.value[2]+(t.value[1]<<8)+(t.value[0]<<16);if(e>=this.pointCount||e<0)return null;var r=this.points[e],n=this._selectResult;n.index=e;for(var i=0;i<3;++i)n.position[i]=n.dataCoordinate[i]=r[i];return n},_.highlight=function(t){if(t){var e=t.index,r=255&e,n=e>>8&255,i=e>>16&255;this.highlightId=[r/255,n/255,i/255,0]}else this.highlightId=[1,1,1,1]},_.update=function(t){if(t=t||{},"perspective"in 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l=["gl","v"],u=[],c=0;c<o;++c)l.push("x"+c),u.push("x"+c);l.push("if(x0.length===void 0){return gl.vertexAttrib"+o+"f(v,"+u.join()+")}else{return gl.vertexAttrib"+o+"fv(v,x0)}");var f=Function.apply(null,l),h=new n(t,e,r,i,o,f);Object.defineProperty(a,s,{set:function(e){return t.disableVertexAttribArray(i[r]),f(t,i[r],e),e},get:function(){return h},enumerable:!0})}function o(t,e,r,n,o,a,s){for(var l=new Array(o),u=new Array(o),c=0;c<o;++c)i(t,e,r[c],n,o,l,c),u[c]=l[c];Object.defineProperty(l,"location",{set:function(t){if(Array.isArray(t))for(var e=0;e<o;++e)u[e].location=t[e];else for(var e=0;e<o;++e)u[e].location=t+e;return t},get:function(){for(var t=new Array(o),e=0;e<o;++e)t[e]=n[r[e]];return t},enumerable:!0}),l.pointer=function(e,i,a,s){e=e||t.FLOAT,i=!!i,a=a||o*o,s=s||0;for(var l=0;l<o;++l){var u=n[r[l]];t.vertexAttribPointer(u,o,e,i,a,s+l*o),t.enableVertexAttribArray(u)}};var f=new Array(o),h=t["vertexAttrib"+o+"fv"];Object.defineProperty(a,s,{set:function(e){for(var 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l=o(t,i),u=a(t,[{type:t.FLOAT,buffer:l,size:3,offset:0,stride:28},{type:t.FLOAT,buffer:l,size:3,offset:12,stride:28},{type:t.FLOAT,buffer:l,size:1,offset:24,stride:28}]),c=s(t);c.attributes.position.location=0,c.attributes.color.location=1,c.attributes.weight.location=2;var f=new n(t,l,u,c);return f.update(e),f}var o=t("gl-buffer"),a=t("gl-vao"),s=t("./shaders/index");e.exports=i;var l=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],u=n.prototype,c=[0,0,0],f=[0,0,0],h=[0,0];u.isTransparent=function(){return!1},u.drawTransparent=function(t){},u.draw=function(t){var e=this.gl,r=this.vao,n=this.shader;r.bind(),n.bind();var i,o=t.model||l,a=t.view||l,s=t.projection||l;this.axes&&(i=this.axes.lastCubeProps.axis);for(var 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float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute vec3 f;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection, inverseModel;\nuniform vec3 lightPosition, eyePosition;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  worldCoordinate = vec3(uv.zw, f.x);\n  vec4 worldPosition = model * vec4(worldCoordinate, 1.0);\n  vec4 clipPosition = projection * view * worldPosition;\n  gl_Position = clipPosition;\n  kill = f.y;\n  value = f.z;\n  planeCoordinate = uv.xy;\n\n  //Lighting geometry parameters\n  vec4 cameraCoordinate = view * worldPosition;\n  cameraCoordinate.xyz /= cameraCoordinate.w;\n  lightDirection = lightPosition - cameraCoordinate.xyz;\n  eyeDirection   = eyePosition - cameraCoordinate.xyz;\n  surfaceNormal  = normalize((vec4(normal,0) * inverseModel).xyz);\n}\n",o="precision mediump float;\n#define GLSLIFY 1\n\nfloat 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surfaceNormal;\n\nvoid main() {\n  vec3 dataCoordinate = permutation * vec3(uv.xy, height);\n  vec4 worldPosition = model * vec4(dataCoordinate, 1.0);\n\n  vec4 clipPosition = projection * view * worldPosition;\n  clipPosition.z = clipPosition.z + zOffset;\n\n  gl_Position = clipPosition;\n  value = f;\n  kill = -1.0;\n  worldCoordinate = dataCoordinate;\n  planeCoordinate = uv.zw;\n\n  //Don't do lighting for contours\n  surfaceNormal   = vec3(1,0,0);\n  eyeDirection    = vec3(0,1,0);\n  lightDirection  = vec3(0,0,1);\n}\n",s="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec2 shape;\nuniform vec3 clipBounds[2];\nuniform float pickId;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 surfaceNormal;\n\nvec2 splitFloat(float v) {\n  float vh = 255.0 * v;\n  float upper = floor(vh);\n  float lower = fract(vh);\n  return vec2(upper / 255.0, floor(lower * 16.0) / 16.0);\n}\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n  vec2 ux = splitFloat(planeCoordinate.x / shape.x);\n  vec2 uy = splitFloat(planeCoordinate.y / shape.y);\n  gl_FragColor = vec4(pickId, ux.x, uy.x, ux.y + (uy.y/16.0));\n}\n";r.createShader=function(t){var e=n(t,i,o,null,[{name:"uv",type:"vec4"},{name:"f",type:"vec3"},{name:"normal",type:"vec3"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e.attributes.normal.location=2,e},r.createPickShader=function(t){var e=n(t,i,s,null,[{name:"uv",type:"vec4"},{name:"f",type:"vec3"},{name:"normal",type:"vec3"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e.attributes.normal.location=2,e},r.createContourShader=function(t){var e=n(t,a,o,null,[{name:"uv",type:"vec4"},{name:"f",type:"float"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e},r.createPickContourShader=function(t){var e=n(t,a,s,null,[{name:"uv",type:"vec4"},{name:"f",type:"float"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e}},{"gl-shader":133}],143:[function(t,e,r){"use strict";function n(t,e,r,n,i){this.position=t,this.index=e,this.uv=r,this.level=n,this.dataCoordinate=i}function i(t){var e=x([y({colormap:t,nshades:O,format:"rgba"}).map(function(t){return[t[0],t[1],t[2],255*t[3]]})]);return b.divseq(e,255),e}function o(t,e,r,i,o,a,s,l,u,c,f,h,d,p){this.gl=t,this.shape=e,this.bounds=r,this.intensityBounds=[],this._shader=i,this._pickShader=o,this._coordinateBuffer=a,this._vao=s,this._colorMap=l,this._contourShader=u,this._contourPickShader=c,this._contourBuffer=f,this._contourVAO=h,this._contourOffsets=[[],[],[]],this._contourCounts=[[],[],[]],this._vertexCount=0,this._pickResult=new n([0,0,0],[0,0],[0,0],[0,0,0],[0,0,0]),this._dynamicBuffer=d,this._dynamicVAO=p,this._dynamicOffsets=[0,0,0],this._dynamicCounts=[0,0,0],this.contourWidth=[1,1,1],this.contourLevels=[[1],[1],[1]],this.contourTint=[0,0,0],this.contourColor=[[.5,.5,.5,1],[.5,.5,.5,1],[.5,.5,.5,1]],this.showContour=!0,this.showSurface=!0,this.enableHighlight=[!0,!0,!0],this.highlightColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.highlightTint=[1,1,1],this.highlightLevel=[-1,-1,-1],this.enableDynamic=[!0,!0,!0],this.dynamicLevel=[NaN,NaN,NaN],this.dynamicColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.dynamicTint=[1,1,1],this.dynamicWidth=[1,1,1],this.axesBounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.surfaceProject=[!1,!1,!1],this.contourProject=[[!1,!1,!1],[!1,!1,!1],[!1,!1,!1]],this.colorBounds=[!1,!1],this._field=[_(m.mallocFloat(1024),[0,0]),_(m.mallocFloat(1024),[0,0]),_(m.mallocFloat(1024),[0,0])],this.pickId=1,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.snapToData=!1,this.opacity=1,this.lightPosition=[10,1e4,0],this.ambientLight=.8,this.diffuseLight=.8,this.specularLight=2,this.roughness=.5,this.fresnel=1.5,this.dirty=!0}function 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o=n.clipBounds[i],s=0;s<3;++s)o[s]=Math.min(Math.max(this.clipBounds[i][s],-1e8),1e8);n.kambient=this.ambientLight,n.kdiffuse=this.diffuseLight,n.kspecular=this.specularLight,n.roughness=this.roughness,n.fresnel=this.fresnel,n.opacity=this.opacity,n.height=0,n.permutation=V;var l=U;for(A(l,n.view,n.model),A(l,n.projection,l),M(l,l),i=0;i<3;++i)n.eyePosition[i]=l[12+i]/l[15];var u=l[15];for(i=0;i<3;++i)u+=this.lightPosition[i]*l[4*i+3];for(i=0;i<3;++i){var c=l[12+i];for(s=0;s<3;++s)c+=l[4*s+i]*this.lightPosition[s];n.lightPosition[i]=c/u}var f=a(n,this);if(f.showSurface&&e===this.opacity<1){for(this._shader.bind(),this._shader.uniforms=n,this._vao.bind(),this.showSurface&&this._vertexCount&&this._vao.draw(r.TRIANGLES,this._vertexCount),i=0;i<3;++i)this.surfaceProject[i]&&this.vertexCount&&(this._shader.uniforms.model=f.projections[i],this._shader.uniforms.clipBounds=f.clipBounds[i],this._vao.draw(r.TRIANGLES,this._vertexCount));this._vao.unbind()}if(f.showContour&&!e){var h=this._contourShader;n.kambient=1,n.kdiffuse=0,n.kspecular=0,n.opacity=1,h.bind(),h.uniforms=n;var d=this._contourVAO;for(d.bind(),i=0;i<3;++i)for(h.uniforms.permutation=I[i],r.lineWidth(this.contourWidth[i]),s=0;s<this.contourLevels[i].length;++s)this._contourCounts[i][s]&&(s===this.highlightLevel[i]?(h.uniforms.contourColor=this.highlightColor[i],h.uniforms.contourTint=this.highlightTint[i]):0!==s&&s-1!==this.highlightLevel[i]||(h.uniforms.contourColor=this.contourColor[i],h.uniforms.contourTint=this.contourTint[i]),h.uniforms.height=this.contourLevels[i][s],d.draw(r.LINES,this._contourCounts[i][s],this._contourOffsets[i][s]));for(i=0;i<3;++i)for(h.uniforms.model=f.projections[i],h.uniforms.clipBounds=f.clipBounds[i],s=0;s<3;++s)if(this.contourProject[i][s]){h.uniforms.permutation=I[s],r.lineWidth(this.contourWidth[s]);for(var p=0;p<this.contourLevels[s].length;++p)p===this.highlightLevel[s]?(h.uniforms.contourColor=this.highlightColor[s],h.uniforms.contourTint=this.highlightTint[s]):0!==p&&p-1!==this.highlightLevel[s]||(h.uniforms.contourColor=this.contourColor[s],h.uniforms.contourTint=this.contourTint[s]),h.uniforms.height=this.contourLevels[s][p],d.draw(r.LINES,this._contourCounts[s][p],this._contourOffsets[s][p])}for(d=this._dynamicVAO,d.bind(),i=0;i<3;++i)if(0!==this._dynamicCounts[i])for(h.uniforms.model=n.model,h.uniforms.clipBounds=n.clipBounds,h.uniforms.permutation=I[i],r.lineWidth(this.dynamicWidth[i]),h.uniforms.contourColor=this.dynamicColor[i],h.uniforms.contourTint=this.dynamicTint[i],h.uniforms.height=this.dynamicLevel[i],d.draw(r.LINES,this._dynamicCounts[i],this._dynamicOffsets[i]),s=0;s<3;++s)this.contourProject[s][i]&&(h.uniforms.model=f.projections[s],h.uniforms.clipBounds=f.clipBounds[s],d.draw(r.LINES,this._dynamicCounts[i],this._dynamicOffsets[i]));d.unbind()}}function l(t,e){var r=e.shape.slice(),n=t.shape.slice();b.assign(t.lo(1,1).hi(r[0],r[1]),e),b.assign(t.lo(1).hi(r[0],1),e.hi(r[0],1)),b.assign(t.lo(1,n[1]-1).hi(r[0],1),e.lo(0,r[1]-1).hi(r[0],1)),b.assign(t.lo(0,1).hi(1,r[1]),e.hi(1)),b.assign(t.lo(n[0]-1,1).hi(1,r[1]),e.lo(r[0]-1)),t.set(0,0,e.get(0,0)),t.set(0,n[1]-1,e.get(0,r[1]-1)),t.set(n[0]-1,0,e.get(r[0]-1,0)),t.set(n[0]-1,n[1]-1,e.get(r[0]-1,r[1]-1))}function u(t,e){return Array.isArray(t)?[e(t[0]),e(t[1]),e(t[2])]:[e(t),e(t),e(t)]}function c(t){return Array.isArray(t)?3===t.length?[t[0],t[1],t[2],1]:[t[0],t[1],t[2],t[3]]:[0,0,0,1]}function f(t){if(Array.isArray(t)){if(Array.isArray(t))return[c(t[0]),c(t[1]),c(t[2])];var e=c(t);return[e.slice(),e.slice(),e.slice()]}}function h(t){var e=t.gl,r=L(e),n=C(e),i=S(e),a=R(e),s=p(e),l=g(e,[{buffer:s,size:4,stride:P,offset:0},{buffer:s,size:3,stride:P,offset:16},{buffer:s,size:3,stride:P,offset:28}]),u=p(e),c=g(e,[{buffer:u,size:4,stride:20,offset:0},{buffer:u,size:1,stride:20,offset:16}]),f=p(e),h=g(e,[{buffer:f,size:2,type:e.FLOAT}]),d=v(e,1,O,e.RGBA,e.UNSIGNED_BYTE);d.minFilter=e.LINEAR,d.magFilter=e.LINEAR;var m=new o(e,[0,0],[[0,0,0],[0,0,0]],r,n,s,l,d,i,a,u,c,f,h),y={levels:[[],[],[]]};for(var b in t)y[b]=t[b];return y.colormap=y.colormap||"jet",m.update(y),m}e.exports=h;var d=t("bit-twiddle"),p=t("gl-buffer"),g=t("gl-vao"),v=t("gl-texture2d"),m=t("typedarray-pool"),y=t("colormap"),b=t("ndarray-ops"),x=t("ndarray-pack"),_=t("ndarray"),w=t("surface-nets"),A=t("gl-mat4/multiply"),M=t("gl-mat4/invert"),k=t("binary-search-bounds"),T=t("ndarray-gradient"),E=t("./lib/shaders"),L=E.createShader,S=E.createContourShader,C=E.createPickShader,R=E.createPickContourShader,P=40,N=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],z=[[0,0],[0,1],[1,0],[1,1],[1,0],[0,1]],I=[[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0]];!function(){for(var t=0;t<3;++t){var e=I[t],r=(t+1)%3,n=(t+2)%3;e[r+0]=1,e[n+3]=1,e[t+6]=1}}();var O=265,j=o.prototype;j.isTransparent=function(){return this.opacity<1},j.isOpaque=function(){if(this.opacity>=1)return!0;for(var t=0;t<3;++t)if(this._contourCounts[t].length>0||this._dynamicCounts[t]>0)return!0;return!1},j.pickSlots=1,j.setPickBase=function(t){this.pickId=t};var D=[0,0,0],F={showSurface:!1,showContour:!1,projections:[N.slice(),N.slice(),N.slice()],clipBounds:[[[0,0,0],[0,0,0]],[[0,0,0],[0,0,0]],[[0,0,0],[0,0,0]]]},B={model:N,view:N,projection:N,inverseModel:N.slice(),lowerBound:[0,0,0],upperBound:[0,0,0],colorMap:0,clipBounds:[[0,0,0],[0,0,0]],height:0,contourTint:0,contourColor:[0,0,0,1],permutation:[1,0,0,0,1,0,0,0,1],zOffset:-1e-4,kambient:1,kdiffuse:1,kspecular:1,lightPosition:[1e3,1e3,1e3],eyePosition:[0,0,0],roughness:1,fresnel:1,opacity:1},U=N.slice(),V=[1,0,0,0,1,0,0,0,1];j.draw=function(t){return s.call(this,t,!1)},j.drawTransparent=function(t){return s.call(this,t,!0)};var q={model:N,view:N,projection:N,inverseModel:N,clipBounds:[[0,0,0],[0,0,0]],height:0,shape:[0,0],pickId:0,lowerBound:[0,0,0],upperBound:[0,0,0],zOffset:0,permutation:[1,0,0,0,1,0,0,0,1],lightPosition:[0,0,0],eyePosition:[0,0,0]};j.drawPick=function(t){t=t||{};var e=this.gl;e.disable(e.CULL_FACE);var r=q;r.model=t.model||N,r.view=t.view||N,r.projection=t.projection||N,r.shape=this._field[2].shape,r.pickId=this.pickId/255,r.lowerBound=this.bounds[0],r.upperBound=this.bounds[1],r.permutation=V;for(var n=0;n<2;++n)for(var i=r.clipBounds[n],o=0;o<3;++o)i[o]=Math.min(Math.max(this.clipBounds[n][o],-1e8),1e8);var s=a(r,this);if(s.showSurface){for(this._pickShader.bind(),this._pickShader.uniforms=r,this._vao.bind(),this._vao.draw(e.TRIANGLES,this._vertexCount),n=0;n<3;++n)this.surfaceProject[n]&&(this._pickShader.uniforms.model=s.projections[n],this._pickShader.uniforms.clipBounds=s.clipBounds[n],this._vao.draw(e.TRIANGLES,this._vertexCount));this._vao.unbind()}if(s.showContour){var l=this._contourPickShader;l.bind(),l.uniforms=r;var u=this._contourVAO;for(u.bind(),o=0;o<3;++o)for(e.lineWidth(this.contourWidth[o]),l.uniforms.permutation=I[o],n=0;n<this.contourLevels[o].length;++n)this._contourCounts[o][n]&&(l.uniforms.height=this.contourLevels[o][n],u.draw(e.LINES,this._contourCounts[o][n],this._contourOffsets[o][n]));for(n=0;n<3;++n)for(l.uniforms.model=s.projections[n],l.uniforms.clipBounds=s.clipBounds[n],o=0;o<3;++o)if(this.contourProject[n][o]){l.uniforms.permutation=I[o],e.lineWidth(this.contourWidth[o]);for(var c=0;c<this.contourLevels[o].length;++c)this._contourCounts[o][c]&&(l.uniforms.height=this.contourLevels[o][c],u.draw(e.LINES,this._contourCounts[o][c],this._contourOffsets[o][c]))}u.unbind()}},j.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=this._field[2].shape,r=this._pickResult,n=e[0]*(t.value[0]+(t.value[2]>>4)/16)/255,i=Math.floor(n),o=n-i,a=e[1]*(t.value[1]+(15&t.value[2])/16)/255,s=Math.floor(a),l=a-s;i+=1,s+=1;var u=r.position;u[0]=u[1]=u[2]=0;for(var c=0;c<2;++c)for(var f=c?o:1-o,h=0;h<2;++h)for(var d=h?l:1-l,p=i+c,g=s+h,v=f*d,m=0;m<3;++m)u[m]+=this._field[m].get(p,g)*v;for(var y=this._pickResult.level,b=0;b<3;++b)if(y[b]=k.le(this.contourLevels[b],u[b]),y[b]<0)this.contourLevels[b].length>0&&(y[b]=0);else if(y[b]<this.contourLevels[b].length-1){var x=this.contourLevels[b][y[b]],_=this.contourLevels[b][y[b]+1];Math.abs(x-u[b])>Math.abs(_-u[b])&&(y[b]+=1)}for(r.index[0]=o<.5?i:i+1,r.index[1]=l<.5?s:s+1,r.uv[0]=n/e[0],r.uv[1]=a/e[1],m=0;m<3;++m)r.dataCoordinate[m]=this._field[m].get(r.index[0],r.index[1]);return r},j.update=function(t){t=t||{},this.dirty=!0,"contourWidth"in t&&(this.contourWidth=u(t.contourWidth,Number)),"showContour"in t&&(this.showContour=u(t.showContour,Boolean)),"showSurface"in t&&(this.showSurface=!!t.showSurface),"contourTint"in t&&(this.contourTint=u(t.contourTint,Boolean)),"contourColor"in t&&(this.contourColor=f(t.contourColor)),"contourProject"in t&&(this.contourProject=u(t.contourProject,function(t){return u(t,Boolean)})),"surfaceProject"in t&&(this.surfaceProject=t.surfaceProject),"dynamicColor"in t&&(this.dynamicColor=f(t.dynamicColor)),"dynamicTint"in t&&(this.dynamicTint=u(t.dynamicTint,Number)),"dynamicWidth"in t&&(this.dynamicWidth=u(t.dynamicWidth,Number)),"opacity"in t&&(this.opacity=t.opacity),"colorBounds"in t&&(this.colorBounds=t.colorBounds);var e=t.field||t.coords&&t.coords[2]||null,r=!1;if(e||(e=this._field[2].shape[0]||this._field[2].shape[2]?this._field[2].lo(1,1).hi(this._field[2].shape[0]-2,this._field[2].shape[1]-2):this._field[2].hi(0,0)),"field"in t||"coords"in t){var n=(e.shape[0]+2)*(e.shape[1]+2);n>this._field[2].data.length&&(m.freeFloat(this._field[2].data),this._field[2].data=m.mallocFloat(d.nextPow2(n))),this._field[2]=_(this._field[2].data,[e.shape[0]+2,e.shape[1]+2]),l(this._field[2],e),this.shape=e.shape.slice();for(var o=this.shape,a=0;a<2;++a)this._field[2].size>this._field[a].data.length&&(m.freeFloat(this._field[a].data),this._field[a].data=m.mallocFloat(this._field[2].size)),this._field[a]=_(this._field[a].data,[o[0]+2,o[1]+2]);if(t.coords){var s=t.coords;if(!Array.isArray(s)||3!==s.length)throw new Error("gl-surface: invalid coordinates for x/y");for(a=0;a<2;++a){var c=s[a];for(y=0;y<2;++y)if(c.shape[y]!==o[y])throw new Error("gl-surface: coords have incorrect shape");l(this._field[a],c)}}else if(t.ticks){var h=t.ticks;if(!Array.isArray(h)||2!==h.length)throw new Error("gl-surface: invalid ticks");for(a=0;a<2;++a){var p=h[a];if((Array.isArray(p)||p.length)&&(p=_(p)),p.shape[0]!==o[a])throw new Error("gl-surface: invalid tick length");var g=_(p.data,o);g.stride[a]=p.stride[0],g.stride[1^a]=0,l(this._field[a],g)}}else{for(a=0;a<2;++a){var v=[0,0];v[a]=1,this._field[a]=_(this._field[a].data,[o[0]+2,o[1]+2],v,0)}this._field[0].set(0,0,0);for(var y=0;y<o[0];++y)this._field[0].set(y+1,0,y);for(this._field[0].set(o[0]+1,0,o[0]-1),this._field[1].set(0,0,0),y=0;y<o[1];++y)this._field[1].set(0,y+1,y);this._field[1].set(0,o[1]+1,o[1]-1)}var b=this._field,x=_(m.mallocFloat(3*b[2].size*2),[3,o[0]+2,o[1]+2,2]);for(a=0;a<3;++a)T(x.pick(a),b[a],"mirror");var A=_(m.mallocFloat(3*b[2].size),[o[0]+2,o[1]+2,3]);for(a=0;a<o[0]+2;++a)for(y=0;y<o[1]+2;++y){var M=x.get(0,a,y,0),k=x.get(0,a,y,1),E=x.get(1,a,y,0),L=x.get(1,a,y,1),S=x.get(2,a,y,0),C=x.get(2,a,y,1),R=E*C-L*S,P=S*k-C*M,N=M*L-k*E,I=Math.sqrt(R*R+P*P+N*N);I<1e-8?(I=Math.max(Math.abs(R),Math.abs(P),Math.abs(N)),I<1e-8?(N=1,P=R=0,I=1):I=1/I):I=1/Math.sqrt(I),A.set(a,y,0,R*I),A.set(a,y,1,P*I),A.set(a,y,2,N*I)}m.free(x.data);var O=[1/0,1/0,1/0],j=[-(1/0),-(1/0),-(1/0)],D=1/0,F=-(1/0),B=(o[0]-1)*(o[1]-1)*6,U=m.mallocFloat(d.nextPow2(10*B)),V=0,q=0;for(a=0;a<o[0]-1;++a)t:for(y=0;y<o[1]-1;++y){for(var H=0;H<2;++H)for(var G=0;G<2;++G)for(var X=0;X<3;++X){var Y=this._field[X].get(1+a+H,1+y+G);if(isNaN(Y)||!isFinite(Y))continue t}for(X=0;X<6;++X){var W=a+z[X][0],Z=y+z[X][1],Q=this._field[0].get(W+1,Z+1),$=this._field[1].get(W+1,Z+1);Y=this._field[2].get(W+1,Z+1);var K=Y;R=A.get(W+1,Z+1,0),P=A.get(W+1,Z+1,1),N=A.get(W+1,Z+1,2),t.intensity&&(K=t.intensity.get(W,Z)),U[V++]=W,U[V++]=Z,U[V++]=Q,U[V++]=$,U[V++]=Y,U[V++]=0,U[V++]=K,U[V++]=R,U[V++]=P,U[V++]=N,O[0]=Math.min(O[0],Q),O[1]=Math.min(O[1],$),O[2]=Math.min(O[2],Y),D=Math.min(D,K),j[0]=Math.max(j[0],Q),j[1]=Math.max(j[1],$),j[2]=Math.max(j[2],Y),F=Math.max(F,K),q+=1}}for(t.intensityBounds&&(D=+t.intensityBounds[0],F=+t.intensityBounds[1]),a=6;a<V;a+=10)U[a]=(U[a]-D)/(F-D);this._vertexCount=q,this._coordinateBuffer.update(U.subarray(0,V)),m.freeFloat(U),m.free(A.data),this.bounds=[O,j],this.intensity=t.intensity||this._field[2],this.intensityBounds[0]===D&&this.intensityBounds[1]===F||(r=!0),this.intensityBounds=[D,F]}if("levels"in t){var J=t.levels;for(J=Array.isArray(J[0])?J.slice():[[],[],J],a=0;a<3;++a)J[a]=J[a].slice(),J.sort(function(t,e){return t-e});t:for(a=0;a<3;++a){if(J[a].length!==this.contourLevels[a].length){r=!0;break}for(y=0;y<J[a].length;++y)if(J[a][y]!==this.contourLevels[a][y]){r=!0;break t}}this.contourLevels=J}if(r){b=this._field,o=this.shape;for(var tt=[],et=0;et<3;++et){J=this.contourLevels[et];var rt=[],nt=[],it=[0,0,0];for(a=0;a<J.length;++a){var ot=w(this._field[et],J[a]);rt.push(tt.length/5|0),q=0;t:for(y=0;y<ot.cells.length;++y){var at=ot.cells[y];for(X=0;X<2;++X){var st=ot.positions[at[X]],lt=st[0],ut=0|Math.floor(lt),ct=lt-ut,ft=st[1],ht=0|Math.floor(ft),dt=ft-ht,pt=!1;e:for(var gt=0;gt<3;++gt){it[gt]=0;var vt=(et+gt+1)%3;for(H=0;H<2;++H){var mt=H?ct:1-ct;for(W=0|Math.min(Math.max(ut+H,0),o[0]),G=0;G<2;++G){var yt=G?dt:1-dt;if(Z=0|Math.min(Math.max(ht+G,0),o[1]),Y=gt<2?this._field[vt].get(W,Z):(this.intensity.get(W,Z)-this.intensityBounds[0])/(this.intensityBounds[1]-this.intensityBounds[0]),!isFinite(Y)||isNaN(Y)){pt=!0;break e}var bt=mt*yt;it[gt]+=bt*Y}}}if(pt){if(X>0){for(var xt=0;xt<5;++xt)tt.pop();q-=1}continue t}tt.push(it[0],it[1],st[0],st[1],it[2]),q+=1}}nt.push(q)}this._contourOffsets[et]=rt,this._contourCounts[et]=nt}var _t=m.mallocFloat(tt.length);for(a=0;a<tt.length;++a)_t[a]=tt[a];this._contourBuffer.update(_t),m.freeFloat(_t)}t.colormap&&this._colorMap.setPixels(i(t.colormap))},j.dispose=function(){this._shader.dispose(),this._vao.dispose(),this._coordinateBuffer.dispose(),this._colorMap.dispose(),this._contourBuffer.dispose(),this._contourVAO.dispose(),this._contourShader.dispose(),this._contourPickShader.dispose(),this._dynamicBuffer.dispose(),this._dynamicVAO.dispose();for(var t=0;t<3;++t)m.freeFloat(this._field[t].data)},j.highlight=function(t){if(!t)return this._dynamicCounts=[0,0,0],this.dyanamicLevel=[NaN,NaN,NaN],void(this.highlightLevel=[-1,-1,-1]);for(var e=0;e<3;++e)this.enableHighlight[e]?this.highlightLevel[e]=t.level[e]:this.highlightLevel[e]=-1;var r;if(r=this.snapToData?t.dataCoordinate:t.position,this.enableDynamic[0]&&r[0]!==this.dynamicLevel[0]||this.enableDynamic[1]&&r[1]!==this.dynamicLevel[1]||this.enableDynamic[2]&&r[2]!==this.dynamicLevel[2]){for(var n=0,i=this.shape,o=m.mallocFloat(12*i[0]*i[1]),a=0;a<3;++a)if(this.enableDynamic[a]){this.dynamicLevel[a]=r[a];var s=(a+1)%3,l=(a+2)%3,u=this._field[a],c=this._field[s],f=this._field[l],h=(this.intensity,w(u,r[a])),d=h.cells,p=h.positions;for(this._dynamicOffsets[a]=n,e=0;e<d.length;++e)for(var g=d[e],v=0;v<2;++v){var y=p[g[v]],b=+y[0],x=0|b,_=0|Math.min(x+1,i[0]),A=b-x,M=1-A,k=+y[1],T=0|k,E=0|Math.min(T+1,i[1]),L=k-T,S=1-L,C=M*S,R=M*L,P=A*S,N=A*L,z=C*c.get(x,T)+R*c.get(x,E)+P*c.get(_,T)+N*c.get(_,E),I=C*f.get(x,T)+R*f.get(x,E)+P*f.get(_,T)+N*f.get(_,E);if(isNaN(z)||isNaN(I)){v&&(n-=1);break}o[2*n+0]=z,o[2*n+1]=I,n+=1}this._dynamicCounts[a]=n-this._dynamicOffsets[a]}else this.dynamicLevel[a]=NaN,this._dynamicCounts[a]=0;this._dynamicBuffer.update(o.subarray(0,2*n)),m.freeFloat(o)}}},{"./lib/shaders":142,"binary-search-bounds":34,"bit-twiddle":35,colormap:61,"gl-buffer":94,"gl-mat4/invert":111,"gl-mat4/multiply":113,"gl-texture2d":144,"gl-vao":148,ndarray:191,"ndarray-gradient":182,"ndarray-ops":185,"ndarray-pack":186,"surface-nets":239,"typedarray-pool":246}],144:[function(t,e,r){"use strict";function n(t){v=[t.LINEAR,t.NEAREST_MIPMAP_LINEAR,t.LINEAR_MIPMAP_NEAREST,t.LINEAR_MIPMAP_NEAREST],
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t.bindTexture(t.TEXTURE_2D,e),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.NEAREST),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.NEAREST),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),e}function u(t,e,r,n,i){var a=t.getParameter(t.MAX_TEXTURE_SIZE);if(e<0||e>a||r<0||r>a)throw new Error("gl-texture2d: Invalid texture shape");if(i===t.FLOAT&&!t.getExtension("OES_texture_float"))throw new Error("gl-texture2d: Floating point textures not supported on this platform");var s=l(t);return t.texImage2D(t.TEXTURE_2D,0,n,e,r,0,n,i,null),new o(t,s,e,r,n,i)}function c(t,e,r,n){var i=l(t);return t.texImage2D(t.TEXTURE_2D,0,r,r,n,e),new o(t,i,0|e.width,0|e.height,r,n)}function f(t,e){var r=e.dtype,n=e.shape.slice(),i=t.getParameter(t.MAX_TEXTURE_SIZE);if(n[0]<0||n[0]>i||n[1]<0||n[1]>i)throw new Error("gl-texture2d: Invalid texture size");var s=a(n,e.stride.slice()),u=0;"float32"===r?u=t.FLOAT:"float64"===r?(u=t.FLOAT,s=!1,r="float32"):"uint8"===r?u=t.UNSIGNED_BYTE:(u=t.UNSIGNED_BYTE,s=!1,r="uint8");var c=0;if(2===n.length)c=t.LUMINANCE,n=[n[0],n[1],1],e=d(e.data,n,[e.stride[0],e.stride[1],1],e.offset);else{if(3!==n.length)throw new Error("gl-texture2d: Invalid shape for texture");if(1===n[2])c=t.ALPHA;else if(2===n[2])c=t.LUMINANCE_ALPHA;else if(3===n[2])c=t.RGB;else{if(4!==n[2])throw new Error("gl-texture2d: Invalid shape for pixel coords");c=t.RGBA}}u!==t.FLOAT||t.getExtension("OES_texture_float")||(u=t.UNSIGNED_BYTE,s=!1);var f,h,v=e.size;if(s)f=0===e.offset&&e.data.length===v?e.data:e.data.subarray(e.offset,e.offset+v);else{var m=[n[2],n[2]*n[0],1];h=g.malloc(v,r);var y=d(h,n,m,0);"float32"!==r&&"float64"!==r||u!==t.UNSIGNED_BYTE?p.assign(y,e):b(y,e),f=h.subarray(0,v)}var x=l(t);return t.texImage2D(t.TEXTURE_2D,0,c,n[0],n[1],0,c,u,f),s||g.free(h),new o(t,x,n[0],n[1],c,u)}function h(t){if(arguments.length<=1)throw new 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e=this.gl;if(this.type===e.FLOAT&&v.indexOf(t)>=0&&(e.getExtension("OES_texture_float_linear")||(t=e.NEAREST)),m.indexOf(t)<0)throw new Error("gl-texture2d: Unknown filter mode "+t);return e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MIN_FILTER,t),this._minFilter=t}},magFilter:{get:function(){return this._magFilter},set:function(t){this.bind();var e=this.gl;if(this.type===e.FLOAT&&v.indexOf(t)>=0&&(e.getExtension("OES_texture_float_linear")||(t=e.NEAREST)),m.indexOf(t)<0)throw new Error("gl-texture2d: Unknown filter mode "+t);return e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MAG_FILTER,t),this._magFilter=t}},mipSamples:{get:function(){return this._anisoSamples},set:function(t){var e=this._anisoSamples;if(this._anisoSamples=0|Math.max(t,1),e!==this._anisoSamples){var r=this.gl.getExtension("EXT_texture_filter_anisotropic");r&&this.gl.texParameterf(this.gl.TEXTURE_2D,r.TEXTURE_MAX_ANISOTROPY_EXT,this._anisoSamples)}return this._anisoSamples}},wrapS:{get:function(){return this._wrapS},set:function(t){if(this.bind(),y.indexOf(t)<0)throw new Error("gl-texture2d: Unknown wrap mode "+t);return this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_WRAP_S,t),this._wrapS=t}},wrapT:{get:function(){return this._wrapT},set:function(t){if(this.bind(),y.indexOf(t)<0)throw new Error("gl-texture2d: Unknown wrap mode "+t);return this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_WRAP_T,t),this._wrapT=t}},wrap:{get:function(){return this._wrapVector},set:function(t){if(Array.isArray(t)||(t=[t,t]),2!==t.length)throw new Error("gl-texture2d: Must specify wrap mode for rows and columns");for(var e=0;e<2;++e)if(y.indexOf(t[e])<0)throw new Error("gl-texture2d: Unknown wrap mode "+t);this._wrapS=t[0],this._wrapT=t[1];var r=this.gl;return this.bind(),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_WRAP_S,this._wrapS),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_WRAP_T,this._wrapT),t}},shape:{get:function(){return this._shapeVector},set:function(t){if(Array.isArray(t)){if(2!==t.length)throw new Error("gl-texture2d: Invalid texture shape")}else t=[0|t,0|t];return i(this,0|t[0],0|t[1]),[0|t[0],0|t[1]]}},width:{get:function(){return this._shape[0]},set:function(t){return t=0|t,i(this,t,this._shape[1]),t}},height:{get:function(){return this._shape[1]},set:function(t){return t=0|t,i(this,this._shape[0],t),t}}}),x.bind=function(t){var e=this.gl;return void 0!==t&&e.activeTexture(e.TEXTURE0+(0|t)),e.bindTexture(e.TEXTURE_2D,this.handle),void 0!==t?0|t:e.getParameter(e.ACTIVE_TEXTURE)-e.TEXTURE0},x.dispose=function(){this.gl.deleteTexture(this.handle)},x.generateMipmap=function(){this.bind(),this.gl.generateMipmap(this.gl.TEXTURE_2D);for(var t=Math.min(this._shape[0],this._shape[1]),e=0;t>0;++e,t>>>=1)this._mipLevels.indexOf(e)<0&&this._mipLevels.push(e)},x.setPixels=function(t,e,r,n){var i=this.gl;if(this.bind(),Array.isArray(e)?(n=r,r=0|e[1],e=0|e[0]):(e=e||0,r=r||0),n=n||0,t instanceof HTMLCanvasElement||t instanceof ImageData||t instanceof HTMLImageElement||t instanceof HTMLVideoElement){var o=this._mipLevels.indexOf(n)<0;o?(i.texImage2D(i.TEXTURE_2D,0,this.format,this.format,this.type,t),this._mipLevels.push(n)):i.texSubImage2D(i.TEXTURE_2D,n,e,r,this.format,this.type,t)}else{if(!(t.shape&&t.stride&&t.data))throw new Error("gl-texture2d: Unsupported data type");if(t.shape.length<2||e+t.shape[1]>this._shape[1]>>>n||r+t.shape[0]>this._shape[0]>>>n||e<0||r<0)throw new Error("gl-texture2d: Texture dimensions are out of bounds");s(i,e,r,n,this.format,this.type,this._mipLevels,t)}}},{ndarray:191,"ndarray-ops":185,"typedarray-pool":246}],145:[function(t,e,r){"use strict";function n(t,e,r){e?e.bind():t.bindBuffer(t.ELEMENT_ARRAY_BUFFER,null);var n=0|t.getParameter(t.MAX_VERTEX_ATTRIBS);if(r){if(r.length>n)throw new Error("gl-vao: Too many vertex attributes");for(var i=0;i<r.length;++i){var o=r[i];if(o.buffer){var 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d=Math.exp(this.computedRadius[0]),p=this.computedAngle[0],g=this.computedAngle[1],v=Math.cos(p),m=Math.sin(p),y=Math.cos(g),b=Math.sin(g),x=this.computedCenter,_=v*y,w=m*y,A=b,M=-v*b,k=-m*b,T=y,E=this.computedEye,L=this.computedMatrix,a=0;a<3;++a){var S=_*r[a]+w*c[a]+A*e[a];L[4*a+1]=M*r[a]+k*c[a]+T*e[a],L[4*a+2]=S,L[4*a+3]=0}var C=L[1],R=L[5],P=L[9],N=L[2],z=L[6],I=L[10],O=R*I-P*z,j=P*N-C*I,D=C*z-R*N,F=n(O,j,D);O/=F,j/=F,D/=F,L[0]=O,L[4]=j,L[8]=D;for(var a=0;a<3;++a)E[a]=x[a]+L[2+4*a]*d;for(var a=0;a<3;++a){for(var l=0,B=0;B<3;++B)l+=L[a+4*B]*E[B];L[12+a]=-l}L[15]=1},p.getMatrix=function(t,e){this.recalcMatrix(t);var r=this.computedMatrix;if(e){for(var n=0;n<16;++n)e[n]=r[n];return e}return r};var g=[0,0,0];p.rotate=function(t,e,r,n){if(this.angle.move(t,e,r),n){this.recalcMatrix(t);var i=this.computedMatrix;g[0]=i[2],g[1]=i[6],g[2]=i[10];for(var o=this.computedUp,a=this.computedRight,s=this.computedToward,l=0;l<3;++l)i[4*l]=o[l],i[4*l+1]=a[l],i[4*l+2]=s[l];c(i,i,n,g);for(var l=0;l<3;++l)o[l]=i[4*l],a[l]=i[4*l+1];this.up.set(t,o[0],o[1],o[2]),this.right.set(t,a[0],a[1],a[2])}},p.pan=function(t,e,r,i){e=e||0,r=r||0,i=i||0,this.recalcMatrix(t);var o=this.computedMatrix,a=(Math.exp(this.computedRadius[0]),o[1]),s=o[5],l=o[9],u=n(a,s,l);a/=u,s/=u,l/=u;var c=o[0],f=o[4],h=o[8],d=c*a+f*s+h*l;c-=a*d,f-=s*d,h-=l*d;var p=n(c,f,h);c/=p,f/=p,h/=p;var g=c*e+a*r,v=f*e+s*r,m=h*e+l*r;this.center.move(t,g,v,m);var y=Math.exp(this.computedRadius[0]);y=Math.max(1e-4,y+i),this.radius.set(t,Math.log(y))},p.translate=function(t,e,r,n){this.center.move(t,e||0,r||0,n||0)},p.setMatrix=function(t,e,r,o){var a=1;"number"==typeof r&&(a=0|r),(a<0||a>3)&&(a=1);var s=(a+2)%3;e||(this.recalcMatrix(t),e=this.computedMatrix);var l=e[a],c=e[a+4],f=e[a+8];if(o){var h=Math.abs(l),d=Math.abs(c),p=Math.abs(f),g=Math.max(h,d,p);h===g?(l=l<0?-1:1,c=f=0):p===g?(f=f<0?-1:1,l=c=0):(c=c<0?-1:1,l=f=0)}else{var v=n(l,c,f);l/=v,c/=v,f/=v}var 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o=t("arraytools"),a=t("../../../lib/html2unicode"),s=t("../../../lib/str2rgbarray"),l=o.copy1D,u=["xaxis","yaxis","zaxis"],c=n.prototype;c.merge=function(t){for(var e=this,r=0;r<3;++r){var n=t[u[r]];e.labels[r]=a(n.title),"titlefont"in n&&(n.titlefont.color&&(e.labelColor[r]=s(n.titlefont.color)),n.titlefont.family&&(e.labelFont[r]=n.titlefont.family),n.titlefont.size&&(e.labelSize[r]=n.titlefont.size)),"showline"in n&&(e.lineEnable[r]=n.showline),"linecolor"in n&&(e.lineColor[r]=s(n.linecolor)),"linewidth"in n&&(e.lineWidth[r]=n.linewidth),"showgrid"in n&&(e.gridEnable[r]=n.showgrid),"gridcolor"in n&&(e.gridColor[r]=s(n.gridcolor)),"gridwidth"in n&&(e.gridWidth[r]=n.gridwidth),"log"===n.type?e.zeroEnable[r]=!1:"zeroline"in n&&(e.zeroEnable[r]=n.zeroline),"zerolinecolor"in n&&(e.zeroLineColor[r]=s(n.zerolinecolor)),"zerolinewidth"in n&&(e.zeroLineWidth[r]=n.zerolinewidth),"ticks"in n&&n.ticks?e.lineTickEnable[r]=!0:e.lineTickEnable[r]=!1,"ticklen"in n&&(e.lineTickLength[r]=e._defaultLineTickLength[r]=n.ticklen),"tickcolor"in n&&(e.lineTickColor[r]=s(n.tickcolor)),"tickwidth"in n&&(e.lineTickWidth[r]=n.tickwidth),"tickangle"in n&&(e.tickAngle[r]="auto"===n.tickangle?0:Math.PI*-n.tickangle/180),"showticklabels"in n&&(e.tickEnable[r]=n.showticklabels),"tickfont"in n&&(n.tickfont.color&&(e.tickColor[r]=s(n.tickfont.color)),n.tickfont.family&&(e.tickFont[r]=n.tickfont.family),n.tickfont.size&&(e.tickSize[r]=n.tickfont.size)),"mirror"in n?["ticks","all","allticks"].indexOf(n.mirror)!==-1?(e.lineTickMirror[r]=!0,e.lineMirror[r]=!0):n.mirror===!0?(e.lineTickMirror[r]=!1,e.lineMirror[r]=!0):(e.lineTickMirror[r]=!1,e.lineMirror[r]=!1):e.lineMirror[r]=!1,"showbackground"in n&&n.showbackground!==!1?(e.backgroundEnable[r]=!0,e.backgroundColor[r]=s(n.backgroundcolor)):e.backgroundEnable[r]=!1}},e.exports=i},{"../../../lib/html2unicode":340,"../../../lib/str2rgbarray":353,arraytools:15}],389:[function(t,e,r){"use strict";function n(t,e,r,n){for(var o=r("bgcolor"),l=i.combine(o,n.paper_bgcolor),u=Object.keys(a.camera),c=0;c<u.length;c++)r("camera."+u[c]+".x"),r("camera."+u[c]+".y"),r("camera."+u[c]+".z");var f=!!r("aspectratio.x")&&!!r("aspectratio.y")&&!!r("aspectratio.z"),h=f?"manual":"auto",d=r("aspectmode",h);f||(t.aspectratio=e.aspectratio={x:1,y:1,z:1},"manual"===d&&(e.aspectmode="auto")),s(t,e,{font:n.font,scene:n.id,data:n.fullData,bgColor:l}),r("dragmode",n.getDfltFromLayout("dragmode")),r("hovermode",n.getDfltFromLayout("hovermode"))}var i=t("../../../components/color"),o=t("../../subplot_defaults"),a=t("./layout_attributes"),s=t("./axis_defaults");e.exports=function(t,e,r){function i(e){if(!s){var r=a[e].values.indexOf(t[e])!==-1;return r?t[e]:void 0}}var s=e._has("cartesian")||e._has("geo")||e._has("gl2d")||e._has("pie")||e._has("ternary");o(t,e,r,{type:"gl3d",attributes:a,handleDefaults:n,font:e.font,fullData:r,getDfltFromLayout:i,paper_bgcolor:e.paper_bgcolor})}},{"../../../components/color":261,"../../subplot_defaults":403,"./axis_defaults":387,"./layout_attributes":390}],390:[function(t,e,r){"use strict";function n(t,e,r){return{x:{valType:"number",dflt:t},y:{valType:"number",dflt:e},z:{valType:"number",dflt:r}}}var i=t("./axis_attributes"),o=t("../../../lib/extend").extendFlat;e.exports={bgcolor:{valType:"color",dflt:"rgba(0,0,0,0)"},camera:{up:o(n(0,0,1),{}),center:o(n(0,0,0),{}),eye:o(n(1.25,1.25,1.25),{})},domain:{x:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]},y:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]}},aspectmode:{valType:"enumerated",values:["auto","cube","data","manual"],dflt:"auto"},aspectratio:{x:{valType:"number",min:0},y:{valType:"number",min:0},z:{valType:"number",min:0}},xaxis:i,yaxis:i,zaxis:i,dragmode:{valType:"enumerated",values:["orbit","turntable","zoom","pan"],dflt:"turntable"},hovermode:{valType:"enumerated",values:["closest",!1],dflt:"closest"},_deprecated:{cameraposition:{valType:"info_array"}}}},{"../../../lib/extend":338,"./axis_attributes":386}],391:[function(t,e,r){"use strict";function n(){this.enabled=[!0,!0,!0],this.colors=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.drawSides=[!0,!0,!0],this.lineWidth=[1,1,1]}function i(t){var e=new n;return e.merge(t),e}var o=t("../../../lib/str2rgbarray"),a=["xaxis","yaxis","zaxis"],s=n.prototype;s.merge=function(t){for(var e=0;e<3;++e){var r=t[a[e]];this.enabled[e]=r.showspikes,this.colors[e]=o(r.spikecolor),this.drawSides[e]=r.spikesides,this.lineWidth[e]=r.spikethickness}},e.exports=i},{"../../../lib/str2rgbarray":353}],392:[function(t,e,r){"use strict";function n(t){for(var e=new Array(3),r=0;r<3;++r){for(var n=t[r],i=new Array(n.length),o=0;o<n.length;++o)i[o]=n[o].x;e[r]=i}return e}function i(t){for(var e=t.axesOptions,r=t.glplot.axesPixels,i=t.fullSceneLayout,u=[[],[],[]],c=0;c<3;++c){var f=i[s[c]];if(f._length=(r[c].hi-r[c].lo)*r[c].pixelsPerDataUnit/t.dataScale[c],Math.abs(f._length)===1/0)u[c]=[];else{f.range[0]=r[c].lo/t.dataScale[c],f.range[1]=r[c].hi/t.dataScale[c],f._m=1/(t.dataScale[c]*r[c].pixelsPerDataUnit),f.range[0]===f.range[1]&&(f.range[0]-=1,f.range[1]+=1);var h=f.tickmode;if("auto"===f.tickmode){f.tickmode="linear";var d=f.nticks||o.Lib.constrain(f._length/40,4,9);o.Axes.autoTicks(f,Math.abs(f.range[1]-f.range[0])/d)}for(var p=o.Axes.calcTicks(f),g=0;g<p.length;++g)p[g].x=p[g].x*t.dataScale[c],p[g].text=a(p[g].text);u[c]=p,f.tickmode=h}}e.ticks=u;for(var c=0;c<3;++c){l[c]=.5*(t.glplot.bounds[0][c]+t.glplot.bounds[1][c]);for(var g=0;g<2;++g)e.bounds[g][c]=t.glplot.bounds[g][c]}t.contourLevels=n(u)}e.exports=i;var o=t("../../../plotly"),a=t("../../../lib/html2unicode"),s=["xaxis","yaxis","zaxis"],l=[0,0,0]},{"../../../lib/html2unicode":340,"../../../plotly":361}],393:[function(t,e,r){"use strict";function n(t,e){var r,n,i=[0,0,0,0];for(r=0;r<4;++r)for(n=0;n<4;++n)i[n]+=t[4*r+n]*e[r];return i}function i(t,e){var r=n(t.projection,n(t.view,n(t.model,[e[0],e[1],e[2],1])));return r}e.exports=i},{}],394:[function(t,e,r){"use strict";function n(t){function e(e,r){if("string"==typeof r)return r;var n=t.fullSceneLayout[e];return g.tickText(n,n.c2l(r),"hover").text}var r,n=t.svgContainer,i=t.container.getBoundingClientRect(),o=i.width,a=i.height;n.setAttributeNS(null,"viewBox","0 0 "+o+" "+a),n.setAttributeNS(null,"width",o),n.setAttributeNS(null,"height",a),M(t),t.glplot.axes.update(t.axesOptions);for(var s=Object.keys(t.traces),l=null,u=t.glplot.selection,c=0;c<s.length;++c)r=t.traces[s[c]],r.handlePick(u)&&(l=r),r.setContourLevels&&r.setContourLevels();var f;if(null!==l){var h=x(t.glplot.cameraParams,u.dataCoordinate);r=l.data;var d=r.hoverinfo,p=e("xaxis",u.traceCoordinate[0]),m=e("yaxis",u.traceCoordinate[1]),y=e("zaxis",u.traceCoordinate[2]);if("all"!==d){var b=d.split("+");b.indexOf("x")===-1&&(p=void 0),b.indexOf("y")===-1&&(m=void 0),b.indexOf("z")===-1&&(y=void 0),b.indexOf("text")===-1&&(u.textLabel=void 0),b.indexOf("name")===-1&&(l.name=void 0)}t.fullSceneLayout.hovermode&&v.loneHover({x:(.5+.5*h[0]/h[3])*o,y:(.5-.5*h[1]/h[3])*a,xLabel:p,yLabel:m,zLabel:y,text:u.textLabel,name:l.name,color:l.color},{container:n});var _={points:[{x:p,y:m,z:y,data:r._input,fullData:r,curveNumber:r.index,pointNumber:u.data.index}]};u.buttons&&u.distance<5?t.graphDiv.emit("plotly_click",_):t.graphDiv.emit("plotly_hover",_),f=_}else v.loneUnhover(n),t.graphDiv.emit("plotly_unhover",f)}function i(t,e,r,i){var o={canvas:r,gl:i,container:t.container,axes:t.axesOptions,spikes:t.spikeOptions,pickRadius:10,snapToData:!0,autoScale:!0,autoBounds:!1};if(t.staticMode){if(!f){c=document.createElement("canvas");try{f=c.getContext("webgl",{preserveDrawingBuffer:!0,premultipliedAlpha:!0,antialias:!0})}catch(t){throw new Error("error creating static canvas/context for image server")}}o.pixelRatio=t.pixelRatio,o.gl=f,o.canvas=c}try{t.glplot=h(o)}catch(e){y(t)}var a=function(t){var e={};e[t.id]=u(t.camera),t.saveCamera(t.graphDiv.layout),t.graphDiv.emit("plotly_relayout",e)};if(t.glplot.canvas.addEventListener("mouseup",a.bind(null,t)),t.glplot.canvas.addEventListener("wheel",a.bind(null,t)),t.staticMode||t.glplot.canvas.addEventListener("webglcontextlost",function(t){d.warn("Lost WebGL context."),t.preventDefault()}),!t.camera){var s=t.fullSceneLayout.camera;t.camera=b(t.container,{center:[s.center.x,s.center.y,s.center.z],eye:[s.eye.x,s.eye.y,s.eye.z],up:[s.up.x,s.up.y,s.up.z],zoomMin:.1,zoomMax:100,mode:"orbit"})}return t.glplot.mouseListener.enabled=!1,t.glplot.camera=t.camera,t.glplot.oncontextloss=function(){t.recoverContext()},t.glplot.onrender=n.bind(null,t),t.traces={},!0}function o(t,e){var r=document.createElement("div"),n=t.container;this.graphDiv=t.graphDiv;var o=document.createElementNS("http://www.w3.org/2000/svg","svg");o.style.position="absolute",o.style.top=o.style.left="0px",o.style.width=o.style.height="100%",o.style["z-index"]=20,o.style["pointer-events"]="none",r.appendChild(o),this.svgContainer=o,r.id=t.id,r.style.position="absolute",r.style.top=r.style.left="0px",r.style.width=r.style.height="100%",n.appendChild(r),this.fullLayout=e,this.id=t.id||"scene",this.fullSceneLayout=e[this.id],this.plotArgs=[[],{},{}],this.axesOptions=w(e[this.id]),this.spikeOptions=A(e[this.id]),this.container=r,this.staticMode=!!t.staticPlot,this.pixelRatio=t.plotGlPixelRatio||2,this.dataScale=[1,1,1],this.contourLevels=[[],[],[]],!i(this,e)}function a(t,e,r,n){for(var i,o=0;o<e.length;++o)if(Array.isArray(e[o]))for(var a=0;a<e[o].length;++a)i=t.d2l(e[o][a]),!isNaN(i)&&isFinite(i)&&(n[0][r]=Math.min(n[0][r],i),n[1][r]=Math.max(n[1][r],i));else i=t.d2l(e[o]),!isNaN(i)&&isFinite(i)&&(n[0][r]=Math.min(n[0][r],i),n[1][r]=Math.max(n[1][r],i))}function s(t,e,r){var n=t.fullSceneLayout;a(n.xaxis,e.x,0,r),a(n.yaxis,e.y,1,r),a(n.zaxis,e.z,2,r)}function l(t){return[[t.eye.x,t.eye.y,t.eye.z],[t.center.x,t.center.y,t.center.z],[t.up.x,t.up.y,t.up.z]]}function u(t){return{up:{x:t.up[0],y:t.up[1],z:t.up[2]},center:{x:t.center[0],y:t.center[1],z:t.center[2]},eye:{x:t.eye[0],y:t.eye[1],z:t.eye[2]}}}var c,f,h=t("gl-plot3d"),d=t("../../lib"),p=t("../../plots/plots"),g=t("../../plots/cartesian/axes"),v=t("../../plots/cartesian/graph_interact"),m=t("../../lib/str2rgbarray"),y=t("../../lib/show_no_webgl_msg"),b=t("./camera"),x=t("./project"),_=t("./set_convert"),w=t("./layout/convert"),A=t("./layout/spikes"),M=t("./layout/tick_marks"),k=o.prototype;k.recoverContext=function(){function t(){return r.isContextLost()?void requestAnimationFrame(t):i(e,e.fullLayout,n,r)?void e.plot.apply(e,e.plotArgs):void d.error("Catastrophic and unrecoverable WebGL error. Context lost.")}var e=this,r=this.glplot.gl,n=this.glplot.canvas;this.glplot.dispose(),requestAnimationFrame(t)};var T=["xaxis","yaxis","zaxis"];k.plot=function(t,e,r){if(this.plotArgs=[t,e,r],!this.glplot.contextLost){var n,i,o,a,l,u,c=e[this.id],f=r[this.id];for(c.bgcolor?this.glplot.clearColor=m(c.bgcolor):this.glplot.clearColor=[0,0,0,0],this.glplot.snapToData=!0,this.fullSceneLayout=c,this.glplotLayout=c,this.axesOptions.merge(c),this.spikeOptions.merge(c),this.updateFx(c.dragmode,c.hovermode),this.glplot.update({}),o=0;o<3;++o)l=c[T[o]],_(l);t?Array.isArray(t)||(t=[t]):t=[];var h=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]];for(o=0;o<t.length;++o)n=t[o],n.visible===!0&&s(this,n,h);var d=[1,1,1];for(a=0;a<3;++a)h[0][a]>h[1][a]?d[a]=1:h[1][a]===h[0][a]?d[a]=1:d[a]=1/(h[1][a]-h[0][a]);for(this.dataScale=d,o=0;o<t.length;++o)if(n=t[o],n.visible===!0){if(i=this.traces[n.uid])i.update(n);else{var g=p.getModule(n.type);i=g.plot(this,n),this.traces[n.uid]=i}i.name=n.name}var v=Object.keys(this.traces);t:for(o=0;o<v.length;++o){for(a=0;a<t.length;++a)if(t[a].uid===v[o]&&t[a].visible===!0)continue t;i=this.traces[v[o]],i.dispose(),delete this.traces[v[o]]}var y=[[0,0,0],[0,0,0]],b=[],x={};for(o=0;o<3;++o){if(l=c[T[o]],u=l.type,u in x?(x[u].acc*=d[o],x[u].count+=1):x[u]={acc:d[o],count:1},l.autorange){for(y[0][o]=1/0,y[1][o]=-(1/0),a=0;a<this.glplot.objects.length;++a){var w=this.glplot.objects[a].bounds;y[0][o]=Math.min(y[0][o],w[0][o]/d[o]),y[1][o]=Math.max(y[1][o],w[1][o]/d[o])}if("rangemode"in l&&"tozero"===l.rangemode&&(y[0][o]=Math.min(y[0][o],0),y[1][o]=Math.max(y[1][o],0)),y[0][o]>y[1][o])y[0][o]=-1,y[1][o]=1;else{var A=y[1][o]-y[0][o];y[0][o]-=A/32,y[1][o]+=A/32}}else{var M=c[T[o]].range;y[0][o]=M[0],y[1][o]=M[1]}y[0][o]===y[1][o]&&(y[0][o]-=1,y[1][o]+=1),b[o]=y[1][o]-y[0][o],this.glplot.bounds[0][o]=y[0][o]*d[o],this.glplot.bounds[1][o]=y[1][o]*d[o]}var k=[1,1,1];for(o=0;o<3;++o){l=c[T[o]],u=l.type;var E=x[u];k[o]=Math.pow(E.acc,1/E.count)/d[o]}var L,S=4;if("auto"===c.aspectmode)L=Math.max.apply(null,k)/Math.min.apply(null,k)<=S?k:[1,1,1];else if("cube"===c.aspectmode)L=[1,1,1];else if("data"===c.aspectmode)L=k;else{if("manual"!==c.aspectmode)throw new Error("scene.js aspectRatio was not one of the enumerated types");var C=c.aspectratio;L=[C.x,C.y,C.z]}c.aspectratio.x=f.aspectratio.x=L[0],c.aspectratio.y=f.aspectratio.y=L[1],c.aspectratio.z=f.aspectratio.z=L[2],this.glplot.aspect=L;var R=c.domain||null,P=e._size||null;if(R&&P){var N=this.container.style;N.position="absolute",N.left=P.l+R.x[0]*P.w+"px",N.top=P.t+(1-R.y[1])*P.h+"px",N.width=P.w*(R.x[1]-R.x[0])+"px",N.height=P.h*(R.y[1]-R.y[0])+"px"}this.glplot.redraw()}},k.destroy=function(){this.glplot.dispose(),this.container.parentNode.removeChild(this.container),this.glplot=null},k.setCameraToDefault=function(){this.setCamera({eye:{x:1.25,y:1.25,z:1.25},center:{x:0,y:0,z:0},up:{x:0,y:0,z:1}})},k.getCamera=function(){return this.glplot.camera.view.recalcMatrix(this.camera.view.lastT()),u(this.glplot.camera)},k.setCamera=function(t){var e={};e[this.id]=t,this.glplot.camera.lookAt.apply(this,l(t)),this.graphDiv.emit("plotly_relayout",e)},k.saveCamera=function(t){function e(t,e,r,n){var i=["up","center","eye"],o=["x","y","z"];return e[i[r]]&&t[i[r]][o[n]]===e[i[r]][o[n]]}var r=this.getCamera(),n=d.nestedProperty(t,this.id+".camera"),i=n.get(),o=!1;if(void 0===i)o=!0;else for(var a=0;a<3;a++)for(var s=0;s<3;s++)if(!e(r,i,a,s)){o=!0;break}return o&&n.set(r),o},k.updateFx=function(t,e){var r=this.camera;r&&("orbit"===t?(r.mode="orbit",r.keyBindingMode="rotate"):"turntable"===t?(r.up=[0,0,1],r.mode="turntable",r.keyBindingMode="rotate"):r.keyBindingMode=t),this.fullSceneLayout.hovermode=e},k.toImage=function(t){t||(t="png"),this.staticMode&&this.container.appendChild(c),this.glplot.redraw();var e=this.glplot.gl,r=e.drawingBufferWidth,n=e.drawingBufferHeight;e.bindFramebuffer(e.FRAMEBUFFER,null);var i=new 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n=t("../../lib");e.exports=function(t){var e=t[0].trace,r=e.marker;if(n.mergeArray(e.text,t,"tx"),n.mergeArray(e.textposition,t,"tp"),e.textfont&&(n.mergeArray(e.textfont.size,t,"ts"),n.mergeArray(e.textfont.color,t,"tc"),n.mergeArray(e.textfont.family,t,"tf")),r&&r.line){var i=r.line;n.mergeArray(r.opacity,t,"mo"),n.mergeArray(r.symbol,t,"mx"),n.mergeArray(r.color,t,"mc"),n.mergeArray(i.color,t,"mlc"),n.mergeArray(i.width,t,"mlw")}}},{"../../lib":341}],418:[function(t,e,r){"use strict";var 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n=t("../../lib"),i=t("./attributes"),o=t("./constants"),a=t("./subtypes"),s=t("./xy_defaults"),l=t("./marker_defaults"),u=t("./line_defaults"),c=t("./line_shape_defaults"),f=t("./text_defaults"),h=t("./fillcolor_defaults"),d=t("../../components/errorbars/defaults");e.exports=function(t,e,r,p){function g(r,o){return n.coerce(t,e,i,r,o)}var v=s(t,e,g),m=v<o.PTS_LINESONLY?"lines+markers":"lines";if(!v)return void(e.visible=!1);g("text"),g("mode",m),a.hasLines(e)&&(u(t,e,r,p,g),c(t,e,g),g("connectgaps")),a.hasMarkers(e)&&l(t,e,r,p,g),a.hasText(e)&&f(t,e,p,g);var 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r,o;if("lines"===t.mode)return r=t.line.color,r&&n.opacity(r)?r:t.fillcolor;if("none"===t.mode)return t.fill?t.fillcolor:"";var a=e.mcc||(t.marker||{}).color,s=e.mlcc||((t.marker||{}).line||{}).color;return o=a&&n.opacity(a)?a:s&&n.opacity(s)&&(e.mlw||((t.marker||{}).line||{}).width)?s:"",o?n.opacity(o)<.3?n.addOpacity(o,.3):o:(r=(t.line||{}).color,r&&n.opacity(r)&&i.hasLines(t)&&t.line.width?r:t.fillcolor)}},{"../../components/color":261,"./subtypes":437}],427:[function(t,e,r){"use strict";var n=t("../../lib"),i=t("../../plots/cartesian/graph_interact"),o=t("../../plots/cartesian/constants"),a=t("../../components/errorbars"),s=t("./get_trace_color"),l=t("../../components/color");e.exports=function(t,e,r,u){var c=t.cd,f=c[0].trace,h=t.xa,d=t.ya,p=h.c2p(e),g=d.c2p(r),v=[p,g];if(f.hoveron.indexOf("points")!==-1){var m=function(t){var e=Math.max(3,t.mrc||0);return Math.max(Math.abs(h.c2p(t.x)-p)-e,1-3/e)},y=function(t){var e=Math.max(3,t.mrc||0);return Math.max(Math.abs(d.c2p(t.y)-g)-e,1-3/e)},b=function(t){var e=Math.max(3,t.mrc||0),r=h.c2p(t.x)-p,n=d.c2p(t.y)-g;return Math.max(Math.sqrt(r*r+n*n)-e,1-3/e)},x=i.getDistanceFunction(u,m,y,b);if(i.getClosest(c,x,t),t.index!==!1){var _=c[t.index],w=h.c2p(_.x,!0),A=d.c2p(_.y,!0),M=_.mrc||1;return n.extendFlat(t,{color:s(f,_),x0:w-M,x1:w+M,xLabelVal:_.x,y0:A-M,y1:A+M,yLabelVal:_.y}),_.tx?t.text=_.tx:f.text&&(t.text=f.text),a.hoverInfo(_,f,t),[t]}}if(f.hoveron.indexOf("fills")!==-1&&f._polygons){var k,T,E,L,S,C,R,P,N,z=f._polygons,I=[],O=!1,j=1/0,D=-(1/0),F=1/0,B=-(1/0);for(k=0;k<z.length;k++)E=z[k],E.contains(v)&&(O=!O,I.push(E),F=Math.min(F,E.ymin),B=Math.max(B,E.ymax));if(O){F=Math.max(F,0),B=Math.min(B,d._length);var U=(F+B)/2;for(k=0;k<I.length;k++)for(L=I[k].pts,T=1;T<L.length;T++)P=L[T-1][1],N=L[T][1],P>U!=N>=U&&(C=L[T-1][0],R=L[T][0],S=C+(R-C)*(U-P)/(N-P),j=Math.min(j,S),D=Math.max(D,S));j=Math.max(j,0),D=Math.min(D,h._length);var V=l.defaultLine;return l.opacity(f.fillcolor)?V=f.fillcolor:l.opacity((f.line||{}).color)&&(V=f.line.color),n.extendFlat(t,{distance:o.MAXDIST+10,x0:j,x1:D,y0:U,y1:U,color:V}),delete t.index,f.text&&!Array.isArray(f.text)?t.text=String(f.text):t.text=f.name,[t]}}}},{"../../components/color":261,"../../components/errorbars":290,"../../lib":341,"../../plots/cartesian/constants":369,"../../plots/cartesian/graph_interact":371,"./get_trace_color":426}],428:[function(t,e,r){"use strict";var n={},i=t("./subtypes");n.hasLines=i.hasLines,n.hasMarkers=i.hasMarkers,n.hasText=i.hasText,n.isBubble=i.isBubble,n.attributes=t("./attributes"),n.supplyDefaults=t("./defaults"),n.cleanData=t("./clean_data"),n.calc=t("./calc"),n.arraysToCalcdata=t("./arrays_to_calcdata"),n.plot=t("./plot"),n.colorbar=t("./colorbar"),n.style=t("./style"),n.hoverPoints=t("./hover"),n.selectPoints=t("./select"),n.moduleType="trace",n.name="scatter",n.basePlotModule=t("../../plots/cartesian"),n.categories=["cartesian","symbols","markerColorscale","errorBarsOK","showLegend"],n.meta={},e.exports=n},{"../../plots/cartesian":372,"./arrays_to_calcdata":417,"./attributes":418,"./calc":419,"./clean_data":420,"./colorbar":421,"./defaults":424,"./hover":427,"./plot":434,"./select":435,"./style":436,"./subtypes":437}],429:[function(t,e,r){"use strict";var n=t("../../components/colorscale/has_colorscale"),i=t("../../components/colorscale/defaults");e.exports=function(t,e,r,o,a){var 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u=t.opacity;if(t.marker&&t.marker.opacity&&(u*=t.marker.opacity),r={gl:a,position:l.position,color:l.scatterColor,size:l.scatterSize,glyph:l.scatterMarker,opacity:u,orthographic:!0,lineWidth:l.scatterLineWidth,lineColor:l.scatterLineColor,project:l.project,projectScale:l.projectScale,projectOpacity:l.projectOpacity},this.mode.indexOf("markers")!==-1?this.scatterPlot?this.scatterPlot.update(r):(this.scatterPlot=p(r),this.scatterPlot.highlightScale=1,this.scene.glplot.add(this.scatterPlot)):this.scatterPlot&&(this.scene.glplot.remove(this.scatterPlot),this.scatterPlot.dispose(),this.scatterPlot=null),o={gl:a,position:l.position,glyph:l.text,color:l.textColor,size:l.textSize,angle:l.textAngle,alignment:l.textOffset,font:l.textFont,orthographic:!0,lineWidth:0,project:!1,opacity:t.opacity},this.textLabels=l.text,this.mode.indexOf("text")!==-1?this.textMarkers?this.textMarkers.update(o):(this.textMarkers=p(o),this.textMarkers.highlightScale=1,this.scene.glplot.add(this.textMarkers)):this.textMarkers&&(this.scene.glplot.remove(this.textMarkers),this.textMarkers.dispose(),this.textMarkers=null),n={gl:a,position:l.position,color:l.errorColor,error:l.errorBounds,lineWidth:l.errorLineWidth,capSize:l.errorCapSize,opacity:t.opacity},this.errorBars?l.errorBounds?this.errorBars.update(n):(this.scene.glplot.remove(this.errorBars),this.errorBars.dispose(),this.errorBars=null):l.errorBounds&&(this.errorBars=g(n),this.scene.glplot.add(this.errorBars)),l.delaunayAxis>=0){var h=i(l.position,l.delaunayColor,l.delaunayAxis);h.opacity=t.opacity,this.delaunayMesh?this.delaunayMesh.update(h):(h.gl=a,this.delaunayMesh=v(h),this.scene.glplot.add(this.delaunayMesh))}else this.delaunayMesh&&(this.scene.glplot.remove(this.delaunayMesh),this.delaunayMesh.dispose(),this.delaunayMesh=null)},k.dispose=function(){this.linePlot&&(this.scene.glplot.remove(this.linePlot),this.linePlot.dispose()),this.scatterPlot&&(this.scene.glplot.remove(this.scatterPlot),this.scatterPlot.dispose()),this.errorBars&&(this.scene.glplot.remove(this.errorBars),this.errorBars.dispose()),this.textMarkers&&(this.scene.glplot.remove(this.textMarkers),this.textMarkers.dispose()),this.delaunayMesh&&(this.scene.glplot.remove(this.delaunayMesh),this.delaunayMesh.dispose())},e.exports=h},{"../../constants/gl3d_dashes":330,"../../constants/gl_markers":331,"../../lib":341,"../../lib/gl_format_color":339,"../../lib/str2rgbarray":353,"../scatter/make_bubble_size_func":432,"./calc_errors":442,"delaunay-triangulate":75,"gl-error3d":97,"gl-line3d":102,"gl-mesh3d":125,"gl-scatter3d":131}],444:[function(t,e,r){"use strict";function n(t,e,r){var n=0,i=r("x"),o=r("y"),a=r("z");return i&&o&&a&&(n=Math.min(i.length,o.length,a.length),n<i.length&&(e.x=i.slice(0,n)),n<o.length&&(e.y=o.slice(0,n)),n<a.length&&(e.z=a.slice(0,n))),n}var i=t("../../lib"),o=t("../scatter/subtypes"),a=t("../scatter/marker_defaults"),s=t("../scatter/line_defaults"),l=t("../scatter/text_defaults"),u=t("../../components/errorbars/defaults"),c=t("./attributes");e.exports=function(t,e,r,f){function h(r,n){return i.coerce(t,e,c,r,n)}var d=n(t,e,h);if(!d)return void(e.visible=!1);h("text"),h("mode"),o.hasLines(e)&&(h("connectgaps"),s(t,e,r,f,h)),o.hasMarkers(e)&&a(t,e,r,f,h),o.hasText(e)&&l(t,e,f,h);var p=(e.line||{}).color,g=(e.marker||{}).color;h("surfaceaxis")>=0&&h("surfacecolor",p||g);for(var v=["x","y","z"],m=0;m<3;++m){var y="projection."+v[m];h(y+".show")&&(h(y+".opacity"),h(y+".scale"))}u(t,e,r,{axis:"z"}),u(t,e,r,{axis:"y",inherit:"z"}),u(t,e,r,{axis:"x",inherit:"z"})}},{"../../components/errorbars/defaults":289,"../../lib":341,"../scatter/line_defaults":429,"../scatter/marker_defaults":433,"../scatter/subtypes":437,"../scatter/text_defaults":438,"./attributes":440}],445:[function(t,e,r){"use strict";var n={};n.plot=t("./convert"),n.attributes=t("./attributes"),n.markerSymbols=t("../../constants/gl_markers"),n.supplyDefaults=t("./defaults"),n.colorbar=t("../scatter/colorbar"),n.calc=t("./calc"),n.moduleType="trace",n.name="scatter3d",n.basePlotModule=t("../../plots/gl3d"),n.categories=["gl3d","symbols","markerColorscale","showLegend"],n.meta={},e.exports=n},{"../../constants/gl_markers":331,"../../plots/gl3d":384,"../scatter/colorbar":421,"./attributes":440,"./calc":441,"./convert":443,"./defaults":444}],446:[function(t,e,r){"use strict";function n(t){return{valType:"boolean",dflt:!1}}function i(t){return{show:{valType:"boolean",dflt:!1},project:{x:n("x"),y:n("y"),z:n("z")},color:{valType:"color",dflt:o.defaultLine},usecolormap:{valType:"boolean",dflt:!1},width:{valType:"number",min:1,max:16,dflt:2},highlight:{valType:"boolean",dflt:!0},highlightcolor:{valType:"color",dflt:o.defaultLine},highlightwidth:{valType:"number",min:1,max:16,dflt:2}}}var o=t("../../components/color"),a=t("../../components/colorscale/attributes"),s=t("../../lib/extend").extendFlat;e.exports={z:{valType:"data_array"},x:{valType:"data_array"},y:{valType:"data_array"},text:{valType:"data_array"},surfacecolor:{valType:"data_array"},cauto:a.zauto,cmin:a.zmin,cmax:a.zmax,colorscale:a.colorscale,autocolorscale:s({},a.autocolorscale,{dflt:!1}),reversescale:a.reversescale,showscale:a.showscale,contours:{x:i("x"),y:i("y"),z:i("z")},hidesurface:{valType:"boolean",dflt:!1},lightposition:{x:{valType:"number",min:-1e5,max:1e5,dflt:10},y:{valType:"number",min:-1e5,max:1e5,dflt:1e4},z:{valType:"number",min:-1e5,max:1e5,dflt:0}},lighting:{ambient:{valType:"number",min:0,max:1,dflt:.8},diffuse:{valType:"number",min:0,max:1,dflt:.8},specular:{valType:"number",min:0,max:2,dflt:.05},roughness:{valType:"number",min:0,max:1,dflt:.5},fresnel:{valType:"number",min:0,max:5,dflt:.2}},opacity:{valType:"number",min:0,max:1,dflt:1},_nestedModules:{colorbar:"Colorbar"},_deprecated:{zauto:s({},a.zauto,{}),zmin:s({},a.zmin,{}),zmax:s({},a.zmax,{})}}},{"../../components/color":261,"../../components/colorscale/attributes":267,"../../lib/extend":338}],447:[function(t,e,r){"use strict";var n=t("../../components/colorscale/calc");e.exports=function(t,e){e.surfacecolor?n(e,e.surfacecolor,"","c"):n(e,e.z,"","c")}},{"../../components/colorscale/calc":268}],448:[function(t,e,r){"use strict";var n=t("d3"),i=t("fast-isnumeric"),o=t("../../lib"),a=t("../../plots/plots"),s=t("../../components/colorscale/get_scale"),l=t("../../components/colorbar/draw");e.exports=function(t,e){var r=e[0].trace,u="cb"+r.uid,c=s(r.colorscale),f=r.cmin,h=r.cmax,d=r.surfacecolor||r.z;if(i(f)||(f=o.aggNums(Math.min,null,d)),i(h)||(h=o.aggNums(Math.max,null,d)),t._fullLayout._infolayer.selectAll("."+u).remove(),!r.showscale)return void a.autoMargin(t,u);var p=e[0].t.cb=l(t,u);p.fillcolor(n.scale.linear().domain(c.map(function(t){return f+t[0]*(h-f)})).range(c.map(function(t){return t[1]}))).filllevels({start:f,end:h,size:(h-f)/254}).options(r.colorbar)()}},{"../../components/colorbar/draw":264,"../../components/colorscale/get_scale":273,"../../lib":341,"../../plots/plots":397,d3:74,"fast-isnumeric":82}],449:[function(t,e,r){"use strict";function n(t,e,r){this.scene=t,this.uid=r,this.surface=e,this.data=null,this.showContour=[!1,!1,!1],this.dataScale=1}function i(t,e){return void 0===e&&(e=1),t.map(function(t){var r=t[0],n=d(t[1]),i=n.toRgb();return{index:r,rgb:[i.r,i.g,i.b,e]}})}function o(t){var e=t.shape,r=[e[0]+2,e[1]+2],n=u(new Float32Array(r[0]*r[1]),r);return h.assign(n.lo(1,1).hi(e[0],e[1]),t),h.assign(n.lo(1).hi(e[0],1),t.hi(e[0],1)),h.assign(n.lo(1,r[1]-1).hi(e[0],1),t.lo(0,e[1]-1).hi(e[0],1)),h.assign(n.lo(0,1).hi(1,e[1]),t.hi(1)),h.assign(n.lo(r[0]-1,1).hi(1,e[1]),t.lo(e[0]-1)),n.set(0,0,t.get(0,0)),n.set(0,r[1]-1,t.get(0,e[1]-1)),n.set(r[0]-1,0,t.get(e[0]-1,0)),n.set(r[0]-1,r[1]-1,t.get(e[0]-1,e[1]-1)),n}function a(t){var e=Math.max(t[0].shape[0],t[0].shape[1]);if(e<g){for(var r=g/e,n=[0|Math.floor(t[0].shape[0]*r+1),0|Math.floor(t[0].shape[1]*r+1)],i=n[0]*n[1],a=0;a<t.length;++a){var s=o(t[a]),l=u(new Float32Array(i),n);c(l,s,[r,0,0,0,r,0,0,0,1]),t[a]=l}return r}return 1}function s(t,e){var r=t.glplot.gl,i=l({gl:r}),o=new n(t,i,e.uid);return o.update(e),t.glplot.add(i),o}var l=t("gl-surface3d"),u=t("ndarray"),c=t("ndarray-homography"),f=t("ndarray-fill"),h=t("ndarray-ops"),d=t("tinycolor2"),p=t("../../lib/str2rgbarray"),g=128,v=n.prototype;v.handlePick=function(t){if(t.object===this.surface){var e=[Math.min(0|Math.round(t.data.index[0]/this.dataScale-1),this.data.z[0].length-1),Math.min(0|Math.round(t.data.index[1]/this.dataScale-1),this.data.z.length-1)],r=[0,0,0];Array.isArray(this.data.x[0])?r[0]=this.data.x[e[1]][e[0]]:r[0]=this.data.x[e[0]],Array.isArray(this.data.y[0])?r[1]=this.data.y[e[1]][e[0]]:r[1]=this.data.y[e[1]],r[2]=this.data.z[e[1]][e[0]],t.traceCoordinate=r;var n=this.scene.fullSceneLayout;t.dataCoordinate=[n.xaxis.d2l(r[0])*this.scene.dataScale[0],n.yaxis.d2l(r[1])*this.scene.dataScale[1],n.zaxis.d2l(r[2])*this.scene.dataScale[2]];var i=this.data.text;return i&&i[e[1]]&&void 0!==i[e[1]][e[0]]?t.textLabel=i[e[1]][e[0]]:t.textLabel="",t.data.dataCoordinate=t.dataCoordinate.slice(),this.surface.highlight(t.data),this.scene.glplot.spikes.position=t.dataCoordinate,!0}},v.setContourLevels=function(){for(var t=[[],[],[]],e=!1,r=0;r<3;++r)this.showContour[r]&&(e=!0,t[r]=this.scene.contourLevels[r]);e&&this.surface.update({levels:t})},v.update=function(t){var e,r=this.scene,n=r.fullSceneLayout,o=this.surface,s=t.opacity,l=i(t.colorscale,s),c=t.z,h=t.x,d=t.y,g=n.xaxis,v=n.yaxis,m=n.zaxis,y=r.dataScale,b=c[0].length,x=c.length,_=[u(new Float32Array(b*x),[b,x]),u(new Float32Array(b*x),[b,x]),u(new Float32Array(b*x),[b,x])],w=_[0],A=_[1],M=r.contourLevels;this.data=t,f(_[2],function(t,e){return m.d2l(c[e][t])*y[2]}),Array.isArray(h[0])?f(w,function(t,e){return g.d2l(h[e][t])*y[0]}):f(w,function(t){return g.d2l(h[t])*y[0]}),Array.isArray(d[0])?f(A,function(t,e){return v.d2l(d[e][t])*y[1]}):f(A,function(t,e){return v.d2l(d[e])*y[1]});var k={colormap:l,levels:[[],[],[]],showContour:[!0,!0,!0],showSurface:!t.hidesurface,contourProject:[[!1,!1,!1],[!1,!1,!1],[!1,!1,!1]],contourWidth:[1,1,1],contourColor:[[1,1,1,1],[1,1,1,1],[1,1,1,1]],contourTint:[1,1,1],dynamicColor:[[1,1,1,1],[1,1,1,1],[1,1,1,1]],dynamicWidth:[1,1,1],dynamicTint:[1,1,1],opacity:1};if(k.intensityBounds=[t.cmin,t.cmax],t.surfacecolor){var T=u(new Float32Array(b*x),[b,x]);f(T,function(e,r){return t.surfacecolor[r][e]}),_.push(T)}else k.intensityBounds[0]*=y[2],k.intensityBounds[1]*=y[2];this.dataScale=a(_),t.surfacecolor&&(k.intensity=_.pop()),"opacity"in t&&t.opacity<1&&(k.opacity=.25*t.opacity);var E=[!0,!0,!0],L=["x","y","z"];for(e=0;e<3;++e){var S=t.contours[L[e]];E[e]=S.highlight,k.showContour[e]=S.show||S.highlight,k.showContour[e]&&(k.contourProject[e]=[S.project.x,S.project.y,S.project.z],S.show?(this.showContour[e]=!0,k.levels[e]=M[e],o.highlightColor[e]=k.contourColor[e]=p(S.color),S.usecolormap?o.highlightTint[e]=k.contourTint[e]=0:o.highlightTint[e]=k.contourTint[e]=1,k.contourWidth[e]=S.width):this.showContour[e]=!1,S.highlight&&(k.dynamicColor[e]=p(S.highlightcolor),k.dynamicWidth[e]=S.highlightwidth))}k.coords=_,o.update(k),o.visible=t.visible,o.enableDynamic=E,o.snapToData=!0,"lighting"in t&&(o.ambientLight=t.lighting.ambient,o.diffuseLight=t.lighting.diffuse,o.specularLight=t.lighting.specular,o.roughness=t.lighting.roughness,o.fresnel=t.lighting.fresnel),"lightposition"in t&&(o.lightPosition=[t.lightposition.x,t.lightposition.y,t.lightposition.z]),s&&s<1&&(o.supportsTransparency=!0)},v.dispose=function(){this.scene.glplot.remove(this.surface),this.surface.dispose()},e.exports=s},{"../../lib/str2rgbarray":353,"gl-surface3d":143,ndarray:191,"ndarray-fill":181,"ndarray-homography":183,"ndarray-ops":185,tinycolor2:240}],450:[function(t,e,r){"use strict";function n(t,e,r){e in t&&!(r in t)&&(t[r]=t[e])}var i=t("../../lib"),o=t("../../components/colorscale/defaults"),a=t("./attributes");e.exports=function(t,e,r,s){function l(r,n){return i.coerce(t,e,a,r,n)}var u,c,f=l("z");if(!f)return void(e.visible=!1);var h=f[0].length,d=f.length;if(l("x"),l("y"),!Array.isArray(e.x))for(e.x=[],u=0;u<h;++u)e.x[u]=u;if(l("text"),!Array.isArray(e.y))for(e.y=[],u=0;u<d;++u)e.y[u]=u;["lighting.ambient","lighting.diffuse","lighting.specular","lighting.roughness","lighting.fresnel","lightposition.x","lightposition.y","lightposition.z","hidesurface","opacity"].forEach(function(t){l(t)});var p=l("surfacecolor");l("colorscale");var g=["x","y","z"];for(u=0;u<3;++u){var v="contours."+g[u],m=l(v+".show"),y=l(v+".highlight");if(m||y)for(c=0;c<3;++c)l(v+".project."+g[c]);m&&(l(v+".color"),l(v+".width"),l(v+".usecolormap")),y&&(l(v+".highlightcolor"),l(v+".highlightwidth"))}p||(n(t,"zmin","cmin"),n(t,"zmax","cmax"),n(t,"zauto","cauto")),o(t,e,s,l,{prefix:"",cLetter:"c"})}},{"../../components/colorscale/defaults":271,"../../lib":341,"./attributes":446}],451:[function(t,e,r){"use strict";var n={};n.attributes=t("./attributes"),n.supplyDefaults=t("./defaults"),n.colorbar=t("./colorbar"),n.calc=t("./calc"),n.plot=t("./convert"),n.moduleType="trace",n.name="surface",n.basePlotModule=t("../../plots/gl3d"),n.categories=["gl3d","noOpacity"],n.meta={},e.exports=n},{"../../plots/gl3d":384,"./attributes":446,"./calc":447,"./colorbar":448,"./convert":449,"./defaults":450}]},{},[4])(4)});
+\ No newline at end of file
+diff --git a/dist/plotly-mapbox.js b/dist/plotly-mapbox.js
+index abd07c7..4ffc2b0 100644
+--- a/dist/plotly-mapbox.js
++++ b/dist/plotly-mapbox.js
+@@ -68,7 +68,7 @@ for(var selector in rules) {
+     Plotly.Lib.addStyleRule(fullSelector, rules[selector]);
+ }
+ 
+-},{"../src/plotly":290}],2:[function(require,module,exports){
++},{"../src/plotly":291}],2:[function(require,module,exports){
+ 'use strict';
+ 
+ module.exports = {
+@@ -199,7 +199,7 @@ module.exports = {
+ 
+ module.exports = require('../src/core');
+ 
+-},{"../src/core":266}],4:[function(require,module,exports){
++},{"../src/core":267}],4:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -229,7 +229,7 @@ module.exports = Plotly;
+ 
+ module.exports = require('../src/traces/scattermapbox');
+ 
+-},{"../src/traces/scattermapbox":364}],6:[function(require,module,exports){
++},{"../src/traces/scattermapbox":365}],6:[function(require,module,exports){
+ // http://wiki.commonjs.org/wiki/Unit_Testing/1.0
+ //
+ // THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
+@@ -590,3015 +590,1975 @@ var objectKeys = Object.keys || function (obj) {
+   return keys;
+ };
+ 
+-},{"util/":12}],7:[function(require,module,exports){
+-// Copyright Joyent, Inc. and other Node contributors.
++},{"util/":183}],7:[function(require,module,exports){
++// (c) Dean McNamee <dean@gmail.com>, 2012.
+ //
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
++// https://github.com/deanm/css-color-parser-js
+ //
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
++// Permission is hereby granted, free of charge, to any person obtaining a copy
++// of this software and associated documentation files (the "Software"), to
++// deal in the Software without restriction, including without limitation the
++// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
++// sell copies of the Software, and to permit persons to whom the Software is
++// furnished to do so, subject to the following conditions:
+ //
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
++// The above copyright notice and this permission notice shall be included in
++// all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
++// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
++// IN THE SOFTWARE.
+ 
+-function EventEmitter() {
+-  this._events = this._events || {};
+-  this._maxListeners = this._maxListeners || undefined;
++// http://www.w3.org/TR/css3-color/
++var kCSSColorTable = {
++  "transparent": [0,0,0,0], "aliceblue": [240,248,255,1],
++  "antiquewhite": [250,235,215,1], "aqua": [0,255,255,1],
++  "aquamarine": [127,255,212,1], "azure": [240,255,255,1],
++  "beige": [245,245,220,1], "bisque": [255,228,196,1],
++  "black": [0,0,0,1], "blanchedalmond": [255,235,205,1],
++  "blue": [0,0,255,1], "blueviolet": [138,43,226,1],
++  "brown": [165,42,42,1], "burlywood": [222,184,135,1],
++  "cadetblue": [95,158,160,1], "chartreuse": [127,255,0,1],
++  "chocolate": [210,105,30,1], "coral": [255,127,80,1],
++  "cornflowerblue": [100,149,237,1], "cornsilk": [255,248,220,1],
++  "crimson": [220,20,60,1], "cyan": [0,255,255,1],
++  "darkblue": [0,0,139,1], "darkcyan": [0,139,139,1],
++  "darkgoldenrod": [184,134,11,1], "darkgray": [169,169,169,1],
++  "darkgreen": [0,100,0,1], "darkgrey": [169,169,169,1],
++  "darkkhaki": [189,183,107,1], "darkmagenta": [139,0,139,1],
++  "darkolivegreen": [85,107,47,1], "darkorange": [255,140,0,1],
++  "darkorchid": [153,50,204,1], "darkred": [139,0,0,1],
++  "darksalmon": [233,150,122,1], "darkseagreen": [143,188,143,1],
++  "darkslateblue": [72,61,139,1], "darkslategray": [47,79,79,1],
++  "darkslategrey": [47,79,79,1], "darkturquoise": [0,206,209,1],
++  "darkviolet": [148,0,211,1], "deeppink": [255,20,147,1],
++  "deepskyblue": [0,191,255,1], "dimgray": [105,105,105,1],
++  "dimgrey": [105,105,105,1], "dodgerblue": [30,144,255,1],
++  "firebrick": [178,34,34,1], "floralwhite": [255,250,240,1],
++  "forestgreen": [34,139,34,1], "fuchsia": [255,0,255,1],
++  "gainsboro": [220,220,220,1], "ghostwhite": [248,248,255,1],
++  "gold": [255,215,0,1], "goldenrod": [218,165,32,1],
++  "gray": [128,128,128,1], "green": [0,128,0,1],
++  "greenyellow": [173,255,47,1], "grey": [128,128,128,1],
++  "honeydew": [240,255,240,1], "hotpink": [255,105,180,1],
++  "indianred": [205,92,92,1], "indigo": [75,0,130,1],
++  "ivory": [255,255,240,1], "khaki": [240,230,140,1],
++  "lavender": [230,230,250,1], "lavenderblush": [255,240,245,1],
++  "lawngreen": [124,252,0,1], "lemonchiffon": [255,250,205,1],
++  "lightblue": [173,216,230,1], "lightcoral": [240,128,128,1],
++  "lightcyan": [224,255,255,1], "lightgoldenrodyellow": [250,250,210,1],
++  "lightgray": [211,211,211,1], "lightgreen": [144,238,144,1],
++  "lightgrey": [211,211,211,1], "lightpink": [255,182,193,1],
++  "lightsalmon": [255,160,122,1], "lightseagreen": [32,178,170,1],
++  "lightskyblue": [135,206,250,1], "lightslategray": [119,136,153,1],
++  "lightslategrey": [119,136,153,1], "lightsteelblue": [176,196,222,1],
++  "lightyellow": [255,255,224,1], "lime": [0,255,0,1],
++  "limegreen": [50,205,50,1], "linen": [250,240,230,1],
++  "magenta": [255,0,255,1], "maroon": [128,0,0,1],
++  "mediumaquamarine": [102,205,170,1], "mediumblue": [0,0,205,1],
++  "mediumorchid": [186,85,211,1], "mediumpurple": [147,112,219,1],
++  "mediumseagreen": [60,179,113,1], "mediumslateblue": [123,104,238,1],
++  "mediumspringgreen": [0,250,154,1], "mediumturquoise": [72,209,204,1],
++  "mediumvioletred": [199,21,133,1], "midnightblue": [25,25,112,1],
++  "mintcream": [245,255,250,1], "mistyrose": [255,228,225,1],
++  "moccasin": [255,228,181,1], "navajowhite": [255,222,173,1],
++  "navy": [0,0,128,1], "oldlace": [253,245,230,1],
++  "olive": [128,128,0,1], "olivedrab": [107,142,35,1],
++  "orange": [255,165,0,1], "orangered": [255,69,0,1],
++  "orchid": [218,112,214,1], "palegoldenrod": [238,232,170,1],
++  "palegreen": [152,251,152,1], "paleturquoise": [175,238,238,1],
++  "palevioletred": [219,112,147,1], "papayawhip": [255,239,213,1],
++  "peachpuff": [255,218,185,1], "peru": [205,133,63,1],
++  "pink": [255,192,203,1], "plum": [221,160,221,1],
++  "powderblue": [176,224,230,1], "purple": [128,0,128,1],
++  "rebeccapurple": [102,51,153,1],
++  "red": [255,0,0,1], "rosybrown": [188,143,143,1],
++  "royalblue": [65,105,225,1], "saddlebrown": [139,69,19,1],
++  "salmon": [250,128,114,1], "sandybrown": [244,164,96,1],
++  "seagreen": [46,139,87,1], "seashell": [255,245,238,1],
++  "sienna": [160,82,45,1], "silver": [192,192,192,1],
++  "skyblue": [135,206,235,1], "slateblue": [106,90,205,1],
++  "slategray": [112,128,144,1], "slategrey": [112,128,144,1],
++  "snow": [255,250,250,1], "springgreen": [0,255,127,1],
++  "steelblue": [70,130,180,1], "tan": [210,180,140,1],
++  "teal": [0,128,128,1], "thistle": [216,191,216,1],
++  "tomato": [255,99,71,1], "turquoise": [64,224,208,1],
++  "violet": [238,130,238,1], "wheat": [245,222,179,1],
++  "white": [255,255,255,1], "whitesmoke": [245,245,245,1],
++  "yellow": [255,255,0,1], "yellowgreen": [154,205,50,1]}
++
++function clamp_css_byte(i) {  // Clamp to integer 0 .. 255.
++  i = Math.round(i);  // Seems to be what Chrome does (vs truncation).
++  return i < 0 ? 0 : i > 255 ? 255 : i;
+ }
+-module.exports = EventEmitter;
+ 
+-// Backwards-compat with node 0.10.x
+-EventEmitter.EventEmitter = EventEmitter;
++function clamp_css_float(f) {  // Clamp to float 0.0 .. 1.0.
++  return f < 0 ? 0 : f > 1 ? 1 : f;
++}
+ 
+-EventEmitter.prototype._events = undefined;
+-EventEmitter.prototype._maxListeners = undefined;
++function parse_css_int(str) {  // int or percentage.
++  if (str[str.length - 1] === '%')
++    return clamp_css_byte(parseFloat(str) / 100 * 255);
++  return clamp_css_byte(parseInt(str));
++}
+ 
+-// By default EventEmitters will print a warning if more than 10 listeners are
+-// added to it. This is a useful default which helps finding memory leaks.
+-EventEmitter.defaultMaxListeners = 10;
++function parse_css_float(str) {  // float or percentage.
++  if (str[str.length - 1] === '%')
++    return clamp_css_float(parseFloat(str) / 100);
++  return clamp_css_float(parseFloat(str));
++}
+ 
+-// Obviously not all Emitters should be limited to 10. This function allows
+-// that to be increased. Set to zero for unlimited.
+-EventEmitter.prototype.setMaxListeners = function(n) {
+-  if (!isNumber(n) || n < 0 || isNaN(n))
+-    throw TypeError('n must be a positive number');
+-  this._maxListeners = n;
+-  return this;
+-};
++function css_hue_to_rgb(m1, m2, h) {
++  if (h < 0) h += 1;
++  else if (h > 1) h -= 1;
+ 
+-EventEmitter.prototype.emit = function(type) {
+-  var er, handler, len, args, i, listeners;
++  if (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
++  if (h * 2 < 1) return m2;
++  if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6;
++  return m1;
++}
+ 
+-  if (!this._events)
+-    this._events = {};
++function parseCSSColor(css_str) {
++  // Remove all whitespace, not compliant, but should just be more accepting.
++  var str = css_str.replace(/ /g, '').toLowerCase();
+ 
+-  // If there is no 'error' event listener then throw.
+-  if (type === 'error') {
+-    if (!this._events.error ||
+-        (isObject(this._events.error) && !this._events.error.length)) {
+-      er = arguments[1];
+-      if (er instanceof Error) {
+-        throw er; // Unhandled 'error' event
+-      }
+-      throw TypeError('Uncaught, unspecified "error" event.');
+-    }
+-  }
++  // Color keywords (and transparent) lookup.
++  if (str in kCSSColorTable) return kCSSColorTable[str].slice();  // dup.
+ 
+-  handler = this._events[type];
++  // #abc and #abc123 syntax.
++  if (str[0] === '#') {
++    if (str.length === 4) {
++      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
++      if (!(iv >= 0 && iv <= 0xfff)) return null;  // Covers NaN.
++      return [((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8),
++              (iv & 0xf0) | ((iv & 0xf0) >> 4),
++              (iv & 0xf) | ((iv & 0xf) << 4),
++              1];
++    } else if (str.length === 7) {
++      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
++      if (!(iv >= 0 && iv <= 0xffffff)) return null;  // Covers NaN.
++      return [(iv & 0xff0000) >> 16,
++              (iv & 0xff00) >> 8,
++              iv & 0xff,
++              1];
++    }
+ 
+-  if (isUndefined(handler))
+-    return false;
++    return null;
++  }
+ 
+-  if (isFunction(handler)) {
+-    switch (arguments.length) {
+-      // fast cases
+-      case 1:
+-        handler.call(this);
+-        break;
+-      case 2:
+-        handler.call(this, arguments[1]);
+-        break;
+-      case 3:
+-        handler.call(this, arguments[1], arguments[2]);
+-        break;
+-      // slower
++  var op = str.indexOf('('), ep = str.indexOf(')');
++  if (op !== -1 && ep + 1 === str.length) {
++    var fname = str.substr(0, op);
++    var params = str.substr(op+1, ep-(op+1)).split(',');
++    var alpha = 1;  // To allow case fallthrough.
++    switch (fname) {
++      case 'rgba':
++        if (params.length !== 4) return null;
++        alpha = parse_css_float(params.pop());
++        // Fall through.
++      case 'rgb':
++        if (params.length !== 3) return null;
++        return [parse_css_int(params[0]),
++                parse_css_int(params[1]),
++                parse_css_int(params[2]),
++                alpha];
++      case 'hsla':
++        if (params.length !== 4) return null;
++        alpha = parse_css_float(params.pop());
++        // Fall through.
++      case 'hsl':
++        if (params.length !== 3) return null;
++        var h = (((parseFloat(params[0]) % 360) + 360) % 360) / 360;  // 0 .. 1
++        // NOTE(deanm): According to the CSS spec s/l should only be
++        // percentages, but we don't bother and let float or percentage.
++        var s = parse_css_float(params[1]);
++        var l = parse_css_float(params[2]);
++        var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
++        var m1 = l * 2 - m2;
++        return [clamp_css_byte(css_hue_to_rgb(m1, m2, h+1/3) * 255),
++                clamp_css_byte(css_hue_to_rgb(m1, m2, h) * 255),
++                clamp_css_byte(css_hue_to_rgb(m1, m2, h-1/3) * 255),
++                alpha];
+       default:
+-        args = Array.prototype.slice.call(arguments, 1);
+-        handler.apply(this, args);
++        return null;
+     }
+-  } else if (isObject(handler)) {
+-    args = Array.prototype.slice.call(arguments, 1);
+-    listeners = handler.slice();
+-    len = listeners.length;
+-    for (i = 0; i < len; i++)
+-      listeners[i].apply(this, args);
+   }
+ 
+-  return true;
+-};
+-
+-EventEmitter.prototype.addListener = function(type, listener) {
+-  var m;
+-
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  if (!this._events)
+-    this._events = {};
+-
+-  // To avoid recursion in the case that type === "newListener"! Before
+-  // adding it to the listeners, first emit "newListener".
+-  if (this._events.newListener)
+-    this.emit('newListener', type,
+-              isFunction(listener.listener) ?
+-              listener.listener : listener);
+-
+-  if (!this._events[type])
+-    // Optimize the case of one listener. Don't need the extra array object.
+-    this._events[type] = listener;
+-  else if (isObject(this._events[type]))
+-    // If we've already got an array, just append.
+-    this._events[type].push(listener);
+-  else
+-    // Adding the second element, need to change to array.
+-    this._events[type] = [this._events[type], listener];
++  return null;
++}
+ 
+-  // Check for listener leak
+-  if (isObject(this._events[type]) && !this._events[type].warned) {
+-    if (!isUndefined(this._maxListeners)) {
+-      m = this._maxListeners;
+-    } else {
+-      m = EventEmitter.defaultMaxListeners;
+-    }
++try { exports.parseCSSColor = parseCSSColor } catch(e) { }
+ 
+-    if (m && m > 0 && this._events[type].length > m) {
+-      this._events[type].warned = true;
+-      console.error('(node) warning: possible EventEmitter memory ' +
+-                    'leak detected. %d listeners added. ' +
+-                    'Use emitter.setMaxListeners() to increase limit.',
+-                    this._events[type].length);
+-      if (typeof console.trace === 'function') {
+-        // not supported in IE 10
+-        console.trace();
+-      }
++},{}],8:[function(require,module,exports){
++!function() {
++  var d3 = {
++    version: "3.5.17"
++  };
++  var d3_arraySlice = [].slice, d3_array = function(list) {
++    return d3_arraySlice.call(list);
++  };
++  var d3_document = this.document;
++  function d3_documentElement(node) {
++    return node && (node.ownerDocument || node.document || node).documentElement;
++  }
++  function d3_window(node) {
++    return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
++  }
++  if (d3_document) {
++    try {
++      d3_array(d3_document.documentElement.childNodes)[0].nodeType;
++    } catch (e) {
++      d3_array = function(list) {
++        var i = list.length, array = new Array(i);
++        while (i--) array[i] = list[i];
++        return array;
++      };
+     }
+   }
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+-
+-EventEmitter.prototype.once = function(type, listener) {
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  var fired = false;
+-
+-  function g() {
+-    this.removeListener(type, g);
+-
+-    if (!fired) {
+-      fired = true;
+-      listener.apply(this, arguments);
++  if (!Date.now) Date.now = function() {
++    return +new Date();
++  };
++  if (d3_document) {
++    try {
++      d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
++    } catch (error) {
++      var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
++      d3_element_prototype.setAttribute = function(name, value) {
++        d3_element_setAttribute.call(this, name, value + "");
++      };
++      d3_element_prototype.setAttributeNS = function(space, local, value) {
++        d3_element_setAttributeNS.call(this, space, local, value + "");
++      };
++      d3_style_prototype.setProperty = function(name, value, priority) {
++        d3_style_setProperty.call(this, name, value + "", priority);
++      };
+     }
+   }
+-
+-  g.listener = listener;
+-  this.on(type, g);
+-
+-  return this;
+-};
+-
+-// emits a 'removeListener' event iff the listener was removed
+-EventEmitter.prototype.removeListener = function(type, listener) {
+-  var list, position, length, i;
+-
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+-
+-  if (!this._events || !this._events[type])
+-    return this;
+-
+-  list = this._events[type];
+-  length = list.length;
+-  position = -1;
+-
+-  if (list === listener ||
+-      (isFunction(list.listener) && list.listener === listener)) {
+-    delete this._events[type];
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+-
+-  } else if (isObject(list)) {
+-    for (i = length; i-- > 0;) {
+-      if (list[i] === listener ||
+-          (list[i].listener && list[i].listener === listener)) {
+-        position = i;
++  d3.ascending = d3_ascending;
++  function d3_ascending(a, b) {
++    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
++  }
++  d3.descending = function(a, b) {
++    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
++  };
++  d3.min = function(array, f) {
++    var i = -1, n = array.length, a, b;
++    if (arguments.length === 1) {
++      while (++i < n) if ((b = array[i]) != null && b >= b) {
++        a = b;
++        break;
++      }
++      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
++    } else {
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
++        a = b;
+         break;
+       }
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
+     }
+-
+-    if (position < 0)
+-      return this;
+-
+-    if (list.length === 1) {
+-      list.length = 0;
+-      delete this._events[type];
++    return a;
++  };
++  d3.max = function(array, f) {
++    var i = -1, n = array.length, a, b;
++    if (arguments.length === 1) {
++      while (++i < n) if ((b = array[i]) != null && b >= b) {
++        a = b;
++        break;
++      }
++      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
+     } else {
+-      list.splice(position, 1);
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
++        a = b;
++        break;
++      }
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
+     }
+-
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+-  }
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.removeAllListeners = function(type) {
+-  var key, listeners;
+-
+-  if (!this._events)
+-    return this;
+-
+-  // not listening for removeListener, no need to emit
+-  if (!this._events.removeListener) {
+-    if (arguments.length === 0)
+-      this._events = {};
+-    else if (this._events[type])
+-      delete this._events[type];
+-    return this;
+-  }
+-
+-  // emit removeListener for all listeners on all events
+-  if (arguments.length === 0) {
+-    for (key in this._events) {
+-      if (key === 'removeListener') continue;
+-      this.removeAllListeners(key);
++    return a;
++  };
++  d3.extent = function(array, f) {
++    var i = -1, n = array.length, a, b, c;
++    if (arguments.length === 1) {
++      while (++i < n) if ((b = array[i]) != null && b >= b) {
++        a = c = b;
++        break;
++      }
++      while (++i < n) if ((b = array[i]) != null) {
++        if (a > b) a = b;
++        if (c < b) c = b;
++      }
++    } else {
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
++        a = c = b;
++        break;
++      }
++      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
++        if (a > b) a = b;
++        if (c < b) c = b;
++      }
+     }
+-    this.removeAllListeners('removeListener');
+-    this._events = {};
+-    return this;
++    return [ a, c ];
++  };
++  function d3_number(x) {
++    return x === null ? NaN : +x;
+   }
+-
+-  listeners = this._events[type];
+-
+-  if (isFunction(listeners)) {
+-    this.removeListener(type, listeners);
+-  } else if (listeners) {
+-    // LIFO order
+-    while (listeners.length)
+-      this.removeListener(type, listeners[listeners.length - 1]);
++  function d3_numeric(x) {
++    return !isNaN(x);
+   }
+-  delete this._events[type];
+-
+-  return this;
+-};
+-
+-EventEmitter.prototype.listeners = function(type) {
+-  var ret;
+-  if (!this._events || !this._events[type])
+-    ret = [];
+-  else if (isFunction(this._events[type]))
+-    ret = [this._events[type]];
+-  else
+-    ret = this._events[type].slice();
+-  return ret;
+-};
+-
+-EventEmitter.prototype.listenerCount = function(type) {
+-  if (this._events) {
+-    var evlistener = this._events[type];
+-
+-    if (isFunction(evlistener))
+-      return 1;
+-    else if (evlistener)
+-      return evlistener.length;
+-  }
+-  return 0;
+-};
+-
+-EventEmitter.listenerCount = function(emitter, type) {
+-  return emitter.listenerCount(type);
+-};
+-
+-function isFunction(arg) {
+-  return typeof arg === 'function';
+-}
+-
+-function isNumber(arg) {
+-  return typeof arg === 'number';
+-}
+-
+-function isObject(arg) {
+-  return typeof arg === 'object' && arg !== null;
+-}
+-
+-function isUndefined(arg) {
+-  return arg === void 0;
+-}
+-
+-},{}],8:[function(require,module,exports){
+-if (typeof Object.create === 'function') {
+-  // implementation from standard node.js 'util' module
+-  module.exports = function inherits(ctor, superCtor) {
+-    ctor.super_ = superCtor
+-    ctor.prototype = Object.create(superCtor.prototype, {
+-      constructor: {
+-        value: ctor,
+-        enumerable: false,
+-        writable: true,
+-        configurable: true
++  d3.sum = function(array, f) {
++    var s = 0, n = array.length, a, i = -1;
++    if (arguments.length === 1) {
++      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
++    } else {
++      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
++    }
++    return s;
++  };
++  d3.mean = function(array, f) {
++    var s = 0, n = array.length, a, i = -1, j = n;
++    if (arguments.length === 1) {
++      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
++    } else {
++      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
++    }
++    if (j) return s / j;
++  };
++  d3.quantile = function(values, p) {
++    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
++    return e ? v + e * (values[h] - v) : v;
++  };
++  d3.median = function(array, f) {
++    var numbers = [], n = array.length, a, i = -1;
++    if (arguments.length === 1) {
++      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
++    } else {
++      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
++    }
++    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
++  };
++  d3.variance = function(array, f) {
++    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
++    if (arguments.length === 1) {
++      while (++i < n) {
++        if (d3_numeric(a = d3_number(array[i]))) {
++          d = a - m;
++          m += d / ++j;
++          s += d * (a - m);
++        }
+       }
+-    });
++    } else {
++      while (++i < n) {
++        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
++          d = a - m;
++          m += d / ++j;
++          s += d * (a - m);
++        }
++      }
++    }
++    if (j > 1) return s / (j - 1);
+   };
+-} else {
+-  // old school shim for old browsers
+-  module.exports = function inherits(ctor, superCtor) {
+-    ctor.super_ = superCtor
+-    var TempCtor = function () {}
+-    TempCtor.prototype = superCtor.prototype
+-    ctor.prototype = new TempCtor()
+-    ctor.prototype.constructor = ctor
++  d3.deviation = function() {
++    var v = d3.variance.apply(this, arguments);
++    return v ? Math.sqrt(v) : v;
++  };
++  function d3_bisector(compare) {
++    return {
++      left: function(a, x, lo, hi) {
++        if (arguments.length < 3) lo = 0;
++        if (arguments.length < 4) hi = a.length;
++        while (lo < hi) {
++          var mid = lo + hi >>> 1;
++          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
++        }
++        return lo;
++      },
++      right: function(a, x, lo, hi) {
++        if (arguments.length < 3) lo = 0;
++        if (arguments.length < 4) hi = a.length;
++        while (lo < hi) {
++          var mid = lo + hi >>> 1;
++          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
++        }
++        return lo;
++      }
++    };
+   }
+-}
+-
+-},{}],9:[function(require,module,exports){
+-(function (process){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+-
+-// resolves . and .. elements in a path array with directory names there
+-// must be no slashes, empty elements, or device names (c:\) in the array
+-// (so also no leading and trailing slashes - it does not distinguish
+-// relative and absolute paths)
+-function normalizeArray(parts, allowAboveRoot) {
+-  // if the path tries to go above the root, `up` ends up > 0
+-  var up = 0;
+-  for (var i = parts.length - 1; i >= 0; i--) {
+-    var last = parts[i];
+-    if (last === '.') {
+-      parts.splice(i, 1);
+-    } else if (last === '..') {
+-      parts.splice(i, 1);
+-      up++;
+-    } else if (up) {
+-      parts.splice(i, 1);
+-      up--;
++  var d3_bisect = d3_bisector(d3_ascending);
++  d3.bisectLeft = d3_bisect.left;
++  d3.bisect = d3.bisectRight = d3_bisect.right;
++  d3.bisector = function(f) {
++    return d3_bisector(f.length === 1 ? function(d, x) {
++      return d3_ascending(f(d), x);
++    } : f);
++  };
++  d3.shuffle = function(array, i0, i1) {
++    if ((m = arguments.length) < 3) {
++      i1 = array.length;
++      if (m < 2) i0 = 0;
+     }
+-  }
+-
+-  // if the path is allowed to go above the root, restore leading ..s
+-  if (allowAboveRoot) {
+-    for (; up--; up) {
+-      parts.unshift('..');
++    var m = i1 - i0, t, i;
++    while (m) {
++      i = Math.random() * m-- | 0;
++      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
+     }
+-  }
+-
+-  return parts;
+-}
+-
+-// Split a filename into [root, dir, basename, ext], unix version
+-// 'root' is just a slash, or nothing.
+-var splitPathRe =
+-    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
+-var splitPath = function(filename) {
+-  return splitPathRe.exec(filename).slice(1);
+-};
+-
+-// path.resolve([from ...], to)
+-// posix version
+-exports.resolve = function() {
+-  var resolvedPath = '',
+-      resolvedAbsolute = false;
+-
+-  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
+-    var path = (i >= 0) ? arguments[i] : process.cwd();
+-
+-    // Skip empty and invalid entries
+-    if (typeof path !== 'string') {
+-      throw new TypeError('Arguments to path.resolve must be strings');
+-    } else if (!path) {
+-      continue;
++    return array;
++  };
++  d3.permute = function(array, indexes) {
++    var i = indexes.length, permutes = new Array(i);
++    while (i--) permutes[i] = array[indexes[i]];
++    return permutes;
++  };
++  d3.pairs = function(array) {
++    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
++    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
++    return pairs;
++  };
++  d3.transpose = function(matrix) {
++    if (!(n = matrix.length)) return [];
++    for (var i = -1, m = d3.min(matrix, d3_transposeLength), transpose = new Array(m); ++i < m; ) {
++      for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n; ) {
++        row[j] = matrix[j][i];
++      }
+     }
+-
+-    resolvedPath = path + '/' + resolvedPath;
+-    resolvedAbsolute = path.charAt(0) === '/';
+-  }
+-
+-  // At this point the path should be resolved to a full absolute path, but
+-  // handle relative paths to be safe (might happen when process.cwd() fails)
+-
+-  // Normalize the path
+-  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
+-    return !!p;
+-  }), !resolvedAbsolute).join('/');
+-
+-  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
+-};
+-
+-// path.normalize(path)
+-// posix version
+-exports.normalize = function(path) {
+-  var isAbsolute = exports.isAbsolute(path),
+-      trailingSlash = substr(path, -1) === '/';
+-
+-  // Normalize the path
+-  path = normalizeArray(filter(path.split('/'), function(p) {
+-    return !!p;
+-  }), !isAbsolute).join('/');
+-
+-  if (!path && !isAbsolute) {
+-    path = '.';
+-  }
+-  if (path && trailingSlash) {
+-    path += '/';
++    return transpose;
++  };
++  function d3_transposeLength(d) {
++    return d.length;
+   }
+-
+-  return (isAbsolute ? '/' : '') + path;
+-};
+-
+-// posix version
+-exports.isAbsolute = function(path) {
+-  return path.charAt(0) === '/';
+-};
+-
+-// posix version
+-exports.join = function() {
+-  var paths = Array.prototype.slice.call(arguments, 0);
+-  return exports.normalize(filter(paths, function(p, index) {
+-    if (typeof p !== 'string') {
+-      throw new TypeError('Arguments to path.join must be strings');
++  d3.zip = function() {
++    return d3.transpose(arguments);
++  };
++  d3.keys = function(map) {
++    var keys = [];
++    for (var key in map) keys.push(key);
++    return keys;
++  };
++  d3.values = function(map) {
++    var values = [];
++    for (var key in map) values.push(map[key]);
++    return values;
++  };
++  d3.entries = function(map) {
++    var entries = [];
++    for (var key in map) entries.push({
++      key: key,
++      value: map[key]
++    });
++    return entries;
++  };
++  d3.merge = function(arrays) {
++    var n = arrays.length, m, i = -1, j = 0, merged, array;
++    while (++i < n) j += arrays[i].length;
++    merged = new Array(j);
++    while (--n >= 0) {
++      array = arrays[n];
++      m = array.length;
++      while (--m >= 0) {
++        merged[--j] = array[m];
++      }
+     }
+-    return p;
+-  }).join('/'));
+-};
+-
+-
+-// path.relative(from, to)
+-// posix version
+-exports.relative = function(from, to) {
+-  from = exports.resolve(from).substr(1);
+-  to = exports.resolve(to).substr(1);
+-
+-  function trim(arr) {
+-    var start = 0;
+-    for (; start < arr.length; start++) {
+-      if (arr[start] !== '') break;
++    return merged;
++  };
++  var abs = Math.abs;
++  d3.range = function(start, stop, step) {
++    if (arguments.length < 3) {
++      step = 1;
++      if (arguments.length < 2) {
++        stop = start;
++        start = 0;
++      }
+     }
+-
+-    var end = arr.length - 1;
+-    for (; end >= 0; end--) {
+-      if (arr[end] !== '') break;
++    if ((stop - start) / step === Infinity) throw new Error("infinite range");
++    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
++    start *= k, stop *= k, step *= k;
++    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
++    return range;
++  };
++  function d3_range_integerScale(x) {
++    var k = 1;
++    while (x * k % 1) k *= 10;
++    return k;
++  }
++  function d3_class(ctor, properties) {
++    for (var key in properties) {
++      Object.defineProperty(ctor.prototype, key, {
++        value: properties[key],
++        enumerable: false
++      });
+     }
+-
+-    if (start > end) return [];
+-    return arr.slice(start, end - start + 1);
+   }
+-
+-  var fromParts = trim(from.split('/'));
+-  var toParts = trim(to.split('/'));
+-
+-  var length = Math.min(fromParts.length, toParts.length);
+-  var samePartsLength = length;
+-  for (var i = 0; i < length; i++) {
+-    if (fromParts[i] !== toParts[i]) {
+-      samePartsLength = i;
+-      break;
++  d3.map = function(object, f) {
++    var map = new d3_Map();
++    if (object instanceof d3_Map) {
++      object.forEach(function(key, value) {
++        map.set(key, value);
++      });
++    } else if (Array.isArray(object)) {
++      var i = -1, n = object.length, o;
++      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
++    } else {
++      for (var key in object) map.set(key, object[key]);
+     }
++    return map;
++  };
++  function d3_Map() {
++    this._ = Object.create(null);
+   }
+-
+-  var outputParts = [];
+-  for (var i = samePartsLength; i < fromParts.length; i++) {
+-    outputParts.push('..');
++  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
++  d3_class(d3_Map, {
++    has: d3_map_has,
++    get: function(key) {
++      return this._[d3_map_escape(key)];
++    },
++    set: function(key, value) {
++      return this._[d3_map_escape(key)] = value;
++    },
++    remove: d3_map_remove,
++    keys: d3_map_keys,
++    values: function() {
++      var values = [];
++      for (var key in this._) values.push(this._[key]);
++      return values;
++    },
++    entries: function() {
++      var entries = [];
++      for (var key in this._) entries.push({
++        key: d3_map_unescape(key),
++        value: this._[key]
++      });
++      return entries;
++    },
++    size: d3_map_size,
++    empty: d3_map_empty,
++    forEach: function(f) {
++      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
++    }
++  });
++  function d3_map_escape(key) {
++    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
+   }
+-
+-  outputParts = outputParts.concat(toParts.slice(samePartsLength));
+-
+-  return outputParts.join('/');
+-};
+-
+-exports.sep = '/';
+-exports.delimiter = ':';
+-
+-exports.dirname = function(path) {
+-  var result = splitPath(path),
+-      root = result[0],
+-      dir = result[1];
+-
+-  if (!root && !dir) {
+-    // No dirname whatsoever
+-    return '.';
++  function d3_map_unescape(key) {
++    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
+   }
+-
+-  if (dir) {
+-    // It has a dirname, strip trailing slash
+-    dir = dir.substr(0, dir.length - 1);
++  function d3_map_has(key) {
++    return d3_map_escape(key) in this._;
+   }
+-
+-  return root + dir;
+-};
+-
+-
+-exports.basename = function(path, ext) {
+-  var f = splitPath(path)[2];
+-  // TODO: make this comparison case-insensitive on windows?
+-  if (ext && f.substr(-1 * ext.length) === ext) {
+-    f = f.substr(0, f.length - ext.length);
++  function d3_map_remove(key) {
++    return (key = d3_map_escape(key)) in this._ && delete this._[key];
+   }
+-  return f;
+-};
+-
+-
+-exports.extname = function(path) {
+-  return splitPath(path)[3];
+-};
+-
+-function filter (xs, f) {
+-    if (xs.filter) return xs.filter(f);
+-    var res = [];
+-    for (var i = 0; i < xs.length; i++) {
+-        if (f(xs[i], i, xs)) res.push(xs[i]);
+-    }
+-    return res;
+-}
+-
+-// String.prototype.substr - negative index don't work in IE8
+-var substr = 'ab'.substr(-1) === 'b'
+-    ? function (str, start, len) { return str.substr(start, len) }
+-    : function (str, start, len) {
+-        if (start < 0) start = str.length + start;
+-        return str.substr(start, len);
+-    }
+-;
+-
+-}).call(this,require('_process'))
+-},{"_process":10}],10:[function(require,module,exports){
+-// shim for using process in browser
+-
+-var process = module.exports = {};
+-var queue = [];
+-var draining = false;
+-var currentQueue;
+-var queueIndex = -1;
+-
+-function cleanUpNextTick() {
+-    draining = false;
+-    if (currentQueue.length) {
+-        queue = currentQueue.concat(queue);
+-    } else {
+-        queueIndex = -1;
+-    }
+-    if (queue.length) {
+-        drainQueue();
+-    }
+-}
+-
+-function drainQueue() {
+-    if (draining) {
+-        return;
+-    }
+-    var timeout = setTimeout(cleanUpNextTick);
+-    draining = true;
+-
+-    var len = queue.length;
+-    while(len) {
+-        currentQueue = queue;
+-        queue = [];
+-        while (++queueIndex < len) {
+-            if (currentQueue) {
+-                currentQueue[queueIndex].run();
+-            }
+-        }
+-        queueIndex = -1;
+-        len = queue.length;
+-    }
+-    currentQueue = null;
+-    draining = false;
+-    clearTimeout(timeout);
+-}
+-
+-process.nextTick = function (fun) {
+-    var args = new Array(arguments.length - 1);
+-    if (arguments.length > 1) {
+-        for (var i = 1; i < arguments.length; i++) {
+-            args[i - 1] = arguments[i];
++  function d3_map_keys() {
++    var keys = [];
++    for (var key in this._) keys.push(d3_map_unescape(key));
++    return keys;
++  }
++  function d3_map_size() {
++    var size = 0;
++    for (var key in this._) ++size;
++    return size;
++  }
++  function d3_map_empty() {
++    for (var key in this._) return false;
++    return true;
++  }
++  d3.nest = function() {
++    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
++    function map(mapType, array, depth) {
++      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
++      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
++      while (++i < n) {
++        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
++          values.push(object);
++        } else {
++          valuesByKey.set(keyValue, [ object ]);
+         }
++      }
++      if (mapType) {
++        object = mapType();
++        setter = function(keyValue, values) {
++          object.set(keyValue, map(mapType, values, depth));
++        };
++      } else {
++        object = {};
++        setter = function(keyValue, values) {
++          object[keyValue] = map(mapType, values, depth);
++        };
++      }
++      valuesByKey.forEach(setter);
++      return object;
+     }
+-    queue.push(new Item(fun, args));
+-    if (queue.length === 1 && !draining) {
+-        setTimeout(drainQueue, 0);
+-    }
+-};
+-
+-// v8 likes predictible objects
+-function Item(fun, array) {
+-    this.fun = fun;
+-    this.array = array;
+-}
+-Item.prototype.run = function () {
+-    this.fun.apply(null, this.array);
+-};
+-process.title = 'browser';
+-process.browser = true;
+-process.env = {};
+-process.argv = [];
+-process.version = ''; // empty string to avoid regexp issues
+-process.versions = {};
+-
+-function noop() {}
+-
+-process.on = noop;
+-process.addListener = noop;
+-process.once = noop;
+-process.off = noop;
+-process.removeListener = noop;
+-process.removeAllListeners = noop;
+-process.emit = noop;
+-
+-process.binding = function (name) {
+-    throw new Error('process.binding is not supported');
+-};
+-
+-process.cwd = function () { return '/' };
+-process.chdir = function (dir) {
+-    throw new Error('process.chdir is not supported');
+-};
+-process.umask = function() { return 0; };
+-
+-},{}],11:[function(require,module,exports){
+-module.exports = function isBuffer(arg) {
+-  return arg && typeof arg === 'object'
+-    && typeof arg.copy === 'function'
+-    && typeof arg.fill === 'function'
+-    && typeof arg.readUInt8 === 'function';
+-}
+-},{}],12:[function(require,module,exports){
+-(function (process,global){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+-
+-var formatRegExp = /%[sdj%]/g;
+-exports.format = function(f) {
+-  if (!isString(f)) {
+-    var objects = [];
+-    for (var i = 0; i < arguments.length; i++) {
+-      objects.push(inspect(arguments[i]));
++    function entries(map, depth) {
++      if (depth >= keys.length) return map;
++      var array = [], sortKey = sortKeys[depth++];
++      map.forEach(function(key, keyMap) {
++        array.push({
++          key: key,
++          values: entries(keyMap, depth)
++        });
++      });
++      return sortKey ? array.sort(function(a, b) {
++        return sortKey(a.key, b.key);
++      }) : array;
+     }
+-    return objects.join(' ');
++    nest.map = function(array, mapType) {
++      return map(mapType, array, 0);
++    };
++    nest.entries = function(array) {
++      return entries(map(d3.map, array, 0), 0);
++    };
++    nest.key = function(d) {
++      keys.push(d);
++      return nest;
++    };
++    nest.sortKeys = function(order) {
++      sortKeys[keys.length - 1] = order;
++      return nest;
++    };
++    nest.sortValues = function(order) {
++      sortValues = order;
++      return nest;
++    };
++    nest.rollup = function(f) {
++      rollup = f;
++      return nest;
++    };
++    return nest;
++  };
++  d3.set = function(array) {
++    var set = new d3_Set();
++    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
++    return set;
++  };
++  function d3_Set() {
++    this._ = Object.create(null);
+   }
+-
+-  var i = 1;
+-  var args = arguments;
+-  var len = args.length;
+-  var str = String(f).replace(formatRegExp, function(x) {
+-    if (x === '%%') return '%';
+-    if (i >= len) return x;
+-    switch (x) {
+-      case '%s': return String(args[i++]);
+-      case '%d': return Number(args[i++]);
+-      case '%j':
+-        try {
+-          return JSON.stringify(args[i++]);
+-        } catch (_) {
+-          return '[Circular]';
+-        }
+-      default:
+-        return x;
++  d3_class(d3_Set, {
++    has: d3_map_has,
++    add: function(key) {
++      this._[d3_map_escape(key += "")] = true;
++      return key;
++    },
++    remove: d3_map_remove,
++    values: d3_map_keys,
++    size: d3_map_size,
++    empty: d3_map_empty,
++    forEach: function(f) {
++      for (var key in this._) f.call(this, d3_map_unescape(key));
+     }
+   });
+-  for (var x = args[i]; i < len; x = args[++i]) {
+-    if (isNull(x) || !isObject(x)) {
+-      str += ' ' + x;
+-    } else {
+-      str += ' ' + inspect(x);
+-    }
++  d3.behavior = {};
++  function d3_identity(d) {
++    return d;
+   }
+-  return str;
+-};
+-
+-
+-// Mark that a method should not be used.
+-// Returns a modified function which warns once by default.
+-// If --no-deprecation is set, then it is a no-op.
+-exports.deprecate = function(fn, msg) {
+-  // Allow for deprecating things in the process of starting up.
+-  if (isUndefined(global.process)) {
++  d3.rebind = function(target, source) {
++    var i = 1, n = arguments.length, method;
++    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
++    return target;
++  };
++  function d3_rebind(target, source, method) {
+     return function() {
+-      return exports.deprecate(fn, msg).apply(this, arguments);
++      var value = method.apply(source, arguments);
++      return value === source ? target : value;
+     };
+   }
+-
+-  if (process.noDeprecation === true) {
+-    return fn;
+-  }
+-
+-  var warned = false;
+-  function deprecated() {
+-    if (!warned) {
+-      if (process.throwDeprecation) {
+-        throw new Error(msg);
+-      } else if (process.traceDeprecation) {
+-        console.trace(msg);
+-      } else {
+-        console.error(msg);
+-      }
+-      warned = true;
++  function d3_vendorSymbol(object, name) {
++    if (name in object) return name;
++    name = name.charAt(0).toUpperCase() + name.slice(1);
++    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
++      var prefixName = d3_vendorPrefixes[i] + name;
++      if (prefixName in object) return prefixName;
+     }
+-    return fn.apply(this, arguments);
+   }
+-
+-  return deprecated;
+-};
+-
+-
+-var debugs = {};
+-var debugEnviron;
+-exports.debuglog = function(set) {
+-  if (isUndefined(debugEnviron))
+-    debugEnviron = process.env.NODE_DEBUG || '';
+-  set = set.toUpperCase();
+-  if (!debugs[set]) {
+-    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
+-      var pid = process.pid;
+-      debugs[set] = function() {
+-        var msg = exports.format.apply(exports, arguments);
+-        console.error('%s %d: %s', set, pid, msg);
+-      };
+-    } else {
+-      debugs[set] = function() {};
++  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
++  function d3_noop() {}
++  d3.dispatch = function() {
++    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
++    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
++    return dispatch;
++  };
++  function d3_dispatch() {}
++  d3_dispatch.prototype.on = function(type, listener) {
++    var i = type.indexOf("."), name = "";
++    if (i >= 0) {
++      name = type.slice(i + 1);
++      type = type.slice(0, i);
++    }
++    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
++    if (arguments.length === 2) {
++      if (listener == null) for (type in this) {
++        if (this.hasOwnProperty(type)) this[type].on(name, null);
++      }
++      return this;
+     }
+-  }
+-  return debugs[set];
+-};
+-
+-
+-/**
+- * Echos the value of a value. Trys to print the value out
+- * in the best way possible given the different types.
+- *
+- * @param {Object} obj The object to print out.
+- * @param {Object} opts Optional options object that alters the output.
+- */
+-/* legacy: obj, showHidden, depth, colors*/
+-function inspect(obj, opts) {
+-  // default options
+-  var ctx = {
+-    seen: [],
+-    stylize: stylizeNoColor
+   };
+-  // legacy...
+-  if (arguments.length >= 3) ctx.depth = arguments[2];
+-  if (arguments.length >= 4) ctx.colors = arguments[3];
+-  if (isBoolean(opts)) {
+-    // legacy...
+-    ctx.showHidden = opts;
+-  } else if (opts) {
+-    // got an "options" object
+-    exports._extend(ctx, opts);
+-  }
+-  // set default options
+-  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
+-  if (isUndefined(ctx.depth)) ctx.depth = 2;
+-  if (isUndefined(ctx.colors)) ctx.colors = false;
+-  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
+-  if (ctx.colors) ctx.stylize = stylizeWithColor;
+-  return formatValue(ctx, obj, ctx.depth);
+-}
+-exports.inspect = inspect;
+-
+-
+-// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
+-inspect.colors = {
+-  'bold' : [1, 22],
+-  'italic' : [3, 23],
+-  'underline' : [4, 24],
+-  'inverse' : [7, 27],
+-  'white' : [37, 39],
+-  'grey' : [90, 39],
+-  'black' : [30, 39],
+-  'blue' : [34, 39],
+-  'cyan' : [36, 39],
+-  'green' : [32, 39],
+-  'magenta' : [35, 39],
+-  'red' : [31, 39],
+-  'yellow' : [33, 39]
+-};
+-
+-// Don't use 'blue' not visible on cmd.exe
+-inspect.styles = {
+-  'special': 'cyan',
+-  'number': 'yellow',
+-  'boolean': 'yellow',
+-  'undefined': 'grey',
+-  'null': 'bold',
+-  'string': 'green',
+-  'date': 'magenta',
+-  // "name": intentionally not styling
+-  'regexp': 'red'
+-};
+-
+-
+-function stylizeWithColor(str, styleType) {
+-  var style = inspect.styles[styleType];
+-
+-  if (style) {
+-    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
+-           '\u001b[' + inspect.colors[style][1] + 'm';
+-  } else {
+-    return str;
+-  }
+-}
+-
+-
+-function stylizeNoColor(str, styleType) {
+-  return str;
+-}
+-
+-
+-function arrayToHash(array) {
+-  var hash = {};
+-
+-  array.forEach(function(val, idx) {
+-    hash[val] = true;
+-  });
+-
+-  return hash;
+-}
+-
+-
+-function formatValue(ctx, value, recurseTimes) {
+-  // Provide a hook for user-specified inspect functions.
+-  // Check that value is an object with an inspect function on it
+-  if (ctx.customInspect &&
+-      value &&
+-      isFunction(value.inspect) &&
+-      // Filter out the util module, it's inspect function is special
+-      value.inspect !== exports.inspect &&
+-      // Also filter out any prototype objects using the circular check.
+-      !(value.constructor && value.constructor.prototype === value)) {
+-    var ret = value.inspect(recurseTimes, ctx);
+-    if (!isString(ret)) {
+-      ret = formatValue(ctx, ret, recurseTimes);
++  function d3_dispatch_event(dispatch) {
++    var listeners = [], listenerByName = new d3_Map();
++    function event() {
++      var z = listeners, i = -1, n = z.length, l;
++      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
++      return dispatch;
+     }
+-    return ret;
++    event.on = function(name, listener) {
++      var l = listenerByName.get(name), i;
++      if (arguments.length < 2) return l && l.on;
++      if (l) {
++        l.on = null;
++        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
++        listenerByName.remove(name);
++      }
++      if (listener) listeners.push(listenerByName.set(name, {
++        on: listener
++      }));
++      return dispatch;
++    };
++    return event;
+   }
+-
+-  // Primitive types cannot have properties
+-  var primitive = formatPrimitive(ctx, value);
+-  if (primitive) {
+-    return primitive;
++  d3.event = null;
++  function d3_eventPreventDefault() {
++    d3.event.preventDefault();
+   }
+-
+-  // Look up the keys of the object.
+-  var keys = Object.keys(value);
+-  var visibleKeys = arrayToHash(keys);
+-
+-  if (ctx.showHidden) {
+-    keys = Object.getOwnPropertyNames(value);
++  function d3_eventSource() {
++    var e = d3.event, s;
++    while (s = e.sourceEvent) e = s;
++    return e;
+   }
+-
+-  // IE doesn't make error fields non-enumerable
+-  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
+-  if (isError(value)
+-      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
+-    return formatError(value);
++  function d3_eventDispatch(target) {
++    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
++    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
++    dispatch.of = function(thiz, argumentz) {
++      return function(e1) {
++        try {
++          var e0 = e1.sourceEvent = d3.event;
++          e1.target = target;
++          d3.event = e1;
++          dispatch[e1.type].apply(thiz, argumentz);
++        } finally {
++          d3.event = e0;
++        }
++      };
++    };
++    return dispatch;
+   }
+-
+-  // Some type of object without properties can be shortcutted.
+-  if (keys.length === 0) {
+-    if (isFunction(value)) {
+-      var name = value.name ? ': ' + value.name : '';
+-      return ctx.stylize('[Function' + name + ']', 'special');
+-    }
+-    if (isRegExp(value)) {
+-      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
+-    }
+-    if (isDate(value)) {
+-      return ctx.stylize(Date.prototype.toString.call(value), 'date');
+-    }
+-    if (isError(value)) {
+-      return formatError(value);
+-    }
++  d3.requote = function(s) {
++    return s.replace(d3_requote_re, "\\$&");
++  };
++  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
++  var d3_subclass = {}.__proto__ ? function(object, prototype) {
++    object.__proto__ = prototype;
++  } : function(object, prototype) {
++    for (var property in prototype) object[property] = prototype[property];
++  };
++  function d3_selection(groups) {
++    d3_subclass(groups, d3_selectionPrototype);
++    return groups;
+   }
+-
+-  var base = '', array = false, braces = ['{', '}'];
+-
+-  // Make Array say that they are Array
+-  if (isArray(value)) {
+-    array = true;
+-    braces = ['[', ']'];
+-  }
+-
+-  // Make functions say that they are functions
+-  if (isFunction(value)) {
+-    var n = value.name ? ': ' + value.name : '';
+-    base = ' [Function' + n + ']';
++  var d3_select = function(s, n) {
++    return n.querySelector(s);
++  }, d3_selectAll = function(s, n) {
++    return n.querySelectorAll(s);
++  }, d3_selectMatches = function(n, s) {
++    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
++    d3_selectMatches = function(n, s) {
++      return d3_selectMatcher.call(n, s);
++    };
++    return d3_selectMatches(n, s);
++  };
++  if (typeof Sizzle === "function") {
++    d3_select = function(s, n) {
++      return Sizzle(s, n)[0] || null;
++    };
++    d3_selectAll = Sizzle;
++    d3_selectMatches = Sizzle.matchesSelector;
+   }
+-
+-  // Make RegExps say that they are RegExps
+-  if (isRegExp(value)) {
+-    base = ' ' + RegExp.prototype.toString.call(value);
++  d3.selection = function() {
++    return d3.select(d3_document.documentElement);
++  };
++  var d3_selectionPrototype = d3.selection.prototype = [];
++  d3_selectionPrototype.select = function(selector) {
++    var subgroups = [], subgroup, subnode, group, node;
++    selector = d3_selection_selector(selector);
++    for (var j = -1, m = this.length; ++j < m; ) {
++      subgroups.push(subgroup = []);
++      subgroup.parentNode = (group = this[j]).parentNode;
++      for (var i = -1, n = group.length; ++i < n; ) {
++        if (node = group[i]) {
++          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
++          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
++        } else {
++          subgroup.push(null);
++        }
++      }
++    }
++    return d3_selection(subgroups);
++  };
++  function d3_selection_selector(selector) {
++    return typeof selector === "function" ? selector : function() {
++      return d3_select(selector, this);
++    };
+   }
+-
+-  // Make dates with properties first say the date
+-  if (isDate(value)) {
+-    base = ' ' + Date.prototype.toUTCString.call(value);
++  d3_selectionPrototype.selectAll = function(selector) {
++    var subgroups = [], subgroup, node;
++    selector = d3_selection_selectorAll(selector);
++    for (var j = -1, m = this.length; ++j < m; ) {
++      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
++        if (node = group[i]) {
++          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
++          subgroup.parentNode = node;
++        }
++      }
++    }
++    return d3_selection(subgroups);
++  };
++  function d3_selection_selectorAll(selector) {
++    return typeof selector === "function" ? selector : function() {
++      return d3_selectAll(selector, this);
++    };
+   }
+-
+-  // Make error with message first say the error
+-  if (isError(value)) {
+-    base = ' ' + formatError(value);
++  var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
++  var d3_nsPrefix = {
++    svg: "http://www.w3.org/2000/svg",
++    xhtml: d3_nsXhtml,
++    xlink: "http://www.w3.org/1999/xlink",
++    xml: "http://www.w3.org/XML/1998/namespace",
++    xmlns: "http://www.w3.org/2000/xmlns/"
++  };
++  d3.ns = {
++    prefix: d3_nsPrefix,
++    qualify: function(name) {
++      var i = name.indexOf(":"), prefix = name;
++      if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
++      return d3_nsPrefix.hasOwnProperty(prefix) ? {
++        space: d3_nsPrefix[prefix],
++        local: name
++      } : name;
++    }
++  };
++  d3_selectionPrototype.attr = function(name, value) {
++    if (arguments.length < 2) {
++      if (typeof name === "string") {
++        var node = this.node();
++        name = d3.ns.qualify(name);
++        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
++      }
++      for (value in name) this.each(d3_selection_attr(value, name[value]));
++      return this;
++    }
++    return this.each(d3_selection_attr(name, value));
++  };
++  function d3_selection_attr(name, value) {
++    name = d3.ns.qualify(name);
++    function attrNull() {
++      this.removeAttribute(name);
++    }
++    function attrNullNS() {
++      this.removeAttributeNS(name.space, name.local);
++    }
++    function attrConstant() {
++      this.setAttribute(name, value);
++    }
++    function attrConstantNS() {
++      this.setAttributeNS(name.space, name.local, value);
++    }
++    function attrFunction() {
++      var x = value.apply(this, arguments);
++      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
++    }
++    function attrFunctionNS() {
++      var x = value.apply(this, arguments);
++      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
++    }
++    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
+   }
+-
+-  if (keys.length === 0 && (!array || value.length == 0)) {
+-    return braces[0] + base + braces[1];
++  function d3_collapse(s) {
++    return s.trim().replace(/\s+/g, " ");
+   }
+-
+-  if (recurseTimes < 0) {
+-    if (isRegExp(value)) {
+-      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
+-    } else {
+-      return ctx.stylize('[Object]', 'special');
++  d3_selectionPrototype.classed = function(name, value) {
++    if (arguments.length < 2) {
++      if (typeof name === "string") {
++        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
++        if (value = node.classList) {
++          while (++i < n) if (!value.contains(name[i])) return false;
++        } else {
++          value = node.getAttribute("class");
++          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
++        }
++        return true;
++      }
++      for (value in name) this.each(d3_selection_classed(value, name[value]));
++      return this;
+     }
++    return this.each(d3_selection_classed(name, value));
++  };
++  function d3_selection_classedRe(name) {
++    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
+   }
+-
+-  ctx.seen.push(value);
+-
+-  var output;
+-  if (array) {
+-    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
+-  } else {
+-    output = keys.map(function(key) {
+-      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
+-    });
++  function d3_selection_classes(name) {
++    return (name + "").trim().split(/^|\s+/);
+   }
+-
+-  ctx.seen.pop();
+-
+-  return reduceToSingleString(output, base, braces);
+-}
+-
+-
+-function formatPrimitive(ctx, value) {
+-  if (isUndefined(value))
+-    return ctx.stylize('undefined', 'undefined');
+-  if (isString(value)) {
+-    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
+-                                             .replace(/'/g, "\\'")
+-                                             .replace(/\\"/g, '"') + '\'';
+-    return ctx.stylize(simple, 'string');
++  function d3_selection_classed(name, value) {
++    name = d3_selection_classes(name).map(d3_selection_classedName);
++    var n = name.length;
++    function classedConstant() {
++      var i = -1;
++      while (++i < n) name[i](this, value);
++    }
++    function classedFunction() {
++      var i = -1, x = value.apply(this, arguments);
++      while (++i < n) name[i](this, x);
++    }
++    return typeof value === "function" ? classedFunction : classedConstant;
+   }
+-  if (isNumber(value))
+-    return ctx.stylize('' + value, 'number');
+-  if (isBoolean(value))
+-    return ctx.stylize('' + value, 'boolean');
+-  // For some reason typeof null is "object", so special case here.
+-  if (isNull(value))
+-    return ctx.stylize('null', 'null');
+-}
+-
+-
+-function formatError(value) {
+-  return '[' + Error.prototype.toString.call(value) + ']';
+-}
+-
+-
+-function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
+-  var output = [];
+-  for (var i = 0, l = value.length; i < l; ++i) {
+-    if (hasOwnProperty(value, String(i))) {
+-      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
+-          String(i), true));
+-    } else {
+-      output.push('');
++  function d3_selection_classedName(name) {
++    var re = d3_selection_classedRe(name);
++    return function(node, value) {
++      if (c = node.classList) return value ? c.add(name) : c.remove(name);
++      var c = node.getAttribute("class") || "";
++      if (value) {
++        re.lastIndex = 0;
++        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
++      } else {
++        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
++      }
++    };
++  }
++  d3_selectionPrototype.style = function(name, value, priority) {
++    var n = arguments.length;
++    if (n < 3) {
++      if (typeof name !== "string") {
++        if (n < 2) value = "";
++        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
++        return this;
++      }
++      if (n < 2) {
++        var node = this.node();
++        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
++      }
++      priority = "";
++    }
++    return this.each(d3_selection_style(name, value, priority));
++  };
++  function d3_selection_style(name, value, priority) {
++    function styleNull() {
++      this.style.removeProperty(name);
++    }
++    function styleConstant() {
++      this.style.setProperty(name, value, priority);
++    }
++    function styleFunction() {
++      var x = value.apply(this, arguments);
++      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
+     }
++    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
+   }
+-  keys.forEach(function(key) {
+-    if (!key.match(/^\d+$/)) {
+-      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
+-          key, true));
++  d3_selectionPrototype.property = function(name, value) {
++    if (arguments.length < 2) {
++      if (typeof name === "string") return this.node()[name];
++      for (value in name) this.each(d3_selection_property(value, name[value]));
++      return this;
+     }
+-  });
+-  return output;
+-}
+-
+-
+-function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
+-  var name, str, desc;
+-  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
+-  if (desc.get) {
+-    if (desc.set) {
+-      str = ctx.stylize('[Getter/Setter]', 'special');
+-    } else {
+-      str = ctx.stylize('[Getter]', 'special');
++    return this.each(d3_selection_property(name, value));
++  };
++  function d3_selection_property(name, value) {
++    function propertyNull() {
++      delete this[name];
+     }
+-  } else {
+-    if (desc.set) {
+-      str = ctx.stylize('[Setter]', 'special');
++    function propertyConstant() {
++      this[name] = value;
++    }
++    function propertyFunction() {
++      var x = value.apply(this, arguments);
++      if (x == null) delete this[name]; else this[name] = x;
+     }
++    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
+   }
+-  if (!hasOwnProperty(visibleKeys, key)) {
+-    name = '[' + key + ']';
++  d3_selectionPrototype.text = function(value) {
++    return arguments.length ? this.each(typeof value === "function" ? function() {
++      var v = value.apply(this, arguments);
++      this.textContent = v == null ? "" : v;
++    } : value == null ? function() {
++      this.textContent = "";
++    } : function() {
++      this.textContent = value;
++    }) : this.node().textContent;
++  };
++  d3_selectionPrototype.html = function(value) {
++    return arguments.length ? this.each(typeof value === "function" ? function() {
++      var v = value.apply(this, arguments);
++      this.innerHTML = v == null ? "" : v;
++    } : value == null ? function() {
++      this.innerHTML = "";
++    } : function() {
++      this.innerHTML = value;
++    }) : this.node().innerHTML;
++  };
++  d3_selectionPrototype.append = function(name) {
++    name = d3_selection_creator(name);
++    return this.select(function() {
++      return this.appendChild(name.apply(this, arguments));
++    });
++  };
++  function d3_selection_creator(name) {
++    function create() {
++      var document = this.ownerDocument, namespace = this.namespaceURI;
++      return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
++    }
++    function createNS() {
++      return this.ownerDocument.createElementNS(name.space, name.local);
++    }
++    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
+   }
+-  if (!str) {
+-    if (ctx.seen.indexOf(desc.value) < 0) {
+-      if (isNull(recurseTimes)) {
+-        str = formatValue(ctx, desc.value, null);
+-      } else {
+-        str = formatValue(ctx, desc.value, recurseTimes - 1);
++  d3_selectionPrototype.insert = function(name, before) {
++    name = d3_selection_creator(name);
++    before = d3_selection_selector(before);
++    return this.select(function() {
++      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
++    });
++  };
++  d3_selectionPrototype.remove = function() {
++    return this.each(d3_selectionRemove);
++  };
++  function d3_selectionRemove() {
++    var parent = this.parentNode;
++    if (parent) parent.removeChild(this);
++  }
++  d3_selectionPrototype.data = function(value, key) {
++    var i = -1, n = this.length, group, node;
++    if (!arguments.length) {
++      value = new Array(n = (group = this[0]).length);
++      while (++i < n) {
++        if (node = group[i]) {
++          value[i] = node.__data__;
++        }
+       }
+-      if (str.indexOf('\n') > -1) {
+-        if (array) {
+-          str = str.split('\n').map(function(line) {
+-            return '  ' + line;
+-          }).join('\n').substr(2);
+-        } else {
+-          str = '\n' + str.split('\n').map(function(line) {
+-            return '   ' + line;
+-          }).join('\n');
++      return value;
++    }
++    function bind(group, groupData) {
++      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
++      if (key) {
++        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
++        for (i = -1; ++i < n; ) {
++          if (node = group[i]) {
++            if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
++              exitNodes[i] = node;
++            } else {
++              nodeByKeyValue.set(keyValue, node);
++            }
++            keyValues[i] = keyValue;
++          }
++        }
++        for (i = -1; ++i < m; ) {
++          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
++            enterNodes[i] = d3_selection_dataNode(nodeData);
++          } else if (node !== true) {
++            updateNodes[i] = node;
++            node.__data__ = nodeData;
++          }
++          nodeByKeyValue.set(keyValue, true);
++        }
++        for (i = -1; ++i < n; ) {
++          if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
++            exitNodes[i] = group[i];
++          }
++        }
++      } else {
++        for (i = -1; ++i < n0; ) {
++          node = group[i];
++          nodeData = groupData[i];
++          if (node) {
++            node.__data__ = nodeData;
++            updateNodes[i] = node;
++          } else {
++            enterNodes[i] = d3_selection_dataNode(nodeData);
++          }
++        }
++        for (;i < m; ++i) {
++          enterNodes[i] = d3_selection_dataNode(groupData[i]);
++        }
++        for (;i < n; ++i) {
++          exitNodes[i] = group[i];
+         }
+       }
++      enterNodes.update = updateNodes;
++      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
++      enter.push(enterNodes);
++      update.push(updateNodes);
++      exit.push(exitNodes);
++    }
++    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
++    if (typeof value === "function") {
++      while (++i < n) {
++        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
++      }
+     } else {
+-      str = ctx.stylize('[Circular]', 'special');
++      while (++i < n) {
++        bind(group = this[i], value);
++      }
+     }
++    update.enter = function() {
++      return enter;
++    };
++    update.exit = function() {
++      return exit;
++    };
++    return update;
++  };
++  function d3_selection_dataNode(data) {
++    return {
++      __data__: data
++    };
+   }
+-  if (isUndefined(name)) {
+-    if (array && key.match(/^\d+$/)) {
+-      return str;
++  d3_selectionPrototype.datum = function(value) {
++    return arguments.length ? this.property("__data__", value) : this.property("__data__");
++  };
++  d3_selectionPrototype.filter = function(filter) {
++    var subgroups = [], subgroup, group, node;
++    if (typeof filter !== "function") filter = d3_selection_filter(filter);
++    for (var j = 0, m = this.length; j < m; j++) {
++      subgroups.push(subgroup = []);
++      subgroup.parentNode = (group = this[j]).parentNode;
++      for (var i = 0, n = group.length; i < n; i++) {
++        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
++          subgroup.push(node);
++        }
++      }
+     }
+-    name = JSON.stringify('' + key);
+-    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
+-      name = name.substr(1, name.length - 2);
+-      name = ctx.stylize(name, 'name');
+-    } else {
+-      name = name.replace(/'/g, "\\'")
+-                 .replace(/\\"/g, '"')
+-                 .replace(/(^"|"$)/g, "'");
+-      name = ctx.stylize(name, 'string');
++    return d3_selection(subgroups);
++  };
++  function d3_selection_filter(selector) {
++    return function() {
++      return d3_selectMatches(this, selector);
++    };
++  }
++  d3_selectionPrototype.order = function() {
++    for (var j = -1, m = this.length; ++j < m; ) {
++      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
++        if (node = group[i]) {
++          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
++          next = node;
++        }
++      }
+     }
++    return this;
++  };
++  d3_selectionPrototype.sort = function(comparator) {
++    comparator = d3_selection_sortComparator.apply(this, arguments);
++    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
++    return this.order();
++  };
++  function d3_selection_sortComparator(comparator) {
++    if (!arguments.length) comparator = d3_ascending;
++    return function(a, b) {
++      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
++    };
+   }
+-
+-  return name + ': ' + str;
+-}
+-
+-
+-function reduceToSingleString(output, base, braces) {
+-  var numLinesEst = 0;
+-  var length = output.reduce(function(prev, cur) {
+-    numLinesEst++;
+-    if (cur.indexOf('\n') >= 0) numLinesEst++;
+-    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
+-  }, 0);
+-
+-  if (length > 60) {
+-    return braces[0] +
+-           (base === '' ? '' : base + '\n ') +
+-           ' ' +
+-           output.join(',\n  ') +
+-           ' ' +
+-           braces[1];
+-  }
+-
+-  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
+-}
+-
+-
+-// NOTE: These type checking functions intentionally don't use `instanceof`
+-// because it is fragile and can be easily faked with `Object.create()`.
+-function isArray(ar) {
+-  return Array.isArray(ar);
+-}
+-exports.isArray = isArray;
+-
+-function isBoolean(arg) {
+-  return typeof arg === 'boolean';
+-}
+-exports.isBoolean = isBoolean;
+-
+-function isNull(arg) {
+-  return arg === null;
+-}
+-exports.isNull = isNull;
+-
+-function isNullOrUndefined(arg) {
+-  return arg == null;
+-}
+-exports.isNullOrUndefined = isNullOrUndefined;
+-
+-function isNumber(arg) {
+-  return typeof arg === 'number';
+-}
+-exports.isNumber = isNumber;
+-
+-function isString(arg) {
+-  return typeof arg === 'string';
+-}
+-exports.isString = isString;
+-
+-function isSymbol(arg) {
+-  return typeof arg === 'symbol';
+-}
+-exports.isSymbol = isSymbol;
+-
+-function isUndefined(arg) {
+-  return arg === void 0;
+-}
+-exports.isUndefined = isUndefined;
+-
+-function isRegExp(re) {
+-  return isObject(re) && objectToString(re) === '[object RegExp]';
+-}
+-exports.isRegExp = isRegExp;
+-
+-function isObject(arg) {
+-  return typeof arg === 'object' && arg !== null;
+-}
+-exports.isObject = isObject;
+-
+-function isDate(d) {
+-  return isObject(d) && objectToString(d) === '[object Date]';
+-}
+-exports.isDate = isDate;
+-
+-function isError(e) {
+-  return isObject(e) &&
+-      (objectToString(e) === '[object Error]' || e instanceof Error);
+-}
+-exports.isError = isError;
+-
+-function isFunction(arg) {
+-  return typeof arg === 'function';
+-}
+-exports.isFunction = isFunction;
+-
+-function isPrimitive(arg) {
+-  return arg === null ||
+-         typeof arg === 'boolean' ||
+-         typeof arg === 'number' ||
+-         typeof arg === 'string' ||
+-         typeof arg === 'symbol' ||  // ES6 symbol
+-         typeof arg === 'undefined';
+-}
+-exports.isPrimitive = isPrimitive;
+-
+-exports.isBuffer = require('./support/isBuffer');
+-
+-function objectToString(o) {
+-  return Object.prototype.toString.call(o);
+-}
+-
+-
+-function pad(n) {
+-  return n < 10 ? '0' + n.toString(10) : n.toString(10);
+-}
+-
+-
+-var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
+-              'Oct', 'Nov', 'Dec'];
+-
+-// 26 Feb 16:19:34
+-function timestamp() {
+-  var d = new Date();
+-  var time = [pad(d.getHours()),
+-              pad(d.getMinutes()),
+-              pad(d.getSeconds())].join(':');
+-  return [d.getDate(), months[d.getMonth()], time].join(' ');
+-}
+-
+-
+-// log is just a thin wrapper to console.log that prepends a timestamp
+-exports.log = function() {
+-  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
+-};
+-
+-
+-/**
+- * Inherit the prototype methods from one constructor into another.
+- *
+- * The Function.prototype.inherits from lang.js rewritten as a standalone
+- * function (not on Function.prototype). NOTE: If this file is to be loaded
+- * during bootstrapping this function needs to be rewritten using some native
+- * functions as prototype setup using normal JavaScript does not work as
+- * expected during bootstrapping (see mirror.js in r114903).
+- *
+- * @param {function} ctor Constructor function which needs to inherit the
+- *     prototype.
+- * @param {function} superCtor Constructor function to inherit prototype from.
+- */
+-exports.inherits = require('inherits');
+-
+-exports._extend = function(origin, add) {
+-  // Don't do anything if add isn't an object
+-  if (!add || !isObject(add)) return origin;
+-
+-  var keys = Object.keys(add);
+-  var i = keys.length;
+-  while (i--) {
+-    origin[keys[i]] = add[keys[i]];
+-  }
+-  return origin;
+-};
+-
+-function hasOwnProperty(obj, prop) {
+-  return Object.prototype.hasOwnProperty.call(obj, prop);
+-}
+-
+-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"./support/isBuffer":11,"_process":10,"inherits":8}],13:[function(require,module,exports){
+-!function() {
+-  var d3 = {
+-    version: "3.5.16"
+-  };
+-  var d3_arraySlice = [].slice, d3_array = function(list) {
+-    return d3_arraySlice.call(list);
++  d3_selectionPrototype.each = function(callback) {
++    return d3_selection_each(this, function(node, i, j) {
++      callback.call(node, node.__data__, i, j);
++    });
+   };
+-  var d3_document = this.document;
+-  function d3_documentElement(node) {
+-    return node && (node.ownerDocument || node.document || node).documentElement;
+-  }
+-  function d3_window(node) {
+-    return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
+-  }
+-  if (d3_document) {
+-    try {
+-      d3_array(d3_document.documentElement.childNodes)[0].nodeType;
+-    } catch (e) {
+-      d3_array = function(list) {
+-        var i = list.length, array = new Array(i);
+-        while (i--) array[i] = list[i];
+-        return array;
+-      };
++  function d3_selection_each(groups, callback) {
++    for (var j = 0, m = groups.length; j < m; j++) {
++      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
++        if (node = group[i]) callback(node, i, j);
++      }
+     }
++    return groups;
+   }
+-  if (!Date.now) Date.now = function() {
+-    return +new Date();
++  d3_selectionPrototype.call = function(callback) {
++    var args = d3_array(arguments);
++    callback.apply(args[0] = this, args);
++    return this;
+   };
+-  if (d3_document) {
+-    try {
+-      d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
+-    } catch (error) {
+-      var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
+-      d3_element_prototype.setAttribute = function(name, value) {
+-        d3_element_setAttribute.call(this, name, value + "");
+-      };
+-      d3_element_prototype.setAttributeNS = function(space, local, value) {
+-        d3_element_setAttributeNS.call(this, space, local, value + "");
+-      };
+-      d3_style_prototype.setProperty = function(name, value, priority) {
+-        d3_style_setProperty.call(this, name, value + "", priority);
+-      };
+-    }
+-  }
+-  d3.ascending = d3_ascending;
+-  function d3_ascending(a, b) {
+-    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
+-  }
+-  d3.descending = function(a, b) {
+-    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
++  d3_selectionPrototype.empty = function() {
++    return !this.node();
+   };
+-  d3.min = function(array, f) {
+-    var i = -1, n = array.length, a, b;
+-    if (arguments.length === 1) {
+-      while (++i < n) if ((b = array[i]) != null && b >= b) {
+-        a = b;
+-        break;
+-      }
+-      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
+-    } else {
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
+-        a = b;
+-        break;
++  d3_selectionPrototype.node = function() {
++    for (var j = 0, m = this.length; j < m; j++) {
++      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
++        var node = group[i];
++        if (node) return node;
+       }
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
+     }
+-    return a;
++    return null;
+   };
+-  d3.max = function(array, f) {
+-    var i = -1, n = array.length, a, b;
+-    if (arguments.length === 1) {
+-      while (++i < n) if ((b = array[i]) != null && b >= b) {
+-        a = b;
+-        break;
+-      }
+-      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
+-    } else {
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
+-        a = b;
+-        break;
+-      }
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
+-    }
+-    return a;
++  d3_selectionPrototype.size = function() {
++    var n = 0;
++    d3_selection_each(this, function() {
++      ++n;
++    });
++    return n;
+   };
+-  d3.extent = function(array, f) {
+-    var i = -1, n = array.length, a, b, c;
+-    if (arguments.length === 1) {
+-      while (++i < n) if ((b = array[i]) != null && b >= b) {
+-        a = c = b;
+-        break;
+-      }
+-      while (++i < n) if ((b = array[i]) != null) {
+-        if (a > b) a = b;
+-        if (c < b) c = b;
+-      }
+-    } else {
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
+-        a = c = b;
+-        break;
+-      }
+-      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
+-        if (a > b) a = b;
+-        if (c < b) c = b;
++  function d3_selection_enter(selection) {
++    d3_subclass(selection, d3_selection_enterPrototype);
++    return selection;
++  }
++  var d3_selection_enterPrototype = [];
++  d3.selection.enter = d3_selection_enter;
++  d3.selection.enter.prototype = d3_selection_enterPrototype;
++  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
++  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
++  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
++  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
++  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
++  d3_selection_enterPrototype.select = function(selector) {
++    var subgroups = [], subgroup, subnode, upgroup, group, node;
++    for (var j = -1, m = this.length; ++j < m; ) {
++      upgroup = (group = this[j]).update;
++      subgroups.push(subgroup = []);
++      subgroup.parentNode = group.parentNode;
++      for (var i = -1, n = group.length; ++i < n; ) {
++        if (node = group[i]) {
++          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
++          subnode.__data__ = node.__data__;
++        } else {
++          subgroup.push(null);
++        }
+       }
+     }
+-    return [ a, c ];
++    return d3_selection(subgroups);
+   };
+-  function d3_number(x) {
+-    return x === null ? NaN : +x;
+-  }
+-  function d3_numeric(x) {
+-    return !isNaN(x);
++  d3_selection_enterPrototype.insert = function(name, before) {
++    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
++    return d3_selectionPrototype.insert.call(this, name, before);
++  };
++  function d3_selection_enterInsertBefore(enter) {
++    var i0, j0;
++    return function(d, i, j) {
++      var group = enter[j].update, n = group.length, node;
++      if (j != j0) j0 = j, i0 = 0;
++      if (i >= i0) i0 = i + 1;
++      while (!(node = group[i0]) && ++i0 < n) ;
++      return node;
++    };
+   }
+-  d3.sum = function(array, f) {
+-    var s = 0, n = array.length, a, i = -1;
+-    if (arguments.length === 1) {
+-      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
++  d3.select = function(node) {
++    var group;
++    if (typeof node === "string") {
++      group = [ d3_select(node, d3_document) ];
++      group.parentNode = d3_document.documentElement;
+     } else {
+-      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
++      group = [ node ];
++      group.parentNode = d3_documentElement(node);
+     }
+-    return s;
++    return d3_selection([ group ]);
+   };
+-  d3.mean = function(array, f) {
+-    var s = 0, n = array.length, a, i = -1, j = n;
+-    if (arguments.length === 1) {
+-      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
++  d3.selectAll = function(nodes) {
++    var group;
++    if (typeof nodes === "string") {
++      group = d3_array(d3_selectAll(nodes, d3_document));
++      group.parentNode = d3_document.documentElement;
+     } else {
+-      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
++      group = d3_array(nodes);
++      group.parentNode = null;
+     }
+-    if (j) return s / j;
+-  };
+-  d3.quantile = function(values, p) {
+-    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
+-    return e ? v + e * (values[h] - v) : v;
++    return d3_selection([ group ]);
+   };
+-  d3.median = function(array, f) {
+-    var numbers = [], n = array.length, a, i = -1;
+-    if (arguments.length === 1) {
+-      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
+-    } else {
+-      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
++  d3_selectionPrototype.on = function(type, listener, capture) {
++    var n = arguments.length;
++    if (n < 3) {
++      if (typeof type !== "string") {
++        if (n < 2) listener = false;
++        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
++        return this;
++      }
++      if (n < 2) return (n = this.node()["__on" + type]) && n._;
++      capture = false;
+     }
+-    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
++    return this.each(d3_selection_on(type, listener, capture));
+   };
+-  d3.variance = function(array, f) {
+-    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
+-    if (arguments.length === 1) {
+-      while (++i < n) {
+-        if (d3_numeric(a = d3_number(array[i]))) {
+-          d = a - m;
+-          m += d / ++j;
+-          s += d * (a - m);
+-        }
++  function d3_selection_on(type, listener, capture) {
++    var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
++    if (i > 0) type = type.slice(0, i);
++    var filter = d3_selection_onFilters.get(type);
++    if (filter) type = filter, wrap = d3_selection_onFilter;
++    function onRemove() {
++      var l = this[name];
++      if (l) {
++        this.removeEventListener(type, l, l.$);
++        delete this[name];
+       }
+-    } else {
+-      while (++i < n) {
+-        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
+-          d = a - m;
+-          m += d / ++j;
+-          s += d * (a - m);
++    }
++    function onAdd() {
++      var l = wrap(listener, d3_array(arguments));
++      onRemove.call(this);
++      this.addEventListener(type, this[name] = l, l.$ = capture);
++      l._ = listener;
++    }
++    function removeAll() {
++      var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
++      for (var name in this) {
++        if (match = name.match(re)) {
++          var l = this[name];
++          this.removeEventListener(match[1], l, l.$);
++          delete this[name];
+         }
+       }
+     }
+-    if (j > 1) return s / (j - 1);
+-  };
+-  d3.deviation = function() {
+-    var v = d3.variance.apply(this, arguments);
+-    return v ? Math.sqrt(v) : v;
+-  };
+-  function d3_bisector(compare) {
+-    return {
+-      left: function(a, x, lo, hi) {
+-        if (arguments.length < 3) lo = 0;
+-        if (arguments.length < 4) hi = a.length;
+-        while (lo < hi) {
+-          var mid = lo + hi >>> 1;
+-          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
+-        }
+-        return lo;
+-      },
+-      right: function(a, x, lo, hi) {
+-        if (arguments.length < 3) lo = 0;
+-        if (arguments.length < 4) hi = a.length;
+-        while (lo < hi) {
+-          var mid = lo + hi >>> 1;
+-          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
+-        }
+-        return lo;
++    return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
++  }
++  var d3_selection_onFilters = d3.map({
++    mouseenter: "mouseover",
++    mouseleave: "mouseout"
++  });
++  if (d3_document) {
++    d3_selection_onFilters.forEach(function(k) {
++      if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
++    });
++  }
++  function d3_selection_onListener(listener, argumentz) {
++    return function(e) {
++      var o = d3.event;
++      d3.event = e;
++      argumentz[0] = this.__data__;
++      try {
++        listener.apply(this, argumentz);
++      } finally {
++        d3.event = o;
+       }
+     };
+   }
+-  var d3_bisect = d3_bisector(d3_ascending);
+-  d3.bisectLeft = d3_bisect.left;
+-  d3.bisect = d3.bisectRight = d3_bisect.right;
+-  d3.bisector = function(f) {
+-    return d3_bisector(f.length === 1 ? function(d, x) {
+-      return d3_ascending(f(d), x);
+-    } : f);
+-  };
+-  d3.shuffle = function(array, i0, i1) {
+-    if ((m = arguments.length) < 3) {
+-      i1 = array.length;
+-      if (m < 2) i0 = 0;
++  function d3_selection_onFilter(listener, argumentz) {
++    var l = d3_selection_onListener(listener, argumentz);
++    return function(e) {
++      var target = this, related = e.relatedTarget;
++      if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
++        l.call(target, e);
++      }
++    };
++  }
++  var d3_event_dragSelect, d3_event_dragId = 0;
++  function d3_event_dragSuppress(node) {
++    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
++    if (d3_event_dragSelect == null) {
++      d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
+     }
+-    var m = i1 - i0, t, i;
+-    while (m) {
+-      i = Math.random() * m-- | 0;
+-      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
++    if (d3_event_dragSelect) {
++      var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
++      style[d3_event_dragSelect] = "none";
+     }
+-    return array;
++    return function(suppressClick) {
++      w.on(name, null);
++      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
++      if (suppressClick) {
++        var off = function() {
++          w.on(click, null);
++        };
++        w.on(click, function() {
++          d3_eventPreventDefault();
++          off();
++        }, true);
++        setTimeout(off, 0);
++      }
++    };
++  }
++  d3.mouse = function(container) {
++    return d3_mousePoint(container, d3_eventSource());
+   };
+-  d3.permute = function(array, indexes) {
+-    var i = indexes.length, permutes = new Array(i);
+-    while (i--) permutes[i] = array[indexes[i]];
+-    return permutes;
+-  };
+-  d3.pairs = function(array) {
+-    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
+-    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
+-    return pairs;
+-  };
+-  d3.transpose = function(matrix) {
+-    if (!(n = matrix.length)) return [];
+-    for (var i = -1, m = d3.min(matrix, d3_transposeLength), transpose = new Array(m); ++i < m; ) {
+-      for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n; ) {
+-        row[j] = matrix[j][i];
++  var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
++  function d3_mousePoint(container, e) {
++    if (e.changedTouches) e = e.changedTouches[0];
++    var svg = container.ownerSVGElement || container;
++    if (svg.createSVGPoint) {
++      var point = svg.createSVGPoint();
++      if (d3_mouse_bug44083 < 0) {
++        var window = d3_window(container);
++        if (window.scrollX || window.scrollY) {
++          svg = d3.select("body").append("svg").style({
++            position: "absolute",
++            top: 0,
++            left: 0,
++            margin: 0,
++            padding: 0,
++            border: "none"
++          }, "important");
++          var ctm = svg[0][0].getScreenCTM();
++          d3_mouse_bug44083 = !(ctm.f || ctm.e);
++          svg.remove();
++        }
+       }
++      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX, 
++      point.y = e.clientY;
++      point = point.matrixTransform(container.getScreenCTM().inverse());
++      return [ point.x, point.y ];
+     }
+-    return transpose;
+-  };
+-  function d3_transposeLength(d) {
+-    return d.length;
++    var rect = container.getBoundingClientRect();
++    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
+   }
+-  d3.zip = function() {
+-    return d3.transpose(arguments);
+-  };
+-  d3.keys = function(map) {
+-    var keys = [];
+-    for (var key in map) keys.push(key);
+-    return keys;
+-  };
+-  d3.values = function(map) {
+-    var values = [];
+-    for (var key in map) values.push(map[key]);
+-    return values;
+-  };
+-  d3.entries = function(map) {
+-    var entries = [];
+-    for (var key in map) entries.push({
+-      key: key,
+-      value: map[key]
+-    });
+-    return entries;
+-  };
+-  d3.merge = function(arrays) {
+-    var n = arrays.length, m, i = -1, j = 0, merged, array;
+-    while (++i < n) j += arrays[i].length;
+-    merged = new Array(j);
+-    while (--n >= 0) {
+-      array = arrays[n];
+-      m = array.length;
+-      while (--m >= 0) {
+-        merged[--j] = array[m];
++  d3.touch = function(container, touches, identifier) {
++    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
++    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
++      if ((touch = touches[i]).identifier === identifier) {
++        return d3_mousePoint(container, touch);
+       }
+     }
+-    return merged;
+   };
+-  var abs = Math.abs;
+-  d3.range = function(start, stop, step) {
+-    if (arguments.length < 3) {
+-      step = 1;
+-      if (arguments.length < 2) {
+-        stop = start;
+-        start = 0;
+-      }
++  d3.behavior.drag = function() {
++    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
++    function drag() {
++      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
+     }
+-    if ((stop - start) / step === Infinity) throw new Error("infinite range");
+-    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
+-    start *= k, stop *= k, step *= k;
+-    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
+-    return range;
+-  };
+-  function d3_range_integerScale(x) {
+-    var k = 1;
+-    while (x * k % 1) k *= 10;
+-    return k;
+-  }
+-  function d3_class(ctor, properties) {
+-    for (var key in properties) {
+-      Object.defineProperty(ctor.prototype, key, {
+-        value: properties[key],
+-        enumerable: false
+-      });
++    function dragstart(id, position, subject, move, end) {
++      return function() {
++        var that = this, target = d3.event.target.correspondingElement || d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
++        if (origin) {
++          dragOffset = origin.apply(that, arguments);
++          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
++        } else {
++          dragOffset = [ 0, 0 ];
++        }
++        dispatch({
++          type: "dragstart"
++        });
++        function moved() {
++          var position1 = position(parent, dragId), dx, dy;
++          if (!position1) return;
++          dx = position1[0] - position0[0];
++          dy = position1[1] - position0[1];
++          dragged |= dx | dy;
++          position0 = position1;
++          dispatch({
++            type: "drag",
++            x: position1[0] + dragOffset[0],
++            y: position1[1] + dragOffset[1],
++            dx: dx,
++            dy: dy
++          });
++        }
++        function ended() {
++          if (!position(parent, dragId)) return;
++          dragSubject.on(move + dragName, null).on(end + dragName, null);
++          dragRestore(dragged);
++          dispatch({
++            type: "dragend"
++          });
++        }
++      };
+     }
++    drag.origin = function(x) {
++      if (!arguments.length) return origin;
++      origin = x;
++      return drag;
++    };
++    return d3.rebind(drag, event, "on");
++  };
++  function d3_behavior_dragTouchId() {
++    return d3.event.changedTouches[0].identifier;
+   }
+-  d3.map = function(object, f) {
+-    var map = new d3_Map();
+-    if (object instanceof d3_Map) {
+-      object.forEach(function(key, value) {
+-        map.set(key, value);
+-      });
+-    } else if (Array.isArray(object)) {
+-      var i = -1, n = object.length, o;
+-      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
+-    } else {
+-      for (var key in object) map.set(key, object[key]);
+-    }
+-    return map;
++  d3.touches = function(container, touches) {
++    if (arguments.length < 2) touches = d3_eventSource().touches;
++    return touches ? d3_array(touches).map(function(touch) {
++      var point = d3_mousePoint(container, touch);
++      point.identifier = touch.identifier;
++      return point;
++    }) : [];
+   };
+-  function d3_Map() {
+-    this._ = Object.create(null);
++  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
++  function d3_sgn(x) {
++    return x > 0 ? 1 : x < 0 ? -1 : 0;
+   }
+-  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
+-  d3_class(d3_Map, {
+-    has: d3_map_has,
+-    get: function(key) {
+-      return this._[d3_map_escape(key)];
+-    },
+-    set: function(key, value) {
+-      return this._[d3_map_escape(key)] = value;
+-    },
+-    remove: d3_map_remove,
+-    keys: d3_map_keys,
+-    values: function() {
+-      var values = [];
+-      for (var key in this._) values.push(this._[key]);
+-      return values;
+-    },
+-    entries: function() {
+-      var entries = [];
+-      for (var key in this._) entries.push({
+-        key: d3_map_unescape(key),
+-        value: this._[key]
+-      });
+-      return entries;
+-    },
+-    size: d3_map_size,
+-    empty: d3_map_empty,
+-    forEach: function(f) {
+-      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
+-    }
+-  });
+-  function d3_map_escape(key) {
+-    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
++  function d3_cross2d(a, b, c) {
++    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
+   }
+-  function d3_map_unescape(key) {
+-    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
++  function d3_acos(x) {
++    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
+   }
+-  function d3_map_has(key) {
+-    return d3_map_escape(key) in this._;
++  function d3_asin(x) {
++    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
+   }
+-  function d3_map_remove(key) {
+-    return (key = d3_map_escape(key)) in this._ && delete this._[key];
++  function d3_sinh(x) {
++    return ((x = Math.exp(x)) - 1 / x) / 2;
+   }
+-  function d3_map_keys() {
+-    var keys = [];
+-    for (var key in this._) keys.push(d3_map_unescape(key));
+-    return keys;
++  function d3_cosh(x) {
++    return ((x = Math.exp(x)) + 1 / x) / 2;
+   }
+-  function d3_map_size() {
+-    var size = 0;
+-    for (var key in this._) ++size;
+-    return size;
++  function d3_tanh(x) {
++    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
+   }
+-  function d3_map_empty() {
+-    for (var key in this._) return false;
+-    return true;
++  function d3_haversin(x) {
++    return (x = Math.sin(x / 2)) * x;
+   }
+-  d3.nest = function() {
+-    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
+-    function map(mapType, array, depth) {
+-      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
+-      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
+-      while (++i < n) {
+-        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
+-          values.push(object);
++  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
++  d3.interpolateZoom = function(p0, p1) {
++    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2], dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, i, S;
++    if (d2 < ε2) {
++      S = Math.log(w1 / w0) / ρ;
++      i = function(t) {
++        return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * t * S) ];
++      };
++    } else {
++      var d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
++      S = (r1 - r0) / ρ;
++      i = function(t) {
++        var s = t * S, coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
++        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
++      };
++    }
++    i.duration = S * 1e3;
++    return i;
++  };
++  d3.behavior.zoom = function() {
++    var view = {
++      x: 0,
++      y: 0,
++      k: 1
++    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
++    if (!d3_behavior_zoomWheel) {
++      d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
++        return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
++      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
++        return d3.event.wheelDelta;
++      }, "mousewheel") : (d3_behavior_zoomDelta = function() {
++        return -d3.event.detail;
++      }, "MozMousePixelScroll");
++    }
++    function zoom(g) {
++      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
++    }
++    zoom.event = function(g) {
++      g.each(function() {
++        var dispatch = event.of(this, arguments), view1 = view;
++        if (d3_transitionInheritId) {
++          d3.select(this).transition().each("start.zoom", function() {
++            view = this.__chart__ || {
++              x: 0,
++              y: 0,
++              k: 1
++            };
++            zoomstarted(dispatch);
++          }).tween("zoom:zoom", function() {
++            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
++            return function(t) {
++              var l = i(t), k = dx / l[2];
++              this.__chart__ = view = {
++                x: cx - l[0] * k,
++                y: cy - l[1] * k,
++                k: k
++              };
++              zoomed(dispatch);
++            };
++          }).each("interrupt.zoom", function() {
++            zoomended(dispatch);
++          }).each("end.zoom", function() {
++            zoomended(dispatch);
++          });
+         } else {
+-          valuesByKey.set(keyValue, [ object ]);
++          this.__chart__ = view;
++          zoomstarted(dispatch);
++          zoomed(dispatch);
++          zoomended(dispatch);
+         }
+-      }
+-      if (mapType) {
+-        object = mapType();
+-        setter = function(keyValue, values) {
+-          object.set(keyValue, map(mapType, values, depth));
+-        };
+-      } else {
+-        object = {};
+-        setter = function(keyValue, values) {
+-          object[keyValue] = map(mapType, values, depth);
+-        };
+-      }
+-      valuesByKey.forEach(setter);
+-      return object;
+-    }
+-    function entries(map, depth) {
+-      if (depth >= keys.length) return map;
+-      var array = [], sortKey = sortKeys[depth++];
+-      map.forEach(function(key, keyMap) {
+-        array.push({
+-          key: key,
+-          values: entries(keyMap, depth)
+-        });
+       });
+-      return sortKey ? array.sort(function(a, b) {
+-        return sortKey(a.key, b.key);
+-      }) : array;
+-    }
+-    nest.map = function(array, mapType) {
+-      return map(mapType, array, 0);
+     };
+-    nest.entries = function(array) {
+-      return entries(map(d3.map, array, 0), 0);
++    zoom.translate = function(_) {
++      if (!arguments.length) return [ view.x, view.y ];
++      view = {
++        x: +_[0],
++        y: +_[1],
++        k: view.k
++      };
++      rescale();
++      return zoom;
+     };
+-    nest.key = function(d) {
+-      keys.push(d);
+-      return nest;
++    zoom.scale = function(_) {
++      if (!arguments.length) return view.k;
++      view = {
++        x: view.x,
++        y: view.y,
++        k: null
++      };
++      scaleTo(+_);
++      rescale();
++      return zoom;
+     };
+-    nest.sortKeys = function(order) {
+-      sortKeys[keys.length - 1] = order;
+-      return nest;
++    zoom.scaleExtent = function(_) {
++      if (!arguments.length) return scaleExtent;
++      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
++      return zoom;
+     };
+-    nest.sortValues = function(order) {
+-      sortValues = order;
+-      return nest;
++    zoom.center = function(_) {
++      if (!arguments.length) return center;
++      center = _ && [ +_[0], +_[1] ];
++      return zoom;
+     };
+-    nest.rollup = function(f) {
+-      rollup = f;
+-      return nest;
++    zoom.size = function(_) {
++      if (!arguments.length) return size;
++      size = _ && [ +_[0], +_[1] ];
++      return zoom;
+     };
+-    return nest;
+-  };
+-  d3.set = function(array) {
+-    var set = new d3_Set();
+-    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
+-    return set;
+-  };
+-  function d3_Set() {
+-    this._ = Object.create(null);
+-  }
+-  d3_class(d3_Set, {
+-    has: d3_map_has,
+-    add: function(key) {
+-      this._[d3_map_escape(key += "")] = true;
+-      return key;
+-    },
+-    remove: d3_map_remove,
+-    values: d3_map_keys,
+-    size: d3_map_size,
+-    empty: d3_map_empty,
+-    forEach: function(f) {
+-      for (var key in this._) f.call(this, d3_map_unescape(key));
+-    }
+-  });
+-  d3.behavior = {};
+-  function d3_identity(d) {
+-    return d;
+-  }
+-  d3.rebind = function(target, source) {
+-    var i = 1, n = arguments.length, method;
+-    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
+-    return target;
+-  };
+-  function d3_rebind(target, source, method) {
+-    return function() {
+-      var value = method.apply(source, arguments);
+-      return value === source ? target : value;
++    zoom.duration = function(_) {
++      if (!arguments.length) return duration;
++      duration = +_;
++      return zoom;
+     };
+-  }
+-  function d3_vendorSymbol(object, name) {
+-    if (name in object) return name;
+-    name = name.charAt(0).toUpperCase() + name.slice(1);
+-    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
+-      var prefixName = d3_vendorPrefixes[i] + name;
+-      if (prefixName in object) return prefixName;
++    zoom.x = function(z) {
++      if (!arguments.length) return x1;
++      x1 = z;
++      x0 = z.copy();
++      view = {
++        x: 0,
++        y: 0,
++        k: 1
++      };
++      return zoom;
++    };
++    zoom.y = function(z) {
++      if (!arguments.length) return y1;
++      y1 = z;
++      y0 = z.copy();
++      view = {
++        x: 0,
++        y: 0,
++        k: 1
++      };
++      return zoom;
++    };
++    function location(p) {
++      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
+     }
+-  }
+-  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
+-  function d3_noop() {}
+-  d3.dispatch = function() {
+-    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
+-    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
+-    return dispatch;
+-  };
+-  function d3_dispatch() {}
+-  d3_dispatch.prototype.on = function(type, listener) {
+-    var i = type.indexOf("."), name = "";
+-    if (i >= 0) {
+-      name = type.slice(i + 1);
+-      type = type.slice(0, i);
++    function point(l) {
++      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
+     }
+-    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
+-    if (arguments.length === 2) {
+-      if (listener == null) for (type in this) {
+-        if (this.hasOwnProperty(type)) this[type].on(name, null);
+-      }
+-      return this;
++    function scaleTo(s) {
++      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
+     }
+-  };
+-  function d3_dispatch_event(dispatch) {
+-    var listeners = [], listenerByName = new d3_Map();
+-    function event() {
+-      var z = listeners, i = -1, n = z.length, l;
+-      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
+-      return dispatch;
++    function translateTo(p, l) {
++      l = point(l);
++      view.x += p[0] - l[0];
++      view.y += p[1] - l[1];
+     }
+-    event.on = function(name, listener) {
+-      var l = listenerByName.get(name), i;
+-      if (arguments.length < 2) return l && l.on;
+-      if (l) {
+-        l.on = null;
+-        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
+-        listenerByName.remove(name);
+-      }
+-      if (listener) listeners.push(listenerByName.set(name, {
+-        on: listener
+-      }));
+-      return dispatch;
+-    };
+-    return event;
+-  }
+-  d3.event = null;
+-  function d3_eventPreventDefault() {
+-    d3.event.preventDefault();
+-  }
+-  function d3_eventSource() {
+-    var e = d3.event, s;
+-    while (s = e.sourceEvent) e = s;
+-    return e;
+-  }
+-  function d3_eventDispatch(target) {
+-    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
+-    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
+-    dispatch.of = function(thiz, argumentz) {
+-      return function(e1) {
+-        try {
+-          var e0 = e1.sourceEvent = d3.event;
+-          e1.target = target;
+-          d3.event = e1;
+-          dispatch[e1.type].apply(thiz, argumentz);
+-        } finally {
+-          d3.event = e0;
+-        }
++    function zoomTo(that, p, l, k) {
++      that.__chart__ = {
++        x: view.x,
++        y: view.y,
++        k: view.k
+       };
+-    };
+-    return dispatch;
+-  }
+-  d3.requote = function(s) {
+-    return s.replace(d3_requote_re, "\\$&");
+-  };
+-  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
+-  var d3_subclass = {}.__proto__ ? function(object, prototype) {
+-    object.__proto__ = prototype;
+-  } : function(object, prototype) {
+-    for (var property in prototype) object[property] = prototype[property];
+-  };
+-  function d3_selection(groups) {
+-    d3_subclass(groups, d3_selectionPrototype);
+-    return groups;
+-  }
+-  var d3_select = function(s, n) {
+-    return n.querySelector(s);
+-  }, d3_selectAll = function(s, n) {
+-    return n.querySelectorAll(s);
+-  }, d3_selectMatches = function(n, s) {
+-    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
+-    d3_selectMatches = function(n, s) {
+-      return d3_selectMatcher.call(n, s);
+-    };
+-    return d3_selectMatches(n, s);
+-  };
+-  if (typeof Sizzle === "function") {
+-    d3_select = function(s, n) {
+-      return Sizzle(s, n)[0] || null;
+-    };
+-    d3_selectAll = Sizzle;
+-    d3_selectMatches = Sizzle.matchesSelector;
+-  }
+-  d3.selection = function() {
+-    return d3.select(d3_document.documentElement);
+-  };
+-  var d3_selectionPrototype = d3.selection.prototype = [];
+-  d3_selectionPrototype.select = function(selector) {
+-    var subgroups = [], subgroup, subnode, group, node;
+-    selector = d3_selection_selector(selector);
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      subgroups.push(subgroup = []);
+-      subgroup.parentNode = (group = this[j]).parentNode;
+-      for (var i = -1, n = group.length; ++i < n; ) {
+-        if (node = group[i]) {
+-          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
+-          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
+-        } else {
+-          subgroup.push(null);
+-        }
+-      }
+-    }
+-    return d3_selection(subgroups);
+-  };
+-  function d3_selection_selector(selector) {
+-    return typeof selector === "function" ? selector : function() {
+-      return d3_select(selector, this);
+-    };
+-  }
+-  d3_selectionPrototype.selectAll = function(selector) {
+-    var subgroups = [], subgroup, node;
+-    selector = d3_selection_selectorAll(selector);
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
+-        if (node = group[i]) {
+-          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
+-          subgroup.parentNode = node;
+-        }
+-      }
+-    }
+-    return d3_selection(subgroups);
+-  };
+-  function d3_selection_selectorAll(selector) {
+-    return typeof selector === "function" ? selector : function() {
+-      return d3_selectAll(selector, this);
+-    };
+-  }
+-  var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
+-  var d3_nsPrefix = {
+-    svg: "http://www.w3.org/2000/svg",
+-    xhtml: d3_nsXhtml,
+-    xlink: "http://www.w3.org/1999/xlink",
+-    xml: "http://www.w3.org/XML/1998/namespace",
+-    xmlns: "http://www.w3.org/2000/xmlns/"
+-  };
+-  d3.ns = {
+-    prefix: d3_nsPrefix,
+-    qualify: function(name) {
+-      var i = name.indexOf(":"), prefix = name;
+-      if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
+-      return d3_nsPrefix.hasOwnProperty(prefix) ? {
+-        space: d3_nsPrefix[prefix],
+-        local: name
+-      } : name;
+-    }
+-  };
+-  d3_selectionPrototype.attr = function(name, value) {
+-    if (arguments.length < 2) {
+-      if (typeof name === "string") {
+-        var node = this.node();
+-        name = d3.ns.qualify(name);
+-        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
+-      }
+-      for (value in name) this.each(d3_selection_attr(value, name[value]));
+-      return this;
+-    }
+-    return this.each(d3_selection_attr(name, value));
+-  };
+-  function d3_selection_attr(name, value) {
+-    name = d3.ns.qualify(name);
+-    function attrNull() {
+-      this.removeAttribute(name);
+-    }
+-    function attrNullNS() {
+-      this.removeAttributeNS(name.space, name.local);
++      scaleTo(Math.pow(2, k));
++      translateTo(center0 = p, l);
++      that = d3.select(that);
++      if (duration > 0) that = that.transition().duration(duration);
++      that.call(zoom.event);
+     }
+-    function attrConstant() {
+-      this.setAttribute(name, value);
++    function rescale() {
++      if (x1) x1.domain(x0.range().map(function(x) {
++        return (x - view.x) / view.k;
++      }).map(x0.invert));
++      if (y1) y1.domain(y0.range().map(function(y) {
++        return (y - view.y) / view.k;
++      }).map(y0.invert));
+     }
+-    function attrConstantNS() {
+-      this.setAttributeNS(name.space, name.local, value);
++    function zoomstarted(dispatch) {
++      if (!zooming++) dispatch({
++        type: "zoomstart"
++      });
+     }
+-    function attrFunction() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
++    function zoomed(dispatch) {
++      rescale();
++      dispatch({
++        type: "zoom",
++        scale: view.k,
++        translate: [ view.x, view.y ]
++      });
+     }
+-    function attrFunctionNS() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
++    function zoomended(dispatch) {
++      if (!--zooming) dispatch({
++        type: "zoomend"
++      }), center0 = null;
+     }
+-    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
+-  }
+-  function d3_collapse(s) {
+-    return s.trim().replace(/\s+/g, " ");
+-  }
+-  d3_selectionPrototype.classed = function(name, value) {
+-    if (arguments.length < 2) {
+-      if (typeof name === "string") {
+-        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
+-        if (value = node.classList) {
+-          while (++i < n) if (!value.contains(name[i])) return false;
+-        } else {
+-          value = node.getAttribute("class");
+-          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
+-        }
+-        return true;
++    function mousedowned() {
++      var that = this, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
++      d3_selection_interrupt.call(that);
++      zoomstarted(dispatch);
++      function moved() {
++        dragged = 1;
++        translateTo(d3.mouse(that), location0);
++        zoomed(dispatch);
++      }
++      function ended() {
++        subject.on(mousemove, null).on(mouseup, null);
++        dragRestore(dragged);
++        zoomended(dispatch);
+       }
+-      for (value in name) this.each(d3_selection_classed(value, name[value]));
+-      return this;
+-    }
+-    return this.each(d3_selection_classed(name, value));
+-  };
+-  function d3_selection_classedRe(name) {
+-    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
+-  }
+-  function d3_selection_classes(name) {
+-    return (name + "").trim().split(/^|\s+/);
+-  }
+-  function d3_selection_classed(name, value) {
+-    name = d3_selection_classes(name).map(d3_selection_classedName);
+-    var n = name.length;
+-    function classedConstant() {
+-      var i = -1;
+-      while (++i < n) name[i](this, value);
+-    }
+-    function classedFunction() {
+-      var i = -1, x = value.apply(this, arguments);
+-      while (++i < n) name[i](this, x);
+     }
+-    return typeof value === "function" ? classedFunction : classedConstant;
+-  }
+-  function d3_selection_classedName(name) {
+-    var re = d3_selection_classedRe(name);
+-    return function(node, value) {
+-      if (c = node.classList) return value ? c.add(name) : c.remove(name);
+-      var c = node.getAttribute("class") || "";
+-      if (value) {
+-        re.lastIndex = 0;
+-        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
+-      } else {
+-        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
++    function touchstarted() {
++      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
++      started();
++      zoomstarted(dispatch);
++      subject.on(mousedown, null).on(touchstart, started);
++      function relocate() {
++        var touches = d3.touches(that);
++        scale0 = view.k;
++        touches.forEach(function(t) {
++          if (t.identifier in locations0) locations0[t.identifier] = location(t);
++        });
++        return touches;
+       }
+-    };
+-  }
+-  d3_selectionPrototype.style = function(name, value, priority) {
+-    var n = arguments.length;
+-    if (n < 3) {
+-      if (typeof name !== "string") {
+-        if (n < 2) value = "";
+-        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
+-        return this;
++      function started() {
++        var target = d3.event.target;
++        d3.select(target).on(touchmove, moved).on(touchend, ended);
++        targets.push(target);
++        var changed = d3.event.changedTouches;
++        for (var i = 0, n = changed.length; i < n; ++i) {
++          locations0[changed[i].identifier] = null;
++        }
++        var touches = relocate(), now = Date.now();
++        if (touches.length === 1) {
++          if (now - touchtime < 500) {
++            var p = touches[0];
++            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
++            d3_eventPreventDefault();
++          }
++          touchtime = now;
++        } else if (touches.length > 1) {
++          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
++          distance0 = dx * dx + dy * dy;
++        }
+       }
+-      if (n < 2) {
+-        var node = this.node();
+-        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
++      function moved() {
++        var touches = d3.touches(that), p0, l0, p1, l1;
++        d3_selection_interrupt.call(that);
++        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
++          p1 = touches[i];
++          if (l1 = locations0[p1.identifier]) {
++            if (l0) break;
++            p0 = p1, l0 = l1;
++          }
++        }
++        if (l1) {
++          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
++          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
++          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
++          scaleTo(scale1 * scale0);
++        }
++        touchtime = null;
++        translateTo(p0, l0);
++        zoomed(dispatch);
++      }
++      function ended() {
++        if (d3.event.touches.length) {
++          var changed = d3.event.changedTouches;
++          for (var i = 0, n = changed.length; i < n; ++i) {
++            delete locations0[changed[i].identifier];
++          }
++          for (var identifier in locations0) {
++            return void relocate();
++          }
++        }
++        d3.selectAll(targets).on(zoomName, null);
++        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
++        dragRestore();
++        zoomended(dispatch);
+       }
+-      priority = "";
+-    }
+-    return this.each(d3_selection_style(name, value, priority));
+-  };
+-  function d3_selection_style(name, value, priority) {
+-    function styleNull() {
+-      this.style.removeProperty(name);
+     }
+-    function styleConstant() {
+-      this.style.setProperty(name, value, priority);
++    function mousewheeled() {
++      var dispatch = event.of(this, arguments);
++      if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this), 
++      translate0 = location(center0 = center || d3.mouse(this)), zoomstarted(dispatch);
++      mousewheelTimer = setTimeout(function() {
++        mousewheelTimer = null;
++        zoomended(dispatch);
++      }, 50);
++      d3_eventPreventDefault();
++      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
++      translateTo(center0, translate0);
++      zoomed(dispatch);
+     }
+-    function styleFunction() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
++    function dblclicked() {
++      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
++      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
+     }
+-    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
++    return d3.rebind(zoom, event, "on");
++  };
++  var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
++  d3.color = d3_color;
++  function d3_color() {}
++  d3_color.prototype.toString = function() {
++    return this.rgb() + "";
++  };
++  d3.hsl = d3_hsl;
++  function d3_hsl(h, s, l) {
++    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
+   }
+-  d3_selectionPrototype.property = function(name, value) {
+-    if (arguments.length < 2) {
+-      if (typeof name === "string") return this.node()[name];
+-      for (value in name) this.each(d3_selection_property(value, name[value]));
+-      return this;
+-    }
+-    return this.each(d3_selection_property(name, value));
++  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
++  d3_hslPrototype.brighter = function(k) {
++    k = Math.pow(.7, arguments.length ? k : 1);
++    return new d3_hsl(this.h, this.s, this.l / k);
+   };
+-  function d3_selection_property(name, value) {
+-    function propertyNull() {
+-      delete this[name];
+-    }
+-    function propertyConstant() {
+-      this[name] = value;
++  d3_hslPrototype.darker = function(k) {
++    k = Math.pow(.7, arguments.length ? k : 1);
++    return new d3_hsl(this.h, this.s, k * this.l);
++  };
++  d3_hslPrototype.rgb = function() {
++    return d3_hsl_rgb(this.h, this.s, this.l);
++  };
++  function d3_hsl_rgb(h, s, l) {
++    var m1, m2;
++    h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
++    s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
++    l = l < 0 ? 0 : l > 1 ? 1 : l;
++    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
++    m1 = 2 * l - m2;
++    function v(h) {
++      if (h > 360) h -= 360; else if (h < 0) h += 360;
++      if (h < 60) return m1 + (m2 - m1) * h / 60;
++      if (h < 180) return m2;
++      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
++      return m1;
+     }
+-    function propertyFunction() {
+-      var x = value.apply(this, arguments);
+-      if (x == null) delete this[name]; else this[name] = x;
++    function vv(h) {
++      return Math.round(v(h) * 255);
+     }
+-    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
++    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
+   }
+-  d3_selectionPrototype.text = function(value) {
+-    return arguments.length ? this.each(typeof value === "function" ? function() {
+-      var v = value.apply(this, arguments);
+-      this.textContent = v == null ? "" : v;
+-    } : value == null ? function() {
+-      this.textContent = "";
+-    } : function() {
+-      this.textContent = value;
+-    }) : this.node().textContent;
++  d3.hcl = d3_hcl;
++  function d3_hcl(h, c, l) {
++    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
++  }
++  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
++  d3_hclPrototype.brighter = function(k) {
++    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
+   };
+-  d3_selectionPrototype.html = function(value) {
+-    return arguments.length ? this.each(typeof value === "function" ? function() {
+-      var v = value.apply(this, arguments);
+-      this.innerHTML = v == null ? "" : v;
+-    } : value == null ? function() {
+-      this.innerHTML = "";
+-    } : function() {
+-      this.innerHTML = value;
+-    }) : this.node().innerHTML;
++  d3_hclPrototype.darker = function(k) {
++    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
+   };
+-  d3_selectionPrototype.append = function(name) {
+-    name = d3_selection_creator(name);
+-    return this.select(function() {
+-      return this.appendChild(name.apply(this, arguments));
+-    });
++  d3_hclPrototype.rgb = function() {
++    return d3_hcl_lab(this.h, this.c, this.l).rgb();
+   };
+-  function d3_selection_creator(name) {
+-    function create() {
+-      var document = this.ownerDocument, namespace = this.namespaceURI;
+-      return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
+-    }
+-    function createNS() {
+-      return this.ownerDocument.createElementNS(name.space, name.local);
+-    }
+-    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
++  function d3_hcl_lab(h, c, l) {
++    if (isNaN(h)) h = 0;
++    if (isNaN(c)) c = 0;
++    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
+   }
+-  d3_selectionPrototype.insert = function(name, before) {
+-    name = d3_selection_creator(name);
+-    before = d3_selection_selector(before);
+-    return this.select(function() {
+-      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
+-    });
++  d3.lab = d3_lab;
++  function d3_lab(l, a, b) {
++    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
++  }
++  var d3_lab_K = 18;
++  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
++  var d3_labPrototype = d3_lab.prototype = new d3_color();
++  d3_labPrototype.brighter = function(k) {
++    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
+   };
+-  d3_selectionPrototype.remove = function() {
+-    return this.each(d3_selectionRemove);
++  d3_labPrototype.darker = function(k) {
++    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
+   };
+-  function d3_selectionRemove() {
+-    var parent = this.parentNode;
+-    if (parent) parent.removeChild(this);
++  d3_labPrototype.rgb = function() {
++    return d3_lab_rgb(this.l, this.a, this.b);
++  };
++  function d3_lab_rgb(l, a, b) {
++    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
++    x = d3_lab_xyz(x) * d3_lab_X;
++    y = d3_lab_xyz(y) * d3_lab_Y;
++    z = d3_lab_xyz(z) * d3_lab_Z;
++    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
+   }
+-  d3_selectionPrototype.data = function(value, key) {
+-    var i = -1, n = this.length, group, node;
+-    if (!arguments.length) {
+-      value = new Array(n = (group = this[0]).length);
+-      while (++i < n) {
+-        if (node = group[i]) {
+-          value[i] = node.__data__;
+-        }
+-      }
+-      return value;
+-    }
+-    function bind(group, groupData) {
+-      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
+-      if (key) {
+-        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
+-        for (i = -1; ++i < n; ) {
+-          if (node = group[i]) {
+-            if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
+-              exitNodes[i] = node;
+-            } else {
+-              nodeByKeyValue.set(keyValue, node);
+-            }
+-            keyValues[i] = keyValue;
+-          }
+-        }
+-        for (i = -1; ++i < m; ) {
+-          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
+-            enterNodes[i] = d3_selection_dataNode(nodeData);
+-          } else if (node !== true) {
+-            updateNodes[i] = node;
+-            node.__data__ = nodeData;
+-          }
+-          nodeByKeyValue.set(keyValue, true);
+-        }
+-        for (i = -1; ++i < n; ) {
+-          if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
+-            exitNodes[i] = group[i];
+-          }
+-        }
+-      } else {
+-        for (i = -1; ++i < n0; ) {
+-          node = group[i];
+-          nodeData = groupData[i];
+-          if (node) {
+-            node.__data__ = nodeData;
+-            updateNodes[i] = node;
+-          } else {
+-            enterNodes[i] = d3_selection_dataNode(nodeData);
+-          }
+-        }
+-        for (;i < m; ++i) {
+-          enterNodes[i] = d3_selection_dataNode(groupData[i]);
+-        }
+-        for (;i < n; ++i) {
+-          exitNodes[i] = group[i];
+-        }
+-      }
+-      enterNodes.update = updateNodes;
+-      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
+-      enter.push(enterNodes);
+-      update.push(updateNodes);
+-      exit.push(exitNodes);
+-    }
+-    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
+-    if (typeof value === "function") {
+-      while (++i < n) {
+-        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
+-      }
+-    } else {
+-      while (++i < n) {
+-        bind(group = this[i], value);
+-      }
+-    }
+-    update.enter = function() {
+-      return enter;
+-    };
+-    update.exit = function() {
+-      return exit;
+-    };
+-    return update;
+-  };
+-  function d3_selection_dataNode(data) {
+-    return {
+-      __data__: data
+-    };
++  function d3_lab_hcl(l, a, b) {
++    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
+   }
+-  d3_selectionPrototype.datum = function(value) {
+-    return arguments.length ? this.property("__data__", value) : this.property("__data__");
+-  };
+-  d3_selectionPrototype.filter = function(filter) {
+-    var subgroups = [], subgroup, group, node;
+-    if (typeof filter !== "function") filter = d3_selection_filter(filter);
+-    for (var j = 0, m = this.length; j < m; j++) {
+-      subgroups.push(subgroup = []);
+-      subgroup.parentNode = (group = this[j]).parentNode;
+-      for (var i = 0, n = group.length; i < n; i++) {
+-        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
+-          subgroup.push(node);
+-        }
+-      }
+-    }
+-    return d3_selection(subgroups);
+-  };
+-  function d3_selection_filter(selector) {
+-    return function() {
+-      return d3_selectMatches(this, selector);
+-    };
++  function d3_lab_xyz(x) {
++    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
+   }
+-  d3_selectionPrototype.order = function() {
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
+-        if (node = group[i]) {
+-          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
+-          next = node;
+-        }
+-      }
+-    }
+-    return this;
+-  };
+-  d3_selectionPrototype.sort = function(comparator) {
+-    comparator = d3_selection_sortComparator.apply(this, arguments);
+-    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
+-    return this.order();
+-  };
+-  function d3_selection_sortComparator(comparator) {
+-    if (!arguments.length) comparator = d3_ascending;
+-    return function(a, b) {
+-      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
+-    };
++  function d3_xyz_lab(x) {
++    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
+   }
+-  d3_selectionPrototype.each = function(callback) {
+-    return d3_selection_each(this, function(node, i, j) {
+-      callback.call(node, node.__data__, i, j);
+-    });
+-  };
+-  function d3_selection_each(groups, callback) {
+-    for (var j = 0, m = groups.length; j < m; j++) {
+-      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
+-        if (node = group[i]) callback(node, i, j);
+-      }
+-    }
+-    return groups;
++  function d3_xyz_rgb(r) {
++    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
+   }
+-  d3_selectionPrototype.call = function(callback) {
+-    var args = d3_array(arguments);
+-    callback.apply(args[0] = this, args);
+-    return this;
++  d3.rgb = d3_rgb;
++  function d3_rgb(r, g, b) {
++    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
++  }
++  function d3_rgbNumber(value) {
++    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
++  }
++  function d3_rgbString(value) {
++    return d3_rgbNumber(value) + "";
++  }
++  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
++  d3_rgbPrototype.brighter = function(k) {
++    k = Math.pow(.7, arguments.length ? k : 1);
++    var r = this.r, g = this.g, b = this.b, i = 30;
++    if (!r && !g && !b) return new d3_rgb(i, i, i);
++    if (r && r < i) r = i;
++    if (g && g < i) g = i;
++    if (b && b < i) b = i;
++    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
+   };
+-  d3_selectionPrototype.empty = function() {
+-    return !this.node();
++  d3_rgbPrototype.darker = function(k) {
++    k = Math.pow(.7, arguments.length ? k : 1);
++    return new d3_rgb(k * this.r, k * this.g, k * this.b);
+   };
+-  d3_selectionPrototype.node = function() {
+-    for (var j = 0, m = this.length; j < m; j++) {
+-      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
+-        var node = group[i];
+-        if (node) return node;
+-      }
+-    }
+-    return null;
++  d3_rgbPrototype.hsl = function() {
++    return d3_rgb_hsl(this.r, this.g, this.b);
+   };
+-  d3_selectionPrototype.size = function() {
+-    var n = 0;
+-    d3_selection_each(this, function() {
+-      ++n;
+-    });
+-    return n;
++  d3_rgbPrototype.toString = function() {
++    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
+   };
+-  function d3_selection_enter(selection) {
+-    d3_subclass(selection, d3_selection_enterPrototype);
+-    return selection;
++  function d3_rgb_hex(v) {
++    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
+   }
+-  var d3_selection_enterPrototype = [];
+-  d3.selection.enter = d3_selection_enter;
+-  d3.selection.enter.prototype = d3_selection_enterPrototype;
+-  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
+-  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
+-  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
+-  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
+-  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
+-  d3_selection_enterPrototype.select = function(selector) {
+-    var subgroups = [], subgroup, subnode, upgroup, group, node;
+-    for (var j = -1, m = this.length; ++j < m; ) {
+-      upgroup = (group = this[j]).update;
+-      subgroups.push(subgroup = []);
+-      subgroup.parentNode = group.parentNode;
+-      for (var i = -1, n = group.length; ++i < n; ) {
+-        if (node = group[i]) {
+-          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
+-          subnode.__data__ = node.__data__;
+-        } else {
+-          subgroup.push(null);
++  function d3_rgb_parse(format, rgb, hsl) {
++    var r = 0, g = 0, b = 0, m1, m2, color;
++    m1 = /([a-z]+)\((.*)\)/.exec(format = format.toLowerCase());
++    if (m1) {
++      m2 = m1[2].split(",");
++      switch (m1[1]) {
++       case "hsl":
++        {
++          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
+         }
+-      }
+-    }
+-    return d3_selection(subgroups);
+-  };
+-  d3_selection_enterPrototype.insert = function(name, before) {
+-    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
+-    return d3_selectionPrototype.insert.call(this, name, before);
+-  };
+-  function d3_selection_enterInsertBefore(enter) {
+-    var i0, j0;
+-    return function(d, i, j) {
+-      var group = enter[j].update, n = group.length, node;
+-      if (j != j0) j0 = j, i0 = 0;
+-      if (i >= i0) i0 = i + 1;
+-      while (!(node = group[i0]) && ++i0 < n) ;
+-      return node;
+-    };
+-  }
+-  d3.select = function(node) {
+-    var group;
+-    if (typeof node === "string") {
+-      group = [ d3_select(node, d3_document) ];
+-      group.parentNode = d3_document.documentElement;
+-    } else {
+-      group = [ node ];
+-      group.parentNode = d3_documentElement(node);
+-    }
+-    return d3_selection([ group ]);
+-  };
+-  d3.selectAll = function(nodes) {
+-    var group;
+-    if (typeof nodes === "string") {
+-      group = d3_array(d3_selectAll(nodes, d3_document));
+-      group.parentNode = d3_document.documentElement;
+-    } else {
+-      group = d3_array(nodes);
+-      group.parentNode = null;
+-    }
+-    return d3_selection([ group ]);
+-  };
+-  d3_selectionPrototype.on = function(type, listener, capture) {
+-    var n = arguments.length;
+-    if (n < 3) {
+-      if (typeof type !== "string") {
+-        if (n < 2) listener = false;
+-        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
+-        return this;
+-      }
+-      if (n < 2) return (n = this.node()["__on" + type]) && n._;
+-      capture = false;
+-    }
+-    return this.each(d3_selection_on(type, listener, capture));
+-  };
+-  function d3_selection_on(type, listener, capture) {
+-    var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
+-    if (i > 0) type = type.slice(0, i);
+-    var filter = d3_selection_onFilters.get(type);
+-    if (filter) type = filter, wrap = d3_selection_onFilter;
+-    function onRemove() {
+-      var l = this[name];
+-      if (l) {
+-        this.removeEventListener(type, l, l.$);
+-        delete this[name];
+-      }
+-    }
+-    function onAdd() {
+-      var l = wrap(listener, d3_array(arguments));
+-      onRemove.call(this);
+-      this.addEventListener(type, this[name] = l, l.$ = capture);
+-      l._ = listener;
+-    }
+-    function removeAll() {
+-      var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
+-      for (var name in this) {
+-        if (match = name.match(re)) {
+-          var l = this[name];
+-          this.removeEventListener(match[1], l, l.$);
+-          delete this[name];
++
++       case "rgb":
++        {
++          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
+         }
+       }
+     }
+-    return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
+-  }
+-  var d3_selection_onFilters = d3.map({
+-    mouseenter: "mouseover",
+-    mouseleave: "mouseout"
+-  });
+-  if (d3_document) {
+-    d3_selection_onFilters.forEach(function(k) {
+-      if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
+-    });
+-  }
+-  function d3_selection_onListener(listener, argumentz) {
+-    return function(e) {
+-      var o = d3.event;
+-      d3.event = e;
+-      argumentz[0] = this.__data__;
+-      try {
+-        listener.apply(this, argumentz);
+-      } finally {
+-        d3.event = o;
+-      }
+-    };
+-  }
+-  function d3_selection_onFilter(listener, argumentz) {
+-    var l = d3_selection_onListener(listener, argumentz);
+-    return function(e) {
+-      var target = this, related = e.relatedTarget;
+-      if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
+-        l.call(target, e);
+-      }
+-    };
+-  }
+-  var d3_event_dragSelect, d3_event_dragId = 0;
+-  function d3_event_dragSuppress(node) {
+-    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
+-    if (d3_event_dragSelect == null) {
+-      d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
+-    }
+-    if (d3_event_dragSelect) {
+-      var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
+-      style[d3_event_dragSelect] = "none";
++    if (color = d3_rgb_names.get(format)) {
++      return rgb(color.r, color.g, color.b);
+     }
+-    return function(suppressClick) {
+-      w.on(name, null);
+-      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
+-      if (suppressClick) {
+-        var off = function() {
+-          w.on(click, null);
+-        };
+-        w.on(click, function() {
+-          d3_eventPreventDefault();
+-          off();
+-        }, true);
+-        setTimeout(off, 0);
+-      }
+-    };
+-  }
+-  d3.mouse = function(container) {
+-    return d3_mousePoint(container, d3_eventSource());
+-  };
+-  var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
+-  function d3_mousePoint(container, e) {
+-    if (e.changedTouches) e = e.changedTouches[0];
+-    var svg = container.ownerSVGElement || container;
+-    if (svg.createSVGPoint) {
+-      var point = svg.createSVGPoint();
+-      if (d3_mouse_bug44083 < 0) {
+-        var window = d3_window(container);
+-        if (window.scrollX || window.scrollY) {
+-          svg = d3.select("body").append("svg").style({
+-            position: "absolute",
+-            top: 0,
+-            left: 0,
+-            margin: 0,
+-            padding: 0,
+-            border: "none"
+-          }, "important");
+-          var ctm = svg[0][0].getScreenCTM();
+-          d3_mouse_bug44083 = !(ctm.f || ctm.e);
+-          svg.remove();
+-        }
++    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
++      if (format.length === 4) {
++        r = (color & 3840) >> 4;
++        r = r >> 4 | r;
++        g = color & 240;
++        g = g >> 4 | g;
++        b = color & 15;
++        b = b << 4 | b;
++      } else if (format.length === 7) {
++        r = (color & 16711680) >> 16;
++        g = (color & 65280) >> 8;
++        b = color & 255;
+       }
+-      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX, 
+-      point.y = e.clientY;
+-      point = point.matrixTransform(container.getScreenCTM().inverse());
+-      return [ point.x, point.y ];
+     }
+-    var rect = container.getBoundingClientRect();
+-    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
++    return rgb(r, g, b);
+   }
+-  d3.touch = function(container, touches, identifier) {
+-    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
+-    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
+-      if ((touch = touches[i]).identifier === identifier) {
+-        return d3_mousePoint(container, touch);
+-      }
+-    }
+-  };
+-  d3.behavior.drag = function() {
+-    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
+-    function drag() {
+-      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
+-    }
+-    function dragstart(id, position, subject, move, end) {
+-      return function() {
+-        var that = this, target = d3.event.target.correspondingElement || d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
+-        if (origin) {
+-          dragOffset = origin.apply(that, arguments);
+-          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
+-        } else {
+-          dragOffset = [ 0, 0 ];
+-        }
+-        dispatch({
+-          type: "dragstart"
+-        });
+-        function moved() {
+-          var position1 = position(parent, dragId), dx, dy;
+-          if (!position1) return;
+-          dx = position1[0] - position0[0];
+-          dy = position1[1] - position0[1];
+-          dragged |= dx | dy;
+-          position0 = position1;
+-          dispatch({
+-            type: "drag",
+-            x: position1[0] + dragOffset[0],
+-            y: position1[1] + dragOffset[1],
+-            dx: dx,
+-            dy: dy
+-          });
+-        }
+-        function ended() {
+-          if (!position(parent, dragId)) return;
+-          dragSubject.on(move + dragName, null).on(end + dragName, null);
+-          dragRestore(dragged);
+-          dispatch({
+-            type: "dragend"
+-          });
+-        }
+-      };
++  function d3_rgb_hsl(r, g, b) {
++    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
++    if (d) {
++      s = l < .5 ? d / (max + min) : d / (2 - max - min);
++      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
++      h *= 60;
++    } else {
++      h = NaN;
++      s = l > 0 && l < 1 ? 0 : h;
+     }
+-    drag.origin = function(x) {
+-      if (!arguments.length) return origin;
+-      origin = x;
+-      return drag;
+-    };
+-    return d3.rebind(drag, event, "on");
+-  };
+-  function d3_behavior_dragTouchId() {
+-    return d3.event.changedTouches[0].identifier;
+-  }
+-  d3.touches = function(container, touches) {
+-    if (arguments.length < 2) touches = d3_eventSource().touches;
+-    return touches ? d3_array(touches).map(function(touch) {
+-      var point = d3_mousePoint(container, touch);
+-      point.identifier = touch.identifier;
+-      return point;
+-    }) : [];
+-  };
+-  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
+-  function d3_sgn(x) {
+-    return x > 0 ? 1 : x < 0 ? -1 : 0;
+-  }
+-  function d3_cross2d(a, b, c) {
+-    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
+-  }
+-  function d3_acos(x) {
+-    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
+-  }
+-  function d3_asin(x) {
+-    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
+-  }
+-  function d3_sinh(x) {
+-    return ((x = Math.exp(x)) - 1 / x) / 2;
++    return new d3_hsl(h, s, l);
+   }
+-  function d3_cosh(x) {
+-    return ((x = Math.exp(x)) + 1 / x) / 2;
++  function d3_rgb_lab(r, g, b) {
++    r = d3_rgb_xyz(r);
++    g = d3_rgb_xyz(g);
++    b = d3_rgb_xyz(b);
++    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
++    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
+   }
+-  function d3_tanh(x) {
+-    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
++  function d3_rgb_xyz(r) {
++    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
+   }
+-  function d3_haversin(x) {
+-    return (x = Math.sin(x / 2)) * x;
+-  }
+-  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
+-  d3.interpolateZoom = function(p0, p1) {
+-    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2], dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, i, S;
+-    if (d2 < ε2) {
+-      S = Math.log(w1 / w0) / ρ;
+-      i = function(t) {
+-        return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * t * S) ];
+-      };
+-    } else {
+-      var d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
+-      S = (r1 - r0) / ρ;
+-      i = function(t) {
+-        var s = t * S, coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
+-        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
+-      };
+-    }
+-    i.duration = S * 1e3;
+-    return i;
+-  };
+-  d3.behavior.zoom = function() {
+-    var view = {
+-      x: 0,
+-      y: 0,
+-      k: 1
+-    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
+-    if (!d3_behavior_zoomWheel) {
+-      d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
+-        return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
+-      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
+-        return d3.event.wheelDelta;
+-      }, "mousewheel") : (d3_behavior_zoomDelta = function() {
+-        return -d3.event.detail;
+-      }, "MozMousePixelScroll");
+-    }
+-    function zoom(g) {
+-      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
+-    }
+-    zoom.event = function(g) {
+-      g.each(function() {
+-        var dispatch = event.of(this, arguments), view1 = view;
+-        if (d3_transitionInheritId) {
+-          d3.select(this).transition().each("start.zoom", function() {
+-            view = this.__chart__ || {
+-              x: 0,
+-              y: 0,
+-              k: 1
+-            };
+-            zoomstarted(dispatch);
+-          }).tween("zoom:zoom", function() {
+-            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
+-            return function(t) {
+-              var l = i(t), k = dx / l[2];
+-              this.__chart__ = view = {
+-                x: cx - l[0] * k,
+-                y: cy - l[1] * k,
+-                k: k
+-              };
+-              zoomed(dispatch);
+-            };
+-          }).each("interrupt.zoom", function() {
+-            zoomended(dispatch);
+-          }).each("end.zoom", function() {
+-            zoomended(dispatch);
+-          });
+-        } else {
+-          this.__chart__ = view;
+-          zoomstarted(dispatch);
+-          zoomed(dispatch);
+-          zoomended(dispatch);
+-        }
+-      });
+-    };
+-    zoom.translate = function(_) {
+-      if (!arguments.length) return [ view.x, view.y ];
+-      view = {
+-        x: +_[0],
+-        y: +_[1],
+-        k: view.k
+-      };
+-      rescale();
+-      return zoom;
+-    };
+-    zoom.scale = function(_) {
+-      if (!arguments.length) return view.k;
+-      view = {
+-        x: view.x,
+-        y: view.y,
+-        k: null
+-      };
+-      scaleTo(+_);
+-      rescale();
+-      return zoom;
+-    };
+-    zoom.scaleExtent = function(_) {
+-      if (!arguments.length) return scaleExtent;
+-      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
+-      return zoom;
+-    };
+-    zoom.center = function(_) {
+-      if (!arguments.length) return center;
+-      center = _ && [ +_[0], +_[1] ];
+-      return zoom;
+-    };
+-    zoom.size = function(_) {
+-      if (!arguments.length) return size;
+-      size = _ && [ +_[0], +_[1] ];
+-      return zoom;
+-    };
+-    zoom.duration = function(_) {
+-      if (!arguments.length) return duration;
+-      duration = +_;
+-      return zoom;
+-    };
+-    zoom.x = function(z) {
+-      if (!arguments.length) return x1;
+-      x1 = z;
+-      x0 = z.copy();
+-      view = {
+-        x: 0,
+-        y: 0,
+-        k: 1
+-      };
+-      return zoom;
+-    };
+-    zoom.y = function(z) {
+-      if (!arguments.length) return y1;
+-      y1 = z;
+-      y0 = z.copy();
+-      view = {
+-        x: 0,
+-        y: 0,
+-        k: 1
+-      };
+-      return zoom;
+-    };
+-    function location(p) {
+-      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
+-    }
+-    function point(l) {
+-      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
+-    }
+-    function scaleTo(s) {
+-      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
+-    }
+-    function translateTo(p, l) {
+-      l = point(l);
+-      view.x += p[0] - l[0];
+-      view.y += p[1] - l[1];
+-    }
+-    function zoomTo(that, p, l, k) {
+-      that.__chart__ = {
+-        x: view.x,
+-        y: view.y,
+-        k: view.k
+-      };
+-      scaleTo(Math.pow(2, k));
+-      translateTo(center0 = p, l);
+-      that = d3.select(that);
+-      if (duration > 0) that = that.transition().duration(duration);
+-      that.call(zoom.event);
+-    }
+-    function rescale() {
+-      if (x1) x1.domain(x0.range().map(function(x) {
+-        return (x - view.x) / view.k;
+-      }).map(x0.invert));
+-      if (y1) y1.domain(y0.range().map(function(y) {
+-        return (y - view.y) / view.k;
+-      }).map(y0.invert));
+-    }
+-    function zoomstarted(dispatch) {
+-      if (!zooming++) dispatch({
+-        type: "zoomstart"
+-      });
+-    }
+-    function zoomed(dispatch) {
+-      rescale();
+-      dispatch({
+-        type: "zoom",
+-        scale: view.k,
+-        translate: [ view.x, view.y ]
+-      });
+-    }
+-    function zoomended(dispatch) {
+-      if (!--zooming) dispatch({
+-        type: "zoomend"
+-      }), center0 = null;
+-    }
+-    function mousedowned() {
+-      var that = this, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
+-      d3_selection_interrupt.call(that);
+-      zoomstarted(dispatch);
+-      function moved() {
+-        dragged = 1;
+-        translateTo(d3.mouse(that), location0);
+-        zoomed(dispatch);
+-      }
+-      function ended() {
+-        subject.on(mousemove, null).on(mouseup, null);
+-        dragRestore(dragged);
+-        zoomended(dispatch);
+-      }
+-    }
+-    function touchstarted() {
+-      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
+-      started();
+-      zoomstarted(dispatch);
+-      subject.on(mousedown, null).on(touchstart, started);
+-      function relocate() {
+-        var touches = d3.touches(that);
+-        scale0 = view.k;
+-        touches.forEach(function(t) {
+-          if (t.identifier in locations0) locations0[t.identifier] = location(t);
+-        });
+-        return touches;
+-      }
+-      function started() {
+-        var target = d3.event.target;
+-        d3.select(target).on(touchmove, moved).on(touchend, ended);
+-        targets.push(target);
+-        var changed = d3.event.changedTouches;
+-        for (var i = 0, n = changed.length; i < n; ++i) {
+-          locations0[changed[i].identifier] = null;
+-        }
+-        var touches = relocate(), now = Date.now();
+-        if (touches.length === 1) {
+-          if (now - touchtime < 500) {
+-            var p = touches[0];
+-            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
+-            d3_eventPreventDefault();
+-          }
+-          touchtime = now;
+-        } else if (touches.length > 1) {
+-          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
+-          distance0 = dx * dx + dy * dy;
+-        }
+-      }
+-      function moved() {
+-        var touches = d3.touches(that), p0, l0, p1, l1;
+-        d3_selection_interrupt.call(that);
+-        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
+-          p1 = touches[i];
+-          if (l1 = locations0[p1.identifier]) {
+-            if (l0) break;
+-            p0 = p1, l0 = l1;
+-          }
+-        }
+-        if (l1) {
+-          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
+-          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
+-          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
+-          scaleTo(scale1 * scale0);
+-        }
+-        touchtime = null;
+-        translateTo(p0, l0);
+-        zoomed(dispatch);
+-      }
+-      function ended() {
+-        if (d3.event.touches.length) {
+-          var changed = d3.event.changedTouches;
+-          for (var i = 0, n = changed.length; i < n; ++i) {
+-            delete locations0[changed[i].identifier];
+-          }
+-          for (var identifier in locations0) {
+-            return void relocate();
+-          }
+-        }
+-        d3.selectAll(targets).on(zoomName, null);
+-        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
+-        dragRestore();
+-        zoomended(dispatch);
+-      }
+-    }
+-    function mousewheeled() {
+-      var dispatch = event.of(this, arguments);
+-      if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this), 
+-      translate0 = location(center0 = center || d3.mouse(this)), zoomstarted(dispatch);
+-      mousewheelTimer = setTimeout(function() {
+-        mousewheelTimer = null;
+-        zoomended(dispatch);
+-      }, 50);
+-      d3_eventPreventDefault();
+-      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
+-      translateTo(center0, translate0);
+-      zoomed(dispatch);
+-    }
+-    function dblclicked() {
+-      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
+-      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
+-    }
+-    return d3.rebind(zoom, event, "on");
+-  };
+-  var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
+-  d3.color = d3_color;
+-  function d3_color() {}
+-  d3_color.prototype.toString = function() {
+-    return this.rgb() + "";
+-  };
+-  d3.hsl = d3_hsl;
+-  function d3_hsl(h, s, l) {
+-    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
+-  }
+-  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
+-  d3_hslPrototype.brighter = function(k) {
+-    k = Math.pow(.7, arguments.length ? k : 1);
+-    return new d3_hsl(this.h, this.s, this.l / k);
+-  };
+-  d3_hslPrototype.darker = function(k) {
+-    k = Math.pow(.7, arguments.length ? k : 1);
+-    return new d3_hsl(this.h, this.s, k * this.l);
+-  };
+-  d3_hslPrototype.rgb = function() {
+-    return d3_hsl_rgb(this.h, this.s, this.l);
+-  };
+-  function d3_hsl_rgb(h, s, l) {
+-    var m1, m2;
+-    h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
+-    s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
+-    l = l < 0 ? 0 : l > 1 ? 1 : l;
+-    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
+-    m1 = 2 * l - m2;
+-    function v(h) {
+-      if (h > 360) h -= 360; else if (h < 0) h += 360;
+-      if (h < 60) return m1 + (m2 - m1) * h / 60;
+-      if (h < 180) return m2;
+-      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
+-      return m1;
+-    }
+-    function vv(h) {
+-      return Math.round(v(h) * 255);
+-    }
+-    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
+-  }
+-  d3.hcl = d3_hcl;
+-  function d3_hcl(h, c, l) {
+-    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
+-  }
+-  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
+-  d3_hclPrototype.brighter = function(k) {
+-    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
+-  };
+-  d3_hclPrototype.darker = function(k) {
+-    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
+-  };
+-  d3_hclPrototype.rgb = function() {
+-    return d3_hcl_lab(this.h, this.c, this.l).rgb();
+-  };
+-  function d3_hcl_lab(h, c, l) {
+-    if (isNaN(h)) h = 0;
+-    if (isNaN(c)) c = 0;
+-    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
+-  }
+-  d3.lab = d3_lab;
+-  function d3_lab(l, a, b) {
+-    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
+-  }
+-  var d3_lab_K = 18;
+-  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
+-  var d3_labPrototype = d3_lab.prototype = new d3_color();
+-  d3_labPrototype.brighter = function(k) {
+-    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
+-  };
+-  d3_labPrototype.darker = function(k) {
+-    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
+-  };
+-  d3_labPrototype.rgb = function() {
+-    return d3_lab_rgb(this.l, this.a, this.b);
+-  };
+-  function d3_lab_rgb(l, a, b) {
+-    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
+-    x = d3_lab_xyz(x) * d3_lab_X;
+-    y = d3_lab_xyz(y) * d3_lab_Y;
+-    z = d3_lab_xyz(z) * d3_lab_Z;
+-    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
+-  }
+-  function d3_lab_hcl(l, a, b) {
+-    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
+-  }
+-  function d3_lab_xyz(x) {
+-    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
+-  }
+-  function d3_xyz_lab(x) {
+-    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
+-  }
+-  function d3_xyz_rgb(r) {
+-    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
+-  }
+-  d3.rgb = d3_rgb;
+-  function d3_rgb(r, g, b) {
+-    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
+-  }
+-  function d3_rgbNumber(value) {
+-    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
+-  }
+-  function d3_rgbString(value) {
+-    return d3_rgbNumber(value) + "";
+-  }
+-  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
+-  d3_rgbPrototype.brighter = function(k) {
+-    k = Math.pow(.7, arguments.length ? k : 1);
+-    var r = this.r, g = this.g, b = this.b, i = 30;
+-    if (!r && !g && !b) return new d3_rgb(i, i, i);
+-    if (r && r < i) r = i;
+-    if (g && g < i) g = i;
+-    if (b && b < i) b = i;
+-    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
+-  };
+-  d3_rgbPrototype.darker = function(k) {
+-    k = Math.pow(.7, arguments.length ? k : 1);
+-    return new d3_rgb(k * this.r, k * this.g, k * this.b);
+-  };
+-  d3_rgbPrototype.hsl = function() {
+-    return d3_rgb_hsl(this.r, this.g, this.b);
+-  };
+-  d3_rgbPrototype.toString = function() {
+-    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
+-  };
+-  function d3_rgb_hex(v) {
+-    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
+-  }
+-  function d3_rgb_parse(format, rgb, hsl) {
+-    var r = 0, g = 0, b = 0, m1, m2, color;
+-    m1 = /([a-z]+)\((.*)\)/.exec(format = format.toLowerCase());
+-    if (m1) {
+-      m2 = m1[2].split(",");
+-      switch (m1[1]) {
+-       case "hsl":
+-        {
+-          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
+-        }
+-
+-       case "rgb":
+-        {
+-          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
+-        }
+-      }
+-    }
+-    if (color = d3_rgb_names.get(format)) {
+-      return rgb(color.r, color.g, color.b);
+-    }
+-    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
+-      if (format.length === 4) {
+-        r = (color & 3840) >> 4;
+-        r = r >> 4 | r;
+-        g = color & 240;
+-        g = g >> 4 | g;
+-        b = color & 15;
+-        b = b << 4 | b;
+-      } else if (format.length === 7) {
+-        r = (color & 16711680) >> 16;
+-        g = (color & 65280) >> 8;
+-        b = color & 255;
+-      }
+-    }
+-    return rgb(r, g, b);
+-  }
+-  function d3_rgb_hsl(r, g, b) {
+-    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
+-    if (d) {
+-      s = l < .5 ? d / (max + min) : d / (2 - max - min);
+-      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
+-      h *= 60;
+-    } else {
+-      h = NaN;
+-      s = l > 0 && l < 1 ? 0 : h;
+-    }
+-    return new d3_hsl(h, s, l);
+-  }
+-  function d3_rgb_lab(r, g, b) {
+-    r = d3_rgb_xyz(r);
+-    g = d3_rgb_xyz(g);
+-    b = d3_rgb_xyz(b);
+-    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
+-    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
+-  }
+-  function d3_rgb_xyz(r) {
+-    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
+-  }
+-  function d3_rgb_parseNumber(c) {
+-    var f = parseFloat(c);
+-    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
++  function d3_rgb_parseNumber(c) {
++    var f = parseFloat(c);
++    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
+   }
+   var d3_rgb_names = d3.map({
+     aliceblue: 15792383,
+@@ -5361,7 +4321,7 @@ function hasOwnProperty(obj, prop) {
+         λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
+       }
+     }
+-    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
++    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
+   }
+   function d3_geo_clipCircle(radius) {
+     var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
+@@ -11388,29882 +10348,32739 @@ function hasOwnProperty(obj, prop) {
+   });
+   if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
+ }();
+-},{}],14:[function(require,module,exports){
++},{}],9:[function(require,module,exports){
+ (function (process,global){
+ /*!
+  * @overview es6-promise - a tiny implementation of Promises/A+.
+  * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
+  * @license   Licensed under MIT license
+- *            See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
+- * @version   3.1.2
++ *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
++ * @version   3.3.1
+  */
+ 
+-(function() {
+-    "use strict";
+-    function lib$es6$promise$utils$$objectOrFunction(x) {
+-      return typeof x === 'function' || (typeof x === 'object' && x !== null);
+-    }
++(function (global, factory) {
++    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
++    typeof define === 'function' && define.amd ? define(factory) :
++    (global.ES6Promise = factory());
++}(this, (function () { 'use strict';
+ 
+-    function lib$es6$promise$utils$$isFunction(x) {
+-      return typeof x === 'function';
+-    }
++function objectOrFunction(x) {
++  return typeof x === 'function' || typeof x === 'object' && x !== null;
++}
+ 
+-    function lib$es6$promise$utils$$isMaybeThenable(x) {
+-      return typeof x === 'object' && x !== null;
+-    }
++function isFunction(x) {
++  return typeof x === 'function';
++}
+ 
+-    var lib$es6$promise$utils$$_isArray;
+-    if (!Array.isArray) {
+-      lib$es6$promise$utils$$_isArray = function (x) {
+-        return Object.prototype.toString.call(x) === '[object Array]';
+-      };
++var _isArray = undefined;
++if (!Array.isArray) {
++  _isArray = function (x) {
++    return Object.prototype.toString.call(x) === '[object Array]';
++  };
++} else {
++  _isArray = Array.isArray;
++}
++
++var isArray = _isArray;
++
++var len = 0;
++var vertxNext = undefined;
++var customSchedulerFn = undefined;
++
++var asap = function asap(callback, arg) {
++  queue[len] = callback;
++  queue[len + 1] = arg;
++  len += 2;
++  if (len === 2) {
++    // If len is 2, that means that we need to schedule an async flush.
++    // If additional callbacks are queued before the queue is flushed, they
++    // will be processed by this flush that we are scheduling.
++    if (customSchedulerFn) {
++      customSchedulerFn(flush);
+     } else {
+-      lib$es6$promise$utils$$_isArray = Array.isArray;
+-    }
+-
+-    var lib$es6$promise$utils$$isArray = lib$es6$promise$utils$$_isArray;
+-    var lib$es6$promise$asap$$len = 0;
+-    var lib$es6$promise$asap$$vertxNext;
+-    var lib$es6$promise$asap$$customSchedulerFn;
+-
+-    var lib$es6$promise$asap$$asap = function asap(callback, arg) {
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len] = callback;
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len + 1] = arg;
+-      lib$es6$promise$asap$$len += 2;
+-      if (lib$es6$promise$asap$$len === 2) {
+-        // If len is 2, that means that we need to schedule an async flush.
+-        // If additional callbacks are queued before the queue is flushed, they
+-        // will be processed by this flush that we are scheduling.
+-        if (lib$es6$promise$asap$$customSchedulerFn) {
+-          lib$es6$promise$asap$$customSchedulerFn(lib$es6$promise$asap$$flush);
+-        } else {
+-          lib$es6$promise$asap$$scheduleFlush();
+-        }
+-      }
++      scheduleFlush();
+     }
++  }
++};
+ 
+-    function lib$es6$promise$asap$$setScheduler(scheduleFn) {
+-      lib$es6$promise$asap$$customSchedulerFn = scheduleFn;
+-    }
++function setScheduler(scheduleFn) {
++  customSchedulerFn = scheduleFn;
++}
+ 
+-    function lib$es6$promise$asap$$setAsap(asapFn) {
+-      lib$es6$promise$asap$$asap = asapFn;
+-    }
++function setAsap(asapFn) {
++  asap = asapFn;
++}
+ 
+-    var lib$es6$promise$asap$$browserWindow = (typeof window !== 'undefined') ? window : undefined;
+-    var lib$es6$promise$asap$$browserGlobal = lib$es6$promise$asap$$browserWindow || {};
+-    var lib$es6$promise$asap$$BrowserMutationObserver = lib$es6$promise$asap$$browserGlobal.MutationObserver || lib$es6$promise$asap$$browserGlobal.WebKitMutationObserver;
+-    var lib$es6$promise$asap$$isNode = typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';
++var browserWindow = typeof window !== 'undefined' ? window : undefined;
++var browserGlobal = browserWindow || {};
++var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
++var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]';
+ 
+-    // test for web worker but not in IE10
+-    var lib$es6$promise$asap$$isWorker = typeof Uint8ClampedArray !== 'undefined' &&
+-      typeof importScripts !== 'undefined' &&
+-      typeof MessageChannel !== 'undefined';
++// test for web worker but not in IE10
++var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined';
+ 
+-    // node
+-    function lib$es6$promise$asap$$useNextTick() {
+-      // node version 0.10.x displays a deprecation warning when nextTick is used recursively
+-      // see https://github.com/cujojs/when/issues/410 for details
+-      return function() {
+-        process.nextTick(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// node
++function useNextTick() {
++  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
++  // see https://github.com/cujojs/when/issues/410 for details
++  return function () {
++    return process.nextTick(flush);
++  };
++}
+ 
+-    // vertx
+-    function lib$es6$promise$asap$$useVertxTimer() {
+-      return function() {
+-        lib$es6$promise$asap$$vertxNext(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// vertx
++function useVertxTimer() {
++  return function () {
++    vertxNext(flush);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useMutationObserver() {
+-      var iterations = 0;
+-      var observer = new lib$es6$promise$asap$$BrowserMutationObserver(lib$es6$promise$asap$$flush);
+-      var node = document.createTextNode('');
+-      observer.observe(node, { characterData: true });
++function useMutationObserver() {
++  var iterations = 0;
++  var observer = new BrowserMutationObserver(flush);
++  var node = document.createTextNode('');
++  observer.observe(node, { characterData: true });
+ 
+-      return function() {
+-        node.data = (iterations = ++iterations % 2);
+-      };
+-    }
++  return function () {
++    node.data = iterations = ++iterations % 2;
++  };
++}
+ 
+-    // web worker
+-    function lib$es6$promise$asap$$useMessageChannel() {
+-      var channel = new MessageChannel();
+-      channel.port1.onmessage = lib$es6$promise$asap$$flush;
+-      return function () {
+-        channel.port2.postMessage(0);
+-      };
+-    }
++// web worker
++function useMessageChannel() {
++  var channel = new MessageChannel();
++  channel.port1.onmessage = flush;
++  return function () {
++    return channel.port2.postMessage(0);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useSetTimeout() {
+-      return function() {
+-        setTimeout(lib$es6$promise$asap$$flush, 1);
+-      };
+-    }
++function useSetTimeout() {
++  // Store setTimeout reference so es6-promise will be unaffected by
++  // other code modifying setTimeout (like sinon.useFakeTimers())
++  var globalSetTimeout = setTimeout;
++  return function () {
++    return globalSetTimeout(flush, 1);
++  };
++}
+ 
+-    var lib$es6$promise$asap$$queue = new Array(1000);
+-    function lib$es6$promise$asap$$flush() {
+-      for (var i = 0; i < lib$es6$promise$asap$$len; i+=2) {
+-        var callback = lib$es6$promise$asap$$queue[i];
+-        var arg = lib$es6$promise$asap$$queue[i+1];
++var queue = new Array(1000);
++function flush() {
++  for (var i = 0; i < len; i += 2) {
++    var callback = queue[i];
++    var arg = queue[i + 1];
+ 
+-        callback(arg);
++    callback(arg);
+ 
+-        lib$es6$promise$asap$$queue[i] = undefined;
+-        lib$es6$promise$asap$$queue[i+1] = undefined;
+-      }
++    queue[i] = undefined;
++    queue[i + 1] = undefined;
++  }
+ 
+-      lib$es6$promise$asap$$len = 0;
+-    }
++  len = 0;
++}
+ 
+-    function lib$es6$promise$asap$$attemptVertx() {
+-      try {
+-        var r = require;
+-        var vertx = r('vertx');
+-        lib$es6$promise$asap$$vertxNext = vertx.runOnLoop || vertx.runOnContext;
+-        return lib$es6$promise$asap$$useVertxTimer();
+-      } catch(e) {
+-        return lib$es6$promise$asap$$useSetTimeout();
+-      }
+-    }
++function attemptVertx() {
++  try {
++    var r = require;
++    var vertx = r('vertx');
++    vertxNext = vertx.runOnLoop || vertx.runOnContext;
++    return useVertxTimer();
++  } catch (e) {
++    return useSetTimeout();
++  }
++}
+ 
+-    var lib$es6$promise$asap$$scheduleFlush;
+-    // Decide what async method to use to triggering processing of queued callbacks:
+-    if (lib$es6$promise$asap$$isNode) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useNextTick();
+-    } else if (lib$es6$promise$asap$$BrowserMutationObserver) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMutationObserver();
+-    } else if (lib$es6$promise$asap$$isWorker) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMessageChannel();
+-    } else if (lib$es6$promise$asap$$browserWindow === undefined && typeof require === 'function') {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$attemptVertx();
+-    } else {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useSetTimeout();
+-    }
+-    function lib$es6$promise$then$$then(onFulfillment, onRejection) {
+-      var parent = this;
+-      var state = parent._state;
++var scheduleFlush = undefined;
++// Decide what async method to use to triggering processing of queued callbacks:
++if (isNode) {
++  scheduleFlush = useNextTick();
++} else if (BrowserMutationObserver) {
++  scheduleFlush = useMutationObserver();
++} else if (isWorker) {
++  scheduleFlush = useMessageChannel();
++} else if (browserWindow === undefined && typeof require === 'function') {
++  scheduleFlush = attemptVertx();
++} else {
++  scheduleFlush = useSetTimeout();
++}
+ 
+-      if (state === lib$es6$promise$$internal$$FULFILLED && !onFulfillment || state === lib$es6$promise$$internal$$REJECTED && !onRejection) {
+-        return this;
+-      }
++function then(onFulfillment, onRejection) {
++  var _arguments = arguments;
+ 
+-      var child = new this.constructor(lib$es6$promise$$internal$$noop);
+-      var result = parent._result;
++  var parent = this;
+ 
+-      if (state) {
+-        var callback = arguments[state - 1];
+-        lib$es6$promise$asap$$asap(function(){
+-          lib$es6$promise$$internal$$invokeCallback(state, child, callback, result);
+-        });
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection);
+-      }
++  var child = new this.constructor(noop);
+ 
+-      return child;
+-    }
+-    var lib$es6$promise$then$$default = lib$es6$promise$then$$then;
+-    function lib$es6$promise$promise$resolve$$resolve(object) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++  if (child[PROMISE_ID] === undefined) {
++    makePromise(child);
++  }
+ 
+-      if (object && typeof object === 'object' && object.constructor === Constructor) {
+-        return object;
+-      }
++  var _state = parent._state;
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$resolve(promise, object);
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$resolve$$default = lib$es6$promise$promise$resolve$$resolve;
++  if (_state) {
++    (function () {
++      var callback = _arguments[_state - 1];
++      asap(function () {
++        return invokeCallback(_state, child, callback, parent._result);
++      });
++    })();
++  } else {
++    subscribe(parent, child, onFulfillment, onRejection);
++  }
+ 
+-    function lib$es6$promise$$internal$$noop() {}
++  return child;
++}
+ 
+-    var lib$es6$promise$$internal$$PENDING   = void 0;
+-    var lib$es6$promise$$internal$$FULFILLED = 1;
+-    var lib$es6$promise$$internal$$REJECTED  = 2;
++/**
++  `Promise.resolve` returns a promise that will become resolved with the
++  passed `value`. It is shorthand for the following:
+ 
+-    var lib$es6$promise$$internal$$GET_THEN_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    resolve(1);
++  });
+ 
+-    function lib$es6$promise$$internal$$selfFulfillment() {
+-      return new TypeError("You cannot resolve a promise with itself");
+-    }
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
+ 
+-    function lib$es6$promise$$internal$$cannotReturnOwn() {
+-      return new TypeError('A promises callback cannot return that same promise.');
+-    }
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-    function lib$es6$promise$$internal$$getThen(promise) {
+-      try {
+-        return promise.then;
+-      } catch(error) {
+-        lib$es6$promise$$internal$$GET_THEN_ERROR.error = error;
+-        return lib$es6$promise$$internal$$GET_THEN_ERROR;
+-      }
+-    }
++  ```javascript
++  let promise = Promise.resolve(1);
+ 
+-    function lib$es6$promise$$internal$$tryThen(then, value, fulfillmentHandler, rejectionHandler) {
+-      try {
+-        then.call(value, fulfillmentHandler, rejectionHandler);
+-      } catch(e) {
+-        return e;
+-      }
+-    }
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
++
++  @method resolve
++  @static
++  @param {Any} value value that the returned promise will be resolved with
++  Useful for tooling.
++  @return {Promise} a promise that will become fulfilled with the given
++  `value`
++*/
++function resolve(object) {
++  /*jshint validthis:true */
++  var Constructor = this;
+ 
+-    function lib$es6$promise$$internal$$handleForeignThenable(promise, thenable, then) {
+-       lib$es6$promise$asap$$asap(function(promise) {
+-        var sealed = false;
+-        var error = lib$es6$promise$$internal$$tryThen(then, thenable, function(value) {
+-          if (sealed) { return; }
+-          sealed = true;
+-          if (thenable !== value) {
+-            lib$es6$promise$$internal$$resolve(promise, value);
+-          } else {
+-            lib$es6$promise$$internal$$fulfill(promise, value);
+-          }
+-        }, function(reason) {
+-          if (sealed) { return; }
+-          sealed = true;
++  if (object && typeof object === 'object' && object.constructor === Constructor) {
++    return object;
++  }
+ 
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        }, 'Settle: ' + (promise._label || ' unknown promise'));
++  var promise = new Constructor(noop);
++  _resolve(promise, object);
++  return promise;
++}
+ 
+-        if (!sealed && error) {
+-          sealed = true;
+-          lib$es6$promise$$internal$$reject(promise, error);
+-        }
+-      }, promise);
+-    }
++var PROMISE_ID = Math.random().toString(36).substring(16);
+ 
+-    function lib$es6$promise$$internal$$handleOwnThenable(promise, thenable) {
+-      if (thenable._state === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, thenable._result);
+-      } else if (thenable._state === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, thenable._result);
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(thenable, undefined, function(value) {
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      }
+-    }
++function noop() {}
+ 
+-    function lib$es6$promise$$internal$$handleMaybeThenable(promise, maybeThenable, then) {
+-      if (maybeThenable.constructor === promise.constructor &&
+-          then === lib$es6$promise$then$$default &&
+-          constructor.resolve === lib$es6$promise$promise$resolve$$default) {
+-        lib$es6$promise$$internal$$handleOwnThenable(promise, maybeThenable);
+-      } else {
+-        if (then === lib$es6$promise$$internal$$GET_THEN_ERROR) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$GET_THEN_ERROR.error);
+-        } else if (then === undefined) {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        } else if (lib$es6$promise$utils$$isFunction(then)) {
+-          lib$es6$promise$$internal$$handleForeignThenable(promise, maybeThenable, then);
+-        } else {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        }
+-      }
+-    }
++var PENDING = void 0;
++var FULFILLED = 1;
++var REJECTED = 2;
+ 
+-    function lib$es6$promise$$internal$$resolve(promise, value) {
+-      if (promise === value) {
+-        lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$selfFulfillment());
+-      } else if (lib$es6$promise$utils$$objectOrFunction(value)) {
+-        lib$es6$promise$$internal$$handleMaybeThenable(promise, value, lib$es6$promise$$internal$$getThen(value));
+-      } else {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      }
+-    }
++var GET_THEN_ERROR = new ErrorObject();
+ 
+-    function lib$es6$promise$$internal$$publishRejection(promise) {
+-      if (promise._onerror) {
+-        promise._onerror(promise._result);
+-      }
++function selfFulfillment() {
++  return new TypeError("You cannot resolve a promise with itself");
++}
+ 
+-      lib$es6$promise$$internal$$publish(promise);
+-    }
++function cannotReturnOwn() {
++  return new TypeError('A promises callback cannot return that same promise.');
++}
+ 
+-    function lib$es6$promise$$internal$$fulfill(promise, value) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
++function getThen(promise) {
++  try {
++    return promise.then;
++  } catch (error) {
++    GET_THEN_ERROR.error = error;
++    return GET_THEN_ERROR;
++  }
++}
+ 
+-      promise._result = value;
+-      promise._state = lib$es6$promise$$internal$$FULFILLED;
++function tryThen(then, value, fulfillmentHandler, rejectionHandler) {
++  try {
++    then.call(value, fulfillmentHandler, rejectionHandler);
++  } catch (e) {
++    return e;
++  }
++}
+ 
+-      if (promise._subscribers.length !== 0) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, promise);
++function handleForeignThenable(promise, thenable, then) {
++  asap(function (promise) {
++    var sealed = false;
++    var error = tryThen(then, thenable, function (value) {
++      if (sealed) {
++        return;
+       }
+-    }
++      sealed = true;
++      if (thenable !== value) {
++        _resolve(promise, value);
++      } else {
++        fulfill(promise, value);
++      }
++    }, function (reason) {
++      if (sealed) {
++        return;
++      }
++      sealed = true;
+ 
+-    function lib$es6$promise$$internal$$reject(promise, reason) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
+-      promise._state = lib$es6$promise$$internal$$REJECTED;
+-      promise._result = reason;
++      _reject(promise, reason);
++    }, 'Settle: ' + (promise._label || ' unknown promise'));
+ 
+-      lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publishRejection, promise);
++    if (!sealed && error) {
++      sealed = true;
++      _reject(promise, error);
+     }
++  }, promise);
++}
+ 
+-    function lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection) {
+-      var subscribers = parent._subscribers;
+-      var length = subscribers.length;
+-
+-      parent._onerror = null;
+-
+-      subscribers[length] = child;
+-      subscribers[length + lib$es6$promise$$internal$$FULFILLED] = onFulfillment;
+-      subscribers[length + lib$es6$promise$$internal$$REJECTED]  = onRejection;
++function handleOwnThenable(promise, thenable) {
++  if (thenable._state === FULFILLED) {
++    fulfill(promise, thenable._result);
++  } else if (thenable._state === REJECTED) {
++    _reject(promise, thenable._result);
++  } else {
++    subscribe(thenable, undefined, function (value) {
++      return _resolve(promise, value);
++    }, function (reason) {
++      return _reject(promise, reason);
++    });
++  }
++}
+ 
+-      if (length === 0 && parent._state) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, parent);
+-      }
++function handleMaybeThenable(promise, maybeThenable, then$$) {
++  if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) {
++    handleOwnThenable(promise, maybeThenable);
++  } else {
++    if (then$$ === GET_THEN_ERROR) {
++      _reject(promise, GET_THEN_ERROR.error);
++    } else if (then$$ === undefined) {
++      fulfill(promise, maybeThenable);
++    } else if (isFunction(then$$)) {
++      handleForeignThenable(promise, maybeThenable, then$$);
++    } else {
++      fulfill(promise, maybeThenable);
+     }
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$publish(promise) {
+-      var subscribers = promise._subscribers;
+-      var settled = promise._state;
++function _resolve(promise, value) {
++  if (promise === value) {
++    _reject(promise, selfFulfillment());
++  } else if (objectOrFunction(value)) {
++    handleMaybeThenable(promise, value, getThen(value));
++  } else {
++    fulfill(promise, value);
++  }
++}
+ 
+-      if (subscribers.length === 0) { return; }
++function publishRejection(promise) {
++  if (promise._onerror) {
++    promise._onerror(promise._result);
++  }
+ 
+-      var child, callback, detail = promise._result;
++  publish(promise);
++}
+ 
+-      for (var i = 0; i < subscribers.length; i += 3) {
+-        child = subscribers[i];
+-        callback = subscribers[i + settled];
++function fulfill(promise, value) {
++  if (promise._state !== PENDING) {
++    return;
++  }
+ 
+-        if (child) {
+-          lib$es6$promise$$internal$$invokeCallback(settled, child, callback, detail);
+-        } else {
+-          callback(detail);
+-        }
+-      }
++  promise._result = value;
++  promise._state = FULFILLED;
+ 
+-      promise._subscribers.length = 0;
+-    }
++  if (promise._subscribers.length !== 0) {
++    asap(publish, promise);
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$ErrorObject() {
+-      this.error = null;
+-    }
++function _reject(promise, reason) {
++  if (promise._state !== PENDING) {
++    return;
++  }
++  promise._state = REJECTED;
++  promise._result = reason;
+ 
+-    var lib$es6$promise$$internal$$TRY_CATCH_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++  asap(publishRejection, promise);
++}
+ 
+-    function lib$es6$promise$$internal$$tryCatch(callback, detail) {
+-      try {
+-        return callback(detail);
+-      } catch(e) {
+-        lib$es6$promise$$internal$$TRY_CATCH_ERROR.error = e;
+-        return lib$es6$promise$$internal$$TRY_CATCH_ERROR;
+-      }
+-    }
++function subscribe(parent, child, onFulfillment, onRejection) {
++  var _subscribers = parent._subscribers;
++  var length = _subscribers.length;
+ 
+-    function lib$es6$promise$$internal$$invokeCallback(settled, promise, callback, detail) {
+-      var hasCallback = lib$es6$promise$utils$$isFunction(callback),
+-          value, error, succeeded, failed;
++  parent._onerror = null;
+ 
+-      if (hasCallback) {
+-        value = lib$es6$promise$$internal$$tryCatch(callback, detail);
++  _subscribers[length] = child;
++  _subscribers[length + FULFILLED] = onFulfillment;
++  _subscribers[length + REJECTED] = onRejection;
+ 
+-        if (value === lib$es6$promise$$internal$$TRY_CATCH_ERROR) {
+-          failed = true;
+-          error = value.error;
+-          value = null;
+-        } else {
+-          succeeded = true;
+-        }
++  if (length === 0 && parent._state) {
++    asap(publish, parent);
++  }
++}
+ 
+-        if (promise === value) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$cannotReturnOwn());
+-          return;
+-        }
++function publish(promise) {
++  var subscribers = promise._subscribers;
++  var settled = promise._state;
+ 
+-      } else {
+-        value = detail;
+-        succeeded = true;
+-      }
++  if (subscribers.length === 0) {
++    return;
++  }
+ 
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) {
+-        // noop
+-      } else if (hasCallback && succeeded) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      } else if (failed) {
+-        lib$es6$promise$$internal$$reject(promise, error);
+-      } else if (settled === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      } else if (settled === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, value);
+-      }
+-    }
++  var child = undefined,
++      callback = undefined,
++      detail = promise._result;
+ 
+-    function lib$es6$promise$$internal$$initializePromise(promise, resolver) {
+-      try {
+-        resolver(function resolvePromise(value){
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function rejectPromise(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      } catch(e) {
+-        lib$es6$promise$$internal$$reject(promise, e);
+-      }
+-    }
++  for (var i = 0; i < subscribers.length; i += 3) {
++    child = subscribers[i];
++    callback = subscribers[i + settled];
+ 
+-    function lib$es6$promise$promise$all$$all(entries) {
+-      return new lib$es6$promise$enumerator$$default(this, entries).promise;
++    if (child) {
++      invokeCallback(settled, child, callback, detail);
++    } else {
++      callback(detail);
+     }
+-    var lib$es6$promise$promise$all$$default = lib$es6$promise$promise$all$$all;
+-    function lib$es6$promise$promise$race$$race(entries) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++  }
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
++  promise._subscribers.length = 0;
++}
+ 
+-      if (!lib$es6$promise$utils$$isArray(entries)) {
+-        lib$es6$promise$$internal$$reject(promise, new TypeError('You must pass an array to race.'));
+-        return promise;
+-      }
++function ErrorObject() {
++  this.error = null;
++}
+ 
+-      var length = entries.length;
++var TRY_CATCH_ERROR = new ErrorObject();
+ 
+-      function onFulfillment(value) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      }
++function tryCatch(callback, detail) {
++  try {
++    return callback(detail);
++  } catch (e) {
++    TRY_CATCH_ERROR.error = e;
++    return TRY_CATCH_ERROR;
++  }
++}
+ 
+-      function onRejection(reason) {
+-        lib$es6$promise$$internal$$reject(promise, reason);
+-      }
++function invokeCallback(settled, promise, callback, detail) {
++  var hasCallback = isFunction(callback),
++      value = undefined,
++      error = undefined,
++      succeeded = undefined,
++      failed = undefined;
+ 
+-      for (var i = 0; promise._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        lib$es6$promise$$internal$$subscribe(Constructor.resolve(entries[i]), undefined, onFulfillment, onRejection);
+-      }
++  if (hasCallback) {
++    value = tryCatch(callback, detail);
+ 
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$race$$default = lib$es6$promise$promise$race$$race;
+-    function lib$es6$promise$promise$reject$$reject(reason) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$reject(promise, reason);
+-      return promise;
++    if (value === TRY_CATCH_ERROR) {
++      failed = true;
++      error = value.error;
++      value = null;
++    } else {
++      succeeded = true;
+     }
+-    var lib$es6$promise$promise$reject$$default = lib$es6$promise$promise$reject$$reject;
+ 
+-    var lib$es6$promise$promise$$counter = 0;
+-
+-    function lib$es6$promise$promise$$needsResolver() {
+-      throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++    if (promise === value) {
++      _reject(promise, cannotReturnOwn());
++      return;
+     }
++  } else {
++    value = detail;
++    succeeded = true;
++  }
+ 
+-    function lib$es6$promise$promise$$needsNew() {
+-      throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++  if (promise._state !== PENDING) {
++    // noop
++  } else if (hasCallback && succeeded) {
++      _resolve(promise, value);
++    } else if (failed) {
++      _reject(promise, error);
++    } else if (settled === FULFILLED) {
++      fulfill(promise, value);
++    } else if (settled === REJECTED) {
++      _reject(promise, value);
+     }
++}
+ 
+-    var lib$es6$promise$promise$$default = lib$es6$promise$promise$$Promise;
+-    /**
+-      Promise objects represent the eventual result of an asynchronous operation. The
+-      primary way of interacting with a promise is through its `then` method, which
+-      registers callbacks to receive either a promise's eventual value or the reason
+-      why the promise cannot be fulfilled.
++function initializePromise(promise, resolver) {
++  try {
++    resolver(function resolvePromise(value) {
++      _resolve(promise, value);
++    }, function rejectPromise(reason) {
++      _reject(promise, reason);
++    });
++  } catch (e) {
++    _reject(promise, e);
++  }
++}
+ 
+-      Terminology
+-      -----------
++var id = 0;
++function nextId() {
++  return id++;
++}
+ 
+-      - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
+-      - `thenable` is an object or function that defines a `then` method.
+-      - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
+-      - `exception` is a value that is thrown using the throw statement.
+-      - `reason` is a value that indicates why a promise was rejected.
+-      - `settled` the final resting state of a promise, fulfilled or rejected.
++function makePromise(promise) {
++  promise[PROMISE_ID] = id++;
++  promise._state = undefined;
++  promise._result = undefined;
++  promise._subscribers = [];
++}
+ 
+-      A promise can be in one of three states: pending, fulfilled, or rejected.
++function Enumerator(Constructor, input) {
++  this._instanceConstructor = Constructor;
++  this.promise = new Constructor(noop);
+ 
+-      Promises that are fulfilled have a fulfillment value and are in the fulfilled
+-      state.  Promises that are rejected have a rejection reason and are in the
+-      rejected state.  A fulfillment value is never a thenable.
++  if (!this.promise[PROMISE_ID]) {
++    makePromise(this.promise);
++  }
+ 
+-      Promises can also be said to *resolve* a value.  If this value is also a
+-      promise, then the original promise's settled state will match the value's
+-      settled state.  So a promise that *resolves* a promise that rejects will
+-      itself reject, and a promise that *resolves* a promise that fulfills will
+-      itself fulfill.
++  if (isArray(input)) {
++    this._input = input;
++    this.length = input.length;
++    this._remaining = input.length;
+ 
++    this._result = new Array(this.length);
+ 
+-      Basic Usage:
+-      ------------
++    if (this.length === 0) {
++      fulfill(this.promise, this._result);
++    } else {
++      this.length = this.length || 0;
++      this._enumerate();
++      if (this._remaining === 0) {
++        fulfill(this.promise, this._result);
++      }
++    }
++  } else {
++    _reject(this.promise, validationError());
++  }
++}
+ 
+-      ```js
+-      var promise = new Promise(function(resolve, reject) {
+-        // on success
+-        resolve(value);
++function validationError() {
++  return new Error('Array Methods must be provided an Array');
++};
+ 
+-        // on failure
+-        reject(reason);
+-      });
++Enumerator.prototype._enumerate = function () {
++  var length = this.length;
++  var _input = this._input;
+ 
+-      promise.then(function(value) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++  for (var i = 0; this._state === PENDING && i < length; i++) {
++    this._eachEntry(_input[i], i);
++  }
++};
+ 
+-      Advanced Usage:
+-      ---------------
++Enumerator.prototype._eachEntry = function (entry, i) {
++  var c = this._instanceConstructor;
++  var resolve$$ = c.resolve;
+ 
+-      Promises shine when abstracting away asynchronous interactions such as
+-      `XMLHttpRequest`s.
++  if (resolve$$ === resolve) {
++    var _then = getThen(entry);
+ 
+-      ```js
+-      function getJSON(url) {
+-        return new Promise(function(resolve, reject){
+-          var xhr = new XMLHttpRequest();
++    if (_then === then && entry._state !== PENDING) {
++      this._settledAt(entry._state, i, entry._result);
++    } else if (typeof _then !== 'function') {
++      this._remaining--;
++      this._result[i] = entry;
++    } else if (c === Promise) {
++      var promise = new c(noop);
++      handleMaybeThenable(promise, entry, _then);
++      this._willSettleAt(promise, i);
++    } else {
++      this._willSettleAt(new c(function (resolve$$) {
++        return resolve$$(entry);
++      }), i);
++    }
++  } else {
++    this._willSettleAt(resolve$$(entry), i);
++  }
++};
+ 
+-          xhr.open('GET', url);
+-          xhr.onreadystatechange = handler;
+-          xhr.responseType = 'json';
+-          xhr.setRequestHeader('Accept', 'application/json');
+-          xhr.send();
++Enumerator.prototype._settledAt = function (state, i, value) {
++  var promise = this.promise;
+ 
+-          function handler() {
+-            if (this.readyState === this.DONE) {
+-              if (this.status === 200) {
+-                resolve(this.response);
+-              } else {
+-                reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
+-              }
+-            }
+-          };
+-        });
+-      }
++  if (promise._state === PENDING) {
++    this._remaining--;
+ 
+-      getJSON('/posts.json').then(function(json) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++    if (state === REJECTED) {
++      _reject(promise, value);
++    } else {
++      this._result[i] = value;
++    }
++  }
+ 
+-      Unlike callbacks, promises are great composable primitives.
++  if (this._remaining === 0) {
++    fulfill(promise, this._result);
++  }
++};
+ 
+-      ```js
+-      Promise.all([
+-        getJSON('/posts'),
+-        getJSON('/comments')
+-      ]).then(function(values){
+-        values[0] // => postsJSON
+-        values[1] // => commentsJSON
++Enumerator.prototype._willSettleAt = function (promise, i) {
++  var enumerator = this;
+ 
+-        return values;
+-      });
+-      ```
+-
+-      @class Promise
+-      @param {function} resolver
+-      Useful for tooling.
+-      @constructor
+-    */
+-    function lib$es6$promise$promise$$Promise(resolver) {
+-      this._id = lib$es6$promise$promise$$counter++;
+-      this._state = undefined;
+-      this._result = undefined;
+-      this._subscribers = [];
+-
+-      if (lib$es6$promise$$internal$$noop !== resolver) {
+-        typeof resolver !== 'function' && lib$es6$promise$promise$$needsResolver();
+-        this instanceof lib$es6$promise$promise$$Promise ? lib$es6$promise$$internal$$initializePromise(this, resolver) : lib$es6$promise$promise$$needsNew();
+-      }
+-    }
++  subscribe(promise, undefined, function (value) {
++    return enumerator._settledAt(FULFILLED, i, value);
++  }, function (reason) {
++    return enumerator._settledAt(REJECTED, i, reason);
++  });
++};
+ 
+-    lib$es6$promise$promise$$Promise.all = lib$es6$promise$promise$all$$default;
+-    lib$es6$promise$promise$$Promise.race = lib$es6$promise$promise$race$$default;
+-    lib$es6$promise$promise$$Promise.resolve = lib$es6$promise$promise$resolve$$default;
+-    lib$es6$promise$promise$$Promise.reject = lib$es6$promise$promise$reject$$default;
+-    lib$es6$promise$promise$$Promise._setScheduler = lib$es6$promise$asap$$setScheduler;
+-    lib$es6$promise$promise$$Promise._setAsap = lib$es6$promise$asap$$setAsap;
+-    lib$es6$promise$promise$$Promise._asap = lib$es6$promise$asap$$asap;
++/**
++  `Promise.all` accepts an array of promises, and returns a new promise which
++  is fulfilled with an array of fulfillment values for the passed promises, or
++  rejected with the reason of the first passed promise to be rejected. It casts all
++  elements of the passed iterable to promises as it runs this algorithm.
+ 
+-    lib$es6$promise$promise$$Promise.prototype = {
+-      constructor: lib$es6$promise$promise$$Promise,
++  Example:
+ 
+-    /**
+-      The primary way of interacting with a promise is through its `then` method,
+-      which registers callbacks to receive either a promise's eventual value or the
+-      reason why the promise cannot be fulfilled.
+-
+-      ```js
+-      findUser().then(function(user){
+-        // user is available
+-      }, function(reason){
+-        // user is unavailable, and you are given the reason why
+-      });
+-      ```
+-
+-      Chaining
+-      --------
+-
+-      The return value of `then` is itself a promise.  This second, 'downstream'
+-      promise is resolved with the return value of the first promise's fulfillment
+-      or rejection handler, or rejected if the handler throws an exception.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return user.name;
+-      }, function (reason) {
+-        return 'default name';
+-      }).then(function (userName) {
+-        // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
+-        // will be `'default name'`
+-      });
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = resolve(2);
++  let promise3 = resolve(3);
++  let promises = [ promise1, promise2, promise3 ];
+ 
+-      findUser().then(function (user) {
+-        throw new Error('Found user, but still unhappy');
+-      }, function (reason) {
+-        throw new Error('`findUser` rejected and we're unhappy');
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
+-        // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
+-      });
+-      ```
+-      If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        throw new PedagogicalException('Upstream error');
+-      }).then(function (value) {
+-        // never reached
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // The `PedgagocialException` is propagated all the way down to here
+-      });
+-      ```
++  Promise.all(promises).then(function(array){
++    // The array here would be [ 1, 2, 3 ];
++  });
++  ```
+ 
+-      Assimilation
+-      ------------
++  If any of the `promises` given to `all` are rejected, the first promise
++  that is rejected will be given as an argument to the returned promises's
++  rejection handler. For example:
+ 
+-      Sometimes the value you want to propagate to a downstream promise can only be
+-      retrieved asynchronously. This can be achieved by returning a promise in the
+-      fulfillment or rejection handler. The downstream promise will then be pending
+-      until the returned promise is settled. This is called *assimilation*.
++  Example:
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // The user's comments are now available
+-      });
+-      ```
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = reject(new Error("2"));
++  let promise3 = reject(new Error("3"));
++  let promises = [ promise1, promise2, promise3 ];
+ 
+-      If the assimliated promise rejects, then the downstream promise will also reject.
++  Promise.all(promises).then(function(array){
++    // Code here never runs because there are rejected promises!
++  }, function(error) {
++    // error.message === "2"
++  });
++  ```
++
++  @method all
++  @static
++  @param {Array} entries array of promises
++  @param {String} label optional string for labeling the promise.
++  Useful for tooling.
++  @return {Promise} promise that is fulfilled when all `promises` have been
++  fulfilled, or rejected if any of them become rejected.
++  @static
++*/
++function all(entries) {
++  return new Enumerator(this, entries).promise;
++}
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // If `findCommentsByAuthor` fulfills, we'll have the value here
+-      }, function (reason) {
+-        // If `findCommentsByAuthor` rejects, we'll have the reason here
+-      });
+-      ```
++/**
++  `Promise.race` returns a new promise which is settled in the same way as the
++  first passed promise to settle.
+ 
+-      Simple Example
+-      --------------
++  Example:
+ 
+-      Synchronous Example
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-      ```javascript
+-      var result;
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 2');
++    }, 100);
++  });
+ 
+-      try {
+-        result = findResult();
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
++  Promise.race([promise1, promise2]).then(function(result){
++    // result === 'promise 2' because it was resolved before promise1
++    // was resolved.
++  });
++  ```
++
++  `Promise.race` is deterministic in that only the state of the first
++  settled promise matters. For example, even if other promises given to the
++  `promises` array argument are resolved, but the first settled promise has
++  become rejected before the other promises became fulfilled, the returned
++  promise will become rejected:
++
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-      Errback Example
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      reject(new Error('promise 2'));
++    }, 100);
++  });
+ 
+-      ```js
+-      findResult(function(result, err){
+-        if (err) {
+-          // failure
+-        } else {
+-          // success
+-        }
+-      });
+-      ```
++  Promise.race([promise1, promise2]).then(function(result){
++    // Code here never runs
++  }, function(reason){
++    // reason.message === 'promise 2' because promise 2 became rejected before
++    // promise 1 became fulfilled
++  });
++  ```
+ 
+-      Promise Example;
++  An example real-world use case is implementing timeouts:
+ 
+-      ```javascript
+-      findResult().then(function(result){
+-        // success
+-      }, function(reason){
+-        // failure
+-      });
+-      ```
++  ```javascript
++  Promise.race([ajax('foo.json'), timeout(5000)])
++  ```
+ 
+-      Advanced Example
+-      --------------
++  @method race
++  @static
++  @param {Array} promises array of promises to observe
++  Useful for tooling.
++  @return {Promise} a promise which settles in the same way as the first passed
++  promise to settle.
++*/
++function race(entries) {
++  /*jshint validthis:true */
++  var Constructor = this;
+ 
+-      Synchronous Example
++  if (!isArray(entries)) {
++    return new Constructor(function (_, reject) {
++      return reject(new TypeError('You must pass an array to race.'));
++    });
++  } else {
++    return new Constructor(function (resolve, reject) {
++      var length = entries.length;
++      for (var i = 0; i < length; i++) {
++        Constructor.resolve(entries[i]).then(resolve, reject);
++      }
++    });
++  }
++}
+ 
+-      ```javascript
+-      var author, books;
++/**
++  `Promise.reject` returns a promise rejected with the passed `reason`.
++  It is shorthand for the following:
+ 
+-      try {
+-        author = findAuthor();
+-        books  = findBooksByAuthor(author);
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    reject(new Error('WHOOPS'));
++  });
+ 
+-      Errback Example
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      ```js
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-      function foundBooks(books) {
++  ```javascript
++  let promise = Promise.reject(new Error('WHOOPS'));
+ 
+-      }
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      function failure(reason) {
++  @method reject
++  @static
++  @param {Any} reason value that the returned promise will be rejected with.
++  Useful for tooling.
++  @return {Promise} a promise rejected with the given `reason`.
++*/
++function reject(reason) {
++  /*jshint validthis:true */
++  var Constructor = this;
++  var promise = new Constructor(noop);
++  _reject(promise, reason);
++  return promise;
++}
+ 
+-      }
++function needsResolver() {
++  throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++}
+ 
+-      findAuthor(function(author, err){
+-        if (err) {
+-          failure(err);
+-          // failure
+-        } else {
+-          try {
+-            findBoooksByAuthor(author, function(books, err) {
+-              if (err) {
+-                failure(err);
+-              } else {
+-                try {
+-                  foundBooks(books);
+-                } catch(reason) {
+-                  failure(reason);
+-                }
+-              }
+-            });
+-          } catch(error) {
+-            failure(err);
+-          }
+-          // success
+-        }
+-      });
+-      ```
++function needsNew() {
++  throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++}
+ 
+-      Promise Example;
++/**
++  Promise objects represent the eventual result of an asynchronous operation. The
++  primary way of interacting with a promise is through its `then` method, which
++  registers callbacks to receive either a promise's eventual value or the reason
++  why the promise cannot be fulfilled.
+ 
+-      ```javascript
+-      findAuthor().
+-        then(findBooksByAuthor).
+-        then(function(books){
+-          // found books
+-      }).catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
++  Terminology
++  -----------
+ 
+-      @method then
+-      @param {Function} onFulfilled
+-      @param {Function} onRejected
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      then: lib$es6$promise$then$$default,
++  - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
++  - `thenable` is an object or function that defines a `then` method.
++  - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
++  - `exception` is a value that is thrown using the throw statement.
++  - `reason` is a value that indicates why a promise was rejected.
++  - `settled` the final resting state of a promise, fulfilled or rejected.
+ 
+-    /**
+-      `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
+-      as the catch block of a try/catch statement.
++  A promise can be in one of three states: pending, fulfilled, or rejected.
+ 
+-      ```js
+-      function findAuthor(){
+-        throw new Error('couldn't find that author');
+-      }
++  Promises that are fulfilled have a fulfillment value and are in the fulfilled
++  state.  Promises that are rejected have a rejection reason and are in the
++  rejected state.  A fulfillment value is never a thenable.
+ 
+-      // synchronous
+-      try {
+-        findAuthor();
+-      } catch(reason) {
+-        // something went wrong
+-      }
++  Promises can also be said to *resolve* a value.  If this value is also a
++  promise, then the original promise's settled state will match the value's
++  settled state.  So a promise that *resolves* a promise that rejects will
++  itself reject, and a promise that *resolves* a promise that fulfills will
++  itself fulfill.
+ 
+-      // async with promises
+-      findAuthor().catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
+-
+-      @method catch
+-      @param {Function} onRejection
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      'catch': function(onRejection) {
+-        return this.then(null, onRejection);
+-      }
+-    };
+-    var lib$es6$promise$enumerator$$default = lib$es6$promise$enumerator$$Enumerator;
+-    function lib$es6$promise$enumerator$$Enumerator(Constructor, input) {
+-      this._instanceConstructor = Constructor;
+-      this.promise = new Constructor(lib$es6$promise$$internal$$noop);
+ 
+-      if (Array.isArray(input)) {
+-        this._input     = input;
+-        this.length     = input.length;
+-        this._remaining = input.length;
++  Basic Usage:
++  ------------
+ 
+-        this._result = new Array(this.length);
++  ```js
++  let promise = new Promise(function(resolve, reject) {
++    // on success
++    resolve(value);
+ 
+-        if (this.length === 0) {
+-          lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-        } else {
+-          this.length = this.length || 0;
+-          this._enumerate();
+-          if (this._remaining === 0) {
+-            lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-          }
+-        }
+-      } else {
+-        lib$es6$promise$$internal$$reject(this.promise, this._validationError());
+-      }
+-    }
++    // on failure
++    reject(reason);
++  });
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._validationError = function() {
+-      return new Error('Array Methods must be provided an Array');
+-    };
++  promise.then(function(value) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._enumerate = function() {
+-      var length  = this.length;
+-      var input   = this._input;
++  Advanced Usage:
++  ---------------
+ 
+-      for (var i = 0; this._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        this._eachEntry(input[i], i);
+-      }
+-    };
++  Promises shine when abstracting away asynchronous interactions such as
++  `XMLHttpRequest`s.
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._eachEntry = function(entry, i) {
+-      var c = this._instanceConstructor;
+-      var resolve = c.resolve;
+-
+-      if (resolve === lib$es6$promise$promise$resolve$$default) {
+-        var then = lib$es6$promise$$internal$$getThen(entry);
+-
+-        if (then === lib$es6$promise$then$$default &&
+-            entry._state !== lib$es6$promise$$internal$$PENDING) {
+-          this._settledAt(entry._state, i, entry._result);
+-        } else if (typeof then !== 'function') {
+-          this._remaining--;
+-          this._result[i] = entry;
+-        } else if (c === lib$es6$promise$promise$$default) {
+-          var promise = new c(lib$es6$promise$$internal$$noop);
+-          lib$es6$promise$$internal$$handleMaybeThenable(promise, entry, then);
+-          this._willSettleAt(promise, i);
+-        } else {
+-          this._willSettleAt(new c(function(resolve) { resolve(entry); }), i);
++  ```js
++  function getJSON(url) {
++    return new Promise(function(resolve, reject){
++      let xhr = new XMLHttpRequest();
++
++      xhr.open('GET', url);
++      xhr.onreadystatechange = handler;
++      xhr.responseType = 'json';
++      xhr.setRequestHeader('Accept', 'application/json');
++      xhr.send();
++
++      function handler() {
++        if (this.readyState === this.DONE) {
++          if (this.status === 200) {
++            resolve(this.response);
++          } else {
++            reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
++          }
+         }
+-      } else {
+-        this._willSettleAt(resolve(entry), i);
+-      }
+-    };
++      };
++    });
++  }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._settledAt = function(state, i, value) {
+-      var promise = this.promise;
++  getJSON('/posts.json').then(function(json) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
+ 
+-      if (promise._state === lib$es6$promise$$internal$$PENDING) {
+-        this._remaining--;
++  Unlike callbacks, promises are great composable primitives.
+ 
+-        if (state === lib$es6$promise$$internal$$REJECTED) {
+-          lib$es6$promise$$internal$$reject(promise, value);
+-        } else {
+-          this._result[i] = value;
+-        }
+-      }
++  ```js
++  Promise.all([
++    getJSON('/posts'),
++    getJSON('/comments')
++  ]).then(function(values){
++    values[0] // => postsJSON
++    values[1] // => commentsJSON
+ 
+-      if (this._remaining === 0) {
+-        lib$es6$promise$$internal$$fulfill(promise, this._result);
+-      }
+-    };
++    return values;
++  });
++  ```
++
++  @class Promise
++  @param {function} resolver
++  Useful for tooling.
++  @constructor
++*/
++function Promise(resolver) {
++  this[PROMISE_ID] = nextId();
++  this._result = this._state = undefined;
++  this._subscribers = [];
++
++  if (noop !== resolver) {
++    typeof resolver !== 'function' && needsResolver();
++    this instanceof Promise ? initializePromise(this, resolver) : needsNew();
++  }
++}
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._willSettleAt = function(promise, i) {
+-      var enumerator = this;
++Promise.all = all;
++Promise.race = race;
++Promise.resolve = resolve;
++Promise.reject = reject;
++Promise._setScheduler = setScheduler;
++Promise._setAsap = setAsap;
++Promise._asap = asap;
+ 
+-      lib$es6$promise$$internal$$subscribe(promise, undefined, function(value) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$FULFILLED, i, value);
+-      }, function(reason) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$REJECTED, i, reason);
+-      });
+-    };
+-    function lib$es6$promise$polyfill$$polyfill() {
+-      var local;
++Promise.prototype = {
++  constructor: Promise,
+ 
+-      if (typeof global !== 'undefined') {
+-          local = global;
+-      } else if (typeof self !== 'undefined') {
+-          local = self;
++  /**
++    The primary way of interacting with a promise is through its `then` method,
++    which registers callbacks to receive either a promise's eventual value or the
++    reason why the promise cannot be fulfilled.
++  
++    ```js
++    findUser().then(function(user){
++      // user is available
++    }, function(reason){
++      // user is unavailable, and you are given the reason why
++    });
++    ```
++  
++    Chaining
++    --------
++  
++    The return value of `then` is itself a promise.  This second, 'downstream'
++    promise is resolved with the return value of the first promise's fulfillment
++    or rejection handler, or rejected if the handler throws an exception.
++  
++    ```js
++    findUser().then(function (user) {
++      return user.name;
++    }, function (reason) {
++      return 'default name';
++    }).then(function (userName) {
++      // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
++      // will be `'default name'`
++    });
++  
++    findUser().then(function (user) {
++      throw new Error('Found user, but still unhappy');
++    }, function (reason) {
++      throw new Error('`findUser` rejected and we're unhappy');
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
++      // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
++    });
++    ```
++    If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
++  
++    ```js
++    findUser().then(function (user) {
++      throw new PedagogicalException('Upstream error');
++    }).then(function (value) {
++      // never reached
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // The `PedgagocialException` is propagated all the way down to here
++    });
++    ```
++  
++    Assimilation
++    ------------
++  
++    Sometimes the value you want to propagate to a downstream promise can only be
++    retrieved asynchronously. This can be achieved by returning a promise in the
++    fulfillment or rejection handler. The downstream promise will then be pending
++    until the returned promise is settled. This is called *assimilation*.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // The user's comments are now available
++    });
++    ```
++  
++    If the assimliated promise rejects, then the downstream promise will also reject.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // If `findCommentsByAuthor` fulfills, we'll have the value here
++    }, function (reason) {
++      // If `findCommentsByAuthor` rejects, we'll have the reason here
++    });
++    ```
++  
++    Simple Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let result;
++  
++    try {
++      result = findResult();
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++    findResult(function(result, err){
++      if (err) {
++        // failure
+       } else {
+-          try {
+-              local = Function('return this')();
+-          } catch (e) {
+-              throw new Error('polyfill failed because global object is unavailable in this environment');
+-          }
++        // success
+       }
+-
+-      var P = local.Promise;
+-
+-      if (P && Object.prototype.toString.call(P.resolve()) === '[object Promise]' && !P.cast) {
+-        return;
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findResult().then(function(result){
++      // success
++    }, function(reason){
++      // failure
++    });
++    ```
++  
++    Advanced Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let author, books;
++  
++    try {
++      author = findAuthor();
++      books  = findBooksByAuthor(author);
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++  
++    function foundBooks(books) {
++  
++    }
++  
++    function failure(reason) {
++  
++    }
++  
++    findAuthor(function(author, err){
++      if (err) {
++        failure(err);
++        // failure
++      } else {
++        try {
++          findBoooksByAuthor(author, function(books, err) {
++            if (err) {
++              failure(err);
++            } else {
++              try {
++                foundBooks(books);
++              } catch(reason) {
++                failure(reason);
++              }
++            }
++          });
++        } catch(error) {
++          failure(err);
++        }
++        // success
+       }
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findAuthor().
++      then(findBooksByAuthor).
++      then(function(books){
++        // found books
++    }).catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method then
++    @param {Function} onFulfilled
++    @param {Function} onRejected
++    Useful for tooling.
++    @return {Promise}
++  */
++  then: then,
+ 
+-      local.Promise = lib$es6$promise$promise$$default;
++  /**
++    `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
++    as the catch block of a try/catch statement.
++  
++    ```js
++    function findAuthor(){
++      throw new Error('couldn't find that author');
+     }
+-    var lib$es6$promise$polyfill$$default = lib$es6$promise$polyfill$$polyfill;
+-
+-    var lib$es6$promise$umd$$ES6Promise = {
+-      'Promise': lib$es6$promise$promise$$default,
+-      'polyfill': lib$es6$promise$polyfill$$default
+-    };
+-
+-    /* global define:true module:true window: true */
+-    if (typeof define === 'function' && define['amd']) {
+-      define(function() { return lib$es6$promise$umd$$ES6Promise; });
+-    } else if (typeof module !== 'undefined' && module['exports']) {
+-      module['exports'] = lib$es6$promise$umd$$ES6Promise;
+-    } else if (typeof this !== 'undefined') {
+-      this['ES6Promise'] = lib$es6$promise$umd$$ES6Promise;
++  
++    // synchronous
++    try {
++      findAuthor();
++    } catch(reason) {
++      // something went wrong
+     }
++  
++    // async with promises
++    findAuthor().catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method catch
++    @param {Function} onRejection
++    Useful for tooling.
++    @return {Promise}
++  */
++  'catch': function _catch(onRejection) {
++    return this.then(null, onRejection);
++  }
++};
+ 
+-    lib$es6$promise$polyfill$$default();
+-}).call(this);
+-
++function polyfill() {
++    var local = undefined;
+ 
+-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"_process":10}],15:[function(require,module,exports){
+-/**
+- * inspired by is-number <https://github.com/jonschlinkert/is-number>
+- * but significantly simplified and sped up by ignoring number and string constructors
+- * ie these return false:
+- *   new Number(1)
+- *   new String('1')
+- */
++    if (typeof global !== 'undefined') {
++        local = global;
++    } else if (typeof self !== 'undefined') {
++        local = self;
++    } else {
++        try {
++            local = Function('return this')();
++        } catch (e) {
++            throw new Error('polyfill failed because global object is unavailable in this environment');
++        }
++    }
+ 
+-'use strict';
++    var P = local.Promise;
+ 
+-/**
+- * Is this string all whitespace?
+- * This solution kind of makes my brain hurt, but it's significantly faster
+- * than !str.trim() or any other solution I could find.
+- *
+- * whitespace codes from: http://en.wikipedia.org/wiki/Whitespace_character
+- * and verified with:
+- *
+- *  for(var i = 0; i < 65536; i++) {
+- *      var s = String.fromCharCode(i);
+- *      if(+s===0 && !s.trim()) console.log(i, s);
+- *  }
+- *
+- * which counts a couple of these as *not* whitespace, but finds nothing else
+- * that *is* whitespace. Note that charCodeAt stops at 16 bits, but it appears
+- * that there are no whitespace characters above this, and code points above
+- * this do not map onto white space characters.
+- */
+-function allBlankCharCodes(str){
+-    var l = str.length,
+-        a;
+-    for(var i = 0; i < l; i++) {
+-        a = str.charCodeAt(i);
+-        if((a < 9 || a > 13) && (a !== 32) && (a !== 133) && (a !== 160) &&
+-            (a !== 5760) && (a !== 6158) && (a < 8192 || a > 8205) &&
+-            (a !== 8232) && (a !== 8233) && (a !== 8239) && (a !== 8287) &&
+-            (a !== 8288) && (a !== 12288) && (a !== 65279)) {
+-                return false;
++    if (P) {
++        var promiseToString = null;
++        try {
++            promiseToString = Object.prototype.toString.call(P.resolve());
++        } catch (e) {
++            // silently ignored
+         }
+-    }
+-    return true;
+-}
+ 
+-module.exports = function(n) {
+-    var type = typeof n;
+-    if(type === 'string') {
+-        var original = n;
+-        n = +n;
+-        // whitespace strings cast to zero - filter them out
+-        if(n===0 && allBlankCharCodes(original)) return false;
++        if (promiseToString === '[object Promise]' && !P.cast) {
++            return;
++        }
+     }
+-    else if(type !== 'number') return false;
+-
+-    return n - n < 1;
+-};
+ 
+-},{}],16:[function(require,module,exports){
+-module.exports = fromQuat;
++    local.Promise = Promise;
++}
+ 
+-/**
+- * Creates a matrix from a quaternion rotation.
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @returns {mat4} out
+- */
+-function fromQuat(out, q) {
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++polyfill();
++// Strange compat..
++Promise.polyfill = polyfill;
++Promise.Promise = Promise;
+ 
+-        xx = x * x2,
+-        yx = y * x2,
+-        yy = y * y2,
+-        zx = z * x2,
+-        zy = z * y2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++return Promise;
+ 
+-    out[0] = 1 - yy - zz;
+-    out[1] = yx + wz;
+-    out[2] = zx - wy;
+-    out[3] = 0;
++})));
+ 
+-    out[4] = yx - wz;
+-    out[5] = 1 - xx - zz;
+-    out[6] = zy + wx;
+-    out[7] = 0;
++}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"_process":175}],10:[function(require,module,exports){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-    out[8] = zx + wy;
+-    out[9] = zy - wx;
+-    out[10] = 1 - xx - yy;
+-    out[11] = 0;
++function EventEmitter() {
++  this._events = this._events || {};
++  this._maxListeners = this._maxListeners || undefined;
++}
++module.exports = EventEmitter;
+ 
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
++// Backwards-compat with node 0.10.x
++EventEmitter.EventEmitter = EventEmitter;
+ 
+-    return out;
++EventEmitter.prototype._events = undefined;
++EventEmitter.prototype._maxListeners = undefined;
++
++// By default EventEmitters will print a warning if more than 10 listeners are
++// added to it. This is a useful default which helps finding memory leaks.
++EventEmitter.defaultMaxListeners = 10;
++
++// Obviously not all Emitters should be limited to 10. This function allows
++// that to be increased. Set to zero for unlimited.
++EventEmitter.prototype.setMaxListeners = function(n) {
++  if (!isNumber(n) || n < 0 || isNaN(n))
++    throw TypeError('n must be a positive number');
++  this._maxListeners = n;
++  return this;
+ };
+-},{}],17:[function(require,module,exports){
+-'use strict';
+ 
+-var featureFilter = require('feature-filter');
+-var Buffer = require('./buffer');
+-var util = require('../util/util');
+-var StructArrayType = require('../util/struct_array');
+-var VertexArrayObject = require('../render/vertex_array_object');
++EventEmitter.prototype.emit = function(type) {
++  var er, handler, len, args, i, listeners;
+ 
+-module.exports = Bucket;
++  if (!this._events)
++    this._events = {};
+ 
+-/**
+- * Instantiate the appropriate subclass of `Bucket` for `options`.
+- * @private
+- * @param options See `Bucket` constructor options
+- * @returns {Bucket}
+- */
+-Bucket.create = function(options) {
+-    var Classes = {
+-        fill: require('./bucket/fill_bucket'),
+-        line: require('./bucket/line_bucket'),
+-        circle: require('./bucket/circle_bucket'),
+-        symbol: require('./bucket/symbol_bucket')
+-    };
+-    return new Classes[options.layer.type](options);
+-};
++  // If there is no 'error' event listener then throw.
++  if (type === 'error') {
++    if (!this._events.error ||
++        (isObject(this._events.error) && !this._events.error.length)) {
++      er = arguments[1];
++      if (er instanceof Error) {
++        throw er; // Unhandled 'error' event
++      } else {
++        // At least give some kind of context to the user
++        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
++        err.context = er;
++        throw err;
++      }
++    }
++  }
+ 
++  handler = this._events[type];
+ 
+-/**
+- * The maximum extent of a feature that can be safely stored in the buffer.
+- * In practice, all features are converted to this extent before being added.
+- *
+- * Positions are stored as signed 16bit integers.
+- * One bit is lost for signedness to support featuers extending past the left edge of the tile.
+- * One bit is lost because the line vertex buffer packs 1 bit of other data into the int.
+- * One bit is lost to support features extending past the extent on the right edge of the tile.
+- * This leaves us with 2^13 = 8192
+- *
+- * @private
+- * @readonly
+- */
+-Bucket.EXTENT = 8192;
++  if (isUndefined(handler))
++    return false;
+ 
+-/**
+- * The `Bucket` class is the single point of knowledge about turning vector
+- * tiles into WebGL buffers.
+- *
+- * `Bucket` is an abstract class. A subclass exists for each Mapbox GL
+- * style spec layer type. Because `Bucket` is an abstract class,
+- * instances should be created via the `Bucket.create` method.
+- *
+- * @class Bucket
+- * @private
+- * @param options
+- * @param {number} options.zoom Zoom level of the buffers being built. May be
+- *     a fractional zoom level.
+- * @param options.layer A Mapbox GL style layer object
+- * @param {Object.<string, Buffer>} options.buffers The set of `Buffer`s being
+- *     built for this tile. This object facilitates sharing of `Buffer`s be
+-       between `Bucket`s.
+- */
+-function Bucket(options) {
+-    this.zoom = options.zoom;
+-    this.overscaling = options.overscaling;
+-    this.layer = options.layer;
+-    this.childLayers = options.childLayers;
++  if (isFunction(handler)) {
++    switch (arguments.length) {
++      // fast cases
++      case 1:
++        handler.call(this);
++        break;
++      case 2:
++        handler.call(this, arguments[1]);
++        break;
++      case 3:
++        handler.call(this, arguments[1], arguments[2]);
++        break;
++      // slower
++      default:
++        args = Array.prototype.slice.call(arguments, 1);
++        handler.apply(this, args);
++    }
++  } else if (isObject(handler)) {
++    args = Array.prototype.slice.call(arguments, 1);
++    listeners = handler.slice();
++    len = listeners.length;
++    for (i = 0; i < len; i++)
++      listeners[i].apply(this, args);
++  }
+ 
+-    this.type = this.layer.type;
+-    this.features = [];
+-    this.id = this.layer.id;
+-    this.index = options.index;
+-    this.sourceLayer = this.layer.sourceLayer;
+-    this.sourceLayerIndex = options.sourceLayerIndex;
+-    this.minZoom = this.layer.minzoom;
+-    this.maxZoom = this.layer.maxzoom;
++  return true;
++};
+ 
+-    this.paintAttributes = createPaintAttributes(this);
++EventEmitter.prototype.addListener = function(type, listener) {
++  var m;
+ 
+-    if (options.arrays) {
+-        var childLayers = this.childLayers;
+-        this.bufferGroups = util.mapObject(options.arrays, function(programArrayGroups, programName) {
+-            return programArrayGroups.map(function(programArrayGroup) {
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-                var group = util.mapObject(programArrayGroup, function(arrays, layoutOrPaint) {
+-                    return util.mapObject(arrays, function(array, name) {
+-                        var arrayType = options.arrayTypes[programName][layoutOrPaint][name];
+-                        var type = (arrayType.members.length && arrayType.members[0].name === 'vertices' ? Buffer.BufferType.ELEMENT : Buffer.BufferType.VERTEX);
+-                        return new Buffer(array, arrayType, type);
+-                    });
+-                });
++  if (!this._events)
++    this._events = {};
+ 
+-                group.vaos = {};
+-                if (group.layout.element2) group.secondVaos = {};
+-                for (var l = 0; l < childLayers.length; l++) {
+-                    var layerName = childLayers[l].id;
+-                    group.vaos[layerName] = new VertexArrayObject();
+-                    if (group.layout.element2) group.secondVaos[layerName] = new VertexArrayObject();
+-                }
++  // To avoid recursion in the case that type === "newListener"! Before
++  // adding it to the listeners, first emit "newListener".
++  if (this._events.newListener)
++    this.emit('newListener', type,
++              isFunction(listener.listener) ?
++              listener.listener : listener);
+ 
+-                return group;
+-            });
+-        });
+-    }
+-}
++  if (!this._events[type])
++    // Optimize the case of one listener. Don't need the extra array object.
++    this._events[type] = listener;
++  else if (isObject(this._events[type]))
++    // If we've already got an array, just append.
++    this._events[type].push(listener);
++  else
++    // Adding the second element, need to change to array.
++    this._events[type] = [this._events[type], listener];
+ 
+-/**
+- * Build the buffers! Features are set directly to the `features` property.
+- * @private
+- */
+-Bucket.prototype.populateBuffers = function() {
+-    this.createArrays();
+-    this.recalculateStyleLayers();
++  // Check for listener leak
++  if (isObject(this._events[type]) && !this._events[type].warned) {
++    if (!isUndefined(this._maxListeners)) {
++      m = this._maxListeners;
++    } else {
++      m = EventEmitter.defaultMaxListeners;
++    }
+ 
+-    for (var i = 0; i < this.features.length; i++) {
+-        this.addFeature(this.features[i]);
++    if (m && m > 0 && this._events[type].length > m) {
++      this._events[type].warned = true;
++      console.error('(node) warning: possible EventEmitter memory ' +
++                    'leak detected. %d listeners added. ' +
++                    'Use emitter.setMaxListeners() to increase limit.',
++                    this._events[type].length);
++      if (typeof console.trace === 'function') {
++        // not supported in IE 10
++        console.trace();
++      }
+     }
++  }
+ 
+-    this.trimArrays();
++  return this;
+ };
+ 
+-/**
+- * Check if there is enough space available in the current element group for
+- * `vertexLength` vertices. If not, append a new elementGroup. Should be called
+- * by `populateBuffers` and its callees.
+- * @private
+- * @param {string} programName the name of the program associated with the buffer that will receive the vertices
+- * @param {number} vertexLength The number of vertices that will be inserted to the buffer.
+- */
+-Bucket.prototype.makeRoomFor = function(programName, numVertices) {
+-    var groups = this.arrayGroups[programName];
+-    var currentGroup = groups.length && groups[groups.length - 1];
+-
+-    if (!currentGroup || currentGroup.layout.vertex.length + numVertices > 65535) {
+-
+-        var arrayTypes = this.arrayTypes[programName];
+-        var VertexArrayType = arrayTypes.layout.vertex;
+-        var ElementArrayType = arrayTypes.layout.element;
+-        var ElementArrayType2 = arrayTypes.layout.element2;
++EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+ 
+-        currentGroup = {
+-            index: groups.length,
+-            layout: {},
+-            paint: {}
+-        };
++EventEmitter.prototype.once = function(type, listener) {
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-        currentGroup.layout.vertex = new VertexArrayType();
+-        if (ElementArrayType) currentGroup.layout.element = new ElementArrayType();
+-        if (ElementArrayType2) currentGroup.layout.element2 = new ElementArrayType2();
++  var fired = false;
+ 
+-        for (var i = 0; i < this.childLayers.length; i++) {
+-            var layerName = this.childLayers[i].id;
+-            var PaintVertexArrayType = arrayTypes.paint[layerName];
+-            currentGroup.paint[layerName] = new PaintVertexArrayType();
+-        }
++  function g() {
++    this.removeListener(type, g);
+ 
+-        groups.push(currentGroup);
++    if (!fired) {
++      fired = true;
++      listener.apply(this, arguments);
+     }
++  }
+ 
+-    return currentGroup;
++  g.listener = listener;
++  this.on(type, g);
++
++  return this;
+ };
+ 
+-/**
+- * Start using a new shared `buffers` object and recreate instances of `Buffer`
+- * as necessary.
+- * @private
+- */
+-Bucket.prototype.createArrays = function() {
+-    this.arrayGroups = {};
+-    this.arrayTypes = {};
++// emits a 'removeListener' event iff the listener was removed
++EventEmitter.prototype.removeListener = function(type, listener) {
++  var list, position, length, i;
+ 
+-    for (var programName in this.programInterfaces) {
+-        var programInterface = this.programInterfaces[programName];
+-        var programArrayTypes = this.arrayTypes[programName] = { layout: {}, paint: {} };
+-        this.arrayGroups[programName] = [];
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-        if (programInterface.vertexBuffer) {
+-            var VertexArrayType = new StructArrayType({
+-                members: this.programInterfaces[programName].layoutAttributes,
+-                alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
+-            });
++  if (!this._events || !this._events[type])
++    return this;
+ 
+-            programArrayTypes.layout.vertex = VertexArrayType;
++  list = this._events[type];
++  length = list.length;
++  position = -1;
+ 
+-            var layerPaintAttributes = this.paintAttributes[programName];
+-            for (var layerName in layerPaintAttributes) {
+-                var PaintVertexArrayType = new StructArrayType({
+-                    members: layerPaintAttributes[layerName].attributes,
+-                    alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
+-                });
++  if (list === listener ||
++      (isFunction(list.listener) && list.listener === listener)) {
++    delete this._events[type];
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
+ 
+-                programArrayTypes.paint[layerName] = PaintVertexArrayType;
+-            }
+-        }
++  } else if (isObject(list)) {
++    for (i = length; i-- > 0;) {
++      if (list[i] === listener ||
++          (list[i].listener && list[i].listener === listener)) {
++        position = i;
++        break;
++      }
++    }
+ 
+-        if (programInterface.elementBuffer) {
+-            var ElementArrayType = createElementBufferType(programInterface.elementBufferComponents);
+-            programArrayTypes.layout.element = ElementArrayType;
+-        }
++    if (position < 0)
++      return this;
+ 
+-        if (programInterface.elementBuffer2) {
+-            var ElementArrayType2 = createElementBufferType(programInterface.elementBuffer2Components);
+-            programArrayTypes.layout.element2 = ElementArrayType2;
+-        }
++    if (list.length === 1) {
++      list.length = 0;
++      delete this._events[type];
++    } else {
++      list.splice(position, 1);
+     }
+-};
+ 
+-Bucket.prototype.destroy = function(gl) {
+-    for (var programName in this.bufferGroups) {
+-        var programBufferGroups = this.bufferGroups[programName];
+-        for (var i = 0; i < programBufferGroups.length; i++) {
+-            var programBuffers = programBufferGroups[i];
+-            for (var paintBuffer in programBuffers.paint) {
+-                programBuffers.paint[paintBuffer].destroy(gl);
+-            }
+-            for (var layoutBuffer in programBuffers.layout) {
+-                programBuffers.layout[layoutBuffer].destroy(gl);
+-            }
+-            for (var j in programBuffers.vaos) {
+-                programBuffers.vaos[j].destroy(gl);
+-            }
+-            for (var k in programBuffers.secondVaos) {
+-                programBuffers.secondVaos[k].destroy(gl);
+-            }
+-        }
+-    }
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
++  }
+ 
++  return this;
+ };
+ 
+-Bucket.prototype.trimArrays = function() {
+-    for (var programName in this.arrayGroups) {
+-        var programArrays = this.arrayGroups[programName];
+-        for (var paintArray in programArrays.paint) {
+-            programArrays.paint[paintArray].trim();
+-        }
+-        for (var layoutArray in programArrays.layout) {
+-            programArrays.layout[layoutArray].trim();
+-        }
+-    }
+-};
++EventEmitter.prototype.removeAllListeners = function(type) {
++  var key, listeners;
+ 
+-Bucket.prototype.setUniforms = function(gl, programName, program, layer, globalProperties) {
+-    var uniforms = this.paintAttributes[programName][layer.id].uniforms;
+-    for (var i = 0; i < uniforms.length; i++) {
+-        var uniform = uniforms[i];
+-        var uniformLocation = program[uniform.name];
+-        gl['uniform' + uniform.components + 'fv'](uniformLocation, uniform.getValue(layer, globalProperties));
++  if (!this._events)
++    return this;
++
++  // not listening for removeListener, no need to emit
++  if (!this._events.removeListener) {
++    if (arguments.length === 0)
++      this._events = {};
++    else if (this._events[type])
++      delete this._events[type];
++    return this;
++  }
++
++  // emit removeListener for all listeners on all events
++  if (arguments.length === 0) {
++    for (key in this._events) {
++      if (key === 'removeListener') continue;
++      this.removeAllListeners(key);
+     }
+-};
++    this.removeAllListeners('removeListener');
++    this._events = {};
++    return this;
++  }
+ 
+-Bucket.prototype.serialize = function() {
+-    return {
+-        layerId: this.layer.id,
+-        zoom: this.zoom,
+-        arrays: util.mapObject(this.arrayGroups, function(programArrayGroups) {
+-            return programArrayGroups.map(function(arrayGroup) {
+-                return util.mapObject(arrayGroup, function(arrays) {
+-                    return util.mapObject(arrays, function(array) {
+-                        return array.serialize();
+-                    });
+-                });
+-            });
+-        }),
+-        arrayTypes: util.mapObject(this.arrayTypes, function(programArrayTypes) {
+-            return util.mapObject(programArrayTypes, function(arrayTypes) {
+-                return util.mapObject(arrayTypes, function(arrayType) {
+-                    return arrayType.serialize();
+-                });
+-            });
+-        }),
++  listeners = this._events[type];
+ 
+-        childLayerIds: this.childLayers.map(function(layer) {
+-            return layer.id;
+-        })
+-    };
+-};
++  if (isFunction(listeners)) {
++    this.removeListener(type, listeners);
++  } else if (listeners) {
++    // LIFO order
++    while (listeners.length)
++      this.removeListener(type, listeners[listeners.length - 1]);
++  }
++  delete this._events[type];
+ 
+-Bucket.prototype.createFilter = function() {
+-    if (!this.filter) {
+-        this.filter = featureFilter(this.layer.filter);
+-    }
++  return this;
+ };
+ 
+-var FAKE_ZOOM_HISTORY = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
+-Bucket.prototype.recalculateStyleLayers = function() {
+-    for (var i = 0; i < this.childLayers.length; i++) {
+-        this.childLayers[i].recalculate(this.zoom, FAKE_ZOOM_HISTORY);
+-    }
++EventEmitter.prototype.listeners = function(type) {
++  var ret;
++  if (!this._events || !this._events[type])
++    ret = [];
++  else if (isFunction(this._events[type]))
++    ret = [this._events[type]];
++  else
++    ret = this._events[type].slice();
++  return ret;
+ };
+ 
+-Bucket.prototype.getProgramMacros = function(programInterface, layer) {
+-    var macros = [];
+-    var attributes = this.paintAttributes[programInterface][layer.id].attributes;
+-    for (var i = 0; i < attributes.length; i++) {
+-        var attribute = attributes[i];
+-        macros.push('ATTRIBUTE_' + (attribute.isFunction ? 'ZOOM_FUNCTION_' : '') + attribute.name.toUpperCase());
+-    }
+-    return macros;
++EventEmitter.prototype.listenerCount = function(type) {
++  if (this._events) {
++    var evlistener = this._events[type];
++
++    if (isFunction(evlistener))
++      return 1;
++    else if (evlistener)
++      return evlistener.length;
++  }
++  return 0;
+ };
+ 
+-Bucket.prototype.addPaintAttributes = function(interfaceName, globalProperties, featureProperties, startGroup, startIndex) {
+-    for (var l = 0; l < this.childLayers.length; l++) {
+-        var layer = this.childLayers[l];
+-        var groups = this.arrayGroups[interfaceName];
+-        for (var g = startGroup.index; g < groups.length; g++) {
+-            var group = groups[g];
+-            var length = group.layout.vertex.length;
+-            var vertexArray = group.paint[layer.id];
+-            vertexArray.resize(length);
++EventEmitter.listenerCount = function(emitter, type) {
++  return emitter.listenerCount(type);
++};
+ 
+-            var attributes = this.paintAttributes[interfaceName][layer.id].attributes;
+-            for (var m = 0; m < attributes.length; m++) {
+-                var attribute = attributes[m];
++function isFunction(arg) {
++  return typeof arg === 'function';
++}
+ 
+-                var value = attribute.getValue(layer, globalProperties, featureProperties);
+-                var multiplier = attribute.multiplier || 1;
+-                var components = attribute.components || 1;
++function isNumber(arg) {
++  return typeof arg === 'number';
++}
+ 
+-                for (var i = startIndex; i < length; i++) {
+-                    var vertex = vertexArray.get(i);
+-                    for (var c = 0; c < components; c++) {
+-                        var memberName = components > 1 ? (attribute.name + c) : attribute.name;
+-                        vertex[memberName] = value[c] * multiplier;
+-                    }
+-                }
+-            }
+-        }
+-    }
+-};
+-
+-function createElementBufferType(components) {
+-    return new StructArrayType({
+-        members: [{
+-            type: Buffer.ELEMENT_ATTRIBUTE_TYPE,
+-            name: 'vertices',
+-            components: components || 3
+-        }]
+-    });
++function isObject(arg) {
++  return typeof arg === 'object' && arg !== null;
+ }
+ 
+-function createPaintAttributes(bucket) {
+-    var attributes = {};
+-    for (var interfaceName in bucket.programInterfaces) {
+-        var layerPaintAttributes = attributes[interfaceName] = {};
+-
+-        for (var c = 0; c < bucket.childLayers.length; c++) {
+-            var childLayer = bucket.childLayers[c];
+-            layerPaintAttributes[childLayer.id] = { attributes: [], uniforms: [] };
+-        }
+-
+-        var interface_ = bucket.programInterfaces[interfaceName];
+-        if (!interface_.paintAttributes) continue;
+-        for (var i = 0; i < interface_.paintAttributes.length; i++) {
+-            var attribute = interface_.paintAttributes[i];
+-
+-            for (var j = 0; j < bucket.childLayers.length; j++) {
+-                var layer = bucket.childLayers[j];
+-                var paintAttributes = layerPaintAttributes[layer.id];
+-
+-                if (layer.isPaintValueFeatureConstant(attribute.paintProperty)) {
+-                    paintAttributes.uniforms.push(attribute);
+-                } else if (layer.isPaintValueZoomConstant(attribute.paintProperty)) {
+-                    paintAttributes.attributes.push(attribute);
+-                } else {
+-
+-                    var zoomLevels = layer.getPaintValueStopZoomLevels(attribute.paintProperty);
+-
+-                    // Pick the index of the first offset to add to the buffers.
+-                    // Find the four closest stops, ideally with two on each side of the zoom level.
+-                    var numStops = 0;
+-                    while (numStops < zoomLevels.length && zoomLevels[numStops] < bucket.zoom) numStops++;
+-                    var stopOffset = Math.max(0, Math.min(zoomLevels.length - 4, numStops - 2));
++function isUndefined(arg) {
++  return arg === void 0;
++}
+ 
+-                    var fourZoomLevels = [];
+-                    for (var s = 0; s < 4; s++) {
+-                        fourZoomLevels.push(zoomLevels[Math.min(stopOffset + s, zoomLevels.length - 1)]);
+-                    }
++},{}],11:[function(require,module,exports){
++/**
++ * inspired by is-number <https://github.com/jonschlinkert/is-number>
++ * but significantly simplified and sped up by ignoring number and string constructors
++ * ie these return false:
++ *   new Number(1)
++ *   new String('1')
++ */
+ 
+-                    var components = attribute.components;
+-                    if (components === 1) {
+-                        paintAttributes.attributes.push(util.extend({}, attribute, {
+-                            getValue: createFunctionGetValue(attribute, fourZoomLevels),
+-                            isFunction: true,
+-                            components: components * 4
+-                        }));
+-                    } else {
+-                        for (var k = 0; k < 4; k++) {
+-                            paintAttributes.attributes.push(util.extend({}, attribute, {
+-                                getValue: createFunctionGetValue(attribute, [fourZoomLevels[k]]),
+-                                isFunction: true,
+-                                name: attribute.name + k
+-                            }));
+-                        }
+-                    }
++'use strict';
+ 
+-                    paintAttributes.uniforms.push(util.extend({}, attribute, {
+-                        name: 'u_' + attribute.name.slice(2) + '_t',
+-                        getValue: createGetUniform(attribute, stopOffset),
+-                        components: 1
+-                    }));
+-                }
+-            }
++/**
++ * Is this string all whitespace?
++ * This solution kind of makes my brain hurt, but it's significantly faster
++ * than !str.trim() or any other solution I could find.
++ *
++ * whitespace codes from: http://en.wikipedia.org/wiki/Whitespace_character
++ * and verified with:
++ *
++ *  for(var i = 0; i < 65536; i++) {
++ *      var s = String.fromCharCode(i);
++ *      if(+s===0 && !s.trim()) console.log(i, s);
++ *  }
++ *
++ * which counts a couple of these as *not* whitespace, but finds nothing else
++ * that *is* whitespace. Note that charCodeAt stops at 16 bits, but it appears
++ * that there are no whitespace characters above this, and code points above
++ * this do not map onto white space characters.
++ */
++function allBlankCharCodes(str){
++    var l = str.length,
++        a;
++    for(var i = 0; i < l; i++) {
++        a = str.charCodeAt(i);
++        if((a < 9 || a > 13) && (a !== 32) && (a !== 133) && (a !== 160) &&
++            (a !== 5760) && (a !== 6158) && (a < 8192 || a > 8205) &&
++            (a !== 8232) && (a !== 8233) && (a !== 8239) && (a !== 8287) &&
++            (a !== 8288) && (a !== 12288) && (a !== 65279)) {
++                return false;
+         }
+     }
+-    return attributes;
++    return true;
+ }
+ 
+-function createFunctionGetValue(attribute, stopZoomLevels) {
+-    return function(layer, globalProperties, featureProperties) {
+-        if (stopZoomLevels.length === 1) {
+-            // return one multi-component value like color0
+-            return attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevels[0] }), featureProperties);
+-        } else {
+-            // pack multiple single-component values into a four component attribute
+-            var values = [];
+-            for (var z = 0; z < stopZoomLevels.length; z++) {
+-                var stopZoomLevel = stopZoomLevels[z];
+-                values.push(attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevel }), featureProperties)[0]);
+-            }
+-            return values;
+-        }
+-    };
+-}
++module.exports = function(n) {
++    var type = typeof n;
++    if(type === 'string') {
++        var original = n;
++        n = +n;
++        // whitespace strings cast to zero - filter them out
++        if(n===0 && allBlankCharCodes(original)) return false;
++    }
++    else if(type !== 'number') return false;
+ 
+-function createGetUniform(attribute, stopOffset) {
+-    return function(layer, globalProperties) {
+-        // stopInterp indicates which stops need to be interpolated.
+-        // If stopInterp is 3.5 then interpolate half way between stops 3 and 4.
+-        var stopInterp = layer.getPaintInterpolationT(attribute.paintProperty, globalProperties.zoom);
+-        // We can only store four stop values in the buffers. stopOffset is the number of stops that come
+-        // before the stops that were added to the buffers.
+-        return [Math.max(0, Math.min(4, stopInterp - stopOffset))];
+-    };
+-}
++    return n - n < 1;
++};
+ 
+-},{"../render/vertex_array_object":43,"../util/struct_array":117,"../util/util":119,"./bucket/circle_bucket":18,"./bucket/fill_bucket":19,"./bucket/line_bucket":20,"./bucket/symbol_bucket":21,"./buffer":22,"feature-filter":122}],18:[function(require,module,exports){
++},{}],12:[function(require,module,exports){
+ 'use strict';
+ 
+-var Bucket = require('../bucket');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
+-var EXTENT = Bucket.EXTENT;
++module.exports = createFilter;
+ 
+-module.exports = CircleBucket;
++var types = ['Unknown', 'Point', 'LineString', 'Polygon'];
+ 
+ /**
+- * Circles are represented by two triangles.
++ * Given a filter expressed as nested arrays, return a new function
++ * that evaluates whether a given feature (with a .properties or .tags property)
++ * passes its test.
+  *
+- * Each corner has a pos that is the center of the circle and an extrusion
+- * vector that is where it points.
+- * @private
++ * @param {Array} filter mapbox gl filter
++ * @returns {Function} filter-evaluating function
+  */
+-function CircleBucket() {
+-    Bucket.apply(this, arguments);
++function createFilter(filter) {
++    return new Function('f', 'var p = (f && f.properties || {}); return ' + compile(filter));
+ }
+ 
+-CircleBucket.prototype = util.inherit(Bucket, {});
++function compile(filter) {
++    if (!filter) return 'true';
++    var op = filter[0];
++    if (filter.length <= 1) return op === 'any' ? 'false' : 'true';
++    var str =
++        op === '==' ? compileComparisonOp(filter[1], filter[2], '===', false) :
++        op === '!=' ? compileComparisonOp(filter[1], filter[2], '!==', false) :
++        op === '<' ||
++        op === '>' ||
++        op === '<=' ||
++        op === '>=' ? compileComparisonOp(filter[1], filter[2], op, true) :
++        op === 'any' ? compileLogicalOp(filter.slice(1), '||') :
++        op === 'all' ? compileLogicalOp(filter.slice(1), '&&') :
++        op === 'none' ? compileNegation(compileLogicalOp(filter.slice(1), '||')) :
++        op === 'in' ? compileInOp(filter[1], filter.slice(2)) :
++        op === '!in' ? compileNegation(compileInOp(filter[1], filter.slice(2))) :
++        op === 'has' ? compileHasOp(filter[1]) :
++        op === '!has' ? compileNegation(compileHasOp([filter[1]])) :
++        'true';
++    return '(' + str + ')';
++}
+ 
+-CircleBucket.prototype.addCircleVertex = function(vertexArray, x, y, extrudeX, extrudeY) {
+-    return vertexArray.emplaceBack(
+-            (x * 2) + ((extrudeX + 1) / 2),
+-            (y * 2) + ((extrudeY + 1) / 2));
+-};
++function compilePropertyReference(property) {
++    return property === '$type' ? 'f.type' :
++        property === '$id' ? 'f.id' :
++        'p[' + JSON.stringify(property) + ']';
++}
+ 
+-CircleBucket.prototype.programInterfaces = {
+-    circle: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
++function compileComparisonOp(property, value, op, checkType) {
++    var left = compilePropertyReference(property);
++    var right = property === '$type' ? types.indexOf(value) : JSON.stringify(value);
++    return (checkType ? 'typeof ' + left + '=== typeof ' + right + '&&' : '') + left + op + right;
++}
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }],
+-        paintAttributes: [{
+-            name: 'a_color',
+-            components: 4,
+-            type: 'Uint8',
+-            getValue: function(layer, globalProperties, featureProperties) {
+-                return util.premultiply(layer.getPaintValue("circle-color", globalProperties, featureProperties));
+-            },
+-            multiplier: 255,
+-            paintProperty: 'circle-color'
+-        }, {
+-            name: 'a_radius',
+-            components: 1,
+-            type: 'Uint16',
+-            isLayerConstant: false,
+-            getValue: function(layer, globalProperties, featureProperties) {
+-                return [layer.getPaintValue("circle-radius", globalProperties, featureProperties)];
+-            },
+-            multiplier: 10,
+-            paintProperty: 'circle-radius'
+-        }]
+-    }
+-};
++function compileLogicalOp(expressions, op) {
++    return expressions.map(compile).join(op);
++}
+ 
+-CircleBucket.prototype.addFeature = function(feature) {
+-    var globalProperties = {zoom: this.zoom};
+-    var geometries = loadGeometry(feature);
++function compileInOp(property, values) {
++    if (property === '$type') values = values.map(function(value) { return types.indexOf(value); });
++    var left = JSON.stringify(values.sort(compare));
++    var right = compilePropertyReference(property);
+ 
+-    var startGroup = this.makeRoomFor('circle', 0);
+-    var startIndex = startGroup.layout.vertex.length;
++    if (values.length <= 200) return left + '.indexOf(' + right + ') !== -1';
+ 
+-    for (var j = 0; j < geometries.length; j++) {
+-        for (var k = 0; k < geometries[j].length; k++) {
++    return 'function(v, a, i, j) {' +
++        'while (i <= j) { var m = (i + j) >> 1;' +
++        '    if (a[m] === v) return true; if (a[m] > v) j = m - 1; else i = m + 1;' +
++        '}' +
++    'return false; }(' + right + ', ' + left + ',0,' + (values.length - 1) + ')';
++}
+ 
+-            var x = geometries[j][k].x;
+-            var y = geometries[j][k].y;
++function compileHasOp(property) {
++    return JSON.stringify(property) + ' in p';
++}
+ 
+-            // Do not include points that are outside the tile boundaries.
+-            if (x < 0 || x >= EXTENT || y < 0 || y >= EXTENT) continue;
++function compileNegation(expression) {
++    return '!(' + expression + ')';
++}
+ 
+-            // this geometry will be of the Point type, and we'll derive
+-            // two triangles from it.
+-            //
+-            // ┌─────────┐
+-            // │ 3     2 │
+-            // │         │
+-            // │ 0     1 │
+-            // └─────────┘
++// Comparison function to sort numbers and strings
++function compare(a, b) {
++    return a < b ? -1 : a > b ? 1 : 0;
++}
+ 
+-            var group = this.makeRoomFor('circle', 4);
+-            var vertexArray = group.layout.vertex;
++},{}],13:[function(require,module,exports){
++var wgs84 = require('wgs84');
+ 
+-            var index = this.addCircleVertex(vertexArray, x, y, -1, -1);
+-            this.addCircleVertex(vertexArray, x, y, 1, -1);
+-            this.addCircleVertex(vertexArray, x, y, 1, 1);
+-            this.addCircleVertex(vertexArray, x, y, -1, 1);
++module.exports.geometry = geometry;
++module.exports.ring = ringArea;
+ 
+-            group.layout.element.emplaceBack(index, index + 1, index + 2);
+-            group.layout.element.emplaceBack(index, index + 3, index + 2);
++function geometry(_) {
++    if (_.type === 'Polygon') return polygonArea(_.coordinates);
++    else if (_.type === 'MultiPolygon') {
++        var area = 0;
++        for (var i = 0; i < _.coordinates.length; i++) {
++            area += polygonArea(_.coordinates[i]);
+         }
++        return area;
++    } else {
++        return null;
+     }
+-
+-    this.addPaintAttributes('circle', globalProperties, feature.properties, startGroup, startIndex);
+-};
+-
+-},{"../../util/util":119,"../bucket":17,"../load_geometry":24}],19:[function(require,module,exports){
+-'use strict';
+-
+-var Bucket = require('../bucket');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
+-
+-module.exports = FillBucket;
+-
+-function FillBucket() {
+-    Bucket.apply(this, arguments);
+ }
+ 
+-FillBucket.prototype = util.inherit(Bucket, {});
++function polygonArea(coords) {
++    var area = 0;
++    if (coords && coords.length > 0) {
++        area += Math.abs(ringArea(coords[0]));
++        for (var i = 1; i < coords.length; i++) {
++            area -= Math.abs(ringArea(coords[i]));
++        }
++    }
++    return area;
++}
+ 
+-FillBucket.prototype.programInterfaces = {
+-    fill: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
+-        elementBuffer2: true,
+-        elementBuffer2Components: 2,
++/**
++ * Calculate the approximate area of the polygon were it projected onto
++ *     the earth.  Note that this area will be positive if ring is oriented
++ *     clockwise, otherwise it will be negative.
++ *
++ * Reference:
++ * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
++ *     Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
++ *     Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
++ *
++ * Returns:
++ * {float} The approximate signed geodesic area of the polygon in square
++ *     meters.
++ */
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }]
+-    }
+-};
++function ringArea(coords) {
++    var area = 0;
+ 
+-FillBucket.prototype.addFeature = function(feature) {
+-    var lines = loadGeometry(feature);
+-    for (var i = 0; i < lines.length; i++) {
+-        this.addFill(lines[i]);
+-    }
+-};
++    if (coords.length > 2) {
++        var p1, p2;
++        for (var i = 0; i < coords.length - 1; i++) {
++            p1 = coords[i];
++            p2 = coords[i + 1];
++            area += rad(p2[0] - p1[0]) * (2 + Math.sin(rad(p1[1])) + Math.sin(rad(p2[1])));
++        }
+ 
+-FillBucket.prototype.addFill = function(vertices) {
+-    if (vertices.length < 3) {
+-        //console.warn('a fill must have at least three vertices');
+-        return;
++        area = area * wgs84.RADIUS * wgs84.RADIUS / 2;
+     }
+ 
+-    // Calculate the total number of vertices we're going to produce so that we
+-    // can resize the buffer beforehand, or detect whether the current line
+-    // won't fit into the buffer anymore.
+-    // In order to be able to use the vertex buffer for drawing the antialiased
+-    // outlines, we separate all polygon vertices with a degenerate (out-of-
+-    // viewplane) vertex.
++    return area;
++}
+ 
+-    var len = vertices.length;
++function rad(_) {
++    return _ * Math.PI / 180;
++}
+ 
+-    // Expand this geometry buffer to hold all the required vertices.
+-    var group = this.makeRoomFor('fill', len + 1);
++},{"wgs84":192}],14:[function(require,module,exports){
++var geojsonArea = require('geojson-area');
+ 
+-    // We're generating triangle fans, so we always start with the first coordinate in this polygon.
+-    var firstIndex, prevIndex;
+-    for (var i = 0; i < vertices.length; i++) {
+-        var currentVertex = vertices[i];
++module.exports = rewind;
+ 
+-        var currentIndex = group.layout.vertex.emplaceBack(currentVertex.x, currentVertex.y);
+-        if (i === 0) firstIndex = currentIndex;
++function rewind(gj, outer) {
++    switch ((gj && gj.type) || null) {
++        case 'FeatureCollection':
++            gj.features = gj.features.map(curryOuter(rewind, outer));
++            return gj;
++        case 'Feature':
++            gj.geometry = rewind(gj.geometry, outer);
++            return gj;
++        case 'Polygon':
++        case 'MultiPolygon':
++            return correct(gj, outer);
++        default:
++            return gj;
++    }
++}
+ 
+-        // Only add triangles that have distinct vertices.
+-        if (i >= 2 && (currentVertex.x !== vertices[0].x || currentVertex.y !== vertices[0].y)) {
+-            group.layout.element.emplaceBack(firstIndex, prevIndex, currentIndex);
+-        }
++function curryOuter(a, b) {
++    return function(_) { return a(_, b); };
++}
+ 
+-        if (i >= 1) {
+-            group.layout.element2.emplaceBack(prevIndex, currentIndex);
+-        }
++function correct(_, outer) {
++    if (_.type === 'Polygon') {
++        _.coordinates = correctRings(_.coordinates, outer);
++    } else if (_.type === 'MultiPolygon') {
++        _.coordinates = _.coordinates.map(curryOuter(correctRings, outer));
++    }
++    return _;
++}
+ 
+-        prevIndex = currentIndex;
++function correctRings(_, outer) {
++    outer = !!outer;
++    _[0] = wind(_[0], !outer);
++    for (var i = 1; i < _.length; i++) {
++        _[i] = wind(_[i], outer);
+     }
+-};
++    return _;
++}
++
++function wind(_, dir) {
++    return cw(_) === dir ? _ : _.reverse();
++}
++
++function cw(_) {
++    return geojsonArea.ring(_) >= 0;
++}
+ 
+-},{"../../util/util":119,"../bucket":17,"../load_geometry":24}],20:[function(require,module,exports){
++},{"geojson-area":13}],15:[function(require,module,exports){
+ 'use strict';
+ 
+-var Bucket = require('../bucket');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
+-var EXTENT = Bucket.EXTENT;
++module.exports = clip;
+ 
+-// NOTE ON EXTRUDE SCALE:
+-// scale the extrusion vector so that the normal length is this value.
+-// contains the "texture" normals (-1..1). this is distinct from the extrude
+-// normals for line joins, because the x-value remains 0 for the texture
+-// normal array, while the extrude normal actually moves the vertex to create
+-// the acute/bevelled line join.
+-var EXTRUDE_SCALE = 63;
++var createFeature = require('./feature');
+ 
+-/*
+- * Sharp corners cause dashed lines to tilt because the distance along the line
+- * is the same at both the inner and outer corners. To improve the appearance of
+- * dashed lines we add extra points near sharp corners so that a smaller part
+- * of the line is tilted.
+- *
+- * COS_HALF_SHARP_CORNER controls how sharp a corner has to be for us to add an
+- * extra vertex. The default is 75 degrees.
+- *
+- * The newly created vertices are placed SHARP_CORNER_OFFSET pixels from the corner.
++/* clip features between two axis-parallel lines:
++ *     |        |
++ *  ___|___     |     /
++ * /   |   \____|____/
++ *     |        |
+  */
+-var COS_HALF_SHARP_CORNER = Math.cos(75 / 2 * (Math.PI / 180));
+-var SHARP_CORNER_OFFSET = 15;
+ 
+-// The number of bits that is used to store the line distance in the buffer.
+-var LINE_DISTANCE_BUFFER_BITS = 14;
++function clip(features, scale, k1, k2, axis, intersect, minAll, maxAll) {
+ 
+-// We don't have enough bits for the line distance as we'd like to have, so
+-// use this value to scale the line distance (in tile units) down to a smaller
+-// value. This lets us store longer distances while sacrificing precision.
+-var LINE_DISTANCE_SCALE = 1 / 2;
++    k1 /= scale;
++    k2 /= scale;
+ 
+-// The maximum line distance, in tile units, that fits in the buffer.
+-var MAX_LINE_DISTANCE = Math.pow(2, LINE_DISTANCE_BUFFER_BITS) / LINE_DISTANCE_SCALE;
++    if (minAll >= k1 && maxAll <= k2) return features; // trivial accept
++    else if (minAll > k2 || maxAll < k1) return null; // trivial reject
+ 
++    var clipped = [];
+ 
+-module.exports = LineBucket;
++    for (var i = 0; i < features.length; i++) {
+ 
+-/**
+- * @private
+- */
+-function LineBucket() {
+-    Bucket.apply(this, arguments);
+-}
++        var feature = features[i],
++            geometry = feature.geometry,
++            type = feature.type,
++            min, max;
+ 
+-LineBucket.prototype = util.inherit(Bucket, {});
++        min = feature.min[axis];
++        max = feature.max[axis];
+ 
+-LineBucket.prototype.addLineVertex = function(vertexBuffer, point, extrude, tx, ty, dir, linesofar) {
+-    return vertexBuffer.emplaceBack(
+-            // a_pos
+-            (point.x << 1) | tx,
+-            (point.y << 1) | ty,
+-            // a_data
+-            // add 128 to store an byte in an unsigned byte
+-            Math.round(EXTRUDE_SCALE * extrude.x) + 128,
+-            Math.round(EXTRUDE_SCALE * extrude.y) + 128,
+-            // Encode the -1/0/1 direction value into the first two bits of .z of a_data.
+-            // Combine it with the lower 6 bits of `linesofar` (shifted by 2 bites to make
+-            // room for the direction value). The upper 8 bits of `linesofar` are placed in
+-            // the `w` component. `linesofar` is scaled down by `LINE_DISTANCE_SCALE` so that
+-            // we can store longer distances while sacrificing precision.
+-            ((dir === 0 ? 0 : (dir < 0 ? -1 : 1)) + 1) | (((linesofar * LINE_DISTANCE_SCALE) & 0x3F) << 2),
+-            (linesofar * LINE_DISTANCE_SCALE) >> 6);
+-};
++        if (min >= k1 && max <= k2) { // trivial accept
++            clipped.push(feature);
++            continue;
++        } else if (min > k2 || max < k1) continue; // trivial reject
+ 
+-LineBucket.prototype.programInterfaces = {
+-    line: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
++        var slices = type === 1 ?
++                clipPoints(geometry, k1, k2, axis) :
++                clipGeometry(geometry, k1, k2, axis, intersect, type === 3);
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }, {
+-            name: 'a_data',
+-            components: 4,
+-            type: 'Uint8'
+-        }]
++        if (slices.length) {
++            // if a feature got clipped, it will likely get clipped on the next zoom level as well,
++            // so there's no need to recalculate bboxes
++            clipped.push(createFeature(feature.tags, type, slices, feature.id));
++        }
+     }
+-};
+ 
+-LineBucket.prototype.addFeature = function(feature) {
+-    var lines = loadGeometry(feature);
+-    for (var i = 0; i < lines.length; i++) {
+-        this.addLine(
+-            lines[i],
+-            this.layer.layout['line-join'],
+-            this.layer.layout['line-cap'],
+-            this.layer.layout['line-miter-limit'],
+-            this.layer.layout['line-round-limit']
+-        );
+-    }
+-};
++    return clipped.length ? clipped : null;
++}
+ 
+-LineBucket.prototype.addLine = function(vertices, join, cap, miterLimit, roundLimit) {
++function clipPoints(geometry, k1, k2, axis) {
++    var slice = [];
+ 
+-    var len = vertices.length;
+-    // If the line has duplicate vertices at the end, adjust length to remove them.
+-    while (len > 2 && vertices[len - 1].equals(vertices[len - 2])) {
+-        len--;
+-    }
++    for (var i = 0; i < geometry.length; i++) {
++        var a = geometry[i],
++            ak = a[axis];
+ 
+-    if (vertices.length < 2) {
+-        //console.warn('a line must have at least two vertices');
+-        return;
++        if (ak >= k1 && ak <= k2) slice.push(a);
+     }
++    return slice;
++}
+ 
+-    if (join === 'bevel') miterLimit = 1.05;
+-
+-    var sharpCornerOffset = SHARP_CORNER_OFFSET * (EXTENT / (512 * this.overscaling));
+-
+-    var firstVertex = vertices[0],
+-        lastVertex = vertices[len - 1],
+-        closed = firstVertex.equals(lastVertex);
++function clipGeometry(geometry, k1, k2, axis, intersect, closed) {
+ 
+-    // we could be more precise, but it would only save a negligible amount of space
+-    this.makeRoomFor('line', len * 10);
++    var slices = [];
+ 
+-    if (len === 2 && closed) {
+-        // console.warn('a line may not have coincident points');
+-        return;
+-    }
++    for (var i = 0; i < geometry.length; i++) {
+ 
+-    this.distance = 0;
++        var ak = 0,
++            bk = 0,
++            b = null,
++            points = geometry[i],
++            area = points.area,
++            dist = points.dist,
++            outer = points.outer,
++            len = points.length,
++            a, j, last;
+ 
+-    var beginCap = cap,
+-        endCap = closed ? 'butt' : cap,
+-        startOfLine = true,
+-        currentVertex, prevVertex, nextVertex, prevNormal, nextNormal, offsetA, offsetB;
++        var slice = [];
+ 
+-    // the last three vertices added
+-    this.e1 = this.e2 = this.e3 = -1;
++        for (j = 0; j < len - 1; j++) {
++            a = b || points[j];
++            b = points[j + 1];
++            ak = bk || a[axis];
++            bk = b[axis];
+ 
+-    if (closed) {
+-        currentVertex = vertices[len - 2];
+-        nextNormal = firstVertex.sub(currentVertex)._unit()._perp();
+-    }
++            if (ak < k1) {
+ 
+-    for (var i = 0; i < len; i++) {
++                if ((bk > k2)) { // ---|-----|-->
++                    slice.push(intersect(a, b, k1), intersect(a, b, k2));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
+ 
+-        nextVertex = closed && i === len - 1 ?
+-            vertices[1] : // if the line is closed, we treat the last vertex like the first
+-            vertices[i + 1]; // just the next vertex
++                } else if (bk >= k1) slice.push(intersect(a, b, k1)); // ---|-->  |
+ 
+-        // if two consecutive vertices exist, skip the current one
+-        if (nextVertex && vertices[i].equals(nextVertex)) continue;
++            } else if (ak > k2) {
+ 
+-        if (nextNormal) prevNormal = nextNormal;
+-        if (currentVertex) prevVertex = currentVertex;
++                if ((bk < k1)) { // <--|-----|---
++                    slice.push(intersect(a, b, k2), intersect(a, b, k1));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
+ 
+-        currentVertex = vertices[i];
++                } else if (bk <= k2) slice.push(intersect(a, b, k2)); // |  <--|---
+ 
+-        // Calculate the normal towards the next vertex in this line. In case
+-        // there is no next vertex, pretend that the line is continuing straight,
+-        // meaning that we are just using the previous normal.
+-        nextNormal = nextVertex ? nextVertex.sub(currentVertex)._unit()._perp() : prevNormal;
++            } else {
+ 
+-        // If we still don't have a previous normal, this is the beginning of a
+-        // non-closed line, so we're doing a straight "join".
+-        prevNormal = prevNormal || nextNormal;
++                slice.push(a);
+ 
+-        // Determine the normal of the join extrusion. It is the angle bisector
+-        // of the segments between the previous line and the next line.
+-        var joinNormal = prevNormal.add(nextNormal)._unit();
++                if (bk < k1) { // <--|---  |
++                    slice.push(intersect(a, b, k1));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
+ 
+-        /*  joinNormal     prevNormal
+-         *             ↖      ↑
+-         *                .________. prevVertex
+-         *                |
+-         * nextNormal  ←  |  currentVertex
+-         *                |
+-         *     nextVertex !
+-         *
+-         */
++                } else if (bk > k2) { // |  ---|-->
++                    slice.push(intersect(a, b, k2));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
++                }
++                // | --> |
++            }
++        }
+ 
+-        // Calculate the length of the miter (the ratio of the miter to the width).
+-        // Find the cosine of the angle between the next and join normals
+-        // using dot product. The inverse of that is the miter length.
+-        var cosHalfAngle = joinNormal.x * nextNormal.x + joinNormal.y * nextNormal.y;
+-        var miterLength = 1 / cosHalfAngle;
++        // add the last point
++        a = points[len - 1];
++        ak = a[axis];
++        if (ak >= k1 && ak <= k2) slice.push(a);
+ 
+-        var isSharpCorner = cosHalfAngle < COS_HALF_SHARP_CORNER && prevVertex && nextVertex;
++        // close the polygon if its endpoints are not the same after clipping
+ 
+-        if (isSharpCorner && i > 0) {
+-            var prevSegmentLength = currentVertex.dist(prevVertex);
+-            if (prevSegmentLength > 2 * sharpCornerOffset) {
+-                var newPrevVertex = currentVertex.sub(currentVertex.sub(prevVertex)._mult(sharpCornerOffset / prevSegmentLength)._round());
+-                this.distance += newPrevVertex.dist(prevVertex);
+-                this.addCurrentVertex(newPrevVertex, this.distance, prevNormal.mult(1), 0, 0, false);
+-                prevVertex = newPrevVertex;
+-            }
+-        }
++        last = slice[slice.length - 1];
++        if (closed && last && (slice[0][0] !== last[0] || slice[0][1] !== last[1])) slice.push(slice[0]);
+ 
+-        // The join if a middle vertex, otherwise the cap.
+-        var middleVertex = prevVertex && nextVertex;
+-        var currentJoin = middleVertex ? join : nextVertex ? beginCap : endCap;
++        // add the final slice
++        newSlice(slices, slice, area, dist, outer);
++    }
+ 
+-        if (middleVertex && currentJoin === 'round') {
+-            if (miterLength < roundLimit) {
+-                currentJoin = 'miter';
+-            } else if (miterLength <= 2) {
+-                currentJoin = 'fakeround';
+-            }
+-        }
++    return slices;
++}
+ 
+-        if (currentJoin === 'miter' && miterLength > miterLimit) {
+-            currentJoin = 'bevel';
+-        }
++function newSlice(slices, slice, area, dist, outer) {
++    if (slice.length) {
++        // we don't recalculate the area/length of the unclipped geometry because the case where it goes
++        // below the visibility threshold as a result of clipping is rare, so we avoid doing unnecessary work
++        slice.area = area;
++        slice.dist = dist;
++        if (outer !== undefined) slice.outer = outer;
+ 
+-        if (currentJoin === 'bevel') {
+-            // The maximum extrude length is 128 / 63 = 2 times the width of the line
+-            // so if miterLength >= 2 we need to draw a different type of bevel where.
+-            if (miterLength > 2) currentJoin = 'flipbevel';
++        slices.push(slice);
++    }
++    return [];
++}
+ 
+-            // If the miterLength is really small and the line bevel wouldn't be visible,
+-            // just draw a miter join to save a triangle.
+-            if (miterLength < miterLimit) currentJoin = 'miter';
+-        }
++},{"./feature":17}],16:[function(require,module,exports){
++'use strict';
+ 
+-        // Calculate how far along the line the currentVertex is
+-        if (prevVertex) this.distance += currentVertex.dist(prevVertex);
++module.exports = convert;
+ 
+-        if (currentJoin === 'miter') {
++var simplify = require('./simplify');
++var createFeature = require('./feature');
+ 
+-            joinNormal._mult(miterLength);
+-            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
++// converts GeoJSON feature into an intermediate projected JSON vector format with simplification data
+ 
+-        } else if (currentJoin === 'flipbevel') {
+-            // miter is too big, flip the direction to make a beveled join
++function convert(data, tolerance) {
++    var features = [];
+ 
+-            if (miterLength > 100) {
+-                // Almost parallel lines
+-                joinNormal = nextNormal.clone();
++    if (data.type === 'FeatureCollection') {
++        for (var i = 0; i < data.features.length; i++) {
++            convertFeature(features, data.features[i], tolerance);
++        }
++    } else if (data.type === 'Feature') {
++        convertFeature(features, data, tolerance);
+ 
+-            } else {
+-                var direction = prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x > 0 ? -1 : 1;
+-                var bevelLength = miterLength * prevNormal.add(nextNormal).mag() / prevNormal.sub(nextNormal).mag();
+-                joinNormal._perp()._mult(bevelLength * direction);
+-            }
+-            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
+-            this.addCurrentVertex(currentVertex, this.distance, joinNormal.mult(-1), 0, 0, false);
++    } else {
++        // single geometry or a geometry collection
++        convertFeature(features, {geometry: data}, tolerance);
++    }
++    return features;
++}
+ 
+-        } else if (currentJoin === 'bevel' || currentJoin === 'fakeround') {
+-            var lineTurnsLeft = (prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x) > 0;
+-            var offset = -Math.sqrt(miterLength * miterLength - 1);
+-            if (lineTurnsLeft) {
+-                offsetB = 0;
+-                offsetA = offset;
+-            } else {
+-                offsetA = 0;
+-                offsetB = offset;
+-            }
++function convertFeature(features, feature, tolerance) {
++    if (feature.geometry === null) {
++        // ignore features with null geometry
++        return;
++    }
+ 
+-            // Close previous segment with a bevel
+-            if (!startOfLine) {
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, offsetA, offsetB, false);
+-            }
++    var geom = feature.geometry,
++        type = geom.type,
++        coords = geom.coordinates,
++        tags = feature.properties,
++        id = feature.id,
++        i, j, rings, projectedRing;
+ 
+-            if (currentJoin === 'fakeround') {
+-                // The join angle is sharp enough that a round join would be visible.
+-                // Bevel joins fill the gap between segments with a single pie slice triangle.
+-                // Create a round join by adding multiple pie slices. The join isn't actually round, but
+-                // it looks like it is at the sizes we render lines at.
++    if (type === 'Point') {
++        features.push(createFeature(tags, 1, [projectPoint(coords)], id));
+ 
+-                // Add more triangles for sharper angles.
+-                // This math is just a good enough approximation. It isn't "correct".
+-                var n = Math.floor((0.5 - (cosHalfAngle - 0.5)) * 8);
+-                var approxFractionalJoinNormal;
++    } else if (type === 'MultiPoint') {
++        features.push(createFeature(tags, 1, project(coords), id));
+ 
+-                for (var m = 0; m < n; m++) {
+-                    approxFractionalJoinNormal = nextNormal.mult((m + 1) / (n + 1))._add(prevNormal)._unit();
+-                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
+-                }
++    } else if (type === 'LineString') {
++        features.push(createFeature(tags, 2, [project(coords, tolerance)], id));
+ 
+-                this.addPieSliceVertex(currentVertex, this.distance, joinNormal, lineTurnsLeft);
++    } else if (type === 'MultiLineString' || type === 'Polygon') {
++        rings = [];
++        for (i = 0; i < coords.length; i++) {
++            projectedRing = project(coords[i], tolerance);
++            if (type === 'Polygon') projectedRing.outer = (i === 0);
++            rings.push(projectedRing);
++        }
++        features.push(createFeature(tags, type === 'Polygon' ? 3 : 2, rings, id));
+ 
+-                for (var k = n - 1; k >= 0; k--) {
+-                    approxFractionalJoinNormal = prevNormal.mult((k + 1) / (n + 1))._add(nextNormal)._unit();
+-                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
+-                }
++    } else if (type === 'MultiPolygon') {
++        rings = [];
++        for (i = 0; i < coords.length; i++) {
++            for (j = 0; j < coords[i].length; j++) {
++                projectedRing = project(coords[i][j], tolerance);
++                projectedRing.outer = (j === 0);
++                rings.push(projectedRing);
+             }
++        }
++        features.push(createFeature(tags, 3, rings, id));
+ 
+-            // Start next segment
+-            if (nextVertex) {
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -offsetA, -offsetB, false);
+-            }
++    } else if (type === 'GeometryCollection') {
++        for (i = 0; i < geom.geometries.length; i++) {
++            convertFeature(features, {
++                geometry: geom.geometries[i],
++                properties: tags
++            }, tolerance);
++        }
+ 
+-        } else if (currentJoin === 'butt') {
+-            if (!startOfLine) {
+-                // Close previous segment with a butt
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
+-            }
++    } else {
++        throw new Error('Input data is not a valid GeoJSON object.');
++    }
++}
+ 
+-            // Start next segment with a butt
+-            if (nextVertex) {
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
+-            }
++function project(lonlats, tolerance) {
++    var projected = [];
++    for (var i = 0; i < lonlats.length; i++) {
++        projected.push(projectPoint(lonlats[i]));
++    }
++    if (tolerance) {
++        simplify(projected, tolerance);
++        calcSize(projected);
++    }
++    return projected;
++}
+ 
+-        } else if (currentJoin === 'square') {
++function projectPoint(p) {
++    var sin = Math.sin(p[1] * Math.PI / 180),
++        x = (p[0] / 360 + 0.5),
++        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
+ 
+-            if (!startOfLine) {
+-                // Close previous segment with a square cap
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, false);
++    y = y < 0 ? 0 :
++        y > 1 ? 1 : y;
+ 
+-                // The segment is done. Unset vertices to disconnect segments.
+-                this.e1 = this.e2 = -1;
+-            }
++    return [x, y, 0];
++}
+ 
+-            // Start next segment
+-            if (nextVertex) {
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, false);
+-            }
++// calculate area and length of the poly
++function calcSize(points) {
++    var area = 0,
++        dist = 0;
+ 
+-        } else if (currentJoin === 'round') {
++    for (var i = 0, a, b; i < points.length - 1; i++) {
++        a = b || points[i];
++        b = points[i + 1];
+ 
+-            if (!startOfLine) {
+-                // Close previous segment with butt
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
++        area += a[0] * b[1] - b[0] * a[1];
+ 
+-                // Add round cap or linejoin at end of segment
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, true);
++        // use Manhattan distance instead of Euclidian one to avoid expensive square root computation
++        dist += Math.abs(b[0] - a[0]) + Math.abs(b[1] - a[1]);
++    }
++    points.area = Math.abs(area / 2);
++    points.dist = dist;
++}
+ 
+-                // The segment is done. Unset vertices to disconnect segments.
+-                this.e1 = this.e2 = -1;
+-            }
++},{"./feature":17,"./simplify":19}],17:[function(require,module,exports){
++'use strict';
+ 
++module.exports = createFeature;
+ 
+-            // Start next segment with a butt
+-            if (nextVertex) {
+-                // Add round cap before first segment
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, true);
++function createFeature(tags, type, geom, id) {
++    var feature = {
++        id: id || null,
++        type: type,
++        geometry: geom,
++        tags: tags || null,
++        min: [Infinity, Infinity], // initial bbox values
++        max: [-Infinity, -Infinity]
++    };
++    calcBBox(feature);
++    return feature;
++}
+ 
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
+-            }
+-        }
++// calculate the feature bounding box for faster clipping later
++function calcBBox(feature) {
++    var geometry = feature.geometry,
++        min = feature.min,
++        max = feature.max;
+ 
+-        if (isSharpCorner && i < len - 1) {
+-            var nextSegmentLength = currentVertex.dist(nextVertex);
+-            if (nextSegmentLength > 2 * sharpCornerOffset) {
+-                var newCurrentVertex = currentVertex.add(nextVertex.sub(currentVertex)._mult(sharpCornerOffset / nextSegmentLength)._round());
+-                this.distance += newCurrentVertex.dist(currentVertex);
+-                this.addCurrentVertex(newCurrentVertex, this.distance, nextNormal.mult(1), 0, 0, false);
+-                currentVertex = newCurrentVertex;
+-            }
++    if (feature.type === 1) {
++        calcRingBBox(min, max, geometry);
++    } else {
++        for (var i = 0; i < geometry.length; i++) {
++            calcRingBBox(min, max, geometry[i]);
+         }
+-
+-        startOfLine = false;
+     }
+ 
+-};
+-
+-/**
+- * Add two vertices to the buffers.
+- *
+- * @param {Object} currentVertex the line vertex to add buffer vertices for
+- * @param {number} distance the distance from the beginning of the line to the vertex
+- * @param {number} endLeft extrude to shift the left vertex along the line
+- * @param {number} endRight extrude to shift the left vertex along the line
+- * @param {boolean} round whether this is a round cap
+- * @private
+- */
+-LineBucket.prototype.addCurrentVertex = function(currentVertex, distance, normal, endLeft, endRight, round) {
+-    var tx = round ? 1 : 0;
+-    var extrude;
+-    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
+-    var vertexArray = layoutArrays.vertex;
+-    var elementArray = layoutArrays.element;
++    return feature;
++}
+ 
+-    extrude = normal.clone();
+-    if (endLeft) extrude._sub(normal.perp()._mult(endLeft));
+-    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 0, endLeft, distance);
+-    if (this.e1 >= 0 && this.e2 >= 0) {
+-        elementArray.emplaceBack(this.e1, this.e2, this.e3);
++function calcRingBBox(min, max, points) {
++    for (var i = 0, p; i < points.length; i++) {
++        p = points[i];
++        min[0] = Math.min(p[0], min[0]);
++        max[0] = Math.max(p[0], max[0]);
++        min[1] = Math.min(p[1], min[1]);
++        max[1] = Math.max(p[1], max[1]);
+     }
+-    this.e1 = this.e2;
+-    this.e2 = this.e3;
++}
+ 
+-    extrude = normal.mult(-1);
+-    if (endRight) extrude._sub(normal.perp()._mult(endRight));
+-    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 1, -endRight, distance);
+-    if (this.e1 >= 0 && this.e2 >= 0) {
+-        elementArray.emplaceBack(this.e1, this.e2, this.e3);
+-    }
+-    this.e1 = this.e2;
+-    this.e2 = this.e3;
++},{}],18:[function(require,module,exports){
++'use strict';
+ 
+-    // There is a maximum "distance along the line" that we can store in the buffers.
+-    // When we get close to the distance, reset it to zero and add the vertex again with
+-    // a distance of zero. The max distance is determined by the number of bits we allocate
+-    // to `linesofar`.
+-    if (distance > MAX_LINE_DISTANCE / 2) {
+-        this.distance = 0;
+-        this.addCurrentVertex(currentVertex, this.distance, normal, endLeft, endRight, round);
+-    }
+-};
++module.exports = geojsonvt;
+ 
+-/**
+- * Add a single new vertex and a triangle using two previous vertices.
+- * This adds a pie slice triangle near a join to simulate round joins
+- *
+- * @param {Object} currentVertex the line vertex to add buffer vertices for
+- * @param {number} distance the distance from the beggining of the line to the vertex
+- * @param {Object} extrude the offset of the new vertex from the currentVertex
+- * @param {boolean} whether the line is turning left or right at this angle
+- * @private
+- */
+-LineBucket.prototype.addPieSliceVertex = function(currentVertex, distance, extrude, lineTurnsLeft) {
+-    var ty = lineTurnsLeft ? 1 : 0;
+-    extrude = extrude.mult(lineTurnsLeft ? -1 : 1);
+-    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
+-    var vertexArray = layoutArrays.vertex;
+-    var elementArray = layoutArrays.element;
++var convert = require('./convert'),     // GeoJSON conversion and preprocessing
++    transform = require('./transform'), // coordinate transformation
++    clip = require('./clip'),           // stripe clipping algorithm
++    wrap = require('./wrap'),           // date line processing
++    createTile = require('./tile');     // final simplified tile generation
+ 
+-    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, 0, ty, 0, distance);
+ 
+-    if (this.e1 >= 0 && this.e2 >= 0) {
+-        elementArray.emplaceBack(this.e1, this.e2, this.e3);
+-    }
++function geojsonvt(data, options) {
++    return new GeoJSONVT(data, options);
++}
+ 
+-    if (lineTurnsLeft) {
+-        this.e2 = this.e3;
+-    } else {
+-        this.e1 = this.e3;
+-    }
+-};
++function GeoJSONVT(data, options) {
++    options = this.options = extend(Object.create(this.options), options);
+ 
+-},{"../../util/util":119,"../bucket":17,"../load_geometry":24}],21:[function(require,module,exports){
+-'use strict';
++    var debug = options.debug;
+ 
+-var Point = require('point-geometry');
++    if (debug) console.time('preprocess data');
+ 
+-var Bucket = require('../bucket');
+-var Anchor = require('../../symbol/anchor');
+-var getAnchors = require('../../symbol/get_anchors');
+-var resolveTokens = require('../../util/token');
+-var Quads = require('../../symbol/quads');
+-var Shaping = require('../../symbol/shaping');
+-var resolveText = require('../../symbol/resolve_text');
+-var mergeLines = require('../../symbol/mergelines');
+-var clipLine = require('../../symbol/clip_line');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
+-var CollisionFeature = require('../../symbol/collision_feature');
+-
+-var shapeText = Shaping.shapeText;
+-var shapeIcon = Shaping.shapeIcon;
+-var getGlyphQuads = Quads.getGlyphQuads;
+-var getIconQuads = Quads.getIconQuads;
+-
+-var EXTENT = Bucket.EXTENT;
+-
+-module.exports = SymbolBucket;
+-
+-function SymbolBucket(options) {
+-    Bucket.apply(this, arguments);
+-    this.showCollisionBoxes = options.showCollisionBoxes;
+-    this.overscaling = options.overscaling;
+-    this.collisionBoxArray = options.collisionBoxArray;
++    var z2 = 1 << options.maxZoom, // 2^z
++        features = convert(data, options.tolerance / (z2 * options.extent));
+ 
+-    this.sdfIcons = options.sdfIcons;
+-    this.iconsNeedLinear = options.iconsNeedLinear;
+-    this.adjustedTextSize = options.adjustedTextSize;
+-    this.adjustedIconSize = options.adjustedIconSize;
+-    this.fontstack = options.fontstack;
+-}
++    this.tiles = {};
++    this.tileCoords = [];
+ 
+-SymbolBucket.prototype = util.inherit(Bucket, {});
++    if (debug) {
++        console.timeEnd('preprocess data');
++        console.log('index: maxZoom: %d, maxPoints: %d', options.indexMaxZoom, options.indexMaxPoints);
++        console.time('generate tiles');
++        this.stats = {};
++        this.total = 0;
++    }
+ 
+-SymbolBucket.prototype.serialize = function() {
+-    var serialized = Bucket.prototype.serialize.apply(this);
+-    serialized.sdfIcons = this.sdfIcons;
+-    serialized.iconsNeedLinear = this.iconsNeedLinear;
+-    serialized.adjustedTextSize = this.adjustedTextSize;
+-    serialized.adjustedIconSize = this.adjustedIconSize;
+-    serialized.fontstack = this.fontstack;
+-    return serialized;
+-};
++    features = wrap(features, options.buffer / options.extent, intersectX);
+ 
+-var programAttributes = [{
+-    name: 'a_pos',
+-    components: 2,
+-    type: 'Int16'
+-}, {
+-    name: 'a_offset',
+-    components: 2,
+-    type: 'Int16'
+-}, {
+-    name: 'a_data1',
+-    components: 4,
+-    type: 'Uint8'
+-}, {
+-    name: 'a_data2',
+-    components: 2,
+-    type: 'Uint8'
+-}];
++    // start slicing from the top tile down
++    if (features.length) this.splitTile(features, 0, 0, 0);
+ 
+-function addVertex(array, x, y, ox, oy, tx, ty, minzoom, maxzoom, labelminzoom) {
+-    return array.emplaceBack(
+-            // pos
+-            x,
+-            y,
+-            // offset
+-            Math.round(ox * 64), // use 1/64 pixels for placement
+-            Math.round(oy * 64),
+-            // data1
+-            tx / 4,                   // tex
+-            ty / 4,                   // tex
+-            (labelminzoom || 0) * 10, // labelminzoom
+-            0,
+-            // data2
+-            (minzoom || 0) * 10,               // minzoom
+-            Math.min(maxzoom || 25, 25) * 10); // minzoom
++    if (debug) {
++        if (features.length) console.log('features: %d, points: %d', this.tiles[0].numFeatures, this.tiles[0].numPoints);
++        console.timeEnd('generate tiles');
++        console.log('tiles generated:', this.total, JSON.stringify(this.stats));
++    }
+ }
+ 
+-SymbolBucket.prototype.addCollisionBoxVertex = function(vertexArray, point, extrude, maxZoom, placementZoom) {
+-    return vertexArray.emplaceBack(
+-            // pos
+-            point.x,
+-            point.y,
+-            // extrude
+-            Math.round(extrude.x),
+-            Math.round(extrude.y),
+-            // data
+-            maxZoom * 10,
+-            placementZoom * 10);
++GeoJSONVT.prototype.options = {
++    maxZoom: 14,            // max zoom to preserve detail on
++    indexMaxZoom: 5,        // max zoom in the tile index
++    indexMaxPoints: 100000, // max number of points per tile in the tile index
++    solidChildren: false,   // whether to tile solid square tiles further
++    tolerance: 3,           // simplification tolerance (higher means simpler)
++    extent: 4096,           // tile extent
++    buffer: 64,             // tile buffer on each side
++    debug: 0                // logging level (0, 1 or 2)
+ };
+ 
+-SymbolBucket.prototype.programInterfaces = {
+-
+-    glyph: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
+-        layoutAttributes: programAttributes
+-    },
+-
+-    icon: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
+-        layoutAttributes: programAttributes
+-    },
++GeoJSONVT.prototype.splitTile = function (features, z, x, y, cz, cx, cy) {
+ 
+-    collisionBox: {
+-        vertexBuffer: true,
++    var stack = [features, z, x, y],
++        options = this.options,
++        debug = options.debug,
++        solid = null;
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }, {
+-            name: 'a_extrude',
+-            components: 2,
+-            type: 'Int16'
+-        }, {
+-            name: 'a_data',
+-            components: 2,
+-            type: 'Uint8'
+-        }]
+-    }
+-};
++    // avoid recursion by using a processing queue
++    while (stack.length) {
++        y = stack.pop();
++        x = stack.pop();
++        z = stack.pop();
++        features = stack.pop();
+ 
+-SymbolBucket.prototype.populateBuffers = function(collisionTile, stacks, icons) {
++        var z2 = 1 << z,
++            id = toID(z, x, y),
++            tile = this.tiles[id],
++            tileTolerance = z === options.maxZoom ? 0 : options.tolerance / (z2 * options.extent);
+ 
+-    // To reduce the number of labels that jump around when zooming we need
+-    // to use a text-size value that is the same for all zoom levels.
+-    // This calculates text-size at a high zoom level so that all tiles can
+-    // use the same value when calculating anchor positions.
+-    var zoomHistory = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
+-    this.adjustedTextMaxSize = this.layer.getLayoutValue('text-size', {zoom: 18, zoomHistory: zoomHistory});
+-    this.adjustedTextSize = this.layer.getLayoutValue('text-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
+-    this.adjustedIconMaxSize = this.layer.getLayoutValue('icon-size', {zoom: 18, zoomHistory: zoomHistory});
+-    this.adjustedIconSize = this.layer.getLayoutValue('icon-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
++        if (!tile) {
++            if (debug > 1) console.time('creation');
+ 
+-    var tileSize = 512 * this.overscaling;
+-    this.tilePixelRatio = EXTENT / tileSize;
+-    this.compareText = {};
+-    this.symbolInstances = [];
+-    this.iconsNeedLinear = false;
++            tile = this.tiles[id] = createTile(features, z2, x, y, tileTolerance, z === options.maxZoom);
++            this.tileCoords.push({z: z, x: x, y: y});
+ 
+-    var layout = this.layer.layout;
+-    var features = this.features;
+-    var textFeatures = this.textFeatures;
++            if (debug) {
++                if (debug > 1) {
++                    console.log('tile z%d-%d-%d (features: %d, points: %d, simplified: %d)',
++                        z, x, y, tile.numFeatures, tile.numPoints, tile.numSimplified);
++                    console.timeEnd('creation');
++                }
++                var key = 'z' + z;
++                this.stats[key] = (this.stats[key] || 0) + 1;
++                this.total++;
++            }
++        }
+ 
+-    var horizontalAlign = 0.5,
+-        verticalAlign = 0.5;
++        // save reference to original geometry in tile so that we can drill down later if we stop now
++        tile.source = features;
+ 
+-    switch (layout['text-anchor']) {
+-    case 'right':
+-    case 'top-right':
+-    case 'bottom-right':
+-        horizontalAlign = 1;
+-        break;
+-    case 'left':
+-    case 'top-left':
+-    case 'bottom-left':
+-        horizontalAlign = 0;
+-        break;
+-    }
++        // if it's the first-pass tiling
++        if (!cz) {
++            // stop tiling if we reached max zoom, or if the tile is too simple
++            if (z === options.indexMaxZoom || tile.numPoints <= options.indexMaxPoints) continue;
+ 
+-    switch (layout['text-anchor']) {
+-    case 'bottom':
+-    case 'bottom-right':
+-    case 'bottom-left':
+-        verticalAlign = 1;
+-        break;
+-    case 'top':
+-    case 'top-right':
+-    case 'top-left':
+-        verticalAlign = 0;
+-        break;
+-    }
++        // if a drilldown to a specific tile
++        } else {
++            // stop tiling if we reached base zoom or our target tile zoom
++            if (z === options.maxZoom || z === cz) continue;
+ 
+-    var justify = layout['text-justify'] === 'right' ? 1 :
+-        layout['text-justify'] === 'left' ? 0 :
+-        0.5;
++            // stop tiling if it's not an ancestor of the target tile
++            var m = 1 << (cz - z);
++            if (x !== Math.floor(cx / m) || y !== Math.floor(cy / m)) continue;
++        }
+ 
+-    var oneEm = 24;
+-    var lineHeight = layout['text-line-height'] * oneEm;
+-    var maxWidth = layout['symbol-placement'] !== 'line' ? layout['text-max-width'] * oneEm : 0;
+-    var spacing = layout['text-letter-spacing'] * oneEm;
+-    var textOffset = [layout['text-offset'][0] * oneEm, layout['text-offset'][1] * oneEm];
+-    var fontstack = this.fontstack = layout['text-font'].join(',');
++        // stop tiling if the tile is solid clipped square
++        if (!options.solidChildren && isClippedSquare(tile, options.extent, options.buffer)) {
++            if (cz) solid = z; // and remember the zoom if we're drilling down
++            continue;
++        }
+ 
+-    var geometries = [];
+-    for (var g = 0; g < features.length; g++) {
+-        geometries.push(loadGeometry(features[g]));
+-    }
++        // if we slice further down, no need to keep source geometry
++        tile.source = null;
+ 
+-    if (layout['symbol-placement'] === 'line') {
+-        // Merge adjacent lines with the same text to improve labelling.
+-        // It's better to place labels on one long line than on many short segments.
+-        var merged = mergeLines(features, textFeatures, geometries);
++        if (debug > 1) console.time('clipping');
+ 
+-        geometries = merged.geometries;
+-        features = merged.features;
+-        textFeatures = merged.textFeatures;
+-    }
++        // values we'll use for clipping
++        var k1 = 0.5 * options.buffer / options.extent,
++            k2 = 0.5 - k1,
++            k3 = 0.5 + k1,
++            k4 = 1 + k1,
++            tl, bl, tr, br, left, right;
+ 
+-    var shapedText, shapedIcon;
++        tl = bl = tr = br = null;
+ 
+-    for (var k = 0; k < features.length; k++) {
+-        if (!geometries[k]) continue;
++        left  = clip(features, z2, x - k1, x + k3, 0, intersectX, tile.min[0], tile.max[0]);
++        right = clip(features, z2, x + k2, x + k4, 0, intersectX, tile.min[0], tile.max[0]);
+ 
+-        if (textFeatures[k]) {
+-            shapedText = shapeText(textFeatures[k], stacks[fontstack], maxWidth,
+-                    lineHeight, horizontalAlign, verticalAlign, justify, spacing, textOffset);
+-        } else {
+-            shapedText = null;
++        if (left) {
++            tl = clip(left, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
++            bl = clip(left, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
+         }
+ 
+-        if (layout['icon-image']) {
+-            var iconName = resolveTokens(features[k].properties, layout['icon-image']);
+-            var image = icons[iconName];
+-            shapedIcon = shapeIcon(image, layout);
+-
+-            if (image) {
+-                if (this.sdfIcons === undefined) {
+-                    this.sdfIcons = image.sdf;
+-                } else if (this.sdfIcons !== image.sdf) {
+-                    console.warn('Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer');
+-                }
+-                if (image.pixelRatio !== 1) {
+-                    this.iconsNeedLinear = true;
+-                }
+-            }
+-        } else {
+-            shapedIcon = null;
++        if (right) {
++            tr = clip(right, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
++            br = clip(right, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
+         }
+ 
+-        if (shapedText || shapedIcon) {
+-            this.addFeature(geometries[k], shapedText, shapedIcon, features[k].index);
++        if (debug > 1) console.timeEnd('clipping');
++
++        if (features.length) {
++            stack.push(tl || [], z + 1, x * 2,     y * 2);
++            stack.push(bl || [], z + 1, x * 2,     y * 2 + 1);
++            stack.push(tr || [], z + 1, x * 2 + 1, y * 2);
++            stack.push(br || [], z + 1, x * 2 + 1, y * 2 + 1);
+         }
+     }
+ 
+-    this.placeFeatures(collisionTile, this.showCollisionBoxes);
+-
+-    this.trimArrays();
++    return solid;
+ };
+ 
+-SymbolBucket.prototype.addFeature = function(lines, shapedText, shapedIcon, featureIndex) {
+-    var layout = this.layer.layout;
+-
+-    var glyphSize = 24;
++GeoJSONVT.prototype.getTile = function (z, x, y) {
++    var options = this.options,
++        extent = options.extent,
++        debug = options.debug;
+ 
+-    var fontScale = this.adjustedTextSize / glyphSize,
+-        textMaxSize = this.adjustedTextMaxSize !== undefined ? this.adjustedTextMaxSize : this.adjustedTextSize,
+-        textBoxScale = this.tilePixelRatio * fontScale,
+-        textMaxBoxScale = this.tilePixelRatio * textMaxSize / glyphSize,
+-        iconBoxScale = this.tilePixelRatio * this.adjustedIconSize,
+-        symbolMinDistance = this.tilePixelRatio * layout['symbol-spacing'],
+-        avoidEdges = layout['symbol-avoid-edges'],
+-        textPadding = layout['text-padding'] * this.tilePixelRatio,
+-        iconPadding = layout['icon-padding'] * this.tilePixelRatio,
+-        textMaxAngle = layout['text-max-angle'] / 180 * Math.PI,
+-        textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
+-        iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
+-        mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
+-            layout['text-ignore-placement'] || layout['icon-ignore-placement'],
+-        isLine = layout['symbol-placement'] === 'line',
+-        textRepeatDistance = symbolMinDistance / 2;
++    var z2 = 1 << z;
++    x = ((x % z2) + z2) % z2; // wrap tile x coordinate
+ 
+-    if (isLine) {
+-        lines = clipLine(lines, 0, 0, EXTENT, EXTENT);
+-    }
++    var id = toID(z, x, y);
++    if (this.tiles[id]) return transform.tile(this.tiles[id], extent);
+ 
+-    for (var i = 0; i < lines.length; i++) {
+-        var line = lines[i];
++    if (debug > 1) console.log('drilling down to z%d-%d-%d', z, x, y);
+ 
+-        // Calculate the anchor points around which you want to place labels
+-        var anchors;
+-        if (isLine) {
+-            anchors = getAnchors(
+-                line,
+-                symbolMinDistance,
+-                textMaxAngle,
+-                shapedText,
+-                shapedIcon,
+-                glyphSize,
+-                textMaxBoxScale,
+-                this.overscaling,
+-                EXTENT
+-            );
+-        } else {
+-            anchors = [ new Anchor(line[0].x, line[0].y, 0) ];
+-        }
++    var z0 = z,
++        x0 = x,
++        y0 = y,
++        parent;
+ 
+-        // For each potential label, create the placement features used to check for collisions, and the quads use for rendering.
+-        for (var j = 0, len = anchors.length; j < len; j++) {
+-            var anchor = anchors[j];
++    while (!parent && z0 > 0) {
++        z0--;
++        x0 = Math.floor(x0 / 2);
++        y0 = Math.floor(y0 / 2);
++        parent = this.tiles[toID(z0, x0, y0)];
++    }
+ 
+-            if (shapedText && isLine) {
+-                if (this.anchorIsTooClose(shapedText.text, textRepeatDistance, anchor)) {
+-                    continue;
+-                }
+-            }
++    if (!parent || !parent.source) return null;
+ 
+-            var inside = !(anchor.x < 0 || anchor.x > EXTENT || anchor.y < 0 || anchor.y > EXTENT);
++    // if we found a parent tile containing the original geometry, we can drill down from it
++    if (debug > 1) console.log('found parent tile z%d-%d-%d', z0, x0, y0);
+ 
+-            if (avoidEdges && !inside) continue;
++    // it parent tile is a solid clipped square, return it instead since it's identical
++    if (isClippedSquare(parent, extent, options.buffer)) return transform.tile(parent, extent);
+ 
+-            // Normally symbol layers are drawn across tile boundaries. Only symbols
+-            // with their anchors within the tile boundaries are added to the buffers
+-            // to prevent symbols from being drawn twice.
+-            //
+-            // Symbols in layers with overlap are sorted in the y direction so that
+-            // symbols lower on the canvas are drawn on top of symbols near the top.
+-            // To preserve this order across tile boundaries these symbols can't
+-            // be drawn across tile boundaries. Instead they need to be included in
+-            // the buffers for both tiles and clipped to tile boundaries at draw time.
+-            var addToBuffers = inside || mayOverlap;
++    if (debug > 1) console.time('drilling down');
++    var solid = this.splitTile(parent.source, z0, x0, y0, z, x, y);
++    if (debug > 1) console.timeEnd('drilling down');
+ 
+-            this.symbolInstances.push(new SymbolInstance(anchor, line, shapedText, shapedIcon, layout,
+-                        addToBuffers, this.symbolInstances.length, this.collisionBoxArray, featureIndex, this.sourceLayerIndex, this.index,
+-                        textBoxScale, textPadding, textAlongLine,
+-                        iconBoxScale, iconPadding, iconAlongLine));
+-        }
++    // one of the parent tiles was a solid clipped square
++    if (solid !== null) {
++        var m = 1 << (z - solid);
++        id = toID(solid, Math.floor(x / m), Math.floor(y / m));
+     }
+-};
+ 
+-SymbolBucket.prototype.anchorIsTooClose = function(text, repeatDistance, anchor) {
+-    var compareText = this.compareText;
+-    if (!(text in compareText)) {
+-        compareText[text] = [];
+-    } else {
+-        var otherAnchors = compareText[text];
+-        for (var k = otherAnchors.length - 1; k >= 0; k--) {
+-            if (anchor.dist(otherAnchors[k]) < repeatDistance) {
+-                // If it's within repeatDistance of one anchor, stop looking
+-                return true;
+-            }
+-        }
+-    }
+-    // If anchor is not within repeatDistance of any other anchor, add to array
+-    compareText[text].push(anchor);
+-    return false;
++    return this.tiles[id] ? transform.tile(this.tiles[id], extent) : null;
+ };
+ 
+-SymbolBucket.prototype.placeFeatures = function(collisionTile, showCollisionBoxes) {
+-    this.recalculateStyleLayers();
+-
+-    // Calculate which labels can be shown and when they can be shown and
+-    // create the bufers used for rendering.
++function toID(z, x, y) {
++    return (((1 << z) * y + x) * 32) + z;
++}
+ 
+-    this.createArrays();
++function intersectX(a, b, x) {
++    return [x, (x - a[0]) * (b[1] - a[1]) / (b[0] - a[0]) + a[1], 1];
++}
++function intersectY(a, b, y) {
++    return [(y - a[1]) * (b[0] - a[0]) / (b[1] - a[1]) + a[0], y, 1];
++}
+ 
+-    var layout = this.layer.layout;
++function extend(dest, src) {
++    for (var i in src) dest[i] = src[i];
++    return dest;
++}
+ 
+-    var maxScale = collisionTile.maxScale;
++// checks whether a tile is a whole-area fill after clipping; if it is, there's no sense slicing it further
++function isClippedSquare(tile, extent, buffer) {
+ 
+-    var textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
+-    var iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
++    var features = tile.source;
++    if (features.length !== 1) return false;
+ 
+-    var mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
+-        layout['text-ignore-placement'] || layout['icon-ignore-placement'];
++    var feature = features[0];
++    if (feature.type !== 3 || feature.geometry.length > 1) return false;
+ 
+-    // Sort symbols by their y position on the canvas so that they lower symbols
+-    // are drawn on top of higher symbols.
+-    // Don't sort symbols that won't overlap because it isn't necessary and
+-    // because it causes more labels to pop in and out when rotating.
+-    if (mayOverlap) {
+-        var angle = collisionTile.angle;
+-        var sin = Math.sin(angle),
+-            cos = Math.cos(angle);
++    var len = feature.geometry[0].length;
++    if (len !== 5) return false;
+ 
+-        this.symbolInstances.sort(function(a, b) {
+-            var aRotated = (sin * a.x + cos * a.y) | 0;
+-            var bRotated = (sin * b.x + cos * b.y) | 0;
+-            return (aRotated - bRotated) || (b.index - a.index);
+-        });
++    for (var i = 0; i < len; i++) {
++        var p = transform.point(feature.geometry[0][i], extent, tile.z2, tile.x, tile.y);
++        if ((p[0] !== -buffer && p[0] !== extent + buffer) ||
++            (p[1] !== -buffer && p[1] !== extent + buffer)) return false;
+     }
+ 
+-    for (var p = 0; p < this.symbolInstances.length; p++) {
+-        var symbolInstance = this.symbolInstances[p];
+-        var hasText = symbolInstance.hasText;
+-        var hasIcon = symbolInstance.hasIcon;
+-
+-        var iconWithoutText = layout['text-optional'] || !hasText,
+-            textWithoutIcon = layout['icon-optional'] || !hasIcon;
++    return true;
++}
+ 
++},{"./clip":15,"./convert":16,"./tile":20,"./transform":21,"./wrap":22}],19:[function(require,module,exports){
++'use strict';
+ 
+-        // Calculate the scales at which the text and icon can be placed without collision.
++module.exports = simplify;
+ 
+-        var glyphScale = hasText ?
+-            collisionTile.placeCollisionFeature(symbolInstance.textCollisionFeature,
+-                    layout['text-allow-overlap'], layout['symbol-avoid-edges']) :
+-            collisionTile.minScale;
++// calculate simplification data using optimized Douglas-Peucker algorithm
+ 
+-        var iconScale = hasIcon ?
+-            collisionTile.placeCollisionFeature(symbolInstance.iconCollisionFeature,
+-                    layout['icon-allow-overlap'], layout['symbol-avoid-edges']) :
+-            collisionTile.minScale;
++function simplify(points, tolerance) {
+ 
++    var sqTolerance = tolerance * tolerance,
++        len = points.length,
++        first = 0,
++        last = len - 1,
++        stack = [],
++        i, maxSqDist, sqDist, index;
+ 
+-        // Combine the scales for icons and text.
++    // always retain the endpoints (1 is the max value)
++    points[first][2] = 1;
++    points[last][2] = 1;
+ 
+-        if (!iconWithoutText && !textWithoutIcon) {
+-            iconScale = glyphScale = Math.max(iconScale, glyphScale);
+-        } else if (!textWithoutIcon && glyphScale) {
+-            glyphScale = Math.max(iconScale, glyphScale);
+-        } else if (!iconWithoutText && iconScale) {
+-            iconScale = Math.max(iconScale, glyphScale);
+-        }
++    // avoid recursion by using a stack
++    while (last) {
+ 
++        maxSqDist = 0;
+ 
+-        // Insert final placement into collision tree and add glyphs/icons to buffers
++        for (i = first + 1; i < last; i++) {
++            sqDist = getSqSegDist(points[i], points[first], points[last]);
+ 
+-        if (hasText) {
+-            collisionTile.insertCollisionFeature(symbolInstance.textCollisionFeature, glyphScale, layout['text-ignore-placement']);
+-            if (glyphScale <= maxScale) {
+-                this.addSymbols('glyph', symbolInstance.glyphQuads, glyphScale, layout['text-keep-upright'], textAlongLine, collisionTile.angle);
++            if (sqDist > maxSqDist) {
++                index = i;
++                maxSqDist = sqDist;
+             }
+         }
+ 
+-        if (hasIcon) {
+-            collisionTile.insertCollisionFeature(symbolInstance.iconCollisionFeature, iconScale, layout['icon-ignore-placement']);
+-            if (iconScale <= maxScale) {
+-                this.addSymbols('icon', symbolInstance.iconQuads, iconScale, layout['icon-keep-upright'], iconAlongLine, collisionTile.angle);
+-            }
+-        }
++        if (maxSqDist > sqTolerance) {
++            points[index][2] = maxSqDist; // save the point importance in squared pixels as a z coordinate
++            stack.push(first);
++            stack.push(index);
++            first = index;
+ 
++        } else {
++            last = stack.pop();
++            first = stack.pop();
++        }
+     }
++}
+ 
+-    if (showCollisionBoxes) this.addToDebugBuffers(collisionTile);
+-};
+-
+-SymbolBucket.prototype.addSymbols = function(programName, quads, scale, keepUpright, alongLine, placementAngle) {
+-
+-    var group = this.makeRoomFor(programName, 4 * quads.length);
+-
+-    var elementArray = group.layout.element;
+-    var vertexArray = group.layout.vertex;
+-
+-    var zoom = this.zoom;
+-    var placementZoom = Math.max(Math.log(scale) / Math.LN2 + zoom, 0);
++// square distance from a point to a segment
++function getSqSegDist(p, a, b) {
+ 
+-    for (var k = 0; k < quads.length; k++) {
++    var x = a[0], y = a[1],
++        bx = b[0], by = b[1],
++        px = p[0], py = p[1],
++        dx = bx - x,
++        dy = by - y;
+ 
+-        var symbol = quads[k],
+-            angle = symbol.angle;
++    if (dx !== 0 || dy !== 0) {
+ 
+-        // drop upside down versions of glyphs
+-        var a = (angle + placementAngle + Math.PI) % (Math.PI * 2);
+-        if (keepUpright && alongLine && (a <= Math.PI / 2 || a > Math.PI * 3 / 2)) continue;
++        var t = ((px - x) * dx + (py - y) * dy) / (dx * dx + dy * dy);
+ 
+-        var tl = symbol.tl,
+-            tr = symbol.tr,
+-            bl = symbol.bl,
+-            br = symbol.br,
+-            tex = symbol.tex,
+-            anchorPoint = symbol.anchorPoint,
++        if (t > 1) {
++            x = bx;
++            y = by;
+ 
+-            minZoom = Math.max(zoom + Math.log(symbol.minScale) / Math.LN2, placementZoom),
+-            maxZoom = Math.min(zoom + Math.log(symbol.maxScale) / Math.LN2, 25);
++        } else if (t > 0) {
++            x += dx * t;
++            y += dy * t;
++        }
++    }
+ 
+-        if (maxZoom <= minZoom) continue;
++    dx = px - x;
++    dy = py - y;
+ 
+-        // Lower min zoom so that while fading out the label it can be shown outside of collision-free zoom levels
+-        if (minZoom === placementZoom) minZoom = 0;
++    return dx * dx + dy * dy;
++}
+ 
+-        var index = addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tl.x, tl.y, tex.x, tex.y, minZoom, maxZoom, placementZoom);
+-        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tr.x, tr.y, tex.x + tex.w, tex.y, minZoom, maxZoom, placementZoom);
+-        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, bl.x, bl.y, tex.x, tex.y + tex.h, minZoom, maxZoom, placementZoom);
+-        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, br.x, br.y, tex.x + tex.w, tex.y + tex.h, minZoom, maxZoom, placementZoom);
++},{}],20:[function(require,module,exports){
++'use strict';
+ 
+-        elementArray.emplaceBack(index, index + 1, index + 2);
+-        elementArray.emplaceBack(index + 1, index + 2, index + 3);
+-    }
++module.exports = createTile;
+ 
+-};
++function createTile(features, z2, tx, ty, tolerance, noSimplify) {
++    var tile = {
++        features: [],
++        numPoints: 0,
++        numSimplified: 0,
++        numFeatures: 0,
++        source: null,
++        x: tx,
++        y: ty,
++        z2: z2,
++        transformed: false,
++        min: [2, 1],
++        max: [-1, 0]
++    };
++    for (var i = 0; i < features.length; i++) {
++        tile.numFeatures++;
++        addFeature(tile, features[i], tolerance, noSimplify);
+ 
+-SymbolBucket.prototype.updateIcons = function(icons) {
+-    this.recalculateStyleLayers();
+-    var iconValue = this.layer.layout['icon-image'];
+-    if (!iconValue) return;
++        var min = features[i].min,
++            max = features[i].max;
+ 
+-    for (var i = 0; i < this.features.length; i++) {
+-        var iconName = resolveTokens(this.features[i].properties, iconValue);
+-        if (iconName)
+-            icons[iconName] = true;
++        if (min[0] < tile.min[0]) tile.min[0] = min[0];
++        if (min[1] < tile.min[1]) tile.min[1] = min[1];
++        if (max[0] > tile.max[0]) tile.max[0] = max[0];
++        if (max[1] > tile.max[1]) tile.max[1] = max[1];
+     }
+-};
++    return tile;
++}
+ 
+-SymbolBucket.prototype.updateFont = function(stacks) {
+-    this.recalculateStyleLayers();
+-    var fontName = this.layer.layout['text-font'],
+-        stack = stacks[fontName] = stacks[fontName] || {};
++function addFeature(tile, feature, tolerance, noSimplify) {
+ 
+-    this.textFeatures = resolveText(this.features, this.layer.layout, stack);
+-};
++    var geom = feature.geometry,
++        type = feature.type,
++        simplified = [],
++        sqTolerance = tolerance * tolerance,
++        i, j, ring, p;
+ 
+-SymbolBucket.prototype.addToDebugBuffers = function(collisionTile) {
+-    var group = this.makeRoomFor('collisionBox', 0);
+-    var vertexArray = group.layout.vertex;
+-    var angle = -collisionTile.angle;
+-    var yStretch = collisionTile.yStretch;
++    if (type === 1) {
++        for (i = 0; i < geom.length; i++) {
++            simplified.push(geom[i]);
++            tile.numPoints++;
++            tile.numSimplified++;
++        }
+ 
+-    for (var j = 0; j < this.symbolInstances.length; j++) {
+-        for (var i = 0; i < 2; i++) {
+-            var feature = this.symbolInstances[j][i === 0 ? 'textCollisionFeature' : 'iconCollisionFeature'];
+-            if (!feature) continue;
++    } else {
+ 
+-            for (var b = feature.boxStartIndex; b < feature.boxEndIndex; b++) {
+-                var box = this.collisionBoxArray.get(b);
+-                var anchorPoint = box.anchorPoint;
++        // simplify and transform projected coordinates for tile geometry
++        for (i = 0; i < geom.length; i++) {
++            ring = geom[i];
+ 
+-                var tl = new Point(box.x1, box.y1 * yStretch)._rotate(angle);
+-                var tr = new Point(box.x2, box.y1 * yStretch)._rotate(angle);
+-                var bl = new Point(box.x1, box.y2 * yStretch)._rotate(angle);
+-                var br = new Point(box.x2, box.y2 * yStretch)._rotate(angle);
++            // filter out tiny polylines & polygons
++            if (!noSimplify && ((type === 2 && ring.dist < tolerance) ||
++                                (type === 3 && ring.area < sqTolerance))) {
++                tile.numPoints += ring.length;
++                continue;
++            }
+ 
+-                var maxZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.maxScale) / Math.LN2));
+-                var placementZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.placementScale) / Math.LN2));
++            var simplifiedRing = [];
+ 
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
++            for (j = 0; j < ring.length; j++) {
++                p = ring[j];
++                // keep points with importance > tolerance
++                if (noSimplify || p[2] > sqTolerance) {
++                    simplifiedRing.push(p);
++                    tile.numSimplified++;
++                }
++                tile.numPoints++;
+             }
+-        }
+-    }
+-};
+-
+-function SymbolInstance(anchor, line, shapedText, shapedIcon, layout, addToBuffers, index, collisionBoxArray, featureIndex, sourceLayerIndex, bucketIndex,
+-                        textBoxScale, textPadding, textAlongLine,
+-                        iconBoxScale, iconPadding, iconAlongLine) {
+ 
+-    this.x = anchor.x;
+-    this.y = anchor.y;
+-    this.index = index;
+-    this.hasText = !!shapedText;
+-    this.hasIcon = !!shapedIcon;
++            if (type === 3) rewind(simplifiedRing, ring.outer);
+ 
+-    if (this.hasText) {
+-        this.glyphQuads = addToBuffers ? getGlyphQuads(anchor, shapedText, textBoxScale, line, layout, textAlongLine) : [];
+-        this.textCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
+-                shapedText, textBoxScale, textPadding, textAlongLine, false);
++            simplified.push(simplifiedRing);
++        }
+     }
+ 
+-    if (this.hasIcon) {
+-        this.iconQuads = addToBuffers ? getIconQuads(anchor, shapedIcon, iconBoxScale, line, layout, iconAlongLine) : [];
+-        this.iconCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
+-                shapedIcon, iconBoxScale, iconPadding, iconAlongLine, true);
++    if (simplified.length) {
++        var tileFeature = {
++            geometry: simplified,
++            type: type,
++            tags: feature.tags || null
++        };
++        if (feature.id !== null) {
++            tileFeature.id = feature.id;
++        }
++        tile.features.push(tileFeature);
+     }
+ }
+ 
+-},{"../../symbol/anchor":73,"../../symbol/clip_line":75,"../../symbol/collision_feature":77,"../../symbol/get_anchors":79,"../../symbol/mergelines":82,"../../symbol/quads":83,"../../symbol/resolve_text":84,"../../symbol/shaping":85,"../../util/token":118,"../../util/util":119,"../bucket":17,"../load_geometry":24,"point-geometry":174}],22:[function(require,module,exports){
+-'use strict';
+-
+-var assert = require('assert');
+-
+-module.exports = Buffer;
++function rewind(ring, clockwise) {
++    var area = signedArea(ring);
++    if (area < 0 === clockwise) ring.reverse();
++}
+ 
+-/**
+- * The `Buffer` class turns a `StructArray` into a WebGL buffer. Each member of the StructArray's
+- * Struct type is converted to a WebGL atribute.
+- *
+- * @class Buffer
+- * @private
+- * @param {object} array A serialized StructArray.
+- * @param {object} arrayType A serialized StructArrayType.
+- * @param {BufferType} type
+- */
+-function Buffer(array, arrayType, type) {
+-    this.arrayBuffer = array.arrayBuffer;
+-    this.length = array.length;
+-    this.attributes = arrayType.members;
+-    this.itemSize = arrayType.bytesPerElement;
+-    this.type = type;
+-    this.arrayType = arrayType;
++function signedArea(ring) {
++    var sum = 0;
++    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
++        p1 = ring[i];
++        p2 = ring[j];
++        sum += (p2[0] - p1[0]) * (p1[1] + p2[1]);
++    }
++    return sum;
+ }
+ 
+-/**
+- * Bind this buffer to a WebGL context.
+- * @private
+- * @param gl The WebGL context
+- */
+-Buffer.prototype.bind = function(gl) {
+-    var type = gl[this.type];
++},{}],21:[function(require,module,exports){
++'use strict';
+ 
+-    if (!this.buffer) {
+-        this.buffer = gl.createBuffer();
+-        gl.bindBuffer(type, this.buffer);
+-        gl.bufferData(type, this.arrayBuffer, gl.STATIC_DRAW);
++exports.tile = transformTile;
++exports.point = transformPoint;
+ 
+-        // dump array buffer once it's bound to gl
+-        this.arrayBuffer = null;
+-    } else {
+-        gl.bindBuffer(type, this.buffer);
+-    }
+-};
++// Transforms the coordinates of each feature in the given tile from
++// mercator-projected space into (extent x extent) tile space.
++function transformTile(tile, extent) {
++    if (tile.transformed) return tile;
+ 
+-/**
+- * @enum {string} AttributeType
+- * @private
+- * @readonly
+- */
+-var AttributeType = {
+-    Int8:   'BYTE',
+-    Uint8:  'UNSIGNED_BYTE',
+-    Int16:  'SHORT',
+-    Uint16: 'UNSIGNED_SHORT'
+-};
++    var z2 = tile.z2,
++        tx = tile.x,
++        ty = tile.y,
++        i, j, k;
+ 
+-/**
+- * Set the attribute pointers in a WebGL context
+- * @private
+- * @param gl The WebGL context
+- * @param program The active WebGL program
+- */
+-Buffer.prototype.setVertexAttribPointers = function(gl, program) {
+-    for (var j = 0; j < this.attributes.length; j++) {
+-        var member = this.attributes[j];
+-        var attribIndex = program[member.name];
+-        assert(attribIndex !== undefined, 'array member "' + member.name + '" name does not match shader attribute name');
++    for (i = 0; i < tile.features.length; i++) {
++        var feature = tile.features[i],
++            geom = feature.geometry,
++            type = feature.type;
+ 
+-        gl.vertexAttribPointer(
+-            attribIndex,
+-            member.components,
+-            gl[AttributeType[member.type]],
+-            false,
+-            this.arrayType.bytesPerElement,
+-            member.offset
+-        );
+-    }
+-};
++        if (type === 1) {
++            for (j = 0; j < geom.length; j++) geom[j] = transformPoint(geom[j], extent, z2, tx, ty);
+ 
+-/**
+- * Destroy the GL buffer bound to the given WebGL context
+- * @private
+- * @param gl The WebGL context
+- */
+-Buffer.prototype.destroy = function(gl) {
+-    if (this.buffer) {
+-        gl.deleteBuffer(this.buffer);
++        } else {
++            for (j = 0; j < geom.length; j++) {
++                var ring = geom[j];
++                for (k = 0; k < ring.length; k++) ring[k] = transformPoint(ring[k], extent, z2, tx, ty);
++            }
++        }
+     }
+-};
+ 
+-/**
+- * @enum {string} BufferType
+- * @private
+- * @readonly
+- */
+-Buffer.BufferType = {
+-    VERTEX: 'ARRAY_BUFFER',
+-    ELEMENT: 'ELEMENT_ARRAY_BUFFER'
+-};
++    tile.transformed = true;
+ 
+-/**
+- * An `BufferType.ELEMENT` buffer holds indicies of a corresponding `BufferType.VERTEX` buffer.
+- * These indicies are stored in the `BufferType.ELEMENT` buffer as `UNSIGNED_SHORT`s.
+- *
+- * @private
+- * @readonly
+- */
+-Buffer.ELEMENT_ATTRIBUTE_TYPE = 'Uint16';
++    return tile;
++}
+ 
+-/**
+- * WebGL performs best if vertex attribute offsets are aligned to 4 byte boundaries.
+- * @private
+- * @readonly
+- */
+-Buffer.VERTEX_ATTRIBUTE_ALIGNMENT = 4;
++function transformPoint(p, extent, z2, tx, ty) {
++    var x = Math.round(extent * (p[0] * z2 - tx)),
++        y = Math.round(extent * (p[1] * z2 - ty));
++    return [x, y];
++}
+ 
+-},{"assert":6}],23:[function(require,module,exports){
++},{}],22:[function(require,module,exports){
+ 'use strict';
+ 
+-var Point = require('point-geometry');
+-var loadGeometry = require('./load_geometry');
+-var EXTENT = require('./bucket').EXTENT;
+-var featureFilter = require('feature-filter');
+-var StructArrayType = require('../util/struct_array');
+-var Grid = require('grid-index');
+-var DictionaryCoder = require('../util/dictionary_coder');
+-var vt = require('vector-tile');
+-var Protobuf = require('pbf');
+-var GeoJSONFeature = require('../util/vectortile_to_geojson');
+-var arraysIntersect = require('../util/util').arraysIntersect;
+-
+-var intersection = require('../util/intersection_tests');
+-var multiPolygonIntersectsBufferedMultiPoint = intersection.multiPolygonIntersectsBufferedMultiPoint;
+-var multiPolygonIntersectsMultiPolygon = intersection.multiPolygonIntersectsMultiPolygon;
+-var multiPolygonIntersectsBufferedMultiLine = intersection.multiPolygonIntersectsBufferedMultiLine;
++var clip = require('./clip');
++var createFeature = require('./feature');
+ 
++module.exports = wrap;
+ 
+-var FeatureIndexArray = new StructArrayType({
+-    members: [
+-        // the index of the feature in the original vectortile
+-        { type: 'Uint32', name: 'featureIndex' },
+-        // the source layer the feature appears in
+-        { type: 'Uint16', name: 'sourceLayerIndex' },
+-        // the bucket the feature appears in
+-        { type: 'Uint16', name: 'bucketIndex' }
+-    ]});
++function wrap(features, buffer, intersectX) {
++    var merged = features,
++        left  = clip(features, 1, -1 - buffer, buffer,     0, intersectX, -1, 2), // left world copy
++        right = clip(features, 1,  1 - buffer, 2 + buffer, 0, intersectX, -1, 2); // right world copy
+ 
+-module.exports = FeatureIndex;
++    if (left || right) {
++        merged = clip(features, 1, -buffer, 1 + buffer, 0, intersectX, -1, 2) || []; // center world copy
+ 
+-function FeatureIndex(coord, overscaling, collisionTile) {
+-    if (coord.grid) {
+-        var serialized = coord;
+-        var rawTileData = overscaling;
+-        coord = serialized.coord;
+-        overscaling = serialized.overscaling;
+-        this.grid = new Grid(serialized.grid);
+-        this.featureIndexArray = new FeatureIndexArray(serialized.featureIndexArray);
+-        this.rawTileData = rawTileData;
+-        this.bucketLayerIDs = serialized.bucketLayerIDs;
+-    } else {
+-        this.grid = new Grid(EXTENT, 16, 0);
+-        this.featureIndexArray = new FeatureIndexArray();
++        if (left) merged = shiftFeatureCoords(left, 1).concat(merged); // merge left into center
++        if (right) merged = merged.concat(shiftFeatureCoords(right, -1)); // merge right into center
+     }
+-    this.coord = coord;
+-    this.overscaling = overscaling;
+-    this.x = coord.x;
+-    this.y = coord.y;
+-    this.z = coord.z - Math.log(overscaling) / Math.LN2;
+-    this.setCollisionTile(collisionTile);
++
++    return merged;
+ }
+ 
+-FeatureIndex.prototype.insert = function(feature, featureIndex, sourceLayerIndex, bucketIndex) {
+-    var key = this.featureIndexArray.length;
+-    this.featureIndexArray.emplaceBack(featureIndex, sourceLayerIndex, bucketIndex);
+-    var geometry = loadGeometry(feature);
++function shiftFeatureCoords(features, offset) {
++    var newFeatures = [];
+ 
+-    for (var r = 0; r < geometry.length; r++) {
+-        var ring = geometry[r];
++    for (var i = 0; i < features.length; i++) {
++        var feature = features[i],
++            type = feature.type;
+ 
+-        // TODO: skip holes when we start using vector tile spec 2.0
++        var newGeometry;
+ 
+-        var bbox = [Infinity, Infinity, -Infinity, -Infinity];
+-        for (var i = 0; i < ring.length; i++) {
+-            var p = ring[i];
+-            bbox[0] = Math.min(bbox[0], p.x);
+-            bbox[1] = Math.min(bbox[1], p.y);
+-            bbox[2] = Math.max(bbox[2], p.x);
+-            bbox[3] = Math.max(bbox[3], p.y);
++        if (type === 1) {
++            newGeometry = shiftCoords(feature.geometry, offset);
++        } else {
++            newGeometry = [];
++            for (var j = 0; j < feature.geometry.length; j++) {
++                newGeometry.push(shiftCoords(feature.geometry[j], offset));
++            }
+         }
+ 
+-        this.grid.insert(key, bbox[0], bbox[1], bbox[2], bbox[3]);
++        newFeatures.push(createFeature(feature.tags, type, newGeometry, feature.id));
+     }
+-};
+ 
+-FeatureIndex.prototype.setCollisionTile = function(collisionTile) {
+-    this.collisionTile = collisionTile;
+-};
++    return newFeatures;
++}
+ 
+-FeatureIndex.prototype.serialize = function() {
+-    var data = {
+-        coord: this.coord,
+-        overscaling: this.overscaling,
+-        grid: this.grid.toArrayBuffer(),
+-        featureIndexArray: this.featureIndexArray.serialize(),
+-        bucketLayerIDs: this.bucketLayerIDs
+-    };
+-    return {
+-        data: data,
+-        transferables: [data.grid, data.featureIndexArray.arrayBuffer]
+-    };
+-};
++function shiftCoords(points, offset) {
++    var newPoints = [];
++    newPoints.area = points.area;
++    newPoints.dist = points.dist;
+ 
+-function translateDistance(translate) {
+-    return Math.sqrt(translate[0] * translate[0] + translate[1] * translate[1]);
++    for (var i = 0; i < points.length; i++) {
++        newPoints.push([points[i][0] + offset, points[i][1], points[i][2]]);
++    }
++    return newPoints;
+ }
+ 
+-// Finds features in this tile at a particular position.
+-FeatureIndex.prototype.query = function(args, styleLayers) {
+-    if (!this.vtLayers) {
+-        this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
+-        this.sourceLayerCoder = new DictionaryCoder(this.vtLayers ? Object.keys(this.vtLayers).sort() : ['_geojsonTileLayer']);
+-    }
++},{"./clip":15,"./feature":17}],23:[function(require,module,exports){
++module.exports = fromQuat;
+ 
+-    var result = {};
++/**
++ * Creates a matrix from a quaternion rotation.
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @returns {mat4} out
++ */
++function fromQuat(out, q) {
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-    var params = args.params || {},
+-        pixelsToTileUnits = EXTENT / args.tileSize / args.scale,
+-        filter = featureFilter(params.filter);
++        xx = x * x2,
++        yx = y * x2,
++        yy = y * y2,
++        zx = z * x2,
++        zy = z * y2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-    // Features are indexed their original geometries. The rendered geometries may
+-    // be buffered, translated or offset. Figure out how much the search radius needs to be
+-    // expanded by to include these features.
+-    var additionalRadius = 0;
+-    for (var id in styleLayers) {
+-        var styleLayer = styleLayers[id];
+-        var paint = styleLayer.paint;
++    out[0] = 1 - yy - zz;
++    out[1] = yx + wz;
++    out[2] = zx - wy;
++    out[3] = 0;
+ 
+-        var styleLayerDistance = 0;
+-        if (styleLayer.type === 'line') {
+-            styleLayerDistance = getLineWidth(paint) / 2 + Math.abs(paint['line-offset']) + translateDistance(paint['line-translate']);
+-        } else if (styleLayer.type === 'fill') {
+-            styleLayerDistance = translateDistance(paint['fill-translate']);
+-        } else if (styleLayer.type === 'circle') {
+-            styleLayerDistance = paint['circle-radius'] + translateDistance(paint['circle-translate']);
+-        }
+-        additionalRadius = Math.max(additionalRadius, styleLayerDistance * pixelsToTileUnits);
+-    }
+-
+-    var queryGeometry = args.queryGeometry.map(function(q) {
+-        return q.map(function(p) {
+-            return new Point(p.x, p.y);
+-        });
+-    });
+-
+-    var minX = Infinity;
+-    var minY = Infinity;
+-    var maxX = -Infinity;
+-    var maxY = -Infinity;
+-    for (var i = 0; i < queryGeometry.length; i++) {
+-        var ring = queryGeometry[i];
+-        for (var k = 0; k < ring.length; k++) {
+-            var p = ring[k];
+-            minX = Math.min(minX, p.x);
+-            minY = Math.min(minY, p.y);
+-            maxX = Math.max(maxX, p.x);
+-            maxY = Math.max(maxY, p.y);
+-        }
+-    }
+-
+-    var matching = this.grid.query(minX - additionalRadius, minY - additionalRadius, maxX + additionalRadius, maxY + additionalRadius);
+-    matching.sort(topDownFeatureComparator);
+-    this.filterMatching(result, matching, this.featureIndexArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+-
+-    var matchingSymbols = this.collisionTile.queryRenderedSymbols(minX, minY, maxX, maxY, args.scale);
+-    matchingSymbols.sort();
+-    this.filterMatching(result, matchingSymbols, this.collisionTile.collisionBoxArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+-
+-    return result;
+-};
+-
+-function topDownFeatureComparator(a, b) {
+-    return b - a;
+-}
+-
+-function getLineWidth(paint) {
+-    if (paint['line-gap-width'] > 0) {
+-        return paint['line-gap-width'] + 2 * paint['line-width'];
+-    } else {
+-        return paint['line-width'];
+-    }
+-}
+-
+-FeatureIndex.prototype.filterMatching = function(result, matching, array, queryGeometry, filter, filterLayerIDs, styleLayers, bearing, pixelsToTileUnits) {
+-    var previousIndex;
+-    for (var k = 0; k < matching.length; k++) {
+-        var index = matching[k];
+-
+-        // don't check the same feature more than once
+-        if (index === previousIndex) continue;
+-        previousIndex = index;
+-
+-        var match = array.get(index);
+-
+-        var layerIDs = this.bucketLayerIDs[match.bucketIndex];
+-        if (filterLayerIDs && !arraysIntersect(filterLayerIDs, layerIDs)) continue;
+-
+-        var sourceLayerName = this.sourceLayerCoder.decode(match.sourceLayerIndex);
+-        var sourceLayer = this.vtLayers[sourceLayerName];
+-        var feature = sourceLayer.feature(match.featureIndex);
+-
+-        if (!filter(feature)) continue;
+-
+-        var geometry = null;
+-
+-        for (var l = 0; l < layerIDs.length; l++) {
+-            var layerID = layerIDs[l];
+-
+-            if (filterLayerIDs && filterLayerIDs.indexOf(layerID) < 0) {
+-                continue;
+-            }
+-
+-            var styleLayer = styleLayers[layerID];
+-            if (!styleLayer) continue;
+-
+-            var translatedPolygon;
+-            if (styleLayer.type !== 'symbol') {
+-                // all symbols already match the style
+-
+-                if (!geometry) geometry = loadGeometry(feature);
+-
+-                var paint = styleLayer.paint;
+-
+-                if (styleLayer.type === 'line') {
+-                    translatedPolygon = translate(queryGeometry,
+-                            paint['line-translate'], paint['line-translate-anchor'],
+-                            bearing, pixelsToTileUnits);
+-                    var halfWidth = getLineWidth(paint) / 2 * pixelsToTileUnits;
+-                    if (paint['line-offset']) {
+-                        geometry = offsetLine(geometry, paint['line-offset'] * pixelsToTileUnits);
+-                    }
+-                    if (!multiPolygonIntersectsBufferedMultiLine(translatedPolygon, geometry, halfWidth)) continue;
++    out[4] = yx - wz;
++    out[5] = 1 - xx - zz;
++    out[6] = zy + wx;
++    out[7] = 0;
+ 
+-                } else if (styleLayer.type === 'fill') {
+-                    translatedPolygon = translate(queryGeometry,
+-                            paint['fill-translate'], paint['fill-translate-anchor'],
+-                            bearing, pixelsToTileUnits);
+-                    if (!multiPolygonIntersectsMultiPolygon(translatedPolygon, geometry)) continue;
++    out[8] = zx + wy;
++    out[9] = zy - wx;
++    out[10] = 1 - xx - yy;
++    out[11] = 0;
+ 
+-                } else if (styleLayer.type === 'circle') {
+-                    translatedPolygon = translate(queryGeometry,
+-                            paint['circle-translate'], paint['circle-translate-anchor'],
+-                            bearing, pixelsToTileUnits);
+-                    var circleRadius = paint['circle-radius'] * pixelsToTileUnits;
+-                    if (!multiPolygonIntersectsBufferedMultiPoint(translatedPolygon, geometry, circleRadius)) continue;
+-                }
+-            }
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
+ 
+-            var geojsonFeature = new GeoJSONFeature(feature, this.z, this.x, this.y);
+-            geojsonFeature.layer = styleLayer.serialize({
+-                includeRefProperties: true
+-            });
+-            var layerResult = result[layerID];
+-            if (layerResult === undefined) {
+-                layerResult = result[layerID] = [];
+-            }
+-            layerResult.push(geojsonFeature);
+-        }
+-    }
++    return out;
+ };
++},{}],24:[function(require,module,exports){
++/**
++ * @fileoverview gl-matrix - High performance matrix and vector operations
++ * @author Brandon Jones
++ * @author Colin MacKenzie IV
++ * @version 2.3.2
++ */
+ 
+-function translate(queryGeometry, translate, translateAnchor, bearing, pixelsToTileUnits) {
+-    if (!translate[0] && !translate[1]) {
+-        return queryGeometry;
+-    }
+-
+-    translate = Point.convert(translate);
+-
+-    if (translateAnchor === "viewport") {
+-        translate._rotate(-bearing);
+-    }
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-    var translated = [];
+-    for (var i = 0; i < queryGeometry.length; i++) {
+-        var ring = queryGeometry[i];
+-        var translatedRing = [];
+-        for (var k = 0; k < ring.length; k++) {
+-            translatedRing.push(ring[k].sub(translate._mult(pixelsToTileUnits)));
+-        }
+-        translated.push(translatedRing);
+-    }
+-    return translated;
+-}
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-function offsetLine(rings, offset) {
+-    var newRings = [];
+-    var zero = new Point(0, 0);
+-    for (var k = 0; k < rings.length; k++) {
+-        var ring = rings[k];
+-        var newRing = [];
+-        for (var i = 0; i < ring.length; i++) {
+-            var a = ring[i - 1];
+-            var b = ring[i];
+-            var c = ring[i + 1];
+-            var aToB = i === 0 ? zero : b.sub(a)._unit()._perp();
+-            var bToC = i === ring.length - 1 ? zero : c.sub(b)._unit()._perp();
+-            var extrude = aToB._add(bToC)._unit();
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-            var cosHalfAngle = extrude.x * bToC.x + extrude.y * bToC.y;
+-            extrude._mult(1 / cosHalfAngle);
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
++// END HEADER
+ 
+-            newRing.push(extrude._mult(offset)._add(b));
+-        }
+-        newRings.push(newRing);
+-    }
+-    return newRings;
+-}
++exports.glMatrix = require("./gl-matrix/common.js");
++exports.mat2 = require("./gl-matrix/mat2.js");
++exports.mat2d = require("./gl-matrix/mat2d.js");
++exports.mat3 = require("./gl-matrix/mat3.js");
++exports.mat4 = require("./gl-matrix/mat4.js");
++exports.quat = require("./gl-matrix/quat.js");
++exports.vec2 = require("./gl-matrix/vec2.js");
++exports.vec3 = require("./gl-matrix/vec3.js");
++exports.vec4 = require("./gl-matrix/vec4.js");
++},{"./gl-matrix/common.js":25,"./gl-matrix/mat2.js":26,"./gl-matrix/mat2d.js":27,"./gl-matrix/mat3.js":28,"./gl-matrix/mat4.js":29,"./gl-matrix/quat.js":30,"./gl-matrix/vec2.js":31,"./gl-matrix/vec3.js":32,"./gl-matrix/vec4.js":33}],25:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-},{"../util/dictionary_coder":110,"../util/intersection_tests":114,"../util/struct_array":117,"../util/util":119,"../util/vectortile_to_geojson":120,"./bucket":17,"./load_geometry":24,"feature-filter":122,"grid-index":143,"pbf":172,"point-geometry":174,"vector-tile":183}],24:[function(require,module,exports){
+-'use strict';
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-var EXTENT = require('./bucket').EXTENT;
+-var EXTENT_MIN = EXTENT * -2;
+-var EXTENT_MAX = (EXTENT * 2) - 1;
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-// only log a geometry warning once per context
+-var warned = false;
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+ /**
+- * Loads a geometry from a VectorTileFeature and scales it to the common extent
+- * used internally.
+- * @private
++ * @class Common utilities
++ * @name glMatrix
+  */
+-module.exports = function loadGeometry(feature) {
+-    var scale = EXTENT / feature.extent;
+-    var geometry = feature.loadGeometry();
+-    for (var r = 0; r < geometry.length; r++) {
+-        var ring = geometry[r];
+-        for (var p = 0; p < ring.length; p++) {
+-            var point = ring[p];
+-            // round here because mapbox-gl-native uses integers to represent
+-            // points and we need to do the same to avoid renering differences.
+-            point.x = Math.round(point.x * scale);
+-            point.y = Math.round(point.y * scale);
+-            if (warned === false && (
+-                point.x < EXTENT_MIN ||
+-                point.x > EXTENT_MAX ||
+-                point.y < EXTENT_MIN ||
+-                point.y > EXTENT_MAX)) {
+-                console.warn('Geometry exceeds allowed extent, reduce your vector tile buffer size');
+-                warned = true;
+-            }
+-        }
+-    }
+-    return geometry;
+-};
++var glMatrix = {};
+ 
+-},{"./bucket":17}],25:[function(require,module,exports){
+-'use strict';
++// Configuration Constants
++glMatrix.EPSILON = 0.000001;
++glMatrix.ARRAY_TYPE = (typeof Float32Array !== 'undefined') ? Float32Array : Array;
++glMatrix.RANDOM = Math.random;
++glMatrix.ENABLE_SIMD = false;
+ 
+-module.exports = Coordinate;
++// Capability detection
++glMatrix.SIMD_AVAILABLE = (glMatrix.ARRAY_TYPE === Float32Array) && ('SIMD' in this);
++glMatrix.USE_SIMD = glMatrix.ENABLE_SIMD && glMatrix.SIMD_AVAILABLE;
+ 
+ /**
+- * A coordinate is a column, row, zoom combination, often used
+- * as the data component of a tile.
++ * Sets the type of array used when creating new vectors and matrices
+  *
+- * @param {number} column
+- * @param {number} row
+- * @param {number} zoom
+- * @private
++ * @param {Type} type Array type, such as Float32Array or Array
+  */
+-function Coordinate(column, row, zoom) {
+-    this.column = column;
+-    this.row = row;
+-    this.zoom = zoom;
++glMatrix.setMatrixArrayType = function(type) {
++    glMatrix.ARRAY_TYPE = type;
+ }
+ 
+-Coordinate.prototype = {
++var degree = Math.PI / 180;
+ 
+-    /**
+-     * Create a clone of this coordinate that can be mutated without
+-     * changing the original coordinate
+-     *
+-     * @returns {Coordinate} clone
+-     * @private
+-     * var coord = new Coordinate(0, 0, 0);
+-     * var c2 = coord.clone();
+-     * // since coord is cloned, modifying a property of c2 does
+-     * // not modify it.
+-     * c2.zoom = 2;
+-     */
+-    clone: function() {
+-        return new Coordinate(this.column, this.row, this.zoom);
+-    },
++/**
++* Convert Degree To Radian
++*
++* @param {Number} Angle in Degrees
++*/
++glMatrix.toRadian = function(a){
++     return a * degree;
++}
+ 
+-    /**
+-     * Zoom this coordinate to a given zoom level. This returns a new
+-     * coordinate object, not mutating the old one.
+-     *
+-     * @param {number} zoom
+-     * @returns {Coordinate} zoomed coordinate
+-     * @private
+-     * @example
+-     * var coord = new Coordinate(0, 0, 0);
+-     * var c2 = coord.zoomTo(1);
+-     * c2 // equals new Coordinate(0, 0, 1);
+-     */
+-    zoomTo: function(zoom) { return this.clone()._zoomTo(zoom); },
++/**
++ * Tests whether or not the arguments have approximately the same value, within an absolute
++ * or relative tolerance of glMatrix.EPSILON (an absolute tolerance is used for values less 
++ * than or equal to 1.0, and a relative tolerance is used for larger values)
++ * 
++ * @param {Number} a The first number to test.
++ * @param {Number} b The second number to test.
++ * @returns {Boolean} True if the numbers are approximately equal, false otherwise.
++ */
++glMatrix.equals = function(a, b) {
++	return Math.abs(a - b) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a), Math.abs(b));
++}
+ 
+-    /**
+-     * Subtract the column and row values of this coordinate from those
+-     * of another coordinate. The other coordinat will be zoomed to the
+-     * same level as `this` before the subtraction occurs
+-     *
+-     * @param {Coordinate} c other coordinate
+-     * @returns {Coordinate} result
+-     * @private
+-     */
+-    sub: function(c) { return this.clone()._sub(c); },
++module.exports = glMatrix;
+ 
+-    _zoomTo: function(zoom) {
+-        var scale = Math.pow(2, zoom - this.zoom);
+-        this.column *= scale;
+-        this.row *= scale;
+-        this.zoom = zoom;
+-        return this;
+-    },
++},{}],26:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-    _sub: function(c) {
+-        c = c.zoomTo(this.zoom);
+-        this.column -= c.column;
+-        this.row -= c.row;
+-        return this;
+-    }
+-};
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-},{}],26:[function(require,module,exports){
+-'use strict';
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-module.exports = LngLat;
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-var wrap = require('../util/util').wrap;
++var glMatrix = require("./common.js");
+ 
+ /**
+- * Create a longitude, latitude object from a given longitude and latitude pair in degrees.
+- * Mapbox GL uses Longitude, Latitude coordinate order to match GeoJSON.
+- *
+- * Note that any Mapbox GL method that accepts a `LngLat` object can also accept an
+- * `Array` and will perform an implicit conversion.  The following lines are equivalent:
+- ```
+- map.setCenter([-73.9749, 40.7736]);
+- map.setCenter( new mapboxgl.LngLat(-73.9749, 40.7736) );
+- ```
+- *
+- * @class LngLat
+- * @classdesc A representation of a longitude, latitude point, in degrees.
+- * @param {number} lng longitude
+- * @param {number} lat latitude
+- * @example
+- * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
++ * @class 2x2 Matrix
++ * @name mat2
+  */
+-function LngLat(lng, lat) {
+-    if (isNaN(lng) || isNaN(lat)) {
+-        throw new Error('Invalid LngLat object: (' + lng + ', ' + lat + ')');
+-    }
+-    this.lng = +lng;
+-    this.lat = +lat;
+-    if (this.lat > 90 || this.lat < -90) {
+-        throw new Error('Invalid LngLat latitude value: must be between -90 and 90');
+-    }
+-}
++var mat2 = {};
+ 
+ /**
+- * Return a new `LngLat` object whose longitude is wrapped to the range (-180, 180).
++ * Creates a new identity mat2
+  *
+- * @returns {LngLat} wrapped LngLat object
+- * @example
+- * var ll = new mapboxgl.LngLat(286.0251, 40.7736);
+- * var wrapped = ll.wrap();
+- * wrapped.lng; // = -73.9749
++ * @returns {mat2} a new 2x2 matrix
+  */
+-LngLat.prototype.wrap = function () {
+-    return new LngLat(wrap(this.lng, -180, 180), this.lat);
++mat2.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
+ };
+ 
+ /**
+- * Return a `LngLat` as an array
++ * Creates a new mat2 initialized with values from an existing matrix
+  *
+- * @returns {array} [lng, lat]
+- * @example
+- * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
+- * ll.toArray(); // = [-73.9749, 40.7736]
++ * @param {mat2} a matrix to clone
++ * @returns {mat2} a new 2x2 matrix
+  */
+-LngLat.prototype.toArray = function () {
+-    return [this.lng, this.lat];
++mat2.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
+ };
+ 
+ /**
+- * Return a `LngLat` as a string
++ * Copy the values from one mat2 to another
+  *
+- * @returns {string} "LngLat(lng, lat)"
+- * @example
+- * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
+- * ll.toString(); // = "LngLat(-73.9749, 40.7736)"
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
+  */
+-LngLat.prototype.toString = function () {
+-    return 'LngLat(' + this.lng + ', ' + this.lat + ')';
++mat2.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
+ };
+ 
+ /**
+- * Convert an array to a `LngLat` object, or return an existing `LngLat` object
+- * unchanged.
++ * Set a mat2 to the identity matrix
+  *
+- * @param {Array<number>|LngLat} input `input` to convert
+- * @returns {LngLat} LngLat object or original input
+- * @example
+- * var arr = [-73.9749, 40.7736];
+- * var ll = mapboxgl.LngLat.convert(arr);
+- * ll;   // = LngLat {lng: -73.9749, lat: 40.7736}
++ * @param {mat2} out the receiving matrix
++ * @returns {mat2} out
+  */
+-LngLat.convert = function (input) {
+-    if (input instanceof LngLat) {
+-        return input;
+-    }
+-    if (Array.isArray(input)) {
+-        return new LngLat(input[0], input[1]);
+-    }
+-    return input;
++mat2.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
+ };
+ 
+-},{"../util/util":119}],27:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = LngLatBounds;
+-
+-var LngLat = require('./lng_lat');
+-
+ /**
+- * Creates a bounding box from the given pair of points. If parameteres are omitted, a `null` bounding box is created.
++ * Create a new mat2 with the given values
+  *
+- * @class LngLatBounds
+- * @classdesc A representation of rectangular box on the earth, defined by its southwest and northeast points in longitude and latitude.
+- * @param {LngLat} sw southwest
+- * @param {LngLat} ne northeast
+- * @example
+- * var sw = new mapboxgl.LngLat(-73.9876, 40.7661);
+- * var ne = new mapboxgl.LngLat(-73.9397, 40.8002);
+- * var llb = new mapboxgl.LngLatBounds(sw, ne);
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m10 Component in column 1, row 0 position (index 2)
++ * @param {Number} m11 Component in column 1, row 1 position (index 3)
++ * @returns {mat2} out A new 2x2 matrix
+  */
+-function LngLatBounds(sw, ne) {
+-    if (!sw) {
+-        return;
+-    } else if (ne) {
+-        this.extend(sw).extend(ne);
+-    } else if (sw.length === 4) {
+-        this.extend([sw[0], sw[1]]).extend([sw[2], sw[3]]);
+-    } else {
+-        this.extend(sw[0]).extend(sw[1]);
+-    }
+-}
+-
+-LngLatBounds.prototype = {
+-
+-    /**
+-     * Extend the bounds to include a given LngLat or LngLatBounds.
+-     *
+-     * @param {LngLat|LngLatBounds} obj object to extend to
+-     * @returns {LngLatBounds} `this`
+-     */
+-    extend: function(obj) {
+-        var sw = this._sw,
+-            ne = this._ne,
+-            sw2, ne2;
+-
+-        if (obj instanceof LngLat) {
+-            sw2 = obj;
+-            ne2 = obj;
++mat2.fromValues = function(m00, m01, m10, m11) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m10;
++    out[3] = m11;
++    return out;
++};
+ 
+-        } else if (obj instanceof LngLatBounds) {
+-            sw2 = obj._sw;
+-            ne2 = obj._ne;
++/**
++ * Set the components of a mat2 to the given values
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m10 Component in column 1, row 0 position (index 2)
++ * @param {Number} m11 Component in column 1, row 1 position (index 3)
++ * @returns {mat2} out
++ */
++mat2.set = function(out, m00, m01, m10, m11) {
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m10;
++    out[3] = m11;
++    return out;
++};
+ 
+-            if (!sw2 || !ne2) return this;
+ 
+-        } else {
+-            return obj ? this.extend(LngLat.convert(obj) || LngLatBounds.convert(obj)) : this;
+-        }
++/**
++ * Transpose the values of a mat2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++mat2.transpose = function(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a1 = a[1];
++        out[1] = a[2];
++        out[2] = a1;
++    } else {
++        out[0] = a[0];
++        out[1] = a[2];
++        out[2] = a[1];
++        out[3] = a[3];
++    }
++    
++    return out;
++};
+ 
+-        if (!sw && !ne) {
+-            this._sw = new LngLat(sw2.lng, sw2.lat);
+-            this._ne = new LngLat(ne2.lng, ne2.lat);
++/**
++ * Inverts a mat2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++mat2.invert = function(out, a) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+ 
+-        } else {
+-            sw.lng = Math.min(sw2.lng, sw.lng);
+-            sw.lat = Math.min(sw2.lat, sw.lat);
+-            ne.lng = Math.max(ne2.lng, ne.lng);
+-            ne.lat = Math.max(ne2.lat, ne.lat);
+-        }
++        // Calculate the determinant
++        det = a0 * a3 - a2 * a1;
+ 
+-        return this;
+-    },
++    if (!det) {
++        return null;
++    }
++    det = 1.0 / det;
++    
++    out[0] =  a3 * det;
++    out[1] = -a1 * det;
++    out[2] = -a2 * det;
++    out[3] =  a0 * det;
+ 
+-    /**
+-     * Get the point equidistant from this box's corners
+-     * @returns {LngLat} centerpoint
+-     * @example
+-     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
+-     * llb.getCenter(); // = LngLat {lng: -73.96365, lat: 40.78315}
+-     */
+-    getCenter: function() {
+-        return new LngLat((this._sw.lng + this._ne.lng) / 2, (this._sw.lat + this._ne.lat) / 2);
+-    },
++    return out;
++};
+ 
+-    /**
+-     * Get southwest corner
+-     * @returns {LngLat} southwest
+-     */
+-    getSouthWest: function() { return this._sw; },
++/**
++ * Calculates the adjugate of a mat2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++mat2.adjoint = function(out, a) {
++    // Caching this value is nessecary if out == a
++    var a0 = a[0];
++    out[0] =  a[3];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    out[3] =  a0;
+ 
+-    /**
+-     * Get northeast corner
+-     * @returns {LngLat} northeast
+-     */
+-    getNorthEast: function() { return this._ne; },
++    return out;
++};
+ 
+-    /**
+-     * Get northwest corner
+-     * @returns {LngLat} northwest
+-     */
+-    getNorthWest: function() { return new LngLat(this.getWest(), this.getNorth()); },
++/**
++ * Calculates the determinant of a mat2
++ *
++ * @param {mat2} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat2.determinant = function (a) {
++    return a[0] * a[3] - a[2] * a[1];
++};
+ 
+-    /**
+-     * Get southeast corner
+-     * @returns {LngLat} southeast
+-     */
+-    getSouthEast: function() { return new LngLat(this.getEast(), this.getSouth()); },
++/**
++ * Multiplies two mat2's
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @returns {mat2} out
++ */
++mat2.multiply = function (out, a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    out[0] = a0 * b0 + a2 * b1;
++    out[1] = a1 * b0 + a3 * b1;
++    out[2] = a0 * b2 + a2 * b3;
++    out[3] = a1 * b2 + a3 * b3;
++    return out;
++};
+ 
+-    /**
+-     * Get west edge longitude
+-     * @returns {number} west
+-     */
+-    getWest:  function() { return this._sw.lng; },
++/**
++ * Alias for {@link mat2.multiply}
++ * @function
++ */
++mat2.mul = mat2.multiply;
+ 
+-    /**
+-     * Get south edge latitude
+-     * @returns {number} south
+-     */
+-    getSouth: function() { return this._sw.lat; },
++/**
++ * Rotates a mat2 by the given angle
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2} out
++ */
++mat2.rotate = function (out, a, rad) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++        s = Math.sin(rad),
++        c = Math.cos(rad);
++    out[0] = a0 *  c + a2 * s;
++    out[1] = a1 *  c + a3 * s;
++    out[2] = a0 * -s + a2 * c;
++    out[3] = a1 * -s + a3 * c;
++    return out;
++};
+ 
+-    /**
+-     * Get east edge longitude
+-     * @returns {number} east
+-     */
+-    getEast:  function() { return this._ne.lng; },
++/**
++ * Scales the mat2 by the dimensions in the given vec2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the matrix to rotate
++ * @param {vec2} v the vec2 to scale the matrix by
++ * @returns {mat2} out
++ **/
++mat2.scale = function(out, a, v) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++        v0 = v[0], v1 = v[1];
++    out[0] = a0 * v0;
++    out[1] = a1 * v0;
++    out[2] = a2 * v1;
++    out[3] = a3 * v1;
++    return out;
++};
+ 
+-    /**
+-     * Get north edge latitude
+-     * @returns {number} north
+-     */
+-    getNorth: function() { return this._ne.lat; },
++/**
++ * Creates a matrix from a given angle
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2.identity(dest);
++ *     mat2.rotate(dest, dest, rad);
++ *
++ * @param {mat2} out mat2 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2} out
++ */
++mat2.fromRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
++    out[0] = c;
++    out[1] = s;
++    out[2] = -s;
++    out[3] = c;
++    return out;
++}
+ 
+-    /**
+-     * Return a `LngLatBounds` as an array
+-     *
+-     * @returns {array} [lng, lat]
+-     * @example
+-     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
+-     * llb.toArray(); // = [[-73.9876, 40.7661], [-73.9397, 40.8002]]
+-     */
+-    toArray: function () {
+-        return [this._sw.toArray(), this._ne.toArray()];
+-    },
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2.identity(dest);
++ *     mat2.scale(dest, dest, vec);
++ *
++ * @param {mat2} out mat2 receiving operation result
++ * @param {vec2} v Scaling vector
++ * @returns {mat2} out
++ */
++mat2.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = v[1];
++    return out;
++}
+ 
+-    /**
+-     * Return a `LngLatBounds` as a string
+-     *
+-     * @returns {string} "LngLatBounds(LngLat(lng, lat), LngLat(lng, lat))"
+-     * @example
+-     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
+-     * llb.toString(); // = "LngLatBounds(LngLat(-73.9876, 40.7661), LngLat(-73.9397, 40.8002))"
+-     */
+-    toString: function () {
+-        return 'LngLatBounds(' + this._sw.toString() + ', ' + this._ne.toString() + ')';
+-    }
++/**
++ * Returns a string representation of a mat2
++ *
++ * @param {mat2} mat matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat2.str = function (a) {
++    return 'mat2(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+ };
+ 
+ /**
+- * Convert an array to a `LngLatBounds` object, or return an existing
+- * `LngLatBounds` object unchanged.
+- *
+- * Calls `LngLat#convert` internally to convert arrays as `LngLat` values.
++ * Returns Frobenius norm of a mat2
+  *
+- * @param {LngLatBounds|Array<number>|Array<Array<number>>} input input to convert to a LngLatBounds
+- * @returns {LngLatBounds} LngLatBounds object or original input
+- * @example
+- * var arr = [[-73.9876, 40.7661], [-73.9397, 40.8002]];
+- * var llb = mapboxgl.LngLatBounds.convert(arr);
+- * llb;   // = LngLatBounds {_sw: LngLat {lng: -73.9876, lat: 40.7661}, _ne: LngLat {lng: -73.9397, lat: 40.8002}}
++ * @param {mat2} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
+  */
+-LngLatBounds.convert = function (input) {
+-    if (!input || input instanceof LngLatBounds) return input;
+-    return new LngLatBounds(input);
++mat2.frob = function (a) {
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2)))
+ };
+ 
+-},{"./lng_lat":26}],28:[function(require,module,exports){
+-'use strict';
++/**
++ * Returns L, D and U matrices (Lower triangular, Diagonal and Upper triangular) by factorizing the input matrix
++ * @param {mat2} L the lower triangular matrix 
++ * @param {mat2} D the diagonal matrix 
++ * @param {mat2} U the upper triangular matrix 
++ * @param {mat2} a the input matrix to factorize
++ */
+ 
+-var LngLat = require('./lng_lat'),
+-    Point = require('point-geometry'),
+-    Coordinate = require('./coordinate'),
+-    wrap = require('../util/util').wrap,
+-    interp = require('../util/interpolate'),
+-    TileCoord = require('../source/tile_coord'),
+-    EXTENT = require('../data/bucket').EXTENT,
+-    glmatrix = require('gl-matrix');
++mat2.LDU = function (L, D, U, a) { 
++    L[2] = a[2]/a[0]; 
++    U[0] = a[0]; 
++    U[1] = a[1]; 
++    U[3] = a[3] - L[2] * U[1]; 
++    return [L, D, U];       
++}; 
+ 
+-var vec4 = glmatrix.vec4,
+-    mat4 = glmatrix.mat4,
+-    mat2 = glmatrix.mat2;
++/**
++ * Adds two mat2's
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @returns {mat2} out
++ */
++mat2.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    return out;
++};
+ 
+-module.exports = Transform;
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @returns {mat2} out
++ */
++mat2.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    return out;
++};
+ 
+ /**
+- * A single transform, generally used for a single tile to be
+- * scaled, rotated, and zoomed.
++ * Alias for {@link mat2.subtract}
++ * @function
++ */
++mat2.sub = mat2.subtract;
++
++/**
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
+  *
+- * @param {number} minZoom
+- * @param {number} maxZoom
+- * @private
++ * @param {mat2} a The first matrix.
++ * @param {mat2} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
+  */
+-function Transform(minZoom, maxZoom) {
+-    this.tileSize = 512; // constant
++mat2.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
++};
+ 
+-    this._minZoom = minZoom || 0;
+-    this._maxZoom = maxZoom || 22;
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat2} a The first matrix.
++ * @param {mat2} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat2.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
++};
+ 
+-    this.latRange = [-85.05113, 85.05113];
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat2} out
++ */
++mat2.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    return out;
++};
+ 
+-    this.width = 0;
+-    this.height = 0;
+-    this._center = new LngLat(0, 0);
+-    this.zoom = 0;
+-    this.angle = 0;
+-    this._altitude = 1.5;
+-    this._pitch = 0;
+-    this._unmodified = true;
+-}
++/**
++ * Adds two mat2's after multiplying each element of the second operand by a scalar value.
++ *
++ * @param {mat2} out the receiving vector
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat2} out
++ */
++mat2.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    return out;
++};
+ 
+-Transform.prototype = {
+-    get minZoom() { return this._minZoom; },
+-    set minZoom(zoom) {
+-        if (this._minZoom === zoom) return;
+-        this._minZoom = zoom;
+-        this.zoom = Math.max(this.zoom, zoom);
+-    },
++module.exports = mat2;
+ 
+-    get maxZoom() { return this._maxZoom; },
+-    set maxZoom(zoom) {
+-        if (this._maxZoom === zoom) return;
+-        this._maxZoom = zoom;
+-        this.zoom = Math.min(this.zoom, zoom);
+-    },
++},{"./common.js":25}],27:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-    get worldSize() {
+-        return this.tileSize * this.scale;
+-    },
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-    get centerPoint() {
+-        return this.size._div(2);
+-    },
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-    get size() {
+-        return new Point(this.width, this.height);
+-    },
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-    get bearing() {
+-        return -this.angle / Math.PI * 180;
+-    },
+-    set bearing(bearing) {
+-        var b = -wrap(bearing, -180, 180) * Math.PI / 180;
+-        if (this.angle === b) return;
+-        this._unmodified = false;
+-        this.angle = b;
+-        this._calcProjMatrix();
++var glMatrix = require("./common.js");
+ 
+-        // 2x2 matrix for rotating points
+-        this.rotationMatrix = mat2.create();
+-        mat2.rotate(this.rotationMatrix, this.rotationMatrix, this.angle);
+-    },
++/**
++ * @class 2x3 Matrix
++ * @name mat2d
++ * 
++ * @description 
++ * A mat2d contains six elements defined as:
++ * <pre>
++ * [a, c, tx,
++ *  b, d, ty]
++ * </pre>
++ * This is a short form for the 3x3 matrix:
++ * <pre>
++ * [a, c, tx,
++ *  b, d, ty,
++ *  0, 0, 1]
++ * </pre>
++ * The last row is ignored so the array is shorter and operations are faster.
++ */
++var mat2d = {};
+ 
+-    get pitch() {
+-        return this._pitch / Math.PI * 180;
+-    },
+-    set pitch(pitch) {
+-        var p = Math.min(60, pitch) / 180 * Math.PI;
+-        if (this._pitch === p) return;
+-        this._unmodified = false;
+-        this._pitch = p;
+-        this._calcProjMatrix();
+-    },
++/**
++ * Creates a new identity mat2d
++ *
++ * @returns {mat2d} a new 2x3 matrix
++ */
++mat2d.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(6);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    out[4] = 0;
++    out[5] = 0;
++    return out;
++};
+ 
+-    get altitude() {
+-        return this._altitude;
+-    },
+-    set altitude(altitude) {
+-        var a = Math.max(0.75, altitude);
+-        if (this._altitude === a) return;
+-        this._unmodified = false;
+-        this._altitude = a;
+-        this._calcProjMatrix();
+-    },
++/**
++ * Creates a new mat2d initialized with values from an existing matrix
++ *
++ * @param {mat2d} a matrix to clone
++ * @returns {mat2d} a new 2x3 matrix
++ */
++mat2d.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(6);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    return out;
++};
+ 
+-    get zoom() { return this._zoom; },
+-    set zoom(zoom) {
+-        var z = Math.min(Math.max(zoom, this.minZoom), this.maxZoom);
+-        if (this._zoom === z) return;
+-        this._unmodified = false;
+-        this._zoom = z;
+-        this.scale = this.zoomScale(z);
+-        this.tileZoom = Math.floor(z);
+-        this.zoomFraction = z - this.tileZoom;
+-        this._calcProjMatrix();
+-        this._constrain();
+-    },
++/**
++ * Copy the values from one mat2d to another
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the source matrix
++ * @returns {mat2d} out
++ */
++mat2d.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    return out;
++};
+ 
+-    get center() { return this._center; },
+-    set center(center) {
+-        if (center.lat === this._center.lat && center.lng === this._center.lng) return;
+-        this._unmodified = false;
+-        this._center = center;
+-        this._calcProjMatrix();
+-        this._constrain();
+-    },
++/**
++ * Set a mat2d to the identity matrix
++ *
++ * @param {mat2d} out the receiving matrix
++ * @returns {mat2d} out
++ */
++mat2d.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    out[4] = 0;
++    out[5] = 0;
++    return out;
++};
+ 
+-    resize: function(width, height) {
+-        this.width = width;
+-        this.height = height;
++/**
++ * Create a new mat2d with the given values
++ *
++ * @param {Number} a Component A (index 0)
++ * @param {Number} b Component B (index 1)
++ * @param {Number} c Component C (index 2)
++ * @param {Number} d Component D (index 3)
++ * @param {Number} tx Component TX (index 4)
++ * @param {Number} ty Component TY (index 5)
++ * @returns {mat2d} A new mat2d
++ */
++mat2d.fromValues = function(a, b, c, d, tx, ty) {
++    var out = new glMatrix.ARRAY_TYPE(6);
++    out[0] = a;
++    out[1] = b;
++    out[2] = c;
++    out[3] = d;
++    out[4] = tx;
++    out[5] = ty;
++    return out;
++};
+ 
+-        this.pixelsToGLUnits = [2 / width, -2 / height];
+-        this._calcProjMatrix();
+-        this._constrain();
+-    },
++/**
++ * Set the components of a mat2d to the given values
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {Number} a Component A (index 0)
++ * @param {Number} b Component B (index 1)
++ * @param {Number} c Component C (index 2)
++ * @param {Number} d Component D (index 3)
++ * @param {Number} tx Component TX (index 4)
++ * @param {Number} ty Component TY (index 5)
++ * @returns {mat2d} out
++ */
++mat2d.set = function(out, a, b, c, d, tx, ty) {
++    out[0] = a;
++    out[1] = b;
++    out[2] = c;
++    out[3] = d;
++    out[4] = tx;
++    out[5] = ty;
++    return out;
++};
+ 
+-    get unmodified() { return this._unmodified; },
++/**
++ * Inverts a mat2d
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the source matrix
++ * @returns {mat2d} out
++ */
++mat2d.invert = function(out, a) {
++    var aa = a[0], ab = a[1], ac = a[2], ad = a[3],
++        atx = a[4], aty = a[5];
+ 
+-    zoomScale: function(zoom) { return Math.pow(2, zoom); },
+-    scaleZoom: function(scale) { return Math.log(scale) / Math.LN2; },
++    var det = aa * ad - ab * ac;
++    if(!det){
++        return null;
++    }
++    det = 1.0 / det;
+ 
+-    project: function(lnglat, worldSize) {
+-        return new Point(
+-            this.lngX(lnglat.lng, worldSize),
+-            this.latY(lnglat.lat, worldSize));
+-    },
++    out[0] = ad * det;
++    out[1] = -ab * det;
++    out[2] = -ac * det;
++    out[3] = aa * det;
++    out[4] = (ac * aty - ad * atx) * det;
++    out[5] = (ab * atx - aa * aty) * det;
++    return out;
++};
+ 
+-    unproject: function(point, worldSize) {
+-        return new LngLat(
+-            this.xLng(point.x, worldSize),
+-            this.yLat(point.y, worldSize));
+-    },
++/**
++ * Calculates the determinant of a mat2d
++ *
++ * @param {mat2d} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat2d.determinant = function (a) {
++    return a[0] * a[3] - a[1] * a[2];
++};
+ 
+-    get x() { return this.lngX(this.center.lng); },
+-    get y() { return this.latY(this.center.lat); },
++/**
++ * Multiplies two mat2d's
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @returns {mat2d} out
++ */
++mat2d.multiply = function (out, a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
++    out[0] = a0 * b0 + a2 * b1;
++    out[1] = a1 * b0 + a3 * b1;
++    out[2] = a0 * b2 + a2 * b3;
++    out[3] = a1 * b2 + a3 * b3;
++    out[4] = a0 * b4 + a2 * b5 + a4;
++    out[5] = a1 * b4 + a3 * b5 + a5;
++    return out;
++};
+ 
+-    get point() { return new Point(this.x, this.y); },
++/**
++ * Alias for {@link mat2d.multiply}
++ * @function
++ */
++mat2d.mul = mat2d.multiply;
+ 
+-    /**
+-     * latitude to absolute x coord
+-     * @param {number} lon
+-     * @param {number} [worldSize=this.worldSize]
+-     * @returns {number} pixel coordinate
+-     * @private
+-     */
+-    lngX: function(lng, worldSize) {
+-        return (180 + lng) * (worldSize || this.worldSize) / 360;
+-    },
+-    /**
+-     * latitude to absolute y coord
+-     * @param {number} lat
+-     * @param {number} [worldSize=this.worldSize]
+-     * @returns {number} pixel coordinate
+-     * @private
+-     */
+-    latY: function(lat, worldSize) {
+-        var y = 180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360));
+-        return (180 - y) * (worldSize || this.worldSize) / 360;
+-    },
++/**
++ * Rotates a mat2d by the given angle
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2d} out
++ */
++mat2d.rotate = function (out, a, rad) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        s = Math.sin(rad),
++        c = Math.cos(rad);
++    out[0] = a0 *  c + a2 * s;
++    out[1] = a1 *  c + a3 * s;
++    out[2] = a0 * -s + a2 * c;
++    out[3] = a1 * -s + a3 * c;
++    out[4] = a4;
++    out[5] = a5;
++    return out;
++};
+ 
+-    xLng: function(x, worldSize) {
+-        return x * 360 / (worldSize || this.worldSize) - 180;
+-    },
+-    yLat: function(y, worldSize) {
+-        var y2 = 180 - y * 360 / (worldSize || this.worldSize);
+-        return 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90;
+-    },
++/**
++ * Scales the mat2d by the dimensions in the given vec2
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to translate
++ * @param {vec2} v the vec2 to scale the matrix by
++ * @returns {mat2d} out
++ **/
++mat2d.scale = function(out, a, v) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        v0 = v[0], v1 = v[1];
++    out[0] = a0 * v0;
++    out[1] = a1 * v0;
++    out[2] = a2 * v1;
++    out[3] = a3 * v1;
++    out[4] = a4;
++    out[5] = a5;
++    return out;
++};
+ 
+-    panBy: function(offset) {
+-        var point = this.centerPoint._add(offset);
+-        this.center = this.pointLocation(point);
+-    },
++/**
++ * Translates the mat2d by the dimensions in the given vec2
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to translate
++ * @param {vec2} v the vec2 to translate the matrix by
++ * @returns {mat2d} out
++ **/
++mat2d.translate = function(out, a, v) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        v0 = v[0], v1 = v[1];
++    out[0] = a0;
++    out[1] = a1;
++    out[2] = a2;
++    out[3] = a3;
++    out[4] = a0 * v0 + a2 * v1 + a4;
++    out[5] = a1 * v0 + a3 * v1 + a5;
++    return out;
++};
+ 
+-    setLocationAtPoint: function(lnglat, point) {
+-        var c = this.locationCoordinate(lnglat);
+-        var coordAtPoint = this.pointCoordinate(point);
+-        var coordCenter = this.pointCoordinate(this.centerPoint);
+-        var translate = coordAtPoint._sub(c);
+-        this._unmodified = false;
+-        this.center = this.coordinateLocation(coordCenter._sub(translate));
+-    },
++/**
++ * Creates a matrix from a given angle
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2d.identity(dest);
++ *     mat2d.rotate(dest, dest, rad);
++ *
++ * @param {mat2d} out mat2d receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2d} out
++ */
++mat2d.fromRotation = function(out, rad) {
++    var s = Math.sin(rad), c = Math.cos(rad);
++    out[0] = c;
++    out[1] = s;
++    out[2] = -s;
++    out[3] = c;
++    out[4] = 0;
++    out[5] = 0;
++    return out;
++}
+ 
+-    /**
+-     * Given a location, return the screen point that corresponds to it
+-     * @param {LngLat} lnglat location
+-     * @returns {Point} screen point
+-     * @private
+-     */
+-    locationPoint: function(lnglat) {
+-        return this.coordinatePoint(this.locationCoordinate(lnglat));
+-    },
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2d.identity(dest);
++ *     mat2d.scale(dest, dest, vec);
++ *
++ * @param {mat2d} out mat2d receiving operation result
++ * @param {vec2} v Scaling vector
++ * @returns {mat2d} out
++ */
++mat2d.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = v[1];
++    out[4] = 0;
++    out[5] = 0;
++    return out;
++}
+ 
+-    /**
+-     * Given a point on screen, return its lnglat
+-     * @param {Point} p screen point
+-     * @returns {LngLat} lnglat location
+-     * @private
+-     */
+-    pointLocation: function(p) {
+-        return this.coordinateLocation(this.pointCoordinate(p));
+-    },
++/**
++ * Creates a matrix from a vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2d.identity(dest);
++ *     mat2d.translate(dest, dest, vec);
++ *
++ * @param {mat2d} out mat2d receiving operation result
++ * @param {vec2} v Translation vector
++ * @returns {mat2d} out
++ */
++mat2d.fromTranslation = function(out, v) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    out[4] = v[0];
++    out[5] = v[1];
++    return out;
++}
+ 
+-    /**
+-     * Given a geographical lnglat, return an unrounded
+-     * coordinate that represents it at this transform's zoom level and
+-     * worldsize.
+-     * @param {LngLat} lnglat
+-     * @returns {Coordinate}
+-     * @private
+-     */
+-    locationCoordinate: function(lnglat) {
+-        var k = this.zoomScale(this.tileZoom) / this.worldSize,
+-            ll = LngLat.convert(lnglat);
++/**
++ * Returns a string representation of a mat2d
++ *
++ * @param {mat2d} a matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat2d.str = function (a) {
++    return 'mat2d(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
++                    a[3] + ', ' + a[4] + ', ' + a[5] + ')';
++};
+ 
+-        return new Coordinate(
+-            this.lngX(ll.lng) * k,
+-            this.latY(ll.lat) * k,
+-            this.tileZoom);
+-    },
++/**
++ * Returns Frobenius norm of a mat2d
++ *
++ * @param {mat2d} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
++ */
++mat2d.frob = function (a) { 
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + 1))
++}; 
+ 
+-    /**
+-     * Given a Coordinate, return its geographical position.
+-     * @param {Coordinate} coord
+-     * @returns {LngLat} lnglat
+-     * @private
+-     */
+-    coordinateLocation: function(coord) {
+-        var worldSize = this.zoomScale(coord.zoom);
+-        return new LngLat(
+-            this.xLng(coord.column, worldSize),
+-            this.yLat(coord.row, worldSize));
+-    },
++/**
++ * Adds two mat2d's
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @returns {mat2d} out
++ */
++mat2d.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    out[4] = a[4] + b[4];
++    out[5] = a[5] + b[5];
++    return out;
++};
+ 
+-    pointCoordinate: function(p) {
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @returns {mat2d} out
++ */
++mat2d.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    out[4] = a[4] - b[4];
++    out[5] = a[5] - b[5];
++    return out;
++};
+ 
+-        var targetZ = 0;
++/**
++ * Alias for {@link mat2d.subtract}
++ * @function
++ */
++mat2d.sub = mat2d.subtract;
+ 
+-        var matrix = this.coordinatePointMatrix(this.tileZoom);
+-        mat4.invert(matrix, matrix);
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat2d} out
++ */
++mat2d.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    out[4] = a[4] * b;
++    out[5] = a[5] * b;
++    return out;
++};
+ 
+-        if (!matrix) throw new Error("failed to invert matrix");
++/**
++ * Adds two mat2d's after multiplying each element of the second operand by a scalar value.
++ *
++ * @param {mat2d} out the receiving vector
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat2d} out
++ */
++mat2d.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    out[4] = a[4] + (b[4] * scale);
++    out[5] = a[5] + (b[5] * scale);
++    return out;
++};
+ 
+-        // since we don't know the correct projected z value for the point,
+-        // unproject two points to get a line and then find the point on that
+-        // line with z=0
++/**
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {mat2d} a The first matrix.
++ * @param {mat2d} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat2d.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5];
++};
+ 
+-        var coord0 = [p.x, p.y, 0, 1];
+-        var coord1 = [p.x, p.y, 1, 1];
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat2d} a The first matrix.
++ * @param {mat2d} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat2d.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
++            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
++            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)));
++};
+ 
+-        vec4.transformMat4(coord0, coord0, matrix);
+-        vec4.transformMat4(coord1, coord1, matrix);
++module.exports = mat2d;
+ 
+-        var w0 = coord0[3];
+-        var w1 = coord1[3];
+-        var x0 = coord0[0] / w0;
+-        var x1 = coord1[0] / w1;
+-        var y0 = coord0[1] / w0;
+-        var y1 = coord1[1] / w1;
+-        var z0 = coord0[2] / w0;
+-        var z1 = coord1[2] / w1;
++},{"./common.js":25}],28:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-        var t = z0 === z1 ? 0 : (targetZ - z0) / (z1 - z0);
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-        return new Coordinate(
+-            interp(x0, x1, t),
+-            interp(y0, y1, t),
+-            this.tileZoom);
+-    },
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-    /**
+-     * Given a coordinate, return the screen point that corresponds to it
+-     * @param {Coordinate} coord
+-     * @returns {Point} screen point
+-     * @private
+-     */
+-    coordinatePoint: function(coord) {
+-        var matrix = this.coordinatePointMatrix(coord.zoom);
+-        var p = [coord.column, coord.row, 0, 1];
+-        vec4.transformMat4(p, p, matrix);
+-        return new Point(p[0] / p[3], p[1] / p[3]);
+-    },
++var glMatrix = require("./common.js");
+ 
+-    coordinatePointMatrix: function(z) {
+-        var proj = mat4.copy(new Float64Array(16), this.projMatrix);
+-        var scale = this.worldSize / this.zoomScale(z);
+-        mat4.scale(proj, proj, [scale, scale, 1]);
+-        mat4.multiply(proj, this.getPixelMatrix(), proj);
+-        return proj;
+-    },
++/**
++ * @class 3x3 Matrix
++ * @name mat3
++ */
++var mat3 = {};
+ 
+-    /**
+-     * converts gl coordinates -1..1 to pixels 0..width
+-     * @returns {Object} matrix
+-     * @private
+-     */
+-    getPixelMatrix: function() {
+-        var m = mat4.create();
+-        mat4.scale(m, m, [this.width / 2, -this.height / 2, 1]);
+-        mat4.translate(m, m, [1, -1, 0]);
+-        return m;
+-    },
++/**
++ * Creates a new identity mat3
++ *
++ * @returns {mat3} a new 3x3 matrix
++ */
++mat3.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(9);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 1;
++    out[5] = 0;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
++};
+ 
+-    /**
+-     * Calculate the posMatrix that, given a tile coordinate, would be used to display the tile on a map.
+-     * @param {TileCoord|Coordinate} coord
+-     * @param {Number} maxZoom maximum source zoom to account for overscaling
+-     * @private
+-     */
+-    calculatePosMatrix: function(coord, maxZoom) {
+-        if (maxZoom === undefined) maxZoom = Infinity;
+-        if (coord instanceof TileCoord) coord = coord.toCoordinate(maxZoom);
++/**
++ * Copies the upper-left 3x3 values into the given mat3.
++ *
++ * @param {mat3} out the receiving 3x3 matrix
++ * @param {mat4} a   the source 4x4 matrix
++ * @returns {mat3} out
++ */
++mat3.fromMat4 = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[4];
++    out[4] = a[5];
++    out[5] = a[6];
++    out[6] = a[8];
++    out[7] = a[9];
++    out[8] = a[10];
++    return out;
++};
+ 
+-        // Initialize model-view matrix that converts from the tile coordinates to screen coordinates.
++/**
++ * Creates a new mat3 initialized with values from an existing matrix
++ *
++ * @param {mat3} a matrix to clone
++ * @returns {mat3} a new 3x3 matrix
++ */
++mat3.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(9);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    return out;
++};
+ 
+-        // if z > maxzoom then the tile is actually a overscaled maxzoom tile,
+-        // so calculate the matrix the maxzoom tile would use.
+-        var z = Math.min(coord.zoom, maxZoom);
++/**
++ * Copy the values from one mat3 to another
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    return out;
++};
+ 
+-        var scale = this.worldSize / Math.pow(2, z);
+-        var posMatrix = new Float64Array(16);
++/**
++ * Create a new mat3 with the given values
++ *
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m10 Component in column 1, row 0 position (index 3)
++ * @param {Number} m11 Component in column 1, row 1 position (index 4)
++ * @param {Number} m12 Component in column 1, row 2 position (index 5)
++ * @param {Number} m20 Component in column 2, row 0 position (index 6)
++ * @param {Number} m21 Component in column 2, row 1 position (index 7)
++ * @param {Number} m22 Component in column 2, row 2 position (index 8)
++ * @returns {mat3} A new mat3
++ */
++mat3.fromValues = function(m00, m01, m02, m10, m11, m12, m20, m21, m22) {
++    var out = new glMatrix.ARRAY_TYPE(9);
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m10;
++    out[4] = m11;
++    out[5] = m12;
++    out[6] = m20;
++    out[7] = m21;
++    out[8] = m22;
++    return out;
++};
+ 
+-        mat4.identity(posMatrix);
+-        mat4.translate(posMatrix, posMatrix, [coord.column * scale, coord.row * scale, 0]);
+-        mat4.scale(posMatrix, posMatrix, [ scale / EXTENT, scale / EXTENT, 1 ]);
+-        mat4.multiply(posMatrix, this.projMatrix, posMatrix);
++/**
++ * Set the components of a mat3 to the given values
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m10 Component in column 1, row 0 position (index 3)
++ * @param {Number} m11 Component in column 1, row 1 position (index 4)
++ * @param {Number} m12 Component in column 1, row 2 position (index 5)
++ * @param {Number} m20 Component in column 2, row 0 position (index 6)
++ * @param {Number} m21 Component in column 2, row 1 position (index 7)
++ * @param {Number} m22 Component in column 2, row 2 position (index 8)
++ * @returns {mat3} out
++ */
++mat3.set = function(out, m00, m01, m02, m10, m11, m12, m20, m21, m22) {
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m10;
++    out[4] = m11;
++    out[5] = m12;
++    out[6] = m20;
++    out[7] = m21;
++    out[8] = m22;
++    return out;
++};
+ 
+-        return new Float32Array(posMatrix);
+-    },
++/**
++ * Set a mat3 to the identity matrix
++ *
++ * @param {mat3} out the receiving matrix
++ * @returns {mat3} out
++ */
++mat3.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 1;
++    out[5] = 0;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
++};
+ 
+-    _constrain: function() {
+-        if (!this.center || !this.width || !this.height || this._constraining) return;
++/**
++ * Transpose the values of a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.transpose = function(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a01 = a[1], a02 = a[2], a12 = a[5];
++        out[1] = a[3];
++        out[2] = a[6];
++        out[3] = a01;
++        out[5] = a[7];
++        out[6] = a02;
++        out[7] = a12;
++    } else {
++        out[0] = a[0];
++        out[1] = a[3];
++        out[2] = a[6];
++        out[3] = a[1];
++        out[4] = a[4];
++        out[5] = a[7];
++        out[6] = a[2];
++        out[7] = a[5];
++        out[8] = a[8];
++    }
++    
++    return out;
++};
+ 
+-        this._constraining = true;
++/**
++ * Inverts a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.invert = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
+ 
+-        var minY, maxY, minX, maxX, sy, sx, x2, y2,
+-            size = this.size,
+-            unmodified = this._unmodified;
++        b01 = a22 * a11 - a12 * a21,
++        b11 = -a22 * a10 + a12 * a20,
++        b21 = a21 * a10 - a11 * a20,
+ 
+-        if (this.latRange) {
+-            minY = this.latY(this.latRange[1]);
+-            maxY = this.latY(this.latRange[0]);
+-            sy = maxY - minY < size.y ? size.y / (maxY - minY) : 0;
+-        }
++        // Calculate the determinant
++        det = a00 * b01 + a01 * b11 + a02 * b21;
+ 
+-        if (this.lngRange) {
+-            minX = this.lngX(this.lngRange[0]);
+-            maxX = this.lngX(this.lngRange[1]);
+-            sx = maxX - minX < size.x ? size.x / (maxX - minX) : 0;
+-        }
++    if (!det) { 
++        return null; 
++    }
++    det = 1.0 / det;
+ 
+-        // how much the map should scale to fit the screen into given latitude/longitude ranges
+-        var s = Math.max(sx || 0, sy || 0);
++    out[0] = b01 * det;
++    out[1] = (-a22 * a01 + a02 * a21) * det;
++    out[2] = (a12 * a01 - a02 * a11) * det;
++    out[3] = b11 * det;
++    out[4] = (a22 * a00 - a02 * a20) * det;
++    out[5] = (-a12 * a00 + a02 * a10) * det;
++    out[6] = b21 * det;
++    out[7] = (-a21 * a00 + a01 * a20) * det;
++    out[8] = (a11 * a00 - a01 * a10) * det;
++    return out;
++};
+ 
+-        if (s) {
+-            this.center = this.unproject(new Point(
+-                sx ? (maxX + minX) / 2 : this.x,
+-                sy ? (maxY + minY) / 2 : this.y));
+-            this.zoom += this.scaleZoom(s);
+-            this._unmodified = unmodified;
+-            this._constraining = false;
+-            return;
+-        }
++/**
++ * Calculates the adjugate of a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.adjoint = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8];
+ 
+-        if (this.latRange) {
+-            var y = this.y,
+-                h2 = size.y / 2;
++    out[0] = (a11 * a22 - a12 * a21);
++    out[1] = (a02 * a21 - a01 * a22);
++    out[2] = (a01 * a12 - a02 * a11);
++    out[3] = (a12 * a20 - a10 * a22);
++    out[4] = (a00 * a22 - a02 * a20);
++    out[5] = (a02 * a10 - a00 * a12);
++    out[6] = (a10 * a21 - a11 * a20);
++    out[7] = (a01 * a20 - a00 * a21);
++    out[8] = (a00 * a11 - a01 * a10);
++    return out;
++};
+ 
+-            if (y - h2 < minY) y2 = minY + h2;
+-            if (y + h2 > maxY) y2 = maxY - h2;
+-        }
++/**
++ * Calculates the determinant of a mat3
++ *
++ * @param {mat3} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat3.determinant = function (a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8];
+ 
+-        if (this.lngRange) {
+-            var x = this.x,
+-                w2 = size.x / 2;
++    return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);
++};
+ 
+-            if (x - w2 < minX) x2 = minX + w2;
+-            if (x + w2 > maxX) x2 = maxX - w2;
+-        }
++/**
++ * Multiplies two mat3's
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @returns {mat3} out
++ */
++mat3.multiply = function (out, a, b) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
+ 
+-        // pan the map if the screen goes off the range
+-        if (x2 !== undefined || y2 !== undefined) {
+-            this.center = this.unproject(new Point(
+-                x2 !== undefined ? x2 : this.x,
+-                y2 !== undefined ? y2 : this.y));
+-        }
++        b00 = b[0], b01 = b[1], b02 = b[2],
++        b10 = b[3], b11 = b[4], b12 = b[5],
++        b20 = b[6], b21 = b[7], b22 = b[8];
+ 
+-        this._unmodified = unmodified;
+-        this._constraining = false;
+-    },
++    out[0] = b00 * a00 + b01 * a10 + b02 * a20;
++    out[1] = b00 * a01 + b01 * a11 + b02 * a21;
++    out[2] = b00 * a02 + b01 * a12 + b02 * a22;
+ 
+-    _calcProjMatrix: function() {
+-        var m = new Float64Array(16);
++    out[3] = b10 * a00 + b11 * a10 + b12 * a20;
++    out[4] = b10 * a01 + b11 * a11 + b12 * a21;
++    out[5] = b10 * a02 + b11 * a12 + b12 * a22;
+ 
+-        // Find the distance from the center point to the center top in altitude units using law of sines.
+-        var halfFov = Math.atan(0.5 / this.altitude);
+-        var topHalfSurfaceDistance = Math.sin(halfFov) * this.altitude / Math.sin(Math.PI / 2 - this._pitch - halfFov);
++    out[6] = b20 * a00 + b21 * a10 + b22 * a20;
++    out[7] = b20 * a01 + b21 * a11 + b22 * a21;
++    out[8] = b20 * a02 + b21 * a12 + b22 * a22;
++    return out;
++};
+ 
+-        // Calculate z value of the farthest fragment that should be rendered.
+-        var farZ = Math.cos(Math.PI / 2 - this._pitch) * topHalfSurfaceDistance + this.altitude;
++/**
++ * Alias for {@link mat3.multiply}
++ * @function
++ */
++mat3.mul = mat3.multiply;
+ 
+-        mat4.perspective(m, 2 * Math.atan((this.height / 2) / this.altitude), this.width / this.height, 0.1, farZ);
++/**
++ * Translate a mat3 by the given vector
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to translate
++ * @param {vec2} v vector to translate by
++ * @returns {mat3} out
++ */
++mat3.translate = function(out, a, v) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
++        x = v[0], y = v[1];
+ 
+-        mat4.translate(m, m, [0, 0, -this.altitude]);
++    out[0] = a00;
++    out[1] = a01;
++    out[2] = a02;
+ 
+-        // After the rotateX, z values are in pixel units. Convert them to
+-        // altitude units. 1 altitude unit = the screen height.
+-        mat4.scale(m, m, [1, -1, 1 / this.height]);
++    out[3] = a10;
++    out[4] = a11;
++    out[5] = a12;
+ 
+-        mat4.rotateX(m, m, this._pitch);
+-        mat4.rotateZ(m, m, this.angle);
+-        mat4.translate(m, m, [-this.x, -this.y, 0]);
+-
+-        this.projMatrix = m;
+-    }
++    out[6] = x * a00 + y * a10 + a20;
++    out[7] = x * a01 + y * a11 + a21;
++    out[8] = x * a02 + y * a12 + a22;
++    return out;
+ };
+ 
+-},{"../data/bucket":17,"../source/tile_coord":51,"../util/interpolate":113,"../util/util":119,"./coordinate":25,"./lng_lat":26,"gl-matrix":133,"point-geometry":174}],29:[function(require,module,exports){
+-'use strict';
++/**
++ * Rotates a mat3 by the given angle
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat3} out
++ */
++mat3.rotate = function (out, a, rad) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
+ 
+-// Font data From Hershey Simplex Font
+-// http://paulbourke.net/dataformats/hershey/
+-var simplexFont = {
+-    " ": [16, []],
+-    "!": [10, [5, 21, 5, 7, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
+-    "\"": [16, [4, 21, 4, 14, -1, -1, 12, 21, 12, 14]],
+-    "#": [21, [11, 25, 4, -7, -1, -1, 17, 25, 10, -7, -1, -1, 4, 12, 18, 12, -1, -1, 3, 6, 17, 6]],
+-    "$": [20, [8, 25, 8, -4, -1, -1, 12, 25, 12, -4, -1, -1, 17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
+-    "%": [24, [21, 21, 3, 0, -1, -1, 8, 21, 10, 19, 10, 17, 9, 15, 7, 14, 5, 14, 3, 16, 3, 18, 4, 20, 6, 21, 8, 21, 10, 20, 13, 19, 16, 19, 19, 20, 21, 21, -1, -1, 17, 7, 15, 6, 14, 4, 14, 2, 16, 0, 18, 0, 20, 1, 21, 3, 21, 5, 19, 7, 17, 7]],
+-    "&": [26, [23, 12, 23, 13, 22, 14, 21, 14, 20, 13, 19, 11, 17, 6, 15, 3, 13, 1, 11, 0, 7, 0, 5, 1, 4, 2, 3, 4, 3, 6, 4, 8, 5, 9, 12, 13, 13, 14, 14, 16, 14, 18, 13, 20, 11, 21, 9, 20, 8, 18, 8, 16, 9, 13, 11, 10, 16, 3, 18, 1, 20, 0, 22, 0, 23, 1, 23, 2]],
+-    "'": [10, [5, 19, 4, 20, 5, 21, 6, 20, 6, 18, 5, 16, 4, 15]],
+-    "(": [14, [11, 25, 9, 23, 7, 20, 5, 16, 4, 11, 4, 7, 5, 2, 7, -2, 9, -5, 11, -7]],
+-    ")": [14, [3, 25, 5, 23, 7, 20, 9, 16, 10, 11, 10, 7, 9, 2, 7, -2, 5, -5, 3, -7]],
+-    "*": [16, [8, 21, 8, 9, -1, -1, 3, 18, 13, 12, -1, -1, 13, 18, 3, 12]],
+-    "+": [26, [13, 18, 13, 0, -1, -1, 4, 9, 22, 9]],
+-    ",": [10, [6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
+-    "-": [26, [4, 9, 22, 9]],
+-    ".": [10, [5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
+-    "/": [22, [20, 25, 2, -7]],
+-    "0": [20, [9, 21, 6, 20, 4, 17, 3, 12, 3, 9, 4, 4, 6, 1, 9, 0, 11, 0, 14, 1, 16, 4, 17, 9, 17, 12, 16, 17, 14, 20, 11, 21, 9, 21]],
+-    "1": [20, [6, 17, 8, 18, 11, 21, 11, 0]],
+-    "2": [20, [4, 16, 4, 17, 5, 19, 6, 20, 8, 21, 12, 21, 14, 20, 15, 19, 16, 17, 16, 15, 15, 13, 13, 10, 3, 0, 17, 0]],
+-    "3": [20, [5, 21, 16, 21, 10, 13, 13, 13, 15, 12, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
+-    "4": [20, [13, 21, 3, 7, 18, 7, -1, -1, 13, 21, 13, 0]],
+-    "5": [20, [15, 21, 5, 21, 4, 12, 5, 13, 8, 14, 11, 14, 14, 13, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
+-    "6": [20, [16, 18, 15, 20, 12, 21, 10, 21, 7, 20, 5, 17, 4, 12, 4, 7, 5, 3, 7, 1, 10, 0, 11, 0, 14, 1, 16, 3, 17, 6, 17, 7, 16, 10, 14, 12, 11, 13, 10, 13, 7, 12, 5, 10, 4, 7]],
+-    "7": [20, [17, 21, 7, 0, -1, -1, 3, 21, 17, 21]],
+-    "8": [20, [8, 21, 5, 20, 4, 18, 4, 16, 5, 14, 7, 13, 11, 12, 14, 11, 16, 9, 17, 7, 17, 4, 16, 2, 15, 1, 12, 0, 8, 0, 5, 1, 4, 2, 3, 4, 3, 7, 4, 9, 6, 11, 9, 12, 13, 13, 15, 14, 16, 16, 16, 18, 15, 20, 12, 21, 8, 21]],
+-    "9": [20, [16, 14, 15, 11, 13, 9, 10, 8, 9, 8, 6, 9, 4, 11, 3, 14, 3, 15, 4, 18, 6, 20, 9, 21, 10, 21, 13, 20, 15, 18, 16, 14, 16, 9, 15, 4, 13, 1, 10, 0, 8, 0, 5, 1, 4, 3]],
+-    ":": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
+-    ";": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
+-    "<": [24, [20, 18, 4, 9, 20, 0]],
+-    "=": [26, [4, 12, 22, 12, -1, -1, 4, 6, 22, 6]],
+-    ">": [24, [4, 18, 20, 9, 4, 0]],
+-    "?": [18, [3, 16, 3, 17, 4, 19, 5, 20, 7, 21, 11, 21, 13, 20, 14, 19, 15, 17, 15, 15, 14, 13, 13, 12, 9, 10, 9, 7, -1, -1, 9, 2, 8, 1, 9, 0, 10, 1, 9, 2]],
+-    "@": [27, [18, 13, 17, 15, 15, 16, 12, 16, 10, 15, 9, 14, 8, 11, 8, 8, 9, 6, 11, 5, 14, 5, 16, 6, 17, 8, -1, -1, 12, 16, 10, 14, 9, 11, 9, 8, 10, 6, 11, 5, -1, -1, 18, 16, 17, 8, 17, 6, 19, 5, 21, 5, 23, 7, 24, 10, 24, 12, 23, 15, 22, 17, 20, 19, 18, 20, 15, 21, 12, 21, 9, 20, 7, 19, 5, 17, 4, 15, 3, 12, 3, 9, 4, 6, 5, 4, 7, 2, 9, 1, 12, 0, 15, 0, 18, 1, 20, 2, 21, 3, -1, -1, 19, 16, 18, 8, 18, 6, 19, 5]],
+-    "A": [18, [9, 21, 1, 0, -1, -1, 9, 21, 17, 0, -1, -1, 4, 7, 14, 7]],
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+-    "C": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5]],
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+-    "G": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 18, 8, -1, -1, 13, 8, 18, 8]],
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+-    "I": [8, [4, 21, 4, 0]],
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+-    "L": [17, [4, 21, 4, 0, -1, -1, 4, 0, 16, 0]],
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+-    "O": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21]],
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+-    "U": [22, [4, 21, 4, 6, 5, 3, 7, 1, 10, 0, 12, 0, 15, 1, 17, 3, 18, 6, 18, 21]],
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+-    "X": [20, [3, 21, 17, 0, -1, -1, 17, 21, 3, 0]],
+-    "Y": [18, [1, 21, 9, 11, 9, 0, -1, -1, 17, 21, 9, 11]],
+-    "Z": [20, [17, 21, 3, 0, -1, -1, 3, 21, 17, 21, -1, -1, 3, 0, 17, 0]],
+-    "[": [14, [4, 25, 4, -7, -1, -1, 5, 25, 5, -7, -1, -1, 4, 25, 11, 25, -1, -1, 4, -7, 11, -7]],
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+-    "]": [14, [9, 25, 9, -7, -1, -1, 10, 25, 10, -7, -1, -1, 3, 25, 10, 25, -1, -1, 3, -7, 10, -7]],
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+-    "_": [16, [0, -2, 16, -2]],
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+-    "w": [22, [3, 14, 7, 0, -1, -1, 11, 14, 7, 0, -1, -1, 11, 14, 15, 0, -1, -1, 19, 14, 15, 0]],
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+-    "y": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0, 6, -4, 4, -6, 2, -7, 1, -7]],
+-    "z": [17, [14, 14, 3, 0, -1, -1, 3, 14, 14, 14, -1, -1, 3, 0, 14, 0]],
+-    "{": [14, [9, 25, 7, 24, 6, 23, 5, 21, 5, 19, 6, 17, 7, 16, 8, 14, 8, 12, 6, 10, -1, -1, 7, 24, 6, 22, 6, 20, 7, 18, 8, 17, 9, 15, 9, 13, 8, 11, 4, 9, 8, 7, 9, 5, 9, 3, 8, 1, 7, 0, 6, -2, 6, -4, 7, -6, -1, -1, 6, 8, 8, 6, 8, 4, 7, 2, 6, 1, 5, -1, 5, -3, 6, -5, 7, -6, 9, -7]],
+-    "|": [8, [4, 25, 4, -7]],
+-    "}": [14, [5, 25, 7, 24, 8, 23, 9, 21, 9, 19, 8, 17, 7, 16, 6, 14, 6, 12, 8, 10, -1, -1, 7, 24, 8, 22, 8, 20, 7, 18, 6, 17, 5, 15, 5, 13, 6, 11, 10, 9, 6, 7, 5, 5, 5, 3, 6, 1, 7, 0, 8, -2, 8, -4, 7, -6, -1, -1, 8, 8, 6, 6, 6, 4, 7, 2, 8, 1, 9, -1, 9, -3, 8, -5, 7, -6, 5, -7]],
+-    "~": [24, [3, 6, 3, 8, 4, 11, 6, 12, 8, 12, 10, 11, 14, 8, 16, 7, 18, 7, 20, 8, 21, 10, -1, -1, 3, 8, 4, 10, 6, 11, 8, 11, 10, 10, 14, 7, 16, 6, 18, 6, 20, 7, 21, 10, 21, 12]]
+-};
++        s = Math.sin(rad),
++        c = Math.cos(rad);
+ 
+-module.exports = function textVertices(text, left, baseline, scale) {
+-    scale = scale || 1;
++    out[0] = c * a00 + s * a10;
++    out[1] = c * a01 + s * a11;
++    out[2] = c * a02 + s * a12;
+ 
+-    var strokes = [],
+-        i, len, j, len2, glyph, x, y, prev;
++    out[3] = c * a10 - s * a00;
++    out[4] = c * a11 - s * a01;
++    out[5] = c * a12 - s * a02;
+ 
+-    for (i = 0, len = text.length; i < len; i++) {
+-        glyph = simplexFont[text[i]];
+-        if (!glyph) continue;
+-        prev = null;
++    out[6] = a20;
++    out[7] = a21;
++    out[8] = a22;
++    return out;
++};
+ 
+-        for (j = 0, len2 = glyph[1].length; j < len2; j += 2) {
+-            if (glyph[1][j] === -1 && glyph[1][j + 1] === -1) {
+-                prev = null;
++/**
++ * Scales the mat3 by the dimensions in the given vec2
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to rotate
++ * @param {vec2} v the vec2 to scale the matrix by
++ * @returns {mat3} out
++ **/
++mat3.scale = function(out, a, v) {
++    var x = v[0], y = v[1];
+ 
+-            } else {
+-                x = left + glyph[1][j] * scale;
+-                y = baseline - glyph[1][j + 1] * scale;
+-                if (prev) {
+-                    strokes.push(prev.x, prev.y, x, y);
+-                }
+-                prev = {x: x, y: y};
+-            }
+-        }
+-        left += glyph[0] * scale;
+-    }
++    out[0] = x * a[0];
++    out[1] = x * a[1];
++    out[2] = x * a[2];
+ 
+-    return strokes;
+-};
++    out[3] = y * a[3];
++    out[4] = y * a[4];
++    out[5] = y * a[5];
+ 
+-},{}],30:[function(require,module,exports){
+-'use strict';
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    return out;
++};
+ 
+ /**
+- * mapboxgl is a A WebGL JavaScript interactive maps library that can render
+- * [Mapbox vector tiles](https://www.mapbox.com/blog/vector-tiles/).
++ * Creates a matrix from a vector translation
++ * This is equivalent to (but much faster than):
+  *
+- * @module mapboxgl
+- * @summary WebGL JavaScript map library
++ *     mat3.identity(dest);
++ *     mat3.translate(dest, dest, vec);
++ *
++ * @param {mat3} out mat3 receiving operation result
++ * @param {vec2} v Translation vector
++ * @returns {mat3} out
+  */
++mat3.fromTranslation = function(out, v) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 1;
++    out[5] = 0;
++    out[6] = v[0];
++    out[7] = v[1];
++    out[8] = 1;
++    return out;
++}
+ 
+-// jshint -W079
+-var mapboxgl = module.exports = {};
+-
+-mapboxgl.Map = require('./ui/map');
+-mapboxgl.Control = require('./ui/control/control');
+-mapboxgl.Navigation = require('./ui/control/navigation');
+-mapboxgl.Geolocate = require('./ui/control/geolocate');
+-mapboxgl.Attribution = require('./ui/control/attribution');
+-mapboxgl.Popup = require('./ui/popup');
+-
+-mapboxgl.GeoJSONSource = require('./source/geojson_source');
+-mapboxgl.VideoSource = require('./source/video_source');
+-mapboxgl.ImageSource = require('./source/image_source');
++/**
++ * Creates a matrix from a given angle
++ * This is equivalent to (but much faster than):
++ *
++ *     mat3.identity(dest);
++ *     mat3.rotate(dest, dest, rad);
++ *
++ * @param {mat3} out mat3 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat3} out
++ */
++mat3.fromRotation = function(out, rad) {
++    var s = Math.sin(rad), c = Math.cos(rad);
+ 
+-mapboxgl.Style = require('./style/style');
++    out[0] = c;
++    out[1] = s;
++    out[2] = 0;
+ 
+-mapboxgl.LngLat = require('./geo/lng_lat');
+-mapboxgl.LngLatBounds = require('./geo/lng_lat_bounds');
+-mapboxgl.Point = require('point-geometry');
++    out[3] = -s;
++    out[4] = c;
++    out[5] = 0;
+ 
+-mapboxgl.Evented = require('./util/evented');
+-mapboxgl.util = require('./util/util');
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
++}
+ 
+-mapboxgl.supported = require('./util/browser').supported;
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat3.identity(dest);
++ *     mat3.scale(dest, dest, vec);
++ *
++ * @param {mat3} out mat3 receiving operation result
++ * @param {vec2} v Scaling vector
++ * @returns {mat3} out
++ */
++mat3.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
+ 
+-var ajax = require('./util/ajax');
+-mapboxgl.util.getJSON = ajax.getJSON;
+-mapboxgl.util.getArrayBuffer = ajax.getArrayBuffer;
++    out[3] = 0;
++    out[4] = v[1];
++    out[5] = 0;
+ 
+-var config = require('./util/config');
+-mapboxgl.config = config;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
++}
+ 
+-Object.defineProperty(mapboxgl, 'accessToken', {
+-    get: function() { return config.ACCESS_TOKEN; },
+-    set: function(token) { config.ACCESS_TOKEN = token; }
+-});
++/**
++ * Copies the values from a mat2d into a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat2d} a the matrix to copy
++ * @returns {mat3} out
++ **/
++mat3.fromMat2d = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = 0;
+ 
+-},{"./geo/lng_lat":26,"./geo/lng_lat_bounds":27,"./source/geojson_source":44,"./source/image_source":46,"./source/video_source":54,"./style/style":60,"./ui/control/attribution":88,"./ui/control/control":89,"./ui/control/geolocate":90,"./ui/control/navigation":91,"./ui/map":101,"./ui/popup":102,"./util/ajax":104,"./util/browser":105,"./util/config":109,"./util/evented":111,"./util/util":119,"point-geometry":174}],31:[function(require,module,exports){
+-'use strict';
++    out[3] = a[2];
++    out[4] = a[3];
++    out[5] = 0;
+ 
+-var TilePyramid = require('../source/tile_pyramid');
+-var pyramid = new TilePyramid({ tileSize: 512 });
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++    out[6] = a[4];
++    out[7] = a[5];
++    out[8] = 1;
++    return out;
++};
+ 
+-module.exports = drawBackground;
++/**
++* Calculates a 3x3 matrix from the given quaternion
++*
++* @param {mat3} out mat3 receiving operation result
++* @param {quat} q Quaternion to create matrix from
++*
++* @returns {mat3} out
++*/
++mat3.fromQuat = function (out, q) {
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-function drawBackground(painter, source, layer) {
+-    var gl = painter.gl;
+-    var transform = painter.transform;
+-    var color = util.premultiply(layer.paint['background-color']);
+-    var image = layer.paint['background-pattern'];
+-    var opacity = layer.paint['background-opacity'];
+-    var program;
++        xx = x * x2,
++        yx = y * x2,
++        yy = y * y2,
++        zx = z * x2,
++        zy = z * y2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-    var imagePosA = image ? painter.spriteAtlas.getPosition(image.from, true) : null;
+-    var imagePosB = image ? painter.spriteAtlas.getPosition(image.to, true) : null;
++    out[0] = 1 - yy - zz;
++    out[3] = yx - wz;
++    out[6] = zx + wy;
+ 
+-    painter.setDepthSublayer(0);
+-    if (imagePosA && imagePosB) {
++    out[1] = yx + wz;
++    out[4] = 1 - xx - zz;
++    out[7] = zy - wx;
+ 
+-        if (painter.isOpaquePass) return;
++    out[2] = zx - wy;
++    out[5] = zy + wx;
++    out[8] = 1 - xx - yy;
+ 
+-        // Draw texture fill
+-        program = painter.useProgram('pattern');
+-        gl.uniform1i(program.u_image, 0);
+-        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
+-        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
+-        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
+-        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
+-        gl.uniform1f(program.u_opacity, opacity);
++    return out;
++};
+ 
+-        gl.uniform1f(program.u_mix, image.t);
++/**
++* Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix
++*
++* @param {mat3} out mat3 receiving operation result
++* @param {mat4} a Mat4 to derive the normal matrix from
++*
++* @returns {mat3} out
++*/
++mat3.normalFromMat4 = function (out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-        painter.spriteAtlas.bind(gl, true);
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32,
+ 
+-        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
+-    } else {
+-        // Draw filling rectangle.
+-        if (painter.isOpaquePass !== (color[3] === 1)) return;
++        // Calculate the determinant
++        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+ 
+-        program = painter.useProgram('fill');
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, opacity);
+-        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
++    if (!det) { 
++        return null; 
+     }
++    det = 1.0 / det;
+ 
+-    gl.disable(gl.STENCIL_TEST);
++    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
++    out[1] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
++    out[2] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+ 
+-    // We need to draw the background in tiles in order to use calculatePosMatrix
+-    // which applies the projection matrix (transform.projMatrix). Otherwise
+-    // the depth and stencil buffers get into a bad state.
+-    // This can be refactored into a single draw call once earcut lands and
+-    // we don't have so much going on in the stencil buffer.
+-    var coords = pyramid.coveringTiles(transform);
+-    for (var c = 0; c < coords.length; c++) {
+-        var coord = coords[c];
+-        var tileSize = 512;
+-        // var pixelsToTileUnitsBound = pixelsToTileUnits.bind({coord:coord, tileSize: tileSize});
+-        if (imagePosA && imagePosB) {
+-            var imageSizeScaledA = [
+-                (imagePosA.size[0] * image.fromScale),
+-                (imagePosA.size[1] * image.fromScale)
+-            ];
+-            var imageSizeScaledB = [
+-                (imagePosB.size[0] * image.toScale),
+-                (imagePosB.size[1] * image.toScale)
+-            ];
+-            var tile = {coord:coord, tileSize: tileSize};
++    out[3] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
++    out[4] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
++    out[5] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+ 
+-            gl.uniform2fv(program.u_patternscale_a, [
+-                1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
+-                1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
+-            ]);
++    out[6] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
++    out[7] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
++    out[8] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+ 
+-            gl.uniform2fv(program.u_patternscale_b, [
+-                1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
+-                1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
+-            ]);
+-            var tileSizeAtNearestZoom = tileSize * Math.pow(2, painter.transform.tileZoom - coord.z);
++    return out;
++};
+ 
+-            var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
+-            var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * coord.y;
++/**
++ * Returns a string representation of a mat3
++ *
++ * @param {mat3} mat matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat3.str = function (a) {
++    return 'mat3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
++                    a[3] + ', ' + a[4] + ', ' + a[5] + ', ' + 
++                    a[6] + ', ' + a[7] + ', ' + a[8] + ')';
++};
+ 
+-            var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
+-            var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * coord.y;
++/**
++ * Returns Frobenius norm of a mat3
++ *
++ * @param {mat3} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
++ */
++mat3.frob = function (a) {
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2)))
++};
+ 
+-            gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
+-            gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
+-        }
++/**
++ * Adds two mat3's
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @returns {mat3} out
++ */
++mat3.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    out[4] = a[4] + b[4];
++    out[5] = a[5] + b[5];
++    out[6] = a[6] + b[6];
++    out[7] = a[7] + b[7];
++    out[8] = a[8] + b[8];
++    return out;
++};
+ 
+-        gl.uniformMatrix4fv(program.u_matrix, false, painter.transform.calculatePosMatrix(coord));
+-        gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
+-    }
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @returns {mat3} out
++ */
++mat3.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    out[4] = a[4] - b[4];
++    out[5] = a[5] - b[5];
++    out[6] = a[6] - b[6];
++    out[7] = a[7] - b[7];
++    out[8] = a[8] - b[8];
++    return out;
++};
+ 
+-    gl.stencilMask(0x00);
+-    gl.stencilFunc(gl.EQUAL, 0x80, 0x80);
+-}
+-
+-},{"../source/pixels_to_tile_units":47,"../source/tile_pyramid":52,"../util/util":119}],32:[function(require,module,exports){
+-'use strict';
+-
+-var browser = require('../util/browser');
++/**
++ * Alias for {@link mat3.subtract}
++ * @function
++ */
++mat3.sub = mat3.subtract;
+ 
+-module.exports = drawCircles;
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat3} out
++ */
++mat3.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    out[4] = a[4] * b;
++    out[5] = a[5] * b;
++    out[6] = a[6] * b;
++    out[7] = a[7] * b;
++    out[8] = a[8] * b;
++    return out;
++};
+ 
+-function drawCircles(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
++/**
++ * Adds two mat3's after multiplying each element of the second operand by a scalar value.
++ *
++ * @param {mat3} out the receiving vector
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat3} out
++ */
++mat3.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    out[4] = a[4] + (b[4] * scale);
++    out[5] = a[5] + (b[5] * scale);
++    out[6] = a[6] + (b[6] * scale);
++    out[7] = a[7] + (b[7] * scale);
++    out[8] = a[8] + (b[8] * scale);
++    return out;
++};
+ 
+-    var gl = painter.gl;
++/*
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {mat3} a The first matrix.
++ * @param {mat3} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat3.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && 
++           a[3] === b[3] && a[4] === b[4] && a[5] === b[5] &&
++           a[6] === b[6] && a[7] === b[7] && a[8] === b[8];
++};
+ 
+-    painter.setDepthSublayer(0);
+-    painter.depthMask(false);
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat3} a The first matrix.
++ * @param {mat3} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat3.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5], a6 = a[6], a7 = a[7], a8 = a[8];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5], b6 = a[6], b7 = b[7], b8 = b[8];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
++            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
++            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
++            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
++            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
++            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)));
++};
+ 
+-    // Allow circles to be drawn across boundaries, so that
+-    // large circles are not clipped to tiles
+-    gl.disable(gl.STENCIL_TEST);
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
++module.exports = mat3;
+ 
+-        var tile = source.getTile(coord);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bufferGroups = bucket.bufferGroups.circle;
+-        if (!bufferGroups) continue;
++},{"./common.js":25}],29:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-        var program = painter.useProgram('circle', bucket.getProgramMacros('circle', layer));
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-        gl.uniform2fv(program.u_extrude_scale, painter.transform.pixelsToGLUnits);
+-        gl.uniform1f(program.u_blur, layer.paint['circle-blur']);
+-        gl.uniform1f(program.u_devicepixelratio, browser.devicePixelRatio);
+-        gl.uniform1f(program.u_opacity, layer.paint['circle-opacity']);
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-        gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
+-            coord.posMatrix,
+-            tile,
+-            layer.paint['circle-translate'],
+-            layer.paint['circle-translate-anchor']
+-        ));
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-        bucket.setUniforms(gl, 'circle', program, layer, {zoom: painter.transform.zoom});
++var glMatrix = require("./common.js");
+ 
+-        for (var k = 0; k < bufferGroups.length; k++) {
+-            var group = bufferGroups[k];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element, group.paint[layer.id]);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-        }
+-    }
+-}
++/**
++ * @class 4x4 Matrix
++ * @name mat4
++ */
++var mat4 = {
++  scalar: {},
++  SIMD: {},
++};
+ 
+-},{"../util/browser":105}],33:[function(require,module,exports){
+-'use strict';
++/**
++ * Creates a new identity mat4
++ *
++ * @returns {mat4} a new 4x4 matrix
++ */
++mat4.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(16);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
+ 
+-module.exports = drawCollisionDebug;
++/**
++ * Creates a new mat4 initialized with values from an existing matrix
++ *
++ * @param {mat4} a matrix to clone
++ * @returns {mat4} a new 4x4 matrix
++ */
++mat4.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(16);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    out[9] = a[9];
++    out[10] = a[10];
++    out[11] = a[11];
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-function drawCollisionDebug(painter, source, layer, coords) {
+-    var gl = painter.gl;
+-    gl.enable(gl.STENCIL_TEST);
+-    var program = painter.useProgram('collisionbox');
++/**
++ * Copy the values from one mat4 to another
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    out[9] = a[9];
++    out[10] = a[10];
++    out[11] = a[11];
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
+-        var tile = source.getTile(coord);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bufferGroups = bucket.bufferGroups.collisionBox;
++/**
++ * Create a new mat4 with the given values
++ *
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m03 Component in column 0, row 3 position (index 3)
++ * @param {Number} m10 Component in column 1, row 0 position (index 4)
++ * @param {Number} m11 Component in column 1, row 1 position (index 5)
++ * @param {Number} m12 Component in column 1, row 2 position (index 6)
++ * @param {Number} m13 Component in column 1, row 3 position (index 7)
++ * @param {Number} m20 Component in column 2, row 0 position (index 8)
++ * @param {Number} m21 Component in column 2, row 1 position (index 9)
++ * @param {Number} m22 Component in column 2, row 2 position (index 10)
++ * @param {Number} m23 Component in column 2, row 3 position (index 11)
++ * @param {Number} m30 Component in column 3, row 0 position (index 12)
++ * @param {Number} m31 Component in column 3, row 1 position (index 13)
++ * @param {Number} m32 Component in column 3, row 2 position (index 14)
++ * @param {Number} m33 Component in column 3, row 3 position (index 15)
++ * @returns {mat4} A new mat4
++ */
++mat4.fromValues = function(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
++    var out = new glMatrix.ARRAY_TYPE(16);
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m03;
++    out[4] = m10;
++    out[5] = m11;
++    out[6] = m12;
++    out[7] = m13;
++    out[8] = m20;
++    out[9] = m21;
++    out[10] = m22;
++    out[11] = m23;
++    out[12] = m30;
++    out[13] = m31;
++    out[14] = m32;
++    out[15] = m33;
++    return out;
++};
+ 
+-        if (!bufferGroups || !bufferGroups.length) continue;
+-        var group = bufferGroups[0];
+-        if (group.layout.vertex.length === 0) continue;
++/**
++ * Set the components of a mat4 to the given values
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m03 Component in column 0, row 3 position (index 3)
++ * @param {Number} m10 Component in column 1, row 0 position (index 4)
++ * @param {Number} m11 Component in column 1, row 1 position (index 5)
++ * @param {Number} m12 Component in column 1, row 2 position (index 6)
++ * @param {Number} m13 Component in column 1, row 3 position (index 7)
++ * @param {Number} m20 Component in column 2, row 0 position (index 8)
++ * @param {Number} m21 Component in column 2, row 1 position (index 9)
++ * @param {Number} m22 Component in column 2, row 2 position (index 10)
++ * @param {Number} m23 Component in column 2, row 3 position (index 11)
++ * @param {Number} m30 Component in column 3, row 0 position (index 12)
++ * @param {Number} m31 Component in column 3, row 1 position (index 13)
++ * @param {Number} m32 Component in column 3, row 2 position (index 14)
++ * @param {Number} m33 Component in column 3, row 3 position (index 15)
++ * @returns {mat4} out
++ */
++mat4.set = function(out, m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m03;
++    out[4] = m10;
++    out[5] = m11;
++    out[6] = m12;
++    out[7] = m13;
++    out[8] = m20;
++    out[9] = m21;
++    out[10] = m22;
++    out[11] = m23;
++    out[12] = m30;
++    out[13] = m31;
++    out[14] = m32;
++    out[15] = m33;
++    return out;
++};
+ 
+-        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
+ 
+-        painter.enableTileClippingMask(coord);
++/**
++ * Set a mat4 to the identity matrix
++ *
++ * @param {mat4} out the receiving matrix
++ * @returns {mat4} out
++ */
++mat4.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
+ 
+-        painter.lineWidth(1);
+-        gl.uniform1f(program.u_scale, Math.pow(2, painter.transform.zoom - tile.coord.z));
+-        gl.uniform1f(program.u_zoom, painter.transform.zoom * 10);
+-        gl.uniform1f(program.u_maxzoom, (tile.coord.z + 1) * 10);
++/**
++ * Transpose the values of a mat4 not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.scalar.transpose = function(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a01 = a[1], a02 = a[2], a03 = a[3],
++            a12 = a[6], a13 = a[7],
++            a23 = a[11];
+ 
+-        group.vaos[layer.id].bind(gl, program, group.layout.vertex);
+-        gl.drawArrays(gl.LINES, 0, group.layout.vertex.length);
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a01;
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a02;
++        out[9] = a12;
++        out[11] = a[14];
++        out[12] = a03;
++        out[13] = a13;
++        out[14] = a23;
++    } else {
++        out[0] = a[0];
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a[1];
++        out[5] = a[5];
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a[2];
++        out[9] = a[6];
++        out[10] = a[10];
++        out[11] = a[14];
++        out[12] = a[3];
++        out[13] = a[7];
++        out[14] = a[11];
++        out[15] = a[15];
+     }
+-}
+ 
+-},{}],34:[function(require,module,exports){
+-'use strict';
++    return out;
++};
+ 
+-var textVertices = require('../lib/debugtext');
+-var browser = require('../util/browser');
+-var mat4 = require('gl-matrix').mat4;
+-var EXTENT = require('../data/bucket').EXTENT;
+-var Buffer = require('../data/buffer');
+-var VertexArrayObject = require('./vertex_array_object');
++/**
++ * Transpose the values of a mat4 using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.SIMD.transpose = function(out, a) {
++    var a0, a1, a2, a3,
++        tmp01, tmp23,
++        out0, out1, out2, out3;
+ 
+-module.exports = drawDebug;
++    a0 = SIMD.Float32x4.load(a, 0);
++    a1 = SIMD.Float32x4.load(a, 4);
++    a2 = SIMD.Float32x4.load(a, 8);
++    a3 = SIMD.Float32x4.load(a, 12);
+ 
+-function drawDebug(painter, source, coords) {
+-    if (painter.isOpaquePass) return;
+-    if (!painter.options.debug) return;
++    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
++    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
++    out0  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
++    out1  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
++    SIMD.Float32x4.store(out, 0,  out0);
++    SIMD.Float32x4.store(out, 4,  out1);
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        drawDebugTile(painter, source, coords[i]);
+-    }
+-}
++    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
++    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
++    out2  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
++    out3  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
++    SIMD.Float32x4.store(out, 8,  out2);
++    SIMD.Float32x4.store(out, 12, out3);
+ 
+-function drawDebugTile(painter, source, coord) {
+-    var gl = painter.gl;
++    return out;
++};
+ 
+-    gl.disable(gl.STENCIL_TEST);
+-    painter.lineWidth(1 * browser.devicePixelRatio);
++/**
++ * Transpse a mat4 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.transpose = glMatrix.USE_SIMD ? mat4.SIMD.transpose : mat4.scalar.transpose;
+ 
+-    var posMatrix = coord.posMatrix;
+-    var program = painter.useProgram('debug');
++/**
++ * Inverts a mat4 not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.scalar.invert = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+-    gl.uniform4f(program.u_color, 1, 0, 0, 1);
+-    painter.debugVAO.bind(gl, program, painter.debugBuffer);
+-    gl.drawArrays(gl.LINE_STRIP, 0, painter.debugBuffer.length);
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32,
+ 
+-    var vertices = textVertices(coord.toString(), 50, 200, 5);
+-    var debugTextArray = new painter.PosArray();
+-    for (var v = 0; v < vertices.length; v += 2) {
+-        debugTextArray.emplaceBack(vertices[v], vertices[v + 1]);
+-    }
+-    var debugTextBuffer = new Buffer(debugTextArray.serialize(), painter.PosArray.serialize(), Buffer.BufferType.VERTEX);
+-    var debugTextVAO = new VertexArrayObject();
+-    debugTextVAO.bind(gl, program, debugTextBuffer);
+-    gl.uniform4f(program.u_color, 1, 1, 1, 1);
++        // Calculate the determinant
++        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+ 
+-    // Draw the halo with multiple 1px lines instead of one wider line because
+-    // the gl spec doesn't guarantee support for lines with width > 1.
+-    var tileSize = source.getTile(coord).tileSize;
+-    var onePixel = EXTENT / (Math.pow(2, painter.transform.zoom - coord.z) * tileSize);
+-    var translations = [[-1, -1], [-1, 1], [1, -1], [1, 1]];
+-    for (var i = 0; i < translations.length; i++) {
+-        var translation = translations[i];
+-        gl.uniformMatrix4fv(program.u_matrix, false, mat4.translate([], posMatrix, [onePixel * translation[0], onePixel * translation[1], 0]));
+-        gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
++    if (!det) {
++        return null;
+     }
++    det = 1.0 / det;
+ 
+-    gl.uniform4f(program.u_color, 0, 0, 0, 1);
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+-    gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
+-}
+-
+-},{"../data/bucket":17,"../data/buffer":22,"../lib/debugtext":29,"../util/browser":105,"./vertex_array_object":43,"gl-matrix":133}],35:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
++    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
++    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
++    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
++    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
++    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
++    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
++    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
++    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
++    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
++    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
++    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
++    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
++    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
++    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
++    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
+ 
+-module.exports = draw;
++    return out;
++};
+ 
+-function draw(painter, source, layer, coords) {
+-    var gl = painter.gl;
+-    gl.enable(gl.STENCIL_TEST);
++/**
++ * Inverts a mat4 using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.SIMD.invert = function(out, a) {
++  var row0, row1, row2, row3,
++      tmp1,
++      minor0, minor1, minor2, minor3,
++      det,
++      a0 = SIMD.Float32x4.load(a, 0),
++      a1 = SIMD.Float32x4.load(a, 4),
++      a2 = SIMD.Float32x4.load(a, 8),
++      a3 = SIMD.Float32x4.load(a, 12);
+ 
+-    var color = util.premultiply(layer.paint['fill-color']);
+-    var image = layer.paint['fill-pattern'];
+-    var strokeColor = util.premultiply(layer.paint['fill-outline-color']);
+-    var opacity = layer.paint['fill-opacity'];
++  // Compute matrix adjugate
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
++  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
++  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
++  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
++  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
++  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
++  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
+ 
+-    // Draw fill
+-    if (image ? !painter.isOpaquePass : painter.isOpaquePass === (color[3] === 1 && opacity === 1)) {
+-        // Once we switch to earcut drawing we can pull most of the WebGL setup
+-        // outside of this coords loop.
+-        for (var i = 0; i < coords.length; i++) {
+-            drawFill(painter, source, layer, coords[i]);
+-        }
+-    }
++  tmp1   = SIMD.Float32x4.mul(row2, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.mul(row1, tmp1);
++  minor1 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
++  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
++  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
+ 
+-    // Draw stroke
+-    if (!painter.isOpaquePass && layer.paint['fill-antialias']) {
+-        if (strokeColor || !layer.paint['fill-pattern']) {
+-            var outlineProgram = painter.useProgram('outline');
+-            painter.lineWidth(2);
+-            painter.depthMask(false);
++  tmp1   = SIMD.Float32x4.mul(row1, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
++  minor3 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
++  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
+ 
+-            if (strokeColor) {
+-                // If we defined a different color for the fill outline, we are
+-                // going to ignore the bits in 0x07 and just care about the global
+-                // clipping mask.
+-                painter.setDepthSublayer(2);
+-            } else {
+-                // Otherwise, we only want to drawFill the antialiased parts that are
+-                // *outside* the current shape. This is important in case the fill
+-                // or stroke color is translucent. If we wouldn't clip to outside
+-                // the current shape, some pixels from the outline stroke overlapped
+-                // the (non-antialiased) fill.
+-                painter.setDepthSublayer(0);
+-            }
+-            gl.uniform2f(outlineProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
+-            gl.uniform4fv(outlineProgram.u_color, strokeColor ? strokeColor : color);
+-            gl.uniform1f(outlineProgram.u_opacity, opacity);
++  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
++  minor2 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
++  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
+ 
+-            for (var j = 0; j < coords.length; j++) {
+-                drawStroke(painter, source, layer, coords[j]);
+-            }
+-        } else {
+-            var outlinePatternProgram = painter.useProgram('outlinepattern');
+-            painter.lineWidth(2);
+-            painter.depthMask(false);
+-            // Otherwise, we only want to drawFill the antialiased parts that are
+-            // *outside* the current shape. This is important in case the fill
+-            // or stroke color is translucent. If we wouldn't clip to outside
+-            // the current shape, some pixels from the outline stroke overlapped
+-            // the (non-antialiased) fill.
+-            painter.setDepthSublayer(0);
+-            gl.uniform2f(outlinePatternProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
++  tmp1   = SIMD.Float32x4.mul(row0, row1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
+ 
+-            for (var k = 0; k < coords.length; k++) {
+-                drawStroke(painter, source, layer, coords[k]);
+-            }
+-        }
++  tmp1   = SIMD.Float32x4.mul(row0, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
++  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
+ 
+-    }
+-}
++  tmp1   = SIMD.Float32x4.mul(row0, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
+ 
+-function drawFill(painter, source, layer, coord) {
+-    var tile = source.getTile(coord);
+-    var bucket = tile.getBucket(layer);
+-    if (!bucket) return;
+-    var bufferGroups = bucket.bufferGroups.fill;
+-    if (!bufferGroups) return;
++  // Compute matrix determinant
++  det   = SIMD.Float32x4.mul(row0, minor0);
++  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 2, 3, 0, 1), det);
++  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 1, 0, 3, 2), det);
++  tmp1  = SIMD.Float32x4.reciprocalApproximation(det);
++  det   = SIMD.Float32x4.sub(
++               SIMD.Float32x4.add(tmp1, tmp1),
++               SIMD.Float32x4.mul(det, SIMD.Float32x4.mul(tmp1, tmp1)));
++  det   = SIMD.Float32x4.swizzle(det, 0, 0, 0, 0);
++  if (!det) {
++      return null;
++  }
+ 
+-    var gl = painter.gl;
++  // Compute matrix inverse
++  SIMD.Float32x4.store(out, 0,  SIMD.Float32x4.mul(det, minor0));
++  SIMD.Float32x4.store(out, 4,  SIMD.Float32x4.mul(det, minor1));
++  SIMD.Float32x4.store(out, 8,  SIMD.Float32x4.mul(det, minor2));
++  SIMD.Float32x4.store(out, 12, SIMD.Float32x4.mul(det, minor3));
++  return out;
++}
+ 
+-    var color = util.premultiply(layer.paint['fill-color']);
+-    var image = layer.paint['fill-pattern'];
+-    var opacity = layer.paint['fill-opacity'];
++/**
++ * Inverts a mat4 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.invert = glMatrix.USE_SIMD ? mat4.SIMD.invert : mat4.scalar.invert;
+ 
+-    var posMatrix = coord.posMatrix;
+-    var translatedPosMatrix = painter.translatePosMatrix(posMatrix, tile, layer.paint['fill-translate'], layer.paint['fill-translate-anchor']);
++/**
++ * Calculates the adjugate of a mat4 not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.scalar.adjoint = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+ 
+-    // Draw the stencil mask.
+-    painter.setDepthSublayer(1);
++    out[0]  =  (a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22));
++    out[1]  = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));
++    out[2]  =  (a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12));
++    out[3]  = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));
++    out[4]  = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));
++    out[5]  =  (a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22));
++    out[6]  = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));
++    out[7]  =  (a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12));
++    out[8]  =  (a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21));
++    out[9]  = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));
++    out[10] =  (a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11));
++    out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));
++    out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));
++    out[13] =  (a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21));
++    out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));
++    out[15] =  (a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11));
++    return out;
++};
+ 
+-    // We're only drawFilling to the first seven bits (== support a maximum of
+-    // 8 overlapping polygons in one place before we get rendering errors).
+-    gl.stencilMask(0x07);
+-    gl.clear(gl.STENCIL_BUFFER_BIT);
++/**
++ * Calculates the adjugate of a mat4 using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.SIMD.adjoint = function(out, a) {
++  var a0, a1, a2, a3;
++  var row0, row1, row2, row3;
++  var tmp1;
++  var minor0, minor1, minor2, minor3;
+ 
+-    // Draw front facing triangles. Wherever the 0x80 bit is 1, we are
+-    // increasing the lower 7 bits by one if the triangle is a front-facing
+-    // triangle. This means that all visible polygons should be in CCW
+-    // orientation, while all holes (see below) are in CW orientation.
+-    painter.enableTileClippingMask(coord);
++  var a0 = SIMD.Float32x4.load(a, 0);
++  var a1 = SIMD.Float32x4.load(a, 4);
++  var a2 = SIMD.Float32x4.load(a, 8);
++  var a3 = SIMD.Float32x4.load(a, 12);
+ 
+-    // When we do a nonzero fill, we count the number of times a pixel is
+-    // covered by a counterclockwise polygon, and subtract the number of
+-    // times it is "uncovered" by a clockwise polygon.
+-    gl.stencilOpSeparate(gl.FRONT, gl.KEEP, gl.KEEP, gl.INCR_WRAP);
+-    gl.stencilOpSeparate(gl.BACK, gl.KEEP, gl.KEEP, gl.DECR_WRAP);
++  // Transpose the source matrix.  Sort of.  Not a true transpose operation
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
++  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
++  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
++  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
+ 
+-    // When drawFilling a shape, we first drawFill all shapes to the stencil buffer
+-    // and incrementing all areas where polygons are
+-    gl.colorMask(false, false, false, false);
+-    painter.depthMask(false);
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
++  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
++  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
++  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
+ 
+-    // Draw the actual triangle fan into the stencil buffer.
+-    var fillProgram = painter.useProgram('fill');
+-    gl.uniformMatrix4fv(fillProgram.u_matrix, false, translatedPosMatrix);
++  tmp1   = SIMD.Float32x4.mul(row2, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.mul(row1, tmp1);
++  minor1 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
++  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
++  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
+ 
+-    for (var i = 0; i < bufferGroups.length; i++) {
+-        var group = bufferGroups[i];
+-        group.vaos[layer.id].bind(gl, fillProgram, group.layout.vertex, group.layout.element);
+-        gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-    }
++  tmp1   = SIMD.Float32x4.mul(row1, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
++  minor3 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
++  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
+ 
+-    // Now that we have the stencil mask in the stencil buffer, we can start
+-    // writing to the color buffer.
+-    gl.colorMask(true, true, true, true);
+-    painter.depthMask(true);
++  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
++  minor2 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
++  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
+ 
+-    // From now on, we don't want to update the stencil buffer anymore.
+-    gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
+-    gl.stencilMask(0x0);
+-    var program;
++  tmp1   = SIMD.Float32x4.mul(row0, row1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
+ 
+-    if (image) {
+-        // Draw texture fill
+-        program = painter.useProgram('pattern');
+-        setPattern(image, opacity, tile, coord, painter, program);
++  tmp1   = SIMD.Float32x4.mul(row0, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
++  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
+ 
+-        gl.activeTexture(gl.TEXTURE0);
+-        painter.spriteAtlas.bind(gl, true);
++  tmp1   = SIMD.Float32x4.mul(row0, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
+ 
+-        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
++  SIMD.Float32x4.store(out, 0,  minor0);
++  SIMD.Float32x4.store(out, 4,  minor1);
++  SIMD.Float32x4.store(out, 8,  minor2);
++  SIMD.Float32x4.store(out, 12, minor3);
++  return out;
++};
+ 
+-    } else {
+-        // Draw filling rectangle.
+-        program = painter.useProgram('fill');
+-        gl.uniform4fv(fillProgram.u_color, color);
+-        gl.uniform1f(fillProgram.u_opacity, opacity);
+-        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
+-    }
++/**
++ * Calculates the adjugate of a mat4 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++ mat4.adjoint = glMatrix.USE_SIMD ? mat4.SIMD.adjoint : mat4.scalar.adjoint;
+ 
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++/**
++ * Calculates the determinant of a mat4
++ *
++ * @param {mat4} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat4.determinant = function (a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-    // Only draw regions that we marked
+-    gl.stencilFunc(gl.NOTEQUAL, 0x0, 0x07);
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32;
+ 
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
++    // Calculate the determinant
++    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++};
+ 
+-    gl.stencilMask(0x00);
+-}
++/**
++ * Multiplies two mat4's explicitly using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand, must be a Float32Array
++ * @param {mat4} b the second operand, must be a Float32Array
++ * @returns {mat4} out
++ */
++mat4.SIMD.multiply = function (out, a, b) {
++    var a0 = SIMD.Float32x4.load(a, 0);
++    var a1 = SIMD.Float32x4.load(a, 4);
++    var a2 = SIMD.Float32x4.load(a, 8);
++    var a3 = SIMD.Float32x4.load(a, 12);
+ 
+-function drawStroke(painter, source, layer, coord) {
+-    var tile = source.getTile(coord);
+-    var bucket = tile.getBucket(layer);
+-    if (!bucket) return;
++    var b0 = SIMD.Float32x4.load(b, 0);
++    var out0 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 1, 1, 1, 1), a1),
++                       SIMD.Float32x4.add(
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 2, 2, 2, 2), a2),
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 0, out0);
+ 
+-    var gl = painter.gl;
+-    var bufferGroups = bucket.bufferGroups.fill;
++    var b1 = SIMD.Float32x4.load(b, 4);
++    var out1 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 1, 1, 1, 1), a1),
++                       SIMD.Float32x4.add(
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 2, 2, 2, 2), a2),
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 4, out1);
+ 
+-    var image = layer.paint['fill-pattern'];
+-    var opacity = layer.paint['fill-opacity'];
+-    var program = image ? painter.useProgram('outlinepattern') : painter.useProgram('outline');
++    var b2 = SIMD.Float32x4.load(b, 8);
++    var out2 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 1, 1, 1, 1), a1),
++                       SIMD.Float32x4.add(
++                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 2, 2, 2, 2), a2),
++                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 8, out2);
+ 
+-    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
+-        coord.posMatrix,
+-        tile,
+-        layer.paint['fill-translate'],
+-        layer.paint['fill-translate-anchor']
+-    ));
++    var b3 = SIMD.Float32x4.load(b, 12);
++    var out3 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                        SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 1, 1, 1, 1), a1),
++                        SIMD.Float32x4.add(
++                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 2, 2, 2, 2), a2),
++                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 12, out3);
+ 
+-    if (image) { setPattern(image, opacity, tile, coord, painter, program); }
++    return out;
++};
+ 
+-    painter.enableTileClippingMask(coord);
++/**
++ * Multiplies two mat4's explicitly not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++mat4.scalar.multiply = function (out, a, b) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+ 
+-    for (var k = 0; k < bufferGroups.length; k++) {
+-        var group = bufferGroups[k];
+-        group.secondVaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element2);
+-        gl.drawElements(gl.LINES, group.layout.element2.length * 2, gl.UNSIGNED_SHORT, 0);
+-    }
+-}
++    // Cache only the current line of the second matrix
++    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
++    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
++    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-function setPattern(image, opacity, tile, coord, painter, program) {
+-    var gl = painter.gl;
++    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
++    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-    var imagePosA = painter.spriteAtlas.getPosition(image.from, true);
+-    var imagePosB = painter.spriteAtlas.getPosition(image.to, true);
+-    if (!imagePosA || !imagePosB) return;
++    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
++    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    return out;
++};
+ 
++/**
++ * Multiplies two mat4's using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++mat4.multiply = glMatrix.USE_SIMD ? mat4.SIMD.multiply : mat4.scalar.multiply;
+ 
+-    gl.uniform1i(program.u_image, 0);
+-    gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
+-    gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
+-    gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
+-    gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
+-    gl.uniform1f(program.u_opacity, opacity);
+-    gl.uniform1f(program.u_mix, image.t);
++/**
++ * Alias for {@link mat4.multiply}
++ * @function
++ */
++mat4.mul = mat4.multiply;
+ 
+-    var imageSizeScaledA = [
+-        (imagePosA.size[0] * image.fromScale),
+-        (imagePosA.size[1] * image.fromScale)
+-    ];
+-    var imageSizeScaledB = [
+-        (imagePosB.size[0] * image.toScale),
+-        (imagePosB.size[1] * image.toScale)
+-    ];
++/**
++ * Translate a mat4 by the given vector not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
++ */
++mat4.scalar.translate = function (out, a, v) {
++    var x = v[0], y = v[1], z = v[2],
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23;
+ 
+-    gl.uniform2fv(program.u_patternscale_a, [
+-        1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
+-        1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
+-    ]);
++    if (a === out) {
++        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
++        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
++        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
++        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
++    } else {
++        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-    gl.uniform2fv(program.u_patternscale_b, [
+-        1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
+-        1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
+-    ]);
++        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
++        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
++        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
+ 
+-    var tileSizeAtNearestZoom = tile.tileSize * Math.pow(2, painter.transform.tileZoom - tile.coord.z);
++        out[12] = a00 * x + a10 * y + a20 * z + a[12];
++        out[13] = a01 * x + a11 * y + a21 * z + a[13];
++        out[14] = a02 * x + a12 * y + a22 * z + a[14];
++        out[15] = a03 * x + a13 * y + a23 * z + a[15];
++    }
+ 
+-    // shift images to match at tile boundaries
+-    var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
+-    var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * tile.coord.y;
++    return out;
++};
+ 
+-    var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
+-    var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * tile.coord.y;
++/**
++ * Translates a mat4 by the given vector using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
++ */
++mat4.SIMD.translate = function (out, a, v) {
++    var a0 = SIMD.Float32x4.load(a, 0),
++        a1 = SIMD.Float32x4.load(a, 4),
++        a2 = SIMD.Float32x4.load(a, 8),
++        a3 = SIMD.Float32x4.load(a, 12),
++        vec = SIMD.Float32x4(v[0], v[1], v[2] , 0);
+ 
+-    gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
+-    gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
++    if (a !== out) {
++        out[0] = a[0]; out[1] = a[1]; out[2] = a[2]; out[3] = a[3];
++        out[4] = a[4]; out[5] = a[5]; out[6] = a[6]; out[7] = a[7];
++        out[8] = a[8]; out[9] = a[9]; out[10] = a[10]; out[11] = a[11];
++    }
+ 
+-    gl.activeTexture(gl.TEXTURE0);
+-    painter.spriteAtlas.bind(gl, true);
+-}
++    a0 = SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0));
++    a1 = SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1));
++    a2 = SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2));
+ 
+-},{"../source/pixels_to_tile_units":47,"../util/util":119}],36:[function(require,module,exports){
+-'use strict';
++    var t0 = SIMD.Float32x4.add(a0, SIMD.Float32x4.add(a1, SIMD.Float32x4.add(a2, a3)));
++    SIMD.Float32x4.store(out, 12, t0);
+ 
+-var browser = require('../util/browser');
+-var mat2 = require('gl-matrix').mat2;
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++    return out;
++};
+ 
+ /**
+- * Draw a line. Under the hood this will read elements from
+- * a tile, dash textures from a lineAtlas, and style properties from a layer.
+- * @param {Object} painter
+- * @param {Object} layer
+- * @param {Object} posMatrix
+- * @param {Tile} tile
+- * @returns {undefined} draws with the painter
+- * @private
++ * Translates a mat4 by the given vector using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
+  */
+-module.exports = function drawLine(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
+-    painter.setDepthSublayer(0);
+-    painter.depthMask(false);
+-
+-    var gl = painter.gl;
+-    gl.enable(gl.STENCIL_TEST);
++mat4.translate = glMatrix.USE_SIMD ? mat4.SIMD.translate : mat4.scalar.translate;
+ 
+-    // don't draw zero-width lines
+-    if (layer.paint['line-width'] <= 0) return;
++/**
++ * Scales the mat4 by the dimensions in the given vec3 not using vectorization
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ **/
++mat4.scalar.scale = function(out, a, v) {
++    var x = v[0], y = v[1], z = v[2];
+ 
+-    // the distance over which the line edge fades out.
+-    // Retina devices need a smaller distance to avoid aliasing.
+-    var antialiasing = 1 / browser.devicePixelRatio;
++    out[0] = a[0] * x;
++    out[1] = a[1] * x;
++    out[2] = a[2] * x;
++    out[3] = a[3] * x;
++    out[4] = a[4] * y;
++    out[5] = a[5] * y;
++    out[6] = a[6] * y;
++    out[7] = a[7] * y;
++    out[8] = a[8] * z;
++    out[9] = a[9] * z;
++    out[10] = a[10] * z;
++    out[11] = a[11] * z;
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-    var blur = layer.paint['line-blur'] + antialiasing;
+-    var edgeWidth = layer.paint['line-width'] / 2;
+-    var inset = -1;
+-    var offset = 0;
+-    var shift = 0;
++/**
++ * Scales the mat4 by the dimensions in the given vec3 using vectorization
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ **/
++mat4.SIMD.scale = function(out, a, v) {
++    var a0, a1, a2;
++    var vec = SIMD.Float32x4(v[0], v[1], v[2], 0);
+ 
+-    if (layer.paint['line-gap-width'] > 0) {
+-        inset = layer.paint['line-gap-width'] / 2 + antialiasing * 0.5;
+-        edgeWidth = layer.paint['line-width'];
++    a0 = SIMD.Float32x4.load(a, 0);
++    SIMD.Float32x4.store(
++        out, 0, SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0)));
+ 
+-        // shift outer lines half a pixel towards the middle to eliminate the crack
+-        offset = inset - antialiasing / 2;
+-    }
++    a1 = SIMD.Float32x4.load(a, 4);
++    SIMD.Float32x4.store(
++        out, 4, SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1)));
+ 
+-    var outset = offset + edgeWidth + antialiasing / 2 + shift;
+-    var color = util.premultiply(layer.paint['line-color']);
++    a2 = SIMD.Float32x4.load(a, 8);
++    SIMD.Float32x4.store(
++        out, 8, SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2)));
+ 
+-    var tr = painter.transform;
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-    var antialiasingMatrix = mat2.create();
+-    mat2.scale(antialiasingMatrix, antialiasingMatrix, [1, Math.cos(tr._pitch)]);
+-    mat2.rotate(antialiasingMatrix, antialiasingMatrix, painter.transform.angle);
++/**
++ * Scales the mat4 by the dimensions in the given vec3 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ */
++mat4.scale = glMatrix.USE_SIMD ? mat4.SIMD.scale : mat4.scalar.scale;
+ 
+-    // calculate how much longer the real world distance is at the top of the screen
+-    // than at the middle of the screen.
+-    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
+-    var x = tr.height / 2 * Math.tan(tr._pitch);
+-    var extra = (topedgelength + x) / topedgelength - 1;
++/**
++ * Rotates a mat4 by the given angle around the given axis
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @param {vec3} axis the axis to rotate around
++ * @returns {mat4} out
++ */
++mat4.rotate = function (out, a, rad, axis) {
++    var x = axis[0], y = axis[1], z = axis[2],
++        len = Math.sqrt(x * x + y * y + z * z),
++        s, c, t,
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23,
++        b00, b01, b02,
++        b10, b11, b12,
++        b20, b21, b22;
+ 
+-    var dasharray = layer.paint['line-dasharray'];
+-    var image = layer.paint['line-pattern'];
+-    var program, posA, posB, imagePosA, imagePosB;
++    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
+ 
+-    if (dasharray) {
+-        program = painter.useProgram('linesdfpattern');
++    len = 1 / len;
++    x *= len;
++    y *= len;
++    z *= len;
+ 
+-        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
+-        gl.uniform1f(program.u_blur, blur);
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
++    s = Math.sin(rad);
++    c = Math.cos(rad);
++    t = 1 - c;
+ 
+-        posA = painter.lineAtlas.getDash(dasharray.from, layer.layout['line-cap'] === 'round');
+-        posB = painter.lineAtlas.getDash(dasharray.to, layer.layout['line-cap'] === 'round');
++    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-        gl.uniform1i(program.u_image, 0);
+-        gl.activeTexture(gl.TEXTURE0);
+-        painter.lineAtlas.bind(gl);
++    // Construct the elements of the rotation matrix
++    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
++    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
++    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
+ 
+-        gl.uniform1f(program.u_tex_y_a, posA.y);
+-        gl.uniform1f(program.u_tex_y_b, posB.y);
+-        gl.uniform1f(program.u_mix, dasharray.t);
+-        gl.uniform1f(program.u_extra, extra);
+-        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
+-        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
++    // Perform rotation-specific matrix multiplication
++    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
++    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
++    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
++    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
++    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
++    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
++    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
++    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
++    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
++    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
++    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
++    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
+ 
+-    } else if (image) {
+-        imagePosA = painter.spriteAtlas.getPosition(image.from, true);
+-        imagePosB = painter.spriteAtlas.getPosition(image.to, true);
+-        if (!imagePosA || !imagePosB) return;
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
++    return out;
++};
+ 
+-        program = painter.useProgram('linepattern');
++/**
++ * Rotates a matrix by the given angle around the X axis not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.scalar.rotateX = function (out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
+ 
+-        gl.uniform1i(program.u_image, 0);
+-        gl.activeTexture(gl.TEXTURE0);
+-        painter.spriteAtlas.bind(gl, true);
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[0]  = a[0];
++        out[1]  = a[1];
++        out[2]  = a[2];
++        out[3]  = a[3];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
+ 
+-        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
+-        gl.uniform1f(program.u_blur, blur);
+-        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
+-        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
+-        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
+-        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
+-        gl.uniform1f(program.u_fade, image.t);
+-        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
+-        gl.uniform1f(program.u_extra, extra);
+-        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
+-        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
++    // Perform axis-specific matrix multiplication
++    out[4] = a10 * c + a20 * s;
++    out[5] = a11 * c + a21 * s;
++    out[6] = a12 * c + a22 * s;
++    out[7] = a13 * c + a23 * s;
++    out[8] = a20 * c - a10 * s;
++    out[9] = a21 * c - a11 * s;
++    out[10] = a22 * c - a12 * s;
++    out[11] = a23 * c - a13 * s;
++    return out;
++};
+ 
+-    } else {
+-        program = painter.useProgram('line');
++/**
++ * Rotates a matrix by the given angle around the X axis using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.SIMD.rotateX = function (out, a, rad) {
++    var s = SIMD.Float32x4.splat(Math.sin(rad)),
++        c = SIMD.Float32x4.splat(Math.cos(rad));
+ 
+-        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
+-        gl.uniform1f(program.u_blur, blur);
+-        gl.uniform1f(program.u_extra, extra);
+-        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
+-        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++      out[0]  = a[0];
++      out[1]  = a[1];
++      out[2]  = a[2];
++      out[3]  = a[3];
++      out[12] = a[12];
++      out[13] = a[13];
++      out[14] = a[14];
++      out[15] = a[15];
+     }
+ 
+-    for (var k = 0; k < coords.length; k++) {
+-        var coord = coords[k];
+-        var tile = source.getTile(coord);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bufferGroups = bucket.bufferGroups.line;
+-        if (!bufferGroups) continue;
+-
+-        painter.enableTileClippingMask(coord);
++    // Perform axis-specific matrix multiplication
++    var a_1 = SIMD.Float32x4.load(a, 4);
++    var a_2 = SIMD.Float32x4.load(a, 8);
++    SIMD.Float32x4.store(out, 4,
++                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_2, s)));
++    SIMD.Float32x4.store(out, 8,
++                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_2, c), SIMD.Float32x4.mul(a_1, s)));
++    return out;
++};
+ 
+-        // set uniforms that are different for each tile
+-        var posMatrix = painter.translatePosMatrix(coord.posMatrix, tile, layer.paint['line-translate'], layer.paint['line-translate-anchor']);
+-        gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++/**
++ * Rotates a matrix by the given angle around the X axis using SIMD if availabe and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.rotateX = glMatrix.USE_SIMD ? mat4.SIMD.rotateX : mat4.scalar.rotateX;
+ 
+-        var ratio = 1 / pixelsToTileUnits(tile, 1, painter.transform.zoom);
++/**
++ * Rotates a matrix by the given angle around the Y axis not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.scalar.rotateY = function (out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
+ 
+-        if (dasharray) {
+-            var widthA = posA.width * dasharray.fromScale;
+-            var widthB = posB.width * dasharray.toScale;
+-            var scaleA = [1 / pixelsToTileUnits(tile, widthA, painter.transform.tileZoom), -posA.height / 2];
+-            var scaleB = [1 / pixelsToTileUnits(tile, widthB, painter.transform.tileZoom), -posB.height / 2];
+-            var gamma = painter.lineAtlas.width / (Math.min(widthA, widthB) * 256 * browser.devicePixelRatio) / 2;
+-            gl.uniform1f(program.u_ratio, ratio);
+-            gl.uniform2fv(program.u_patternscale_a, scaleA);
+-            gl.uniform2fv(program.u_patternscale_b, scaleB);
+-            gl.uniform1f(program.u_sdfgamma, gamma);
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[4]  = a[4];
++        out[5]  = a[5];
++        out[6]  = a[6];
++        out[7]  = a[7];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
+ 
+-        } else if (image) {
+-            gl.uniform1f(program.u_ratio, ratio);
+-            gl.uniform2fv(program.u_pattern_size_a, [
+-                pixelsToTileUnits(tile, imagePosA.size[0] * image.fromScale, painter.transform.tileZoom),
+-                imagePosB.size[1]
+-            ]);
+-            gl.uniform2fv(program.u_pattern_size_b, [
+-                pixelsToTileUnits(tile, imagePosB.size[0] * image.toScale, painter.transform.tileZoom),
+-                imagePosB.size[1]
+-            ]);
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c - a20 * s;
++    out[1] = a01 * c - a21 * s;
++    out[2] = a02 * c - a22 * s;
++    out[3] = a03 * c - a23 * s;
++    out[8] = a00 * s + a20 * c;
++    out[9] = a01 * s + a21 * c;
++    out[10] = a02 * s + a22 * c;
++    out[11] = a03 * s + a23 * c;
++    return out;
++};
+ 
+-        } else {
+-            gl.uniform1f(program.u_ratio, ratio);
+-        }
++/**
++ * Rotates a matrix by the given angle around the Y axis using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.SIMD.rotateY = function (out, a, rad) {
++    var s = SIMD.Float32x4.splat(Math.sin(rad)),
++        c = SIMD.Float32x4.splat(Math.cos(rad));
+ 
+-        for (var i = 0; i < bufferGroups.length; i++) {
+-            var group = bufferGroups[i];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-        }
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[4]  = a[4];
++        out[5]  = a[5];
++        out[6]  = a[6];
++        out[7]  = a[7];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+ 
++    // Perform axis-specific matrix multiplication
++    var a_0 = SIMD.Float32x4.load(a, 0);
++    var a_2 = SIMD.Float32x4.load(a, 8);
++    SIMD.Float32x4.store(out, 0,
++                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_2, s)));
++    SIMD.Float32x4.store(out, 8,
++                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, s), SIMD.Float32x4.mul(a_2, c)));
++    return out;
+ };
+ 
+-},{"../source/pixels_to_tile_units":47,"../util/browser":105,"../util/util":119,"gl-matrix":133}],37:[function(require,module,exports){
+-'use strict';
++/**
++ * Rotates a matrix by the given angle around the Y axis if SIMD available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++ mat4.rotateY = glMatrix.USE_SIMD ? mat4.SIMD.rotateY : mat4.scalar.rotateY;
+ 
+-var util = require('../util/util');
+-var StructArrayType = require('../util/struct_array');
+-
+-module.exports = drawRaster;
+-
+-function drawRaster(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
+-
+-    var gl = painter.gl;
+-
+-    gl.enable(gl.DEPTH_TEST);
+-    painter.depthMask(true);
+-
+-    // Change depth function to prevent double drawing in areas where tiles overlap.
+-    gl.depthFunc(gl.LESS);
+-
+-    var minTileZ = coords.length && coords[0].z;
++/**
++ * Rotates a matrix by the given angle around the Z axis not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.scalar.rotateZ = function (out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7];
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
+-        // set the lower zoom level to sublayer 0, and higher zoom levels to higher sublayers
+-        painter.setDepthSublayer(coord.z - minTileZ);
+-        drawRasterTile(painter, source, layer, coord);
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[8]  = a[8];
++        out[9]  = a[9];
++        out[10] = a[10];
++        out[11] = a[11];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+ 
+-    gl.depthFunc(gl.LEQUAL);
+-}
+-
+-drawRaster.RasterBoundsArray = new StructArrayType({
+-    members: [
+-        { name: 'a_pos', type: 'Int16', components: 2 },
+-        { name: 'a_texture_pos', type: 'Int16', components: 2 }
+-    ]
+-});
+-
+-function drawRasterTile(painter, source, layer, coord) {
+-
+-    var gl = painter.gl;
+-
+-    gl.disable(gl.STENCIL_TEST);
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c + a10 * s;
++    out[1] = a01 * c + a11 * s;
++    out[2] = a02 * c + a12 * s;
++    out[3] = a03 * c + a13 * s;
++    out[4] = a10 * c - a00 * s;
++    out[5] = a11 * c - a01 * s;
++    out[6] = a12 * c - a02 * s;
++    out[7] = a13 * c - a03 * s;
++    return out;
++};
+ 
+-    var tile = source.getTile(coord);
+-    var posMatrix = painter.transform.calculatePosMatrix(coord, source.maxzoom);
++/**
++ * Rotates a matrix by the given angle around the Z axis using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.SIMD.rotateZ = function (out, a, rad) {
++    var s = SIMD.Float32x4.splat(Math.sin(rad)),
++        c = SIMD.Float32x4.splat(Math.cos(rad));
+ 
+-    var program = painter.useProgram('raster');
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[8]  = a[8];
++        out[9]  = a[9];
++        out[10] = a[10];
++        out[11] = a[11];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
+ 
+-    // color parameters
+-    gl.uniform1f(program.u_brightness_low, layer.paint['raster-brightness-min']);
+-    gl.uniform1f(program.u_brightness_high, layer.paint['raster-brightness-max']);
+-    gl.uniform1f(program.u_saturation_factor, saturationFactor(layer.paint['raster-saturation']));
+-    gl.uniform1f(program.u_contrast_factor, contrastFactor(layer.paint['raster-contrast']));
+-    gl.uniform3fv(program.u_spin_weights, spinWeights(layer.paint['raster-hue-rotate']));
++    // Perform axis-specific matrix multiplication
++    var a_0 = SIMD.Float32x4.load(a, 0);
++    var a_1 = SIMD.Float32x4.load(a, 4);
++    SIMD.Float32x4.store(out, 0,
++                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_1, s)));
++    SIMD.Float32x4.store(out, 4,
++                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_0, s)));
++    return out;
++};
+ 
+-    var parentTile = tile.source && tile.source._pyramid.findLoadedParent(coord, 0, {}),
+-        opacities = getOpacities(tile, parentTile, layer, painter.transform);
++/**
++ * Rotates a matrix by the given angle around the Z axis if SIMD available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++ mat4.rotateZ = glMatrix.USE_SIMD ? mat4.SIMD.rotateZ : mat4.scalar.rotateZ;
+ 
+-    var parentScaleBy, parentTL;
++/**
++ * Creates a matrix from a vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, dest, vec);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {vec3} v Translation vector
++ * @returns {mat4} out
++ */
++mat4.fromTranslation = function(out, v) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
++    return out;
++}
+ 
+-    gl.activeTexture(gl.TEXTURE0);
+-    gl.bindTexture(gl.TEXTURE_2D, tile.texture);
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.scale(dest, dest, vec);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {vec3} v Scaling vector
++ * @returns {mat4} out
++ */
++mat4.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = v[1];
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = v[2];
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++}
+ 
+-    if (parentTile) {
+-        gl.activeTexture(gl.TEXTURE1);
+-        gl.bindTexture(gl.TEXTURE_2D, parentTile.texture);
++/**
++ * Creates a matrix from a given angle around a given axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotate(dest, dest, rad, axis);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @param {vec3} axis the axis to rotate around
++ * @returns {mat4} out
++ */
++mat4.fromRotation = function(out, rad, axis) {
++    var x = axis[0], y = axis[1], z = axis[2],
++        len = Math.sqrt(x * x + y * y + z * z),
++        s, c, t;
+ 
+-        parentScaleBy = Math.pow(2, parentTile.coord.z - tile.coord.z);
+-        parentTL = [tile.coord.x * parentScaleBy % 1, tile.coord.y * parentScaleBy % 1];
+-    } else {
+-        opacities[1] = 0;
+-    }
++    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
+ 
+-    // cross-fade parameters
+-    gl.uniform2fv(program.u_tl_parent, parentTL || [0, 0]);
+-    gl.uniform1f(program.u_scale_parent, parentScaleBy || 1);
+-    gl.uniform1f(program.u_buffer_scale, 1);
+-    gl.uniform1f(program.u_opacity0, opacities[0]);
+-    gl.uniform1f(program.u_opacity1, opacities[1]);
+-    gl.uniform1i(program.u_image0, 0);
+-    gl.uniform1i(program.u_image1, 1);
++    len = 1 / len;
++    x *= len;
++    y *= len;
++    z *= len;
+ 
+-    var buffer = tile.boundsBuffer || painter.rasterBoundsBuffer;
+-    var vao = tile.boundsVAO || painter.rasterBoundsVAO;
+-    vao.bind(gl, program, buffer);
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, buffer.length);
+-}
++    s = Math.sin(rad);
++    c = Math.cos(rad);
++    t = 1 - c;
+ 
+-function spinWeights(angle) {
+-    angle *= Math.PI / 180;
+-    var s = Math.sin(angle);
+-    var c = Math.cos(angle);
+-    return [
+-        (2 * c + 1) / 3,
+-        (-Math.sqrt(3) * s - c + 1) / 3,
+-        (Math.sqrt(3) * s - c + 1) / 3
+-    ];
++    // Perform rotation-specific matrix multiplication
++    out[0] = x * x * t + c;
++    out[1] = y * x * t + z * s;
++    out[2] = z * x * t - y * s;
++    out[3] = 0;
++    out[4] = x * y * t - z * s;
++    out[5] = y * y * t + c;
++    out[6] = z * y * t + x * s;
++    out[7] = 0;
++    out[8] = x * z * t + y * s;
++    out[9] = y * z * t - x * s;
++    out[10] = z * z * t + c;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
+ }
+ 
+-function contrastFactor(contrast) {
+-    return contrast > 0 ?
+-        1 / (1 - contrast) :
+-        1 + contrast;
+-}
++/**
++ * Creates a matrix from the given angle around the X axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotateX(dest, dest, rad);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.fromXRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
+ 
+-function saturationFactor(saturation) {
+-    return saturation > 0 ?
+-        1 - 1 / (1.001 - saturation) :
+-        -saturation;
++    // Perform axis-specific matrix multiplication
++    out[0]  = 1;
++    out[1]  = 0;
++    out[2]  = 0;
++    out[3]  = 0;
++    out[4] = 0;
++    out[5] = c;
++    out[6] = s;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = -s;
++    out[10] = c;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
+ }
+ 
+-function getOpacities(tile, parentTile, layer, transform) {
+-    var opacity = [1, 0];
+-    var fadeDuration = layer.paint['raster-fade-duration'];
+-
+-    if (tile.source && fadeDuration > 0) {
+-        var now = new Date().getTime();
++/**
++ * Creates a matrix from the given angle around the Y axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotateY(dest, dest, rad);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.fromYRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
+ 
+-        var sinceTile = (now - tile.timeAdded) / fadeDuration;
+-        var sinceParent = parentTile ? (now - parentTile.timeAdded) / fadeDuration : -1;
++    // Perform axis-specific matrix multiplication
++    out[0]  = c;
++    out[1]  = 0;
++    out[2]  = -s;
++    out[3]  = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = s;
++    out[9] = 0;
++    out[10] = c;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++}
+ 
+-        var idealZ = tile.source._pyramid.coveringZoomLevel(transform);
+-        var parentFurther = parentTile ? Math.abs(parentTile.coord.z - idealZ) > Math.abs(tile.coord.z - idealZ) : false;
++/**
++ * Creates a matrix from the given angle around the Z axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotateZ(dest, dest, rad);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.fromZRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
+ 
+-        if (!parentTile || parentFurther) {
+-            // if no parent or parent is older
+-            opacity[0] = util.clamp(sinceTile, 0, 1);
+-            opacity[1] = 1 - opacity[0];
+-        } else {
+-            // parent is younger, zooming out
+-            opacity[0] = util.clamp(1 - sinceParent, 0, 1);
+-            opacity[1] = 1 - opacity[0];
+-        }
+-    }
++    // Perform axis-specific matrix multiplication
++    out[0]  = c;
++    out[1]  = s;
++    out[2]  = 0;
++    out[3]  = 0;
++    out[4] = -s;
++    out[5] = c;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++}
+ 
+-    var op = layer.paint['raster-opacity'];
+-    opacity[0] *= op;
+-    opacity[1] *= op;
++/**
++ * Creates a matrix from a quaternion rotation and vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @returns {mat4} out
++ */
++mat4.fromRotationTranslation = function (out, q, v) {
++    // Quaternion math
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-    return opacity;
+-}
++        xx = x * x2,
++        xy = x * y2,
++        xz = x * z2,
++        yy = y * y2,
++        yz = y * z2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-},{"../util/struct_array":117,"../util/util":119}],38:[function(require,module,exports){
+-'use strict';
++    out[0] = 1 - (yy + zz);
++    out[1] = xy + wz;
++    out[2] = xz - wy;
++    out[3] = 0;
++    out[4] = xy - wz;
++    out[5] = 1 - (xx + zz);
++    out[6] = yz + wx;
++    out[7] = 0;
++    out[8] = xz + wy;
++    out[9] = yz - wx;
++    out[10] = 1 - (xx + yy);
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
+ 
+-var browser = require('../util/browser');
+-var drawCollisionDebug = require('./draw_collision_debug');
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++    return out;
++};
+ 
++/**
++ * Returns the translation vector component of a transformation
++ *  matrix. If a matrix is built with fromRotationTranslation,
++ *  the returned vector will be the same as the translation vector
++ *  originally supplied.
++ * @param  {vec3} out Vector to receive translation component
++ * @param  {mat4} mat Matrix to be decomposed (input)
++ * @return {vec3} out
++ */
++mat4.getTranslation = function (out, mat) {
++  out[0] = mat[12];
++  out[1] = mat[13];
++  out[2] = mat[14];
+ 
+-module.exports = drawSymbols;
++  return out;
++};
+ 
+-function drawSymbols(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
++/**
++ * Returns a quaternion representing the rotational component
++ *  of a transformation matrix. If a matrix is built with
++ *  fromRotationTranslation, the returned quaternion will be the
++ *  same as the quaternion originally supplied.
++ * @param {quat} out Quaternion to receive the rotation component
++ * @param {mat4} mat Matrix to be decomposed (input)
++ * @return {quat} out
++ */
++mat4.getRotation = function (out, mat) {
++  // Algorithm taken from http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
++  var trace = mat[0] + mat[5] + mat[10];
++  var S = 0;
+ 
+-    var drawAcrossEdges = !(layer.layout['text-allow-overlap'] || layer.layout['icon-allow-overlap'] ||
+-        layer.layout['text-ignore-placement'] || layer.layout['icon-ignore-placement']);
++  if (trace > 0) { 
++    S = Math.sqrt(trace + 1.0) * 2;
++    out[3] = 0.25 * S;
++    out[0] = (mat[6] - mat[9]) / S;
++    out[1] = (mat[8] - mat[2]) / S; 
++    out[2] = (mat[1] - mat[4]) / S; 
++  } else if ((mat[0] > mat[5])&(mat[0] > mat[10])) { 
++    S = Math.sqrt(1.0 + mat[0] - mat[5] - mat[10]) * 2;
++    out[3] = (mat[6] - mat[9]) / S;
++    out[0] = 0.25 * S;
++    out[1] = (mat[1] + mat[4]) / S; 
++    out[2] = (mat[8] + mat[2]) / S; 
++  } else if (mat[5] > mat[10]) { 
++    S = Math.sqrt(1.0 + mat[5] - mat[0] - mat[10]) * 2;
++    out[3] = (mat[8] - mat[2]) / S;
++    out[0] = (mat[1] + mat[4]) / S; 
++    out[1] = 0.25 * S;
++    out[2] = (mat[6] + mat[9]) / S; 
++  } else { 
++    S = Math.sqrt(1.0 + mat[10] - mat[0] - mat[5]) * 2;
++    out[3] = (mat[1] - mat[4]) / S;
++    out[0] = (mat[8] + mat[2]) / S;
++    out[1] = (mat[6] + mat[9]) / S;
++    out[2] = 0.25 * S;
++  }
+ 
+-    var gl = painter.gl;
++  return out;
++};
+ 
+-    // Disable the stencil test so that labels aren't clipped to tile boundaries.
+-    //
+-    // Layers with features that may be drawn overlapping aren't clipped. These
+-    // layers are sorted in the y direction, and to draw the correct ordering near
+-    // tile edges the icons are included in both tiles and clipped when drawing.
+-    if (drawAcrossEdges) {
+-        gl.disable(gl.STENCIL_TEST);
+-    } else {
+-        gl.enable(gl.STENCIL_TEST);
+-    }
+-
+-    painter.setDepthSublayer(0);
+-    painter.depthMask(false);
+-    gl.disable(gl.DEPTH_TEST);
++/**
++ * Creates a matrix from a quaternion rotation, vector translation and vector scale
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *     mat4.scale(dest, scale)
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @param {vec3} s Scaling vector
++ * @returns {mat4} out
++ */
++mat4.fromRotationTranslationScale = function (out, q, v, s) {
++    // Quaternion math
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-    drawLayerSymbols(painter, source, layer, coords, false,
+-            layer.paint['icon-translate'],
+-            layer.paint['icon-translate-anchor'],
+-            layer.layout['icon-rotation-alignment'],
+-            layer.layout['icon-size'],
+-            layer.paint['icon-halo-width'],
+-            layer.paint['icon-halo-color'],
+-            layer.paint['icon-halo-blur'],
+-            layer.paint['icon-opacity'],
+-            layer.paint['icon-color']);
++        xx = x * x2,
++        xy = x * y2,
++        xz = x * z2,
++        yy = y * y2,
++        yz = y * z2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2,
++        sx = s[0],
++        sy = s[1],
++        sz = s[2];
+ 
+-    drawLayerSymbols(painter, source, layer, coords, true,
+-            layer.paint['text-translate'],
+-            layer.paint['text-translate-anchor'],
+-            layer.layout['text-rotation-alignment'],
+-            layer.layout['text-size'],
+-            layer.paint['text-halo-width'],
+-            layer.paint['text-halo-color'],
+-            layer.paint['text-halo-blur'],
+-            layer.paint['text-opacity'],
+-            layer.paint['text-color']);
++    out[0] = (1 - (yy + zz)) * sx;
++    out[1] = (xy + wz) * sx;
++    out[2] = (xz - wy) * sx;
++    out[3] = 0;
++    out[4] = (xy - wz) * sy;
++    out[5] = (1 - (xx + zz)) * sy;
++    out[6] = (yz + wx) * sy;
++    out[7] = 0;
++    out[8] = (xz + wy) * sz;
++    out[9] = (yz - wx) * sz;
++    out[10] = (1 - (xx + yy)) * sz;
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
+ 
+-    gl.enable(gl.DEPTH_TEST);
++    return out;
++};
+ 
+-    drawCollisionDebug(painter, source, layer, coords);
+-}
++/**
++ * Creates a matrix from a quaternion rotation, vector translation and vector scale, rotating and scaling around the given origin
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     mat4.translate(dest, origin);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *     mat4.scale(dest, scale)
++ *     mat4.translate(dest, negativeOrigin);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @param {vec3} s Scaling vector
++ * @param {vec3} o The origin vector around which to scale and rotate
++ * @returns {mat4} out
++ */
++mat4.fromRotationTranslationScaleOrigin = function (out, q, v, s, o) {
++  // Quaternion math
++  var x = q[0], y = q[1], z = q[2], w = q[3],
++      x2 = x + x,
++      y2 = y + y,
++      z2 = z + z,
+ 
+-function drawLayerSymbols(painter, source, layer, coords, isText,
+-        translate,
+-        translateAnchor,
+-        rotationAlignment,
+-        size,
+-        haloWidth,
+-        haloColor,
+-        haloBlur,
+-        opacity,
+-        color) {
++      xx = x * x2,
++      xy = x * y2,
++      xz = x * z2,
++      yy = y * y2,
++      yz = y * z2,
++      zz = z * z2,
++      wx = w * x2,
++      wy = w * y2,
++      wz = w * z2,
+ 
+-    haloColor = util.premultiply(haloColor);
+-    color = util.premultiply(color);
++      sx = s[0],
++      sy = s[1],
++      sz = s[2],
+ 
+-    for (var j = 0; j < coords.length; j++) {
+-        var tile = source.getTile(coords[j]);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bothBufferGroups = bucket.bufferGroups;
+-        var bufferGroups = isText ? bothBufferGroups.glyph : bothBufferGroups.icon;
+-        if (!bufferGroups.length) continue;
++      ox = o[0],
++      oy = o[1],
++      oz = o[2];
+ 
+-        painter.enableTileClippingMask(coords[j]);
+-        drawSymbol(painter, layer, coords[j].posMatrix, tile, bucket, bufferGroups, isText,
+-                isText || bucket.sdfIcons, !isText && bucket.iconsNeedLinear,
+-                isText ? bucket.adjustedTextSize : bucket.adjustedIconSize, bucket.fontstack,
+-                translate,
+-                translateAnchor,
+-                rotationAlignment,
+-                size,
+-                haloWidth,
+-                haloColor,
+-                haloBlur,
+-                opacity,
+-                color);
+-    }
+-}
++  out[0] = (1 - (yy + zz)) * sx;
++  out[1] = (xy + wz) * sx;
++  out[2] = (xz - wy) * sx;
++  out[3] = 0;
++  out[4] = (xy - wz) * sy;
++  out[5] = (1 - (xx + zz)) * sy;
++  out[6] = (yz + wx) * sy;
++  out[7] = 0;
++  out[8] = (xz + wy) * sz;
++  out[9] = (yz - wx) * sz;
++  out[10] = (1 - (xx + yy)) * sz;
++  out[11] = 0;
++  out[12] = v[0] + ox - (out[0] * ox + out[4] * oy + out[8] * oz);
++  out[13] = v[1] + oy - (out[1] * ox + out[5] * oy + out[9] * oz);
++  out[14] = v[2] + oz - (out[2] * ox + out[6] * oy + out[10] * oz);
++  out[15] = 1;
+ 
+-function drawSymbol(painter, layer, posMatrix, tile, bucket, bufferGroups, isText, sdf, iconsNeedLinear, adjustedSize, fontstack,
+-        translate,
+-        translateAnchor,
+-        rotationAlignment,
+-        size,
+-        haloWidth,
+-        haloColor,
+-        haloBlur,
+-        opacity,
+-        color) {
+-    var gl = painter.gl;
+-    var tr = painter.transform;
+-    var alignedWithMap = rotationAlignment === 'map';
++  return out;
++};
+ 
+-    var defaultSize = isText ? 24 : 1;
+-    var fontScale = size / defaultSize;
++/**
++ * Calculates a 4x4 matrix from the given quaternion
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat} q Quaternion to create matrix from
++ *
++ * @returns {mat4} out
++ */
++mat4.fromQuat = function (out, q) {
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-    var extrudeScale, s, gammaScale;
+-    if (alignedWithMap) {
+-        s = pixelsToTileUnits(tile, 1, painter.transform.zoom) * fontScale;
+-        gammaScale = 1 / Math.cos(tr._pitch);
+-        extrudeScale = [s, s];
+-    } else {
+-        s = painter.transform.altitude * fontScale;
+-        gammaScale = 1;
+-        extrudeScale = [ tr.pixelsToGLUnits[0] * s, tr.pixelsToGLUnits[1] * s];
+-    }
++        xx = x * x2,
++        yx = y * x2,
++        yy = y * y2,
++        zx = z * x2,
++        zy = z * y2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-    // calculate how much longer the real world distance is at the top of the screen
+-    // than at the middle of the screen.
+-    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
+-    var x = tr.height / 2 * Math.tan(tr._pitch);
+-    var extra = (topedgelength + x) / topedgelength - 1;
++    out[0] = 1 - yy - zz;
++    out[1] = yx + wz;
++    out[2] = zx - wy;
++    out[3] = 0;
+ 
+-    if (!isText && !painter.style.sprite.loaded())
+-        return;
++    out[4] = yx - wz;
++    out[5] = 1 - xx - zz;
++    out[6] = zy + wx;
++    out[7] = 0;
+ 
+-    var program = painter.useProgram(sdf ? 'sdf' : 'icon');
+-    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(posMatrix, tile, translate, translateAnchor));
+-    gl.uniform1i(program.u_skewed, alignedWithMap);
+-    gl.uniform1f(program.u_extra, extra);
+-    gl.uniform2fv(program.u_extrude_scale, extrudeScale);
++    out[8] = zx + wy;
++    out[9] = zy - wx;
++    out[10] = 1 - xx - yy;
++    out[11] = 0;
+ 
+-    gl.activeTexture(gl.TEXTURE0);
+-    gl.uniform1i(program.u_texture, 0);
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
+ 
+-    if (isText) {
+-        // use the fonstack used when parsing the tile, not the fontstack
+-        // at the current zoom level (layout['text-font']).
+-        var glyphAtlas = fontstack && painter.glyphSource.getGlyphAtlas(fontstack);
+-        if (!glyphAtlas) return;
++    return out;
++};
+ 
+-        glyphAtlas.updateTexture(gl);
+-        gl.uniform2f(program.u_texsize, glyphAtlas.width / 4, glyphAtlas.height / 4);
+-    } else {
+-        var mapMoving = painter.options.rotating || painter.options.zooming;
+-        var iconScaled = fontScale !== 1 || browser.devicePixelRatio !== painter.spriteAtlas.pixelRatio || iconsNeedLinear;
+-        var iconTransformed = alignedWithMap || painter.transform.pitch;
+-        painter.spriteAtlas.bind(gl, sdf || mapMoving || iconScaled || iconTransformed);
+-        gl.uniform2f(program.u_texsize, painter.spriteAtlas.width / 4, painter.spriteAtlas.height / 4);
+-    }
++/**
++ * Generates a frustum matrix with the given bounds
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {Number} left Left bound of the frustum
++ * @param {Number} right Right bound of the frustum
++ * @param {Number} bottom Bottom bound of the frustum
++ * @param {Number} top Top bound of the frustum
++ * @param {Number} near Near bound of the frustum
++ * @param {Number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.frustum = function (out, left, right, bottom, top, near, far) {
++    var rl = 1 / (right - left),
++        tb = 1 / (top - bottom),
++        nf = 1 / (near - far);
++    out[0] = (near * 2) * rl;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = (near * 2) * tb;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = (right + left) * rl;
++    out[9] = (top + bottom) * tb;
++    out[10] = (far + near) * nf;
++    out[11] = -1;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = (far * near * 2) * nf;
++    out[15] = 0;
++    return out;
++};
+ 
+-    // adjust min/max zooms for variable font sizes
+-    var zoomAdjust = Math.log(size / adjustedSize) / Math.LN2 || 0;
+-    gl.uniform1f(program.u_zoom, (painter.transform.zoom - zoomAdjust) * 10); // current zoom level
++/**
++ * Generates a perspective projection matrix with the given bounds
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {number} fovy Vertical field of view in radians
++ * @param {number} aspect Aspect ratio. typically viewport width/height
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.perspective = function (out, fovy, aspect, near, far) {
++    var f = 1.0 / Math.tan(fovy / 2),
++        nf = 1 / (near - far);
++    out[0] = f / aspect;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = f;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = (far + near) * nf;
++    out[11] = -1;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = (2 * far * near) * nf;
++    out[15] = 0;
++    return out;
++};
+ 
+-    gl.activeTexture(gl.TEXTURE1);
+-    painter.frameHistory.bind(gl);
+-    gl.uniform1i(program.u_fadetexture, 1);
++/**
++ * Generates a perspective projection matrix with the given field of view.
++ * This is primarily useful for generating projection matrices to be used
++ * with the still experiemental WebVR API.
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {Object} fov Object containing the following values: upDegrees, downDegrees, leftDegrees, rightDegrees
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.perspectiveFromFieldOfView = function (out, fov, near, far) {
++    var upTan = Math.tan(fov.upDegrees * Math.PI/180.0),
++        downTan = Math.tan(fov.downDegrees * Math.PI/180.0),
++        leftTan = Math.tan(fov.leftDegrees * Math.PI/180.0),
++        rightTan = Math.tan(fov.rightDegrees * Math.PI/180.0),
++        xScale = 2.0 / (leftTan + rightTan),
++        yScale = 2.0 / (upTan + downTan);
+ 
+-    var group;
++    out[0] = xScale;
++    out[1] = 0.0;
++    out[2] = 0.0;
++    out[3] = 0.0;
++    out[4] = 0.0;
++    out[5] = yScale;
++    out[6] = 0.0;
++    out[7] = 0.0;
++    out[8] = -((leftTan - rightTan) * xScale * 0.5);
++    out[9] = ((upTan - downTan) * yScale * 0.5);
++    out[10] = far / (near - far);
++    out[11] = -1.0;
++    out[12] = 0.0;
++    out[13] = 0.0;
++    out[14] = (far * near) / (near - far);
++    out[15] = 0.0;
++    return out;
++}
+ 
+-    if (sdf) {
+-        var sdfPx = 8;
+-        var blurOffset = 1.19;
+-        var haloOffset = 6;
+-        var gamma = 0.105 * defaultSize / size / browser.devicePixelRatio;
++/**
++ * Generates a orthogonal projection matrix with the given bounds
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {number} left Left bound of the frustum
++ * @param {number} right Right bound of the frustum
++ * @param {number} bottom Bottom bound of the frustum
++ * @param {number} top Top bound of the frustum
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.ortho = function (out, left, right, bottom, top, near, far) {
++    var lr = 1 / (left - right),
++        bt = 1 / (bottom - top),
++        nf = 1 / (near - far);
++    out[0] = -2 * lr;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = -2 * bt;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 2 * nf;
++    out[11] = 0;
++    out[12] = (left + right) * lr;
++    out[13] = (top + bottom) * bt;
++    out[14] = (far + near) * nf;
++    out[15] = 1;
++    return out;
++};
+ 
+-        if (haloWidth) {
+-            // Draw halo underneath the text.
+-            gl.uniform1f(program.u_gamma, (haloBlur * blurOffset / fontScale / sdfPx + gamma) * gammaScale);
+-            gl.uniform4fv(program.u_color, haloColor);
+-            gl.uniform1f(program.u_opacity, opacity);
+-            gl.uniform1f(program.u_buffer, (haloOffset - haloWidth / fontScale) / sdfPx);
++/**
++ * Generates a look-at matrix with the given eye position, focal point, and up axis
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {vec3} eye Position of the viewer
++ * @param {vec3} center Point the viewer is looking at
++ * @param {vec3} up vec3 pointing up
++ * @returns {mat4} out
++ */
++mat4.lookAt = function (out, eye, center, up) {
++    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
++        eyex = eye[0],
++        eyey = eye[1],
++        eyez = eye[2],
++        upx = up[0],
++        upy = up[1],
++        upz = up[2],
++        centerx = center[0],
++        centery = center[1],
++        centerz = center[2];
+ 
+-            for (var j = 0; j < bufferGroups.length; j++) {
+-                group = bufferGroups[j];
+-                group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-                gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-            }
+-        }
++    if (Math.abs(eyex - centerx) < glMatrix.EPSILON &&
++        Math.abs(eyey - centery) < glMatrix.EPSILON &&
++        Math.abs(eyez - centerz) < glMatrix.EPSILON) {
++        return mat4.identity(out);
++    }
+ 
+-        gl.uniform1f(program.u_gamma, gamma * gammaScale);
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, opacity);
+-        gl.uniform1f(program.u_buffer, (256 - 64) / 256);
++    z0 = eyex - centerx;
++    z1 = eyey - centery;
++    z2 = eyez - centerz;
+ 
+-        for (var i = 0; i < bufferGroups.length; i++) {
+-            group = bufferGroups[i];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-        }
++    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
++    z0 *= len;
++    z1 *= len;
++    z2 *= len;
+ 
++    x0 = upy * z2 - upz * z1;
++    x1 = upz * z0 - upx * z2;
++    x2 = upx * z1 - upy * z0;
++    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
++    if (!len) {
++        x0 = 0;
++        x1 = 0;
++        x2 = 0;
+     } else {
+-        gl.uniform1f(program.u_opacity, opacity);
+-        for (var k = 0; k < bufferGroups.length; k++) {
+-            group = bufferGroups[k];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-        }
++        len = 1 / len;
++        x0 *= len;
++        x1 *= len;
++        x2 *= len;
+     }
+-}
+-
+-},{"../source/pixels_to_tile_units":47,"../util/browser":105,"../util/util":119,"./draw_collision_debug":33}],39:[function(require,module,exports){
+-'use strict';
+ 
+-module.exports = FrameHistory;
++    y0 = z1 * x2 - z2 * x1;
++    y1 = z2 * x0 - z0 * x2;
++    y2 = z0 * x1 - z1 * x0;
+ 
+-function FrameHistory() {
+-    this.changeTimes = new Float64Array(256);
+-    this.changeOpacities = new Uint8Array(256);
+-    this.opacities = new Uint8ClampedArray(256);
+-    this.array = new Uint8Array(this.opacities.buffer);
++    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
++    if (!len) {
++        y0 = 0;
++        y1 = 0;
++        y2 = 0;
++    } else {
++        len = 1 / len;
++        y0 *= len;
++        y1 *= len;
++        y2 *= len;
++    }
+ 
+-    this.fadeDuration = 300;
+-    this.previousZoom = 0;
+-    this.firstFrame = true;
+-}
+-
+-FrameHistory.prototype.record = function(zoom) {
+-    var now = Date.now();
+-
+-    if (this.firstFrame) {
+-        now = 0;
+-        this.firstFrame = false;
+-    }
+-
+-    zoom = Math.floor(zoom * 10);
+-
+-    var z;
+-    if (zoom < this.previousZoom) {
+-        for (z = zoom + 1; z <= this.previousZoom; z++) {
+-            this.changeTimes[z] = now;
+-            this.changeOpacities[z] = this.opacities[z];
+-        }
+-    } else {
+-        for (z = zoom; z > this.previousZoom; z--) {
+-            this.changeTimes[z] = now;
+-            this.changeOpacities[z] = this.opacities[z];
+-        }
+-    }
+-
+-    for (z = 0; z < 256; z++) {
+-        var timeSince = now - this.changeTimes[z];
+-        var opacityChange = timeSince / this.fadeDuration * 255;
+-        if (z <= zoom) {
+-            this.opacities[z] = this.changeOpacities[z] + opacityChange;
+-        } else {
+-            this.opacities[z] = this.changeOpacities[z] - opacityChange;
+-        }
+-    }
++    out[0] = x0;
++    out[1] = y0;
++    out[2] = z0;
++    out[3] = 0;
++    out[4] = x1;
++    out[5] = y1;
++    out[6] = z1;
++    out[7] = 0;
++    out[8] = x2;
++    out[9] = y2;
++    out[10] = z2;
++    out[11] = 0;
++    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
++    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
++    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
++    out[15] = 1;
+ 
+-    this.changed = true;
+-    this.previousZoom = zoom;
++    return out;
+ };
+ 
+-FrameHistory.prototype.bind = function(gl) {
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+-        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, 256, 1, 0, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
+-
+-    } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        if (this.changed) {
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 256, 1, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
+-            this.changed = false;
+-        }
+-    }
++/**
++ * Returns a string representation of a mat4
++ *
++ * @param {mat4} mat matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat4.str = function (a) {
++    return 'mat4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ', ' +
++                    a[4] + ', ' + a[5] + ', ' + a[6] + ', ' + a[7] + ', ' +
++                    a[8] + ', ' + a[9] + ', ' + a[10] + ', ' + a[11] + ', ' +
++                    a[12] + ', ' + a[13] + ', ' + a[14] + ', ' + a[15] + ')';
+ };
+ 
+-},{}],40:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = LineAtlas;
++/**
++ * Returns Frobenius norm of a mat4
++ *
++ * @param {mat4} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
++ */
++mat4.frob = function (a) {
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2) + Math.pow(a[9], 2) + Math.pow(a[10], 2) + Math.pow(a[11], 2) + Math.pow(a[12], 2) + Math.pow(a[13], 2) + Math.pow(a[14], 2) + Math.pow(a[15], 2) ))
++};
+ 
+ /**
+- * A LineAtlas lets us reuse rendered dashed lines
+- * by writing many of them to a texture and then fetching their positions
+- * using .getDash.
++ * Adds two mat4's
+  *
+- * @param {number} width
+- * @param {number} height
+- * @private
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
+  */
+-function LineAtlas(width, height) {
+-    this.width = width;
+-    this.height = height;
+-    this.nextRow = 0;
++mat4.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    out[4] = a[4] + b[4];
++    out[5] = a[5] + b[5];
++    out[6] = a[6] + b[6];
++    out[7] = a[7] + b[7];
++    out[8] = a[8] + b[8];
++    out[9] = a[9] + b[9];
++    out[10] = a[10] + b[10];
++    out[11] = a[11] + b[11];
++    out[12] = a[12] + b[12];
++    out[13] = a[13] + b[13];
++    out[14] = a[14] + b[14];
++    out[15] = a[15] + b[15];
++    return out;
++};
+ 
+-    this.bytes = 4;
+-    this.data = new Uint8Array(this.width * this.height * this.bytes);
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++mat4.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    out[4] = a[4] - b[4];
++    out[5] = a[5] - b[5];
++    out[6] = a[6] - b[6];
++    out[7] = a[7] - b[7];
++    out[8] = a[8] - b[8];
++    out[9] = a[9] - b[9];
++    out[10] = a[10] - b[10];
++    out[11] = a[11] - b[11];
++    out[12] = a[12] - b[12];
++    out[13] = a[13] - b[13];
++    out[14] = a[14] - b[14];
++    out[15] = a[15] - b[15];
++    return out;
++};
+ 
+-    this.positions = {};
+-}
++/**
++ * Alias for {@link mat4.subtract}
++ * @function
++ */
++mat4.sub = mat4.subtract;
+ 
+-LineAtlas.prototype.setSprite = function(sprite) {
+-    this.sprite = sprite;
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat4} out
++ */
++mat4.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    out[4] = a[4] * b;
++    out[5] = a[5] * b;
++    out[6] = a[6] * b;
++    out[7] = a[7] * b;
++    out[8] = a[8] * b;
++    out[9] = a[9] * b;
++    out[10] = a[10] * b;
++    out[11] = a[11] * b;
++    out[12] = a[12] * b;
++    out[13] = a[13] * b;
++    out[14] = a[14] * b;
++    out[15] = a[15] * b;
++    return out;
+ };
+ 
+ /**
+- * Get or create a dash line pattern.
++ * Adds two mat4's after multiplying each element of the second operand by a scalar value.
+  *
+- * @param {Array<number>} dasharray
+- * @param {boolean} round whether to add circle caps in between dash segments
+- * @returns {Object} position of dash texture in { y, height, width }
+- * @private
++ * @param {mat4} out the receiving vector
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat4} out
+  */
+-LineAtlas.prototype.getDash = function(dasharray, round) {
+-    var key = dasharray.join(",") + round;
++mat4.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    out[4] = a[4] + (b[4] * scale);
++    out[5] = a[5] + (b[5] * scale);
++    out[6] = a[6] + (b[6] * scale);
++    out[7] = a[7] + (b[7] * scale);
++    out[8] = a[8] + (b[8] * scale);
++    out[9] = a[9] + (b[9] * scale);
++    out[10] = a[10] + (b[10] * scale);
++    out[11] = a[11] + (b[11] * scale);
++    out[12] = a[12] + (b[12] * scale);
++    out[13] = a[13] + (b[13] * scale);
++    out[14] = a[14] + (b[14] * scale);
++    out[15] = a[15] + (b[15] * scale);
++    return out;
++};
+ 
+-    if (!this.positions[key]) {
+-        this.positions[key] = this.addDash(dasharray, round);
+-    }
+-    return this.positions[key];
++/**
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {mat4} a The first matrix.
++ * @param {mat4} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat4.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && 
++           a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && 
++           a[8] === b[8] && a[9] === b[9] && a[10] === b[10] && a[11] === b[11] &&
++           a[12] === b[12] && a[13] === b[13] && a[14] === b[14] && a[15] === b[15];
+ };
+ 
+-LineAtlas.prototype.addDash = function(dasharray, round) {
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat4} a The first matrix.
++ * @param {mat4} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat4.equals = function (a, b) {
++    var a0  = a[0],  a1  = a[1],  a2  = a[2],  a3  = a[3],
++        a4  = a[4],  a5  = a[5],  a6  = a[6],  a7  = a[7], 
++        a8  = a[8],  a9  = a[9],  a10 = a[10], a11 = a[11], 
++        a12 = a[12], a13 = a[13], a14 = a[14], a15 = a[15];
+ 
+-    var n = round ? 7 : 0;
+-    var height = 2 * n + 1;
+-    var offset = 128;
++    var b0  = b[0],  b1  = b[1],  b2  = b[2],  b3  = b[3],
++        b4  = b[4],  b5  = b[5],  b6  = b[6],  b7  = b[7], 
++        b8  = b[8],  b9  = b[9],  b10 = b[10], b11 = b[11], 
++        b12 = b[12], b13 = b[13], b14 = b[14], b15 = b[15];
+ 
+-    if (this.nextRow + height > this.height) {
+-        console.warn('LineAtlas out of space');
+-        return null;
+-    }
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
++            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
++            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
++            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
++            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
++            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)) &&
++            Math.abs(a9 - b9) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a9), Math.abs(b9)) &&
++            Math.abs(a10 - b10) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a10), Math.abs(b10)) &&
++            Math.abs(a11 - b11) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a11), Math.abs(b11)) &&
++            Math.abs(a12 - b12) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a12), Math.abs(b12)) &&
++            Math.abs(a13 - b13) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a13), Math.abs(b13)) &&
++            Math.abs(a14 - b14) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a14), Math.abs(b14)) &&
++            Math.abs(a15 - b15) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a15), Math.abs(b15)));
++};
+ 
+-    var length = 0;
+-    for (var i = 0; i < dasharray.length; i++) {
+-        length += dasharray[i];
+-    }
+ 
+-    var stretch = this.width / length;
+-    var halfWidth = stretch / 2;
+ 
+-    // If dasharray has an odd length, both the first and last parts
+-    // are dashes and should be joined seamlessly.
+-    var oddLength = dasharray.length % 2 === 1;
++module.exports = mat4;
+ 
+-    for (var y = -n; y <= n; y++) {
+-        var row = this.nextRow + n + y;
+-        var index = this.width * row;
++},{"./common.js":25}],30:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-        var left = oddLength ? -dasharray[dasharray.length - 1] : 0;
+-        var right = dasharray[0];
+-        var partIndex = 1;
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-        for (var x = 0; x < this.width; x++) {
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-            while (right < x / stretch) {
+-                left = right;
+-                right = right + dasharray[partIndex];
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-                if (oddLength && partIndex === dasharray.length - 1) {
+-                    right += dasharray[0];
+-                }
++var glMatrix = require("./common.js");
++var mat3 = require("./mat3.js");
++var vec3 = require("./vec3.js");
++var vec4 = require("./vec4.js");
+ 
+-                partIndex++;
+-            }
++/**
++ * @class Quaternion
++ * @name quat
++ */
++var quat = {};
+ 
+-            var distLeft = Math.abs(x - left * stretch);
+-            var distRight = Math.abs(x - right * stretch);
+-            var dist = Math.min(distLeft, distRight);
+-            var inside = (partIndex % 2) === 1;
+-            var signedDistance;
++/**
++ * Creates a new identity quat
++ *
++ * @returns {quat} a new quaternion
++ */
++quat.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
++};
+ 
+-            if (round) {
+-                // Add circle caps
+-                var distMiddle = n ? y / n * (halfWidth + 1) : 0;
+-                if (inside) {
+-                    var distEdge = halfWidth - Math.abs(distMiddle);
+-                    signedDistance = Math.sqrt(dist * dist + distEdge * distEdge);
+-                } else {
+-                    signedDistance = halfWidth - Math.sqrt(dist * dist + distMiddle * distMiddle);
+-                }
+-            } else {
+-                signedDistance = (inside ? 1 : -1) * dist;
+-            }
++/**
++ * Sets a quaternion to represent the shortest rotation from one
++ * vector to another.
++ *
++ * Both vectors are assumed to be unit length.
++ *
++ * @param {quat} out the receiving quaternion.
++ * @param {vec3} a the initial vector
++ * @param {vec3} b the destination vector
++ * @returns {quat} out
++ */
++quat.rotationTo = (function() {
++    var tmpvec3 = vec3.create();
++    var xUnitVec3 = vec3.fromValues(1,0,0);
++    var yUnitVec3 = vec3.fromValues(0,1,0);
+ 
+-            this.data[3 + (index + x) * 4] = Math.max(0, Math.min(255, signedDistance + offset));
++    return function(out, a, b) {
++        var dot = vec3.dot(a, b);
++        if (dot < -0.999999) {
++            vec3.cross(tmpvec3, xUnitVec3, a);
++            if (vec3.length(tmpvec3) < 0.000001)
++                vec3.cross(tmpvec3, yUnitVec3, a);
++            vec3.normalize(tmpvec3, tmpvec3);
++            quat.setAxisAngle(out, tmpvec3, Math.PI);
++            return out;
++        } else if (dot > 0.999999) {
++            out[0] = 0;
++            out[1] = 0;
++            out[2] = 0;
++            out[3] = 1;
++            return out;
++        } else {
++            vec3.cross(tmpvec3, a, b);
++            out[0] = tmpvec3[0];
++            out[1] = tmpvec3[1];
++            out[2] = tmpvec3[2];
++            out[3] = 1 + dot;
++            return quat.normalize(out, out);
+         }
+-    }
+-
+-    var pos = {
+-        y: (this.nextRow + n + 0.5) / this.height,
+-        height: 2 * n / this.height,
+-        width: length
+     };
++})();
+ 
+-    this.nextRow += height;
+-    this.dirty = true;
++/**
++ * Sets the specified quaternion with values corresponding to the given
++ * axes. Each axis is a vec3 and is expected to be unit length and
++ * perpendicular to all other specified axes.
++ *
++ * @param {vec3} view  the vector representing the viewing direction
++ * @param {vec3} right the vector representing the local "right" direction
++ * @param {vec3} up    the vector representing the local "up" direction
++ * @returns {quat} out
++ */
++quat.setAxes = (function() {
++    var matr = mat3.create();
+ 
+-    return pos;
+-};
++    return function(out, view, right, up) {
++        matr[0] = right[0];
++        matr[3] = right[1];
++        matr[6] = right[2];
+ 
+-LineAtlas.prototype.bind = function(gl) {
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, this.width, this.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
++        matr[1] = up[0];
++        matr[4] = up[1];
++        matr[7] = up[2];
+ 
+-    } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        matr[2] = -view[0];
++        matr[5] = -view[1];
++        matr[8] = -view[2];
+ 
+-        if (this.dirty) {
+-            this.dirty = false;
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
+-        }
+-    }
+-};
++        return quat.normalize(out, quat.fromMat3(out, matr));
++    };
++})();
+ 
+-},{}],41:[function(require,module,exports){
+-'use strict';
++/**
++ * Creates a new quat initialized with values from an existing quaternion
++ *
++ * @param {quat} a quaternion to clone
++ * @returns {quat} a new quaternion
++ * @function
++ */
++quat.clone = vec4.clone;
+ 
+-var browser = require('../util/browser');
+-var mat4 = require('gl-matrix').mat4;
+-var FrameHistory = require('./frame_history');
+-var TilePyramid = require('../source/tile_pyramid');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+-var util = require('../util/util');
+-var StructArrayType = require('../util/struct_array');
+-var Buffer = require('../data/buffer');
+-var VertexArrayObject = require('./vertex_array_object');
+-var RasterBoundsArray = require('./draw_raster').RasterBoundsArray;
++/**
++ * Creates a new quat initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {quat} a new quaternion
++ * @function
++ */
++quat.fromValues = vec4.fromValues;
+ 
+-module.exports = Painter;
++/**
++ * Copy the values from one quat to another
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the source quaternion
++ * @returns {quat} out
++ * @function
++ */
++quat.copy = vec4.copy;
+ 
+ /**
+- * Initialize a new painter object.
++ * Set the components of a quat to the given values
+  *
+- * @param {Canvas} gl an experimental-webgl drawing context
+- * @private
++ * @param {quat} out the receiving quaternion
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {quat} out
++ * @function
+  */
+-function Painter(gl, transform) {
+-    this.gl = gl;
+-    this.transform = transform;
++quat.set = vec4.set;
+ 
+-    this.reusableTextures = {};
+-    this.preFbos = {};
+-
+-    this.frameHistory = new FrameHistory();
+-
+-    this.setup();
+-
+-    // Within each layer there are multiple distinct z-planes that can be drawn to.
+-    // This is implemented using the WebGL depth buffer.
+-    this.numSublayers = TilePyramid.maxUnderzooming + TilePyramid.maxOverzooming + 1;
+-    this.depthEpsilon = 1 / Math.pow(2, 16);
++/**
++ * Set a quat to the identity quaternion
++ *
++ * @param {quat} out the receiving quaternion
++ * @returns {quat} out
++ */
++quat.identity = function(out) {
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
++};
+ 
+-    this.lineWidthRange = gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE);
+-}
++/**
++ * Sets a quat from the given angle and rotation axis,
++ * then returns it.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {vec3} axis the axis around which to rotate
++ * @param {Number} rad the angle in radians
++ * @returns {quat} out
++ **/
++quat.setAxisAngle = function(out, axis, rad) {
++    rad = rad * 0.5;
++    var s = Math.sin(rad);
++    out[0] = s * axis[0];
++    out[1] = s * axis[1];
++    out[2] = s * axis[2];
++    out[3] = Math.cos(rad);
++    return out;
++};
+ 
+-util.extend(Painter.prototype, require('./painter/use_program'));
++/**
++ * Gets the rotation axis and angle for a given
++ *  quaternion. If a quaternion is created with
++ *  setAxisAngle, this method will return the same
++ *  values as providied in the original parameter list
++ *  OR functionally equivalent values.
++ * Example: The quaternion formed by axis [0, 0, 1] and
++ *  angle -90 is the same as the quaternion formed by
++ *  [0, 0, 1] and 270. This method favors the latter.
++ * @param  {vec3} out_axis  Vector receiving the axis of rotation
++ * @param  {quat} q     Quaternion to be decomposed
++ * @return {Number}     Angle, in radians, of the rotation
++ */
++quat.getAxisAngle = function(out_axis, q) {
++    var rad = Math.acos(q[3]) * 2.0;
++    var s = Math.sin(rad / 2.0);
++    if (s != 0.0) {
++        out_axis[0] = q[0] / s;
++        out_axis[1] = q[1] / s;
++        out_axis[2] = q[2] / s;
++    } else {
++        // If s is zero, return any axis (no rotation - axis does not matter)
++        out_axis[0] = 1;
++        out_axis[1] = 0;
++        out_axis[2] = 0;
++    }
++    return rad;
++};
+ 
+-/*
+- * Update the GL viewport, projection matrix, and transforms to compensate
+- * for a new width and height value.
++/**
++ * Adds two quat's
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @returns {quat} out
++ * @function
+  */
+-Painter.prototype.resize = function(width, height) {
+-    var gl = this.gl;
++quat.add = vec4.add;
+ 
+-    this.width = width * browser.devicePixelRatio;
+-    this.height = height * browser.devicePixelRatio;
+-    gl.viewport(0, 0, this.width, this.height);
++/**
++ * Multiplies two quat's
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @returns {quat} out
++ */
++quat.multiply = function(out, a, b) {
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bx = b[0], by = b[1], bz = b[2], bw = b[3];
+ 
++    out[0] = ax * bw + aw * bx + ay * bz - az * by;
++    out[1] = ay * bw + aw * by + az * bx - ax * bz;
++    out[2] = az * bw + aw * bz + ax * by - ay * bx;
++    out[3] = aw * bw - ax * bx - ay * by - az * bz;
++    return out;
+ };
+ 
+-Painter.prototype.setup = function() {
+-    var gl = this.gl;
+-
+-    gl.verbose = true;
+-
+-    // We are blending the new pixels *behind* the existing pixels. That way we can
+-    // draw front-to-back and use then stencil buffer to cull opaque pixels early.
+-    gl.enable(gl.BLEND);
+-    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
++/**
++ * Alias for {@link quat.multiply}
++ * @function
++ */
++quat.mul = quat.multiply;
+ 
+-    gl.enable(gl.STENCIL_TEST);
++/**
++ * Scales a quat by a scalar number
++ *
++ * @param {quat} out the receiving vector
++ * @param {quat} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {quat} out
++ * @function
++ */
++quat.scale = vec4.scale;
+ 
+-    gl.enable(gl.DEPTH_TEST);
+-    gl.depthFunc(gl.LEQUAL);
++/**
++ * Rotates a quaternion by the given angle about the X axis
++ *
++ * @param {quat} out quat receiving operation result
++ * @param {quat} a quat to rotate
++ * @param {number} rad angle (in radians) to rotate
++ * @returns {quat} out
++ */
++quat.rotateX = function (out, a, rad) {
++    rad *= 0.5; 
+ 
+-    this._depthMask = false;
+-    gl.depthMask(false);
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bx = Math.sin(rad), bw = Math.cos(rad);
+ 
+-    var PosArray = this.PosArray = new StructArrayType({
+-        members: [{ name: 'a_pos', type: 'Int16', components: 2 }]
+-    });
++    out[0] = ax * bw + aw * bx;
++    out[1] = ay * bw + az * bx;
++    out[2] = az * bw - ay * bx;
++    out[3] = aw * bw - ax * bx;
++    return out;
++};
+ 
+-    var tileExtentArray = new PosArray();
+-    tileExtentArray.emplaceBack(0, 0);
+-    tileExtentArray.emplaceBack(EXTENT, 0);
+-    tileExtentArray.emplaceBack(0, EXTENT);
+-    tileExtentArray.emplaceBack(EXTENT, EXTENT);
+-    this.tileExtentBuffer = new Buffer(tileExtentArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
+-    this.tileExtentVAO = new VertexArrayObject();
+-    this.tileExtentPatternVAO = new VertexArrayObject();
++/**
++ * Rotates a quaternion by the given angle about the Y axis
++ *
++ * @param {quat} out quat receiving operation result
++ * @param {quat} a quat to rotate
++ * @param {number} rad angle (in radians) to rotate
++ * @returns {quat} out
++ */
++quat.rotateY = function (out, a, rad) {
++    rad *= 0.5; 
+ 
+-    var debugArray = new PosArray();
+-    debugArray.emplaceBack(0, 0);
+-    debugArray.emplaceBack(EXTENT, 0);
+-    debugArray.emplaceBack(EXTENT, EXTENT);
+-    debugArray.emplaceBack(0, EXTENT);
+-    debugArray.emplaceBack(0, 0);
+-    this.debugBuffer = new Buffer(debugArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
+-    this.debugVAO = new VertexArrayObject();
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        by = Math.sin(rad), bw = Math.cos(rad);
+ 
+-    var rasterBoundsArray = new RasterBoundsArray();
+-    rasterBoundsArray.emplaceBack(0, 0, 0, 0);
+-    rasterBoundsArray.emplaceBack(EXTENT, 0, 32767, 0);
+-    rasterBoundsArray.emplaceBack(0, EXTENT, 0, 32767);
+-    rasterBoundsArray.emplaceBack(EXTENT, EXTENT, 32767, 32767);
+-    this.rasterBoundsBuffer = new Buffer(rasterBoundsArray.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
+-    this.rasterBoundsVAO = new VertexArrayObject();
++    out[0] = ax * bw - az * by;
++    out[1] = ay * bw + aw * by;
++    out[2] = az * bw + ax * by;
++    out[3] = aw * bw - ay * by;
++    return out;
+ };
+ 
+-/*
+- * Reset the color buffers of the drawing canvas.
++/**
++ * Rotates a quaternion by the given angle about the Z axis
++ *
++ * @param {quat} out quat receiving operation result
++ * @param {quat} a quat to rotate
++ * @param {number} rad angle (in radians) to rotate
++ * @returns {quat} out
+  */
+-Painter.prototype.clearColor = function() {
+-    var gl = this.gl;
+-    gl.clearColor(0, 0, 0, 0);
+-    gl.clear(gl.COLOR_BUFFER_BIT);
++quat.rotateZ = function (out, a, rad) {
++    rad *= 0.5; 
++
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bz = Math.sin(rad), bw = Math.cos(rad);
++
++    out[0] = ax * bw + ay * bz;
++    out[1] = ay * bw - ax * bz;
++    out[2] = az * bw + aw * bz;
++    out[3] = aw * bw - az * bz;
++    return out;
+ };
+ 
+-/*
+- * Reset the drawing canvas by clearing the stencil buffer so that we can draw
+- * new tiles at the same location, while retaining previously drawn pixels.
++/**
++ * Calculates the W component of a quat from the X, Y, and Z components.
++ * Assumes that quaternion is 1 unit in length.
++ * Any existing W component will be ignored.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quat to calculate W component of
++ * @returns {quat} out
+  */
+-Painter.prototype.clearStencil = function() {
+-    var gl = this.gl;
+-    gl.clearStencil(0x0);
+-    gl.stencilMask(0xFF);
+-    gl.clear(gl.STENCIL_BUFFER_BIT);
+-};
++quat.calculateW = function (out, a) {
++    var x = a[0], y = a[1], z = a[2];
+ 
+-Painter.prototype.clearDepth = function() {
+-    var gl = this.gl;
+-    gl.clearDepth(1);
+-    this.depthMask(true);
+-    gl.clear(gl.DEPTH_BUFFER_BIT);
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    out[3] = Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));
++    return out;
+ };
+ 
+-Painter.prototype._renderTileClippingMasks = function(coords) {
+-    var gl = this.gl;
+-    gl.colorMask(false, false, false, false);
+-    this.depthMask(false);
+-    gl.disable(gl.DEPTH_TEST);
+-    gl.enable(gl.STENCIL_TEST);
++/**
++ * Calculates the dot product of two quat's
++ *
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @returns {Number} dot product of a and b
++ * @function
++ */
++quat.dot = vec4.dot;
+ 
+-    // Only write clipping IDs to the last 5 bits. The first three are used for drawing fills.
+-    gl.stencilMask(0xF8);
+-    // Tests will always pass, and ref value will be written to stencil buffer.
+-    gl.stencilOp(gl.KEEP, gl.KEEP, gl.REPLACE);
++/**
++ * Performs a linear interpolation between two quat's
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {quat} out
++ * @function
++ */
++quat.lerp = vec4.lerp;
+ 
+-    var idNext = 1;
+-    this._tileClippingMaskIDs = {};
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
+-        var id = this._tileClippingMaskIDs[coord.id] = (idNext++) << 3;
++/**
++ * Performs a spherical linear interpolation between two quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {quat} out
++ */
++quat.slerp = function (out, a, b, t) {
++    // benchmarks:
++    //    http://jsperf.com/quaternion-slerp-implementations
+ 
+-        gl.stencilFunc(gl.ALWAYS, id, 0xF8);
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bx = b[0], by = b[1], bz = b[2], bw = b[3];
+ 
+-        var program = this.useProgram('fill');
+-        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
++    var        omega, cosom, sinom, scale0, scale1;
+ 
+-        // Draw the clipping mask
+-        this.tileExtentVAO.bind(gl, program, this.tileExtentBuffer);
+-        gl.drawArrays(gl.TRIANGLE_STRIP, 0, this.tileExtentBuffer.length);
++    // calc cosine
++    cosom = ax * bx + ay * by + az * bz + aw * bw;
++    // adjust signs (if necessary)
++    if ( cosom < 0.0 ) {
++        cosom = -cosom;
++        bx = - bx;
++        by = - by;
++        bz = - bz;
++        bw = - bw;
+     }
+-
+-    gl.stencilMask(0x00);
+-    gl.colorMask(true, true, true, true);
+-    this.depthMask(true);
+-    gl.enable(gl.DEPTH_TEST);
++    // calculate coefficients
++    if ( (1.0 - cosom) > 0.000001 ) {
++        // standard case (slerp)
++        omega  = Math.acos(cosom);
++        sinom  = Math.sin(omega);
++        scale0 = Math.sin((1.0 - t) * omega) / sinom;
++        scale1 = Math.sin(t * omega) / sinom;
++    } else {        
++        // "from" and "to" quaternions are very close 
++        //  ... so we can do a linear interpolation
++        scale0 = 1.0 - t;
++        scale1 = t;
++    }
++    // calculate final values
++    out[0] = scale0 * ax + scale1 * bx;
++    out[1] = scale0 * ay + scale1 * by;
++    out[2] = scale0 * az + scale1 * bz;
++    out[3] = scale0 * aw + scale1 * bw;
++    
++    return out;
+ };
+ 
+-Painter.prototype.enableTileClippingMask = function(coord) {
+-    var gl = this.gl;
+-    gl.stencilFunc(gl.EQUAL, this._tileClippingMaskIDs[coord.id], 0xF8);
+-};
++/**
++ * Performs a spherical linear interpolation with two control points
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {quat} c the third operand
++ * @param {quat} d the fourth operand
++ * @param {Number} t interpolation amount
++ * @returns {quat} out
++ */
++quat.sqlerp = (function () {
++  var temp1 = quat.create();
++  var temp2 = quat.create();
++  
++  return function (out, a, b, c, d, t) {
++    quat.slerp(temp1, a, d, t);
++    quat.slerp(temp2, b, c, t);
++    quat.slerp(out, temp1, temp2, 2 * t * (1 - t));
++    
++    return out;
++  };
++}());
+ 
+-// Overridden by headless tests.
+-Painter.prototype.prepareBuffers = function() {};
+-Painter.prototype.bindDefaultFramebuffer = function() {
+-    var gl = this.gl;
+-    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+-};
++/**
++ * Calculates the inverse of a quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quat to calculate inverse of
++ * @returns {quat} out
++ */
++quat.invert = function(out, a) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++        dot = a0*a0 + a1*a1 + a2*a2 + a3*a3,
++        invDot = dot ? 1.0/dot : 0;
++    
++    // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0
+ 
+-var draw = {
+-    symbol: require('./draw_symbol'),
+-    circle: require('./draw_circle'),
+-    line: require('./draw_line'),
+-    fill: require('./draw_fill'),
+-    raster: require('./draw_raster'),
+-    background: require('./draw_background'),
+-    debug: require('./draw_debug')
++    out[0] = -a0*invDot;
++    out[1] = -a1*invDot;
++    out[2] = -a2*invDot;
++    out[3] = a3*invDot;
++    return out;
+ };
+ 
+-Painter.prototype.render = function(style, options) {
+-    this.style = style;
+-    this.options = options;
+-
+-    this.lineAtlas = style.lineAtlas;
++/**
++ * Calculates the conjugate of a quat
++ * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quat to calculate conjugate of
++ * @returns {quat} out
++ */
++quat.conjugate = function (out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-    this.spriteAtlas = style.spriteAtlas;
+-    this.spriteAtlas.setSprite(style.sprite);
++/**
++ * Calculates the length of a quat
++ *
++ * @param {quat} a vector to calculate length of
++ * @returns {Number} length of a
++ * @function
++ */
++quat.length = vec4.length;
+ 
+-    this.glyphSource = style.glyphSource;
++/**
++ * Alias for {@link quat.length}
++ * @function
++ */
++quat.len = quat.length;
+ 
+-    this.frameHistory.record(this.transform.zoom);
++/**
++ * Calculates the squared length of a quat
++ *
++ * @param {quat} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ * @function
++ */
++quat.squaredLength = vec4.squaredLength;
+ 
+-    this.prepareBuffers();
+-    this.clearColor();
+-    this.clearDepth();
++/**
++ * Alias for {@link quat.squaredLength}
++ * @function
++ */
++quat.sqrLen = quat.squaredLength;
+ 
+-    this.showOverdrawInspector(options.showOverdrawInspector);
++/**
++ * Normalize a quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quaternion to normalize
++ * @returns {quat} out
++ * @function
++ */
++quat.normalize = vec4.normalize;
+ 
+-    this.depthRange = (style._order.length + 2) * this.numSublayers * this.depthEpsilon;
++/**
++ * Creates a quaternion from the given 3x3 rotation matrix.
++ *
++ * NOTE: The resultant quaternion is not normalized, so you should be sure
++ * to renormalize the quaternion yourself where necessary.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {mat3} m rotation matrix
++ * @returns {quat} out
++ * @function
++ */
++quat.fromMat3 = function(out, m) {
++    // Algorithm in Ken Shoemake's article in 1987 SIGGRAPH course notes
++    // article "Quaternion Calculus and Fast Animation".
++    var fTrace = m[0] + m[4] + m[8];
++    var fRoot;
+ 
+-    this.renderPass({isOpaquePass: true});
+-    this.renderPass({isOpaquePass: false});
++    if ( fTrace > 0.0 ) {
++        // |w| > 1/2, may as well choose w > 1/2
++        fRoot = Math.sqrt(fTrace + 1.0);  // 2w
++        out[3] = 0.5 * fRoot;
++        fRoot = 0.5/fRoot;  // 1/(4w)
++        out[0] = (m[5]-m[7])*fRoot;
++        out[1] = (m[6]-m[2])*fRoot;
++        out[2] = (m[1]-m[3])*fRoot;
++    } else {
++        // |w| <= 1/2
++        var i = 0;
++        if ( m[4] > m[0] )
++          i = 1;
++        if ( m[8] > m[i*3+i] )
++          i = 2;
++        var j = (i+1)%3;
++        var k = (i+2)%3;
++        
++        fRoot = Math.sqrt(m[i*3+i]-m[j*3+j]-m[k*3+k] + 1.0);
++        out[i] = 0.5 * fRoot;
++        fRoot = 0.5 / fRoot;
++        out[3] = (m[j*3+k] - m[k*3+j]) * fRoot;
++        out[j] = (m[j*3+i] + m[i*3+j]) * fRoot;
++        out[k] = (m[k*3+i] + m[i*3+k]) * fRoot;
++    }
++    
++    return out;
+ };
+ 
+-Painter.prototype.renderPass = function(options) {
+-    var groups = this.style._groups;
+-    var isOpaquePass = options.isOpaquePass;
+-    this.currentLayer = isOpaquePass ? this.style._order.length : -1;
+-
+-    for (var i = 0; i < groups.length; i++) {
+-        var group = groups[isOpaquePass ? groups.length - 1 - i : i];
+-        var source = this.style.sources[group.source];
+-
+-        var j;
+-        var coords = [];
+-        if (source) {
+-            coords = source.getVisibleCoordinates();
+-            for (j = 0; j < coords.length; j++) {
+-                coords[j].posMatrix = this.transform.calculatePosMatrix(coords[j], source.maxzoom);
+-            }
+-            this.clearStencil();
+-            if (source.prepare) source.prepare();
+-            if (source.isTileClipped) {
+-                this._renderTileClippingMasks(coords);
+-            }
+-        }
++/**
++ * Returns a string representation of a quatenion
++ *
++ * @param {quat} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++quat.str = function (a) {
++    return 'quat(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
++};
+ 
+-        if (isOpaquePass) {
+-            if (!this._showOverdrawInspector) {
+-                this.gl.disable(this.gl.BLEND);
+-            }
+-            this.isOpaquePass = true;
+-        } else {
+-            this.gl.enable(this.gl.BLEND);
+-            this.isOpaquePass = false;
+-            coords.reverse();
+-        }
++/**
++ * Returns whether or not the quaternions have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {quat} a The first quaternion.
++ * @param {quat} b The second quaternion.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++quat.exactEquals = vec4.exactEquals;
+ 
+-        for (j = 0; j < group.length; j++) {
+-            var layer = group[isOpaquePass ? group.length - 1 - j : j];
+-            this.currentLayer += isOpaquePass ? -1 : 1;
+-            this.renderLayer(this, source, layer, coords);
+-        }
++/**
++ * Returns whether or not the quaternions have approximately the same elements in the same position.
++ *
++ * @param {quat} a The first vector.
++ * @param {quat} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++quat.equals = vec4.equals;
+ 
+-        if (source) {
+-            draw.debug(this, source, coords);
+-        }
+-    }
+-};
++module.exports = quat;
+ 
+-Painter.prototype.depthMask = function(mask) {
+-    if (mask !== this._depthMask) {
+-        this._depthMask = mask;
+-        this.gl.depthMask(mask);
+-    }
+-};
++},{"./common.js":25,"./mat3.js":28,"./vec3.js":32,"./vec4.js":33}],31:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-Painter.prototype.renderLayer = function(painter, source, layer, coords) {
+-    if (layer.isHidden(this.transform.zoom)) return;
+-    if (layer.type !== 'background' && !coords.length) return;
+-    this.id = layer.id;
+-    draw[layer.type](painter, source, layer, coords);
+-};
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-Painter.prototype.setDepthSublayer = function(n) {
+-    var farDepth = 1 - ((1 + this.currentLayer) * this.numSublayers + n) * this.depthEpsilon;
+-    var nearDepth = farDepth - 1 + this.depthRange;
+-    this.gl.depthRange(nearDepth, farDepth);
+-};
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-Painter.prototype.translatePosMatrix = function(matrix, tile, translate, anchor) {
+-    if (!translate[0] && !translate[1]) return matrix;
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-    if (anchor === 'viewport') {
+-        var sinA = Math.sin(-this.transform.angle);
+-        var cosA = Math.cos(-this.transform.angle);
+-        translate = [
+-            translate[0] * cosA - translate[1] * sinA,
+-            translate[0] * sinA + translate[1] * cosA
+-        ];
+-    }
++var glMatrix = require("./common.js");
+ 
+-    var translation = [
+-        pixelsToTileUnits(tile, translate[0], this.transform.zoom),
+-        pixelsToTileUnits(tile, translate[1], this.transform.zoom),
+-        0
+-    ];
++/**
++ * @class 2 Dimensional Vector
++ * @name vec2
++ */
++var vec2 = {};
+ 
+-    var translatedMatrix = new Float32Array(16);
+-    mat4.translate(translatedMatrix, matrix, translation);
+-    return translatedMatrix;
++/**
++ * Creates a new, empty vec2
++ *
++ * @returns {vec2} a new 2D vector
++ */
++vec2.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(2);
++    out[0] = 0;
++    out[1] = 0;
++    return out;
+ };
+ 
+-Painter.prototype.saveTexture = function(texture) {
+-    var textures = this.reusableTextures[texture.size];
+-    if (!textures) {
+-        this.reusableTextures[texture.size] = [texture];
+-    } else {
+-        textures.push(texture);
+-    }
++/**
++ * Creates a new vec2 initialized with values from an existing vector
++ *
++ * @param {vec2} a vector to clone
++ * @returns {vec2} a new 2D vector
++ */
++vec2.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(2);
++    out[0] = a[0];
++    out[1] = a[1];
++    return out;
+ };
+ 
+-
+-Painter.prototype.getTexture = function(size) {
+-    var textures = this.reusableTextures[size];
+-    return textures && textures.length > 0 ? textures.pop() : null;
++/**
++ * Creates a new vec2 initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @returns {vec2} a new 2D vector
++ */
++vec2.fromValues = function(x, y) {
++    var out = new glMatrix.ARRAY_TYPE(2);
++    out[0] = x;
++    out[1] = y;
++    return out;
+ };
+ 
+-Painter.prototype.lineWidth = function(width) {
+-    this.gl.lineWidth(util.clamp(width, this.lineWidthRange[0], this.lineWidthRange[1]));
++/**
++ * Copy the values from one vec2 to another
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the source vector
++ * @returns {vec2} out
++ */
++vec2.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    return out;
+ };
+ 
+-Painter.prototype.showOverdrawInspector = function(enabled) {
+-    if (!enabled && !this._showOverdrawInspector) return;
+-    this._showOverdrawInspector = enabled;
+-
+-    var gl = this.gl;
+-    if (enabled) {
+-        gl.blendFunc(gl.CONSTANT_COLOR, gl.ONE);
+-        var numOverdrawSteps = 8;
+-        var a = 1 / numOverdrawSteps;
+-        gl.blendColor(a, a, a, 0);
+-        gl.clearColor(0, 0, 0, 1);
+-        gl.clear(gl.COLOR_BUFFER_BIT);
+-    } else {
+-        gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+-    }
++/**
++ * Set the components of a vec2 to the given values
++ *
++ * @param {vec2} out the receiving vector
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @returns {vec2} out
++ */
++vec2.set = function(out, x, y) {
++    out[0] = x;
++    out[1] = y;
++    return out;
+ };
+ 
+-},{"../data/bucket":17,"../data/buffer":22,"../source/pixels_to_tile_units":47,"../source/tile_pyramid":52,"../util/browser":105,"../util/struct_array":117,"../util/util":119,"./draw_background":31,"./draw_circle":32,"./draw_debug":34,"./draw_fill":35,"./draw_line":36,"./draw_raster":37,"./draw_symbol":38,"./frame_history":39,"./painter/use_program":42,"./vertex_array_object":43,"gl-matrix":133}],42:[function(require,module,exports){
+-'use strict';
+-
+-
+-var path = require('path');
+-var assert = require('assert');
+-var util = require('../../util/util');
++/**
++ * Adds two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    return out;
++};
+ 
+-// readFileSync calls must be written out long-form for brfs.
+-var definitions = {
+-    debug: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\n\nvoid main() {\n    gl_FragColor = u_color;\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1);\n}\n"
+-    },
+-    fill: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvoid main() {\n    gl_FragColor = u_color * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n"
+-    },
+-    circle: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp float u_blur;\nuniform lowp float u_opacity;\n\nvarying lowp vec4 v_color;\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main() {\n    float t = smoothstep(1.0 - max(u_blur, v_antialiasblur), 1.0, length(v_extrude));\n    gl_FragColor = v_color * (1.0 - t) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_extrude_scale;\nuniform float u_devicepixelratio;\n\nattribute vec2 a_pos;\n\n#ifdef ATTRIBUTE_A_COLOR\nattribute lowp vec4 a_color;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\nuniform lowp float u_color_t;\nattribute lowp vec4 a_color0;\nattribute lowp vec4 a_color1;\nattribute lowp vec4 a_color2;\nattribute lowp vec4 a_color3;\n#else\nuniform lowp vec4 a_color;\n#endif\n\n#ifdef ATTRIBUTE_A_RADIUS\nattribute mediump float a_radius;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\nuniform lowp float u_radius_t;\nattribute mediump vec4 a_radius;\n#else\nuniform mediump float a_radius;\n#endif\n\nvarying vec2 v_extrude;\nvarying lowp vec4 v_color;\nvarying lowp float v_antialiasblur;\n\nfloat evaluate_zoom_function_1(const vec4 values, const float t) {\n    if (t < 1.0) {\n        return mix(values[0], values[1], t);\n    } else if (t < 2.0) {\n        return mix(values[1], values[2], t - 1.0);\n    } else {\n        return mix(values[2], values[3], t - 2.0);\n    }\n}\n\nvec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) {\n    if (t < 1.0) {\n        return mix(value0, value1, t);\n    } else if (t < 2.0) {\n        return mix(value1, value2, t - 1.0);\n    } else {\n        return mix(value2, value3, t - 2.0);\n    }\n}\n\nvoid main(void) {\n\n#ifdef ATTRIBUTE_A_RADIUS\n    mediump float radius = a_radius / 10.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\n    mediump float radius = evaluate_zoom_function_1(a_radius, u_radius_t) / 10.0;\n#else\n    mediump float radius = a_radius;\n#endif\n\n    // unencode the extrusion vector that we snuck into the a_pos vector\n    v_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);\n\n    vec2 extrude = v_extrude * radius * u_extrude_scale;\n    // multiply a_pos by 0.5, since we had it * 2 in order to sneak\n    // in extrusion data\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1);\n\n    // gl_Position is divided by gl_Position.w after this shader runs.\n    // Multiply the extrude by it so that it isn't affected by it.\n    gl_Position.xy += extrude * gl_Position.w;\n\n#ifdef ATTRIBUTE_A_COLOR\n    v_color = a_color / 255.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\n    v_color = evaluate_zoom_function_4(a_color0, a_color1, a_color2, a_color3, u_color_t) / 255.0;\n#else\n    v_color = a_color;\n#endif\n\n    // This is a minimum blur distance that serves as a faux-antialiasing for\n    // the circle. since blur is a ratio of the circle's size and the intent is\n    // to keep the blur at roughly 1px, the two are inversely related.\n    v_antialiasblur = 1.0 / u_devicepixelratio / radius;\n}\n"
+-    },
+-    line: {
+-        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
+-    },
+-    linepattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform float u_point;\nuniform float u_blur;\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_fade;\nuniform float u_opacity;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0);\n    float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0);\n    float y_a = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_a.y);\n    float y_b = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_b.y);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, vec2(x_a, y_a));\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, vec2(x_b, y_b));\n\n    vec4 color = mix(texture2D(u_image, pos), texture2D(u_image, pos2), u_fade);\n\n    alpha *= u_opacity;\n\n    gl_FragColor = color * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 extrude = a_extrude * scale;\n    mediump vec2 dist = u_linewidth.s * extrude;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n    v_linesofar = a_linesofar;\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
+-    },
+-    linesdfpattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\nuniform sampler2D u_image;\nuniform float u_sdfgamma;\nuniform float u_mix;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float sdfdist_a = texture2D(u_image, v_tex_a).a;\n    float sdfdist_b = texture2D(u_image, v_tex_b).a;\n    float sdfdist = mix(sdfdist_a, sdfdist_b, u_mix);\n    alpha *= smoothstep(0.5 - u_sdfgamma, 0.5 + u_sdfgamma, sdfdist);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump vec2 u_linewidth;\nuniform mediump float u_ratio;\nuniform vec2 u_patternscale_a;\nuniform float u_tex_y_a;\nuniform vec2 u_patternscale_b;\nuniform float u_tex_y_b;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    v_tex_a = vec2(a_linesofar * u_patternscale_a.x, normal.y * u_patternscale_a.y + u_tex_y_a);\n    v_tex_b = vec2(a_linesofar * u_patternscale_b.x, normal.y * u_patternscale_b.y + u_tex_y_b);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
+-    },
+-    outline: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
+-    },
+-    outlinepattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    // find distance to outline for alpha interpolation\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    \n\n    gl_FragColor = mix(color1, color2, u_mix) * alpha * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
+-    },
+-    pattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    gl_FragColor = mix(color1, color2, u_mix) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n}\n"
+-    },
+-    raster: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_opacity0;\nuniform float u_opacity1;\nuniform sampler2D u_image0;\nuniform sampler2D u_image1;\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nuniform float u_brightness_low;\nuniform float u_brightness_high;\n\nuniform float u_saturation_factor;\nuniform float u_contrast_factor;\nuniform vec3 u_spin_weights;\n\nvoid main() {\n\n    // read and cross-fade colors from the main and parent tiles\n    vec4 color0 = texture2D(u_image0, v_pos0);\n    vec4 color1 = texture2D(u_image1, v_pos1);\n    vec4 color = color0 * u_opacity0 + color1 * u_opacity1;\n    vec3 rgb = color.rgb;\n\n    // spin\n    rgb = vec3(\n        dot(rgb, u_spin_weights.xyz),\n        dot(rgb, u_spin_weights.zxy),\n        dot(rgb, u_spin_weights.yzx));\n\n    // saturation\n    float average = (color.r + color.g + color.b) / 3.0;\n    rgb += (average - rgb) * u_saturation_factor;\n\n    // contrast\n    rgb = (rgb - 0.5) * u_contrast_factor + 0.5;\n\n    // brightness\n    vec3 u_high_vec = vec3(u_brightness_low, u_brightness_low, u_brightness_low);\n    vec3 u_low_vec = vec3(u_brightness_high, u_brightness_high, u_brightness_high);\n\n    gl_FragColor = vec4(mix(u_high_vec, u_low_vec, rgb), color.a);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_tl_parent;\nuniform float u_scale_parent;\nuniform float u_buffer_scale;\n\nattribute vec2 a_pos;\nattribute vec2 a_texture_pos;\n\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5;\n    v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent;\n}\n"
+-    },
+-    icon: {
+-        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp float u_opacity;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * u_opacity;\n    gl_FragColor = texture2D(u_texture, v_tex) * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
+-    },
+-    sdf: {
+-        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform lowp float u_buffer;\nuniform lowp float u_gamma;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    lowp float dist = texture2D(u_texture, v_tex).a;\n    lowp float fade_alpha = texture2D(u_fadetexture, v_fade_tex).a;\n    lowp float gamma = u_gamma * v_gamma_scale;\n    lowp float alpha = smoothstep(u_buffer - gamma, u_buffer + gamma, dist) * fade_alpha;\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - y * u_extra);\n    v_gamma_scale = perspective_scale;\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
+-    },
+-    collisionbox: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_zoom;\nuniform float u_maxzoom;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n\n    float alpha = 0.5;\n\n    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha;\n\n    if (v_placement_zoom > u_zoom) {\n        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha;\n    }\n\n    if (u_zoom >= v_max_zoom) {\n        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25;\n    }\n\n    if (v_placement_zoom >= u_maxzoom) {\n        gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2;\n    }\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_extrude;\nattribute vec2 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_scale;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n     gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0);\n\n     v_max_zoom = a_data.x;\n     v_placement_zoom = a_data.y;\n}\n"
+-    }
++/**
++ * Subtracts vector b from vector a
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    return out;
+ };
+ 
+-module.exports._createProgram = function(name, macros) {
+-    var gl = this.gl;
+-    var program = gl.createProgram();
+-    var definition = definitions[name];
++/**
++ * Alias for {@link vec2.subtract}
++ * @function
++ */
++vec2.sub = vec2.subtract;
+ 
+-    var defines = '';
+-    if (macros) {
+-        for (var m = 0; m < macros.length; m++) {
+-            defines += '#define ' + macros[m] + '\n';
+-        }
+-    }
++/**
++ * Multiplies two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.multiply = function(out, a, b) {
++    out[0] = a[0] * b[0];
++    out[1] = a[1] * b[1];
++    return out;
++};
+ 
+-    var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);
+-    gl.shaderSource(fragmentShader, defines + definition.fragmentSource);
+-    gl.compileShader(fragmentShader);
+-    assert(gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(fragmentShader));
+-    gl.attachShader(program, fragmentShader);
++/**
++ * Alias for {@link vec2.multiply}
++ * @function
++ */
++vec2.mul = vec2.multiply;
+ 
+-    var vertexShader = gl.createShader(gl.VERTEX_SHADER);
+-    gl.shaderSource(vertexShader, defines + definition.vertexSource);
+-    gl.compileShader(vertexShader);
+-    assert(gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(vertexShader));
+-    gl.attachShader(program, vertexShader);
++/**
++ * Divides two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.divide = function(out, a, b) {
++    out[0] = a[0] / b[0];
++    out[1] = a[1] / b[1];
++    return out;
++};
+ 
+-    gl.linkProgram(program);
+-    assert(gl.getProgramParameter(program, gl.LINK_STATUS), gl.getProgramInfoLog(program));
++/**
++ * Alias for {@link vec2.divide}
++ * @function
++ */
++vec2.div = vec2.divide;
+ 
+-    var attributes = {};
+-    var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
+-    for (var i = 0; i < numAttributes; i++) {
+-        var attribute = gl.getActiveAttrib(program, i);
+-        attributes[attribute.name] = i;
+-    }
++/**
++ * Math.ceil the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to ceil
++ * @returns {vec2} out
++ */
++vec2.ceil = function (out, a) {
++    out[0] = Math.ceil(a[0]);
++    out[1] = Math.ceil(a[1]);
++    return out;
++};
+ 
+-    var uniforms = {};
+-    var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
+-    for (var ui = 0; ui < numUniforms; ui++) {
+-        var uniform = gl.getActiveUniform(program, ui);
+-        uniforms[uniform.name] = gl.getUniformLocation(program, uniform.name);
+-    }
++/**
++ * Math.floor the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to floor
++ * @returns {vec2} out
++ */
++vec2.floor = function (out, a) {
++    out[0] = Math.floor(a[0]);
++    out[1] = Math.floor(a[1]);
++    return out;
++};
+ 
+-    return util.extend({
+-        program: program,
+-        definition: definition,
+-        attributes: attributes,
+-        numAttributes: numAttributes
+-    }, attributes, uniforms);
++/**
++ * Returns the minimum of two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.min = function(out, a, b) {
++    out[0] = Math.min(a[0], b[0]);
++    out[1] = Math.min(a[1], b[1]);
++    return out;
+ };
+ 
+-module.exports._createProgramCached = function(name, macros) {
+-    this.cache = this.cache || {};
+-    if (this._showOverdrawInspector) {
+-        macros = macros || [];
+-        macros.push('OVERDRAW_INSPECTOR');
+-    }
+-    var key = JSON.stringify({name: name, macros: macros});
+-    if (!this.cache[key]) {
+-        this.cache[key] = this._createProgram(name, macros);
+-    }
+-    return this.cache[key];
++/**
++ * Returns the maximum of two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.max = function(out, a, b) {
++    out[0] = Math.max(a[0], b[0]);
++    out[1] = Math.max(a[1], b[1]);
++    return out;
+ };
+ 
+-module.exports.useProgram = function (nextProgramName, macros) {
+-    var gl = this.gl;
++/**
++ * Math.round the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to round
++ * @returns {vec2} out
++ */
++vec2.round = function (out, a) {
++    out[0] = Math.round(a[0]);
++    out[1] = Math.round(a[1]);
++    return out;
++};
+ 
+-    var nextProgram = this._createProgramCached(nextProgramName, macros);
+-    var previousProgram = this.currentProgram;
++/**
++ * Scales a vec2 by a scalar number
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {vec2} out
++ */
++vec2.scale = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    return out;
++};
+ 
+-    if (previousProgram !== nextProgram) {
+-        gl.useProgram(nextProgram.program);
+-        this.currentProgram = nextProgram;
+-    }
++/**
++ * Adds two vec2's after scaling the second operand by a scalar value
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @param {Number} scale the amount to scale b by before adding
++ * @returns {vec2} out
++ */
++vec2.scaleAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    return out;
++};
+ 
+-    return nextProgram;
++/**
++ * Calculates the euclidian distance between two vec2's
++ *
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {Number} distance between a and b
++ */
++vec2.distance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1];
++    return Math.sqrt(x*x + y*y);
+ };
+ 
+-},{"../../util/util":119,"assert":6,"path":9}],43:[function(require,module,exports){
+-'use strict';
++/**
++ * Alias for {@link vec2.distance}
++ * @function
++ */
++vec2.dist = vec2.distance;
+ 
+-var assert = require('assert');
++/**
++ * Calculates the squared euclidian distance between two vec2's
++ *
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {Number} squared distance between a and b
++ */
++vec2.squaredDistance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1];
++    return x*x + y*y;
++};
+ 
+-module.exports = VertexArrayObject;
++/**
++ * Alias for {@link vec2.squaredDistance}
++ * @function
++ */
++vec2.sqrDist = vec2.squaredDistance;
+ 
+-function VertexArrayObject() {
+-    this.boundProgram = null;
+-    this.boundVertexBuffer = null;
+-    this.boundVertexBuffer2 = null;
+-    this.boundElementBuffer = null;
+-    this.vao = null;
+-}
+-
+-var reported = false;
+-
+-VertexArrayObject.prototype.bind = function(gl, program, vertexBuffer, elementBuffer, vertexBuffer2) {
+-
+-    var ext = gl.extVertexArrayObject;
+-    if (ext === undefined) {
+-        ext = gl.extVertexArrayObject = gl.getExtension("OES_vertex_array_object");
+-    }
+-
+-    if (ext) {
+-        if (!this.vao) this.vao = ext.createVertexArrayOES();
+-        ext.bindVertexArrayOES(this.vao);
+-    } else if (!reported) {
+-        console.warn('Not using VertexArrayObject extension.');
+-        reported = true;
+-    }
+-
+-    if (!this.boundProgram) {
++/**
++ * Calculates the length of a vec2
++ *
++ * @param {vec2} a vector to calculate length of
++ * @returns {Number} length of a
++ */
++vec2.length = function (a) {
++    var x = a[0],
++        y = a[1];
++    return Math.sqrt(x*x + y*y);
++};
+ 
+-        var numPrevAttributes = ext ? 0 : (gl.currentNumAttributes || 0);
+-        var numNextAttributes = program.numAttributes;
+-        var i;
++/**
++ * Alias for {@link vec2.length}
++ * @function
++ */
++vec2.len = vec2.length;
+ 
+-        // Enable all attributes for the new program.
+-        for (i = numPrevAttributes; i < numNextAttributes; i++) {
+-            gl.enableVertexAttribArray(i);
+-        }
++/**
++ * Calculates the squared length of a vec2
++ *
++ * @param {vec2} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ */
++vec2.squaredLength = function (a) {
++    var x = a[0],
++        y = a[1];
++    return x*x + y*y;
++};
+ 
+-        if (!ext) {
+-            // Disable all attributes from the previous program that aren't used in
+-            // the new program. Note: attribute indices are *not* program specific!
+-            // WebGL breaks if you disable attribute 0. http://stackoverflow.com/questions/20305231
+-            assert(i > 0);
+-            for (i = numNextAttributes; i < numPrevAttributes; i++) {
+-                gl.disableVertexAttribArray(i);
+-            }
+-            gl.currentNumAttributes = numNextAttributes;
+-        }
++/**
++ * Alias for {@link vec2.squaredLength}
++ * @function
++ */
++vec2.sqrLen = vec2.squaredLength;
+ 
+-        vertexBuffer.bind(gl);
+-        vertexBuffer.setVertexAttribPointers(gl, program);
+-        if (vertexBuffer2) {
+-            vertexBuffer2.bind(gl);
+-            vertexBuffer2.setVertexAttribPointers(gl, program);
+-        }
+-        if (elementBuffer) {
+-            elementBuffer.bind(gl);
+-        }
++/**
++ * Negates the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to negate
++ * @returns {vec2} out
++ */
++vec2.negate = function(out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    return out;
++};
+ 
+-        if (ext) {
+-            // store the arguments so that we can verify them when the vao is bound again
+-            this.boundProgram = program;
+-            this.boundVertexBuffer = vertexBuffer;
+-            this.boundVertexBuffer2 = vertexBuffer2;
+-            this.boundElementBuffer = elementBuffer;
+-        }
++/**
++ * Returns the inverse of the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to invert
++ * @returns {vec2} out
++ */
++vec2.inverse = function(out, a) {
++  out[0] = 1.0 / a[0];
++  out[1] = 1.0 / a[1];
++  return out;
++};
+ 
+-    } else {
+-        // verify that bind was called with the same arguments
+-        assert(this.boundProgram === program, 'trying to bind a VAO to a different shader');
+-        assert(this.boundVertexBuffer === vertexBuffer, 'trying to bind a VAO to a different vertex buffer');
+-        assert(this.boundVertexBuffer2 === vertexBuffer2, 'trying to bind a VAO to a different vertex buffer');
+-        assert(this.boundElementBuffer === elementBuffer, 'trying to bind a VAO to a different element buffer');
++/**
++ * Normalize a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to normalize
++ * @returns {vec2} out
++ */
++vec2.normalize = function(out, a) {
++    var x = a[0],
++        y = a[1];
++    var len = x*x + y*y;
++    if (len > 0) {
++        //TODO: evaluate use of glm_invsqrt here?
++        len = 1 / Math.sqrt(len);
++        out[0] = a[0] * len;
++        out[1] = a[1] * len;
+     }
++    return out;
+ };
+ 
+-VertexArrayObject.prototype.unbind = function(gl) {
+-    var ext = gl.extVertexArrayObject;
+-    if (ext) {
+-        ext.bindVertexArrayOES(null);
+-    }
++/**
++ * Calculates the dot product of two vec2's
++ *
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {Number} dot product of a and b
++ */
++vec2.dot = function (a, b) {
++    return a[0] * b[0] + a[1] * b[1];
+ };
+ 
+-VertexArrayObject.prototype.destroy = function(gl) {
+-    var ext = gl.extVertexArrayObject;
+-    if (ext && this.vao) {
+-        ext.deleteVertexArrayOES(this.vao);
+-        this.vao = null;
+-    }
++/**
++ * Computes the cross product of two vec2's
++ * Note that the cross product must by definition produce a 3D vector
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec3} out
++ */
++vec2.cross = function(out, a, b) {
++    var z = a[0] * b[1] - a[1] * b[0];
++    out[0] = out[1] = 0;
++    out[2] = z;
++    return out;
+ };
+ 
+-},{"assert":6}],44:[function(require,module,exports){
+-'use strict';
++/**
++ * Performs a linear interpolation between two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec2} out
++ */
++vec2.lerp = function (out, a, b, t) {
++    var ax = a[0],
++        ay = a[1];
++    out[0] = ax + t * (b[0] - ax);
++    out[1] = ay + t * (b[1] - ay);
++    return out;
++};
+ 
+-var util = require('../util/util');
+-var Evented = require('../util/evented');
+-var TilePyramid = require('./tile_pyramid');
+-var Source = require('./source');
+-var urlResolve = require('resolve-url');
+-var EXTENT = require('../data/bucket').EXTENT;
++/**
++ * Generates a random vector with the given scale
++ *
++ * @param {vec2} out the receiving vector
++ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
++ * @returns {vec2} out
++ */
++vec2.random = function (out, scale) {
++    scale = scale || 1.0;
++    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
++    out[0] = Math.cos(r) * scale;
++    out[1] = Math.sin(r) * scale;
++    return out;
++};
+ 
+-module.exports = GeoJSONSource;
++/**
++ * Transforms the vec2 with a mat2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat2} m matrix to transform with
++ * @returns {vec2} out
++ */
++vec2.transformMat2 = function(out, a, m) {
++    var x = a[0],
++        y = a[1];
++    out[0] = m[0] * x + m[2] * y;
++    out[1] = m[1] * x + m[3] * y;
++    return out;
++};
+ 
+ /**
+- * Create a GeoJSON data source instance given an options object
+- * @class GeoJSONSource
+- * @param {Object} [options]
+- * @param {Object|string} options.data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
+- * @param {number} [options.maxzoom=18] Maximum zoom to preserve detail at.
+- * @param {number} [options.buffer] Tile buffer on each side in pixels.
+- * @param {number} [options.tolerance] Simplification tolerance (higher means simpler) in pixels.
+- * @param {number} [options.cluster] If the data is a collection of point features, setting this to true clusters the points by radius into groups.
+- * @param {number} [options.clusterRadius=50] Radius of each cluster when clustering points, in pixels.
+- * @param {number} [options.clusterMaxZoom] Max zoom to cluster points on. Defaults to one zoom less than `maxzoom` (so that last zoom features are not clustered).
++ * Transforms the vec2 with a mat2d
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat2d} m matrix to transform with
++ * @returns {vec2} out
++ */
++vec2.transformMat2d = function(out, a, m) {
++    var x = a[0],
++        y = a[1];
++    out[0] = m[0] * x + m[2] * y + m[4];
++    out[1] = m[1] * x + m[3] * y + m[5];
++    return out;
++};
+ 
+- * @example
+- * var sourceObj = new mapboxgl.GeoJSONSource({
+- *    data: {
+- *        "type": "FeatureCollection",
+- *        "features": [{
+- *            "type": "Feature",
+- *            "geometry": {
+- *                "type": "Point",
+- *                "coordinates": [
+- *                    -76.53063297271729,
+- *                    39.18174077994108
+- *                ]
+- *            }
+- *        }]
+- *    }
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
++/**
++ * Transforms the vec2 with a mat3
++ * 3rd vector component is implicitly '1'
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat3} m matrix to transform with
++ * @returns {vec2} out
+  */
+-function GeoJSONSource(options) {
+-    options = options || {};
++vec2.transformMat3 = function(out, a, m) {
++    var x = a[0],
++        y = a[1];
++    out[0] = m[0] * x + m[3] * y + m[6];
++    out[1] = m[1] * x + m[4] * y + m[7];
++    return out;
++};
+ 
+-    this._data = options.data;
++/**
++ * Transforms the vec2 with a mat4
++ * 3rd vector component is implicitly '0'
++ * 4th vector component is implicitly '1'
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec2} out
++ */
++vec2.transformMat4 = function(out, a, m) {
++    var x = a[0], 
++        y = a[1];
++    out[0] = m[0] * x + m[4] * y + m[12];
++    out[1] = m[1] * x + m[5] * y + m[13];
++    return out;
++};
+ 
+-    if (options.maxzoom !== undefined) this.maxzoom = options.maxzoom;
++/**
++ * Perform some operation over an array of vec2s.
++ *
++ * @param {Array} a the array of vectors to iterate over
++ * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed
++ * @param {Number} offset Number of elements to skip at the beginning of the array
++ * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
++ * @param {Function} fn Function to call for each vector in the array
++ * @param {Object} [arg] additional argument to pass to fn
++ * @returns {Array} a
++ * @function
++ */
++vec2.forEach = (function() {
++    var vec = vec2.create();
+ 
+-    var scale = EXTENT / this.tileSize;
++    return function(a, stride, offset, count, fn, arg) {
++        var i, l;
++        if(!stride) {
++            stride = 2;
++        }
+ 
+-    this.geojsonVtOptions = {
+-        buffer: (options.buffer !== undefined ? options.buffer : 128) * scale,
+-        tolerance: (options.tolerance !== undefined ? options.tolerance : 0.375) * scale,
+-        extent: EXTENT,
+-        maxZoom: this.maxzoom
+-    };
++        if(!offset) {
++            offset = 0;
++        }
++        
++        if(count) {
++            l = Math.min((count * stride) + offset, a.length);
++        } else {
++            l = a.length;
++        }
+ 
+-    this.cluster = options.cluster || false;
+-    this.superclusterOptions = {
+-        maxZoom: Math.min(options.clusterMaxZoom, this.maxzoom - 1) || (this.maxzoom - 1),
+-        extent: EXTENT,
+-        radius: (options.clusterRadius || 50) * scale,
+-        log: false
++        for(i = offset; i < l; i += stride) {
++            vec[0] = a[i]; vec[1] = a[i+1];
++            fn(vec, vec, arg);
++            a[i] = vec[0]; a[i+1] = vec[1];
++        }
++        
++        return a;
+     };
++})();
+ 
+-    this._pyramid = new TilePyramid({
+-        tileSize: this.tileSize,
+-        minzoom: this.minzoom,
+-        maxzoom: this.maxzoom,
+-        reparseOverscaled: true,
+-        load: this._loadTile.bind(this),
+-        abort: this._abortTile.bind(this),
+-        unload: this._unloadTile.bind(this),
+-        add: this._addTile.bind(this),
+-        remove: this._removeTile.bind(this),
+-        redoPlacement: this._redoTilePlacement.bind(this)
+-    });
+-}
+-
+-GeoJSONSource.prototype = util.inherit(Evented, /** @lends GeoJSONSource.prototype */{
+-    minzoom: 0,
+-    maxzoom: 18,
+-    tileSize: 512,
+-    _dirty: true,
+-    isTileClipped: true,
++/**
++ * Returns a string representation of a vector
++ *
++ * @param {vec2} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++vec2.str = function (a) {
++    return 'vec2(' + a[0] + ', ' + a[1] + ')';
++};
+ 
+-    /**
+-     * Update source geojson data and rerender map
+-     *
+-     * @param {Object|string} data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
+-     * @returns {GeoJSONSource} this
+-     */
+-    setData: function(data) {
+-        this._data = data;
+-        this._dirty = true;
++/**
++ * Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)
++ *
++ * @param {vec2} a The first vector.
++ * @param {vec2} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec2.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1];
++};
+ 
+-        this.fire('change');
++/**
++ * Returns whether or not the vectors have approximately the same elements in the same position.
++ *
++ * @param {vec2} a The first vector.
++ * @param {vec2} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec2.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1];
++    var b0 = b[0], b1 = b[1];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)));
++};
+ 
+-        if (this.map)
+-            this.update(this.map.transform);
++module.exports = vec2;
+ 
+-        return this;
+-    },
++},{"./common.js":25}],32:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-    onAdd: function(map) {
+-        this.map = map;
+-    },
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-    loaded: function() {
+-        return this._loaded && this._pyramid.loaded();
+-    },
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-    update: function(transform) {
+-        if (this._dirty) {
+-            this._updateData();
+-        }
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-        if (this._loaded) {
+-            this._pyramid.update(this.used, transform);
+-        }
+-    },
++var glMatrix = require("./common.js");
+ 
+-    reload: function() {
+-        if (this._loaded) {
+-            this._pyramid.reload();
+-        }
+-    },
++/**
++ * @class 3 Dimensional Vector
++ * @name vec3
++ */
++var vec3 = {};
+ 
+-    serialize: function() {
+-        return {
+-            type: 'geojson',
+-            data: this._data
+-        };
+-    },
++/**
++ * Creates a new, empty vec3
++ *
++ * @returns {vec3} a new 3D vector
++ */
++vec3.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(3);
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    return out;
++};
+ 
+-    getVisibleCoordinates: Source._getVisibleCoordinates,
+-    getTile: Source._getTile,
++/**
++ * Creates a new vec3 initialized with values from an existing vector
++ *
++ * @param {vec3} a vector to clone
++ * @returns {vec3} a new 3D vector
++ */
++vec3.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(3);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    return out;
++};
+ 
+-    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
+-    querySourceFeatures: Source._querySourceFeatures,
++/**
++ * Creates a new vec3 initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @returns {vec3} a new 3D vector
++ */
++vec3.fromValues = function(x, y, z) {
++    var out = new glMatrix.ARRAY_TYPE(3);
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    return out;
++};
+ 
+-    _updateData: function() {
+-        this._dirty = false;
+-        var options = {
+-            tileSize: this.tileSize,
+-            source: this.id,
+-            geojsonVtOptions: this.geojsonVtOptions,
+-            cluster: this.cluster,
+-            superclusterOptions: this.superclusterOptions
+-        };
+-
+-        var data = this._data;
+-        if (typeof data === 'string') {
+-            options.url = typeof window != 'undefined' ? urlResolve(window.location.href, data) : data;
+-        } else {
+-            options.data = JSON.stringify(data);
+-        }
+-        this.workerID = this.dispatcher.send('parse geojson', options, function(err) {
+-            this._loaded = true;
+-            if (err) {
+-                this.fire('error', {error: err});
+-            } else {
+-                this._pyramid.reload();
+-                this.fire('change');
+-            }
+-
+-        }.bind(this));
+-    },
++/**
++ * Copy the values from one vec3 to another
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the source vector
++ * @returns {vec3} out
++ */
++vec3.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    return out;
++};
+ 
+-    _loadTile: function(tile) {
+-        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
+-        var params = {
+-            uid: tile.uid,
+-            coord: tile.coord,
+-            zoom: tile.coord.z,
+-            maxZoom: this.maxzoom,
+-            tileSize: this.tileSize,
+-            source: this.id,
+-            overscaling: overscaling,
+-            angle: this.map.transform.angle,
+-            pitch: this.map.transform.pitch,
+-            showCollisionBoxes: this.map.showCollisionBoxes
+-        };
++/**
++ * Set the components of a vec3 to the given values
++ *
++ * @param {vec3} out the receiving vector
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @returns {vec3} out
++ */
++vec3.set = function(out, x, y, z) {
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    return out;
++};
+ 
+-        tile.workerID = this.dispatcher.send('load geojson tile', params, function(err, data) {
++/**
++ * Adds two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    return out;
++};
+ 
+-            tile.unloadVectorData(this.map.painter);
++/**
++ * Subtracts vector b from vector a
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    return out;
++};
+ 
+-            if (tile.aborted)
+-                return;
++/**
++ * Alias for {@link vec3.subtract}
++ * @function
++ */
++vec3.sub = vec3.subtract;
+ 
+-            if (err) {
+-                this.fire('tile.error', {tile: tile});
+-                return;
+-            }
++/**
++ * Multiplies two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.multiply = function(out, a, b) {
++    out[0] = a[0] * b[0];
++    out[1] = a[1] * b[1];
++    out[2] = a[2] * b[2];
++    return out;
++};
+ 
+-            tile.loadVectorData(data, this.map.style);
++/**
++ * Alias for {@link vec3.multiply}
++ * @function
++ */
++vec3.mul = vec3.multiply;
+ 
+-            if (tile.redoWhenDone) {
+-                tile.redoWhenDone = false;
+-                tile.redoPlacement(this);
+-            }
++/**
++ * Divides two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.divide = function(out, a, b) {
++    out[0] = a[0] / b[0];
++    out[1] = a[1] / b[1];
++    out[2] = a[2] / b[2];
++    return out;
++};
+ 
+-            this.fire('tile.load', {tile: tile});
++/**
++ * Alias for {@link vec3.divide}
++ * @function
++ */
++vec3.div = vec3.divide;
+ 
+-        }.bind(this), this.workerID);
+-    },
++/**
++ * Math.ceil the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to ceil
++ * @returns {vec3} out
++ */
++vec3.ceil = function (out, a) {
++    out[0] = Math.ceil(a[0]);
++    out[1] = Math.ceil(a[1]);
++    out[2] = Math.ceil(a[2]);
++    return out;
++};
+ 
+-    _abortTile: function(tile) {
+-        tile.aborted = true;
+-    },
++/**
++ * Math.floor the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to floor
++ * @returns {vec3} out
++ */
++vec3.floor = function (out, a) {
++    out[0] = Math.floor(a[0]);
++    out[1] = Math.floor(a[1]);
++    out[2] = Math.floor(a[2]);
++    return out;
++};
+ 
+-    _addTile: function(tile) {
+-        this.fire('tile.add', {tile: tile});
+-    },
++/**
++ * Returns the minimum of two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.min = function(out, a, b) {
++    out[0] = Math.min(a[0], b[0]);
++    out[1] = Math.min(a[1], b[1]);
++    out[2] = Math.min(a[2], b[2]);
++    return out;
++};
+ 
+-    _removeTile: function(tile) {
+-        this.fire('tile.remove', {tile: tile});
+-    },
++/**
++ * Returns the maximum of two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.max = function(out, a, b) {
++    out[0] = Math.max(a[0], b[0]);
++    out[1] = Math.max(a[1], b[1]);
++    out[2] = Math.max(a[2], b[2]);
++    return out;
++};
+ 
+-    _unloadTile: function(tile) {
+-        tile.unloadVectorData(this.map.painter);
+-        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
+-    },
++/**
++ * Math.round the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to round
++ * @returns {vec3} out
++ */
++vec3.round = function (out, a) {
++    out[0] = Math.round(a[0]);
++    out[1] = Math.round(a[1]);
++    out[2] = Math.round(a[2]);
++    return out;
++};
+ 
+-    redoPlacement: Source.redoPlacement,
++/**
++ * Scales a vec3 by a scalar number
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {vec3} out
++ */
++vec3.scale = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    return out;
++};
+ 
+-    _redoTilePlacement: function(tile) {
+-        tile.redoPlacement(this);
+-    }
+-});
++/**
++ * Adds two vec3's after scaling the second operand by a scalar value
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {Number} scale the amount to scale b by before adding
++ * @returns {vec3} out
++ */
++vec3.scaleAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    return out;
++};
+ 
+-},{"../data/bucket":17,"../util/evented":111,"../util/util":119,"./source":49,"./tile_pyramid":52,"resolve-url":175}],45:[function(require,module,exports){
+-'use strict';
++/**
++ * Calculates the euclidian distance between two vec3's
++ *
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} distance between a and b
++ */
++vec3.distance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2];
++    return Math.sqrt(x*x + y*y + z*z);
++};
+ 
+-var Point = require('point-geometry');
+-var VectorTileFeature = require('vector-tile').VectorTileFeature;
+-var EXTENT = require('../data/bucket').EXTENT;
++/**
++ * Alias for {@link vec3.distance}
++ * @function
++ */
++vec3.dist = vec3.distance;
+ 
+-module.exports = GeoJSONWrapper;
++/**
++ * Calculates the squared euclidian distance between two vec3's
++ *
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} squared distance between a and b
++ */
++vec3.squaredDistance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2];
++    return x*x + y*y + z*z;
++};
+ 
+-// conform to vectortile api
+-function GeoJSONWrapper(features) {
+-    this.features = features;
+-    this.length = features.length;
+-    this.extent = EXTENT;
+-}
++/**
++ * Alias for {@link vec3.squaredDistance}
++ * @function
++ */
++vec3.sqrDist = vec3.squaredDistance;
+ 
+-GeoJSONWrapper.prototype.feature = function(i) {
+-    return new FeatureWrapper(this.features[i]);
++/**
++ * Calculates the length of a vec3
++ *
++ * @param {vec3} a vector to calculate length of
++ * @returns {Number} length of a
++ */
++vec3.length = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2];
++    return Math.sqrt(x*x + y*y + z*z);
+ };
+ 
+-function FeatureWrapper(feature) {
+-    this.type = feature.type;
+-    this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry;
+-    this.properties = feature.tags;
+-    this.extent = EXTENT;
+-}
+-
+-FeatureWrapper.prototype.loadGeometry = function() {
+-    var rings = this.rawGeometry;
+-    this.geometry = [];
++/**
++ * Alias for {@link vec3.length}
++ * @function
++ */
++vec3.len = vec3.length;
+ 
+-    for (var i = 0; i < rings.length; i++) {
+-        var ring = rings[i],
+-            newRing = [];
+-        for (var j = 0; j < ring.length; j++) {
+-            newRing.push(new Point(ring[j][0], ring[j][1]));
+-        }
+-        this.geometry.push(newRing);
+-    }
+-    return this.geometry;
++/**
++ * Calculates the squared length of a vec3
++ *
++ * @param {vec3} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ */
++vec3.squaredLength = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2];
++    return x*x + y*y + z*z;
+ };
+ 
+-FeatureWrapper.prototype.bbox = function() {
+-    if (!this.geometry) this.loadGeometry();
+-
+-    var rings = this.geometry,
+-        x1 = Infinity,
+-        x2 = -Infinity,
+-        y1 = Infinity,
+-        y2 = -Infinity;
++/**
++ * Alias for {@link vec3.squaredLength}
++ * @function
++ */
++vec3.sqrLen = vec3.squaredLength;
+ 
+-    for (var i = 0; i < rings.length; i++) {
+-        var ring = rings[i];
++/**
++ * Negates the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to negate
++ * @returns {vec3} out
++ */
++vec3.negate = function(out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    return out;
++};
+ 
+-        for (var j = 0; j < ring.length; j++) {
+-            var coord = ring[j];
++/**
++ * Returns the inverse of the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to invert
++ * @returns {vec3} out
++ */
++vec3.inverse = function(out, a) {
++  out[0] = 1.0 / a[0];
++  out[1] = 1.0 / a[1];
++  out[2] = 1.0 / a[2];
++  return out;
++};
+ 
+-            x1 = Math.min(x1, coord.x);
+-            x2 = Math.max(x2, coord.x);
+-            y1 = Math.min(y1, coord.y);
+-            y2 = Math.max(y2, coord.y);
+-        }
++/**
++ * Normalize a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to normalize
++ * @returns {vec3} out
++ */
++vec3.normalize = function(out, a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2];
++    var len = x*x + y*y + z*z;
++    if (len > 0) {
++        //TODO: evaluate use of glm_invsqrt here?
++        len = 1 / Math.sqrt(len);
++        out[0] = a[0] * len;
++        out[1] = a[1] * len;
++        out[2] = a[2] * len;
+     }
+-
+-    return [x1, y1, x2, y2];
++    return out;
+ };
+ 
+-FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON;
+-
+-},{"../data/bucket":17,"point-geometry":174,"vector-tile":183}],46:[function(require,module,exports){
+-'use strict';
++/**
++ * Calculates the dot product of two vec3's
++ *
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} dot product of a and b
++ */
++vec3.dot = function (a, b) {
++    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
++};
+ 
+-var util = require('../util/util');
+-var Tile = require('./tile');
+-var TileCoord = require('./tile_coord');
+-var LngLat = require('../geo/lng_lat');
+-var Point = require('point-geometry');
+-var Evented = require('../util/evented');
+-var ajax = require('../util/ajax');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
+-var Buffer = require('../data/buffer');
+-var VertexArrayObject = require('../render/vertex_array_object');
++/**
++ * Computes the cross product of two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.cross = function(out, a, b) {
++    var ax = a[0], ay = a[1], az = a[2],
++        bx = b[0], by = b[1], bz = b[2];
+ 
+-module.exports = ImageSource;
++    out[0] = ay * bz - az * by;
++    out[1] = az * bx - ax * bz;
++    out[2] = ax * by - ay * bx;
++    return out;
++};
+ 
+ /**
+- * Create an Image source instance given an options object
+- * @class ImageSource
+- * @param {Object} [options]
+- * @param {string} options.url A string URL of an image file
+- * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
+- * @example
+- * var sourceObj = new mapboxgl.ImageSource({
+- *    url: 'https://www.mapbox.com/images/foo.png',
+- *    coordinates: [
+- *        [-76.54335737228394, 39.18579907229748],
+- *        [-76.52803659439087, 39.1838364847587],
+- *        [-76.5295386314392, 39.17683392507606],
+- *        [-76.54520273208618, 39.17876344106642]
+- *    ]
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
++ * Performs a linear interpolation between two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
+  */
+-function ImageSource(options) {
+-    this.urls = options.urls;
+-    this.coordinates = options.coordinates;
++vec3.lerp = function (out, a, b, t) {
++    var ax = a[0],
++        ay = a[1],
++        az = a[2];
++    out[0] = ax + t * (b[0] - ax);
++    out[1] = ay + t * (b[1] - ay);
++    out[2] = az + t * (b[2] - az);
++    return out;
++};
+ 
+-    ajax.getImage(options.url, function(err, image) {
+-        // @TODO handle errors via event.
+-        if (err) return;
+-
+-        this.image = image;
+-
+-        this.image.addEventListener('load', function() {
+-            this.map._rerender();
+-        }.bind(this));
++/**
++ * Performs a hermite interpolation with two control points
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {vec3} c the third operand
++ * @param {vec3} d the fourth operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
++ */
++vec3.hermite = function (out, a, b, c, d, t) {
++  var factorTimes2 = t * t,
++      factor1 = factorTimes2 * (2 * t - 3) + 1,
++      factor2 = factorTimes2 * (t - 2) + t,
++      factor3 = factorTimes2 * (t - 1),
++      factor4 = factorTimes2 * (3 - 2 * t);
++  
++  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
++  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
++  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
++  
++  return out;
++};
+ 
+-        this._loaded = true;
++/**
++ * Performs a bezier interpolation with two control points
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {vec3} c the third operand
++ * @param {vec3} d the fourth operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
++ */
++vec3.bezier = function (out, a, b, c, d, t) {
++  var inverseFactor = 1 - t,
++      inverseFactorTimesTwo = inverseFactor * inverseFactor,
++      factorTimes2 = t * t,
++      factor1 = inverseFactorTimesTwo * inverseFactor,
++      factor2 = 3 * t * inverseFactorTimesTwo,
++      factor3 = 3 * factorTimes2 * inverseFactor,
++      factor4 = factorTimes2 * t;
++  
++  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
++  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
++  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
++  
++  return out;
++};
+ 
+-        if (this.map) {
+-            this.setCoordinates(options.coordinates);
+-        }
+-    }.bind(this));
+-}
++/**
++ * Generates a random vector with the given scale
++ *
++ * @param {vec3} out the receiving vector
++ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
++ * @returns {vec3} out
++ */
++vec3.random = function (out, scale) {
++    scale = scale || 1.0;
+ 
+-ImageSource.prototype = util.inherit(Evented, /** @lends ImageSource.prototype */ {
+-    onAdd: function(map) {
+-        this.map = map;
+-        if (this.image) {
+-            this.setCoordinates(this.coordinates);
+-        }
+-    },
++    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
++    var z = (glMatrix.RANDOM() * 2.0) - 1.0;
++    var zScale = Math.sqrt(1.0-z*z) * scale;
+ 
+-    /**
+-     * Update image coordinates and rerender map
+-     *
+-     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
+-     * @returns {ImageSource} this
+-     */
+-    setCoordinates: function(coordinates) {
+-        this.coordinates = coordinates;
++    out[0] = Math.cos(r) * zScale;
++    out[1] = Math.sin(r) * zScale;
++    out[2] = z * scale;
++    return out;
++};
+ 
+-        // Calculate which mercator tile is suitable for rendering the image in
+-        // and create a buffer with the corner coordinates. These coordinates
+-        // may be outside the tile, because raster tiles aren't clipped when rendering.
++/**
++ * Transforms the vec3 with a mat4.
++ * 4th vector component is implicitly '1'
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec3} out
++ */
++vec3.transformMat4 = function(out, a, m) {
++    var x = a[0], y = a[1], z = a[2],
++        w = m[3] * x + m[7] * y + m[11] * z + m[15];
++    w = w || 1.0;
++    out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w;
++    out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w;
++    out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w;
++    return out;
++};
+ 
+-        var map = this.map;
+-        var cornerZ0Coords = coordinates.map(function(coord) {
+-            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
+-        });
++/**
++ * Transforms the vec3 with a mat3.
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to transform
++ * @param {mat4} m the 3x3 matrix to transform with
++ * @returns {vec3} out
++ */
++vec3.transformMat3 = function(out, a, m) {
++    var x = a[0], y = a[1], z = a[2];
++    out[0] = x * m[0] + y * m[3] + z * m[6];
++    out[1] = x * m[1] + y * m[4] + z * m[7];
++    out[2] = x * m[2] + y * m[5] + z * m[8];
++    return out;
++};
+ 
+-        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
+-        centerCoord.column = Math.round(centerCoord.column);
+-        centerCoord.row = Math.round(centerCoord.row);
++/**
++ * Transforms the vec3 with a quat
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to transform
++ * @param {quat} q quaternion to transform with
++ * @returns {vec3} out
++ */
++vec3.transformQuat = function(out, a, q) {
++    // benchmarks: http://jsperf.com/quaternion-transform-vec3-implementations
+ 
+-        var tileCoords = cornerZ0Coords.map(function(coord) {
+-            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
+-            return new Point(
+-                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
+-                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
+-        });
++    var x = a[0], y = a[1], z = a[2],
++        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+ 
+-        var maxInt16 = 32767;
+-        var array = new RasterBoundsArray();
+-        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
+-        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
+-        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
+-        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
++        // calculate quat * vec
++        ix = qw * x + qy * z - qz * y,
++        iy = qw * y + qz * x - qx * z,
++        iz = qw * z + qx * y - qy * x,
++        iw = -qx * x - qy * y - qz * z;
+ 
+-        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
+-        this.tile.buckets = {};
++    // calculate result * inverse quat
++    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
++    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
++    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
++    return out;
++};
+ 
+-        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
+-        this.tile.boundsVAO = new VertexArrayObject();
++/**
++ * Rotate a 3D vector around the x-axis
++ * @param {vec3} out The receiving vec3
++ * @param {vec3} a The vec3 point to rotate
++ * @param {vec3} b The origin of the rotation
++ * @param {Number} c The angle of rotation
++ * @returns {vec3} out
++ */
++vec3.rotateX = function(out, a, b, c){
++   var p = [], r=[];
++	  //Translate point to the origin
++	  p[0] = a[0] - b[0];
++	  p[1] = a[1] - b[1];
++  	p[2] = a[2] - b[2];
+ 
+-        this.fire('change');
++	  //perform rotation
++	  r[0] = p[0];
++	  r[1] = p[1]*Math.cos(c) - p[2]*Math.sin(c);
++	  r[2] = p[1]*Math.sin(c) + p[2]*Math.cos(c);
+ 
+-        return this;
+-    },
++	  //translate to correct position
++	  out[0] = r[0] + b[0];
++	  out[1] = r[1] + b[1];
++	  out[2] = r[2] + b[2];
+ 
+-    loaded: function() {
+-        return this.image && this.image.complete;
+-    },
++  	return out;
++};
+ 
+-    update: function() {
+-        // noop
+-    },
++/**
++ * Rotate a 3D vector around the y-axis
++ * @param {vec3} out The receiving vec3
++ * @param {vec3} a The vec3 point to rotate
++ * @param {vec3} b The origin of the rotation
++ * @param {Number} c The angle of rotation
++ * @returns {vec3} out
++ */
++vec3.rotateY = function(out, a, b, c){
++  	var p = [], r=[];
++  	//Translate point to the origin
++  	p[0] = a[0] - b[0];
++  	p[1] = a[1] - b[1];
++  	p[2] = a[2] - b[2];
++  
++  	//perform rotation
++  	r[0] = p[2]*Math.sin(c) + p[0]*Math.cos(c);
++  	r[1] = p[1];
++  	r[2] = p[2]*Math.cos(c) - p[0]*Math.sin(c);
++  
++  	//translate to correct position
++  	out[0] = r[0] + b[0];
++  	out[1] = r[1] + b[1];
++  	out[2] = r[2] + b[2];
++  
++  	return out;
++};
+ 
+-    reload: function() {
+-        // noop
+-    },
++/**
++ * Rotate a 3D vector around the z-axis
++ * @param {vec3} out The receiving vec3
++ * @param {vec3} a The vec3 point to rotate
++ * @param {vec3} b The origin of the rotation
++ * @param {Number} c The angle of rotation
++ * @returns {vec3} out
++ */
++vec3.rotateZ = function(out, a, b, c){
++  	var p = [], r=[];
++  	//Translate point to the origin
++  	p[0] = a[0] - b[0];
++  	p[1] = a[1] - b[1];
++  	p[2] = a[2] - b[2];
++  
++  	//perform rotation
++  	r[0] = p[0]*Math.cos(c) - p[1]*Math.sin(c);
++  	r[1] = p[0]*Math.sin(c) + p[1]*Math.cos(c);
++  	r[2] = p[2];
++  
++  	//translate to correct position
++  	out[0] = r[0] + b[0];
++  	out[1] = r[1] + b[1];
++  	out[2] = r[2] + b[2];
++  
++  	return out;
++};
+ 
+-    prepare: function() {
+-        if (!this._loaded || !this.loaded()) return;
++/**
++ * Perform some operation over an array of vec3s.
++ *
++ * @param {Array} a the array of vectors to iterate over
++ * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed
++ * @param {Number} offset Number of elements to skip at the beginning of the array
++ * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array
++ * @param {Function} fn Function to call for each vector in the array
++ * @param {Object} [arg] additional argument to pass to fn
++ * @returns {Array} a
++ * @function
++ */
++vec3.forEach = (function() {
++    var vec = vec3.create();
+ 
+-        var painter = this.map.painter;
+-        var gl = painter.gl;
++    return function(a, stride, offset, count, fn, arg) {
++        var i, l;
++        if(!stride) {
++            stride = 3;
++        }
+ 
+-        if (!this.tile.texture) {
+-            this.tile.texture = gl.createTexture();
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
++        if(!offset) {
++            offset = 0;
++        }
++        
++        if(count) {
++            l = Math.min((count * stride) + offset, a.length);
+         } else {
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
++            l = a.length;
+         }
+-    },
+-
+-    getVisibleCoordinates: function() {
+-        if (this.tile) return [this.tile.coord];
+-        else return [];
+-    },
+ 
+-    getTile: function() {
+-        return this.tile;
+-    },
+-
+-    serialize: function() {
+-        return {
+-            type: 'image',
+-            urls: this.urls,
+-            coordinates: this.coordinates
+-        };
+-    }
+-});
++        for(i = offset; i < l; i += stride) {
++            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2];
++            fn(vec, vec, arg);
++            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2];
++        }
++        
++        return a;
++    };
++})();
+ 
+-},{"../data/bucket":17,"../data/buffer":22,"../geo/lng_lat":26,"../render/draw_raster":37,"../render/vertex_array_object":43,"../util/ajax":104,"../util/evented":111,"../util/util":119,"./tile":50,"./tile_coord":51,"point-geometry":174}],47:[function(require,module,exports){
+-'use strict';
++/**
++ * Get the angle between two 3D vectors
++ * @param {vec3} a The first operand
++ * @param {vec3} b The second operand
++ * @returns {Number} The angle in radians
++ */
++vec3.angle = function(a, b) {
++   
++    var tempA = vec3.fromValues(a[0], a[1], a[2]);
++    var tempB = vec3.fromValues(b[0], b[1], b[2]);
++ 
++    vec3.normalize(tempA, tempA);
++    vec3.normalize(tempB, tempB);
++ 
++    var cosine = vec3.dot(tempA, tempB);
+ 
+-var Bucket = require('../data/bucket');
++    if(cosine > 1.0){
++        return 0;
++    } else {
++        return Math.acos(cosine);
++    }     
++};
+ 
+ /**
+- * Converts a pixel value at a the given zoom level to tile units.
++ * Returns a string representation of a vector
+  *
+- * The shaders mostly calculate everything in tile units so style
+- * properties need to be converted from pixels to tile units using this.
++ * @param {vec3} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++vec3.str = function (a) {
++    return 'vec3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ')';
++};
++
++/**
++ * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
+  *
+- * For example, a translation by 30 pixels at zoom 6.5 will be a
+- * translation by pixelsToTileUnits(30, 6.5) tile units.
++ * @param {vec3} a The first vector.
++ * @param {vec3} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec3.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2];
++};
++
++/**
++ * Returns whether or not the vectors have approximately the same elements in the same position.
+  *
+- * @param {object} tile a {Tile object} will work well, but any object that follows the format {coord: {TileCord object}, tileSize: {number}} will work
+- * @param {number} pixelValue
+- * @param {number} z
+- * @returns {number} value in tile units
+- * @private
++ * @param {vec3} a The first vector.
++ * @param {vec3} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
+  */
+-module.exports = function(tile, pixelValue, z) {
+-    return pixelValue * (Bucket.EXTENT / (tile.tileSize * Math.pow(2, z - tile.coord.z)));
++vec3.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2];
++    var b0 = b[0], b1 = b[1], b2 = b[2];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)));
+ };
+ 
++module.exports = vec3;
+ 
+-},{"../data/bucket":17}],48:[function(require,module,exports){
+-'use strict';
++},{"./common.js":25}],33:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var Evented = require('../util/evented');
+-var Source = require('./source');
+-var normalizeURL = require('../util/mapbox').normalizeTileURL;
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-module.exports = RasterTileSource;
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-function RasterTileSource(options) {
+-    util.extend(this, util.pick(options, ['url', 'tileSize']));
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-    Source._loadTileJSON.call(this, options);
+-}
++var glMatrix = require("./common.js");
+ 
+-RasterTileSource.prototype = util.inherit(Evented, {
+-    minzoom: 0,
+-    maxzoom: 22,
+-    roundZoom: true,
+-    tileSize: 512,
+-    _loaded: false,
++/**
++ * @class 4 Dimensional Vector
++ * @name vec4
++ */
++var vec4 = {};
+ 
+-    onAdd: function(map) {
+-        this.map = map;
+-    },
++/**
++ * Creates a new, empty vec4
++ *
++ * @returns {vec4} a new 4D vector
++ */
++vec4.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    return out;
++};
+ 
+-    loaded: function() {
+-        return this._pyramid && this._pyramid.loaded();
+-    },
++/**
++ * Creates a new vec4 initialized with values from an existing vector
++ *
++ * @param {vec4} a vector to clone
++ * @returns {vec4} a new 4D vector
++ */
++vec4.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-    update: function(transform) {
+-        if (this._pyramid) {
+-            this._pyramid.update(this.used, transform, this.map.style.rasterFadeDuration);
+-        }
+-    },
++/**
++ * Creates a new vec4 initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {vec4} a new 4D vector
++ */
++vec4.fromValues = function(x, y, z, w) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    out[3] = w;
++    return out;
++};
+ 
+-    reload: function() {
+-        // noop
+-    },
++/**
++ * Copy the values from one vec4 to another
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the source vector
++ * @returns {vec4} out
++ */
++vec4.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-    serialize: function() {
+-        return {
+-            type: 'raster',
+-            url: this.url,
+-            tileSize: this.tileSize
+-        };
+-    },
+-
+-    getVisibleCoordinates: Source._getVisibleCoordinates,
+-    getTile: Source._getTile,
+-
+-    _loadTile: function(tile) {
+-        var url = normalizeURL(tile.coord.url(this.tiles), this.url, this.tileSize);
+-
+-        tile.request = ajax.getImage(url, done.bind(this));
+-
+-        function done(err, img) {
+-            delete tile.request;
+-
+-            if (tile.aborted)
+-                return;
+-
+-            if (err) {
+-                tile.errored = true;
+-                this.fire('tile.error', {tile: tile, error: err});
+-                return;
+-            }
+-
+-            var gl = this.map.painter.gl;
+-            tile.texture = this.map.painter.getTexture(img.width);
+-            if (tile.texture) {
+-                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
+-                gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, img);
+-            } else {
+-                tile.texture = gl.createTexture();
+-                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-                gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
+-                gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, img);
+-                tile.texture.size = img.width;
+-            }
+-            gl.generateMipmap(gl.TEXTURE_2D);
+-
+-            tile.timeAdded = new Date().getTime();
+-            this.map.animationLoop.set(this.style.rasterFadeDuration);
+-
+-            tile.source = this;
+-            tile.loaded = true;
+-
+-            this.fire('tile.load', {tile: tile});
+-        }
+-    },
+-
+-    _abortTile: function(tile) {
+-        tile.aborted = true;
+-
+-        if (tile.request) {
+-            tile.request.abort();
+-            delete tile.request;
+-        }
+-    },
+-
+-    _addTile: function(tile) {
+-        this.fire('tile.add', {tile: tile});
+-    },
+-
+-    _removeTile: function(tile) {
+-        this.fire('tile.remove', {tile: tile});
+-    },
++/**
++ * Set the components of a vec4 to the given values
++ *
++ * @param {vec4} out the receiving vector
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {vec4} out
++ */
++vec4.set = function(out, x, y, z, w) {
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    out[3] = w;
++    return out;
++};
+ 
+-    _unloadTile: function(tile) {
+-        if (tile.texture) this.map.painter.saveTexture(tile.texture);
+-    }
+-});
++/**
++ * Adds two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    return out;
++};
+ 
+-},{"../util/ajax":104,"../util/evented":111,"../util/mapbox":116,"../util/util":119,"./source":49}],49:[function(require,module,exports){
+-'use strict';
++/**
++ * Subtracts vector b from vector a
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    return out;
++};
+ 
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var browser = require('../util/browser');
+-var TilePyramid = require('./tile_pyramid');
+-var normalizeURL = require('../util/mapbox').normalizeSourceURL;
+-var TileCoord = require('./tile_coord');
++/**
++ * Alias for {@link vec4.subtract}
++ * @function
++ */
++vec4.sub = vec4.subtract;
+ 
+-exports._loadTileJSON = function(options) {
+-    var loaded = function(err, tileJSON) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
+-        }
++/**
++ * Multiplies two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.multiply = function(out, a, b) {
++    out[0] = a[0] * b[0];
++    out[1] = a[1] * b[1];
++    out[2] = a[2] * b[2];
++    out[3] = a[3] * b[3];
++    return out;
++};
+ 
+-        util.extend(this, util.pick(tileJSON,
+-            ['tiles', 'minzoom', 'maxzoom', 'attribution']));
++/**
++ * Alias for {@link vec4.multiply}
++ * @function
++ */
++vec4.mul = vec4.multiply;
+ 
+-        if (tileJSON.vector_layers) {
+-            this.vectorLayers = tileJSON.vector_layers;
+-            this.vectorLayerIds = this.vectorLayers.map(function(layer) { return layer.id; });
+-        }
++/**
++ * Divides two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.divide = function(out, a, b) {
++    out[0] = a[0] / b[0];
++    out[1] = a[1] / b[1];
++    out[2] = a[2] / b[2];
++    out[3] = a[3] / b[3];
++    return out;
++};
+ 
+-        this._pyramid = new TilePyramid({
+-            tileSize: this.tileSize,
+-            minzoom: this.minzoom,
+-            maxzoom: this.maxzoom,
+-            roundZoom: this.roundZoom,
+-            reparseOverscaled: this.reparseOverscaled,
+-            load: this._loadTile.bind(this),
+-            abort: this._abortTile.bind(this),
+-            unload: this._unloadTile.bind(this),
+-            add: this._addTile.bind(this),
+-            remove: this._removeTile.bind(this),
+-            redoPlacement: this._redoTilePlacement ? this._redoTilePlacement.bind(this) : undefined
+-        });
++/**
++ * Alias for {@link vec4.divide}
++ * @function
++ */
++vec4.div = vec4.divide;
+ 
+-        this.fire('load');
+-    }.bind(this);
++/**
++ * Math.ceil the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to ceil
++ * @returns {vec4} out
++ */
++vec4.ceil = function (out, a) {
++    out[0] = Math.ceil(a[0]);
++    out[1] = Math.ceil(a[1]);
++    out[2] = Math.ceil(a[2]);
++    out[3] = Math.ceil(a[3]);
++    return out;
++};
+ 
+-    if (options.url) {
+-        ajax.getJSON(normalizeURL(options.url), loaded);
+-    } else {
+-        browser.frame(loaded.bind(this, null, options));
+-    }
++/**
++ * Math.floor the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to floor
++ * @returns {vec4} out
++ */
++vec4.floor = function (out, a) {
++    out[0] = Math.floor(a[0]);
++    out[1] = Math.floor(a[1]);
++    out[2] = Math.floor(a[2]);
++    out[3] = Math.floor(a[3]);
++    return out;
+ };
+ 
+-exports.redoPlacement = function() {
+-    if (!this._pyramid) {
+-        return;
+-    }
++/**
++ * Returns the minimum of two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.min = function(out, a, b) {
++    out[0] = Math.min(a[0], b[0]);
++    out[1] = Math.min(a[1], b[1]);
++    out[2] = Math.min(a[2], b[2]);
++    out[3] = Math.min(a[3], b[3]);
++    return out;
++};
+ 
+-    var ids = this._pyramid.orderedIDs();
+-    for (var i = 0; i < ids.length; i++) {
+-        var tile = this._pyramid.getTile(ids[i]);
+-        this._redoTilePlacement(tile);
+-    }
++/**
++ * Returns the maximum of two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.max = function(out, a, b) {
++    out[0] = Math.max(a[0], b[0]);
++    out[1] = Math.max(a[1], b[1]);
++    out[2] = Math.max(a[2], b[2]);
++    out[3] = Math.max(a[3], b[3]);
++    return out;
+ };
+ 
+-exports._getTile = function(coord) {
+-    return this._pyramid.getTile(coord.id);
++/**
++ * Math.round the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to round
++ * @returns {vec4} out
++ */
++vec4.round = function (out, a) {
++    out[0] = Math.round(a[0]);
++    out[1] = Math.round(a[1]);
++    out[2] = Math.round(a[2]);
++    out[3] = Math.round(a[3]);
++    return out;
+ };
+ 
+-exports._getVisibleCoordinates = function() {
+-    if (!this._pyramid) return [];
+-    else return this._pyramid.renderedIDs().map(TileCoord.fromID);
++/**
++ * Scales a vec4 by a scalar number
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {vec4} out
++ */
++vec4.scale = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    return out;
+ };
+ 
+-function sortTilesIn(a, b) {
+-    var coordA = a.tile.coord;
+-    var coordB = b.tile.coord;
+-    return (coordA.z - coordB.z) || (coordA.y - coordB.y) || (coordA.x - coordB.x);
+-}
++/**
++ * Adds two vec4's after scaling the second operand by a scalar value
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @param {Number} scale the amount to scale b by before adding
++ * @returns {vec4} out
++ */
++vec4.scaleAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    return out;
++};
+ 
+-function mergeRenderedFeatureLayers(tiles) {
+-    var result = tiles[0] || {};
+-    for (var i = 1; i < tiles.length; i++) {
+-        var tile = tiles[i];
+-        for (var layerID in tile) {
+-            var tileFeatures = tile[layerID];
+-            var resultFeatures = result[layerID];
+-            if (resultFeatures === undefined) {
+-                resultFeatures = result[layerID] = tileFeatures;
+-            } else {
+-                for (var f = 0; f < tileFeatures.length; f++) {
+-                    resultFeatures.push(tileFeatures[f]);
+-                }
+-            }
+-        }
+-    }
+-    return result;
+-}
++/**
++ * Calculates the euclidian distance between two vec4's
++ *
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {Number} distance between a and b
++ */
++vec4.distance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2],
++        w = b[3] - a[3];
++    return Math.sqrt(x*x + y*y + z*z + w*w);
++};
+ 
+-exports._queryRenderedVectorFeatures = function(queryGeometry, params, zoom, bearing) {
+-    if (!this._pyramid)
+-        return {};
++/**
++ * Alias for {@link vec4.distance}
++ * @function
++ */
++vec4.dist = vec4.distance;
+ 
+-    var tilesIn = this._pyramid.tilesIn(queryGeometry);
++/**
++ * Calculates the squared euclidian distance between two vec4's
++ *
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {Number} squared distance between a and b
++ */
++vec4.squaredDistance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2],
++        w = b[3] - a[3];
++    return x*x + y*y + z*z + w*w;
++};
+ 
+-    tilesIn.sort(sortTilesIn);
++/**
++ * Alias for {@link vec4.squaredDistance}
++ * @function
++ */
++vec4.sqrDist = vec4.squaredDistance;
+ 
+-    var styleLayers = this.map.style._layers;
++/**
++ * Calculates the length of a vec4
++ *
++ * @param {vec4} a vector to calculate length of
++ * @returns {Number} length of a
++ */
++vec4.length = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2],
++        w = a[3];
++    return Math.sqrt(x*x + y*y + z*z + w*w);
++};
+ 
+-    var renderedFeatureLayers = [];
+-    for (var r = 0; r < tilesIn.length; r++) {
+-        var tileIn = tilesIn[r];
+-        if (!tileIn.tile.featureIndex) continue;
++/**
++ * Alias for {@link vec4.length}
++ * @function
++ */
++vec4.len = vec4.length;
+ 
+-        renderedFeatureLayers.push(tileIn.tile.featureIndex.query({
+-            queryGeometry: tileIn.queryGeometry,
+-            scale: tileIn.scale,
+-            tileSize: tileIn.tile.tileSize,
+-            bearing: bearing,
+-            params: params
+-        }, styleLayers));
+-    }
+-    return mergeRenderedFeatureLayers(renderedFeatureLayers);
++/**
++ * Calculates the squared length of a vec4
++ *
++ * @param {vec4} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ */
++vec4.squaredLength = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2],
++        w = a[3];
++    return x*x + y*y + z*z + w*w;
+ };
+ 
+-exports._querySourceFeatures = function(params) {
+-    if (!this._pyramid) {
+-        return [];
+-    }
++/**
++ * Alias for {@link vec4.squaredLength}
++ * @function
++ */
++vec4.sqrLen = vec4.squaredLength;
+ 
+-    var pyramid = this._pyramid;
+-    var tiles = pyramid.renderedIDs().map(function(id) {
+-        return pyramid.getTile(id);
+-    });
++/**
++ * Negates the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to negate
++ * @returns {vec4} out
++ */
++vec4.negate = function(out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    out[3] = -a[3];
++    return out;
++};
+ 
+-    var result = [];
++/**
++ * Returns the inverse of the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to invert
++ * @returns {vec4} out
++ */
++vec4.inverse = function(out, a) {
++  out[0] = 1.0 / a[0];
++  out[1] = 1.0 / a[1];
++  out[2] = 1.0 / a[2];
++  out[3] = 1.0 / a[3];
++  return out;
++};
+ 
+-    var dataTiles = {};
+-    for (var i = 0; i < tiles.length; i++) {
+-        var tile = tiles[i];
+-        var dataID = new TileCoord(Math.min(tile.sourceMaxZoom, tile.coord.z), tile.coord.x, tile.coord.y, 0).id;
+-        if (!dataTiles[dataID]) {
+-            dataTiles[dataID] = true;
+-            tile.querySourceFeatures(result, params);
+-        }
++/**
++ * Normalize a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to normalize
++ * @returns {vec4} out
++ */
++vec4.normalize = function(out, a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2],
++        w = a[3];
++    var len = x*x + y*y + z*z + w*w;
++    if (len > 0) {
++        len = 1 / Math.sqrt(len);
++        out[0] = x * len;
++        out[1] = y * len;
++        out[2] = z * len;
++        out[3] = w * len;
+     }
++    return out;
++};
+ 
+-    return result;
++/**
++ * Calculates the dot product of two vec4's
++ *
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {Number} dot product of a and b
++ */
++vec4.dot = function (a, b) {
++    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+ };
+ 
+-/*
+- * Create a tiled data source instance given an options object
++/**
++ * Performs a linear interpolation between two vec4's
+  *
+- * @param {Object} options
+- * @param {string} options.type Either `raster` or `vector`.
+- * @param {string} options.url A tile source URL. This should either be `mapbox://{mapid}` or a full `http[s]` url that points to a TileJSON endpoint.
+- * @param {Array} options.tiles An array of tile sources. If `url` is not specified, `tiles` can be used instead to specify tile sources, as in the TileJSON spec. Other TileJSON keys such as `minzoom` and `maxzoom` can be specified in a source object if `tiles` is used.
+- * @param {string} options.id An optional `id` to assign to the source
+- * @param {number} [options.tileSize=512] Optional tile size (width and height in pixels, assuming tiles are square). This option is only configurable for raster sources
+- * @example
+- * var sourceObj = new mapboxgl.Source.create({
+- *    type: 'vector',
+- *    url: 'mapbox://mapbox.mapbox-streets-v5'
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec4} out
+  */
+-exports.create = function(source) {
+-    // This is not at file scope in order to avoid a circular require.
+-    var sources = {
+-        vector: require('./vector_tile_source'),
+-        raster: require('./raster_tile_source'),
+-        geojson: require('./geojson_source'),
+-        video: require('./video_source'),
+-        image: require('./image_source')
+-    };
+-
+-    return exports.is(source) ? source : new sources[source.type](source);
++vec4.lerp = function (out, a, b, t) {
++    var ax = a[0],
++        ay = a[1],
++        az = a[2],
++        aw = a[3];
++    out[0] = ax + t * (b[0] - ax);
++    out[1] = ay + t * (b[1] - ay);
++    out[2] = az + t * (b[2] - az);
++    out[3] = aw + t * (b[3] - aw);
++    return out;
+ };
+ 
+-exports.is = function(source) {
+-    // This is not at file scope in order to avoid a circular require.
+-    var sources = {
+-        vector: require('./vector_tile_source'),
+-        raster: require('./raster_tile_source'),
+-        geojson: require('./geojson_source'),
+-        video: require('./video_source'),
+-        image: require('./image_source')
+-    };
++/**
++ * Generates a random vector with the given scale
++ *
++ * @param {vec4} out the receiving vector
++ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
++ * @returns {vec4} out
++ */
++vec4.random = function (out, scale) {
++    scale = scale || 1.0;
+ 
+-    for (var type in sources) {
+-        if (source instanceof sources[type]) {
+-            return true;
+-        }
+-    }
++    //TODO: This is a pretty awful way of doing this. Find something better.
++    out[0] = glMatrix.RANDOM();
++    out[1] = glMatrix.RANDOM();
++    out[2] = glMatrix.RANDOM();
++    out[3] = glMatrix.RANDOM();
++    vec4.normalize(out, out);
++    vec4.scale(out, out, scale);
++    return out;
++};
+ 
+-    return false;
++/**
++ * Transforms the vec4 with a mat4.
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec4} out
++ */
++vec4.transformMat4 = function(out, a, m) {
++    var x = a[0], y = a[1], z = a[2], w = a[3];
++    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
++    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
++    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
++    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
++    return out;
+ };
+ 
+-},{"../util/ajax":104,"../util/browser":105,"../util/mapbox":116,"../util/util":119,"./geojson_source":44,"./image_source":46,"./raster_tile_source":48,"./tile_coord":51,"./tile_pyramid":52,"./vector_tile_source":53,"./video_source":54}],50:[function(require,module,exports){
+-'use strict';
++/**
++ * Transforms the vec4 with a quat
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to transform
++ * @param {quat} q quaternion to transform with
++ * @returns {vec4} out
++ */
++vec4.transformQuat = function(out, a, q) {
++    var x = a[0], y = a[1], z = a[2],
++        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+ 
+-var util = require('../util/util');
+-var Bucket = require('../data/bucket');
+-var FeatureIndex = require('../data/feature_index');
+-var vt = require('vector-tile');
+-var Protobuf = require('pbf');
+-var GeoJSONFeature = require('../util/vectortile_to_geojson');
+-var featureFilter = require('feature-filter');
+-var CollisionTile = require('../symbol/collision_tile');
+-var CollisionBoxArray = require('../symbol/collision_box');
++        // calculate quat * vec
++        ix = qw * x + qy * z - qz * y,
++        iy = qw * y + qz * x - qx * z,
++        iz = qw * z + qx * y - qy * x,
++        iw = -qx * x - qy * y - qz * z;
+ 
+-module.exports = Tile;
++    // calculate result * inverse quat
++    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
++    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
++    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
++    out[3] = a[3];
++    return out;
++};
+ 
+ /**
+- * A tile object is the combination of a Coordinate, which defines
+- * its place, as well as a unique ID and data tracking for its content
++ * Perform some operation over an array of vec4s.
+  *
+- * @param {Coordinate} coord
+- * @param {number} size
+- * @private
++ * @param {Array} a the array of vectors to iterate over
++ * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed
++ * @param {Number} offset Number of elements to skip at the beginning of the array
++ * @param {Number} count Number of vec4s to iterate over. If 0 iterates over entire array
++ * @param {Function} fn Function to call for each vector in the array
++ * @param {Object} [arg] additional argument to pass to fn
++ * @returns {Array} a
++ * @function
+  */
+-function Tile(coord, size, sourceMaxZoom) {
+-    this.coord = coord;
+-    this.uid = util.uniqueId();
+-    this.loaded = false; // TODO rename loaded
+-    this.isUnloaded = false;
+-    this.uses = 0;
+-    this.tileSize = size;
+-    this.sourceMaxZoom = sourceMaxZoom;
+-    this.buckets = {};
+-}
++vec4.forEach = (function() {
++    var vec = vec4.create();
+ 
+-Tile.prototype = {
++    return function(a, stride, offset, count, fn, arg) {
++        var i, l;
++        if(!stride) {
++            stride = 4;
++        }
+ 
+-    /**
+-     * Given a data object with a 'buffers' property, load it into
+-     * this tile's elementGroups and buffers properties and set loaded
+-     * to true. If the data is null, like in the case of an empty
+-     * GeoJSON tile, no-op but still set loaded to true.
+-     * @param {Object} data
+-     * @returns {undefined}
+-     * @private
+-     */
+-    loadVectorData: function(data, style) {
+-        this.loaded = true;
++        if(!offset) {
++            offset = 0;
++        }
++        
++        if(count) {
++            l = Math.min((count * stride) + offset, a.length);
++        } else {
++            l = a.length;
++        }
+ 
+-        // empty GeoJSON tile
+-        if (!data) return;
++        for(i = offset; i < l; i += stride) {
++            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2]; vec[3] = a[i+3];
++            fn(vec, vec, arg);
++            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2]; a[i+3] = vec[3];
++        }
++        
++        return a;
++    };
++})();
+ 
+-        this.collisionBoxArray = new CollisionBoxArray(data.collisionBoxArray);
+-        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
+-        this.featureIndex = new FeatureIndex(data.featureIndex, data.rawTileData, this.collisionTile);
+-        this.rawTileData = data.rawTileData;
+-        this.buckets = unserializeBuckets(data.buckets, style);
+-    },
++/**
++ * Returns a string representation of a vector
++ *
++ * @param {vec4} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++vec4.str = function (a) {
++    return 'vec4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
++};
+ 
+-    /**
+-     * given a data object and a GL painter, destroy and re-create
+-     * all of its buffers.
+-     * @param {Object} data
+-     * @param {Object} painter
+-     * @returns {undefined}
+-     * @private
+-     */
+-    reloadSymbolData: function(data, painter, style) {
+-        if (this.isUnloaded) return;
++/**
++ * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {vec4} a The first vector.
++ * @param {vec4} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec4.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
++};
+ 
+-        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
+-        this.featureIndex.setCollisionTile(this.collisionTile);
++/**
++ * Returns whether or not the vectors have approximately the same elements in the same position.
++ *
++ * @param {vec4} a The first vector.
++ * @param {vec4} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec4.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
++};
+ 
+-        // Destroy and delete existing symbol buckets
+-        for (var id in this.buckets) {
+-            var bucket = this.buckets[id];
+-            if (bucket.type === 'symbol') {
+-                bucket.destroy(painter.gl);
+-                delete this.buckets[id];
+-            }
+-        }
++module.exports = vec4;
+ 
+-        // Add new symbol buckets
+-        util.extend(this.buckets, unserializeBuckets(data.buckets, style));
+-    },
++},{"./common.js":25}],34:[function(require,module,exports){
++'use strict';
+ 
+-    /**
+-     * Make sure that this tile doesn't own any data within a given
+-     * painter, so that it doesn't consume any memory or maintain
+-     * any references to the painter.
+-     * @param {Object} painter gl painter object
+-     * @returns {undefined}
+-     * @private
+-     */
+-    unloadVectorData: function(painter) {
+-        for (var id in this.buckets) {
+-            var bucket = this.buckets[id];
+-            bucket.destroy(painter.gl);
+-        }
++module.exports = GridIndex;
+ 
+-        this.collisionBoxArray = null;
+-        this.collisionTile = null;
+-        this.featureIndex = null;
+-        this.rawTileData = null;
+-        this.buckets = null;
+-        this.loaded = false;
+-        this.isUnloaded = true;
+-    },
++var NUM_PARAMS = 3;
+ 
+-    redoPlacement: function(source) {
+-        if (!this.loaded || this.redoingPlacement) {
+-            this.redoWhenDone = true;
+-            return;
+-        }
++function GridIndex(extent, n, padding) {
++    var cells = this.cells = [];
+ 
+-        this.redoingPlacement = true;
++    if (extent instanceof ArrayBuffer) {
++        this.arrayBuffer = extent;
++        var array = new Int32Array(this.arrayBuffer);
++        extent = array[0];
++        n = array[1];
++        padding = array[2];
+ 
+-        source.dispatcher.send('redo placement', {
+-            uid: this.uid,
+-            source: source.id,
+-            angle: source.map.transform.angle,
+-            pitch: source.map.transform.pitch,
+-            showCollisionBoxes: source.map.showCollisionBoxes
+-        }, done.bind(this), this.workerID);
++        this.d = n + 2 * padding;
++        for (var k = 0; k < this.d * this.d; k++) {
++            var start = array[NUM_PARAMS + k];
++            var end = array[NUM_PARAMS + k + 1];
++            cells.push(start === end ?
++                    null :
++                    array.subarray(start, end));
++        }
++        var keysOffset = array[NUM_PARAMS + cells.length];
++        var bboxesOffset = array[NUM_PARAMS + cells.length + 1];
++        this.keys = array.subarray(keysOffset, bboxesOffset);
++        this.bboxes = array.subarray(bboxesOffset);
+ 
+-        function done(_, data) {
+-            this.reloadSymbolData(data, source.map.painter, source.map.style);
+-            source.fire('tile.load', {tile: this});
++        this.insert = this._insertReadonly;
+ 
+-            this.redoingPlacement = false;
+-            if (this.redoWhenDone) {
+-                this.redoPlacement(source);
+-                this.redoWhenDone = false;
+-            }
++    } else {
++        this.d = n + 2 * padding;
++        for (var i = 0; i < this.d * this.d; i++) {
++            cells.push([]);
+         }
+-    },
++        this.keys = [];
++        this.bboxes = [];
++    }
+ 
+-    getBucket: function(layer) {
+-        return this.buckets && this.buckets[layer.ref || layer.id];
+-    },
++    this.n = n;
++    this.extent = extent;
++    this.padding = padding;
++    this.scale = n / extent;
++    this.uid = 0;
+ 
+-    querySourceFeatures: function(result, params) {
+-        if (!this.rawTileData) return;
++    var p = (padding / n) * extent;
++    this.min = -p;
++    this.max = extent + p;
++}
+ 
+-        if (!this.vtLayers) {
+-            this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
+-        }
+ 
+-        var layer = this.vtLayers._geojsonTileLayer || this.vtLayers[params.sourceLayer];
++GridIndex.prototype.insert = function(key, x1, y1, x2, y2) {
++    this._forEachCell(x1, y1, x2, y2, this._insertCell, this.uid++);
++    this.keys.push(key);
++    this.bboxes.push(x1);
++    this.bboxes.push(y1);
++    this.bboxes.push(x2);
++    this.bboxes.push(y2);
++};
+ 
+-        if (!layer) return;
++GridIndex.prototype._insertReadonly = function() {
++    throw 'Cannot insert into a GridIndex created from an ArrayBuffer.';
++};
+ 
+-        var filter = featureFilter(params.filter);
+-        var coord = { z: this.coord.z, x: this.coord.x, y: this.coord.y };
++GridIndex.prototype._insertCell = function(x1, y1, x2, y2, cellIndex, uid) {
++    this.cells[cellIndex].push(uid);
++};
+ 
+-        for (var i = 0; i < layer.length; i++) {
+-            var feature = layer.feature(i);
+-            if (filter(feature)) {
+-                var geojsonFeature = new GeoJSONFeature(feature, this.coord.z, this.coord.x, this.coord.y);
+-                geojsonFeature.tile = coord;
+-                result.push(geojsonFeature);
++GridIndex.prototype.query = function(x1, y1, x2, y2) {
++    var min = this.min;
++    var max = this.max;
++    if (x1 <= min && y1 <= min && max <= x2 && max <= y2) {
++        return this.keys.slice();
++
++    } else {
++        var result = [];
++        var seenUids = {};
++        this._forEachCell(x1, y1, x2, y2, this._queryCell, result, seenUids);
++        return result;
++    }
++};
++
++GridIndex.prototype._queryCell = function(x1, y1, x2, y2, cellIndex, result, seenUids) {
++    var cell = this.cells[cellIndex];
++    if (cell !== null) {
++        var keys = this.keys;
++        var bboxes = this.bboxes;
++        for (var u = 0; u < cell.length; u++) {
++            var uid = cell[u];
++            if (seenUids[uid] === undefined) {
++                var offset = uid * 4;
++                if ((x1 <= bboxes[offset + 2]) &&
++                    (y1 <= bboxes[offset + 3]) &&
++                    (x2 >= bboxes[offset + 0]) &&
++                    (y2 >= bboxes[offset + 1])) {
++                    seenUids[uid] = true;
++                    result.push(keys[uid]);
++                } else {
++                    seenUids[uid] = false;
++                }
+             }
+         }
+     }
+ };
+ 
+-function unserializeBuckets(input, style) {
+-    var output = {};
+-    for (var i = 0; i < input.length; i++) {
+-        var layer = style.getLayer(input[i].layerId);
+-        if (!layer) continue;
+-
+-        var bucket = Bucket.create(util.extend({
+-            layer: layer,
+-            childLayers: input[i].childLayerIds
+-                .map(style.getLayer.bind(style))
+-                .filter(function(layer) { return layer; })
+-        }, input[i]));
+-        output[bucket.id] = bucket;
++GridIndex.prototype._forEachCell = function(x1, y1, x2, y2, fn, arg1, arg2) {
++    var cx1 = this._convertToCellCoord(x1);
++    var cy1 = this._convertToCellCoord(y1);
++    var cx2 = this._convertToCellCoord(x2);
++    var cy2 = this._convertToCellCoord(y2);
++    for (var x = cx1; x <= cx2; x++) {
++        for (var y = cy1; y <= cy2; y++) {
++            var cellIndex = this.d * y + x;
++            if (fn.call(this, x1, y1, x2, y2, cellIndex, arg1, arg2)) return;
++        }
+     }
+-    return output;
+-}
++};
+ 
+-},{"../data/bucket":17,"../data/feature_index":23,"../symbol/collision_box":76,"../symbol/collision_tile":78,"../util/util":119,"../util/vectortile_to_geojson":120,"feature-filter":122,"pbf":172,"vector-tile":183}],51:[function(require,module,exports){
+-'use strict';
++GridIndex.prototype._convertToCellCoord = function(x) {
++    return Math.max(0, Math.min(this.d - 1, Math.floor(x * this.scale) + this.padding));
++};
+ 
+-var assert = require('assert');
+-var Coordinate = require('../geo/coordinate');
++GridIndex.prototype.toArrayBuffer = function() {
++    if (this.arrayBuffer) return this.arrayBuffer;
+ 
+-module.exports = TileCoord;
++    var cells = this.cells;
+ 
+-function TileCoord(z, x, y, w) {
+-    assert(!isNaN(z) && z >= 0 && z % 1 === 0);
+-    assert(!isNaN(x) && x >= 0 && x % 1 === 0);
+-    assert(!isNaN(y) && y >= 0 && y % 1 === 0);
++    var metadataLength = NUM_PARAMS + this.cells.length + 1 + 1;
++    var totalCellLength = 0;
++    for (var i = 0; i < this.cells.length; i++) {
++        totalCellLength += this.cells[i].length;
++    }
+ 
+-    if (isNaN(w)) w = 0;
++    var array = new Int32Array(metadataLength + totalCellLength + this.keys.length + this.bboxes.length);
++    array[0] = this.extent;
++    array[1] = this.n;
++    array[2] = this.padding;
+ 
+-    this.z = +z;
+-    this.x = +x;
+-    this.y = +y;
+-    this.w = +w;
++    var offset = metadataLength;
++    for (var k = 0; k < cells.length; k++) {
++        var cell = cells[k];
++        array[NUM_PARAMS + k] = offset;
++        array.set(cell, offset);
++        offset += cell.length;
++    }
+ 
+-    // calculate id
+-    w *= 2;
+-    if (w < 0) w = w * -1 - 1;
+-    var dim = 1 << this.z;
+-    this.id = ((dim * dim * w + dim * this.y + this.x) * 32) + this.z;
++    array[NUM_PARAMS + cells.length] = offset;
++    array.set(this.keys, offset);
++    offset += this.keys.length;
+ 
+-    // for caching pos matrix calculation when rendering
+-    this.posMatrix = null;
+-}
++    array[NUM_PARAMS + cells.length + 1] = offset;
++    array.set(this.bboxes, offset);
++    offset += this.bboxes.length;
+ 
+-TileCoord.prototype.toString = function() {
+-    return this.z + "/" + this.x + "/" + this.y;
++    return array.buffer;
+ };
+ 
+-TileCoord.prototype.toCoordinate = function(sourceMaxZoom) {
+-    var zoom = Math.min(this.z, sourceMaxZoom);
+-    var tileScale = Math.pow(2, zoom);
+-    var row = this.y;
+-    var column = this.x + tileScale * this.w;
+-    return new Coordinate(column, row, zoom);
+-};
++},{}],35:[function(require,module,exports){
++exports.read = function (buffer, offset, isLE, mLen, nBytes) {
++  var e, m
++  var eLen = nBytes * 8 - mLen - 1
++  var eMax = (1 << eLen) - 1
++  var eBias = eMax >> 1
++  var nBits = -7
++  var i = isLE ? (nBytes - 1) : 0
++  var d = isLE ? -1 : 1
++  var s = buffer[offset + i]
+ 
+-// Parse a packed integer id into a TileCoord object
+-TileCoord.fromID = function(id) {
+-    var z = id % 32, dim = 1 << z;
+-    var xy = ((id - z) / 32);
+-    var x = xy % dim, y = ((xy - x) / dim) % dim;
+-    var w = Math.floor(xy / (dim * dim));
+-    if (w % 2 !== 0) w = w * -1 - 1;
+-    w /= 2;
+-    return new TileCoord(z, x, y, w);
+-};
++  i += d
+ 
+-// given a list of urls, choose a url template and return a tile URL
+-TileCoord.prototype.url = function(urls, sourceMaxZoom) {
+-    return urls[(this.x + this.y) % urls.length]
+-        .replace('{prefix}', (this.x % 16).toString(16) + (this.y % 16).toString(16))
+-        .replace('{z}', Math.min(this.z, sourceMaxZoom || this.z))
+-        .replace('{x}', this.x)
+-        .replace('{y}', this.y);
+-};
++  e = s & ((1 << (-nBits)) - 1)
++  s >>= (-nBits)
++  nBits += eLen
++  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+ 
+-// Return the coordinate of the parent tile
+-TileCoord.prototype.parent = function(sourceMaxZoom) {
+-    if (this.z === 0) return null;
++  m = e & ((1 << (-nBits)) - 1)
++  e >>= (-nBits)
++  nBits += mLen
++  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+ 
+-    // the id represents an overscaled tile, return the same coordinates with a lower z
+-    if (this.z > sourceMaxZoom) {
+-        return new TileCoord(this.z - 1, this.x, this.y, this.w);
+-    }
++  if (e === 0) {
++    e = 1 - eBias
++  } else if (e === eMax) {
++    return m ? NaN : ((s ? -1 : 1) * Infinity)
++  } else {
++    m = m + Math.pow(2, mLen)
++    e = e - eBias
++  }
++  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
++}
+ 
+-    return new TileCoord(this.z - 1, Math.floor(this.x / 2), Math.floor(this.y / 2), this.w);
+-};
++exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
++  var e, m, c
++  var eLen = nBytes * 8 - mLen - 1
++  var eMax = (1 << eLen) - 1
++  var eBias = eMax >> 1
++  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
++  var i = isLE ? 0 : (nBytes - 1)
++  var d = isLE ? 1 : -1
++  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+ 
+-TileCoord.prototype.wrapped = function() {
+-    return new TileCoord(this.z, this.x, this.y, 0);
+-};
++  value = Math.abs(value)
+ 
+-// Return the coordinates of the tile's children
+-TileCoord.prototype.children = function(sourceMaxZoom) {
++  if (isNaN(value) || value === Infinity) {
++    m = isNaN(value) ? 1 : 0
++    e = eMax
++  } else {
++    e = Math.floor(Math.log(value) / Math.LN2)
++    if (value * (c = Math.pow(2, -e)) < 1) {
++      e--
++      c *= 2
++    }
++    if (e + eBias >= 1) {
++      value += rt / c
++    } else {
++      value += rt * Math.pow(2, 1 - eBias)
++    }
++    if (value * c >= 2) {
++      e++
++      c /= 2
++    }
+ 
+-    if (this.z >= sourceMaxZoom) {
+-        // return a single tile coord representing a an overscaled tile
+-        return [new TileCoord(this.z + 1, this.x, this.y, this.w)];
++    if (e + eBias >= eMax) {
++      m = 0
++      e = eMax
++    } else if (e + eBias >= 1) {
++      m = (value * c - 1) * Math.pow(2, mLen)
++      e = e + eBias
++    } else {
++      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
++      e = 0
+     }
++  }
+ 
+-    var z = this.z + 1;
+-    var x = this.x * 2;
+-    var y = this.y * 2;
+-    return [
+-        new TileCoord(z, x, y, this.w),
+-        new TileCoord(z, x + 1, y, this.w),
+-        new TileCoord(z, x, y + 1, this.w),
+-        new TileCoord(z, x + 1, y + 1, this.w)
+-    ];
+-};
++  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+ 
+-// Taken from polymaps src/Layer.js
+-// https://github.com/simplegeo/polymaps/blob/master/src/Layer.js#L333-L383
++  e = (e << mLen) | m
++  eLen += mLen
++  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+ 
+-function edge(a, b) {
+-    if (a.row > b.row) { var t = a; a = b; b = t; }
+-    return {
+-        x0: a.column,
+-        y0: a.row,
+-        x1: b.column,
+-        y1: b.row,
+-        dx: b.column - a.column,
+-        dy: b.row - a.row
+-    };
++  buffer[offset + i - d] |= s * 128
+ }
+ 
+-function scanSpans(e0, e1, ymin, ymax, scanLine) {
+-    var y0 = Math.max(ymin, Math.floor(e1.y0));
+-    var y1 = Math.min(ymax, Math.ceil(e1.y1));
++},{}],36:[function(require,module,exports){
++'use strict';
+ 
+-    // sort edges by x-coordinate
+-    if ((e0.x0 === e1.x0 && e0.y0 === e1.y0) ?
+-            (e0.x0 + e1.dy / e0.dy * e0.dx < e1.x1) :
+-            (e0.x1 - e1.dy / e0.dy * e0.dx < e1.x0)) {
+-        var t = e0; e0 = e1; e1 = t;
+-    }
++var sort = require('./sort');
++var range = require('./range');
++var within = require('./within');
+ 
+-    // scan lines!
+-    var m0 = e0.dx / e0.dy;
+-    var m1 = e1.dx / e1.dy;
+-    var d0 = e0.dx > 0; // use y + 1 to compute x0
+-    var d1 = e1.dx < 0; // use y + 1 to compute x1
+-    for (var y = y0; y < y1; y++) {
+-        var x0 = m0 * Math.max(0, Math.min(e0.dy, y + d0 - e0.y0)) + e0.x0;
+-        var x1 = m1 * Math.max(0, Math.min(e1.dy, y + d1 - e1.y0)) + e1.x0;
+-        scanLine(Math.floor(x1), Math.ceil(x0), y);
+-    }
++module.exports = kdbush;
++
++function kdbush(points, getX, getY, nodeSize, ArrayType) {
++    return new KDBush(points, getX, getY, nodeSize, ArrayType);
+ }
+ 
+-function scanTriangle(a, b, c, ymin, ymax, scanLine) {
+-    var ab = edge(a, b),
+-        bc = edge(b, c),
+-        ca = edge(c, a);
++function KDBush(points, getX, getY, nodeSize, ArrayType) {
++    getX = getX || defaultGetX;
++    getY = getY || defaultGetY;
++    ArrayType = ArrayType || Array;
+ 
+-    var t;
++    this.nodeSize = nodeSize || 64;
++    this.points = points;
+ 
+-    // sort edges by y-length
+-    if (ab.dy > bc.dy) { t = ab; ab = bc; bc = t; }
+-    if (ab.dy > ca.dy) { t = ab; ab = ca; ca = t; }
+-    if (bc.dy > ca.dy) { t = bc; bc = ca; ca = t; }
++    this.ids = new ArrayType(points.length);
++    this.coords = new ArrayType(points.length * 2);
+ 
+-    // scan span! scan span!
+-    if (ab.dy) scanSpans(ca, ab, ymin, ymax, scanLine);
+-    if (bc.dy) scanSpans(ca, bc, ymin, ymax, scanLine);
++    for (var i = 0; i < points.length; i++) {
++        this.ids[i] = i;
++        this.coords[2 * i] = getX(points[i]);
++        this.coords[2 * i + 1] = getY(points[i]);
++    }
++
++    sort(this.ids, this.coords, this.nodeSize, 0, this.ids.length - 1, 0);
+ }
+ 
+-TileCoord.cover = function(z, bounds, actualZ) {
+-    var tiles = 1 << z;
+-    var t = {};
++KDBush.prototype = {
++    range: function (minX, minY, maxX, maxY) {
++        return range(this.ids, this.coords, minX, minY, maxX, maxY, this.nodeSize);
++    },
+ 
+-    function scanLine(x0, x1, y) {
+-        var x, wx, coord;
+-        if (y >= 0 && y <= tiles) {
+-            for (x = x0; x < x1; x++) {
+-                wx = (x % tiles + tiles) % tiles;
+-                coord = new TileCoord(actualZ, wx, y, Math.floor(x / tiles));
+-                t[coord.id] = coord;
+-            }
+-        }
++    within: function (x, y, r) {
++        return within(this.ids, this.coords, x, y, r, this.nodeSize);
+     }
+-
+-    // Divide the screen up in two triangles and scan each of them:
+-    // +---/
+-    // | / |
+-    // /---+
+-    scanTriangle(bounds[0], bounds[1], bounds[2], 0, tiles, scanLine);
+-    scanTriangle(bounds[2], bounds[3], bounds[0], 0, tiles, scanLine);
+-
+-    return Object.keys(t).map(function(id) {
+-        return t[id];
+-    });
+ };
+ 
+-},{"../geo/coordinate":25,"assert":6}],52:[function(require,module,exports){
++function defaultGetX(p) { return p[0]; }
++function defaultGetY(p) { return p[1]; }
++
++},{"./range":37,"./sort":38,"./within":39}],37:[function(require,module,exports){
+ 'use strict';
+ 
+-var Tile = require('./tile');
+-var TileCoord = require('./tile_coord');
+-var Point = require('point-geometry');
+-var Cache = require('../util/lru_cache');
+-var Coordinate = require('../geo/coordinate');
+-var util = require('../util/util');
+-var EXTENT = require('../data/bucket').EXTENT;
++module.exports = range;
+ 
+-module.exports = TilePyramid;
++function range(ids, coords, minX, minY, maxX, maxY, nodeSize) {
++    var stack = [0, ids.length - 1, 0];
++    var result = [];
++    var x, y;
+ 
+-/**
+- * A tile pyramid is a specialized cache and datastructure
+- * that contains tiles. It's used by sources to manage their
+- * data.
+- *
+- * @param {Object} options
+- * @param {number} options.tileSize
+- * @param {number} options.minzoom
+- * @param {number} options.maxzoom
+- * @private
+- */
+-function TilePyramid(options) {
+-    this.tileSize = options.tileSize;
+-    this.minzoom = options.minzoom;
+-    this.maxzoom = options.maxzoom;
+-    this.roundZoom = options.roundZoom;
+-    this.reparseOverscaled = options.reparseOverscaled;
++    while (stack.length) {
++        var axis = stack.pop();
++        var right = stack.pop();
++        var left = stack.pop();
+ 
+-    this._load = options.load;
+-    this._abort = options.abort;
+-    this._unload = options.unload;
+-    this._add = options.add;
+-    this._remove = options.remove;
+-    this._redoPlacement = options.redoPlacement;
++        if (right - left <= nodeSize) {
++            for (var i = left; i <= right; i++) {
++                x = coords[2 * i];
++                y = coords[2 * i + 1];
++                if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[i]);
++            }
++            continue;
++        }
+ 
+-    this._tiles = {};
+-    this._cache = new Cache(0, function(tile) { return this._unload(tile); }.bind(this));
++        var m = Math.floor((left + right) / 2);
+ 
+-    this._filterRendered = this._filterRendered.bind(this);
+-}
++        x = coords[2 * m];
++        y = coords[2 * m + 1];
+ 
++        if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[m]);
+ 
+-TilePyramid.maxOverzooming = 10;
+-TilePyramid.maxUnderzooming = 3;
++        var nextAxis = (axis + 1) % 2;
+ 
+-TilePyramid.prototype = {
+-    /**
+-     * Confirm that every tracked tile is loaded.
+-     * @returns {boolean} whether all tiles are loaded.
+-     * @private
+-     */
+-    loaded: function() {
+-        for (var t in this._tiles) {
+-            if (!this._tiles[t].loaded && !this._tiles[t].errored)
+-                return false;
++        if (axis === 0 ? minX <= x : minY <= y) {
++            stack.push(left);
++            stack.push(m - 1);
++            stack.push(nextAxis);
+         }
+-        return true;
+-    },
+-
+-    /**
+-     * Return all tile ids ordered with z-order, and cast to numbers
+-     * @returns {Array<number>} ids
+-     * @private
+-     */
+-    orderedIDs: function() {
+-        return Object.keys(this._tiles).map(Number).sort(compareKeyZoom);
+-    },
+-
+-    renderedIDs: function() {
+-        return this.orderedIDs().filter(this._filterRendered);
+-    },
+-
+-    _filterRendered: function(id) {
+-        return this._tiles[id].loaded && !this._coveredTiles[id];
+-    },
+-
+-    reload: function() {
+-        this._cache.reset();
+-        for (var i in this._tiles) {
+-            this._load(this._tiles[i]);
++        if (axis === 0 ? maxX >= x : maxY >= y) {
++            stack.push(m + 1);
++            stack.push(right);
++            stack.push(nextAxis);
+         }
+-    },
+-
+-    /**
+-     * Get a specific tile by id
+-     * @param {string|number} id tile id
+-     * @returns {Object} tile
+-     * @private
+-     */
+-    getTile: function(id) {
+-        return this._tiles[id];
+-    },
+-
+-    /**
+-     * get the zoom level adjusted for the difference in map and source tilesizes
+-     * @param {Object} transform
+-     * @returns {number} zoom level
+-     * @private
+-     */
+-    getZoom: function(transform) {
+-        return transform.zoom + Math.log(transform.tileSize / this.tileSize) / Math.LN2;
+-    },
++    }
+ 
+-    /**
+-     * Return a zoom level that will cover all tiles in a given transform
+-     * @param {Object} transform
+-     * @returns {number} zoom level
+-     * @private
+-     */
+-    coveringZoomLevel: function(transform) {
+-        return (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
+-    },
++    return result;
++}
+ 
+-    /**
+-     * Given a transform, return all coordinates that could cover that
+-     * transform for a covering zoom level.
+-     * @param {Object} transform
+-     * @returns {Array<Tile>} tiles
+-     * @private
+-     */
+-    coveringTiles: function(transform) {
+-        var z = this.coveringZoomLevel(transform);
+-        var actualZ = z;
++},{}],38:[function(require,module,exports){
++'use strict';
+ 
+-        if (z < this.minzoom) return [];
+-        if (z > this.maxzoom) z = this.maxzoom;
++module.exports = sortKD;
+ 
+-        var tr = transform,
+-            tileCenter = tr.locationCoordinate(tr.center)._zoomTo(z),
+-            centerPoint = new Point(tileCenter.column - 0.5, tileCenter.row - 0.5);
++function sortKD(ids, coords, nodeSize, left, right, depth) {
++    if (right - left <= nodeSize) return;
+ 
+-        return TileCoord.cover(z, [
+-            tr.pointCoordinate(new Point(0, 0))._zoomTo(z),
+-            tr.pointCoordinate(new Point(tr.width, 0))._zoomTo(z),
+-            tr.pointCoordinate(new Point(tr.width, tr.height))._zoomTo(z),
+-            tr.pointCoordinate(new Point(0, tr.height))._zoomTo(z)
+-        ], this.reparseOverscaled ? actualZ : z).sort(function(a, b) {
+-            return centerPoint.dist(a) - centerPoint.dist(b);
+-        });
+-    },
++    var m = Math.floor((left + right) / 2);
+ 
+-    /**
+-     * Recursively find children of the given tile (up to maxCoveringZoom) that are already loaded;
+-     * adds found tiles to retain object; returns true if any child is found.
+-     *
+-     * @param {Coordinate} coord
+-     * @param {number} maxCoveringZoom
+-     * @param {boolean} retain
+-     * @returns {boolean} whether the operation was complete
+-     * @private
+-     */
+-    findLoadedChildren: function(coord, maxCoveringZoom, retain) {
+-        var found = false;
++    select(ids, coords, m, left, right, depth % 2);
+ 
+-        for (var id in this._tiles) {
+-            var tile = this._tiles[id];
++    sortKD(ids, coords, nodeSize, left, m - 1, depth + 1);
++    sortKD(ids, coords, nodeSize, m + 1, right, depth + 1);
++}
+ 
+-            // only consider loaded tiles on higher zoom levels (up to maxCoveringZoom)
+-            if (retain[id] || !tile.loaded || tile.coord.z <= coord.z || tile.coord.z > maxCoveringZoom) continue;
++function select(ids, coords, k, left, right, inc) {
+ 
+-            // disregard tiles that are not descendants of the given tile coordinate
+-            var z2 = Math.pow(2, Math.min(tile.coord.z, this.maxzoom) - Math.min(coord.z, this.maxzoom));
+-            if (Math.floor(tile.coord.x / z2) !== coord.x ||
+-                Math.floor(tile.coord.y / z2) !== coord.y)
+-                continue;
++    while (right > left) {
++        if (right - left > 600) {
++            var n = right - left + 1;
++            var m = k - left + 1;
++            var z = Math.log(n);
++            var s = 0.5 * Math.exp(2 * z / 3);
++            var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
++            var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
++            var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
++            select(ids, coords, k, newLeft, newRight, inc);
++        }
+ 
+-            // found loaded child
+-            retain[id] = true;
+-            found = true;
++        var t = coords[2 * k + inc];
++        var i = left;
++        var j = right;
+ 
+-            // loop through parents; retain the topmost loaded one if found
+-            while (tile && tile.coord.z - 1 > coord.z) {
+-                var parentId = tile.coord.parent(this.maxzoom).id;
+-                tile = this._tiles[parentId];
++        swapItem(ids, coords, left, k);
++        if (coords[2 * right + inc] > t) swapItem(ids, coords, left, right);
+ 
+-                if (tile && tile.loaded) {
+-                    delete retain[id];
+-                    retain[parentId] = true;
+-                }
+-            }
++        while (i < j) {
++            swapItem(ids, coords, i, j);
++            i++;
++            j--;
++            while (coords[2 * i + inc] < t) i++;
++            while (coords[2 * j + inc] > t) j--;
+         }
+-        return found;
+-    },
+ 
+-    /**
+-     * Find a loaded parent of the given tile (up to minCoveringZoom);
+-     * adds the found tile to retain object and returns the tile if found
+-     *
+-     * @param {Coordinate} coord
+-     * @param {number} minCoveringZoom
+-     * @param {boolean} retain
+-     * @returns {Tile} tile object
+-     * @private
+-     */
+-    findLoadedParent: function(coord, minCoveringZoom, retain) {
+-        for (var z = coord.z - 1; z >= minCoveringZoom; z--) {
+-            coord = coord.parent(this.maxzoom);
+-            var tile = this._tiles[coord.id];
+-            if (tile && tile.loaded) {
+-                retain[coord.id] = true;
+-                return tile;
+-            }
+-            if (this._cache.has(coord.id)) {
+-                this.addTile(coord);
+-                retain[coord.id] = true;
+-                return this._tiles[coord.id];
+-            }
++        if (coords[2 * left + inc] === t) swapItem(ids, coords, left, j);
++        else {
++            j++;
++            swapItem(ids, coords, j, right);
+         }
+-    },
+ 
+-    /**
+-     * Resizes the tile cache based on the current viewport's size.
+-     *
+-     * Larger viewports use more tiles and need larger caches. Larger viewports
+-     * are more likely to be found on devices with more memory and on pages where
+-     * the map is more important.
+-     *
+-     * @private
+-     */
+-    updateCacheSize: function(transform) {
+-        var widthInTiles = Math.ceil(transform.width / transform.tileSize) + 1;
+-        var heightInTiles = Math.ceil(transform.height / transform.tileSize) + 1;
+-        var approxTilesInView = widthInTiles * heightInTiles;
+-        var commonZoomRange = 5;
+-        this._cache.setMaxSize(Math.floor(approxTilesInView * commonZoomRange));
+-    },
++        if (j <= k) left = j + 1;
++        if (k <= j) right = j - 1;
++    }
++}
+ 
+-    /**
+-     * Removes tiles that are outside the viewport and adds new tiles that
+-     * are inside the viewport.
+-     * @private
+-     */
+-    update: function(used, transform, fadeDuration) {
+-        var i;
+-        var coord;
+-        var tile;
++function swapItem(ids, coords, i, j) {
++    swap(ids, i, j);
++    swap(coords, 2 * i, 2 * j);
++    swap(coords, 2 * i + 1, 2 * j + 1);
++}
+ 
+-        this.updateCacheSize(transform);
++function swap(arr, i, j) {
++    var tmp = arr[i];
++    arr[i] = arr[j];
++    arr[j] = tmp;
++}
+ 
+-        // Determine the overzooming/underzooming amounts.
+-        var zoom = (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
+-        var minCoveringZoom = Math.max(zoom - TilePyramid.maxOverzooming, this.minzoom);
+-        var maxCoveringZoom = Math.max(zoom + TilePyramid.maxUnderzooming,  this.minzoom);
++},{}],39:[function(require,module,exports){
++'use strict';
+ 
+-        // Retain is a list of tiles that we shouldn't delete, even if they are not
+-        // the most ideal tile for the current viewport. This may include tiles like
+-        // parent or child tiles that are *already* loaded.
+-        var retain = {};
+-        var now = new Date().getTime();
++module.exports = within;
+ 
+-        // Covered is a list of retained tiles who's areas are full covered by other,
+-        // better, retained tiles. They are not drawn separately.
+-        this._coveredTiles = {};
++function within(ids, coords, qx, qy, r, nodeSize) {
++    var stack = [0, ids.length - 1, 0];
++    var result = [];
++    var r2 = r * r;
+ 
+-        var required = used ? this.coveringTiles(transform) : [];
+-        for (i = 0; i < required.length; i++) {
+-            coord = required[i];
+-            tile = this.addTile(coord);
++    while (stack.length) {
++        var axis = stack.pop();
++        var right = stack.pop();
++        var left = stack.pop();
+ 
+-            retain[coord.id] = true;
++        if (right - left <= nodeSize) {
++            for (var i = left; i <= right; i++) {
++                if (sqDist(coords[2 * i], coords[2 * i + 1], qx, qy) <= r2) result.push(ids[i]);
++            }
++            continue;
++        }
+ 
+-            if (tile.loaded)
+-                continue;
++        var m = Math.floor((left + right) / 2);
+ 
+-            // The tile we require is not yet loaded.
+-            // Retain child or parent tiles that cover the same area.
+-            if (!this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
+-                this.findLoadedParent(coord, minCoveringZoom, retain);
+-            }
+-        }
++        var x = coords[2 * m];
++        var y = coords[2 * m + 1];
+ 
+-        var parentsForFading = {};
++        if (sqDist(x, y, qx, qy) <= r2) result.push(ids[m]);
+ 
+-        var ids = Object.keys(retain);
+-        for (var k = 0; k < ids.length; k++) {
+-            var id = ids[k];
+-            coord = TileCoord.fromID(id);
+-            tile = this._tiles[id];
+-            if (tile && tile.timeAdded > now - (fadeDuration || 0)) {
+-                // This tile is still fading in. Find tiles to cross-fade with it.
+-                if (this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
+-                    retain[id] = true;
+-                }
+-                this.findLoadedParent(coord, minCoveringZoom, parentsForFading);
+-            }
+-        }
++        var nextAxis = (axis + 1) % 2;
+ 
+-        var fadedParent;
+-        for (fadedParent in parentsForFading) {
+-            if (!retain[fadedParent]) {
+-                // If a tile is only needed for fading, mark it as covered so that it isn't rendered on it's own.
+-                this._coveredTiles[fadedParent] = true;
+-            }
++        if (axis === 0 ? qx - r <= x : qy - r <= y) {
++            stack.push(left);
++            stack.push(m - 1);
++            stack.push(nextAxis);
+         }
+-        for (fadedParent in parentsForFading) {
+-            retain[fadedParent] = true;
++        if (axis === 0 ? qx + r >= x : qy + r >= y) {
++            stack.push(m + 1);
++            stack.push(right);
++            stack.push(nextAxis);
+         }
++    }
+ 
+-        // Remove the tiles we don't need anymore.
+-        var remove = util.keysDifference(this._tiles, retain);
+-        for (i = 0; i < remove.length; i++) {
+-            this.removeTile(+remove[i]);
+-        }
++    return result;
++}
+ 
+-        this.transform = transform;
+-    },
++function sqDist(ax, ay, bx, by) {
++    var dx = ax - bx;
++    var dy = ay - by;
++    return dx * dx + dy * dy;
++}
+ 
+-    /**
+-     * Add a tile, given its coordinate, to the pyramid.
+-     * @param {Coordinate} coord
+-     * @returns {Coordinate} the coordinate.
+-     * @private
+-     */
+-    addTile: function(coord) {
+-        var tile = this._tiles[coord.id];
+-        if (tile)
+-            return tile;
++},{}],40:[function(require,module,exports){
++'use strict';
+ 
+-        var wrapped = coord.wrapped();
+-        tile = this._tiles[wrapped.id];
++function createFunction(parameters, defaultType) {
++    var fun;
+ 
+-        if (!tile) {
+-            tile = this._cache.get(wrapped.id);
+-            if (tile && this._redoPlacement) {
+-                this._redoPlacement(tile);
++    if (!isFunctionDefinition(parameters)) {
++        fun = function() { return parameters; };
++        fun.isFeatureConstant = true;
++        fun.isZoomConstant = true;
++
++    } else {
++        var zoomAndFeatureDependent = typeof parameters.stops[0][0] === 'object';
++        var featureDependent = zoomAndFeatureDependent || parameters.property !== undefined;
++        var zoomDependent = zoomAndFeatureDependent || !featureDependent;
++        var type = parameters.type || defaultType || 'exponential';
++
++        var innerFun;
++        if (type === 'exponential') {
++            innerFun = evaluateExponentialFunction;
++        } else if (type === 'interval') {
++            innerFun = evaluateIntervalFunction;
++        } else if (type === 'categorical') {
++            innerFun = evaluateCategoricalFunction;
++        } else {
++            throw new Error('Unknown function type "' + type + '"');
++        }
++
++        if (zoomAndFeatureDependent) {
++            var featureFunctions = {};
++            var featureFunctionStops = [];
++            for (var s = 0; s < parameters.stops.length; s++) {
++                var stop = parameters.stops[s];
++                if (featureFunctions[stop[0].zoom] === undefined) {
++                    featureFunctions[stop[0].zoom] = {
++                        zoom: stop[0].zoom,
++                        type: parameters.type,
++                        property: parameters.property,
++                        stops: []
++                    };
++                }
++                featureFunctions[stop[0].zoom].stops.push([stop[0].value, stop[1]]);
++            }
++
++            for (var z in featureFunctions) {
++                featureFunctionStops.push([featureFunctions[z].zoom, createFunction(featureFunctions[z])]);
+             }
++            fun = function(zoom, feature) {
++                return evaluateExponentialFunction({ stops: featureFunctionStops, base: parameters.base }, zoom)(zoom, feature);
++            };
++            fun.isFeatureConstant = false;
++            fun.isZoomConstant = false;
++
++        } else if (zoomDependent) {
++            fun = function(zoom) {
++                return innerFun(parameters, zoom);
++            };
++            fun.isFeatureConstant = true;
++            fun.isZoomConstant = false;
++        } else {
++            fun = function(zoom, feature) {
++                return innerFun(parameters, feature[parameters.property]);
++            };
++            fun.isFeatureConstant = false;
++            fun.isZoomConstant = true;
+         }
++    }
+ 
+-        if (!tile) {
+-            var zoom = coord.z;
+-            var overscaling = zoom > this.maxzoom ? Math.pow(2, zoom - this.maxzoom) : 1;
+-            tile = new Tile(wrapped, this.tileSize * overscaling, this.maxzoom);
+-            this._load(tile);
++    return fun;
++}
++
++function evaluateCategoricalFunction(parameters, input) {
++    for (var i = 0; i < parameters.stops.length; i++) {
++        if (input === parameters.stops[i][0]) {
++            return parameters.stops[i][1];
+         }
++    }
++    return parameters.stops[0][1];
++}
+ 
+-        tile.uses++;
+-        this._tiles[coord.id] = tile;
+-        this._add(tile, coord);
++function evaluateIntervalFunction(parameters, input) {
++    for (var i = 0; i < parameters.stops.length; i++) {
++        if (input < parameters.stops[i][0]) break;
++    }
++    return parameters.stops[Math.max(i - 1, 0)][1];
++}
+ 
+-        return tile;
+-    },
++function evaluateExponentialFunction(parameters, input) {
++    var base = parameters.base !== undefined ? parameters.base : 1;
+ 
+-    /**
+-     * Remove a tile, given its id, from the pyramid
+-     * @param {string|number} id tile id
+-     * @returns {undefined} nothing
+-     * @private
+-     */
+-    removeTile: function(id) {
+-        var tile = this._tiles[id];
+-        if (!tile)
+-            return;
++    var i = 0;
++    while (true) {
++        if (i >= parameters.stops.length) break;
++        else if (input <= parameters.stops[i][0]) break;
++        else i++;
++    }
+ 
+-        tile.uses--;
+-        delete this._tiles[id];
+-        this._remove(tile);
++    if (i === 0) {
++        return parameters.stops[i][1];
+ 
+-        if (tile.uses > 0)
+-            return;
++    } else if (i === parameters.stops.length) {
++        return parameters.stops[i - 1][1];
+ 
+-        if (tile.loaded) {
+-            this._cache.add(tile.coord.wrapped().id, tile);
+-        } else {
+-            this._abort(tile);
+-            this._unload(tile);
+-        }
+-    },
++    } else {
++        return interpolate(
++            input,
++            base,
++            parameters.stops[i - 1][0],
++            parameters.stops[i][0],
++            parameters.stops[i - 1][1],
++            parameters.stops[i][1]
++        );
++    }
++}
+ 
+-    /**
+-     * Remove all tiles from this pyramid
+-     * @private
+-     */
+-    clearTiles: function() {
+-        for (var id in this._tiles)
+-            this.removeTile(id);
+-        this._cache.reset();
+-    },
+ 
+-    /**
+-     * Search through our current tiles and attempt to find the tiles that
+-     * cover the given bounds.
+-     * @param {Array<Coordinate>} queryGeometry coordinates of the corners of bounding rectangle
+-     * @returns {Array<Object>} result items have {tile, minX, maxX, minY, maxY}, where min/max bounding values are the given bounds transformed in into the coordinate space of this tile.
+-     * @private
+-     */
+-    tilesIn: function(queryGeometry) {
+-        var tileResults = {};
+-        var ids = this.orderedIDs();
++function interpolate(input, base, inputLower, inputUpper, outputLower, outputUpper) {
++    if (typeof outputLower === 'function') {
++        return function() {
++            var evaluatedLower = outputLower.apply(undefined, arguments);
++            var evaluatedUpper = outputUpper.apply(undefined, arguments);
++            return interpolate(input, base, inputLower, inputUpper, evaluatedLower, evaluatedUpper);
++        };
++    } else if (outputLower.length) {
++        return interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper);
++    } else {
++        return interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper);
++    }
++}
+ 
+-        var minX = Infinity;
+-        var minY = Infinity;
+-        var maxX = -Infinity;
+-        var maxY = -Infinity;
+-        var z = queryGeometry[0].zoom;
++function interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper) {
++    var difference =  inputUpper - inputLower;
++    var progress = input - inputLower;
+ 
+-        for (var k = 0; k < queryGeometry.length; k++) {
+-            var p = queryGeometry[k];
+-            minX = Math.min(minX, p.column);
+-            minY = Math.min(minY, p.row);
+-            maxX = Math.max(maxX, p.column);
+-            maxY = Math.max(maxY, p.row);
+-        }
++    var ratio;
++    if (base === 1) {
++        ratio = progress / difference;
++    } else {
++        ratio = (Math.pow(base, progress) - 1) / (Math.pow(base, difference) - 1);
++    }
+ 
+-        for (var i = 0; i < ids.length; i++) {
+-            var tile = this._tiles[ids[i]];
+-            var coord = TileCoord.fromID(ids[i]);
++    return (outputLower * (1 - ratio)) + (outputUpper * ratio);
++}
+ 
+-            var tileSpaceBounds = [
+-                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(minX, minY, z)),
+-                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(maxX, maxY, z))
+-            ];
++function interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper) {
++    var output = [];
++    for (var i = 0; i < outputLower.length; i++) {
++        output[i] = interpolateNumber(input, base, inputLower, inputUpper, outputLower[i], outputUpper[i]);
++    }
++    return output;
++}
+ 
+-            if (tileSpaceBounds[0].x < EXTENT && tileSpaceBounds[0].y < EXTENT &&
+-                tileSpaceBounds[1].x >= 0 && tileSpaceBounds[1].y >= 0) {
++function isFunctionDefinition(value) {
++    return typeof value === 'object' && value.stops;
++}
+ 
+-                var tileSpaceQueryGeometry = [];
+-                for (var j = 0; j < queryGeometry.length; j++) {
+-                    tileSpaceQueryGeometry.push(coordinateToTilePoint(coord, tile.sourceMaxZoom, queryGeometry[j]));
+-                }
+ 
+-                var tileResult = tileResults[tile.coord.id];
+-                if (tileResult === undefined) {
+-                    tileResult = tileResults[tile.coord.id] = {
+-                        tile: tile,
+-                        queryGeometry: [],
+-                        scale: Math.pow(2, this.transform.zoom - tile.coord.z)
+-                    };
+-                }
++module.exports.isFunctionDefinition = isFunctionDefinition;
+ 
+-                // Wrapped tiles share one tileResult object but can have multiple queryGeometry parts
+-                tileResult.queryGeometry.push(tileSpaceQueryGeometry);
+-            }
+-        }
++module.exports.interpolated = function(parameters) {
++    return createFunction(parameters, 'exponential');
++};
+ 
+-        var results = [];
+-        for (var t in tileResults) {
+-            results.push(tileResults[t]);
+-        }
+-        return results;
+-    }
++module.exports['piecewise-constant'] = function(parameters) {
++    return createFunction(parameters, 'interval');
+ };
+ 
++},{}],41:[function(require,module,exports){
++'use strict';
++
++if (typeof module !== 'undefined' && module.exports) {
++    module.exports = isSupported;
++} else if (window) {
++    window.mapboxgl = window.mapboxgl || {};
++    window.mapboxgl.supported = isSupported;
++}
++
+ /**
+- * Convert a coordinate to a point in a tile's coordinate space.
+- * @param {Coordinate} tileCoord
+- * @param {Coordinate} coord
+- * @returns {Object} position
+- * @private
++ * Test whether the current browser supports Mapbox GL JS
++ * @param {Object} options
++ * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
++ *   if the performance of Mapbox GL JS would be dramatically worse than
++ *   expected (i.e. a software renderer is would be used)
++ * @return {boolean}
+  */
+-function coordinateToTilePoint(tileCoord, sourceMaxZoom, coord) {
+-    var zoomedCoord = coord.zoomTo(Math.min(tileCoord.z, sourceMaxZoom));
+-    return {
+-        x: (zoomedCoord.column - (tileCoord.x + tileCoord.w * Math.pow(2, tileCoord.z))) * EXTENT,
+-        y: (zoomedCoord.row - tileCoord.y) * EXTENT
+-    };
++function isSupported(options) {
++    return !!(
++        isBrowser() &&
++        isArraySupported() &&
++        isFunctionSupported() &&
++        isObjectSupported() &&
++        isJSONSupported() &&
++        isWorkerSupported() &&
++        isWebGLSupportedCached(options && options.failIfMajorPerformanceCaveat)
++    );
++}
+ 
++function isBrowser() {
++    return typeof window !== 'undefined' && typeof document !== 'undefined';
+ }
+ 
+-function compareKeyZoom(a, b) {
+-    return (a % 32) - (b % 32);
++function isArraySupported() {
++    return (
++        Array.prototype &&
++        Array.prototype.every &&
++        Array.prototype.filter &&
++        Array.prototype.forEach &&
++        Array.prototype.indexOf &&
++        Array.prototype.lastIndexOf &&
++        Array.prototype.map &&
++        Array.prototype.some &&
++        Array.prototype.reduce &&
++        Array.prototype.reduceRight &&
++        Array.isArray
++    );
+ }
+ 
+-},{"../data/bucket":17,"../geo/coordinate":25,"../util/lru_cache":115,"../util/util":119,"./tile":50,"./tile_coord":51,"point-geometry":174}],53:[function(require,module,exports){
+-'use strict';
++function isFunctionSupported() {
++    return Function.prototype && Function.prototype.bind;
++}
+ 
+-var util = require('../util/util');
+-var Evented = require('../util/evented');
+-var Source = require('./source');
+-var normalizeURL = require('../util/mapbox').normalizeTileURL;
++function isObjectSupported() {
++    return (
++        Object.keys &&
++        Object.create &&
++        Object.getPrototypeOf &&
++        Object.getOwnPropertyNames &&
++        Object.isSealed &&
++        Object.isFrozen &&
++        Object.isExtensible &&
++        Object.getOwnPropertyDescriptor &&
++        Object.defineProperty &&
++        Object.defineProperties &&
++        Object.seal &&
++        Object.freeze &&
++        Object.preventExtensions
++    );
++}
+ 
+-module.exports = VectorTileSource;
++function isJSONSupported() {
++    return 'JSON' in window && 'parse' in JSON && 'stringify' in JSON;
++}
+ 
+-function VectorTileSource(options) {
+-    util.extend(this, util.pick(options, ['url', 'tileSize']));
+-    this._options = util.extend({ type: 'vector' }, options);
++function isWorkerSupported() {
++    return 'Worker' in window;
++}
+ 
+-    if (this.tileSize !== 512) {
+-        throw new Error('vector tile sources must have a tileSize of 512');
++var isWebGLSupportedCache = {};
++function isWebGLSupportedCached(failIfMajorPerformanceCaveat) {
++
++    if (isWebGLSupportedCache[failIfMajorPerformanceCaveat] === undefined) {
++        isWebGLSupportedCache[failIfMajorPerformanceCaveat] = isWebGLSupported(failIfMajorPerformanceCaveat);
+     }
+ 
+-    Source._loadTileJSON.call(this, options);
++    return isWebGLSupportedCache[failIfMajorPerformanceCaveat];
+ }
+ 
+-VectorTileSource.prototype = util.inherit(Evented, {
+-    minzoom: 0,
+-    maxzoom: 22,
+-    tileSize: 512,
+-    reparseOverscaled: true,
+-    _loaded: false,
+-    isTileClipped: true,
+-
+-    onAdd: function(map) {
+-        this.map = map;
+-    },
++isSupported.webGLContextAttributes = {
++    antialias: false,
++    alpha: true,
++    stencil: true,
++    depth: true
++};
+ 
+-    loaded: function() {
+-        return this._pyramid && this._pyramid.loaded();
+-    },
++function isWebGLSupported(failIfMajorPerformanceCaveat) {
+ 
+-    update: function(transform) {
+-        if (this._pyramid) {
+-            this._pyramid.update(this.used, transform);
+-        }
+-    },
++    var canvas = document.createElement('canvas');
+ 
+-    reload: function() {
+-        if (this._pyramid) {
+-            this._pyramid.reload();
+-        }
+-    },
++    var attributes = Object.create(isSupported.webGLContextAttributes);
++    attributes.failIfMajorPerformanceCaveat = failIfMajorPerformanceCaveat;
+ 
+-    serialize: function() {
+-        return util.extend({}, this._options);
+-    },
++    if (canvas.probablySupportsContext) {
++        return (
++            canvas.probablySupportsContext('webgl', attributes) ||
++            canvas.probablySupportsContext('experimental-webgl', attributes)
++        );
+ 
+-    getVisibleCoordinates: Source._getVisibleCoordinates,
+-    getTile: Source._getTile,
++    } else if (canvas.supportsContext) {
++        return (
++            canvas.supportsContext('webgl', attributes) ||
++            canvas.supportsContext('experimental-webgl', attributes)
++        );
+ 
+-    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
+-    querySourceFeatures: Source._querySourceFeatures,
++    } else {
++        return (
++            canvas.getContext('webgl', attributes) ||
++            canvas.getContext('experimental-webgl', attributes)
++        );
++    }
++}
+ 
+-    _loadTile: function(tile) {
+-        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
+-        var params = {
+-            url: normalizeURL(tile.coord.url(this.tiles, this.maxzoom), this.url),
+-            uid: tile.uid,
+-            coord: tile.coord,
+-            zoom: tile.coord.z,
+-            tileSize: this.tileSize * overscaling,
+-            source: this.id,
+-            overscaling: overscaling,
+-            angle: this.map.transform.angle,
+-            pitch: this.map.transform.pitch,
+-            showCollisionBoxes: this.map.showCollisionBoxes
+-        };
++},{}],42:[function(require,module,exports){
++'use strict';
+ 
+-        if (tile.workerID) {
+-            params.rawTileData = tile.rawTileData;
+-            this.dispatcher.send('reload tile', params, this._tileLoaded.bind(this, tile), tile.workerID);
+-        } else {
+-            tile.workerID = this.dispatcher.send('load tile', params, this._tileLoaded.bind(this, tile));
+-        }
+-    },
++var format = require('util').format;
+ 
+-    _tileLoaded: function(tile, err, data) {
+-        if (tile.aborted)
+-            return;
++function ValidationError(key, value /*, message, ...*/) {
++    this.message = (
++        (key ? key + ': ' : '') +
++        format.apply(format, Array.prototype.slice.call(arguments, 2))
++    );
+ 
+-        if (err) {
+-            tile.errored = true;
+-            this.fire('tile.error', {tile: tile, error: err});
+-            return;
+-        }
++    if (value !== null && value !== undefined && value.__line__) {
++        this.line = value.__line__;
++    }
++}
+ 
+-        tile.loadVectorData(data, this.map.style);
++module.exports = ValidationError;
+ 
+-        if (tile.redoWhenDone) {
+-            tile.redoWhenDone = false;
+-            tile.redoPlacement(this);
+-        }
++},{"util":183}],43:[function(require,module,exports){
++'use strict';
+ 
+-        this.fire('tile.load', {tile: tile});
+-        this.fire('tile.stats', data.bucketStats);
+-    },
+-
+-    _abortTile: function(tile) {
+-        tile.aborted = true;
+-        this.dispatcher.send('abort tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
+-    },
+-
+-    _addTile: function(tile) {
+-        this.fire('tile.add', {tile: tile});
+-    },
+-
+-    _removeTile: function(tile) {
+-        this.fire('tile.remove', {tile: tile});
+-    },
+-
+-    _unloadTile: function(tile) {
+-        tile.unloadVectorData(this.map.painter);
+-        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
+-    },
+-
+-    redoPlacement: Source.redoPlacement,
+-
+-    _redoTilePlacement: function(tile) {
+-        tile.redoPlacement(this);
++module.exports = function (output) {
++    for (var i = 1; i < arguments.length; i++) {
++        var input = arguments[i];
++        for (var k in input) {
++            output[k] = input[k];
++        }
+     }
+-});
++    return output;
++};
+ 
+-},{"../util/evented":111,"../util/mapbox":116,"../util/util":119,"./source":49}],54:[function(require,module,exports){
++},{}],44:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('../util/util');
+-var Tile = require('./tile');
+-var TileCoord = require('./tile_coord');
+-var LngLat = require('../geo/lng_lat');
+-var Point = require('point-geometry');
+-var Evented = require('../util/evented');
+-var ajax = require('../util/ajax');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
+-var Buffer = require('../data/buffer');
+-var VertexArrayObject = require('../render/vertex_array_object');
++module.exports = function getType(val) {
++    if (val instanceof Number) {
++        return 'number';
++    } else if (val instanceof String) {
++        return 'string';
++    } else if (val instanceof Boolean) {
++        return 'boolean';
++    } else if (Array.isArray(val)) {
++        return 'array';
++    } else if (val === null) {
++        return 'null';
++    } else {
++        return typeof val;
++    }
++};
+ 
+-module.exports = VideoSource;
++},{}],45:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Create a Video data source instance given an options object
+- * @class VideoSource
+- * @param {Object} [options]
+- * @param {Array<string>} options.urls An array of URLs to video files
+- * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
+- * @example
+- * var sourceObj = new mapboxgl.VideoSource({
+- *    url: [
+- *        'https://www.mapbox.com/videos/baltimore-smoke.mp4',
+- *        'https://www.mapbox.com/videos/baltimore-smoke.webm'
+- *    ],
+- *    coordinates: [
+- *        [-76.54335737228394, 39.18579907229748],
+- *        [-76.52803659439087, 39.1838364847587],
+- *        [-76.5295386314392, 39.17683392507606],
+- *        [-76.54520273208618, 39.17876344106642]
+- *    ]
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
+- */
+-function VideoSource(options) {
+-    this.urls = options.urls;
+-    this.coordinates = options.coordinates;
++// Turn jsonlint-lines-primitives objects into primitive objects
++module.exports = function unbundle(value) {
++    if (value instanceof Number || value instanceof String || value instanceof Boolean) {
++        return value.valueOf();
++    } else {
++        return value;
++    }
++};
+ 
+-    ajax.getVideo(options.urls, function(err, video) {
+-        // @TODO handle errors via event.
+-        if (err) return;
++},{}],46:[function(require,module,exports){
++'use strict';
+ 
+-        this.video = video;
+-        this.video.loop = true;
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var extend = require('../util/extend');
+ 
+-        var loopID;
++// Main recursive validation function. Tracks:
++//
++// - key: string representing location of validation in style tree. Used only
++//   for more informative error reporting.
++// - value: current value from style being evaluated. May be anything from a
++//   high level object that needs to be descended into deeper or a simple
++//   scalar value.
++// - valueSpec: current spec being evaluated. Tracks value.
+ 
+-        // start repainting when video starts playing
+-        this.video.addEventListener('playing', function() {
+-            loopID = this.map.style.animationLoop.set(Infinity);
+-            this.map._rerender();
+-        }.bind(this));
++module.exports = function validate(options) {
+ 
+-        // stop repainting when video stops
+-        this.video.addEventListener('pause', function() {
+-            this.map.style.animationLoop.cancel(loopID);
+-        }.bind(this));
++    var validateFunction = require('./validate_function');
++    var validateObject = require('./validate_object');
++    var VALIDATORS = {
++        '*': function() {
++            return [];
++        },
++        'array': require('./validate_array'),
++        'boolean': require('./validate_boolean'),
++        'number': require('./validate_number'),
++        'color': require('./validate_color'),
++        'constants': require('./validate_constants'),
++        'enum': require('./validate_enum'),
++        'filter': require('./validate_filter'),
++        'function': require('./validate_function'),
++        'layer': require('./validate_layer'),
++        'object': require('./validate_object'),
++        'source': require('./validate_source'),
++        'string': require('./validate_string')
++    };
+ 
+-        this._loaded = true;
++    var value = options.value;
++    var valueSpec = options.valueSpec;
++    var key = options.key;
++    var styleSpec = options.styleSpec;
++    var style = options.style;
+ 
+-        if (this.map) {
+-            this.video.play();
+-            this.setCoordinates(options.coordinates);
++    if (getType(value) === 'string' && value[0] === '@') {
++        if (styleSpec.$version > 7) {
++            return [new ValidationError(key, value, 'constants have been deprecated as of v8')];
+         }
+-    }.bind(this));
+-}
+-
+-VideoSource.prototype = util.inherit(Evented, /** @lends VideoSource.prototype */{
+-    roundZoom: true,
+-
+-    /**
+-     * Return the HTML video element.
+-     *
+-     * @returns {Object}
+-     */
+-    getVideo: function() {
+-        return this.video;
+-    },
+-
+-    onAdd: function(map) {
+-        this.map = map;
+-        if (this.video) {
+-            this.video.play();
+-            this.setCoordinates(this.coordinates);
++        if (!(value in style.constants)) {
++            return [new ValidationError(key, value, 'constant "%s" not found', value)];
+         }
+-    },
+-
+-    /**
+-     * Update video coordinates and rerender map
+-     *
+-     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
+-     * @returns {VideoSource} this
+-     */
+-    setCoordinates: function(coordinates) {
+-        this.coordinates = coordinates;
+-
+-        // Calculate which mercator tile is suitable for rendering the video in
+-        // and create a buffer with the corner coordinates. These coordinates
+-        // may be outside the tile, because raster tiles aren't clipped when rendering.
+-
+-        var map = this.map;
+-        var cornerZ0Coords = coordinates.map(function(coord) {
+-            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
+-        });
+-
+-        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
+-        centerCoord.column = Math.round(centerCoord.column);
+-        centerCoord.row = Math.round(centerCoord.row);
+-
+-
+-        var tileCoords = cornerZ0Coords.map(function(coord) {
+-            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
+-            return new Point(
+-                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
+-                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
+-        });
+-
+-        var maxInt16 = 32767;
+-        var array = new RasterBoundsArray();
+-        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
+-        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
+-        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
+-        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
++        options = extend({}, options, { value: style.constants[value] });
++    }
+ 
+-        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
+-        this.tile.buckets = {};
++    if (valueSpec.function && getType(value) === 'object') {
++        return validateFunction(options);
+ 
+-        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
+-        this.tile.boundsVAO = new VertexArrayObject();
++    } else if (valueSpec.type && VALIDATORS[valueSpec.type]) {
++        return VALIDATORS[valueSpec.type](options);
+ 
+-        this.fire('change');
++    } else {
++        return validateObject(extend({}, options, {
++            valueSpec: valueSpec.type ? styleSpec[valueSpec.type] : valueSpec
++        }));
++    }
++};
+ 
+-        return this;
+-    },
++},{"../error/validation_error":42,"../util/extend":43,"../util/get_type":44,"./validate_array":47,"./validate_boolean":48,"./validate_color":49,"./validate_constants":50,"./validate_enum":51,"./validate_filter":52,"./validate_function":53,"./validate_layer":55,"./validate_number":57,"./validate_object":58,"./validate_source":60,"./validate_string":61}],47:[function(require,module,exports){
++'use strict';
+ 
+-    loaded: function() {
+-        return this.video && this.video.readyState >= 2;
+-    },
++var getType = require('../util/get_type');
++var validate = require('./validate');
++var ValidationError = require('../error/validation_error');
+ 
+-    update: function() {
+-        // noop
+-    },
++module.exports = function validateArray(options) {
++    var array = options.value;
++    var arraySpec = options.valueSpec;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var key = options.key;
++    var validateArrayElement = options.arrayElementValidator || validate;
+ 
+-    reload: function() {
+-        // noop
+-    },
++    if (getType(array) !== 'array') {
++        return [new ValidationError(key, array, 'array expected, %s found', getType(array))];
++    }
+ 
+-    prepare: function() {
+-        if (!this._loaded) return;
+-        if (this.video.readyState < 2) return; // not enough data for current position
++    if (arraySpec.length && array.length !== arraySpec.length) {
++        return [new ValidationError(key, array, 'array length %d expected, length %d found', arraySpec.length, array.length)];
++    }
+ 
+-        var gl = this.map.painter.gl;
+-        if (!this.tile.texture) {
+-            this.tile.texture = gl.createTexture();
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
+-        } else {
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
+-        }
++    if (arraySpec['min-length'] && array.length < arraySpec['min-length']) {
++        return [new ValidationError(key, array, 'array length at least %d expected, length %d found', arraySpec['min-length'], array.length)];
++    }
+ 
+-        this._currentTime = this.video.currentTime;
+-    },
++    var arrayElementSpec = {
++        "type": arraySpec.value
++    };
+ 
+-    getVisibleCoordinates: function() {
+-        if (this.tile) return [this.tile.coord];
+-        else return [];
+-    },
++    if (styleSpec.$version < 7) {
++        arrayElementSpec.function = arraySpec.function;
++    }
+ 
+-    getTile: function() {
+-        return this.tile;
+-    },
++    if (getType(arraySpec.value) === 'object') {
++        arrayElementSpec = arraySpec.value;
++    }
+ 
+-    serialize: function() {
+-        return {
+-            type: 'video',
+-            urls: this.urls,
+-            coordinates: this.coordinates
+-        };
++    var errors = [];
++    for (var i = 0; i < array.length; i++) {
++        errors = errors.concat(validateArrayElement({
++            array: array,
++            arrayIndex: i,
++            value: array[i],
++            valueSpec: arrayElementSpec,
++            style: style,
++            styleSpec: styleSpec,
++            key: key + '[' + i + ']'
++        }));
+     }
+-});
++    return errors;
++};
+ 
+-},{"../data/bucket":17,"../data/buffer":22,"../geo/lng_lat":26,"../render/draw_raster":37,"../render/vertex_array_object":43,"../util/ajax":104,"../util/evented":111,"../util/util":119,"./tile":50,"./tile_coord":51,"point-geometry":174}],55:[function(require,module,exports){
++},{"../error/validation_error":42,"../util/get_type":44,"./validate":46}],48:[function(require,module,exports){
+ 'use strict';
+ 
+-var Actor = require('../util/actor');
+-var WorkerTile = require('./worker_tile');
+-var StyleLayer = require('../style/style_layer');
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var vt = require('vector-tile');
+-var Protobuf = require('pbf');
+-var supercluster = require('supercluster');
++var getType = require('../util/get_type');
++var ValidationError = require('../error/validation_error');
+ 
+-var geojsonvt = require('geojson-vt');
+-var rewind = require('geojson-rewind');
+-var GeoJSONWrapper = require('./geojson_wrapper');
+-var vtpbf = require('vt-pbf');
++module.exports = function validateBoolean(options) {
++    var value = options.value;
++    var key = options.key;
++    var type = getType(value);
+ 
+-module.exports = function(self) {
+-    return new Worker(self);
++    if (type !== 'boolean') {
++        return [new ValidationError(key, value, 'boolean expected, %s found', type)];
++    }
++
++    return [];
+ };
+ 
+-function Worker(self) {
+-    this.self = self;
+-    this.actor = new Actor(self, this);
+-    this.loading = {};
++},{"../error/validation_error":42,"../util/get_type":44}],49:[function(require,module,exports){
++'use strict';
+ 
+-    this.loaded = {};
+-    this.geoJSONIndexes = {};
+-}
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var parseCSSColor = require('csscolorparser').parseCSSColor;
+ 
+-util.extend(Worker.prototype, {
+-    'set layers': function(layers) {
+-        this.layers = {};
+-        var that = this;
++module.exports = function validateColor(options) {
++    var key = options.key;
++    var value = options.value;
++    var type = getType(value);
+ 
+-        // Filter layers and create an id -> layer map
+-        var childLayerIndicies = [];
+-        for (var i = 0; i < layers.length; i++) {
+-            var layer = layers[i];
+-            if (layer.type === 'fill' || layer.type === 'line' || layer.type === 'circle' || layer.type === 'symbol') {
+-                if (layer.ref) {
+-                    childLayerIndicies.push(i);
+-                } else {
+-                    setLayer(layer);
+-                }
+-            }
+-        }
++    if (type !== 'string') {
++        return [new ValidationError(key, value, 'color expected, %s found', type)];
++    }
+ 
+-        // Create an instance of StyleLayer per layer
+-        for (var j = 0; j < childLayerIndicies.length; j++) {
+-            setLayer(layers[childLayerIndicies[j]]);
+-        }
++    if (parseCSSColor(value) === null) {
++        return [new ValidationError(key, value, 'color expected, "%s" found', value)];
++    }
+ 
+-        function setLayer(serializedLayer) {
+-            var styleLayer = StyleLayer.create(
+-                serializedLayer,
+-                serializedLayer.ref && that.layers[serializedLayer.ref]
+-            );
+-            styleLayer.updatePaintTransitions({}, {transition: false});
+-            that.layers[styleLayer.id] = styleLayer;
+-        }
++    return [];
++};
+ 
+-        this.layerFamilies = createLayerFamilies(this.layers);
+-    },
++},{"../error/validation_error":42,"../util/get_type":44,"csscolorparser":7}],50:[function(require,module,exports){
++'use strict';
+ 
+-    'update layers': function(layers) {
+-        var that = this;
+-        var id;
+-        var layer;
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
+ 
+-        // Update ref parents
+-        for (id in layers) {
+-            layer = layers[id];
+-            if (layer.ref) updateLayer(layer);
+-        }
++module.exports = function validateConstants(options) {
++    var key = options.key;
++    var constants = options.value;
++    var styleSpec = options.styleSpec;
+ 
+-        // Update ref children
+-        for (id in layers) {
+-            layer = layers[id];
+-            if (!layer.ref) updateLayer(layer);
++    if (styleSpec.$version > 7) {
++        if (constants) {
++            return [new ValidationError(key, constants, 'constants have been deprecated as of v8')];
++        } else {
++            return [];
++        }
++    } else {
++        var type = getType(constants);
++        if (type !== 'object') {
++            return [new ValidationError(key, constants, 'object expected, %s found', type)];
+         }
+ 
+-        function updateLayer(layer) {
+-            var refLayer = that.layers[layer.ref];
+-            if (that.layers[layer.id]) {
+-                that.layers[layer.id].set(layer, refLayer);
+-            } else {
+-                that.layers[layer.id] = StyleLayer.create(layer, refLayer);
++        var errors = [];
++        for (var constantName in constants) {
++            if (constantName[0] !== '@') {
++                errors.push(new ValidationError(key + '.' + constantName, constants[constantName], 'constants must start with "@"'));
+             }
+-            that.layers[layer.id].updatePaintTransitions({}, {transition: false});
+         }
++        return errors;
++    }
+ 
+-        this.layerFamilies = createLayerFamilies(this.layers);
+-    },
++};
+ 
+-    'load tile': function(params, callback) {
+-        var source = params.source,
+-            uid = params.uid;
++},{"../error/validation_error":42,"../util/get_type":44}],51:[function(require,module,exports){
++'use strict';
+ 
+-        if (!this.loading[source])
+-            this.loading[source] = {};
++var ValidationError = require('../error/validation_error');
++var unbundle = require('../util/unbundle_jsonlint');
+ 
++module.exports = function validateEnum(options) {
++    var key = options.key;
++    var value = options.value;
++    var valueSpec = options.valueSpec;
++    var errors = [];
+ 
+-        var tile = this.loading[source][uid] = new WorkerTile(params);
++    if (valueSpec.values.indexOf(unbundle(value)) === -1) {
++        errors.push(new ValidationError(key, value, 'expected one of [%s], %s found', valueSpec.values.join(', '), value));
++    }
++    return errors;
++};
+ 
+-        tile.xhr = ajax.getArrayBuffer(params.url, done.bind(this));
++},{"../error/validation_error":42,"../util/unbundle_jsonlint":45}],52:[function(require,module,exports){
++'use strict';
+ 
+-        function done(err, data) {
+-            delete this.loading[source][uid];
++var ValidationError = require('../error/validation_error');
++var validateEnum = require('./validate_enum');
++var getType = require('../util/get_type');
++var unbundle = require('../util/unbundle_jsonlint');
+ 
+-            if (err) return callback(err);
++module.exports = function validateFilter(options) {
++    var value = options.value;
++    var key = options.key;
++    var styleSpec = options.styleSpec;
++    var type;
+ 
+-            tile.data = new vt.VectorTile(new Protobuf(new Uint8Array(data)));
+-            tile.parse(tile.data, this.layerFamilies, this.actor, data, callback);
++    var errors = [];
+ 
+-            this.loaded[source] = this.loaded[source] || {};
+-            this.loaded[source][uid] = tile;
+-        }
+-    },
++    if (getType(value) !== 'array') {
++        return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
++    }
+ 
+-    'reload tile': function(params, callback) {
+-        var loaded = this.loaded[params.source],
+-            uid = params.uid;
+-        if (loaded && loaded[uid]) {
+-            var tile = loaded[uid];
+-            tile.parse(tile.data, this.layerFamilies, this.actor, params.rawTileData, callback);
+-        }
+-    },
++    if (value.length < 1) {
++        return [new ValidationError(key, value, 'filter array must have at least 1 element')];
++    }
+ 
+-    'abort tile': function(params) {
+-        var loading = this.loading[params.source],
+-            uid = params.uid;
+-        if (loading && loading[uid]) {
+-            loading[uid].xhr.abort();
+-            delete loading[uid];
+-        }
+-    },
++    errors = errors.concat(validateEnum({
++        key: key + '[0]',
++        value: value[0],
++        valueSpec: styleSpec.filter_operator,
++        style: options.style,
++        styleSpec: options.styleSpec
++    }));
+ 
+-    'remove tile': function(params) {
+-        var loaded = this.loaded[params.source],
+-            uid = params.uid;
+-        if (loaded && loaded[uid]) {
+-            delete loaded[uid];
+-        }
+-    },
+-
+-    'redo placement': function(params, callback) {
+-        var loaded = this.loaded[params.source],
+-            loading = this.loading[params.source],
+-            uid = params.uid;
+-
+-        if (loaded && loaded[uid]) {
+-            var tile = loaded[uid];
+-            var result = tile.redoPlacement(params.angle, params.pitch, params.showCollisionBoxes);
+-
+-            if (result.result) {
+-                callback(null, result.result, result.transferables);
++    switch (unbundle(value[0])) {
++        case '<':
++        case '<=':
++        case '>':
++        case '>=':
++            if (value.length >= 2 && value[1] == '$type') {
++                errors.push(new ValidationError(key, value, '"$type" cannot be use with operator "%s"', value[0]));
+             }
+-
+-        } else if (loading && loading[uid]) {
+-            loading[uid].angle = params.angle;
+-        }
+-    },
+-
+-    'parse geojson': function(params, callback) {
+-        var indexData = function(err, data) {
+-            rewind(data, true);
+-            if (err) return callback(err);
+-            if (typeof data != 'object') {
+-                return callback(new Error("Input data is not a valid GeoJSON object."));
++        /* falls through */
++        case '==':
++        case '!=':
++            if (value.length != 3) {
++                errors.push(new ValidationError(key, value, 'filter array for operator "%s" must have 3 elements', value[0]));
+             }
+-            try {
+-                this.geoJSONIndexes[params.source] = params.cluster ?
+-                    supercluster(params.superclusterOptions).load(data.features) :
+-                    geojsonvt(data, params.geojsonVtOptions);
+-            } catch (err) {
+-                return callback(err);
++        /* falls through */
++        case 'in':
++        case '!in':
++            if (value.length >= 2) {
++                type = getType(value[1]);
++                if (type !== 'string') {
++                    errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
++                } else if (value[1][0] === '@') {
++                    errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
++                }
+             }
+-            callback(null);
+-        }.bind(this);
++            for (var i = 2; i < value.length; i++) {
++                type = getType(value[i]);
++                if (value[1] == '$type') {
++                    errors = errors.concat(validateEnum({
++                        key: key + '[' + i + ']',
++                        value: value[i],
++                        valueSpec: styleSpec.geometry_type,
++                        style: options.style,
++                        styleSpec: options.styleSpec
++                    }));
++                } else if (type === 'string' && value[i][0] === '@') {
++                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'filter value cannot be a constant'));
++                } else if (type !== 'string' && type !== 'number' && type !== 'boolean') {
++                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'string, number, or boolean expected, %s found', type));
++                }
++            }
++            break;
+ 
+-        // Not, because of same origin issues, urls must either include an
+-        // explicit origin or absolute path.
+-        // ie: /foo/bar.json or http://example.com/bar.json
+-        // but not ../foo/bar.json
+-        if (params.url) {
+-            ajax.getJSON(params.url, indexData);
+-        } else if (typeof params.data === 'string') {
+-            indexData(null, JSON.parse(params.data));
+-        } else {
+-            return callback(new Error("Input data is not a valid GeoJSON object."));
+-        }
+-    },
++        case 'any':
++        case 'all':
++        case 'none':
++            for (i = 1; i < value.length; i++) {
++                errors = errors.concat(validateFilter({
++                    key: key + '[' + i + ']',
++                    value: value[i],
++                    style: options.style,
++                    styleSpec: options.styleSpec
++                }));
++            }
++            break;
+ 
+-    'load geojson tile': function(params, callback) {
+-        var source = params.source,
+-            coord = params.coord;
++        case 'has':
++        case '!has':
++            type = getType(value[1]);
++            if (value.length !== 2) {
++                errors.push(new ValidationError(key, value, 'filter array for "%s" operator must have 2 elements', value[0]));
++            } else if (type !== 'string') {
++                errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
++            } else if (value[1][0] === '@') {
++                errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
++            }
++            break;
+ 
+-        if (!this.geoJSONIndexes[source]) return callback(null, null); // we couldn't load the file
++    }
+ 
+-        // console.time('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
++    return errors;
++};
+ 
+-        var geoJSONTile = this.geoJSONIndexes[source].getTile(Math.min(coord.z, params.maxZoom), coord.x, coord.y);
++},{"../error/validation_error":42,"../util/get_type":44,"../util/unbundle_jsonlint":45,"./validate_enum":51}],53:[function(require,module,exports){
++'use strict';
+ 
+-        // console.timeEnd('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var validate = require('./validate');
++var validateObject = require('./validate_object');
++var validateArray = require('./validate_array');
++var validateNumber = require('./validate_number');
+ 
+-        // if (!geoJSONTile) console.log('not found', this.geoJSONIndexes[source], coord);
++module.exports = function validateFunction(options) {
++    var functionValueSpec = options.valueSpec;
++    var stopKeyType;
+ 
+-        var tile = geoJSONTile ? new WorkerTile(params) : undefined;
++    var isPropertyFunction = options.value.property !== undefined || stopKeyType === 'object';
++    var isZoomFunction = options.value.property === undefined || stopKeyType === 'object';
+ 
+-        this.loaded[source] = this.loaded[source] || {};
+-        this.loaded[source][params.uid] = tile;
++    var errors = validateObject({
++        key: options.key,
++        value: options.value,
++        valueSpec: options.styleSpec.function,
++        style: options.style,
++        styleSpec: options.styleSpec,
++        objectElementValidators: { stops: validateFunctionStops }
++    });
+ 
+-        if (geoJSONTile) {
+-            var geojsonWrapper = new GeoJSONWrapper(geoJSONTile.features);
+-            geojsonWrapper.name = '_geojsonTileLayer';
+-            var rawTileData = vtpbf({ layers: { '_geojsonTileLayer': geojsonWrapper }}).buffer;
+-            tile.parse(geojsonWrapper, this.layerFamilies, this.actor, rawTileData, callback);
+-        } else {
+-            return callback(null, null); // nothing in the given tile
+-        }
++    if (options.styleSpec.$version >= 8) {
++       if (isPropertyFunction && !options.valueSpec['property-function']) {
++           errors.push(new ValidationError(options.key, options.value, 'property functions not supported'));
++       } else if (isZoomFunction && !options.valueSpec['zoom-function']) {
++           errors.push(new ValidationError(options.key, options.value, 'zoom functions not supported'));
++       }
+     }
+-});
+ 
+-function createLayerFamilies(layers) {
+-    var families = {};
++    return errors;
+ 
+-    for (var layerId in layers) {
+-        var layer = layers[layerId];
+-        var parentLayerId = layer.ref || layer.id;
+-        var parentLayer = layers[parentLayerId];
++    function validateFunctionStops(options) {
++        var errors = [];
++        var value = options.value;
+ 
+-        if (parentLayer.layout && parentLayer.layout.visibility === 'none') continue;
++        errors = errors.concat(validateArray({
++            key: options.key,
++            value: value,
++            valueSpec: options.valueSpec,
++            style: options.style,
++            styleSpec: options.styleSpec,
++            arrayElementValidator: validateFunctionStop
++        }));
+ 
+-        families[parentLayerId] = families[parentLayerId] || [];
+-        if (layerId === parentLayerId) {
+-            families[parentLayerId].unshift(layer);
+-        } else {
+-            families[parentLayerId].push(layer);
++        if (getType(value) === 'array' && value.length === 0) {
++            errors.push(new ValidationError(options.key, value, 'array must have at least one stop'));
+         }
++
++        return errors;
+     }
+ 
+-    return families;
+-}
++    function validateFunctionStop(options) {
++        var errors = [];
++        var value = options.value;
++        var key = options.key;
+ 
+-},{"../style/style_layer":63,"../util/actor":103,"../util/ajax":104,"../util/util":119,"./geojson_wrapper":45,"./worker_tile":56,"geojson-rewind":123,"geojson-vt":128,"pbf":172,"supercluster":177,"vector-tile":183,"vt-pbf":187}],56:[function(require,module,exports){
+-'use strict';
++        if (getType(value) !== 'array') {
++            return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
++        }
+ 
+-var FeatureIndex = require('../data/feature_index');
+-var CollisionTile = require('../symbol/collision_tile');
+-var Bucket = require('../data/bucket');
+-var CollisionBoxArray = require('../symbol/collision_box');
+-var DictionaryCoder = require('../util/dictionary_coder');
++        if (value.length !== 2) {
++            return [new ValidationError(key, value, 'array length %d expected, length %d found', 2, value.length)];
++        }
+ 
+-module.exports = WorkerTile;
++        var type = getType(value[0]);
++        if (!stopKeyType) stopKeyType = type;
++        if (type !== stopKeyType) {
++            return [new ValidationError(key, value, '%s stop key type must match previous stop key type %s', type, stopKeyType)];
++        }
+ 
+-function WorkerTile(params) {
+-    this.coord = params.coord;
+-    this.uid = params.uid;
+-    this.zoom = params.zoom;
+-    this.tileSize = params.tileSize;
+-    this.source = params.source;
+-    this.overscaling = params.overscaling;
+-    this.angle = params.angle;
+-    this.pitch = params.pitch;
+-    this.showCollisionBoxes = params.showCollisionBoxes;
+-}
++        if (type === 'object') {
++            if (value[0].zoom === undefined) {
++                return [new ValidationError(key, value, 'object stop key must have zoom')];
++            }
++            if (value[0].value === undefined) {
++                return [new ValidationError(key, value, 'object stop key must have value')];
++            }
++            errors = errors.concat(validateObject({
++                key: key + '[0]',
++                value: value[0],
++                valueSpec: { zoom: {} },
++                style: options.style,
++                styleSpec: options.styleSpec,
++                objectElementValidators: { zoom: validateNumber, value: validateValue }
++            }));
++        } else {
++            errors = errors.concat((isZoomFunction ? validateNumber : validateValue)({
++                key: key + '[0]',
++                value: value[0],
++                valueSpec: {},
++                style: options.style,
++                styleSpec: options.styleSpec
++            }));
++        }
+ 
+-WorkerTile.prototype.parse = function(data, layerFamilies, actor, rawTileData, callback) {
++        errors = errors.concat(validate({
++            key: key + '[1]',
++            value: value[1],
++            valueSpec: functionValueSpec,
++            style: options.style,
++            styleSpec: options.styleSpec
++        }));
+ 
+-    this.status = 'parsing';
+-    this.data = data;
++        if (getType(value[0]) === 'number') {
++            if (functionValueSpec.function === 'piecewise-constant' && value[0] % 1 !== 0) {
++                errors.push(new ValidationError(key + '[0]', value[0], 'zoom level for piecewise-constant functions must be an integer'));
++            }
+ 
+-    this.collisionBoxArray = new CollisionBoxArray();
+-    var collisionTile = new CollisionTile(this.angle, this.pitch, this.collisionBoxArray);
+-    var featureIndex = new FeatureIndex(this.coord, this.overscaling, collisionTile, data.layers);
+-    var sourceLayerCoder = new DictionaryCoder(data.layers ? Object.keys(data.layers).sort() : ['_geojsonTileLayer']);
++            if (options.arrayIndex !== 0) {
++                if (value[0] < options.array[options.arrayIndex - 1][0]) {
++                    errors.push(new ValidationError(key + '[0]', value[0], 'array stops must appear in ascending order'));
++                }
++            }
++        }
+ 
+-    var stats = { _total: 0 };
++        return errors;
++    }
+ 
+-    var tile = this;
+-    var bucketsById = {};
+-    var bucketsBySourceLayer = {};
+-    var i;
+-    var layer;
+-    var sourceLayerId;
+-    var bucket;
++    function validateValue(options) {
++        var errors = [];
++        var type = getType(options.value);
++        if (type !== 'number' && type !== 'string' && type !== 'array') {
++            errors.push(new ValidationError(options.key, options.value, 'property value must be a number, string or array'));
++        }
++        return errors;
++    }
+ 
+-    // Map non-ref layers to buckets.
+-    var bucketIndex = 0;
+-    for (var layerId in layerFamilies) {
+-        layer = layerFamilies[layerId][0];
++};
+ 
+-        if (layer.source !== this.source) continue;
+-        if (layer.ref) continue;
+-        if (layer.minzoom && this.zoom < layer.minzoom) continue;
+-        if (layer.maxzoom && this.zoom >= layer.maxzoom) continue;
+-        if (layer.layout && layer.layout.visibility === 'none') continue;
+-        if (data.layers && !data.layers[layer.sourceLayer]) continue;
++},{"../error/validation_error":42,"../util/get_type":44,"./validate":46,"./validate_array":47,"./validate_number":57,"./validate_object":58}],54:[function(require,module,exports){
++'use strict';
+ 
+-        bucket = Bucket.create({
+-            layer: layer,
+-            index: bucketIndex++,
+-            childLayers: layerFamilies[layerId],
+-            zoom: this.zoom,
+-            overscaling: this.overscaling,
+-            showCollisionBoxes: this.showCollisionBoxes,
+-            collisionBoxArray: this.collisionBoxArray,
+-            sourceLayerIndex: sourceLayerCoder.encode(layer.sourceLayer || '_geojsonTileLayer')
+-        });
+-        bucket.createFilter();
++var ValidationError = require('../error/validation_error');
++var validateString = require('./validate_string');
+ 
+-        bucketsById[layer.id] = bucket;
++module.exports = function(options) {
++    var value = options.value;
++    var key = options.key;
+ 
+-        if (data.layers) { // vectortile
+-            sourceLayerId = layer.sourceLayer;
+-            bucketsBySourceLayer[sourceLayerId] = bucketsBySourceLayer[sourceLayerId] || {};
+-            bucketsBySourceLayer[sourceLayerId][layer.id] = bucket;
+-        }
+-    }
++    var errors = validateString(options);
++    if (errors.length) return errors;
+ 
+-    // read each layer, and sort its features into buckets
+-    if (data.layers) { // vectortile
+-        for (sourceLayerId in bucketsBySourceLayer) {
+-            layer = data.layers[sourceLayerId];
+-            if (layer) {
+-                sortLayerIntoBuckets(layer, bucketsBySourceLayer[sourceLayerId]);
+-            }
+-        }
+-    } else { // geojson
+-        sortLayerIntoBuckets(data, bucketsById);
++    if (value.indexOf('{fontstack}') === -1) {
++        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{fontstack}" token'));
+     }
+ 
+-    function sortLayerIntoBuckets(layer, buckets) {
+-        for (var i = 0; i < layer.length; i++) {
+-            var feature = layer.feature(i);
+-            feature.index = i;
+-            for (var id in buckets) {
+-                if (buckets[id].filter(feature))
+-                    buckets[id].features.push(feature);
+-            }
+-        }
++    if (value.indexOf('{range}') === -1) {
++        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{range}" token'));
+     }
+ 
+-    var buckets = [],
+-        symbolBuckets = this.symbolBuckets = [],
+-        otherBuckets = [];
++    return errors;
++};
+ 
+-    featureIndex.bucketLayerIDs = {};
++},{"../error/validation_error":42,"./validate_string":61}],55:[function(require,module,exports){
++'use strict';
+ 
+-    for (var id in bucketsById) {
+-        bucket = bucketsById[id];
+-        if (bucket.features.length === 0) continue;
++var ValidationError = require('../error/validation_error');
++var unbundle = require('../util/unbundle_jsonlint');
++var validateObject = require('./validate_object');
++var validateFilter = require('./validate_filter');
++var validatePaintProperty = require('./validate_paint_property');
++var validateLayoutProperty = require('./validate_layout_property');
++var extend = require('../util/extend');
+ 
+-        featureIndex.bucketLayerIDs[bucket.index] = bucket.childLayers.map(getLayerId);
++module.exports = function validateLayer(options) {
++    var errors = [];
+ 
+-        buckets.push(bucket);
++    var layer = options.value;
++    var key = options.key;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
+ 
+-        if (bucket.type === 'symbol')
+-            symbolBuckets.push(bucket);
+-        else
+-            otherBuckets.push(bucket);
++    if (!layer.type && !layer.ref) {
++        errors.push(new ValidationError(key, layer, 'either "type" or "ref" is required'));
+     }
++    var type = unbundle(layer.type);
++    var ref = unbundle(layer.ref);
+ 
+-    var icons = {};
+-    var stacks = {};
+-    var deps = 0;
+-
+-
+-    if (symbolBuckets.length > 0) {
+-
+-        // Get dependencies for symbol buckets
+-        for (i = symbolBuckets.length - 1; i >= 0; i--) {
+-            symbolBuckets[i].updateIcons(icons);
+-            symbolBuckets[i].updateFont(stacks);
++    if (layer.id) {
++        for (var i = 0; i < options.arrayIndex; i++) {
++            var otherLayer = style.layers[i];
++            if (unbundle(otherLayer.id) === unbundle(layer.id)) {
++                errors.push(new ValidationError(key, layer.id, 'duplicate layer id "%s", previously used at line %d', layer.id, otherLayer.id.__line__));
++            }
+         }
++    }
+ 
+-        for (var fontName in stacks) {
+-            stacks[fontName] = Object.keys(stacks[fontName]).map(Number);
+-        }
+-        icons = Object.keys(icons);
++    if ('ref' in layer) {
++        ['type', 'source', 'source-layer', 'filter', 'layout'].forEach(function (p) {
++            if (p in layer) {
++                errors.push(new ValidationError(key, layer[p], '"%s" is prohibited for ref layers', p));
++            }
++        });
+ 
+-        actor.send('get glyphs', {uid: this.uid, stacks: stacks}, function(err, newStacks) {
+-            stacks = newStacks;
+-            gotDependency(err);
++        var parent;
++
++        style.layers.forEach(function(layer) {
++            if (layer.id == ref) parent = layer;
+         });
+ 
+-        if (icons.length) {
+-            actor.send('get icons', {icons: icons}, function(err, newIcons) {
+-                icons = newIcons;
+-                gotDependency(err);
+-            });
++        if (!parent) {
++            errors.push(new ValidationError(key, layer.ref, 'ref layer "%s" not found', ref));
++        } else if (parent.ref) {
++            errors.push(new ValidationError(key, layer.ref, 'ref cannot reference another ref layer'));
+         } else {
+-            gotDependency();
++            type = unbundle(parent.type);
++        }
++    } else if (type !== 'background') {
++        if (!layer.source) {
++            errors.push(new ValidationError(key, layer, 'missing required property "source"'));
++        } else {
++            var source = style.sources && style.sources[layer.source];
++            if (!source) {
++                errors.push(new ValidationError(key, layer.source, 'source "%s" not found', layer.source));
++            } else if (source.type == 'vector' && type == 'raster') {
++                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a raster source', layer.id));
++            } else if (source.type == 'raster' && type != 'raster') {
++                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a vector source', layer.id));
++            } else if (source.type == 'vector' && !layer['source-layer']) {
++                errors.push(new ValidationError(key, layer, 'layer "%s" must specify a "source-layer"', layer.id));
++            }
+         }
+     }
+ 
+-    // immediately parse non-symbol buckets (they have no dependencies)
+-    for (i = otherBuckets.length - 1; i >= 0; i--) {
+-        parseBucket(this, otherBuckets[i]);
+-    }
+-
+-    if (symbolBuckets.length === 0)
+-        return done();
+-
+-    function gotDependency(err) {
+-        if (err) return callback(err);
+-        deps++;
+-        if (deps === 2) {
+-            // all symbol bucket dependencies fetched; parse them in proper order
+-            for (var i = symbolBuckets.length - 1; i >= 0; i--) {
+-                parseBucket(tile, symbolBuckets[i]);
++    errors = errors.concat(validateObject({
++        key: key,
++        value: layer,
++        valueSpec: styleSpec.layer,
++        style: options.style,
++        styleSpec: options.styleSpec,
++        objectElementValidators: {
++            filter: validateFilter,
++            layout: function(options) {
++                return validateObject({
++                    layer: layer,
++                    key: options.key,
++                    value: options.value,
++                    style: options.style,
++                    styleSpec: options.styleSpec,
++                    objectElementValidators: {
++                        '*': function(options) {
++                            return validateLayoutProperty(extend({layerType: type}, options));
++                        }
++                    }
++                });
++            },
++            paint: function(options) {
++                return validateObject({
++                    layer: layer,
++                    key: options.key,
++                    value: options.value,
++                    style: options.style,
++                    styleSpec: options.styleSpec,
++                    objectElementValidators: {
++                        '*': function(options) {
++                            return validatePaintProperty(extend({layerType: type}, options));
++                        }
++                    }
++                });
+             }
+-            done();
+         }
+-    }
++    }));
+ 
+-    function parseBucket(tile, bucket) {
+-        var now = Date.now();
+-        bucket.populateBuffers(collisionTile, stacks, icons);
+-        var time = Date.now() - now;
++    return errors;
++};
+ 
++},{"../error/validation_error":42,"../util/extend":43,"../util/unbundle_jsonlint":45,"./validate_filter":52,"./validate_layout_property":56,"./validate_object":58,"./validate_paint_property":59}],56:[function(require,module,exports){
++'use strict';
+ 
+-        if (bucket.type !== 'symbol') {
+-            for (var i = 0; i < bucket.features.length; i++) {
+-                var feature = bucket.features[i];
+-                featureIndex.insert(feature, feature.index, bucket.sourceLayerIndex, bucket.index);
+-            }
+-        }
++var validate = require('./validate');
++var ValidationError = require('../error/validation_error');
+ 
+-        bucket.features = null;
++module.exports = function validateLayoutProperty(options) {
++    var key = options.key;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var value = options.value;
++    var propertyKey = options.objectKey;
++    var layerSpec = styleSpec['layout_' + options.layerType];
+ 
+-        stats._total += time;
+-        stats[bucket.id] = (stats[bucket.id] || 0) + time;
+-    }
++    if (!layerSpec) return [];
+ 
+-    function done() {
+-        tile.status = 'done';
++    if (options.valueSpec || layerSpec[propertyKey]) {
++        var errors = [];
+ 
+-        if (tile.redoPlacementAfterDone) {
+-            tile.redoPlacement(tile.angle, tile.pitch, null);
+-            tile.redoPlacementAfterDone = false;
++        if (options.layerType === 'symbol') {
++            if (propertyKey === 'icon-image' && style && !style.sprite) {
++                errors.push(new ValidationError(key, value, 'use of "icon-image" requires a style "sprite" property'));
++            } else if (propertyKey === 'text-field' && style && !style.glyphs) {
++                errors.push(new ValidationError(key, value, 'use of "text-field" requires a style "glyphs" property'));
++            }
+         }
+ 
+-        var featureIndex_ = featureIndex.serialize();
+-        var collisionTile_ = collisionTile.serialize();
+-        var collisionBoxArray = tile.collisionBoxArray.serialize();
+-        var transferables = [rawTileData].concat(featureIndex_.transferables).concat(collisionTile_.transferables);
+-
+-        var nonEmptyBuckets = buckets.filter(isBucketEmpty);
++        return errors.concat(validate({
++            key: options.key,
++            value: value,
++            valueSpec: options.valueSpec || layerSpec[propertyKey],
++            style: style,
++            styleSpec: styleSpec
++        }));
+ 
+-        callback(null, {
+-            buckets: nonEmptyBuckets.map(serializeBucket),
+-            bucketStats: stats, // TODO put this in a separate message?
+-            featureIndex: featureIndex_.data,
+-            collisionTile: collisionTile_.data,
+-            collisionBoxArray: collisionBoxArray,
+-            rawTileData: rawTileData
+-        }, getTransferables(nonEmptyBuckets).concat(transferables));
++    } else {
++        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
+     }
++
+ };
+ 
+-WorkerTile.prototype.redoPlacement = function(angle, pitch, showCollisionBoxes) {
+-    if (this.status !== 'done') {
+-        this.redoPlacementAfterDone = true;
+-        this.angle = angle;
+-        return {};
+-    }
++},{"../error/validation_error":42,"./validate":46}],57:[function(require,module,exports){
++'use strict';
+ 
+-    var collisionTile = new CollisionTile(angle, pitch, this.collisionBoxArray);
++var getType = require('../util/get_type');
++var ValidationError = require('../error/validation_error');
+ 
+-    var buckets = this.symbolBuckets;
++module.exports = function validateNumber(options) {
++    var key = options.key;
++    var value = options.value;
++    var valueSpec = options.valueSpec;
++    var type = getType(value);
+ 
+-    for (var i = buckets.length - 1; i >= 0; i--) {
+-        buckets[i].placeFeatures(collisionTile, showCollisionBoxes);
++    if (type !== 'number') {
++        return [new ValidationError(key, value, 'number expected, %s found', type)];
+     }
+ 
+-    var collisionTile_ = collisionTile.serialize();
+-
+-    var nonEmptyBuckets = buckets.filter(isBucketEmpty);
+-
+-    return {
+-        result: {
+-            buckets: nonEmptyBuckets.map(serializeBucket),
+-            collisionTile: collisionTile_.data
+-        },
+-        transferables: getTransferables(nonEmptyBuckets).concat(collisionTile_.transferables)
+-    };
+-};
+-
+-function isBucketEmpty(bucket) {
+-    for (var programName in bucket.arrayGroups) {
+-        var programArrayGroups = bucket.arrayGroups[programName];
+-        for (var k = 0; k < programArrayGroups.length; k++) {
+-            var programArrayGroup = programArrayGroups[k];
+-            for (var layoutOrPaint in programArrayGroup) {
+-                var arrays = programArrayGroup[layoutOrPaint];
+-                for (var bufferName in arrays) {
+-                    if (arrays[bufferName].length > 0) return true;
+-                }
+-            }
+-        }
++    if ('minimum' in valueSpec && value < valueSpec.minimum) {
++        return [new ValidationError(key, value, '%s is less than the minimum value %s', value, valueSpec.minimum)];
+     }
+-    return false;
+-}
+-
+-function serializeBucket(bucket) {
+-    return bucket.serialize();
+-}
+ 
+-function getTransferables(buckets) {
+-    var transferables = [];
+-    for (var i in buckets) {
+-        var bucket = buckets[i];
+-        for (var programName in bucket.arrayGroups) {
+-            var programArrayGroups = bucket.arrayGroups[programName];
+-            for (var k = 0; k < programArrayGroups.length; k++) {
+-                var programArrayGroup = programArrayGroups[k];
+-                for (var layoutOrPaint in programArrayGroup) {
+-                    var arrays = programArrayGroup[layoutOrPaint];
+-                    for (var bufferName in arrays) {
+-                        transferables.push(arrays[bufferName].arrayBuffer);
+-                    }
+-                }
+-            }
+-        }
++    if ('maximum' in valueSpec && value > valueSpec.maximum) {
++        return [new ValidationError(key, value, '%s is greater than the maximum value %s', value, valueSpec.maximum)];
+     }
+-    return transferables;
+-}
+-
+-function getLayerId(layer) {
+-    return layer.id;
+-}
+-
+-},{"../data/bucket":17,"../data/feature_index":23,"../symbol/collision_box":76,"../symbol/collision_tile":78,"../util/dictionary_coder":110}],57:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = AnimationLoop;
+-
+-function AnimationLoop() {
+-    this.n = 0;
+-    this.times = [];
+-}
+-
+-// Are all animations done?
+-AnimationLoop.prototype.stopped = function() {
+-    this.times = this.times.filter(function(t) {
+-        return t.time >= (new Date()).getTime();
+-    });
+-    return !this.times.length;
+-};
+-
+-// Add a new animation that will run t milliseconds
+-// Returns an id that can be used to cancel it layer
+-AnimationLoop.prototype.set = function(t) {
+-    this.times.push({ id: this.n, time: t + (new Date()).getTime() });
+-    return this.n++;
+-};
+ 
+-// Cancel an animation
+-AnimationLoop.prototype.cancel = function(n) {
+-    this.times = this.times.filter(function(t) {
+-        return t.id !== n;
+-    });
++    return [];
+ };
+ 
+-},{}],58:[function(require,module,exports){
++},{"../error/validation_error":42,"../util/get_type":44}],58:[function(require,module,exports){
+ 'use strict';
+ 
+-var Evented = require('../util/evented');
+-var ajax = require('../util/ajax');
+-var browser = require('../util/browser');
+-var normalizeURL = require('../util/mapbox').normalizeSpriteURL;
+-
+-module.exports = ImageSprite;
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var validate = require('./validate');
+ 
+-function ImageSprite(base) {
+-    this.base = base;
+-    this.retina = browser.devicePixelRatio > 1;
++module.exports = function validateObject(options) {
++    var key = options.key;
++    var object = options.value;
++    var valueSpec = options.valueSpec;
++    var objectElementValidators = options.objectElementValidators || {};
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var errors = [];
+ 
+-    var format = this.retina ? '@2x' : '';
++    var type = getType(object);
++    if (type !== 'object') {
++        return [new ValidationError(key, object, 'object expected, %s found', type)];
++    }
+ 
+-    ajax.getJSON(normalizeURL(base, format, '.json'), function(err, data) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
+-        }
++    for (var objectKey in object) {
++        var valueSpecKey = objectKey.split('.')[0]; // treat 'paint.*' as 'paint'
++        var objectElementSpec = valueSpec && (valueSpec[valueSpecKey] || valueSpec['*']);
++        var objectElementValidator = objectElementValidators[valueSpecKey] || objectElementValidators['*'];
+ 
+-        this.data = data;
+-        if (this.img) this.fire('load');
+-    }.bind(this));
++        if (objectElementSpec || objectElementValidator) {
++            errors = errors.concat((objectElementValidator || validate)({
++                key: (key ? key + '.' : key) + objectKey,
++                value: object[objectKey],
++                valueSpec: objectElementSpec,
++                style: style,
++                styleSpec: styleSpec,
++                object: object,
++                objectKey: objectKey
++            }));
+ 
+-    ajax.getImage(normalizeURL(base, format, '.png'), function(err, img) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
++        // tolerate root-level extra keys & arbitrary layer properties
++        // TODO remove this layer-specific logic
++        } else if (key !== '' && key.split('.').length !== 1) {
++            errors.push(new ValidationError(key, object[objectKey], 'unknown property "%s"', objectKey));
+         }
++    }
+ 
+-        // premultiply the sprite
+-        var data = img.getData();
+-        var newdata = img.data = new Uint8Array(data.length);
+-        for (var i = 0; i < data.length; i += 4) {
+-            var alpha = data[i + 3] / 255;
+-            newdata[i + 0] = data[i + 0] * alpha;
+-            newdata[i + 1] = data[i + 1] * alpha;
+-            newdata[i + 2] = data[i + 2] * alpha;
+-            newdata[i + 3] = data[i + 3];
++    for (valueSpecKey in valueSpec) {
++        if (valueSpec[valueSpecKey].required && valueSpec[valueSpecKey]['default'] === undefined && object[valueSpecKey] === undefined) {
++            errors.push(new ValidationError(key, object, 'missing required property "%s"', valueSpecKey));
+         }
++    }
+ 
+-        this.img = img;
+-        if (this.data) this.fire('load');
+-    }.bind(this));
+-}
++    return errors;
++};
+ 
+-ImageSprite.prototype = Object.create(Evented);
++},{"../error/validation_error":42,"../util/get_type":44,"./validate":46}],59:[function(require,module,exports){
++'use strict';
+ 
+-ImageSprite.prototype.toJSON = function() {
+-    return this.base;
+-};
++var validate = require('./validate');
++var ValidationError = require('../error/validation_error');
+ 
+-ImageSprite.prototype.loaded = function() {
+-    return !!(this.data && this.img);
+-};
++module.exports = function validatePaintProperty(options) {
++    var key = options.key;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var value = options.value;
++    var propertyKey = options.objectKey;
++    var layerSpec = styleSpec['paint_' + options.layerType];
+ 
+-ImageSprite.prototype.resize = function(/*gl*/) {
+-    if (browser.devicePixelRatio > 1 !== this.retina) {
+-        var newSprite = new ImageSprite(this.base);
+-        newSprite.on('load', function() {
+-            this.img = newSprite.img;
+-            this.data = newSprite.data;
+-            this.retina = newSprite.retina;
+-        }.bind(this));
+-    }
+-};
++    if (!layerSpec) return [];
+ 
+-function SpritePosition() {}
+-SpritePosition.prototype = { x: 0, y: 0, width: 0, height: 0, pixelRatio: 1, sdf: false };
++    var transitionMatch = propertyKey.match(/^(.*)-transition$/);
+ 
+-ImageSprite.prototype.getSpritePosition = function(name) {
+-    if (!this.loaded()) return new SpritePosition();
++    if (transitionMatch && layerSpec[transitionMatch[1]] && layerSpec[transitionMatch[1]].transition) {
++        return validate({
++            key: key,
++            value: value,
++            valueSpec: styleSpec.transition,
++            style: style,
++            styleSpec: styleSpec
++        });
+ 
+-    var pos = this.data && this.data[name];
+-    if (pos && this.img) return pos;
++    } else if (options.valueSpec || layerSpec[propertyKey]) {
++        return validate({
++            key: options.key,
++            value: value,
++            valueSpec: options.valueSpec || layerSpec[propertyKey],
++            style: style,
++            styleSpec: styleSpec
++        });
++
++    } else {
++        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
++    }
+ 
+-    return new SpritePosition();
+ };
+ 
+-},{"../util/ajax":104,"../util/browser":105,"../util/evented":111,"../util/mapbox":116}],59:[function(require,module,exports){
++},{"../error/validation_error":42,"./validate":46}],60:[function(require,module,exports){
+ 'use strict';
+ 
+-var parseCSSColor = require('csscolorparser').parseCSSColor;
+-var util = require('../util/util');
+-
+-var colorCache = {};
++var ValidationError = require('../error/validation_error');
++var unbundle = require('../util/unbundle_jsonlint');
++var validateObject = require('./validate_object');
++var validateEnum = require('./validate_enum');
+ 
+-function parseColor(input) {
++module.exports = function validateSource(options) {
++    var value = options.value;
++    var key = options.key;
++    var styleSpec = options.styleSpec;
++    var style = options.style;
+ 
+-    if (colorCache[input]) {
+-        return colorCache[input];
++    if (!value.type) {
++        return [new ValidationError(key, value, '"type" is required')];
++    }
+ 
+-    // RGBA array
+-    } else if (Array.isArray(input)) {
+-        return input;
++    var type = unbundle(value.type);
++    switch (type) {
++        case 'vector':
++        case 'raster':
++            var errors = [];
++            errors = errors.concat(validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_tile,
++                style: options.style,
++                styleSpec: styleSpec
++            }));
++            if ('url' in value) {
++                for (var prop in value) {
++                    if (['type', 'url', 'tileSize'].indexOf(prop) < 0) {
++                        errors.push(new ValidationError(key + '.' + prop, value[prop], 'a source with a "url" property may not include a "%s" property', prop));
++                    }
++                }
++            }
++            return errors;
+ 
+-    // GL function
+-    } else if (input && input.stops) {
+-        return util.extend({}, input, {
+-            stops: input.stops.map(parseFunctionStopColor)
+-        });
++        case 'geojson':
++            return validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_geojson,
++                style: style,
++                styleSpec: styleSpec
++            });
+ 
+-    // Color string
+-    } else if (typeof input === 'string') {
+-        var parsedColor = parseCSSColor(input);
+-        if (!parsedColor) { throw new Error('Invalid color ' + input); }
++        case 'video':
++            return validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_video,
++                style: style,
++                styleSpec: styleSpec
++            });
+ 
+-        var output = colorDowngrade(parsedColor);
+-        colorCache[input] = output;
+-        return output;
++        case 'image':
++            return validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_image,
++                style: style,
++                styleSpec: styleSpec
++            });
+ 
+-    } else {
+-        throw new Error('Invalid color ' + input);
++        default:
++            return validateEnum({
++                key: key + '.type',
++                value: value.type,
++                valueSpec: {values: ['vector', 'raster', 'geojson', 'video', 'image']},
++                style: style,
++                styleSpec: styleSpec
++            });
+     }
++};
+ 
+-}
+-
+-function parseFunctionStopColor(stop) {
+-    return [stop[0], parseColor(stop[1])];
+-}
+-
+-function colorDowngrade(color) {
+-    return [color[0] / 255, color[1] / 255, color[2] / 255, color[3] / 1];
+-}
+-
+-module.exports = parseColor;
+-
+-},{"../util/util":119,"csscolorparser":121}],60:[function(require,module,exports){
++},{"../error/validation_error":42,"../util/unbundle_jsonlint":45,"./validate_enum":51,"./validate_object":58}],61:[function(require,module,exports){
+ 'use strict';
+ 
+-var Evented = require('../util/evented');
+-var StyleLayer = require('./style_layer');
+-var ImageSprite = require('./image_sprite');
+-var GlyphSource = require('../symbol/glyph_source');
+-var SpriteAtlas = require('../symbol/sprite_atlas');
+-var LineAtlas = require('../render/line_atlas');
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var normalizeURL = require('../util/mapbox').normalizeStyleURL;
+-var browser = require('../util/browser');
+-var Dispatcher = require('../util/dispatcher');
+-var AnimationLoop = require('./animation_loop');
+-var validateStyle = require('./validate_style');
+-var Source = require('../source/source');
+-var styleSpec = require('./style_spec');
+-var StyleFunction = require('./style_function');
+-
+-module.exports = Style;
+-
+-function Style(stylesheet, animationLoop) {
+-    this.animationLoop = animationLoop || new AnimationLoop();
+-    this.dispatcher = new Dispatcher(Math.max(browser.hardwareConcurrency - 1, 1), this);
+-    this.spriteAtlas = new SpriteAtlas(512, 512);
+-    this.lineAtlas = new LineAtlas(256, 512);
++var getType = require('../util/get_type');
++var ValidationError = require('../error/validation_error');
+ 
+-    this._layers = {};
+-    this._order  = [];
+-    this._groups = [];
+-    this.sources = {};
+-    this.zoomHistory = {};
++module.exports = function validateString(options) {
++    var value = options.value;
++    var key = options.key;
++    var type = getType(value);
+ 
+-    util.bindAll([
+-        '_forwardSourceEvent',
+-        '_forwardTileEvent',
+-        '_forwardLayerEvent',
+-        '_redoPlacement'
+-    ], this);
++    if (type !== 'string') {
++        return [new ValidationError(key, value, 'string expected, %s found', type)];
++    }
+ 
+-    this._resetUpdates();
++    return [];
++};
+ 
+-    var loaded = function(err, stylesheet) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
+-        }
++},{"../error/validation_error":42,"../util/get_type":44}],62:[function(require,module,exports){
++'use strict';
+ 
+-        if (validateStyle.emitErrors(this, validateStyle(stylesheet))) return;
++var validateConstants = require('./validate/validate_constants');
++var validate = require('./validate/validate');
++var latestStyleSpec = require('../reference/latest.min');
++var validateGlyphsURL = require('./validate/validate_glyphs_url');
+ 
+-        this._loaded = true;
+-        this.stylesheet = stylesheet;
++/**
++ * Validate a Mapbox GL style against the style specification. This entrypoint,
++ * `mapbox-gl-style-spec/lib/validate_style.min`, is designed to produce as
++ * small a browserify bundle as possible by omitting unnecessary functionality
++ * and legacy style specifications.
++ *
++ * @param {Object} style The style to be validated.
++ * @param {Object} [styleSpec] The style specification to validate against.
++ *     If omitted, the latest style spec is used.
++ * @returns {Array<ValidationError>}
++ * @example
++ *   var validate = require('mapbox-gl-style-spec/lib/validate_style.min');
++ *   var errors = validate(style);
++ */
++function validateStyleMin(style, styleSpec) {
++    styleSpec = styleSpec || latestStyleSpec;
+ 
+-        this.updateClasses();
++    var errors = [];
+ 
+-        var sources = stylesheet.sources;
+-        for (var id in sources) {
+-            this.addSource(id, sources[id]);
++    errors = errors.concat(validate({
++        key: '',
++        value: style,
++        valueSpec: styleSpec.$root,
++        styleSpec: styleSpec,
++        style: style,
++        objectElementValidators: {
++            glyphs: validateGlyphsURL
+         }
++    }));
+ 
+-        if (stylesheet.sprite) {
+-            this.sprite = new ImageSprite(stylesheet.sprite);
+-            this.sprite.on('load', this.fire.bind(this, 'change'));
+-        }
++    if (styleSpec.$version > 7 && style.constants) {
++        errors = errors.concat(validateConstants({
++            key: 'constants',
++            value: style.constants,
++            style: style,
++            styleSpec: styleSpec
++        }));
++    }
+ 
+-        this.glyphSource = new GlyphSource(stylesheet.glyphs);
+-        this._resolve();
+-        this.fire('load');
+-    }.bind(this);
++    return sortErrors(errors);
++}
+ 
+-    if (typeof stylesheet === 'string') {
+-        ajax.getJSON(normalizeURL(stylesheet), loaded);
+-    } else {
+-        browser.frame(loaded.bind(this, null, stylesheet));
+-    }
++validateStyleMin.source = wrapCleanErrors(require('./validate/validate_source'));
++validateStyleMin.layer = wrapCleanErrors(require('./validate/validate_layer'));
++validateStyleMin.filter = wrapCleanErrors(require('./validate/validate_filter'));
++validateStyleMin.paintProperty = wrapCleanErrors(require('./validate/validate_paint_property'));
++validateStyleMin.layoutProperty = wrapCleanErrors(require('./validate/validate_layout_property'));
+ 
+-    this.on('source.load', function(event) {
+-        var source = event.source;
+-        if (source && source.vectorLayerIds) {
+-            for (var layerId in this._layers) {
+-                var layer = this._layers[layerId];
+-                if (layer.source === source.id) {
+-                    this._validateLayer(layer);
+-                }
+-            }
+-        }
++function sortErrors(errors) {
++    return [].concat(errors).sort(function (a, b) {
++        return a.line - b.line;
+     });
+ }
+ 
+-Style.prototype = util.inherit(Evented, {
+-    _loaded: false,
++function wrapCleanErrors(inner) {
++    return function() {
++        return sortErrors(inner.apply(this, arguments));
++    };
++}
+ 
+-    _validateLayer: function(layer) {
+-        var source = this.sources[layer.source];
++module.exports = validateStyleMin;
+ 
+-        if (!layer.sourceLayer) return;
+-        if (!source) return;
+-        if (!source.vectorLayerIds) return;
+-
+-        if (source.vectorLayerIds.indexOf(layer.sourceLayer) === -1) {
+-            this.fire('error', {
+-                error: new Error(
+-                    'Source layer "' + layer.sourceLayer + '" ' +
+-                    'does not exist on source "' + source.id + '" ' +
+-                    'as specified by style layer "' + layer.id + '"'
+-                )
+-            });
+-        }
+-    },
+-
+-    loaded: function() {
+-        if (!this._loaded)
+-            return false;
+-
+-        for (var id in this.sources)
+-            if (!this.sources[id].loaded())
+-                return false;
++},{"../reference/latest.min":64,"./validate/validate":46,"./validate/validate_constants":50,"./validate/validate_filter":52,"./validate/validate_glyphs_url":54,"./validate/validate_layer":55,"./validate/validate_layout_property":56,"./validate/validate_paint_property":59,"./validate/validate_source":60}],63:[function(require,module,exports){
++module.exports = require('./v8.json');
+ 
+-        if (this.sprite && !this.sprite.loaded())
+-            return false;
++},{"./v8.json":65}],64:[function(require,module,exports){
++module.exports = require('./v8.min.json');
+ 
+-        return true;
++},{"./v8.min.json":66}],65:[function(require,module,exports){
++module.exports={
++  "$version": 8,
++  "$root": {
++    "version": {
++      "required": true,
++      "type": "enum",
++      "values": [8],
++      "doc": "Style specification version number. Must be 8.",
++      "example": 8
+     },
+-
+-    _resolve: function() {
+-        var layer, layerJSON;
+-
+-        this._layers = {};
+-        this._order  = this.stylesheet.layers.map(function(layer) {
+-            return layer.id;
+-        });
+-
+-        // resolve all layers WITHOUT a ref
+-        for (var i = 0; i < this.stylesheet.layers.length; i++) {
+-            layerJSON = this.stylesheet.layers[i];
+-            if (layerJSON.ref) continue;
+-            layer = StyleLayer.create(layerJSON);
+-            this._layers[layer.id] = layer;
+-            layer.on('error', this._forwardLayerEvent);
+-        }
+-
+-        // resolve all layers WITH a ref
+-        for (var j = 0; j < this.stylesheet.layers.length; j++) {
+-            layerJSON = this.stylesheet.layers[j];
+-            if (!layerJSON.ref) continue;
+-            var refLayer = this.getLayer(layerJSON.ref);
+-            layer = StyleLayer.create(layerJSON, refLayer);
+-            this._layers[layer.id] = layer;
+-            layer.on('error', this._forwardLayerEvent);
+-        }
+-
+-        this._groupLayers();
+-        this._updateWorkerLayers();
++    "name": {
++      "type": "string",
++      "doc": "A human-readable name for the style.",
++      "example": "Bright"
+     },
+-
+-    _groupLayers: function() {
+-        var group;
+-
+-        this._groups = [];
+-
+-        // Split into groups of consecutive top-level layers with the same source.
+-        for (var i = 0; i < this._order.length; ++i) {
+-            var layer = this._layers[this._order[i]];
+-
+-            if (!group || layer.source !== group.source) {
+-                group = [];
+-                group.source = layer.source;
+-                this._groups.push(group);
+-            }
+-
+-            group.push(layer);
+-        }
++    "metadata": {
++      "type": "*",
++      "doc": "Arbitrary properties useful to track with the stylesheet, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
+     },
+-
+-    _updateWorkerLayers: function(ids) {
+-        this.dispatcher.broadcast(ids ? 'update layers' : 'set layers', this._serializeLayers(ids));
++    "center": {
++      "type": "array",
++      "value": "number",
++      "doc": "Default map center in longitude and latitude.  The style center will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": [-73.9749, 40.7736]
+     },
+-
+-    _serializeLayers: function(ids) {
+-        ids = ids || this._order;
+-        var serialized = [];
+-        var options = {includeRefProperties: true};
+-        for (var i = 0; i < ids.length; i++) {
+-            serialized.push(this._layers[ids[i]].serialize(options));
+-        }
+-        return serialized;
++    "zoom": {
++      "type": "number",
++      "doc": "Default zoom level.  The style zoom will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": 12.5
+     },
+-
+-    _applyClasses: function(classes, options) {
+-        if (!this._loaded) return;
+-
+-        classes = classes || [];
+-        options = options || {transition: true};
+-        var transition = this.stylesheet.transition || {};
+-
+-        var layers = this._updates.allPaintProps ? this._layers : this._updates.paintProps;
+-
+-        for (var id in layers) {
+-            var layer = this._layers[id];
+-            var props = this._updates.paintProps[id];
+-
+-            if (this._updates.allPaintProps || props.all) {
+-                layer.updatePaintTransitions(classes, options, transition, this.animationLoop);
+-            } else {
+-                for (var paintName in props) {
+-                    this._layers[id].updatePaintTransition(paintName, classes, options, transition, this.animationLoop);
+-                }
+-            }
+-        }
++    "bearing": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "units": "degrees",
++      "doc": "Default bearing, in degrees clockwise from true north.  The style bearing will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": 29
+     },
+-
+-    _recalculate: function(z) {
+-        for (var sourceId in this.sources)
+-            this.sources[sourceId].used = false;
+-
+-        this._updateZoomHistory(z);
+-
+-        this.rasterFadeDuration = 300;
+-        for (var layerId in this._layers) {
+-            var layer = this._layers[layerId];
+-
+-            layer.recalculate(z, this.zoomHistory);
+-            if (!layer.isHidden(z) && layer.source) {
+-                this.sources[layer.source].used = true;
+-            }
+-        }
+-
+-        var maxZoomTransitionDuration = 300;
+-        if (Math.floor(this.z) !== Math.floor(z)) {
+-            this.animationLoop.set(maxZoomTransitionDuration);
+-        }
+-
+-        this.z = z;
+-        this.fire('zoom');
++    "pitch": {
++      "type": "number",
++      "default": 0,
++      "units": "degrees",
++      "doc": "Default pitch, in degrees. Zero is perpendicular to the surface, for a look straight down at the map, while a greater value like 60 looks ahead towards the horizon. The style pitch will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": 50
+     },
+-
+-    _updateZoomHistory: function(z) {
+-
+-        var zh = this.zoomHistory;
+-
+-        if (zh.lastIntegerZoom === undefined) {
+-            // first time
+-            zh.lastIntegerZoom = Math.floor(z);
+-            zh.lastIntegerZoomTime = 0;
+-            zh.lastZoom = z;
+-        }
+-
+-        // check whether an integer zoom level as passed since the last frame
+-        // and if yes, record it with the time. Used for transitioning patterns.
+-        if (Math.floor(zh.lastZoom) < Math.floor(z)) {
+-            zh.lastIntegerZoom = Math.floor(z);
+-            zh.lastIntegerZoomTime = Date.now();
+-
+-        } else if (Math.floor(zh.lastZoom) > Math.floor(z)) {
+-            zh.lastIntegerZoom = Math.floor(z + 1);
+-            zh.lastIntegerZoomTime = Date.now();
++    "sources": {
++      "required": true,
++      "type": "sources",
++      "doc": "Data source specifications.",
++      "example": {
++        "mapbox-streets": {
++          "type": "vector",
++          "url": "mapbox://mapbox.mapbox-streets-v6"
+         }
+-
+-        zh.lastZoom = z;
++      }
+     },
+-
+-    _checkLoaded: function () {
+-        if (!this._loaded) {
+-            throw new Error('Style is not done loading');
+-        }
++    "sprite": {
++      "type": "string",
++      "doc": "A base URL for retrieving the sprite image and metadata. The extensions `.png`, `.json` and scale factor `@2x.png` will be automatically appended. This property is required if any layer uses the 'sprite-image' layout property.",
++      "example": "mapbox://sprites/mapbox/bright-v8"
+     },
+-
+-    /**
+-     * Apply queued style updates in a batch
+-     * @private
+-     */
+-    update: function(classes, options) {
+-        if (!this._updates.changed) return this;
+-
+-        if (this._updates.allLayers) {
+-            this._groupLayers();
+-            this._updateWorkerLayers();
+-        } else {
+-            var updatedIds = Object.keys(this._updates.layers);
+-            if (updatedIds.length) {
+-                this._updateWorkerLayers(updatedIds);
+-            }
+-        }
+-
+-        var updatedSourceIds = Object.keys(this._updates.sources);
+-        var i;
+-        for (i = 0; i < updatedSourceIds.length; i++) {
+-            this._reloadSource(updatedSourceIds[i]);
+-        }
+-
+-        for (i = 0; i < this._updates.events.length; i++) {
+-            var args = this._updates.events[i];
+-            this.fire(args[0], args[1]);
+-        }
+-
+-        this._applyClasses(classes, options);
+-
+-        if (this._updates.changed) {
+-            this.fire('change');
+-        }
+-
+-        this._resetUpdates();
+-
+-        return this;
++    "glyphs": {
++      "type": "string",
++      "doc": "A URL template for loading signed-distance-field glyph sets in PBF format. The URL must include `{fontstack}` and `{range}` tokens. This property is required if any layer uses the 'text-field' layout property.",
++      "example": "mapbox://fonts/mapbox/{fontstack}/{range}.pbf"
+     },
+-
+-    _resetUpdates: function() {
+-        this._updates = {
+-            events: [],
+-            layers: {},
+-            sources: {},
+-            paintProps: {}
+-        };
++    "transition": {
++      "type": "transition",
++      "doc": "A global transition definition to use as a default across properties.",
++      "example": {
++        "duration": 300,
++        "delay": 0
++      }
+     },
+-
+-    addSource: function(id, source) {
+-        this._checkLoaded();
+-        if (this.sources[id] !== undefined) {
+-            throw new Error('There is already a source with this ID');
++    "layers": {
++      "required": true,
++      "type": "array",
++      "value": "layer",
++      "doc": "Layers will be drawn in the order of this array.",
++      "example": [
++        {
++          "id": "water",
++          "source": "mapbox-streets",
++          "source-layer": "water",
++          "type": "fill",
++          "paint": {
++            "fill-color": "#00ffff"
++          }
+         }
+-        if (!Source.is(source) && this._handleErrors(validateStyle.source, 'sources.' + id, source)) return this;
+-
+-        source = Source.create(source);
+-        this.sources[id] = source;
+-        source.id = id;
+-        source.style = this;
+-        source.dispatcher = this.dispatcher;
+-        source
+-            .on('load', this._forwardSourceEvent)
+-            .on('error', this._forwardSourceEvent)
+-            .on('change', this._forwardSourceEvent)
+-            .on('tile.add', this._forwardTileEvent)
+-            .on('tile.load', this._forwardTileEvent)
+-            .on('tile.error', this._forwardTileEvent)
+-            .on('tile.remove', this._forwardTileEvent)
+-            .on('tile.stats', this._forwardTileEvent);
+-
+-        this._updates.events.push(['source.add', {source: source}]);
+-        this._updates.changed = true;
+-
+-        return this;
++      ]
++    }
++  },
++  "sources": {
++    "*": {
++      "type": "source",
++      "doc": "Specification of a data source. For vector and raster sources, either TileJSON or a URL to a TileJSON must be provided. For GeoJSON and video sources, a URL must be provided."
++    }
++  },
++  "source": [
++    "source_tile",
++    "source_geojson",
++    "source_video",
++    "source_image"
++  ],
++  "source_tile": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "vector",
++        "raster"
++      ],
++      "doc": "The data type of the tile source."
+     },
+-
+-    /**
+-     * Remove a source from this stylesheet, given its id.
+-     * @param {string} id id of the source to remove
+-     * @returns {Style} this style
+-     * @throws {Error} if no source is found with the given ID
+-     * @private
+-     */
+-    removeSource: function(id) {
+-        this._checkLoaded();
+-
+-        if (this.sources[id] === undefined) {
+-            throw new Error('There is no source with this ID');
+-        }
+-        var source = this.sources[id];
+-        delete this.sources[id];
+-        source
+-            .off('load', this._forwardSourceEvent)
+-            .off('error', this._forwardSourceEvent)
+-            .off('change', this._forwardSourceEvent)
+-            .off('tile.add', this._forwardTileEvent)
+-            .off('tile.load', this._forwardTileEvent)
+-            .off('tile.error', this._forwardTileEvent)
+-            .off('tile.remove', this._forwardTileEvent)
+-            .off('tile.stats', this._forwardTileEvent);
+-
+-        this._updates.events.push(['source.remove', {source: source}]);
+-        this._updates.changed = true;
+-
+-        return this;
++    "url": {
++      "type": "string",
++      "doc": "A URL to a TileJSON resource. Supported protocols are `http:`, `https:`, and `mapbox://<mapid>`."
+     },
+-
+-    /**
+-     * Get a source by id.
+-     * @param {string} id id of the desired source
+-     * @returns {Object} source
+-     * @private
+-     */
+-    getSource: function(id) {
+-        return this.sources[id];
++    "tiles": {
++      "type": "array",
++      "value": "string",
++      "doc": "An array of one or more tile source URLs, as in the TileJSON spec."
+     },
+-
+-    /**
+-     * Add a layer to the map style. The layer will be inserted before the layer with
+-     * ID `before`, or appended if `before` is omitted.
+-     * @param {StyleLayer|Object} layer
+-     * @param {string=} before  ID of an existing layer to insert before
+-     * @fires layer.add
+-     * @returns {Style} `this`
+-     * @private
+-     */
+-    addLayer: function(layer, before) {
+-        this._checkLoaded();
+-
+-        if (!(layer instanceof StyleLayer)) {
+-            // this layer is not in the style.layers array, so we pass an impossible array index
+-            if (this._handleErrors(validateStyle.layer,
+-                    'layers.' + layer.id, layer, false, {arrayIndex: -1})) return this;
+-
+-            var refLayer = layer.ref && this.getLayer(layer.ref);
+-            layer = StyleLayer.create(layer, refLayer);
+-        }
+-        this._validateLayer(layer);
+-
+-        layer.on('error', this._forwardLayerEvent);
+-
+-        this._layers[layer.id] = layer;
+-        this._order.splice(before ? this._order.indexOf(before) : Infinity, 0, layer.id);
+-
+-        this._updates.allLayers = true;
+-        if (layer.source) {
+-            this._updates.sources[layer.source] = true;
+-        }
+-        this._updates.events.push(['layer.add', {layer: layer}]);
+-
+-        return this.updateClasses(layer.id);
++    "minzoom": {
++      "type": "number",
++      "default": 0,
++      "doc": "Minimum zoom level for which tiles are available, as in the TileJSON spec."
+     },
+-
+-    /**
+-     * Remove a layer from this stylesheet, given its id.
+-     * @param {string} id id of the layer to remove
+-     * @returns {Style} this style
+-     * @throws {Error} if no layer is found with the given ID
+-     * @private
+-     */
+-    removeLayer: function(id) {
+-        this._checkLoaded();
+-
+-        var layer = this._layers[id];
+-        if (layer === undefined) {
+-            throw new Error('There is no layer with this ID');
+-        }
+-        for (var i in this._layers) {
+-            if (this._layers[i].ref === id) {
+-                this.removeLayer(i);
+-            }
+-        }
+-
+-        layer.off('error', this._forwardLayerEvent);
+-
+-        delete this._layers[id];
+-        this._order.splice(this._order.indexOf(id), 1);
+-
+-        this._updates.allLayers = true;
+-        this._updates.events.push(['layer.remove', {layer: layer}]);
+-        this._updates.changed = true;
+-
+-        return this;
++    "maxzoom": {
++      "type": "number",
++      "default": 22,
++      "doc": "Maximum zoom level for which tiles are available, as in the TileJSON spec. Data from tiles at the maxzoom are used when displaying the map at higher zoom levels."
+     },
+-
+-    /**
+-     * Return the style layer object with the given `id`.
+-     *
+-     * @param {string} id - id of the desired layer
+-     * @returns {?Object} a layer, if one with the given `id` exists
+-     * @private
+-     */
+-    getLayer: function(id) {
+-        return this._layers[id];
++    "tileSize": {
++      "type": "number",
++      "default": 512,
++      "units": "pixels",
++      "doc": "The minimum visual size to display tiles for this layer. Only configurable for raster layers."
+     },
+-
+-    /**
+-     * If a layer has a `ref` property that makes it derive some values
+-     * from another layer, return that referent layer. Otherwise,
+-     * returns the layer itself.
+-     * @param {string} id the layer's id
+-     * @returns {Layer} the referent layer or the layer itself
+-     * @private
+-     */
+-    getReferentLayer: function(id) {
+-        var layer = this.getLayer(id);
+-        if (layer.ref) {
+-            layer = this.getLayer(layer.ref);
+-        }
+-        return layer;
++    "*": {
++      "type": "*",
++      "doc": "Other keys to configure the data source."
++    }
++  },
++  "source_geojson": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "geojson"
++      ],
++      "doc": "The data type of the GeoJSON source."
+     },
+-
+-    setLayerZoomRange: function(layerId, minzoom, maxzoom) {
+-        this._checkLoaded();
+-
+-        var layer = this.getReferentLayer(layerId);
+-
+-        if (layer.minzoom === minzoom && layer.maxzoom === maxzoom) return this;
+-
+-        if (minzoom != null) {
+-            layer.minzoom = minzoom;
+-        }
+-        if (maxzoom != null) {
+-            layer.maxzoom = maxzoom;
+-        }
+-        return this._updateLayer(layer);
++    "data": {
++      "type": "*",
++      "doc": "A URL to a GeoJSON file, or inline GeoJSON."
+     },
+-
+-    setFilter: function(layerId, filter) {
+-        this._checkLoaded();
+-
+-        var layer = this.getReferentLayer(layerId);
+-
+-        if (this._handleErrors(validateStyle.filter, 'layers.' + layer.id + '.filter', filter)) return this;
+-
+-        if (util.deepEqual(layer.filter, filter)) return this;
+-        layer.filter = util.clone(filter);
+-
+-        return this._updateLayer(layer);
++    "maxzoom": {
++      "type": "number",
++      "default": 18,
++      "doc": "Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels)."
+     },
+-
+-    /**
+-     * Get a layer's filter object
+-     * @param {string} layer the layer to inspect
+-     * @returns {*} the layer's filter, if any
+-     * @private
+-     */
+-    getFilter: function(layer) {
+-        return this.getReferentLayer(layer).filter;
++    "buffer": {
++      "type": "number",
++      "default": 128,
++      "doc": "Tile buffer size on each side (measured in 1/512ths of a tile; higher means fewer rendering artifacts near tile edges but slower performance)."
+     },
+-
+-    setLayoutProperty: function(layerId, name, value) {
+-        this._checkLoaded();
+-
+-        var layer = this.getReferentLayer(layerId);
+-
+-        if (util.deepEqual(layer.getLayoutProperty(name), value)) return this;
+-
+-        layer.setLayoutProperty(name, value);
+-        return this._updateLayer(layer);
++    "tolerance": {
++      "type": "number",
++      "default": 0.375,
++      "doc": "Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance)."
+     },
+-
+-    /**
+-     * Get a layout property's value from a given layer
+-     * @param {string} layer the layer to inspect
+-     * @param {string} name the name of the layout property
+-     * @returns {*} the property value
+-     * @private
+-     */
+-    getLayoutProperty: function(layer, name) {
+-        return this.getReferentLayer(layer).getLayoutProperty(name);
++    "cluster": {
++      "type": "boolean",
++      "default": false,
++      "doc": "If the data is a collection of point features, setting this to true clusters the points by radius into groups."
+     },
+-
+-    setPaintProperty: function(layerId, name, value, klass) {
+-        this._checkLoaded();
+-
+-        var layer = this.getLayer(layerId);
+-
+-        if (util.deepEqual(layer.getPaintProperty(name, klass), value)) return this;
+-
+-        var wasFeatureConstant = layer.isPaintValueFeatureConstant(name);
+-        layer.setPaintProperty(name, value, klass);
+-
+-        var isFeatureConstant = !(StyleFunction.isFunctionDefinition(value) && value.property !== '$zoom' && value.property !== undefined);
+-
+-        if (!isFeatureConstant || !wasFeatureConstant) {
+-            this._updates.layers[layerId] = true;
+-            if (layer.source) {
+-                this._updates.sources[layer.source] = true;
+-            }
+-        }
+-
+-        return this.updateClasses(layerId, name);
++    "clusterRadius": {
++      "type": "number",
++      "default": 50,
++      "doc": "Radius of each cluster when clustering points, measured in 1/512ths of a tile."
+     },
+-
+-    getPaintProperty: function(layer, name, klass) {
+-        return this.getLayer(layer).getPaintProperty(name, klass);
++    "clusterMaxZoom": {
++      "type": "number",
++      "doc": "Max zoom to cluster points on. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered)."
++    }
++  },
++  "source_video": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "video"
++      ],
++      "doc": "The data type of the video source."
+     },
+-
+-    updateClasses: function (layerId, paintName) {
+-        this._updates.changed = true;
+-        if (!layerId) {
+-            this._updates.allPaintProps = true;
+-        } else {
+-            var props = this._updates.paintProps;
+-            if (!props[layerId]) props[layerId] = {};
+-            props[layerId][paintName || 'all'] = true;
+-        }
+-        return this;
++    "urls": {
++      "required": true,
++      "type": "array",
++      "value": "string",
++      "doc": "URLs to video content in order of preferred format."
+     },
+-
+-    serialize: function() {
+-        return util.filterObject({
+-            version: this.stylesheet.version,
+-            name: this.stylesheet.name,
+-            metadata: this.stylesheet.metadata,
+-            center: this.stylesheet.center,
+-            zoom: this.stylesheet.zoom,
+-            bearing: this.stylesheet.bearing,
+-            pitch: this.stylesheet.pitch,
+-            sprite: this.stylesheet.sprite,
+-            glyphs: this.stylesheet.glyphs,
+-            transition: this.stylesheet.transition,
+-            sources: util.mapObject(this.sources, function(source) {
+-                return source.serialize();
+-            }),
+-            layers: this._order.map(function(id) {
+-                return this._layers[id].serialize();
+-            }, this)
+-        }, function(value) { return value !== undefined; });
++    "coordinates": {
++      "required": true,
++      "doc": "Corners of video specified in longitude, latitude pairs.",
++      "type": "array",
++      "length": 4,
++      "value": {
++        "type": "array",
++        "length": 2,
++        "value": "number",
++        "doc": "A single longitude, latitude pair."
++      }
++    }
++  },
++  "source_image": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "image"
++      ],
++      "doc": "The data type of the image source."
+     },
+-
+-    _updateLayer: function (layer) {
+-        this._updates.layers[layer.id] = true;
+-        if (layer.source) {
+-            this._updates.sources[layer.source] = true;
+-        }
+-        this._updates.changed = true;
+-        return this;
++    "url": {
++      "required": true,
++      "type": "string",
++      "doc": "URL that points to an image"
+     },
+-
+-    _flattenRenderedFeatures: function(sourceResults) {
+-        var features = [];
+-        for (var l = this._order.length - 1; l >= 0; l--) {
+-            var layerID = this._order[l];
+-            for (var s = 0; s < sourceResults.length; s++) {
+-                var layerFeatures = sourceResults[s][layerID];
+-                if (layerFeatures) {
+-                    for (var f = 0; f < layerFeatures.length; f++) {
+-                        features.push(layerFeatures[f]);
+-                    }
+-                }
+-            }
+-        }
+-        return features;
++    "coordinates": {
++      "required": true,
++      "doc": "Corners of image specified in longitude, latitude pairs.",
++      "type": "array",
++      "length": 4,
++      "value": {
++        "type": "array",
++        "length": 2,
++        "value": "number",
++        "doc": "A single longitude, latitude pair."
++      }
++    }
++  },
++  "layer": {
++    "id": {
++      "type": "string",
++      "doc": "Unique layer name.",
++      "required": true
+     },
+-
+-    queryRenderedFeatures: function(queryGeometry, params, zoom, bearing) {
+-        if (params && params.filter) {
+-            this._handleErrors(validateStyle.filter, 'queryRenderedFeatures.filter', params.filter, true);
+-        }
+-
+-        var sourceResults = [];
+-        for (var id in this.sources) {
+-            var source = this.sources[id];
+-            if (source.queryRenderedFeatures) {
+-                sourceResults.push(source.queryRenderedFeatures(queryGeometry, params, zoom, bearing));
+-            }
+-        }
+-        return this._flattenRenderedFeatures(sourceResults);
++    "type": {
++      "type": "enum",
++      "values": [
++        "fill",
++        "line",
++        "symbol",
++        "circle",
++        "raster",
++        "background"
++      ],
++      "doc": "Rendering type of this layer."
+     },
+-
+-    querySourceFeatures: function(sourceID, params) {
+-        if (params && params.filter) {
+-            this._handleErrors(validateStyle.filter, 'querySourceFeatures.filter', params.filter, true);
+-        }
+-        var source = this.getSource(sourceID);
+-        return source && source.querySourceFeatures ? source.querySourceFeatures(params) : [];
++    "metadata": {
++      "type": "*",
++      "doc": "Arbitrary properties useful to track with the layer, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
+     },
+-
+-    _handleErrors: function(validate, key, value, throws, props) {
+-        var action = throws ? validateStyle.throwErrors : validateStyle.emitErrors;
+-        var result = validate.call(validateStyle, util.extend({
+-            key: key,
+-            style: this.serialize(),
+-            value: value,
+-            styleSpec: styleSpec
+-        }, props));
+-        return action.call(validateStyle, this, result);
++    "ref": {
++      "type": "string",
++      "doc": "References another layer to copy `type`, `source`, `source-layer`, `minzoom`, `maxzoom`, `filter`, and `layout` properties from. This allows the layers to share processing and be more efficient."
+     },
+-
+-    _remove: function() {
+-        this.dispatcher.remove();
++    "source": {
++      "type": "string",
++      "doc": "Name of a source description to be used for this layer."
+     },
+-
+-    _reloadSource: function(id) {
+-        this.sources[id].reload();
++    "source-layer": {
++      "type": "string",
++      "doc": "Layer to use from a vector tile source. Required if the source supports multiple layers."
+     },
+-
+-    _updateSources: function(transform) {
+-        for (var id in this.sources) {
+-            this.sources[id].update(transform);
+-        }
++    "minzoom": {
++      "type": "number",
++      "minimum": 0,
++      "maximum": 22,
++      "doc": "The minimum zoom level on which the layer gets parsed and appears on."
+     },
+-
+-    _redoPlacement: function() {
+-        for (var id in this.sources) {
+-            if (this.sources[id].redoPlacement) this.sources[id].redoPlacement();
+-        }
++    "maxzoom": {
++      "type": "number",
++      "minimum": 0,
++      "maximum": 22,
++      "doc": "The maximum zoom level on which the layer gets parsed and appears on."
+     },
+-
+-    _forwardSourceEvent: function(e) {
+-        this.fire('source.' + e.type, util.extend({source: e.target}, e));
++    "interactive": {
++      "type": "boolean",
++      "doc": "Enable querying of feature data from this layer for interactivity.",
++      "default": false
+     },
+-
+-    _forwardTileEvent: function(e) {
+-        this.fire(e.type, util.extend({source: e.target}, e));
++    "filter": {
++      "type": "filter",
++      "doc": "A expression specifying conditions on source features. Only features that match the filter are displayed."
+     },
+-
+-    _forwardLayerEvent: function(e) {
+-        this.fire('layer.' + e.type, util.extend({layer: {id: e.target.id}}, e));
++    "layout": {
++      "type": "layout",
++      "doc": "Layout properties for the layer."
+     },
+-
+-    // Callbacks from web workers
+-
+-    'get sprite json': function(params, callback) {
+-        var sprite = this.sprite;
+-        if (sprite.loaded()) {
+-            callback(null, { sprite: sprite.data, retina: sprite.retina });
+-        } else {
+-            sprite.on('load', function() {
+-                callback(null, { sprite: sprite.data, retina: sprite.retina });
+-            });
++    "paint": {
++      "type": "paint",
++      "doc": "Default paint properties for this layer."
++    },
++    "paint.*": {
++      "type": "paint",
++      "doc": "Class-specific paint properties for this layer. The class name is the part after the first dot."
++    }
++  },
++  "layout": [
++    "layout_fill",
++    "layout_line",
++    "layout_circle",
++    "layout_symbol",
++    "layout_raster",
++    "layout_background"
++  ],
++  "layout_background": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "layout_fill": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "layout_circle": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "layout_line": {
++    "line-cap": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "butt",
++        "round",
++        "square"
++      ],
++      "default": "butt",
++      "doc": "The display of line endings.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    'get icons': function(params, callback) {
+-        var sprite = this.sprite;
+-        var spriteAtlas = this.spriteAtlas;
+-        if (sprite.loaded()) {
+-            spriteAtlas.setSprite(sprite);
+-            spriteAtlas.addIcons(params.icons, callback);
+-        } else {
+-            sprite.on('load', function() {
+-                spriteAtlas.setSprite(sprite);
+-                spriteAtlas.addIcons(params.icons, callback);
+-            });
++    "line-join": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "bevel",
++        "round",
++        "miter"
++      ],
++      "default": "miter",
++      "doc": "The display of lines when joining.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    'get glyphs': function(params, callback) {
+-        var stacks = params.stacks,
+-            remaining = Object.keys(stacks).length,
+-            allGlyphs = {};
+-
+-        for (var fontName in stacks) {
+-            this.glyphSource.getSimpleGlyphs(fontName, stacks[fontName], params.uid, done);
++    "line-miter-limit": {
++      "type": "number",
++      "default": 2,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Used to automatically convert miter joins to bevel joins for sharp angles.",
++      "requires": [
++        {
++          "line-join": "miter"
+         }
+-
+-        function done(err, glyphs, fontName) {
+-            if (err) console.error(err);
+-
+-            allGlyphs[fontName] = glyphs;
+-            remaining--;
+-
+-            if (remaining === 0)
+-                callback(null, allGlyphs);
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-    }
+-});
+-
+-},{"../render/line_atlas":40,"../source/source":49,"../symbol/glyph_source":81,"../symbol/sprite_atlas":86,"../util/ajax":104,"../util/browser":105,"../util/dispatcher":107,"../util/evented":111,"../util/mapbox":116,"../util/util":119,"./animation_loop":57,"./image_sprite":58,"./style_function":62,"./style_layer":63,"./style_spec":70,"./validate_style":72}],61:[function(require,module,exports){
+-'use strict';
+-
+-var MapboxGLFunction = require('./style_function');
+-var parseColor = require('./parse_color');
+-var util = require('../util/util');
+-
+-module.exports = StyleDeclaration;
+-
+-function StyleDeclaration(reference, value) {
+-    this.type = reference.type;
+-    this.transitionable = reference.transition;
+-    this.value = util.clone(value);
+-    this.isFunction = !!value.stops;
+-
+-    // immutable representation of value. used for comparison
+-    this.json = JSON.stringify(this.value);
+-
+-    var parsedValue = this.type === 'color' ? parseColor(this.value) : value;
+-    this.calculate = MapboxGLFunction[reference.function || 'piecewise-constant'](parsedValue);
+-    this.isFeatureConstant = this.calculate.isFeatureConstant;
+-    this.isZoomConstant = this.calculate.isZoomConstant;
+-
+-    if (reference.function === 'piecewise-constant' && reference.transition) {
+-        this.calculate = transitioned(this.calculate);
+-    }
+-
+-    if (!this.isFeatureConstant && !this.isZoomConstant) {
+-        this.stopZoomLevels = [];
+-        var interpolationAmountStops = [];
+-        var stops = this.value.stops;
+-        for (var i = 0; i < this.value.stops.length; i++) {
+-            var zoom = stops[i][0].zoom;
+-            if (this.stopZoomLevels.indexOf(zoom) < 0) {
+-                this.stopZoomLevels.push(zoom);
+-                interpolationAmountStops.push([zoom, interpolationAmountStops.length]);
+-            }
++      }
++    },
++    "line-round-limit": {
++      "type": "number",
++      "default": 1.05,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Used to automatically convert round joins to miter joins for shallow angles.",
++      "requires": [
++        {
++          "line-join": "round"
+         }
+-
+-        this.calculateInterpolationT = MapboxGLFunction.interpolated({
+-            stops: interpolationAmountStops,
+-            base: value.base
+-        });
+-    }
+-}
+-
+-function transitioned(calculate) {
+-    return function(globalProperties, featureProperties) {
+-        var z = globalProperties.zoom;
+-        var zh = globalProperties.zoomHistory;
+-        var duration = globalProperties.duration;
+-
+-        var fraction = z % 1;
+-        var t = Math.min((Date.now() - zh.lastIntegerZoomTime) / duration, 1);
+-        var fromScale = 1;
+-        var toScale = 1;
+-        var mix, from, to;
+-
+-        if (z > zh.lastIntegerZoom) {
+-            mix = fraction + (1 - fraction) * t;
+-            fromScale *= 2;
+-            from = calculate({zoom: z - 1}, featureProperties);
+-            to = calculate({zoom: z}, featureProperties);
+-        } else {
+-            mix = 1 - (1 - t) * fraction;
+-            to = calculate({zoom: z}, featureProperties);
+-            from = calculate({zoom: z + 1}, featureProperties);
+-            fromScale /= 2;
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        return {
+-            from: from,
+-            fromScale: fromScale,
+-            to: to,
+-            toScale: toScale,
+-            t: mix
+-        };
+-    };
+-}
+-
+-},{"../util/util":119,"./parse_color":59,"./style_function":62}],62:[function(require,module,exports){
+-'use strict';
+-
+-var MapboxGLFunction = require('mapbox-gl-function');
+-
+-exports.interpolated = function(parameters) {
+-    var inner = MapboxGLFunction.interpolated(parameters);
+-    var outer = function(globalProperties, featureProperties) {
+-        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
+-    };
+-    outer.isFeatureConstant = inner.isFeatureConstant;
+-    outer.isZoomConstant = inner.isZoomConstant;
+-    return outer;
+-};
+-
+-exports['piecewise-constant'] = function(parameters) {
+-    var inner = MapboxGLFunction['piecewise-constant'](parameters);
+-    var outer = function(globalProperties, featureProperties) {
+-        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
+-    };
+-    outer.isFeatureConstant = inner.isFeatureConstant;
+-    outer.isZoomConstant = inner.isZoomConstant;
+-    return outer;
+-};
+-
+-exports.isFunctionDefinition = MapboxGLFunction.isFunctionDefinition;
+-
+-},{"mapbox-gl-function":144}],63:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var StyleTransition = require('./style_transition');
+-var StyleDeclaration = require('./style_declaration');
+-var styleSpec = require('./style_spec');
+-var validateStyle = require('./validate_style');
+-var parseColor = require('./parse_color');
+-var Evented = require('../util/evented');
+-
+-module.exports = StyleLayer;
+-
+-var TRANSITION_SUFFIX = '-transition';
+-
+-StyleLayer.create = function(layer, refLayer) {
+-    var Classes = {
+-        background: require('./style_layer/background_style_layer'),
+-        circle: require('./style_layer/circle_style_layer'),
+-        fill: require('./style_layer/fill_style_layer'),
+-        line: require('./style_layer/line_style_layer'),
+-        raster: require('./style_layer/raster_style_layer'),
+-        symbol: require('./style_layer/symbol_style_layer')
+-    };
+-    return new Classes[(refLayer || layer).type](layer, refLayer);
+-};
+-
+-function StyleLayer(layer, refLayer) {
+-    this.set(layer, refLayer);
+-}
+-
+-StyleLayer.prototype = util.inherit(Evented, {
+-
+-    set: function(layer, refLayer) {
+-        this.id = layer.id;
+-        this.ref = layer.ref;
+-        this.metadata = layer.metadata;
+-        this.type = (refLayer || layer).type;
+-        this.source = (refLayer || layer).source;
+-        this.sourceLayer = (refLayer || layer)['source-layer'];
+-        this.minzoom = (refLayer || layer).minzoom;
+-        this.maxzoom = (refLayer || layer).maxzoom;
+-        this.filter = (refLayer || layer).filter;
+-
+-        this.paint = {};
+-        this.layout = {};
+-
+-        this._paintSpecifications = styleSpec['paint_' + this.type];
+-        this._layoutSpecifications = styleSpec['layout_' + this.type];
+-
+-        this._paintTransitions = {}; // {[propertyName]: StyleTransition}
+-        this._paintTransitionOptions = {}; // {[className]: {[propertyName]: { duration:Number, delay:Number }}}
+-        this._paintDeclarations = {}; // {[className]: {[propertyName]: StyleDeclaration}}
+-        this._layoutDeclarations = {}; // {[propertyName]: StyleDeclaration}
+-        this._layoutFunctions = {}; // {[propertyName]: Boolean}
+-
+-        var paintName, layoutName;
+-
+-        // Resolve paint declarations
+-        for (var key in layer) {
+-            var match = key.match(/^paint(?:\.(.*))?$/);
+-            if (match) {
+-                var klass = match[1] || '';
+-                for (paintName in layer[key]) {
+-                    this.setPaintProperty(paintName, layer[key][paintName], klass);
+-                }
+-            }
++      }
++    },
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        // Resolve layout declarations
+-        if (this.ref) {
+-            this._layoutDeclarations = refLayer._layoutDeclarations;
+-        } else {
+-            for (layoutName in layer.layout) {
+-                this.setLayoutProperty(layoutName, layer.layout[layoutName]);
+-            }
++      }
++    }
++  },
++  "layout_symbol": {
++    "symbol-placement": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++          "point",
++          "line"
++      ],
++      "default": "point",
++      "doc": "Label placement relative to its geometry. `line` can only be used on LineStrings and Polygons.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        // set initial layout/paint values
+-        for (paintName in this._paintSpecifications) {
+-            this.paint[paintName] = this.getPaintValue(paintName);
++      }
++    },
++    "symbol-spacing": {
++      "type": "number",
++      "default": 250,
++      "minimum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "units": "pixels",
++      "doc": "Distance between two symbol anchors.",
++      "requires": [
++        {
++          "symbol-placement": "line"
+         }
+-        for (layoutName in this._layoutSpecifications) {
+-            this._updateLayoutValue(layoutName);
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    setLayoutProperty: function(name, value) {
+-
+-        if (value == null) {
+-            delete this._layoutDeclarations[name];
+-        } else {
+-            var key = 'layers.' + this.id + '.layout.' + name;
+-            if (this._handleErrors(validateStyle.layoutProperty, key, name, value)) return;
+-            this._layoutDeclarations[name] = new StyleDeclaration(this._layoutSpecifications[name], value);
++    "symbol-avoid-edges": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-        this._updateLayoutValue(name);
+-    },
+-
+-    getLayoutProperty: function(name) {
+-        return (
+-            this._layoutDeclarations[name] &&
+-            this._layoutDeclarations[name].value
+-        );
++      }
+     },
+-
+-    getLayoutValue: function(name, globalProperties, featureProperties) {
+-        var specification = this._layoutSpecifications[name];
+-        var declaration = this._layoutDeclarations[name];
+-
+-        if (declaration) {
+-            return declaration.calculate(globalProperties, featureProperties);
+-        } else {
+-            return specification.default;
++    "icon-allow-overlap": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the icon will be visible even if it collides with other previously drawn symbols.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    setPaintProperty: function(name, value, klass) {
+-        var validateStyleKey = 'layers.' + this.id + (klass ? '["paint.' + klass + '"].' : '.paint.') + name;
+-
+-        if (util.endsWith(name, TRANSITION_SUFFIX)) {
+-            if (!this._paintTransitionOptions[klass || '']) {
+-                this._paintTransitionOptions[klass || ''] = {};
+-            }
+-            if (value === null || value === undefined) {
+-                delete this._paintTransitionOptions[klass || ''][name];
+-            } else {
+-                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
+-                this._paintTransitionOptions[klass || ''][name] = value;
+-            }
+-        } else {
+-            if (!this._paintDeclarations[klass || '']) {
+-                this._paintDeclarations[klass || ''] = {};
+-            }
+-            if (value === null || value === undefined) {
+-                delete this._paintDeclarations[klass || ''][name];
+-            } else {
+-                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
+-                this._paintDeclarations[klass || ''][name] = new StyleDeclaration(this._paintSpecifications[name], value);
+-            }
++    "icon-ignore-placement": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, other symbols can be visible even if they collide with the icon.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    getPaintProperty: function(name, klass) {
+-        klass = klass || '';
+-        if (util.endsWith(name, TRANSITION_SUFFIX)) {
+-            return (
+-                this._paintTransitionOptions[klass] &&
+-                this._paintTransitionOptions[klass][name]
+-            );
+-        } else {
+-            return (
+-                this._paintDeclarations[klass] &&
+-                this._paintDeclarations[klass][name] &&
+-                this._paintDeclarations[klass][name].value
+-            );
++    "icon-optional": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.",
++      "requires": [
++        "icon-image",
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    getPaintValue: function(name, globalProperties, featureProperties) {
+-        var specification = this._paintSpecifications[name];
+-        var transition = this._paintTransitions[name];
+-
+-        if (transition) {
+-            return transition.calculate(globalProperties, featureProperties);
+-        } else if (specification.type === 'color' && specification.default) {
+-            return parseColor(specification.default);
+-        } else {
+-            return specification.default;
++    "icon-rotation-alignment": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "default": "viewport",
++      "doc": "Orientation of icon when map is rotated.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    getPaintValueStopZoomLevels: function(name) {
+-        var transition = this._paintTransitions[name];
+-        if (transition) {
+-            return transition.declaration.stopZoomLevels;
+-        } else {
+-            return [];
++    "icon-size": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Scale factor for icon. 1 is original size, 3 triples the size.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    getPaintInterpolationT: function(name, zoom) {
+-        var transition = this._paintTransitions[name];
+-        return transition.declaration.calculateInterpolationT({ zoom: zoom });
+-    },
+-
+-    isPaintValueFeatureConstant: function(name) {
+-        var transition = this._paintTransitions[name];
+-
+-        if (transition) {
+-            return transition.declaration.isFeatureConstant;
+-        } else {
+-            return true;
++    "icon-text-fit": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": false,
++      "values": [
++        "none",
++        "both",
++        "width",
++        "height"
++      ],
++      "default": "none",
++      "doc": "Position and scale an icon by the its corresponding text.",
++      "requires": [
++        "icon-image",
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
+         }
++      }
+     },
+-
+-    isPaintValueZoomConstant: function(name) {
+-        var transition = this._paintTransitions[name];
+-
+-        if (transition) {
+-            return transition.declaration.isZoomConstant;
+-        } else {
+-            return true;
++    "icon-text-fit-padding": {
++      "type": "array",
++      "value": "number",
++      "length": 4,
++      "default": [
++        0,
++        0,
++        0,
++        0
++      ],
++      "units": "pixels",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Size of padding area around the text-fit size in clockwise order: top, right, bottom, left.",
++      "requires": [
++        "icon-image",
++        "icon-text-fit",
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
+         }
++      }
+     },
+-
+-
+-    isHidden: function(zoom) {
+-        if (this.minzoom && zoom < this.minzoom) return true;
+-        if (this.maxzoom && zoom >= this.maxzoom) return true;
+-        if (this.layout['visibility'] === 'none') return true;
+-        if (this.paint[this.type + '-opacity'] === 0) return true;
+-        return false;
+-    },
+-
+-    updatePaintTransitions: function(classes, options, globalOptions, animationLoop) {
+-        var declarations = util.extend({}, this._paintDeclarations['']);
+-        for (var i = 0; i < classes.length; i++) {
+-            util.extend(declarations, this._paintDeclarations[classes[i]]);
+-        }
+-
+-        var name;
+-        for (name in declarations) { // apply new declarations
+-            this._applyPaintDeclaration(name, declarations[name], options, globalOptions, animationLoop);
+-        }
+-        for (name in this._paintTransitions) {
+-            if (!(name in declarations)) // apply removed declarations
+-                this._applyPaintDeclaration(name, null, options, globalOptions, animationLoop);
++    "icon-image": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "A string with {tokens} replaced, referencing the data property to pull from.",
++      "tokens": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    updatePaintTransition: function(name, classes, options, globalOptions, animationLoop) {
+-        var declaration = this._paintDeclarations[''][name];
+-        for (var i = 0; i < classes.length; i++) {
+-            var classPaintDeclarations = this._paintDeclarations[classes[i]];
+-            if (classPaintDeclarations && classPaintDeclarations[name]) {
+-                declaration = classPaintDeclarations[name];
+-            }
++    "icon-rotate": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "units": "degrees",
++      "doc": "Rotates the icon clockwise.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.21.0"
+         }
+-        this._applyPaintDeclaration(name, declaration, options, globalOptions, animationLoop);
++      }
+     },
+-
+-    // update all zoom-dependent layout/paint values
+-    recalculate: function(zoom, zoomHistory) {
+-        for (var paintName in this._paintTransitions) {
+-            this.paint[paintName] = this.getPaintValue(paintName, {zoom: zoom, zoomHistory: zoomHistory});
+-        }
+-        for (var layoutName in this._layoutFunctions) {
+-            this.layout[layoutName] = this.getLayoutValue(layoutName, {zoom: zoom, zoomHistory: zoomHistory});
++    "icon-padding": {
++      "type": "number",
++      "default": 2,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "units": "pixels",
++      "doc": "Size of the additional area around the icon bounding box used for detecting symbol collisions.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    serialize: function(options) {
+-        var output = {
+-            'id': this.id,
+-            'ref': this.ref,
+-            'metadata': this.metadata,
+-            'minzoom': this.minzoom,
+-            'maxzoom': this.maxzoom
+-        };
+-
+-        for (var klass in this._paintDeclarations) {
+-            var key = klass === '' ? 'paint' : 'paint.' + klass;
+-            output[key] = util.mapObject(this._paintDeclarations[klass], getDeclarationValue);
++    "icon-keep-upright": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the icon may be flipped to prevent it from being rendered upside-down.",
++      "requires": [
++        "icon-image",
++        {
++          "icon-rotation-alignment": "map"
++        },
++        {
++          "symbol-placement": "line"
+         }
+-
+-        if (!this.ref || (options && options.includeRefProperties)) {
+-            util.extend(output, {
+-                'type': this.type,
+-                'source': this.source,
+-                'source-layer': this.sourceLayer,
+-                'filter': this.filter,
+-                'layout': util.mapObject(this._layoutDeclarations, getDeclarationValue)
+-            });
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        return util.filterObject(output, function(value, key) {
+-            return value !== undefined && !(key === 'layout' && !Object.keys(value).length);
+-        });
++      }
+     },
+-
+-    // set paint transition based on a given paint declaration
+-    _applyPaintDeclaration: function (name, declaration, options, globalOptions, animationLoop) {
+-        var oldTransition = options.transition ? this._paintTransitions[name] : undefined;
+-
+-        if (declaration === null || declaration === undefined) {
+-            var spec = this._paintSpecifications[name];
+-            declaration = new StyleDeclaration(spec, spec.default);
++    "icon-offset": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        if (oldTransition && oldTransition.declaration.json === declaration.json) return;
+-
+-        var transitionOptions = util.extend({
+-            duration: 300,
+-            delay: 0
+-        }, globalOptions, this.getPaintProperty(name + TRANSITION_SUFFIX));
+-
+-        var newTransition = this._paintTransitions[name] =
+-                new StyleTransition(declaration, oldTransition, transitionOptions);
+-
+-        if (!newTransition.instant()) {
+-            newTransition.loopID = animationLoop.set(newTransition.endTime - Date.now());
++      }
++    },
++    "text-pitch-alignment": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Aligns text to the plane of the `viewport` or the `map` when the map is pitched. Matches `text-rotation-alignment` if unspecified.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
+         }
+-        if (oldTransition) {
+-            animationLoop.cancel(oldTransition.loopID);
++      }
++    },
++    "text-rotation-alignment": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "default": "viewport",
++      "doc": "Orientation of text when map is rotated.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    // update layout value if it's constant, or mark it as zoom-dependent
+-    _updateLayoutValue: function(name) {
+-        var declaration = this._layoutDeclarations[name];
+-
+-        if (declaration && declaration.isFunction) {
+-            this._layoutFunctions[name] = true;
+-        } else {
+-            delete this._layoutFunctions[name];
+-            this.layout[name] = this.getLayoutValue(name);
++    "text-field": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": "",
++      "tokens": true,
++      "doc": "Value to use for a text label. Feature properties are specified using tokens like {field_name}.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
++    "text-font": {
++      "type": "array",
++      "value": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": ["Open Sans Regular", "Arial Unicode MS Regular"],
++      "doc": "Font stack to use for displaying text.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-size": {
++      "type": "number",
++      "default": 16,
++      "minimum": 0,
++      "units": "pixels",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Font size.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-max-width": {
++      "type": "number",
++      "default": 10,
++      "minimum": 0,
++      "units": "em",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "The maximum line width for text wrapping.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-line-height": {
++      "type": "number",
++      "default": 1.2,
++      "units": "em",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Text leading value for multi-line text.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-letter-spacing": {
++      "type": "number",
++      "default": 0,
++      "units": "em",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Text tracking amount.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-justify": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "left",
++        "center",
++        "right"
++      ],
++      "default": "center",
++      "doc": "Text justification options.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "center",
++        "left",
++        "right",
++        "top",
++        "bottom",
++        "top-left",
++        "top-right",
++        "bottom-left",
++        "bottom-right"
++      ],
++      "default": "center",
++      "doc": "Part of the text placed closest to the anchor.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-max-angle": {
++      "type": "number",
++      "default": 45,
++      "units": "degrees",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Maximum angle change between adjacent characters.",
++      "requires": [
++        "text-field",
++        {
++          "symbol-placement": "line"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-rotate": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "units": "degrees",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Rotates the text clockwise.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-padding": {
++      "type": "number",
++      "default": 2,
++      "minimum": 0,
++      "units": "pixels",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Size of the additional area around the text bounding box used for detecting symbol collisions.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-keep-upright": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": true,
++      "doc": "If true, the text may be flipped vertically to prevent it from being rendered upside-down.",
++      "requires": [
++        "text-field",
++        {
++          "text-rotation-alignment": "map"
++        },
++        {
++          "symbol-placement": "line"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-transform": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "none",
++        "uppercase",
++        "lowercase"
++      ],
++      "default": "none",
++      "doc": "Specifies how to capitalize text, similar to the CSS `text-transform` property.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-offset": {
++      "type": "array",
++      "doc": "Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
++      "value": "number",
++      "units": "ems",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-allow-overlap": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the text will be visible even if it collides with other previously drawn symbols.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-ignore-placement": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, other symbols can be visible even if they collide with the text.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-optional": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not.",
++      "requires": [
++        "text-field",
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "layout_raster": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "filter": {
++    "type": "array",
++    "value": "*",
++    "doc": "A filter selects specific features from a layer."
++  },
++  "filter_operator": {
++    "type": "enum",
++    "values": [
++      "==",
++      "!=",
++      ">",
++      ">=",
++      "<",
++      "<=",
++      "in",
++      "!in",
++      "all",
++      "any",
++      "none",
++      "has",
++      "!has"
++    ],
++    "doc": "The filter operator."
++  },
++  "geometry_type": {
++    "type": "enum",
++    "values": [
++      "Point",
++      "LineString",
++      "Polygon"
++    ],
++    "doc": "The geometry type for the filter to select."
++  },
++  "color_operation": {
++    "type": "enum",
++    "values": [
++      "lighten",
++      "saturate",
++      "spin",
++      "fade",
++      "mix"
++    ],
++    "doc": "A color operation to apply."
++  },
++  "function": {
++    "stops": {
++      "type": "array",
++      "required": true,
++      "doc": "An array of stops.",
++      "value": "function_stop"
++    },
++    "base": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "doc": "The exponential base of the interpolation curve. It controls the rate at which the result increases. Higher values make the result increase more towards the high end of the range. With `1` the stops are interpolated linearly."
++    },
++    "property": {
++      "type": "string",
++      "doc": "The name of a global property or feature property to use as the function input.",
++      "default": "$zoom"
++    },
++    "type": {
++      "type": "enum",
++      "values": [
++          "exponential",
++          "interval",
++          "categorical"
++      ],
++      "doc": "The interpolation strategy to use in function evaluation.",
++      "default": "exponential"
++    }
++  },
++  "function_stop": {
++    "type": "array",
++    "minimum": 0,
++    "maximum": 22,
++    "value": [
++      "number",
++      "color"
++    ],
++    "length": 2,
++    "doc": "Zoom level and value pair."
++  },
++  "paint": [
++    "paint_fill",
++    "paint_line",
++    "paint_circle",
++    "paint_symbol",
++    "paint_raster",
++    "paint_background"
++  ],
++  "paint_fill": {
++    "fill-antialias": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": true,
++      "doc": "Whether or not the fill should be antialiased.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "fill-opacity": {
++      "type": "number",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "doc": "The opacity of the entire fill layer. In contrast to the fill-color, this value will also affect the 1px stroke around the fill, if the stroke is used.",
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.21.0"
++        }
++      }
++    },
++    "fill-color": {
++      "type": "color",
++      "default": "#000000",
++      "doc": "The color of the filled part of this layer. This color can be specified as rgba with an alpha component and the color's opacity will not affect the opacity of the 1px stroke, if it is used.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "fill-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.19.0"
++        }
++      }
++    },
++    "fill-outline-color": {
++      "type": "color",
++      "doc": "The outline color of the fill. Matches the value of `fill-color` if unspecified.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "fill-pattern"
++        },
++        {
++          "fill-antialias": true
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.19.0"
++        }
++      }
++    },
++    "fill-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "fill-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
++      "default": "map",
++      "requires": [
++        "fill-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "fill-pattern": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "paint_line": {
++    "line-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the line will be drawn.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "line-color": {
++      "type": "color",
++      "doc": "The color with which the line will be drawn.",
++      "default": "#000000",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "line-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.23.0"
++        }
++      }
++    },
++    "line-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "line-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
++      "default": "map",
++      "requires": [
++        "line-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "line-width": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Stroke thickness.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "line-gap-width": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "doc": "Draws a line casing outside of a line's actual path. Value indicates the width of the inner gap.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "line-offset": {
++      "type": "number",
++      "default": 0,
++      "doc": "The line's offset. For linear features, a positive value offsets the line to the right, relative to the direction of the line, and a negative value to the left. For polygon features, a positive value results in an inset, and a negative value results in an outset.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "sdk-support": {
++        "basic": {
++          "js": "0.12.1",
++          "ios": "3.1.0",
++          "android": "3.0.0"
++        }
++      }
++    },
++    "line-blur": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Blur applied to the line, in pixels.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "line-dasharray": {
++      "type": "array",
++      "value": "number",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Specifies the lengths of the alternating dashes and gaps that form the dash pattern. The lengths are later scaled by the line width. To convert a dash length to pixels, multiply the length by the current line width.",
++      "minimum": 0,
++      "transition": true,
++      "units": "line widths",
++      "requires": [
++        {
++          "!": "line-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "line-pattern": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "Name of image in sprite to use for drawing image lines. For seamless patterns, image width must be a factor of two (2, 4, 8, ..., 512).",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "paint_circle": {
++    "circle-radius": {
++      "type": "number",
++      "default": 5,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Circle radius.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.18.0"
++        }
++      }
++    },
++    "circle-color": {
++      "type": "color",
++      "default": "#000000",
++      "doc": "The color of the circle.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.18.0"
++        }
++      }
++    },
++    "circle-blur": {
++      "type": "number",
++      "default": 0,
++      "doc": "Amount to blur the circle. 1 blurs the circle such that only the centerpoint is full opacity.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.20.0"
++        }
++      }
++    },
++    "circle-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the circle will be drawn.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.20.0"
++        }
++      }
++    },
++    "circle-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [0, 0],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "circle-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
++      "default": "map",
++      "requires": [
++        "circle-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "circle-pitch-scale": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "default": "map",
++      "doc": "Controls the scaling behavior of the circle when the map is pitched. The value `map` scales circles according to their apparent distance to the camera. The value `viewport` results in no pitch-related scaling.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
++        }
++      }
++    }
++  },
++  "paint_symbol": {
++    "icon-opacity": {
++      "doc": "The opacity at which the icon will be drawn.",
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "icon-color": {
++      "type": "color",
++      "default": "#000000",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "The color of the icon. This can only be used with sdf icons.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "icon-halo-color": {
++      "type": "color",
++      "default": "rgba(0, 0, 0, 0)",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "The color of the icon's halo. Icon halos can only be used with sdf icons.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "icon-halo-width": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance of halo to the icon outline.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "icon-halo-blur": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Fade out the halo towards the outside.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "icon-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "icon-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
++      "default": "map",
++      "requires": [
++        "icon-image",
++        "icon-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the text will be drawn.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-color": {
++      "type": "color",
++      "doc": "The color with which the text will be drawn.",
++      "default": "#000000",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-halo-color": {
++      "type": "color",
++      "default": "rgba(0, 0, 0, 0)",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "The color of the text's halo, which helps it stand out from backgrounds.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-halo-width": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance of halo to the font outline. Max text halo width is 1/4 of the font-size.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-halo-blur": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The halo's fadeout distance towards the outside.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
++      "default": "map",
++      "requires": [
++        "text-field",
++        "text-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "paint_raster": {
++    "raster-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the image will be drawn.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "raster-hue-rotate": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "units": "degrees",
++      "doc": "Rotates hues around the color wheel.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "raster-brightness-min": {
++      "type": "number",
++      "function": "interpolated",
++      "zoom-function": true,
++      "doc": "Increase or reduce the brightness of the image. The value is the minimum brightness.",
++      "default": 0,
++      "minimum": 0,
++      "maximum": 1,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "raster-brightness-max": {
++      "type": "number",
++      "function": "interpolated",
++      "zoom-function": true,
++      "doc": "Increase or reduce the brightness of the image. The value is the maximum brightness.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "raster-saturation": {
++      "type": "number",
++      "doc": "Increase or reduce the saturation of the image.",
++      "default": 0,
++      "minimum": -1,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "raster-contrast": {
++      "type": "number",
++      "doc": "Increase or reduce the contrast of the image.",
++      "default": 0,
++      "minimum": -1,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "raster-fade-duration": {
++      "type": "number",
++      "default": 300,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "units": "milliseconds",
++      "doc": "Fade duration when a new tile is added.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "paint_background": {
++    "background-color": {
++      "type": "color",
++      "default": "#000000",
++      "doc": "The color with which the background will be drawn.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "background-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "background-pattern": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "transition": true,
++      "doc": "Name of image in sprite to use for drawing an image background. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "background-opacity": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "doc": "The opacity at which the background will be drawn.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "transition": {
++    "duration": {
++      "type": "number",
++      "default": 300,
++      "minimum": 0,
++      "units": "milliseconds",
++      "doc": "Time allotted for transitions to complete."
++    },
++    "delay": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "units": "milliseconds",
++      "doc": "Length of time before a transition begins."
++    }
++  }
++}
++
++},{}],66:[function(require,module,exports){
++module.exports={"$version":8,"$root":{"version":{"required":true,"type":"enum","values":[8]},"name":{"type":"string"},"metadata":{"type":"*"},"center":{"type":"array","value":"number"},"zoom":{"type":"number"},"bearing":{"type":"number","default":0,"period":360,"units":"degrees"},"pitch":{"type":"number","default":0,"units":"degrees"},"sources":{"required":true,"type":"sources"},"sprite":{"type":"string"},"glyphs":{"type":"string"},"transition":{"type":"transition"},"layers":{"required":true,"type":"array","value":"layer"}},"sources":{"*":{"type":"source"}},"source":["source_tile","source_geojson","source_video","source_image"],"source_tile":{"type":{"required":true,"type":"enum","values":["vector","raster"]},"url":{"type":"string"},"tiles":{"type":"array","value":"string"},"minzoom":{"type":"number","default":0},"maxzoom":{"type":"number","default":22},"tileSize":{"type":"number","default":512,"units":"pixels"},"*":{"type":"*"}},"source_geojson":{"type":{"required":true,"type":"enum","values":["geojson"]},"data":{"type":"*"},"maxzoom":{"type":"number","default":14},"buffer":{"type":"number","default":64},"tolerance":{"type":"number","default":3},"cluster":{"type":"boolean","default":false},"clusterRadius":{"type":"number","default":400},"clusterMaxZoom":{"type":"number"}},"source_video":{"type":{"required":true,"type":"enum","values":["video"]},"urls":{"required":true,"type":"array","value":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"source_image":{"type":{"required":true,"type":"enum","values":["image"]},"url":{"required":true,"type":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"layer":{"id":{"type":"string","required":true},"type":{"type":"enum","values":["fill","line","symbol","circle","raster","background"]},"metadata":{"type":"*"},"ref":{"type":"string"},"source":{"type":"string"},"source-layer":{"type":"string"},"minzoom":{"type":"number","minimum":0,"maximum":22},"maxzoom":{"type":"number","minimum":0,"maximum":22},"interactive":{"type":"boolean","default":false},"filter":{"type":"filter"},"layout":{"type":"layout"},"paint":{"type":"paint"},"paint.*":{"type":"paint"}},"layout":["layout_fill","layout_line","layout_circle","layout_symbol","layout_raster","layout_background"],"layout_background":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_fill":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_circle":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_line":{"line-cap":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["butt","round","square"],"default":"butt"},"line-join":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["bevel","round","miter"],"default":"miter"},"line-miter-limit":{"type":"number","default":2,"function":"interpolated","zoom-function":true,"property-function":true,"requires":[{"line-join":"miter"}]},"line-round-limit":{"type":"number","default":1.05,"function":"interpolated","zoom-function":true,"property-function":true,"requires":[{"line-join":"round"}]},"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_symbol":{"symbol-placement":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["point","line"],"default":"point"},"symbol-spacing":{"type":"number","default":250,"minimum":1,"function":"interpolated","zoom-function":true,"property-function":true,"units":"pixels","requires":[{"symbol-placement":"line"}]},"symbol-avoid-edges":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false},"icon-allow-overlap":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image"]},"icon-ignore-placement":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image"]},"icon-optional":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image","text-field"]},"icon-rotation-alignment":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"viewport","requires":["icon-image"]},"icon-size":{"type":"number","default":1,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"requires":["icon-image"]},"icon-text-fit":{"type":"enum","function":"piecewise-constant"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++},{}],67:[function(require,module,exports){
++'use strict';
++
++var featureFilter = require('feature-filter');
++var Buffer = require('./buffer');
++var util = require('../util/util');
++var StructArrayType = require('../util/struct_array');
++var VertexArrayObject = require('../render/vertex_array_object');
++
++module.exports = Bucket;
++
++/**
++ * Instantiate the appropriate subclass of `Bucket` for `options`.
++ * @private
++ * @param options See `Bucket` constructor options
++ * @returns {Bucket}
++ */
++Bucket.create = function(options) {
++    var Classes = {
++        fill: require('./bucket/fill_bucket'),
++        line: require('./bucket/line_bucket'),
++        circle: require('./bucket/circle_bucket'),
++        symbol: require('./bucket/symbol_bucket')
++    };
++    return new Classes[options.layer.type](options);
++};
++
++
++/**
++ * The maximum extent of a feature that can be safely stored in the buffer.
++ * In practice, all features are converted to this extent before being added.
++ *
++ * Positions are stored as signed 16bit integers.
++ * One bit is lost for signedness to support featuers extending past the left edge of the tile.
++ * One bit is lost because the line vertex buffer packs 1 bit of other data into the int.
++ * One bit is lost to support features extending past the extent on the right edge of the tile.
++ * This leaves us with 2^13 = 8192
++ *
++ * @private
++ * @readonly
++ */
++Bucket.EXTENT = 8192;
++
++/**
++ * The `Bucket` class is the single point of knowledge about turning vector
++ * tiles into WebGL buffers.
++ *
++ * `Bucket` is an abstract class. A subclass exists for each Mapbox GL
++ * style spec layer type. Because `Bucket` is an abstract class,
++ * instances should be created via the `Bucket.create` method.
++ *
++ * @class Bucket
++ * @private
++ * @param options
++ * @param {number} options.zoom Zoom level of the buffers being built. May be
++ *     a fractional zoom level.
++ * @param options.layer A Mapbox GL style layer object
++ * @param {Object.<string, Buffer>} options.buffers The set of `Buffer`s being
++ *     built for this tile. This object facilitates sharing of `Buffer`s be
++       between `Bucket`s.
++ */
++function Bucket(options) {
++    this.zoom = options.zoom;
++    this.overscaling = options.overscaling;
++    this.layer = options.layer;
++    this.childLayers = options.childLayers;
++
++    this.type = this.layer.type;
++    this.features = [];
++    this.id = this.layer.id;
++    this.index = options.index;
++    this.sourceLayer = this.layer.sourceLayer;
++    this.sourceLayerIndex = options.sourceLayerIndex;
++    this.minZoom = this.layer.minzoom;
++    this.maxZoom = this.layer.maxzoom;
++
++    this.paintAttributes = createPaintAttributes(this);
++
++    if (options.arrays) {
++        var childLayers = this.childLayers;
++        this.bufferGroups = util.mapObject(options.arrays, function(programArrayGroups, programName) {
++            return programArrayGroups.map(function(programArrayGroup) {
++
++                var group = util.mapObject(programArrayGroup, function(arrays, layoutOrPaint) {
++                    return util.mapObject(arrays, function(array, name) {
++                        var arrayType = options.arrayTypes[programName][layoutOrPaint][name];
++                        var type = (arrayType.members.length && arrayType.members[0].name === 'vertices' ? Buffer.BufferType.ELEMENT : Buffer.BufferType.VERTEX);
++                        return new Buffer(array, arrayType, type);
++                    });
++                });
++
++                group.vaos = {};
++                if (group.layout.element2) group.secondVaos = {};
++                for (var l = 0; l < childLayers.length; l++) {
++                    var layerName = childLayers[l].id;
++                    group.vaos[layerName] = new VertexArrayObject();
++                    if (group.layout.element2) group.secondVaos[layerName] = new VertexArrayObject();
++                }
++
++                return group;
++            });
++        });
++    }
++}
++
++/**
++ * Build the buffers! Features are set directly to the `features` property.
++ * @private
++ */
++Bucket.prototype.populateBuffers = function() {
++    this.createArrays();
++    this.recalculateStyleLayers();
++
++    for (var i = 0; i < this.features.length; i++) {
++        this.addFeature(this.features[i]);
++    }
++
++    this.trimArrays();
++};
++
++/**
++ * Check if there is enough space available in the current element group for
++ * `vertexLength` vertices. If not, append a new elementGroup. Should be called
++ * by `populateBuffers` and its callees.
++ * @private
++ * @param {string} programName the name of the program associated with the buffer that will receive the vertices
++ * @param {number} vertexLength The number of vertices that will be inserted to the buffer.
++ */
++Bucket.prototype.makeRoomFor = function(programName, numVertices) {
++    var groups = this.arrayGroups[programName];
++    var currentGroup = groups.length && groups[groups.length - 1];
++
++    if (!currentGroup || currentGroup.layout.vertex.length + numVertices > 65535) {
++
++        var arrayTypes = this.arrayTypes[programName];
++        var VertexArrayType = arrayTypes.layout.vertex;
++        var ElementArrayType = arrayTypes.layout.element;
++        var ElementArrayType2 = arrayTypes.layout.element2;
++
++        currentGroup = {
++            index: groups.length,
++            layout: {},
++            paint: {}
++        };
++
++        currentGroup.layout.vertex = new VertexArrayType();
++        if (ElementArrayType) currentGroup.layout.element = new ElementArrayType();
++        if (ElementArrayType2) currentGroup.layout.element2 = new ElementArrayType2();
++
++        for (var i = 0; i < this.childLayers.length; i++) {
++            var layerName = this.childLayers[i].id;
++            var PaintVertexArrayType = arrayTypes.paint[layerName];
++            currentGroup.paint[layerName] = new PaintVertexArrayType();
++        }
++
++        groups.push(currentGroup);
++    }
++
++    return currentGroup;
++};
++
++/**
++ * Start using a new shared `buffers` object and recreate instances of `Buffer`
++ * as necessary.
++ * @private
++ */
++Bucket.prototype.createArrays = function() {
++    this.arrayGroups = {};
++    this.arrayTypes = {};
++
++    for (var programName in this.programInterfaces) {
++        var programInterface = this.programInterfaces[programName];
++        var programArrayTypes = this.arrayTypes[programName] = { layout: {}, paint: {} };
++        this.arrayGroups[programName] = [];
++
++        if (programInterface.vertexBuffer) {
++            var VertexArrayType = new StructArrayType({
++                members: this.programInterfaces[programName].layoutAttributes,
++                alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
++            });
++
++            programArrayTypes.layout.vertex = VertexArrayType;
++
++            var layerPaintAttributes = this.paintAttributes[programName];
++            for (var layerName in layerPaintAttributes) {
++                var PaintVertexArrayType = new StructArrayType({
++                    members: layerPaintAttributes[layerName].attributes,
++                    alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
++                });
++
++                programArrayTypes.paint[layerName] = PaintVertexArrayType;
++            }
++        }
++
++        if (programInterface.elementBuffer) {
++            var ElementArrayType = createElementBufferType(programInterface.elementBufferComponents);
++            programArrayTypes.layout.element = ElementArrayType;
++        }
++
++        if (programInterface.elementBuffer2) {
++            var ElementArrayType2 = createElementBufferType(programInterface.elementBuffer2Components);
++            programArrayTypes.layout.element2 = ElementArrayType2;
++        }
++    }
++};
++
++Bucket.prototype.destroy = function(gl) {
++    for (var programName in this.bufferGroups) {
++        var programBufferGroups = this.bufferGroups[programName];
++        for (var i = 0; i < programBufferGroups.length; i++) {
++            var programBuffers = programBufferGroups[i];
++            for (var paintBuffer in programBuffers.paint) {
++                programBuffers.paint[paintBuffer].destroy(gl);
++            }
++            for (var layoutBuffer in programBuffers.layout) {
++                programBuffers.layout[layoutBuffer].destroy(gl);
++            }
++            for (var j in programBuffers.vaos) {
++                programBuffers.vaos[j].destroy(gl);
++            }
++            for (var k in programBuffers.secondVaos) {
++                programBuffers.secondVaos[k].destroy(gl);
++            }
++        }
++    }
++
++};
++
++Bucket.prototype.trimArrays = function() {
++    for (var programName in this.arrayGroups) {
++        var programArrays = this.arrayGroups[programName];
++        for (var paintArray in programArrays.paint) {
++            programArrays.paint[paintArray].trim();
++        }
++        for (var layoutArray in programArrays.layout) {
++            programArrays.layout[layoutArray].trim();
++        }
++    }
++};
++
++Bucket.prototype.setUniforms = function(gl, programName, program, layer, globalProperties) {
++    var uniforms = this.paintAttributes[programName][layer.id].uniforms;
++    for (var i = 0; i < uniforms.length; i++) {
++        var uniform = uniforms[i];
++        var uniformLocation = program[uniform.name];
++        gl['uniform' + uniform.components + 'fv'](uniformLocation, uniform.getValue(layer, globalProperties));
++    }
++};
++
++Bucket.prototype.serialize = function() {
++    return {
++        layerId: this.layer.id,
++        zoom: this.zoom,
++        arrays: util.mapObject(this.arrayGroups, function(programArrayGroups) {
++            return programArrayGroups.map(function(arrayGroup) {
++                return util.mapObject(arrayGroup, function(arrays) {
++                    return util.mapObject(arrays, function(array) {
++                        return array.serialize();
++                    });
++                });
++            });
++        }),
++        arrayTypes: util.mapObject(this.arrayTypes, function(programArrayTypes) {
++            return util.mapObject(programArrayTypes, function(arrayTypes) {
++                return util.mapObject(arrayTypes, function(arrayType) {
++                    return arrayType.serialize();
++                });
++            });
++        }),
++
++        childLayerIds: this.childLayers.map(function(layer) {
++            return layer.id;
++        })
++    };
++};
++
++Bucket.prototype.createFilter = function() {
++    if (!this.filter) {
++        this.filter = featureFilter(this.layer.filter);
++    }
++};
++
++var FAKE_ZOOM_HISTORY = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
++Bucket.prototype.recalculateStyleLayers = function() {
++    for (var i = 0; i < this.childLayers.length; i++) {
++        this.childLayers[i].recalculate(this.zoom, FAKE_ZOOM_HISTORY);
++    }
++};
++
++Bucket.prototype.getProgramMacros = function(programInterface, layer) {
++    var macros = [];
++    var attributes = this.paintAttributes[programInterface][layer.id].attributes;
++    for (var i = 0; i < attributes.length; i++) {
++        var attribute = attributes[i];
++        macros.push('ATTRIBUTE_' + (attribute.isFunction ? 'ZOOM_FUNCTION_' : '') + attribute.name.toUpperCase());
++    }
++    return macros;
++};
++
++Bucket.prototype.addPaintAttributes = function(interfaceName, globalProperties, featureProperties, startGroup, startIndex) {
++    for (var l = 0; l < this.childLayers.length; l++) {
++        var layer = this.childLayers[l];
++        var groups = this.arrayGroups[interfaceName];
++        for (var g = startGroup.index; g < groups.length; g++) {
++            var group = groups[g];
++            var length = group.layout.vertex.length;
++            var vertexArray = group.paint[layer.id];
++            vertexArray.resize(length);
++
++            var attributes = this.paintAttributes[interfaceName][layer.id].attributes;
++            for (var m = 0; m < attributes.length; m++) {
++                var attribute = attributes[m];
++
++                var value = attribute.getValue(layer, globalProperties, featureProperties);
++                var multiplier = attribute.multiplier || 1;
++                var components = attribute.components || 1;
++
++                for (var i = startIndex; i < length; i++) {
++                    var vertex = vertexArray.get(i);
++                    for (var c = 0; c < components; c++) {
++                        var memberName = components > 1 ? (attribute.name + c) : attribute.name;
++                        vertex[memberName] = value[c] * multiplier;
++                    }
++                }
++            }
++        }
++    }
++};
++
++function createElementBufferType(components) {
++    return new StructArrayType({
++        members: [{
++            type: Buffer.ELEMENT_ATTRIBUTE_TYPE,
++            name: 'vertices',
++            components: components || 3
++        }]
++    });
++}
++
++function createPaintAttributes(bucket) {
++    var attributes = {};
++    for (var interfaceName in bucket.programInterfaces) {
++        var layerPaintAttributes = attributes[interfaceName] = {};
++
++        for (var c = 0; c < bucket.childLayers.length; c++) {
++            var childLayer = bucket.childLayers[c];
++            layerPaintAttributes[childLayer.id] = { attributes: [], uniforms: [] };
++        }
++
++        var interface_ = bucket.programInterfaces[interfaceName];
++        if (!interface_.paintAttributes) continue;
++        for (var i = 0; i < interface_.paintAttributes.length; i++) {
++            var attribute = interface_.paintAttributes[i];
++
++            for (var j = 0; j < bucket.childLayers.length; j++) {
++                var layer = bucket.childLayers[j];
++                var paintAttributes = layerPaintAttributes[layer.id];
++
++                if (layer.isPaintValueFeatureConstant(attribute.paintProperty)) {
++                    paintAttributes.uniforms.push(attribute);
++                } else if (layer.isPaintValueZoomConstant(attribute.paintProperty)) {
++                    paintAttributes.attributes.push(attribute);
++                } else {
++
++                    var zoomLevels = layer.getPaintValueStopZoomLevels(attribute.paintProperty);
++
++                    // Pick the index of the first offset to add to the buffers.
++                    // Find the four closest stops, ideally with two on each side of the zoom level.
++                    var numStops = 0;
++                    while (numStops < zoomLevels.length && zoomLevels[numStops] < bucket.zoom) numStops++;
++                    var stopOffset = Math.max(0, Math.min(zoomLevels.length - 4, numStops - 2));
++
++                    var fourZoomLevels = [];
++                    for (var s = 0; s < 4; s++) {
++                        fourZoomLevels.push(zoomLevels[Math.min(stopOffset + s, zoomLevels.length - 1)]);
++                    }
++
++                    var components = attribute.components;
++                    if (components === 1) {
++                        paintAttributes.attributes.push(util.extend({}, attribute, {
++                            getValue: createFunctionGetValue(attribute, fourZoomLevels),
++                            isFunction: true,
++                            components: components * 4
++                        }));
++                    } else {
++                        for (var k = 0; k < 4; k++) {
++                            paintAttributes.attributes.push(util.extend({}, attribute, {
++                                getValue: createFunctionGetValue(attribute, [fourZoomLevels[k]]),
++                                isFunction: true,
++                                name: attribute.name + k
++                            }));
++                        }
++                    }
++
++                    paintAttributes.uniforms.push(util.extend({}, attribute, {
++                        name: 'u_' + attribute.name.slice(2) + '_t',
++                        getValue: createGetUniform(attribute, stopOffset),
++                        components: 1
++                    }));
++                }
++            }
++        }
++    }
++    return attributes;
++}
++
++function createFunctionGetValue(attribute, stopZoomLevels) {
++    return function(layer, globalProperties, featureProperties) {
++        if (stopZoomLevels.length === 1) {
++            // return one multi-component value like color0
++            return attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevels[0] }), featureProperties);
++        } else {
++            // pack multiple single-component values into a four component attribute
++            var values = [];
++            for (var z = 0; z < stopZoomLevels.length; z++) {
++                var stopZoomLevel = stopZoomLevels[z];
++                values.push(attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevel }), featureProperties)[0]);
++            }
++            return values;
++        }
++    };
++}
++
++function createGetUniform(attribute, stopOffset) {
++    return function(layer, globalProperties) {
++        // stopInterp indicates which stops need to be interpolated.
++        // If stopInterp is 3.5 then interpolate half way between stops 3 and 4.
++        var stopInterp = layer.getPaintInterpolationT(attribute.paintProperty, globalProperties.zoom);
++        // We can only store four stop values in the buffers. stopOffset is the number of stops that come
++        // before the stops that were added to the buffers.
++        return [Math.max(0, Math.min(4, stopInterp - stopOffset))];
++    };
++}
++
++},{"../render/vertex_array_object":93,"../util/struct_array":167,"../util/util":169,"./bucket/circle_bucket":68,"./bucket/fill_bucket":69,"./bucket/line_bucket":70,"./bucket/symbol_bucket":71,"./buffer":72,"feature-filter":12}],68:[function(require,module,exports){
++'use strict';
++
++var Bucket = require('../bucket');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
++var EXTENT = Bucket.EXTENT;
++
++module.exports = CircleBucket;
++
++/**
++ * Circles are represented by two triangles.
++ *
++ * Each corner has a pos that is the center of the circle and an extrusion
++ * vector that is where it points.
++ * @private
++ */
++function CircleBucket() {
++    Bucket.apply(this, arguments);
++}
++
++CircleBucket.prototype = util.inherit(Bucket, {});
++
++CircleBucket.prototype.addCircleVertex = function(vertexArray, x, y, extrudeX, extrudeY) {
++    return vertexArray.emplaceBack(
++            (x * 2) + ((extrudeX + 1) / 2),
++            (y * 2) + ((extrudeY + 1) / 2));
++};
++
++CircleBucket.prototype.programInterfaces = {
++    circle: {
++        vertexBuffer: true,
++        elementBuffer: true,
++
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }],
++        paintAttributes: [{
++            name: 'a_color',
++            components: 4,
++            type: 'Uint8',
++            getValue: function(layer, globalProperties, featureProperties) {
++                return util.premultiply(layer.getPaintValue("circle-color", globalProperties, featureProperties));
++            },
++            multiplier: 255,
++            paintProperty: 'circle-color'
++        }, {
++            name: 'a_radius',
++            components: 1,
++            type: 'Uint16',
++            isLayerConstant: false,
++            getValue: function(layer, globalProperties, featureProperties) {
++                return [layer.getPaintValue("circle-radius", globalProperties, featureProperties)];
++            },
++            multiplier: 10,
++            paintProperty: 'circle-radius'
++        }]
++    }
++};
++
++CircleBucket.prototype.addFeature = function(feature) {
++    var globalProperties = {zoom: this.zoom};
++    var geometries = loadGeometry(feature);
++
++    var startGroup = this.makeRoomFor('circle', 0);
++    var startIndex = startGroup.layout.vertex.length;
++
++    for (var j = 0; j < geometries.length; j++) {
++        for (var k = 0; k < geometries[j].length; k++) {
++
++            var x = geometries[j][k].x;
++            var y = geometries[j][k].y;
++
++            // Do not include points that are outside the tile boundaries.
++            if (x < 0 || x >= EXTENT || y < 0 || y >= EXTENT) continue;
++
++            // this geometry will be of the Point type, and we'll derive
++            // two triangles from it.
++            //
++            // ┌─────────┐
++            // │ 3     2 │
++            // │         │
++            // │ 0     1 │
++            // └─────────┘
++
++            var group = this.makeRoomFor('circle', 4);
++            var vertexArray = group.layout.vertex;
++
++            var index = this.addCircleVertex(vertexArray, x, y, -1, -1);
++            this.addCircleVertex(vertexArray, x, y, 1, -1);
++            this.addCircleVertex(vertexArray, x, y, 1, 1);
++            this.addCircleVertex(vertexArray, x, y, -1, 1);
++
++            group.layout.element.emplaceBack(index, index + 1, index + 2);
++            group.layout.element.emplaceBack(index, index + 3, index + 2);
++        }
++    }
++
++    this.addPaintAttributes('circle', globalProperties, feature.properties, startGroup, startIndex);
++};
++
++},{"../../util/util":169,"../bucket":67,"../load_geometry":74}],69:[function(require,module,exports){
++'use strict';
++
++var Bucket = require('../bucket');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
++
++module.exports = FillBucket;
++
++function FillBucket() {
++    Bucket.apply(this, arguments);
++}
++
++FillBucket.prototype = util.inherit(Bucket, {});
++
++FillBucket.prototype.programInterfaces = {
++    fill: {
++        vertexBuffer: true,
++        elementBuffer: true,
++        elementBuffer2: true,
++        elementBuffer2Components: 2,
++
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }]
++    }
++};
++
++FillBucket.prototype.addFeature = function(feature) {
++    var lines = loadGeometry(feature);
++    for (var i = 0; i < lines.length; i++) {
++        this.addFill(lines[i]);
++    }
++};
++
++FillBucket.prototype.addFill = function(vertices) {
++    if (vertices.length < 3) {
++        //console.warn('a fill must have at least three vertices');
++        return;
++    }
++
++    // Calculate the total number of vertices we're going to produce so that we
++    // can resize the buffer beforehand, or detect whether the current line
++    // won't fit into the buffer anymore.
++    // In order to be able to use the vertex buffer for drawing the antialiased
++    // outlines, we separate all polygon vertices with a degenerate (out-of-
++    // viewplane) vertex.
++
++    var len = vertices.length;
++
++    // Expand this geometry buffer to hold all the required vertices.
++    var group = this.makeRoomFor('fill', len + 1);
++
++    // We're generating triangle fans, so we always start with the first coordinate in this polygon.
++    var firstIndex, prevIndex;
++    for (var i = 0; i < vertices.length; i++) {
++        var currentVertex = vertices[i];
++
++        var currentIndex = group.layout.vertex.emplaceBack(currentVertex.x, currentVertex.y);
++        if (i === 0) firstIndex = currentIndex;
++
++        // Only add triangles that have distinct vertices.
++        if (i >= 2 && (currentVertex.x !== vertices[0].x || currentVertex.y !== vertices[0].y)) {
++            group.layout.element.emplaceBack(firstIndex, prevIndex, currentIndex);
++        }
++
++        if (i >= 1) {
++            group.layout.element2.emplaceBack(prevIndex, currentIndex);
++        }
++
++        prevIndex = currentIndex;
++    }
++};
++
++},{"../../util/util":169,"../bucket":67,"../load_geometry":74}],70:[function(require,module,exports){
++'use strict';
++
++var Bucket = require('../bucket');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
++var EXTENT = Bucket.EXTENT;
++
++// NOTE ON EXTRUDE SCALE:
++// scale the extrusion vector so that the normal length is this value.
++// contains the "texture" normals (-1..1). this is distinct from the extrude
++// normals for line joins, because the x-value remains 0 for the texture
++// normal array, while the extrude normal actually moves the vertex to create
++// the acute/bevelled line join.
++var EXTRUDE_SCALE = 63;
++
++/*
++ * Sharp corners cause dashed lines to tilt because the distance along the line
++ * is the same at both the inner and outer corners. To improve the appearance of
++ * dashed lines we add extra points near sharp corners so that a smaller part
++ * of the line is tilted.
++ *
++ * COS_HALF_SHARP_CORNER controls how sharp a corner has to be for us to add an
++ * extra vertex. The default is 75 degrees.
++ *
++ * The newly created vertices are placed SHARP_CORNER_OFFSET pixels from the corner.
++ */
++var COS_HALF_SHARP_CORNER = Math.cos(75 / 2 * (Math.PI / 180));
++var SHARP_CORNER_OFFSET = 15;
++
++// The number of bits that is used to store the line distance in the buffer.
++var LINE_DISTANCE_BUFFER_BITS = 14;
++
++// We don't have enough bits for the line distance as we'd like to have, so
++// use this value to scale the line distance (in tile units) down to a smaller
++// value. This lets us store longer distances while sacrificing precision.
++var LINE_DISTANCE_SCALE = 1 / 2;
++
++// The maximum line distance, in tile units, that fits in the buffer.
++var MAX_LINE_DISTANCE = Math.pow(2, LINE_DISTANCE_BUFFER_BITS) / LINE_DISTANCE_SCALE;
++
++
++module.exports = LineBucket;
++
++/**
++ * @private
++ */
++function LineBucket() {
++    Bucket.apply(this, arguments);
++}
++
++LineBucket.prototype = util.inherit(Bucket, {});
++
++LineBucket.prototype.addLineVertex = function(vertexBuffer, point, extrude, tx, ty, dir, linesofar) {
++    return vertexBuffer.emplaceBack(
++            // a_pos
++            (point.x << 1) | tx,
++            (point.y << 1) | ty,
++            // a_data
++            // add 128 to store an byte in an unsigned byte
++            Math.round(EXTRUDE_SCALE * extrude.x) + 128,
++            Math.round(EXTRUDE_SCALE * extrude.y) + 128,
++            // Encode the -1/0/1 direction value into the first two bits of .z of a_data.
++            // Combine it with the lower 6 bits of `linesofar` (shifted by 2 bites to make
++            // room for the direction value). The upper 8 bits of `linesofar` are placed in
++            // the `w` component. `linesofar` is scaled down by `LINE_DISTANCE_SCALE` so that
++            // we can store longer distances while sacrificing precision.
++            ((dir === 0 ? 0 : (dir < 0 ? -1 : 1)) + 1) | (((linesofar * LINE_DISTANCE_SCALE) & 0x3F) << 2),
++            (linesofar * LINE_DISTANCE_SCALE) >> 6);
++};
++
++LineBucket.prototype.programInterfaces = {
++    line: {
++        vertexBuffer: true,
++        elementBuffer: true,
++
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }, {
++            name: 'a_data',
++            components: 4,
++            type: 'Uint8'
++        }]
++    }
++};
++
++LineBucket.prototype.addFeature = function(feature) {
++    var lines = loadGeometry(feature);
++    for (var i = 0; i < lines.length; i++) {
++        this.addLine(
++            lines[i],
++            this.layer.layout['line-join'],
++            this.layer.layout['line-cap'],
++            this.layer.layout['line-miter-limit'],
++            this.layer.layout['line-round-limit']
++        );
++    }
++};
++
++LineBucket.prototype.addLine = function(vertices, join, cap, miterLimit, roundLimit) {
++
++    var len = vertices.length;
++    // If the line has duplicate vertices at the end, adjust length to remove them.
++    while (len > 2 && vertices[len - 1].equals(vertices[len - 2])) {
++        len--;
++    }
++
++    if (vertices.length < 2) {
++        //console.warn('a line must have at least two vertices');
++        return;
++    }
++
++    if (join === 'bevel') miterLimit = 1.05;
++
++    var sharpCornerOffset = SHARP_CORNER_OFFSET * (EXTENT / (512 * this.overscaling));
++
++    var firstVertex = vertices[0],
++        lastVertex = vertices[len - 1],
++        closed = firstVertex.equals(lastVertex);
++
++    // we could be more precise, but it would only save a negligible amount of space
++    this.makeRoomFor('line', len * 10);
++
++    if (len === 2 && closed) {
++        // console.warn('a line may not have coincident points');
++        return;
++    }
++
++    this.distance = 0;
++
++    var beginCap = cap,
++        endCap = closed ? 'butt' : cap,
++        startOfLine = true,
++        currentVertex, prevVertex, nextVertex, prevNormal, nextNormal, offsetA, offsetB;
++
++    // the last three vertices added
++    this.e1 = this.e2 = this.e3 = -1;
++
++    if (closed) {
++        currentVertex = vertices[len - 2];
++        nextNormal = firstVertex.sub(currentVertex)._unit()._perp();
++    }
++
++    for (var i = 0; i < len; i++) {
++
++        nextVertex = closed && i === len - 1 ?
++            vertices[1] : // if the line is closed, we treat the last vertex like the first
++            vertices[i + 1]; // just the next vertex
++
++        // if two consecutive vertices exist, skip the current one
++        if (nextVertex && vertices[i].equals(nextVertex)) continue;
++
++        if (nextNormal) prevNormal = nextNormal;
++        if (currentVertex) prevVertex = currentVertex;
++
++        currentVertex = vertices[i];
++
++        // Calculate the normal towards the next vertex in this line. In case
++        // there is no next vertex, pretend that the line is continuing straight,
++        // meaning that we are just using the previous normal.
++        nextNormal = nextVertex ? nextVertex.sub(currentVertex)._unit()._perp() : prevNormal;
++
++        // If we still don't have a previous normal, this is the beginning of a
++        // non-closed line, so we're doing a straight "join".
++        prevNormal = prevNormal || nextNormal;
++
++        // Determine the normal of the join extrusion. It is the angle bisector
++        // of the segments between the previous line and the next line.
++        var joinNormal = prevNormal.add(nextNormal)._unit();
++
++        /*  joinNormal     prevNormal
++         *             ↖      ↑
++         *                .________. prevVertex
++         *                |
++         * nextNormal  ←  |  currentVertex
++         *                |
++         *     nextVertex !
++         *
++         */
++
++        // Calculate the length of the miter (the ratio of the miter to the width).
++        // Find the cosine of the angle between the next and join normals
++        // using dot product. The inverse of that is the miter length.
++        var cosHalfAngle = joinNormal.x * nextNormal.x + joinNormal.y * nextNormal.y;
++        var miterLength = 1 / cosHalfAngle;
++
++        var isSharpCorner = cosHalfAngle < COS_HALF_SHARP_CORNER && prevVertex && nextVertex;
++
++        if (isSharpCorner && i > 0) {
++            var prevSegmentLength = currentVertex.dist(prevVertex);
++            if (prevSegmentLength > 2 * sharpCornerOffset) {
++                var newPrevVertex = currentVertex.sub(currentVertex.sub(prevVertex)._mult(sharpCornerOffset / prevSegmentLength)._round());
++                this.distance += newPrevVertex.dist(prevVertex);
++                this.addCurrentVertex(newPrevVertex, this.distance, prevNormal.mult(1), 0, 0, false);
++                prevVertex = newPrevVertex;
++            }
++        }
++
++        // The join if a middle vertex, otherwise the cap.
++        var middleVertex = prevVertex && nextVertex;
++        var currentJoin = middleVertex ? join : nextVertex ? beginCap : endCap;
++
++        if (middleVertex && currentJoin === 'round') {
++            if (miterLength < roundLimit) {
++                currentJoin = 'miter';
++            } else if (miterLength <= 2) {
++                currentJoin = 'fakeround';
++            }
++        }
+ 
+-    _handleErrors: function(validate, key, name, value) {
+-        return validateStyle.emitErrors(this, validate.call(validateStyle, {
+-            key: key,
+-            layerType: this.type,
+-            objectKey: name,
+-            value: value,
+-            styleSpec: styleSpec,
+-            // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407
+-            style: {glyphs: true, sprite: true}
+-        }));
+-    }
+-});
++        if (currentJoin === 'miter' && miterLength > miterLimit) {
++            currentJoin = 'bevel';
++        }
+ 
+-function getDeclarationValue(declaration) {
+-    return declaration.value;
+-}
++        if (currentJoin === 'bevel') {
++            // The maximum extrude length is 128 / 63 = 2 times the width of the line
++            // so if miterLength >= 2 we need to draw a different type of bevel where.
++            if (miterLength > 2) currentJoin = 'flipbevel';
+ 
+-},{"../util/evented":111,"../util/util":119,"./parse_color":59,"./style_declaration":61,"./style_layer/background_style_layer":64,"./style_layer/circle_style_layer":65,"./style_layer/fill_style_layer":66,"./style_layer/line_style_layer":67,"./style_layer/raster_style_layer":68,"./style_layer/symbol_style_layer":69,"./style_spec":70,"./style_transition":71,"./validate_style":72}],64:[function(require,module,exports){
+-'use strict';
++            // If the miterLength is really small and the line bevel wouldn't be visible,
++            // just draw a miter join to save a triangle.
++            if (miterLength < miterLimit) currentJoin = 'miter';
++        }
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++        // Calculate how far along the line the currentVertex is
++        if (prevVertex) this.distance += currentVertex.dist(prevVertex);
+ 
+-function BackgroundStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++        if (currentJoin === 'miter') {
+ 
+-module.exports = BackgroundStyleLayer;
++            joinNormal._mult(miterLength);
++            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
+ 
+-BackgroundStyleLayer.prototype = util.inherit(StyleLayer, {});
++        } else if (currentJoin === 'flipbevel') {
++            // miter is too big, flip the direction to make a beveled join
+ 
+-},{"../../util/util":119,"../style_layer":63}],65:[function(require,module,exports){
+-'use strict';
++            if (miterLength > 100) {
++                // Almost parallel lines
++                joinNormal = nextNormal.clone();
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++            } else {
++                var direction = prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x > 0 ? -1 : 1;
++                var bevelLength = miterLength * prevNormal.add(nextNormal).mag() / prevNormal.sub(nextNormal).mag();
++                joinNormal._perp()._mult(bevelLength * direction);
++            }
++            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
++            this.addCurrentVertex(currentVertex, this.distance, joinNormal.mult(-1), 0, 0, false);
+ 
+-function CircleStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++        } else if (currentJoin === 'bevel' || currentJoin === 'fakeround') {
++            var lineTurnsLeft = (prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x) > 0;
++            var offset = -Math.sqrt(miterLength * miterLength - 1);
++            if (lineTurnsLeft) {
++                offsetB = 0;
++                offsetA = offset;
++            } else {
++                offsetA = 0;
++                offsetB = offset;
++            }
+ 
+-module.exports = CircleStyleLayer;
++            // Close previous segment with a bevel
++            if (!startOfLine) {
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, offsetA, offsetB, false);
++            }
+ 
+-CircleStyleLayer.prototype = util.inherit(StyleLayer, {});
++            if (currentJoin === 'fakeround') {
++                // The join angle is sharp enough that a round join would be visible.
++                // Bevel joins fill the gap between segments with a single pie slice triangle.
++                // Create a round join by adding multiple pie slices. The join isn't actually round, but
++                // it looks like it is at the sizes we render lines at.
+ 
+-},{"../../util/util":119,"../style_layer":63}],66:[function(require,module,exports){
+-'use strict';
++                // Add more triangles for sharper angles.
++                // This math is just a good enough approximation. It isn't "correct".
++                var n = Math.floor((0.5 - (cosHalfAngle - 0.5)) * 8);
++                var approxFractionalJoinNormal;
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++                for (var m = 0; m < n; m++) {
++                    approxFractionalJoinNormal = nextNormal.mult((m + 1) / (n + 1))._add(prevNormal)._unit();
++                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
++                }
+ 
+-function FillStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++                this.addPieSliceVertex(currentVertex, this.distance, joinNormal, lineTurnsLeft);
+ 
+-module.exports = FillStyleLayer;
++                for (var k = n - 1; k >= 0; k--) {
++                    approxFractionalJoinNormal = prevNormal.mult((k + 1) / (n + 1))._add(nextNormal)._unit();
++                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
++                }
++            }
+ 
+-FillStyleLayer.prototype = util.inherit(StyleLayer, {});
++            // Start next segment
++            if (nextVertex) {
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -offsetA, -offsetB, false);
++            }
+ 
+-},{"../../util/util":119,"../style_layer":63}],67:[function(require,module,exports){
+-'use strict';
++        } else if (currentJoin === 'butt') {
++            if (!startOfLine) {
++                // Close previous segment with a butt
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
++            }
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++            // Start next segment with a butt
++            if (nextVertex) {
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
++            }
+ 
+-function LineStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++        } else if (currentJoin === 'square') {
+ 
+-module.exports = LineStyleLayer;
++            if (!startOfLine) {
++                // Close previous segment with a square cap
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, false);
+ 
+-LineStyleLayer.prototype = util.inherit(StyleLayer, {
++                // The segment is done. Unset vertices to disconnect segments.
++                this.e1 = this.e2 = -1;
++            }
+ 
+-    getPaintValue: function(name, globalProperties, featureProperties) {
+-        var value = StyleLayer.prototype.getPaintValue.apply(this, arguments);
++            // Start next segment
++            if (nextVertex) {
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, false);
++            }
+ 
+-        // If the line is dashed, scale the dash lengths by the line
+-        // width at the previous round zoom level.
+-        if (value && name === 'line-dasharray') {
+-            var flooredZoom = Math.floor(globalProperties.zoom);
+-            if (this._flooredZoom !== flooredZoom) {
+-                this._flooredZoom = flooredZoom;
+-                this._flooredLineWidth = this.getPaintValue('line-width', globalProperties, featureProperties);
++        } else if (currentJoin === 'round') {
++
++            if (!startOfLine) {
++                // Close previous segment with butt
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
++
++                // Add round cap or linejoin at end of segment
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, true);
++
++                // The segment is done. Unset vertices to disconnect segments.
++                this.e1 = this.e2 = -1;
+             }
+ 
+-            value.fromScale *= this._flooredLineWidth;
+-            value.toScale *= this._flooredLineWidth;
++
++            // Start next segment with a butt
++            if (nextVertex) {
++                // Add round cap before first segment
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, true);
++
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
++            }
+         }
+ 
+-        return value;
++        if (isSharpCorner && i < len - 1) {
++            var nextSegmentLength = currentVertex.dist(nextVertex);
++            if (nextSegmentLength > 2 * sharpCornerOffset) {
++                var newCurrentVertex = currentVertex.add(nextVertex.sub(currentVertex)._mult(sharpCornerOffset / nextSegmentLength)._round());
++                this.distance += newCurrentVertex.dist(currentVertex);
++                this.addCurrentVertex(newCurrentVertex, this.distance, nextNormal.mult(1), 0, 0, false);
++                currentVertex = newCurrentVertex;
++            }
++        }
++
++        startOfLine = false;
+     }
+-});
+ 
+-},{"../../util/util":119,"../style_layer":63}],68:[function(require,module,exports){
+-'use strict';
++};
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++/**
++ * Add two vertices to the buffers.
++ *
++ * @param {Object} currentVertex the line vertex to add buffer vertices for
++ * @param {number} distance the distance from the beginning of the line to the vertex
++ * @param {number} endLeft extrude to shift the left vertex along the line
++ * @param {number} endRight extrude to shift the left vertex along the line
++ * @param {boolean} round whether this is a round cap
++ * @private
++ */
++LineBucket.prototype.addCurrentVertex = function(currentVertex, distance, normal, endLeft, endRight, round) {
++    var tx = round ? 1 : 0;
++    var extrude;
++    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
++    var vertexArray = layoutArrays.vertex;
++    var elementArray = layoutArrays.element;
+ 
+-function RasterStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++    extrude = normal.clone();
++    if (endLeft) extrude._sub(normal.perp()._mult(endLeft));
++    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 0, endLeft, distance);
++    if (this.e1 >= 0 && this.e2 >= 0) {
++        elementArray.emplaceBack(this.e1, this.e2, this.e3);
++    }
++    this.e1 = this.e2;
++    this.e2 = this.e3;
+ 
+-module.exports = RasterStyleLayer;
++    extrude = normal.mult(-1);
++    if (endRight) extrude._sub(normal.perp()._mult(endRight));
++    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 1, -endRight, distance);
++    if (this.e1 >= 0 && this.e2 >= 0) {
++        elementArray.emplaceBack(this.e1, this.e2, this.e3);
++    }
++    this.e1 = this.e2;
++    this.e2 = this.e3;
+ 
+-RasterStyleLayer.prototype = util.inherit(StyleLayer, {});
++    // There is a maximum "distance along the line" that we can store in the buffers.
++    // When we get close to the distance, reset it to zero and add the vertex again with
++    // a distance of zero. The max distance is determined by the number of bits we allocate
++    // to `linesofar`.
++    if (distance > MAX_LINE_DISTANCE / 2) {
++        this.distance = 0;
++        this.addCurrentVertex(currentVertex, this.distance, normal, endLeft, endRight, round);
++    }
++};
++
++/**
++ * Add a single new vertex and a triangle using two previous vertices.
++ * This adds a pie slice triangle near a join to simulate round joins
++ *
++ * @param {Object} currentVertex the line vertex to add buffer vertices for
++ * @param {number} distance the distance from the beggining of the line to the vertex
++ * @param {Object} extrude the offset of the new vertex from the currentVertex
++ * @param {boolean} whether the line is turning left or right at this angle
++ * @private
++ */
++LineBucket.prototype.addPieSliceVertex = function(currentVertex, distance, extrude, lineTurnsLeft) {
++    var ty = lineTurnsLeft ? 1 : 0;
++    extrude = extrude.mult(lineTurnsLeft ? -1 : 1);
++    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
++    var vertexArray = layoutArrays.vertex;
++    var elementArray = layoutArrays.element;
++
++    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, 0, ty, 0, distance);
++
++    if (this.e1 >= 0 && this.e2 >= 0) {
++        elementArray.emplaceBack(this.e1, this.e2, this.e3);
++    }
++
++    if (lineTurnsLeft) {
++        this.e2 = this.e3;
++    } else {
++        this.e1 = this.e3;
++    }
++};
+ 
+-},{"../../util/util":119,"../style_layer":63}],69:[function(require,module,exports){
++},{"../../util/util":169,"../bucket":67,"../load_geometry":74}],71:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++var Point = require('point-geometry');
+ 
+-function SymbolStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++var Bucket = require('../bucket');
++var Anchor = require('../../symbol/anchor');
++var getAnchors = require('../../symbol/get_anchors');
++var resolveTokens = require('../../util/token');
++var Quads = require('../../symbol/quads');
++var Shaping = require('../../symbol/shaping');
++var resolveText = require('../../symbol/resolve_text');
++var mergeLines = require('../../symbol/mergelines');
++var clipLine = require('../../symbol/clip_line');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
++var CollisionFeature = require('../../symbol/collision_feature');
+ 
+-module.exports = SymbolStyleLayer;
++var shapeText = Shaping.shapeText;
++var shapeIcon = Shaping.shapeIcon;
++var getGlyphQuads = Quads.getGlyphQuads;
++var getIconQuads = Quads.getIconQuads;
+ 
+-SymbolStyleLayer.prototype = util.inherit(StyleLayer, {
++var EXTENT = Bucket.EXTENT;
+ 
+-    isHidden: function() {
+-        if (StyleLayer.prototype.isHidden.apply(this, arguments)) return true;
++module.exports = SymbolBucket;
+ 
+-        var isTextHidden = this.paint['text-opacity'] === 0 || !this.layout['text-field'];
+-        var isIconHidden = this.paint['icon-opacity'] === 0 || !this.layout['icon-image'];
+-        if (isTextHidden && isIconHidden) return true;
++function SymbolBucket(options) {
++    Bucket.apply(this, arguments);
++    this.showCollisionBoxes = options.showCollisionBoxes;
++    this.overscaling = options.overscaling;
++    this.collisionBoxArray = options.collisionBoxArray;
+ 
+-        return false;
+-    },
++    this.sdfIcons = options.sdfIcons;
++    this.iconsNeedLinear = options.iconsNeedLinear;
++    this.adjustedTextSize = options.adjustedTextSize;
++    this.adjustedIconSize = options.adjustedIconSize;
++    this.fontstack = options.fontstack;
++}
+ 
+-    getLayoutValue: function(name, globalProperties, featureProperties) {
+-        if (name === 'text-rotation-alignment' &&
+-                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
+-                !this.getLayoutProperty('text-rotation-alignment')) {
+-            return 'map';
+-        } else if (name === 'icon-rotation-alignment' &&
+-                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
+-                !this.getLayoutProperty('icon-rotation-alignment')) {
+-            return 'map';
+-        } else {
+-            return StyleLayer.prototype.getLayoutValue.apply(this, arguments);
+-        }
+-    }
++SymbolBucket.prototype = util.inherit(Bucket, {});
+ 
+-});
++SymbolBucket.prototype.serialize = function() {
++    var serialized = Bucket.prototype.serialize.apply(this);
++    serialized.sdfIcons = this.sdfIcons;
++    serialized.iconsNeedLinear = this.iconsNeedLinear;
++    serialized.adjustedTextSize = this.adjustedTextSize;
++    serialized.adjustedIconSize = this.adjustedIconSize;
++    serialized.fontstack = this.fontstack;
++    return serialized;
++};
+ 
+-},{"../../util/util":119,"../style_layer":63}],70:[function(require,module,exports){
+-'use strict';
++var programAttributes = [{
++    name: 'a_pos',
++    components: 2,
++    type: 'Int16'
++}, {
++    name: 'a_offset',
++    components: 2,
++    type: 'Int16'
++}, {
++    name: 'a_data1',
++    components: 4,
++    type: 'Uint8'
++}, {
++    name: 'a_data2',
++    components: 2,
++    type: 'Uint8'
++}];
+ 
+-module.exports = require('mapbox-gl-style-spec/reference/latest');
++function addVertex(array, x, y, ox, oy, tx, ty, minzoom, maxzoom, labelminzoom) {
++    return array.emplaceBack(
++            // pos
++            x,
++            y,
++            // offset
++            Math.round(ox * 64), // use 1/64 pixels for placement
++            Math.round(oy * 64),
++            // data1
++            tx / 4,                   // tex
++            ty / 4,                   // tex
++            (labelminzoom || 0) * 10, // labelminzoom
++            0,
++            // data2
++            (minzoom || 0) * 10,               // minzoom
++            Math.min(maxzoom || 25, 25) * 10); // minzoom
++}
+ 
+-},{"mapbox-gl-style-spec/reference/latest":167}],71:[function(require,module,exports){
+-'use strict';
++SymbolBucket.prototype.addCollisionBoxVertex = function(vertexArray, point, extrude, maxZoom, placementZoom) {
++    return vertexArray.emplaceBack(
++            // pos
++            point.x,
++            point.y,
++            // extrude
++            Math.round(extrude.x),
++            Math.round(extrude.y),
++            // data
++            maxZoom * 10,
++            placementZoom * 10);
++};
+ 
+-var util = require('../util/util');
+-var interpolate = require('../util/interpolate');
++SymbolBucket.prototype.programInterfaces = {
+ 
+-module.exports = StyleTransition;
++    glyph: {
++        vertexBuffer: true,
++        elementBuffer: true,
++        layoutAttributes: programAttributes
++    },
+ 
+-/*
+- * Represents a transition between two declarations
+- */
+-function StyleTransition(declaration, oldTransition, value) {
++    icon: {
++        vertexBuffer: true,
++        elementBuffer: true,
++        layoutAttributes: programAttributes
++    },
+ 
+-    this.declaration = declaration;
+-    this.startTime = this.endTime = (new Date()).getTime();
++    collisionBox: {
++        vertexBuffer: true,
+ 
+-    var type = declaration.type;
+-    if ((type === 'string' || type === 'array') && declaration.transitionable) {
+-        this.interp = interpZoomTransitioned;
+-    } else {
+-        this.interp = interpolate[type];
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }, {
++            name: 'a_extrude',
++            components: 2,
++            type: 'Int16'
++        }, {
++            name: 'a_data',
++            components: 2,
++            type: 'Uint8'
++        }]
+     }
++};
+ 
+-    this.oldTransition = oldTransition;
+-    this.duration = value.duration || 0;
+-    this.delay = value.delay || 0;
++SymbolBucket.prototype.populateBuffers = function(collisionTile, stacks, icons) {
+ 
+-    if (!this.instant()) {
+-        this.endTime = this.startTime + this.duration + this.delay;
+-        this.ease = util.easeCubicInOut;
+-    }
++    // To reduce the number of labels that jump around when zooming we need
++    // to use a text-size value that is the same for all zoom levels.
++    // This calculates text-size at a high zoom level so that all tiles can
++    // use the same value when calculating anchor positions.
++    var zoomHistory = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
++    this.adjustedTextMaxSize = this.layer.getLayoutValue('text-size', {zoom: 18, zoomHistory: zoomHistory});
++    this.adjustedTextSize = this.layer.getLayoutValue('text-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
++    this.adjustedIconMaxSize = this.layer.getLayoutValue('icon-size', {zoom: 18, zoomHistory: zoomHistory});
++    this.adjustedIconSize = this.layer.getLayoutValue('icon-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
+ 
+-    if (oldTransition && oldTransition.endTime <= this.startTime) {
+-        // Old transition is done running, so we can
+-        // delete its reference to its old transition.
++    var tileSize = 512 * this.overscaling;
++    this.tilePixelRatio = EXTENT / tileSize;
++    this.compareText = {};
++    this.symbolInstances = [];
++    this.iconsNeedLinear = false;
+ 
+-        delete oldTransition.oldTransition;
+-    }
+-}
++    var layout = this.layer.layout;
++    var features = this.features;
++    var textFeatures = this.textFeatures;
+ 
+-StyleTransition.prototype.instant = function() {
+-    return !this.oldTransition || !this.interp || (this.duration === 0 && this.delay === 0);
+-};
++    var horizontalAlign = 0.5,
++        verticalAlign = 0.5;
+ 
+-/*
+- * Return the value of the transitioning property at zoom level `z` and optional time `t`
+- */
+-StyleTransition.prototype.calculate = function(globalProperties, featureProperties) {
+-    var value = this.declaration.calculate(
+-        util.extend({}, globalProperties, {duration: this.duration}),
+-        featureProperties
+-    );
++    switch (layout['text-anchor']) {
++    case 'right':
++    case 'top-right':
++    case 'bottom-right':
++        horizontalAlign = 1;
++        break;
++    case 'left':
++    case 'top-left':
++    case 'bottom-left':
++        horizontalAlign = 0;
++        break;
++    }
+ 
+-    if (this.instant()) return value;
++    switch (layout['text-anchor']) {
++    case 'bottom':
++    case 'bottom-right':
++    case 'bottom-left':
++        verticalAlign = 1;
++        break;
++    case 'top':
++    case 'top-right':
++    case 'top-left':
++        verticalAlign = 0;
++        break;
++    }
+ 
+-    var t = globalProperties.time || Date.now();
++    var justify = layout['text-justify'] === 'right' ? 1 :
++        layout['text-justify'] === 'left' ? 0 :
++        0.5;
+ 
+-    if (t < this.endTime) {
+-        var oldValue = this.oldTransition.calculate(
+-            util.extend({}, globalProperties, {time: this.startTime}),
+-            featureProperties
+-        );
+-        var eased = this.ease((t - this.startTime - this.delay) / this.duration);
+-        value = this.interp(oldValue, value, eased);
++    var oneEm = 24;
++    var lineHeight = layout['text-line-height'] * oneEm;
++    var maxWidth = layout['symbol-placement'] !== 'line' ? layout['text-max-width'] * oneEm : 0;
++    var spacing = layout['text-letter-spacing'] * oneEm;
++    var textOffset = [layout['text-offset'][0] * oneEm, layout['text-offset'][1] * oneEm];
++    var fontstack = this.fontstack = layout['text-font'].join(',');
++
++    var geometries = [];
++    for (var g = 0; g < features.length; g++) {
++        geometries.push(loadGeometry(features[g]));
+     }
+ 
+-    return value;
++    if (layout['symbol-placement'] === 'line') {
++        // Merge adjacent lines with the same text to improve labelling.
++        // It's better to place labels on one long line than on many short segments.
++        var merged = mergeLines(features, textFeatures, geometries);
++
++        geometries = merged.geometries;
++        features = merged.features;
++        textFeatures = merged.textFeatures;
++    }
+ 
+-};
++    var shapedText, shapedIcon;
+ 
+-function interpZoomTransitioned(from, to, t) {
+-    return {
+-        from: from.to,
+-        fromScale: from.toScale,
+-        to: to.to,
+-        toScale: to.toScale,
+-        t: t
+-    };
+-}
++    for (var k = 0; k < features.length; k++) {
++        if (!geometries[k]) continue;
+ 
+-},{"../util/interpolate":113,"../util/util":119}],72:[function(require,module,exports){
+-'use strict';
++        if (textFeatures[k]) {
++            shapedText = shapeText(textFeatures[k], stacks[fontstack], maxWidth,
++                    lineHeight, horizontalAlign, verticalAlign, justify, spacing, textOffset);
++        } else {
++            shapedText = null;
++        }
+ 
+-module.exports = require('mapbox-gl-style-spec/lib/validate_style.min');
++        if (layout['icon-image']) {
++            var iconName = resolveTokens(features[k].properties, layout['icon-image']);
++            var image = icons[iconName];
++            shapedIcon = shapeIcon(image, layout);
+ 
+-module.exports.emitErrors = function throwErrors(emitter, errors) {
+-    if (errors && errors.length) {
+-        for (var i = 0; i < errors.length; i++) {
+-            emitter.fire('error', { error: new Error(errors[i].message) });
++            if (image) {
++                if (this.sdfIcons === undefined) {
++                    this.sdfIcons = image.sdf;
++                } else if (this.sdfIcons !== image.sdf) {
++                    console.warn('Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer');
++                }
++                if (image.pixelRatio !== 1) {
++                    this.iconsNeedLinear = true;
++                }
++            }
++        } else {
++            shapedIcon = null;
+         }
+-        return true;
+-    } else {
+-        return false;
+-    }
+-};
+ 
+-module.exports.throwErrors = function throwErrors(emitter, errors) {
+-    if (errors) {
+-        for (var i = 0; i < errors.length; i++) {
+-            throw new Error(errors[i].message);
++        if (shapedText || shapedIcon) {
++            this.addFeature(geometries[k], shapedText, shapedIcon, features[k].index);
+         }
+     }
+-};
+ 
+-},{"mapbox-gl-style-spec/lib/validate_style.min":166}],73:[function(require,module,exports){
+-'use strict';
++    this.placeFeatures(collisionTile, this.showCollisionBoxes);
+ 
+-var Point = require('point-geometry');
++    this.trimArrays();
++};
+ 
+-module.exports = Anchor;
++SymbolBucket.prototype.addFeature = function(lines, shapedText, shapedIcon, featureIndex) {
++    var layout = this.layer.layout;
+ 
+-function Anchor(x, y, angle, segment) {
+-    this.x = x;
+-    this.y = y;
+-    this.angle = angle;
++    var glyphSize = 24;
+ 
+-    if (segment !== undefined) {
+-        this.segment = segment;
+-    }
+-}
++    var fontScale = this.adjustedTextSize / glyphSize,
++        textMaxSize = this.adjustedTextMaxSize !== undefined ? this.adjustedTextMaxSize : this.adjustedTextSize,
++        textBoxScale = this.tilePixelRatio * fontScale,
++        textMaxBoxScale = this.tilePixelRatio * textMaxSize / glyphSize,
++        iconBoxScale = this.tilePixelRatio * this.adjustedIconSize,
++        symbolMinDistance = this.tilePixelRatio * layout['symbol-spacing'],
++        avoidEdges = layout['symbol-avoid-edges'],
++        textPadding = layout['text-padding'] * this.tilePixelRatio,
++        iconPadding = layout['icon-padding'] * this.tilePixelRatio,
++        textMaxAngle = layout['text-max-angle'] / 180 * Math.PI,
++        textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
++        iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
++        mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
++            layout['text-ignore-placement'] || layout['icon-ignore-placement'],
++        isLine = layout['symbol-placement'] === 'line',
++        textRepeatDistance = symbolMinDistance / 2;
+ 
+-Anchor.prototype = Object.create(Point.prototype);
++    if (isLine) {
++        lines = clipLine(lines, 0, 0, EXTENT, EXTENT);
++    }
+ 
+-Anchor.prototype.clone = function() {
+-    return new Anchor(this.x, this.y, this.angle, this.segment);
+-};
++    for (var i = 0; i < lines.length; i++) {
++        var line = lines[i];
+ 
+-},{"point-geometry":174}],74:[function(require,module,exports){
+-'use strict';
++        // Calculate the anchor points around which you want to place labels
++        var anchors;
++        if (isLine) {
++            anchors = getAnchors(
++                line,
++                symbolMinDistance,
++                textMaxAngle,
++                shapedText,
++                shapedIcon,
++                glyphSize,
++                textMaxBoxScale,
++                this.overscaling,
++                EXTENT
++            );
++        } else {
++            anchors = [ new Anchor(line[0].x, line[0].y, 0) ];
++        }
+ 
+-module.exports = checkMaxAngle;
++        // For each potential label, create the placement features used to check for collisions, and the quads use for rendering.
++        for (var j = 0, len = anchors.length; j < len; j++) {
++            var anchor = anchors[j];
+ 
+-/**
+- * Labels placed around really sharp angles aren't readable. Check if any
+- * part of the potential label has a combined angle that is too big.
+- *
+- * @param {Array<Point>} line
+- * @param {Anchor} anchor The point on the line around which the label is anchored.
+- * @param {number} labelLength The length of the label in geometry units.
+- * @param {number} windowSize The check fails if the combined angles within a part of the line that is `windowSize` long is too big.
+- * @param {number} maxAngle The maximum combined angle that any window along the label is allowed to have.
+- *
+- * @returns {boolean} whether the label should be placed
+- * @private
+- */
+-function checkMaxAngle(line, anchor, labelLength, windowSize, maxAngle) {
++            if (shapedText && isLine) {
++                if (this.anchorIsTooClose(shapedText.text, textRepeatDistance, anchor)) {
++                    continue;
++                }
++            }
+ 
+-    // horizontal labels always pass
+-    if (anchor.segment === undefined) return true;
++            var inside = !(anchor.x < 0 || anchor.x > EXTENT || anchor.y < 0 || anchor.y > EXTENT);
+ 
+-    var p = anchor;
+-    var index = anchor.segment + 1;
+-    var anchorDistance = 0;
++            if (avoidEdges && !inside) continue;
+ 
+-    // move backwards along the line to the first segment the label appears on
+-    while (anchorDistance > -labelLength / 2) {
+-        index--;
++            // Normally symbol layers are drawn across tile boundaries. Only symbols
++            // with their anchors within the tile boundaries are added to the buffers
++            // to prevent symbols from being drawn twice.
++            //
++            // Symbols in layers with overlap are sorted in the y direction so that
++            // symbols lower on the canvas are drawn on top of symbols near the top.
++            // To preserve this order across tile boundaries these symbols can't
++            // be drawn across tile boundaries. Instead they need to be included in
++            // the buffers for both tiles and clipped to tile boundaries at draw time.
++            var addToBuffers = inside || mayOverlap;
+ 
+-        // there isn't enough room for the label after the beginning of the line
+-        if (index < 0) return false;
++            this.symbolInstances.push(new SymbolInstance(anchor, line, shapedText, shapedIcon, layout,
++                        addToBuffers, this.symbolInstances.length, this.collisionBoxArray, featureIndex, this.sourceLayerIndex, this.index,
++                        textBoxScale, textPadding, textAlongLine,
++                        iconBoxScale, iconPadding, iconAlongLine));
++        }
++    }
++};
+ 
+-        anchorDistance -= line[index].dist(p);
+-        p = line[index];
++SymbolBucket.prototype.anchorIsTooClose = function(text, repeatDistance, anchor) {
++    var compareText = this.compareText;
++    if (!(text in compareText)) {
++        compareText[text] = [];
++    } else {
++        var otherAnchors = compareText[text];
++        for (var k = otherAnchors.length - 1; k >= 0; k--) {
++            if (anchor.dist(otherAnchors[k]) < repeatDistance) {
++                // If it's within repeatDistance of one anchor, stop looking
++                return true;
++            }
++        }
+     }
++    // If anchor is not within repeatDistance of any other anchor, add to array
++    compareText[text].push(anchor);
++    return false;
++};
+ 
+-    anchorDistance += line[index].dist(line[index + 1]);
+-    index++;
++SymbolBucket.prototype.placeFeatures = function(collisionTile, showCollisionBoxes) {
++    this.recalculateStyleLayers();
+ 
+-    // store recent corners and their total angle difference
+-    var recentCorners = [];
+-    var recentAngleDelta = 0;
++    // Calculate which labels can be shown and when they can be shown and
++    // create the bufers used for rendering.
+ 
+-    // move forwards by the length of the label and check angles along the way
+-    while (anchorDistance < labelLength / 2) {
+-        var prev = line[index - 1];
+-        var current = line[index];
+-        var next = line[index + 1];
++    this.createArrays();
+ 
+-        // there isn't enough room for the label before the end of the line
+-        if (!next) return false;
++    var layout = this.layer.layout;
+ 
+-        var angleDelta = prev.angleTo(current) - current.angleTo(next);
+-        // restrict angle to -pi..pi range
+-        angleDelta = Math.abs(((angleDelta + 3 * Math.PI) % (Math.PI * 2)) - Math.PI);
++    var maxScale = collisionTile.maxScale;
+ 
+-        recentCorners.push({
+-            distance: anchorDistance,
+-            angleDelta: angleDelta
+-        });
+-        recentAngleDelta += angleDelta;
++    var textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
++    var iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
+ 
+-        // remove corners that are far enough away from the list of recent anchors
+-        while (anchorDistance - recentCorners[0].distance > windowSize) {
+-            recentAngleDelta -= recentCorners.shift().angleDelta;
+-        }
++    var mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
++        layout['text-ignore-placement'] || layout['icon-ignore-placement'];
+ 
+-        // the sum of angles within the window area exceeds the maximum allowed value. check fails.
+-        if (recentAngleDelta > maxAngle) return false;
++    // Sort symbols by their y position on the canvas so that they lower symbols
++    // are drawn on top of higher symbols.
++    // Don't sort symbols that won't overlap because it isn't necessary and
++    // because it causes more labels to pop in and out when rotating.
++    if (mayOverlap) {
++        var angle = collisionTile.angle;
++        var sin = Math.sin(angle),
++            cos = Math.cos(angle);
+ 
+-        index++;
+-        anchorDistance += current.dist(next);
++        this.symbolInstances.sort(function(a, b) {
++            var aRotated = (sin * a.x + cos * a.y) | 0;
++            var bRotated = (sin * b.x + cos * b.y) | 0;
++            return (aRotated - bRotated) || (b.index - a.index);
++        });
+     }
+ 
+-    // no part of the line had an angle greater than the maximum allowed. check passes.
+-    return true;
+-}
++    for (var p = 0; p < this.symbolInstances.length; p++) {
++        var symbolInstance = this.symbolInstances[p];
++        var hasText = symbolInstance.hasText;
++        var hasIcon = symbolInstance.hasIcon;
+ 
+-},{}],75:[function(require,module,exports){
+-'use strict';
++        var iconWithoutText = layout['text-optional'] || !hasText,
++            textWithoutIcon = layout['icon-optional'] || !hasIcon;
+ 
+-var Point = require('point-geometry');
+ 
+-module.exports = clipLine;
++        // Calculate the scales at which the text and icon can be placed without collision.
+ 
+-/**
+- * Returns the part of a multiline that intersects with the provided rectangular box.
+- *
+- * @param {Array<Array<Point>>} lines
+- * @param {number} x1 the left edge of the box
+- * @param {number} y1 the top edge of the box
+- * @param {number} x2 the right edge of the box
+- * @param {number} y2 the bottom edge of the box
+- * @returns {Array<Array<Point>>} lines
+- * @private
+- */
+-function clipLine(lines, x1, y1, x2, y2) {
+-    var clippedLines = [];
++        var glyphScale = hasText ?
++            collisionTile.placeCollisionFeature(symbolInstance.textCollisionFeature,
++                    layout['text-allow-overlap'], layout['symbol-avoid-edges']) :
++            collisionTile.minScale;
+ 
+-    for (var l = 0; l < lines.length; l++) {
+-        var line = lines[l];
+-        var clippedLine;
++        var iconScale = hasIcon ?
++            collisionTile.placeCollisionFeature(symbolInstance.iconCollisionFeature,
++                    layout['icon-allow-overlap'], layout['symbol-avoid-edges']) :
++            collisionTile.minScale;
+ 
+-        for (var i = 0; i < line.length - 1; i++) {
+-            var p0 = line[i];
+-            var p1 = line[i + 1];
+ 
++        // Combine the scales for icons and text.
+ 
+-            if (p0.x < x1 && p1.x < x1) {
+-                continue;
+-            } else if (p0.x < x1) {
+-                p0 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
+-            } else if (p1.x < x1) {
+-                p1 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
+-            }
++        if (!iconWithoutText && !textWithoutIcon) {
++            iconScale = glyphScale = Math.max(iconScale, glyphScale);
++        } else if (!textWithoutIcon && glyphScale) {
++            glyphScale = Math.max(iconScale, glyphScale);
++        } else if (!iconWithoutText && iconScale) {
++            iconScale = Math.max(iconScale, glyphScale);
++        }
+ 
+-            if (p0.y < y1 && p1.y < y1) {
+-                continue;
+-            } else if (p0.y < y1) {
+-                p0 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
+-            } else if (p1.y < y1) {
+-                p1 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
+-            }
+ 
+-            if (p0.x >= x2 && p1.x >= x2) {
+-                continue;
+-            } else if (p0.x >= x2) {
+-                p0 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
+-            } else if (p1.x >= x2) {
+-                p1 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
+-            }
++        // Insert final placement into collision tree and add glyphs/icons to buffers
+ 
+-            if (p0.y >= y2 && p1.y >= y2) {
+-                continue;
+-            } else if (p0.y >= y2) {
+-                p0 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
+-            } else if (p1.y >= y2) {
+-                p1 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
++        if (hasText) {
++            collisionTile.insertCollisionFeature(symbolInstance.textCollisionFeature, glyphScale, layout['text-ignore-placement']);
++            if (glyphScale <= maxScale) {
++                this.addSymbols('glyph', symbolInstance.glyphQuads, glyphScale, layout['text-keep-upright'], textAlongLine, collisionTile.angle);
+             }
++        }
+ 
+-            if (!clippedLine || !p0.equals(clippedLine[clippedLine.length - 1])) {
+-                clippedLine = [p0];
+-                clippedLines.push(clippedLine);
++        if (hasIcon) {
++            collisionTile.insertCollisionFeature(symbolInstance.iconCollisionFeature, iconScale, layout['icon-ignore-placement']);
++            if (iconScale <= maxScale) {
++                this.addSymbols('icon', symbolInstance.iconQuads, iconScale, layout['icon-keep-upright'], iconAlongLine, collisionTile.angle);
+             }
+-
+-            clippedLine.push(p1);
+         }
+-    }
+-
+-    return clippedLines;
+-}
+-
+-},{"point-geometry":174}],76:[function(require,module,exports){
+-'use strict';
+-
+-var StructArrayType = require('../util/struct_array');
+-var util = require('../util/util');
+-var Point = require('point-geometry');
+-
+-/**
+- * A collision box represents an area of the map that that is covered by a
+- * label. CollisionFeature uses one or more of these collision boxes to
+- * represent all the area covered by a single label. They are used to
+- * prevent collisions between labels.
+- *
+- * A collision box actually represents a 3d volume. The first two dimensions,
+- * x and y, are specified with `anchor` along with `x1`, `y1`, `x2`, `y2`.
+- * The third dimension, zoom, is limited by `maxScale` which determines
+- * how far in the z dimensions the box extends.
+- *
+- * As you zoom in on a map, all points on the map get further and further apart
+- * but labels stay roughly the same size. Labels cover less real world area on
+- * the map at higher zoom levels than they do at lower zoom levels. This is why
+- * areas are are represented with an anchor point and offsets from that point
+- * instead of just using four absolute points.
+- *
+- * Line labels are represented by a set of these boxes spaced out along a line.
+- * When you zoom in, line labels cover less real world distance along the line
+- * than they used to. Collision boxes near the edges that used to cover label
+- * no longer do. If a box doesn't cover the label anymore it should be ignored
+- * when doing collision checks. `maxScale` is how much you can scale the map
+- * before the label isn't within the box anymore.
+- * For example
+- * lower zoom:
+- * https://cloud.githubusercontent.com/assets/1421652/8060094/4d975f76-0e91-11e5-84b1-4edeb30a5875.png
+- * slightly higher zoom:
+- * https://cloud.githubusercontent.com/assets/1421652/8060061/26ae1c38-0e91-11e5-8c5a-9f380bf29f0a.png
+- * In the zoomed in image the two grey boxes on either side don't cover the
+- * label anymore. Their maxScale is smaller than the current scale.
+- *
+- *
+- * @class CollisionBoxArray
+- * @private
+- */
+-
+-var CollisionBoxArray = module.exports = new StructArrayType({
+-    members: [
+-        // the box is centered around the anchor point
+-        { type: 'Int16', name: 'anchorPointX' },
+-        { type: 'Int16', name: 'anchorPointY' },
+ 
+-        // distances to the edges from the anchor
+-        { type: 'Int16', name: 'x1' },
+-        { type: 'Int16', name: 'y1' },
+-        { type: 'Int16', name: 'x2' },
+-        { type: 'Int16', name: 'y2' },
+-
+-        // the box is only valid for scales < maxScale.
+-        // The box does not block other boxes at scales >= maxScale;
+-        { type: 'Float32', name: 'maxScale' },
++    }
+ 
+-        // the index of the feature in the original vectortile
+-        { type: 'Uint32', name: 'featureIndex' },
+-        // the source layer the feature appears in
+-        { type: 'Uint16', name: 'sourceLayerIndex' },
+-        // the bucket the feature appears in
+-        { type: 'Uint16', name: 'bucketIndex' },
++    if (showCollisionBoxes) this.addToDebugBuffers(collisionTile);
++};
+ 
+-        // rotated and scaled bbox used for indexing
+-        { type: 'Int16', name: 'bbox0' },
+-        { type: 'Int16', name: 'bbox1' },
+-        { type: 'Int16', name: 'bbox2' },
+-        { type: 'Int16', name: 'bbox3' },
++SymbolBucket.prototype.addSymbols = function(programName, quads, scale, keepUpright, alongLine, placementAngle) {
+ 
+-        { type: 'Float32', name: 'placementScale' }
+-    ]});
++    var group = this.makeRoomFor(programName, 4 * quads.length);
+ 
+-util.extendAll(CollisionBoxArray.prototype.StructType.prototype, {
+-    get anchorPoint() {
+-        return new Point(this.anchorPointX, this.anchorPointY);
+-    }
+-});
++    var elementArray = group.layout.element;
++    var vertexArray = group.layout.vertex;
+ 
+-},{"../util/struct_array":117,"../util/util":119,"point-geometry":174}],77:[function(require,module,exports){
+-'use strict';
++    var zoom = this.zoom;
++    var placementZoom = Math.max(Math.log(scale) / Math.LN2 + zoom, 0);
+ 
+-module.exports = CollisionFeature;
++    for (var k = 0; k < quads.length; k++) {
+ 
+-/**
+- * A CollisionFeature represents the area of the tile covered by a single label.
+- * It is used with CollisionTile to check if the label overlaps with any
+- * previous labels. A CollisionFeature is mostly just a set of CollisionBox
+- * objects.
+- *
+- * @class CollisionFeature
+- * @param {Array<Point>} line The geometry the label is placed on.
+- * @param {Anchor} anchor The point along the line around which the label is anchored.
+- * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
+- * @param {Array<string>} layerIDs The IDs of the layers that this CollisionFeature is a part of.
+- * @param {Object} shaped The text or icon shaping results.
+- * @param {number} boxScale A magic number used to convert from glyph metrics units to geometry units.
+- * @param {number} padding The amount of padding to add around the label edges.
+- * @param {boolean} alignLine Whether the label is aligned with the line or the viewport.
+- *
+- * @private
+- */
+-function CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex, shaped, boxScale, padding, alignLine, straight) {
++        var symbol = quads[k],
++            angle = symbol.angle;
+ 
+-    var y1 = shaped.top * boxScale - padding;
+-    var y2 = shaped.bottom * boxScale + padding;
+-    var x1 = shaped.left * boxScale - padding;
+-    var x2 = shaped.right * boxScale + padding;
++        // drop upside down versions of glyphs
++        var a = (angle + placementAngle + Math.PI) % (Math.PI * 2);
++        if (keepUpright && alongLine && (a <= Math.PI / 2 || a > Math.PI * 3 / 2)) continue;
+ 
+-    this.boxStartIndex = collisionBoxArray.length;
++        var tl = symbol.tl,
++            tr = symbol.tr,
++            bl = symbol.bl,
++            br = symbol.br,
++            tex = symbol.tex,
++            anchorPoint = symbol.anchorPoint,
+ 
+-    if (alignLine) {
++            minZoom = Math.max(zoom + Math.log(symbol.minScale) / Math.LN2, placementZoom),
++            maxZoom = Math.min(zoom + Math.log(symbol.maxScale) / Math.LN2, 25);
+ 
+-        var height = y2 - y1;
+-        var length = x2 - x1;
++        if (maxZoom <= minZoom) continue;
+ 
+-        if (height > 0) {
+-            // set minimum box height to avoid very many small labels
+-            height = Math.max(10 * boxScale, height);
++        // Lower min zoom so that while fading out the label it can be shown outside of collision-free zoom levels
++        if (minZoom === placementZoom) minZoom = 0;
+ 
+-            if (straight) {
+-                // used for icon labels that are aligned with the line, but don't curve along it
+-                var vector = line[anchor.segment + 1].sub(line[anchor.segment])._unit()._mult(length);
+-                var straightLine = [anchor.sub(vector), anchor.add(vector)];
+-                this._addLineCollisionBoxes(collisionBoxArray, straightLine, anchor, 0, length, height, featureIndex, sourceLayerIndex, bucketIndex);
+-            } else {
+-                // used for text labels that curve along a line
+-                this._addLineCollisionBoxes(collisionBoxArray, line, anchor, anchor.segment, length, height, featureIndex, sourceLayerIndex, bucketIndex);
+-            }
+-        }
++        var index = addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tl.x, tl.y, tex.x, tex.y, minZoom, maxZoom, placementZoom);
++        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tr.x, tr.y, tex.x + tex.w, tex.y, minZoom, maxZoom, placementZoom);
++        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, bl.x, bl.y, tex.x, tex.y + tex.h, minZoom, maxZoom, placementZoom);
++        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, br.x, br.y, tex.x + tex.w, tex.y + tex.h, minZoom, maxZoom, placementZoom);
+ 
+-    } else {
+-        collisionBoxArray.emplaceBack(anchor.x, anchor.y, x1, y1, x2, y2, Infinity, featureIndex, sourceLayerIndex, bucketIndex,
+-                0, 0, 0, 0, 0);
++        elementArray.emplaceBack(index, index + 1, index + 2);
++        elementArray.emplaceBack(index + 1, index + 2, index + 3);
+     }
+ 
+-    this.boxEndIndex = collisionBoxArray.length;
+-}
+-
+-/**
+- * Create a set of CollisionBox objects for a line.
+- *
+- * @param {Array<Point>} line
+- * @param {Anchor} anchor
+- * @param {number} labelLength The length of the label in geometry units.
+- * @param {Anchor} anchor The point along the line around which the label is anchored.
+- * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
+- * @param {number} boxSize The size of the collision boxes that will be created.
+- *
+- * @private
+- */
+-CollisionFeature.prototype._addLineCollisionBoxes = function(collisionBoxArray, line, anchor, segment, labelLength, boxSize, featureIndex, sourceLayerIndex, bucketIndex) {
+-    var step = boxSize / 2;
+-    var nBoxes = Math.floor(labelLength / step);
+-
+-    // offset the center of the first box by half a box so that the edge of the
+-    // box is at the edge of the label.
+-    var firstBoxOffset = -boxSize / 2;
++};
+ 
+-    var bboxes = this.boxes;
++SymbolBucket.prototype.updateIcons = function(icons) {
++    this.recalculateStyleLayers();
++    var iconValue = this.layer.layout['icon-image'];
++    if (!iconValue) return;
+ 
+-    var p = anchor;
+-    var index = segment + 1;
+-    var anchorDistance = firstBoxOffset;
++    for (var i = 0; i < this.features.length; i++) {
++        var iconName = resolveTokens(this.features[i].properties, iconValue);
++        if (iconName)
++            icons[iconName] = true;
++    }
++};
+ 
+-    // move backwards along the line to the first segment the label appears on
+-    do {
+-        index--;
++SymbolBucket.prototype.updateFont = function(stacks) {
++    this.recalculateStyleLayers();
++    var fontName = this.layer.layout['text-font'],
++        stack = stacks[fontName] = stacks[fontName] || {};
+ 
+-        // there isn't enough room for the label after the beginning of the line
+-        // checkMaxAngle should have already caught this
+-        if (index < 0) return bboxes;
++    this.textFeatures = resolveText(this.features, this.layer.layout, stack);
++};
+ 
+-        anchorDistance -= line[index].dist(p);
+-        p = line[index];
+-    } while (anchorDistance > -labelLength / 2);
++SymbolBucket.prototype.addToDebugBuffers = function(collisionTile) {
++    var group = this.makeRoomFor('collisionBox', 0);
++    var vertexArray = group.layout.vertex;
++    var angle = -collisionTile.angle;
++    var yStretch = collisionTile.yStretch;
+ 
+-    var segmentLength = line[index].dist(line[index + 1]);
++    for (var j = 0; j < this.symbolInstances.length; j++) {
++        for (var i = 0; i < 2; i++) {
++            var feature = this.symbolInstances[j][i === 0 ? 'textCollisionFeature' : 'iconCollisionFeature'];
++            if (!feature) continue;
+ 
+-    for (var i = 0; i < nBoxes; i++) {
+-        // the distance the box will be from the anchor
+-        var boxDistanceToAnchor = -labelLength / 2 + i * step;
++            for (var b = feature.boxStartIndex; b < feature.boxEndIndex; b++) {
++                var box = this.collisionBoxArray.get(b);
++                var anchorPoint = box.anchorPoint;
+ 
+-        // the box is not on the current segment. Move to the next segment.
+-        while (anchorDistance + segmentLength < boxDistanceToAnchor) {
+-            anchorDistance += segmentLength;
+-            index++;
++                var tl = new Point(box.x1, box.y1 * yStretch)._rotate(angle);
++                var tr = new Point(box.x2, box.y1 * yStretch)._rotate(angle);
++                var bl = new Point(box.x1, box.y2 * yStretch)._rotate(angle);
++                var br = new Point(box.x2, box.y2 * yStretch)._rotate(angle);
+ 
+-            // There isn't enough room before the end of the line.
+-            if (index + 1 >= line.length) return bboxes;
++                var maxZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.maxScale) / Math.LN2));
++                var placementZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.placementScale) / Math.LN2));
+ 
+-            segmentLength = line[index].dist(line[index + 1]);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
++            }
+         }
++    }
++};
+ 
+-        // the distance the box will be from the beginning of the segment
+-        var segmentBoxDistance = boxDistanceToAnchor - anchorDistance;
+-
+-        var p0 = line[index];
+-        var p1 = line[index + 1];
+-        var boxAnchorPoint = p1.sub(p0)._unit()._mult(segmentBoxDistance)._add(p0)._round();
++function SymbolInstance(anchor, line, shapedText, shapedIcon, layout, addToBuffers, index, collisionBoxArray, featureIndex, sourceLayerIndex, bucketIndex,
++                        textBoxScale, textPadding, textAlongLine,
++                        iconBoxScale, iconPadding, iconAlongLine) {
+ 
+-        var distanceToInnerEdge = Math.max(Math.abs(boxDistanceToAnchor - firstBoxOffset) - step / 2, 0);
+-        var maxScale = labelLength / 2 / distanceToInnerEdge;
++    this.x = anchor.x;
++    this.y = anchor.y;
++    this.index = index;
++    this.hasText = !!shapedText;
++    this.hasIcon = !!shapedIcon;
+ 
+-        collisionBoxArray.emplaceBack(boxAnchorPoint.x, boxAnchorPoint.y,
+-                -boxSize / 2, -boxSize / 2, boxSize / 2, boxSize / 2, maxScale,
+-                featureIndex, sourceLayerIndex, bucketIndex,
+-                0, 0, 0, 0, 0);
++    if (this.hasText) {
++        this.glyphQuads = addToBuffers ? getGlyphQuads(anchor, shapedText, textBoxScale, line, layout, textAlongLine) : [];
++        this.textCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
++                shapedText, textBoxScale, textPadding, textAlongLine, false);
+     }
+ 
+-    return bboxes;
+-};
++    if (this.hasIcon) {
++        this.iconQuads = addToBuffers ? getIconQuads(anchor, shapedIcon, iconBoxScale, line, layout, iconAlongLine) : [];
++        this.iconCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
++                shapedIcon, iconBoxScale, iconPadding, iconAlongLine, true);
++    }
++}
+ 
+-},{}],78:[function(require,module,exports){
++},{"../../symbol/anchor":123,"../../symbol/clip_line":125,"../../symbol/collision_feature":127,"../../symbol/get_anchors":129,"../../symbol/mergelines":132,"../../symbol/quads":133,"../../symbol/resolve_text":134,"../../symbol/shaping":135,"../../util/token":168,"../../util/util":169,"../bucket":67,"../load_geometry":74,"point-geometry":174}],72:[function(require,module,exports){
+ 'use strict';
+ 
+-var Point = require('point-geometry');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var Grid = require('grid-index');
++var assert = require('assert');
+ 
+-module.exports = CollisionTile;
++module.exports = Buffer;
+ 
+ /**
+- * A collision tile used to prevent symbols from overlapping. It keep tracks of
+- * where previous symbols have been placed and is used to check if a new
+- * symbol overlaps with any previously added symbols.
++ * The `Buffer` class turns a `StructArray` into a WebGL buffer. Each member of the StructArray's
++ * Struct type is converted to a WebGL atribute.
+  *
+- * @class CollisionTile
+- * @param {number} angle
+- * @param {number} pitch
++ * @class Buffer
+  * @private
++ * @param {object} array A serialized StructArray.
++ * @param {object} arrayType A serialized StructArrayType.
++ * @param {BufferType} type
+  */
+-function CollisionTile(angle, pitch, collisionBoxArray) {
+-    if (typeof angle === 'object') {
+-        var serialized = angle;
+-        collisionBoxArray = pitch;
+-        angle = serialized.angle;
+-        pitch = serialized.pitch;
+-        this.grid = new Grid(serialized.grid);
+-        this.ignoredGrid = new Grid(serialized.ignoredGrid);
+-    } else {
+-        this.grid = new Grid(EXTENT, 12, 6);
+-        this.ignoredGrid = new Grid(EXTENT, 12, 0);
+-    }
+-
+-    this.angle = angle;
+-    this.pitch = pitch;
++function Buffer(array, arrayType, type) {
++    this.arrayBuffer = array.arrayBuffer;
++    this.length = array.length;
++    this.attributes = arrayType.members;
++    this.itemSize = arrayType.bytesPerElement;
++    this.type = type;
++    this.arrayType = arrayType;
++}
+ 
+-    var sin = Math.sin(angle),
+-        cos = Math.cos(angle);
+-    this.rotationMatrix = [cos, -sin, sin, cos];
+-    this.reverseRotationMatrix = [cos, sin, -sin, cos];
++/**
++ * Bind this buffer to a WebGL context.
++ * @private
++ * @param gl The WebGL context
++ */
++Buffer.prototype.bind = function(gl) {
++    var type = gl[this.type];
+ 
+-    // Stretch boxes in y direction to account for the map tilt.
+-    this.yStretch = 1 / Math.cos(pitch / 180 * Math.PI);
++    if (!this.buffer) {
++        this.buffer = gl.createBuffer();
++        gl.bindBuffer(type, this.buffer);
++        gl.bufferData(type, this.arrayBuffer, gl.STATIC_DRAW);
+ 
+-    // The amount the map is squished depends on the y position.
+-    // Sort of account for this by making all boxes a bit bigger.
+-    this.yStretch = Math.pow(this.yStretch, 1.3);
++        // dump array buffer once it's bound to gl
++        this.arrayBuffer = null;
++    } else {
++        gl.bindBuffer(type, this.buffer);
++    }
++};
+ 
+-    this.collisionBoxArray = collisionBoxArray;
+-    if (collisionBoxArray.length === 0) {
+-        // the first collisionBoxArray is passed to a CollisionTile
++/**
++ * @enum {string} AttributeType
++ * @private
++ * @readonly
++ */
++var AttributeType = {
++    Int8:   'BYTE',
++    Uint8:  'UNSIGNED_BYTE',
++    Int16:  'SHORT',
++    Uint16: 'UNSIGNED_SHORT'
++};
+ 
+-        // tempCollisionBox
+-        collisionBoxArray.emplaceBack();
++/**
++ * Set the attribute pointers in a WebGL context
++ * @private
++ * @param gl The WebGL context
++ * @param program The active WebGL program
++ */
++Buffer.prototype.setVertexAttribPointers = function(gl, program) {
++    for (var j = 0; j < this.attributes.length; j++) {
++        var member = this.attributes[j];
++        var attribIndex = program[member.name];
++        assert(attribIndex !== undefined, 'array member "' + member.name + '" name does not match shader attribute name');
+ 
+-        var maxInt16 = 32767;
+-        //left
+-        collisionBoxArray.emplaceBack(0, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
+-        // right
+-        collisionBoxArray.emplaceBack(EXTENT, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
+-        // top
+-        collisionBoxArray.emplaceBack(0, 0, -maxInt16, 0, maxInt16, 0, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
+-        // bottom
+-        collisionBoxArray.emplaceBack(0, EXTENT, -maxInt16, 0, maxInt16, 0, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
++        gl.vertexAttribPointer(
++            attribIndex,
++            member.components,
++            gl[AttributeType[member.type]],
++            false,
++            this.arrayType.bytesPerElement,
++            member.offset
++        );
+     }
+-
+-    this.tempCollisionBox = collisionBoxArray.get(0);
+-    this.edges = [
+-        collisionBoxArray.get(1),
+-        collisionBoxArray.get(2),
+-        collisionBoxArray.get(3),
+-        collisionBoxArray.get(4)
+-    ];
+-}
+-
+-CollisionTile.prototype.serialize = function() {
+-    var data = {
+-        angle: this.angle,
+-        pitch: this.pitch,
+-        grid: this.grid.toArrayBuffer(),
+-        ignoredGrid: this.ignoredGrid.toArrayBuffer()
+-    };
+-    return {
+-        data: data,
+-        transferables: [data.grid, data.ignoredGrid]
+-    };
+ };
+ 
+-CollisionTile.prototype.minScale = 0.25;
+-CollisionTile.prototype.maxScale = 2;
++/**
++ * Destroy the GL buffer bound to the given WebGL context
++ * @private
++ * @param gl The WebGL context
++ */
++Buffer.prototype.destroy = function(gl) {
++    if (this.buffer) {
++        gl.deleteBuffer(this.buffer);
++    }
++};
+ 
++/**
++ * @enum {string} BufferType
++ * @private
++ * @readonly
++ */
++Buffer.BufferType = {
++    VERTEX: 'ARRAY_BUFFER',
++    ELEMENT: 'ELEMENT_ARRAY_BUFFER'
++};
+ 
+ /**
+- * Find the scale at which the collisionFeature can be shown without
+- * overlapping with other features.
++ * An `BufferType.ELEMENT` buffer holds indicies of a corresponding `BufferType.VERTEX` buffer.
++ * These indicies are stored in the `BufferType.ELEMENT` buffer as `UNSIGNED_SHORT`s.
+  *
+- * @param {CollisionFeature} collisionFeature
+- * @returns {number} placementScale
+  * @private
++ * @readonly
+  */
+-CollisionTile.prototype.placeCollisionFeature = function(collisionFeature, allowOverlap, avoidEdges) {
+-
+-    var collisionBoxArray = this.collisionBoxArray;
+-    var minPlacementScale = this.minScale;
+-    var rotationMatrix = this.rotationMatrix;
+-    var yStretch = this.yStretch;
++Buffer.ELEMENT_ATTRIBUTE_TYPE = 'Uint16';
+ 
+-    for (var b = collisionFeature.boxStartIndex; b < collisionFeature.boxEndIndex; b++) {
++/**
++ * WebGL performs best if vertex attribute offsets are aligned to 4 byte boundaries.
++ * @private
++ * @readonly
++ */
++Buffer.VERTEX_ATTRIBUTE_ALIGNMENT = 4;
+ 
+-        var box = collisionBoxArray.get(b);
++},{"assert":6}],73:[function(require,module,exports){
++'use strict';
+ 
+-        var anchorPoint = box.anchorPoint._matMult(rotationMatrix);
+-        var x = anchorPoint.x;
+-        var y = anchorPoint.y;
++var Point = require('point-geometry');
++var loadGeometry = require('./load_geometry');
++var EXTENT = require('./bucket').EXTENT;
++var featureFilter = require('feature-filter');
++var StructArrayType = require('../util/struct_array');
++var Grid = require('grid-index');
++var DictionaryCoder = require('../util/dictionary_coder');
++var vt = require('vector-tile');
++var Protobuf = require('pbf');
++var GeoJSONFeature = require('../util/vectortile_to_geojson');
++var arraysIntersect = require('../util/util').arraysIntersect;
+ 
+-        var x1 = x + box.x1;
+-        var y1 = y + box.y1 * yStretch;
+-        var x2 = x + box.x2;
+-        var y2 = y + box.y2 * yStretch;
++var intersection = require('../util/intersection_tests');
++var multiPolygonIntersectsBufferedMultiPoint = intersection.multiPolygonIntersectsBufferedMultiPoint;
++var multiPolygonIntersectsMultiPolygon = intersection.multiPolygonIntersectsMultiPolygon;
++var multiPolygonIntersectsBufferedMultiLine = intersection.multiPolygonIntersectsBufferedMultiLine;
+ 
+-        box.bbox0 = x1;
+-        box.bbox1 = y1;
+-        box.bbox2 = x2;
+-        box.bbox3 = y2;
+ 
+-        if (!allowOverlap) {
+-            var blockingBoxes = this.grid.query(x1, y1, x2, y2);
++var FeatureIndexArray = new StructArrayType({
++    members: [
++        // the index of the feature in the original vectortile
++        { type: 'Uint32', name: 'featureIndex' },
++        // the source layer the feature appears in
++        { type: 'Uint16', name: 'sourceLayerIndex' },
++        // the bucket the feature appears in
++        { type: 'Uint16', name: 'bucketIndex' }
++    ]});
+ 
+-            for (var i = 0; i < blockingBoxes.length; i++) {
+-                var blocking = collisionBoxArray.get(blockingBoxes[i]);
+-                var blockingAnchorPoint = blocking.anchorPoint._matMult(rotationMatrix);
++module.exports = FeatureIndex;
+ 
+-                minPlacementScale = this.getPlacementScale(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking);
+-                if (minPlacementScale >= this.maxScale) {
+-                    return minPlacementScale;
+-                }
+-            }
+-        }
++function FeatureIndex(coord, overscaling, collisionTile) {
++    if (coord.grid) {
++        var serialized = coord;
++        var rawTileData = overscaling;
++        coord = serialized.coord;
++        overscaling = serialized.overscaling;
++        this.grid = new Grid(serialized.grid);
++        this.featureIndexArray = new FeatureIndexArray(serialized.featureIndexArray);
++        this.rawTileData = rawTileData;
++        this.bucketLayerIDs = serialized.bucketLayerIDs;
++    } else {
++        this.grid = new Grid(EXTENT, 16, 0);
++        this.featureIndexArray = new FeatureIndexArray();
++    }
++    this.coord = coord;
++    this.overscaling = overscaling;
++    this.x = coord.x;
++    this.y = coord.y;
++    this.z = coord.z - Math.log(overscaling) / Math.LN2;
++    this.setCollisionTile(collisionTile);
++}
+ 
+-        if (avoidEdges) {
+-            var rotatedCollisionBox;
++FeatureIndex.prototype.insert = function(feature, featureIndex, sourceLayerIndex, bucketIndex) {
++    var key = this.featureIndexArray.length;
++    this.featureIndexArray.emplaceBack(featureIndex, sourceLayerIndex, bucketIndex);
++    var geometry = loadGeometry(feature);
+ 
+-            if (this.angle) {
+-                var reverseRotationMatrix = this.reverseRotationMatrix;
+-                var tl = new Point(box.x1, box.y1).matMult(reverseRotationMatrix);
+-                var tr = new Point(box.x2, box.y1).matMult(reverseRotationMatrix);
+-                var bl = new Point(box.x1, box.y2).matMult(reverseRotationMatrix);
+-                var br = new Point(box.x2, box.y2).matMult(reverseRotationMatrix);
++    for (var r = 0; r < geometry.length; r++) {
++        var ring = geometry[r];
+ 
+-                rotatedCollisionBox = this.tempCollisionBox;
+-                rotatedCollisionBox.anchorPointX = box.anchorPoint.x;
+-                rotatedCollisionBox.anchorPointY = box.anchorPoint.y;
+-                rotatedCollisionBox.x1 = Math.min(tl.x, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.y1 = Math.min(tl.y, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.x2 = Math.max(tl.x, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.y2 = Math.max(tl.y, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.maxScale = box.maxScale;
+-            } else {
+-                rotatedCollisionBox = box;
+-            }
++        // TODO: skip holes when we start using vector tile spec 2.0
+ 
+-            for (var k = 0; k < this.edges.length; k++) {
+-                var edgeBox = this.edges[k];
+-                minPlacementScale = this.getPlacementScale(minPlacementScale, box.anchorPoint, rotatedCollisionBox, edgeBox.anchorPoint, edgeBox);
+-                if (minPlacementScale >= this.maxScale) {
+-                    return minPlacementScale;
+-                }
+-            }
++        var bbox = [Infinity, Infinity, -Infinity, -Infinity];
++        for (var i = 0; i < ring.length; i++) {
++            var p = ring[i];
++            bbox[0] = Math.min(bbox[0], p.x);
++            bbox[1] = Math.min(bbox[1], p.y);
++            bbox[2] = Math.max(bbox[2], p.x);
++            bbox[3] = Math.max(bbox[3], p.y);
+         }
+-    }
+ 
+-    return minPlacementScale;
++        this.grid.insert(key, bbox[0], bbox[1], bbox[2], bbox[3]);
++    }
+ };
+ 
+-CollisionTile.prototype.queryRenderedSymbols = function(minX, minY, maxX, maxY, scale) {
+-    var sourceLayerFeatures = {};
+-    var result = [];
+-
+-    var collisionBoxArray = this.collisionBoxArray;
+-    var rotationMatrix = this.rotationMatrix;
+-    var anchorPoint = new Point(minX, minY)._matMult(rotationMatrix);
+-
+-    var queryBox = this.tempCollisionBox;
+-    queryBox.anchorX = anchorPoint.x;
+-    queryBox.anchorY = anchorPoint.y;
+-    queryBox.x1 = 0;
+-    queryBox.y1 = 0;
+-    queryBox.x2 = maxX - minX;
+-    queryBox.y2 = maxY - minY;
+-    queryBox.maxScale = scale;
++FeatureIndex.prototype.setCollisionTile = function(collisionTile) {
++    this.collisionTile = collisionTile;
++};
+ 
+-    // maxScale is stored using a Float32. Convert `scale` to the stored Float32 value.
+-    scale = queryBox.maxScale;
++FeatureIndex.prototype.serialize = function() {
++    var data = {
++        coord: this.coord,
++        overscaling: this.overscaling,
++        grid: this.grid.toArrayBuffer(),
++        featureIndexArray: this.featureIndexArray.serialize(),
++        bucketLayerIDs: this.bucketLayerIDs
++    };
++    return {
++        data: data,
++        transferables: [data.grid, data.featureIndexArray.arrayBuffer]
++    };
++};
+ 
+-    var searchBox = [
+-        anchorPoint.x + queryBox.x1 / scale,
+-        anchorPoint.y + queryBox.y1 / scale * this.yStretch,
+-        anchorPoint.x + queryBox.x2 / scale,
+-        anchorPoint.y + queryBox.y2 / scale * this.yStretch
+-    ];
++function translateDistance(translate) {
++    return Math.sqrt(translate[0] * translate[0] + translate[1] * translate[1]);
++}
+ 
+-    var blockingBoxKeys = this.grid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
+-    var blockingBoxKeys2 = this.ignoredGrid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
+-    for (var k = 0; k < blockingBoxKeys2.length; k++) {
+-        blockingBoxKeys.push(blockingBoxKeys2[k]);
++// Finds features in this tile at a particular position.
++FeatureIndex.prototype.query = function(args, styleLayers) {
++    if (!this.vtLayers) {
++        this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
++        this.sourceLayerCoder = new DictionaryCoder(this.vtLayers ? Object.keys(this.vtLayers).sort() : ['_geojsonTileLayer']);
+     }
+ 
+-    for (var i = 0; i < blockingBoxKeys.length; i++) {
+-        var blocking = collisionBoxArray.get(blockingBoxKeys[i]);
++    var result = {};
+ 
+-        var sourceLayer = blocking.sourceLayerIndex;
+-        var featureIndex = blocking.featureIndex;
+-        if (sourceLayerFeatures[sourceLayer] === undefined) {
+-            sourceLayerFeatures[sourceLayer] = {};
+-        }
++    var params = args.params || {},
++        pixelsToTileUnits = EXTENT / args.tileSize / args.scale,
++        filter = featureFilter(params.filter);
+ 
+-        if (!sourceLayerFeatures[sourceLayer][featureIndex]) {
+-            var blockingAnchorPoint = blocking.anchorPoint.matMult(rotationMatrix);
+-            var minPlacementScale = this.getPlacementScale(this.minScale, anchorPoint, queryBox, blockingAnchorPoint, blocking);
+-            if (minPlacementScale >= scale) {
+-                sourceLayerFeatures[sourceLayer][featureIndex] = true;
+-                result.push(blockingBoxKeys[i]);
+-            }
++    // Features are indexed their original geometries. The rendered geometries may
++    // be buffered, translated or offset. Figure out how much the search radius needs to be
++    // expanded by to include these features.
++    var additionalRadius = 0;
++    for (var id in styleLayers) {
++        var styleLayer = styleLayers[id];
++        var paint = styleLayer.paint;
++
++        var styleLayerDistance = 0;
++        if (styleLayer.type === 'line') {
++            styleLayerDistance = getLineWidth(paint) / 2 + Math.abs(paint['line-offset']) + translateDistance(paint['line-translate']);
++        } else if (styleLayer.type === 'fill') {
++            styleLayerDistance = translateDistance(paint['fill-translate']);
++        } else if (styleLayer.type === 'circle') {
++            styleLayerDistance = paint['circle-radius'] + translateDistance(paint['circle-translate']);
+         }
++        additionalRadius = Math.max(additionalRadius, styleLayerDistance * pixelsToTileUnits);
+     }
+ 
+-    return result;
+-};
+-
+-CollisionTile.prototype.getPlacementScale = function(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking) {
+-
+-    // Find the lowest scale at which the two boxes can fit side by side without overlapping.
+-    // Original algorithm:
+-    var anchorDiffX = anchorPoint.x - blockingAnchorPoint.x;
+-    var anchorDiffY = anchorPoint.y - blockingAnchorPoint.y;
+-    var s1 = (blocking.x1 - box.x2) / anchorDiffX; // scale at which new box is to the left of old box
+-    var s2 = (blocking.x2 - box.x1) / anchorDiffX; // scale at which new box is to the right of old box
+-    var s3 = (blocking.y1 - box.y2) * this.yStretch / anchorDiffY; // scale at which new box is to the top of old box
+-    var s4 = (blocking.y2 - box.y1) * this.yStretch / anchorDiffY; // scale at which new box is to the bottom of old box
+-
+-    if (isNaN(s1) || isNaN(s2)) s1 = s2 = 1;
+-    if (isNaN(s3) || isNaN(s4)) s3 = s4 = 1;
+-
+-    var collisionFreeScale = Math.min(Math.max(s1, s2), Math.max(s3, s4));
+-    var blockingMaxScale = blocking.maxScale;
+-    var boxMaxScale = box.maxScale;
+-
+-    if (collisionFreeScale > blockingMaxScale) {
+-        // After a box's maxScale the label has shrunk enough that the box is no longer needed to cover it,
+-        // so unblock the new box at the scale that the old box disappears.
+-        collisionFreeScale = blockingMaxScale;
+-    }
++    var queryGeometry = args.queryGeometry.map(function(q) {
++        return q.map(function(p) {
++            return new Point(p.x, p.y);
++        });
++    });
+ 
+-    if (collisionFreeScale > boxMaxScale) {
+-        // If the box can only be shown after it is visible, then the box can never be shown.
+-        // But the label can be shown after this box is not visible.
+-        collisionFreeScale = boxMaxScale;
++    var minX = Infinity;
++    var minY = Infinity;
++    var maxX = -Infinity;
++    var maxY = -Infinity;
++    for (var i = 0; i < queryGeometry.length; i++) {
++        var ring = queryGeometry[i];
++        for (var k = 0; k < ring.length; k++) {
++            var p = ring[k];
++            minX = Math.min(minX, p.x);
++            minY = Math.min(minY, p.y);
++            maxX = Math.max(maxX, p.x);
++            maxY = Math.max(maxY, p.y);
++        }
+     }
+ 
+-    if (collisionFreeScale > minPlacementScale &&
+-            collisionFreeScale >= blocking.placementScale) {
+-        // If this collision occurs at a lower scale than previously found collisions
+-        // and the collision occurs while the other label is visible
++    var matching = this.grid.query(minX - additionalRadius, minY - additionalRadius, maxX + additionalRadius, maxY + additionalRadius);
++    matching.sort(topDownFeatureComparator);
++    this.filterMatching(result, matching, this.featureIndexArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+ 
+-        // this this is the lowest scale at which the label won't collide with anything
+-        minPlacementScale = collisionFreeScale;
+-    }
++    var matchingSymbols = this.collisionTile.queryRenderedSymbols(minX, minY, maxX, maxY, args.scale);
++    matchingSymbols.sort();
++    this.filterMatching(result, matchingSymbols, this.collisionTile.collisionBoxArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+ 
+-    return minPlacementScale;
++    return result;
+ };
+ 
++function topDownFeatureComparator(a, b) {
++    return b - a;
++}
+ 
+-/**
+- * Remember this collisionFeature and what scale it was placed at to block
+- * later features from overlapping with it.
+- *
+- * @param {CollisionFeature} collisionFeature
+- * @param {number} minPlacementScale
+- * @private
+- */
+-CollisionTile.prototype.insertCollisionFeature = function(collisionFeature, minPlacementScale, ignorePlacement) {
++function getLineWidth(paint) {
++    if (paint['line-gap-width'] > 0) {
++        return paint['line-gap-width'] + 2 * paint['line-width'];
++    } else {
++        return paint['line-width'];
++    }
++}
+ 
+-    var grid = ignorePlacement ? this.ignoredGrid : this.grid;
+-    var collisionBoxArray = this.collisionBoxArray;
++FeatureIndex.prototype.filterMatching = function(result, matching, array, queryGeometry, filter, filterLayerIDs, styleLayers, bearing, pixelsToTileUnits) {
++    var previousIndex;
++    for (var k = 0; k < matching.length; k++) {
++        var index = matching[k];
+ 
+-    for (var k = collisionFeature.boxStartIndex; k < collisionFeature.boxEndIndex; k++) {
+-        var box = collisionBoxArray.get(k);
+-        box.placementScale = minPlacementScale;
+-        if (minPlacementScale < this.maxScale) {
+-            grid.insert(k, box.bbox0, box.bbox1, box.bbox2, box.bbox3);
+-        }
+-    }
+-};
++        // don't check the same feature more than once
++        if (index === previousIndex) continue;
++        previousIndex = index;
+ 
+-},{"../data/bucket":17,"grid-index":143,"point-geometry":174}],79:[function(require,module,exports){
+-'use strict';
++        var match = array.get(index);
+ 
+-var interpolate = require('../util/interpolate');
+-var Anchor = require('../symbol/anchor');
+-var checkMaxAngle = require('./check_max_angle');
++        var layerIDs = this.bucketLayerIDs[match.bucketIndex];
++        if (filterLayerIDs && !arraysIntersect(filterLayerIDs, layerIDs)) continue;
+ 
+-module.exports = getAnchors;
++        var sourceLayerName = this.sourceLayerCoder.decode(match.sourceLayerIndex);
++        var sourceLayer = this.vtLayers[sourceLayerName];
++        var feature = sourceLayer.feature(match.featureIndex);
+ 
+-function getAnchors(line, spacing, maxAngle, shapedText, shapedIcon, glyphSize, boxScale, overscaling, tileExtent) {
++        if (!filter(feature)) continue;
+ 
+-    // Resample a line to get anchor points for labels and check that each
+-    // potential label passes text-max-angle check and has enough froom to fit
+-    // on the line.
++        var geometry = null;
+ 
+-    var angleWindowSize = shapedText ?
+-        3 / 5 * glyphSize * boxScale :
+-        0;
++        for (var l = 0; l < layerIDs.length; l++) {
++            var layerID = layerIDs[l];
+ 
+-    var labelLength = Math.max(
+-        shapedText ? shapedText.right - shapedText.left : 0,
+-        shapedIcon ? shapedIcon.right - shapedIcon.left : 0);
++            if (filterLayerIDs && filterLayerIDs.indexOf(layerID) < 0) {
++                continue;
++            }
+ 
+-    // Is the line continued from outside the tile boundary?
+-    var isLineContinued = line[0].x === 0 || line[0].x === tileExtent || line[0].y === 0 || line[0].y === tileExtent;
++            var styleLayer = styleLayers[layerID];
++            if (!styleLayer) continue;
+ 
+-    // Is the label long, relative to the spacing?
+-    // If so, adjust the spacing so there is always a minimum space of `spacing / 4` between label edges.
+-    if (spacing - labelLength * boxScale  < spacing / 4) {
+-        spacing = labelLength * boxScale + spacing / 4;
+-    }
++            var translatedPolygon;
++            if (styleLayer.type !== 'symbol') {
++                // all symbols already match the style
+ 
+-    // Offset the first anchor by:
+-    // Either half the label length plus a fixed extra offset if the line is not continued
+-    // Or half the spacing if the line is continued.
++                if (!geometry) geometry = loadGeometry(feature);
+ 
+-    // For non-continued lines, add a bit of fixed extra offset to avoid collisions at T intersections.
+-    var fixedExtraOffset = glyphSize * 2;
++                var paint = styleLayer.paint;
+ 
+-    var offset = !isLineContinued ?
+-        ((labelLength / 2 + fixedExtraOffset) * boxScale * overscaling) % spacing :
+-        (spacing / 2 * overscaling) % spacing;
++                if (styleLayer.type === 'line') {
++                    translatedPolygon = translate(queryGeometry,
++                            paint['line-translate'], paint['line-translate-anchor'],
++                            bearing, pixelsToTileUnits);
++                    var halfWidth = getLineWidth(paint) / 2 * pixelsToTileUnits;
++                    if (paint['line-offset']) {
++                        geometry = offsetLine(geometry, paint['line-offset'] * pixelsToTileUnits);
++                    }
++                    if (!multiPolygonIntersectsBufferedMultiLine(translatedPolygon, geometry, halfWidth)) continue;
+ 
+-    return resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength * boxScale, isLineContinued, false, tileExtent);
+-}
++                } else if (styleLayer.type === 'fill') {
++                    translatedPolygon = translate(queryGeometry,
++                            paint['fill-translate'], paint['fill-translate-anchor'],
++                            bearing, pixelsToTileUnits);
++                    if (!multiPolygonIntersectsMultiPolygon(translatedPolygon, geometry)) continue;
+ 
++                } else if (styleLayer.type === 'circle') {
++                    translatedPolygon = translate(queryGeometry,
++                            paint['circle-translate'], paint['circle-translate-anchor'],
++                            bearing, pixelsToTileUnits);
++                    var circleRadius = paint['circle-radius'] * pixelsToTileUnits;
++                    if (!multiPolygonIntersectsBufferedMultiPoint(translatedPolygon, geometry, circleRadius)) continue;
++                }
++            }
+ 
+-function resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, placeAtMiddle, tileExtent) {
++            var geojsonFeature = new GeoJSONFeature(feature, this.z, this.x, this.y);
++            geojsonFeature.layer = styleLayer.serialize({
++                includeRefProperties: true
++            });
++            var layerResult = result[layerID];
++            if (layerResult === undefined) {
++                layerResult = result[layerID] = [];
++            }
++            layerResult.push(geojsonFeature);
++        }
++    }
++};
+ 
+-    var halfLabelLength = labelLength / 2;
+-    var lineLength = 0;
+-    for (var k = 0; k < line.length - 1; k++) {
+-        lineLength += line[k].dist(line[k + 1]);
++function translate(queryGeometry, translate, translateAnchor, bearing, pixelsToTileUnits) {
++    if (!translate[0] && !translate[1]) {
++        return queryGeometry;
+     }
+ 
+-    var distance = 0,
+-        markedDistance = offset - spacing;
++    translate = Point.convert(translate);
+ 
+-    var anchors = [];
++    if (translateAnchor === "viewport") {
++        translate._rotate(-bearing);
++    }
+ 
+-    for (var i = 0; i < line.length - 1; i++) {
++    var translated = [];
++    for (var i = 0; i < queryGeometry.length; i++) {
++        var ring = queryGeometry[i];
++        var translatedRing = [];
++        for (var k = 0; k < ring.length; k++) {
++            translatedRing.push(ring[k].sub(translate._mult(pixelsToTileUnits)));
++        }
++        translated.push(translatedRing);
++    }
++    return translated;
++}
+ 
+-        var a = line[i],
+-            b = line[i + 1];
++function offsetLine(rings, offset) {
++    var newRings = [];
++    var zero = new Point(0, 0);
++    for (var k = 0; k < rings.length; k++) {
++        var ring = rings[k];
++        var newRing = [];
++        for (var i = 0; i < ring.length; i++) {
++            var a = ring[i - 1];
++            var b = ring[i];
++            var c = ring[i + 1];
++            var aToB = i === 0 ? zero : b.sub(a)._unit()._perp();
++            var bToC = i === ring.length - 1 ? zero : c.sub(b)._unit()._perp();
++            var extrude = aToB._add(bToC)._unit();
+ 
+-        var segmentDist = a.dist(b),
+-            angle = b.angleTo(a);
++            var cosHalfAngle = extrude.x * bToC.x + extrude.y * bToC.y;
++            extrude._mult(1 / cosHalfAngle);
+ 
+-        while (markedDistance + spacing < distance + segmentDist) {
+-            markedDistance += spacing;
++            newRing.push(extrude._mult(offset)._add(b));
++        }
++        newRings.push(newRing);
++    }
++    return newRings;
++}
+ 
+-            var t = (markedDistance - distance) / segmentDist,
+-                x = interpolate(a.x, b.x, t),
+-                y = interpolate(a.y, b.y, t);
++},{"../util/dictionary_coder":160,"../util/intersection_tests":164,"../util/struct_array":167,"../util/util":169,"../util/vectortile_to_geojson":170,"./bucket":67,"./load_geometry":74,"feature-filter":12,"grid-index":34,"pbf":173,"point-geometry":174,"vector-tile":184}],74:[function(require,module,exports){
++'use strict';
+ 
+-            // Check that the point is within the tile boundaries and that
+-            // the label would fit before the beginning and end of the line
+-            // if placed at this point.
+-            if (x >= 0 && x < tileExtent && y >= 0 && y < tileExtent &&
+-                    markedDistance - halfLabelLength >= 0 &&
+-                    markedDistance + halfLabelLength <= lineLength) {
+-                var anchor = new Anchor(x, y, angle, i)._round();
++var EXTENT = require('./bucket').EXTENT;
++var EXTENT_MIN = EXTENT * -2;
++var EXTENT_MAX = (EXTENT * 2) - 1;
+ 
+-                if (!angleWindowSize || checkMaxAngle(line, anchor, labelLength, angleWindowSize, maxAngle)) {
+-                    anchors.push(anchor);
+-                }
++// only log a geometry warning once per context
++var warned = false;
++
++/**
++ * Loads a geometry from a VectorTileFeature and scales it to the common extent
++ * used internally.
++ * @private
++ */
++module.exports = function loadGeometry(feature) {
++    var scale = EXTENT / feature.extent;
++    var geometry = feature.loadGeometry();
++    for (var r = 0; r < geometry.length; r++) {
++        var ring = geometry[r];
++        for (var p = 0; p < ring.length; p++) {
++            var point = ring[p];
++            // round here because mapbox-gl-native uses integers to represent
++            // points and we need to do the same to avoid renering differences.
++            point.x = Math.round(point.x * scale);
++            point.y = Math.round(point.y * scale);
++            if (warned === false && (
++                point.x < EXTENT_MIN ||
++                point.x > EXTENT_MAX ||
++                point.y < EXTENT_MIN ||
++                point.y > EXTENT_MAX)) {
++                console.warn('Geometry exceeds allowed extent, reduce your vector tile buffer size');
++                warned = true;
+             }
+         }
+-
+-        distance += segmentDist;
+     }
++    return geometry;
++};
+ 
+-    if (!placeAtMiddle && !anchors.length && !isLineContinued) {
+-        // The first attempt at finding anchors at which labels can be placed failed.
+-        // Try again, but this time just try placing one anchor at the middle of the line.
+-        // This has the most effect for short lines in overscaled tiles, since the
+-        // initial offset used in overscaled tiles is calculated to align labels with positions in
+-        // parent tiles instead of placing the label as close to the beginning as possible.
+-        anchors = resample(line, distance / 2, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, true, tileExtent);
+-    }
++},{"./bucket":67}],75:[function(require,module,exports){
++'use strict';
+ 
+-    return anchors;
+-}
++module.exports = Coordinate;
+ 
+-},{"../symbol/anchor":73,"../util/interpolate":113,"./check_max_angle":74}],80:[function(require,module,exports){
+-'use strict';
++/**
++ * A coordinate is a column, row, zoom combination, often used
++ * as the data component of a tile.
++ *
++ * @param {number} column
++ * @param {number} row
++ * @param {number} zoom
++ * @private
++ */
++function Coordinate(column, row, zoom) {
++    this.column = column;
++    this.row = row;
++    this.zoom = zoom;
++}
+ 
+-var ShelfPack = require('shelf-pack');
++Coordinate.prototype = {
+ 
+-module.exports = GlyphAtlas;
+-function GlyphAtlas(width, height) {
+-    this.width = width;
+-    this.height = height;
++    /**
++     * Create a clone of this coordinate that can be mutated without
++     * changing the original coordinate
++     *
++     * @returns {Coordinate} clone
++     * @private
++     * var coord = new Coordinate(0, 0, 0);
++     * var c2 = coord.clone();
++     * // since coord is cloned, modifying a property of c2 does
++     * // not modify it.
++     * c2.zoom = 2;
++     */
++    clone: function() {
++        return new Coordinate(this.column, this.row, this.zoom);
++    },
+ 
+-    this.bin = new ShelfPack(width, height);
+-    this.index = {};
+-    this.ids = {};
+-    this.data = new Uint8Array(width * height);
+-}
++    /**
++     * Zoom this coordinate to a given zoom level. This returns a new
++     * coordinate object, not mutating the old one.
++     *
++     * @param {number} zoom
++     * @returns {Coordinate} zoomed coordinate
++     * @private
++     * @example
++     * var coord = new Coordinate(0, 0, 0);
++     * var c2 = coord.zoomTo(1);
++     * c2 // equals new Coordinate(0, 0, 1);
++     */
++    zoomTo: function(zoom) { return this.clone()._zoomTo(zoom); },
+ 
+-GlyphAtlas.prototype.getGlyphs = function() {
+-    var glyphs = {},
+-        split,
+-        name,
+-        id;
++    /**
++     * Subtract the column and row values of this coordinate from those
++     * of another coordinate. The other coordinat will be zoomed to the
++     * same level as `this` before the subtraction occurs
++     *
++     * @param {Coordinate} c other coordinate
++     * @returns {Coordinate} result
++     * @private
++     */
++    sub: function(c) { return this.clone()._sub(c); },
+ 
+-    for (var key in this.ids) {
+-        split = key.split('#');
+-        name = split[0];
+-        id = split[1];
++    _zoomTo: function(zoom) {
++        var scale = Math.pow(2, zoom - this.zoom);
++        this.column *= scale;
++        this.row *= scale;
++        this.zoom = zoom;
++        return this;
++    },
+ 
+-        if (!glyphs[name]) glyphs[name] = [];
+-        glyphs[name].push(id);
++    _sub: function(c) {
++        c = c.zoomTo(this.zoom);
++        this.column -= c.column;
++        this.row -= c.row;
++        return this;
+     }
+-
+-    return glyphs;
+ };
+ 
+-GlyphAtlas.prototype.getRects = function() {
+-    var rects = {},
+-        split,
+-        name,
+-        id;
++},{}],76:[function(require,module,exports){
++'use strict';
+ 
+-    for (var key in this.ids) {
+-        split = key.split('#');
+-        name = split[0];
+-        id = split[1];
++module.exports = LngLat;
+ 
+-        if (!rects[name]) rects[name] = {};
+-        rects[name][id] = this.index[key];
++var wrap = require('../util/util').wrap;
++
++/**
++ * Create a longitude, latitude object from a given longitude and latitude pair in degrees.
++ * Mapbox GL uses Longitude, Latitude coordinate order to match GeoJSON.
++ *
++ * Note that any Mapbox GL method that accepts a `LngLat` object can also accept an
++ * `Array` and will perform an implicit conversion.  The following lines are equivalent:
++ ```
++ map.setCenter([-73.9749, 40.7736]);
++ map.setCenter( new mapboxgl.LngLat(-73.9749, 40.7736) );
++ ```
++ *
++ * @class LngLat
++ * @classdesc A representation of a longitude, latitude point, in degrees.
++ * @param {number} lng longitude
++ * @param {number} lat latitude
++ * @example
++ * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
++ */
++function LngLat(lng, lat) {
++    if (isNaN(lng) || isNaN(lat)) {
++        throw new Error('Invalid LngLat object: (' + lng + ', ' + lat + ')');
++    }
++    this.lng = +lng;
++    this.lat = +lat;
++    if (this.lat > 90 || this.lat < -90) {
++        throw new Error('Invalid LngLat latitude value: must be between -90 and 90');
+     }
++}
+ 
+-    return rects;
++/**
++ * Return a new `LngLat` object whose longitude is wrapped to the range (-180, 180).
++ *
++ * @returns {LngLat} wrapped LngLat object
++ * @example
++ * var ll = new mapboxgl.LngLat(286.0251, 40.7736);
++ * var wrapped = ll.wrap();
++ * wrapped.lng; // = -73.9749
++ */
++LngLat.prototype.wrap = function () {
++    return new LngLat(wrap(this.lng, -180, 180), this.lat);
+ };
+ 
++/**
++ * Return a `LngLat` as an array
++ *
++ * @returns {array} [lng, lat]
++ * @example
++ * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
++ * ll.toArray(); // = [-73.9749, 40.7736]
++ */
++LngLat.prototype.toArray = function () {
++    return [this.lng, this.lat];
++};
+ 
+-GlyphAtlas.prototype.addGlyph = function(id, name, glyph, buffer) {
+-    if (!glyph) {
+-        // console.warn('missing glyph', code, String.fromCharCode(code));
+-        return null;
+-    }
+-    var key = name + "#" + glyph.id;
++/**
++ * Return a `LngLat` as a string
++ *
++ * @returns {string} "LngLat(lng, lat)"
++ * @example
++ * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
++ * ll.toString(); // = "LngLat(-73.9749, 40.7736)"
++ */
++LngLat.prototype.toString = function () {
++    return 'LngLat(' + this.lng + ', ' + this.lat + ')';
++};
+ 
+-    // The glyph is already in this texture.
+-    if (this.index[key]) {
+-        if (this.ids[key].indexOf(id) < 0) {
+-            this.ids[key].push(id);
+-        }
+-        return this.index[key];
++/**
++ * Convert an array to a `LngLat` object, or return an existing `LngLat` object
++ * unchanged.
++ *
++ * @param {Array<number>|LngLat} input `input` to convert
++ * @returns {LngLat} LngLat object or original input
++ * @example
++ * var arr = [-73.9749, 40.7736];
++ * var ll = mapboxgl.LngLat.convert(arr);
++ * ll;   // = LngLat {lng: -73.9749, lat: 40.7736}
++ */
++LngLat.convert = function (input) {
++    if (input instanceof LngLat) {
++        return input;
++    }
++    if (Array.isArray(input)) {
++        return new LngLat(input[0], input[1]);
+     }
++    return input;
++};
+ 
+-    // The glyph bitmap has zero width.
+-    if (!glyph.bitmap) {
+-        return null;
++},{"../util/util":169}],77:[function(require,module,exports){
++'use strict';
++
++module.exports = LngLatBounds;
++
++var LngLat = require('./lng_lat');
++
++/**
++ * Creates a bounding box from the given pair of points. If parameteres are omitted, a `null` bounding box is created.
++ *
++ * @class LngLatBounds
++ * @classdesc A representation of rectangular box on the earth, defined by its southwest and northeast points in longitude and latitude.
++ * @param {LngLat} sw southwest
++ * @param {LngLat} ne northeast
++ * @example
++ * var sw = new mapboxgl.LngLat(-73.9876, 40.7661);
++ * var ne = new mapboxgl.LngLat(-73.9397, 40.8002);
++ * var llb = new mapboxgl.LngLatBounds(sw, ne);
++ */
++function LngLatBounds(sw, ne) {
++    if (!sw) {
++        return;
++    } else if (ne) {
++        this.extend(sw).extend(ne);
++    } else if (sw.length === 4) {
++        this.extend([sw[0], sw[1]]).extend([sw[2], sw[3]]);
++    } else {
++        this.extend(sw[0]).extend(sw[1]);
+     }
++}
+ 
+-    var bufferedWidth = glyph.width + buffer * 2;
+-    var bufferedHeight = glyph.height + buffer * 2;
++LngLatBounds.prototype = {
++
++    /**
++     * Extend the bounds to include a given LngLat or LngLatBounds.
++     *
++     * @param {LngLat|LngLatBounds} obj object to extend to
++     * @returns {LngLatBounds} `this`
++     */
++    extend: function(obj) {
++        var sw = this._sw,
++            ne = this._ne,
++            sw2, ne2;
++
++        if (obj instanceof LngLat) {
++            sw2 = obj;
++            ne2 = obj;
+ 
+-    // Add a 1px border around every image.
+-    var padding = 1;
+-    var packWidth = bufferedWidth + 2 * padding;
+-    var packHeight = bufferedHeight + 2 * padding;
++        } else if (obj instanceof LngLatBounds) {
++            sw2 = obj._sw;
++            ne2 = obj._ne;
+ 
+-    // Increase to next number divisible by 4, but at least 1.
+-    // This is so we can scale down the texture coordinates and pack them
+-    // into 2 bytes rather than 4 bytes.
+-    packWidth += (4 - packWidth % 4);
+-    packHeight += (4 - packHeight % 4);
++            if (!sw2 || !ne2) return this;
+ 
+-    var rect = this.bin.packOne(packWidth, packHeight);
+-    if (!rect) {
+-        this.resize();
+-        rect = this.bin.packOne(packWidth, packHeight);
+-    }
+-    if (!rect) {
+-        console.warn('glyph bitmap overflow');
+-        return null;
+-    }
++        } else {
++            return obj ? this.extend(LngLat.convert(obj) || LngLatBounds.convert(obj)) : this;
++        }
+ 
+-    this.index[key] = rect;
+-    this.ids[key] = [id];
++        if (!sw && !ne) {
++            this._sw = new LngLat(sw2.lng, sw2.lat);
++            this._ne = new LngLat(ne2.lng, ne2.lat);
+ 
+-    var target = this.data;
+-    var source = glyph.bitmap;
+-    for (var y = 0; y < bufferedHeight; y++) {
+-        var y1 = this.width * (rect.y + y + padding) + rect.x + padding;
+-        var y2 = bufferedWidth * y;
+-        for (var x = 0; x < bufferedWidth; x++) {
+-            target[y1 + x] = source[y2 + x];
++        } else {
++            sw.lng = Math.min(sw2.lng, sw.lng);
++            sw.lat = Math.min(sw2.lat, sw.lat);
++            ne.lng = Math.max(ne2.lng, ne.lng);
++            ne.lat = Math.max(ne2.lat, ne.lat);
+         }
+-    }
+ 
+-    this.dirty = true;
++        return this;
++    },
+ 
+-    return rect;
+-};
++    /**
++     * Get the point equidistant from this box's corners
++     * @returns {LngLat} centerpoint
++     * @example
++     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
++     * llb.getCenter(); // = LngLat {lng: -73.96365, lat: 40.78315}
++     */
++    getCenter: function() {
++        return new LngLat((this._sw.lng + this._ne.lng) / 2, (this._sw.lat + this._ne.lat) / 2);
++    },
+ 
+-GlyphAtlas.prototype.resize = function() {
+-    var origw = this.width,
+-        origh = this.height;
++    /**
++     * Get southwest corner
++     * @returns {LngLat} southwest
++     */
++    getSouthWest: function() { return this._sw; },
+ 
+-    // For now, don't grow the atlas beyond 1024x1024 because of how
+-    // texture coords pack into unsigned byte in symbol bucket.
+-    if (origw > 512 || origh > 512) return;
++    /**
++     * Get northeast corner
++     * @returns {LngLat} northeast
++     */
++    getNorthEast: function() { return this._ne; },
+ 
+-    if (this.texture) {
+-        if (this.gl) {
+-            this.gl.deleteTexture(this.texture);
+-        }
+-        this.texture = null;
+-    }
++    /**
++     * Get northwest corner
++     * @returns {LngLat} northwest
++     */
++    getNorthWest: function() { return new LngLat(this.getWest(), this.getNorth()); },
+ 
+-    this.width *= 2;
+-    this.height *= 2;
+-    this.bin.resize(this.width, this.height);
++    /**
++     * Get southeast corner
++     * @returns {LngLat} southeast
++     */
++    getSouthEast: function() { return new LngLat(this.getEast(), this.getSouth()); },
+ 
+-    var buf = new ArrayBuffer(this.width * this.height),
+-        src, dst;
+-    for (var i = 0; i < origh; i++) {
+-        src = new Uint8Array(this.data.buffer, origh * i, origw);
+-        dst = new Uint8Array(buf, origh * i * 2, origw);
+-        dst.set(src);
+-    }
+-    this.data = new Uint8Array(buf);
+-};
++    /**
++     * Get west edge longitude
++     * @returns {number} west
++     */
++    getWest:  function() { return this._sw.lng; },
+ 
+-GlyphAtlas.prototype.bind = function(gl) {
+-    this.gl = gl;
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, this.width, this.height, 0, gl.ALPHA, gl.UNSIGNED_BYTE, null);
++    /**
++     * Get south edge latitude
++     * @returns {number} south
++     */
++    getSouth: function() { return this._sw.lat; },
+ 
+-    } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++    /**
++     * Get east edge longitude
++     * @returns {number} east
++     */
++    getEast:  function() { return this._ne.lng; },
++
++    /**
++     * Get north edge latitude
++     * @returns {number} north
++     */
++    getNorth: function() { return this._ne.lat; },
++
++    /**
++     * Return a `LngLatBounds` as an array
++     *
++     * @returns {array} [lng, lat]
++     * @example
++     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
++     * llb.toArray(); // = [[-73.9876, 40.7661], [-73.9397, 40.8002]]
++     */
++    toArray: function () {
++        return [this._sw.toArray(), this._ne.toArray()];
++    },
++
++    /**
++     * Return a `LngLatBounds` as a string
++     *
++     * @returns {string} "LngLatBounds(LngLat(lng, lat), LngLat(lng, lat))"
++     * @example
++     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
++     * llb.toString(); // = "LngLatBounds(LngLat(-73.9876, 40.7661), LngLat(-73.9397, 40.8002))"
++     */
++    toString: function () {
++        return 'LngLatBounds(' + this._sw.toString() + ', ' + this._ne.toString() + ')';
+     }
+ };
+ 
+-GlyphAtlas.prototype.updateTexture = function(gl) {
+-    this.bind(gl);
+-    if (this.dirty) {
+-        gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.ALPHA, gl.UNSIGNED_BYTE, this.data);
+-        this.dirty = false;
+-    }
++/**
++ * Convert an array to a `LngLatBounds` object, or return an existing
++ * `LngLatBounds` object unchanged.
++ *
++ * Calls `LngLat#convert` internally to convert arrays as `LngLat` values.
++ *
++ * @param {LngLatBounds|Array<number>|Array<Array<number>>} input input to convert to a LngLatBounds
++ * @returns {LngLatBounds} LngLatBounds object or original input
++ * @example
++ * var arr = [[-73.9876, 40.7661], [-73.9397, 40.8002]];
++ * var llb = mapboxgl.LngLatBounds.convert(arr);
++ * llb;   // = LngLatBounds {_sw: LngLat {lng: -73.9876, lat: 40.7661}, _ne: LngLat {lng: -73.9397, lat: 40.8002}}
++ */
++LngLatBounds.convert = function (input) {
++    if (!input || input instanceof LngLatBounds) return input;
++    return new LngLatBounds(input);
+ };
+ 
+-},{"shelf-pack":176}],81:[function(require,module,exports){
++},{"./lng_lat":76}],78:[function(require,module,exports){
+ 'use strict';
+ 
+-var normalizeURL = require('../util/mapbox').normalizeGlyphsURL;
+-var getArrayBuffer = require('../util/ajax').getArrayBuffer;
+-var Glyphs = require('../util/glyphs');
+-var GlyphAtlas = require('../symbol/glyph_atlas');
+-var Protobuf = require('pbf');
++var LngLat = require('./lng_lat'),
++    Point = require('point-geometry'),
++    Coordinate = require('./coordinate'),
++    wrap = require('../util/util').wrap,
++    interp = require('../util/interpolate'),
++    TileCoord = require('../source/tile_coord'),
++    EXTENT = require('../data/bucket').EXTENT,
++    glmatrix = require('gl-matrix');
+ 
+-module.exports = GlyphSource;
++var vec4 = glmatrix.vec4,
++    mat4 = glmatrix.mat4,
++    mat2 = glmatrix.mat2;
++
++module.exports = Transform;
+ 
+ /**
+- * A glyph source has a URL from which to load new glyphs and manages
+- * GlyphAtlases in which to store glyphs used by the requested fontstacks
+- * and ranges.
++ * A single transform, generally used for a single tile to be
++ * scaled, rotated, and zoomed.
+  *
+- * @param {string} url glyph template url
++ * @param {number} minZoom
++ * @param {number} maxZoom
+  * @private
+  */
+-function GlyphSource(url) {
+-    this.url = url && normalizeURL(url);
+-    this.atlases = {};
+-    this.stacks = {};
+-    this.loading = {};
++function Transform(minZoom, maxZoom) {
++    this.tileSize = 512; // constant
++
++    this._minZoom = minZoom || 0;
++    this._maxZoom = maxZoom || 22;
++
++    this.latRange = [-85.05113, 85.05113];
++
++    this.width = 0;
++    this.height = 0;
++    this._center = new LngLat(0, 0);
++    this.zoom = 0;
++    this.angle = 0;
++    this._altitude = 1.5;
++    this._pitch = 0;
++    this._unmodified = true;
+ }
+ 
+-GlyphSource.prototype.getSimpleGlyphs = function(fontstack, glyphIDs, uid, callback) {
+-    if (this.stacks[fontstack] === undefined) {
+-        this.stacks[fontstack] = {};
+-    }
+-    if (this.atlases[fontstack] === undefined) {
+-        this.atlases[fontstack] = new GlyphAtlas(128, 128);
+-    }
++Transform.prototype = {
++    get minZoom() { return this._minZoom; },
++    set minZoom(zoom) {
++        if (this._minZoom === zoom) return;
++        this._minZoom = zoom;
++        this.zoom = Math.max(this.zoom, zoom);
++    },
+ 
+-    var glyphs = {};
+-    var stack = this.stacks[fontstack];
+-    var atlas = this.atlases[fontstack];
++    get maxZoom() { return this._maxZoom; },
++    set maxZoom(zoom) {
++        if (this._maxZoom === zoom) return;
++        this._maxZoom = zoom;
++        this.zoom = Math.min(this.zoom, zoom);
++    },
+ 
+-    // the number of pixels the sdf bitmaps are padded by
+-    var buffer = 3;
++    get worldSize() {
++        return this.tileSize * this.scale;
++    },
+ 
+-    var missing = {};
+-    var remaining = 0;
+-    var range;
++    get centerPoint() {
++        return this.size._div(2);
++    },
+ 
+-    for (var i = 0; i < glyphIDs.length; i++) {
+-        var glyphID = glyphIDs[i];
+-        range = Math.floor(glyphID / 256);
++    get size() {
++        return new Point(this.width, this.height);
++    },
+ 
+-        if (stack[range]) {
+-            var glyph = stack[range].glyphs[glyphID];
+-            var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
+-            if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
+-        } else {
+-            if (missing[range] === undefined) {
+-                missing[range] = [];
+-                remaining++;
+-            }
+-            missing[range].push(glyphID);
+-        }
+-    }
++    get bearing() {
++        return -this.angle / Math.PI * 180;
++    },
++    set bearing(bearing) {
++        var b = -wrap(bearing, -180, 180) * Math.PI / 180;
++        if (this.angle === b) return;
++        this._unmodified = false;
++        this.angle = b;
++        this._calcProjMatrix();
+ 
+-    if (!remaining) callback(undefined, glyphs, fontstack);
++        // 2x2 matrix for rotating points
++        this.rotationMatrix = mat2.create();
++        mat2.rotate(this.rotationMatrix, this.rotationMatrix, this.angle);
++    },
+ 
+-    var onRangeLoaded = function(err, range, data) {
+-        // TODO not be silent about errors
+-        if (!err) {
+-            var stack = this.stacks[fontstack][range] = data.stacks[0];
+-            for (var i = 0; i < missing[range].length; i++) {
+-                var glyphID = missing[range][i];
+-                var glyph = stack.glyphs[glyphID];
+-                var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
+-                if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
+-            }
+-        }
+-        remaining--;
+-        if (!remaining) callback(undefined, glyphs, fontstack);
+-    }.bind(this);
++    get pitch() {
++        return this._pitch / Math.PI * 180;
++    },
++    set pitch(pitch) {
++        var p = Math.min(60, pitch) / 180 * Math.PI;
++        if (this._pitch === p) return;
++        this._unmodified = false;
++        this._pitch = p;
++        this._calcProjMatrix();
++    },
+ 
+-    for (var r in missing) {
+-        this.loadRange(fontstack, r, onRangeLoaded);
+-    }
+-};
++    get altitude() {
++        return this._altitude;
++    },
++    set altitude(altitude) {
++        var a = Math.max(0.75, altitude);
++        if (this._altitude === a) return;
++        this._unmodified = false;
++        this._altitude = a;
++        this._calcProjMatrix();
++    },
+ 
+-// A simplified representation of the glyph containing only the properties needed for shaping.
+-function SimpleGlyph(glyph, rect, buffer) {
+-    var padding = 1;
+-    this.advance = glyph.advance;
+-    this.left = glyph.left - buffer - padding;
+-    this.top = glyph.top + buffer + padding;
+-    this.rect = rect;
+-}
++    get zoom() { return this._zoom; },
++    set zoom(zoom) {
++        var z = Math.min(Math.max(zoom, this.minZoom), this.maxZoom);
++        if (this._zoom === z) return;
++        this._unmodified = false;
++        this._zoom = z;
++        this.scale = this.zoomScale(z);
++        this.tileZoom = Math.floor(z);
++        this.zoomFraction = z - this.tileZoom;
++        this._calcProjMatrix();
++        this._constrain();
++    },
+ 
+-GlyphSource.prototype.loadRange = function(fontstack, range, callback) {
+-    if (range * 256 > 65535) return callback('glyphs > 65535 not supported');
++    get center() { return this._center; },
++    set center(center) {
++        if (center.lat === this._center.lat && center.lng === this._center.lng) return;
++        this._unmodified = false;
++        this._center = center;
++        this._calcProjMatrix();
++        this._constrain();
++    },
+ 
+-    if (this.loading[fontstack] === undefined) {
+-        this.loading[fontstack] = {};
+-    }
+-    var loading = this.loading[fontstack];
++    resize: function(width, height) {
++        this.width = width;
++        this.height = height;
+ 
+-    if (loading[range]) {
+-        loading[range].push(callback);
+-    } else {
+-        loading[range] = [callback];
++        this.pixelsToGLUnits = [2 / width, -2 / height];
++        this._calcProjMatrix();
++        this._constrain();
++    },
+ 
+-        var rangeName = (range * 256) + '-' + (range * 256 + 255);
+-        var url = glyphUrl(fontstack, rangeName, this.url);
++    get unmodified() { return this._unmodified; },
+ 
+-        getArrayBuffer(url, function(err, data) {
+-            var glyphs = !err && new Glyphs(new Protobuf(new Uint8Array(data)));
+-            for (var i = 0; i < loading[range].length; i++) {
+-                loading[range][i](err, range, glyphs);
+-            }
+-            delete loading[range];
+-        });
+-    }
+-};
++    zoomScale: function(zoom) { return Math.pow(2, zoom); },
++    scaleZoom: function(scale) { return Math.log(scale) / Math.LN2; },
+ 
+-GlyphSource.prototype.getGlyphAtlas = function(fontstack) {
+-    return this.atlases[fontstack];
+-};
++    project: function(lnglat, worldSize) {
++        return new Point(
++            this.lngX(lnglat.lng, worldSize),
++            this.latY(lnglat.lat, worldSize));
++    },
+ 
+-/**
+- * Use CNAME sharding to load a specific glyph range over a randomized
+- * but consistent subdomain.
+- * @param {string} fontstack comma-joined fonts
+- * @param {string} range comma-joined range
+- * @param {url} url templated url
+- * @param {string} [subdomains=abc] subdomains as a string where each letter is one.
+- * @returns {string} a url to load that section of glyphs
+- * @private
+- */
+-function glyphUrl(fontstack, range, url, subdomains) {
+-    subdomains = subdomains || 'abc';
++    unproject: function(point, worldSize) {
++        return new LngLat(
++            this.xLng(point.x, worldSize),
++            this.yLat(point.y, worldSize));
++    },
++
++    get x() { return this.lngX(this.center.lng); },
++    get y() { return this.latY(this.center.lat); },
++
++    get point() { return new Point(this.x, this.y); },
++
++    /**
++     * latitude to absolute x coord
++     * @param {number} lon
++     * @param {number} [worldSize=this.worldSize]
++     * @returns {number} pixel coordinate
++     * @private
++     */
++    lngX: function(lng, worldSize) {
++        return (180 + lng) * (worldSize || this.worldSize) / 360;
++    },
++    /**
++     * latitude to absolute y coord
++     * @param {number} lat
++     * @param {number} [worldSize=this.worldSize]
++     * @returns {number} pixel coordinate
++     * @private
++     */
++    latY: function(lat, worldSize) {
++        var y = 180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360));
++        return (180 - y) * (worldSize || this.worldSize) / 360;
++    },
++
++    xLng: function(x, worldSize) {
++        return x * 360 / (worldSize || this.worldSize) - 180;
++    },
++    yLat: function(y, worldSize) {
++        var y2 = 180 - y * 360 / (worldSize || this.worldSize);
++        return 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90;
++    },
++
++    panBy: function(offset) {
++        var point = this.centerPoint._add(offset);
++        this.center = this.pointLocation(point);
++    },
++
++    setLocationAtPoint: function(lnglat, point) {
++        var c = this.locationCoordinate(lnglat);
++        var coordAtPoint = this.pointCoordinate(point);
++        var coordCenter = this.pointCoordinate(this.centerPoint);
++        var translate = coordAtPoint._sub(c);
++        this._unmodified = false;
++        this.center = this.coordinateLocation(coordCenter._sub(translate));
++    },
++
++    /**
++     * Given a location, return the screen point that corresponds to it
++     * @param {LngLat} lnglat location
++     * @returns {Point} screen point
++     * @private
++     */
++    locationPoint: function(lnglat) {
++        return this.coordinatePoint(this.locationCoordinate(lnglat));
++    },
++
++    /**
++     * Given a point on screen, return its lnglat
++     * @param {Point} p screen point
++     * @returns {LngLat} lnglat location
++     * @private
++     */
++    pointLocation: function(p) {
++        return this.coordinateLocation(this.pointCoordinate(p));
++    },
++
++    /**
++     * Given a geographical lnglat, return an unrounded
++     * coordinate that represents it at this transform's zoom level and
++     * worldsize.
++     * @param {LngLat} lnglat
++     * @returns {Coordinate}
++     * @private
++     */
++    locationCoordinate: function(lnglat) {
++        var k = this.zoomScale(this.tileZoom) / this.worldSize,
++            ll = LngLat.convert(lnglat);
++
++        return new Coordinate(
++            this.lngX(ll.lng) * k,
++            this.latY(ll.lat) * k,
++            this.tileZoom);
++    },
++
++    /**
++     * Given a Coordinate, return its geographical position.
++     * @param {Coordinate} coord
++     * @returns {LngLat} lnglat
++     * @private
++     */
++    coordinateLocation: function(coord) {
++        var worldSize = this.zoomScale(coord.zoom);
++        return new LngLat(
++            this.xLng(coord.column, worldSize),
++            this.yLat(coord.row, worldSize));
++    },
+ 
+-    return url
+-        .replace('{s}', subdomains[fontstack.length % subdomains.length])
+-        .replace('{fontstack}', fontstack)
+-        .replace('{range}', range);
+-}
++    pointCoordinate: function(p) {
+ 
+-},{"../symbol/glyph_atlas":80,"../util/ajax":104,"../util/glyphs":112,"../util/mapbox":116,"pbf":172}],82:[function(require,module,exports){
+-'use strict';
++        var targetZ = 0;
+ 
+-module.exports = function (features, textFeatures, geometries) {
++        var matrix = this.coordinatePointMatrix(this.tileZoom);
++        mat4.invert(matrix, matrix);
+ 
+-    var leftIndex = {},
+-        rightIndex = {},
+-        mergedFeatures = [],
+-        mergedGeom = [],
+-        mergedTexts = [],
+-        mergedIndex = 0,
+-        k;
++        if (!matrix) throw new Error("failed to invert matrix");
+ 
+-    function add(k) {
+-        mergedFeatures.push(features[k]);
+-        mergedGeom.push(geometries[k]);
+-        mergedTexts.push(textFeatures[k]);
+-        mergedIndex++;
+-    }
++        // since we don't know the correct projected z value for the point,
++        // unproject two points to get a line and then find the point on that
++        // line with z=0
+ 
+-    function mergeFromRight(leftKey, rightKey, geom) {
+-        var i = rightIndex[leftKey];
+-        delete rightIndex[leftKey];
+-        rightIndex[rightKey] = i;
++        var coord0 = [p.x, p.y, 0, 1];
++        var coord1 = [p.x, p.y, 1, 1];
+ 
+-        mergedGeom[i][0].pop();
+-        mergedGeom[i][0] = mergedGeom[i][0].concat(geom[0]);
+-        return i;
+-    }
++        vec4.transformMat4(coord0, coord0, matrix);
++        vec4.transformMat4(coord1, coord1, matrix);
+ 
+-    function mergeFromLeft(leftKey, rightKey, geom) {
+-        var i = leftIndex[rightKey];
+-        delete leftIndex[rightKey];
+-        leftIndex[leftKey] = i;
++        var w0 = coord0[3];
++        var w1 = coord1[3];
++        var x0 = coord0[0] / w0;
++        var x1 = coord1[0] / w1;
++        var y0 = coord0[1] / w0;
++        var y1 = coord1[1] / w1;
++        var z0 = coord0[2] / w0;
++        var z1 = coord1[2] / w1;
+ 
+-        mergedGeom[i][0].shift();
+-        mergedGeom[i][0] = geom[0].concat(mergedGeom[i][0]);
+-        return i;
+-    }
+ 
+-    function getKey(text, geom, onRight) {
+-        var point = onRight ? geom[0][geom[0].length - 1] : geom[0][0];
+-        return text + ':' + point.x + ':' + point.y;
+-    }
++        var t = z0 === z1 ? 0 : (targetZ - z0) / (z1 - z0);
+ 
+-    for (k = 0; k < features.length; k++) {
+-        var geom = geometries[k],
+-            text = textFeatures[k];
++        return new Coordinate(
++            interp(x0, x1, t),
++            interp(y0, y1, t),
++            this.tileZoom);
++    },
+ 
+-        if (!text) {
+-            add(k);
+-            continue;
+-        }
++    /**
++     * Given a coordinate, return the screen point that corresponds to it
++     * @param {Coordinate} coord
++     * @returns {Point} screen point
++     * @private
++     */
++    coordinatePoint: function(coord) {
++        var matrix = this.coordinatePointMatrix(coord.zoom);
++        var p = [coord.column, coord.row, 0, 1];
++        vec4.transformMat4(p, p, matrix);
++        return new Point(p[0] / p[3], p[1] / p[3]);
++    },
+ 
+-        var leftKey = getKey(text, geom),
+-            rightKey = getKey(text, geom, true);
++    coordinatePointMatrix: function(z) {
++        var proj = mat4.copy(new Float64Array(16), this.projMatrix);
++        var scale = this.worldSize / this.zoomScale(z);
++        mat4.scale(proj, proj, [scale, scale, 1]);
++        mat4.multiply(proj, this.getPixelMatrix(), proj);
++        return proj;
++    },
+ 
+-        if ((leftKey in rightIndex) && (rightKey in leftIndex) && (rightIndex[leftKey] !== leftIndex[rightKey])) {
+-            // found lines with the same text adjacent to both ends of the current line, merge all three
+-            var j = mergeFromLeft(leftKey, rightKey, geom);
+-            var i = mergeFromRight(leftKey, rightKey, mergedGeom[j]);
++    /**
++     * converts gl coordinates -1..1 to pixels 0..width
++     * @returns {Object} matrix
++     * @private
++     */
++    getPixelMatrix: function() {
++        var m = mat4.create();
++        mat4.scale(m, m, [this.width / 2, -this.height / 2, 1]);
++        mat4.translate(m, m, [1, -1, 0]);
++        return m;
++    },
+ 
+-            delete leftIndex[leftKey];
+-            delete rightIndex[rightKey];
++    /**
++     * Calculate the posMatrix that, given a tile coordinate, would be used to display the tile on a map.
++     * @param {TileCoord|Coordinate} coord
++     * @param {Number} maxZoom maximum source zoom to account for overscaling
++     * @private
++     */
++    calculatePosMatrix: function(coord, maxZoom) {
++        if (maxZoom === undefined) maxZoom = Infinity;
++        if (coord instanceof TileCoord) coord = coord.toCoordinate(maxZoom);
+ 
+-            rightIndex[getKey(text, mergedGeom[i], true)] = i;
+-            mergedGeom[j] = null;
++        // Initialize model-view matrix that converts from the tile coordinates to screen coordinates.
+ 
+-        } else if (leftKey in rightIndex) {
+-            // found mergeable line adjacent to the start of the current line, merge
+-            mergeFromRight(leftKey, rightKey, geom);
++        // if z > maxzoom then the tile is actually a overscaled maxzoom tile,
++        // so calculate the matrix the maxzoom tile would use.
++        var z = Math.min(coord.zoom, maxZoom);
+ 
+-        } else if (rightKey in leftIndex) {
+-            // found mergeable line adjacent to the end of the current line, merge
+-            mergeFromLeft(leftKey, rightKey, geom);
++        var scale = this.worldSize / Math.pow(2, z);
++        var posMatrix = new Float64Array(16);
+ 
+-        } else {
+-            // no adjacent lines, add as a new item
+-            add(k);
+-            leftIndex[leftKey] = mergedIndex - 1;
+-            rightIndex[rightKey] = mergedIndex - 1;
+-        }
+-    }
++        mat4.identity(posMatrix);
++        mat4.translate(posMatrix, posMatrix, [coord.column * scale, coord.row * scale, 0]);
++        mat4.scale(posMatrix, posMatrix, [ scale / EXTENT, scale / EXTENT, 1 ]);
++        mat4.multiply(posMatrix, this.projMatrix, posMatrix);
+ 
+-    return {
+-        features: mergedFeatures,
+-        textFeatures: mergedTexts,
+-        geometries: mergedGeom
+-    };
+-};
++        return new Float32Array(posMatrix);
++    },
+ 
+-},{}],83:[function(require,module,exports){
+-'use strict';
++    _constrain: function() {
++        if (!this.center || !this.width || !this.height || this._constraining) return;
+ 
+-var Point = require('point-geometry');
++        this._constraining = true;
+ 
+-module.exports = {
+-    getIconQuads: getIconQuads,
+-    getGlyphQuads: getGlyphQuads
+-};
++        var minY, maxY, minX, maxX, sy, sx, x2, y2,
++            size = this.size,
++            unmodified = this._unmodified;
+ 
+-var minScale = 0.5; // underscale by 1 zoom level
++        if (this.latRange) {
++            minY = this.latY(this.latRange[1]);
++            maxY = this.latY(this.latRange[0]);
++            sy = maxY - minY < size.y ? size.y / (maxY - minY) : 0;
++        }
+ 
+-/**
+- * A textured quad for rendering a single icon or glyph.
+- *
+- * The zoom range the glyph can be shown is defined by minScale and maxScale.
+- *
+- * @param {Point} anchorPoint the point the symbol is anchored around
+- * @param {Point} tl The offset of the top left corner from the anchor.
+- * @param {Point} tr The offset of the top right corner from the anchor.
+- * @param {Point} bl The offset of the bottom left corner from the anchor.
+- * @param {Point} br The offset of the bottom right corner from the anchor.
+- * @param {Object} tex The texture coordinates.
+- * @param {number} angle The angle of the label at it's center, not the angle of this quad.
+- * @param {number} minScale The minimum scale, relative to the tile's intended scale, that the glyph can be shown at.
+- * @param {number} maxScale The maximum scale, relative to the tile's intended scale, that the glyph can be shown at.
+- *
+- * @class SymbolQuad
+- * @private
+- */
+-function SymbolQuad(anchorPoint, tl, tr, bl, br, tex, angle, minScale, maxScale) {
+-    this.anchorPoint = anchorPoint;
+-    this.tl = tl;
+-    this.tr = tr;
+-    this.bl = bl;
+-    this.br = br;
+-    this.tex = tex;
+-    this.angle = angle;
+-    this.minScale = minScale;
+-    this.maxScale = maxScale;
+-}
++        if (this.lngRange) {
++            minX = this.lngX(this.lngRange[0]);
++            maxX = this.lngX(this.lngRange[1]);
++            sx = maxX - minX < size.x ? size.x / (maxX - minX) : 0;
++        }
+ 
+-/**
+- * Create the quads used for rendering an icon.
+- *
+- * @param {Anchor} anchor
+- * @param {PositionedIcon} shapedIcon
+- * @param {number} boxScale A magic number for converting glyph metric units to geometry units.
+- * @param {Array<Array<Point>>} line
+- * @param {LayoutProperties} layout
+- * @param {boolean} alongLine Whether the icon should be placed along the line.
+- * @returns {Array<SymbolQuad>}
+- * @private
+- */
+-function getIconQuads(anchor, shapedIcon, boxScale, line, layout, alongLine) {
++        // how much the map should scale to fit the screen into given latitude/longitude ranges
++        var s = Math.max(sx || 0, sy || 0);
+ 
+-    var rect = shapedIcon.image.rect;
++        if (s) {
++            this.center = this.unproject(new Point(
++                sx ? (maxX + minX) / 2 : this.x,
++                sy ? (maxY + minY) / 2 : this.y));
++            this.zoom += this.scaleZoom(s);
++            this._unmodified = unmodified;
++            this._constraining = false;
++            return;
++        }
+ 
+-    var border = 1;
+-    var left = shapedIcon.left - border;
+-    var right = left + rect.w / shapedIcon.image.pixelRatio;
+-    var top = shapedIcon.top - border;
+-    var bottom = top + rect.h / shapedIcon.image.pixelRatio;
+-    var tl = new Point(left, top);
+-    var tr = new Point(right, top);
+-    var br = new Point(right, bottom);
+-    var bl = new Point(left, bottom);
++        if (this.latRange) {
++            var y = this.y,
++                h2 = size.y / 2;
+ 
+-    var angle = layout['icon-rotate'] * Math.PI / 180;
+-    if (alongLine) {
+-        var prev = line[anchor.segment];
+-        if (anchor.y === prev.y && anchor.x === prev.x && anchor.segment + 1 < line.length) {
+-            var next = line[anchor.segment + 1];
+-            angle += Math.atan2(anchor.y - next.y, anchor.x - next.x) + Math.PI;
+-        } else {
+-            angle += Math.atan2(anchor.y - prev.y, anchor.x - prev.x);
++            if (y - h2 < minY) y2 = minY + h2;
++            if (y + h2 > maxY) y2 = maxY - h2;
+         }
+-    }
+-
+-    if (angle) {
+-        var sin = Math.sin(angle),
+-            cos = Math.cos(angle),
+-            matrix = [cos, -sin, sin, cos];
+ 
+-        tl = tl.matMult(matrix);
+-        tr = tr.matMult(matrix);
+-        bl = bl.matMult(matrix);
+-        br = br.matMult(matrix);
+-    }
++        if (this.lngRange) {
++            var x = this.x,
++                w2 = size.x / 2;
+ 
+-    return [new SymbolQuad(new Point(anchor.x, anchor.y), tl, tr, bl, br, shapedIcon.image.rect, 0, minScale, Infinity)];
+-}
++            if (x - w2 < minX) x2 = minX + w2;
++            if (x + w2 > maxX) x2 = maxX - w2;
++        }
+ 
+-/**
+- * Create the quads used for rendering a text label.
+- *
+- * @param {Anchor} anchor
+- * @param {Shaping} shaping
+- * @param {number} boxScale A magic number for converting from glyph metric units to geometry units.
+- * @param {Array<Array<Point>>} line
+- * @param {LayoutProperties} layout
+- * @param {boolean} alongLine Whether the label should be placed along the line.
+- * @returns {Array<SymbolQuad>}
+- * @private
+- */
+-function getGlyphQuads(anchor, shaping, boxScale, line, layout, alongLine) {
++        // pan the map if the screen goes off the range
++        if (x2 !== undefined || y2 !== undefined) {
++            this.center = this.unproject(new Point(
++                x2 !== undefined ? x2 : this.x,
++                y2 !== undefined ? y2 : this.y));
++        }
+ 
+-    var textRotate = layout['text-rotate'] * Math.PI / 180;
+-    var keepUpright = layout['text-keep-upright'];
++        this._unmodified = unmodified;
++        this._constraining = false;
++    },
+ 
+-    var positionedGlyphs = shaping.positionedGlyphs;
+-    var quads = [];
++    _calcProjMatrix: function() {
++        var m = new Float64Array(16);
+ 
+-    for (var k = 0; k < positionedGlyphs.length; k++) {
+-        var positionedGlyph = positionedGlyphs[k];
+-        var glyph = positionedGlyph.glyph;
+-        var rect = glyph.rect;
++        // Find the distance from the center point to the center top in altitude units using law of sines.
++        var halfFov = Math.atan(0.5 / this.altitude);
++        var topHalfSurfaceDistance = Math.sin(halfFov) * this.altitude / Math.sin(Math.PI / 2 - this._pitch - halfFov);
+ 
+-        if (!rect) continue;
++        // Calculate z value of the farthest fragment that should be rendered.
++        var farZ = Math.cos(Math.PI / 2 - this._pitch) * topHalfSurfaceDistance + this.altitude;
+ 
+-        var centerX = (positionedGlyph.x + glyph.advance / 2) * boxScale;
++        mat4.perspective(m, 2 * Math.atan((this.height / 2) / this.altitude), this.width / this.height, 0.1, farZ);
+ 
+-        var glyphInstances;
+-        var labelMinScale = minScale;
+-        if (alongLine) {
+-            glyphInstances = [];
+-            labelMinScale = getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, true);
+-            if (keepUpright) {
+-                labelMinScale = Math.min(labelMinScale, getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, false));
+-            }
++        mat4.translate(m, m, [0, 0, -this.altitude]);
+ 
+-        } else {
+-            glyphInstances = [{
+-                anchorPoint: new Point(anchor.x, anchor.y),
+-                offset: 0,
+-                angle: 0,
+-                maxScale: Infinity,
+-                minScale: minScale
+-            }];
+-        }
++        // After the rotateX, z values are in pixel units. Convert them to
++        // altitude units. 1 altitude unit = the screen height.
++        mat4.scale(m, m, [1, -1, 1 / this.height]);
+ 
+-        var x1 = positionedGlyph.x + glyph.left,
+-            y1 = positionedGlyph.y - glyph.top,
+-            x2 = x1 + rect.w,
+-            y2 = y1 + rect.h,
++        mat4.rotateX(m, m, this._pitch);
++        mat4.rotateZ(m, m, this.angle);
++        mat4.translate(m, m, [-this.x, -this.y, 0]);
+ 
+-            otl = new Point(x1, y1),
+-            otr = new Point(x2, y1),
+-            obl = new Point(x1, y2),
+-            obr = new Point(x2, y2);
++        this.projMatrix = m;
++    }
++};
+ 
+-        for (var i = 0; i < glyphInstances.length; i++) {
++},{"../data/bucket":67,"../source/tile_coord":101,"../util/interpolate":163,"../util/util":169,"./coordinate":75,"./lng_lat":76,"gl-matrix":24,"point-geometry":174}],79:[function(require,module,exports){
++'use strict';
+ 
+-            var instance = glyphInstances[i],
+-                tl = otl,
+-                tr = otr,
+-                bl = obl,
+-                br = obr,
+-                angle = instance.angle + textRotate;
++// Font data From Hershey Simplex Font
++// http://paulbourke.net/dataformats/hershey/
++var simplexFont = {
++    " ": [16, []],
++    "!": [10, [5, 21, 5, 7, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
++    "\"": [16, [4, 21, 4, 14, -1, -1, 12, 21, 12, 14]],
++    "#": [21, [11, 25, 4, -7, -1, -1, 17, 25, 10, -7, -1, -1, 4, 12, 18, 12, -1, -1, 3, 6, 17, 6]],
++    "$": [20, [8, 25, 8, -4, -1, -1, 12, 25, 12, -4, -1, -1, 17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
++    "%": [24, [21, 21, 3, 0, -1, -1, 8, 21, 10, 19, 10, 17, 9, 15, 7, 14, 5, 14, 3, 16, 3, 18, 4, 20, 6, 21, 8, 21, 10, 20, 13, 19, 16, 19, 19, 20, 21, 21, -1, -1, 17, 7, 15, 6, 14, 4, 14, 2, 16, 0, 18, 0, 20, 1, 21, 3, 21, 5, 19, 7, 17, 7]],
++    "&": [26, [23, 12, 23, 13, 22, 14, 21, 14, 20, 13, 19, 11, 17, 6, 15, 3, 13, 1, 11, 0, 7, 0, 5, 1, 4, 2, 3, 4, 3, 6, 4, 8, 5, 9, 12, 13, 13, 14, 14, 16, 14, 18, 13, 20, 11, 21, 9, 20, 8, 18, 8, 16, 9, 13, 11, 10, 16, 3, 18, 1, 20, 0, 22, 0, 23, 1, 23, 2]],
++    "'": [10, [5, 19, 4, 20, 5, 21, 6, 20, 6, 18, 5, 16, 4, 15]],
++    "(": [14, [11, 25, 9, 23, 7, 20, 5, 16, 4, 11, 4, 7, 5, 2, 7, -2, 9, -5, 11, -7]],
++    ")": [14, [3, 25, 5, 23, 7, 20, 9, 16, 10, 11, 10, 7, 9, 2, 7, -2, 5, -5, 3, -7]],
++    "*": [16, [8, 21, 8, 9, -1, -1, 3, 18, 13, 12, -1, -1, 13, 18, 3, 12]],
++    "+": [26, [13, 18, 13, 0, -1, -1, 4, 9, 22, 9]],
++    ",": [10, [6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
++    "-": [26, [4, 9, 22, 9]],
++    ".": [10, [5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
++    "/": [22, [20, 25, 2, -7]],
++    "0": [20, [9, 21, 6, 20, 4, 17, 3, 12, 3, 9, 4, 4, 6, 1, 9, 0, 11, 0, 14, 1, 16, 4, 17, 9, 17, 12, 16, 17, 14, 20, 11, 21, 9, 21]],
++    "1": [20, [6, 17, 8, 18, 11, 21, 11, 0]],
++    "2": [20, [4, 16, 4, 17, 5, 19, 6, 20, 8, 21, 12, 21, 14, 20, 15, 19, 16, 17, 16, 15, 15, 13, 13, 10, 3, 0, 17, 0]],
++    "3": [20, [5, 21, 16, 21, 10, 13, 13, 13, 15, 12, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
++    "4": [20, [13, 21, 3, 7, 18, 7, -1, -1, 13, 21, 13, 0]],
++    "5": [20, [15, 21, 5, 21, 4, 12, 5, 13, 8, 14, 11, 14, 14, 13, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
++    "6": [20, [16, 18, 15, 20, 12, 21, 10, 21, 7, 20, 5, 17, 4, 12, 4, 7, 5, 3, 7, 1, 10, 0, 11, 0, 14, 1, 16, 3, 17, 6, 17, 7, 16, 10, 14, 12, 11, 13, 10, 13, 7, 12, 5, 10, 4, 7]],
++    "7": [20, [17, 21, 7, 0, -1, -1, 3, 21, 17, 21]],
++    "8": [20, [8, 21, 5, 20, 4, 18, 4, 16, 5, 14, 7, 13, 11, 12, 14, 11, 16, 9, 17, 7, 17, 4, 16, 2, 15, 1, 12, 0, 8, 0, 5, 1, 4, 2, 3, 4, 3, 7, 4, 9, 6, 11, 9, 12, 13, 13, 15, 14, 16, 16, 16, 18, 15, 20, 12, 21, 8, 21]],
++    "9": [20, [16, 14, 15, 11, 13, 9, 10, 8, 9, 8, 6, 9, 4, 11, 3, 14, 3, 15, 4, 18, 6, 20, 9, 21, 10, 21, 13, 20, 15, 18, 16, 14, 16, 9, 15, 4, 13, 1, 10, 0, 8, 0, 5, 1, 4, 3]],
++    ":": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
++    ";": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
++    "<": [24, [20, 18, 4, 9, 20, 0]],
++    "=": [26, [4, 12, 22, 12, -1, -1, 4, 6, 22, 6]],
++    ">": [24, [4, 18, 20, 9, 4, 0]],
++    "?": [18, [3, 16, 3, 17, 4, 19, 5, 20, 7, 21, 11, 21, 13, 20, 14, 19, 15, 17, 15, 15, 14, 13, 13, 12, 9, 10, 9, 7, -1, -1, 9, 2, 8, 1, 9, 0, 10, 1, 9, 2]],
++    "@": [27, [18, 13, 17, 15, 15, 16, 12, 16, 10, 15, 9, 14, 8, 11, 8, 8, 9, 6, 11, 5, 14, 5, 16, 6, 17, 8, -1, -1, 12, 16, 10, 14, 9, 11, 9, 8, 10, 6, 11, 5, -1, -1, 18, 16, 17, 8, 17, 6, 19, 5, 21, 5, 23, 7, 24, 10, 24, 12, 23, 15, 22, 17, 20, 19, 18, 20, 15, 21, 12, 21, 9, 20, 7, 19, 5, 17, 4, 15, 3, 12, 3, 9, 4, 6, 5, 4, 7, 2, 9, 1, 12, 0, 15, 0, 18, 1, 20, 2, 21, 3, -1, -1, 19, 16, 18, 8, 18, 6, 19, 5]],
++    "A": [18, [9, 21, 1, 0, -1, -1, 9, 21, 17, 0, -1, -1, 4, 7, 14, 7]],
++    "B": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, -1, -1, 4, 11, 13, 11, 16, 10, 17, 9, 18, 7, 18, 4, 17, 2, 16, 1, 13, 0, 4, 0]],
++    "C": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5]],
++    "D": [21, [4, 21, 4, 0, -1, -1, 4, 21, 11, 21, 14, 20, 16, 18, 17, 16, 18, 13, 18, 8, 17, 5, 16, 3, 14, 1, 11, 0, 4, 0]],
++    "E": [19, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11, -1, -1, 4, 0, 17, 0]],
++    "F": [18, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11]],
++    "G": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 18, 8, -1, -1, 13, 8, 18, 8]],
++    "H": [22, [4, 21, 4, 0, -1, -1, 18, 21, 18, 0, -1, -1, 4, 11, 18, 11]],
++    "I": [8, [4, 21, 4, 0]],
++    "J": [16, [12, 21, 12, 5, 11, 2, 10, 1, 8, 0, 6, 0, 4, 1, 3, 2, 2, 5, 2, 7]],
++    "K": [21, [4, 21, 4, 0, -1, -1, 18, 21, 4, 7, -1, -1, 9, 12, 18, 0]],
++    "L": [17, [4, 21, 4, 0, -1, -1, 4, 0, 16, 0]],
++    "M": [24, [4, 21, 4, 0, -1, -1, 4, 21, 12, 0, -1, -1, 20, 21, 12, 0, -1, -1, 20, 21, 20, 0]],
++    "N": [22, [4, 21, 4, 0, -1, -1, 4, 21, 18, 0, -1, -1, 18, 21, 18, 0]],
++    "O": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21]],
++    "P": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 14, 17, 12, 16, 11, 13, 10, 4, 10]],
++    "Q": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21, -1, -1, 12, 4, 18, -2]],
++    "R": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, 4, 11, -1, -1, 11, 11, 18, 0]],
++    "S": [20, [17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
++    "T": [16, [8, 21, 8, 0, -1, -1, 1, 21, 15, 21]],
++    "U": [22, [4, 21, 4, 6, 5, 3, 7, 1, 10, 0, 12, 0, 15, 1, 17, 3, 18, 6, 18, 21]],
++    "V": [18, [1, 21, 9, 0, -1, -1, 17, 21, 9, 0]],
++    "W": [24, [2, 21, 7, 0, -1, -1, 12, 21, 7, 0, -1, -1, 12, 21, 17, 0, -1, -1, 22, 21, 17, 0]],
++    "X": [20, [3, 21, 17, 0, -1, -1, 17, 21, 3, 0]],
++    "Y": [18, [1, 21, 9, 11, 9, 0, -1, -1, 17, 21, 9, 11]],
++    "Z": [20, [17, 21, 3, 0, -1, -1, 3, 21, 17, 21, -1, -1, 3, 0, 17, 0]],
++    "[": [14, [4, 25, 4, -7, -1, -1, 5, 25, 5, -7, -1, -1, 4, 25, 11, 25, -1, -1, 4, -7, 11, -7]],
++    "\\": [14, [0, 21, 14, -3]],
++    "]": [14, [9, 25, 9, -7, -1, -1, 10, 25, 10, -7, -1, -1, 3, 25, 10, 25, -1, -1, 3, -7, 10, -7]],
++    "^": [16, [6, 15, 8, 18, 10, 15, -1, -1, 3, 12, 8, 17, 13, 12, -1, -1, 8, 17, 8, 0]],
++    "_": [16, [0, -2, 16, -2]],
++    "`": [10, [6, 21, 5, 20, 4, 18, 4, 16, 5, 15, 6, 16, 5, 17]],
++    "a": [19, [15, 14, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "b": [19, [4, 21, 4, 0, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
++    "c": [18, [15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "d": [19, [15, 21, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "e": [18, [3, 8, 15, 8, 15, 10, 14, 12, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "f": [12, [10, 21, 8, 21, 6, 20, 5, 17, 5, 0, -1, -1, 2, 14, 9, 14]],
++    "g": [19, [15, 14, 15, -2, 14, -5, 13, -6, 11, -7, 8, -7, 6, -6, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "h": [19, [4, 21, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
++    "i": [8, [3, 21, 4, 20, 5, 21, 4, 22, 3, 21, -1, -1, 4, 14, 4, 0]],
++    "j": [10, [5, 21, 6, 20, 7, 21, 6, 22, 5, 21, -1, -1, 6, 14, 6, -3, 5, -6, 3, -7, 1, -7]],
++    "k": [17, [4, 21, 4, 0, -1, -1, 14, 14, 4, 4, -1, -1, 8, 8, 15, 0]],
++    "l": [8, [4, 21, 4, 0]],
++    "m": [30, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0, -1, -1, 15, 10, 18, 13, 20, 14, 23, 14, 25, 13, 26, 10, 26, 0]],
++    "n": [19, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
++    "o": [19, [8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3, 16, 6, 16, 8, 15, 11, 13, 13, 11, 14, 8, 14]],
++    "p": [19, [4, 14, 4, -7, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
++    "q": [19, [15, 14, 15, -7, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "r": [13, [4, 14, 4, 0, -1, -1, 4, 8, 5, 11, 7, 13, 9, 14, 12, 14]],
++    "s": [17, [14, 11, 13, 13, 10, 14, 7, 14, 4, 13, 3, 11, 4, 9, 6, 8, 11, 7, 13, 6, 14, 4, 14, 3, 13, 1, 10, 0, 7, 0, 4, 1, 3, 3]],
++    "t": [12, [5, 21, 5, 4, 6, 1, 8, 0, 10, 0, -1, -1, 2, 14, 9, 14]],
++    "u": [19, [4, 14, 4, 4, 5, 1, 7, 0, 10, 0, 12, 1, 15, 4, -1, -1, 15, 14, 15, 0]],
++    "v": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0]],
++    "w": [22, [3, 14, 7, 0, -1, -1, 11, 14, 7, 0, -1, -1, 11, 14, 15, 0, -1, -1, 19, 14, 15, 0]],
++    "x": [17, [3, 14, 14, 0, -1, -1, 14, 14, 3, 0]],
++    "y": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0, 6, -4, 4, -6, 2, -7, 1, -7]],
++    "z": [17, [14, 14, 3, 0, -1, -1, 3, 14, 14, 14, -1, -1, 3, 0, 14, 0]],
++    "{": [14, [9, 25, 7, 24, 6, 23, 5, 21, 5, 19, 6, 17, 7, 16, 8, 14, 8, 12, 6, 10, -1, -1, 7, 24, 6, 22, 6, 20, 7, 18, 8, 17, 9, 15, 9, 13, 8, 11, 4, 9, 8, 7, 9, 5, 9, 3, 8, 1, 7, 0, 6, -2, 6, -4, 7, -6, -1, -1, 6, 8, 8, 6, 8, 4, 7, 2, 6, 1, 5, -1, 5, -3, 6, -5, 7, -6, 9, -7]],
++    "|": [8, [4, 25, 4, -7]],
++    "}": [14, [5, 25, 7, 24, 8, 23, 9, 21, 9, 19, 8, 17, 7, 16, 6, 14, 6, 12, 8, 10, -1, -1, 7, 24, 8, 22, 8, 20, 7, 18, 6, 17, 5, 15, 5, 13, 6, 11, 10, 9, 6, 7, 5, 5, 5, 3, 6, 1, 7, 0, 8, -2, 8, -4, 7, -6, -1, -1, 8, 8, 6, 6, 6, 4, 7, 2, 8, 1, 9, -1, 9, -3, 8, -5, 7, -6, 5, -7]],
++    "~": [24, [3, 6, 3, 8, 4, 11, 6, 12, 8, 12, 10, 11, 14, 8, 16, 7, 18, 7, 20, 8, 21, 10, -1, -1, 3, 8, 4, 10, 6, 11, 8, 11, 10, 10, 14, 7, 16, 6, 18, 6, 20, 7, 21, 10, 21, 12]]
++};
+ 
+-            if (angle) {
+-                var sin = Math.sin(angle),
+-                    cos = Math.cos(angle),
+-                    matrix = [cos, -sin, sin, cos];
++module.exports = function textVertices(text, left, baseline, scale) {
++    scale = scale || 1;
+ 
+-                tl = tl.matMult(matrix);
+-                tr = tr.matMult(matrix);
+-                bl = bl.matMult(matrix);
+-                br = br.matMult(matrix);
+-            }
++    var strokes = [],
++        i, len, j, len2, glyph, x, y, prev;
+ 
+-            // Prevent label from extending past the end of the line
+-            var glyphMinScale = Math.max(instance.minScale, labelMinScale);
++    for (i = 0, len = text.length; i < len; i++) {
++        glyph = simplexFont[text[i]];
++        if (!glyph) continue;
++        prev = null;
+ 
+-            var glyphAngle = (anchor.angle + textRotate + instance.offset + 2 * Math.PI) % (2 * Math.PI);
+-            quads.push(new SymbolQuad(instance.anchorPoint, tl, tr, bl, br, rect, glyphAngle, glyphMinScale, instance.maxScale));
++        for (j = 0, len2 = glyph[1].length; j < len2; j += 2) {
++            if (glyph[1][j] === -1 && glyph[1][j + 1] === -1) {
++                prev = null;
+ 
++            } else {
++                x = left + glyph[1][j] * scale;
++                y = baseline - glyph[1][j + 1] * scale;
++                if (prev) {
++                    strokes.push(prev.x, prev.y, x, y);
++                }
++                prev = {x: x, y: y};
++            }
+         }
++        left += glyph[0] * scale;
+     }
+ 
+-    return quads;
+-}
++    return strokes;
++};
++
++},{}],80:[function(require,module,exports){
++'use strict';
+ 
+ /**
+- * We can only render glyph quads that slide along a straight line. To draw
+- * curved lines we need an instance of a glyph for each segment it appears on.
+- * This creates all the instances of a glyph that are necessary to render a label.
+- *
+- * We need a
+- * @param {Array<Object>} glyphInstances An empty array that glyphInstances are added to.
+- * @param {Anchor} anchor
+- * @param {number} offset The glyph's offset from the center of the label.
+- * @param {Array<Point>} line
+- * @param {number} segment The index of the segment of the line on which the anchor exists.
+- * @param {boolean} forward If true get the glyphs that come later on the line, otherwise get the glyphs that come earlier.
++ * mapboxgl is a A WebGL JavaScript interactive maps library that can render
++ * [Mapbox vector tiles](https://www.mapbox.com/blog/vector-tiles/).
+  *
+- * @returns {Array<Object>} glyphInstances
+- * @private
++ * @module mapboxgl
++ * @summary WebGL JavaScript map library
+  */
+-function getSegmentGlyphs(glyphs, anchor, offset, line, segment, forward) {
+-    var upsideDown = !forward;
+ 
+-    if (offset < 0) forward = !forward;
++// jshint -W079
++var mapboxgl = module.exports = {};
+ 
+-    if (forward) segment++;
++mapboxgl.Map = require('./ui/map');
++mapboxgl.Control = require('./ui/control/control');
++mapboxgl.Navigation = require('./ui/control/navigation');
++mapboxgl.Geolocate = require('./ui/control/geolocate');
++mapboxgl.Attribution = require('./ui/control/attribution');
++mapboxgl.Popup = require('./ui/popup');
+ 
+-    var newAnchorPoint = new Point(anchor.x, anchor.y);
+-    var end = line[segment];
+-    var prevScale = Infinity;
++mapboxgl.GeoJSONSource = require('./source/geojson_source');
++mapboxgl.VideoSource = require('./source/video_source');
++mapboxgl.ImageSource = require('./source/image_source');
+ 
+-    offset = Math.abs(offset);
++mapboxgl.Style = require('./style/style');
+ 
+-    var placementScale = minScale;
++mapboxgl.LngLat = require('./geo/lng_lat');
++mapboxgl.LngLatBounds = require('./geo/lng_lat_bounds');
++mapboxgl.Point = require('point-geometry');
+ 
+-    while (true) {
+-        var distance = newAnchorPoint.dist(end);
+-        var scale = offset / distance;
++mapboxgl.Evented = require('./util/evented');
++mapboxgl.util = require('./util/util');
+ 
+-        // Get the angle of the line segment
+-        var angle = Math.atan2(end.y - newAnchorPoint.y, end.x - newAnchorPoint.x);
+-        if (!forward) angle += Math.PI;
+-        if (upsideDown) angle += Math.PI;
++mapboxgl.supported = require('./util/browser').supported;
+ 
+-        glyphs.push({
+-            anchorPoint: newAnchorPoint,
+-            offset: upsideDown ? Math.PI : 0,
+-            minScale: scale,
+-            maxScale: prevScale,
+-            angle: (angle + 2 * Math.PI) % (2 * Math.PI)
+-        });
++var ajax = require('./util/ajax');
++mapboxgl.util.getJSON = ajax.getJSON;
++mapboxgl.util.getArrayBuffer = ajax.getArrayBuffer;
+ 
+-        if (scale <= placementScale) break;
++var config = require('./util/config');
++mapboxgl.config = config;
+ 
+-        newAnchorPoint = end;
++Object.defineProperty(mapboxgl, 'accessToken', {
++    get: function() { return config.ACCESS_TOKEN; },
++    set: function(token) { config.ACCESS_TOKEN = token; }
++});
+ 
+-        // skip duplicate nodes
+-        while (newAnchorPoint.equals(end)) {
+-            segment += forward ? 1 : -1;
+-            end = line[segment];
+-            if (!end) {
+-                return scale;
+-            }
+-        }
++},{"./geo/lng_lat":76,"./geo/lng_lat_bounds":77,"./source/geojson_source":94,"./source/image_source":96,"./source/video_source":104,"./style/style":110,"./ui/control/attribution":138,"./ui/control/control":139,"./ui/control/geolocate":140,"./ui/control/navigation":141,"./ui/map":151,"./ui/popup":152,"./util/ajax":154,"./util/browser":155,"./util/config":159,"./util/evented":161,"./util/util":169,"point-geometry":174}],81:[function(require,module,exports){
++'use strict';
+ 
+-        var unit = end.sub(newAnchorPoint)._unit();
+-        newAnchorPoint = newAnchorPoint.sub(unit._mult(distance));
++var TilePyramid = require('../source/tile_pyramid');
++var pyramid = new TilePyramid({ tileSize: 512 });
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-        prevScale = scale;
+-    }
++module.exports = drawBackground;
+ 
+-    return placementScale;
+-}
++function drawBackground(painter, source, layer) {
++    var gl = painter.gl;
++    var transform = painter.transform;
++    var color = util.premultiply(layer.paint['background-color']);
++    var image = layer.paint['background-pattern'];
++    var opacity = layer.paint['background-opacity'];
++    var program;
+ 
+-},{"point-geometry":174}],84:[function(require,module,exports){
+-'use strict';
++    var imagePosA = image ? painter.spriteAtlas.getPosition(image.from, true) : null;
++    var imagePosB = image ? painter.spriteAtlas.getPosition(image.to, true) : null;
+ 
+-var resolveTokens = require('../util/token');
++    painter.setDepthSublayer(0);
++    if (imagePosA && imagePosB) {
+ 
+-module.exports = resolveText;
++        if (painter.isOpaquePass) return;
+ 
+-/**
+- * For an array of features determine what glyphs need to be loaded
+- * and apply any text preprocessing. The remaining users of text should
+- * use the `textFeatures` key returned by this function rather than accessing
+- * feature text directly.
+- * @private
+- */
+-function resolveText(features, layoutProperties, codepoints) {
+-    var textFeatures = [];
++        // Draw texture fill
++        program = painter.useProgram('pattern');
++        gl.uniform1i(program.u_image, 0);
++        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
++        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
++        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
++        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
++        gl.uniform1f(program.u_opacity, opacity);
+ 
+-    for (var i = 0, fl = features.length; i < fl; i++) {
+-        var text = resolveTokens(features[i].properties, layoutProperties['text-field']);
+-        if (!text) {
+-            textFeatures[i] = null;
+-            continue;
+-        }
+-        text = text.toString();
++        gl.uniform1f(program.u_mix, image.t);
+ 
+-        var transform = layoutProperties['text-transform'];
+-        if (transform === 'uppercase') {
+-            text = text.toLocaleUpperCase();
+-        } else if (transform === 'lowercase') {
+-            text = text.toLocaleLowerCase();
+-        }
++        painter.spriteAtlas.bind(gl, true);
+ 
+-        for (var j = 0; j < text.length; j++) {
+-            codepoints[text.charCodeAt(j)] = true;
+-        }
++        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
++    } else {
++        // Draw filling rectangle.
++        if (painter.isOpaquePass !== (color[3] === 1)) return;
+ 
+-        // Track indexes of features with text.
+-        textFeatures[i] = text;
++        program = painter.useProgram('fill');
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, opacity);
++        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
+     }
+ 
+-    return textFeatures;
+-}
++    gl.disable(gl.STENCIL_TEST);
+ 
+-},{"../util/token":118}],85:[function(require,module,exports){
+-'use strict';
++    // We need to draw the background in tiles in order to use calculatePosMatrix
++    // which applies the projection matrix (transform.projMatrix). Otherwise
++    // the depth and stencil buffers get into a bad state.
++    // This can be refactored into a single draw call once earcut lands and
++    // we don't have so much going on in the stencil buffer.
++    var coords = pyramid.coveringTiles(transform);
++    for (var c = 0; c < coords.length; c++) {
++        var coord = coords[c];
++        var tileSize = 512;
++        // var pixelsToTileUnitsBound = pixelsToTileUnits.bind({coord:coord, tileSize: tileSize});
++        if (imagePosA && imagePosB) {
++            var imageSizeScaledA = [
++                (imagePosA.size[0] * image.fromScale),
++                (imagePosA.size[1] * image.fromScale)
++            ];
++            var imageSizeScaledB = [
++                (imagePosB.size[0] * image.toScale),
++                (imagePosB.size[1] * image.toScale)
++            ];
++            var tile = {coord:coord, tileSize: tileSize};
+ 
+-module.exports = {
+-    shapeText: shapeText,
+-    shapeIcon: shapeIcon
+-};
++            gl.uniform2fv(program.u_patternscale_a, [
++                1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
++                1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
++            ]);
+ 
++            gl.uniform2fv(program.u_patternscale_b, [
++                1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
++                1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
++            ]);
++            var tileSizeAtNearestZoom = tileSize * Math.pow(2, painter.transform.tileZoom - coord.z);
+ 
+-// The position of a glyph relative to the text's anchor point.
+-function PositionedGlyph(codePoint, x, y, glyph) {
+-    this.codePoint = codePoint;
+-    this.x = x;
+-    this.y = y;
+-    this.glyph = glyph;
+-}
++            var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
++            var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * coord.y;
+ 
+-// A collection of positioned glyphs and some metadata
+-function Shaping(positionedGlyphs, text, top, bottom, left, right) {
+-    this.positionedGlyphs = positionedGlyphs;
+-    this.text = text;
+-    this.top = top;
+-    this.bottom = bottom;
+-    this.left = left;
+-    this.right = right;
+-}
++            var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
++            var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * coord.y;
+ 
+-function shapeText(text, glyphs, maxWidth, lineHeight, horizontalAlign, verticalAlign, justify, spacing, translate) {
++            gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
++            gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
++        }
+ 
+-    var positionedGlyphs = [];
+-    var shaping = new Shaping(positionedGlyphs, text, translate[1], translate[1], translate[0], translate[0]);
++        gl.uniformMatrix4fv(program.u_matrix, false, painter.transform.calculatePosMatrix(coord));
++        gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
++    }
+ 
+-    // the y offset *should* be part of the font metadata
+-    var yOffset = -17;
++    gl.stencilMask(0x00);
++    gl.stencilFunc(gl.EQUAL, 0x80, 0x80);
++}
+ 
+-    var x = 0;
+-    var y = yOffset;
++},{"../source/pixels_to_tile_units":97,"../source/tile_pyramid":102,"../util/util":169}],82:[function(require,module,exports){
++'use strict';
+ 
+-    for (var i = 0; i < text.length; i++) {
+-        var codePoint = text.charCodeAt(i);
+-        var glyph = glyphs[codePoint];
++var browser = require('../util/browser');
+ 
+-        if (!glyph) continue;
++module.exports = drawCircles;
+ 
+-        positionedGlyphs.push(new PositionedGlyph(codePoint, x, y, glyph));
+-        x += glyph.advance + spacing;
+-    }
++function drawCircles(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
+ 
+-    if (!positionedGlyphs.length) return false;
++    var gl = painter.gl;
+ 
+-    linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate);
++    painter.setDepthSublayer(0);
++    painter.depthMask(false);
+ 
+-    return shaping;
+-}
++    // Allow circles to be drawn across boundaries, so that
++    // large circles are not clipped to tiles
++    gl.disable(gl.STENCIL_TEST);
+ 
+-var invisible = {
+-    0x20:   true, // space
+-    0x200b: true  // zero-width space
+-};
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
+ 
+-var breakable = {
+-    0x20:   true, // space
+-    0x26:   true, // ampersand
+-    0x2b:   true, // plus sign
+-    0x2d:   true, // hyphen-minus
+-    0x2f:   true, // solidus
+-    0xad:   true, // soft hyphen
+-    0xb7:   true, // middle dot
+-    0x200b: true, // zero-width space
+-    0x2010: true, // hyphen
+-    0x2013: true  // en dash
+-};
++        var tile = source.getTile(coord);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bufferGroups = bucket.bufferGroups.circle;
++        if (!bufferGroups) continue;
+ 
+-function linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate) {
+-    var lastSafeBreak = null;
++        var program = painter.useProgram('circle', bucket.getProgramMacros('circle', layer));
+ 
+-    var lengthBeforeCurrentLine = 0;
+-    var lineStartIndex = 0;
+-    var line = 0;
++        gl.uniform2fv(program.u_extrude_scale, painter.transform.pixelsToGLUnits);
++        gl.uniform1f(program.u_blur, layer.paint['circle-blur']);
++        gl.uniform1f(program.u_devicepixelratio, browser.devicePixelRatio);
++        gl.uniform1f(program.u_opacity, layer.paint['circle-opacity']);
+ 
+-    var maxLineLength = 0;
++        gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
++            coord.posMatrix,
++            tile,
++            layer.paint['circle-translate'],
++            layer.paint['circle-translate-anchor']
++        ));
+ 
+-    var positionedGlyphs = shaping.positionedGlyphs;
++        bucket.setUniforms(gl, 'circle', program, layer, {zoom: painter.transform.zoom});
+ 
+-    if (maxWidth) {
+-        for (var i = 0; i < positionedGlyphs.length; i++) {
+-            var positionedGlyph = positionedGlyphs[i];
++        for (var k = 0; k < bufferGroups.length; k++) {
++            var group = bufferGroups[k];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element, group.paint[layer.id]);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++        }
++    }
++}
+ 
+-            positionedGlyph.x -= lengthBeforeCurrentLine;
+-            positionedGlyph.y += lineHeight * line;
++},{"../util/browser":155}],83:[function(require,module,exports){
++'use strict';
+ 
+-            if (positionedGlyph.x > maxWidth && lastSafeBreak !== null) {
++module.exports = drawCollisionDebug;
+ 
+-                var lineLength = positionedGlyphs[lastSafeBreak + 1].x;
+-                maxLineLength = Math.max(lineLength, maxLineLength);
++function drawCollisionDebug(painter, source, layer, coords) {
++    var gl = painter.gl;
++    gl.enable(gl.STENCIL_TEST);
++    var program = painter.useProgram('collisionbox');
+ 
+-                for (var k = lastSafeBreak + 1; k <= i; k++) {
+-                    positionedGlyphs[k].y += lineHeight;
+-                    positionedGlyphs[k].x -= lineLength;
+-                }
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
++        var tile = source.getTile(coord);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bufferGroups = bucket.bufferGroups.collisionBox;
+ 
+-                if (justify) {
+-                    // Collapse invisible characters.
+-                    var lineEnd = lastSafeBreak;
+-                    if (invisible[positionedGlyphs[lastSafeBreak].codePoint]) {
+-                        lineEnd--;
+-                    }
++        if (!bufferGroups || !bufferGroups.length) continue;
++        var group = bufferGroups[0];
++        if (group.layout.vertex.length === 0) continue;
+ 
+-                    justifyLine(positionedGlyphs, glyphs, lineStartIndex, lineEnd, justify);
+-                }
++        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
+ 
+-                lineStartIndex = lastSafeBreak + 1;
+-                lastSafeBreak = null;
+-                lengthBeforeCurrentLine += lineLength;
+-                line++;
+-            }
++        painter.enableTileClippingMask(coord);
+ 
+-            if (breakable[positionedGlyph.codePoint]) {
+-                lastSafeBreak = i;
+-            }
+-        }
+-    }
++        painter.lineWidth(1);
++        gl.uniform1f(program.u_scale, Math.pow(2, painter.transform.zoom - tile.coord.z));
++        gl.uniform1f(program.u_zoom, painter.transform.zoom * 10);
++        gl.uniform1f(program.u_maxzoom, (tile.coord.z + 1) * 10);
+ 
+-    var lastPositionedGlyph = positionedGlyphs[positionedGlyphs.length - 1];
+-    var lastLineLength = lastPositionedGlyph.x + glyphs[lastPositionedGlyph.codePoint].advance;
+-    maxLineLength = Math.max(maxLineLength, lastLineLength);
++        group.vaos[layer.id].bind(gl, program, group.layout.vertex);
++        gl.drawArrays(gl.LINES, 0, group.layout.vertex.length);
++    }
++}
+ 
+-    var height = (line + 1) * lineHeight;
++},{}],84:[function(require,module,exports){
++'use strict';
+ 
+-    justifyLine(positionedGlyphs, glyphs, lineStartIndex, positionedGlyphs.length - 1, justify);
+-    align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate);
++var textVertices = require('../lib/debugtext');
++var browser = require('../util/browser');
++var mat4 = require('gl-matrix').mat4;
++var EXTENT = require('../data/bucket').EXTENT;
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('./vertex_array_object');
+ 
+-    // Calculate the bounding box
+-    shaping.top += -verticalAlign * height;
+-    shaping.bottom = shaping.top + height;
+-    shaping.left += -horizontalAlign * maxLineLength;
+-    shaping.right = shaping.left + maxLineLength;
+-}
++module.exports = drawDebug;
+ 
+-function justifyLine(positionedGlyphs, glyphs, start, end, justify) {
+-    var lastAdvance = glyphs[positionedGlyphs[end].codePoint].advance;
+-    var lineIndent = (positionedGlyphs[end].x + lastAdvance) * justify;
++function drawDebug(painter, source, coords) {
++    if (painter.isOpaquePass) return;
++    if (!painter.options.debug) return;
+ 
+-    for (var j = start; j <= end; j++) {
+-        positionedGlyphs[j].x -= lineIndent;
++    for (var i = 0; i < coords.length; i++) {
++        drawDebugTile(painter, source, coords[i]);
+     }
+-
+ }
+ 
+-function align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate) {
+-    var shiftX = (justify - horizontalAlign) * maxLineLength + translate[0];
+-    var shiftY = (-verticalAlign * (line + 1) + 0.5) * lineHeight + translate[1];
++function drawDebugTile(painter, source, coord) {
++    var gl = painter.gl;
+ 
+-    for (var j = 0; j < positionedGlyphs.length; j++) {
+-        positionedGlyphs[j].x += shiftX;
+-        positionedGlyphs[j].y += shiftY;
+-    }
+-}
++    gl.disable(gl.STENCIL_TEST);
++    painter.lineWidth(1 * browser.devicePixelRatio);
+ 
++    var posMatrix = coord.posMatrix;
++    var program = painter.useProgram('debug');
+ 
+-function shapeIcon(image, layout) {
+-    if (!image || !image.rect) return null;
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++    gl.uniform4f(program.u_color, 1, 0, 0, 1);
++    painter.debugVAO.bind(gl, program, painter.debugBuffer);
++    gl.drawArrays(gl.LINE_STRIP, 0, painter.debugBuffer.length);
+ 
+-    var dx = layout['icon-offset'][0];
+-    var dy = layout['icon-offset'][1];
+-    var x1 = dx - image.width / 2;
+-    var x2 = x1 + image.width;
+-    var y1 = dy - image.height / 2;
+-    var y2 = y1 + image.height;
++    var vertices = textVertices(coord.toString(), 50, 200, 5);
++    var debugTextArray = new painter.PosArray();
++    for (var v = 0; v < vertices.length; v += 2) {
++        debugTextArray.emplaceBack(vertices[v], vertices[v + 1]);
++    }
++    var debugTextBuffer = new Buffer(debugTextArray.serialize(), painter.PosArray.serialize(), Buffer.BufferType.VERTEX);
++    var debugTextVAO = new VertexArrayObject();
++    debugTextVAO.bind(gl, program, debugTextBuffer);
++    gl.uniform4f(program.u_color, 1, 1, 1, 1);
+ 
+-    return new PositionedIcon(image, y1, y2, x1, x2);
+-}
++    // Draw the halo with multiple 1px lines instead of one wider line because
++    // the gl spec doesn't guarantee support for lines with width > 1.
++    var tileSize = source.getTile(coord).tileSize;
++    var onePixel = EXTENT / (Math.pow(2, painter.transform.zoom - coord.z) * tileSize);
++    var translations = [[-1, -1], [-1, 1], [1, -1], [1, 1]];
++    for (var i = 0; i < translations.length; i++) {
++        var translation = translations[i];
++        gl.uniformMatrix4fv(program.u_matrix, false, mat4.translate([], posMatrix, [onePixel * translation[0], onePixel * translation[1], 0]));
++        gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
++    }
+ 
+-function PositionedIcon(image, top, bottom, left, right) {
+-    this.image = image;
+-    this.top = top;
+-    this.bottom = bottom;
+-    this.left = left;
+-    this.right = right;
++    gl.uniform4f(program.u_color, 0, 0, 0, 1);
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++    gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
+ }
+ 
+-},{}],86:[function(require,module,exports){
++},{"../data/bucket":67,"../data/buffer":72,"../lib/debugtext":79,"../util/browser":155,"./vertex_array_object":93,"gl-matrix":24}],85:[function(require,module,exports){
+ 'use strict';
+ 
+-var ShelfPack = require('shelf-pack');
+-var browser = require('../util/browser');
+-
+-module.exports = SpriteAtlas;
+-function SpriteAtlas(width, height) {
+-    this.width = width;
+-    this.height = height;
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-    this.bin = new ShelfPack(width, height);
+-    this.images = {};
+-    this.data = false;
+-    this.texture = 0; // WebGL ID
+-    this.filter = 0; // WebGL ID
+-    this.pixelRatio = 1;
+-    this.dirty = true;
+-}
++module.exports = draw;
+ 
+-function copyBitmap(src, srcStride, srcX, srcY, dst, dstStride, dstX, dstY, width, height, wrap) {
+-    var srcI = srcY * srcStride + srcX;
+-    var dstI = dstY * dstStride + dstX;
+-    var x, y;
++function draw(painter, source, layer, coords) {
++    var gl = painter.gl;
++    gl.enable(gl.STENCIL_TEST);
+ 
+-    if (wrap) {
+-        // add 1 pixel wrapped padding on each side of the image
+-        dstI -= dstStride;
+-        for (y = -1; y <= height; y++, srcI = ((y + height) % height + srcY) * srcStride + srcX, dstI += dstStride) {
+-            for (x = -1; x <= width; x++) {
+-                dst[dstI + x] = src[srcI + ((x + width) % width)];
+-            }
+-        }
++    var color = util.premultiply(layer.paint['fill-color']);
++    var image = layer.paint['fill-pattern'];
++    var strokeColor = util.premultiply(layer.paint['fill-outline-color']);
++    var opacity = layer.paint['fill-opacity'];
+ 
+-    } else {
+-        for (y = 0; y < height; y++, srcI += srcStride, dstI += dstStride) {
+-            for (x = 0; x < width; x++) {
+-                dst[dstI + x] = src[srcI + x];
+-            }
++    // Draw fill
++    if (image ? !painter.isOpaquePass : painter.isOpaquePass === (color[3] === 1 && opacity === 1)) {
++        // Once we switch to earcut drawing we can pull most of the WebGL setup
++        // outside of this coords loop.
++        for (var i = 0; i < coords.length; i++) {
++            drawFill(painter, source, layer, coords[i]);
+         }
+     }
+-}
+-
+-SpriteAtlas.prototype.allocateImage = function(pixelWidth, pixelHeight) {
+ 
+-    pixelWidth = pixelWidth / this.pixelRatio;
+-    pixelHeight = pixelHeight / this.pixelRatio;
++    // Draw stroke
++    if (!painter.isOpaquePass && layer.paint['fill-antialias']) {
++        if (strokeColor || !layer.paint['fill-pattern']) {
++            var outlineProgram = painter.useProgram('outline');
++            painter.lineWidth(2);
++            painter.depthMask(false);
+ 
+-    // Increase to next number divisible by 4, but at least 1.
+-    // This is so we can scale down the texture coordinates and pack them
+-    // into 2 bytes rather than 4 bytes.
+-    // Pad icons to prevent them from polluting neighbours during linear interpolation
+-    var padding = 2;
+-    var packWidth = pixelWidth + padding + (4 - (pixelWidth + padding) % 4);
+-    var packHeight = pixelHeight + padding + (4 - (pixelHeight + padding) % 4);// + 4;
++            if (strokeColor) {
++                // If we defined a different color for the fill outline, we are
++                // going to ignore the bits in 0x07 and just care about the global
++                // clipping mask.
++                painter.setDepthSublayer(2);
++            } else {
++                // Otherwise, we only want to drawFill the antialiased parts that are
++                // *outside* the current shape. This is important in case the fill
++                // or stroke color is translucent. If we wouldn't clip to outside
++                // the current shape, some pixels from the outline stroke overlapped
++                // the (non-antialiased) fill.
++                painter.setDepthSublayer(0);
++            }
++            gl.uniform2f(outlineProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
++            gl.uniform4fv(outlineProgram.u_color, strokeColor ? strokeColor : color);
++            gl.uniform1f(outlineProgram.u_opacity, opacity);
+ 
+-    var rect = this.bin.packOne(packWidth, packHeight);
+-    if (!rect) {
+-        console.warn('SpriteAtlas out of space.');
+-        return null;
+-    }
++            for (var j = 0; j < coords.length; j++) {
++                drawStroke(painter, source, layer, coords[j]);
++            }
++        } else {
++            var outlinePatternProgram = painter.useProgram('outlinepattern');
++            painter.lineWidth(2);
++            painter.depthMask(false);
++            // Otherwise, we only want to drawFill the antialiased parts that are
++            // *outside* the current shape. This is important in case the fill
++            // or stroke color is translucent. If we wouldn't clip to outside
++            // the current shape, some pixels from the outline stroke overlapped
++            // the (non-antialiased) fill.
++            painter.setDepthSublayer(0);
++            gl.uniform2f(outlinePatternProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
+ 
+-    return rect;
+-};
++            for (var k = 0; k < coords.length; k++) {
++                drawStroke(painter, source, layer, coords[k]);
++            }
++        }
+ 
+-SpriteAtlas.prototype.getImage = function(name, wrap) {
+-    if (this.images[name]) {
+-        return this.images[name];
+     }
++}
+ 
+-    if (!this.sprite) {
+-        return null;
+-    }
++function drawFill(painter, source, layer, coord) {
++    var tile = source.getTile(coord);
++    var bucket = tile.getBucket(layer);
++    if (!bucket) return;
++    var bufferGroups = bucket.bufferGroups.fill;
++    if (!bufferGroups) return;
+ 
+-    var pos = this.sprite.getSpritePosition(name);
+-    if (!pos.width || !pos.height) {
+-        return null;
+-    }
++    var gl = painter.gl;
+ 
+-    var rect = this.allocateImage(pos.width, pos.height);
+-    if (!rect) {
+-        return null;
+-    }
++    var color = util.premultiply(layer.paint['fill-color']);
++    var image = layer.paint['fill-pattern'];
++    var opacity = layer.paint['fill-opacity'];
+ 
+-    var image = new AtlasImage(rect, pos.width / pos.pixelRatio, pos.height / pos.pixelRatio, pos.sdf, pos.pixelRatio / this.pixelRatio);
+-    this.images[name] = image;
++    var posMatrix = coord.posMatrix;
++    var translatedPosMatrix = painter.translatePosMatrix(posMatrix, tile, layer.paint['fill-translate'], layer.paint['fill-translate-anchor']);
+ 
+-    this.copy(rect, pos, wrap);
++    // Draw the stencil mask.
++    painter.setDepthSublayer(1);
+ 
+-    return image;
+-};
++    // We're only drawFilling to the first seven bits (== support a maximum of
++    // 8 overlapping polygons in one place before we get rendering errors).
++    gl.stencilMask(0x07);
++    gl.clear(gl.STENCIL_BUFFER_BIT);
+ 
++    // Draw front facing triangles. Wherever the 0x80 bit is 1, we are
++    // increasing the lower 7 bits by one if the triangle is a front-facing
++    // triangle. This means that all visible polygons should be in CCW
++    // orientation, while all holes (see below) are in CW orientation.
++    painter.enableTileClippingMask(coord);
+ 
+-// Return position of a repeating fill pattern.
+-SpriteAtlas.prototype.getPosition = function(name, repeating) {
+-    var image = this.getImage(name, repeating);
+-    var rect = image && image.rect;
++    // When we do a nonzero fill, we count the number of times a pixel is
++    // covered by a counterclockwise polygon, and subtract the number of
++    // times it is "uncovered" by a clockwise polygon.
++    gl.stencilOpSeparate(gl.FRONT, gl.KEEP, gl.KEEP, gl.INCR_WRAP);
++    gl.stencilOpSeparate(gl.BACK, gl.KEEP, gl.KEEP, gl.DECR_WRAP);
+ 
+-    if (!rect) {
+-        return null;
+-    }
++    // When drawFilling a shape, we first drawFill all shapes to the stencil buffer
++    // and incrementing all areas where polygons are
++    gl.colorMask(false, false, false, false);
++    painter.depthMask(false);
+ 
+-    var width = image.width * image.pixelRatio;
+-    var height = image.height * image.pixelRatio;
+-    var padding = 1;
++    // Draw the actual triangle fan into the stencil buffer.
++    var fillProgram = painter.useProgram('fill');
++    gl.uniformMatrix4fv(fillProgram.u_matrix, false, translatedPosMatrix);
+ 
+-    return {
+-        size: [image.width, image.height],
+-        tl: [(rect.x + padding)         / this.width, (rect.y + padding)          / this.height],
+-        br: [(rect.x + padding + width) / this.width, (rect.y + padding + height) / this.height]
+-    };
+-};
++    for (var i = 0; i < bufferGroups.length; i++) {
++        var group = bufferGroups[i];
++        group.vaos[layer.id].bind(gl, fillProgram, group.layout.vertex, group.layout.element);
++        gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++    }
+ 
++    // Now that we have the stencil mask in the stencil buffer, we can start
++    // writing to the color buffer.
++    gl.colorMask(true, true, true, true);
++    painter.depthMask(true);
+ 
+-SpriteAtlas.prototype.allocate = function() {
+-    if (!this.data) {
+-        var w = Math.floor(this.width * this.pixelRatio);
+-        var h = Math.floor(this.height * this.pixelRatio);
+-        this.data = new Uint32Array(w * h);
+-        for (var i = 0; i < this.data.length; i++) {
+-            this.data[i] = 0;
+-        }
+-    }
+-};
++    // From now on, we don't want to update the stencil buffer anymore.
++    gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
++    gl.stencilMask(0x0);
++    var program;
+ 
++    if (image) {
++        // Draw texture fill
++        program = painter.useProgram('pattern');
++        setPattern(image, opacity, tile, coord, painter, program);
+ 
+-SpriteAtlas.prototype.copy = function(dst, src, wrap) {
+-    if (!this.sprite.img.data) return;
+-    var srcImg = new Uint32Array(this.sprite.img.data.buffer);
++        gl.activeTexture(gl.TEXTURE0);
++        painter.spriteAtlas.bind(gl, true);
+ 
+-    this.allocate();
+-    var dstImg = this.data;
++        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
+ 
+-    var padding = 1;
++    } else {
++        // Draw filling rectangle.
++        program = painter.useProgram('fill');
++        gl.uniform4fv(fillProgram.u_color, color);
++        gl.uniform1f(fillProgram.u_opacity, opacity);
++        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
++    }
+ 
+-    copyBitmap(
+-        /* source buffer */  srcImg,
+-        /* source stride */  this.sprite.img.width,
+-        /* source x */       src.x,
+-        /* source y */       src.y,
+-        /* dest buffer */    dstImg,
+-        /* dest stride */    this.width * this.pixelRatio,
+-        /* dest x */         (dst.x + padding) * this.pixelRatio,
+-        /* dest y */         (dst.y + padding) * this.pixelRatio,
+-        /* icon dimension */ src.width,
+-        /* icon dimension */ src.height,
+-        /* wrap */ wrap
+-    );
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+ 
+-    this.dirty = true;
+-};
++    // Only draw regions that we marked
++    gl.stencilFunc(gl.NOTEQUAL, 0x0, 0x07);
+ 
+-SpriteAtlas.prototype.setSprite = function(sprite) {
+-    if (sprite) {
+-        this.pixelRatio = browser.devicePixelRatio > 1 ? 2 : 1;
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
+ 
+-        if (this.canvas) {
+-            this.canvas.width = this.width * this.pixelRatio;
+-            this.canvas.height = this.height * this.pixelRatio;
+-        }
+-    }
+-    this.sprite = sprite;
+-};
++    gl.stencilMask(0x00);
++}
+ 
+-SpriteAtlas.prototype.addIcons = function(icons, callback) {
+-    for (var i = 0; i < icons.length; i++) {
+-        this.getImage(icons[i]);
+-    }
++function drawStroke(painter, source, layer, coord) {
++    var tile = source.getTile(coord);
++    var bucket = tile.getBucket(layer);
++    if (!bucket) return;
+ 
+-    callback(null, this.images);
+-};
++    var gl = painter.gl;
++    var bufferGroups = bucket.bufferGroups.fill;
+ 
+-SpriteAtlas.prototype.bind = function(gl, linear) {
+-    var first = false;
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-        first = true;
+-    } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-    }
++    var image = layer.paint['fill-pattern'];
++    var opacity = layer.paint['fill-opacity'];
++    var program = image ? painter.useProgram('outlinepattern') : painter.useProgram('outline');
+ 
+-    var filterVal = linear ? gl.LINEAR : gl.NEAREST;
+-    if (filterVal !== this.filter) {
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, filterVal);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, filterVal);
+-        this.filter = filterVal;
+-    }
++    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
++        coord.posMatrix,
++        tile,
++        layer.paint['fill-translate'],
++        layer.paint['fill-translate-anchor']
++    ));
+ 
+-    if (this.dirty) {
+-        this.allocate();
++    if (image) { setPattern(image, opacity, tile, coord, painter, program); }
+ 
+-        if (first) {
+-            gl.texImage2D(
+-                gl.TEXTURE_2D, // enum target
+-                0, // ind level
+-                gl.RGBA, // ind internalformat
+-                this.width * this.pixelRatio, // GLsizei width
+-                this.height * this.pixelRatio, // GLsizei height
+-                0, // ind border
+-                gl.RGBA, // enum format
+-                gl.UNSIGNED_BYTE, // enum type
+-                new Uint8Array(this.data.buffer) // Object data
+-            );
+-        } else {
+-            gl.texSubImage2D(
+-                gl.TEXTURE_2D, // enum target
+-                0, // int level
+-                0, // int xoffset
+-                0, // int yoffset
+-                this.width * this.pixelRatio, // long width
+-                this.height * this.pixelRatio, // long height
+-                gl.RGBA, // enum format
+-                gl.UNSIGNED_BYTE, // enum type
+-                new Uint8Array(this.data.buffer) // Object pixels
+-            );
+-        }
++    painter.enableTileClippingMask(coord);
+ 
+-        this.dirty = false;
++    for (var k = 0; k < bufferGroups.length; k++) {
++        var group = bufferGroups[k];
++        group.secondVaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element2);
++        gl.drawElements(gl.LINES, group.layout.element2.length * 2, gl.UNSIGNED_SHORT, 0);
+     }
+-};
+-
+-function AtlasImage(rect, width, height, sdf, pixelRatio) {
+-    this.rect = rect;
+-    this.width = width;
+-    this.height = height;
+-    this.sdf = sdf;
+-    this.pixelRatio = pixelRatio;
+ }
+ 
+-},{"../util/browser":105,"shelf-pack":176}],87:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var interpolate = require('../util/interpolate');
+-var browser = require('../util/browser');
+-var LngLat = require('../geo/lng_lat');
+-var LngLatBounds = require('../geo/lng_lat_bounds');
+-var Point = require('point-geometry');
+-
+-/**
+- * Options common to Map#jumpTo, Map#easeTo, and Map#flyTo, controlling the destination
+- * location, zoom level, bearing and pitch. All properties are options; unspecified
+- * options will default to the current value for that property.
+- *
+- * @typedef {Object} CameraOptions
+- * @property {LngLat} center Map center
+- * @property {number} zoom Map zoom level
+- * @property {number} bearing Map rotation bearing in degrees counter-clockwise from north
+- * @property {number} pitch Map angle in degrees at which the camera is looking at the ground
+- * @property {LngLat} around If zooming, the zoom center (defaults to map center)
+- */
+ 
+-/**
+- * Options common to map movement methods that involve animation, such as Map#panBy and
+- * Map#easeTo, controlling the duration of the animation and easing function. All properties
+- * are optional.
+- *
+- * @typedef {Object} AnimationOptions
+- * @property {number} duration Number in milliseconds
+- * @property {Function} easing
+- * @property {Array} offset point, origin of movement relative to map center
+- * @property {boolean} animate When set to false, no animation happens
+- */
++function setPattern(image, opacity, tile, coord, painter, program) {
++    var gl = painter.gl;
+ 
+-var Camera = module.exports = function() {};
++    var imagePosA = painter.spriteAtlas.getPosition(image.from, true);
++    var imagePosB = painter.spriteAtlas.getPosition(image.to, true);
++    if (!imagePosA || !imagePosB) return;
+ 
+-util.extend(Camera.prototype, /** @lends Map.prototype */{
+-    /**
+-     * Get the current view geographical point.
+-     * @returns {LngLat}
+-     */
+-    getCenter: function() { return this.transform.center; },
+ 
+-    /**
+-     * Sets a map location. Equivalent to `jumpTo({center: center})`.
+-     *
+-     * @param {LngLat} center Map center to jump to
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setCenter([-74, 38]);
+-     */
+-    setCenter: function(center, eventData) {
+-        this.jumpTo({center: center}, eventData);
+-        return this;
+-    },
++    gl.uniform1i(program.u_image, 0);
++    gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
++    gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
++    gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
++    gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
++    gl.uniform1f(program.u_opacity, opacity);
++    gl.uniform1f(program.u_mix, image.t);
+ 
+-    /**
+-     * Pan by a certain number of pixels
+-     *
+-     * @param {Array<number>} offset [x, y]
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    panBy: function(offset, options, eventData) {
+-        this.panTo(this.transform.center,
+-            util.extend({offset: Point.convert(offset).mult(-1)}, options), eventData);
+-        return this;
+-    },
++    var imageSizeScaledA = [
++        (imagePosA.size[0] * image.fromScale),
++        (imagePosA.size[1] * image.fromScale)
++    ];
++    var imageSizeScaledB = [
++        (imagePosB.size[0] * image.toScale),
++        (imagePosB.size[1] * image.toScale)
++    ];
+ 
+-    /**
+-     * Pan to a certain location with easing
+-     *
+-     * @param {LngLat} lnglat Location to pan to
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    panTo: function(lnglat, options, eventData) {
+-        return this.easeTo(util.extend({
+-            center: lnglat
+-        }, options), eventData);
+-    },
++    gl.uniform2fv(program.u_patternscale_a, [
++        1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
++        1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
++    ]);
+ 
++    gl.uniform2fv(program.u_patternscale_b, [
++        1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
++        1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
++    ]);
+ 
+-    /**
+-     * Get the current zoom
+-     * @returns {number}
+-     */
+-    getZoom: function() { return this.transform.zoom; },
++    var tileSizeAtNearestZoom = tile.tileSize * Math.pow(2, painter.transform.tileZoom - tile.coord.z);
+ 
+-    /**
+-     * Sets a map zoom. Equivalent to `jumpTo({zoom: zoom})`.
+-     *
+-     * @param {number} zoom Map zoom level
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     * @example
+-     * // zoom the map to 5
+-     * map.setZoom(5);
+-     */
+-    setZoom: function(zoom, eventData) {
+-        this.jumpTo({zoom: zoom}, eventData);
+-        return this;
+-    },
++    // shift images to match at tile boundaries
++    var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
++    var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * tile.coord.y;
+ 
+-    /**
+-     * Zooms to a certain zoom level with easing.
+-     *
+-     * @param {number} zoom
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     */
+-    zoomTo: function(zoom, options, eventData) {
+-        return this.easeTo(util.extend({
+-            zoom: zoom
+-        }, options), eventData);
+-    },
++    var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
++    var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * tile.coord.y;
+ 
+-    /**
+-     * Zoom in by 1 level
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     */
+-    zoomIn: function(options, eventData) {
+-        this.zoomTo(this.getZoom() + 1, options, eventData);
+-        return this;
+-    },
++    gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
++    gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
+ 
+-    /**
+-     * Zoom out by 1 level
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     */
+-    zoomOut: function(options, eventData) {
+-        this.zoomTo(this.getZoom() - 1, options, eventData);
+-        return this;
+-    },
++    gl.activeTexture(gl.TEXTURE0);
++    painter.spriteAtlas.bind(gl, true);
++}
+ 
++},{"../source/pixels_to_tile_units":97,"../util/util":169}],86:[function(require,module,exports){
++'use strict';
+ 
+-    /**
+-     * Get the current bearing in degrees
+-     * @returns {number}
+-     */
+-    getBearing: function() { return this.transform.bearing; },
++var browser = require('../util/browser');
++var mat2 = require('gl-matrix').mat2;
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-    /**
+-     * Sets a map rotation. Equivalent to `jumpTo({bearing: bearing})`.
+-     *
+-     * @param {number} bearing Map rotation bearing in degrees counter-clockwise from north
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     * @example
+-     * // rotate the map to 90 degrees
+-     * map.setBearing(90);
+-     */
+-    setBearing: function(bearing, eventData) {
+-        this.jumpTo({bearing: bearing}, eventData);
+-        return this;
+-    },
++/**
++ * Draw a line. Under the hood this will read elements from
++ * a tile, dash textures from a lineAtlas, and style properties from a layer.
++ * @param {Object} painter
++ * @param {Object} layer
++ * @param {Object} posMatrix
++ * @param {Tile} tile
++ * @returns {undefined} draws with the painter
++ * @private
++ */
++module.exports = function drawLine(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
++    painter.setDepthSublayer(0);
++    painter.depthMask(false);
+ 
+-    /**
+-     * Rotate bearing by a certain number of degrees with easing
+-     *
+-     * @param {number} bearing
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    rotateTo: function(bearing, options, eventData) {
+-        return this.easeTo(util.extend({
+-            bearing: bearing
+-        }, options), eventData);
+-    },
++    var gl = painter.gl;
++    gl.enable(gl.STENCIL_TEST);
+ 
+-    /**
+-     * Sets map bearing to 0 (north) with easing
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    resetNorth: function(options, eventData) {
+-        this.rotateTo(0, util.extend({duration: 1000}, options), eventData);
+-        return this;
+-    },
++    // don't draw zero-width lines
++    if (layer.paint['line-width'] <= 0) return;
+ 
+-    /**
+-     * Animates map bearing to 0 (north) if it's already close to it.
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    snapToNorth: function(options, eventData) {
+-        if (Math.abs(this.getBearing()) < this.options.bearingSnap) {
+-            return this.resetNorth(options, eventData);
+-        }
+-        return this;
+-    },
++    // the distance over which the line edge fades out.
++    // Retina devices need a smaller distance to avoid aliasing.
++    var antialiasing = 1 / browser.devicePixelRatio;
+ 
+-    /**
+-     * Get the current angle in degrees
+-     * @returns {number}
+-     */
+-    getPitch: function() { return this.transform.pitch; },
++    var blur = layer.paint['line-blur'] + antialiasing;
++    var edgeWidth = layer.paint['line-width'] / 2;
++    var inset = -1;
++    var offset = 0;
++    var shift = 0;
+ 
+-    /**
+-     * Sets a map angle. Equivalent to `jumpTo({pitch: pitch})`.
+-     *
+-     * @param {number} pitch The angle at which the camera is looking at the ground
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    setPitch: function(pitch, eventData) {
+-        this.jumpTo({pitch: pitch}, eventData);
+-        return this;
+-    },
++    if (layer.paint['line-gap-width'] > 0) {
++        inset = layer.paint['line-gap-width'] / 2 + antialiasing * 0.5;
++        edgeWidth = layer.paint['line-width'];
+ 
++        // shift outer lines half a pixel towards the middle to eliminate the crack
++        offset = inset - antialiasing / 2;
++    }
+ 
+-    /**
+-     * Zoom to contain certain geographical bounds
+-     *
+-     * @param {LngLatBounds|Array<Array<number>>} bounds [[minLng, minLat], [maxLng, maxLat]]
+-     * @param {Object} options
+-     * @param {boolean} [options.linear] When true, the map transitions to the new camera using
+-     *     {@link #Map.easeTo}. When false, the map transitions using {@link #Map.flyTo}. See
+-     *     {@link #Map.flyTo} for information on options specific to that animation transition.
+-     * @param {Function} options.easing
+-     * @param {number} options.padding how much padding there is around the given bounds on each side in pixels
+-     * @param {number} options.maxZoom The resulting zoom level will be at most
+-     *     this value.
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    fitBounds: function(bounds, options, eventData) {
++    var outset = offset + edgeWidth + antialiasing / 2 + shift;
++    var color = util.premultiply(layer.paint['line-color']);
+ 
+-        options = util.extend({
+-            padding: 0,
+-            offset: [0, 0],
+-            maxZoom: Infinity
+-        }, options);
++    var tr = painter.transform;
+ 
+-        bounds = LngLatBounds.convert(bounds);
++    var antialiasingMatrix = mat2.create();
++    mat2.scale(antialiasingMatrix, antialiasingMatrix, [1, Math.cos(tr._pitch)]);
++    mat2.rotate(antialiasingMatrix, antialiasingMatrix, painter.transform.angle);
+ 
+-        var offset = Point.convert(options.offset),
+-            tr = this.transform,
+-            nw = tr.project(bounds.getNorthWest()),
+-            se = tr.project(bounds.getSouthEast()),
+-            size = se.sub(nw),
+-            scaleX = (tr.width - options.padding * 2 - Math.abs(offset.x) * 2) / size.x,
+-            scaleY = (tr.height - options.padding * 2 - Math.abs(offset.y) * 2) / size.y;
++    // calculate how much longer the real world distance is at the top of the screen
++    // than at the middle of the screen.
++    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
++    var x = tr.height / 2 * Math.tan(tr._pitch);
++    var extra = (topedgelength + x) / topedgelength - 1;
+ 
+-        options.center = tr.unproject(nw.add(se).div(2));
+-        options.zoom = Math.min(tr.scaleZoom(tr.scale * Math.min(scaleX, scaleY)), options.maxZoom);
+-        options.bearing = 0;
++    var dasharray = layer.paint['line-dasharray'];
++    var image = layer.paint['line-pattern'];
++    var program, posA, posB, imagePosA, imagePosB;
+ 
+-        return options.linear ?
+-            this.easeTo(options, eventData) :
+-            this.flyTo(options, eventData);
+-    },
++    if (dasharray) {
++        program = painter.useProgram('linesdfpattern');
+ 
+-    /**
+-     * Change any combination of center, zoom, bearing, and pitch, without
+-     * a transition. The map will retain the current values for any options
+-     * not included in `options`.
+-     *
+-     * @param {CameraOptions} options map view options
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires rotate
+-     * @fires pitch
+-     * @fires zoomend
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    jumpTo: function(options, eventData) {
+-        this.stop();
++        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
++        gl.uniform1f(program.u_blur, blur);
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
+ 
+-        var tr = this.transform,
+-            zoomChanged = false,
+-            bearingChanged = false,
+-            pitchChanged = false;
++        posA = painter.lineAtlas.getDash(dasharray.from, layer.layout['line-cap'] === 'round');
++        posB = painter.lineAtlas.getDash(dasharray.to, layer.layout['line-cap'] === 'round');
+ 
+-        if ('zoom' in options && tr.zoom !== +options.zoom) {
+-            zoomChanged = true;
+-            tr.zoom = +options.zoom;
+-        }
++        gl.uniform1i(program.u_image, 0);
++        gl.activeTexture(gl.TEXTURE0);
++        painter.lineAtlas.bind(gl);
+ 
+-        if ('center' in options) {
+-            tr.center = LngLat.convert(options.center);
+-        }
++        gl.uniform1f(program.u_tex_y_a, posA.y);
++        gl.uniform1f(program.u_tex_y_b, posB.y);
++        gl.uniform1f(program.u_mix, dasharray.t);
++        gl.uniform1f(program.u_extra, extra);
++        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
++        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
+ 
+-        if ('bearing' in options && tr.bearing !== +options.bearing) {
+-            bearingChanged = true;
+-            tr.bearing = +options.bearing;
+-        }
++    } else if (image) {
++        imagePosA = painter.spriteAtlas.getPosition(image.from, true);
++        imagePosB = painter.spriteAtlas.getPosition(image.to, true);
++        if (!imagePosA || !imagePosB) return;
+ 
+-        if ('pitch' in options && tr.pitch !== +options.pitch) {
+-            pitchChanged = true;
+-            tr.pitch = +options.pitch;
+-        }
++        program = painter.useProgram('linepattern');
+ 
+-        this.fire('movestart', eventData)
+-            .fire('move', eventData);
++        gl.uniform1i(program.u_image, 0);
++        gl.activeTexture(gl.TEXTURE0);
++        painter.spriteAtlas.bind(gl, true);
+ 
+-        if (zoomChanged) {
+-            this.fire('zoomstart', eventData)
+-                .fire('zoom', eventData)
+-                .fire('zoomend', eventData);
+-        }
++        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
++        gl.uniform1f(program.u_blur, blur);
++        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
++        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
++        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
++        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
++        gl.uniform1f(program.u_fade, image.t);
++        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
++        gl.uniform1f(program.u_extra, extra);
++        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
++        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
+ 
+-        if (bearingChanged) {
+-            this.fire('rotate', eventData);
+-        }
++    } else {
++        program = painter.useProgram('line');
+ 
+-        if (pitchChanged) {
+-            this.fire('pitch', eventData);
+-        }
++        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
++        gl.uniform1f(program.u_blur, blur);
++        gl.uniform1f(program.u_extra, extra);
++        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
++        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
++    }
+ 
+-        return this.fire('moveend', eventData);
+-    },
++    for (var k = 0; k < coords.length; k++) {
++        var coord = coords[k];
++        var tile = source.getTile(coord);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bufferGroups = bucket.bufferGroups.line;
++        if (!bufferGroups) continue;
+ 
+-    /**
+-     * Change any combination of center, zoom, bearing, and pitch, with a smooth animation
+-     * between old and new values. The map will retain the current values for any options
+-     * not included in `options`.
+-     *
+-     * @param {CameraOptions|AnimationOptions} options map view and animation options
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires rotate
+-     * @fires pitch
+-     * @fires zoomend
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    easeTo: function(options, eventData) {
+-        this.stop();
++        painter.enableTileClippingMask(coord);
+ 
+-        options = util.extend({
+-            offset: [0, 0],
+-            duration: 500,
+-            easing: util.ease
+-        }, options);
++        // set uniforms that are different for each tile
++        var posMatrix = painter.translatePosMatrix(coord.posMatrix, tile, layer.paint['line-translate'], layer.paint['line-translate-anchor']);
++        gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+ 
+-        var tr = this.transform,
+-            offset = Point.convert(options.offset),
+-            startZoom = this.getZoom(),
+-            startBearing = this.getBearing(),
+-            startPitch = this.getPitch(),
++        var ratio = 1 / pixelsToTileUnits(tile, 1, painter.transform.zoom);
+ 
+-            zoom = 'zoom' in options ? +options.zoom : startZoom,
+-            bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing,
+-            pitch = 'pitch' in options ? +options.pitch : startPitch,
++        if (dasharray) {
++            var widthA = posA.width * dasharray.fromScale;
++            var widthB = posB.width * dasharray.toScale;
++            var scaleA = [1 / pixelsToTileUnits(tile, widthA, painter.transform.tileZoom), -posA.height / 2];
++            var scaleB = [1 / pixelsToTileUnits(tile, widthB, painter.transform.tileZoom), -posB.height / 2];
++            var gamma = painter.lineAtlas.width / (Math.min(widthA, widthB) * 256 * browser.devicePixelRatio) / 2;
++            gl.uniform1f(program.u_ratio, ratio);
++            gl.uniform2fv(program.u_patternscale_a, scaleA);
++            gl.uniform2fv(program.u_patternscale_b, scaleB);
++            gl.uniform1f(program.u_sdfgamma, gamma);
+ 
+-            toLngLat,
+-            toPoint;
++        } else if (image) {
++            gl.uniform1f(program.u_ratio, ratio);
++            gl.uniform2fv(program.u_pattern_size_a, [
++                pixelsToTileUnits(tile, imagePosA.size[0] * image.fromScale, painter.transform.tileZoom),
++                imagePosB.size[1]
++            ]);
++            gl.uniform2fv(program.u_pattern_size_b, [
++                pixelsToTileUnits(tile, imagePosB.size[0] * image.toScale, painter.transform.tileZoom),
++                imagePosB.size[1]
++            ]);
+ 
+-        if ('center' in options) {
+-            toLngLat = LngLat.convert(options.center);
+-            toPoint = tr.centerPoint.add(offset);
+-        } else if ('around' in options) {
+-            toLngLat = LngLat.convert(options.around);
+-            toPoint = tr.locationPoint(toLngLat);
+         } else {
+-            toPoint = tr.centerPoint.add(offset);
+-            toLngLat = tr.pointLocation(toPoint);
++            gl.uniform1f(program.u_ratio, ratio);
+         }
+ 
+-        var fromPoint = tr.locationPoint(toLngLat);
++        for (var i = 0; i < bufferGroups.length; i++) {
++            var group = bufferGroups[i];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++        }
++    }
+ 
+-        if (options.animate === false) options.duration = 0;
++};
+ 
+-        this.zooming = (zoom !== startZoom);
+-        this.rotating = (startBearing !== bearing);
+-        this.pitching = (pitch !== startPitch);
++},{"../source/pixels_to_tile_units":97,"../util/browser":155,"../util/util":169,"gl-matrix":24}],87:[function(require,module,exports){
++'use strict';
+ 
+-        if (!options.noMoveStart) {
+-            this.fire('movestart', eventData);
+-        }
+-        if (this.zooming) {
+-            this.fire('zoomstart', eventData);
+-        }
++var util = require('../util/util');
++var StructArrayType = require('../util/struct_array');
+ 
+-        clearTimeout(this._onEaseEnd);
++module.exports = drawRaster;
+ 
+-        this._ease(function (k) {
+-            if (this.zooming) {
+-                tr.zoom = interpolate(startZoom, zoom, k);
+-            }
++function drawRaster(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
+ 
+-            if (this.rotating) {
+-                tr.bearing = interpolate(startBearing, bearing, k);
+-            }
++    var gl = painter.gl;
+ 
+-            if (this.pitching) {
+-                tr.pitch = interpolate(startPitch, pitch, k);
+-            }
++    gl.enable(gl.DEPTH_TEST);
++    painter.depthMask(true);
+ 
+-            tr.setLocationAtPoint(toLngLat, fromPoint.add(toPoint.sub(fromPoint)._mult(k)));
++    // Change depth function to prevent double drawing in areas where tiles overlap.
++    gl.depthFunc(gl.LESS);
+ 
+-            this.fire('move', eventData);
+-            if (this.zooming) {
+-                this.fire('zoom', eventData);
+-            }
+-            if (this.rotating) {
+-                this.fire('rotate', eventData);
+-            }
+-            if (this.pitching) {
+-                this.fire('pitch', eventData);
+-            }
+-        }, function() {
+-            if (options.delayEndEvents) {
+-                this._onEaseEnd = setTimeout(this._easeToEnd.bind(this, eventData), options.delayEndEvents);
+-            } else {
+-                this._easeToEnd(eventData);
+-            }
+-        }.bind(this), options);
++    var minTileZ = coords.length && coords[0].z;
+ 
+-        return this;
+-    },
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
++        // set the lower zoom level to sublayer 0, and higher zoom levels to higher sublayers
++        painter.setDepthSublayer(coord.z - minTileZ);
++        drawRasterTile(painter, source, layer, coord);
++    }
+ 
+-    _easeToEnd: function(eventData) {
+-        if (this.zooming) {
+-            this.fire('zoomend', eventData);
+-        }
+-        this.fire('moveend', eventData);
++    gl.depthFunc(gl.LEQUAL);
++}
+ 
+-        this.zooming = false;
+-        this.rotating = false;
+-        this.pitching = false;
+-    },
++drawRaster.RasterBoundsArray = new StructArrayType({
++    members: [
++        { name: 'a_pos', type: 'Int16', components: 2 },
++        { name: 'a_texture_pos', type: 'Int16', components: 2 }
++    ]
++});
+ 
+-    /**
+-     * Change any combination of center, zoom, bearing, and pitch, animated along a curve that
+-     * evokes flight. The transition animation seamlessly incorporates zooming and panning to help
+-     * the user find his or her bearings even after traversing a great distance.
+-     *
+-     * @param {CameraOptions|AnimationOptions} options map view and animation options
+-     * @param {number} [options.curve=1.42] Relative amount of zooming that takes place along the
+-     *     flight path. A high value maximizes zooming for an exaggerated animation, while a low
+-     *     value minimizes zooming for something closer to {@link #Map.easeTo}. 1.42 is the average
+-     *     value selected by participants in the user study in
+-     *     [van Wijk (2003)](https://www.win.tue.nl/~vanwijk/zoompan.pdf). A value of
+-     *     `Math.pow(6, 0.25)` would be equivalent to the root mean squared average velocity. A
+-     *     value of 1 would produce a circular motion.
+-     * @param {number} [options.minZoom] Zero-based zoom level at the peak of the flight path. If
+-     *     `options.curve` is specified, this option is ignored.
+-     * @param {number} [options.speed=1.2] Average speed of the animation. A speed of 1.2 means that
+-     *     the map appears to move along the flight path by 1.2 times `options.curve` screenfuls every
+-     *     second. A _screenful_ is the visible span in pixels. It does not correspond to a fixed
+-     *     physical distance but rather varies by zoom level.
+-     * @param {number} [options.screenSpeed] Average speed of the animation, measured in screenfuls
+-     *     per second, assuming a linear timing curve. If `options.speed` is specified, this option
+-     *     is ignored.
+-     * @param {Function} [options.easing] Transition timing curve
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires rotate
+-     * @fires pitch
+-     * @fires zoomend
+-     * @fires moveend
+-     * @returns {this}
+-     * @example
+-     * // fly with default options to null island
+-     * map.flyTo({center: [0, 0], zoom: 9});
+-     * // using flyTo options
+-     * map.flyTo({
+-     *   center: [0, 0],
+-     *   zoom: 9,
+-     *   speed: 0.2,
+-     *   curve: 1,
+-     *   easing: function(t) {
+-     *     return t;
+-     *   }
+-     * });
+-     */
+-    flyTo: function(options, eventData) {
+-        // This method implements an “optimal path” animation, as detailed in:
+-        //
+-        // Van Wijk, Jarke J.; Nuij, Wim A. A. “Smooth and efficient zooming and panning.” INFOVIS
+-        //   ’03. pp. 15–22. <https://www.win.tue.nl/~vanwijk/zoompan.pdf#page=5>.
+-        //
+-        // Where applicable, local variable documentation begins with the associated variable or
+-        // function in van Wijk (2003).
++function drawRasterTile(painter, source, layer, coord) {
+ 
+-        this.stop();
++    var gl = painter.gl;
+ 
+-        options = util.extend({
+-            offset: [0, 0],
+-            speed: 1.2,
+-            curve: 1.42,
+-            easing: util.ease
+-        }, options);
++    gl.disable(gl.STENCIL_TEST);
+ 
+-        var tr = this.transform,
+-            offset = Point.convert(options.offset),
+-            startZoom = this.getZoom(),
+-            startBearing = this.getBearing(),
+-            startPitch = this.getPitch();
++    var tile = source.getTile(coord);
++    var posMatrix = painter.transform.calculatePosMatrix(coord, source.maxzoom);
+ 
+-        var center = 'center' in options ? LngLat.convert(options.center) : this.getCenter();
+-        var zoom = 'zoom' in options ?  +options.zoom : startZoom;
+-        var bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing;
+-        var pitch = 'pitch' in options ? +options.pitch : startPitch;
++    var program = painter.useProgram('raster');
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+ 
+-        // If a path crossing the antimeridian would be shorter, extend the final coordinate so that
+-        // interpolating between the two endpoints will cross it.
+-        if (Math.abs(tr.center.lng) + Math.abs(center.lng) > 180) {
+-            if (tr.center.lng > 0 && center.lng < 0) {
+-                center.lng += 360;
+-            } else if (tr.center.lng < 0 && center.lng > 0) {
+-                center.lng -= 360;
+-            }
+-        }
++    // color parameters
++    gl.uniform1f(program.u_brightness_low, layer.paint['raster-brightness-min']);
++    gl.uniform1f(program.u_brightness_high, layer.paint['raster-brightness-max']);
++    gl.uniform1f(program.u_saturation_factor, saturationFactor(layer.paint['raster-saturation']));
++    gl.uniform1f(program.u_contrast_factor, contrastFactor(layer.paint['raster-contrast']));
++    gl.uniform3fv(program.u_spin_weights, spinWeights(layer.paint['raster-hue-rotate']));
+ 
+-        var scale = tr.zoomScale(zoom - startZoom),
+-            from = tr.point,
+-            to = 'center' in options ? tr.project(center).sub(offset.div(scale)) : from;
++    var parentTile = tile.source && tile.source._pyramid.findLoadedParent(coord, 0, {}),
++        opacities = getOpacities(tile, parentTile, layer, painter.transform);
+ 
+-        var startWorldSize = tr.worldSize,
+-            rho = options.curve,
++    var parentScaleBy, parentTL;
+ 
+-            // w₀: Initial visible span, measured in pixels at the initial scale.
+-            w0 = Math.max(tr.width, tr.height),
+-            // w₁: Final visible span, measured in pixels with respect to the initial scale.
+-            w1 = w0 / scale,
+-            // Length of the flight path as projected onto the ground plane, measured in pixels from
+-            // the world image origin at the initial scale.
+-            u1 = to.sub(from).mag();
++    gl.activeTexture(gl.TEXTURE0);
++    gl.bindTexture(gl.TEXTURE_2D, tile.texture);
+ 
+-        if ('minZoom' in options) {
+-            var minZoom = util.clamp(Math.min(options.minZoom, startZoom, zoom), tr.minZoom, tr.maxZoom);
+-            // w<sub>m</sub>: Maximum visible span, measured in pixels with respect to the initial
+-            // scale.
+-            var wMax = w0 / tr.zoomScale(minZoom - startZoom);
+-            rho = Math.sqrt(wMax / u1 * 2);
+-        }
++    if (parentTile) {
++        gl.activeTexture(gl.TEXTURE1);
++        gl.bindTexture(gl.TEXTURE_2D, parentTile.texture);
+ 
+-        // ρ²
+-        var rho2 = rho * rho;
++        parentScaleBy = Math.pow(2, parentTile.coord.z - tile.coord.z);
++        parentTL = [tile.coord.x * parentScaleBy % 1, tile.coord.y * parentScaleBy % 1];
++    } else {
++        opacities[1] = 0;
++    }
+ 
+-        /**
+-         * rᵢ: Returns the zoom-out factor at one end of the animation.
+-         *
+-         * @param i 0 for the ascent or 1 for the descent.
+-         * @private
+-         */
+-        function r(i) {
+-            var b = (w1 * w1 - w0 * w0 + (i ? -1 : 1) * rho2 * rho2 * u1 * u1) / (2 * (i ? w1 : w0) * rho2 * u1);
+-            return Math.log(Math.sqrt(b * b + 1) - b);
+-        }
++    // cross-fade parameters
++    gl.uniform2fv(program.u_tl_parent, parentTL || [0, 0]);
++    gl.uniform1f(program.u_scale_parent, parentScaleBy || 1);
++    gl.uniform1f(program.u_buffer_scale, 1);
++    gl.uniform1f(program.u_opacity0, opacities[0]);
++    gl.uniform1f(program.u_opacity1, opacities[1]);
++    gl.uniform1i(program.u_image0, 0);
++    gl.uniform1i(program.u_image1, 1);
++
++    var buffer = tile.boundsBuffer || painter.rasterBoundsBuffer;
++    var vao = tile.boundsVAO || painter.rasterBoundsVAO;
++    vao.bind(gl, program, buffer);
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, buffer.length);
++}
++
++function spinWeights(angle) {
++    angle *= Math.PI / 180;
++    var s = Math.sin(angle);
++    var c = Math.cos(angle);
++    return [
++        (2 * c + 1) / 3,
++        (-Math.sqrt(3) * s - c + 1) / 3,
++        (Math.sqrt(3) * s - c + 1) / 3
++    ];
++}
+ 
+-        function sinh(n) { return (Math.exp(n) - Math.exp(-n)) / 2; }
+-        function cosh(n) { return (Math.exp(n) + Math.exp(-n)) / 2; }
+-        function tanh(n) { return sinh(n) / cosh(n); }
++function contrastFactor(contrast) {
++    return contrast > 0 ?
++        1 / (1 - contrast) :
++        1 + contrast;
++}
+ 
+-        // r₀: Zoom-out factor during ascent.
+-        var r0 = r(0),
+-            /**
+-             * w(s): Returns the visible span on the ground, measured in pixels with respect to the
+-             * initial scale.
+-             *
+-             * Assumes an angular field of view of 2 arctan ½ ≈ 53°.
+-             * @private
+-             */
+-            w = function (s) { return (cosh(r0) / cosh(r0 + rho * s)); },
+-            /**
+-             * u(s): Returns the distance along the flight path as projected onto the ground plane,
+-             * measured in pixels from the world image origin at the initial scale.
+-             * @private
+-             */
+-            u = function (s) { return w0 * ((cosh(r0) * tanh(r0 + rho * s) - sinh(r0)) / rho2) / u1; },
+-            // S: Total length of the flight path, measured in ρ-screenfuls.
+-            S = (r(1) - r0) / rho;
++function saturationFactor(saturation) {
++    return saturation > 0 ?
++        1 - 1 / (1.001 - saturation) :
++        -saturation;
++}
+ 
+-        // When u₀ = u₁, the optimal path doesn’t require both ascent and descent.
+-        if (Math.abs(u1) < 0.000001) {
+-            // Perform a more or less instantaneous transition if the path is too short.
+-            if (Math.abs(w0 - w1) < 0.000001) return this.easeTo(options);
++function getOpacities(tile, parentTile, layer, transform) {
++    var opacity = [1, 0];
++    var fadeDuration = layer.paint['raster-fade-duration'];
+ 
+-            var k = w1 < w0 ? -1 : 1;
+-            S = Math.abs(Math.log(w1 / w0)) / rho;
++    if (tile.source && fadeDuration > 0) {
++        var now = new Date().getTime();
+ 
+-            u = function() { return 0; };
+-            w = function(s) { return Math.exp(k * rho * s); };
+-        }
++        var sinceTile = (now - tile.timeAdded) / fadeDuration;
++        var sinceParent = parentTile ? (now - parentTile.timeAdded) / fadeDuration : -1;
+ 
+-        if ('duration' in options) {
+-            options.duration = +options.duration;
++        var idealZ = tile.source._pyramid.coveringZoomLevel(transform);
++        var parentFurther = parentTile ? Math.abs(parentTile.coord.z - idealZ) > Math.abs(tile.coord.z - idealZ) : false;
++
++        if (!parentTile || parentFurther) {
++            // if no parent or parent is older
++            opacity[0] = util.clamp(sinceTile, 0, 1);
++            opacity[1] = 1 - opacity[0];
+         } else {
+-            var V = 'screenSpeed' in options ? +options.screenSpeed / rho : +options.speed;
+-            options.duration = 1000 * S / V;
++            // parent is younger, zooming out
++            opacity[0] = util.clamp(1 - sinceParent, 0, 1);
++            opacity[1] = 1 - opacity[0];
+         }
++    }
+ 
+-        this.zooming = true;
+-        if (startBearing !== bearing) this.rotating = true;
+-        if (startPitch !== pitch) this.pitching = true;
++    var op = layer.paint['raster-opacity'];
++    opacity[0] *= op;
++    opacity[1] *= op;
+ 
+-        this.fire('movestart', eventData);
+-        this.fire('zoomstart', eventData);
++    return opacity;
++}
+ 
+-        this._ease(function (k) {
+-            // s: The distance traveled along the flight path, measured in ρ-screenfuls.
+-            var s = k * S,
+-                us = u(s);
++},{"../util/struct_array":167,"../util/util":169}],88:[function(require,module,exports){
++'use strict';
+ 
+-            tr.zoom = startZoom + tr.scaleZoom(1 / w(s));
+-            tr.center = tr.unproject(from.add(to.sub(from).mult(us)), startWorldSize);
++var browser = require('../util/browser');
++var drawCollisionDebug = require('./draw_collision_debug');
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-            if (this.rotating) {
+-                tr.bearing = interpolate(startBearing, bearing, k);
+-            }
+-            if (this.pitching) {
+-                tr.pitch = interpolate(startPitch, pitch, k);
+-            }
+ 
+-            this.fire('move', eventData);
+-            this.fire('zoom', eventData);
+-            if (this.rotating) {
+-                this.fire('rotate', eventData);
+-            }
+-            if (this.pitching) {
+-                this.fire('pitch', eventData);
+-            }
+-        }, function() {
+-            this.fire('zoomend', eventData);
+-            this.fire('moveend', eventData);
+-            this.zooming = false;
+-            this.rotating = false;
+-            this.pitching = false;
+-        }, options);
++module.exports = drawSymbols;
+ 
+-        return this;
+-    },
++function drawSymbols(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
+ 
+-    isEasing: function() {
+-        return !!this._abortFn;
+-    },
++    var drawAcrossEdges = !(layer.layout['text-allow-overlap'] || layer.layout['icon-allow-overlap'] ||
++        layer.layout['text-ignore-placement'] || layer.layout['icon-ignore-placement']);
+ 
+-    /**
+-     * Stop current animation
+-     *
+-     * @returns {Map} `this`
+-     */
+-    stop: function() {
+-        if (this._abortFn) {
+-            this._abortFn();
+-            this._finishEase();
+-        }
+-        return this;
+-    },
++    var gl = painter.gl;
+ 
+-    _ease: function(frame, finish, options) {
+-        this._finishFn = finish;
+-        this._abortFn = browser.timed(function (t) {
+-            frame.call(this, options.easing(t));
+-            if (t === 1) {
+-                this._finishEase();
+-            }
+-        }, options.animate === false ? 0 : options.duration, this);
+-    },
++    // Disable the stencil test so that labels aren't clipped to tile boundaries.
++    //
++    // Layers with features that may be drawn overlapping aren't clipped. These
++    // layers are sorted in the y direction, and to draw the correct ordering near
++    // tile edges the icons are included in both tiles and clipped when drawing.
++    if (drawAcrossEdges) {
++        gl.disable(gl.STENCIL_TEST);
++    } else {
++        gl.enable(gl.STENCIL_TEST);
++    }
+ 
+-    _finishEase: function() {
+-        delete this._abortFn;
+-        // The finish function might emit events which trigger new eases, which
+-        // set a new _finishFn. Ensure we don't delete it unintentionally.
+-        var finish = this._finishFn;
+-        delete this._finishFn;
+-        finish.call(this);
+-    },
++    painter.setDepthSublayer(0);
++    painter.depthMask(false);
++    gl.disable(gl.DEPTH_TEST);
+ 
+-    // convert bearing so that it's numerically close to the current one so that it interpolates properly
+-    _normalizeBearing: function(bearing, currentBearing) {
+-        bearing = util.wrap(bearing, -180, 180);
+-        var diff = Math.abs(bearing - currentBearing);
+-        if (Math.abs(bearing - 360 - currentBearing) < diff) bearing -= 360;
+-        if (Math.abs(bearing + 360 - currentBearing) < diff) bearing += 360;
+-        return bearing;
+-    },
++    drawLayerSymbols(painter, source, layer, coords, false,
++            layer.paint['icon-translate'],
++            layer.paint['icon-translate-anchor'],
++            layer.layout['icon-rotation-alignment'],
++            layer.layout['icon-size'],
++            layer.paint['icon-halo-width'],
++            layer.paint['icon-halo-color'],
++            layer.paint['icon-halo-blur'],
++            layer.paint['icon-opacity'],
++            layer.paint['icon-color']);
+ 
+-    _updateEasing: function(duration, zoom, bezier) {
+-        var easing;
++    drawLayerSymbols(painter, source, layer, coords, true,
++            layer.paint['text-translate'],
++            layer.paint['text-translate-anchor'],
++            layer.layout['text-rotation-alignment'],
++            layer.layout['text-size'],
++            layer.paint['text-halo-width'],
++            layer.paint['text-halo-color'],
++            layer.paint['text-halo-blur'],
++            layer.paint['text-opacity'],
++            layer.paint['text-color']);
+ 
+-        if (this.ease) {
+-            var ease = this.ease,
+-                t = (Date.now() - ease.start) / ease.duration,
+-                speed = ease.easing(t + 0.01) - ease.easing(t),
++    gl.enable(gl.DEPTH_TEST);
+ 
+-                // Quick hack to make new bezier that is continuous with last
+-                x = 0.27 / Math.sqrt(speed * speed + 0.0001) * 0.01,
+-                y = Math.sqrt(0.27 * 0.27 - x * x);
++    drawCollisionDebug(painter, source, layer, coords);
++}
+ 
+-            easing = util.bezier(x, y, 0.25, 1);
+-        } else {
+-            easing = bezier ? util.bezier.apply(util, bezier) : util.ease;
+-        }
++function drawLayerSymbols(painter, source, layer, coords, isText,
++        translate,
++        translateAnchor,
++        rotationAlignment,
++        size,
++        haloWidth,
++        haloColor,
++        haloBlur,
++        opacity,
++        color) {
+ 
+-        // store information on current easing
+-        this.ease = {
+-            start: (new Date()).getTime(),
+-            to: Math.pow(2, zoom),
+-            duration: duration,
+-            easing: easing
+-        };
++    haloColor = util.premultiply(haloColor);
++    color = util.premultiply(color);
+ 
+-        return easing;
++    for (var j = 0; j < coords.length; j++) {
++        var tile = source.getTile(coords[j]);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bothBufferGroups = bucket.bufferGroups;
++        var bufferGroups = isText ? bothBufferGroups.glyph : bothBufferGroups.icon;
++        if (!bufferGroups.length) continue;
++
++        painter.enableTileClippingMask(coords[j]);
++        drawSymbol(painter, layer, coords[j].posMatrix, tile, bucket, bufferGroups, isText,
++                isText || bucket.sdfIcons, !isText && bucket.iconsNeedLinear,
++                isText ? bucket.adjustedTextSize : bucket.adjustedIconSize, bucket.fontstack,
++                translate,
++                translateAnchor,
++                rotationAlignment,
++                size,
++                haloWidth,
++                haloColor,
++                haloBlur,
++                opacity,
++                color);
+     }
+-});
++}
+ 
+-/**
+- * Pitch event. This event is emitted whenever the map's pitch changes.
+- *
+- * @event pitch
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++function drawSymbol(painter, layer, posMatrix, tile, bucket, bufferGroups, isText, sdf, iconsNeedLinear, adjustedSize, fontstack,
++        translate,
++        translateAnchor,
++        rotationAlignment,
++        size,
++        haloWidth,
++        haloColor,
++        haloBlur,
++        opacity,
++        color) {
++    var gl = painter.gl;
++    var tr = painter.transform;
++    var alignedWithMap = rotationAlignment === 'map';
+ 
+-},{"../geo/lng_lat":26,"../geo/lng_lat_bounds":27,"../util/browser":105,"../util/interpolate":113,"../util/util":119,"point-geometry":174}],88:[function(require,module,exports){
+-'use strict';
++    var defaultSize = isText ? 24 : 1;
++    var fontScale = size / defaultSize;
+ 
+-var Control = require('./control');
+-var DOM = require('../../util/dom');
+-var util = require('../../util/util');
++    var extrudeScale, s, gammaScale;
++    if (alignedWithMap) {
++        s = pixelsToTileUnits(tile, 1, painter.transform.zoom) * fontScale;
++        gammaScale = 1 / Math.cos(tr._pitch);
++        extrudeScale = [s, s];
++    } else {
++        s = painter.transform.altitude * fontScale;
++        gammaScale = 1;
++        extrudeScale = [ tr.pixelsToGLUnits[0] * s, tr.pixelsToGLUnits[1] * s];
++    }
+ 
+-module.exports = Attribution;
++    // calculate how much longer the real world distance is at the top of the screen
++    // than at the middle of the screen.
++    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
++    var x = tr.height / 2 * Math.tan(tr._pitch);
++    var extra = (topedgelength + x) / topedgelength - 1;
+ 
+-/**
+- * Creates an attribution control
+- * @class Attribution
+- * @param {Object} [options]
+- * @param {string} [options.position='bottom-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
+- * @example
+- * var map = new mapboxgl.Map({attributionControl: false})
+- *     .addControl(new mapboxgl.Attribution({position: 'top-left'}));
+- */
+-function Attribution(options) {
+-    util.setOptions(this, options);
+-}
++    if (!isText && !painter.style.sprite.loaded())
++        return;
+ 
+-Attribution.createAttributionString = function(sources) {
+-    var attributions = [];
++    var program = painter.useProgram(sdf ? 'sdf' : 'icon');
++    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(posMatrix, tile, translate, translateAnchor));
++    gl.uniform1i(program.u_skewed, alignedWithMap);
++    gl.uniform1f(program.u_extra, extra);
++    gl.uniform2fv(program.u_extrude_scale, extrudeScale);
+ 
+-    for (var id in sources) {
+-        var source = sources[id];
+-        if (source.attribution && attributions.indexOf(source.attribution) < 0) {
+-            attributions.push(source.attribution);
+-        }
+-    }
++    gl.activeTexture(gl.TEXTURE0);
++    gl.uniform1i(program.u_texture, 0);
+ 
+-    // remove any entries that are substrings of another entry.
+-    // first sort by length so that substrings come first
+-    attributions.sort(function (a, b) { return a.length - b.length; });
+-    attributions = attributions.filter(function (attrib, i) {
+-        for (var j = i + 1; j < attributions.length; j++) {
+-            if (attributions[j].indexOf(attrib) >= 0) { return false; }
+-        }
+-        return true;
+-    });
++    if (isText) {
++        // use the fonstack used when parsing the tile, not the fontstack
++        // at the current zoom level (layout['text-font']).
++        var glyphAtlas = fontstack && painter.glyphSource.getGlyphAtlas(fontstack);
++        if (!glyphAtlas) return;
+ 
+-    return attributions.join(' | ');
+-};
++        glyphAtlas.updateTexture(gl);
++        gl.uniform2f(program.u_texsize, glyphAtlas.width / 4, glyphAtlas.height / 4);
++    } else {
++        var mapMoving = painter.options.rotating || painter.options.zooming;
++        var iconScaled = fontScale !== 1 || browser.devicePixelRatio !== painter.spriteAtlas.pixelRatio || iconsNeedLinear;
++        var iconTransformed = alignedWithMap || painter.transform.pitch;
++        painter.spriteAtlas.bind(gl, sdf || mapMoving || iconScaled || iconTransformed);
++        gl.uniform2f(program.u_texsize, painter.spriteAtlas.width / 4, painter.spriteAtlas.height / 4);
++    }
+ 
+-Attribution.prototype = util.inherit(Control, {
+-    options: {
+-        position: 'bottom-right'
+-    },
++    // adjust min/max zooms for variable font sizes
++    var zoomAdjust = Math.log(size / adjustedSize) / Math.LN2 || 0;
++    gl.uniform1f(program.u_zoom, (painter.transform.zoom - zoomAdjust) * 10); // current zoom level
+ 
+-    onAdd: function(map) {
+-        var className = 'mapboxgl-ctrl-attrib',
+-            container = this._container = DOM.create('div', className, map.getContainer());
++    gl.activeTexture(gl.TEXTURE1);
++    painter.frameHistory.bind(gl);
++    gl.uniform1i(program.u_fadetexture, 1);
+ 
+-        this._update();
+-        map.on('source.load', this._update.bind(this));
+-        map.on('source.change', this._update.bind(this));
+-        map.on('source.remove', this._update.bind(this));
+-        map.on('moveend', this._updateEditLink.bind(this));
++    var group;
+ 
+-        return container;
+-    },
++    if (sdf) {
++        var sdfPx = 8;
++        var blurOffset = 1.19;
++        var haloOffset = 6;
++        var gamma = 0.105 * defaultSize / size / browser.devicePixelRatio;
+ 
+-    _update: function() {
+-        if (this._map.style) {
+-            this._container.innerHTML = Attribution.createAttributionString(this._map.style.sources);
++        if (haloWidth) {
++            // Draw halo underneath the text.
++            gl.uniform1f(program.u_gamma, (haloBlur * blurOffset / fontScale / sdfPx + gamma) * gammaScale);
++            gl.uniform4fv(program.u_color, haloColor);
++            gl.uniform1f(program.u_opacity, opacity);
++            gl.uniform1f(program.u_buffer, (haloOffset - haloWidth / fontScale) / sdfPx);
++
++            for (var j = 0; j < bufferGroups.length; j++) {
++                group = bufferGroups[j];
++                group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++                gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++            }
+         }
+ 
+-        this._editLink = this._container.getElementsByClassName('mapbox-improve-map')[0];
+-        this._updateEditLink();
+-    },
++        gl.uniform1f(program.u_gamma, gamma * gammaScale);
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, opacity);
++        gl.uniform1f(program.u_buffer, (256 - 64) / 256);
+ 
+-    _updateEditLink: function() {
+-        if (this._editLink) {
+-            var center = this._map.getCenter();
+-            this._editLink.href = 'https://www.mapbox.com/map-feedback/#/' +
+-                    center.lng + '/' + center.lat + '/' + Math.round(this._map.getZoom() + 1);
++        for (var i = 0; i < bufferGroups.length; i++) {
++            group = bufferGroups[i];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++        }
++
++    } else {
++        gl.uniform1f(program.u_opacity, opacity);
++        for (var k = 0; k < bufferGroups.length; k++) {
++            group = bufferGroups[k];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+         }
+     }
+-});
++}
+ 
+-},{"../../util/dom":108,"../../util/util":119,"./control":89}],89:[function(require,module,exports){
++},{"../source/pixels_to_tile_units":97,"../util/browser":155,"../util/util":169,"./draw_collision_debug":83}],89:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = Control;
++module.exports = FrameHistory;
+ 
+-/**
+- * A base class for map-related interface elements.
+- *
+- * @class Control
+- */
+-function Control() {}
++function FrameHistory() {
++    this.changeTimes = new Float64Array(256);
++    this.changeOpacities = new Uint8Array(256);
++    this.opacities = new Uint8ClampedArray(256);
++    this.array = new Uint8Array(this.opacities.buffer);
+ 
+-Control.prototype = {
+-    /**
+-     * Add this control to the map, returning the control itself
+-     * for chaining. This will insert the control's DOM element into
+-     * the map's DOM element if the control has a `position` specified.
+-     *
+-     * @param {Map} map
+-     * @returns {Control} `this`
+-     */
+-    addTo: function(map) {
+-        this._map = map;
+-        var container = this._container = this.onAdd(map);
+-        if (this.options && this.options.position) {
+-            var pos = this.options.position;
+-            var corner = map._controlCorners[pos];
+-            container.className += ' mapboxgl-ctrl';
+-            if (pos.indexOf('bottom') !== -1) {
+-                corner.insertBefore(container, corner.firstChild);
+-            } else {
+-                corner.appendChild(container);
+-            }
++    this.fadeDuration = 300;
++    this.previousZoom = 0;
++    this.firstFrame = true;
++}
++
++FrameHistory.prototype.record = function(zoom) {
++    var now = Date.now();
++
++    if (this.firstFrame) {
++        now = 0;
++        this.firstFrame = false;
++    }
++
++    zoom = Math.floor(zoom * 10);
++
++    var z;
++    if (zoom < this.previousZoom) {
++        for (z = zoom + 1; z <= this.previousZoom; z++) {
++            this.changeTimes[z] = now;
++            this.changeOpacities[z] = this.opacities[z];
++        }
++    } else {
++        for (z = zoom; z > this.previousZoom; z--) {
++            this.changeTimes[z] = now;
++            this.changeOpacities[z] = this.opacities[z];
+         }
++    }
+ 
+-        return this;
+-    },
++    for (z = 0; z < 256; z++) {
++        var timeSince = now - this.changeTimes[z];
++        var opacityChange = timeSince / this.fadeDuration * 255;
++        if (z <= zoom) {
++            this.opacities[z] = this.changeOpacities[z] + opacityChange;
++        } else {
++            this.opacities[z] = this.changeOpacities[z] - opacityChange;
++        }
++    }
+ 
+-    /**
+-     * Remove this control from the map it has been added to.
+-     *
+-     * @returns {Control} `this`
+-     */
+-    remove: function() {
+-        this._container.parentNode.removeChild(this._container);
+-        if (this.onRemove) this.onRemove(this._map);
+-        this._map = null;
+-        return this;
++    this.changed = true;
++    this.previousZoom = zoom;
++};
++
++FrameHistory.prototype.bind = function(gl) {
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
++        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, 256, 1, 0, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
++
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        if (this.changed) {
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 256, 1, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
++            this.changed = false;
++        }
+     }
+ };
+ 
+ },{}],90:[function(require,module,exports){
+ 'use strict';
+ 
+-var Control = require('./control');
+-var browser = require('../../util/browser');
+-var DOM = require('../../util/dom');
+-var util = require('../../util/util');
+-
+-module.exports = Geolocate;
+-
+-var geoOptions = { enableHighAccuracy: false, timeout: 6000 /* 6sec */ };
+-
++module.exports = LineAtlas;
+ 
+ /**
+- * Creates a geolocation control
+- * @class Geolocate
+- * @param {Object} [options]
+- * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
+- * @example
+- * map.addControl(new mapboxgl.Geolocate({position: 'top-left'})); // position is optional
++ * A LineAtlas lets us reuse rendered dashed lines
++ * by writing many of them to a texture and then fetching their positions
++ * using .getDash.
++ *
++ * @param {number} width
++ * @param {number} height
++ * @private
+  */
+-function Geolocate(options) {
+-    util.setOptions(this, options);
+-}
++function LineAtlas(width, height) {
++    this.width = width;
++    this.height = height;
++    this.nextRow = 0;
+ 
+-Geolocate.prototype = util.inherit(Control, {
+-    options: {
+-        position: 'top-right'
+-    },
++    this.bytes = 4;
++    this.data = new Uint8Array(this.width * this.height * this.bytes);
+ 
+-    onAdd: function(map) {
+-        var className = 'mapboxgl-ctrl';
++    this.positions = {};
++}
+ 
+-        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
+-        if (!browser.supportsGeolocation) return container;
++LineAtlas.prototype.setSprite = function(sprite) {
++    this.sprite = sprite;
++};
+ 
+-        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
++/**
++ * Get or create a dash line pattern.
++ *
++ * @param {Array<number>} dasharray
++ * @param {boolean} round whether to add circle caps in between dash segments
++ * @returns {Object} position of dash texture in { y, height, width }
++ * @private
++ */
++LineAtlas.prototype.getDash = function(dasharray, round) {
++    var key = dasharray.join(",") + round;
+ 
+-        this._geolocateButton = DOM.create('button', (className + '-icon ' + className + '-geolocate'), this._container);
+-        this._geolocateButton.addEventListener('click', this._onClickGeolocate.bind(this));
+-        return container;
+-    },
++    if (!this.positions[key]) {
++        this.positions[key] = this.addDash(dasharray, round);
++    }
++    return this.positions[key];
++};
+ 
+-    _onContextMenu: function(e) {
+-        e.preventDefault();
+-    },
++LineAtlas.prototype.addDash = function(dasharray, round) {
+ 
+-    _onClickGeolocate: function() {
+-        navigator.geolocation.getCurrentPosition(this._success.bind(this), this._error.bind(this), geoOptions);
++    var n = round ? 7 : 0;
++    var height = 2 * n + 1;
++    var offset = 128;
+ 
+-        // This timeout ensures that we still call finish() even if
+-        // the user declines to share their location in Firefox
+-        this._timeoutId = setTimeout(this._finish.bind(this), 10000 /* 10sec */);
+-    },
++    if (this.nextRow + height > this.height) {
++        console.warn('LineAtlas out of space');
++        return null;
++    }
+ 
+-    _success: function(position) {
+-        this._map.jumpTo({
+-            center: [position.coords.longitude, position.coords.latitude],
+-            zoom: 17,
+-            bearing: 0,
+-            pitch: 0
+-        });
+-        this._finish();
+-    },
++    var length = 0;
++    for (var i = 0; i < dasharray.length; i++) {
++        length += dasharray[i];
++    }
+ 
+-    _error: function() {
+-        this._finish();
+-    },
++    var stretch = this.width / length;
++    var halfWidth = stretch / 2;
+ 
+-    _finish: function() {
+-        if (this._timeoutId) { clearTimeout(this._timeoutId); }
+-        this._timeoutId = undefined;
+-    }
++    // If dasharray has an odd length, both the first and last parts
++    // are dashes and should be joined seamlessly.
++    var oddLength = dasharray.length % 2 === 1;
+ 
+-});
++    for (var y = -n; y <= n; y++) {
++        var row = this.nextRow + n + y;
++        var index = this.width * row;
+ 
++        var left = oddLength ? -dasharray[dasharray.length - 1] : 0;
++        var right = dasharray[0];
++        var partIndex = 1;
+ 
+-},{"../../util/browser":105,"../../util/dom":108,"../../util/util":119,"./control":89}],91:[function(require,module,exports){
+-'use strict';
++        for (var x = 0; x < this.width; x++) {
+ 
+-var Control = require('./control');
+-var DOM = require('../../util/dom');
+-var util = require('../../util/util');
++            while (right < x / stretch) {
++                left = right;
++                right = right + dasharray[partIndex];
+ 
+-module.exports = Navigation;
++                if (oddLength && partIndex === dasharray.length - 1) {
++                    right += dasharray[0];
++                }
+ 
+-/**
+- * Creates a navigation control with zoom buttons and a compass
+- * @class Navigation
+- * @param {Object} [options]
+- * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
+- * @example
+- * map.addControl(new mapboxgl.Navigation({position: 'top-left'})); // position is optional
+- */
+-function Navigation(options) {
+-    util.setOptions(this, options);
+-}
++                partIndex++;
++            }
+ 
+-Navigation.prototype = util.inherit(Control, {
+-    options: {
+-        position: 'top-right'
+-    },
++            var distLeft = Math.abs(x - left * stretch);
++            var distRight = Math.abs(x - right * stretch);
++            var dist = Math.min(distLeft, distRight);
++            var inside = (partIndex % 2) === 1;
++            var signedDistance;
+ 
+-    onAdd: function(map) {
+-        var className = 'mapboxgl-ctrl';
++            if (round) {
++                // Add circle caps
++                var distMiddle = n ? y / n * (halfWidth + 1) : 0;
++                if (inside) {
++                    var distEdge = halfWidth - Math.abs(distMiddle);
++                    signedDistance = Math.sqrt(dist * dist + distEdge * distEdge);
++                } else {
++                    signedDistance = halfWidth - Math.sqrt(dist * dist + distMiddle * distMiddle);
++                }
++            } else {
++                signedDistance = (inside ? 1 : -1) * dist;
++            }
+ 
+-        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
+-        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
++            this.data[3 + (index + x) * 4] = Math.max(0, Math.min(255, signedDistance + offset));
++        }
++    }
+ 
+-        this._zoomInButton = this._createButton(className + '-icon ' + className + '-zoom-in', map.zoomIn.bind(map));
+-        this._zoomOutButton = this._createButton(className + '-icon ' + className + '-zoom-out', map.zoomOut.bind(map));
+-        this._compass = this._createButton(className + '-icon ' + className + '-compass', map.resetNorth.bind(map));
++    var pos = {
++        y: (this.nextRow + n + 0.5) / this.height,
++        height: 2 * n / this.height,
++        width: length
++    };
+ 
+-        this._compassArrow = DOM.create('div', 'arrow', this._compass);
++    this.nextRow += height;
++    this.dirty = true;
+ 
+-        this._compass.addEventListener('mousedown', this._onCompassDown.bind(this));
+-        this._onCompassMove = this._onCompassMove.bind(this);
+-        this._onCompassUp = this._onCompassUp.bind(this);
++    return pos;
++};
+ 
+-        map.on('rotate', this._rotateCompassArrow.bind(this));
+-        this._rotateCompassArrow();
++LineAtlas.prototype.bind = function(gl) {
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, this.width, this.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
+ 
+-        this._el = map.getCanvasContainer();
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+ 
+-        return container;
+-    },
++        if (this.dirty) {
++            this.dirty = false;
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
++        }
++    }
++};
+ 
+-    _onContextMenu: function(e) {
+-        e.preventDefault();
+-    },
++},{}],91:[function(require,module,exports){
++'use strict';
+ 
+-    _onCompassDown: function(e) {
+-        if (e.button !== 0) return;
++var browser = require('../util/browser');
++var mat4 = require('gl-matrix').mat4;
++var FrameHistory = require('./frame_history');
++var TilePyramid = require('../source/tile_pyramid');
++var EXTENT = require('../data/bucket').EXTENT;
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++var util = require('../util/util');
++var StructArrayType = require('../util/struct_array');
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('./vertex_array_object');
++var RasterBoundsArray = require('./draw_raster').RasterBoundsArray;
+ 
+-        DOM.disableDrag();
+-        document.addEventListener('mousemove', this._onCompassMove);
+-        document.addEventListener('mouseup', this._onCompassUp);
++module.exports = Painter;
+ 
+-        this._el.dispatchEvent(copyMouseEvent(e));
+-        e.stopPropagation();
+-    },
++/**
++ * Initialize a new painter object.
++ *
++ * @param {Canvas} gl an experimental-webgl drawing context
++ * @private
++ */
++function Painter(gl, transform) {
++    this.gl = gl;
++    this.transform = transform;
+ 
+-    _onCompassMove: function(e) {
+-        if (e.button !== 0) return;
++    this.reusableTextures = {};
++    this.preFbos = {};
+ 
+-        this._el.dispatchEvent(copyMouseEvent(e));
+-        e.stopPropagation();
+-    },
++    this.frameHistory = new FrameHistory();
+ 
+-    _onCompassUp: function(e) {
+-        if (e.button !== 0) return;
++    this.setup();
+ 
+-        document.removeEventListener('mousemove', this._onCompassMove);
+-        document.removeEventListener('mouseup', this._onCompassUp);
+-        DOM.enableDrag();
++    // Within each layer there are multiple distinct z-planes that can be drawn to.
++    // This is implemented using the WebGL depth buffer.
++    this.numSublayers = TilePyramid.maxUnderzooming + TilePyramid.maxOverzooming + 1;
++    this.depthEpsilon = 1 / Math.pow(2, 16);
+ 
+-        this._el.dispatchEvent(copyMouseEvent(e));
+-        e.stopPropagation();
+-    },
++    this.lineWidthRange = gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE);
++}
+ 
+-    _createButton: function(className, fn) {
+-        var a = DOM.create('button', className, this._container);
+-        a.addEventListener('click', function() { fn(); });
+-        return a;
+-    },
++util.extend(Painter.prototype, require('./painter/use_program'));
+ 
+-    _rotateCompassArrow: function() {
+-        var rotate = 'rotate(' + (this._map.transform.angle * (180 / Math.PI)) + 'deg)';
+-        this._compassArrow.style.transform = rotate;
+-    }
+-});
++/*
++ * Update the GL viewport, projection matrix, and transforms to compensate
++ * for a new width and height value.
++ */
++Painter.prototype.resize = function(width, height) {
++    var gl = this.gl;
+ 
++    this.width = width * browser.devicePixelRatio;
++    this.height = height * browser.devicePixelRatio;
++    gl.viewport(0, 0, this.width, this.height);
+ 
+-function copyMouseEvent(e) {
+-    return new MouseEvent(e.type, {
+-        button: 2,    // right click
+-        buttons: 2,   // right click
+-        bubbles: true,
+-        cancelable: true,
+-        detail: e.detail,
+-        view: e.view,
+-        screenX: e.screenX,
+-        screenY: e.screenY,
+-        clientX: e.clientX,
+-        clientY: e.clientY,
+-        movementX: e.movementX,
+-        movementY: e.movementY,
+-        ctrlKey: e.ctrlKey,
+-        shiftKey: e.shiftKey,
+-        altKey: e.altKey,
+-        metaKey: e.metaKey
+-    });
+-}
++};
+ 
++Painter.prototype.setup = function() {
++    var gl = this.gl;
+ 
+-},{"../../util/dom":108,"../../util/util":119,"./control":89}],92:[function(require,module,exports){
+-'use strict';
++    gl.verbose = true;
+ 
+-var DOM = require('../../util/dom'),
+-    LngLatBounds = require('../../geo/lng_lat_bounds'),
+-    util = require('../../util/util');
++    // We are blending the new pixels *behind* the existing pixels. That way we can
++    // draw front-to-back and use then stencil buffer to cull opaque pixels early.
++    gl.enable(gl.BLEND);
++    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+ 
+-module.exports = BoxZoomHandler;
++    gl.enable(gl.STENCIL_TEST);
+ 
+-/**
+- * The `BoxZoomHandler` allows a user to zoom the map to fit a bounding box.
+- * The bounding box is defined by holding `shift` while dragging the cursor.
+- * @class BoxZoomHandler
+- */
+-function BoxZoomHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
+-    this._container = map.getContainer();
++    gl.enable(gl.DEPTH_TEST);
++    gl.depthFunc(gl.LEQUAL);
+ 
+-    util.bindHandlers(this);
+-}
++    this._depthMask = false;
++    gl.depthMask(false);
+ 
+-BoxZoomHandler.prototype = {
++    var PosArray = this.PosArray = new StructArrayType({
++        members: [{ name: 'a_pos', type: 'Int16', components: 2 }]
++    });
+ 
+-    _enabled: false,
+-    _active: false,
++    var tileExtentArray = new PosArray();
++    tileExtentArray.emplaceBack(0, 0);
++    tileExtentArray.emplaceBack(EXTENT, 0);
++    tileExtentArray.emplaceBack(0, EXTENT);
++    tileExtentArray.emplaceBack(EXTENT, EXTENT);
++    this.tileExtentBuffer = new Buffer(tileExtentArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
++    this.tileExtentVAO = new VertexArrayObject();
++    this.tileExtentPatternVAO = new VertexArrayObject();
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "box zoom" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
+-    },
++    var debugArray = new PosArray();
++    debugArray.emplaceBack(0, 0);
++    debugArray.emplaceBack(EXTENT, 0);
++    debugArray.emplaceBack(EXTENT, EXTENT);
++    debugArray.emplaceBack(0, EXTENT);
++    debugArray.emplaceBack(0, 0);
++    this.debugBuffer = new Buffer(debugArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
++    this.debugVAO = new VertexArrayObject();
+ 
+-    /**
+-     * Returns true if the "box zoom" interaction is currently active, i.e. currently being used.
+-     * @returns {boolean} active state
+-     */
+-    isActive: function () {
+-        return this._active;
+-    },
++    var rasterBoundsArray = new RasterBoundsArray();
++    rasterBoundsArray.emplaceBack(0, 0, 0, 0);
++    rasterBoundsArray.emplaceBack(EXTENT, 0, 32767, 0);
++    rasterBoundsArray.emplaceBack(0, EXTENT, 0, 32767);
++    rasterBoundsArray.emplaceBack(EXTENT, EXTENT, 32767, 32767);
++    this.rasterBoundsBuffer = new Buffer(rasterBoundsArray.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
++    this.rasterBoundsVAO = new VertexArrayObject();
++};
+ 
+-    /**
+-     * Enable the "box zoom" interaction.
+-     * @example
+-     *   map.boxZoom.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('mousedown', this._onMouseDown, false);
+-        this._enabled = true;
+-    },
++/*
++ * Reset the color buffers of the drawing canvas.
++ */
++Painter.prototype.clearColor = function() {
++    var gl = this.gl;
++    gl.clearColor(0, 0, 0, 0);
++    gl.clear(gl.COLOR_BUFFER_BIT);
++};
+ 
+-    /**
+-     * Disable the "box zoom" interaction.
+-     * @example
+-     *   map.boxZoom.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('mousedown', this._onMouseDown);
+-        this._enabled = false;
+-    },
++/*
++ * Reset the drawing canvas by clearing the stencil buffer so that we can draw
++ * new tiles at the same location, while retaining previously drawn pixels.
++ */
++Painter.prototype.clearStencil = function() {
++    var gl = this.gl;
++    gl.clearStencil(0x0);
++    gl.stencilMask(0xFF);
++    gl.clear(gl.STENCIL_BUFFER_BIT);
++};
+ 
+-    _onMouseDown: function (e) {
+-        if (!(e.shiftKey && e.button === 0)) return;
++Painter.prototype.clearDepth = function() {
++    var gl = this.gl;
++    gl.clearDepth(1);
++    this.depthMask(true);
++    gl.clear(gl.DEPTH_BUFFER_BIT);
++};
+ 
+-        document.addEventListener('mousemove', this._onMouseMove, false);
+-        document.addEventListener('keydown', this._onKeyDown, false);
+-        document.addEventListener('mouseup', this._onMouseUp, false);
++Painter.prototype._renderTileClippingMasks = function(coords) {
++    var gl = this.gl;
++    gl.colorMask(false, false, false, false);
++    this.depthMask(false);
++    gl.disable(gl.DEPTH_TEST);
++    gl.enable(gl.STENCIL_TEST);
+ 
+-        DOM.disableDrag();
+-        this._startPos = DOM.mousePos(this._el, e);
+-        this._active = true;
+-    },
++    // Only write clipping IDs to the last 5 bits. The first three are used for drawing fills.
++    gl.stencilMask(0xF8);
++    // Tests will always pass, and ref value will be written to stencil buffer.
++    gl.stencilOp(gl.KEEP, gl.KEEP, gl.REPLACE);
+ 
+-    _onMouseMove: function (e) {
+-        var p0 = this._startPos,
+-            p1 = DOM.mousePos(this._el, e);
++    var idNext = 1;
++    this._tileClippingMaskIDs = {};
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
++        var id = this._tileClippingMaskIDs[coord.id] = (idNext++) << 3;
+ 
+-        if (!this._box) {
+-            this._box = DOM.create('div', 'mapboxgl-boxzoom', this._container);
+-            this._container.classList.add('mapboxgl-crosshair');
+-            this._fireEvent('boxzoomstart', e);
+-        }
++        gl.stencilFunc(gl.ALWAYS, id, 0xF8);
+ 
+-        var minX = Math.min(p0.x, p1.x),
+-            maxX = Math.max(p0.x, p1.x),
+-            minY = Math.min(p0.y, p1.y),
+-            maxY = Math.max(p0.y, p1.y);
++        var program = this.useProgram('fill');
++        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
+ 
+-        DOM.setTransform(this._box, 'translate(' + minX + 'px,' + minY + 'px)');
++        // Draw the clipping mask
++        this.tileExtentVAO.bind(gl, program, this.tileExtentBuffer);
++        gl.drawArrays(gl.TRIANGLE_STRIP, 0, this.tileExtentBuffer.length);
++    }
+ 
+-        this._box.style.width = (maxX - minX) + 'px';
+-        this._box.style.height = (maxY - minY) + 'px';
+-    },
++    gl.stencilMask(0x00);
++    gl.colorMask(true, true, true, true);
++    this.depthMask(true);
++    gl.enable(gl.DEPTH_TEST);
++};
+ 
+-    _onMouseUp: function (e) {
+-        if (e.button !== 0) return;
++Painter.prototype.enableTileClippingMask = function(coord) {
++    var gl = this.gl;
++    gl.stencilFunc(gl.EQUAL, this._tileClippingMaskIDs[coord.id], 0xF8);
++};
+ 
+-        var p0 = this._startPos,
+-            p1 = DOM.mousePos(this._el, e),
+-            bounds = new LngLatBounds(this._map.unproject(p0), this._map.unproject(p1));
++// Overridden by headless tests.
++Painter.prototype.prepareBuffers = function() {};
++Painter.prototype.bindDefaultFramebuffer = function() {
++    var gl = this.gl;
++    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
++};
+ 
+-        this._finish();
++var draw = {
++    symbol: require('./draw_symbol'),
++    circle: require('./draw_circle'),
++    line: require('./draw_line'),
++    fill: require('./draw_fill'),
++    raster: require('./draw_raster'),
++    background: require('./draw_background'),
++    debug: require('./draw_debug')
++};
+ 
+-        if (p0.x === p1.x && p0.y === p1.y) {
+-            this._fireEvent('boxzoomcancel', e);
+-        } else {
+-            this._map
+-                .fitBounds(bounds, {linear: true})
+-                .fire('boxzoomend', { originalEvent: e, boxZoomBounds: bounds });
+-        }
+-    },
++Painter.prototype.render = function(style, options) {
++    this.style = style;
++    this.options = options;
++
++    this.lineAtlas = style.lineAtlas;
+ 
+-    _onKeyDown: function (e) {
+-        if (e.keyCode === 27) {
+-            this._finish();
+-            this._fireEvent('boxzoomcancel', e);
+-        }
+-    },
++    this.spriteAtlas = style.spriteAtlas;
++    this.spriteAtlas.setSprite(style.sprite);
+ 
+-    _finish: function () {
+-        this._active = false;
++    this.glyphSource = style.glyphSource;
+ 
+-        document.removeEventListener('mousemove', this._onMouseMove, false);
+-        document.removeEventListener('keydown', this._onKeyDown, false);
+-        document.removeEventListener('mouseup', this._onMouseUp, false);
++    this.frameHistory.record(this.transform.zoom);
+ 
+-        this._container.classList.remove('mapboxgl-crosshair');
++    this.prepareBuffers();
++    this.clearColor();
++    this.clearDepth();
+ 
+-        if (this._box) {
+-            this._box.parentNode.removeChild(this._box);
+-            this._box = null;
+-        }
++    this.showOverdrawInspector(options.showOverdrawInspector);
+ 
+-        DOM.enableDrag();
+-    },
++    this.depthRange = (style._order.length + 2) * this.numSublayers * this.depthEpsilon;
+ 
+-    _fireEvent: function (type, e) {
+-        return this._map.fire(type, { originalEvent: e });
+-    }
++    this.renderPass({isOpaquePass: true});
++    this.renderPass({isOpaquePass: false});
+ };
+ 
++Painter.prototype.renderPass = function(options) {
++    var groups = this.style._groups;
++    var isOpaquePass = options.isOpaquePass;
++    this.currentLayer = isOpaquePass ? this.style._order.length : -1;
+ 
+-/**
+- * Boxzoom start event. This event is emitted at the start of a box zoom interaction.
+- *
+- * @event boxzoomstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++    for (var i = 0; i < groups.length; i++) {
++        var group = groups[isOpaquePass ? groups.length - 1 - i : i];
++        var source = this.style.sources[group.source];
+ 
+-/**
+- * Boxzoom end event. This event is emitted at the end of a box zoom interaction
+- *
+- * @event boxzoomend
+- * @memberof Map
+- * @instance
+- * @type {Object}
+- * @property {Event} originalEvent the original DOM event
+- * @property {LngLatBounds} boxZoomBounds the bounds of the box zoom target
+- */
++        var j;
++        var coords = [];
++        if (source) {
++            coords = source.getVisibleCoordinates();
++            for (j = 0; j < coords.length; j++) {
++                coords[j].posMatrix = this.transform.calculatePosMatrix(coords[j], source.maxzoom);
++            }
++            this.clearStencil();
++            if (source.prepare) source.prepare();
++            if (source.isTileClipped) {
++                this._renderTileClippingMasks(coords);
++            }
++        }
+ 
+-/**
+- * Boxzoom cancel event.  This event is emitted when the user cancels a box zoom interaction,
+- *   or when the box zoom does not meet the minimum size threshold.
+- *
+- * @event boxzoomcancel
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++        if (isOpaquePass) {
++            if (!this._showOverdrawInspector) {
++                this.gl.disable(this.gl.BLEND);
++            }
++            this.isOpaquePass = true;
++        } else {
++            this.gl.enable(this.gl.BLEND);
++            this.isOpaquePass = false;
++            coords.reverse();
++        }
+ 
+-},{"../../geo/lng_lat_bounds":27,"../../util/dom":108,"../../util/util":119}],93:[function(require,module,exports){
+-'use strict';
++        for (j = 0; j < group.length; j++) {
++            var layer = group[isOpaquePass ? group.length - 1 - j : j];
++            this.currentLayer += isOpaquePass ? -1 : 1;
++            this.renderLayer(this, source, layer, coords);
++        }
+ 
+-module.exports = DoubleClickZoomHandler;
++        if (source) {
++            draw.debug(this, source, coords);
++        }
++    }
++};
+ 
+-/**
+- * The `DoubleClickZoomHandler` allows a user to zoom the map around point by
+- * double clicking.
+- * @class DoubleClickZoomHandler
+- */
+-function DoubleClickZoomHandler(map) {
+-    this._map = map;
+-    this._onDblClick = this._onDblClick.bind(this);
+-}
++Painter.prototype.depthMask = function(mask) {
++    if (mask !== this._depthMask) {
++        this._depthMask = mask;
++        this.gl.depthMask(mask);
++    }
++};
+ 
+-DoubleClickZoomHandler.prototype = {
++Painter.prototype.renderLayer = function(painter, source, layer, coords) {
++    if (layer.isHidden(this.transform.zoom)) return;
++    if (layer.type !== 'background' && !coords.length) return;
++    this.id = layer.id;
++    draw[layer.type](painter, source, layer, coords);
++};
+ 
+-    _enabled: false,
++Painter.prototype.setDepthSublayer = function(n) {
++    var farDepth = 1 - ((1 + this.currentLayer) * this.numSublayers + n) * this.depthEpsilon;
++    var nearDepth = farDepth - 1 + this.depthRange;
++    this.gl.depthRange(nearDepth, farDepth);
++};
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "double click to zoom" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
+-    },
++Painter.prototype.translatePosMatrix = function(matrix, tile, translate, anchor) {
++    if (!translate[0] && !translate[1]) return matrix;
+ 
+-    /**
+-     * Enable the "double click to zoom" interaction.
+-     * @example
+-     * map.doubleClickZoom.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._map.on('dblclick', this._onDblClick);
+-        this._enabled = true;
+-    },
++    if (anchor === 'viewport') {
++        var sinA = Math.sin(-this.transform.angle);
++        var cosA = Math.cos(-this.transform.angle);
++        translate = [
++            translate[0] * cosA - translate[1] * sinA,
++            translate[0] * sinA + translate[1] * cosA
++        ];
++    }
+ 
+-    /**
+-     * Disable the "double click to zoom" interaction.
+-     * @example
+-     * map.doubleClickZoom.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._map.off('dblclick', this._onDblClick);
+-        this._enabled = false;
+-    },
++    var translation = [
++        pixelsToTileUnits(tile, translate[0], this.transform.zoom),
++        pixelsToTileUnits(tile, translate[1], this.transform.zoom),
++        0
++    ];
+ 
+-    _onDblClick: function (e) {
+-        this._map.zoomTo(this._map.getZoom() +
+-            (e.originalEvent.shiftKey ? -1 : 1), {around: e.lngLat});
+-    }
++    var translatedMatrix = new Float32Array(16);
++    mat4.translate(translatedMatrix, matrix, translation);
++    return translatedMatrix;
+ };
+ 
+-},{}],94:[function(require,module,exports){
+-'use strict';
++Painter.prototype.saveTexture = function(texture) {
++    var textures = this.reusableTextures[texture.size];
++    if (!textures) {
++        this.reusableTextures[texture.size] = [texture];
++    } else {
++        textures.push(texture);
++    }
++};
+ 
+-var DOM = require('../../util/dom'),
+-    util = require('../../util/util');
+ 
+-module.exports = DragPanHandler;
++Painter.prototype.getTexture = function(size) {
++    var textures = this.reusableTextures[size];
++    return textures && textures.length > 0 ? textures.pop() : null;
++};
+ 
+-var inertiaLinearity = 0.3,
+-    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
+-    inertiaMaxSpeed = 1400, // px/s
+-    inertiaDeceleration = 2500; // px/s^2
++Painter.prototype.lineWidth = function(width) {
++    this.gl.lineWidth(util.clamp(width, this.lineWidthRange[0], this.lineWidthRange[1]));
++};
+ 
++Painter.prototype.showOverdrawInspector = function(enabled) {
++    if (!enabled && !this._showOverdrawInspector) return;
++    this._showOverdrawInspector = enabled;
+ 
+-/**
+- * The `DragPanHandler` allows a user to pan the map by clicking and dragging
+- * the cursor.
+- * @class DragPanHandler
+- */
+-function DragPanHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++    var gl = this.gl;
++    if (enabled) {
++        gl.blendFunc(gl.CONSTANT_COLOR, gl.ONE);
++        var numOverdrawSteps = 8;
++        var a = 1 / numOverdrawSteps;
++        gl.blendColor(a, a, a, 0);
++        gl.clearColor(0, 0, 0, 1);
++        gl.clear(gl.COLOR_BUFFER_BIT);
++    } else {
++        gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
++    }
++};
+ 
+-    util.bindHandlers(this);
+-}
++},{"../data/bucket":67,"../data/buffer":72,"../source/pixels_to_tile_units":97,"../source/tile_pyramid":102,"../util/browser":155,"../util/struct_array":167,"../util/util":169,"./draw_background":81,"./draw_circle":82,"./draw_debug":84,"./draw_fill":85,"./draw_line":86,"./draw_raster":87,"./draw_symbol":88,"./frame_history":89,"./painter/use_program":92,"./vertex_array_object":93,"gl-matrix":24}],92:[function(require,module,exports){
++'use strict';
+ 
+-DragPanHandler.prototype = {
+ 
+-    _enabled: false,
+-    _active: false,
++var path = require('path');
++var assert = require('assert');
++var util = require('../../util/util');
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "drag to pan" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
++// readFileSync calls must be written out long-form for brfs.
++var definitions = {
++    debug: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\n\nvoid main() {\n    gl_FragColor = u_color;\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1);\n}\n"
+     },
+-
+-    /**
+-     * Returns true if the "drag to pan" interaction is currently active, i.e. currently being used.
+-     * @returns {boolean} active state
+-     */
+-    isActive: function () {
+-        return this._active;
++    fill: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvoid main() {\n    gl_FragColor = u_color * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n"
+     },
+-
+-    /**
+-     * Enable the "drag to pan" interaction.
+-     * @example
+-     * map.dragPan.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('mousedown', this._onDown);
+-        this._el.addEventListener('touchstart', this._onDown);
+-        this._enabled = true;
++    circle: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp float u_blur;\nuniform lowp float u_opacity;\n\nvarying lowp vec4 v_color;\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main() {\n    float t = smoothstep(1.0 - max(u_blur, v_antialiasblur), 1.0, length(v_extrude));\n    gl_FragColor = v_color * (1.0 - t) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_extrude_scale;\nuniform float u_devicepixelratio;\n\nattribute vec2 a_pos;\n\n#ifdef ATTRIBUTE_A_COLOR\nattribute lowp vec4 a_color;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\nuniform lowp float u_color_t;\nattribute lowp vec4 a_color0;\nattribute lowp vec4 a_color1;\nattribute lowp vec4 a_color2;\nattribute lowp vec4 a_color3;\n#else\nuniform lowp vec4 a_color;\n#endif\n\n#ifdef ATTRIBUTE_A_RADIUS\nattribute mediump float a_radius;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\nuniform lowp float u_radius_t;\nattribute mediump vec4 a_radius;\n#else\nuniform mediump float a_radius;\n#endif\n\nvarying vec2 v_extrude;\nvarying lowp vec4 v_color;\nvarying lowp float v_antialiasblur;\n\nfloat evaluate_zoom_function_1(const vec4 values, const float t) {\n    if (t < 1.0) {\n        return mix(values[0], values[1], t);\n    } else if (t < 2.0) {\n        return mix(values[1], values[2], t - 1.0);\n    } else {\n        return mix(values[2], values[3], t - 2.0);\n    }\n}\n\nvec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) {\n    if (t < 1.0) {\n        return mix(value0, value1, t);\n    } else if (t < 2.0) {\n        return mix(value1, value2, t - 1.0);\n    } else {\n        return mix(value2, value3, t - 2.0);\n    }\n}\n\nvoid main(void) {\n\n#ifdef ATTRIBUTE_A_RADIUS\n    mediump float radius = a_radius / 10.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\n    mediump float radius = evaluate_zoom_function_1(a_radius, u_radius_t) / 10.0;\n#else\n    mediump float radius = a_radius;\n#endif\n\n    // unencode the extrusion vector that we snuck into the a_pos vector\n    v_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);\n\n    vec2 extrude = v_extrude * radius * u_extrude_scale;\n    // multiply a_pos by 0.5, since we had it * 2 in order to sneak\n    // in extrusion data\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1);\n\n    // gl_Position is divided by gl_Position.w after this shader runs.\n    // Multiply the extrude by it so that it isn't affected by it.\n    gl_Position.xy += extrude * gl_Position.w;\n\n#ifdef ATTRIBUTE_A_COLOR\n    v_color = a_color / 255.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\n    v_color = evaluate_zoom_function_4(a_color0, a_color1, a_color2, a_color3, u_color_t) / 255.0;\n#else\n    v_color = a_color;\n#endif\n\n    // This is a minimum blur distance that serves as a faux-antialiasing for\n    // the circle. since blur is a ratio of the circle's size and the intent is\n    // to keep the blur at roughly 1px, the two are inversely related.\n    v_antialiasblur = 1.0 / u_devicepixelratio / radius;\n}\n"
+     },
+-
+-    /**
+-     * Disable the "drag to pan" interaction.
+-     * @example
+-     * map.dragPan.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('mousedown', this._onDown);
+-        this._el.removeEventListener('touchstart', this._onDown);
+-        this._enabled = false;
++    line: {
++        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
++    },
++    linepattern: {
++        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform float u_point;\nuniform float u_blur;\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_fade;\nuniform float u_opacity;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0);\n    float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0);\n    float y_a = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_a.y);\n    float y_b = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_b.y);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, vec2(x_a, y_a));\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, vec2(x_b, y_b));\n\n    vec4 color = mix(texture2D(u_image, pos), texture2D(u_image, pos2), u_fade);\n\n    alpha *= u_opacity;\n\n    gl_FragColor = color * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 extrude = a_extrude * scale;\n    mediump vec2 dist = u_linewidth.s * extrude;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n    v_linesofar = a_linesofar;\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
++    },
++    linesdfpattern: {
++        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\nuniform sampler2D u_image;\nuniform float u_sdfgamma;\nuniform float u_mix;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float sdfdist_a = texture2D(u_image, v_tex_a).a;\n    float sdfdist_b = texture2D(u_image, v_tex_b).a;\n    float sdfdist = mix(sdfdist_a, sdfdist_b, u_mix);\n    alpha *= smoothstep(0.5 - u_sdfgamma, 0.5 + u_sdfgamma, sdfdist);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump vec2 u_linewidth;\nuniform mediump float u_ratio;\nuniform vec2 u_patternscale_a;\nuniform float u_tex_y_a;\nuniform vec2 u_patternscale_b;\nuniform float u_tex_y_b;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    v_tex_a = vec2(a_linesofar * u_patternscale_a.x, normal.y * u_patternscale_a.y + u_tex_y_a);\n    v_tex_b = vec2(a_linesofar * u_patternscale_b.x, normal.y * u_patternscale_b.y + u_tex_y_b);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
++    },
++    outline: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
++    },
++    outlinepattern: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    // find distance to outline for alpha interpolation\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    \n\n    gl_FragColor = mix(color1, color2, u_mix) * alpha * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
++    },
++    pattern: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    gl_FragColor = mix(color1, color2, u_mix) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n}\n"
++    },
++    raster: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_opacity0;\nuniform float u_opacity1;\nuniform sampler2D u_image0;\nuniform sampler2D u_image1;\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nuniform float u_brightness_low;\nuniform float u_brightness_high;\n\nuniform float u_saturation_factor;\nuniform float u_contrast_factor;\nuniform vec3 u_spin_weights;\n\nvoid main() {\n\n    // read and cross-fade colors from the main and parent tiles\n    vec4 color0 = texture2D(u_image0, v_pos0);\n    vec4 color1 = texture2D(u_image1, v_pos1);\n    vec4 color = color0 * u_opacity0 + color1 * u_opacity1;\n    vec3 rgb = color.rgb;\n\n    // spin\n    rgb = vec3(\n        dot(rgb, u_spin_weights.xyz),\n        dot(rgb, u_spin_weights.zxy),\n        dot(rgb, u_spin_weights.yzx));\n\n    // saturation\n    float average = (color.r + color.g + color.b) / 3.0;\n    rgb += (average - rgb) * u_saturation_factor;\n\n    // contrast\n    rgb = (rgb - 0.5) * u_contrast_factor + 0.5;\n\n    // brightness\n    vec3 u_high_vec = vec3(u_brightness_low, u_brightness_low, u_brightness_low);\n    vec3 u_low_vec = vec3(u_brightness_high, u_brightness_high, u_brightness_high);\n\n    gl_FragColor = vec4(mix(u_high_vec, u_low_vec, rgb), color.a);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_tl_parent;\nuniform float u_scale_parent;\nuniform float u_buffer_scale;\n\nattribute vec2 a_pos;\nattribute vec2 a_texture_pos;\n\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5;\n    v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent;\n}\n"
++    },
++    icon: {
++        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp float u_opacity;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * u_opacity;\n    gl_FragColor = texture2D(u_texture, v_tex) * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
++    },
++    sdf: {
++        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform lowp float u_buffer;\nuniform lowp float u_gamma;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    lowp float dist = texture2D(u_texture, v_tex).a;\n    lowp float fade_alpha = texture2D(u_fadetexture, v_fade_tex).a;\n    lowp float gamma = u_gamma * v_gamma_scale;\n    lowp float alpha = smoothstep(u_buffer - gamma, u_buffer + gamma, dist) * fade_alpha;\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - y * u_extra);\n    v_gamma_scale = perspective_scale;\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
+     },
++    collisionbox: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_zoom;\nuniform float u_maxzoom;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n\n    float alpha = 0.5;\n\n    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha;\n\n    if (v_placement_zoom > u_zoom) {\n        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha;\n    }\n\n    if (u_zoom >= v_max_zoom) {\n        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25;\n    }\n\n    if (v_placement_zoom >= u_maxzoom) {\n        gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2;\n    }\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_extrude;\nattribute vec2 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_scale;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n     gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0);\n\n     v_max_zoom = a_data.x;\n     v_placement_zoom = a_data.y;\n}\n"
++    }
++};
+ 
+-    _onDown: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        if (this.isActive()) return;
++module.exports._createProgram = function(name, macros) {
++    var gl = this.gl;
++    var program = gl.createProgram();
++    var definition = definitions[name];
+ 
+-        if (e.touches) {
+-            document.addEventListener('touchmove', this._onMove);
+-            document.addEventListener('touchend', this._onTouchEnd);
+-        } else {
+-            document.addEventListener('mousemove', this._onMove);
+-            document.addEventListener('mouseup', this._onMouseUp);
++    var defines = '';
++    if (macros) {
++        for (var m = 0; m < macros.length; m++) {
++            defines += '#define ' + macros[m] + '\n';
+         }
++    }
+ 
+-        this._active = false;
+-        this._startPos = this._pos = DOM.mousePos(this._el, e);
+-        this._inertia = [[Date.now(), this._pos]];
+-    },
++    var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);
++    gl.shaderSource(fragmentShader, defines + definition.fragmentSource);
++    gl.compileShader(fragmentShader);
++    assert(gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(fragmentShader));
++    gl.attachShader(program, fragmentShader);
+ 
+-    _onMove: function (e) {
+-        if (this._ignoreEvent(e)) return;
++    var vertexShader = gl.createShader(gl.VERTEX_SHADER);
++    gl.shaderSource(vertexShader, defines + definition.vertexSource);
++    gl.compileShader(vertexShader);
++    assert(gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(vertexShader));
++    gl.attachShader(program, vertexShader);
+ 
+-        if (!this.isActive()) {
+-            this._active = true;
+-            this._fireEvent('dragstart', e);
+-            this._fireEvent('movestart', e);
+-        }
++    gl.linkProgram(program);
++    assert(gl.getProgramParameter(program, gl.LINK_STATUS), gl.getProgramInfoLog(program));
+ 
+-        var pos = DOM.mousePos(this._el, e),
+-            map = this._map;
++    var attributes = {};
++    var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
++    for (var i = 0; i < numAttributes; i++) {
++        var attribute = gl.getActiveAttrib(program, i);
++        attributes[attribute.name] = i;
++    }
+ 
+-        map.stop();
+-        this._drainInertiaBuffer();
+-        this._inertia.push([Date.now(), pos]);
++    var uniforms = {};
++    var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
++    for (var ui = 0; ui < numUniforms; ui++) {
++        var uniform = gl.getActiveUniform(program, ui);
++        uniforms[uniform.name] = gl.getUniformLocation(program, uniform.name);
++    }
+ 
+-        map.transform.setLocationAtPoint(map.transform.pointLocation(this._pos), pos);
++    return util.extend({
++        program: program,
++        definition: definition,
++        attributes: attributes,
++        numAttributes: numAttributes
++    }, attributes, uniforms);
++};
+ 
+-        this._fireEvent('drag', e);
+-        this._fireEvent('move', e);
++module.exports._createProgramCached = function(name, macros) {
++    this.cache = this.cache || {};
++    if (this._showOverdrawInspector) {
++        macros = macros || [];
++        macros.push('OVERDRAW_INSPECTOR');
++    }
++    var key = JSON.stringify({name: name, macros: macros});
++    if (!this.cache[key]) {
++        this.cache[key] = this._createProgram(name, macros);
++    }
++    return this.cache[key];
++};
+ 
+-        this._pos = pos;
++module.exports.useProgram = function (nextProgramName, macros) {
++    var gl = this.gl;
+ 
+-        e.preventDefault();
+-    },
++    var nextProgram = this._createProgramCached(nextProgramName, macros);
++    var previousProgram = this.currentProgram;
+ 
+-    _onUp: function (e) {
+-        if (!this.isActive()) return;
++    if (previousProgram !== nextProgram) {
++        gl.useProgram(nextProgram.program);
++        this.currentProgram = nextProgram;
++    }
+ 
+-        this._active = false;
+-        this._fireEvent('dragend', e);
+-        this._drainInertiaBuffer();
++    return nextProgram;
++};
+ 
+-        var finish = function() {
+-            this._fireEvent('moveend', e);
+-        }.bind(this);
++},{"../../util/util":169,"assert":6,"path":171}],93:[function(require,module,exports){
++'use strict';
+ 
+-        var inertia = this._inertia;
+-        if (inertia.length < 2) {
+-            finish();
+-            return;
+-        }
++var assert = require('assert');
+ 
+-        var last = inertia[inertia.length - 1],
+-            first = inertia[0],
+-            flingOffset = last[1].sub(first[1]),
+-            flingDuration = (last[0] - first[0]) / 1000;
++module.exports = VertexArrayObject;
+ 
+-        if (flingDuration === 0 || last[1].equals(first[1])) {
+-            finish();
+-            return;
+-        }
++function VertexArrayObject() {
++    this.boundProgram = null;
++    this.boundVertexBuffer = null;
++    this.boundVertexBuffer2 = null;
++    this.boundElementBuffer = null;
++    this.vao = null;
++}
+ 
+-        // calculate px/s velocity & adjust for increased initial animation speed when easing out
+-        var velocity = flingOffset.mult(inertiaLinearity / flingDuration),
+-            speed = velocity.mag(); // px/s
++var reported = false;
+ 
+-        if (speed > inertiaMaxSpeed) {
+-            speed = inertiaMaxSpeed;
+-            velocity._unit()._mult(speed);
+-        }
++VertexArrayObject.prototype.bind = function(gl, program, vertexBuffer, elementBuffer, vertexBuffer2) {
+ 
+-        var duration = speed / (inertiaDeceleration * inertiaLinearity),
+-            offset = velocity.mult(-duration / 2);
++    var ext = gl.extVertexArrayObject;
++    if (ext === undefined) {
++        ext = gl.extVertexArrayObject = gl.getExtension("OES_vertex_array_object");
++    }
+ 
+-        this._map.panBy(offset, {
+-            duration: duration * 1000,
+-            easing: inertiaEasing,
+-            noMoveStart: true
+-        }, { originalEvent: e });
+-    },
++    if (ext) {
++        if (!this.vao) this.vao = ext.createVertexArrayOES();
++        ext.bindVertexArrayOES(this.vao);
++    } else if (!reported) {
++        console.warn('Not using VertexArrayObject extension.');
++        reported = true;
++    }
+ 
+-    _onMouseUp: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        this._onUp(e);
+-        document.removeEventListener('mousemove', this._onMove);
+-        document.removeEventListener('mouseup', this._onMouseUp);
+-    },
++    if (!this.boundProgram) {
+ 
+-    _onTouchEnd: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        this._onUp(e);
+-        document.removeEventListener('touchmove', this._onMove);
+-        document.removeEventListener('touchend', this._onTouchEnd);
+-    },
++        var numPrevAttributes = ext ? 0 : (gl.currentNumAttributes || 0);
++        var numNextAttributes = program.numAttributes;
++        var i;
+ 
+-    _fireEvent: function (type, e) {
+-        return this._map.fire(type, { originalEvent: e });
+-    },
++        // Enable all attributes for the new program.
++        for (i = numPrevAttributes; i < numNextAttributes; i++) {
++            gl.enableVertexAttribArray(i);
++        }
+ 
+-    _ignoreEvent: function (e) {
+-        var map = this._map;
++        if (!ext) {
++            // Disable all attributes from the previous program that aren't used in
++            // the new program. Note: attribute indices are *not* program specific!
++            // WebGL breaks if you disable attribute 0. http://stackoverflow.com/questions/20305231
++            assert(i > 0);
++            for (i = numNextAttributes; i < numPrevAttributes; i++) {
++                gl.disableVertexAttribArray(i);
++            }
++            gl.currentNumAttributes = numNextAttributes;
++        }
++
++        vertexBuffer.bind(gl);
++        vertexBuffer.setVertexAttribPointers(gl, program);
++        if (vertexBuffer2) {
++            vertexBuffer2.bind(gl);
++            vertexBuffer2.setVertexAttribPointers(gl, program);
++        }
++        if (elementBuffer) {
++            elementBuffer.bind(gl);
++        }
+ 
+-        if (map.boxZoom && map.boxZoom.isActive()) return true;
+-        if (map.dragRotate && map.dragRotate.isActive()) return true;
+-        if (e.touches) {
+-            return (e.touches.length > 1);
+-        } else {
+-            if (e.ctrlKey) return true;
+-            var buttons = 1,  // left button
+-                button = 0;   // left button
+-            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
++        if (ext) {
++            // store the arguments so that we can verify them when the vao is bound again
++            this.boundProgram = program;
++            this.boundVertexBuffer = vertexBuffer;
++            this.boundVertexBuffer2 = vertexBuffer2;
++            this.boundElementBuffer = elementBuffer;
+         }
+-    },
+ 
+-    _drainInertiaBuffer: function () {
+-        var inertia = this._inertia,
+-            now = Date.now(),
+-            cutoff = 160;   // msec
++    } else {
++        // verify that bind was called with the same arguments
++        assert(this.boundProgram === program, 'trying to bind a VAO to a different shader');
++        assert(this.boundVertexBuffer === vertexBuffer, 'trying to bind a VAO to a different vertex buffer');
++        assert(this.boundVertexBuffer2 === vertexBuffer2, 'trying to bind a VAO to a different vertex buffer');
++        assert(this.boundElementBuffer === elementBuffer, 'trying to bind a VAO to a different element buffer');
++    }
++};
+ 
+-        while (inertia.length > 0 && now - inertia[0][0] > cutoff) inertia.shift();
++VertexArrayObject.prototype.unbind = function(gl) {
++    var ext = gl.extVertexArrayObject;
++    if (ext) {
++        ext.bindVertexArrayOES(null);
+     }
+ };
+ 
++VertexArrayObject.prototype.destroy = function(gl) {
++    var ext = gl.extVertexArrayObject;
++    if (ext && this.vao) {
++        ext.deleteVertexArrayOES(this.vao);
++        this.vao = null;
++    }
++};
+ 
+-/**
+- * Drag start event. This event is emitted at the start of a user-initiated pan interaction.
+- *
+- * @event dragstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++},{"assert":6}],94:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Drag event. This event is emitted repeatedly during a user-initiated pan interaction.
+- *
+- * @event drag
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++var util = require('../util/util');
++var Evented = require('../util/evented');
++var TilePyramid = require('./tile_pyramid');
++var Source = require('./source');
++var urlResolve = require('resolve-url');
++var EXTENT = require('../data/bucket').EXTENT;
++
++module.exports = GeoJSONSource;
+ 
+ /**
+- * Drag end event. This event is emitted at the end of a user-initiated pan interaction.
+- *
+- * @event dragend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++ * Create a GeoJSON data source instance given an options object
++ * @class GeoJSONSource
++ * @param {Object} [options]
++ * @param {Object|string} options.data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
++ * @param {number} [options.maxzoom=18] Maximum zoom to preserve detail at.
++ * @param {number} [options.buffer] Tile buffer on each side in pixels.
++ * @param {number} [options.tolerance] Simplification tolerance (higher means simpler) in pixels.
++ * @param {number} [options.cluster] If the data is a collection of point features, setting this to true clusters the points by radius into groups.
++ * @param {number} [options.clusterRadius=50] Radius of each cluster when clustering points, in pixels.
++ * @param {number} [options.clusterMaxZoom] Max zoom to cluster points on. Defaults to one zoom less than `maxzoom` (so that last zoom features are not clustered).
+ 
+-},{"../../util/dom":108,"../../util/util":119}],95:[function(require,module,exports){
+-'use strict';
++ * @example
++ * var sourceObj = new mapboxgl.GeoJSONSource({
++ *    data: {
++ *        "type": "FeatureCollection",
++ *        "features": [{
++ *            "type": "Feature",
++ *            "geometry": {
++ *                "type": "Point",
++ *                "coordinates": [
++ *                    -76.53063297271729,
++ *                    39.18174077994108
++ *                ]
++ *            }
++ *        }]
++ *    }
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
++ */
++function GeoJSONSource(options) {
++    options = options || {};
+ 
+-var DOM = require('../../util/dom'),
+-    Point = require('point-geometry'),
+-    util = require('../../util/util');
++    this._data = options.data;
+ 
+-module.exports = DragRotateHandler;
++    if (options.maxzoom !== undefined) this.maxzoom = options.maxzoom;
+ 
+-var inertiaLinearity = 0.25,
+-    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
+-    inertiaMaxSpeed = 180, // deg/s
+-    inertiaDeceleration = 720; // deg/s^2
++    var scale = EXTENT / this.tileSize;
+ 
++    this.geojsonVtOptions = {
++        buffer: (options.buffer !== undefined ? options.buffer : 128) * scale,
++        tolerance: (options.tolerance !== undefined ? options.tolerance : 0.375) * scale,
++        extent: EXTENT,
++        maxZoom: this.maxzoom
++    };
+ 
+-/**
+- * The `DragRotateHandler` allows a user to rotate the map by clicking and
+- * dragging the cursor while holding the right mouse button or the `ctrl` key.
+- * @class DragRotateHandler
+- */
+-function DragRotateHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++    this.cluster = options.cluster || false;
++    this.superclusterOptions = {
++        maxZoom: Math.min(options.clusterMaxZoom, this.maxzoom - 1) || (this.maxzoom - 1),
++        extent: EXTENT,
++        radius: (options.clusterRadius || 50) * scale,
++        log: false
++    };
+ 
+-    util.bindHandlers(this);
++    this._pyramid = new TilePyramid({
++        tileSize: this.tileSize,
++        minzoom: this.minzoom,
++        maxzoom: this.maxzoom,
++        reparseOverscaled: true,
++        load: this._loadTile.bind(this),
++        abort: this._abortTile.bind(this),
++        unload: this._unloadTile.bind(this),
++        add: this._addTile.bind(this),
++        remove: this._removeTile.bind(this),
++        redoPlacement: this._redoTilePlacement.bind(this)
++    });
+ }
+ 
+-DragRotateHandler.prototype = {
+-
+-    _enabled: false,
+-    _active: false,
++GeoJSONSource.prototype = util.inherit(Evented, /** @lends GeoJSONSource.prototype */{
++    minzoom: 0,
++    maxzoom: 18,
++    tileSize: 512,
++    _dirty: true,
++    isTileClipped: true,
+ 
+     /**
+-     * Returns the current enabled/disabled state of the "drag to rotate" interaction.
+-     * @returns {boolean} enabled state
++     * Update source geojson data and rerender map
++     *
++     * @param {Object|string} data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
++     * @returns {GeoJSONSource} this
+      */
+-    isEnabled: function () {
+-        return this._enabled;
+-    },
++    setData: function(data) {
++        this._data = data;
++        this._dirty = true;
+ 
+-    /**
+-     * Returns true if the "drag to rotate" interaction is currently active, i.e. currently being used.
+-     * @returns {boolean} active state
+-     */
+-    isActive: function () {
+-        return this._active;
+-    },
++        this.fire('change');
+ 
+-    /**
+-     * Enable the "drag to rotate" interaction.
+-     * @example
+-     * map.dragRotate.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('mousedown', this._onDown);
+-        this._enabled = true;
+-    },
++        if (this.map)
++            this.update(this.map.transform);
+ 
+-    /**
+-     * Disable the "drag to rotate" interaction.
+-     * @example
+-     * map.dragRotate.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('mousedown', this._onDown);
+-        this._enabled = false;
++        return this;
+     },
+ 
+-    _onDown: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        if (this.isActive()) return;
+-
+-        document.addEventListener('mousemove', this._onMove);
+-        document.addEventListener('mouseup', this._onUp);
+-
+-        this._active = false;
+-        this._inertia = [[Date.now(), this._map.getBearing()]];
+-        this._startPos = this._pos = DOM.mousePos(this._el, e);
+-        this._center = this._map.transform.centerPoint;  // Center of rotation
++    onAdd: function(map) {
++        this.map = map;
++    },
+ 
+-        // If the first click was too close to the center, move the center of rotation by 200 pixels
+-        // in the direction of the click.
+-        var startToCenter = this._startPos.sub(this._center),
+-            startToCenterDist = startToCenter.mag();
++    loaded: function() {
++        return this._loaded && this._pyramid.loaded();
++    },
+ 
+-        if (startToCenterDist < 200) {
+-            this._center = this._startPos.add(new Point(-200, 0)._rotate(startToCenter.angle()));
++    update: function(transform) {
++        if (this._dirty) {
++            this._updateData();
+         }
+ 
+-        e.preventDefault();
++        if (this._loaded) {
++            this._pyramid.update(this.used, transform);
++        }
+     },
+ 
+-    _onMove: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-
+-        if (!this.isActive()) {
+-            this._active = true;
+-            this._fireEvent('rotatestart', e);
+-            this._fireEvent('movestart', e);
++    reload: function() {
++        if (this._loaded) {
++            this._pyramid.reload();
+         }
++    },
+ 
+-        var map = this._map;
+-        map.stop();
++    serialize: function() {
++        return {
++            type: 'geojson',
++            data: this._data
++        };
++    },
+ 
+-        var p1 = this._pos,
+-            p2 = DOM.mousePos(this._el, e),
+-            center = this._center,
+-            bearingDiff = p1.sub(center).angleWith(p2.sub(center)) / Math.PI * 180,
+-            bearing = map.getBearing() - bearingDiff,
+-            inertia = this._inertia,
+-            last = inertia[inertia.length - 1];
++    getVisibleCoordinates: Source._getVisibleCoordinates,
++    getTile: Source._getTile,
+ 
+-        this._drainInertiaBuffer();
+-        inertia.push([Date.now(), map._normalizeBearing(bearing, last[1])]);
++    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
++    querySourceFeatures: Source._querySourceFeatures,
+ 
+-        map.transform.bearing = bearing;
++    _updateData: function() {
++        this._dirty = false;
++        var options = {
++            tileSize: this.tileSize,
++            source: this.id,
++            geojsonVtOptions: this.geojsonVtOptions,
++            cluster: this.cluster,
++            superclusterOptions: this.superclusterOptions
++        };
+ 
+-        this._fireEvent('rotate', e);
+-        this._fireEvent('move', e);
++        var data = this._data;
++        if (typeof data === 'string') {
++            options.url = typeof window != 'undefined' ? urlResolve(window.location.href, data) : data;
++        } else {
++            options.data = JSON.stringify(data);
++        }
++        this.workerID = this.dispatcher.send('parse geojson', options, function(err) {
++            this._loaded = true;
++            if (err) {
++                this.fire('error', {error: err});
++            } else {
++                this._pyramid.reload();
++                this.fire('change');
++            }
+ 
+-        this._pos = p2;
++        }.bind(this));
+     },
+ 
+-    _onUp: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        document.removeEventListener('mousemove', this._onMove);
+-        document.removeEventListener('mouseup', this._onUp);
++    _loadTile: function(tile) {
++        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
++        var params = {
++            uid: tile.uid,
++            coord: tile.coord,
++            zoom: tile.coord.z,
++            maxZoom: this.maxzoom,
++            tileSize: this.tileSize,
++            source: this.id,
++            overscaling: overscaling,
++            angle: this.map.transform.angle,
++            pitch: this.map.transform.pitch,
++            showCollisionBoxes: this.map.showCollisionBoxes
++        };
+ 
+-        if (!this.isActive()) return;
++        tile.workerID = this.dispatcher.send('load geojson tile', params, function(err, data) {
+ 
+-        this._active = false;
+-        this._fireEvent('rotateend', e);
+-        this._drainInertiaBuffer();
++            tile.unloadVectorData(this.map.painter);
+ 
+-        var map = this._map,
+-            mapBearing = map.getBearing(),
+-            inertia = this._inertia;
++            if (tile.aborted)
++                return;
+ 
+-        var finish = function() {
+-            if (Math.abs(mapBearing) < map.options.bearingSnap) {
+-                map.resetNorth({noMoveStart: true}, { originalEvent: e });
+-            } else {
+-                this._fireEvent('moveend', e);
++            if (err) {
++                this.fire('tile.error', {tile: tile});
++                return;
+             }
+-        }.bind(this);
+-
+-        if (inertia.length < 2) {
+-            finish();
+-            return;
+-        }
+-
+-        var first = inertia[0],
+-            last = inertia[inertia.length - 1],
+-            previous = inertia[inertia.length - 2],
+-            bearing = map._normalizeBearing(mapBearing, previous[1]),
+-            flingDiff = last[1] - first[1],
+-            sign = flingDiff < 0 ? -1 : 1,
+-            flingDuration = (last[0] - first[0]) / 1000;
+-
+-        if (flingDiff === 0 || flingDuration === 0) {
+-            finish();
+-            return;
+-        }
+ 
+-        var speed = Math.abs(flingDiff * (inertiaLinearity / flingDuration));  // deg/s
+-        if (speed > inertiaMaxSpeed) {
+-            speed = inertiaMaxSpeed;
+-        }
++            tile.loadVectorData(data, this.map.style);
+ 
+-        var duration = speed / (inertiaDeceleration * inertiaLinearity),
+-            offset = sign * speed * (duration / 2);
++            if (tile.redoWhenDone) {
++                tile.redoWhenDone = false;
++                tile.redoPlacement(this);
++            }
+ 
+-        bearing += offset;
++            this.fire('tile.load', {tile: tile});
+ 
+-        if (Math.abs(map._normalizeBearing(bearing, 0)) < map.options.bearingSnap) {
+-            bearing = map._normalizeBearing(0, bearing);
+-        }
++        }.bind(this), this.workerID);
++    },
+ 
+-        map.rotateTo(bearing, {
+-            duration: duration * 1000,
+-            easing: inertiaEasing,
+-            noMoveStart: true
+-        }, { originalEvent: e });
++    _abortTile: function(tile) {
++        tile.aborted = true;
+     },
+ 
+-    _fireEvent: function (type, e) {
+-        return this._map.fire(type, { originalEvent: e });
++    _addTile: function(tile) {
++        this.fire('tile.add', {tile: tile});
+     },
+ 
+-    _ignoreEvent: function (e) {
+-        var map = this._map;
++    _removeTile: function(tile) {
++        this.fire('tile.remove', {tile: tile});
++    },
+ 
+-        if (map.boxZoom && map.boxZoom.isActive()) return true;
+-        if (map.dragPan && map.dragPan.isActive()) return true;
+-        if (e.touches) {
+-            return (e.touches.length > 1);
+-        } else {
+-            var buttons = (e.ctrlKey ? 1 : 2),  // ? ctrl+left button : right button
+-                button = (e.ctrlKey ? 0 : 2);   // ? ctrl+left button : right button
+-            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
+-        }
++    _unloadTile: function(tile) {
++        tile.unloadVectorData(this.map.painter);
++        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
+     },
+ 
+-    _drainInertiaBuffer: function () {
+-        var inertia = this._inertia,
+-            now = Date.now(),
+-            cutoff = 160;   //msec
++    redoPlacement: Source.redoPlacement,
+ 
+-        while (inertia.length > 0 && now - inertia[0][0] > cutoff)
+-            inertia.shift();
++    _redoTilePlacement: function(tile) {
++        tile.redoPlacement(this);
+     }
++});
+ 
+-};
+-
+-
+-/**
+- * Rotate start event. This event is emitted at the start of a user-initiated rotate interaction.
+- *
+- * @event rotatestart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
+-
+-/**
+- * Rotate event. This event is emitted repeatedly during a user-initiated rotate interaction.
+- *
+- * @event rotate
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
+-
+-/**
+- * Rotate end event. This event is emitted at the end of a user-initiated rotate interaction.
+- *
+- * @event rotateend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
+-
+-},{"../../util/dom":108,"../../util/util":119,"point-geometry":174}],96:[function(require,module,exports){
++},{"../data/bucket":67,"../util/evented":161,"../util/util":169,"./source":99,"./tile_pyramid":102,"resolve-url":176}],95:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = KeyboardHandler;
+-
+-
+-var panDelta = 80,
+-    rotateDelta = 2,
+-    pitchDelta = 5;
++var Point = require('point-geometry');
++var VectorTileFeature = require('vector-tile').VectorTileFeature;
++var EXTENT = require('../data/bucket').EXTENT;
+ 
+-/**
+- * The `KeyboardHandler` allows a user to zoom, rotate, and pan the map using
+- * following keyboard shortcuts:
+- *  * `=` / `+`: increase zoom level by 1
+- *  * `Shift-=` / `Shift-+`: increase zoom level by 2
+- *  * `-`: decrease zoom level by 1
+- *  * `Shift--`: decrease zoom level by 2
+- *  * Arrow keys: pan by 80 pixels
+- *  * `Shift+⇢`: increase rotation by 2 degrees
+- *  * `Shift+⇠`: decrease rotation by 2 degrees
+- *  * `Shift+⇡`: increase pitch by 5 degrees
+- *  * `Shift+⇣`: decrease pitch by 5 degrees
+- * @class KeyboardHandler
+- */
+-function KeyboardHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++module.exports = GeoJSONWrapper;
+ 
+-    this._onKeyDown = this._onKeyDown.bind(this);
++// conform to vectortile api
++function GeoJSONWrapper(features) {
++    this.features = features;
++    this.length = features.length;
++    this.extent = EXTENT;
+ }
+ 
+-KeyboardHandler.prototype = {
+-
+-    _enabled: false,
+-
+-    /**
+-     * Returns the current enabled/disabled state of keyboard interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
+-    },
+-
+-    /**
+-     * Enable the ability to interact with the map using keyboard input.
+-     * @example
+-     * map.keyboard.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('keydown', this._onKeyDown, false);
+-        this._enabled = true;
+-    },
+-
+-    /**
+-     * Disable the ability to interact with the map using keyboard input.
+-     * @example
+-     * map.keyboard.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('keydown', this._onKeyDown);
+-        this._enabled = false;
+-    },
++GeoJSONWrapper.prototype.feature = function(i) {
++    return new FeatureWrapper(this.features[i]);
++};
+ 
+-    _onKeyDown: function (e) {
+-        if (e.altKey || e.ctrlKey || e.metaKey) return;
++function FeatureWrapper(feature) {
++    this.type = feature.type;
++    this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry;
++    this.properties = feature.tags;
++    this.extent = EXTENT;
++}
+ 
+-        var map = this._map,
+-            eventData = { originalEvent: e };
++FeatureWrapper.prototype.loadGeometry = function() {
++    var rings = this.rawGeometry;
++    this.geometry = [];
+ 
+-        switch (e.keyCode) {
+-        case 61:
+-        case 107:
+-        case 171:
+-        case 187:
+-            map.zoomTo(Math.round(map.getZoom()) + (e.shiftKey ? 2 : 1), eventData);
+-            break;
++    for (var i = 0; i < rings.length; i++) {
++        var ring = rings[i],
++            newRing = [];
++        for (var j = 0; j < ring.length; j++) {
++            newRing.push(new Point(ring[j][0], ring[j][1]));
++        }
++        this.geometry.push(newRing);
++    }
++    return this.geometry;
++};
+ 
+-        case 189:
+-        case 109:
+-        case 173:
+-            map.zoomTo(Math.round(map.getZoom()) - (e.shiftKey ? 2 : 1), eventData);
+-            break;
++FeatureWrapper.prototype.bbox = function() {
++    if (!this.geometry) this.loadGeometry();
+ 
+-        case 37:
+-            if (e.shiftKey) {
+-                map.easeTo({ bearing: map.getBearing() - rotateDelta }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([-panDelta, 0], eventData);
+-            }
+-            break;
++    var rings = this.geometry,
++        x1 = Infinity,
++        x2 = -Infinity,
++        y1 = Infinity,
++        y2 = -Infinity;
+ 
+-        case 39:
+-            if (e.shiftKey) {
+-                map.easeTo({ bearing: map.getBearing() + rotateDelta }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([panDelta, 0], eventData);
+-            }
+-            break;
++    for (var i = 0; i < rings.length; i++) {
++        var ring = rings[i];
+ 
+-        case 38:
+-            if (e.shiftKey) {
+-                map.easeTo({ pitch: map.getPitch() + pitchDelta }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([0, -panDelta], eventData);
+-            }
+-            break;
++        for (var j = 0; j < ring.length; j++) {
++            var coord = ring[j];
+ 
+-        case 40:
+-            if (e.shiftKey) {
+-                map.easeTo({ pitch: Math.max(map.getPitch() - pitchDelta, 0) }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([0, panDelta], eventData);
+-            }
+-            break;
++            x1 = Math.min(x1, coord.x);
++            x2 = Math.max(x2, coord.x);
++            y1 = Math.min(y1, coord.y);
++            y2 = Math.max(y2, coord.y);
+         }
+     }
+-};
+-
+-},{}],97:[function(require,module,exports){
+-'use strict';
+ 
+-var DOM = require('../../util/dom'),
+-    browser = require('../../util/browser'),
+-    util = require('../../util/util');
++    return [x1, y1, x2, y2];
++};
+ 
+-module.exports = ScrollZoomHandler;
++FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON;
+ 
++},{"../data/bucket":67,"point-geometry":174,"vector-tile":184}],96:[function(require,module,exports){
++'use strict';
+ 
+-var ua = typeof navigator !== 'undefined' ? navigator.userAgent.toLowerCase() : '',
+-    firefox = ua.indexOf('firefox') !== -1,
+-    safari = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') === -1;
++var util = require('../util/util');
++var Tile = require('./tile');
++var TileCoord = require('./tile_coord');
++var LngLat = require('../geo/lng_lat');
++var Point = require('point-geometry');
++var Evented = require('../util/evented');
++var ajax = require('../util/ajax');
++var EXTENT = require('../data/bucket').EXTENT;
++var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('../render/vertex_array_object');
+ 
++module.exports = ImageSource;
+ 
+ /**
+- * The `ScrollZoomHandler` allows a user to zoom the map by scrolling.
+- * @class ScrollZoomHandler
++ * Create an Image source instance given an options object
++ * @class ImageSource
++ * @param {Object} [options]
++ * @param {string} options.url A string URL of an image file
++ * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
++ * @example
++ * var sourceObj = new mapboxgl.ImageSource({
++ *    url: 'https://www.mapbox.com/images/foo.png',
++ *    coordinates: [
++ *        [-76.54335737228394, 39.18579907229748],
++ *        [-76.52803659439087, 39.1838364847587],
++ *        [-76.5295386314392, 39.17683392507606],
++ *        [-76.54520273208618, 39.17876344106642]
++ *    ]
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
+  */
+-function ScrollZoomHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++function ImageSource(options) {
++    this.urls = options.urls;
++    this.coordinates = options.coordinates;
+ 
+-    util.bindHandlers(this);
+-}
++    ajax.getImage(options.url, function(err, image) {
++        // @TODO handle errors via event.
++        if (err) return;
+ 
+-ScrollZoomHandler.prototype = {
++        this.image = image;
+ 
+-    _enabled: false,
++        this.image.addEventListener('load', function() {
++            this.map._rerender();
++        }.bind(this));
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "scroll to zoom" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
+-    },
++        this._loaded = true;
+ 
+-    /**
+-     * Enable the "scroll to zoom" interaction.
+-     * @example
+-     *   map.scrollZoom.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('wheel', this._onWheel, false);
+-        this._el.addEventListener('mousewheel', this._onWheel, false);
+-        this._enabled = true;
++        if (this.map) {
++            this.setCoordinates(options.coordinates);
++        }
++    }.bind(this));
++}
++
++ImageSource.prototype = util.inherit(Evented, /** @lends ImageSource.prototype */ {
++    onAdd: function(map) {
++        this.map = map;
++        if (this.image) {
++            this.setCoordinates(this.coordinates);
++        }
+     },
+ 
+     /**
+-     * Disable the "scroll to zoom" interaction.
+-     * @example
+-     *   map.scrollZoom.disable();
++     * Update image coordinates and rerender map
++     *
++     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
++     * @returns {ImageSource} this
+      */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('wheel', this._onWheel);
+-        this._el.removeEventListener('mousewheel', this._onWheel);
+-        this._enabled = false;
+-    },
++    setCoordinates: function(coordinates) {
++        this.coordinates = coordinates;
+ 
+-    _onWheel: function (e) {
+-        var value;
++        // Calculate which mercator tile is suitable for rendering the image in
++        // and create a buffer with the corner coordinates. These coordinates
++        // may be outside the tile, because raster tiles aren't clipped when rendering.
+ 
+-        if (e.type === 'wheel') {
+-            value = e.deltaY;
+-            // Firefox doubles the values on retina screens...
+-            if (firefox && e.deltaMode === window.WheelEvent.DOM_DELTA_PIXEL) value /= browser.devicePixelRatio;
+-            if (e.deltaMode === window.WheelEvent.DOM_DELTA_LINE) value *= 40;
++        var map = this.map;
++        var cornerZ0Coords = coordinates.map(function(coord) {
++            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
++        });
+ 
+-        } else if (e.type === 'mousewheel') {
+-            value = -e.wheelDeltaY;
+-            if (safari) value = value / 3;
+-        }
++        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
++        centerCoord.column = Math.round(centerCoord.column);
++        centerCoord.row = Math.round(centerCoord.row);
+ 
+-        var now = browser.now(),
+-            timeDelta = now - (this._time || 0);
++        var tileCoords = cornerZ0Coords.map(function(coord) {
++            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
++            return new Point(
++                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
++                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
++        });
+ 
+-        this._pos = DOM.mousePos(this._el, e);
+-        this._time = now;
++        var maxInt16 = 32767;
++        var array = new RasterBoundsArray();
++        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
++        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
++        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
++        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
+ 
+-        if (value !== 0 && (value % 4.000244140625) === 0) {
+-            // This one is definitely a mouse wheel event.
+-            this._type = 'wheel';
+-            // Normalize this value to match trackpad.
+-            value = Math.floor(value / 4);
++        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
++        this.tile.buckets = {};
+ 
+-        } else if (value !== 0 && Math.abs(value) < 4) {
+-            // This one is definitely a trackpad event because it is so small.
+-            this._type = 'trackpad';
++        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
++        this.tile.boundsVAO = new VertexArrayObject();
+ 
+-        } else if (timeDelta > 400) {
+-            // This is likely a new scroll action.
+-            this._type = null;
+-            this._lastValue = value;
++        this.fire('change');
+ 
+-            // Start a timeout in case this was a singular event, and dely it by up to 40ms.
+-            this._timeout = setTimeout(this._onTimeout, 40);
++        return this;
++    },
+ 
+-        } else if (!this._type) {
+-            // This is a repeating event, but we don't know the type of event just yet.
+-            // If the delta per time is small, we assume it's a fast trackpad; otherwise we switch into wheel mode.
+-            this._type = (Math.abs(timeDelta * value) < 200) ? 'trackpad' : 'wheel';
++    loaded: function() {
++        return this.image && this.image.complete;
++    },
+ 
+-            // Make sure our delayed event isn't fired again, because we accumulate
+-            // the previous event (which was less than 40ms ago) into this event.
+-            if (this._timeout) {
+-                clearTimeout(this._timeout);
+-                this._timeout = null;
+-                value += this._lastValue;
+-            }
+-        }
++    update: function() {
++        // noop
++    },
+ 
+-        // Slow down zoom if shift key is held for more precise zooming
+-        if (e.shiftKey && value) value = value / 4;
++    reload: function() {
++        // noop
++    },
+ 
+-        // Only fire the callback if we actually know what type of scrolling device the user uses.
+-        if (this._type) this._zoom(-value, e);
++    prepare: function() {
++        if (!this._loaded || !this.loaded()) return;
+ 
+-        e.preventDefault();
+-    },
++        var painter = this.map.painter;
++        var gl = painter.gl;
+ 
+-    _onTimeout: function () {
+-        this._type = 'wheel';
+-        this._zoom(-this._lastValue);
++        if (!this.tile.texture) {
++            this.tile.texture = gl.createTexture();
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
++        } else {
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
++        }
+     },
+ 
+-    _zoom: function (delta, e) {
+-        if (delta === 0) return;
+-        var map = this._map;
+-
+-        // Scale by sigmoid of scroll wheel delta.
+-        var scale = 2 / (1 + Math.exp(-Math.abs(delta / 100)));
+-        if (delta < 0 && scale !== 0) scale = 1 / scale;
++    getVisibleCoordinates: function() {
++        if (this.tile) return [this.tile.coord];
++        else return [];
++    },
+ 
+-        var fromScale = map.ease ? map.ease.to : map.transform.scale,
+-            targetZoom = map.transform.scaleZoom(fromScale * scale);
++    getTile: function() {
++        return this.tile;
++    },
+ 
+-        map.zoomTo(targetZoom, {
+-            duration: 0,
+-            around: map.unproject(this._pos),
+-            delayEndEvents: 200
+-        }, { originalEvent: e });
++    serialize: function() {
++        return {
++            type: 'image',
++            urls: this.urls,
++            coordinates: this.coordinates
++        };
+     }
+-};
++});
+ 
++},{"../data/bucket":67,"../data/buffer":72,"../geo/lng_lat":76,"../render/draw_raster":87,"../render/vertex_array_object":93,"../util/ajax":154,"../util/evented":161,"../util/util":169,"./tile":100,"./tile_coord":101,"point-geometry":174}],97:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Zoom start event. This event is emitted just before the map begins a transition from one
+- * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event zoomstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++var Bucket = require('../data/bucket');
+ 
+ /**
+- * Zoom event. This event is emitted repeatedly during animated transitions from one zoom level to
+- * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
++ * Converts a pixel value at a the given zoom level to tile units.
+  *
+- * @event zoom
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
+-
+-/**
+- * Zoom end event. This event is emitted just after the map completes a transition from one
+- * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
++ * The shaders mostly calculate everything in tile units so style
++ * properties need to be converted from pixels to tile units using this.
+  *
+- * @event zoomend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
++ * For example, a translation by 30 pixels at zoom 6.5 will be a
++ * translation by pixelsToTileUnits(30, 6.5) tile units.
++ *
++ * @param {object} tile a {Tile object} will work well, but any object that follows the format {coord: {TileCord object}, tileSize: {number}} will work
++ * @param {number} pixelValue
++ * @param {number} z
++ * @returns {number} value in tile units
++ * @private
+  */
++module.exports = function(tile, pixelValue, z) {
++    return pixelValue * (Bucket.EXTENT / (tile.tileSize * Math.pow(2, z - tile.coord.z)));
++};
+ 
+-},{"../../util/browser":105,"../../util/dom":108,"../../util/util":119}],98:[function(require,module,exports){
+-'use strict';
+-
+-var DOM = require('../../util/dom'),
+-    util = require('../../util/util');
+ 
+-module.exports = TouchZoomRotateHandler;
++},{"../data/bucket":67}],98:[function(require,module,exports){
++'use strict';
+ 
+-var inertiaLinearity = 0.15,
+-    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
+-    inertiaDeceleration = 12, // scale / s^2
+-    inertiaMaxSpeed = 2.5, // scale / s
+-    significantScaleThreshold = 0.15,
+-    significantRotateThreshold = 4;
++var util = require('../util/util');
++var ajax = require('../util/ajax');
++var Evented = require('../util/evented');
++var Source = require('./source');
++var normalizeURL = require('../util/mapbox').normalizeTileURL;
+ 
++module.exports = RasterTileSource;
+ 
+-/**
+- * The `TouchZoomRotateHandler` allows a user to zoom and rotate the map by
+- * pinching on a touchscreen.
+- * @class TouchZoomRotateHandler
+- */
+-function TouchZoomRotateHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++function RasterTileSource(options) {
++    util.extend(this, util.pick(options, ['url', 'tileSize']));
+ 
+-    util.bindHandlers(this);
++    Source._loadTileJSON.call(this, options);
+ }
+ 
+-TouchZoomRotateHandler.prototype = {
+-
+-    _enabled: false,
++RasterTileSource.prototype = util.inherit(Evented, {
++    minzoom: 0,
++    maxzoom: 22,
++    roundZoom: true,
++    tileSize: 512,
++    _loaded: false,
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "pinch to rotate and zoom" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
++    onAdd: function(map) {
++        this.map = map;
+     },
+ 
+-    /**
+-     * Enable the "pinch to rotate and zoom" interaction.
+-     * @example
+-     *   map.touchZoomRotate.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('touchstart', this._onStart, false);
+-        this._enabled = true;
++    loaded: function() {
++        return this._pyramid && this._pyramid.loaded();
+     },
+ 
+-    /**
+-     * Disable the "pinch to rotate and zoom" interaction.
+-     * @example
+-     *   map.touchZoomRotate.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('touchstart', this._onStart);
+-        this._enabled = false;
++    update: function(transform) {
++        if (this._pyramid) {
++            this._pyramid.update(this.used, transform, this.map.style.rasterFadeDuration);
++        }
+     },
+ 
+-    /**
+-     * Disable the "pinch to rotate" interaction, leaving the "pinch to zoom"
+-     * interaction enabled.
+-     * @example
+-     *   map.touchZoomRotate.disableRotation();
+-     */
+-    disableRotation: function() {
+-        this._rotationDisabled = true;
++    reload: function() {
++        // noop
+     },
+ 
+-    /**
+-     * Enable the "pinch to rotate" interaction, undoing a call to
+-     * `disableRotation`.
+-     * @example
+-     *   map.touchZoomRotate.enable();
+-     *   map.touchZoomRotate.enableRotation();
+-     */
+-    enableRotation: function() {
+-        this._rotationDisabled = false;
++    serialize: function() {
++        return {
++            type: 'raster',
++            url: this.url,
++            tileSize: this.tileSize
++        };
+     },
+ 
+-    _onStart: function (e) {
+-        if (e.touches.length !== 2) return;
+-
+-        var p0 = DOM.mousePos(this._el, e.touches[0]),
+-            p1 = DOM.mousePos(this._el, e.touches[1]);
++    getVisibleCoordinates: Source._getVisibleCoordinates,
++    getTile: Source._getTile,
+ 
+-        this._startVec = p0.sub(p1);
+-        this._startScale = this._map.transform.scale;
+-        this._startBearing = this._map.transform.bearing;
+-        this._gestureIntent = undefined;
+-        this._inertia = [];
++    _loadTile: function(tile) {
++        var url = normalizeURL(tile.coord.url(this.tiles), this.url, this.tileSize);
+ 
+-        document.addEventListener('touchmove', this._onMove, false);
+-        document.addEventListener('touchend', this._onEnd, false);
+-    },
++        tile.request = ajax.getImage(url, done.bind(this));
+ 
+-    _onMove: function (e) {
+-        if (e.touches.length !== 2) return;
++        function done(err, img) {
++            delete tile.request;
+ 
+-        var p0 = DOM.mousePos(this._el, e.touches[0]),
+-            p1 = DOM.mousePos(this._el, e.touches[1]),
+-            p = p0.add(p1).div(2),
+-            vec = p0.sub(p1),
+-            scale = vec.mag() / this._startVec.mag(),
+-            bearing = this._rotationDisabled ? 0 : vec.angleWith(this._startVec) * 180 / Math.PI,
+-            map = this._map;
++            if (tile.aborted)
++                return;
+ 
+-        // Determine 'intent' by whichever threshold is surpassed first,
+-        // then keep that state for the duration of this gesture.
+-        if (!this._gestureIntent) {
+-            var scalingSignificantly = (Math.abs(1 - scale) > significantScaleThreshold),
+-                rotatingSignificantly = (Math.abs(bearing) > significantRotateThreshold);
++            if (err) {
++                tile.errored = true;
++                this.fire('tile.error', {tile: tile, error: err});
++                return;
++            }
+ 
+-            if (rotatingSignificantly) {
+-                this._gestureIntent = 'rotate';
+-            } else if (scalingSignificantly) {
+-                this._gestureIntent = 'zoom';
++            var gl = this.map.painter.gl;
++            tile.texture = this.map.painter.getTexture(img.width);
++            if (tile.texture) {
++                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
++                gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, img);
++            } else {
++                tile.texture = gl.createTexture();
++                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++                gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
++                gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, img);
++                tile.texture.size = img.width;
+             }
++            gl.generateMipmap(gl.TEXTURE_2D);
+ 
+-            if (this._gestureIntent) {
+-                this._startVec = vec;
+-                this._startScale = map.transform.scale;
+-                this._startBearing = map.transform.bearing;
+-            }
++            tile.timeAdded = new Date().getTime();
++            this.map.animationLoop.set(this.style.rasterFadeDuration);
+ 
+-        } else {
+-            var param = { duration: 0, around: map.unproject(p) };
++            tile.source = this;
++            tile.loaded = true;
+ 
+-            if (this._gestureIntent === 'rotate') {
+-                param.bearing = this._startBearing + bearing;
+-            }
+-            if (this._gestureIntent === 'zoom' || this._gestureIntent === 'rotate') {
+-                param.zoom = map.transform.scaleZoom(this._startScale * scale);
+-            }
++            this.fire('tile.load', {tile: tile});
++        }
++    },
+ 
+-            map.stop();
+-            this._drainInertiaBuffer();
+-            this._inertia.push([Date.now(), scale, p]);
++    _abortTile: function(tile) {
++        tile.aborted = true;
+ 
+-            map.easeTo(param, { originalEvent: e });
++        if (tile.request) {
++            tile.request.abort();
++            delete tile.request;
+         }
++    },
+ 
+-        e.preventDefault();
++    _addTile: function(tile) {
++        this.fire('tile.add', {tile: tile});
+     },
+ 
+-    _onEnd: function (e) {
+-        document.removeEventListener('touchmove', this._onMove);
+-        document.removeEventListener('touchend', this._onEnd);
+-        this._drainInertiaBuffer();
++    _removeTile: function(tile) {
++        this.fire('tile.remove', {tile: tile});
++    },
+ 
+-        var inertia = this._inertia,
+-            map = this._map;
++    _unloadTile: function(tile) {
++        if (tile.texture) this.map.painter.saveTexture(tile.texture);
++    }
++});
+ 
+-        if (inertia.length < 2) {
+-            map.snapToNorth({}, { originalEvent: e });
+-            return;
+-        }
++},{"../util/ajax":154,"../util/evented":161,"../util/mapbox":166,"../util/util":169,"./source":99}],99:[function(require,module,exports){
++'use strict';
+ 
+-        var last = inertia[inertia.length - 1],
+-            first = inertia[0],
+-            lastScale = map.transform.scaleZoom(this._startScale * last[1]),
+-            firstScale = map.transform.scaleZoom(this._startScale * first[1]),
+-            scaleOffset = lastScale - firstScale,
+-            scaleDuration = (last[0] - first[0]) / 1000,
+-            p = last[2];
++var util = require('../util/util');
++var ajax = require('../util/ajax');
++var browser = require('../util/browser');
++var TilePyramid = require('./tile_pyramid');
++var normalizeURL = require('../util/mapbox').normalizeSourceURL;
++var TileCoord = require('./tile_coord');
+ 
+-        if (scaleDuration === 0 || lastScale === firstScale) {
+-            map.snapToNorth({}, { originalEvent: e });
++exports._loadTileJSON = function(options) {
++    var loaded = function(err, tileJSON) {
++        if (err) {
++            this.fire('error', {error: err});
+             return;
+         }
+ 
+-        // calculate scale/s speed and adjust for increased initial animation speed when easing
+-        var speed = scaleOffset * inertiaLinearity / scaleDuration; // scale/s
++        util.extend(this, util.pick(tileJSON,
++            ['tiles', 'minzoom', 'maxzoom', 'attribution']));
+ 
+-        if (Math.abs(speed) > inertiaMaxSpeed) {
+-            if (speed > 0) {
+-                speed = inertiaMaxSpeed;
+-            } else {
+-                speed = -inertiaMaxSpeed;
+-            }
++        if (tileJSON.vector_layers) {
++            this.vectorLayers = tileJSON.vector_layers;
++            this.vectorLayerIds = this.vectorLayers.map(function(layer) { return layer.id; });
+         }
+ 
+-        var duration = Math.abs(speed / (inertiaDeceleration * inertiaLinearity)) * 1000,
+-            targetScale = lastScale + speed * duration / 2000;
++        this._pyramid = new TilePyramid({
++            tileSize: this.tileSize,
++            minzoom: this.minzoom,
++            maxzoom: this.maxzoom,
++            roundZoom: this.roundZoom,
++            reparseOverscaled: this.reparseOverscaled,
++            load: this._loadTile.bind(this),
++            abort: this._abortTile.bind(this),
++            unload: this._unloadTile.bind(this),
++            add: this._addTile.bind(this),
++            remove: this._removeTile.bind(this),
++            redoPlacement: this._redoTilePlacement ? this._redoTilePlacement.bind(this) : undefined
++        });
+ 
+-        if (targetScale < 0) {
+-            targetScale = 0;
+-        }
++        this.fire('load');
++    }.bind(this);
+ 
+-        map.easeTo({
+-            zoom: targetScale,
+-            duration: duration,
+-            easing: inertiaEasing,
+-            around: map.unproject(p)
+-        }, { originalEvent: e });
+-    },
++    if (options.url) {
++        ajax.getJSON(normalizeURL(options.url), loaded);
++    } else {
++        browser.frame(loaded.bind(this, null, options));
++    }
++};
+ 
+-    _drainInertiaBuffer: function() {
+-        var inertia = this._inertia,
+-            now = Date.now(),
+-            cutoff = 160; // msec
++exports.redoPlacement = function() {
++    if (!this._pyramid) {
++        return;
++    }
+ 
+-        while (inertia.length > 2 && now - inertia[0][0] > cutoff) inertia.shift();
++    var ids = this._pyramid.orderedIDs();
++    for (var i = 0; i < ids.length; i++) {
++        var tile = this._pyramid.getTile(ids[i]);
++        this._redoTilePlacement(tile);
+     }
+ };
+ 
+-},{"../../util/dom":108,"../../util/util":119}],99:[function(require,module,exports){
+-'use strict';
++exports._getTile = function(coord) {
++    return this._pyramid.getTile(coord.id);
++};
+ 
+-/*
+- * Adds the map's position to its page's location hash.
+- * Passed as an option to the map object.
+- *
+- * @class mapboxgl.Hash
+- * @returns {Hash} `this`
+- */
+-module.exports = Hash;
++exports._getVisibleCoordinates = function() {
++    if (!this._pyramid) return [];
++    else return this._pyramid.renderedIDs().map(TileCoord.fromID);
++};
+ 
+-var util = require('../util/util');
++function sortTilesIn(a, b) {
++    var coordA = a.tile.coord;
++    var coordB = b.tile.coord;
++    return (coordA.z - coordB.z) || (coordA.y - coordB.y) || (coordA.x - coordB.x);
++}
+ 
+-function Hash() {
+-    util.bindAll([
+-        '_onHashChange',
+-        '_updateHash'
+-    ], this);
++function mergeRenderedFeatureLayers(tiles) {
++    var result = tiles[0] || {};
++    for (var i = 1; i < tiles.length; i++) {
++        var tile = tiles[i];
++        for (var layerID in tile) {
++            var tileFeatures = tile[layerID];
++            var resultFeatures = result[layerID];
++            if (resultFeatures === undefined) {
++                resultFeatures = result[layerID] = tileFeatures;
++            } else {
++                for (var f = 0; f < tileFeatures.length; f++) {
++                    resultFeatures.push(tileFeatures[f]);
++                }
++            }
++        }
++    }
++    return result;
+ }
+ 
+-Hash.prototype = {
+-    /*
+-     * Map element to listen for coordinate changes
+-     *
+-     * @param {Object} map
+-     * @returns {Hash} `this`
+-     */
+-    addTo: function(map) {
+-        this._map = map;
+-        window.addEventListener('hashchange', this._onHashChange, false);
+-        this._map.on('moveend', this._updateHash);
+-        return this;
+-    },
++exports._queryRenderedVectorFeatures = function(queryGeometry, params, zoom, bearing) {
++    if (!this._pyramid)
++        return {};
+ 
+-    /*
+-     * Removes hash
+-     *
+-     * @returns {Popup} `this`
+-     */
+-    remove: function() {
+-        window.removeEventListener('hashchange', this._onHashChange, false);
+-        this._map.off('moveend', this._updateHash);
+-        delete this._map;
+-        return this;
+-    },
++    var tilesIn = this._pyramid.tilesIn(queryGeometry);
+ 
+-    _onHashChange: function() {
+-        var loc = location.hash.replace('#', '').split('/');
+-        if (loc.length >= 3) {
+-            this._map.jumpTo({
+-                center: [+loc[2], +loc[1]],
+-                zoom: +loc[0],
+-                bearing: +(loc[3] || 0)
+-            });
+-            return true;
+-        }
+-        return false;
+-    },
++    tilesIn.sort(sortTilesIn);
+ 
+-    _updateHash: function() {
+-        var center = this._map.getCenter(),
+-            zoom = this._map.getZoom(),
+-            bearing = this._map.getBearing(),
+-            precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2)),
++    var styleLayers = this.map.style._layers;
+ 
+-            hash = '#' + (Math.round(zoom * 100) / 100) +
+-                '/' + center.lat.toFixed(precision) +
+-                '/' + center.lng.toFixed(precision) +
+-                (bearing ? '/' + (Math.round(bearing * 10) / 10) : '');
++    var renderedFeatureLayers = [];
++    for (var r = 0; r < tilesIn.length; r++) {
++        var tileIn = tilesIn[r];
++        if (!tileIn.tile.featureIndex) continue;
+ 
+-        window.history.replaceState('', '', hash);
++        renderedFeatureLayers.push(tileIn.tile.featureIndex.query({
++            queryGeometry: tileIn.queryGeometry,
++            scale: tileIn.scale,
++            tileSize: tileIn.tile.tileSize,
++            bearing: bearing,
++            params: params
++        }, styleLayers));
+     }
++    return mergeRenderedFeatureLayers(renderedFeatureLayers);
+ };
+ 
+-},{"../util/util":119}],100:[function(require,module,exports){
+-'use strict';
+-
+-var handlers = {
+-    scrollZoom: require('./handler/scroll_zoom'),
+-    boxZoom: require('./handler/box_zoom'),
+-    dragRotate: require('./handler/drag_rotate'),
+-    dragPan: require('./handler/drag_pan'),
+-    keyboard: require('./handler/keyboard'),
+-    doubleClickZoom: require('./handler/dblclick_zoom'),
+-    touchZoomRotate: require('./handler/touch_zoom_rotate')
+-};
+-
+-var DOM = require('../util/dom'),
+-    util = require('../util/util'),
+-    Point = require('point-geometry');
++exports._querySourceFeatures = function(params) {
++    if (!this._pyramid) {
++        return [];
++    }
+ 
+-module.exports = Interaction;
++    var pyramid = this._pyramid;
++    var tiles = pyramid.renderedIDs().map(function(id) {
++        return pyramid.getTile(id);
++    });
+ 
+-function Interaction(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++    var result = [];
+ 
+-    for (var name in handlers) {
+-        map[name] = new handlers[name](map);
++    var dataTiles = {};
++    for (var i = 0; i < tiles.length; i++) {
++        var tile = tiles[i];
++        var dataID = new TileCoord(Math.min(tile.sourceMaxZoom, tile.coord.z), tile.coord.x, tile.coord.y, 0).id;
++        if (!dataTiles[dataID]) {
++            dataTiles[dataID] = true;
++            tile.querySourceFeatures(result, params);
++        }
+     }
+ 
+-    util.bindHandlers(this);
+-}
+-
+-Interaction.prototype = {
+-    enable: function () {
+-        var options = this._map.options,
+-            el = this._el;
++    return result;
++};
+ 
+-        for (var name in handlers) {
+-            if (options[name]) this._map[name].enable();
+-        }
++/*
++ * Create a tiled data source instance given an options object
++ *
++ * @param {Object} options
++ * @param {string} options.type Either `raster` or `vector`.
++ * @param {string} options.url A tile source URL. This should either be `mapbox://{mapid}` or a full `http[s]` url that points to a TileJSON endpoint.
++ * @param {Array} options.tiles An array of tile sources. If `url` is not specified, `tiles` can be used instead to specify tile sources, as in the TileJSON spec. Other TileJSON keys such as `minzoom` and `maxzoom` can be specified in a source object if `tiles` is used.
++ * @param {string} options.id An optional `id` to assign to the source
++ * @param {number} [options.tileSize=512] Optional tile size (width and height in pixels, assuming tiles are square). This option is only configurable for raster sources
++ * @example
++ * var sourceObj = new mapboxgl.Source.create({
++ *    type: 'vector',
++ *    url: 'mapbox://mapbox.mapbox-streets-v5'
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
++ */
++exports.create = function(source) {
++    // This is not at file scope in order to avoid a circular require.
++    var sources = {
++        vector: require('./vector_tile_source'),
++        raster: require('./raster_tile_source'),
++        geojson: require('./geojson_source'),
++        video: require('./video_source'),
++        image: require('./image_source')
++    };
+ 
+-        el.addEventListener('mousedown', this._onMouseDown, false);
+-        el.addEventListener('mouseup', this._onMouseUp, false);
+-        el.addEventListener('mousemove', this._onMouseMove, false);
+-        el.addEventListener('touchstart', this._onTouchStart, false);
+-        el.addEventListener('touchend', this._onTouchEnd, false);
+-        el.addEventListener('touchmove', this._onTouchMove, false);
+-        el.addEventListener('touchcancel', this._onTouchCancel, false);
+-        el.addEventListener('click', this._onClick, false);
+-        el.addEventListener('dblclick', this._onDblClick, false);
+-        el.addEventListener('contextmenu', this._onContextMenu, false);
+-    },
++    return exports.is(source) ? source : new sources[source.type](source);
++};
+ 
+-    disable: function () {
+-        var options = this._map.options,
+-            el = this._el;
++exports.is = function(source) {
++    // This is not at file scope in order to avoid a circular require.
++    var sources = {
++        vector: require('./vector_tile_source'),
++        raster: require('./raster_tile_source'),
++        geojson: require('./geojson_source'),
++        video: require('./video_source'),
++        image: require('./image_source')
++    };
+ 
+-        for (var name in handlers) {
+-            if (options[name]) this._map[name].disable();
++    for (var type in sources) {
++        if (source instanceof sources[type]) {
++            return true;
+         }
++    }
+ 
+-        el.removeEventListener('mousedown', this._onMouseDown);
+-        el.removeEventListener('mouseup', this._onMouseUp);
+-        el.removeEventListener('mousemove', this._onMouseMove);
+-        el.removeEventListener('touchstart', this._onTouchStart);
+-        el.removeEventListener('touchend', this._onTouchEnd);
+-        el.removeEventListener('touchmove', this._onTouchMove);
+-        el.removeEventListener('touchcancel', this._onTouchCancel);
+-        el.removeEventListener('click', this._onClick);
+-        el.removeEventListener('dblclick', this._onDblClick);
+-        el.removeEventListener('contextmenu', this._onContextMenu);
+-    },
++    return false;
++};
+ 
+-    _onMouseDown: function (e) {
+-        this._map.stop();
+-        this._startPos = DOM.mousePos(this._el, e);
+-        this._fireMouseEvent('mousedown', e);
+-    },
++},{"../util/ajax":154,"../util/browser":155,"../util/mapbox":166,"../util/util":169,"./geojson_source":94,"./image_source":96,"./raster_tile_source":98,"./tile_coord":101,"./tile_pyramid":102,"./vector_tile_source":103,"./video_source":104}],100:[function(require,module,exports){
++'use strict';
+ 
+-    _onMouseUp: function (e) {
+-        var map = this._map,
+-            rotating = map.dragRotate && map.dragRotate.isActive();
++var util = require('../util/util');
++var Bucket = require('../data/bucket');
++var FeatureIndex = require('../data/feature_index');
++var vt = require('vector-tile');
++var Protobuf = require('pbf');
++var GeoJSONFeature = require('../util/vectortile_to_geojson');
++var featureFilter = require('feature-filter');
++var CollisionTile = require('../symbol/collision_tile');
++var CollisionBoxArray = require('../symbol/collision_box');
+ 
+-        if (this._contextMenuEvent && !rotating) {
+-            this._fireMouseEvent('contextmenu', this._contextMenuEvent);
+-        }
++module.exports = Tile;
+ 
+-        this._contextMenuEvent = null;
+-        this._fireMouseEvent('mouseup', e);
+-    },
++/**
++ * A tile object is the combination of a Coordinate, which defines
++ * its place, as well as a unique ID and data tracking for its content
++ *
++ * @param {Coordinate} coord
++ * @param {number} size
++ * @private
++ */
++function Tile(coord, size, sourceMaxZoom) {
++    this.coord = coord;
++    this.uid = util.uniqueId();
++    this.loaded = false; // TODO rename loaded
++    this.isUnloaded = false;
++    this.uses = 0;
++    this.tileSize = size;
++    this.sourceMaxZoom = sourceMaxZoom;
++    this.buckets = {};
++}
+ 
+-    _onMouseMove: function (e) {
+-        var map = this._map,
+-            el = this._el;
++Tile.prototype = {
+ 
+-        if (map.dragPan && map.dragPan.isActive()) return;
+-        if (map.dragRotate && map.dragRotate.isActive()) return;
++    /**
++     * Given a data object with a 'buffers' property, load it into
++     * this tile's elementGroups and buffers properties and set loaded
++     * to true. If the data is null, like in the case of an empty
++     * GeoJSON tile, no-op but still set loaded to true.
++     * @param {Object} data
++     * @returns {undefined}
++     * @private
++     */
++    loadVectorData: function(data, style) {
++        this.loaded = true;
+ 
+-        var target = e.toElement || e.target;
+-        while (target && target !== el) target = target.parentNode;
+-        if (target !== el) return;
++        // empty GeoJSON tile
++        if (!data) return;
+ 
+-        this._fireMouseEvent('mousemove', e);
++        this.collisionBoxArray = new CollisionBoxArray(data.collisionBoxArray);
++        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
++        this.featureIndex = new FeatureIndex(data.featureIndex, data.rawTileData, this.collisionTile);
++        this.rawTileData = data.rawTileData;
++        this.buckets = unserializeBuckets(data.buckets, style);
+     },
+ 
+-    _onTouchStart: function (e) {
+-        this._map.stop();
+-        this._fireTouchEvent('touchstart', e);
+-
+-        if (!e.touches || e.touches.length > 1) return;
++    /**
++     * given a data object and a GL painter, destroy and re-create
++     * all of its buffers.
++     * @param {Object} data
++     * @param {Object} painter
++     * @returns {undefined}
++     * @private
++     */
++    reloadSymbolData: function(data, painter, style) {
++        if (this.isUnloaded) return;
+ 
+-        if (!this._tapped) {
+-            this._tapped = setTimeout(this._onTouchTimeout, 300);
++        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
++        this.featureIndex.setCollisionTile(this.collisionTile);
+ 
+-        } else {
+-            clearTimeout(this._tapped);
+-            this._tapped = null;
+-            this._fireMouseEvent('dblclick', e);
++        // Destroy and delete existing symbol buckets
++        for (var id in this.buckets) {
++            var bucket = this.buckets[id];
++            if (bucket.type === 'symbol') {
++                bucket.destroy(painter.gl);
++                delete this.buckets[id];
++            }
+         }
+-    },
+ 
+-    _onTouchMove: function (e) {
+-        this._fireTouchEvent('touchmove', e);
++        // Add new symbol buckets
++        util.extend(this.buckets, unserializeBuckets(data.buckets, style));
+     },
+ 
+-    _onTouchEnd: function (e) {
+-        this._fireTouchEvent('touchend', e);
+-    },
++    /**
++     * Make sure that this tile doesn't own any data within a given
++     * painter, so that it doesn't consume any memory or maintain
++     * any references to the painter.
++     * @param {Object} painter gl painter object
++     * @returns {undefined}
++     * @private
++     */
++    unloadVectorData: function(painter) {
++        for (var id in this.buckets) {
++            var bucket = this.buckets[id];
++            bucket.destroy(painter.gl);
++        }
+ 
+-    _onTouchCancel: function (e) {
+-        this._fireTouchEvent('touchcancel', e);
++        this.collisionBoxArray = null;
++        this.collisionTile = null;
++        this.featureIndex = null;
++        this.rawTileData = null;
++        this.buckets = null;
++        this.loaded = false;
++        this.isUnloaded = true;
+     },
+ 
+-    _onTouchTimeout: function () {
+-        this._tapped = null;
+-    },
++    redoPlacement: function(source) {
++        if (!this.loaded || this.redoingPlacement) {
++            this.redoWhenDone = true;
++            return;
++        }
+ 
+-    _onClick: function (e) {
+-        var pos = DOM.mousePos(this._el, e);
++        this.redoingPlacement = true;
++
++        source.dispatcher.send('redo placement', {
++            uid: this.uid,
++            source: source.id,
++            angle: source.map.transform.angle,
++            pitch: source.map.transform.pitch,
++            showCollisionBoxes: source.map.showCollisionBoxes
++        }, done.bind(this), this.workerID);
++
++        function done(_, data) {
++            this.reloadSymbolData(data, source.map.painter, source.map.style);
++            source.fire('tile.load', {tile: this});
+ 
+-        if (pos.equals(this._startPos)) {
+-            this._fireMouseEvent('click', e);
++            this.redoingPlacement = false;
++            if (this.redoWhenDone) {
++                this.redoPlacement(source);
++                this.redoWhenDone = false;
++            }
+         }
+     },
+ 
+-    _onDblClick: function (e) {
+-        this._fireMouseEvent('dblclick', e);
+-        e.preventDefault();
++    getBucket: function(layer) {
++        return this.buckets && this.buckets[layer.ref || layer.id];
+     },
+ 
+-    _onContextMenu: function (e) {
+-        this._contextMenuEvent = e;
+-        e.preventDefault();
+-    },
++    querySourceFeatures: function(result, params) {
++        if (!this.rawTileData) return;
+ 
+-    _fireMouseEvent: function (type, e) {
+-        var pos = DOM.mousePos(this._el, e);
++        if (!this.vtLayers) {
++            this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
++        }
+ 
+-        return this._map.fire(type, {
+-            lngLat: this._map.unproject(pos),
+-            point: pos,
+-            originalEvent: e
+-        });
+-    },
++        var layer = this.vtLayers._geojsonTileLayer || this.vtLayers[params.sourceLayer];
+ 
+-    _fireTouchEvent: function (type, e) {
+-        var touches = DOM.touchPos(this._el, e),
+-            singular = touches.reduce(function (prev, curr, i, arr) {
+-                return prev.add(curr.div(arr.length));
+-            }, new Point(0, 0));
++        if (!layer) return;
+ 
+-        return this._map.fire(type, {
+-            lngLat: this._map.unproject(singular),
+-            point: singular,
+-            lngLats: touches.map(function(t) { return this._map.unproject(t); }, this),
+-            points: touches,
+-            originalEvent: e
+-        });
++        var filter = featureFilter(params.filter);
++        var coord = { z: this.coord.z, x: this.coord.x, y: this.coord.y };
++
++        for (var i = 0; i < layer.length; i++) {
++            var feature = layer.feature(i);
++            if (filter(feature)) {
++                var geojsonFeature = new GeoJSONFeature(feature, this.coord.z, this.coord.x, this.coord.y);
++                geojsonFeature.tile = coord;
++                result.push(geojsonFeature);
++            }
++        }
+     }
+ };
+ 
++function unserializeBuckets(input, style) {
++    var output = {};
++    for (var i = 0; i < input.length; i++) {
++        var layer = style.getLayer(input[i].layerId);
++        if (!layer) continue;
+ 
+-/**
+- * When an event [fires]{@link #Evented.fire} as a result of a
+- * user interaction, the event will be called with an EventData
+- * object containing the original DOM event along with coordinates of
+- * the event target.
+- *
+- * @typedef {Object} EventData
+- * @property {Event} originalEvent The original DOM event
+- * @property {Point} point The pixel location of the event
+- * @property {LngLat} lngLat The geographic location of the event
+- * @example
+- * map.on('click', function(data) {
+- *   var e = data && data.originalEvent;
+- *   console.log('got click ' + (e ? 'button = ' + e.button : ''));
+- * });
+- */
++        var bucket = Bucket.create(util.extend({
++            layer: layer,
++            childLayers: input[i].childLayerIds
++                .map(style.getLayer.bind(style))
++                .filter(function(layer) { return layer; })
++        }, input[i]));
++        output[bucket.id] = bucket;
++    }
++    return output;
++}
+ 
+-/**
+- * Mouse down event.
+- *
+- * @event mousedown
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [mousedown event](https://developer.mozilla.org/en-US/docs/Web/Events/mousedown)
+- */
++},{"../data/bucket":67,"../data/feature_index":73,"../symbol/collision_box":126,"../symbol/collision_tile":128,"../util/util":169,"../util/vectortile_to_geojson":170,"feature-filter":12,"pbf":173,"vector-tile":184}],101:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Mouse up event.
+- *
+- * @event mouseup
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [mouseup event](https://developer.mozilla.org/en-US/docs/Web/Events/mouseup)
+- */
++var assert = require('assert');
++var Coordinate = require('../geo/coordinate');
+ 
+-/**
+- * Mouse move event.
+- *
+- * @event mousemove
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [mousemouse event](https://developer.mozilla.org/en-US/docs/Web/Events/mousemove)
+- */
++module.exports = TileCoord;
+ 
+-/**
+- * Touch start event.
+- *
+- * @event touchstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchstart event](https://developer.mozilla.org/en-US/docs/Web/Events/touchstart).
+- */
++function TileCoord(z, x, y, w) {
++    assert(!isNaN(z) && z >= 0 && z % 1 === 0);
++    assert(!isNaN(x) && x >= 0 && x % 1 === 0);
++    assert(!isNaN(y) && y >= 0 && y % 1 === 0);
+ 
+-/**
+- * Touch end event.
+- *
+- * @event touchend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
+- */
++    if (isNaN(w)) w = 0;
+ 
+-/**
+- * Touch move event.
+- *
+- * @event touchmove
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchmove event](https://developer.mozilla.org/en-US/docs/Web/Events/touchmove).
+- */
++    this.z = +z;
++    this.x = +x;
++    this.y = +y;
++    this.w = +w;
+ 
+-/**
+- * Touch cancel event.
+- *
+- * @event touchcancel
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
+- */
++    // calculate id
++    w *= 2;
++    if (w < 0) w = w * -1 - 1;
++    var dim = 1 << this.z;
++    this.id = ((dim * dim * w + dim * this.y + this.x) * 32) + this.z;
+ 
+-/**
+- * Click event.
+- *
+- * @event click
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [click event](https://developer.mozilla.org/en-US/docs/Web/Events/click)
+- */
++    // for caching pos matrix calculation when rendering
++    this.posMatrix = null;
++}
+ 
+-/**
+- * Double click event.
+- *
+- * @event dblclick
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++TileCoord.prototype.toString = function() {
++    return this.z + "/" + this.x + "/" + this.y;
++};
+ 
+-/**
+- * Context menu event.
+- *
+- * @event contextmenu
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if available
+- */
++TileCoord.prototype.toCoordinate = function(sourceMaxZoom) {
++    var zoom = Math.min(this.z, sourceMaxZoom);
++    var tileScale = Math.pow(2, zoom);
++    var row = this.y;
++    var column = this.x + tileScale * this.w;
++    return new Coordinate(column, row, zoom);
++};
+ 
+-/**
+- * Load event. This event is emitted immediately after all necessary resources have been downloaded
+- * and the first visually complete rendering has occurred.
+- *
+- * @event load
+- * @memberof Map
+- * @instance
+- * @type {Object}
+- */
++// Parse a packed integer id into a TileCoord object
++TileCoord.fromID = function(id) {
++    var z = id % 32, dim = 1 << z;
++    var xy = ((id - z) / 32);
++    var x = xy % dim, y = ((xy - x) / dim) % dim;
++    var w = Math.floor(xy / (dim * dim));
++    if (w % 2 !== 0) w = w * -1 - 1;
++    w /= 2;
++    return new TileCoord(z, x, y, w);
++};
+ 
+-/**
+- * Move start event. This event is emitted just before the map begins a transition from one
+- * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event movestart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++// given a list of urls, choose a url template and return a tile URL
++TileCoord.prototype.url = function(urls, sourceMaxZoom) {
++    return urls[(this.x + this.y) % urls.length]
++        .replace('{prefix}', (this.x % 16).toString(16) + (this.y % 16).toString(16))
++        .replace('{z}', Math.min(this.z, sourceMaxZoom || this.z))
++        .replace('{x}', this.x)
++        .replace('{y}', this.y);
++};
+ 
+-/**
+- * Move event. This event is emitted repeatedly during animated transitions from one view to
+- * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event move
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++// Return the coordinate of the parent tile
++TileCoord.prototype.parent = function(sourceMaxZoom) {
++    if (this.z === 0) return null;
+ 
+-/**
+- * Move end event. This event is emitted just after the map completes a transition from one
+- * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event moveend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++    // the id represents an overscaled tile, return the same coordinates with a lower z
++    if (this.z > sourceMaxZoom) {
++        return new TileCoord(this.z - 1, this.x, this.y, this.w);
++    }
+ 
+-},{"../util/dom":108,"../util/util":119,"./handler/box_zoom":92,"./handler/dblclick_zoom":93,"./handler/drag_pan":94,"./handler/drag_rotate":95,"./handler/keyboard":96,"./handler/scroll_zoom":97,"./handler/touch_zoom_rotate":98,"point-geometry":174}],101:[function(require,module,exports){
+-'use strict';
++    return new TileCoord(this.z - 1, Math.floor(this.x / 2), Math.floor(this.y / 2), this.w);
++};
+ 
+-var Canvas = require('../util/canvas');
+-var util = require('../util/util');
+-var browser = require('../util/browser');
+-var Evented = require('../util/evented');
+-var DOM = require('../util/dom');
++TileCoord.prototype.wrapped = function() {
++    return new TileCoord(this.z, this.x, this.y, 0);
++};
+ 
+-var Style = require('../style/style');
+-var AnimationLoop = require('../style/animation_loop');
+-var Painter = require('../render/painter');
++// Return the coordinates of the tile's children
++TileCoord.prototype.children = function(sourceMaxZoom) {
+ 
+-var Transform = require('../geo/transform');
+-var Hash = require('./hash');
++    if (this.z >= sourceMaxZoom) {
++        // return a single tile coord representing a an overscaled tile
++        return [new TileCoord(this.z + 1, this.x, this.y, this.w)];
++    }
+ 
+-var Interaction = require('./interaction');
++    var z = this.z + 1;
++    var x = this.x * 2;
++    var y = this.y * 2;
++    return [
++        new TileCoord(z, x, y, this.w),
++        new TileCoord(z, x + 1, y, this.w),
++        new TileCoord(z, x, y + 1, this.w),
++        new TileCoord(z, x + 1, y + 1, this.w)
++    ];
++};
+ 
+-var Camera = require('./camera');
+-var LngLat = require('../geo/lng_lat');
+-var LngLatBounds = require('../geo/lng_lat_bounds');
+-var Point = require('point-geometry');
+-var Attribution = require('./control/attribution');
++// Taken from polymaps src/Layer.js
++// https://github.com/simplegeo/polymaps/blob/master/src/Layer.js#L333-L383
+ 
+-var defaultMinZoom = 0;
+-var defaultMaxZoom = 20;
++function edge(a, b) {
++    if (a.row > b.row) { var t = a; a = b; b = t; }
++    return {
++        x0: a.column,
++        y0: a.row,
++        x1: b.column,
++        y1: b.row,
++        dx: b.column - a.column,
++        dy: b.row - a.row
++    };
++}
+ 
+-/**
+- * Creates a map instance. This is usually the beginning of your map:
+- * you tell Mapbox GL JS where to put the map by specifying a `container`
+- * option, and the map's style with `style` and other attributes of the map,
+- * and in return Mapbox GL JS initializes the map on your page and returns
+- * a map variable that lets you programmatically call methods on the map.
+- * @class Map
+- * @param {Object} options
+- * @param {string|Element} options.container HTML element to initialize the map in (or element id as string)
+- * @param {number} [options.minZoom=0] Minimum zoom of the map
+- * @param {number} [options.maxZoom=20] Maximum zoom of the map
+- * @param {Object|string} [options.style] Map style. This must be an an object conforming to the schema described in the [style reference](https://mapbox.com/mapbox-gl-style-spec/), or a URL to a JSON style. To load a style from the Mapbox API, you can use a URL of the form `mapbox://styles/:owner/:style`, where `:owner` is your Mapbox account name and `:style` is the style ID. Or you can use one of the predefined Mapbox styles:
+- *   * `mapbox://styles/mapbox/basic-v8` - Simple and flexible starting template.
+- *   * `mapbox://styles/mapbox/bright-v8` - Template for complex custom basemaps.
+- *   * `mapbox://styles/mapbox/streets-v8` - A ready-to-use basemap, perfect for minor customization or incorporating your own data.
+- *   * `mapbox://styles/mapbox/light-v8` - Subtle light backdrop for data vizualizations.
+- *   * `mapbox://styles/mapbox/dark-v8` - Subtle dark backdrop for data vizualizations.
+- * @param {boolean} [options.hash=false] If `true`, the map will track and update the page URL according to map position
+- * @param {boolean} [options.interactive=true] If `false`, no mouse, touch, or keyboard listeners are attached to the map, so it will not respond to input
+- * @param {number} [options.bearingSnap=7] Snap to north threshold in degrees.
+- * @param {Array} [options.classes] Style class names with which to initialize the map
+- * @param {boolean} [options.attributionControl=true] If `true`, an attribution control will be added to the map.
+- * @param {boolean} [options.failIfMajorPerformanceCaveat=false] If `true`, map creation will fail if the implementation determines that the performance of the created WebGL context would be dramatically lower than expected.
+- * @param {boolean} [options.preserveDrawingBuffer=false] If `true`, The maps canvas can be exported to a PNG using `map.getCanvas().toDataURL();`. This is false by default as a performance optimization.
+- * @param {LngLatBounds|Array<Array<number>>} [options.maxBounds] If set, the map is constrained to the given bounds.
+- * @param {boolean} [options.scrollZoom=true] If `true`, enable the "scroll to zoom" interaction (see `ScrollZoomHandler`)
+- * @param {boolean} [options.boxZoom=true] If `true`, enable the "box zoom" interaction (see `BoxZoomHandler`)
+- * @param {boolean} [options.dragRotate=true] If `true`, enable the "drag to rotate" interaction (see `DragRotateHandler`).
+- * @param {boolean} [options.dragPan=true] If `true`, enable the "drag to pan" interaction (see `DragPanHandler`).
+- * @param {boolean} [options.keyboard=true] If `true`, enable keyboard shortcuts (see `KeyboardHandler`).
+- * @param {boolean} [options.doubleClickZoom=true] If `true`, enable the "double click to zoom" interaction (see `DoubleClickZoomHandler`).
+- * @param {boolean} [options.touchZoomRotate=true] If `true`, enable the "pinch to rotate and zoom" interaction (see `TouchZoomRotateHandler`).
+- * @example
+- * var map = new mapboxgl.Map({
+- *   container: 'map',
+- *   center: [-122.420679, 37.772537],
+- *   zoom: 13,
+- *   style: style_object,
+- *   hash: true
+- * });
+- */
+-var Map = module.exports = function(options) {
++function scanSpans(e0, e1, ymin, ymax, scanLine) {
++    var y0 = Math.max(ymin, Math.floor(e1.y0));
++    var y1 = Math.min(ymax, Math.ceil(e1.y1));
+ 
+-    options = util.inherit(this.options, options);
+-    this._interactive = options.interactive;
+-    this._failIfMajorPerformanceCaveat = options.failIfMajorPerformanceCaveat;
+-    this._preserveDrawingBuffer = options.preserveDrawingBuffer;
++    // sort edges by x-coordinate
++    if ((e0.x0 === e1.x0 && e0.y0 === e1.y0) ?
++            (e0.x0 + e1.dy / e0.dy * e0.dx < e1.x1) :
++            (e0.x1 - e1.dy / e0.dy * e0.dx < e1.x0)) {
++        var t = e0; e0 = e1; e1 = t;
++    }
+ 
+-    if (typeof options.container === 'string') {
+-        this._container = document.getElementById(options.container);
+-    } else {
+-        this._container = options.container;
++    // scan lines!
++    var m0 = e0.dx / e0.dy;
++    var m1 = e1.dx / e1.dy;
++    var d0 = e0.dx > 0; // use y + 1 to compute x0
++    var d1 = e1.dx < 0; // use y + 1 to compute x1
++    for (var y = y0; y < y1; y++) {
++        var x0 = m0 * Math.max(0, Math.min(e0.dy, y + d0 - e0.y0)) + e0.x0;
++        var x1 = m1 * Math.max(0, Math.min(e1.dy, y + d1 - e1.y0)) + e1.x0;
++        scanLine(Math.floor(x1), Math.ceil(x0), y);
+     }
++}
+ 
+-    this.animationLoop = new AnimationLoop();
+-    this.transform = new Transform(options.minZoom, options.maxZoom);
++function scanTriangle(a, b, c, ymin, ymax, scanLine) {
++    var ab = edge(a, b),
++        bc = edge(b, c),
++        ca = edge(c, a);
+ 
+-    if (options.maxBounds) {
+-        this.setMaxBounds(options.maxBounds);
+-    }
++    var t;
+ 
+-    util.bindAll([
+-        '_forwardStyleEvent',
+-        '_forwardSourceEvent',
+-        '_forwardLayerEvent',
+-        '_forwardTileEvent',
+-        '_onStyleLoad',
+-        '_onStyleChange',
+-        '_onSourceAdd',
+-        '_onSourceRemove',
+-        '_onSourceUpdate',
+-        '_onWindowResize',
+-        'onError',
+-        '_update',
+-        '_render'
+-    ], this);
++    // sort edges by y-length
++    if (ab.dy > bc.dy) { t = ab; ab = bc; bc = t; }
++    if (ab.dy > ca.dy) { t = ab; ab = ca; ca = t; }
++    if (bc.dy > ca.dy) { t = bc; bc = ca; ca = t; }
+ 
+-    this._setupContainer();
+-    this._setupPainter();
++    // scan span! scan span!
++    if (ab.dy) scanSpans(ca, ab, ymin, ymax, scanLine);
++    if (bc.dy) scanSpans(ca, bc, ymin, ymax, scanLine);
++}
+ 
+-    this.on('move', this._update.bind(this, false));
+-    this.on('zoom', this._update.bind(this, true));
+-    this.on('moveend', function() {
+-        this.animationLoop.set(300); // text fading
+-        this._rerender();
+-    }.bind(this));
++TileCoord.cover = function(z, bounds, actualZ) {
++    var tiles = 1 << z;
++    var t = {};
+ 
+-    if (typeof window !== 'undefined') {
+-        window.addEventListener('resize', this._onWindowResize, false);
++    function scanLine(x0, x1, y) {
++        var x, wx, coord;
++        if (y >= 0 && y <= tiles) {
++            for (x = x0; x < x1; x++) {
++                wx = (x % tiles + tiles) % tiles;
++                coord = new TileCoord(actualZ, wx, y, Math.floor(x / tiles));
++                t[coord.id] = coord;
++            }
++        }
+     }
+ 
+-    this.interaction = new Interaction(this);
++    // Divide the screen up in two triangles and scan each of them:
++    // +---/
++    // | / |
++    // /---+
++    scanTriangle(bounds[0], bounds[1], bounds[2], 0, tiles, scanLine);
++    scanTriangle(bounds[2], bounds[3], bounds[0], 0, tiles, scanLine);
+ 
+-    if (options.interactive) {
+-        this.interaction.enable();
+-    }
++    return Object.keys(t).map(function(id) {
++        return t[id];
++    });
++};
+ 
+-    this._hash = options.hash && (new Hash()).addTo(this);
+-    // don't set position from options if set through hash
+-    if (!this._hash || !this._hash._onHashChange()) {
+-        this.jumpTo(options);
+-    }
++},{"../geo/coordinate":75,"assert":6}],102:[function(require,module,exports){
++'use strict';
+ 
+-    this.stacks = {};
+-    this._classes = [];
++var Tile = require('./tile');
++var TileCoord = require('./tile_coord');
++var Point = require('point-geometry');
++var Cache = require('../util/lru_cache');
++var Coordinate = require('../geo/coordinate');
++var util = require('../util/util');
++var EXTENT = require('../data/bucket').EXTENT;
+ 
+-    this.resize();
++module.exports = TilePyramid;
+ 
+-    if (options.classes) this.setClasses(options.classes);
+-    if (options.style) this.setStyle(options.style);
+-    if (options.attributionControl) this.addControl(new Attribution(options.attributionControl));
++/**
++ * A tile pyramid is a specialized cache and datastructure
++ * that contains tiles. It's used by sources to manage their
++ * data.
++ *
++ * @param {Object} options
++ * @param {number} options.tileSize
++ * @param {number} options.minzoom
++ * @param {number} options.maxzoom
++ * @private
++ */
++function TilePyramid(options) {
++    this.tileSize = options.tileSize;
++    this.minzoom = options.minzoom;
++    this.maxzoom = options.maxzoom;
++    this.roundZoom = options.roundZoom;
++    this.reparseOverscaled = options.reparseOverscaled;
+ 
+-    this.on('style.error', this.onError);
+-    this.on('source.error', this.onError);
+-    this.on('tile.error', this.onError);
+-    this.on('layer.error', this.onError);
+-};
++    this._load = options.load;
++    this._abort = options.abort;
++    this._unload = options.unload;
++    this._add = options.add;
++    this._remove = options.remove;
++    this._redoPlacement = options.redoPlacement;
+ 
+-util.extend(Map.prototype, Evented);
+-util.extend(Map.prototype, Camera.prototype);
+-util.extend(Map.prototype, /** @lends Map.prototype */{
++    this._tiles = {};
++    this._cache = new Cache(0, function(tile) { return this._unload(tile); }.bind(this));
+ 
+-    options: {
+-        center: [0, 0],
+-        zoom: 0,
+-        bearing: 0,
+-        pitch: 0,
++    this._filterRendered = this._filterRendered.bind(this);
++}
+ 
+-        minZoom: defaultMinZoom,
+-        maxZoom: defaultMaxZoom,
+ 
+-        interactive: true,
++TilePyramid.maxOverzooming = 10;
++TilePyramid.maxUnderzooming = 3;
+ 
+-        scrollZoom: true,
+-        boxZoom: true,
+-        dragRotate: true,
+-        dragPan: true,
+-        keyboard: true,
+-        doubleClickZoom: true,
+-        touchZoomRotate: true,
++TilePyramid.prototype = {
++    /**
++     * Confirm that every tracked tile is loaded.
++     * @returns {boolean} whether all tiles are loaded.
++     * @private
++     */
++    loaded: function() {
++        for (var t in this._tiles) {
++            if (!this._tiles[t].loaded && !this._tiles[t].errored)
++                return false;
++        }
++        return true;
++    },
+ 
+-        bearingSnap: 7,
++    /**
++     * Return all tile ids ordered with z-order, and cast to numbers
++     * @returns {Array<number>} ids
++     * @private
++     */
++    orderedIDs: function() {
++        return Object.keys(this._tiles).map(Number).sort(compareKeyZoom);
++    },
+ 
+-        hash: false,
++    renderedIDs: function() {
++        return this.orderedIDs().filter(this._filterRendered);
++    },
+ 
+-        attributionControl: true,
++    _filterRendered: function(id) {
++        return this._tiles[id].loaded && !this._coveredTiles[id];
++    },
+ 
+-        failIfMajorPerformanceCaveat: false,
+-        preserveDrawingBuffer: false
++    reload: function() {
++        this._cache.reset();
++        for (var i in this._tiles) {
++            this._load(this._tiles[i]);
++        }
+     },
+ 
+     /**
+-     * Adds a control to the map, calling `control.addTo(this)`.
+-     *
+-     * @param {Control} control
+-     * @returns {Map} `this`
++     * Get a specific tile by id
++     * @param {string|number} id tile id
++     * @returns {Object} tile
++     * @private
+      */
+-    addControl: function(control) {
+-        control.addTo(this);
+-        return this;
++    getTile: function(id) {
++        return this._tiles[id];
+     },
+ 
+     /**
+-     * Adds a style class to a map.
+-     *
+-     * @param {string} klass name of style class
+-     * @param {StyleOptions} [options]
+-     * @fires change
+-     * @returns {Map} `this`
++     * get the zoom level adjusted for the difference in map and source tilesizes
++     * @param {Object} transform
++     * @returns {number} zoom level
++     * @private
+      */
+-    addClass: function(klass, options) {
+-        if (this._classes.indexOf(klass) >= 0 || klass === '') return this;
+-        this._classes.push(klass);
+-        this._classOptions = options;
++    getZoom: function(transform) {
++        return transform.zoom + Math.log(transform.tileSize / this.tileSize) / Math.LN2;
++    },
+ 
+-        if (this.style) this.style.updateClasses();
+-        return this._update(true);
++    /**
++     * Return a zoom level that will cover all tiles in a given transform
++     * @param {Object} transform
++     * @returns {number} zoom level
++     * @private
++     */
++    coveringZoomLevel: function(transform) {
++        return (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
+     },
+ 
+     /**
+-     * Removes a style class from a map.
+-     *
+-     * @param {string} klass name of style class
+-     * @param {StyleOptions} [options]
+-     * @fires change
+-     * @returns {Map} `this`
++     * Given a transform, return all coordinates that could cover that
++     * transform for a covering zoom level.
++     * @param {Object} transform
++     * @returns {Array<Tile>} tiles
++     * @private
+      */
+-    removeClass: function(klass, options) {
+-        var i = this._classes.indexOf(klass);
+-        if (i < 0 || klass === '') return this;
+-        this._classes.splice(i, 1);
+-        this._classOptions = options;
++    coveringTiles: function(transform) {
++        var z = this.coveringZoomLevel(transform);
++        var actualZ = z;
+ 
+-        if (this.style) this.style.updateClasses();
+-        return this._update(true);
++        if (z < this.minzoom) return [];
++        if (z > this.maxzoom) z = this.maxzoom;
++
++        var tr = transform,
++            tileCenter = tr.locationCoordinate(tr.center)._zoomTo(z),
++            centerPoint = new Point(tileCenter.column - 0.5, tileCenter.row - 0.5);
++
++        return TileCoord.cover(z, [
++            tr.pointCoordinate(new Point(0, 0))._zoomTo(z),
++            tr.pointCoordinate(new Point(tr.width, 0))._zoomTo(z),
++            tr.pointCoordinate(new Point(tr.width, tr.height))._zoomTo(z),
++            tr.pointCoordinate(new Point(0, tr.height))._zoomTo(z)
++        ], this.reparseOverscaled ? actualZ : z).sort(function(a, b) {
++            return centerPoint.dist(a) - centerPoint.dist(b);
++        });
+     },
+ 
+     /**
+-     * Helper method to add more than one class.
++     * Recursively find children of the given tile (up to maxCoveringZoom) that are already loaded;
++     * adds found tiles to retain object; returns true if any child is found.
+      *
+-     * @param {Array<string>} klasses An array of class names
+-     * @param {StyleOptions} [options]
+-     * @fires change
+-     * @returns {Map} `this`
++     * @param {Coordinate} coord
++     * @param {number} maxCoveringZoom
++     * @param {boolean} retain
++     * @returns {boolean} whether the operation was complete
++     * @private
+      */
+-    setClasses: function(klasses, options) {
+-        var uniqueClasses = {};
+-        for (var i = 0; i < klasses.length; i++) {
+-            if (klasses[i] !== '') uniqueClasses[klasses[i]] = true;
+-        }
+-        this._classes = Object.keys(uniqueClasses);
+-        this._classOptions = options;
++    findLoadedChildren: function(coord, maxCoveringZoom, retain) {
++        var found = false;
+ 
+-        if (this.style) this.style.updateClasses();
+-        return this._update(true);
++        for (var id in this._tiles) {
++            var tile = this._tiles[id];
++
++            // only consider loaded tiles on higher zoom levels (up to maxCoveringZoom)
++            if (retain[id] || !tile.loaded || tile.coord.z <= coord.z || tile.coord.z > maxCoveringZoom) continue;
++
++            // disregard tiles that are not descendants of the given tile coordinate
++            var z2 = Math.pow(2, Math.min(tile.coord.z, this.maxzoom) - Math.min(coord.z, this.maxzoom));
++            if (Math.floor(tile.coord.x / z2) !== coord.x ||
++                Math.floor(tile.coord.y / z2) !== coord.y)
++                continue;
++
++            // found loaded child
++            retain[id] = true;
++            found = true;
++
++            // loop through parents; retain the topmost loaded one if found
++            while (tile && tile.coord.z - 1 > coord.z) {
++                var parentId = tile.coord.parent(this.maxzoom).id;
++                tile = this._tiles[parentId];
++
++                if (tile && tile.loaded) {
++                    delete retain[id];
++                    retain[parentId] = true;
++                }
++            }
++        }
++        return found;
+     },
+ 
+     /**
+-     * Check whether a style class is active.
++     * Find a loaded parent of the given tile (up to minCoveringZoom);
++     * adds the found tile to retain object and returns the tile if found
+      *
+-     * @param {string} klass Name of style class
+-     * @returns {boolean}
++     * @param {Coordinate} coord
++     * @param {number} minCoveringZoom
++     * @param {boolean} retain
++     * @returns {Tile} tile object
++     * @private
+      */
+-    hasClass: function(klass) {
+-        return this._classes.indexOf(klass) >= 0;
++    findLoadedParent: function(coord, minCoveringZoom, retain) {
++        for (var z = coord.z - 1; z >= minCoveringZoom; z--) {
++            coord = coord.parent(this.maxzoom);
++            var tile = this._tiles[coord.id];
++            if (tile && tile.loaded) {
++                retain[coord.id] = true;
++                return tile;
++            }
++            if (this._cache.has(coord.id)) {
++                this.addTile(coord);
++                retain[coord.id] = true;
++                return this._tiles[coord.id];
++            }
++        }
+     },
+ 
+     /**
+-     * Return an array of the current active style classes.
++     * Resizes the tile cache based on the current viewport's size.
+      *
+-     * @returns {boolean}
++     * Larger viewports use more tiles and need larger caches. Larger viewports
++     * are more likely to be found on devices with more memory and on pages where
++     * the map is more important.
++     *
++     * @private
+      */
+-    getClasses: function() {
+-        return this._classes;
++    updateCacheSize: function(transform) {
++        var widthInTiles = Math.ceil(transform.width / transform.tileSize) + 1;
++        var heightInTiles = Math.ceil(transform.height / transform.tileSize) + 1;
++        var approxTilesInView = widthInTiles * heightInTiles;
++        var commonZoomRange = 5;
++        this._cache.setMaxSize(Math.floor(approxTilesInView * commonZoomRange));
+     },
+ 
+     /**
+-     * Detect the map's new width and height and resize it. Given
+-     * the `container` of the map specified in the Map constructor,
+-     * this reads the new width from the DOM: so this method is often
+-     * called after the map's container is resized by another script
+-     * or the map is shown after being initially hidden with CSS.
+-     *
+-     * @returns {Map} `this`
++     * Removes tiles that are outside the viewport and adds new tiles that
++     * are inside the viewport.
++     * @private
+      */
+-    resize: function() {
+-        var width = 0, height = 0;
++    update: function(used, transform, fadeDuration) {
++        var i;
++        var coord;
++        var tile;
+ 
+-        if (this._container) {
+-            width = this._container.offsetWidth || 400;
+-            height = this._container.offsetHeight || 300;
++        this.updateCacheSize(transform);
++
++        // Determine the overzooming/underzooming amounts.
++        var zoom = (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
++        var minCoveringZoom = Math.max(zoom - TilePyramid.maxOverzooming, this.minzoom);
++        var maxCoveringZoom = Math.max(zoom + TilePyramid.maxUnderzooming,  this.minzoom);
++
++        // Retain is a list of tiles that we shouldn't delete, even if they are not
++        // the most ideal tile for the current viewport. This may include tiles like
++        // parent or child tiles that are *already* loaded.
++        var retain = {};
++        var now = new Date().getTime();
++
++        // Covered is a list of retained tiles who's areas are full covered by other,
++        // better, retained tiles. They are not drawn separately.
++        this._coveredTiles = {};
++
++        var required = used ? this.coveringTiles(transform) : [];
++        for (i = 0; i < required.length; i++) {
++            coord = required[i];
++            tile = this.addTile(coord);
++
++            retain[coord.id] = true;
++
++            if (tile.loaded)
++                continue;
++
++            // The tile we require is not yet loaded.
++            // Retain child or parent tiles that cover the same area.
++            if (!this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
++                this.findLoadedParent(coord, minCoveringZoom, retain);
++            }
+         }
+ 
+-        this._canvas.resize(width, height);
+-        this.transform.resize(width, height);
+-        this.painter.resize(width, height);
++        var parentsForFading = {};
+ 
+-        return this
+-            .fire('movestart')
+-            .fire('move')
+-            .fire('resize')
+-            .fire('moveend');
++        var ids = Object.keys(retain);
++        for (var k = 0; k < ids.length; k++) {
++            var id = ids[k];
++            coord = TileCoord.fromID(id);
++            tile = this._tiles[id];
++            if (tile && tile.timeAdded > now - (fadeDuration || 0)) {
++                // This tile is still fading in. Find tiles to cross-fade with it.
++                if (this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
++                    retain[id] = true;
++                }
++                this.findLoadedParent(coord, minCoveringZoom, parentsForFading);
++            }
++        }
++
++        var fadedParent;
++        for (fadedParent in parentsForFading) {
++            if (!retain[fadedParent]) {
++                // If a tile is only needed for fading, mark it as covered so that it isn't rendered on it's own.
++                this._coveredTiles[fadedParent] = true;
++            }
++        }
++        for (fadedParent in parentsForFading) {
++            retain[fadedParent] = true;
++        }
++
++        // Remove the tiles we don't need anymore.
++        var remove = util.keysDifference(this._tiles, retain);
++        for (i = 0; i < remove.length; i++) {
++            this.removeTile(+remove[i]);
++        }
++
++        this.transform = transform;
+     },
+ 
+     /**
+-     * Get the map's geographical bounds.
+-     *
+-     * @returns {LngLatBounds}
++     * Add a tile, given its coordinate, to the pyramid.
++     * @param {Coordinate} coord
++     * @returns {Coordinate} the coordinate.
++     * @private
+      */
+-    getBounds: function() {
+-        var bounds = new LngLatBounds(
+-            this.transform.pointLocation(new Point(0, 0)),
+-            this.transform.pointLocation(this.transform.size));
++    addTile: function(coord) {
++        var tile = this._tiles[coord.id];
++        if (tile)
++            return tile;
+ 
+-        if (this.transform.angle || this.transform.pitch) {
+-            bounds.extend(this.transform.pointLocation(new Point(this.transform.size.x, 0)));
+-            bounds.extend(this.transform.pointLocation(new Point(0, this.transform.size.y)));
++        var wrapped = coord.wrapped();
++        tile = this._tiles[wrapped.id];
++
++        if (!tile) {
++            tile = this._cache.get(wrapped.id);
++            if (tile && this._redoPlacement) {
++                this._redoPlacement(tile);
++            }
+         }
+ 
+-        return bounds;
++        if (!tile) {
++            var zoom = coord.z;
++            var overscaling = zoom > this.maxzoom ? Math.pow(2, zoom - this.maxzoom) : 1;
++            tile = new Tile(wrapped, this.tileSize * overscaling, this.maxzoom);
++            this._load(tile);
++        }
++
++        tile.uses++;
++        this._tiles[coord.id] = tile;
++        this._add(tile, coord);
++
++        return tile;
+     },
+ 
+     /**
+-     * Set constraint on the map's geographical bounds. Pan or zoom operations that would result in
+-     * displaying regions that fall outside of the bounds instead result in displaying the map at the
+-     * closest point and/or zoom level of the requested operation that is within the max bounds.
+-     *
+-     * @param {LngLatBounds | Array<Array<number>> | null | undefined} lnglatbounds Desired max bounds of the map. If null or undefined, function removes any bounds constraints on the map.
+-     * @returns {Map} `this`
++     * Remove a tile, given its id, from the pyramid
++     * @param {string|number} id tile id
++     * @returns {undefined} nothing
++     * @private
+      */
+-    setMaxBounds: function (lnglatbounds) {
+-        if (lnglatbounds) {
+-            var b = LngLatBounds.convert(lnglatbounds);
+-            this.transform.lngRange = [b.getWest(), b.getEast()];
+-            this.transform.latRange = [b.getSouth(), b.getNorth()];
+-            this.transform._constrain();
+-            this._update();
+-        } else if (lnglatbounds === null || lnglatbounds === undefined) {
+-            this.transform.lngRange = [];
+-            this.transform.latRange = [];
+-            this._update();
++    removeTile: function(id) {
++        var tile = this._tiles[id];
++        if (!tile)
++            return;
++
++        tile.uses--;
++        delete this._tiles[id];
++        this._remove(tile);
++
++        if (tile.uses > 0)
++            return;
++
++        if (tile.loaded) {
++            this._cache.add(tile.coord.wrapped().id, tile);
++        } else {
++            this._abort(tile);
++            this._unload(tile);
+         }
+-        return this;
++    },
+ 
++    /**
++     * Remove all tiles from this pyramid
++     * @private
++     */
++    clearTiles: function() {
++        for (var id in this._tiles)
++            this.removeTile(id);
++        this._cache.reset();
+     },
++
+     /**
+-     * Set the map's minimum zoom level, and zooms map to that level if it is
+-     * currently below it. If no parameter provided, unsets the current
+-     * minimum zoom (sets it to 0)
+-     *
+-     * @param {number} minZoom Minimum zoom level. Must be between 0 and 20.
+-     * @returns {Map} `this
++     * Search through our current tiles and attempt to find the tiles that
++     * cover the given bounds.
++     * @param {Array<Coordinate>} queryGeometry coordinates of the corners of bounding rectangle
++     * @returns {Array<Object>} result items have {tile, minX, maxX, minY, maxY}, where min/max bounding values are the given bounds transformed in into the coordinate space of this tile.
++     * @private
+      */
+-    setMinZoom: function(minZoom) {
++    tilesIn: function(queryGeometry) {
++        var tileResults = {};
++        var ids = this.orderedIDs();
+ 
+-        minZoom = minZoom === null || minZoom === undefined ? defaultMinZoom : minZoom;
++        var minX = Infinity;
++        var minY = Infinity;
++        var maxX = -Infinity;
++        var maxY = -Infinity;
++        var z = queryGeometry[0].zoom;
+ 
+-        if (minZoom >= defaultMinZoom && minZoom <= this.transform.maxZoom) {
+-            this.transform.minZoom = minZoom;
+-            this._update();
++        for (var k = 0; k < queryGeometry.length; k++) {
++            var p = queryGeometry[k];
++            minX = Math.min(minX, p.column);
++            minY = Math.min(minY, p.row);
++            maxX = Math.max(maxX, p.column);
++            maxY = Math.max(maxY, p.row);
++        }
+ 
+-            if (this.getZoom() < minZoom) this.setZoom(minZoom);
++        for (var i = 0; i < ids.length; i++) {
++            var tile = this._tiles[ids[i]];
++            var coord = TileCoord.fromID(ids[i]);
+ 
+-            return this;
++            var tileSpaceBounds = [
++                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(minX, minY, z)),
++                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(maxX, maxY, z))
++            ];
+ 
+-        } else throw new Error('minZoom must be between ' + defaultMinZoom + ' and the current maxZoom, inclusive');
+-    },
++            if (tileSpaceBounds[0].x < EXTENT && tileSpaceBounds[0].y < EXTENT &&
++                tileSpaceBounds[1].x >= 0 && tileSpaceBounds[1].y >= 0) {
+ 
+-    /**
+-     * Set the map's maximum zoom level, and zooms map to that level if it is
+-     * currently above it. If no parameter provided, unsets the current
+-     * maximum zoom (sets it to 20)
+-     * @param {number} maxZoom Maximum zoom level. Must be between 0 and 20.
+-     * @returns {Map} `this`
+-     */
+-    setMaxZoom: function(maxZoom) {
++                var tileSpaceQueryGeometry = [];
++                for (var j = 0; j < queryGeometry.length; j++) {
++                    tileSpaceQueryGeometry.push(coordinateToTilePoint(coord, tile.sourceMaxZoom, queryGeometry[j]));
++                }
+ 
+-        maxZoom = maxZoom === null || maxZoom === undefined ? defaultMaxZoom : maxZoom;
++                var tileResult = tileResults[tile.coord.id];
++                if (tileResult === undefined) {
++                    tileResult = tileResults[tile.coord.id] = {
++                        tile: tile,
++                        queryGeometry: [],
++                        scale: Math.pow(2, this.transform.zoom - tile.coord.z)
++                    };
++                }
+ 
+-        if (maxZoom >= this.transform.minZoom && maxZoom <= defaultMaxZoom) {
+-            this.transform.maxZoom = maxZoom;
+-            this._update();
++                // Wrapped tiles share one tileResult object but can have multiple queryGeometry parts
++                tileResult.queryGeometry.push(tileSpaceQueryGeometry);
++            }
++        }
++
++        var results = [];
++        for (var t in tileResults) {
++            results.push(tileResults[t]);
++        }
++        return results;
++    }
++};
++
++/**
++ * Convert a coordinate to a point in a tile's coordinate space.
++ * @param {Coordinate} tileCoord
++ * @param {Coordinate} coord
++ * @returns {Object} position
++ * @private
++ */
++function coordinateToTilePoint(tileCoord, sourceMaxZoom, coord) {
++    var zoomedCoord = coord.zoomTo(Math.min(tileCoord.z, sourceMaxZoom));
++    return {
++        x: (zoomedCoord.column - (tileCoord.x + tileCoord.w * Math.pow(2, tileCoord.z))) * EXTENT,
++        y: (zoomedCoord.row - tileCoord.y) * EXTENT
++    };
++
++}
++
++function compareKeyZoom(a, b) {
++    return (a % 32) - (b % 32);
++}
++
++},{"../data/bucket":67,"../geo/coordinate":75,"../util/lru_cache":165,"../util/util":169,"./tile":100,"./tile_coord":101,"point-geometry":174}],103:[function(require,module,exports){
++'use strict';
++
++var util = require('../util/util');
++var Evented = require('../util/evented');
++var Source = require('./source');
++var normalizeURL = require('../util/mapbox').normalizeTileURL;
++
++module.exports = VectorTileSource;
++
++function VectorTileSource(options) {
++    util.extend(this, util.pick(options, ['url', 'tileSize']));
++    this._options = util.extend({ type: 'vector' }, options);
++
++    if (this.tileSize !== 512) {
++        throw new Error('vector tile sources must have a tileSize of 512');
++    }
+ 
+-            if (this.getZoom() > maxZoom) this.setZoom(maxZoom);
++    Source._loadTileJSON.call(this, options);
++}
+ 
+-            return this;
++VectorTileSource.prototype = util.inherit(Evented, {
++    minzoom: 0,
++    maxzoom: 22,
++    tileSize: 512,
++    reparseOverscaled: true,
++    _loaded: false,
++    isTileClipped: true,
+ 
+-        } else throw new Error('maxZoom must be between the current minZoom and ' + defaultMaxZoom + ', inclusive');
+-    },
+-    /**
+-     * Get pixel coordinates relative to the map container, given a geographical
+-     * location.
+-     *
+-     * @param {LngLat} lnglat
+-     * @returns {Object} `x` and `y` coordinates
+-     */
+-    project: function(lnglat) {
+-        return this.transform.locationPoint(LngLat.convert(lnglat));
++    onAdd: function(map) {
++        this.map = map;
+     },
+ 
+-    /**
+-     * Get geographical coordinates, given pixel coordinates.
+-     *
+-     * @param {Array<number>} point [x, y] pixel coordinates
+-     * @returns {LngLat}
+-     */
+-    unproject: function(point) {
+-        return this.transform.pointLocation(Point.convert(point));
++    loaded: function() {
++        return this._pyramid && this._pyramid.loaded();
+     },
+ 
+-    /**
+-     * Query rendered features within a point or rectangle.
+-     *
+-     * @param {Point|Array<number>|Array<Point>|Array<Array<number>>} [pointOrBox] Either [x, y] pixel coordinates of a point, or [[x1, y1], [x2, y2]] pixel coordinates of opposite corners of bounding rectangle. Optional: use entire viewport if omitted.
+-     * @param {Object} params
+-     * @param {Array<string>} [params.layers] Only query features from layers with these layer IDs.
+-     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
+-     *
+-     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features
+-     * matching the query parameters. The GeoJSON properties of each feature are taken from
+-     * the original source. Each feature object also contains a top-level `layer`
+-     * property whose value is an object representing the style layer to which the
+-     * feature belongs. Layout and paint properties in this object contain values
+-     * which are fully evaluated for the given zoom level and feature.
+-     *
+-     * @example
+-     * var features = map.queryRenderedFeatures([20, 35], { layers: ['my-layer-name'] });
+-     *
+-     * @example
+-     * var features = map.queryRenderedFeatures([[10, 20], [30, 50]], { layers: ['my-layer-name'] });
+-     */
+-    queryRenderedFeatures: function(pointOrBox, params) {
+-        if (!(pointOrBox instanceof Point || Array.isArray(pointOrBox))) {
+-            params = pointOrBox;
+-            pointOrBox = undefined;
++    update: function(transform) {
++        if (this._pyramid) {
++            this._pyramid.update(this.used, transform);
+         }
+-        var queryGeometry = this._makeQueryGeometry(pointOrBox);
+-        return this.style.queryRenderedFeatures(queryGeometry, params, this.transform.zoom, this.transform.angle);
+     },
+ 
+-    _makeQueryGeometry: function(pointOrBox) {
+-        if (pointOrBox === undefined) {
+-            // bounds was omitted: use full viewport
+-            pointOrBox = [
+-                Point.convert([0, 0]),
+-                Point.convert([this.transform.width, this.transform.height])
+-            ];
++    reload: function() {
++        if (this._pyramid) {
++            this._pyramid.reload();
+         }
++    },
+ 
+-        var queryGeometry;
+-        var isPoint = pointOrBox instanceof Point || typeof pointOrBox[0] === 'number';
++    serialize: function() {
++        return util.extend({}, this._options);
++    },
+ 
+-        if (isPoint) {
+-            var point = Point.convert(pointOrBox);
+-            queryGeometry = [point];
+-        } else {
+-            var box = [Point.convert(pointOrBox[0]), Point.convert(pointOrBox[1])];
+-            queryGeometry = [
+-                box[0],
+-                new Point(box[1].x, box[0].y),
+-                box[1],
+-                new Point(box[0].x, box[1].y),
+-                box[0]
+-            ];
+-        }
++    getVisibleCoordinates: Source._getVisibleCoordinates,
++    getTile: Source._getTile,
+ 
+-        queryGeometry = queryGeometry.map(function(p) {
+-            return this.transform.pointCoordinate(p);
+-        }.bind(this));
++    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
++    querySourceFeatures: Source._querySourceFeatures,
+ 
+-        return queryGeometry;
+-    },
++    _loadTile: function(tile) {
++        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
++        var params = {
++            url: normalizeURL(tile.coord.url(this.tiles, this.maxzoom), this.url),
++            uid: tile.uid,
++            coord: tile.coord,
++            zoom: tile.coord.z,
++            tileSize: this.tileSize * overscaling,
++            source: this.id,
++            overscaling: overscaling,
++            angle: this.map.transform.angle,
++            pitch: this.map.transform.pitch,
++            showCollisionBoxes: this.map.showCollisionBoxes
++        };
+ 
+-    /**
+-     * Get data from vector tiles as an array of GeoJSON Features.
+-     *
+-     * @param {string} sourceID source ID
+-     * @param {Object} params
+-     * @param {string} [params.sourceLayer] The name of the vector tile layer to get features from.
+-     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
+-     *
+-     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features matching the query parameters. The GeoJSON properties of each feature are taken from the original source. Each feature object also contains a top-level `layer` property whose value is an object representing the style layer to which the feature belongs. Layout and paint properties in this object contain values which are fully evaluated for the given zoom level and feature.
+-     */
+-    querySourceFeatures: function(sourceID, params) {
+-        return this.style.querySourceFeatures(sourceID, params);
++        if (tile.workerID) {
++            params.rawTileData = tile.rawTileData;
++            this.dispatcher.send('reload tile', params, this._tileLoaded.bind(this, tile), tile.workerID);
++        } else {
++            tile.workerID = this.dispatcher.send('load tile', params, this._tileLoaded.bind(this, tile));
++        }
+     },
+ 
+-    /**
+-     * Replaces the map's style object with a new value. Unlike the `style`
+-     * option in the Map constructor, this method only accepts an object
+-     * of a new style, not a URL string.
+-     *
+-     * @param {Object} style A style object formatted as JSON
+-     * @returns {Map} `this`
+-     */
+-    setStyle: function(style) {
+-        if (this.style) {
+-            this.style
+-                .off('load', this._onStyleLoad)
+-                .off('error', this._forwardStyleEvent)
+-                .off('change', this._onStyleChange)
+-                .off('source.add', this._onSourceAdd)
+-                .off('source.remove', this._onSourceRemove)
+-                .off('source.load', this._onSourceUpdate)
+-                .off('source.error', this._forwardSourceEvent)
+-                .off('source.change', this._onSourceUpdate)
+-                .off('layer.add', this._forwardLayerEvent)
+-                .off('layer.remove', this._forwardLayerEvent)
+-                .off('layer.error', this._forwardLayerEvent)
+-                .off('tile.add', this._forwardTileEvent)
+-                .off('tile.remove', this._forwardTileEvent)
+-                .off('tile.load', this._update)
+-                .off('tile.error', this._forwardTileEvent)
+-                .off('tile.stats', this._forwardTileEvent)
+-                ._remove();
+-
+-            this.off('rotate', this.style._redoPlacement);
+-            this.off('pitch', this.style._redoPlacement);
+-        }
++    _tileLoaded: function(tile, err, data) {
++        if (tile.aborted)
++            return;
+ 
+-        if (!style) {
+-            this.style = null;
+-            return this;
+-        } else if (style instanceof Style) {
+-            this.style = style;
+-        } else {
+-            this.style = new Style(style, this.animationLoop);
++        if (err) {
++            tile.errored = true;
++            this.fire('tile.error', {tile: tile, error: err});
++            return;
+         }
+ 
+-        this.style
+-            .on('load', this._onStyleLoad)
+-            .on('error', this._forwardStyleEvent)
+-            .on('change', this._onStyleChange)
+-            .on('source.add', this._onSourceAdd)
+-            .on('source.remove', this._onSourceRemove)
+-            .on('source.load', this._onSourceUpdate)
+-            .on('source.error', this._forwardSourceEvent)
+-            .on('source.change', this._onSourceUpdate)
+-            .on('layer.add', this._forwardLayerEvent)
+-            .on('layer.remove', this._forwardLayerEvent)
+-            .on('layer.error', this._forwardLayerEvent)
+-            .on('tile.add', this._forwardTileEvent)
+-            .on('tile.remove', this._forwardTileEvent)
+-            .on('tile.load', this._update)
+-            .on('tile.error', this._forwardTileEvent)
+-            .on('tile.stats', this._forwardTileEvent);
++        tile.loadVectorData(data, this.map.style);
+ 
+-        this.on('rotate', this.style._redoPlacement);
+-        this.on('pitch', this.style._redoPlacement);
++        if (tile.redoWhenDone) {
++            tile.redoWhenDone = false;
++            tile.redoPlacement(this);
++        }
+ 
+-        return this;
++        this.fire('tile.load', {tile: tile});
++        this.fire('tile.stats', data.bucketStats);
+     },
+ 
+-    /**
+-     * Get a style object that can be used to recreate the map's style.
+-     *
+-     * @returns {Object} style
+-     */
+-    getStyle: function() {
+-        return this.style.serialize();
++    _abortTile: function(tile) {
++        tile.aborted = true;
++        this.dispatcher.send('abort tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
+     },
+ 
+-    /**
+-     * Add a source to the map style.
+-     *
+-     * @param {string} id ID of the source. Must not be used by any existing source.
+-     * @param {Object} source source specification, following the
+-     * [Mapbox GL Style Reference](https://www.mapbox.com/mapbox-gl-style-spec/#sources)
+-     * @fires source.add
+-     * @returns {Map} `this`
+-     */
+-    addSource: function(id, source) {
+-        this.style.addSource(id, source);
+-        this._update(true);
+-        return this;
++    _addTile: function(tile) {
++        this.fire('tile.add', {tile: tile});
+     },
+ 
+-    /**
+-     * Remove an existing source from the map style.
+-     *
+-     * @param {string} id ID of the source to remove
+-     * @fires source.remove
+-     * @returns {Map} `this`
+-     */
+-    removeSource: function(id) {
+-        this.style.removeSource(id);
+-        this._update(true);
+-        return this;
++    _removeTile: function(tile) {
++        this.fire('tile.remove', {tile: tile});
+     },
+ 
+-    /**
+-     * Return the style source object with the given `id`.
+-     *
+-     * @param {string} id source ID
+-     * @returns {Object}
+-     */
+-    getSource: function(id) {
+-        return this.style.getSource(id);
++    _unloadTile: function(tile) {
++        tile.unloadVectorData(this.map.painter);
++        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
+     },
+ 
+-    /**
+-     * Add a layer to the map style. The layer will be inserted before the layer with
+-     * ID `before`, or appended if `before` is omitted.
+-     * @param {StyleLayer|Object} layer
+-     * @param {string=} before  ID of an existing layer to insert before
+-     * @fires layer.add
+-     * @returns {Map} `this`
+-     */
+-    addLayer: function(layer, before) {
+-        this.style.addLayer(layer, before);
+-        this._update(true);
+-        return this;
+-    },
++    redoPlacement: Source.redoPlacement,
+ 
+-    /**
+-     * Remove the layer with the given `id` from the map. Any layers which refer to the
+-     * specified layer via a `ref` property are also removed.
+-     *
+-     * @param {string} id layer id
+-     * @throws {Error} if no layer with the given `id` exists
+-     * @fires layer.remove
+-     * @returns {Map} `this`
+-     */
+-    removeLayer: function(id) {
+-        this.style.removeLayer(id);
+-        this._update(true);
+-        return this;
+-    },
++    _redoTilePlacement: function(tile) {
++        tile.redoPlacement(this);
++    }
++});
+ 
+-    /**
+-     * Return the style layer object with the given `id`.
+-     *
+-     * @param {string} id layer id
+-     * @returns {?Object} a layer, if one with the given `id` exists
+-     */
+-    getLayer: function(id) {
+-        return this.style.getLayer(id);
+-    },
++},{"../util/evented":161,"../util/mapbox":166,"../util/util":169,"./source":99}],104:[function(require,module,exports){
++'use strict';
+ 
+-    /**
+-     * Set the filter for a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {Array} filter filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#types-filter)
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setFilter('my-layer', ['==', 'name', 'USA']);
+-     */
+-    setFilter: function(layer, filter) {
+-        this.style.setFilter(layer, filter);
+-        this._update(true);
+-        return this;
+-    },
++var util = require('../util/util');
++var Tile = require('./tile');
++var TileCoord = require('./tile_coord');
++var LngLat = require('../geo/lng_lat');
++var Point = require('point-geometry');
++var Evented = require('../util/evented');
++var ajax = require('../util/ajax');
++var EXTENT = require('../data/bucket').EXTENT;
++var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('../render/vertex_array_object');
+ 
+-    /**
+-     * Set the zoom extent for a given style layer.
+-     *
+-     * @param {string} layerId ID of a layer
+-     * @param {number} minzoom minimum zoom extent
+-     * @param {number} maxzoom maximum zoom extent
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setLayerZoomRange('my-layer', 2, 5);
+-     */
+-    setLayerZoomRange: function(layerId, minzoom, maxzoom) {
+-        this.style.setLayerZoomRange(layerId, minzoom, maxzoom);
+-        this._update(true);
+-        return this;
+-    },
++module.exports = VideoSource;
+ 
+-    /**
+-     * Get the filter for a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @returns {Array} filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#filter)
+-     */
+-    getFilter: function(layer) {
+-        return this.style.getFilter(layer);
+-    },
++/**
++ * Create a Video data source instance given an options object
++ * @class VideoSource
++ * @param {Object} [options]
++ * @param {Array<string>} options.urls An array of URLs to video files
++ * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
++ * @example
++ * var sourceObj = new mapboxgl.VideoSource({
++ *    url: [
++ *        'https://www.mapbox.com/videos/baltimore-smoke.mp4',
++ *        'https://www.mapbox.com/videos/baltimore-smoke.webm'
++ *    ],
++ *    coordinates: [
++ *        [-76.54335737228394, 39.18579907229748],
++ *        [-76.52803659439087, 39.1838364847587],
++ *        [-76.5295386314392, 39.17683392507606],
++ *        [-76.54520273208618, 39.17876344106642]
++ *    ]
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
++ */
++function VideoSource(options) {
++    this.urls = options.urls;
++    this.coordinates = options.coordinates;
+ 
+-    /**
+-     * Set the value of a paint property in a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a paint property
+-     * @param {*} value value for the paint propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
+-     * @param {string=} klass optional class specifier for the property
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setPaintProperty('my-layer', 'fill-color', '#faafee');
+-     */
+-    setPaintProperty: function(layer, name, value, klass) {
+-        this.style.setPaintProperty(layer, name, value, klass);
+-        this._update(true);
+-        return this;
+-    },
++    ajax.getVideo(options.urls, function(err, video) {
++        // @TODO handle errors via event.
++        if (err) return;
+ 
+-    /**
+-     * Get the value of a paint property in a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a paint property
+-     * @param {string=} klass optional class specifier for the property
+-     * @returns {*} value for the paint propery
+-     */
+-    getPaintProperty: function(layer, name, klass) {
+-        return this.style.getPaintProperty(layer, name, klass);
+-    },
++        this.video = video;
++        this.video.loop = true;
+ 
+-    /**
+-     * Set the value of a layout property in a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a layout property
+-     * @param {*} value value for the layout propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setLayoutProperty('my-layer', 'visibility', 'none');
+-     */
+-    setLayoutProperty: function(layer, name, value) {
+-        this.style.setLayoutProperty(layer, name, value);
+-        this._update(true);
+-        return this;
+-    },
++        var loopID;
++
++        // start repainting when video starts playing
++        this.video.addEventListener('playing', function() {
++            loopID = this.map.style.animationLoop.set(Infinity);
++            this.map._rerender();
++        }.bind(this));
++
++        // stop repainting when video stops
++        this.video.addEventListener('pause', function() {
++            this.map.style.animationLoop.cancel(loopID);
++        }.bind(this));
++
++        this._loaded = true;
++
++        if (this.map) {
++            this.video.play();
++            this.setCoordinates(options.coordinates);
++        }
++    }.bind(this));
++}
++
++VideoSource.prototype = util.inherit(Evented, /** @lends VideoSource.prototype */{
++    roundZoom: true,
+ 
+     /**
+-     * Get the value of a layout property in a given style layer.
++     * Return the HTML video element.
+      *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a layout property
+-     * @param {string=} klass optional class specifier for the property
+-     * @returns {*} value for the layout propery
++     * @returns {Object}
+      */
+-    getLayoutProperty: function(layer, name) {
+-        return this.style.getLayoutProperty(layer, name);
++    getVideo: function() {
++        return this.video;
+     },
+ 
+-    /**
+-     * Get the Map's container as an HTML element
+-     * @returns {HTMLElement} container
+-     */
+-    getContainer: function() {
+-        return this._container;
++    onAdd: function(map) {
++        this.map = map;
++        if (this.video) {
++            this.video.play();
++            this.setCoordinates(this.coordinates);
++        }
+     },
+ 
+     /**
+-     * Get the container for the map `canvas` element.
+-     *
+-     * If you want to add non-GL overlays to the map, you should append them to this element. This
+-     * is the element to which event bindings for map interactivity such as panning and zooming are
+-     * attached. It will receive bubbled events for child elements such as the `canvas`, but not for
+-     * map controls.
++     * Update video coordinates and rerender map
+      *
+-     * @returns {HTMLElement} container
++     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
++     * @returns {VideoSource} this
+      */
+-    getCanvasContainer: function() {
+-        return this._canvasContainer;
+-    },
++    setCoordinates: function(coordinates) {
++        this.coordinates = coordinates;
++
++        // Calculate which mercator tile is suitable for rendering the video in
++        // and create a buffer with the corner coordinates. These coordinates
++        // may be outside the tile, because raster tiles aren't clipped when rendering.
++
++        var map = this.map;
++        var cornerZ0Coords = coordinates.map(function(coord) {
++            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
++        });
++
++        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
++        centerCoord.column = Math.round(centerCoord.column);
++        centerCoord.row = Math.round(centerCoord.row);
++
++
++        var tileCoords = cornerZ0Coords.map(function(coord) {
++            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
++            return new Point(
++                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
++                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
++        });
++
++        var maxInt16 = 32767;
++        var array = new RasterBoundsArray();
++        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
++        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
++        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
++        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
++
++        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
++        this.tile.buckets = {};
+ 
+-    /**
+-     * Get the Map's canvas as an HTML canvas
+-     * @returns {HTMLElement} canvas
+-     */
+-    getCanvas: function() {
+-        return this._canvas.getElement();
++        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
++        this.tile.boundsVAO = new VertexArrayObject();
++
++        this.fire('change');
++
++        return this;
+     },
+ 
+-    _setupContainer: function() {
+-        var container = this._container;
+-        container.classList.add('mapboxgl-map');
++    loaded: function() {
++        return this.video && this.video.readyState >= 2;
++    },
+ 
+-        var canvasContainer = this._canvasContainer = DOM.create('div', 'mapboxgl-canvas-container', container);
+-        if (this._interactive) {
+-            canvasContainer.classList.add('mapboxgl-interactive');
+-        }
+-        this._canvas = new Canvas(this, canvasContainer);
++    update: function() {
++        // noop
++    },
+ 
+-        var controlContainer = this._controlContainer = DOM.create('div', 'mapboxgl-control-container', container);
+-        var corners = this._controlCorners = {};
+-        ['top-left', 'top-right', 'bottom-left', 'bottom-right'].forEach(function (pos) {
+-            corners[pos] = DOM.create('div', 'mapboxgl-ctrl-' + pos, controlContainer);
+-        });
++    reload: function() {
++        // noop
+     },
+ 
+-    _setupPainter: function() {
+-        var gl = this._canvas.getWebGLContext({
+-            failIfMajorPerformanceCaveat: this._failIfMajorPerformanceCaveat,
+-            preserveDrawingBuffer: this._preserveDrawingBuffer
+-        });
++    prepare: function() {
++        if (!this._loaded) return;
++        if (this.video.readyState < 2) return; // not enough data for current position
+ 
+-        if (!gl) {
+-            console.error('Failed to initialize WebGL');
+-            return;
++        var gl = this.map.painter.gl;
++        if (!this.tile.texture) {
++            this.tile.texture = gl.createTexture();
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
++        } else {
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
+         }
+ 
+-        this.painter = new Painter(gl, this.transform);
++        this._currentTime = this.video.currentTime;
+     },
+ 
+-    /**
+-     * WebGL Context Lost event.
+-     *
+-     * @event webglcontextlost
+-     * @memberof Map
+-     * @instance
+-     * @type {Object}
+-     * @property {Event} originalEvent the original DOM event
+-     */
+-    _contextLost: function(event) {
+-        event.preventDefault();
+-        if (this._frameId) {
+-            browser.cancelFrame(this._frameId);
+-        }
+-        this.fire("webglcontextlost", {originalEvent: event});
++    getVisibleCoordinates: function() {
++        if (this.tile) return [this.tile.coord];
++        else return [];
+     },
+ 
+-    /**
+-     * WebGL Context Restored event.
+-     *
+-     * @event webglcontextrestored
+-     * @memberof Map
+-     * @instance
+-     * @type {Object}
+-     */
+-    _contextRestored: function(event) {
+-        this._setupPainter();
+-        this.resize();
+-        this._update();
+-        this.fire("webglcontextrestored", {originalEvent: event});
++    getTile: function() {
++        return this.tile;
+     },
+ 
+-    /**
+-     * Is this map fully loaded? If the style isn't loaded
+-     * or it has a change to the sources or style that isn't
+-     * propagated to its style, return false.
+-     *
+-     * @returns {boolean} whether the map is loaded
+-     */
+-    loaded: function() {
+-        if (this._styleDirty || this._sourcesDirty)
+-            return false;
+-        if (!this.style || !this.style.loaded())
+-            return false;
+-        return true;
+-    },
++    serialize: function() {
++        return {
++            type: 'video',
++            urls: this.urls,
++            coordinates: this.coordinates
++        };
++    }
++});
+ 
+-    /**
+-     * Update this map's style and sources, and re-render the map.
+-     *
+-     * @param {boolean} updateStyle mark the map's style for reprocessing as
+-     * well as its sources
+-     * @returns {Map} this
+-     * @private
+-     */
+-    _update: function(updateStyle) {
+-        if (!this.style) return this;
++},{"../data/bucket":67,"../data/buffer":72,"../geo/lng_lat":76,"../render/draw_raster":87,"../render/vertex_array_object":93,"../util/ajax":154,"../util/evented":161,"../util/util":169,"./tile":100,"./tile_coord":101,"point-geometry":174}],105:[function(require,module,exports){
++'use strict';
+ 
+-        this._styleDirty = this._styleDirty || updateStyle;
+-        this._sourcesDirty = true;
++var Actor = require('../util/actor');
++var WorkerTile = require('./worker_tile');
++var StyleLayer = require('../style/style_layer');
++var util = require('../util/util');
++var ajax = require('../util/ajax');
++var vt = require('vector-tile');
++var Protobuf = require('pbf');
++var supercluster = require('supercluster');
+ 
+-        this._rerender();
++var geojsonvt = require('geojson-vt');
++var rewind = require('geojson-rewind');
++var GeoJSONWrapper = require('./geojson_wrapper');
++var vtpbf = require('vt-pbf');
+ 
+-        return this;
+-    },
++module.exports = function(self) {
++    return new Worker(self);
++};
+ 
+-    /**
+-     * Call when a (re-)render of the map is required, e.g. when the
+-     * user panned or zoomed,f or new data is available.
+-     * @returns {Map} this
+-     * @private
+-     */
+-    _render: function() {
+-        if (this.style && this._styleDirty) {
+-            this._styleDirty = false;
+-            this.style.update(this._classes, this._classOptions);
+-            this._classOptions = null;
+-            this.style._recalculate(this.transform.zoom);
++function Worker(self) {
++    this.self = self;
++    this.actor = new Actor(self, this);
++    this.loading = {};
++
++    this.loaded = {};
++    this.geoJSONIndexes = {};
++}
++
++util.extend(Worker.prototype, {
++    'set layers': function(layers) {
++        this.layers = {};
++        var that = this;
++
++        // Filter layers and create an id -> layer map
++        var childLayerIndicies = [];
++        for (var i = 0; i < layers.length; i++) {
++            var layer = layers[i];
++            if (layer.type === 'fill' || layer.type === 'line' || layer.type === 'circle' || layer.type === 'symbol') {
++                if (layer.ref) {
++                    childLayerIndicies.push(i);
++                } else {
++                    setLayer(layer);
++                }
++            }
+         }
+ 
+-        if (this.style && this._sourcesDirty) {
+-            this._sourcesDirty = false;
+-            this.style._updateSources(this.transform);
++        // Create an instance of StyleLayer per layer
++        for (var j = 0; j < childLayerIndicies.length; j++) {
++            setLayer(layers[childLayerIndicies[j]]);
+         }
+ 
+-        this.painter.render(this.style, {
+-            debug: this.showTileBoundaries,
+-            showOverdrawInspector: this._showOverdrawInspector,
+-            vertices: this.vertices,
+-            rotating: this.rotating,
+-            zooming: this.zooming
+-        });
++        function setLayer(serializedLayer) {
++            var styleLayer = StyleLayer.create(
++                serializedLayer,
++                serializedLayer.ref && that.layers[serializedLayer.ref]
++            );
++            styleLayer.updatePaintTransitions({}, {transition: false});
++            that.layers[styleLayer.id] = styleLayer;
++        }
+ 
+-        this.fire('render');
++        this.layerFamilies = createLayerFamilies(this.layers);
++    },
+ 
+-        if (this.loaded() && !this._loaded) {
+-            this._loaded = true;
+-            this.fire('load');
+-        }
++    'update layers': function(layers) {
++        var that = this;
++        var id;
++        var layer;
+ 
+-        this._frameId = null;
++        // Update ref parents
++        for (id in layers) {
++            layer = layers[id];
++            if (layer.ref) updateLayer(layer);
++        }
+ 
+-        if (!this.animationLoop.stopped()) {
+-            this._styleDirty = true;
++        // Update ref children
++        for (id in layers) {
++            layer = layers[id];
++            if (!layer.ref) updateLayer(layer);
+         }
+ 
+-        if (this._sourcesDirty || this._repaint || !this.animationLoop.stopped()) {
+-            this._rerender();
++        function updateLayer(layer) {
++            var refLayer = that.layers[layer.ref];
++            if (that.layers[layer.id]) {
++                that.layers[layer.id].set(layer, refLayer);
++            } else {
++                that.layers[layer.id] = StyleLayer.create(layer, refLayer);
++            }
++            that.layers[layer.id].updatePaintTransitions({}, {transition: false});
+         }
+ 
+-        return this;
++        this.layerFamilies = createLayerFamilies(this.layers);
+     },
+ 
+-    /**
+-     * Destroys the map's underlying resources, including web workers and DOM elements. Afterwards,
+-     * you must not call any further methods on this Map instance.
+-     *
+-     * @returns {undefined}
+-     */
+-    remove: function() {
+-        if (this._hash) this._hash.remove();
+-        browser.cancelFrame(this._frameId);
+-        this.setStyle(null);
+-        if (typeof window !== 'undefined') {
+-            window.removeEventListener('resize', this._onWindowResize, false);
++    'load tile': function(params, callback) {
++        var source = params.source,
++            uid = params.uid;
++
++        if (!this.loading[source])
++            this.loading[source] = {};
++
++
++        var tile = this.loading[source][uid] = new WorkerTile(params);
++
++        tile.xhr = ajax.getArrayBuffer(params.url, done.bind(this));
++
++        function done(err, data) {
++            delete this.loading[source][uid];
++
++            if (err) return callback(err);
++
++            tile.data = new vt.VectorTile(new Protobuf(new Uint8Array(data)));
++            tile.parse(tile.data, this.layerFamilies, this.actor, data, callback);
++
++            this.loaded[source] = this.loaded[source] || {};
++            this.loaded[source][uid] = tile;
+         }
+-        removeNode(this._canvasContainer);
+-        removeNode(this._controlContainer);
+-        this._container.classList.remove('mapboxgl-map');
+     },
+ 
+-    /**
+-     * A default error handler for `style.error`, `source.error`, `layer.error`,
+-     * and `tile.error` events.
+-     * It logs the error via `console.error`.
+-     *
+-     * @example
+-     * // Disable the default error handler
+-     * map.off('style.error', map.onError);
+-     * map.off('source.error', map.onError);
+-     * map.off('tile.error', map.onError);
+-     * map.off('layer.error', map.onError);
+-     */
+-    onError: function(e) {
+-        console.error(e.error);
++    'reload tile': function(params, callback) {
++        var loaded = this.loaded[params.source],
++            uid = params.uid;
++        if (loaded && loaded[uid]) {
++            var tile = loaded[uid];
++            tile.parse(tile.data, this.layerFamilies, this.actor, params.rawTileData, callback);
++        }
+     },
+ 
+-    _rerender: function() {
+-        if (this.style && !this._frameId) {
+-            this._frameId = browser.frame(this._render);
++    'abort tile': function(params) {
++        var loading = this.loading[params.source],
++            uid = params.uid;
++        if (loading && loading[uid]) {
++            loading[uid].xhr.abort();
++            delete loading[uid];
+         }
+     },
+ 
+-    _forwardStyleEvent: function(e) {
+-        this.fire('style.' + e.type, util.extend({style: e.target}, e));
++    'remove tile': function(params) {
++        var loaded = this.loaded[params.source],
++            uid = params.uid;
++        if (loaded && loaded[uid]) {
++            delete loaded[uid];
++        }
+     },
+ 
+-    _forwardSourceEvent: function(e) {
+-        this.fire(e.type, util.extend({style: e.target}, e));
+-    },
++    'redo placement': function(params, callback) {
++        var loaded = this.loaded[params.source],
++            loading = this.loading[params.source],
++            uid = params.uid;
+ 
+-    _forwardLayerEvent: function(e) {
+-        this.fire(e.type, util.extend({style: e.target}, e));
+-    },
++        if (loaded && loaded[uid]) {
++            var tile = loaded[uid];
++            var result = tile.redoPlacement(params.angle, params.pitch, params.showCollisionBoxes);
+ 
+-    _forwardTileEvent: function(e) {
+-        this.fire(e.type, util.extend({style: e.target}, e));
+-    },
++            if (result.result) {
++                callback(null, result.result, result.transferables);
++            }
+ 
+-    _onStyleLoad: function(e) {
+-        if (this.transform.unmodified) {
+-            this.jumpTo(this.style.stylesheet);
++        } else if (loading && loading[uid]) {
++            loading[uid].angle = params.angle;
+         }
+-        this.style.update(this._classes, {transition: false});
+-        this._forwardStyleEvent(e);
+     },
+ 
+-    _onStyleChange: function(e) {
+-        this._update(true);
+-        this._forwardStyleEvent(e);
+-    },
++    'parse geojson': function(params, callback) {
++        var indexData = function(err, data) {
++            rewind(data, true);
++            if (err) return callback(err);
++            if (typeof data != 'object') {
++                return callback(new Error("Input data is not a valid GeoJSON object."));
++            }
++            try {
++                this.geoJSONIndexes[params.source] = params.cluster ?
++                    supercluster(params.superclusterOptions).load(data.features) :
++                    geojsonvt(data, params.geojsonVtOptions);
++            } catch (err) {
++                return callback(err);
++            }
++            callback(null);
++        }.bind(this);
+ 
+-    _onSourceAdd: function(e) {
+-        var source = e.source;
+-        if (source.onAdd)
+-            source.onAdd(this);
+-        this._forwardSourceEvent(e);
++        // Not, because of same origin issues, urls must either include an
++        // explicit origin or absolute path.
++        // ie: /foo/bar.json or http://example.com/bar.json
++        // but not ../foo/bar.json
++        if (params.url) {
++            ajax.getJSON(params.url, indexData);
++        } else if (typeof params.data === 'string') {
++            indexData(null, JSON.parse(params.data));
++        } else {
++            return callback(new Error("Input data is not a valid GeoJSON object."));
++        }
+     },
+ 
+-    _onSourceRemove: function(e) {
+-        var source = e.source;
+-        if (source.onRemove)
+-            source.onRemove(this);
+-        this._forwardSourceEvent(e);
+-    },
++    'load geojson tile': function(params, callback) {
++        var source = params.source,
++            coord = params.coord;
+ 
+-    _onSourceUpdate: function(e) {
+-        this._update();
+-        this._forwardSourceEvent(e);
+-    },
++        if (!this.geoJSONIndexes[source]) return callback(null, null); // we couldn't load the file
+ 
+-    _onWindowResize: function() {
+-        this.stop().resize()._update();
++        // console.time('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
++
++        var geoJSONTile = this.geoJSONIndexes[source].getTile(Math.min(coord.z, params.maxZoom), coord.x, coord.y);
++
++        // console.timeEnd('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
++
++        // if (!geoJSONTile) console.log('not found', this.geoJSONIndexes[source], coord);
++
++        var tile = geoJSONTile ? new WorkerTile(params) : undefined;
++
++        this.loaded[source] = this.loaded[source] || {};
++        this.loaded[source][params.uid] = tile;
++
++        if (geoJSONTile) {
++            var geojsonWrapper = new GeoJSONWrapper(geoJSONTile.features);
++            geojsonWrapper.name = '_geojsonTileLayer';
++            var rawTileData = vtpbf({ layers: { '_geojsonTileLayer': geojsonWrapper }}).buffer;
++            tile.parse(geojsonWrapper, this.layerFamilies, this.actor, rawTileData, callback);
++        } else {
++            return callback(null, null); // nothing in the given tile
++        }
+     }
+ });
+ 
+-util.extendAll(Map.prototype, /** @lends Map.prototype */{
++function createLayerFamilies(layers) {
++    var families = {};
+ 
+-    /**
+-     * Draw an outline around each rendered tile for debugging.
+-     *
+-     * @name showTileBoundaries
+-     * @type {boolean}
+-     */
+-    _showTileBoundaries: false,
+-    get showTileBoundaries() { return this._showTileBoundaries; },
+-    set showTileBoundaries(value) {
+-        if (this._showTileBoundaries === value) return;
+-        this._showTileBoundaries = value;
+-        this._update();
+-    },
++    for (var layerId in layers) {
++        var layer = layers[layerId];
++        var parentLayerId = layer.ref || layer.id;
++        var parentLayer = layers[parentLayerId];
+ 
+-    /**
+-     * Draw boxes around all symbols in the data source, showing which were
+-     * rendered and which were hidden due to collisions with other symbols for
+-     * style debugging.
+-     *
+-     * @name showCollisionBoxes
+-     * @type {boolean}
+-     */
+-    _showCollisionBoxes: false,
+-    get showCollisionBoxes() { return this._showCollisionBoxes; },
+-    set showCollisionBoxes(value) {
+-        if (this._showCollisionBoxes === value) return;
+-        this._showCollisionBoxes = value;
+-        this.style._redoPlacement();
+-    },
++        if (parentLayer.layout && parentLayer.layout.visibility === 'none') continue;
++
++        families[parentLayerId] = families[parentLayerId] || [];
++        if (layerId === parentLayerId) {
++            families[parentLayerId].unshift(layer);
++        } else {
++            families[parentLayerId].push(layer);
++        }
++    }
++
++    return families;
++}
++
++},{"../style/style_layer":113,"../util/actor":153,"../util/ajax":154,"../util/util":169,"./geojson_wrapper":95,"./worker_tile":106,"geojson-rewind":14,"geojson-vt":18,"pbf":173,"supercluster":178,"vector-tile":184,"vt-pbf":188}],106:[function(require,module,exports){
++'use strict';
++
++var FeatureIndex = require('../data/feature_index');
++var CollisionTile = require('../symbol/collision_tile');
++var Bucket = require('../data/bucket');
++var CollisionBoxArray = require('../symbol/collision_box');
++var DictionaryCoder = require('../util/dictionary_coder');
++
++module.exports = WorkerTile;
++
++function WorkerTile(params) {
++    this.coord = params.coord;
++    this.uid = params.uid;
++    this.zoom = params.zoom;
++    this.tileSize = params.tileSize;
++    this.source = params.source;
++    this.overscaling = params.overscaling;
++    this.angle = params.angle;
++    this.pitch = params.pitch;
++    this.showCollisionBoxes = params.showCollisionBoxes;
++}
++
++WorkerTile.prototype.parse = function(data, layerFamilies, actor, rawTileData, callback) {
++
++    this.status = 'parsing';
++    this.data = data;
++
++    this.collisionBoxArray = new CollisionBoxArray();
++    var collisionTile = new CollisionTile(this.angle, this.pitch, this.collisionBoxArray);
++    var featureIndex = new FeatureIndex(this.coord, this.overscaling, collisionTile, data.layers);
++    var sourceLayerCoder = new DictionaryCoder(data.layers ? Object.keys(data.layers).sort() : ['_geojsonTileLayer']);
++
++    var stats = { _total: 0 };
++
++    var tile = this;
++    var bucketsById = {};
++    var bucketsBySourceLayer = {};
++    var i;
++    var layer;
++    var sourceLayerId;
++    var bucket;
++
++    // Map non-ref layers to buckets.
++    var bucketIndex = 0;
++    for (var layerId in layerFamilies) {
++        layer = layerFamilies[layerId][0];
++
++        if (layer.source !== this.source) continue;
++        if (layer.ref) continue;
++        if (layer.minzoom && this.zoom < layer.minzoom) continue;
++        if (layer.maxzoom && this.zoom >= layer.maxzoom) continue;
++        if (layer.layout && layer.layout.visibility === 'none') continue;
++        if (data.layers && !data.layers[layer.sourceLayer]) continue;
+ 
+-    /*
+-     * Show how many times each fragment has been shaded. White fragments have
+-     * been shaded 8 or more times. Black fragments have been shaded 0 times.
+-     *
+-     * @name showOverdraw
+-     * @type {boolean}
+-     */
+-    _showOverdrawInspector: false,
+-    get showOverdrawInspector() { return this._showOverdrawInspector; },
+-    set showOverdrawInspector(value) {
+-        if (this._showOverdrawInspector === value) return;
+-        this._showOverdrawInspector = value;
+-        this._update();
+-    },
++        bucket = Bucket.create({
++            layer: layer,
++            index: bucketIndex++,
++            childLayers: layerFamilies[layerId],
++            zoom: this.zoom,
++            overscaling: this.overscaling,
++            showCollisionBoxes: this.showCollisionBoxes,
++            collisionBoxArray: this.collisionBoxArray,
++            sourceLayerIndex: sourceLayerCoder.encode(layer.sourceLayer || '_geojsonTileLayer')
++        });
++        bucket.createFilter();
+ 
+-    /**
+-     * Enable continuous repaint to analyze performance.
+-     *
+-     * @name repaint
+-     * @type {boolean}
+-     */
+-    _repaint: false,
+-    get repaint() { return this._repaint; },
+-    set repaint(value) { this._repaint = value; this._update(); },
++        bucketsById[layer.id] = bucket;
+ 
+-    // show vertices
+-    _vertices: false,
+-    get vertices() { return this._vertices; },
+-    set vertices(value) { this._vertices = value; this._update(); }
+-});
++        if (data.layers) { // vectortile
++            sourceLayerId = layer.sourceLayer;
++            bucketsBySourceLayer[sourceLayerId] = bucketsBySourceLayer[sourceLayerId] || {};
++            bucketsBySourceLayer[sourceLayerId][layer.id] = bucket;
++        }
++    }
+ 
+-function removeNode(node) {
+-    if (node.parentNode) {
+-        node.parentNode.removeChild(node);
++    // read each layer, and sort its features into buckets
++    if (data.layers) { // vectortile
++        for (sourceLayerId in bucketsBySourceLayer) {
++            layer = data.layers[sourceLayerId];
++            if (layer) {
++                sortLayerIntoBuckets(layer, bucketsBySourceLayer[sourceLayerId]);
++            }
++        }
++    } else { // geojson
++        sortLayerIntoBuckets(data, bucketsById);
+     }
+-}
+ 
+-/**
+- * Options common to Map#addClass, Map#removeClass, and Map#setClasses, controlling
+- * whether or not to smoothly transition property changes triggered by the class change.
+- *
+- * @typedef {Object} StyleOptions
+- * @property {boolean} transition
+- */
++    function sortLayerIntoBuckets(layer, buckets) {
++        for (var i = 0; i < layer.length; i++) {
++            var feature = layer.feature(i);
++            feature.index = i;
++            for (var id in buckets) {
++                if (buckets[id].filter(feature))
++                    buckets[id].features.push(feature);
++            }
++        }
++    }
+ 
+- /**
+-  * This event is fired whenever the map is drawn to the screen because of
+-  *
+-  *  - a change in map position, zoom, pitch, or bearing
+-  *  - a change to the map style
+-  *  - a change to a GeoJSON source
+-  *  - a vector tile, GeoJSON file, glyph, or sprite being loaded
+-  *
+-  * @event render
+-  * @memberof Map
+-  * @instance
+-  */
++    var buckets = [],
++        symbolBuckets = this.symbolBuckets = [],
++        otherBuckets = [];
+ 
+-},{"../geo/lng_lat":26,"../geo/lng_lat_bounds":27,"../geo/transform":28,"../render/painter":41,"../style/animation_loop":57,"../style/style":60,"../util/browser":105,"../util/canvas":106,"../util/dom":108,"../util/evented":111,"../util/util":119,"./camera":87,"./control/attribution":88,"./hash":99,"./interaction":100,"point-geometry":174}],102:[function(require,module,exports){
+-'use strict';
++    featureIndex.bucketLayerIDs = {};
+ 
+-module.exports = Popup;
++    for (var id in bucketsById) {
++        bucket = bucketsById[id];
++        if (bucket.features.length === 0) continue;
+ 
+-var util = require('../util/util');
+-var Evented = require('../util/evented');
+-var DOM = require('../util/dom');
+-var LngLat = require('../geo/lng_lat');
++        featureIndex.bucketLayerIDs[bucket.index] = bucket.childLayers.map(getLayerId);
+ 
+-/**
+- * Creates a popup component
+- * @class Popup
+- * @param {Object} options
+- * @param {boolean} options.closeButton whether to show a close button in the
+- * top right corner of the popup.
+- * @param {boolean} options.closeOnClick whether to close the popup when the
+- * map is clicked.
+- * @param {string} options.anchor - One of "top", "bottom", "left", "right", "top-left",
+- * "top-right", "bottom-left", or "bottom-right", describing where the popup's anchor
+- * relative to the coordinate set via `setLngLat`.
+- * @example
+- * var tooltip = new mapboxgl.Popup()
+- *   .setLngLat(e.lngLat)
+- *   .setHTML("<h1>Hello World!</h1>")
+- *   .addTo(map);
+- */
+-function Popup(options) {
+-    util.setOptions(this, options);
+-    util.bindAll([
+-        '_update',
+-        '_onClickClose'],
+-        this);
+-}
++        buckets.push(bucket);
+ 
+-Popup.prototype = util.inherit(Evented, /** @lends Popup.prototype */{
+-    options: {
+-        closeButton: true,
+-        closeOnClick: true
+-    },
++        if (bucket.type === 'symbol')
++            symbolBuckets.push(bucket);
++        else
++            otherBuckets.push(bucket);
++    }
+ 
+-    /**
+-     * Attaches the popup to a map
+-     * @param {Map} map
+-     * @returns {Popup} `this`
+-     */
+-    addTo: function(map) {
+-        this._map = map;
+-        this._map.on('move', this._update);
+-        if (this.options.closeOnClick) {
+-            this._map.on('click', this._onClickClose);
+-        }
+-        this._update();
+-        return this;
+-    },
++    var icons = {};
++    var stacks = {};
++    var deps = 0;
+ 
+-    /**
+-     * Removes the popup from a map
+-     * @example
+-     * var popup = new mapboxgl.Popup().addTo(map);
+-     * popup.remove();
+-     * @returns {Popup} `this`
+-     */
+-    remove: function() {
+-        if (this._content && this._content.parentNode) {
+-            this._content.parentNode.removeChild(this._content);
+-        }
+ 
+-        if (this._container) {
+-            this._container.parentNode.removeChild(this._container);
+-            delete this._container;
++    if (symbolBuckets.length > 0) {
++
++        // Get dependencies for symbol buckets
++        for (i = symbolBuckets.length - 1; i >= 0; i--) {
++            symbolBuckets[i].updateIcons(icons);
++            symbolBuckets[i].updateFont(stacks);
+         }
+ 
+-        if (this._map) {
+-            this._map.off('move', this._update);
+-            this._map.off('click', this._onClickClose);
+-            delete this._map;
++        for (var fontName in stacks) {
++            stacks[fontName] = Object.keys(stacks[fontName]).map(Number);
+         }
++        icons = Object.keys(icons);
+ 
+-        return this;
+-    },
++        actor.send('get glyphs', {uid: this.uid, stacks: stacks}, function(err, newStacks) {
++            stacks = newStacks;
++            gotDependency(err);
++        });
+ 
+-    /**
+-     * Get the popup's geographical location
+-     * @returns {LngLat}
+-     */
+-    getLngLat: function() {
+-        return this._lngLat;
+-    },
++        if (icons.length) {
++            actor.send('get icons', {icons: icons}, function(err, newIcons) {
++                icons = newIcons;
++                gotDependency(err);
++            });
++        } else {
++            gotDependency();
++        }
++    }
+ 
+-    /**
+-     * Set the popup's geographical position and move it.
+-     * @param {LngLat} lnglat
+-     * @returns {Popup} `this`
+-     */
+-    setLngLat: function(lnglat) {
+-        this._lngLat = LngLat.convert(lnglat);
+-        this._update();
+-        return this;
+-    },
++    // immediately parse non-symbol buckets (they have no dependencies)
++    for (i = otherBuckets.length - 1; i >= 0; i--) {
++        parseBucket(this, otherBuckets[i]);
++    }
+ 
+-    /**
+-     * Fill a popup element with text only content. This creates a text node
+-     * in the DOM, so it cannot end up appending raw HTML. Use this method
+-     * if you want an added level of security against XSS if the popup
+-     * content is user-provided.
+-     * @param {string} text
+-     * @returns {Popup} `this`
+-     * @example
+-     * var tooltip = new mapboxgl.Popup()
+-     *   .setLngLat(e.lngLat)
+-     *   .setText('Hello, world!')
+-     *   .addTo(map);
+-     */
+-    setText: function(text) {
+-        return this.setDOMContent(document.createTextNode(text));
+-    },
++    if (symbolBuckets.length === 0)
++        return done();
+ 
+-    /**
+-     * Fill a popup element with HTML content, provided as a string.
+-     * @param {string} html
+-     * @returns {Popup} `this`
+-     */
+-    setHTML: function(html) {
+-        var frag = document.createDocumentFragment();
+-        var temp = document.createElement('body'), child;
+-        temp.innerHTML = html;
+-        while (true) {
+-            child = temp.firstChild;
+-            if (!child) break;
+-            frag.appendChild(child);
++    function gotDependency(err) {
++        if (err) return callback(err);
++        deps++;
++        if (deps === 2) {
++            // all symbol bucket dependencies fetched; parse them in proper order
++            for (var i = symbolBuckets.length - 1; i >= 0; i--) {
++                parseBucket(tile, symbolBuckets[i]);
++            }
++            done();
+         }
++    }
+ 
+-        return this.setDOMContent(frag);
+-    },
++    function parseBucket(tile, bucket) {
++        var now = Date.now();
++        bucket.populateBuffers(collisionTile, stacks, icons);
++        var time = Date.now() - now;
+ 
+-    /**
+-     * Fill a popup element with DOM content
+-     * @param {Node} htmlNode Popup content as a DOM node
+-     * @returns {Popup} `this`
+-     * @example
+-     * // create an element with the popup content
+-     * var div = document.createElement('div');
+-     * div.innerHTML = 'Hello, world!';
+-     * var tooltip = new mapboxgl.Popup()
+-     *   .setLngLat(e.lngLat)
+-     *   .setDOMContent(div)
+-     *   .addTo(map);
+-     */
+-    setDOMContent: function(htmlNode) {
+-        this._createContent();
+-        this._content.appendChild(htmlNode);
+-        this._update();
+-        return this;
+-    },
+ 
+-    _createContent: function() {
+-        if (this._content && this._content.parentNode) {
+-            this._content.parentNode.removeChild(this._content);
++        if (bucket.type !== 'symbol') {
++            for (var i = 0; i < bucket.features.length; i++) {
++                var feature = bucket.features[i];
++                featureIndex.insert(feature, feature.index, bucket.sourceLayerIndex, bucket.index);
++            }
+         }
+ 
+-        this._content = DOM.create('div', 'mapboxgl-popup-content', this._container);
++        bucket.features = null;
+ 
+-        if (this.options.closeButton) {
+-            this._closeButton = DOM.create('button', 'mapboxgl-popup-close-button', this._content);
+-            this._closeButton.innerHTML = '&#215;';
+-            this._closeButton.addEventListener('click', this._onClickClose);
+-        }
+-    },
++        stats._total += time;
++        stats[bucket.id] = (stats[bucket.id] || 0) + time;
++    }
+ 
+-    _update: function() {
+-        if (!this._map || !this._lngLat || !this._content) { return; }
++    function done() {
++        tile.status = 'done';
+ 
+-        if (!this._container) {
+-            this._container = DOM.create('div', 'mapboxgl-popup', this._map.getContainer());
+-            this._tip       = DOM.create('div', 'mapboxgl-popup-tip', this._container);
+-            this._container.appendChild(this._content);
++        if (tile.redoPlacementAfterDone) {
++            tile.redoPlacement(tile.angle, tile.pitch, null);
++            tile.redoPlacementAfterDone = false;
+         }
+ 
+-        var pos = this._map.project(this._lngLat).round(),
+-            anchor = this.options.anchor;
++        var featureIndex_ = featureIndex.serialize();
++        var collisionTile_ = collisionTile.serialize();
++        var collisionBoxArray = tile.collisionBoxArray.serialize();
++        var transferables = [rawTileData].concat(featureIndex_.transferables).concat(collisionTile_.transferables);
+ 
+-        if (!anchor) {
+-            var width = this._container.offsetWidth,
+-                height = this._container.offsetHeight;
++        var nonEmptyBuckets = buckets.filter(isBucketEmpty);
+ 
+-            if (pos.y < height) {
+-                anchor = ['top'];
+-            } else if (pos.y > this._map.transform.height - height) {
+-                anchor = ['bottom'];
+-            } else {
+-                anchor = [];
+-            }
++        callback(null, {
++            buckets: nonEmptyBuckets.map(serializeBucket),
++            bucketStats: stats, // TODO put this in a separate message?
++            featureIndex: featureIndex_.data,
++            collisionTile: collisionTile_.data,
++            collisionBoxArray: collisionBoxArray,
++            rawTileData: rawTileData
++        }, getTransferables(nonEmptyBuckets).concat(transferables));
++    }
++};
+ 
+-            if (pos.x < width / 2) {
+-                anchor.push('left');
+-            } else if (pos.x > this._map.transform.width - width / 2) {
+-                anchor.push('right');
+-            }
++WorkerTile.prototype.redoPlacement = function(angle, pitch, showCollisionBoxes) {
++    if (this.status !== 'done') {
++        this.redoPlacementAfterDone = true;
++        this.angle = angle;
++        return {};
++    }
+ 
+-            if (anchor.length === 0) {
+-                anchor = 'bottom';
+-            } else {
+-                anchor = anchor.join('-');
+-            }
+-        }
++    var collisionTile = new CollisionTile(angle, pitch, this.collisionBoxArray);
+ 
+-        var anchorTranslate = {
+-            'top': 'translate(-50%,0)',
+-            'top-left': 'translate(0,0)',
+-            'top-right': 'translate(-100%,0)',
+-            'bottom': 'translate(-50%,-100%)',
+-            'bottom-left': 'translate(0,-100%)',
+-            'bottom-right': 'translate(-100%,-100%)',
+-            'left': 'translate(0,-50%)',
+-            'right': 'translate(-100%,-50%)'
+-        };
++    var buckets = this.symbolBuckets;
+ 
+-        var classList = this._container.classList;
+-        for (var key in anchorTranslate) {
+-            classList.remove('mapboxgl-popup-anchor-' + key);
++    for (var i = buckets.length - 1; i >= 0; i--) {
++        buckets[i].placeFeatures(collisionTile, showCollisionBoxes);
++    }
++
++    var collisionTile_ = collisionTile.serialize();
++
++    var nonEmptyBuckets = buckets.filter(isBucketEmpty);
++
++    return {
++        result: {
++            buckets: nonEmptyBuckets.map(serializeBucket),
++            collisionTile: collisionTile_.data
++        },
++        transferables: getTransferables(nonEmptyBuckets).concat(collisionTile_.transferables)
++    };
++};
++
++function isBucketEmpty(bucket) {
++    for (var programName in bucket.arrayGroups) {
++        var programArrayGroups = bucket.arrayGroups[programName];
++        for (var k = 0; k < programArrayGroups.length; k++) {
++            var programArrayGroup = programArrayGroups[k];
++            for (var layoutOrPaint in programArrayGroup) {
++                var arrays = programArrayGroup[layoutOrPaint];
++                for (var bufferName in arrays) {
++                    if (arrays[bufferName].length > 0) return true;
++                }
++            }
+         }
+-        classList.add('mapboxgl-popup-anchor-' + anchor);
++    }
++    return false;
++}
+ 
+-        DOM.setTransform(this._container, anchorTranslate[anchor] + ' translate(' + pos.x + 'px,' + pos.y + 'px)');
+-    },
++function serializeBucket(bucket) {
++    return bucket.serialize();
++}
+ 
+-    _onClickClose: function() {
+-        this.remove();
++function getTransferables(buckets) {
++    var transferables = [];
++    for (var i in buckets) {
++        var bucket = buckets[i];
++        for (var programName in bucket.arrayGroups) {
++            var programArrayGroups = bucket.arrayGroups[programName];
++            for (var k = 0; k < programArrayGroups.length; k++) {
++                var programArrayGroup = programArrayGroups[k];
++                for (var layoutOrPaint in programArrayGroup) {
++                    var arrays = programArrayGroup[layoutOrPaint];
++                    for (var bufferName in arrays) {
++                        transferables.push(arrays[bufferName].arrayBuffer);
++                    }
++                }
++            }
++        }
+     }
+-});
++    return transferables;
++}
+ 
+-},{"../geo/lng_lat":26,"../util/dom":108,"../util/evented":111,"../util/util":119}],103:[function(require,module,exports){
++function getLayerId(layer) {
++    return layer.id;
++}
++
++},{"../data/bucket":67,"../data/feature_index":73,"../symbol/collision_box":126,"../symbol/collision_tile":128,"../util/dictionary_coder":160}],107:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = Actor;
++module.exports = AnimationLoop;
+ 
+-/**
+- * An implementation of the [Actor design pattern](http://en.wikipedia.org/wiki/Actor_model)
+- * that maintains the relationship between asynchronous tasks and the objects
+- * that spin them off - in this case, tasks like parsing parts of styles,
+- * owned by the styles
+- *
+- * @param {WebWorker} target
+- * @param {WebWorker} parent
+- * @private
+- */
+-function Actor(target, parent) {
+-    this.target = target;
+-    this.parent = parent;
+-    this.callbacks = {};
+-    this.callbackID = 0;
+-    this.receive = this.receive.bind(this);
+-    this.target.addEventListener('message', this.receive, false);
++function AnimationLoop() {
++    this.n = 0;
++    this.times = [];
+ }
+ 
+-Actor.prototype.receive = function(message) {
+-    var data = message.data,
+-        callback;
++// Are all animations done?
++AnimationLoop.prototype.stopped = function() {
++    this.times = this.times.filter(function(t) {
++        return t.time >= (new Date()).getTime();
++    });
++    return !this.times.length;
++};
+ 
+-    if (data.type === '<response>') {
+-        callback = this.callbacks[data.id];
+-        delete this.callbacks[data.id];
+-        callback(data.error || null, data.data);
+-    } else if (typeof data.id !== 'undefined') {
+-        var id = data.id;
+-        this.parent[data.type](data.data, function(err, data, buffers) {
+-            this.postMessage({
+-                type: '<response>',
+-                id: String(id),
+-                error: err ? String(err) : null,
+-                data: data
+-            }, buffers);
+-        }.bind(this));
+-    } else {
+-        this.parent[data.type](data.data);
+-    }
++// Add a new animation that will run t milliseconds
++// Returns an id that can be used to cancel it layer
++AnimationLoop.prototype.set = function(t) {
++    this.times.push({ id: this.n, time: t + (new Date()).getTime() });
++    return this.n++;
+ };
+ 
+-Actor.prototype.send = function(type, data, callback, buffers) {
+-    var id = null;
+-    if (callback) this.callbacks[id = this.callbackID++] = callback;
+-    this.postMessage({ type: type, id: String(id), data: data }, buffers);
++// Cancel an animation
++AnimationLoop.prototype.cancel = function(n) {
++    this.times = this.times.filter(function(t) {
++        return t.id !== n;
++    });
+ };
+ 
+-/**
+- * Wrapped postMessage API that abstracts around IE's lack of
+- * `transferList` support.
+- *
+- * @param {Object} message
+- * @param {Object} transferList
+- * @private
+- */
+-Actor.prototype.postMessage = function(message, transferList) {
+-    this.target.postMessage(message, transferList);
+-};
++},{}],108:[function(require,module,exports){
++'use strict';
++
++var Evented = require('../util/evented');
++var ajax = require('../util/ajax');
++var browser = require('../util/browser');
++var normalizeURL = require('../util/mapbox').normalizeSpriteURL;
++
++module.exports = ImageSprite;
++
++function ImageSprite(base) {
++    this.base = base;
++    this.retina = browser.devicePixelRatio > 1;
++
++    var format = this.retina ? '@2x' : '';
+ 
+-},{}],104:[function(require,module,exports){
+-'use strict';
++    ajax.getJSON(normalizeURL(base, format, '.json'), function(err, data) {
++        if (err) {
++            this.fire('error', {error: err});
++            return;
++        }
+ 
+-exports.getJSON = function(url, callback) {
+-    var xhr = new XMLHttpRequest();
+-    xhr.open('GET', url, true);
+-    xhr.setRequestHeader('Accept', 'application/json');
+-    xhr.onerror = function(e) {
+-        callback(e);
+-    };
+-    xhr.onload = function() {
+-        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
+-            var data;
+-            try {
+-                data = JSON.parse(xhr.response);
+-            } catch (err) {
+-                return callback(err);
+-            }
+-            callback(null, data);
+-        } else {
+-            callback(new Error(xhr.statusText));
++        this.data = data;
++        if (this.img) this.fire('load');
++    }.bind(this));
++
++    ajax.getImage(normalizeURL(base, format, '.png'), function(err, img) {
++        if (err) {
++            this.fire('error', {error: err});
++            return;
+         }
+-    };
+-    xhr.send();
+-    return xhr;
+-};
+ 
+-exports.getArrayBuffer = function(url, callback) {
+-    var xhr = new XMLHttpRequest();
+-    xhr.open('GET', url, true);
+-    xhr.responseType = 'arraybuffer';
+-    xhr.onerror = function(e) {
+-        callback(e);
+-    };
+-    xhr.onload = function() {
+-        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
+-            callback(null, xhr.response);
+-        } else {
+-            callback(new Error(xhr.statusText));
++        // premultiply the sprite
++        var data = img.getData();
++        var newdata = img.data = new Uint8Array(data.length);
++        for (var i = 0; i < data.length; i += 4) {
++            var alpha = data[i + 3] / 255;
++            newdata[i + 0] = data[i + 0] * alpha;
++            newdata[i + 1] = data[i + 1] * alpha;
++            newdata[i + 2] = data[i + 2] * alpha;
++            newdata[i + 3] = data[i + 3];
+         }
+-    };
+-    xhr.send();
+-    return xhr;
+-};
+ 
+-function sameOrigin(url) {
+-    var a = document.createElement('a');
+-    a.href = url;
+-    return a.protocol === document.location.protocol && a.host === document.location.host;
++        this.img = img;
++        if (this.data) this.fire('load');
++    }.bind(this));
+ }
+ 
+-exports.getImage = function(url, callback) {
+-    return exports.getArrayBuffer(url, function(err, imgData) {
+-        if (err) return callback(err);
+-        var img = new Image();
+-        img.onload = function() {
+-            callback(null, img);
+-            (window.URL || window.webkitURL).revokeObjectURL(img.src);
+-        };
+-        var blob = new Blob([new Uint8Array(imgData)], { type: 'image/png' });
+-        img.src = (window.URL || window.webkitURL).createObjectURL(blob);
+-        img.getData = function() {
+-            var canvas = document.createElement('canvas');
+-            var context = canvas.getContext('2d');
+-            canvas.width = img.width;
+-            canvas.height = img.height;
+-            context.drawImage(img, 0, 0);
+-            return context.getImageData(0, 0, img.width, img.height).data;
+-        };
+-        return img;
+-    });
++ImageSprite.prototype = Object.create(Evented);
++
++ImageSprite.prototype.toJSON = function() {
++    return this.base;
+ };
+ 
+-exports.getVideo = function(urls, callback) {
+-    var video = document.createElement('video');
+-    video.onloadstart = function() {
+-        callback(null, video);
+-    };
+-    for (var i = 0; i < urls.length; i++) {
+-        var s = document.createElement('source');
+-        if (!sameOrigin(urls[i])) {
+-            video.crossOrigin = 'Anonymous';
+-        }
+-        s.src = urls[i];
+-        video.appendChild(s);
+-    }
+-    video.getData = function() { return video; };
+-    return video;
++ImageSprite.prototype.loaded = function() {
++    return !!(this.data && this.img);
+ };
+ 
+-},{}],105:[function(require,module,exports){
+-'use strict';
++ImageSprite.prototype.resize = function(/*gl*/) {
++    if (browser.devicePixelRatio > 1 !== this.retina) {
++        var newSprite = new ImageSprite(this.base);
++        newSprite.on('load', function() {
++            this.img = newSprite.img;
++            this.data = newSprite.data;
++            this.retina = newSprite.retina;
++        }.bind(this));
++    }
++};
+ 
+-/**
+- * Unlike js/util/browser.js, this code is written with the expectation
+- * of a browser environment with a global 'window' object
+- * @module browser
+- * @private
+- */
++function SpritePosition() {}
++SpritePosition.prototype = { x: 0, y: 0, width: 0, height: 0, pixelRatio: 1, sdf: false };
+ 
+-/**
+- * Provides a function that outputs milliseconds: either performance.now()
+- * or a fallback to Date.now()
+- */
+-module.exports.now = (function() {
+-    if (window.performance &&
+-        window.performance.now) {
+-        return window.performance.now.bind(window.performance);
+-    } else {
+-        return Date.now.bind(Date);
+-    }
+-}());
++ImageSprite.prototype.getSpritePosition = function(name) {
++    if (!this.loaded()) return new SpritePosition();
+ 
+-var frame = window.requestAnimationFrame ||
+-    window.mozRequestAnimationFrame ||
+-    window.webkitRequestAnimationFrame ||
+-    window.msRequestAnimationFrame;
++    var pos = this.data && this.data[name];
++    if (pos && this.img) return pos;
+ 
+-exports.frame = function(fn) {
+-    return frame(fn);
++    return new SpritePosition();
+ };
+ 
+-var cancel = window.cancelAnimationFrame ||
+-    window.mozCancelAnimationFrame ||
+-    window.webkitCancelAnimationFrame ||
+-    window.msCancelAnimationFrame;
++},{"../util/ajax":154,"../util/browser":155,"../util/evented":161,"../util/mapbox":166}],109:[function(require,module,exports){
++'use strict';
+ 
+-exports.cancelFrame = function(id) {
+-    cancel(id);
+-};
++var parseCSSColor = require('csscolorparser').parseCSSColor;
++var util = require('../util/util');
+ 
+-exports.timed = function (fn, dur, ctx) {
+-    if (!dur) {
+-        fn.call(ctx, 1);
+-        return null;
+-    }
++var colorCache = {};
+ 
+-    var abort = false,
+-        start = module.exports.now();
++function parseColor(input) {
+ 
+-    function tick(now) {
+-        if (abort) return;
+-        now = module.exports.now();
++    if (colorCache[input]) {
++        return colorCache[input];
+ 
+-        if (now >= start + dur) {
+-            fn.call(ctx, 1);
+-        } else {
+-            fn.call(ctx, (now - start) / dur);
+-            exports.frame(tick);
+-        }
+-    }
++    // RGBA array
++    } else if (Array.isArray(input)) {
++        return input;
+ 
+-    exports.frame(tick);
++    // GL function
++    } else if (input && input.stops) {
++        return util.extend({}, input, {
++            stops: input.stops.map(parseFunctionStopColor)
++        });
+ 
+-    return function() { abort = true; };
+-};
++    // Color string
++    } else if (typeof input === 'string') {
++        var parsedColor = parseCSSColor(input);
++        if (!parsedColor) { throw new Error('Invalid color ' + input); }
+ 
+-/**
+- * Test if the current browser supports Mapbox GL JS
+- * @param {Object} options
+- * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
+- *   if the performance of Mapbox GL JS would be dramatically worse than
+- *   expected (i.e. a software renderer would be used)
+- * @return {boolean}
+- */
+-exports.supported = require('mapbox-gl-js-supported');
++        var output = colorDowngrade(parsedColor);
++        colorCache[input] = output;
++        return output;
+ 
+-exports.hardwareConcurrency = navigator.hardwareConcurrency || 8;
++    } else {
++        throw new Error('Invalid color ' + input);
++    }
+ 
+-Object.defineProperty(exports, 'devicePixelRatio', {
+-    get: function() { return window.devicePixelRatio; }
+-});
++}
+ 
+-exports.supportsWebp = false;
++function parseFunctionStopColor(stop) {
++    return [stop[0], parseColor(stop[1])];
++}
+ 
+-var webpImgTest = document.createElement('img');
+-webpImgTest.onload = function() {
+-    exports.supportsWebp = true;
+-};
+-webpImgTest.src = 'data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=';
++function colorDowngrade(color) {
++    return [color[0] / 255, color[1] / 255, color[2] / 255, color[3] / 1];
++}
+ 
+-exports.supportsGeolocation = !!navigator.geolocation;
++module.exports = parseColor;
+ 
+-},{"mapbox-gl-js-supported":145}],106:[function(require,module,exports){
++},{"../util/util":169,"csscolorparser":7}],110:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('../util');
+-var isSupported = require('mapbox-gl-js-supported');
++var Evented = require('../util/evented');
++var StyleLayer = require('./style_layer');
++var ImageSprite = require('./image_sprite');
++var GlyphSource = require('../symbol/glyph_source');
++var SpriteAtlas = require('../symbol/sprite_atlas');
++var LineAtlas = require('../render/line_atlas');
++var util = require('../util/util');
++var ajax = require('../util/ajax');
++var normalizeURL = require('../util/mapbox').normalizeStyleURL;
++var browser = require('../util/browser');
++var Dispatcher = require('../util/dispatcher');
++var AnimationLoop = require('./animation_loop');
++var validateStyle = require('./validate_style');
++var Source = require('../source/source');
++var styleSpec = require('./style_spec');
++var StyleFunction = require('./style_function');
+ 
+-module.exports = Canvas;
++module.exports = Style;
+ 
+-function Canvas(parent, container) {
+-    this.canvas = document.createElement('canvas');
++function Style(stylesheet, animationLoop) {
++    this.animationLoop = animationLoop || new AnimationLoop();
++    this.dispatcher = new Dispatcher(Math.max(browser.hardwareConcurrency - 1, 1), this);
++    this.spriteAtlas = new SpriteAtlas(512, 512);
++    this.lineAtlas = new LineAtlas(256, 512);
+ 
+-    if (parent && container) {
+-        this.canvas.style.position = 'absolute';
+-        this.canvas.classList.add('mapboxgl-canvas');
+-        this.canvas.addEventListener('webglcontextlost', parent._contextLost.bind(parent), false);
+-        this.canvas.addEventListener('webglcontextrestored', parent._contextRestored.bind(parent), false);
+-        this.canvas.setAttribute('tabindex', 0);
+-        container.appendChild(this.canvas);
+-    }
+-}
++    this._layers = {};
++    this._order  = [];
++    this._groups = [];
++    this.sources = {};
++    this.zoomHistory = {};
+ 
+-Canvas.prototype.resize = function(width, height) {
+-    var pixelRatio = window.devicePixelRatio || 1;
++    util.bindAll([
++        '_forwardSourceEvent',
++        '_forwardTileEvent',
++        '_forwardLayerEvent',
++        '_redoPlacement'
++    ], this);
+ 
+-    // Request the required canvas size taking the pixelratio into account.
+-    this.canvas.width = pixelRatio * width;
+-    this.canvas.height = pixelRatio * height;
++    this._resetUpdates();
+ 
+-    // Maintain the same canvas size, potentially downscaling it for HiDPI displays
+-    this.canvas.style.width = width + 'px';
+-    this.canvas.style.height = height + 'px';
+-};
++    var loaded = function(err, stylesheet) {
++        if (err) {
++            this.fire('error', {error: err});
++            return;
++        }
+ 
+-Canvas.prototype.getWebGLContext = function(attributes) {
+-    attributes = util.extend({}, attributes, isSupported.webGLContextAttributes);
++        if (validateStyle.emitErrors(this, validateStyle(stylesheet))) return;
+ 
+-    return this.canvas.getContext('webgl', attributes) ||
+-        this.canvas.getContext('experimental-webgl', attributes);
+-};
++        this._loaded = true;
++        this.stylesheet = stylesheet;
+ 
+-Canvas.prototype.getElement = function() {
+-    return this.canvas;
+-};
++        this.updateClasses();
+ 
+-},{"../util":119,"mapbox-gl-js-supported":145}],107:[function(require,module,exports){
+-'use strict';
++        var sources = stylesheet.sources;
++        for (var id in sources) {
++            this.addSource(id, sources[id]);
++        }
+ 
+-var Actor = require('../actor');
+-var WebWorkify = require('webworkify');
++        if (stylesheet.sprite) {
++            this.sprite = new ImageSprite(stylesheet.sprite);
++            this.sprite.on('load', this.fire.bind(this, 'change'));
++        }
+ 
+-module.exports = Dispatcher;
++        this.glyphSource = new GlyphSource(stylesheet.glyphs);
++        this._resolve();
++        this.fire('load');
++    }.bind(this);
+ 
+-function Dispatcher(length, parent) {
+-    this.actors = [];
+-    this.currentActor = 0;
+-    for (var i = 0; i < length; i++) {
+-        var worker = new WebWorkify(require('../../source/worker'));
+-        var actor = new Actor(worker, parent);
+-        actor.name = "Worker " + i;
+-        this.actors.push(actor);
++    if (typeof stylesheet === 'string') {
++        ajax.getJSON(normalizeURL(stylesheet), loaded);
++    } else {
++        browser.frame(loaded.bind(this, null, stylesheet));
+     }
++
++    this.on('source.load', function(event) {
++        var source = event.source;
++        if (source && source.vectorLayerIds) {
++            for (var layerId in this._layers) {
++                var layer = this._layers[layerId];
++                if (layer.source === source.id) {
++                    this._validateLayer(layer);
++                }
++            }
++        }
++    });
+ }
+ 
+-Dispatcher.prototype = {
+-    broadcast: function(type, data) {
+-        for (var i = 0; i < this.actors.length; i++) {
+-            this.actors[i].send(type, data);
++Style.prototype = util.inherit(Evented, {
++    _loaded: false,
++
++    _validateLayer: function(layer) {
++        var source = this.sources[layer.source];
++
++        if (!layer.sourceLayer) return;
++        if (!source) return;
++        if (!source.vectorLayerIds) return;
++
++        if (source.vectorLayerIds.indexOf(layer.sourceLayer) === -1) {
++            this.fire('error', {
++                error: new Error(
++                    'Source layer "' + layer.sourceLayer + '" ' +
++                    'does not exist on source "' + source.id + '" ' +
++                    'as specified by style layer "' + layer.id + '"'
++                )
++            });
+         }
+     },
+ 
+-    send: function(type, data, callback, targetID, buffers) {
+-        if (typeof targetID !== 'number' || isNaN(targetID)) {
+-            // Use round robin to send requests to web workers.
+-            targetID = this.currentActor = (this.currentActor + 1) % this.actors.length;
+-        }
++    loaded: function() {
++        if (!this._loaded)
++            return false;
+ 
+-        this.actors[targetID].send(type, data, callback, buffers);
+-        return targetID;
++        for (var id in this.sources)
++            if (!this.sources[id].loaded())
++                return false;
++
++        if (this.sprite && !this.sprite.loaded())
++            return false;
++
++        return true;
+     },
+ 
+-    remove: function() {
+-        for (var i = 0; i < this.actors.length; i++) {
+-            this.actors[i].target.terminate();
++    _resolve: function() {
++        var layer, layerJSON;
++
++        this._layers = {};
++        this._order  = this.stylesheet.layers.map(function(layer) {
++            return layer.id;
++        });
++
++        // resolve all layers WITHOUT a ref
++        for (var i = 0; i < this.stylesheet.layers.length; i++) {
++            layerJSON = this.stylesheet.layers[i];
++            if (layerJSON.ref) continue;
++            layer = StyleLayer.create(layerJSON);
++            this._layers[layer.id] = layer;
++            layer.on('error', this._forwardLayerEvent);
+         }
+-        this.actors = [];
+-    }
+-};
+ 
+-},{"../../source/worker":55,"../actor":103,"webworkify":190}],108:[function(require,module,exports){
+-'use strict';
++        // resolve all layers WITH a ref
++        for (var j = 0; j < this.stylesheet.layers.length; j++) {
++            layerJSON = this.stylesheet.layers[j];
++            if (!layerJSON.ref) continue;
++            var refLayer = this.getLayer(layerJSON.ref);
++            layer = StyleLayer.create(layerJSON, refLayer);
++            this._layers[layer.id] = layer;
++            layer.on('error', this._forwardLayerEvent);
++        }
+ 
+-var Point = require('point-geometry');
++        this._groupLayers();
++        this._updateWorkerLayers();
++    },
+ 
+-exports.create = function (tagName, className, container) {
+-    var el = document.createElement(tagName);
+-    if (className) el.className = className;
+-    if (container) container.appendChild(el);
+-    return el;
+-};
++    _groupLayers: function() {
++        var group;
+ 
+-var docStyle = document.documentElement.style;
++        this._groups = [];
+ 
+-function testProp(props) {
+-    for (var i = 0; i < props.length; i++) {
+-        if (props[i] in docStyle) {
+-            return props[i];
+-        }
+-    }
+-}
++        // Split into groups of consecutive top-level layers with the same source.
++        for (var i = 0; i < this._order.length; ++i) {
++            var layer = this._layers[this._order[i]];
+ 
+-var selectProp = testProp(['userSelect', 'MozUserSelect', 'WebkitUserSelect', 'msUserSelect']),
+-    userSelect;
+-exports.disableDrag = function () {
+-    if (selectProp) {
+-        userSelect = docStyle[selectProp];
+-        docStyle[selectProp] = 'none';
+-    }
+-};
+-exports.enableDrag = function () {
+-    if (selectProp) {
+-        docStyle[selectProp] = userSelect;
+-    }
+-};
++            if (!group || layer.source !== group.source) {
++                group = [];
++                group.source = layer.source;
++                this._groups.push(group);
++            }
+ 
+-var transformProp = testProp(['transform', 'WebkitTransform']);
+-exports.setTransform = function(el, value) {
+-    el.style[transformProp] = value;
+-};
++            group.push(layer);
++        }
++    },
+ 
+-// Suppress the next click, but only if it's immediate.
+-function suppressClick(e) {
+-    e.preventDefault();
+-    e.stopPropagation();
+-    window.removeEventListener('click', suppressClick, true);
+-}
+-exports.suppressClick = function() {
+-    window.addEventListener('click', suppressClick, true);
+-    window.setTimeout(function() {
+-        window.removeEventListener('click', suppressClick, true);
+-    }, 0);
+-};
++    _updateWorkerLayers: function(ids) {
++        this.dispatcher.broadcast(ids ? 'update layers' : 'set layers', this._serializeLayers(ids));
++    },
+ 
+-exports.mousePos = function (el, e) {
+-    var rect = el.getBoundingClientRect();
+-    e = e.touches ? e.touches[0] : e;
+-    return new Point(
+-        e.clientX - rect.left - el.clientLeft,
+-        e.clientY - rect.top - el.clientTop
+-    );
+-};
++    _serializeLayers: function(ids) {
++        ids = ids || this._order;
++        var serialized = [];
++        var options = {includeRefProperties: true};
++        for (var i = 0; i < ids.length; i++) {
++            serialized.push(this._layers[ids[i]].serialize(options));
++        }
++        return serialized;
++    },
++
++    _applyClasses: function(classes, options) {
++        if (!this._loaded) return;
+ 
+-exports.touchPos = function (el, e) {
+-    var rect = el.getBoundingClientRect(),
+-        points = [];
+-    for (var i = 0; i < e.touches.length; i++) {
+-        points.push(new Point(
+-            e.touches[i].clientX - rect.left - el.clientLeft,
+-            e.touches[i].clientY - rect.top - el.clientTop
+-        ));
+-    }
+-    return points;
+-};
++        classes = classes || [];
++        options = options || {transition: true};
++        var transition = this.stylesheet.transition || {};
+ 
+-},{"point-geometry":174}],109:[function(require,module,exports){
+-'use strict';
++        var layers = this._updates.allPaintProps ? this._layers : this._updates.paintProps;
+ 
+-module.exports = {
+-    API_URL: 'https://api.mapbox.com',
+-    REQUIRE_ACCESS_TOKEN: true
+-};
++        for (var id in layers) {
++            var layer = this._layers[id];
++            var props = this._updates.paintProps[id];
+ 
+-},{}],110:[function(require,module,exports){
+-'use strict';
++            if (this._updates.allPaintProps || props.all) {
++                layer.updatePaintTransitions(classes, options, transition, this.animationLoop);
++            } else {
++                for (var paintName in props) {
++                    this._layers[id].updatePaintTransition(paintName, classes, options, transition, this.animationLoop);
++                }
++            }
++        }
++    },
+ 
+-var assert = require('assert');
++    _recalculate: function(z) {
++        for (var sourceId in this.sources)
++            this.sources[sourceId].used = false;
+ 
+-module.exports = DictionaryCoder;
++        this._updateZoomHistory(z);
+ 
+-function DictionaryCoder(strings) {
+-    this._stringToNumber = {};
+-    this._numberToString = [];
+-    for (var i = 0; i < strings.length; i++) {
+-        var string = strings[i];
+-        this._stringToNumber[string] = i;
+-        this._numberToString[i] = string;
+-    }
+-}
++        this.rasterFadeDuration = 300;
++        for (var layerId in this._layers) {
++            var layer = this._layers[layerId];
+ 
+-DictionaryCoder.prototype.encode = function(string) {
+-    assert(string in this._stringToNumber);
+-    return this._stringToNumber[string];
+-};
++            layer.recalculate(z, this.zoomHistory);
++            if (!layer.isHidden(z) && layer.source) {
++                this.sources[layer.source].used = true;
++            }
++        }
+ 
+-DictionaryCoder.prototype.decode = function(n) {
+-    assert(n < this._numberToString.length);
+-    return this._numberToString[n];
+-};
++        var maxZoomTransitionDuration = 300;
++        if (Math.floor(this.z) !== Math.floor(z)) {
++            this.animationLoop.set(maxZoomTransitionDuration);
++        }
+ 
+-},{"assert":6}],111:[function(require,module,exports){
+-'use strict';
++        this.z = z;
++        this.fire('zoom');
++    },
+ 
+-var util = require('./util');
++    _updateZoomHistory: function(z) {
+ 
+-/**
+- * Methods mixed in to other classes for event capabilities.
+- * @mixin Evented
+- */
+-var Evented = {
++        var zh = this.zoomHistory;
+ 
+-    /**
+-     * Subscribe to a specified event with a listener function the latter gets the data object that was passed to `fire` and additionally `target` and `type` properties
+-     *
+-     * @param {string} type Event type
+-     * @param {Function} listener Function to be called when the event is fired
+-     * @returns {Object} `this`
+-     */
+-    on: function(type, listener) {
+-        this._events = this._events || {};
+-        this._events[type] = this._events[type] || [];
+-        this._events[type].push(listener);
++        if (zh.lastIntegerZoom === undefined) {
++            // first time
++            zh.lastIntegerZoom = Math.floor(z);
++            zh.lastIntegerZoomTime = 0;
++            zh.lastZoom = z;
++        }
+ 
+-        return this;
++        // check whether an integer zoom level as passed since the last frame
++        // and if yes, record it with the time. Used for transitioning patterns.
++        if (Math.floor(zh.lastZoom) < Math.floor(z)) {
++            zh.lastIntegerZoom = Math.floor(z);
++            zh.lastIntegerZoomTime = Date.now();
++
++        } else if (Math.floor(zh.lastZoom) > Math.floor(z)) {
++            zh.lastIntegerZoom = Math.floor(z + 1);
++            zh.lastIntegerZoomTime = Date.now();
++        }
++
++        zh.lastZoom = z;
++    },
++
++    _checkLoaded: function () {
++        if (!this._loaded) {
++            throw new Error('Style is not done loading');
++        }
+     },
+ 
+     /**
+-     * Remove a event listener
+-     *
+-     * @param {string} [type] Event type. If none is specified, remove all listeners
+-     * @param {Function} [listener] Function to be called when the event is fired. If none is specified all listeners are removed
+-     * @returns {Object} `this`
++     * Apply queued style updates in a batch
++     * @private
+      */
+-    off: function(type, listener) {
+-        if (!type) {
+-            // clear all listeners if no arguments specified
+-            delete this._events;
+-            return this;
++    update: function(classes, options) {
++        if (!this._updates.changed) return this;
++
++        if (this._updates.allLayers) {
++            this._groupLayers();
++            this._updateWorkerLayers();
++        } else {
++            var updatedIds = Object.keys(this._updates.layers);
++            if (updatedIds.length) {
++                this._updateWorkerLayers(updatedIds);
++            }
+         }
+ 
+-        if (!this.listens(type)) return this;
++        var updatedSourceIds = Object.keys(this._updates.sources);
++        var i;
++        for (i = 0; i < updatedSourceIds.length; i++) {
++            this._reloadSource(updatedSourceIds[i]);
++        }
+ 
+-        if (listener) {
+-            var idx = this._events[type].indexOf(listener);
+-            if (idx >= 0) {
+-                this._events[type].splice(idx, 1);
+-            }
+-            if (!this._events[type].length) {
+-                delete this._events[type];
+-            }
+-        } else {
+-            delete this._events[type];
++        for (i = 0; i < this._updates.events.length; i++) {
++            var args = this._updates.events[i];
++            this.fire(args[0], args[1]);
++        }
++
++        this._applyClasses(classes, options);
++
++        if (this._updates.changed) {
++            this.fire('change');
+         }
+ 
++        this._resetUpdates();
++
+         return this;
+     },
+ 
+-    /**
+-     * Call a function once when an event has fired
+-     *
+-     * @param {string} type Event type.
+-     * @param {Function} listener Function to be called once when the event is fired
+-     * @returns {Object} `this`
+-     */
+-    once: function(type, listener) {
+-        var wrapper = function(data) {
+-            this.off(type, wrapper);
+-            listener.call(this, data);
+-        }.bind(this);
+-        this.on(type, wrapper);
++    _resetUpdates: function() {
++        this._updates = {
++            events: [],
++            layers: {},
++            sources: {},
++            paintProps: {}
++        };
++    },
++
++    addSource: function(id, source) {
++        this._checkLoaded();
++        if (this.sources[id] !== undefined) {
++            throw new Error('There is already a source with this ID');
++        }
++        if (!Source.is(source) && this._handleErrors(validateStyle.source, 'sources.' + id, source)) return this;
++
++        source = Source.create(source);
++        this.sources[id] = source;
++        source.id = id;
++        source.style = this;
++        source.dispatcher = this.dispatcher;
++        source
++            .on('load', this._forwardSourceEvent)
++            .on('error', this._forwardSourceEvent)
++            .on('change', this._forwardSourceEvent)
++            .on('tile.add', this._forwardTileEvent)
++            .on('tile.load', this._forwardTileEvent)
++            .on('tile.error', this._forwardTileEvent)
++            .on('tile.remove', this._forwardTileEvent)
++            .on('tile.stats', this._forwardTileEvent);
++
++        this._updates.events.push(['source.add', {source: source}]);
++        this._updates.changed = true;
++
+         return this;
+     },
+ 
+     /**
+-     * Fire event of a given string type with the given data object
+-     *
+-     * @param {string} type Event type
+-     * @param {Object} [data] Optional data passed to the event receiver (e.g. {@link #EventData})
+-     * @returns {Object} `this`
++     * Remove a source from this stylesheet, given its id.
++     * @param {string} id id of the source to remove
++     * @returns {Style} this style
++     * @throws {Error} if no source is found with the given ID
++     * @private
+      */
+-    fire: function(type, data) {
+-        if (!this.listens(type)) return this;
+-
+-        data = util.extend({}, data);
+-        util.extend(data, {type: type, target: this});
+-
+-        // make sure adding/removing listeners inside other listeners won't cause infinite loop
+-        var listeners = this._events[type].slice();
++    removeSource: function(id) {
++        this._checkLoaded();
+ 
+-        for (var i = 0; i < listeners.length; i++) {
+-            listeners[i].call(this, data);
++        if (this.sources[id] === undefined) {
++            throw new Error('There is no source with this ID');
+         }
++        var source = this.sources[id];
++        delete this.sources[id];
++        source
++            .off('load', this._forwardSourceEvent)
++            .off('error', this._forwardSourceEvent)
++            .off('change', this._forwardSourceEvent)
++            .off('tile.add', this._forwardTileEvent)
++            .off('tile.load', this._forwardTileEvent)
++            .off('tile.error', this._forwardTileEvent)
++            .off('tile.remove', this._forwardTileEvent)
++            .off('tile.stats', this._forwardTileEvent);
++
++        this._updates.events.push(['source.remove', {source: source}]);
++        this._updates.changed = true;
+ 
+         return this;
+     },
+ 
+     /**
+-     * Check if an event is registered to a type
+-     * @param {string} type Event type
+-     * @returns {boolean} `true` if there is at least one registered listener for events of type `type`
++     * Get a source by id.
++     * @param {string} id id of the desired source
++     * @returns {Object} source
++     * @private
+      */
+-    listens: function(type) {
+-        return !!(this._events && this._events[type]);
+-    }
+-};
++    getSource: function(id) {
++        return this.sources[id];
++    },
+ 
+-module.exports = Evented;
++    /**
++     * Add a layer to the map style. The layer will be inserted before the layer with
++     * ID `before`, or appended if `before` is omitted.
++     * @param {StyleLayer|Object} layer
++     * @param {string=} before  ID of an existing layer to insert before
++     * @fires layer.add
++     * @returns {Style} `this`
++     * @private
++     */
++    addLayer: function(layer, before) {
++        this._checkLoaded();
+ 
+-},{"./util":119}],112:[function(require,module,exports){
+-'use strict';
++        if (!(layer instanceof StyleLayer)) {
++            // this layer is not in the style.layers array, so we pass an impossible array index
++            if (this._handleErrors(validateStyle.layer,
++                    'layers.' + layer.id, layer, false, {arrayIndex: -1})) return this;
+ 
+-module.exports = Glyphs;
++            var refLayer = layer.ref && this.getLayer(layer.ref);
++            layer = StyleLayer.create(layer, refLayer);
++        }
++        this._validateLayer(layer);
+ 
+-function Glyphs(pbf, end) {
+-    this.stacks = pbf.readFields(readFontstacks, [], end);
+-}
++        layer.on('error', this._forwardLayerEvent);
+ 
+-function readFontstacks(tag, stacks, pbf) {
+-    if (tag === 1) {
+-        var fontstack = pbf.readMessage(readFontstack, {glyphs: {}});
+-        stacks.push(fontstack);
+-    }
+-}
++        this._layers[layer.id] = layer;
++        this._order.splice(before ? this._order.indexOf(before) : Infinity, 0, layer.id);
+ 
+-function readFontstack(tag, fontstack, pbf) {
+-    if (tag === 1) fontstack.name = pbf.readString();
+-    else if (tag === 2) fontstack.range = pbf.readString();
+-    else if (tag === 3) {
+-        var glyph = pbf.readMessage(readGlyph, {});
+-        fontstack.glyphs[glyph.id] = glyph;
+-    }
+-}
++        this._updates.allLayers = true;
++        if (layer.source) {
++            this._updates.sources[layer.source] = true;
++        }
++        this._updates.events.push(['layer.add', {layer: layer}]);
+ 
+-function readGlyph(tag, glyph, pbf) {
+-    if (tag === 1) glyph.id = pbf.readVarint();
+-    else if (tag === 2) glyph.bitmap = pbf.readBytes();
+-    else if (tag === 3) glyph.width = pbf.readVarint();
+-    else if (tag === 4) glyph.height = pbf.readVarint();
+-    else if (tag === 5) glyph.left = pbf.readSVarint();
+-    else if (tag === 6) glyph.top = pbf.readSVarint();
+-    else if (tag === 7) glyph.advance = pbf.readVarint();
+-}
++        return this.updateClasses(layer.id);
++    },
+ 
+-},{}],113:[function(require,module,exports){
+-'use strict';
++    /**
++     * Remove a layer from this stylesheet, given its id.
++     * @param {string} id id of the layer to remove
++     * @returns {Style} this style
++     * @throws {Error} if no layer is found with the given ID
++     * @private
++     */
++    removeLayer: function(id) {
++        this._checkLoaded();
+ 
+-module.exports = interpolate;
++        var layer = this._layers[id];
++        if (layer === undefined) {
++            throw new Error('There is no layer with this ID');
++        }
++        for (var i in this._layers) {
++            if (this._layers[i].ref === id) {
++                this.removeLayer(i);
++            }
++        }
+ 
+-function interpolate(a, b, t) {
+-    return (a * (1 - t)) + (b * t);
+-}
++        layer.off('error', this._forwardLayerEvent);
+ 
+-interpolate.number = interpolate;
++        delete this._layers[id];
++        this._order.splice(this._order.indexOf(id), 1);
+ 
+-interpolate.vec2 = function(from, to, t) {
+-    return [
+-        interpolate(from[0], to[0], t),
+-        interpolate(from[1], to[1], t)
+-    ];
+-};
++        this._updates.allLayers = true;
++        this._updates.events.push(['layer.remove', {layer: layer}]);
++        this._updates.changed = true;
+ 
+-/*
+- * Interpolate between two colors given as 4-element arrays.
+- *
+- * @param {Color} from
+- * @param {Color} to
+- * @param {number} t interpolation factor between 0 and 1
+- * @returns {Color} interpolated color
+- */
+-interpolate.color = function(from, to, t) {
+-    return [
+-        interpolate(from[0], to[0], t),
+-        interpolate(from[1], to[1], t),
+-        interpolate(from[2], to[2], t),
+-        interpolate(from[3], to[3], t)
+-    ];
+-};
++        return this;
++    },
+ 
+-interpolate.array = function(from, to, t) {
+-    return from.map(function(d, i) {
+-        return interpolate(d, to[i], t);
+-    });
+-};
++    /**
++     * Return the style layer object with the given `id`.
++     *
++     * @param {string} id - id of the desired layer
++     * @returns {?Object} a layer, if one with the given `id` exists
++     * @private
++     */
++    getLayer: function(id) {
++        return this._layers[id];
++    },
+ 
+-},{}],114:[function(require,module,exports){
+-'use strict';
++    /**
++     * If a layer has a `ref` property that makes it derive some values
++     * from another layer, return that referent layer. Otherwise,
++     * returns the layer itself.
++     * @param {string} id the layer's id
++     * @returns {Layer} the referent layer or the layer itself
++     * @private
++     */
++    getReferentLayer: function(id) {
++        var layer = this.getLayer(id);
++        if (layer.ref) {
++            layer = this.getLayer(layer.ref);
++        }
++        return layer;
++    },
+ 
+-module.exports = {
+-    multiPolygonIntersectsBufferedMultiPoint: multiPolygonIntersectsBufferedMultiPoint,
+-    multiPolygonIntersectsMultiPolygon: multiPolygonIntersectsMultiPolygon,
+-    multiPolygonIntersectsBufferedMultiLine: multiPolygonIntersectsBufferedMultiLine
+-};
++    setLayerZoomRange: function(layerId, minzoom, maxzoom) {
++        this._checkLoaded();
+ 
+-function multiPolygonIntersectsBufferedMultiPoint(multiPolygon, rings, radius) {
+-    for (var j = 0; j < multiPolygon.length; j++) {
+-        var polygon = multiPolygon[j];
+-        for (var i = 0; i < rings.length; i++) {
+-            var ring = rings[i];
+-            for (var k = 0; k < ring.length; k++) {
+-                var point = ring[k];
+-                if (polygonContainsPoint(polygon, point)) return true;
+-                if (pointIntersectsBufferedLine(point, polygon, radius)) return true;
+-            }
++        var layer = this.getReferentLayer(layerId);
++
++        if (layer.minzoom === minzoom && layer.maxzoom === maxzoom) return this;
++
++        if (minzoom != null) {
++            layer.minzoom = minzoom;
+         }
+-    }
+-    return false;
+-}
++        if (maxzoom != null) {
++            layer.maxzoom = maxzoom;
++        }
++        return this._updateLayer(layer);
++    },
+ 
+-function multiPolygonIntersectsMultiPolygon(multiPolygonA, multiPolygonB) {
++    setFilter: function(layerId, filter) {
++        this._checkLoaded();
+ 
+-    if (multiPolygonA.length === 1 && multiPolygonA[0].length === 1) {
+-        return multiPolygonContainsPoint(multiPolygonB, multiPolygonA[0][0]);
+-    }
++        var layer = this.getReferentLayer(layerId);
+ 
+-    for (var m = 0; m < multiPolygonB.length; m++) {
+-        var ring = multiPolygonB[m];
+-        for (var n = 0; n < ring.length; n++) {
+-            if (multiPolygonContainsPoint(multiPolygonA, ring[n])) return true;
+-        }
+-    }
++        if (this._handleErrors(validateStyle.filter, 'layers.' + layer.id + '.filter', filter)) return this;
+ 
+-    for (var j = 0; j < multiPolygonA.length; j++) {
+-        var polygon = multiPolygonA[j];
+-        for (var i = 0; i < polygon.length; i++) {
+-            if (multiPolygonContainsPoint(multiPolygonB, polygon[i])) return true;
+-        }
++        if (util.deepEqual(layer.filter, filter)) return this;
++        layer.filter = util.clone(filter);
+ 
+-        for (var k = 0; k < multiPolygonB.length; k++) {
+-            if (lineIntersectsLine(polygon, multiPolygonB[k])) return true;
+-        }
+-    }
++        return this._updateLayer(layer);
++    },
+ 
+-    return false;
+-}
++    /**
++     * Get a layer's filter object
++     * @param {string} layer the layer to inspect
++     * @returns {*} the layer's filter, if any
++     * @private
++     */
++    getFilter: function(layer) {
++        return this.getReferentLayer(layer).filter;
++    },
+ 
+-function multiPolygonIntersectsBufferedMultiLine(multiPolygon, multiLine, radius) {
+-    for (var i = 0; i < multiLine.length; i++) {
+-        var line = multiLine[i];
++    setLayoutProperty: function(layerId, name, value) {
++        this._checkLoaded();
+ 
+-        for (var j = 0; j < multiPolygon.length; j++) {
+-            var polygon = multiPolygon[j];
++        var layer = this.getReferentLayer(layerId);
+ 
+-            if (polygon.length >= 3) {
+-                for (var k = 0; k < line.length; k++) {
+-                    if (polygonContainsPoint(polygon, line[k])) return true;
+-                }
+-            }
++        if (util.deepEqual(layer.getLayoutProperty(name), value)) return this;
+ 
+-            if (lineIntersectsBufferedLine(polygon, line, radius)) return true;
+-        }
+-    }
+-    return false;
+-}
++        layer.setLayoutProperty(name, value);
++        return this._updateLayer(layer);
++    },
+ 
+-function lineIntersectsBufferedLine(lineA, lineB, radius) {
++    /**
++     * Get a layout property's value from a given layer
++     * @param {string} layer the layer to inspect
++     * @param {string} name the name of the layout property
++     * @returns {*} the property value
++     * @private
++     */
++    getLayoutProperty: function(layer, name) {
++        return this.getReferentLayer(layer).getLayoutProperty(name);
++    },
++
++    setPaintProperty: function(layerId, name, value, klass) {
++        this._checkLoaded();
+ 
+-    if (lineA.length > 1) {
+-        if (lineIntersectsLine(lineA, lineB)) return true;
++        var layer = this.getLayer(layerId);
+ 
+-        // Check whether any point in either line is within radius of the other line
+-        for (var j = 0; j < lineB.length; j++) {
+-            if (pointIntersectsBufferedLine(lineB[j], lineA, radius)) return true;
+-        }
+-    }
++        if (util.deepEqual(layer.getPaintProperty(name, klass), value)) return this;
+ 
+-    for (var k = 0; k < lineA.length; k++) {
+-        if (pointIntersectsBufferedLine(lineA[k], lineB, radius)) return true;
+-    }
++        var wasFeatureConstant = layer.isPaintValueFeatureConstant(name);
++        layer.setPaintProperty(name, value, klass);
+ 
+-    return false;
+-}
++        var isFeatureConstant = !(StyleFunction.isFunctionDefinition(value) && value.property !== '$zoom' && value.property !== undefined);
+ 
+-function lineIntersectsLine(lineA, lineB) {
+-    for (var i = 0; i < lineA.length - 1; i++) {
+-        var a0 = lineA[i];
+-        var a1 = lineA[i + 1];
+-        for (var j = 0; j < lineB.length - 1; j++) {
+-            var b0 = lineB[j];
+-            var b1 = lineB[j + 1];
+-            if (lineSegmentIntersectsLineSegment(a0, a1, b0, b1)) return true;
++        if (!isFeatureConstant || !wasFeatureConstant) {
++            this._updates.layers[layerId] = true;
++            if (layer.source) {
++                this._updates.sources[layer.source] = true;
++            }
+         }
+-    }
+-    return false;
+-}
+ 
++        return this.updateClasses(layerId, name);
++    },
+ 
+-// http://bryceboe.com/2006/10/23/line-segment-intersection-algorithm/
+-function isCounterClockwise(a, b, c) {
+-    return (c.y - a.y) * (b.x - a.x) > (b.y - a.y) * (c.x - a.x);
+-}
+-
+-function lineSegmentIntersectsLineSegment(a0, a1, b0, b1) {
+-    return isCounterClockwise(a0, b0, b1) !== isCounterClockwise(a1, b0, b1) &&
+-        isCounterClockwise(a0, a1, b0) !== isCounterClockwise(a0, a1, b1);
+-}
++    getPaintProperty: function(layer, name, klass) {
++        return this.getLayer(layer).getPaintProperty(name, klass);
++    },
+ 
+-function pointIntersectsBufferedLine(p, line, radius) {
+-    var radiusSquared = radius * radius;
++    updateClasses: function (layerId, paintName) {
++        this._updates.changed = true;
++        if (!layerId) {
++            this._updates.allPaintProps = true;
++        } else {
++            var props = this._updates.paintProps;
++            if (!props[layerId]) props[layerId] = {};
++            props[layerId][paintName || 'all'] = true;
++        }
++        return this;
++    },
+ 
+-    if (line.length === 1) return p.distSqr(line[0]) < radiusSquared;
++    serialize: function() {
++        return util.filterObject({
++            version: this.stylesheet.version,
++            name: this.stylesheet.name,
++            metadata: this.stylesheet.metadata,
++            center: this.stylesheet.center,
++            zoom: this.stylesheet.zoom,
++            bearing: this.stylesheet.bearing,
++            pitch: this.stylesheet.pitch,
++            sprite: this.stylesheet.sprite,
++            glyphs: this.stylesheet.glyphs,
++            transition: this.stylesheet.transition,
++            sources: util.mapObject(this.sources, function(source) {
++                return source.serialize();
++            }),
++            layers: this._order.map(function(id) {
++                return this._layers[id].serialize();
++            }, this)
++        }, function(value) { return value !== undefined; });
++    },
+ 
+-    for (var i = 1; i < line.length; i++) {
+-        // Find line segments that have a distance <= radius^2 to p
+-        // In that case, we treat the line as "containing point p".
+-        var v = line[i - 1], w = line[i];
+-        if (distToSegmentSquared(p, v, w) < radiusSquared) return true;
+-    }
+-    return false;
+-}
++    _updateLayer: function (layer) {
++        this._updates.layers[layer.id] = true;
++        if (layer.source) {
++            this._updates.sources[layer.source] = true;
++        }
++        this._updates.changed = true;
++        return this;
++    },
+ 
+-// Code from http://stackoverflow.com/a/1501725/331379.
+-function distToSegmentSquared(p, v, w) {
+-    var l2 = v.distSqr(w);
+-    if (l2 === 0) return p.distSqr(v);
+-    var t = ((p.x - v.x) * (w.x - v.x) + (p.y - v.y) * (w.y - v.y)) / l2;
+-    if (t < 0) return p.distSqr(v);
+-    if (t > 1) return p.distSqr(w);
+-    return p.distSqr(w.sub(v)._mult(t)._add(v));
+-}
++    _flattenRenderedFeatures: function(sourceResults) {
++        var features = [];
++        for (var l = this._order.length - 1; l >= 0; l--) {
++            var layerID = this._order[l];
++            for (var s = 0; s < sourceResults.length; s++) {
++                var layerFeatures = sourceResults[s][layerID];
++                if (layerFeatures) {
++                    for (var f = 0; f < layerFeatures.length; f++) {
++                        features.push(layerFeatures[f]);
++                    }
++                }
++            }
++        }
++        return features;
++    },
+ 
+-// point in polygon ray casting algorithm
+-function multiPolygonContainsPoint(rings, p) {
+-    var c = false,
+-        ring, p1, p2;
++    queryRenderedFeatures: function(queryGeometry, params, zoom, bearing) {
++        if (params && params.filter) {
++            this._handleErrors(validateStyle.filter, 'queryRenderedFeatures.filter', params.filter, true);
++        }
+ 
+-    for (var k = 0; k < rings.length; k++) {
+-        ring = rings[k];
+-        for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
+-            p1 = ring[i];
+-            p2 = ring[j];
+-            if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
+-                c = !c;
++        var sourceResults = [];
++        for (var id in this.sources) {
++            var source = this.sources[id];
++            if (source.queryRenderedFeatures) {
++                sourceResults.push(source.queryRenderedFeatures(queryGeometry, params, zoom, bearing));
+             }
+         }
+-    }
+-    return c;
+-}
++        return this._flattenRenderedFeatures(sourceResults);
++    },
+ 
+-function polygonContainsPoint(ring, p) {
+-    var c = false;
+-    for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
+-        var p1 = ring[i];
+-        var p2 = ring[j];
+-        if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
+-            c = !c;
++    querySourceFeatures: function(sourceID, params) {
++        if (params && params.filter) {
++            this._handleErrors(validateStyle.filter, 'querySourceFeatures.filter', params.filter, true);
+         }
+-    }
+-    return c;
+-}
++        var source = this.getSource(sourceID);
++        return source && source.querySourceFeatures ? source.querySourceFeatures(params) : [];
++    },
+ 
+-},{}],115:[function(require,module,exports){
+-'use strict';
++    _handleErrors: function(validate, key, value, throws, props) {
++        var action = throws ? validateStyle.throwErrors : validateStyle.emitErrors;
++        var result = validate.call(validateStyle, util.extend({
++            key: key,
++            style: this.serialize(),
++            value: value,
++            styleSpec: styleSpec
++        }, props));
++        return action.call(validateStyle, this, result);
++    },
+ 
+-module.exports = LRUCache;
++    _remove: function() {
++        this.dispatcher.remove();
++    },
+ 
+-/**
+- * A [least-recently-used cache](http://en.wikipedia.org/wiki/Cache_algorithms)
+- * with hash lookup made possible by keeping a list of keys in parallel to
+- * an array of dictionary of values
+- *
+- * @param {number} max number of permitted values
+- * @param {Function} onRemove callback called with items when they expire
+- * @private
+- */
+-function LRUCache(max, onRemove) {
+-    this.max = max;
+-    this.onRemove = onRemove;
+-    this.reset();
+-}
++    _reloadSource: function(id) {
++        this.sources[id].reload();
++    },
+ 
+-/**
+- * Clear the cache
+- *
+- * @returns {LRUCache} this cache
+- * @private
+- */
+-LRUCache.prototype.reset = function() {
+-    for (var key in this.data) {
+-        this.onRemove(this.data[key]);
+-    }
++    _updateSources: function(transform) {
++        for (var id in this.sources) {
++            this.sources[id].update(transform);
++        }
++    },
+ 
+-    this.data = {};
+-    this.order = [];
++    _redoPlacement: function() {
++        for (var id in this.sources) {
++            if (this.sources[id].redoPlacement) this.sources[id].redoPlacement();
++        }
++    },
+ 
+-    return this;
+-};
++    _forwardSourceEvent: function(e) {
++        this.fire('source.' + e.type, util.extend({source: e.target}, e));
++    },
+ 
+-/**
+- * Add a key, value combination to the cache, trimming its size if this pushes
+- * it over max length.
+- *
+- * @param {string} key lookup key for the item
+- * @param {*} data any value
+- *
+- * @returns {LRUCache} this cache
+- * @private
+- */
+-LRUCache.prototype.add = function(key, data) {
++    _forwardTileEvent: function(e) {
++        this.fire(e.type, util.extend({source: e.target}, e));
++    },
+ 
+-    if (this.has(key)) {
+-        this.order.splice(this.order.indexOf(key), 1);
+-        this.data[key] = data;
+-        this.order.push(key);
++    _forwardLayerEvent: function(e) {
++        this.fire('layer.' + e.type, util.extend({layer: {id: e.target.id}}, e));
++    },
+ 
+-    } else {
+-        this.data[key] = data;
+-        this.order.push(key);
++    // Callbacks from web workers
+ 
+-        if (this.order.length > this.max) {
+-            var removedData = this.get(this.order[0]);
+-            if (removedData) this.onRemove(removedData);
++    'get sprite json': function(params, callback) {
++        var sprite = this.sprite;
++        if (sprite.loaded()) {
++            callback(null, { sprite: sprite.data, retina: sprite.retina });
++        } else {
++            sprite.on('load', function() {
++                callback(null, { sprite: sprite.data, retina: sprite.retina });
++            });
+         }
+-    }
+-
+-    return this;
+-};
++    },
+ 
+-/**
+- * Determine whether the value attached to `key` is present
+- *
+- * @param {string} key the key to be looked-up
+- * @returns {boolean} whether the cache has this value
+- * @private
+- */
+-LRUCache.prototype.has = function(key) {
+-    return key in this.data;
+-};
++    'get icons': function(params, callback) {
++        var sprite = this.sprite;
++        var spriteAtlas = this.spriteAtlas;
++        if (sprite.loaded()) {
++            spriteAtlas.setSprite(sprite);
++            spriteAtlas.addIcons(params.icons, callback);
++        } else {
++            sprite.on('load', function() {
++                spriteAtlas.setSprite(sprite);
++                spriteAtlas.addIcons(params.icons, callback);
++            });
++        }
++    },
+ 
+-/**
+- * List all keys in the cache
+- *
+- * @returns {Array<string>} an array of keys in this cache.
+- * @private
+- */
+-LRUCache.prototype.keys = function() {
+-    return this.order;
+-};
++    'get glyphs': function(params, callback) {
++        var stacks = params.stacks,
++            remaining = Object.keys(stacks).length,
++            allGlyphs = {};
+ 
+-/**
+- * Get the value attached to a specific key. If the key is not found,
+- * returns `null`
+- *
+- * @param {string} key the key to look up
+- * @returns {*} the data, or null if it isn't found
+- * @private
+- */
+-LRUCache.prototype.get = function(key) {
+-    if (!this.has(key)) { return null; }
++        for (var fontName in stacks) {
++            this.glyphSource.getSimpleGlyphs(fontName, stacks[fontName], params.uid, done);
++        }
+ 
+-    var data = this.data[key];
++        function done(err, glyphs, fontName) {
++            if (err) console.error(err);
+ 
+-    delete this.data[key];
+-    this.order.splice(this.order.indexOf(key), 1);
++            allGlyphs[fontName] = glyphs;
++            remaining--;
+ 
+-    return data;
+-};
++            if (remaining === 0)
++                callback(null, allGlyphs);
++        }
++    }
++});
+ 
+-/**
+- * Change the max size of the cache.
+- *
+- * @param {number} max the max size of the cache
+- * @returns {LRUCache} this cache
+- * @private
+- */
+-LRUCache.prototype.setMaxSize = function(max) {
+-    this.max = max;
++},{"../render/line_atlas":90,"../source/source":99,"../symbol/glyph_source":131,"../symbol/sprite_atlas":136,"../util/ajax":154,"../util/browser":155,"../util/dispatcher":157,"../util/evented":161,"../util/mapbox":166,"../util/util":169,"./animation_loop":107,"./image_sprite":108,"./style_function":112,"./style_layer":113,"./style_spec":120,"./validate_style":122}],111:[function(require,module,exports){
++'use strict';
+ 
+-    while (this.order.length > this.max) {
+-        var removedData = this.get(this.order[0]);
+-        if (removedData) this.onRemove(removedData);
+-    }
++var MapboxGLFunction = require('./style_function');
++var parseColor = require('./parse_color');
++var util = require('../util/util');
+ 
+-    return this;
+-};
++module.exports = StyleDeclaration;
+ 
+-},{}],116:[function(require,module,exports){
+-'use strict';
++function StyleDeclaration(reference, value) {
++    this.type = reference.type;
++    this.transitionable = reference.transition;
++    this.value = util.clone(value);
++    this.isFunction = !!value.stops;
+ 
+-var config = require('./config');
+-var browser = require('./browser');
++    // immutable representation of value. used for comparison
++    this.json = JSON.stringify(this.value);
+ 
+-function normalizeURL(url, pathPrefix, accessToken) {
+-    accessToken = accessToken || config.ACCESS_TOKEN;
++    var parsedValue = this.type === 'color' ? parseColor(this.value) : value;
++    this.calculate = MapboxGLFunction[reference.function || 'piecewise-constant'](parsedValue);
++    this.isFeatureConstant = this.calculate.isFeatureConstant;
++    this.isZoomConstant = this.calculate.isZoomConstant;
+ 
+-    if (!accessToken && config.REQUIRE_ACCESS_TOKEN) {
+-        throw new Error('An API access token is required to use Mapbox GL. ' +
+-            'See https://www.mapbox.com/developers/api/#access-tokens');
++    if (reference.function === 'piecewise-constant' && reference.transition) {
++        this.calculate = transitioned(this.calculate);
+     }
+ 
+-    url = url.replace(/^mapbox:\/\//, config.API_URL + pathPrefix);
+-    url += url.indexOf('?') !== -1 ? '&access_token=' : '?access_token=';
+-
+-    if (config.REQUIRE_ACCESS_TOKEN) {
+-        if (accessToken[0] === 's') {
+-            throw new Error('Use a public access token (pk.*) with Mapbox GL JS, not a secret access token (sk.*). ' +
+-                'See https://www.mapbox.com/developers/api/#access-tokens');
++    if (!this.isFeatureConstant && !this.isZoomConstant) {
++        this.stopZoomLevels = [];
++        var interpolationAmountStops = [];
++        var stops = this.value.stops;
++        for (var i = 0; i < this.value.stops.length; i++) {
++            var zoom = stops[i][0].zoom;
++            if (this.stopZoomLevels.indexOf(zoom) < 0) {
++                this.stopZoomLevels.push(zoom);
++                interpolationAmountStops.push([zoom, interpolationAmountStops.length]);
++            }
+         }
+ 
+-        url += accessToken;
++        this.calculateInterpolationT = MapboxGLFunction.interpolated({
++            stops: interpolationAmountStops,
++            base: value.base
++        });
+     }
+-
+-    return url;
+ }
+ 
+-module.exports.normalizeStyleURL = function(url, accessToken) {
+-    if (!url.match(/^mapbox:\/\/styles\//))
+-        return url;
+-
+-    var split = url.split('/');
+-    var user = split[3];
+-    var style = split[4];
+-    var draft = split[5] ? '/draft' : '';
+-    return normalizeURL('mapbox://' + user + '/' + style + draft, '/styles/v1/', accessToken);
+-};
++function transitioned(calculate) {
++    return function(globalProperties, featureProperties) {
++        var z = globalProperties.zoom;
++        var zh = globalProperties.zoomHistory;
++        var duration = globalProperties.duration;
+ 
+-module.exports.normalizeSourceURL = function(url, accessToken) {
+-    if (!url.match(/^mapbox:\/\//))
+-        return url;
++        var fraction = z % 1;
++        var t = Math.min((Date.now() - zh.lastIntegerZoomTime) / duration, 1);
++        var fromScale = 1;
++        var toScale = 1;
++        var mix, from, to;
+ 
+-    // TileJSON requests need a secure flag appended to their URLs so
+-    // that the server knows to send SSL-ified resource references.
+-    return normalizeURL(url + '.json', '/v4/', accessToken) + '&secure';
+-};
++        if (z > zh.lastIntegerZoom) {
++            mix = fraction + (1 - fraction) * t;
++            fromScale *= 2;
++            from = calculate({zoom: z - 1}, featureProperties);
++            to = calculate({zoom: z}, featureProperties);
++        } else {
++            mix = 1 - (1 - t) * fraction;
++            to = calculate({zoom: z}, featureProperties);
++            from = calculate({zoom: z + 1}, featureProperties);
++            fromScale /= 2;
++        }
+ 
+-module.exports.normalizeGlyphsURL = function(url, accessToken) {
+-    if (!url.match(/^mapbox:\/\//))
+-        return url;
++        return {
++            from: from,
++            fromScale: fromScale,
++            to: to,
++            toScale: toScale,
++            t: mix
++        };
++    };
++}
+ 
+-    var user = url.split('/')[3];
+-    return normalizeURL('mapbox://' + user + '/{fontstack}/{range}.pbf', '/fonts/v1/', accessToken);
+-};
++},{"../util/util":169,"./parse_color":109,"./style_function":112}],112:[function(require,module,exports){
++'use strict';
+ 
+-module.exports.normalizeSpriteURL = function(url, format, ext, accessToken) {
+-    if (!url.match(/^mapbox:\/\/sprites\//))
+-        return url + format + ext;
++var MapboxGLFunction = require('mapbox-gl-function');
+ 
+-    var split = url.split('/');
+-    var user = split[3];
+-    var style = split[4];
+-    var draft = split[5] ? '/draft' : '';
+-    return normalizeURL('mapbox://' + user + '/' + style + draft + '/sprite' + format + ext, '/styles/v1/', accessToken);
++exports.interpolated = function(parameters) {
++    var inner = MapboxGLFunction.interpolated(parameters);
++    var outer = function(globalProperties, featureProperties) {
++        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
++    };
++    outer.isFeatureConstant = inner.isFeatureConstant;
++    outer.isZoomConstant = inner.isZoomConstant;
++    return outer;
+ };
+ 
+-module.exports.normalizeTileURL = function(url, sourceUrl, tileSize) {
+-    if (!sourceUrl || !sourceUrl.match(/^mapbox:\/\//))
+-        return url;
+-
+-    // The v4 mapbox tile API supports 512x512 image tiles only when @2x
+-    // is appended to the tile URL. If `tileSize: 512` is specified for
+-    // a Mapbox raster source force the @2x suffix even if a non hidpi
+-    // device.
+-    url = url.replace(/([?&]access_token=)tk\.[^&]+/, '$1' + config.ACCESS_TOKEN);
+-    var extension = browser.supportsWebp ? 'webp' : '$1';
+-    return url.replace(/\.((?:png|jpg)\d*)(?=$|\?)/, browser.devicePixelRatio >= 2 || tileSize === 512 ? '@2x.' + extension : '.' + extension);
++exports['piecewise-constant'] = function(parameters) {
++    var inner = MapboxGLFunction['piecewise-constant'](parameters);
++    var outer = function(globalProperties, featureProperties) {
++        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
++    };
++    outer.isFeatureConstant = inner.isFeatureConstant;
++    outer.isZoomConstant = inner.isZoomConstant;
++    return outer;
+ };
+ 
+-},{"./browser":105,"./config":109}],117:[function(require,module,exports){
++exports.isFunctionDefinition = MapboxGLFunction.isFunctionDefinition;
++
++},{"mapbox-gl-function":40}],113:[function(require,module,exports){
+ 'use strict';
+ 
+-// Note: all "sizes" are measured in bytes
++var util = require('../util/util');
++var StyleTransition = require('./style_transition');
++var StyleDeclaration = require('./style_declaration');
++var styleSpec = require('./style_spec');
++var validateStyle = require('./validate_style');
++var parseColor = require('./parse_color');
++var Evented = require('../util/evented');
+ 
+-var assert = require('assert');
++module.exports = StyleLayer;
+ 
+-module.exports = StructArrayType;
++var TRANSITION_SUFFIX = '-transition';
+ 
+-var viewTypes = {
+-    'Int8': Int8Array,
+-    'Uint8': Uint8Array,
+-    'Uint8Clamped': Uint8ClampedArray,
+-    'Int16': Int16Array,
+-    'Uint16': Uint16Array,
+-    'Int32': Int32Array,
+-    'Uint32': Uint32Array,
+-    'Float32': Float32Array,
+-    'Float64': Float64Array
++StyleLayer.create = function(layer, refLayer) {
++    var Classes = {
++        background: require('./style_layer/background_style_layer'),
++        circle: require('./style_layer/circle_style_layer'),
++        fill: require('./style_layer/fill_style_layer'),
++        line: require('./style_layer/line_style_layer'),
++        raster: require('./style_layer/raster_style_layer'),
++        symbol: require('./style_layer/symbol_style_layer')
++    };
++    return new Classes[(refLayer || layer).type](layer, refLayer);
+ };
+ 
+-/**
+- * @typedef StructMember
+- * @private
+- * @property {string} name
+- * @property {string} type
+- * @property {number} components
+- */
+-
+-var structArrayTypeCache = {};
++function StyleLayer(layer, refLayer) {
++    this.set(layer, refLayer);
++}
+ 
+-/**
+- * `StructArrayType` is used to create new `StructArray` types.
+- *
+- * `StructArray` provides an abstraction over `ArrayBuffer` and `TypedArray` making it behave like
+- * an array of typed structs. A StructArray is comprised of elements. Each element has a set of
+- * members that are defined when the `StructArrayType` is created.
+- *
+- * StructArrays useful for creating large arrays that:
+- * - can be transferred from workers as a Transferable object
+- * - can be copied cheaply
+- * - use less memory for lower-precision members
+- * - can be used as buffers in WebGL.
+- *
+- * @class StructArrayType
+- * @param {Array.<StructMember>}
+- * @param options
+- * @param {number} options.alignment Use `4` to align members to 4 byte boundaries. Default is 1.
+- *
+- * @example
+- *
+- * var PointArrayType = new StructArrayType({
+- *  members: [
+- *      { type: 'Int16', name: 'x' },
+- *      { type: 'Int16', name: 'y' }
+- *  ]});
+- *
+- *  var pointArray = new PointArrayType();
+- *  pointArray.emplaceBack(10, 15);
+- *  pointArray.emplaceBack(20, 35);
+- *
+- *  point = pointArray.get(0);
+- *  assert(point.x === 10);
+- *  assert(point.y === 15);
+- *
+- * @private
+- */
+-function StructArrayType(options) {
++StyleLayer.prototype = util.inherit(Evented, {
+ 
+-    var key = JSON.stringify(options);
+-    if (structArrayTypeCache[key]) {
+-        return structArrayTypeCache[key];
+-    }
++    set: function(layer, refLayer) {
++        this.id = layer.id;
++        this.ref = layer.ref;
++        this.metadata = layer.metadata;
++        this.type = (refLayer || layer).type;
++        this.source = (refLayer || layer).source;
++        this.sourceLayer = (refLayer || layer)['source-layer'];
++        this.minzoom = (refLayer || layer).minzoom;
++        this.maxzoom = (refLayer || layer).maxzoom;
++        this.filter = (refLayer || layer).filter;
+ 
+-    if (options.alignment === undefined) options.alignment = 1;
++        this.paint = {};
++        this.layout = {};
+ 
+-    function StructType() {
+-        Struct.apply(this, arguments);
+-    }
++        this._paintSpecifications = styleSpec['paint_' + this.type];
++        this._layoutSpecifications = styleSpec['layout_' + this.type];
+ 
+-    StructType.prototype = Object.create(Struct.prototype);
++        this._paintTransitions = {}; // {[propertyName]: StyleTransition}
++        this._paintTransitionOptions = {}; // {[className]: {[propertyName]: { duration:Number, delay:Number }}}
++        this._paintDeclarations = {}; // {[className]: {[propertyName]: StyleDeclaration}}
++        this._layoutDeclarations = {}; // {[propertyName]: StyleDeclaration}
++        this._layoutFunctions = {}; // {[propertyName]: Boolean}
+ 
+-    var offset = 0;
+-    var maxSize = 0;
+-    var usedTypes = ['Uint8'];
++        var paintName, layoutName;
+ 
+-    StructType.prototype.members = options.members.map(function(member) {
+-        member = {
+-            name: member.name,
+-            type: member.type,
+-            components: member.components || 1
+-        };
++        // Resolve paint declarations
++        for (var key in layer) {
++            var match = key.match(/^paint(?:\.(.*))?$/);
++            if (match) {
++                var klass = match[1] || '';
++                for (paintName in layer[key]) {
++                    this.setPaintProperty(paintName, layer[key][paintName], klass);
++                }
++            }
++        }
+ 
+-        assert(member.name.length);
+-        assert(member.type in viewTypes);
++        // Resolve layout declarations
++        if (this.ref) {
++            this._layoutDeclarations = refLayer._layoutDeclarations;
++        } else {
++            for (layoutName in layer.layout) {
++                this.setLayoutProperty(layoutName, layer.layout[layoutName]);
++            }
++        }
+ 
+-        if (usedTypes.indexOf(member.type) < 0) usedTypes.push(member.type);
++        // set initial layout/paint values
++        for (paintName in this._paintSpecifications) {
++            this.paint[paintName] = this.getPaintValue(paintName);
++        }
++        for (layoutName in this._layoutSpecifications) {
++            this._updateLayoutValue(layoutName);
++        }
++    },
+ 
+-        var typeSize = sizeOf(member.type);
+-        maxSize = Math.max(maxSize, typeSize);
+-        member.offset = offset = align(offset, Math.max(options.alignment, typeSize));
++    setLayoutProperty: function(name, value) {
+ 
+-        for (var c = 0; c < member.components; c++) {
+-            Object.defineProperty(StructType.prototype, member.name + (member.components === 1 ? '' : c), {
+-                get: createGetter(member, c),
+-                set: createSetter(member, c)
+-            });
++        if (value == null) {
++            delete this._layoutDeclarations[name];
++        } else {
++            var key = 'layers.' + this.id + '.layout.' + name;
++            if (this._handleErrors(validateStyle.layoutProperty, key, name, value)) return;
++            this._layoutDeclarations[name] = new StyleDeclaration(this._layoutSpecifications[name], value);
+         }
++        this._updateLayoutValue(name);
++    },
+ 
+-        offset += typeSize * member.components;
++    getLayoutProperty: function(name) {
++        return (
++            this._layoutDeclarations[name] &&
++            this._layoutDeclarations[name].value
++        );
++    },
+ 
+-        return member;
+-    });
++    getLayoutValue: function(name, globalProperties, featureProperties) {
++        var specification = this._layoutSpecifications[name];
++        var declaration = this._layoutDeclarations[name];
+ 
+-    StructType.prototype.alignment = options.alignment;
+-    StructType.prototype.size = align(offset, Math.max(maxSize, options.alignment));
++        if (declaration) {
++            return declaration.calculate(globalProperties, featureProperties);
++        } else {
++            return specification.default;
++        }
++    },
+ 
+-    function StructArrayType() {
+-        StructArray.apply(this, arguments);
+-        this.members = StructType.prototype.members;
+-    }
++    setPaintProperty: function(name, value, klass) {
++        var validateStyleKey = 'layers.' + this.id + (klass ? '["paint.' + klass + '"].' : '.paint.') + name;
+ 
+-    StructArrayType.serialize = serializeStructArrayType;
++        if (util.endsWith(name, TRANSITION_SUFFIX)) {
++            if (!this._paintTransitionOptions[klass || '']) {
++                this._paintTransitionOptions[klass || ''] = {};
++            }
++            if (value === null || value === undefined) {
++                delete this._paintTransitionOptions[klass || ''][name];
++            } else {
++                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
++                this._paintTransitionOptions[klass || ''][name] = value;
++            }
++        } else {
++            if (!this._paintDeclarations[klass || '']) {
++                this._paintDeclarations[klass || ''] = {};
++            }
++            if (value === null || value === undefined) {
++                delete this._paintDeclarations[klass || ''][name];
++            } else {
++                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
++                this._paintDeclarations[klass || ''][name] = new StyleDeclaration(this._paintSpecifications[name], value);
++            }
++        }
++    },
+ 
+-    StructArrayType.prototype = Object.create(StructArray.prototype);
+-    StructArrayType.prototype.StructType = StructType;
+-    StructArrayType.prototype.bytesPerElement = StructType.prototype.size;
+-    StructArrayType.prototype.emplaceBack = createEmplaceBack(StructType.prototype.members, StructType.prototype.size);
+-    StructArrayType.prototype._usedTypes = usedTypes;
++    getPaintProperty: function(name, klass) {
++        klass = klass || '';
++        if (util.endsWith(name, TRANSITION_SUFFIX)) {
++            return (
++                this._paintTransitionOptions[klass] &&
++                this._paintTransitionOptions[klass][name]
++            );
++        } else {
++            return (
++                this._paintDeclarations[klass] &&
++                this._paintDeclarations[klass][name] &&
++                this._paintDeclarations[klass][name].value
++            );
++        }
++    },
+ 
++    getPaintValue: function(name, globalProperties, featureProperties) {
++        var specification = this._paintSpecifications[name];
++        var transition = this._paintTransitions[name];
+ 
+-    structArrayTypeCache[key] = StructArrayType;
++        if (transition) {
++            return transition.calculate(globalProperties, featureProperties);
++        } else if (specification.type === 'color' && specification.default) {
++            return parseColor(specification.default);
++        } else {
++            return specification.default;
++        }
++    },
+ 
+-    return StructArrayType;
+-}
++    getPaintValueStopZoomLevels: function(name) {
++        var transition = this._paintTransitions[name];
++        if (transition) {
++            return transition.declaration.stopZoomLevels;
++        } else {
++            return [];
++        }
++    },
+ 
+-/**
+- * Serialize the StructArray type. This serializes the *type* not an instance of the type.
+- * @private
+- */
+-function serializeStructArrayType() {
+-    return {
+-        members: this.prototype.StructType.prototype.members,
+-        alignment: this.prototype.StructType.prototype.alignment,
+-        bytesPerElement: this.prototype.bytesPerElement
+-    };
+-}
++    getPaintInterpolationT: function(name, zoom) {
++        var transition = this._paintTransitions[name];
++        return transition.declaration.calculateInterpolationT({ zoom: zoom });
++    },
+ 
++    isPaintValueFeatureConstant: function(name) {
++        var transition = this._paintTransitions[name];
+ 
+-function align(offset, size) {
+-    return Math.ceil(offset / size) * size;
+-}
++        if (transition) {
++            return transition.declaration.isFeatureConstant;
++        } else {
++            return true;
++        }
++    },
+ 
+-function sizeOf(type) {
+-    return viewTypes[type].BYTES_PER_ELEMENT;
+-}
++    isPaintValueZoomConstant: function(name) {
++        var transition = this._paintTransitions[name];
+ 
+-function getArrayViewName(type) {
+-    return type.toLowerCase();
+-}
++        if (transition) {
++            return transition.declaration.isZoomConstant;
++        } else {
++            return true;
++        }
++    },
+ 
+ 
+-/*
+- * > I saw major perf gains by shortening the source of these generated methods (i.e. renaming
+- * > elementIndex to i) (likely due to v8 inlining heuristics).
+- * - lucaswoj
+- */
+-function createEmplaceBack(members, bytesPerElement) {
+-    var usedTypeSizes = [];
+-    var argNames = [];
+-    var body = '' +
+-    'var i = this.length;\n' +
+-    'this.resize(this.length + 1);\n';
++    isHidden: function(zoom) {
++        if (this.minzoom && zoom < this.minzoom) return true;
++        if (this.maxzoom && zoom >= this.maxzoom) return true;
++        if (this.layout['visibility'] === 'none') return true;
++        if (this.paint[this.type + '-opacity'] === 0) return true;
++        return false;
++    },
+ 
+-    for (var m = 0; m < members.length; m++) {
+-        var member = members[m];
+-        var size = sizeOf(member.type);
++    updatePaintTransitions: function(classes, options, globalOptions, animationLoop) {
++        var declarations = util.extend({}, this._paintDeclarations['']);
++        for (var i = 0; i < classes.length; i++) {
++            util.extend(declarations, this._paintDeclarations[classes[i]]);
++        }
+ 
+-        if (usedTypeSizes.indexOf(size) < 0) {
+-            usedTypeSizes.push(size);
+-            body += 'var o' + size.toFixed(0) + ' = i * ' + (bytesPerElement / size).toFixed(0) + ';\n';
++        var name;
++        for (name in declarations) { // apply new declarations
++            this._applyPaintDeclaration(name, declarations[name], options, globalOptions, animationLoop);
++        }
++        for (name in this._paintTransitions) {
++            if (!(name in declarations)) // apply removed declarations
++                this._applyPaintDeclaration(name, null, options, globalOptions, animationLoop);
+         }
++    },
+ 
+-        for (var c = 0; c < member.components; c++) {
+-            var argName = 'v' + argNames.length;
+-            var index = 'o' + size.toFixed(0) + ' + ' + (member.offset / size + c).toFixed(0);
+-            body += 'this.' + getArrayViewName(member.type) + '[' + index + '] = ' + argName + ';\n';
+-            argNames.push(argName);
++    updatePaintTransition: function(name, classes, options, globalOptions, animationLoop) {
++        var declaration = this._paintDeclarations[''][name];
++        for (var i = 0; i < classes.length; i++) {
++            var classPaintDeclarations = this._paintDeclarations[classes[i]];
++            if (classPaintDeclarations && classPaintDeclarations[name]) {
++                declaration = classPaintDeclarations[name];
++            }
+         }
+-    }
++        this._applyPaintDeclaration(name, declaration, options, globalOptions, animationLoop);
++    },
+ 
+-    body += 'return i;';
++    // update all zoom-dependent layout/paint values
++    recalculate: function(zoom, zoomHistory) {
++        for (var paintName in this._paintTransitions) {
++            this.paint[paintName] = this.getPaintValue(paintName, {zoom: zoom, zoomHistory: zoomHistory});
++        }
++        for (var layoutName in this._layoutFunctions) {
++            this.layout[layoutName] = this.getLayoutValue(layoutName, {zoom: zoom, zoomHistory: zoomHistory});
++        }
++    },
+ 
+-    return new Function(argNames, body);
+-}
++    serialize: function(options) {
++        var output = {
++            'id': this.id,
++            'ref': this.ref,
++            'metadata': this.metadata,
++            'minzoom': this.minzoom,
++            'maxzoom': this.maxzoom
++        };
+ 
+-function createMemberComponentString(member, component) {
+-    var elementOffset = 'this._pos' + sizeOf(member.type).toFixed(0);
+-    var componentOffset = (member.offset / sizeOf(member.type) + component).toFixed(0);
+-    var index = elementOffset + ' + ' + componentOffset;
+-    return 'this._structArray.' + getArrayViewName(member.type) + '[' + index + ']';
++        for (var klass in this._paintDeclarations) {
++            var key = klass === '' ? 'paint' : 'paint.' + klass;
++            output[key] = util.mapObject(this._paintDeclarations[klass], getDeclarationValue);
++        }
+ 
+-}
++        if (!this.ref || (options && options.includeRefProperties)) {
++            util.extend(output, {
++                'type': this.type,
++                'source': this.source,
++                'source-layer': this.sourceLayer,
++                'filter': this.filter,
++                'layout': util.mapObject(this._layoutDeclarations, getDeclarationValue)
++            });
++        }
+ 
+-function createGetter(member, c) {
+-    return new Function([], 'return ' + createMemberComponentString(member, c) + ';');
+-}
++        return util.filterObject(output, function(value, key) {
++            return value !== undefined && !(key === 'layout' && !Object.keys(value).length);
++        });
++    },
+ 
+-function createSetter(member, c) {
+-    return new Function(['x'], createMemberComponentString(member, c) + ' = x;');
+-}
++    // set paint transition based on a given paint declaration
++    _applyPaintDeclaration: function (name, declaration, options, globalOptions, animationLoop) {
++        var oldTransition = options.transition ? this._paintTransitions[name] : undefined;
+ 
+-/**
+- * @class Struct
+- * @param {StructArray} structArray The StructArray the struct is stored in
+- * @param {number} index The index of the struct in the StructArray.
+- * @private
+- */
+-function Struct(structArray, index) {
+-    this._structArray = structArray;
+-    this._pos1 = index * this.size;
+-    this._pos2 = this._pos1 / 2;
+-    this._pos4 = this._pos1 / 4;
+-    this._pos8 = this._pos1 / 8;
+-}
++        if (declaration === null || declaration === undefined) {
++            var spec = this._paintSpecifications[name];
++            declaration = new StyleDeclaration(spec, spec.default);
++        }
+ 
+-/**
+- * @class StructArray
+- * The StructArray class is inherited by the custom StructArrayType classes created with
+- * `new StructArrayType(members, options)`.
+- * @private
+- */
+-function StructArray(serialized) {
+-    if (serialized !== undefined) {
+-    // Create from an serialized StructArray
+-        this.arrayBuffer = serialized.arrayBuffer;
+-        this.length = serialized.length;
+-        this.capacity = this.arrayBuffer.byteLength / this.bytesPerElement;
+-        this._refreshViews();
++        if (oldTransition && oldTransition.declaration.json === declaration.json) return;
+ 
+-    // Create a new StructArray
+-    } else {
+-        this.capacity = -1;
+-        this.resize(0);
+-    }
+-}
++        var transitionOptions = util.extend({
++            duration: 300,
++            delay: 0
++        }, globalOptions, this.getPaintProperty(name + TRANSITION_SUFFIX));
+ 
+-/**
+- * @property {number}
+- * @private
+- * @readonly
+- */
+-StructArray.prototype.DEFAULT_CAPACITY = 128;
++        var newTransition = this._paintTransitions[name] =
++                new StyleTransition(declaration, oldTransition, transitionOptions);
+ 
+-/**
+- * @property {number}
+- * @private
+- * @readonly
+- */
+-StructArray.prototype.RESIZE_MULTIPLIER = 5;
++        if (!newTransition.instant()) {
++            newTransition.loopID = animationLoop.set(newTransition.endTime - Date.now());
++        }
++        if (oldTransition) {
++            animationLoop.cancel(oldTransition.loopID);
++        }
++    },
+ 
+-/**
+- * Serialize this StructArray instance
+- * @private
+- */
+-StructArray.prototype.serialize = function() {
+-    this.trim();
+-    return {
+-        length: this.length,
+-        arrayBuffer: this.arrayBuffer
+-    };
+-};
++    // update layout value if it's constant, or mark it as zoom-dependent
++    _updateLayoutValue: function(name) {
++        var declaration = this._layoutDeclarations[name];
+ 
+-/**
+- * Return the Struct at the given location in the array.
+- * @private
+- * @param {number} index The index of the element.
+- */
+-StructArray.prototype.get = function(index) {
+-    return new this.StructType(this, index);
+-};
++        if (declaration && declaration.isFunction) {
++            this._layoutFunctions[name] = true;
++        } else {
++            delete this._layoutFunctions[name];
++            this.layout[name] = this.getLayoutValue(name);
++        }
++    },
+ 
+-/**
+- * Resize the array to discard unused capacity.
+- * @private
+- */
+-StructArray.prototype.trim = function() {
+-    if (this.length !== this.capacity) {
+-        this.capacity = this.length;
+-        this.arrayBuffer = this.arrayBuffer.slice(0, this.length * this.bytesPerElement);
+-        this._refreshViews();
++    _handleErrors: function(validate, key, name, value) {
++        return validateStyle.emitErrors(this, validate.call(validateStyle, {
++            key: key,
++            layerType: this.type,
++            objectKey: name,
++            value: value,
++            styleSpec: styleSpec,
++            // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407
++            style: {glyphs: true, sprite: true}
++        }));
+     }
+-};
++});
+ 
+-/**
+- * Resize the array.
+- * If `n` is greater than the current length then additional elements with undefined values are added.
+- * If `n` is less than the current length then the array will be reduced to the first `n` elements.
+- * @param {number} n The new size of the array.
+- */
+-StructArray.prototype.resize = function(n) {
+-    this.length = n;
+-    if (n > this.capacity) {
+-        this.capacity = Math.max(n, Math.floor(this.capacity * this.RESIZE_MULTIPLIER), this.DEFAULT_CAPACITY);
+-        this.arrayBuffer = new ArrayBuffer(this.capacity * this.bytesPerElement);
++function getDeclarationValue(declaration) {
++    return declaration.value;
++}
+ 
+-        var oldUint8Array = this.uint8;
+-        this._refreshViews();
+-        if (oldUint8Array) this.uint8.set(oldUint8Array);
+-    }
+-};
++},{"../util/evented":161,"../util/util":169,"./parse_color":109,"./style_declaration":111,"./style_layer/background_style_layer":114,"./style_layer/circle_style_layer":115,"./style_layer/fill_style_layer":116,"./style_layer/line_style_layer":117,"./style_layer/raster_style_layer":118,"./style_layer/symbol_style_layer":119,"./style_spec":120,"./style_transition":121,"./validate_style":122}],114:[function(require,module,exports){
++'use strict';
++
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
++
++function BackgroundStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
++
++module.exports = BackgroundStyleLayer;
+ 
+-/**
+- * Create TypedArray views for the current ArrayBuffer.
+- * @private
+- */
+-StructArray.prototype._refreshViews = function() {
+-    for (var t = 0; t < this._usedTypes.length; t++) {
+-        var type = this._usedTypes[t];
+-        this[getArrayViewName(type)] = new viewTypes[type](this.arrayBuffer);
+-    }
+-};
++BackgroundStyleLayer.prototype = util.inherit(StyleLayer, {});
+ 
+-},{"assert":6}],118:[function(require,module,exports){
++},{"../../util/util":169,"../style_layer":113}],115:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = resolveTokens;
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-/**
+- * Replace tokens in a string template with values in an object
+- *
+- * @param {Object} properties a key/value relationship between tokens and replacements
+- * @param {string} text the template string
+- * @returns {string} the template with tokens replaced
+- * @private
+- */
+-function resolveTokens(properties, text) {
+-    return text.replace(/{([^{}()\[\]<>$=:;.,^]+)}/g, function(match, key) {
+-        return key in properties ? properties[key] : '';
+-    });
++function CircleStyleLayer() {
++    StyleLayer.apply(this, arguments);
+ }
+ 
+-},{}],119:[function(require,module,exports){
++module.exports = CircleStyleLayer;
++
++CircleStyleLayer.prototype = util.inherit(StyleLayer, {});
++
++},{"../../util/util":169,"../style_layer":113}],116:[function(require,module,exports){
+ 'use strict';
+ 
+-var UnitBezier = require('unitbezier');
+-var Coordinate = require('../geo/coordinate');
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-/**
+- * Given a value `t` that varies between 0 and 1, return
+- * an interpolation function that eases between 0 and 1 in a pleasing
+- * cubic in-out fashion.
+- *
+- * @param {number} t input
+- * @returns {number} input
+- * @private
+- */
+-exports.easeCubicInOut = function (t) {
+-    if (t <= 0) return 0;
+-    if (t >= 1) return 1;
+-    var t2 = t * t,
+-        t3 = t2 * t;
+-    return 4 * (t < 0.5 ? t3 : 3 * (t - t2) + t3 - 0.75);
+-};
++function FillStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-/**
+- * Given given (x, y), (x1, y1) control points for a bezier curve,
+- * return a function that interpolates along that curve.
+- *
+- * @param {number} p1x control point 1 x coordinate
+- * @param {number} p1y control point 1 y coordinate
+- * @param {number} p2x control point 2 x coordinate
+- * @param {number} p2y control point 2 y coordinate
+- * @returns {Function} interpolator: receives number value, returns
+- * number value.
+- * @private
+- */
+-exports.bezier = function(p1x, p1y, p2x, p2y) {
+-    var bezier = new UnitBezier(p1x, p1y, p2x, p2y);
+-    return function(t) {
+-        return bezier.solve(t);
+-    };
+-};
++module.exports = FillStyleLayer;
+ 
+-/**
+- * A default bezier-curve powered easing function with
+- * control points (0.25, 0.1) and (0.25, 1)
+- *
+- * @param {number} t
+- * @returns {number} output
+- * @private
+- */
+-exports.ease = exports.bezier(0.25, 0.1, 0.25, 1);
++FillStyleLayer.prototype = util.inherit(StyleLayer, {});
+ 
+-/**
+- * Given a four-element array of numbers that represents a color in
+- * RGBA, return a version for which the RGB components are multiplied
+- * by the A (alpha) component
+- *
+- * @param {Array<number>} color color array
+- * @returns {Array<number>} premultiplied color array
+- * @private
+- */
+-exports.premultiply = function (color) {
+-    if (!color) return null;
+-    var opacity = color[3];
+-    return [
+-        color[0] * opacity,
+-        color[1] * opacity,
+-        color[2] * opacity,
+-        opacity
+-    ];
+-};
++},{"../../util/util":169,"../style_layer":113}],117:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * constrain n to the given range via min + max
+- *
+- * @param {number} n value
+- * @param {number} min the minimum value to be returned
+- * @param {number} max the maximum value to be returned
+- * @returns {number} the clamped value
+- * @private
+- */
+-exports.clamp = function (n, min, max) {
+-    return Math.min(max, Math.max(min, n));
+-};
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-/*
+- * constrain n to the given range, excluding the minimum, via modular arithmetic
+- * @param {number} n value
+- * @param {number} min the minimum value to be returned, exclusive
+- * @param {number} max the maximum value to be returned, inclusive
+- * @returns {number} constrained number
+- * @private
+- */
+-exports.wrap = function (n, min, max) {
+-    var d = max - min;
+-    var w = ((n - min) % d + d) % d + min;
+-    return (w === min) ? max : w;
+-};
++function LineStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-/*
+- * return the first non-null and non-undefined argument to this function.
+- * @returns {*} argument
+- * @private
+- */
+-exports.coalesce = function() {
+-    for (var i = 0; i < arguments.length; i++) {
+-        var arg = arguments[i];
+-        if (arg !== null && arg !== undefined)
+-            return arg;
+-    }
+-};
++module.exports = LineStyleLayer;
+ 
+-/*
+- * Call an asynchronous function on an array of arguments,
+- * calling `callback` with the completed results of all calls.
+- *
+- * @param {Array<*>} array input to each call of the async function.
+- * @param {Function} fn an async function with signature (data, callback)
+- * @param {Function} callback a callback run after all async work is done.
+- * called with an array, containing the results of each async call.
+- * @returns {undefined}
+- * @private
+- */
+-exports.asyncAll = function (array, fn, callback) {
+-    if (!array.length) { return callback(null, []); }
+-    var remaining = array.length;
+-    var results = new Array(array.length);
+-    var error = null;
+-    array.forEach(function (item, i) {
+-        fn(item, function (err, result) {
+-            if (err) error = err;
+-            results[i] = result;
+-            if (--remaining === 0) callback(error, results);
+-        });
+-    });
+-};
++LineStyleLayer.prototype = util.inherit(StyleLayer, {
+ 
+-/*
+- * Compute the difference between the keys in one object and the keys
+- * in another object.
+- *
+- * @param {Object} obj
+- * @param {Object} other
+- * @returns {Array<string>} keys difference
+- * @private
+- */
+-exports.keysDifference = function (obj, other) {
+-    var difference = [];
+-    for (var i in obj) {
+-        if (!(i in other)) {
+-            difference.push(i);
+-        }
+-    }
+-    return difference;
+-};
++    getPaintValue: function(name, globalProperties, featureProperties) {
++        var value = StyleLayer.prototype.getPaintValue.apply(this, arguments);
+ 
+-/**
+- * Given a destination object and optionally many source objects,
+- * copy all properties from the source objects into the destination.
+- * The last source object given overrides properties from previous
+- * source objects.
+- * @param {Object} dest destination object
+- * @param {...Object} sources sources from which properties are pulled
+- * @returns {Object} dest
+- * @private
+- */
+-exports.extend = function (dest) {
+-    for (var i = 1; i < arguments.length; i++) {
+-        var src = arguments[i];
+-        for (var k in src) {
+-            dest[k] = src[k];
++        // If the line is dashed, scale the dash lengths by the line
++        // width at the previous round zoom level.
++        if (value && name === 'line-dasharray') {
++            var flooredZoom = Math.floor(globalProperties.zoom);
++            if (this._flooredZoom !== flooredZoom) {
++                this._flooredZoom = flooredZoom;
++                this._flooredLineWidth = this.getPaintValue('line-width', globalProperties, featureProperties);
++            }
++
++            value.fromScale *= this._flooredLineWidth;
++            value.toScale *= this._flooredLineWidth;
+         }
+-    }
+-    return dest;
+-};
+ 
+-/**
+- * Extend a destination object with all properties of the src object,
+- * using defineProperty instead of simple assignment.
+- * @param {Object} dest
+- * @param {Object} src
+- * @returns {Object} dest
+- * @private
+- */
+-exports.extendAll = function (dest, src) {
+-    for (var i in src) {
+-        Object.defineProperty(dest, i, Object.getOwnPropertyDescriptor(src, i));
++        return value;
+     }
+-    return dest;
+-};
++});
+ 
+-/**
+- * Extend a parent's prototype with all properties in a properties
+- * object.
+- *
+- * @param {Object} parent
+- * @param {Object} props
+- * @returns {Object}
+- * @private
+- */
+-exports.inherit = function (parent, props) {
+-    var parentProto = typeof parent === 'function' ? parent.prototype : parent,
+-        proto = Object.create(parentProto);
+-    exports.extendAll(proto, props);
+-    return proto;
+-};
++},{"../../util/util":169,"../style_layer":113}],118:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Given an object and a number of properties as strings, return version
+- * of that object with only those properties.
+- *
+- * @param {Object} src the object
+- * @param {Array<string>} properties an array of property names chosen
+- * to appear on the resulting object.
+- * @returns {Object} object with limited properties.
+- * @example
+- * var foo = { name: 'Charlie', age: 10 };
+- * var justName = pick(foo, ['name']);
+- * // justName = { name: 'Charlie' }
+- * @private
+- */
+-exports.pick = function (src, properties) {
+-    var result = {};
+-    for (var i = 0; i < properties.length; i++) {
+-        var k = properties[i];
+-        if (k in src) {
+-            result[k] = src[k];
+-        }
+-    }
+-    return result;
+-};
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-var id = 1;
++function RasterStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-/**
+- * Return a unique numeric id, starting at 1 and incrementing with
+- * each call.
+- *
+- * @returns {number} unique numeric id.
+- * @private
+- */
+-exports.uniqueId = function () {
+-    return id++;
+-};
++module.exports = RasterStyleLayer;
+ 
+-/**
+- * Create a version of `fn` that is only called `time` milliseconds
+- * after its last invocation
+- *
+- * @param {Function} fn the function to be debounced
+- * @param {number} time millseconds after which the function will be invoked
+- * @returns {Function} debounced function
+- * @private
+- */
+-exports.debounce = function(fn, time) {
+-    var timer, args;
++RasterStyleLayer.prototype = util.inherit(StyleLayer, {});
+ 
+-    return function() {
+-        args = arguments;
+-        clearTimeout(timer);
++},{"../../util/util":169,"../style_layer":113}],119:[function(require,module,exports){
++'use strict';
+ 
+-        timer = setTimeout(function() {
+-            fn.apply(null, args);
+-        }, time);
+-    };
+-};
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-/**
+- * Given an array of member function names as strings, replace all of them
+- * with bound versions that will always refer to `context` as `this`. This
+- * is useful for classes where otherwise event bindings would reassign
+- * `this` to the evented object or some other value: this lets you ensure
+- * the `this` value always.
+- *
+- * @param {Array<string>} fns list of member function names
+- * @param {*} context the context value
+- * @returns {undefined} changes functions in-place
+- * @example
+- * function MyClass() {
+- *   bindAll(['ontimer'], this);
+- *   this.name = 'Tom';
+- * }
+- * MyClass.prototype.ontimer = function() {
+- *   alert(this.name);
+- * };
+- * var myClass = new MyClass();
+- * setTimeout(myClass.ontimer, 100);
+- * @private
+- */
+-exports.bindAll = function(fns, context) {
+-    fns.forEach(function(fn) {
+-        context[fn] = context[fn].bind(context);
+-    });
+-};
++function SymbolStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-/**
+- * Given a class, bind all of the methods that look like handlers: that
+- * begin with _on, and bind them to the class.
+- *
+- * @param {Object} context an object with methods
+- * @private
+- */
+-exports.bindHandlers = function(context) {
+-    for (var i in context) {
+-        if (typeof context[i] === 'function' && i.indexOf('_on') === 0) {
+-            context[i] = context[i].bind(context);
++module.exports = SymbolStyleLayer;
++
++SymbolStyleLayer.prototype = util.inherit(StyleLayer, {
++
++    isHidden: function() {
++        if (StyleLayer.prototype.isHidden.apply(this, arguments)) return true;
++
++        var isTextHidden = this.paint['text-opacity'] === 0 || !this.layout['text-field'];
++        var isIconHidden = this.paint['icon-opacity'] === 0 || !this.layout['icon-image'];
++        if (isTextHidden && isIconHidden) return true;
++
++        return false;
++    },
++
++    getLayoutValue: function(name, globalProperties, featureProperties) {
++        if (name === 'text-rotation-alignment' &&
++                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
++                !this.getLayoutProperty('text-rotation-alignment')) {
++            return 'map';
++        } else if (name === 'icon-rotation-alignment' &&
++                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
++                !this.getLayoutProperty('icon-rotation-alignment')) {
++            return 'map';
++        } else {
++            return StyleLayer.prototype.getLayoutValue.apply(this, arguments);
+         }
+     }
+-};
+ 
+-/**
+- * Set the 'options' property on `obj` with properties
+- * from the `options` argument. Properties in the `options`
+- * object will override existing properties.
+- *
+- * @param {Object} obj destination object
+- * @param {Object} options object of override options
+- * @returns {Object} derived options object.
+- * @private
+- */
+-exports.setOptions = function(obj, options) {
+-    if (!obj.hasOwnProperty('options')) {
+-        obj.options = obj.options ? Object.create(obj.options) : {};
+-    }
+-    for (var i in options) {
+-        obj.options[i] = options[i];
+-    }
+-    return obj.options;
+-};
++});
+ 
+-/**
+- * Given a list of coordinates, get their center as a coordinate.
+- * @param {Array<Coordinate>} coords
+- * @returns {Coordinate} centerpoint
+- * @private
++},{"../../util/util":169,"../style_layer":113}],120:[function(require,module,exports){
++'use strict';
++
++module.exports = require('mapbox-gl-style-spec/reference/latest');
++
++},{"mapbox-gl-style-spec/reference/latest":63}],121:[function(require,module,exports){
++'use strict';
++
++var util = require('../util/util');
++var interpolate = require('../util/interpolate');
++
++module.exports = StyleTransition;
++
++/*
++ * Represents a transition between two declarations
+  */
+-exports.getCoordinatesCenter = function(coords) {
+-    var minX = Infinity;
+-    var minY = Infinity;
+-    var maxX = -Infinity;
+-    var maxY = -Infinity;
++function StyleTransition(declaration, oldTransition, value) {
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        minX = Math.min(minX, coords[i].column);
+-        minY = Math.min(minY, coords[i].row);
+-        maxX = Math.max(maxX, coords[i].column);
+-        maxY = Math.max(maxY, coords[i].row);
++    this.declaration = declaration;
++    this.startTime = this.endTime = (new Date()).getTime();
++
++    var type = declaration.type;
++    if ((type === 'string' || type === 'array') && declaration.transitionable) {
++        this.interp = interpZoomTransitioned;
++    } else {
++        this.interp = interpolate[type];
+     }
+ 
+-    var dx = maxX - minX;
+-    var dy = maxY - minY;
+-    var dMax = Math.max(dx, dy);
+-    return new Coordinate((minX + maxX) / 2, (minY + maxY) / 2, 0)
+-        .zoomTo(Math.floor(-Math.log(dMax) / Math.LN2));
+-};
++    this.oldTransition = oldTransition;
++    this.duration = value.duration || 0;
++    this.delay = value.delay || 0;
+ 
+-/**
+- * Determine if a string ends with a particular substring
+- * @param {string} string
+- * @param {string} suffix
+- * @returns {boolean}
+- * @private
+- */
+-exports.endsWith = function(string, suffix) {
+-    return string.indexOf(suffix, string.length - suffix.length) !== -1;
+-};
++    if (!this.instant()) {
++        this.endTime = this.startTime + this.duration + this.delay;
++        this.ease = util.easeCubicInOut;
++    }
+ 
+-/**
+- * Determine if a string starts with a particular substring
+- * @param {string} string
+- * @param {string} prefix
+- * @returns {boolean}
+- * @private
+- */
+-exports.startsWith = function(string, prefix) {
+-    return string.indexOf(prefix) === 0;
+-};
++    if (oldTransition && oldTransition.endTime <= this.startTime) {
++        // Old transition is done running, so we can
++        // delete its reference to its old transition.
+ 
+-/**
+- * Create an object by mapping all the values of an existing object while
+- * preserving their keys.
+- * @param {Object} input
+- * @param {Function} iterator
+- * @returns {Object}
+- * @private
+- */
+-exports.mapObject = function(input, iterator, context) {
+-    var output = {};
+-    for (var key in input) {
+-        output[key] = iterator.call(context || this, input[key], key, input);
++        delete oldTransition.oldTransition;
+     }
+-    return output;
++}
++
++StyleTransition.prototype.instant = function() {
++    return !this.oldTransition || !this.interp || (this.duration === 0 && this.delay === 0);
+ };
+ 
+-/**
+- * Create an object by filtering out values of an existing object
+- * @param {Object} input
+- * @param {Function} iterator
+- * @returns {Object}
+- * @private
++/*
++ * Return the value of the transitioning property at zoom level `z` and optional time `t`
+  */
+-exports.filterObject = function(input, iterator, context) {
+-    var output = {};
+-    for (var key in input) {
+-        if (iterator.call(context || this, input[key], key, input)) {
+-            output[key] = input[key];
+-        }
++StyleTransition.prototype.calculate = function(globalProperties, featureProperties) {
++    var value = this.declaration.calculate(
++        util.extend({}, globalProperties, {duration: this.duration}),
++        featureProperties
++    );
++
++    if (this.instant()) return value;
++
++    var t = globalProperties.time || Date.now();
++
++    if (t < this.endTime) {
++        var oldValue = this.oldTransition.calculate(
++            util.extend({}, globalProperties, {time: this.startTime}),
++            featureProperties
++        );
++        var eased = this.ease((t - this.startTime - this.delay) / this.duration);
++        value = this.interp(oldValue, value, eased);
+     }
+-    return output;
++
++    return value;
++
+ };
+ 
+-/**
+- * Deeply compares two object literals.
+- * @param {Object} obj1
+- * @param {Object} obj2
+- * @returns {boolean}
+- * @private
+- */
+-exports.deepEqual = function deepEqual(a, b) {
+-    if (Array.isArray(a)) {
+-        if (!Array.isArray(b) || a.length !== b.length) return false;
+-        for (var i = 0; i < a.length; i++) {
+-            if (!deepEqual(a[i], b[i])) return false;
++function interpZoomTransitioned(from, to, t) {
++    return {
++        from: from.to,
++        fromScale: from.toScale,
++        to: to.to,
++        toScale: to.toScale,
++        t: t
++    };
++}
++
++},{"../util/interpolate":163,"../util/util":169}],122:[function(require,module,exports){
++'use strict';
++
++module.exports = require('mapbox-gl-style-spec/lib/validate_style.min');
++
++module.exports.emitErrors = function throwErrors(emitter, errors) {
++    if (errors && errors.length) {
++        for (var i = 0; i < errors.length; i++) {
++            emitter.fire('error', { error: new Error(errors[i].message) });
+         }
+         return true;
++    } else {
++        return false;
+     }
+-    if (typeof a === 'object') {
+-        if (!(typeof b === 'object')) return false;
+-        var keys = Object.keys(a);
+-        if (keys.length !== Object.keys(b).length) return false;
+-        for (var key in a) {
+-            if (!deepEqual(a[key], b[key])) return false;
++};
++
++module.exports.throwErrors = function throwErrors(emitter, errors) {
++    if (errors) {
++        for (var i = 0; i < errors.length; i++) {
++            throw new Error(errors[i].message);
+         }
+-        return true;
+     }
+-    return a === b;
+ };
+ 
+-/**
+- * Deeply clones two objects.
+- * @param {Object} obj1
+- * @param {Object} obj2
+- * @returns {boolean}
+- * @private
+- */
+-exports.clone = function deepEqual(input) {
+-    if (Array.isArray(input)) {
+-        return input.map(exports.clone);
+-    } else if (typeof input === 'object') {
+-        return exports.mapObject(input, exports.clone);
+-    } else {
+-        return input;
++},{"mapbox-gl-style-spec/lib/validate_style.min":62}],123:[function(require,module,exports){
++'use strict';
++
++var Point = require('point-geometry');
++
++module.exports = Anchor;
++
++function Anchor(x, y, angle, segment) {
++    this.x = x;
++    this.y = y;
++    this.angle = angle;
++
++    if (segment !== undefined) {
++        this.segment = segment;
+     }
++}
++
++Anchor.prototype = Object.create(Point.prototype);
++
++Anchor.prototype.clone = function() {
++    return new Anchor(this.x, this.y, this.angle, this.segment);
+ };
+ 
++},{"point-geometry":174}],124:[function(require,module,exports){
++'use strict';
++
++module.exports = checkMaxAngle;
++
+ /**
+- * Check if two arrays have at least one common element.
+- * @param {Array} a
+- * @param {Array} b
+- * @returns {boolean}
++ * Labels placed around really sharp angles aren't readable. Check if any
++ * part of the potential label has a combined angle that is too big.
++ *
++ * @param {Array<Point>} line
++ * @param {Anchor} anchor The point on the line around which the label is anchored.
++ * @param {number} labelLength The length of the label in geometry units.
++ * @param {number} windowSize The check fails if the combined angles within a part of the line that is `windowSize` long is too big.
++ * @param {number} maxAngle The maximum combined angle that any window along the label is allowed to have.
++ *
++ * @returns {boolean} whether the label should be placed
+  * @private
+  */
+-exports.arraysIntersect = function(a, b) {
+-    for (var l = 0; l < a.length; l++) {
+-        if (b.indexOf(a[l]) >= 0) return true;
++function checkMaxAngle(line, anchor, labelLength, windowSize, maxAngle) {
++
++    // horizontal labels always pass
++    if (anchor.segment === undefined) return true;
++
++    var p = anchor;
++    var index = anchor.segment + 1;
++    var anchorDistance = 0;
++
++    // move backwards along the line to the first segment the label appears on
++    while (anchorDistance > -labelLength / 2) {
++        index--;
++
++        // there isn't enough room for the label after the beginning of the line
++        if (index < 0) return false;
++
++        anchorDistance -= line[index].dist(p);
++        p = line[index];
+     }
+-    return false;
+-};
+ 
+-},{"../geo/coordinate":25,"unitbezier":182}],120:[function(require,module,exports){
+-'use strict';
++    anchorDistance += line[index].dist(line[index + 1]);
++    index++;
+ 
+-var VectorTileFeature = require('vector-tile').VectorTileFeature;
++    // store recent corners and their total angle difference
++    var recentCorners = [];
++    var recentAngleDelta = 0;
+ 
+-module.exports = Feature;
++    // move forwards by the length of the label and check angles along the way
++    while (anchorDistance < labelLength / 2) {
++        var prev = line[index - 1];
++        var current = line[index];
++        var next = line[index + 1];
+ 
+-function Feature(vectorTileFeature, z, x, y) {
+-    this._vectorTileFeature = vectorTileFeature;
+-    vectorTileFeature._z = z;
+-    vectorTileFeature._x = x;
+-    vectorTileFeature._y = y;
++        // there isn't enough room for the label before the end of the line
++        if (!next) return false;
+ 
+-    this.properties = vectorTileFeature.properties;
++        var angleDelta = prev.angleTo(current) - current.angleTo(next);
++        // restrict angle to -pi..pi range
++        angleDelta = Math.abs(((angleDelta + 3 * Math.PI) % (Math.PI * 2)) - Math.PI);
+ 
+-    if (vectorTileFeature._id) {
+-        this.id = vectorTileFeature._id;
++        recentCorners.push({
++            distance: anchorDistance,
++            angleDelta: angleDelta
++        });
++        recentAngleDelta += angleDelta;
++
++        // remove corners that are far enough away from the list of recent anchors
++        while (anchorDistance - recentCorners[0].distance > windowSize) {
++            recentAngleDelta -= recentCorners.shift().angleDelta;
++        }
++
++        // the sum of angles within the window area exceeds the maximum allowed value. check fails.
++        if (recentAngleDelta > maxAngle) return false;
++
++        index++;
++        anchorDistance += current.dist(next);
+     }
++
++    // no part of the line had an angle greater than the maximum allowed. check passes.
++    return true;
+ }
+ 
+-Feature.prototype = {
+-    type: "Feature",
++},{}],125:[function(require,module,exports){
++'use strict';
+ 
+-    get geometry() {
+-        if (this._geometry === undefined) {
+-            var feature = this._vectorTileFeature;
+-            var coords = projectCoords(
+-                feature.loadGeometry(),
+-                feature.extent,
+-                feature._z, feature._x, feature._y);
++var Point = require('point-geometry');
+ 
+-            var type = VectorTileFeature.types[feature.type];
++module.exports = clipLine;
+ 
+-            if (type === 'Point' && coords.length === 1) {
+-                coords = coords[0][0];
+-            } else if (type === 'Point') {
+-                coords = coords[0];
+-                type = 'MultiPoint';
+-            } else if (type === 'LineString' && coords.length === 1) {
+-                coords = coords[0];
+-            } else if (type === 'LineString') {
+-                type = 'MultiLineString';
++/**
++ * Returns the part of a multiline that intersects with the provided rectangular box.
++ *
++ * @param {Array<Array<Point>>} lines
++ * @param {number} x1 the left edge of the box
++ * @param {number} y1 the top edge of the box
++ * @param {number} x2 the right edge of the box
++ * @param {number} y2 the bottom edge of the box
++ * @returns {Array<Array<Point>>} lines
++ * @private
++ */
++function clipLine(lines, x1, y1, x2, y2) {
++    var clippedLines = [];
++
++    for (var l = 0; l < lines.length; l++) {
++        var line = lines[l];
++        var clippedLine;
++
++        for (var i = 0; i < line.length - 1; i++) {
++            var p0 = line[i];
++            var p1 = line[i + 1];
++
++
++            if (p0.x < x1 && p1.x < x1) {
++                continue;
++            } else if (p0.x < x1) {
++                p0 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
++            } else if (p1.x < x1) {
++                p1 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
+             }
+ 
+-            this._geometry = {
+-                type: type,
+-                coordinates: coords
+-            };
++            if (p0.y < y1 && p1.y < y1) {
++                continue;
++            } else if (p0.y < y1) {
++                p0 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
++            } else if (p1.y < y1) {
++                p1 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
++            }
+ 
+-            this._vectorTileFeature = null;
+-        }
+-        return this._geometry;
+-    },
++            if (p0.x >= x2 && p1.x >= x2) {
++                continue;
++            } else if (p0.x >= x2) {
++                p0 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
++            } else if (p1.x >= x2) {
++                p1 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
++            }
+ 
+-    set geometry(g) {
+-        this._geometry = g;
+-    },
++            if (p0.y >= y2 && p1.y >= y2) {
++                continue;
++            } else if (p0.y >= y2) {
++                p0 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
++            } else if (p1.y >= y2) {
++                p1 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
++            }
+ 
+-    toJSON: function() {
+-        var json = {};
+-        for (var i in this) {
+-            if (i === '_geometry' || i === '_vectorTileFeature') continue;
+-            json[i] = this[i];
+-        }
+-        return json;
+-    }
+-};
++            if (!clippedLine || !p0.equals(clippedLine[clippedLine.length - 1])) {
++                clippedLine = [p0];
++                clippedLines.push(clippedLine);
++            }
+ 
+-function projectCoords(coords, extent, z, x, y) {
+-    var size = extent * Math.pow(2, z),
+-        x0 = extent * x,
+-        y0 = extent * y;
+-    for (var i = 0; i < coords.length; i++) {
+-        var line = coords[i];
+-        for (var j = 0; j < line.length; j++) {
+-            var p = line[j];
+-            var y2 = 180 - (p.y + y0) * 360 / size;
+-            line[j] = [
+-                (p.x + x0) * 360 / size - 180,
+-                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
+-            ];
++            clippedLine.push(p1);
+         }
+     }
+-    return coords;
++
++    return clippedLines;
+ }
+ 
+-},{"vector-tile":183}],121:[function(require,module,exports){
+-// (c) Dean McNamee <dean@gmail.com>, 2012.
+-//
+-// https://github.com/deanm/css-color-parser-js
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a copy
+-// of this software and associated documentation files (the "Software"), to
+-// deal in the Software without restriction, including without limitation the
+-// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+-// sell copies of the Software, and to permit persons to whom the Software is
+-// furnished to do so, subject to the following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included in
+-// all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+-// IN THE SOFTWARE.
++},{"point-geometry":174}],126:[function(require,module,exports){
++'use strict';
+ 
+-// http://www.w3.org/TR/css3-color/
+-var kCSSColorTable = {
+-  "transparent": [0,0,0,0], "aliceblue": [240,248,255,1],
+-  "antiquewhite": [250,235,215,1], "aqua": [0,255,255,1],
+-  "aquamarine": [127,255,212,1], "azure": [240,255,255,1],
+-  "beige": [245,245,220,1], "bisque": [255,228,196,1],
+-  "black": [0,0,0,1], "blanchedalmond": [255,235,205,1],
+-  "blue": [0,0,255,1], "blueviolet": [138,43,226,1],
+-  "brown": [165,42,42,1], "burlywood": [222,184,135,1],
+-  "cadetblue": [95,158,160,1], "chartreuse": [127,255,0,1],
+-  "chocolate": [210,105,30,1], "coral": [255,127,80,1],
+-  "cornflowerblue": [100,149,237,1], "cornsilk": [255,248,220,1],
+-  "crimson": [220,20,60,1], "cyan": [0,255,255,1],
+-  "darkblue": [0,0,139,1], "darkcyan": [0,139,139,1],
+-  "darkgoldenrod": [184,134,11,1], "darkgray": [169,169,169,1],
+-  "darkgreen": [0,100,0,1], "darkgrey": [169,169,169,1],
+-  "darkkhaki": [189,183,107,1], "darkmagenta": [139,0,139,1],
+-  "darkolivegreen": [85,107,47,1], "darkorange": [255,140,0,1],
+-  "darkorchid": [153,50,204,1], "darkred": [139,0,0,1],
+-  "darksalmon": [233,150,122,1], "darkseagreen": [143,188,143,1],
+-  "darkslateblue": [72,61,139,1], "darkslategray": [47,79,79,1],
+-  "darkslategrey": [47,79,79,1], "darkturquoise": [0,206,209,1],
+-  "darkviolet": [148,0,211,1], "deeppink": [255,20,147,1],
+-  "deepskyblue": [0,191,255,1], "dimgray": [105,105,105,1],
+-  "dimgrey": [105,105,105,1], "dodgerblue": [30,144,255,1],
+-  "firebrick": [178,34,34,1], "floralwhite": [255,250,240,1],
+-  "forestgreen": [34,139,34,1], "fuchsia": [255,0,255,1],
+-  "gainsboro": [220,220,220,1], "ghostwhite": [248,248,255,1],
+-  "gold": [255,215,0,1], "goldenrod": [218,165,32,1],
+-  "gray": [128,128,128,1], "green": [0,128,0,1],
+-  "greenyellow": [173,255,47,1], "grey": [128,128,128,1],
+-  "honeydew": [240,255,240,1], "hotpink": [255,105,180,1],
+-  "indianred": [205,92,92,1], "indigo": [75,0,130,1],
+-  "ivory": [255,255,240,1], "khaki": [240,230,140,1],
+-  "lavender": [230,230,250,1], "lavenderblush": [255,240,245,1],
+-  "lawngreen": [124,252,0,1], "lemonchiffon": [255,250,205,1],
+-  "lightblue": [173,216,230,1], "lightcoral": [240,128,128,1],
+-  "lightcyan": [224,255,255,1], "lightgoldenrodyellow": [250,250,210,1],
+-  "lightgray": [211,211,211,1], "lightgreen": [144,238,144,1],
+-  "lightgrey": [211,211,211,1], "lightpink": [255,182,193,1],
+-  "lightsalmon": [255,160,122,1], "lightseagreen": [32,178,170,1],
+-  "lightskyblue": [135,206,250,1], "lightslategray": [119,136,153,1],
+-  "lightslategrey": [119,136,153,1], "lightsteelblue": [176,196,222,1],
+-  "lightyellow": [255,255,224,1], "lime": [0,255,0,1],
+-  "limegreen": [50,205,50,1], "linen": [250,240,230,1],
+-  "magenta": [255,0,255,1], "maroon": [128,0,0,1],
+-  "mediumaquamarine": [102,205,170,1], "mediumblue": [0,0,205,1],
+-  "mediumorchid": [186,85,211,1], "mediumpurple": [147,112,219,1],
+-  "mediumseagreen": [60,179,113,1], "mediumslateblue": [123,104,238,1],
+-  "mediumspringgreen": [0,250,154,1], "mediumturquoise": [72,209,204,1],
+-  "mediumvioletred": [199,21,133,1], "midnightblue": [25,25,112,1],
+-  "mintcream": [245,255,250,1], "mistyrose": [255,228,225,1],
+-  "moccasin": [255,228,181,1], "navajowhite": [255,222,173,1],
+-  "navy": [0,0,128,1], "oldlace": [253,245,230,1],
+-  "olive": [128,128,0,1], "olivedrab": [107,142,35,1],
+-  "orange": [255,165,0,1], "orangered": [255,69,0,1],
+-  "orchid": [218,112,214,1], "palegoldenrod": [238,232,170,1],
+-  "palegreen": [152,251,152,1], "paleturquoise": [175,238,238,1],
+-  "palevioletred": [219,112,147,1], "papayawhip": [255,239,213,1],
+-  "peachpuff": [255,218,185,1], "peru": [205,133,63,1],
+-  "pink": [255,192,203,1], "plum": [221,160,221,1],
+-  "powderblue": [176,224,230,1], "purple": [128,0,128,1],
+-  "red": [255,0,0,1], "rosybrown": [188,143,143,1],
+-  "royalblue": [65,105,225,1], "saddlebrown": [139,69,19,1],
+-  "salmon": [250,128,114,1], "sandybrown": [244,164,96,1],
+-  "seagreen": [46,139,87,1], "seashell": [255,245,238,1],
+-  "sienna": [160,82,45,1], "silver": [192,192,192,1],
+-  "skyblue": [135,206,235,1], "slateblue": [106,90,205,1],
+-  "slategray": [112,128,144,1], "slategrey": [112,128,144,1],
+-  "snow": [255,250,250,1], "springgreen": [0,255,127,1],
+-  "steelblue": [70,130,180,1], "tan": [210,180,140,1],
+-  "teal": [0,128,128,1], "thistle": [216,191,216,1],
+-  "tomato": [255,99,71,1], "turquoise": [64,224,208,1],
+-  "violet": [238,130,238,1], "wheat": [245,222,179,1],
+-  "white": [255,255,255,1], "whitesmoke": [245,245,245,1],
+-  "yellow": [255,255,0,1], "yellowgreen": [154,205,50,1]}
++var StructArrayType = require('../util/struct_array');
++var util = require('../util/util');
++var Point = require('point-geometry');
+ 
+-function clamp_css_byte(i) {  // Clamp to integer 0 .. 255.
+-  i = Math.round(i);  // Seems to be what Chrome does (vs truncation).
+-  return i < 0 ? 0 : i > 255 ? 255 : i;
+-}
++/**
++ * A collision box represents an area of the map that that is covered by a
++ * label. CollisionFeature uses one or more of these collision boxes to
++ * represent all the area covered by a single label. They are used to
++ * prevent collisions between labels.
++ *
++ * A collision box actually represents a 3d volume. The first two dimensions,
++ * x and y, are specified with `anchor` along with `x1`, `y1`, `x2`, `y2`.
++ * The third dimension, zoom, is limited by `maxScale` which determines
++ * how far in the z dimensions the box extends.
++ *
++ * As you zoom in on a map, all points on the map get further and further apart
++ * but labels stay roughly the same size. Labels cover less real world area on
++ * the map at higher zoom levels than they do at lower zoom levels. This is why
++ * areas are are represented with an anchor point and offsets from that point
++ * instead of just using four absolute points.
++ *
++ * Line labels are represented by a set of these boxes spaced out along a line.
++ * When you zoom in, line labels cover less real world distance along the line
++ * than they used to. Collision boxes near the edges that used to cover label
++ * no longer do. If a box doesn't cover the label anymore it should be ignored
++ * when doing collision checks. `maxScale` is how much you can scale the map
++ * before the label isn't within the box anymore.
++ * For example
++ * lower zoom:
++ * https://cloud.githubusercontent.com/assets/1421652/8060094/4d975f76-0e91-11e5-84b1-4edeb30a5875.png
++ * slightly higher zoom:
++ * https://cloud.githubusercontent.com/assets/1421652/8060061/26ae1c38-0e91-11e5-8c5a-9f380bf29f0a.png
++ * In the zoomed in image the two grey boxes on either side don't cover the
++ * label anymore. Their maxScale is smaller than the current scale.
++ *
++ *
++ * @class CollisionBoxArray
++ * @private
++ */
+ 
+-function clamp_css_float(f) {  // Clamp to float 0.0 .. 1.0.
+-  return f < 0 ? 0 : f > 1 ? 1 : f;
+-}
++var CollisionBoxArray = module.exports = new StructArrayType({
++    members: [
++        // the box is centered around the anchor point
++        { type: 'Int16', name: 'anchorPointX' },
++        { type: 'Int16', name: 'anchorPointY' },
+ 
+-function parse_css_int(str) {  // int or percentage.
+-  if (str[str.length - 1] === '%')
+-    return clamp_css_byte(parseFloat(str) / 100 * 255);
+-  return clamp_css_byte(parseInt(str));
+-}
++        // distances to the edges from the anchor
++        { type: 'Int16', name: 'x1' },
++        { type: 'Int16', name: 'y1' },
++        { type: 'Int16', name: 'x2' },
++        { type: 'Int16', name: 'y2' },
+ 
+-function parse_css_float(str) {  // float or percentage.
+-  if (str[str.length - 1] === '%')
+-    return clamp_css_float(parseFloat(str) / 100);
+-  return clamp_css_float(parseFloat(str));
+-}
++        // the box is only valid for scales < maxScale.
++        // The box does not block other boxes at scales >= maxScale;
++        { type: 'Float32', name: 'maxScale' },
+ 
+-function css_hue_to_rgb(m1, m2, h) {
+-  if (h < 0) h += 1;
+-  else if (h > 1) h -= 1;
++        // the index of the feature in the original vectortile
++        { type: 'Uint32', name: 'featureIndex' },
++        // the source layer the feature appears in
++        { type: 'Uint16', name: 'sourceLayerIndex' },
++        // the bucket the feature appears in
++        { type: 'Uint16', name: 'bucketIndex' },
+ 
+-  if (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
+-  if (h * 2 < 1) return m2;
+-  if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6;
+-  return m1;
+-}
++        // rotated and scaled bbox used for indexing
++        { type: 'Int16', name: 'bbox0' },
++        { type: 'Int16', name: 'bbox1' },
++        { type: 'Int16', name: 'bbox2' },
++        { type: 'Int16', name: 'bbox3' },
+ 
+-function parseCSSColor(css_str) {
+-  // Remove all whitespace, not compliant, but should just be more accepting.
+-  var str = css_str.replace(/ /g, '').toLowerCase();
++        { type: 'Float32', name: 'placementScale' }
++    ]});
+ 
+-  // Color keywords (and transparent) lookup.
+-  if (str in kCSSColorTable) return kCSSColorTable[str].slice();  // dup.
++util.extendAll(CollisionBoxArray.prototype.StructType.prototype, {
++    get anchorPoint() {
++        return new Point(this.anchorPointX, this.anchorPointY);
++    }
++});
++
++},{"../util/struct_array":167,"../util/util":169,"point-geometry":174}],127:[function(require,module,exports){
++'use strict';
++
++module.exports = CollisionFeature;
++
++/**
++ * A CollisionFeature represents the area of the tile covered by a single label.
++ * It is used with CollisionTile to check if the label overlaps with any
++ * previous labels. A CollisionFeature is mostly just a set of CollisionBox
++ * objects.
++ *
++ * @class CollisionFeature
++ * @param {Array<Point>} line The geometry the label is placed on.
++ * @param {Anchor} anchor The point along the line around which the label is anchored.
++ * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
++ * @param {Array<string>} layerIDs The IDs of the layers that this CollisionFeature is a part of.
++ * @param {Object} shaped The text or icon shaping results.
++ * @param {number} boxScale A magic number used to convert from glyph metrics units to geometry units.
++ * @param {number} padding The amount of padding to add around the label edges.
++ * @param {boolean} alignLine Whether the label is aligned with the line or the viewport.
++ *
++ * @private
++ */
++function CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex, shaped, boxScale, padding, alignLine, straight) {
+ 
+-  // #abc and #abc123 syntax.
+-  if (str[0] === '#') {
+-    if (str.length === 4) {
+-      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
+-      if (!(iv >= 0 && iv <= 0xfff)) return null;  // Covers NaN.
+-      return [((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8),
+-              (iv & 0xf0) | ((iv & 0xf0) >> 4),
+-              (iv & 0xf) | ((iv & 0xf) << 4),
+-              1];
+-    } else if (str.length === 7) {
+-      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
+-      if (!(iv >= 0 && iv <= 0xffffff)) return null;  // Covers NaN.
+-      return [(iv & 0xff0000) >> 16,
+-              (iv & 0xff00) >> 8,
+-              iv & 0xff,
+-              1];
+-    }
++    var y1 = shaped.top * boxScale - padding;
++    var y2 = shaped.bottom * boxScale + padding;
++    var x1 = shaped.left * boxScale - padding;
++    var x2 = shaped.right * boxScale + padding;
+ 
+-    return null;
+-  }
++    this.boxStartIndex = collisionBoxArray.length;
+ 
+-  var op = str.indexOf('('), ep = str.indexOf(')');
+-  if (op !== -1 && ep + 1 === str.length) {
+-    var fname = str.substr(0, op);
+-    var params = str.substr(op+1, ep-(op+1)).split(',');
+-    var alpha = 1;  // To allow case fallthrough.
+-    switch (fname) {
+-      case 'rgba':
+-        if (params.length !== 4) return null;
+-        alpha = parse_css_float(params.pop());
+-        // Fall through.
+-      case 'rgb':
+-        if (params.length !== 3) return null;
+-        return [parse_css_int(params[0]),
+-                parse_css_int(params[1]),
+-                parse_css_int(params[2]),
+-                alpha];
+-      case 'hsla':
+-        if (params.length !== 4) return null;
+-        alpha = parse_css_float(params.pop());
+-        // Fall through.
+-      case 'hsl':
+-        if (params.length !== 3) return null;
+-        var h = (((parseFloat(params[0]) % 360) + 360) % 360) / 360;  // 0 .. 1
+-        // NOTE(deanm): According to the CSS spec s/l should only be
+-        // percentages, but we don't bother and let float or percentage.
+-        var s = parse_css_float(params[1]);
+-        var l = parse_css_float(params[2]);
+-        var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
+-        var m1 = l * 2 - m2;
+-        return [clamp_css_byte(css_hue_to_rgb(m1, m2, h+1/3) * 255),
+-                clamp_css_byte(css_hue_to_rgb(m1, m2, h) * 255),
+-                clamp_css_byte(css_hue_to_rgb(m1, m2, h-1/3) * 255),
+-                alpha];
+-      default:
+-        return null;
+-    }
+-  }
++    if (alignLine) {
+ 
+-  return null;
+-}
++        var height = y2 - y1;
++        var length = x2 - x1;
+ 
+-try { exports.parseCSSColor = parseCSSColor } catch(e) { }
++        if (height > 0) {
++            // set minimum box height to avoid very many small labels
++            height = Math.max(10 * boxScale, height);
+ 
+-},{}],122:[function(require,module,exports){
+-'use strict';
++            if (straight) {
++                // used for icon labels that are aligned with the line, but don't curve along it
++                var vector = line[anchor.segment + 1].sub(line[anchor.segment])._unit()._mult(length);
++                var straightLine = [anchor.sub(vector), anchor.add(vector)];
++                this._addLineCollisionBoxes(collisionBoxArray, straightLine, anchor, 0, length, height, featureIndex, sourceLayerIndex, bucketIndex);
++            } else {
++                // used for text labels that curve along a line
++                this._addLineCollisionBoxes(collisionBoxArray, line, anchor, anchor.segment, length, height, featureIndex, sourceLayerIndex, bucketIndex);
++            }
++        }
+ 
+-module.exports = createFilter;
++    } else {
++        collisionBoxArray.emplaceBack(anchor.x, anchor.y, x1, y1, x2, y2, Infinity, featureIndex, sourceLayerIndex, bucketIndex,
++                0, 0, 0, 0, 0);
++    }
+ 
+-var types = ['Unknown', 'Point', 'LineString', 'Polygon'];
++    this.boxEndIndex = collisionBoxArray.length;
++}
+ 
+ /**
+- * Given a filter expressed as nested arrays, return a new function
+- * that evaluates whether a given feature (with a .properties or .tags property)
+- * passes its test.
++ * Create a set of CollisionBox objects for a line.
+  *
+- * @param {Array} filter mapbox gl filter
+- * @returns {Function} filter-evaluating function
++ * @param {Array<Point>} line
++ * @param {Anchor} anchor
++ * @param {number} labelLength The length of the label in geometry units.
++ * @param {Anchor} anchor The point along the line around which the label is anchored.
++ * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
++ * @param {number} boxSize The size of the collision boxes that will be created.
++ *
++ * @private
+  */
+-function createFilter(filter) {
+-    return new Function('f', 'var p = (f && f.properties || {}); return ' + compile(filter));
+-}
+-
+-function compile(filter) {
+-    if (!filter) return 'true';
+-    var op = filter[0];
+-    if (filter.length <= 1) return op === 'any' ? 'false' : 'true';
+-    var str =
+-        op === '==' ? compileComparisonOp(filter[1], filter[2], '===', false) :
+-        op === '!=' ? compileComparisonOp(filter[1], filter[2], '!==', false) :
+-        op === '<' ||
+-        op === '>' ||
+-        op === '<=' ||
+-        op === '>=' ? compileComparisonOp(filter[1], filter[2], op, true) :
+-        op === 'any' ? compileLogicalOp(filter.slice(1), '||') :
+-        op === 'all' ? compileLogicalOp(filter.slice(1), '&&') :
+-        op === 'none' ? compileNegation(compileLogicalOp(filter.slice(1), '||')) :
+-        op === 'in' ? compileInOp(filter[1], filter.slice(2)) :
+-        op === '!in' ? compileNegation(compileInOp(filter[1], filter.slice(2))) :
+-        op === 'has' ? compileHasOp(filter[1]) :
+-        op === '!has' ? compileNegation(compileHasOp([filter[1]])) :
+-        'true';
+-    return '(' + str + ')';
+-}
++CollisionFeature.prototype._addLineCollisionBoxes = function(collisionBoxArray, line, anchor, segment, labelLength, boxSize, featureIndex, sourceLayerIndex, bucketIndex) {
++    var step = boxSize / 2;
++    var nBoxes = Math.floor(labelLength / step);
+ 
+-function compilePropertyReference(property) {
+-    return property === '$type' ? 'f.type' : 'p[' + JSON.stringify(property) + ']';
+-}
++    // offset the center of the first box by half a box so that the edge of the
++    // box is at the edge of the label.
++    var firstBoxOffset = -boxSize / 2;
+ 
+-function compileComparisonOp(property, value, op, checkType) {
+-    var left = compilePropertyReference(property);
+-    var right = property === '$type' ? types.indexOf(value) : JSON.stringify(value);
+-    return (checkType ? 'typeof ' + left + '=== typeof ' + right + '&&' : '') + left + op + right;
+-}
++    var bboxes = this.boxes;
+ 
+-function compileLogicalOp(expressions, op) {
+-    return expressions.map(compile).join(op);
+-}
++    var p = anchor;
++    var index = segment + 1;
++    var anchorDistance = firstBoxOffset;
+ 
+-function compileInOp(property, values) {
+-    if (property === '$type') values = values.map(function(value) { return types.indexOf(value); });
+-    var left = JSON.stringify(values.sort(compare));
+-    var right = compilePropertyReference(property);
++    // move backwards along the line to the first segment the label appears on
++    do {
++        index--;
+ 
+-    if (values.length <= 200) return left + '.indexOf(' + right + ') !== -1';
++        // there isn't enough room for the label after the beginning of the line
++        // checkMaxAngle should have already caught this
++        if (index < 0) return bboxes;
+ 
+-    return 'function(v, a, i, j) {' +
+-        'while (i <= j) { var m = (i + j) >> 1;' +
+-        '    if (a[m] === v) return true; if (a[m] > v) j = m - 1; else i = m + 1;' +
+-        '}' +
+-    'return false; }(' + right + ', ' + left + ',0,' + (values.length - 1) + ')';
+-}
++        anchorDistance -= line[index].dist(p);
++        p = line[index];
++    } while (anchorDistance > -labelLength / 2);
+ 
+-function compileHasOp(property) {
+-    return JSON.stringify(property) + ' in p';
+-}
++    var segmentLength = line[index].dist(line[index + 1]);
+ 
+-function compileNegation(expression) {
+-    return '!(' + expression + ')';
+-}
++    for (var i = 0; i < nBoxes; i++) {
++        // the distance the box will be from the anchor
++        var boxDistanceToAnchor = -labelLength / 2 + i * step;
+ 
+-// Comparison function to sort numbers and strings
+-function compare(a, b) {
+-    return a < b ? -1 : a > b ? 1 : 0;
+-}
++        // the box is not on the current segment. Move to the next segment.
++        while (anchorDistance + segmentLength < boxDistanceToAnchor) {
++            anchorDistance += segmentLength;
++            index++;
+ 
+-},{}],123:[function(require,module,exports){
+-var geojsonArea = require('geojson-area');
++            // There isn't enough room before the end of the line.
++            if (index + 1 >= line.length) return bboxes;
+ 
+-module.exports = rewind;
++            segmentLength = line[index].dist(line[index + 1]);
++        }
+ 
+-function rewind(gj, outer) {
+-    switch ((gj && gj.type) || null) {
+-        case 'FeatureCollection':
+-            gj.features = gj.features.map(curryOuter(rewind, outer));
+-            return gj;
+-        case 'Feature':
+-            gj.geometry = rewind(gj.geometry, outer);
+-            return gj;
+-        case 'Polygon':
+-        case 'MultiPolygon':
+-            return correct(gj, outer);
+-        default:
+-            return gj;
+-    }
+-}
++        // the distance the box will be from the beginning of the segment
++        var segmentBoxDistance = boxDistanceToAnchor - anchorDistance;
+ 
+-function curryOuter(a, b) {
+-    return function(_) { return a(_, b); };
+-}
++        var p0 = line[index];
++        var p1 = line[index + 1];
++        var boxAnchorPoint = p1.sub(p0)._unit()._mult(segmentBoxDistance)._add(p0)._round();
+ 
+-function correct(_, outer) {
+-    if (_.type === 'Polygon') {
+-        _.coordinates = correctRings(_.coordinates, outer);
+-    } else if (_.type === 'MultiPolygon') {
+-        _.coordinates = _.coordinates.map(curryOuter(correctRings, outer));
+-    }
+-    return _;
+-}
++        var distanceToInnerEdge = Math.max(Math.abs(boxDistanceToAnchor - firstBoxOffset) - step / 2, 0);
++        var maxScale = labelLength / 2 / distanceToInnerEdge;
+ 
+-function correctRings(_, outer) {
+-    outer = !!outer;
+-    _[0] = wind(_[0], !outer);
+-    for (var i = 1; i < _.length; i++) {
+-        _[i] = wind(_[i], outer);
++        collisionBoxArray.emplaceBack(boxAnchorPoint.x, boxAnchorPoint.y,
++                -boxSize / 2, -boxSize / 2, boxSize / 2, boxSize / 2, maxScale,
++                featureIndex, sourceLayerIndex, bucketIndex,
++                0, 0, 0, 0, 0);
+     }
+-    return _;
+-}
+ 
+-function wind(_, dir) {
+-    return cw(_) === dir ? _ : _.reverse();
+-}
++    return bboxes;
++};
+ 
+-function cw(_) {
+-    return geojsonArea.ring(_) >= 0;
+-}
++},{}],128:[function(require,module,exports){
++'use strict';
+ 
+-},{"geojson-area":124}],124:[function(require,module,exports){
+-var wgs84 = require('wgs84');
++var Point = require('point-geometry');
++var EXTENT = require('../data/bucket').EXTENT;
++var Grid = require('grid-index');
+ 
+-module.exports.geometry = geometry;
+-module.exports.ring = ringArea;
++module.exports = CollisionTile;
+ 
+-function geometry(_) {
+-    if (_.type === 'Polygon') return polygonArea(_.coordinates);
+-    else if (_.type === 'MultiPolygon') {
+-        var area = 0;
+-        for (var i = 0; i < _.coordinates.length; i++) {
+-            area += polygonArea(_.coordinates[i]);
+-        }
+-        return area;
++/**
++ * A collision tile used to prevent symbols from overlapping. It keep tracks of
++ * where previous symbols have been placed and is used to check if a new
++ * symbol overlaps with any previously added symbols.
++ *
++ * @class CollisionTile
++ * @param {number} angle
++ * @param {number} pitch
++ * @private
++ */
++function CollisionTile(angle, pitch, collisionBoxArray) {
++    if (typeof angle === 'object') {
++        var serialized = angle;
++        collisionBoxArray = pitch;
++        angle = serialized.angle;
++        pitch = serialized.pitch;
++        this.grid = new Grid(serialized.grid);
++        this.ignoredGrid = new Grid(serialized.ignoredGrid);
+     } else {
+-        return null;
++        this.grid = new Grid(EXTENT, 12, 6);
++        this.ignoredGrid = new Grid(EXTENT, 12, 0);
+     }
+-}
+ 
+-function polygonArea(coords) {
+-    var area = 0;
+-    if (coords && coords.length > 0) {
+-        area += Math.abs(ringArea(coords[0]));
+-        for (var i = 1; i < coords.length; i++) {
+-            area -= Math.abs(ringArea(coords[i]));
+-        }
++    this.angle = angle;
++    this.pitch = pitch;
++
++    var sin = Math.sin(angle),
++        cos = Math.cos(angle);
++    this.rotationMatrix = [cos, -sin, sin, cos];
++    this.reverseRotationMatrix = [cos, sin, -sin, cos];
++
++    // Stretch boxes in y direction to account for the map tilt.
++    this.yStretch = 1 / Math.cos(pitch / 180 * Math.PI);
++
++    // The amount the map is squished depends on the y position.
++    // Sort of account for this by making all boxes a bit bigger.
++    this.yStretch = Math.pow(this.yStretch, 1.3);
++
++    this.collisionBoxArray = collisionBoxArray;
++    if (collisionBoxArray.length === 0) {
++        // the first collisionBoxArray is passed to a CollisionTile
++
++        // tempCollisionBox
++        collisionBoxArray.emplaceBack();
++
++        var maxInt16 = 32767;
++        //left
++        collisionBoxArray.emplaceBack(0, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
++        // right
++        collisionBoxArray.emplaceBack(EXTENT, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
++        // top
++        collisionBoxArray.emplaceBack(0, 0, -maxInt16, 0, maxInt16, 0, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
++        // bottom
++        collisionBoxArray.emplaceBack(0, EXTENT, -maxInt16, 0, maxInt16, 0, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
+     }
+-    return area;
++
++    this.tempCollisionBox = collisionBoxArray.get(0);
++    this.edges = [
++        collisionBoxArray.get(1),
++        collisionBoxArray.get(2),
++        collisionBoxArray.get(3),
++        collisionBoxArray.get(4)
++    ];
+ }
+ 
++CollisionTile.prototype.serialize = function() {
++    var data = {
++        angle: this.angle,
++        pitch: this.pitch,
++        grid: this.grid.toArrayBuffer(),
++        ignoredGrid: this.ignoredGrid.toArrayBuffer()
++    };
++    return {
++        data: data,
++        transferables: [data.grid, data.ignoredGrid]
++    };
++};
++
++CollisionTile.prototype.minScale = 0.25;
++CollisionTile.prototype.maxScale = 2;
++
++
+ /**
+- * Calculate the approximate area of the polygon were it projected onto
+- *     the earth.  Note that this area will be positive if ring is oriented
+- *     clockwise, otherwise it will be negative.
+- *
+- * Reference:
+- * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
+- *     Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
+- *     Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
++ * Find the scale at which the collisionFeature can be shown without
++ * overlapping with other features.
+  *
+- * Returns:
+- * {float} The approximate signed geodesic area of the polygon in square
+- *     meters.
++ * @param {CollisionFeature} collisionFeature
++ * @returns {number} placementScale
++ * @private
+  */
++CollisionTile.prototype.placeCollisionFeature = function(collisionFeature, allowOverlap, avoidEdges) {
+ 
+-function ringArea(coords) {
+-    var area = 0;
++    var collisionBoxArray = this.collisionBoxArray;
++    var minPlacementScale = this.minScale;
++    var rotationMatrix = this.rotationMatrix;
++    var yStretch = this.yStretch;
+ 
+-    if (coords.length > 2) {
+-        var p1, p2;
+-        for (var i = 0; i < coords.length - 1; i++) {
+-            p1 = coords[i];
+-            p2 = coords[i + 1];
+-            area += rad(p2[0] - p1[0]) * (2 + Math.sin(rad(p1[1])) + Math.sin(rad(p2[1])));
+-        }
++    for (var b = collisionFeature.boxStartIndex; b < collisionFeature.boxEndIndex; b++) {
+ 
+-        area = area * wgs84.RADIUS * wgs84.RADIUS / 2;
+-    }
++        var box = collisionBoxArray.get(b);
+ 
+-    return area;
+-}
++        var anchorPoint = box.anchorPoint._matMult(rotationMatrix);
++        var x = anchorPoint.x;
++        var y = anchorPoint.y;
+ 
+-function rad(_) {
+-    return _ * Math.PI / 180;
+-}
++        var x1 = x + box.x1;
++        var y1 = y + box.y1 * yStretch;
++        var x2 = x + box.x2;
++        var y2 = y + box.y2 * yStretch;
+ 
+-},{"wgs84":125}],125:[function(require,module,exports){
+-module.exports.RADIUS = 6378137;
+-module.exports.FLATTENING = 1/298.257223563;
+-module.exports.POLAR_RADIUS = 6356752.3142;
++        box.bbox0 = x1;
++        box.bbox1 = y1;
++        box.bbox2 = x2;
++        box.bbox3 = y2;
+ 
+-},{}],126:[function(require,module,exports){
+-'use strict';
++        if (!allowOverlap) {
++            var blockingBoxes = this.grid.query(x1, y1, x2, y2);
+ 
+-module.exports = clip;
++            for (var i = 0; i < blockingBoxes.length; i++) {
++                var blocking = collisionBoxArray.get(blockingBoxes[i]);
++                var blockingAnchorPoint = blocking.anchorPoint._matMult(rotationMatrix);
+ 
+-/* clip features between two axis-parallel lines:
+- *     |        |
+- *  ___|___     |     /
+- * /   |   \____|____/
+- *     |        |
+- */
++                minPlacementScale = this.getPlacementScale(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking);
++                if (minPlacementScale >= this.maxScale) {
++                    return minPlacementScale;
++                }
++            }
++        }
+ 
+-function clip(features, scale, k1, k2, axis, intersect, minAll, maxAll) {
++        if (avoidEdges) {
++            var rotatedCollisionBox;
+ 
+-    k1 /= scale;
+-    k2 /= scale;
++            if (this.angle) {
++                var reverseRotationMatrix = this.reverseRotationMatrix;
++                var tl = new Point(box.x1, box.y1).matMult(reverseRotationMatrix);
++                var tr = new Point(box.x2, box.y1).matMult(reverseRotationMatrix);
++                var bl = new Point(box.x1, box.y2).matMult(reverseRotationMatrix);
++                var br = new Point(box.x2, box.y2).matMult(reverseRotationMatrix);
+ 
+-    if (minAll >= k1 && maxAll <= k2) return features; // trivial accept
+-    else if (minAll > k2 || maxAll < k1) return null; // trivial reject
++                rotatedCollisionBox = this.tempCollisionBox;
++                rotatedCollisionBox.anchorPointX = box.anchorPoint.x;
++                rotatedCollisionBox.anchorPointY = box.anchorPoint.y;
++                rotatedCollisionBox.x1 = Math.min(tl.x, tr.x, bl.x, br.x);
++                rotatedCollisionBox.y1 = Math.min(tl.y, tr.x, bl.x, br.x);
++                rotatedCollisionBox.x2 = Math.max(tl.x, tr.x, bl.x, br.x);
++                rotatedCollisionBox.y2 = Math.max(tl.y, tr.x, bl.x, br.x);
++                rotatedCollisionBox.maxScale = box.maxScale;
++            } else {
++                rotatedCollisionBox = box;
++            }
+ 
+-    var clipped = [];
++            for (var k = 0; k < this.edges.length; k++) {
++                var edgeBox = this.edges[k];
++                minPlacementScale = this.getPlacementScale(minPlacementScale, box.anchorPoint, rotatedCollisionBox, edgeBox.anchorPoint, edgeBox);
++                if (minPlacementScale >= this.maxScale) {
++                    return minPlacementScale;
++                }
++            }
++        }
++    }
+ 
+-    for (var i = 0; i < features.length; i++) {
++    return minPlacementScale;
++};
+ 
+-        var feature = features[i],
+-            geometry = feature.geometry,
+-            type = feature.type,
+-            min, max;
++CollisionTile.prototype.queryRenderedSymbols = function(minX, minY, maxX, maxY, scale) {
++    var sourceLayerFeatures = {};
++    var result = [];
+ 
+-        min = feature.min[axis];
+-        max = feature.max[axis];
++    var collisionBoxArray = this.collisionBoxArray;
++    var rotationMatrix = this.rotationMatrix;
++    var anchorPoint = new Point(minX, minY)._matMult(rotationMatrix);
+ 
+-        if (min >= k1 && max <= k2) { // trivial accept
+-            clipped.push(feature);
+-            continue;
+-        } else if (min > k2 || max < k1) continue; // trivial reject
++    var queryBox = this.tempCollisionBox;
++    queryBox.anchorX = anchorPoint.x;
++    queryBox.anchorY = anchorPoint.y;
++    queryBox.x1 = 0;
++    queryBox.y1 = 0;
++    queryBox.x2 = maxX - minX;
++    queryBox.y2 = maxY - minY;
++    queryBox.maxScale = scale;
+ 
+-        var slices = type === 1 ?
+-                clipPoints(geometry, k1, k2, axis) :
+-                clipGeometry(geometry, k1, k2, axis, intersect, type === 3);
++    // maxScale is stored using a Float32. Convert `scale` to the stored Float32 value.
++    scale = queryBox.maxScale;
+ 
+-        if (slices.length) {
+-            // if a feature got clipped, it will likely get clipped on the next zoom level as well,
+-            // so there's no need to recalculate bboxes
+-            clipped.push({
+-                geometry: slices,
+-                type: type,
+-                tags: features[i].tags || null,
+-                min: feature.min,
+-                max: feature.max
+-            });
+-        }
++    var searchBox = [
++        anchorPoint.x + queryBox.x1 / scale,
++        anchorPoint.y + queryBox.y1 / scale * this.yStretch,
++        anchorPoint.x + queryBox.x2 / scale,
++        anchorPoint.y + queryBox.y2 / scale * this.yStretch
++    ];
++
++    var blockingBoxKeys = this.grid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
++    var blockingBoxKeys2 = this.ignoredGrid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
++    for (var k = 0; k < blockingBoxKeys2.length; k++) {
++        blockingBoxKeys.push(blockingBoxKeys2[k]);
+     }
+ 
+-    return clipped.length ? clipped : null;
+-}
+-
+-function clipPoints(geometry, k1, k2, axis) {
+-    var slice = [];
++    for (var i = 0; i < blockingBoxKeys.length; i++) {
++        var blocking = collisionBoxArray.get(blockingBoxKeys[i]);
+ 
+-    for (var i = 0; i < geometry.length; i++) {
+-        var a = geometry[i],
+-            ak = a[axis];
++        var sourceLayer = blocking.sourceLayerIndex;
++        var featureIndex = blocking.featureIndex;
++        if (sourceLayerFeatures[sourceLayer] === undefined) {
++            sourceLayerFeatures[sourceLayer] = {};
++        }
+ 
+-        if (ak >= k1 && ak <= k2) slice.push(a);
++        if (!sourceLayerFeatures[sourceLayer][featureIndex]) {
++            var blockingAnchorPoint = blocking.anchorPoint.matMult(rotationMatrix);
++            var minPlacementScale = this.getPlacementScale(this.minScale, anchorPoint, queryBox, blockingAnchorPoint, blocking);
++            if (minPlacementScale >= scale) {
++                sourceLayerFeatures[sourceLayer][featureIndex] = true;
++                result.push(blockingBoxKeys[i]);
++            }
++        }
+     }
+-    return slice;
+-}
+ 
+-function clipGeometry(geometry, k1, k2, axis, intersect, closed) {
++    return result;
++};
+ 
+-    var slices = [];
++CollisionTile.prototype.getPlacementScale = function(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking) {
+ 
+-    for (var i = 0; i < geometry.length; i++) {
++    // Find the lowest scale at which the two boxes can fit side by side without overlapping.
++    // Original algorithm:
++    var anchorDiffX = anchorPoint.x - blockingAnchorPoint.x;
++    var anchorDiffY = anchorPoint.y - blockingAnchorPoint.y;
++    var s1 = (blocking.x1 - box.x2) / anchorDiffX; // scale at which new box is to the left of old box
++    var s2 = (blocking.x2 - box.x1) / anchorDiffX; // scale at which new box is to the right of old box
++    var s3 = (blocking.y1 - box.y2) * this.yStretch / anchorDiffY; // scale at which new box is to the top of old box
++    var s4 = (blocking.y2 - box.y1) * this.yStretch / anchorDiffY; // scale at which new box is to the bottom of old box
+ 
+-        var ak = 0,
+-            bk = 0,
+-            b = null,
+-            points = geometry[i],
+-            area = points.area,
+-            dist = points.dist,
+-            len = points.length,
+-            a, j, last;
++    if (isNaN(s1) || isNaN(s2)) s1 = s2 = 1;
++    if (isNaN(s3) || isNaN(s4)) s3 = s4 = 1;
+ 
+-        var slice = [];
++    var collisionFreeScale = Math.min(Math.max(s1, s2), Math.max(s3, s4));
++    var blockingMaxScale = blocking.maxScale;
++    var boxMaxScale = box.maxScale;
+ 
+-        for (j = 0; j < len - 1; j++) {
+-            a = b || points[j];
+-            b = points[j + 1];
+-            ak = bk || a[axis];
+-            bk = b[axis];
++    if (collisionFreeScale > blockingMaxScale) {
++        // After a box's maxScale the label has shrunk enough that the box is no longer needed to cover it,
++        // so unblock the new box at the scale that the old box disappears.
++        collisionFreeScale = blockingMaxScale;
++    }
+ 
+-            if (ak < k1) {
++    if (collisionFreeScale > boxMaxScale) {
++        // If the box can only be shown after it is visible, then the box can never be shown.
++        // But the label can be shown after this box is not visible.
++        collisionFreeScale = boxMaxScale;
++    }
+ 
+-                if ((bk > k2)) { // ---|-----|-->
+-                    slice.push(intersect(a, b, k1), intersect(a, b, k2));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
++    if (collisionFreeScale > minPlacementScale &&
++            collisionFreeScale >= blocking.placementScale) {
++        // If this collision occurs at a lower scale than previously found collisions
++        // and the collision occurs while the other label is visible
+ 
+-                } else if (bk >= k1) slice.push(intersect(a, b, k1)); // ---|-->  |
++        // this this is the lowest scale at which the label won't collide with anything
++        minPlacementScale = collisionFreeScale;
++    }
+ 
+-            } else if (ak > k2) {
++    return minPlacementScale;
++};
+ 
+-                if ((bk < k1)) { // <--|-----|---
+-                    slice.push(intersect(a, b, k2), intersect(a, b, k1));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
+ 
+-                } else if (bk <= k2) slice.push(intersect(a, b, k2)); // |  <--|---
++/**
++ * Remember this collisionFeature and what scale it was placed at to block
++ * later features from overlapping with it.
++ *
++ * @param {CollisionFeature} collisionFeature
++ * @param {number} minPlacementScale
++ * @private
++ */
++CollisionTile.prototype.insertCollisionFeature = function(collisionFeature, minPlacementScale, ignorePlacement) {
+ 
+-            } else {
++    var grid = ignorePlacement ? this.ignoredGrid : this.grid;
++    var collisionBoxArray = this.collisionBoxArray;
+ 
+-                slice.push(a);
++    for (var k = collisionFeature.boxStartIndex; k < collisionFeature.boxEndIndex; k++) {
++        var box = collisionBoxArray.get(k);
++        box.placementScale = minPlacementScale;
++        if (minPlacementScale < this.maxScale) {
++            grid.insert(k, box.bbox0, box.bbox1, box.bbox2, box.bbox3);
++        }
++    }
++};
+ 
+-                if (bk < k1) { // <--|---  |
+-                    slice.push(intersect(a, b, k1));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
++},{"../data/bucket":67,"grid-index":34,"point-geometry":174}],129:[function(require,module,exports){
++'use strict';
+ 
+-                } else if (bk > k2) { // |  ---|-->
+-                    slice.push(intersect(a, b, k2));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
+-                }
+-                // | --> |
+-            }
+-        }
++var interpolate = require('../util/interpolate');
++var Anchor = require('../symbol/anchor');
++var checkMaxAngle = require('./check_max_angle');
+ 
+-        // add the last point
+-        a = points[len - 1];
+-        ak = a[axis];
+-        if (ak >= k1 && ak <= k2) slice.push(a);
++module.exports = getAnchors;
+ 
+-        // close the polygon if its endpoints are not the same after clipping
++function getAnchors(line, spacing, maxAngle, shapedText, shapedIcon, glyphSize, boxScale, overscaling, tileExtent) {
+ 
+-        last = slice[slice.length - 1];
+-        if (closed && last && (slice[0][0] !== last[0] || slice[0][1] !== last[1])) slice.push(slice[0]);
++    // Resample a line to get anchor points for labels and check that each
++    // potential label passes text-max-angle check and has enough froom to fit
++    // on the line.
+ 
+-        // add the final slice
+-        newSlice(slices, slice, area, dist);
+-    }
++    var angleWindowSize = shapedText ?
++        3 / 5 * glyphSize * boxScale :
++        0;
+ 
+-    return slices;
+-}
++    var labelLength = Math.max(
++        shapedText ? shapedText.right - shapedText.left : 0,
++        shapedIcon ? shapedIcon.right - shapedIcon.left : 0);
+ 
+-function newSlice(slices, slice, area, dist) {
+-    if (slice.length) {
+-        // we don't recalculate the area/length of the unclipped geometry because the case where it goes
+-        // below the visibility threshold as a result of clipping is rare, so we avoid doing unnecessary work
+-        slice.area = area;
+-        slice.dist = dist;
++    // Is the line continued from outside the tile boundary?
++    var isLineContinued = line[0].x === 0 || line[0].x === tileExtent || line[0].y === 0 || line[0].y === tileExtent;
+ 
+-        slices.push(slice);
++    // Is the label long, relative to the spacing?
++    // If so, adjust the spacing so there is always a minimum space of `spacing / 4` between label edges.
++    if (spacing - labelLength * boxScale  < spacing / 4) {
++        spacing = labelLength * boxScale + spacing / 4;
+     }
+-    return [];
+-}
+ 
+-},{}],127:[function(require,module,exports){
+-'use strict';
++    // Offset the first anchor by:
++    // Either half the label length plus a fixed extra offset if the line is not continued
++    // Or half the spacing if the line is continued.
+ 
+-module.exports = convert;
++    // For non-continued lines, add a bit of fixed extra offset to avoid collisions at T intersections.
++    var fixedExtraOffset = glyphSize * 2;
+ 
+-var simplify = require('./simplify');
++    var offset = !isLineContinued ?
++        ((labelLength / 2 + fixedExtraOffset) * boxScale * overscaling) % spacing :
++        (spacing / 2 * overscaling) % spacing;
+ 
+-// converts GeoJSON feature into an intermediate projected JSON vector format with simplification data
++    return resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength * boxScale, isLineContinued, false, tileExtent);
++}
+ 
+-function convert(data, tolerance) {
+-    var features = [];
+ 
+-    if (data.type === 'FeatureCollection') {
+-        for (var i = 0; i < data.features.length; i++) {
+-            convertFeature(features, data.features[i], tolerance);
+-        }
+-    } else if (data.type === 'Feature') {
+-        convertFeature(features, data, tolerance);
++function resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, placeAtMiddle, tileExtent) {
+ 
+-    } else {
+-        // single geometry or a geometry collection
+-        convertFeature(features, {geometry: data}, tolerance);
++    var halfLabelLength = labelLength / 2;
++    var lineLength = 0;
++    for (var k = 0; k < line.length - 1; k++) {
++        lineLength += line[k].dist(line[k + 1]);
+     }
+-    return features;
+-}
+ 
+-function convertFeature(features, feature, tolerance) {
+-    var geom = feature.geometry,
+-        type = geom.type,
+-        coords = geom.coordinates,
+-        tags = feature.properties,
+-        i, j, rings;
++    var distance = 0,
++        markedDistance = offset - spacing;
+ 
+-    if (type === 'Point') {
+-        features.push(create(tags, 1, [projectPoint(coords)]));
++    var anchors = [];
+ 
+-    } else if (type === 'MultiPoint') {
+-        features.push(create(tags, 1, project(coords)));
++    for (var i = 0; i < line.length - 1; i++) {
+ 
+-    } else if (type === 'LineString') {
+-        features.push(create(tags, 2, [project(coords, tolerance)]));
++        var a = line[i],
++            b = line[i + 1];
+ 
+-    } else if (type === 'MultiLineString' || type === 'Polygon') {
+-        rings = [];
+-        for (i = 0; i < coords.length; i++) {
+-            rings.push(project(coords[i], tolerance));
+-        }
+-        features.push(create(tags, type === 'Polygon' ? 3 : 2, rings));
++        var segmentDist = a.dist(b),
++            angle = b.angleTo(a);
+ 
+-    } else if (type === 'MultiPolygon') {
+-        rings = [];
+-        for (i = 0; i < coords.length; i++) {
+-            for (j = 0; j < coords[i].length; j++) {
+-                rings.push(project(coords[i][j], tolerance));
++        while (markedDistance + spacing < distance + segmentDist) {
++            markedDistance += spacing;
++
++            var t = (markedDistance - distance) / segmentDist,
++                x = interpolate(a.x, b.x, t),
++                y = interpolate(a.y, b.y, t);
++
++            // Check that the point is within the tile boundaries and that
++            // the label would fit before the beginning and end of the line
++            // if placed at this point.
++            if (x >= 0 && x < tileExtent && y >= 0 && y < tileExtent &&
++                    markedDistance - halfLabelLength >= 0 &&
++                    markedDistance + halfLabelLength <= lineLength) {
++                var anchor = new Anchor(x, y, angle, i)._round();
++
++                if (!angleWindowSize || checkMaxAngle(line, anchor, labelLength, angleWindowSize, maxAngle)) {
++                    anchors.push(anchor);
++                }
+             }
+         }
+-        features.push(create(tags, 3, rings));
+ 
+-    } else if (type === 'GeometryCollection') {
+-        for (i = 0; i < geom.geometries.length; i++) {
+-            convertFeature(features, {
+-                geometry: geom.geometries[i],
+-                properties: tags
+-            }, tolerance);
+-        }
++        distance += segmentDist;
++    }
+ 
+-    } else {
+-        throw new Error('Input data is not a valid GeoJSON object.');
++    if (!placeAtMiddle && !anchors.length && !isLineContinued) {
++        // The first attempt at finding anchors at which labels can be placed failed.
++        // Try again, but this time just try placing one anchor at the middle of the line.
++        // This has the most effect for short lines in overscaled tiles, since the
++        // initial offset used in overscaled tiles is calculated to align labels with positions in
++        // parent tiles instead of placing the label as close to the beginning as possible.
++        anchors = resample(line, distance / 2, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, true, tileExtent);
+     }
+-}
+ 
+-function create(tags, type, geometry) {
+-    var feature = {
+-        geometry: geometry,
+-        type: type,
+-        tags: tags || null,
+-        min: [2, 1], // initial bbox values;
+-        max: [-1, 0]  // note that coords are usually in [0..1] range
+-    };
+-    calcBBox(feature);
+-    return feature;
++    return anchors;
+ }
+ 
+-function project(lonlats, tolerance) {
+-    var projected = [];
+-    for (var i = 0; i < lonlats.length; i++) {
+-        projected.push(projectPoint(lonlats[i]));
+-    }
+-    if (tolerance) {
+-        simplify(projected, tolerance);
+-        calcSize(projected);
+-    }
+-    return projected;
+-}
++},{"../symbol/anchor":123,"../util/interpolate":163,"./check_max_angle":124}],130:[function(require,module,exports){
++'use strict';
+ 
+-function projectPoint(p) {
+-    var sin = Math.sin(p[1] * Math.PI / 180),
+-        x = (p[0] / 360 + 0.5),
+-        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
++var ShelfPack = require('shelf-pack');
+ 
+-    y = y < -1 ? -1 :
+-        y > 1 ? 1 : y;
++module.exports = GlyphAtlas;
++function GlyphAtlas(width, height) {
++    this.width = width;
++    this.height = height;
+ 
+-    return [x, y, 0];
++    this.bin = new ShelfPack(width, height);
++    this.index = {};
++    this.ids = {};
++    this.data = new Uint8Array(width * height);
+ }
+ 
+-// calculate area and length of the poly
+-function calcSize(points) {
+-    var area = 0,
+-        dist = 0;
+-
+-    for (var i = 0, a, b; i < points.length - 1; i++) {
+-        a = b || points[i];
+-        b = points[i + 1];
++GlyphAtlas.prototype.getGlyphs = function() {
++    var glyphs = {},
++        split,
++        name,
++        id;
+ 
+-        area += a[0] * b[1] - b[0] * a[1];
++    for (var key in this.ids) {
++        split = key.split('#');
++        name = split[0];
++        id = split[1];
+ 
+-        // use Manhattan distance instead of Euclidian one to avoid expensive square root computation
+-        dist += Math.abs(b[0] - a[0]) + Math.abs(b[1] - a[1]);
++        if (!glyphs[name]) glyphs[name] = [];
++        glyphs[name].push(id);
+     }
+-    points.area = Math.abs(area / 2);
+-    points.dist = dist;
+-}
+ 
+-// calculate the feature bounding box for faster clipping later
+-function calcBBox(feature) {
+-    var geometry = feature.geometry,
+-        min = feature.min,
+-        max = feature.max;
++    return glyphs;
++};
+ 
+-    if (feature.type === 1) calcRingBBox(min, max, geometry);
+-    else for (var i = 0; i < geometry.length; i++) calcRingBBox(min, max, geometry[i]);
++GlyphAtlas.prototype.getRects = function() {
++    var rects = {},
++        split,
++        name,
++        id;
+ 
+-    return feature;
+-}
++    for (var key in this.ids) {
++        split = key.split('#');
++        name = split[0];
++        id = split[1];
+ 
+-function calcRingBBox(min, max, points) {
+-    for (var i = 0, p; i < points.length; i++) {
+-        p = points[i];
+-        min[0] = Math.min(p[0], min[0]);
+-        max[0] = Math.max(p[0], max[0]);
+-        min[1] = Math.min(p[1], min[1]);
+-        max[1] = Math.max(p[1], max[1]);
++        if (!rects[name]) rects[name] = {};
++        rects[name][id] = this.index[key];
+     }
+-}
+-
+-},{"./simplify":129}],128:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = geojsonvt;
+ 
+-var convert = require('./convert'),     // GeoJSON conversion and preprocessing
+-    transform = require('./transform'), // coordinate transformation
+-    clip = require('./clip'),           // stripe clipping algorithm
+-    wrap = require('./wrap'),           // date line processing
+-    createTile = require('./tile');     // final simplified tile generation
++    return rects;
++};
+ 
+ 
+-function geojsonvt(data, options) {
+-    return new GeoJSONVT(data, options);
+-}
++GlyphAtlas.prototype.addGlyph = function(id, name, glyph, buffer) {
++    if (!glyph) {
++        // console.warn('missing glyph', code, String.fromCharCode(code));
++        return null;
++    }
++    var key = name + "#" + glyph.id;
+ 
+-function GeoJSONVT(data, options) {
+-    options = this.options = extend(Object.create(this.options), options);
++    // The glyph is already in this texture.
++    if (this.index[key]) {
++        if (this.ids[key].indexOf(id) < 0) {
++            this.ids[key].push(id);
++        }
++        return this.index[key];
++    }
+ 
+-    var debug = options.debug;
++    // The glyph bitmap has zero width.
++    if (!glyph.bitmap) {
++        return null;
++    }
+ 
+-    if (debug) console.time('preprocess data');
++    var bufferedWidth = glyph.width + buffer * 2;
++    var bufferedHeight = glyph.height + buffer * 2;
+ 
+-    var z2 = 1 << options.maxZoom, // 2^z
+-        features = convert(data, options.tolerance / (z2 * options.extent));
++    // Add a 1px border around every image.
++    var padding = 1;
++    var packWidth = bufferedWidth + 2 * padding;
++    var packHeight = bufferedHeight + 2 * padding;
+ 
+-    this.tiles = {};
+-    this.tileCoords = [];
++    // Increase to next number divisible by 4, but at least 1.
++    // This is so we can scale down the texture coordinates and pack them
++    // into 2 bytes rather than 4 bytes.
++    packWidth += (4 - packWidth % 4);
++    packHeight += (4 - packHeight % 4);
+ 
+-    if (debug) {
+-        console.timeEnd('preprocess data');
+-        console.log('index: maxZoom: %d, maxPoints: %d', options.indexMaxZoom, options.indexMaxPoints);
+-        console.time('generate tiles');
+-        this.stats = {};
+-        this.total = 0;
++    var rect = this.bin.packOne(packWidth, packHeight);
++    if (!rect) {
++        this.resize();
++        rect = this.bin.packOne(packWidth, packHeight);
++    }
++    if (!rect) {
++        console.warn('glyph bitmap overflow');
++        return null;
+     }
+ 
+-    features = wrap(features, options.buffer / options.extent, intersectX);
+-
+-    // start slicing from the top tile down
+-    if (features.length) this.splitTile(features, 0, 0, 0);
++    this.index[key] = rect;
++    this.ids[key] = [id];
+ 
+-    if (debug) {
+-        if (features.length) console.log('features: %d, points: %d', this.tiles[0].numFeatures, this.tiles[0].numPoints);
+-        console.timeEnd('generate tiles');
+-        console.log('tiles generated:', this.total, JSON.stringify(this.stats));
++    var target = this.data;
++    var source = glyph.bitmap;
++    for (var y = 0; y < bufferedHeight; y++) {
++        var y1 = this.width * (rect.y + y + padding) + rect.x + padding;
++        var y2 = bufferedWidth * y;
++        for (var x = 0; x < bufferedWidth; x++) {
++            target[y1 + x] = source[y2 + x];
++        }
+     }
+-}
+ 
+-GeoJSONVT.prototype.options = {
+-    maxZoom: 14,            // max zoom to preserve detail on
+-    indexMaxZoom: 5,        // max zoom in the tile index
+-    indexMaxPoints: 100000, // max number of points per tile in the tile index
+-    solidChildren: false,   // whether to tile solid square tiles further
+-    tolerance: 3,           // simplification tolerance (higher means simpler)
+-    extent: 4096,           // tile extent
+-    buffer: 64,             // tile buffer on each side
+-    debug: 0                // logging level (0, 1 or 2)
+-};
++    this.dirty = true;
+ 
+-GeoJSONVT.prototype.splitTile = function (features, z, x, y, cz, cx, cy) {
++    return rect;
++};
+ 
+-    var stack = [features, z, x, y],
+-        options = this.options,
+-        debug = options.debug,
+-        solid = null;
++GlyphAtlas.prototype.resize = function() {
++    var origw = this.width,
++        origh = this.height;
+ 
+-    // avoid recursion by using a processing queue
+-    while (stack.length) {
+-        y = stack.pop();
+-        x = stack.pop();
+-        z = stack.pop();
+-        features = stack.pop();
++    // For now, don't grow the atlas beyond 1024x1024 because of how
++    // texture coords pack into unsigned byte in symbol bucket.
++    if (origw > 512 || origh > 512) return;
+ 
+-        var z2 = 1 << z,
+-            id = toID(z, x, y),
+-            tile = this.tiles[id],
+-            tileTolerance = z === options.maxZoom ? 0 : options.tolerance / (z2 * options.extent);
++    if (this.texture) {
++        if (this.gl) {
++            this.gl.deleteTexture(this.texture);
++        }
++        this.texture = null;
++    }
+ 
+-        if (!tile) {
+-            if (debug > 1) console.time('creation');
++    this.width *= 2;
++    this.height *= 2;
++    this.bin.resize(this.width, this.height);
+ 
+-            tile = this.tiles[id] = createTile(features, z2, x, y, tileTolerance, z === options.maxZoom);
+-            this.tileCoords.push({z: z, x: x, y: y});
++    var buf = new ArrayBuffer(this.width * this.height),
++        src, dst;
++    for (var i = 0; i < origh; i++) {
++        src = new Uint8Array(this.data.buffer, origh * i, origw);
++        dst = new Uint8Array(buf, origh * i * 2, origw);
++        dst.set(src);
++    }
++    this.data = new Uint8Array(buf);
++};
+ 
+-            if (debug) {
+-                if (debug > 1) {
+-                    console.log('tile z%d-%d-%d (features: %d, points: %d, simplified: %d)',
+-                        z, x, y, tile.numFeatures, tile.numPoints, tile.numSimplified);
+-                    console.timeEnd('creation');
+-                }
+-                var key = 'z' + z;
+-                this.stats[key] = (this.stats[key] || 0) + 1;
+-                this.total++;
+-            }
+-        }
++GlyphAtlas.prototype.bind = function(gl) {
++    this.gl = gl;
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, this.width, this.height, 0, gl.ALPHA, gl.UNSIGNED_BYTE, null);
+ 
+-        // save reference to original geometry in tile so that we can drill down later if we stop now
+-        tile.source = features;
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++    }
++};
+ 
+-        // if it's the first-pass tiling
+-        if (!cz) {
+-            // stop tiling if we reached max zoom, or if the tile is too simple
+-            if (z === options.indexMaxZoom || tile.numPoints <= options.indexMaxPoints) continue;
++GlyphAtlas.prototype.updateTexture = function(gl) {
++    this.bind(gl);
++    if (this.dirty) {
++        gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.ALPHA, gl.UNSIGNED_BYTE, this.data);
++        this.dirty = false;
++    }
++};
+ 
+-        // if a drilldown to a specific tile
+-        } else {
+-            // stop tiling if we reached base zoom or our target tile zoom
+-            if (z === options.maxZoom || z === cz) continue;
++},{"shelf-pack":177}],131:[function(require,module,exports){
++'use strict';
+ 
+-            // stop tiling if it's not an ancestor of the target tile
+-            var m = 1 << (cz - z);
+-            if (x !== Math.floor(cx / m) || y !== Math.floor(cy / m)) continue;
+-        }
++var normalizeURL = require('../util/mapbox').normalizeGlyphsURL;
++var getArrayBuffer = require('../util/ajax').getArrayBuffer;
++var Glyphs = require('../util/glyphs');
++var GlyphAtlas = require('../symbol/glyph_atlas');
++var Protobuf = require('pbf');
+ 
+-        // stop tiling if the tile is solid clipped square
+-        if (!options.solidChildren && isClippedSquare(tile, options.extent, options.buffer)) {
+-            if (cz) solid = z; // and remember the zoom if we're drilling down
+-            continue;
+-        }
++module.exports = GlyphSource;
+ 
+-        // if we slice further down, no need to keep source geometry
+-        tile.source = null;
++/**
++ * A glyph source has a URL from which to load new glyphs and manages
++ * GlyphAtlases in which to store glyphs used by the requested fontstacks
++ * and ranges.
++ *
++ * @param {string} url glyph template url
++ * @private
++ */
++function GlyphSource(url) {
++    this.url = url && normalizeURL(url);
++    this.atlases = {};
++    this.stacks = {};
++    this.loading = {};
++}
+ 
+-        if (debug > 1) console.time('clipping');
++GlyphSource.prototype.getSimpleGlyphs = function(fontstack, glyphIDs, uid, callback) {
++    if (this.stacks[fontstack] === undefined) {
++        this.stacks[fontstack] = {};
++    }
++    if (this.atlases[fontstack] === undefined) {
++        this.atlases[fontstack] = new GlyphAtlas(128, 128);
++    }
+ 
+-        // values we'll use for clipping
+-        var k1 = 0.5 * options.buffer / options.extent,
+-            k2 = 0.5 - k1,
+-            k3 = 0.5 + k1,
+-            k4 = 1 + k1,
+-            tl, bl, tr, br, left, right;
++    var glyphs = {};
++    var stack = this.stacks[fontstack];
++    var atlas = this.atlases[fontstack];
+ 
+-        tl = bl = tr = br = null;
++    // the number of pixels the sdf bitmaps are padded by
++    var buffer = 3;
+ 
+-        left  = clip(features, z2, x - k1, x + k3, 0, intersectX, tile.min[0], tile.max[0]);
+-        right = clip(features, z2, x + k2, x + k4, 0, intersectX, tile.min[0], tile.max[0]);
++    var missing = {};
++    var remaining = 0;
++    var range;
+ 
+-        if (left) {
+-            tl = clip(left, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
+-            bl = clip(left, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
+-        }
++    for (var i = 0; i < glyphIDs.length; i++) {
++        var glyphID = glyphIDs[i];
++        range = Math.floor(glyphID / 256);
+ 
+-        if (right) {
+-            tr = clip(right, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
+-            br = clip(right, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
++        if (stack[range]) {
++            var glyph = stack[range].glyphs[glyphID];
++            var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
++            if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
++        } else {
++            if (missing[range] === undefined) {
++                missing[range] = [];
++                remaining++;
++            }
++            missing[range].push(glyphID);
+         }
+-
+-        if (debug > 1) console.timeEnd('clipping');
+-
+-        if (tl) stack.push(tl, z + 1, x * 2,     y * 2);
+-        if (bl) stack.push(bl, z + 1, x * 2,     y * 2 + 1);
+-        if (tr) stack.push(tr, z + 1, x * 2 + 1, y * 2);
+-        if (br) stack.push(br, z + 1, x * 2 + 1, y * 2 + 1);
+     }
+ 
+-    return solid;
+-};
+-
+-GeoJSONVT.prototype.getTile = function (z, x, y) {
+-    var options = this.options,
+-        extent = options.extent,
+-        debug = options.debug;
++    if (!remaining) callback(undefined, glyphs, fontstack);
+ 
+-    var z2 = 1 << z;
+-    x = ((x % z2) + z2) % z2; // wrap tile x coordinate
++    var onRangeLoaded = function(err, range, data) {
++        // TODO not be silent about errors
++        if (!err) {
++            var stack = this.stacks[fontstack][range] = data.stacks[0];
++            for (var i = 0; i < missing[range].length; i++) {
++                var glyphID = missing[range][i];
++                var glyph = stack.glyphs[glyphID];
++                var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
++                if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
++            }
++        }
++        remaining--;
++        if (!remaining) callback(undefined, glyphs, fontstack);
++    }.bind(this);
+ 
+-    var id = toID(z, x, y);
+-    if (this.tiles[id]) return transform.tile(this.tiles[id], extent);
++    for (var r in missing) {
++        this.loadRange(fontstack, r, onRangeLoaded);
++    }
++};
+ 
+-    if (debug > 1) console.log('drilling down to z%d-%d-%d', z, x, y);
++// A simplified representation of the glyph containing only the properties needed for shaping.
++function SimpleGlyph(glyph, rect, buffer) {
++    var padding = 1;
++    this.advance = glyph.advance;
++    this.left = glyph.left - buffer - padding;
++    this.top = glyph.top + buffer + padding;
++    this.rect = rect;
++}
+ 
+-    var z0 = z,
+-        x0 = x,
+-        y0 = y,
+-        parent;
++GlyphSource.prototype.loadRange = function(fontstack, range, callback) {
++    if (range * 256 > 65535) return callback('glyphs > 65535 not supported');
+ 
+-    while (!parent && z0 > 0) {
+-        z0--;
+-        x0 = Math.floor(x0 / 2);
+-        y0 = Math.floor(y0 / 2);
+-        parent = this.tiles[toID(z0, x0, y0)];
++    if (this.loading[fontstack] === undefined) {
++        this.loading[fontstack] = {};
+     }
++    var loading = this.loading[fontstack];
+ 
+-    if (!parent || !parent.source) return null;
+-
+-    // if we found a parent tile containing the original geometry, we can drill down from it
+-    if (debug > 1) console.log('found parent tile z%d-%d-%d', z0, x0, y0);
+-
+-    // it parent tile is a solid clipped square, return it instead since it's identical
+-    if (isClippedSquare(parent, extent, options.buffer)) return transform.tile(parent, extent);
++    if (loading[range]) {
++        loading[range].push(callback);
++    } else {
++        loading[range] = [callback];
+ 
+-    if (debug > 1) console.time('drilling down');
+-    var solid = this.splitTile(parent.source, z0, x0, y0, z, x, y);
+-    if (debug > 1) console.timeEnd('drilling down');
++        var rangeName = (range * 256) + '-' + (range * 256 + 255);
++        var url = glyphUrl(fontstack, rangeName, this.url);
+ 
+-    // one of the parent tiles was a solid clipped square
+-    if (solid !== null) {
+-        var m = 1 << (z - solid);
+-        id = toID(solid, Math.floor(x / m), Math.floor(y / m));
++        getArrayBuffer(url, function(err, data) {
++            var glyphs = !err && new Glyphs(new Protobuf(new Uint8Array(data)));
++            for (var i = 0; i < loading[range].length; i++) {
++                loading[range][i](err, range, glyphs);
++            }
++            delete loading[range];
++        });
+     }
++};
+ 
+-    return this.tiles[id] ? transform.tile(this.tiles[id], extent) : null;
++GlyphSource.prototype.getGlyphAtlas = function(fontstack) {
++    return this.atlases[fontstack];
+ };
+ 
+-function toID(z, x, y) {
+-    return (((1 << z) * y + x) * 32) + z;
+-}
++/**
++ * Use CNAME sharding to load a specific glyph range over a randomized
++ * but consistent subdomain.
++ * @param {string} fontstack comma-joined fonts
++ * @param {string} range comma-joined range
++ * @param {url} url templated url
++ * @param {string} [subdomains=abc] subdomains as a string where each letter is one.
++ * @returns {string} a url to load that section of glyphs
++ * @private
++ */
++function glyphUrl(fontstack, range, url, subdomains) {
++    subdomains = subdomains || 'abc';
+ 
+-function intersectX(a, b, x) {
+-    return [x, (x - a[0]) * (b[1] - a[1]) / (b[0] - a[0]) + a[1], 1];
+-}
+-function intersectY(a, b, y) {
+-    return [(y - a[1]) * (b[0] - a[0]) / (b[1] - a[1]) + a[0], y, 1];
++    return url
++        .replace('{s}', subdomains[fontstack.length % subdomains.length])
++        .replace('{fontstack}', fontstack)
++        .replace('{range}', range);
+ }
+ 
+-function extend(dest, src) {
+-    for (var i in src) dest[i] = src[i];
+-    return dest;
+-}
++},{"../symbol/glyph_atlas":130,"../util/ajax":154,"../util/glyphs":162,"../util/mapbox":166,"pbf":173}],132:[function(require,module,exports){
++'use strict';
+ 
+-// checks whether a tile is a whole-area fill after clipping; if it is, there's no sense slicing it further
+-function isClippedSquare(tile, extent, buffer) {
++module.exports = function (features, textFeatures, geometries) {
+ 
+-    var features = tile.source;
+-    if (features.length !== 1) return false;
++    var leftIndex = {},
++        rightIndex = {},
++        mergedFeatures = [],
++        mergedGeom = [],
++        mergedTexts = [],
++        mergedIndex = 0,
++        k;
+ 
+-    var feature = features[0];
+-    if (feature.type !== 3 || feature.geometry.length > 1) return false;
++    function add(k) {
++        mergedFeatures.push(features[k]);
++        mergedGeom.push(geometries[k]);
++        mergedTexts.push(textFeatures[k]);
++        mergedIndex++;
++    }
+ 
+-    var len = feature.geometry[0].length;
+-    if (len !== 5) return false;
++    function mergeFromRight(leftKey, rightKey, geom) {
++        var i = rightIndex[leftKey];
++        delete rightIndex[leftKey];
++        rightIndex[rightKey] = i;
+ 
+-    for (var i = 0; i < len; i++) {
+-        var p = transform.point(feature.geometry[0][i], extent, tile.z2, tile.x, tile.y);
+-        if ((p[0] !== -buffer && p[0] !== extent + buffer) ||
+-            (p[1] !== -buffer && p[1] !== extent + buffer)) return false;
++        mergedGeom[i][0].pop();
++        mergedGeom[i][0] = mergedGeom[i][0].concat(geom[0]);
++        return i;
+     }
+ 
+-    return true;
+-}
+-
+-},{"./clip":126,"./convert":127,"./tile":130,"./transform":131,"./wrap":132}],129:[function(require,module,exports){
+-'use strict';
++    function mergeFromLeft(leftKey, rightKey, geom) {
++        var i = leftIndex[rightKey];
++        delete leftIndex[rightKey];
++        leftIndex[leftKey] = i;
+ 
+-module.exports = simplify;
++        mergedGeom[i][0].shift();
++        mergedGeom[i][0] = geom[0].concat(mergedGeom[i][0]);
++        return i;
++    }
+ 
+-// calculate simplification data using optimized Douglas-Peucker algorithm
++    function getKey(text, geom, onRight) {
++        var point = onRight ? geom[0][geom[0].length - 1] : geom[0][0];
++        return text + ':' + point.x + ':' + point.y;
++    }
+ 
+-function simplify(points, tolerance) {
++    for (k = 0; k < features.length; k++) {
++        var geom = geometries[k],
++            text = textFeatures[k];
+ 
+-    var sqTolerance = tolerance * tolerance,
+-        len = points.length,
+-        first = 0,
+-        last = len - 1,
+-        stack = [],
+-        i, maxSqDist, sqDist, index;
++        if (!text) {
++            add(k);
++            continue;
++        }
+ 
+-    // always retain the endpoints (1 is the max value)
+-    points[first][2] = 1;
+-    points[last][2] = 1;
++        var leftKey = getKey(text, geom),
++            rightKey = getKey(text, geom, true);
+ 
+-    // avoid recursion by using a stack
+-    while (last) {
++        if ((leftKey in rightIndex) && (rightKey in leftIndex) && (rightIndex[leftKey] !== leftIndex[rightKey])) {
++            // found lines with the same text adjacent to both ends of the current line, merge all three
++            var j = mergeFromLeft(leftKey, rightKey, geom);
++            var i = mergeFromRight(leftKey, rightKey, mergedGeom[j]);
+ 
+-        maxSqDist = 0;
++            delete leftIndex[leftKey];
++            delete rightIndex[rightKey];
+ 
+-        for (i = first + 1; i < last; i++) {
+-            sqDist = getSqSegDist(points[i], points[first], points[last]);
++            rightIndex[getKey(text, mergedGeom[i], true)] = i;
++            mergedGeom[j] = null;
+ 
+-            if (sqDist > maxSqDist) {
+-                index = i;
+-                maxSqDist = sqDist;
+-            }
+-        }
++        } else if (leftKey in rightIndex) {
++            // found mergeable line adjacent to the start of the current line, merge
++            mergeFromRight(leftKey, rightKey, geom);
+ 
+-        if (maxSqDist > sqTolerance) {
+-            points[index][2] = maxSqDist; // save the point importance in squared pixels as a z coordinate
+-            stack.push(first);
+-            stack.push(index);
+-            first = index;
++        } else if (rightKey in leftIndex) {
++            // found mergeable line adjacent to the end of the current line, merge
++            mergeFromLeft(leftKey, rightKey, geom);
+ 
+         } else {
+-            last = stack.pop();
+-            first = stack.pop();
++            // no adjacent lines, add as a new item
++            add(k);
++            leftIndex[leftKey] = mergedIndex - 1;
++            rightIndex[rightKey] = mergedIndex - 1;
+         }
+     }
+-}
+-
+-// square distance from a point to a segment
+-function getSqSegDist(p, a, b) {
+-
+-    var x = a[0], y = a[1],
+-        bx = b[0], by = b[1],
+-        px = p[0], py = p[1],
+-        dx = bx - x,
+-        dy = by - y;
+ 
+-    if (dx !== 0 || dy !== 0) {
++    return {
++        features: mergedFeatures,
++        textFeatures: mergedTexts,
++        geometries: mergedGeom
++    };
++};
+ 
+-        var t = ((px - x) * dx + (py - y) * dy) / (dx * dx + dy * dy);
++},{}],133:[function(require,module,exports){
++'use strict';
+ 
+-        if (t > 1) {
+-            x = bx;
+-            y = by;
++var Point = require('point-geometry');
+ 
+-        } else if (t > 0) {
+-            x += dx * t;
+-            y += dy * t;
+-        }
+-    }
++module.exports = {
++    getIconQuads: getIconQuads,
++    getGlyphQuads: getGlyphQuads
++};
+ 
+-    dx = px - x;
+-    dy = py - y;
++var minScale = 0.5; // underscale by 1 zoom level
+ 
+-    return dx * dx + dy * dy;
++/**
++ * A textured quad for rendering a single icon or glyph.
++ *
++ * The zoom range the glyph can be shown is defined by minScale and maxScale.
++ *
++ * @param {Point} anchorPoint the point the symbol is anchored around
++ * @param {Point} tl The offset of the top left corner from the anchor.
++ * @param {Point} tr The offset of the top right corner from the anchor.
++ * @param {Point} bl The offset of the bottom left corner from the anchor.
++ * @param {Point} br The offset of the bottom right corner from the anchor.
++ * @param {Object} tex The texture coordinates.
++ * @param {number} angle The angle of the label at it's center, not the angle of this quad.
++ * @param {number} minScale The minimum scale, relative to the tile's intended scale, that the glyph can be shown at.
++ * @param {number} maxScale The maximum scale, relative to the tile's intended scale, that the glyph can be shown at.
++ *
++ * @class SymbolQuad
++ * @private
++ */
++function SymbolQuad(anchorPoint, tl, tr, bl, br, tex, angle, minScale, maxScale) {
++    this.anchorPoint = anchorPoint;
++    this.tl = tl;
++    this.tr = tr;
++    this.bl = bl;
++    this.br = br;
++    this.tex = tex;
++    this.angle = angle;
++    this.minScale = minScale;
++    this.maxScale = maxScale;
+ }
+ 
+-},{}],130:[function(require,module,exports){
+-'use strict';
++/**
++ * Create the quads used for rendering an icon.
++ *
++ * @param {Anchor} anchor
++ * @param {PositionedIcon} shapedIcon
++ * @param {number} boxScale A magic number for converting glyph metric units to geometry units.
++ * @param {Array<Array<Point>>} line
++ * @param {LayoutProperties} layout
++ * @param {boolean} alongLine Whether the icon should be placed along the line.
++ * @returns {Array<SymbolQuad>}
++ * @private
++ */
++function getIconQuads(anchor, shapedIcon, boxScale, line, layout, alongLine) {
+ 
+-module.exports = createTile;
++    var rect = shapedIcon.image.rect;
+ 
+-function createTile(features, z2, tx, ty, tolerance, noSimplify) {
+-    var tile = {
+-        features: [],
+-        numPoints: 0,
+-        numSimplified: 0,
+-        numFeatures: 0,
+-        source: null,
+-        x: tx,
+-        y: ty,
+-        z2: z2,
+-        transformed: false,
+-        min: [2, 1],
+-        max: [-1, 0]
+-    };
+-    for (var i = 0; i < features.length; i++) {
+-        tile.numFeatures++;
+-        addFeature(tile, features[i], tolerance, noSimplify);
++    var border = 1;
++    var left = shapedIcon.left - border;
++    var right = left + rect.w / shapedIcon.image.pixelRatio;
++    var top = shapedIcon.top - border;
++    var bottom = top + rect.h / shapedIcon.image.pixelRatio;
++    var tl = new Point(left, top);
++    var tr = new Point(right, top);
++    var br = new Point(right, bottom);
++    var bl = new Point(left, bottom);
+ 
+-        var min = features[i].min,
+-            max = features[i].max;
++    var angle = layout['icon-rotate'] * Math.PI / 180;
++    if (alongLine) {
++        var prev = line[anchor.segment];
++        if (anchor.y === prev.y && anchor.x === prev.x && anchor.segment + 1 < line.length) {
++            var next = line[anchor.segment + 1];
++            angle += Math.atan2(anchor.y - next.y, anchor.x - next.x) + Math.PI;
++        } else {
++            angle += Math.atan2(anchor.y - prev.y, anchor.x - prev.x);
++        }
++    }
+ 
+-        if (min[0] < tile.min[0]) tile.min[0] = min[0];
+-        if (min[1] < tile.min[1]) tile.min[1] = min[1];
+-        if (max[0] > tile.max[0]) tile.max[0] = max[0];
+-        if (max[1] > tile.max[1]) tile.max[1] = max[1];
++    if (angle) {
++        var sin = Math.sin(angle),
++            cos = Math.cos(angle),
++            matrix = [cos, -sin, sin, cos];
++
++        tl = tl.matMult(matrix);
++        tr = tr.matMult(matrix);
++        bl = bl.matMult(matrix);
++        br = br.matMult(matrix);
+     }
+-    return tile;
+-}
+ 
+-function addFeature(tile, feature, tolerance, noSimplify) {
++    return [new SymbolQuad(new Point(anchor.x, anchor.y), tl, tr, bl, br, shapedIcon.image.rect, 0, minScale, Infinity)];
++}
+ 
+-    var geom = feature.geometry,
+-        type = feature.type,
+-        simplified = [],
+-        sqTolerance = tolerance * tolerance,
+-        i, j, ring, p;
++/**
++ * Create the quads used for rendering a text label.
++ *
++ * @param {Anchor} anchor
++ * @param {Shaping} shaping
++ * @param {number} boxScale A magic number for converting from glyph metric units to geometry units.
++ * @param {Array<Array<Point>>} line
++ * @param {LayoutProperties} layout
++ * @param {boolean} alongLine Whether the label should be placed along the line.
++ * @returns {Array<SymbolQuad>}
++ * @private
++ */
++function getGlyphQuads(anchor, shaping, boxScale, line, layout, alongLine) {
+ 
+-    if (type === 1) {
+-        for (i = 0; i < geom.length; i++) {
+-            simplified.push(geom[i]);
+-            tile.numPoints++;
+-            tile.numSimplified++;
+-        }
++    var textRotate = layout['text-rotate'] * Math.PI / 180;
++    var keepUpright = layout['text-keep-upright'];
+ 
+-    } else {
++    var positionedGlyphs = shaping.positionedGlyphs;
++    var quads = [];
+ 
+-        // simplify and transform projected coordinates for tile geometry
+-        for (i = 0; i < geom.length; i++) {
+-            ring = geom[i];
++    for (var k = 0; k < positionedGlyphs.length; k++) {
++        var positionedGlyph = positionedGlyphs[k];
++        var glyph = positionedGlyph.glyph;
++        var rect = glyph.rect;
+ 
+-            // filter out tiny polylines & polygons
+-            if (!noSimplify && ((type === 2 && ring.dist < tolerance) ||
+-                                (type === 3 && ring.area < sqTolerance))) {
+-                tile.numPoints += ring.length;
+-                continue;
+-            }
++        if (!rect) continue;
+ 
+-            var simplifiedRing = [];
++        var centerX = (positionedGlyph.x + glyph.advance / 2) * boxScale;
+ 
+-            for (j = 0; j < ring.length; j++) {
+-                p = ring[j];
+-                // keep points with importance > tolerance
+-                if (noSimplify || p[2] > sqTolerance) {
+-                    simplifiedRing.push(p);
+-                    tile.numSimplified++;
+-                }
+-                tile.numPoints++;
++        var glyphInstances;
++        var labelMinScale = minScale;
++        if (alongLine) {
++            glyphInstances = [];
++            labelMinScale = getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, true);
++            if (keepUpright) {
++                labelMinScale = Math.min(labelMinScale, getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, false));
+             }
+ 
+-            simplified.push(simplifiedRing);
++        } else {
++            glyphInstances = [{
++                anchorPoint: new Point(anchor.x, anchor.y),
++                offset: 0,
++                angle: 0,
++                maxScale: Infinity,
++                minScale: minScale
++            }];
+         }
+-    }
+ 
+-    if (simplified.length) {
+-        tile.features.push({
+-            geometry: simplified,
+-            type: type,
+-            tags: feature.tags || null
+-        });
+-    }
+-}
++        var x1 = positionedGlyph.x + glyph.left,
++            y1 = positionedGlyph.y - glyph.top,
++            x2 = x1 + rect.w,
++            y2 = y1 + rect.h,
++
++            otl = new Point(x1, y1),
++            otr = new Point(x2, y1),
++            obl = new Point(x1, y2),
++            obr = new Point(x2, y2);
+ 
+-},{}],131:[function(require,module,exports){
+-'use strict';
++        for (var i = 0; i < glyphInstances.length; i++) {
+ 
+-exports.tile = transformTile;
+-exports.point = transformPoint;
++            var instance = glyphInstances[i],
++                tl = otl,
++                tr = otr,
++                bl = obl,
++                br = obr,
++                angle = instance.angle + textRotate;
+ 
+-// Transforms the coordinates of each feature in the given tile from
+-// mercator-projected space into (extent x extent) tile space.
+-function transformTile(tile, extent) {
+-    if (tile.transformed) return tile;
++            if (angle) {
++                var sin = Math.sin(angle),
++                    cos = Math.cos(angle),
++                    matrix = [cos, -sin, sin, cos];
+ 
+-    var z2 = tile.z2,
+-        tx = tile.x,
+-        ty = tile.y,
+-        i, j, k;
++                tl = tl.matMult(matrix);
++                tr = tr.matMult(matrix);
++                bl = bl.matMult(matrix);
++                br = br.matMult(matrix);
++            }
+ 
+-    for (i = 0; i < tile.features.length; i++) {
+-        var feature = tile.features[i],
+-            geom = feature.geometry,
+-            type = feature.type;
++            // Prevent label from extending past the end of the line
++            var glyphMinScale = Math.max(instance.minScale, labelMinScale);
+ 
+-        if (type === 1) {
+-            for (j = 0; j < geom.length; j++) geom[j] = transformPoint(geom[j], extent, z2, tx, ty);
++            var glyphAngle = (anchor.angle + textRotate + instance.offset + 2 * Math.PI) % (2 * Math.PI);
++            quads.push(new SymbolQuad(instance.anchorPoint, tl, tr, bl, br, rect, glyphAngle, glyphMinScale, instance.maxScale));
+ 
+-        } else {
+-            for (j = 0; j < geom.length; j++) {
+-                var ring = geom[j];
+-                for (k = 0; k < ring.length; k++) ring[k] = transformPoint(ring[k], extent, z2, tx, ty);
+-            }
+         }
+     }
+ 
+-    tile.transformed = true;
+-
+-    return tile;
++    return quads;
+ }
+ 
+-function transformPoint(p, extent, z2, tx, ty) {
+-    var x = Math.round(extent * (p[0] * z2 - tx)),
+-        y = Math.round(extent * (p[1] * z2 - ty));
+-    return [x, y];
+-}
++/**
++ * We can only render glyph quads that slide along a straight line. To draw
++ * curved lines we need an instance of a glyph for each segment it appears on.
++ * This creates all the instances of a glyph that are necessary to render a label.
++ *
++ * We need a
++ * @param {Array<Object>} glyphInstances An empty array that glyphInstances are added to.
++ * @param {Anchor} anchor
++ * @param {number} offset The glyph's offset from the center of the label.
++ * @param {Array<Point>} line
++ * @param {number} segment The index of the segment of the line on which the anchor exists.
++ * @param {boolean} forward If true get the glyphs that come later on the line, otherwise get the glyphs that come earlier.
++ *
++ * @returns {Array<Object>} glyphInstances
++ * @private
++ */
++function getSegmentGlyphs(glyphs, anchor, offset, line, segment, forward) {
++    var upsideDown = !forward;
+ 
+-},{}],132:[function(require,module,exports){
+-'use strict';
++    if (offset < 0) forward = !forward;
+ 
+-var clip = require('./clip');
++    if (forward) segment++;
+ 
+-module.exports = wrap;
++    var newAnchorPoint = new Point(anchor.x, anchor.y);
++    var end = line[segment];
++    var prevScale = Infinity;
+ 
+-function wrap(features, buffer, intersectX) {
+-    var merged = features,
+-        left  = clip(features, 1, -1 - buffer, buffer,     0, intersectX, -1, 2), // left world copy
+-        right = clip(features, 1,  1 - buffer, 2 + buffer, 0, intersectX, -1, 2); // right world copy
++    offset = Math.abs(offset);
+ 
+-    if (left || right) {
+-        merged = clip(features, 1, -buffer, 1 + buffer, 0, intersectX, -1, 2); // center world copy
++    var placementScale = minScale;
+ 
+-        if (left) merged = shiftFeatureCoords(left, 1).concat(merged); // merge left into center
+-        if (right) merged = merged.concat(shiftFeatureCoords(right, -1)); // merge right into center
+-    }
++    while (true) {
++        var distance = newAnchorPoint.dist(end);
++        var scale = offset / distance;
+ 
+-    return merged;
+-}
++        // Get the angle of the line segment
++        var angle = Math.atan2(end.y - newAnchorPoint.y, end.x - newAnchorPoint.x);
++        if (!forward) angle += Math.PI;
++        if (upsideDown) angle += Math.PI;
+ 
+-function shiftFeatureCoords(features, offset) {
+-    var newFeatures = [];
++        glyphs.push({
++            anchorPoint: newAnchorPoint,
++            offset: upsideDown ? Math.PI : 0,
++            minScale: scale,
++            maxScale: prevScale,
++            angle: (angle + 2 * Math.PI) % (2 * Math.PI)
++        });
+ 
+-    for (var i = 0; i < features.length; i++) {
+-        var feature = features[i],
+-            type = feature.type;
++        if (scale <= placementScale) break;
+ 
+-        var newGeometry;
++        newAnchorPoint = end;
+ 
+-        if (type === 1) {
+-            newGeometry = shiftCoords(feature.geometry, offset);
+-        } else {
+-            newGeometry = [];
+-            for (var j = 0; j < feature.geometry.length; j++) {
+-                newGeometry.push(shiftCoords(feature.geometry[j], offset));
++        // skip duplicate nodes
++        while (newAnchorPoint.equals(end)) {
++            segment += forward ? 1 : -1;
++            end = line[segment];
++            if (!end) {
++                return scale;
+             }
+         }
+ 
+-        newFeatures.push({
+-            geometry: newGeometry,
+-            type: type,
+-            tags: feature.tags,
+-            min: [feature.min[0] + offset, feature.min[1]],
+-            max: [feature.max[0] + offset, feature.max[1]]
+-        });
++        var unit = end.sub(newAnchorPoint)._unit();
++        newAnchorPoint = newAnchorPoint.sub(unit._mult(distance));
++
++        prevScale = scale;
+     }
+ 
+-    return newFeatures;
++    return placementScale;
+ }
+ 
+-function shiftCoords(points, offset) {
+-    var newPoints = [];
+-    newPoints.area = points.area;
+-    newPoints.dist = points.dist;
++},{"point-geometry":174}],134:[function(require,module,exports){
++'use strict';
+ 
+-    for (var i = 0; i < points.length; i++) {
+-        newPoints.push([points[i][0] + offset, points[i][1], points[i][2]]);
+-    }
+-    return newPoints;
+-}
++var resolveTokens = require('../util/token');
++
++module.exports = resolveText;
+ 
+-},{"./clip":126}],133:[function(require,module,exports){
+ /**
+- * @fileoverview gl-matrix - High performance matrix and vector operations
+- * @author Brandon Jones
+- * @author Colin MacKenzie IV
+- * @version 2.3.2
++ * For an array of features determine what glyphs need to be loaded
++ * and apply any text preprocessing. The remaining users of text should
++ * use the `textFeatures` key returned by this function rather than accessing
++ * feature text directly.
++ * @private
+  */
++function resolveText(features, layoutProperties, codepoints) {
++    var textFeatures = [];
+ 
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+-
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
+-
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
+-
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
+-// END HEADER
++    for (var i = 0, fl = features.length; i < fl; i++) {
++        var text = resolveTokens(features[i].properties, layoutProperties['text-field']);
++        if (!text) {
++            textFeatures[i] = null;
++            continue;
++        }
++        text = text.toString();
+ 
+-exports.glMatrix = require("./gl-matrix/common.js");
+-exports.mat2 = require("./gl-matrix/mat2.js");
+-exports.mat2d = require("./gl-matrix/mat2d.js");
+-exports.mat3 = require("./gl-matrix/mat3.js");
+-exports.mat4 = require("./gl-matrix/mat4.js");
+-exports.quat = require("./gl-matrix/quat.js");
+-exports.vec2 = require("./gl-matrix/vec2.js");
+-exports.vec3 = require("./gl-matrix/vec3.js");
+-exports.vec4 = require("./gl-matrix/vec4.js");
+-},{"./gl-matrix/common.js":134,"./gl-matrix/mat2.js":135,"./gl-matrix/mat2d.js":136,"./gl-matrix/mat3.js":137,"./gl-matrix/mat4.js":138,"./gl-matrix/quat.js":139,"./gl-matrix/vec2.js":140,"./gl-matrix/vec3.js":141,"./gl-matrix/vec4.js":142}],134:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++        var transform = layoutProperties['text-transform'];
++        if (transform === 'uppercase') {
++            text = text.toLocaleUpperCase();
++        } else if (transform === 'lowercase') {
++            text = text.toLocaleLowerCase();
++        }
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++        for (var j = 0; j < text.length; j++) {
++            codepoints[text.charCodeAt(j)] = true;
++        }
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++        // Track indexes of features with text.
++        textFeatures[i] = text;
++    }
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    return textFeatures;
++}
+ 
+-/**
+- * @class Common utilities
+- * @name glMatrix
+- */
+-var glMatrix = {};
++},{"../util/token":168}],135:[function(require,module,exports){
++'use strict';
+ 
+-// Configuration Constants
+-glMatrix.EPSILON = 0.000001;
+-glMatrix.ARRAY_TYPE = (typeof Float32Array !== 'undefined') ? Float32Array : Array;
+-glMatrix.RANDOM = Math.random;
+-glMatrix.ENABLE_SIMD = false;
++module.exports = {
++    shapeText: shapeText,
++    shapeIcon: shapeIcon
++};
+ 
+-// Capability detection
+-glMatrix.SIMD_AVAILABLE = (glMatrix.ARRAY_TYPE === Float32Array) && ('SIMD' in this);
+-glMatrix.USE_SIMD = glMatrix.ENABLE_SIMD && glMatrix.SIMD_AVAILABLE;
+ 
+-/**
+- * Sets the type of array used when creating new vectors and matrices
+- *
+- * @param {Type} type Array type, such as Float32Array or Array
+- */
+-glMatrix.setMatrixArrayType = function(type) {
+-    glMatrix.ARRAY_TYPE = type;
++// The position of a glyph relative to the text's anchor point.
++function PositionedGlyph(codePoint, x, y, glyph) {
++    this.codePoint = codePoint;
++    this.x = x;
++    this.y = y;
++    this.glyph = glyph;
+ }
+ 
+-var degree = Math.PI / 180;
+-
+-/**
+-* Convert Degree To Radian
+-*
+-* @param {Number} Angle in Degrees
+-*/
+-glMatrix.toRadian = function(a){
+-     return a * degree;
++// A collection of positioned glyphs and some metadata
++function Shaping(positionedGlyphs, text, top, bottom, left, right) {
++    this.positionedGlyphs = positionedGlyphs;
++    this.text = text;
++    this.top = top;
++    this.bottom = bottom;
++    this.left = left;
++    this.right = right;
+ }
+ 
+-/**
+- * Tests whether or not the arguments have approximately the same value, within an absolute
+- * or relative tolerance of glMatrix.EPSILON (an absolute tolerance is used for values less 
+- * than or equal to 1.0, and a relative tolerance is used for larger values)
+- * 
+- * @param {Number} a The first number to test.
+- * @param {Number} b The second number to test.
+- * @returns {Boolean} True if the numbers are approximately equal, false otherwise.
+- */
+-glMatrix.equals = function(a, b) {
+-	return Math.abs(a - b) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a), Math.abs(b));
+-}
++function shapeText(text, glyphs, maxWidth, lineHeight, horizontalAlign, verticalAlign, justify, spacing, translate) {
+ 
+-module.exports = glMatrix;
++    var positionedGlyphs = [];
++    var shaping = new Shaping(positionedGlyphs, text, translate[1], translate[1], translate[0], translate[0]);
+ 
+-},{}],135:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++    // the y offset *should* be part of the font metadata
++    var yOffset = -17;
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    var x = 0;
++    var y = yOffset;
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    for (var i = 0; i < text.length; i++) {
++        var codePoint = text.charCodeAt(i);
++        var glyph = glyphs[codePoint];
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++        if (!glyph) continue;
+ 
+-var glMatrix = require("./common.js");
++        positionedGlyphs.push(new PositionedGlyph(codePoint, x, y, glyph));
++        x += glyph.advance + spacing;
++    }
+ 
+-/**
+- * @class 2x2 Matrix
+- * @name mat2
+- */
+-var mat2 = {};
++    if (!positionedGlyphs.length) return false;
+ 
+-/**
+- * Creates a new identity mat2
+- *
+- * @returns {mat2} a new 2x2 matrix
+- */
+-mat2.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
+-};
++    linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate);
+ 
+-/**
+- * Creates a new mat2 initialized with values from an existing matrix
+- *
+- * @param {mat2} a matrix to clone
+- * @returns {mat2} a new 2x2 matrix
+- */
+-mat2.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
+-};
++    return shaping;
++}
+ 
+-/**
+- * Copy the values from one mat2 to another
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
++var invisible = {
++    0x20:   true, // space
++    0x200b: true  // zero-width space
+ };
+ 
+-/**
+- * Set a mat2 to the identity matrix
+- *
+- * @param {mat2} out the receiving matrix
+- * @returns {mat2} out
+- */
+-mat2.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
++var breakable = {
++    0x20:   true, // space
++    0x26:   true, // ampersand
++    0x2b:   true, // plus sign
++    0x2d:   true, // hyphen-minus
++    0x2f:   true, // solidus
++    0xad:   true, // soft hyphen
++    0xb7:   true, // middle dot
++    0x200b: true, // zero-width space
++    0x2010: true, // hyphen
++    0x2013: true  // en dash
+ };
+ 
+-/**
+- * Create a new mat2 with the given values
+- *
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m10 Component in column 1, row 0 position (index 2)
+- * @param {Number} m11 Component in column 1, row 1 position (index 3)
+- * @returns {mat2} out A new 2x2 matrix
+- */
+-mat2.fromValues = function(m00, m01, m10, m11) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m10;
+-    out[3] = m11;
+-    return out;
+-};
++function linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate) {
++    var lastSafeBreak = null;
+ 
+-/**
+- * Set the components of a mat2 to the given values
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m10 Component in column 1, row 0 position (index 2)
+- * @param {Number} m11 Component in column 1, row 1 position (index 3)
+- * @returns {mat2} out
+- */
+-mat2.set = function(out, m00, m01, m10, m11) {
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m10;
+-    out[3] = m11;
+-    return out;
+-};
++    var lengthBeforeCurrentLine = 0;
++    var lineStartIndex = 0;
++    var line = 0;
+ 
++    var maxLineLength = 0;
+ 
+-/**
+- * Transpose the values of a mat2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.transpose = function(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a1 = a[1];
+-        out[1] = a[2];
+-        out[2] = a1;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[2];
+-        out[2] = a[1];
+-        out[3] = a[3];
+-    }
+-    
+-    return out;
+-};
++    var positionedGlyphs = shaping.positionedGlyphs;
+ 
+-/**
+- * Inverts a mat2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.invert = function(out, a) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++    if (maxWidth) {
++        for (var i = 0; i < positionedGlyphs.length; i++) {
++            var positionedGlyph = positionedGlyphs[i];
+ 
+-        // Calculate the determinant
+-        det = a0 * a3 - a2 * a1;
++            positionedGlyph.x -= lengthBeforeCurrentLine;
++            positionedGlyph.y += lineHeight * line;
+ 
+-    if (!det) {
+-        return null;
+-    }
+-    det = 1.0 / det;
+-    
+-    out[0] =  a3 * det;
+-    out[1] = -a1 * det;
+-    out[2] = -a2 * det;
+-    out[3] =  a0 * det;
++            if (positionedGlyph.x > maxWidth && lastSafeBreak !== null) {
+ 
+-    return out;
+-};
++                var lineLength = positionedGlyphs[lastSafeBreak + 1].x;
++                maxLineLength = Math.max(lineLength, maxLineLength);
+ 
+-/**
+- * Calculates the adjugate of a mat2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.adjoint = function(out, a) {
+-    // Caching this value is nessecary if out == a
+-    var a0 = a[0];
+-    out[0] =  a[3];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    out[3] =  a0;
++                for (var k = lastSafeBreak + 1; k <= i; k++) {
++                    positionedGlyphs[k].y += lineHeight;
++                    positionedGlyphs[k].x -= lineLength;
++                }
+ 
+-    return out;
+-};
++                if (justify) {
++                    // Collapse invisible characters.
++                    var lineEnd = lastSafeBreak;
++                    if (invisible[positionedGlyphs[lastSafeBreak].codePoint]) {
++                        lineEnd--;
++                    }
+ 
+-/**
+- * Calculates the determinant of a mat2
+- *
+- * @param {mat2} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-mat2.determinant = function (a) {
+-    return a[0] * a[3] - a[2] * a[1];
+-};
++                    justifyLine(positionedGlyphs, glyphs, lineStartIndex, lineEnd, justify);
++                }
+ 
+-/**
+- * Multiplies two mat2's
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @returns {mat2} out
+- */
+-mat2.multiply = function (out, a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    out[0] = a0 * b0 + a2 * b1;
+-    out[1] = a1 * b0 + a3 * b1;
+-    out[2] = a0 * b2 + a2 * b3;
+-    out[3] = a1 * b2 + a3 * b3;
+-    return out;
+-};
++                lineStartIndex = lastSafeBreak + 1;
++                lastSafeBreak = null;
++                lengthBeforeCurrentLine += lineLength;
++                line++;
++            }
+ 
+-/**
+- * Alias for {@link mat2.multiply}
+- * @function
+- */
+-mat2.mul = mat2.multiply;
++            if (breakable[positionedGlyph.codePoint]) {
++                lastSafeBreak = i;
++            }
++        }
++    }
+ 
+-/**
+- * Rotates a mat2 by the given angle
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2} out
+- */
+-mat2.rotate = function (out, a, rad) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+-        s = Math.sin(rad),
+-        c = Math.cos(rad);
+-    out[0] = a0 *  c + a2 * s;
+-    out[1] = a1 *  c + a3 * s;
+-    out[2] = a0 * -s + a2 * c;
+-    out[3] = a1 * -s + a3 * c;
+-    return out;
+-};
++    var lastPositionedGlyph = positionedGlyphs[positionedGlyphs.length - 1];
++    var lastLineLength = lastPositionedGlyph.x + glyphs[lastPositionedGlyph.codePoint].advance;
++    maxLineLength = Math.max(maxLineLength, lastLineLength);
+ 
+-/**
+- * Scales the mat2 by the dimensions in the given vec2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the matrix to rotate
+- * @param {vec2} v the vec2 to scale the matrix by
+- * @returns {mat2} out
+- **/
+-mat2.scale = function(out, a, v) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+-        v0 = v[0], v1 = v[1];
+-    out[0] = a0 * v0;
+-    out[1] = a1 * v0;
+-    out[2] = a2 * v1;
+-    out[3] = a3 * v1;
+-    return out;
+-};
++    var height = (line + 1) * lineHeight;
+ 
+-/**
+- * Creates a matrix from a given angle
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2.identity(dest);
+- *     mat2.rotate(dest, dest, rad);
+- *
+- * @param {mat2} out mat2 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2} out
+- */
+-mat2.fromRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
+-    out[0] = c;
+-    out[1] = s;
+-    out[2] = -s;
+-    out[3] = c;
+-    return out;
++    justifyLine(positionedGlyphs, glyphs, lineStartIndex, positionedGlyphs.length - 1, justify);
++    align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate);
++
++    // Calculate the bounding box
++    shaping.top += -verticalAlign * height;
++    shaping.bottom = shaping.top + height;
++    shaping.left += -horizontalAlign * maxLineLength;
++    shaping.right = shaping.left + maxLineLength;
+ }
+ 
+-/**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2.identity(dest);
+- *     mat2.scale(dest, dest, vec);
+- *
+- * @param {mat2} out mat2 receiving operation result
+- * @param {vec2} v Scaling vector
+- * @returns {mat2} out
+- */
+-mat2.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = v[1];
+-    return out;
++function justifyLine(positionedGlyphs, glyphs, start, end, justify) {
++    var lastAdvance = glyphs[positionedGlyphs[end].codePoint].advance;
++    var lineIndent = (positionedGlyphs[end].x + lastAdvance) * justify;
++
++    for (var j = start; j <= end; j++) {
++        positionedGlyphs[j].x -= lineIndent;
++    }
++
+ }
+ 
+-/**
+- * Returns a string representation of a mat2
+- *
+- * @param {mat2} mat matrix to represent as a string
+- * @returns {String} string representation of the matrix
+- */
+-mat2.str = function (a) {
+-    return 'mat2(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+-};
++function align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate) {
++    var shiftX = (justify - horizontalAlign) * maxLineLength + translate[0];
++    var shiftY = (-verticalAlign * (line + 1) + 0.5) * lineHeight + translate[1];
+ 
+-/**
+- * Returns Frobenius norm of a mat2
+- *
+- * @param {mat2} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
+- */
+-mat2.frob = function (a) {
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2)))
+-};
++    for (var j = 0; j < positionedGlyphs.length; j++) {
++        positionedGlyphs[j].x += shiftX;
++        positionedGlyphs[j].y += shiftY;
++    }
++}
+ 
+-/**
+- * Returns L, D and U matrices (Lower triangular, Diagonal and Upper triangular) by factorizing the input matrix
+- * @param {mat2} L the lower triangular matrix 
+- * @param {mat2} D the diagonal matrix 
+- * @param {mat2} U the upper triangular matrix 
+- * @param {mat2} a the input matrix to factorize
+- */
+ 
+-mat2.LDU = function (L, D, U, a) { 
+-    L[2] = a[2]/a[0]; 
+-    U[0] = a[0]; 
+-    U[1] = a[1]; 
+-    U[3] = a[3] - L[2] * U[1]; 
+-    return [L, D, U];       
+-}; 
++function shapeIcon(image, layout) {
++    if (!image || !image.rect) return null;
+ 
+-/**
+- * Adds two mat2's
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @returns {mat2} out
+- */
+-mat2.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    return out;
+-};
++    var dx = layout['icon-offset'][0];
++    var dy = layout['icon-offset'][1];
++    var x1 = dx - image.width / 2;
++    var x2 = x1 + image.width;
++    var y1 = dy - image.height / 2;
++    var y2 = y1 + image.height;
+ 
+-/**
+- * Subtracts matrix b from matrix a
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @returns {mat2} out
+- */
+-mat2.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    return out;
+-};
++    return new PositionedIcon(image, y1, y2, x1, x2);
++}
+ 
+-/**
+- * Alias for {@link mat2.subtract}
+- * @function
+- */
+-mat2.sub = mat2.subtract;
++function PositionedIcon(image, top, bottom, left, right) {
++    this.image = image;
++    this.top = top;
++    this.bottom = bottom;
++    this.left = left;
++    this.right = right;
++}
+ 
+-/**
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {mat2} a The first matrix.
+- * @param {mat2} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat2.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
+-};
++},{}],136:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
+- *
+- * @param {mat2} a The first matrix.
+- * @param {mat2} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat2.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
+-};
++var ShelfPack = require('shelf-pack');
++var browser = require('../util/browser');
+ 
+-/**
+- * Multiply each element of the matrix by a scalar.
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat2} out
+- */
+-mat2.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    return out;
+-};
++module.exports = SpriteAtlas;
++function SpriteAtlas(width, height) {
++    this.width = width;
++    this.height = height;
+ 
+-/**
+- * Adds two mat2's after multiplying each element of the second operand by a scalar value.
+- *
+- * @param {mat2} out the receiving vector
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat2} out
+- */
+-mat2.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    return out;
+-};
++    this.bin = new ShelfPack(width, height);
++    this.images = {};
++    this.data = false;
++    this.texture = 0; // WebGL ID
++    this.filter = 0; // WebGL ID
++    this.pixelRatio = 1;
++    this.dirty = true;
++}
+ 
+-module.exports = mat2;
++function copyBitmap(src, srcStride, srcX, srcY, dst, dstStride, dstX, dstY, width, height, wrap) {
++    var srcI = srcY * srcStride + srcX;
++    var dstI = dstY * dstStride + dstX;
++    var x, y;
+ 
+-},{"./common.js":134}],136:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++    if (wrap) {
++        // add 1 pixel wrapped padding on each side of the image
++        dstI -= dstStride;
++        for (y = -1; y <= height; y++, srcI = ((y + height) % height + srcY) * srcStride + srcX, dstI += dstStride) {
++            for (x = -1; x <= width; x++) {
++                dst[dstI + x] = src[srcI + ((x + width) % width)];
++            }
++        }
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    } else {
++        for (y = 0; y < height; y++, srcI += srcStride, dstI += dstStride) {
++            for (x = 0; x < width; x++) {
++                dst[dstI + x] = src[srcI + x];
++            }
++        }
++    }
++}
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++SpriteAtlas.prototype.allocateImage = function(pixelWidth, pixelHeight) {
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    pixelWidth = pixelWidth / this.pixelRatio;
++    pixelHeight = pixelHeight / this.pixelRatio;
+ 
+-var glMatrix = require("./common.js");
++    // Increase to next number divisible by 4, but at least 1.
++    // This is so we can scale down the texture coordinates and pack them
++    // into 2 bytes rather than 4 bytes.
++    // Pad icons to prevent them from polluting neighbours during linear interpolation
++    var padding = 2;
++    var packWidth = pixelWidth + padding + (4 - (pixelWidth + padding) % 4);
++    var packHeight = pixelHeight + padding + (4 - (pixelHeight + padding) % 4);// + 4;
+ 
+-/**
+- * @class 2x3 Matrix
+- * @name mat2d
+- * 
+- * @description 
+- * A mat2d contains six elements defined as:
+- * <pre>
+- * [a, c, tx,
+- *  b, d, ty]
+- * </pre>
+- * This is a short form for the 3x3 matrix:
+- * <pre>
+- * [a, c, tx,
+- *  b, d, ty,
+- *  0, 0, 1]
+- * </pre>
+- * The last row is ignored so the array is shorter and operations are faster.
+- */
+-var mat2d = {};
++    var rect = this.bin.packOne(packWidth, packHeight);
++    if (!rect) {
++        console.warn('SpriteAtlas out of space.');
++        return null;
++    }
+ 
+-/**
+- * Creates a new identity mat2d
+- *
+- * @returns {mat2d} a new 2x3 matrix
+- */
+-mat2d.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(6);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
++    return rect;
+ };
+ 
+-/**
+- * Creates a new mat2d initialized with values from an existing matrix
+- *
+- * @param {mat2d} a matrix to clone
+- * @returns {mat2d} a new 2x3 matrix
+- */
+-mat2d.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(6);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    return out;
+-};
++SpriteAtlas.prototype.getImage = function(name, wrap) {
++    if (this.images[name]) {
++        return this.images[name];
++    }
+ 
+-/**
+- * Copy the values from one mat2d to another
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the source matrix
+- * @returns {mat2d} out
+- */
+-mat2d.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    return out;
+-};
++    if (!this.sprite) {
++        return null;
++    }
+ 
+-/**
+- * Set a mat2d to the identity matrix
+- *
+- * @param {mat2d} out the receiving matrix
+- * @returns {mat2d} out
+- */
+-mat2d.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
+-};
++    var pos = this.sprite.getSpritePosition(name);
++    if (!pos.width || !pos.height) {
++        return null;
++    }
+ 
+-/**
+- * Create a new mat2d with the given values
+- *
+- * @param {Number} a Component A (index 0)
+- * @param {Number} b Component B (index 1)
+- * @param {Number} c Component C (index 2)
+- * @param {Number} d Component D (index 3)
+- * @param {Number} tx Component TX (index 4)
+- * @param {Number} ty Component TY (index 5)
+- * @returns {mat2d} A new mat2d
+- */
+-mat2d.fromValues = function(a, b, c, d, tx, ty) {
+-    var out = new glMatrix.ARRAY_TYPE(6);
+-    out[0] = a;
+-    out[1] = b;
+-    out[2] = c;
+-    out[3] = d;
+-    out[4] = tx;
+-    out[5] = ty;
+-    return out;
+-};
++    var rect = this.allocateImage(pos.width, pos.height);
++    if (!rect) {
++        return null;
++    }
+ 
+-/**
+- * Set the components of a mat2d to the given values
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {Number} a Component A (index 0)
+- * @param {Number} b Component B (index 1)
+- * @param {Number} c Component C (index 2)
+- * @param {Number} d Component D (index 3)
+- * @param {Number} tx Component TX (index 4)
+- * @param {Number} ty Component TY (index 5)
+- * @returns {mat2d} out
+- */
+-mat2d.set = function(out, a, b, c, d, tx, ty) {
+-    out[0] = a;
+-    out[1] = b;
+-    out[2] = c;
+-    out[3] = d;
+-    out[4] = tx;
+-    out[5] = ty;
+-    return out;
+-};
++    var image = new AtlasImage(rect, pos.width / pos.pixelRatio, pos.height / pos.pixelRatio, pos.sdf, pos.pixelRatio / this.pixelRatio);
++    this.images[name] = image;
+ 
+-/**
+- * Inverts a mat2d
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the source matrix
+- * @returns {mat2d} out
+- */
+-mat2d.invert = function(out, a) {
+-    var aa = a[0], ab = a[1], ac = a[2], ad = a[3],
+-        atx = a[4], aty = a[5];
++    this.copy(rect, pos, wrap);
++
++    return image;
++};
+ 
+-    var det = aa * ad - ab * ac;
+-    if(!det){
++
++// Return position of a repeating fill pattern.
++SpriteAtlas.prototype.getPosition = function(name, repeating) {
++    var image = this.getImage(name, repeating);
++    var rect = image && image.rect;
++
++    if (!rect) {
+         return null;
+     }
+-    det = 1.0 / det;
+ 
+-    out[0] = ad * det;
+-    out[1] = -ab * det;
+-    out[2] = -ac * det;
+-    out[3] = aa * det;
+-    out[4] = (ac * aty - ad * atx) * det;
+-    out[5] = (ab * atx - aa * aty) * det;
+-    return out;
++    var width = image.width * image.pixelRatio;
++    var height = image.height * image.pixelRatio;
++    var padding = 1;
++
++    return {
++        size: [image.width, image.height],
++        tl: [(rect.x + padding)         / this.width, (rect.y + padding)          / this.height],
++        br: [(rect.x + padding + width) / this.width, (rect.y + padding + height) / this.height]
++    };
+ };
+ 
+-/**
+- * Calculates the determinant of a mat2d
+- *
+- * @param {mat2d} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-mat2d.determinant = function (a) {
+-    return a[0] * a[3] - a[1] * a[2];
++
++SpriteAtlas.prototype.allocate = function() {
++    if (!this.data) {
++        var w = Math.floor(this.width * this.pixelRatio);
++        var h = Math.floor(this.height * this.pixelRatio);
++        this.data = new Uint32Array(w * h);
++        for (var i = 0; i < this.data.length; i++) {
++            this.data[i] = 0;
++        }
++    }
+ };
+ 
+-/**
+- * Multiplies two mat2d's
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @returns {mat2d} out
+- */
+-mat2d.multiply = function (out, a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
+-    out[0] = a0 * b0 + a2 * b1;
+-    out[1] = a1 * b0 + a3 * b1;
+-    out[2] = a0 * b2 + a2 * b3;
+-    out[3] = a1 * b2 + a3 * b3;
+-    out[4] = a0 * b4 + a2 * b5 + a4;
+-    out[5] = a1 * b4 + a3 * b5 + a5;
+-    return out;
++
++SpriteAtlas.prototype.copy = function(dst, src, wrap) {
++    if (!this.sprite.img.data) return;
++    var srcImg = new Uint32Array(this.sprite.img.data.buffer);
++
++    this.allocate();
++    var dstImg = this.data;
++
++    var padding = 1;
++
++    copyBitmap(
++        /* source buffer */  srcImg,
++        /* source stride */  this.sprite.img.width,
++        /* source x */       src.x,
++        /* source y */       src.y,
++        /* dest buffer */    dstImg,
++        /* dest stride */    this.width * this.pixelRatio,
++        /* dest x */         (dst.x + padding) * this.pixelRatio,
++        /* dest y */         (dst.y + padding) * this.pixelRatio,
++        /* icon dimension */ src.width,
++        /* icon dimension */ src.height,
++        /* wrap */ wrap
++    );
++
++    this.dirty = true;
+ };
+ 
+-/**
+- * Alias for {@link mat2d.multiply}
+- * @function
+- */
+-mat2d.mul = mat2d.multiply;
++SpriteAtlas.prototype.setSprite = function(sprite) {
++    if (sprite) {
++        this.pixelRatio = browser.devicePixelRatio > 1 ? 2 : 1;
+ 
+-/**
+- * Rotates a mat2d by the given angle
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2d} out
+- */
+-mat2d.rotate = function (out, a, rad) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        s = Math.sin(rad),
+-        c = Math.cos(rad);
+-    out[0] = a0 *  c + a2 * s;
+-    out[1] = a1 *  c + a3 * s;
+-    out[2] = a0 * -s + a2 * c;
+-    out[3] = a1 * -s + a3 * c;
+-    out[4] = a4;
+-    out[5] = a5;
+-    return out;
++        if (this.canvas) {
++            this.canvas.width = this.width * this.pixelRatio;
++            this.canvas.height = this.height * this.pixelRatio;
++        }
++    }
++    this.sprite = sprite;
+ };
+ 
+-/**
+- * Scales the mat2d by the dimensions in the given vec2
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to translate
+- * @param {vec2} v the vec2 to scale the matrix by
+- * @returns {mat2d} out
+- **/
+-mat2d.scale = function(out, a, v) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        v0 = v[0], v1 = v[1];
+-    out[0] = a0 * v0;
+-    out[1] = a1 * v0;
+-    out[2] = a2 * v1;
+-    out[3] = a3 * v1;
+-    out[4] = a4;
+-    out[5] = a5;
+-    return out;
++SpriteAtlas.prototype.addIcons = function(icons, callback) {
++    for (var i = 0; i < icons.length; i++) {
++        this.getImage(icons[i]);
++    }
++
++    callback(null, this.images);
+ };
+ 
+-/**
+- * Translates the mat2d by the dimensions in the given vec2
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to translate
+- * @param {vec2} v the vec2 to translate the matrix by
+- * @returns {mat2d} out
+- **/
+-mat2d.translate = function(out, a, v) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        v0 = v[0], v1 = v[1];
+-    out[0] = a0;
+-    out[1] = a1;
+-    out[2] = a2;
+-    out[3] = a3;
+-    out[4] = a0 * v0 + a2 * v1 + a4;
+-    out[5] = a1 * v0 + a3 * v1 + a5;
+-    return out;
++SpriteAtlas.prototype.bind = function(gl, linear) {
++    var first = false;
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++        first = true;
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++    }
++
++    var filterVal = linear ? gl.LINEAR : gl.NEAREST;
++    if (filterVal !== this.filter) {
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, filterVal);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, filterVal);
++        this.filter = filterVal;
++    }
++
++    if (this.dirty) {
++        this.allocate();
++
++        if (first) {
++            gl.texImage2D(
++                gl.TEXTURE_2D, // enum target
++                0, // ind level
++                gl.RGBA, // ind internalformat
++                this.width * this.pixelRatio, // GLsizei width
++                this.height * this.pixelRatio, // GLsizei height
++                0, // ind border
++                gl.RGBA, // enum format
++                gl.UNSIGNED_BYTE, // enum type
++                new Uint8Array(this.data.buffer) // Object data
++            );
++        } else {
++            gl.texSubImage2D(
++                gl.TEXTURE_2D, // enum target
++                0, // int level
++                0, // int xoffset
++                0, // int yoffset
++                this.width * this.pixelRatio, // long width
++                this.height * this.pixelRatio, // long height
++                gl.RGBA, // enum format
++                gl.UNSIGNED_BYTE, // enum type
++                new Uint8Array(this.data.buffer) // Object pixels
++            );
++        }
++
++        this.dirty = false;
++    }
+ };
+ 
+-/**
+- * Creates a matrix from a given angle
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2d.identity(dest);
+- *     mat2d.rotate(dest, dest, rad);
+- *
+- * @param {mat2d} out mat2d receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2d} out
+- */
+-mat2d.fromRotation = function(out, rad) {
+-    var s = Math.sin(rad), c = Math.cos(rad);
+-    out[0] = c;
+-    out[1] = s;
+-    out[2] = -s;
+-    out[3] = c;
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
++function AtlasImage(rect, width, height, sdf, pixelRatio) {
++    this.rect = rect;
++    this.width = width;
++    this.height = height;
++    this.sdf = sdf;
++    this.pixelRatio = pixelRatio;
+ }
+ 
+-/**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2d.identity(dest);
+- *     mat2d.scale(dest, dest, vec);
+- *
+- * @param {mat2d} out mat2d receiving operation result
+- * @param {vec2} v Scaling vector
+- * @returns {mat2d} out
+- */
+-mat2d.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = v[1];
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
+-}
++},{"../util/browser":155,"shelf-pack":177}],137:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Creates a matrix from a vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2d.identity(dest);
+- *     mat2d.translate(dest, dest, vec);
+- *
+- * @param {mat2d} out mat2d receiving operation result
+- * @param {vec2} v Translation vector
+- * @returns {mat2d} out
+- */
+-mat2d.fromTranslation = function(out, v) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    out[4] = v[0];
+-    out[5] = v[1];
+-    return out;
+-}
++var util = require('../util/util');
++var interpolate = require('../util/interpolate');
++var browser = require('../util/browser');
++var LngLat = require('../geo/lng_lat');
++var LngLatBounds = require('../geo/lng_lat_bounds');
++var Point = require('point-geometry');
+ 
+ /**
+- * Returns a string representation of a mat2d
++ * Options common to Map#jumpTo, Map#easeTo, and Map#flyTo, controlling the destination
++ * location, zoom level, bearing and pitch. All properties are options; unspecified
++ * options will default to the current value for that property.
+  *
+- * @param {mat2d} a matrix to represent as a string
+- * @returns {String} string representation of the matrix
++ * @typedef {Object} CameraOptions
++ * @property {LngLat} center Map center
++ * @property {number} zoom Map zoom level
++ * @property {number} bearing Map rotation bearing in degrees counter-clockwise from north
++ * @property {number} pitch Map angle in degrees at which the camera is looking at the ground
++ * @property {LngLat} around If zooming, the zoom center (defaults to map center)
+  */
+-mat2d.str = function (a) {
+-    return 'mat2d(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
+-                    a[3] + ', ' + a[4] + ', ' + a[5] + ')';
+-};
+ 
+ /**
+- * Returns Frobenius norm of a mat2d
++ * Options common to map movement methods that involve animation, such as Map#panBy and
++ * Map#easeTo, controlling the duration of the animation and easing function. All properties
++ * are optional.
+  *
+- * @param {mat2d} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
++ * @typedef {Object} AnimationOptions
++ * @property {number} duration Number in milliseconds
++ * @property {Function} easing
++ * @property {Array} offset point, origin of movement relative to map center
++ * @property {boolean} animate When set to false, no animation happens
+  */
+-mat2d.frob = function (a) { 
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + 1))
+-}; 
+ 
+-/**
+- * Adds two mat2d's
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @returns {mat2d} out
+- */
+-mat2d.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    out[4] = a[4] + b[4];
+-    out[5] = a[5] + b[5];
+-    return out;
+-};
++var Camera = module.exports = function() {};
++
++util.extend(Camera.prototype, /** @lends Map.prototype */{
++    /**
++     * Get the current view geographical point.
++     * @returns {LngLat}
++     */
++    getCenter: function() { return this.transform.center; },
++
++    /**
++     * Sets a map location. Equivalent to `jumpTo({center: center})`.
++     *
++     * @param {LngLat} center Map center to jump to
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     * @example
++     * map.setCenter([-74, 38]);
++     */
++    setCenter: function(center, eventData) {
++        this.jumpTo({center: center}, eventData);
++        return this;
++    },
++
++    /**
++     * Pan by a certain number of pixels
++     *
++     * @param {Array<number>} offset [x, y]
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    panBy: function(offset, options, eventData) {
++        this.panTo(this.transform.center,
++            util.extend({offset: Point.convert(offset).mult(-1)}, options), eventData);
++        return this;
++    },
++
++    /**
++     * Pan to a certain location with easing
++     *
++     * @param {LngLat} lnglat Location to pan to
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    panTo: function(lnglat, options, eventData) {
++        return this.easeTo(util.extend({
++            center: lnglat
++        }, options), eventData);
++    },
++
++
++    /**
++     * Get the current zoom
++     * @returns {number}
++     */
++    getZoom: function() { return this.transform.zoom; },
++
++    /**
++     * Sets a map zoom. Equivalent to `jumpTo({zoom: zoom})`.
++     *
++     * @param {number} zoom Map zoom level
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     * @example
++     * // zoom the map to 5
++     * map.setZoom(5);
++     */
++    setZoom: function(zoom, eventData) {
++        this.jumpTo({zoom: zoom}, eventData);
++        return this;
++    },
++
++    /**
++     * Zooms to a certain zoom level with easing.
++     *
++     * @param {number} zoom
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     */
++    zoomTo: function(zoom, options, eventData) {
++        return this.easeTo(util.extend({
++            zoom: zoom
++        }, options), eventData);
++    },
++
++    /**
++     * Zoom in by 1 level
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     */
++    zoomIn: function(options, eventData) {
++        this.zoomTo(this.getZoom() + 1, options, eventData);
++        return this;
++    },
++
++    /**
++     * Zoom out by 1 level
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     */
++    zoomOut: function(options, eventData) {
++        this.zoomTo(this.getZoom() - 1, options, eventData);
++        return this;
++    },
++
++
++    /**
++     * Get the current bearing in degrees
++     * @returns {number}
++     */
++    getBearing: function() { return this.transform.bearing; },
++
++    /**
++     * Sets a map rotation. Equivalent to `jumpTo({bearing: bearing})`.
++     *
++     * @param {number} bearing Map rotation bearing in degrees counter-clockwise from north
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     * @example
++     * // rotate the map to 90 degrees
++     * map.setBearing(90);
++     */
++    setBearing: function(bearing, eventData) {
++        this.jumpTo({bearing: bearing}, eventData);
++        return this;
++    },
++
++    /**
++     * Rotate bearing by a certain number of degrees with easing
++     *
++     * @param {number} bearing
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    rotateTo: function(bearing, options, eventData) {
++        return this.easeTo(util.extend({
++            bearing: bearing
++        }, options), eventData);
++    },
+ 
+-/**
+- * Subtracts matrix b from matrix a
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @returns {mat2d} out
+- */
+-mat2d.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    out[4] = a[4] - b[4];
+-    out[5] = a[5] - b[5];
+-    return out;
+-};
++    /**
++     * Sets map bearing to 0 (north) with easing
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    resetNorth: function(options, eventData) {
++        this.rotateTo(0, util.extend({duration: 1000}, options), eventData);
++        return this;
++    },
+ 
+-/**
+- * Alias for {@link mat2d.subtract}
+- * @function
+- */
+-mat2d.sub = mat2d.subtract;
++    /**
++     * Animates map bearing to 0 (north) if it's already close to it.
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    snapToNorth: function(options, eventData) {
++        if (Math.abs(this.getBearing()) < this.options.bearingSnap) {
++            return this.resetNorth(options, eventData);
++        }
++        return this;
++    },
+ 
+-/**
+- * Multiply each element of the matrix by a scalar.
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat2d} out
+- */
+-mat2d.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    out[4] = a[4] * b;
+-    out[5] = a[5] * b;
+-    return out;
+-};
++    /**
++     * Get the current angle in degrees
++     * @returns {number}
++     */
++    getPitch: function() { return this.transform.pitch; },
+ 
+-/**
+- * Adds two mat2d's after multiplying each element of the second operand by a scalar value.
+- *
+- * @param {mat2d} out the receiving vector
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat2d} out
+- */
+-mat2d.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    out[4] = a[4] + (b[4] * scale);
+-    out[5] = a[5] + (b[5] * scale);
+-    return out;
+-};
++    /**
++     * Sets a map angle. Equivalent to `jumpTo({pitch: pitch})`.
++     *
++     * @param {number} pitch The angle at which the camera is looking at the ground
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    setPitch: function(pitch, eventData) {
++        this.jumpTo({pitch: pitch}, eventData);
++        return this;
++    },
+ 
+-/**
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {mat2d} a The first matrix.
+- * @param {mat2d} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat2d.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5];
+-};
+ 
+-/**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
+- *
+- * @param {mat2d} a The first matrix.
+- * @param {mat2d} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat2d.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
+-            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
+-            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)));
+-};
++    /**
++     * Zoom to contain certain geographical bounds
++     *
++     * @param {LngLatBounds|Array<Array<number>>} bounds [[minLng, minLat], [maxLng, maxLat]]
++     * @param {Object} options
++     * @param {boolean} [options.linear] When true, the map transitions to the new camera using
++     *     {@link #Map.easeTo}. When false, the map transitions using {@link #Map.flyTo}. See
++     *     {@link #Map.flyTo} for information on options specific to that animation transition.
++     * @param {Function} options.easing
++     * @param {number} options.padding how much padding there is around the given bounds on each side in pixels
++     * @param {number} options.maxZoom The resulting zoom level will be at most
++     *     this value.
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    fitBounds: function(bounds, options, eventData) {
+ 
+-module.exports = mat2d;
++        options = util.extend({
++            padding: 0,
++            offset: [0, 0],
++            maxZoom: Infinity
++        }, options);
+ 
+-},{"./common.js":134}],137:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++        bounds = LngLatBounds.convert(bounds);
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++        var offset = Point.convert(options.offset),
++            tr = this.transform,
++            nw = tr.project(bounds.getNorthWest()),
++            se = tr.project(bounds.getSouthEast()),
++            size = se.sub(nw),
++            scaleX = (tr.width - options.padding * 2 - Math.abs(offset.x) * 2) / size.x,
++            scaleY = (tr.height - options.padding * 2 - Math.abs(offset.y) * 2) / size.y;
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++        options.center = tr.unproject(nw.add(se).div(2));
++        options.zoom = Math.min(tr.scaleZoom(tr.scale * Math.min(scaleX, scaleY)), options.maxZoom);
++        options.bearing = 0;
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++        return options.linear ?
++            this.easeTo(options, eventData) :
++            this.flyTo(options, eventData);
++    },
+ 
+-var glMatrix = require("./common.js");
++    /**
++     * Change any combination of center, zoom, bearing, and pitch, without
++     * a transition. The map will retain the current values for any options
++     * not included in `options`.
++     *
++     * @param {CameraOptions} options map view options
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires rotate
++     * @fires pitch
++     * @fires zoomend
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    jumpTo: function(options, eventData) {
++        this.stop();
+ 
+-/**
+- * @class 3x3 Matrix
+- * @name mat3
+- */
+-var mat3 = {};
++        var tr = this.transform,
++            zoomChanged = false,
++            bearingChanged = false,
++            pitchChanged = false;
+ 
+-/**
+- * Creates a new identity mat3
+- *
+- * @returns {mat3} a new 3x3 matrix
+- */
+-mat3.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(9);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 1;
+-    out[5] = 0;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
+-};
++        if ('zoom' in options && tr.zoom !== +options.zoom) {
++            zoomChanged = true;
++            tr.zoom = +options.zoom;
++        }
+ 
+-/**
+- * Copies the upper-left 3x3 values into the given mat3.
+- *
+- * @param {mat3} out the receiving 3x3 matrix
+- * @param {mat4} a   the source 4x4 matrix
+- * @returns {mat3} out
+- */
+-mat3.fromMat4 = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[4];
+-    out[4] = a[5];
+-    out[5] = a[6];
+-    out[6] = a[8];
+-    out[7] = a[9];
+-    out[8] = a[10];
+-    return out;
+-};
++        if ('center' in options) {
++            tr.center = LngLat.convert(options.center);
++        }
+ 
+-/**
+- * Creates a new mat3 initialized with values from an existing matrix
+- *
+- * @param {mat3} a matrix to clone
+- * @returns {mat3} a new 3x3 matrix
+- */
+-mat3.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(9);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    return out;
+-};
++        if ('bearing' in options && tr.bearing !== +options.bearing) {
++            bearingChanged = true;
++            tr.bearing = +options.bearing;
++        }
+ 
+-/**
+- * Copy the values from one mat3 to another
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
+- */
+-mat3.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    return out;
+-};
++        if ('pitch' in options && tr.pitch !== +options.pitch) {
++            pitchChanged = true;
++            tr.pitch = +options.pitch;
++        }
+ 
+-/**
+- * Create a new mat3 with the given values
+- *
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m10 Component in column 1, row 0 position (index 3)
+- * @param {Number} m11 Component in column 1, row 1 position (index 4)
+- * @param {Number} m12 Component in column 1, row 2 position (index 5)
+- * @param {Number} m20 Component in column 2, row 0 position (index 6)
+- * @param {Number} m21 Component in column 2, row 1 position (index 7)
+- * @param {Number} m22 Component in column 2, row 2 position (index 8)
+- * @returns {mat3} A new mat3
+- */
+-mat3.fromValues = function(m00, m01, m02, m10, m11, m12, m20, m21, m22) {
+-    var out = new glMatrix.ARRAY_TYPE(9);
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m10;
+-    out[4] = m11;
+-    out[5] = m12;
+-    out[6] = m20;
+-    out[7] = m21;
+-    out[8] = m22;
+-    return out;
+-};
++        this.fire('movestart', eventData)
++            .fire('move', eventData);
+ 
+-/**
+- * Set the components of a mat3 to the given values
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m10 Component in column 1, row 0 position (index 3)
+- * @param {Number} m11 Component in column 1, row 1 position (index 4)
+- * @param {Number} m12 Component in column 1, row 2 position (index 5)
+- * @param {Number} m20 Component in column 2, row 0 position (index 6)
+- * @param {Number} m21 Component in column 2, row 1 position (index 7)
+- * @param {Number} m22 Component in column 2, row 2 position (index 8)
+- * @returns {mat3} out
+- */
+-mat3.set = function(out, m00, m01, m02, m10, m11, m12, m20, m21, m22) {
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m10;
+-    out[4] = m11;
+-    out[5] = m12;
+-    out[6] = m20;
+-    out[7] = m21;
+-    out[8] = m22;
+-    return out;
+-};
++        if (zoomChanged) {
++            this.fire('zoomstart', eventData)
++                .fire('zoom', eventData)
++                .fire('zoomend', eventData);
++        }
+ 
+-/**
+- * Set a mat3 to the identity matrix
+- *
+- * @param {mat3} out the receiving matrix
+- * @returns {mat3} out
+- */
+-mat3.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 1;
+-    out[5] = 0;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
+-};
++        if (bearingChanged) {
++            this.fire('rotate', eventData);
++        }
+ 
+-/**
+- * Transpose the values of a mat3
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
+- */
+-mat3.transpose = function(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a01 = a[1], a02 = a[2], a12 = a[5];
+-        out[1] = a[3];
+-        out[2] = a[6];
+-        out[3] = a01;
+-        out[5] = a[7];
+-        out[6] = a02;
+-        out[7] = a12;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[3];
+-        out[2] = a[6];
+-        out[3] = a[1];
+-        out[4] = a[4];
+-        out[5] = a[7];
+-        out[6] = a[2];
+-        out[7] = a[5];
+-        out[8] = a[8];
+-    }
+-    
+-    return out;
+-};
++        if (pitchChanged) {
++            this.fire('pitch', eventData);
++        }
+ 
+-/**
+- * Inverts a mat3
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
+- */
+-mat3.invert = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
++        return this.fire('moveend', eventData);
++    },
+ 
+-        b01 = a22 * a11 - a12 * a21,
+-        b11 = -a22 * a10 + a12 * a20,
+-        b21 = a21 * a10 - a11 * a20,
++    /**
++     * Change any combination of center, zoom, bearing, and pitch, with a smooth animation
++     * between old and new values. The map will retain the current values for any options
++     * not included in `options`.
++     *
++     * @param {CameraOptions|AnimationOptions} options map view and animation options
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires rotate
++     * @fires pitch
++     * @fires zoomend
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    easeTo: function(options, eventData) {
++        this.stop();
+ 
+-        // Calculate the determinant
+-        det = a00 * b01 + a01 * b11 + a02 * b21;
++        options = util.extend({
++            offset: [0, 0],
++            duration: 500,
++            easing: util.ease
++        }, options);
+ 
+-    if (!det) { 
+-        return null; 
+-    }
+-    det = 1.0 / det;
++        var tr = this.transform,
++            offset = Point.convert(options.offset),
++            startZoom = this.getZoom(),
++            startBearing = this.getBearing(),
++            startPitch = this.getPitch(),
+ 
+-    out[0] = b01 * det;
+-    out[1] = (-a22 * a01 + a02 * a21) * det;
+-    out[2] = (a12 * a01 - a02 * a11) * det;
+-    out[3] = b11 * det;
+-    out[4] = (a22 * a00 - a02 * a20) * det;
+-    out[5] = (-a12 * a00 + a02 * a10) * det;
+-    out[6] = b21 * det;
+-    out[7] = (-a21 * a00 + a01 * a20) * det;
+-    out[8] = (a11 * a00 - a01 * a10) * det;
+-    return out;
+-};
++            zoom = 'zoom' in options ? +options.zoom : startZoom,
++            bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing,
++            pitch = 'pitch' in options ? +options.pitch : startPitch,
+ 
+-/**
+- * Calculates the adjugate of a mat3
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
+- */
+-mat3.adjoint = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8];
++            toLngLat,
++            toPoint;
+ 
+-    out[0] = (a11 * a22 - a12 * a21);
+-    out[1] = (a02 * a21 - a01 * a22);
+-    out[2] = (a01 * a12 - a02 * a11);
+-    out[3] = (a12 * a20 - a10 * a22);
+-    out[4] = (a00 * a22 - a02 * a20);
+-    out[5] = (a02 * a10 - a00 * a12);
+-    out[6] = (a10 * a21 - a11 * a20);
+-    out[7] = (a01 * a20 - a00 * a21);
+-    out[8] = (a00 * a11 - a01 * a10);
+-    return out;
+-};
++        if ('center' in options) {
++            toLngLat = LngLat.convert(options.center);
++            toPoint = tr.centerPoint.add(offset);
++        } else if ('around' in options) {
++            toLngLat = LngLat.convert(options.around);
++            toPoint = tr.locationPoint(toLngLat);
++        } else {
++            toPoint = tr.centerPoint.add(offset);
++            toLngLat = tr.pointLocation(toPoint);
++        }
+ 
+-/**
+- * Calculates the determinant of a mat3
+- *
+- * @param {mat3} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-mat3.determinant = function (a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8];
++        var fromPoint = tr.locationPoint(toLngLat);
+ 
+-    return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);
+-};
++        if (options.animate === false) options.duration = 0;
+ 
+-/**
+- * Multiplies two mat3's
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @returns {mat3} out
+- */
+-mat3.multiply = function (out, a, b) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
++        this.zooming = (zoom !== startZoom);
++        this.rotating = (startBearing !== bearing);
++        this.pitching = (pitch !== startPitch);
+ 
+-        b00 = b[0], b01 = b[1], b02 = b[2],
+-        b10 = b[3], b11 = b[4], b12 = b[5],
+-        b20 = b[6], b21 = b[7], b22 = b[8];
++        if (!options.noMoveStart) {
++            this.fire('movestart', eventData);
++        }
++        if (this.zooming) {
++            this.fire('zoomstart', eventData);
++        }
+ 
+-    out[0] = b00 * a00 + b01 * a10 + b02 * a20;
+-    out[1] = b00 * a01 + b01 * a11 + b02 * a21;
+-    out[2] = b00 * a02 + b01 * a12 + b02 * a22;
++        clearTimeout(this._onEaseEnd);
+ 
+-    out[3] = b10 * a00 + b11 * a10 + b12 * a20;
+-    out[4] = b10 * a01 + b11 * a11 + b12 * a21;
+-    out[5] = b10 * a02 + b11 * a12 + b12 * a22;
++        this._ease(function (k) {
++            if (this.zooming) {
++                tr.zoom = interpolate(startZoom, zoom, k);
++            }
+ 
+-    out[6] = b20 * a00 + b21 * a10 + b22 * a20;
+-    out[7] = b20 * a01 + b21 * a11 + b22 * a21;
+-    out[8] = b20 * a02 + b21 * a12 + b22 * a22;
+-    return out;
+-};
++            if (this.rotating) {
++                tr.bearing = interpolate(startBearing, bearing, k);
++            }
+ 
+-/**
+- * Alias for {@link mat3.multiply}
+- * @function
+- */
+-mat3.mul = mat3.multiply;
++            if (this.pitching) {
++                tr.pitch = interpolate(startPitch, pitch, k);
++            }
+ 
+-/**
+- * Translate a mat3 by the given vector
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to translate
+- * @param {vec2} v vector to translate by
+- * @returns {mat3} out
+- */
+-mat3.translate = function(out, a, v) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
+-        x = v[0], y = v[1];
++            tr.setLocationAtPoint(toLngLat, fromPoint.add(toPoint.sub(fromPoint)._mult(k)));
+ 
+-    out[0] = a00;
+-    out[1] = a01;
+-    out[2] = a02;
++            this.fire('move', eventData);
++            if (this.zooming) {
++                this.fire('zoom', eventData);
++            }
++            if (this.rotating) {
++                this.fire('rotate', eventData);
++            }
++            if (this.pitching) {
++                this.fire('pitch', eventData);
++            }
++        }, function() {
++            if (options.delayEndEvents) {
++                this._onEaseEnd = setTimeout(this._easeToEnd.bind(this, eventData), options.delayEndEvents);
++            } else {
++                this._easeToEnd(eventData);
++            }
++        }.bind(this), options);
+ 
+-    out[3] = a10;
+-    out[4] = a11;
+-    out[5] = a12;
++        return this;
++    },
+ 
+-    out[6] = x * a00 + y * a10 + a20;
+-    out[7] = x * a01 + y * a11 + a21;
+-    out[8] = x * a02 + y * a12 + a22;
+-    return out;
+-};
++    _easeToEnd: function(eventData) {
++        if (this.zooming) {
++            this.fire('zoomend', eventData);
++        }
++        this.fire('moveend', eventData);
+ 
+-/**
+- * Rotates a mat3 by the given angle
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat3} out
+- */
+-mat3.rotate = function (out, a, rad) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
++        this.zooming = false;
++        this.rotating = false;
++        this.pitching = false;
++    },
+ 
+-        s = Math.sin(rad),
+-        c = Math.cos(rad);
++    /**
++     * Change any combination of center, zoom, bearing, and pitch, animated along a curve that
++     * evokes flight. The transition animation seamlessly incorporates zooming and panning to help
++     * the user find his or her bearings even after traversing a great distance.
++     *
++     * @param {CameraOptions|AnimationOptions} options map view and animation options
++     * @param {number} [options.curve=1.42] Relative amount of zooming that takes place along the
++     *     flight path. A high value maximizes zooming for an exaggerated animation, while a low
++     *     value minimizes zooming for something closer to {@link #Map.easeTo}. 1.42 is the average
++     *     value selected by participants in the user study in
++     *     [van Wijk (2003)](https://www.win.tue.nl/~vanwijk/zoompan.pdf). A value of
++     *     `Math.pow(6, 0.25)` would be equivalent to the root mean squared average velocity. A
++     *     value of 1 would produce a circular motion.
++     * @param {number} [options.minZoom] Zero-based zoom level at the peak of the flight path. If
++     *     `options.curve` is specified, this option is ignored.
++     * @param {number} [options.speed=1.2] Average speed of the animation. A speed of 1.2 means that
++     *     the map appears to move along the flight path by 1.2 times `options.curve` screenfuls every
++     *     second. A _screenful_ is the visible span in pixels. It does not correspond to a fixed
++     *     physical distance but rather varies by zoom level.
++     * @param {number} [options.screenSpeed] Average speed of the animation, measured in screenfuls
++     *     per second, assuming a linear timing curve. If `options.speed` is specified, this option
++     *     is ignored.
++     * @param {Function} [options.easing] Transition timing curve
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires rotate
++     * @fires pitch
++     * @fires zoomend
++     * @fires moveend
++     * @returns {this}
++     * @example
++     * // fly with default options to null island
++     * map.flyTo({center: [0, 0], zoom: 9});
++     * // using flyTo options
++     * map.flyTo({
++     *   center: [0, 0],
++     *   zoom: 9,
++     *   speed: 0.2,
++     *   curve: 1,
++     *   easing: function(t) {
++     *     return t;
++     *   }
++     * });
++     */
++    flyTo: function(options, eventData) {
++        // This method implements an “optimal path” animation, as detailed in:
++        //
++        // Van Wijk, Jarke J.; Nuij, Wim A. A. “Smooth and efficient zooming and panning.” INFOVIS
++        //   ’03. pp. 15–22. <https://www.win.tue.nl/~vanwijk/zoompan.pdf#page=5>.
++        //
++        // Where applicable, local variable documentation begins with the associated variable or
++        // function in van Wijk (2003).
+ 
+-    out[0] = c * a00 + s * a10;
+-    out[1] = c * a01 + s * a11;
+-    out[2] = c * a02 + s * a12;
++        this.stop();
+ 
+-    out[3] = c * a10 - s * a00;
+-    out[4] = c * a11 - s * a01;
+-    out[5] = c * a12 - s * a02;
++        options = util.extend({
++            offset: [0, 0],
++            speed: 1.2,
++            curve: 1.42,
++            easing: util.ease
++        }, options);
+ 
+-    out[6] = a20;
+-    out[7] = a21;
+-    out[8] = a22;
+-    return out;
+-};
++        var tr = this.transform,
++            offset = Point.convert(options.offset),
++            startZoom = this.getZoom(),
++            startBearing = this.getBearing(),
++            startPitch = this.getPitch();
+ 
+-/**
+- * Scales the mat3 by the dimensions in the given vec2
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to rotate
+- * @param {vec2} v the vec2 to scale the matrix by
+- * @returns {mat3} out
+- **/
+-mat3.scale = function(out, a, v) {
+-    var x = v[0], y = v[1];
++        var center = 'center' in options ? LngLat.convert(options.center) : this.getCenter();
++        var zoom = 'zoom' in options ?  +options.zoom : startZoom;
++        var bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing;
++        var pitch = 'pitch' in options ? +options.pitch : startPitch;
+ 
+-    out[0] = x * a[0];
+-    out[1] = x * a[1];
+-    out[2] = x * a[2];
++        // If a path crossing the antimeridian would be shorter, extend the final coordinate so that
++        // interpolating between the two endpoints will cross it.
++        if (Math.abs(tr.center.lng) + Math.abs(center.lng) > 180) {
++            if (tr.center.lng > 0 && center.lng < 0) {
++                center.lng += 360;
++            } else if (tr.center.lng < 0 && center.lng > 0) {
++                center.lng -= 360;
++            }
++        }
+ 
+-    out[3] = y * a[3];
+-    out[4] = y * a[4];
+-    out[5] = y * a[5];
++        var scale = tr.zoomScale(zoom - startZoom),
++            from = tr.point,
++            to = 'center' in options ? tr.project(center).sub(offset.div(scale)) : from;
+ 
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    return out;
+-};
++        var startWorldSize = tr.worldSize,
++            rho = options.curve,
+ 
+-/**
+- * Creates a matrix from a vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat3.identity(dest);
+- *     mat3.translate(dest, dest, vec);
+- *
+- * @param {mat3} out mat3 receiving operation result
+- * @param {vec2} v Translation vector
+- * @returns {mat3} out
+- */
+-mat3.fromTranslation = function(out, v) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 1;
+-    out[5] = 0;
+-    out[6] = v[0];
+-    out[7] = v[1];
+-    out[8] = 1;
+-    return out;
+-}
++            // w₀: Initial visible span, measured in pixels at the initial scale.
++            w0 = Math.max(tr.width, tr.height),
++            // w₁: Final visible span, measured in pixels with respect to the initial scale.
++            w1 = w0 / scale,
++            // Length of the flight path as projected onto the ground plane, measured in pixels from
++            // the world image origin at the initial scale.
++            u1 = to.sub(from).mag();
+ 
+-/**
+- * Creates a matrix from a given angle
+- * This is equivalent to (but much faster than):
+- *
+- *     mat3.identity(dest);
+- *     mat3.rotate(dest, dest, rad);
+- *
+- * @param {mat3} out mat3 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat3} out
+- */
+-mat3.fromRotation = function(out, rad) {
+-    var s = Math.sin(rad), c = Math.cos(rad);
++        if ('minZoom' in options) {
++            var minZoom = util.clamp(Math.min(options.minZoom, startZoom, zoom), tr.minZoom, tr.maxZoom);
++            // w<sub>m</sub>: Maximum visible span, measured in pixels with respect to the initial
++            // scale.
++            var wMax = w0 / tr.zoomScale(minZoom - startZoom);
++            rho = Math.sqrt(wMax / u1 * 2);
++        }
+ 
+-    out[0] = c;
+-    out[1] = s;
+-    out[2] = 0;
++        // ρ²
++        var rho2 = rho * rho;
+ 
+-    out[3] = -s;
+-    out[4] = c;
+-    out[5] = 0;
++        /**
++         * rᵢ: Returns the zoom-out factor at one end of the animation.
++         *
++         * @param i 0 for the ascent or 1 for the descent.
++         * @private
++         */
++        function r(i) {
++            var b = (w1 * w1 - w0 * w0 + (i ? -1 : 1) * rho2 * rho2 * u1 * u1) / (2 * (i ? w1 : w0) * rho2 * u1);
++            return Math.log(Math.sqrt(b * b + 1) - b);
++        }
+ 
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
+-}
++        function sinh(n) { return (Math.exp(n) - Math.exp(-n)) / 2; }
++        function cosh(n) { return (Math.exp(n) + Math.exp(-n)) / 2; }
++        function tanh(n) { return sinh(n) / cosh(n); }
+ 
+-/**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat3.identity(dest);
+- *     mat3.scale(dest, dest, vec);
+- *
+- * @param {mat3} out mat3 receiving operation result
+- * @param {vec2} v Scaling vector
+- * @returns {mat3} out
+- */
+-mat3.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
++        // r₀: Zoom-out factor during ascent.
++        var r0 = r(0),
++            /**
++             * w(s): Returns the visible span on the ground, measured in pixels with respect to the
++             * initial scale.
++             *
++             * Assumes an angular field of view of 2 arctan ½ ≈ 53°.
++             * @private
++             */
++            w = function (s) { return (cosh(r0) / cosh(r0 + rho * s)); },
++            /**
++             * u(s): Returns the distance along the flight path as projected onto the ground plane,
++             * measured in pixels from the world image origin at the initial scale.
++             * @private
++             */
++            u = function (s) { return w0 * ((cosh(r0) * tanh(r0 + rho * s) - sinh(r0)) / rho2) / u1; },
++            // S: Total length of the flight path, measured in ρ-screenfuls.
++            S = (r(1) - r0) / rho;
+ 
+-    out[3] = 0;
+-    out[4] = v[1];
+-    out[5] = 0;
++        // When u₀ = u₁, the optimal path doesn’t require both ascent and descent.
++        if (Math.abs(u1) < 0.000001) {
++            // Perform a more or less instantaneous transition if the path is too short.
++            if (Math.abs(w0 - w1) < 0.000001) return this.easeTo(options);
+ 
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
+-}
++            var k = w1 < w0 ? -1 : 1;
++            S = Math.abs(Math.log(w1 / w0)) / rho;
+ 
+-/**
+- * Copies the values from a mat2d into a mat3
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat2d} a the matrix to copy
+- * @returns {mat3} out
+- **/
+-mat3.fromMat2d = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = 0;
++            u = function() { return 0; };
++            w = function(s) { return Math.exp(k * rho * s); };
++        }
+ 
+-    out[3] = a[2];
+-    out[4] = a[3];
+-    out[5] = 0;
++        if ('duration' in options) {
++            options.duration = +options.duration;
++        } else {
++            var V = 'screenSpeed' in options ? +options.screenSpeed / rho : +options.speed;
++            options.duration = 1000 * S / V;
++        }
+ 
+-    out[6] = a[4];
+-    out[7] = a[5];
+-    out[8] = 1;
+-    return out;
+-};
++        this.zooming = true;
++        if (startBearing !== bearing) this.rotating = true;
++        if (startPitch !== pitch) this.pitching = true;
+ 
+-/**
+-* Calculates a 3x3 matrix from the given quaternion
+-*
+-* @param {mat3} out mat3 receiving operation result
+-* @param {quat} q Quaternion to create matrix from
+-*
+-* @returns {mat3} out
+-*/
+-mat3.fromQuat = function (out, q) {
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++        this.fire('movestart', eventData);
++        this.fire('zoomstart', eventData);
+ 
+-        xx = x * x2,
+-        yx = y * x2,
+-        yy = y * y2,
+-        zx = z * x2,
+-        zy = z * y2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++        this._ease(function (k) {
++            // s: The distance traveled along the flight path, measured in ρ-screenfuls.
++            var s = k * S,
++                us = u(s);
+ 
+-    out[0] = 1 - yy - zz;
+-    out[3] = yx - wz;
+-    out[6] = zx + wy;
++            tr.zoom = startZoom + tr.scaleZoom(1 / w(s));
++            tr.center = tr.unproject(from.add(to.sub(from).mult(us)), startWorldSize);
+ 
+-    out[1] = yx + wz;
+-    out[4] = 1 - xx - zz;
+-    out[7] = zy - wx;
++            if (this.rotating) {
++                tr.bearing = interpolate(startBearing, bearing, k);
++            }
++            if (this.pitching) {
++                tr.pitch = interpolate(startPitch, pitch, k);
++            }
+ 
+-    out[2] = zx - wy;
+-    out[5] = zy + wx;
+-    out[8] = 1 - xx - yy;
++            this.fire('move', eventData);
++            this.fire('zoom', eventData);
++            if (this.rotating) {
++                this.fire('rotate', eventData);
++            }
++            if (this.pitching) {
++                this.fire('pitch', eventData);
++            }
++        }, function() {
++            this.fire('zoomend', eventData);
++            this.fire('moveend', eventData);
++            this.zooming = false;
++            this.rotating = false;
++            this.pitching = false;
++        }, options);
+ 
+-    return out;
+-};
++        return this;
++    },
+ 
+-/**
+-* Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix
+-*
+-* @param {mat3} out mat3 receiving operation result
+-* @param {mat4} a Mat4 to derive the normal matrix from
+-*
+-* @returns {mat3} out
+-*/
+-mat3.normalFromMat4 = function (out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++    isEasing: function() {
++        return !!this._abortFn;
++    },
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32,
++    /**
++     * Stop current animation
++     *
++     * @returns {Map} `this`
++     */
++    stop: function() {
++        if (this._abortFn) {
++            this._abortFn();
++            this._finishEase();
++        }
++        return this;
++    },
+ 
+-        // Calculate the determinant
+-        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++    _ease: function(frame, finish, options) {
++        this._finishFn = finish;
++        this._abortFn = browser.timed(function (t) {
++            frame.call(this, options.easing(t));
++            if (t === 1) {
++                this._finishEase();
++            }
++        }, options.animate === false ? 0 : options.duration, this);
++    },
+ 
+-    if (!det) { 
+-        return null; 
+-    }
+-    det = 1.0 / det;
++    _finishEase: function() {
++        delete this._abortFn;
++        // The finish function might emit events which trigger new eases, which
++        // set a new _finishFn. Ensure we don't delete it unintentionally.
++        var finish = this._finishFn;
++        delete this._finishFn;
++        finish.call(this);
++    },
+ 
+-    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+-    out[1] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+-    out[2] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
++    // convert bearing so that it's numerically close to the current one so that it interpolates properly
++    _normalizeBearing: function(bearing, currentBearing) {
++        bearing = util.wrap(bearing, -180, 180);
++        var diff = Math.abs(bearing - currentBearing);
++        if (Math.abs(bearing - 360 - currentBearing) < diff) bearing -= 360;
++        if (Math.abs(bearing + 360 - currentBearing) < diff) bearing += 360;
++        return bearing;
++    },
+ 
+-    out[3] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+-    out[4] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+-    out[5] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
++    _updateEasing: function(duration, zoom, bezier) {
++        var easing;
+ 
+-    out[6] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+-    out[7] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+-    out[8] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
++        if (this.ease) {
++            var ease = this.ease,
++                t = (Date.now() - ease.start) / ease.duration,
++                speed = ease.easing(t + 0.01) - ease.easing(t),
+ 
+-    return out;
+-};
++                // Quick hack to make new bezier that is continuous with last
++                x = 0.27 / Math.sqrt(speed * speed + 0.0001) * 0.01,
++                y = Math.sqrt(0.27 * 0.27 - x * x);
+ 
+-/**
+- * Returns a string representation of a mat3
+- *
+- * @param {mat3} mat matrix to represent as a string
+- * @returns {String} string representation of the matrix
+- */
+-mat3.str = function (a) {
+-    return 'mat3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
+-                    a[3] + ', ' + a[4] + ', ' + a[5] + ', ' + 
+-                    a[6] + ', ' + a[7] + ', ' + a[8] + ')';
+-};
++            easing = util.bezier(x, y, 0.25, 1);
++        } else {
++            easing = bezier ? util.bezier.apply(util, bezier) : util.ease;
++        }
+ 
+-/**
+- * Returns Frobenius norm of a mat3
+- *
+- * @param {mat3} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
+- */
+-mat3.frob = function (a) {
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2)))
+-};
++        // store information on current easing
++        this.ease = {
++            start: (new Date()).getTime(),
++            to: Math.pow(2, zoom),
++            duration: duration,
++            easing: easing
++        };
+ 
+-/**
+- * Adds two mat3's
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @returns {mat3} out
+- */
+-mat3.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    out[4] = a[4] + b[4];
+-    out[5] = a[5] + b[5];
+-    out[6] = a[6] + b[6];
+-    out[7] = a[7] + b[7];
+-    out[8] = a[8] + b[8];
+-    return out;
+-};
++        return easing;
++    }
++});
+ 
+ /**
+- * Subtracts matrix b from matrix a
++ * Pitch event. This event is emitted whenever the map's pitch changes.
+  *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @returns {mat3} out
++ * @event pitch
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat3.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    out[4] = a[4] - b[4];
+-    out[5] = a[5] - b[5];
+-    out[6] = a[6] - b[6];
+-    out[7] = a[7] - b[7];
+-    out[8] = a[8] - b[8];
+-    return out;
+-};
+ 
+-/**
+- * Alias for {@link mat3.subtract}
+- * @function
+- */
+-mat3.sub = mat3.subtract;
++},{"../geo/lng_lat":76,"../geo/lng_lat_bounds":77,"../util/browser":155,"../util/interpolate":163,"../util/util":169,"point-geometry":174}],138:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Multiply each element of the matrix by a scalar.
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat3} out
+- */
+-mat3.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    out[4] = a[4] * b;
+-    out[5] = a[5] * b;
+-    out[6] = a[6] * b;
+-    out[7] = a[7] * b;
+-    out[8] = a[8] * b;
+-    return out;
+-};
++var Control = require('./control');
++var DOM = require('../../util/dom');
++var util = require('../../util/util');
++
++module.exports = Attribution;
+ 
+ /**
+- * Adds two mat3's after multiplying each element of the second operand by a scalar value.
+- *
+- * @param {mat3} out the receiving vector
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat3} out
++ * Creates an attribution control
++ * @class Attribution
++ * @param {Object} [options]
++ * @param {string} [options.position='bottom-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
++ * @example
++ * var map = new mapboxgl.Map({attributionControl: false})
++ *     .addControl(new mapboxgl.Attribution({position: 'top-left'}));
+  */
+-mat3.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    out[4] = a[4] + (b[4] * scale);
+-    out[5] = a[5] + (b[5] * scale);
+-    out[6] = a[6] + (b[6] * scale);
+-    out[7] = a[7] + (b[7] * scale);
+-    out[8] = a[8] + (b[8] * scale);
+-    return out;
+-};
++function Attribution(options) {
++    util.setOptions(this, options);
++}
+ 
+-/*
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {mat3} a The first matrix.
+- * @param {mat3} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat3.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && 
+-           a[3] === b[3] && a[4] === b[4] && a[5] === b[5] &&
+-           a[6] === b[6] && a[7] === b[7] && a[8] === b[8];
+-};
++Attribution.createAttributionString = function(sources) {
++    var attributions = [];
+ 
+-/**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
+- *
+- * @param {mat3} a The first matrix.
+- * @param {mat3} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat3.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5], a6 = a[6], a7 = a[7], a8 = a[8];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5], b6 = a[6], b7 = b[7], b8 = b[8];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
+-            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
+-            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
+-            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
+-            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
+-            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)));
+-};
++    for (var id in sources) {
++        var source = sources[id];
++        if (source.attribution && attributions.indexOf(source.attribution) < 0) {
++            attributions.push(source.attribution);
++        }
++    }
+ 
++    // remove any entries that are substrings of another entry.
++    // first sort by length so that substrings come first
++    attributions.sort(function (a, b) { return a.length - b.length; });
++    attributions = attributions.filter(function (attrib, i) {
++        for (var j = i + 1; j < attributions.length; j++) {
++            if (attributions[j].indexOf(attrib) >= 0) { return false; }
++        }
++        return true;
++    });
+ 
+-module.exports = mat3;
++    return attributions.join(' | ');
++};
+ 
+-},{"./common.js":134}],138:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++Attribution.prototype = util.inherit(Control, {
++    options: {
++        position: 'bottom-right'
++    },
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    onAdd: function(map) {
++        var className = 'mapboxgl-ctrl-attrib',
++            container = this._container = DOM.create('div', className, map.getContainer());
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++        this._update();
++        map.on('source.load', this._update.bind(this));
++        map.on('source.change', this._update.bind(this));
++        map.on('source.remove', this._update.bind(this));
++        map.on('moveend', this._updateEditLink.bind(this));
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++        return container;
++    },
+ 
+-var glMatrix = require("./common.js");
++    _update: function() {
++        if (this._map.style) {
++            this._container.innerHTML = Attribution.createAttributionString(this._map.style.sources);
++        }
+ 
+-/**
+- * @class 4x4 Matrix
+- * @name mat4
+- */
+-var mat4 = {
+-  scalar: {},
+-  SIMD: {},
+-};
++        this._editLink = this._container.getElementsByClassName('mapbox-improve-map')[0];
++        this._updateEditLink();
++    },
+ 
+-/**
+- * Creates a new identity mat4
+- *
+- * @returns {mat4} a new 4x4 matrix
+- */
+-mat4.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(16);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-};
++    _updateEditLink: function() {
++        if (this._editLink) {
++            var center = this._map.getCenter();
++            this._editLink.href = 'https://www.mapbox.com/map-feedback/#/' +
++                    center.lng + '/' + center.lat + '/' + Math.round(this._map.getZoom() + 1);
++        }
++    }
++});
+ 
+-/**
+- * Creates a new mat4 initialized with values from an existing matrix
+- *
+- * @param {mat4} a matrix to clone
+- * @returns {mat4} a new 4x4 matrix
+- */
+-mat4.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(16);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    out[9] = a[9];
+-    out[10] = a[10];
+-    out[11] = a[11];
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++},{"../../util/dom":158,"../../util/util":169,"./control":139}],139:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Copy the values from one mat4 to another
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-mat4.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    out[9] = a[9];
+-    out[10] = a[10];
+-    out[11] = a[11];
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++module.exports = Control;
+ 
+ /**
+- * Create a new mat4 with the given values
++ * A base class for map-related interface elements.
+  *
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m03 Component in column 0, row 3 position (index 3)
+- * @param {Number} m10 Component in column 1, row 0 position (index 4)
+- * @param {Number} m11 Component in column 1, row 1 position (index 5)
+- * @param {Number} m12 Component in column 1, row 2 position (index 6)
+- * @param {Number} m13 Component in column 1, row 3 position (index 7)
+- * @param {Number} m20 Component in column 2, row 0 position (index 8)
+- * @param {Number} m21 Component in column 2, row 1 position (index 9)
+- * @param {Number} m22 Component in column 2, row 2 position (index 10)
+- * @param {Number} m23 Component in column 2, row 3 position (index 11)
+- * @param {Number} m30 Component in column 3, row 0 position (index 12)
+- * @param {Number} m31 Component in column 3, row 1 position (index 13)
+- * @param {Number} m32 Component in column 3, row 2 position (index 14)
+- * @param {Number} m33 Component in column 3, row 3 position (index 15)
+- * @returns {mat4} A new mat4
++ * @class Control
+  */
+-mat4.fromValues = function(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
+-    var out = new glMatrix.ARRAY_TYPE(16);
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m03;
+-    out[4] = m10;
+-    out[5] = m11;
+-    out[6] = m12;
+-    out[7] = m13;
+-    out[8] = m20;
+-    out[9] = m21;
+-    out[10] = m22;
+-    out[11] = m23;
+-    out[12] = m30;
+-    out[13] = m31;
+-    out[14] = m32;
+-    out[15] = m33;
+-    return out;
+-};
++function Control() {}
+ 
+-/**
+- * Set the components of a mat4 to the given values
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m03 Component in column 0, row 3 position (index 3)
+- * @param {Number} m10 Component in column 1, row 0 position (index 4)
+- * @param {Number} m11 Component in column 1, row 1 position (index 5)
+- * @param {Number} m12 Component in column 1, row 2 position (index 6)
+- * @param {Number} m13 Component in column 1, row 3 position (index 7)
+- * @param {Number} m20 Component in column 2, row 0 position (index 8)
+- * @param {Number} m21 Component in column 2, row 1 position (index 9)
+- * @param {Number} m22 Component in column 2, row 2 position (index 10)
+- * @param {Number} m23 Component in column 2, row 3 position (index 11)
+- * @param {Number} m30 Component in column 3, row 0 position (index 12)
+- * @param {Number} m31 Component in column 3, row 1 position (index 13)
+- * @param {Number} m32 Component in column 3, row 2 position (index 14)
+- * @param {Number} m33 Component in column 3, row 3 position (index 15)
+- * @returns {mat4} out
+- */
+-mat4.set = function(out, m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m03;
+-    out[4] = m10;
+-    out[5] = m11;
+-    out[6] = m12;
+-    out[7] = m13;
+-    out[8] = m20;
+-    out[9] = m21;
+-    out[10] = m22;
+-    out[11] = m23;
+-    out[12] = m30;
+-    out[13] = m31;
+-    out[14] = m32;
+-    out[15] = m33;
+-    return out;
+-};
++Control.prototype = {
++    /**
++     * Add this control to the map, returning the control itself
++     * for chaining. This will insert the control's DOM element into
++     * the map's DOM element if the control has a `position` specified.
++     *
++     * @param {Map} map
++     * @returns {Control} `this`
++     */
++    addTo: function(map) {
++        this._map = map;
++        var container = this._container = this.onAdd(map);
++        if (this.options && this.options.position) {
++            var pos = this.options.position;
++            var corner = map._controlCorners[pos];
++            container.className += ' mapboxgl-ctrl';
++            if (pos.indexOf('bottom') !== -1) {
++                corner.insertBefore(container, corner.firstChild);
++            } else {
++                corner.appendChild(container);
++            }
++        }
+ 
++        return this;
++    },
+ 
+-/**
+- * Set a mat4 to the identity matrix
+- *
+- * @param {mat4} out the receiving matrix
+- * @returns {mat4} out
+- */
+-mat4.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
++    /**
++     * Remove this control from the map it has been added to.
++     *
++     * @returns {Control} `this`
++     */
++    remove: function() {
++        this._container.parentNode.removeChild(this._container);
++        if (this.onRemove) this.onRemove(this._map);
++        this._map = null;
++        return this;
++    }
+ };
+ 
++},{}],140:[function(require,module,exports){
++'use strict';
++
++var Control = require('./control');
++var browser = require('../../util/browser');
++var DOM = require('../../util/dom');
++var util = require('../../util/util');
++
++module.exports = Geolocate;
++
++var geoOptions = { enableHighAccuracy: false, timeout: 6000 /* 6sec */ };
++
++
+ /**
+- * Transpose the values of a mat4 not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * Creates a geolocation control
++ * @class Geolocate
++ * @param {Object} [options]
++ * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
++ * @example
++ * map.addControl(new mapboxgl.Geolocate({position: 'top-left'})); // position is optional
+  */
+-mat4.scalar.transpose = function(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a01 = a[1], a02 = a[2], a03 = a[3],
+-            a12 = a[6], a13 = a[7],
+-            a23 = a[11];
++function Geolocate(options) {
++    util.setOptions(this, options);
++}
+ 
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a01;
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a02;
+-        out[9] = a12;
+-        out[11] = a[14];
+-        out[12] = a03;
+-        out[13] = a13;
+-        out[14] = a23;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a[1];
+-        out[5] = a[5];
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a[2];
+-        out[9] = a[6];
+-        out[10] = a[10];
+-        out[11] = a[14];
+-        out[12] = a[3];
+-        out[13] = a[7];
+-        out[14] = a[11];
+-        out[15] = a[15];
++Geolocate.prototype = util.inherit(Control, {
++    options: {
++        position: 'top-right'
++    },
++
++    onAdd: function(map) {
++        var className = 'mapboxgl-ctrl';
++
++        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
++        if (!browser.supportsGeolocation) return container;
++
++        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
++
++        this._geolocateButton = DOM.create('button', (className + '-icon ' + className + '-geolocate'), this._container);
++        this._geolocateButton.addEventListener('click', this._onClickGeolocate.bind(this));
++        return container;
++    },
++
++    _onContextMenu: function(e) {
++        e.preventDefault();
++    },
++
++    _onClickGeolocate: function() {
++        navigator.geolocation.getCurrentPosition(this._success.bind(this), this._error.bind(this), geoOptions);
++
++        // This timeout ensures that we still call finish() even if
++        // the user declines to share their location in Firefox
++        this._timeoutId = setTimeout(this._finish.bind(this), 10000 /* 10sec */);
++    },
++
++    _success: function(position) {
++        this._map.jumpTo({
++            center: [position.coords.longitude, position.coords.latitude],
++            zoom: 17,
++            bearing: 0,
++            pitch: 0
++        });
++        this._finish();
++    },
++
++    _error: function() {
++        this._finish();
++    },
++
++    _finish: function() {
++        if (this._timeoutId) { clearTimeout(this._timeoutId); }
++        this._timeoutId = undefined;
+     }
+ 
+-    return out;
+-};
++});
++
++
++},{"../../util/browser":155,"../../util/dom":158,"../../util/util":169,"./control":139}],141:[function(require,module,exports){
++'use strict';
++
++var Control = require('./control');
++var DOM = require('../../util/dom');
++var util = require('../../util/util');
++
++module.exports = Navigation;
+ 
+ /**
+- * Transpose the values of a mat4 using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * Creates a navigation control with zoom buttons and a compass
++ * @class Navigation
++ * @param {Object} [options]
++ * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
++ * @example
++ * map.addControl(new mapboxgl.Navigation({position: 'top-left'})); // position is optional
+  */
+-mat4.SIMD.transpose = function(out, a) {
+-    var a0, a1, a2, a3,
+-        tmp01, tmp23,
+-        out0, out1, out2, out3;
++function Navigation(options) {
++    util.setOptions(this, options);
++}
+ 
+-    a0 = SIMD.Float32x4.load(a, 0);
+-    a1 = SIMD.Float32x4.load(a, 4);
+-    a2 = SIMD.Float32x4.load(a, 8);
+-    a3 = SIMD.Float32x4.load(a, 12);
++Navigation.prototype = util.inherit(Control, {
++    options: {
++        position: 'top-right'
++    },
+ 
+-    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
+-    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
+-    out0  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
+-    out1  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
+-    SIMD.Float32x4.store(out, 0,  out0);
+-    SIMD.Float32x4.store(out, 4,  out1);
++    onAdd: function(map) {
++        var className = 'mapboxgl-ctrl';
+ 
+-    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
+-    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
+-    out2  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
+-    out3  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
+-    SIMD.Float32x4.store(out, 8,  out2);
+-    SIMD.Float32x4.store(out, 12, out3);
++        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
++        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
+ 
+-    return out;
+-};
++        this._zoomInButton = this._createButton(className + '-icon ' + className + '-zoom-in', map.zoomIn.bind(map));
++        this._zoomOutButton = this._createButton(className + '-icon ' + className + '-zoom-out', map.zoomOut.bind(map));
++        this._compass = this._createButton(className + '-icon ' + className + '-compass', map.resetNorth.bind(map));
+ 
+-/**
+- * Transpse a mat4 using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-mat4.transpose = glMatrix.USE_SIMD ? mat4.SIMD.transpose : mat4.scalar.transpose;
++        this._compassArrow = DOM.create('div', 'arrow', this._compass);
+ 
+-/**
+- * Inverts a mat4 not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-mat4.scalar.invert = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++        this._compass.addEventListener('mousedown', this._onCompassDown.bind(this));
++        this._onCompassMove = this._onCompassMove.bind(this);
++        this._onCompassUp = this._onCompassUp.bind(this);
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32,
++        map.on('rotate', this._rotateCompassArrow.bind(this));
++        this._rotateCompassArrow();
+ 
+-        // Calculate the determinant
+-        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++        this._el = map.getCanvasContainer();
+ 
+-    if (!det) {
+-        return null;
++        return container;
++    },
++
++    _onContextMenu: function(e) {
++        e.preventDefault();
++    },
++
++    _onCompassDown: function(e) {
++        if (e.button !== 0) return;
++
++        DOM.disableDrag();
++        document.addEventListener('mousemove', this._onCompassMove);
++        document.addEventListener('mouseup', this._onCompassUp);
++
++        this._el.dispatchEvent(copyMouseEvent(e));
++        e.stopPropagation();
++    },
++
++    _onCompassMove: function(e) {
++        if (e.button !== 0) return;
++
++        this._el.dispatchEvent(copyMouseEvent(e));
++        e.stopPropagation();
++    },
++
++    _onCompassUp: function(e) {
++        if (e.button !== 0) return;
++
++        document.removeEventListener('mousemove', this._onCompassMove);
++        document.removeEventListener('mouseup', this._onCompassUp);
++        DOM.enableDrag();
++
++        this._el.dispatchEvent(copyMouseEvent(e));
++        e.stopPropagation();
++    },
++
++    _createButton: function(className, fn) {
++        var a = DOM.create('button', className, this._container);
++        a.addEventListener('click', function() { fn(); });
++        return a;
++    },
++
++    _rotateCompassArrow: function() {
++        var rotate = 'rotate(' + (this._map.transform.angle * (180 / Math.PI)) + 'deg)';
++        this._compassArrow.style.transform = rotate;
+     }
+-    det = 1.0 / det;
++});
+ 
+-    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+-    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+-    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+-    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
+-    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+-    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+-    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+-    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
+-    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+-    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+-    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+-    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
+-    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
+-    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
+-    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
+-    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
+ 
+-    return out;
+-};
++function copyMouseEvent(e) {
++    return new MouseEvent(e.type, {
++        button: 2,    // right click
++        buttons: 2,   // right click
++        bubbles: true,
++        cancelable: true,
++        detail: e.detail,
++        view: e.view,
++        screenX: e.screenX,
++        screenY: e.screenY,
++        clientX: e.clientX,
++        clientY: e.clientY,
++        movementX: e.movementX,
++        movementY: e.movementY,
++        ctrlKey: e.ctrlKey,
++        shiftKey: e.shiftKey,
++        altKey: e.altKey,
++        metaKey: e.metaKey
++    });
++}
++
++
++},{"../../util/dom":158,"../../util/util":169,"./control":139}],142:[function(require,module,exports){
++'use strict';
++
++var DOM = require('../../util/dom'),
++    LngLatBounds = require('../../geo/lng_lat_bounds'),
++    util = require('../../util/util');
++
++module.exports = BoxZoomHandler;
+ 
+ /**
+- * Inverts a mat4 using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * The `BoxZoomHandler` allows a user to zoom the map to fit a bounding box.
++ * The bounding box is defined by holding `shift` while dragging the cursor.
++ * @class BoxZoomHandler
+  */
+-mat4.SIMD.invert = function(out, a) {
+-  var row0, row1, row2, row3,
+-      tmp1,
+-      minor0, minor1, minor2, minor3,
+-      det,
+-      a0 = SIMD.Float32x4.load(a, 0),
+-      a1 = SIMD.Float32x4.load(a, 4),
+-      a2 = SIMD.Float32x4.load(a, 8),
+-      a3 = SIMD.Float32x4.load(a, 12);
++function BoxZoomHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
++    this._container = map.getContainer();
+ 
+-  // Compute matrix adjugate
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
+-  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
+-  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
+-  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
+-  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
+-  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
+-  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
++    util.bindHandlers(this);
++}
+ 
+-  tmp1   = SIMD.Float32x4.mul(row2, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.mul(row1, tmp1);
+-  minor1 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
+-  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
+-  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
++BoxZoomHandler.prototype = {
+ 
+-  tmp1   = SIMD.Float32x4.mul(row1, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
+-  minor3 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
+-  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
++    _enabled: false,
++    _active: false,
+ 
+-  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
+-  minor2 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
+-  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
++    /**
++     * Returns the current enabled/disabled state of the "box zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
++    /**
++     * Returns true if the "box zoom" interaction is currently active, i.e. currently being used.
++     * @returns {boolean} active state
++     */
++    isActive: function () {
++        return this._active;
++    },
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
+-  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
++    /**
++     * Enable the "box zoom" interaction.
++     * @example
++     *   map.boxZoom.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('mousedown', this._onMouseDown, false);
++        this._enabled = true;
++    },
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
++    /**
++     * Disable the "box zoom" interaction.
++     * @example
++     *   map.boxZoom.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('mousedown', this._onMouseDown);
++        this._enabled = false;
++    },
+ 
+-  // Compute matrix determinant
+-  det   = SIMD.Float32x4.mul(row0, minor0);
+-  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 2, 3, 0, 1), det);
+-  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 1, 0, 3, 2), det);
+-  tmp1  = SIMD.Float32x4.reciprocalApproximation(det);
+-  det   = SIMD.Float32x4.sub(
+-               SIMD.Float32x4.add(tmp1, tmp1),
+-               SIMD.Float32x4.mul(det, SIMD.Float32x4.mul(tmp1, tmp1)));
+-  det   = SIMD.Float32x4.swizzle(det, 0, 0, 0, 0);
+-  if (!det) {
+-      return null;
+-  }
++    _onMouseDown: function (e) {
++        if (!(e.shiftKey && e.button === 0)) return;
++
++        document.addEventListener('mousemove', this._onMouseMove, false);
++        document.addEventListener('keydown', this._onKeyDown, false);
++        document.addEventListener('mouseup', this._onMouseUp, false);
++
++        DOM.disableDrag();
++        this._startPos = DOM.mousePos(this._el, e);
++        this._active = true;
++    },
++
++    _onMouseMove: function (e) {
++        var p0 = this._startPos,
++            p1 = DOM.mousePos(this._el, e);
++
++        if (!this._box) {
++            this._box = DOM.create('div', 'mapboxgl-boxzoom', this._container);
++            this._container.classList.add('mapboxgl-crosshair');
++            this._fireEvent('boxzoomstart', e);
++        }
++
++        var minX = Math.min(p0.x, p1.x),
++            maxX = Math.max(p0.x, p1.x),
++            minY = Math.min(p0.y, p1.y),
++            maxY = Math.max(p0.y, p1.y);
++
++        DOM.setTransform(this._box, 'translate(' + minX + 'px,' + minY + 'px)');
++
++        this._box.style.width = (maxX - minX) + 'px';
++        this._box.style.height = (maxY - minY) + 'px';
++    },
++
++    _onMouseUp: function (e) {
++        if (e.button !== 0) return;
++
++        var p0 = this._startPos,
++            p1 = DOM.mousePos(this._el, e),
++            bounds = new LngLatBounds(this._map.unproject(p0), this._map.unproject(p1));
++
++        this._finish();
++
++        if (p0.x === p1.x && p0.y === p1.y) {
++            this._fireEvent('boxzoomcancel', e);
++        } else {
++            this._map
++                .fitBounds(bounds, {linear: true})
++                .fire('boxzoomend', { originalEvent: e, boxZoomBounds: bounds });
++        }
++    },
++
++    _onKeyDown: function (e) {
++        if (e.keyCode === 27) {
++            this._finish();
++            this._fireEvent('boxzoomcancel', e);
++        }
++    },
++
++    _finish: function () {
++        this._active = false;
++
++        document.removeEventListener('mousemove', this._onMouseMove, false);
++        document.removeEventListener('keydown', this._onKeyDown, false);
++        document.removeEventListener('mouseup', this._onMouseUp, false);
++
++        this._container.classList.remove('mapboxgl-crosshair');
++
++        if (this._box) {
++            this._box.parentNode.removeChild(this._box);
++            this._box = null;
++        }
++
++        DOM.enableDrag();
++    },
++
++    _fireEvent: function (type, e) {
++        return this._map.fire(type, { originalEvent: e });
++    }
++};
+ 
+-  // Compute matrix inverse
+-  SIMD.Float32x4.store(out, 0,  SIMD.Float32x4.mul(det, minor0));
+-  SIMD.Float32x4.store(out, 4,  SIMD.Float32x4.mul(det, minor1));
+-  SIMD.Float32x4.store(out, 8,  SIMD.Float32x4.mul(det, minor2));
+-  SIMD.Float32x4.store(out, 12, SIMD.Float32x4.mul(det, minor3));
+-  return out;
+-}
+ 
+ /**
+- * Inverts a mat4 using SIMD if available and enabled
++ * Boxzoom start event. This event is emitted at the start of a box zoom interaction.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event boxzoomstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat4.invert = glMatrix.USE_SIMD ? mat4.SIMD.invert : mat4.scalar.invert;
+ 
+ /**
+- * Calculates the adjugate of a mat4 not using SIMD
++ * Boxzoom end event. This event is emitted at the end of a box zoom interaction
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event boxzoomend
++ * @memberof Map
++ * @instance
++ * @type {Object}
++ * @property {Event} originalEvent the original DOM event
++ * @property {LngLatBounds} boxZoomBounds the bounds of the box zoom target
+  */
+-mat4.scalar.adjoint = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+-
+-    out[0]  =  (a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22));
+-    out[1]  = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));
+-    out[2]  =  (a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12));
+-    out[3]  = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));
+-    out[4]  = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));
+-    out[5]  =  (a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22));
+-    out[6]  = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));
+-    out[7]  =  (a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12));
+-    out[8]  =  (a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21));
+-    out[9]  = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));
+-    out[10] =  (a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11));
+-    out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));
+-    out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));
+-    out[13] =  (a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21));
+-    out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));
+-    out[15] =  (a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11));
+-    return out;
+-};
+ 
+ /**
+- * Calculates the adjugate of a mat4 using SIMD
++ * Boxzoom cancel event.  This event is emitted when the user cancels a box zoom interaction,
++ *   or when the box zoom does not meet the minimum size threshold.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event boxzoomcancel
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat4.SIMD.adjoint = function(out, a) {
+-  var a0, a1, a2, a3;
+-  var row0, row1, row2, row3;
+-  var tmp1;
+-  var minor0, minor1, minor2, minor3;
+-
+-  var a0 = SIMD.Float32x4.load(a, 0);
+-  var a1 = SIMD.Float32x4.load(a, 4);
+-  var a2 = SIMD.Float32x4.load(a, 8);
+-  var a3 = SIMD.Float32x4.load(a, 12);
+ 
+-  // Transpose the source matrix.  Sort of.  Not a true transpose operation
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
+-  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
+-  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
+-  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
++},{"../../geo/lng_lat_bounds":77,"../../util/dom":158,"../../util/util":169}],143:[function(require,module,exports){
++'use strict';
+ 
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
+-  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
+-  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
+-  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
++module.exports = DoubleClickZoomHandler;
+ 
+-  tmp1   = SIMD.Float32x4.mul(row2, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.mul(row1, tmp1);
+-  minor1 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
+-  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
+-  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
++/**
++ * The `DoubleClickZoomHandler` allows a user to zoom the map around point by
++ * double clicking.
++ * @class DoubleClickZoomHandler
++ */
++function DoubleClickZoomHandler(map) {
++    this._map = map;
++    this._onDblClick = this._onDblClick.bind(this);
++}
+ 
+-  tmp1   = SIMD.Float32x4.mul(row1, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
+-  minor3 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
+-  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
++DoubleClickZoomHandler.prototype = {
+ 
+-  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
+-  minor2 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
+-  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
++    _enabled: false,
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
++    /**
++     * Returns the current enabled/disabled state of the "double click to zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
+-  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
++    /**
++     * Enable the "double click to zoom" interaction.
++     * @example
++     * map.doubleClickZoom.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._map.on('dblclick', this._onDblClick);
++        this._enabled = true;
++    },
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
++    /**
++     * Disable the "double click to zoom" interaction.
++     * @example
++     * map.doubleClickZoom.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._map.off('dblclick', this._onDblClick);
++        this._enabled = false;
++    },
+ 
+-  SIMD.Float32x4.store(out, 0,  minor0);
+-  SIMD.Float32x4.store(out, 4,  minor1);
+-  SIMD.Float32x4.store(out, 8,  minor2);
+-  SIMD.Float32x4.store(out, 12, minor3);
+-  return out;
++    _onDblClick: function (e) {
++        this._map.zoomTo(this._map.getZoom() +
++            (e.originalEvent.shiftKey ? -1 : 1), {around: e.lngLat});
++    }
+ };
+ 
+-/**
+- * Calculates the adjugate of a mat4 using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+- mat4.adjoint = glMatrix.USE_SIMD ? mat4.SIMD.adjoint : mat4.scalar.adjoint;
++},{}],144:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Calculates the determinant of a mat4
+- *
+- * @param {mat4} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-mat4.determinant = function (a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++var DOM = require('../../util/dom'),
++    util = require('../../util/util');
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32;
++module.exports = DragPanHandler;
++
++var inertiaLinearity = 0.3,
++    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
++    inertiaMaxSpeed = 1400, // px/s
++    inertiaDeceleration = 2500; // px/s^2
+ 
+-    // Calculate the determinant
+-    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+-};
+ 
+ /**
+- * Multiplies two mat4's explicitly using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand, must be a Float32Array
+- * @param {mat4} b the second operand, must be a Float32Array
+- * @returns {mat4} out
++ * The `DragPanHandler` allows a user to pan the map by clicking and dragging
++ * the cursor.
++ * @class DragPanHandler
+  */
+-mat4.SIMD.multiply = function (out, a, b) {
+-    var a0 = SIMD.Float32x4.load(a, 0);
+-    var a1 = SIMD.Float32x4.load(a, 4);
+-    var a2 = SIMD.Float32x4.load(a, 8);
+-    var a3 = SIMD.Float32x4.load(a, 12);
++function DragPanHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-    var b0 = SIMD.Float32x4.load(b, 0);
+-    var out0 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 1, 1, 1, 1), a1),
+-                       SIMD.Float32x4.add(
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 2, 2, 2, 2), a2),
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 0, out0);
++    util.bindHandlers(this);
++}
+ 
+-    var b1 = SIMD.Float32x4.load(b, 4);
+-    var out1 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 1, 1, 1, 1), a1),
+-                       SIMD.Float32x4.add(
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 2, 2, 2, 2), a2),
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 4, out1);
++DragPanHandler.prototype = {
+ 
+-    var b2 = SIMD.Float32x4.load(b, 8);
+-    var out2 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 1, 1, 1, 1), a1),
+-                       SIMD.Float32x4.add(
+-                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 2, 2, 2, 2), a2),
+-                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 8, out2);
++    _enabled: false,
++    _active: false,
+ 
+-    var b3 = SIMD.Float32x4.load(b, 12);
+-    var out3 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                        SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 1, 1, 1, 1), a1),
+-                        SIMD.Float32x4.add(
+-                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 2, 2, 2, 2), a2),
+-                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 12, out3);
++    /**
++     * Returns the current enabled/disabled state of the "drag to pan" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-    return out;
+-};
++    /**
++     * Returns true if the "drag to pan" interaction is currently active, i.e. currently being used.
++     * @returns {boolean} active state
++     */
++    isActive: function () {
++        return this._active;
++    },
+ 
+-/**
+- * Multiplies two mat4's explicitly not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.scalar.multiply = function (out, a, b) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
++    /**
++     * Enable the "drag to pan" interaction.
++     * @example
++     * map.dragPan.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('mousedown', this._onDown);
++        this._el.addEventListener('touchstart', this._onDown);
++        this._enabled = true;
++    },
+ 
+-    // Cache only the current line of the second matrix
+-    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    /**
++     * Disable the "drag to pan" interaction.
++     * @example
++     * map.dragPan.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('mousedown', this._onDown);
++        this._el.removeEventListener('touchstart', this._onDown);
++        this._enabled = false;
++    },
+ 
+-    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
+-    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    _onDown: function (e) {
++        if (this._ignoreEvent(e)) return;
++        if (this.isActive()) return;
+ 
+-    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
+-    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++        if (e.touches) {
++            document.addEventListener('touchmove', this._onMove);
++            document.addEventListener('touchend', this._onTouchEnd);
++        } else {
++            document.addEventListener('mousemove', this._onMove);
++            document.addEventListener('mouseup', this._onMouseUp);
++        }
+ 
+-    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
+-    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+-    return out;
+-};
++        this._active = false;
++        this._startPos = this._pos = DOM.mousePos(this._el, e);
++        this._inertia = [[Date.now(), this._pos]];
++    },
+ 
+-/**
+- * Multiplies two mat4's using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.multiply = glMatrix.USE_SIMD ? mat4.SIMD.multiply : mat4.scalar.multiply;
++    _onMove: function (e) {
++        if (this._ignoreEvent(e)) return;
+ 
+-/**
+- * Alias for {@link mat4.multiply}
+- * @function
+- */
+-mat4.mul = mat4.multiply;
++        if (!this.isActive()) {
++            this._active = true;
++            this._fireEvent('dragstart', e);
++            this._fireEvent('movestart', e);
++        }
+ 
+-/**
+- * Translate a mat4 by the given vector not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
+- */
+-mat4.scalar.translate = function (out, a, v) {
+-    var x = v[0], y = v[1], z = v[2],
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23;
++        var pos = DOM.mousePos(this._el, e),
++            map = this._map;
+ 
+-    if (a === out) {
+-        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
+-        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
+-        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
+-        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
+-    } else {
+-        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++        map.stop();
++        this._drainInertiaBuffer();
++        this._inertia.push([Date.now(), pos]);
+ 
+-        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
+-        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
+-        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
++        map.transform.setLocationAtPoint(map.transform.pointLocation(this._pos), pos);
+ 
+-        out[12] = a00 * x + a10 * y + a20 * z + a[12];
+-        out[13] = a01 * x + a11 * y + a21 * z + a[13];
+-        out[14] = a02 * x + a12 * y + a22 * z + a[14];
+-        out[15] = a03 * x + a13 * y + a23 * z + a[15];
+-    }
++        this._fireEvent('drag', e);
++        this._fireEvent('move', e);
+ 
+-    return out;
+-};
++        this._pos = pos;
+ 
+-/**
+- * Translates a mat4 by the given vector using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.translate = function (out, a, v) {
+-    var a0 = SIMD.Float32x4.load(a, 0),
+-        a1 = SIMD.Float32x4.load(a, 4),
+-        a2 = SIMD.Float32x4.load(a, 8),
+-        a3 = SIMD.Float32x4.load(a, 12),
+-        vec = SIMD.Float32x4(v[0], v[1], v[2] , 0);
++        e.preventDefault();
++    },
+ 
+-    if (a !== out) {
+-        out[0] = a[0]; out[1] = a[1]; out[2] = a[2]; out[3] = a[3];
+-        out[4] = a[4]; out[5] = a[5]; out[6] = a[6]; out[7] = a[7];
+-        out[8] = a[8]; out[9] = a[9]; out[10] = a[10]; out[11] = a[11];
+-    }
++    _onUp: function (e) {
++        if (!this.isActive()) return;
++
++        this._active = false;
++        this._fireEvent('dragend', e);
++        this._drainInertiaBuffer();
++
++        var finish = function() {
++            this._fireEvent('moveend', e);
++        }.bind(this);
++
++        var inertia = this._inertia;
++        if (inertia.length < 2) {
++            finish();
++            return;
++        }
++
++        var last = inertia[inertia.length - 1],
++            first = inertia[0],
++            flingOffset = last[1].sub(first[1]),
++            flingDuration = (last[0] - first[0]) / 1000;
++
++        if (flingDuration === 0 || last[1].equals(first[1])) {
++            finish();
++            return;
++        }
++
++        // calculate px/s velocity & adjust for increased initial animation speed when easing out
++        var velocity = flingOffset.mult(inertiaLinearity / flingDuration),
++            speed = velocity.mag(); // px/s
++
++        if (speed > inertiaMaxSpeed) {
++            speed = inertiaMaxSpeed;
++            velocity._unit()._mult(speed);
++        }
++
++        var duration = speed / (inertiaDeceleration * inertiaLinearity),
++            offset = velocity.mult(-duration / 2);
++
++        this._map.panBy(offset, {
++            duration: duration * 1000,
++            easing: inertiaEasing,
++            noMoveStart: true
++        }, { originalEvent: e });
++    },
++
++    _onMouseUp: function (e) {
++        if (this._ignoreEvent(e)) return;
++        this._onUp(e);
++        document.removeEventListener('mousemove', this._onMove);
++        document.removeEventListener('mouseup', this._onMouseUp);
++    },
++
++    _onTouchEnd: function (e) {
++        if (this._ignoreEvent(e)) return;
++        this._onUp(e);
++        document.removeEventListener('touchmove', this._onMove);
++        document.removeEventListener('touchend', this._onTouchEnd);
++    },
++
++    _fireEvent: function (type, e) {
++        return this._map.fire(type, { originalEvent: e });
++    },
+ 
+-    a0 = SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0));
+-    a1 = SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1));
+-    a2 = SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2));
++    _ignoreEvent: function (e) {
++        var map = this._map;
+ 
+-    var t0 = SIMD.Float32x4.add(a0, SIMD.Float32x4.add(a1, SIMD.Float32x4.add(a2, a3)));
+-    SIMD.Float32x4.store(out, 12, t0);
++        if (map.boxZoom && map.boxZoom.isActive()) return true;
++        if (map.dragRotate && map.dragRotate.isActive()) return true;
++        if (e.touches) {
++            return (e.touches.length > 1);
++        } else {
++            if (e.ctrlKey) return true;
++            var buttons = 1,  // left button
++                button = 0;   // left button
++            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
++        }
++    },
+ 
+-    return out;
++    _drainInertiaBuffer: function () {
++        var inertia = this._inertia,
++            now = Date.now(),
++            cutoff = 160;   // msec
++
++        while (inertia.length > 0 && now - inertia[0][0] > cutoff) inertia.shift();
++    }
+ };
+ 
++
+ /**
+- * Translates a mat4 by the given vector using SIMD if available and enabled
++ * Drag start event. This event is emitted at the start of a user-initiated pan interaction.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
++ * @event dragstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat4.translate = glMatrix.USE_SIMD ? mat4.SIMD.translate : mat4.scalar.translate;
+ 
+ /**
+- * Scales the mat4 by the dimensions in the given vec3 not using vectorization
++ * Drag event. This event is emitted repeatedly during a user-initiated pan interaction.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- **/
+-mat4.scalar.scale = function(out, a, v) {
+-    var x = v[0], y = v[1], z = v[2];
+-
+-    out[0] = a[0] * x;
+-    out[1] = a[1] * x;
+-    out[2] = a[2] * x;
+-    out[3] = a[3] * x;
+-    out[4] = a[4] * y;
+-    out[5] = a[5] * y;
+-    out[6] = a[6] * y;
+-    out[7] = a[7] * y;
+-    out[8] = a[8] * z;
+-    out[9] = a[9] * z;
+-    out[10] = a[10] * z;
+-    out[11] = a[11] * z;
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++ * @event drag
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
++ */
+ 
+ /**
+- * Scales the mat4 by the dimensions in the given vec3 using vectorization
++ * Drag end event. This event is emitted at the end of a user-initiated pan interaction.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- **/
+-mat4.SIMD.scale = function(out, a, v) {
+-    var a0, a1, a2;
+-    var vec = SIMD.Float32x4(v[0], v[1], v[2], 0);
++ * @event dragend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
++ */
+ 
+-    a0 = SIMD.Float32x4.load(a, 0);
+-    SIMD.Float32x4.store(
+-        out, 0, SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0)));
++},{"../../util/dom":158,"../../util/util":169}],145:[function(require,module,exports){
++'use strict';
+ 
+-    a1 = SIMD.Float32x4.load(a, 4);
+-    SIMD.Float32x4.store(
+-        out, 4, SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1)));
++var DOM = require('../../util/dom'),
++    Point = require('point-geometry'),
++    util = require('../../util/util');
+ 
+-    a2 = SIMD.Float32x4.load(a, 8);
+-    SIMD.Float32x4.store(
+-        out, 8, SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2)));
++module.exports = DragRotateHandler;
+ 
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++var inertiaLinearity = 0.25,
++    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
++    inertiaMaxSpeed = 180, // deg/s
++    inertiaDeceleration = 720; // deg/s^2
+ 
+-/**
+- * Scales the mat4 by the dimensions in the given vec3 using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scale = glMatrix.USE_SIMD ? mat4.SIMD.scale : mat4.scalar.scale;
+ 
+ /**
+- * Rotates a mat4 by the given angle around the given axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @param {vec3} axis the axis to rotate around
+- * @returns {mat4} out
++ * The `DragRotateHandler` allows a user to rotate the map by clicking and
++ * dragging the cursor while holding the right mouse button or the `ctrl` key.
++ * @class DragRotateHandler
+  */
+-mat4.rotate = function (out, a, rad, axis) {
+-    var x = axis[0], y = axis[1], z = axis[2],
+-        len = Math.sqrt(x * x + y * y + z * z),
+-        s, c, t,
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23,
+-        b00, b01, b02,
+-        b10, b11, b12,
+-        b20, b21, b22;
++function DragRotateHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
++    util.bindHandlers(this);
++}
+ 
+-    len = 1 / len;
+-    x *= len;
+-    y *= len;
+-    z *= len;
++DragRotateHandler.prototype = {
+ 
+-    s = Math.sin(rad);
+-    c = Math.cos(rad);
+-    t = 1 - c;
++    _enabled: false,
++    _active: false,
+ 
+-    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++    /**
++     * Returns the current enabled/disabled state of the "drag to rotate" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-    // Construct the elements of the rotation matrix
+-    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
+-    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
+-    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
++    /**
++     * Returns true if the "drag to rotate" interaction is currently active, i.e. currently being used.
++     * @returns {boolean} active state
++     */
++    isActive: function () {
++        return this._active;
++    },
+ 
+-    // Perform rotation-specific matrix multiplication
+-    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
+-    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
+-    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
+-    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
+-    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
+-    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
+-    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
+-    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
+-    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
+-    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
+-    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
+-    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
++    /**
++     * Enable the "drag to rotate" interaction.
++     * @example
++     * map.dragRotate.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('mousedown', this._onDown);
++        this._enabled = true;
++    },
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
+-    return out;
+-};
++    /**
++     * Disable the "drag to rotate" interaction.
++     * @example
++     * map.dragRotate.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('mousedown', this._onDown);
++        this._enabled = false;
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scalar.rotateX = function (out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++    _onDown: function (e) {
++        if (this._ignoreEvent(e)) return;
++        if (this.isActive()) return;
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[0]  = a[0];
+-        out[1]  = a[1];
+-        out[2]  = a[2];
+-        out[3]  = a[3];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++        document.addEventListener('mousemove', this._onMove);
++        document.addEventListener('mouseup', this._onUp);
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[4] = a10 * c + a20 * s;
+-    out[5] = a11 * c + a21 * s;
+-    out[6] = a12 * c + a22 * s;
+-    out[7] = a13 * c + a23 * s;
+-    out[8] = a20 * c - a10 * s;
+-    out[9] = a21 * c - a11 * s;
+-    out[10] = a22 * c - a12 * s;
+-    out[11] = a23 * c - a13 * s;
+-    return out;
+-};
++        this._active = false;
++        this._inertia = [[Date.now(), this._map.getBearing()]];
++        this._startPos = this._pos = DOM.mousePos(this._el, e);
++        this._center = this._map.transform.centerPoint;  // Center of rotation
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.rotateX = function (out, a, rad) {
+-    var s = SIMD.Float32x4.splat(Math.sin(rad)),
+-        c = SIMD.Float32x4.splat(Math.cos(rad));
++        // If the first click was too close to the center, move the center of rotation by 200 pixels
++        // in the direction of the click.
++        var startToCenter = this._startPos.sub(this._center),
++            startToCenterDist = startToCenter.mag();
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-      out[0]  = a[0];
+-      out[1]  = a[1];
+-      out[2]  = a[2];
+-      out[3]  = a[3];
+-      out[12] = a[12];
+-      out[13] = a[13];
+-      out[14] = a[14];
+-      out[15] = a[15];
+-    }
++        if (startToCenterDist < 200) {
++            this._center = this._startPos.add(new Point(-200, 0)._rotate(startToCenter.angle()));
++        }
+ 
+-    // Perform axis-specific matrix multiplication
+-    var a_1 = SIMD.Float32x4.load(a, 4);
+-    var a_2 = SIMD.Float32x4.load(a, 8);
+-    SIMD.Float32x4.store(out, 4,
+-                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_2, s)));
+-    SIMD.Float32x4.store(out, 8,
+-                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_2, c), SIMD.Float32x4.mul(a_1, s)));
+-    return out;
+-};
++        e.preventDefault();
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis using SIMD if availabe and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.rotateX = glMatrix.USE_SIMD ? mat4.SIMD.rotateX : mat4.scalar.rotateX;
++    _onMove: function (e) {
++        if (this._ignoreEvent(e)) return;
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scalar.rotateY = function (out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++        if (!this.isActive()) {
++            this._active = true;
++            this._fireEvent('rotatestart', e);
++            this._fireEvent('movestart', e);
++        }
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[4]  = a[4];
+-        out[5]  = a[5];
+-        out[6]  = a[6];
+-        out[7]  = a[7];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++        var map = this._map;
++        map.stop();
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c - a20 * s;
+-    out[1] = a01 * c - a21 * s;
+-    out[2] = a02 * c - a22 * s;
+-    out[3] = a03 * c - a23 * s;
+-    out[8] = a00 * s + a20 * c;
+-    out[9] = a01 * s + a21 * c;
+-    out[10] = a02 * s + a22 * c;
+-    out[11] = a03 * s + a23 * c;
+-    return out;
+-};
++        var p1 = this._pos,
++            p2 = DOM.mousePos(this._el, e),
++            center = this._center,
++            bearingDiff = p1.sub(center).angleWith(p2.sub(center)) / Math.PI * 180,
++            bearing = map.getBearing() - bearingDiff,
++            inertia = this._inertia,
++            last = inertia[inertia.length - 1];
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.rotateY = function (out, a, rad) {
+-    var s = SIMD.Float32x4.splat(Math.sin(rad)),
+-        c = SIMD.Float32x4.splat(Math.cos(rad));
++        this._drainInertiaBuffer();
++        inertia.push([Date.now(), map._normalizeBearing(bearing, last[1])]);
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[4]  = a[4];
+-        out[5]  = a[5];
+-        out[6]  = a[6];
+-        out[7]  = a[7];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++        map.transform.bearing = bearing;
+ 
+-    // Perform axis-specific matrix multiplication
+-    var a_0 = SIMD.Float32x4.load(a, 0);
+-    var a_2 = SIMD.Float32x4.load(a, 8);
+-    SIMD.Float32x4.store(out, 0,
+-                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_2, s)));
+-    SIMD.Float32x4.store(out, 8,
+-                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, s), SIMD.Float32x4.mul(a_2, c)));
+-    return out;
+-};
++        this._fireEvent('rotate', e);
++        this._fireEvent('move', e);
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis if SIMD available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+- mat4.rotateY = glMatrix.USE_SIMD ? mat4.SIMD.rotateY : mat4.scalar.rotateY;
++        this._pos = p2;
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scalar.rotateZ = function (out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7];
++    _onUp: function (e) {
++        if (this._ignoreEvent(e)) return;
++        document.removeEventListener('mousemove', this._onMove);
++        document.removeEventListener('mouseup', this._onUp);
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[8]  = a[8];
+-        out[9]  = a[9];
+-        out[10] = a[10];
+-        out[11] = a[11];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++        if (!this.isActive()) return;
++
++        this._active = false;
++        this._fireEvent('rotateend', e);
++        this._drainInertiaBuffer();
++
++        var map = this._map,
++            mapBearing = map.getBearing(),
++            inertia = this._inertia;
++
++        var finish = function() {
++            if (Math.abs(mapBearing) < map.options.bearingSnap) {
++                map.resetNorth({noMoveStart: true}, { originalEvent: e });
++            } else {
++                this._fireEvent('moveend', e);
++            }
++        }.bind(this);
++
++        if (inertia.length < 2) {
++            finish();
++            return;
++        }
++
++        var first = inertia[0],
++            last = inertia[inertia.length - 1],
++            previous = inertia[inertia.length - 2],
++            bearing = map._normalizeBearing(mapBearing, previous[1]),
++            flingDiff = last[1] - first[1],
++            sign = flingDiff < 0 ? -1 : 1,
++            flingDuration = (last[0] - first[0]) / 1000;
++
++        if (flingDiff === 0 || flingDuration === 0) {
++            finish();
++            return;
++        }
++
++        var speed = Math.abs(flingDiff * (inertiaLinearity / flingDuration));  // deg/s
++        if (speed > inertiaMaxSpeed) {
++            speed = inertiaMaxSpeed;
++        }
++
++        var duration = speed / (inertiaDeceleration * inertiaLinearity),
++            offset = sign * speed * (duration / 2);
++
++        bearing += offset;
++
++        if (Math.abs(map._normalizeBearing(bearing, 0)) < map.options.bearingSnap) {
++            bearing = map._normalizeBearing(0, bearing);
++        }
++
++        map.rotateTo(bearing, {
++            duration: duration * 1000,
++            easing: inertiaEasing,
++            noMoveStart: true
++        }, { originalEvent: e });
++    },
++
++    _fireEvent: function (type, e) {
++        return this._map.fire(type, { originalEvent: e });
++    },
++
++    _ignoreEvent: function (e) {
++        var map = this._map;
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c + a10 * s;
+-    out[1] = a01 * c + a11 * s;
+-    out[2] = a02 * c + a12 * s;
+-    out[3] = a03 * c + a13 * s;
+-    out[4] = a10 * c - a00 * s;
+-    out[5] = a11 * c - a01 * s;
+-    out[6] = a12 * c - a02 * s;
+-    out[7] = a13 * c - a03 * s;
+-    return out;
+-};
++        if (map.boxZoom && map.boxZoom.isActive()) return true;
++        if (map.dragPan && map.dragPan.isActive()) return true;
++        if (e.touches) {
++            return (e.touches.length > 1);
++        } else {
++            var buttons = (e.ctrlKey ? 1 : 2),  // ? ctrl+left button : right button
++                button = (e.ctrlKey ? 0 : 2);   // ? ctrl+left button : right button
++            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
++        }
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.rotateZ = function (out, a, rad) {
+-    var s = SIMD.Float32x4.splat(Math.sin(rad)),
+-        c = SIMD.Float32x4.splat(Math.cos(rad));
++    _drainInertiaBuffer: function () {
++        var inertia = this._inertia,
++            now = Date.now(),
++            cutoff = 160;   //msec
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[8]  = a[8];
+-        out[9]  = a[9];
+-        out[10] = a[10];
+-        out[11] = a[11];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
++        while (inertia.length > 0 && now - inertia[0][0] > cutoff)
++            inertia.shift();
+     }
+ 
+-    // Perform axis-specific matrix multiplication
+-    var a_0 = SIMD.Float32x4.load(a, 0);
+-    var a_1 = SIMD.Float32x4.load(a, 4);
+-    SIMD.Float32x4.store(out, 0,
+-                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_1, s)));
+-    SIMD.Float32x4.store(out, 4,
+-                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_0, s)));
+-    return out;
+ };
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis if SIMD available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+- mat4.rotateZ = glMatrix.USE_SIMD ? mat4.SIMD.rotateZ : mat4.scalar.rotateZ;
+ 
+ /**
+- * Creates a matrix from a vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, dest, vec);
++ * Rotate start event. This event is emitted at the start of a user-initiated rotate interaction.
+  *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {vec3} v Translation vector
+- * @returns {mat4} out
++ * @event rotatestart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat4.fromTranslation = function(out, v) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
+-    return out;
+-}
+ 
+ /**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.scale(dest, dest, vec);
++ * Rotate event. This event is emitted repeatedly during a user-initiated rotate interaction.
+  *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {vec3} v Scaling vector
+- * @returns {mat4} out
++ * @event rotate
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat4.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = v[1];
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = v[2];
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
+ 
+ /**
+- * Creates a matrix from a given angle around a given axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotate(dest, dest, rad, axis);
++ * Rotate end event. This event is emitted at the end of a user-initiated rotate interaction.
+  *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @param {vec3} axis the axis to rotate around
+- * @returns {mat4} out
++ * @event rotateend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat4.fromRotation = function(out, rad, axis) {
+-    var x = axis[0], y = axis[1], z = axis[2],
+-        len = Math.sqrt(x * x + y * y + z * z),
+-        s, c, t;
+-
+-    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
+-
+-    len = 1 / len;
+-    x *= len;
+-    y *= len;
+-    z *= len;
+-
+-    s = Math.sin(rad);
+-    c = Math.cos(rad);
+-    t = 1 - c;
+-
+-    // Perform rotation-specific matrix multiplication
+-    out[0] = x * x * t + c;
+-    out[1] = y * x * t + z * s;
+-    out[2] = z * x * t - y * s;
+-    out[3] = 0;
+-    out[4] = x * y * t - z * s;
+-    out[5] = y * y * t + c;
+-    out[6] = z * y * t + x * s;
+-    out[7] = 0;
+-    out[8] = x * z * t + y * s;
+-    out[9] = y * z * t - x * s;
+-    out[10] = z * z * t + c;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
+ 
+-/**
+- * Creates a matrix from the given angle around the X axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotateX(dest, dest, rad);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.fromXRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
++},{"../../util/dom":158,"../../util/util":169,"point-geometry":174}],146:[function(require,module,exports){
++'use strict';
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0]  = 1;
+-    out[1]  = 0;
+-    out[2]  = 0;
+-    out[3]  = 0;
+-    out[4] = 0;
+-    out[5] = c;
+-    out[6] = s;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = -s;
+-    out[10] = c;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++module.exports = KeyboardHandler;
+ 
+-/**
+- * Creates a matrix from the given angle around the Y axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotateY(dest, dest, rad);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.fromYRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0]  = c;
+-    out[1]  = 0;
+-    out[2]  = -s;
+-    out[3]  = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = s;
+-    out[9] = 0;
+-    out[10] = c;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++var panDelta = 80,
++    rotateDelta = 2,
++    pitchDelta = 5;
+ 
+ /**
+- * Creates a matrix from the given angle around the Z axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotateZ(dest, dest, rad);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
++ * The `KeyboardHandler` allows a user to zoom, rotate, and pan the map using
++ * following keyboard shortcuts:
++ *  * `=` / `+`: increase zoom level by 1
++ *  * `Shift-=` / `Shift-+`: increase zoom level by 2
++ *  * `-`: decrease zoom level by 1
++ *  * `Shift--`: decrease zoom level by 2
++ *  * Arrow keys: pan by 80 pixels
++ *  * `Shift+⇢`: increase rotation by 2 degrees
++ *  * `Shift+⇠`: decrease rotation by 2 degrees
++ *  * `Shift+⇡`: increase pitch by 5 degrees
++ *  * `Shift+⇣`: decrease pitch by 5 degrees
++ * @class KeyboardHandler
+  */
+-mat4.fromZRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
++function KeyboardHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0]  = c;
+-    out[1]  = s;
+-    out[2]  = 0;
+-    out[3]  = 0;
+-    out[4] = -s;
+-    out[5] = c;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
++    this._onKeyDown = this._onKeyDown.bind(this);
+ }
+ 
+-/**
+- * Creates a matrix from a quaternion rotation and vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @returns {mat4} out
+- */
+-mat4.fromRotationTranslation = function (out, q, v) {
+-    // Quaternion math
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++KeyboardHandler.prototype = {
+ 
+-        xx = x * x2,
+-        xy = x * y2,
+-        xz = x * z2,
+-        yy = y * y2,
+-        yz = y * z2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++    _enabled: false,
+ 
+-    out[0] = 1 - (yy + zz);
+-    out[1] = xy + wz;
+-    out[2] = xz - wy;
+-    out[3] = 0;
+-    out[4] = xy - wz;
+-    out[5] = 1 - (xx + zz);
+-    out[6] = yz + wx;
+-    out[7] = 0;
+-    out[8] = xz + wy;
+-    out[9] = yz - wx;
+-    out[10] = 1 - (xx + yy);
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
++    /**
++     * Returns the current enabled/disabled state of keyboard interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-    return out;
+-};
++    /**
++     * Enable the ability to interact with the map using keyboard input.
++     * @example
++     * map.keyboard.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('keydown', this._onKeyDown, false);
++        this._enabled = true;
++    },
+ 
+-/**
+- * Returns the translation vector component of a transformation
+- *  matrix. If a matrix is built with fromRotationTranslation,
+- *  the returned vector will be the same as the translation vector
+- *  originally supplied.
+- * @param  {vec3} out Vector to receive translation component
+- * @param  {mat4} mat Matrix to be decomposed (input)
+- * @return {vec3} out
+- */
+-mat4.getTranslation = function (out, mat) {
+-  out[0] = mat[12];
+-  out[1] = mat[13];
+-  out[2] = mat[14];
++    /**
++     * Disable the ability to interact with the map using keyboard input.
++     * @example
++     * map.keyboard.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('keydown', this._onKeyDown);
++        this._enabled = false;
++    },
+ 
+-  return out;
+-};
++    _onKeyDown: function (e) {
++        if (e.altKey || e.ctrlKey || e.metaKey) return;
+ 
+-/**
+- * Returns a quaternion representing the rotational component
+- *  of a transformation matrix. If a matrix is built with
+- *  fromRotationTranslation, the returned quaternion will be the
+- *  same as the quaternion originally supplied.
+- * @param {quat} out Quaternion to receive the rotation component
+- * @param {mat4} mat Matrix to be decomposed (input)
+- * @return {quat} out
+- */
+-mat4.getRotation = function (out, mat) {
+-  // Algorithm taken from http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
+-  var trace = mat[0] + mat[5] + mat[10];
+-  var S = 0;
++        var map = this._map,
++            eventData = { originalEvent: e };
+ 
+-  if (trace > 0) { 
+-    S = Math.sqrt(trace + 1.0) * 2;
+-    out[3] = 0.25 * S;
+-    out[0] = (mat[6] - mat[9]) / S;
+-    out[1] = (mat[8] - mat[2]) / S; 
+-    out[2] = (mat[1] - mat[4]) / S; 
+-  } else if ((mat[0] > mat[5])&(mat[0] > mat[10])) { 
+-    S = Math.sqrt(1.0 + mat[0] - mat[5] - mat[10]) * 2;
+-    out[3] = (mat[6] - mat[9]) / S;
+-    out[0] = 0.25 * S;
+-    out[1] = (mat[1] + mat[4]) / S; 
+-    out[2] = (mat[8] + mat[2]) / S; 
+-  } else if (mat[5] > mat[10]) { 
+-    S = Math.sqrt(1.0 + mat[5] - mat[0] - mat[10]) * 2;
+-    out[3] = (mat[8] - mat[2]) / S;
+-    out[0] = (mat[1] + mat[4]) / S; 
+-    out[1] = 0.25 * S;
+-    out[2] = (mat[6] + mat[9]) / S; 
+-  } else { 
+-    S = Math.sqrt(1.0 + mat[10] - mat[0] - mat[5]) * 2;
+-    out[3] = (mat[1] - mat[4]) / S;
+-    out[0] = (mat[8] + mat[2]) / S;
+-    out[1] = (mat[6] + mat[9]) / S;
+-    out[2] = 0.25 * S;
+-  }
++        switch (e.keyCode) {
++        case 61:
++        case 107:
++        case 171:
++        case 187:
++            map.zoomTo(Math.round(map.getZoom()) + (e.shiftKey ? 2 : 1), eventData);
++            break;
+ 
+-  return out;
+-};
++        case 189:
++        case 109:
++        case 173:
++            map.zoomTo(Math.round(map.getZoom()) - (e.shiftKey ? 2 : 1), eventData);
++            break;
+ 
+-/**
+- * Creates a matrix from a quaternion rotation, vector translation and vector scale
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *     mat4.scale(dest, scale)
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @param {vec3} s Scaling vector
+- * @returns {mat4} out
+- */
+-mat4.fromRotationTranslationScale = function (out, q, v, s) {
+-    // Quaternion math
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++        case 37:
++            if (e.shiftKey) {
++                map.easeTo({ bearing: map.getBearing() - rotateDelta }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([-panDelta, 0], eventData);
++            }
++            break;
+ 
+-        xx = x * x2,
+-        xy = x * y2,
+-        xz = x * z2,
+-        yy = y * y2,
+-        yz = y * z2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2,
+-        sx = s[0],
+-        sy = s[1],
+-        sz = s[2];
++        case 39:
++            if (e.shiftKey) {
++                map.easeTo({ bearing: map.getBearing() + rotateDelta }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([panDelta, 0], eventData);
++            }
++            break;
+ 
+-    out[0] = (1 - (yy + zz)) * sx;
+-    out[1] = (xy + wz) * sx;
+-    out[2] = (xz - wy) * sx;
+-    out[3] = 0;
+-    out[4] = (xy - wz) * sy;
+-    out[5] = (1 - (xx + zz)) * sy;
+-    out[6] = (yz + wx) * sy;
+-    out[7] = 0;
+-    out[8] = (xz + wy) * sz;
+-    out[9] = (yz - wx) * sz;
+-    out[10] = (1 - (xx + yy)) * sz;
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
++        case 38:
++            if (e.shiftKey) {
++                map.easeTo({ pitch: map.getPitch() + pitchDelta }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([0, -panDelta], eventData);
++            }
++            break;
+ 
+-    return out;
++        case 40:
++            if (e.shiftKey) {
++                map.easeTo({ pitch: Math.max(map.getPitch() - pitchDelta, 0) }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([0, panDelta], eventData);
++            }
++            break;
++        }
++    }
+ };
+ 
+-/**
+- * Creates a matrix from a quaternion rotation, vector translation and vector scale, rotating and scaling around the given origin
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     mat4.translate(dest, origin);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *     mat4.scale(dest, scale)
+- *     mat4.translate(dest, negativeOrigin);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @param {vec3} s Scaling vector
+- * @param {vec3} o The origin vector around which to scale and rotate
+- * @returns {mat4} out
+- */
+-mat4.fromRotationTranslationScaleOrigin = function (out, q, v, s, o) {
+-  // Quaternion math
+-  var x = q[0], y = q[1], z = q[2], w = q[3],
+-      x2 = x + x,
+-      y2 = y + y,
+-      z2 = z + z,
++},{}],147:[function(require,module,exports){
++'use strict';
+ 
+-      xx = x * x2,
+-      xy = x * y2,
+-      xz = x * z2,
+-      yy = y * y2,
+-      yz = y * z2,
+-      zz = z * z2,
+-      wx = w * x2,
+-      wy = w * y2,
+-      wz = w * z2,
++var DOM = require('../../util/dom'),
++    browser = require('../../util/browser'),
++    util = require('../../util/util');
+ 
+-      sx = s[0],
+-      sy = s[1],
+-      sz = s[2],
++module.exports = ScrollZoomHandler;
+ 
+-      ox = o[0],
+-      oy = o[1],
+-      oz = o[2];
+ 
+-  out[0] = (1 - (yy + zz)) * sx;
+-  out[1] = (xy + wz) * sx;
+-  out[2] = (xz - wy) * sx;
+-  out[3] = 0;
+-  out[4] = (xy - wz) * sy;
+-  out[5] = (1 - (xx + zz)) * sy;
+-  out[6] = (yz + wx) * sy;
+-  out[7] = 0;
+-  out[8] = (xz + wy) * sz;
+-  out[9] = (yz - wx) * sz;
+-  out[10] = (1 - (xx + yy)) * sz;
+-  out[11] = 0;
+-  out[12] = v[0] + ox - (out[0] * ox + out[4] * oy + out[8] * oz);
+-  out[13] = v[1] + oy - (out[1] * ox + out[5] * oy + out[9] * oz);
+-  out[14] = v[2] + oz - (out[2] * ox + out[6] * oy + out[10] * oz);
+-  out[15] = 1;
++var ua = typeof navigator !== 'undefined' ? navigator.userAgent.toLowerCase() : '',
++    firefox = ua.indexOf('firefox') !== -1,
++    safari = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') === -1;
+ 
+-  return out;
+-};
+ 
+ /**
+- * Calculates a 4x4 matrix from the given quaternion
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat} q Quaternion to create matrix from
+- *
+- * @returns {mat4} out
++ * The `ScrollZoomHandler` allows a user to zoom the map by scrolling.
++ * @class ScrollZoomHandler
+  */
+-mat4.fromQuat = function (out, q) {
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++function ScrollZoomHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-        xx = x * x2,
+-        yx = y * x2,
+-        yy = y * y2,
+-        zx = z * x2,
+-        zy = z * y2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++    util.bindHandlers(this);
++}
+ 
+-    out[0] = 1 - yy - zz;
+-    out[1] = yx + wz;
+-    out[2] = zx - wy;
+-    out[3] = 0;
++ScrollZoomHandler.prototype = {
+ 
+-    out[4] = yx - wz;
+-    out[5] = 1 - xx - zz;
+-    out[6] = zy + wx;
+-    out[7] = 0;
++    _enabled: false,
+ 
+-    out[8] = zx + wy;
+-    out[9] = zy - wx;
+-    out[10] = 1 - xx - yy;
+-    out[11] = 0;
++    /**
++     * Returns the current enabled/disabled state of the "scroll to zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
++    /**
++     * Enable the "scroll to zoom" interaction.
++     * @example
++     *   map.scrollZoom.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('wheel', this._onWheel, false);
++        this._el.addEventListener('mousewheel', this._onWheel, false);
++        this._enabled = true;
++    },
+ 
+-    return out;
+-};
++    /**
++     * Disable the "scroll to zoom" interaction.
++     * @example
++     *   map.scrollZoom.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('wheel', this._onWheel);
++        this._el.removeEventListener('mousewheel', this._onWheel);
++        this._enabled = false;
++    },
+ 
+-/**
+- * Generates a frustum matrix with the given bounds
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {Number} left Left bound of the frustum
+- * @param {Number} right Right bound of the frustum
+- * @param {Number} bottom Bottom bound of the frustum
+- * @param {Number} top Top bound of the frustum
+- * @param {Number} near Near bound of the frustum
+- * @param {Number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-mat4.frustum = function (out, left, right, bottom, top, near, far) {
+-    var rl = 1 / (right - left),
+-        tb = 1 / (top - bottom),
+-        nf = 1 / (near - far);
+-    out[0] = (near * 2) * rl;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = (near * 2) * tb;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = (right + left) * rl;
+-    out[9] = (top + bottom) * tb;
+-    out[10] = (far + near) * nf;
+-    out[11] = -1;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = (far * near * 2) * nf;
+-    out[15] = 0;
+-    return out;
+-};
++    _onWheel: function (e) {
++        var value;
+ 
+-/**
+- * Generates a perspective projection matrix with the given bounds
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {number} fovy Vertical field of view in radians
+- * @param {number} aspect Aspect ratio. typically viewport width/height
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-mat4.perspective = function (out, fovy, aspect, near, far) {
+-    var f = 1.0 / Math.tan(fovy / 2),
+-        nf = 1 / (near - far);
+-    out[0] = f / aspect;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = f;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = (far + near) * nf;
+-    out[11] = -1;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = (2 * far * near) * nf;
+-    out[15] = 0;
+-    return out;
+-};
++        if (e.type === 'wheel') {
++            value = e.deltaY;
++            // Firefox doubles the values on retina screens...
++            if (firefox && e.deltaMode === window.WheelEvent.DOM_DELTA_PIXEL) value /= browser.devicePixelRatio;
++            if (e.deltaMode === window.WheelEvent.DOM_DELTA_LINE) value *= 40;
+ 
+-/**
+- * Generates a perspective projection matrix with the given field of view.
+- * This is primarily useful for generating projection matrices to be used
+- * with the still experiemental WebVR API.
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {Object} fov Object containing the following values: upDegrees, downDegrees, leftDegrees, rightDegrees
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-mat4.perspectiveFromFieldOfView = function (out, fov, near, far) {
+-    var upTan = Math.tan(fov.upDegrees * Math.PI/180.0),
+-        downTan = Math.tan(fov.downDegrees * Math.PI/180.0),
+-        leftTan = Math.tan(fov.leftDegrees * Math.PI/180.0),
+-        rightTan = Math.tan(fov.rightDegrees * Math.PI/180.0),
+-        xScale = 2.0 / (leftTan + rightTan),
+-        yScale = 2.0 / (upTan + downTan);
++        } else if (e.type === 'mousewheel') {
++            value = -e.wheelDeltaY;
++            if (safari) value = value / 3;
++        }
+ 
+-    out[0] = xScale;
+-    out[1] = 0.0;
+-    out[2] = 0.0;
+-    out[3] = 0.0;
+-    out[4] = 0.0;
+-    out[5] = yScale;
+-    out[6] = 0.0;
+-    out[7] = 0.0;
+-    out[8] = -((leftTan - rightTan) * xScale * 0.5);
+-    out[9] = ((upTan - downTan) * yScale * 0.5);
+-    out[10] = far / (near - far);
+-    out[11] = -1.0;
+-    out[12] = 0.0;
+-    out[13] = 0.0;
+-    out[14] = (far * near) / (near - far);
+-    out[15] = 0.0;
+-    return out;
+-}
++        var now = browser.now(),
++            timeDelta = now - (this._time || 0);
+ 
+-/**
+- * Generates a orthogonal projection matrix with the given bounds
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {number} left Left bound of the frustum
+- * @param {number} right Right bound of the frustum
+- * @param {number} bottom Bottom bound of the frustum
+- * @param {number} top Top bound of the frustum
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-mat4.ortho = function (out, left, right, bottom, top, near, far) {
+-    var lr = 1 / (left - right),
+-        bt = 1 / (bottom - top),
+-        nf = 1 / (near - far);
+-    out[0] = -2 * lr;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = -2 * bt;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 2 * nf;
+-    out[11] = 0;
+-    out[12] = (left + right) * lr;
+-    out[13] = (top + bottom) * bt;
+-    out[14] = (far + near) * nf;
+-    out[15] = 1;
+-    return out;
+-};
++        this._pos = DOM.mousePos(this._el, e);
++        this._time = now;
+ 
+-/**
+- * Generates a look-at matrix with the given eye position, focal point, and up axis
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {vec3} eye Position of the viewer
+- * @param {vec3} center Point the viewer is looking at
+- * @param {vec3} up vec3 pointing up
+- * @returns {mat4} out
+- */
+-mat4.lookAt = function (out, eye, center, up) {
+-    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
+-        eyex = eye[0],
+-        eyey = eye[1],
+-        eyez = eye[2],
+-        upx = up[0],
+-        upy = up[1],
+-        upz = up[2],
+-        centerx = center[0],
+-        centery = center[1],
+-        centerz = center[2];
++        if (value !== 0 && (value % 4.000244140625) === 0) {
++            // This one is definitely a mouse wheel event.
++            this._type = 'wheel';
++            // Normalize this value to match trackpad.
++            value = Math.floor(value / 4);
+ 
+-    if (Math.abs(eyex - centerx) < glMatrix.EPSILON &&
+-        Math.abs(eyey - centery) < glMatrix.EPSILON &&
+-        Math.abs(eyez - centerz) < glMatrix.EPSILON) {
+-        return mat4.identity(out);
+-    }
++        } else if (value !== 0 && Math.abs(value) < 4) {
++            // This one is definitely a trackpad event because it is so small.
++            this._type = 'trackpad';
+ 
+-    z0 = eyex - centerx;
+-    z1 = eyey - centery;
+-    z2 = eyez - centerz;
++        } else if (timeDelta > 400) {
++            // This is likely a new scroll action.
++            this._type = null;
++            this._lastValue = value;
+ 
+-    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
+-    z0 *= len;
+-    z1 *= len;
+-    z2 *= len;
++            // Start a timeout in case this was a singular event, and dely it by up to 40ms.
++            this._timeout = setTimeout(this._onTimeout, 40);
+ 
+-    x0 = upy * z2 - upz * z1;
+-    x1 = upz * z0 - upx * z2;
+-    x2 = upx * z1 - upy * z0;
+-    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
+-    if (!len) {
+-        x0 = 0;
+-        x1 = 0;
+-        x2 = 0;
+-    } else {
+-        len = 1 / len;
+-        x0 *= len;
+-        x1 *= len;
+-        x2 *= len;
+-    }
++        } else if (!this._type) {
++            // This is a repeating event, but we don't know the type of event just yet.
++            // If the delta per time is small, we assume it's a fast trackpad; otherwise we switch into wheel mode.
++            this._type = (Math.abs(timeDelta * value) < 200) ? 'trackpad' : 'wheel';
+ 
+-    y0 = z1 * x2 - z2 * x1;
+-    y1 = z2 * x0 - z0 * x2;
+-    y2 = z0 * x1 - z1 * x0;
++            // Make sure our delayed event isn't fired again, because we accumulate
++            // the previous event (which was less than 40ms ago) into this event.
++            if (this._timeout) {
++                clearTimeout(this._timeout);
++                this._timeout = null;
++                value += this._lastValue;
++            }
++        }
+ 
+-    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
+-    if (!len) {
+-        y0 = 0;
+-        y1 = 0;
+-        y2 = 0;
+-    } else {
+-        len = 1 / len;
+-        y0 *= len;
+-        y1 *= len;
+-        y2 *= len;
+-    }
++        // Slow down zoom if shift key is held for more precise zooming
++        if (e.shiftKey && value) value = value / 4;
+ 
+-    out[0] = x0;
+-    out[1] = y0;
+-    out[2] = z0;
+-    out[3] = 0;
+-    out[4] = x1;
+-    out[5] = y1;
+-    out[6] = z1;
+-    out[7] = 0;
+-    out[8] = x2;
+-    out[9] = y2;
+-    out[10] = z2;
+-    out[11] = 0;
+-    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
+-    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
+-    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
+-    out[15] = 1;
++        // Only fire the callback if we actually know what type of scrolling device the user uses.
++        if (this._type) this._zoom(-value, e);
+ 
+-    return out;
+-};
++        e.preventDefault();
++    },
+ 
+-/**
+- * Returns a string representation of a mat4
+- *
+- * @param {mat4} mat matrix to represent as a string
+- * @returns {String} string representation of the matrix
+- */
+-mat4.str = function (a) {
+-    return 'mat4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ', ' +
+-                    a[4] + ', ' + a[5] + ', ' + a[6] + ', ' + a[7] + ', ' +
+-                    a[8] + ', ' + a[9] + ', ' + a[10] + ', ' + a[11] + ', ' +
+-                    a[12] + ', ' + a[13] + ', ' + a[14] + ', ' + a[15] + ')';
+-};
++    _onTimeout: function () {
++        this._type = 'wheel';
++        this._zoom(-this._lastValue);
++    },
+ 
+-/**
+- * Returns Frobenius norm of a mat4
+- *
+- * @param {mat4} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
+- */
+-mat4.frob = function (a) {
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2) + Math.pow(a[9], 2) + Math.pow(a[10], 2) + Math.pow(a[11], 2) + Math.pow(a[12], 2) + Math.pow(a[13], 2) + Math.pow(a[14], 2) + Math.pow(a[15], 2) ))
+-};
++    _zoom: function (delta, e) {
++        if (delta === 0) return;
++        var map = this._map;
+ 
+-/**
+- * Adds two mat4's
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    out[4] = a[4] + b[4];
+-    out[5] = a[5] + b[5];
+-    out[6] = a[6] + b[6];
+-    out[7] = a[7] + b[7];
+-    out[8] = a[8] + b[8];
+-    out[9] = a[9] + b[9];
+-    out[10] = a[10] + b[10];
+-    out[11] = a[11] + b[11];
+-    out[12] = a[12] + b[12];
+-    out[13] = a[13] + b[13];
+-    out[14] = a[14] + b[14];
+-    out[15] = a[15] + b[15];
+-    return out;
+-};
++        // Scale by sigmoid of scroll wheel delta.
++        var scale = 2 / (1 + Math.exp(-Math.abs(delta / 100)));
++        if (delta < 0 && scale !== 0) scale = 1 / scale;
+ 
+-/**
+- * Subtracts matrix b from matrix a
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    out[4] = a[4] - b[4];
+-    out[5] = a[5] - b[5];
+-    out[6] = a[6] - b[6];
+-    out[7] = a[7] - b[7];
+-    out[8] = a[8] - b[8];
+-    out[9] = a[9] - b[9];
+-    out[10] = a[10] - b[10];
+-    out[11] = a[11] - b[11];
+-    out[12] = a[12] - b[12];
+-    out[13] = a[13] - b[13];
+-    out[14] = a[14] - b[14];
+-    out[15] = a[15] - b[15];
+-    return out;
++        var fromScale = map.ease ? map.ease.to : map.transform.scale,
++            targetZoom = map.transform.scaleZoom(fromScale * scale);
++
++        map.zoomTo(targetZoom, {
++            duration: 0,
++            around: map.unproject(this._pos),
++            delayEndEvents: 200
++        }, { originalEvent: e });
++    }
+ };
+ 
+-/**
+- * Alias for {@link mat4.subtract}
+- * @function
+- */
+-mat4.sub = mat4.subtract;
+ 
+ /**
+- * Multiply each element of the matrix by a scalar.
++ * Zoom start event. This event is emitted just before the map begins a transition from one
++ * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat4} out
++ * @event zoomstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-mat4.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    out[4] = a[4] * b;
+-    out[5] = a[5] * b;
+-    out[6] = a[6] * b;
+-    out[7] = a[7] * b;
+-    out[8] = a[8] * b;
+-    out[9] = a[9] * b;
+-    out[10] = a[10] * b;
+-    out[11] = a[11] * b;
+-    out[12] = a[12] * b;
+-    out[13] = a[13] * b;
+-    out[14] = a[14] * b;
+-    out[15] = a[15] * b;
+-    return out;
+-};
+ 
+ /**
+- * Adds two mat4's after multiplying each element of the second operand by a scalar value.
++ * Zoom event. This event is emitted repeatedly during animated transitions from one zoom level to
++ * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat4} out the receiving vector
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat4} out
++ * @event zoom
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-mat4.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    out[4] = a[4] + (b[4] * scale);
+-    out[5] = a[5] + (b[5] * scale);
+-    out[6] = a[6] + (b[6] * scale);
+-    out[7] = a[7] + (b[7] * scale);
+-    out[8] = a[8] + (b[8] * scale);
+-    out[9] = a[9] + (b[9] * scale);
+-    out[10] = a[10] + (b[10] * scale);
+-    out[11] = a[11] + (b[11] * scale);
+-    out[12] = a[12] + (b[12] * scale);
+-    out[13] = a[13] + (b[13] * scale);
+-    out[14] = a[14] + (b[14] * scale);
+-    out[15] = a[15] + (b[15] * scale);
+-    return out;
+-};
+ 
+ /**
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ * Zoom end event. This event is emitted just after the map completes a transition from one
++ * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat4} a The first matrix.
+- * @param {mat4} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
++ * @event zoomend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-mat4.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && 
+-           a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && 
+-           a[8] === b[8] && a[9] === b[9] && a[10] === b[10] && a[11] === b[11] &&
+-           a[12] === b[12] && a[13] === b[13] && a[14] === b[14] && a[15] === b[15];
+-};
++
++},{"../../util/browser":155,"../../util/dom":158,"../../util/util":169}],148:[function(require,module,exports){
++'use strict';
++
++var DOM = require('../../util/dom'),
++    util = require('../../util/util');
++
++module.exports = TouchZoomRotateHandler;
++
++var inertiaLinearity = 0.15,
++    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
++    inertiaDeceleration = 12, // scale / s^2
++    inertiaMaxSpeed = 2.5, // scale / s
++    significantScaleThreshold = 0.15,
++    significantRotateThreshold = 4;
++
+ 
+ /**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
+- *
+- * @param {mat4} a The first matrix.
+- * @param {mat4} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
++ * The `TouchZoomRotateHandler` allows a user to zoom and rotate the map by
++ * pinching on a touchscreen.
++ * @class TouchZoomRotateHandler
+  */
+-mat4.equals = function (a, b) {
+-    var a0  = a[0],  a1  = a[1],  a2  = a[2],  a3  = a[3],
+-        a4  = a[4],  a5  = a[5],  a6  = a[6],  a7  = a[7], 
+-        a8  = a[8],  a9  = a[9],  a10 = a[10], a11 = a[11], 
+-        a12 = a[12], a13 = a[13], a14 = a[14], a15 = a[15];
++function TouchZoomRotateHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-    var b0  = b[0],  b1  = b[1],  b2  = b[2],  b3  = b[3],
+-        b4  = b[4],  b5  = b[5],  b6  = b[6],  b7  = b[7], 
+-        b8  = b[8],  b9  = b[9],  b10 = b[10], b11 = b[11], 
+-        b12 = b[12], b13 = b[13], b14 = b[14], b15 = b[15];
++    util.bindHandlers(this);
++}
+ 
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
+-            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
+-            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
+-            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
+-            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
+-            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)) &&
+-            Math.abs(a9 - b9) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a9), Math.abs(b9)) &&
+-            Math.abs(a10 - b10) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a10), Math.abs(b10)) &&
+-            Math.abs(a11 - b11) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a11), Math.abs(b11)) &&
+-            Math.abs(a12 - b12) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a12), Math.abs(b12)) &&
+-            Math.abs(a13 - b13) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a13), Math.abs(b13)) &&
+-            Math.abs(a14 - b14) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a14), Math.abs(b14)) &&
+-            Math.abs(a15 - b15) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a15), Math.abs(b15)));
+-};
++TouchZoomRotateHandler.prototype = {
+ 
++    _enabled: false,
+ 
++    /**
++     * Returns the current enabled/disabled state of the "pinch to rotate and zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-module.exports = mat4;
++    /**
++     * Enable the "pinch to rotate and zoom" interaction.
++     * @example
++     *   map.touchZoomRotate.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('touchstart', this._onStart, false);
++        this._enabled = true;
++    },
+ 
+-},{"./common.js":134}],139:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++    /**
++     * Disable the "pinch to rotate and zoom" interaction.
++     * @example
++     *   map.touchZoomRotate.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('touchstart', this._onStart);
++        this._enabled = false;
++    },
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    /**
++     * Disable the "pinch to rotate" interaction, leaving the "pinch to zoom"
++     * interaction enabled.
++     * @example
++     *   map.touchZoomRotate.disableRotation();
++     */
++    disableRotation: function() {
++        this._rotationDisabled = true;
++    },
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    /**
++     * Enable the "pinch to rotate" interaction, undoing a call to
++     * `disableRotation`.
++     * @example
++     *   map.touchZoomRotate.enable();
++     *   map.touchZoomRotate.enableRotation();
++     */
++    enableRotation: function() {
++        this._rotationDisabled = false;
++    },
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    _onStart: function (e) {
++        if (e.touches.length !== 2) return;
+ 
+-var glMatrix = require("./common.js");
+-var mat3 = require("./mat3.js");
+-var vec3 = require("./vec3.js");
+-var vec4 = require("./vec4.js");
++        var p0 = DOM.mousePos(this._el, e.touches[0]),
++            p1 = DOM.mousePos(this._el, e.touches[1]);
+ 
+-/**
+- * @class Quaternion
+- * @name quat
+- */
+-var quat = {};
++        this._startVec = p0.sub(p1);
++        this._startScale = this._map.transform.scale;
++        this._startBearing = this._map.transform.bearing;
++        this._gestureIntent = undefined;
++        this._inertia = [];
+ 
+-/**
+- * Creates a new identity quat
+- *
+- * @returns {quat} a new quaternion
+- */
+-quat.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
+-};
++        document.addEventListener('touchmove', this._onMove, false);
++        document.addEventListener('touchend', this._onEnd, false);
++    },
+ 
+-/**
+- * Sets a quaternion to represent the shortest rotation from one
+- * vector to another.
+- *
+- * Both vectors are assumed to be unit length.
+- *
+- * @param {quat} out the receiving quaternion.
+- * @param {vec3} a the initial vector
+- * @param {vec3} b the destination vector
+- * @returns {quat} out
+- */
+-quat.rotationTo = (function() {
+-    var tmpvec3 = vec3.create();
+-    var xUnitVec3 = vec3.fromValues(1,0,0);
+-    var yUnitVec3 = vec3.fromValues(0,1,0);
++    _onMove: function (e) {
++        if (e.touches.length !== 2) return;
++
++        var p0 = DOM.mousePos(this._el, e.touches[0]),
++            p1 = DOM.mousePos(this._el, e.touches[1]),
++            p = p0.add(p1).div(2),
++            vec = p0.sub(p1),
++            scale = vec.mag() / this._startVec.mag(),
++            bearing = this._rotationDisabled ? 0 : vec.angleWith(this._startVec) * 180 / Math.PI,
++            map = this._map;
++
++        // Determine 'intent' by whichever threshold is surpassed first,
++        // then keep that state for the duration of this gesture.
++        if (!this._gestureIntent) {
++            var scalingSignificantly = (Math.abs(1 - scale) > significantScaleThreshold),
++                rotatingSignificantly = (Math.abs(bearing) > significantRotateThreshold);
++
++            if (rotatingSignificantly) {
++                this._gestureIntent = 'rotate';
++            } else if (scalingSignificantly) {
++                this._gestureIntent = 'zoom';
++            }
++
++            if (this._gestureIntent) {
++                this._startVec = vec;
++                this._startScale = map.transform.scale;
++                this._startBearing = map.transform.bearing;
++            }
+ 
+-    return function(out, a, b) {
+-        var dot = vec3.dot(a, b);
+-        if (dot < -0.999999) {
+-            vec3.cross(tmpvec3, xUnitVec3, a);
+-            if (vec3.length(tmpvec3) < 0.000001)
+-                vec3.cross(tmpvec3, yUnitVec3, a);
+-            vec3.normalize(tmpvec3, tmpvec3);
+-            quat.setAxisAngle(out, tmpvec3, Math.PI);
+-            return out;
+-        } else if (dot > 0.999999) {
+-            out[0] = 0;
+-            out[1] = 0;
+-            out[2] = 0;
+-            out[3] = 1;
+-            return out;
+         } else {
+-            vec3.cross(tmpvec3, a, b);
+-            out[0] = tmpvec3[0];
+-            out[1] = tmpvec3[1];
+-            out[2] = tmpvec3[2];
+-            out[3] = 1 + dot;
+-            return quat.normalize(out, out);
++            var param = { duration: 0, around: map.unproject(p) };
++
++            if (this._gestureIntent === 'rotate') {
++                param.bearing = this._startBearing + bearing;
++            }
++            if (this._gestureIntent === 'zoom' || this._gestureIntent === 'rotate') {
++                param.zoom = map.transform.scaleZoom(this._startScale * scale);
++            }
++
++            map.stop();
++            this._drainInertiaBuffer();
++            this._inertia.push([Date.now(), scale, p]);
++
++            map.easeTo(param, { originalEvent: e });
+         }
+-    };
+-})();
+ 
+-/**
+- * Sets the specified quaternion with values corresponding to the given
+- * axes. Each axis is a vec3 and is expected to be unit length and
+- * perpendicular to all other specified axes.
+- *
+- * @param {vec3} view  the vector representing the viewing direction
+- * @param {vec3} right the vector representing the local "right" direction
+- * @param {vec3} up    the vector representing the local "up" direction
+- * @returns {quat} out
+- */
+-quat.setAxes = (function() {
+-    var matr = mat3.create();
++        e.preventDefault();
++    },
+ 
+-    return function(out, view, right, up) {
+-        matr[0] = right[0];
+-        matr[3] = right[1];
+-        matr[6] = right[2];
++    _onEnd: function (e) {
++        document.removeEventListener('touchmove', this._onMove);
++        document.removeEventListener('touchend', this._onEnd);
++        this._drainInertiaBuffer();
+ 
+-        matr[1] = up[0];
+-        matr[4] = up[1];
+-        matr[7] = up[2];
++        var inertia = this._inertia,
++            map = this._map;
+ 
+-        matr[2] = -view[0];
+-        matr[5] = -view[1];
+-        matr[8] = -view[2];
++        if (inertia.length < 2) {
++            map.snapToNorth({}, { originalEvent: e });
++            return;
++        }
+ 
+-        return quat.normalize(out, quat.fromMat3(out, matr));
+-    };
+-})();
++        var last = inertia[inertia.length - 1],
++            first = inertia[0],
++            lastScale = map.transform.scaleZoom(this._startScale * last[1]),
++            firstScale = map.transform.scaleZoom(this._startScale * first[1]),
++            scaleOffset = lastScale - firstScale,
++            scaleDuration = (last[0] - first[0]) / 1000,
++            p = last[2];
+ 
+-/**
+- * Creates a new quat initialized with values from an existing quaternion
+- *
+- * @param {quat} a quaternion to clone
+- * @returns {quat} a new quaternion
+- * @function
+- */
+-quat.clone = vec4.clone;
++        if (scaleDuration === 0 || lastScale === firstScale) {
++            map.snapToNorth({}, { originalEvent: e });
++            return;
++        }
+ 
+-/**
+- * Creates a new quat initialized with the given values
+- *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {quat} a new quaternion
+- * @function
+- */
+-quat.fromValues = vec4.fromValues;
++        // calculate scale/s speed and adjust for increased initial animation speed when easing
++        var speed = scaleOffset * inertiaLinearity / scaleDuration; // scale/s
+ 
+-/**
+- * Copy the values from one quat to another
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the source quaternion
+- * @returns {quat} out
+- * @function
+- */
+-quat.copy = vec4.copy;
++        if (Math.abs(speed) > inertiaMaxSpeed) {
++            if (speed > 0) {
++                speed = inertiaMaxSpeed;
++            } else {
++                speed = -inertiaMaxSpeed;
++            }
++        }
+ 
+-/**
+- * Set the components of a quat to the given values
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {quat} out
+- * @function
+- */
+-quat.set = vec4.set;
++        var duration = Math.abs(speed / (inertiaDeceleration * inertiaLinearity)) * 1000,
++            targetScale = lastScale + speed * duration / 2000;
+ 
+-/**
+- * Set a quat to the identity quaternion
++        if (targetScale < 0) {
++            targetScale = 0;
++        }
++
++        map.easeTo({
++            zoom: targetScale,
++            duration: duration,
++            easing: inertiaEasing,
++            around: map.unproject(p)
++        }, { originalEvent: e });
++    },
++
++    _drainInertiaBuffer: function() {
++        var inertia = this._inertia,
++            now = Date.now(),
++            cutoff = 160; // msec
++
++        while (inertia.length > 2 && now - inertia[0][0] > cutoff) inertia.shift();
++    }
++};
++
++},{"../../util/dom":158,"../../util/util":169}],149:[function(require,module,exports){
++'use strict';
++
++/*
++ * Adds the map's position to its page's location hash.
++ * Passed as an option to the map object.
+  *
+- * @param {quat} out the receiving quaternion
+- * @returns {quat} out
++ * @class mapboxgl.Hash
++ * @returns {Hash} `this`
+  */
+-quat.identity = function(out) {
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
+-};
++module.exports = Hash;
++
++var util = require('../util/util');
++
++function Hash() {
++    util.bindAll([
++        '_onHashChange',
++        '_updateHash'
++    ], this);
++}
++
++Hash.prototype = {
++    /*
++     * Map element to listen for coordinate changes
++     *
++     * @param {Object} map
++     * @returns {Hash} `this`
++     */
++    addTo: function(map) {
++        this._map = map;
++        window.addEventListener('hashchange', this._onHashChange, false);
++        this._map.on('moveend', this._updateHash);
++        return this;
++    },
++
++    /*
++     * Removes hash
++     *
++     * @returns {Popup} `this`
++     */
++    remove: function() {
++        window.removeEventListener('hashchange', this._onHashChange, false);
++        this._map.off('moveend', this._updateHash);
++        delete this._map;
++        return this;
++    },
++
++    _onHashChange: function() {
++        var loc = location.hash.replace('#', '').split('/');
++        if (loc.length >= 3) {
++            this._map.jumpTo({
++                center: [+loc[2], +loc[1]],
++                zoom: +loc[0],
++                bearing: +(loc[3] || 0)
++            });
++            return true;
++        }
++        return false;
++    },
++
++    _updateHash: function() {
++        var center = this._map.getCenter(),
++            zoom = this._map.getZoom(),
++            bearing = this._map.getBearing(),
++            precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2)),
++
++            hash = '#' + (Math.round(zoom * 100) / 100) +
++                '/' + center.lat.toFixed(precision) +
++                '/' + center.lng.toFixed(precision) +
++                (bearing ? '/' + (Math.round(bearing * 10) / 10) : '');
+ 
+-/**
+- * Sets a quat from the given angle and rotation axis,
+- * then returns it.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {vec3} axis the axis around which to rotate
+- * @param {Number} rad the angle in radians
+- * @returns {quat} out
+- **/
+-quat.setAxisAngle = function(out, axis, rad) {
+-    rad = rad * 0.5;
+-    var s = Math.sin(rad);
+-    out[0] = s * axis[0];
+-    out[1] = s * axis[1];
+-    out[2] = s * axis[2];
+-    out[3] = Math.cos(rad);
+-    return out;
++        window.history.replaceState('', '', hash);
++    }
+ };
+ 
+-/**
+- * Gets the rotation axis and angle for a given
+- *  quaternion. If a quaternion is created with
+- *  setAxisAngle, this method will return the same
+- *  values as providied in the original parameter list
+- *  OR functionally equivalent values.
+- * Example: The quaternion formed by axis [0, 0, 1] and
+- *  angle -90 is the same as the quaternion formed by
+- *  [0, 0, 1] and 270. This method favors the latter.
+- * @param  {vec3} out_axis  Vector receiving the axis of rotation
+- * @param  {quat} q     Quaternion to be decomposed
+- * @return {Number}     Angle, in radians, of the rotation
+- */
+-quat.getAxisAngle = function(out_axis, q) {
+-    var rad = Math.acos(q[3]) * 2.0;
+-    var s = Math.sin(rad / 2.0);
+-    if (s != 0.0) {
+-        out_axis[0] = q[0] / s;
+-        out_axis[1] = q[1] / s;
+-        out_axis[2] = q[2] / s;
+-    } else {
+-        // If s is zero, return any axis (no rotation - axis does not matter)
+-        out_axis[0] = 1;
+-        out_axis[1] = 0;
+-        out_axis[2] = 0;
+-    }
+-    return rad;
++},{"../util/util":169}],150:[function(require,module,exports){
++'use strict';
++
++var handlers = {
++    scrollZoom: require('./handler/scroll_zoom'),
++    boxZoom: require('./handler/box_zoom'),
++    dragRotate: require('./handler/drag_rotate'),
++    dragPan: require('./handler/drag_pan'),
++    keyboard: require('./handler/keyboard'),
++    doubleClickZoom: require('./handler/dblclick_zoom'),
++    touchZoomRotate: require('./handler/touch_zoom_rotate')
+ };
+ 
+-/**
+- * Adds two quat's
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @returns {quat} out
+- * @function
+- */
+-quat.add = vec4.add;
++var DOM = require('../util/dom'),
++    util = require('../util/util'),
++    Point = require('point-geometry');
+ 
+-/**
+- * Multiplies two quat's
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @returns {quat} out
+- */
+-quat.multiply = function(out, a, b) {
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bx = b[0], by = b[1], bz = b[2], bw = b[3];
++module.exports = Interaction;
+ 
+-    out[0] = ax * bw + aw * bx + ay * bz - az * by;
+-    out[1] = ay * bw + aw * by + az * bx - ax * bz;
+-    out[2] = az * bw + aw * bz + ax * by - ay * bx;
+-    out[3] = aw * bw - ax * bx - ay * by - az * bz;
+-    return out;
+-};
++function Interaction(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-/**
+- * Alias for {@link quat.multiply}
+- * @function
+- */
+-quat.mul = quat.multiply;
++    for (var name in handlers) {
++        map[name] = new handlers[name](map);
++    }
+ 
+-/**
+- * Scales a quat by a scalar number
+- *
+- * @param {quat} out the receiving vector
+- * @param {quat} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {quat} out
+- * @function
+- */
+-quat.scale = vec4.scale;
++    util.bindHandlers(this);
++}
+ 
+-/**
+- * Rotates a quaternion by the given angle about the X axis
+- *
+- * @param {quat} out quat receiving operation result
+- * @param {quat} a quat to rotate
+- * @param {number} rad angle (in radians) to rotate
+- * @returns {quat} out
+- */
+-quat.rotateX = function (out, a, rad) {
+-    rad *= 0.5; 
++Interaction.prototype = {
++    enable: function () {
++        var options = this._map.options,
++            el = this._el;
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bx = Math.sin(rad), bw = Math.cos(rad);
++        for (var name in handlers) {
++            if (options[name]) this._map[name].enable();
++        }
+ 
+-    out[0] = ax * bw + aw * bx;
+-    out[1] = ay * bw + az * bx;
+-    out[2] = az * bw - ay * bx;
+-    out[3] = aw * bw - ax * bx;
+-    return out;
+-};
++        el.addEventListener('mousedown', this._onMouseDown, false);
++        el.addEventListener('mouseup', this._onMouseUp, false);
++        el.addEventListener('mousemove', this._onMouseMove, false);
++        el.addEventListener('touchstart', this._onTouchStart, false);
++        el.addEventListener('touchend', this._onTouchEnd, false);
++        el.addEventListener('touchmove', this._onTouchMove, false);
++        el.addEventListener('touchcancel', this._onTouchCancel, false);
++        el.addEventListener('click', this._onClick, false);
++        el.addEventListener('dblclick', this._onDblClick, false);
++        el.addEventListener('contextmenu', this._onContextMenu, false);
++    },
+ 
+-/**
+- * Rotates a quaternion by the given angle about the Y axis
+- *
+- * @param {quat} out quat receiving operation result
+- * @param {quat} a quat to rotate
+- * @param {number} rad angle (in radians) to rotate
+- * @returns {quat} out
+- */
+-quat.rotateY = function (out, a, rad) {
+-    rad *= 0.5; 
++    disable: function () {
++        var options = this._map.options,
++            el = this._el;
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        by = Math.sin(rad), bw = Math.cos(rad);
++        for (var name in handlers) {
++            if (options[name]) this._map[name].disable();
++        }
+ 
+-    out[0] = ax * bw - az * by;
+-    out[1] = ay * bw + aw * by;
+-    out[2] = az * bw + ax * by;
+-    out[3] = aw * bw - ay * by;
+-    return out;
+-};
++        el.removeEventListener('mousedown', this._onMouseDown);
++        el.removeEventListener('mouseup', this._onMouseUp);
++        el.removeEventListener('mousemove', this._onMouseMove);
++        el.removeEventListener('touchstart', this._onTouchStart);
++        el.removeEventListener('touchend', this._onTouchEnd);
++        el.removeEventListener('touchmove', this._onTouchMove);
++        el.removeEventListener('touchcancel', this._onTouchCancel);
++        el.removeEventListener('click', this._onClick);
++        el.removeEventListener('dblclick', this._onDblClick);
++        el.removeEventListener('contextmenu', this._onContextMenu);
++    },
+ 
+-/**
+- * Rotates a quaternion by the given angle about the Z axis
+- *
+- * @param {quat} out quat receiving operation result
+- * @param {quat} a quat to rotate
+- * @param {number} rad angle (in radians) to rotate
+- * @returns {quat} out
+- */
+-quat.rotateZ = function (out, a, rad) {
+-    rad *= 0.5; 
++    _onMouseDown: function (e) {
++        this._map.stop();
++        this._startPos = DOM.mousePos(this._el, e);
++        this._fireMouseEvent('mousedown', e);
++    },
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bz = Math.sin(rad), bw = Math.cos(rad);
++    _onMouseUp: function (e) {
++        var map = this._map,
++            rotating = map.dragRotate && map.dragRotate.isActive();
+ 
+-    out[0] = ax * bw + ay * bz;
+-    out[1] = ay * bw - ax * bz;
+-    out[2] = az * bw + aw * bz;
+-    out[3] = aw * bw - az * bz;
+-    return out;
+-};
++        if (this._contextMenuEvent && !rotating) {
++            this._fireMouseEvent('contextmenu', this._contextMenuEvent);
++        }
+ 
+-/**
+- * Calculates the W component of a quat from the X, Y, and Z components.
+- * Assumes that quaternion is 1 unit in length.
+- * Any existing W component will be ignored.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quat to calculate W component of
+- * @returns {quat} out
+- */
+-quat.calculateW = function (out, a) {
+-    var x = a[0], y = a[1], z = a[2];
++        this._contextMenuEvent = null;
++        this._fireMouseEvent('mouseup', e);
++    },
+ 
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    out[3] = Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));
+-    return out;
+-};
++    _onMouseMove: function (e) {
++        var map = this._map,
++            el = this._el;
+ 
+-/**
+- * Calculates the dot product of two quat's
+- *
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @returns {Number} dot product of a and b
+- * @function
+- */
+-quat.dot = vec4.dot;
++        if (map.dragPan && map.dragPan.isActive()) return;
++        if (map.dragRotate && map.dragRotate.isActive()) return;
+ 
+-/**
+- * Performs a linear interpolation between two quat's
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {quat} out
+- * @function
+- */
+-quat.lerp = vec4.lerp;
++        var target = e.toElement || e.target;
++        while (target && target !== el) target = target.parentNode;
++        if (target !== el) return;
+ 
+-/**
+- * Performs a spherical linear interpolation between two quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {quat} out
+- */
+-quat.slerp = function (out, a, b, t) {
+-    // benchmarks:
+-    //    http://jsperf.com/quaternion-slerp-implementations
++        this._fireMouseEvent('mousemove', e);
++    },
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bx = b[0], by = b[1], bz = b[2], bw = b[3];
++    _onTouchStart: function (e) {
++        this._map.stop();
++        this._fireTouchEvent('touchstart', e);
+ 
+-    var        omega, cosom, sinom, scale0, scale1;
++        if (!e.touches || e.touches.length > 1) return;
+ 
+-    // calc cosine
+-    cosom = ax * bx + ay * by + az * bz + aw * bw;
+-    // adjust signs (if necessary)
+-    if ( cosom < 0.0 ) {
+-        cosom = -cosom;
+-        bx = - bx;
+-        by = - by;
+-        bz = - bz;
+-        bw = - bw;
+-    }
+-    // calculate coefficients
+-    if ( (1.0 - cosom) > 0.000001 ) {
+-        // standard case (slerp)
+-        omega  = Math.acos(cosom);
+-        sinom  = Math.sin(omega);
+-        scale0 = Math.sin((1.0 - t) * omega) / sinom;
+-        scale1 = Math.sin(t * omega) / sinom;
+-    } else {        
+-        // "from" and "to" quaternions are very close 
+-        //  ... so we can do a linear interpolation
+-        scale0 = 1.0 - t;
+-        scale1 = t;
+-    }
+-    // calculate final values
+-    out[0] = scale0 * ax + scale1 * bx;
+-    out[1] = scale0 * ay + scale1 * by;
+-    out[2] = scale0 * az + scale1 * bz;
+-    out[3] = scale0 * aw + scale1 * bw;
+-    
+-    return out;
+-};
++        if (!this._tapped) {
++            this._tapped = setTimeout(this._onTouchTimeout, 300);
+ 
+-/**
+- * Performs a spherical linear interpolation with two control points
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {quat} c the third operand
+- * @param {quat} d the fourth operand
+- * @param {Number} t interpolation amount
+- * @returns {quat} out
+- */
+-quat.sqlerp = (function () {
+-  var temp1 = quat.create();
+-  var temp2 = quat.create();
+-  
+-  return function (out, a, b, c, d, t) {
+-    quat.slerp(temp1, a, d, t);
+-    quat.slerp(temp2, b, c, t);
+-    quat.slerp(out, temp1, temp2, 2 * t * (1 - t));
+-    
+-    return out;
+-  };
+-}());
++        } else {
++            clearTimeout(this._tapped);
++            this._tapped = null;
++            this._fireMouseEvent('dblclick', e);
++        }
++    },
+ 
+-/**
+- * Calculates the inverse of a quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quat to calculate inverse of
+- * @returns {quat} out
+- */
+-quat.invert = function(out, a) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+-        dot = a0*a0 + a1*a1 + a2*a2 + a3*a3,
+-        invDot = dot ? 1.0/dot : 0;
+-    
+-    // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0
++    _onTouchMove: function (e) {
++        this._fireTouchEvent('touchmove', e);
++    },
+ 
+-    out[0] = -a0*invDot;
+-    out[1] = -a1*invDot;
+-    out[2] = -a2*invDot;
+-    out[3] = a3*invDot;
+-    return out;
+-};
++    _onTouchEnd: function (e) {
++        this._fireTouchEvent('touchend', e);
++    },
+ 
+-/**
+- * Calculates the conjugate of a quat
+- * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quat to calculate conjugate of
+- * @returns {quat} out
+- */
+-quat.conjugate = function (out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    out[3] = a[3];
+-    return out;
+-};
++    _onTouchCancel: function (e) {
++        this._fireTouchEvent('touchcancel', e);
++    },
+ 
+-/**
+- * Calculates the length of a quat
+- *
+- * @param {quat} a vector to calculate length of
+- * @returns {Number} length of a
+- * @function
+- */
+-quat.length = vec4.length;
++    _onTouchTimeout: function () {
++        this._tapped = null;
++    },
+ 
+-/**
+- * Alias for {@link quat.length}
+- * @function
+- */
+-quat.len = quat.length;
++    _onClick: function (e) {
++        var pos = DOM.mousePos(this._el, e);
+ 
+-/**
+- * Calculates the squared length of a quat
+- *
+- * @param {quat} a vector to calculate squared length of
+- * @returns {Number} squared length of a
+- * @function
+- */
+-quat.squaredLength = vec4.squaredLength;
++        if (pos.equals(this._startPos)) {
++            this._fireMouseEvent('click', e);
++        }
++    },
+ 
+-/**
+- * Alias for {@link quat.squaredLength}
+- * @function
+- */
+-quat.sqrLen = quat.squaredLength;
++    _onDblClick: function (e) {
++        this._fireMouseEvent('dblclick', e);
++        e.preventDefault();
++    },
+ 
+-/**
+- * Normalize a quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quaternion to normalize
+- * @returns {quat} out
+- * @function
+- */
+-quat.normalize = vec4.normalize;
++    _onContextMenu: function (e) {
++        this._contextMenuEvent = e;
++        e.preventDefault();
++    },
+ 
+-/**
+- * Creates a quaternion from the given 3x3 rotation matrix.
+- *
+- * NOTE: The resultant quaternion is not normalized, so you should be sure
+- * to renormalize the quaternion yourself where necessary.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {mat3} m rotation matrix
+- * @returns {quat} out
+- * @function
+- */
+-quat.fromMat3 = function(out, m) {
+-    // Algorithm in Ken Shoemake's article in 1987 SIGGRAPH course notes
+-    // article "Quaternion Calculus and Fast Animation".
+-    var fTrace = m[0] + m[4] + m[8];
+-    var fRoot;
++    _fireMouseEvent: function (type, e) {
++        var pos = DOM.mousePos(this._el, e);
+ 
+-    if ( fTrace > 0.0 ) {
+-        // |w| > 1/2, may as well choose w > 1/2
+-        fRoot = Math.sqrt(fTrace + 1.0);  // 2w
+-        out[3] = 0.5 * fRoot;
+-        fRoot = 0.5/fRoot;  // 1/(4w)
+-        out[0] = (m[5]-m[7])*fRoot;
+-        out[1] = (m[6]-m[2])*fRoot;
+-        out[2] = (m[1]-m[3])*fRoot;
+-    } else {
+-        // |w| <= 1/2
+-        var i = 0;
+-        if ( m[4] > m[0] )
+-          i = 1;
+-        if ( m[8] > m[i*3+i] )
+-          i = 2;
+-        var j = (i+1)%3;
+-        var k = (i+2)%3;
+-        
+-        fRoot = Math.sqrt(m[i*3+i]-m[j*3+j]-m[k*3+k] + 1.0);
+-        out[i] = 0.5 * fRoot;
+-        fRoot = 0.5 / fRoot;
+-        out[3] = (m[j*3+k] - m[k*3+j]) * fRoot;
+-        out[j] = (m[j*3+i] + m[i*3+j]) * fRoot;
+-        out[k] = (m[k*3+i] + m[i*3+k]) * fRoot;
+-    }
+-    
+-    return out;
+-};
++        return this._map.fire(type, {
++            lngLat: this._map.unproject(pos),
++            point: pos,
++            originalEvent: e
++        });
++    },
+ 
+-/**
+- * Returns a string representation of a quatenion
+- *
+- * @param {quat} vec vector to represent as a string
+- * @returns {String} string representation of the vector
+- */
+-quat.str = function (a) {
+-    return 'quat(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
++    _fireTouchEvent: function (type, e) {
++        var touches = DOM.touchPos(this._el, e),
++            singular = touches.reduce(function (prev, curr, i, arr) {
++                return prev.add(curr.div(arr.length));
++            }, new Point(0, 0));
++
++        return this._map.fire(type, {
++            lngLat: this._map.unproject(singular),
++            point: singular,
++            lngLats: touches.map(function(t) { return this._map.unproject(t); }, this),
++            points: touches,
++            originalEvent: e
++        });
++    }
+ };
+ 
++
+ /**
+- * Returns whether or not the quaternions have exactly the same elements in the same position (when compared with ===)
++ * When an event [fires]{@link #Evented.fire} as a result of a
++ * user interaction, the event will be called with an EventData
++ * object containing the original DOM event along with coordinates of
++ * the event target.
+  *
+- * @param {quat} a The first quaternion.
+- * @param {quat} b The second quaternion.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * @typedef {Object} EventData
++ * @property {Event} originalEvent The original DOM event
++ * @property {Point} point The pixel location of the event
++ * @property {LngLat} lngLat The geographic location of the event
++ * @example
++ * map.on('click', function(data) {
++ *   var e = data && data.originalEvent;
++ *   console.log('got click ' + (e ? 'button = ' + e.button : ''));
++ * });
+  */
+-quat.exactEquals = vec4.exactEquals;
+ 
+ /**
+- * Returns whether or not the quaternions have approximately the same elements in the same position.
++ * Mouse down event.
+  *
+- * @param {quat} a The first vector.
+- * @param {quat} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * @event mousedown
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [mousedown event](https://developer.mozilla.org/en-US/docs/Web/Events/mousedown)
+  */
+-quat.equals = vec4.equals;
+-
+-module.exports = quat;
+-
+-},{"./common.js":134,"./mat3.js":137,"./vec3.js":141,"./vec4.js":142}],140:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+-
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
+-
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
+-
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
+-
+-var glMatrix = require("./common.js");
+ 
+ /**
+- * @class 2 Dimensional Vector
+- * @name vec2
++ * Mouse up event.
++ *
++ * @event mouseup
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [mouseup event](https://developer.mozilla.org/en-US/docs/Web/Events/mouseup)
+  */
+-var vec2 = {};
+ 
+ /**
+- * Creates a new, empty vec2
++ * Mouse move event.
+  *
+- * @returns {vec2} a new 2D vector
++ * @event mousemove
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [mousemouse event](https://developer.mozilla.org/en-US/docs/Web/Events/mousemove)
+  */
+-vec2.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(2);
+-    out[0] = 0;
+-    out[1] = 0;
+-    return out;
+-};
+ 
+ /**
+- * Creates a new vec2 initialized with values from an existing vector
++ * Touch start event.
+  *
+- * @param {vec2} a vector to clone
+- * @returns {vec2} a new 2D vector
++ * @event touchstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchstart event](https://developer.mozilla.org/en-US/docs/Web/Events/touchstart).
+  */
+-vec2.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(2);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    return out;
+-};
+ 
+ /**
+- * Creates a new vec2 initialized with the given values
++ * Touch end event.
+  *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @returns {vec2} a new 2D vector
++ * @event touchend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
+  */
+-vec2.fromValues = function(x, y) {
+-    var out = new glMatrix.ARRAY_TYPE(2);
+-    out[0] = x;
+-    out[1] = y;
+-    return out;
+-};
+ 
+ /**
+- * Copy the values from one vec2 to another
++ * Touch move event.
+  *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the source vector
+- * @returns {vec2} out
++ * @event touchmove
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchmove event](https://developer.mozilla.org/en-US/docs/Web/Events/touchmove).
+  */
+-vec2.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    return out;
+-};
+ 
+ /**
+- * Set the components of a vec2 to the given values
++ * Touch cancel event.
+  *
+- * @param {vec2} out the receiving vector
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @returns {vec2} out
++ * @event touchcancel
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
+  */
+-vec2.set = function(out, x, y) {
+-    out[0] = x;
+-    out[1] = y;
+-    return out;
+-};
+ 
+ /**
+- * Adds two vec2's
++ * Click event.
+  *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
++ * @event click
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [click event](https://developer.mozilla.org/en-US/docs/Web/Events/click)
+  */
+-vec2.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    return out;
+-};
+ 
+ /**
+- * Subtracts vector b from vector a
++ * Double click event.
+  *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
++ * @event dblclick
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-vec2.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    return out;
+-};
+ 
+ /**
+- * Alias for {@link vec2.subtract}
+- * @function
++ * Context menu event.
++ *
++ * @event contextmenu
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if available
+  */
+-vec2.sub = vec2.subtract;
+ 
+ /**
+- * Multiplies two vec2's
++ * Load event. This event is emitted immediately after all necessary resources have been downloaded
++ * and the first visually complete rendering has occurred.
+  *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
++ * @event load
++ * @memberof Map
++ * @instance
++ * @type {Object}
+  */
+-vec2.multiply = function(out, a, b) {
+-    out[0] = a[0] * b[0];
+-    out[1] = a[1] * b[1];
+-    return out;
+-};
+ 
+ /**
+- * Alias for {@link vec2.multiply}
+- * @function
++ * Move start event. This event is emitted just before the map begins a transition from one
++ * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
++ *
++ * @event movestart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-vec2.mul = vec2.multiply;
+ 
+ /**
+- * Divides two vec2's
++ * Move event. This event is emitted repeatedly during animated transitions from one view to
++ * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
++ * @event move
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-vec2.divide = function(out, a, b) {
+-    out[0] = a[0] / b[0];
+-    out[1] = a[1] / b[1];
+-    return out;
+-};
+ 
+ /**
+- * Alias for {@link vec2.divide}
+- * @function
++ * Move end event. This event is emitted just after the map completes a transition from one
++ * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
++ *
++ * @event moveend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-vec2.div = vec2.divide;
++
++},{"../util/dom":158,"../util/util":169,"./handler/box_zoom":142,"./handler/dblclick_zoom":143,"./handler/drag_pan":144,"./handler/drag_rotate":145,"./handler/keyboard":146,"./handler/scroll_zoom":147,"./handler/touch_zoom_rotate":148,"point-geometry":174}],151:[function(require,module,exports){
++'use strict';
++
++var Canvas = require('../util/canvas');
++var util = require('../util/util');
++var browser = require('../util/browser');
++var Evented = require('../util/evented');
++var DOM = require('../util/dom');
++
++var Style = require('../style/style');
++var AnimationLoop = require('../style/animation_loop');
++var Painter = require('../render/painter');
++
++var Transform = require('../geo/transform');
++var Hash = require('./hash');
++
++var Interaction = require('./interaction');
++
++var Camera = require('./camera');
++var LngLat = require('../geo/lng_lat');
++var LngLatBounds = require('../geo/lng_lat_bounds');
++var Point = require('point-geometry');
++var Attribution = require('./control/attribution');
++
++var defaultMinZoom = 0;
++var defaultMaxZoom = 20;
+ 
+ /**
+- * Math.ceil the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to ceil
+- * @returns {vec2} out
++ * Creates a map instance. This is usually the beginning of your map:
++ * you tell Mapbox GL JS where to put the map by specifying a `container`
++ * option, and the map's style with `style` and other attributes of the map,
++ * and in return Mapbox GL JS initializes the map on your page and returns
++ * a map variable that lets you programmatically call methods on the map.
++ * @class Map
++ * @param {Object} options
++ * @param {string|Element} options.container HTML element to initialize the map in (or element id as string)
++ * @param {number} [options.minZoom=0] Minimum zoom of the map
++ * @param {number} [options.maxZoom=20] Maximum zoom of the map
++ * @param {Object|string} [options.style] Map style. This must be an an object conforming to the schema described in the [style reference](https://mapbox.com/mapbox-gl-style-spec/), or a URL to a JSON style. To load a style from the Mapbox API, you can use a URL of the form `mapbox://styles/:owner/:style`, where `:owner` is your Mapbox account name and `:style` is the style ID. Or you can use one of the predefined Mapbox styles:
++ *   * `mapbox://styles/mapbox/basic-v8` - Simple and flexible starting template.
++ *   * `mapbox://styles/mapbox/bright-v8` - Template for complex custom basemaps.
++ *   * `mapbox://styles/mapbox/streets-v8` - A ready-to-use basemap, perfect for minor customization or incorporating your own data.
++ *   * `mapbox://styles/mapbox/light-v8` - Subtle light backdrop for data vizualizations.
++ *   * `mapbox://styles/mapbox/dark-v8` - Subtle dark backdrop for data vizualizations.
++ * @param {boolean} [options.hash=false] If `true`, the map will track and update the page URL according to map position
++ * @param {boolean} [options.interactive=true] If `false`, no mouse, touch, or keyboard listeners are attached to the map, so it will not respond to input
++ * @param {number} [options.bearingSnap=7] Snap to north threshold in degrees.
++ * @param {Array} [options.classes] Style class names with which to initialize the map
++ * @param {boolean} [options.attributionControl=true] If `true`, an attribution control will be added to the map.
++ * @param {boolean} [options.failIfMajorPerformanceCaveat=false] If `true`, map creation will fail if the implementation determines that the performance of the created WebGL context would be dramatically lower than expected.
++ * @param {boolean} [options.preserveDrawingBuffer=false] If `true`, The maps canvas can be exported to a PNG using `map.getCanvas().toDataURL();`. This is false by default as a performance optimization.
++ * @param {LngLatBounds|Array<Array<number>>} [options.maxBounds] If set, the map is constrained to the given bounds.
++ * @param {boolean} [options.scrollZoom=true] If `true`, enable the "scroll to zoom" interaction (see `ScrollZoomHandler`)
++ * @param {boolean} [options.boxZoom=true] If `true`, enable the "box zoom" interaction (see `BoxZoomHandler`)
++ * @param {boolean} [options.dragRotate=true] If `true`, enable the "drag to rotate" interaction (see `DragRotateHandler`).
++ * @param {boolean} [options.dragPan=true] If `true`, enable the "drag to pan" interaction (see `DragPanHandler`).
++ * @param {boolean} [options.keyboard=true] If `true`, enable keyboard shortcuts (see `KeyboardHandler`).
++ * @param {boolean} [options.doubleClickZoom=true] If `true`, enable the "double click to zoom" interaction (see `DoubleClickZoomHandler`).
++ * @param {boolean} [options.touchZoomRotate=true] If `true`, enable the "pinch to rotate and zoom" interaction (see `TouchZoomRotateHandler`).
++ * @example
++ * var map = new mapboxgl.Map({
++ *   container: 'map',
++ *   center: [-122.420679, 37.772537],
++ *   zoom: 13,
++ *   style: style_object,
++ *   hash: true
++ * });
+  */
+-vec2.ceil = function (out, a) {
+-    out[0] = Math.ceil(a[0]);
+-    out[1] = Math.ceil(a[1]);
+-    return out;
++var Map = module.exports = function(options) {
++
++    options = util.inherit(this.options, options);
++    this._interactive = options.interactive;
++    this._failIfMajorPerformanceCaveat = options.failIfMajorPerformanceCaveat;
++    this._preserveDrawingBuffer = options.preserveDrawingBuffer;
++
++    if (typeof options.container === 'string') {
++        this._container = document.getElementById(options.container);
++    } else {
++        this._container = options.container;
++    }
++
++    this.animationLoop = new AnimationLoop();
++    this.transform = new Transform(options.minZoom, options.maxZoom);
++
++    if (options.maxBounds) {
++        this.setMaxBounds(options.maxBounds);
++    }
++
++    util.bindAll([
++        '_forwardStyleEvent',
++        '_forwardSourceEvent',
++        '_forwardLayerEvent',
++        '_forwardTileEvent',
++        '_onStyleLoad',
++        '_onStyleChange',
++        '_onSourceAdd',
++        '_onSourceRemove',
++        '_onSourceUpdate',
++        '_onWindowResize',
++        'onError',
++        '_update',
++        '_render'
++    ], this);
++
++    this._setupContainer();
++    this._setupPainter();
++
++    this.on('move', this._update.bind(this, false));
++    this.on('zoom', this._update.bind(this, true));
++    this.on('moveend', function() {
++        this.animationLoop.set(300); // text fading
++        this._rerender();
++    }.bind(this));
++
++    if (typeof window !== 'undefined') {
++        window.addEventListener('resize', this._onWindowResize, false);
++    }
++
++    this.interaction = new Interaction(this);
++
++    if (options.interactive) {
++        this.interaction.enable();
++    }
++
++    this._hash = options.hash && (new Hash()).addTo(this);
++    // don't set position from options if set through hash
++    if (!this._hash || !this._hash._onHashChange()) {
++        this.jumpTo(options);
++    }
++
++    this.stacks = {};
++    this._classes = [];
++
++    this.resize();
++
++    if (options.classes) this.setClasses(options.classes);
++    if (options.style) this.setStyle(options.style);
++    if (options.attributionControl) this.addControl(new Attribution(options.attributionControl));
++
++    this.on('style.error', this.onError);
++    this.on('source.error', this.onError);
++    this.on('tile.error', this.onError);
++    this.on('layer.error', this.onError);
+ };
+ 
+-/**
+- * Math.floor the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to floor
+- * @returns {vec2} out
+- */
+-vec2.floor = function (out, a) {
+-    out[0] = Math.floor(a[0]);
+-    out[1] = Math.floor(a[1]);
+-    return out;
+-};
++util.extend(Map.prototype, Evented);
++util.extend(Map.prototype, Camera.prototype);
++util.extend(Map.prototype, /** @lends Map.prototype */{
++
++    options: {
++        center: [0, 0],
++        zoom: 0,
++        bearing: 0,
++        pitch: 0,
++
++        minZoom: defaultMinZoom,
++        maxZoom: defaultMaxZoom,
++
++        interactive: true,
++
++        scrollZoom: true,
++        boxZoom: true,
++        dragRotate: true,
++        dragPan: true,
++        keyboard: true,
++        doubleClickZoom: true,
++        touchZoomRotate: true,
++
++        bearingSnap: 7,
++
++        hash: false,
++
++        attributionControl: true,
++
++        failIfMajorPerformanceCaveat: false,
++        preserveDrawingBuffer: false
++    },
++
++    /**
++     * Adds a control to the map, calling `control.addTo(this)`.
++     *
++     * @param {Control} control
++     * @returns {Map} `this`
++     */
++    addControl: function(control) {
++        control.addTo(this);
++        return this;
++    },
++
++    /**
++     * Adds a style class to a map.
++     *
++     * @param {string} klass name of style class
++     * @param {StyleOptions} [options]
++     * @fires change
++     * @returns {Map} `this`
++     */
++    addClass: function(klass, options) {
++        if (this._classes.indexOf(klass) >= 0 || klass === '') return this;
++        this._classes.push(klass);
++        this._classOptions = options;
++
++        if (this.style) this.style.updateClasses();
++        return this._update(true);
++    },
++
++    /**
++     * Removes a style class from a map.
++     *
++     * @param {string} klass name of style class
++     * @param {StyleOptions} [options]
++     * @fires change
++     * @returns {Map} `this`
++     */
++    removeClass: function(klass, options) {
++        var i = this._classes.indexOf(klass);
++        if (i < 0 || klass === '') return this;
++        this._classes.splice(i, 1);
++        this._classOptions = options;
++
++        if (this.style) this.style.updateClasses();
++        return this._update(true);
++    },
++
++    /**
++     * Helper method to add more than one class.
++     *
++     * @param {Array<string>} klasses An array of class names
++     * @param {StyleOptions} [options]
++     * @fires change
++     * @returns {Map} `this`
++     */
++    setClasses: function(klasses, options) {
++        var uniqueClasses = {};
++        for (var i = 0; i < klasses.length; i++) {
++            if (klasses[i] !== '') uniqueClasses[klasses[i]] = true;
++        }
++        this._classes = Object.keys(uniqueClasses);
++        this._classOptions = options;
++
++        if (this.style) this.style.updateClasses();
++        return this._update(true);
++    },
++
++    /**
++     * Check whether a style class is active.
++     *
++     * @param {string} klass Name of style class
++     * @returns {boolean}
++     */
++    hasClass: function(klass) {
++        return this._classes.indexOf(klass) >= 0;
++    },
++
++    /**
++     * Return an array of the current active style classes.
++     *
++     * @returns {boolean}
++     */
++    getClasses: function() {
++        return this._classes;
++    },
++
++    /**
++     * Detect the map's new width and height and resize it. Given
++     * the `container` of the map specified in the Map constructor,
++     * this reads the new width from the DOM: so this method is often
++     * called after the map's container is resized by another script
++     * or the map is shown after being initially hidden with CSS.
++     *
++     * @returns {Map} `this`
++     */
++    resize: function() {
++        var width = 0, height = 0;
++
++        if (this._container) {
++            width = this._container.offsetWidth || 400;
++            height = this._container.offsetHeight || 300;
++        }
++
++        this._canvas.resize(width, height);
++        this.transform.resize(width, height);
++        this.painter.resize(width, height);
++
++        return this
++            .fire('movestart')
++            .fire('move')
++            .fire('resize')
++            .fire('moveend');
++    },
+ 
+-/**
+- * Returns the minimum of two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.min = function(out, a, b) {
+-    out[0] = Math.min(a[0], b[0]);
+-    out[1] = Math.min(a[1], b[1]);
+-    return out;
+-};
++    /**
++     * Get the map's geographical bounds.
++     *
++     * @returns {LngLatBounds}
++     */
++    getBounds: function() {
++        var bounds = new LngLatBounds(
++            this.transform.pointLocation(new Point(0, 0)),
++            this.transform.pointLocation(this.transform.size));
+ 
+-/**
+- * Returns the maximum of two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.max = function(out, a, b) {
+-    out[0] = Math.max(a[0], b[0]);
+-    out[1] = Math.max(a[1], b[1]);
+-    return out;
+-};
++        if (this.transform.angle || this.transform.pitch) {
++            bounds.extend(this.transform.pointLocation(new Point(this.transform.size.x, 0)));
++            bounds.extend(this.transform.pointLocation(new Point(0, this.transform.size.y)));
++        }
+ 
+-/**
+- * Math.round the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to round
+- * @returns {vec2} out
+- */
+-vec2.round = function (out, a) {
+-    out[0] = Math.round(a[0]);
+-    out[1] = Math.round(a[1]);
+-    return out;
+-};
++        return bounds;
++    },
+ 
+-/**
+- * Scales a vec2 by a scalar number
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {vec2} out
+- */
+-vec2.scale = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    return out;
+-};
++    /**
++     * Set constraint on the map's geographical bounds. Pan or zoom operations that would result in
++     * displaying regions that fall outside of the bounds instead result in displaying the map at the
++     * closest point and/or zoom level of the requested operation that is within the max bounds.
++     *
++     * @param {LngLatBounds | Array<Array<number>> | null | undefined} lnglatbounds Desired max bounds of the map. If null or undefined, function removes any bounds constraints on the map.
++     * @returns {Map} `this`
++     */
++    setMaxBounds: function (lnglatbounds) {
++        if (lnglatbounds) {
++            var b = LngLatBounds.convert(lnglatbounds);
++            this.transform.lngRange = [b.getWest(), b.getEast()];
++            this.transform.latRange = [b.getSouth(), b.getNorth()];
++            this.transform._constrain();
++            this._update();
++        } else if (lnglatbounds === null || lnglatbounds === undefined) {
++            this.transform.lngRange = [];
++            this.transform.latRange = [];
++            this._update();
++        }
++        return this;
+ 
+-/**
+- * Adds two vec2's after scaling the second operand by a scalar value
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @param {Number} scale the amount to scale b by before adding
+- * @returns {vec2} out
+- */
+-vec2.scaleAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    return out;
+-};
++    },
++    /**
++     * Set the map's minimum zoom level, and zooms map to that level if it is
++     * currently below it. If no parameter provided, unsets the current
++     * minimum zoom (sets it to 0)
++     *
++     * @param {number} minZoom Minimum zoom level. Must be between 0 and 20.
++     * @returns {Map} `this
++     */
++    setMinZoom: function(minZoom) {
+ 
+-/**
+- * Calculates the euclidian distance between two vec2's
+- *
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {Number} distance between a and b
+- */
+-vec2.distance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1];
+-    return Math.sqrt(x*x + y*y);
+-};
++        minZoom = minZoom === null || minZoom === undefined ? defaultMinZoom : minZoom;
+ 
+-/**
+- * Alias for {@link vec2.distance}
+- * @function
+- */
+-vec2.dist = vec2.distance;
++        if (minZoom >= defaultMinZoom && minZoom <= this.transform.maxZoom) {
++            this.transform.minZoom = minZoom;
++            this._update();
+ 
+-/**
+- * Calculates the squared euclidian distance between two vec2's
+- *
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {Number} squared distance between a and b
+- */
+-vec2.squaredDistance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1];
+-    return x*x + y*y;
+-};
++            if (this.getZoom() < minZoom) this.setZoom(minZoom);
+ 
+-/**
+- * Alias for {@link vec2.squaredDistance}
+- * @function
+- */
+-vec2.sqrDist = vec2.squaredDistance;
++            return this;
+ 
+-/**
+- * Calculates the length of a vec2
+- *
+- * @param {vec2} a vector to calculate length of
+- * @returns {Number} length of a
+- */
+-vec2.length = function (a) {
+-    var x = a[0],
+-        y = a[1];
+-    return Math.sqrt(x*x + y*y);
+-};
++        } else throw new Error('minZoom must be between ' + defaultMinZoom + ' and the current maxZoom, inclusive');
++    },
+ 
+-/**
+- * Alias for {@link vec2.length}
+- * @function
+- */
+-vec2.len = vec2.length;
++    /**
++     * Set the map's maximum zoom level, and zooms map to that level if it is
++     * currently above it. If no parameter provided, unsets the current
++     * maximum zoom (sets it to 20)
++     * @param {number} maxZoom Maximum zoom level. Must be between 0 and 20.
++     * @returns {Map} `this`
++     */
++    setMaxZoom: function(maxZoom) {
+ 
+-/**
+- * Calculates the squared length of a vec2
+- *
+- * @param {vec2} a vector to calculate squared length of
+- * @returns {Number} squared length of a
+- */
+-vec2.squaredLength = function (a) {
+-    var x = a[0],
+-        y = a[1];
+-    return x*x + y*y;
+-};
++        maxZoom = maxZoom === null || maxZoom === undefined ? defaultMaxZoom : maxZoom;
+ 
+-/**
+- * Alias for {@link vec2.squaredLength}
+- * @function
+- */
+-vec2.sqrLen = vec2.squaredLength;
++        if (maxZoom >= this.transform.minZoom && maxZoom <= defaultMaxZoom) {
++            this.transform.maxZoom = maxZoom;
++            this._update();
+ 
+-/**
+- * Negates the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to negate
+- * @returns {vec2} out
+- */
+-vec2.negate = function(out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    return out;
+-};
++            if (this.getZoom() > maxZoom) this.setZoom(maxZoom);
+ 
+-/**
+- * Returns the inverse of the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to invert
+- * @returns {vec2} out
+- */
+-vec2.inverse = function(out, a) {
+-  out[0] = 1.0 / a[0];
+-  out[1] = 1.0 / a[1];
+-  return out;
+-};
++            return this;
+ 
+-/**
+- * Normalize a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to normalize
+- * @returns {vec2} out
+- */
+-vec2.normalize = function(out, a) {
+-    var x = a[0],
+-        y = a[1];
+-    var len = x*x + y*y;
+-    if (len > 0) {
+-        //TODO: evaluate use of glm_invsqrt here?
+-        len = 1 / Math.sqrt(len);
+-        out[0] = a[0] * len;
+-        out[1] = a[1] * len;
+-    }
+-    return out;
+-};
++        } else throw new Error('maxZoom must be between the current minZoom and ' + defaultMaxZoom + ', inclusive');
++    },
++    /**
++     * Get pixel coordinates relative to the map container, given a geographical
++     * location.
++     *
++     * @param {LngLat} lnglat
++     * @returns {Object} `x` and `y` coordinates
++     */
++    project: function(lnglat) {
++        return this.transform.locationPoint(LngLat.convert(lnglat));
++    },
+ 
+-/**
+- * Calculates the dot product of two vec2's
+- *
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-vec2.dot = function (a, b) {
+-    return a[0] * b[0] + a[1] * b[1];
+-};
++    /**
++     * Get geographical coordinates, given pixel coordinates.
++     *
++     * @param {Array<number>} point [x, y] pixel coordinates
++     * @returns {LngLat}
++     */
++    unproject: function(point) {
++        return this.transform.pointLocation(Point.convert(point));
++    },
+ 
+-/**
+- * Computes the cross product of two vec2's
+- * Note that the cross product must by definition produce a 3D vector
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec3} out
+- */
+-vec2.cross = function(out, a, b) {
+-    var z = a[0] * b[1] - a[1] * b[0];
+-    out[0] = out[1] = 0;
+-    out[2] = z;
+-    return out;
+-};
++    /**
++     * Query rendered features within a point or rectangle.
++     *
++     * @param {Point|Array<number>|Array<Point>|Array<Array<number>>} [pointOrBox] Either [x, y] pixel coordinates of a point, or [[x1, y1], [x2, y2]] pixel coordinates of opposite corners of bounding rectangle. Optional: use entire viewport if omitted.
++     * @param {Object} params
++     * @param {Array<string>} [params.layers] Only query features from layers with these layer IDs.
++     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
++     *
++     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features
++     * matching the query parameters. The GeoJSON properties of each feature are taken from
++     * the original source. Each feature object also contains a top-level `layer`
++     * property whose value is an object representing the style layer to which the
++     * feature belongs. Layout and paint properties in this object contain values
++     * which are fully evaluated for the given zoom level and feature.
++     *
++     * @example
++     * var features = map.queryRenderedFeatures([20, 35], { layers: ['my-layer-name'] });
++     *
++     * @example
++     * var features = map.queryRenderedFeatures([[10, 20], [30, 50]], { layers: ['my-layer-name'] });
++     */
++    queryRenderedFeatures: function(pointOrBox, params) {
++        if (!(pointOrBox instanceof Point || Array.isArray(pointOrBox))) {
++            params = pointOrBox;
++            pointOrBox = undefined;
++        }
++        var queryGeometry = this._makeQueryGeometry(pointOrBox);
++        return this.style.queryRenderedFeatures(queryGeometry, params, this.transform.zoom, this.transform.angle);
++    },
+ 
+-/**
+- * Performs a linear interpolation between two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec2} out
+- */
+-vec2.lerp = function (out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1];
+-    out[0] = ax + t * (b[0] - ax);
+-    out[1] = ay + t * (b[1] - ay);
+-    return out;
+-};
++    _makeQueryGeometry: function(pointOrBox) {
++        if (pointOrBox === undefined) {
++            // bounds was omitted: use full viewport
++            pointOrBox = [
++                Point.convert([0, 0]),
++                Point.convert([this.transform.width, this.transform.height])
++            ];
++        }
+ 
+-/**
+- * Generates a random vector with the given scale
+- *
+- * @param {vec2} out the receiving vector
+- * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+- * @returns {vec2} out
+- */
+-vec2.random = function (out, scale) {
+-    scale = scale || 1.0;
+-    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
+-    out[0] = Math.cos(r) * scale;
+-    out[1] = Math.sin(r) * scale;
+-    return out;
+-};
++        var queryGeometry;
++        var isPoint = pointOrBox instanceof Point || typeof pointOrBox[0] === 'number';
+ 
+-/**
+- * Transforms the vec2 with a mat2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat2} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat2 = function(out, a, m) {
+-    var x = a[0],
+-        y = a[1];
+-    out[0] = m[0] * x + m[2] * y;
+-    out[1] = m[1] * x + m[3] * y;
+-    return out;
+-};
++        if (isPoint) {
++            var point = Point.convert(pointOrBox);
++            queryGeometry = [point];
++        } else {
++            var box = [Point.convert(pointOrBox[0]), Point.convert(pointOrBox[1])];
++            queryGeometry = [
++                box[0],
++                new Point(box[1].x, box[0].y),
++                box[1],
++                new Point(box[0].x, box[1].y),
++                box[0]
++            ];
++        }
+ 
+-/**
+- * Transforms the vec2 with a mat2d
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat2d} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat2d = function(out, a, m) {
+-    var x = a[0],
+-        y = a[1];
+-    out[0] = m[0] * x + m[2] * y + m[4];
+-    out[1] = m[1] * x + m[3] * y + m[5];
+-    return out;
+-};
++        queryGeometry = queryGeometry.map(function(p) {
++            return this.transform.pointCoordinate(p);
++        }.bind(this));
+ 
+-/**
+- * Transforms the vec2 with a mat3
+- * 3rd vector component is implicitly '1'
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat3} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat3 = function(out, a, m) {
+-    var x = a[0],
+-        y = a[1];
+-    out[0] = m[0] * x + m[3] * y + m[6];
+-    out[1] = m[1] * x + m[4] * y + m[7];
+-    return out;
+-};
++        return queryGeometry;
++    },
+ 
+-/**
+- * Transforms the vec2 with a mat4
+- * 3rd vector component is implicitly '0'
+- * 4th vector component is implicitly '1'
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat4 = function(out, a, m) {
+-    var x = a[0], 
+-        y = a[1];
+-    out[0] = m[0] * x + m[4] * y + m[12];
+-    out[1] = m[1] * x + m[5] * y + m[13];
+-    return out;
+-};
++    /**
++     * Get data from vector tiles as an array of GeoJSON Features.
++     *
++     * @param {string} sourceID source ID
++     * @param {Object} params
++     * @param {string} [params.sourceLayer] The name of the vector tile layer to get features from.
++     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
++     *
++     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features matching the query parameters. The GeoJSON properties of each feature are taken from the original source. Each feature object also contains a top-level `layer` property whose value is an object representing the style layer to which the feature belongs. Layout and paint properties in this object contain values which are fully evaluated for the given zoom level and feature.
++     */
++    querySourceFeatures: function(sourceID, params) {
++        return this.style.querySourceFeatures(sourceID, params);
++    },
+ 
+-/**
+- * Perform some operation over an array of vec2s.
+- *
+- * @param {Array} a the array of vectors to iterate over
+- * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed
+- * @param {Number} offset Number of elements to skip at the beginning of the array
+- * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
+- * @param {Function} fn Function to call for each vector in the array
+- * @param {Object} [arg] additional argument to pass to fn
+- * @returns {Array} a
+- * @function
+- */
+-vec2.forEach = (function() {
+-    var vec = vec2.create();
++    /**
++     * Replaces the map's style object with a new value. Unlike the `style`
++     * option in the Map constructor, this method only accepts an object
++     * of a new style, not a URL string.
++     *
++     * @param {Object} style A style object formatted as JSON
++     * @returns {Map} `this`
++     */
++    setStyle: function(style) {
++        if (this.style) {
++            this.style
++                .off('load', this._onStyleLoad)
++                .off('error', this._forwardStyleEvent)
++                .off('change', this._onStyleChange)
++                .off('source.add', this._onSourceAdd)
++                .off('source.remove', this._onSourceRemove)
++                .off('source.load', this._onSourceUpdate)
++                .off('source.error', this._forwardSourceEvent)
++                .off('source.change', this._onSourceUpdate)
++                .off('layer.add', this._forwardLayerEvent)
++                .off('layer.remove', this._forwardLayerEvent)
++                .off('layer.error', this._forwardLayerEvent)
++                .off('tile.add', this._forwardTileEvent)
++                .off('tile.remove', this._forwardTileEvent)
++                .off('tile.load', this._update)
++                .off('tile.error', this._forwardTileEvent)
++                .off('tile.stats', this._forwardTileEvent)
++                ._remove();
+ 
+-    return function(a, stride, offset, count, fn, arg) {
+-        var i, l;
+-        if(!stride) {
+-            stride = 2;
++            this.off('rotate', this.style._redoPlacement);
++            this.off('pitch', this.style._redoPlacement);
+         }
+ 
+-        if(!offset) {
+-            offset = 0;
+-        }
+-        
+-        if(count) {
+-            l = Math.min((count * stride) + offset, a.length);
++        if (!style) {
++            this.style = null;
++            return this;
++        } else if (style instanceof Style) {
++            this.style = style;
+         } else {
+-            l = a.length;
++            this.style = new Style(style, this.animationLoop);
+         }
+ 
+-        for(i = offset; i < l; i += stride) {
+-            vec[0] = a[i]; vec[1] = a[i+1];
+-            fn(vec, vec, arg);
+-            a[i] = vec[0]; a[i+1] = vec[1];
+-        }
+-        
+-        return a;
+-    };
+-})();
++        this.style
++            .on('load', this._onStyleLoad)
++            .on('error', this._forwardStyleEvent)
++            .on('change', this._onStyleChange)
++            .on('source.add', this._onSourceAdd)
++            .on('source.remove', this._onSourceRemove)
++            .on('source.load', this._onSourceUpdate)
++            .on('source.error', this._forwardSourceEvent)
++            .on('source.change', this._onSourceUpdate)
++            .on('layer.add', this._forwardLayerEvent)
++            .on('layer.remove', this._forwardLayerEvent)
++            .on('layer.error', this._forwardLayerEvent)
++            .on('tile.add', this._forwardTileEvent)
++            .on('tile.remove', this._forwardTileEvent)
++            .on('tile.load', this._update)
++            .on('tile.error', this._forwardTileEvent)
++            .on('tile.stats', this._forwardTileEvent);
+ 
+-/**
+- * Returns a string representation of a vector
+- *
+- * @param {vec2} vec vector to represent as a string
+- * @returns {String} string representation of the vector
+- */
+-vec2.str = function (a) {
+-    return 'vec2(' + a[0] + ', ' + a[1] + ')';
+-};
++        this.on('rotate', this.style._redoPlacement);
++        this.on('pitch', this.style._redoPlacement);
+ 
+-/**
+- * Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)
+- *
+- * @param {vec2} a The first vector.
+- * @param {vec2} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-vec2.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1];
+-};
++        return this;
++    },
+ 
+-/**
+- * Returns whether or not the vectors have approximately the same elements in the same position.
+- *
+- * @param {vec2} a The first vector.
+- * @param {vec2} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-vec2.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1];
+-    var b0 = b[0], b1 = b[1];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)));
+-};
++    /**
++     * Get a style object that can be used to recreate the map's style.
++     *
++     * @returns {Object} style
++     */
++    getStyle: function() {
++        return this.style.serialize();
++    },
+ 
+-module.exports = vec2;
++    /**
++     * Add a source to the map style.
++     *
++     * @param {string} id ID of the source. Must not be used by any existing source.
++     * @param {Object} source source specification, following the
++     * [Mapbox GL Style Reference](https://www.mapbox.com/mapbox-gl-style-spec/#sources)
++     * @fires source.add
++     * @returns {Map} `this`
++     */
++    addSource: function(id, source) {
++        this.style.addSource(id, source);
++        this._update(true);
++        return this;
++    },
+ 
+-},{"./common.js":134}],141:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++    /**
++     * Remove an existing source from the map style.
++     *
++     * @param {string} id ID of the source to remove
++     * @fires source.remove
++     * @returns {Map} `this`
++     */
++    removeSource: function(id) {
++        this.style.removeSource(id);
++        this._update(true);
++        return this;
++    },
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    /**
++     * Return the style source object with the given `id`.
++     *
++     * @param {string} id source ID
++     * @returns {Object}
++     */
++    getSource: function(id) {
++        return this.style.getSource(id);
++    },
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    /**
++     * Add a layer to the map style. The layer will be inserted before the layer with
++     * ID `before`, or appended if `before` is omitted.
++     * @param {StyleLayer|Object} layer
++     * @param {string=} before  ID of an existing layer to insert before
++     * @fires layer.add
++     * @returns {Map} `this`
++     */
++    addLayer: function(layer, before) {
++        this.style.addLayer(layer, before);
++        this._update(true);
++        return this;
++    },
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    /**
++     * Remove the layer with the given `id` from the map. Any layers which refer to the
++     * specified layer via a `ref` property are also removed.
++     *
++     * @param {string} id layer id
++     * @throws {Error} if no layer with the given `id` exists
++     * @fires layer.remove
++     * @returns {Map} `this`
++     */
++    removeLayer: function(id) {
++        this.style.removeLayer(id);
++        this._update(true);
++        return this;
++    },
+ 
+-var glMatrix = require("./common.js");
++    /**
++     * Return the style layer object with the given `id`.
++     *
++     * @param {string} id layer id
++     * @returns {?Object} a layer, if one with the given `id` exists
++     */
++    getLayer: function(id) {
++        return this.style.getLayer(id);
++    },
+ 
+-/**
+- * @class 3 Dimensional Vector
+- * @name vec3
+- */
+-var vec3 = {};
++    /**
++     * Set the filter for a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {Array} filter filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#types-filter)
++     * @returns {Map} `this`
++     * @example
++     * map.setFilter('my-layer', ['==', 'name', 'USA']);
++     */
++    setFilter: function(layer, filter) {
++        this.style.setFilter(layer, filter);
++        this._update(true);
++        return this;
++    },
+ 
+-/**
+- * Creates a new, empty vec3
+- *
+- * @returns {vec3} a new 3D vector
+- */
+-vec3.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(3);
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    return out;
+-};
++    /**
++     * Set the zoom extent for a given style layer.
++     *
++     * @param {string} layerId ID of a layer
++     * @param {number} minzoom minimum zoom extent
++     * @param {number} maxzoom maximum zoom extent
++     * @returns {Map} `this`
++     * @example
++     * map.setLayerZoomRange('my-layer', 2, 5);
++     */
++    setLayerZoomRange: function(layerId, minzoom, maxzoom) {
++        this.style.setLayerZoomRange(layerId, minzoom, maxzoom);
++        this._update(true);
++        return this;
++    },
+ 
+-/**
+- * Creates a new vec3 initialized with values from an existing vector
+- *
+- * @param {vec3} a vector to clone
+- * @returns {vec3} a new 3D vector
+- */
+-vec3.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(3);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    return out;
+-};
++    /**
++     * Get the filter for a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @returns {Array} filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#filter)
++     */
++    getFilter: function(layer) {
++        return this.style.getFilter(layer);
++    },
+ 
+-/**
+- * Creates a new vec3 initialized with the given values
+- *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @returns {vec3} a new 3D vector
+- */
+-vec3.fromValues = function(x, y, z) {
+-    var out = new glMatrix.ARRAY_TYPE(3);
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    return out;
+-};
++    /**
++     * Set the value of a paint property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a paint property
++     * @param {*} value value for the paint propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
++     * @param {string=} klass optional class specifier for the property
++     * @returns {Map} `this`
++     * @example
++     * map.setPaintProperty('my-layer', 'fill-color', '#faafee');
++     */
++    setPaintProperty: function(layer, name, value, klass) {
++        this.style.setPaintProperty(layer, name, value, klass);
++        this._update(true);
++        return this;
++    },
+ 
+-/**
+- * Copy the values from one vec3 to another
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the source vector
+- * @returns {vec3} out
+- */
+-vec3.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    return out;
+-};
++    /**
++     * Get the value of a paint property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a paint property
++     * @param {string=} klass optional class specifier for the property
++     * @returns {*} value for the paint propery
++     */
++    getPaintProperty: function(layer, name, klass) {
++        return this.style.getPaintProperty(layer, name, klass);
++    },
+ 
+-/**
+- * Set the components of a vec3 to the given values
+- *
+- * @param {vec3} out the receiving vector
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @returns {vec3} out
+- */
+-vec3.set = function(out, x, y, z) {
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    return out;
+-};
++    /**
++     * Set the value of a layout property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a layout property
++     * @param {*} value value for the layout propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
++     * @returns {Map} `this`
++     * @example
++     * map.setLayoutProperty('my-layer', 'visibility', 'none');
++     */
++    setLayoutProperty: function(layer, name, value) {
++        this.style.setLayoutProperty(layer, name, value);
++        this._update(true);
++        return this;
++    },
+ 
+-/**
+- * Adds two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    return out;
+-};
++    /**
++     * Get the value of a layout property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a layout property
++     * @param {string=} klass optional class specifier for the property
++     * @returns {*} value for the layout propery
++     */
++    getLayoutProperty: function(layer, name) {
++        return this.style.getLayoutProperty(layer, name);
++    },
+ 
+-/**
+- * Subtracts vector b from vector a
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    return out;
+-};
++    /**
++     * Get the Map's container as an HTML element
++     * @returns {HTMLElement} container
++     */
++    getContainer: function() {
++        return this._container;
++    },
+ 
+-/**
+- * Alias for {@link vec3.subtract}
+- * @function
+- */
+-vec3.sub = vec3.subtract;
++    /**
++     * Get the container for the map `canvas` element.
++     *
++     * If you want to add non-GL overlays to the map, you should append them to this element. This
++     * is the element to which event bindings for map interactivity such as panning and zooming are
++     * attached. It will receive bubbled events for child elements such as the `canvas`, but not for
++     * map controls.
++     *
++     * @returns {HTMLElement} container
++     */
++    getCanvasContainer: function() {
++        return this._canvasContainer;
++    },
+ 
+-/**
+- * Multiplies two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.multiply = function(out, a, b) {
+-    out[0] = a[0] * b[0];
+-    out[1] = a[1] * b[1];
+-    out[2] = a[2] * b[2];
+-    return out;
+-};
++    /**
++     * Get the Map's canvas as an HTML canvas
++     * @returns {HTMLElement} canvas
++     */
++    getCanvas: function() {
++        return this._canvas.getElement();
++    },
+ 
+-/**
+- * Alias for {@link vec3.multiply}
+- * @function
+- */
+-vec3.mul = vec3.multiply;
++    _setupContainer: function() {
++        var container = this._container;
++        container.classList.add('mapboxgl-map');
+ 
+-/**
+- * Divides two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.divide = function(out, a, b) {
+-    out[0] = a[0] / b[0];
+-    out[1] = a[1] / b[1];
+-    out[2] = a[2] / b[2];
+-    return out;
+-};
++        var canvasContainer = this._canvasContainer = DOM.create('div', 'mapboxgl-canvas-container', container);
++        if (this._interactive) {
++            canvasContainer.classList.add('mapboxgl-interactive');
++        }
++        this._canvas = new Canvas(this, canvasContainer);
+ 
+-/**
+- * Alias for {@link vec3.divide}
+- * @function
+- */
+-vec3.div = vec3.divide;
++        var controlContainer = this._controlContainer = DOM.create('div', 'mapboxgl-control-container', container);
++        var corners = this._controlCorners = {};
++        ['top-left', 'top-right', 'bottom-left', 'bottom-right'].forEach(function (pos) {
++            corners[pos] = DOM.create('div', 'mapboxgl-ctrl-' + pos, controlContainer);
++        });
++    },
++
++    _setupPainter: function() {
++        var gl = this._canvas.getWebGLContext({
++            failIfMajorPerformanceCaveat: this._failIfMajorPerformanceCaveat,
++            preserveDrawingBuffer: this._preserveDrawingBuffer
++        });
++
++        if (!gl) {
++            console.error('Failed to initialize WebGL');
++            return;
++        }
++
++        this.painter = new Painter(gl, this.transform);
++    },
++
++    /**
++     * WebGL Context Lost event.
++     *
++     * @event webglcontextlost
++     * @memberof Map
++     * @instance
++     * @type {Object}
++     * @property {Event} originalEvent the original DOM event
++     */
++    _contextLost: function(event) {
++        event.preventDefault();
++        if (this._frameId) {
++            browser.cancelFrame(this._frameId);
++        }
++        this.fire("webglcontextlost", {originalEvent: event});
++    },
++
++    /**
++     * WebGL Context Restored event.
++     *
++     * @event webglcontextrestored
++     * @memberof Map
++     * @instance
++     * @type {Object}
++     */
++    _contextRestored: function(event) {
++        this._setupPainter();
++        this.resize();
++        this._update();
++        this.fire("webglcontextrestored", {originalEvent: event});
++    },
++
++    /**
++     * Is this map fully loaded? If the style isn't loaded
++     * or it has a change to the sources or style that isn't
++     * propagated to its style, return false.
++     *
++     * @returns {boolean} whether the map is loaded
++     */
++    loaded: function() {
++        if (this._styleDirty || this._sourcesDirty)
++            return false;
++        if (!this.style || !this.style.loaded())
++            return false;
++        return true;
++    },
+ 
+-/**
+- * Math.ceil the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to ceil
+- * @returns {vec3} out
+- */
+-vec3.ceil = function (out, a) {
+-    out[0] = Math.ceil(a[0]);
+-    out[1] = Math.ceil(a[1]);
+-    out[2] = Math.ceil(a[2]);
+-    return out;
+-};
++    /**
++     * Update this map's style and sources, and re-render the map.
++     *
++     * @param {boolean} updateStyle mark the map's style for reprocessing as
++     * well as its sources
++     * @returns {Map} this
++     * @private
++     */
++    _update: function(updateStyle) {
++        if (!this.style) return this;
+ 
+-/**
+- * Math.floor the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to floor
+- * @returns {vec3} out
+- */
+-vec3.floor = function (out, a) {
+-    out[0] = Math.floor(a[0]);
+-    out[1] = Math.floor(a[1]);
+-    out[2] = Math.floor(a[2]);
+-    return out;
+-};
++        this._styleDirty = this._styleDirty || updateStyle;
++        this._sourcesDirty = true;
+ 
+-/**
+- * Returns the minimum of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.min = function(out, a, b) {
+-    out[0] = Math.min(a[0], b[0]);
+-    out[1] = Math.min(a[1], b[1]);
+-    out[2] = Math.min(a[2], b[2]);
+-    return out;
+-};
++        this._rerender();
+ 
+-/**
+- * Returns the maximum of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.max = function(out, a, b) {
+-    out[0] = Math.max(a[0], b[0]);
+-    out[1] = Math.max(a[1], b[1]);
+-    out[2] = Math.max(a[2], b[2]);
+-    return out;
+-};
++        return this;
++    },
+ 
+-/**
+- * Math.round the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to round
+- * @returns {vec3} out
+- */
+-vec3.round = function (out, a) {
+-    out[0] = Math.round(a[0]);
+-    out[1] = Math.round(a[1]);
+-    out[2] = Math.round(a[2]);
+-    return out;
+-};
++    /**
++     * Call when a (re-)render of the map is required, e.g. when the
++     * user panned or zoomed,f or new data is available.
++     * @returns {Map} this
++     * @private
++     */
++    _render: function() {
++        if (this.style && this._styleDirty) {
++            this._styleDirty = false;
++            this.style.update(this._classes, this._classOptions);
++            this._classOptions = null;
++            this.style._recalculate(this.transform.zoom);
++        }
+ 
+-/**
+- * Scales a vec3 by a scalar number
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {vec3} out
+- */
+-vec3.scale = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    return out;
+-};
++        if (this.style && this._sourcesDirty) {
++            this._sourcesDirty = false;
++            this.style._updateSources(this.transform);
++        }
+ 
+-/**
+- * Adds two vec3's after scaling the second operand by a scalar value
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {Number} scale the amount to scale b by before adding
+- * @returns {vec3} out
+- */
+-vec3.scaleAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    return out;
+-};
++        this.painter.render(this.style, {
++            debug: this.showTileBoundaries,
++            showOverdrawInspector: this._showOverdrawInspector,
++            vertices: this.vertices,
++            rotating: this.rotating,
++            zooming: this.zooming
++        });
+ 
+-/**
+- * Calculates the euclidian distance between two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} distance between a and b
+- */
+-vec3.distance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2];
+-    return Math.sqrt(x*x + y*y + z*z);
+-};
++        this.fire('render');
+ 
+-/**
+- * Alias for {@link vec3.distance}
+- * @function
+- */
+-vec3.dist = vec3.distance;
++        if (this.loaded() && !this._loaded) {
++            this._loaded = true;
++            this.fire('load');
++        }
+ 
+-/**
+- * Calculates the squared euclidian distance between two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} squared distance between a and b
+- */
+-vec3.squaredDistance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2];
+-    return x*x + y*y + z*z;
+-};
++        this._frameId = null;
+ 
+-/**
+- * Alias for {@link vec3.squaredDistance}
+- * @function
+- */
+-vec3.sqrDist = vec3.squaredDistance;
++        if (!this.animationLoop.stopped()) {
++            this._styleDirty = true;
++        }
+ 
+-/**
+- * Calculates the length of a vec3
+- *
+- * @param {vec3} a vector to calculate length of
+- * @returns {Number} length of a
+- */
+-vec3.length = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2];
+-    return Math.sqrt(x*x + y*y + z*z);
+-};
++        if (this._sourcesDirty || this._repaint || !this.animationLoop.stopped()) {
++            this._rerender();
++        }
+ 
+-/**
+- * Alias for {@link vec3.length}
+- * @function
+- */
+-vec3.len = vec3.length;
++        return this;
++    },
+ 
+-/**
+- * Calculates the squared length of a vec3
+- *
+- * @param {vec3} a vector to calculate squared length of
+- * @returns {Number} squared length of a
+- */
+-vec3.squaredLength = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2];
+-    return x*x + y*y + z*z;
+-};
++    /**
++     * Destroys the map's underlying resources, including web workers and DOM elements. Afterwards,
++     * you must not call any further methods on this Map instance.
++     *
++     * @returns {undefined}
++     */
++    remove: function() {
++        if (this._hash) this._hash.remove();
++        browser.cancelFrame(this._frameId);
++        this.setStyle(null);
++        if (typeof window !== 'undefined') {
++            window.removeEventListener('resize', this._onWindowResize, false);
++        }
++        removeNode(this._canvasContainer);
++        removeNode(this._controlContainer);
++        this._container.classList.remove('mapboxgl-map');
++    },
+ 
+-/**
+- * Alias for {@link vec3.squaredLength}
+- * @function
+- */
+-vec3.sqrLen = vec3.squaredLength;
++    /**
++     * A default error handler for `style.error`, `source.error`, `layer.error`,
++     * and `tile.error` events.
++     * It logs the error via `console.error`.
++     *
++     * @example
++     * // Disable the default error handler
++     * map.off('style.error', map.onError);
++     * map.off('source.error', map.onError);
++     * map.off('tile.error', map.onError);
++     * map.off('layer.error', map.onError);
++     */
++    onError: function(e) {
++        console.error(e.error);
++    },
+ 
+-/**
+- * Negates the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to negate
+- * @returns {vec3} out
+- */
+-vec3.negate = function(out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    return out;
+-};
++    _rerender: function() {
++        if (this.style && !this._frameId) {
++            this._frameId = browser.frame(this._render);
++        }
++    },
+ 
+-/**
+- * Returns the inverse of the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to invert
+- * @returns {vec3} out
+- */
+-vec3.inverse = function(out, a) {
+-  out[0] = 1.0 / a[0];
+-  out[1] = 1.0 / a[1];
+-  out[2] = 1.0 / a[2];
+-  return out;
+-};
++    _forwardStyleEvent: function(e) {
++        this.fire('style.' + e.type, util.extend({style: e.target}, e));
++    },
+ 
+-/**
+- * Normalize a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to normalize
+- * @returns {vec3} out
+- */
+-vec3.normalize = function(out, a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2];
+-    var len = x*x + y*y + z*z;
+-    if (len > 0) {
+-        //TODO: evaluate use of glm_invsqrt here?
+-        len = 1 / Math.sqrt(len);
+-        out[0] = a[0] * len;
+-        out[1] = a[1] * len;
+-        out[2] = a[2] * len;
+-    }
+-    return out;
+-};
++    _forwardSourceEvent: function(e) {
++        this.fire(e.type, util.extend({style: e.target}, e));
++    },
+ 
+-/**
+- * Calculates the dot product of two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-vec3.dot = function (a, b) {
+-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+-};
++    _forwardLayerEvent: function(e) {
++        this.fire(e.type, util.extend({style: e.target}, e));
++    },
+ 
+-/**
+- * Computes the cross product of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.cross = function(out, a, b) {
+-    var ax = a[0], ay = a[1], az = a[2],
+-        bx = b[0], by = b[1], bz = b[2];
++    _forwardTileEvent: function(e) {
++        this.fire(e.type, util.extend({style: e.target}, e));
++    },
+ 
+-    out[0] = ay * bz - az * by;
+-    out[1] = az * bx - ax * bz;
+-    out[2] = ax * by - ay * bx;
+-    return out;
+-};
++    _onStyleLoad: function(e) {
++        if (this.transform.unmodified) {
++            this.jumpTo(this.style.stylesheet);
++        }
++        this.style.update(this._classes, {transition: false});
++        this._forwardStyleEvent(e);
++    },
+ 
+-/**
+- * Performs a linear interpolation between two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
+- */
+-vec3.lerp = function (out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1],
+-        az = a[2];
+-    out[0] = ax + t * (b[0] - ax);
+-    out[1] = ay + t * (b[1] - ay);
+-    out[2] = az + t * (b[2] - az);
+-    return out;
+-};
++    _onStyleChange: function(e) {
++        this._update(true);
++        this._forwardStyleEvent(e);
++    },
+ 
+-/**
+- * Performs a hermite interpolation with two control points
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {vec3} c the third operand
+- * @param {vec3} d the fourth operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
+- */
+-vec3.hermite = function (out, a, b, c, d, t) {
+-  var factorTimes2 = t * t,
+-      factor1 = factorTimes2 * (2 * t - 3) + 1,
+-      factor2 = factorTimes2 * (t - 2) + t,
+-      factor3 = factorTimes2 * (t - 1),
+-      factor4 = factorTimes2 * (3 - 2 * t);
+-  
+-  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
+-  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
+-  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
+-  
+-  return out;
+-};
++    _onSourceAdd: function(e) {
++        var source = e.source;
++        if (source.onAdd)
++            source.onAdd(this);
++        this._forwardSourceEvent(e);
++    },
+ 
+-/**
+- * Performs a bezier interpolation with two control points
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {vec3} c the third operand
+- * @param {vec3} d the fourth operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
+- */
+-vec3.bezier = function (out, a, b, c, d, t) {
+-  var inverseFactor = 1 - t,
+-      inverseFactorTimesTwo = inverseFactor * inverseFactor,
+-      factorTimes2 = t * t,
+-      factor1 = inverseFactorTimesTwo * inverseFactor,
+-      factor2 = 3 * t * inverseFactorTimesTwo,
+-      factor3 = 3 * factorTimes2 * inverseFactor,
+-      factor4 = factorTimes2 * t;
+-  
+-  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
+-  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
+-  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
+-  
+-  return out;
+-};
++    _onSourceRemove: function(e) {
++        var source = e.source;
++        if (source.onRemove)
++            source.onRemove(this);
++        this._forwardSourceEvent(e);
++    },
+ 
+-/**
+- * Generates a random vector with the given scale
+- *
+- * @param {vec3} out the receiving vector
+- * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+- * @returns {vec3} out
+- */
+-vec3.random = function (out, scale) {
+-    scale = scale || 1.0;
++    _onSourceUpdate: function(e) {
++        this._update();
++        this._forwardSourceEvent(e);
++    },
+ 
+-    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
+-    var z = (glMatrix.RANDOM() * 2.0) - 1.0;
+-    var zScale = Math.sqrt(1.0-z*z) * scale;
++    _onWindowResize: function() {
++        this.stop().resize()._update();
++    }
++});
+ 
+-    out[0] = Math.cos(r) * zScale;
+-    out[1] = Math.sin(r) * zScale;
+-    out[2] = z * scale;
+-    return out;
+-};
++util.extendAll(Map.prototype, /** @lends Map.prototype */{
+ 
+-/**
+- * Transforms the vec3 with a mat4.
+- * 4th vector component is implicitly '1'
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec3} out
+- */
+-vec3.transformMat4 = function(out, a, m) {
+-    var x = a[0], y = a[1], z = a[2],
+-        w = m[3] * x + m[7] * y + m[11] * z + m[15];
+-    w = w || 1.0;
+-    out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w;
+-    out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w;
+-    out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w;
+-    return out;
+-};
++    /**
++     * Draw an outline around each rendered tile for debugging.
++     *
++     * @name showTileBoundaries
++     * @type {boolean}
++     */
++    _showTileBoundaries: false,
++    get showTileBoundaries() { return this._showTileBoundaries; },
++    set showTileBoundaries(value) {
++        if (this._showTileBoundaries === value) return;
++        this._showTileBoundaries = value;
++        this._update();
++    },
+ 
+-/**
+- * Transforms the vec3 with a mat3.
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to transform
+- * @param {mat4} m the 3x3 matrix to transform with
+- * @returns {vec3} out
+- */
+-vec3.transformMat3 = function(out, a, m) {
+-    var x = a[0], y = a[1], z = a[2];
+-    out[0] = x * m[0] + y * m[3] + z * m[6];
+-    out[1] = x * m[1] + y * m[4] + z * m[7];
+-    out[2] = x * m[2] + y * m[5] + z * m[8];
+-    return out;
+-};
++    /**
++     * Draw boxes around all symbols in the data source, showing which were
++     * rendered and which were hidden due to collisions with other symbols for
++     * style debugging.
++     *
++     * @name showCollisionBoxes
++     * @type {boolean}
++     */
++    _showCollisionBoxes: false,
++    get showCollisionBoxes() { return this._showCollisionBoxes; },
++    set showCollisionBoxes(value) {
++        if (this._showCollisionBoxes === value) return;
++        this._showCollisionBoxes = value;
++        this.style._redoPlacement();
++    },
+ 
+-/**
+- * Transforms the vec3 with a quat
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to transform
+- * @param {quat} q quaternion to transform with
+- * @returns {vec3} out
+- */
+-vec3.transformQuat = function(out, a, q) {
+-    // benchmarks: http://jsperf.com/quaternion-transform-vec3-implementations
++    /*
++     * Show how many times each fragment has been shaded. White fragments have
++     * been shaded 8 or more times. Black fragments have been shaded 0 times.
++     *
++     * @name showOverdraw
++     * @type {boolean}
++     */
++    _showOverdrawInspector: false,
++    get showOverdrawInspector() { return this._showOverdrawInspector; },
++    set showOverdrawInspector(value) {
++        if (this._showOverdrawInspector === value) return;
++        this._showOverdrawInspector = value;
++        this._update();
++    },
+ 
+-    var x = a[0], y = a[1], z = a[2],
+-        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
++    /**
++     * Enable continuous repaint to analyze performance.
++     *
++     * @name repaint
++     * @type {boolean}
++     */
++    _repaint: false,
++    get repaint() { return this._repaint; },
++    set repaint(value) { this._repaint = value; this._update(); },
+ 
+-        // calculate quat * vec
+-        ix = qw * x + qy * z - qz * y,
+-        iy = qw * y + qz * x - qx * z,
+-        iz = qw * z + qx * y - qy * x,
+-        iw = -qx * x - qy * y - qz * z;
++    // show vertices
++    _vertices: false,
++    get vertices() { return this._vertices; },
++    set vertices(value) { this._vertices = value; this._update(); }
++});
+ 
+-    // calculate result * inverse quat
+-    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+-    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+-    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+-    return out;
+-};
++function removeNode(node) {
++    if (node.parentNode) {
++        node.parentNode.removeChild(node);
++    }
++}
+ 
+ /**
+- * Rotate a 3D vector around the x-axis
+- * @param {vec3} out The receiving vec3
+- * @param {vec3} a The vec3 point to rotate
+- * @param {vec3} b The origin of the rotation
+- * @param {Number} c The angle of rotation
+- * @returns {vec3} out
++ * Options common to Map#addClass, Map#removeClass, and Map#setClasses, controlling
++ * whether or not to smoothly transition property changes triggered by the class change.
++ *
++ * @typedef {Object} StyleOptions
++ * @property {boolean} transition
+  */
+-vec3.rotateX = function(out, a, b, c){
+-   var p = [], r=[];
+-	  //Translate point to the origin
+-	  p[0] = a[0] - b[0];
+-	  p[1] = a[1] - b[1];
+-  	p[2] = a[2] - b[2];
+ 
+-	  //perform rotation
+-	  r[0] = p[0];
+-	  r[1] = p[1]*Math.cos(c) - p[2]*Math.sin(c);
+-	  r[2] = p[1]*Math.sin(c) + p[2]*Math.cos(c);
++ /**
++  * This event is fired whenever the map is drawn to the screen because of
++  *
++  *  - a change in map position, zoom, pitch, or bearing
++  *  - a change to the map style
++  *  - a change to a GeoJSON source
++  *  - a vector tile, GeoJSON file, glyph, or sprite being loaded
++  *
++  * @event render
++  * @memberof Map
++  * @instance
++  */
+ 
+-	  //translate to correct position
+-	  out[0] = r[0] + b[0];
+-	  out[1] = r[1] + b[1];
+-	  out[2] = r[2] + b[2];
++},{"../geo/lng_lat":76,"../geo/lng_lat_bounds":77,"../geo/transform":78,"../render/painter":91,"../style/animation_loop":107,"../style/style":110,"../util/browser":155,"../util/canvas":156,"../util/dom":158,"../util/evented":161,"../util/util":169,"./camera":137,"./control/attribution":138,"./hash":149,"./interaction":150,"point-geometry":174}],152:[function(require,module,exports){
++'use strict';
+ 
+-  	return out;
+-};
++module.exports = Popup;
+ 
+-/**
+- * Rotate a 3D vector around the y-axis
+- * @param {vec3} out The receiving vec3
+- * @param {vec3} a The vec3 point to rotate
+- * @param {vec3} b The origin of the rotation
+- * @param {Number} c The angle of rotation
+- * @returns {vec3} out
+- */
+-vec3.rotateY = function(out, a, b, c){
+-  	var p = [], r=[];
+-  	//Translate point to the origin
+-  	p[0] = a[0] - b[0];
+-  	p[1] = a[1] - b[1];
+-  	p[2] = a[2] - b[2];
+-  
+-  	//perform rotation
+-  	r[0] = p[2]*Math.sin(c) + p[0]*Math.cos(c);
+-  	r[1] = p[1];
+-  	r[2] = p[2]*Math.cos(c) - p[0]*Math.sin(c);
+-  
+-  	//translate to correct position
+-  	out[0] = r[0] + b[0];
+-  	out[1] = r[1] + b[1];
+-  	out[2] = r[2] + b[2];
+-  
+-  	return out;
+-};
++var util = require('../util/util');
++var Evented = require('../util/evented');
++var DOM = require('../util/dom');
++var LngLat = require('../geo/lng_lat');
+ 
+ /**
+- * Rotate a 3D vector around the z-axis
+- * @param {vec3} out The receiving vec3
+- * @param {vec3} a The vec3 point to rotate
+- * @param {vec3} b The origin of the rotation
+- * @param {Number} c The angle of rotation
+- * @returns {vec3} out
++ * Creates a popup component
++ * @class Popup
++ * @param {Object} options
++ * @param {boolean} options.closeButton whether to show a close button in the
++ * top right corner of the popup.
++ * @param {boolean} options.closeOnClick whether to close the popup when the
++ * map is clicked.
++ * @param {string} options.anchor - One of "top", "bottom", "left", "right", "top-left",
++ * "top-right", "bottom-left", or "bottom-right", describing where the popup's anchor
++ * relative to the coordinate set via `setLngLat`.
++ * @example
++ * var tooltip = new mapboxgl.Popup()
++ *   .setLngLat(e.lngLat)
++ *   .setHTML("<h1>Hello World!</h1>")
++ *   .addTo(map);
+  */
+-vec3.rotateZ = function(out, a, b, c){
+-  	var p = [], r=[];
+-  	//Translate point to the origin
+-  	p[0] = a[0] - b[0];
+-  	p[1] = a[1] - b[1];
+-  	p[2] = a[2] - b[2];
+-  
+-  	//perform rotation
+-  	r[0] = p[0]*Math.cos(c) - p[1]*Math.sin(c);
+-  	r[1] = p[0]*Math.sin(c) + p[1]*Math.cos(c);
+-  	r[2] = p[2];
+-  
+-  	//translate to correct position
+-  	out[0] = r[0] + b[0];
+-  	out[1] = r[1] + b[1];
+-  	out[2] = r[2] + b[2];
+-  
+-  	return out;
+-};
++function Popup(options) {
++    util.setOptions(this, options);
++    util.bindAll([
++        '_update',
++        '_onClickClose'],
++        this);
++}
+ 
+-/**
+- * Perform some operation over an array of vec3s.
+- *
+- * @param {Array} a the array of vectors to iterate over
+- * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed
+- * @param {Number} offset Number of elements to skip at the beginning of the array
+- * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array
+- * @param {Function} fn Function to call for each vector in the array
+- * @param {Object} [arg] additional argument to pass to fn
+- * @returns {Array} a
+- * @function
+- */
+-vec3.forEach = (function() {
+-    var vec = vec3.create();
++Popup.prototype = util.inherit(Evented, /** @lends Popup.prototype */{
++    options: {
++        closeButton: true,
++        closeOnClick: true
++    },
+ 
+-    return function(a, stride, offset, count, fn, arg) {
+-        var i, l;
+-        if(!stride) {
+-            stride = 3;
++    /**
++     * Attaches the popup to a map
++     * @param {Map} map
++     * @returns {Popup} `this`
++     */
++    addTo: function(map) {
++        this._map = map;
++        this._map.on('move', this._update);
++        if (this.options.closeOnClick) {
++            this._map.on('click', this._onClickClose);
+         }
++        this._update();
++        return this;
++    },
+ 
+-        if(!offset) {
+-            offset = 0;
+-        }
+-        
+-        if(count) {
+-            l = Math.min((count * stride) + offset, a.length);
+-        } else {
+-            l = a.length;
++    /**
++     * Removes the popup from a map
++     * @example
++     * var popup = new mapboxgl.Popup().addTo(map);
++     * popup.remove();
++     * @returns {Popup} `this`
++     */
++    remove: function() {
++        if (this._content && this._content.parentNode) {
++            this._content.parentNode.removeChild(this._content);
+         }
+ 
+-        for(i = offset; i < l; i += stride) {
+-            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2];
+-            fn(vec, vec, arg);
+-            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2];
++        if (this._container) {
++            this._container.parentNode.removeChild(this._container);
++            delete this._container;
+         }
+-        
+-        return a;
+-    };
+-})();
+ 
+-/**
+- * Get the angle between two 3D vectors
+- * @param {vec3} a The first operand
+- * @param {vec3} b The second operand
+- * @returns {Number} The angle in radians
+- */
+-vec3.angle = function(a, b) {
+-   
+-    var tempA = vec3.fromValues(a[0], a[1], a[2]);
+-    var tempB = vec3.fromValues(b[0], b[1], b[2]);
+- 
+-    vec3.normalize(tempA, tempA);
+-    vec3.normalize(tempB, tempB);
+- 
+-    var cosine = vec3.dot(tempA, tempB);
++        if (this._map) {
++            this._map.off('move', this._update);
++            this._map.off('click', this._onClickClose);
++            delete this._map;
++        }
+ 
+-    if(cosine > 1.0){
+-        return 0;
+-    } else {
+-        return Math.acos(cosine);
+-    }     
+-};
++        return this;
++    },
+ 
+-/**
+- * Returns a string representation of a vector
+- *
+- * @param {vec3} vec vector to represent as a string
+- * @returns {String} string representation of the vector
+- */
+-vec3.str = function (a) {
+-    return 'vec3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ')';
+-};
++    /**
++     * Get the popup's geographical location
++     * @returns {LngLat}
++     */
++    getLngLat: function() {
++        return this._lngLat;
++    },
+ 
+-/**
+- * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {vec3} a The first vector.
+- * @param {vec3} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-vec3.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2];
+-};
++    /**
++     * Set the popup's geographical position and move it.
++     * @param {LngLat} lnglat
++     * @returns {Popup} `this`
++     */
++    setLngLat: function(lnglat) {
++        this._lngLat = LngLat.convert(lnglat);
++        this._update();
++        return this;
++    },
+ 
+-/**
+- * Returns whether or not the vectors have approximately the same elements in the same position.
+- *
+- * @param {vec3} a The first vector.
+- * @param {vec3} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-vec3.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2];
+-    var b0 = b[0], b1 = b[1], b2 = b[2];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)));
+-};
++    /**
++     * Fill a popup element with text only content. This creates a text node
++     * in the DOM, so it cannot end up appending raw HTML. Use this method
++     * if you want an added level of security against XSS if the popup
++     * content is user-provided.
++     * @param {string} text
++     * @returns {Popup} `this`
++     * @example
++     * var tooltip = new mapboxgl.Popup()
++     *   .setLngLat(e.lngLat)
++     *   .setText('Hello, world!')
++     *   .addTo(map);
++     */
++    setText: function(text) {
++        return this.setDOMContent(document.createTextNode(text));
++    },
+ 
+-module.exports = vec3;
++    /**
++     * Fill a popup element with HTML content, provided as a string.
++     * @param {string} html
++     * @returns {Popup} `this`
++     */
++    setHTML: function(html) {
++        var frag = document.createDocumentFragment();
++        var temp = document.createElement('body'), child;
++        temp.innerHTML = html;
++        while (true) {
++            child = temp.firstChild;
++            if (!child) break;
++            frag.appendChild(child);
++        }
+ 
+-},{"./common.js":134}],142:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++        return this.setDOMContent(frag);
++    },
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    /**
++     * Fill a popup element with DOM content
++     * @param {Node} htmlNode Popup content as a DOM node
++     * @returns {Popup} `this`
++     * @example
++     * // create an element with the popup content
++     * var div = document.createElement('div');
++     * div.innerHTML = 'Hello, world!';
++     * var tooltip = new mapboxgl.Popup()
++     *   .setLngLat(e.lngLat)
++     *   .setDOMContent(div)
++     *   .addTo(map);
++     */
++    setDOMContent: function(htmlNode) {
++        this._createContent();
++        this._content.appendChild(htmlNode);
++        this._update();
++        return this;
++    },
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    _createContent: function() {
++        if (this._content && this._content.parentNode) {
++            this._content.parentNode.removeChild(this._content);
++        }
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++        this._content = DOM.create('div', 'mapboxgl-popup-content', this._container);
+ 
+-var glMatrix = require("./common.js");
++        if (this.options.closeButton) {
++            this._closeButton = DOM.create('button', 'mapboxgl-popup-close-button', this._content);
++            this._closeButton.innerHTML = '&#215;';
++            this._closeButton.addEventListener('click', this._onClickClose);
++        }
++    },
+ 
+-/**
+- * @class 4 Dimensional Vector
+- * @name vec4
+- */
+-var vec4 = {};
++    _update: function() {
++        if (!this._map || !this._lngLat || !this._content) { return; }
+ 
+-/**
+- * Creates a new, empty vec4
+- *
+- * @returns {vec4} a new 4D vector
+- */
+-vec4.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    return out;
+-};
++        if (!this._container) {
++            this._container = DOM.create('div', 'mapboxgl-popup', this._map.getContainer());
++            this._tip       = DOM.create('div', 'mapboxgl-popup-tip', this._container);
++            this._container.appendChild(this._content);
++        }
+ 
+-/**
+- * Creates a new vec4 initialized with values from an existing vector
+- *
+- * @param {vec4} a vector to clone
+- * @returns {vec4} a new 4D vector
+- */
+-vec4.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
+-};
++        var pos = this._map.project(this._lngLat).round(),
++            anchor = this.options.anchor;
+ 
+-/**
+- * Creates a new vec4 initialized with the given values
+- *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {vec4} a new 4D vector
+- */
+-vec4.fromValues = function(x, y, z, w) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    out[3] = w;
+-    return out;
+-};
++        if (!anchor) {
++            var width = this._container.offsetWidth,
++                height = this._container.offsetHeight;
+ 
+-/**
+- * Copy the values from one vec4 to another
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the source vector
+- * @returns {vec4} out
+- */
+-vec4.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
+-};
++            if (pos.y < height) {
++                anchor = ['top'];
++            } else if (pos.y > this._map.transform.height - height) {
++                anchor = ['bottom'];
++            } else {
++                anchor = [];
++            }
+ 
+-/**
+- * Set the components of a vec4 to the given values
+- *
+- * @param {vec4} out the receiving vector
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {vec4} out
+- */
+-vec4.set = function(out, x, y, z, w) {
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    out[3] = w;
+-    return out;
+-};
++            if (pos.x < width / 2) {
++                anchor.push('left');
++            } else if (pos.x > this._map.transform.width - width / 2) {
++                anchor.push('right');
++            }
+ 
+-/**
+- * Adds two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
+- */
+-vec4.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    return out;
+-};
++            if (anchor.length === 0) {
++                anchor = 'bottom';
++            } else {
++                anchor = anchor.join('-');
++            }
++        }
+ 
+-/**
+- * Subtracts vector b from vector a
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
+- */
+-vec4.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    return out;
+-};
++        var anchorTranslate = {
++            'top': 'translate(-50%,0)',
++            'top-left': 'translate(0,0)',
++            'top-right': 'translate(-100%,0)',
++            'bottom': 'translate(-50%,-100%)',
++            'bottom-left': 'translate(0,-100%)',
++            'bottom-right': 'translate(-100%,-100%)',
++            'left': 'translate(0,-50%)',
++            'right': 'translate(-100%,-50%)'
++        };
+ 
+-/**
+- * Alias for {@link vec4.subtract}
+- * @function
+- */
+-vec4.sub = vec4.subtract;
++        var classList = this._container.classList;
++        for (var key in anchorTranslate) {
++            classList.remove('mapboxgl-popup-anchor-' + key);
++        }
++        classList.add('mapboxgl-popup-anchor-' + anchor);
+ 
+-/**
+- * Multiplies two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
+- */
+-vec4.multiply = function(out, a, b) {
+-    out[0] = a[0] * b[0];
+-    out[1] = a[1] * b[1];
+-    out[2] = a[2] * b[2];
+-    out[3] = a[3] * b[3];
+-    return out;
+-};
++        DOM.setTransform(this._container, anchorTranslate[anchor] + ' translate(' + pos.x + 'px,' + pos.y + 'px)');
++    },
+ 
+-/**
+- * Alias for {@link vec4.multiply}
+- * @function
+- */
+-vec4.mul = vec4.multiply;
++    _onClickClose: function() {
++        this.remove();
++    }
++});
+ 
+-/**
+- * Divides two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
+- */
+-vec4.divide = function(out, a, b) {
+-    out[0] = a[0] / b[0];
+-    out[1] = a[1] / b[1];
+-    out[2] = a[2] / b[2];
+-    out[3] = a[3] / b[3];
+-    return out;
+-};
++},{"../geo/lng_lat":76,"../util/dom":158,"../util/evented":161,"../util/util":169}],153:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Alias for {@link vec4.divide}
+- * @function
+- */
+-vec4.div = vec4.divide;
++module.exports = Actor;
+ 
+ /**
+- * Math.ceil the components of a vec4
++ * An implementation of the [Actor design pattern](http://en.wikipedia.org/wiki/Actor_model)
++ * that maintains the relationship between asynchronous tasks and the objects
++ * that spin them off - in this case, tasks like parsing parts of styles,
++ * owned by the styles
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to ceil
+- * @returns {vec4} out
++ * @param {WebWorker} target
++ * @param {WebWorker} parent
++ * @private
+  */
+-vec4.ceil = function (out, a) {
+-    out[0] = Math.ceil(a[0]);
+-    out[1] = Math.ceil(a[1]);
+-    out[2] = Math.ceil(a[2]);
+-    out[3] = Math.ceil(a[3]);
+-    return out;
+-};
++function Actor(target, parent) {
++    this.target = target;
++    this.parent = parent;
++    this.callbacks = {};
++    this.callbackID = 0;
++    this.receive = this.receive.bind(this);
++    this.target.addEventListener('message', this.receive, false);
++}
+ 
+-/**
+- * Math.floor the components of a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to floor
+- * @returns {vec4} out
+- */
+-vec4.floor = function (out, a) {
+-    out[0] = Math.floor(a[0]);
+-    out[1] = Math.floor(a[1]);
+-    out[2] = Math.floor(a[2]);
+-    out[3] = Math.floor(a[3]);
+-    return out;
+-};
++Actor.prototype.receive = function(message) {
++    var data = message.data,
++        callback;
+ 
+-/**
+- * Returns the minimum of two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
+- */
+-vec4.min = function(out, a, b) {
+-    out[0] = Math.min(a[0], b[0]);
+-    out[1] = Math.min(a[1], b[1]);
+-    out[2] = Math.min(a[2], b[2]);
+-    out[3] = Math.min(a[3], b[3]);
+-    return out;
++    if (data.type === '<response>') {
++        callback = this.callbacks[data.id];
++        delete this.callbacks[data.id];
++        callback(data.error || null, data.data);
++    } else if (typeof data.id !== 'undefined') {
++        var id = data.id;
++        this.parent[data.type](data.data, function(err, data, buffers) {
++            this.postMessage({
++                type: '<response>',
++                id: String(id),
++                error: err ? String(err) : null,
++                data: data
++            }, buffers);
++        }.bind(this));
++    } else {
++        this.parent[data.type](data.data);
++    }
+ };
+ 
+-/**
+- * Returns the maximum of two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
+- */
+-vec4.max = function(out, a, b) {
+-    out[0] = Math.max(a[0], b[0]);
+-    out[1] = Math.max(a[1], b[1]);
+-    out[2] = Math.max(a[2], b[2]);
+-    out[3] = Math.max(a[3], b[3]);
+-    return out;
++Actor.prototype.send = function(type, data, callback, buffers) {
++    var id = null;
++    if (callback) this.callbacks[id = this.callbackID++] = callback;
++    this.postMessage({ type: type, id: String(id), data: data }, buffers);
+ };
+ 
+ /**
+- * Math.round the components of a vec4
++ * Wrapped postMessage API that abstracts around IE's lack of
++ * `transferList` support.
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to round
+- * @returns {vec4} out
++ * @param {Object} message
++ * @param {Object} transferList
++ * @private
+  */
+-vec4.round = function (out, a) {
+-    out[0] = Math.round(a[0]);
+-    out[1] = Math.round(a[1]);
+-    out[2] = Math.round(a[2]);
+-    out[3] = Math.round(a[3]);
+-    return out;
++Actor.prototype.postMessage = function(message, transferList) {
++    this.target.postMessage(message, transferList);
+ };
+ 
+-/**
+- * Scales a vec4 by a scalar number
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {vec4} out
+- */
+-vec4.scale = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    return out;
+-};
++},{}],154:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Adds two vec4's after scaling the second operand by a scalar value
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @param {Number} scale the amount to scale b by before adding
+- * @returns {vec4} out
+- */
+-vec4.scaleAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    return out;
++exports.getJSON = function(url, callback) {
++    var xhr = new XMLHttpRequest();
++    xhr.open('GET', url, true);
++    xhr.setRequestHeader('Accept', 'application/json');
++    xhr.onerror = function(e) {
++        callback(e);
++    };
++    xhr.onload = function() {
++        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
++            var data;
++            try {
++                data = JSON.parse(xhr.response);
++            } catch (err) {
++                return callback(err);
++            }
++            callback(null, data);
++        } else {
++            callback(new Error(xhr.statusText));
++        }
++    };
++    xhr.send();
++    return xhr;
+ };
+ 
+-/**
+- * Calculates the euclidian distance between two vec4's
+- *
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {Number} distance between a and b
+- */
+-vec4.distance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2],
+-        w = b[3] - a[3];
+-    return Math.sqrt(x*x + y*y + z*z + w*w);
++exports.getArrayBuffer = function(url, callback) {
++    var xhr = new XMLHttpRequest();
++    xhr.open('GET', url, true);
++    xhr.responseType = 'arraybuffer';
++    xhr.onerror = function(e) {
++        callback(e);
++    };
++    xhr.onload = function() {
++        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
++            callback(null, xhr.response);
++        } else {
++            callback(new Error(xhr.statusText));
++        }
++    };
++    xhr.send();
++    return xhr;
+ };
+ 
+-/**
+- * Alias for {@link vec4.distance}
+- * @function
+- */
+-vec4.dist = vec4.distance;
++function sameOrigin(url) {
++    var a = document.createElement('a');
++    a.href = url;
++    return a.protocol === document.location.protocol && a.host === document.location.host;
++}
+ 
+-/**
+- * Calculates the squared euclidian distance between two vec4's
+- *
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {Number} squared distance between a and b
+- */
+-vec4.squaredDistance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2],
+-        w = b[3] - a[3];
+-    return x*x + y*y + z*z + w*w;
++exports.getImage = function(url, callback) {
++    return exports.getArrayBuffer(url, function(err, imgData) {
++        if (err) return callback(err);
++        var img = new Image();
++        img.onload = function() {
++            callback(null, img);
++            (window.URL || window.webkitURL).revokeObjectURL(img.src);
++        };
++        var blob = new Blob([new Uint8Array(imgData)], { type: 'image/png' });
++        img.src = (window.URL || window.webkitURL).createObjectURL(blob);
++        img.getData = function() {
++            var canvas = document.createElement('canvas');
++            var context = canvas.getContext('2d');
++            canvas.width = img.width;
++            canvas.height = img.height;
++            context.drawImage(img, 0, 0);
++            return context.getImageData(0, 0, img.width, img.height).data;
++        };
++        return img;
++    });
+ };
+ 
+-/**
+- * Alias for {@link vec4.squaredDistance}
+- * @function
+- */
+-vec4.sqrDist = vec4.squaredDistance;
+-
+-/**
+- * Calculates the length of a vec4
+- *
+- * @param {vec4} a vector to calculate length of
+- * @returns {Number} length of a
+- */
+-vec4.length = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2],
+-        w = a[3];
+-    return Math.sqrt(x*x + y*y + z*z + w*w);
++exports.getVideo = function(urls, callback) {
++    var video = document.createElement('video');
++    video.onloadstart = function() {
++        callback(null, video);
++    };
++    for (var i = 0; i < urls.length; i++) {
++        var s = document.createElement('source');
++        if (!sameOrigin(urls[i])) {
++            video.crossOrigin = 'Anonymous';
++        }
++        s.src = urls[i];
++        video.appendChild(s);
++    }
++    video.getData = function() { return video; };
++    return video;
+ };
+ 
+-/**
+- * Alias for {@link vec4.length}
+- * @function
+- */
+-vec4.len = vec4.length;
++},{}],155:[function(require,module,exports){
++'use strict';
+ 
+ /**
+- * Calculates the squared length of a vec4
+- *
+- * @param {vec4} a vector to calculate squared length of
+- * @returns {Number} squared length of a
++ * Unlike js/util/browser.js, this code is written with the expectation
++ * of a browser environment with a global 'window' object
++ * @module browser
++ * @private
+  */
+-vec4.squaredLength = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2],
+-        w = a[3];
+-    return x*x + y*y + z*z + w*w;
+-};
+ 
+ /**
+- * Alias for {@link vec4.squaredLength}
+- * @function
++ * Provides a function that outputs milliseconds: either performance.now()
++ * or a fallback to Date.now()
+  */
+-vec4.sqrLen = vec4.squaredLength;
++module.exports.now = (function() {
++    if (window.performance &&
++        window.performance.now) {
++        return window.performance.now.bind(window.performance);
++    } else {
++        return Date.now.bind(Date);
++    }
++}());
+ 
+-/**
+- * Negates the components of a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to negate
+- * @returns {vec4} out
+- */
+-vec4.negate = function(out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    out[3] = -a[3];
+-    return out;
++var frame = window.requestAnimationFrame ||
++    window.mozRequestAnimationFrame ||
++    window.webkitRequestAnimationFrame ||
++    window.msRequestAnimationFrame;
++
++exports.frame = function(fn) {
++    return frame(fn);
+ };
+ 
+-/**
+- * Returns the inverse of the components of a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to invert
+- * @returns {vec4} out
+- */
+-vec4.inverse = function(out, a) {
+-  out[0] = 1.0 / a[0];
+-  out[1] = 1.0 / a[1];
+-  out[2] = 1.0 / a[2];
+-  out[3] = 1.0 / a[3];
+-  return out;
++var cancel = window.cancelAnimationFrame ||
++    window.mozCancelAnimationFrame ||
++    window.webkitCancelAnimationFrame ||
++    window.msCancelAnimationFrame;
++
++exports.cancelFrame = function(id) {
++    cancel(id);
+ };
+ 
+-/**
+- * Normalize a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to normalize
+- * @returns {vec4} out
+- */
+-vec4.normalize = function(out, a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2],
+-        w = a[3];
+-    var len = x*x + y*y + z*z + w*w;
+-    if (len > 0) {
+-        len = 1 / Math.sqrt(len);
+-        out[0] = x * len;
+-        out[1] = y * len;
+-        out[2] = z * len;
+-        out[3] = w * len;
++exports.timed = function (fn, dur, ctx) {
++    if (!dur) {
++        fn.call(ctx, 1);
++        return null;
+     }
+-    return out;
+-};
+ 
+-/**
+- * Calculates the dot product of two vec4's
+- *
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-vec4.dot = function (a, b) {
+-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+-};
++    var abort = false,
++        start = module.exports.now();
+ 
+-/**
+- * Performs a linear interpolation between two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec4} out
+- */
+-vec4.lerp = function (out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1],
+-        az = a[2],
+-        aw = a[3];
+-    out[0] = ax + t * (b[0] - ax);
+-    out[1] = ay + t * (b[1] - ay);
+-    out[2] = az + t * (b[2] - az);
+-    out[3] = aw + t * (b[3] - aw);
+-    return out;
+-};
++    function tick(now) {
++        if (abort) return;
++        now = module.exports.now();
++
++        if (now >= start + dur) {
++            fn.call(ctx, 1);
++        } else {
++            fn.call(ctx, (now - start) / dur);
++            exports.frame(tick);
++        }
++    }
+ 
+-/**
+- * Generates a random vector with the given scale
+- *
+- * @param {vec4} out the receiving vector
+- * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+- * @returns {vec4} out
+- */
+-vec4.random = function (out, scale) {
+-    scale = scale || 1.0;
++    exports.frame(tick);
+ 
+-    //TODO: This is a pretty awful way of doing this. Find something better.
+-    out[0] = glMatrix.RANDOM();
+-    out[1] = glMatrix.RANDOM();
+-    out[2] = glMatrix.RANDOM();
+-    out[3] = glMatrix.RANDOM();
+-    vec4.normalize(out, out);
+-    vec4.scale(out, out, scale);
+-    return out;
++    return function() { abort = true; };
+ };
+ 
+ /**
+- * Transforms the vec4 with a mat4.
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec4} out
++ * Test if the current browser supports Mapbox GL JS
++ * @param {Object} options
++ * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
++ *   if the performance of Mapbox GL JS would be dramatically worse than
++ *   expected (i.e. a software renderer would be used)
++ * @return {boolean}
+  */
+-vec4.transformMat4 = function(out, a, m) {
+-    var x = a[0], y = a[1], z = a[2], w = a[3];
+-    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
+-    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
+-    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
+-    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
+-    return out;
+-};
++exports.supported = require('mapbox-gl-js-supported');
+ 
+-/**
+- * Transforms the vec4 with a quat
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to transform
+- * @param {quat} q quaternion to transform with
+- * @returns {vec4} out
+- */
+-vec4.transformQuat = function(out, a, q) {
+-    var x = a[0], y = a[1], z = a[2],
+-        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
++exports.hardwareConcurrency = navigator.hardwareConcurrency || 8;
+ 
+-        // calculate quat * vec
+-        ix = qw * x + qy * z - qz * y,
+-        iy = qw * y + qz * x - qx * z,
+-        iz = qw * z + qx * y - qy * x,
+-        iw = -qx * x - qy * y - qz * z;
++Object.defineProperty(exports, 'devicePixelRatio', {
++    get: function() { return window.devicePixelRatio; }
++});
+ 
+-    // calculate result * inverse quat
+-    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+-    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+-    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+-    out[3] = a[3];
+-    return out;
++exports.supportsWebp = false;
++
++var webpImgTest = document.createElement('img');
++webpImgTest.onload = function() {
++    exports.supportsWebp = true;
+ };
++webpImgTest.src = 'data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=';
+ 
+-/**
+- * Perform some operation over an array of vec4s.
+- *
+- * @param {Array} a the array of vectors to iterate over
+- * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed
+- * @param {Number} offset Number of elements to skip at the beginning of the array
+- * @param {Number} count Number of vec4s to iterate over. If 0 iterates over entire array
+- * @param {Function} fn Function to call for each vector in the array
+- * @param {Object} [arg] additional argument to pass to fn
+- * @returns {Array} a
+- * @function
+- */
+-vec4.forEach = (function() {
+-    var vec = vec4.create();
++exports.supportsGeolocation = !!navigator.geolocation;
+ 
+-    return function(a, stride, offset, count, fn, arg) {
+-        var i, l;
+-        if(!stride) {
+-            stride = 4;
+-        }
++},{"mapbox-gl-js-supported":41}],156:[function(require,module,exports){
++'use strict';
+ 
+-        if(!offset) {
+-            offset = 0;
+-        }
+-        
+-        if(count) {
+-            l = Math.min((count * stride) + offset, a.length);
+-        } else {
+-            l = a.length;
+-        }
++var util = require('../util');
++var isSupported = require('mapbox-gl-js-supported');
+ 
+-        for(i = offset; i < l; i += stride) {
+-            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2]; vec[3] = a[i+3];
+-            fn(vec, vec, arg);
+-            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2]; a[i+3] = vec[3];
+-        }
+-        
+-        return a;
+-    };
+-})();
++module.exports = Canvas;
+ 
+-/**
+- * Returns a string representation of a vector
+- *
+- * @param {vec4} vec vector to represent as a string
+- * @returns {String} string representation of the vector
+- */
+-vec4.str = function (a) {
+-    return 'vec4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+-};
++function Canvas(parent, container) {
++    this.canvas = document.createElement('canvas');
+ 
+-/**
+- * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {vec4} a The first vector.
+- * @param {vec4} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-vec4.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
++    if (parent && container) {
++        this.canvas.style.position = 'absolute';
++        this.canvas.classList.add('mapboxgl-canvas');
++        this.canvas.addEventListener('webglcontextlost', parent._contextLost.bind(parent), false);
++        this.canvas.addEventListener('webglcontextrestored', parent._contextRestored.bind(parent), false);
++        this.canvas.setAttribute('tabindex', 0);
++        container.appendChild(this.canvas);
++    }
++}
++
++Canvas.prototype.resize = function(width, height) {
++    var pixelRatio = window.devicePixelRatio || 1;
++
++    // Request the required canvas size taking the pixelratio into account.
++    this.canvas.width = pixelRatio * width;
++    this.canvas.height = pixelRatio * height;
++
++    // Maintain the same canvas size, potentially downscaling it for HiDPI displays
++    this.canvas.style.width = width + 'px';
++    this.canvas.style.height = height + 'px';
+ };
+ 
+-/**
+- * Returns whether or not the vectors have approximately the same elements in the same position.
+- *
+- * @param {vec4} a The first vector.
+- * @param {vec4} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-vec4.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
++Canvas.prototype.getWebGLContext = function(attributes) {
++    attributes = util.extend({}, attributes, isSupported.webGLContextAttributes);
++
++    return this.canvas.getContext('webgl', attributes) ||
++        this.canvas.getContext('experimental-webgl', attributes);
+ };
+ 
+-module.exports = vec4;
++Canvas.prototype.getElement = function() {
++    return this.canvas;
++};
+ 
+-},{"./common.js":134}],143:[function(require,module,exports){
++},{"../util":169,"mapbox-gl-js-supported":41}],157:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = GridIndex;
++var Actor = require('../actor');
++var WebWorkify = require('webworkify');
+ 
+-var NUM_PARAMS = 3;
++module.exports = Dispatcher;
+ 
+-function GridIndex(extent, n, padding) {
+-    var cells = this.cells = [];
++function Dispatcher(length, parent) {
++    this.actors = [];
++    this.currentActor = 0;
++    for (var i = 0; i < length; i++) {
++        var worker = new WebWorkify(require('../../source/worker'));
++        var actor = new Actor(worker, parent);
++        actor.name = "Worker " + i;
++        this.actors.push(actor);
++    }
++}
+ 
+-    if (extent instanceof ArrayBuffer) {
+-        this.arrayBuffer = extent;
+-        var array = new Int32Array(this.arrayBuffer);
+-        extent = array[0];
+-        n = array[1];
+-        padding = array[2];
++Dispatcher.prototype = {
++    broadcast: function(type, data) {
++        for (var i = 0; i < this.actors.length; i++) {
++            this.actors[i].send(type, data);
++        }
++    },
+ 
+-        this.d = n + 2 * padding;
+-        for (var k = 0; k < this.d * this.d; k++) {
+-            var start = array[NUM_PARAMS + k];
+-            var end = array[NUM_PARAMS + k + 1];
+-            cells.push(start === end ?
+-                    null :
+-                    array.subarray(start, end));
++    send: function(type, data, callback, targetID, buffers) {
++        if (typeof targetID !== 'number' || isNaN(targetID)) {
++            // Use round robin to send requests to web workers.
++            targetID = this.currentActor = (this.currentActor + 1) % this.actors.length;
+         }
+-        var keysOffset = array[NUM_PARAMS + cells.length];
+-        var bboxesOffset = array[NUM_PARAMS + cells.length + 1];
+-        this.keys = array.subarray(keysOffset, bboxesOffset);
+-        this.bboxes = array.subarray(bboxesOffset);
+ 
+-        this.insert = this._insertReadonly;
++        this.actors[targetID].send(type, data, callback, buffers);
++        return targetID;
++    },
+ 
+-    } else {
+-        this.d = n + 2 * padding;
+-        for (var i = 0; i < this.d * this.d; i++) {
+-            cells.push([]);
++    remove: function() {
++        for (var i = 0; i < this.actors.length; i++) {
++            this.actors[i].target.terminate();
+         }
+-        this.keys = [];
+-        this.bboxes = [];
++        this.actors = [];
+     }
++};
+ 
+-    this.n = n;
+-    this.extent = extent;
+-    this.padding = padding;
+-    this.scale = n / extent;
+-    this.uid = 0;
++},{"../../source/worker":105,"../actor":153,"webworkify":191}],158:[function(require,module,exports){
++'use strict';
+ 
+-    var p = (padding / n) * extent;
+-    this.min = -p;
+-    this.max = extent + p;
++var Point = require('point-geometry');
++
++exports.create = function (tagName, className, container) {
++    var el = document.createElement(tagName);
++    if (className) el.className = className;
++    if (container) container.appendChild(el);
++    return el;
++};
++
++var docStyle = document.documentElement.style;
++
++function testProp(props) {
++    for (var i = 0; i < props.length; i++) {
++        if (props[i] in docStyle) {
++            return props[i];
++        }
++    }
+ }
+ 
++var selectProp = testProp(['userSelect', 'MozUserSelect', 'WebkitUserSelect', 'msUserSelect']),
++    userSelect;
++exports.disableDrag = function () {
++    if (selectProp) {
++        userSelect = docStyle[selectProp];
++        docStyle[selectProp] = 'none';
++    }
++};
++exports.enableDrag = function () {
++    if (selectProp) {
++        docStyle[selectProp] = userSelect;
++    }
++};
+ 
+-GridIndex.prototype.insert = function(key, x1, y1, x2, y2) {
+-    this._forEachCell(x1, y1, x2, y2, this._insertCell, this.uid++);
+-    this.keys.push(key);
+-    this.bboxes.push(x1);
+-    this.bboxes.push(y1);
+-    this.bboxes.push(x2);
+-    this.bboxes.push(y2);
++var transformProp = testProp(['transform', 'WebkitTransform']);
++exports.setTransform = function(el, value) {
++    el.style[transformProp] = value;
+ };
+ 
+-GridIndex.prototype._insertReadonly = function() {
+-    throw 'Cannot insert into a GridIndex created from an ArrayBuffer.';
++// Suppress the next click, but only if it's immediate.
++function suppressClick(e) {
++    e.preventDefault();
++    e.stopPropagation();
++    window.removeEventListener('click', suppressClick, true);
++}
++exports.suppressClick = function() {
++    window.addEventListener('click', suppressClick, true);
++    window.setTimeout(function() {
++        window.removeEventListener('click', suppressClick, true);
++    }, 0);
+ };
+ 
+-GridIndex.prototype._insertCell = function(x1, y1, x2, y2, cellIndex, uid) {
+-    this.cells[cellIndex].push(uid);
++exports.mousePos = function (el, e) {
++    var rect = el.getBoundingClientRect();
++    e = e.touches ? e.touches[0] : e;
++    return new Point(
++        e.clientX - rect.left - el.clientLeft,
++        e.clientY - rect.top - el.clientTop
++    );
+ };
+ 
+-GridIndex.prototype.query = function(x1, y1, x2, y2) {
+-    var min = this.min;
+-    var max = this.max;
+-    if (x1 <= min && y1 <= min && max <= x2 && max <= y2) {
+-        return this.keys.slice();
++exports.touchPos = function (el, e) {
++    var rect = el.getBoundingClientRect(),
++        points = [];
++    for (var i = 0; i < e.touches.length; i++) {
++        points.push(new Point(
++            e.touches[i].clientX - rect.left - el.clientLeft,
++            e.touches[i].clientY - rect.top - el.clientTop
++        ));
++    }
++    return points;
++};
+ 
+-    } else {
+-        var result = [];
+-        var seenUids = {};
+-        this._forEachCell(x1, y1, x2, y2, this._queryCell, result, seenUids);
+-        return result;
++},{"point-geometry":174}],159:[function(require,module,exports){
++'use strict';
++
++module.exports = {
++    API_URL: 'https://api.mapbox.com',
++    REQUIRE_ACCESS_TOKEN: true
++};
++
++},{}],160:[function(require,module,exports){
++'use strict';
++
++var assert = require('assert');
++
++module.exports = DictionaryCoder;
++
++function DictionaryCoder(strings) {
++    this._stringToNumber = {};
++    this._numberToString = [];
++    for (var i = 0; i < strings.length; i++) {
++        var string = strings[i];
++        this._stringToNumber[string] = i;
++        this._numberToString[i] = string;
+     }
++}
++
++DictionaryCoder.prototype.encode = function(string) {
++    assert(string in this._stringToNumber);
++    return this._stringToNumber[string];
+ };
+ 
+-GridIndex.prototype._queryCell = function(x1, y1, x2, y2, cellIndex, result, seenUids) {
+-    var cell = this.cells[cellIndex];
+-    if (cell !== null) {
+-        var keys = this.keys;
+-        var bboxes = this.bboxes;
+-        for (var u = 0; u < cell.length; u++) {
+-            var uid = cell[u];
+-            if (seenUids[uid] === undefined) {
+-                var offset = uid * 4;
+-                if ((x1 <= bboxes[offset + 2]) &&
+-                    (y1 <= bboxes[offset + 3]) &&
+-                    (x2 >= bboxes[offset + 0]) &&
+-                    (y2 >= bboxes[offset + 1])) {
+-                    seenUids[uid] = true;
+-                    result.push(keys[uid]);
+-                } else {
+-                    seenUids[uid] = false;
+-                }
++DictionaryCoder.prototype.decode = function(n) {
++    assert(n < this._numberToString.length);
++    return this._numberToString[n];
++};
++
++},{"assert":6}],161:[function(require,module,exports){
++'use strict';
++
++var util = require('./util');
++
++/**
++ * Methods mixed in to other classes for event capabilities.
++ * @mixin Evented
++ */
++var Evented = {
++
++    /**
++     * Subscribe to a specified event with a listener function the latter gets the data object that was passed to `fire` and additionally `target` and `type` properties
++     *
++     * @param {string} type Event type
++     * @param {Function} listener Function to be called when the event is fired
++     * @returns {Object} `this`
++     */
++    on: function(type, listener) {
++        this._events = this._events || {};
++        this._events[type] = this._events[type] || [];
++        this._events[type].push(listener);
++
++        return this;
++    },
++
++    /**
++     * Remove a event listener
++     *
++     * @param {string} [type] Event type. If none is specified, remove all listeners
++     * @param {Function} [listener] Function to be called when the event is fired. If none is specified all listeners are removed
++     * @returns {Object} `this`
++     */
++    off: function(type, listener) {
++        if (!type) {
++            // clear all listeners if no arguments specified
++            delete this._events;
++            return this;
++        }
++
++        if (!this.listens(type)) return this;
++
++        if (listener) {
++            var idx = this._events[type].indexOf(listener);
++            if (idx >= 0) {
++                this._events[type].splice(idx, 1);
++            }
++            if (!this._events[type].length) {
++                delete this._events[type];
+             }
++        } else {
++            delete this._events[type];
+         }
+-    }
+-};
+ 
+-GridIndex.prototype._forEachCell = function(x1, y1, x2, y2, fn, arg1, arg2) {
+-    var cx1 = this._convertToCellCoord(x1);
+-    var cy1 = this._convertToCellCoord(y1);
+-    var cx2 = this._convertToCellCoord(x2);
+-    var cy2 = this._convertToCellCoord(y2);
+-    for (var x = cx1; x <= cx2; x++) {
+-        for (var y = cy1; y <= cy2; y++) {
+-            var cellIndex = this.d * y + x;
+-            if (fn.call(this, x1, y1, x2, y2, cellIndex, arg1, arg2)) return;
++        return this;
++    },
++
++    /**
++     * Call a function once when an event has fired
++     *
++     * @param {string} type Event type.
++     * @param {Function} listener Function to be called once when the event is fired
++     * @returns {Object} `this`
++     */
++    once: function(type, listener) {
++        var wrapper = function(data) {
++            this.off(type, wrapper);
++            listener.call(this, data);
++        }.bind(this);
++        this.on(type, wrapper);
++        return this;
++    },
++
++    /**
++     * Fire event of a given string type with the given data object
++     *
++     * @param {string} type Event type
++     * @param {Object} [data] Optional data passed to the event receiver (e.g. {@link #EventData})
++     * @returns {Object} `this`
++     */
++    fire: function(type, data) {
++        if (!this.listens(type)) return this;
++
++        data = util.extend({}, data);
++        util.extend(data, {type: type, target: this});
++
++        // make sure adding/removing listeners inside other listeners won't cause infinite loop
++        var listeners = this._events[type].slice();
++
++        for (var i = 0; i < listeners.length; i++) {
++            listeners[i].call(this, data);
+         }
++
++        return this;
++    },
++
++    /**
++     * Check if an event is registered to a type
++     * @param {string} type Event type
++     * @returns {boolean} `true` if there is at least one registered listener for events of type `type`
++     */
++    listens: function(type) {
++        return !!(this._events && this._events[type]);
+     }
+ };
+ 
+-GridIndex.prototype._convertToCellCoord = function(x) {
+-    return Math.max(0, Math.min(this.d - 1, Math.floor(x * this.scale) + this.padding));
+-};
++module.exports = Evented;
++
++},{"./util":169}],162:[function(require,module,exports){
++'use strict';
++
++module.exports = Glyphs;
++
++function Glyphs(pbf, end) {
++    this.stacks = pbf.readFields(readFontstacks, [], end);
++}
++
++function readFontstacks(tag, stacks, pbf) {
++    if (tag === 1) {
++        var fontstack = pbf.readMessage(readFontstack, {glyphs: {}});
++        stacks.push(fontstack);
++    }
++}
++
++function readFontstack(tag, fontstack, pbf) {
++    if (tag === 1) fontstack.name = pbf.readString();
++    else if (tag === 2) fontstack.range = pbf.readString();
++    else if (tag === 3) {
++        var glyph = pbf.readMessage(readGlyph, {});
++        fontstack.glyphs[glyph.id] = glyph;
++    }
++}
+ 
+-GridIndex.prototype.toArrayBuffer = function() {
+-    if (this.arrayBuffer) return this.arrayBuffer;
++function readGlyph(tag, glyph, pbf) {
++    if (tag === 1) glyph.id = pbf.readVarint();
++    else if (tag === 2) glyph.bitmap = pbf.readBytes();
++    else if (tag === 3) glyph.width = pbf.readVarint();
++    else if (tag === 4) glyph.height = pbf.readVarint();
++    else if (tag === 5) glyph.left = pbf.readSVarint();
++    else if (tag === 6) glyph.top = pbf.readSVarint();
++    else if (tag === 7) glyph.advance = pbf.readVarint();
++}
+ 
+-    var cells = this.cells;
++},{}],163:[function(require,module,exports){
++'use strict';
+ 
+-    var metadataLength = NUM_PARAMS + this.cells.length + 1 + 1;
+-    var totalCellLength = 0;
+-    for (var i = 0; i < this.cells.length; i++) {
+-        totalCellLength += this.cells[i].length;
+-    }
++module.exports = interpolate;
+ 
+-    var array = new Int32Array(metadataLength + totalCellLength + this.keys.length + this.bboxes.length);
+-    array[0] = this.extent;
+-    array[1] = this.n;
+-    array[2] = this.padding;
++function interpolate(a, b, t) {
++    return (a * (1 - t)) + (b * t);
++}
+ 
+-    var offset = metadataLength;
+-    for (var k = 0; k < cells.length; k++) {
+-        var cell = cells[k];
+-        array[NUM_PARAMS + k] = offset;
+-        array.set(cell, offset);
+-        offset += cell.length;
+-    }
++interpolate.number = interpolate;
+ 
+-    array[NUM_PARAMS + cells.length] = offset;
+-    array.set(this.keys, offset);
+-    offset += this.keys.length;
++interpolate.vec2 = function(from, to, t) {
++    return [
++        interpolate(from[0], to[0], t),
++        interpolate(from[1], to[1], t)
++    ];
++};
+ 
+-    array[NUM_PARAMS + cells.length + 1] = offset;
+-    array.set(this.bboxes, offset);
+-    offset += this.bboxes.length;
++/*
++ * Interpolate between two colors given as 4-element arrays.
++ *
++ * @param {Color} from
++ * @param {Color} to
++ * @param {number} t interpolation factor between 0 and 1
++ * @returns {Color} interpolated color
++ */
++interpolate.color = function(from, to, t) {
++    return [
++        interpolate(from[0], to[0], t),
++        interpolate(from[1], to[1], t),
++        interpolate(from[2], to[2], t),
++        interpolate(from[3], to[3], t)
++    ];
++};
+ 
+-    return array.buffer;
++interpolate.array = function(from, to, t) {
++    return from.map(function(d, i) {
++        return interpolate(d, to[i], t);
++    });
+ };
+ 
+-},{}],144:[function(require,module,exports){
++},{}],164:[function(require,module,exports){
+ 'use strict';
+ 
+-function createFunction(parameters, defaultType) {
+-    var fun;
+-
+-    if (!isFunctionDefinition(parameters)) {
+-        fun = function() { return parameters; };
+-        fun.isFeatureConstant = true;
+-        fun.isZoomConstant = true;
+-
+-    } else {
+-        var zoomAndFeatureDependent = typeof parameters.stops[0][0] === 'object';
+-        var featureDependent = zoomAndFeatureDependent || parameters.property !== undefined;
+-        var zoomDependent = zoomAndFeatureDependent || !featureDependent;
+-        var type = parameters.type || defaultType || 'exponential';
++module.exports = {
++    multiPolygonIntersectsBufferedMultiPoint: multiPolygonIntersectsBufferedMultiPoint,
++    multiPolygonIntersectsMultiPolygon: multiPolygonIntersectsMultiPolygon,
++    multiPolygonIntersectsBufferedMultiLine: multiPolygonIntersectsBufferedMultiLine
++};
+ 
+-        var innerFun;
+-        if (type === 'exponential') {
+-            innerFun = evaluateExponentialFunction;
+-        } else if (type === 'interval') {
+-            innerFun = evaluateIntervalFunction;
+-        } else if (type === 'categorical') {
+-            innerFun = evaluateCategoricalFunction;
+-        } else {
+-            throw new Error('Unknown function type "' + type + '"');
++function multiPolygonIntersectsBufferedMultiPoint(multiPolygon, rings, radius) {
++    for (var j = 0; j < multiPolygon.length; j++) {
++        var polygon = multiPolygon[j];
++        for (var i = 0; i < rings.length; i++) {
++            var ring = rings[i];
++            for (var k = 0; k < ring.length; k++) {
++                var point = ring[k];
++                if (polygonContainsPoint(polygon, point)) return true;
++                if (pointIntersectsBufferedLine(point, polygon, radius)) return true;
++            }
+         }
++    }
++    return false;
++}
+ 
+-        if (zoomAndFeatureDependent) {
+-            var featureFunctions = {};
+-            var featureFunctionStops = [];
+-            for (var s = 0; s < parameters.stops.length; s++) {
+-                var stop = parameters.stops[s];
+-                if (featureFunctions[stop[0].zoom] === undefined) {
+-                    featureFunctions[stop[0].zoom] = {
+-                        zoom: stop[0].zoom,
+-                        type: parameters.type,
+-                        property: parameters.property,
+-                        stops: []
+-                    };
+-                }
+-                featureFunctions[stop[0].zoom].stops.push([stop[0].value, stop[1]]);
+-            }
++function multiPolygonIntersectsMultiPolygon(multiPolygonA, multiPolygonB) {
+ 
+-            for (var z in featureFunctions) {
+-                featureFunctionStops.push([featureFunctions[z].zoom, createFunction(featureFunctions[z])]);
+-            }
+-            fun = function(zoom, feature) {
+-                return evaluateExponentialFunction({ stops: featureFunctionStops, base: parameters.base }, zoom)(zoom, feature);
+-            };
+-            fun.isFeatureConstant = false;
+-            fun.isZoomConstant = false;
++    if (multiPolygonA.length === 1 && multiPolygonA[0].length === 1) {
++        return multiPolygonContainsPoint(multiPolygonB, multiPolygonA[0][0]);
++    }
+ 
+-        } else if (zoomDependent) {
+-            fun = function(zoom) {
+-                return innerFun(parameters, zoom);
+-            };
+-            fun.isFeatureConstant = true;
+-            fun.isZoomConstant = false;
+-        } else {
+-            fun = function(zoom, feature) {
+-                return innerFun(parameters, feature[parameters.property]);
+-            };
+-            fun.isFeatureConstant = false;
+-            fun.isZoomConstant = true;
++    for (var m = 0; m < multiPolygonB.length; m++) {
++        var ring = multiPolygonB[m];
++        for (var n = 0; n < ring.length; n++) {
++            if (multiPolygonContainsPoint(multiPolygonA, ring[n])) return true;
+         }
+     }
+ 
+-    return fun;
+-}
++    for (var j = 0; j < multiPolygonA.length; j++) {
++        var polygon = multiPolygonA[j];
++        for (var i = 0; i < polygon.length; i++) {
++            if (multiPolygonContainsPoint(multiPolygonB, polygon[i])) return true;
++        }
+ 
+-function evaluateCategoricalFunction(parameters, input) {
+-    for (var i = 0; i < parameters.stops.length; i++) {
+-        if (input === parameters.stops[i][0]) {
+-            return parameters.stops[i][1];
++        for (var k = 0; k < multiPolygonB.length; k++) {
++            if (lineIntersectsLine(polygon, multiPolygonB[k])) return true;
+         }
+     }
+-    return parameters.stops[0][1];
+-}
+ 
+-function evaluateIntervalFunction(parameters, input) {
+-    for (var i = 0; i < parameters.stops.length; i++) {
+-        if (input < parameters.stops[i][0]) break;
+-    }
+-    return parameters.stops[Math.max(i - 1, 0)][1];
++    return false;
+ }
+ 
+-function evaluateExponentialFunction(parameters, input) {
+-    var base = parameters.base !== undefined ? parameters.base : 1;
+-
+-    var i = 0;
+-    while (true) {
+-        if (i >= parameters.stops.length) break;
+-        else if (input <= parameters.stops[i][0]) break;
+-        else i++;
+-    }
++function multiPolygonIntersectsBufferedMultiLine(multiPolygon, multiLine, radius) {
++    for (var i = 0; i < multiLine.length; i++) {
++        var line = multiLine[i];
+ 
+-    if (i === 0) {
+-        return parameters.stops[i][1];
++        for (var j = 0; j < multiPolygon.length; j++) {
++            var polygon = multiPolygon[j];
+ 
+-    } else if (i === parameters.stops.length) {
+-        return parameters.stops[i - 1][1];
++            if (polygon.length >= 3) {
++                for (var k = 0; k < line.length; k++) {
++                    if (polygonContainsPoint(polygon, line[k])) return true;
++                }
++            }
+ 
+-    } else {
+-        return interpolate(
+-            input,
+-            base,
+-            parameters.stops[i - 1][0],
+-            parameters.stops[i][0],
+-            parameters.stops[i - 1][1],
+-            parameters.stops[i][1]
+-        );
++            if (lineIntersectsBufferedLine(polygon, line, radius)) return true;
++        }
+     }
++    return false;
+ }
+ 
++function lineIntersectsBufferedLine(lineA, lineB, radius) {
+ 
+-function interpolate(input, base, inputLower, inputUpper, outputLower, outputUpper) {
+-    if (typeof outputLower === 'function') {
+-        return function() {
+-            var evaluatedLower = outputLower.apply(undefined, arguments);
+-            var evaluatedUpper = outputUpper.apply(undefined, arguments);
+-            return interpolate(input, base, inputLower, inputUpper, evaluatedLower, evaluatedUpper);
+-        };
+-    } else if (outputLower.length) {
+-        return interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper);
+-    } else {
+-        return interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper);
+-    }
+-}
++    if (lineA.length > 1) {
++        if (lineIntersectsLine(lineA, lineB)) return true;
+ 
+-function interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper) {
+-    var difference =  inputUpper - inputLower;
+-    var progress = input - inputLower;
++        // Check whether any point in either line is within radius of the other line
++        for (var j = 0; j < lineB.length; j++) {
++            if (pointIntersectsBufferedLine(lineB[j], lineA, radius)) return true;
++        }
++    }
+ 
+-    var ratio;
+-    if (base === 1) {
+-        ratio = progress / difference;
+-    } else {
+-        ratio = (Math.pow(base, progress) - 1) / (Math.pow(base, difference) - 1);
++    for (var k = 0; k < lineA.length; k++) {
++        if (pointIntersectsBufferedLine(lineA[k], lineB, radius)) return true;
+     }
+ 
+-    return (outputLower * (1 - ratio)) + (outputUpper * ratio);
++    return false;
+ }
+ 
+-function interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper) {
+-    var output = [];
+-    for (var i = 0; i < outputLower.length; i++) {
+-        output[i] = interpolateNumber(input, base, inputLower, inputUpper, outputLower[i], outputUpper[i]);
++function lineIntersectsLine(lineA, lineB) {
++    for (var i = 0; i < lineA.length - 1; i++) {
++        var a0 = lineA[i];
++        var a1 = lineA[i + 1];
++        for (var j = 0; j < lineB.length - 1; j++) {
++            var b0 = lineB[j];
++            var b1 = lineB[j + 1];
++            if (lineSegmentIntersectsLineSegment(a0, a1, b0, b1)) return true;
++        }
+     }
+-    return output;
+-}
+-
+-function isFunctionDefinition(value) {
+-    return typeof value === 'object' && value.stops;
++    return false;
+ }
+ 
+ 
+-module.exports.isFunctionDefinition = isFunctionDefinition;
++// http://bryceboe.com/2006/10/23/line-segment-intersection-algorithm/
++function isCounterClockwise(a, b, c) {
++    return (c.y - a.y) * (b.x - a.x) > (b.y - a.y) * (c.x - a.x);
++}
+ 
+-module.exports.interpolated = function(parameters) {
+-    return createFunction(parameters, 'exponential');
+-};
++function lineSegmentIntersectsLineSegment(a0, a1, b0, b1) {
++    return isCounterClockwise(a0, b0, b1) !== isCounterClockwise(a1, b0, b1) &&
++        isCounterClockwise(a0, a1, b0) !== isCounterClockwise(a0, a1, b1);
++}
+ 
+-module.exports['piecewise-constant'] = function(parameters) {
+-    return createFunction(parameters, 'interval');
+-};
++function pointIntersectsBufferedLine(p, line, radius) {
++    var radiusSquared = radius * radius;
+ 
+-},{}],145:[function(require,module,exports){
+-'use strict';
++    if (line.length === 1) return p.distSqr(line[0]) < radiusSquared;
+ 
+-if (typeof module !== 'undefined' && module.exports) {
+-    module.exports = isSupported;
+-} else if (window) {
+-    window.mapboxgl = window.mapboxgl || {};
+-    window.mapboxgl.supported = isSupported;
++    for (var i = 1; i < line.length; i++) {
++        // Find line segments that have a distance <= radius^2 to p
++        // In that case, we treat the line as "containing point p".
++        var v = line[i - 1], w = line[i];
++        if (distToSegmentSquared(p, v, w) < radiusSquared) return true;
++    }
++    return false;
+ }
+ 
+-/**
+- * Test whether the current browser supports Mapbox GL JS
+- * @param {Object} options
+- * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
+- *   if the performance of Mapbox GL JS would be dramatically worse than
+- *   expected (i.e. a software renderer is would be used)
+- * @return {boolean}
+- */
+-function isSupported(options) {
+-    return !!(
+-        isBrowser() &&
+-        isArraySupported() &&
+-        isFunctionSupported() &&
+-        isObjectSupported() &&
+-        isJSONSupported() &&
+-        isWorkerSupported() &&
+-        isWebGLSupportedCached(options && options.failIfMajorPerformanceCaveat)
+-    );
++// Code from http://stackoverflow.com/a/1501725/331379.
++function distToSegmentSquared(p, v, w) {
++    var l2 = v.distSqr(w);
++    if (l2 === 0) return p.distSqr(v);
++    var t = ((p.x - v.x) * (w.x - v.x) + (p.y - v.y) * (w.y - v.y)) / l2;
++    if (t < 0) return p.distSqr(v);
++    if (t > 1) return p.distSqr(w);
++    return p.distSqr(w.sub(v)._mult(t)._add(v));
+ }
+ 
+-function isBrowser() {
+-    return typeof window !== 'undefined' && typeof document !== 'undefined';
+-}
++// point in polygon ray casting algorithm
++function multiPolygonContainsPoint(rings, p) {
++    var c = false,
++        ring, p1, p2;
+ 
+-function isArraySupported() {
+-    return (
+-        Array.prototype &&
+-        Array.prototype.every &&
+-        Array.prototype.filter &&
+-        Array.prototype.forEach &&
+-        Array.prototype.indexOf &&
+-        Array.prototype.lastIndexOf &&
+-        Array.prototype.map &&
+-        Array.prototype.some &&
+-        Array.prototype.reduce &&
+-        Array.prototype.reduceRight &&
+-        Array.isArray
+-    );
++    for (var k = 0; k < rings.length; k++) {
++        ring = rings[k];
++        for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
++            p1 = ring[i];
++            p2 = ring[j];
++            if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
++                c = !c;
++            }
++        }
++    }
++    return c;
+ }
+ 
+-function isFunctionSupported() {
+-    return Function.prototype && Function.prototype.bind;
++function polygonContainsPoint(ring, p) {
++    var c = false;
++    for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
++        var p1 = ring[i];
++        var p2 = ring[j];
++        if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
++            c = !c;
++        }
++    }
++    return c;
+ }
+ 
+-function isObjectSupported() {
+-    return (
+-        Object.keys &&
+-        Object.create &&
+-        Object.getPrototypeOf &&
+-        Object.getOwnPropertyNames &&
+-        Object.isSealed &&
+-        Object.isFrozen &&
+-        Object.isExtensible &&
+-        Object.getOwnPropertyDescriptor &&
+-        Object.defineProperty &&
+-        Object.defineProperties &&
+-        Object.seal &&
+-        Object.freeze &&
+-        Object.preventExtensions
+-    );
+-}
++},{}],165:[function(require,module,exports){
++'use strict';
+ 
+-function isJSONSupported() {
+-    return 'JSON' in window && 'parse' in JSON && 'stringify' in JSON;
+-}
++module.exports = LRUCache;
+ 
+-function isWorkerSupported() {
+-    return 'Worker' in window;
++/**
++ * A [least-recently-used cache](http://en.wikipedia.org/wiki/Cache_algorithms)
++ * with hash lookup made possible by keeping a list of keys in parallel to
++ * an array of dictionary of values
++ *
++ * @param {number} max number of permitted values
++ * @param {Function} onRemove callback called with items when they expire
++ * @private
++ */
++function LRUCache(max, onRemove) {
++    this.max = max;
++    this.onRemove = onRemove;
++    this.reset();
+ }
+ 
+-var isWebGLSupportedCache = {};
+-function isWebGLSupportedCached(failIfMajorPerformanceCaveat) {
+-
+-    if (isWebGLSupportedCache[failIfMajorPerformanceCaveat] === undefined) {
+-        isWebGLSupportedCache[failIfMajorPerformanceCaveat] = isWebGLSupported(failIfMajorPerformanceCaveat);
++/**
++ * Clear the cache
++ *
++ * @returns {LRUCache} this cache
++ * @private
++ */
++LRUCache.prototype.reset = function() {
++    for (var key in this.data) {
++        this.onRemove(this.data[key]);
+     }
+ 
+-    return isWebGLSupportedCache[failIfMajorPerformanceCaveat];
+-}
++    this.data = {};
++    this.order = [];
+ 
+-isSupported.webGLContextAttributes = {
+-    antialias: false,
+-    alpha: true,
+-    stencil: true,
+-    depth: true
++    return this;
+ };
+ 
+-function isWebGLSupported(failIfMajorPerformanceCaveat) {
+-
+-    var canvas = document.createElement('canvas');
+-
+-    var attributes = Object.create(isSupported.webGLContextAttributes);
+-    attributes.failIfMajorPerformanceCaveat = failIfMajorPerformanceCaveat;
+-
+-    if (canvas.probablySupportsContext) {
+-        return (
+-            canvas.probablySupportsContext('webgl', attributes) ||
+-            canvas.probablySupportsContext('experimental-webgl', attributes)
+-        );
++/**
++ * Add a key, value combination to the cache, trimming its size if this pushes
++ * it over max length.
++ *
++ * @param {string} key lookup key for the item
++ * @param {*} data any value
++ *
++ * @returns {LRUCache} this cache
++ * @private
++ */
++LRUCache.prototype.add = function(key, data) {
+ 
+-    } else if (canvas.supportsContext) {
+-        return (
+-            canvas.supportsContext('webgl', attributes) ||
+-            canvas.supportsContext('experimental-webgl', attributes)
+-        );
++    if (this.has(key)) {
++        this.order.splice(this.order.indexOf(key), 1);
++        this.data[key] = data;
++        this.order.push(key);
+ 
+     } else {
+-        return (
+-            canvas.getContext('webgl', attributes) ||
+-            canvas.getContext('experimental-webgl', attributes)
+-        );
+-    }
+-}
+-
+-},{}],146:[function(require,module,exports){
+-'use strict';
++        this.data[key] = data;
++        this.order.push(key);
+ 
+-var format = require('util').format;
++        if (this.order.length > this.max) {
++            var removedData = this.get(this.order[0]);
++            if (removedData) this.onRemove(removedData);
++        }
++    }
+ 
+-function ValidationError(key, value /*, message, ...*/) {
+-    this.message = (
+-        (key ? key + ': ' : '') +
+-        format.apply(format, Array.prototype.slice.call(arguments, 2))
+-    );
++    return this;
++};
+ 
+-    if (value !== null && value !== undefined && value.__line__) {
+-        this.line = value.__line__;
+-    }
+-}
++/**
++ * Determine whether the value attached to `key` is present
++ *
++ * @param {string} key the key to be looked-up
++ * @returns {boolean} whether the cache has this value
++ * @private
++ */
++LRUCache.prototype.has = function(key) {
++    return key in this.data;
++};
+ 
+-module.exports = ValidationError;
++/**
++ * List all keys in the cache
++ *
++ * @returns {Array<string>} an array of keys in this cache.
++ * @private
++ */
++LRUCache.prototype.keys = function() {
++    return this.order;
++};
+ 
+-},{"util":12}],147:[function(require,module,exports){
+-'use strict';
++/**
++ * Get the value attached to a specific key. If the key is not found,
++ * returns `null`
++ *
++ * @param {string} key the key to look up
++ * @returns {*} the data, or null if it isn't found
++ * @private
++ */
++LRUCache.prototype.get = function(key) {
++    if (!this.has(key)) { return null; }
+ 
+-module.exports = function (output) {
+-    for (var i = 1; i < arguments.length; i++) {
+-        var input = arguments[i];
+-        for (var k in input) {
+-            output[k] = input[k];
+-        }
+-    }
+-    return output;
+-};
++    var data = this.data[key];
+ 
+-},{}],148:[function(require,module,exports){
+-'use strict';
++    delete this.data[key];
++    this.order.splice(this.order.indexOf(key), 1);
+ 
+-module.exports = function getType(val) {
+-    if (val instanceof Number) {
+-        return 'number';
+-    } else if (val instanceof String) {
+-        return 'string';
+-    } else if (val instanceof Boolean) {
+-        return 'boolean';
+-    } else if (Array.isArray(val)) {
+-        return 'array';
+-    } else if (val === null) {
+-        return 'null';
+-    } else {
+-        return typeof val;
+-    }
++    return data;
+ };
+ 
+-},{}],149:[function(require,module,exports){
+-'use strict';
++/**
++ * Change the max size of the cache.
++ *
++ * @param {number} max the max size of the cache
++ * @returns {LRUCache} this cache
++ * @private
++ */
++LRUCache.prototype.setMaxSize = function(max) {
++    this.max = max;
+ 
+-// Turn jsonlint-lines-primitives objects into primitive objects
+-module.exports = function unbundle(value) {
+-    if (value instanceof Number || value instanceof String || value instanceof Boolean) {
+-        return value.valueOf();
+-    } else {
+-        return value;
++    while (this.order.length > this.max) {
++        var removedData = this.get(this.order[0]);
++        if (removedData) this.onRemove(removedData);
+     }
++
++    return this;
+ };
+ 
+-},{}],150:[function(require,module,exports){
++},{}],166:[function(require,module,exports){
+ 'use strict';
+ 
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var extend = require('../util/extend');
+-
+-// Main recursive validation function. Tracks:
+-//
+-// - key: string representing location of validation in style tree. Used only
+-//   for more informative error reporting.
+-// - value: current value from style being evaluated. May be anything from a
+-//   high level object that needs to be descended into deeper or a simple
+-//   scalar value.
+-// - valueSpec: current spec being evaluated. Tracks value.
++var config = require('./config');
++var browser = require('./browser');
+ 
+-module.exports = function validate(options) {
++function normalizeURL(url, pathPrefix, accessToken) {
++    accessToken = accessToken || config.ACCESS_TOKEN;
+ 
+-    var validateFunction = require('./validate_function');
+-    var validateObject = require('./validate_object');
+-    var VALIDATORS = {
+-        '*': function() {
+-            return [];
+-        },
+-        'array': require('./validate_array'),
+-        'boolean': require('./validate_boolean'),
+-        'number': require('./validate_number'),
+-        'color': require('./validate_color'),
+-        'constants': require('./validate_constants'),
+-        'enum': require('./validate_enum'),
+-        'filter': require('./validate_filter'),
+-        'function': require('./validate_function'),
+-        'layer': require('./validate_layer'),
+-        'object': require('./validate_object'),
+-        'source': require('./validate_source'),
+-        'string': require('./validate_string')
+-    };
++    if (!accessToken && config.REQUIRE_ACCESS_TOKEN) {
++        throw new Error('An API access token is required to use Mapbox GL. ' +
++            'See https://www.mapbox.com/developers/api/#access-tokens');
++    }
+ 
+-    var value = options.value;
+-    var valueSpec = options.valueSpec;
+-    var key = options.key;
+-    var styleSpec = options.styleSpec;
+-    var style = options.style;
++    url = url.replace(/^mapbox:\/\//, config.API_URL + pathPrefix);
++    url += url.indexOf('?') !== -1 ? '&access_token=' : '?access_token=';
+ 
+-    if (getType(value) === 'string' && value[0] === '@') {
+-        if (styleSpec.$version > 7) {
+-            return [new ValidationError(key, value, 'constants have been deprecated as of v8')];
+-        }
+-        if (!(value in style.constants)) {
+-            return [new ValidationError(key, value, 'constant "%s" not found', value)];
++    if (config.REQUIRE_ACCESS_TOKEN) {
++        if (accessToken[0] === 's') {
++            throw new Error('Use a public access token (pk.*) with Mapbox GL JS, not a secret access token (sk.*). ' +
++                'See https://www.mapbox.com/developers/api/#access-tokens');
+         }
+-        options = extend({}, options, { value: style.constants[value] });
++
++        url += accessToken;
+     }
+ 
+-    if (valueSpec.function && getType(value) === 'object') {
+-        return validateFunction(options);
++    return url;
++}
+ 
+-    } else if (valueSpec.type && VALIDATORS[valueSpec.type]) {
+-        return VALIDATORS[valueSpec.type](options);
++module.exports.normalizeStyleURL = function(url, accessToken) {
++    if (!url.match(/^mapbox:\/\/styles\//))
++        return url;
+ 
+-    } else {
+-        return validateObject(extend({}, options, {
+-            valueSpec: valueSpec.type ? styleSpec[valueSpec.type] : valueSpec
+-        }));
+-    }
++    var split = url.split('/');
++    var user = split[3];
++    var style = split[4];
++    var draft = split[5] ? '/draft' : '';
++    return normalizeURL('mapbox://' + user + '/' + style + draft, '/styles/v1/', accessToken);
+ };
+ 
+-},{"../error/validation_error":146,"../util/extend":147,"../util/get_type":148,"./validate_array":151,"./validate_boolean":152,"./validate_color":153,"./validate_constants":154,"./validate_enum":155,"./validate_filter":156,"./validate_function":157,"./validate_layer":159,"./validate_number":161,"./validate_object":162,"./validate_source":164,"./validate_string":165}],151:[function(require,module,exports){
+-'use strict';
+-
+-var getType = require('../util/get_type');
+-var validate = require('./validate');
+-var ValidationError = require('../error/validation_error');
+-
+-module.exports = function validateArray(options) {
+-    var array = options.value;
+-    var arraySpec = options.valueSpec;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var key = options.key;
+-    var validateArrayElement = options.arrayElementValidator || validate;
++module.exports.normalizeSourceURL = function(url, accessToken) {
++    if (!url.match(/^mapbox:\/\//))
++        return url;
+ 
+-    if (getType(array) !== 'array') {
+-        return [new ValidationError(key, array, 'array expected, %s found', getType(array))];
+-    }
++    // TileJSON requests need a secure flag appended to their URLs so
++    // that the server knows to send SSL-ified resource references.
++    return normalizeURL(url + '.json', '/v4/', accessToken) + '&secure';
++};
+ 
+-    if (arraySpec.length && array.length !== arraySpec.length) {
+-        return [new ValidationError(key, array, 'array length %d expected, length %d found', arraySpec.length, array.length)];
+-    }
++module.exports.normalizeGlyphsURL = function(url, accessToken) {
++    if (!url.match(/^mapbox:\/\//))
++        return url;
+ 
+-    if (arraySpec['min-length'] && array.length < arraySpec['min-length']) {
+-        return [new ValidationError(key, array, 'array length at least %d expected, length %d found', arraySpec['min-length'], array.length)];
+-    }
++    var user = url.split('/')[3];
++    return normalizeURL('mapbox://' + user + '/{fontstack}/{range}.pbf', '/fonts/v1/', accessToken);
++};
+ 
+-    var arrayElementSpec = {
+-        "type": arraySpec.value
+-    };
++module.exports.normalizeSpriteURL = function(url, format, ext, accessToken) {
++    if (!url.match(/^mapbox:\/\/sprites\//))
++        return url + format + ext;
+ 
+-    if (styleSpec.$version < 7) {
+-        arrayElementSpec.function = arraySpec.function;
+-    }
++    var split = url.split('/');
++    var user = split[3];
++    var style = split[4];
++    var draft = split[5] ? '/draft' : '';
++    return normalizeURL('mapbox://' + user + '/' + style + draft + '/sprite' + format + ext, '/styles/v1/', accessToken);
++};
+ 
+-    if (getType(arraySpec.value) === 'object') {
+-        arrayElementSpec = arraySpec.value;
+-    }
++module.exports.normalizeTileURL = function(url, sourceUrl, tileSize) {
++    if (!sourceUrl || !sourceUrl.match(/^mapbox:\/\//))
++        return url;
+ 
+-    var errors = [];
+-    for (var i = 0; i < array.length; i++) {
+-        errors = errors.concat(validateArrayElement({
+-            array: array,
+-            arrayIndex: i,
+-            value: array[i],
+-            valueSpec: arrayElementSpec,
+-            style: style,
+-            styleSpec: styleSpec,
+-            key: key + '[' + i + ']'
+-        }));
+-    }
+-    return errors;
++    // The v4 mapbox tile API supports 512x512 image tiles only when @2x
++    // is appended to the tile URL. If `tileSize: 512` is specified for
++    // a Mapbox raster source force the @2x suffix even if a non hidpi
++    // device.
++    url = url.replace(/([?&]access_token=)tk\.[^&]+/, '$1' + config.ACCESS_TOKEN);
++    var extension = browser.supportsWebp ? 'webp' : '$1';
++    return url.replace(/\.((?:png|jpg)\d*)(?=$|\?)/, browser.devicePixelRatio >= 2 || tileSize === 512 ? '@2x.' + extension : '.' + extension);
+ };
+ 
+-},{"../error/validation_error":146,"../util/get_type":148,"./validate":150}],152:[function(require,module,exports){
++},{"./browser":155,"./config":159}],167:[function(require,module,exports){
+ 'use strict';
+ 
+-var getType = require('../util/get_type');
+-var ValidationError = require('../error/validation_error');
++// Note: all "sizes" are measured in bytes
+ 
+-module.exports = function validateBoolean(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var type = getType(value);
++var assert = require('assert');
+ 
+-    if (type !== 'boolean') {
+-        return [new ValidationError(key, value, 'boolean expected, %s found', type)];
+-    }
++module.exports = StructArrayType;
+ 
+-    return [];
++var viewTypes = {
++    'Int8': Int8Array,
++    'Uint8': Uint8Array,
++    'Uint8Clamped': Uint8ClampedArray,
++    'Int16': Int16Array,
++    'Uint16': Uint16Array,
++    'Int32': Int32Array,
++    'Uint32': Uint32Array,
++    'Float32': Float32Array,
++    'Float64': Float64Array
+ };
+ 
+-},{"../error/validation_error":146,"../util/get_type":148}],153:[function(require,module,exports){
+-'use strict';
++/**
++ * @typedef StructMember
++ * @private
++ * @property {string} name
++ * @property {string} type
++ * @property {number} components
++ */
+ 
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var parseCSSColor = require('csscolorparser').parseCSSColor;
++var structArrayTypeCache = {};
+ 
+-module.exports = function validateColor(options) {
+-    var key = options.key;
+-    var value = options.value;
+-    var type = getType(value);
++/**
++ * `StructArrayType` is used to create new `StructArray` types.
++ *
++ * `StructArray` provides an abstraction over `ArrayBuffer` and `TypedArray` making it behave like
++ * an array of typed structs. A StructArray is comprised of elements. Each element has a set of
++ * members that are defined when the `StructArrayType` is created.
++ *
++ * StructArrays useful for creating large arrays that:
++ * - can be transferred from workers as a Transferable object
++ * - can be copied cheaply
++ * - use less memory for lower-precision members
++ * - can be used as buffers in WebGL.
++ *
++ * @class StructArrayType
++ * @param {Array.<StructMember>}
++ * @param options
++ * @param {number} options.alignment Use `4` to align members to 4 byte boundaries. Default is 1.
++ *
++ * @example
++ *
++ * var PointArrayType = new StructArrayType({
++ *  members: [
++ *      { type: 'Int16', name: 'x' },
++ *      { type: 'Int16', name: 'y' }
++ *  ]});
++ *
++ *  var pointArray = new PointArrayType();
++ *  pointArray.emplaceBack(10, 15);
++ *  pointArray.emplaceBack(20, 35);
++ *
++ *  point = pointArray.get(0);
++ *  assert(point.x === 10);
++ *  assert(point.y === 15);
++ *
++ * @private
++ */
++function StructArrayType(options) {
+ 
+-    if (type !== 'string') {
+-        return [new ValidationError(key, value, 'color expected, %s found', type)];
++    var key = JSON.stringify(options);
++    if (structArrayTypeCache[key]) {
++        return structArrayTypeCache[key];
+     }
+ 
+-    if (parseCSSColor(value) === null) {
+-        return [new ValidationError(key, value, 'color expected, "%s" found', value)];
++    if (options.alignment === undefined) options.alignment = 1;
++
++    function StructType() {
++        Struct.apply(this, arguments);
+     }
+ 
+-    return [];
+-};
++    StructType.prototype = Object.create(Struct.prototype);
+ 
+-},{"../error/validation_error":146,"../util/get_type":148,"csscolorparser":121}],154:[function(require,module,exports){
+-'use strict';
++    var offset = 0;
++    var maxSize = 0;
++    var usedTypes = ['Uint8'];
+ 
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
++    StructType.prototype.members = options.members.map(function(member) {
++        member = {
++            name: member.name,
++            type: member.type,
++            components: member.components || 1
++        };
+ 
+-module.exports = function validateConstants(options) {
+-    var key = options.key;
+-    var constants = options.value;
+-    var styleSpec = options.styleSpec;
++        assert(member.name.length);
++        assert(member.type in viewTypes);
+ 
+-    if (styleSpec.$version > 7) {
+-        if (constants) {
+-            return [new ValidationError(key, constants, 'constants have been deprecated as of v8')];
+-        } else {
+-            return [];
+-        }
+-    } else {
+-        var type = getType(constants);
+-        if (type !== 'object') {
+-            return [new ValidationError(key, constants, 'object expected, %s found', type)];
+-        }
++        if (usedTypes.indexOf(member.type) < 0) usedTypes.push(member.type);
+ 
+-        var errors = [];
+-        for (var constantName in constants) {
+-            if (constantName[0] !== '@') {
+-                errors.push(new ValidationError(key + '.' + constantName, constants[constantName], 'constants must start with "@"'));
+-            }
+-        }
+-        return errors;
+-    }
++        var typeSize = sizeOf(member.type);
++        maxSize = Math.max(maxSize, typeSize);
++        member.offset = offset = align(offset, Math.max(options.alignment, typeSize));
+ 
+-};
++        for (var c = 0; c < member.components; c++) {
++            Object.defineProperty(StructType.prototype, member.name + (member.components === 1 ? '' : c), {
++                get: createGetter(member, c),
++                set: createSetter(member, c)
++            });
++        }
+ 
+-},{"../error/validation_error":146,"../util/get_type":148}],155:[function(require,module,exports){
+-'use strict';
++        offset += typeSize * member.components;
+ 
+-var ValidationError = require('../error/validation_error');
+-var unbundle = require('../util/unbundle_jsonlint');
++        return member;
++    });
+ 
+-module.exports = function validateEnum(options) {
+-    var key = options.key;
+-    var value = options.value;
+-    var valueSpec = options.valueSpec;
+-    var errors = [];
++    StructType.prototype.alignment = options.alignment;
++    StructType.prototype.size = align(offset, Math.max(maxSize, options.alignment));
+ 
+-    if (valueSpec.values.indexOf(unbundle(value)) === -1) {
+-        errors.push(new ValidationError(key, value, 'expected one of [%s], %s found', valueSpec.values.join(', '), value));
++    function StructArrayType() {
++        StructArray.apply(this, arguments);
++        this.members = StructType.prototype.members;
+     }
+-    return errors;
+-};
+ 
+-},{"../error/validation_error":146,"../util/unbundle_jsonlint":149}],156:[function(require,module,exports){
+-'use strict';
++    StructArrayType.serialize = serializeStructArrayType;
+ 
+-var ValidationError = require('../error/validation_error');
+-var validateEnum = require('./validate_enum');
+-var getType = require('../util/get_type');
+-var unbundle = require('../util/unbundle_jsonlint');
++    StructArrayType.prototype = Object.create(StructArray.prototype);
++    StructArrayType.prototype.StructType = StructType;
++    StructArrayType.prototype.bytesPerElement = StructType.prototype.size;
++    StructArrayType.prototype.emplaceBack = createEmplaceBack(StructType.prototype.members, StructType.prototype.size);
++    StructArrayType.prototype._usedTypes = usedTypes;
+ 
+-module.exports = function validateFilter(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var styleSpec = options.styleSpec;
+-    var type;
+ 
+-    var errors = [];
++    structArrayTypeCache[key] = StructArrayType;
+ 
+-    if (getType(value) !== 'array') {
+-        return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
+-    }
++    return StructArrayType;
++}
+ 
+-    if (value.length < 1) {
+-        return [new ValidationError(key, value, 'filter array must have at least 1 element')];
+-    }
++/**
++ * Serialize the StructArray type. This serializes the *type* not an instance of the type.
++ * @private
++ */
++function serializeStructArrayType() {
++    return {
++        members: this.prototype.StructType.prototype.members,
++        alignment: this.prototype.StructType.prototype.alignment,
++        bytesPerElement: this.prototype.bytesPerElement
++    };
++}
+ 
+-    errors = errors.concat(validateEnum({
+-        key: key + '[0]',
+-        value: value[0],
+-        valueSpec: styleSpec.filter_operator,
+-        style: options.style,
+-        styleSpec: options.styleSpec
+-    }));
+ 
+-    switch (unbundle(value[0])) {
+-        case '<':
+-        case '<=':
+-        case '>':
+-        case '>=':
+-            if (value.length >= 2 && value[1] == '$type') {
+-                errors.push(new ValidationError(key, value, '"$type" cannot be use with operator "%s"', value[0]));
+-            }
+-        /* falls through */
+-        case '==':
+-        case '!=':
+-            if (value.length != 3) {
+-                errors.push(new ValidationError(key, value, 'filter array for operator "%s" must have 3 elements', value[0]));
+-            }
+-        /* falls through */
+-        case 'in':
+-        case '!in':
+-            if (value.length >= 2) {
+-                type = getType(value[1]);
+-                if (type !== 'string') {
+-                    errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
+-                } else if (value[1][0] === '@') {
+-                    errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
+-                }
+-            }
+-            for (var i = 2; i < value.length; i++) {
+-                type = getType(value[i]);
+-                if (value[1] == '$type') {
+-                    errors = errors.concat(validateEnum({
+-                        key: key + '[' + i + ']',
+-                        value: value[i],
+-                        valueSpec: styleSpec.geometry_type,
+-                        style: options.style,
+-                        styleSpec: options.styleSpec
+-                    }));
+-                } else if (type === 'string' && value[i][0] === '@') {
+-                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'filter value cannot be a constant'));
+-                } else if (type !== 'string' && type !== 'number' && type !== 'boolean') {
+-                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'string, number, or boolean expected, %s found', type));
+-                }
+-            }
+-            break;
++function align(offset, size) {
++    return Math.ceil(offset / size) * size;
++}
+ 
+-        case 'any':
+-        case 'all':
+-        case 'none':
+-            for (i = 1; i < value.length; i++) {
+-                errors = errors.concat(validateFilter({
+-                    key: key + '[' + i + ']',
+-                    value: value[i],
+-                    style: options.style,
+-                    styleSpec: options.styleSpec
+-                }));
+-            }
+-            break;
++function sizeOf(type) {
++    return viewTypes[type].BYTES_PER_ELEMENT;
++}
+ 
+-        case 'has':
+-        case '!has':
+-            type = getType(value[1]);
+-            if (value.length !== 2) {
+-                errors.push(new ValidationError(key, value, 'filter array for "%s" operator must have 2 elements', value[0]));
+-            } else if (type !== 'string') {
+-                errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
+-            } else if (value[1][0] === '@') {
+-                errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
+-            }
+-            break;
++function getArrayViewName(type) {
++    return type.toLowerCase();
++}
+ 
+-    }
+ 
+-    return errors;
+-};
++/*
++ * > I saw major perf gains by shortening the source of these generated methods (i.e. renaming
++ * > elementIndex to i) (likely due to v8 inlining heuristics).
++ * - lucaswoj
++ */
++function createEmplaceBack(members, bytesPerElement) {
++    var usedTypeSizes = [];
++    var argNames = [];
++    var body = '' +
++    'var i = this.length;\n' +
++    'this.resize(this.length + 1);\n';
++
++    for (var m = 0; m < members.length; m++) {
++        var member = members[m];
++        var size = sizeOf(member.type);
++
++        if (usedTypeSizes.indexOf(size) < 0) {
++            usedTypeSizes.push(size);
++            body += 'var o' + size.toFixed(0) + ' = i * ' + (bytesPerElement / size).toFixed(0) + ';\n';
++        }
++
++        for (var c = 0; c < member.components; c++) {
++            var argName = 'v' + argNames.length;
++            var index = 'o' + size.toFixed(0) + ' + ' + (member.offset / size + c).toFixed(0);
++            body += 'this.' + getArrayViewName(member.type) + '[' + index + '] = ' + argName + ';\n';
++            argNames.push(argName);
++        }
++    }
+ 
+-},{"../error/validation_error":146,"../util/get_type":148,"../util/unbundle_jsonlint":149,"./validate_enum":155}],157:[function(require,module,exports){
+-'use strict';
++    body += 'return i;';
+ 
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var validate = require('./validate');
+-var validateObject = require('./validate_object');
+-var validateArray = require('./validate_array');
+-var validateNumber = require('./validate_number');
++    return new Function(argNames, body);
++}
+ 
+-module.exports = function validateFunction(options) {
+-    var originalValueSpec = options.valueSpec;
+-    var originalValue = options.value;
++function createMemberComponentString(member, component) {
++    var elementOffset = 'this._pos' + sizeOf(member.type).toFixed(0);
++    var componentOffset = (member.offset / sizeOf(member.type) + component).toFixed(0);
++    var index = elementOffset + ' + ' + componentOffset;
++    return 'this._structArray.' + getArrayViewName(member.type) + '[' + index + ']';
+ 
+-    var stopKeyType;
++}
+ 
+-    return validateObject({
+-        key: options.key,
+-        value: options.value,
+-        valueSpec: options.styleSpec.function,
+-        style: options.style,
+-        styleSpec: options.styleSpec,
+-        objectElementValidators: { stops: validateFunctionStops }
+-    });
++function createGetter(member, c) {
++    return new Function([], 'return ' + createMemberComponentString(member, c) + ';');
++}
+ 
+-    function validateFunctionStops(options) {
+-        var errors = [];
+-        var value = options.value;
++function createSetter(member, c) {
++    return new Function(['x'], createMemberComponentString(member, c) + ' = x;');
++}
+ 
+-        errors = errors.concat(validateArray({
+-            key: options.key,
+-            value: value,
+-            valueSpec: options.valueSpec,
+-            style: options.style,
+-            styleSpec: options.styleSpec,
+-            arrayElementValidator: validateFunctionStop
+-        }));
++/**
++ * @class Struct
++ * @param {StructArray} structArray The StructArray the struct is stored in
++ * @param {number} index The index of the struct in the StructArray.
++ * @private
++ */
++function Struct(structArray, index) {
++    this._structArray = structArray;
++    this._pos1 = index * this.size;
++    this._pos2 = this._pos1 / 2;
++    this._pos4 = this._pos1 / 4;
++    this._pos8 = this._pos1 / 8;
++}
+ 
+-        if (getType(value) === 'array' && value.length === 0) {
+-            errors.push(new ValidationError(options.key, value, 'array must have at least one stop'));
+-        }
++/**
++ * @class StructArray
++ * The StructArray class is inherited by the custom StructArrayType classes created with
++ * `new StructArrayType(members, options)`.
++ * @private
++ */
++function StructArray(serialized) {
++    if (serialized !== undefined) {
++    // Create from an serialized StructArray
++        this.arrayBuffer = serialized.arrayBuffer;
++        this.length = serialized.length;
++        this.capacity = this.arrayBuffer.byteLength / this.bytesPerElement;
++        this._refreshViews();
+ 
+-        return errors;
++    // Create a new StructArray
++    } else {
++        this.capacity = -1;
++        this.resize(0);
+     }
++}
+ 
+-    function validateFunctionStop(options) {
+-        var errors = [];
+-        var value = options.value;
+-        var key = options.key;
+-
+-        if (getType(value) !== 'array') {
+-            return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
+-        }
+-
+-        if (value.length !== 2) {
+-            return [new ValidationError(key, value, 'array length %d expected, length %d found', 2, value.length)];
+-        }
++/**
++ * @property {number}
++ * @private
++ * @readonly
++ */
++StructArray.prototype.DEFAULT_CAPACITY = 128;
+ 
+-        var type = getType(value[0]);
+-        if (!stopKeyType) stopKeyType = type;
+-        if (type !== stopKeyType) {
+-            return [new ValidationError(key, value, '%s stop key type must match previous stop key type %s', type, stopKeyType)];
+-        }
++/**
++ * @property {number}
++ * @private
++ * @readonly
++ */
++StructArray.prototype.RESIZE_MULTIPLIER = 5;
+ 
+-        if (type === 'object') {
+-            if (value[0].zoom === undefined) {
+-                return [new ValidationError(key, value, 'object stop key must have zoom')];
+-            }
+-            if (value[0].value === undefined) {
+-                return [new ValidationError(key, value, 'object stop key must have value')];
+-            }
+-            errors = errors.concat(validateObject({
+-                key: key + '[0]',
+-                value: value[0],
+-                valueSpec: { zoom: {} },
+-                style: options.style,
+-                styleSpec: options.styleSpec,
+-                objectElementValidators: { zoom: validateNumber, value: validateValue }
+-            }));
+-        } else {
+-            var isZoomFunction = !originalValue.property;
+-            errors = errors.concat((isZoomFunction ? validateNumber : validateValue)({
+-                key: key + '[0]',
+-                value: value[0],
+-                valueSpec: {},
+-                style: options.style,
+-                styleSpec: options.styleSpec
+-            }));
+-        }
++/**
++ * Serialize this StructArray instance
++ * @private
++ */
++StructArray.prototype.serialize = function() {
++    this.trim();
++    return {
++        length: this.length,
++        arrayBuffer: this.arrayBuffer
++    };
++};
+ 
+-        errors = errors.concat(validate({
+-            key: key + '[1]',
+-            value: value[1],
+-            valueSpec: originalValueSpec,
+-            style: options.style,
+-            styleSpec: options.styleSpec
+-        }));
++/**
++ * Return the Struct at the given location in the array.
++ * @private
++ * @param {number} index The index of the element.
++ */
++StructArray.prototype.get = function(index) {
++    return new this.StructType(this, index);
++};
+ 
+-        if (getType(value[0]) === 'number') {
+-            if (originalValueSpec.function === 'piecewise-constant' && value[0] % 1 !== 0) {
+-                errors.push(new ValidationError(key + '[0]', value[0], 'zoom level for piecewise-constant functions must be an integer'));
+-            }
++/**
++ * Resize the array to discard unused capacity.
++ * @private
++ */
++StructArray.prototype.trim = function() {
++    if (this.length !== this.capacity) {
++        this.capacity = this.length;
++        this.arrayBuffer = this.arrayBuffer.slice(0, this.length * this.bytesPerElement);
++        this._refreshViews();
++    }
++};
+ 
+-            if (options.arrayIndex !== 0) {
+-                if (value[0] < options.array[options.arrayIndex - 1][0]) {
+-                    errors.push(new ValidationError(key + '[0]', value[0], 'array stops must appear in ascending order'));
+-                }
+-            }
+-        }
++/**
++ * Resize the array.
++ * If `n` is greater than the current length then additional elements with undefined values are added.
++ * If `n` is less than the current length then the array will be reduced to the first `n` elements.
++ * @param {number} n The new size of the array.
++ */
++StructArray.prototype.resize = function(n) {
++    this.length = n;
++    if (n > this.capacity) {
++        this.capacity = Math.max(n, Math.floor(this.capacity * this.RESIZE_MULTIPLIER), this.DEFAULT_CAPACITY);
++        this.arrayBuffer = new ArrayBuffer(this.capacity * this.bytesPerElement);
+ 
+-        return errors;
++        var oldUint8Array = this.uint8;
++        this._refreshViews();
++        if (oldUint8Array) this.uint8.set(oldUint8Array);
+     }
++};
+ 
+-    function validateValue(options) {
+-        var errors = [];
+-        var type = getType(options.value);
+-        if (type !== 'number' && type !== 'string' && type !== 'array') {
+-            errors.push(new ValidationError(options.key, options.value, 'property value must be a number, string or array'));
+-        }
+-        return errors;
++/**
++ * Create TypedArray views for the current ArrayBuffer.
++ * @private
++ */
++StructArray.prototype._refreshViews = function() {
++    for (var t = 0; t < this._usedTypes.length; t++) {
++        var type = this._usedTypes[t];
++        this[getArrayViewName(type)] = new viewTypes[type](this.arrayBuffer);
+     }
+-
+ };
+ 
+-},{"../error/validation_error":146,"../util/get_type":148,"./validate":150,"./validate_array":151,"./validate_number":161,"./validate_object":162}],158:[function(require,module,exports){
++},{"assert":6}],168:[function(require,module,exports){
+ 'use strict';
+ 
+-var ValidationError = require('../error/validation_error');
+-var validateString = require('./validate_string');
+-
+-module.exports = function(options) {
+-    var value = options.value;
+-    var key = options.key;
++module.exports = resolveTokens;
+ 
+-    var errors = validateString(options);
+-    if (errors.length) return errors;
++/**
++ * Replace tokens in a string template with values in an object
++ *
++ * @param {Object} properties a key/value relationship between tokens and replacements
++ * @param {string} text the template string
++ * @returns {string} the template with tokens replaced
++ * @private
++ */
++function resolveTokens(properties, text) {
++    return text.replace(/{([^{}()\[\]<>$=:;.,^]+)}/g, function(match, key) {
++        return key in properties ? properties[key] : '';
++    });
++}
+ 
+-    if (value.indexOf('{fontstack}') === -1) {
+-        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{fontstack}" token'));
+-    }
++},{}],169:[function(require,module,exports){
++'use strict';
+ 
+-    if (value.indexOf('{range}') === -1) {
+-        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{range}" token'));
+-    }
++var UnitBezier = require('unitbezier');
++var Coordinate = require('../geo/coordinate');
+ 
+-    return errors;
++/**
++ * Given a value `t` that varies between 0 and 1, return
++ * an interpolation function that eases between 0 and 1 in a pleasing
++ * cubic in-out fashion.
++ *
++ * @param {number} t input
++ * @returns {number} input
++ * @private
++ */
++exports.easeCubicInOut = function (t) {
++    if (t <= 0) return 0;
++    if (t >= 1) return 1;
++    var t2 = t * t,
++        t3 = t2 * t;
++    return 4 * (t < 0.5 ? t3 : 3 * (t - t2) + t3 - 0.75);
+ };
+ 
+-},{"../error/validation_error":146,"./validate_string":165}],159:[function(require,module,exports){
+-'use strict';
++/**
++ * Given given (x, y), (x1, y1) control points for a bezier curve,
++ * return a function that interpolates along that curve.
++ *
++ * @param {number} p1x control point 1 x coordinate
++ * @param {number} p1y control point 1 y coordinate
++ * @param {number} p2x control point 2 x coordinate
++ * @param {number} p2y control point 2 y coordinate
++ * @returns {Function} interpolator: receives number value, returns
++ * number value.
++ * @private
++ */
++exports.bezier = function(p1x, p1y, p2x, p2y) {
++    var bezier = new UnitBezier(p1x, p1y, p2x, p2y);
++    return function(t) {
++        return bezier.solve(t);
++    };
++};
+ 
+-var ValidationError = require('../error/validation_error');
+-var unbundle = require('../util/unbundle_jsonlint');
+-var validateObject = require('./validate_object');
+-var validateFilter = require('./validate_filter');
+-var validatePaintProperty = require('./validate_paint_property');
+-var validateLayoutProperty = require('./validate_layout_property');
+-var extend = require('../util/extend');
++/**
++ * A default bezier-curve powered easing function with
++ * control points (0.25, 0.1) and (0.25, 1)
++ *
++ * @param {number} t
++ * @returns {number} output
++ * @private
++ */
++exports.ease = exports.bezier(0.25, 0.1, 0.25, 1);
+ 
+-module.exports = function validateLayer(options) {
+-    var errors = [];
++/**
++ * Given a four-element array of numbers that represents a color in
++ * RGBA, return a version for which the RGB components are multiplied
++ * by the A (alpha) component
++ *
++ * @param {Array<number>} color color array
++ * @returns {Array<number>} premultiplied color array
++ * @private
++ */
++exports.premultiply = function (color) {
++    if (!color) return null;
++    var opacity = color[3];
++    return [
++        color[0] * opacity,
++        color[1] * opacity,
++        color[2] * opacity,
++        opacity
++    ];
++};
+ 
+-    var layer = options.value;
+-    var key = options.key;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
++/**
++ * constrain n to the given range via min + max
++ *
++ * @param {number} n value
++ * @param {number} min the minimum value to be returned
++ * @param {number} max the maximum value to be returned
++ * @returns {number} the clamped value
++ * @private
++ */
++exports.clamp = function (n, min, max) {
++    return Math.min(max, Math.max(min, n));
++};
+ 
+-    if (!layer.type && !layer.ref) {
+-        errors.push(new ValidationError(key, layer, 'either "type" or "ref" is required'));
+-    }
+-    var type = unbundle(layer.type);
+-    var ref = unbundle(layer.ref);
++/*
++ * constrain n to the given range, excluding the minimum, via modular arithmetic
++ * @param {number} n value
++ * @param {number} min the minimum value to be returned, exclusive
++ * @param {number} max the maximum value to be returned, inclusive
++ * @returns {number} constrained number
++ * @private
++ */
++exports.wrap = function (n, min, max) {
++    var d = max - min;
++    var w = ((n - min) % d + d) % d + min;
++    return (w === min) ? max : w;
++};
+ 
+-    if (layer.id) {
+-        for (var i = 0; i < options.arrayIndex; i++) {
+-            var otherLayer = style.layers[i];
+-            if (unbundle(otherLayer.id) === unbundle(layer.id)) {
+-                errors.push(new ValidationError(key, layer.id, 'duplicate layer id "%s", previously used at line %d', layer.id, otherLayer.id.__line__));
+-            }
+-        }
++/*
++ * return the first non-null and non-undefined argument to this function.
++ * @returns {*} argument
++ * @private
++ */
++exports.coalesce = function() {
++    for (var i = 0; i < arguments.length; i++) {
++        var arg = arguments[i];
++        if (arg !== null && arg !== undefined)
++            return arg;
+     }
++};
+ 
+-    if ('ref' in layer) {
+-        ['type', 'source', 'source-layer', 'filter', 'layout'].forEach(function (p) {
+-            if (p in layer) {
+-                errors.push(new ValidationError(key, layer[p], '"%s" is prohibited for ref layers', p));
+-            }
+-        });
+-
+-        var parent;
+-
+-        style.layers.forEach(function(layer) {
+-            if (layer.id == ref) parent = layer;
++/*
++ * Call an asynchronous function on an array of arguments,
++ * calling `callback` with the completed results of all calls.
++ *
++ * @param {Array<*>} array input to each call of the async function.
++ * @param {Function} fn an async function with signature (data, callback)
++ * @param {Function} callback a callback run after all async work is done.
++ * called with an array, containing the results of each async call.
++ * @returns {undefined}
++ * @private
++ */
++exports.asyncAll = function (array, fn, callback) {
++    if (!array.length) { return callback(null, []); }
++    var remaining = array.length;
++    var results = new Array(array.length);
++    var error = null;
++    array.forEach(function (item, i) {
++        fn(item, function (err, result) {
++            if (err) error = err;
++            results[i] = result;
++            if (--remaining === 0) callback(error, results);
+         });
++    });
++};
+ 
+-        if (!parent) {
+-            errors.push(new ValidationError(key, layer.ref, 'ref layer "%s" not found', ref));
+-        } else if (parent.ref) {
+-            errors.push(new ValidationError(key, layer.ref, 'ref cannot reference another ref layer'));
+-        } else {
+-            type = unbundle(parent.type);
++/*
++ * Compute the difference between the keys in one object and the keys
++ * in another object.
++ *
++ * @param {Object} obj
++ * @param {Object} other
++ * @returns {Array<string>} keys difference
++ * @private
++ */
++exports.keysDifference = function (obj, other) {
++    var difference = [];
++    for (var i in obj) {
++        if (!(i in other)) {
++            difference.push(i);
+         }
+-    } else if (type !== 'background') {
+-        if (!layer.source) {
+-            errors.push(new ValidationError(key, layer, 'missing required property "source"'));
+-        } else {
+-            var source = style.sources[layer.source];
+-            if (!source) {
+-                errors.push(new ValidationError(key, layer.source, 'source "%s" not found', layer.source));
+-            } else if (source.type == 'vector' && type == 'raster') {
+-                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a raster source', layer.id));
+-            } else if (source.type == 'raster' && type != 'raster') {
+-                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a vector source', layer.id));
+-            } else if (source.type == 'vector' && !layer['source-layer']) {
+-                errors.push(new ValidationError(key, layer, 'layer "%s" must specify a "source-layer"', layer.id));
+-            }
++    }
++    return difference;
++};
++
++/**
++ * Given a destination object and optionally many source objects,
++ * copy all properties from the source objects into the destination.
++ * The last source object given overrides properties from previous
++ * source objects.
++ * @param {Object} dest destination object
++ * @param {...Object} sources sources from which properties are pulled
++ * @returns {Object} dest
++ * @private
++ */
++exports.extend = function (dest) {
++    for (var i = 1; i < arguments.length; i++) {
++        var src = arguments[i];
++        for (var k in src) {
++            dest[k] = src[k];
+         }
+     }
++    return dest;
++};
+ 
+-    errors = errors.concat(validateObject({
+-        key: key,
+-        value: layer,
+-        valueSpec: styleSpec.layer,
+-        style: options.style,
+-        styleSpec: options.styleSpec,
+-        objectElementValidators: {
+-            filter: validateFilter,
+-            layout: function(options) {
+-                return validateObject({
+-                    layer: layer,
+-                    key: options.key,
+-                    value: options.value,
+-                    style: options.style,
+-                    styleSpec: options.styleSpec,
+-                    objectElementValidators: {
+-                        '*': function(options) {
+-                            return validateLayoutProperty(extend({layerType: type}, options));
+-                        }
+-                    }
+-                });
+-            },
+-            paint: function(options) {
+-                return validateObject({
+-                    layer: layer,
+-                    key: options.key,
+-                    value: options.value,
+-                    style: options.style,
+-                    styleSpec: options.styleSpec,
+-                    objectElementValidators: {
+-                        '*': function(options) {
+-                            return validatePaintProperty(extend({layerType: type}, options));
+-                        }
+-                    }
+-                });
+-            }
++/**
++ * Extend a destination object with all properties of the src object,
++ * using defineProperty instead of simple assignment.
++ * @param {Object} dest
++ * @param {Object} src
++ * @returns {Object} dest
++ * @private
++ */
++exports.extendAll = function (dest, src) {
++    for (var i in src) {
++        Object.defineProperty(dest, i, Object.getOwnPropertyDescriptor(src, i));
++    }
++    return dest;
++};
++
++/**
++ * Extend a parent's prototype with all properties in a properties
++ * object.
++ *
++ * @param {Object} parent
++ * @param {Object} props
++ * @returns {Object}
++ * @private
++ */
++exports.inherit = function (parent, props) {
++    var parentProto = typeof parent === 'function' ? parent.prototype : parent,
++        proto = Object.create(parentProto);
++    exports.extendAll(proto, props);
++    return proto;
++};
++
++/**
++ * Given an object and a number of properties as strings, return version
++ * of that object with only those properties.
++ *
++ * @param {Object} src the object
++ * @param {Array<string>} properties an array of property names chosen
++ * to appear on the resulting object.
++ * @returns {Object} object with limited properties.
++ * @example
++ * var foo = { name: 'Charlie', age: 10 };
++ * var justName = pick(foo, ['name']);
++ * // justName = { name: 'Charlie' }
++ * @private
++ */
++exports.pick = function (src, properties) {
++    var result = {};
++    for (var i = 0; i < properties.length; i++) {
++        var k = properties[i];
++        if (k in src) {
++            result[k] = src[k];
+         }
+-    }));
++    }
++    return result;
++};
+ 
+-    return errors;
++var id = 1;
++
++/**
++ * Return a unique numeric id, starting at 1 and incrementing with
++ * each call.
++ *
++ * @returns {number} unique numeric id.
++ * @private
++ */
++exports.uniqueId = function () {
++    return id++;
+ };
+ 
+-},{"../error/validation_error":146,"../util/extend":147,"../util/unbundle_jsonlint":149,"./validate_filter":156,"./validate_layout_property":160,"./validate_object":162,"./validate_paint_property":163}],160:[function(require,module,exports){
+-'use strict';
++/**
++ * Create a version of `fn` that is only called `time` milliseconds
++ * after its last invocation
++ *
++ * @param {Function} fn the function to be debounced
++ * @param {number} time millseconds after which the function will be invoked
++ * @returns {Function} debounced function
++ * @private
++ */
++exports.debounce = function(fn, time) {
++    var timer, args;
+ 
+-var validate = require('./validate');
+-var ValidationError = require('../error/validation_error');
++    return function() {
++        args = arguments;
++        clearTimeout(timer);
+ 
+-module.exports = function validateLayoutProperty(options) {
+-    var key = options.key;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var value = options.value;
+-    var propertyKey = options.objectKey;
+-    var layerSpec = styleSpec['layout_' + options.layerType];
++        timer = setTimeout(function() {
++            fn.apply(null, args);
++        }, time);
++    };
++};
+ 
+-    if (options.valueSpec || layerSpec[propertyKey]) {
+-        var errors = [];
++/**
++ * Given an array of member function names as strings, replace all of them
++ * with bound versions that will always refer to `context` as `this`. This
++ * is useful for classes where otherwise event bindings would reassign
++ * `this` to the evented object or some other value: this lets you ensure
++ * the `this` value always.
++ *
++ * @param {Array<string>} fns list of member function names
++ * @param {*} context the context value
++ * @returns {undefined} changes functions in-place
++ * @example
++ * function MyClass() {
++ *   bindAll(['ontimer'], this);
++ *   this.name = 'Tom';
++ * }
++ * MyClass.prototype.ontimer = function() {
++ *   alert(this.name);
++ * };
++ * var myClass = new MyClass();
++ * setTimeout(myClass.ontimer, 100);
++ * @private
++ */
++exports.bindAll = function(fns, context) {
++    fns.forEach(function(fn) {
++        context[fn] = context[fn].bind(context);
++    });
++};
+ 
+-        if (options.layerType === 'symbol') {
+-            if (propertyKey === 'icon-image' && style && !style.sprite) {
+-                errors.push(new ValidationError(key, value, 'use of "icon-image" requires a style "sprite" property'));
+-            } else if (propertyKey === 'text-field' && style && !style.glyphs) {
+-                errors.push(new ValidationError(key, value, 'use of "text-field" requires a style "glyphs" property'));
+-            }
++/**
++ * Given a class, bind all of the methods that look like handlers: that
++ * begin with _on, and bind them to the class.
++ *
++ * @param {Object} context an object with methods
++ * @private
++ */
++exports.bindHandlers = function(context) {
++    for (var i in context) {
++        if (typeof context[i] === 'function' && i.indexOf('_on') === 0) {
++            context[i] = context[i].bind(context);
+         }
++    }
++};
+ 
+-        return errors.concat(validate({
+-            key: options.key,
+-            value: value,
+-            valueSpec: options.valueSpec || layerSpec[propertyKey],
+-            style: style,
+-            styleSpec: styleSpec
+-        }));
++/**
++ * Set the 'options' property on `obj` with properties
++ * from the `options` argument. Properties in the `options`
++ * object will override existing properties.
++ *
++ * @param {Object} obj destination object
++ * @param {Object} options object of override options
++ * @returns {Object} derived options object.
++ * @private
++ */
++exports.setOptions = function(obj, options) {
++    if (!obj.hasOwnProperty('options')) {
++        obj.options = obj.options ? Object.create(obj.options) : {};
++    }
++    for (var i in options) {
++        obj.options[i] = options[i];
++    }
++    return obj.options;
++};
+ 
+-    } else {
+-        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
++/**
++ * Given a list of coordinates, get their center as a coordinate.
++ * @param {Array<Coordinate>} coords
++ * @returns {Coordinate} centerpoint
++ * @private
++ */
++exports.getCoordinatesCenter = function(coords) {
++    var minX = Infinity;
++    var minY = Infinity;
++    var maxX = -Infinity;
++    var maxY = -Infinity;
++
++    for (var i = 0; i < coords.length; i++) {
++        minX = Math.min(minX, coords[i].column);
++        minY = Math.min(minY, coords[i].row);
++        maxX = Math.max(maxX, coords[i].column);
++        maxY = Math.max(maxY, coords[i].row);
+     }
+ 
++    var dx = maxX - minX;
++    var dy = maxY - minY;
++    var dMax = Math.max(dx, dy);
++    return new Coordinate((minX + maxX) / 2, (minY + maxY) / 2, 0)
++        .zoomTo(Math.floor(-Math.log(dMax) / Math.LN2));
+ };
+ 
+-},{"../error/validation_error":146,"./validate":150}],161:[function(require,module,exports){
+-'use strict';
++/**
++ * Determine if a string ends with a particular substring
++ * @param {string} string
++ * @param {string} suffix
++ * @returns {boolean}
++ * @private
++ */
++exports.endsWith = function(string, suffix) {
++    return string.indexOf(suffix, string.length - suffix.length) !== -1;
++};
+ 
+-var getType = require('../util/get_type');
+-var ValidationError = require('../error/validation_error');
++/**
++ * Determine if a string starts with a particular substring
++ * @param {string} string
++ * @param {string} prefix
++ * @returns {boolean}
++ * @private
++ */
++exports.startsWith = function(string, prefix) {
++    return string.indexOf(prefix) === 0;
++};
+ 
+-module.exports = function validateNumber(options) {
+-    var key = options.key;
+-    var value = options.value;
+-    var valueSpec = options.valueSpec;
+-    var type = getType(value);
++/**
++ * Create an object by mapping all the values of an existing object while
++ * preserving their keys.
++ * @param {Object} input
++ * @param {Function} iterator
++ * @returns {Object}
++ * @private
++ */
++exports.mapObject = function(input, iterator, context) {
++    var output = {};
++    for (var key in input) {
++        output[key] = iterator.call(context || this, input[key], key, input);
++    }
++    return output;
++};
+ 
+-    if (type !== 'number') {
+-        return [new ValidationError(key, value, 'number expected, %s found', type)];
++/**
++ * Create an object by filtering out values of an existing object
++ * @param {Object} input
++ * @param {Function} iterator
++ * @returns {Object}
++ * @private
++ */
++exports.filterObject = function(input, iterator, context) {
++    var output = {};
++    for (var key in input) {
++        if (iterator.call(context || this, input[key], key, input)) {
++            output[key] = input[key];
++        }
+     }
++    return output;
++};
+ 
+-    if ('minimum' in valueSpec && value < valueSpec.minimum) {
+-        return [new ValidationError(key, value, '%s is less than the minimum value %s', value, valueSpec.minimum)];
++/**
++ * Deeply compares two object literals.
++ * @param {Object} obj1
++ * @param {Object} obj2
++ * @returns {boolean}
++ * @private
++ */
++exports.deepEqual = function deepEqual(a, b) {
++    if (Array.isArray(a)) {
++        if (!Array.isArray(b) || a.length !== b.length) return false;
++        for (var i = 0; i < a.length; i++) {
++            if (!deepEqual(a[i], b[i])) return false;
++        }
++        return true;
++    }
++    if (typeof a === 'object') {
++        if (!(typeof b === 'object')) return false;
++        var keys = Object.keys(a);
++        if (keys.length !== Object.keys(b).length) return false;
++        for (var key in a) {
++            if (!deepEqual(a[key], b[key])) return false;
++        }
++        return true;
+     }
++    return a === b;
++};
+ 
+-    if ('maximum' in valueSpec && value > valueSpec.maximum) {
+-        return [new ValidationError(key, value, '%s is greater than the maximum value %s', value, valueSpec.maximum)];
++/**
++ * Deeply clones two objects.
++ * @param {Object} obj1
++ * @param {Object} obj2
++ * @returns {boolean}
++ * @private
++ */
++exports.clone = function deepEqual(input) {
++    if (Array.isArray(input)) {
++        return input.map(exports.clone);
++    } else if (typeof input === 'object') {
++        return exports.mapObject(input, exports.clone);
++    } else {
++        return input;
+     }
++};
+ 
+-    return [];
++/**
++ * Check if two arrays have at least one common element.
++ * @param {Array} a
++ * @param {Array} b
++ * @returns {boolean}
++ * @private
++ */
++exports.arraysIntersect = function(a, b) {
++    for (var l = 0; l < a.length; l++) {
++        if (b.indexOf(a[l]) >= 0) return true;
++    }
++    return false;
+ };
+ 
+-},{"../error/validation_error":146,"../util/get_type":148}],162:[function(require,module,exports){
++},{"../geo/coordinate":75,"unitbezier":180}],170:[function(require,module,exports){
+ 'use strict';
+ 
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var validate = require('./validate');
+-
+-module.exports = function validateObject(options) {
+-    var key = options.key;
+-    var object = options.value;
+-    var valueSpec = options.valueSpec;
+-    var objectElementValidators = options.objectElementValidators || {};
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var errors = [];
+-
+-    var type = getType(object);
+-    if (type !== 'object') {
+-        return [new ValidationError(key, object, 'object expected, %s found', type)];
+-    }
++var VectorTileFeature = require('vector-tile').VectorTileFeature;
+ 
+-    for (var objectKey in object) {
+-        var valueSpecKey = objectKey.split('.')[0]; // treat 'paint.*' as 'paint'
+-        var objectElementSpec = valueSpec && (valueSpec[valueSpecKey] || valueSpec['*']);
+-        var objectElementValidator = objectElementValidators[valueSpecKey] || objectElementValidators['*'];
++module.exports = Feature;
+ 
+-        if (objectElementSpec || objectElementValidator) {
+-            errors = errors.concat((objectElementValidator || validate)({
+-                key: (key ? key + '.' : key) + objectKey,
+-                value: object[objectKey],
+-                valueSpec: objectElementSpec,
+-                style: style,
+-                styleSpec: styleSpec,
+-                object: object,
+-                objectKey: objectKey
+-            }));
++function Feature(vectorTileFeature, z, x, y) {
++    this._vectorTileFeature = vectorTileFeature;
++    vectorTileFeature._z = z;
++    vectorTileFeature._x = x;
++    vectorTileFeature._y = y;
+ 
+-        // tolerate root-level extra keys & arbitrary layer properties
+-        // TODO remove this layer-specific logic
+-        } else if (key !== '' && key.split('.').length !== 1) {
+-            errors.push(new ValidationError(key, object[objectKey], 'unknown property "%s"', objectKey));
+-        }
+-    }
++    this.properties = vectorTileFeature.properties;
+ 
+-    for (valueSpecKey in valueSpec) {
+-        if (valueSpec[valueSpecKey].required && valueSpec[valueSpecKey]['default'] === undefined && object[valueSpecKey] === undefined) {
+-            errors.push(new ValidationError(key, object, 'missing required property "%s"', valueSpecKey));
+-        }
++    if (vectorTileFeature._id) {
++        this.id = vectorTileFeature._id;
+     }
++}
+ 
+-    return errors;
+-};
++Feature.prototype = {
++    type: "Feature",
+ 
+-},{"../error/validation_error":146,"../util/get_type":148,"./validate":150}],163:[function(require,module,exports){
+-'use strict';
++    get geometry() {
++        if (this._geometry === undefined) {
++            var feature = this._vectorTileFeature;
++            var coords = projectCoords(
++                feature.loadGeometry(),
++                feature.extent,
++                feature._z, feature._x, feature._y);
+ 
+-var validate = require('./validate');
+-var ValidationError = require('../error/validation_error');
++            var type = VectorTileFeature.types[feature.type];
+ 
+-module.exports = function validatePaintProperty(options) {
+-    var key = options.key;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var value = options.value;
+-    var propertyKey = options.objectKey;
+-    var layerSpec = styleSpec['paint_' + options.layerType];
++            if (type === 'Point' && coords.length === 1) {
++                coords = coords[0][0];
++            } else if (type === 'Point') {
++                coords = coords[0];
++                type = 'MultiPoint';
++            } else if (type === 'LineString' && coords.length === 1) {
++                coords = coords[0];
++            } else if (type === 'LineString') {
++                type = 'MultiLineString';
++            }
+ 
+-    var transitionMatch = propertyKey.match(/^(.*)-transition$/);
++            this._geometry = {
++                type: type,
++                coordinates: coords
++            };
+ 
+-    if (transitionMatch && layerSpec[transitionMatch[1]] && layerSpec[transitionMatch[1]].transition) {
+-        return validate({
+-            key: key,
+-            value: value,
+-            valueSpec: styleSpec.transition,
+-            style: style,
+-            styleSpec: styleSpec
+-        });
++            this._vectorTileFeature = null;
++        }
++        return this._geometry;
++    },
+ 
+-    } else if (options.valueSpec || layerSpec[propertyKey]) {
+-        return validate({
+-            key: options.key,
+-            value: value,
+-            valueSpec: options.valueSpec || layerSpec[propertyKey],
+-            style: style,
+-            styleSpec: styleSpec
+-        });
++    set geometry(g) {
++        this._geometry = g;
++    },
+ 
+-    } else {
+-        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
++    toJSON: function() {
++        var json = {};
++        for (var i in this) {
++            if (i === '_geometry' || i === '_vectorTileFeature') continue;
++            json[i] = this[i];
++        }
++        return json;
+     }
+-
+ };
+ 
+-},{"../error/validation_error":146,"./validate":150}],164:[function(require,module,exports){
+-'use strict';
++function projectCoords(coords, extent, z, x, y) {
++    var size = extent * Math.pow(2, z),
++        x0 = extent * x,
++        y0 = extent * y;
++    for (var i = 0; i < coords.length; i++) {
++        var line = coords[i];
++        for (var j = 0; j < line.length; j++) {
++            var p = line[j];
++            var y2 = 180 - (p.y + y0) * 360 / size;
++            line[j] = [
++                (p.x + x0) * 360 / size - 180,
++                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
++            ];
++        }
++    }
++    return coords;
++}
+ 
+-var ValidationError = require('../error/validation_error');
+-var unbundle = require('../util/unbundle_jsonlint');
+-var validateObject = require('./validate_object');
+-var validateEnum = require('./validate_enum');
++},{"vector-tile":184}],171:[function(require,module,exports){
++(function (process){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-module.exports = function validateSource(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var styleSpec = options.styleSpec;
+-    var style = options.style;
++// resolves . and .. elements in a path array with directory names there
++// must be no slashes, empty elements, or device names (c:\) in the array
++// (so also no leading and trailing slashes - it does not distinguish
++// relative and absolute paths)
++function normalizeArray(parts, allowAboveRoot) {
++  // if the path tries to go above the root, `up` ends up > 0
++  var up = 0;
++  for (var i = parts.length - 1; i >= 0; i--) {
++    var last = parts[i];
++    if (last === '.') {
++      parts.splice(i, 1);
++    } else if (last === '..') {
++      parts.splice(i, 1);
++      up++;
++    } else if (up) {
++      parts.splice(i, 1);
++      up--;
++    }
++  }
+ 
+-    if (!value.type) {
+-        return [new ValidationError(key, value, '"type" is required')];
++  // if the path is allowed to go above the root, restore leading ..s
++  if (allowAboveRoot) {
++    for (; up--; up) {
++      parts.unshift('..');
+     }
++  }
+ 
+-    var type = unbundle(value.type);
+-    switch (type) {
+-        case 'vector':
+-        case 'raster':
+-            var errors = [];
+-            errors = errors.concat(validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_tile,
+-                style: options.style,
+-                styleSpec: styleSpec
+-            }));
+-            if ('url' in value) {
+-                for (var prop in value) {
+-                    if (['type', 'url', 'tileSize'].indexOf(prop) < 0) {
+-                        errors.push(new ValidationError(key + '.' + prop, value[prop], 'a source with a "url" property may not include a "%s" property', prop));
+-                    }
+-                }
+-            }
+-            return errors;
++  return parts;
++}
+ 
+-        case 'geojson':
+-            return validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_geojson,
+-                style: style,
+-                styleSpec: styleSpec
+-            });
++// Split a filename into [root, dir, basename, ext], unix version
++// 'root' is just a slash, or nothing.
++var splitPathRe =
++    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
++var splitPath = function(filename) {
++  return splitPathRe.exec(filename).slice(1);
++};
+ 
+-        case 'video':
+-            return validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_video,
+-                style: style,
+-                styleSpec: styleSpec
+-            });
++// path.resolve([from ...], to)
++// posix version
++exports.resolve = function() {
++  var resolvedPath = '',
++      resolvedAbsolute = false;
+ 
+-        case 'image':
+-            return validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_image,
+-                style: style,
+-                styleSpec: styleSpec
+-            });
++  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
++    var path = (i >= 0) ? arguments[i] : process.cwd();
+ 
+-        default:
+-            return validateEnum({
+-                key: key + '.type',
+-                value: value.type,
+-                valueSpec: {values: ['vector', 'raster', 'geojson', 'video', 'image']},
+-                style: style,
+-                styleSpec: styleSpec
+-            });
++    // Skip empty and invalid entries
++    if (typeof path !== 'string') {
++      throw new TypeError('Arguments to path.resolve must be strings');
++    } else if (!path) {
++      continue;
+     }
+-};
+ 
+-},{"../error/validation_error":146,"../util/unbundle_jsonlint":149,"./validate_enum":155,"./validate_object":162}],165:[function(require,module,exports){
+-'use strict';
++    resolvedPath = path + '/' + resolvedPath;
++    resolvedAbsolute = path.charAt(0) === '/';
++  }
+ 
+-var getType = require('../util/get_type');
+-var ValidationError = require('../error/validation_error');
++  // At this point the path should be resolved to a full absolute path, but
++  // handle relative paths to be safe (might happen when process.cwd() fails)
+ 
+-module.exports = function validateString(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var type = getType(value);
++  // Normalize the path
++  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
++    return !!p;
++  }), !resolvedAbsolute).join('/');
+ 
+-    if (type !== 'string') {
+-        return [new ValidationError(key, value, 'string expected, %s found', type)];
+-    }
++  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
++};
+ 
+-    return [];
++// path.normalize(path)
++// posix version
++exports.normalize = function(path) {
++  var isAbsolute = exports.isAbsolute(path),
++      trailingSlash = substr(path, -1) === '/';
++
++  // Normalize the path
++  path = normalizeArray(filter(path.split('/'), function(p) {
++    return !!p;
++  }), !isAbsolute).join('/');
++
++  if (!path && !isAbsolute) {
++    path = '.';
++  }
++  if (path && trailingSlash) {
++    path += '/';
++  }
++
++  return (isAbsolute ? '/' : '') + path;
+ };
+ 
+-},{"../error/validation_error":146,"../util/get_type":148}],166:[function(require,module,exports){
+-'use strict';
++// posix version
++exports.isAbsolute = function(path) {
++  return path.charAt(0) === '/';
++};
+ 
+-var validateConstants = require('./validate/validate_constants');
+-var validate = require('./validate/validate');
+-var latestStyleSpec = require('../reference/latest.min');
+-var validateGlyphsURL = require('./validate/validate_glyphs_url');
++// posix version
++exports.join = function() {
++  var paths = Array.prototype.slice.call(arguments, 0);
++  return exports.normalize(filter(paths, function(p, index) {
++    if (typeof p !== 'string') {
++      throw new TypeError('Arguments to path.join must be strings');
++    }
++    return p;
++  }).join('/'));
++};
+ 
+-/**
+- * Validate a Mapbox GL style against the style specification. This entrypoint,
+- * `mapbox-gl-style-spec/lib/validate_style.min`, is designed to produce as
+- * small a browserify bundle as possible by omitting unnecessary functionality
+- * and legacy style specifications.
+- *
+- * @param {Object} style The style to be validated.
+- * @param {Object} [styleSpec] The style specification to validate against.
+- *     If omitted, the latest style spec is used.
+- * @returns {Array<ValidationError>}
+- * @example
+- *   var validate = require('mapbox-gl-style-spec/lib/validate_style.min');
+- *   var errors = validate(style);
+- */
+-function validateStyleMin(style, styleSpec) {
+-    styleSpec = styleSpec || latestStyleSpec;
+ 
+-    var errors = [];
++// path.relative(from, to)
++// posix version
++exports.relative = function(from, to) {
++  from = exports.resolve(from).substr(1);
++  to = exports.resolve(to).substr(1);
+ 
+-    errors = errors.concat(validate({
+-        key: '',
+-        value: style,
+-        valueSpec: styleSpec.$root,
+-        styleSpec: styleSpec,
+-        style: style,
+-        objectElementValidators: {
+-            glyphs: validateGlyphsURL
+-        }
+-    }));
++  function trim(arr) {
++    var start = 0;
++    for (; start < arr.length; start++) {
++      if (arr[start] !== '') break;
++    }
+ 
+-    if (styleSpec.$version > 7 && style.constants) {
+-        errors = errors.concat(validateConstants({
+-            key: 'constants',
+-            value: style.constants,
+-            style: style,
+-            styleSpec: styleSpec
+-        }));
++    var end = arr.length - 1;
++    for (; end >= 0; end--) {
++      if (arr[end] !== '') break;
+     }
+ 
+-    return sortErrors(errors);
+-}
++    if (start > end) return [];
++    return arr.slice(start, end - start + 1);
++  }
+ 
+-validateStyleMin.source = wrapCleanErrors(require('./validate/validate_source'));
+-validateStyleMin.layer = wrapCleanErrors(require('./validate/validate_layer'));
+-validateStyleMin.filter = wrapCleanErrors(require('./validate/validate_filter'));
+-validateStyleMin.paintProperty = wrapCleanErrors(require('./validate/validate_paint_property'));
+-validateStyleMin.layoutProperty = wrapCleanErrors(require('./validate/validate_layout_property'));
++  var fromParts = trim(from.split('/'));
++  var toParts = trim(to.split('/'));
+ 
+-function sortErrors(errors) {
+-    return [].concat(errors).sort(function (a, b) {
+-        return a.line - b.line;
+-    });
+-}
++  var length = Math.min(fromParts.length, toParts.length);
++  var samePartsLength = length;
++  for (var i = 0; i < length; i++) {
++    if (fromParts[i] !== toParts[i]) {
++      samePartsLength = i;
++      break;
++    }
++  }
+ 
+-function wrapCleanErrors(inner) {
+-    return function() {
+-        return sortErrors(inner.apply(this, arguments));
+-    };
+-}
++  var outputParts = [];
++  for (var i = samePartsLength; i < fromParts.length; i++) {
++    outputParts.push('..');
++  }
+ 
+-module.exports = validateStyleMin;
++  outputParts = outputParts.concat(toParts.slice(samePartsLength));
+ 
+-},{"../reference/latest.min":168,"./validate/validate":150,"./validate/validate_constants":154,"./validate/validate_filter":156,"./validate/validate_glyphs_url":158,"./validate/validate_layer":159,"./validate/validate_layout_property":160,"./validate/validate_paint_property":163,"./validate/validate_source":164}],167:[function(require,module,exports){
+-module.exports = require('./v8.json');
++  return outputParts.join('/');
++};
+ 
+-},{"./v8.json":169}],168:[function(require,module,exports){
+-module.exports = require('./v8.min.json');
++exports.sep = '/';
++exports.delimiter = ':';
+ 
+-},{"./v8.min.json":170}],169:[function(require,module,exports){
+-module.exports={
+-  "$version": 8,
+-  "$root": {
+-    "version": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [8],
+-      "doc": "Stylesheet version number. Must be 8.",
+-      "example": 8
+-    },
+-    "name": {
+-      "type": "string",
+-      "doc": "A human-readable name for the style.",
+-      "example": "Bright"
+-    },
+-    "metadata": {
+-      "type": "*",
+-      "doc": "Arbitrary properties useful to track with the stylesheet, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
+-    },
+-    "center": {
+-      "type": "array",
+-      "value": "number",
+-      "doc": "Default map center in longitude and latitude.  The style center will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": [-73.9749, 40.7736]
+-    },
+-    "zoom": {
+-      "type": "number",
+-      "doc": "Default zoom level.  The style zoom will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": 12.5
+-    },
+-    "bearing": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "units": "degrees",
+-      "doc": "Default bearing, in degrees.  The style bearing will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": 29
+-    },
+-    "pitch": {
+-      "type": "number",
+-      "default": 0,
+-      "units": "degrees",
+-      "doc": "Default pitch, in degrees. Zero is perpendicular to the surface.  The style pitch will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": 50
+-    },
+-    "sources": {
+-      "required": true,
+-      "type": "sources",
+-      "doc": "Data source specifications.",
+-      "example": {
+-        "mapbox-streets": {
+-          "type": "vector",
+-          "url": "mapbox://mapbox.mapbox-streets-v6"
+-        }
+-      }
+-    },
+-    "sprite": {
+-      "type": "string",
+-      "doc": "A base URL for retrieving the sprite image and metadata. The extensions `.png`, `.json` and scale factor `@2x.png` will be automatically appended. This property is required if any layer uses the 'sprite-image' layout property.",
+-      "example": "mapbox://sprites/mapbox/bright-v8"
+-    },
+-    "glyphs": {
+-      "type": "string",
+-      "doc": "A URL template for loading signed-distance-field glyph sets in PBF format. The URL must include `{fontstack}` and `{range}` tokens. This property is required if any layer uses the 'text-field' layout property.",
+-      "example": "mapbox://fonts/mapbox/{fontstack}/{range}.pbf"
+-    },
+-    "transition": {
+-      "type": "transition",
+-      "doc": "A global transition definition to use as a default across properties.",
+-      "example": {
+-        "duration": 300,
+-        "delay": 0
+-      }
+-    },
+-    "layers": {
+-      "required": true,
+-      "type": "array",
+-      "value": "layer",
+-      "doc": "Layers will be drawn in the order of this array.",
+-      "example": [
+-        {
+-          "id": "water",
+-          "source": "mapbox-streets",
+-          "source-layer": "water",
+-          "type": "fill",
+-          "paint": {
+-            "fill-color": "#00ffff"
+-          }
+-        }
+-      ]
+-    }
+-  },
+-  "sources": {
+-    "*": {
+-      "type": "source",
+-      "doc": "Specification of a data source. For vector and raster sources, either TileJSON or a URL to a TileJSON must be provided. For GeoJSON and video sources, a URL must be provided."
+-    }
+-  },
+-  "source": [
+-    "source_tile",
+-    "source_geojson",
+-    "source_video",
+-    "source_image"
+-  ],
+-  "source_tile": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "vector",
+-        "raster"
+-      ],
+-      "doc": "The data type of the tile source."
+-    },
+-    "url": {
+-      "type": "string",
+-      "doc": "A URL to a TileJSON resource. Supported protocols are `http:`, `https:`, and `mapbox://<mapid>`."
+-    },
+-    "tiles": {
+-      "type": "array",
+-      "value": "string",
+-      "doc": "An array of one or more tile source URLs, as in the TileJSON spec."
+-    },
+-    "minzoom": {
+-      "type": "number",
+-      "default": 0,
+-      "doc": "Minimum zoom level for which tiles are available, as in the TileJSON spec."
+-    },
+-    "maxzoom": {
+-      "type": "number",
+-      "default": 22,
+-      "doc": "Maximum zoom level for which tiles are available, as in the TileJSON spec. Data from tiles at the maxzoom are used when displaying the map at higher zoom levels."
+-    },
+-    "tileSize": {
+-      "type": "number",
+-      "default": 512,
+-      "units": "pixels",
+-      "doc": "The minimum visual size to display tiles for this layer. Only configurable for raster layers."
+-    },
+-    "*": {
+-      "type": "*",
+-      "doc": "Other keys to configure the data source."
+-    }
+-  },
+-  "source_geojson": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "geojson"
+-      ],
+-      "doc": "The data type of the GeoJSON source."
+-    },
+-    "data": {
+-      "type": "*",
+-      "doc": "A URL to a GeoJSON file, or inline GeoJSON."
+-    },
+-    "maxzoom": {
+-      "type": "number",
+-      "default": 14,
+-      "doc": "Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels)."
+-    },
+-    "buffer": {
+-      "type": "number",
+-      "default": 64,
+-      "doc": "Tile buffer size on each side (higher means fewer rendering artifacts near tile edges but slower performance)."
+-    },
+-    "tolerance": {
+-      "type": "number",
+-      "default": 3,
+-      "doc": "Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance)."
+-    },
+-    "cluster": {
+-      "type": "boolean",
+-      "default": false,
+-      "doc": "If the data is a collection of point features, setting this to true clusters the points by radius into groups."
+-    },
+-    "clusterRadius": {
+-      "type": "number",
+-      "default": 400,
+-      "doc": "Radius of each cluster when clustering points, relative to 4096 tile."
+-    },
+-    "clusterMaxZoom": {
+-      "type": "number",
+-      "doc": "Max zoom to cluster points on. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered)."
+-    }
+-  },
+-  "source_video": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "video"
+-      ],
+-      "doc": "The data type of the video source."
+-    },
+-    "urls": {
+-      "required": true,
+-      "type": "array",
+-      "value": "string",
+-      "doc": "URLs to video content in order of preferred format."
+-    },
+-    "coordinates": {
+-      "required": true,
+-      "doc": "Corners of video specified in longitude, latitude pairs.",
+-      "type": "array",
+-      "length": 4,
+-      "value": {
+-        "type": "array",
+-        "length": 2,
+-        "value": "number",
+-        "doc": "A single longitude, latitude pair."
+-      }
+-    }
+-  },
+-  "source_image": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "image"
+-      ],
+-      "doc": "The data type of the image source."
+-    },
+-    "url": {
+-      "required": true,
+-      "type": "string",
+-      "doc": "URL that points to an image"
+-    },
+-    "coordinates": {
+-      "required": true,
+-      "doc": "Corners of image specified in longitude, latitude pairs.",
+-      "type": "array",
+-      "length": 4,
+-      "value": {
+-        "type": "array",
+-        "length": 2,
+-        "value": "number",
+-        "doc": "A single longitude, latitude pair."
+-      }
+-    }
+-  },
+-  "layer": {
+-    "id": {
+-      "type": "string",
+-      "doc": "Unique layer name.",
+-      "required": true
+-    },
+-    "type": {
+-      "type": "enum",
+-      "values": [
+-        "fill",
+-        "line",
+-        "symbol",
+-        "circle",
+-        "raster",
+-        "background"
+-      ],
+-      "doc": "Rendering type of this layer."
+-    },
+-    "metadata": {
+-      "type": "*",
+-      "doc": "Arbitrary properties useful to track with the layer, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
+-    },
+-    "ref": {
+-      "type": "string",
+-      "doc": "References another layer to copy `type`, `source`, `source-layer`, `minzoom`, `maxzoom`, `filter`, and `layout` properties from. This allows the layers to share processing and be more efficient."
+-    },
+-    "source": {
+-      "type": "string",
+-      "doc": "Name of a source description to be used for this layer."
+-    },
+-    "source-layer": {
+-      "type": "string",
+-      "doc": "Layer to use from a vector tile source. Required if the source supports multiple layers."
+-    },
+-    "minzoom": {
+-      "type": "number",
+-      "minimum": 0,
+-      "maximum": 22,
+-      "doc": "The minimum zoom level on which the layer gets parsed and appears on."
+-    },
+-    "maxzoom": {
+-      "type": "number",
+-      "minimum": 0,
+-      "maximum": 22,
+-      "doc": "The maximum zoom level on which the layer gets parsed and appears on."
+-    },
+-    "interactive": {
+-      "type": "boolean",
+-      "doc": "Enable querying of feature data from this layer for interactivity.",
+-      "default": false
+-    },
+-    "filter": {
+-      "type": "filter",
+-      "doc": "A expression specifying conditions on source features. Only features that match the filter are displayed."
+-    },
+-    "layout": {
+-      "type": "layout",
+-      "doc": "Layout properties for the layer."
+-    },
+-    "paint": {
+-      "type": "paint",
+-      "doc": "Default paint properties for this layer."
+-    },
+-    "paint.*": {
+-      "type": "paint",
+-      "doc": "Class-specific paint properties for this layer. The class name is the part after the first dot."
+-    }
+-  },
+-  "layout": [
+-    "layout_fill",
+-    "layout_line",
+-    "layout_circle",
+-    "layout_symbol",
+-    "layout_raster",
+-    "layout_background"
+-  ],
+-  "layout_background": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++exports.dirname = function(path) {
++  var result = splitPath(path),
++      root = result[0],
++      dir = result[1];
++
++  if (!root && !dir) {
++    // No dirname whatsoever
++    return '.';
++  }
++
++  if (dir) {
++    // It has a dirname, strip trailing slash
++    dir = dir.substr(0, dir.length - 1);
++  }
++
++  return root + dir;
++};
++
++
++exports.basename = function(path, ext) {
++  var f = splitPath(path)[2];
++  // TODO: make this comparison case-insensitive on windows?
++  if (ext && f.substr(-1 * ext.length) === ext) {
++    f = f.substr(0, f.length - ext.length);
++  }
++  return f;
++};
++
++
++exports.extname = function(path) {
++  return splitPath(path)[3];
++};
++
++function filter (xs, f) {
++    if (xs.filter) return xs.filter(f);
++    var res = [];
++    for (var i = 0; i < xs.length; i++) {
++        if (f(xs[i], i, xs)) res.push(xs[i]);
+     }
+-  },
+-  "layout_fill": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++    return res;
++}
++
++// String.prototype.substr - negative index don't work in IE8
++var substr = 'ab'.substr(-1) === 'b'
++    ? function (str, start, len) { return str.substr(start, len) }
++    : function (str, start, len) {
++        if (start < 0) start = str.length + start;
++        return str.substr(start, len);
+     }
+-  },
+-  "layout_circle": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++;
++
++}).call(this,require('_process'))
++},{"_process":175}],172:[function(require,module,exports){
++'use strict';
++
++// lightweight Buffer shim for pbf browser build
++// based on code from github.com/feross/buffer (MIT-licensed)
++
++module.exports = Buffer;
++
++var ieee754 = require('ieee754');
++
++var BufferMethods;
++
++function Buffer(length) {
++    var arr;
++    if (length && length.length) {
++        arr = length;
++        length = arr.length;
+     }
+-  },
+-  "layout_line": {
+-    "line-cap": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "butt",
+-        "round",
+-        "square"
+-      ],
+-      "default": "butt",
+-      "doc": "The display of line endings."
+-    },
+-    "line-join": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "bevel",
+-        "round",
+-        "miter"
+-      ],
+-      "default": "miter",
+-      "doc": "The display of lines when joining."
+-    },
+-    "line-miter-limit": {
+-      "type": "number",
+-      "default": 2,
+-      "function": "interpolated",
+-      "doc": "Used to automatically convert miter joins to bevel joins for sharp angles.",
+-      "requires": [
+-        {
+-          "line-join": "miter"
+-        }
+-      ]
++    var buf = new Uint8Array(length || 0);
++    if (arr) buf.set(arr);
++
++    buf.readUInt32LE = BufferMethods.readUInt32LE;
++    buf.writeUInt32LE = BufferMethods.writeUInt32LE;
++    buf.readInt32LE = BufferMethods.readInt32LE;
++    buf.writeInt32LE = BufferMethods.writeInt32LE;
++    buf.readFloatLE = BufferMethods.readFloatLE;
++    buf.writeFloatLE = BufferMethods.writeFloatLE;
++    buf.readDoubleLE = BufferMethods.readDoubleLE;
++    buf.writeDoubleLE = BufferMethods.writeDoubleLE;
++    buf.toString = BufferMethods.toString;
++    buf.write = BufferMethods.write;
++    buf.slice = BufferMethods.slice;
++    buf.copy = BufferMethods.copy;
++
++    buf._isBuffer = true;
++    return buf;
++}
++
++var lastStr, lastStrEncoded;
++
++BufferMethods = {
++    readUInt32LE: function(pos) {
++        return ((this[pos]) |
++            (this[pos + 1] << 8) |
++            (this[pos + 2] << 16)) +
++            (this[pos + 3] * 0x1000000);
+     },
+-    "line-round-limit": {
+-      "type": "number",
+-      "default": 1.05,
+-      "function": "interpolated",
+-      "doc": "Used to automatically convert round joins to miter joins for shallow angles.",
+-      "requires": [
+-        {
+-          "line-join": "round"
+-        }
+-      ]
++
++    writeUInt32LE: function(val, pos) {
++        this[pos] = val;
++        this[pos + 1] = (val >>> 8);
++        this[pos + 2] = (val >>> 16);
++        this[pos + 3] = (val >>> 24);
+     },
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
+-    }
+-  },
+-  "layout_symbol": {
+-    "symbol-placement": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-          "point",
+-          "line"
+-      ],
+-      "default": "point",
+-      "doc": "Label placement relative to its geometry. `line` can only be used on LineStrings and Polygons."
++
++    readInt32LE: function(pos) {
++        return ((this[pos]) |
++            (this[pos + 1] << 8) |
++            (this[pos + 2] << 16)) +
++            (this[pos + 3] << 24);
+     },
+-    "symbol-spacing": {
+-      "type": "number",
+-      "default": 250,
+-      "minimum": 1,
+-      "function": "interpolated",
+-      "units": "pixels",
+-      "doc": "Distance between two symbol anchors.",
+-      "requires": [
+-        {
+-          "symbol-placement": "line"
++
++    readFloatLE:  function(pos) { return ieee754.read(this, pos, true, 23, 4); },
++    readDoubleLE: function(pos) { return ieee754.read(this, pos, true, 52, 8); },
++
++    writeFloatLE:  function(val, pos) { return ieee754.write(this, val, pos, true, 23, 4); },
++    writeDoubleLE: function(val, pos) { return ieee754.write(this, val, pos, true, 52, 8); },
++
++    toString: function(encoding, start, end) {
++        var str = '',
++            tmp = '';
++
++        start = start || 0;
++        end = Math.min(this.length, end || this.length);
++
++        for (var i = start; i < end; i++) {
++            var ch = this[i];
++            if (ch <= 0x7F) {
++                str += decodeURIComponent(tmp) + String.fromCharCode(ch);
++                tmp = '';
++            } else {
++                tmp += '%' + ch.toString(16);
++            }
+         }
+-      ]
+-    },
+-    "symbol-avoid-edges": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer."
+-    },
+-    "icon-allow-overlap": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the icon will be visible even if it collides with other previously drawn symbols.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-ignore-placement": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, other symbols can be visible even if they collide with the icon.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-optional": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.",
+-      "requires": [
+-        "icon-image",
+-        "text-field"
+-      ]
+-    },
+-    "icon-rotation-alignment": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "default": "viewport",
+-      "doc": "Orientation of icon when map is rotated.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-size": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "doc": "Scale factor for icon. 1 is original size, 3 triples the size.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-image": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "doc": "A string with {tokens} replaced, referencing the data property to pull from.",
+-      "tokens": true
+-    },
+-    "icon-rotate": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "function": "interpolated",
+-      "units": "degrees",
+-      "doc": "Rotates the icon clockwise.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-padding": {
+-      "type": "number",
+-      "default": 2,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "units": "pixels",
+-      "doc": "Size of the additional area around the icon bounding box used for detecting symbol collisions.",
+-      "requires": [
+-        "icon-image"
+-      ]
++
++        str += decodeURIComponent(tmp);
++
++        return str;
+     },
+-    "icon-keep-upright": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the icon may be flipped to prevent it from being rendered upside-down.",
+-      "requires": [
+-        "icon-image",
+-        {
+-          "icon-rotation-alignment": "map"
+-        },
+-        {
+-          "symbol-placement": "line"
++
++    write: function(str, pos) {
++        var bytes = str === lastStr ? lastStrEncoded : encodeString(str);
++        for (var i = 0; i < bytes.length; i++) {
++            this[pos + i] = bytes[i];
+         }
+-      ]
+-    },
+-    "icon-offset": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "doc": "Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "text-rotation-alignment": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "default": "viewport",
+-      "doc": "Orientation of text when map is rotated.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-field": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "default": "",
+-      "tokens": true,
+-      "doc": "Value to use for a text label. Feature properties are specified using tokens like {field_name}."
+-    },
+-    "text-font": {
+-      "type": "array",
+-      "value": "string",
+-      "function": "piecewise-constant",
+-      "default": ["Open Sans Regular", "Arial Unicode MS Regular"],
+-      "doc": "Font stack to use for displaying text.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-size": {
+-      "type": "number",
+-      "default": 16,
+-      "minimum": 0,
+-      "units": "pixels",
+-      "function": "interpolated",
+-      "doc": "Font size.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-max-width": {
+-      "type": "number",
+-      "default": 10,
+-      "minimum": 0,
+-      "units": "em",
+-      "function": "interpolated",
+-      "doc": "The maximum line width for text wrapping.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-line-height": {
+-      "type": "number",
+-      "default": 1.2,
+-      "units": "em",
+-      "function": "interpolated",
+-      "doc": "Text leading value for multi-line text.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-letter-spacing": {
+-      "type": "number",
+-      "default": 0,
+-      "units": "em",
+-      "function": "interpolated",
+-      "doc": "Text tracking amount.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-justify": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "left",
+-        "center",
+-        "right"
+-      ],
+-      "default": "center",
+-      "doc": "Text justification options.",
+-      "requires": [
+-        "text-field"
+-      ]
+     },
+-    "text-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "center",
+-        "left",
+-        "right",
+-        "top",
+-        "bottom",
+-        "top-left",
+-        "top-right",
+-        "bottom-left",
+-        "bottom-right"
+-      ],
+-      "default": "center",
+-      "doc": "Part of the text placed closest to the anchor.",
+-      "requires": [
+-        "text-field"
+-      ]
++
++    slice: function(start, end) {
++        return this.subarray(start, end);
+     },
+-    "text-max-angle": {
+-      "type": "number",
+-      "default": 45,
+-      "units": "degrees",
+-      "function": "interpolated",
+-      "doc": "Maximum angle change between adjacent characters.",
+-      "requires": [
+-        "text-field",
+-        {
+-          "symbol-placement": "line"
++
++    copy: function(buf, pos) {
++        pos = pos || 0;
++        for (var i = 0; i < this.length; i++) {
++            buf[pos + i] = this[i];
+         }
+-      ]
+-    },
+-    "text-rotate": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "units": "degrees",
+-      "function": "interpolated",
+-      "doc": "Rotates the text clockwise.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-padding": {
+-      "type": "number",
+-      "default": 2,
+-      "minimum": 0,
+-      "units": "pixels",
+-      "function": "interpolated",
+-      "doc": "Size of the additional area around the text bounding box used for detecting symbol collisions.",
+-      "requires": [
+-        "text-field"
+-      ]
++    }
++};
++
++BufferMethods.writeInt32LE = BufferMethods.writeUInt32LE;
++
++Buffer.byteLength = function(str) {
++    lastStr = str;
++    lastStrEncoded = encodeString(str);
++    return lastStrEncoded.length;
++};
++
++Buffer.isBuffer = function(buf) {
++    return !!(buf && buf._isBuffer);
++};
++
++function encodeString(str) {
++    var length = str.length,
++        bytes = [];
++
++    for (var i = 0, c, lead; i < length; i++) {
++        c = str.charCodeAt(i); // code point
++
++        if (c > 0xD7FF && c < 0xE000) {
++
++            if (lead) {
++                if (c < 0xDC00) {
++                    bytes.push(0xEF, 0xBF, 0xBD);
++                    lead = c;
++                    continue;
++
++                } else {
++                    c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;
++                    lead = null;
++                }
++
++            } else {
++                if (c > 0xDBFF || (i + 1 === length)) bytes.push(0xEF, 0xBF, 0xBD);
++                else lead = c;
++
++                continue;
++            }
++
++        } else if (lead) {
++            bytes.push(0xEF, 0xBF, 0xBD);
++            lead = null;
++        }
++
++        if (c < 0x80) bytes.push(c);
++        else if (c < 0x800) bytes.push(c >> 0x6 | 0xC0, c & 0x3F | 0x80);
++        else if (c < 0x10000) bytes.push(c >> 0xC | 0xE0, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
++        else bytes.push(c >> 0x12 | 0xF0, c >> 0xC & 0x3F | 0x80, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
++    }
++    return bytes;
++}
++
++},{"ieee754":35}],173:[function(require,module,exports){
++(function (global){
++'use strict';
++
++module.exports = Pbf;
++
++var Buffer = global.Buffer || require('./buffer');
++
++function Pbf(buf) {
++    this.buf = !Buffer.isBuffer(buf) ? new Buffer(buf || 0) : buf;
++    this.pos = 0;
++    this.length = this.buf.length;
++}
++
++Pbf.Varint  = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum
++Pbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64
++Pbf.Bytes   = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields
++Pbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32
++
++var SHIFT_LEFT_32 = (1 << 16) * (1 << 16),
++    SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32,
++    POW_2_63 = Math.pow(2, 63);
++
++Pbf.prototype = {
++
++    destroy: function() {
++        this.buf = null;
+     },
+-    "text-keep-upright": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": true,
+-      "doc": "If true, the text may be flipped vertically to prevent it from being rendered upside-down.",
+-      "requires": [
+-        "text-field",
+-        {
+-          "text-rotation-alignment": "map"
+-        },
+-        {
+-          "symbol-placement": "line"
++
++    // === READING =================================================================
++
++    readFields: function(readField, result, end) {
++        end = end || this.length;
++
++        while (this.pos < end) {
++            var val = this.readVarint(),
++                tag = val >> 3,
++                startPos = this.pos;
++
++            readField(tag, result, this);
++
++            if (this.pos === startPos) this.skip(val);
+         }
+-      ]
++        return result;
+     },
+-    "text-transform": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "none",
+-        "uppercase",
+-        "lowercase"
+-      ],
+-      "default": "none",
+-      "doc": "Specifies how to capitalize text, similar to the CSS `text-transform` property.",
+-      "requires": [
+-        "text-field"
+-      ]
++
++    readMessage: function(readField, result) {
++        return this.readFields(readField, result, this.readVarint() + this.pos);
+     },
+-    "text-offset": {
+-      "type": "array",
+-      "doc": "Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
+-      "value": "number",
+-      "units": "ems",
+-      "function": "interpolated",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "requires": [
+-        "text-field"
+-      ]
++
++    readFixed32: function() {
++        var val = this.buf.readUInt32LE(this.pos);
++        this.pos += 4;
++        return val;
+     },
+-    "text-allow-overlap": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the text will be visible even if it collides with other previously drawn symbols.",
+-      "requires": [
+-        "text-field"
+-      ]
++
++    readSFixed32: function() {
++        var val = this.buf.readInt32LE(this.pos);
++        this.pos += 4;
++        return val;
+     },
+-    "text-ignore-placement": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, other symbols can be visible even if they collide with the text.",
+-      "requires": [
+-        "text-field"
+-      ]
++
++    // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)
++
++    readFixed64: function() {
++        var val = this.buf.readUInt32LE(this.pos) + this.buf.readUInt32LE(this.pos + 4) * SHIFT_LEFT_32;
++        this.pos += 8;
++        return val;
+     },
+-    "text-optional": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not.",
+-      "requires": [
+-        "text-field",
+-        "icon-image"
+-      ]
++
++    readSFixed64: function() {
++        var val = this.buf.readUInt32LE(this.pos) + this.buf.readInt32LE(this.pos + 4) * SHIFT_LEFT_32;
++        this.pos += 8;
++        return val;
+     },
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
+-    }
+-  },
+-  "layout_raster": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
+-    }
+-  },
+-  "filter": {
+-    "type": "array",
+-    "value": "*",
+-    "doc": "A filter selects specific features from a layer."
+-  },
+-  "filter_operator": {
+-    "type": "enum",
+-    "values": [
+-      "==",
+-      "!=",
+-      ">",
+-      ">=",
+-      "<",
+-      "<=",
+-      "in",
+-      "!in",
+-      "all",
+-      "any",
+-      "none",
+-      "has",
+-      "!has"
+-    ],
+-    "doc": "The filter operator."
+-  },
+-  "geometry_type": {
+-    "type": "enum",
+-    "values": [
+-      "Point",
+-      "LineString",
+-      "Polygon"
+-    ],
+-    "doc": "The geometry type for the filter to select."
+-  },
+-  "color_operation": {
+-    "type": "enum",
+-    "values": [
+-      "lighten",
+-      "saturate",
+-      "spin",
+-      "fade",
+-      "mix"
+-    ],
+-    "doc": "A color operation to apply."
+-  },
+-  "function": {
+-    "stops": {
+-      "type": "array",
+-      "required": true,
+-      "doc": "An array of stops.",
+-      "value": "function_stop"
++
++    readFloat: function() {
++        var val = this.buf.readFloatLE(this.pos);
++        this.pos += 4;
++        return val;
+     },
+-    "base": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "doc": "The exponential base of the interpolation curve. It controls the rate at which the result increases. Higher values make the result increase more towards the high end of the range. With `1` the stops are interpolated linearly."
++
++    readDouble: function() {
++        var val = this.buf.readDoubleLE(this.pos);
++        this.pos += 8;
++        return val;
+     },
+-    "property": {
+-      "type": "string",
+-      "doc": "The name of a global property or feature property to use as the function input.",
+-      "default": "$zoom"
++
++    readVarint: function() {
++        var buf = this.buf,
++            val, b;
++
++        b = buf[this.pos++]; val  =  b & 0x7f;        if (b < 0x80) return val;
++        b = buf[this.pos++]; val |= (b & 0x7f) << 7;  if (b < 0x80) return val;
++        b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;
++        b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;
++
++        return readVarintRemainder(val, this);
+     },
+-    "type": {
+-      "type": "enum",
+-      "values": [
+-          "exponential",
+-          "interval",
+-          "categorical"
+-      ],
+-      "doc": "The interpolation strategy to use in function evaluation.",
+-      "default": "exponential"
+-    }
+-  },
+-  "function_stop": {
+-    "type": "array",
+-    "minimum": 0,
+-    "maximum": 22,
+-    "value": [
+-      "number",
+-      "color"
+-    ],
+-    "length": 2,
+-    "doc": "Zoom level and value pair."
+-  },
+-  "paint": [
+-    "paint_fill",
+-    "paint_line",
+-    "paint_circle",
+-    "paint_symbol",
+-    "paint_raster",
+-    "paint_background"
+-  ],
+-  "paint_fill": {
+-    "fill-antialias": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": true,
+-      "doc": "Whether or not the fill should be antialiased."
++
++    readVarint64: function() {
++        var startPos = this.pos,
++            val = this.readVarint();
++
++        if (val < POW_2_63) return val;
++
++        var pos = this.pos - 2;
++        while (this.buf[pos] === 0xff) pos--;
++        if (pos < startPos) pos = startPos;
++
++        val = 0;
++        for (var i = 0; i < pos - startPos + 1; i++) {
++            var b = ~this.buf[startPos + i] & 0x7f;
++            val += i < 4 ? b << i * 7 : b * Math.pow(2, i * 7);
++        }
++
++        return -val - 1;
+     },
+-    "fill-opacity": {
+-      "type": "number",
+-      "function": "interpolated",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "doc": "The opacity given to the fill color.",
+-      "transition": true
++
++    readSVarint: function() {
++        var num = this.readVarint();
++        return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding
+     },
+-    "fill-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "doc": "The color of the fill.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "fill-pattern"
+-        }
+-      ]
++
++    readBoolean: function() {
++        return Boolean(this.readVarint());
+     },
+-    "fill-outline-color": {
+-      "type": "color",
+-      "doc": "The outline color of the fill. Matches the value of `fill-color` if unspecified.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "fill-pattern"
+-        },
+-        {
+-          "fill-antialias": true
+-        }
+-      ]
++
++    readString: function() {
++        var end = this.readVarint() + this.pos,
++            str = this.buf.toString('utf8', this.pos, end);
++        this.pos = end;
++        return str;
+     },
+-    "fill-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."
++
++    readBytes: function() {
++        var end = this.readVarint() + this.pos,
++            buffer = this.buf.slice(this.pos, end);
++        this.pos = end;
++        return buffer;
+     },
+-    "fill-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
+-      "default": "map",
+-      "requires": [
+-        "fill-translate"
+-      ]
++
++    // verbose for performance reasons; doesn't affect gzipped size
++
++    readPackedVarint: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readVarint());
++        return arr;
+     },
+-    "fill-pattern": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "transition": true,
+-      "doc": "Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512)."
+-    }
+-  },
+-  "paint_line": {
+-    "line-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the line will be drawn.",
+-      "function": "interpolated",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "transition": true
++    readPackedSVarint: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readSVarint());
++        return arr;
+     },
+-    "line-color": {
+-      "type": "color",
+-      "doc": "The color with which the line will be drawn.",
+-      "default": "#000000",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "line-pattern"
+-        }
+-      ]
++    readPackedBoolean: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readBoolean());
++        return arr;
+     },
+-    "line-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."
++    readPackedFloat: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readFloat());
++        return arr;
+     },
+-    "line-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
+-      "default": "map",
+-      "requires": [
+-        "line-translate"
+-      ]
++    readPackedDouble: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readDouble());
++        return arr;
+     },
+-    "line-width": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Stroke thickness."
++    readPackedFixed32: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readFixed32());
++        return arr;
+     },
+-    "line-gap-width": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "doc": "Draws a line casing outside of a line's actual path. Value indicates the width of the inner gap.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels"
++    readPackedSFixed32: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readSFixed32());
++        return arr;
+     },
+-    "line-offset": {
+-      "type": "number",
+-      "default": 0,
+-      "doc": "The line's offset perpendicular to its direction. Values may be positive or negative, where positive indicates \"rightwards\" (if you were moving in the direction of the line) and negative indicates \"leftwards.\"",
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels"
++    readPackedFixed64: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readFixed64());
++        return arr;
+     },
+-    "line-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Blur applied to the line, in pixels."
++    readPackedSFixed64: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readSFixed64());
++        return arr;
+     },
+-    "line-dasharray": {
+-      "type": "array",
+-      "value": "number",
+-      "function": "piecewise-constant",
+-      "doc": "Specifies the lengths of the alternating dashes and gaps that form the dash pattern. The lengths are later scaled by the line width. To convert a dash length to pixels, multiply the length by the current line width.",
+-      "minimum": 0,
+-      "transition": true,
+-      "units": "line widths",
+-      "requires": [
+-        {
+-          "!": "line-pattern"
+-        }
+-      ]
++
++    skip: function(val) {
++        var type = val & 0x7;
++        if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}
++        else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;
++        else if (type === Pbf.Fixed32) this.pos += 4;
++        else if (type === Pbf.Fixed64) this.pos += 8;
++        else throw new Error('Unimplemented type: ' + type);
+     },
+-    "line-pattern": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "transition": true,
+-      "doc": "Name of image in sprite to use for drawing image lines. For seamless patterns, image width must be a factor of two (2, 4, 8, ..., 512)."
+-    }
+-  },
+-  "paint_circle": {
+-    "circle-radius": {
+-      "type": "number",
+-      "default": 5,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Circle radius."
++
++    // === WRITING =================================================================
++
++    writeTag: function(tag, type) {
++        this.writeVarint((tag << 3) | type);
+     },
+-    "circle-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "doc": "The color of the circle.",
+-      "function": "interpolated",
+-      "transition": true
++
++    realloc: function(min) {
++        var length = this.length || 16;
++
++        while (length < this.pos + min) length *= 2;
++
++        if (length !== this.length) {
++            var buf = new Buffer(length);
++            this.buf.copy(buf);
++            this.buf = buf;
++            this.length = length;
++        }
+     },
+-    "circle-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "doc": "Amount to blur the circle. 1 blurs the circle such that only the centerpoint is full opacity.",
+-      "function": "interpolated",
+-      "transition": true
++
++    finish: function() {
++        this.length = this.pos;
++        this.pos = 0;
++        return this.buf.slice(0, this.length);
+     },
+-    "circle-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the circle will be drawn.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
++
++    writeFixed32: function(val) {
++        this.realloc(4);
++        this.buf.writeUInt32LE(val, this.pos);
++        this.pos += 4;
+     },
+-    "circle-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [0, 0],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."
++
++    writeSFixed32: function(val) {
++        this.realloc(4);
++        this.buf.writeInt32LE(val, this.pos);
++        this.pos += 4;
+     },
+-    "circle-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
+-      "default": "map",
+-      "requires": [
+-        "circle-translate"
+-      ]
+-    }
+-  },
+-  "paint_symbol": {
+-    "icon-opacity": {
+-      "doc": "The opacity at which the icon will be drawn.",
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        "icon-image"
+-      ]
++
++    writeFixed64: function(val) {
++        this.realloc(8);
++        this.buf.writeInt32LE(val & -1, this.pos);
++        this.buf.writeUInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
++        this.pos += 8;
+     },
+-    "icon-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "function": "interpolated",
+-      "transition": true,
+-      "doc": "The color of the icon. This can only be used with sdf icons.",
+-      "requires": [
+-        "icon-image"
+-      ]
++
++    writeSFixed64: function(val) {
++        this.realloc(8);
++        this.buf.writeInt32LE(val & -1, this.pos);
++        this.buf.writeInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
++        this.pos += 8;
+     },
+-    "icon-halo-color": {
+-      "type": "color",
+-      "default": "rgba(0, 0, 0, 0)",
+-      "function": "interpolated",
+-      "transition": true,
+-      "doc": "The color of the icon's halo. Icon halos can only be used with sdf icons.",
+-      "requires": [
+-        "icon-image"
+-      ]
++
++    writeVarint: function(val) {
++        val = +val;
++
++        if (val > 0xfffffff) {
++            writeBigVarint(val, this);
++            return;
++        }
++
++        this.realloc(4);
++
++        this.buf[this.pos++] =           val & 0x7f  | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
++        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
++        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
++        this.buf[this.pos++] =   (val >>> 7) & 0x7f;
+     },
+-    "icon-halo-width": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance of halo to the icon outline.",
+-      "requires": [
+-        "icon-image"
+-      ]
++
++    writeSVarint: function(val) {
++        this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);
+     },
+-    "icon-halo-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Fade out the halo towards the outside.",
+-      "requires": [
+-        "icon-image"
+-      ]
++
++    writeBoolean: function(val) {
++        this.writeVarint(Boolean(val));
+     },
+-    "icon-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
+-      "requires": [
+-        "icon-image"
+-      ]
++
++    writeString: function(str) {
++        str = String(str);
++        var bytes = Buffer.byteLength(str);
++        this.writeVarint(bytes);
++        this.realloc(bytes);
++        this.buf.write(str, this.pos);
++        this.pos += bytes;
+     },
+-    "icon-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
+-      "default": "map",
+-      "requires": [
+-        "icon-image",
+-        "icon-translate"
+-      ]
++
++    writeFloat: function(val) {
++        this.realloc(4);
++        this.buf.writeFloatLE(val, this.pos);
++        this.pos += 4;
+     },
+-    "text-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the text will be drawn.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        "text-field"
+-      ]
++
++    writeDouble: function(val) {
++        this.realloc(8);
++        this.buf.writeDoubleLE(val, this.pos);
++        this.pos += 8;
+     },
+-    "text-color": {
+-      "type": "color",
+-      "doc": "The color with which the text will be drawn.",
+-      "default": "#000000",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        "text-field"
+-      ]
++
++    writeBytes: function(buffer) {
++        var len = buffer.length;
++        this.writeVarint(len);
++        this.realloc(len);
++        for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];
+     },
+-    "text-halo-color": {
+-      "type": "color",
+-      "default": "rgba(0, 0, 0, 0)",
+-      "function": "interpolated",
+-      "transition": true,
+-      "doc": "The color of the text's halo, which helps it stand out from backgrounds.",
+-      "requires": [
+-        "text-field"
+-      ]
++
++    writeRawMessage: function(fn, obj) {
++        this.pos++; // reserve 1 byte for short message length
++
++        // write the message directly to the buffer and see how much was written
++        var startPos = this.pos;
++        fn(obj, this);
++        var len = this.pos - startPos;
++
++        if (len >= 0x80) reallocForRawMessage(startPos, len, this);
++
++        // finally, write the message length in the reserved place and restore the position
++        this.pos = startPos - 1;
++        this.writeVarint(len);
++        this.pos += len;
+     },
+-    "text-halo-width": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance of halo to the font outline. Max text halo width is 1/4 of the font-size.",
+-      "requires": [
+-        "text-field"
+-      ]
++
++    writeMessage: function(tag, fn, obj) {
++        this.writeTag(tag, Pbf.Bytes);
++        this.writeRawMessage(fn, obj);
+     },
+-    "text-halo-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The halo's fadeout distance towards the outside.",
+-      "requires": [
+-        "text-field"
+-      ]
++
++    writePackedVarint:   function(tag, arr) { this.writeMessage(tag, writePackedVarint, arr);   },
++    writePackedSVarint:  function(tag, arr) { this.writeMessage(tag, writePackedSVarint, arr);  },
++    writePackedBoolean:  function(tag, arr) { this.writeMessage(tag, writePackedBoolean, arr);  },
++    writePackedFloat:    function(tag, arr) { this.writeMessage(tag, writePackedFloat, arr);    },
++    writePackedDouble:   function(tag, arr) { this.writeMessage(tag, writePackedDouble, arr);   },
++    writePackedFixed32:  function(tag, arr) { this.writeMessage(tag, writePackedFixed32, arr);  },
++    writePackedSFixed32: function(tag, arr) { this.writeMessage(tag, writePackedSFixed32, arr); },
++    writePackedFixed64:  function(tag, arr) { this.writeMessage(tag, writePackedFixed64, arr);  },
++    writePackedSFixed64: function(tag, arr) { this.writeMessage(tag, writePackedSFixed64, arr); },
++
++    writeBytesField: function(tag, buffer) {
++        this.writeTag(tag, Pbf.Bytes);
++        this.writeBytes(buffer);
+     },
+-    "text-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
+-      "requires": [
+-        "text-field"
+-      ]
++    writeFixed32Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed32);
++        this.writeFixed32(val);
+     },
+-    "text-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
+-      "default": "map",
+-      "requires": [
+-        "text-field",
+-        "text-translate"
+-      ]
+-    }
+-  },
+-  "paint_raster": {
+-    "raster-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the image will be drawn.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
++    writeSFixed32Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed32);
++        this.writeSFixed32(val);
+     },
+-    "raster-hue-rotate": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "degrees",
+-      "doc": "Rotates hues around the color wheel."
++    writeFixed64Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed64);
++        this.writeFixed64(val);
+     },
+-    "raster-brightness-min": {
+-      "type": "number",
+-      "function": "interpolated",
+-      "doc": "Increase or reduce the brightness of the image. The value is the minimum brightness.",
+-      "default": 0,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "transition": true
++    writeSFixed64Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed64);
++        this.writeSFixed64(val);
+     },
+-    "raster-brightness-max": {
+-      "type": "number",
+-      "function": "interpolated",
+-      "doc": "Increase or reduce the brightness of the image. The value is the maximum brightness.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "transition": true
++    writeVarintField: function(tag, val) {
++        this.writeTag(tag, Pbf.Varint);
++        this.writeVarint(val);
+     },
+-    "raster-saturation": {
+-      "type": "number",
+-      "doc": "Increase or reduce the saturation of the image.",
+-      "default": 0,
+-      "minimum": -1,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
++    writeSVarintField: function(tag, val) {
++        this.writeTag(tag, Pbf.Varint);
++        this.writeSVarint(val);
+     },
+-    "raster-contrast": {
+-      "type": "number",
+-      "doc": "Increase or reduce the contrast of the image.",
+-      "default": 0,
+-      "minimum": -1,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
++    writeStringField: function(tag, str) {
++        this.writeTag(tag, Pbf.Bytes);
++        this.writeString(str);
+     },
+-    "raster-fade-duration": {
+-      "type": "number",
+-      "default": 300,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "milliseconds",
+-      "doc": "Fade duration when a new tile is added."
+-    }
+-  },
+-  "paint_background": {
+-    "background-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "doc": "The color with which the background will be drawn.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "background-pattern"
+-        }
+-      ]
++    writeFloatField: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed32);
++        this.writeFloat(val);
+     },
+-    "background-pattern": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "transition": true,
+-      "doc": "Name of image in sprite to use for drawing an image background. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512)."
++    writeDoubleField: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed64);
++        this.writeDouble(val);
+     },
+-    "background-opacity": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "doc": "The opacity at which the background will be drawn.",
+-      "function": "interpolated",
+-      "transition": true
++    writeBooleanField: function(tag, val) {
++        this.writeVarintField(tag, Boolean(val));
+     }
+-  },
+-  "transition": {
+-    "duration": {
+-      "type": "number",
+-      "default": 300,
+-      "minimum": 0,
+-      "units": "milliseconds",
+-      "doc": "Time allotted for transitions to complete."
+-    },
+-    "delay": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "units": "milliseconds",
+-      "doc": "Length of time before a transition begins."
++};
++
++function readVarintRemainder(val, pbf) {
++    var buf = pbf.buf, b;
++
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x10000000;         if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x800000000;        if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x40000000000;      if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x2000000000000;    if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x100000000000000;  if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x8000000000000000; if (b < 0x80) return val;
++
++    throw new Error('Expected varint not more than 10 bytes');
++}
++
++function writeBigVarint(val, pbf) {
++    pbf.realloc(10);
++
++    var maxPos = pbf.pos + 10;
++
++    while (val >= 1) {
++        if (pbf.pos >= maxPos) throw new Error('Given varint doesn\'t fit into 10 bytes');
++        var b = val & 0xff;
++        pbf.buf[pbf.pos++] = b | (val >= 0x80 ? 0x80 : 0);
++        val /= 0x80;
+     }
+-  }
+ }
+ 
+-},{}],170:[function(require,module,exports){
+-module.exports={"$version":8,"$root":{"version":{"required":true,"type":"enum","values":[8]},"name":{"type":"string"},"metadata":{"type":"*"},"center":{"type":"array","value":"number"},"zoom":{"type":"number"},"bearing":{"type":"number","default":0,"period":360,"units":"degrees"},"pitch":{"type":"number","default":0,"units":"degrees"},"sources":{"required":true,"type":"sources"},"sprite":{"type":"string"},"glyphs":{"type":"string"},"transition":{"type":"transition"},"layers":{"required":true,"type":"array","value":"layer"}},"sources":{"*":{"type":"source"}},"source":["source_tile","source_geojson","source_video","source_image"],"source_tile":{"type":{"required":true,"type":"enum","values":["vector","raster"]},"url":{"type":"string"},"tiles":{"type":"array","value":"string"},"minzoom":{"type":"number","default":0},"maxzoom":{"type":"number","default":22},"tileSize":{"type":"number","default":512,"units":"pixels"},"*":{"type":"*"}},"source_geojson":{"type":{"required":true,"type":"enum","values":["geojson"]},"data":{"type":"*"},"maxzoom":{"type":"number","default":14},"buffer":{"type":"number","default":64},"tolerance":{"type":"number","default":3},"cluster":{"type":"boolean","default":false},"clusterRadius":{"type":"number","default":400},"clusterMaxZoom":{"type":"number"}},"source_video":{"type":{"required":true,"type":"enum","values":["video"]},"urls":{"required":true,"type":"array","value":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"source_image":{"type":{"required":true,"type":"enum","values":["image"]},"url":{"required":true,"type":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"layer":{"id":{"type":"string","required":true},"type":{"type":"enum","values":["fill","line","symbol","circle","raster","background"]},"metadata":{"type":"*"},"ref":{"type":"string"},"source":{"type":"string"},"source-layer":{"type":"string"},"minzoom":{"type":"number","minimum":0,"maximum":22},"maxzoom":{"type":"number","minimum":0,"maximum":22},"interactive":{"type":"boolean","default":false},"filter":{"type":"filter"},"layout":{"type":"layout"},"paint":{"type":"paint"},"paint.*":{"type":"paint"}},"layout":["layout_fill","layout_line","layout_circle","layout_symbol","layout_raster","layout_background"],"layout_background":{"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_fill":{"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_circle":{"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_line":{"line-cap":{"type":"enum","function":"piecewise-constant","values":["butt","round","square"],"default":"butt"},"line-join":{"type":"enum","function":"piecewise-constant","values":["bevel","round","miter"],"default":"miter"},"line-miter-limit":{"type":"number","default":2,"function":"interpolated","requires":[{"line-join":"miter"}]},"line-round-limit":{"type":"number","default":1.05,"function":"interpolated","requires":[{"line-join":"round"}]},"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_symbol":{"symbol-placement":{"type":"enum","function":"piecewise-constant","values":["point","line"],"default":"point"},"symbol-spacing":{"type":"number","default":250,"minimum":1,"function":"interpolated","units":"pixels","requires":[{"symbol-placement":"line"}]},"symbol-avoid-edges":{"type":"boolean","function":"piecewise-constant","default":false},"icon-allow-overlap":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image"]},"icon-ignore-placement":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image"]},"icon-optional":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image","text-field"]},"icon-rotation-alignment":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"viewport","requires":["icon-image"]},"icon-size":{"type":"number","default":1,"minimum":0,"function":"interpolated","requires":["icon-image"]},"icon-image":{"type":"string","function":"piecewise-constant","tokens":true},"icon-rotate":{"type":"number","default":0,"period":360,"function":"interpolated","units":"degrees","requires":["icon-image"]},"icon-padding":{"type":"number","default":2,"minimum":0,"function":"interpolated","units":"pixels","requires":["icon-image"]},"icon-keep-upright":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image",{"icon-rotation-alignment":"map"},{"symbol-placement":"line"}]},"icon-offset":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","requires":["icon-image"]},"text-rotation-alignment":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"viewport","requires":["text-field"]},"text-field":{"type":"string","function":"piecewise-constant","default":"","tokens":true},"text-font":{"type":"array","value":"string","function":"piecewise-constant","default":["Open Sans Regular","Arial Unicode MS Regular"],"requires":["text-field"]},"text-size":{"type":"number","default":16,"minimum":0,"units":"pixels","function":"interpolated","requires":["text-field"]},"text-max-width":{"type":"number","default":10,"minimum":0,"units":"em","function":"interpolated","requires":["text-field"]},"text-line-height":{"type":"number","default":1.2,"units":"em","function":"interpolated","requires":["text-field"]},"text-letter-spacing":{"type":"number","default":0,"units":"em","function":"interpolated","requires":["text-field"]},"text-justify":{"type":"enum","function":"piecewise-constant","values":["left","center","right"],"default":"center","requires":["text-field"]},"text-anchor":{"type":"enum","function":"piecewise-constant","values":["center","left","right","top","bottom","top-left","top-right","bottom-left","bottom-right"],"default":"center","requires":["text-field"]},"text-max-angle":{"type":"number","default":45,"units":"degrees","function":"interpolated","requires":["text-field",{"symbol-placement":"line"}]},"text-rotate":{"type":"number","default":0,"period":360,"units":"degrees","function":"interpolated","requires":["text-field"]},"text-padding":{"type":"number","default":2,"minimum":0,"units":"pixels","function":"interpolated","requires":["text-field"]},"text-keep-upright":{"type":"boolean","function":"piecewise-constant","default":true,"requires":["text-field",{"text-rotation-alignment":"map"},{"symbol-placement":"line"}]},"text-transform":{"type":"enum","function":"piecewise-constant","values":["none","uppercase","lowercase"],"default":"none","requires":["text-field"]},"text-offset":{"type":"array","value":"number","units":"ems","function":"interpolated","length":2,"default":[0,0],"requires":["text-field"]},"text-allow-overlap":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["text-field"]},"text-ignore-placement":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["text-field"]},"text-optional":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["text-field","icon-image"]},"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_raster":{"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"filter":{"type":"array","value":"*"},"filter_operator":{"type":"enum","values":["==","!=",">",">=","<","<=","in","!in","all","any","none","has","!has"]},"geometry_type":{"type":"enum","values":["Point","LineString","Polygon"]},"color_operation":{"type":"enum","values":["lighten","saturate","spin","fade","mix"]},"function":{"stops":{"type":"array","required":true,"value":"function_stop"},"base":{"type":"number","default":1,"minimum":0},"property":{"type":"string","default":"$zoom"},"type":{"type":"enum","values":["exponential","interval","categorical"],"default":"exponential"}},"function_stop":{"type":"array","minimum":0,"maximum":22,"value":["number","color"],"length":2},"paint":["paint_fill","paint_line","paint_circle","paint_symbol","paint_raster","paint_background"],"paint_fill":{"fill-antialias":{"type":"boolean","function":"piecewise-constant","default":true},"fill-opacity":{"type":"number","function":"interpolated","default":1,"minimum":0,"maximum":1,"transition":true},"fill-color":{"type":"color","default":"#000000","function":"interpolated","transition":true,"requires":[{"!":"fill-pattern"}]},"fill-outline-color":{"type":"color","function":"interpolated","transition":true,"requires":[{"!":"fill-pattern"},{"fill-antialias":true}]},"fill-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","transition":true,"units":"pixels"},"fill-translate-anchor":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"map","requires":["fill-translate"]},"fill-pattern":{"type":"string","function":"piecewise-constant","transition":true}},"paint_line":{"line-opacity":{"type":"number","function":"interpolated","default":1,"minimum":0,"maximum":1,"transition":true},"line-color":{"type":"color","default":"#000000","function":"interpolated","transition":true,"requires":[{"!":"line-pattern"}]},"line-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","transition":true,"units":"pixels"},"line-translate-anchor":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"map","requires":["line-translate"]},"line-width":{"type":"number","default":1,"minimum":0,"function":"interpolated","transition":true,"units":"pixels"},"line-gap-width":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels"},"line-offset":{"type":"number","default":0,"function":"interpolated","transition":true,"units":"pixels"},"line-blur":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels"},"line-dasharray":{"type":"array","value":"number","function":"piecewise-constant","minimum":0,"transition":true,"units":"line widths","requires":[{"!":"line-pattern"}]},"line-pattern":{"type":"string","function":"piecewise-constant","transition":true}},"paint_circle":{"circle-radius":{"type":"number","default":5,"minimum":0,"function":"interpolated","transition":true,"units":"pixels"},"circle-color":{"type":"color","default":"#000000","function":"interpolated","transition":true},"circle-blur":{"type":"number","default":0,"function":"interpolated","transition":true},"circle-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","transition":true},"circle-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","transition":true,"units":"pixels"},"circle-translate-anchor":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"map","requires":["circle-translate"]}},"paint_symbol":{"icon-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","transition":true,"requires":["icon-image"]},"icon-color":{"type":"color","default":"#000000","function":"interpolated","transition":true,"requires":["icon-image"]},"icon-halo-color":{"type":"color","default":"rgba(0, 0, 0, 0)","function":"interpolated","transition":true,"requires":["icon-image"]},"icon-halo-width":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels","requires":["icon-image"]},"icon-halo-blur":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels","requires":["icon-image"]},"icon-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","transition":true,"units":"pixels","requires":["icon-image"]},"icon-translate-anchor":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"map","requires":["icon-image","icon-translate"]},"text-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","transition":true,"requires":["text-field"]},"text-color":{"type":"color","default":"#000000","function":"interpolated","transition":true,"requires":["text-field"]},"text-halo-color":{"type":"color","default":"rgba(0, 0, 0, 0)","function":"interpolated","transition":true,"requires":["text-field"]},"text-halo-width":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels","requires":["text-field"]},"text-halo-blur":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels","requires":["text-field"]},"text-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","transition":true,"units":"pixels","requires":["text-field"]},"text-translate-anchor":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"map","requires":["text-field","text-translate"]}},"paint_raster":{"raster-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","transition":true},"raster-hue-rotate":{"type":"number","default":0,"period":360,"function":"interpolated","transition":true,"units":"degrees"},"raster-brightness-min":{"type":"number","function":"interpolated","default":0,"minimum":0,"maximum":1,"transition":true},"raster-brightness-max":{"type":"number","function":"interpolated","default":1,"minimum":0,"maximum":1,"transition":true},"raster-saturation":{"type":"number","default":0,"minimum":-1,"maximum":1,"function":"interpolated","transition":true},"raster-contrast":{"type":"number","default":0,"minimum":-1,"maximum":1,"function":"interpolated","transition":true},"raster-fade-duration":{"type":"number","default":300,"minimum":0,"function":"interpolated","transition":true,"units":"milliseconds"}},"paint_background":{"background-color":{"type":"color","default":"#000000","function":"interpolated","transition":true,"requires":[{"!":"background-pattern"}]},"background-pattern":{"type":"string","function":"piecewise-constant","transition":true},"background-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","transition":true}},"transition":{"duration":{"type":"number","default":300,"minimum":0,"units":"milliseconds"},"delay":{"type":"number","default":0,"minimum":0,"units":"milliseconds"}}}
+-},{}],171:[function(require,module,exports){
++function reallocForRawMessage(startPos, len, pbf) {
++    var extraLen =
++        len <= 0x3fff ? 1 :
++        len <= 0x1fffff ? 2 :
++        len <= 0xfffffff ? 3 : Math.ceil(Math.log(len) / (Math.LN2 * 7));
++
++    // if 1 byte isn't enough for encoding message length, shift the data to the right
++    pbf.realloc(extraLen);
++    for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];
++}
++
++function writePackedVarint(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]);   }
++function writePackedSVarint(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]);  }
++function writePackedFloat(arr, pbf)    { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]);    }
++function writePackedDouble(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]);   }
++function writePackedBoolean(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]);  }
++function writePackedFixed32(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]);  }
++function writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }
++function writePackedFixed64(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]);  }
++function writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }
++
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"./buffer":172}],174:[function(require,module,exports){
+ 'use strict';
+ 
+-// lightweight Buffer shim for pbf browser build
+-// based on code from github.com/feross/buffer (MIT-licensed)
++module.exports = Point;
+ 
+-module.exports = Buffer;
++function Point(x, y) {
++    this.x = x;
++    this.y = y;
++}
+ 
+-var ieee754 = require('ieee754');
++Point.prototype = {
++    clone: function() { return new Point(this.x, this.y); },
+ 
+-var BufferMethods;
++    add:     function(p) { return this.clone()._add(p);     },
++    sub:     function(p) { return this.clone()._sub(p);     },
++    mult:    function(k) { return this.clone()._mult(k);    },
++    div:     function(k) { return this.clone()._div(k);     },
++    rotate:  function(a) { return this.clone()._rotate(a);  },
++    matMult: function(m) { return this.clone()._matMult(m); },
++    unit:    function() { return this.clone()._unit(); },
++    perp:    function() { return this.clone()._perp(); },
++    round:   function() { return this.clone()._round(); },
+ 
+-function Buffer(length) {
+-    var arr;
+-    if (length && length.length) {
+-        arr = length;
+-        length = arr.length;
+-    }
+-    var buf = new Uint8Array(length || 0);
+-    if (arr) buf.set(arr);
++    mag: function() {
++        return Math.sqrt(this.x * this.x + this.y * this.y);
++    },
+ 
+-    buf.readUInt32LE = BufferMethods.readUInt32LE;
+-    buf.writeUInt32LE = BufferMethods.writeUInt32LE;
+-    buf.readInt32LE = BufferMethods.readInt32LE;
+-    buf.writeInt32LE = BufferMethods.writeInt32LE;
+-    buf.readFloatLE = BufferMethods.readFloatLE;
+-    buf.writeFloatLE = BufferMethods.writeFloatLE;
+-    buf.readDoubleLE = BufferMethods.readDoubleLE;
+-    buf.writeDoubleLE = BufferMethods.writeDoubleLE;
+-    buf.toString = BufferMethods.toString;
+-    buf.write = BufferMethods.write;
+-    buf.slice = BufferMethods.slice;
+-    buf.copy = BufferMethods.copy;
++    equals: function(p) {
++        return this.x === p.x &&
++               this.y === p.y;
++    },
+ 
+-    buf._isBuffer = true;
+-    return buf;
+-}
++    dist: function(p) {
++        return Math.sqrt(this.distSqr(p));
++    },
+ 
+-var lastStr, lastStrEncoded;
++    distSqr: function(p) {
++        var dx = p.x - this.x,
++            dy = p.y - this.y;
++        return dx * dx + dy * dy;
++    },
+ 
+-BufferMethods = {
+-    readUInt32LE: function(pos) {
+-        return ((this[pos]) |
+-            (this[pos + 1] << 8) |
+-            (this[pos + 2] << 16)) +
+-            (this[pos + 3] * 0x1000000);
++    angle: function() {
++        return Math.atan2(this.y, this.x);
+     },
+ 
+-    writeUInt32LE: function(val, pos) {
+-        this[pos] = val;
+-        this[pos + 1] = (val >>> 8);
+-        this[pos + 2] = (val >>> 16);
+-        this[pos + 3] = (val >>> 24);
++    angleTo: function(b) {
++        return Math.atan2(this.y - b.y, this.x - b.x);
+     },
+ 
+-    readInt32LE: function(pos) {
+-        return ((this[pos]) |
+-            (this[pos + 1] << 8) |
+-            (this[pos + 2] << 16)) +
+-            (this[pos + 3] << 24);
++    angleWith: function(b) {
++        return this.angleWithSep(b.x, b.y);
+     },
+ 
+-    readFloatLE:  function(pos) { return ieee754.read(this, pos, true, 23, 4); },
+-    readDoubleLE: function(pos) { return ieee754.read(this, pos, true, 52, 8); },
++    // Find the angle of the two vectors, solving the formula for the cross product a x b = |a||b|sin(θ) for θ.
++    angleWithSep: function(x, y) {
++        return Math.atan2(
++            this.x * y - this.y * x,
++            this.x * x + this.y * y);
++    },
+ 
+-    writeFloatLE:  function(val, pos) { return ieee754.write(this, val, pos, true, 23, 4); },
+-    writeDoubleLE: function(val, pos) { return ieee754.write(this, val, pos, true, 52, 8); },
++    _matMult: function(m) {
++        var x = m[0] * this.x + m[1] * this.y,
++            y = m[2] * this.x + m[3] * this.y;
++        this.x = x;
++        this.y = y;
++        return this;
++    },
+ 
+-    toString: function(encoding, start, end) {
+-        var str = '',
+-            tmp = '';
++    _add: function(p) {
++        this.x += p.x;
++        this.y += p.y;
++        return this;
++    },
+ 
+-        start = start || 0;
+-        end = Math.min(this.length, end || this.length);
++    _sub: function(p) {
++        this.x -= p.x;
++        this.y -= p.y;
++        return this;
++    },
+ 
+-        for (var i = start; i < end; i++) {
+-            var ch = this[i];
+-            if (ch <= 0x7F) {
+-                str += decodeURIComponent(tmp) + String.fromCharCode(ch);
+-                tmp = '';
+-            } else {
+-                tmp += '%' + ch.toString(16);
+-            }
+-        }
++    _mult: function(k) {
++        this.x *= k;
++        this.y *= k;
++        return this;
++    },
+ 
+-        str += decodeURIComponent(tmp);
++    _div: function(k) {
++        this.x /= k;
++        this.y /= k;
++        return this;
++    },
+ 
+-        return str;
++    _unit: function() {
++        this._div(this.mag());
++        return this;
+     },
+ 
+-    write: function(str, pos) {
+-        var bytes = str === lastStr ? lastStrEncoded : encodeString(str);
+-        for (var i = 0; i < bytes.length; i++) {
+-            this[pos + i] = bytes[i];
+-        }
++    _perp: function() {
++        var y = this.y;
++        this.y = this.x;
++        this.x = -y;
++        return this;
+     },
+ 
+-    slice: function(start, end) {
+-        return this.subarray(start, end);
++    _rotate: function(angle) {
++        var cos = Math.cos(angle),
++            sin = Math.sin(angle),
++            x = cos * this.x - sin * this.y,
++            y = sin * this.x + cos * this.y;
++        this.x = x;
++        this.y = y;
++        return this;
+     },
+ 
+-    copy: function(buf, pos) {
+-        pos = pos || 0;
+-        for (var i = 0; i < this.length; i++) {
+-            buf[pos + i] = this[i];
+-        }
++    _round: function() {
++        this.x = Math.round(this.x);
++        this.y = Math.round(this.y);
++        return this;
+     }
+ };
+ 
+-BufferMethods.writeInt32LE = BufferMethods.writeUInt32LE;
+-
+-Buffer.byteLength = function(str) {
+-    lastStr = str;
+-    lastStrEncoded = encodeString(str);
+-    return lastStrEncoded.length;
++// constructs Point from an array if necessary
++Point.convert = function (a) {
++    if (a instanceof Point) {
++        return a;
++    }
++    if (Array.isArray(a)) {
++        return new Point(a[0], a[1]);
++    }
++    return a;
+ };
+ 
+-Buffer.isBuffer = function(buf) {
+-    return !!(buf && buf._isBuffer);
+-};
++},{}],175:[function(require,module,exports){
++// shim for using process in browser
++var process = module.exports = {};
+ 
+-function encodeString(str) {
+-    var length = str.length,
+-        bytes = [];
++// cached from whatever global is present so that test runners that stub it
++// don't break things.  But we need to wrap it in a try catch in case it is
++// wrapped in strict mode code which doesn't define any globals.  It's inside a
++// function because try/catches deoptimize in certain engines.
+ 
+-    for (var i = 0, c, lead; i < length; i++) {
+-        c = str.charCodeAt(i); // code point
++var cachedSetTimeout;
++var cachedClearTimeout;
+ 
+-        if (c > 0xD7FF && c < 0xE000) {
++function defaultSetTimout() {
++    throw new Error('setTimeout has not been defined');
++}
++function defaultClearTimeout () {
++    throw new Error('clearTimeout has not been defined');
++}
++(function () {
++    try {
++        if (typeof setTimeout === 'function') {
++            cachedSetTimeout = setTimeout;
++        } else {
++            cachedSetTimeout = defaultSetTimout;
++        }
++    } catch (e) {
++        cachedSetTimeout = defaultSetTimout;
++    }
++    try {
++        if (typeof clearTimeout === 'function') {
++            cachedClearTimeout = clearTimeout;
++        } else {
++            cachedClearTimeout = defaultClearTimeout;
++        }
++    } catch (e) {
++        cachedClearTimeout = defaultClearTimeout;
++    }
++} ())
++function runTimeout(fun) {
++    if (cachedSetTimeout === setTimeout) {
++        //normal enviroments in sane situations
++        return setTimeout(fun, 0);
++    }
++    // if setTimeout wasn't available but was latter defined
++    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
++        cachedSetTimeout = setTimeout;
++        return setTimeout(fun, 0);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedSetTimeout(fun, 0);
++    } catch(e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
++            return cachedSetTimeout.call(null, fun, 0);
++        } catch(e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
++            return cachedSetTimeout.call(this, fun, 0);
++        }
++    }
+ 
+-            if (lead) {
+-                if (c < 0xDC00) {
+-                    bytes.push(0xEF, 0xBF, 0xBD);
+-                    lead = c;
+-                    continue;
+ 
+-                } else {
+-                    c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;
+-                    lead = null;
+-                }
++}
++function runClearTimeout(marker) {
++    if (cachedClearTimeout === clearTimeout) {
++        //normal enviroments in sane situations
++        return clearTimeout(marker);
++    }
++    // if clearTimeout wasn't available but was latter defined
++    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
++        cachedClearTimeout = clearTimeout;
++        return clearTimeout(marker);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedClearTimeout(marker);
++    } catch (e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
++            return cachedClearTimeout.call(null, marker);
++        } catch (e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
++            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
++            return cachedClearTimeout.call(this, marker);
++        }
++    }
+ 
+-            } else {
+-                if (c > 0xDBFF || (i + 1 === length)) bytes.push(0xEF, 0xBF, 0xBD);
+-                else lead = c;
+ 
+-                continue;
+-            }
+ 
+-        } else if (lead) {
+-            bytes.push(0xEF, 0xBF, 0xBD);
+-            lead = null;
+-        }
++}
++var queue = [];
++var draining = false;
++var currentQueue;
++var queueIndex = -1;
+ 
+-        if (c < 0x80) bytes.push(c);
+-        else if (c < 0x800) bytes.push(c >> 0x6 | 0xC0, c & 0x3F | 0x80);
+-        else if (c < 0x10000) bytes.push(c >> 0xC | 0xE0, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
+-        else bytes.push(c >> 0x12 | 0xF0, c >> 0xC & 0x3F | 0x80, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
++function cleanUpNextTick() {
++    if (!draining || !currentQueue) {
++        return;
++    }
++    draining = false;
++    if (currentQueue.length) {
++        queue = currentQueue.concat(queue);
++    } else {
++        queueIndex = -1;
++    }
++    if (queue.length) {
++        drainQueue();
+     }
+-    return bytes;
+ }
+ 
+-},{"ieee754":173}],172:[function(require,module,exports){
+-(function (global){
+-'use strict';
++function drainQueue() {
++    if (draining) {
++        return;
++    }
++    var timeout = runTimeout(cleanUpNextTick);
++    draining = true;
+ 
+-module.exports = Pbf;
++    var len = queue.length;
++    while(len) {
++        currentQueue = queue;
++        queue = [];
++        while (++queueIndex < len) {
++            if (currentQueue) {
++                currentQueue[queueIndex].run();
++            }
++        }
++        queueIndex = -1;
++        len = queue.length;
++    }
++    currentQueue = null;
++    draining = false;
++    runClearTimeout(timeout);
++}
+ 
+-var Buffer = global.Buffer || require('./buffer');
++process.nextTick = function (fun) {
++    var args = new Array(arguments.length - 1);
++    if (arguments.length > 1) {
++        for (var i = 1; i < arguments.length; i++) {
++            args[i - 1] = arguments[i];
++        }
++    }
++    queue.push(new Item(fun, args));
++    if (queue.length === 1 && !draining) {
++        runTimeout(drainQueue);
++    }
++};
+ 
+-function Pbf(buf) {
+-    this.buf = !Buffer.isBuffer(buf) ? new Buffer(buf || 0) : buf;
+-    this.pos = 0;
+-    this.length = this.buf.length;
++// v8 likes predictible objects
++function Item(fun, array) {
++    this.fun = fun;
++    this.array = array;
+ }
++Item.prototype.run = function () {
++    this.fun.apply(null, this.array);
++};
++process.title = 'browser';
++process.browser = true;
++process.env = {};
++process.argv = [];
++process.version = ''; // empty string to avoid regexp issues
++process.versions = {};
+ 
+-Pbf.Varint  = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum
+-Pbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64
+-Pbf.Bytes   = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields
+-Pbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32
++function noop() {}
+ 
+-var SHIFT_LEFT_32 = (1 << 16) * (1 << 16),
+-    SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32,
+-    POW_2_63 = Math.pow(2, 63);
++process.on = noop;
++process.addListener = noop;
++process.once = noop;
++process.off = noop;
++process.removeListener = noop;
++process.removeAllListeners = noop;
++process.emit = noop;
+ 
+-Pbf.prototype = {
++process.binding = function (name) {
++    throw new Error('process.binding is not supported');
++};
+ 
+-    destroy: function() {
+-        this.buf = null;
+-    },
++process.cwd = function () { return '/' };
++process.chdir = function (dir) {
++    throw new Error('process.chdir is not supported');
++};
++process.umask = function() { return 0; };
+ 
+-    // === READING =================================================================
++},{}],176:[function(require,module,exports){
++// Copyright 2014 Simon Lydell
++// X11 (“MIT”) Licensed. (See LICENSE.)
++
++void (function(root, factory) {
++  if (typeof define === "function" && define.amd) {
++    define(factory)
++  } else if (typeof exports === "object") {
++    module.exports = factory()
++  } else {
++    root.resolveUrl = factory()
++  }
++}(this, function() {
++
++  function resolveUrl(/* ...urls */) {
++    var numUrls = arguments.length
++
++    if (numUrls === 0) {
++      throw new Error("resolveUrl requires at least one argument; got none.")
++    }
++
++    var base = document.createElement("base")
++    base.href = arguments[0]
++
++    if (numUrls === 1) {
++      return base.href
++    }
++
++    var head = document.getElementsByTagName("head")[0]
++    head.insertBefore(base, head.firstChild)
++
++    var a = document.createElement("a")
++    var resolved
++
++    for (var index = 1; index < numUrls; index++) {
++      a.href = arguments[index]
++      resolved = a.href
++      base.href = resolved
++    }
++
++    head.removeChild(base)
++
++    return resolved
++  }
++
++  return resolveUrl
++
++}));
+ 
+-    readFields: function(readField, result, end) {
+-        end = end || this.length;
++},{}],177:[function(require,module,exports){
++(function (global, factory) {
++    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
++    typeof define === 'function' && define.amd ? define(factory) :
++    (global.ShelfPack = factory());
++}(this, function () {
+ 
+-        while (this.pos < end) {
+-            var val = this.readVarint(),
+-                tag = val >> 3,
+-                startPos = this.pos;
++/**
++ * Create a new ShelfPack bin allocator.
++ *
++ * Uses the Shelf Best Height Fit algorithm from
++ * http://clb.demon.fi/files/RectangleBinPack.pdf
++ *
++ * @class  ShelfPack
++ * @param  {number}  [w=64]  Initial width of the sprite
++ * @param  {number}  [h=64]  Initial width of the sprite
++ * @param  {Object}  [options]
++ * @param  {boolean} [options.autoResize=false]  If `true`, the sprite will automatically grow
++ * @example
++ * var sprite = new ShelfPack(64, 64, { autoResize: false });
++ */
++function ShelfPack(w, h, options) {
++    options = options || {};
++    this.w = w || 64;
++    this.h = h || 64;
++    this.autoResize = !!options.autoResize;
++    this.shelves = [];
++    this.stats = {};
++    this.count = function(h) {
++        this.stats[h] = (this.stats[h] | 0) + 1;
++    };
++}
+ 
+-            readField(tag, result, this);
++/**
++ * Batch pack multiple bins into the sprite.
++ *
++ * @param   {Array}   bins Array of requested bins - each object should have `width`, `height` (or `w`, `h`) properties
++ * @param   {Object}  [options]
++ * @param   {boolean} [options.inPlace=false] If `true`, the supplied bin objects will be updated inplace with `x` and `y` properties
++ * @returns {Array}   Array of allocated bins - each bin is an object with `x`, `y`, `w`, `h` properties
++ * @example
++ * var bins = [
++ *     { id: 'a', width: 12, height: 12 },
++ *     { id: 'b', width: 12, height: 16 },
++ *     { id: 'c', width: 12, height: 24 }
++ * ];
++ * var results = sprite.pack(bins, { inPlace: false });
++ */
++ShelfPack.prototype.pack = function(bins, options) {
++    bins = [].concat(bins);
++    options = options || {};
+ 
+-            if (this.pos === startPos) this.skip(val);
++    var results = [],
++        w, h, allocation;
++
++    for (var i = 0; i < bins.length; i++) {
++        w = bins[i].w || bins[i].width;
++        h = bins[i].h || bins[i].height;
++        if (w && h) {
++            allocation = this.packOne(w, h);
++            if (!allocation) {
++                continue;
++            }
++            if (options.inPlace) {
++                bins[i].x = allocation.x;
++                bins[i].y = allocation.y;
++            }
++            results.push(allocation);
+         }
+-        return result;
+-    },
++    }
+ 
+-    readMessage: function(readField, result) {
+-        return this.readFields(readField, result, this.readVarint() + this.pos);
+-    },
++    // Shrink the width/height of the sprite to the bare minimum.
++    // Since shelf-pack doubles first width, then height when running out of shelf space
++    // this can result in fairly large unused space both in width and height if that happens
++    // towards the end of bin packing.
++    if (this.shelves.length > 0) {
++        var w2 = 0;
++        var h2 = 0;
+ 
+-    readFixed32: function() {
+-        var val = this.buf.readUInt32LE(this.pos);
+-        this.pos += 4;
+-        return val;
+-    },
++        for (var j = 0; j < this.shelves.length; j++) {
++            var shelf = this.shelves[j];
++            h2 += shelf.h;
++            w2 = Math.max(shelf.w - shelf.free, w2);
++        }
+ 
+-    readSFixed32: function() {
+-        var val = this.buf.readInt32LE(this.pos);
+-        this.pos += 4;
+-        return val;
+-    },
++        this.resize(w2, h2);
++    }
+ 
+-    // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)
++    return results;
++};
+ 
+-    readFixed64: function() {
+-        var val = this.buf.readUInt32LE(this.pos) + this.buf.readUInt32LE(this.pos + 4) * SHIFT_LEFT_32;
+-        this.pos += 8;
+-        return val;
+-    },
++/**
++ * Pack a single bin into the sprite.
++ *
++ * @param   {number}  w   Width of the bin to allocate
++ * @param   {number}  h   Height of the bin to allocate
++ * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
++ * @example
++ * var results = sprite.packOne(12, 16);
++ */
++ShelfPack.prototype.packOne = function(w, h) {
++    var y = 0,
++        best = { shelf: -1, waste: Infinity },
++        shelf, waste;
++
++    // find the best shelf
++    for (var i = 0; i < this.shelves.length; i++) {
++        shelf = this.shelves[i];
++        y += shelf.h;
++
++        // exactly the right height with width to spare, pack it..
++        if (h === shelf.h && w <= shelf.free) {
++            this.count(h);
++            return shelf.alloc(w, h);
++        }
++        // not enough height or width, skip it..
++        if (h > shelf.h || w > shelf.free) {
++            continue;
++        }
++        // maybe enough height or width, minimize waste..
++        if (h < shelf.h && w <= shelf.free) {
++            waste = shelf.h - h;
++            if (waste < best.waste) {
++                best.waste = waste;
++                best.shelf = i;
++            }
++        }
++    }
+ 
+-    readSFixed64: function() {
+-        var val = this.buf.readUInt32LE(this.pos) + this.buf.readInt32LE(this.pos + 4) * SHIFT_LEFT_32;
+-        this.pos += 8;
+-        return val;
+-    },
++    if (best.shelf !== -1) {
++        shelf = this.shelves[best.shelf];
++        this.count(h);
++        return shelf.alloc(w, h);
++    }
+ 
+-    readFloat: function() {
+-        var val = this.buf.readFloatLE(this.pos);
+-        this.pos += 4;
+-        return val;
+-    },
++    // add shelf..
++    if (h <= (this.h - y) && w <= this.w) {
++        shelf = new Shelf(y, this.w, h);
++        this.shelves.push(shelf);
++        this.count(h);
++        return shelf.alloc(w, h);
++    }
+ 
+-    readDouble: function() {
+-        var val = this.buf.readDoubleLE(this.pos);
+-        this.pos += 8;
+-        return val;
+-    },
++    // no more space..
++    // If `autoResize` option is set, grow the sprite as follows:
++    //  * double whichever sprite dimension is smaller (`w1` or `h1`)
++    //  * if sprite dimensions are equal, grow width before height
++    //  * accomodate very large bin requests (big `w` or `h`)
++    if (this.autoResize) {
++        var h1, h2, w1, w2;
+ 
+-    readVarint: function() {
+-        var buf = this.buf,
+-            val, b;
++        h1 = h2 = this.h;
++        w1 = w2 = this.w;
+ 
+-        b = buf[this.pos++]; val  =  b & 0x7f;        if (b < 0x80) return val;
+-        b = buf[this.pos++]; val |= (b & 0x7f) << 7;  if (b < 0x80) return val;
+-        b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;
+-        b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;
++        if (w1 <= h1 || w > w1) {   // grow width..
++            w2 = Math.max(w, w1) * 2;
++        }
++        if (h1 < w1 || h > h1) {    // grow height..
++            h2 = Math.max(h, h1) * 2;
++        }
+ 
+-        return readVarintRemainder(val, this);
+-    },
++        this.resize(w2, h2);
++        return this.packOne(w, h);  // retry
++    }
+ 
+-    readVarint64: function() {
+-        var startPos = this.pos,
+-            val = this.readVarint();
++    return null;
++};
+ 
+-        if (val < POW_2_63) return val;
++/**
++ * Clear the sprite.
++ *
++ * @example
++ * sprite.clear();
++ */
++ShelfPack.prototype.clear = function() {
++    this.shelves = [];
++    this.stats = {};
++};
+ 
+-        var pos = this.pos - 2;
+-        while (this.buf[pos] === 0xff) pos--;
+-        if (pos < startPos) pos = startPos;
++/**
++ * Resize the sprite.
++ *
++ * @param   {number}  w  Requested new sprite width
++ * @param   {number}  h  Requested new sprite height
++ * @returns {boolean} `true` if resize succeeded, `false` if failed
++ * @example
++ * sprite.resize(256, 256);
++ */
++ShelfPack.prototype.resize = function(w, h) {
++    this.w = w;
++    this.h = h;
++    for (var i = 0; i < this.shelves.length; i++) {
++        this.shelves[i].resize(w);
++    }
++    return true;
++};
+ 
+-        val = 0;
+-        for (var i = 0; i < pos - startPos + 1; i++) {
+-            var b = ~this.buf[startPos + i] & 0x7f;
+-            val += i < 4 ? b << i * 7 : b * Math.pow(2, i * 7);
+-        }
+ 
+-        return -val - 1;
+-    },
+ 
+-    readSVarint: function() {
+-        var num = this.readVarint();
+-        return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding
+-    },
++/**
++ * Create a new Shelf.
++ *
++ * @private
++ * @class  Shelf
++ * @param  {number}  y   Top coordinate of the new shelf
++ * @param  {number}  w   Width of the new shelf
++ * @param  {number}  h   Height of the new shelf
++ * @example
++ * var shelf = new Shelf(64, 512, 24);
++ */
++function Shelf(y, w, h) {
++    this.x = 0;
++    this.y = y;
++    this.w = this.free = w;
++    this.h = h;
++}
+ 
+-    readBoolean: function() {
+-        return Boolean(this.readVarint());
+-    },
++/**
++ * Allocate a single bin into the shelf.
++ *
++ * @private
++ * @param   {number}  w   Width of the bin to allocate
++ * @param   {number}  h   Height of the bin to allocate
++ * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
++ * @example
++ * shelf.alloc(12, 16);
++ */
++Shelf.prototype.alloc = function(w, h) {
++    if (w > this.free || h > this.h) {
++        return null;
++    }
++    var x = this.x;
++    this.x += w;
++    this.free -= w;
++    return { x: x, y: this.y, w: w, h: h, width: w, height: h };
++};
+ 
+-    readString: function() {
+-        var end = this.readVarint() + this.pos,
+-            str = this.buf.toString('utf8', this.pos, end);
+-        this.pos = end;
+-        return str;
+-    },
++/**
++ * Resize the shelf.
++ *
++ * @private
++ * @param   {number}  w  Requested new width of the shelf
++ * @returns {boolean} true if resize succeeded, false if failed
++ * @example
++ * shelf.resize(512);
++ */
++Shelf.prototype.resize = function(w) {
++    this.free += (w - this.w);
++    this.w = w;
++    return true;
++};
+ 
+-    readBytes: function() {
+-        var end = this.readVarint() + this.pos,
+-            buffer = this.buf.slice(this.pos, end);
+-        this.pos = end;
+-        return buffer;
+-    },
++return ShelfPack;
+ 
+-    // verbose for performance reasons; doesn't affect gzipped size
++}));
++},{}],178:[function(require,module,exports){
++'use strict';
+ 
+-    readPackedVarint: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readVarint());
+-        return arr;
+-    },
+-    readPackedSVarint: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readSVarint());
+-        return arr;
+-    },
+-    readPackedBoolean: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readBoolean());
+-        return arr;
+-    },
+-    readPackedFloat: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readFloat());
+-        return arr;
+-    },
+-    readPackedDouble: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readDouble());
+-        return arr;
+-    },
+-    readPackedFixed32: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readFixed32());
+-        return arr;
+-    },
+-    readPackedSFixed32: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readSFixed32());
+-        return arr;
+-    },
+-    readPackedFixed64: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readFixed64());
+-        return arr;
+-    },
+-    readPackedSFixed64: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readSFixed64());
+-        return arr;
+-    },
++var kdbush = require('kdbush');
+ 
+-    skip: function(val) {
+-        var type = val & 0x7;
+-        if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}
+-        else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;
+-        else if (type === Pbf.Fixed32) this.pos += 4;
+-        else if (type === Pbf.Fixed64) this.pos += 8;
+-        else throw new Error('Unimplemented type: ' + type);
+-    },
++module.exports = supercluster;
+ 
+-    // === WRITING =================================================================
++function supercluster(options) {
++    return new SuperCluster(options);
++}
+ 
+-    writeTag: function(tag, type) {
+-        this.writeVarint((tag << 3) | type);
+-    },
++function SuperCluster(options) {
++    this.options = extend(Object.create(this.options), options);
++    this.trees = new Array(this.options.maxZoom + 1);
++}
+ 
+-    realloc: function(min) {
+-        var length = this.length || 16;
++SuperCluster.prototype = {
++    options: {
++        minZoom: 0,   // min zoom to generate clusters on
++        maxZoom: 16,  // max zoom level to cluster the points on
++        radius: 40,   // cluster radius in pixels
++        extent: 512,  // tile extent (radius is calculated relative to it)
++        nodeSize: 64, // size of the KD-tree leaf node, affects performance
++        log: false    // whether to log timing info
++    },
+ 
+-        while (length < this.pos + min) length *= 2;
++    load: function (points) {
++        var log = this.options.log;
+ 
+-        if (length !== this.length) {
+-            var buf = new Buffer(length);
+-            this.buf.copy(buf);
+-            this.buf = buf;
+-            this.length = length;
+-        }
+-    },
++        if (log) console.time('total time');
+ 
+-    finish: function() {
+-        this.length = this.pos;
+-        this.pos = 0;
+-        return this.buf.slice(0, this.length);
+-    },
++        var timerId = 'prepare ' + points.length + ' points';
++        if (log) console.time(timerId);
+ 
+-    writeFixed32: function(val) {
+-        this.realloc(4);
+-        this.buf.writeUInt32LE(val, this.pos);
+-        this.pos += 4;
+-    },
++        this.points = points;
+ 
+-    writeSFixed32: function(val) {
+-        this.realloc(4);
+-        this.buf.writeInt32LE(val, this.pos);
+-        this.pos += 4;
+-    },
++        // generate a cluster object for each point
++        var clusters = points.map(createPointCluster);
++        if (log) console.timeEnd(timerId);
+ 
+-    writeFixed64: function(val) {
+-        this.realloc(8);
+-        this.buf.writeInt32LE(val & -1, this.pos);
+-        this.buf.writeUInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
+-        this.pos += 8;
+-    },
++        // cluster points on max zoom, then cluster the results on previous zoom, etc.;
++        // results in a cluster hierarchy across zoom levels
++        for (var z = this.options.maxZoom; z >= this.options.minZoom; z--) {
++            var now = +Date.now();
+ 
+-    writeSFixed64: function(val) {
+-        this.realloc(8);
+-        this.buf.writeInt32LE(val & -1, this.pos);
+-        this.buf.writeInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
+-        this.pos += 8;
+-    },
++            // index input points into a KD-tree
++            this.trees[z + 1] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
+ 
+-    writeVarint: function(val) {
+-        val = +val;
++            clusters = this._cluster(clusters, z); // create a new set of clusters for the zoom
+ 
+-        if (val > 0xfffffff) {
+-            writeBigVarint(val, this);
+-            return;
++            if (log) console.log('z%d: %d clusters in %dms', z, clusters.length, +Date.now() - now);
+         }
+ 
+-        this.realloc(4);
++        // index top-level clusters
++        this.trees[this.options.minZoom] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
+ 
+-        this.buf[this.pos++] =           val & 0x7f  | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+-        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+-        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+-        this.buf[this.pos++] =   (val >>> 7) & 0x7f;
+-    },
++        if (log) console.timeEnd('total time');
+ 
+-    writeSVarint: function(val) {
+-        this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);
++        return this;
+     },
+ 
+-    writeBoolean: function(val) {
+-        this.writeVarint(Boolean(val));
++    getClusters: function (bbox, zoom) {
++        var tree = this.trees[this._limitZoom(zoom)];
++        var ids = tree.range(lngX(bbox[0]), latY(bbox[3]), lngX(bbox[2]), latY(bbox[1]));
++        var clusters = [];
++        for (var i = 0; i < ids.length; i++) {
++            var c = tree.points[ids[i]];
++            clusters.push(c.id !== -1 ? this.points[c.id] : getClusterJSON(c));
++        }
++        return clusters;
+     },
+ 
+-    writeString: function(str) {
+-        str = String(str);
+-        var bytes = Buffer.byteLength(str);
+-        this.writeVarint(bytes);
+-        this.realloc(bytes);
+-        this.buf.write(str, this.pos);
+-        this.pos += bytes;
+-    },
++    getTile: function (z, x, y) {
++        var z2 = Math.pow(2, z);
++        var extent = this.options.extent;
++        var p = this.options.radius / extent;
++        var tree = this.trees[this._limitZoom(z)];
++        var ids = tree.range(
++            (x - p) / z2,
++            (y - p) / z2,
++            (x + 1 + p) / z2,
++            (y + 1 + p) / z2);
+ 
+-    writeFloat: function(val) {
+-        this.realloc(4);
+-        this.buf.writeFloatLE(val, this.pos);
+-        this.pos += 4;
+-    },
++        if (!ids.length) return null;
+ 
+-    writeDouble: function(val) {
+-        this.realloc(8);
+-        this.buf.writeDoubleLE(val, this.pos);
+-        this.pos += 8;
++        var tile = {
++            features: []
++        };
++        for (var i = 0; i < ids.length; i++) {
++            var c = tree.points[ids[i]];
++            var feature = {
++                type: 1,
++                geometry: [[
++                    Math.round(extent * (c.x * z2 - x)),
++                    Math.round(extent * (c.y * z2 - y))
++                ]],
++                tags: c.id !== -1 ? this.points[c.id].properties : getClusterProperties(c)
++            };
++            tile.features.push(feature);
++        }
++        return tile;
+     },
+ 
+-    writeBytes: function(buffer) {
+-        var len = buffer.length;
+-        this.writeVarint(len);
+-        this.realloc(len);
+-        for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];
++    _limitZoom: function (z) {
++        return Math.max(this.options.minZoom, Math.min(z, this.options.maxZoom + 1));
+     },
+ 
+-    writeRawMessage: function(fn, obj) {
+-        this.pos++; // reserve 1 byte for short message length
++    _cluster: function (points, zoom) {
++        var clusters = [];
++        var r = this.options.radius / (this.options.extent * Math.pow(2, zoom));
+ 
+-        // write the message directly to the buffer and see how much was written
+-        var startPos = this.pos;
+-        fn(obj, this);
+-        var len = this.pos - startPos;
++        // loop through each point
++        for (var i = 0; i < points.length; i++) {
++            var p = points[i];
++            // if we've already visited the point at this zoom level, skip it
++            if (p.zoom <= zoom) continue;
++            p.zoom = zoom;
+ 
+-        if (len >= 0x80) reallocForRawMessage(startPos, len, this);
++            // find all nearby points
++            var tree = this.trees[zoom + 1];
++            var neighborIds = tree.within(p.x, p.y, r);
+ 
+-        // finally, write the message length in the reserved place and restore the position
+-        this.pos = startPos - 1;
+-        this.writeVarint(len);
+-        this.pos += len;
+-    },
++            var foundNeighbors = false;
++            var numPoints = p.numPoints;
++            var wx = p.x * numPoints;
++            var wy = p.y * numPoints;
+ 
+-    writeMessage: function(tag, fn, obj) {
+-        this.writeTag(tag, Pbf.Bytes);
+-        this.writeRawMessage(fn, obj);
+-    },
++            for (var j = 0; j < neighborIds.length; j++) {
++                var b = tree.points[neighborIds[j]];
++                // filter out neighbors that are too far or already processed
++                if (zoom < b.zoom) {
++                    foundNeighbors = true;
++                    b.zoom = zoom; // save the zoom (so it doesn't get processed twice)
++                    wx += b.x * b.numPoints; // accumulate coordinates for calculating weighted center
++                    wy += b.y * b.numPoints;
++                    numPoints += b.numPoints;
++                }
++            }
+ 
+-    writePackedVarint:   function(tag, arr) { this.writeMessage(tag, writePackedVarint, arr);   },
+-    writePackedSVarint:  function(tag, arr) { this.writeMessage(tag, writePackedSVarint, arr);  },
+-    writePackedBoolean:  function(tag, arr) { this.writeMessage(tag, writePackedBoolean, arr);  },
+-    writePackedFloat:    function(tag, arr) { this.writeMessage(tag, writePackedFloat, arr);    },
+-    writePackedDouble:   function(tag, arr) { this.writeMessage(tag, writePackedDouble, arr);   },
+-    writePackedFixed32:  function(tag, arr) { this.writeMessage(tag, writePackedFixed32, arr);  },
+-    writePackedSFixed32: function(tag, arr) { this.writeMessage(tag, writePackedSFixed32, arr); },
+-    writePackedFixed64:  function(tag, arr) { this.writeMessage(tag, writePackedFixed64, arr);  },
+-    writePackedSFixed64: function(tag, arr) { this.writeMessage(tag, writePackedSFixed64, arr); },
++            clusters.push(foundNeighbors ? createCluster(wx / numPoints, wy / numPoints, numPoints, -1) : p);
++        }
+ 
+-    writeBytesField: function(tag, buffer) {
+-        this.writeTag(tag, Pbf.Bytes);
+-        this.writeBytes(buffer);
+-    },
+-    writeFixed32Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed32);
+-        this.writeFixed32(val);
+-    },
+-    writeSFixed32Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed32);
+-        this.writeSFixed32(val);
+-    },
+-    writeFixed64Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed64);
+-        this.writeFixed64(val);
+-    },
+-    writeSFixed64Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed64);
+-        this.writeSFixed64(val);
+-    },
+-    writeVarintField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Varint);
+-        this.writeVarint(val);
+-    },
+-    writeSVarintField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Varint);
+-        this.writeSVarint(val);
+-    },
+-    writeStringField: function(tag, str) {
+-        this.writeTag(tag, Pbf.Bytes);
+-        this.writeString(str);
+-    },
+-    writeFloatField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed32);
+-        this.writeFloat(val);
+-    },
+-    writeDoubleField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed64);
+-        this.writeDouble(val);
+-    },
+-    writeBooleanField: function(tag, val) {
+-        this.writeVarintField(tag, Boolean(val));
++        return clusters;
+     }
+ };
+ 
+-function readVarintRemainder(val, pbf) {
+-    var buf = pbf.buf, b;
+-
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x10000000;         if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x800000000;        if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x40000000000;      if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x2000000000000;    if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x100000000000000;  if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x8000000000000000; if (b < 0x80) return val;
+-
+-    throw new Error('Expected varint not more than 10 bytes');
++function createCluster(x, y, numPoints, id) {
++    return {
++        x: x, // weighted cluster center
++        y: y,
++        zoom: Infinity, // the last zoom the cluster was processed at
++        id: id, // index of the source feature in the original input array
++        numPoints: numPoints
++    };
+ }
+ 
+-function writeBigVarint(val, pbf) {
+-    pbf.realloc(10);
+-
+-    var maxPos = pbf.pos + 10;
++function createPointCluster(p, i) {
++    var coords = p.geometry.coordinates;
++    return createCluster(lngX(coords[0]), latY(coords[1]), 1, i);
++}
+ 
+-    while (val >= 1) {
+-        if (pbf.pos >= maxPos) throw new Error('Given varint doesn\'t fit into 10 bytes');
+-        var b = val & 0xff;
+-        pbf.buf[pbf.pos++] = b | (val >= 0x80 ? 0x80 : 0);
+-        val /= 0x80;
+-    }
++function getClusterJSON(cluster) {
++    return {
++        type: 'Feature',
++        properties: getClusterProperties(cluster),
++        geometry: {
++            type: 'Point',
++            coordinates: [xLng(cluster.x), yLat(cluster.y)]
++        }
++    };
+ }
+ 
+-function reallocForRawMessage(startPos, len, pbf) {
+-    var extraLen =
+-        len <= 0x3fff ? 1 :
+-        len <= 0x1fffff ? 2 :
+-        len <= 0xfffffff ? 3 : Math.ceil(Math.log(len) / (Math.LN2 * 7));
++function getClusterProperties(cluster) {
++    var count = cluster.numPoints;
++    var abbrev = count >= 10000 ? Math.round(count / 1000) + 'k' :
++                 count >= 1000 ? (Math.round(count / 100) / 10) + 'k' : count;
++    return {
++        cluster: true,
++        point_count: count,
++        point_count_abbreviated: abbrev
++    };
++}
+ 
+-    // if 1 byte isn't enough for encoding message length, shift the data to the right
+-    pbf.realloc(extraLen);
+-    for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];
++// longitude/latitude to spherical mercator in [0..1] range
++function lngX(lng) {
++    return lng / 360 + 0.5;
++}
++function latY(lat) {
++    var sin = Math.sin(lat * Math.PI / 180),
++        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
++    return y < 0 ? 0 :
++           y > 1 ? 1 : y;
+ }
+ 
+-function writePackedVarint(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]);   }
+-function writePackedSVarint(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]);  }
+-function writePackedFloat(arr, pbf)    { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]);    }
+-function writePackedDouble(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]);   }
+-function writePackedBoolean(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]);  }
+-function writePackedFixed32(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]);  }
+-function writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }
+-function writePackedFixed64(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]);  }
+-function writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }
++// spherical mercator to longitude/latitude
++function xLng(x) {
++    return (x - 0.5) * 360;
++}
++function yLat(y) {
++    var y2 = (180 - y * 360) * Math.PI / 180;
++    return 360 * Math.atan(Math.exp(y2)) / Math.PI - 90;
++}
+ 
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"./buffer":171}],173:[function(require,module,exports){
+-exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+-  var e, m
+-  var eLen = nBytes * 8 - mLen - 1
+-  var eMax = (1 << eLen) - 1
+-  var eBias = eMax >> 1
+-  var nBits = -7
+-  var i = isLE ? (nBytes - 1) : 0
+-  var d = isLE ? -1 : 1
+-  var s = buffer[offset + i]
++function extend(dest, src) {
++    for (var id in src) dest[id] = src[id];
++    return dest;
++}
+ 
+-  i += d
++function getX(p) {
++    return p.x;
++}
++function getY(p) {
++    return p.y;
++}
+ 
+-  e = s & ((1 << (-nBits)) - 1)
+-  s >>= (-nBits)
+-  nBits += eLen
+-  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
++},{"kdbush":36}],179:[function(require,module,exports){
++// TinyColor v1.4.1
++// https://github.com/bgrins/TinyColor
++// Brian Grinstead, MIT License
+ 
+-  m = e & ((1 << (-nBits)) - 1)
+-  e >>= (-nBits)
+-  nBits += mLen
+-  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
++(function(Math) {
+ 
+-  if (e === 0) {
+-    e = 1 - eBias
+-  } else if (e === eMax) {
+-    return m ? NaN : ((s ? -1 : 1) * Infinity)
+-  } else {
+-    m = m + Math.pow(2, mLen)
+-    e = e - eBias
+-  }
+-  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+-}
++var trimLeft = /^\s+/,
++    trimRight = /\s+$/,
++    tinyCounter = 0,
++    mathRound = Math.round,
++    mathMin = Math.min,
++    mathMax = Math.max,
++    mathRandom = Math.random;
+ 
+-exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+-  var e, m, c
+-  var eLen = nBytes * 8 - mLen - 1
+-  var eMax = (1 << eLen) - 1
+-  var eBias = eMax >> 1
+-  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+-  var i = isLE ? 0 : (nBytes - 1)
+-  var d = isLE ? 1 : -1
+-  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
++function tinycolor (color, opts) {
+ 
+-  value = Math.abs(value)
++    color = (color) ? color : '';
++    opts = opts || { };
+ 
+-  if (isNaN(value) || value === Infinity) {
+-    m = isNaN(value) ? 1 : 0
+-    e = eMax
+-  } else {
+-    e = Math.floor(Math.log(value) / Math.LN2)
+-    if (value * (c = Math.pow(2, -e)) < 1) {
+-      e--
+-      c *= 2
+-    }
+-    if (e + eBias >= 1) {
+-      value += rt / c
+-    } else {
+-      value += rt * Math.pow(2, 1 - eBias)
+-    }
+-    if (value * c >= 2) {
+-      e++
+-      c /= 2
++    // If input is already a tinycolor, return itself
++    if (color instanceof tinycolor) {
++       return color;
+     }
+-
+-    if (e + eBias >= eMax) {
+-      m = 0
+-      e = eMax
+-    } else if (e + eBias >= 1) {
+-      m = (value * c - 1) * Math.pow(2, mLen)
+-      e = e + eBias
+-    } else {
+-      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+-      e = 0
++    // If we are called as a function, call using new instead
++    if (!(this instanceof tinycolor)) {
++        return new tinycolor(color, opts);
+     }
+-  }
+-
+-  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+-
+-  e = (e << mLen) | m
+-  eLen += mLen
+-  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+ 
+-  buffer[offset + i - d] |= s * 128
+-}
+-
+-},{}],174:[function(require,module,exports){
+-'use strict';
++    var rgb = inputToRGB(color);
++    this._originalInput = color,
++    this._r = rgb.r,
++    this._g = rgb.g,
++    this._b = rgb.b,
++    this._a = rgb.a,
++    this._roundA = mathRound(100*this._a) / 100,
++    this._format = opts.format || rgb.format;
++    this._gradientType = opts.gradientType;
+ 
+-module.exports = Point;
++    // Don't let the range of [0,255] come back in [0,1].
++    // Potentially lose a little bit of precision here, but will fix issues where
++    // .5 gets interpreted as half of the total, instead of half of 1
++    // If it was supposed to be 128, this was already taken care of by `inputToRgb`
++    if (this._r < 1) { this._r = mathRound(this._r); }
++    if (this._g < 1) { this._g = mathRound(this._g); }
++    if (this._b < 1) { this._b = mathRound(this._b); }
+ 
+-function Point(x, y) {
+-    this.x = x;
+-    this.y = y;
++    this._ok = rgb.ok;
++    this._tc_id = tinyCounter++;
+ }
+ 
+-Point.prototype = {
+-    clone: function() { return new Point(this.x, this.y); },
+-
+-    add:     function(p) { return this.clone()._add(p);     },
+-    sub:     function(p) { return this.clone()._sub(p);     },
+-    mult:    function(k) { return this.clone()._mult(k);    },
+-    div:     function(k) { return this.clone()._div(k);     },
+-    rotate:  function(a) { return this.clone()._rotate(a);  },
+-    matMult: function(m) { return this.clone()._matMult(m); },
+-    unit:    function() { return this.clone()._unit(); },
+-    perp:    function() { return this.clone()._perp(); },
+-    round:   function() { return this.clone()._round(); },
+-
+-    mag: function() {
+-        return Math.sqrt(this.x * this.x + this.y * this.y);
++tinycolor.prototype = {
++    isDark: function() {
++        return this.getBrightness() < 128;
+     },
+-
+-    equals: function(p) {
+-        return this.x === p.x &&
+-               this.y === p.y;
++    isLight: function() {
++        return !this.isDark();
+     },
+-
+-    dist: function(p) {
+-        return Math.sqrt(this.distSqr(p));
++    isValid: function() {
++        return this._ok;
+     },
+-
+-    distSqr: function(p) {
+-        var dx = p.x - this.x,
+-            dy = p.y - this.y;
+-        return dx * dx + dy * dy;
++    getOriginalInput: function() {
++      return this._originalInput;
+     },
+-
+-    angle: function() {
+-        return Math.atan2(this.y, this.x);
++    getFormat: function() {
++        return this._format;
+     },
+-
+-    angleTo: function(b) {
+-        return Math.atan2(this.y - b.y, this.x - b.x);
++    getAlpha: function() {
++        return this._a;
+     },
+-
+-    angleWith: function(b) {
+-        return this.angleWithSep(b.x, b.y);
++    getBrightness: function() {
++        //http://www.w3.org/TR/AERT#color-contrast
++        var rgb = this.toRgb();
++        return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
+     },
++    getLuminance: function() {
++        //http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
++        var rgb = this.toRgb();
++        var RsRGB, GsRGB, BsRGB, R, G, B;
++        RsRGB = rgb.r/255;
++        GsRGB = rgb.g/255;
++        BsRGB = rgb.b/255;
+ 
+-    // Find the angle of the two vectors, solving the formula for the cross product a x b = |a||b|sin(θ) for θ.
+-    angleWithSep: function(x, y) {
+-        return Math.atan2(
+-            this.x * y - this.y * x,
+-            this.x * x + this.y * y);
++        if (RsRGB <= 0.03928) {R = RsRGB / 12.92;} else {R = Math.pow(((RsRGB + 0.055) / 1.055), 2.4);}
++        if (GsRGB <= 0.03928) {G = GsRGB / 12.92;} else {G = Math.pow(((GsRGB + 0.055) / 1.055), 2.4);}
++        if (BsRGB <= 0.03928) {B = BsRGB / 12.92;} else {B = Math.pow(((BsRGB + 0.055) / 1.055), 2.4);}
++        return (0.2126 * R) + (0.7152 * G) + (0.0722 * B);
+     },
+-
+-    _matMult: function(m) {
+-        var x = m[0] * this.x + m[1] * this.y,
+-            y = m[2] * this.x + m[3] * this.y;
+-        this.x = x;
+-        this.y = y;
++    setAlpha: function(value) {
++        this._a = boundAlpha(value);
++        this._roundA = mathRound(100*this._a) / 100;
+         return this;
+     },
+-
+-    _add: function(p) {
+-        this.x += p.x;
+-        this.y += p.y;
+-        return this;
++    toHsv: function() {
++        var hsv = rgbToHsv(this._r, this._g, this._b);
++        return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: this._a };
+     },
+-
+-    _sub: function(p) {
+-        this.x -= p.x;
+-        this.y -= p.y;
+-        return this;
++    toHsvString: function() {
++        var hsv = rgbToHsv(this._r, this._g, this._b);
++        var h = mathRound(hsv.h * 360), s = mathRound(hsv.s * 100), v = mathRound(hsv.v * 100);
++        return (this._a == 1) ?
++          "hsv("  + h + ", " + s + "%, " + v + "%)" :
++          "hsva(" + h + ", " + s + "%, " + v + "%, "+ this._roundA + ")";
+     },
+-
+-    _mult: function(k) {
+-        this.x *= k;
+-        this.y *= k;
+-        return this;
++    toHsl: function() {
++        var hsl = rgbToHsl(this._r, this._g, this._b);
++        return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: this._a };
+     },
+-
+-    _div: function(k) {
+-        this.x /= k;
+-        this.y /= k;
+-        return this;
++    toHslString: function() {
++        var hsl = rgbToHsl(this._r, this._g, this._b);
++        var h = mathRound(hsl.h * 360), s = mathRound(hsl.s * 100), l = mathRound(hsl.l * 100);
++        return (this._a == 1) ?
++          "hsl("  + h + ", " + s + "%, " + l + "%)" :
++          "hsla(" + h + ", " + s + "%, " + l + "%, "+ this._roundA + ")";
+     },
+-
+-    _unit: function() {
+-        this._div(this.mag());
+-        return this;
++    toHex: function(allow3Char) {
++        return rgbToHex(this._r, this._g, this._b, allow3Char);
+     },
+-
+-    _perp: function() {
+-        var y = this.y;
+-        this.y = this.x;
+-        this.x = -y;
+-        return this;
++    toHexString: function(allow3Char) {
++        return '#' + this.toHex(allow3Char);
+     },
+-
+-    _rotate: function(angle) {
+-        var cos = Math.cos(angle),
+-            sin = Math.sin(angle),
+-            x = cos * this.x - sin * this.y,
+-            y = sin * this.x + cos * this.y;
+-        this.x = x;
+-        this.y = y;
+-        return this;
++    toHex8: function(allow4Char) {
++        return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
++    },
++    toHex8String: function(allow4Char) {
++        return '#' + this.toHex8(allow4Char);
++    },
++    toRgb: function() {
++        return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
++    },
++    toRgbString: function() {
++        return (this._a == 1) ?
++          "rgb("  + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ")" :
++          "rgba(" + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ", " + this._roundA + ")";
++    },
++    toPercentageRgb: function() {
++        return { r: mathRound(bound01(this._r, 255) * 100) + "%", g: mathRound(bound01(this._g, 255) * 100) + "%", b: mathRound(bound01(this._b, 255) * 100) + "%", a: this._a };
++    },
++    toPercentageRgbString: function() {
++        return (this._a == 1) ?
++          "rgb("  + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%)" :
++          "rgba(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%, " + this._roundA + ")";
+     },
++    toName: function() {
++        if (this._a === 0) {
++            return "transparent";
++        }
+ 
+-    _round: function() {
+-        this.x = Math.round(this.x);
+-        this.y = Math.round(this.y);
+-        return this;
+-    }
+-};
++        if (this._a < 1) {
++            return false;
++        }
+ 
+-// constructs Point from an array if necessary
+-Point.convert = function (a) {
+-    if (a instanceof Point) {
+-        return a;
+-    }
+-    if (Array.isArray(a)) {
+-        return new Point(a[0], a[1]);
+-    }
+-    return a;
+-};
++        return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
++    },
++    toFilter: function(secondColor) {
++        var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
++        var secondHex8String = hex8String;
++        var gradientType = this._gradientType ? "GradientType = 1, " : "";
+ 
+-},{}],175:[function(require,module,exports){
+-// Copyright 2014 Simon Lydell
+-// X11 (“MIT”) Licensed. (See LICENSE.)
+-
+-void (function(root, factory) {
+-  if (typeof define === "function" && define.amd) {
+-    define(factory)
+-  } else if (typeof exports === "object") {
+-    module.exports = factory()
+-  } else {
+-    root.resolveUrl = factory()
+-  }
+-}(this, function() {
+-
+-  function resolveUrl(/* ...urls */) {
+-    var numUrls = arguments.length
+-
+-    if (numUrls === 0) {
+-      throw new Error("resolveUrl requires at least one argument; got none.")
+-    }
+-
+-    var base = document.createElement("base")
+-    base.href = arguments[0]
+-
+-    if (numUrls === 1) {
+-      return base.href
+-    }
+-
+-    var head = document.getElementsByTagName("head")[0]
+-    head.insertBefore(base, head.firstChild)
+-
+-    var a = document.createElement("a")
+-    var resolved
+-
+-    for (var index = 1; index < numUrls; index++) {
+-      a.href = arguments[index]
+-      resolved = a.href
+-      base.href = resolved
+-    }
+-
+-    head.removeChild(base)
+-
+-    return resolved
+-  }
+-
+-  return resolveUrl
+-
+-}));
++        if (secondColor) {
++            var s = tinycolor(secondColor);
++            secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
++        }
+ 
+-},{}],176:[function(require,module,exports){
+-'use strict';
++        return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
++    },
++    toString: function(format) {
++        var formatSet = !!format;
++        format = format || this._format;
+ 
+-module.exports = ShelfPack;
++        var formattedString = false;
++        var hasAlpha = this._a < 1 && this._a >= 0;
++        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");
+ 
++        if (needsAlphaFormat) {
++            // Special case for "transparent", all other non-alpha formats
++            // will return rgba when there is transparency.
++            if (format === "name" && this._a === 0) {
++                return this.toName();
++            }
++            return this.toRgbString();
++        }
++        if (format === "rgb") {
++            formattedString = this.toRgbString();
++        }
++        if (format === "prgb") {
++            formattedString = this.toPercentageRgbString();
++        }
++        if (format === "hex" || format === "hex6") {
++            formattedString = this.toHexString();
++        }
++        if (format === "hex3") {
++            formattedString = this.toHexString(true);
++        }
++        if (format === "hex4") {
++            formattedString = this.toHex8String(true);
++        }
++        if (format === "hex8") {
++            formattedString = this.toHex8String();
++        }
++        if (format === "name") {
++            formattedString = this.toName();
++        }
++        if (format === "hsl") {
++            formattedString = this.toHslString();
++        }
++        if (format === "hsv") {
++            formattedString = this.toHsvString();
++        }
+ 
+-/**
+- * Create a new ShelfPack bin allocator.
+- *
+- * Uses the Shelf Best Height Fit algorithm from
+- * http://clb.demon.fi/files/RectangleBinPack.pdf
+- *
+- * @class  ShelfPack
+- * @param  {number}  [w=64]  Initial width of the sprite
+- * @param  {number}  [h=64]  Initial width of the sprite
+- * @param  {Object}  [options]
+- * @param  {boolean} [options.autoResize=false]  If `true`, the sprite will automatically grow
+- * @example
+- * var sprite = new ShelfPack(64, 64, { autoResize: false });
+- */
+-function ShelfPack(w, h, options) {
+-    options = options || {};
+-    this.w = w || 64;
+-    this.h = h || 64;
+-    this.autoResize = !!options.autoResize;
+-    this.shelves = [];
+-    this.stats = {};
+-    this.count = function(h) {
+-        this.stats[h] = (this.stats[h] | 0) + 1;
+-    };
+-}
++        return formattedString || this.toHexString();
++    },
++    clone: function() {
++        return tinycolor(this.toString());
++    },
+ 
+-/**
+- * Batch pack multiple bins into the sprite.
+- *
+- * @param   {Array}   bins Array of requested bins - each object should have `width`, `height` (or `w`, `h`) properties
+- * @param   {Object}  [options]
+- * @param   {boolean} [options.inPlace=false] If `true`, the supplied bin objects will be updated inplace with `x` and `y` properties
+- * @returns {Array}   Array of allocated bins - each bin is an object with `x`, `y`, `w`, `h` properties
+- * @example
+- * var bins = [
+- *     { id: 'a', width: 12, height: 12 },
+- *     { id: 'b', width: 12, height: 16 },
+- *     { id: 'c', width: 12, height: 24 }
+- * ];
+- * var results = sprite.pack(bins, { inPlace: false });
+- */
+-ShelfPack.prototype.pack = function(bins, options) {
+-    bins = [].concat(bins);
+-    options = options || {};
++    _applyModification: function(fn, args) {
++        var color = fn.apply(null, [this].concat([].slice.call(args)));
++        this._r = color._r;
++        this._g = color._g;
++        this._b = color._b;
++        this.setAlpha(color._a);
++        return this;
++    },
++    lighten: function() {
++        return this._applyModification(lighten, arguments);
++    },
++    brighten: function() {
++        return this._applyModification(brighten, arguments);
++    },
++    darken: function() {
++        return this._applyModification(darken, arguments);
++    },
++    desaturate: function() {
++        return this._applyModification(desaturate, arguments);
++    },
++    saturate: function() {
++        return this._applyModification(saturate, arguments);
++    },
++    greyscale: function() {
++        return this._applyModification(greyscale, arguments);
++    },
++    spin: function() {
++        return this._applyModification(spin, arguments);
++    },
+ 
+-    var results = [],
+-        w, h, allocation;
++    _applyCombination: function(fn, args) {
++        return fn.apply(null, [this].concat([].slice.call(args)));
++    },
++    analogous: function() {
++        return this._applyCombination(analogous, arguments);
++    },
++    complement: function() {
++        return this._applyCombination(complement, arguments);
++    },
++    monochromatic: function() {
++        return this._applyCombination(monochromatic, arguments);
++    },
++    splitcomplement: function() {
++        return this._applyCombination(splitcomplement, arguments);
++    },
++    triad: function() {
++        return this._applyCombination(triad, arguments);
++    },
++    tetrad: function() {
++        return this._applyCombination(tetrad, arguments);
++    }
++};
+ 
+-    for (var i = 0; i < bins.length; i++) {
+-        w = bins[i].w || bins[i].width;
+-        h = bins[i].h || bins[i].height;
+-        if (w && h) {
+-            allocation = this.packOne(w, h);
+-            if (!allocation) {
+-                continue;
+-            }
+-            if (options.inPlace) {
+-                bins[i].x = allocation.x;
+-                bins[i].y = allocation.y;
++// If input is an object, force 1 into "1.0" to handle ratios properly
++// String input requires "1.0" as input, so 1 will be treated as 1
++tinycolor.fromRatio = function(color, opts) {
++    if (typeof color == "object") {
++        var newColor = {};
++        for (var i in color) {
++            if (color.hasOwnProperty(i)) {
++                if (i === "a") {
++                    newColor[i] = color[i];
++                }
++                else {
++                    newColor[i] = convertToPercentage(color[i]);
++                }
+             }
+-            results.push(allocation);
+         }
++        color = newColor;
+     }
+ 
+-    return results;
++    return tinycolor(color, opts);
+ };
+ 
+-/**
+- * Pack a single bin into the sprite.
+- *
+- * @param   {number}  w   Width of the bin to allocate
+- * @param   {number}  h   Height of the bin to allocate
+- * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
+- * @example
+- * var results = sprite.packOne(12, 16);
+- */
+-ShelfPack.prototype.packOne = function(w, h) {
+-    var y = 0,
+-        best = { shelf: -1, waste: Infinity },
+-        shelf, waste;
++// Given a string or object, convert that input to RGB
++// Possible string inputs:
++//
++//     "red"
++//     "#f00" or "f00"
++//     "#ff0000" or "ff0000"
++//     "#ff000000" or "ff000000"
++//     "rgb 255 0 0" or "rgb (255, 0, 0)"
++//     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
++//     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
++//     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
++//     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
++//     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
++//     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
++//
++function inputToRGB(color) {
+ 
+-    // find the best shelf
+-    for (var i = 0; i < this.shelves.length; i++) {
+-        shelf = this.shelves[i];
+-        y += shelf.h;
++    var rgb = { r: 0, g: 0, b: 0 };
++    var a = 1;
++    var s = null;
++    var v = null;
++    var l = null;
++    var ok = false;
++    var format = false;
+ 
+-        // exactly the right height with width to spare, pack it..
+-        if (h === shelf.h && w <= shelf.free) {
+-            this.count(h);
+-            return shelf.alloc(w, h);
++    if (typeof color == "string") {
++        color = stringInputToObject(color);
++    }
++
++    if (typeof color == "object") {
++        if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
++            rgb = rgbToRgb(color.r, color.g, color.b);
++            ok = true;
++            format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
+         }
+-        // not enough height or width, skip it..
+-        if (h > shelf.h || w > shelf.free) {
+-            continue;
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
++            s = convertToPercentage(color.s);
++            v = convertToPercentage(color.v);
++            rgb = hsvToRgb(color.h, s, v);
++            ok = true;
++            format = "hsv";
+         }
+-        // maybe enough height or width, minimize waste..
+-        if (h < shelf.h && w <= shelf.free) {
+-            waste = shelf.h - h;
+-            if (waste < best.waste) {
+-                best.waste = waste;
+-                best.shelf = i;
+-            }
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
++            s = convertToPercentage(color.s);
++            l = convertToPercentage(color.l);
++            rgb = hslToRgb(color.h, s, l);
++            ok = true;
++            format = "hsl";
+         }
+-    }
+ 
+-    if (best.shelf !== -1) {
+-        shelf = this.shelves[best.shelf];
+-        this.count(h);
+-        return shelf.alloc(w, h);
++        if (color.hasOwnProperty("a")) {
++            a = color.a;
++        }
+     }
+ 
+-    // add shelf..
+-    if (h <= (this.h - y) && w <= this.w) {
+-        shelf = new Shelf(y, this.w, h);
+-        this.shelves.push(shelf);
+-        this.count(h);
+-        return shelf.alloc(w, h);
+-    }
++    a = boundAlpha(a);
+ 
+-    // no more space..
+-    // If `autoResize` option is set, grow the sprite as follows:
+-    //  * double whichever sprite dimension is smaller (`w1` or `h1`)
+-    //  * if sprite dimensions are equal, grow width before height
+-    //  * accomodate very large bin requests (big `w` or `h`)
+-    if (this.autoResize) {
+-        var h1, h2, w1, w2;
++    return {
++        ok: ok,
++        format: color.format || format,
++        r: mathMin(255, mathMax(rgb.r, 0)),
++        g: mathMin(255, mathMax(rgb.g, 0)),
++        b: mathMin(255, mathMax(rgb.b, 0)),
++        a: a
++    };
++}
+ 
+-        h1 = h2 = this.h;
+-        w1 = w2 = this.w;
+ 
+-        if (w1 <= h1 || w > w1) {   // grow width..
+-            w2 = Math.max(w, w1) * 2;
+-        }
+-        if (h1 < w1 || h > h1) {    // grow height..
+-            h2 = Math.max(h, h1) * 2;
+-        }
++// Conversion Functions
++// --------------------
+ 
+-        this.resize(w2, h2);
+-        return this.packOne(w, h);  // retry
+-    }
++// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
++// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>
+ 
+-    return null;
+-};
++// `rgbToRgb`
++// Handle bounds / percentage checking to conform to CSS color spec
++// <http://www.w3.org/TR/css3-color/>
++// *Assumes:* r, g, b in [0, 255] or [0, 1]
++// *Returns:* { r, g, b } in [0, 255]
++function rgbToRgb(r, g, b){
++    return {
++        r: bound01(r, 255) * 255,
++        g: bound01(g, 255) * 255,
++        b: bound01(b, 255) * 255
++    };
++}
+ 
+-/**
+- * Clear the sprite.
+- *
+- * @example
+- * sprite.clear();
+- */
+-ShelfPack.prototype.clear = function() {
+-    this.shelves = [];
+-    this.stats = {};
+-};
++// `rgbToHsl`
++// Converts an RGB color value to HSL.
++// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
++// *Returns:* { h, s, l } in [0,1]
++function rgbToHsl(r, g, b) {
+ 
+-/**
+- * Resize the sprite.
+- * The resize will fail if the requested dimensions are smaller than the current sprite dimensions.
+- *
+- * @param   {number}  w  Requested new sprite width
+- * @param   {number}  h  Requested new sprite height
+- * @returns {boolean} `true` if resize succeeded, `false` if failed
+- * @example
+- * sprite.resize(256, 256);
+- */
+-ShelfPack.prototype.resize = function(w, h) {
+-    if (w < this.w || h < this.h) {
+-        return false;
++    r = bound01(r, 255);
++    g = bound01(g, 255);
++    b = bound01(b, 255);
++
++    var max = mathMax(r, g, b), min = mathMin(r, g, b);
++    var h, s, l = (max + min) / 2;
++
++    if(max == min) {
++        h = s = 0; // achromatic
+     }
++    else {
++        var d = max - min;
++        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
++        switch(max) {
++            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
++            case g: h = (b - r) / d + 2; break;
++            case b: h = (r - g) / d + 4; break;
++        }
+ 
+-    this.w = w;
+-    this.h = h;
+-    for (var i = 0; i < this.shelves.length; i++) {
+-        this.shelves[i].resize(w);
++        h /= 6;
+     }
+-    return true;
+-};
+ 
++    return { h: h, s: s, l: l };
++}
+ 
++// `hslToRgb`
++// Converts an HSL color value to RGB.
++// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
++// *Returns:* { r, g, b } in the set [0, 255]
++function hslToRgb(h, s, l) {
++    var r, g, b;
+ 
+-/**
+- * Create a new Shelf.
+- *
+- * @private
+- * @class  Shelf
+- * @param  {number}  y   Top coordinate of the new shelf
+- * @param  {number}  w   Width of the new shelf
+- * @param  {number}  h   Height of the new shelf
+- * @example
+- * var shelf = new Shelf(64, 512, 24);
+- */
+-function Shelf(y, w, h) {
+-    this.x = 0;
+-    this.y = y;
+-    this.w = this.free = w;
+-    this.h = h;
+-}
++    h = bound01(h, 360);
++    s = bound01(s, 100);
++    l = bound01(l, 100);
+ 
+-/**
+- * Allocate a single bin into the shelf.
+- *
+- * @private
+- * @param   {number}  w   Width of the bin to allocate
+- * @param   {number}  h   Height of the bin to allocate
+- * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
+- * @example
+- * shelf.alloc(12, 16);
+- */
+-Shelf.prototype.alloc = function(w, h) {
+-    if (w > this.free || h > this.h) {
+-        return null;
++    function hue2rgb(p, q, t) {
++        if(t < 0) t += 1;
++        if(t > 1) t -= 1;
++        if(t < 1/6) return p + (q - p) * 6 * t;
++        if(t < 1/2) return q;
++        if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
++        return p;
+     }
+-    var x = this.x;
+-    this.x += w;
+-    this.free -= w;
+-    return { x: x, y: this.y, w: w, h: h, width: w, height: h };
+-};
+ 
+-/**
+- * Resize the shelf.
+- * The resize will fail if the requested width is smaller than the current shelf width.
+- *
+- * @private
+- * @param   {number}  w  Requested new width of the shelf
+- * @returns {boolean} true if resize succeeded, false if failed
+- * @example
+- * shelf.resize(512);
+- */
+-Shelf.prototype.resize = function(w) {
+-    if (w < this.w) {
+-        return false;
++    if(s === 0) {
++        r = g = b = l; // achromatic
++    }
++    else {
++        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
++        var p = 2 * l - q;
++        r = hue2rgb(p, q, h + 1/3);
++        g = hue2rgb(p, q, h);
++        b = hue2rgb(p, q, h - 1/3);
+     }
+-    this.free += (w - this.w);
+-    this.w = w;
+-    return true;
+-};
+-
+-},{}],177:[function(require,module,exports){
+-'use strict';
+-
+-var kdbush = require('kdbush');
+-
+-module.exports = supercluster;
+-
+-function supercluster(options) {
+-    return new SuperCluster(options);
+-}
+ 
+-function SuperCluster(options) {
+-    this.options = extend(Object.create(this.options), options);
+-    this.trees = new Array(this.options.maxZoom + 1);
++    return { r: r * 255, g: g * 255, b: b * 255 };
+ }
+ 
+-SuperCluster.prototype = {
+-    options: {
+-        minZoom: 0,   // min zoom to generate clusters on
+-        maxZoom: 16,  // max zoom level to cluster the points on
+-        radius: 40,   // cluster radius in pixels
+-        extent: 512,  // tile extent (radius is calculated relative to it)
+-        nodeSize: 64, // size of the KD-tree leaf node, affects performance
+-        log: false    // whether to log timing info
+-    },
+-
+-    load: function (points) {
+-        var log = this.options.log;
+-
+-        if (log) console.time('total time');
+-
+-        var timerId = 'prepare ' + points.length + ' points';
+-        if (log) console.time(timerId);
++// `rgbToHsv`
++// Converts an RGB color value to HSV
++// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
++// *Returns:* { h, s, v } in [0,1]
++function rgbToHsv(r, g, b) {
+ 
+-        this.points = points;
++    r = bound01(r, 255);
++    g = bound01(g, 255);
++    b = bound01(b, 255);
+ 
+-        // generate a cluster object for each point
+-        var clusters = points.map(createPointCluster);
+-        if (log) console.timeEnd(timerId);
++    var max = mathMax(r, g, b), min = mathMin(r, g, b);
++    var h, s, v = max;
+ 
+-        // cluster points on max zoom, then cluster the results on previous zoom, etc.;
+-        // results in a cluster hierarchy across zoom levels
+-        for (var z = this.options.maxZoom; z >= this.options.minZoom; z--) {
+-            var now = +Date.now();
++    var d = max - min;
++    s = max === 0 ? 0 : d / max;
+ 
+-            // index input points into a KD-tree
+-            this.trees[z + 1] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
++    if(max == min) {
++        h = 0; // achromatic
++    }
++    else {
++        switch(max) {
++            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
++            case g: h = (b - r) / d + 2; break;
++            case b: h = (r - g) / d + 4; break;
++        }
++        h /= 6;
++    }
++    return { h: h, s: s, v: v };
++}
+ 
+-            clusters = this._cluster(clusters, z); // create a new set of clusters for the zoom
++// `hsvToRgb`
++// Converts an HSV color value to RGB.
++// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
++// *Returns:* { r, g, b } in the set [0, 255]
++ function hsvToRgb(h, s, v) {
+ 
+-            if (log) console.log('z%d: %d clusters in %dms', z, clusters.length, +Date.now() - now);
+-        }
++    h = bound01(h, 360) * 6;
++    s = bound01(s, 100);
++    v = bound01(v, 100);
+ 
+-        // index top-level clusters
+-        this.trees[this.options.minZoom] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
++    var i = Math.floor(h),
++        f = h - i,
++        p = v * (1 - s),
++        q = v * (1 - f * s),
++        t = v * (1 - (1 - f) * s),
++        mod = i % 6,
++        r = [v, q, p, p, t, v][mod],
++        g = [t, v, v, q, p, p][mod],
++        b = [p, p, t, v, v, q][mod];
+ 
+-        if (log) console.timeEnd('total time');
++    return { r: r * 255, g: g * 255, b: b * 255 };
++}
+ 
+-        return this;
+-    },
++// `rgbToHex`
++// Converts an RGB color to hex
++// Assumes r, g, and b are contained in the set [0, 255]
++// Returns a 3 or 6 character hex
++function rgbToHex(r, g, b, allow3Char) {
+ 
+-    getClusters: function (bbox, zoom) {
+-        var tree = this.trees[this._limitZoom(zoom)];
+-        var ids = tree.range(lngX(bbox[0]), latY(bbox[3]), lngX(bbox[2]), latY(bbox[1]));
+-        var clusters = [];
+-        for (var i = 0; i < ids.length; i++) {
+-            var c = tree.points[ids[i]];
+-            clusters.push(c.id !== -1 ? this.points[c.id] : getClusterJSON(c));
+-        }
+-        return clusters;
+-    },
++    var hex = [
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16))
++    ];
+ 
+-    getTile: function (z, x, y) {
+-        var z2 = Math.pow(2, z);
+-        var extent = this.options.extent;
+-        var p = this.options.radius / extent;
+-        var tree = this.trees[this._limitZoom(z)];
+-        var ids = tree.range(
+-            (x - p) / z2,
+-            (y - p) / z2,
+-            (x + 1 + p) / z2,
+-            (y + 1 + p) / z2);
++    // Return a 3 character hex if possible
++    if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
++        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
++    }
+ 
+-        if (!ids.length) return null;
++    return hex.join("");
++}
+ 
+-        var tile = {
+-            features: []
+-        };
+-        for (var i = 0; i < ids.length; i++) {
+-            var c = tree.points[ids[i]];
+-            var feature = {
+-                type: 1,
+-                geometry: [[
+-                    Math.round(extent * (c.x * z2 - x)),
+-                    Math.round(extent * (c.y * z2 - y))
+-                ]],
+-                tags: c.id !== -1 ? this.points[c.id].properties : getClusterProperties(c)
+-            };
+-            tile.features.push(feature);
+-        }
+-        return tile;
+-    },
++// `rgbaToHex`
++// Converts an RGBA color plus alpha transparency to hex
++// Assumes r, g, b are contained in the set [0, 255] and
++// a in [0, 1]. Returns a 4 or 8 character rgba hex
++function rgbaToHex(r, g, b, a, allow4Char) {
+ 
+-    _limitZoom: function (z) {
+-        return Math.max(this.options.minZoom, Math.min(z, this.options.maxZoom + 1));
+-    },
++    var hex = [
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16)),
++        pad2(convertDecimalToHex(a))
++    ];
+ 
+-    _cluster: function (points, zoom) {
+-        var clusters = [];
+-        var r = this.options.radius / (this.options.extent * Math.pow(2, zoom));
++    // Return a 4 character hex if possible
++    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
++        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
++    }
+ 
+-        // loop through each point
+-        for (var i = 0; i < points.length; i++) {
+-            var p = points[i];
+-            // if we've already visited the point at this zoom level, skip it
+-            if (p.zoom <= zoom) continue;
+-            p.zoom = zoom;
++    return hex.join("");
++}
+ 
+-            // find all nearby points
+-            var tree = this.trees[zoom + 1];
+-            var neighborIds = tree.within(p.x, p.y, r);
++// `rgbaToArgbHex`
++// Converts an RGBA color to an ARGB Hex8 string
++// Rarely used, but required for "toFilter()"
++function rgbaToArgbHex(r, g, b, a) {
+ 
+-            var foundNeighbors = false;
+-            var numPoints = p.numPoints;
+-            var wx = p.x * numPoints;
+-            var wy = p.y * numPoints;
++    var hex = [
++        pad2(convertDecimalToHex(a)),
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16))
++    ];
+ 
+-            for (var j = 0; j < neighborIds.length; j++) {
+-                var b = tree.points[neighborIds[j]];
+-                // filter out neighbors that are too far or already processed
+-                if (zoom < b.zoom) {
+-                    foundNeighbors = true;
+-                    b.zoom = zoom; // save the zoom (so it doesn't get processed twice)
+-                    wx += b.x * b.numPoints; // accumulate coordinates for calculating weighted center
+-                    wy += b.y * b.numPoints;
+-                    numPoints += b.numPoints;
+-                }
+-            }
++    return hex.join("");
++}
+ 
+-            clusters.push(foundNeighbors ? createCluster(wx / numPoints, wy / numPoints, numPoints, -1) : p);
+-        }
++// `equals`
++// Can be called with any tinycolor input
++tinycolor.equals = function (color1, color2) {
++    if (!color1 || !color2) { return false; }
++    return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
++};
+ 
+-        return clusters;
+-    }
++tinycolor.random = function() {
++    return tinycolor.fromRatio({
++        r: mathRandom(),
++        g: mathRandom(),
++        b: mathRandom()
++    });
+ };
+ 
+-function createCluster(x, y, numPoints, id) {
+-    return {
+-        x: x, // weighted cluster center
+-        y: y,
+-        zoom: Infinity, // the last zoom the cluster was processed at
+-        id: id, // index of the source feature in the original input array
+-        numPoints: numPoints
+-    };
++
++// Modification Functions
++// ----------------------
++// Thanks to less.js for some of the basics here
++// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>
++
++function desaturate(color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.s -= amount / 100;
++    hsl.s = clamp01(hsl.s);
++    return tinycolor(hsl);
+ }
+ 
+-function createPointCluster(p, i) {
+-    var coords = p.geometry.coordinates;
+-    return createCluster(lngX(coords[0]), latY(coords[1]), 1, i);
++function saturate(color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.s += amount / 100;
++    hsl.s = clamp01(hsl.s);
++    return tinycolor(hsl);
+ }
+ 
+-function getClusterJSON(cluster) {
+-    return {
+-        type: 'Feature',
+-        properties: getClusterProperties(cluster),
+-        geometry: {
+-            type: 'Point',
+-            coordinates: [xLng(cluster.x), yLat(cluster.y)]
+-        }
+-    };
++function greyscale(color) {
++    return tinycolor(color).desaturate(100);
+ }
+ 
+-function getClusterProperties(cluster) {
+-    var count = cluster.numPoints;
+-    var abbrev = count >= 10000 ? Math.round(count / 1000) + 'k' :
+-                 count >= 1000 ? (Math.round(count / 100) / 10) + 'k' : count;
+-    return {
+-        cluster: true,
+-        point_count: count,
+-        point_count_abbreviated: abbrev
+-    };
++function lighten (color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.l += amount / 100;
++    hsl.l = clamp01(hsl.l);
++    return tinycolor(hsl);
+ }
+ 
+-// longitude/latitude to spherical mercator in [0..1] range
+-function lngX(lng) {
+-    return lng / 360 + 0.5;
++function brighten(color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var rgb = tinycolor(color).toRgb();
++    rgb.r = mathMax(0, mathMin(255, rgb.r - mathRound(255 * - (amount / 100))));
++    rgb.g = mathMax(0, mathMin(255, rgb.g - mathRound(255 * - (amount / 100))));
++    rgb.b = mathMax(0, mathMin(255, rgb.b - mathRound(255 * - (amount / 100))));
++    return tinycolor(rgb);
+ }
+-function latY(lat) {
+-    var sin = Math.sin(lat * Math.PI / 180),
+-        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
+-    return y < 0 ? 0 :
+-           y > 1 ? 1 : y;
++
++function darken (color, amount) {
++    amount = (amount === 0) ? 0 : (amount || 10);
++    var hsl = tinycolor(color).toHsl();
++    hsl.l -= amount / 100;
++    hsl.l = clamp01(hsl.l);
++    return tinycolor(hsl);
+ }
+ 
+-// spherical mercator to longitude/latitude
+-function xLng(x) {
+-    return (x - 0.5) * 360;
++// Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
++// Values outside of this range will be wrapped into this range.
++function spin(color, amount) {
++    var hsl = tinycolor(color).toHsl();
++    var hue = (hsl.h + amount) % 360;
++    hsl.h = hue < 0 ? 360 + hue : hue;
++    return tinycolor(hsl);
+ }
+-function yLat(y) {
+-    var y2 = (180 - y * 360) * Math.PI / 180;
+-    return 360 * Math.atan(Math.exp(y2)) / Math.PI - 90;
++
++// Combination Functions
++// ---------------------
++// Thanks to jQuery xColor for some of the ideas behind these
++// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>
++
++function complement(color) {
++    var hsl = tinycolor(color).toHsl();
++    hsl.h = (hsl.h + 180) % 360;
++    return tinycolor(hsl);
+ }
+ 
+-function extend(dest, src) {
+-    for (var id in src) dest[id] = src[id];
+-    return dest;
++function triad(color) {
++    var hsl = tinycolor(color).toHsl();
++    var h = hsl.h;
++    return [
++        tinycolor(color),
++        tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
++        tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
++    ];
+ }
+ 
+-function getX(p) {
+-    return p.x;
++function tetrad(color) {
++    var hsl = tinycolor(color).toHsl();
++    var h = hsl.h;
++    return [
++        tinycolor(color),
++        tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
++        tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
++        tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
++    ];
+ }
+-function getY(p) {
+-    return p.y;
++
++function splitcomplement(color) {
++    var hsl = tinycolor(color).toHsl();
++    var h = hsl.h;
++    return [
++        tinycolor(color),
++        tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l}),
++        tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l})
++    ];
+ }
+ 
+-},{"kdbush":178}],178:[function(require,module,exports){
+-'use strict';
++function analogous(color, results, slices) {
++    results = results || 6;
++    slices = slices || 30;
+ 
+-var sort = require('./sort');
+-var range = require('./range');
+-var within = require('./within');
++    var hsl = tinycolor(color).toHsl();
++    var part = 360 / slices;
++    var ret = [tinycolor(color)];
+ 
+-module.exports = kdbush;
++    for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results; ) {
++        hsl.h = (hsl.h + part) % 360;
++        ret.push(tinycolor(hsl));
++    }
++    return ret;
++}
+ 
+-function kdbush(points, getX, getY, nodeSize, ArrayType) {
+-    return new KDBush(points, getX, getY, nodeSize, ArrayType);
++function monochromatic(color, results) {
++    results = results || 6;
++    var hsv = tinycolor(color).toHsv();
++    var h = hsv.h, s = hsv.s, v = hsv.v;
++    var ret = [];
++    var modification = 1 / results;
++
++    while (results--) {
++        ret.push(tinycolor({ h: h, s: s, v: v}));
++        v = (v + modification) % 1;
++    }
++
++    return ret;
+ }
+ 
+-function KDBush(points, getX, getY, nodeSize, ArrayType) {
+-    getX = getX || defaultGetX;
+-    getY = getY || defaultGetY;
+-    ArrayType = ArrayType || Array;
++// Utility Functions
++// ---------------------
+ 
+-    this.nodeSize = nodeSize || 64;
+-    this.points = points;
++tinycolor.mix = function(color1, color2, amount) {
++    amount = (amount === 0) ? 0 : (amount || 50);
+ 
+-    this.ids = new ArrayType(points.length);
+-    this.coords = new ArrayType(points.length * 2);
++    var rgb1 = tinycolor(color1).toRgb();
++    var rgb2 = tinycolor(color2).toRgb();
+ 
+-    for (var i = 0; i < points.length; i++) {
+-        this.ids[i] = i;
+-        this.coords[2 * i] = getX(points[i]);
+-        this.coords[2 * i + 1] = getY(points[i]);
+-    }
++    var p = amount / 100;
+ 
+-    sort(this.ids, this.coords, this.nodeSize, 0, this.ids.length - 1, 0);
+-}
++    var rgba = {
++        r: ((rgb2.r - rgb1.r) * p) + rgb1.r,
++        g: ((rgb2.g - rgb1.g) * p) + rgb1.g,
++        b: ((rgb2.b - rgb1.b) * p) + rgb1.b,
++        a: ((rgb2.a - rgb1.a) * p) + rgb1.a
++    };
+ 
+-KDBush.prototype = {
+-    range: function (minX, minY, maxX, maxY) {
+-        return range(this.ids, this.coords, minX, minY, maxX, maxY, this.nodeSize);
+-    },
++    return tinycolor(rgba);
++};
+ 
+-    within: function (x, y, r) {
+-        return within(this.ids, this.coords, x, y, r, this.nodeSize);
+-    }
++
++// Readability Functions
++// ---------------------
++// <http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef (WCAG Version 2)
++
++// `contrast`
++// Analyze the 2 colors and returns the color contrast defined by (WCAG Version 2)
++tinycolor.readability = function(color1, color2) {
++    var c1 = tinycolor(color1);
++    var c2 = tinycolor(color2);
++    return (Math.max(c1.getLuminance(),c2.getLuminance())+0.05) / (Math.min(c1.getLuminance(),c2.getLuminance())+0.05);
+ };
+ 
+-function defaultGetX(p) { return p[0]; }
+-function defaultGetY(p) { return p[1]; }
++// `isReadable`
++// Ensure that foreground and background color combinations meet WCAG2 guidelines.
++// The third argument is an optional Object.
++//      the 'level' property states 'AA' or 'AAA' - if missing or invalid, it defaults to 'AA';
++//      the 'size' property states 'large' or 'small' - if missing or invalid, it defaults to 'small'.
++// If the entire object is absent, isReadable defaults to {level:"AA",size:"small"}.
+ 
+-},{"./range":179,"./sort":180,"./within":181}],179:[function(require,module,exports){
+-'use strict';
++// *Example*
++//    tinycolor.isReadable("#000", "#111") => false
++//    tinycolor.isReadable("#000", "#111",{level:"AA",size:"large"}) => false
++tinycolor.isReadable = function(color1, color2, wcag2) {
++    var readability = tinycolor.readability(color1, color2);
++    var wcag2Parms, out;
+ 
+-module.exports = range;
++    out = false;
+ 
+-function range(ids, coords, minX, minY, maxX, maxY, nodeSize) {
+-    var stack = [0, ids.length - 1, 0];
+-    var result = [];
+-    var x, y;
++    wcag2Parms = validateWCAG2Parms(wcag2);
++    switch (wcag2Parms.level + wcag2Parms.size) {
++        case "AAsmall":
++        case "AAAlarge":
++            out = readability >= 4.5;
++            break;
++        case "AAlarge":
++            out = readability >= 3;
++            break;
++        case "AAAsmall":
++            out = readability >= 7;
++            break;
++    }
++    return out;
+ 
+-    while (stack.length) {
+-        var axis = stack.pop();
+-        var right = stack.pop();
+-        var left = stack.pop();
++};
+ 
+-        if (right - left <= nodeSize) {
+-            for (var i = left; i <= right; i++) {
+-                x = coords[2 * i];
+-                y = coords[2 * i + 1];
+-                if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[i]);
+-            }
+-            continue;
++// `mostReadable`
++// Given a base color and a list of possible foreground or background
++// colors for that base, returns the most readable color.
++// Optionally returns Black or White if the most readable color is unreadable.
++// *Example*
++//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:false}).toHexString(); // "#112255"
++//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:true}).toHexString();  // "#ffffff"
++//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"large"}).toHexString(); // "#faf3f3"
++//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"small"}).toHexString(); // "#ffffff"
++tinycolor.mostReadable = function(baseColor, colorList, args) {
++    var bestColor = null;
++    var bestScore = 0;
++    var readability;
++    var includeFallbackColors, level, size ;
++    args = args || {};
++    includeFallbackColors = args.includeFallbackColors ;
++    level = args.level;
++    size = args.size;
++
++    for (var i= 0; i < colorList.length ; i++) {
++        readability = tinycolor.readability(baseColor, colorList[i]);
++        if (readability > bestScore) {
++            bestScore = readability;
++            bestColor = tinycolor(colorList[i]);
+         }
++    }
+ 
+-        var m = Math.floor((left + right) / 2);
++    if (tinycolor.isReadable(baseColor, bestColor, {"level":level,"size":size}) || !includeFallbackColors) {
++        return bestColor;
++    }
++    else {
++        args.includeFallbackColors=false;
++        return tinycolor.mostReadable(baseColor,["#fff", "#000"],args);
++    }
++};
+ 
+-        x = coords[2 * m];
+-        y = coords[2 * m + 1];
+ 
+-        if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[m]);
++// Big List of Colors
++// ------------------
++// <http://www.w3.org/TR/css3-color/#svg-color>
++var names = tinycolor.names = {
++    aliceblue: "f0f8ff",
++    antiquewhite: "faebd7",
++    aqua: "0ff",
++    aquamarine: "7fffd4",
++    azure: "f0ffff",
++    beige: "f5f5dc",
++    bisque: "ffe4c4",
++    black: "000",
++    blanchedalmond: "ffebcd",
++    blue: "00f",
++    blueviolet: "8a2be2",
++    brown: "a52a2a",
++    burlywood: "deb887",
++    burntsienna: "ea7e5d",
++    cadetblue: "5f9ea0",
++    chartreuse: "7fff00",
++    chocolate: "d2691e",
++    coral: "ff7f50",
++    cornflowerblue: "6495ed",
++    cornsilk: "fff8dc",
++    crimson: "dc143c",
++    cyan: "0ff",
++    darkblue: "00008b",
++    darkcyan: "008b8b",
++    darkgoldenrod: "b8860b",
++    darkgray: "a9a9a9",
++    darkgreen: "006400",
++    darkgrey: "a9a9a9",
++    darkkhaki: "bdb76b",
++    darkmagenta: "8b008b",
++    darkolivegreen: "556b2f",
++    darkorange: "ff8c00",
++    darkorchid: "9932cc",
++    darkred: "8b0000",
++    darksalmon: "e9967a",
++    darkseagreen: "8fbc8f",
++    darkslateblue: "483d8b",
++    darkslategray: "2f4f4f",
++    darkslategrey: "2f4f4f",
++    darkturquoise: "00ced1",
++    darkviolet: "9400d3",
++    deeppink: "ff1493",
++    deepskyblue: "00bfff",
++    dimgray: "696969",
++    dimgrey: "696969",
++    dodgerblue: "1e90ff",
++    firebrick: "b22222",
++    floralwhite: "fffaf0",
++    forestgreen: "228b22",
++    fuchsia: "f0f",
++    gainsboro: "dcdcdc",
++    ghostwhite: "f8f8ff",
++    gold: "ffd700",
++    goldenrod: "daa520",
++    gray: "808080",
++    green: "008000",
++    greenyellow: "adff2f",
++    grey: "808080",
++    honeydew: "f0fff0",
++    hotpink: "ff69b4",
++    indianred: "cd5c5c",
++    indigo: "4b0082",
++    ivory: "fffff0",
++    khaki: "f0e68c",
++    lavender: "e6e6fa",
++    lavenderblush: "fff0f5",
++    lawngreen: "7cfc00",
++    lemonchiffon: "fffacd",
++    lightblue: "add8e6",
++    lightcoral: "f08080",
++    lightcyan: "e0ffff",
++    lightgoldenrodyellow: "fafad2",
++    lightgray: "d3d3d3",
++    lightgreen: "90ee90",
++    lightgrey: "d3d3d3",
++    lightpink: "ffb6c1",
++    lightsalmon: "ffa07a",
++    lightseagreen: "20b2aa",
++    lightskyblue: "87cefa",
++    lightslategray: "789",
++    lightslategrey: "789",
++    lightsteelblue: "b0c4de",
++    lightyellow: "ffffe0",
++    lime: "0f0",
++    limegreen: "32cd32",
++    linen: "faf0e6",
++    magenta: "f0f",
++    maroon: "800000",
++    mediumaquamarine: "66cdaa",
++    mediumblue: "0000cd",
++    mediumorchid: "ba55d3",
++    mediumpurple: "9370db",
++    mediumseagreen: "3cb371",
++    mediumslateblue: "7b68ee",
++    mediumspringgreen: "00fa9a",
++    mediumturquoise: "48d1cc",
++    mediumvioletred: "c71585",
++    midnightblue: "191970",
++    mintcream: "f5fffa",
++    mistyrose: "ffe4e1",
++    moccasin: "ffe4b5",
++    navajowhite: "ffdead",
++    navy: "000080",
++    oldlace: "fdf5e6",
++    olive: "808000",
++    olivedrab: "6b8e23",
++    orange: "ffa500",
++    orangered: "ff4500",
++    orchid: "da70d6",
++    palegoldenrod: "eee8aa",
++    palegreen: "98fb98",
++    paleturquoise: "afeeee",
++    palevioletred: "db7093",
++    papayawhip: "ffefd5",
++    peachpuff: "ffdab9",
++    peru: "cd853f",
++    pink: "ffc0cb",
++    plum: "dda0dd",
++    powderblue: "b0e0e6",
++    purple: "800080",
++    rebeccapurple: "663399",
++    red: "f00",
++    rosybrown: "bc8f8f",
++    royalblue: "4169e1",
++    saddlebrown: "8b4513",
++    salmon: "fa8072",
++    sandybrown: "f4a460",
++    seagreen: "2e8b57",
++    seashell: "fff5ee",
++    sienna: "a0522d",
++    silver: "c0c0c0",
++    skyblue: "87ceeb",
++    slateblue: "6a5acd",
++    slategray: "708090",
++    slategrey: "708090",
++    snow: "fffafa",
++    springgreen: "00ff7f",
++    steelblue: "4682b4",
++    tan: "d2b48c",
++    teal: "008080",
++    thistle: "d8bfd8",
++    tomato: "ff6347",
++    turquoise: "40e0d0",
++    violet: "ee82ee",
++    wheat: "f5deb3",
++    white: "fff",
++    whitesmoke: "f5f5f5",
++    yellow: "ff0",
++    yellowgreen: "9acd32"
++};
+ 
+-        var nextAxis = (axis + 1) % 2;
++// Make it easy to access colors via `hexNames[hex]`
++var hexNames = tinycolor.hexNames = flip(names);
+ 
+-        if (axis === 0 ? minX <= x : minY <= y) {
+-            stack.push(left);
+-            stack.push(m - 1);
+-            stack.push(nextAxis);
+-        }
+-        if (axis === 0 ? maxX >= x : maxY >= y) {
+-            stack.push(m + 1);
+-            stack.push(right);
+-            stack.push(nextAxis);
++
++// Utilities
++// ---------
++
++// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
++function flip(o) {
++    var flipped = { };
++    for (var i in o) {
++        if (o.hasOwnProperty(i)) {
++            flipped[o[i]] = i;
+         }
+     }
+-
+-    return result;
++    return flipped;
+ }
+ 
+-},{}],180:[function(require,module,exports){
+-'use strict';
++// Return a valid alpha value [0,1] with all invalid values being set to 1
++function boundAlpha(a) {
++    a = parseFloat(a);
+ 
+-module.exports = sortKD;
++    if (isNaN(a) || a < 0 || a > 1) {
++        a = 1;
++    }
+ 
+-function sortKD(ids, coords, nodeSize, left, right, depth) {
+-    if (right - left <= nodeSize) return;
++    return a;
++}
+ 
+-    var m = Math.floor((left + right) / 2);
++// Take input from [0, n] and return it as [0, 1]
++function bound01(n, max) {
++    if (isOnePointZero(n)) { n = "100%"; }
+ 
+-    select(ids, coords, m, left, right, depth % 2);
++    var processPercent = isPercentage(n);
++    n = mathMin(max, mathMax(0, parseFloat(n)));
++
++    // Automatically convert percentage into number
++    if (processPercent) {
++        n = parseInt(n * max, 10) / 100;
++    }
++
++    // Handle floating point rounding errors
++    if ((Math.abs(n - max) < 0.000001)) {
++        return 1;
++    }
+ 
+-    sortKD(ids, coords, nodeSize, left, m - 1, depth + 1);
+-    sortKD(ids, coords, nodeSize, m + 1, right, depth + 1);
++    // Convert into [0, 1] range if it isn't already
++    return (n % max) / parseFloat(max);
+ }
+ 
+-function select(ids, coords, k, left, right, inc) {
+-
+-    while (right > left) {
+-        if (right - left > 600) {
+-            var n = right - left + 1;
+-            var m = k - left + 1;
+-            var z = Math.log(n);
+-            var s = 0.5 * Math.exp(2 * z / 3);
+-            var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
+-            var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
+-            var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
+-            select(ids, coords, k, newLeft, newRight, inc);
+-        }
++// Force a number between 0 and 1
++function clamp01(val) {
++    return mathMin(1, mathMax(0, val));
++}
+ 
+-        var t = coords[2 * k + inc];
+-        var i = left;
+-        var j = right;
++// Parse a base-16 hex value into a base-10 integer
++function parseIntFromHex(val) {
++    return parseInt(val, 16);
++}
+ 
+-        swapItem(ids, coords, left, k);
+-        if (coords[2 * right + inc] > t) swapItem(ids, coords, left, right);
++// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
++// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
++function isOnePointZero(n) {
++    return typeof n == "string" && n.indexOf('.') != -1 && parseFloat(n) === 1;
++}
+ 
+-        while (i < j) {
+-            swapItem(ids, coords, i, j);
+-            i++;
+-            j--;
+-            while (coords[2 * i + inc] < t) i++;
+-            while (coords[2 * j + inc] > t) j--;
+-        }
++// Check to see if string passed in is a percentage
++function isPercentage(n) {
++    return typeof n === "string" && n.indexOf('%') != -1;
++}
+ 
+-        if (coords[2 * left + inc] === t) swapItem(ids, coords, left, j);
+-        else {
+-            j++;
+-            swapItem(ids, coords, j, right);
+-        }
++// Force a hex value to have 2 characters
++function pad2(c) {
++    return c.length == 1 ? '0' + c : '' + c;
++}
+ 
+-        if (j <= k) left = j + 1;
+-        if (k <= j) right = j - 1;
++// Replace a decimal with it's percentage value
++function convertToPercentage(n) {
++    if (n <= 1) {
++        n = (n * 100) + "%";
+     }
+-}
+ 
+-function swapItem(ids, coords, i, j) {
+-    swap(ids, i, j);
+-    swap(coords, 2 * i, 2 * j);
+-    swap(coords, 2 * i + 1, 2 * j + 1);
++    return n;
+ }
+ 
+-function swap(arr, i, j) {
+-    var tmp = arr[i];
+-    arr[i] = arr[j];
+-    arr[j] = tmp;
++// Converts a decimal to a hex value
++function convertDecimalToHex(d) {
++    return Math.round(parseFloat(d) * 255).toString(16);
++}
++// Converts a hex value to a decimal
++function convertHexToDecimal(h) {
++    return (parseIntFromHex(h) / 255);
+ }
+ 
+-},{}],181:[function(require,module,exports){
+-'use strict';
++var matchers = (function() {
+ 
+-module.exports = within;
++    // <http://www.w3.org/TR/css3-values/#integers>
++    var CSS_INTEGER = "[-\\+]?\\d+%?";
+ 
+-function within(ids, coords, qx, qy, r, nodeSize) {
+-    var stack = [0, ids.length - 1, 0];
+-    var result = [];
+-    var r2 = r * r;
++    // <http://www.w3.org/TR/css3-values/#number-value>
++    var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";
+ 
+-    while (stack.length) {
+-        var axis = stack.pop();
+-        var right = stack.pop();
+-        var left = stack.pop();
++    // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
++    var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";
+ 
+-        if (right - left <= nodeSize) {
+-            for (var i = left; i <= right; i++) {
+-                if (sqDist(coords[2 * i], coords[2 * i + 1], qx, qy) <= r2) result.push(ids[i]);
+-            }
+-            continue;
+-        }
++    // Actual matching.
++    // Parentheses and commas are optional, but not required.
++    // Whitespace can take the place of commas or opening paren
++    var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
++    var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+ 
+-        var m = Math.floor((left + right) / 2);
++    return {
++        CSS_UNIT: new RegExp(CSS_UNIT),
++        rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
++        rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
++        hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
++        hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
++        hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
++        hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
++        hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
++        hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
++        hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
++        hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
++    };
++})();
+ 
+-        var x = coords[2 * m];
+-        var y = coords[2 * m + 1];
++// `isValidCSSUnit`
++// Take in a single string / number and check to see if it looks like a CSS unit
++// (see `matchers` above for definition).
++function isValidCSSUnit(color) {
++    return !!matchers.CSS_UNIT.exec(color);
++}
+ 
+-        if (sqDist(x, y, qx, qy) <= r2) result.push(ids[m]);
++// `stringInputToObject`
++// Permissive string parsing.  Take in a number of formats, and output an object
++// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
++function stringInputToObject(color) {
+ 
+-        var nextAxis = (axis + 1) % 2;
++    color = color.replace(trimLeft,'').replace(trimRight, '').toLowerCase();
++    var named = false;
++    if (names[color]) {
++        color = names[color];
++        named = true;
++    }
++    else if (color == 'transparent') {
++        return { r: 0, g: 0, b: 0, a: 0, format: "name" };
++    }
+ 
+-        if (axis === 0 ? qx - r <= x : qy - r <= y) {
+-            stack.push(left);
+-            stack.push(m - 1);
+-            stack.push(nextAxis);
+-        }
+-        if (axis === 0 ? qx + r >= x : qy + r >= y) {
+-            stack.push(m + 1);
+-            stack.push(right);
+-            stack.push(nextAxis);
+-        }
++    // Try to match string input using regular expressions.
++    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
++    // Just return an object and let the conversion functions handle that.
++    // This way the result will be the same whether the tinycolor is initialized with string or object.
++    var match;
++    if ((match = matchers.rgb.exec(color))) {
++        return { r: match[1], g: match[2], b: match[3] };
++    }
++    if ((match = matchers.rgba.exec(color))) {
++        return { r: match[1], g: match[2], b: match[3], a: match[4] };
++    }
++    if ((match = matchers.hsl.exec(color))) {
++        return { h: match[1], s: match[2], l: match[3] };
++    }
++    if ((match = matchers.hsla.exec(color))) {
++        return { h: match[1], s: match[2], l: match[3], a: match[4] };
++    }
++    if ((match = matchers.hsv.exec(color))) {
++        return { h: match[1], s: match[2], v: match[3] };
++    }
++    if ((match = matchers.hsva.exec(color))) {
++        return { h: match[1], s: match[2], v: match[3], a: match[4] };
++    }
++    if ((match = matchers.hex8.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1]),
++            g: parseIntFromHex(match[2]),
++            b: parseIntFromHex(match[3]),
++            a: convertHexToDecimal(match[4]),
++            format: named ? "name" : "hex8"
++        };
++    }
++    if ((match = matchers.hex6.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1]),
++            g: parseIntFromHex(match[2]),
++            b: parseIntFromHex(match[3]),
++            format: named ? "name" : "hex"
++        };
++    }
++    if ((match = matchers.hex4.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1] + '' + match[1]),
++            g: parseIntFromHex(match[2] + '' + match[2]),
++            b: parseIntFromHex(match[3] + '' + match[3]),
++            a: convertHexToDecimal(match[4] + '' + match[4]),
++            format: named ? "name" : "hex8"
++        };
++    }
++    if ((match = matchers.hex3.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1] + '' + match[1]),
++            g: parseIntFromHex(match[2] + '' + match[2]),
++            b: parseIntFromHex(match[3] + '' + match[3]),
++            format: named ? "name" : "hex"
++        };
+     }
+ 
+-    return result;
++    return false;
+ }
+ 
+-function sqDist(ax, ay, bx, by) {
+-    var dx = ax - bx;
+-    var dy = ay - by;
+-    return dx * dx + dy * dy;
++function validateWCAG2Parms(parms) {
++    // return valid WCAG2 parms for isReadable.
++    // If input parms are invalid, return {"level":"AA", "size":"small"}
++    var level, size;
++    parms = parms || {"level":"AA", "size":"small"};
++    level = (parms.level || "AA").toUpperCase();
++    size = (parms.size || "small").toLowerCase();
++    if (level !== "AA" && level !== "AAA") {
++        level = "AA";
++    }
++    if (size !== "small" && size !== "large") {
++        size = "small";
++    }
++    return {"level":level, "size":size};
+ }
+ 
+-},{}],182:[function(require,module,exports){
++// Node: Export function
++if (typeof module !== "undefined" && module.exports) {
++    module.exports = tinycolor;
++}
++// AMD/requirejs: Define the module
++else if (typeof define === 'function' && define.amd) {
++    define(function () {return tinycolor;});
++}
++// Browser: Expose to window
++else {
++    window.tinycolor = tinycolor;
++}
++
++})(Math);
++
++},{}],180:[function(require,module,exports){
+ /*
+  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+  *
+@@ -41289,1977 +43106,1450 @@ function sqDist(ax, ay, bx, by) {
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  * Ported from Webkit
+- * http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/UnitBezier.h
+- */
+-
+-module.exports = UnitBezier;
+-
+-function UnitBezier(p1x, p1y, p2x, p2y) {
+-    // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).
+-    this.cx = 3.0 * p1x;
+-    this.bx = 3.0 * (p2x - p1x) - this.cx;
+-    this.ax = 1.0 - this.cx - this.bx;
+-
+-    this.cy = 3.0 * p1y;
+-    this.by = 3.0 * (p2y - p1y) - this.cy;
+-    this.ay = 1.0 - this.cy - this.by;
+-
+-    this.p1x = p1x;
+-    this.p1y = p2y;
+-    this.p2x = p2x;
+-    this.p2y = p2y;
+-}
+-
+-UnitBezier.prototype.sampleCurveX = function(t) {
+-    // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.
+-    return ((this.ax * t + this.bx) * t + this.cx) * t;
+-};
+-
+-UnitBezier.prototype.sampleCurveY = function(t) {
+-    return ((this.ay * t + this.by) * t + this.cy) * t;
+-};
+-
+-UnitBezier.prototype.sampleCurveDerivativeX = function(t) {
+-    return (3.0 * this.ax * t + 2.0 * this.bx) * t + this.cx;
+-};
+-
+-UnitBezier.prototype.solveCurveX = function(x, epsilon) {
+-    if (typeof epsilon === 'undefined') epsilon = 1e-6;
+-
+-    var t0, t1, t2, x2, i;
+-
+-    // First try a few iterations of Newton's method -- normally very fast.
+-    for (t2 = x, i = 0; i < 8; i++) {
+-
+-        x2 = this.sampleCurveX(t2) - x;
+-        if (Math.abs(x2) < epsilon) return t2;
+-
+-        var d2 = this.sampleCurveDerivativeX(t2);
+-        if (Math.abs(d2) < 1e-6) break;
+-
+-        t2 = t2 - x2 / d2;
+-    }
+-
+-    // Fall back to the bisection method for reliability.
+-    t0 = 0.0;
+-    t1 = 1.0;
+-    t2 = x;
+-
+-    if (t2 < t0) return t0;
+-    if (t2 > t1) return t1;
+-
+-    while (t0 < t1) {
+-
+-        x2 = this.sampleCurveX(t2);
+-        if (Math.abs(x2 - x) < epsilon) return t2;
+-
+-        if (x > x2) {
+-            t0 = t2;
+-        } else {
+-            t1 = t2;
+-        }
+-
+-        t2 = (t1 - t0) * 0.5 + t0;
+-    }
+-
+-    // Failure.
+-    return t2;
+-};
+-
+-UnitBezier.prototype.solve = function(x, epsilon) {
+-    return this.sampleCurveY(this.solveCurveX(x, epsilon));
+-};
+-
+-},{}],183:[function(require,module,exports){
+-module.exports.VectorTile = require('./lib/vectortile.js');
+-module.exports.VectorTileFeature = require('./lib/vectortilefeature.js');
+-module.exports.VectorTileLayer = require('./lib/vectortilelayer.js');
+-
+-},{"./lib/vectortile.js":184,"./lib/vectortilefeature.js":185,"./lib/vectortilelayer.js":186}],184:[function(require,module,exports){
+-'use strict';
+-
+-var VectorTileLayer = require('./vectortilelayer');
+-
+-module.exports = VectorTile;
+-
+-function VectorTile(pbf, end) {
+-    this.layers = pbf.readFields(readTile, {}, end);
+-}
+-
+-function readTile(tag, layers, pbf) {
+-    if (tag === 3) {
+-        var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);
+-        if (layer.length) layers[layer.name] = layer;
+-    }
+-}
+-
+-
+-},{"./vectortilelayer":186}],185:[function(require,module,exports){
+-'use strict';
+-
+-var Point = require('point-geometry');
+-
+-module.exports = VectorTileFeature;
+-
+-function VectorTileFeature(pbf, end, extent, keys, values) {
+-    // Public
+-    this.properties = {};
+-    this.extent = extent;
+-    this.type = 0;
+-
+-    // Private
+-    this._pbf = pbf;
+-    this._geometry = -1;
+-    this._keys = keys;
+-    this._values = values;
+-
+-    pbf.readFields(readFeature, this, end);
+-}
+-
+-function readFeature(tag, feature, pbf) {
+-    if (tag == 1) feature._id = pbf.readVarint();
+-    else if (tag == 2) readTag(pbf, feature);
+-    else if (tag == 3) feature.type = pbf.readVarint();
+-    else if (tag == 4) feature._geometry = pbf.pos;
+-}
+-
+-function readTag(pbf, feature) {
+-    var end = pbf.readVarint() + pbf.pos;
+-
+-    while (pbf.pos < end) {
+-        var key = feature._keys[pbf.readVarint()],
+-            value = feature._values[pbf.readVarint()];
+-        feature.properties[key] = value;
+-    }
+-}
+-
+-VectorTileFeature.types = ['Unknown', 'Point', 'LineString', 'Polygon'];
+-
+-VectorTileFeature.prototype.loadGeometry = function() {
+-    var pbf = this._pbf;
+-    pbf.pos = this._geometry;
+-
+-    var end = pbf.readVarint() + pbf.pos,
+-        cmd = 1,
+-        length = 0,
+-        x = 0,
+-        y = 0,
+-        lines = [],
+-        line;
+-
+-    while (pbf.pos < end) {
+-        if (!length) {
+-            var cmdLen = pbf.readVarint();
+-            cmd = cmdLen & 0x7;
+-            length = cmdLen >> 3;
+-        }
+-
+-        length--;
+-
+-        if (cmd === 1 || cmd === 2) {
+-            x += pbf.readSVarint();
+-            y += pbf.readSVarint();
+-
+-            if (cmd === 1) { // moveTo
+-                if (line) lines.push(line);
+-                line = [];
+-            }
+-
+-            line.push(new Point(x, y));
+-
+-        } else if (cmd === 7) {
+-
+-            // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90
+-            if (line) {
+-                line.push(line[0].clone()); // closePolygon
+-            }
+-
+-        } else {
+-            throw new Error('unknown command ' + cmd);
+-        }
+-    }
+-
+-    if (line) lines.push(line);
+-
+-    return lines;
+-};
+-
+-VectorTileFeature.prototype.bbox = function() {
+-    var pbf = this._pbf;
+-    pbf.pos = this._geometry;
+-
+-    var end = pbf.readVarint() + pbf.pos,
+-        cmd = 1,
+-        length = 0,
+-        x = 0,
+-        y = 0,
+-        x1 = Infinity,
+-        x2 = -Infinity,
+-        y1 = Infinity,
+-        y2 = -Infinity;
+-
+-    while (pbf.pos < end) {
+-        if (!length) {
+-            var cmdLen = pbf.readVarint();
+-            cmd = cmdLen & 0x7;
+-            length = cmdLen >> 3;
+-        }
+-
+-        length--;
+-
+-        if (cmd === 1 || cmd === 2) {
+-            x += pbf.readSVarint();
+-            y += pbf.readSVarint();
+-            if (x < x1) x1 = x;
+-            if (x > x2) x2 = x;
+-            if (y < y1) y1 = y;
+-            if (y > y2) y2 = y;
+-
+-        } else if (cmd !== 7) {
+-            throw new Error('unknown command ' + cmd);
+-        }
+-    }
+-
+-    return [x1, y1, x2, y2];
+-};
+-
+-VectorTileFeature.prototype.toGeoJSON = function(x, y, z) {
+-    var size = this.extent * Math.pow(2, z),
+-        x0 = this.extent * x,
+-        y0 = this.extent * y,
+-        coords = this.loadGeometry(),
+-        type = VectorTileFeature.types[this.type],
+-        i, j;
+-
+-    function project(line) {
+-        for (var j = 0; j < line.length; j++) {
+-            var p = line[j], y2 = 180 - (p.y + y0) * 360 / size;
+-            line[j] = [
+-                (p.x + x0) * 360 / size - 180,
+-                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
+-            ];
+-        }
+-    }
+-
+-    switch (this.type) {
+-    case 1:
+-        var points = [];
+-        for (i = 0; i < coords.length; i++) {
+-            points[i] = coords[i][0];
+-        }
+-        coords = points;
+-        project(coords);
+-        break;
+-
+-    case 2:
+-        for (i = 0; i < coords.length; i++) {
+-            project(coords[i]);
+-        }
+-        break;
+-
+-    case 3:
+-        coords = classifyRings(coords);
+-        for (i = 0; i < coords.length; i++) {
+-            for (j = 0; j < coords[i].length; j++) {
+-                project(coords[i][j]);
+-            }
+-        }
+-        break;
+-    }
++ * http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/UnitBezier.h
++ */
+ 
+-    if (coords.length === 1) {
+-        coords = coords[0];
+-    } else {
+-        type = 'Multi' + type;
+-    }
++module.exports = UnitBezier;
+ 
+-    var result = {
+-        type: "Feature",
+-        geometry: {
+-            type: type,
+-            coordinates: coords
+-        },
+-        properties: this.properties
+-    };
++function UnitBezier(p1x, p1y, p2x, p2y) {
++    // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).
++    this.cx = 3.0 * p1x;
++    this.bx = 3.0 * (p2x - p1x) - this.cx;
++    this.ax = 1.0 - this.cx - this.bx;
+ 
+-    if ('_id' in this) {
+-        result.id = this._id;
+-    }
++    this.cy = 3.0 * p1y;
++    this.by = 3.0 * (p2y - p1y) - this.cy;
++    this.ay = 1.0 - this.cy - this.by;
+ 
+-    return result;
++    this.p1x = p1x;
++    this.p1y = p2y;
++    this.p2x = p2x;
++    this.p2y = p2y;
++}
++
++UnitBezier.prototype.sampleCurveX = function(t) {
++    // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.
++    return ((this.ax * t + this.bx) * t + this.cx) * t;
+ };
+ 
+-// classifies an array of rings into polygons with outer rings and holes
++UnitBezier.prototype.sampleCurveY = function(t) {
++    return ((this.ay * t + this.by) * t + this.cy) * t;
++};
+ 
+-function classifyRings(rings) {
+-    var len = rings.length;
++UnitBezier.prototype.sampleCurveDerivativeX = function(t) {
++    return (3.0 * this.ax * t + 2.0 * this.bx) * t + this.cx;
++};
+ 
+-    if (len <= 1) return [rings];
++UnitBezier.prototype.solveCurveX = function(x, epsilon) {
++    if (typeof epsilon === 'undefined') epsilon = 1e-6;
+ 
+-    var polygons = [],
+-        polygon,
+-        ccw;
++    var t0, t1, t2, x2, i;
+ 
+-    for (var i = 0; i < len; i++) {
+-        var area = signedArea(rings[i]);
+-        if (area === 0) continue;
++    // First try a few iterations of Newton's method -- normally very fast.
++    for (t2 = x, i = 0; i < 8; i++) {
+ 
+-        if (ccw === undefined) ccw = area < 0;
++        x2 = this.sampleCurveX(t2) - x;
++        if (Math.abs(x2) < epsilon) return t2;
+ 
+-        if (ccw === area < 0) {
+-            if (polygon) polygons.push(polygon);
+-            polygon = [rings[i]];
++        var d2 = this.sampleCurveDerivativeX(t2);
++        if (Math.abs(d2) < 1e-6) break;
+ 
+-        } else {
+-            polygon.push(rings[i]);
+-        }
++        t2 = t2 - x2 / d2;
+     }
+-    if (polygon) polygons.push(polygon);
+ 
+-    return polygons;
+-}
++    // Fall back to the bisection method for reliability.
++    t0 = 0.0;
++    t1 = 1.0;
++    t2 = x;
+ 
+-function signedArea(ring) {
+-    var sum = 0;
+-    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
+-        p1 = ring[i];
+-        p2 = ring[j];
+-        sum += (p2.x - p1.x) * (p1.y + p2.y);
+-    }
+-    return sum;
+-}
++    if (t2 < t0) return t0;
++    if (t2 > t1) return t1;
+ 
+-},{"point-geometry":174}],186:[function(require,module,exports){
+-'use strict';
++    while (t0 < t1) {
+ 
+-var VectorTileFeature = require('./vectortilefeature.js');
++        x2 = this.sampleCurveX(t2);
++        if (Math.abs(x2 - x) < epsilon) return t2;
+ 
+-module.exports = VectorTileLayer;
++        if (x > x2) {
++            t0 = t2;
++        } else {
++            t1 = t2;
++        }
+ 
+-function VectorTileLayer(pbf, end) {
+-    // Public
+-    this.version = 1;
+-    this.name = null;
+-    this.extent = 4096;
+-    this.length = 0;
++        t2 = (t1 - t0) * 0.5 + t0;
++    }
+ 
+-    // Private
+-    this._pbf = pbf;
+-    this._keys = [];
+-    this._values = [];
+-    this._features = [];
++    // Failure.
++    return t2;
++};
+ 
+-    pbf.readFields(readLayer, this, end);
++UnitBezier.prototype.solve = function(x, epsilon) {
++    return this.sampleCurveY(this.solveCurveX(x, epsilon));
++};
+ 
+-    this.length = this._features.length;
++},{}],181:[function(require,module,exports){
++if (typeof Object.create === 'function') {
++  // implementation from standard node.js 'util' module
++  module.exports = function inherits(ctor, superCtor) {
++    ctor.super_ = superCtor
++    ctor.prototype = Object.create(superCtor.prototype, {
++      constructor: {
++        value: ctor,
++        enumerable: false,
++        writable: true,
++        configurable: true
++      }
++    });
++  };
++} else {
++  // old school shim for old browsers
++  module.exports = function inherits(ctor, superCtor) {
++    ctor.super_ = superCtor
++    var TempCtor = function () {}
++    TempCtor.prototype = superCtor.prototype
++    ctor.prototype = new TempCtor()
++    ctor.prototype.constructor = ctor
++  }
+ }
+ 
+-function readLayer(tag, layer, pbf) {
+-    if (tag === 15) layer.version = pbf.readVarint();
+-    else if (tag === 1) layer.name = pbf.readString();
+-    else if (tag === 5) layer.extent = pbf.readVarint();
+-    else if (tag === 2) layer._features.push(pbf.pos);
+-    else if (tag === 3) layer._keys.push(pbf.readString());
+-    else if (tag === 4) layer._values.push(readValueMessage(pbf));
++},{}],182:[function(require,module,exports){
++module.exports = function isBuffer(arg) {
++  return arg && typeof arg === 'object'
++    && typeof arg.copy === 'function'
++    && typeof arg.fill === 'function'
++    && typeof arg.readUInt8 === 'function';
+ }
++},{}],183:[function(require,module,exports){
++(function (process,global){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-function readValueMessage(pbf) {
+-    var value = null,
+-        end = pbf.readVarint() + pbf.pos;
+-
+-    while (pbf.pos < end) {
+-        var tag = pbf.readVarint() >> 3;
+-
+-        value = tag === 1 ? pbf.readString() :
+-            tag === 2 ? pbf.readFloat() :
+-            tag === 3 ? pbf.readDouble() :
+-            tag === 4 ? pbf.readVarint64() :
+-            tag === 5 ? pbf.readVarint() :
+-            tag === 6 ? pbf.readSVarint() :
+-            tag === 7 ? pbf.readBoolean() : null;
++var formatRegExp = /%[sdj%]/g;
++exports.format = function(f) {
++  if (!isString(f)) {
++    var objects = [];
++    for (var i = 0; i < arguments.length; i++) {
++      objects.push(inspect(arguments[i]));
+     }
++    return objects.join(' ');
++  }
+ 
+-    return value;
+-}
+-
+-// return feature `i` from this layer as a `VectorTileFeature`
+-VectorTileLayer.prototype.feature = function(i) {
+-    if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');
+-
+-    this._pbf.pos = this._features[i];
+-
+-    var end = this._pbf.readVarint() + this._pbf.pos;
+-    return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);
+-};
+-
+-},{"./vectortilefeature.js":185}],187:[function(require,module,exports){
+-var Pbf = require('pbf')
+-var vtpb = require('./vector-tile-pb')
+-var GeoJSONWrapper = require('./lib/geojson_wrapper')
+-
+-module.exports = fromVectorTileJs
+-module.exports.fromVectorTileJs = fromVectorTileJs
+-module.exports.fromGeojsonVt = fromGeojsonVt
+-module.exports.GeoJSONWrapper = GeoJSONWrapper
+-
+-/**
+- * Serialize a vector-tile-js-created tile to pbf
+- *
+- * @param {Object} tile
+- * @return {Buffer} uncompressed, pbf-serialized tile data
+- */
+-function fromVectorTileJs (tile) {
+-  var layers = []
+-  for (var l in tile.layers) {
+-    layers.push(prepareLayer(tile.layers[l]))
++  var i = 1;
++  var args = arguments;
++  var len = args.length;
++  var str = String(f).replace(formatRegExp, function(x) {
++    if (x === '%%') return '%';
++    if (i >= len) return x;
++    switch (x) {
++      case '%s': return String(args[i++]);
++      case '%d': return Number(args[i++]);
++      case '%j':
++        try {
++          return JSON.stringify(args[i++]);
++        } catch (_) {
++          return '[Circular]';
++        }
++      default:
++        return x;
++    }
++  });
++  for (var x = args[i]; i < len; x = args[++i]) {
++    if (isNull(x) || !isObject(x)) {
++      str += ' ' + x;
++    } else {
++      str += ' ' + inspect(x);
++    }
+   }
++  return str;
++};
+ 
+-  var out = new Pbf()
+-  vtpb.tile.write({ layers: layers }, out)
+-  return out.finish()
+-}
+ 
+-/**
+- * Serialized a geojson-vt-created tile to pbf.
+- *
+- * @param {Object} layers - An object mapping layer names to geojson-vt-created vector tile objects
+- * @return {Buffer} uncompressed, pbf-serialized tile data
+- */
+-function fromGeojsonVt (layers) {
+-  var l = {}
+-  for (var k in layers) {
+-    l[k] = new GeoJSONWrapper(layers[k].features)
+-    l[k].name = k
++// Mark that a method should not be used.
++// Returns a modified function which warns once by default.
++// If --no-deprecation is set, then it is a no-op.
++exports.deprecate = function(fn, msg) {
++  // Allow for deprecating things in the process of starting up.
++  if (isUndefined(global.process)) {
++    return function() {
++      return exports.deprecate(fn, msg).apply(this, arguments);
++    };
+   }
+-  return fromVectorTileJs({layers: l})
+-}
+ 
+-/**
+- * Prepare the given layer to be serialized by the auto-generated pbf
+- * serializer by encoding the feature geometry and properties.
+- */
+-function prepareLayer (layer) {
+-  var preparedLayer = {
+-    name: layer.name || '',
+-    version: layer.version || 1,
+-    extent: layer.extent || 4096,
+-    keys: [],
+-    values: [],
+-    features: []
++  if (process.noDeprecation === true) {
++    return fn;
+   }
+ 
+-  var keycache = {}
+-  var valuecache = {}
+-
+-  for (var i = 0; i < layer.length; i++) {
+-    var feature = layer.feature(i)
+-    feature.geometry = encodeGeometry(feature.loadGeometry())
+-
+-    var tags = []
+-    for (var key in feature.properties) {
+-      var keyIndex = keycache[key]
+-      if (typeof keyIndex === 'undefined') {
+-        preparedLayer.keys.push(key)
+-        keyIndex = preparedLayer.keys.length - 1
+-        keycache[key] = keyIndex
+-      }
+-      var value = wrapValue(feature.properties[key])
+-      var valueIndex = valuecache[value.key]
+-      if (typeof valueIndex === 'undefined') {
+-        preparedLayer.values.push(value)
+-        valueIndex = preparedLayer.values.length - 1
+-        valuecache[value.key] = valueIndex
++  var warned = false;
++  function deprecated() {
++    if (!warned) {
++      if (process.throwDeprecation) {
++        throw new Error(msg);
++      } else if (process.traceDeprecation) {
++        console.trace(msg);
++      } else {
++        console.error(msg);
+       }
+-      tags.push(keyIndex)
+-      tags.push(valueIndex)
++      warned = true;
+     }
+-
+-    feature.tags = tags
+-    preparedLayer.features.push(feature)
++    return fn.apply(this, arguments);
+   }
+ 
+-  return preparedLayer
+-}
+-
+-function command (cmd, length) {
+-  return (length << 3) + (cmd & 0x7)
+-}
++  return deprecated;
++};
+ 
+-function zigzag (num) {
+-  return (num << 1) ^ (num >> 31)
+-}
+ 
+-/**
+- * Encode a polygon's geometry into an array ready to be serialized
+- * to mapbox vector tile specified geometry data.
+- *
+- * @param {Array} Rings, each being an array of [x, y] tile-space coordinates
+- * @return {Array} encoded geometry
+- */
+-function encodeGeometry (geometry) {
+-  var encoded = []
+-  var x = 0
+-  var y = 0
+-  var rings = geometry.length
+-  for (var r = 0; r < rings; r++) {
+-    var ring = geometry[r]
+-    encoded.push(command(1, 1)) // moveto
+-    for (var i = 0; i < ring.length; i++) {
+-      if (i === 1) {
+-        encoded.push(command(2, ring.length - 1)) // lineto
+-      }
+-      var dx = ring[i].x - x
+-      var dy = ring[i].y - y
+-      encoded.push(zigzag(dx), zigzag(dy))
+-      x += dx
+-      y += dy
++var debugs = {};
++var debugEnviron;
++exports.debuglog = function(set) {
++  if (isUndefined(debugEnviron))
++    debugEnviron = process.env.NODE_DEBUG || '';
++  set = set.toUpperCase();
++  if (!debugs[set]) {
++    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
++      var pid = process.pid;
++      debugs[set] = function() {
++        var msg = exports.format.apply(exports, arguments);
++        console.error('%s %d: %s', set, pid, msg);
++      };
++    } else {
++      debugs[set] = function() {};
+     }
+   }
++  return debugs[set];
++};
+ 
+-  return encoded
+-}
+ 
+ /**
+- * Wrap a property value according to its type. The returned object
+- * is of the form { xxxx_value: primitiveValue }, which is what the generated
+- * protobuf serializer expects.
++ * Echos the value of a value. Trys to print the value out
++ * in the best way possible given the different types.
++ *
++ * @param {Object} obj The object to print out.
++ * @param {Object} opts Optional options object that alters the output.
+  */
+-function wrapValue (value) {
+-  var result
+-  var type = typeof value
+-  if (type === 'string') {
+-    result = { string_value: value }
+-  } else if (type === 'boolean') {
+-    result = { bool_value: value }
+-  } else if (type === 'number') {
+-    if (value !== (value | 0)) {
+-      result = { float_value: value }
+-    } else if (value < 0) {
+-      result = { sint_value: value }
+-    } else {
+-      result = { uint_value: value }
+-    }
+-  } else {
+-    result = { string_value: '' + value }
++/* legacy: obj, showHidden, depth, colors*/
++function inspect(obj, opts) {
++  // default options
++  var ctx = {
++    seen: [],
++    stylize: stylizeNoColor
++  };
++  // legacy...
++  if (arguments.length >= 3) ctx.depth = arguments[2];
++  if (arguments.length >= 4) ctx.colors = arguments[3];
++  if (isBoolean(opts)) {
++    // legacy...
++    ctx.showHidden = opts;
++  } else if (opts) {
++    // got an "options" object
++    exports._extend(ctx, opts);
+   }
+-
+-  result.key = type + ':' + value
+-  return result
++  // set default options
++  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
++  if (isUndefined(ctx.depth)) ctx.depth = 2;
++  if (isUndefined(ctx.colors)) ctx.colors = false;
++  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
++  if (ctx.colors) ctx.stylize = stylizeWithColor;
++  return formatValue(ctx, obj, ctx.depth);
+ }
++exports.inspect = inspect;
+ 
+-},{"./lib/geojson_wrapper":188,"./vector-tile-pb":189,"pbf":172}],188:[function(require,module,exports){
+-'use strict'
+ 
+-var Point = require('point-geometry')
+-var VectorTileFeature = require('vector-tile').VectorTileFeature
++// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
++inspect.colors = {
++  'bold' : [1, 22],
++  'italic' : [3, 23],
++  'underline' : [4, 24],
++  'inverse' : [7, 27],
++  'white' : [37, 39],
++  'grey' : [90, 39],
++  'black' : [30, 39],
++  'blue' : [34, 39],
++  'cyan' : [36, 39],
++  'green' : [32, 39],
++  'magenta' : [35, 39],
++  'red' : [31, 39],
++  'yellow' : [33, 39]
++};
+ 
+-module.exports = GeoJSONWrapper
++// Don't use 'blue' not visible on cmd.exe
++inspect.styles = {
++  'special': 'cyan',
++  'number': 'yellow',
++  'boolean': 'yellow',
++  'undefined': 'grey',
++  'null': 'bold',
++  'string': 'green',
++  'date': 'magenta',
++  // "name": intentionally not styling
++  'regexp': 'red'
++};
+ 
+-// conform to vectortile api
+-function GeoJSONWrapper (features) {
+-  this.features = features
+-  this.length = features.length
+-}
+ 
+-GeoJSONWrapper.prototype.feature = function (i) {
+-  return new FeatureWrapper(this.features[i])
+-}
++function stylizeWithColor(str, styleType) {
++  var style = inspect.styles[styleType];
+ 
+-function FeatureWrapper (feature) {
+-  this.type = feature.type
+-  this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry
+-  this.properties = feature.tags
+-  this.extent = 4096
++  if (style) {
++    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
++           '\u001b[' + inspect.colors[style][1] + 'm';
++  } else {
++    return str;
++  }
+ }
+ 
+-FeatureWrapper.prototype.loadGeometry = function () {
+-  var rings = this.rawGeometry
+-  this.geometry = []
+ 
+-  for (var i = 0; i < rings.length; i++) {
+-    var ring = rings[i]
+-    var newRing = []
+-    for (var j = 0; j < ring.length; j++) {
+-      newRing.push(new Point(ring[j][0], ring[j][1]))
+-    }
+-    this.geometry.push(newRing)
+-  }
+-  return this.geometry
++function stylizeNoColor(str, styleType) {
++  return str;
+ }
+ 
+-FeatureWrapper.prototype.bbox = function () {
+-  if (!this.geometry) this.loadGeometry()
+-
+-  var rings = this.geometry
+-  var x1 = Infinity
+-  var x2 = -Infinity
+-  var y1 = Infinity
+-  var y2 = -Infinity
+ 
+-  for (var i = 0; i < rings.length; i++) {
+-    var ring = rings[i]
++function arrayToHash(array) {
++  var hash = {};
+ 
+-    for (var j = 0; j < ring.length; j++) {
+-      var coord = ring[j]
++  array.forEach(function(val, idx) {
++    hash[val] = true;
++  });
+ 
+-      x1 = Math.min(x1, coord.x)
+-      x2 = Math.max(x2, coord.x)
+-      y1 = Math.min(y1, coord.y)
+-      y2 = Math.max(y2, coord.y)
++  return hash;
++}
++
++
++function formatValue(ctx, value, recurseTimes) {
++  // Provide a hook for user-specified inspect functions.
++  // Check that value is an object with an inspect function on it
++  if (ctx.customInspect &&
++      value &&
++      isFunction(value.inspect) &&
++      // Filter out the util module, it's inspect function is special
++      value.inspect !== exports.inspect &&
++      // Also filter out any prototype objects using the circular check.
++      !(value.constructor && value.constructor.prototype === value)) {
++    var ret = value.inspect(recurseTimes, ctx);
++    if (!isString(ret)) {
++      ret = formatValue(ctx, ret, recurseTimes);
+     }
++    return ret;
+   }
+ 
+-  return [x1, y1, x2, y2]
+-}
++  // Primitive types cannot have properties
++  var primitive = formatPrimitive(ctx, value);
++  if (primitive) {
++    return primitive;
++  }
+ 
+-FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON
++  // Look up the keys of the object.
++  var keys = Object.keys(value);
++  var visibleKeys = arrayToHash(keys);
+ 
+-},{"point-geometry":174,"vector-tile":183}],189:[function(require,module,exports){
+-'use strict';
++  if (ctx.showHidden) {
++    keys = Object.getOwnPropertyNames(value);
++  }
+ 
+-// tile ========================================
++  // IE doesn't make error fields non-enumerable
++  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
++  if (isError(value)
++      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
++    return formatError(value);
++  }
+ 
+-var tile = exports.tile = {read: readTile, write: writeTile};
++  // Some type of object without properties can be shortcutted.
++  if (keys.length === 0) {
++    if (isFunction(value)) {
++      var name = value.name ? ': ' + value.name : '';
++      return ctx.stylize('[Function' + name + ']', 'special');
++    }
++    if (isRegExp(value)) {
++      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
++    }
++    if (isDate(value)) {
++      return ctx.stylize(Date.prototype.toString.call(value), 'date');
++    }
++    if (isError(value)) {
++      return formatError(value);
++    }
++  }
+ 
+-tile.GeomType = {
+-    "Unknown": 0,
+-    "Point": 1,
+-    "LineString": 2,
+-    "Polygon": 3
+-};
++  var base = '', array = false, braces = ['{', '}'];
+ 
+-function readTile(pbf, end) {
+-    return pbf.readFields(readTileField, {"layers": []}, end);
+-}
++  // Make Array say that they are Array
++  if (isArray(value)) {
++    array = true;
++    braces = ['[', ']'];
++  }
+ 
+-function readTileField(tag, tile, pbf) {
+-    if (tag === 3) tile.layers.push(readLayer(pbf, pbf.readVarint() + pbf.pos));
+-}
++  // Make functions say that they are functions
++  if (isFunction(value)) {
++    var n = value.name ? ': ' + value.name : '';
++    base = ' [Function' + n + ']';
++  }
+ 
+-function writeTile(tile, pbf) {
+-    var i;
+-    if (tile.layers !== undefined) for (i = 0; i < tile.layers.length; i++) pbf.writeMessage(3, writeLayer, tile.layers[i]);
+-}
++  // Make RegExps say that they are RegExps
++  if (isRegExp(value)) {
++    base = ' ' + RegExp.prototype.toString.call(value);
++  }
+ 
+-// value ========================================
++  // Make dates with properties first say the date
++  if (isDate(value)) {
++    base = ' ' + Date.prototype.toUTCString.call(value);
++  }
+ 
+-tile.value = {read: readValue, write: writeValue};
++  // Make error with message first say the error
++  if (isError(value)) {
++    base = ' ' + formatError(value);
++  }
+ 
+-function readValue(pbf, end) {
+-    return pbf.readFields(readValueField, {}, end);
+-}
++  if (keys.length === 0 && (!array || value.length == 0)) {
++    return braces[0] + base + braces[1];
++  }
+ 
+-function readValueField(tag, value, pbf) {
+-    if (tag === 1) value.string_value = pbf.readString();
+-    else if (tag === 2) value.float_value = pbf.readFloat();
+-    else if (tag === 3) value.double_value = pbf.readDouble();
+-    else if (tag === 4) value.int_value = pbf.readVarint();
+-    else if (tag === 5) value.uint_value = pbf.readVarint();
+-    else if (tag === 6) value.sint_value = pbf.readSVarint();
+-    else if (tag === 7) value.bool_value = pbf.readBoolean();
+-}
++  if (recurseTimes < 0) {
++    if (isRegExp(value)) {
++      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
++    } else {
++      return ctx.stylize('[Object]', 'special');
++    }
++  }
+ 
+-function writeValue(value, pbf) {
+-    if (value.string_value !== undefined) pbf.writeStringField(1, value.string_value);
+-    if (value.float_value !== undefined) pbf.writeFloatField(2, value.float_value);
+-    if (value.double_value !== undefined) pbf.writeDoubleField(3, value.double_value);
+-    if (value.int_value !== undefined) pbf.writeVarintField(4, value.int_value);
+-    if (value.uint_value !== undefined) pbf.writeVarintField(5, value.uint_value);
+-    if (value.sint_value !== undefined) pbf.writeSVarintField(6, value.sint_value);
+-    if (value.bool_value !== undefined) pbf.writeBooleanField(7, value.bool_value);
+-}
++  ctx.seen.push(value);
+ 
+-// feature ========================================
++  var output;
++  if (array) {
++    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
++  } else {
++    output = keys.map(function(key) {
++      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
++    });
++  }
+ 
+-tile.feature = {read: readFeature, write: writeFeature};
++  ctx.seen.pop();
+ 
+-function readFeature(pbf, end) {
+-    var feature = pbf.readFields(readFeatureField, {}, end);
+-    if (feature.type === undefined) feature.type = "Unknown";
+-    return feature;
++  return reduceToSingleString(output, base, braces);
+ }
+ 
+-function readFeatureField(tag, feature, pbf) {
+-    if (tag === 1) feature.id = pbf.readVarint();
+-    else if (tag === 2) feature.tags = pbf.readPackedVarint();
+-    else if (tag === 3) feature.type = pbf.readVarint();
+-    else if (tag === 4) feature.geometry = pbf.readPackedVarint();
+-}
+ 
+-function writeFeature(feature, pbf) {
+-    if (feature.id !== undefined) pbf.writeVarintField(1, feature.id);
+-    if (feature.tags !== undefined) pbf.writePackedVarint(2, feature.tags);
+-    if (feature.type !== undefined) pbf.writeVarintField(3, feature.type);
+-    if (feature.geometry !== undefined) pbf.writePackedVarint(4, feature.geometry);
++function formatPrimitive(ctx, value) {
++  if (isUndefined(value))
++    return ctx.stylize('undefined', 'undefined');
++  if (isString(value)) {
++    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
++                                             .replace(/'/g, "\\'")
++                                             .replace(/\\"/g, '"') + '\'';
++    return ctx.stylize(simple, 'string');
++  }
++  if (isNumber(value))
++    return ctx.stylize('' + value, 'number');
++  if (isBoolean(value))
++    return ctx.stylize('' + value, 'boolean');
++  // For some reason typeof null is "object", so special case here.
++  if (isNull(value))
++    return ctx.stylize('null', 'null');
+ }
+ 
+-// layer ========================================
+-
+-tile.layer = {read: readLayer, write: writeLayer};
+ 
+-function readLayer(pbf, end) {
+-    return pbf.readFields(readLayerField, {"features": [], "keys": [], "values": []}, end);
++function formatError(value) {
++  return '[' + Error.prototype.toString.call(value) + ']';
+ }
+ 
+-function readLayerField(tag, layer, pbf) {
+-    if (tag === 15) layer.version = pbf.readVarint();
+-    else if (tag === 1) layer.name = pbf.readString();
+-    else if (tag === 2) layer.features.push(readFeature(pbf, pbf.readVarint() + pbf.pos));
+-    else if (tag === 3) layer.keys.push(pbf.readString());
+-    else if (tag === 4) layer.values.push(readValue(pbf, pbf.readVarint() + pbf.pos));
+-    else if (tag === 5) layer.extent = pbf.readVarint();
+-}
+ 
+-function writeLayer(layer, pbf) {
+-    if (layer.version !== undefined) pbf.writeVarintField(15, layer.version);
+-    if (layer.name !== undefined) pbf.writeStringField(1, layer.name);
+-    var i;
+-    if (layer.features !== undefined) for (i = 0; i < layer.features.length; i++) pbf.writeMessage(2, writeFeature, layer.features[i]);
+-    if (layer.keys !== undefined) for (i = 0; i < layer.keys.length; i++) pbf.writeStringField(3, layer.keys[i]);
+-    if (layer.values !== undefined) for (i = 0; i < layer.values.length; i++) pbf.writeMessage(4, writeValue, layer.values[i]);
+-    if (layer.extent !== undefined) pbf.writeVarintField(5, layer.extent);
++function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
++  var output = [];
++  for (var i = 0, l = value.length; i < l; ++i) {
++    if (hasOwnProperty(value, String(i))) {
++      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
++          String(i), true));
++    } else {
++      output.push('');
++    }
++  }
++  keys.forEach(function(key) {
++    if (!key.match(/^\d+$/)) {
++      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
++          key, true));
++    }
++  });
++  return output;
+ }
+ 
+-},{}],190:[function(require,module,exports){
+-var bundleFn = arguments[3];
+-var sources = arguments[4];
+-var cache = arguments[5];
+-
+-var stringify = JSON.stringify;
+-
+-module.exports = function (fn, options) {
+-    var wkey;
+-    var cacheKeys = Object.keys(cache);
+ 
+-    for (var i = 0, l = cacheKeys.length; i < l; i++) {
+-        var key = cacheKeys[i];
+-        var exp = cache[key].exports;
+-        // Using babel as a transpiler to use esmodule, the export will always
+-        // be an object with the default export as a property of it. To ensure
+-        // the existing api and babel esmodule exports are both supported we
+-        // check for both
+-        if (exp === fn || exp && exp.default === fn) {
+-            wkey = key;
+-            break;
+-        }
++function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
++  var name, str, desc;
++  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
++  if (desc.get) {
++    if (desc.set) {
++      str = ctx.stylize('[Getter/Setter]', 'special');
++    } else {
++      str = ctx.stylize('[Getter]', 'special');
+     }
+-
+-    if (!wkey) {
+-        wkey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
+-        var wcache = {};
+-        for (var i = 0, l = cacheKeys.length; i < l; i++) {
+-            var key = cacheKeys[i];
+-            wcache[key] = key;
++  } else {
++    if (desc.set) {
++      str = ctx.stylize('[Setter]', 'special');
++    }
++  }
++  if (!hasOwnProperty(visibleKeys, key)) {
++    name = '[' + key + ']';
++  }
++  if (!str) {
++    if (ctx.seen.indexOf(desc.value) < 0) {
++      if (isNull(recurseTimes)) {
++        str = formatValue(ctx, desc.value, null);
++      } else {
++        str = formatValue(ctx, desc.value, recurseTimes - 1);
++      }
++      if (str.indexOf('\n') > -1) {
++        if (array) {
++          str = str.split('\n').map(function(line) {
++            return '  ' + line;
++          }).join('\n').substr(2);
++        } else {
++          str = '\n' + str.split('\n').map(function(line) {
++            return '   ' + line;
++          }).join('\n');
+         }
+-        sources[wkey] = [
+-            Function(['require','module','exports'], '(' + fn + ')(self)'),
+-            wcache
+-        ];
++      }
++    } else {
++      str = ctx.stylize('[Circular]', 'special');
+     }
+-    var skey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
+-
+-    var scache = {}; scache[wkey] = wkey;
+-    sources[skey] = [
+-        Function(['require'], (
+-            // try to call default if defined to also support babel esmodule
+-            // exports
+-            'var f = require(' + stringify(wkey) + ');' +
+-            '(f.default ? f.default : f)(self);'
+-        )),
+-        scache
+-    ];
+-
+-    var src = '(' + bundleFn + ')({'
+-        + Object.keys(sources).map(function (key) {
+-            return stringify(key) + ':['
+-                + sources[key][0]
+-                + ',' + stringify(sources[key][1]) + ']'
+-            ;
+-        }).join(',')
+-        + '},{},[' + stringify(skey) + '])'
+-    ;
+-
+-    var URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
+-
+-    var blob = new Blob([src], { type: 'text/javascript' });
+-    if (options && options.bare) { return blob; }
+-    var workerUrl = URL.createObjectURL(blob);
+-    var worker = new Worker(workerUrl);
+-    if (typeof URL.revokeObjectURL == "function") {
+-      URL.revokeObjectURL(workerUrl);
++  }
++  if (isUndefined(name)) {
++    if (array && key.match(/^\d+$/)) {
++      return str;
+     }
+-    return worker;
+-};
+-
+-},{}],191:[function(require,module,exports){
+-// TinyColor v1.3.0
+-// https://github.com/bgrins/TinyColor
+-// Brian Grinstead, MIT License
+-
+-(function() {
++    name = JSON.stringify('' + key);
++    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
++      name = name.substr(1, name.length - 2);
++      name = ctx.stylize(name, 'name');
++    } else {
++      name = name.replace(/'/g, "\\'")
++                 .replace(/\\"/g, '"')
++                 .replace(/(^"|"$)/g, "'");
++      name = ctx.stylize(name, 'string');
++    }
++  }
+ 
+-var trimLeft = /^\s+/,
+-    trimRight = /\s+$/,
+-    tinyCounter = 0,
+-    math = Math,
+-    mathRound = math.round,
+-    mathMin = math.min,
+-    mathMax = math.max,
+-    mathRandom = math.random;
++  return name + ': ' + str;
++}
+ 
+-function tinycolor (color, opts) {
+ 
+-    color = (color) ? color : '';
+-    opts = opts || { };
++function reduceToSingleString(output, base, braces) {
++  var numLinesEst = 0;
++  var length = output.reduce(function(prev, cur) {
++    numLinesEst++;
++    if (cur.indexOf('\n') >= 0) numLinesEst++;
++    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
++  }, 0);
+ 
+-    // If input is already a tinycolor, return itself
+-    if (color instanceof tinycolor) {
+-       return color;
+-    }
+-    // If we are called as a function, call using new instead
+-    if (!(this instanceof tinycolor)) {
+-        return new tinycolor(color, opts);
+-    }
++  if (length > 60) {
++    return braces[0] +
++           (base === '' ? '' : base + '\n ') +
++           ' ' +
++           output.join(',\n  ') +
++           ' ' +
++           braces[1];
++  }
+ 
+-    var rgb = inputToRGB(color);
+-    this._originalInput = color,
+-    this._r = rgb.r,
+-    this._g = rgb.g,
+-    this._b = rgb.b,
+-    this._a = rgb.a,
+-    this._roundA = mathRound(100*this._a) / 100,
+-    this._format = opts.format || rgb.format;
+-    this._gradientType = opts.gradientType;
++  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
++}
+ 
+-    // Don't let the range of [0,255] come back in [0,1].
+-    // Potentially lose a little bit of precision here, but will fix issues where
+-    // .5 gets interpreted as half of the total, instead of half of 1
+-    // If it was supposed to be 128, this was already taken care of by `inputToRgb`
+-    if (this._r < 1) { this._r = mathRound(this._r); }
+-    if (this._g < 1) { this._g = mathRound(this._g); }
+-    if (this._b < 1) { this._b = mathRound(this._b); }
+ 
+-    this._ok = rgb.ok;
+-    this._tc_id = tinyCounter++;
++// NOTE: These type checking functions intentionally don't use `instanceof`
++// because it is fragile and can be easily faked with `Object.create()`.
++function isArray(ar) {
++  return Array.isArray(ar);
+ }
++exports.isArray = isArray;
+ 
+-tinycolor.prototype = {
+-    isDark: function() {
+-        return this.getBrightness() < 128;
+-    },
+-    isLight: function() {
+-        return !this.isDark();
+-    },
+-    isValid: function() {
+-        return this._ok;
+-    },
+-    getOriginalInput: function() {
+-      return this._originalInput;
+-    },
+-    getFormat: function() {
+-        return this._format;
+-    },
+-    getAlpha: function() {
+-        return this._a;
+-    },
+-    getBrightness: function() {
+-        //http://www.w3.org/TR/AERT#color-contrast
+-        var rgb = this.toRgb();
+-        return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
+-    },
+-    getLuminance: function() {
+-        //http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
+-        var rgb = this.toRgb();
+-        var RsRGB, GsRGB, BsRGB, R, G, B;
+-        RsRGB = rgb.r/255;
+-        GsRGB = rgb.g/255;
+-        BsRGB = rgb.b/255;
++function isBoolean(arg) {
++  return typeof arg === 'boolean';
++}
++exports.isBoolean = isBoolean;
+ 
+-        if (RsRGB <= 0.03928) {R = RsRGB / 12.92;} else {R = Math.pow(((RsRGB + 0.055) / 1.055), 2.4);}
+-        if (GsRGB <= 0.03928) {G = GsRGB / 12.92;} else {G = Math.pow(((GsRGB + 0.055) / 1.055), 2.4);}
+-        if (BsRGB <= 0.03928) {B = BsRGB / 12.92;} else {B = Math.pow(((BsRGB + 0.055) / 1.055), 2.4);}
+-        return (0.2126 * R) + (0.7152 * G) + (0.0722 * B);
+-    },
+-    setAlpha: function(value) {
+-        this._a = boundAlpha(value);
+-        this._roundA = mathRound(100*this._a) / 100;
+-        return this;
+-    },
+-    toHsv: function() {
+-        var hsv = rgbToHsv(this._r, this._g, this._b);
+-        return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: this._a };
+-    },
+-    toHsvString: function() {
+-        var hsv = rgbToHsv(this._r, this._g, this._b);
+-        var h = mathRound(hsv.h * 360), s = mathRound(hsv.s * 100), v = mathRound(hsv.v * 100);
+-        return (this._a == 1) ?
+-          "hsv("  + h + ", " + s + "%, " + v + "%)" :
+-          "hsva(" + h + ", " + s + "%, " + v + "%, "+ this._roundA + ")";
+-    },
+-    toHsl: function() {
+-        var hsl = rgbToHsl(this._r, this._g, this._b);
+-        return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: this._a };
+-    },
+-    toHslString: function() {
+-        var hsl = rgbToHsl(this._r, this._g, this._b);
+-        var h = mathRound(hsl.h * 360), s = mathRound(hsl.s * 100), l = mathRound(hsl.l * 100);
+-        return (this._a == 1) ?
+-          "hsl("  + h + ", " + s + "%, " + l + "%)" :
+-          "hsla(" + h + ", " + s + "%, " + l + "%, "+ this._roundA + ")";
+-    },
+-    toHex: function(allow3Char) {
+-        return rgbToHex(this._r, this._g, this._b, allow3Char);
+-    },
+-    toHexString: function(allow3Char) {
+-        return '#' + this.toHex(allow3Char);
+-    },
+-    toHex8: function() {
+-        return rgbaToHex(this._r, this._g, this._b, this._a);
+-    },
+-    toHex8String: function() {
+-        return '#' + this.toHex8();
+-    },
+-    toRgb: function() {
+-        return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
+-    },
+-    toRgbString: function() {
+-        return (this._a == 1) ?
+-          "rgb("  + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ")" :
+-          "rgba(" + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ", " + this._roundA + ")";
+-    },
+-    toPercentageRgb: function() {
+-        return { r: mathRound(bound01(this._r, 255) * 100) + "%", g: mathRound(bound01(this._g, 255) * 100) + "%", b: mathRound(bound01(this._b, 255) * 100) + "%", a: this._a };
+-    },
+-    toPercentageRgbString: function() {
+-        return (this._a == 1) ?
+-          "rgb("  + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%)" :
+-          "rgba(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%, " + this._roundA + ")";
+-    },
+-    toName: function() {
+-        if (this._a === 0) {
+-            return "transparent";
+-        }
++function isNull(arg) {
++  return arg === null;
++}
++exports.isNull = isNull;
+ 
+-        if (this._a < 1) {
+-            return false;
+-        }
++function isNullOrUndefined(arg) {
++  return arg == null;
++}
++exports.isNullOrUndefined = isNullOrUndefined;
+ 
+-        return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
+-    },
+-    toFilter: function(secondColor) {
+-        var hex8String = '#' + rgbaToHex(this._r, this._g, this._b, this._a);
+-        var secondHex8String = hex8String;
+-        var gradientType = this._gradientType ? "GradientType = 1, " : "";
++function isNumber(arg) {
++  return typeof arg === 'number';
++}
++exports.isNumber = isNumber;
+ 
+-        if (secondColor) {
+-            var s = tinycolor(secondColor);
+-            secondHex8String = s.toHex8String();
+-        }
++function isString(arg) {
++  return typeof arg === 'string';
++}
++exports.isString = isString;
+ 
+-        return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
+-    },
+-    toString: function(format) {
+-        var formatSet = !!format;
+-        format = format || this._format;
++function isSymbol(arg) {
++  return typeof arg === 'symbol';
++}
++exports.isSymbol = isSymbol;
+ 
+-        var formattedString = false;
+-        var hasAlpha = this._a < 1 && this._a >= 0;
+-        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "name");
++function isUndefined(arg) {
++  return arg === void 0;
++}
++exports.isUndefined = isUndefined;
+ 
+-        if (needsAlphaFormat) {
+-            // Special case for "transparent", all other non-alpha formats
+-            // will return rgba when there is transparency.
+-            if (format === "name" && this._a === 0) {
+-                return this.toName();
+-            }
+-            return this.toRgbString();
+-        }
+-        if (format === "rgb") {
+-            formattedString = this.toRgbString();
+-        }
+-        if (format === "prgb") {
+-            formattedString = this.toPercentageRgbString();
+-        }
+-        if (format === "hex" || format === "hex6") {
+-            formattedString = this.toHexString();
+-        }
+-        if (format === "hex3") {
+-            formattedString = this.toHexString(true);
+-        }
+-        if (format === "hex8") {
+-            formattedString = this.toHex8String();
+-        }
+-        if (format === "name") {
+-            formattedString = this.toName();
+-        }
+-        if (format === "hsl") {
+-            formattedString = this.toHslString();
+-        }
+-        if (format === "hsv") {
+-            formattedString = this.toHsvString();
+-        }
++function isRegExp(re) {
++  return isObject(re) && objectToString(re) === '[object RegExp]';
++}
++exports.isRegExp = isRegExp;
+ 
+-        return formattedString || this.toHexString();
+-    },
+-    clone: function() {
+-        return tinycolor(this.toString());
+-    },
++function isObject(arg) {
++  return typeof arg === 'object' && arg !== null;
++}
++exports.isObject = isObject;
+ 
+-    _applyModification: function(fn, args) {
+-        var color = fn.apply(null, [this].concat([].slice.call(args)));
+-        this._r = color._r;
+-        this._g = color._g;
+-        this._b = color._b;
+-        this.setAlpha(color._a);
+-        return this;
+-    },
+-    lighten: function() {
+-        return this._applyModification(lighten, arguments);
+-    },
+-    brighten: function() {
+-        return this._applyModification(brighten, arguments);
+-    },
+-    darken: function() {
+-        return this._applyModification(darken, arguments);
+-    },
+-    desaturate: function() {
+-        return this._applyModification(desaturate, arguments);
+-    },
+-    saturate: function() {
+-        return this._applyModification(saturate, arguments);
+-    },
+-    greyscale: function() {
+-        return this._applyModification(greyscale, arguments);
+-    },
+-    spin: function() {
+-        return this._applyModification(spin, arguments);
+-    },
++function isDate(d) {
++  return isObject(d) && objectToString(d) === '[object Date]';
++}
++exports.isDate = isDate;
+ 
+-    _applyCombination: function(fn, args) {
+-        return fn.apply(null, [this].concat([].slice.call(args)));
+-    },
+-    analogous: function() {
+-        return this._applyCombination(analogous, arguments);
+-    },
+-    complement: function() {
+-        return this._applyCombination(complement, arguments);
+-    },
+-    monochromatic: function() {
+-        return this._applyCombination(monochromatic, arguments);
+-    },
+-    splitcomplement: function() {
+-        return this._applyCombination(splitcomplement, arguments);
+-    },
+-    triad: function() {
+-        return this._applyCombination(triad, arguments);
+-    },
+-    tetrad: function() {
+-        return this._applyCombination(tetrad, arguments);
+-    }
+-};
++function isError(e) {
++  return isObject(e) &&
++      (objectToString(e) === '[object Error]' || e instanceof Error);
++}
++exports.isError = isError;
+ 
+-// If input is an object, force 1 into "1.0" to handle ratios properly
+-// String input requires "1.0" as input, so 1 will be treated as 1
+-tinycolor.fromRatio = function(color, opts) {
+-    if (typeof color == "object") {
+-        var newColor = {};
+-        for (var i in color) {
+-            if (color.hasOwnProperty(i)) {
+-                if (i === "a") {
+-                    newColor[i] = color[i];
+-                }
+-                else {
+-                    newColor[i] = convertToPercentage(color[i]);
+-                }
+-            }
+-        }
+-        color = newColor;
+-    }
++function isFunction(arg) {
++  return typeof arg === 'function';
++}
++exports.isFunction = isFunction;
+ 
+-    return tinycolor(color, opts);
+-};
++function isPrimitive(arg) {
++  return arg === null ||
++         typeof arg === 'boolean' ||
++         typeof arg === 'number' ||
++         typeof arg === 'string' ||
++         typeof arg === 'symbol' ||  // ES6 symbol
++         typeof arg === 'undefined';
++}
++exports.isPrimitive = isPrimitive;
+ 
+-// Given a string or object, convert that input to RGB
+-// Possible string inputs:
+-//
+-//     "red"
+-//     "#f00" or "f00"
+-//     "#ff0000" or "ff0000"
+-//     "#ff000000" or "ff000000"
+-//     "rgb 255 0 0" or "rgb (255, 0, 0)"
+-//     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
+-//     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
+-//     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
+-//     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
+-//     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
+-//     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
+-//
+-function inputToRGB(color) {
++exports.isBuffer = require('./support/isBuffer');
+ 
+-    var rgb = { r: 0, g: 0, b: 0 };
+-    var a = 1;
+-    var ok = false;
+-    var format = false;
++function objectToString(o) {
++  return Object.prototype.toString.call(o);
++}
+ 
+-    if (typeof color == "string") {
+-        color = stringInputToObject(color);
+-    }
+ 
+-    if (typeof color == "object") {
+-        if (color.hasOwnProperty("r") && color.hasOwnProperty("g") && color.hasOwnProperty("b")) {
+-            rgb = rgbToRgb(color.r, color.g, color.b);
+-            ok = true;
+-            format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
+-        }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("v")) {
+-            color.s = convertToPercentage(color.s);
+-            color.v = convertToPercentage(color.v);
+-            rgb = hsvToRgb(color.h, color.s, color.v);
+-            ok = true;
+-            format = "hsv";
+-        }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("l")) {
+-            color.s = convertToPercentage(color.s);
+-            color.l = convertToPercentage(color.l);
+-            rgb = hslToRgb(color.h, color.s, color.l);
+-            ok = true;
+-            format = "hsl";
+-        }
++function pad(n) {
++  return n < 10 ? '0' + n.toString(10) : n.toString(10);
++}
+ 
+-        if (color.hasOwnProperty("a")) {
+-            a = color.a;
+-        }
+-    }
+ 
+-    a = boundAlpha(a);
++var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
++              'Oct', 'Nov', 'Dec'];
+ 
+-    return {
+-        ok: ok,
+-        format: color.format || format,
+-        r: mathMin(255, mathMax(rgb.r, 0)),
+-        g: mathMin(255, mathMax(rgb.g, 0)),
+-        b: mathMin(255, mathMax(rgb.b, 0)),
+-        a: a
+-    };
++// 26 Feb 16:19:34
++function timestamp() {
++  var d = new Date();
++  var time = [pad(d.getHours()),
++              pad(d.getMinutes()),
++              pad(d.getSeconds())].join(':');
++  return [d.getDate(), months[d.getMonth()], time].join(' ');
+ }
+ 
+ 
+-// Conversion Functions
+-// --------------------
++// log is just a thin wrapper to console.log that prepends a timestamp
++exports.log = function() {
++  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
++};
+ 
+-// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
+-// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>
+ 
+-// `rgbToRgb`
+-// Handle bounds / percentage checking to conform to CSS color spec
+-// <http://www.w3.org/TR/css3-color/>
+-// *Assumes:* r, g, b in [0, 255] or [0, 1]
+-// *Returns:* { r, g, b } in [0, 255]
+-function rgbToRgb(r, g, b){
+-    return {
+-        r: bound01(r, 255) * 255,
+-        g: bound01(g, 255) * 255,
+-        b: bound01(b, 255) * 255
+-    };
++/**
++ * Inherit the prototype methods from one constructor into another.
++ *
++ * The Function.prototype.inherits from lang.js rewritten as a standalone
++ * function (not on Function.prototype). NOTE: If this file is to be loaded
++ * during bootstrapping this function needs to be rewritten using some native
++ * functions as prototype setup using normal JavaScript does not work as
++ * expected during bootstrapping (see mirror.js in r114903).
++ *
++ * @param {function} ctor Constructor function which needs to inherit the
++ *     prototype.
++ * @param {function} superCtor Constructor function to inherit prototype from.
++ */
++exports.inherits = require('inherits');
++
++exports._extend = function(origin, add) {
++  // Don't do anything if add isn't an object
++  if (!add || !isObject(add)) return origin;
++
++  var keys = Object.keys(add);
++  var i = keys.length;
++  while (i--) {
++    origin[keys[i]] = add[keys[i]];
++  }
++  return origin;
++};
++
++function hasOwnProperty(obj, prop) {
++  return Object.prototype.hasOwnProperty.call(obj, prop);
+ }
+ 
+-// `rgbToHsl`
+-// Converts an RGB color value to HSL.
+-// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
+-// *Returns:* { h, s, l } in [0,1]
+-function rgbToHsl(r, g, b) {
++}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"./support/isBuffer":182,"_process":175,"inherits":181}],184:[function(require,module,exports){
++module.exports.VectorTile = require('./lib/vectortile.js');
++module.exports.VectorTileFeature = require('./lib/vectortilefeature.js');
++module.exports.VectorTileLayer = require('./lib/vectortilelayer.js');
+ 
+-    r = bound01(r, 255);
+-    g = bound01(g, 255);
+-    b = bound01(b, 255);
++},{"./lib/vectortile.js":185,"./lib/vectortilefeature.js":186,"./lib/vectortilelayer.js":187}],185:[function(require,module,exports){
++'use strict';
+ 
+-    var max = mathMax(r, g, b), min = mathMin(r, g, b);
+-    var h, s, l = (max + min) / 2;
++var VectorTileLayer = require('./vectortilelayer');
+ 
+-    if(max == min) {
+-        h = s = 0; // achromatic
+-    }
+-    else {
+-        var d = max - min;
+-        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
+-        switch(max) {
+-            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+-            case g: h = (b - r) / d + 2; break;
+-            case b: h = (r - g) / d + 4; break;
+-        }
++module.exports = VectorTile;
+ 
+-        h /= 6;
+-    }
++function VectorTile(pbf, end) {
++    this.layers = pbf.readFields(readTile, {}, end);
++}
+ 
+-    return { h: h, s: s, l: l };
++function readTile(tag, layers, pbf) {
++    if (tag === 3) {
++        var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);
++        if (layer.length) layers[layer.name] = layer;
++    }
+ }
+ 
+-// `hslToRgb`
+-// Converts an HSL color value to RGB.
+-// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
+-// *Returns:* { r, g, b } in the set [0, 255]
+-function hslToRgb(h, s, l) {
+-    var r, g, b;
+ 
+-    h = bound01(h, 360);
+-    s = bound01(s, 100);
+-    l = bound01(l, 100);
++},{"./vectortilelayer":187}],186:[function(require,module,exports){
++'use strict';
+ 
+-    function hue2rgb(p, q, t) {
+-        if(t < 0) t += 1;
+-        if(t > 1) t -= 1;
+-        if(t < 1/6) return p + (q - p) * 6 * t;
+-        if(t < 1/2) return q;
+-        if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
+-        return p;
+-    }
++var Point = require('point-geometry');
+ 
+-    if(s === 0) {
+-        r = g = b = l; // achromatic
+-    }
+-    else {
+-        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
+-        var p = 2 * l - q;
+-        r = hue2rgb(p, q, h + 1/3);
+-        g = hue2rgb(p, q, h);
+-        b = hue2rgb(p, q, h - 1/3);
+-    }
++module.exports = VectorTileFeature;
+ 
+-    return { r: r * 255, g: g * 255, b: b * 255 };
+-}
++function VectorTileFeature(pbf, end, extent, keys, values) {
++    // Public
++    this.properties = {};
++    this.extent = extent;
++    this.type = 0;
+ 
+-// `rgbToHsv`
+-// Converts an RGB color value to HSV
+-// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
+-// *Returns:* { h, s, v } in [0,1]
+-function rgbToHsv(r, g, b) {
++    // Private
++    this._pbf = pbf;
++    this._geometry = -1;
++    this._keys = keys;
++    this._values = values;
+ 
+-    r = bound01(r, 255);
+-    g = bound01(g, 255);
+-    b = bound01(b, 255);
++    pbf.readFields(readFeature, this, end);
++}
+ 
+-    var max = mathMax(r, g, b), min = mathMin(r, g, b);
+-    var h, s, v = max;
++function readFeature(tag, feature, pbf) {
++    if (tag == 1) feature.id = pbf.readVarint();
++    else if (tag == 2) readTag(pbf, feature);
++    else if (tag == 3) feature.type = pbf.readVarint();
++    else if (tag == 4) feature._geometry = pbf.pos;
++}
+ 
+-    var d = max - min;
+-    s = max === 0 ? 0 : d / max;
++function readTag(pbf, feature) {
++    var end = pbf.readVarint() + pbf.pos;
+ 
+-    if(max == min) {
+-        h = 0; // achromatic
+-    }
+-    else {
+-        switch(max) {
+-            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+-            case g: h = (b - r) / d + 2; break;
+-            case b: h = (r - g) / d + 4; break;
+-        }
+-        h /= 6;
++    while (pbf.pos < end) {
++        var key = feature._keys[pbf.readVarint()],
++            value = feature._values[pbf.readVarint()];
++        feature.properties[key] = value;
+     }
+-    return { h: h, s: s, v: v };
+ }
+ 
+-// `hsvToRgb`
+-// Converts an HSV color value to RGB.
+-// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
+-// *Returns:* { r, g, b } in the set [0, 255]
+- function hsvToRgb(h, s, v) {
++VectorTileFeature.types = ['Unknown', 'Point', 'LineString', 'Polygon'];
+ 
+-    h = bound01(h, 360) * 6;
+-    s = bound01(s, 100);
+-    v = bound01(v, 100);
++VectorTileFeature.prototype.loadGeometry = function() {
++    var pbf = this._pbf;
++    pbf.pos = this._geometry;
+ 
+-    var i = math.floor(h),
+-        f = h - i,
+-        p = v * (1 - s),
+-        q = v * (1 - f * s),
+-        t = v * (1 - (1 - f) * s),
+-        mod = i % 6,
+-        r = [v, q, p, p, t, v][mod],
+-        g = [t, v, v, q, p, p][mod],
+-        b = [p, p, t, v, v, q][mod];
++    var end = pbf.readVarint() + pbf.pos,
++        cmd = 1,
++        length = 0,
++        x = 0,
++        y = 0,
++        lines = [],
++        line;
+ 
+-    return { r: r * 255, g: g * 255, b: b * 255 };
+-}
++    while (pbf.pos < end) {
++        if (!length) {
++            var cmdLen = pbf.readVarint();
++            cmd = cmdLen & 0x7;
++            length = cmdLen >> 3;
++        }
+ 
+-// `rgbToHex`
+-// Converts an RGB color to hex
+-// Assumes r, g, and b are contained in the set [0, 255]
+-// Returns a 3 or 6 character hex
+-function rgbToHex(r, g, b, allow3Char) {
++        length--;
+ 
+-    var hex = [
+-        pad2(mathRound(r).toString(16)),
+-        pad2(mathRound(g).toString(16)),
+-        pad2(mathRound(b).toString(16))
+-    ];
++        if (cmd === 1 || cmd === 2) {
++            x += pbf.readSVarint();
++            y += pbf.readSVarint();
+ 
+-    // Return a 3 character hex if possible
+-    if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
+-        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
+-    }
++            if (cmd === 1) { // moveTo
++                if (line) lines.push(line);
++                line = [];
++            }
+ 
+-    return hex.join("");
+-}
++            line.push(new Point(x, y));
+ 
+-// `rgbaToHex`
+-// Converts an RGBA color plus alpha transparency to hex
+-// Assumes r, g, b and a are contained in the set [0, 255]
+-// Returns an 8 character hex
+-function rgbaToHex(r, g, b, a) {
++        } else if (cmd === 7) {
+ 
+-    var hex = [
+-        pad2(convertDecimalToHex(a)),
+-        pad2(mathRound(r).toString(16)),
+-        pad2(mathRound(g).toString(16)),
+-        pad2(mathRound(b).toString(16))
+-    ];
++            // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90
++            if (line) {
++                line.push(line[0].clone()); // closePolygon
++            }
+ 
+-    return hex.join("");
+-}
++        } else {
++            throw new Error('unknown command ' + cmd);
++        }
++    }
+ 
+-// `equals`
+-// Can be called with any tinycolor input
+-tinycolor.equals = function (color1, color2) {
+-    if (!color1 || !color2) { return false; }
+-    return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
+-};
++    if (line) lines.push(line);
+ 
+-tinycolor.random = function() {
+-    return tinycolor.fromRatio({
+-        r: mathRandom(),
+-        g: mathRandom(),
+-        b: mathRandom()
+-    });
++    return lines;
+ };
+ 
++VectorTileFeature.prototype.bbox = function() {
++    var pbf = this._pbf;
++    pbf.pos = this._geometry;
++
++    var end = pbf.readVarint() + pbf.pos,
++        cmd = 1,
++        length = 0,
++        x = 0,
++        y = 0,
++        x1 = Infinity,
++        x2 = -Infinity,
++        y1 = Infinity,
++        y2 = -Infinity;
++
++    while (pbf.pos < end) {
++        if (!length) {
++            var cmdLen = pbf.readVarint();
++            cmd = cmdLen & 0x7;
++            length = cmdLen >> 3;
++        }
++
++        length--;
++
++        if (cmd === 1 || cmd === 2) {
++            x += pbf.readSVarint();
++            y += pbf.readSVarint();
++            if (x < x1) x1 = x;
++            if (x > x2) x2 = x;
++            if (y < y1) y1 = y;
++            if (y > y2) y2 = y;
++
++        } else if (cmd !== 7) {
++            throw new Error('unknown command ' + cmd);
++        }
++    }
+ 
+-// Modification Functions
+-// ----------------------
+-// Thanks to less.js for some of the basics here
+-// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>
++    return [x1, y1, x2, y2];
++};
+ 
+-function desaturate(color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.s -= amount / 100;
+-    hsl.s = clamp01(hsl.s);
+-    return tinycolor(hsl);
+-}
++VectorTileFeature.prototype.toGeoJSON = function(x, y, z) {
++    var size = this.extent * Math.pow(2, z),
++        x0 = this.extent * x,
++        y0 = this.extent * y,
++        coords = this.loadGeometry(),
++        type = VectorTileFeature.types[this.type],
++        i, j;
+ 
+-function saturate(color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.s += amount / 100;
+-    hsl.s = clamp01(hsl.s);
+-    return tinycolor(hsl);
+-}
++    function project(line) {
++        for (var j = 0; j < line.length; j++) {
++            var p = line[j], y2 = 180 - (p.y + y0) * 360 / size;
++            line[j] = [
++                (p.x + x0) * 360 / size - 180,
++                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
++            ];
++        }
++    }
+ 
+-function greyscale(color) {
+-    return tinycolor(color).desaturate(100);
+-}
++    switch (this.type) {
++    case 1:
++        var points = [];
++        for (i = 0; i < coords.length; i++) {
++            points[i] = coords[i][0];
++        }
++        coords = points;
++        project(coords);
++        break;
+ 
+-function lighten (color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.l += amount / 100;
+-    hsl.l = clamp01(hsl.l);
+-    return tinycolor(hsl);
+-}
++    case 2:
++        for (i = 0; i < coords.length; i++) {
++            project(coords[i]);
++        }
++        break;
+ 
+-function brighten(color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var rgb = tinycolor(color).toRgb();
+-    rgb.r = mathMax(0, mathMin(255, rgb.r - mathRound(255 * - (amount / 100))));
+-    rgb.g = mathMax(0, mathMin(255, rgb.g - mathRound(255 * - (amount / 100))));
+-    rgb.b = mathMax(0, mathMin(255, rgb.b - mathRound(255 * - (amount / 100))));
+-    return tinycolor(rgb);
+-}
++    case 3:
++        coords = classifyRings(coords);
++        for (i = 0; i < coords.length; i++) {
++            for (j = 0; j < coords[i].length; j++) {
++                project(coords[i][j]);
++            }
++        }
++        break;
++    }
+ 
+-function darken (color, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 10);
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.l -= amount / 100;
+-    hsl.l = clamp01(hsl.l);
+-    return tinycolor(hsl);
+-}
++    if (coords.length === 1) {
++        coords = coords[0];
++    } else {
++        type = 'Multi' + type;
++    }
+ 
+-// Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
+-// Values outside of this range will be wrapped into this range.
+-function spin(color, amount) {
+-    var hsl = tinycolor(color).toHsl();
+-    var hue = (mathRound(hsl.h) + amount) % 360;
+-    hsl.h = hue < 0 ? 360 + hue : hue;
+-    return tinycolor(hsl);
+-}
++    var result = {
++        type: "Feature",
++        geometry: {
++            type: type,
++            coordinates: coords
++        },
++        properties: this.properties
++    };
+ 
+-// Combination Functions
+-// ---------------------
+-// Thanks to jQuery xColor for some of the ideas behind these
+-// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>
++    if ('id' in this) {
++        result.id = this.id;
++    }
+ 
+-function complement(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    hsl.h = (hsl.h + 180) % 360;
+-    return tinycolor(hsl);
+-}
++    return result;
++};
+ 
+-function triad(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    var h = hsl.h;
+-    return [
+-        tinycolor(color),
+-        tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
+-        tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
+-    ];
+-}
++// classifies an array of rings into polygons with outer rings and holes
+ 
+-function tetrad(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    var h = hsl.h;
+-    return [
+-        tinycolor(color),
+-        tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
+-        tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
+-        tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
+-    ];
+-}
++function classifyRings(rings) {
++    var len = rings.length;
+ 
+-function splitcomplement(color) {
+-    var hsl = tinycolor(color).toHsl();
+-    var h = hsl.h;
+-    return [
+-        tinycolor(color),
+-        tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l}),
+-        tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l})
+-    ];
+-}
++    if (len <= 1) return [rings];
+ 
+-function analogous(color, results, slices) {
+-    results = results || 6;
+-    slices = slices || 30;
++    var polygons = [],
++        polygon,
++        ccw;
+ 
+-    var hsl = tinycolor(color).toHsl();
+-    var part = 360 / slices;
+-    var ret = [tinycolor(color)];
++    for (var i = 0; i < len; i++) {
++        var area = signedArea(rings[i]);
++        if (area === 0) continue;
+ 
+-    for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results; ) {
+-        hsl.h = (hsl.h + part) % 360;
+-        ret.push(tinycolor(hsl));
+-    }
+-    return ret;
+-}
++        if (ccw === undefined) ccw = area < 0;
+ 
+-function monochromatic(color, results) {
+-    results = results || 6;
+-    var hsv = tinycolor(color).toHsv();
+-    var h = hsv.h, s = hsv.s, v = hsv.v;
+-    var ret = [];
+-    var modification = 1 / results;
++        if (ccw === area < 0) {
++            if (polygon) polygons.push(polygon);
++            polygon = [rings[i]];
+ 
+-    while (results--) {
+-        ret.push(tinycolor({ h: h, s: s, v: v}));
+-        v = (v + modification) % 1;
++        } else {
++            polygon.push(rings[i]);
++        }
+     }
++    if (polygon) polygons.push(polygon);
+ 
+-    return ret;
++    return polygons;
+ }
+ 
+-// Utility Functions
+-// ---------------------
+-
+-tinycolor.mix = function(color1, color2, amount) {
+-    amount = (amount === 0) ? 0 : (amount || 50);
+-
+-    var rgb1 = tinycolor(color1).toRgb();
+-    var rgb2 = tinycolor(color2).toRgb();
++function signedArea(ring) {
++    var sum = 0;
++    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
++        p1 = ring[i];
++        p2 = ring[j];
++        sum += (p2.x - p1.x) * (p1.y + p2.y);
++    }
++    return sum;
++}
+ 
+-    var p = amount / 100;
+-    var w = p * 2 - 1;
+-    var a = rgb2.a - rgb1.a;
++},{"point-geometry":174}],187:[function(require,module,exports){
++'use strict';
+ 
+-    var w1;
++var VectorTileFeature = require('./vectortilefeature.js');
+ 
+-    if (w * a == -1) {
+-        w1 = w;
+-    } else {
+-        w1 = (w + a) / (1 + w * a);
+-    }
++module.exports = VectorTileLayer;
+ 
+-    w1 = (w1 + 1) / 2;
++function VectorTileLayer(pbf, end) {
++    // Public
++    this.version = 1;
++    this.name = null;
++    this.extent = 4096;
++    this.length = 0;
+ 
+-    var w2 = 1 - w1;
++    // Private
++    this._pbf = pbf;
++    this._keys = [];
++    this._values = [];
++    this._features = [];
+ 
+-    var rgba = {
+-        r: rgb2.r * w1 + rgb1.r * w2,
+-        g: rgb2.g * w1 + rgb1.g * w2,
+-        b: rgb2.b * w1 + rgb1.b * w2,
+-        a: rgb2.a * p  + rgb1.a * (1 - p)
+-    };
++    pbf.readFields(readLayer, this, end);
+ 
+-    return tinycolor(rgba);
+-};
++    this.length = this._features.length;
++}
+ 
++function readLayer(tag, layer, pbf) {
++    if (tag === 15) layer.version = pbf.readVarint();
++    else if (tag === 1) layer.name = pbf.readString();
++    else if (tag === 5) layer.extent = pbf.readVarint();
++    else if (tag === 2) layer._features.push(pbf.pos);
++    else if (tag === 3) layer._keys.push(pbf.readString());
++    else if (tag === 4) layer._values.push(readValueMessage(pbf));
++}
+ 
+-// Readability Functions
+-// ---------------------
+-// <http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef (WCAG Version 2)
++function readValueMessage(pbf) {
++    var value = null,
++        end = pbf.readVarint() + pbf.pos;
+ 
+-// `contrast`
+-// Analyze the 2 colors and returns the color contrast defined by (WCAG Version 2)
+-tinycolor.readability = function(color1, color2) {
+-    var c1 = tinycolor(color1);
+-    var c2 = tinycolor(color2);
+-    return (Math.max(c1.getLuminance(),c2.getLuminance())+0.05) / (Math.min(c1.getLuminance(),c2.getLuminance())+0.05);
+-};
++    while (pbf.pos < end) {
++        var tag = pbf.readVarint() >> 3;
+ 
+-// `isReadable`
+-// Ensure that foreground and background color combinations meet WCAG2 guidelines.
+-// The third argument is an optional Object.
+-//      the 'level' property states 'AA' or 'AAA' - if missing or invalid, it defaults to 'AA';
+-//      the 'size' property states 'large' or 'small' - if missing or invalid, it defaults to 'small'.
+-// If the entire object is absent, isReadable defaults to {level:"AA",size:"small"}.
++        value = tag === 1 ? pbf.readString() :
++            tag === 2 ? pbf.readFloat() :
++            tag === 3 ? pbf.readDouble() :
++            tag === 4 ? pbf.readVarint64() :
++            tag === 5 ? pbf.readVarint() :
++            tag === 6 ? pbf.readSVarint() :
++            tag === 7 ? pbf.readBoolean() : null;
++    }
+ 
+-// *Example*
+-//    tinycolor.isReadable("#000", "#111") => false
+-//    tinycolor.isReadable("#000", "#111",{level:"AA",size:"large"}) => false
+-tinycolor.isReadable = function(color1, color2, wcag2) {
+-    var readability = tinycolor.readability(color1, color2);
+-    var wcag2Parms, out;
++    return value;
++}
+ 
+-    out = false;
++// return feature `i` from this layer as a `VectorTileFeature`
++VectorTileLayer.prototype.feature = function(i) {
++    if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');
+ 
+-    wcag2Parms = validateWCAG2Parms(wcag2);
+-    switch (wcag2Parms.level + wcag2Parms.size) {
+-        case "AAsmall":
+-        case "AAAlarge":
+-            out = readability >= 4.5;
+-            break;
+-        case "AAlarge":
+-            out = readability >= 3;
+-            break;
+-        case "AAAsmall":
+-            out = readability >= 7;
+-            break;
+-    }
+-    return out;
++    this._pbf.pos = this._features[i];
+ 
++    var end = this._pbf.readVarint() + this._pbf.pos;
++    return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);
+ };
+ 
+-// `mostReadable`
+-// Given a base color and a list of possible foreground or background
+-// colors for that base, returns the most readable color.
+-// Optionally returns Black or White if the most readable color is unreadable.
+-// *Example*
+-//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:false}).toHexString(); // "#112255"
+-//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:true}).toHexString();  // "#ffffff"
+-//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"large"}).toHexString(); // "#faf3f3"
+-//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"small"}).toHexString(); // "#ffffff"
+-tinycolor.mostReadable = function(baseColor, colorList, args) {
+-    var bestColor = null;
+-    var bestScore = 0;
+-    var readability;
+-    var includeFallbackColors, level, size ;
+-    args = args || {};
+-    includeFallbackColors = args.includeFallbackColors ;
+-    level = args.level;
+-    size = args.size;
++},{"./vectortilefeature.js":186}],188:[function(require,module,exports){
++var Pbf = require('pbf')
++var vtpb = require('./vector-tile-pb')
++var GeoJSONWrapper = require('./lib/geojson_wrapper')
+ 
+-    for (var i= 0; i < colorList.length ; i++) {
+-        readability = tinycolor.readability(baseColor, colorList[i]);
+-        if (readability > bestScore) {
+-            bestScore = readability;
+-            bestColor = tinycolor(colorList[i]);
+-        }
+-    }
++module.exports = fromVectorTileJs
++module.exports.fromVectorTileJs = fromVectorTileJs
++module.exports.fromGeojsonVt = fromGeojsonVt
++module.exports.GeoJSONWrapper = GeoJSONWrapper
+ 
+-    if (tinycolor.isReadable(baseColor, bestColor, {"level":level,"size":size}) || !includeFallbackColors) {
+-        return bestColor;
+-    }
+-    else {
+-        args.includeFallbackColors=false;
+-        return tinycolor.mostReadable(baseColor,["#fff", "#000"],args);
+-    }
+-};
++/**
++ * Serialize a vector-tile-js-created tile to pbf
++ *
++ * @param {Object} tile
++ * @return {Buffer} uncompressed, pbf-serialized tile data
++ */
++function fromVectorTileJs (tile) {
++  var layers = []
++  for (var l in tile.layers) {
++    layers.push(prepareLayer(tile.layers[l]))
++  }
+ 
++  var out = new Pbf()
++  vtpb.tile.write({ layers: layers }, out)
++  return out.finish()
++}
+ 
+-// Big List of Colors
+-// ------------------
+-// <http://www.w3.org/TR/css3-color/#svg-color>
+-var names = tinycolor.names = {
+-    aliceblue: "f0f8ff",
+-    antiquewhite: "faebd7",
+-    aqua: "0ff",
+-    aquamarine: "7fffd4",
+-    azure: "f0ffff",
+-    beige: "f5f5dc",
+-    bisque: "ffe4c4",
+-    black: "000",
+-    blanchedalmond: "ffebcd",
+-    blue: "00f",
+-    blueviolet: "8a2be2",
+-    brown: "a52a2a",
+-    burlywood: "deb887",
+-    burntsienna: "ea7e5d",
+-    cadetblue: "5f9ea0",
+-    chartreuse: "7fff00",
+-    chocolate: "d2691e",
+-    coral: "ff7f50",
+-    cornflowerblue: "6495ed",
+-    cornsilk: "fff8dc",
+-    crimson: "dc143c",
+-    cyan: "0ff",
+-    darkblue: "00008b",
+-    darkcyan: "008b8b",
+-    darkgoldenrod: "b8860b",
+-    darkgray: "a9a9a9",
+-    darkgreen: "006400",
+-    darkgrey: "a9a9a9",
+-    darkkhaki: "bdb76b",
+-    darkmagenta: "8b008b",
+-    darkolivegreen: "556b2f",
+-    darkorange: "ff8c00",
+-    darkorchid: "9932cc",
+-    darkred: "8b0000",
+-    darksalmon: "e9967a",
+-    darkseagreen: "8fbc8f",
+-    darkslateblue: "483d8b",
+-    darkslategray: "2f4f4f",
+-    darkslategrey: "2f4f4f",
+-    darkturquoise: "00ced1",
+-    darkviolet: "9400d3",
+-    deeppink: "ff1493",
+-    deepskyblue: "00bfff",
+-    dimgray: "696969",
+-    dimgrey: "696969",
+-    dodgerblue: "1e90ff",
+-    firebrick: "b22222",
+-    floralwhite: "fffaf0",
+-    forestgreen: "228b22",
+-    fuchsia: "f0f",
+-    gainsboro: "dcdcdc",
+-    ghostwhite: "f8f8ff",
+-    gold: "ffd700",
+-    goldenrod: "daa520",
+-    gray: "808080",
+-    green: "008000",
+-    greenyellow: "adff2f",
+-    grey: "808080",
+-    honeydew: "f0fff0",
+-    hotpink: "ff69b4",
+-    indianred: "cd5c5c",
+-    indigo: "4b0082",
+-    ivory: "fffff0",
+-    khaki: "f0e68c",
+-    lavender: "e6e6fa",
+-    lavenderblush: "fff0f5",
+-    lawngreen: "7cfc00",
+-    lemonchiffon: "fffacd",
+-    lightblue: "add8e6",
+-    lightcoral: "f08080",
+-    lightcyan: "e0ffff",
+-    lightgoldenrodyellow: "fafad2",
+-    lightgray: "d3d3d3",
+-    lightgreen: "90ee90",
+-    lightgrey: "d3d3d3",
+-    lightpink: "ffb6c1",
+-    lightsalmon: "ffa07a",
+-    lightseagreen: "20b2aa",
+-    lightskyblue: "87cefa",
+-    lightslategray: "789",
+-    lightslategrey: "789",
+-    lightsteelblue: "b0c4de",
+-    lightyellow: "ffffe0",
+-    lime: "0f0",
+-    limegreen: "32cd32",
+-    linen: "faf0e6",
+-    magenta: "f0f",
+-    maroon: "800000",
+-    mediumaquamarine: "66cdaa",
+-    mediumblue: "0000cd",
+-    mediumorchid: "ba55d3",
+-    mediumpurple: "9370db",
+-    mediumseagreen: "3cb371",
+-    mediumslateblue: "7b68ee",
+-    mediumspringgreen: "00fa9a",
+-    mediumturquoise: "48d1cc",
+-    mediumvioletred: "c71585",
+-    midnightblue: "191970",
+-    mintcream: "f5fffa",
+-    mistyrose: "ffe4e1",
+-    moccasin: "ffe4b5",
+-    navajowhite: "ffdead",
+-    navy: "000080",
+-    oldlace: "fdf5e6",
+-    olive: "808000",
+-    olivedrab: "6b8e23",
+-    orange: "ffa500",
+-    orangered: "ff4500",
+-    orchid: "da70d6",
+-    palegoldenrod: "eee8aa",
+-    palegreen: "98fb98",
+-    paleturquoise: "afeeee",
+-    palevioletred: "db7093",
+-    papayawhip: "ffefd5",
+-    peachpuff: "ffdab9",
+-    peru: "cd853f",
+-    pink: "ffc0cb",
+-    plum: "dda0dd",
+-    powderblue: "b0e0e6",
+-    purple: "800080",
+-    rebeccapurple: "663399",
+-    red: "f00",
+-    rosybrown: "bc8f8f",
+-    royalblue: "4169e1",
+-    saddlebrown: "8b4513",
+-    salmon: "fa8072",
+-    sandybrown: "f4a460",
+-    seagreen: "2e8b57",
+-    seashell: "fff5ee",
+-    sienna: "a0522d",
+-    silver: "c0c0c0",
+-    skyblue: "87ceeb",
+-    slateblue: "6a5acd",
+-    slategray: "708090",
+-    slategrey: "708090",
+-    snow: "fffafa",
+-    springgreen: "00ff7f",
+-    steelblue: "4682b4",
+-    tan: "d2b48c",
+-    teal: "008080",
+-    thistle: "d8bfd8",
+-    tomato: "ff6347",
+-    turquoise: "40e0d0",
+-    violet: "ee82ee",
+-    wheat: "f5deb3",
+-    white: "fff",
+-    whitesmoke: "f5f5f5",
+-    yellow: "ff0",
+-    yellowgreen: "9acd32"
+-};
++/**
++ * Serialized a geojson-vt-created tile to pbf.
++ *
++ * @param {Object} layers - An object mapping layer names to geojson-vt-created vector tile objects
++ * @return {Buffer} uncompressed, pbf-serialized tile data
++ */
++function fromGeojsonVt (layers) {
++  var l = {}
++  for (var k in layers) {
++    l[k] = new GeoJSONWrapper(layers[k].features)
++    l[k].name = k
++  }
++  return fromVectorTileJs({layers: l})
++}
+ 
+-// Make it easy to access colors via `hexNames[hex]`
+-var hexNames = tinycolor.hexNames = flip(names);
++/**
++ * Prepare the given layer to be serialized by the auto-generated pbf
++ * serializer by encoding the feature geometry and properties.
++ */
++function prepareLayer (layer) {
++  var preparedLayer = {
++    name: layer.name || '',
++    version: layer.version || 1,
++    extent: layer.extent || 4096,
++    keys: [],
++    values: [],
++    features: []
++  }
+ 
++  var keycache = {}
++  var valuecache = {}
+ 
+-// Utilities
+-// ---------
++  for (var i = 0; i < layer.length; i++) {
++    var feature = layer.feature(i)
++    feature.geometry = encodeGeometry(feature.loadGeometry())
+ 
+-// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
+-function flip(o) {
+-    var flipped = { };
+-    for (var i in o) {
+-        if (o.hasOwnProperty(i)) {
+-            flipped[o[i]] = i;
+-        }
++    var tags = []
++    for (var key in feature.properties) {
++      var keyIndex = keycache[key]
++      if (typeof keyIndex === 'undefined') {
++        preparedLayer.keys.push(key)
++        keyIndex = preparedLayer.keys.length - 1
++        keycache[key] = keyIndex
++      }
++      var value = wrapValue(feature.properties[key])
++      var valueIndex = valuecache[value.key]
++      if (typeof valueIndex === 'undefined') {
++        preparedLayer.values.push(value)
++        valueIndex = preparedLayer.values.length - 1
++        valuecache[value.key] = valueIndex
++      }
++      tags.push(keyIndex)
++      tags.push(valueIndex)
+     }
+-    return flipped;
++
++    feature.tags = tags
++    preparedLayer.features.push(feature)
++  }
++
++  return preparedLayer
+ }
+ 
+-// Return a valid alpha value [0,1] with all invalid values being set to 1
+-function boundAlpha(a) {
+-    a = parseFloat(a);
++function command (cmd, length) {
++  return (length << 3) + (cmd & 0x7)
++}
+ 
+-    if (isNaN(a) || a < 0 || a > 1) {
+-        a = 1;
++function zigzag (num) {
++  return (num << 1) ^ (num >> 31)
++}
++
++/**
++ * Encode a polygon's geometry into an array ready to be serialized
++ * to mapbox vector tile specified geometry data.
++ *
++ * @param {Array} Rings, each being an array of [x, y] tile-space coordinates
++ * @return {Array} encoded geometry
++ */
++function encodeGeometry (geometry) {
++  var encoded = []
++  var x = 0
++  var y = 0
++  var rings = geometry.length
++  for (var r = 0; r < rings; r++) {
++    var ring = geometry[r]
++    encoded.push(command(1, 1)) // moveto
++    for (var i = 0; i < ring.length; i++) {
++      if (i === 1) {
++        encoded.push(command(2, ring.length - 1)) // lineto
++      }
++      var dx = ring[i].x - x
++      var dy = ring[i].y - y
++      encoded.push(zigzag(dx), zigzag(dy))
++      x += dx
++      y += dy
+     }
++  }
+ 
+-    return a;
++  return encoded
+ }
+ 
+-// Take input from [0, n] and return it as [0, 1]
+-function bound01(n, max) {
+-    if (isOnePointZero(n)) { n = "100%"; }
++/**
++ * Wrap a property value according to its type. The returned object
++ * is of the form { xxxx_value: primitiveValue }, which is what the generated
++ * protobuf serializer expects.
++ */
++function wrapValue (value) {
++  var result
++  var type = typeof value
++  if (type === 'string') {
++    result = { string_value: value }
++  } else if (type === 'boolean') {
++    result = { bool_value: value }
++  } else if (type === 'number') {
++    if (value % 1 !== 0) {
++      result = { double_value: value }
++    } else if (value < 0) {
++      result = { sint_value: value }
++    } else {
++      result = { uint_value: value }
++    }
++  } else {
++    value = JSON.stringify(value)
++    result = { string_value: value }
++  }
+ 
+-    var processPercent = isPercentage(n);
+-    n = mathMin(max, mathMax(0, parseFloat(n)));
++  result.key = type + ':' + value
++  return result
++}
+ 
+-    // Automatically convert percentage into number
+-    if (processPercent) {
+-        n = parseInt(n * max, 10) / 100;
++},{"./lib/geojson_wrapper":189,"./vector-tile-pb":190,"pbf":173}],189:[function(require,module,exports){
++'use strict'
++
++var Point = require('point-geometry')
++var VectorTileFeature = require('vector-tile').VectorTileFeature
++
++module.exports = GeoJSONWrapper
++
++// conform to vectortile api
++function GeoJSONWrapper (features) {
++  this.features = features
++  this.length = features.length
++}
++
++GeoJSONWrapper.prototype.feature = function (i) {
++  return new FeatureWrapper(this.features[i])
++}
++
++function FeatureWrapper (feature) {
++  this.id = typeof feature.id === 'number' ? feature.id : undefined
++  this.type = feature.type
++  this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry
++  this.properties = feature.tags
++  this.extent = 4096
++}
++
++FeatureWrapper.prototype.loadGeometry = function () {
++  var rings = this.rawGeometry
++  this.geometry = []
++
++  for (var i = 0; i < rings.length; i++) {
++    var ring = rings[i]
++    var newRing = []
++    for (var j = 0; j < ring.length; j++) {
++      newRing.push(new Point(ring[j][0], ring[j][1]))
+     }
++    this.geometry.push(newRing)
++  }
++  return this.geometry
++}
+ 
+-    // Handle floating point rounding errors
+-    if ((math.abs(n - max) < 0.000001)) {
+-        return 1;
++FeatureWrapper.prototype.bbox = function () {
++  if (!this.geometry) this.loadGeometry()
++
++  var rings = this.geometry
++  var x1 = Infinity
++  var x2 = -Infinity
++  var y1 = Infinity
++  var y2 = -Infinity
++
++  for (var i = 0; i < rings.length; i++) {
++    var ring = rings[i]
++
++    for (var j = 0; j < ring.length; j++) {
++      var coord = ring[j]
++
++      x1 = Math.min(x1, coord.x)
++      x2 = Math.max(x2, coord.x)
++      y1 = Math.min(y1, coord.y)
++      y2 = Math.max(y2, coord.y)
+     }
++  }
+ 
+-    // Convert into [0, 1] range if it isn't already
+-    return (n % max) / parseFloat(max);
++  return [x1, y1, x2, y2]
+ }
+ 
+-// Force a number between 0 and 1
+-function clamp01(val) {
+-    return mathMin(1, mathMax(0, val));
++FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON
++
++},{"point-geometry":174,"vector-tile":184}],190:[function(require,module,exports){
++'use strict';
++
++// tile ========================================
++
++var tile = exports.tile = {read: readTile, write: writeTile};
++
++tile.GeomType = {
++    "Unknown": 0,
++    "Point": 1,
++    "LineString": 2,
++    "Polygon": 3
++};
++
++function readTile(pbf, end) {
++    return pbf.readFields(readTileField, {"layers": []}, end);
+ }
+ 
+-// Parse a base-16 hex value into a base-10 integer
+-function parseIntFromHex(val) {
+-    return parseInt(val, 16);
++function readTileField(tag, tile, pbf) {
++    if (tag === 3) tile.layers.push(readLayer(pbf, pbf.readVarint() + pbf.pos));
+ }
+ 
+-// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
+-// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
+-function isOnePointZero(n) {
+-    return typeof n == "string" && n.indexOf('.') != -1 && parseFloat(n) === 1;
++function writeTile(tile, pbf) {
++    var i;
++    if (tile.layers !== undefined) for (i = 0; i < tile.layers.length; i++) pbf.writeMessage(3, writeLayer, tile.layers[i]);
+ }
+ 
+-// Check to see if string passed in is a percentage
+-function isPercentage(n) {
+-    return typeof n === "string" && n.indexOf('%') != -1;
++// value ========================================
++
++tile.value = {read: readValue, write: writeValue};
++
++function readValue(pbf, end) {
++    return pbf.readFields(readValueField, {}, end);
+ }
+ 
+-// Force a hex value to have 2 characters
+-function pad2(c) {
+-    return c.length == 1 ? '0' + c : '' + c;
++function readValueField(tag, value, pbf) {
++    if (tag === 1) value.string_value = pbf.readString();
++    else if (tag === 2) value.float_value = pbf.readFloat();
++    else if (tag === 3) value.double_value = pbf.readDouble();
++    else if (tag === 4) value.int_value = pbf.readVarint();
++    else if (tag === 5) value.uint_value = pbf.readVarint();
++    else if (tag === 6) value.sint_value = pbf.readSVarint();
++    else if (tag === 7) value.bool_value = pbf.readBoolean();
+ }
+ 
+-// Replace a decimal with it's percentage value
+-function convertToPercentage(n) {
+-    if (n <= 1) {
+-        n = (n * 100) + "%";
+-    }
++function writeValue(value, pbf) {
++    if (value.string_value !== undefined) pbf.writeStringField(1, value.string_value);
++    if (value.float_value !== undefined) pbf.writeFloatField(2, value.float_value);
++    if (value.double_value !== undefined) pbf.writeDoubleField(3, value.double_value);
++    if (value.int_value !== undefined) pbf.writeVarintField(4, value.int_value);
++    if (value.uint_value !== undefined) pbf.writeVarintField(5, value.uint_value);
++    if (value.sint_value !== undefined) pbf.writeSVarintField(6, value.sint_value);
++    if (value.bool_value !== undefined) pbf.writeBooleanField(7, value.bool_value);
++}
+ 
+-    return n;
++// feature ========================================
++
++tile.feature = {read: readFeature, write: writeFeature};
++
++function readFeature(pbf, end) {
++    var feature = pbf.readFields(readFeatureField, {}, end);
++    if (feature.type === undefined) feature.type = "Unknown";
++    return feature;
+ }
+ 
+-// Converts a decimal to a hex value
+-function convertDecimalToHex(d) {
+-    return Math.round(parseFloat(d) * 255).toString(16);
++function readFeatureField(tag, feature, pbf) {
++    if (tag === 1) feature.id = pbf.readVarint();
++    else if (tag === 2) feature.tags = pbf.readPackedVarint();
++    else if (tag === 3) feature.type = pbf.readVarint();
++    else if (tag === 4) feature.geometry = pbf.readPackedVarint();
+ }
+-// Converts a hex value to a decimal
+-function convertHexToDecimal(h) {
+-    return (parseIntFromHex(h) / 255);
++
++function writeFeature(feature, pbf) {
++    if (feature.id !== undefined) pbf.writeVarintField(1, feature.id);
++    if (feature.tags !== undefined) pbf.writePackedVarint(2, feature.tags);
++    if (feature.type !== undefined) pbf.writeVarintField(3, feature.type);
++    if (feature.geometry !== undefined) pbf.writePackedVarint(4, feature.geometry);
+ }
+ 
+-var matchers = (function() {
++// layer ========================================
+ 
+-    // <http://www.w3.org/TR/css3-values/#integers>
+-    var CSS_INTEGER = "[-\\+]?\\d+%?";
++tile.layer = {read: readLayer, write: writeLayer};
+ 
+-    // <http://www.w3.org/TR/css3-values/#number-value>
+-    var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";
++function readLayer(pbf, end) {
++    return pbf.readFields(readLayerField, {"features": [], "keys": [], "values": []}, end);
++}
+ 
+-    // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
+-    var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";
++function readLayerField(tag, layer, pbf) {
++    if (tag === 15) layer.version = pbf.readVarint();
++    else if (tag === 1) layer.name = pbf.readString();
++    else if (tag === 2) layer.features.push(readFeature(pbf, pbf.readVarint() + pbf.pos));
++    else if (tag === 3) layer.keys.push(pbf.readString());
++    else if (tag === 4) layer.values.push(readValue(pbf, pbf.readVarint() + pbf.pos));
++    else if (tag === 5) layer.extent = pbf.readVarint();
++}
+ 
+-    // Actual matching.
+-    // Parentheses and commas are optional, but not required.
+-    // Whitespace can take the place of commas or opening paren
+-    var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+-    var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
++function writeLayer(layer, pbf) {
++    if (layer.version !== undefined) pbf.writeVarintField(15, layer.version);
++    if (layer.name !== undefined) pbf.writeStringField(1, layer.name);
++    var i;
++    if (layer.features !== undefined) for (i = 0; i < layer.features.length; i++) pbf.writeMessage(2, writeFeature, layer.features[i]);
++    if (layer.keys !== undefined) for (i = 0; i < layer.keys.length; i++) pbf.writeStringField(3, layer.keys[i]);
++    if (layer.values !== undefined) for (i = 0; i < layer.values.length; i++) pbf.writeMessage(4, writeValue, layer.values[i]);
++    if (layer.extent !== undefined) pbf.writeVarintField(5, layer.extent);
++}
+ 
+-    return {
+-        rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
+-        rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
+-        hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
+-        hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
+-        hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
+-        hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
+-        hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+-        hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
+-        hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
+-    };
+-})();
++},{}],191:[function(require,module,exports){
++var bundleFn = arguments[3];
++var sources = arguments[4];
++var cache = arguments[5];
+ 
+-// `stringInputToObject`
+-// Permissive string parsing.  Take in a number of formats, and output an object
+-// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
+-function stringInputToObject(color) {
++var stringify = JSON.stringify;
+ 
+-    color = color.replace(trimLeft,'').replace(trimRight, '').toLowerCase();
+-    var named = false;
+-    if (names[color]) {
+-        color = names[color];
+-        named = true;
+-    }
+-    else if (color == 'transparent') {
+-        return { r: 0, g: 0, b: 0, a: 0, format: "name" };
+-    }
++module.exports = function (fn, options) {
++    var wkey;
++    var cacheKeys = Object.keys(cache);
+ 
+-    // Try to match string input using regular expressions.
+-    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
+-    // Just return an object and let the conversion functions handle that.
+-    // This way the result will be the same whether the tinycolor is initialized with string or object.
+-    var match;
+-    if ((match = matchers.rgb.exec(color))) {
+-        return { r: match[1], g: match[2], b: match[3] };
+-    }
+-    if ((match = matchers.rgba.exec(color))) {
+-        return { r: match[1], g: match[2], b: match[3], a: match[4] };
+-    }
+-    if ((match = matchers.hsl.exec(color))) {
+-        return { h: match[1], s: match[2], l: match[3] };
+-    }
+-    if ((match = matchers.hsla.exec(color))) {
+-        return { h: match[1], s: match[2], l: match[3], a: match[4] };
+-    }
+-    if ((match = matchers.hsv.exec(color))) {
+-        return { h: match[1], s: match[2], v: match[3] };
+-    }
+-    if ((match = matchers.hsva.exec(color))) {
+-        return { h: match[1], s: match[2], v: match[3], a: match[4] };
+-    }
+-    if ((match = matchers.hex8.exec(color))) {
+-        return {
+-            a: convertHexToDecimal(match[1]),
+-            r: parseIntFromHex(match[2]),
+-            g: parseIntFromHex(match[3]),
+-            b: parseIntFromHex(match[4]),
+-            format: named ? "name" : "hex8"
+-        };
+-    }
+-    if ((match = matchers.hex6.exec(color))) {
+-        return {
+-            r: parseIntFromHex(match[1]),
+-            g: parseIntFromHex(match[2]),
+-            b: parseIntFromHex(match[3]),
+-            format: named ? "name" : "hex"
+-        };
++    for (var i = 0, l = cacheKeys.length; i < l; i++) {
++        var key = cacheKeys[i];
++        var exp = cache[key].exports;
++        // Using babel as a transpiler to use esmodule, the export will always
++        // be an object with the default export as a property of it. To ensure
++        // the existing api and babel esmodule exports are both supported we
++        // check for both
++        if (exp === fn || exp && exp.default === fn) {
++            wkey = key;
++            break;
++        }
+     }
+-    if ((match = matchers.hex3.exec(color))) {
+-        return {
+-            r: parseIntFromHex(match[1] + '' + match[1]),
+-            g: parseIntFromHex(match[2] + '' + match[2]),
+-            b: parseIntFromHex(match[3] + '' + match[3]),
+-            format: named ? "name" : "hex"
+-        };
++
++    if (!wkey) {
++        wkey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
++        var wcache = {};
++        for (var i = 0, l = cacheKeys.length; i < l; i++) {
++            var key = cacheKeys[i];
++            wcache[key] = key;
++        }
++        sources[wkey] = [
++            Function(['require','module','exports'], '(' + fn + ')(self)'),
++            wcache
++        ];
+     }
++    var skey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
+ 
+-    return false;
+-}
++    var scache = {}; scache[wkey] = wkey;
++    sources[skey] = [
++        Function(['require'], (
++            // try to call default if defined to also support babel esmodule
++            // exports
++            'var f = require(' + stringify(wkey) + ');' +
++            '(f.default ? f.default : f)(self);'
++        )),
++        scache
++    ];
+ 
+-function validateWCAG2Parms(parms) {
+-    // return valid WCAG2 parms for isReadable.
+-    // If input parms are invalid, return {"level":"AA", "size":"small"}
+-    var level, size;
+-    parms = parms || {"level":"AA", "size":"small"};
+-    level = (parms.level || "AA").toUpperCase();
+-    size = (parms.size || "small").toLowerCase();
+-    if (level !== "AA" && level !== "AAA") {
+-        level = "AA";
+-    }
+-    if (size !== "small" && size !== "large") {
+-        size = "small";
++    var workerSources = {};
++    resolveSources(skey);
++
++    function resolveSources(key) {
++        workerSources[key] = true;
++
++        for (var depPath in sources[key][1]) {
++            var depKey = sources[key][1][depPath];
++            if (!workerSources[depKey]) {
++                resolveSources(depKey);
++            }
++        }
+     }
+-    return {"level":level, "size":size};
+-}
+ 
+-// Node: Export function
+-if (typeof module !== "undefined" && module.exports) {
+-    module.exports = tinycolor;
+-}
+-// AMD/requirejs: Define the module
+-else if (typeof define === 'function' && define.amd) {
+-    define(function () {return tinycolor;});
+-}
+-// Browser: Expose to window
+-else {
+-    window.tinycolor = tinycolor;
+-}
++    var src = '(' + bundleFn + ')({'
++        + Object.keys(workerSources).map(function (key) {
++            return stringify(key) + ':['
++                + sources[key][0]
++                + ',' + stringify(sources[key][1]) + ']'
++            ;
++        }).join(',')
++        + '},{},[' + stringify(skey) + '])'
++    ;
+ 
+-})();
++    var URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
++
++    var blob = new Blob([src], { type: 'text/javascript' });
++    if (options && options.bare) { return blob; }
++    var workerUrl = URL.createObjectURL(blob);
++    var worker = new Worker(workerUrl);
++    worker.objectURL = workerUrl;
++    return worker;
++};
+ 
+ },{}],192:[function(require,module,exports){
++module.exports.RADIUS = 6378137;
++module.exports.FLATTENING = 1/298.257223563;
++module.exports.POLAR_RADIUS = 6356752.3142;
++
++},{}],193:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43321,7 +44611,7 @@ module.exports = [
+     }
+ ];
+ 
+-},{}],193:[function(require,module,exports){
++},{}],194:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -43514,7 +44804,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":271,"../../plots/cartesian/constants":298,"../../plots/font_attributes":311,"./arrow_paths":192}],194:[function(require,module,exports){
++},{"../../lib/extend":272,"../../plots/cartesian/constants":299,"../../plots/font_attributes":312,"./arrow_paths":193}],195:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44523,7 +45813,7 @@ function lineIntersect(x1, y1, x2, y2, x3, y3, x4, y4) {
+     return {x: x1 + a * t, y: y1 + d * t};
+ }
+ 
+-},{"../../lib":272,"../../lib/setcursor":281,"../../lib/svg_text_utils":283,"../../plotly":290,"../../plots/cartesian/axes":293,"../color":196,"../dragelement":217,"../drawing":219,"./arrow_paths":192,"./attributes":193,"d3":13,"fast-isnumeric":15}],195:[function(require,module,exports){
++},{"../../lib":273,"../../lib/setcursor":282,"../../lib/svg_text_utils":284,"../../plotly":291,"../../plots/cartesian/axes":294,"../color":197,"../dragelement":218,"../drawing":220,"./arrow_paths":193,"./attributes":194,"d3":8,"fast-isnumeric":11}],196:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44563,7 +45853,7 @@ exports.borderLine = '#BEC8D9';
+ // gives back exactly lightLine if the other colors are defaults.
+ exports.lightFraction = 100 * (0xe - 0x4) / (0xf - 0x4);
+ 
+-},{}],196:[function(require,module,exports){
++},{}],197:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44717,7 +46007,7 @@ function cleanOne(val) {
+     return 'rgb(' + rgbStr + ')';
+ }
+ 
+-},{"./attributes":195,"fast-isnumeric":15,"tinycolor2":191}],197:[function(require,module,exports){
++},{"./attributes":196,"fast-isnumeric":11,"tinycolor2":179}],198:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44872,7 +46162,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":271,"../../plots/cartesian/layout_attributes":302,"../../plots/font_attributes":311}],198:[function(require,module,exports){
++},{"../../lib/extend":272,"../../plots/cartesian/layout_attributes":303,"../../plots/font_attributes":312}],199:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -44939,7 +46229,7 @@ module.exports = function colorbarDefaults(containerIn, containerOut, layout) {
+     coerce('titleside');
+ };
+ 
+-},{"../../lib":272,"../../plots/cartesian/tick_label_defaults":308,"../../plots/cartesian/tick_mark_defaults":309,"../../plots/cartesian/tick_value_defaults":310,"./attributes":197}],199:[function(require,module,exports){
++},{"../../lib":273,"../../plots/cartesian/tick_label_defaults":309,"../../plots/cartesian/tick_mark_defaults":310,"../../plots/cartesian/tick_value_defaults":311,"./attributes":198}],200:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45569,7 +46859,7 @@ module.exports = function draw(gd, id) {
+     return component;
+ };
+ 
+-},{"../../lib":272,"../../lib/extend":271,"../../lib/setcursor":281,"../../plotly":290,"../../plots/cartesian/axes":293,"../../plots/cartesian/axis_defaults":294,"../../plots/cartesian/layout_attributes":302,"../../plots/cartesian/position_defaults":305,"../../plots/plots":320,"../color":196,"../dragelement":217,"../drawing":219,"../titles":259,"./attributes":197,"d3":13,"tinycolor2":191}],200:[function(require,module,exports){
++},{"../../lib":273,"../../lib/extend":272,"../../lib/setcursor":282,"../../plotly":291,"../../plots/cartesian/axes":294,"../../plots/cartesian/axis_defaults":295,"../../plots/cartesian/layout_attributes":303,"../../plots/cartesian/position_defaults":306,"../../plots/plots":321,"../color":197,"../dragelement":218,"../drawing":220,"../titles":260,"./attributes":198,"d3":8,"tinycolor2":179}],201:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45588,7 +46878,7 @@ module.exports = function hasColorbar(container) {
+     return Lib.isPlainObject(container.colorbar);
+ };
+ 
+-},{"../../lib":272}],201:[function(require,module,exports){
++},{"../../lib":273}],202:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45609,7 +46899,7 @@ exports.draw = require('./draw');
+ 
+ exports.hasColorbar = require('./has_colorbar');
+ 
+-},{"./attributes":197,"./defaults":198,"./draw":199,"./has_colorbar":200}],202:[function(require,module,exports){
++},{"./attributes":198,"./defaults":199,"./draw":200,"./has_colorbar":201}],203:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45664,7 +46954,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],203:[function(require,module,exports){
++},{}],204:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45730,7 +47020,7 @@ module.exports = function calc(trace, vals, containerStr, cLetter) {
+     }
+ };
+ 
+-},{"../../lib":272,"./flip_scale":207,"./scales":214}],204:[function(require,module,exports){
++},{"../../lib":273,"./flip_scale":208,"./scales":215}],205:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45774,7 +47064,7 @@ module.exports = function makeColorScaleAttributes(context) {
+     };
+ };
+ 
+-},{"../../lib/extend":271,"./attributes":202,"./scales.js":214}],205:[function(require,module,exports){
++},{"../../lib/extend":272,"./attributes":203,"./scales.js":215}],206:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45790,7 +47080,7 @@ var scales = require('./scales');
+ 
+ module.exports = scales.RdBu;
+ 
+-},{"./scales":214}],206:[function(require,module,exports){
++},{"./scales":215}],207:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45854,7 +47144,7 @@ module.exports = function colorScaleDefaults(traceIn, traceOut, layout, coerce,
+     if(showScale) colorbarDefaults(containerIn, containerOut, layout);
+ };
+ 
+-},{"../../lib":272,"../colorbar/defaults":198,"../colorbar/has_colorbar":200,"./flip_scale":207,"./is_valid_scale":211,"fast-isnumeric":15}],207:[function(require,module,exports){
++},{"../../lib":273,"../colorbar/defaults":199,"../colorbar/has_colorbar":201,"./flip_scale":208,"./is_valid_scale":212,"fast-isnumeric":11}],208:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45879,7 +47169,7 @@ module.exports = function flipScale(scl) {
+     return sclNew;
+ };
+ 
+-},{}],208:[function(require,module,exports){
++},{}],209:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45919,7 +47209,7 @@ module.exports = function getScale(scl, dflt) {
+     return scl;
+ };
+ 
+-},{"./default_scale":205,"./is_valid_scale_array":212,"./scales":214}],209:[function(require,module,exports){
++},{"./default_scale":206,"./is_valid_scale_array":213,"./scales":215}],210:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45965,7 +47255,7 @@ module.exports = function hasColorscale(trace, containerStr) {
+     );
+ };
+ 
+-},{"../../lib":272,"./is_valid_scale":211,"fast-isnumeric":15}],210:[function(require,module,exports){
++},{"../../lib":273,"./is_valid_scale":212,"fast-isnumeric":11}],211:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -45997,7 +47287,7 @@ exports.flipScale = require('./flip_scale');
+ 
+ exports.makeScaleFunction = require('./make_scale_function');
+ 
+-},{"./attributes":202,"./calc":203,"./default_scale":205,"./defaults":206,"./flip_scale":207,"./get_scale":208,"./has_colorscale":209,"./is_valid_scale":211,"./make_scale_function":213,"./scales":214}],211:[function(require,module,exports){
++},{"./attributes":203,"./calc":204,"./default_scale":206,"./defaults":207,"./flip_scale":208,"./get_scale":209,"./has_colorscale":210,"./is_valid_scale":212,"./make_scale_function":214,"./scales":215}],212:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46018,7 +47308,7 @@ module.exports = function isValidScale(scl) {
+     else return isValidScaleArray(scl);
+ };
+ 
+-},{"./is_valid_scale_array":212,"./scales":214}],212:[function(require,module,exports){
++},{"./is_valid_scale_array":213,"./scales":215}],213:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46055,7 +47345,7 @@ module.exports = function isValidScaleArray(scl) {
+     return true;
+ };
+ 
+-},{"tinycolor2":191}],213:[function(require,module,exports){
++},{"tinycolor2":179}],214:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46104,7 +47394,7 @@ module.exports = function makeScaleFunction(scl, cmin, cmax) {
+     };
+ };
+ 
+-},{"../../lib":272,"../color":196,"d3":13,"fast-isnumeric":15,"tinycolor2":191}],214:[function(require,module,exports){
++},{"../../lib":273,"../color":197,"d3":8,"fast-isnumeric":11,"tinycolor2":179}],215:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46235,7 +47525,7 @@ module.exports = {
+     ]
+ };
+ 
+-},{}],215:[function(require,module,exports){
++},{}],216:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46268,7 +47558,7 @@ module.exports = function align(v, dv, v0, v1, anchor) {
+     return vc;
+ };
+ 
+-},{}],216:[function(require,module,exports){
++},{}],217:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46306,7 +47596,7 @@ module.exports = function getCursor(x, y, xanchor, yanchor) {
+     return cursorset[y][x];
+ };
+ 
+-},{"../../lib":272}],217:[function(require,module,exports){
++},{"../../lib":273}],218:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46491,7 +47781,7 @@ function finishDrag(gd) {
+     if(gd._replotPending) Plotly.plot(gd);
+ }
+ 
+-},{"../../lib":272,"../../plotly":290,"../../plots/cartesian/constants":298,"./align":215,"./cursor":216,"./unhover":218}],218:[function(require,module,exports){
++},{"../../lib":273,"../../plotly":291,"../../plots/cartesian/constants":299,"./align":216,"./cursor":217,"./unhover":219}],219:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -46542,7 +47832,7 @@ unhover.raw = function unhoverRaw(gd, evt) {
+     gd._hoverdata = undefined;
+ };
+ 
+-},{"../../lib/events":270}],219:[function(require,module,exports){
++},{"../../lib/events":271}],220:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47106,7 +48396,7 @@ drawing.setClipUrl = function(s, localId) {
+     s.attr('clip-path', 'url(' + url + ')');
+ };
+ 
+-},{"../../constants/xmlns_namespaces":265,"../../lib":272,"../../lib/svg_text_utils":283,"../../plots/plots":320,"../../traces/scatter/make_bubble_size_func":350,"../../traces/scatter/subtypes":355,"../color":196,"../colorscale":210,"./symbol_defs":220,"d3":13,"fast-isnumeric":15}],220:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":266,"../../lib":273,"../../lib/svg_text_utils":284,"../../plots/plots":321,"../../traces/scatter/make_bubble_size_func":351,"../../traces/scatter/subtypes":356,"../color":197,"../colorscale":211,"./symbol_defs":221,"d3":8,"fast-isnumeric":11}],221:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47582,7 +48872,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"d3":13}],221:[function(require,module,exports){
++},{"d3":8}],222:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47681,7 +48971,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],222:[function(require,module,exports){
++},{}],223:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47744,7 +49034,7 @@ function calcOneAxis(calcTrace, trace, axis, coord) {
+     Axes.expand(axis, vals, {padded: true});
+ }
+ 
+-},{"../../plots/cartesian/axes":293,"../../plots/plots":320,"./compute_error":223,"fast-isnumeric":15}],223:[function(require,module,exports){
++},{"../../plots/cartesian/axes":294,"../../plots/plots":321,"./compute_error":224,"fast-isnumeric":11}],224:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47840,7 +49130,7 @@ function makeComputeErrorValue(type, value) {
+     }
+ }
+ 
+-},{}],224:[function(require,module,exports){
++},{}],225:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47917,7 +49207,7 @@ module.exports = function(traceIn, traceOut, defaultColor, opts) {
+     }
+ };
+ 
+-},{"../../lib":272,"../../plots/plots":320,"./attributes":221,"fast-isnumeric":15}],225:[function(require,module,exports){
++},{"../../lib":273,"../../plots/plots":321,"./attributes":222,"fast-isnumeric":11}],226:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -47976,7 +49266,7 @@ errorBars.hoverInfo = function(calcPoint, trace, hoverPoint) {
+     }
+ };
+ 
+-},{"./attributes":221,"./calc":222,"./defaults":224,"./plot":226,"./style":227}],226:[function(require,module,exports){
++},{"./attributes":222,"./calc":223,"./defaults":225,"./plot":227,"./style":228}],227:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48097,7 +49387,7 @@ function errorCoords(d, xa, ya) {
+     return out;
+ }
+ 
+-},{"../../lib":272,"../../traces/scatter/subtypes":355,"d3":13,"fast-isnumeric":15}],227:[function(require,module,exports){
++},{"../../lib":273,"../../traces/scatter/subtypes":356,"d3":8,"fast-isnumeric":11}],228:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48134,7 +49424,7 @@ module.exports = function style(traces) {
+     });
+ };
+ 
+-},{"../color":196,"d3":13}],228:[function(require,module,exports){
++},{"../color":197,"d3":8}],229:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48249,7 +49539,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../plots/cartesian/constants":298}],229:[function(require,module,exports){
++},{"../../plots/cartesian/constants":299}],230:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48315,7 +49605,7 @@ function imageDefaults(imageIn, imageOut, fullLayout) {
+     return imageOut;
+ }
+ 
+-},{"../../lib":272,"../../plots/cartesian/axes":293,"./attributes":228}],230:[function(require,module,exports){
++},{"../../lib":273,"../../plots/cartesian/axes":294,"./attributes":229}],231:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48488,7 +49778,7 @@ module.exports = function draw(gd) {
+     imagesAbove.each(applyAttributes);
+ };
+ 
+-},{"../../plots/cartesian/axes":293,"../drawing":219,"d3":13}],231:[function(require,module,exports){
++},{"../../plots/cartesian/axes":294,"../drawing":220,"d3":8}],232:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48511,7 +49801,7 @@ module.exports = {
+     supplyLayoutDefaults: supplyLayoutDefaults
+ };
+ 
+-},{"./attributes":228,"./defaults":229,"./draw":230}],232:[function(require,module,exports){
++},{"./attributes":229,"./defaults":230,"./draw":231}],233:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48560,7 +49850,7 @@ exports.isMiddleAnchor = function isMiddleAnchor(opts) {
+     );
+ };
+ 
+-},{}],233:[function(require,module,exports){
++},{}],234:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48605,6 +49895,13 @@ module.exports = {
+         
+         
+     },
++    horizontalspacing: {
++        valType: 'enumerated',
++        values: ['column', 'wrapped'],
++        dflt: ['column'],
++        
++        
++    },
+     traceorder: {
+         valType: 'flaglist',
+         flags: ['reversed', 'grouped'],
+@@ -48651,7 +49948,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":271,"../../plots/font_attributes":311,"../color/attributes":195}],234:[function(require,module,exports){
++},{"../../lib/extend":272,"../../plots/font_attributes":312,"../color/attributes":196}],235:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48669,7 +49966,7 @@ module.exports = {
+     scrollBarMargin: 4
+ };
+ 
+-},{}],235:[function(require,module,exports){
++},{}],236:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -48694,6 +49991,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+ 
+     var visibleTraces = 0,
+         defaultOrder = 'normal',
++        defaultHorizontalSpacing = 'column',
+         defaultX,
+         defaultY,
+         defaultXAnchor,
+@@ -48758,10 +50056,11 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+     coerce('xanchor', defaultXAnchor);
+     coerce('y', defaultY);
+     coerce('yanchor', defaultYAnchor);
++    coerce('horizontalspacing', defaultHorizontalSpacing);
+     Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
+ };
+ 
+-},{"../../lib":272,"../../plots/plots":320,"./attributes":233,"./helpers":238}],236:[function(require,module,exports){
++},{"../../lib":273,"../../plots/plots":321,"./attributes":234,"./helpers":239}],237:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49238,7 +50537,8 @@ function computeLegendDimensions(gd, groups, traces) {
+     var fullLayout = gd._fullLayout,
+         opts = fullLayout.legend,
+         borderwidth = opts.borderwidth,
+-        isGrouped = helpers.isGrouped(opts);
++        isGrouped = helpers.isGrouped(opts),
++        isHorizontalColumn = helpers.isHorizontalColumn(opts);
+ 
+     if(helpers.isVertical(opts)) {
+         if(isGrouped) {
+@@ -49345,7 +50645,7 @@ function computeLegendDimensions(gd, groups, traces) {
+         traces.each(function(d) {
+ 
+             var legendItem = d[0],
+-                traceWidth = maxTraceWidth,
++                traceWidth = isHorizontalColumn ? maxTraceWidth : 40 + d[0],
+                 traceGap = opts.tracegroupgap || 5;
+ 
+             if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
+@@ -49434,7 +50734,7 @@ function expandHorizontalMargin(gd) {
+     });
+ }
+ 
+-},{"../../lib":272,"../../plotly":290,"../../plots/plots":320,"../color":196,"../dragelement":217,"../drawing":219,"./anchor_utils":232,"./constants":234,"./get_legend_data":237,"./helpers":238,"./style":240,"d3":13}],237:[function(require,module,exports){
++},{"../../lib":273,"../../plotly":291,"../../plots/plots":321,"../color":197,"../dragelement":218,"../drawing":220,"./anchor_utils":233,"./constants":235,"./get_legend_data":238,"./helpers":239,"./style":241,"d3":8}],238:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49540,7 +50840,7 @@ module.exports = function getLegendData(calcdata, opts) {
+     return legendData;
+ };
+ 
+-},{"../../plots/plots":320,"./helpers":238}],238:[function(require,module,exports){
++},{"../../plots/plots":321,"./helpers":239}],239:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49571,7 +50871,10 @@ exports.isReversed = function isReversed(legendLayout) {
+     return (legendLayout.traceorder || '').indexOf('reversed') !== -1;
+ };
+ 
+-},{"../../plots/plots":320}],239:[function(require,module,exports){
++exports.isHorizontalColumn = function isReversed(legendLayout) {
++    return legendLayout.horizontalspacing === 'column';
++};
++},{"../../plots/plots":321}],240:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49594,7 +50897,7 @@ legend.draw = require('./draw');
+ 
+ legend.style = require('./style');
+ 
+-},{"./attributes":233,"./defaults":235,"./draw":236,"./style":240}],240:[function(require,module,exports){
++},{"./attributes":234,"./defaults":236,"./draw":237,"./style":241}],241:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -49816,7 +51119,7 @@ function stylePies(d) {
+     if(pts.size()) pts.call(stylePie, d[0], trace);
+ }
+ 
+-},{"../../lib":272,"../../plots/plots":320,"../../traces/pie/style_one":334,"../../traces/scatter/subtypes":355,"../color":196,"../drawing":219,"d3":13}],241:[function(require,module,exports){
++},{"../../lib":273,"../../plots/plots":321,"../../traces/pie/style_one":335,"../../traces/scatter/subtypes":356,"../color":197,"../drawing":220,"d3":8}],242:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50324,7 +51627,7 @@ modeBarButtons.resetViews = {
+     }
+ };
+ 
+-},{"../../../build/ploticon":2,"../../lib":272,"../../plotly":290,"../../snapshot/download":328}],242:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":273,"../../plotly":291,"../../snapshot/download":329}],243:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50614,7 +51917,7 @@ function createModeBar(gd, buttons) {
+ 
+ module.exports = createModeBar;
+ 
+-},{"../../../build/ploticon":2,"../../lib":272,"d3":13}],243:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":273,"d3":8}],244:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50842,7 +52145,7 @@ function fillCustomButton(customButtons) {
+     return customButtons;
+ }
+ 
+-},{"../../plotly":290,"../../traces/scatter/subtypes":355,"./":242,"./buttons":241}],244:[function(require,module,exports){
++},{"../../plotly":291,"../../traces/scatter/subtypes":356,"./":243,"./buttons":242}],245:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50931,7 +52234,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":271,"../../plots/font_attributes":311,"../color/attributes":195,"./button_attributes":245}],245:[function(require,module,exports){
++},{"../../lib/extend":272,"../../plots/font_attributes":312,"../color/attributes":196,"./button_attributes":246}],246:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -50972,7 +52275,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],246:[function(require,module,exports){
++},{}],247:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51001,7 +52304,7 @@ module.exports = {
+     darkAmount: 10
+ };
+ 
+-},{}],247:[function(require,module,exports){
++},{}],248:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51093,7 +52396,7 @@ function getPosDflt(containerOut, layout, counterAxes) {
+     return [containerOut.domain[0], posY + constants.yPad];
+ }
+ 
+-},{"../../lib":272,"../color":196,"./attributes":244,"./button_attributes":245,"./constants":246}],248:[function(require,module,exports){
++},{"../../lib":273,"../color":197,"./attributes":245,"./button_attributes":246,"./constants":247}],249:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51368,7 +52671,7 @@ function reposition(gd, buttons, opts, axName) {
+     });
+ }
+ 
+-},{"../../lib/svg_text_utils":283,"../../plotly":290,"../../plots/cartesian/axis_ids":295,"../../plots/plots":320,"../color":196,"../drawing":219,"../legend/anchor_utils":232,"./constants":246,"./get_update_object":249,"d3":13}],249:[function(require,module,exports){
++},{"../../lib/svg_text_utils":284,"../../plotly":291,"../../plots/cartesian/axis_ids":296,"../../plots/plots":321,"../color":197,"../drawing":220,"../legend/anchor_utils":233,"./constants":247,"./get_update_object":250,"d3":8}],250:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51426,7 +52729,7 @@ function getXRange(axisLayout, buttonLayout) {
+     return [range0, range1];
+ }
+ 
+-},{"d3":13}],250:[function(require,module,exports){
++},{"d3":8}],251:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51444,7 +52747,7 @@ exports.supplyLayoutDefaults = require('./defaults');
+ 
+ exports.draw = require('./draw');
+ 
+-},{"./attributes":244,"./defaults":247,"./draw":248}],251:[function(require,module,exports){
++},{"./attributes":245,"./defaults":248,"./draw":249}],252:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51502,7 +52805,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../color/attributes":195}],252:[function(require,module,exports){
++},{"../color/attributes":196}],253:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51798,7 +53101,7 @@ module.exports = function createSlider(gd) {
+         });
+ };
+ 
+-},{"../../constants/xmlns_namespaces":265,"../../lib":272,"../../plotly":290,"../../plots/cartesian/axes":293,"./helpers":254,"./range_plot":256}],253:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":266,"../../lib":273,"../../plotly":291,"../../plots/cartesian/axes":294,"./helpers":255,"./range_plot":257}],254:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51851,7 +53154,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, axName, coun
+     }
+ };
+ 
+-},{"../../lib":272,"./attributes":251}],254:[function(require,module,exports){
++},{"../../lib":273,"./attributes":252}],255:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51877,7 +53180,7 @@ exports.appendChildren = function appendChildren(el, children) {
+     }
+ };
+ 
+-},{}],255:[function(require,module,exports){
++},{}],256:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -51934,7 +53237,7 @@ function draw(gd) {
+     });
+ }
+ 
+-},{"../../plots/plots":320,"./create_slider":252,"./defaults":253}],256:[function(require,module,exports){
++},{"../../plots/plots":321,"./create_slider":253,"./defaults":254}],257:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -52115,7 +53418,7 @@ function makeScatter(trace, pointPairs, w, h) {
+     return [line, markers, fill];
+ }
+ 
+-},{"../../constants/xmlns_namespaces":265,"../../lib":272,"../drawing":219,"../drawing/symbol_defs":220,"./helpers":254,"d3":13}],257:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":266,"../../lib":273,"../drawing":220,"../drawing/symbol_defs":221,"./helpers":255,"d3":8}],258:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -52206,7 +53509,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":271,"../../traces/scatter/attributes":336,"../annotations/attributes":193}],258:[function(require,module,exports){
++},{"../../lib/extend":272,"../../traces/scatter/attributes":337,"../annotations/attributes":194}],259:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -52996,7 +54299,7 @@ function shapeBounds(ax, v0, v1, path, paramsToUse) {
+     if(max >= min) return [min, max];
+ }
+ 
+-},{"../../lib":272,"../../lib/setcursor":281,"../../plotly":290,"../../plots/cartesian/axes":293,"../color":196,"../dragelement":217,"../drawing":219,"./attributes":257,"fast-isnumeric":15}],259:[function(require,module,exports){
++},{"../../lib":273,"../../lib/setcursor":282,"../../plotly":291,"../../plots/cartesian/axes":294,"../color":197,"../dragelement":218,"../drawing":220,"./attributes":258,"fast-isnumeric":11}],260:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53226,7 +54529,7 @@ Titles.draw = function(gd, titleClass, options) {
+     el.classed('js-placeholder', isplaceholder);
+ };
+ 
+-},{"../../lib":272,"../../lib/svg_text_utils":283,"../../plotly":290,"../../plots/plots":320,"../color":196,"../drawing":219,"d3":13,"fast-isnumeric":15}],260:[function(require,module,exports){
++},{"../../lib":273,"../../lib/svg_text_utils":284,"../../plotly":291,"../../plots/plots":321,"../color":197,"../drawing":220,"d3":8,"fast-isnumeric":11}],261:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53344,7 +54647,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":271,"../../plots/font_attributes":311,"../color/attributes":195}],261:[function(require,module,exports){
++},{"../../lib/extend":272,"../../plots/font_attributes":312,"../color/attributes":196}],262:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53419,7 +54722,7 @@ module.exports = {
+     hoverColor: '#F4FAFF'
+ };
+ 
+-},{}],262:[function(require,module,exports){
++},{}],263:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53515,7 +54818,7 @@ function buttonsDefaults(menuIn, menuOut) {
+     return buttonsOut;
+ }
+ 
+-},{"../../lib":272,"./attributes":260,"./constants":261}],263:[function(require,module,exports){
++},{"../../lib":273,"./attributes":261,"./constants":262}],264:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53974,7 +55277,7 @@ function clearPushMargins(gd) {
+     }
+ }
+ 
+-},{"../../lib":272,"../../lib/svg_text_utils":283,"../../plotly":290,"../../plots/plots":320,"../color":196,"../drawing":219,"../legend/anchor_utils":232,"./constants":261,"d3":13}],264:[function(require,module,exports){
++},{"../../lib":273,"../../lib/svg_text_utils":284,"../../plotly":291,"../../plots/plots":321,"../color":197,"../drawing":220,"../legend/anchor_utils":233,"./constants":262,"d3":8}],265:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -53992,7 +55295,7 @@ exports.supplyLayoutDefaults = require('./defaults');
+ 
+ exports.draw = require('./draw');
+ 
+-},{"./attributes":260,"./defaults":262,"./draw":263}],265:[function(require,module,exports){
++},{"./attributes":261,"./defaults":263,"./draw":264}],266:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54016,7 +55319,7 @@ exports.svgAttrs = {
+     'xmlns:xlink': exports.xlink
+ };
+ 
+-},{}],266:[function(require,module,exports){
++},{}],267:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54067,7 +55370,7 @@ exports.Queue = Plotly.Queue;
+ // export d3 used in the bundle
+ exports.d3 = require('d3');
+ 
+-},{"../build/ploticon":2,"./plot_api/set_plot_config":287,"./plot_api/to_image":288,"./plot_api/validate":289,"./plotly":290,"./snapshot/download":328,"d3":13}],267:[function(require,module,exports){
++},{"../build/ploticon":2,"./plot_api/set_plot_config":288,"./plot_api/to_image":289,"./plot_api/validate":290,"./plotly":291,"./snapshot/download":329,"d3":8}],268:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54100,7 +55403,7 @@ if(typeof MathJax !== 'undefined') {
+     exports.MathJax = false;
+ }
+ 
+-},{}],268:[function(require,module,exports){
++},{}],269:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54410,7 +55713,7 @@ exports.validate = function(value, opts) {
+     return out !== failed;
+ };
+ 
+-},{"../components/colorscale/get_scale":208,"../components/colorscale/scales":214,"./nested_property":276,"fast-isnumeric":15,"tinycolor2":191}],269:[function(require,module,exports){
++},{"../components/colorscale/get_scale":209,"../components/colorscale/scales":215,"./nested_property":277,"fast-isnumeric":11,"tinycolor2":179}],270:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54749,7 +56052,7 @@ exports.parseDate = function(v) {
+     return out;
+ };
+ 
+-},{"../lib":272,"d3":13,"fast-isnumeric":15}],270:[function(require,module,exports){
++},{"../lib":273,"d3":8,"fast-isnumeric":11}],271:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54883,7 +56186,7 @@ var Events = {
+ 
+ module.exports = Events;
+ 
+-},{"events":7}],271:[function(require,module,exports){
++},{"events":10}],272:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -54997,7 +56300,7 @@ function _extend(inputs, isDeep, keepAllKeys, noArrayCopies) {
+     return target;
+ }
+ 
+-},{"./is_plain_object.js":273}],272:[function(require,module,exports){
++},{"./is_plain_object.js":274}],273:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -55617,7 +56920,7 @@ lib.numSeparate = function(value, separators) {
+     return x1 + x2;
+ };
+ 
+-},{"./coerce":268,"./dates":269,"./extend":271,"./is_plain_object":273,"./loggers":274,"./matrix":275,"./nested_property":276,"./notifier":277,"./search":280,"./stats":282,"d3":13}],273:[function(require,module,exports){
++},{"./coerce":269,"./dates":270,"./extend":272,"./is_plain_object":274,"./loggers":275,"./matrix":276,"./nested_property":277,"./notifier":278,"./search":281,"./stats":283,"d3":8}],274:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -55646,7 +56949,7 @@ module.exports = function isPlainObject(obj) {
+     );
+ };
+ 
+-},{}],274:[function(require,module,exports){
++},{}],275:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -55713,7 +57016,7 @@ loggers.error = function() {
+ };
+ /* eslint-enable no-console */
+ 
+-},{"../plot_api/plot_config":285}],275:[function(require,module,exports){
++},{"../plot_api/plot_config":286}],276:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -55823,7 +57126,7 @@ exports.apply2DTransform2 = function(transform) {
+     };
+ };
+ 
+-},{}],276:[function(require,module,exports){
++},{}],277:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56079,7 +57382,7 @@ function badContainer(container, propStr, propParts) {
+     };
+ }
+ 
+-},{"fast-isnumeric":15}],277:[function(require,module,exports){
++},{"fast-isnumeric":11}],278:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56156,7 +57459,7 @@ module.exports = function(text, displayLength) {
+         });
+ };
+ 
+-},{"d3":13,"fast-isnumeric":15}],278:[function(require,module,exports){
++},{"d3":8,"fast-isnumeric":11}],279:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56396,7 +57699,7 @@ polygon.filter = function filter(pts, tolerance) {
+     };
+ };
+ 
+-},{"./matrix":275}],279:[function(require,module,exports){
++},{"./matrix":276}],280:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56607,7 +57910,7 @@ queue.plotDo = function(gd, func, args) {
+ 
+ module.exports = queue;
+ 
+-},{"../lib":272,"../plot_api/plot_config":285}],280:[function(require,module,exports){
++},{"../lib":273,"../plot_api/plot_config":286}],281:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56719,7 +58022,7 @@ exports.roundUp = function(val, arrayIn, reverse) {
+     return arrayIn[low];
+ };
+ 
+-},{"../lib":272,"fast-isnumeric":15}],281:[function(require,module,exports){
++},{"../lib":273,"fast-isnumeric":11}],282:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56742,7 +58045,7 @@ module.exports = function setCursor(el3, csr) {
+     if(csr) el3.classed('cursor-' + csr, true);
+ };
+ 
+-},{}],282:[function(require,module,exports){
++},{}],283:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -56838,7 +58141,7 @@ exports.interp = function(arr, n) {
+     return frac * arr[Math.ceil(n)] + (1 - frac) * arr[Math.floor(n)];
+ };
+ 
+-},{"fast-isnumeric":15}],283:[function(require,module,exports){
++},{"fast-isnumeric":11}],284:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -57339,7 +58642,7 @@ util.makeEditable = function(context, _delegate, options) {
+     return d3.rebind(this, dispatch, 'on');
+ };
+ 
+-},{"../constants/xmlns_namespaces":265,"../lib":272,"../plotly":290,"d3":13}],284:[function(require,module,exports){
++},{"../constants/xmlns_namespaces":266,"../lib":273,"../plotly":291,"d3":8}],285:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -60454,7 +61757,7 @@ function drawMainTitle(gd) {
+     });
+ }
+ 
+-},{"../components/color":196,"../components/drawing":219,"../components/errorbars":225,"../components/images":231,"../components/legend":239,"../components/modebar/manage":243,"../components/rangeselector":250,"../components/rangeslider":255,"../components/shapes":258,"../components/titles":259,"../components/updatemenus":264,"../constants/xmlns_namespaces":265,"../lib":272,"../lib/events":270,"../lib/queue":279,"../plotly":290,"../plots/cartesian/graph_interact":300,"../plots/plots":320,"d3":13,"fast-isnumeric":15,"gl-mat4/fromQuat":16}],285:[function(require,module,exports){
++},{"../components/color":197,"../components/drawing":220,"../components/errorbars":226,"../components/images":232,"../components/legend":240,"../components/modebar/manage":244,"../components/rangeselector":251,"../components/rangeslider":256,"../components/shapes":259,"../components/titles":260,"../components/updatemenus":265,"../constants/xmlns_namespaces":266,"../lib":273,"../lib/events":271,"../lib/queue":280,"../plotly":291,"../plots/cartesian/graph_interact":301,"../plots/plots":321,"d3":8,"fast-isnumeric":11,"gl-mat4/fromQuat":23}],286:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -60563,7 +61866,7 @@ function defaultSetBackground(gd, bgColor) {
+     catch(e) { Lib.error(e); }
+ }
+ 
+-},{"../lib":272}],286:[function(require,module,exports){
++},{"../lib":273}],287:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -60903,7 +62206,7 @@ function handleLinkedToArray(layoutAttributes) {
+     PlotSchema.crawl(layoutAttributes, callback);
+ }
+ 
+-},{"../lib":272,"../plotly":290,"../plots/plots":320,"../plots/polar/area_attributes":321,"../plots/polar/axis_attributes":322}],287:[function(require,module,exports){
++},{"../lib":273,"../plotly":291,"../plots/plots":321,"../plots/polar/area_attributes":322,"../plots/polar/axis_attributes":323}],288:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -60929,7 +62232,7 @@ module.exports = function setPlotConfig(configObj) {
+     return Lib.extendFlat(Plotly.defaultConfig, configObj);
+ };
+ 
+-},{"../lib":272,"../plotly":290}],288:[function(require,module,exports){
++},{"../lib":273,"../plotly":291}],289:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -61042,7 +62345,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":272,"../plotly":290,"../snapshot":330,"fast-isnumeric":15}],289:[function(require,module,exports){
++},{"../lib":273,"../plotly":291,"../snapshot":331,"fast-isnumeric":11}],290:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -61412,7 +62715,7 @@ function convertPathToAttributeString(path) {
+     return astr;
+ }
+ 
+-},{"../lib":272,"../plots/plots":320,"./plot_schema":286}],290:[function(require,module,exports){
++},{"../lib":273,"../plots/plots":321,"./plot_schema":287}],291:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -61530,7 +62833,7 @@ exports.PlotSchema = require('./plot_api/plot_schema');
+ // imaging routines
+ exports.Snapshot = require('./snapshot');
+ 
+-},{"../build/plotcss":1,"./components/annotations":194,"./components/color":196,"./components/colorbar":201,"./components/colorscale":210,"./components/drawing":219,"./components/errorbars":225,"./components/images":231,"./components/legend":239,"./components/modebar":242,"./components/shapes":258,"./components/updatemenus":264,"./fonts/mathjax_config":267,"./lib":272,"./lib/queue":279,"./lib/svg_text_utils":283,"./plot_api/plot_api":284,"./plot_api/plot_config":285,"./plot_api/plot_schema":286,"./plots/cartesian/axes":293,"./plots/cartesian/graph_interact":300,"./plots/plots":320,"./plots/polar/micropolar":323,"./snapshot":330,"./traces/scatter":346,"es6-promise":14}],291:[function(require,module,exports){
++},{"../build/plotcss":1,"./components/annotations":195,"./components/color":197,"./components/colorbar":202,"./components/colorscale":211,"./components/drawing":220,"./components/errorbars":226,"./components/images":232,"./components/legend":240,"./components/modebar":243,"./components/shapes":259,"./components/updatemenus":265,"./fonts/mathjax_config":268,"./lib":273,"./lib/queue":280,"./lib/svg_text_utils":284,"./plot_api/plot_api":285,"./plot_api/plot_config":286,"./plot_api/plot_schema":287,"./plots/cartesian/axes":294,"./plots/cartesian/graph_interact":301,"./plots/plots":321,"./plots/polar/micropolar":324,"./snapshot":331,"./traces/scatter":347,"es6-promise":9}],292:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -61611,7 +62914,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],292:[function(require,module,exports){
++},{}],293:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -61638,7 +62941,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],293:[function(require,module,exports){
++},{}],294:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -61813,14 +63116,27 @@ axes.getAutoRange = function(ax) {
+     }
+ 
+     if(minmin === maxmax) {
+-        newRange = axReverse ?
+-            [minmin + 1, ax.rangemode !== 'normal' ? 0 : minmin - 1] :
+-            [ax.rangemode !== 'normal' ? 0 : minmin - 1, minmin + 1];
++        var lower = minmin - 1;
++        var upper = minmin + 1;
++        if(ax.rangemode === 'tozero') {
++            newRange = minmin < 0 ? [lower, 0] : [0, upper];
++        }
++        else if(ax.rangemode === 'nonnegative') {
++            newRange = [Math.max(0, lower), Math.max(0, upper)];
++        }
++        else {
++            newRange = [lower, upper];
++        }
+     }
+     else if(mbest) {
+         if(ax.type === 'linear' || ax.type === '-') {
+-            if(ax.rangemode === 'tozero' && minbest.val >= 0) {
+-                minbest = {val: 0, pad: 0};
++            if(ax.rangemode === 'tozero') {
++                if(minbest.val >= 0) {
++                    minbest = {val: 0, pad: 0};
++                }
++                if(maxbest.val <= 0) {
++                    maxbest = {val: 0, pad: 0};
++                }
+             }
+             else if(ax.rangemode === 'nonnegative') {
+                 if(minbest.val - mbest * minbest.pad < 0) {
+@@ -61834,22 +63150,39 @@ axes.getAutoRange = function(ax) {
+             // in case it changed again...
+             mbest = (maxbest.val - minbest.val) /
+                 (ax._length - minbest.pad - maxbest.pad);
++
+         }
+ 
+         newRange = [
+             minbest.val - mbest * minbest.pad,
+             maxbest.val + mbest * maxbest.pad
+         ];
++    }
+ 
+-        // don't let axis have zero size
+-        if(newRange[0] === newRange[1]) {
++    // don't let axis have zero size, while still respecting tozero and nonnegative
++    if(newRange[0] === newRange[1]) {
++        if(ax.rangemode === 'tozero') {
++            if(newRange[0] < 0) {
++                newRange = [newRange[0], 0];
++            }
++            else if(newRange[0] > 0) {
++                newRange = [0, newRange[0]];
++            }
++            else {
++                newRange = [0, 1];
++            }
++        }
++        else {
+             newRange = [newRange[0] - 1, newRange[0] + 1];
++            if(ax.rangemode === 'nonnegative') {
++                newRange[0] = Math.max(0, newRange[0]);
++            }
+         }
++    }
+ 
+-        // maintain reversal
+-        if(axReverse) {
+-            newRange.reverse();
+-        }
++    // maintain reversal
++    if(axReverse) {
++        newRange.reverse();
+     }
+ 
+     return newRange;
+@@ -63632,7 +64965,7 @@ function swapAxisAttrs(layout, key, xFullAxes, yFullAxes) {
+ // rather than built-in % which gives a negative value for negative v
+ function mod(v, d) { return ((v % d) + d) % d; }
+ 
+-},{"../../components/color":196,"../../components/drawing":219,"../../components/titles":259,"../../lib":272,"../../lib/svg_text_utils":283,"../../plotly":290,"./axis_ids":295,"./layout_attributes":302,"./layout_defaults":303,"./set_convert":307,"d3":13,"fast-isnumeric":15}],294:[function(require,module,exports){
++},{"../../components/color":197,"../../components/drawing":220,"../../components/titles":260,"../../lib":273,"../../lib/svg_text_utils":284,"../../plotly":291,"./axis_ids":296,"./layout_attributes":303,"./layout_defaults":304,"./set_convert":308,"d3":8,"fast-isnumeric":11}],295:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -63915,7 +65248,7 @@ function category(a) {
+     return curvecats > curvenums * 2;
+ }
+ 
+-},{"../../components/color/attributes":195,"../../lib":272,"../plots":320,"./axis_ids":295,"./category_order_defaults":296,"./clean_datum":297,"./layout_attributes":302,"./ordered_categories":304,"./set_convert":307,"./tick_label_defaults":308,"./tick_mark_defaults":309,"./tick_value_defaults":310,"fast-isnumeric":15,"tinycolor2":191}],295:[function(require,module,exports){
++},{"../../components/color/attributes":196,"../../lib":273,"../plots":321,"./axis_ids":296,"./category_order_defaults":297,"./clean_datum":298,"./layout_attributes":303,"./ordered_categories":305,"./set_convert":308,"./tick_label_defaults":309,"./tick_mark_defaults":310,"./tick_value_defaults":311,"fast-isnumeric":11,"tinycolor2":179}],296:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64036,7 +65369,7 @@ exports.getFromTrace = function(gd, fullTrace, type) {
+     return ax;
+ };
+ 
+-},{"../../lib":272,"../plots":320,"./constants":298}],296:[function(require,module,exports){
++},{"../../lib":273,"../plots":321,"./constants":299}],297:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64070,7 +65403,7 @@ module.exports = function handleCategoryOrderDefaults(containerIn, containerOut,
+     }
+ };
+ 
+-},{}],297:[function(require,module,exports){
++},{}],298:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64109,7 +65442,7 @@ module.exports = function cleanDatum(c) {
+     return c;
+ };
+ 
+-},{"../../lib":272,"fast-isnumeric":15}],298:[function(require,module,exports){
++},{"../../lib":273,"fast-isnumeric":11}],299:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64187,7 +65520,7 @@ module.exports = {
+     REDRAWDELAY: 50
+ };
+ 
+-},{}],299:[function(require,module,exports){
++},{}],300:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -64876,7 +66209,7 @@ function isSelectOrLasso(dragmode) {
+     return modes.indexOf(dragmode) !== -1;
+ }
+ 
+-},{"../../components/color":196,"../../components/dragelement":217,"../../components/drawing":219,"../../lib":272,"../../lib/setcursor":281,"../../lib/svg_text_utils":283,"../../plotly":290,"./axes":293,"./constants":298,"./select":306,"d3":13,"tinycolor2":191}],300:[function(require,module,exports){
++},{"../../components/color":197,"../../components/dragelement":218,"../../components/drawing":220,"../../lib":273,"../../lib/setcursor":282,"../../lib/svg_text_utils":284,"../../plotly":291,"./axes":294,"./constants":299,"./select":307,"d3":8,"tinycolor2":179}],301:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66218,7 +67551,7 @@ fx.inbox = function(v0, v1) {
+     return Infinity;
+ };
+ 
+-},{"../../components/color":196,"../../components/dragelement":217,"../../components/drawing":219,"../../lib":272,"../../lib/events":270,"../../lib/svg_text_utils":283,"./axes":293,"./constants":298,"./dragbox":299,"d3":13,"fast-isnumeric":15,"tinycolor2":191}],301:[function(require,module,exports){
++},{"../../components/color":197,"../../components/dragelement":218,"../../components/drawing":220,"../../lib":273,"../../lib/events":271,"../../lib/svg_text_utils":284,"./axes":294,"./constants":299,"./dragbox":300,"d3":8,"fast-isnumeric":11,"tinycolor2":179}],302:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66305,7 +67638,7 @@ exports.plot = function(gd) {
+     }
+ };
+ 
+-},{"../plots":320,"./attributes":292,"./constants":298}],302:[function(require,module,exports){
++},{"../plots":321,"./attributes":293,"./constants":299}],303:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66650,7 +67983,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/color/attributes":195,"../../components/rangeselector/attributes":244,"../../components/rangeslider/attributes":251,"../../lib/extend":271,"../font_attributes":311,"./constants":298}],303:[function(require,module,exports){
++},{"../../components/color/attributes":196,"../../components/rangeselector/attributes":245,"../../components/rangeslider/attributes":252,"../../lib/extend":272,"../font_attributes":312,"./constants":299}],304:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66823,7 +68156,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
+     });
+ };
+ 
+-},{"../../components/color":196,"../../components/rangeselector":250,"../../components/rangeslider":255,"../../lib":272,"../plots":320,"./axis_defaults":294,"./axis_ids":295,"./constants":298,"./layout_attributes":302,"./position_defaults":305}],304:[function(require,module,exports){
++},{"../../components/color":197,"../../components/rangeselector":251,"../../components/rangeslider":256,"../../lib":273,"../plots":321,"./axis_defaults":295,"./axis_ids":296,"./constants":299,"./layout_attributes":303,"./position_defaults":306}],305:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66902,7 +68235,7 @@ module.exports = function orderedCategories(axisLetter, categoryorder, categorya
+     }
+ };
+ 
+-},{"d3":13}],305:[function(require,module,exports){
++},{"d3":8}],306:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -66967,7 +68300,7 @@ module.exports = function handlePositionDefaults(containerIn, containerOut, coer
+     return containerOut;
+ };
+ 
+-},{"../../lib":272,"fast-isnumeric":15}],306:[function(require,module,exports){
++},{"../../lib":273,"fast-isnumeric":11}],307:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67167,7 +68500,7 @@ module.exports = function prepSelect(e, startX, startY, dragOptions, mode) {
+     };
+ };
+ 
+-},{"../../components/color":196,"../../lib/polygon":278,"./axes":293,"./constants":298}],307:[function(require,module,exports){
++},{"../../components/color":197,"../../lib/polygon":279,"./axes":294,"./constants":299}],308:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67411,7 +68744,7 @@ module.exports = function setConvert(ax) {
+     ax._forceTick0 = null;
+ };
+ 
+-},{"../../lib":272,"./axis_ids":295,"./clean_datum":297,"./constants":298,"d3":13,"fast-isnumeric":15}],308:[function(require,module,exports){
++},{"../../lib":273,"./axis_ids":296,"./clean_datum":298,"./constants":299,"d3":8,"fast-isnumeric":11}],309:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67494,7 +68827,7 @@ function getShowAttrDflt(containerIn) {
+     }
+ }
+ 
+-},{"../../lib":272}],309:[function(require,module,exports){
++},{"../../lib":273}],310:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67527,7 +68860,7 @@ module.exports = function handleTickDefaults(containerIn, containerOut, coerce,
+     }
+ };
+ 
+-},{"../../lib":272,"./layout_attributes":302}],310:[function(require,module,exports){
++},{"../../lib":273,"./layout_attributes":303}],311:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67568,7 +68901,7 @@ module.exports = function handleTickValueDefaults(containerIn, containerOut, coe
+     }
+ };
+ 
+-},{"fast-isnumeric":15}],311:[function(require,module,exports){
++},{"fast-isnumeric":11}],312:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67599,7 +68932,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],312:[function(require,module,exports){
++},{}],313:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67764,7 +69097,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../components/color/attributes":195,"../plotly":290,"./font_attributes":311}],313:[function(require,module,exports){
++},{"../components/color/attributes":196,"../plotly":291,"./font_attributes":312}],314:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67794,7 +69127,7 @@ module.exports = {
+     mapOnErrorMsg: 'Mapbox error.'
+ };
+ 
+-},{}],314:[function(require,module,exports){
++},{}],315:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -67868,7 +69201,7 @@ module.exports = function convertTextOpts(textposition, iconSize) {
+     return { anchor: anchor, offset: offset };
+ };
+ 
+-},{"../../lib":272}],315:[function(require,module,exports){
++},{"../../lib":273}],316:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -68021,7 +69354,7 @@ function findAccessToken(gd, mapboxIds) {
+     return accessToken;
+ }
+ 
+-},{"../../constants/xmlns_namespaces":265,"../plots":320,"./constants":313,"./layout_attributes":317,"./layout_defaults":318,"./mapbox":319,"mapbox-gl":30}],316:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":266,"../plots":321,"./constants":314,"./layout_attributes":318,"./layout_defaults":319,"./mapbox":320,"mapbox-gl":80}],317:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -68246,7 +69579,7 @@ module.exports = function createMapboxLayer(mapbox, index, opts) {
+     return mapboxLayer;
+ };
+ 
+-},{"../../lib":272,"./convert_text_opts":314}],317:[function(require,module,exports){
++},{"../../lib":273,"./convert_text_opts":315}],318:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -68449,7 +69782,7 @@ module.exports = {
+ 
+ };
+ 
+-},{"../../components/color":196,"../../lib":272,"../../traces/scatter/attributes":336,"../font_attributes":311}],318:[function(require,module,exports){
++},{"../../components/color":197,"../../lib":273,"../../traces/scatter/attributes":337,"../font_attributes":312}],319:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -68545,7 +69878,7 @@ function handleLayerDefaults(containerIn, containerOut) {
+     }
+ }
+ 
+-},{"../../lib":272,"../subplot_defaults":326,"./layout_attributes":317}],319:[function(require,module,exports){
++},{"../../lib":273,"../subplot_defaults":327,"./layout_attributes":318}],320:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -68983,7 +70316,7 @@ function convertCenter(center) {
+     return [center.lon, center.lat];
+ }
+ 
+-},{"../../lib":272,"../cartesian/graph_interact":300,"./constants":313,"./layers":316,"./layout_attributes":317,"mapbox-gl":30}],320:[function(require,module,exports){
++},{"../../lib":273,"../cartesian/graph_interact":301,"./constants":314,"./layers":317,"./layout_attributes":318,"mapbox-gl":80}],321:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70174,7 +71507,7 @@ plots.graphJson = function(gd, dataonly, mode, output, useDefaults) {
+     return (output === 'object') ? obj : JSON.stringify(obj);
+ };
+ 
+-},{"../components/color":196,"../lib":272,"../plotly":290,"./attributes":291,"./font_attributes":311,"./layout_attributes":312,"d3":13,"fast-isnumeric":15}],321:[function(require,module,exports){
++},{"../components/color":197,"../lib":273,"../plotly":291,"./attributes":292,"./font_attributes":312,"./layout_attributes":313,"d3":8,"fast-isnumeric":11}],322:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70199,7 +71532,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../traces/scatter/attributes":336}],322:[function(require,module,exports){
++},{"../../traces/scatter/attributes":337}],323:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -70314,7 +71647,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":271,"../cartesian/layout_attributes":302}],323:[function(require,module,exports){
++},{"../../lib/extend":272,"../cartesian/layout_attributes":303}],324:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -71737,7 +73070,7 @@ var extendDeepAll = Plotly.Lib.extendDeepAll;
+     return exports;
+ };
+ 
+-},{"../../plotly":290,"./micropolar_manager":324,"d3":13}],324:[function(require,module,exports){
++},{"../../plotly":291,"./micropolar_manager":325,"d3":8}],325:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -71820,7 +73153,7 @@ manager.fillLayout = function(_gd) {
+     _gd._fullLayout = extendDeepAll(dflts, _gd.layout);
+ };
+ 
+-},{"../../plotly":290,"./undo_manager":325,"d3":13}],325:[function(require,module,exports){
++},{"../../plotly":291,"./undo_manager":326,"d3":8}],326:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -71886,7 +73219,7 @@ module.exports = function UndoManager() {
+     };
+ };
+ 
+-},{}],326:[function(require,module,exports){
++},{}],327:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -71961,7 +73294,7 @@ module.exports = function handleSubplotDefaults(layoutIn, layoutOut, fullData, o
+     }
+ };
+ 
+-},{"../lib":272,"./plots":320}],327:[function(require,module,exports){
++},{"../lib":273,"./plots":321}],328:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72117,7 +73450,7 @@ module.exports = function clonePlot(graphObj, options) {
+     return plotTile;
+ };
+ 
+-},{"../plotly":290}],328:[function(require,module,exports){
++},{"../plotly":291}],329:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72183,7 +73516,7 @@ function downloadImage(gd, opts) {
+ 
+ module.exports = downloadImage;
+ 
+-},{"../lib":272,"../plot_api/to_image":288,"./filesaver":329}],329:[function(require,module,exports){
++},{"../lib":273,"../plot_api/to_image":289,"./filesaver":330}],330:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72251,7 +73584,7 @@ var fileSaver = function(url, name) {
+ 
+ module.exports = fileSaver;
+ 
+-},{}],330:[function(require,module,exports){
++},{}],331:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72296,7 +73629,7 @@ var Snapshot = {
+ 
+ module.exports = Snapshot;
+ 
+-},{"./cloneplot":327,"./download":328,"./svgtoimg":331,"./toimage":332,"./tosvg":333}],331:[function(require,module,exports){
++},{"./cloneplot":328,"./download":329,"./svgtoimg":332,"./toimage":333,"./tosvg":334}],332:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72427,7 +73760,7 @@ function svgToImg(opts) {
+ 
+ module.exports = svgToImg;
+ 
+-},{"../lib":272,"events":7}],332:[function(require,module,exports){
++},{"../lib":273,"events":10}],333:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72506,7 +73839,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":272,"../plotly":290,"events":7}],333:[function(require,module,exports){
++},{"../lib":273,"../plotly":291,"events":10}],334:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72618,7 +73951,7 @@ module.exports = function toSVG(gd, format) {
+     return s;
+ };
+ 
+-},{"../components/color":196,"../components/drawing":219,"../constants/xmlns_namespaces":265,"../lib/svg_text_utils":283,"d3":13}],334:[function(require,module,exports){
++},{"../components/color":197,"../components/drawing":220,"../constants/xmlns_namespaces":266,"../lib/svg_text_utils":284,"d3":8}],335:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72645,7 +73978,7 @@ module.exports = function styleOne(s, pt, trace) {
+     .call(Color.stroke, lineColor);
+ };
+ 
+-},{"../../components/color":196}],335:[function(require,module,exports){
++},{"../../components/color":197}],336:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72683,7 +74016,7 @@ module.exports = function arraysToCalcdata(cd) {
+     }
+ };
+ 
+-},{"../../lib":272}],336:[function(require,module,exports){
++},{"../../lib":273}],337:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -72933,7 +74266,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":204,"../../components/drawing":219,"../../lib/extend":271,"./constants":341}],337:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":205,"../../components/drawing":220,"../../lib/extend":272,"./constants":342}],338:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73060,7 +74393,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":272,"../../plots/cartesian/axes":293,"./colorscale_calc":340,"./subtypes":355,"fast-isnumeric":15}],338:[function(require,module,exports){
++},{"../../lib":273,"../../plots/cartesian/axes":294,"./colorscale_calc":341,"./subtypes":356,"fast-isnumeric":11}],339:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73101,7 +74434,7 @@ module.exports = function cleanData(fullData) {
+     }
+ };
+ 
+-},{}],339:[function(require,module,exports){
++},{}],340:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73154,7 +74487,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(marker.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":199,"../../components/colorscale/get_scale":208,"../../lib":272,"../../plots/plots":320,"d3":13,"fast-isnumeric":15}],340:[function(require,module,exports){
++},{"../../components/colorbar/draw":200,"../../components/colorscale/get_scale":209,"../../lib":273,"../../plots/plots":321,"d3":8,"fast-isnumeric":11}],341:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73187,7 +74520,7 @@ module.exports = function calcMarkerColorscale(trace) {
+     }
+ };
+ 
+-},{"../../components/colorscale/calc":203,"../../components/colorscale/has_colorscale":209,"./subtypes":355}],341:[function(require,module,exports){
++},{"../../components/colorscale/calc":204,"../../components/colorscale/has_colorscale":210,"./subtypes":356}],342:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73203,7 +74536,7 @@ module.exports = {
+     PTS_LINESONLY: 20
+ };
+ 
+-},{}],342:[function(require,module,exports){
++},{}],343:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73281,7 +74614,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'y'});
+ };
+ 
+-},{"../../components/errorbars/defaults":224,"../../lib":272,"./attributes":336,"./constants":341,"./fillcolor_defaults":343,"./line_defaults":347,"./line_shape_defaults":349,"./marker_defaults":351,"./subtypes":355,"./text_defaults":356,"./xy_defaults":357}],343:[function(require,module,exports){
++},{"../../components/errorbars/defaults":225,"../../lib":273,"./attributes":337,"./constants":342,"./fillcolor_defaults":344,"./line_defaults":348,"./line_shape_defaults":350,"./marker_defaults":352,"./subtypes":356,"./text_defaults":357,"./xy_defaults":358}],344:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73320,7 +74653,7 @@ module.exports = function fillColorDefaults(traceIn, traceOut, defaultColor, coe
+     ));
+ };
+ 
+-},{"../../components/color":196}],344:[function(require,module,exports){
++},{"../../components/color":197}],345:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73373,7 +74706,7 @@ module.exports = function getTraceColor(trace, di) {
+     }
+ };
+ 
+-},{"../../components/color":196,"./subtypes":355}],345:[function(require,module,exports){
++},{"../../components/color":197,"./subtypes":356}],346:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73542,7 +74875,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     }
+ };
+ 
+-},{"../../components/color":196,"../../components/errorbars":225,"../../lib":272,"../../plots/cartesian/constants":298,"../../plots/cartesian/graph_interact":300,"./get_trace_color":344}],346:[function(require,module,exports){
++},{"../../components/color":197,"../../components/errorbars":226,"../../lib":273,"../../plots/cartesian/constants":299,"../../plots/cartesian/graph_interact":301,"./get_trace_color":345}],347:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73585,7 +74918,7 @@ Scatter.meta = {
+ 
+ module.exports = Scatter;
+ 
+-},{"../../plots/cartesian":301,"./arrays_to_calcdata":335,"./attributes":336,"./calc":337,"./clean_data":338,"./colorbar":339,"./defaults":342,"./hover":345,"./plot":352,"./select":353,"./style":354,"./subtypes":355}],347:[function(require,module,exports){
++},{"../../plots/cartesian":302,"./arrays_to_calcdata":336,"./attributes":337,"./calc":338,"./clean_data":339,"./colorbar":340,"./defaults":343,"./hover":346,"./plot":353,"./select":354,"./style":355,"./subtypes":356}],348:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73618,7 +74951,7 @@ module.exports = function lineDefaults(traceIn, traceOut, defaultColor, layout,
+     coerce('line.dash');
+ };
+ 
+-},{"../../components/colorscale/defaults":206,"../../components/colorscale/has_colorscale":209}],348:[function(require,module,exports){
++},{"../../components/colorscale/defaults":207,"../../components/colorscale/has_colorscale":210}],349:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73787,7 +75120,7 @@ module.exports = function linePoints(d, opts) {
+     return segments;
+ };
+ 
+-},{"../../plots/cartesian/axes":293}],349:[function(require,module,exports){
++},{"../../plots/cartesian/axes":294}],350:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73806,7 +75139,7 @@ module.exports = function handleLineShapeDefaults(traceIn, traceOut, coerce) {
+     if(shape === 'spline') coerce('line.smoothing');
+ };
+ 
+-},{}],350:[function(require,module,exports){
++},{}],351:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73848,7 +75181,7 @@ module.exports = function makeBubbleSizeFn(trace) {
+     };
+ };
+ 
+-},{"fast-isnumeric":15}],351:[function(require,module,exports){
++},{"fast-isnumeric":11}],352:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -73908,7 +75241,7 @@ module.exports = function markerDefaults(traceIn, traceOut, defaultColor, layout
+     }
+ };
+ 
+-},{"../../components/color":196,"../../components/colorscale/defaults":206,"../../components/colorscale/has_colorscale":209,"./subtypes":355}],352:[function(require,module,exports){
++},{"../../components/color":197,"../../components/colorscale/defaults":207,"../../components/colorscale/has_colorscale":210,"./subtypes":356}],353:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -74201,7 +75534,7 @@ function selectMarkers(gd, plotinfo, cdscatter) {
+     });
+ }
+ 
+-},{"../../components/drawing":219,"../../components/errorbars":225,"../../lib":272,"../../lib/polygon":278,"./arrays_to_calcdata":335,"./line_points":348,"./subtypes":355,"d3":13}],353:[function(require,module,exports){
++},{"../../components/drawing":220,"../../components/errorbars":226,"../../lib":273,"../../lib/polygon":279,"./arrays_to_calcdata":336,"./line_points":349,"./subtypes":356,"d3":8}],354:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -74272,7 +75605,7 @@ module.exports = function selectPoints(searchInfo, polygon) {
+     return selection;
+ };
+ 
+-},{"./subtypes":355}],354:[function(require,module,exports){
++},{"./subtypes":356}],355:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -74314,7 +75647,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/drawing":219,"../../components/errorbars":225,"d3":13}],355:[function(require,module,exports){
++},{"../../components/drawing":220,"../../components/errorbars":226,"d3":8}],356:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -74350,7 +75683,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib":272}],356:[function(require,module,exports){
++},{"../../lib":273}],357:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -74371,7 +75704,7 @@ module.exports = function(traceIn, traceOut, layout, coerce) {
+     Lib.coerceFont(coerce, 'textfont', layout.font);
+ };
+ 
+-},{"../../lib":272}],357:[function(require,module,exports){
++},{"../../lib":273}],358:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -74416,7 +75749,7 @@ module.exports = function handleXYDefaults(traceIn, traceOut, coerce) {
+     return len;
+ };
+ 
+-},{}],358:[function(require,module,exports){
++},{}],359:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -74491,7 +75824,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":204,"../../lib/extend":271,"../../plots/attributes":291,"../scatter/attributes":336}],359:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":205,"../../lib/extend":272,"../../plots/attributes":292,"../scatter/attributes":337}],360:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -74590,7 +75923,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":271,"../../plots/attributes":291,"../../plots/mapbox/layout_attributes":317,"../scatter/attributes":336,"../scattergeo/attributes":358}],360:[function(require,module,exports){
++},{"../../lib/extend":272,"../../plots/attributes":292,"../../plots/mapbox/layout_attributes":318,"../scatter/attributes":337,"../scattergeo/attributes":359}],361:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -74687,7 +76020,7 @@ module.exports = function calc(gd, trace) {
+     return calcTrace;
+ };
+ 
+-},{"../../components/colorscale/has_colorscale":209,"../../components/colorscale/make_scale_function":213,"../../lib":272,"../scatter/colorscale_calc":340,"../scatter/make_bubble_size_func":350,"../scatter/subtypes":355,"fast-isnumeric":15}],361:[function(require,module,exports){
++},{"../../components/colorscale/has_colorscale":210,"../../components/colorscale/make_scale_function":214,"../../lib":273,"../scatter/colorscale_calc":341,"../scatter/make_bubble_size_func":351,"../scatter/subtypes":356,"fast-isnumeric":11}],362:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75038,7 +76371,7 @@ function getFillFunc(attr) {
+ 
+ function blankFillFunc() { return ''; }
+ 
+-},{"../../lib":272,"../../plots/mapbox/convert_text_opts":314,"../scatter/subtypes":355}],362:[function(require,module,exports){
++},{"../../lib":273,"../../plots/mapbox/convert_text_opts":315,"../scatter/subtypes":356}],363:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75126,7 +76459,7 @@ function handleLonLatDefaults(traceIn, traceOut, coerce) {
+     return len;
+ }
+ 
+-},{"../../lib":272,"../scatter/attributes":336,"../scatter/fillcolor_defaults":343,"../scatter/line_defaults":347,"../scatter/marker_defaults":351,"../scatter/subtypes":355,"../scatter/text_defaults":356,"./attributes":359}],363:[function(require,module,exports){
++},{"../../lib":273,"../scatter/attributes":337,"../scatter/fillcolor_defaults":344,"../scatter/line_defaults":348,"../scatter/marker_defaults":352,"../scatter/subtypes":356,"../scatter/text_defaults":357,"./attributes":360}],364:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75219,7 +76552,7 @@ function getExtraText(trace, di) {
+     return text.join('<br>');
+ }
+ 
+-},{"../../plots/cartesian/graph_interact":300,"../scatter/get_trace_color":344}],364:[function(require,module,exports){
++},{"../../plots/cartesian/graph_interact":301,"../scatter/get_trace_color":345}],365:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75251,7 +76584,7 @@ ScatterMapbox.meta = {
+ 
+ module.exports = ScatterMapbox;
+ 
+-},{"../../plots/mapbox":315,"../scatter/colorbar":339,"./attributes":359,"./calc":360,"./defaults":362,"./hover":363,"./plot":365}],365:[function(require,module,exports){
++},{"../../plots/mapbox":316,"../scatter/colorbar":340,"./attributes":360,"./calc":361,"./defaults":363,"./hover":364,"./plot":366}],366:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -75383,5 +76716,5 @@ module.exports = function createScatterMapbox(mapbox, calcTrace) {
+     return scatterMapbox;
+ };
+ 
+-},{"./convert":361}]},{},[4])(4)
++},{"./convert":362}]},{},[4])(4)
+ });
+\ No newline at end of file
+diff --git a/dist/plotly-mapbox.min.js b/dist/plotly-mapbox.min.js
+index 14b72f9..a2db51a 100644
+--- a/dist/plotly-mapbox.min.js
++++ b/dist/plotly-mapbox.min.js
+@@ -4,34 +4,35 @@
+ * All rights reserved.
+ * Licensed under the MIT license
+ */
+-!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var e;e="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,e.Plotly=t()}}(function(){var t;return function e(t,n,r){function i(o,s){if(!n[o]){if(!t[o]){var l="function"==typeof require&&require;if(!s&&l)return l(o,!0);if(a)return a(o,!0);var u=new Error("Cannot find module '"+o+"'");throw u.code="MODULE_NOT_FOUND",u}var c=n[o]={exports:{}};t[o][0].call(c.exports,function(e){var n=t[o][1][e];return i(n?n:e)},c,c.exports,e,t,n,r)}return n[o].exports}for(var a="function"==typeof require&&require,o=0;o<r.length;o++)i(r[o]);return i}({1:[function(t,e,n){"use strict";var r=t("../src/plotly"),i={"X,X div":"font-family:'Open Sans', verdana, arial, sans-serif;margin:0;padding:0;","X input,X button":"font-family:'Open Sans', verdana, arial, sans-serif;","X input:focus,X 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m=d.getPaintValueStopZoomLevels(f.paintProperty),g=0;g<m.length&&m[g]<t.zoom;)g++;for(var v=Math.max(0,Math.min(m.length-4,g-2)),y=[],x=0;4>x;x++)y.push(m[Math.min(v+x,m.length-1)]);var _=f.components;if(1===_)p.attributes.push(c.extend({},f,{getValue:o(f,y),isFunction:!0,components:4*_}));else for(var b=0;4>b;b++)p.attributes.push(c.extend({},f,{getValue:o(f,[y[b]]),isFunction:!0,name:f.name+b}));p.uniforms.push(c.extend({},f,{name:"u_"+f.name.slice(2)+"_t",getValue:s(f,v),components:1}))}}}return e}function o(t,e){return function(n,r,i){if(1===e.length)return t.getValue(n,c.extend({},r,{zoom:e[0]}),i);for(var a=[],o=0;o<e.length;o++){var s=e[o];a.push(t.getValue(n,c.extend({},r,{zoom:s}),i)[0])}return a}}function s(t,e){return function(n,r){var i=n.getPaintInterpolationT(t.paintProperty,r.zoom);return[Math.max(0,Math.min(4,i-e))]}}var l=t("feature-filter"),u=t("./buffer"),c=t("../util/util"),f=t("../util/struct_array"),h=t("../render/vertex_array_object");e.exports=r,r.create=function(e){var n={fill:t("./bucket/fill_bucket"),line:t("./bucket/line_bucket"),circle:t("./bucket/circle_bucket"),symbol:t("./bucket/symbol_bucket")};return new n[e.layer.type](e)},r.EXTENT=8192,r.prototype.populateBuffers=function(){this.createArrays(),this.recalculateStyleLayers();for(var t=0;t<this.features.length;t++)this.addFeature(this.features[t]);this.trimArrays()},r.prototype.makeRoomFor=function(t,e){var n=this.arrayGroups[t],r=n.length&&n[n.length-1];if(!r||r.layout.vertex.length+e>65535){var i=this.arrayTypes[t],a=i.layout.vertex,o=i.layout.element,s=i.layout.element2;r={index:n.length,layout:{},paint:{}},r.layout.vertex=new a,o&&(r.layout.element=new o),s&&(r.layout.element2=new s);for(var l=0;l<this.childLayers.length;l++){var u=this.childLayers[l].id,c=i.paint[u];r.paint[u]=new c}n.push(r)}return r},r.prototype.createArrays=function(){this.arrayGroups={},this.arrayTypes={};for(var t in this.programInterfaces){var e=this.programInterfaces[t],n=this.arrayTypes[t]={layout:{},paint:{}};if(this.arrayGroups[t]=[],e.vertexBuffer){var r=new f({members:this.programInterfaces[t].layoutAttributes,alignment:u.VERTEX_ATTRIBUTE_ALIGNMENT});n.layout.vertex=r;var a=this.paintAttributes[t];for(var o in a){var s=new f({members:a[o].attributes,alignment:u.VERTEX_ATTRIBUTE_ALIGNMENT});n.paint[o]=s}}if(e.elementBuffer){var l=i(e.elementBufferComponents);n.layout.element=l}if(e.elementBuffer2){var c=i(e.elementBuffer2Components);n.layout.element2=c}}},r.prototype.destroy=function(t){for(var e in this.bufferGroups)for(var n=this.bufferGroups[e],r=0;r<n.length;r++){var i=n[r];for(var a in i.paint)i.paint[a].destroy(t);for(var o in i.layout)i.layout[o].destroy(t);for(var s in i.vaos)i.vaos[s].destroy(t);for(var l in i.secondVaos)i.secondVaos[l].destroy(t)}},r.prototype.trimArrays=function(){for(var t in this.arrayGroups){var e=this.arrayGroups[t];for(var n in e.paint)e.paint[n].trim();for(var r in e.layout)e.layout[r].trim()}},r.prototype.setUniforms=function(t,e,n,r,i){for(var a=this.paintAttributes[e][r.id].uniforms,o=0;o<a.length;o++){var s=a[o],l=n[s.name];t["uniform"+s.components+"fv"](l,s.getValue(r,i))}},r.prototype.serialize=function(){return{layerId:this.layer.id,zoom:this.zoom,arrays:c.mapObject(this.arrayGroups,function(t){return t.map(function(t){return c.mapObject(t,function(t){return c.mapObject(t,function(t){return t.serialize()})})})}),arrayTypes:c.mapObject(this.arrayTypes,function(t){return c.mapObject(t,function(t){return c.mapObject(t,function(t){
+-return t.serialize()})})}),childLayerIds:this.childLayers.map(function(t){return t.id})}},r.prototype.createFilter=function(){this.filter||(this.filter=l(this.layer.filter))};var d={lastIntegerZoom:1/0,lastIntegerZoomTime:0,lastZoom:0};r.prototype.recalculateStyleLayers=function(){for(var t=0;t<this.childLayers.length;t++)this.childLayers[t].recalculate(this.zoom,d)},r.prototype.getProgramMacros=function(t,e){for(var n=[],r=this.paintAttributes[t][e.id].attributes,i=0;i<r.length;i++){var a=r[i];n.push("ATTRIBUTE_"+(a.isFunction?"ZOOM_FUNCTION_":"")+a.name.toUpperCase())}return n},r.prototype.addPaintAttributes=function(t,e,n,r,i){for(var a=0;a<this.childLayers.length;a++)for(var o=this.childLayers[a],s=this.arrayGroups[t],l=r.index;l<s.length;l++){var u=s[l],c=u.layout.vertex.length,f=u.paint[o.id];f.resize(c);for(var h=this.paintAttributes[t][o.id].attributes,d=0;d<h.length;d++)for(var p=h[d],m=p.getValue(o,e,n),g=p.multiplier||1,v=p.components||1,y=i;c>y;y++)for(var x=f.get(y),_=0;v>_;_++){var b=v>1?p.name+_:p.name;x[b]=m[_]*g}}}},{"../render/vertex_array_object":43,"../util/struct_array":117,"../util/util":119,"./bucket/circle_bucket":18,"./bucket/fill_bucket":19,"./bucket/line_bucket":20,"./bucket/symbol_bucket":21,"./buffer":22,"feature-filter":122}],18:[function(t,e,n){"use strict";function r(){i.apply(this,arguments)}var i=t("../bucket"),a=t("../../util/util"),o=t("../load_geometry"),s=i.EXTENT;e.exports=r,r.prototype=a.inherit(i,{}),r.prototype.addCircleVertex=function(t,e,n,r,i){return t.emplaceBack(2*e+(r+1)/2,2*n+(i+1)/2)},r.prototype.programInterfaces={circle:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"}],paintAttributes:[{name:"a_color",components:4,type:"Uint8",getValue:function(t,e,n){return a.premultiply(t.getPaintValue("circle-color",e,n))},multiplier:255,paintProperty:"circle-color"},{name:"a_radius",components:1,type:"Uint16",isLayerConstant:!1,getValue:function(t,e,n){return[t.getPaintValue("circle-radius",e,n)]},multiplier:10,paintProperty:"circle-radius"}]}},r.prototype.addFeature=function(t){for(var e={zoom:this.zoom},n=o(t),r=this.makeRoomFor("circle",0),i=r.layout.vertex.length,a=0;a<n.length;a++)for(var l=0;l<n[a].length;l++){var u=n[a][l].x,c=n[a][l].y;if(!(0>u||u>=s||0>c||c>=s)){var f=this.makeRoomFor("circle",4),h=f.layout.vertex,d=this.addCircleVertex(h,u,c,-1,-1);this.addCircleVertex(h,u,c,1,-1),this.addCircleVertex(h,u,c,1,1),this.addCircleVertex(h,u,c,-1,1),f.layout.element.emplaceBack(d,d+1,d+2),f.layout.element.emplaceBack(d,d+3,d+2)}}this.addPaintAttributes("circle",e,t.properties,r,i)}},{"../../util/util":119,"../bucket":17,"../load_geometry":24}],19:[function(t,e,n){"use strict";function r(){i.apply(this,arguments)}var i=t("../bucket"),a=t("../../util/util"),o=t("../load_geometry");e.exports=r,r.prototype=a.inherit(i,{}),r.prototype.programInterfaces={fill:{vertexBuffer:!0,elementBuffer:!0,elementBuffer2:!0,elementBuffer2Components:2,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"}]}},r.prototype.addFeature=function(t){for(var e=o(t),n=0;n<e.length;n++)this.addFill(e[n])},r.prototype.addFill=function(t){if(!(t.length<3))for(var e,n,r=t.length,i=this.makeRoomFor("fill",r+1),a=0;a<t.length;a++){var o=t[a],s=i.layout.vertex.emplaceBack(o.x,o.y);0===a&&(e=s),a>=2&&(o.x!==t[0].x||o.y!==t[0].y)&&i.layout.element.emplaceBack(e,n,s),a>=1&&i.layout.element2.emplaceBack(n,s),n=s}}},{"../../util/util":119,"../bucket":17,"../load_geometry":24}],20:[function(t,e,n){"use strict";function r(){i.apply(this,arguments)}var i=t("../bucket"),a=t("../../util/util"),o=t("../load_geometry"),s=i.EXTENT,l=63,u=Math.cos(37.5*(Math.PI/180)),c=15,f=14,h=.5,d=Math.pow(2,f)/h;e.exports=r,r.prototype=a.inherit(i,{}),r.prototype.addLineVertex=function(t,e,n,r,i,a,o){return t.emplaceBack(e.x<<1|r,e.y<<1|i,Math.round(l*n.x)+128,Math.round(l*n.y)+128,(0===a?0:0>a?-1:1)+1|(o*h&63)<<2,o*h>>6)},r.prototype.programInterfaces={line:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"},{name:"a_data",components:4,type:"Uint8"}]}},r.prototype.addFeature=function(t){for(var e=o(t),n=0;n<e.length;n++)this.addLine(e[n],this.layer.layout["line-join"],this.layer.layout["line-cap"],this.layer.layout["line-miter-limit"],this.layer.layout["line-round-limit"])},r.prototype.addLine=function(t,e,n,r,i){for(var a=t.length;a>2&&t[a-1].equals(t[a-2]);)a--;if(!(t.length<2)){"bevel"===e&&(r=1.05);var o=c*(s/(512*this.overscaling)),l=t[0],f=t[a-1],h=l.equals(f);if(this.makeRoomFor("line",10*a),2!==a||!h){this.distance=0;var d,p,m,g,v,y,x,_=n,b=h?"butt":n,w=!0;this.e1=this.e2=this.e3=-1,h&&(d=t[a-2],v=l.sub(d)._unit()._perp());for(var M=0;a>M;M++)if(m=h&&M===a-1?t[1]:t[M+1],!m||!t[M].equals(m)){v&&(g=v),d&&(p=d),d=t[M],v=m?m.sub(d)._unit()._perp():g,g=g||v;var k=g.add(v)._unit(),S=k.x*v.x+k.y*v.y,T=1/S,A=u>S&&p&&m;if(A&&M>0){var E=d.dist(p);if(E>2*o){var L=d.sub(d.sub(p)._mult(o/E)._round());this.distance+=L.dist(p),this.addCurrentVertex(L,this.distance,g.mult(1),0,0,!1),p=L}}var z=p&&m,I=z?e:m?_:b;if(z&&"round"===I&&(i>T?I="miter":2>=T&&(I="fakeround")),"miter"===I&&T>r&&(I="bevel"),"bevel"===I&&(T>2&&(I="flipbevel"),r>T&&(I="miter")),p&&(this.distance+=d.dist(p)),"miter"===I)k._mult(T),this.addCurrentVertex(d,this.distance,k,0,0,!1);else if("flipbevel"===I){if(T>100)k=v.clone();else{var D=g.x*v.y-g.y*v.x>0?-1:1,P=T*g.add(v).mag()/g.sub(v).mag();k._perp()._mult(P*D)}this.addCurrentVertex(d,this.distance,k,0,0,!1),this.addCurrentVertex(d,this.distance,k.mult(-1),0,0,!1)}else if("bevel"===I||"fakeround"===I){var C=g.x*v.y-g.y*v.x>0,O=-Math.sqrt(T*T-1);if(C?(x=0,y=O):(y=0,x=O),w||this.addCurrentVertex(d,this.distance,g,y,x,!1),"fakeround"===I){for(var F,R=Math.floor(8*(.5-(S-.5))),N=0;R>N;N++)F=v.mult((N+1)/(R+1))._add(g)._unit(),this.addPieSliceVertex(d,this.distance,F,C);this.addPieSliceVertex(d,this.distance,k,C);for(var j=R-1;j>=0;j--)F=g.mult((j+1)/(R+1))._add(v)._unit(),this.addPieSliceVertex(d,this.distance,F,C)}m&&this.addCurrentVertex(d,this.distance,v,-y,-x,!1)}else"butt"===I?(w||this.addCurrentVertex(d,this.distance,g,0,0,!1),m&&this.addCurrentVertex(d,this.distance,v,0,0,!1)):"square"===I?(w||(this.addCurrentVertex(d,this.distance,g,1,1,!1),this.e1=this.e2=-1),m&&this.addCurrentVertex(d,this.distance,v,-1,-1,!1)):"round"===I&&(w||(this.addCurrentVertex(d,this.distance,g,0,0,!1),this.addCurrentVertex(d,this.distance,g,1,1,!0),this.e1=this.e2=-1),m&&(this.addCurrentVertex(d,this.distance,v,-1,-1,!0),this.addCurrentVertex(d,this.distance,v,0,0,!1)));if(A&&a-1>M){var B=d.dist(m);if(B>2*o){var q=d.add(m.sub(d)._mult(o/B)._round());this.distance+=q.dist(d),this.addCurrentVertex(q,this.distance,v.mult(1),0,0,!1),d=q}}w=!1}}}},r.prototype.addCurrentVertex=function(t,e,n,r,i,a){var o,s=a?1:0,l=this.arrayGroups.line[this.arrayGroups.line.length-1].layout,u=l.vertex,c=l.element;o=n.clone(),r&&o._sub(n.perp()._mult(r)),this.e3=this.addLineVertex(u,t,o,s,0,r,e),this.e1>=0&&this.e2>=0&&c.emplaceBack(this.e1,this.e2,this.e3),this.e1=this.e2,this.e2=this.e3,o=n.mult(-1),i&&o._sub(n.perp()._mult(i)),this.e3=this.addLineVertex(u,t,o,s,1,-i,e),this.e1>=0&&this.e2>=0&&c.emplaceBack(this.e1,this.e2,this.e3),this.e1=this.e2,this.e2=this.e3,e>d/2&&(this.distance=0,this.addCurrentVertex(t,this.distance,n,r,i,a))},r.prototype.addPieSliceVertex=function(t,e,n,r){var i=r?1:0;n=n.mult(r?-1:1);var a=this.arrayGroups.line[this.arrayGroups.line.length-1].layout,o=a.vertex,s=a.element;this.e3=this.addLineVertex(o,t,n,0,i,0,e),this.e1>=0&&this.e2>=0&&s.emplaceBack(this.e1,this.e2,this.e3),r?this.e2=this.e3:this.e1=this.e3}},{"../../util/util":119,"../bucket":17,"../load_geometry":24}],21:[function(t,e,n){"use strict";function r(t){s.apply(this,arguments),this.showCollisionBoxes=t.showCollisionBoxes,this.overscaling=t.overscaling,this.collisionBoxArray=t.collisionBoxArray,this.sdfIcons=t.sdfIcons,this.iconsNeedLinear=t.iconsNeedLinear,this.adjustedTextSize=t.adjustedTextSize,this.adjustedIconSize=t.adjustedIconSize,this.fontstack=t.fontstack}function i(t,e,n,r,i,a,o,s,l,u){return t.emplaceBack(e,n,Math.round(64*r),Math.round(64*i),a/4,o/4,10*(u||0),0,10*(s||0),10*Math.min(l||25,25))}function a(t,e,n,r,i,a,o,s,l,u,c,f,h,d,p,m,g){this.x=t.x,this.y=t.y,this.index=o,this.hasText=!!n,this.hasIcon=!!r,this.hasText&&(this.glyphQuads=a?b(t,n,f,e,i,d):[],this.textCollisionFeature=new y(s,e,t,l,u,c,n,f,h,d,!1)),this.hasIcon&&(this.iconQuads=a?w(t,r,p,e,i,g):[],this.iconCollisionFeature=new y(s,e,t,l,u,c,r,p,m,g,!0))}var o=t("point-geometry"),s=t("../bucket"),l=t("../../symbol/anchor"),u=t("../../symbol/get_anchors"),c=t("../../util/token"),f=t("../../symbol/quads"),h=t("../../symbol/shaping"),d=t("../../symbol/resolve_text"),p=t("../../symbol/mergelines"),m=t("../../symbol/clip_line"),g=t("../../util/util"),v=t("../load_geometry"),y=t("../../symbol/collision_feature"),x=h.shapeText,_=h.shapeIcon,b=f.getGlyphQuads,w=f.getIconQuads,M=s.EXTENT;e.exports=r,r.prototype=g.inherit(s,{}),r.prototype.serialize=function(){var t=s.prototype.serialize.apply(this);return t.sdfIcons=this.sdfIcons,t.iconsNeedLinear=this.iconsNeedLinear,t.adjustedTextSize=this.adjustedTextSize,t.adjustedIconSize=this.adjustedIconSize,t.fontstack=this.fontstack,t};var k=[{name:"a_pos",components:2,type:"Int16"},{name:"a_offset",components:2,type:"Int16"},{name:"a_data1",components:4,type:"Uint8"},{name:"a_data2",components:2,type:"Uint8"}];r.prototype.addCollisionBoxVertex=function(t,e,n,r,i){return t.emplaceBack(e.x,e.y,Math.round(n.x),Math.round(n.y),10*r,10*i)},r.prototype.programInterfaces={glyph:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:k},icon:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:k},collisionBox:{vertexBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"},{name:"a_extrude",components:2,type:"Int16"},{name:"a_data",components:2,type:"Uint8"}]}},r.prototype.populateBuffers=function(t,e,n){var r={lastIntegerZoom:1/0,lastIntegerZoomTime:0,lastZoom:0};this.adjustedTextMaxSize=this.layer.getLayoutValue("text-size",{zoom:18,zoomHistory:r}),this.adjustedTextSize=this.layer.getLayoutValue("text-size",{zoom:this.zoom+1,zoomHistory:r}),this.adjustedIconMaxSize=this.layer.getLayoutValue("icon-size",{zoom:18,zoomHistory:r}),this.adjustedIconSize=this.layer.getLayoutValue("icon-size",{zoom:this.zoom+1,zoomHistory:r});var i=512*this.overscaling;this.tilePixelRatio=M/i,this.compareText={},this.symbolInstances=[],this.iconsNeedLinear=!1;var a=this.layer.layout,o=this.features,s=this.textFeatures,l=.5,u=.5;switch(a["text-anchor"]){case"right":case"top-right":case"bottom-right":l=1;break;case"left":case"top-left":case"bottom-left":l=0}switch(a["text-anchor"]){case"bottom":case"bottom-right":case"bottom-left":u=1;break;case"top":case"top-right":case"top-left":u=0}for(var f="right"===a["text-justify"]?1:"left"===a["text-justify"]?0:.5,h=24,d=a["text-line-height"]*h,m="line"!==a["symbol-placement"]?a["text-max-width"]*h:0,g=a["text-letter-spacing"]*h,y=[a["text-offset"][0]*h,a["text-offset"][1]*h],b=this.fontstack=a["text-font"].join(","),w=[],k=0;k<o.length;k++)w.push(v(o[k]));if("line"===a["symbol-placement"]){var S=p(o,s,w);w=S.geometries,o=S.features,s=S.textFeatures}for(var T,A,E=0;E<o.length;E++)if(w[E]){if(T=s[E]?x(s[E],e[b],m,d,l,u,f,g,y):null,a["icon-image"]){var L=c(o[E].properties,a["icon-image"]),z=n[L];A=_(z,a),z&&(void 0===this.sdfIcons?this.sdfIcons=z.sdf:this.sdfIcons!==z.sdf&&console.warn("Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer"),1!==z.pixelRatio&&(this.iconsNeedLinear=!0))}else A=null;(T||A)&&this.addFeature(w[E],T,A,o[E].index)}this.placeFeatures(t,this.showCollisionBoxes),this.trimArrays()},r.prototype.addFeature=function(t,e,n,r){var i=this.layer.layout,o=24,s=this.adjustedTextSize/o,c=void 0!==this.adjustedTextMaxSize?this.adjustedTextMaxSize:this.adjustedTextSize,f=this.tilePixelRatio*s,h=this.tilePixelRatio*c/o,d=this.tilePixelRatio*this.adjustedIconSize,p=this.tilePixelRatio*i["symbol-spacing"],g=i["symbol-avoid-edges"],v=i["text-padding"]*this.tilePixelRatio,y=i["icon-padding"]*this.tilePixelRatio,x=i["text-max-angle"]/180*Math.PI,_="map"===i["text-rotation-alignment"]&&"line"===i["symbol-placement"],b="map"===i["icon-rotation-alignment"]&&"line"===i["symbol-placement"],w=i["text-allow-overlap"]||i["icon-allow-overlap"]||i["text-ignore-placement"]||i["icon-ignore-placement"],k="line"===i["symbol-placement"],S=p/2;k&&(t=m(t,0,0,M,M));for(var T=0;T<t.length;T++){var A,E=t[T];A=k?u(E,p,x,e,n,o,h,this.overscaling,M):[new l(E[0].x,E[0].y,0)];for(var L=0,z=A.length;z>L;L++){var I=A[L];if(!(e&&k&&this.anchorIsTooClose(e.text,S,I))){var D=!(I.x<0||I.x>M||I.y<0||I.y>M);if(!g||D){var P=D||w;this.symbolInstances.push(new a(I,E,e,n,i,P,this.symbolInstances.length,this.collisionBoxArray,r,this.sourceLayerIndex,this.index,f,v,_,d,y,b))}}}}},r.prototype.anchorIsTooClose=function(t,e,n){var r=this.compareText;if(t in r){for(var i=r[t],a=i.length-1;a>=0;a--)if(n.dist(i[a])<e)return!0}else r[t]=[];return r[t].push(n),!1},r.prototype.placeFeatures=function(t,e){this.recalculateStyleLayers(),this.createArrays();var n=this.layer.layout,r=t.maxScale,i="map"===n["text-rotation-alignment"]&&"line"===n["symbol-placement"],a="map"===n["icon-rotation-alignment"]&&"line"===n["symbol-placement"],o=n["text-allow-overlap"]||n["icon-allow-overlap"]||n["text-ignore-placement"]||n["icon-ignore-placement"];if(o){var s=t.angle,l=Math.sin(s),u=Math.cos(s);this.symbolInstances.sort(function(t,e){var n=l*t.x+u*t.y|0,r=l*e.x+u*e.y|0;return n-r||e.index-t.index})}for(var c=0;c<this.symbolInstances.length;c++){var f=this.symbolInstances[c],h=f.hasText,d=f.hasIcon,p=n["text-optional"]||!h,m=n["icon-optional"]||!d,g=h?t.placeCollisionFeature(f.textCollisionFeature,n["text-allow-overlap"],n["symbol-avoid-edges"]):t.minScale,v=d?t.placeCollisionFeature(f.iconCollisionFeature,n["icon-allow-overlap"],n["symbol-avoid-edges"]):t.minScale;p||m?!m&&g?g=Math.max(v,g):!p&&v&&(v=Math.max(v,g)):v=g=Math.max(v,g),h&&(t.insertCollisionFeature(f.textCollisionFeature,g,n["text-ignore-placement"]),r>=g&&this.addSymbols("glyph",f.glyphQuads,g,n["text-keep-upright"],i,t.angle)),d&&(t.insertCollisionFeature(f.iconCollisionFeature,v,n["icon-ignore-placement"]),r>=v&&this.addSymbols("icon",f.iconQuads,v,n["icon-keep-upright"],a,t.angle))}e&&this.addToDebugBuffers(t)},r.prototype.addSymbols=function(t,e,n,r,a,o){for(var s=this.makeRoomFor(t,4*e.length),l=s.layout.element,u=s.layout.vertex,c=this.zoom,f=Math.max(Math.log(n)/Math.LN2+c,0),h=0;h<e.length;h++){var d=e[h],p=d.angle,m=(p+o+Math.PI)%(2*Math.PI);if(!(r&&a&&(m<=Math.PI/2||m>3*Math.PI/2))){var g=d.tl,v=d.tr,y=d.bl,x=d.br,_=d.tex,b=d.anchorPoint,w=Math.max(c+Math.log(d.minScale)/Math.LN2,f),M=Math.min(c+Math.log(d.maxScale)/Math.LN2,25);if(!(w>=M)){w===f&&(w=0);var k=i(u,b.x,b.y,g.x,g.y,_.x,_.y,w,M,f);i(u,b.x,b.y,v.x,v.y,_.x+_.w,_.y,w,M,f),i(u,b.x,b.y,y.x,y.y,_.x,_.y+_.h,w,M,f),i(u,b.x,b.y,x.x,x.y,_.x+_.w,_.y+_.h,w,M,f),l.emplaceBack(k,k+1,k+2),l.emplaceBack(k+1,k+2,k+3)}}}},r.prototype.updateIcons=function(t){this.recalculateStyleLayers();var e=this.layer.layout["icon-image"];if(e)for(var n=0;n<this.features.length;n++){var r=c(this.features[n].properties,e);r&&(t[r]=!0)}},r.prototype.updateFont=function(t){this.recalculateStyleLayers();var e=this.layer.layout["text-font"],n=t[e]=t[e]||{};this.textFeatures=d(this.features,this.layer.layout,n)},r.prototype.addToDebugBuffers=function(t){for(var e=this.makeRoomFor("collisionBox",0),n=e.layout.vertex,r=-t.angle,i=t.yStretch,a=0;a<this.symbolInstances.length;a++)for(var s=0;2>s;s++){var l=this.symbolInstances[a][0===s?"textCollisionFeature":"iconCollisionFeature"];if(l)for(var u=l.boxStartIndex;u<l.boxEndIndex;u++){var c=this.collisionBoxArray.get(u),f=c.anchorPoint,h=new o(c.x1,c.y1*i)._rotate(r),d=new o(c.x2,c.y1*i)._rotate(r),p=new o(c.x1,c.y2*i)._rotate(r),m=new o(c.x2,c.y2*i)._rotate(r),g=Math.max(0,Math.min(25,this.zoom+Math.log(c.maxScale)/Math.LN2)),v=Math.max(0,Math.min(25,this.zoom+Math.log(c.placementScale)/Math.LN2));this.addCollisionBoxVertex(n,f,h,g,v),this.addCollisionBoxVertex(n,f,d,g,v),this.addCollisionBoxVertex(n,f,d,g,v),this.addCollisionBoxVertex(n,f,m,g,v),this.addCollisionBoxVertex(n,f,m,g,v),this.addCollisionBoxVertex(n,f,p,g,v),this.addCollisionBoxVertex(n,f,p,g,v),this.addCollisionBoxVertex(n,f,h,g,v)}}}},{"../../symbol/anchor":73,"../../symbol/clip_line":75,"../../symbol/collision_feature":77,"../../symbol/get_anchors":79,"../../symbol/mergelines":82,"../../symbol/quads":83,"../../symbol/resolve_text":84,"../../symbol/shaping":85,"../../util/token":118,"../../util/util":119,"../bucket":17,"../load_geometry":24,"point-geometry":174}],22:[function(t,e,n){"use strict";function r(t,e,n){this.arrayBuffer=t.arrayBuffer,this.length=t.length,this.attributes=e.members,this.itemSize=e.bytesPerElement,this.type=n,this.arrayType=e}var i=t("assert");e.exports=r,r.prototype.bind=function(t){var e=t[this.type];this.buffer?t.bindBuffer(e,this.buffer):(this.buffer=t.createBuffer(),t.bindBuffer(e,this.buffer),t.bufferData(e,this.arrayBuffer,t.STATIC_DRAW),this.arrayBuffer=null)};var a={Int8:"BYTE",Uint8:"UNSIGNED_BYTE",Int16:"SHORT",Uint16:"UNSIGNED_SHORT"};r.prototype.setVertexAttribPointers=function(t,e){for(var n=0;n<this.attributes.length;n++){var r=this.attributes[n],o=e[r.name];i(void 0!==o,'array member "'+r.name+'" name does not match shader attribute name'),t.vertexAttribPointer(o,r.components,t[a[r.type]],!1,this.arrayType.bytesPerElement,r.offset)}},r.prototype.destroy=function(t){this.buffer&&t.deleteBuffer(this.buffer)},r.BufferType={VERTEX:"ARRAY_BUFFER",ELEMENT:"ELEMENT_ARRAY_BUFFER"},r.ELEMENT_ATTRIBUTE_TYPE="Uint16",r.VERTEX_ATTRIBUTE_ALIGNMENT=4},{assert:6}],23:[function(t,e,n){"use strict";function r(t,e,n){if(t.grid){var r=t,i=e;t=r.coord,e=r.overscaling,this.grid=new p(r.grid),this.featureIndexArray=new k(r.featureIndexArray),this.rawTileData=i,this.bucketLayerIDs=r.bucketLayerIDs}else this.grid=new p(f,16,0),this.featureIndexArray=new k;this.coord=t,this.overscaling=e,this.x=t.x,this.y=t.y,this.z=t.z-Math.log(e)/Math.LN2,this.setCollisionTile(n)}function i(t){return Math.sqrt(t[0]*t[0]+t[1]*t[1])}function a(t,e){return e-t}function o(t){return t["line-gap-width"]>0?t["line-gap-width"]+2*t["line-width"]:t["line-width"]}function s(t,e,n,r,i){if(!e[0]&&!e[1])return t;e=u.convert(e),"viewport"===n&&e._rotate(-r);for(var a=[],o=0;o<t.length;o++){for(var s=t[o],l=[],c=0;c<s.length;c++)l.push(s[c].sub(e._mult(i)));a.push(l)}return a}function l(t,e){for(var n=[],r=new u(0,0),i=0;i<t.length;i++){for(var a=t[i],o=[],s=0;s<a.length;s++){var l=a[s-1],c=a[s],f=a[s+1],h=0===s?r:c.sub(l)._unit()._perp(),d=s===a.length-1?r:f.sub(c)._unit()._perp(),p=h._add(d)._unit(),m=p.x*d.x+p.y*d.y;p._mult(1/m),o.push(p._mult(e)._add(c))}n.push(o)}return n}var u=t("point-geometry"),c=t("./load_geometry"),f=t("./bucket").EXTENT,h=t("feature-filter"),d=t("../util/struct_array"),p=t("grid-index"),m=t("../util/dictionary_coder"),g=t("vector-tile"),v=t("pbf"),y=t("../util/vectortile_to_geojson"),x=t("../util/util").arraysIntersect,_=t("../util/intersection_tests"),b=_.multiPolygonIntersectsBufferedMultiPoint,w=_.multiPolygonIntersectsMultiPolygon,M=_.multiPolygonIntersectsBufferedMultiLine,k=new d({members:[{type:"Uint32",name:"featureIndex"},{type:"Uint16",name:"sourceLayerIndex"},{type:"Uint16",name:"bucketIndex"}]});e.exports=r,r.prototype.insert=function(t,e,n,r){var i=this.featureIndexArray.length;this.featureIndexArray.emplaceBack(e,n,r);for(var a=c(t),o=0;o<a.length;o++){for(var s=a[o],l=[1/0,1/0,-(1/0),-(1/0)],u=0;u<s.length;u++){var f=s[u];l[0]=Math.min(l[0],f.x),l[1]=Math.min(l[1],f.y),l[2]=Math.max(l[2],f.x),l[3]=Math.max(l[3],f.y)}this.grid.insert(i,l[0],l[1],l[2],l[3])}},r.prototype.setCollisionTile=function(t){this.collisionTile=t},r.prototype.serialize=function(){var t={coord:this.coord,overscaling:this.overscaling,grid:this.grid.toArrayBuffer(),featureIndexArray:this.featureIndexArray.serialize(),bucketLayerIDs:this.bucketLayerIDs};return{data:t,transferables:[t.grid,t.featureIndexArray.arrayBuffer]}},r.prototype.query=function(t,e){this.vtLayers||(this.vtLayers=new g.VectorTile(new v(new Uint8Array(this.rawTileData))).layers,this.sourceLayerCoder=new m(this.vtLayers?Object.keys(this.vtLayers).sort():["_geojsonTileLayer"]));var n={},r=t.params||{},s=f/t.tileSize/t.scale,l=h(r.filter),c=0;for(var d in e){var p=e[d],y=p.paint,x=0;"line"===p.type?x=o(y)/2+Math.abs(y["line-offset"])+i(y["line-translate"]):"fill"===p.type?x=i(y["fill-translate"]):"circle"===p.type&&(x=y["circle-radius"]+i(y["circle-translate"])),c=Math.max(c,x*s)}for(var _=t.queryGeometry.map(function(t){return t.map(function(t){return new u(t.x,t.y)})}),b=1/0,w=1/0,M=-(1/0),k=-(1/0),S=0;S<_.length;S++)for(var T=_[S],A=0;A<T.length;A++){var E=T[A];b=Math.min(b,E.x),w=Math.min(w,E.y),M=Math.max(M,E.x),k=Math.max(k,E.y)}var L=this.grid.query(b-c,w-c,M+c,k+c);L.sort(a),this.filterMatching(n,L,this.featureIndexArray,_,l,r.layers,e,t.bearing,s);var z=this.collisionTile.queryRenderedSymbols(b,w,M,k,t.scale);return z.sort(),this.filterMatching(n,z,this.collisionTile.collisionBoxArray,_,l,r.layers,e,t.bearing,s),n},r.prototype.filterMatching=function(t,e,n,r,i,a,u,f,h){for(var d,p=0;p<e.length;p++){var m=e[p];if(m!==d){d=m;var g=n.get(m),v=this.bucketLayerIDs[g.bucketIndex];if(!a||x(a,v)){var _=this.sourceLayerCoder.decode(g.sourceLayerIndex),k=this.vtLayers[_],S=k.feature(g.featureIndex);if(i(S))for(var T=null,A=0;A<v.length;A++){var E=v[A];if(!(a&&a.indexOf(E)<0)){var L=u[E];if(L){var z;if("symbol"!==L.type){T||(T=c(S));var I=L.paint;if("line"===L.type){z=s(r,I["line-translate"],I["line-translate-anchor"],f,h);var D=o(I)/2*h;if(I["line-offset"]&&(T=l(T,I["line-offset"]*h)),!M(z,T,D))continue}else if("fill"===L.type){if(z=s(r,I["fill-translate"],I["fill-translate-anchor"],f,h),!w(z,T))continue}else if("circle"===L.type){z=s(r,I["circle-translate"],I["circle-translate-anchor"],f,h);var P=I["circle-radius"]*h;if(!b(z,T,P))continue}}var C=new y(S,this.z,this.x,this.y);C.layer=L.serialize({includeRefProperties:!0});var O=t[E];void 0===O&&(O=t[E]=[]),O.push(C)}}}}}}}},{"../util/dictionary_coder":110,"../util/intersection_tests":114,"../util/struct_array":117,"../util/util":119,"../util/vectortile_to_geojson":120,"./bucket":17,"./load_geometry":24,"feature-filter":122,"grid-index":143,pbf:172,"point-geometry":174,"vector-tile":183}],24:[function(t,e,n){"use strict";var r=t("./bucket").EXTENT,i=-2*r,a=2*r-1,o=!1;e.exports=function(t){for(var e=r/t.extent,n=t.loadGeometry(),s=0;s<n.length;s++)for(var l=n[s],u=0;u<l.length;u++){var c=l[u];c.x=Math.round(c.x*e),c.y=Math.round(c.y*e),o===!1&&(c.x<i||c.x>a||c.y<i||c.y>a)&&(console.warn("Geometry exceeds allowed extent, reduce your vector tile buffer size"),o=!0)}return n}},{"./bucket":17}],25:[function(t,e,n){"use strict";function r(t,e,n){this.column=t,this.row=e,this.zoom=n}e.exports=r,r.prototype={clone:function(){return new r(this.column,this.row,this.zoom)},zoomTo:function(t){return this.clone()._zoomTo(t)},sub:function(t){return this.clone()._sub(t)},_zoomTo:function(t){var e=Math.pow(2,t-this.zoom);return this.column*=e,this.row*=e,this.zoom=t,this},_sub:function(t){return t=t.zoomTo(this.zoom),this.column-=t.column,this.row-=t.row,this}}},{}],26:[function(t,e,n){"use strict";function r(t,e){if(isNaN(t)||isNaN(e))throw new Error("Invalid LngLat object: ("+t+", "+e+")");if(this.lng=+t,this.lat=+e,this.lat>90||this.lat<-90)throw new Error("Invalid LngLat latitude value: must be between -90 and 90")}e.exports=r;var i=t("../util/util").wrap;r.prototype.wrap=function(){return new r(i(this.lng,-180,180),this.lat)},r.prototype.toArray=function(){return[this.lng,this.lat]},r.prototype.toString=function(){return"LngLat("+this.lng+", "+this.lat+")"},r.convert=function(t){return t instanceof r?t:Array.isArray(t)?new r(t[0],t[1]):t}},{"../util/util":119}],27:[function(t,e,n){"use strict";function r(t,e){t&&(e?this.extend(t).extend(e):4===t.length?this.extend([t[0],t[1]]).extend([t[2],t[3]]):this.extend(t[0]).extend(t[1]))}e.exports=r;var i=t("./lng_lat");r.prototype={extend:function(t){var e,n,a=this._sw,o=this._ne;if(t instanceof i)e=t,n=t;else{if(!(t instanceof r))return t?this.extend(i.convert(t)||r.convert(t)):this;if(e=t._sw,n=t._ne,!e||!n)return this}return a||o?(a.lng=Math.min(e.lng,a.lng),a.lat=Math.min(e.lat,a.lat),o.lng=Math.max(n.lng,o.lng),o.lat=Math.max(n.lat,o.lat)):(this._sw=new i(e.lng,e.lat),this._ne=new i(n.lng,n.lat)),this},getCenter:function(){return new i((this._sw.lng+this._ne.lng)/2,(this._sw.lat+this._ne.lat)/2)},getSouthWest:function(){return this._sw},getNorthEast:function(){return this._ne},getNorthWest:function(){return new i(this.getWest(),this.getNorth())},getSouthEast:function(){return new i(this.getEast(),this.getSouth())},getWest:function(){return this._sw.lng},getSouth:function(){return this._sw.lat},getEast:function(){return this._ne.lng},getNorth:function(){return this._ne.lat},toArray:function(){return[this._sw.toArray(),this._ne.toArray()]},toString:function(){return"LngLatBounds("+this._sw.toString()+", "+this._ne.toString()+")"}},r.convert=function(t){return!t||t instanceof r?t:new r(t)}},{"./lng_lat":26}],28:[function(t,e,n){"use strict";function r(t,e){this.tileSize=512,this._minZoom=t||0,this._maxZoom=e||22,this.latRange=[-85.05113,85.05113],this.width=0,this.height=0,this._center=new i(0,0),this.zoom=0,this.angle=0,this._altitude=1.5,this._pitch=0,this._unmodified=!0}var i=t("./lng_lat"),a=t("point-geometry"),o=t("./coordinate"),s=t("../util/util").wrap,l=t("../util/interpolate"),u=t("../source/tile_coord"),c=t("../data/bucket").EXTENT,f=t("gl-matrix"),h=f.vec4,d=f.mat4,p=f.mat2;e.exports=r,r.prototype={get minZoom(){return this._minZoom},set minZoom(t){this._minZoom!==t&&(this._minZoom=t,this.zoom=Math.max(this.zoom,t))},get maxZoom(){return this._maxZoom},set maxZoom(t){this._maxZoom!==t&&(this._maxZoom=t,this.zoom=Math.min(this.zoom,t))},get worldSize(){return this.tileSize*this.scale},get centerPoint(){return this.size._div(2)},get size(){return new a(this.width,this.height)},get bearing(){return-this.angle/Math.PI*180},set bearing(t){var e=-s(t,-180,180)*Math.PI/180;this.angle!==e&&(this._unmodified=!1,this.angle=e,this._calcProjMatrix(),this.rotationMatrix=p.create(),p.rotate(this.rotationMatrix,this.rotationMatrix,this.angle))},get pitch(){return this._pitch/Math.PI*180},set pitch(t){var e=Math.min(60,t)/180*Math.PI;this._pitch!==e&&(this._unmodified=!1,this._pitch=e,this._calcProjMatrix())},get altitude(){return this._altitude},set altitude(t){var e=Math.max(.75,t);this._altitude!==e&&(this._unmodified=!1,this._altitude=e,this._calcProjMatrix())},get zoom(){return this._zoom},set zoom(t){var e=Math.min(Math.max(t,this.minZoom),this.maxZoom);this._zoom!==e&&(this._unmodified=!1,this._zoom=e,this.scale=this.zoomScale(e),this.tileZoom=Math.floor(e),this.zoomFraction=e-this.tileZoom,this._calcProjMatrix(),this._constrain())},get center(){return this._center},set center(t){t.lat===this._center.lat&&t.lng===this._center.lng||(this._unmodified=!1,this._center=t,this._calcProjMatrix(),this._constrain())},resize:function(t,e){this.width=t,this.height=e,this.pixelsToGLUnits=[2/t,-2/e],this._calcProjMatrix(),this._constrain()},get unmodified(){return this._unmodified},zoomScale:function(t){return Math.pow(2,t)},scaleZoom:function(t){return Math.log(t)/Math.LN2},project:function(t,e){return new a(this.lngX(t.lng,e),this.latY(t.lat,e))},unproject:function(t,e){return new i(this.xLng(t.x,e),this.yLat(t.y,e))},get x(){return this.lngX(this.center.lng)},get y(){return this.latY(this.center.lat)},get point(){return new a(this.x,this.y)},lngX:function(t,e){return(180+t)*(e||this.worldSize)/360},latY:function(t,e){var n=180/Math.PI*Math.log(Math.tan(Math.PI/4+t*Math.PI/360));return(180-n)*(e||this.worldSize)/360},xLng:function(t,e){return 360*t/(e||this.worldSize)-180},yLat:function(t,e){var n=180-360*t/(e||this.worldSize);return 360/Math.PI*Math.atan(Math.exp(n*Math.PI/180))-90},panBy:function(t){var e=this.centerPoint._add(t);this.center=this.pointLocation(e)},setLocationAtPoint:function(t,e){var n=this.locationCoordinate(t),r=this.pointCoordinate(e),i=this.pointCoordinate(this.centerPoint),a=r._sub(n);this._unmodified=!1,this.center=this.coordinateLocation(i._sub(a))},locationPoint:function(t){return this.coordinatePoint(this.locationCoordinate(t))},pointLocation:function(t){return this.coordinateLocation(this.pointCoordinate(t))},locationCoordinate:function(t){var e=this.zoomScale(this.tileZoom)/this.worldSize,n=i.convert(t);return new o(this.lngX(n.lng)*e,this.latY(n.lat)*e,this.tileZoom)},coordinateLocation:function(t){var e=this.zoomScale(t.zoom);return new i(this.xLng(t.column,e),this.yLat(t.row,e))},pointCoordinate:function(t){var e=0,n=this.coordinatePointMatrix(this.tileZoom);if(d.invert(n,n),!n)throw new Error("failed to invert matrix");var r=[t.x,t.y,0,1],i=[t.x,t.y,1,1];h.transformMat4(r,r,n),h.transformMat4(i,i,n);var a=r[3],s=i[3],u=r[0]/a,c=i[0]/s,f=r[1]/a,p=i[1]/s,m=r[2]/a,g=i[2]/s,v=m===g?0:(e-m)/(g-m);return new o(l(u,c,v),l(f,p,v),this.tileZoom)},coordinatePoint:function(t){var e=this.coordinatePointMatrix(t.zoom),n=[t.column,t.row,0,1];return h.transformMat4(n,n,e),new a(n[0]/n[3],n[1]/n[3])},coordinatePointMatrix:function(t){var e=d.copy(new Float64Array(16),this.projMatrix),n=this.worldSize/this.zoomScale(t);return d.scale(e,e,[n,n,1]),d.multiply(e,this.getPixelMatrix(),e),e},getPixelMatrix:function(){var t=d.create();return d.scale(t,t,[this.width/2,-this.height/2,1]),d.translate(t,t,[1,-1,0]),t},calculatePosMatrix:function(t,e){void 0===e&&(e=1/0),t instanceof u&&(t=t.toCoordinate(e));var n=Math.min(t.zoom,e),r=this.worldSize/Math.pow(2,n),i=new Float64Array(16);return d.identity(i),d.translate(i,i,[t.column*r,t.row*r,0]),d.scale(i,i,[r/c,r/c,1]),d.multiply(i,this.projMatrix,i),new Float32Array(i)},_constrain:function(){if(this.center&&this.width&&this.height&&!this._constraining){this._constraining=!0;var t,e,n,r,i,o,s,l,u=this.size,c=this._unmodified;this.latRange&&(t=this.latY(this.latRange[1]),e=this.latY(this.latRange[0]),i=e-t<u.y?u.y/(e-t):0),this.lngRange&&(n=this.lngX(this.lngRange[0]),r=this.lngX(this.lngRange[1]),o=r-n<u.x?u.x/(r-n):0);var f=Math.max(o||0,i||0);if(f)return this.center=this.unproject(new a(o?(r+n)/2:this.x,i?(e+t)/2:this.y)),this.zoom+=this.scaleZoom(f),this._unmodified=c,void(this._constraining=!1);if(this.latRange){var h=this.y,d=u.y/2;t>h-d&&(l=t+d),h+d>e&&(l=e-d)}if(this.lngRange){var p=this.x,m=u.x/2;n>p-m&&(s=n+m),p+m>r&&(s=r-m)}void 0===s&&void 0===l||(this.center=this.unproject(new a(void 0!==s?s:this.x,void 0!==l?l:this.y))),this._unmodified=c,this._constraining=!1}},_calcProjMatrix:function(){var t=new Float64Array(16),e=Math.atan(.5/this.altitude),n=Math.sin(e)*this.altitude/Math.sin(Math.PI/2-this._pitch-e),r=Math.cos(Math.PI/2-this._pitch)*n+this.altitude;d.perspective(t,2*Math.atan(this.height/2/this.altitude),this.width/this.height,.1,r),d.translate(t,t,[0,0,-this.altitude]),d.scale(t,t,[1,-1,1/this.height]),d.rotateX(t,t,this._pitch),d.rotateZ(t,t,this.angle),d.translate(t,t,[-this.x,-this.y,0]),this.projMatrix=t}}},{"../data/bucket":17,"../source/tile_coord":51,"../util/interpolate":113,"../util/util":119,"./coordinate":25,"./lng_lat":26,"gl-matrix":133,"point-geometry":174}],29:[function(t,e,n){"use strict";var r={" 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a,o,s,l,u,c,f,h,d=[];for(a=0,o=t.length;o>a;a++)if(u=r[t[a]]){for(h=null,s=0,l=u[1].length;l>s;s+=2)-1===u[1][s]&&-1===u[1][s+1]?h=null:(c=e+u[1][s]*i,f=n-u[1][s+1]*i,h&&d.push(h.x,h.y,c,f),h={x:c,y:f});e+=u[0]*i}return d}},{}],30:[function(t,e,n){"use strict";var r=e.exports={};r.Map=t("./ui/map"),r.Control=t("./ui/control/control"),r.Navigation=t("./ui/control/navigation"),r.Geolocate=t("./ui/control/geolocate"),r.Attribution=t("./ui/control/attribution"),r.Popup=t("./ui/popup"),r.GeoJSONSource=t("./source/geojson_source"),r.VideoSource=t("./source/video_source"),r.ImageSource=t("./source/image_source"),r.Style=t("./style/style"),r.LngLat=t("./geo/lng_lat"),r.LngLatBounds=t("./geo/lng_lat_bounds"),r.Point=t("point-geometry"),r.Evented=t("./util/evented"),r.util=t("./util/util"),r.supported=t("./util/browser").supported;var i=t("./util/ajax");r.util.getJSON=i.getJSON,r.util.getArrayBuffer=i.getArrayBuffer;var a=t("./util/config");r.config=a,Object.defineProperty(r,"accessToken",{get:function(){return a.ACCESS_TOKEN},set:function(t){a.ACCESS_TOKEN=t}})},{"./geo/lng_lat":26,"./geo/lng_lat_bounds":27,"./source/geojson_source":44,"./source/image_source":46,"./source/video_source":54,"./style/style":60,"./ui/control/attribution":88,"./ui/control/control":89,"./ui/control/geolocate":90,"./ui/control/navigation":91,"./ui/map":101,"./ui/popup":102,"./util/ajax":104,"./util/browser":105,"./util/config":109,"./util/evented":111,"./util/util":119,"point-geometry":174}],31:[function(t,e,n){"use strict";function r(t,e,n){var r,i=t.gl,l=t.transform,u=o.premultiply(n.paint["background-color"]),c=n.paint["background-pattern"],f=n.paint["background-opacity"],h=c?t.spriteAtlas.getPosition(c.from,!0):null,d=c?t.spriteAtlas.getPosition(c.to,!0):null;if(t.setDepthSublayer(0),h&&d){if(t.isOpaquePass)return;r=t.useProgram("pattern"),i.uniform1i(r.u_image,0),i.uniform2fv(r.u_pattern_tl_a,h.tl),i.uniform2fv(r.u_pattern_br_a,h.br),i.uniform2fv(r.u_pattern_tl_b,d.tl),i.uniform2fv(r.u_pattern_br_b,d.br),i.uniform1f(r.u_opacity,f),i.uniform1f(r.u_mix,c.t),t.spriteAtlas.bind(i,!0),t.tileExtentPatternVAO.bind(i,r,t.tileExtentBuffer)}else{if(t.isOpaquePass!==(1===u[3]))return;r=t.useProgram("fill"),i.uniform4fv(r.u_color,u),i.uniform1f(r.u_opacity,f),t.tileExtentVAO.bind(i,r,t.tileExtentBuffer)}i.disable(i.STENCIL_TEST);for(var p=a.coveringTiles(l),m=0;m<p.length;m++){var g=p[m],v=512;if(h&&d){var y=[h.size[0]*c.fromScale,h.size[1]*c.fromScale],x=[d.size[0]*c.toScale,d.size[1]*c.toScale],_={coord:g,tileSize:v};i.uniform2fv(r.u_patternscale_a,[1/s(_,y[0],t.transform.tileZoom),1/s(_,y[1],t.transform.tileZoom)]),i.uniform2fv(r.u_patternscale_b,[1/s(_,x[0],t.transform.tileZoom),1/s(_,x[1],t.transform.tileZoom)]);var b=v*Math.pow(2,t.transform.tileZoom-g.z),w=b/y[0]%1*(g.x+g.w*Math.pow(2,g.z)),M=b/y[1]%1*g.y,k=b/x[0]%1*(g.x+g.w*Math.pow(2,g.z)),S=b/x[1]%1*g.y;i.uniform2fv(r.u_offset_a,[w,M]),i.uniform2fv(r.u_offset_b,[k,S])}i.uniformMatrix4fv(r.u_matrix,!1,t.transform.calculatePosMatrix(g)),i.drawArrays(i.TRIANGLE_STRIP,0,t.tileExtentBuffer.length)}i.stencilMask(0),i.stencilFunc(i.EQUAL,128,128)}var i=t("../source/tile_pyramid"),a=new i({tileSize:512}),o=t("../util/util"),s=t("../source/pixels_to_tile_units");e.exports=r},{"../source/pixels_to_tile_units":47,"../source/tile_pyramid":52,"../util/util":119}],32:[function(t,e,n){"use strict";function r(t,e,n,r){if(!t.isOpaquePass){var a=t.gl;t.setDepthSublayer(0),t.depthMask(!1),a.disable(a.STENCIL_TEST);for(var o=0;o<r.length;o++){var s=r[o],l=e.getTile(s),u=l.getBucket(n);if(u){var c=u.bufferGroups.circle;if(c){var f=t.useProgram("circle",u.getProgramMacros("circle",n));a.uniform2fv(f.u_extrude_scale,t.transform.pixelsToGLUnits),a.uniform1f(f.u_blur,n.paint["circle-blur"]),a.uniform1f(f.u_devicepixelratio,i.devicePixelRatio),a.uniform1f(f.u_opacity,n.paint["circle-opacity"]),a.uniformMatrix4fv(f.u_matrix,!1,t.translatePosMatrix(s.posMatrix,l,n.paint["circle-translate"],n.paint["circle-translate-anchor"])),u.setUniforms(a,"circle",f,n,{zoom:t.transform.zoom});for(var h=0;h<c.length;h++){var d=c[h];d.vaos[n.id].bind(a,f,d.layout.vertex,d.layout.element,d.paint[n.id]),a.drawElements(a.TRIANGLES,3*d.layout.element.length,a.UNSIGNED_SHORT,0)}}}}}}var i=t("../util/browser");e.exports=r},{"../util/browser":105}],33:[function(t,e,n){"use strict";function r(t,e,n,r){var i=t.gl;i.enable(i.STENCIL_TEST);for(var a=t.useProgram("collisionbox"),o=0;o<r.length;o++){var s=r[o],l=e.getTile(s),u=l.getBucket(n);if(u){var c=u.bufferGroups.collisionBox;if(c&&c.length){var f=c[0];0!==f.layout.vertex.length&&(i.uniformMatrix4fv(a.u_matrix,!1,s.posMatrix),t.enableTileClippingMask(s),t.lineWidth(1),i.uniform1f(a.u_scale,Math.pow(2,t.transform.zoom-l.coord.z)),i.uniform1f(a.u_zoom,10*t.transform.zoom),i.uniform1f(a.u_maxzoom,10*(l.coord.z+1)),f.vaos[n.id].bind(i,a,f.layout.vertex),i.drawArrays(i.LINES,0,f.layout.vertex.length))}}}}e.exports=r},{}],34:[function(t,e,n){"use strict";function r(t,e,n){if(!t.isOpaquePass&&t.options.debug)for(var r=0;r<n.length;r++)i(t,e,n[r])}function i(t,e,n){var r=t.gl;r.disable(r.STENCIL_TEST),t.lineWidth(1*o.devicePixelRatio);var i=n.posMatrix,f=t.useProgram("debug");r.uniformMatrix4fv(f.u_matrix,!1,i),r.uniform4f(f.u_color,1,0,0,1),t.debugVAO.bind(r,f,t.debugBuffer),r.drawArrays(r.LINE_STRIP,0,t.debugBuffer.length);for(var h=a(n.toString(),50,200,5),d=new t.PosArray,p=0;p<h.length;p+=2)d.emplaceBack(h[p],h[p+1]);var m=new u(d.serialize(),t.PosArray.serialize(),u.BufferType.VERTEX),g=new c;g.bind(r,f,m),r.uniform4f(f.u_color,1,1,1,1);for(var v=e.getTile(n).tileSize,y=l/(Math.pow(2,t.transform.zoom-n.z)*v),x=[[-1,-1],[-1,1],[1,-1],[1,1]],_=0;_<x.length;_++){var b=x[_];r.uniformMatrix4fv(f.u_matrix,!1,s.translate([],i,[y*b[0],y*b[1],0])),r.drawArrays(r.LINES,0,m.length)}r.uniform4f(f.u_color,0,0,0,1),r.uniformMatrix4fv(f.u_matrix,!1,i),r.drawArrays(r.LINES,0,m.length)}var a=t("../lib/debugtext"),o=t("../util/browser"),s=t("gl-matrix").mat4,l=t("../data/bucket").EXTENT,u=t("../data/buffer"),c=t("./vertex_array_object");e.exports=r},{"../data/bucket":17,"../data/buffer":22,"../lib/debugtext":29,"../util/browser":105,"./vertex_array_object":43,"gl-matrix":133}],35:[function(t,e,n){"use strict";function r(t,e,n,r){var o=t.gl;o.enable(o.STENCIL_TEST);var l=s.premultiply(n.paint["fill-color"]),u=n.paint["fill-pattern"],c=s.premultiply(n.paint["fill-outline-color"]),f=n.paint["fill-opacity"];if(u?!t.isOpaquePass:t.isOpaquePass===(1===l[3]&&1===f))for(var h=0;h<r.length;h++)i(t,e,n,r[h]);if(!t.isOpaquePass&&n.paint["fill-antialias"])if(c||!n.paint["fill-pattern"]){var d=t.useProgram("outline");t.lineWidth(2),t.depthMask(!1),c?t.setDepthSublayer(2):t.setDepthSublayer(0),o.uniform2f(d.u_world,o.drawingBufferWidth,o.drawingBufferHeight),o.uniform4fv(d.u_color,c?c:l),o.uniform1f(d.u_opacity,f);for(var p=0;p<r.length;p++)a(t,e,n,r[p])}else{var m=t.useProgram("outlinepattern");t.lineWidth(2),t.depthMask(!1),t.setDepthSublayer(0),o.uniform2f(m.u_world,o.drawingBufferWidth,o.drawingBufferHeight);for(var g=0;g<r.length;g++)a(t,e,n,r[g])}}function i(t,e,n,r){var i=e.getTile(r),a=i.getBucket(n);if(a){var l=a.bufferGroups.fill;if(l){var u=t.gl,c=s.premultiply(n.paint["fill-color"]),f=n.paint["fill-pattern"],h=n.paint["fill-opacity"],d=r.posMatrix,p=t.translatePosMatrix(d,i,n.paint["fill-translate"],n.paint["fill-translate-anchor"]);t.setDepthSublayer(1),u.stencilMask(7),u.clear(u.STENCIL_BUFFER_BIT),t.enableTileClippingMask(r),u.stencilOpSeparate(u.FRONT,u.KEEP,u.KEEP,u.INCR_WRAP),u.stencilOpSeparate(u.BACK,u.KEEP,u.KEEP,u.DECR_WRAP),u.colorMask(!1,!1,!1,!1),t.depthMask(!1);var m=t.useProgram("fill");u.uniformMatrix4fv(m.u_matrix,!1,p);for(var g=0;g<l.length;g++){var v=l[g];v.vaos[n.id].bind(u,m,v.layout.vertex,v.layout.element),u.drawElements(u.TRIANGLES,3*v.layout.element.length,u.UNSIGNED_SHORT,0)}u.colorMask(!0,!0,!0,!0),t.depthMask(!0),u.stencilOp(u.KEEP,u.KEEP,u.KEEP),u.stencilMask(0);var y;f?(y=t.useProgram("pattern"),o(f,h,i,r,t,y),u.activeTexture(u.TEXTURE0),t.spriteAtlas.bind(u,!0),t.tileExtentPatternVAO.bind(u,y,t.tileExtentBuffer)):(y=t.useProgram("fill"),u.uniform4fv(m.u_color,c),u.uniform1f(m.u_opacity,h),t.tileExtentVAO.bind(u,y,t.tileExtentBuffer)),u.uniformMatrix4fv(y.u_matrix,!1,d),u.stencilFunc(u.NOTEQUAL,0,7),u.drawArrays(u.TRIANGLE_STRIP,0,t.tileExtentBuffer.length),u.stencilMask(0)}}}function a(t,e,n,r){var i=e.getTile(r),a=i.getBucket(n);if(a){var s=t.gl,l=a.bufferGroups.fill,u=n.paint["fill-pattern"],c=n.paint["fill-opacity"],f=u?t.useProgram("outlinepattern"):t.useProgram("outline");s.uniformMatrix4fv(f.u_matrix,!1,t.translatePosMatrix(r.posMatrix,i,n.paint["fill-translate"],n.paint["fill-translate-anchor"])),u&&o(u,c,i,r,t,f),t.enableTileClippingMask(r);for(var h=0;h<l.length;h++){var d=l[h];d.secondVaos[n.id].bind(s,f,d.layout.vertex,d.layout.element2),s.drawElements(s.LINES,2*d.layout.element2.length,s.UNSIGNED_SHORT,0)}}}function o(t,e,n,r,i,a){var o=i.gl,s=i.spriteAtlas.getPosition(t.from,!0),u=i.spriteAtlas.getPosition(t.to,!0);if(s&&u){o.uniform1i(a.u_image,0),o.uniform2fv(a.u_pattern_tl_a,s.tl),o.uniform2fv(a.u_pattern_br_a,s.br),o.uniform2fv(a.u_pattern_tl_b,u.tl),o.uniform2fv(a.u_pattern_br_b,u.br),o.uniform1f(a.u_opacity,e),o.uniform1f(a.u_mix,t.t);var c=[s.size[0]*t.fromScale,s.size[1]*t.fromScale],f=[u.size[0]*t.toScale,u.size[1]*t.toScale];o.uniform2fv(a.u_patternscale_a,[1/l(n,c[0],i.transform.tileZoom),1/l(n,c[1],i.transform.tileZoom)]),o.uniform2fv(a.u_patternscale_b,[1/l(n,f[0],i.transform.tileZoom),1/l(n,f[1],i.transform.tileZoom)]);var h=n.tileSize*Math.pow(2,i.transform.tileZoom-n.coord.z),d=h/c[0]%1*(n.coord.x+r.w*Math.pow(2,n.coord.z)),p=h/c[1]%1*n.coord.y,m=h/f[0]%1*(n.coord.x+r.w*Math.pow(2,n.coord.z)),g=h/f[1]%1*n.coord.y;o.uniform2fv(a.u_offset_a,[d,p]),o.uniform2fv(a.u_offset_b,[m,g]),o.activeTexture(o.TEXTURE0),i.spriteAtlas.bind(o,!0)}}var s=t("../util/util"),l=t("../source/pixels_to_tile_units");e.exports=r},{"../source/pixels_to_tile_units":47,"../util/util":119}],36:[function(t,e,n){"use strict";var r=t("../util/browser"),i=t("gl-matrix").mat2,a=t("../util/util"),o=t("../source/pixels_to_tile_units");e.exports=function(t,e,n,s){if(!t.isOpaquePass){t.setDepthSublayer(0),t.depthMask(!1);var l=t.gl;if(l.enable(l.STENCIL_TEST),!(n.paint["line-width"]<=0)){var u=1/r.devicePixelRatio,c=n.paint["line-blur"]+u,f=n.paint["line-width"]/2,h=-1,d=0,p=0;n.paint["line-gap-width"]>0&&(h=n.paint["line-gap-width"]/2+.5*u,f=n.paint["line-width"],d=h-u/2);var m=d+f+u/2+p,g=a.premultiply(n.paint["line-color"]),v=t.transform,y=i.create();i.scale(y,y,[1,Math.cos(v._pitch)]),i.rotate(y,y,t.transform.angle);var x,_,b,w,M,k=Math.sqrt(v.height*v.height/4*(1+v.altitude*v.altitude)),S=v.height/2*Math.tan(v._pitch),T=(k+S)/k-1,A=n.paint["line-dasharray"],E=n.paint["line-pattern"];if(A)x=t.useProgram("linesdfpattern"),l.uniform2fv(x.u_linewidth,[m,h]),l.uniform1f(x.u_blur,c),l.uniform4fv(x.u_color,g),l.uniform1f(x.u_opacity,n.paint["line-opacity"]),_=t.lineAtlas.getDash(A.from,"round"===n.layout["line-cap"]),b=t.lineAtlas.getDash(A.to,"round"===n.layout["line-cap"]),l.uniform1i(x.u_image,0),l.activeTexture(l.TEXTURE0),t.lineAtlas.bind(l),l.uniform1f(x.u_tex_y_a,_.y),l.uniform1f(x.u_tex_y_b,b.y),l.uniform1f(x.u_mix,A.t),l.uniform1f(x.u_extra,T),l.uniform1f(x.u_offset,-n.paint["line-offset"]),l.uniformMatrix2fv(x.u_antialiasingmatrix,!1,y);else if(E){if(w=t.spriteAtlas.getPosition(E.from,!0),M=t.spriteAtlas.getPosition(E.to,!0),!w||!M)return;x=t.useProgram("linepattern"),l.uniform1i(x.u_image,0),l.activeTexture(l.TEXTURE0),t.spriteAtlas.bind(l,!0),l.uniform2fv(x.u_linewidth,[m,h]),l.uniform1f(x.u_blur,c),l.uniform2fv(x.u_pattern_tl_a,w.tl),l.uniform2fv(x.u_pattern_br_a,w.br),l.uniform2fv(x.u_pattern_tl_b,M.tl),l.uniform2fv(x.u_pattern_br_b,M.br),l.uniform1f(x.u_fade,E.t),l.uniform1f(x.u_opacity,n.paint["line-opacity"]),l.uniform1f(x.u_extra,T),l.uniform1f(x.u_offset,-n.paint["line-offset"]),l.uniformMatrix2fv(x.u_antialiasingmatrix,!1,y)}else x=t.useProgram("line"),l.uniform2fv(x.u_linewidth,[m,h]),l.uniform1f(x.u_blur,c),l.uniform1f(x.u_extra,T),l.uniform1f(x.u_offset,-n.paint["line-offset"]),l.uniformMatrix2fv(x.u_antialiasingmatrix,!1,y),l.uniform4fv(x.u_color,g),l.uniform1f(x.u_opacity,n.paint["line-opacity"]);for(var L=0;L<s.length;L++){var z=s[L],I=e.getTile(z),D=I.getBucket(n);if(D){var P=D.bufferGroups.line;if(P){t.enableTileClippingMask(z);var C=t.translatePosMatrix(z.posMatrix,I,n.paint["line-translate"],n.paint["line-translate-anchor"]);l.uniformMatrix4fv(x.u_matrix,!1,C);var O=1/o(I,1,t.transform.zoom);if(A){var F=_.width*A.fromScale,R=b.width*A.toScale,N=[1/o(I,F,t.transform.tileZoom),-_.height/2],j=[1/o(I,R,t.transform.tileZoom),-b.height/2],B=t.lineAtlas.width/(256*Math.min(F,R)*r.devicePixelRatio)/2;l.uniform1f(x.u_ratio,O),l.uniform2fv(x.u_patternscale_a,N),l.uniform2fv(x.u_patternscale_b,j),l.uniform1f(x.u_sdfgamma,B)}else E?(l.uniform1f(x.u_ratio,O),l.uniform2fv(x.u_pattern_size_a,[o(I,w.size[0]*E.fromScale,t.transform.tileZoom),M.size[1]]),l.uniform2fv(x.u_pattern_size_b,[o(I,M.size[0]*E.toScale,t.transform.tileZoom),M.size[1]])):l.uniform1f(x.u_ratio,O);for(var q=0;q<P.length;q++){var V=P[q];V.vaos[n.id].bind(l,x,V.layout.vertex,V.layout.element),l.drawElements(l.TRIANGLES,3*V.layout.element.length,l.UNSIGNED_SHORT,0)}}}}}}}},{"../source/pixels_to_tile_units":47,"../util/browser":105,"../util/util":119,"gl-matrix":133}],37:[function(t,e,n){"use strict";function r(t,e,n,r){if(!t.isOpaquePass){var a=t.gl;a.enable(a.DEPTH_TEST),t.depthMask(!0),a.depthFunc(a.LESS);for(var o=r.length&&r[0].z,s=0;s<r.length;s++){var l=r[s];t.setDepthSublayer(l.z-o),i(t,e,n,l)}a.depthFunc(a.LEQUAL)}}function i(t,e,n,r){var i=t.gl;i.disable(i.STENCIL_TEST);var u=e.getTile(r),c=t.transform.calculatePosMatrix(r,e.maxzoom),f=t.useProgram("raster");i.uniformMatrix4fv(f.u_matrix,!1,c),i.uniform1f(f.u_brightness_low,n.paint["raster-brightness-min"]),i.uniform1f(f.u_brightness_high,n.paint["raster-brightness-max"]),i.uniform1f(f.u_saturation_factor,s(n.paint["raster-saturation"])),i.uniform1f(f.u_contrast_factor,o(n.paint["raster-contrast"])),i.uniform3fv(f.u_spin_weights,a(n.paint["raster-hue-rotate"]));var h,d,p=u.source&&u.source._pyramid.findLoadedParent(r,0,{}),m=l(u,p,n,t.transform);i.activeTexture(i.TEXTURE0),i.bindTexture(i.TEXTURE_2D,u.texture),p?(i.activeTexture(i.TEXTURE1),i.bindTexture(i.TEXTURE_2D,p.texture),h=Math.pow(2,p.coord.z-u.coord.z),d=[u.coord.x*h%1,u.coord.y*h%1]):m[1]=0,i.uniform2fv(f.u_tl_parent,d||[0,0]),i.uniform1f(f.u_scale_parent,h||1),i.uniform1f(f.u_buffer_scale,1),i.uniform1f(f.u_opacity0,m[0]),i.uniform1f(f.u_opacity1,m[1]),i.uniform1i(f.u_image0,0),i.uniform1i(f.u_image1,1);var g=u.boundsBuffer||t.rasterBoundsBuffer,v=u.boundsVAO||t.rasterBoundsVAO;v.bind(i,f,g),i.drawArrays(i.TRIANGLE_STRIP,0,g.length)}function a(t){t*=Math.PI/180;var e=Math.sin(t),n=Math.cos(t);return[(2*n+1)/3,(-Math.sqrt(3)*e-n+1)/3,(Math.sqrt(3)*e-n+1)/3]}function o(t){return t>0?1/(1-t):1+t}function s(t){return t>0?1-1/(1.001-t):-t}function l(t,e,n,r){var i=[1,0],a=n.paint["raster-fade-duration"];if(t.source&&a>0){var o=(new Date).getTime(),s=(o-t.timeAdded)/a,l=e?(o-e.timeAdded)/a:-1,c=t.source._pyramid.coveringZoomLevel(r),f=e?Math.abs(e.coord.z-c)>Math.abs(t.coord.z-c):!1;!e||f?(i[0]=u.clamp(s,0,1),i[1]=1-i[0]):(i[0]=u.clamp(1-l,0,1),i[1]=1-i[0])}var h=n.paint["raster-opacity"];return i[0]*=h,i[1]*=h,i}var u=t("../util/util"),c=t("../util/struct_array");e.exports=r,r.RasterBoundsArray=new c({members:[{name:"a_pos",type:"Int16",components:2},{name:"a_texture_pos",type:"Int16",components:2}]})},{"../util/struct_array":117,"../util/util":119}],38:[function(t,e,n){"use strict";function r(t,e,n,r){if(!t.isOpaquePass){var a=!(n.layout["text-allow-overlap"]||n.layout["icon-allow-overlap"]||n.layout["text-ignore-placement"]||n.layout["icon-ignore-placement"]),o=t.gl;a?o.disable(o.STENCIL_TEST):o.enable(o.STENCIL_TEST),t.setDepthSublayer(0),t.depthMask(!1),o.disable(o.DEPTH_TEST),i(t,e,n,r,!1,n.paint["icon-translate"],n.paint["icon-translate-anchor"],n.layout["icon-rotation-alignment"],n.layout["icon-size"],n.paint["icon-halo-width"],n.paint["icon-halo-color"],n.paint["icon-halo-blur"],n.paint["icon-opacity"],n.paint["icon-color"]),i(t,e,n,r,!0,n.paint["text-translate"],n.paint["text-translate-anchor"],n.layout["text-rotation-alignment"],n.layout["text-size"],n.paint["text-halo-width"],n.paint["text-halo-color"],n.paint["text-halo-blur"],n.paint["text-opacity"],n.paint["text-color"]),o.enable(o.DEPTH_TEST),s(t,e,n,r)}}function i(t,e,n,r,i,o,s,u,c,f,h,d,p,m){h=l.premultiply(h),m=l.premultiply(m);for(var g=0;g<r.length;g++){var v=e.getTile(r[g]),y=v.getBucket(n);if(y){var x=y.bufferGroups,_=i?x.glyph:x.icon;_.length&&(t.enableTileClippingMask(r[g]),a(t,n,r[g].posMatrix,v,y,_,i,i||y.sdfIcons,!i&&y.iconsNeedLinear,i?y.adjustedTextSize:y.adjustedIconSize,y.fontstack,o,s,u,c,f,h,d,p,m))}}}function a(t,e,n,r,i,a,s,l,c,f,h,d,p,m,g,v,y,x,_,b){var w,M,k,S=t.gl,T=t.transform,A="map"===m,E=s?24:1,L=g/E;A?(M=u(r,1,t.transform.zoom)*L,k=1/Math.cos(T._pitch),w=[M,M]):(M=t.transform.altitude*L,k=1,w=[T.pixelsToGLUnits[0]*M,T.pixelsToGLUnits[1]*M]);var z=Math.sqrt(T.height*T.height/4*(1+T.altitude*T.altitude)),I=T.height/2*Math.tan(T._pitch),D=(z+I)/z-1;if(s||t.style.sprite.loaded()){var P=t.useProgram(l?"sdf":"icon");if(S.uniformMatrix4fv(P.u_matrix,!1,t.translatePosMatrix(n,r,d,p)),S.uniform1i(P.u_skewed,A),S.uniform1f(P.u_extra,D),S.uniform2fv(P.u_extrude_scale,w),S.activeTexture(S.TEXTURE0),S.uniform1i(P.u_texture,0),s){var C=h&&t.glyphSource.getGlyphAtlas(h);if(!C)return;C.updateTexture(S),S.uniform2f(P.u_texsize,C.width/4,C.height/4)}else{var O=t.options.rotating||t.options.zooming,F=1!==L||o.devicePixelRatio!==t.spriteAtlas.pixelRatio||c,R=A||t.transform.pitch;t.spriteAtlas.bind(S,l||O||F||R),S.uniform2f(P.u_texsize,t.spriteAtlas.width/4,t.spriteAtlas.height/4)}var N=Math.log(g/f)/Math.LN2||0;S.uniform1f(P.u_zoom,10*(t.transform.zoom-N)),S.activeTexture(S.TEXTURE1),t.frameHistory.bind(S),S.uniform1i(P.u_fadetexture,1);var j;if(l){var B=8,q=1.19,V=6,U=.105*E/g/o.devicePixelRatio;if(v){S.uniform1f(P.u_gamma,(x*q/L/B+U)*k),S.uniform4fv(P.u_color,y),S.uniform1f(P.u_opacity,_),S.uniform1f(P.u_buffer,(V-v/L)/B);for(var Z=0;Z<a.length;Z++)j=a[Z],j.vaos[e.id].bind(S,P,j.layout.vertex,j.layout.element),S.drawElements(S.TRIANGLES,3*j.layout.element.length,S.UNSIGNED_SHORT,0)}S.uniform1f(P.u_gamma,U*k),S.uniform4fv(P.u_color,b),S.uniform1f(P.u_opacity,_),S.uniform1f(P.u_buffer,.75);for(var H=0;H<a.length;H++)j=a[H],j.vaos[e.id].bind(S,P,j.layout.vertex,j.layout.element),S.drawElements(S.TRIANGLES,3*j.layout.element.length,S.UNSIGNED_SHORT,0)}else{S.uniform1f(P.u_opacity,_);for(var G=0;G<a.length;G++)j=a[G],j.vaos[e.id].bind(S,P,j.layout.vertex,j.layout.element),S.drawElements(S.TRIANGLES,3*j.layout.element.length,S.UNSIGNED_SHORT,0)}}}var o=t("../util/browser"),s=t("./draw_collision_debug"),l=t("../util/util"),u=t("../source/pixels_to_tile_units");e.exports=r},{"../source/pixels_to_tile_units":47,"../util/browser":105,"../util/util":119,"./draw_collision_debug":33}],39:[function(t,e,n){"use strict";function r(){this.changeTimes=new Float64Array(256),this.changeOpacities=new Uint8Array(256),this.opacities=new Uint8ClampedArray(256),this.array=new Uint8Array(this.opacities.buffer),this.fadeDuration=300,this.previousZoom=0,this.firstFrame=!0}e.exports=r,r.prototype.record=function(t){var e=Date.now();this.firstFrame&&(e=0,this.firstFrame=!1),t=Math.floor(10*t);var n;if(t<this.previousZoom)for(n=t+1;n<=this.previousZoom;n++)this.changeTimes[n]=e,this.changeOpacities[n]=this.opacities[n];else for(n=t;n>this.previousZoom;n--)this.changeTimes[n]=e,this.changeOpacities[n]=this.opacities[n];for(n=0;256>n;n++){var r=e-this.changeTimes[n],i=r/this.fadeDuration*255;t>=n?this.opacities[n]=this.changeOpacities[n]+i:this.opacities[n]=this.changeOpacities[n]-i}this.changed=!0,this.previousZoom=t},r.prototype.bind=function(t){this.texture?(t.bindTexture(t.TEXTURE_2D,this.texture),this.changed&&(t.texSubImage2D(t.TEXTURE_2D,0,0,0,256,1,t.ALPHA,t.UNSIGNED_BYTE,this.array),this.changed=!1)):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.NEAREST),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.NEAREST),t.texImage2D(t.TEXTURE_2D,0,t.ALPHA,256,1,0,t.ALPHA,t.UNSIGNED_BYTE,this.array))}},{}],40:[function(t,e,n){"use strict";function r(t,e){this.width=t,this.height=e,this.nextRow=0,this.bytes=4,this.data=new Uint8Array(this.width*this.height*this.bytes),this.positions={}}e.exports=r,r.prototype.setSprite=function(t){this.sprite=t},r.prototype.getDash=function(t,e){var n=t.join(",")+e;return this.positions[n]||(this.positions[n]=this.addDash(t,e)),this.positions[n]},r.prototype.addDash=function(t,e){var n=e?7:0,r=2*n+1,i=128;if(this.nextRow+r>this.height)return console.warn("LineAtlas out of space"),null;for(var a=0,o=0;o<t.length;o++)a+=t[o];for(var s=this.width/a,l=s/2,u=t.length%2===1,c=-n;n>=c;c++)for(var f=this.nextRow+n+c,h=this.width*f,d=u?-t[t.length-1]:0,p=t[0],m=1,g=0;g<this.width;g++){for(;g/s>p;)d=p,p+=t[m],u&&m===t.length-1&&(p+=t[0]),m++;var v,y=Math.abs(g-d*s),x=Math.abs(g-p*s),_=Math.min(y,x),b=m%2===1;if(e){var w=n?c/n*(l+1):0;if(b){var M=l-Math.abs(w);v=Math.sqrt(_*_+M*M)}else v=l-Math.sqrt(_*_+w*w)}else v=(b?1:-1)*_;this.data[3+4*(h+g)]=Math.max(0,Math.min(255,v+i))}var k={y:(this.nextRow+n+.5)/this.height,height:2*n/this.height,width:a};return this.nextRow+=r,this.dirty=!0,k},r.prototype.bind=function(t){this.texture?(t.bindTexture(t.TEXTURE_2D,this.texture),this.dirty&&(this.dirty=!1,t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width,this.height,t.RGBA,t.UNSIGNED_BYTE,this.data))):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.REPEAT),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.REPEAT),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texImage2D(t.TEXTURE_2D,0,t.RGBA,this.width,this.height,0,t.RGBA,t.UNSIGNED_BYTE,this.data))}},{}],41:[function(t,e,n){"use strict";function r(t,e){this.gl=t,this.transform=e,this.reusableTextures={},this.preFbos={},this.frameHistory=new o,this.setup(),this.numSublayers=s.maxUnderzooming+s.maxOverzooming+1,this.depthEpsilon=1/Math.pow(2,16),this.lineWidthRange=t.getParameter(t.ALIASED_LINE_WIDTH_RANGE)}var i=t("../util/browser"),a=t("gl-matrix").mat4,o=t("./frame_history"),s=t("../source/tile_pyramid"),l=t("../data/bucket").EXTENT,u=t("../source/pixels_to_tile_units"),c=t("../util/util"),f=t("../util/struct_array"),h=t("../data/buffer"),d=t("./vertex_array_object"),p=t("./draw_raster").RasterBoundsArray;e.exports=r,c.extend(r.prototype,t("./painter/use_program")),r.prototype.resize=function(t,e){var n=this.gl;this.width=t*i.devicePixelRatio,this.height=e*i.devicePixelRatio,n.viewport(0,0,this.width,this.height)},r.prototype.setup=function(){var t=this.gl;t.verbose=!0,t.enable(t.BLEND),t.blendFunc(t.ONE,t.ONE_MINUS_SRC_ALPHA),t.enable(t.STENCIL_TEST),t.enable(t.DEPTH_TEST),t.depthFunc(t.LEQUAL),this._depthMask=!1,t.depthMask(!1);var e=this.PosArray=new f({members:[{name:"a_pos",type:"Int16",components:2}]}),n=new e;n.emplaceBack(0,0),n.emplaceBack(l,0),n.emplaceBack(0,l),n.emplaceBack(l,l),this.tileExtentBuffer=new h(n.serialize(),e.serialize(),h.BufferType.VERTEX),this.tileExtentVAO=new d,this.tileExtentPatternVAO=new d;var r=new e;r.emplaceBack(0,0),r.emplaceBack(l,0),r.emplaceBack(l,l),r.emplaceBack(0,l),r.emplaceBack(0,0),this.debugBuffer=new h(r.serialize(),e.serialize(),h.BufferType.VERTEX),this.debugVAO=new d;var i=new p;i.emplaceBack(0,0,0,0),i.emplaceBack(l,0,32767,0),i.emplaceBack(0,l,0,32767),i.emplaceBack(l,l,32767,32767),this.rasterBoundsBuffer=new h(i.serialize(),p.serialize(),h.BufferType.VERTEX),this.rasterBoundsVAO=new d},r.prototype.clearColor=function(){var t=this.gl;t.clearColor(0,0,0,0),t.clear(t.COLOR_BUFFER_BIT)},r.prototype.clearStencil=function(){var t=this.gl;t.clearStencil(0),t.stencilMask(255),t.clear(t.STENCIL_BUFFER_BIT)},r.prototype.clearDepth=function(){var t=this.gl;t.clearDepth(1),this.depthMask(!0),t.clear(t.DEPTH_BUFFER_BIT)},r.prototype._renderTileClippingMasks=function(t){var e=this.gl;e.colorMask(!1,!1,!1,!1),this.depthMask(!1),e.disable(e.DEPTH_TEST),e.enable(e.STENCIL_TEST),e.stencilMask(248),e.stencilOp(e.KEEP,e.KEEP,e.REPLACE);var n=1;this._tileClippingMaskIDs={};for(var r=0;r<t.length;r++){var i=t[r],a=this._tileClippingMaskIDs[i.id]=n++<<3;e.stencilFunc(e.ALWAYS,a,248);var o=this.useProgram("fill");e.uniformMatrix4fv(o.u_matrix,!1,i.posMatrix),this.tileExtentVAO.bind(e,o,this.tileExtentBuffer),e.drawArrays(e.TRIANGLE_STRIP,0,this.tileExtentBuffer.length)}e.stencilMask(0),e.colorMask(!0,!0,!0,!0),this.depthMask(!0),e.enable(e.DEPTH_TEST)},r.prototype.enableTileClippingMask=function(t){var e=this.gl;e.stencilFunc(e.EQUAL,this._tileClippingMaskIDs[t.id],248)},r.prototype.prepareBuffers=function(){},r.prototype.bindDefaultFramebuffer=function(){var t=this.gl;t.bindFramebuffer(t.FRAMEBUFFER,null)};var m={symbol:t("./draw_symbol"),circle:t("./draw_circle"),line:t("./draw_line"),fill:t("./draw_fill"),raster:t("./draw_raster"),background:t("./draw_background"),debug:t("./draw_debug")};r.prototype.render=function(t,e){this.style=t,this.options=e,this.lineAtlas=t.lineAtlas,this.spriteAtlas=t.spriteAtlas,this.spriteAtlas.setSprite(t.sprite),
+-this.glyphSource=t.glyphSource,this.frameHistory.record(this.transform.zoom),this.prepareBuffers(),this.clearColor(),this.clearDepth(),this.showOverdrawInspector(e.showOverdrawInspector),this.depthRange=(t._order.length+2)*this.numSublayers*this.depthEpsilon,this.renderPass({isOpaquePass:!0}),this.renderPass({isOpaquePass:!1})},r.prototype.renderPass=function(t){var e=this.style._groups,n=t.isOpaquePass;this.currentLayer=n?this.style._order.length:-1;for(var r=0;r<e.length;r++){var i,a=e[n?e.length-1-r:r],o=this.style.sources[a.source],s=[];if(o){for(s=o.getVisibleCoordinates(),i=0;i<s.length;i++)s[i].posMatrix=this.transform.calculatePosMatrix(s[i],o.maxzoom);this.clearStencil(),o.prepare&&o.prepare(),o.isTileClipped&&this._renderTileClippingMasks(s)}for(n?(this._showOverdrawInspector||this.gl.disable(this.gl.BLEND),this.isOpaquePass=!0):(this.gl.enable(this.gl.BLEND),this.isOpaquePass=!1,s.reverse()),i=0;i<a.length;i++){var l=a[n?a.length-1-i:i];this.currentLayer+=n?-1:1,this.renderLayer(this,o,l,s)}o&&m.debug(this,o,s)}},r.prototype.depthMask=function(t){t!==this._depthMask&&(this._depthMask=t,this.gl.depthMask(t))},r.prototype.renderLayer=function(t,e,n,r){n.isHidden(this.transform.zoom)||("background"===n.type||r.length)&&(this.id=n.id,m[n.type](t,e,n,r))},r.prototype.setDepthSublayer=function(t){var e=1-((1+this.currentLayer)*this.numSublayers+t)*this.depthEpsilon,n=e-1+this.depthRange;this.gl.depthRange(n,e)},r.prototype.translatePosMatrix=function(t,e,n,r){if(!n[0]&&!n[1])return t;if("viewport"===r){var i=Math.sin(-this.transform.angle),o=Math.cos(-this.transform.angle);n=[n[0]*o-n[1]*i,n[0]*i+n[1]*o]}var s=[u(e,n[0],this.transform.zoom),u(e,n[1],this.transform.zoom),0],l=new Float32Array(16);return a.translate(l,t,s),l},r.prototype.saveTexture=function(t){var e=this.reusableTextures[t.size];e?e.push(t):this.reusableTextures[t.size]=[t]},r.prototype.getTexture=function(t){var e=this.reusableTextures[t];return e&&e.length>0?e.pop():null},r.prototype.lineWidth=function(t){this.gl.lineWidth(c.clamp(t,this.lineWidthRange[0],this.lineWidthRange[1]))},r.prototype.showOverdrawInspector=function(t){if(t||this._showOverdrawInspector){this._showOverdrawInspector=t;var e=this.gl;if(t){e.blendFunc(e.CONSTANT_COLOR,e.ONE);var n=8,r=1/n;e.blendColor(r,r,r,0),e.clearColor(0,0,0,1),e.clear(e.COLOR_BUFFER_BIT)}else e.blendFunc(e.ONE,e.ONE_MINUS_SRC_ALPHA)}}},{"../data/bucket":17,"../data/buffer":22,"../source/pixels_to_tile_units":47,"../source/tile_pyramid":52,"../util/browser":105,"../util/struct_array":117,"../util/util":119,"./draw_background":31,"./draw_circle":32,"./draw_debug":34,"./draw_fill":35,"./draw_line":36,"./draw_raster":37,"./draw_symbol":38,"./frame_history":39,"./painter/use_program":42,"./vertex_array_object":43,"gl-matrix":133}],42:[function(t,e,n){"use strict";var r=(t("path"),t("assert")),i=t("../../util/util"),a={debug:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\n\nvoid main() {\n    gl_FragColor = u_color;\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1);\n}\n"},fill:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvoid main() {\n    gl_FragColor = u_color * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n"},circle:{fragmentSource:"precision mediump float;\n\nuniform lowp float u_blur;\nuniform lowp float u_opacity;\n\nvarying lowp vec4 v_color;\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main() {\n    float t = smoothstep(1.0 - max(u_blur, v_antialiasblur), 1.0, length(v_extrude));\n    gl_FragColor = v_color * (1.0 - t) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_extrude_scale;\nuniform float u_devicepixelratio;\n\nattribute vec2 a_pos;\n\n#ifdef ATTRIBUTE_A_COLOR\nattribute lowp vec4 a_color;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\nuniform lowp float u_color_t;\nattribute lowp vec4 a_color0;\nattribute lowp vec4 a_color1;\nattribute lowp vec4 a_color2;\nattribute lowp vec4 a_color3;\n#else\nuniform lowp vec4 a_color;\n#endif\n\n#ifdef ATTRIBUTE_A_RADIUS\nattribute mediump float a_radius;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\nuniform lowp float u_radius_t;\nattribute mediump vec4 a_radius;\n#else\nuniform mediump float a_radius;\n#endif\n\nvarying vec2 v_extrude;\nvarying lowp vec4 v_color;\nvarying lowp float v_antialiasblur;\n\nfloat evaluate_zoom_function_1(const vec4 values, const float t) {\n    if (t < 1.0) {\n        return mix(values[0], values[1], t);\n    } else if (t < 2.0) {\n        return mix(values[1], values[2], t - 1.0);\n    } else {\n        return mix(values[2], values[3], t - 2.0);\n    }\n}\n\nvec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) {\n    if (t < 1.0) {\n        return mix(value0, value1, t);\n    } else if (t < 2.0) {\n        return mix(value1, value2, t - 1.0);\n    } else {\n        return mix(value2, value3, t - 2.0);\n    }\n}\n\nvoid main(void) {\n\n#ifdef ATTRIBUTE_A_RADIUS\n    mediump float radius = a_radius / 10.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\n    mediump float radius = evaluate_zoom_function_1(a_radius, u_radius_t) / 10.0;\n#else\n    mediump float radius = a_radius;\n#endif\n\n    // unencode the extrusion vector that we snuck into the a_pos vector\n    v_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);\n\n    vec2 extrude = v_extrude * radius * u_extrude_scale;\n    // multiply a_pos by 0.5, since we had it * 2 in order to sneak\n    // in extrusion data\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1);\n\n    // gl_Position is divided by gl_Position.w after this shader runs.\n    // Multiply the extrude by it so that it isn't affected by it.\n    gl_Position.xy += extrude * gl_Position.w;\n\n#ifdef ATTRIBUTE_A_COLOR\n    v_color = a_color / 255.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\n    v_color = evaluate_zoom_function_4(a_color0, a_color1, a_color2, a_color3, u_color_t) / 255.0;\n#else\n    v_color = a_color;\n#endif\n\n    // This is a minimum blur distance that serves as a faux-antialiasing for\n    // the circle. since blur is a ratio of the circle's size and the intent is\n    // to keep the blur at roughly 1px, the two are inversely related.\n    v_antialiasblur = 1.0 / u_devicepixelratio / radius;\n}\n"},line:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"},linepattern:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform float u_point;\nuniform float u_blur;\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_fade;\nuniform float u_opacity;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0);\n    float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0);\n    float y_a = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_a.y);\n    float y_b = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_b.y);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, vec2(x_a, y_a));\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, vec2(x_b, y_b));\n\n    vec4 color = mix(texture2D(u_image, pos), texture2D(u_image, pos2), u_fade);\n\n    alpha *= u_opacity;\n\n    gl_FragColor = color * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 extrude = a_extrude * scale;\n    mediump vec2 dist = u_linewidth.s * extrude;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n    v_linesofar = a_linesofar;\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"},linesdfpattern:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\nuniform sampler2D u_image;\nuniform float u_sdfgamma;\nuniform float u_mix;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float sdfdist_a = texture2D(u_image, v_tex_a).a;\n    float sdfdist_b = texture2D(u_image, v_tex_b).a;\n    float sdfdist = mix(sdfdist_a, sdfdist_b, u_mix);\n    alpha *= smoothstep(0.5 - u_sdfgamma, 0.5 + u_sdfgamma, sdfdist);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump vec2 u_linewidth;\nuniform mediump float u_ratio;\nuniform vec2 u_patternscale_a;\nuniform float u_tex_y_a;\nuniform vec2 u_patternscale_b;\nuniform float u_tex_y_b;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    v_tex_a = vec2(a_linesofar * u_patternscale_a.x, normal.y * u_patternscale_a.y + u_tex_y_a);\n    v_tex_b = vec2(a_linesofar * u_patternscale_b.x, normal.y * u_patternscale_b.y + u_tex_y_b);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"},outline:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"},outlinepattern:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    // find distance to outline for alpha interpolation\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    \n\n    gl_FragColor = mix(color1, color2, u_mix) * alpha * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"},pattern:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    gl_FragColor = mix(color1, color2, u_mix) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n}\n"},raster:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity0;\nuniform float u_opacity1;\nuniform sampler2D u_image0;\nuniform sampler2D u_image1;\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nuniform float u_brightness_low;\nuniform float u_brightness_high;\n\nuniform float u_saturation_factor;\nuniform float u_contrast_factor;\nuniform vec3 u_spin_weights;\n\nvoid main() {\n\n    // read and cross-fade colors from the main and parent tiles\n    vec4 color0 = texture2D(u_image0, v_pos0);\n    vec4 color1 = texture2D(u_image1, v_pos1);\n    vec4 color = color0 * u_opacity0 + color1 * u_opacity1;\n    vec3 rgb = color.rgb;\n\n    // spin\n    rgb = vec3(\n        dot(rgb, u_spin_weights.xyz),\n        dot(rgb, u_spin_weights.zxy),\n        dot(rgb, u_spin_weights.yzx));\n\n    // saturation\n    float average = (color.r + color.g + color.b) / 3.0;\n    rgb += (average - rgb) * u_saturation_factor;\n\n    // contrast\n    rgb = (rgb - 0.5) * u_contrast_factor + 0.5;\n\n    // brightness\n    vec3 u_high_vec = vec3(u_brightness_low, u_brightness_low, u_brightness_low);\n    vec3 u_low_vec = vec3(u_brightness_high, u_brightness_high, u_brightness_high);\n\n    gl_FragColor = vec4(mix(u_high_vec, u_low_vec, rgb), color.a);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_tl_parent;\nuniform float u_scale_parent;\nuniform float u_buffer_scale;\n\nattribute vec2 a_pos;\nattribute vec2 a_texture_pos;\n\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5;\n    v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent;\n}\n"},icon:{fragmentSource:"precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp float u_opacity;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * u_opacity;\n    gl_FragColor = texture2D(u_texture, v_tex) * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"},sdf:{fragmentSource:"precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform lowp float u_buffer;\nuniform lowp float u_gamma;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    lowp float dist = texture2D(u_texture, v_tex).a;\n    lowp float fade_alpha = texture2D(u_fadetexture, v_fade_tex).a;\n    lowp float gamma = u_gamma * v_gamma_scale;\n    lowp float alpha = smoothstep(u_buffer - gamma, u_buffer + gamma, dist) * fade_alpha;\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - y * u_extra);\n    v_gamma_scale = perspective_scale;\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"},collisionbox:{fragmentSource:"precision mediump float;\n\nuniform float u_zoom;\nuniform float u_maxzoom;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n\n    float alpha = 0.5;\n\n    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha;\n\n    if (v_placement_zoom > u_zoom) {\n        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha;\n    }\n\n    if (u_zoom >= v_max_zoom) {\n        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25;\n    }\n\n    if (v_placement_zoom >= u_maxzoom) {\n        gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2;\n    }\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_extrude;\nattribute vec2 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_scale;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n     gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0);\n\n     v_max_zoom = a_data.x;\n     v_placement_zoom = a_data.y;\n}\n"}};e.exports._createProgram=function(t,e){var n=this.gl,o=n.createProgram(),s=a[t],l="";if(e)for(var u=0;u<e.length;u++)l+="#define "+e[u]+"\n";var c=n.createShader(n.FRAGMENT_SHADER);n.shaderSource(c,l+s.fragmentSource),n.compileShader(c),r(n.getShaderParameter(c,n.COMPILE_STATUS),n.getShaderInfoLog(c)),n.attachShader(o,c);var f=n.createShader(n.VERTEX_SHADER);n.shaderSource(f,l+s.vertexSource),n.compileShader(f),r(n.getShaderParameter(f,n.COMPILE_STATUS),n.getShaderInfoLog(f)),n.attachShader(o,f),n.linkProgram(o),r(n.getProgramParameter(o,n.LINK_STATUS),n.getProgramInfoLog(o));for(var h={},d=n.getProgramParameter(o,n.ACTIVE_ATTRIBUTES),p=0;d>p;p++){var m=n.getActiveAttrib(o,p);h[m.name]=p}for(var g={},v=n.getProgramParameter(o,n.ACTIVE_UNIFORMS),y=0;v>y;y++){var x=n.getActiveUniform(o,y);g[x.name]=n.getUniformLocation(o,x.name)}return i.extend({program:o,definition:s,attributes:h,numAttributes:d},h,g)},e.exports._createProgramCached=function(t,e){this.cache=this.cache||{},this._showOverdrawInspector&&(e=e||[],e.push("OVERDRAW_INSPECTOR"));var n=JSON.stringify({name:t,macros:e});return this.cache[n]||(this.cache[n]=this._createProgram(t,e)),this.cache[n]},e.exports.useProgram=function(t,e){var n=this.gl,r=this._createProgramCached(t,e),i=this.currentProgram;return i!==r&&(n.useProgram(r.program),this.currentProgram=r),r}},{"../../util/util":119,assert:6,path:9}],43:[function(t,e,n){"use strict";function r(){this.boundProgram=null,this.boundVertexBuffer=null,this.boundVertexBuffer2=null,this.boundElementBuffer=null,this.vao=null}var i=t("assert");e.exports=r;var a=!1;r.prototype.bind=function(t,e,n,r,o){var s=t.extVertexArrayObject;if(void 0===s&&(s=t.extVertexArrayObject=t.getExtension("OES_vertex_array_object")),s?(this.vao||(this.vao=s.createVertexArrayOES()),s.bindVertexArrayOES(this.vao)):a||(console.warn("Not using VertexArrayObject extension."),a=!0),this.boundProgram)i(this.boundProgram===e,"trying to bind a VAO to a different shader"),i(this.boundVertexBuffer===n,"trying to bind a VAO to a different vertex buffer"),i(this.boundVertexBuffer2===o,"trying to bind a VAO to a different vertex buffer"),i(this.boundElementBuffer===r,"trying to bind a VAO to a different element buffer");else{var l,u=s?0:t.currentNumAttributes||0,c=e.numAttributes;for(l=u;c>l;l++)t.enableVertexAttribArray(l);if(!s){for(i(l>0),l=c;u>l;l++)t.disableVertexAttribArray(l);t.currentNumAttributes=c}n.bind(t),n.setVertexAttribPointers(t,e),o&&(o.bind(t),o.setVertexAttribPointers(t,e)),r&&r.bind(t),s&&(this.boundProgram=e,this.boundVertexBuffer=n,this.boundVertexBuffer2=o,this.boundElementBuffer=r)}},r.prototype.unbind=function(t){var e=t.extVertexArrayObject;e&&e.bindVertexArrayOES(null)},r.prototype.destroy=function(t){var e=t.extVertexArrayObject;e&&this.vao&&(e.deleteVertexArrayOES(this.vao),this.vao=null)}},{assert:6}],44:[function(t,e,n){"use strict";function r(t){t=t||{},this._data=t.data,void 0!==t.maxzoom&&(this.maxzoom=t.maxzoom);var e=u/this.tileSize;this.geojsonVtOptions={buffer:(void 0!==t.buffer?t.buffer:128)*e,tolerance:(void 0!==t.tolerance?t.tolerance:.375)*e,extent:u,maxZoom:this.maxzoom},this.cluster=t.cluster||!1,
+-this.superclusterOptions={maxZoom:Math.min(t.clusterMaxZoom,this.maxzoom-1)||this.maxzoom-1,extent:u,radius:(t.clusterRadius||50)*e,log:!1},this._pyramid=new o({tileSize:this.tileSize,minzoom:this.minzoom,maxzoom:this.maxzoom,reparseOverscaled:!0,load:this._loadTile.bind(this),abort:this._abortTile.bind(this),unload:this._unloadTile.bind(this),add:this._addTile.bind(this),remove:this._removeTile.bind(this),redoPlacement:this._redoTilePlacement.bind(this)})}var i=t("../util/util"),a=t("../util/evented"),o=t("./tile_pyramid"),s=t("./source"),l=t("resolve-url"),u=t("../data/bucket").EXTENT;e.exports=r,r.prototype=i.inherit(a,{minzoom:0,maxzoom:18,tileSize:512,_dirty:!0,isTileClipped:!0,setData:function(t){return this._data=t,this._dirty=!0,this.fire("change"),this.map&&this.update(this.map.transform),this},onAdd:function(t){this.map=t},loaded:function(){return this._loaded&&this._pyramid.loaded()},update:function(t){this._dirty&&this._updateData(),this._loaded&&this._pyramid.update(this.used,t)},reload:function(){this._loaded&&this._pyramid.reload()},serialize:function(){return{type:"geojson",data:this._data}},getVisibleCoordinates:s._getVisibleCoordinates,getTile:s._getTile,queryRenderedFeatures:s._queryRenderedVectorFeatures,querySourceFeatures:s._querySourceFeatures,_updateData:function(){this._dirty=!1;var t={tileSize:this.tileSize,source:this.id,geojsonVtOptions:this.geojsonVtOptions,cluster:this.cluster,superclusterOptions:this.superclusterOptions},e=this._data;"string"==typeof e?t.url="undefined"!=typeof window?l(window.location.href,e):e:t.data=JSON.stringify(e),this.workerID=this.dispatcher.send("parse geojson",t,function(t){this._loaded=!0,t?this.fire("error",{error:t}):(this._pyramid.reload(),this.fire("change"))}.bind(this))},_loadTile:function(t){var e=t.coord.z>this.maxzoom?Math.pow(2,t.coord.z-this.maxzoom):1,n={uid:t.uid,coord:t.coord,zoom:t.coord.z,maxZoom:this.maxzoom,tileSize:this.tileSize,source:this.id,overscaling:e,angle:this.map.transform.angle,pitch:this.map.transform.pitch,showCollisionBoxes:this.map.showCollisionBoxes};t.workerID=this.dispatcher.send("load geojson tile",n,function(e,n){if(t.unloadVectorData(this.map.painter),!t.aborted){if(e)return void this.fire("tile.error",{tile:t});t.loadVectorData(n,this.map.style),t.redoWhenDone&&(t.redoWhenDone=!1,t.redoPlacement(this)),this.fire("tile.load",{tile:t})}}.bind(this),this.workerID)},_abortTile:function(t){t.aborted=!0},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.unloadVectorData(this.map.painter),this.dispatcher.send("remove tile",{uid:t.uid,source:this.id},null,t.workerID)},redoPlacement:s.redoPlacement,_redoTilePlacement:function(t){t.redoPlacement(this)}})},{"../data/bucket":17,"../util/evented":111,"../util/util":119,"./source":49,"./tile_pyramid":52,"resolve-url":175}],45:[function(t,e,n){"use strict";function r(t){this.features=t,this.length=t.length,this.extent=s}function i(t){this.type=t.type,this.rawGeometry=1===t.type?[t.geometry]:t.geometry,this.properties=t.tags,this.extent=s}var a=t("point-geometry"),o=t("vector-tile").VectorTileFeature,s=t("../data/bucket").EXTENT;e.exports=r,r.prototype.feature=function(t){return new i(this.features[t])},i.prototype.loadGeometry=function(){var t=this.rawGeometry;this.geometry=[];for(var e=0;e<t.length;e++){for(var n=t[e],r=[],i=0;i<n.length;i++)r.push(new a(n[i][0],n[i][1]));this.geometry.push(r)}return this.geometry},i.prototype.bbox=function(){this.geometry||this.loadGeometry();for(var t=this.geometry,e=1/0,n=-(1/0),r=1/0,i=-(1/0),a=0;a<t.length;a++)for(var o=t[a],s=0;s<o.length;s++){var l=o[s];e=Math.min(e,l.x),n=Math.max(n,l.x),r=Math.min(r,l.y),i=Math.max(i,l.y)}return[e,r,n,i]},i.prototype.toGeoJSON=o.prototype.toGeoJSON},{"../data/bucket":17,"point-geometry":174,"vector-tile":183}],46:[function(t,e,n){"use strict";function r(t){this.urls=t.urls,this.coordinates=t.coordinates,c.getImage(t.url,function(e,n){e||(this.image=n,this.image.addEventListener("load",function(){this.map._rerender()}.bind(this)),this._loaded=!0,this.map&&this.setCoordinates(t.coordinates))}.bind(this))}var i=t("../util/util"),a=t("./tile"),o=t("./tile_coord"),s=t("../geo/lng_lat"),l=t("point-geometry"),u=t("../util/evented"),c=t("../util/ajax"),f=t("../data/bucket").EXTENT,h=t("../render/draw_raster").RasterBoundsArray,d=t("../data/buffer"),p=t("../render/vertex_array_object");e.exports=r,r.prototype=i.inherit(u,{onAdd:function(t){this.map=t,this.image&&this.setCoordinates(this.coordinates)},setCoordinates:function(t){this.coordinates=t;var e=this.map,n=t.map(function(t){return e.transform.locationCoordinate(s.convert(t)).zoomTo(0)}),r=this.centerCoord=i.getCoordinatesCenter(n);r.column=Math.round(r.column),r.row=Math.round(r.row);var u=n.map(function(t){var e=t.zoomTo(r.zoom);return new l(Math.round((e.column-r.column)*f),Math.round((e.row-r.row)*f))}),c=32767,m=new h;return m.emplaceBack(u[0].x,u[0].y,0,0),m.emplaceBack(u[1].x,u[1].y,c,0),m.emplaceBack(u[3].x,u[3].y,0,c),m.emplaceBack(u[2].x,u[2].y,c,c),this.tile=new a(new o(r.zoom,r.column,r.row)),this.tile.buckets={},this.tile.boundsBuffer=new d(m.serialize(),h.serialize(),d.BufferType.VERTEX),this.tile.boundsVAO=new p,this.fire("change"),this},loaded:function(){return this.image&&this.image.complete},update:function(){},reload:function(){},prepare:function(){if(this._loaded&&this.loaded()){var t=this.map.painter,e=t.gl;this.tile.texture?(e.bindTexture(e.TEXTURE_2D,this.tile.texture),e.texSubImage2D(e.TEXTURE_2D,0,0,0,e.RGBA,e.UNSIGNED_BYTE,this.image)):(this.tile.texture=e.createTexture(),e.bindTexture(e.TEXTURE_2D,this.tile.texture),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_S,e.CLAMP_TO_EDGE),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_T,e.CLAMP_TO_EDGE),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MIN_FILTER,e.LINEAR),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MAG_FILTER,e.LINEAR),e.texImage2D(e.TEXTURE_2D,0,e.RGBA,e.RGBA,e.UNSIGNED_BYTE,this.image))}},getVisibleCoordinates:function(){return this.tile?[this.tile.coord]:[]},getTile:function(){return this.tile},serialize:function(){return{type:"image",urls:this.urls,coordinates:this.coordinates}}})},{"../data/bucket":17,"../data/buffer":22,"../geo/lng_lat":26,"../render/draw_raster":37,"../render/vertex_array_object":43,"../util/ajax":104,"../util/evented":111,"../util/util":119,"./tile":50,"./tile_coord":51,"point-geometry":174}],47:[function(t,e,n){"use strict";var r=t("../data/bucket");e.exports=function(t,e,n){return e*(r.EXTENT/(t.tileSize*Math.pow(2,n-t.coord.z)))}},{"../data/bucket":17}],48:[function(t,e,n){"use strict";function r(t){i.extend(this,i.pick(t,["url","tileSize"])),s._loadTileJSON.call(this,t)}var i=t("../util/util"),a=t("../util/ajax"),o=t("../util/evented"),s=t("./source"),l=t("../util/mapbox").normalizeTileURL;e.exports=r,r.prototype=i.inherit(o,{minzoom:0,maxzoom:22,roundZoom:!0,tileSize:512,_loaded:!1,onAdd:function(t){this.map=t},loaded:function(){return this._pyramid&&this._pyramid.loaded()},update:function(t){this._pyramid&&this._pyramid.update(this.used,t,this.map.style.rasterFadeDuration)},reload:function(){},serialize:function(){return{type:"raster",url:this.url,tileSize:this.tileSize}},getVisibleCoordinates:s._getVisibleCoordinates,getTile:s._getTile,_loadTile:function(t){function e(e,n){if(delete t.request,!t.aborted){if(e)return t.errored=!0,void this.fire("tile.error",{tile:t,error:e});var r=this.map.painter.gl;t.texture=this.map.painter.getTexture(n.width),t.texture?(r.bindTexture(r.TEXTURE_2D,t.texture),r.texSubImage2D(r.TEXTURE_2D,0,0,0,r.RGBA,r.UNSIGNED_BYTE,n)):(t.texture=r.createTexture(),r.bindTexture(r.TEXTURE_2D,t.texture),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_MIN_FILTER,r.LINEAR_MIPMAP_NEAREST),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_MAG_FILTER,r.LINEAR),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_WRAP_S,r.CLAMP_TO_EDGE),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_WRAP_T,r.CLAMP_TO_EDGE),r.pixelStorei(r.UNPACK_PREMULTIPLY_ALPHA_WEBGL,!0),r.texImage2D(r.TEXTURE_2D,0,r.RGBA,r.RGBA,r.UNSIGNED_BYTE,n),t.texture.size=n.width),r.generateMipmap(r.TEXTURE_2D),t.timeAdded=(new Date).getTime(),this.map.animationLoop.set(this.style.rasterFadeDuration),t.source=this,t.loaded=!0,this.fire("tile.load",{tile:t})}}var n=l(t.coord.url(this.tiles),this.url,this.tileSize);t.request=a.getImage(n,e.bind(this))},_abortTile:function(t){t.aborted=!0,t.request&&(t.request.abort(),delete t.request)},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.texture&&this.map.painter.saveTexture(t.texture)}})},{"../util/ajax":104,"../util/evented":111,"../util/mapbox":116,"../util/util":119,"./source":49}],49:[function(t,e,n){"use strict";function r(t,e){var n=t.tile.coord,r=e.tile.coord;return n.z-r.z||n.y-r.y||n.x-r.x}function i(t){for(var e=t[0]||{},n=1;n<t.length;n++){var r=t[n];for(var i in r){var a=r[i],o=e[i];if(void 0===o)o=e[i]=a;else for(var s=0;s<a.length;s++)o.push(a[s])}}return e}var a=t("../util/util"),o=t("../util/ajax"),s=t("../util/browser"),l=t("./tile_pyramid"),u=t("../util/mapbox").normalizeSourceURL,c=t("./tile_coord");n._loadTileJSON=function(t){var e=function(t,e){return t?void this.fire("error",{error:t}):(a.extend(this,a.pick(e,["tiles","minzoom","maxzoom","attribution"])),e.vector_layers&&(this.vectorLayers=e.vector_layers,this.vectorLayerIds=this.vectorLayers.map(function(t){return t.id})),this._pyramid=new l({tileSize:this.tileSize,minzoom:this.minzoom,maxzoom:this.maxzoom,roundZoom:this.roundZoom,reparseOverscaled:this.reparseOverscaled,load:this._loadTile.bind(this),abort:this._abortTile.bind(this),unload:this._unloadTile.bind(this),add:this._addTile.bind(this),remove:this._removeTile.bind(this),redoPlacement:this._redoTilePlacement?this._redoTilePlacement.bind(this):void 0}),void this.fire("load"))}.bind(this);t.url?o.getJSON(u(t.url),e):s.frame(e.bind(this,null,t))},n.redoPlacement=function(){if(this._pyramid)for(var t=this._pyramid.orderedIDs(),e=0;e<t.length;e++){var n=this._pyramid.getTile(t[e]);this._redoTilePlacement(n)}},n._getTile=function(t){return this._pyramid.getTile(t.id)},n._getVisibleCoordinates=function(){return this._pyramid?this._pyramid.renderedIDs().map(c.fromID):[]},n._queryRenderedVectorFeatures=function(t,e,n,a){if(!this._pyramid)return{};var o=this._pyramid.tilesIn(t);o.sort(r);for(var s=this.map.style._layers,l=[],u=0;u<o.length;u++){var c=o[u];c.tile.featureIndex&&l.push(c.tile.featureIndex.query({queryGeometry:c.queryGeometry,scale:c.scale,tileSize:c.tile.tileSize,bearing:a,params:e},s))}return i(l)},n._querySourceFeatures=function(t){if(!this._pyramid)return[];for(var e=this._pyramid,n=e.renderedIDs().map(function(t){return e.getTile(t)}),r=[],i={},a=0;a<n.length;a++){var o=n[a],s=new c(Math.min(o.sourceMaxZoom,o.coord.z),o.coord.x,o.coord.y,0).id;i[s]||(i[s]=!0,o.querySourceFeatures(r,t))}return r},n.create=function(e){var r={vector:t("./vector_tile_source"),raster:t("./raster_tile_source"),geojson:t("./geojson_source"),video:t("./video_source"),image:t("./image_source")};return n.is(e)?e:new r[e.type](e)},n.is=function(e){var n={vector:t("./vector_tile_source"),raster:t("./raster_tile_source"),geojson:t("./geojson_source"),video:t("./video_source"),image:t("./image_source")};for(var r in n)if(e instanceof n[r])return!0;return!1}},{"../util/ajax":104,"../util/browser":105,"../util/mapbox":116,"../util/util":119,"./geojson_source":44,"./image_source":46,"./raster_tile_source":48,"./tile_coord":51,"./tile_pyramid":52,"./vector_tile_source":53,"./video_source":54}],50:[function(t,e,n){"use strict";function r(t,e,n){this.coord=t,this.uid=a.uniqueId(),this.loaded=!1,this.isUnloaded=!1,this.uses=0,this.tileSize=e,this.sourceMaxZoom=n,this.buckets={}}function i(t,e){for(var n={},r=0;r<t.length;r++){var i=e.getLayer(t[r].layerId);if(i){var s=o.create(a.extend({layer:i,childLayers:t[r].childLayerIds.map(e.getLayer.bind(e)).filter(function(t){return t})},t[r]));n[s.id]=s}}return n}var a=t("../util/util"),o=t("../data/bucket"),s=t("../data/feature_index"),l=t("vector-tile"),u=t("pbf"),c=t("../util/vectortile_to_geojson"),f=t("feature-filter"),h=t("../symbol/collision_tile"),d=t("../symbol/collision_box");e.exports=r,r.prototype={loadVectorData:function(t,e){this.loaded=!0,t&&(this.collisionBoxArray=new d(t.collisionBoxArray),this.collisionTile=new h(t.collisionTile,this.collisionBoxArray),this.featureIndex=new s(t.featureIndex,t.rawTileData,this.collisionTile),this.rawTileData=t.rawTileData,this.buckets=i(t.buckets,e))},reloadSymbolData:function(t,e,n){if(!this.isUnloaded){this.collisionTile=new h(t.collisionTile,this.collisionBoxArray),this.featureIndex.setCollisionTile(this.collisionTile);for(var r in this.buckets){var o=this.buckets[r];"symbol"===o.type&&(o.destroy(e.gl),delete this.buckets[r])}a.extend(this.buckets,i(t.buckets,n))}},unloadVectorData:function(t){for(var e in this.buckets){var n=this.buckets[e];n.destroy(t.gl)}this.collisionBoxArray=null,this.collisionTile=null,this.featureIndex=null,this.rawTileData=null,this.buckets=null,this.loaded=!1,this.isUnloaded=!0},redoPlacement:function(t){function e(e,n){this.reloadSymbolData(n,t.map.painter,t.map.style),t.fire("tile.load",{tile:this}),this.redoingPlacement=!1,this.redoWhenDone&&(this.redoPlacement(t),this.redoWhenDone=!1)}return!this.loaded||this.redoingPlacement?void(this.redoWhenDone=!0):(this.redoingPlacement=!0,void t.dispatcher.send("redo placement",{uid:this.uid,source:t.id,angle:t.map.transform.angle,pitch:t.map.transform.pitch,showCollisionBoxes:t.map.showCollisionBoxes},e.bind(this),this.workerID))},getBucket:function(t){return this.buckets&&this.buckets[t.ref||t.id]},querySourceFeatures:function(t,e){if(this.rawTileData){this.vtLayers||(this.vtLayers=new l.VectorTile(new u(new Uint8Array(this.rawTileData))).layers);var n=this.vtLayers._geojsonTileLayer||this.vtLayers[e.sourceLayer];if(n)for(var r=f(e.filter),i={z:this.coord.z,x:this.coord.x,y:this.coord.y},a=0;a<n.length;a++){var o=n.feature(a);if(r(o)){var s=new c(o,this.coord.z,this.coord.x,this.coord.y);s.tile=i,t.push(s)}}}}}},{"../data/bucket":17,"../data/feature_index":23,"../symbol/collision_box":76,"../symbol/collision_tile":78,"../util/util":119,"../util/vectortile_to_geojson":120,"feature-filter":122,pbf:172,"vector-tile":183}],51:[function(t,e,n){"use strict";function r(t,e,n,r){s(!isNaN(t)&&t>=0&&t%1===0),s(!isNaN(e)&&e>=0&&e%1===0),s(!isNaN(n)&&n>=0&&n%1===0),isNaN(r)&&(r=0),this.z=+t,this.x=+e,this.y=+n,this.w=+r,r*=2,0>r&&(r=-1*r-1);var i=1<<this.z;this.id=32*(i*i*r+i*this.y+this.x)+this.z,this.posMatrix=null}function i(t,e){if(t.row>e.row){var n=t;t=e,e=n}return{x0:t.column,y0:t.row,x1:e.column,y1:e.row,dx:e.column-t.column,dy:e.row-t.row}}function a(t,e,n,r,i){var a=Math.max(n,Math.floor(e.y0)),o=Math.min(r,Math.ceil(e.y1));if(t.x0===e.x0&&t.y0===e.y0?t.x0+e.dy/t.dy*t.dx<e.x1:t.x1-e.dy/t.dy*t.dx<e.x0){var s=t;t=e,e=s}for(var l=t.dx/t.dy,u=e.dx/e.dy,c=t.dx>0,f=e.dx<0,h=a;o>h;h++){var d=l*Math.max(0,Math.min(t.dy,h+c-t.y0))+t.x0,p=u*Math.max(0,Math.min(e.dy,h+f-e.y0))+e.x0;i(Math.floor(p),Math.ceil(d),h)}}function o(t,e,n,r,o,s){var l,u=i(t,e),c=i(e,n),f=i(n,t);u.dy>c.dy&&(l=u,u=c,c=l),u.dy>f.dy&&(l=u,u=f,f=l),c.dy>f.dy&&(l=c,c=f,f=l),u.dy&&a(f,u,r,o,s),c.dy&&a(f,c,r,o,s)}var s=t("assert"),l=t("../geo/coordinate");e.exports=r,r.prototype.toString=function(){return this.z+"/"+this.x+"/"+this.y},r.prototype.toCoordinate=function(t){var e=Math.min(this.z,t),n=Math.pow(2,e),r=this.y,i=this.x+n*this.w;return new l(i,r,e)},r.fromID=function(t){var e=t%32,n=1<<e,i=(t-e)/32,a=i%n,o=(i-a)/n%n,s=Math.floor(i/(n*n));return s%2!==0&&(s=-1*s-1),s/=2,new r(e,a,o,s)},r.prototype.url=function(t,e){return t[(this.x+this.y)%t.length].replace("{prefix}",(this.x%16).toString(16)+(this.y%16).toString(16)).replace("{z}",Math.min(this.z,e||this.z)).replace("{x}",this.x).replace("{y}",this.y)},r.prototype.parent=function(t){return 0===this.z?null:this.z>t?new r(this.z-1,this.x,this.y,this.w):new r(this.z-1,Math.floor(this.x/2),Math.floor(this.y/2),this.w)},r.prototype.wrapped=function(){return new r(this.z,this.x,this.y,0)},r.prototype.children=function(t){if(this.z>=t)return[new r(this.z+1,this.x,this.y,this.w)];var e=this.z+1,n=2*this.x,i=2*this.y;return[new r(e,n,i,this.w),new r(e,n+1,i,this.w),new r(e,n,i+1,this.w),new r(e,n+1,i+1,this.w)]},r.cover=function(t,e,n){function i(t,e,i){var o,l,u;if(i>=0&&a>=i)for(o=t;e>o;o++)l=(o%a+a)%a,u=new r(n,l,i,Math.floor(o/a)),s[u.id]=u}var a=1<<t,s={};return o(e[0],e[1],e[2],0,a,i),o(e[2],e[3],e[0],0,a,i),Object.keys(s).map(function(t){return s[t]})}},{"../geo/coordinate":25,assert:6}],52:[function(t,e,n){"use strict";function r(t){this.tileSize=t.tileSize,this.minzoom=t.minzoom,this.maxzoom=t.maxzoom,this.roundZoom=t.roundZoom,this.reparseOverscaled=t.reparseOverscaled,this._load=t.load,this._abort=t.abort,this._unload=t.unload,this._add=t.add,this._remove=t.remove,this._redoPlacement=t.redoPlacement,this._tiles={},this._cache=new u(0,function(t){return this._unload(t)}.bind(this)),this._filterRendered=this._filterRendered.bind(this)}function i(t,e,n){var r=n.zoomTo(Math.min(t.z,e));return{x:(r.column-(t.x+t.w*Math.pow(2,t.z)))*h,y:(r.row-t.y)*h}}function a(t,e){return t%32-e%32}var o=t("./tile"),s=t("./tile_coord"),l=t("point-geometry"),u=t("../util/lru_cache"),c=t("../geo/coordinate"),f=t("../util/util"),h=t("../data/bucket").EXTENT;e.exports=r,r.maxOverzooming=10,r.maxUnderzooming=3,r.prototype={loaded:function(){for(var t in this._tiles)if(!this._tiles[t].loaded&&!this._tiles[t].errored)return!1;return!0},orderedIDs:function(){return Object.keys(this._tiles).map(Number).sort(a)},renderedIDs:function(){return this.orderedIDs().filter(this._filterRendered)},_filterRendered:function(t){return this._tiles[t].loaded&&!this._coveredTiles[t]},reload:function(){this._cache.reset();for(var t in this._tiles)this._load(this._tiles[t])},getTile:function(t){return this._tiles[t]},getZoom:function(t){return t.zoom+Math.log(t.tileSize/this.tileSize)/Math.LN2},coveringZoomLevel:function(t){return(this.roundZoom?Math.round:Math.floor)(this.getZoom(t))},coveringTiles:function(t){var e=this.coveringZoomLevel(t),n=e;if(e<this.minzoom)return[];e>this.maxzoom&&(e=this.maxzoom);var r=t,i=r.locationCoordinate(r.center)._zoomTo(e),a=new l(i.column-.5,i.row-.5);return s.cover(e,[r.pointCoordinate(new l(0,0))._zoomTo(e),r.pointCoordinate(new l(r.width,0))._zoomTo(e),r.pointCoordinate(new l(r.width,r.height))._zoomTo(e),r.pointCoordinate(new l(0,r.height))._zoomTo(e)],this.reparseOverscaled?n:e).sort(function(t,e){return a.dist(t)-a.dist(e)})},findLoadedChildren:function(t,e,n){var r=!1;for(var i in this._tiles){var a=this._tiles[i];if(!(n[i]||!a.loaded||a.coord.z<=t.z||a.coord.z>e)){var o=Math.pow(2,Math.min(a.coord.z,this.maxzoom)-Math.min(t.z,this.maxzoom));if(Math.floor(a.coord.x/o)===t.x&&Math.floor(a.coord.y/o)===t.y)for(n[i]=!0,r=!0;a&&a.coord.z-1>t.z;){var s=a.coord.parent(this.maxzoom).id;a=this._tiles[s],a&&a.loaded&&(delete n[i],n[s]=!0)}}}return r},findLoadedParent:function(t,e,n){for(var r=t.z-1;r>=e;r--){t=t.parent(this.maxzoom);var i=this._tiles[t.id];if(i&&i.loaded)return n[t.id]=!0,i;if(this._cache.has(t.id))return this.addTile(t),n[t.id]=!0,this._tiles[t.id]}},updateCacheSize:function(t){var e=Math.ceil(t.width/t.tileSize)+1,n=Math.ceil(t.height/t.tileSize)+1,r=e*n,i=5;this._cache.setMaxSize(Math.floor(r*i))},update:function(t,e,n){var i,a,o;this.updateCacheSize(e);var l=(this.roundZoom?Math.round:Math.floor)(this.getZoom(e)),u=Math.max(l-r.maxOverzooming,this.minzoom),c=Math.max(l+r.maxUnderzooming,this.minzoom),h={},d=(new Date).getTime();this._coveredTiles={};var p=t?this.coveringTiles(e):[];for(i=0;i<p.length;i++)a=p[i],o=this.addTile(a),h[a.id]=!0,o.loaded||this.findLoadedChildren(a,c,h)||this.findLoadedParent(a,u,h);for(var m={},g=Object.keys(h),v=0;v<g.length;v++){var y=g[v];a=s.fromID(y),o=this._tiles[y],o&&o.timeAdded>d-(n||0)&&(this.findLoadedChildren(a,c,h)&&(h[y]=!0),this.findLoadedParent(a,u,m))}var x;for(x in m)h[x]||(this._coveredTiles[x]=!0);for(x in m)h[x]=!0;var _=f.keysDifference(this._tiles,h);for(i=0;i<_.length;i++)this.removeTile(+_[i]);this.transform=e},addTile:function(t){var e=this._tiles[t.id];if(e)return e;var n=t.wrapped();if(e=this._tiles[n.id],e||(e=this._cache.get(n.id),e&&this._redoPlacement&&this._redoPlacement(e)),!e){var r=t.z,i=r>this.maxzoom?Math.pow(2,r-this.maxzoom):1;e=new o(n,this.tileSize*i,this.maxzoom),this._load(e)}return e.uses++,this._tiles[t.id]=e,this._add(e,t),e},removeTile:function(t){var e=this._tiles[t];e&&(e.uses--,delete this._tiles[t],this._remove(e),e.uses>0||(e.loaded?this._cache.add(e.coord.wrapped().id,e):(this._abort(e),this._unload(e))))},clearTiles:function(){for(var t in this._tiles)this.removeTile(t);this._cache.reset()},tilesIn:function(t){for(var e={},n=this.orderedIDs(),r=1/0,a=1/0,o=-(1/0),l=-(1/0),u=t[0].zoom,f=0;f<t.length;f++){var d=t[f];r=Math.min(r,d.column),a=Math.min(a,d.row),o=Math.max(o,d.column),l=Math.max(l,d.row)}for(var p=0;p<n.length;p++){var m=this._tiles[n[p]],g=s.fromID(n[p]),v=[i(g,m.sourceMaxZoom,new c(r,a,u)),i(g,m.sourceMaxZoom,new c(o,l,u))];if(v[0].x<h&&v[0].y<h&&v[1].x>=0&&v[1].y>=0){for(var y=[],x=0;x<t.length;x++)y.push(i(g,m.sourceMaxZoom,t[x]));var _=e[m.coord.id];void 0===_&&(_=e[m.coord.id]={tile:m,queryGeometry:[],scale:Math.pow(2,this.transform.zoom-m.coord.z)}),_.queryGeometry.push(y)}}var b=[];for(var w in e)b.push(e[w]);return b}}},{"../data/bucket":17,"../geo/coordinate":25,"../util/lru_cache":115,"../util/util":119,"./tile":50,"./tile_coord":51,"point-geometry":174}],53:[function(t,e,n){"use strict";function r(t){if(i.extend(this,i.pick(t,["url","tileSize"])),this._options=i.extend({type:"vector"},t),512!==this.tileSize)throw new Error("vector tile sources must have a tileSize of 512");o._loadTileJSON.call(this,t)}var i=t("../util/util"),a=t("../util/evented"),o=t("./source"),s=t("../util/mapbox").normalizeTileURL;e.exports=r,r.prototype=i.inherit(a,{minzoom:0,maxzoom:22,tileSize:512,reparseOverscaled:!0,_loaded:!1,isTileClipped:!0,onAdd:function(t){this.map=t},loaded:function(){return this._pyramid&&this._pyramid.loaded()},update:function(t){this._pyramid&&this._pyramid.update(this.used,t)},reload:function(){this._pyramid&&this._pyramid.reload()},serialize:function(){return i.extend({},this._options)},getVisibleCoordinates:o._getVisibleCoordinates,getTile:o._getTile,queryRenderedFeatures:o._queryRenderedVectorFeatures,querySourceFeatures:o._querySourceFeatures,_loadTile:function(t){var e=t.coord.z>this.maxzoom?Math.pow(2,t.coord.z-this.maxzoom):1,n={url:s(t.coord.url(this.tiles,this.maxzoom),this.url),uid:t.uid,coord:t.coord,zoom:t.coord.z,tileSize:this.tileSize*e,source:this.id,overscaling:e,angle:this.map.transform.angle,pitch:this.map.transform.pitch,showCollisionBoxes:this.map.showCollisionBoxes};t.workerID?(n.rawTileData=t.rawTileData,this.dispatcher.send("reload tile",n,this._tileLoaded.bind(this,t),t.workerID)):t.workerID=this.dispatcher.send("load tile",n,this._tileLoaded.bind(this,t))},_tileLoaded:function(t,e,n){if(!t.aborted){if(e)return t.errored=!0,void this.fire("tile.error",{tile:t,error:e});t.loadVectorData(n,this.map.style),t.redoWhenDone&&(t.redoWhenDone=!1,t.redoPlacement(this)),this.fire("tile.load",{tile:t}),this.fire("tile.stats",n.bucketStats)}},_abortTile:function(t){t.aborted=!0,this.dispatcher.send("abort tile",{uid:t.uid,source:this.id},null,t.workerID)},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.unloadVectorData(this.map.painter),this.dispatcher.send("remove tile",{uid:t.uid,source:this.id},null,t.workerID)},redoPlacement:o.redoPlacement,_redoTilePlacement:function(t){t.redoPlacement(this)}})},{"../util/evented":111,"../util/mapbox":116,"../util/util":119,"./source":49}],54:[function(t,e,n){"use strict";function r(t){this.urls=t.urls,this.coordinates=t.coordinates,c.getVideo(t.urls,function(e,n){if(!e){this.video=n,this.video.loop=!0;var r;this.video.addEventListener("playing",function(){r=this.map.style.animationLoop.set(1/0),this.map._rerender()}.bind(this)),this.video.addEventListener("pause",function(){this.map.style.animationLoop.cancel(r)}.bind(this)),this._loaded=!0,this.map&&(this.video.play(),this.setCoordinates(t.coordinates))}}.bind(this))}var i=t("../util/util"),a=t("./tile"),o=t("./tile_coord"),s=t("../geo/lng_lat"),l=t("point-geometry"),u=t("../util/evented"),c=t("../util/ajax"),f=t("../data/bucket").EXTENT,h=t("../render/draw_raster").RasterBoundsArray,d=t("../data/buffer"),p=t("../render/vertex_array_object");e.exports=r,r.prototype=i.inherit(u,{roundZoom:!0,getVideo:function(){return this.video},onAdd:function(t){this.map=t,this.video&&(this.video.play(),this.setCoordinates(this.coordinates))},setCoordinates:function(t){this.coordinates=t;var e=this.map,n=t.map(function(t){return e.transform.locationCoordinate(s.convert(t)).zoomTo(0)}),r=this.centerCoord=i.getCoordinatesCenter(n);r.column=Math.round(r.column),r.row=Math.round(r.row);var u=n.map(function(t){var e=t.zoomTo(r.zoom);return new l(Math.round((e.column-r.column)*f),Math.round((e.row-r.row)*f))}),c=32767,m=new h;return m.emplaceBack(u[0].x,u[0].y,0,0),m.emplaceBack(u[1].x,u[1].y,c,0),m.emplaceBack(u[3].x,u[3].y,0,c),m.emplaceBack(u[2].x,u[2].y,c,c),this.tile=new a(new o(r.zoom,r.column,r.row)),this.tile.buckets={},this.tile.boundsBuffer=new d(m.serialize(),h.serialize(),d.BufferType.VERTEX),this.tile.boundsVAO=new p,this.fire("change"),this},loaded:function(){return this.video&&this.video.readyState>=2},update:function(){},reload:function(){},prepare:function(){if(this._loaded&&!(this.video.readyState<2)){var t=this.map.painter.gl;this.tile.texture?(t.bindTexture(t.TEXTURE_2D,this.tile.texture),t.texSubImage2D(t.TEXTURE_2D,0,0,0,t.RGBA,t.UNSIGNED_BYTE,this.video)):(this.tile.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.tile.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texImage2D(t.TEXTURE_2D,0,t.RGBA,t.RGBA,t.UNSIGNED_BYTE,this.video)),this._currentTime=this.video.currentTime}},getVisibleCoordinates:function(){return this.tile?[this.tile.coord]:[]},getTile:function(){return this.tile},serialize:function(){return{type:"video",urls:this.urls,coordinates:this.coordinates}}})},{"../data/bucket":17,"../data/buffer":22,"../geo/lng_lat":26,"../render/draw_raster":37,"../render/vertex_array_object":43,"../util/ajax":104,"../util/evented":111,"../util/util":119,"./tile":50,"./tile_coord":51,"point-geometry":174}],55:[function(t,e,n){"use strict";function r(t){this.self=t,this.actor=new a(t,this),this.loading={},this.loaded={},this.geoJSONIndexes={}}function i(t){var e={};for(var n in t){var r=t[n],i=r.ref||r.id,a=t[i];a.layout&&"none"===a.layout.visibility||(e[i]=e[i]||[],n===i?e[i].unshift(r):e[i].push(r))}return e}var a=t("../util/actor"),o=t("./worker_tile"),s=t("../style/style_layer"),l=t("../util/util"),u=t("../util/ajax"),c=t("vector-tile"),f=t("pbf"),h=t("supercluster"),d=t("geojson-vt"),p=t("geojson-rewind"),m=t("./geojson_wrapper"),g=t("vt-pbf");e.exports=function(t){return new r(t)},l.extend(r.prototype,{"set layers":function(t){function e(t){var e=s.create(t,t.ref&&n.layers[t.ref]);e.updatePaintTransitions({},{transition:!1}),n.layers[e.id]=e}this.layers={};for(var n=this,r=[],a=0;a<t.length;a++){var o=t[a];"fill"!==o.type&&"line"!==o.type&&"circle"!==o.type&&"symbol"!==o.type||(o.ref?r.push(a):e(o))}for(var l=0;l<r.length;l++)e(t[r[l]]);this.layerFamilies=i(this.layers)},"update layers":function(t){function e(t){var e=a.layers[t.ref];a.layers[t.id]?a.layers[t.id].set(t,e):a.layers[t.id]=s.create(t,e),a.layers[t.id].updatePaintTransitions({},{transition:!1})}var n,r,a=this;for(n in t)r=t[n],r.ref&&e(r);for(n in t)r=t[n],r.ref||e(r);this.layerFamilies=i(this.layers)},"load tile":function(t,e){function n(t,n){return delete this.loading[r][i],t?e(t):(a.data=new c.VectorTile(new f(new Uint8Array(n))),a.parse(a.data,this.layerFamilies,this.actor,n,e),this.loaded[r]=this.loaded[r]||{},void(this.loaded[r][i]=a))}var r=t.source,i=t.uid;this.loading[r]||(this.loading[r]={});var a=this.loading[r][i]=new o(t);a.xhr=u.getArrayBuffer(t.url,n.bind(this))},"reload tile":function(t,e){var n=this.loaded[t.source],r=t.uid;if(n&&n[r]){var i=n[r];i.parse(i.data,this.layerFamilies,this.actor,t.rawTileData,e)}},"abort tile":function(t){var e=this.loading[t.source],n=t.uid;e&&e[n]&&(e[n].xhr.abort(),delete e[n])},"remove tile":function(t){var e=this.loaded[t.source],n=t.uid;e&&e[n]&&delete e[n]},"redo placement":function(t,e){var n=this.loaded[t.source],r=this.loading[t.source],i=t.uid;if(n&&n[i]){var a=n[i],o=a.redoPlacement(t.angle,t.pitch,t.showCollisionBoxes);o.result&&e(null,o.result,o.transferables)}else r&&r[i]&&(r[i].angle=t.angle)},"parse geojson":function(t,e){var n=function(n,r){if(p(r,!0),n)return e(n);if("object"!=typeof r)return e(new Error("Input data is not a valid GeoJSON object."));try{this.geoJSONIndexes[t.source]=t.cluster?h(t.superclusterOptions).load(r.features):d(r,t.geojsonVtOptions)}catch(n){return e(n)}e(null)}.bind(this);if(t.url)u.getJSON(t.url,n);else{if("string"!=typeof t.data)return e(new Error("Input data is not a valid GeoJSON object."));n(null,JSON.parse(t.data))}},"load geojson tile":function(t,e){var n=t.source,r=t.coord;if(!this.geoJSONIndexes[n])return e(null,null);var i=this.geoJSONIndexes[n].getTile(Math.min(r.z,t.maxZoom),r.x,r.y),a=i?new o(t):void 0;if(this.loaded[n]=this.loaded[n]||{},this.loaded[n][t.uid]=a,!i)return e(null,null);var s=new m(i.features);s.name="_geojsonTileLayer";var l=g({layers:{_geojsonTileLayer:s}}).buffer;a.parse(s,this.layerFamilies,this.actor,l,e)}})},{"../style/style_layer":63,"../util/actor":103,"../util/ajax":104,"../util/util":119,"./geojson_wrapper":45,"./worker_tile":56,"geojson-rewind":123,"geojson-vt":128,pbf:172,supercluster:177,"vector-tile":183,"vt-pbf":187}],56:[function(t,e,n){"use strict";function r(t){this.coord=t.coord,this.uid=t.uid,this.zoom=t.zoom,this.tileSize=t.tileSize,this.source=t.source,this.overscaling=t.overscaling,this.angle=t.angle,this.pitch=t.pitch,this.showCollisionBoxes=t.showCollisionBoxes}function i(t){for(var e in t.arrayGroups)for(var n=t.arrayGroups[e],r=0;r<n.length;r++){var i=n[r];for(var a in i){var o=i[a];for(var s in o)if(o[s].length>0)return!0}}return!1}function a(t){return t.serialize()}function o(t){var e=[];for(var n in t){var r=t[n];for(var i in r.arrayGroups)for(var a=r.arrayGroups[i],o=0;o<a.length;o++){var s=a[o];for(var l in s){var u=s[l];for(var c in u)e.push(u[c].arrayBuffer)}}}return e}function s(t){return t.id}var l=t("../data/feature_index"),u=t("../symbol/collision_tile"),c=t("../data/bucket"),f=t("../symbol/collision_box"),h=t("../util/dictionary_coder");e.exports=r,r.prototype.parse=function(t,e,n,r,d){function p(t,e){for(var n=0;n<t.length;n++){var r=t.feature(n);r.index=n;for(var i in e)e[i].filter(r)&&e[i].features.push(r)}}function m(t){if(t)return d(t);if(R++,2===R){for(var e=D.length-1;e>=0;e--)g(T,D[e]);v()}}function g(t,e){var n=Date.now();e.populateBuffers(w,F,O);var r=Date.now()-n;if("symbol"!==e.type)for(var i=0;i<e.features.length;i++){var a=e.features[i];M.insert(a,a.index,e.sourceLayerIndex,e.index)}e.features=null,S._total+=r,S[e.id]=(S[e.id]||0)+r}function v(){T.status="done",T.redoPlacementAfterDone&&(T.redoPlacement(T.angle,T.pitch,null),T.redoPlacementAfterDone=!1);var t=M.serialize(),e=w.serialize(),n=T.collisionBoxArray.serialize(),s=[r].concat(t.transferables).concat(e.transferables),l=I.filter(i);d(null,{buckets:l.map(a),bucketStats:S,featureIndex:t.data,collisionTile:e.data,collisionBoxArray:n,rawTileData:r},o(l).concat(s))}this.status="parsing",this.data=t,
+-this.collisionBoxArray=new f;var y,x,_,b,w=new u(this.angle,this.pitch,this.collisionBoxArray),M=new l(this.coord,this.overscaling,w,t.layers),k=new h(t.layers?Object.keys(t.layers).sort():["_geojsonTileLayer"]),S={_total:0},T=this,A={},E={},L=0;for(var z in e)x=e[z][0],x.source===this.source&&(x.ref||x.minzoom&&this.zoom<x.minzoom||x.maxzoom&&this.zoom>=x.maxzoom||x.layout&&"none"===x.layout.visibility||t.layers&&!t.layers[x.sourceLayer]||(b=c.create({layer:x,index:L++,childLayers:e[z],zoom:this.zoom,overscaling:this.overscaling,showCollisionBoxes:this.showCollisionBoxes,collisionBoxArray:this.collisionBoxArray,sourceLayerIndex:k.encode(x.sourceLayer||"_geojsonTileLayer")}),b.createFilter(),A[x.id]=b,t.layers&&(_=x.sourceLayer,E[_]=E[_]||{},E[_][x.id]=b)));if(t.layers)for(_ in E)x=t.layers[_],x&&p(x,E[_]);else p(t,A);var I=[],D=this.symbolBuckets=[],P=[];M.bucketLayerIDs={};for(var C in A)b=A[C],0!==b.features.length&&(M.bucketLayerIDs[b.index]=b.childLayers.map(s),I.push(b),"symbol"===b.type?D.push(b):P.push(b));var O={},F={},R=0;if(D.length>0){for(y=D.length-1;y>=0;y--)D[y].updateIcons(O),D[y].updateFont(F);for(var N in F)F[N]=Object.keys(F[N]).map(Number);O=Object.keys(O),n.send("get glyphs",{uid:this.uid,stacks:F},function(t,e){F=e,m(t)}),O.length?n.send("get icons",{icons:O},function(t,e){O=e,m(t)}):m()}for(y=P.length-1;y>=0;y--)g(this,P[y]);return 0===D.length?v():void 0},r.prototype.redoPlacement=function(t,e,n){if("done"!==this.status)return this.redoPlacementAfterDone=!0,this.angle=t,{};for(var r=new u(t,e,this.collisionBoxArray),s=this.symbolBuckets,l=s.length-1;l>=0;l--)s[l].placeFeatures(r,n);var c=r.serialize(),f=s.filter(i);return{result:{buckets:f.map(a),collisionTile:c.data},transferables:o(f).concat(c.transferables)}}},{"../data/bucket":17,"../data/feature_index":23,"../symbol/collision_box":76,"../symbol/collision_tile":78,"../util/dictionary_coder":110}],57:[function(t,e,n){"use strict";function r(){this.n=0,this.times=[]}e.exports=r,r.prototype.stopped=function(){return this.times=this.times.filter(function(t){return t.time>=(new Date).getTime()}),!this.times.length},r.prototype.set=function(t){return this.times.push({id:this.n,time:t+(new Date).getTime()}),this.n++},r.prototype.cancel=function(t){this.times=this.times.filter(function(e){return e.id!==t})}},{}],58:[function(t,e,n){"use strict";function r(t){this.base=t,this.retina=s.devicePixelRatio>1;var e=this.retina?"@2x":"";o.getJSON(l(t,e,".json"),function(t,e){return t?void this.fire("error",{error:t}):(this.data=e,void(this.img&&this.fire("load")))}.bind(this)),o.getImage(l(t,e,".png"),function(t,e){if(t)return void this.fire("error",{error:t});for(var n=e.getData(),r=e.data=new Uint8Array(n.length),i=0;i<n.length;i+=4){var a=n[i+3]/255;r[i+0]=n[i+0]*a,r[i+1]=n[i+1]*a,r[i+2]=n[i+2]*a,r[i+3]=n[i+3]}this.img=e,this.data&&this.fire("load")}.bind(this))}function i(){}var a=t("../util/evented"),o=t("../util/ajax"),s=t("../util/browser"),l=t("../util/mapbox").normalizeSpriteURL;e.exports=r,r.prototype=Object.create(a),r.prototype.toJSON=function(){return this.base},r.prototype.loaded=function(){return!(!this.data||!this.img)},r.prototype.resize=function(){if(s.devicePixelRatio>1!==this.retina){var t=new r(this.base);t.on("load",function(){this.img=t.img,this.data=t.data,this.retina=t.retina}.bind(this))}},i.prototype={x:0,y:0,width:0,height:0,pixelRatio:1,sdf:!1},r.prototype.getSpritePosition=function(t){if(!this.loaded())return new i;var e=this.data&&this.data[t];return e&&this.img?e:new i}},{"../util/ajax":104,"../util/browser":105,"../util/evented":111,"../util/mapbox":116}],59:[function(t,e,n){"use strict";function r(t){if(l[t])return l[t];if(Array.isArray(t))return t;if(t&&t.stops)return s.extend({},t,{stops:t.stops.map(i)});if("string"==typeof t){var e=o(t);if(!e)throw new Error("Invalid color "+t);var n=a(e);return l[t]=n,n}throw new Error("Invalid color "+t)}function i(t){return[t[0],r(t[1])]}function a(t){return[t[0]/255,t[1]/255,t[2]/255,t[3]/1]}var o=t("csscolorparser").parseCSSColor,s=t("../util/util"),l={};e.exports=r},{"../util/util":119,csscolorparser:121}],60:[function(t,e,n){"use strict";function r(t,e){this.animationLoop=e||new m,this.dispatcher=new p(Math.max(d.hardwareConcurrency-1,1),this),this.spriteAtlas=new l(512,512),this.lineAtlas=new u(256,512),this._layers={},this._order=[],this._groups=[],this.sources={},this.zoomHistory={},c.bindAll(["_forwardSourceEvent","_forwardTileEvent","_forwardLayerEvent","_redoPlacement"],this),this._resetUpdates();var n=function(t,e){if(t)return void this.fire("error",{error:t});if(!g.emitErrors(this,g(e))){this._loaded=!0,this.stylesheet=e,this.updateClasses();var n=e.sources;for(var r in n)this.addSource(r,n[r]);e.sprite&&(this.sprite=new o(e.sprite),this.sprite.on("load",this.fire.bind(this,"change"))),this.glyphSource=new s(e.glyphs),this._resolve(),this.fire("load")}}.bind(this);"string"==typeof t?f.getJSON(h(t),n):d.frame(n.bind(this,null,t)),this.on("source.load",function(t){var e=t.source;if(e&&e.vectorLayerIds)for(var n in this._layers){var r=this._layers[n];r.source===e.id&&this._validateLayer(r)}})}var i=t("../util/evented"),a=t("./style_layer"),o=t("./image_sprite"),s=t("../symbol/glyph_source"),l=t("../symbol/sprite_atlas"),u=t("../render/line_atlas"),c=t("../util/util"),f=t("../util/ajax"),h=t("../util/mapbox").normalizeStyleURL,d=t("../util/browser"),p=t("../util/dispatcher"),m=t("./animation_loop"),g=t("./validate_style"),v=t("../source/source"),y=t("./style_spec"),x=t("./style_function");e.exports=r,r.prototype=c.inherit(i,{_loaded:!1,_validateLayer:function(t){var e=this.sources[t.source];t.sourceLayer&&e&&e.vectorLayerIds&&-1===e.vectorLayerIds.indexOf(t.sourceLayer)&&this.fire("error",{error:new Error('Source layer "'+t.sourceLayer+'" does not exist on source "'+e.id+'" as specified by style layer "'+t.id+'"')})},loaded:function(){if(!this._loaded)return!1;for(var t in this.sources)if(!this.sources[t].loaded())return!1;return!this.sprite||this.sprite.loaded()},_resolve:function(){var t,e;this._layers={},this._order=this.stylesheet.layers.map(function(t){return t.id});for(var n=0;n<this.stylesheet.layers.length;n++)e=this.stylesheet.layers[n],e.ref||(t=a.create(e),this._layers[t.id]=t,t.on("error",this._forwardLayerEvent));for(var r=0;r<this.stylesheet.layers.length;r++)if(e=this.stylesheet.layers[r],e.ref){var i=this.getLayer(e.ref);t=a.create(e,i),this._layers[t.id]=t,t.on("error",this._forwardLayerEvent)}this._groupLayers(),this._updateWorkerLayers()},_groupLayers:function(){var t;this._groups=[];for(var e=0;e<this._order.length;++e){var n=this._layers[this._order[e]];t&&n.source===t.source||(t=[],t.source=n.source,this._groups.push(t)),t.push(n)}},_updateWorkerLayers:function(t){this.dispatcher.broadcast(t?"update layers":"set layers",this._serializeLayers(t))},_serializeLayers:function(t){t=t||this._order;for(var e=[],n={includeRefProperties:!0},r=0;r<t.length;r++)e.push(this._layers[t[r]].serialize(n));return e},_applyClasses:function(t,e){if(this._loaded){t=t||[],e=e||{transition:!0};var n=this.stylesheet.transition||{},r=this._updates.allPaintProps?this._layers:this._updates.paintProps;for(var i in r){var a=this._layers[i],o=this._updates.paintProps[i];if(this._updates.allPaintProps||o.all)a.updatePaintTransitions(t,e,n,this.animationLoop);else for(var s in o)this._layers[i].updatePaintTransition(s,t,e,n,this.animationLoop)}}},_recalculate:function(t){for(var e in this.sources)this.sources[e].used=!1;this._updateZoomHistory(t),this.rasterFadeDuration=300;for(var n in this._layers){var r=this._layers[n];r.recalculate(t,this.zoomHistory),!r.isHidden(t)&&r.source&&(this.sources[r.source].used=!0)}var i=300;Math.floor(this.z)!==Math.floor(t)&&this.animationLoop.set(i),this.z=t,this.fire("zoom")},_updateZoomHistory:function(t){var e=this.zoomHistory;void 0===e.lastIntegerZoom&&(e.lastIntegerZoom=Math.floor(t),e.lastIntegerZoomTime=0,e.lastZoom=t),Math.floor(e.lastZoom)<Math.floor(t)?(e.lastIntegerZoom=Math.floor(t),e.lastIntegerZoomTime=Date.now()):Math.floor(e.lastZoom)>Math.floor(t)&&(e.lastIntegerZoom=Math.floor(t+1),e.lastIntegerZoomTime=Date.now()),e.lastZoom=t},_checkLoaded:function(){if(!this._loaded)throw new Error("Style is not done loading")},update:function(t,e){if(!this._updates.changed)return this;if(this._updates.allLayers)this._groupLayers(),this._updateWorkerLayers();else{var n=Object.keys(this._updates.layers);n.length&&this._updateWorkerLayers(n)}var r,i=Object.keys(this._updates.sources);for(r=0;r<i.length;r++)this._reloadSource(i[r]);for(r=0;r<this._updates.events.length;r++){var a=this._updates.events[r];this.fire(a[0],a[1])}return this._applyClasses(t,e),this._updates.changed&&this.fire("change"),this._resetUpdates(),this},_resetUpdates:function(){this._updates={events:[],layers:{},sources:{},paintProps:{}}},addSource:function(t,e){if(this._checkLoaded(),void 0!==this.sources[t])throw new Error("There is already a source with this ID");return!v.is(e)&&this._handleErrors(g.source,"sources."+t,e)?this:(e=v.create(e),this.sources[t]=e,e.id=t,e.style=this,e.dispatcher=this.dispatcher,e.on("load",this._forwardSourceEvent).on("error",this._forwardSourceEvent).on("change",this._forwardSourceEvent).on("tile.add",this._forwardTileEvent).on("tile.load",this._forwardTileEvent).on("tile.error",this._forwardTileEvent).on("tile.remove",this._forwardTileEvent).on("tile.stats",this._forwardTileEvent),this._updates.events.push(["source.add",{source:e}]),this._updates.changed=!0,this)},removeSource:function(t){if(this._checkLoaded(),void 0===this.sources[t])throw new Error("There is no source with this ID");var e=this.sources[t];return delete this.sources[t],e.off("load",this._forwardSourceEvent).off("error",this._forwardSourceEvent).off("change",this._forwardSourceEvent).off("tile.add",this._forwardTileEvent).off("tile.load",this._forwardTileEvent).off("tile.error",this._forwardTileEvent).off("tile.remove",this._forwardTileEvent).off("tile.stats",this._forwardTileEvent),this._updates.events.push(["source.remove",{source:e}]),this._updates.changed=!0,this},getSource:function(t){return this.sources[t]},addLayer:function(t,e){if(this._checkLoaded(),!(t instanceof a)){if(this._handleErrors(g.layer,"layers."+t.id,t,!1,{arrayIndex:-1}))return this;var n=t.ref&&this.getLayer(t.ref);t=a.create(t,n)}return this._validateLayer(t),t.on("error",this._forwardLayerEvent),this._layers[t.id]=t,this._order.splice(e?this._order.indexOf(e):1/0,0,t.id),this._updates.allLayers=!0,t.source&&(this._updates.sources[t.source]=!0),this._updates.events.push(["layer.add",{layer:t}]),this.updateClasses(t.id)},removeLayer:function(t){this._checkLoaded();var e=this._layers[t];if(void 0===e)throw new Error("There is no layer with this ID");for(var n in this._layers)this._layers[n].ref===t&&this.removeLayer(n);return e.off("error",this._forwardLayerEvent),delete this._layers[t],this._order.splice(this._order.indexOf(t),1),this._updates.allLayers=!0,this._updates.events.push(["layer.remove",{layer:e}]),this._updates.changed=!0,this},getLayer:function(t){return this._layers[t]},getReferentLayer:function(t){var e=this.getLayer(t);return e.ref&&(e=this.getLayer(e.ref)),e},setLayerZoomRange:function(t,e,n){this._checkLoaded();var r=this.getReferentLayer(t);return r.minzoom===e&&r.maxzoom===n?this:(null!=e&&(r.minzoom=e),null!=n&&(r.maxzoom=n),this._updateLayer(r))},setFilter:function(t,e){this._checkLoaded();var n=this.getReferentLayer(t);return this._handleErrors(g.filter,"layers."+n.id+".filter",e)?this:c.deepEqual(n.filter,e)?this:(n.filter=c.clone(e),this._updateLayer(n))},getFilter:function(t){return this.getReferentLayer(t).filter},setLayoutProperty:function(t,e,n){this._checkLoaded();var r=this.getReferentLayer(t);return c.deepEqual(r.getLayoutProperty(e),n)?this:(r.setLayoutProperty(e,n),this._updateLayer(r))},getLayoutProperty:function(t,e){return this.getReferentLayer(t).getLayoutProperty(e)},setPaintProperty:function(t,e,n,r){this._checkLoaded();var i=this.getLayer(t);if(c.deepEqual(i.getPaintProperty(e,r),n))return this;var a=i.isPaintValueFeatureConstant(e);i.setPaintProperty(e,n,r);var o=!(x.isFunctionDefinition(n)&&"$zoom"!==n.property&&void 0!==n.property);return o&&a||(this._updates.layers[t]=!0,i.source&&(this._updates.sources[i.source]=!0)),this.updateClasses(t,e)},getPaintProperty:function(t,e,n){return this.getLayer(t).getPaintProperty(e,n)},updateClasses:function(t,e){if(this._updates.changed=!0,t){var n=this._updates.paintProps;n[t]||(n[t]={}),n[t][e||"all"]=!0}else this._updates.allPaintProps=!0;return this},serialize:function(){return c.filterObject({version:this.stylesheet.version,name:this.stylesheet.name,metadata:this.stylesheet.metadata,center:this.stylesheet.center,zoom:this.stylesheet.zoom,bearing:this.stylesheet.bearing,pitch:this.stylesheet.pitch,sprite:this.stylesheet.sprite,glyphs:this.stylesheet.glyphs,transition:this.stylesheet.transition,sources:c.mapObject(this.sources,function(t){return t.serialize()}),layers:this._order.map(function(t){return this._layers[t].serialize()},this)},function(t){return void 0!==t})},_updateLayer:function(t){return this._updates.layers[t.id]=!0,t.source&&(this._updates.sources[t.source]=!0),this._updates.changed=!0,this},_flattenRenderedFeatures:function(t){for(var e=[],n=this._order.length-1;n>=0;n--)for(var r=this._order[n],i=0;i<t.length;i++){var a=t[i][r];if(a)for(var o=0;o<a.length;o++)e.push(a[o])}return e},queryRenderedFeatures:function(t,e,n,r){e&&e.filter&&this._handleErrors(g.filter,"queryRenderedFeatures.filter",e.filter,!0);var i=[];for(var a in this.sources){var o=this.sources[a];o.queryRenderedFeatures&&i.push(o.queryRenderedFeatures(t,e,n,r))}return this._flattenRenderedFeatures(i)},querySourceFeatures:function(t,e){e&&e.filter&&this._handleErrors(g.filter,"querySourceFeatures.filter",e.filter,!0);var n=this.getSource(t);return n&&n.querySourceFeatures?n.querySourceFeatures(e):[]},_handleErrors:function(t,e,n,r,i){var a=r?g.throwErrors:g.emitErrors,o=t.call(g,c.extend({key:e,style:this.serialize(),value:n,styleSpec:y},i));return a.call(g,this,o)},_remove:function(){this.dispatcher.remove()},_reloadSource:function(t){this.sources[t].reload()},_updateSources:function(t){for(var e in this.sources)this.sources[e].update(t)},_redoPlacement:function(){for(var t in this.sources)this.sources[t].redoPlacement&&this.sources[t].redoPlacement()},_forwardSourceEvent:function(t){this.fire("source."+t.type,c.extend({source:t.target},t))},_forwardTileEvent:function(t){this.fire(t.type,c.extend({source:t.target},t))},_forwardLayerEvent:function(t){this.fire("layer."+t.type,c.extend({layer:{id:t.target.id}},t))},"get sprite json":function(t,e){var n=this.sprite;n.loaded()?e(null,{sprite:n.data,retina:n.retina}):n.on("load",function(){e(null,{sprite:n.data,retina:n.retina})})},"get icons":function(t,e){var n=this.sprite,r=this.spriteAtlas;n.loaded()?(r.setSprite(n),r.addIcons(t.icons,e)):n.on("load",function(){r.setSprite(n),r.addIcons(t.icons,e)})},"get glyphs":function(t,e){function n(t,n,r){t&&console.error(t),a[r]=n,i--,0===i&&e(null,a)}var r=t.stacks,i=Object.keys(r).length,a={};for(var o in r)this.glyphSource.getSimpleGlyphs(o,r[o],t.uid,n)}})},{"../render/line_atlas":40,"../source/source":49,"../symbol/glyph_source":81,"../symbol/sprite_atlas":86,"../util/ajax":104,"../util/browser":105,"../util/dispatcher":107,"../util/evented":111,"../util/mapbox":116,"../util/util":119,"./animation_loop":57,"./image_sprite":58,"./style_function":62,"./style_layer":63,"./style_spec":70,"./validate_style":72}],61:[function(t,e,n){"use strict";function r(t,e){this.type=t.type,this.transitionable=t.transition,this.value=s.clone(e),this.isFunction=!!e.stops,this.json=JSON.stringify(this.value);var n="color"===this.type?o(this.value):e;if(this.calculate=a[t.function||"piecewise-constant"](n),this.isFeatureConstant=this.calculate.isFeatureConstant,this.isZoomConstant=this.calculate.isZoomConstant,"piecewise-constant"===t.function&&t.transition&&(this.calculate=i(this.calculate)),!this.isFeatureConstant&&!this.isZoomConstant){this.stopZoomLevels=[];for(var r=[],l=this.value.stops,u=0;u<this.value.stops.length;u++){var c=l[u][0].zoom;this.stopZoomLevels.indexOf(c)<0&&(this.stopZoomLevels.push(c),r.push([c,r.length]))}this.calculateInterpolationT=a.interpolated({stops:r,base:e.base})}}function i(t){return function(e,n){var r,i,a,o=e.zoom,s=e.zoomHistory,l=e.duration,u=o%1,c=Math.min((Date.now()-s.lastIntegerZoomTime)/l,1),f=1,h=1;return o>s.lastIntegerZoom?(r=u+(1-u)*c,f*=2,i=t({zoom:o-1},n),a=t({zoom:o},n)):(r=1-(1-c)*u,a=t({zoom:o},n),i=t({zoom:o+1},n),f/=2),{from:i,fromScale:f,to:a,toScale:h,t:r}}}var a=t("./style_function"),o=t("./parse_color"),s=t("../util/util");e.exports=r},{"../util/util":119,"./parse_color":59,"./style_function":62}],62:[function(t,e,n){"use strict";var r=t("mapbox-gl-function");n.interpolated=function(t){var e=r.interpolated(t),n=function(t,n){return e(t&&t.zoom,n||{})};return n.isFeatureConstant=e.isFeatureConstant,n.isZoomConstant=e.isZoomConstant,n},n["piecewise-constant"]=function(t){var e=r["piecewise-constant"](t),n=function(t,n){return e(t&&t.zoom,n||{})};return n.isFeatureConstant=e.isFeatureConstant,n.isZoomConstant=e.isZoomConstant,n},n.isFunctionDefinition=r.isFunctionDefinition},{"mapbox-gl-function":144}],63:[function(t,e,n){"use strict";function r(t,e){this.set(t,e)}function i(t){return t.value}var a=t("../util/util"),o=t("./style_transition"),s=t("./style_declaration"),l=t("./style_spec"),u=t("./validate_style"),c=t("./parse_color"),f=t("../util/evented");e.exports=r;var h="-transition";r.create=function(e,n){var r={background:t("./style_layer/background_style_layer"),circle:t("./style_layer/circle_style_layer"),fill:t("./style_layer/fill_style_layer"),line:t("./style_layer/line_style_layer"),raster:t("./style_layer/raster_style_layer"),symbol:t("./style_layer/symbol_style_layer")};return new r[(n||e).type](e,n)},r.prototype=a.inherit(f,{set:function(t,e){this.id=t.id,this.ref=t.ref,this.metadata=t.metadata,this.type=(e||t).type,this.source=(e||t).source,this.sourceLayer=(e||t)["source-layer"],this.minzoom=(e||t).minzoom,this.maxzoom=(e||t).maxzoom,this.filter=(e||t).filter,this.paint={},this.layout={},this._paintSpecifications=l["paint_"+this.type],this._layoutSpecifications=l["layout_"+this.type],this._paintTransitions={},this._paintTransitionOptions={},this._paintDeclarations={},this._layoutDeclarations={},this._layoutFunctions={};var n,r;for(var i in t){var a=i.match(/^paint(?:\.(.*))?$/);if(a){var o=a[1]||"";for(n in t[i])this.setPaintProperty(n,t[i][n],o)}}if(this.ref)this._layoutDeclarations=e._layoutDeclarations;else for(r in t.layout)this.setLayoutProperty(r,t.layout[r]);for(n in this._paintSpecifications)this.paint[n]=this.getPaintValue(n);for(r in this._layoutSpecifications)this._updateLayoutValue(r)},setLayoutProperty:function(t,e){if(null==e)delete this._layoutDeclarations[t];else{var n="layers."+this.id+".layout."+t;if(this._handleErrors(u.layoutProperty,n,t,e))return;this._layoutDeclarations[t]=new s(this._layoutSpecifications[t],e)}this._updateLayoutValue(t)},getLayoutProperty:function(t){return this._layoutDeclarations[t]&&this._layoutDeclarations[t].value},getLayoutValue:function(t,e,n){var r=this._layoutSpecifications[t],i=this._layoutDeclarations[t];return i?i.calculate(e,n):r.default},setPaintProperty:function(t,e,n){var r="layers."+this.id+(n?'["paint.'+n+'"].':".paint.")+t;if(a.endsWith(t,h))if(this._paintTransitionOptions[n||""]||(this._paintTransitionOptions[n||""]={}),null===e||void 0===e)delete this._paintTransitionOptions[n||""][t];else{if(this._handleErrors(u.paintProperty,r,t,e))return;this._paintTransitionOptions[n||""][t]=e}else if(this._paintDeclarations[n||""]||(this._paintDeclarations[n||""]={}),null===e||void 0===e)delete this._paintDeclarations[n||""][t];else{if(this._handleErrors(u.paintProperty,r,t,e))return;this._paintDeclarations[n||""][t]=new s(this._paintSpecifications[t],e)}},getPaintProperty:function(t,e){return e=e||"",a.endsWith(t,h)?this._paintTransitionOptions[e]&&this._paintTransitionOptions[e][t]:this._paintDeclarations[e]&&this._paintDeclarations[e][t]&&this._paintDeclarations[e][t].value},getPaintValue:function(t,e,n){var r=this._paintSpecifications[t],i=this._paintTransitions[t];return i?i.calculate(e,n):"color"===r.type&&r.default?c(r.default):r.default},getPaintValueStopZoomLevels:function(t){var e=this._paintTransitions[t];return e?e.declaration.stopZoomLevels:[]},getPaintInterpolationT:function(t,e){var n=this._paintTransitions[t];return n.declaration.calculateInterpolationT({zoom:e})},isPaintValueFeatureConstant:function(t){var e=this._paintTransitions[t];return e?e.declaration.isFeatureConstant:!0},isPaintValueZoomConstant:function(t){var e=this._paintTransitions[t];return e?e.declaration.isZoomConstant:!0},isHidden:function(t){return this.minzoom&&t<this.minzoom?!0:this.maxzoom&&t>=this.maxzoom?!0:"none"===this.layout.visibility?!0:0===this.paint[this.type+"-opacity"]},updatePaintTransitions:function(t,e,n,r){for(var i=a.extend({},this._paintDeclarations[""]),o=0;o<t.length;o++)a.extend(i,this._paintDeclarations[t[o]]);var s;for(s in i)this._applyPaintDeclaration(s,i[s],e,n,r);for(s in this._paintTransitions)s in i||this._applyPaintDeclaration(s,null,e,n,r)},updatePaintTransition:function(t,e,n,r,i){for(var a=this._paintDeclarations[""][t],o=0;o<e.length;o++){var s=this._paintDeclarations[e[o]];s&&s[t]&&(a=s[t])}this._applyPaintDeclaration(t,a,n,r,i)},recalculate:function(t,e){for(var n in this._paintTransitions)this.paint[n]=this.getPaintValue(n,{zoom:t,zoomHistory:e});for(var r in this._layoutFunctions)this.layout[r]=this.getLayoutValue(r,{zoom:t,zoomHistory:e})},serialize:function(t){var e={id:this.id,ref:this.ref,metadata:this.metadata,minzoom:this.minzoom,maxzoom:this.maxzoom};for(var n in this._paintDeclarations){var r=""===n?"paint":"paint."+n;e[r]=a.mapObject(this._paintDeclarations[n],i)}return(!this.ref||t&&t.includeRefProperties)&&a.extend(e,{type:this.type,source:this.source,"source-layer":this.sourceLayer,filter:this.filter,layout:a.mapObject(this._layoutDeclarations,i)}),a.filterObject(e,function(t,e){return void 0!==t&&!("layout"===e&&!Object.keys(t).length)})},_applyPaintDeclaration:function(t,e,n,r,i){var l=n.transition?this._paintTransitions[t]:void 0;if(null===e||void 0===e){var u=this._paintSpecifications[t];e=new s(u,u.default)}if(!l||l.declaration.json!==e.json){var c=a.extend({duration:300,delay:0},r,this.getPaintProperty(t+h)),f=this._paintTransitions[t]=new o(e,l,c);f.instant()||(f.loopID=i.set(f.endTime-Date.now())),l&&i.cancel(l.loopID)}},_updateLayoutValue:function(t){var e=this._layoutDeclarations[t];e&&e.isFunction?this._layoutFunctions[t]=!0:(delete this._layoutFunctions[t],this.layout[t]=this.getLayoutValue(t))},_handleErrors:function(t,e,n,r){return u.emitErrors(this,t.call(u,{key:e,layerType:this.type,objectKey:n,value:r,styleSpec:l,style:{glyphs:!0,sprite:!0}}))}})},{"../util/evented":111,"../util/util":119,"./parse_color":59,"./style_declaration":61,"./style_layer/background_style_layer":64,"./style_layer/circle_style_layer":65,"./style_layer/fill_style_layer":66,"./style_layer/line_style_layer":67,"./style_layer/raster_style_layer":68,"./style_layer/symbol_style_layer":69,"./style_spec":70,"./style_transition":71,"./validate_style":72}],64:[function(t,e,n){"use strict";function r(){a.apply(this,arguments)}var i=t("../../util/util"),a=t("../style_layer");e.exports=r,r.prototype=i.inherit(a,{})},{"../../util/util":119,"../style_layer":63}],65:[function(t,e,n){"use strict";function r(){a.apply(this,arguments)}var i=t("../../util/util"),a=t("../style_layer");e.exports=r,r.prototype=i.inherit(a,{})},{"../../util/util":119,"../style_layer":63}],66:[function(t,e,n){"use strict";function r(){a.apply(this,arguments)}var i=t("../../util/util"),a=t("../style_layer");e.exports=r,r.prototype=i.inherit(a,{})},{"../../util/util":119,"../style_layer":63}],67:[function(t,e,n){"use strict";function r(){a.apply(this,arguments)}var i=t("../../util/util"),a=t("../style_layer");e.exports=r,r.prototype=i.inherit(a,{getPaintValue:function(t,e,n){var r=a.prototype.getPaintValue.apply(this,arguments);if(r&&"line-dasharray"===t){var i=Math.floor(e.zoom);this._flooredZoom!==i&&(this._flooredZoom=i,this._flooredLineWidth=this.getPaintValue("line-width",e,n)),r.fromScale*=this._flooredLineWidth,r.toScale*=this._flooredLineWidth}return r}})},{"../../util/util":119,"../style_layer":63}],68:[function(t,e,n){"use strict";function r(){a.apply(this,arguments)}var i=t("../../util/util"),a=t("../style_layer");e.exports=r,r.prototype=i.inherit(a,{})},{"../../util/util":119,"../style_layer":63}],69:[function(t,e,n){"use strict";function r(){a.apply(this,arguments)}var i=t("../../util/util"),a=t("../style_layer");e.exports=r,r.prototype=i.inherit(a,{isHidden:function(){if(a.prototype.isHidden.apply(this,arguments))return!0;var t=0===this.paint["text-opacity"]||!this.layout["text-field"],e=0===this.paint["icon-opacity"]||!this.layout["icon-image"];return!(!t||!e)},getLayoutValue:function(t,e,n){return("text-rotation-alignment"!==t||"line"!==this.getLayoutValue("symbol-placement",e,n)||this.getLayoutProperty("text-rotation-alignment"))&&("icon-rotation-alignment"!==t||"line"!==this.getLayoutValue("symbol-placement",e,n)||this.getLayoutProperty("icon-rotation-alignment"))?a.prototype.getLayoutValue.apply(this,arguments):"map"}})},{"../../util/util":119,"../style_layer":63}],70:[function(t,e,n){"use strict";e.exports=t("mapbox-gl-style-spec/reference/latest")},{"mapbox-gl-style-spec/reference/latest":167}],71:[function(t,e,n){"use strict";function r(t,e,n){this.declaration=t,this.startTime=this.endTime=(new Date).getTime();var r=t.type;"string"!==r&&"array"!==r||!t.transitionable?this.interp=o[r]:this.interp=i,this.oldTransition=e,this.duration=n.duration||0,this.delay=n.delay||0,this.instant()||(this.endTime=this.startTime+this.duration+this.delay,this.ease=a.easeCubicInOut),e&&e.endTime<=this.startTime&&delete e.oldTransition}function i(t,e,n){return{from:t.to,fromScale:t.toScale,to:e.to,toScale:e.toScale,t:n}}var a=t("../util/util"),o=t("../util/interpolate");e.exports=r,r.prototype.instant=function(){return!this.oldTransition||!this.interp||0===this.duration&&0===this.delay},r.prototype.calculate=function(t,e){var n=this.declaration.calculate(a.extend({},t,{duration:this.duration}),e);if(this.instant())return n;var r=t.time||Date.now();if(r<this.endTime){var i=this.oldTransition.calculate(a.extend({},t,{time:this.startTime}),e),o=this.ease((r-this.startTime-this.delay)/this.duration);n=this.interp(i,n,o)}return n}},{"../util/interpolate":113,"../util/util":119}],72:[function(t,e,n){"use 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d=c.angleTo(f)-f.angleTo(h);for(d=Math.abs((d+3*Math.PI)%(2*Math.PI)-Math.PI),l.push({distance:s,angleDelta:d}),u+=d;s-l[0].distance>r;)u-=l.shift().angleDelta;if(u>i)return!1;o++,s+=f.dist(h)}return!0}e.exports=r},{}],75:[function(t,e,n){"use strict";function r(t,e,n,r,a){for(var o=[],s=0;s<t.length;s++)for(var l,u=t[s],c=0;c<u.length-1;c++){var f=u[c],h=u[c+1];f.x<e&&h.x<e||(f.x<e?f=new i(e,f.y+(h.y-f.y)*((e-f.x)/(h.x-f.x)))._round():h.x<e&&(h=new i(e,f.y+(h.y-f.y)*((e-f.x)/(h.x-f.x)))._round()),f.y<n&&h.y<n||(f.y<n?f=new i(f.x+(h.x-f.x)*((n-f.y)/(h.y-f.y)),n)._round():h.y<n&&(h=new i(f.x+(h.x-f.x)*((n-f.y)/(h.y-f.y)),n)._round()),f.x>=r&&h.x>=r||(f.x>=r?f=new i(r,f.y+(h.y-f.y)*((r-f.x)/(h.x-f.x)))._round():h.x>=r&&(h=new i(r,f.y+(h.y-f.y)*((r-f.x)/(h.x-f.x)))._round()),f.y>=a&&h.y>=a||(f.y>=a?f=new i(f.x+(h.x-f.x)*((a-f.y)/(h.y-f.y)),a)._round():h.y>=a&&(h=new i(f.x+(h.x-f.x)*((a-f.y)/(h.y-f.y)),a)._round()),l&&f.equals(l[l.length-1])||(l=[f],o.push(l)),l.push(h)))))}return o}var i=t("point-geometry");e.exports=r},{"point-geometry":174}],76:[function(t,e,n){"use strict";var r=t("../util/struct_array"),i=t("../util/util"),a=t("point-geometry"),o=e.exports=new r({members:[{type:"Int16",name:"anchorPointX"},{type:"Int16",name:"anchorPointY"},{type:"Int16",name:"x1"},{type:"Int16",name:"y1"},{type:"Int16",name:"x2"},{type:"Int16",name:"y2"},{type:"Float32",name:"maxScale"},{type:"Uint32",name:"featureIndex"},{type:"Uint16",name:"sourceLayerIndex"},{type:"Uint16",name:"bucketIndex"},{type:"Int16",name:"bbox0"},{type:"Int16",name:"bbox1"},{type:"Int16",name:"bbox2"},{type:"Int16",name:"bbox3"},{type:"Float32",name:"placementScale"}]});i.extendAll(o.prototype.StructType.prototype,{get anchorPoint(){return new a(this.anchorPointX,this.anchorPointY)}})},{"../util/struct_array":117,"../util/util":119,"point-geometry":174}],77:[function(t,e,n){"use strict";function r(t,e,n,r,i,a,o,s,l,u,c){var f=o.top*s-l,h=o.bottom*s+l,d=o.left*s-l,p=o.right*s+l;if(this.boxStartIndex=t.length,u){var m=h-f,g=p-d;if(m>0)if(m=Math.max(10*s,m),c){var v=e[n.segment+1].sub(e[n.segment])._unit()._mult(g),y=[n.sub(v),n.add(v)];this._addLineCollisionBoxes(t,y,n,0,g,m,r,i,a)}else this._addLineCollisionBoxes(t,e,n,n.segment,g,m,r,i,a)}else t.emplaceBack(n.x,n.y,d,f,p,h,1/0,r,i,a,0,0,0,0,0);this.boxEndIndex=t.length}e.exports=r,r.prototype._addLineCollisionBoxes=function(t,e,n,r,i,a,o,s,l){var u=a/2,c=Math.floor(i/u),f=-a/2,h=this.boxes,d=n,p=r+1,m=f;do{if(p--,0>p)return h;m-=e[p].dist(d),d=e[p]}while(m>-i/2);for(var g=e[p].dist(e[p+1]),v=0;c>v;v++){for(var y=-i/2+v*u;y>m+g;){if(m+=g,p++,p+1>=e.length)return h;g=e[p].dist(e[p+1])}var x=y-m,_=e[p],b=e[p+1],w=b.sub(_)._unit()._mult(x)._add(_)._round(),M=Math.max(Math.abs(y-f)-u/2,0),k=i/2/M;t.emplaceBack(w.x,w.y,-a/2,-a/2,a/2,a/2,k,o,s,l,0,0,0,0,0)}return h}},{}],78:[function(t,e,n){"use strict";function r(t,e,n){if("object"==typeof t){var r=t;n=e,t=r.angle,e=r.pitch,this.grid=new o(r.grid),this.ignoredGrid=new o(r.ignoredGrid)}else this.grid=new o(a,12,6),this.ignoredGrid=new o(a,12,0);this.angle=t,this.pitch=e;var i=Math.sin(t),s=Math.cos(t);if(this.rotationMatrix=[s,-i,i,s],this.reverseRotationMatrix=[s,i,-i,s],this.yStretch=1/Math.cos(e/180*Math.PI),this.yStretch=Math.pow(this.yStretch,1.3),this.collisionBoxArray=n,0===n.length){n.emplaceBack();var l=32767;n.emplaceBack(0,0,0,-l,0,l,l,0,0,0,0,0,0,0,0,0),n.emplaceBack(a,0,0,-l,0,l,l,0,0,0,0,0,0,0,0,0),n.emplaceBack(0,0,-l,0,l,0,l,0,0,0,0,0,0,0,0,0),n.emplaceBack(0,a,-l,0,l,0,l,0,0,0,0,0,0,0,0,0)}this.tempCollisionBox=n.get(0),this.edges=[n.get(1),n.get(2),n.get(3),n.get(4)]}var i=t("point-geometry"),a=t("../data/bucket").EXTENT,o=t("grid-index");e.exports=r,r.prototype.serialize=function(){var t={angle:this.angle,pitch:this.pitch,grid:this.grid.toArrayBuffer(),ignoredGrid:this.ignoredGrid.toArrayBuffer()};return{data:t,transferables:[t.grid,t.ignoredGrid]}},r.prototype.minScale=.25,r.prototype.maxScale=2,r.prototype.placeCollisionFeature=function(t,e,n){for(var r=this.collisionBoxArray,a=this.minScale,o=this.rotationMatrix,s=this.yStretch,l=t.boxStartIndex;l<t.boxEndIndex;l++){var u=r.get(l),c=u.anchorPoint._matMult(o),f=c.x,h=c.y,d=f+u.x1,p=h+u.y1*s,m=f+u.x2,g=h+u.y2*s;if(u.bbox0=d,u.bbox1=p,u.bbox2=m,u.bbox3=g,!e)for(var v=this.grid.query(d,p,m,g),y=0;y<v.length;y++){
+-var x=r.get(v[y]),_=x.anchorPoint._matMult(o);if(a=this.getPlacementScale(a,c,u,_,x),a>=this.maxScale)return a}if(n){var b;if(this.angle){var w=this.reverseRotationMatrix,M=new i(u.x1,u.y1).matMult(w),k=new i(u.x2,u.y1).matMult(w),S=new i(u.x1,u.y2).matMult(w),T=new i(u.x2,u.y2).matMult(w);b=this.tempCollisionBox,b.anchorPointX=u.anchorPoint.x,b.anchorPointY=u.anchorPoint.y,b.x1=Math.min(M.x,k.x,S.x,T.x),b.y1=Math.min(M.y,k.x,S.x,T.x),b.x2=Math.max(M.x,k.x,S.x,T.x),b.y2=Math.max(M.y,k.x,S.x,T.x),b.maxScale=u.maxScale}else b=u;for(var A=0;A<this.edges.length;A++){var E=this.edges[A];if(a=this.getPlacementScale(a,u.anchorPoint,b,E.anchorPoint,E),a>=this.maxScale)return a}}}return a},r.prototype.queryRenderedSymbols=function(t,e,n,r,a){var o={},s=[],l=this.collisionBoxArray,u=this.rotationMatrix,c=new i(t,e)._matMult(u),f=this.tempCollisionBox;f.anchorX=c.x,f.anchorY=c.y,f.x1=0,f.y1=0,f.x2=n-t,f.y2=r-e,f.maxScale=a,a=f.maxScale;for(var h=[c.x+f.x1/a,c.y+f.y1/a*this.yStretch,c.x+f.x2/a,c.y+f.y2/a*this.yStretch],d=this.grid.query(h[0],h[1],h[2],h[3]),p=this.ignoredGrid.query(h[0],h[1],h[2],h[3]),m=0;m<p.length;m++)d.push(p[m]);for(var g=0;g<d.length;g++){var v=l.get(d[g]),y=v.sourceLayerIndex,x=v.featureIndex;if(void 0===o[y]&&(o[y]={}),!o[y][x]){var _=v.anchorPoint.matMult(u),b=this.getPlacementScale(this.minScale,c,f,_,v);b>=a&&(o[y][x]=!0,s.push(d[g]))}}return s},r.prototype.getPlacementScale=function(t,e,n,r,i){var a=e.x-r.x,o=e.y-r.y,s=(i.x1-n.x2)/a,l=(i.x2-n.x1)/a,u=(i.y1-n.y2)*this.yStretch/o,c=(i.y2-n.y1)*this.yStretch/o;(isNaN(s)||isNaN(l))&&(s=l=1),(isNaN(u)||isNaN(c))&&(u=c=1);var f=Math.min(Math.max(s,l),Math.max(u,c)),h=i.maxScale,d=n.maxScale;return f>h&&(f=h),f>d&&(f=d),f>t&&f>=i.placementScale&&(t=f),t},r.prototype.insertCollisionFeature=function(t,e,n){for(var r=n?this.ignoredGrid:this.grid,i=this.collisionBoxArray,a=t.boxStartIndex;a<t.boxEndIndex;a++){var o=i.get(a);o.placementScale=e,e<this.maxScale&&r.insert(a,o.bbox0,o.bbox1,o.bbox2,o.bbox3)}}},{"../data/bucket":17,"grid-index":143,"point-geometry":174}],79:[function(t,e,n){"use strict";function r(t,e,n,r,a,o,s,l,u){var c=r?.6*o*s:0,f=Math.max(r?r.right-r.left:0,a?a.right-a.left:0),h=0===t[0].x||t[0].x===u||0===t[0].y||t[0].y===u;e/4>e-f*s&&(e=f*s+e/4);var d=2*o,p=h?e/2*l%e:(f/2+d)*s*l%e;return i(t,p,e,c,n,f*s,h,!1,u)}function i(t,e,n,r,l,u,c,f,h){for(var d=u/2,p=0,m=0;m<t.length-1;m++)p+=t[m].dist(t[m+1]);for(var g=0,v=e-n,y=[],x=0;x<t.length-1;x++){for(var _=t[x],b=t[x+1],w=_.dist(b),M=b.angleTo(_);g+w>v+n;){v+=n;var k=(v-g)/w,S=a(_.x,b.x,k),T=a(_.y,b.y,k);if(S>=0&&h>S&&T>=0&&h>T&&v-d>=0&&p>=v+d){var A=new o(S,T,M,x)._round();r&&!s(t,A,u,r,l)||y.push(A)}}g+=w}return f||y.length||c||(y=i(t,g/2,n,r,l,u,c,!0,h)),y}var a=t("../util/interpolate"),o=t("../symbol/anchor"),s=t("./check_max_angle");e.exports=r},{"../symbol/anchor":73,"../util/interpolate":113,"./check_max_angle":74}],80:[function(t,e,n){"use strict";function r(t,e){this.width=t,this.height=e,this.bin=new i(t,e),this.index={},this.ids={},this.data=new Uint8Array(t*e)}var i=t("shelf-pack");e.exports=r,r.prototype.getGlyphs=function(){var t,e,n,r={};for(var i in this.ids)t=i.split("#"),e=t[0],n=t[1],r[e]||(r[e]=[]),r[e].push(n);return r},r.prototype.getRects=function(){var t,e,n,r={};for(var i in this.ids)t=i.split("#"),e=t[0],n=t[1],r[e]||(r[e]={}),r[e][n]=this.index[i];return r},r.prototype.addGlyph=function(t,e,n,r){if(!n)return null;var i=e+"#"+n.id;if(this.index[i])return this.ids[i].indexOf(t)<0&&this.ids[i].push(t),this.index[i];if(!n.bitmap)return null;var a=n.width+2*r,o=n.height+2*r,s=1,l=a+2*s,u=o+2*s;l+=4-l%4,u+=4-u%4;var c=this.bin.packOne(l,u);if(c||(this.resize(),c=this.bin.packOne(l,u)),!c)return console.warn("glyph bitmap overflow"),null;this.index[i]=c,this.ids[i]=[t];for(var f=this.data,h=n.bitmap,d=0;o>d;d++)for(var p=this.width*(c.y+d+s)+c.x+s,m=a*d,g=0;a>g;g++)f[p+g]=h[m+g];return this.dirty=!0,c},r.prototype.resize=function(){var t=this.width,e=this.height;if(!(t>512||e>512)){this.texture&&(this.gl&&this.gl.deleteTexture(this.texture),this.texture=null),this.width*=2,this.height*=2,this.bin.resize(this.width,this.height);for(var n,r,i=new ArrayBuffer(this.width*this.height),a=0;e>a;a++)n=new Uint8Array(this.data.buffer,e*a,t),r=new Uint8Array(i,e*a*2,t),r.set(n);this.data=new Uint8Array(i)}},r.prototype.bind=function(t){this.gl=t,this.texture?t.bindTexture(t.TEXTURE_2D,this.texture):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texImage2D(t.TEXTURE_2D,0,t.ALPHA,this.width,this.height,0,t.ALPHA,t.UNSIGNED_BYTE,null))},r.prototype.updateTexture=function(t){this.bind(t),this.dirty&&(t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width,this.height,t.ALPHA,t.UNSIGNED_BYTE,this.data),this.dirty=!1)}},{"shelf-pack":176}],81:[function(t,e,n){"use strict";function r(t){this.url=t&&o(t),this.atlases={},this.stacks={},this.loading={}}function i(t,e,n){var r=1;this.advance=t.advance,this.left=t.left-n-r,this.top=t.top+n+r,this.rect=e}function a(t,e,n,r){return r=r||"abc",n.replace("{s}",r[t.length%r.length]).replace("{fontstack}",t).replace("{range}",e)}var o=t("../util/mapbox").normalizeGlyphsURL,s=t("../util/ajax").getArrayBuffer,l=t("../util/glyphs"),u=t("../symbol/glyph_atlas"),c=t("pbf");e.exports=r,r.prototype.getSimpleGlyphs=function(t,e,n,r){void 0===this.stacks[t]&&(this.stacks[t]={}),void 0===this.atlases[t]&&(this.atlases[t]=new u(128,128));for(var a,o={},s=this.stacks[t],l=this.atlases[t],c=3,f={},h=0,d=0;d<e.length;d++){var p=e[d];if(a=Math.floor(p/256),s[a]){var m=s[a].glyphs[p],g=l.addGlyph(n,t,m,c);m&&(o[p]=new i(m,g,c))}else void 0===f[a]&&(f[a]=[],h++),f[a].push(p)}h||r(void 0,o,t);var v=function(e,a,s){if(!e)for(var u=this.stacks[t][a]=s.stacks[0],d=0;d<f[a].length;d++){var p=f[a][d],m=u.glyphs[p],g=l.addGlyph(n,t,m,c);m&&(o[p]=new i(m,g,c))}h--,h||r(void 0,o,t)}.bind(this);for(var y in f)this.loadRange(t,y,v)},r.prototype.loadRange=function(t,e,n){if(256*e>65535)return n("glyphs > 65535 not supported");void 0===this.loading[t]&&(this.loading[t]={});var r=this.loading[t];if(r[e])r[e].push(n);else{r[e]=[n];var i=256*e+"-"+(256*e+255),o=a(t,i,this.url);s(o,function(t,n){for(var i=!t&&new l(new c(new Uint8Array(n))),a=0;a<r[e].length;a++)r[e][a](t,e,i);delete r[e]})}},r.prototype.getGlyphAtlas=function(t){return this.atlases[t]}},{"../symbol/glyph_atlas":80,"../util/ajax":104,"../util/glyphs":112,"../util/mapbox":116,pbf:172}],82:[function(t,e,n){"use strict";e.exports=function(t,e,n){function r(r){c.push(t[r]),f.push(n[r]),h.push(e[r]),d++}function i(t,e,n){var r=u[t];return delete u[t],u[e]=r,f[r][0].pop(),f[r][0]=f[r][0].concat(n[0]),r}function a(t,e,n){var r=l[e];return delete l[e],l[t]=r,f[r][0].shift(),f[r][0]=n[0].concat(f[r][0]),r}function o(t,e,n){var r=n?e[0][e[0].length-1]:e[0][0];return t+":"+r.x+":"+r.y}var s,l={},u={},c=[],f=[],h=[],d=0;for(s=0;s<t.length;s++){var p=n[s],m=e[s];if(m){var g=o(m,p),v=o(m,p,!0);if(g in u&&v in l&&u[g]!==l[v]){var y=a(g,v,p),x=i(g,v,f[y]);delete l[g],delete u[v],u[o(m,f[x],!0)]=x,f[y]=null}else g in u?i(g,v,p):v in l?a(g,v,p):(r(s),l[g]=d-1,u[v]=d-1)}else r(s)}return{features:c,textFeatures:h,geometries:f}}},{}],83:[function(t,e,n){"use strict";function r(t,e,n,r,i,a,o,s,l){this.anchorPoint=t,this.tl=e,this.tr=n,this.bl=r,this.br=i,this.tex=a,this.angle=o,this.minScale=s,this.maxScale=l}function i(t,e,n,i,a,o){var u=e.image.rect,c=1,f=e.left-c,h=f+u.w/e.image.pixelRatio,d=e.top-c,p=d+u.h/e.image.pixelRatio,m=new s(f,d),g=new s(h,d),v=new s(h,p),y=new s(f,p),x=a["icon-rotate"]*Math.PI/180;if(o){var _=i[t.segment];if(t.y===_.y&&t.x===_.x&&t.segment+1<i.length){var b=i[t.segment+1];x+=Math.atan2(t.y-b.y,t.x-b.x)+Math.PI}else x+=Math.atan2(t.y-_.y,t.x-_.x)}if(x){var w=Math.sin(x),M=Math.cos(x),k=[M,-w,w,M];m=m.matMult(k),g=g.matMult(k),y=y.matMult(k),v=v.matMult(k)}return[new r(new s(t.x,t.y),m,g,y,v,e.image.rect,0,l,1/0)]}function a(t,e,n,i,a,u){for(var c=a["text-rotate"]*Math.PI/180,f=a["text-keep-upright"],h=e.positionedGlyphs,d=[],p=0;p<h.length;p++){var m=h[p],g=m.glyph,v=g.rect;if(v){var y,x=(m.x+g.advance/2)*n,_=l;u?(y=[],_=o(y,t,x,i,t.segment,!0),f&&(_=Math.min(_,o(y,t,x,i,t.segment,!1)))):y=[{anchorPoint:new s(t.x,t.y),offset:0,angle:0,maxScale:1/0,minScale:l}];for(var b=m.x+g.left,w=m.y-g.top,M=b+v.w,k=w+v.h,S=new s(b,w),T=new s(M,w),A=new s(b,k),E=new s(M,k),L=0;L<y.length;L++){var z=y[L],I=S,D=T,P=A,C=E,O=z.angle+c;if(O){var F=Math.sin(O),R=Math.cos(O),N=[R,-F,F,R];I=I.matMult(N),D=D.matMult(N),P=P.matMult(N),C=C.matMult(N)}var j=Math.max(z.minScale,_),B=(t.angle+c+z.offset+2*Math.PI)%(2*Math.PI);d.push(new r(z.anchorPoint,I,D,P,C,v,B,j,z.maxScale))}}}return d}function o(t,e,n,r,i,a){var o=!a;0>n&&(a=!a),a&&i++;var u=new s(e.x,e.y),c=r[i],f=1/0;n=Math.abs(n);for(var h=l;;){var d=u.dist(c),p=n/d,m=Math.atan2(c.y-u.y,c.x-u.x);if(a||(m+=Math.PI),o&&(m+=Math.PI),t.push({anchorPoint:u,offset:o?Math.PI:0,minScale:p,maxScale:f,angle:(m+2*Math.PI)%(2*Math.PI)}),h>=p)break;for(u=c;u.equals(c);)if(i+=a?1:-1,c=r[i],!c)return p;var g=c.sub(u)._unit();u=u.sub(g._mult(d)),f=p}return h}var s=t("point-geometry");e.exports={getIconQuads:i,getGlyphQuads:a};var l=.5},{"point-geometry":174}],84:[function(t,e,n){"use strict";function r(t,e,n){for(var r=[],a=0,o=t.length;o>a;a++){var s=i(t[a].properties,e["text-field"]);if(s){s=s.toString();var l=e["text-transform"];"uppercase"===l?s=s.toLocaleUpperCase():"lowercase"===l&&(s=s.toLocaleLowerCase());for(var u=0;u<s.length;u++)n[s.charCodeAt(u)]=!0;r[a]=s}else r[a]=null}return r}var i=t("../util/token");e.exports=r},{"../util/token":118}],85:[function(t,e,n){"use strict";function r(t,e,n,r){this.codePoint=t,this.x=e,this.y=n,this.glyph=r}function i(t,e,n,r,i,a){this.positionedGlyphs=t,this.text=e,this.top=n,this.bottom=r,this.left=i,this.right=a}function a(t,e,n,a,s,l,u,c,f){for(var h=[],d=new i(h,t,f[1],f[1],f[0],f[0]),p=-17,m=0,g=p,v=0;v<t.length;v++){var y=t.charCodeAt(v),x=e[y];x&&(h.push(new r(y,m,g,x)),m+=x.advance+c)}return h.length?(o(d,e,a,n,s,l,u,f),d):!1}function o(t,e,n,r,i,a,o,u){var c=null,d=0,p=0,m=0,g=0,v=t.positionedGlyphs;if(r)for(var y=0;y<v.length;y++){var x=v[y];if(x.x-=d,x.y+=n*m,x.x>r&&null!==c){var _=v[c+1].x;g=Math.max(_,g);for(var b=c+1;y>=b;b++)v[b].y+=n,v[b].x-=_;if(o){var w=c;f[v[c].codePoint]&&w--,s(v,e,p,w,o)}p=c+1,c=null,d+=_,m++}h[x.codePoint]&&(c=y)}var M=v[v.length-1],k=M.x+e[M.codePoint].advance;g=Math.max(g,k);var S=(m+1)*n;s(v,e,p,v.length-1,o),l(v,o,i,a,g,n,m,u),t.top+=-a*S,t.bottom=t.top+S,t.left+=-i*g,t.right=t.left+g}function s(t,e,n,r,i){for(var a=e[t[r].codePoint].advance,o=(t[r].x+a)*i,s=n;r>=s;s++)t[s].x-=o}function l(t,e,n,r,i,a,o,s){for(var l=(e-n)*i+s[0],u=(-r*(o+1)+.5)*a+s[1],c=0;c<t.length;c++)t[c].x+=l,t[c].y+=u}function u(t,e){if(!t||!t.rect)return null;var n=e["icon-offset"][0],r=e["icon-offset"][1],i=n-t.width/2,a=i+t.width,o=r-t.height/2,s=o+t.height;return new c(t,o,s,i,a)}function c(t,e,n,r,i){this.image=t,this.top=e,this.bottom=n,this.left=r,this.right=i}e.exports={shapeText:a,shapeIcon:u};var f={32:!0,8203:!0},h={32:!0,38:!0,43:!0,45:!0,47:!0,173:!0,183:!0,8203:!0,8208:!0,8211:!0}},{}],86:[function(t,e,n){"use strict";function r(t,e){this.width=t,this.height=e,this.bin=new o(t,e),this.images={},this.data=!1,this.texture=0,this.filter=0,this.pixelRatio=1,this.dirty=!0}function i(t,e,n,r,i,a,o,s,l,u,c){var f,h,d=r*e+n,p=s*a+o;if(c)for(p-=a,h=-1;u>=h;h++,d=((h+u)%u+r)*e+n,p+=a)for(f=-1;l>=f;f++)i[p+f]=t[d+(f+l)%l];else for(h=0;u>h;h++,d+=e,p+=a)for(f=0;l>f;f++)i[p+f]=t[d+f]}function a(t,e,n,r,i){this.rect=t,this.width=e,this.height=n,this.sdf=r,this.pixelRatio=i}var o=t("shelf-pack"),s=t("../util/browser");e.exports=r,r.prototype.allocateImage=function(t,e){t/=this.pixelRatio,e/=this.pixelRatio;var n=2,r=t+n+(4-(t+n)%4),i=e+n+(4-(e+n)%4),a=this.bin.packOne(r,i);return a?a:(console.warn("SpriteAtlas out of space."),null)},r.prototype.getImage=function(t,e){if(this.images[t])return this.images[t];if(!this.sprite)return null;var n=this.sprite.getSpritePosition(t);if(!n.width||!n.height)return null;var r=this.allocateImage(n.width,n.height);if(!r)return null;var i=new a(r,n.width/n.pixelRatio,n.height/n.pixelRatio,n.sdf,n.pixelRatio/this.pixelRatio);return this.images[t]=i,this.copy(r,n,e),i},r.prototype.getPosition=function(t,e){var n=this.getImage(t,e),r=n&&n.rect;if(!r)return null;var i=n.width*n.pixelRatio,a=n.height*n.pixelRatio,o=1;return{size:[n.width,n.height],tl:[(r.x+o)/this.width,(r.y+o)/this.height],br:[(r.x+o+i)/this.width,(r.y+o+a)/this.height]}},r.prototype.allocate=function(){if(!this.data){var t=Math.floor(this.width*this.pixelRatio),e=Math.floor(this.height*this.pixelRatio);this.data=new Uint32Array(t*e);for(var n=0;n<this.data.length;n++)this.data[n]=0}},r.prototype.copy=function(t,e,n){if(this.sprite.img.data){var r=new Uint32Array(this.sprite.img.data.buffer);this.allocate();var a=this.data,o=1;i(r,this.sprite.img.width,e.x,e.y,a,this.width*this.pixelRatio,(t.x+o)*this.pixelRatio,(t.y+o)*this.pixelRatio,e.width,e.height,n),this.dirty=!0}},r.prototype.setSprite=function(t){t&&(this.pixelRatio=s.devicePixelRatio>1?2:1,this.canvas&&(this.canvas.width=this.width*this.pixelRatio,this.canvas.height=this.height*this.pixelRatio)),this.sprite=t},r.prototype.addIcons=function(t,e){for(var n=0;n<t.length;n++)this.getImage(t[n]);e(null,this.images)},r.prototype.bind=function(t,e){var n=!1;this.texture?t.bindTexture(t.TEXTURE_2D,this.texture):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),n=!0);var r=e?t.LINEAR:t.NEAREST;r!==this.filter&&(t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,r),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,r),this.filter=r),this.dirty&&(this.allocate(),n?t.texImage2D(t.TEXTURE_2D,0,t.RGBA,this.width*this.pixelRatio,this.height*this.pixelRatio,0,t.RGBA,t.UNSIGNED_BYTE,new Uint8Array(this.data.buffer)):t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width*this.pixelRatio,this.height*this.pixelRatio,t.RGBA,t.UNSIGNED_BYTE,new Uint8Array(this.data.buffer)),this.dirty=!1)}},{"../util/browser":105,"shelf-pack":176}],87:[function(t,e,n){"use strict";var r=t("../util/util"),i=t("../util/interpolate"),a=t("../util/browser"),o=t("../geo/lng_lat"),s=t("../geo/lng_lat_bounds"),l=t("point-geometry"),u=e.exports=function(){};r.extend(u.prototype,{getCenter:function(){return this.transform.center},setCenter:function(t,e){return this.jumpTo({center:t},e),this},panBy:function(t,e,n){return this.panTo(this.transform.center,r.extend({offset:l.convert(t).mult(-1)},e),n),this},panTo:function(t,e,n){return this.easeTo(r.extend({center:t},e),n)},getZoom:function(){return this.transform.zoom},setZoom:function(t,e){return this.jumpTo({zoom:t},e),this},zoomTo:function(t,e,n){return this.easeTo(r.extend({zoom:t},e),n)},zoomIn:function(t,e){return this.zoomTo(this.getZoom()+1,t,e),this},zoomOut:function(t,e){return this.zoomTo(this.getZoom()-1,t,e),this},getBearing:function(){return this.transform.bearing},setBearing:function(t,e){return this.jumpTo({bearing:t},e),this},rotateTo:function(t,e,n){return this.easeTo(r.extend({bearing:t},e),n)},resetNorth:function(t,e){return this.rotateTo(0,r.extend({duration:1e3},t),e),this},snapToNorth:function(t,e){return Math.abs(this.getBearing())<this.options.bearingSnap?this.resetNorth(t,e):this},getPitch:function(){return this.transform.pitch},setPitch:function(t,e){return this.jumpTo({pitch:t},e),this},fitBounds:function(t,e,n){e=r.extend({padding:0,offset:[0,0],maxZoom:1/0},e),t=s.convert(t);var i=l.convert(e.offset),a=this.transform,o=a.project(t.getNorthWest()),u=a.project(t.getSouthEast()),c=u.sub(o),f=(a.width-2*e.padding-2*Math.abs(i.x))/c.x,h=(a.height-2*e.padding-2*Math.abs(i.y))/c.y;return e.center=a.unproject(o.add(u).div(2)),e.zoom=Math.min(a.scaleZoom(a.scale*Math.min(f,h)),e.maxZoom),e.bearing=0,e.linear?this.easeTo(e,n):this.flyTo(e,n)},jumpTo:function(t,e){this.stop();var n=this.transform,r=!1,i=!1,a=!1;return"zoom"in t&&n.zoom!==+t.zoom&&(r=!0,n.zoom=+t.zoom),"center"in t&&(n.center=o.convert(t.center)),"bearing"in t&&n.bearing!==+t.bearing&&(i=!0,n.bearing=+t.bearing),"pitch"in t&&n.pitch!==+t.pitch&&(a=!0,n.pitch=+t.pitch),this.fire("movestart",e).fire("move",e),r&&this.fire("zoomstart",e).fire("zoom",e).fire("zoomend",e),i&&this.fire("rotate",e),a&&this.fire("pitch",e),this.fire("moveend",e)},easeTo:function(t,e){this.stop(),t=r.extend({offset:[0,0],duration:500,easing:r.ease},t);var n,a,s=this.transform,u=l.convert(t.offset),c=this.getZoom(),f=this.getBearing(),h=this.getPitch(),d="zoom"in t?+t.zoom:c,p="bearing"in t?this._normalizeBearing(t.bearing,f):f,m="pitch"in t?+t.pitch:h;"center"in t?(n=o.convert(t.center),a=s.centerPoint.add(u)):"around"in t?(n=o.convert(t.around),a=s.locationPoint(n)):(a=s.centerPoint.add(u),n=s.pointLocation(a));var g=s.locationPoint(n);return t.animate===!1&&(t.duration=0),this.zooming=d!==c,this.rotating=f!==p,this.pitching=m!==h,t.noMoveStart||this.fire("movestart",e),this.zooming&&this.fire("zoomstart",e),clearTimeout(this._onEaseEnd),this._ease(function(t){this.zooming&&(s.zoom=i(c,d,t)),this.rotating&&(s.bearing=i(f,p,t)),this.pitching&&(s.pitch=i(h,m,t)),s.setLocationAtPoint(n,g.add(a.sub(g)._mult(t))),this.fire("move",e),this.zooming&&this.fire("zoom",e),this.rotating&&this.fire("rotate",e),this.pitching&&this.fire("pitch",e)},function(){t.delayEndEvents?this._onEaseEnd=setTimeout(this._easeToEnd.bind(this,e),t.delayEndEvents):this._easeToEnd(e)}.bind(this),t),this},_easeToEnd:function(t){this.zooming&&this.fire("zoomend",t),this.fire("moveend",t),this.zooming=!1,this.rotating=!1,this.pitching=!1},flyTo:function(t,e){function n(t){var e=(S*S-k*k+(t?-1:1)*L*L*T*T)/(2*(t?S:k)*L*T);return Math.log(Math.sqrt(e*e+1)-e)}function a(t){return(Math.exp(t)-Math.exp(-t))/2}function s(t){return(Math.exp(t)+Math.exp(-t))/2}function u(t){return a(t)/s(t)}this.stop(),t=r.extend({offset:[0,0],speed:1.2,curve:1.42,easing:r.ease},t);var c=this.transform,f=l.convert(t.offset),h=this.getZoom(),d=this.getBearing(),p=this.getPitch(),m="center"in t?o.convert(t.center):this.getCenter(),g="zoom"in t?+t.zoom:h,v="bearing"in t?this._normalizeBearing(t.bearing,d):d,y="pitch"in t?+t.pitch:p;Math.abs(c.center.lng)+Math.abs(m.lng)>180&&(c.center.lng>0&&m.lng<0?m.lng+=360:c.center.lng<0&&m.lng>0&&(m.lng-=360));var x=c.zoomScale(g-h),_=c.point,b="center"in t?c.project(m).sub(f.div(x)):_,w=c.worldSize,M=t.curve,k=Math.max(c.width,c.height),S=k/x,T=b.sub(_).mag();if("minZoom"in t){var A=r.clamp(Math.min(t.minZoom,h,g),c.minZoom,c.maxZoom),E=k/c.zoomScale(A-h);M=Math.sqrt(E/T*2)}var L=M*M,z=n(0),I=function(t){return s(z)/s(z+M*t)},D=function(t){return k*((s(z)*u(z+M*t)-a(z))/L)/T},P=(n(1)-z)/M;if(Math.abs(T)<1e-6){if(Math.abs(k-S)<1e-6)return this.easeTo(t);var C=k>S?-1:1;P=Math.abs(Math.log(S/k))/M,D=function(){return 0},I=function(t){return Math.exp(C*M*t)}}if("duration"in t)t.duration=+t.duration;else{var O="screenSpeed"in t?+t.screenSpeed/M:+t.speed;t.duration=1e3*P/O}return this.zooming=!0,d!==v&&(this.rotating=!0),p!==y&&(this.pitching=!0),this.fire("movestart",e),this.fire("zoomstart",e),this._ease(function(t){var n=t*P,r=D(n);c.zoom=h+c.scaleZoom(1/I(n)),c.center=c.unproject(_.add(b.sub(_).mult(r)),w),this.rotating&&(c.bearing=i(d,v,t)),this.pitching&&(c.pitch=i(p,y,t)),this.fire("move",e),this.fire("zoom",e),this.rotating&&this.fire("rotate",e),this.pitching&&this.fire("pitch",e)},function(){this.fire("zoomend",e),this.fire("moveend",e),this.zooming=!1,this.rotating=!1,this.pitching=!1},t),this},isEasing:function(){return!!this._abortFn},stop:function(){return this._abortFn&&(this._abortFn(),this._finishEase()),this},_ease:function(t,e,n){this._finishFn=e,this._abortFn=a.timed(function(e){t.call(this,n.easing(e)),1===e&&this._finishEase()},n.animate===!1?0:n.duration,this)},_finishEase:function(){delete this._abortFn;var t=this._finishFn;delete this._finishFn,t.call(this)},_normalizeBearing:function(t,e){t=r.wrap(t,-180,180);var n=Math.abs(t-e);return Math.abs(t-360-e)<n&&(t-=360),Math.abs(t+360-e)<n&&(t+=360),t},_updateEasing:function(t,e,n){var i;if(this.ease){var a=this.ease,o=(Date.now()-a.start)/a.duration,s=a.easing(o+.01)-a.easing(o),l=.27/Math.sqrt(s*s+1e-4)*.01,u=Math.sqrt(.0729-l*l);i=r.bezier(l,u,.25,1)}else i=n?r.bezier.apply(r,n):r.ease;return this.ease={start:(new Date).getTime(),to:Math.pow(2,e),duration:t,easing:i},i}})},{"../geo/lng_lat":26,"../geo/lng_lat_bounds":27,"../util/browser":105,"../util/interpolate":113,"../util/util":119,"point-geometry":174}],88:[function(t,e,n){"use strict";function r(t){o.setOptions(this,t)}var i=t("./control"),a=t("../../util/dom"),o=t("../../util/util");e.exports=r,r.createAttributionString=function(t){var e=[];for(var n in t){var r=t[n];r.attribution&&e.indexOf(r.attribution)<0&&e.push(r.attribution)}return e.sort(function(t,e){return t.length-e.length}),e=e.filter(function(t,n){for(var r=n+1;r<e.length;r++)if(e[r].indexOf(t)>=0)return!1;return!0}),e.join(" | ")},r.prototype=o.inherit(i,{options:{position:"bottom-right"},onAdd:function(t){var e="mapboxgl-ctrl-attrib",n=this._container=a.create("div",e,t.getContainer());return this._update(),t.on("source.load",this._update.bind(this)),t.on("source.change",this._update.bind(this)),t.on("source.remove",this._update.bind(this)),t.on("moveend",this._updateEditLink.bind(this)),n},_update:function(){this._map.style&&(this._container.innerHTML=r.createAttributionString(this._map.style.sources)),this._editLink=this._container.getElementsByClassName("mapbox-improve-map")[0],this._updateEditLink()},_updateEditLink:function(){if(this._editLink){var t=this._map.getCenter();this._editLink.href="https://www.mapbox.com/map-feedback/#/"+t.lng+"/"+t.lat+"/"+Math.round(this._map.getZoom()+1)}}})},{"../../util/dom":108,"../../util/util":119,"./control":89}],89:[function(t,e,n){"use strict";function r(){}e.exports=r,r.prototype={addTo:function(t){this._map=t;var e=this._container=this.onAdd(t);if(this.options&&this.options.position){var n=this.options.position,r=t._controlCorners[n];e.className+=" mapboxgl-ctrl",-1!==n.indexOf("bottom")?r.insertBefore(e,r.firstChild):r.appendChild(e)}return this},remove:function(){return this._container.parentNode.removeChild(this._container),this.onRemove&&this.onRemove(this._map),this._map=null,this}}},{}],90:[function(t,e,n){"use strict";function r(t){s.setOptions(this,t)}var i=t("./control"),a=t("../../util/browser"),o=t("../../util/dom"),s=t("../../util/util");e.exports=r;var l={enableHighAccuracy:!1,timeout:6e3};r.prototype=s.inherit(i,{options:{position:"top-right"},onAdd:function(t){var e="mapboxgl-ctrl",n=this._container=o.create("div",e+"-group",t.getContainer());return a.supportsGeolocation?(this._container.addEventListener("contextmenu",this._onContextMenu.bind(this)),this._geolocateButton=o.create("button",e+"-icon "+e+"-geolocate",this._container),this._geolocateButton.addEventListener("click",this._onClickGeolocate.bind(this)),n):n},_onContextMenu:function(t){t.preventDefault()},_onClickGeolocate:function(){navigator.geolocation.getCurrentPosition(this._success.bind(this),this._error.bind(this),l),this._timeoutId=setTimeout(this._finish.bind(this),1e4)},_success:function(t){this._map.jumpTo({center:[t.coords.longitude,t.coords.latitude],zoom:17,bearing:0,pitch:0}),this._finish()},_error:function(){this._finish()},_finish:function(){this._timeoutId&&clearTimeout(this._timeoutId),this._timeoutId=void 0}})},{"../../util/browser":105,"../../util/dom":108,"../../util/util":119,"./control":89}],91:[function(t,e,n){"use strict";function r(t){s.setOptions(this,t)}function i(t){return new MouseEvent(t.type,{button:2,buttons:2,bubbles:!0,cancelable:!0,detail:t.detail,view:t.view,screenX:t.screenX,screenY:t.screenY,clientX:t.clientX,clientY:t.clientY,movementX:t.movementX,movementY:t.movementY,ctrlKey:t.ctrlKey,shiftKey:t.shiftKey,altKey:t.altKey,metaKey:t.metaKey})}var a=t("./control"),o=t("../../util/dom"),s=t("../../util/util");e.exports=r,r.prototype=s.inherit(a,{options:{position:"top-right"},onAdd:function(t){var e="mapboxgl-ctrl",n=this._container=o.create("div",e+"-group",t.getContainer());return this._container.addEventListener("contextmenu",this._onContextMenu.bind(this)),this._zoomInButton=this._createButton(e+"-icon "+e+"-zoom-in",t.zoomIn.bind(t)),this._zoomOutButton=this._createButton(e+"-icon "+e+"-zoom-out",t.zoomOut.bind(t)),this._compass=this._createButton(e+"-icon "+e+"-compass",t.resetNorth.bind(t)),this._compassArrow=o.create("div","arrow",this._compass),this._compass.addEventListener("mousedown",this._onCompassDown.bind(this)),this._onCompassMove=this._onCompassMove.bind(this),this._onCompassUp=this._onCompassUp.bind(this),t.on("rotate",this._rotateCompassArrow.bind(this)),this._rotateCompassArrow(),this._el=t.getCanvasContainer(),n},_onContextMenu:function(t){t.preventDefault()},_onCompassDown:function(t){0===t.button&&(o.disableDrag(),document.addEventListener("mousemove",this._onCompassMove),document.addEventListener("mouseup",this._onCompassUp),this._el.dispatchEvent(i(t)),t.stopPropagation())},_onCompassMove:function(t){0===t.button&&(this._el.dispatchEvent(i(t)),t.stopPropagation())},_onCompassUp:function(t){0===t.button&&(document.removeEventListener("mousemove",this._onCompassMove),document.removeEventListener("mouseup",this._onCompassUp),o.enableDrag(),this._el.dispatchEvent(i(t)),t.stopPropagation())},_createButton:function(t,e){var n=o.create("button",t,this._container);return n.addEventListener("click",function(){e()}),n},_rotateCompassArrow:function(){var t="rotate("+this._map.transform.angle*(180/Math.PI)+"deg)";this._compassArrow.style.transform=t}})},{"../../util/dom":108,"../../util/util":119,"./control":89}],92:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),this._container=t.getContainer(),o.bindHandlers(this)}var i=t("../../util/dom"),a=t("../../geo/lng_lat_bounds"),o=t("../../util/util");e.exports=r,r.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onMouseDown,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onMouseDown),this._enabled=!1)},_onMouseDown:function(t){t.shiftKey&&0===t.button&&(document.addEventListener("mousemove",this._onMouseMove,!1),document.addEventListener("keydown",this._onKeyDown,!1),document.addEventListener("mouseup",this._onMouseUp,!1),i.disableDrag(),this._startPos=i.mousePos(this._el,t),this._active=!0)},_onMouseMove:function(t){var e=this._startPos,n=i.mousePos(this._el,t);this._box||(this._box=i.create("div","mapboxgl-boxzoom",this._container),this._container.classList.add("mapboxgl-crosshair"),this._fireEvent("boxzoomstart",t));var r=Math.min(e.x,n.x),a=Math.max(e.x,n.x),o=Math.min(e.y,n.y),s=Math.max(e.y,n.y);i.setTransform(this._box,"translate("+r+"px,"+o+"px)"),this._box.style.width=a-r+"px",this._box.style.height=s-o+"px"},_onMouseUp:function(t){if(0===t.button){var e=this._startPos,n=i.mousePos(this._el,t),r=new a(this._map.unproject(e),this._map.unproject(n));this._finish(),e.x===n.x&&e.y===n.y?this._fireEvent("boxzoomcancel",t):this._map.fitBounds(r,{linear:!0}).fire("boxzoomend",{originalEvent:t,boxZoomBounds:r})}},_onKeyDown:function(t){27===t.keyCode&&(this._finish(),this._fireEvent("boxzoomcancel",t))},_finish:function(){this._active=!1,document.removeEventListener("mousemove",this._onMouseMove,!1),document.removeEventListener("keydown",this._onKeyDown,!1),document.removeEventListener("mouseup",this._onMouseUp,!1),this._container.classList.remove("mapboxgl-crosshair"),this._box&&(this._box.parentNode.removeChild(this._box),this._box=null),i.enableDrag()},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})}}},{"../../geo/lng_lat_bounds":27,"../../util/dom":108,"../../util/util":119}],93:[function(t,e,n){"use strict";function r(t){this._map=t,this._onDblClick=this._onDblClick.bind(this)}e.exports=r,r.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._map.on("dblclick",this._onDblClick),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._map.off("dblclick",this._onDblClick),this._enabled=!1)},_onDblClick:function(t){this._map.zoomTo(this._map.getZoom()+(t.originalEvent.shiftKey?-1:1),{around:t.lngLat})}}},{}],94:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),a.bindHandlers(this)}var i=t("../../util/dom"),a=t("../../util/util");e.exports=r;var o=.3,s=a.bezier(0,0,o,1),l=1400,u=2500;r.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onDown),this._el.addEventListener("touchstart",this._onDown),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onDown),this._el.removeEventListener("touchstart",this._onDown),this._enabled=!1)},_onDown:function(t){this._ignoreEvent(t)||this.isActive()||(t.touches?(document.addEventListener("touchmove",this._onMove),document.addEventListener("touchend",this._onTouchEnd)):(document.addEventListener("mousemove",this._onMove),document.addEventListener("mouseup",this._onMouseUp)),this._active=!1,this._startPos=this._pos=i.mousePos(this._el,t),this._inertia=[[Date.now(),this._pos]])},_onMove:function(t){if(!this._ignoreEvent(t)){this.isActive()||(this._active=!0,this._fireEvent("dragstart",t),this._fireEvent("movestart",t));var e=i.mousePos(this._el,t),n=this._map;n.stop(),this._drainInertiaBuffer(),this._inertia.push([Date.now(),e]),n.transform.setLocationAtPoint(n.transform.pointLocation(this._pos),e),this._fireEvent("drag",t),this._fireEvent("move",t),this._pos=e,t.preventDefault()}},_onUp:function(t){if(this.isActive()){this._active=!1,this._fireEvent("dragend",t),this._drainInertiaBuffer();var e=function(){this._fireEvent("moveend",t)}.bind(this),n=this._inertia;if(n.length<2)return void e();var r=n[n.length-1],i=n[0],a=r[1].sub(i[1]),c=(r[0]-i[0])/1e3;if(0===c||r[1].equals(i[1]))return void e();var f=a.mult(o/c),h=f.mag();h>l&&(h=l,f._unit()._mult(h));var d=h/(u*o),p=f.mult(-d/2);this._map.panBy(p,{duration:1e3*d,easing:s,noMoveStart:!0},{originalEvent:t})}},_onMouseUp:function(t){this._ignoreEvent(t)||(this._onUp(t),document.removeEventListener("mousemove",this._onMove),document.removeEventListener("mouseup",this._onMouseUp))},_onTouchEnd:function(t){this._ignoreEvent(t)||(this._onUp(t),document.removeEventListener("touchmove",this._onMove),document.removeEventListener("touchend",this._onTouchEnd))},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})},_ignoreEvent:function(t){var e=this._map;if(e.boxZoom&&e.boxZoom.isActive())return!0;if(e.dragRotate&&e.dragRotate.isActive())return!0;if(t.touches)return t.touches.length>1;if(t.ctrlKey)return!0;var n=1,r=0;return"mousemove"===t.type?t.buttons&0===n:t.button!==r},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),n=160;t.length>0&&e-t[0][0]>n;)t.shift()}}},{"../../util/dom":108,"../../util/util":119}],95:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),o.bindHandlers(this)}var i=t("../../util/dom"),a=t("point-geometry"),o=t("../../util/util");e.exports=r;var s=.25,l=o.bezier(0,0,s,1),u=180,c=720;r.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onDown),this._enabled=!0);
+-},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onDown),this._enabled=!1)},_onDown:function(t){if(!this._ignoreEvent(t)&&!this.isActive()){document.addEventListener("mousemove",this._onMove),document.addEventListener("mouseup",this._onUp),this._active=!1,this._inertia=[[Date.now(),this._map.getBearing()]],this._startPos=this._pos=i.mousePos(this._el,t),this._center=this._map.transform.centerPoint;var e=this._startPos.sub(this._center),n=e.mag();200>n&&(this._center=this._startPos.add(new a(-200,0)._rotate(e.angle()))),t.preventDefault()}},_onMove:function(t){if(!this._ignoreEvent(t)){this.isActive()||(this._active=!0,this._fireEvent("rotatestart",t),this._fireEvent("movestart",t));var e=this._map;e.stop();var n=this._pos,r=i.mousePos(this._el,t),a=this._center,o=n.sub(a).angleWith(r.sub(a))/Math.PI*180,s=e.getBearing()-o,l=this._inertia,u=l[l.length-1];this._drainInertiaBuffer(),l.push([Date.now(),e._normalizeBearing(s,u[1])]),e.transform.bearing=s,this._fireEvent("rotate",t),this._fireEvent("move",t),this._pos=r}},_onUp:function(t){if(!this._ignoreEvent(t)&&(document.removeEventListener("mousemove",this._onMove),document.removeEventListener("mouseup",this._onUp),this.isActive())){this._active=!1,this._fireEvent("rotateend",t),this._drainInertiaBuffer();var e=this._map,n=e.getBearing(),r=this._inertia,i=function(){Math.abs(n)<e.options.bearingSnap?e.resetNorth({noMoveStart:!0},{originalEvent:t}):this._fireEvent("moveend",t)}.bind(this);if(r.length<2)return void i();var a=r[0],o=r[r.length-1],f=r[r.length-2],h=e._normalizeBearing(n,f[1]),d=o[1]-a[1],p=0>d?-1:1,m=(o[0]-a[0])/1e3;if(0===d||0===m)return void i();var g=Math.abs(d*(s/m));g>u&&(g=u);var v=g/(c*s),y=p*g*(v/2);h+=y,Math.abs(e._normalizeBearing(h,0))<e.options.bearingSnap&&(h=e._normalizeBearing(0,h)),e.rotateTo(h,{duration:1e3*v,easing:l,noMoveStart:!0},{originalEvent:t})}},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})},_ignoreEvent:function(t){var e=this._map;if(e.boxZoom&&e.boxZoom.isActive())return!0;if(e.dragPan&&e.dragPan.isActive())return!0;if(t.touches)return t.touches.length>1;var n=t.ctrlKey?1:2,r=t.ctrlKey?0:2;return"mousemove"===t.type?t.buttons&0===n:t.button!==r},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),n=160;t.length>0&&e-t[0][0]>n;)t.shift()}}},{"../../util/dom":108,"../../util/util":119,"point-geometry":174}],96:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),this._onKeyDown=this._onKeyDown.bind(this)}e.exports=r;var i=80,a=2,o=5;r.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("keydown",this._onKeyDown,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("keydown",this._onKeyDown),this._enabled=!1)},_onKeyDown:function(t){if(!(t.altKey||t.ctrlKey||t.metaKey)){var e=this._map,n={originalEvent:t};switch(t.keyCode){case 61:case 107:case 171:case 187:e.zoomTo(Math.round(e.getZoom())+(t.shiftKey?2:1),n);break;case 189:case 109:case 173:e.zoomTo(Math.round(e.getZoom())-(t.shiftKey?2:1),n);break;case 37:t.shiftKey?e.easeTo({bearing:e.getBearing()-a},n):(t.preventDefault(),e.panBy([-i,0],n));break;case 39:t.shiftKey?e.easeTo({bearing:e.getBearing()+a},n):(t.preventDefault(),e.panBy([i,0],n));break;case 38:t.shiftKey?e.easeTo({pitch:e.getPitch()+o},n):(t.preventDefault(),e.panBy([0,-i],n));break;case 40:t.shiftKey?e.easeTo({pitch:Math.max(e.getPitch()-o,0)},n):(t.preventDefault(),e.panBy([0,i],n))}}}}},{}],97:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),o.bindHandlers(this)}var i=t("../../util/dom"),a=t("../../util/browser"),o=t("../../util/util");e.exports=r;var s="undefined"!=typeof navigator?navigator.userAgent.toLowerCase():"",l=-1!==s.indexOf("firefox"),u=-1!==s.indexOf("safari")&&-1===s.indexOf("chrom");r.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("wheel",this._onWheel,!1),this._el.addEventListener("mousewheel",this._onWheel,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("wheel",this._onWheel),this._el.removeEventListener("mousewheel",this._onWheel),this._enabled=!1)},_onWheel:function(t){var e;"wheel"===t.type?(e=t.deltaY,l&&t.deltaMode===window.WheelEvent.DOM_DELTA_PIXEL&&(e/=a.devicePixelRatio),t.deltaMode===window.WheelEvent.DOM_DELTA_LINE&&(e*=40)):"mousewheel"===t.type&&(e=-t.wheelDeltaY,u&&(e/=3));var n=a.now(),r=n-(this._time||0);this._pos=i.mousePos(this._el,t),this._time=n,0!==e&&e%4.000244140625===0?(this._type="wheel",e=Math.floor(e/4)):0!==e&&Math.abs(e)<4?this._type="trackpad":r>400?(this._type=null,this._lastValue=e,this._timeout=setTimeout(this._onTimeout,40)):this._type||(this._type=Math.abs(r*e)<200?"trackpad":"wheel",this._timeout&&(clearTimeout(this._timeout),this._timeout=null,e+=this._lastValue)),t.shiftKey&&e&&(e/=4),this._type&&this._zoom(-e,t),t.preventDefault()},_onTimeout:function(){this._type="wheel",this._zoom(-this._lastValue)},_zoom:function(t,e){if(0!==t){var n=this._map,r=2/(1+Math.exp(-Math.abs(t/100)));0>t&&0!==r&&(r=1/r);var i=n.ease?n.ease.to:n.transform.scale,a=n.transform.scaleZoom(i*r);n.zoomTo(a,{duration:0,around:n.unproject(this._pos),delayEndEvents:200},{originalEvent:e})}}}},{"../../util/browser":105,"../../util/dom":108,"../../util/util":119}],98:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),a.bindHandlers(this)}var i=t("../../util/dom"),a=t("../../util/util");e.exports=r;var o=.15,s=a.bezier(0,0,o,1),l=12,u=2.5,c=.15,f=4;r.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("touchstart",this._onStart,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("touchstart",this._onStart),this._enabled=!1)},disableRotation:function(){this._rotationDisabled=!0},enableRotation:function(){this._rotationDisabled=!1},_onStart:function(t){if(2===t.touches.length){var e=i.mousePos(this._el,t.touches[0]),n=i.mousePos(this._el,t.touches[1]);this._startVec=e.sub(n),this._startScale=this._map.transform.scale,this._startBearing=this._map.transform.bearing,this._gestureIntent=void 0,this._inertia=[],document.addEventListener("touchmove",this._onMove,!1),document.addEventListener("touchend",this._onEnd,!1)}},_onMove:function(t){if(2===t.touches.length){var e=i.mousePos(this._el,t.touches[0]),n=i.mousePos(this._el,t.touches[1]),r=e.add(n).div(2),a=e.sub(n),o=a.mag()/this._startVec.mag(),s=this._rotationDisabled?0:180*a.angleWith(this._startVec)/Math.PI,l=this._map;if(this._gestureIntent){var u={duration:0,around:l.unproject(r)};"rotate"===this._gestureIntent&&(u.bearing=this._startBearing+s),"zoom"!==this._gestureIntent&&"rotate"!==this._gestureIntent||(u.zoom=l.transform.scaleZoom(this._startScale*o)),l.stop(),this._drainInertiaBuffer(),this._inertia.push([Date.now(),o,r]),l.easeTo(u,{originalEvent:t})}else{var h=Math.abs(1-o)>c,d=Math.abs(s)>f;d?this._gestureIntent="rotate":h&&(this._gestureIntent="zoom"),this._gestureIntent&&(this._startVec=a,this._startScale=l.transform.scale,this._startBearing=l.transform.bearing)}t.preventDefault()}},_onEnd:function(t){document.removeEventListener("touchmove",this._onMove),document.removeEventListener("touchend",this._onEnd),this._drainInertiaBuffer();var e=this._inertia,n=this._map;if(e.length<2)return void n.snapToNorth({},{originalEvent:t});var r=e[e.length-1],i=e[0],a=n.transform.scaleZoom(this._startScale*r[1]),c=n.transform.scaleZoom(this._startScale*i[1]),f=a-c,h=(r[0]-i[0])/1e3,d=r[2];if(0===h||a===c)return void n.snapToNorth({},{originalEvent:t});var p=f*o/h;Math.abs(p)>u&&(p=p>0?u:-u);var m=1e3*Math.abs(p/(l*o)),g=a+p*m/2e3;0>g&&(g=0),n.easeTo({zoom:g,duration:m,easing:s,around:n.unproject(d)},{originalEvent:t})},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),n=160;t.length>2&&e-t[0][0]>n;)t.shift()}}},{"../../util/dom":108,"../../util/util":119}],99:[function(t,e,n){"use strict";function r(){i.bindAll(["_onHashChange","_updateHash"],this)}e.exports=r;var i=t("../util/util");r.prototype={addTo:function(t){return this._map=t,window.addEventListener("hashchange",this._onHashChange,!1),this._map.on("moveend",this._updateHash),this},remove:function(){return window.removeEventListener("hashchange",this._onHashChange,!1),this._map.off("moveend",this._updateHash),delete this._map,this},_onHashChange:function(){var t=location.hash.replace("#","").split("/");return t.length>=3?(this._map.jumpTo({center:[+t[2],+t[1]],zoom:+t[0],bearing:+(t[3]||0)}),!0):!1},_updateHash:function(){var t=this._map.getCenter(),e=this._map.getZoom(),n=this._map.getBearing(),r=Math.max(0,Math.ceil(Math.log(e)/Math.LN2)),i="#"+Math.round(100*e)/100+"/"+t.lat.toFixed(r)+"/"+t.lng.toFixed(r)+(n?"/"+Math.round(10*n)/10:"");window.history.replaceState("","",i)}}},{"../util/util":119}],100:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer();for(var e in i)t[e]=new i[e](t);o.bindHandlers(this)}var i={scrollZoom:t("./handler/scroll_zoom"),boxZoom:t("./handler/box_zoom"),dragRotate:t("./handler/drag_rotate"),dragPan:t("./handler/drag_pan"),keyboard:t("./handler/keyboard"),doubleClickZoom:t("./handler/dblclick_zoom"),touchZoomRotate:t("./handler/touch_zoom_rotate")},a=t("../util/dom"),o=t("../util/util"),s=t("point-geometry");e.exports=r,r.prototype={enable:function(){var t=this._map.options,e=this._el;for(var n in i)t[n]&&this._map[n].enable();e.addEventListener("mousedown",this._onMouseDown,!1),e.addEventListener("mouseup",this._onMouseUp,!1),e.addEventListener("mousemove",this._onMouseMove,!1),e.addEventListener("touchstart",this._onTouchStart,!1),e.addEventListener("touchend",this._onTouchEnd,!1),e.addEventListener("touchmove",this._onTouchMove,!1),e.addEventListener("touchcancel",this._onTouchCancel,!1),e.addEventListener("click",this._onClick,!1),e.addEventListener("dblclick",this._onDblClick,!1),e.addEventListener("contextmenu",this._onContextMenu,!1)},disable:function(){var t=this._map.options,e=this._el;for(var n in i)t[n]&&this._map[n].disable();e.removeEventListener("mousedown",this._onMouseDown),e.removeEventListener("mouseup",this._onMouseUp),e.removeEventListener("mousemove",this._onMouseMove),e.removeEventListener("touchstart",this._onTouchStart),e.removeEventListener("touchend",this._onTouchEnd),e.removeEventListener("touchmove",this._onTouchMove),e.removeEventListener("touchcancel",this._onTouchCancel),e.removeEventListener("click",this._onClick),e.removeEventListener("dblclick",this._onDblClick),e.removeEventListener("contextmenu",this._onContextMenu)},_onMouseDown:function(t){this._map.stop(),this._startPos=a.mousePos(this._el,t),this._fireMouseEvent("mousedown",t)},_onMouseUp:function(t){var e=this._map,n=e.dragRotate&&e.dragRotate.isActive();this._contextMenuEvent&&!n&&this._fireMouseEvent("contextmenu",this._contextMenuEvent),this._contextMenuEvent=null,this._fireMouseEvent("mouseup",t)},_onMouseMove:function(t){var e=this._map,n=this._el;if(!(e.dragPan&&e.dragPan.isActive()||e.dragRotate&&e.dragRotate.isActive())){for(var r=t.toElement||t.target;r&&r!==n;)r=r.parentNode;r===n&&this._fireMouseEvent("mousemove",t)}},_onTouchStart:function(t){this._map.stop(),this._fireTouchEvent("touchstart",t),!t.touches||t.touches.length>1||(this._tapped?(clearTimeout(this._tapped),this._tapped=null,this._fireMouseEvent("dblclick",t)):this._tapped=setTimeout(this._onTouchTimeout,300))},_onTouchMove:function(t){this._fireTouchEvent("touchmove",t)},_onTouchEnd:function(t){this._fireTouchEvent("touchend",t)},_onTouchCancel:function(t){this._fireTouchEvent("touchcancel",t)},_onTouchTimeout:function(){this._tapped=null},_onClick:function(t){var e=a.mousePos(this._el,t);e.equals(this._startPos)&&this._fireMouseEvent("click",t)},_onDblClick:function(t){this._fireMouseEvent("dblclick",t),t.preventDefault()},_onContextMenu:function(t){this._contextMenuEvent=t,t.preventDefault()},_fireMouseEvent:function(t,e){var n=a.mousePos(this._el,e);return this._map.fire(t,{lngLat:this._map.unproject(n),point:n,originalEvent:e})},_fireTouchEvent:function(t,e){var n=a.touchPos(this._el,e),r=n.reduce(function(t,e,n,r){return t.add(e.div(r.length))},new s(0,0));return this._map.fire(t,{lngLat:this._map.unproject(r),point:r,lngLats:n.map(function(t){return this._map.unproject(t)},this),points:n,originalEvent:e})}}},{"../util/dom":108,"../util/util":119,"./handler/box_zoom":92,"./handler/dblclick_zoom":93,"./handler/drag_pan":94,"./handler/drag_rotate":95,"./handler/keyboard":96,"./handler/scroll_zoom":97,"./handler/touch_zoom_rotate":98,"point-geometry":174}],101:[function(t,e,n){"use strict";function r(t){t.parentNode&&t.parentNode.removeChild(t)}var i=t("../util/canvas"),a=t("../util/util"),o=t("../util/browser"),s=t("../util/evented"),l=t("../util/dom"),u=t("../style/style"),c=t("../style/animation_loop"),f=t("../render/painter"),h=t("../geo/transform"),d=t("./hash"),p=t("./interaction"),m=t("./camera"),g=t("../geo/lng_lat"),v=t("../geo/lng_lat_bounds"),y=t("point-geometry"),x=t("./control/attribution"),_=0,b=20,w=e.exports=function(t){t=a.inherit(this.options,t),this._interactive=t.interactive,this._failIfMajorPerformanceCaveat=t.failIfMajorPerformanceCaveat,this._preserveDrawingBuffer=t.preserveDrawingBuffer,"string"==typeof t.container?this._container=document.getElementById(t.container):this._container=t.container,this.animationLoop=new c,this.transform=new h(t.minZoom,t.maxZoom),t.maxBounds&&this.setMaxBounds(t.maxBounds),a.bindAll(["_forwardStyleEvent","_forwardSourceEvent","_forwardLayerEvent","_forwardTileEvent","_onStyleLoad","_onStyleChange","_onSourceAdd","_onSourceRemove","_onSourceUpdate","_onWindowResize","onError","_update","_render"],this),this._setupContainer(),this._setupPainter(),this.on("move",this._update.bind(this,!1)),this.on("zoom",this._update.bind(this,!0)),this.on("moveend",function(){this.animationLoop.set(300),this._rerender()}.bind(this)),"undefined"!=typeof window&&window.addEventListener("resize",this._onWindowResize,!1),this.interaction=new p(this),t.interactive&&this.interaction.enable(),this._hash=t.hash&&(new d).addTo(this),this._hash&&this._hash._onHashChange()||this.jumpTo(t),this.stacks={},this._classes=[],this.resize(),t.classes&&this.setClasses(t.classes),t.style&&this.setStyle(t.style),t.attributionControl&&this.addControl(new x(t.attributionControl)),this.on("style.error",this.onError),this.on("source.error",this.onError),this.on("tile.error",this.onError),this.on("layer.error",this.onError)};a.extend(w.prototype,s),a.extend(w.prototype,m.prototype),a.extend(w.prototype,{options:{center:[0,0],zoom:0,bearing:0,pitch:0,minZoom:_,maxZoom:b,interactive:!0,scrollZoom:!0,boxZoom:!0,dragRotate:!0,dragPan:!0,keyboard:!0,doubleClickZoom:!0,touchZoomRotate:!0,bearingSnap:7,hash:!1,attributionControl:!0,failIfMajorPerformanceCaveat:!1,preserveDrawingBuffer:!1},addControl:function(t){return t.addTo(this),this},addClass:function(t,e){return this._classes.indexOf(t)>=0||""===t?this:(this._classes.push(t),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0))},removeClass:function(t,e){var n=this._classes.indexOf(t);return 0>n||""===t?this:(this._classes.splice(n,1),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0))},setClasses:function(t,e){for(var n={},r=0;r<t.length;r++)""!==t[r]&&(n[t[r]]=!0);return this._classes=Object.keys(n),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0)},hasClass:function(t){return this._classes.indexOf(t)>=0},getClasses:function(){return this._classes},resize:function(){var t=0,e=0;return this._container&&(t=this._container.offsetWidth||400,e=this._container.offsetHeight||300),this._canvas.resize(t,e),this.transform.resize(t,e),this.painter.resize(t,e),this.fire("movestart").fire("move").fire("resize").fire("moveend")},getBounds:function(){var t=new v(this.transform.pointLocation(new y(0,0)),this.transform.pointLocation(this.transform.size));return(this.transform.angle||this.transform.pitch)&&(t.extend(this.transform.pointLocation(new y(this.transform.size.x,0))),t.extend(this.transform.pointLocation(new y(0,this.transform.size.y)))),t},setMaxBounds:function(t){if(t){var e=v.convert(t);this.transform.lngRange=[e.getWest(),e.getEast()],this.transform.latRange=[e.getSouth(),e.getNorth()],this.transform._constrain(),this._update()}else null!==t&&void 0!==t||(this.transform.lngRange=[],this.transform.latRange=[],this._update());return this},setMinZoom:function(t){if(t=null===t||void 0===t?_:t,t>=_&&t<=this.transform.maxZoom)return this.transform.minZoom=t,this._update(),this.getZoom()<t&&this.setZoom(t),this;throw new Error("minZoom must be between "+_+" and the current maxZoom, inclusive")},setMaxZoom:function(t){if(t=null===t||void 0===t?b:t,t>=this.transform.minZoom&&b>=t)return this.transform.maxZoom=t,this._update(),this.getZoom()>t&&this.setZoom(t),this;throw new Error("maxZoom must be between the current minZoom and "+b+", inclusive")},project:function(t){return this.transform.locationPoint(g.convert(t))},unproject:function(t){return this.transform.pointLocation(y.convert(t))},queryRenderedFeatures:function(t,e){t instanceof y||Array.isArray(t)||(e=t,t=void 0);var n=this._makeQueryGeometry(t);return this.style.queryRenderedFeatures(n,e,this.transform.zoom,this.transform.angle)},_makeQueryGeometry:function(t){void 0===t&&(t=[y.convert([0,0]),y.convert([this.transform.width,this.transform.height])]);var e,n=t instanceof y||"number"==typeof t[0];if(n){var r=y.convert(t);e=[r]}else{var i=[y.convert(t[0]),y.convert(t[1])];e=[i[0],new y(i[1].x,i[0].y),i[1],new y(i[0].x,i[1].y),i[0]]}return e=e.map(function(t){return this.transform.pointCoordinate(t)}.bind(this))},querySourceFeatures:function(t,e){return this.style.querySourceFeatures(t,e)},setStyle:function(t){return this.style&&(this.style.off("load",this._onStyleLoad).off("error",this._forwardStyleEvent).off("change",this._onStyleChange).off("source.add",this._onSourceAdd).off("source.remove",this._onSourceRemove).off("source.load",this._onSourceUpdate).off("source.error",this._forwardSourceEvent).off("source.change",this._onSourceUpdate).off("layer.add",this._forwardLayerEvent).off("layer.remove",this._forwardLayerEvent).off("layer.error",this._forwardLayerEvent).off("tile.add",this._forwardTileEvent).off("tile.remove",this._forwardTileEvent).off("tile.load",this._update).off("tile.error",this._forwardTileEvent).off("tile.stats",this._forwardTileEvent)._remove(),this.off("rotate",this.style._redoPlacement),this.off("pitch",this.style._redoPlacement)),t?(t instanceof u?this.style=t:this.style=new u(t,this.animationLoop),this.style.on("load",this._onStyleLoad).on("error",this._forwardStyleEvent).on("change",this._onStyleChange).on("source.add",this._onSourceAdd).on("source.remove",this._onSourceRemove).on("source.load",this._onSourceUpdate).on("source.error",this._forwardSourceEvent).on("source.change",this._onSourceUpdate).on("layer.add",this._forwardLayerEvent).on("layer.remove",this._forwardLayerEvent).on("layer.error",this._forwardLayerEvent).on("tile.add",this._forwardTileEvent).on("tile.remove",this._forwardTileEvent).on("tile.load",this._update).on("tile.error",this._forwardTileEvent).on("tile.stats",this._forwardTileEvent),this.on("rotate",this.style._redoPlacement),this.on("pitch",this.style._redoPlacement),this):(this.style=null,this)},getStyle:function(){return this.style.serialize()},addSource:function(t,e){return this.style.addSource(t,e),this._update(!0),this},removeSource:function(t){return this.style.removeSource(t),this._update(!0),this},getSource:function(t){return this.style.getSource(t)},addLayer:function(t,e){return this.style.addLayer(t,e),this._update(!0),this},removeLayer:function(t){return this.style.removeLayer(t),this._update(!0),this},getLayer:function(t){return this.style.getLayer(t)},setFilter:function(t,e){return this.style.setFilter(t,e),this._update(!0),this},setLayerZoomRange:function(t,e,n){return this.style.setLayerZoomRange(t,e,n),this._update(!0),this},getFilter:function(t){return this.style.getFilter(t)},setPaintProperty:function(t,e,n,r){return this.style.setPaintProperty(t,e,n,r),this._update(!0),this},getPaintProperty:function(t,e,n){return this.style.getPaintProperty(t,e,n)},setLayoutProperty:function(t,e,n){return this.style.setLayoutProperty(t,e,n),this._update(!0),this},getLayoutProperty:function(t,e){return this.style.getLayoutProperty(t,e)},getContainer:function(){return this._container},getCanvasContainer:function(){return this._canvasContainer},getCanvas:function(){return this._canvas.getElement()},_setupContainer:function(){var t=this._container;t.classList.add("mapboxgl-map");var e=this._canvasContainer=l.create("div","mapboxgl-canvas-container",t);this._interactive&&e.classList.add("mapboxgl-interactive"),this._canvas=new i(this,e);var n=this._controlContainer=l.create("div","mapboxgl-control-container",t),r=this._controlCorners={};["top-left","top-right","bottom-left","bottom-right"].forEach(function(t){r[t]=l.create("div","mapboxgl-ctrl-"+t,n)})},_setupPainter:function(){var t=this._canvas.getWebGLContext({failIfMajorPerformanceCaveat:this._failIfMajorPerformanceCaveat,preserveDrawingBuffer:this._preserveDrawingBuffer});return t?void(this.painter=new f(t,this.transform)):void console.error("Failed to initialize WebGL")},_contextLost:function(t){t.preventDefault(),this._frameId&&o.cancelFrame(this._frameId),this.fire("webglcontextlost",{originalEvent:t})},_contextRestored:function(t){this._setupPainter(),this.resize(),this._update(),this.fire("webglcontextrestored",{originalEvent:t})},loaded:function(){return this._styleDirty||this._sourcesDirty?!1:!(!this.style||!this.style.loaded())},_update:function(t){return this.style?(this._styleDirty=this._styleDirty||t,this._sourcesDirty=!0,this._rerender(),this):this},_render:function(){return this.style&&this._styleDirty&&(this._styleDirty=!1,this.style.update(this._classes,this._classOptions),this._classOptions=null,this.style._recalculate(this.transform.zoom)),this.style&&this._sourcesDirty&&(this._sourcesDirty=!1,this.style._updateSources(this.transform)),this.painter.render(this.style,{debug:this.showTileBoundaries,showOverdrawInspector:this._showOverdrawInspector,vertices:this.vertices,rotating:this.rotating,zooming:this.zooming}),this.fire("render"),this.loaded()&&!this._loaded&&(this._loaded=!0,this.fire("load")),this._frameId=null,this.animationLoop.stopped()||(this._styleDirty=!0),(this._sourcesDirty||this._repaint||!this.animationLoop.stopped())&&this._rerender(),this},remove:function(){this._hash&&this._hash.remove(),o.cancelFrame(this._frameId),this.setStyle(null),"undefined"!=typeof window&&window.removeEventListener("resize",this._onWindowResize,!1),r(this._canvasContainer),r(this._controlContainer),this._container.classList.remove("mapboxgl-map")},onError:function(t){console.error(t.error)},_rerender:function(){this.style&&!this._frameId&&(this._frameId=o.frame(this._render))},_forwardStyleEvent:function(t){this.fire("style."+t.type,a.extend({style:t.target},t))},_forwardSourceEvent:function(t){this.fire(t.type,a.extend({style:t.target},t))},_forwardLayerEvent:function(t){this.fire(t.type,a.extend({style:t.target},t))},_forwardTileEvent:function(t){this.fire(t.type,a.extend({style:t.target},t))},_onStyleLoad:function(t){this.transform.unmodified&&this.jumpTo(this.style.stylesheet),this.style.update(this._classes,{transition:!1}),this._forwardStyleEvent(t)},_onStyleChange:function(t){this._update(!0),this._forwardStyleEvent(t)},_onSourceAdd:function(t){var e=t.source;e.onAdd&&e.onAdd(this),this._forwardSourceEvent(t)},_onSourceRemove:function(t){var e=t.source;e.onRemove&&e.onRemove(this),this._forwardSourceEvent(t)},_onSourceUpdate:function(t){this._update(),this._forwardSourceEvent(t)},_onWindowResize:function(){this.stop().resize()._update()}}),a.extendAll(w.prototype,{_showTileBoundaries:!1,get showTileBoundaries(){return this._showTileBoundaries},set showTileBoundaries(t){this._showTileBoundaries!==t&&(this._showTileBoundaries=t,this._update())},_showCollisionBoxes:!1,get showCollisionBoxes(){return this._showCollisionBoxes},set showCollisionBoxes(t){this._showCollisionBoxes!==t&&(this._showCollisionBoxes=t,this.style._redoPlacement())},_showOverdrawInspector:!1,get showOverdrawInspector(){return this._showOverdrawInspector},set showOverdrawInspector(t){this._showOverdrawInspector!==t&&(this._showOverdrawInspector=t,this._update())},_repaint:!1,get repaint(){return this._repaint},set repaint(t){this._repaint=t,this._update()},_vertices:!1,get vertices(){return this._vertices},set vertices(t){this._vertices=t,this._update()}})},{"../geo/lng_lat":26,"../geo/lng_lat_bounds":27,"../geo/transform":28,"../render/painter":41,"../style/animation_loop":57,"../style/style":60,"../util/browser":105,"../util/canvas":106,"../util/dom":108,"../util/evented":111,"../util/util":119,"./camera":87,"./control/attribution":88,"./hash":99,"./interaction":100,"point-geometry":174}],102:[function(t,e,n){"use strict";function r(t){i.setOptions(this,t),i.bindAll(["_update","_onClickClose"],this)}e.exports=r;var i=t("../util/util"),a=t("../util/evented"),o=t("../util/dom"),s=t("../geo/lng_lat");r.prototype=i.inherit(a,{options:{closeButton:!0,closeOnClick:!0},addTo:function(t){return this._map=t,this._map.on("move",this._update),this.options.closeOnClick&&this._map.on("click",this._onClickClose),this._update(),this},remove:function(){return this._content&&this._content.parentNode&&this._content.parentNode.removeChild(this._content),this._container&&(this._container.parentNode.removeChild(this._container),delete this._container),this._map&&(this._map.off("move",this._update),this._map.off("click",this._onClickClose),delete this._map),this},getLngLat:function(){return this._lngLat},setLngLat:function(t){return this._lngLat=s.convert(t),this._update(),this},setText:function(t){return this.setDOMContent(document.createTextNode(t))},setHTML:function(t){var e,n=document.createDocumentFragment(),r=document.createElement("body");for(r.innerHTML=t;;){if(e=r.firstChild,!e)break;n.appendChild(e)}return this.setDOMContent(n)},setDOMContent:function(t){return this._createContent(),this._content.appendChild(t),this._update(),this},_createContent:function(){this._content&&this._content.parentNode&&this._content.parentNode.removeChild(this._content),this._content=o.create("div","mapboxgl-popup-content",this._container),this.options.closeButton&&(this._closeButton=o.create("button","mapboxgl-popup-close-button",this._content),this._closeButton.innerHTML="&#215;",this._closeButton.addEventListener("click",this._onClickClose))},_update:function(){if(this._map&&this._lngLat&&this._content){this._container||(this._container=o.create("div","mapboxgl-popup",this._map.getContainer()),this._tip=o.create("div","mapboxgl-popup-tip",this._container),this._container.appendChild(this._content));var t=this._map.project(this._lngLat).round(),e=this.options.anchor;if(!e){var n=this._container.offsetWidth,r=this._container.offsetHeight;e=t.y<r?["top"]:t.y>this._map.transform.height-r?["bottom"]:[],t.x<n/2?e.push("left"):t.x>this._map.transform.width-n/2&&e.push("right"),e=0===e.length?"bottom":e.join("-")}var i={top:"translate(-50%,0)","top-left":"translate(0,0)","top-right":"translate(-100%,0)",bottom:"translate(-50%,-100%)","bottom-left":"translate(0,-100%)","bottom-right":"translate(-100%,-100%)",left:"translate(0,-50%)",right:"translate(-100%,-50%)"},a=this._container.classList;for(var s in i)a.remove("mapboxgl-popup-anchor-"+s);a.add("mapboxgl-popup-anchor-"+e),o.setTransform(this._container,i[e]+" translate("+t.x+"px,"+t.y+"px)")}},_onClickClose:function(){this.remove()}})},{"../geo/lng_lat":26,"../util/dom":108,"../util/evented":111,"../util/util":119}],103:[function(t,e,n){"use strict";function r(t,e){this.target=t,this.parent=e,this.callbacks={},this.callbackID=0,this.receive=this.receive.bind(this),this.target.addEventListener("message",this.receive,!1)}e.exports=r,r.prototype.receive=function(t){var e,n=t.data;if("<response>"===n.type)e=this.callbacks[n.id],delete this.callbacks[n.id],e(n.error||null,n.data);else if("undefined"!=typeof n.id){var r=n.id;this.parent[n.type](n.data,function(t,e,n){this.postMessage({type:"<response>",id:String(r),error:t?String(t):null,data:e},n)}.bind(this))}else this.parent[n.type](n.data)},r.prototype.send=function(t,e,n,r){var i=null;n&&(this.callbacks[i=this.callbackID++]=n),this.postMessage({type:t,id:String(i),data:e},r)},r.prototype.postMessage=function(t,e){this.target.postMessage(t,e)}},{}],104:[function(t,e,n){"use strict";function r(t){var e=document.createElement("a");return e.href=t,e.protocol===document.location.protocol&&e.host===document.location.host}n.getJSON=function(t,e){var n=new XMLHttpRequest;return n.open("GET",t,!0),n.setRequestHeader("Accept","application/json"),n.onerror=function(t){e(t)},n.onload=function(){if(n.status>=200&&n.status<300&&n.response){var t;try{t=JSON.parse(n.response)}catch(r){return e(r)}e(null,t)}else e(new Error(n.statusText))},n.send(),n},n.getArrayBuffer=function(t,e){var n=new XMLHttpRequest;return n.open("GET",t,!0),n.responseType="arraybuffer",n.onerror=function(t){e(t)},n.onload=function(){n.status>=200&&n.status<300&&n.response?e(null,n.response):e(new Error(n.statusText))},n.send(),n},n.getImage=function(t,e){return n.getArrayBuffer(t,function(t,n){if(t)return e(t);var r=new Image;r.onload=function(){e(null,r),(window.URL||window.webkitURL).revokeObjectURL(r.src)};var i=new Blob([new Uint8Array(n)],{type:"image/png"});return r.src=(window.URL||window.webkitURL).createObjectURL(i),r.getData=function(){var t=document.createElement("canvas"),e=t.getContext("2d");return t.width=r.width,t.height=r.height,e.drawImage(r,0,0),e.getImageData(0,0,r.width,r.height).data},r})},n.getVideo=function(t,e){var n=document.createElement("video");n.onloadstart=function(){e(null,n)};for(var i=0;i<t.length;i++){var a=document.createElement("source");r(t[i])||(n.crossOrigin="Anonymous"),a.src=t[i],n.appendChild(a)}return n.getData=function(){return n},n}},{}],105:[function(t,e,n){"use strict";e.exports.now=function(){return window.performance&&window.performance.now?window.performance.now.bind(window.performance):Date.now.bind(Date)}();var r=window.requestAnimationFrame||window.mozRequestAnimationFrame||window.webkitRequestAnimationFrame||window.msRequestAnimationFrame;n.frame=function(t){return r(t)};var i=window.cancelAnimationFrame||window.mozCancelAnimationFrame||window.webkitCancelAnimationFrame||window.msCancelAnimationFrame;n.cancelFrame=function(t){i(t)},n.timed=function(t,r,i){function a(l){o||(l=e.exports.now(),l>=s+r?t.call(i,1):(t.call(i,(l-s)/r),n.frame(a)))}if(!r)return t.call(i,1),null;var o=!1,s=e.exports.now();return n.frame(a),function(){o=!0}},n.supported=t("mapbox-gl-js-supported"),n.hardwareConcurrency=navigator.hardwareConcurrency||8,Object.defineProperty(n,"devicePixelRatio",{get:function(){return window.devicePixelRatio}}),n.supportsWebp=!1;var a=document.createElement("img");a.onload=function(){n.supportsWebp=!0},a.src="data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=",n.supportsGeolocation=!!navigator.geolocation},{"mapbox-gl-js-supported":145}],106:[function(t,e,n){"use strict";function r(t,e){this.canvas=document.createElement("canvas"),t&&e&&(this.canvas.style.position="absolute",this.canvas.classList.add("mapboxgl-canvas"),this.canvas.addEventListener("webglcontextlost",t._contextLost.bind(t),!1),this.canvas.addEventListener("webglcontextrestored",t._contextRestored.bind(t),!1),this.canvas.setAttribute("tabindex",0),e.appendChild(this.canvas))}var i=t("../util"),a=t("mapbox-gl-js-supported");e.exports=r,r.prototype.resize=function(t,e){
+-var n=window.devicePixelRatio||1;this.canvas.width=n*t,this.canvas.height=n*e,this.canvas.style.width=t+"px",this.canvas.style.height=e+"px"},r.prototype.getWebGLContext=function(t){return t=i.extend({},t,a.webGLContextAttributes),this.canvas.getContext("webgl",t)||this.canvas.getContext("experimental-webgl",t)},r.prototype.getElement=function(){return this.canvas}},{"../util":119,"mapbox-gl-js-supported":145}],107:[function(t,e,n){"use strict";function r(e,n){this.actors=[],this.currentActor=0;for(var r=0;e>r;r++){var o=new a(t("../../source/worker")),s=new i(o,n);s.name="Worker "+r,this.actors.push(s)}}var i=t("../actor"),a=t("webworkify");e.exports=r,r.prototype={broadcast:function(t,e){for(var n=0;n<this.actors.length;n++)this.actors[n].send(t,e)},send:function(t,e,n,r,i){return("number"!=typeof r||isNaN(r))&&(r=this.currentActor=(this.currentActor+1)%this.actors.length),this.actors[r].send(t,e,n,i),r},remove:function(){for(var t=0;t<this.actors.length;t++)this.actors[t].target.terminate();this.actors=[]}}},{"../../source/worker":55,"../actor":103,webworkify:190}],108:[function(t,e,n){"use strict";function r(t){for(var e=0;e<t.length;e++)if(t[e]in s)return t[e]}function i(t){t.preventDefault(),t.stopPropagation(),window.removeEventListener("click",i,!0)}var a=t("point-geometry");n.create=function(t,e,n){var r=document.createElement(t);return e&&(r.className=e),n&&n.appendChild(r),r};var o,s=document.documentElement.style,l=r(["userSelect","MozUserSelect","WebkitUserSelect","msUserSelect"]);n.disableDrag=function(){l&&(o=s[l],s[l]="none")},n.enableDrag=function(){l&&(s[l]=o)};var u=r(["transform","WebkitTransform"]);n.setTransform=function(t,e){t.style[u]=e},n.suppressClick=function(){window.addEventListener("click",i,!0),window.setTimeout(function(){window.removeEventListener("click",i,!0)},0)},n.mousePos=function(t,e){var n=t.getBoundingClientRect();return e=e.touches?e.touches[0]:e,new a(e.clientX-n.left-t.clientLeft,e.clientY-n.top-t.clientTop)},n.touchPos=function(t,e){for(var n=t.getBoundingClientRect(),r=[],i=0;i<e.touches.length;i++)r.push(new a(e.touches[i].clientX-n.left-t.clientLeft,e.touches[i].clientY-n.top-t.clientTop));return r}},{"point-geometry":174}],109:[function(t,e,n){"use strict";e.exports={API_URL:"https://api.mapbox.com",REQUIRE_ACCESS_TOKEN:!0}},{}],110:[function(t,e,n){"use strict";function r(t){this._stringToNumber={},this._numberToString=[];for(var e=0;e<t.length;e++){var n=t[e];this._stringToNumber[n]=e,this._numberToString[e]=n}}var i=t("assert");e.exports=r,r.prototype.encode=function(t){return i(t in this._stringToNumber),this._stringToNumber[t]},r.prototype.decode=function(t){return i(t<this._numberToString.length),this._numberToString[t]}},{assert:6}],111:[function(t,e,n){"use strict";var r=t("./util"),i={on:function(t,e){return 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t[0]=d*r+h*o,t[1]=d*i+h*s,t[2]=d*a+h*l,t[3]=d*o-h*r,t[4]=d*s-h*i,t[5]=d*l-h*a,t[6]=u,t[7]=c,t[8]=f,t},i.scale=function(t,e,n){var r=n[0],i=n[1];return t[0]=r*e[0],t[1]=r*e[1],t[2]=r*e[2],t[3]=i*e[3],t[4]=i*e[4],t[5]=i*e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t},i.fromTranslation=function(t,e){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=1,t[5]=0,t[6]=e[0],t[7]=e[1],t[8]=1,t},i.fromRotation=function(t,e){var n=Math.sin(e),r=Math.cos(e);return t[0]=r,t[1]=n,t[2]=0,t[3]=-n,t[4]=r,t[5]=0,t[6]=0,t[7]=0,t[8]=1,t},i.fromScaling=function(t,e){return t[0]=e[0],t[1]=0,t[2]=0,t[3]=0,t[4]=e[1],t[5]=0,t[6]=0,t[7]=0,t[8]=1,t},i.fromMat2d=function(t,e){return t[0]=e[0],t[1]=e[1],t[2]=0,t[3]=e[2],t[4]=e[3],t[5]=0,t[6]=e[4],t[7]=e[5],t[8]=1,t},i.fromQuat=function(t,e){var n=e[0],r=e[1],i=e[2],a=e[3],o=n+n,s=r+r,l=i+i,u=n*o,c=r*o,f=r*s,h=i*o,d=i*s,p=i*l,m=a*o,g=a*s,v=a*l;return t[0]=1-f-p,t[3]=c-v,t[6]=h+g,t[1]=c+v,t[4]=1-u-p,t[7]=d-m,t[2]=h-g,t[5]=d+m,t[8]=1-u-f,t},i.normalFromMat4=function(t,e){var 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e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e[4]=t[4],e[5]=t[5],e[6]=t[6],e[7]=t[7],e[8]=t[8],e[9]=t[9],e[10]=t[10],e[11]=t[11],e[12]=t[12],e[13]=t[13],e[14]=t[14],e[15]=t[15],e},i.copy=function(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.fromValues=function(t,e,n,i,a,o,s,l,u,c,f,h,d,p,m,g){var v=new r.ARRAY_TYPE(16);return v[0]=t,v[1]=e,v[2]=n,v[3]=i,v[4]=a,v[5]=o,v[6]=s,v[7]=l,v[8]=u,v[9]=c,v[10]=f,v[11]=h,v[12]=d,v[13]=p,v[14]=m,v[15]=g,v},i.set=function(t,e,n,r,i,a,o,s,l,u,c,f,h,d,p,m,g){return t[0]=e,t[1]=n,t[2]=r,t[3]=i,t[4]=a,t[5]=o,t[6]=s,t[7]=l,t[8]=u,t[9]=c,t[10]=f,t[11]=h,t[12]=d,t[13]=p,t[14]=m,t[15]=g,t},i.identity=function(t){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.scalar.transpose=function(t,e){if(t===e){var n=e[1],r=e[2],i=e[3],a=e[6],o=e[7],s=e[11];t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=n,t[6]=e[9],t[7]=e[13],t[8]=r,t[9]=a,t[11]=e[14],t[12]=i,t[13]=o,t[14]=s}else t[0]=e[0],t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=e[1],t[5]=e[5],t[6]=e[9],t[7]=e[13],t[8]=e[2],t[9]=e[6],t[10]=e[10],t[11]=e[14],t[12]=e[3],t[13]=e[7],t[14]=e[11],t[15]=e[15];return t},i.SIMD.transpose=function(t,e){var n,r,i,a,o,s,l,u,c,f;return n=SIMD.Float32x4.load(e,0),r=SIMD.Float32x4.load(e,4),i=SIMD.Float32x4.load(e,8),a=SIMD.Float32x4.load(e,12),o=SIMD.Float32x4.shuffle(n,r,0,1,4,5),s=SIMD.Float32x4.shuffle(i,a,0,1,4,5),l=SIMD.Float32x4.shuffle(o,s,0,2,4,6),u=SIMD.Float32x4.shuffle(o,s,1,3,5,7),SIMD.Float32x4.store(t,0,l),SIMD.Float32x4.store(t,4,u),o=SIMD.Float32x4.shuffle(n,r,2,3,6,7),s=SIMD.Float32x4.shuffle(i,a,2,3,6,7),c=SIMD.Float32x4.shuffle(o,s,0,2,4,6),f=SIMD.Float32x4.shuffle(o,s,1,3,5,7),SIMD.Float32x4.store(t,8,c),SIMD.Float32x4.store(t,12,f),t},i.transpose=r.USE_SIMD?i.SIMD.transpose:i.scalar.transpose,i.scalar.invert=function(t,e){var n=e[0],r=e[1],i=e[2],a=e[3],o=e[4],s=e[5],l=e[6],u=e[7],c=e[8],f=e[9],h=e[10],d=e[11],p=e[12],m=e[13],g=e[14],v=e[15],y=n*s-r*o,x=n*l-i*o,_=n*u-a*o,b=r*l-i*s,w=r*u-a*s,M=i*u-a*l,k=c*m-f*p,S=c*g-h*p,T=c*v-d*p,A=f*g-h*m,E=f*v-d*m,L=h*v-d*g,z=y*L-x*E+_*A+b*T-w*S+M*k;return z?(z=1/z,t[0]=(s*L-l*E+u*A)*z,t[1]=(i*E-r*L-a*A)*z,t[2]=(m*M-g*w+v*b)*z,t[3]=(h*w-f*M-d*b)*z,t[4]=(l*T-o*L-u*S)*z,t[5]=(n*L-i*T+a*S)*z,t[6]=(g*_-p*M-v*x)*z,t[7]=(c*M-h*_+d*x)*z,t[8]=(o*E-s*T+u*k)*z,t[9]=(r*T-n*E-a*k)*z,t[10]=(p*w-m*_+v*y)*z,t[11]=(f*_-c*w-d*y)*z,t[12]=(s*S-o*A-l*k)*z,t[13]=(n*A-r*S+i*k)*z,t[14]=(m*x-p*b-g*y)*z,t[15]=(c*b-f*x+h*y)*z,t):null},i.SIMD.invert=function(t,e){var n,r,i,a,o,s,l,u,c,f,h=SIMD.Float32x4.load(e,0),d=SIMD.Float32x4.load(e,4),p=SIMD.Float32x4.load(e,8),m=SIMD.Float32x4.load(e,12);return o=SIMD.Float32x4.shuffle(h,d,0,1,4,5),r=SIMD.Float32x4.shuffle(p,m,0,1,4,5),n=SIMD.Float32x4.shuffle(o,r,0,2,4,6),r=SIMD.Float32x4.shuffle(r,o,1,3,5,7),o=SIMD.Float32x4.shuffle(h,d,2,3,6,7),a=SIMD.Float32x4.shuffle(p,m,2,3,6,7),i=SIMD.Float32x4.shuffle(o,a,0,2,4,6),a=SIMD.Float32x4.shuffle(a,o,1,3,5,7),o=SIMD.Float32x4.mul(i,a),o=SIMD.Float32x4.swizzle(o,1,0,3,2),s=SIMD.Float32x4.mul(r,o),l=SIMD.Float32x4.mul(n,o),o=SIMD.Float32x4.swizzle(o,2,3,0,1),s=SIMD.Float32x4.sub(SIMD.Float32x4.mul(r,o),s),l=SIMD.Float32x4.sub(SIMD.Float32x4.mul(n,o),l),l=SIMD.Float32x4.swizzle(l,2,3,0,1),o=SIMD.Float32x4.mul(r,i),o=SIMD.Float32x4.swizzle(o,1,0,3,2),s=SIMD.Float32x4.add(SIMD.Float32x4.mul(a,o),s),c=SIMD.Float32x4.mul(n,o),o=SIMD.Float32x4.swizzle(o,2,3,0,1),s=SIMD.Float32x4.sub(s,SIMD.Float32x4.mul(a,o)),c=SIMD.Float32x4.sub(SIMD.Float32x4.mul(n,o),c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),o=SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(r,2,3,0,1),a),o=SIMD.Float32x4.swizzle(o,1,0,3,2),i=SIMD.Float32x4.swizzle(i,2,3,0,1),s=SIMD.Float32x4.add(SIMD.Float32x4.mul(i,o),s),u=SIMD.Float32x4.mul(n,o),o=SIMD.Float32x4.swizzle(o,2,3,0,1),s=SIMD.Float32x4.sub(s,SIMD.Float32x4.mul(i,o)),u=SIMD.Float32x4.sub(SIMD.Float32x4.mul(n,o),u),u=SIMD.Float32x4.swizzle(u,2,3,0,1),o=SIMD.Float32x4.mul(n,r),o=SIMD.Float32x4.swizzle(o,1,0,3,2),u=SIMD.Float32x4.add(SIMD.Float32x4.mul(a,o),u),c=SIMD.Float32x4.sub(SIMD.Float32x4.mul(i,o),c),o=SIMD.Float32x4.swizzle(o,2,3,0,1),u=SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,o),u),c=SIMD.Float32x4.sub(c,SIMD.Float32x4.mul(i,o)),o=SIMD.Float32x4.mul(n,a),o=SIMD.Float32x4.swizzle(o,1,0,3,2),l=SIMD.Float32x4.sub(l,SIMD.Float32x4.mul(i,o)),u=SIMD.Float32x4.add(SIMD.Float32x4.mul(r,o),u),o=SIMD.Float32x4.swizzle(o,2,3,0,1),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(i,o),l),u=SIMD.Float32x4.sub(u,SIMD.Float32x4.mul(r,o)),o=SIMD.Float32x4.mul(n,i),o=SIMD.Float32x4.swizzle(o,1,0,3,2),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(a,o),l),c=SIMD.Float32x4.sub(c,SIMD.Float32x4.mul(r,o)),o=SIMD.Float32x4.swizzle(o,2,3,0,1),l=SIMD.Float32x4.sub(l,SIMD.Float32x4.mul(a,o)),c=SIMD.Float32x4.add(SIMD.Float32x4.mul(r,o),c),f=SIMD.Float32x4.mul(n,s),f=SIMD.Float32x4.add(SIMD.Float32x4.swizzle(f,2,3,0,1),f),f=SIMD.Float32x4.add(SIMD.Float32x4.swizzle(f,1,0,3,2),f),o=SIMD.Float32x4.reciprocalApproximation(f),f=SIMD.Float32x4.sub(SIMD.Float32x4.add(o,o),SIMD.Float32x4.mul(f,SIMD.Float32x4.mul(o,o))),(f=SIMD.Float32x4.swizzle(f,0,0,0,0))?(SIMD.Float32x4.store(t,0,SIMD.Float32x4.mul(f,s)),SIMD.Float32x4.store(t,4,SIMD.Float32x4.mul(f,l)),SIMD.Float32x4.store(t,8,SIMD.Float32x4.mul(f,u)),SIMD.Float32x4.store(t,12,SIMD.Float32x4.mul(f,c)),t):null},i.invert=r.USE_SIMD?i.SIMD.invert:i.scalar.invert,i.scalar.adjoint=function(t,e){var n=e[0],r=e[1],i=e[2],a=e[3],o=e[4],s=e[5],l=e[6],u=e[7],c=e[8],f=e[9],h=e[10],d=e[11],p=e[12],m=e[13],g=e[14],v=e[15];return t[0]=s*(h*v-d*g)-f*(l*v-u*g)+m*(l*d-u*h),t[1]=-(r*(h*v-d*g)-f*(i*v-a*g)+m*(i*d-a*h)),t[2]=r*(l*v-u*g)-s*(i*v-a*g)+m*(i*u-a*l),t[3]=-(r*(l*d-u*h)-s*(i*d-a*h)+f*(i*u-a*l)),t[4]=-(o*(h*v-d*g)-c*(l*v-u*g)+p*(l*d-u*h)),t[5]=n*(h*v-d*g)-c*(i*v-a*g)+p*(i*d-a*h),t[6]=-(n*(l*v-u*g)-o*(i*v-a*g)+p*(i*u-a*l)),t[7]=n*(l*d-u*h)-o*(i*d-a*h)+c*(i*u-a*l),t[8]=o*(f*v-d*m)-c*(s*v-u*m)+p*(s*d-u*f),t[9]=-(n*(f*v-d*m)-c*(r*v-a*m)+p*(r*d-a*f)),t[10]=n*(s*v-u*m)-o*(r*v-a*m)+p*(r*u-a*s),t[11]=-(n*(s*d-u*f)-o*(r*d-a*f)+c*(r*u-a*s)),t[12]=-(o*(f*g-h*m)-c*(s*g-l*m)+p*(s*h-l*f)),t[13]=n*(f*g-h*m)-c*(r*g-i*m)+p*(r*h-i*f),t[14]=-(n*(s*g-l*m)-o*(r*g-i*m)+p*(r*l-i*s)),t[15]=n*(s*h-l*f)-o*(r*h-i*f)+c*(r*l-i*s),t},i.SIMD.adjoint=function(t,e){var n,r,i,a,o,s,l,u,c,f,h,d,p,n=SIMD.Float32x4.load(e,0),r=SIMD.Float32x4.load(e,4),i=SIMD.Float32x4.load(e,8),a=SIMD.Float32x4.load(e,12);return c=SIMD.Float32x4.shuffle(n,r,0,1,4,5),s=SIMD.Float32x4.shuffle(i,a,0,1,4,5),o=SIMD.Float32x4.shuffle(c,s,0,2,4,6),s=SIMD.Float32x4.shuffle(s,c,1,3,5,7),c=SIMD.Float32x4.shuffle(n,r,2,3,6,7),u=SIMD.Float32x4.shuffle(i,a,2,3,6,7),l=SIMD.Float32x4.shuffle(c,u,0,2,4,6),u=SIMD.Float32x4.shuffle(u,c,1,3,5,7),c=SIMD.Float32x4.mul(l,u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),f=SIMD.Float32x4.mul(s,c),h=SIMD.Float32x4.mul(o,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),f=SIMD.Float32x4.sub(SIMD.Float32x4.mul(s,c),f),h=SIMD.Float32x4.sub(SIMD.Float32x4.mul(o,c),h),h=SIMD.Float32x4.swizzle(h,2,3,0,1),c=SIMD.Float32x4.mul(s,l),c=SIMD.Float32x4.swizzle(c,1,0,3,2),f=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),f),p=SIMD.Float32x4.mul(o,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),f=SIMD.Float32x4.sub(f,SIMD.Float32x4.mul(u,c)),p=SIMD.Float32x4.sub(SIMD.Float32x4.mul(o,c),p),p=SIMD.Float32x4.swizzle(p,2,3,0,1),c=SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,2,3,0,1),u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),l=SIMD.Float32x4.swizzle(l,2,3,0,1),f=SIMD.Float32x4.add(SIMD.Float32x4.mul(l,c),f),d=SIMD.Float32x4.mul(o,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),f=SIMD.Float32x4.sub(f,SIMD.Float32x4.mul(l,c)),d=SIMD.Float32x4.sub(SIMD.Float32x4.mul(o,c),d),d=SIMD.Float32x4.swizzle(d,2,3,0,1),c=SIMD.Float32x4.mul(o,s),c=SIMD.Float32x4.swizzle(c,1,0,3,2),d=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),d),p=SIMD.Float32x4.sub(SIMD.Float32x4.mul(l,c),p),c=SIMD.Float32x4.swizzle(c,2,3,0,1),d=SIMD.Float32x4.sub(SIMD.Float32x4.mul(u,c),d),p=SIMD.Float32x4.sub(p,SIMD.Float32x4.mul(l,c)),c=SIMD.Float32x4.mul(o,u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),h=SIMD.Float32x4.sub(h,SIMD.Float32x4.mul(l,c)),d=SIMD.Float32x4.add(SIMD.Float32x4.mul(s,c),d),c=SIMD.Float32x4.swizzle(c,2,3,0,1),h=SIMD.Float32x4.add(SIMD.Float32x4.mul(l,c),h),d=SIMD.Float32x4.sub(d,SIMD.Float32x4.mul(s,c)),c=SIMD.Float32x4.mul(o,l),c=SIMD.Float32x4.swizzle(c,1,0,3,2),h=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),h),p=SIMD.Float32x4.sub(p,SIMD.Float32x4.mul(s,c)),c=SIMD.Float32x4.swizzle(c,2,3,0,1),h=SIMD.Float32x4.sub(h,SIMD.Float32x4.mul(u,c)),p=SIMD.Float32x4.add(SIMD.Float32x4.mul(s,c),p),SIMD.Float32x4.store(t,0,f),SIMD.Float32x4.store(t,4,h),SIMD.Float32x4.store(t,8,d),SIMD.Float32x4.store(t,12,p),t},i.adjoint=r.USE_SIMD?i.SIMD.adjoint:i.scalar.adjoint,i.determinant=function(t){var e=t[0],n=t[1],r=t[2],i=t[3],a=t[4],o=t[5],s=t[6],l=t[7],u=t[8],c=t[9],f=t[10],h=t[11],d=t[12],p=t[13],m=t[14],g=t[15],v=e*o-n*a,y=e*s-r*a,x=e*l-i*a,_=n*s-r*o,b=n*l-i*o,w=r*l-i*s,M=u*p-c*d,k=u*m-f*d,S=u*g-h*d,T=c*m-f*p,A=c*g-h*p,E=f*g-h*m;return v*E-y*A+x*T+_*S-b*k+w*M},i.SIMD.multiply=function(t,e,n){var r=SIMD.Float32x4.load(e,0),i=SIMD.Float32x4.load(e,4),a=SIMD.Float32x4.load(e,8),o=SIMD.Float32x4.load(e,12),s=SIMD.Float32x4.load(n,0),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,0,0,0,0),r),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,2,2,2,2),a),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,3,3,3,3),o))));SIMD.Float32x4.store(t,0,l);var u=SIMD.Float32x4.load(n,4),c=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,0,0,0,0),r),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,2,2,2,2),a),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,3,3,3,3),o))));SIMD.Float32x4.store(t,4,c);var f=SIMD.Float32x4.load(n,8),h=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(f,0,0,0,0),r),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(f,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(f,2,2,2,2),a),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(f,3,3,3,3),o))));SIMD.Float32x4.store(t,8,h);var d=SIMD.Float32x4.load(n,12),p=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,0,0,0,0),r),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,2,2,2,2),a),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,3,3,3,3),o))));return SIMD.Float32x4.store(t,12,p),t},i.scalar.multiply=function(t,e,n){var r=e[0],i=e[1],a=e[2],o=e[3],s=e[4],l=e[5],u=e[6],c=e[7],f=e[8],h=e[9],d=e[10],p=e[11],m=e[12],g=e[13],v=e[14],y=e[15],x=n[0],_=n[1],b=n[2],w=n[3];return t[0]=x*r+_*s+b*f+w*m,t[1]=x*i+_*l+b*h+w*g,t[2]=x*a+_*u+b*d+w*v,t[3]=x*o+_*c+b*p+w*y,x=n[4],_=n[5],b=n[6],w=n[7],t[4]=x*r+_*s+b*f+w*m,t[5]=x*i+_*l+b*h+w*g,t[6]=x*a+_*u+b*d+w*v,t[7]=x*o+_*c+b*p+w*y,x=n[8],_=n[9],b=n[10],w=n[11],t[8]=x*r+_*s+b*f+w*m,t[9]=x*i+_*l+b*h+w*g,t[10]=x*a+_*u+b*d+w*v,t[11]=x*o+_*c+b*p+w*y,x=n[12],_=n[13],b=n[14],w=n[15],t[12]=x*r+_*s+b*f+w*m,t[13]=x*i+_*l+b*h+w*g,t[14]=x*a+_*u+b*d+w*v,t[15]=x*o+_*c+b*p+w*y,t},i.multiply=r.USE_SIMD?i.SIMD.multiply:i.scalar.multiply,i.mul=i.multiply,i.scalar.translate=function(t,e,n){var r,i,a,o,s,l,u,c,f,h,d,p,m=n[0],g=n[1],v=n[2];return e===t?(t[12]=e[0]*m+e[4]*g+e[8]*v+e[12],t[13]=e[1]*m+e[5]*g+e[9]*v+e[13],t[14]=e[2]*m+e[6]*g+e[10]*v+e[14],t[15]=e[3]*m+e[7]*g+e[11]*v+e[15]):(r=e[0],i=e[1],a=e[2],o=e[3],s=e[4],l=e[5],u=e[6],c=e[7],f=e[8],h=e[9],d=e[10],p=e[11],t[0]=r,t[1]=i,t[2]=a,t[3]=o,t[4]=s,t[5]=l,t[6]=u,t[7]=c,t[8]=f,t[9]=h,t[10]=d,t[11]=p,t[12]=r*m+s*g+f*v+e[12],t[13]=i*m+l*g+h*v+e[13],t[14]=a*m+u*g+d*v+e[14],t[15]=o*m+c*g+p*v+e[15]),t},i.SIMD.translate=function(t,e,n){var r=SIMD.Float32x4.load(e,0),i=SIMD.Float32x4.load(e,4),a=SIMD.Float32x4.load(e,8),o=SIMD.Float32x4.load(e,12),s=SIMD.Float32x4(n[0],n[1],n[2],0);e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11]),r=SIMD.Float32x4.mul(r,SIMD.Float32x4.swizzle(s,0,0,0,0)),i=SIMD.Float32x4.mul(i,SIMD.Float32x4.swizzle(s,1,1,1,1)),a=SIMD.Float32x4.mul(a,SIMD.Float32x4.swizzle(s,2,2,2,2));var l=SIMD.Float32x4.add(r,SIMD.Float32x4.add(i,SIMD.Float32x4.add(a,o)));return SIMD.Float32x4.store(t,12,l),t},i.translate=r.USE_SIMD?i.SIMD.translate:i.scalar.translate,i.scalar.scale=function(t,e,n){var r=n[0],i=n[1],a=n[2];return t[0]=e[0]*r,t[1]=e[1]*r,t[2]=e[2]*r,t[3]=e[3]*r,t[4]=e[4]*i,t[5]=e[5]*i,t[6]=e[6]*i,t[7]=e[7]*i,t[8]=e[8]*a,t[9]=e[9]*a,t[10]=e[10]*a,t[11]=e[11]*a,t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.SIMD.scale=function(t,e,n){var r,i,a,o=SIMD.Float32x4(n[0],n[1],n[2],0);return r=SIMD.Float32x4.load(e,0),SIMD.Float32x4.store(t,0,SIMD.Float32x4.mul(r,SIMD.Float32x4.swizzle(o,0,0,0,0))),i=SIMD.Float32x4.load(e,4),SIMD.Float32x4.store(t,4,SIMD.Float32x4.mul(i,SIMD.Float32x4.swizzle(o,1,1,1,1))),a=SIMD.Float32x4.load(e,8),SIMD.Float32x4.store(t,8,SIMD.Float32x4.mul(a,SIMD.Float32x4.swizzle(o,2,2,2,2))),t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.scale=r.USE_SIMD?i.SIMD.scale:i.scalar.scale,i.rotate=function(t,e,n,i){var a,o,s,l,u,c,f,h,d,p,m,g,v,y,x,_,b,w,M,k,S,T,A,E,L=i[0],z=i[1],I=i[2],D=Math.sqrt(L*L+z*z+I*I);return Math.abs(D)<r.EPSILON?null:(D=1/D,L*=D,z*=D,I*=D,a=Math.sin(n),o=Math.cos(n),s=1-o,l=e[0],u=e[1],c=e[2],f=e[3],h=e[4],d=e[5],p=e[6],m=e[7],g=e[8],v=e[9],y=e[10],x=e[11],_=L*L*s+o,b=z*L*s+I*a,w=I*L*s-z*a,M=L*z*s-I*a,k=z*z*s+o,S=I*z*s+L*a,T=L*I*s+z*a,A=z*I*s-L*a,E=I*I*s+o,t[0]=l*_+h*b+g*w,t[1]=u*_+d*b+v*w,t[2]=c*_+p*b+y*w,t[3]=f*_+m*b+x*w,t[4]=l*M+h*k+g*S,t[5]=u*M+d*k+v*S,t[6]=c*M+p*k+y*S,t[7]=f*M+m*k+x*S,t[8]=l*T+h*A+g*E,t[9]=u*T+d*A+v*E,t[10]=c*T+p*A+y*E,t[11]=f*T+m*A+x*E,e!==t&&(t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t)},i.scalar.rotateX=function(t,e,n){var r=Math.sin(n),i=Math.cos(n),a=e[4],o=e[5],s=e[6],l=e[7],u=e[8],c=e[9],f=e[10],h=e[11];return e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[4]=a*i+u*r,t[5]=o*i+c*r,t[6]=s*i+f*r,t[7]=l*i+h*r,t[8]=u*i-a*r,t[9]=c*i-o*r,t[10]=f*i-s*r,t[11]=h*i-l*r,t},i.SIMD.rotateX=function(t,e,n){var r=SIMD.Float32x4.splat(Math.sin(n)),i=SIMD.Float32x4.splat(Math.cos(n));e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var a=SIMD.Float32x4.load(e,4),o=SIMD.Float32x4.load(e,8);return SIMD.Float32x4.store(t,4,SIMD.Float32x4.add(SIMD.Float32x4.mul(a,i),SIMD.Float32x4.mul(o,r))),SIMD.Float32x4.store(t,8,SIMD.Float32x4.sub(SIMD.Float32x4.mul(o,i),SIMD.Float32x4.mul(a,r))),t},i.rotateX=r.USE_SIMD?i.SIMD.rotateX:i.scalar.rotateX,i.scalar.rotateY=function(t,e,n){var r=Math.sin(n),i=Math.cos(n),a=e[0],o=e[1],s=e[2],l=e[3],u=e[8],c=e[9],f=e[10],h=e[11];return e!==t&&(t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=a*i-u*r,t[1]=o*i-c*r,t[2]=s*i-f*r,t[3]=l*i-h*r,t[8]=a*r+u*i,t[9]=o*r+c*i,t[10]=s*r+f*i,t[11]=l*r+h*i,t},i.SIMD.rotateY=function(t,e,n){var r=SIMD.Float32x4.splat(Math.sin(n)),i=SIMD.Float32x4.splat(Math.cos(n));e!==t&&(t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var a=SIMD.Float32x4.load(e,0),o=SIMD.Float32x4.load(e,8);return SIMD.Float32x4.store(t,0,SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,i),SIMD.Float32x4.mul(o,r))),SIMD.Float32x4.store(t,8,SIMD.Float32x4.add(SIMD.Float32x4.mul(a,r),SIMD.Float32x4.mul(o,i))),t},i.rotateY=r.USE_SIMD?i.SIMD.rotateY:i.scalar.rotateY,i.scalar.rotateZ=function(t,e,n){var r=Math.sin(n),i=Math.cos(n),a=e[0],o=e[1],s=e[2],l=e[3],u=e[4],c=e[5],f=e[6],h=e[7];return e!==t&&(t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=a*i+u*r,t[1]=o*i+c*r,t[2]=s*i+f*r,t[3]=l*i+h*r,t[4]=u*i-a*r,t[5]=c*i-o*r,t[6]=f*i-s*r,t[7]=h*i-l*r,t},i.SIMD.rotateZ=function(t,e,n){var r=SIMD.Float32x4.splat(Math.sin(n)),i=SIMD.Float32x4.splat(Math.cos(n));e!==t&&(t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var a=SIMD.Float32x4.load(e,0),o=SIMD.Float32x4.load(e,4);return SIMD.Float32x4.store(t,0,SIMD.Float32x4.add(SIMD.Float32x4.mul(a,i),SIMD.Float32x4.mul(o,r))),SIMD.Float32x4.store(t,4,SIMD.Float32x4.sub(SIMD.Float32x4.mul(o,i),SIMD.Float32x4.mul(a,r))),t},i.rotateZ=r.USE_SIMD?i.SIMD.rotateZ:i.scalar.rotateZ,i.fromTranslation=function(t,e){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=e[0],t[13]=e[1],t[14]=e[2],t[15]=1,t},i.fromScaling=function(t,e){return t[0]=e[0],t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=e[1],t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=e[2],t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromRotation=function(t,e,n){var i,a,o,s=n[0],l=n[1],u=n[2],c=Math.sqrt(s*s+l*l+u*u);return Math.abs(c)<r.EPSILON?null:(c=1/c,s*=c,l*=c,u*=c,i=Math.sin(e),a=Math.cos(e),o=1-a,t[0]=s*s*o+a,t[1]=l*s*o+u*i,t[2]=u*s*o-l*i,t[3]=0,t[4]=s*l*o-u*i,t[5]=l*l*o+a,t[6]=u*l*o+s*i,t[7]=0,t[8]=s*u*o+l*i,t[9]=l*u*o-s*i,t[10]=u*u*o+a,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t)},i.fromXRotation=function(t,e){var n=Math.sin(e),r=Math.cos(e);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=r,t[6]=n,t[7]=0,t[8]=0,t[9]=-n,t[10]=r,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromYRotation=function(t,e){var n=Math.sin(e),r=Math.cos(e);return t[0]=r,t[1]=0,t[2]=-n,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=n,t[9]=0,t[10]=r,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromZRotation=function(t,e){var n=Math.sin(e),r=Math.cos(e);return t[0]=r,t[1]=n,t[2]=0,t[3]=0,t[4]=-n,t[5]=r,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromRotationTranslation=function(t,e,n){var r=e[0],i=e[1],a=e[2],o=e[3],s=r+r,l=i+i,u=a+a,c=r*s,f=r*l,h=r*u,d=i*l,p=i*u,m=a*u,g=o*s,v=o*l,y=o*u;return t[0]=1-(d+m),t[1]=f+y,t[2]=h-v,t[3]=0,t[4]=f-y,t[5]=1-(c+m),t[6]=p+g,t[7]=0,t[8]=h+v,t[9]=p-g,t[10]=1-(c+d),t[11]=0,t[12]=n[0],t[13]=n[1],t[14]=n[2],t[15]=1,t},i.getTranslation=function(t,e){return t[0]=e[12],t[1]=e[13],t[2]=e[14],t},i.getRotation=function(t,e){
+-var n=e[0]+e[5]+e[10],r=0;return n>0?(r=2*Math.sqrt(n+1),t[3]=.25*r,t[0]=(e[6]-e[9])/r,t[1]=(e[8]-e[2])/r,t[2]=(e[1]-e[4])/r):e[0]>e[5]&e[0]>e[10]?(r=2*Math.sqrt(1+e[0]-e[5]-e[10]),t[3]=(e[6]-e[9])/r,t[0]=.25*r,t[1]=(e[1]+e[4])/r,t[2]=(e[8]+e[2])/r):e[5]>e[10]?(r=2*Math.sqrt(1+e[5]-e[0]-e[10]),t[3]=(e[8]-e[2])/r,t[0]=(e[1]+e[4])/r,t[1]=.25*r,t[2]=(e[6]+e[9])/r):(r=2*Math.sqrt(1+e[10]-e[0]-e[5]),t[3]=(e[1]-e[4])/r,t[0]=(e[8]+e[2])/r,t[1]=(e[6]+e[9])/r,t[2]=.25*r),t},i.fromRotationTranslationScale=function(t,e,n,r){var i=e[0],a=e[1],o=e[2],s=e[3],l=i+i,u=a+a,c=o+o,f=i*l,h=i*u,d=i*c,p=a*u,m=a*c,g=o*c,v=s*l,y=s*u,x=s*c,_=r[0],b=r[1],w=r[2];return t[0]=(1-(p+g))*_,t[1]=(h+x)*_,t[2]=(d-y)*_,t[3]=0,t[4]=(h-x)*b,t[5]=(1-(f+g))*b,t[6]=(m+v)*b,t[7]=0,t[8]=(d+y)*w,t[9]=(m-v)*w,t[10]=(1-(f+p))*w,t[11]=0,t[12]=n[0],t[13]=n[1],t[14]=n[2],t[15]=1,t},i.fromRotationTranslationScaleOrigin=function(t,e,n,r,i){var a=e[0],o=e[1],s=e[2],l=e[3],u=a+a,c=o+o,f=s+s,h=a*u,d=a*c,p=a*f,m=o*c,g=o*f,v=s*f,y=l*u,x=l*c,_=l*f,b=r[0],w=r[1],M=r[2],k=i[0],S=i[1],T=i[2];return t[0]=(1-(m+v))*b,t[1]=(d+_)*b,t[2]=(p-x)*b,t[3]=0,t[4]=(d-_)*w,t[5]=(1-(h+v))*w,t[6]=(g+y)*w,t[7]=0,t[8]=(p+x)*M,t[9]=(g-y)*M,t[10]=(1-(h+m))*M,t[11]=0,t[12]=n[0]+k-(t[0]*k+t[4]*S+t[8]*T),t[13]=n[1]+S-(t[1]*k+t[5]*S+t[9]*T),t[14]=n[2]+T-(t[2]*k+t[6]*S+t[10]*T),t[15]=1,t},i.fromQuat=function(t,e){var n=e[0],r=e[1],i=e[2],a=e[3],o=n+n,s=r+r,l=i+i,u=n*o,c=r*o,f=r*s,h=i*o,d=i*s,p=i*l,m=a*o,g=a*s,v=a*l;return t[0]=1-f-p,t[1]=c+v,t[2]=h-g,t[3]=0,t[4]=c-v,t[5]=1-u-p,t[6]=d+m,t[7]=0,t[8]=h+g,t[9]=d-m,t[10]=1-u-f,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.frustum=function(t,e,n,r,i,a,o){var s=1/(n-e),l=1/(i-r),u=1/(a-o);return t[0]=2*a*s,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=2*a*l,t[6]=0,t[7]=0,t[8]=(n+e)*s,t[9]=(i+r)*l,t[10]=(o+a)*u,t[11]=-1,t[12]=0,t[13]=0,t[14]=o*a*2*u,t[15]=0,t},i.perspective=function(t,e,n,r,i){var a=1/Math.tan(e/2),o=1/(r-i);return t[0]=a/n,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=a,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=(i+r)*o,t[11]=-1,t[12]=0,t[13]=0,t[14]=2*i*r*o,t[15]=0,t},i.perspectiveFromFieldOfView=function(t,e,n,r){var i=Math.tan(e.upDegrees*Math.PI/180),a=Math.tan(e.downDegrees*Math.PI/180),o=Math.tan(e.leftDegrees*Math.PI/180),s=Math.tan(e.rightDegrees*Math.PI/180),l=2/(o+s),u=2/(i+a);return t[0]=l,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=u,t[6]=0,t[7]=0,t[8]=-((o-s)*l*.5),t[9]=(i-a)*u*.5,t[10]=r/(n-r),t[11]=-1,t[12]=0,t[13]=0,t[14]=r*n/(n-r),t[15]=0,t},i.ortho=function(t,e,n,r,i,a,o){var s=1/(e-n),l=1/(r-i),u=1/(a-o);return t[0]=-2*s,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=-2*l,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=2*u,t[11]=0,t[12]=(e+n)*s,t[13]=(i+r)*l,t[14]=(o+a)*u,t[15]=1,t},i.lookAt=function(t,e,n,a){var o,s,l,u,c,f,h,d,p,m,g=e[0],v=e[1],y=e[2],x=a[0],_=a[1],b=a[2],w=n[0],M=n[1],k=n[2];return Math.abs(g-w)<r.EPSILON&&Math.abs(v-M)<r.EPSILON&&Math.abs(y-k)<r.EPSILON?i.identity(t):(h=g-w,d=v-M,p=y-k,m=1/Math.sqrt(h*h+d*d+p*p),h*=m,d*=m,p*=m,o=_*p-b*d,s=b*h-x*p,l=x*d-_*h,m=Math.sqrt(o*o+s*s+l*l),m?(m=1/m,o*=m,s*=m,l*=m):(o=0,s=0,l=0),u=d*l-p*s,c=p*o-h*l,f=h*s-d*o,m=Math.sqrt(u*u+c*c+f*f),m?(m=1/m,u*=m,c*=m,f*=m):(u=0,c=0,f=0),t[0]=o,t[1]=u,t[2]=h,t[3]=0,t[4]=s,t[5]=c,t[6]=d,t[7]=0,t[8]=l,t[9]=f,t[10]=p,t[11]=0,t[12]=-(o*g+s*v+l*y),t[13]=-(u*g+c*v+f*y),t[14]=-(h*g+d*v+p*y),t[15]=1,t)},i.str=function(t){return"mat4("+t[0]+", "+t[1]+", "+t[2]+", "+t[3]+", "+t[4]+", "+t[5]+", "+t[6]+", "+t[7]+", "+t[8]+", "+t[9]+", "+t[10]+", "+t[11]+", "+t[12]+", "+t[13]+", "+t[14]+", "+t[15]+")"},i.frob=function(t){return Math.sqrt(Math.pow(t[0],2)+Math.pow(t[1],2)+Math.pow(t[2],2)+Math.pow(t[3],2)+Math.pow(t[4],2)+Math.pow(t[5],2)+Math.pow(t[6],2)+Math.pow(t[7],2)+Math.pow(t[8],2)+Math.pow(t[9],2)+Math.pow(t[10],2)+Math.pow(t[11],2)+Math.pow(t[12],2)+Math.pow(t[13],2)+Math.pow(t[14],2)+Math.pow(t[15],2))},i.add=function(t,e,n){return t[0]=e[0]+n[0],t[1]=e[1]+n[1],t[2]=e[2]+n[2],t[3]=e[3]+n[3],t[4]=e[4]+n[4],t[5]=e[5]+n[5],t[6]=e[6]+n[6],t[7]=e[7]+n[7],t[8]=e[8]+n[8],t[9]=e[9]+n[9],t[10]=e[10]+n[10],t[11]=e[11]+n[11],t[12]=e[12]+n[12],t[13]=e[13]+n[13],t[14]=e[14]+n[14],t[15]=e[15]+n[15],t},i.subtract=function(t,e,n){return t[0]=e[0]-n[0],t[1]=e[1]-n[1],t[2]=e[2]-n[2],t[3]=e[3]-n[3],t[4]=e[4]-n[4],t[5]=e[5]-n[5],t[6]=e[6]-n[6],t[7]=e[7]-n[7],t[8]=e[8]-n[8],t[9]=e[9]-n[9],t[10]=e[10]-n[10],t[11]=e[11]-n[11],t[12]=e[12]-n[12],t[13]=e[13]-n[13],t[14]=e[14]-n[14],t[15]=e[15]-n[15],t},i.sub=i.subtract,i.multiplyScalar=function(t,e,n){return 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Must be 8.",example:8},name:{type:"string",doc:"A human-readable name for the style.",example:"Bright"},metadata:{type:"*",doc:"Arbitrary properties useful to track with the stylesheet, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."},center:{type:"array",value:"number",doc:"Default map center in longitude and latitude.  The style center will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:[-73.9749,40.7736]},zoom:{type:"number",doc:"Default zoom level.  The style zoom will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:12.5},bearing:{type:"number","default":0,period:360,units:"degrees",doc:"Default bearing, in degrees.  The style bearing will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:29},pitch:{type:"number","default":0,units:"degrees",doc:"Default pitch, in degrees. Zero is perpendicular to the surface.  The style pitch will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:50},sources:{required:!0,type:"sources",doc:"Data source specifications.",example:{"mapbox-streets":{type:"vector",url:"mapbox://mapbox.mapbox-streets-v6"}}},sprite:{type:"string",doc:"A base URL for retrieving the sprite image and metadata. The extensions `.png`, `.json` and scale factor `@2x.png` will be automatically appended. This property is required if any layer uses the 'sprite-image' layout property.",example:"mapbox://sprites/mapbox/bright-v8"},glyphs:{type:"string",doc:"A URL template for loading signed-distance-field glyph sets in PBF format. The URL must include `{fontstack}` and `{range}` tokens. This property is required if any layer uses the 'text-field' layout property.",example:"mapbox://fonts/mapbox/{fontstack}/{range}.pbf"},transition:{type:"transition",doc:"A global transition definition to use as a default across properties.",example:{duration:300,delay:0}},layers:{required:!0,type:"array",value:"layer",doc:"Layers will be drawn in the order of this array.",example:[{id:"water",source:"mapbox-streets","source-layer":"water",type:"fill",paint:{"fill-color":"#00ffff"}}]}},sources:{"*":{type:"source",doc:"Specification of a data source. For vector and raster sources, either TileJSON or a URL to a TileJSON must be provided. For GeoJSON and video sources, a URL must be provided."}},source:["source_tile","source_geojson","source_video","source_image"],source_tile:{type:{required:!0,type:"enum",values:["vector","raster"],doc:"The data type of the tile source."},url:{type:"string",doc:"A URL to a TileJSON resource. Supported protocols are `http:`, `https:`, and `mapbox://<mapid>`."},tiles:{type:"array",value:"string",doc:"An array of one or more tile source URLs, as in the TileJSON spec."},minzoom:{type:"number","default":0,doc:"Minimum zoom level for which tiles are available, as in the TileJSON spec."},maxzoom:{type:"number","default":22,doc:"Maximum zoom level for which tiles are available, as in the TileJSON spec. Data from tiles at the maxzoom are used when displaying the map at higher zoom levels."},tileSize:{type:"number","default":512,units:"pixels",doc:"The minimum visual size to display tiles for this layer. Only configurable for raster layers."},"*":{type:"*",doc:"Other keys to configure the data source."}},source_geojson:{type:{required:!0,type:"enum",values:["geojson"],doc:"The data type of the GeoJSON source."},data:{type:"*",doc:"A URL to a GeoJSON file, or inline GeoJSON."},maxzoom:{type:"number","default":14,doc:"Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels)."},buffer:{type:"number","default":64,doc:"Tile buffer size on each side (higher means fewer rendering artifacts near tile edges but slower performance)."},tolerance:{type:"number","default":3,doc:"Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance)."},cluster:{type:"boolean","default":!1,doc:"If the data is a collection of point features, setting this to true clusters the points by radius into groups."},clusterRadius:{type:"number","default":400,doc:"Radius of each cluster when clustering points, relative to 4096 tile."},clusterMaxZoom:{type:"number",doc:"Max zoom to cluster points on. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered)."}},source_video:{type:{required:!0,type:"enum",values:["video"],doc:"The data type of the video source."},urls:{required:!0,type:"array",value:"string",doc:"URLs to video content in order of preferred format."},coordinates:{required:!0,doc:"Corners of video specified in longitude, latitude pairs.",type:"array",length:4,value:{type:"array",length:2,value:"number",doc:"A single longitude, latitude pair."}}},source_image:{type:{required:!0,type:"enum",values:["image"],doc:"The data type of the image source."},url:{required:!0,type:"string",doc:"URL that points to an image"},coordinates:{required:!0,doc:"Corners of image specified in longitude, latitude pairs.",type:"array",length:4,value:{type:"array",length:2,value:"number",doc:"A single longitude, latitude pair."}}},layer:{id:{type:"string",doc:"Unique layer name.",required:!0},type:{type:"enum",values:["fill","line","symbol","circle","raster","background"],doc:"Rendering type of this layer."},metadata:{type:"*",doc:"Arbitrary properties useful to track with the layer, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."},ref:{type:"string",doc:"References another layer to copy `type`, `source`, `source-layer`, `minzoom`, `maxzoom`, `filter`, and `layout` properties from. This allows the layers to share processing and be more efficient."},source:{type:"string",doc:"Name of a source description to be used for this layer."},"source-layer":{type:"string",doc:"Layer to use from a vector tile source. Required if the source supports multiple layers."},minzoom:{type:"number",minimum:0,maximum:22,doc:"The minimum zoom level on which the layer gets parsed and appears on."},maxzoom:{type:"number",minimum:0,maximum:22,doc:"The maximum zoom level on which the layer gets parsed and appears on."},interactive:{type:"boolean",doc:"Enable querying of feature data from this layer for interactivity.","default":!1},filter:{type:"filter",doc:"A expression specifying conditions on source features. Only features that match the filter are displayed."},layout:{type:"layout",doc:"Layout properties for the layer."},paint:{type:"paint",doc:"Default paint properties for this layer."},"paint.*":{type:"paint",doc:"Class-specific paint properties for this layer. The class name is the part after the first dot."}},layout:["layout_fill","layout_line","layout_circle","layout_symbol","layout_raster","layout_background"],layout_background:{visibility:{type:"enum","function":"piecewise-constant",values:["visible","none"],"default":"visible",doc:"The display of this layer. `none` hides this layer."}},layout_fill:{visibility:{type:"enum","function":"piecewise-constant",values:["visible","none"],"default":"visible",doc:"The display of this layer. `none` hides this layer."}},layout_circle:{visibility:{type:"enum","function":"piecewise-constant",values:["visible","none"],"default":"visible",doc:"The display of this layer. `none` hides this layer."}},layout_line:{"line-cap":{type:"enum","function":"piecewise-constant",values:["butt","round","square"],"default":"butt",doc:"The display of line endings."},"line-join":{type:"enum","function":"piecewise-constant",values:["bevel","round","miter"],"default":"miter",doc:"The display of lines when joining."},"line-miter-limit":{type:"number","default":2,"function":"interpolated",doc:"Used to automatically convert miter joins to bevel joins for sharp angles.",requires:[{"line-join":"miter"}]},"line-round-limit":{type:"number","default":1.05,"function":"interpolated",doc:"Used to automatically convert round joins to miter joins for shallow angles.",requires:[{"line-join":"round"}]},visibility:{type:"enum","function":"piecewise-constant",values:["visible","none"],"default":"visible",doc:"The display of this layer. `none` hides this layer."}},layout_symbol:{"symbol-placement":{type:"enum","function":"piecewise-constant",values:["point","line"],"default":"point",doc:"Label placement relative to its geometry. `line` can only be used on LineStrings and Polygons."},"symbol-spacing":{type:"number","default":250,minimum:1,"function":"interpolated",units:"pixels",doc:"Distance between two symbol anchors.",requires:[{"symbol-placement":"line"}]},"symbol-avoid-edges":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer."},"icon-allow-overlap":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, the icon will be visible even if it collides with other previously drawn symbols.",requires:["icon-image"]},"icon-ignore-placement":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, other symbols can be visible even if they collide with the icon.",requires:["icon-image"]},"icon-optional":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.",requires:["icon-image","text-field"]},"icon-rotation-alignment":{type:"enum","function":"piecewise-constant",values:["map","viewport"],"default":"viewport",doc:"Orientation of icon when map is rotated.",requires:["icon-image"]},"icon-size":{type:"number","default":1,minimum:0,"function":"interpolated",doc:"Scale factor for icon. 1 is original size, 3 triples the size.",requires:["icon-image"]},"icon-image":{type:"string","function":"piecewise-constant",doc:"A string with {tokens} replaced, referencing the data property to pull from.",tokens:!0},"icon-rotate":{type:"number","default":0,period:360,"function":"interpolated",units:"degrees",doc:"Rotates the icon clockwise.",requires:["icon-image"]},"icon-padding":{type:"number","default":2,minimum:0,"function":"interpolated",units:"pixels",doc:"Size of the additional area around the icon bounding box used for detecting symbol collisions.",requires:["icon-image"]},"icon-keep-upright":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, the icon may be flipped to prevent it from being rendered upside-down.",requires:["icon-image",{"icon-rotation-alignment":"map"},{"symbol-placement":"line"}]},"icon-offset":{type:"array",value:"number",length:2,"default":[0,0],"function":"interpolated",doc:"Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up.",requires:["icon-image"]},"text-rotation-alignment":{type:"enum","function":"piecewise-constant",values:["map","viewport"],"default":"viewport",doc:"Orientation of text when map is rotated.",requires:["text-field"]},"text-field":{type:"string","function":"piecewise-constant","default":"",tokens:!0,doc:"Value to use for a text label. Feature properties are specified using tokens like {field_name}."},"text-font":{type:"array",value:"string","function":"piecewise-constant","default":["Open Sans Regular","Arial Unicode MS Regular"],doc:"Font stack to use for displaying text.",requires:["text-field"]},"text-size":{type:"number","default":16,minimum:0,units:"pixels","function":"interpolated",doc:"Font size.",requires:["text-field"]},"text-max-width":{type:"number","default":10,minimum:0,units:"em","function":"interpolated",doc:"The maximum line width for text wrapping.",requires:["text-field"]},"text-line-height":{type:"number","default":1.2,units:"em","function":"interpolated",doc:"Text leading value for multi-line text.",requires:["text-field"]},"text-letter-spacing":{type:"number","default":0,units:"em","function":"interpolated",doc:"Text tracking amount.",requires:["text-field"]},"text-justify":{type:"enum","function":"piecewise-constant",values:["left","center","right"],"default":"center",doc:"Text justification options.",requires:["text-field"]},"text-anchor":{type:"enum","function":"piecewise-constant",values:["center","left","right","top","bottom","top-left","top-right","bottom-left","bottom-right"],"default":"center",doc:"Part of the text placed closest to the anchor.",requires:["text-field"]},"text-max-angle":{type:"number","default":45,units:"degrees","function":"interpolated",doc:"Maximum angle change between adjacent characters.",requires:["text-field",{"symbol-placement":"line"}]},"text-rotate":{type:"number","default":0,period:360,units:"degrees","function":"interpolated",doc:"Rotates the text clockwise.",requires:["text-field"]},"text-padding":{type:"number","default":2,minimum:0,units:"pixels","function":"interpolated",doc:"Size of the additional area around the text bounding box used for detecting symbol collisions.",requires:["text-field"]},"text-keep-upright":{type:"boolean","function":"piecewise-constant","default":!0,doc:"If true, the text may be flipped vertically to prevent it from being rendered upside-down.",requires:["text-field",{"text-rotation-alignment":"map"},{"symbol-placement":"line"}]},"text-transform":{type:"enum","function":"piecewise-constant",values:["none","uppercase","lowercase"],"default":"none",doc:"Specifies how to capitalize text, similar to the CSS `text-transform` property.",requires:["text-field"]},"text-offset":{type:"array",doc:"Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up.",value:"number",units:"ems","function":"interpolated",length:2,"default":[0,0],requires:["text-field"]},"text-allow-overlap":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, the text will be visible even if it collides with other previously drawn symbols.",requires:["text-field"]},"text-ignore-placement":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, other symbols can be visible even if they collide with the text.",requires:["text-field"]},"text-optional":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not.",requires:["text-field","icon-image"]},visibility:{type:"enum","function":"piecewise-constant",values:["visible","none"],"default":"visible",doc:"The display of this layer. `none` hides this layer."}},layout_raster:{visibility:{type:"enum","function":"piecewise-constant",values:["visible","none"],"default":"visible",doc:"The display of this layer. `none` hides this layer."}},filter:{type:"array",value:"*",doc:"A filter selects specific features from a layer."},filter_operator:{type:"enum",values:["==","!=",">",">=","<","<=","in","!in","all","any","none","has","!has"],doc:"The filter operator."},geometry_type:{type:"enum",values:["Point","LineString","Polygon"],doc:"The geometry type for the filter to select."},color_operation:{type:"enum",values:["lighten","saturate","spin","fade","mix"],doc:"A color operation to apply."},"function":{stops:{type:"array",required:!0,doc:"An array of stops.",value:"function_stop"},base:{type:"number","default":1,minimum:0,doc:"The exponential base of the interpolation curve. It controls the rate at which the result increases. Higher values make the result increase more towards the high end of the range. With `1` the stops are interpolated linearly."},property:{type:"string",doc:"The name of a global property or feature property to use as the function input.","default":"$zoom"},type:{type:"enum",values:["exponential","interval","categorical"],doc:"The interpolation strategy to use in function evaluation.","default":"exponential"}},function_stop:{type:"array",minimum:0,maximum:22,value:["number","color"],length:2,doc:"Zoom level and value pair."},paint:["paint_fill","paint_line","paint_circle","paint_symbol","paint_raster","paint_background"],paint_fill:{"fill-antialias":{type:"boolean","function":"piecewise-constant","default":!0,doc:"Whether or not the fill should be antialiased."},"fill-opacity":{type:"number","function":"interpolated","default":1,minimum:0,maximum:1,doc:"The opacity given to the fill color.",transition:!0},"fill-color":{type:"color","default":"#000000",doc:"The color of the fill.","function":"interpolated",transition:!0,requires:[{"!":"fill-pattern"}]},"fill-outline-color":{type:"color",doc:"The outline color of the fill. Matches the value of `fill-color` if unspecified.","function":"interpolated",transition:!0,requires:[{"!":"fill-pattern"},{"fill-antialias":!0}]},"fill-translate":{type:"array",value:"number",length:2,"default":[0,0],"function":"interpolated",transition:!0,units:"pixels",doc:"The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."},"fill-translate-anchor":{type:"enum","function":"piecewise-constant",values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen)","default":"map",requires:["fill-translate"]},"fill-pattern":{type:"string","function":"piecewise-constant",transition:!0,doc:"Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512)."}},paint_line:{"line-opacity":{type:"number",doc:"The opacity at which the line will be drawn.","function":"interpolated","default":1,minimum:0,maximum:1,transition:!0},"line-color":{type:"color",doc:"The color with which the line will be drawn.","default":"#000000","function":"interpolated",transition:!0,requires:[{"!":"line-pattern"}]},"line-translate":{type:"array",value:"number",length:2,"default":[0,0],"function":"interpolated",transition:!0,units:"pixels",doc:"The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."},"line-translate-anchor":{type:"enum","function":"piecewise-constant",values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen)","default":"map",requires:["line-translate"]},"line-width":{type:"number","default":1,minimum:0,"function":"interpolated",transition:!0,units:"pixels",doc:"Stroke thickness."},"line-gap-width":{type:"number","default":0,minimum:0,doc:"Draws a line casing outside of a line's actual path. Value indicates the width of the inner gap.","function":"interpolated",transition:!0,units:"pixels"},"line-offset":{type:"number","default":0,doc:'The line\'s offset perpendicular to its direction. Values may be positive or negative, where positive indicates "rightwards" (if you were moving in the direction of the line) and negative indicates "leftwards."',"function":"interpolated",transition:!0,units:"pixels"},"line-blur":{type:"number","default":0,minimum:0,"function":"interpolated",transition:!0,units:"pixels",doc:"Blur applied to the line, in pixels."},"line-dasharray":{type:"array",value:"number","function":"piecewise-constant",doc:"Specifies the lengths of the alternating dashes and gaps that form the dash pattern. The lengths are later scaled by the line width. To convert a dash length to pixels, multiply the length by the current line width.",minimum:0,transition:!0,units:"line widths",requires:[{"!":"line-pattern"}]},"line-pattern":{type:"string","function":"piecewise-constant",transition:!0,doc:"Name of image in sprite to use for drawing image lines. For seamless patterns, image width must be a factor of two (2, 4, 8, ..., 512)."}},paint_circle:{"circle-radius":{type:"number","default":5,minimum:0,"function":"interpolated",transition:!0,units:"pixels",doc:"Circle radius."},"circle-color":{type:"color","default":"#000000",doc:"The color of the circle.","function":"interpolated",
+-transition:!0},"circle-blur":{type:"number","default":0,doc:"Amount to blur the circle. 1 blurs the circle such that only the centerpoint is full opacity.","function":"interpolated",transition:!0},"circle-opacity":{type:"number",doc:"The opacity at which the circle will be drawn.","default":1,minimum:0,maximum:1,"function":"interpolated",transition:!0},"circle-translate":{type:"array",value:"number",length:2,"default":[0,0],"function":"interpolated",transition:!0,units:"pixels",doc:"The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."},"circle-translate-anchor":{type:"enum","function":"piecewise-constant",values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen)","default":"map",requires:["circle-translate"]}},paint_symbol:{"icon-opacity":{doc:"The opacity at which the icon will be drawn.",type:"number","default":1,minimum:0,maximum:1,"function":"interpolated",transition:!0,requires:["icon-image"]},"icon-color":{type:"color","default":"#000000","function":"interpolated",transition:!0,doc:"The color of the icon. This can only be used with sdf icons.",requires:["icon-image"]},"icon-halo-color":{type:"color","default":"rgba(0, 0, 0, 0)","function":"interpolated",transition:!0,doc:"The color of the icon's halo. Icon halos can only be used with sdf icons.",requires:["icon-image"]},"icon-halo-width":{type:"number","default":0,minimum:0,"function":"interpolated",transition:!0,units:"pixels",doc:"Distance of halo to the icon outline.",requires:["icon-image"]},"icon-halo-blur":{type:"number","default":0,minimum:0,"function":"interpolated",transition:!0,units:"pixels",doc:"Fade out the halo towards the outside.",requires:["icon-image"]},"icon-translate":{type:"array",value:"number",length:2,"default":[0,0],"function":"interpolated",transition:!0,units:"pixels",doc:"Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",requires:["icon-image"]},"icon-translate-anchor":{type:"enum","function":"piecewise-constant",values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen).","default":"map",requires:["icon-image","icon-translate"]},"text-opacity":{type:"number",doc:"The opacity at which the text will be drawn.","default":1,minimum:0,maximum:1,"function":"interpolated",transition:!0,requires:["text-field"]},"text-color":{type:"color",doc:"The color with which the text will be drawn.","default":"#000000","function":"interpolated",transition:!0,requires:["text-field"]},"text-halo-color":{type:"color","default":"rgba(0, 0, 0, 0)","function":"interpolated",transition:!0,doc:"The color of the text's halo, which helps it stand out from backgrounds.",requires:["text-field"]},"text-halo-width":{type:"number","default":0,minimum:0,"function":"interpolated",transition:!0,units:"pixels",doc:"Distance of halo to the font outline. Max text halo width is 1/4 of the font-size.",requires:["text-field"]},"text-halo-blur":{type:"number","default":0,minimum:0,"function":"interpolated",transition:!0,units:"pixels",doc:"The halo's fadeout distance towards the outside.",requires:["text-field"]},"text-translate":{type:"array",value:"number",length:2,"default":[0,0],"function":"interpolated",transition:!0,units:"pixels",doc:"Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",requires:["text-field"]},"text-translate-anchor":{type:"enum","function":"piecewise-constant",values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen).","default":"map",requires:["text-field","text-translate"]}},paint_raster:{"raster-opacity":{type:"number",doc:"The opacity at which the image will be drawn.","default":1,minimum:0,maximum:1,"function":"interpolated",transition:!0},"raster-hue-rotate":{type:"number","default":0,period:360,"function":"interpolated",transition:!0,units:"degrees",doc:"Rotates hues around the color wheel."},"raster-brightness-min":{type:"number","function":"interpolated",doc:"Increase or reduce the brightness of the image. The value is the minimum brightness.","default":0,minimum:0,maximum:1,transition:!0},"raster-brightness-max":{type:"number","function":"interpolated",doc:"Increase or reduce the brightness of the image. 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o(t){var e=t.length;if(1>=e)return[t];for(var n,r,i=[],a=0;e>a;a++){var o=s(t[a]);0!==o&&(void 0===r&&(r=0>o),r===0>o?(n&&i.push(n),n=[t[a]]):n.push(t[a]))}return n&&i.push(n),i}function s(t){for(var e,n,r=0,i=0,a=t.length,o=a-1;a>i;o=i++)e=t[i],n=t[o],r+=(n.x-e.x)*(e.y+n.y);return r}var l=t("point-geometry");e.exports=r,r.types=["Unknown","Point","LineString","Polygon"],r.prototype.loadGeometry=function(){var t=this._pbf;t.pos=this._geometry;for(var e,n=t.readVarint()+t.pos,r=1,i=0,a=0,o=0,s=[];t.pos<n;){if(!i){var u=t.readVarint();r=7&u,i=u>>3}if(i--,1===r||2===r)a+=t.readSVarint(),o+=t.readSVarint(),1===r&&(e&&s.push(e),e=[]),e.push(new l(a,o));else{if(7!==r)throw new Error("unknown command "+r);e&&e.push(e[0].clone())}}return e&&s.push(e),s},r.prototype.bbox=function(){var t=this._pbf;t.pos=this._geometry;for(var e=t.readVarint()+t.pos,n=1,r=0,i=0,a=0,o=1/0,s=-(1/0),l=1/0,u=-(1/0);t.pos<e;){if(!r){var c=t.readVarint();n=7&c,r=c>>3}if(r--,1===n||2===n)i+=t.readSVarint(),a+=t.readSVarint(),o>i&&(o=i),i>s&&(s=i),l>a&&(l=a),a>u&&(u=a);else if(7!==n)throw new Error("unknown command "+n)}return[o,l,s,u]},r.prototype.toGeoJSON=function(t,e,n){function i(t){for(var e=0;e<t.length;e++){var n=t[e],r=180-360*(n.y+c)/l;t[e]=[360*(n.x+u)/l-180,360/Math.PI*Math.atan(Math.exp(r*Math.PI/180))-90]}}var a,s,l=this.extent*Math.pow(2,n),u=this.extent*t,c=this.extent*e,f=this.loadGeometry(),h=r.types[this.type];switch(this.type){case 1:var d=[];for(a=0;a<f.length;a++)d[a]=f[a][0];f=d,i(f);break;case 2:for(a=0;a<f.length;a++)i(f[a]);break;case 3:for(f=o(f),a=0;a<f.length;a++)for(s=0;s<f[a].length;s++)i(f[a][s])}1===f.length?f=f[0]:h="Multi"+h;var p={type:"Feature",geometry:{type:h,coordinates:f},properties:this.properties};return"_id"in this&&(p.id=this._id),p}},{"point-geometry":174}],186:[function(t,e,n){"use strict";function r(t,e){this.version=1,this.name=null,this.extent=4096,this.length=0,this._pbf=t,this._keys=[],this._values=[],this._features=[],t.readFields(i,this,e),this.length=this._features.length}function i(t,e,n){15===t?e.version=n.readVarint():1===t?e.name=n.readString():5===t?e.extent=n.readVarint():2===t?e._features.push(n.pos):3===t?e._keys.push(n.readString()):4===t&&e._values.push(a(n))}function a(t){for(var e=null,n=t.readVarint()+t.pos;t.pos<n;){var r=t.readVarint()>>3;e=1===r?t.readString():2===r?t.readFloat():3===r?t.readDouble():4===r?t.readVarint64():5===r?t.readVarint():6===r?t.readSVarint():7===r?t.readBoolean():null}return e}var o=t("./vectortilefeature.js");e.exports=r,r.prototype.feature=function(t){if(0>t||t>=this._features.length)throw new Error("feature index out of bounds");this._pbf.pos=this._features[t];var e=this._pbf.readVarint()+this._pbf.pos;return new o(this._pbf,e,this.extent,this._keys,this._values)}},{"./vectortilefeature.js":185}],187:[function(t,e,n){function r(t){var e=[];for(var n in t.layers)e.push(a(t.layers[n]));var r=new c;return f.tile.write({layers:e},r),r.finish()}function i(t){var e={};for(var n in t)e[n]=new h(t[n].features),e[n].name=n;return r({layers:e})}function a(t){for(var e={name:t.name||"",version:t.version||1,extent:t.extent||4096,keys:[],values:[],features:[]},n={},r={},i=0;i<t.length;i++){var a=t.feature(i);a.geometry=l(a.loadGeometry());var o=[];for(var s in a.properties){var c=n[s];"undefined"==typeof c&&(e.keys.push(s),c=e.keys.length-1,n[s]=c);var f=u(a.properties[s]),h=r[f.key];"undefined"==typeof h&&(e.values.push(f),h=e.values.length-1,r[f.key]=h),o.push(c),o.push(h)}a.tags=o,e.features.push(a)}return e}function o(t,e){return(e<<3)+(7&t)}function s(t){return t<<1^t>>31}function l(t){for(var e=[],n=0,r=0,i=t.length,a=0;i>a;a++){var l=t[a];e.push(o(1,1));for(var u=0;u<l.length;u++){1===u&&e.push(o(2,l.length-1));var c=l[u].x-n,f=l[u].y-r;e.push(s(c),s(f)),n+=c,r+=f}}return e}function u(t){var e,n=typeof t;return 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this.geometry},i.prototype.bbox=function(){this.geometry||this.loadGeometry();for(var t=this.geometry,e=1/0,n=-(1/0),r=1/0,i=-(1/0),a=0;a<t.length;a++)for(var o=t[a],s=0;s<o.length;s++){var l=o[s];e=Math.min(e,l.x),n=Math.max(n,l.x),r=Math.min(r,l.y),i=Math.max(i,l.y)}return[e,r,n,i]},i.prototype.toGeoJSON=o.prototype.toGeoJSON},{"point-geometry":174,"vector-tile":183}],189:[function(t,e,n){"use strict";function r(t,e){return t.readFields(i,{layers:[]},e)}function i(t,e,n){3===t&&e.layers.push(h(n,n.readVarint()+n.pos))}function a(t,e){var n;if(void 0!==t.layers)for(n=0;n<t.layers.length;n++)e.writeMessage(3,p,t.layers[n])}function o(t,e){return t.readFields(s,{},e)}function s(t,e,n){1===t?e.string_value=n.readString():2===t?e.float_value=n.readFloat():3===t?e.double_value=n.readDouble():4===t?e.int_value=n.readVarint():5===t?e.uint_value=n.readVarint():6===t?e.sint_value=n.readSVarint():7===t&&(e.bool_value=n.readBoolean())}function l(t,e){void 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t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t},i.fromValues=function(t,e,n,i,o,a,s,l,u){var c=new r.ARRAY_TYPE(9);return c[0]=t,c[1]=e,c[2]=n,c[3]=i,c[4]=o,c[5]=a,c[6]=s,c[7]=l,c[8]=u,c},i.set=function(t,e,n,r,i,o,a,s,l,u){return t[0]=e,t[1]=n,t[2]=r,t[3]=i,t[4]=o,t[5]=a,t[6]=s,t[7]=l,t[8]=u,t},i.identity=function(t){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=1,t[5]=0,t[6]=0,t[7]=0,t[8]=1,t},i.transpose=function(t,e){if(t===e){var n=e[1],r=e[2],i=e[5];t[1]=e[3],t[2]=e[6],t[3]=n,t[5]=e[7],t[6]=r,t[7]=i}else t[0]=e[0],t[1]=e[3],t[2]=e[6],t[3]=e[1],t[4]=e[4],t[5]=e[7],t[6]=e[2],t[7]=e[5],t[8]=e[8];return t},i.invert=function(t,e){var n=e[0],r=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],f=c*a-s*u,h=-c*o+s*l,d=u*o-a*l,p=n*f+r*h+i*d;return p?(p=1/p,t[0]=f*p,t[1]=(-c*r+i*u)*p,t[2]=(s*r-i*a)*p,t[3]=h*p,t[4]=(c*n-i*l)*p,t[5]=(-s*n+i*o)*p,t[6]=d*p,t[7]=(-u*n+r*l)*p,t[8]=(a*n-r*o)*p,t):null},i.adjoint=function(t,e){var n=e[0],r=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8];return t[0]=a*c-s*u,t[1]=i*u-r*c,t[2]=r*s-i*a,t[3]=s*l-o*c,t[4]=n*c-i*l,t[5]=i*o-n*s,t[6]=o*u-a*l,t[7]=r*l-n*u,t[8]=n*a-r*o,t},i.determinant=function(t){var e=t[0],n=t[1],r=t[2],i=t[3],o=t[4],a=t[5],s=t[6],l=t[7],u=t[8];return e*(u*o-a*l)+n*(-u*i+a*s)+r*(l*i-o*s)},i.multiply=function(t,e,n){var r=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],f=e[8],h=n[0],d=n[1],p=n[2],m=n[3],g=n[4],v=n[5],y=n[6],x=n[7],b=n[8];return t[0]=h*r+d*a+p*u,t[1]=h*i+d*s+p*c,t[2]=h*o+d*l+p*f,t[3]=m*r+g*a+v*u,t[4]=m*i+g*s+v*c,t[5]=m*o+g*l+v*f,t[6]=y*r+x*a+b*u,t[7]=y*i+x*s+b*c,t[8]=y*o+x*l+b*f,t},i.mul=i.multiply,i.translate=function(t,e,n){var r=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],f=e[8],h=n[0],d=n[1];return t[0]=r,t[1]=i,t[2]=o,t[3]=a,t[4]=s,t[5]=l,t[6]=h*r+d*a+u,t[7]=h*i+d*s+c,t[8]=h*o+d*l+f,t},i.rotate=function(t,e,n){var r=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],f=e[8],h=Math.sin(n),d=Math.cos(n);return t[0]=d*r+h*a,t[1]=d*i+h*s,t[2]=d*o+h*l,t[3]=d*a-h*r,t[4]=d*s-h*i,t[5]=d*l-h*o,t[6]=u,t[7]=c,t[8]=f,t},i.scale=function(t,e,n){var r=n[0],i=n[1];return t[0]=r*e[0],t[1]=r*e[1],t[2]=r*e[2],t[3]=i*e[3],t[4]=i*e[4],t[5]=i*e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t},i.fromTranslation=function(t,e){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=1,t[5]=0,t[6]=e[0],t[7]=e[1],t[8]=1,t},i.fromRotation=function(t,e){var n=Math.sin(e),r=Math.cos(e);return t[0]=r,t[1]=n,t[2]=0,t[3]=-n,t[4]=r,t[5]=0,t[6]=0,t[7]=0,t[8]=1,t},i.fromScaling=function(t,e){return t[0]=e[0],t[1]=0,t[2]=0,t[3]=0,t[4]=e[1],t[5]=0,t[6]=0,t[7]=0,t[8]=1,t},i.fromMat2d=function(t,e){return t[0]=e[0],t[1]=e[1],t[2]=0,t[3]=e[2],t[4]=e[3],t[5]=0,t[6]=e[4],t[7]=e[5],t[8]=1,t},i.fromQuat=function(t,e){var n=e[0],r=e[1],i=e[2],o=e[3],a=n+n,s=r+r,l=i+i,u=n*a,c=r*a,f=r*s,h=i*a,d=i*s,p=i*l,m=o*a,g=o*s,v=o*l;return t[0]=1-f-p,t[3]=c-v,t[6]=h+g,t[1]=c+v,t[4]=1-u-p,t[7]=d-m,t[2]=h-g,t[5]=d+m,t[8]=1-u-f,t},i.normalFromMat4=function(t,e){var n=e[0],r=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],f=e[9],h=e[10],d=e[11],p=e[12],m=e[13],g=e[14],v=e[15],y=n*s-r*a,x=n*l-i*a,b=n*u-o*a,_=r*l-i*s,w=r*u-o*s,M=i*u-o*l,k=c*m-f*p,S=c*g-h*p,T=c*v-d*p,A=f*g-h*m,z=f*v-d*m,E=h*v-d*g,L=y*E-x*z+b*A+_*T-w*S+M*k;return L?(L=1/L,t[0]=(s*E-l*z+u*A)*L,t[1]=(l*T-a*E-u*S)*L,t[2]=(a*z-s*T+u*k)*L,t[3]=(i*z-r*E-o*A)*L,t[4]=(n*E-i*T+o*S)*L,t[5]=(r*T-n*z-o*k)*L,t[6]=(m*M-g*w+v*_)*L,t[7]=(g*b-p*M-v*x)*L,t[8]=(p*w-m*b+v*y)*L,t):null},i.str=function(t){return"mat3("+t[0]+", "+t[1]+", "+t[2]+", "+t[3]+", "+t[4]+", "+t[5]+", "+t[6]+", "+t[7]+", "+t[8]+")"},i.frob=function(t){return Math.sqrt(Math.pow(t[0],2)+Math.pow(t[1],2)+Math.pow(t[2],2)+Math.pow(t[3],2)+Math.pow(t[4],2)+Math.pow(t[5],2)+Math.pow(t[6],2)+Math.pow(t[7],2)+Math.pow(t[8],2))},i.add=function(t,e,n){return t[0]=e[0]+n[0],t[1]=e[1]+n[1],t[2]=e[2]+n[2],t[3]=e[3]+n[3],t[4]=e[4]+n[4],t[5]=e[5]+n[5],t[6]=e[6]+n[6],t[7]=e[7]+n[7],t[8]=e[8]+n[8],t},i.subtract=function(t,e,n){return t[0]=e[0]-n[0],t[1]=e[1]-n[1],t[2]=e[2]-n[2],t[3]=e[3]-n[3],t[4]=e[4]-n[4],t[5]=e[5]-n[5],t[6]=e[6]-n[6],t[7]=e[7]-n[7],t[8]=e[8]-n[8],t},i.sub=i.subtract,i.multiplyScalar=function(t,e,n){return t[0]=e[0]*n,t[1]=e[1]*n,t[2]=e[2]*n,t[3]=e[3]*n,t[4]=e[4]*n,t[5]=e[5]*n,t[6]=e[6]*n,t[7]=e[7]*n,t[8]=e[8]*n,t},i.multiplyScalarAndAdd=function(t,e,n,r){return t[0]=e[0]+n[0]*r,t[1]=e[1]+n[1]*r,t[2]=e[2]+n[2]*r,t[3]=e[3]+n[3]*r,t[4]=e[4]+n[4]*r,t[5]=e[5]+n[5]*r,t[6]=e[6]+n[6]*r,t[7]=e[7]+n[7]*r,t[8]=e[8]+n[8]*r,t},i.exactEquals=function(t,e){return t[0]===e[0]&&t[1]===e[1]&&t[2]===e[2]&&t[3]===e[3]&&t[4]===e[4]&&t[5]===e[5]&&t[6]===e[6]&&t[7]===e[7]&&t[8]===e[8]},i.equals=function(t,e){var n=t[0],i=t[1],o=t[2],a=t[3],s=t[4],l=t[5],u=t[6],c=t[7],f=t[8],h=e[0],d=e[1],p=e[2],m=e[3],g=e[4],v=e[5],y=t[6],x=e[7],b=e[8];return Math.abs(n-h)<=r.EPSILON*Math.max(1,Math.abs(n),Math.abs(h))&&Math.abs(i-d)<=r.EPSILON*Math.max(1,Math.abs(i),Math.abs(d))&&Math.abs(o-p)<=r.EPSILON*Math.max(1,Math.abs(o),Math.abs(p))&&Math.abs(a-m)<=r.EPSILON*Math.max(1,Math.abs(a),Math.abs(m))&&Math.abs(s-g)<=r.EPSILON*Math.max(1,Math.abs(s),Math.abs(g))&&Math.abs(l-v)<=r.EPSILON*Math.max(1,Math.abs(l),Math.abs(v))&&Math.abs(u-y)<=r.EPSILON*Math.max(1,Math.abs(u),Math.abs(y))&&Math.abs(c-x)<=r.EPSILON*Math.max(1,Math.abs(c),Math.abs(x))&&Math.abs(f-b)<=r.EPSILON*Math.max(1,Math.abs(f),Math.abs(b))},e.exports=i},{"./common.js":25}],29:[function(t,e,n){var r=t("./common.js"),i={scalar:{},SIMD:{}};i.create=function(){var t=new r.ARRAY_TYPE(16);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.clone=function(t){var e=new r.ARRAY_TYPE(16);return e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e[4]=t[4],e[5]=t[5],e[6]=t[6],e[7]=t[7],e[8]=t[8],e[9]=t[9],e[10]=t[10],e[11]=t[11],e[12]=t[12],e[13]=t[13],e[14]=t[14],e[15]=t[15],e},i.copy=function(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.fromValues=function(t,e,n,i,o,a,s,l,u,c,f,h,d,p,m,g){var v=new r.ARRAY_TYPE(16);return v[0]=t,v[1]=e,v[2]=n,v[3]=i,v[4]=o,v[5]=a,v[6]=s,v[7]=l,v[8]=u,v[9]=c,v[10]=f,v[11]=h,v[12]=d,v[13]=p,v[14]=m,v[15]=g,v},i.set=function(t,e,n,r,i,o,a,s,l,u,c,f,h,d,p,m,g){return t[0]=e,t[1]=n,t[2]=r,t[3]=i,t[4]=o,t[5]=a,t[6]=s,t[7]=l,t[8]=u,t[9]=c,t[10]=f,t[11]=h,t[12]=d,t[13]=p,t[14]=m,t[15]=g,t},i.identity=function(t){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.scalar.transpose=function(t,e){if(t===e){var n=e[1],r=e[2],i=e[3],o=e[6],a=e[7],s=e[11];t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=n,t[6]=e[9],t[7]=e[13],t[8]=r,t[9]=o,t[11]=e[14],t[12]=i,t[13]=a,t[14]=s}else t[0]=e[0],t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=e[1],t[5]=e[5],t[6]=e[9],t[7]=e[13],t[8]=e[2],t[9]=e[6],t[10]=e[10],t[11]=e[14],t[12]=e[3],t[13]=e[7],t[14]=e[11],t[15]=e[15];return t},i.SIMD.transpose=function(t,e){var n,r,i,o,a,s,l,u,c,f;return n=SIMD.Float32x4.load(e,0),r=SIMD.Float32x4.load(e,4),i=SIMD.Float32x4.load(e,8),o=SIMD.Float32x4.load(e,12),a=SIMD.Float32x4.shuffle(n,r,0,1,4,5),s=SIMD.Float32x4.shuffle(i,o,0,1,4,5),l=SIMD.Float32x4.shuffle(a,s,0,2,4,6),u=SIMD.Float32x4.shuffle(a,s,1,3,5,7),SIMD.Float32x4.store(t,0,l),SIMD.Float32x4.store(t,4,u),a=SIMD.Float32x4.shuffle(n,r,2,3,6,7),s=SIMD.Float32x4.shuffle(i,o,2,3,6,7),c=SIMD.Float32x4.shuffle(a,s,0,2,4,6),f=SIMD.Float32x4.shuffle(a,s,1,3,5,7),SIMD.Float32x4.store(t,8,c),SIMD.Float32x4.store(t,12,f),t},i.transpose=r.USE_SIMD?i.SIMD.transpose:i.scalar.transpose,i.scalar.invert=function(t,e){var n=e[0],r=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],f=e[9],h=e[10],d=e[11],p=e[12],m=e[13],g=e[14],v=e[15],y=n*s-r*a,x=n*l-i*a,b=n*u-o*a,_=r*l-i*s,w=r*u-o*s,M=i*u-o*l,k=c*m-f*p,S=c*g-h*p,T=c*v-d*p,A=f*g-h*m,z=f*v-d*m,E=h*v-d*g,L=y*E-x*z+b*A+_*T-w*S+M*k;return L?(L=1/L,t[0]=(s*E-l*z+u*A)*L,t[1]=(i*z-r*E-o*A)*L,t[2]=(m*M-g*w+v*_)*L,t[3]=(h*w-f*M-d*_)*L,t[4]=(l*T-a*E-u*S)*L,t[5]=(n*E-i*T+o*S)*L,t[6]=(g*b-p*M-v*x)*L,t[7]=(c*M-h*b+d*x)*L,t[8]=(a*z-s*T+u*k)*L,t[9]=(r*T-n*z-o*k)*L,t[10]=(p*w-m*b+v*y)*L,t[11]=(f*b-c*w-d*y)*L,t[12]=(s*S-a*A-l*k)*L,t[13]=(n*A-r*S+i*k)*L,t[14]=(m*x-p*_-g*y)*L,t[15]=(c*_-f*x+h*y)*L,t):null},i.SIMD.invert=function(t,e){var n,r,i,o,a,s,l,u,c,f,h=SIMD.Float32x4.load(e,0),d=SIMD.Float32x4.load(e,4),p=SIMD.Float32x4.load(e,8),m=SIMD.Float32x4.load(e,12);return a=SIMD.Float32x4.shuffle(h,d,0,1,4,5),r=SIMD.Float32x4.shuffle(p,m,0,1,4,5),n=SIMD.Float32x4.shuffle(a,r,0,2,4,6),r=SIMD.Float32x4.shuffle(r,a,1,3,5,7),a=SIMD.Float32x4.shuffle(h,d,2,3,6,7),o=SIMD.Float32x4.shuffle(p,m,2,3,6,7),i=SIMD.Float32x4.shuffle(a,o,0,2,4,6),o=SIMD.Float32x4.shuffle(o,a,1,3,5,7),a=SIMD.Float32x4.mul(i,o),a=SIMD.Float32x4.swizzle(a,1,0,3,2),s=SIMD.Float32x4.mul(r,a),l=SIMD.Float32x4.mul(n,a),a=SIMD.Float32x4.swizzle(a,2,3,0,1),s=SIMD.Float32x4.sub(SIMD.Float32x4.mul(r,a),s),l=SIMD.Float32x4.sub(SIMD.Float32x4.mul(n,a),l),l=SIMD.Float32x4.swizzle(l,2,3,0,1),a=SIMD.Float32x4.mul(r,i),a=SIMD.Float32x4.swizzle(a,1,0,3,2),s=SIMD.Float32x4.add(SIMD.Float32x4.mul(o,a),s),c=SIMD.Float32x4.mul(n,a),a=SIMD.Float32x4.swizzle(a,2,3,0,1),s=SIMD.Float32x4.sub(s,SIMD.Float32x4.mul(o,a)),c=SIMD.Float32x4.sub(SIMD.Float32x4.mul(n,a),c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),a=SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(r,2,3,0,1),o),a=SIMD.Float32x4.swizzle(a,1,0,3,2),i=SIMD.Float32x4.swizzle(i,2,3,0,1),s=SIMD.Float32x4.add(SIMD.Float32x4.mul(i,a),s),u=SIMD.Float32x4.mul(n,a),a=SIMD.Float32x4.swizzle(a,2,3,0,1),s=SIMD.Float32x4.sub(s,SIMD.Float32x4.mul(i,a)),u=SIMD.Float32x4.sub(SIMD.Float32x4.mul(n,a),u),u=SIMD.Float32x4.swizzle(u,2,3,0,1),a=SIMD.Float32x4.mul(n,r),a=SIMD.Float32x4.swizzle(a,1,0,3,2),u=SIMD.Float32x4.add(SIMD.Float32x4.mul(o,a),u),c=SIMD.Float32x4.sub(SIMD.Float32x4.mul(i,a),c),a=SIMD.Float32x4.swizzle(a,2,3,0,1),u=SIMD.Float32x4.sub(SIMD.Float32x4.mul(o,a),u),c=SIMD.Float32x4.sub(c,SIMD.Float32x4.mul(i,a)),a=SIMD.Float32x4.mul(n,o),a=SIMD.Float32x4.swizzle(a,1,0,3,2),l=SIMD.Float32x4.sub(l,SIMD.Float32x4.mul(i,a)),u=SIMD.Float32x4.add(SIMD.Float32x4.mul(r,a),u),a=SIMD.Float32x4.swizzle(a,2,3,0,1),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(i,a),l),u=SIMD.Float32x4.sub(u,SIMD.Float32x4.mul(r,a)),a=SIMD.Float32x4.mul(n,i),a=SIMD.Float32x4.swizzle(a,1,0,3,2),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(o,a),l),c=SIMD.Float32x4.sub(c,SIMD.Float32x4.mul(r,a)),a=SIMD.Float32x4.swizzle(a,2,3,0,1),l=SIMD.Float32x4.sub(l,SIMD.Float32x4.mul(o,a)),c=SIMD.Float32x4.add(SIMD.Float32x4.mul(r,a),c),f=SIMD.Float32x4.mul(n,s),f=SIMD.Float32x4.add(SIMD.Float32x4.swizzle(f,2,3,0,1),f),f=SIMD.Float32x4.add(SIMD.Float32x4.swizzle(f,1,0,3,2),f),a=SIMD.Float32x4.reciprocalApproximation(f),f=SIMD.Float32x4.sub(SIMD.Float32x4.add(a,a),SIMD.Float32x4.mul(f,SIMD.Float32x4.mul(a,a))),(f=SIMD.Float32x4.swizzle(f,0,0,0,0))?(SIMD.Float32x4.store(t,0,SIMD.Float32x4.mul(f,s)),SIMD.Float32x4.store(t,4,SIMD.Float32x4.mul(f,l)),SIMD.Float32x4.store(t,8,SIMD.Float32x4.mul(f,u)),SIMD.Float32x4.store(t,12,SIMD.Float32x4.mul(f,c)),t):null},i.invert=r.USE_SIMD?i.SIMD.invert:i.scalar.invert,i.scalar.adjoint=function(t,e){var n=e[0],r=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],f=e[9],h=e[10],d=e[11],p=e[12],m=e[13],g=e[14],v=e[15];return t[0]=s*(h*v-d*g)-f*(l*v-u*g)+m*(l*d-u*h),t[1]=-(r*(h*v-d*g)-f*(i*v-o*g)+m*(i*d-o*h)),t[2]=r*(l*v-u*g)-s*(i*v-o*g)+m*(i*u-o*l),t[3]=-(r*(l*d-u*h)-s*(i*d-o*h)+f*(i*u-o*l)),t[4]=-(a*(h*v-d*g)-c*(l*v-u*g)+p*(l*d-u*h)),t[5]=n*(h*v-d*g)-c*(i*v-o*g)+p*(i*d-o*h),t[6]=-(n*(l*v-u*g)-a*(i*v-o*g)+p*(i*u-o*l)),t[7]=n*(l*d-u*h)-a*(i*d-o*h)+c*(i*u-o*l),t[8]=a*(f*v-d*m)-c*(s*v-u*m)+p*(s*d-u*f),t[9]=-(n*(f*v-d*m)-c*(r*v-o*m)+p*(r*d-o*f)),t[10]=n*(s*v-u*m)-a*(r*v-o*m)+p*(r*u-o*s),t[11]=-(n*(s*d-u*f)-a*(r*d-o*f)+c*(r*u-o*s)),t[12]=-(a*(f*g-h*m)-c*(s*g-l*m)+p*(s*h-l*f)),t[13]=n*(f*g-h*m)-c*(r*g-i*m)+p*(r*h-i*f),t[14]=-(n*(s*g-l*m)-a*(r*g-i*m)+p*(r*l-i*s)),t[15]=n*(s*h-l*f)-a*(r*h-i*f)+c*(r*l-i*s),t},i.SIMD.adjoint=function(t,e){var n,r,i,o,a,s,l,u,c,f,h,d,p,n=SIMD.Float32x4.load(e,0),r=SIMD.Float32x4.load(e,4),i=SIMD.Float32x4.load(e,8),o=SIMD.Float32x4.load(e,12);return c=SIMD.Float32x4.shuffle(n,r,0,1,4,5),s=SIMD.Float32x4.shuffle(i,o,0,1,4,5),a=SIMD.Float32x4.shuffle(c,s,0,2,4,6),s=SIMD.Float32x4.shuffle(s,c,1,3,5,7),c=SIMD.Float32x4.shuffle(n,r,2,3,6,7),u=SIMD.Float32x4.shuffle(i,o,2,3,6,7),l=SIMD.Float32x4.shuffle(c,u,0,2,4,6),u=SIMD.Float32x4.shuffle(u,c,1,3,5,7),c=SIMD.Float32x4.mul(l,u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),f=SIMD.Float32x4.mul(s,c),h=SIMD.Float32x4.mul(a,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),f=SIMD.Float32x4.sub(SIMD.Float32x4.mul(s,c),f),h=SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,c),h),h=SIMD.Float32x4.swizzle(h,2,3,0,1),c=SIMD.Float32x4.mul(s,l),c=SIMD.Float32x4.swizzle(c,1,0,3,2),f=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),f),p=SIMD.Float32x4.mul(a,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),f=SIMD.Float32x4.sub(f,SIMD.Float32x4.mul(u,c)),p=SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,c),p),p=SIMD.Float32x4.swizzle(p,2,3,0,1),c=SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,2,3,0,1),u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),l=SIMD.Float32x4.swizzle(l,2,3,0,1),f=SIMD.Float32x4.add(SIMD.Float32x4.mul(l,c),f),d=SIMD.Float32x4.mul(a,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),f=SIMD.Float32x4.sub(f,SIMD.Float32x4.mul(l,c)),d=SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,c),d),d=SIMD.Float32x4.swizzle(d,2,3,0,1),c=SIMD.Float32x4.mul(a,s),c=SIMD.Float32x4.swizzle(c,1,0,3,2),d=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),d),p=SIMD.Float32x4.sub(SIMD.Float32x4.mul(l,c),p),c=SIMD.Float32x4.swizzle(c,2,3,0,1),d=SIMD.Float32x4.sub(SIMD.Float32x4.mul(u,c),d),p=SIMD.Float32x4.sub(p,SIMD.Float32x4.mul(l,c)),c=SIMD.Float32x4.mul(a,u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),h=SIMD.Float32x4.sub(h,SIMD.Float32x4.mul(l,c)),d=SIMD.Float32x4.add(SIMD.Float32x4.mul(s,c),d),c=SIMD.Float32x4.swizzle(c,2,3,0,1),h=SIMD.Float32x4.add(SIMD.Float32x4.mul(l,c),h),d=SIMD.Float32x4.sub(d,SIMD.Float32x4.mul(s,c)),c=SIMD.Float32x4.mul(a,l),c=SIMD.Float32x4.swizzle(c,1,0,3,2),h=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),h),p=SIMD.Float32x4.sub(p,SIMD.Float32x4.mul(s,c)),c=SIMD.Float32x4.swizzle(c,2,3,0,1),h=SIMD.Float32x4.sub(h,SIMD.Float32x4.mul(u,c)),p=SIMD.Float32x4.add(SIMD.Float32x4.mul(s,c),p),SIMD.Float32x4.store(t,0,f),SIMD.Float32x4.store(t,4,h),SIMD.Float32x4.store(t,8,d),SIMD.Float32x4.store(t,12,p),t},i.adjoint=r.USE_SIMD?i.SIMD.adjoint:i.scalar.adjoint,i.determinant=function(t){var e=t[0],n=t[1],r=t[2],i=t[3],o=t[4],a=t[5],s=t[6],l=t[7],u=t[8],c=t[9],f=t[10],h=t[11],d=t[12],p=t[13],m=t[14],g=t[15],v=e*a-n*o,y=e*s-r*o,x=e*l-i*o,b=n*s-r*a,_=n*l-i*a,w=r*l-i*s,M=u*p-c*d,k=u*m-f*d,S=u*g-h*d,T=c*m-f*p,A=c*g-h*p,z=f*g-h*m;return v*z-y*A+x*T+b*S-_*k+w*M},i.SIMD.multiply=function(t,e,n){var r=SIMD.Float32x4.load(e,0),i=SIMD.Float32x4.load(e,4),o=SIMD.Float32x4.load(e,8),a=SIMD.Float32x4.load(e,12),s=SIMD.Float32x4.load(n,0),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,0,0,0,0),r),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,3,3,3,3),a))));SIMD.Float32x4.store(t,0,l);var u=SIMD.Float32x4.load(n,4),c=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,0,0,0,0),r),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,3,3,3,3),a))));SIMD.Float32x4.store(t,4,c);var f=SIMD.Float32x4.load(n,8),h=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(f,0,0,0,0),r),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(f,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(f,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(f,3,3,3,3),a))));SIMD.Float32x4.store(t,8,h);var d=SIMD.Float32x4.load(n,12),p=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,0,0,0,0),r),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,3,3,3,3),a))));return SIMD.Float32x4.store(t,12,p),t},i.scalar.multiply=function(t,e,n){var r=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],f=e[8],h=e[9],d=e[10],p=e[11],m=e[12],g=e[13],v=e[14],y=e[15],x=n[0],b=n[1],_=n[2],w=n[3];return t[0]=x*r+b*s+_*f+w*m,t[1]=x*i+b*l+_*h+w*g,t[2]=x*o+b*u+_*d+w*v,t[3]=x*a+b*c+_*p+w*y,x=n[4],b=n[5],_=n[6],w=n[7],t[4]=x*r+b*s+_*f+w*m,t[5]=x*i+b*l+_*h+w*g,t[6]=x*o+b*u+_*d+w*v,t[7]=x*a+b*c+_*p+w*y,x=n[8],b=n[9],_=n[10],w=n[11],t[8]=x*r+b*s+_*f+w*m,t[9]=x*i+b*l+_*h+w*g,t[10]=x*o+b*u+_*d+w*v,t[11]=x*a+b*c+_*p+w*y,x=n[12],b=n[13],_=n[14],w=n[15],t[12]=x*r+b*s+_*f+w*m,t[13]=x*i+b*l+_*h+w*g,t[14]=x*o+b*u+_*d+w*v,t[15]=x*a+b*c+_*p+w*y,t},i.multiply=r.USE_SIMD?i.SIMD.multiply:i.scalar.multiply,i.mul=i.multiply,i.scalar.translate=function(t,e,n){var r,i,o,a,s,l,u,c,f,h,d,p,m=n[0],g=n[1],v=n[2];return e===t?(t[12]=e[0]*m+e[4]*g+e[8]*v+e[12],t[13]=e[1]*m+e[5]*g+e[9]*v+e[13],t[14]=e[2]*m+e[6]*g+e[10]*v+e[14],t[15]=e[3]*m+e[7]*g+e[11]*v+e[15]):(r=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],f=e[8],h=e[9],d=e[10],p=e[11],t[0]=r,t[1]=i,t[2]=o,t[3]=a,t[4]=s,t[5]=l,t[6]=u,t[7]=c,t[8]=f,t[9]=h,t[10]=d,t[11]=p,t[12]=r*m+s*g+f*v+e[12],t[13]=i*m+l*g+h*v+e[13],t[14]=o*m+u*g+d*v+e[14],t[15]=a*m+c*g+p*v+e[15]),t},i.SIMD.translate=function(t,e,n){var r=SIMD.Float32x4.load(e,0),i=SIMD.Float32x4.load(e,4),o=SIMD.Float32x4.load(e,8),a=SIMD.Float32x4.load(e,12),s=SIMD.Float32x4(n[0],n[1],n[2],0);e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11]),r=SIMD.Float32x4.mul(r,SIMD.Float32x4.swizzle(s,0,0,0,0)),i=SIMD.Float32x4.mul(i,SIMD.Float32x4.swizzle(s,1,1,1,1)),o=SIMD.Float32x4.mul(o,SIMD.Float32x4.swizzle(s,2,2,2,2));var l=SIMD.Float32x4.add(r,SIMD.Float32x4.add(i,SIMD.Float32x4.add(o,a)));return SIMD.Float32x4.store(t,12,l),t},i.translate=r.USE_SIMD?i.SIMD.translate:i.scalar.translate,i.scalar.scale=function(t,e,n){var r=n[0],i=n[1],o=n[2];return t[0]=e[0]*r,t[1]=e[1]*r,t[2]=e[2]*r,t[3]=e[3]*r,t[4]=e[4]*i,t[5]=e[5]*i,t[6]=e[6]*i,t[7]=e[7]*i,t[8]=e[8]*o,t[9]=e[9]*o,t[10]=e[10]*o,t[11]=e[11]*o,t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.SIMD.scale=function(t,e,n){var r,i,o,a=SIMD.Float32x4(n[0],n[1],n[2],0);return r=SIMD.Float32x4.load(e,0),SIMD.Float32x4.store(t,0,SIMD.Float32x4.mul(r,SIMD.Float32x4.swizzle(a,0,0,0,0))),i=SIMD.Float32x4.load(e,4),SIMD.Float32x4.store(t,4,SIMD.Float32x4.mul(i,SIMD.Float32x4.swizzle(a,1,1,1,1))),o=SIMD.Float32x4.load(e,8),SIMD.Float32x4.store(t,8,SIMD.Float32x4.mul(o,SIMD.Float32x4.swizzle(a,2,2,2,2))),t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.scale=r.USE_SIMD?i.SIMD.scale:i.scalar.scale,i.rotate=function(t,e,n,i){var o,a,s,l,u,c,f,h,d,p,m,g,v,y,x,b,_,w,M,k,S,T,A,z,E=i[0],L=i[1],I=i[2],D=Math.sqrt(E*E+L*L+I*I);return Math.abs(D)<r.EPSILON?null:(D=1/D,E*=D,L*=D,I*=D,o=Math.sin(n),a=Math.cos(n),s=1-a,l=e[0],u=e[1],c=e[2],f=e[3],h=e[4],d=e[5],p=e[6],m=e[7],g=e[8],v=e[9],y=e[10],x=e[11],b=E*E*s+a,_=L*E*s+I*o,w=I*E*s-L*o,M=E*L*s-I*o,k=L*L*s+a,S=I*L*s+E*o,T=E*I*s+L*o,A=L*I*s-E*o,z=I*I*s+a,t[0]=l*b+h*_+g*w,t[1]=u*b+d*_+v*w,t[2]=c*b+p*_+y*w,t[3]=f*b+m*_+x*w,t[4]=l*M+h*k+g*S,t[5]=u*M+d*k+v*S,t[6]=c*M+p*k+y*S,t[7]=f*M+m*k+x*S,t[8]=l*T+h*A+g*z,t[9]=u*T+d*A+v*z,t[10]=c*T+p*A+y*z,t[11]=f*T+m*A+x*z,e!==t&&(t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t)},i.scalar.rotateX=function(t,e,n){var r=Math.sin(n),i=Math.cos(n),o=e[4],a=e[5],s=e[6],l=e[7],u=e[8],c=e[9],f=e[10],h=e[11];return e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[4]=o*i+u*r,t[5]=a*i+c*r,t[6]=s*i+f*r,t[7]=l*i+h*r,t[8]=u*i-o*r,t[9]=c*i-a*r,t[10]=f*i-s*r,t[11]=h*i-l*r,t},i.SIMD.rotateX=function(t,e,n){var r=SIMD.Float32x4.splat(Math.sin(n)),i=SIMD.Float32x4.splat(Math.cos(n));e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var o=SIMD.Float32x4.load(e,4),a=SIMD.Float32x4.load(e,8);return SIMD.Float32x4.store(t,4,SIMD.Float32x4.add(SIMD.Float32x4.mul(o,i),SIMD.Float32x4.mul(a,r))),SIMD.Float32x4.store(t,8,SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,i),SIMD.Float32x4.mul(o,r))),t},i.rotateX=r.USE_SIMD?i.SIMD.rotateX:i.scalar.rotateX,i.scalar.rotateY=function(t,e,n){var r=Math.sin(n),i=Math.cos(n),o=e[0],a=e[1],s=e[2],l=e[3],u=e[8],c=e[9],f=e[10],h=e[11];return e!==t&&(t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i-u*r,t[1]=a*i-c*r,t[2]=s*i-f*r,t[3]=l*i-h*r,t[8]=o*r+u*i,t[9]=a*r+c*i,t[10]=s*r+f*i,t[11]=l*r+h*i,t},i.SIMD.rotateY=function(t,e,n){var r=SIMD.Float32x4.splat(Math.sin(n)),i=SIMD.Float32x4.splat(Math.cos(n));e!==t&&(t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var o=SIMD.Float32x4.load(e,0),a=SIMD.Float32x4.load(e,8);return SIMD.Float32x4.store(t,0,SIMD.Float32x4.sub(SIMD.Float32x4.mul(o,i),SIMD.Float32x4.mul(a,r))),SIMD.Float32x4.store(t,8,SIMD.Float32x4.add(SIMD.Float32x4.mul(o,r),SIMD.Float32x4.mul(a,i))),t},i.rotateY=r.USE_SIMD?i.SIMD.rotateY:i.scalar.rotateY,i.scalar.rotateZ=function(t,e,n){var r=Math.sin(n),i=Math.cos(n),o=e[0],a=e[1],s=e[2],l=e[3],u=e[4],c=e[5],f=e[6],h=e[7];return e!==t&&(t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i+u*r,t[1]=a*i+c*r,t[2]=s*i+f*r,t[3]=l*i+h*r,t[4]=u*i-o*r,t[5]=c*i-a*r,t[6]=f*i-s*r,t[7]=h*i-l*r,t},i.SIMD.rotateZ=function(t,e,n){var r=SIMD.Float32x4.splat(Math.sin(n)),i=SIMD.Float32x4.splat(Math.cos(n));e!==t&&(t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var o=SIMD.Float32x4.load(e,0),a=SIMD.Float32x4.load(e,4);return SIMD.Float32x4.store(t,0,SIMD.Float32x4.add(SIMD.Float32x4.mul(o,i),SIMD.Float32x4.mul(a,r))),SIMD.Float32x4.store(t,4,SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,i),SIMD.Float32x4.mul(o,r))),t},i.rotateZ=r.USE_SIMD?i.SIMD.rotateZ:i.scalar.rotateZ,i.fromTranslation=function(t,e){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=e[0],t[13]=e[1],t[14]=e[2],t[15]=1,t},i.fromScaling=function(t,e){
++return t[0]=e[0],t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=e[1],t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=e[2],t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromRotation=function(t,e,n){var i,o,a,s=n[0],l=n[1],u=n[2],c=Math.sqrt(s*s+l*l+u*u);return Math.abs(c)<r.EPSILON?null:(c=1/c,s*=c,l*=c,u*=c,i=Math.sin(e),o=Math.cos(e),a=1-o,t[0]=s*s*a+o,t[1]=l*s*a+u*i,t[2]=u*s*a-l*i,t[3]=0,t[4]=s*l*a-u*i,t[5]=l*l*a+o,t[6]=u*l*a+s*i,t[7]=0,t[8]=s*u*a+l*i,t[9]=l*u*a-s*i,t[10]=u*u*a+o,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t)},i.fromXRotation=function(t,e){var n=Math.sin(e),r=Math.cos(e);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=r,t[6]=n,t[7]=0,t[8]=0,t[9]=-n,t[10]=r,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromYRotation=function(t,e){var n=Math.sin(e),r=Math.cos(e);return t[0]=r,t[1]=0,t[2]=-n,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=n,t[9]=0,t[10]=r,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromZRotation=function(t,e){var n=Math.sin(e),r=Math.cos(e);return t[0]=r,t[1]=n,t[2]=0,t[3]=0,t[4]=-n,t[5]=r,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromRotationTranslation=function(t,e,n){var r=e[0],i=e[1],o=e[2],a=e[3],s=r+r,l=i+i,u=o+o,c=r*s,f=r*l,h=r*u,d=i*l,p=i*u,m=o*u,g=a*s,v=a*l,y=a*u;return t[0]=1-(d+m),t[1]=f+y,t[2]=h-v,t[3]=0,t[4]=f-y,t[5]=1-(c+m),t[6]=p+g,t[7]=0,t[8]=h+v,t[9]=p-g,t[10]=1-(c+d),t[11]=0,t[12]=n[0],t[13]=n[1],t[14]=n[2],t[15]=1,t},i.getTranslation=function(t,e){return t[0]=e[12],t[1]=e[13],t[2]=e[14],t},i.getRotation=function(t,e){var n=e[0]+e[5]+e[10],r=0;return n>0?(r=2*Math.sqrt(n+1),t[3]=.25*r,t[0]=(e[6]-e[9])/r,t[1]=(e[8]-e[2])/r,t[2]=(e[1]-e[4])/r):e[0]>e[5]&e[0]>e[10]?(r=2*Math.sqrt(1+e[0]-e[5]-e[10]),t[3]=(e[6]-e[9])/r,t[0]=.25*r,t[1]=(e[1]+e[4])/r,t[2]=(e[8]+e[2])/r):e[5]>e[10]?(r=2*Math.sqrt(1+e[5]-e[0]-e[10]),t[3]=(e[8]-e[2])/r,t[0]=(e[1]+e[4])/r,t[1]=.25*r,t[2]=(e[6]+e[9])/r):(r=2*Math.sqrt(1+e[10]-e[0]-e[5]),t[3]=(e[1]-e[4])/r,t[0]=(e[8]+e[2])/r,t[1]=(e[6]+e[9])/r,t[2]=.25*r),t},i.fromRotationTranslationScale=function(t,e,n,r){var i=e[0],o=e[1],a=e[2],s=e[3],l=i+i,u=o+o,c=a+a,f=i*l,h=i*u,d=i*c,p=o*u,m=o*c,g=a*c,v=s*l,y=s*u,x=s*c,b=r[0],_=r[1],w=r[2];return t[0]=(1-(p+g))*b,t[1]=(h+x)*b,t[2]=(d-y)*b,t[3]=0,t[4]=(h-x)*_,t[5]=(1-(f+g))*_,t[6]=(m+v)*_,t[7]=0,t[8]=(d+y)*w,t[9]=(m-v)*w,t[10]=(1-(f+p))*w,t[11]=0,t[12]=n[0],t[13]=n[1],t[14]=n[2],t[15]=1,t},i.fromRotationTranslationScaleOrigin=function(t,e,n,r,i){var o=e[0],a=e[1],s=e[2],l=e[3],u=o+o,c=a+a,f=s+s,h=o*u,d=o*c,p=o*f,m=a*c,g=a*f,v=s*f,y=l*u,x=l*c,b=l*f,_=r[0],w=r[1],M=r[2],k=i[0],S=i[1],T=i[2];return t[0]=(1-(m+v))*_,t[1]=(d+b)*_,t[2]=(p-x)*_,t[3]=0,t[4]=(d-b)*w,t[5]=(1-(h+v))*w,t[6]=(g+y)*w,t[7]=0,t[8]=(p+x)*M,t[9]=(g-y)*M,t[10]=(1-(h+m))*M,t[11]=0,t[12]=n[0]+k-(t[0]*k+t[4]*S+t[8]*T),t[13]=n[1]+S-(t[1]*k+t[5]*S+t[9]*T),t[14]=n[2]+T-(t[2]*k+t[6]*S+t[10]*T),t[15]=1,t},i.fromQuat=function(t,e){var n=e[0],r=e[1],i=e[2],o=e[3],a=n+n,s=r+r,l=i+i,u=n*a,c=r*a,f=r*s,h=i*a,d=i*s,p=i*l,m=o*a,g=o*s,v=o*l;return t[0]=1-f-p,t[1]=c+v,t[2]=h-g,t[3]=0,t[4]=c-v,t[5]=1-u-p,t[6]=d+m,t[7]=0,t[8]=h+g,t[9]=d-m,t[10]=1-u-f,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.frustum=function(t,e,n,r,i,o,a){var s=1/(n-e),l=1/(i-r),u=1/(o-a);return t[0]=2*o*s,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=2*o*l,t[6]=0,t[7]=0,t[8]=(n+e)*s,t[9]=(i+r)*l,t[10]=(a+o)*u,t[11]=-1,t[12]=0,t[13]=0,t[14]=a*o*2*u,t[15]=0,t},i.perspective=function(t,e,n,r,i){var o=1/Math.tan(e/2),a=1/(r-i);return t[0]=o/n,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=o,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=(i+r)*a,t[11]=-1,t[12]=0,t[13]=0,t[14]=2*i*r*a,t[15]=0,t},i.perspectiveFromFieldOfView=function(t,e,n,r){var i=Math.tan(e.upDegrees*Math.PI/180),o=Math.tan(e.downDegrees*Math.PI/180),a=Math.tan(e.leftDegrees*Math.PI/180),s=Math.tan(e.rightDegrees*Math.PI/180),l=2/(a+s),u=2/(i+o);return t[0]=l,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=u,t[6]=0,t[7]=0,t[8]=-((a-s)*l*.5),t[9]=(i-o)*u*.5,t[10]=r/(n-r),t[11]=-1,t[12]=0,t[13]=0,t[14]=r*n/(n-r),t[15]=0,t},i.ortho=function(t,e,n,r,i,o,a){var s=1/(e-n),l=1/(r-i),u=1/(o-a);return t[0]=-2*s,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=-2*l,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=2*u,t[11]=0,t[12]=(e+n)*s,t[13]=(i+r)*l,t[14]=(a+o)*u,t[15]=1,t},i.lookAt=function(t,e,n,o){var a,s,l,u,c,f,h,d,p,m,g=e[0],v=e[1],y=e[2],x=o[0],b=o[1],_=o[2],w=n[0],M=n[1],k=n[2];return Math.abs(g-w)<r.EPSILON&&Math.abs(v-M)<r.EPSILON&&Math.abs(y-k)<r.EPSILON?i.identity(t):(h=g-w,d=v-M,p=y-k,m=1/Math.sqrt(h*h+d*d+p*p),h*=m,d*=m,p*=m,a=b*p-_*d,s=_*h-x*p,l=x*d-b*h,m=Math.sqrt(a*a+s*s+l*l),m?(m=1/m,a*=m,s*=m,l*=m):(a=0,s=0,l=0),u=d*l-p*s,c=p*a-h*l,f=h*s-d*a,m=Math.sqrt(u*u+c*c+f*f),m?(m=1/m,u*=m,c*=m,f*=m):(u=0,c=0,f=0),t[0]=a,t[1]=u,t[2]=h,t[3]=0,t[4]=s,t[5]=c,t[6]=d,t[7]=0,t[8]=l,t[9]=f,t[10]=p,t[11]=0,t[12]=-(a*g+s*v+l*y),t[13]=-(u*g+c*v+f*y),t[14]=-(h*g+d*v+p*y),t[15]=1,t)},i.str=function(t){return"mat4("+t[0]+", "+t[1]+", "+t[2]+", "+t[3]+", "+t[4]+", "+t[5]+", "+t[6]+", "+t[7]+", "+t[8]+", "+t[9]+", "+t[10]+", "+t[11]+", "+t[12]+", "+t[13]+", "+t[14]+", "+t[15]+")"},i.frob=function(t){return Math.sqrt(Math.pow(t[0],2)+Math.pow(t[1],2)+Math.pow(t[2],2)+Math.pow(t[3],2)+Math.pow(t[4],2)+Math.pow(t[5],2)+Math.pow(t[6],2)+Math.pow(t[7],2)+Math.pow(t[8],2)+Math.pow(t[9],2)+Math.pow(t[10],2)+Math.pow(t[11],2)+Math.pow(t[12],2)+Math.pow(t[13],2)+Math.pow(t[14],2)+Math.pow(t[15],2))},i.add=function(t,e,n){return t[0]=e[0]+n[0],t[1]=e[1]+n[1],t[2]=e[2]+n[2],t[3]=e[3]+n[3],t[4]=e[4]+n[4],t[5]=e[5]+n[5],t[6]=e[6]+n[6],t[7]=e[7]+n[7],t[8]=e[8]+n[8],t[9]=e[9]+n[9],t[10]=e[10]+n[10],t[11]=e[11]+n[11],t[12]=e[12]+n[12],t[13]=e[13]+n[13],t[14]=e[14]+n[14],t[15]=e[15]+n[15],t},i.subtract=function(t,e,n){return t[0]=e[0]-n[0],t[1]=e[1]-n[1],t[2]=e[2]-n[2],t[3]=e[3]-n[3],t[4]=e[4]-n[4],t[5]=e[5]-n[5],t[6]=e[6]-n[6],t[7]=e[7]-n[7],t[8]=e[8]-n[8],t[9]=e[9]-n[9],t[10]=e[10]-n[10],t[11]=e[11]-n[11],t[12]=e[12]-n[12],t[13]=e[13]-n[13],t[14]=e[14]-n[14],t[15]=e[15]-n[15],t},i.sub=i.subtract,i.multiplyScalar=function(t,e,n){return 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r=t("../error/validation_error"),i=t("../util/unbundle_jsonlint"),o=t("./validate_object"),a=t("./validate_filter"),s=t("./validate_paint_property"),l=t("./validate_layout_property"),u=t("../util/extend");e.exports=function(t){var e=[],n=t.value,c=t.key,f=t.style,h=t.styleSpec;n.type||n.ref||e.push(new r(c,n,'either "type" or "ref" is required'));var d=i(n.type),p=i(n.ref);if(n.id)for(var m=0;m<t.arrayIndex;m++){var g=f.layers[m];i(g.id)===i(n.id)&&e.push(new r(c,n.id,'duplicate layer id "%s", previously used at line %d',n.id,g.id.__line__))}if("ref"in n){["type","source","source-layer","filter","layout"].forEach(function(t){t in n&&e.push(new r(c,n[t],'"%s" is prohibited for ref layers',t))});var v;f.layers.forEach(function(t){t.id==p&&(v=t)}),v?v.ref?e.push(new r(c,n.ref,"ref cannot reference another ref layer")):d=i(v.type):e.push(new r(c,n.ref,'ref layer "%s" not found',p))}else if("background"!==d)if(n.source){var 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s(u({layerType:d},t))}}})}}}))}},{"../error/validation_error":42,"../util/extend":43,"../util/unbundle_jsonlint":45,"./validate_filter":52,"./validate_layout_property":56,"./validate_object":58,"./validate_paint_property":59}],56:[function(t,e,n){"use strict";var r=t("./validate"),i=t("../error/validation_error");e.exports=function(t){var e=t.key,n=t.style,o=t.styleSpec,a=t.value,s=t.objectKey,l=o["layout_"+t.layerType];if(!l)return[];if(t.valueSpec||l[s]){var u=[];return"symbol"===t.layerType&&("icon-image"===s&&n&&!n.sprite?u.push(new i(e,a,'use of "icon-image" requires a style "sprite" property')):"text-field"===s&&n&&!n.glyphs&&u.push(new i(e,a,'use of "text-field" requires a style "glyphs" property'))),u.concat(r({key:t.key,value:a,valueSpec:t.valueSpec||l[s],style:n,styleSpec:o}))}return[new i(e,a,'unknown property "%s"',s)]}},{"../error/validation_error":42,"./validate":46}],57:[function(t,e,n){"use strict";var r=t("../util/get_type"),i=t("../error/validation_error");e.exports=function(t){var e=t.key,n=t.value,o=t.valueSpec,a=r(n);return"number"!==a?[new i(e,n,"number expected, %s found",a)]:"minimum"in o&&n<o.minimum?[new i(e,n,"%s is less than the minimum value %s",n,o.minimum)]:"maximum"in o&&n>o.maximum?[new i(e,n,"%s is greater than the maximum value %s",n,o.maximum)]:[]}},{"../error/validation_error":42,"../util/get_type":44}],58:[function(t,e,n){"use strict";var r=t("../error/validation_error"),i=t("../util/get_type"),o=t("./validate");e.exports=function(t){var e=t.key,n=t.value,a=t.valueSpec,s=t.objectElementValidators||{},l=t.style,u=t.styleSpec,c=[],f=i(n);if("object"!==f)return[new r(e,n,"object expected, %s found",f)];for(var h in n){var d=h.split(".")[0],p=a&&(a[d]||a["*"]),m=s[d]||s["*"];p||m?c=c.concat((m||o)({key:(e?e+".":e)+h,value:n[h],valueSpec:p,style:l,styleSpec:u,object:n,objectKey:h})):""!==e&&1!==e.split(".").length&&c.push(new r(e,n[h],'unknown property "%s"',h))}for(d in a)a[d].required&&void 0===a[d].default&&void 0===n[d]&&c.push(new r(e,n,'missing required property "%s"',d));return c}},{"../error/validation_error":42,"../util/get_type":44,"./validate":46}],59:[function(t,e,n){"use strict";var r=t("./validate"),i=t("../error/validation_error");e.exports=function(t){var e=t.key,n=t.style,o=t.styleSpec,a=t.value,s=t.objectKey,l=o["paint_"+t.layerType];if(!l)return[];var u=s.match(/^(.*)-transition$/);return u&&l[u[1]]&&l[u[1]].transition?r({key:e,value:a,valueSpec:o.transition,style:n,styleSpec:o}):t.valueSpec||l[s]?r({key:t.key,value:a,valueSpec:t.valueSpec||l[s],style:n,styleSpec:o}):[new i(e,a,'unknown property "%s"',s)]}},{"../error/validation_error":42,"./validate":46}],60:[function(t,e,n){"use strict";var r=t("../error/validation_error"),i=t("../util/unbundle_jsonlint"),o=t("./validate_object"),a=t("./validate_enum");e.exports=function(t){var e=t.value,n=t.key,s=t.styleSpec,l=t.style;if(!e.type)return[new r(n,e,'"type" is required')];var u=i(e.type);switch(u){case"vector":case"raster":var c=[];if(c=c.concat(o({key:n,value:e,valueSpec:s.source_tile,style:t.style,styleSpec:s})),"url"in e)for(var f in e)["type","url","tileSize"].indexOf(f)<0&&c.push(new r(n+"."+f,e[f],'a source with a "url" property may not include a "%s" property',f));return c;case"geojson":return o({key:n,value:e,valueSpec:s.source_geojson,style:l,styleSpec:s});case"video":return o({key:n,value:e,valueSpec:s.source_video,style:l,styleSpec:s});case"image":return o({key:n,value:e,valueSpec:s.source_image,style:l,styleSpec:s});default:return a({key:n+".type",value:e.type,valueSpec:{values:["vector","raster","geojson","video","image"]},style:l,styleSpec:s})}}},{"../error/validation_error":42,"../util/unbundle_jsonlint":45,"./validate_enum":51,"./validate_object":58}],61:[function(t,e,n){"use strict";var r=t("../util/get_type"),i=t("../error/validation_error");e.exports=function(t){var e=t.value,n=t.key,o=r(e);return"string"!==o?[new i(n,e,"string expected, %s found",o)]:[]}},{"../error/validation_error":42,"../util/get_type":44}],62:[function(t,e,n){"use strict";function r(t,e){e=e||l;var n=[];return n=n.concat(s({key:"",value:t,valueSpec:e.$root,styleSpec:e,style:t,objectElementValidators:{glyphs:u}})),e.$version>7&&t.constants&&(n=n.concat(a({key:"constants",value:t.constants,style:t,styleSpec:e}))),i(n)}function i(t){return[].concat(t).sort(function(t,e){return t.line-e.line})}function o(t){return function(){return i(t.apply(this,arguments))}}var a=t("./validate/validate_constants"),s=t("./validate/validate"),l=t("../reference/latest.min"),u=t("./validate/validate_glyphs_url");r.source=o(t("./validate/validate_source")),r.layer=o(t("./validate/validate_layer")),r.filter=o(t("./validate/validate_filter")),r.paintProperty=o(t("./validate/validate_paint_property")),r.layoutProperty=o(t("./validate/validate_layout_property")),e.exports=r},{"../reference/latest.min":64,"./validate/validate":46,"./validate/validate_constants":50,"./validate/validate_filter":52,"./validate/validate_glyphs_url":54,"./validate/validate_layer":55,"./validate/validate_layout_property":56,"./validate/validate_paint_property":59,"./validate/validate_source":60}],63:[function(t,e,n){e.exports=t("./v8.json")},{"./v8.json":65}],64:[function(t,e,n){e.exports=t("./v8.min.json")},{"./v8.min.json":66}],65:[function(t,e,n){e.exports={$version:8,$root:{version:{required:!0,type:"enum",values:[8],doc:"Style specification version number. Must be 8.",example:8},name:{type:"string",doc:"A human-readable name for the style.",example:"Bright"},metadata:{type:"*",doc:"Arbitrary properties useful to track with the stylesheet, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."},center:{type:"array",value:"number",doc:"Default map center in longitude and latitude.  The style center will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:[-73.9749,40.7736]},zoom:{type:"number",doc:"Default zoom level.  The style zoom will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:12.5},bearing:{type:"number",default:0,period:360,units:"degrees",doc:"Default bearing, in degrees clockwise from true north.  The style bearing will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:29},pitch:{type:"number",default:0,units:"degrees",doc:"Default pitch, in degrees. Zero is perpendicular to the surface, for a look straight down at the map, while a greater value like 60 looks ahead towards the horizon. The style pitch will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:50},sources:{required:!0,type:"sources",doc:"Data source specifications.",example:{"mapbox-streets":{type:"vector",url:"mapbox://mapbox.mapbox-streets-v6"}}},sprite:{type:"string",doc:"A base URL for retrieving the sprite image and metadata. The extensions `.png`, `.json` and scale factor `@2x.png` will be automatically appended. This property is required if any layer uses the 'sprite-image' layout property.",example:"mapbox://sprites/mapbox/bright-v8"},glyphs:{type:"string",doc:"A URL template for loading signed-distance-field glyph sets in PBF format. The URL must include `{fontstack}` and `{range}` tokens. This property is required if any layer uses the 'text-field' layout property.",example:"mapbox://fonts/mapbox/{fontstack}/{range}.pbf"},transition:{type:"transition",doc:"A global transition definition to use as a default across properties.",example:{duration:300,delay:0}},layers:{required:!0,type:"array",value:"layer",doc:"Layers will be drawn in the order of this array.",example:[{id:"water",source:"mapbox-streets","source-layer":"water",type:"fill",paint:{"fill-color":"#00ffff"}}]}},sources:{"*":{type:"source",doc:"Specification of a data source. For vector and raster sources, either TileJSON or a URL to a TileJSON must be provided. For GeoJSON and video sources, a URL must be provided."}},source:["source_tile","source_geojson","source_video","source_image"],source_tile:{type:{required:!0,type:"enum",values:["vector","raster"],doc:"The data type of the tile source."},url:{type:"string",doc:"A URL to a TileJSON resource. Supported protocols are `http:`, `https:`, and `mapbox://<mapid>`."},tiles:{type:"array",value:"string",doc:"An array of one or more tile source URLs, as in the TileJSON spec."},minzoom:{type:"number",default:0,doc:"Minimum zoom level for which tiles are available, as in the TileJSON spec."},maxzoom:{type:"number",default:22,doc:"Maximum zoom level for which tiles are available, as in the TileJSON spec. Data from tiles at the maxzoom are used when displaying the map at higher zoom levels."},tileSize:{type:"number",default:512,units:"pixels",doc:"The minimum visual size to display tiles for this layer. Only configurable for raster layers."},"*":{type:"*",doc:"Other keys to configure the data source."}},source_geojson:{type:{required:!0,type:"enum",values:["geojson"],doc:"The data type of the GeoJSON source."},data:{type:"*",doc:"A URL to a GeoJSON file, or inline GeoJSON."},maxzoom:{type:"number",default:18,doc:"Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels)."},buffer:{type:"number",default:128,doc:"Tile buffer size on each side (measured in 1/512ths of a tile; higher means fewer rendering artifacts near tile edges but slower performance)."},tolerance:{type:"number",default:.375,doc:"Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance)."},cluster:{type:"boolean",default:!1,doc:"If the data is a collection of point features, setting this to true clusters the points by radius into groups."},clusterRadius:{type:"number",default:50,doc:"Radius of each cluster when clustering points, measured in 1/512ths of a tile."},clusterMaxZoom:{type:"number",doc:"Max zoom to cluster points on. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered)."}},source_video:{type:{required:!0,type:"enum",values:["video"],doc:"The data type of the video source."},urls:{required:!0,type:"array",value:"string",doc:"URLs to video content in order of preferred format."},coordinates:{required:!0,doc:"Corners of video specified in longitude, latitude pairs.",type:"array",length:4,value:{type:"array",length:2,value:"number",doc:"A single longitude, latitude pair."}}},source_image:{type:{required:!0,type:"enum",values:["image"],doc:"The data type of the image source."},url:{required:!0,type:"string",doc:"URL that points to an image"},coordinates:{required:!0,doc:"Corners of image specified in longitude, latitude pairs.",type:"array",length:4,value:{type:"array",length:2,value:"number",doc:"A single longitude, latitude pair."}}},layer:{id:{type:"string",doc:"Unique layer name.",required:!0},type:{type:"enum",values:["fill","line","symbol","circle","raster","background"],doc:"Rendering type of this layer."},metadata:{type:"*",doc:"Arbitrary properties useful to track with the layer, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."},ref:{type:"string",doc:"References another layer to copy `type`, `source`, `source-layer`, `minzoom`, `maxzoom`, `filter`, and `layout` properties from. This allows the layers to share processing and be more efficient."},source:{type:"string",doc:"Name of a source description to be used for this layer."},"source-layer":{type:"string",doc:"Layer to use from a vector tile source. Required if the source supports multiple layers."},minzoom:{type:"number",minimum:0,maximum:22,doc:"The minimum zoom level on which the layer gets parsed and appears on."},maxzoom:{type:"number",minimum:0,maximum:22,doc:"The maximum zoom level on which the layer gets parsed and appears on."},interactive:{type:"boolean",doc:"Enable querying of feature data from this layer for interactivity.",default:!1},filter:{type:"filter",doc:"A expression specifying conditions on source features. Only features that match the filter are displayed."},layout:{type:"layout",doc:"Layout properties for the layer."},paint:{type:"paint",doc:"Default paint properties for this layer."},"paint.*":{type:"paint",doc:"Class-specific paint properties for this layer. The class name is the part after the first dot."}},layout:["layout_fill","layout_line","layout_circle","layout_symbol","layout_raster","layout_background"],layout_background:{visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},layout_fill:{visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},layout_circle:{visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},layout_line:{"line-cap":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["butt","round","square"],default:"butt",doc:"The display of line endings.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-join":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["bevel","round","miter"],default:"miter",doc:"The display of lines when joining.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-miter-limit":{type:"number",default:2,function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Used to automatically convert miter joins to bevel joins for sharp angles.",requires:[{"line-join":"miter"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-round-limit":{type:"number",default:1.05,function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Used to automatically convert round joins to miter joins for shallow angles.",requires:[{"line-join":"round"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},layout_symbol:{"symbol-placement":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["point","line"],default:"point",doc:"Label placement relative to its geometry. `line` can only be used on LineStrings and Polygons.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"symbol-spacing":{type:"number",default:250,minimum:1,function:"interpolated","zoom-function":!0,"property-function":!0,units:"pixels",doc:"Distance between two symbol anchors.",requires:[{"symbol-placement":"line"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"symbol-avoid-edges":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-allow-overlap":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, the icon will be visible even if it collides with other previously drawn symbols.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-ignore-placement":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, other symbols can be visible even if they collide with the icon.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-optional":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.",requires:["icon-image","text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-rotation-alignment":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],default:"viewport",doc:"Orientation of icon when map is rotated.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-size":{type:"number",default:1,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Scale factor for icon. 1 is original size, 3 triples the size.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-text-fit":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!1,values:["none","both","width","height"],default:"none",doc:"Position and scale an icon by the its corresponding text.",requires:["icon-image","text-field"],"sdk-support":{basic:{js:"0.21.0"}}},"icon-text-fit-padding":{type:"array",value:"number",length:4,default:[0,0,0,0],units:"pixels",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Size of padding area around the text-fit size in clockwise order: top, right, bottom, left.",requires:["icon-image","icon-text-fit","text-field"],"sdk-support":{basic:{js:"0.21.0"}}},"icon-image":{type:"string",function:"piecewise-constant","zoom-function":!0,"property-function":!0,doc:"A string with {tokens} replaced, referencing the data property to pull from.",tokens:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-rotate":{type:"number",default:0,period:360,function:"interpolated","zoom-function":!0,"property-function":!0,units:"degrees",doc:"Rotates the icon clockwise.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.21.0"}}},"icon-padding":{type:"number",default:2,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,units:"pixels",doc:"Size of the additional area around the icon bounding box used for detecting symbol collisions.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-keep-upright":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, the icon may be flipped to prevent it from being rendered upside-down.",requires:["icon-image",{"icon-rotation-alignment":"map"},{"symbol-placement":"line"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-offset":{type:"array",value:"number",length:2,default:[0,0],function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-pitch-alignment":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],doc:"Aligns text to the plane of the `viewport` or the `map` when the map is pitched. Matches `text-rotation-alignment` if unspecified.",requires:["text-field"],"sdk-support":{basic:{js:"0.21.0"}}},"text-rotation-alignment":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],default:"viewport",doc:"Orientation of text when map is rotated.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-field":{type:"string",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:"",tokens:!0,doc:"Value to use for a text label. Feature properties are specified using tokens like {field_name}.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-font":{type:"array",value:"string",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:["Open Sans Regular","Arial Unicode MS Regular"],doc:"Font stack to use for displaying text.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",
++ios:"2.0.0",android:"2.0.1"}}},"text-size":{type:"number",default:16,minimum:0,units:"pixels",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Font size.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-max-width":{type:"number",default:10,minimum:0,units:"em",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"The maximum line width for text wrapping.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-line-height":{type:"number",default:1.2,units:"em",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Text leading value for multi-line text.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-letter-spacing":{type:"number",default:0,units:"em",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Text tracking amount.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-justify":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["left","center","right"],default:"center",doc:"Text justification options.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-anchor":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["center","left","right","top","bottom","top-left","top-right","bottom-left","bottom-right"],default:"center",doc:"Part of the text placed closest to the anchor.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-max-angle":{type:"number",default:45,units:"degrees",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Maximum angle change between adjacent characters.",requires:["text-field",{"symbol-placement":"line"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-rotate":{type:"number",default:0,period:360,units:"degrees",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Rotates the text clockwise.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-padding":{type:"number",default:2,minimum:0,units:"pixels",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Size of the additional area around the text bounding box used for detecting symbol collisions.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-keep-upright":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!0,doc:"If true, the text may be flipped vertically to prevent it from being rendered upside-down.",requires:["text-field",{"text-rotation-alignment":"map"},{"symbol-placement":"line"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-transform":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["none","uppercase","lowercase"],default:"none",doc:"Specifies how to capitalize text, similar to the CSS `text-transform` property.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-offset":{type:"array",doc:"Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up.",value:"number",units:"ems",function:"interpolated","zoom-function":!0,"property-function":!0,length:2,default:[0,0],requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-allow-overlap":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, the text will be visible even if it collides with other previously drawn symbols.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-ignore-placement":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, other symbols can be visible even if they collide with the text.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-optional":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not.",requires:["text-field","icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},layout_raster:{visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},filter:{type:"array",value:"*",doc:"A filter selects specific features from a layer."},filter_operator:{type:"enum",values:["==","!=",">",">=","<","<=","in","!in","all","any","none","has","!has"],doc:"The filter operator."},geometry_type:{type:"enum",values:["Point","LineString","Polygon"],doc:"The geometry type for the filter to select."},color_operation:{type:"enum",values:["lighten","saturate","spin","fade","mix"],doc:"A color operation to apply."},function:{stops:{type:"array",required:!0,doc:"An array of stops.",value:"function_stop"},base:{type:"number",default:1,minimum:0,doc:"The exponential base of the interpolation curve. It controls the rate at which the result increases. Higher values make the result increase more towards the high end of the range. With `1` the stops are interpolated linearly."},property:{type:"string",doc:"The name of a global property or feature property to use as the function input.",default:"$zoom"},type:{type:"enum",values:["exponential","interval","categorical"],doc:"The interpolation strategy to use in function evaluation.",default:"exponential"}},function_stop:{type:"array",minimum:0,maximum:22,value:["number","color"],length:2,doc:"Zoom level and value pair."},paint:["paint_fill","paint_line","paint_circle","paint_symbol","paint_raster","paint_background"],paint_fill:{"fill-antialias":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!0,doc:"Whether or not the fill should be antialiased.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"fill-opacity":{type:"number",function:"interpolated","zoom-function":!0,"property-function":!0,default:1,minimum:0,maximum:1,doc:"The opacity of the entire fill layer. In contrast to the fill-color, this value will also affect the 1px stroke around the fill, if the stroke is used.",transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.21.0"}}},"fill-color":{type:"color",default:"#000000",doc:"The color of the filled part of this layer. This color can be specified as rgba with an alpha component and the color's opacity will not affect the opacity of the 1px stroke, if it is used.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,requires:[{"!":"fill-pattern"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.19.0"}}},"fill-outline-color":{type:"color",doc:"The outline color of the fill. Matches the value of `fill-color` if unspecified.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,requires:[{"!":"fill-pattern"},{"fill-antialias":!0}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.19.0"}}},"fill-translate":{type:"array",value:"number",length:2,default:[0,0],function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"fill-translate-anchor":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen)",default:"map",requires:["fill-translate"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"fill-pattern":{type:"string",function:"piecewise-constant","zoom-function":!0,"property-function":!0,transition:!0,doc:"Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},paint_line:{"line-opacity":{type:"number",doc:"The opacity at which the line will be drawn.",function:"interpolated","zoom-function":!0,"property-function":!0,default:1,minimum:0,maximum:1,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-color":{type:"color",doc:"The color with which the line will be drawn.",default:"#000000",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,requires:[{"!":"line-pattern"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.23.0"}}},"line-translate":{type:"array",value:"number",length:2,default:[0,0],function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-translate-anchor":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen)",default:"map",requires:["line-translate"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-width":{type:"number",default:1,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Stroke thickness.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-gap-width":{type:"number",default:0,minimum:0,doc:"Draws a line casing outside of a line's actual path. Value indicates the width of the inner gap.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-offset":{type:"number",default:0,doc:"The line's offset. For linear features, a positive value offsets the line to the right, relative to the direction of the line, and a negative value to the left. For polygon features, a positive value results in an inset, and a negative value results in an outset.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels","sdk-support":{basic:{js:"0.12.1",ios:"3.1.0",android:"3.0.0"}}},"line-blur":{type:"number",default:0,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Blur applied to the line, in pixels.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-dasharray":{type:"array",value:"number",function:"piecewise-constant","zoom-function":!0,"property-function":!0,doc:"Specifies the lengths of the alternating dashes and gaps that form the dash pattern. The lengths are later scaled by the line width. To convert a dash length to pixels, multiply the length by the current line width.",minimum:0,transition:!0,units:"line widths",requires:[{"!":"line-pattern"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-pattern":{type:"string",function:"piecewise-constant","zoom-function":!0,"property-function":!0,transition:!0,doc:"Name of image in sprite to use for drawing image lines. For seamless patterns, image width must be a factor of two (2, 4, 8, ..., 512).","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},paint_circle:{"circle-radius":{type:"number",default:5,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Circle radius.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.18.0"}}},"circle-color":{type:"color",default:"#000000",doc:"The color of the circle.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.18.0"}}},"circle-blur":{type:"number",default:0,doc:"Amount to blur the circle. 1 blurs the circle such that only the centerpoint is full opacity.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.20.0"}}},"circle-opacity":{type:"number",doc:"The opacity at which the circle will be drawn.",default:1,minimum:0,maximum:1,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.20.0"}}},"circle-translate":{type:"array",value:"number",length:2,default:[0,0],function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"circle-translate-anchor":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen)",default:"map",requires:["circle-translate"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"circle-pitch-scale":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],default:"map",doc:"Controls the scaling behavior of the circle when the map is pitched. The value `map` scales circles according to their apparent distance to the camera. The value `viewport` results in no pitch-related scaling.","sdk-support":{basic:{js:"0.21.0"}}}},paint_symbol:{"icon-opacity":{doc:"The opacity at which the icon will be drawn.",type:"number",default:1,minimum:0,maximum:1,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-color":{type:"color",default:"#000000",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,doc:"The color of the icon. This can only be used with sdf icons.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-halo-color":{type:"color",default:"rgba(0, 0, 0, 0)",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,doc:"The color of the icon's halo. Icon halos can only be used with sdf icons.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-halo-width":{type:"number",default:0,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Distance of halo to the icon outline.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-halo-blur":{type:"number",default:0,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Fade out the halo towards the outside.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-translate":{type:"array",value:"number",length:2,default:[0,0],function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-translate-anchor":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen).",default:"map",requires:["icon-image","icon-translate"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-opacity":{type:"number",doc:"The opacity at which the text will be drawn.",default:1,minimum:0,maximum:1,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-color":{type:"color",doc:"The color with which the text will be drawn.",default:"#000000",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-halo-color":{type:"color",default:"rgba(0, 0, 0, 0)",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,doc:"The color of the text's halo, which helps it stand out from backgrounds.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-halo-width":{type:"number",default:0,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Distance of halo to the font outline. Max text halo width is 1/4 of the font-size.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-halo-blur":{type:"number",default:0,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"The halo's fadeout distance towards the outside.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-translate":{type:"array",value:"number",length:2,default:[0,0],function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-translate-anchor":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen).",default:"map",requires:["text-field","text-translate"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},paint_raster:{"raster-opacity":{type:"number",doc:"The opacity at which the image will be drawn.",default:1,minimum:0,maximum:1,function:"interpolated","zoom-function":!0,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"raster-hue-rotate":{type:"number",default:0,period:360,function:"interpolated","zoom-function":!0,transition:!0,units:"degrees",doc:"Rotates hues around the color wheel.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"raster-brightness-min":{type:"number",function:"interpolated","zoom-function":!0,doc:"Increase or reduce the brightness of the image. The value is the minimum brightness.",default:0,minimum:0,maximum:1,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"raster-brightness-max":{type:"number",function:"interpolated","zoom-function":!0,doc:"Increase or reduce the brightness of the image. The value is the maximum brightness.",default:1,minimum:0,maximum:1,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"raster-saturation":{type:"number",doc:"Increase or reduce the saturation of the image.",default:0,minimum:-1,maximum:1,function:"interpolated","zoom-function":!0,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"raster-contrast":{type:"number",doc:"Increase or reduce the contrast of the image.",default:0,minimum:-1,maximum:1,function:"interpolated","zoom-function":!0,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"raster-fade-duration":{type:"number",default:300,minimum:0,function:"interpolated","zoom-function":!0,transition:!0,units:"milliseconds",doc:"Fade duration when a new tile is added.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},paint_background:{"background-color":{type:"color",default:"#000000",doc:"The color with which the background will be drawn.",function:"interpolated","zoom-function":!0,transition:!0,requires:[{"!":"background-pattern"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"background-pattern":{type:"string",function:"piecewise-constant","zoom-function":!0,transition:!0,doc:"Name of image in sprite to use for drawing an image background. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"background-opacity":{type:"number",default:1,minimum:0,maximum:1,doc:"The opacity at which the background will be drawn.",function:"interpolated","zoom-function":!0,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},transition:{duration:{type:"number",default:300,minimum:0,units:"milliseconds",doc:"Time allotted for transitions to complete."},delay:{type:"number",default:0,minimum:0,units:"milliseconds",doc:"Length of time before a transition 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i=this.arrayTypes[t],o=i.layout.vertex,a=i.layout.element,s=i.layout.element2;r={index:n.length,layout:{},paint:{}},r.layout.vertex=new o,a&&(r.layout.element=new a),s&&(r.layout.element2=new s);for(var l=0;l<this.childLayers.length;l++){var u=this.childLayers[l].id,c=i.paint[u];r.paint[u]=new c}n.push(r)}return r},r.prototype.createArrays=function(){this.arrayGroups={},this.arrayTypes={};for(var t in this.programInterfaces){var e=this.programInterfaces[t],n=this.arrayTypes[t]={layout:{},paint:{}};if(this.arrayGroups[t]=[],e.vertexBuffer){var r=new f({members:this.programInterfaces[t].layoutAttributes,alignment:u.VERTEX_ATTRIBUTE_ALIGNMENT});n.layout.vertex=r;var o=this.paintAttributes[t];for(var a in o){var s=new f({members:o[a].attributes,alignment:u.VERTEX_ATTRIBUTE_ALIGNMENT});n.paint[a]=s}}if(e.elementBuffer){var l=i(e.elementBufferComponents);n.layout.element=l}if(e.elementBuffer2){var c=i(e.elementBuffer2Components);n.layout.element2=c}}},r.prototype.destroy=function(t){for(var e in this.bufferGroups)for(var n=this.bufferGroups[e],r=0;r<n.length;r++){var i=n[r];for(var o in i.paint)i.paint[o].destroy(t);for(var a in i.layout)i.layout[a].destroy(t);for(var s in i.vaos)i.vaos[s].destroy(t);for(var l in i.secondVaos)i.secondVaos[l].destroy(t)}},r.prototype.trimArrays=function(){for(var t in this.arrayGroups){var e=this.arrayGroups[t];for(var n in e.paint)e.paint[n].trim();for(var r in e.layout)e.layout[r].trim()}},r.prototype.setUniforms=function(t,e,n,r,i){for(var o=this.paintAttributes[e][r.id].uniforms,a=0;a<o.length;a++){var s=o[a],l=n[s.name];t["uniform"+s.components+"fv"](l,s.getValue(r,i))}},r.prototype.serialize=function(){return{layerId:this.layer.id,zoom:this.zoom,arrays:c.mapObject(this.arrayGroups,function(t){return t.map(function(t){return c.mapObject(t,function(t){return c.mapObject(t,function(t){return t.serialize()})})})}),arrayTypes:c.mapObject(this.arrayTypes,function(t){return c.mapObject(t,function(t){return c.mapObject(t,function(t){return t.serialize()})})}),childLayerIds:this.childLayers.map(function(t){return t.id})}},r.prototype.createFilter=function(){this.filter||(this.filter=l(this.layer.filter))};var d={lastIntegerZoom:1/0,lastIntegerZoomTime:0,lastZoom:0};r.prototype.recalculateStyleLayers=function(){for(var t=0;t<this.childLayers.length;t++)this.childLayers[t].recalculate(this.zoom,d)},r.prototype.getProgramMacros=function(t,e){for(var n=[],r=this.paintAttributes[t][e.id].attributes,i=0;i<r.length;i++){var o=r[i];n.push("ATTRIBUTE_"+(o.isFunction?"ZOOM_FUNCTION_":"")+o.name.toUpperCase())}return n},r.prototype.addPaintAttributes=function(t,e,n,r,i){for(var o=0;o<this.childLayers.length;o++)for(var a=this.childLayers[o],s=this.arrayGroups[t],l=r.index;l<s.length;l++){var u=s[l],c=u.layout.vertex.length,f=u.paint[a.id];f.resize(c);for(var h=this.paintAttributes[t][a.id].attributes,d=0;d<h.length;d++)for(var p=h[d],m=p.getValue(a,e,n),g=p.multiplier||1,v=p.components||1,y=i;y<c;y++)for(var x=f.get(y),b=0;b<v;b++){var _=v>1?p.name+b:p.name;x[_]=m[b]*g}}}},{"../render/vertex_array_object":93,"../util/struct_array":167,"../util/util":169,"./bucket/circle_bucket":68,"./bucket/fill_bucket":69,"./bucket/line_bucket":70,"./bucket/symbol_bucket":71,"./buffer":72,"feature-filter":12}],68:[function(t,e,n){"use strict";function r(){i.apply(this,arguments)}var i=t("../bucket"),o=t("../../util/util"),a=t("../load_geometry"),s=i.EXTENT;e.exports=r,r.prototype=o.inherit(i,{}),r.prototype.addCircleVertex=function(t,e,n,r,i){return t.emplaceBack(2*e+(r+1)/2,2*n+(i+1)/2)},r.prototype.programInterfaces={circle:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"}],paintAttributes:[{name:"a_color",components:4,type:"Uint8",getValue:function(t,e,n){return o.premultiply(t.getPaintValue("circle-color",e,n))},multiplier:255,paintProperty:"circle-color"},{name:"a_radius",components:1,type:"Uint16",isLayerConstant:!1,getValue:function(t,e,n){return[t.getPaintValue("circle-radius",e,n)]},multiplier:10,paintProperty:"circle-radius"}]}},r.prototype.addFeature=function(t){for(var e={zoom:this.zoom},n=a(t),r=this.makeRoomFor("circle",0),i=r.layout.vertex.length,o=0;o<n.length;o++)for(var l=0;l<n[o].length;l++){var u=n[o][l].x,c=n[o][l].y;if(!(u<0||u>=s||c<0||c>=s)){var f=this.makeRoomFor("circle",4),h=f.layout.vertex,d=this.addCircleVertex(h,u,c,-1,-1);this.addCircleVertex(h,u,c,1,-1),this.addCircleVertex(h,u,c,1,1),this.addCircleVertex(h,u,c,-1,1),f.layout.element.emplaceBack(d,d+1,d+2),f.layout.element.emplaceBack(d,d+3,d+2)}}this.addPaintAttributes("circle",e,t.properties,r,i)}},{"../../util/util":169,"../bucket":67,"../load_geometry":74}],69:[function(t,e,n){"use strict";function r(){i.apply(this,arguments)}var i=t("../bucket"),o=t("../../util/util"),a=t("../load_geometry");e.exports=r,r.prototype=o.inherit(i,{}),r.prototype.programInterfaces={fill:{vertexBuffer:!0,elementBuffer:!0,elementBuffer2:!0,elementBuffer2Components:2,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"}]}},r.prototype.addFeature=function(t){for(var e=a(t),n=0;n<e.length;n++)this.addFill(e[n])},r.prototype.addFill=function(t){if(!(t.length<3))for(var e,n,r=t.length,i=this.makeRoomFor("fill",r+1),o=0;o<t.length;o++){var a=t[o],s=i.layout.vertex.emplaceBack(a.x,a.y);0===o&&(e=s),o>=2&&(a.x!==t[0].x||a.y!==t[0].y)&&i.layout.element.emplaceBack(e,n,s),o>=1&&i.layout.element2.emplaceBack(n,s),n=s}}},{"../../util/util":169,"../bucket":67,"../load_geometry":74}],70:[function(t,e,n){"use strict";function r(){i.apply(this,arguments)}var i=t("../bucket"),o=t("../../util/util"),a=t("../load_geometry"),s=i.EXTENT,l=63,u=Math.cos(37.5*(Math.PI/180)),c=15,f=14,h=.5,d=Math.pow(2,f)/h;e.exports=r,r.prototype=o.inherit(i,{}),r.prototype.addLineVertex=function(t,e,n,r,i,o,a){return t.emplaceBack(e.x<<1|r,e.y<<1|i,Math.round(l*n.x)+128,Math.round(l*n.y)+128,(0===o?0:o<0?-1:1)+1|(a*h&63)<<2,a*h>>6)},r.prototype.programInterfaces={line:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"},{name:"a_data",components:4,type:"Uint8"}]}},r.prototype.addFeature=function(t){for(var e=a(t),n=0;n<e.length;n++)this.addLine(e[n],this.layer.layout["line-join"],this.layer.layout["line-cap"],this.layer.layout["line-miter-limit"],this.layer.layout["line-round-limit"])},r.prototype.addLine=function(t,e,n,r,i){for(var o=t.length;o>2&&t[o-1].equals(t[o-2]);)o--;if(!(t.length<2)){"bevel"===e&&(r=1.05);var a=c*(s/(512*this.overscaling)),l=t[0],f=t[o-1],h=l.equals(f);if(this.makeRoomFor("line",10*o),2!==o||!h){this.distance=0;var d,p,m,g,v,y,x,b=n,_=h?"butt":n,w=!0;this.e1=this.e2=this.e3=-1,h&&(d=t[o-2],v=l.sub(d)._unit()._perp());for(var M=0;M<o;M++)if(m=h&&M===o-1?t[1]:t[M+1],!m||!t[M].equals(m)){v&&(g=v),d&&(p=d),d=t[M],v=m?m.sub(d)._unit()._perp():g,g=g||v;var k=g.add(v)._unit(),S=k.x*v.x+k.y*v.y,T=1/S,A=S<u&&p&&m;if(A&&M>0){var z=d.dist(p);if(z>2*a){var E=d.sub(d.sub(p)._mult(a/z)._round());this.distance+=E.dist(p),this.addCurrentVertex(E,this.distance,g.mult(1),0,0,!1),p=E}}var L=p&&m,I=L?e:m?b:_;if(L&&"round"===I&&(T<i?I="miter":T<=2&&(I="fakeround")),"miter"===I&&T>r&&(I="bevel"),"bevel"===I&&(T>2&&(I="flipbevel"),T<r&&(I="miter")),p&&(this.distance+=d.dist(p)),"miter"===I)k._mult(T),this.addCurrentVertex(d,this.distance,k,0,0,!1);else if("flipbevel"===I){if(T>100)k=v.clone();else{var D=g.x*v.y-g.y*v.x>0?-1:1,P=T*g.add(v).mag()/g.sub(v).mag();k._perp()._mult(P*D)}this.addCurrentVertex(d,this.distance,k,0,0,!1),this.addCurrentVertex(d,this.distance,k.mult(-1),0,0,!1)}else if("bevel"===I||"fakeround"===I){var C=g.x*v.y-g.y*v.x>0,O=-Math.sqrt(T*T-1);if(C?(x=0,y=O):(y=0,x=O),w||this.addCurrentVertex(d,this.distance,g,y,x,!1),"fakeround"===I){for(var F,R=Math.floor(8*(.5-(S-.5))),j=0;j<R;j++)F=v.mult((j+1)/(R+1))._add(g)._unit(),this.addPieSliceVertex(d,this.distance,F,C);this.addPieSliceVertex(d,this.distance,k,C);for(var N=R-1;N>=0;N--)F=g.mult((N+1)/(R+1))._add(v)._unit(),this.addPieSliceVertex(d,this.distance,F,C)}m&&this.addCurrentVertex(d,this.distance,v,-y,-x,!1)}else"butt"===I?(w||this.addCurrentVertex(d,this.distance,g,0,0,!1),m&&this.addCurrentVertex(d,this.distance,v,0,0,!1)):"square"===I?(w||(this.addCurrentVertex(d,this.distance,g,1,1,!1),this.e1=this.e2=-1),m&&this.addCurrentVertex(d,this.distance,v,-1,-1,!1)):"round"===I&&(w||(this.addCurrentVertex(d,this.distance,g,0,0,!1),this.addCurrentVertex(d,this.distance,g,1,1,!0),this.e1=this.e2=-1),m&&(this.addCurrentVertex(d,this.distance,v,-1,-1,!0),this.addCurrentVertex(d,this.distance,v,0,0,!1)));if(A&&M<o-1){var B=d.dist(m);if(B>2*a){var q=d.add(m.sub(d)._mult(a/B)._round());this.distance+=q.dist(d),this.addCurrentVertex(q,this.distance,v.mult(1),0,0,!1),d=q}}w=!1}}}},r.prototype.addCurrentVertex=function(t,e,n,r,i,o){var a,s=o?1:0,l=this.arrayGroups.line[this.arrayGroups.line.length-1].layout,u=l.vertex,c=l.element;a=n.clone(),r&&a._sub(n.perp()._mult(r)),this.e3=this.addLineVertex(u,t,a,s,0,r,e),this.e1>=0&&this.e2>=0&&c.emplaceBack(this.e1,this.e2,this.e3),this.e1=this.e2,this.e2=this.e3,a=n.mult(-1),i&&a._sub(n.perp()._mult(i)),this.e3=this.addLineVertex(u,t,a,s,1,-i,e),this.e1>=0&&this.e2>=0&&c.emplaceBack(this.e1,this.e2,this.e3),this.e1=this.e2,this.e2=this.e3,e>d/2&&(this.distance=0,this.addCurrentVertex(t,this.distance,n,r,i,o))},r.prototype.addPieSliceVertex=function(t,e,n,r){var i=r?1:0;n=n.mult(r?-1:1);var o=this.arrayGroups.line[this.arrayGroups.line.length-1].layout,a=o.vertex,s=o.element;this.e3=this.addLineVertex(a,t,n,0,i,0,e),this.e1>=0&&this.e2>=0&&s.emplaceBack(this.e1,this.e2,this.e3),r?this.e2=this.e3:this.e1=this.e3}},{"../../util/util":169,"../bucket":67,"../load_geometry":74}],71:[function(t,e,n){"use strict";function r(t){s.apply(this,arguments),this.showCollisionBoxes=t.showCollisionBoxes,this.overscaling=t.overscaling,this.collisionBoxArray=t.collisionBoxArray,this.sdfIcons=t.sdfIcons,this.iconsNeedLinear=t.iconsNeedLinear,this.adjustedTextSize=t.adjustedTextSize,this.adjustedIconSize=t.adjustedIconSize,this.fontstack=t.fontstack}function i(t,e,n,r,i,o,a,s,l,u){return t.emplaceBack(e,n,Math.round(64*r),Math.round(64*i),o/4,a/4,10*(u||0),0,10*(s||0),10*Math.min(l||25,25))}function o(t,e,n,r,i,o,a,s,l,u,c,f,h,d,p,m,g){this.x=t.x,this.y=t.y,this.index=a,this.hasText=!!n,this.hasIcon=!!r,this.hasText&&(this.glyphQuads=o?_(t,n,f,e,i,d):[],this.textCollisionFeature=new y(s,e,t,l,u,c,n,f,h,d,!1)),this.hasIcon&&(this.iconQuads=o?w(t,r,p,e,i,g):[],this.iconCollisionFeature=new y(s,e,t,l,u,c,r,p,m,g,!0))}var a=t("point-geometry"),s=t("../bucket"),l=t("../../symbol/anchor"),u=t("../../symbol/get_anchors"),c=t("../../util/token"),f=t("../../symbol/quads"),h=t("../../symbol/shaping"),d=t("../../symbol/resolve_text"),p=t("../../symbol/mergelines"),m=t("../../symbol/clip_line"),g=t("../../util/util"),v=t("../load_geometry"),y=t("../../symbol/collision_feature"),x=h.shapeText,b=h.shapeIcon,_=f.getGlyphQuads,w=f.getIconQuads,M=s.EXTENT;e.exports=r,r.prototype=g.inherit(s,{}),r.prototype.serialize=function(){var t=s.prototype.serialize.apply(this);return t.sdfIcons=this.sdfIcons,t.iconsNeedLinear=this.iconsNeedLinear,t.adjustedTextSize=this.adjustedTextSize,t.adjustedIconSize=this.adjustedIconSize,t.fontstack=this.fontstack,t};var k=[{name:"a_pos",components:2,type:"Int16"},{name:"a_offset",components:2,type:"Int16"},{name:"a_data1",components:4,type:"Uint8"},{name:"a_data2",components:2,type:"Uint8"}];r.prototype.addCollisionBoxVertex=function(t,e,n,r,i){return t.emplaceBack(e.x,e.y,Math.round(n.x),Math.round(n.y),10*r,10*i)},r.prototype.programInterfaces={glyph:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:k},icon:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:k},collisionBox:{vertexBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"},{name:"a_extrude",components:2,type:"Int16"},{name:"a_data",components:2,type:"Uint8"}]}},r.prototype.populateBuffers=function(t,e,n){var r={lastIntegerZoom:1/0,lastIntegerZoomTime:0,lastZoom:0};this.adjustedTextMaxSize=this.layer.getLayoutValue("text-size",{zoom:18,zoomHistory:r}),this.adjustedTextSize=this.layer.getLayoutValue("text-size",{zoom:this.zoom+1,zoomHistory:r}),this.adjustedIconMaxSize=this.layer.getLayoutValue("icon-size",{zoom:18,zoomHistory:r}),this.adjustedIconSize=this.layer.getLayoutValue("icon-size",{zoom:this.zoom+1,zoomHistory:r});var i=512*this.overscaling;this.tilePixelRatio=M/i,this.compareText={},this.symbolInstances=[],this.iconsNeedLinear=!1;var o=this.layer.layout,a=this.features,s=this.textFeatures,l=.5,u=.5;switch(o["text-anchor"]){case"right":case"top-right":case"bottom-right":l=1;break;case"left":case"top-left":case"bottom-left":l=0}switch(o["text-anchor"]){case"bottom":case"bottom-right":case"bottom-left":u=1;break;case"top":case"top-right":case"top-left":u=0}for(var f="right"===o["text-justify"]?1:"left"===o["text-justify"]?0:.5,h=24,d=o["text-line-height"]*h,m="line"!==o["symbol-placement"]?o["text-max-width"]*h:0,g=o["text-letter-spacing"]*h,y=[o["text-offset"][0]*h,o["text-offset"][1]*h],_=this.fontstack=o["text-font"].join(","),w=[],k=0;k<a.length;k++)w.push(v(a[k]));if("line"===o["symbol-placement"]){var S=p(a,s,w);w=S.geometries,a=S.features,s=S.textFeatures}for(var T,A,z=0;z<a.length;z++)if(w[z]){if(T=s[z]?x(s[z],e[_],m,d,l,u,f,g,y):null,o["icon-image"]){var E=c(a[z].properties,o["icon-image"]),L=n[E];A=b(L,o),L&&(void 0===this.sdfIcons?this.sdfIcons=L.sdf:this.sdfIcons!==L.sdf&&console.warn("Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer"),1!==L.pixelRatio&&(this.iconsNeedLinear=!0))}else A=null;(T||A)&&this.addFeature(w[z],T,A,a[z].index)}this.placeFeatures(t,this.showCollisionBoxes),this.trimArrays()},r.prototype.addFeature=function(t,e,n,r){var i=this.layer.layout,a=24,s=this.adjustedTextSize/a,c=void 0!==this.adjustedTextMaxSize?this.adjustedTextMaxSize:this.adjustedTextSize,f=this.tilePixelRatio*s,h=this.tilePixelRatio*c/a,d=this.tilePixelRatio*this.adjustedIconSize,p=this.tilePixelRatio*i["symbol-spacing"],g=i["symbol-avoid-edges"],v=i["text-padding"]*this.tilePixelRatio,y=i["icon-padding"]*this.tilePixelRatio,x=i["text-max-angle"]/180*Math.PI,b="map"===i["text-rotation-alignment"]&&"line"===i["symbol-placement"],_="map"===i["icon-rotation-alignment"]&&"line"===i["symbol-placement"],w=i["text-allow-overlap"]||i["icon-allow-overlap"]||i["text-ignore-placement"]||i["icon-ignore-placement"],k="line"===i["symbol-placement"],S=p/2;k&&(t=m(t,0,0,M,M));for(var T=0;T<t.length;T++){var A,z=t[T];A=k?u(z,p,x,e,n,a,h,this.overscaling,M):[new l(z[0].x,z[0].y,0)];for(var E=0,L=A.length;E<L;E++){var I=A[E];if(!(e&&k&&this.anchorIsTooClose(e.text,S,I))){var D=!(I.x<0||I.x>M||I.y<0||I.y>M);if(!g||D){var P=D||w;this.symbolInstances.push(new o(I,z,e,n,i,P,this.symbolInstances.length,this.collisionBoxArray,r,this.sourceLayerIndex,this.index,f,v,b,d,y,_))}}}}},r.prototype.anchorIsTooClose=function(t,e,n){var r=this.compareText;if(t in r){for(var i=r[t],o=i.length-1;o>=0;o--)if(n.dist(i[o])<e)return!0}else r[t]=[];return r[t].push(n),!1},r.prototype.placeFeatures=function(t,e){this.recalculateStyleLayers(),this.createArrays();var n=this.layer.layout,r=t.maxScale,i="map"===n["text-rotation-alignment"]&&"line"===n["symbol-placement"],o="map"===n["icon-rotation-alignment"]&&"line"===n["symbol-placement"],a=n["text-allow-overlap"]||n["icon-allow-overlap"]||n["text-ignore-placement"]||n["icon-ignore-placement"];if(a){var s=t.angle,l=Math.sin(s),u=Math.cos(s);this.symbolInstances.sort(function(t,e){var n=l*t.x+u*t.y|0,r=l*e.x+u*e.y|0;return n-r||e.index-t.index})}for(var c=0;c<this.symbolInstances.length;c++){var f=this.symbolInstances[c],h=f.hasText,d=f.hasIcon,p=n["text-optional"]||!h,m=n["icon-optional"]||!d,g=h?t.placeCollisionFeature(f.textCollisionFeature,n["text-allow-overlap"],n["symbol-avoid-edges"]):t.minScale,v=d?t.placeCollisionFeature(f.iconCollisionFeature,n["icon-allow-overlap"],n["symbol-avoid-edges"]):t.minScale;p||m?!m&&g?g=Math.max(v,g):!p&&v&&(v=Math.max(v,g)):v=g=Math.max(v,g),h&&(t.insertCollisionFeature(f.textCollisionFeature,g,n["text-ignore-placement"]),g<=r&&this.addSymbols("glyph",f.glyphQuads,g,n["text-keep-upright"],i,t.angle)),d&&(t.insertCollisionFeature(f.iconCollisionFeature,v,n["icon-ignore-placement"]),v<=r&&this.addSymbols("icon",f.iconQuads,v,n["icon-keep-upright"],o,t.angle))}e&&this.addToDebugBuffers(t)},r.prototype.addSymbols=function(t,e,n,r,o,a){for(var s=this.makeRoomFor(t,4*e.length),l=s.layout.element,u=s.layout.vertex,c=this.zoom,f=Math.max(Math.log(n)/Math.LN2+c,0),h=0;h<e.length;h++){var d=e[h],p=d.angle,m=(p+a+Math.PI)%(2*Math.PI);if(!(r&&o&&(m<=Math.PI/2||m>3*Math.PI/2))){var g=d.tl,v=d.tr,y=d.bl,x=d.br,b=d.tex,_=d.anchorPoint,w=Math.max(c+Math.log(d.minScale)/Math.LN2,f),M=Math.min(c+Math.log(d.maxScale)/Math.LN2,25);if(!(M<=w)){w===f&&(w=0);var k=i(u,_.x,_.y,g.x,g.y,b.x,b.y,w,M,f);i(u,_.x,_.y,v.x,v.y,b.x+b.w,b.y,w,M,f),i(u,_.x,_.y,y.x,y.y,b.x,b.y+b.h,w,M,f),i(u,_.x,_.y,x.x,x.y,b.x+b.w,b.y+b.h,w,M,f),l.emplaceBack(k,k+1,k+2),l.emplaceBack(k+1,k+2,k+3)}}}},r.prototype.updateIcons=function(t){this.recalculateStyleLayers();var e=this.layer.layout["icon-image"];if(e)for(var n=0;n<this.features.length;n++){var r=c(this.features[n].properties,e);r&&(t[r]=!0)}},r.prototype.updateFont=function(t){this.recalculateStyleLayers();var e=this.layer.layout["text-font"],n=t[e]=t[e]||{};this.textFeatures=d(this.features,this.layer.layout,n)},r.prototype.addToDebugBuffers=function(t){for(var e=this.makeRoomFor("collisionBox",0),n=e.layout.vertex,r=-t.angle,i=t.yStretch,o=0;o<this.symbolInstances.length;o++)for(var s=0;s<2;s++){var l=this.symbolInstances[o][0===s?"textCollisionFeature":"iconCollisionFeature"];if(l)for(var u=l.boxStartIndex;u<l.boxEndIndex;u++){var c=this.collisionBoxArray.get(u),f=c.anchorPoint,h=new a(c.x1,c.y1*i)._rotate(r),d=new a(c.x2,c.y1*i)._rotate(r),p=new a(c.x1,c.y2*i)._rotate(r),m=new a(c.x2,c.y2*i)._rotate(r),g=Math.max(0,Math.min(25,this.zoom+Math.log(c.maxScale)/Math.LN2)),v=Math.max(0,Math.min(25,this.zoom+Math.log(c.placementScale)/Math.LN2));this.addCollisionBoxVertex(n,f,h,g,v),this.addCollisionBoxVertex(n,f,d,g,v),this.addCollisionBoxVertex(n,f,d,g,v),this.addCollisionBoxVertex(n,f,m,g,v),this.addCollisionBoxVertex(n,f,m,g,v),this.addCollisionBoxVertex(n,f,p,g,v),this.addCollisionBoxVertex(n,f,p,g,v),this.addCollisionBoxVertex(n,f,h,g,v)}}}},{"../../symbol/anchor":123,"../../symbol/clip_line":125,"../../symbol/collision_feature":127,"../../symbol/get_anchors":129,"../../symbol/mergelines":132,"../../symbol/quads":133,"../../symbol/resolve_text":134,"../../symbol/shaping":135,"../../util/token":168,"../../util/util":169,"../bucket":67,"../load_geometry":74,"point-geometry":174}],72:[function(t,e,n){"use strict";function r(t,e,n){this.arrayBuffer=t.arrayBuffer,this.length=t.length,this.attributes=e.members,this.itemSize=e.bytesPerElement,this.type=n,this.arrayType=e}var i=t("assert");e.exports=r,r.prototype.bind=function(t){var e=t[this.type];this.buffer?t.bindBuffer(e,this.buffer):(this.buffer=t.createBuffer(),t.bindBuffer(e,this.buffer),t.bufferData(e,this.arrayBuffer,t.STATIC_DRAW),this.arrayBuffer=null)};var o={Int8:"BYTE",Uint8:"UNSIGNED_BYTE",Int16:"SHORT",Uint16:"UNSIGNED_SHORT"};r.prototype.setVertexAttribPointers=function(t,e){for(var n=0;n<this.attributes.length;n++){var r=this.attributes[n],a=e[r.name];i(void 0!==a,'array member "'+r.name+'" name does not match shader attribute name'),t.vertexAttribPointer(a,r.components,t[o[r.type]],!1,this.arrayType.bytesPerElement,r.offset)}},r.prototype.destroy=function(t){this.buffer&&t.deleteBuffer(this.buffer)},r.BufferType={VERTEX:"ARRAY_BUFFER",ELEMENT:"ELEMENT_ARRAY_BUFFER"},r.ELEMENT_ATTRIBUTE_TYPE="Uint16",r.VERTEX_ATTRIBUTE_ALIGNMENT=4},{assert:6}],73:[function(t,e,n){"use strict";function r(t,e,n){if(t.grid){var r=t,i=e;t=r.coord,e=r.overscaling,this.grid=new p(r.grid),this.featureIndexArray=new k(r.featureIndexArray),this.rawTileData=i,this.bucketLayerIDs=r.bucketLayerIDs}else this.grid=new p(f,16,0),this.featureIndexArray=new k;this.coord=t,this.overscaling=e,this.x=t.x,this.y=t.y,this.z=t.z-Math.log(e)/Math.LN2,this.setCollisionTile(n)}function i(t){return Math.sqrt(t[0]*t[0]+t[1]*t[1])}function o(t,e){return e-t}function a(t){return t["line-gap-width"]>0?t["line-gap-width"]+2*t["line-width"]:t["line-width"]}function s(t,e,n,r,i){if(!e[0]&&!e[1])return t;e=u.convert(e),"viewport"===n&&e._rotate(-r);for(var o=[],a=0;a<t.length;a++){for(var s=t[a],l=[],c=0;c<s.length;c++)l.push(s[c].sub(e._mult(i)));o.push(l)}return o}function l(t,e){for(var n=[],r=new u(0,0),i=0;i<t.length;i++){for(var o=t[i],a=[],s=0;s<o.length;s++){var l=o[s-1],c=o[s],f=o[s+1],h=0===s?r:c.sub(l)._unit()._perp(),d=s===o.length-1?r:f.sub(c)._unit()._perp(),p=h._add(d)._unit(),m=p.x*d.x+p.y*d.y;p._mult(1/m),a.push(p._mult(e)._add(c))}n.push(a)}return n}var u=t("point-geometry"),c=t("./load_geometry"),f=t("./bucket").EXTENT,h=t("feature-filter"),d=t("../util/struct_array"),p=t("grid-index"),m=t("../util/dictionary_coder"),g=t("vector-tile"),v=t("pbf"),y=t("../util/vectortile_to_geojson"),x=t("../util/util").arraysIntersect,b=t("../util/intersection_tests"),_=b.multiPolygonIntersectsBufferedMultiPoint,w=b.multiPolygonIntersectsMultiPolygon,M=b.multiPolygonIntersectsBufferedMultiLine,k=new d({members:[{type:"Uint32",name:"featureIndex"},{type:"Uint16",name:"sourceLayerIndex"},{type:"Uint16",name:"bucketIndex"}]});e.exports=r,r.prototype.insert=function(t,e,n,r){var i=this.featureIndexArray.length;this.featureIndexArray.emplaceBack(e,n,r);for(var o=c(t),a=0;a<o.length;a++){for(var s=o[a],l=[1/0,1/0,-(1/0),-(1/0)],u=0;u<s.length;u++){var f=s[u];l[0]=Math.min(l[0],f.x),l[1]=Math.min(l[1],f.y),l[2]=Math.max(l[2],f.x),l[3]=Math.max(l[3],f.y)}this.grid.insert(i,l[0],l[1],l[2],l[3])}},r.prototype.setCollisionTile=function(t){this.collisionTile=t},r.prototype.serialize=function(){var t={coord:this.coord,overscaling:this.overscaling,grid:this.grid.toArrayBuffer(),featureIndexArray:this.featureIndexArray.serialize(),bucketLayerIDs:this.bucketLayerIDs};return{data:t,transferables:[t.grid,t.featureIndexArray.arrayBuffer]
++}},r.prototype.query=function(t,e){this.vtLayers||(this.vtLayers=new g.VectorTile(new v(new Uint8Array(this.rawTileData))).layers,this.sourceLayerCoder=new m(this.vtLayers?Object.keys(this.vtLayers).sort():["_geojsonTileLayer"]));var n={},r=t.params||{},s=f/t.tileSize/t.scale,l=h(r.filter),c=0;for(var d in e){var p=e[d],y=p.paint,x=0;"line"===p.type?x=a(y)/2+Math.abs(y["line-offset"])+i(y["line-translate"]):"fill"===p.type?x=i(y["fill-translate"]):"circle"===p.type&&(x=y["circle-radius"]+i(y["circle-translate"])),c=Math.max(c,x*s)}for(var b=t.queryGeometry.map(function(t){return t.map(function(t){return new u(t.x,t.y)})}),_=1/0,w=1/0,M=-(1/0),k=-(1/0),S=0;S<b.length;S++)for(var T=b[S],A=0;A<T.length;A++){var z=T[A];_=Math.min(_,z.x),w=Math.min(w,z.y),M=Math.max(M,z.x),k=Math.max(k,z.y)}var E=this.grid.query(_-c,w-c,M+c,k+c);E.sort(o),this.filterMatching(n,E,this.featureIndexArray,b,l,r.layers,e,t.bearing,s);var L=this.collisionTile.queryRenderedSymbols(_,w,M,k,t.scale);return L.sort(),this.filterMatching(n,L,this.collisionTile.collisionBoxArray,b,l,r.layers,e,t.bearing,s),n},r.prototype.filterMatching=function(t,e,n,r,i,o,u,f,h){for(var d,p=0;p<e.length;p++){var m=e[p];if(m!==d){d=m;var g=n.get(m),v=this.bucketLayerIDs[g.bucketIndex];if(!o||x(o,v)){var b=this.sourceLayerCoder.decode(g.sourceLayerIndex),k=this.vtLayers[b],S=k.feature(g.featureIndex);if(i(S))for(var T=null,A=0;A<v.length;A++){var z=v[A];if(!(o&&o.indexOf(z)<0)){var E=u[z];if(E){var L;if("symbol"!==E.type){T||(T=c(S));var I=E.paint;if("line"===E.type){L=s(r,I["line-translate"],I["line-translate-anchor"],f,h);var D=a(I)/2*h;if(I["line-offset"]&&(T=l(T,I["line-offset"]*h)),!M(L,T,D))continue}else if("fill"===E.type){if(L=s(r,I["fill-translate"],I["fill-translate-anchor"],f,h),!w(L,T))continue}else if("circle"===E.type){L=s(r,I["circle-translate"],I["circle-translate-anchor"],f,h);var P=I["circle-radius"]*h;if(!_(L,T,P))continue}}var C=new y(S,this.z,this.x,this.y);C.layer=E.serialize({includeRefProperties:!0});var O=t[z];void 0===O&&(O=t[z]=[]),O.push(C)}}}}}}}},{"../util/dictionary_coder":160,"../util/intersection_tests":164,"../util/struct_array":167,"../util/util":169,"../util/vectortile_to_geojson":170,"./bucket":67,"./load_geometry":74,"feature-filter":12,"grid-index":34,pbf:173,"point-geometry":174,"vector-tile":184}],74:[function(t,e,n){"use strict";var r=t("./bucket").EXTENT,i=r*-2,o=2*r-1,a=!1;e.exports=function(t){for(var e=r/t.extent,n=t.loadGeometry(),s=0;s<n.length;s++)for(var l=n[s],u=0;u<l.length;u++){var c=l[u];c.x=Math.round(c.x*e),c.y=Math.round(c.y*e),a===!1&&(c.x<i||c.x>o||c.y<i||c.y>o)&&(console.warn("Geometry exceeds allowed extent, reduce your vector tile buffer size"),a=!0)}return n}},{"./bucket":67}],75:[function(t,e,n){"use strict";function r(t,e,n){this.column=t,this.row=e,this.zoom=n}e.exports=r,r.prototype={clone:function(){return new r(this.column,this.row,this.zoom)},zoomTo:function(t){return this.clone()._zoomTo(t)},sub:function(t){return this.clone()._sub(t)},_zoomTo:function(t){var e=Math.pow(2,t-this.zoom);return this.column*=e,this.row*=e,this.zoom=t,this},_sub:function(t){return t=t.zoomTo(this.zoom),this.column-=t.column,this.row-=t.row,this}}},{}],76:[function(t,e,n){"use strict";function r(t,e){if(isNaN(t)||isNaN(e))throw new Error("Invalid LngLat object: ("+t+", "+e+")");if(this.lng=+t,this.lat=+e,this.lat>90||this.lat<-90)throw new Error("Invalid LngLat latitude value: must be between -90 and 90")}e.exports=r;var i=t("../util/util").wrap;r.prototype.wrap=function(){return new r(i(this.lng,-180,180),this.lat)},r.prototype.toArray=function(){return[this.lng,this.lat]},r.prototype.toString=function(){return"LngLat("+this.lng+", "+this.lat+")"},r.convert=function(t){return t instanceof r?t:Array.isArray(t)?new r(t[0],t[1]):t}},{"../util/util":169}],77:[function(t,e,n){"use strict";function r(t,e){t&&(e?this.extend(t).extend(e):4===t.length?this.extend([t[0],t[1]]).extend([t[2],t[3]]):this.extend(t[0]).extend(t[1]))}e.exports=r;var i=t("./lng_lat");r.prototype={extend:function(t){var e,n,o=this._sw,a=this._ne;if(t instanceof i)e=t,n=t;else{if(!(t instanceof r))return t?this.extend(i.convert(t)||r.convert(t)):this;if(e=t._sw,n=t._ne,!e||!n)return this}return o||a?(o.lng=Math.min(e.lng,o.lng),o.lat=Math.min(e.lat,o.lat),a.lng=Math.max(n.lng,a.lng),a.lat=Math.max(n.lat,a.lat)):(this._sw=new i(e.lng,e.lat),this._ne=new i(n.lng,n.lat)),this},getCenter:function(){return new i((this._sw.lng+this._ne.lng)/2,(this._sw.lat+this._ne.lat)/2)},getSouthWest:function(){return this._sw},getNorthEast:function(){return this._ne},getNorthWest:function(){return new i(this.getWest(),this.getNorth())},getSouthEast:function(){return new i(this.getEast(),this.getSouth())},getWest:function(){return this._sw.lng},getSouth:function(){return this._sw.lat},getEast:function(){return this._ne.lng},getNorth:function(){return this._ne.lat},toArray:function(){return[this._sw.toArray(),this._ne.toArray()]},toString:function(){return"LngLatBounds("+this._sw.toString()+", "+this._ne.toString()+")"}},r.convert=function(t){return!t||t instanceof r?t:new r(t)}},{"./lng_lat":76}],78:[function(t,e,n){"use strict";function r(t,e){this.tileSize=512,this._minZoom=t||0,this._maxZoom=e||22,this.latRange=[-85.05113,85.05113],this.width=0,this.height=0,this._center=new i(0,0),this.zoom=0,this.angle=0,this._altitude=1.5,this._pitch=0,this._unmodified=!0}var i=t("./lng_lat"),o=t("point-geometry"),a=t("./coordinate"),s=t("../util/util").wrap,l=t("../util/interpolate"),u=t("../source/tile_coord"),c=t("../data/bucket").EXTENT,f=t("gl-matrix"),h=f.vec4,d=f.mat4,p=f.mat2;e.exports=r,r.prototype={get minZoom(){return this._minZoom},set minZoom(t){this._minZoom!==t&&(this._minZoom=t,this.zoom=Math.max(this.zoom,t))},get maxZoom(){return this._maxZoom},set maxZoom(t){this._maxZoom!==t&&(this._maxZoom=t,this.zoom=Math.min(this.zoom,t))},get worldSize(){return this.tileSize*this.scale},get centerPoint(){return this.size._div(2)},get size(){return new o(this.width,this.height)},get bearing(){return-this.angle/Math.PI*180},set bearing(t){var e=-s(t,-180,180)*Math.PI/180;this.angle!==e&&(this._unmodified=!1,this.angle=e,this._calcProjMatrix(),this.rotationMatrix=p.create(),p.rotate(this.rotationMatrix,this.rotationMatrix,this.angle))},get pitch(){return this._pitch/Math.PI*180},set pitch(t){var e=Math.min(60,t)/180*Math.PI;this._pitch!==e&&(this._unmodified=!1,this._pitch=e,this._calcProjMatrix())},get altitude(){return this._altitude},set altitude(t){var e=Math.max(.75,t);this._altitude!==e&&(this._unmodified=!1,this._altitude=e,this._calcProjMatrix())},get zoom(){return this._zoom},set zoom(t){var e=Math.min(Math.max(t,this.minZoom),this.maxZoom);this._zoom!==e&&(this._unmodified=!1,this._zoom=e,this.scale=this.zoomScale(e),this.tileZoom=Math.floor(e),this.zoomFraction=e-this.tileZoom,this._calcProjMatrix(),this._constrain())},get center(){return this._center},set center(t){t.lat===this._center.lat&&t.lng===this._center.lng||(this._unmodified=!1,this._center=t,this._calcProjMatrix(),this._constrain())},resize:function(t,e){this.width=t,this.height=e,this.pixelsToGLUnits=[2/t,-2/e],this._calcProjMatrix(),this._constrain()},get unmodified(){return this._unmodified},zoomScale:function(t){return Math.pow(2,t)},scaleZoom:function(t){return Math.log(t)/Math.LN2},project:function(t,e){return new o(this.lngX(t.lng,e),this.latY(t.lat,e))},unproject:function(t,e){return new i(this.xLng(t.x,e),this.yLat(t.y,e))},get x(){return this.lngX(this.center.lng)},get y(){return this.latY(this.center.lat)},get point(){return new o(this.x,this.y)},lngX:function(t,e){return(180+t)*(e||this.worldSize)/360},latY:function(t,e){var n=180/Math.PI*Math.log(Math.tan(Math.PI/4+t*Math.PI/360));return(180-n)*(e||this.worldSize)/360},xLng:function(t,e){return 360*t/(e||this.worldSize)-180},yLat:function(t,e){var n=180-360*t/(e||this.worldSize);return 360/Math.PI*Math.atan(Math.exp(n*Math.PI/180))-90},panBy:function(t){var e=this.centerPoint._add(t);this.center=this.pointLocation(e)},setLocationAtPoint:function(t,e){var n=this.locationCoordinate(t),r=this.pointCoordinate(e),i=this.pointCoordinate(this.centerPoint),o=r._sub(n);this._unmodified=!1,this.center=this.coordinateLocation(i._sub(o))},locationPoint:function(t){return this.coordinatePoint(this.locationCoordinate(t))},pointLocation:function(t){return this.coordinateLocation(this.pointCoordinate(t))},locationCoordinate:function(t){var e=this.zoomScale(this.tileZoom)/this.worldSize,n=i.convert(t);return new a(this.lngX(n.lng)*e,this.latY(n.lat)*e,this.tileZoom)},coordinateLocation:function(t){var e=this.zoomScale(t.zoom);return new i(this.xLng(t.column,e),this.yLat(t.row,e))},pointCoordinate:function(t){var e=0,n=this.coordinatePointMatrix(this.tileZoom);if(d.invert(n,n),!n)throw new Error("failed to invert matrix");var r=[t.x,t.y,0,1],i=[t.x,t.y,1,1];h.transformMat4(r,r,n),h.transformMat4(i,i,n);var o=r[3],s=i[3],u=r[0]/o,c=i[0]/s,f=r[1]/o,p=i[1]/s,m=r[2]/o,g=i[2]/s,v=m===g?0:(e-m)/(g-m);return new a(l(u,c,v),l(f,p,v),this.tileZoom)},coordinatePoint:function(t){var e=this.coordinatePointMatrix(t.zoom),n=[t.column,t.row,0,1];return h.transformMat4(n,n,e),new o(n[0]/n[3],n[1]/n[3])},coordinatePointMatrix:function(t){var e=d.copy(new Float64Array(16),this.projMatrix),n=this.worldSize/this.zoomScale(t);return d.scale(e,e,[n,n,1]),d.multiply(e,this.getPixelMatrix(),e),e},getPixelMatrix:function(){var t=d.create();return d.scale(t,t,[this.width/2,-this.height/2,1]),d.translate(t,t,[1,-1,0]),t},calculatePosMatrix:function(t,e){void 0===e&&(e=1/0),t instanceof u&&(t=t.toCoordinate(e));var n=Math.min(t.zoom,e),r=this.worldSize/Math.pow(2,n),i=new Float64Array(16);return d.identity(i),d.translate(i,i,[t.column*r,t.row*r,0]),d.scale(i,i,[r/c,r/c,1]),d.multiply(i,this.projMatrix,i),new Float32Array(i)},_constrain:function(){if(this.center&&this.width&&this.height&&!this._constraining){this._constraining=!0;var t,e,n,r,i,a,s,l,u=this.size,c=this._unmodified;this.latRange&&(t=this.latY(this.latRange[1]),e=this.latY(this.latRange[0]),i=e-t<u.y?u.y/(e-t):0),this.lngRange&&(n=this.lngX(this.lngRange[0]),r=this.lngX(this.lngRange[1]),a=r-n<u.x?u.x/(r-n):0);var f=Math.max(a||0,i||0);if(f)return this.center=this.unproject(new o(a?(r+n)/2:this.x,i?(e+t)/2:this.y)),this.zoom+=this.scaleZoom(f),this._unmodified=c,void(this._constraining=!1);if(this.latRange){var h=this.y,d=u.y/2;h-d<t&&(l=t+d),h+d>e&&(l=e-d)}if(this.lngRange){var p=this.x,m=u.x/2;p-m<n&&(s=n+m),p+m>r&&(s=r-m)}void 0===s&&void 0===l||(this.center=this.unproject(new o(void 0!==s?s:this.x,void 0!==l?l:this.y))),this._unmodified=c,this._constraining=!1}},_calcProjMatrix:function(){var t=new Float64Array(16),e=Math.atan(.5/this.altitude),n=Math.sin(e)*this.altitude/Math.sin(Math.PI/2-this._pitch-e),r=Math.cos(Math.PI/2-this._pitch)*n+this.altitude;d.perspective(t,2*Math.atan(this.height/2/this.altitude),this.width/this.height,.1,r),d.translate(t,t,[0,0,-this.altitude]),d.scale(t,t,[1,-1,1/this.height]),d.rotateX(t,t,this._pitch),d.rotateZ(t,t,this.angle),d.translate(t,t,[-this.x,-this.y,0]),this.projMatrix=t}}},{"../data/bucket":67,"../source/tile_coord":101,"../util/interpolate":163,"../util/util":169,"./coordinate":75,"./lng_lat":76,"gl-matrix":24,"point-geometry":174}],79:[function(t,e,n){"use strict";var r={" 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o,a,s,l,u,c,f,h,d=[];for(o=0,a=t.length;o<a;o++)if(u=r[t[o]]){for(h=null,s=0,l=u[1].length;s<l;s+=2)u[1][s]===-1&&u[1][s+1]===-1?h=null:(c=e+u[1][s]*i,f=n-u[1][s+1]*i,h&&d.push(h.x,h.y,c,f),h={x:c,y:f});e+=u[0]*i}return d}},{}],80:[function(t,e,n){"use strict";var r=e.exports={};r.Map=t("./ui/map"),r.Control=t("./ui/control/control"),r.Navigation=t("./ui/control/navigation"),r.Geolocate=t("./ui/control/geolocate"),r.Attribution=t("./ui/control/attribution"),r.Popup=t("./ui/popup"),r.GeoJSONSource=t("./source/geojson_source"),r.VideoSource=t("./source/video_source"),r.ImageSource=t("./source/image_source"),r.Style=t("./style/style"),r.LngLat=t("./geo/lng_lat"),r.LngLatBounds=t("./geo/lng_lat_bounds"),r.Point=t("point-geometry"),r.Evented=t("./util/evented"),r.util=t("./util/util"),r.supported=t("./util/browser").supported;var i=t("./util/ajax");r.util.getJSON=i.getJSON,r.util.getArrayBuffer=i.getArrayBuffer;var o=t("./util/config");r.config=o,Object.defineProperty(r,"accessToken",{get:function(){return o.ACCESS_TOKEN},set:function(t){o.ACCESS_TOKEN=t}})},{"./geo/lng_lat":76,"./geo/lng_lat_bounds":77,"./source/geojson_source":94,"./source/image_source":96,"./source/video_source":104,"./style/style":110,"./ui/control/attribution":138,"./ui/control/control":139,"./ui/control/geolocate":140,"./ui/control/navigation":141,"./ui/map":151,"./ui/popup":152,"./util/ajax":154,"./util/browser":155,"./util/config":159,"./util/evented":161,"./util/util":169,"point-geometry":174}],81:[function(t,e,n){"use strict";function r(t,e,n){var r,i=t.gl,l=t.transform,u=a.premultiply(n.paint["background-color"]),c=n.paint["background-pattern"],f=n.paint["background-opacity"],h=c?t.spriteAtlas.getPosition(c.from,!0):null,d=c?t.spriteAtlas.getPosition(c.to,!0):null;if(t.setDepthSublayer(0),h&&d){if(t.isOpaquePass)return;r=t.useProgram("pattern"),i.uniform1i(r.u_image,0),i.uniform2fv(r.u_pattern_tl_a,h.tl),i.uniform2fv(r.u_pattern_br_a,h.br),i.uniform2fv(r.u_pattern_tl_b,d.tl),i.uniform2fv(r.u_pattern_br_b,d.br),i.uniform1f(r.u_opacity,f),i.uniform1f(r.u_mix,c.t),t.spriteAtlas.bind(i,!0),t.tileExtentPatternVAO.bind(i,r,t.tileExtentBuffer)}else{if(t.isOpaquePass!==(1===u[3]))return;r=t.useProgram("fill"),i.uniform4fv(r.u_color,u),i.uniform1f(r.u_opacity,f),t.tileExtentVAO.bind(i,r,t.tileExtentBuffer)}i.disable(i.STENCIL_TEST);for(var p=o.coveringTiles(l),m=0;m<p.length;m++){var g=p[m],v=512;if(h&&d){var y=[h.size[0]*c.fromScale,h.size[1]*c.fromScale],x=[d.size[0]*c.toScale,d.size[1]*c.toScale],b={coord:g,tileSize:v};i.uniform2fv(r.u_patternscale_a,[1/s(b,y[0],t.transform.tileZoom),1/s(b,y[1],t.transform.tileZoom)]),i.uniform2fv(r.u_patternscale_b,[1/s(b,x[0],t.transform.tileZoom),1/s(b,x[1],t.transform.tileZoom)]);var _=v*Math.pow(2,t.transform.tileZoom-g.z),w=_/y[0]%1*(g.x+g.w*Math.pow(2,g.z)),M=_/y[1]%1*g.y,k=_/x[0]%1*(g.x+g.w*Math.pow(2,g.z)),S=_/x[1]%1*g.y;i.uniform2fv(r.u_offset_a,[w,M]),i.uniform2fv(r.u_offset_b,[k,S])}i.uniformMatrix4fv(r.u_matrix,!1,t.transform.calculatePosMatrix(g)),i.drawArrays(i.TRIANGLE_STRIP,0,t.tileExtentBuffer.length)}i.stencilMask(0),i.stencilFunc(i.EQUAL,128,128)}var i=t("../source/tile_pyramid"),o=new i({tileSize:512}),a=t("../util/util"),s=t("../source/pixels_to_tile_units");e.exports=r},{"../source/pixels_to_tile_units":97,"../source/tile_pyramid":102,"../util/util":169}],82:[function(t,e,n){"use strict";function r(t,e,n,r){if(!t.isOpaquePass){var o=t.gl;t.setDepthSublayer(0),t.depthMask(!1),o.disable(o.STENCIL_TEST);for(var a=0;a<r.length;a++){var s=r[a],l=e.getTile(s),u=l.getBucket(n);if(u){var c=u.bufferGroups.circle;if(c){var f=t.useProgram("circle",u.getProgramMacros("circle",n));o.uniform2fv(f.u_extrude_scale,t.transform.pixelsToGLUnits),o.uniform1f(f.u_blur,n.paint["circle-blur"]),o.uniform1f(f.u_devicepixelratio,i.devicePixelRatio),o.uniform1f(f.u_opacity,n.paint["circle-opacity"]),o.uniformMatrix4fv(f.u_matrix,!1,t.translatePosMatrix(s.posMatrix,l,n.paint["circle-translate"],n.paint["circle-translate-anchor"])),u.setUniforms(o,"circle",f,n,{zoom:t.transform.zoom});for(var h=0;h<c.length;h++){var d=c[h];d.vaos[n.id].bind(o,f,d.layout.vertex,d.layout.element,d.paint[n.id]),o.drawElements(o.TRIANGLES,3*d.layout.element.length,o.UNSIGNED_SHORT,0)}}}}}}var i=t("../util/browser");e.exports=r},{"../util/browser":155}],83:[function(t,e,n){"use strict";function r(t,e,n,r){var i=t.gl;i.enable(i.STENCIL_TEST);for(var o=t.useProgram("collisionbox"),a=0;a<r.length;a++){var s=r[a],l=e.getTile(s),u=l.getBucket(n);if(u){var c=u.bufferGroups.collisionBox;if(c&&c.length){var f=c[0];0!==f.layout.vertex.length&&(i.uniformMatrix4fv(o.u_matrix,!1,s.posMatrix),t.enableTileClippingMask(s),t.lineWidth(1),i.uniform1f(o.u_scale,Math.pow(2,t.transform.zoom-l.coord.z)),i.uniform1f(o.u_zoom,10*t.transform.zoom),i.uniform1f(o.u_maxzoom,10*(l.coord.z+1)),f.vaos[n.id].bind(i,o,f.layout.vertex),i.drawArrays(i.LINES,0,f.layout.vertex.length))}}}}e.exports=r},{}],84:[function(t,e,n){"use strict";function r(t,e,n){if(!t.isOpaquePass&&t.options.debug)for(var r=0;r<n.length;r++)i(t,e,n[r])}function i(t,e,n){var r=t.gl;r.disable(r.STENCIL_TEST),t.lineWidth(1*a.devicePixelRatio);var i=n.posMatrix,f=t.useProgram("debug");r.uniformMatrix4fv(f.u_matrix,!1,i),r.uniform4f(f.u_color,1,0,0,1),t.debugVAO.bind(r,f,t.debugBuffer),r.drawArrays(r.LINE_STRIP,0,t.debugBuffer.length);for(var h=o(n.toString(),50,200,5),d=new t.PosArray,p=0;p<h.length;p+=2)d.emplaceBack(h[p],h[p+1]);var m=new u(d.serialize(),t.PosArray.serialize(),u.BufferType.VERTEX),g=new c;g.bind(r,f,m),r.uniform4f(f.u_color,1,1,1,1);for(var v=e.getTile(n).tileSize,y=l/(Math.pow(2,t.transform.zoom-n.z)*v),x=[[-1,-1],[-1,1],[1,-1],[1,1]],b=0;b<x.length;b++){var _=x[b];r.uniformMatrix4fv(f.u_matrix,!1,s.translate([],i,[y*_[0],y*_[1],0])),r.drawArrays(r.LINES,0,m.length)}r.uniform4f(f.u_color,0,0,0,1),r.uniformMatrix4fv(f.u_matrix,!1,i),r.drawArrays(r.LINES,0,m.length)}var o=t("../lib/debugtext"),a=t("../util/browser"),s=t("gl-matrix").mat4,l=t("../data/bucket").EXTENT,u=t("../data/buffer"),c=t("./vertex_array_object");e.exports=r},{"../data/bucket":67,"../data/buffer":72,"../lib/debugtext":79,"../util/browser":155,"./vertex_array_object":93,"gl-matrix":24}],85:[function(t,e,n){"use strict";function r(t,e,n,r){var a=t.gl;a.enable(a.STENCIL_TEST);var l=s.premultiply(n.paint["fill-color"]),u=n.paint["fill-pattern"],c=s.premultiply(n.paint["fill-outline-color"]),f=n.paint["fill-opacity"];if(u?!t.isOpaquePass:t.isOpaquePass===(1===l[3]&&1===f))for(var h=0;h<r.length;h++)i(t,e,n,r[h]);if(!t.isOpaquePass&&n.paint["fill-antialias"])if(c||!n.paint["fill-pattern"]){var d=t.useProgram("outline");t.lineWidth(2),t.depthMask(!1),c?t.setDepthSublayer(2):t.setDepthSublayer(0),a.uniform2f(d.u_world,a.drawingBufferWidth,a.drawingBufferHeight),a.uniform4fv(d.u_color,c?c:l),a.uniform1f(d.u_opacity,f);for(var p=0;p<r.length;p++)o(t,e,n,r[p])}else{var m=t.useProgram("outlinepattern");t.lineWidth(2),t.depthMask(!1),t.setDepthSublayer(0),a.uniform2f(m.u_world,a.drawingBufferWidth,a.drawingBufferHeight);for(var g=0;g<r.length;g++)o(t,e,n,r[g])}}function i(t,e,n,r){var i=e.getTile(r),o=i.getBucket(n);if(o){var l=o.bufferGroups.fill;if(l){var u=t.gl,c=s.premultiply(n.paint["fill-color"]),f=n.paint["fill-pattern"],h=n.paint["fill-opacity"],d=r.posMatrix,p=t.translatePosMatrix(d,i,n.paint["fill-translate"],n.paint["fill-translate-anchor"]);t.setDepthSublayer(1),u.stencilMask(7),u.clear(u.STENCIL_BUFFER_BIT),t.enableTileClippingMask(r),u.stencilOpSeparate(u.FRONT,u.KEEP,u.KEEP,u.INCR_WRAP),u.stencilOpSeparate(u.BACK,u.KEEP,u.KEEP,u.DECR_WRAP),u.colorMask(!1,!1,!1,!1),t.depthMask(!1);var m=t.useProgram("fill");u.uniformMatrix4fv(m.u_matrix,!1,p);for(var g=0;g<l.length;g++){var v=l[g];v.vaos[n.id].bind(u,m,v.layout.vertex,v.layout.element),u.drawElements(u.TRIANGLES,3*v.layout.element.length,u.UNSIGNED_SHORT,0)}u.colorMask(!0,!0,!0,!0),t.depthMask(!0),u.stencilOp(u.KEEP,u.KEEP,u.KEEP),u.stencilMask(0);var y;f?(y=t.useProgram("pattern"),a(f,h,i,r,t,y),u.activeTexture(u.TEXTURE0),t.spriteAtlas.bind(u,!0),t.tileExtentPatternVAO.bind(u,y,t.tileExtentBuffer)):(y=t.useProgram("fill"),u.uniform4fv(m.u_color,c),u.uniform1f(m.u_opacity,h),t.tileExtentVAO.bind(u,y,t.tileExtentBuffer)),u.uniformMatrix4fv(y.u_matrix,!1,d),u.stencilFunc(u.NOTEQUAL,0,7),u.drawArrays(u.TRIANGLE_STRIP,0,t.tileExtentBuffer.length),u.stencilMask(0)}}}function o(t,e,n,r){var i=e.getTile(r),o=i.getBucket(n);if(o){var s=t.gl,l=o.bufferGroups.fill,u=n.paint["fill-pattern"],c=n.paint["fill-opacity"],f=u?t.useProgram("outlinepattern"):t.useProgram("outline");s.uniformMatrix4fv(f.u_matrix,!1,t.translatePosMatrix(r.posMatrix,i,n.paint["fill-translate"],n.paint["fill-translate-anchor"])),u&&a(u,c,i,r,t,f),t.enableTileClippingMask(r);for(var h=0;h<l.length;h++){var d=l[h];d.secondVaos[n.id].bind(s,f,d.layout.vertex,d.layout.element2),s.drawElements(s.LINES,2*d.layout.element2.length,s.UNSIGNED_SHORT,0)}}}function a(t,e,n,r,i,o){var a=i.gl,s=i.spriteAtlas.getPosition(t.from,!0),u=i.spriteAtlas.getPosition(t.to,!0);if(s&&u){a.uniform1i(o.u_image,0),a.uniform2fv(o.u_pattern_tl_a,s.tl),a.uniform2fv(o.u_pattern_br_a,s.br),a.uniform2fv(o.u_pattern_tl_b,u.tl),a.uniform2fv(o.u_pattern_br_b,u.br),a.uniform1f(o.u_opacity,e),a.uniform1f(o.u_mix,t.t);var c=[s.size[0]*t.fromScale,s.size[1]*t.fromScale],f=[u.size[0]*t.toScale,u.size[1]*t.toScale];a.uniform2fv(o.u_patternscale_a,[1/l(n,c[0],i.transform.tileZoom),1/l(n,c[1],i.transform.tileZoom)]),a.uniform2fv(o.u_patternscale_b,[1/l(n,f[0],i.transform.tileZoom),1/l(n,f[1],i.transform.tileZoom)]);var h=n.tileSize*Math.pow(2,i.transform.tileZoom-n.coord.z),d=h/c[0]%1*(n.coord.x+r.w*Math.pow(2,n.coord.z)),p=h/c[1]%1*n.coord.y,m=h/f[0]%1*(n.coord.x+r.w*Math.pow(2,n.coord.z)),g=h/f[1]%1*n.coord.y;a.uniform2fv(o.u_offset_a,[d,p]),a.uniform2fv(o.u_offset_b,[m,g]),a.activeTexture(a.TEXTURE0),i.spriteAtlas.bind(a,!0)}}var s=t("../util/util"),l=t("../source/pixels_to_tile_units");e.exports=r},{"../source/pixels_to_tile_units":97,"../util/util":169}],86:[function(t,e,n){"use strict";var r=t("../util/browser"),i=t("gl-matrix").mat2,o=t("../util/util"),a=t("../source/pixels_to_tile_units");e.exports=function(t,e,n,s){if(!t.isOpaquePass){t.setDepthSublayer(0),t.depthMask(!1);var l=t.gl;if(l.enable(l.STENCIL_TEST),!(n.paint["line-width"]<=0)){var u=1/r.devicePixelRatio,c=n.paint["line-blur"]+u,f=n.paint["line-width"]/2,h=-1,d=0,p=0;n.paint["line-gap-width"]>0&&(h=n.paint["line-gap-width"]/2+.5*u,f=n.paint["line-width"],d=h-u/2);var m=d+f+u/2+p,g=o.premultiply(n.paint["line-color"]),v=t.transform,y=i.create();i.scale(y,y,[1,Math.cos(v._pitch)]),i.rotate(y,y,t.transform.angle);var x,b,_,w,M,k=Math.sqrt(v.height*v.height/4*(1+v.altitude*v.altitude)),S=v.height/2*Math.tan(v._pitch),T=(k+S)/k-1,A=n.paint["line-dasharray"],z=n.paint["line-pattern"];if(A)x=t.useProgram("linesdfpattern"),l.uniform2fv(x.u_linewidth,[m,h]),l.uniform1f(x.u_blur,c),l.uniform4fv(x.u_color,g),l.uniform1f(x.u_opacity,n.paint["line-opacity"]),b=t.lineAtlas.getDash(A.from,"round"===n.layout["line-cap"]),_=t.lineAtlas.getDash(A.to,"round"===n.layout["line-cap"]),l.uniform1i(x.u_image,0),l.activeTexture(l.TEXTURE0),t.lineAtlas.bind(l),l.uniform1f(x.u_tex_y_a,b.y),l.uniform1f(x.u_tex_y_b,_.y),l.uniform1f(x.u_mix,A.t),l.uniform1f(x.u_extra,T),l.uniform1f(x.u_offset,-n.paint["line-offset"]),l.uniformMatrix2fv(x.u_antialiasingmatrix,!1,y);else if(z){if(w=t.spriteAtlas.getPosition(z.from,!0),M=t.spriteAtlas.getPosition(z.to,!0),!w||!M)return;x=t.useProgram("linepattern"),l.uniform1i(x.u_image,0),l.activeTexture(l.TEXTURE0),t.spriteAtlas.bind(l,!0),l.uniform2fv(x.u_linewidth,[m,h]),l.uniform1f(x.u_blur,c),l.uniform2fv(x.u_pattern_tl_a,w.tl),l.uniform2fv(x.u_pattern_br_a,w.br),l.uniform2fv(x.u_pattern_tl_b,M.tl),l.uniform2fv(x.u_pattern_br_b,M.br),l.uniform1f(x.u_fade,z.t),l.uniform1f(x.u_opacity,n.paint["line-opacity"]),l.uniform1f(x.u_extra,T),l.uniform1f(x.u_offset,-n.paint["line-offset"]),l.uniformMatrix2fv(x.u_antialiasingmatrix,!1,y)}else x=t.useProgram("line"),l.uniform2fv(x.u_linewidth,[m,h]),l.uniform1f(x.u_blur,c),l.uniform1f(x.u_extra,T),l.uniform1f(x.u_offset,-n.paint["line-offset"]),l.uniformMatrix2fv(x.u_antialiasingmatrix,!1,y),l.uniform4fv(x.u_color,g),l.uniform1f(x.u_opacity,n.paint["line-opacity"]);for(var E=0;E<s.length;E++){var L=s[E],I=e.getTile(L),D=I.getBucket(n);if(D){var P=D.bufferGroups.line;if(P){t.enableTileClippingMask(L);var C=t.translatePosMatrix(L.posMatrix,I,n.paint["line-translate"],n.paint["line-translate-anchor"]);l.uniformMatrix4fv(x.u_matrix,!1,C);var O=1/a(I,1,t.transform.zoom);if(A){var F=b.width*A.fromScale,R=_.width*A.toScale,j=[1/a(I,F,t.transform.tileZoom),-b.height/2],N=[1/a(I,R,t.transform.tileZoom),-_.height/2],B=t.lineAtlas.width/(256*Math.min(F,R)*r.devicePixelRatio)/2;l.uniform1f(x.u_ratio,O),l.uniform2fv(x.u_patternscale_a,j),l.uniform2fv(x.u_patternscale_b,N),l.uniform1f(x.u_sdfgamma,B)}else z?(l.uniform1f(x.u_ratio,O),l.uniform2fv(x.u_pattern_size_a,[a(I,w.size[0]*z.fromScale,t.transform.tileZoom),M.size[1]]),l.uniform2fv(x.u_pattern_size_b,[a(I,M.size[0]*z.toScale,t.transform.tileZoom),M.size[1]])):l.uniform1f(x.u_ratio,O);for(var q=0;q<P.length;q++){var V=P[q];V.vaos[n.id].bind(l,x,V.layout.vertex,V.layout.element),l.drawElements(l.TRIANGLES,3*V.layout.element.length,l.UNSIGNED_SHORT,0)}}}}}}}},{"../source/pixels_to_tile_units":97,"../util/browser":155,"../util/util":169,"gl-matrix":24}],87:[function(t,e,n){"use strict";function r(t,e,n,r){if(!t.isOpaquePass){var o=t.gl;o.enable(o.DEPTH_TEST),t.depthMask(!0),o.depthFunc(o.LESS);for(var a=r.length&&r[0].z,s=0;s<r.length;s++){var l=r[s];t.setDepthSublayer(l.z-a),
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h,d,p=u.source&&u.source._pyramid.findLoadedParent(r,0,{}),m=l(u,p,n,t.transform);i.activeTexture(i.TEXTURE0),i.bindTexture(i.TEXTURE_2D,u.texture),p?(i.activeTexture(i.TEXTURE1),i.bindTexture(i.TEXTURE_2D,p.texture),h=Math.pow(2,p.coord.z-u.coord.z),d=[u.coord.x*h%1,u.coord.y*h%1]):m[1]=0,i.uniform2fv(f.u_tl_parent,d||[0,0]),i.uniform1f(f.u_scale_parent,h||1),i.uniform1f(f.u_buffer_scale,1),i.uniform1f(f.u_opacity0,m[0]),i.uniform1f(f.u_opacity1,m[1]),i.uniform1i(f.u_image0,0),i.uniform1i(f.u_image1,1);var g=u.boundsBuffer||t.rasterBoundsBuffer,v=u.boundsVAO||t.rasterBoundsVAO;v.bind(i,f,g),i.drawArrays(i.TRIANGLE_STRIP,0,g.length)}function o(t){t*=Math.PI/180;var e=Math.sin(t),n=Math.cos(t);return[(2*n+1)/3,(-Math.sqrt(3)*e-n+1)/3,(Math.sqrt(3)*e-n+1)/3]}function a(t){return t>0?1/(1-t):1+t}function s(t){return t>0?1-1/(1.001-t):-t}function l(t,e,n,r){var i=[1,0],o=n.paint["raster-fade-duration"];if(t.source&&o>0){var a=(new Date).getTime(),s=(a-t.timeAdded)/o,l=e?(a-e.timeAdded)/o:-1,c=t.source._pyramid.coveringZoomLevel(r),f=!!e&&Math.abs(e.coord.z-c)>Math.abs(t.coord.z-c);!e||f?(i[0]=u.clamp(s,0,1),i[1]=1-i[0]):(i[0]=u.clamp(1-l,0,1),i[1]=1-i[0])}var h=n.paint["raster-opacity"];return i[0]*=h,i[1]*=h,i}var u=t("../util/util"),c=t("../util/struct_array");e.exports=r,r.RasterBoundsArray=new c({members:[{name:"a_pos",type:"Int16",components:2},{name:"a_texture_pos",type:"Int16",components:2}]})},{"../util/struct_array":167,"../util/util":169}],88:[function(t,e,n){"use strict";function r(t,e,n,r){if(!t.isOpaquePass){var o=!(n.layout["text-allow-overlap"]||n.layout["icon-allow-overlap"]||n.layout["text-ignore-placement"]||n.layout["icon-ignore-placement"]),a=t.gl;o?a.disable(a.STENCIL_TEST):a.enable(a.STENCIL_TEST),t.setDepthSublayer(0),t.depthMask(!1),a.disable(a.DEPTH_TEST),i(t,e,n,r,!1,n.paint["icon-translate"],n.paint["icon-translate-anchor"],n.layout["icon-rotation-alignment"],n.layout["icon-size"],n.paint["icon-halo-width"],n.paint["icon-halo-color"],n.paint["icon-halo-blur"],n.paint["icon-opacity"],n.paint["icon-color"]),i(t,e,n,r,!0,n.paint["text-translate"],n.paint["text-translate-anchor"],n.layout["text-rotation-alignment"],n.layout["text-size"],n.paint["text-halo-width"],n.paint["text-halo-color"],n.paint["text-halo-blur"],n.paint["text-opacity"],n.paint["text-color"]),a.enable(a.DEPTH_TEST),s(t,e,n,r)}}function i(t,e,n,r,i,a,s,u,c,f,h,d,p,m){h=l.premultiply(h),m=l.premultiply(m);for(var g=0;g<r.length;g++){var v=e.getTile(r[g]),y=v.getBucket(n);if(y){var x=y.bufferGroups,b=i?x.glyph:x.icon;b.length&&(t.enableTileClippingMask(r[g]),o(t,n,r[g].posMatrix,v,y,b,i,i||y.sdfIcons,!i&&y.iconsNeedLinear,i?y.adjustedTextSize:y.adjustedIconSize,y.fontstack,a,s,u,c,f,h,d,p,m))}}}function o(t,e,n,r,i,o,s,l,c,f,h,d,p,m,g,v,y,x,b,_){var w,M,k,S=t.gl,T=t.transform,A="map"===m,z=s?24:1,E=g/z;A?(M=u(r,1,t.transform.zoom)*E,k=1/Math.cos(T._pitch),w=[M,M]):(M=t.transform.altitude*E,k=1,w=[T.pixelsToGLUnits[0]*M,T.pixelsToGLUnits[1]*M]);var L=Math.sqrt(T.height*T.height/4*(1+T.altitude*T.altitude)),I=T.height/2*Math.tan(T._pitch),D=(L+I)/L-1;if(s||t.style.sprite.loaded()){var P=t.useProgram(l?"sdf":"icon");if(S.uniformMatrix4fv(P.u_matrix,!1,t.translatePosMatrix(n,r,d,p)),S.uniform1i(P.u_skewed,A),S.uniform1f(P.u_extra,D),S.uniform2fv(P.u_extrude_scale,w),S.activeTexture(S.TEXTURE0),S.uniform1i(P.u_texture,0),s){var C=h&&t.glyphSource.getGlyphAtlas(h);if(!C)return;C.updateTexture(S),S.uniform2f(P.u_texsize,C.width/4,C.height/4)}else{var O=t.options.rotating||t.options.zooming,F=1!==E||a.devicePixelRatio!==t.spriteAtlas.pixelRatio||c,R=A||t.transform.pitch;t.spriteAtlas.bind(S,l||O||F||R),S.uniform2f(P.u_texsize,t.spriteAtlas.width/4,t.spriteAtlas.height/4)}var j=Math.log(g/f)/Math.LN2||0;S.uniform1f(P.u_zoom,10*(t.transform.zoom-j)),S.activeTexture(S.TEXTURE1),t.frameHistory.bind(S),S.uniform1i(P.u_fadetexture,1);var N;if(l){var B=8,q=1.19,V=6,U=.105*z/g/a.devicePixelRatio;if(v){S.uniform1f(P.u_gamma,(x*q/E/B+U)*k),S.uniform4fv(P.u_color,y),S.uniform1f(P.u_opacity,b),S.uniform1f(P.u_buffer,(V-v/E)/B);for(var Z=0;Z<o.length;Z++)N=o[Z],N.vaos[e.id].bind(S,P,N.layout.vertex,N.layout.element),S.drawElements(S.TRIANGLES,3*N.layout.element.length,S.UNSIGNED_SHORT,0)}S.uniform1f(P.u_gamma,U*k),S.uniform4fv(P.u_color,_),S.uniform1f(P.u_opacity,b),S.uniform1f(P.u_buffer,.75);for(var H=0;H<o.length;H++)N=o[H],N.vaos[e.id].bind(S,P,N.layout.vertex,N.layout.element),S.drawElements(S.TRIANGLES,3*N.layout.element.length,S.UNSIGNED_SHORT,0)}else{S.uniform1f(P.u_opacity,b);for(var G=0;G<o.length;G++)N=o[G],N.vaos[e.id].bind(S,P,N.layout.vertex,N.layout.element),S.drawElements(S.TRIANGLES,3*N.layout.element.length,S.UNSIGNED_SHORT,0)}}}var a=t("../util/browser"),s=t("./draw_collision_debug"),l=t("../util/util"),u=t("../source/pixels_to_tile_units");e.exports=r},{"../source/pixels_to_tile_units":97,"../util/browser":155,"../util/util":169,"./draw_collision_debug":83}],89:[function(t,e,n){"use strict";function r(){this.changeTimes=new Float64Array(256),this.changeOpacities=new Uint8Array(256),this.opacities=new Uint8ClampedArray(256),this.array=new Uint8Array(this.opacities.buffer),this.fadeDuration=300,this.previousZoom=0,this.firstFrame=!0}e.exports=r,r.prototype.record=function(t){var e=Date.now();this.firstFrame&&(e=0,this.firstFrame=!1),t=Math.floor(10*t);var n;if(t<this.previousZoom)for(n=t+1;n<=this.previousZoom;n++)this.changeTimes[n]=e,this.changeOpacities[n]=this.opacities[n];else for(n=t;n>this.previousZoom;n--)this.changeTimes[n]=e,this.changeOpacities[n]=this.opacities[n];for(n=0;n<256;n++){var r=e-this.changeTimes[n],i=r/this.fadeDuration*255;n<=t?this.opacities[n]=this.changeOpacities[n]+i:this.opacities[n]=this.changeOpacities[n]-i}this.changed=!0,this.previousZoom=t},r.prototype.bind=function(t){this.texture?(t.bindTexture(t.TEXTURE_2D,this.texture),this.changed&&(t.texSubImage2D(t.TEXTURE_2D,0,0,0,256,1,t.ALPHA,t.UNSIGNED_BYTE,this.array),this.changed=!1)):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.NEAREST),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.NEAREST),t.texImage2D(t.TEXTURE_2D,0,t.ALPHA,256,1,0,t.ALPHA,t.UNSIGNED_BYTE,this.array))}},{}],90:[function(t,e,n){"use strict";function r(t,e){this.width=t,this.height=e,this.nextRow=0,this.bytes=4,this.data=new Uint8Array(this.width*this.height*this.bytes),this.positions={}}e.exports=r,r.prototype.setSprite=function(t){this.sprite=t},r.prototype.getDash=function(t,e){var n=t.join(",")+e;return this.positions[n]||(this.positions[n]=this.addDash(t,e)),this.positions[n]},r.prototype.addDash=function(t,e){var n=e?7:0,r=2*n+1,i=128;if(this.nextRow+r>this.height)return console.warn("LineAtlas out of space"),null;for(var o=0,a=0;a<t.length;a++)o+=t[a];for(var s=this.width/o,l=s/2,u=t.length%2===1,c=-n;c<=n;c++)for(var f=this.nextRow+n+c,h=this.width*f,d=u?-t[t.length-1]:0,p=t[0],m=1,g=0;g<this.width;g++){for(;p<g/s;)d=p,p+=t[m],u&&m===t.length-1&&(p+=t[0]),m++;var v,y=Math.abs(g-d*s),x=Math.abs(g-p*s),b=Math.min(y,x),_=m%2===1;if(e){var w=n?c/n*(l+1):0;if(_){var M=l-Math.abs(w);v=Math.sqrt(b*b+M*M)}else v=l-Math.sqrt(b*b+w*w)}else v=(_?1:-1)*b;this.data[3+4*(h+g)]=Math.max(0,Math.min(255,v+i))}var k={y:(this.nextRow+n+.5)/this.height,height:2*n/this.height,width:o};return this.nextRow+=r,this.dirty=!0,k},r.prototype.bind=function(t){this.texture?(t.bindTexture(t.TEXTURE_2D,this.texture),this.dirty&&(this.dirty=!1,t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width,this.height,t.RGBA,t.UNSIGNED_BYTE,this.data))):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.REPEAT),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.REPEAT),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texImage2D(t.TEXTURE_2D,0,t.RGBA,this.width,this.height,0,t.RGBA,t.UNSIGNED_BYTE,this.data))}},{}],91:[function(t,e,n){"use strict";function r(t,e){this.gl=t,this.transform=e,this.reusableTextures={},this.preFbos={},this.frameHistory=new a,this.setup(),this.numSublayers=s.maxUnderzooming+s.maxOverzooming+1,this.depthEpsilon=1/Math.pow(2,16),this.lineWidthRange=t.getParameter(t.ALIASED_LINE_WIDTH_RANGE)}var i=t("../util/browser"),o=t("gl-matrix").mat4,a=t("./frame_history"),s=t("../source/tile_pyramid"),l=t("../data/bucket").EXTENT,u=t("../source/pixels_to_tile_units"),c=t("../util/util"),f=t("../util/struct_array"),h=t("../data/buffer"),d=t("./vertex_array_object"),p=t("./draw_raster").RasterBoundsArray;e.exports=r,c.extend(r.prototype,t("./painter/use_program")),r.prototype.resize=function(t,e){var n=this.gl;this.width=t*i.devicePixelRatio,this.height=e*i.devicePixelRatio,n.viewport(0,0,this.width,this.height)},r.prototype.setup=function(){var t=this.gl;t.verbose=!0,t.enable(t.BLEND),t.blendFunc(t.ONE,t.ONE_MINUS_SRC_ALPHA),t.enable(t.STENCIL_TEST),t.enable(t.DEPTH_TEST),t.depthFunc(t.LEQUAL),this._depthMask=!1,t.depthMask(!1);var e=this.PosArray=new f({members:[{name:"a_pos",type:"Int16",components:2}]}),n=new e;n.emplaceBack(0,0),n.emplaceBack(l,0),n.emplaceBack(0,l),n.emplaceBack(l,l),this.tileExtentBuffer=new h(n.serialize(),e.serialize(),h.BufferType.VERTEX),this.tileExtentVAO=new d,this.tileExtentPatternVAO=new d;var r=new e;r.emplaceBack(0,0),r.emplaceBack(l,0),r.emplaceBack(l,l),r.emplaceBack(0,l),r.emplaceBack(0,0),this.debugBuffer=new h(r.serialize(),e.serialize(),h.BufferType.VERTEX),this.debugVAO=new d;var i=new p;i.emplaceBack(0,0,0,0),i.emplaceBack(l,0,32767,0),i.emplaceBack(0,l,0,32767),i.emplaceBack(l,l,32767,32767),this.rasterBoundsBuffer=new h(i.serialize(),p.serialize(),h.BufferType.VERTEX),this.rasterBoundsVAO=new d},r.prototype.clearColor=function(){var t=this.gl;t.clearColor(0,0,0,0),t.clear(t.COLOR_BUFFER_BIT)},r.prototype.clearStencil=function(){var t=this.gl;t.clearStencil(0),t.stencilMask(255),t.clear(t.STENCIL_BUFFER_BIT)},r.prototype.clearDepth=function(){var t=this.gl;t.clearDepth(1),this.depthMask(!0),t.clear(t.DEPTH_BUFFER_BIT)},r.prototype._renderTileClippingMasks=function(t){var e=this.gl;e.colorMask(!1,!1,!1,!1),this.depthMask(!1),e.disable(e.DEPTH_TEST),e.enable(e.STENCIL_TEST),e.stencilMask(248),e.stencilOp(e.KEEP,e.KEEP,e.REPLACE);var n=1;this._tileClippingMaskIDs={};for(var r=0;r<t.length;r++){var i=t[r],o=this._tileClippingMaskIDs[i.id]=n++<<3;e.stencilFunc(e.ALWAYS,o,248);var a=this.useProgram("fill");e.uniformMatrix4fv(a.u_matrix,!1,i.posMatrix),this.tileExtentVAO.bind(e,a,this.tileExtentBuffer),e.drawArrays(e.TRIANGLE_STRIP,0,this.tileExtentBuffer.length)}e.stencilMask(0),e.colorMask(!0,!0,!0,!0),this.depthMask(!0),e.enable(e.DEPTH_TEST)},r.prototype.enableTileClippingMask=function(t){var e=this.gl;e.stencilFunc(e.EQUAL,this._tileClippingMaskIDs[t.id],248)},r.prototype.prepareBuffers=function(){},r.prototype.bindDefaultFramebuffer=function(){var t=this.gl;t.bindFramebuffer(t.FRAMEBUFFER,null)};var m={symbol:t("./draw_symbol"),circle:t("./draw_circle"),line:t("./draw_line"),fill:t("./draw_fill"),raster:t("./draw_raster"),background:t("./draw_background"),debug:t("./draw_debug")};r.prototype.render=function(t,e){this.style=t,this.options=e,this.lineAtlas=t.lineAtlas,this.spriteAtlas=t.spriteAtlas,this.spriteAtlas.setSprite(t.sprite),this.glyphSource=t.glyphSource,this.frameHistory.record(this.transform.zoom),this.prepareBuffers(),this.clearColor(),this.clearDepth(),this.showOverdrawInspector(e.showOverdrawInspector),this.depthRange=(t._order.length+2)*this.numSublayers*this.depthEpsilon,this.renderPass({isOpaquePass:!0}),this.renderPass({isOpaquePass:!1})},r.prototype.renderPass=function(t){var e=this.style._groups,n=t.isOpaquePass;this.currentLayer=n?this.style._order.length:-1;for(var r=0;r<e.length;r++){var i,o=e[n?e.length-1-r:r],a=this.style.sources[o.source],s=[];if(a){for(s=a.getVisibleCoordinates(),i=0;i<s.length;i++)s[i].posMatrix=this.transform.calculatePosMatrix(s[i],a.maxzoom);this.clearStencil(),a.prepare&&a.prepare(),a.isTileClipped&&this._renderTileClippingMasks(s)}for(n?(this._showOverdrawInspector||this.gl.disable(this.gl.BLEND),this.isOpaquePass=!0):(this.gl.enable(this.gl.BLEND),this.isOpaquePass=!1,s.reverse()),i=0;i<o.length;i++){var l=o[n?o.length-1-i:i];this.currentLayer+=n?-1:1,this.renderLayer(this,a,l,s)}a&&m.debug(this,a,s)}},r.prototype.depthMask=function(t){t!==this._depthMask&&(this._depthMask=t,this.gl.depthMask(t))},r.prototype.renderLayer=function(t,e,n,r){n.isHidden(this.transform.zoom)||("background"===n.type||r.length)&&(this.id=n.id,m[n.type](t,e,n,r))},r.prototype.setDepthSublayer=function(t){var e=1-((1+this.currentLayer)*this.numSublayers+t)*this.depthEpsilon,n=e-1+this.depthRange;this.gl.depthRange(n,e)},r.prototype.translatePosMatrix=function(t,e,n,r){if(!n[0]&&!n[1])return t;if("viewport"===r){var i=Math.sin(-this.transform.angle),a=Math.cos(-this.transform.angle);n=[n[0]*a-n[1]*i,n[0]*i+n[1]*a]}var s=[u(e,n[0],this.transform.zoom),u(e,n[1],this.transform.zoom),0],l=new Float32Array(16);return o.translate(l,t,s),l},r.prototype.saveTexture=function(t){var e=this.reusableTextures[t.size];e?e.push(t):this.reusableTextures[t.size]=[t]},r.prototype.getTexture=function(t){var e=this.reusableTextures[t];return e&&e.length>0?e.pop():null},r.prototype.lineWidth=function(t){this.gl.lineWidth(c.clamp(t,this.lineWidthRange[0],this.lineWidthRange[1]))},r.prototype.showOverdrawInspector=function(t){if(t||this._showOverdrawInspector){this._showOverdrawInspector=t;var e=this.gl;if(t){e.blendFunc(e.CONSTANT_COLOR,e.ONE);var n=8,r=1/n;e.blendColor(r,r,r,0),e.clearColor(0,0,0,1),e.clear(e.COLOR_BUFFER_BIT)}else e.blendFunc(e.ONE,e.ONE_MINUS_SRC_ALPHA)}}},{"../data/bucket":67,"../data/buffer":72,"../source/pixels_to_tile_units":97,"../source/tile_pyramid":102,"../util/browser":155,"../util/struct_array":167,"../util/util":169,"./draw_background":81,"./draw_circle":82,"./draw_debug":84,"./draw_fill":85,"./draw_line":86,"./draw_raster":87,"./draw_symbol":88,"./frame_history":89,"./painter/use_program":92,"./vertex_array_object":93,"gl-matrix":24}],92:[function(t,e,n){"use strict";var r=(t("path"),t("assert")),i=t("../../util/util"),o={debug:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\n\nvoid main() {\n    gl_FragColor = u_color;\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1);\n}\n"},fill:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvoid main() {\n    gl_FragColor = u_color * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n"},circle:{fragmentSource:"precision mediump float;\n\nuniform lowp float u_blur;\nuniform lowp float u_opacity;\n\nvarying lowp vec4 v_color;\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main() {\n    float t = smoothstep(1.0 - max(u_blur, v_antialiasblur), 1.0, length(v_extrude));\n    gl_FragColor = v_color * (1.0 - t) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_extrude_scale;\nuniform float u_devicepixelratio;\n\nattribute vec2 a_pos;\n\n#ifdef ATTRIBUTE_A_COLOR\nattribute lowp vec4 a_color;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\nuniform lowp float u_color_t;\nattribute lowp vec4 a_color0;\nattribute lowp vec4 a_color1;\nattribute lowp vec4 a_color2;\nattribute lowp vec4 a_color3;\n#else\nuniform lowp vec4 a_color;\n#endif\n\n#ifdef ATTRIBUTE_A_RADIUS\nattribute mediump float a_radius;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\nuniform lowp float u_radius_t;\nattribute mediump vec4 a_radius;\n#else\nuniform mediump float a_radius;\n#endif\n\nvarying vec2 v_extrude;\nvarying lowp vec4 v_color;\nvarying lowp float v_antialiasblur;\n\nfloat evaluate_zoom_function_1(const vec4 values, const float t) {\n    if (t < 1.0) {\n        return mix(values[0], values[1], t);\n    } else if (t < 2.0) {\n        return mix(values[1], values[2], t - 1.0);\n    } else {\n        return mix(values[2], values[3], t - 2.0);\n    }\n}\n\nvec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) {\n    if (t < 1.0) {\n        return mix(value0, value1, t);\n    } else if (t < 2.0) {\n        return mix(value1, value2, t - 1.0);\n    } else {\n        return mix(value2, value3, t - 2.0);\n    }\n}\n\nvoid main(void) {\n\n#ifdef ATTRIBUTE_A_RADIUS\n    mediump float radius = a_radius / 10.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\n    mediump float radius = evaluate_zoom_function_1(a_radius, u_radius_t) / 10.0;\n#else\n    mediump float radius = a_radius;\n#endif\n\n    // unencode the extrusion vector that we snuck into the a_pos vector\n    v_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);\n\n    vec2 extrude = v_extrude * radius * u_extrude_scale;\n    // multiply a_pos by 0.5, since we had it * 2 in order to sneak\n    // in extrusion data\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1);\n\n    // gl_Position is divided by gl_Position.w after this shader runs.\n    // Multiply the extrude by it so that it isn't affected by it.\n    gl_Position.xy += extrude * gl_Position.w;\n\n#ifdef ATTRIBUTE_A_COLOR\n    v_color = a_color / 255.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\n    v_color = evaluate_zoom_function_4(a_color0, a_color1, a_color2, a_color3, u_color_t) / 255.0;\n#else\n    v_color = a_color;\n#endif\n\n    // This is a minimum blur distance that serves as a faux-antialiasing for\n    // the circle. since blur is a ratio of the circle's size and the intent is\n    // to keep the blur at roughly 1px, the two are inversely related.\n    v_antialiasblur = 1.0 / u_devicepixelratio / radius;\n}\n"},line:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"},linepattern:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform float u_point;\nuniform float u_blur;\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_fade;\nuniform float u_opacity;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0);\n    float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0);\n    float y_a = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_a.y);\n    float y_b = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_b.y);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, vec2(x_a, y_a));\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, vec2(x_b, y_b));\n\n    vec4 color = mix(texture2D(u_image, pos), texture2D(u_image, pos2), u_fade);\n\n    alpha *= u_opacity;\n\n    gl_FragColor = color * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 extrude = a_extrude * scale;\n    mediump vec2 dist = u_linewidth.s * extrude;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n    v_linesofar = a_linesofar;\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"},linesdfpattern:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\nuniform sampler2D u_image;\nuniform float u_sdfgamma;\nuniform float u_mix;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float sdfdist_a = texture2D(u_image, v_tex_a).a;\n    float sdfdist_b = texture2D(u_image, v_tex_b).a;\n    float sdfdist = mix(sdfdist_a, sdfdist_b, u_mix);\n    alpha *= smoothstep(0.5 - u_sdfgamma, 0.5 + u_sdfgamma, sdfdist);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump vec2 u_linewidth;\nuniform mediump float u_ratio;\nuniform vec2 u_patternscale_a;\nuniform float u_tex_y_a;\nuniform vec2 u_patternscale_b;\nuniform float u_tex_y_b;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    v_tex_a = vec2(a_linesofar * u_patternscale_a.x, normal.y * u_patternscale_a.y + u_tex_y_a);\n    v_tex_b = vec2(a_linesofar * u_patternscale_b.x, normal.y * u_patternscale_b.y + u_tex_y_b);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"},outline:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"},outlinepattern:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    // find distance to outline for alpha interpolation\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    \n\n    gl_FragColor = mix(color1, color2, u_mix) * alpha * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++vertexSource:"precision highp float;\n\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"},pattern:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    gl_FragColor = mix(color1, color2, u_mix) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n}\n"},raster:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity0;\nuniform float u_opacity1;\nuniform sampler2D u_image0;\nuniform sampler2D u_image1;\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nuniform float u_brightness_low;\nuniform float u_brightness_high;\n\nuniform float u_saturation_factor;\nuniform float u_contrast_factor;\nuniform vec3 u_spin_weights;\n\nvoid main() {\n\n    // read and cross-fade colors from the main and parent tiles\n    vec4 color0 = texture2D(u_image0, v_pos0);\n    vec4 color1 = texture2D(u_image1, v_pos1);\n    vec4 color = color0 * u_opacity0 + color1 * u_opacity1;\n    vec3 rgb = color.rgb;\n\n    // spin\n    rgb = vec3(\n        dot(rgb, u_spin_weights.xyz),\n        dot(rgb, u_spin_weights.zxy),\n        dot(rgb, u_spin_weights.yzx));\n\n    // saturation\n    float average = (color.r + color.g + color.b) / 3.0;\n    rgb += (average - rgb) * u_saturation_factor;\n\n    // contrast\n    rgb = (rgb - 0.5) * u_contrast_factor + 0.5;\n\n    // brightness\n    vec3 u_high_vec = vec3(u_brightness_low, u_brightness_low, u_brightness_low);\n    vec3 u_low_vec = vec3(u_brightness_high, u_brightness_high, u_brightness_high);\n\n    gl_FragColor = vec4(mix(u_high_vec, u_low_vec, rgb), color.a);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_tl_parent;\nuniform float u_scale_parent;\nuniform float u_buffer_scale;\n\nattribute vec2 a_pos;\nattribute vec2 a_texture_pos;\n\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5;\n    v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent;\n}\n"},icon:{fragmentSource:"precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp float u_opacity;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * u_opacity;\n    gl_FragColor = texture2D(u_texture, v_tex) * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"},sdf:{fragmentSource:"precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform lowp float u_buffer;\nuniform lowp float u_gamma;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    lowp float dist = texture2D(u_texture, v_tex).a;\n    lowp float fade_alpha = texture2D(u_fadetexture, v_fade_tex).a;\n    lowp float gamma = u_gamma * v_gamma_scale;\n    lowp float alpha = smoothstep(u_buffer - gamma, u_buffer + gamma, dist) * fade_alpha;\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - y * u_extra);\n    v_gamma_scale = perspective_scale;\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"},collisionbox:{fragmentSource:"precision mediump float;\n\nuniform float u_zoom;\nuniform float u_maxzoom;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n\n    float alpha = 0.5;\n\n    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha;\n\n    if (v_placement_zoom > u_zoom) {\n        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha;\n    }\n\n    if (u_zoom >= v_max_zoom) {\n        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25;\n    }\n\n    if (v_placement_zoom >= u_maxzoom) {\n        gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2;\n    }\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_extrude;\nattribute vec2 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_scale;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n     gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0);\n\n     v_max_zoom = a_data.x;\n     v_placement_zoom = a_data.y;\n}\n"}};e.exports._createProgram=function(t,e){var n=this.gl,a=n.createProgram(),s=o[t],l="";if(e)for(var u=0;u<e.length;u++)l+="#define "+e[u]+"\n";var c=n.createShader(n.FRAGMENT_SHADER);n.shaderSource(c,l+s.fragmentSource),n.compileShader(c),r(n.getShaderParameter(c,n.COMPILE_STATUS),n.getShaderInfoLog(c)),n.attachShader(a,c);var f=n.createShader(n.VERTEX_SHADER);n.shaderSource(f,l+s.vertexSource),n.compileShader(f),r(n.getShaderParameter(f,n.COMPILE_STATUS),n.getShaderInfoLog(f)),n.attachShader(a,f),n.linkProgram(a),r(n.getProgramParameter(a,n.LINK_STATUS),n.getProgramInfoLog(a));for(var h={},d=n.getProgramParameter(a,n.ACTIVE_ATTRIBUTES),p=0;p<d;p++){var m=n.getActiveAttrib(a,p);h[m.name]=p}for(var g={},v=n.getProgramParameter(a,n.ACTIVE_UNIFORMS),y=0;y<v;y++){var x=n.getActiveUniform(a,y);g[x.name]=n.getUniformLocation(a,x.name)}return i.extend({program:a,definition:s,attributes:h,numAttributes:d},h,g)},e.exports._createProgramCached=function(t,e){this.cache=this.cache||{},this._showOverdrawInspector&&(e=e||[],e.push("OVERDRAW_INSPECTOR"));var n=JSON.stringify({name:t,macros:e});return this.cache[n]||(this.cache[n]=this._createProgram(t,e)),this.cache[n]},e.exports.useProgram=function(t,e){var n=this.gl,r=this._createProgramCached(t,e),i=this.currentProgram;return i!==r&&(n.useProgram(r.program),this.currentProgram=r),r}},{"../../util/util":169,assert:6,path:171}],93:[function(t,e,n){"use strict";function r(){this.boundProgram=null,this.boundVertexBuffer=null,this.boundVertexBuffer2=null,this.boundElementBuffer=null,this.vao=null}var i=t("assert");e.exports=r;var o=!1;r.prototype.bind=function(t,e,n,r,a){var s=t.extVertexArrayObject;if(void 0===s&&(s=t.extVertexArrayObject=t.getExtension("OES_vertex_array_object")),s?(this.vao||(this.vao=s.createVertexArrayOES()),s.bindVertexArrayOES(this.vao)):o||(console.warn("Not using VertexArrayObject extension."),o=!0),this.boundProgram)i(this.boundProgram===e,"trying to bind a VAO to a different shader"),i(this.boundVertexBuffer===n,"trying to bind a VAO to a different vertex buffer"),i(this.boundVertexBuffer2===a,"trying to bind a VAO to a different vertex buffer"),i(this.boundElementBuffer===r,"trying to bind a VAO to a different element buffer");else{var l,u=s?0:t.currentNumAttributes||0,c=e.numAttributes;for(l=u;l<c;l++)t.enableVertexAttribArray(l);if(!s){for(i(l>0),l=c;l<u;l++)t.disableVertexAttribArray(l);t.currentNumAttributes=c}n.bind(t),n.setVertexAttribPointers(t,e),a&&(a.bind(t),a.setVertexAttribPointers(t,e)),r&&r.bind(t),s&&(this.boundProgram=e,this.boundVertexBuffer=n,this.boundVertexBuffer2=a,this.boundElementBuffer=r)}},r.prototype.unbind=function(t){var e=t.extVertexArrayObject;e&&e.bindVertexArrayOES(null)},r.prototype.destroy=function(t){var e=t.extVertexArrayObject;e&&this.vao&&(e.deleteVertexArrayOES(this.vao),this.vao=null)}},{assert:6}],94:[function(t,e,n){"use strict";function r(t){t=t||{},this._data=t.data,void 0!==t.maxzoom&&(this.maxzoom=t.maxzoom);var e=u/this.tileSize;this.geojsonVtOptions={buffer:(void 0!==t.buffer?t.buffer:128)*e,tolerance:(void 0!==t.tolerance?t.tolerance:.375)*e,extent:u,maxZoom:this.maxzoom},this.cluster=t.cluster||!1,this.superclusterOptions={maxZoom:Math.min(t.clusterMaxZoom,this.maxzoom-1)||this.maxzoom-1,extent:u,radius:(t.clusterRadius||50)*e,log:!1},this._pyramid=new a({tileSize:this.tileSize,minzoom:this.minzoom,maxzoom:this.maxzoom,reparseOverscaled:!0,load:this._loadTile.bind(this),abort:this._abortTile.bind(this),unload:this._unloadTile.bind(this),add:this._addTile.bind(this),remove:this._removeTile.bind(this),redoPlacement:this._redoTilePlacement.bind(this)})}var i=t("../util/util"),o=t("../util/evented"),a=t("./tile_pyramid"),s=t("./source"),l=t("resolve-url"),u=t("../data/bucket").EXTENT;e.exports=r,r.prototype=i.inherit(o,{minzoom:0,maxzoom:18,tileSize:512,_dirty:!0,isTileClipped:!0,setData:function(t){return this._data=t,this._dirty=!0,this.fire("change"),this.map&&this.update(this.map.transform),this},onAdd:function(t){this.map=t},loaded:function(){return this._loaded&&this._pyramid.loaded()},update:function(t){this._dirty&&this._updateData(),this._loaded&&this._pyramid.update(this.used,t)},reload:function(){this._loaded&&this._pyramid.reload()},serialize:function(){return{type:"geojson",data:this._data}},getVisibleCoordinates:s._getVisibleCoordinates,getTile:s._getTile,queryRenderedFeatures:s._queryRenderedVectorFeatures,querySourceFeatures:s._querySourceFeatures,_updateData:function(){this._dirty=!1;var t={tileSize:this.tileSize,source:this.id,geojsonVtOptions:this.geojsonVtOptions,cluster:this.cluster,superclusterOptions:this.superclusterOptions},e=this._data;"string"==typeof e?t.url="undefined"!=typeof window?l(window.location.href,e):e:t.data=JSON.stringify(e),this.workerID=this.dispatcher.send("parse geojson",t,function(t){this._loaded=!0,t?this.fire("error",{error:t}):(this._pyramid.reload(),this.fire("change"))}.bind(this))},_loadTile:function(t){var e=t.coord.z>this.maxzoom?Math.pow(2,t.coord.z-this.maxzoom):1,n={uid:t.uid,coord:t.coord,zoom:t.coord.z,maxZoom:this.maxzoom,tileSize:this.tileSize,source:this.id,overscaling:e,angle:this.map.transform.angle,pitch:this.map.transform.pitch,showCollisionBoxes:this.map.showCollisionBoxes};t.workerID=this.dispatcher.send("load geojson tile",n,function(e,n){if(t.unloadVectorData(this.map.painter),!t.aborted){if(e)return void this.fire("tile.error",{tile:t});t.loadVectorData(n,this.map.style),t.redoWhenDone&&(t.redoWhenDone=!1,t.redoPlacement(this)),this.fire("tile.load",{tile:t})}}.bind(this),this.workerID)},_abortTile:function(t){t.aborted=!0},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.unloadVectorData(this.map.painter),this.dispatcher.send("remove tile",{uid:t.uid,source:this.id},null,t.workerID)},redoPlacement:s.redoPlacement,_redoTilePlacement:function(t){t.redoPlacement(this)}})},{"../data/bucket":67,"../util/evented":161,"../util/util":169,"./source":99,"./tile_pyramid":102,"resolve-url":176}],95:[function(t,e,n){"use strict";function r(t){this.features=t,this.length=t.length,this.extent=s}function i(t){this.type=t.type,this.rawGeometry=1===t.type?[t.geometry]:t.geometry,this.properties=t.tags,this.extent=s}var o=t("point-geometry"),a=t("vector-tile").VectorTileFeature,s=t("../data/bucket").EXTENT;e.exports=r,r.prototype.feature=function(t){return new i(this.features[t])},i.prototype.loadGeometry=function(){var t=this.rawGeometry;this.geometry=[];for(var e=0;e<t.length;e++){for(var n=t[e],r=[],i=0;i<n.length;i++)r.push(new o(n[i][0],n[i][1]));this.geometry.push(r)}return this.geometry},i.prototype.bbox=function(){this.geometry||this.loadGeometry();for(var t=this.geometry,e=1/0,n=-(1/0),r=1/0,i=-(1/0),o=0;o<t.length;o++)for(var a=t[o],s=0;s<a.length;s++){var l=a[s];e=Math.min(e,l.x),n=Math.max(n,l.x),r=Math.min(r,l.y),i=Math.max(i,l.y)}return[e,r,n,i]},i.prototype.toGeoJSON=a.prototype.toGeoJSON},{"../data/bucket":67,"point-geometry":174,"vector-tile":184}],96:[function(t,e,n){"use strict";function r(t){this.urls=t.urls,this.coordinates=t.coordinates,c.getImage(t.url,function(e,n){e||(this.image=n,this.image.addEventListener("load",function(){this.map._rerender()}.bind(this)),this._loaded=!0,this.map&&this.setCoordinates(t.coordinates))}.bind(this))}var i=t("../util/util"),o=t("./tile"),a=t("./tile_coord"),s=t("../geo/lng_lat"),l=t("point-geometry"),u=t("../util/evented"),c=t("../util/ajax"),f=t("../data/bucket").EXTENT,h=t("../render/draw_raster").RasterBoundsArray,d=t("../data/buffer"),p=t("../render/vertex_array_object");e.exports=r,r.prototype=i.inherit(u,{onAdd:function(t){this.map=t,this.image&&this.setCoordinates(this.coordinates)},setCoordinates:function(t){this.coordinates=t;var e=this.map,n=t.map(function(t){return e.transform.locationCoordinate(s.convert(t)).zoomTo(0)}),r=this.centerCoord=i.getCoordinatesCenter(n);r.column=Math.round(r.column),r.row=Math.round(r.row);var u=n.map(function(t){var e=t.zoomTo(r.zoom);return new l(Math.round((e.column-r.column)*f),Math.round((e.row-r.row)*f))}),c=32767,m=new h;return m.emplaceBack(u[0].x,u[0].y,0,0),m.emplaceBack(u[1].x,u[1].y,c,0),m.emplaceBack(u[3].x,u[3].y,0,c),m.emplaceBack(u[2].x,u[2].y,c,c),this.tile=new o(new a(r.zoom,r.column,r.row)),this.tile.buckets={},this.tile.boundsBuffer=new d(m.serialize(),h.serialize(),d.BufferType.VERTEX),this.tile.boundsVAO=new p,this.fire("change"),this},loaded:function(){return this.image&&this.image.complete},update:function(){},reload:function(){},prepare:function(){if(this._loaded&&this.loaded()){var t=this.map.painter,e=t.gl;this.tile.texture?(e.bindTexture(e.TEXTURE_2D,this.tile.texture),e.texSubImage2D(e.TEXTURE_2D,0,0,0,e.RGBA,e.UNSIGNED_BYTE,this.image)):(this.tile.texture=e.createTexture(),e.bindTexture(e.TEXTURE_2D,this.tile.texture),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_S,e.CLAMP_TO_EDGE),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_T,e.CLAMP_TO_EDGE),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MIN_FILTER,e.LINEAR),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MAG_FILTER,e.LINEAR),e.texImage2D(e.TEXTURE_2D,0,e.RGBA,e.RGBA,e.UNSIGNED_BYTE,this.image))}},getVisibleCoordinates:function(){return this.tile?[this.tile.coord]:[]},getTile:function(){return this.tile},serialize:function(){return{type:"image",urls:this.urls,coordinates:this.coordinates}}})},{"../data/bucket":67,"../data/buffer":72,"../geo/lng_lat":76,"../render/draw_raster":87,"../render/vertex_array_object":93,"../util/ajax":154,"../util/evented":161,"../util/util":169,"./tile":100,"./tile_coord":101,"point-geometry":174}],97:[function(t,e,n){"use strict";var r=t("../data/bucket");e.exports=function(t,e,n){return e*(r.EXTENT/(t.tileSize*Math.pow(2,n-t.coord.z)))}},{"../data/bucket":67}],98:[function(t,e,n){"use strict";function r(t){i.extend(this,i.pick(t,["url","tileSize"])),s._loadTileJSON.call(this,t)}var i=t("../util/util"),o=t("../util/ajax"),a=t("../util/evented"),s=t("./source"),l=t("../util/mapbox").normalizeTileURL;e.exports=r,r.prototype=i.inherit(a,{minzoom:0,maxzoom:22,roundZoom:!0,tileSize:512,_loaded:!1,onAdd:function(t){this.map=t},loaded:function(){return this._pyramid&&this._pyramid.loaded()},update:function(t){this._pyramid&&this._pyramid.update(this.used,t,this.map.style.rasterFadeDuration)},reload:function(){},serialize:function(){return{type:"raster",url:this.url,tileSize:this.tileSize}},getVisibleCoordinates:s._getVisibleCoordinates,getTile:s._getTile,_loadTile:function(t){function e(e,n){if(delete t.request,!t.aborted){if(e)return t.errored=!0,void this.fire("tile.error",{tile:t,error:e});var r=this.map.painter.gl;t.texture=this.map.painter.getTexture(n.width),t.texture?(r.bindTexture(r.TEXTURE_2D,t.texture),r.texSubImage2D(r.TEXTURE_2D,0,0,0,r.RGBA,r.UNSIGNED_BYTE,n)):(t.texture=r.createTexture(),r.bindTexture(r.TEXTURE_2D,t.texture),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_MIN_FILTER,r.LINEAR_MIPMAP_NEAREST),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_MAG_FILTER,r.LINEAR),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_WRAP_S,r.CLAMP_TO_EDGE),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_WRAP_T,r.CLAMP_TO_EDGE),r.pixelStorei(r.UNPACK_PREMULTIPLY_ALPHA_WEBGL,!0),r.texImage2D(r.TEXTURE_2D,0,r.RGBA,r.RGBA,r.UNSIGNED_BYTE,n),t.texture.size=n.width),r.generateMipmap(r.TEXTURE_2D),t.timeAdded=(new Date).getTime(),this.map.animationLoop.set(this.style.rasterFadeDuration),t.source=this,t.loaded=!0,this.fire("tile.load",{tile:t})}}var n=l(t.coord.url(this.tiles),this.url,this.tileSize);t.request=o.getImage(n,e.bind(this))},_abortTile:function(t){t.aborted=!0,t.request&&(t.request.abort(),delete t.request)},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.texture&&this.map.painter.saveTexture(t.texture)}})},{"../util/ajax":154,"../util/evented":161,"../util/mapbox":166,"../util/util":169,"./source":99}],99:[function(t,e,n){"use strict";function r(t,e){var n=t.tile.coord,r=e.tile.coord;return n.z-r.z||n.y-r.y||n.x-r.x}function i(t){for(var e=t[0]||{},n=1;n<t.length;n++){var r=t[n];for(var i in r){var o=r[i],a=e[i];if(void 0===a)a=e[i]=o;else for(var s=0;s<o.length;s++)a.push(o[s])}}return e}var o=t("../util/util"),a=t("../util/ajax"),s=t("../util/browser"),l=t("./tile_pyramid"),u=t("../util/mapbox").normalizeSourceURL,c=t("./tile_coord");n._loadTileJSON=function(t){var e=function(t,e){return t?void this.fire("error",{error:t}):(o.extend(this,o.pick(e,["tiles","minzoom","maxzoom","attribution"])),e.vector_layers&&(this.vectorLayers=e.vector_layers,this.vectorLayerIds=this.vectorLayers.map(function(t){return t.id})),this._pyramid=new l({tileSize:this.tileSize,minzoom:this.minzoom,maxzoom:this.maxzoom,roundZoom:this.roundZoom,reparseOverscaled:this.reparseOverscaled,load:this._loadTile.bind(this),abort:this._abortTile.bind(this),unload:this._unloadTile.bind(this),add:this._addTile.bind(this),remove:this._removeTile.bind(this),redoPlacement:this._redoTilePlacement?this._redoTilePlacement.bind(this):void 0}),void this.fire("load"))}.bind(this);t.url?a.getJSON(u(t.url),e):s.frame(e.bind(this,null,t))},n.redoPlacement=function(){if(this._pyramid)for(var t=this._pyramid.orderedIDs(),e=0;e<t.length;e++){var n=this._pyramid.getTile(t[e]);this._redoTilePlacement(n)}},n._getTile=function(t){return this._pyramid.getTile(t.id)},n._getVisibleCoordinates=function(){return this._pyramid?this._pyramid.renderedIDs().map(c.fromID):[]},n._queryRenderedVectorFeatures=function(t,e,n,o){if(!this._pyramid)return{};var a=this._pyramid.tilesIn(t);a.sort(r);for(var s=this.map.style._layers,l=[],u=0;u<a.length;u++){var c=a[u];c.tile.featureIndex&&l.push(c.tile.featureIndex.query({queryGeometry:c.queryGeometry,scale:c.scale,tileSize:c.tile.tileSize,bearing:o,params:e},s))}return i(l)},n._querySourceFeatures=function(t){if(!this._pyramid)return[];for(var e=this._pyramid,n=e.renderedIDs().map(function(t){return e.getTile(t)}),r=[],i={},o=0;o<n.length;o++){var a=n[o],s=new c(Math.min(a.sourceMaxZoom,a.coord.z),a.coord.x,a.coord.y,0).id;i[s]||(i[s]=!0,a.querySourceFeatures(r,t))}return r},n.create=function(e){var r={vector:t("./vector_tile_source"),raster:t("./raster_tile_source"),geojson:t("./geojson_source"),video:t("./video_source"),image:t("./image_source")};return n.is(e)?e:new r[e.type](e)},n.is=function(e){var n={vector:t("./vector_tile_source"),raster:t("./raster_tile_source"),geojson:t("./geojson_source"),video:t("./video_source"),image:t("./image_source")};for(var r in n)if(e instanceof n[r])return!0;return!1}},{"../util/ajax":154,"../util/browser":155,"../util/mapbox":166,"../util/util":169,"./geojson_source":94,"./image_source":96,"./raster_tile_source":98,"./tile_coord":101,"./tile_pyramid":102,"./vector_tile_source":103,"./video_source":104}],100:[function(t,e,n){"use strict";function r(t,e,n){this.coord=t,this.uid=o.uniqueId(),this.loaded=!1,this.isUnloaded=!1,this.uses=0,this.tileSize=e,this.sourceMaxZoom=n,this.buckets={}}function i(t,e){for(var n={},r=0;r<t.length;r++){var i=e.getLayer(t[r].layerId);if(i){var s=a.create(o.extend({layer:i,childLayers:t[r].childLayerIds.map(e.getLayer.bind(e)).filter(function(t){return t})},t[r]));n[s.id]=s}}return n}var o=t("../util/util"),a=t("../data/bucket"),s=t("../data/feature_index"),l=t("vector-tile"),u=t("pbf"),c=t("../util/vectortile_to_geojson"),f=t("feature-filter"),h=t("../symbol/collision_tile"),d=t("../symbol/collision_box");e.exports=r,r.prototype={loadVectorData:function(t,e){this.loaded=!0,t&&(this.collisionBoxArray=new d(t.collisionBoxArray),this.collisionTile=new h(t.collisionTile,this.collisionBoxArray),this.featureIndex=new s(t.featureIndex,t.rawTileData,this.collisionTile),this.rawTileData=t.rawTileData,this.buckets=i(t.buckets,e))},reloadSymbolData:function(t,e,n){if(!this.isUnloaded){this.collisionTile=new h(t.collisionTile,this.collisionBoxArray),this.featureIndex.setCollisionTile(this.collisionTile);for(var r in this.buckets){var a=this.buckets[r];"symbol"===a.type&&(a.destroy(e.gl),delete this.buckets[r])}o.extend(this.buckets,i(t.buckets,n))}},unloadVectorData:function(t){for(var e in this.buckets){var n=this.buckets[e];n.destroy(t.gl)}this.collisionBoxArray=null,this.collisionTile=null,this.featureIndex=null,this.rawTileData=null,this.buckets=null,this.loaded=!1,this.isUnloaded=!0},redoPlacement:function(t){function e(e,n){this.reloadSymbolData(n,t.map.painter,t.map.style),t.fire("tile.load",{tile:this}),this.redoingPlacement=!1,this.redoWhenDone&&(this.redoPlacement(t),this.redoWhenDone=!1)}return!this.loaded||this.redoingPlacement?void(this.redoWhenDone=!0):(this.redoingPlacement=!0,void t.dispatcher.send("redo placement",{uid:this.uid,source:t.id,angle:t.map.transform.angle,pitch:t.map.transform.pitch,showCollisionBoxes:t.map.showCollisionBoxes},e.bind(this),this.workerID))},getBucket:function(t){return this.buckets&&this.buckets[t.ref||t.id]},querySourceFeatures:function(t,e){if(this.rawTileData){this.vtLayers||(this.vtLayers=new l.VectorTile(new u(new Uint8Array(this.rawTileData))).layers);var n=this.vtLayers._geojsonTileLayer||this.vtLayers[e.sourceLayer];if(n)for(var r=f(e.filter),i={z:this.coord.z,x:this.coord.x,y:this.coord.y},o=0;o<n.length;o++){var a=n.feature(o);if(r(a)){var s=new c(a,this.coord.z,this.coord.x,this.coord.y);s.tile=i,t.push(s)}}}}}},{"../data/bucket":67,"../data/feature_index":73,"../symbol/collision_box":126,"../symbol/collision_tile":128,"../util/util":169,"../util/vectortile_to_geojson":170,"feature-filter":12,pbf:173,"vector-tile":184}],101:[function(t,e,n){"use strict";function r(t,e,n,r){s(!isNaN(t)&&t>=0&&t%1===0),s(!isNaN(e)&&e>=0&&e%1===0),s(!isNaN(n)&&n>=0&&n%1===0),isNaN(r)&&(r=0),this.z=+t,this.x=+e,this.y=+n,this.w=+r,r*=2,r<0&&(r=r*-1-1);var i=1<<this.z;this.id=32*(i*i*r+i*this.y+this.x)+this.z,this.posMatrix=null}function i(t,e){if(t.row>e.row){var n=t;t=e,e=n}return{x0:t.column,y0:t.row,x1:e.column,y1:e.row,dx:e.column-t.column,dy:e.row-t.row}}function o(t,e,n,r,i){var o=Math.max(n,Math.floor(e.y0)),a=Math.min(r,Math.ceil(e.y1));if(t.x0===e.x0&&t.y0===e.y0?t.x0+e.dy/t.dy*t.dx<e.x1:t.x1-e.dy/t.dy*t.dx<e.x0){var s=t;t=e,e=s}for(var l=t.dx/t.dy,u=e.dx/e.dy,c=t.dx>0,f=e.dx<0,h=o;h<a;h++){var d=l*Math.max(0,Math.min(t.dy,h+c-t.y0))+t.x0,p=u*Math.max(0,Math.min(e.dy,h+f-e.y0))+e.x0;i(Math.floor(p),Math.ceil(d),h)}}function a(t,e,n,r,a,s){var l,u=i(t,e),c=i(e,n),f=i(n,t);u.dy>c.dy&&(l=u,u=c,c=l),u.dy>f.dy&&(l=u,u=f,f=l),c.dy>f.dy&&(l=c,c=f,f=l),u.dy&&o(f,u,r,a,s),c.dy&&o(f,c,r,a,s)}var s=t("assert"),l=t("../geo/coordinate");e.exports=r,r.prototype.toString=function(){return this.z+"/"+this.x+"/"+this.y},r.prototype.toCoordinate=function(t){var e=Math.min(this.z,t),n=Math.pow(2,e),r=this.y,i=this.x+n*this.w;return new l(i,r,e)},r.fromID=function(t){var e=t%32,n=1<<e,i=(t-e)/32,o=i%n,a=(i-o)/n%n,s=Math.floor(i/(n*n));return s%2!==0&&(s=s*-1-1),s/=2,new r(e,o,a,s)},r.prototype.url=function(t,e){return t[(this.x+this.y)%t.length].replace("{prefix}",(this.x%16).toString(16)+(this.y%16).toString(16)).replace("{z}",Math.min(this.z,e||this.z)).replace("{x}",this.x).replace("{y}",this.y)},r.prototype.parent=function(t){return 0===this.z?null:this.z>t?new r(this.z-1,this.x,this.y,this.w):new r(this.z-1,Math.floor(this.x/2),Math.floor(this.y/2),this.w)},r.prototype.wrapped=function(){return new r(this.z,this.x,this.y,0)},r.prototype.children=function(t){if(this.z>=t)return[new r(this.z+1,this.x,this.y,this.w)];var e=this.z+1,n=2*this.x,i=2*this.y;return[new r(e,n,i,this.w),new r(e,n+1,i,this.w),new r(e,n,i+1,this.w),new r(e,n+1,i+1,this.w)]},r.cover=function(t,e,n){function i(t,e,i){var a,l,u;if(i>=0&&i<=o)for(a=t;a<e;a++)l=(a%o+o)%o,u=new r(n,l,i,Math.floor(a/o)),s[u.id]=u}var o=1<<t,s={};return a(e[0],e[1],e[2],0,o,i),a(e[2],e[3],e[0],0,o,i),Object.keys(s).map(function(t){return s[t]})}},{"../geo/coordinate":75,assert:6}],102:[function(t,e,n){"use strict";function r(t){this.tileSize=t.tileSize,this.minzoom=t.minzoom,this.maxzoom=t.maxzoom,this.roundZoom=t.roundZoom,this.reparseOverscaled=t.reparseOverscaled,this._load=t.load,this._abort=t.abort,this._unload=t.unload,this._add=t.add,this._remove=t.remove,this._redoPlacement=t.redoPlacement,this._tiles={},this._cache=new u(0,function(t){return this._unload(t)}.bind(this)),this._filterRendered=this._filterRendered.bind(this)}function i(t,e,n){var r=n.zoomTo(Math.min(t.z,e));return{x:(r.column-(t.x+t.w*Math.pow(2,t.z)))*h,y:(r.row-t.y)*h}}function o(t,e){return t%32-e%32}var a=t("./tile"),s=t("./tile_coord"),l=t("point-geometry"),u=t("../util/lru_cache"),c=t("../geo/coordinate"),f=t("../util/util"),h=t("../data/bucket").EXTENT;e.exports=r,r.maxOverzooming=10,r.maxUnderzooming=3,r.prototype={loaded:function(){for(var t in this._tiles)if(!this._tiles[t].loaded&&!this._tiles[t].errored)return!1;return!0},orderedIDs:function(){return Object.keys(this._tiles).map(Number).sort(o)},renderedIDs:function(){return this.orderedIDs().filter(this._filterRendered)},_filterRendered:function(t){return this._tiles[t].loaded&&!this._coveredTiles[t]},reload:function(){this._cache.reset();for(var t in this._tiles)this._load(this._tiles[t])},getTile:function(t){return this._tiles[t]},getZoom:function(t){return t.zoom+Math.log(t.tileSize/this.tileSize)/Math.LN2},coveringZoomLevel:function(t){return(this.roundZoom?Math.round:Math.floor)(this.getZoom(t))},coveringTiles:function(t){var e=this.coveringZoomLevel(t),n=e;if(e<this.minzoom)return[];e>this.maxzoom&&(e=this.maxzoom);var r=t,i=r.locationCoordinate(r.center)._zoomTo(e),o=new l(i.column-.5,i.row-.5);return s.cover(e,[r.pointCoordinate(new l(0,0))._zoomTo(e),r.pointCoordinate(new l(r.width,0))._zoomTo(e),r.pointCoordinate(new l(r.width,r.height))._zoomTo(e),r.pointCoordinate(new l(0,r.height))._zoomTo(e)],this.reparseOverscaled?n:e).sort(function(t,e){return o.dist(t)-o.dist(e)})},findLoadedChildren:function(t,e,n){var r=!1;for(var i in this._tiles){var o=this._tiles[i];if(!(n[i]||!o.loaded||o.coord.z<=t.z||o.coord.z>e)){var a=Math.pow(2,Math.min(o.coord.z,this.maxzoom)-Math.min(t.z,this.maxzoom));if(Math.floor(o.coord.x/a)===t.x&&Math.floor(o.coord.y/a)===t.y)for(n[i]=!0,r=!0;o&&o.coord.z-1>t.z;){var s=o.coord.parent(this.maxzoom).id;o=this._tiles[s],o&&o.loaded&&(delete n[i],n[s]=!0)}}}return r},findLoadedParent:function(t,e,n){for(var r=t.z-1;r>=e;r--){t=t.parent(this.maxzoom);var i=this._tiles[t.id];if(i&&i.loaded)return n[t.id]=!0,i;if(this._cache.has(t.id))return this.addTile(t),n[t.id]=!0,this._tiles[t.id]}},updateCacheSize:function(t){var e=Math.ceil(t.width/t.tileSize)+1,n=Math.ceil(t.height/t.tileSize)+1,r=e*n,i=5;this._cache.setMaxSize(Math.floor(r*i))},update:function(t,e,n){var i,o,a;this.updateCacheSize(e);var l=(this.roundZoom?Math.round:Math.floor)(this.getZoom(e)),u=Math.max(l-r.maxOverzooming,this.minzoom),c=Math.max(l+r.maxUnderzooming,this.minzoom),h={},d=(new Date).getTime();this._coveredTiles={};var p=t?this.coveringTiles(e):[];for(i=0;i<p.length;i++)o=p[i],a=this.addTile(o),h[o.id]=!0,a.loaded||this.findLoadedChildren(o,c,h)||this.findLoadedParent(o,u,h);for(var m={},g=Object.keys(h),v=0;v<g.length;v++){var y=g[v];o=s.fromID(y),a=this._tiles[y],a&&a.timeAdded>d-(n||0)&&(this.findLoadedChildren(o,c,h)&&(h[y]=!0),this.findLoadedParent(o,u,m))}var x;for(x in m)h[x]||(this._coveredTiles[x]=!0);for(x in m)h[x]=!0;var b=f.keysDifference(this._tiles,h);for(i=0;i<b.length;i++)this.removeTile(+b[i]);this.transform=e},addTile:function(t){var e=this._tiles[t.id];if(e)return e;var n=t.wrapped();if(e=this._tiles[n.id],e||(e=this._cache.get(n.id),e&&this._redoPlacement&&this._redoPlacement(e)),!e){var r=t.z,i=r>this.maxzoom?Math.pow(2,r-this.maxzoom):1;
++e=new a(n,this.tileSize*i,this.maxzoom),this._load(e)}return e.uses++,this._tiles[t.id]=e,this._add(e,t),e},removeTile:function(t){var e=this._tiles[t];e&&(e.uses--,delete this._tiles[t],this._remove(e),e.uses>0||(e.loaded?this._cache.add(e.coord.wrapped().id,e):(this._abort(e),this._unload(e))))},clearTiles:function(){for(var t in this._tiles)this.removeTile(t);this._cache.reset()},tilesIn:function(t){for(var e={},n=this.orderedIDs(),r=1/0,o=1/0,a=-(1/0),l=-(1/0),u=t[0].zoom,f=0;f<t.length;f++){var d=t[f];r=Math.min(r,d.column),o=Math.min(o,d.row),a=Math.max(a,d.column),l=Math.max(l,d.row)}for(var p=0;p<n.length;p++){var m=this._tiles[n[p]],g=s.fromID(n[p]),v=[i(g,m.sourceMaxZoom,new c(r,o,u)),i(g,m.sourceMaxZoom,new c(a,l,u))];if(v[0].x<h&&v[0].y<h&&v[1].x>=0&&v[1].y>=0){for(var y=[],x=0;x<t.length;x++)y.push(i(g,m.sourceMaxZoom,t[x]));var b=e[m.coord.id];void 0===b&&(b=e[m.coord.id]={tile:m,queryGeometry:[],scale:Math.pow(2,this.transform.zoom-m.coord.z)}),b.queryGeometry.push(y)}}var _=[];for(var w in e)_.push(e[w]);return _}}},{"../data/bucket":67,"../geo/coordinate":75,"../util/lru_cache":165,"../util/util":169,"./tile":100,"./tile_coord":101,"point-geometry":174}],103:[function(t,e,n){"use strict";function r(t){if(i.extend(this,i.pick(t,["url","tileSize"])),this._options=i.extend({type:"vector"},t),512!==this.tileSize)throw new Error("vector tile sources must have a tileSize of 512");a._loadTileJSON.call(this,t)}var i=t("../util/util"),o=t("../util/evented"),a=t("./source"),s=t("../util/mapbox").normalizeTileURL;e.exports=r,r.prototype=i.inherit(o,{minzoom:0,maxzoom:22,tileSize:512,reparseOverscaled:!0,_loaded:!1,isTileClipped:!0,onAdd:function(t){this.map=t},loaded:function(){return this._pyramid&&this._pyramid.loaded()},update:function(t){this._pyramid&&this._pyramid.update(this.used,t)},reload:function(){this._pyramid&&this._pyramid.reload()},serialize:function(){return i.extend({},this._options)},getVisibleCoordinates:a._getVisibleCoordinates,getTile:a._getTile,queryRenderedFeatures:a._queryRenderedVectorFeatures,querySourceFeatures:a._querySourceFeatures,_loadTile:function(t){var e=t.coord.z>this.maxzoom?Math.pow(2,t.coord.z-this.maxzoom):1,n={url:s(t.coord.url(this.tiles,this.maxzoom),this.url),uid:t.uid,coord:t.coord,zoom:t.coord.z,tileSize:this.tileSize*e,source:this.id,overscaling:e,angle:this.map.transform.angle,pitch:this.map.transform.pitch,showCollisionBoxes:this.map.showCollisionBoxes};t.workerID?(n.rawTileData=t.rawTileData,this.dispatcher.send("reload tile",n,this._tileLoaded.bind(this,t),t.workerID)):t.workerID=this.dispatcher.send("load tile",n,this._tileLoaded.bind(this,t))},_tileLoaded:function(t,e,n){if(!t.aborted){if(e)return t.errored=!0,void this.fire("tile.error",{tile:t,error:e});t.loadVectorData(n,this.map.style),t.redoWhenDone&&(t.redoWhenDone=!1,t.redoPlacement(this)),this.fire("tile.load",{tile:t}),this.fire("tile.stats",n.bucketStats)}},_abortTile:function(t){t.aborted=!0,this.dispatcher.send("abort tile",{uid:t.uid,source:this.id},null,t.workerID)},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.unloadVectorData(this.map.painter),this.dispatcher.send("remove tile",{uid:t.uid,source:this.id},null,t.workerID)},redoPlacement:a.redoPlacement,_redoTilePlacement:function(t){t.redoPlacement(this)}})},{"../util/evented":161,"../util/mapbox":166,"../util/util":169,"./source":99}],104:[function(t,e,n){"use strict";function r(t){this.urls=t.urls,this.coordinates=t.coordinates,c.getVideo(t.urls,function(e,n){if(!e){this.video=n,this.video.loop=!0;var r;this.video.addEventListener("playing",function(){r=this.map.style.animationLoop.set(1/0),this.map._rerender()}.bind(this)),this.video.addEventListener("pause",function(){this.map.style.animationLoop.cancel(r)}.bind(this)),this._loaded=!0,this.map&&(this.video.play(),this.setCoordinates(t.coordinates))}}.bind(this))}var i=t("../util/util"),o=t("./tile"),a=t("./tile_coord"),s=t("../geo/lng_lat"),l=t("point-geometry"),u=t("../util/evented"),c=t("../util/ajax"),f=t("../data/bucket").EXTENT,h=t("../render/draw_raster").RasterBoundsArray,d=t("../data/buffer"),p=t("../render/vertex_array_object");e.exports=r,r.prototype=i.inherit(u,{roundZoom:!0,getVideo:function(){return this.video},onAdd:function(t){this.map=t,this.video&&(this.video.play(),this.setCoordinates(this.coordinates))},setCoordinates:function(t){this.coordinates=t;var e=this.map,n=t.map(function(t){return e.transform.locationCoordinate(s.convert(t)).zoomTo(0)}),r=this.centerCoord=i.getCoordinatesCenter(n);r.column=Math.round(r.column),r.row=Math.round(r.row);var u=n.map(function(t){var e=t.zoomTo(r.zoom);return new l(Math.round((e.column-r.column)*f),Math.round((e.row-r.row)*f))}),c=32767,m=new h;return m.emplaceBack(u[0].x,u[0].y,0,0),m.emplaceBack(u[1].x,u[1].y,c,0),m.emplaceBack(u[3].x,u[3].y,0,c),m.emplaceBack(u[2].x,u[2].y,c,c),this.tile=new o(new a(r.zoom,r.column,r.row)),this.tile.buckets={},this.tile.boundsBuffer=new d(m.serialize(),h.serialize(),d.BufferType.VERTEX),this.tile.boundsVAO=new p,this.fire("change"),this},loaded:function(){return this.video&&this.video.readyState>=2},update:function(){},reload:function(){},prepare:function(){if(this._loaded&&!(this.video.readyState<2)){var t=this.map.painter.gl;this.tile.texture?(t.bindTexture(t.TEXTURE_2D,this.tile.texture),t.texSubImage2D(t.TEXTURE_2D,0,0,0,t.RGBA,t.UNSIGNED_BYTE,this.video)):(this.tile.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.tile.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texImage2D(t.TEXTURE_2D,0,t.RGBA,t.RGBA,t.UNSIGNED_BYTE,this.video)),this._currentTime=this.video.currentTime}},getVisibleCoordinates:function(){return this.tile?[this.tile.coord]:[]},getTile:function(){return this.tile},serialize:function(){return{type:"video",urls:this.urls,coordinates:this.coordinates}}})},{"../data/bucket":67,"../data/buffer":72,"../geo/lng_lat":76,"../render/draw_raster":87,"../render/vertex_array_object":93,"../util/ajax":154,"../util/evented":161,"../util/util":169,"./tile":100,"./tile_coord":101,"point-geometry":174}],105:[function(t,e,n){"use strict";function r(t){this.self=t,this.actor=new o(t,this),this.loading={},this.loaded={},this.geoJSONIndexes={}}function i(t){var e={};for(var n in t){var r=t[n],i=r.ref||r.id,o=t[i];o.layout&&"none"===o.layout.visibility||(e[i]=e[i]||[],n===i?e[i].unshift(r):e[i].push(r))}return e}var o=t("../util/actor"),a=t("./worker_tile"),s=t("../style/style_layer"),l=t("../util/util"),u=t("../util/ajax"),c=t("vector-tile"),f=t("pbf"),h=t("supercluster"),d=t("geojson-vt"),p=t("geojson-rewind"),m=t("./geojson_wrapper"),g=t("vt-pbf");e.exports=function(t){return new r(t)},l.extend(r.prototype,{"set layers":function(t){function e(t){var e=s.create(t,t.ref&&n.layers[t.ref]);e.updatePaintTransitions({},{transition:!1}),n.layers[e.id]=e}this.layers={};for(var n=this,r=[],o=0;o<t.length;o++){var a=t[o];"fill"!==a.type&&"line"!==a.type&&"circle"!==a.type&&"symbol"!==a.type||(a.ref?r.push(o):e(a))}for(var l=0;l<r.length;l++)e(t[r[l]]);this.layerFamilies=i(this.layers)},"update layers":function(t){function e(t){var e=o.layers[t.ref];o.layers[t.id]?o.layers[t.id].set(t,e):o.layers[t.id]=s.create(t,e),o.layers[t.id].updatePaintTransitions({},{transition:!1})}var n,r,o=this;for(n in t)r=t[n],r.ref&&e(r);for(n in t)r=t[n],r.ref||e(r);this.layerFamilies=i(this.layers)},"load tile":function(t,e){function n(t,n){return delete this.loading[r][i],t?e(t):(o.data=new c.VectorTile(new f(new Uint8Array(n))),o.parse(o.data,this.layerFamilies,this.actor,n,e),this.loaded[r]=this.loaded[r]||{},void(this.loaded[r][i]=o))}var r=t.source,i=t.uid;this.loading[r]||(this.loading[r]={});var o=this.loading[r][i]=new a(t);o.xhr=u.getArrayBuffer(t.url,n.bind(this))},"reload tile":function(t,e){var n=this.loaded[t.source],r=t.uid;if(n&&n[r]){var i=n[r];i.parse(i.data,this.layerFamilies,this.actor,t.rawTileData,e)}},"abort tile":function(t){var e=this.loading[t.source],n=t.uid;e&&e[n]&&(e[n].xhr.abort(),delete e[n])},"remove tile":function(t){var e=this.loaded[t.source],n=t.uid;e&&e[n]&&delete e[n]},"redo placement":function(t,e){var n=this.loaded[t.source],r=this.loading[t.source],i=t.uid;if(n&&n[i]){var o=n[i],a=o.redoPlacement(t.angle,t.pitch,t.showCollisionBoxes);a.result&&e(null,a.result,a.transferables)}else r&&r[i]&&(r[i].angle=t.angle)},"parse geojson":function(t,e){var n=function(n,r){if(p(r,!0),n)return e(n);if("object"!=typeof r)return e(new Error("Input data is not a valid GeoJSON object."));try{this.geoJSONIndexes[t.source]=t.cluster?h(t.superclusterOptions).load(r.features):d(r,t.geojsonVtOptions)}catch(t){return e(t)}e(null)}.bind(this);if(t.url)u.getJSON(t.url,n);else{if("string"!=typeof t.data)return e(new Error("Input data is not a valid GeoJSON object."));n(null,JSON.parse(t.data))}},"load geojson tile":function(t,e){var n=t.source,r=t.coord;if(!this.geoJSONIndexes[n])return e(null,null);var i=this.geoJSONIndexes[n].getTile(Math.min(r.z,t.maxZoom),r.x,r.y),o=i?new a(t):void 0;if(this.loaded[n]=this.loaded[n]||{},this.loaded[n][t.uid]=o,!i)return e(null,null);var s=new m(i.features);s.name="_geojsonTileLayer";var l=g({layers:{_geojsonTileLayer:s}}).buffer;o.parse(s,this.layerFamilies,this.actor,l,e)}})},{"../style/style_layer":113,"../util/actor":153,"../util/ajax":154,"../util/util":169,"./geojson_wrapper":95,"./worker_tile":106,"geojson-rewind":14,"geojson-vt":18,pbf:173,supercluster:178,"vector-tile":184,"vt-pbf":188}],106:[function(t,e,n){"use strict";function r(t){this.coord=t.coord,this.uid=t.uid,this.zoom=t.zoom,this.tileSize=t.tileSize,this.source=t.source,this.overscaling=t.overscaling,this.angle=t.angle,this.pitch=t.pitch,this.showCollisionBoxes=t.showCollisionBoxes}function i(t){for(var e in t.arrayGroups)for(var n=t.arrayGroups[e],r=0;r<n.length;r++){var i=n[r];for(var o in i){var a=i[o];for(var s in a)if(a[s].length>0)return!0}}return!1}function o(t){return t.serialize()}function a(t){var e=[];for(var n in t){var r=t[n];for(var i in r.arrayGroups)for(var o=r.arrayGroups[i],a=0;a<o.length;a++){var s=o[a];for(var l in s){var u=s[l];for(var c in u)e.push(u[c].arrayBuffer)}}}return e}function s(t){return t.id}var l=t("../data/feature_index"),u=t("../symbol/collision_tile"),c=t("../data/bucket"),f=t("../symbol/collision_box"),h=t("../util/dictionary_coder");e.exports=r,r.prototype.parse=function(t,e,n,r,d){function p(t,e){for(var n=0;n<t.length;n++){var r=t.feature(n);r.index=n;for(var i in 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0===e.lastIntegerZoom&&(e.lastIntegerZoom=Math.floor(t),e.lastIntegerZoomTime=0,e.lastZoom=t),Math.floor(e.lastZoom)<Math.floor(t)?(e.lastIntegerZoom=Math.floor(t),e.lastIntegerZoomTime=Date.now()):Math.floor(e.lastZoom)>Math.floor(t)&&(e.lastIntegerZoom=Math.floor(t+1),e.lastIntegerZoomTime=Date.now()),e.lastZoom=t},_checkLoaded:function(){if(!this._loaded)throw new Error("Style is not done loading")},update:function(t,e){if(!this._updates.changed)return this;if(this._updates.allLayers)this._groupLayers(),this._updateWorkerLayers();else{var n=Object.keys(this._updates.layers);n.length&&this._updateWorkerLayers(n)}var r,i=Object.keys(this._updates.sources);for(r=0;r<i.length;r++)this._reloadSource(i[r]);for(r=0;r<this._updates.events.length;r++){var o=this._updates.events[r];this.fire(o[0],o[1])}return this._applyClasses(t,e),this._updates.changed&&this.fire("change"),this._resetUpdates(),this},_resetUpdates:function(){this._updates={events:[],layers:{},sources:{},paintProps:{}}},addSource:function(t,e){if(this._checkLoaded(),void 0!==this.sources[t])throw new Error("There is already a source with this ID");return!v.is(e)&&this._handleErrors(g.source,"sources."+t,e)?this:(e=v.create(e),this.sources[t]=e,e.id=t,e.style=this,e.dispatcher=this.dispatcher,e.on("load",this._forwardSourceEvent).on("error",this._forwardSourceEvent).on("change",this._forwardSourceEvent).on("tile.add",this._forwardTileEvent).on("tile.load",this._forwardTileEvent).on("tile.error",this._forwardTileEvent).on("tile.remove",this._forwardTileEvent).on("tile.stats",this._forwardTileEvent),this._updates.events.push(["source.add",{source:e}]),this._updates.changed=!0,this)},removeSource:function(t){if(this._checkLoaded(),void 0===this.sources[t])throw new Error("There is no source with this ID");var e=this.sources[t];return delete this.sources[t],e.off("load",this._forwardSourceEvent).off("error",this._forwardSourceEvent).off("change",this._forwardSourceEvent).off("tile.add",this._forwardTileEvent).off("tile.load",this._forwardTileEvent).off("tile.error",this._forwardTileEvent).off("tile.remove",this._forwardTileEvent).off("tile.stats",this._forwardTileEvent),this._updates.events.push(["source.remove",{source:e}]),this._updates.changed=!0,this},getSource:function(t){return this.sources[t]},addLayer:function(t,e){if(this._checkLoaded(),!(t instanceof o)){if(this._handleErrors(g.layer,"layers."+t.id,t,!1,{arrayIndex:-1}))return this;var n=t.ref&&this.getLayer(t.ref);t=o.create(t,n)}return 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r.minzoom===e&&r.maxzoom===n?this:(null!=e&&(r.minzoom=e),null!=n&&(r.maxzoom=n),this._updateLayer(r))},setFilter:function(t,e){this._checkLoaded();var n=this.getReferentLayer(t);return this._handleErrors(g.filter,"layers."+n.id+".filter",e)?this:c.deepEqual(n.filter,e)?this:(n.filter=c.clone(e),this._updateLayer(n))},getFilter:function(t){return this.getReferentLayer(t).filter},setLayoutProperty:function(t,e,n){this._checkLoaded();var r=this.getReferentLayer(t);return c.deepEqual(r.getLayoutProperty(e),n)?this:(r.setLayoutProperty(e,n),this._updateLayer(r))},getLayoutProperty:function(t,e){return this.getReferentLayer(t).getLayoutProperty(e)},setPaintProperty:function(t,e,n,r){this._checkLoaded();var i=this.getLayer(t);if(c.deepEqual(i.getPaintProperty(e,r),n))return this;var o=i.isPaintValueFeatureConstant(e);i.setPaintProperty(e,n,r);var a=!(x.isFunctionDefinition(n)&&"$zoom"!==n.property&&void 0!==n.property);return 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n="color"===this.type?a(this.value):e;if(this.calculate=o[t.function||"piecewise-constant"](n),this.isFeatureConstant=this.calculate.isFeatureConstant,this.isZoomConstant=this.calculate.isZoomConstant,"piecewise-constant"===t.function&&t.transition&&(this.calculate=i(this.calculate)),!this.isFeatureConstant&&!this.isZoomConstant){this.stopZoomLevels=[];for(var r=[],l=this.value.stops,u=0;u<this.value.stops.length;u++){var c=l[u][0].zoom;this.stopZoomLevels.indexOf(c)<0&&(this.stopZoomLevels.push(c),r.push([c,r.length]))}this.calculateInterpolationT=o.interpolated({stops:r,base:e.base})}}function i(t){return function(e,n){var r,i,o,a=e.zoom,s=e.zoomHistory,l=e.duration,u=a%1,c=Math.min((Date.now()-s.lastIntegerZoomTime)/l,1),f=1,h=1;return a>s.lastIntegerZoom?(r=u+(1-u)*c,f*=2,i=t({zoom:a-1},n),o=t({zoom:a},n)):(r=1-(1-c)*u,o=t({zoom:a},n),i=t({zoom:a+1},n),f/=2),{from:i,fromScale:f,to:o,toScale:h,t:r}}}var o=t("./style_function"),a=t("./parse_color"),s=t("../util/util");e.exports=r},{"../util/util":169,"./parse_color":109,"./style_function":112}],112:[function(t,e,n){"use strict";var r=t("mapbox-gl-function");n.interpolated=function(t){var e=r.interpolated(t),n=function(t,n){return e(t&&t.zoom,n||{})};return n.isFeatureConstant=e.isFeatureConstant,n.isZoomConstant=e.isZoomConstant,n},n["piecewise-constant"]=function(t){var e=r["piecewise-constant"](t),n=function(t,n){return e(t&&t.zoom,n||{})};return n.isFeatureConstant=e.isFeatureConstant,n.isZoomConstant=e.isZoomConstant,n},n.isFunctionDefinition=r.isFunctionDefinition},{"mapbox-gl-function":40}],113:[function(t,e,n){"use strict";function r(t,e){this.set(t,e)}function i(t){return t.value}var o=t("../util/util"),a=t("./style_transition"),s=t("./style_declaration"),l=t("./style_spec"),u=t("./validate_style"),c=t("./parse_color"),f=t("../util/evented");e.exports=r;var h="-transition";r.create=function(e,n){var r={background:t("./style_layer/background_style_layer"),circle:t("./style_layer/circle_style_layer"),fill:t("./style_layer/fill_style_layer"),line:t("./style_layer/line_style_layer"),raster:t("./style_layer/raster_style_layer"),symbol:t("./style_layer/symbol_style_layer")};return new r[(n||e).type](e,n)},r.prototype=o.inherit(f,{set:function(t,e){this.id=t.id,this.ref=t.ref,this.metadata=t.metadata,this.type=(e||t).type,this.source=(e||t).source,this.sourceLayer=(e||t)["source-layer"],this.minzoom=(e||t).minzoom,this.maxzoom=(e||t).maxzoom,this.filter=(e||t).filter,this.paint={},this.layout={},this._paintSpecifications=l["paint_"+this.type],this._layoutSpecifications=l["layout_"+this.type],this._paintTransitions={},this._paintTransitionOptions={},this._paintDeclarations={},this._layoutDeclarations={},this._layoutFunctions={};var n,r;for(var i in t){var o=i.match(/^paint(?:\.(.*))?$/);if(o){var a=o[1]||"";for(n in t[i])this.setPaintProperty(n,t[i][n],a)}}if(this.ref)this._layoutDeclarations=e._layoutDeclarations;else for(r in t.layout)this.setLayoutProperty(r,t.layout[r]);for(n in this._paintSpecifications)this.paint[n]=this.getPaintValue(n);for(r in this._layoutSpecifications)this._updateLayoutValue(r)},setLayoutProperty:function(t,e){if(null==e)delete this._layoutDeclarations[t];else{var n="layers."+this.id+".layout."+t;if(this._handleErrors(u.layoutProperty,n,t,e))return;this._layoutDeclarations[t]=new s(this._layoutSpecifications[t],e)}this._updateLayoutValue(t)},getLayoutProperty:function(t){return this._layoutDeclarations[t]&&this._layoutDeclarations[t].value},getLayoutValue:function(t,e,n){var r=this._layoutSpecifications[t],i=this._layoutDeclarations[t];return i?i.calculate(e,n):r.default},setPaintProperty:function(t,e,n){var r="layers."+this.id+(n?'["paint.'+n+'"].':".paint.")+t;if(o.endsWith(t,h))if(this._paintTransitionOptions[n||""]||(this._paintTransitionOptions[n||""]={}),null===e||void 0===e)delete this._paintTransitionOptions[n||""][t];else{if(this._handleErrors(u.paintProperty,r,t,e))return;this._paintTransitionOptions[n||""][t]=e}else if(this._paintDeclarations[n||""]||(this._paintDeclarations[n||""]={}),null===e||void 0===e)delete this._paintDeclarations[n||""][t];else{if(this._handleErrors(u.paintProperty,r,t,e))return;this._paintDeclarations[n||""][t]=new s(this._paintSpecifications[t],e)}},getPaintProperty:function(t,e){return e=e||"",o.endsWith(t,h)?this._paintTransitionOptions[e]&&this._paintTransitionOptions[e][t]:this._paintDeclarations[e]&&this._paintDeclarations[e][t]&&this._paintDeclarations[e][t].value},getPaintValue:function(t,e,n){var r=this._paintSpecifications[t],i=this._paintTransitions[t];return i?i.calculate(e,n):"color"===r.type&&r.default?c(r.default):r.default},getPaintValueStopZoomLevels:function(t){var e=this._paintTransitions[t];
++return e?e.declaration.stopZoomLevels:[]},getPaintInterpolationT:function(t,e){var n=this._paintTransitions[t];return n.declaration.calculateInterpolationT({zoom:e})},isPaintValueFeatureConstant:function(t){var e=this._paintTransitions[t];return!e||e.declaration.isFeatureConstant},isPaintValueZoomConstant:function(t){var e=this._paintTransitions[t];return!e||e.declaration.isZoomConstant},isHidden:function(t){return!!(this.minzoom&&t<this.minzoom)||(!!(this.maxzoom&&t>=this.maxzoom)||("none"===this.layout.visibility||0===this.paint[this.type+"-opacity"]))},updatePaintTransitions:function(t,e,n,r){for(var i=o.extend({},this._paintDeclarations[""]),a=0;a<t.length;a++)o.extend(i,this._paintDeclarations[t[a]]);var s;for(s in i)this._applyPaintDeclaration(s,i[s],e,n,r);for(s in this._paintTransitions)s in i||this._applyPaintDeclaration(s,null,e,n,r)},updatePaintTransition:function(t,e,n,r,i){for(var o=this._paintDeclarations[""][t],a=0;a<e.length;a++){var s=this._paintDeclarations[e[a]];s&&s[t]&&(o=s[t])}this._applyPaintDeclaration(t,o,n,r,i)},recalculate:function(t,e){for(var n in this._paintTransitions)this.paint[n]=this.getPaintValue(n,{zoom:t,zoomHistory:e});for(var r in this._layoutFunctions)this.layout[r]=this.getLayoutValue(r,{zoom:t,zoomHistory:e})},serialize:function(t){var e={id:this.id,ref:this.ref,metadata:this.metadata,minzoom:this.minzoom,maxzoom:this.maxzoom};for(var n in this._paintDeclarations){var r=""===n?"paint":"paint."+n;e[r]=o.mapObject(this._paintDeclarations[n],i)}return(!this.ref||t&&t.includeRefProperties)&&o.extend(e,{type:this.type,source:this.source,"source-layer":this.sourceLayer,filter:this.filter,layout:o.mapObject(this._layoutDeclarations,i)}),o.filterObject(e,function(t,e){return void 0!==t&&!("layout"===e&&!Object.keys(t).length)})},_applyPaintDeclaration:function(t,e,n,r,i){var l=n.transition?this._paintTransitions[t]:void 0;if(null===e||void 0===e){var u=this._paintSpecifications[t];e=new s(u,u.default)}if(!l||l.declaration.json!==e.json){var c=o.extend({duration:300,delay:0},r,this.getPaintProperty(t+h)),f=this._paintTransitions[t]=new a(e,l,c);f.instant()||(f.loopID=i.set(f.endTime-Date.now())),l&&i.cancel(l.loopID)}},_updateLayoutValue:function(t){var e=this._layoutDeclarations[t];e&&e.isFunction?this._layoutFunctions[t]=!0:(delete this._layoutFunctions[t],this.layout[t]=this.getLayoutValue(t))},_handleErrors:function(t,e,n,r){return u.emitErrors(this,t.call(u,{key:e,layerType:this.type,objectKey:n,value:r,styleSpec:l,style:{glyphs:!0,sprite:!0}}))}})},{"../util/evented":161,"../util/util":169,"./parse_color":109,"./style_declaration":111,"./style_layer/background_style_layer":114,"./style_layer/circle_style_layer":115,"./style_layer/fill_style_layer":116,"./style_layer/line_style_layer":117,"./style_layer/raster_style_layer":118,"./style_layer/symbol_style_layer":119,"./style_spec":120,"./style_transition":121,"./validate_style":122}],114:[function(t,e,n){"use strict";function r(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=r,r.prototype=i.inherit(o,{})},{"../../util/util":169,"../style_layer":113}],115:[function(t,e,n){"use strict";function r(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=r,r.prototype=i.inherit(o,{})},{"../../util/util":169,"../style_layer":113}],116:[function(t,e,n){"use strict";function r(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=r,r.prototype=i.inherit(o,{})},{"../../util/util":169,"../style_layer":113}],117:[function(t,e,n){"use strict";function r(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=r,r.prototype=i.inherit(o,{getPaintValue:function(t,e,n){var r=o.prototype.getPaintValue.apply(this,arguments);if(r&&"line-dasharray"===t){var i=Math.floor(e.zoom);this._flooredZoom!==i&&(this._flooredZoom=i,this._flooredLineWidth=this.getPaintValue("line-width",e,n)),r.fromScale*=this._flooredLineWidth,r.toScale*=this._flooredLineWidth}return r}})},{"../../util/util":169,"../style_layer":113}],118:[function(t,e,n){"use strict";function r(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=r,r.prototype=i.inherit(o,{})},{"../../util/util":169,"../style_layer":113}],119:[function(t,e,n){"use strict";function r(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=r,r.prototype=i.inherit(o,{isHidden:function(){if(o.prototype.isHidden.apply(this,arguments))return!0;var t=0===this.paint["text-opacity"]||!this.layout["text-field"],e=0===this.paint["icon-opacity"]||!this.layout["icon-image"];return!(!t||!e)},getLayoutValue:function(t,e,n){return("text-rotation-alignment"!==t||"line"!==this.getLayoutValue("symbol-placement",e,n)||this.getLayoutProperty("text-rotation-alignment"))&&("icon-rotation-alignment"!==t||"line"!==this.getLayoutValue("symbol-placement",e,n)||this.getLayoutProperty("icon-rotation-alignment"))?o.prototype.getLayoutValue.apply(this,arguments):"map"}})},{"../../util/util":169,"../style_layer":113}],120:[function(t,e,n){"use strict";e.exports=t("mapbox-gl-style-spec/reference/latest")},{"mapbox-gl-style-spec/reference/latest":63}],121:[function(t,e,n){"use strict";function r(t,e,n){this.declaration=t,this.startTime=this.endTime=(new Date).getTime();var r=t.type;"string"!==r&&"array"!==r||!t.transitionable?this.interp=a[r]:this.interp=i,this.oldTransition=e,this.duration=n.duration||0,this.delay=n.delay||0,this.instant()||(this.endTime=this.startTime+this.duration+this.delay,this.ease=o.easeCubicInOut),e&&e.endTime<=this.startTime&&delete e.oldTransition}function i(t,e,n){return{from:t.to,fromScale:t.toScale,to:e.to,toScale:e.toScale,t:n}}var o=t("../util/util"),a=t("../util/interpolate");e.exports=r,r.prototype.instant=function(){return!this.oldTransition||!this.interp||0===this.duration&&0===this.delay},r.prototype.calculate=function(t,e){var n=this.declaration.calculate(o.extend({},t,{duration:this.duration}),e);if(this.instant())return n;var r=t.time||Date.now();if(r<this.endTime){var i=this.oldTransition.calculate(o.extend({},t,{time:this.startTime}),e),a=this.ease((r-this.startTime-this.delay)/this.duration);n=this.interp(i,n,a)}return n}},{"../util/interpolate":163,"../util/util":169}],122:[function(t,e,n){"use 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d=c.angleTo(f)-f.angleTo(h);for(d=Math.abs((d+3*Math.PI)%(2*Math.PI)-Math.PI),l.push({distance:s,angleDelta:d}),u+=d;s-l[0].distance>r;)u-=l.shift().angleDelta;if(u>i)return!1;a++,s+=f.dist(h)}return!0}e.exports=r},{}],125:[function(t,e,n){"use strict";function r(t,e,n,r,o){for(var a=[],s=0;s<t.length;s++)for(var l,u=t[s],c=0;c<u.length-1;c++){var f=u[c],h=u[c+1];f.x<e&&h.x<e||(f.x<e?f=new i(e,f.y+(h.y-f.y)*((e-f.x)/(h.x-f.x)))._round():h.x<e&&(h=new i(e,f.y+(h.y-f.y)*((e-f.x)/(h.x-f.x)))._round()),f.y<n&&h.y<n||(f.y<n?f=new i(f.x+(h.x-f.x)*((n-f.y)/(h.y-f.y)),n)._round():h.y<n&&(h=new i(f.x+(h.x-f.x)*((n-f.y)/(h.y-f.y)),n)._round()),f.x>=r&&h.x>=r||(f.x>=r?f=new i(r,f.y+(h.y-f.y)*((r-f.x)/(h.x-f.x)))._round():h.x>=r&&(h=new i(r,f.y+(h.y-f.y)*((r-f.x)/(h.x-f.x)))._round()),f.y>=o&&h.y>=o||(f.y>=o?f=new i(f.x+(h.x-f.x)*((o-f.y)/(h.y-f.y)),o)._round():h.y>=o&&(h=new i(f.x+(h.x-f.x)*((o-f.y)/(h.y-f.y)),o)._round()),l&&f.equals(l[l.length-1])||(l=[f],a.push(l)),l.push(h)))))}return a}var i=t("point-geometry");e.exports=r},{"point-geometry":174}],126:[function(t,e,n){"use strict";var r=t("../util/struct_array"),i=t("../util/util"),o=t("point-geometry"),a=e.exports=new r({members:[{type:"Int16",name:"anchorPointX"},{type:"Int16",name:"anchorPointY"},{type:"Int16",name:"x1"},{type:"Int16",name:"y1"},{type:"Int16",name:"x2"},{type:"Int16",name:"y2"},{type:"Float32",name:"maxScale"},{type:"Uint32",name:"featureIndex"},{type:"Uint16",name:"sourceLayerIndex"},{type:"Uint16",name:"bucketIndex"},{type:"Int16",name:"bbox0"},{type:"Int16",name:"bbox1"},{type:"Int16",name:"bbox2"},{type:"Int16",name:"bbox3"},{type:"Float32",name:"placementScale"}]});i.extendAll(a.prototype.StructType.prototype,{get anchorPoint(){return new o(this.anchorPointX,this.anchorPointY)}})},{"../util/struct_array":167,"../util/util":169,"point-geometry":174}],127:[function(t,e,n){"use strict";function r(t,e,n,r,i,o,a,s,l,u,c){var f=a.top*s-l,h=a.bottom*s+l,d=a.left*s-l,p=a.right*s+l;if(this.boxStartIndex=t.length,u){var m=h-f,g=p-d;if(m>0)if(m=Math.max(10*s,m),c){var v=e[n.segment+1].sub(e[n.segment])._unit()._mult(g),y=[n.sub(v),n.add(v)];this._addLineCollisionBoxes(t,y,n,0,g,m,r,i,o)}else this._addLineCollisionBoxes(t,e,n,n.segment,g,m,r,i,o)}else t.emplaceBack(n.x,n.y,d,f,p,h,1/0,r,i,o,0,0,0,0,0);this.boxEndIndex=t.length}e.exports=r,r.prototype._addLineCollisionBoxes=function(t,e,n,r,i,o,a,s,l){var u=o/2,c=Math.floor(i/u),f=-o/2,h=this.boxes,d=n,p=r+1,m=f;do{if(p--,p<0)return h;m-=e[p].dist(d),d=e[p]}while(m>-i/2);for(var g=e[p].dist(e[p+1]),v=0;v<c;v++){for(var y=-i/2+v*u;m+g<y;){if(m+=g,p++,p+1>=e.length)return h;g=e[p].dist(e[p+1])}var x=y-m,b=e[p],_=e[p+1],w=_.sub(b)._unit()._mult(x)._add(b)._round(),M=Math.max(Math.abs(y-f)-u/2,0),k=i/2/M;t.emplaceBack(w.x,w.y,-o/2,-o/2,o/2,o/2,k,a,s,l,0,0,0,0,0)}return h}},{}],128:[function(t,e,n){"use strict";function r(t,e,n){if("object"==typeof t){var r=t;n=e,t=r.angle,e=r.pitch,this.grid=new a(r.grid),this.ignoredGrid=new a(r.ignoredGrid)}else this.grid=new a(o,12,6),this.ignoredGrid=new a(o,12,0);this.angle=t,this.pitch=e;var i=Math.sin(t),s=Math.cos(t);if(this.rotationMatrix=[s,-i,i,s],this.reverseRotationMatrix=[s,i,-i,s],this.yStretch=1/Math.cos(e/180*Math.PI),this.yStretch=Math.pow(this.yStretch,1.3),this.collisionBoxArray=n,0===n.length){n.emplaceBack();var l=32767;n.emplaceBack(0,0,0,-l,0,l,l,0,0,0,0,0,0,0,0,0),n.emplaceBack(o,0,0,-l,0,l,l,0,0,0,0,0,0,0,0,0),n.emplaceBack(0,0,-l,0,l,0,l,0,0,0,0,0,0,0,0,0),n.emplaceBack(0,o,-l,0,l,0,l,0,0,0,0,0,0,0,0,0)}this.tempCollisionBox=n.get(0),this.edges=[n.get(1),n.get(2),n.get(3),n.get(4)]}var i=t("point-geometry"),o=t("../data/bucket").EXTENT,a=t("grid-index");e.exports=r,r.prototype.serialize=function(){var t={angle:this.angle,pitch:this.pitch,grid:this.grid.toArrayBuffer(),ignoredGrid:this.ignoredGrid.toArrayBuffer()};return{data:t,transferables:[t.grid,t.ignoredGrid]}},r.prototype.minScale=.25,r.prototype.maxScale=2,r.prototype.placeCollisionFeature=function(t,e,n){for(var r=this.collisionBoxArray,o=this.minScale,a=this.rotationMatrix,s=this.yStretch,l=t.boxStartIndex;l<t.boxEndIndex;l++){var u=r.get(l),c=u.anchorPoint._matMult(a),f=c.x,h=c.y,d=f+u.x1,p=h+u.y1*s,m=f+u.x2,g=h+u.y2*s;if(u.bbox0=d,u.bbox1=p,u.bbox2=m,u.bbox3=g,!e)for(var v=this.grid.query(d,p,m,g),y=0;y<v.length;y++){var x=r.get(v[y]),b=x.anchorPoint._matMult(a);if(o=this.getPlacementScale(o,c,u,b,x),o>=this.maxScale)return o}if(n){var _;if(this.angle){var w=this.reverseRotationMatrix,M=new i(u.x1,u.y1).matMult(w),k=new i(u.x2,u.y1).matMult(w),S=new i(u.x1,u.y2).matMult(w),T=new i(u.x2,u.y2).matMult(w);_=this.tempCollisionBox,_.anchorPointX=u.anchorPoint.x,_.anchorPointY=u.anchorPoint.y,_.x1=Math.min(M.x,k.x,S.x,T.x),_.y1=Math.min(M.y,k.x,S.x,T.x),_.x2=Math.max(M.x,k.x,S.x,T.x),_.y2=Math.max(M.y,k.x,S.x,T.x),_.maxScale=u.maxScale}else _=u;for(var A=0;A<this.edges.length;A++){var z=this.edges[A];if(o=this.getPlacementScale(o,u.anchorPoint,_,z.anchorPoint,z),o>=this.maxScale)return o}}}return o},r.prototype.queryRenderedSymbols=function(t,e,n,r,o){var a={},s=[],l=this.collisionBoxArray,u=this.rotationMatrix,c=new i(t,e)._matMult(u),f=this.tempCollisionBox;f.anchorX=c.x,f.anchorY=c.y,f.x1=0,f.y1=0,f.x2=n-t,f.y2=r-e,f.maxScale=o,o=f.maxScale;for(var h=[c.x+f.x1/o,c.y+f.y1/o*this.yStretch,c.x+f.x2/o,c.y+f.y2/o*this.yStretch],d=this.grid.query(h[0],h[1],h[2],h[3]),p=this.ignoredGrid.query(h[0],h[1],h[2],h[3]),m=0;m<p.length;m++)d.push(p[m]);for(var g=0;g<d.length;g++){var v=l.get(d[g]),y=v.sourceLayerIndex,x=v.featureIndex;if(void 0===a[y]&&(a[y]={}),!a[y][x]){var b=v.anchorPoint.matMult(u),_=this.getPlacementScale(this.minScale,c,f,b,v);_>=o&&(a[y][x]=!0,s.push(d[g]))}}return s},r.prototype.getPlacementScale=function(t,e,n,r,i){var o=e.x-r.x,a=e.y-r.y,s=(i.x1-n.x2)/o,l=(i.x2-n.x1)/o,u=(i.y1-n.y2)*this.yStretch/a,c=(i.y2-n.y1)*this.yStretch/a;(isNaN(s)||isNaN(l))&&(s=l=1),(isNaN(u)||isNaN(c))&&(u=c=1);var f=Math.min(Math.max(s,l),Math.max(u,c)),h=i.maxScale,d=n.maxScale;return f>h&&(f=h),f>d&&(f=d),f>t&&f>=i.placementScale&&(t=f),t},r.prototype.insertCollisionFeature=function(t,e,n){for(var r=n?this.ignoredGrid:this.grid,i=this.collisionBoxArray,o=t.boxStartIndex;o<t.boxEndIndex;o++){var a=i.get(o);a.placementScale=e,e<this.maxScale&&r.insert(o,a.bbox0,a.bbox1,a.bbox2,a.bbox3)}}},{"../data/bucket":67,"grid-index":34,"point-geometry":174}],129:[function(t,e,n){"use strict";function r(t,e,n,r,o,a,s,l,u){var c=r?.6*a*s:0,f=Math.max(r?r.right-r.left:0,o?o.right-o.left:0),h=0===t[0].x||t[0].x===u||0===t[0].y||t[0].y===u;e-f*s<e/4&&(e=f*s+e/4);var d=2*a,p=h?e/2*l%e:(f/2+d)*s*l%e;return i(t,p,e,c,n,f*s,h,!1,u)}function i(t,e,n,r,l,u,c,f,h){for(var d=u/2,p=0,m=0;m<t.length-1;m++)p+=t[m].dist(t[m+1]);for(var g=0,v=e-n,y=[],x=0;x<t.length-1;x++){for(var b=t[x],_=t[x+1],w=b.dist(_),M=_.angleTo(b);v+n<g+w;){v+=n;var k=(v-g)/w,S=o(b.x,_.x,k),T=o(b.y,_.y,k);if(S>=0&&S<h&&T>=0&&T<h&&v-d>=0&&v+d<=p){var A=new a(S,T,M,x)._round();r&&!s(t,A,u,r,l)||y.push(A)}}g+=w}return f||y.length||c||(y=i(t,g/2,n,r,l,u,c,!0,h)),y}var o=t("../util/interpolate"),a=t("../symbol/anchor"),s=t("./check_max_angle");e.exports=r},{"../symbol/anchor":123,"../util/interpolate":163,"./check_max_angle":124}],130:[function(t,e,n){"use strict";function r(t,e){this.width=t,this.height=e,this.bin=new i(t,e),this.index={},this.ids={},this.data=new Uint8Array(t*e)}var i=t("shelf-pack");e.exports=r,r.prototype.getGlyphs=function(){var t,e,n,r={};for(var i in this.ids)t=i.split("#"),e=t[0],n=t[1],r[e]||(r[e]=[]),r[e].push(n);return r},r.prototype.getRects=function(){var t,e,n,r={};for(var i in this.ids)t=i.split("#"),e=t[0],n=t[1],r[e]||(r[e]={}),r[e][n]=this.index[i];return r},r.prototype.addGlyph=function(t,e,n,r){if(!n)return null;var i=e+"#"+n.id;if(this.index[i])return this.ids[i].indexOf(t)<0&&this.ids[i].push(t),this.index[i];if(!n.bitmap)return null;var o=n.width+2*r,a=n.height+2*r,s=1,l=o+2*s,u=a+2*s;l+=4-l%4,u+=4-u%4;var c=this.bin.packOne(l,u);if(c||(this.resize(),c=this.bin.packOne(l,u)),!c)return console.warn("glyph bitmap overflow"),null;this.index[i]=c,this.ids[i]=[t];for(var f=this.data,h=n.bitmap,d=0;d<a;d++)for(var p=this.width*(c.y+d+s)+c.x+s,m=o*d,g=0;g<o;g++)f[p+g]=h[m+g];return this.dirty=!0,c},r.prototype.resize=function(){var t=this.width,e=this.height;if(!(t>512||e>512)){this.texture&&(this.gl&&this.gl.deleteTexture(this.texture),this.texture=null),this.width*=2,this.height*=2,this.bin.resize(this.width,this.height);for(var n,r,i=new ArrayBuffer(this.width*this.height),o=0;o<e;o++)n=new Uint8Array(this.data.buffer,e*o,t),r=new Uint8Array(i,e*o*2,t),r.set(n);this.data=new Uint8Array(i)}},r.prototype.bind=function(t){this.gl=t,this.texture?t.bindTexture(t.TEXTURE_2D,this.texture):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texImage2D(t.TEXTURE_2D,0,t.ALPHA,this.width,this.height,0,t.ALPHA,t.UNSIGNED_BYTE,null))},r.prototype.updateTexture=function(t){this.bind(t),this.dirty&&(t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width,this.height,t.ALPHA,t.UNSIGNED_BYTE,this.data),this.dirty=!1)}},{"shelf-pack":177}],131:[function(t,e,n){"use strict";function r(t){this.url=t&&a(t),this.atlases={},this.stacks={},this.loading={}}function i(t,e,n){var r=1;this.advance=t.advance,this.left=t.left-n-r,this.top=t.top+n+r,this.rect=e}function o(t,e,n,r){return r=r||"abc",n.replace("{s}",r[t.length%r.length]).replace("{fontstack}",t).replace("{range}",e)}var a=t("../util/mapbox").normalizeGlyphsURL,s=t("../util/ajax").getArrayBuffer,l=t("../util/glyphs"),u=t("../symbol/glyph_atlas"),c=t("pbf");e.exports=r,r.prototype.getSimpleGlyphs=function(t,e,n,r){void 0===this.stacks[t]&&(this.stacks[t]={}),void 0===this.atlases[t]&&(this.atlases[t]=new u(128,128));for(var o,a={},s=this.stacks[t],l=this.atlases[t],c=3,f={},h=0,d=0;d<e.length;d++){var p=e[d];if(o=Math.floor(p/256),s[o]){var m=s[o].glyphs[p],g=l.addGlyph(n,t,m,c);m&&(a[p]=new i(m,g,c))}else void 0===f[o]&&(f[o]=[],h++),f[o].push(p)}h||r(void 0,a,t);var v=function(e,o,s){if(!e)for(var u=this.stacks[t][o]=s.stacks[0],d=0;d<f[o].length;d++){var p=f[o][d],m=u.glyphs[p],g=l.addGlyph(n,t,m,c);m&&(a[p]=new i(m,g,c))}h--,h||r(void 0,a,t)}.bind(this);for(var y in f)this.loadRange(t,y,v)},r.prototype.loadRange=function(t,e,n){if(256*e>65535)return n("glyphs > 65535 not supported");void 0===this.loading[t]&&(this.loading[t]={});var r=this.loading[t];if(r[e])r[e].push(n);else{r[e]=[n];var i=256*e+"-"+(256*e+255),a=o(t,i,this.url);s(a,function(t,n){for(var i=!t&&new l(new c(new Uint8Array(n))),o=0;o<r[e].length;o++)r[e][o](t,e,i);delete r[e]})}},r.prototype.getGlyphAtlas=function(t){return this.atlases[t]}},{"../symbol/glyph_atlas":130,"../util/ajax":154,"../util/glyphs":162,"../util/mapbox":166,pbf:173}],132:[function(t,e,n){"use strict";e.exports=function(t,e,n){function r(r){c.push(t[r]),f.push(n[r]),h.push(e[r]),d++}function i(t,e,n){var r=u[t];return delete u[t],u[e]=r,f[r][0].pop(),f[r][0]=f[r][0].concat(n[0]),r}function o(t,e,n){var r=l[e];return delete l[e],l[t]=r,f[r][0].shift(),f[r][0]=n[0].concat(f[r][0]),r}function a(t,e,n){var r=n?e[0][e[0].length-1]:e[0][0];return t+":"+r.x+":"+r.y}var s,l={},u={},c=[],f=[],h=[],d=0;for(s=0;s<t.length;s++){var p=n[s],m=e[s];if(m){var g=a(m,p),v=a(m,p,!0);if(g in u&&v in l&&u[g]!==l[v]){var y=o(g,v,p),x=i(g,v,f[y]);delete l[g],delete u[v],u[a(m,f[x],!0)]=x,f[y]=null}else g in u?i(g,v,p):v in l?o(g,v,p):(r(s),l[g]=d-1,u[v]=d-1)}else r(s)}return{features:c,textFeatures:h,geometries:f}}},{}],133:[function(t,e,n){"use strict";function r(t,e,n,r,i,o,a,s,l){this.anchorPoint=t,this.tl=e,this.tr=n,this.bl=r,this.br=i,this.tex=o,this.angle=a,this.minScale=s,this.maxScale=l}function i(t,e,n,i,o,a){var u=e.image.rect,c=1,f=e.left-c,h=f+u.w/e.image.pixelRatio,d=e.top-c,p=d+u.h/e.image.pixelRatio,m=new s(f,d),g=new s(h,d),v=new s(h,p),y=new s(f,p),x=o["icon-rotate"]*Math.PI/180;if(a){var b=i[t.segment];if(t.y===b.y&&t.x===b.x&&t.segment+1<i.length){var _=i[t.segment+1];x+=Math.atan2(t.y-_.y,t.x-_.x)+Math.PI}else x+=Math.atan2(t.y-b.y,t.x-b.x)}if(x){var w=Math.sin(x),M=Math.cos(x),k=[M,-w,w,M];m=m.matMult(k),g=g.matMult(k),y=y.matMult(k),v=v.matMult(k)}return[new r(new s(t.x,t.y),m,g,y,v,e.image.rect,0,l,1/0)]}function o(t,e,n,i,o,u){for(var c=o["text-rotate"]*Math.PI/180,f=o["text-keep-upright"],h=e.positionedGlyphs,d=[],p=0;p<h.length;p++){var m=h[p],g=m.glyph,v=g.rect;if(v){var y,x=(m.x+g.advance/2)*n,b=l;u?(y=[],b=a(y,t,x,i,t.segment,!0),f&&(b=Math.min(b,a(y,t,x,i,t.segment,!1)))):y=[{anchorPoint:new s(t.x,t.y),offset:0,angle:0,maxScale:1/0,minScale:l}];for(var _=m.x+g.left,w=m.y-g.top,M=_+v.w,k=w+v.h,S=new s(_,w),T=new s(M,w),A=new s(_,k),z=new s(M,k),E=0;E<y.length;E++){var L=y[E],I=S,D=T,P=A,C=z,O=L.angle+c;if(O){var F=Math.sin(O),R=Math.cos(O),j=[R,-F,F,R];I=I.matMult(j),D=D.matMult(j),P=P.matMult(j),C=C.matMult(j)}var N=Math.max(L.minScale,b),B=(t.angle+c+L.offset+2*Math.PI)%(2*Math.PI);d.push(new r(L.anchorPoint,I,D,P,C,v,B,N,L.maxScale))}}}return d}function a(t,e,n,r,i,o){var a=!o;n<0&&(o=!o),o&&i++;var u=new s(e.x,e.y),c=r[i],f=1/0;n=Math.abs(n);for(var h=l;;){var d=u.dist(c),p=n/d,m=Math.atan2(c.y-u.y,c.x-u.x);if(o||(m+=Math.PI),a&&(m+=Math.PI),t.push({anchorPoint:u,offset:a?Math.PI:0,minScale:p,maxScale:f,angle:(m+2*Math.PI)%(2*Math.PI)}),p<=h)break;for(u=c;u.equals(c);)if(i+=o?1:-1,c=r[i],!c)return p;var g=c.sub(u)._unit();u=u.sub(g._mult(d)),f=p}return h}var s=t("point-geometry");e.exports={getIconQuads:i,getGlyphQuads:o};var l=.5},{"point-geometry":174}],134:[function(t,e,n){"use strict";function r(t,e,n){for(var r=[],o=0,a=t.length;o<a;o++){var s=i(t[o].properties,e["text-field"]);if(s){s=s.toString();var l=e["text-transform"];"uppercase"===l?s=s.toLocaleUpperCase():"lowercase"===l&&(s=s.toLocaleLowerCase());for(var u=0;u<s.length;u++)n[s.charCodeAt(u)]=!0;r[o]=s}else r[o]=null}return r}var i=t("../util/token");e.exports=r},{"../util/token":168}],135:[function(t,e,n){"use strict";function r(t,e,n,r){this.codePoint=t,this.x=e,this.y=n,this.glyph=r}function i(t,e,n,r,i,o){this.positionedGlyphs=t,this.text=e,this.top=n,this.bottom=r,this.left=i,this.right=o}function o(t,e,n,o,s,l,u,c,f){for(var h=[],d=new i(h,t,f[1],f[1],f[0],f[0]),p=-17,m=0,g=p,v=0;v<t.length;v++){var y=t.charCodeAt(v),x=e[y];x&&(h.push(new r(y,m,g,x)),m+=x.advance+c)}return!!h.length&&(a(d,e,o,n,s,l,u,f),d)}function a(t,e,n,r,i,o,a,u){var c=null,d=0,p=0,m=0,g=0,v=t.positionedGlyphs;if(r)for(var y=0;y<v.length;y++){var x=v[y];if(x.x-=d,x.y+=n*m,x.x>r&&null!==c){var b=v[c+1].x;g=Math.max(b,g);for(var _=c+1;_<=y;_++)v[_].y+=n,v[_].x-=b;if(a){var w=c;f[v[c].codePoint]&&w--,s(v,e,p,w,a)}p=c+1,c=null,d+=b,m++}h[x.codePoint]&&(c=y)}var M=v[v.length-1],k=M.x+e[M.codePoint].advance;g=Math.max(g,k);var S=(m+1)*n;s(v,e,p,v.length-1,a),l(v,a,i,o,g,n,m,u),t.top+=-o*S,t.bottom=t.top+S,t.left+=-i*g,t.right=t.left+g}function s(t,e,n,r,i){for(var o=e[t[r].codePoint].advance,a=(t[r].x+o)*i,s=n;s<=r;s++)t[s].x-=a}function l(t,e,n,r,i,o,a,s){for(var l=(e-n)*i+s[0],u=(-r*(a+1)+.5)*o+s[1],c=0;c<t.length;c++)t[c].x+=l,t[c].y+=u}function u(t,e){if(!t||!t.rect)return null;var n=e["icon-offset"][0],r=e["icon-offset"][1],i=n-t.width/2,o=i+t.width,a=r-t.height/2,s=a+t.height;return new c(t,a,s,i,o)}function c(t,e,n,r,i){this.image=t,this.top=e,this.bottom=n,this.left=r,this.right=i}e.exports={shapeText:o,shapeIcon:u};var f={32:!0,8203:!0},h={32:!0,38:!0,43:!0,45:!0,47:!0,173:!0,183:!0,8203:!0,8208:!0,8211:!0}},{}],136:[function(t,e,n){"use strict";function r(t,e){this.width=t,this.height=e,this.bin=new a(t,e),this.images={},this.data=!1,this.texture=0,this.filter=0,this.pixelRatio=1,this.dirty=!0}function i(t,e,n,r,i,o,a,s,l,u,c){var f,h,d=r*e+n,p=s*o+a;if(c)for(p-=o,h=-1;h<=u;h++,d=((h+u)%u+r)*e+n,p+=o)for(f=-1;f<=l;f++)i[p+f]=t[d+(f+l)%l];else for(h=0;h<u;h++,d+=e,p+=o)for(f=0;f<l;f++)i[p+f]=t[d+f]}function o(t,e,n,r,i){this.rect=t,this.width=e,this.height=n,this.sdf=r,this.pixelRatio=i}var a=t("shelf-pack"),s=t("../util/browser");e.exports=r,r.prototype.allocateImage=function(t,e){t/=this.pixelRatio,e/=this.pixelRatio;var n=2,r=t+n+(4-(t+n)%4),i=e+n+(4-(e+n)%4),o=this.bin.packOne(r,i);return o?o:(console.warn("SpriteAtlas out of space."),null)},r.prototype.getImage=function(t,e){if(this.images[t])return this.images[t];if(!this.sprite)return null;var n=this.sprite.getSpritePosition(t);if(!n.width||!n.height)return null;var r=this.allocateImage(n.width,n.height);if(!r)return null;var i=new o(r,n.width/n.pixelRatio,n.height/n.pixelRatio,n.sdf,n.pixelRatio/this.pixelRatio);return this.images[t]=i,this.copy(r,n,e),i},r.prototype.getPosition=function(t,e){var n=this.getImage(t,e),r=n&&n.rect;if(!r)return null;var i=n.width*n.pixelRatio,o=n.height*n.pixelRatio,a=1;return{size:[n.width,n.height],tl:[(r.x+a)/this.width,(r.y+a)/this.height],br:[(r.x+a+i)/this.width,(r.y+a+o)/this.height]}},r.prototype.allocate=function(){if(!this.data){var t=Math.floor(this.width*this.pixelRatio),e=Math.floor(this.height*this.pixelRatio);this.data=new Uint32Array(t*e);for(var n=0;n<this.data.length;n++)this.data[n]=0}},r.prototype.copy=function(t,e,n){if(this.sprite.img.data){var r=new Uint32Array(this.sprite.img.data.buffer);this.allocate();var o=this.data,a=1;i(r,this.sprite.img.width,e.x,e.y,o,this.width*this.pixelRatio,(t.x+a)*this.pixelRatio,(t.y+a)*this.pixelRatio,e.width,e.height,n),this.dirty=!0}},r.prototype.setSprite=function(t){t&&(this.pixelRatio=s.devicePixelRatio>1?2:1,this.canvas&&(this.canvas.width=this.width*this.pixelRatio,this.canvas.height=this.height*this.pixelRatio)),this.sprite=t},r.prototype.addIcons=function(t,e){for(var n=0;n<t.length;n++)this.getImage(t[n]);e(null,this.images)},r.prototype.bind=function(t,e){var n=!1;this.texture?t.bindTexture(t.TEXTURE_2D,this.texture):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),n=!0);var r=e?t.LINEAR:t.NEAREST;r!==this.filter&&(t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,r),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,r),this.filter=r),this.dirty&&(this.allocate(),n?t.texImage2D(t.TEXTURE_2D,0,t.RGBA,this.width*this.pixelRatio,this.height*this.pixelRatio,0,t.RGBA,t.UNSIGNED_BYTE,new Uint8Array(this.data.buffer)):t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width*this.pixelRatio,this.height*this.pixelRatio,t.RGBA,t.UNSIGNED_BYTE,new Uint8Array(this.data.buffer)),this.dirty=!1)}},{"../util/browser":155,"shelf-pack":177}],137:[function(t,e,n){"use strict";var r=t("../util/util"),i=t("../util/interpolate"),o=t("../util/browser"),a=t("../geo/lng_lat"),s=t("../geo/lng_lat_bounds"),l=t("point-geometry"),u=e.exports=function(){};r.extend(u.prototype,{getCenter:function(){return this.transform.center},setCenter:function(t,e){return this.jumpTo({center:t},e),this},panBy:function(t,e,n){return this.panTo(this.transform.center,r.extend({offset:l.convert(t).mult(-1)},e),n),this},panTo:function(t,e,n){return this.easeTo(r.extend({center:t},e),n)},getZoom:function(){return this.transform.zoom},setZoom:function(t,e){return this.jumpTo({zoom:t},e),this},zoomTo:function(t,e,n){return this.easeTo(r.extend({zoom:t},e),n)},zoomIn:function(t,e){return this.zoomTo(this.getZoom()+1,t,e),this},zoomOut:function(t,e){return this.zoomTo(this.getZoom()-1,t,e),this},getBearing:function(){return this.transform.bearing},setBearing:function(t,e){return this.jumpTo({bearing:t},e),this},rotateTo:function(t,e,n){return this.easeTo(r.extend({bearing:t},e),n)},resetNorth:function(t,e){return this.rotateTo(0,r.extend({duration:1e3},t),e),this},snapToNorth:function(t,e){return Math.abs(this.getBearing())<this.options.bearingSnap?this.resetNorth(t,e):this},getPitch:function(){return this.transform.pitch},setPitch:function(t,e){return this.jumpTo({pitch:t},e),this},fitBounds:function(t,e,n){e=r.extend({padding:0,offset:[0,0],maxZoom:1/0},e),t=s.convert(t);var i=l.convert(e.offset),o=this.transform,a=o.project(t.getNorthWest()),u=o.project(t.getSouthEast()),c=u.sub(a),f=(o.width-2*e.padding-2*Math.abs(i.x))/c.x,h=(o.height-2*e.padding-2*Math.abs(i.y))/c.y;return e.center=o.unproject(a.add(u).div(2)),e.zoom=Math.min(o.scaleZoom(o.scale*Math.min(f,h)),e.maxZoom),e.bearing=0,e.linear?this.easeTo(e,n):this.flyTo(e,n)},jumpTo:function(t,e){this.stop();var n=this.transform,r=!1,i=!1,o=!1;return"zoom"in t&&n.zoom!==+t.zoom&&(r=!0,n.zoom=+t.zoom),"center"in t&&(n.center=a.convert(t.center)),"bearing"in t&&n.bearing!==+t.bearing&&(i=!0,n.bearing=+t.bearing),"pitch"in t&&n.pitch!==+t.pitch&&(o=!0,n.pitch=+t.pitch),this.fire("movestart",e).fire("move",e),r&&this.fire("zoomstart",e).fire("zoom",e).fire("zoomend",e),i&&this.fire("rotate",e),o&&this.fire("pitch",e),this.fire("moveend",e)},easeTo:function(t,e){this.stop(),t=r.extend({offset:[0,0],duration:500,easing:r.ease},t);var n,o,s=this.transform,u=l.convert(t.offset),c=this.getZoom(),f=this.getBearing(),h=this.getPitch(),d="zoom"in t?+t.zoom:c,p="bearing"in t?this._normalizeBearing(t.bearing,f):f,m="pitch"in t?+t.pitch:h;"center"in t?(n=a.convert(t.center),o=s.centerPoint.add(u)):"around"in t?(n=a.convert(t.around),o=s.locationPoint(n)):(o=s.centerPoint.add(u),n=s.pointLocation(o));var g=s.locationPoint(n);return t.animate===!1&&(t.duration=0),this.zooming=d!==c,this.rotating=f!==p,this.pitching=m!==h,t.noMoveStart||this.fire("movestart",e),this.zooming&&this.fire("zoomstart",e),clearTimeout(this._onEaseEnd),this._ease(function(t){this.zooming&&(s.zoom=i(c,d,t)),this.rotating&&(s.bearing=i(f,p,t)),this.pitching&&(s.pitch=i(h,m,t)),s.setLocationAtPoint(n,g.add(o.sub(g)._mult(t))),this.fire("move",e),this.zooming&&this.fire("zoom",e),this.rotating&&this.fire("rotate",e),this.pitching&&this.fire("pitch",e)},function(){t.delayEndEvents?this._onEaseEnd=setTimeout(this._easeToEnd.bind(this,e),t.delayEndEvents):this._easeToEnd(e)}.bind(this),t),this},_easeToEnd:function(t){this.zooming&&this.fire("zoomend",t),this.fire("moveend",t),this.zooming=!1,this.rotating=!1,this.pitching=!1},flyTo:function(t,e){function n(t){var e=(S*S-k*k+(t?-1:1)*E*E*T*T)/(2*(t?S:k)*E*T);return Math.log(Math.sqrt(e*e+1)-e)}function o(t){return(Math.exp(t)-Math.exp(-t))/2}function s(t){return(Math.exp(t)+Math.exp(-t))/2}function u(t){return o(t)/s(t)}this.stop(),t=r.extend({offset:[0,0],speed:1.2,curve:1.42,easing:r.ease},t);var c=this.transform,f=l.convert(t.offset),h=this.getZoom(),d=this.getBearing(),p=this.getPitch(),m="center"in t?a.convert(t.center):this.getCenter(),g="zoom"in t?+t.zoom:h,v="bearing"in t?this._normalizeBearing(t.bearing,d):d,y="pitch"in t?+t.pitch:p;Math.abs(c.center.lng)+Math.abs(m.lng)>180&&(c.center.lng>0&&m.lng<0?m.lng+=360:c.center.lng<0&&m.lng>0&&(m.lng-=360));var x=c.zoomScale(g-h),b=c.point,_="center"in t?c.project(m).sub(f.div(x)):b,w=c.worldSize,M=t.curve,k=Math.max(c.width,c.height),S=k/x,T=_.sub(b).mag();if("minZoom"in t){var A=r.clamp(Math.min(t.minZoom,h,g),c.minZoom,c.maxZoom),z=k/c.zoomScale(A-h);M=Math.sqrt(z/T*2)}var E=M*M,L=n(0),I=function(t){return s(L)/s(L+M*t)},D=function(t){return k*((s(L)*u(L+M*t)-o(L))/E)/T},P=(n(1)-L)/M;if(Math.abs(T)<1e-6){if(Math.abs(k-S)<1e-6)return this.easeTo(t);var C=S<k?-1:1;P=Math.abs(Math.log(S/k))/M,D=function(){return 0},I=function(t){return Math.exp(C*M*t)}}if("duration"in t)t.duration=+t.duration;else{var O="screenSpeed"in t?+t.screenSpeed/M:+t.speed;t.duration=1e3*P/O}return this.zooming=!0,d!==v&&(this.rotating=!0),p!==y&&(this.pitching=!0),this.fire("movestart",e),this.fire("zoomstart",e),this._ease(function(t){var n=t*P,r=D(n);c.zoom=h+c.scaleZoom(1/I(n)),c.center=c.unproject(b.add(_.sub(b).mult(r)),w),this.rotating&&(c.bearing=i(d,v,t)),this.pitching&&(c.pitch=i(p,y,t)),this.fire("move",e),this.fire("zoom",e),this.rotating&&this.fire("rotate",e),this.pitching&&this.fire("pitch",e)},function(){this.fire("zoomend",e),this.fire("moveend",e),this.zooming=!1,this.rotating=!1,this.pitching=!1},t),this},isEasing:function(){return!!this._abortFn},stop:function(){return this._abortFn&&(this._abortFn(),this._finishEase()),this},_ease:function(t,e,n){this._finishFn=e,this._abortFn=o.timed(function(e){t.call(this,n.easing(e)),1===e&&this._finishEase()},n.animate===!1?0:n.duration,this)},_finishEase:function(){delete this._abortFn;var t=this._finishFn;delete this._finishFn,t.call(this)},_normalizeBearing:function(t,e){t=r.wrap(t,-180,180);var n=Math.abs(t-e);return Math.abs(t-360-e)<n&&(t-=360),Math.abs(t+360-e)<n&&(t+=360),t},_updateEasing:function(t,e,n){var i;if(this.ease){var o=this.ease,a=(Date.now()-o.start)/o.duration,s=o.easing(a+.01)-o.easing(a),l=.27/Math.sqrt(s*s+1e-4)*.01,u=Math.sqrt(.0729-l*l);
++i=r.bezier(l,u,.25,1)}else i=n?r.bezier.apply(r,n):r.ease;return this.ease={start:(new Date).getTime(),to:Math.pow(2,e),duration:t,easing:i},i}})},{"../geo/lng_lat":76,"../geo/lng_lat_bounds":77,"../util/browser":155,"../util/interpolate":163,"../util/util":169,"point-geometry":174}],138:[function(t,e,n){"use strict";function r(t){a.setOptions(this,t)}var i=t("./control"),o=t("../../util/dom"),a=t("../../util/util");e.exports=r,r.createAttributionString=function(t){var e=[];for(var n in t){var r=t[n];r.attribution&&e.indexOf(r.attribution)<0&&e.push(r.attribution)}return e.sort(function(t,e){return t.length-e.length}),e=e.filter(function(t,n){for(var r=n+1;r<e.length;r++)if(e[r].indexOf(t)>=0)return!1;return!0}),e.join(" | ")},r.prototype=a.inherit(i,{options:{position:"bottom-right"},onAdd:function(t){var e="mapboxgl-ctrl-attrib",n=this._container=o.create("div",e,t.getContainer());return this._update(),t.on("source.load",this._update.bind(this)),t.on("source.change",this._update.bind(this)),t.on("source.remove",this._update.bind(this)),t.on("moveend",this._updateEditLink.bind(this)),n},_update:function(){this._map.style&&(this._container.innerHTML=r.createAttributionString(this._map.style.sources)),this._editLink=this._container.getElementsByClassName("mapbox-improve-map")[0],this._updateEditLink()},_updateEditLink:function(){if(this._editLink){var t=this._map.getCenter();this._editLink.href="https://www.mapbox.com/map-feedback/#/"+t.lng+"/"+t.lat+"/"+Math.round(this._map.getZoom()+1)}}})},{"../../util/dom":158,"../../util/util":169,"./control":139}],139:[function(t,e,n){"use strict";function r(){}e.exports=r,r.prototype={addTo:function(t){this._map=t;var e=this._container=this.onAdd(t);if(this.options&&this.options.position){var n=this.options.position,r=t._controlCorners[n];e.className+=" mapboxgl-ctrl",n.indexOf("bottom")!==-1?r.insertBefore(e,r.firstChild):r.appendChild(e)}return this},remove:function(){return this._container.parentNode.removeChild(this._container),this.onRemove&&this.onRemove(this._map),this._map=null,this}}},{}],140:[function(t,e,n){"use strict";function r(t){s.setOptions(this,t)}var i=t("./control"),o=t("../../util/browser"),a=t("../../util/dom"),s=t("../../util/util");e.exports=r;var l={enableHighAccuracy:!1,timeout:6e3};r.prototype=s.inherit(i,{options:{position:"top-right"},onAdd:function(t){var e="mapboxgl-ctrl",n=this._container=a.create("div",e+"-group",t.getContainer());return o.supportsGeolocation?(this._container.addEventListener("contextmenu",this._onContextMenu.bind(this)),this._geolocateButton=a.create("button",e+"-icon "+e+"-geolocate",this._container),this._geolocateButton.addEventListener("click",this._onClickGeolocate.bind(this)),n):n},_onContextMenu:function(t){t.preventDefault()},_onClickGeolocate:function(){navigator.geolocation.getCurrentPosition(this._success.bind(this),this._error.bind(this),l),this._timeoutId=setTimeout(this._finish.bind(this),1e4)},_success:function(t){this._map.jumpTo({center:[t.coords.longitude,t.coords.latitude],zoom:17,bearing:0,pitch:0}),this._finish()},_error:function(){this._finish()},_finish:function(){this._timeoutId&&clearTimeout(this._timeoutId),this._timeoutId=void 0}})},{"../../util/browser":155,"../../util/dom":158,"../../util/util":169,"./control":139}],141:[function(t,e,n){"use strict";function r(t){s.setOptions(this,t)}function i(t){return new MouseEvent(t.type,{button:2,buttons:2,bubbles:!0,cancelable:!0,detail:t.detail,view:t.view,screenX:t.screenX,screenY:t.screenY,clientX:t.clientX,clientY:t.clientY,movementX:t.movementX,movementY:t.movementY,ctrlKey:t.ctrlKey,shiftKey:t.shiftKey,altKey:t.altKey,metaKey:t.metaKey})}var o=t("./control"),a=t("../../util/dom"),s=t("../../util/util");e.exports=r,r.prototype=s.inherit(o,{options:{position:"top-right"},onAdd:function(t){var e="mapboxgl-ctrl",n=this._container=a.create("div",e+"-group",t.getContainer());return this._container.addEventListener("contextmenu",this._onContextMenu.bind(this)),this._zoomInButton=this._createButton(e+"-icon "+e+"-zoom-in",t.zoomIn.bind(t)),this._zoomOutButton=this._createButton(e+"-icon "+e+"-zoom-out",t.zoomOut.bind(t)),this._compass=this._createButton(e+"-icon "+e+"-compass",t.resetNorth.bind(t)),this._compassArrow=a.create("div","arrow",this._compass),this._compass.addEventListener("mousedown",this._onCompassDown.bind(this)),this._onCompassMove=this._onCompassMove.bind(this),this._onCompassUp=this._onCompassUp.bind(this),t.on("rotate",this._rotateCompassArrow.bind(this)),this._rotateCompassArrow(),this._el=t.getCanvasContainer(),n},_onContextMenu:function(t){t.preventDefault()},_onCompassDown:function(t){0===t.button&&(a.disableDrag(),document.addEventListener("mousemove",this._onCompassMove),document.addEventListener("mouseup",this._onCompassUp),this._el.dispatchEvent(i(t)),t.stopPropagation())},_onCompassMove:function(t){0===t.button&&(this._el.dispatchEvent(i(t)),t.stopPropagation())},_onCompassUp:function(t){0===t.button&&(document.removeEventListener("mousemove",this._onCompassMove),document.removeEventListener("mouseup",this._onCompassUp),a.enableDrag(),this._el.dispatchEvent(i(t)),t.stopPropagation())},_createButton:function(t,e){var n=a.create("button",t,this._container);return n.addEventListener("click",function(){e()}),n},_rotateCompassArrow:function(){var t="rotate("+this._map.transform.angle*(180/Math.PI)+"deg)";this._compassArrow.style.transform=t}})},{"../../util/dom":158,"../../util/util":169,"./control":139}],142:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),this._container=t.getContainer(),a.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../geo/lng_lat_bounds"),a=t("../../util/util");e.exports=r,r.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onMouseDown,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onMouseDown),this._enabled=!1)},_onMouseDown:function(t){t.shiftKey&&0===t.button&&(document.addEventListener("mousemove",this._onMouseMove,!1),document.addEventListener("keydown",this._onKeyDown,!1),document.addEventListener("mouseup",this._onMouseUp,!1),i.disableDrag(),this._startPos=i.mousePos(this._el,t),this._active=!0)},_onMouseMove:function(t){var e=this._startPos,n=i.mousePos(this._el,t);this._box||(this._box=i.create("div","mapboxgl-boxzoom",this._container),this._container.classList.add("mapboxgl-crosshair"),this._fireEvent("boxzoomstart",t));var r=Math.min(e.x,n.x),o=Math.max(e.x,n.x),a=Math.min(e.y,n.y),s=Math.max(e.y,n.y);i.setTransform(this._box,"translate("+r+"px,"+a+"px)"),this._box.style.width=o-r+"px",this._box.style.height=s-a+"px"},_onMouseUp:function(t){if(0===t.button){var e=this._startPos,n=i.mousePos(this._el,t),r=new o(this._map.unproject(e),this._map.unproject(n));this._finish(),e.x===n.x&&e.y===n.y?this._fireEvent("boxzoomcancel",t):this._map.fitBounds(r,{linear:!0}).fire("boxzoomend",{originalEvent:t,boxZoomBounds:r})}},_onKeyDown:function(t){27===t.keyCode&&(this._finish(),this._fireEvent("boxzoomcancel",t))},_finish:function(){this._active=!1,document.removeEventListener("mousemove",this._onMouseMove,!1),document.removeEventListener("keydown",this._onKeyDown,!1),document.removeEventListener("mouseup",this._onMouseUp,!1),this._container.classList.remove("mapboxgl-crosshair"),this._box&&(this._box.parentNode.removeChild(this._box),this._box=null),i.enableDrag()},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})}}},{"../../geo/lng_lat_bounds":77,"../../util/dom":158,"../../util/util":169}],143:[function(t,e,n){"use strict";function r(t){this._map=t,this._onDblClick=this._onDblClick.bind(this)}e.exports=r,r.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._map.on("dblclick",this._onDblClick),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._map.off("dblclick",this._onDblClick),this._enabled=!1)},_onDblClick:function(t){this._map.zoomTo(this._map.getZoom()+(t.originalEvent.shiftKey?-1:1),{around:t.lngLat})}}},{}],144:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),o.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../util/util");e.exports=r;var a=.3,s=o.bezier(0,0,a,1),l=1400,u=2500;r.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onDown),this._el.addEventListener("touchstart",this._onDown),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onDown),this._el.removeEventListener("touchstart",this._onDown),this._enabled=!1)},_onDown:function(t){this._ignoreEvent(t)||this.isActive()||(t.touches?(document.addEventListener("touchmove",this._onMove),document.addEventListener("touchend",this._onTouchEnd)):(document.addEventListener("mousemove",this._onMove),document.addEventListener("mouseup",this._onMouseUp)),this._active=!1,this._startPos=this._pos=i.mousePos(this._el,t),this._inertia=[[Date.now(),this._pos]])},_onMove:function(t){if(!this._ignoreEvent(t)){this.isActive()||(this._active=!0,this._fireEvent("dragstart",t),this._fireEvent("movestart",t));var e=i.mousePos(this._el,t),n=this._map;n.stop(),this._drainInertiaBuffer(),this._inertia.push([Date.now(),e]),n.transform.setLocationAtPoint(n.transform.pointLocation(this._pos),e),this._fireEvent("drag",t),this._fireEvent("move",t),this._pos=e,t.preventDefault()}},_onUp:function(t){if(this.isActive()){this._active=!1,this._fireEvent("dragend",t),this._drainInertiaBuffer();var e=function(){this._fireEvent("moveend",t)}.bind(this),n=this._inertia;if(n.length<2)return void e();var r=n[n.length-1],i=n[0],o=r[1].sub(i[1]),c=(r[0]-i[0])/1e3;if(0===c||r[1].equals(i[1]))return void e();var f=o.mult(a/c),h=f.mag();h>l&&(h=l,f._unit()._mult(h));var d=h/(u*a),p=f.mult(-d/2);this._map.panBy(p,{duration:1e3*d,easing:s,noMoveStart:!0},{originalEvent:t})}},_onMouseUp:function(t){this._ignoreEvent(t)||(this._onUp(t),document.removeEventListener("mousemove",this._onMove),document.removeEventListener("mouseup",this._onMouseUp))},_onTouchEnd:function(t){this._ignoreEvent(t)||(this._onUp(t),document.removeEventListener("touchmove",this._onMove),document.removeEventListener("touchend",this._onTouchEnd))},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})},_ignoreEvent:function(t){var e=this._map;if(e.boxZoom&&e.boxZoom.isActive())return!0;if(e.dragRotate&&e.dragRotate.isActive())return!0;if(t.touches)return t.touches.length>1;if(t.ctrlKey)return!0;var n=1,r=0;return"mousemove"===t.type?t.buttons&0===n:t.button!==r},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),n=160;t.length>0&&e-t[0][0]>n;)t.shift()}}},{"../../util/dom":158,"../../util/util":169}],145:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),a.bindHandlers(this)}var i=t("../../util/dom"),o=t("point-geometry"),a=t("../../util/util");e.exports=r;var s=.25,l=a.bezier(0,0,s,1),u=180,c=720;r.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onDown),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onDown),this._enabled=!1)},_onDown:function(t){if(!this._ignoreEvent(t)&&!this.isActive()){document.addEventListener("mousemove",this._onMove),document.addEventListener("mouseup",this._onUp),this._active=!1,this._inertia=[[Date.now(),this._map.getBearing()]],this._startPos=this._pos=i.mousePos(this._el,t),this._center=this._map.transform.centerPoint;var e=this._startPos.sub(this._center),n=e.mag();n<200&&(this._center=this._startPos.add(new o(-200,0)._rotate(e.angle()))),t.preventDefault()}},_onMove:function(t){if(!this._ignoreEvent(t)){this.isActive()||(this._active=!0,this._fireEvent("rotatestart",t),this._fireEvent("movestart",t));var e=this._map;e.stop();var n=this._pos,r=i.mousePos(this._el,t),o=this._center,a=n.sub(o).angleWith(r.sub(o))/Math.PI*180,s=e.getBearing()-a,l=this._inertia,u=l[l.length-1];this._drainInertiaBuffer(),l.push([Date.now(),e._normalizeBearing(s,u[1])]),e.transform.bearing=s,this._fireEvent("rotate",t),this._fireEvent("move",t),this._pos=r}},_onUp:function(t){if(!this._ignoreEvent(t)&&(document.removeEventListener("mousemove",this._onMove),document.removeEventListener("mouseup",this._onUp),this.isActive())){this._active=!1,this._fireEvent("rotateend",t),this._drainInertiaBuffer();var e=this._map,n=e.getBearing(),r=this._inertia,i=function(){Math.abs(n)<e.options.bearingSnap?e.resetNorth({noMoveStart:!0},{originalEvent:t}):this._fireEvent("moveend",t)}.bind(this);if(r.length<2)return void i();var o=r[0],a=r[r.length-1],f=r[r.length-2],h=e._normalizeBearing(n,f[1]),d=a[1]-o[1],p=d<0?-1:1,m=(a[0]-o[0])/1e3;if(0===d||0===m)return void i();var g=Math.abs(d*(s/m));g>u&&(g=u);var v=g/(c*s),y=p*g*(v/2);h+=y,Math.abs(e._normalizeBearing(h,0))<e.options.bearingSnap&&(h=e._normalizeBearing(0,h)),e.rotateTo(h,{duration:1e3*v,easing:l,noMoveStart:!0},{originalEvent:t})}},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})},_ignoreEvent:function(t){var e=this._map;if(e.boxZoom&&e.boxZoom.isActive())return!0;if(e.dragPan&&e.dragPan.isActive())return!0;if(t.touches)return t.touches.length>1;var n=t.ctrlKey?1:2,r=t.ctrlKey?0:2;return"mousemove"===t.type?t.buttons&0===n:t.button!==r},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),n=160;t.length>0&&e-t[0][0]>n;)t.shift()}}},{"../../util/dom":158,"../../util/util":169,"point-geometry":174}],146:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),this._onKeyDown=this._onKeyDown.bind(this)}e.exports=r;var i=80,o=2,a=5;r.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("keydown",this._onKeyDown,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("keydown",this._onKeyDown),this._enabled=!1)},_onKeyDown:function(t){if(!(t.altKey||t.ctrlKey||t.metaKey)){var e=this._map,n={originalEvent:t};switch(t.keyCode){case 61:case 107:case 171:case 187:e.zoomTo(Math.round(e.getZoom())+(t.shiftKey?2:1),n);break;case 189:case 109:case 173:e.zoomTo(Math.round(e.getZoom())-(t.shiftKey?2:1),n);break;case 37:t.shiftKey?e.easeTo({bearing:e.getBearing()-o},n):(t.preventDefault(),e.panBy([-i,0],n));break;case 39:t.shiftKey?e.easeTo({bearing:e.getBearing()+o},n):(t.preventDefault(),e.panBy([i,0],n));break;case 38:t.shiftKey?e.easeTo({pitch:e.getPitch()+a},n):(t.preventDefault(),e.panBy([0,-i],n));break;case 40:t.shiftKey?e.easeTo({pitch:Math.max(e.getPitch()-a,0)},n):(t.preventDefault(),e.panBy([0,i],n))}}}}},{}],147:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),a.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../util/browser"),a=t("../../util/util");e.exports=r;var s="undefined"!=typeof navigator?navigator.userAgent.toLowerCase():"",l=s.indexOf("firefox")!==-1,u=s.indexOf("safari")!==-1&&s.indexOf("chrom")===-1;r.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("wheel",this._onWheel,!1),this._el.addEventListener("mousewheel",this._onWheel,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("wheel",this._onWheel),this._el.removeEventListener("mousewheel",this._onWheel),this._enabled=!1)},_onWheel:function(t){var e;"wheel"===t.type?(e=t.deltaY,l&&t.deltaMode===window.WheelEvent.DOM_DELTA_PIXEL&&(e/=o.devicePixelRatio),t.deltaMode===window.WheelEvent.DOM_DELTA_LINE&&(e*=40)):"mousewheel"===t.type&&(e=-t.wheelDeltaY,u&&(e/=3));var n=o.now(),r=n-(this._time||0);this._pos=i.mousePos(this._el,t),this._time=n,0!==e&&e%4.000244140625===0?(this._type="wheel",e=Math.floor(e/4)):0!==e&&Math.abs(e)<4?this._type="trackpad":r>400?(this._type=null,this._lastValue=e,this._timeout=setTimeout(this._onTimeout,40)):this._type||(this._type=Math.abs(r*e)<200?"trackpad":"wheel",this._timeout&&(clearTimeout(this._timeout),this._timeout=null,e+=this._lastValue)),t.shiftKey&&e&&(e/=4),this._type&&this._zoom(-e,t),t.preventDefault()},_onTimeout:function(){this._type="wheel",this._zoom(-this._lastValue)},_zoom:function(t,e){if(0!==t){var n=this._map,r=2/(1+Math.exp(-Math.abs(t/100)));t<0&&0!==r&&(r=1/r);var i=n.ease?n.ease.to:n.transform.scale,o=n.transform.scaleZoom(i*r);n.zoomTo(o,{duration:0,around:n.unproject(this._pos),delayEndEvents:200},{originalEvent:e})}}}},{"../../util/browser":155,"../../util/dom":158,"../../util/util":169}],148:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer(),o.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../util/util");e.exports=r;var a=.15,s=o.bezier(0,0,a,1),l=12,u=2.5,c=.15,f=4;r.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("touchstart",this._onStart,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("touchstart",this._onStart),this._enabled=!1)},disableRotation:function(){this._rotationDisabled=!0},enableRotation:function(){this._rotationDisabled=!1},_onStart:function(t){if(2===t.touches.length){var e=i.mousePos(this._el,t.touches[0]),n=i.mousePos(this._el,t.touches[1]);this._startVec=e.sub(n),this._startScale=this._map.transform.scale,this._startBearing=this._map.transform.bearing,this._gestureIntent=void 0,this._inertia=[],document.addEventListener("touchmove",this._onMove,!1),document.addEventListener("touchend",this._onEnd,!1)}},_onMove:function(t){if(2===t.touches.length){var e=i.mousePos(this._el,t.touches[0]),n=i.mousePos(this._el,t.touches[1]),r=e.add(n).div(2),o=e.sub(n),a=o.mag()/this._startVec.mag(),s=this._rotationDisabled?0:180*o.angleWith(this._startVec)/Math.PI,l=this._map;if(this._gestureIntent){var u={duration:0,around:l.unproject(r)};"rotate"===this._gestureIntent&&(u.bearing=this._startBearing+s),"zoom"!==this._gestureIntent&&"rotate"!==this._gestureIntent||(u.zoom=l.transform.scaleZoom(this._startScale*a)),l.stop(),this._drainInertiaBuffer(),this._inertia.push([Date.now(),a,r]),l.easeTo(u,{originalEvent:t})}else{var h=Math.abs(1-a)>c,d=Math.abs(s)>f;d?this._gestureIntent="rotate":h&&(this._gestureIntent="zoom"),this._gestureIntent&&(this._startVec=o,this._startScale=l.transform.scale,this._startBearing=l.transform.bearing)}t.preventDefault()}},_onEnd:function(t){document.removeEventListener("touchmove",this._onMove),document.removeEventListener("touchend",this._onEnd),this._drainInertiaBuffer();var e=this._inertia,n=this._map;if(e.length<2)return void n.snapToNorth({},{originalEvent:t});var r=e[e.length-1],i=e[0],o=n.transform.scaleZoom(this._startScale*r[1]),c=n.transform.scaleZoom(this._startScale*i[1]),f=o-c,h=(r[0]-i[0])/1e3,d=r[2];if(0===h||o===c)return void n.snapToNorth({},{originalEvent:t});var p=f*a/h;Math.abs(p)>u&&(p=p>0?u:-u);var m=1e3*Math.abs(p/(l*a)),g=o+p*m/2e3;g<0&&(g=0),n.easeTo({zoom:g,duration:m,easing:s,around:n.unproject(d)},{originalEvent:t})},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),n=160;t.length>2&&e-t[0][0]>n;)t.shift()}}},{"../../util/dom":158,"../../util/util":169}],149:[function(t,e,n){"use strict";function r(){i.bindAll(["_onHashChange","_updateHash"],this)}e.exports=r;var i=t("../util/util");r.prototype={addTo:function(t){return this._map=t,window.addEventListener("hashchange",this._onHashChange,!1),this._map.on("moveend",this._updateHash),this},remove:function(){return window.removeEventListener("hashchange",this._onHashChange,!1),this._map.off("moveend",this._updateHash),delete this._map,this},_onHashChange:function(){var t=location.hash.replace("#","").split("/");return t.length>=3&&(this._map.jumpTo({center:[+t[2],+t[1]],zoom:+t[0],bearing:+(t[3]||0)}),!0)},_updateHash:function(){var t=this._map.getCenter(),e=this._map.getZoom(),n=this._map.getBearing(),r=Math.max(0,Math.ceil(Math.log(e)/Math.LN2)),i="#"+Math.round(100*e)/100+"/"+t.lat.toFixed(r)+"/"+t.lng.toFixed(r)+(n?"/"+Math.round(10*n)/10:"");window.history.replaceState("","",i)}}},{"../util/util":169}],150:[function(t,e,n){"use strict";function r(t){this._map=t,this._el=t.getCanvasContainer();for(var e in i)t[e]=new i[e](t);a.bindHandlers(this)}var i={scrollZoom:t("./handler/scroll_zoom"),boxZoom:t("./handler/box_zoom"),dragRotate:t("./handler/drag_rotate"),dragPan:t("./handler/drag_pan"),keyboard:t("./handler/keyboard"),doubleClickZoom:t("./handler/dblclick_zoom"),touchZoomRotate:t("./handler/touch_zoom_rotate")},o=t("../util/dom"),a=t("../util/util"),s=t("point-geometry");e.exports=r,r.prototype={enable:function(){var t=this._map.options,e=this._el;for(var n in i)t[n]&&this._map[n].enable();e.addEventListener("mousedown",this._onMouseDown,!1),e.addEventListener("mouseup",this._onMouseUp,!1),e.addEventListener("mousemove",this._onMouseMove,!1),e.addEventListener("touchstart",this._onTouchStart,!1),e.addEventListener("touchend",this._onTouchEnd,!1),e.addEventListener("touchmove",this._onTouchMove,!1),e.addEventListener("touchcancel",this._onTouchCancel,!1),e.addEventListener("click",this._onClick,!1),e.addEventListener("dblclick",this._onDblClick,!1),e.addEventListener("contextmenu",this._onContextMenu,!1)},disable:function(){var t=this._map.options,e=this._el;for(var n in i)t[n]&&this._map[n].disable();e.removeEventListener("mousedown",this._onMouseDown),e.removeEventListener("mouseup",this._onMouseUp),e.removeEventListener("mousemove",this._onMouseMove),e.removeEventListener("touchstart",this._onTouchStart),e.removeEventListener("touchend",this._onTouchEnd),e.removeEventListener("touchmove",this._onTouchMove),e.removeEventListener("touchcancel",this._onTouchCancel),e.removeEventListener("click",this._onClick),e.removeEventListener("dblclick",this._onDblClick),e.removeEventListener("contextmenu",this._onContextMenu)},_onMouseDown:function(t){this._map.stop(),this._startPos=o.mousePos(this._el,t),this._fireMouseEvent("mousedown",t)},_onMouseUp:function(t){var e=this._map,n=e.dragRotate&&e.dragRotate.isActive();this._contextMenuEvent&&!n&&this._fireMouseEvent("contextmenu",this._contextMenuEvent),this._contextMenuEvent=null,this._fireMouseEvent("mouseup",t)},_onMouseMove:function(t){var e=this._map,n=this._el;if(!(e.dragPan&&e.dragPan.isActive()||e.dragRotate&&e.dragRotate.isActive())){for(var r=t.toElement||t.target;r&&r!==n;)r=r.parentNode;r===n&&this._fireMouseEvent("mousemove",t)}},_onTouchStart:function(t){this._map.stop(),this._fireTouchEvent("touchstart",t),!t.touches||t.touches.length>1||(this._tapped?(clearTimeout(this._tapped),this._tapped=null,this._fireMouseEvent("dblclick",t)):this._tapped=setTimeout(this._onTouchTimeout,300))},_onTouchMove:function(t){this._fireTouchEvent("touchmove",t)},_onTouchEnd:function(t){this._fireTouchEvent("touchend",t)},_onTouchCancel:function(t){this._fireTouchEvent("touchcancel",t)},_onTouchTimeout:function(){this._tapped=null},_onClick:function(t){var e=o.mousePos(this._el,t);e.equals(this._startPos)&&this._fireMouseEvent("click",t)},_onDblClick:function(t){this._fireMouseEvent("dblclick",t),t.preventDefault()},_onContextMenu:function(t){this._contextMenuEvent=t,t.preventDefault()},_fireMouseEvent:function(t,e){var n=o.mousePos(this._el,e);return this._map.fire(t,{lngLat:this._map.unproject(n),point:n,originalEvent:e})},_fireTouchEvent:function(t,e){var n=o.touchPos(this._el,e),r=n.reduce(function(t,e,n,r){return t.add(e.div(r.length))},new s(0,0));return this._map.fire(t,{lngLat:this._map.unproject(r),point:r,lngLats:n.map(function(t){return this._map.unproject(t)},this),points:n,originalEvent:e})}}},{"../util/dom":158,"../util/util":169,"./handler/box_zoom":142,"./handler/dblclick_zoom":143,"./handler/drag_pan":144,"./handler/drag_rotate":145,"./handler/keyboard":146,"./handler/scroll_zoom":147,"./handler/touch_zoom_rotate":148,"point-geometry":174}],151:[function(t,e,n){"use strict";function r(t){t.parentNode&&t.parentNode.removeChild(t)}var i=t("../util/canvas"),o=t("../util/util"),a=t("../util/browser"),s=t("../util/evented"),l=t("../util/dom"),u=t("../style/style"),c=t("../style/animation_loop"),f=t("../render/painter"),h=t("../geo/transform"),d=t("./hash"),p=t("./interaction"),m=t("./camera"),g=t("../geo/lng_lat"),v=t("../geo/lng_lat_bounds"),y=t("point-geometry"),x=t("./control/attribution"),b=0,_=20,w=e.exports=function(t){t=o.inherit(this.options,t),this._interactive=t.interactive,this._failIfMajorPerformanceCaveat=t.failIfMajorPerformanceCaveat,this._preserveDrawingBuffer=t.preserveDrawingBuffer,"string"==typeof t.container?this._container=document.getElementById(t.container):this._container=t.container,this.animationLoop=new c,this.transform=new h(t.minZoom,t.maxZoom),t.maxBounds&&this.setMaxBounds(t.maxBounds),o.bindAll(["_forwardStyleEvent","_forwardSourceEvent","_forwardLayerEvent","_forwardTileEvent","_onStyleLoad","_onStyleChange","_onSourceAdd","_onSourceRemove","_onSourceUpdate","_onWindowResize","onError","_update","_render"],this),this._setupContainer(),this._setupPainter(),this.on("move",this._update.bind(this,!1)),this.on("zoom",this._update.bind(this,!0)),this.on("moveend",function(){this.animationLoop.set(300),this._rerender()}.bind(this)),"undefined"!=typeof window&&window.addEventListener("resize",this._onWindowResize,!1),this.interaction=new p(this),t.interactive&&this.interaction.enable(),this._hash=t.hash&&(new d).addTo(this),this._hash&&this._hash._onHashChange()||this.jumpTo(t),this.stacks={},this._classes=[],this.resize(),t.classes&&this.setClasses(t.classes),t.style&&this.setStyle(t.style),t.attributionControl&&this.addControl(new x(t.attributionControl)),this.on("style.error",this.onError),this.on("source.error",this.onError),this.on("tile.error",this.onError),this.on("layer.error",this.onError)};o.extend(w.prototype,s),o.extend(w.prototype,m.prototype),o.extend(w.prototype,{options:{center:[0,0],zoom:0,bearing:0,pitch:0,minZoom:b,maxZoom:_,interactive:!0,scrollZoom:!0,boxZoom:!0,dragRotate:!0,dragPan:!0,keyboard:!0,doubleClickZoom:!0,touchZoomRotate:!0,bearingSnap:7,hash:!1,attributionControl:!0,failIfMajorPerformanceCaveat:!1,preserveDrawingBuffer:!1},addControl:function(t){return t.addTo(this),this},addClass:function(t,e){return this._classes.indexOf(t)>=0||""===t?this:(this._classes.push(t),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0))},removeClass:function(t,e){var n=this._classes.indexOf(t);return n<0||""===t?this:(this._classes.splice(n,1),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0))},setClasses:function(t,e){for(var n={},r=0;r<t.length;r++)""!==t[r]&&(n[t[r]]=!0);return this._classes=Object.keys(n),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0)},hasClass:function(t){return this._classes.indexOf(t)>=0},getClasses:function(){return this._classes},resize:function(){var t=0,e=0;return this._container&&(t=this._container.offsetWidth||400,e=this._container.offsetHeight||300),this._canvas.resize(t,e),this.transform.resize(t,e),this.painter.resize(t,e),this.fire("movestart").fire("move").fire("resize").fire("moveend")},getBounds:function(){var t=new v(this.transform.pointLocation(new y(0,0)),this.transform.pointLocation(this.transform.size));return(this.transform.angle||this.transform.pitch)&&(t.extend(this.transform.pointLocation(new y(this.transform.size.x,0))),t.extend(this.transform.pointLocation(new y(0,this.transform.size.y)))),t},setMaxBounds:function(t){if(t){var e=v.convert(t);this.transform.lngRange=[e.getWest(),e.getEast()],this.transform.latRange=[e.getSouth(),e.getNorth()],this.transform._constrain(),this._update()}else null!==t&&void 0!==t||(this.transform.lngRange=[],this.transform.latRange=[],this._update());return this},setMinZoom:function(t){if(t=null===t||void 0===t?b:t,t>=b&&t<=this.transform.maxZoom)return this.transform.minZoom=t,this._update(),this.getZoom()<t&&this.setZoom(t),this;throw new Error("minZoom must be between "+b+" and the current maxZoom, inclusive")},setMaxZoom:function(t){if(t=null===t||void 0===t?_:t,t>=this.transform.minZoom&&t<=_)return this.transform.maxZoom=t,this._update(),this.getZoom()>t&&this.setZoom(t),this;throw new Error("maxZoom must be between the current minZoom and "+_+", inclusive")},project:function(t){return this.transform.locationPoint(g.convert(t))},unproject:function(t){return this.transform.pointLocation(y.convert(t))},queryRenderedFeatures:function(t,e){t instanceof y||Array.isArray(t)||(e=t,t=void 0);var n=this._makeQueryGeometry(t);return this.style.queryRenderedFeatures(n,e,this.transform.zoom,this.transform.angle)},_makeQueryGeometry:function(t){void 0===t&&(t=[y.convert([0,0]),y.convert([this.transform.width,this.transform.height])]);var e,n=t instanceof y||"number"==typeof t[0];if(n){var r=y.convert(t);e=[r]}else{var i=[y.convert(t[0]),y.convert(t[1])];e=[i[0],new y(i[1].x,i[0].y),i[1],new y(i[0].x,i[1].y),i[0]]}return e=e.map(function(t){return this.transform.pointCoordinate(t)}.bind(this))},querySourceFeatures:function(t,e){return this.style.querySourceFeatures(t,e)},setStyle:function(t){return this.style&&(this.style.off("load",this._onStyleLoad).off("error",this._forwardStyleEvent).off("change",this._onStyleChange).off("source.add",this._onSourceAdd).off("source.remove",this._onSourceRemove).off("source.load",this._onSourceUpdate).off("source.error",this._forwardSourceEvent).off("source.change",this._onSourceUpdate).off("layer.add",this._forwardLayerEvent).off("layer.remove",this._forwardLayerEvent).off("layer.error",this._forwardLayerEvent).off("tile.add",this._forwardTileEvent).off("tile.remove",this._forwardTileEvent).off("tile.load",this._update).off("tile.error",this._forwardTileEvent).off("tile.stats",this._forwardTileEvent)._remove(),this.off("rotate",this.style._redoPlacement),this.off("pitch",this.style._redoPlacement)),t?(t instanceof u?this.style=t:this.style=new u(t,this.animationLoop),this.style.on("load",this._onStyleLoad).on("error",this._forwardStyleEvent).on("change",this._onStyleChange).on("source.add",this._onSourceAdd).on("source.remove",this._onSourceRemove).on("source.load",this._onSourceUpdate).on("source.error",this._forwardSourceEvent).on("source.change",this._onSourceUpdate).on("layer.add",this._forwardLayerEvent).on("layer.remove",this._forwardLayerEvent).on("layer.error",this._forwardLayerEvent).on("tile.add",this._forwardTileEvent).on("tile.remove",this._forwardTileEvent).on("tile.load",this._update).on("tile.error",this._forwardTileEvent).on("tile.stats",this._forwardTileEvent),this.on("rotate",this.style._redoPlacement),this.on("pitch",this.style._redoPlacement),this):(this.style=null,this)},getStyle:function(){return this.style.serialize()},addSource:function(t,e){return this.style.addSource(t,e),this._update(!0),this},removeSource:function(t){return 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console.error("Failed to initialize WebGL")},_contextLost:function(t){t.preventDefault(),this._frameId&&a.cancelFrame(this._frameId),this.fire("webglcontextlost",{originalEvent:t})},_contextRestored:function(t){this._setupPainter(),this.resize(),this._update(),this.fire("webglcontextrestored",{originalEvent:t})},loaded:function(){return!this._styleDirty&&!this._sourcesDirty&&!(!this.style||!this.style.loaded())},_update:function(t){return this.style?(this._styleDirty=this._styleDirty||t,this._sourcesDirty=!0,this._rerender(),this):this},_render:function(){return this.style&&this._styleDirty&&(this._styleDirty=!1,this.style.update(this._classes,this._classOptions),this._classOptions=null,this.style._recalculate(this.transform.zoom)),this.style&&this._sourcesDirty&&(this._sourcesDirty=!1,this.style._updateSources(this.transform)),this.painter.render(this.style,{debug:this.showTileBoundaries,showOverdrawInspector:this._showOverdrawInspector,vertices:this.vertices,rotating:this.rotating,zooming:this.zooming}),this.fire("render"),this.loaded()&&!this._loaded&&(this._loaded=!0,this.fire("load")),this._frameId=null,this.animationLoop.stopped()||(this._styleDirty=!0),(this._sourcesDirty||this._repaint||!this.animationLoop.stopped())&&this._rerender(),this},remove:function(){this._hash&&this._hash.remove(),a.cancelFrame(this._frameId),this.setStyle(null),"undefined"!=typeof window&&window.removeEventListener("resize",this._onWindowResize,!1),r(this._canvasContainer),r(this._controlContainer),this._container.classList.remove("mapboxgl-map")},onError:function(t){console.error(t.error)},_rerender:function(){this.style&&!this._frameId&&(this._frameId=a.frame(this._render))},_forwardStyleEvent:function(t){this.fire("style."+t.type,o.extend({style:t.target},t))},_forwardSourceEvent:function(t){this.fire(t.type,o.extend({style:t.target},t))},_forwardLayerEvent:function(t){this.fire(t.type,o.extend({style:t.target},t))},_forwardTileEvent:function(t){this.fire(t.type,o.extend({style:t.target},t))},_onStyleLoad:function(t){this.transform.unmodified&&this.jumpTo(this.style.stylesheet),this.style.update(this._classes,{transition:!1}),this._forwardStyleEvent(t)},_onStyleChange:function(t){this._update(!0),this._forwardStyleEvent(t)},_onSourceAdd:function(t){var e=t.source;e.onAdd&&e.onAdd(this),this._forwardSourceEvent(t)},_onSourceRemove:function(t){var e=t.source;e.onRemove&&e.onRemove(this),this._forwardSourceEvent(t)},_onSourceUpdate:function(t){this._update(),this._forwardSourceEvent(t)},_onWindowResize:function(){this.stop().resize()._update()}}),o.extendAll(w.prototype,{_showTileBoundaries:!1,get showTileBoundaries(){return this._showTileBoundaries},set showTileBoundaries(t){this._showTileBoundaries!==t&&(this._showTileBoundaries=t,this._update())},_showCollisionBoxes:!1,get showCollisionBoxes(){return this._showCollisionBoxes},set showCollisionBoxes(t){this._showCollisionBoxes!==t&&(this._showCollisionBoxes=t,this.style._redoPlacement())},_showOverdrawInspector:!1,get showOverdrawInspector(){return this._showOverdrawInspector},set showOverdrawInspector(t){this._showOverdrawInspector!==t&&(this._showOverdrawInspector=t,this._update())},_repaint:!1,get repaint(){return this._repaint},set repaint(t){this._repaint=t,this._update()},_vertices:!1,get vertices(){return this._vertices},set vertices(t){this._vertices=t,this._update()}})},{"../geo/lng_lat":76,"../geo/lng_lat_bounds":77,"../geo/transform":78,"../render/painter":91,"../style/animation_loop":107,"../style/style":110,"../util/browser":155,"../util/canvas":156,"../util/dom":158,"../util/evented":161,"../util/util":169,"./camera":137,"./control/attribution":138,"./hash":149,"./interaction":150,"point-geometry":174}],152:[function(t,e,n){"use strict";function r(t){i.setOptions(this,t),i.bindAll(["_update","_onClickClose"],this)}e.exports=r;var i=t("../util/util"),o=t("../util/evented"),a=t("../util/dom"),s=t("../geo/lng_lat");r.prototype=i.inherit(o,{options:{closeButton:!0,closeOnClick:!0},addTo:function(t){return this._map=t,this._map.on("move",this._update),this.options.closeOnClick&&this._map.on("click",this._onClickClose),this._update(),this},remove:function(){return this._content&&this._content.parentNode&&this._content.parentNode.removeChild(this._content),this._container&&(this._container.parentNode.removeChild(this._container),delete this._container),this._map&&(this._map.off("move",this._update),this._map.off("click",this._onClickClose),delete this._map),this},getLngLat:function(){return this._lngLat},setLngLat:function(t){return this._lngLat=s.convert(t),this._update(),this},setText:function(t){return this.setDOMContent(document.createTextNode(t))},setHTML:function(t){var e,n=document.createDocumentFragment(),r=document.createElement("body");for(r.innerHTML=t;;){if(e=r.firstChild,!e)break;n.appendChild(e)}return this.setDOMContent(n)},setDOMContent:function(t){return this._createContent(),this._content.appendChild(t),this._update(),this},_createContent:function(){this._content&&this._content.parentNode&&this._content.parentNode.removeChild(this._content),this._content=a.create("div","mapboxgl-popup-content",this._container),this.options.closeButton&&(this._closeButton=a.create("button","mapboxgl-popup-close-button",this._content),this._closeButton.innerHTML="&#215;",this._closeButton.addEventListener("click",this._onClickClose))},_update:function(){if(this._map&&this._lngLat&&this._content){this._container||(this._container=a.create("div","mapboxgl-popup",this._map.getContainer()),this._tip=a.create("div","mapboxgl-popup-tip",this._container),this._container.appendChild(this._content));var t=this._map.project(this._lngLat).round(),e=this.options.anchor;if(!e){var n=this._container.offsetWidth,r=this._container.offsetHeight;e=t.y<r?["top"]:t.y>this._map.transform.height-r?["bottom"]:[],t.x<n/2?e.push("left"):t.x>this._map.transform.width-n/2&&e.push("right"),e=0===e.length?"bottom":e.join("-")}var i={top:"translate(-50%,0)","top-left":"translate(0,0)","top-right":"translate(-100%,0)",bottom:"translate(-50%,-100%)","bottom-left":"translate(0,-100%)","bottom-right":"translate(-100%,-100%)",left:"translate(0,-50%)",right:"translate(-100%,-50%)"},o=this._container.classList;for(var s in i)o.remove("mapboxgl-popup-anchor-"+s);o.add("mapboxgl-popup-anchor-"+e),a.setTransform(this._container,i[e]+" translate("+t.x+"px,"+t.y+"px)")}},_onClickClose:function(){this.remove()}})},{"../geo/lng_lat":76,"../util/dom":158,"../util/evented":161,"../util/util":169}],153:[function(t,e,n){"use strict";function r(t,e){this.target=t,this.parent=e,this.callbacks={},this.callbackID=0,this.receive=this.receive.bind(this),this.target.addEventListener("message",this.receive,!1)}e.exports=r,r.prototype.receive=function(t){var e,n=t.data;if("<response>"===n.type)e=this.callbacks[n.id],delete this.callbacks[n.id],e(n.error||null,n.data);else if("undefined"!=typeof n.id){var r=n.id;this.parent[n.type](n.data,function(t,e,n){this.postMessage({type:"<response>",id:String(r),error:t?String(t):null,data:e},n)}.bind(this))}else this.parent[n.type](n.data)},r.prototype.send=function(t,e,n,r){var i=null;n&&(this.callbacks[i=this.callbackID++]=n),this.postMessage({type:t,id:String(i),data:e},r)},r.prototype.postMessage=function(t,e){this.target.postMessage(t,e)}},{}],154:[function(t,e,n){"use strict";function r(t){var e=document.createElement("a");return e.href=t,e.protocol===document.location.protocol&&e.host===document.location.host}n.getJSON=function(t,e){var n=new XMLHttpRequest;return n.open("GET",t,!0),n.setRequestHeader("Accept","application/json"),n.onerror=function(t){e(t)},n.onload=function(){if(n.status>=200&&n.status<300&&n.response){var t;try{t=JSON.parse(n.response)}catch(t){return e(t)}e(null,t)}else e(new Error(n.statusText))},n.send(),n},n.getArrayBuffer=function(t,e){var n=new XMLHttpRequest;return n.open("GET",t,!0),n.responseType="arraybuffer",n.onerror=function(t){e(t)},n.onload=function(){n.status>=200&&n.status<300&&n.response?e(null,n.response):e(new Error(n.statusText))},n.send(),n},n.getImage=function(t,e){return n.getArrayBuffer(t,function(t,n){if(t)return e(t);var r=new Image;r.onload=function(){e(null,r),(window.URL||window.webkitURL).revokeObjectURL(r.src)};var i=new Blob([new Uint8Array(n)],{type:"image/png"});return r.src=(window.URL||window.webkitURL).createObjectURL(i),r.getData=function(){var t=document.createElement("canvas"),e=t.getContext("2d");return t.width=r.width,t.height=r.height,e.drawImage(r,0,0),e.getImageData(0,0,r.width,r.height).data},r})},n.getVideo=function(t,e){var n=document.createElement("video");n.onloadstart=function(){e(null,n)};for(var i=0;i<t.length;i++){var o=document.createElement("source");r(t[i])||(n.crossOrigin="Anonymous"),o.src=t[i],n.appendChild(o)}return n.getData=function(){return n},n}},{}],155:[function(t,e,n){"use strict";e.exports.now=function(){return window.performance&&window.performance.now?window.performance.now.bind(window.performance):Date.now.bind(Date)}();var r=window.requestAnimationFrame||window.mozRequestAnimationFrame||window.webkitRequestAnimationFrame||window.msRequestAnimationFrame;n.frame=function(t){return r(t)};var i=window.cancelAnimationFrame||window.mozCancelAnimationFrame||window.webkitCancelAnimationFrame||window.msCancelAnimationFrame;n.cancelFrame=function(t){i(t)},n.timed=function(t,r,i){function o(l){a||(l=e.exports.now(),l>=s+r?t.call(i,1):(t.call(i,(l-s)/r),n.frame(o)))}if(!r)return t.call(i,1),null;var a=!1,s=e.exports.now();return n.frame(o),function(){a=!0}},n.supported=t("mapbox-gl-js-supported"),n.hardwareConcurrency=navigator.hardwareConcurrency||8,Object.defineProperty(n,"devicePixelRatio",{get:function(){return window.devicePixelRatio}}),n.supportsWebp=!1;var o=document.createElement("img");o.onload=function(){n.supportsWebp=!0},o.src="data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=",n.supportsGeolocation=!!navigator.geolocation},{"mapbox-gl-js-supported":41}],156:[function(t,e,n){"use strict";function r(t,e){this.canvas=document.createElement("canvas"),t&&e&&(this.canvas.style.position="absolute",this.canvas.classList.add("mapboxgl-canvas"),this.canvas.addEventListener("webglcontextlost",t._contextLost.bind(t),!1),this.canvas.addEventListener("webglcontextrestored",t._contextRestored.bind(t),!1),this.canvas.setAttribute("tabindex",0),e.appendChild(this.canvas))}var i=t("../util"),o=t("mapbox-gl-js-supported");e.exports=r,r.prototype.resize=function(t,e){var n=window.devicePixelRatio||1;this.canvas.width=n*t,this.canvas.height=n*e,this.canvas.style.width=t+"px",this.canvas.style.height=e+"px"},r.prototype.getWebGLContext=function(t){return t=i.extend({},t,o.webGLContextAttributes),this.canvas.getContext("webgl",t)||this.canvas.getContext("experimental-webgl",t)},r.prototype.getElement=function(){return this.canvas}},{"../util":169,"mapbox-gl-js-supported":41}],157:[function(t,e,n){"use strict";function r(e,n){this.actors=[],this.currentActor=0;for(var r=0;r<e;r++){var a=new o(t("../../source/worker")),s=new i(a,n);s.name="Worker "+r,this.actors.push(s)}}var i=t("../actor"),o=t("webworkify");e.exports=r,r.prototype={broadcast:function(t,e){for(var n=0;n<this.actors.length;n++)this.actors[n].send(t,e)},send:function(t,e,n,r,i){return("number"!=typeof r||isNaN(r))&&(r=this.currentActor=(this.currentActor+1)%this.actors.length),this.actors[r].send(t,e,n,i),r},remove:function(){for(var t=0;t<this.actors.length;t++)this.actors[t].target.terminate();this.actors=[]}}},{"../../source/worker":105,"../actor":153,webworkify:191}],158:[function(t,e,n){"use strict";function r(t){for(var e=0;e<t.length;e++)if(t[e]in s)return t[e]}function i(t){t.preventDefault(),t.stopPropagation(),window.removeEventListener("click",i,!0)}var o=t("point-geometry");n.create=function(t,e,n){var r=document.createElement(t);return e&&(r.className=e),n&&n.appendChild(r),r};var a,s=document.documentElement.style,l=r(["userSelect","MozUserSelect","WebkitUserSelect","msUserSelect"]);n.disableDrag=function(){l&&(a=s[l],s[l]="none")},n.enableDrag=function(){l&&(s[l]=a)};var u=r(["transform","WebkitTransform"]);n.setTransform=function(t,e){t.style[u]=e},n.suppressClick=function(){window.addEventListener("click",i,!0),window.setTimeout(function(){window.removeEventListener("click",i,!0)},0)},n.mousePos=function(t,e){var n=t.getBoundingClientRect();return e=e.touches?e.touches[0]:e,new o(e.clientX-n.left-t.clientLeft,e.clientY-n.top-t.clientTop)},n.touchPos=function(t,e){for(var n=t.getBoundingClientRect(),r=[],i=0;i<e.touches.length;i++)r.push(new o(e.touches[i].clientX-n.left-t.clientLeft,e.touches[i].clientY-n.top-t.clientTop));return r}},{"point-geometry":174}],159:[function(t,e,n){"use strict";e.exports={API_URL:"https://api.mapbox.com",REQUIRE_ACCESS_TOKEN:!0}},{}],160:[function(t,e,n){"use strict";function r(t){this._stringToNumber={},this._numberToString=[];for(var e=0;e<t.length;e++){var n=t[e];this._stringToNumber[n]=e,this._numberToString[e]=n}}var i=t("assert");e.exports=r,r.prototype.encode=function(t){return i(t in this._stringToNumber),this._stringToNumber[t]},r.prototype.decode=function(t){return i(t<this._numberToString.length),this._numberToString[t]}},{assert:6}],161:[function(t,e,n){"use strict";var r=t("./util"),i={on:function(t,e){return this._events=this._events||{},this._events[t]=this._events[t]||[],this._events[t].push(e),this},off:function(t,e){if(!t)return delete this._events,this;if(!this.listens(t))return this;if(e){var n=this._events[t].indexOf(e);n>=0&&this._events[t].splice(n,1),this._events[t].length||delete this._events[t]}else delete this._events[t];return this},once:function(t,e){var n=function(r){this.off(t,n),e.call(this,r)}.bind(this);return this.on(t,n),this},fire:function(t,e){if(!this.listens(t))return this;e=r.extend({},e),r.extend(e,{type:t,target:this});for(var n=this._events[t].slice(),i=0;i<n.length;i++)n[i].call(this,e);return this},listens:function(t){return!(!this._events||!this._events[t])}};e.exports=i},{"./util":169}],162:[function(t,e,n){"use strict";function r(t,e){this.stacks=t.readFields(i,[],e)}function i(t,e,n){if(1===t){var r=n.readMessage(o,{glyphs:{}});e.push(r)}}function o(t,e,n){if(1===t)e.name=n.readString();else if(2===t)e.range=n.readString();else if(3===t){var r=n.readMessage(a,{});e.glyphs[r.id]=r}}function a(t,e,n){1===t?e.id=n.readVarint():2===t?e.bitmap=n.readBytes():3===t?e.width=n.readVarint():4===t?e.height=n.readVarint():5===t?e.left=n.readSVarint():6===t?e.top=n.readSVarint():7===t&&(e.advance=n.readVarint())}e.exports=r},{}],163:[function(t,e,n){"use strict";function r(t,e,n){return t*(1-n)+e*n}e.exports=r,r.number=r,r.vec2=function(t,e,n){return[r(t[0],e[0],n),r(t[1],e[1],n)]},r.color=function(t,e,n){return[r(t[0],e[0],n),r(t[1],e[1],n),r(t[2],e[2],n),r(t[3],e[3],n)]},r.array=function(t,e,n){return t.map(function(t,i){return r(t,e[i],n)})}},{}],164:[function(t,e,n){"use strict";function r(t,e,n){for(var r=0;r<t.length;r++)for(var i=t[r],o=0;o<e.length;o++)for(var a=e[o],s=0;s<a.length;s++){var l=a[s];if(d(i,l))return!0;if(c(l,i,n))return!0}return!1}function i(t,e){if(1===t.length&&1===t[0].length)return h(e,t[0][0]);for(var n=0;n<e.length;n++)for(var r=e[n],i=0;i<r.length;i++)if(h(t,r[i]))return!0;for(var o=0;o<t.length;o++){for(var a=t[o],l=0;l<a.length;l++)if(h(e,a[l]))return!0;for(var u=0;u<e.length;u++)if(s(a,e[u]))return!0}return!1}function o(t,e,n){for(var r=0;r<e.length;r++)for(var i=e[r],o=0;o<t.length;o++){var s=t[o];if(s.length>=3)for(var l=0;l<i.length;l++)if(d(s,i[l]))return!0;if(a(s,i,n))return!0}return!1}function 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T=d.filter(function(t,e){return"LinePlot"===t.geometry||"DotPlot"===t.geometry}).length===d.length,A=null===f.needsEndSpacing?S||!T:f.needsEndSpacing,z=f.angularAxis.domain&&f.angularAxis.domain!=o.DATAEXTENT&&!S&&f.angularAxis.domain[0]>=0,E=z?f.angularAxis.domain:i.extent(k),L=Math.abs(k[1]-k[0]);T&&!S&&(L=0);var I=E.slice();A&&S&&(I[1]+=L);var D=f.angularAxis.ticksCount||4;D>8&&(D=D/(D/8)+D%8),f.angularAxis.ticksStep&&(D=(I[1]-I[0])/D);var P=f.angularAxis.ticksStep||(I[1]-I[0])/(D*(f.minorTicks+1));M&&(P=Math.max(Math.round(P),1)),I[2]||(I[2]=P);var C=i.range.apply(this,I);if(C=C.map(function(t,e){return parseFloat(t.toPrecision(12))}),s=i.scale.linear().domain(I.slice(0,2)).range("clockwise"===f.direction?[0,360]:[360,0]),c.layout.angularAxis.domain=s.domain(),c.layout.angularAxis.endPadding=A?L:0,e=i.select(this).select("svg.chart-root"),"undefined"==typeof e||e.empty()){var O="<svg xmlns='http://www.w3.org/2000/svg' class='chart-root'>' + '<g class='outer-group'>' + '<g 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J=i.svg.axis().scale(r).ticks(5).tickSize(5);X.call(J).attr({transform:"rotate("+f.radialAxis.orientation+")"}),X.selectAll(".domain").style(B),X.selectAll("g>text").text(function(t,e){return this.textContent+f.radialAxis.ticksSuffix}).style(q).style({"text-anchor":"start"}).attr({x:0,y:0,dx:0,dy:0,transform:function(t,e){return"horizontal"===f.radialAxis.tickOrientation?"rotate("+-f.radialAxis.orientation+") translate("+[0,q["font-size"]]+")":"translate("+[0,q["font-size"]]+")"}}),X.selectAll("g>line").style({stroke:"black"})}var $=e.select(".angular.axis-group").selectAll("g.angular-tick").data(C),Q=$.enter().append("g").classed("angular-tick",!0);$.attr({transform:function(t,e){return"rotate("+l(t,e)+")"}}).style({display:f.angularAxis.visible?"block":"none"}),$.exit().remove(),Q.append("line").classed("grid-line",!0).classed("major",function(t,e){return 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tt=i.max(N.selectAll(".angular-tick text")[0].map(function(t,e){return t.getCTM().e+t.getBBox().width}));j.attr({transform:"translate("+[x+tt,f.margin.top]+")"});var et=e.select("g.geometry-group").selectAll("g").size()>0,nt=e.select("g.geometry-group").selectAll("g.geometry").data(d);if(nt.enter().append("g").attr({class:function(t,e){return"geometry geometry"+e}}),nt.exit().remove(),d[0]||et){var rt=[];d.forEach(function(t,e){var n={};n.radialScale=r,n.angularScale=s,n.container=nt.filter(function(t,n){return n==e}),n.geometry=t.geometry,n.orientation=f.orientation,n.direction=f.direction,n.index=e,rt.push({data:t,geometryConfig:n})});var it=i.nest().key(function(t,e){return"undefined"!=typeof t.data.groupId||"unstacked"}).entries(rt),ot=[];it.forEach(function(t,e){"unstacked"===t.key?ot=ot.concat(t.values.map(function(t,e){return[t]})):ot.push(t.values)}),ot.forEach(function(t,e){var n;n=Array.isArray(t)?t[0].geometryConfig.geometry:t.geometryConfig.geometry;var 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t={geometryConfig:{geometryType:"arc"}};return t},o.DotPlot=function(){return o.PolyChart()},o.DotPlot.defaultConfig=function(){var t={geometryConfig:{geometryType:"dot",dotType:"circle"}};return t},o.LinePlot=function(){return o.PolyChart()},o.LinePlot.defaultConfig=function(){var t={geometryConfig:{geometryType:"line"}};return t},o.Legend=function(){function t(){var n=e.legendConfig,r=e.data.map(function(t,e){return[].concat(t).map(function(t,r){var i=a({},n.elements[e]);return i.name=t,i.color=[].concat(n.elements[e].color)[r],i})}),o=i.merge(r);o=o.filter(function(t,e){return n.elements[e]&&(n.elements[e].visibleInLegend||"undefined"==typeof n.elements[e].visibleInLegend)}),n.reverseOrder&&(o=o.reverse());var s=n.container;("string"==typeof s||s.nodeName)&&(s=i.select(s));var l=o.map(function(t,e){return t.color}),u=n.fontSize,c=null==n.isContinuous?"number"==typeof 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n={data:["a","b","c"],legendConfig:{elements:[{symbol:"line",color:"red"},{symbol:"square",color:"yellow"},{symbol:"diamond",color:"limegreen"}],height:150,colorBandWidth:30,fontSize:12,container:"body",isContinuous:null,textColor:"grey",reverseOrder:!1}};return n},o.tooltipPanel=function(){var t,e,n,r={container:null,hasTick:!1,fontSize:12,color:"white",padding:5},s="tooltip-"+o.tooltipPanel.uid++,l=10,u=function(){t=r.container.selectAll("g."+s).data([0]);var i=t.enter().append("g").classed(s,!0).style({"pointer-events":"none",display:"none"});return n=i.append("path").style({fill:"white","fill-opacity":.9}).attr({d:"M0 0"}),e=i.append("text").attr({dx:r.padding+l,dy:.3*+r.fontSize}),u};return u.text=function(o){var a=i.hsl(r.color).l,s=a>=.5?"#aaa":"white",c=a>=.5?"black":"white",f=o||"";e.style({fill:c,"font-size":r.fontSize+"px"}).text(f);var h=r.padding,d=e.node().getBBox(),p={fill:r.color,stroke:s,"stroke-width":"2px"},m=d.width+2*h+l,g=d.height+2*h;return n.attr({d:"M"+[[l,-g/2],[l,-g/4],[r.hasTick?0:l,0],[l,g/4],[l,g/2],[m,g/2],[m,-g/2]].join("L")+"Z"}).style(p),t.attr({transform:"translate("+[l,-g/2+2*h]+")"}),t.style({display:"block"}),u},u.move=function(e){if(t)return t.attr({transform:"translate("+[e[0],e[1]]+")"}).style({display:"block"}),u},u.hide=function(){if(t)return t.style({display:"none"}),u},u.show=function(){if(t)return t.style({display:"block"}),u},u.config=function(t){return a(r,t),u},u},o.tooltipPanel.uid=1,o.adapter={},o.adapter.plotly=function(){var t={};return t.convert=function(t,e){var n={};if(t.data&&(n.data=t.data.map(function(t,n){var r=a({},t),i=[[r,["marker","color"],["color"]],[r,["marker","opacity"],["opacity"]],[r,["marker","line","color"],["strokeColor"]],[r,["marker","line","dash"],["strokeDash"]],[r,["marker","line","width"],["strokeSize"]],[r,["marker","symbol"],["dotType"]],[r,["marker","size"],["dotSize"]],[r,["marker","barWidth"],["barWidth"]],[r,["line","interpolation"],["lineInterpolation"]],[r,["showlegend"],["visibleInLegend"]]];return i.forEach(function(t,n){o.util.translator.apply(null,t.concat(e))}),e||delete r.marker,e&&delete r.groupId,e?("LinePlot"===r.geometry?(r.type="scatter",r.dotVisible===!0?(delete r.dotVisible,r.mode="lines+markers"):r.mode="lines"):"DotPlot"===r.geometry?(r.type="scatter",r.mode="markers"):"AreaChart"===r.geometry?r.type="area":"BarChart"===r.geometry&&(r.type="bar"),delete r.geometry):("scatter"===r.type?"lines"===r.mode?r.geometry="LinePlot":"markers"===r.mode?r.geometry="DotPlot":"lines+markers"===r.mode&&(r.geometry="LinePlot",r.dotVisible=!0):"area"===r.type?r.geometry="AreaChart":"bar"===r.type&&(r.geometry="BarChart"),delete r.mode,delete r.type),r}),!e&&t.layout&&"stack"===t.layout.barmode)){var r=o.util.duplicates(n.data.map(function(t,e){return t.geometry}));n.data.forEach(function(t,e){var i=r.indexOf(t.geometry);i!=-1&&(n.data[e].groupId=i)})}if(t.layout){var s=a({},t.layout),l=[[s,["plot_bgcolor"],["backgroundColor"]],[s,["showlegend"],["showLegend"]],[s,["radialaxis"],["radialAxis"]],[s,["angularaxis"],["angularAxis"]],[s.angularaxis,["showline"],["gridLinesVisible"]],[s.angularaxis,["showticklabels"],["labelsVisible"]],[s.angularaxis,["nticks"],["ticksCount"]],[s.angularaxis,["tickorientation"],["tickOrientation"]],[s.angularaxis,["ticksuffix"],["ticksSuffix"]],[s.angularaxis,["range"],["domain"]],[s.angularaxis,["endpadding"],["endPadding"]],[s.radialaxis,["showline"],["gridLinesVisible"]],[s.radialaxis,["tickorientation"],["tickOrientation"]],[s.radialaxis,["ticksuffix"],["ticksSuffix"]],[s.radialaxis,["range"],["domain"]],[s.angularAxis,["showline"],["gridLinesVisible"]],[s.angularAxis,["showticklabels"],["labelsVisible"]],[s.angularAxis,["nticks"],["ticksCount"]],[s.angularAxis,["tickorientation"],["tickOrientation"]],[s.angularAxis,["ticksuffix"],["ticksSuffix"]],[s.angularAxis,["range"],["domain"]],[s.angularAxis,["endpadding"],["endPadding"]],[s.radialAxis,["showline"],["gridLinesVisible"]],[s.radialAxis,["tickorientation"],["tickOrientation"]],[s.radialAxis,["ticksuffix"],["ticksSuffix"]],[s.radialAxis,["range"],["domain"]],[s.font,["outlinecolor"],["outlineColor"]],[s.legend,["traceorder"],["reverseOrder"]],[s,["labeloffset"],["labelOffset"]],[s,["defaultcolorrange"],["defaultColorRange"]]];if(l.forEach(function(t,n){o.util.translator.apply(null,t.concat(e))}),e?("undefined"!=typeof s.tickLength&&(s.angularaxis.ticklen=s.tickLength,delete s.tickLength),s.tickColor&&(s.angularaxis.tickcolor=s.tickColor,delete s.tickColor)):(s.angularAxis&&"undefined"!=typeof s.angularAxis.ticklen&&(s.tickLength=s.angularAxis.ticklen),s.angularAxis&&"undefined"!=typeof s.angularAxis.tickcolor&&(s.tickColor=s.angularAxis.tickcolor)),s.legend&&"boolean"!=typeof s.legend.reverseOrder&&(s.legend.reverseOrder="normal"!=s.legend.reverseOrder),s.legend&&"boolean"==typeof s.legend.traceorder&&(s.legend.traceorder=s.legend.traceorder?"reversed":"normal",delete s.legend.reverseOrder),s.margin&&"undefined"!=typeof s.margin.t){var u=["t","r","b","l","pad"],c=["top","right","bottom","left","pad"],f={};i.entries(s.margin).forEach(function(t,e){f[c[u.indexOf(t.key)]]=t.value}),s.margin=f}e&&(delete s.needsEndSpacing,delete s.minorTickColor,delete s.minorTicks,delete s.angularaxis.ticksCount,delete s.angularaxis.ticksCount,delete s.angularaxis.ticksStep,delete s.angularaxis.rewriteTicks,delete 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y}},{"../../components/colorscale/has_colorscale":210,"../../components/colorscale/make_scale_function":214,"../../lib":273,"../scatter/colorscale_calc":341,"../scatter/make_bubble_size_func":351,"../scatter/subtypes":356,"fast-isnumeric":11}],362:[function(t,e,n){"use strict";function r(){return{geojson:i(),layout:{visibility:"none"},paint:{}}}function i(){return{type:"Point",coordinates:[]}}function o(t,e){return{type:"Polygon",coordinates:e}}function a(t,e){return{type:"MultiLineString",coordinates:e}}function s(t,e){function n(t,n,r,i){void 0===e[n][r]&&(e[n][r]=i),t[n]=e[n][r]}for(var r=t[0].trace,i=r.marker,o=Array.isArray(i.color),a=Array.isArray(i.size),s=[],l=0;l<t.length;l++){var u=t[l],c={};o&&n(c,v,u.mcc,l),a&&n(c,y,u.mrc,l),s.push({type:"Feature",geometry:{type:"Point",coordinates:u.lonlat},properties:c})}return{type:"FeatureCollection",features:s}}function l(t){for(var e=t[0].trace,n=e.marker||{},r=n.symbol,i=e.text,o="circle"!==r?h(r):d,a=m.hasText(e)?h(i):d,s=[],l=0;l<t.length;l++){var u=t[l];s.push({type:"Feature",geometry:{type:"Point",coordinates:u.lonlat},properties:{symbol:o(u.mx),text:a(u.tx)}})}return{type:"FeatureCollection",features:s}}function u(t,e){var n,r=t.marker;if(Array.isArray(r.color)){for(var i=Object.keys(e[v]),o=[],a=0;a<i.length;a++){var s=i[a];o.push([e[v][s],s])}n={property:v,stops:o}}else n=r.color;return n}function c(t,e){var n,r=t.marker;if(Array.isArray(r.size)){for(var i=Object.keys(e[y]),o=[],a=0;a<i.length;a++){var s=i[a];o.push([e[y][s],+s])}o.sort(function(t,e){return t[0]-e[0]}),n={property:y,stops:o}}else n=r.size/2;return n}function f(t){for(var e=t[0].trace,n=e.connectgaps,r=[],i=[],o=0;o<t.length;o++){var a=t[o];i.push(a.lonlat),!n&&a.gapAfter&&i.length>0&&(r.push(i),i=[])}return r.push(i),r}function h(t){return Array.isArray(t)?function(t){return t}:t?function(){return t}:d}function d(){return""}var p=t("../../lib"),m=t("../scatter/subtypes"),g=t("../../plots/mapbox/convert_text_opts"),v="circle-color",y="circle-radius";e.exports=function(t){var e=t[0].trace,n=e.visible===!0,i="none"!==e.fill,h=m.hasLines(e),d=m.hasMarkers(e),x=m.hasText(e),b=d&&"circle"===e.marker.symbol,_=d&&"circle"!==e.marker.symbol,w=r(),M=r(),k=r(),S=r(),T={fill:w,line:M,circle:k,symbol:S};if(!n)return T;var A;if((i||h)&&(A=f(t)),i&&(w.geojson=o(t,A),w.layout.visibility="visible",p.extendFlat(w.paint,{"fill-color":e.fillcolor})),h&&(M.geojson=a(t,A),M.layout.visibility="visible",p.extendFlat(M.paint,{"line-width":e.line.width,"line-color":e.line.color,"line-opacity":e.opacity})),b){var z={};z[v]={},z[y]={},k.geojson=s(t,z),k.layout.visibility="visible",p.extendFlat(k.paint,{"circle-opacity":e.opacity*e.marker.opacity,"circle-color":u(e,z),"circle-radius":c(e,z)})}if((_||x)&&(S.geojson=l(t),p.extendFlat(S.layout,{visibility:"visible","icon-image":"{symbol}-15","text-field":"{text}"}),_&&(p.extendFlat(S.layout,{"icon-size":e.marker.size/10}),p.extendFlat(S.paint,{"icon-opacity":e.opacity*e.marker.opacity,"icon-color":e.marker.color})),x)){var E=(e.marker||{}).size,L=g(e.textposition,E);p.extendFlat(S.layout,{"text-size":e.textfont.size,"text-anchor":L.anchor,"text-offset":L.offset}),p.extendFlat(S.paint,{"text-color":e.textfont.color,"text-opacity":e.opacity})}return T}},{"../../lib":273,"../../plots/mapbox/convert_text_opts":315,"../scatter/subtypes":356}],363:[function(t,e,n){"use strict";function r(t,e,n){var r=n("lon")||[],i=n("lat")||[],o=Math.min(r.length,i.length);return o<r.length&&(e.lon=r.slice(0,o)),o<i.length&&(e.lat=i.slice(0,o)),o}var i=t("../../lib"),o=t("../scatter/subtypes"),a=t("../scatter/marker_defaults"),s=t("../scatter/line_defaults"),l=t("../scatter/text_defaults"),u=t("../scatter/fillcolor_defaults"),c=t("./attributes"),f=t("../scatter/attributes");e.exports=function(t,e,n,h){function d(n,r){return i.coerce(t,e,c,n,r)}function p(n,r){var o=n.indexOf(".line")===-1?c:f;return i.coerce(t,e,o,n,r)}var m=r(t,e,d);if(!m)return void(e.visible=!1);if(d("text"),d("mode"),o.hasLines(e)&&(s(t,e,n,h,d),d("connectgaps")),o.hasMarkers(e)){a(t,e,n,h,p);var g=e.marker;"circle"!==g.symbol&&(Array.isArray(g.size)&&(g.size=g.size[0]),Array.isArray(g.color)&&(g.color=g.color[0]))}o.hasText(e)&&l(t,e,h,d),d("fill"),"none"!==e.fill&&u(t,e,n,d),d("hoverinfo",1===h._dataLength?"lon+lat+text":void 0)}},{"../../lib":273,"../scatter/attributes":337,"../scatter/fillcolor_defaults":344,"../scatter/line_defaults":348,"../scatter/marker_defaults":352,"../scatter/subtypes":356,"../scatter/text_defaults":357,"./attributes":360}],364:[function(t,e,n){"use strict";function r(t,e){function n(t){return t+"\xb0"}var r=t.hoverinfo.split("+"),i=r.indexOf("all")!==-1,o=r.indexOf("lon")!==-1,a=r.indexOf("lat")!==-1,s=e.lonlat,l=[];
++return i||o&&a?l.push("("+n(s[0])+", "+n(s[1])+")"):o?l.push("lon: "+n(s[0])):a&&l.push("lat: "+n(s[1])),(i||r.indexOf("text")!==-1)&&l.push(e.tx||t.text),l.join("<br>")}var i=t("../../plots/cartesian/graph_interact"),o=t("../scatter/get_trace_color");e.exports=function(t,e,n){function a(t){var e=t.lonlat,r=Math.abs(u.c2p(e)-u.c2p([d,e[1]])),i=Math.abs(c.c2p(e)-c.c2p([e[0],n])),o=Math.max(3,t.mrc||0);return Math.max(Math.sqrt(r*r+i*i)-o,1-3/o)}var s=t.cd,l=s[0].trace,u=t.xa,c=t.ya,f=e>=0?Math.floor((e+180)/360):Math.ceil((e-180)/360),h=360*f,d=e-h;if(i.getClosest(s,a,t),t.index!==!1){var p=s[t.index],m=p.lonlat,g=[m[0]+h,m[1]],v=u.c2p(g),y=c.c2p(g),x=p.mrc||1;return t.x0=v-x,t.x1=v+x,t.y0=y-x,t.y1=y+x,t.color=o(l,p),t.extraText=r(l,p),[t]}}},{"../../plots/cartesian/graph_interact":301,"../scatter/get_trace_color":345}],365:[function(t,e,n){"use strict";var r={};r.attributes=t("./attributes"),r.supplyDefaults=t("./defaults"),r.colorbar=t("../scatter/colorbar"),r.calc=t("./calc"),r.hoverPoints=t("./hover"),r.plot=t("./plot"),r.moduleType="trace",r.name="scattermapbox",r.basePlotModule=t("../../plots/mapbox"),r.categories=["mapbox","gl","symbols","markerColorscale","showLegend"],r.meta={},e.exports=r},{"../../plots/mapbox":316,"../scatter/colorbar":340,"./attributes":360,"./calc":361,"./defaults":363,"./hover":364,"./plot":366}],366:[function(t,e,n){"use strict";function r(t,e){this.mapbox=t,this.map=t.map,this.uid=e,this.idSourceFill=e+"-source-fill",this.idSourceLine=e+"-source-line",this.idSourceCircle=e+"-source-circle",this.idSourceSymbol=e+"-source-symbol",this.idLayerFill=e+"-layer-fill",this.idLayerLine=e+"-layer-line",this.idLayerCircle=e+"-layer-circle",this.idLayerSymbol=e+"-layer-symbol",this.sourceFill=t.createGeoJSONSource(),this.map.addSource(this.idSourceFill,this.sourceFill),this.sourceLine=t.createGeoJSONSource(),this.map.addSource(this.idSourceLine,this.sourceLine),this.sourceCircle=t.createGeoJSONSource(),this.map.addSource(this.idSourceCircle,this.sourceCircle),this.sourceSymbol=t.createGeoJSONSource(),this.map.addSource(this.idSourceSymbol,this.sourceSymbol),this.map.addLayer({id:this.idLayerFill,source:this.idSourceFill,type:"fill"}),this.map.addLayer({id:this.idLayerLine,source:this.idSourceLine,type:"line"}),this.map.addLayer({id:this.idLayerCircle,source:this.idSourceCircle,type:"circle"}),this.map.addLayer({id:this.idLayerSymbol,source:this.idSourceSymbol,type:"symbol"})}function i(t){return"visible"===t.layout.visibility}var o=t("./convert"),a=r.prototype;a.update=function(t){var e=this.mapbox,n=o(t);e.setOptions(this.idLayerFill,"setLayoutProperty",n.fill.layout),e.setOptions(this.idLayerLine,"setLayoutProperty",n.line.layout),e.setOptions(this.idLayerCircle,"setLayoutProperty",n.circle.layout),e.setOptions(this.idLayerSymbol,"setLayoutProperty",n.symbol.layout),i(n.fill)&&(this.sourceFill.setData(n.fill.geojson),e.setOptions(this.idLayerFill,"setPaintProperty",n.fill.paint)),i(n.line)&&(this.sourceLine.setData(n.line.geojson),e.setOptions(this.idLayerLine,"setPaintProperty",n.line.paint)),i(n.circle)&&(this.sourceCircle.setData(n.circle.geojson),e.setOptions(this.idLayerCircle,"setPaintProperty",n.circle.paint)),i(n.symbol)&&(this.sourceSymbol.setData(n.symbol.geojson),e.setOptions(this.idLayerSymbol,"setPaintProperty",n.symbol.paint))},a.dispose=function(){var t=this.map;t.removeLayer(this.idLayerFill),t.removeLayer(this.idLayerLine),t.removeLayer(this.idLayerCircle),t.removeLayer(this.idLayerSymbol),t.removeSource(this.idSourceFill),t.removeSource(this.idSourceLine),t.removeSource(this.idSourceCircle),t.removeSource(this.idSourceSymbol)},e.exports=function(t,e){var n=e[0].trace,i=new r(t,n.uid);return i.update(e),i}},{"./convert":362}]},{},[4])(4)});
+\ No newline at end of file
+diff --git a/dist/plotly-with-meta.js b/dist/plotly-with-meta.js
+index 2450c1b..a8ec973 100644
+--- a/dist/plotly-with-meta.js
++++ b/dist/plotly-with-meta.js
+@@ -68,7 +68,7 @@ for(var selector in rules) {
+     Plotly.Lib.addStyleRule(fullSelector, rules[selector]);
+ }
+ 
+-},{"../src/plotly":588}],2:[function(require,module,exports){
++},{"../src/plotly":582}],2:[function(require,module,exports){
+ 'use strict';
+ 
+ module.exports = {
+@@ -199,7 +199,7 @@ module.exports = {
+ 
+ module.exports = require('../src/traces/bar');
+ 
+-},{"../src/traces/bar":673}],4:[function(require,module,exports){
++},{"../src/traces/bar":667}],4:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -210,7 +210,7 @@ module.exports = require('../src/traces/bar');
+ 
+ module.exports = require('../src/traces/box');
+ 
+-},{"../src/traces/box":684}],5:[function(require,module,exports){
++},{"../src/traces/box":678}],5:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -221,7 +221,7 @@ module.exports = require('../src/traces/box');
+ 
+ module.exports = require('../src/traces/choropleth');
+ 
+-},{"../src/traces/choropleth":693}],6:[function(require,module,exports){
++},{"../src/traces/choropleth":687}],6:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -232,7 +232,7 @@ module.exports = require('../src/traces/choropleth');
+ 
+ module.exports = require('../src/traces/contour');
+ 
+-},{"../src/traces/contour":700}],7:[function(require,module,exports){
++},{"../src/traces/contour":694}],7:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -243,7 +243,7 @@ module.exports = require('../src/traces/contour');
+ 
+ module.exports = require('../src/core');
+ 
+-},{"../src/core":556}],8:[function(require,module,exports){
++},{"../src/core":550}],8:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -254,7 +254,7 @@ module.exports = require('../src/core');
+ 
+ module.exports = require('../src/traces/heatmap');
+ 
+-},{"../src/traces/heatmap":712}],9:[function(require,module,exports){
++},{"../src/traces/heatmap":706}],9:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -265,7 +265,7 @@ module.exports = require('../src/traces/heatmap');
+ 
+ module.exports = require('../src/traces/histogram');
+ 
+-},{"../src/traces/histogram":723}],10:[function(require,module,exports){
++},{"../src/traces/histogram":717}],10:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -276,7 +276,7 @@ module.exports = require('../src/traces/histogram');
+ 
+ module.exports = require('../src/traces/histogram2d');
+ 
+-},{"../src/traces/histogram2d":728}],11:[function(require,module,exports){
++},{"../src/traces/histogram2d":722}],11:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -287,7 +287,7 @@ module.exports = require('../src/traces/histogram2d');
+ 
+ module.exports = require('../src/traces/histogram2dcontour');
+ 
+-},{"../src/traces/histogram2dcontour":732}],12:[function(require,module,exports){
++},{"../src/traces/histogram2dcontour":726}],12:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -332,7 +332,7 @@ module.exports = Plotly;
+ 
+ module.exports = require('../src/traces/mesh3d');
+ 
+-},{"../src/traces/mesh3d":736}],14:[function(require,module,exports){
++},{"../src/traces/mesh3d":730}],14:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -343,7 +343,7 @@ module.exports = require('../src/traces/mesh3d');
+ 
+ module.exports = require('../src/traces/pie');
+ 
+-},{"../src/traces/pie":742}],15:[function(require,module,exports){
++},{"../src/traces/pie":736}],15:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -354,7 +354,7 @@ module.exports = require('../src/traces/pie');
+ 
+ module.exports = require('../src/traces/scatter3d');
+ 
+-},{"../src/traces/scatter3d":776}],16:[function(require,module,exports){
++},{"../src/traces/scatter3d":770}],16:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -365,7 +365,7 @@ module.exports = require('../src/traces/scatter3d');
+ 
+ module.exports = require('../src/traces/scattergeo');
+ 
+-},{"../src/traces/scattergeo":780}],17:[function(require,module,exports){
++},{"../src/traces/scattergeo":774}],17:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -376,7 +376,7 @@ module.exports = require('../src/traces/scattergeo');
+ 
+ module.exports = require('../src/traces/scattergl');
+ 
+-},{"../src/traces/scattergl":785}],18:[function(require,module,exports){
++},{"../src/traces/scattergl":779}],18:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -387,7 +387,7 @@ module.exports = require('../src/traces/scattergl');
+ 
+ module.exports = require('../src/traces/scattermapbox');
+ 
+-},{"../src/traces/scattermapbox":791}],19:[function(require,module,exports){
++},{"../src/traces/scattermapbox":785}],19:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -398,7 +398,7 @@ module.exports = require('../src/traces/scattermapbox');
+ 
+ module.exports = require('../src/traces/scatterternary');
+ 
+-},{"../src/traces/scatterternary":797}],20:[function(require,module,exports){
++},{"../src/traces/scatterternary":791}],20:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -409,12945 +409,10064 @@ module.exports = require('../src/traces/scatterternary');
+ 
+ module.exports = require('../src/traces/surface');
+ 
+-},{"../src/traces/surface":806}],21:[function(require,module,exports){
++},{"../src/traces/surface":800}],21:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createFilteredVector
++module.exports = createCamera
+ 
+-var cubicHermite = require('cubic-hermite')
+-var bsearch = require('binary-search-bounds')
++var now         = require('right-now')
++var createView  = require('3d-view')
++var mouseChange = require('mouse-change')
++var mouseWheel  = require('mouse-wheel')
+ 
+-function clamp(lo, hi, x) {
+-  return Math.min(hi, Math.max(lo, x))
+-}
++function createCamera(element, options) {
++  element = element || document.body
++  options = options || {}
+ 
+-function FilteredVector(state0, velocity0, t0) {
+-  this.dimension  = state0.length
+-  this.bounds     = [ new Array(this.dimension), new Array(this.dimension) ]
+-  for(var i=0; i<this.dimension; ++i) {
+-    this.bounds[0][i] = -Infinity
+-    this.bounds[1][i] = Infinity
++  var limits  = [ 0.01, Infinity ]
++  if('distanceLimits' in options) {
++    limits[0] = options.distanceLimits[0]
++    limits[1] = options.distanceLimits[1]
++  }
++  if('zoomMin' in options) {
++    limits[0] = options.zoomMin
++  }
++  if('zoomMax' in options) {
++    limits[1] = options.zoomMax
+   }
+-  this._state     = state0.slice().reverse()
+-  this._velocity  = velocity0.slice().reverse()
+-  this._time      = [ t0 ]
+-  this._scratch   = [ state0.slice(), state0.slice(), state0.slice(), state0.slice(), state0.slice() ]
+-}
+ 
+-var proto = FilteredVector.prototype
++  var view = createView({
++    center: options.center || [0,0,0],
++    up:     options.up     || [0,1,0],
++    eye:    options.eye    || [0,0,10],
++    mode:   options.mode   || 'orbit',
++    distanceLimits: limits
++  })
+ 
+-proto.flush = function(t) {
+-  var idx = bsearch.gt(this._time, t) - 1
+-  if(idx <= 0) {
+-    return
+-  }
+-  this._time.splice(0, idx)
+-  this._state.splice(0, idx * this.dimension)
+-  this._velocity.splice(0, idx * this.dimension)
+-}
++  var pmatrix = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
++  var distance = 0.0
++  var width   = element.clientWidth
++  var height  = element.clientHeight
+ 
+-proto.curve = function(t) {
+-  var time      = this._time
+-  var n         = time.length
+-  var idx       = bsearch.le(time, t)
+-  var result    = this._scratch[0]
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var d         = this.dimension
+-  var bounds    = this.bounds
+-  if(idx < 0) {
+-    var ptr = d-1
+-    for(var i=0; i<d; ++i, --ptr) {
+-      result[i] = state[ptr]
+-    }
+-  } else if(idx >= n-1) {
+-    var ptr = state.length-1
+-    var tf = t - time[n-1]
+-    for(var i=0; i<d; ++i, --ptr) {
+-      result[i] = state[ptr] + tf * velocity[ptr]
+-    }
+-  } else {
+-    var ptr = d * (idx+1) - 1
+-    var t0  = time[idx]
+-    var t1  = time[idx+1]
+-    var dt  = (t1 - t0) || 1.0
+-    var x0  = this._scratch[1]
+-    var x1  = this._scratch[2]
+-    var v0  = this._scratch[3]
+-    var v1  = this._scratch[4]
+-    var steady = true
+-    for(var i=0; i<d; ++i, --ptr) {
+-      x0[i] = state[ptr]
+-      v0[i] = velocity[ptr] * dt
+-      x1[i] = state[ptr+d]
+-      v1[i] = velocity[ptr+d] * dt
+-      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
+-    }
+-    if(steady) {
+-      for(var i=0; i<d; ++i) {
+-        result[i] = x0[i]
++  var camera = {
++    view:               view,
++    element:            element,
++    delay:              options.delay          || 16,
++    rotateSpeed:        options.rotateSpeed    || 1,
++    zoomSpeed:          options.zoomSpeed      || 1,
++    translateSpeed:     options.translateSpeed || 1,
++    flipX:              !!options.flipX,
++    flipY:              !!options.flipY,
++    modes:              view.modes,
++    tick: function() {
++      var t = now()
++      var delay = this.delay
++      view.idle(t-delay)
++      view.flush(t-(100+delay*2))
++      var ctime = t - 2 * delay
++      view.recalcMatrix(ctime)
++      var allEqual = true
++      var matrix = view.computedMatrix
++      for(var i=0; i<16; ++i) {
++        allEqual = allEqual && (pmatrix[i] === matrix[i])
++        pmatrix[i] = matrix[i]
+       }
+-    } else {
+-      cubicHermite(x0, v0, x1, v1, (t-t0)/dt, result)
++      var sizeChanged = 
++          element.clientWidth === width && 
++          element.clientHeight === height
++      width  = element.clientWidth
++      height = element.clientHeight
++      if(allEqual) {
++        return !sizeChanged
++      }
++      distance = Math.exp(view.computedRadius[0])
++      return true
++    },
++    lookAt: function(center, eye, up) {
++      view.lookAt(view.lastT(), center, eye, up)
++    },
++    rotate: function(pitch, yaw, roll) {
++      view.rotate(view.lastT(), pitch, yaw, roll)
++    },
++    pan: function(dx, dy, dz) {
++      view.pan(view.lastT(), dx, dy, dz)
++    },
++    translate: function(dx, dy, dz) {
++      view.translate(view.lastT(), dx, dy, dz)
+     }
+   }
+-  var lo = bounds[0]
+-  var hi = bounds[1]
+-  for(var i=0; i<d; ++i) {
+-    result[i] = clamp(lo[i], hi[i], result[i])
+-  }
+-  return result
+-}
+ 
+-proto.dcurve = function(t) {
+-  var time     = this._time
+-  var n        = time.length
+-  var idx      = bsearch.le(time, t)
+-  var result   = this._scratch[0]
+-  var state    = this._state
+-  var velocity = this._velocity
+-  var d        = this.dimension
+-  if(idx >= n-1) {
+-    var ptr = state.length-1
+-    var tf = t - time[n-1]
+-    for(var i=0; i<d; ++i, --ptr) {
+-      result[i] = velocity[ptr]
+-    }
+-  } else {
+-    var ptr = d * (idx+1) - 1
+-    var t0 = time[idx]
+-    var t1 = time[idx+1]
+-    var dt = (t1 - t0) || 1.0
+-    var x0 = this._scratch[1]
+-    var x1 = this._scratch[2]
+-    var v0 = this._scratch[3]
+-    var v1 = this._scratch[4]
+-    var steady = true
+-    for(var i=0; i<d; ++i, --ptr) {
+-      x0[i] = state[ptr]
+-      v0[i] = velocity[ptr] * dt
+-      x1[i] = state[ptr+d]
+-      v1[i] = velocity[ptr+d] * dt
+-      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
++  Object.defineProperties(camera, {
++    matrix: {
++      get: function() {
++        return view.computedMatrix
++      },
++      set: function(mat) {
++        view.setMatrix(view.lastT(), mat)
++        return view.computedMatrix
++      },
++      enumerable: true
++    },
++    mode: {
++      get: function() {
++        return view.getMode()
++      },
++      set: function(mode) {
++        view.setMode(mode)
++        return view.getMode()
++      },
++      enumerable: true
++    },
++    center: {
++      get: function() {
++        return view.computedCenter
++      },
++      set: function(ncenter) {
++        view.lookAt(view.lastT(), ncenter)
++        return view.computedCenter
++      },
++      enumerable: true
++    },
++    eye: {
++      get: function() {
++        return view.computedEye
++      },
++      set: function(neye) {
++        view.lookAt(view.lastT(), null, neye)
++        return view.computedEye
++      },
++      enumerable: true
++    },
++    up: {
++      get: function() {
++        return view.computedUp
++      },
++      set: function(nup) {
++        view.lookAt(view.lastT(), null, null, nup)
++        return view.computedUp
++      },
++      enumerable: true
++    },
++    distance: {
++      get: function() {
++        return distance
++      },
++      set: function(d) {
++        view.setDistance(view.lastT(), d)
++        return d
++      },
++      enumerable: true
++    },
++    distanceLimits: {
++      get: function() {
++        return view.getDistanceLimits(limits)
++      },
++      set: function(v) {
++        view.setDistanceLimits(v)
++        return v
++      },
++      enumerable: true
+     }
+-    if(steady) {
+-      for(var i=0; i<d; ++i) {
+-        result[i] = 0.0
+-      }
+-    } else {
+-      cubicHermite.derivative(x0, v0, x1, v1, (t-t0)/dt, result)
+-      for(var i=0; i<d; ++i) {
+-        result[i] /= dt
++  })
++  
++  element.addEventListener('contextmenu', function(ev) {
++    ev.preventDefault()
++    return false
++  })
++
++  var lastX = 0, lastY = 0
++  mouseChange(element, function(buttons, x, y, mods) {
++    var scale = 1.0 / element.clientHeight
++    var dx    = scale * (x - lastX)
++    var dy    = scale * (y - lastY)
++
++    var flipX = camera.flipX ? 1 : -1
++    var flipY = camera.flipY ? 1 : -1
++
++    var drot  = Math.PI * camera.rotateSpeed
++
++    var t = now()
++
++    if(buttons & 1) {
++      if(mods.shift) {
++        view.rotate(t, 0, 0, -dx * drot)
++      } else {
++        view.rotate(t, flipX * drot * dx, -flipY * drot * dy, 0)
+       }
++    } else if(buttons & 2) {
++      view.pan(t, -camera.translateSpeed * dx * distance, camera.translateSpeed * dy * distance, 0)
++    } else if(buttons & 4) {
++      var kzoom = camera.zoomSpeed * dy / window.innerHeight * (t - view.lastT()) * 50.0
++      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
+     }
+-  }
+-  return result
+-}
+ 
+-proto.lastT = function() {
+-  var time = this._time
+-  return time[time.length-1]
+-}
++    lastX = x
++    lastY = y
++  })
+ 
+-proto.stable = function() {
+-  var velocity = this._velocity
+-  var ptr = velocity.length
+-  for(var i=this.dimension-1; i>=0; --i) {
+-    if(velocity[--ptr]) {
+-      return false
++  mouseWheel(element, function(dx, dy, dz) {
++    var flipX = camera.flipX ? 1 : -1
++    var flipY = camera.flipY ? 1 : -1
++    var t = now()
++    if(Math.abs(dx) > Math.abs(dy)) {
++      view.rotate(t, 0, 0, -dx * flipX * Math.PI * camera.rotateSpeed / window.innerWidth)
++    } else {
++      var kzoom = camera.zoomSpeed * flipY * dy / window.innerHeight * (t - view.lastT()) / 100.0
++      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
+     }
+-  }
+-  return true
++  }, true)
++
++  return camera
+ }
++},{"3d-view":22,"mouse-change":371,"mouse-wheel":373,"right-now":412}],22:[function(require,module,exports){
++'use strict'
+ 
+-proto.jump = function(t) {
+-  var t0 = this.lastT()
+-  var d  = this.dimension
+-  if(t < t0 || arguments.length !== d+1) {
+-    return
+-  }
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var ptr       = state.length-this.dimension
+-  var bounds    = this.bounds
+-  var lo        = bounds[0]
+-  var hi        = bounds[1]
+-  this._time.push(t0, t)
+-  for(var j=0; j<2; ++j) {
+-    for(var i=0; i<d; ++i) {
+-      state.push(state[ptr++])
+-      velocity.push(0)
+-    }
+-  }
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
+-    velocity.push(0)
++module.exports = createViewController
++
++var createTurntable = require('turntable-camera-controller')
++var createOrbit     = require('orbit-camera-controller')
++var createMatrix    = require('matrix-camera-controller')
++
++function ViewController(controllers, mode) {
++  this._controllerNames = Object.keys(controllers)
++  this._controllerList = this._controllerNames.map(function(n) {
++    return controllers[n]
++  })
++  this._mode   = mode
++  this._active = controllers[mode]
++  if(!this._active) {
++    this._mode   = 'turntable'
++    this._active = controllers.turntable
+   }
++  this.modes = this._controllerNames
++  this.computedMatrix = this._active.computedMatrix
++  this.computedEye    = this._active.computedEye
++  this.computedUp     = this._active.computedUp
++  this.computedCenter = this._active.computedCenter
++  this.computedRadius = this._active.computedRadius
+ }
+ 
+-proto.push = function(t) {
+-  var t0 = this.lastT()
+-  var d  = this.dimension
+-  if(t < t0 || arguments.length !== d+1) {
+-    return
+-  }
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var ptr       = state.length-this.dimension
+-  var dt        = t - t0
+-  var bounds    = this.bounds
+-  var lo        = bounds[0]
+-  var hi        = bounds[1]
+-  var sf        = (dt > 1e-6) ? 1/dt : 0
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    var xc = clamp(lo[i-1], hi[i-1], arguments[i])
+-    state.push(xc)
+-    velocity.push((xc - state[ptr++]) * sf)
++var proto = ViewController.prototype
++
++var COMMON_METHODS = [
++  ['flush', 1],
++  ['idle', 1],
++  ['lookAt', 4],
++  ['rotate', 4],
++  ['pan', 4],
++  ['translate', 4],
++  ['setMatrix', 2],
++  ['setDistanceLimits', 2],
++  ['setDistance', 2]
++]
++
++COMMON_METHODS.forEach(function(method) {
++  var name = method[0]
++  var argNames = []
++  for(var i=0; i<method[1]; ++i) {
++    argNames.push('a'+i)
+   }
++  var code = 'var cc=this._controllerList;for(var i=0;i<cc.length;++i){cc[i].'+method[0]+'('+argNames.join()+')}'
++  proto[name] = Function.apply(null, argNames.concat(code))
++})
++
++proto.recalcMatrix = function(t) {
++  this._active.recalcMatrix(t)
+ }
+ 
+-proto.set = function(t) {
+-  var d = this.dimension
+-  if(t < this.lastT() || arguments.length !== d+1) {
+-    return
+-  }
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var bounds    = this.bounds
+-  var lo        = bounds[0]
+-  var hi        = bounds[1]
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
+-    velocity.push(0)
+-  }
++proto.getDistance = function(t) {
++  return this._active.getDistance(t)
++}
++proto.getDistanceLimits = function(out) {
++  return this._active.getDistanceLimits(out)
+ }
+ 
+-proto.move = function(t) {
+-  var t0 = this.lastT()
+-  var d  = this.dimension
+-  if(t <= t0 || arguments.length !== d+1) {
+-    return
+-  }
+-  var state    = this._state
+-  var velocity = this._velocity
+-  var statePtr = state.length - this.dimension
+-  var bounds   = this.bounds
+-  var lo       = bounds[0]
+-  var hi       = bounds[1]
+-  var dt       = t - t0
+-  var sf       = (dt > 1e-6) ? 1/dt : 0.0
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    var dx = arguments[i]
+-    state.push(clamp(lo[i-1], hi[i-1], state[statePtr++] + dx))
+-    velocity.push(dx * sf)
+-  }
++proto.lastT = function() {
++  return this._active.lastT()
+ }
+ 
+-proto.idle = function(t) {
+-  var t0 = this.lastT()
+-  if(t < t0) {
++proto.setMode = function(mode) {
++  if(mode === this._mode) {
+     return
+   }
+-  var d        = this.dimension
+-  var state    = this._state
+-  var velocity = this._velocity
+-  var statePtr = state.length-d
+-  var bounds   = this.bounds
+-  var lo       = bounds[0]
+-  var hi       = bounds[1]
+-  var dt       = t - t0
+-  this._time.push(t)
+-  for(var i=d-1; i>=0; --i) {
+-    state.push(clamp(lo[i], hi[i], state[statePtr] + dt * velocity[statePtr]))
+-    velocity.push(0)
+-    statePtr += 1
++  var idx = this._controllerNames.indexOf(mode)
++  if(idx < 0) {
++    return
+   }
++  var prev  = this._active
++  var next  = this._controllerList[idx]
++  var lastT = Math.max(prev.lastT(), next.lastT())
++
++  prev.recalcMatrix(lastT)
++  next.setMatrix(lastT, prev.computedMatrix)
++  
++  this._active = next
++  this._mode   = mode
++
++  //Update matrix properties
++  this.computedMatrix = this._active.computedMatrix
++  this.computedEye    = this._active.computedEye
++  this.computedUp     = this._active.computedUp
++  this.computedCenter = this._active.computedCenter
++  this.computedRadius = this._active.computedRadius
+ }
+ 
+-function getZero(d) {
+-  var result = new Array(d)
+-  for(var i=0; i<d; ++i) {
+-    result[i] = 0.0
+-  }
+-  return result
++proto.getMode = function() {
++  return this._mode
+ }
+ 
+-function createFilteredVector(initState, initVelocity, initTime) {
+-  switch(arguments.length) {
+-    case 0:
+-      return new FilteredVector([0], [0], 0)
+-    case 1:
+-      if(typeof initState === 'number') {
+-        var zero = getZero(initState)
+-        return new FilteredVector(zero, zero, 0)
+-      } else {
+-        return new FilteredVector(initState, getZero(initState.length), 0)
+-      }
+-    case 2:
+-      if(typeof initVelocity === 'number') {
+-        var zero = getZero(initState.length)
+-        return new FilteredVector(initState, zero, +initVelocity)
+-      } else {
+-        initTime = 0
+-      }
+-    case 3:
+-      if(initState.length !== initVelocity.length) {
+-        throw new Error('state and velocity lengths must match')
+-      }
+-      return new FilteredVector(initState, initVelocity, initTime)
+-  }
++function createViewController(options) {
++  options = options || {}
++
++  var eye       = options.eye    || [0,0,1]
++  var center    = options.center || [0,0,0]
++  var up        = options.up     || [0,1,0]
++  var limits    = options.distanceLimits || [0, Infinity]
++  var mode      = options.mode   || 'turntable'
++
++  var turntable = createTurntable()
++  var orbit     = createOrbit()
++  var matrix    = createMatrix()
++
++  turntable.setDistanceLimits(limits[0], limits[1])
++  turntable.lookAt(0, eye, center, up)
++  orbit.setDistanceLimits(limits[0], limits[1])
++  orbit.lookAt(0, eye, center, up)
++  matrix.setDistanceLimits(limits[0], limits[1])
++  matrix.lookAt(0, eye, center, up)
++
++  return new ViewController({
++    turntable: turntable,
++    orbit: orbit,
++    matrix: matrix
++  }, mode)
+ }
++},{"matrix-camera-controller":369,"orbit-camera-controller":389,"turntable-camera-controller":446}],23:[function(require,module,exports){
++'use strict'
+ 
+-},{"binary-search-bounds":22,"cubic-hermite":23}],22:[function(require,module,exports){
+-"use strict"
++var weakMap      = typeof WeakMap === 'undefined' ? require('weak-map') : WeakMap
++var createBuffer = require('gl-buffer')
++var createVAO    = require('gl-vao')
+ 
+-function compileSearch(funcName, predicate, reversed, extraArgs, useNdarray, earlyOut) {
+-  var code = [
+-    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
+-earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
+-";while(l<=h){\
+-var m=(l+h)>>>1,x=a", useNdarray ? ".get(m)" : "[m]"]
+-  if(earlyOut) {
+-    if(predicate.indexOf("c") < 0) {
+-      code.push(";if(x===y){return m}else if(x<=y){")
+-    } else {
+-      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
+-    }
+-  } else {
+-    code.push(";if(", predicate, "){i=m;")
+-  }
+-  if(reversed) {
+-    code.push("l=m+1}else{h=m-1}")
+-  } else {
+-    code.push("h=m-1}else{l=m+1}")
+-  }
+-  code.push("}")
+-  if(earlyOut) {
+-    code.push("return -1};")
+-  } else {
+-    code.push("return i};")
++var TriangleCache = new weakMap()
++
++function createABigTriangle(gl) {
++
++  var triangleVAO = TriangleCache.get(gl)
++  if(!triangleVAO || !gl.isBuffer(triangleVAO._triangleBuffer.buffer)) {
++    var buf = createBuffer(gl, new Float32Array([-1, -1, -1, 4, 4, -1]))
++    triangleVAO = createVAO(gl, [
++      { buffer: buf,
++        type: gl.FLOAT,
++        size: 2
++      }
++    ])
++    triangleVAO._triangleBuffer = buf
++    TriangleCache.set(gl, triangleVAO)
+   }
+-  return code.join("")
++  triangleVAO.bind()
++  gl.drawArrays(gl.TRIANGLES, 0, 3)
++  triangleVAO.unbind()
+ }
+ 
+-function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
+-  var result = new Function([
+-  compileSearch("A", "x" + predicate + "y", reversed, ["y"], false, earlyOut),
+-  compileSearch("B", "x" + predicate + "y", reversed, ["y"], true, earlyOut),
+-  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], false, earlyOut),
+-  compileSearch("Q", "c(x,y)" + predicate + "0", reversed, ["y", "c"], true, earlyOut),
+-"function dispatchBsearch", suffix, "(a,y,c,l,h){\
+-if(a.shape){\
+-if(typeof(c)==='function'){\
+-return Q(a,(l===undefined)?0:l|0,(h===undefined)?a.shape[0]-1:h|0,y,c)\
+-}else{\
+-return B(a,(c===undefined)?0:c|0,(l===undefined)?a.shape[0]-1:l|0,y)\
+-}}else{\
+-if(typeof(c)==='function'){\
+-return P(a,(l===undefined)?0:l|0,(h===undefined)?a.length-1:h|0,y,c)\
+-}else{\
+-return A(a,(c===undefined)?0:c|0,(l===undefined)?a.length-1:l|0,y)\
+-}}}\
+-return dispatchBsearch", suffix].join(""))
+-  return result()
+-}
++module.exports = createABigTriangle
+ 
+-module.exports = {
+-  ge: compileBoundsSearch(">=", false, "GE"),
+-  gt: compileBoundsSearch(">", false, "GT"),
+-  lt: compileBoundsSearch("<", true, "LT"),
+-  le: compileBoundsSearch("<=", true, "LE"),
+-  eq: compileBoundsSearch("-", true, "EQ", true)
++},{"gl-buffer":121,"gl-vao":206,"weak-map":465}],24:[function(require,module,exports){
++var padLeft = require('pad-left')
++
++module.exports = addLineNumbers
++function addLineNumbers (string, start, delim) {
++  start = typeof start === 'number' ? start : 1
++  delim = delim || ': '
++
++  var lines = string.split(/\r?\n/)
++  var totalDigits = String(lines.length + start - 1).length
++  return lines.map(function (line, i) {
++    var c = i + start
++    var digits = String(c).length
++    var prefix = padLeft(c, totalDigits - digits)
++    return prefix + delim + line
++  }).join('\n')
+ }
+ 
+-},{}],23:[function(require,module,exports){
+-"use strict"
++},{"pad-left":390}],25:[function(require,module,exports){
++'use strict'
+ 
+-function dcubicHermite(p0, v0, p1, v1, t, f) {
+-  var dh00 = 6*t*t-6*t,
+-      dh10 = 3*t*t-4*t + 1,
+-      dh01 = -6*t*t+6*t,
+-      dh11 = 3*t*t-2*t
+-  if(p0.length) {
+-    if(!f) {
+-      f = new Array(p0.length)
++module.exports = affineHull
++
++var orient = require('robust-orientation')
++
++function linearlyIndependent(points, d) {
++  var nhull = new Array(d+1)
++  for(var i=0; i<points.length; ++i) {
++    nhull[i] = points[i]
++  }
++  for(var i=0; i<=points.length; ++i) {
++    for(var j=points.length; j<=d; ++j) {
++      var x = new Array(d)
++      for(var k=0; k<d; ++k) {
++        x[k] = Math.pow(j+1-i, k)
++      }
++      nhull[j] = x
+     }
+-    for(var i=p0.length-1; i>=0; --i) {
+-      f[i] = dh00*p0[i] + dh10*v0[i] + dh01*p1[i] + dh11*v1[i]
++    var o = orient.apply(void 0, nhull)
++    if(o) {
++      return true
+     }
+-    return f
+   }
+-  return dh00*p0 + dh10*v0 + dh01*p1[i] + dh11*v1
++  return false
+ }
+ 
+-function cubicHermite(p0, v0, p1, v1, t, f) {
+-  var ti  = (t-1), t2 = t*t, ti2 = ti*ti,
+-      h00 = (1+2*t)*ti2,
+-      h10 = t*ti2,
+-      h01 = t2*(3-2*t),
+-      h11 = t2*ti
+-  if(p0.length) {
+-    if(!f) {
+-      f = new Array(p0.length)
++function affineHull(points) {
++  var n = points.length
++  if(n === 0) {
++    return []
++  }
++  if(n === 1) {
++    return [0]
++  }
++  var d = points[0].length
++  var frame = [ points[0] ]
++  var index = [ 0 ]
++  for(var i=1; i<n; ++i) {
++    frame.push(points[i])
++    if(!linearlyIndependent(frame, d)) {
++      frame.pop()
++      continue
+     }
+-    for(var i=p0.length-1; i>=0; --i) {
+-      f[i] = h00*p0[i] + h10*v0[i] + h01*p1[i] + h11*v1[i]
++    index.push(i)
++    if(index.length === d+1) {
++      return index
+     }
+-    return f
+   }
+-  return h00*p0 + h10*v0 + h01*p1 + h11*v1
++  return index
+ }
++},{"robust-orientation":418}],26:[function(require,module,exports){
++'use strict'
+ 
+-module.exports = cubicHermite
+-module.exports.derivative = dcubicHermite
+-},{}],24:[function(require,module,exports){
+-module.exports = cross;
+-
+-/**
+- * Computes the cross product of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-function cross(out, a, b) {
+-    var ax = a[0], ay = a[1], az = a[2],
+-        bx = b[0], by = b[1], bz = b[2]
++module.exports = alphaComplex
+ 
+-    out[0] = ay * bz - az * by
+-    out[1] = az * bx - ax * bz
+-    out[2] = ax * by - ay * bx
+-    return out
+-}
+-},{}],25:[function(require,module,exports){
+-module.exports = dot;
++var delaunay = require('delaunay-triangulate')
++var circumradius = require('circumradius')
+ 
+-/**
+- * Calculates the dot product of two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-function dot(a, b) {
+-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]
++function alphaComplex(alpha, points) {
++  return delaunay(points).filter(function(cell) {
++    var simplex = new Array(cell.length)
++    for(var i=0; i<cell.length; ++i) {
++      simplex[i] = points[cell[i]]
++    }
++    return circumradius(simplex) * alpha < 1
++  })
+ }
+-},{}],26:[function(require,module,exports){
+-module.exports = length;
++},{"circumradius":70,"delaunay-triangulate":91}],27:[function(require,module,exports){
++module.exports = alphaShape
+ 
+-/**
+- * Calculates the length of a vec3
+- *
+- * @param {vec3} a vector to calculate length of
+- * @returns {Number} length of a
+- */
+-function length(a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2]
+-    return Math.sqrt(x*x + y*y + z*z)
+-}
+-},{}],27:[function(require,module,exports){
+-module.exports = lerp;
++var ac = require('alpha-complex')
++var bnd = require('simplicial-complex-boundary')
+ 
+-/**
+- * Performs a linear interpolation between two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
+- */
+-function lerp(out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1],
+-        az = a[2]
+-    out[0] = ax + t * (b[0] - ax)
+-    out[1] = ay + t * (b[1] - ay)
+-    out[2] = az + t * (b[2] - az)
+-    return out
++function alphaShape(alpha, points) {
++  return bnd(ac(alpha, points))
+ }
+-},{}],28:[function(require,module,exports){
+-module.exports = normalize;
++},{"alpha-complex":26,"simplicial-complex-boundary":426}],28:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Normalize a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to normalize
+- * @returns {vec3} out
+- */
+-function normalize(out, a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2]
+-    var len = x*x + y*y + z*z
+-    if (len > 0) {
+-        //TODO: evaluate use of glm_invsqrt here?
+-        len = 1 / Math.sqrt(len)
+-        out[0] = a[0] * len
+-        out[1] = a[1] * len
+-        out[2] = a[2] * len
+-    }
+-    return out
+-}
+-},{}],29:[function(require,module,exports){
+-'use strict'
++var arraytools  = function () {
+ 
+-var bsearch   = require('binary-search-bounds')
+-var m4interp  = require('mat4-interpolate')
+-var invert44  = require('gl-mat4/invert')
+-var rotateX   = require('gl-mat4/rotateX')
+-var rotateY   = require('gl-mat4/rotateY')
+-var rotateZ   = require('gl-mat4/rotateZ')
+-var lookAt    = require('gl-mat4/lookAt')
+-var translate = require('gl-mat4/translate')
+-var scale     = require('gl-mat4/scale')
+-var normalize = require('gl-vec3/normalize')
++  var that = {};
+ 
+-var DEFAULT_CENTER = [0,0,0]
++  var RGB_REGEX =  /^rgba?\(\s*\d{1,3}\s*,\s*\d{1,3}\s*,\s*\d{1,3}\s*(,.*)?\)$/;
++  var RGB_GROUP_REGEX = /^rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,?\s*(.*)?\)$/;
+ 
+-module.exports = createMatrixCameraController
++  function isPlainObject (v) {
++    return !Array.isArray(v) && v !== null && typeof v === 'object';
++  }
+ 
+-function MatrixCameraController(initialMatrix) {
+-  this._components    = initialMatrix.slice()
+-  this._time          = [0]
+-  this.prevMatrix     = initialMatrix.slice()
+-  this.nextMatrix     = initialMatrix.slice()
+-  this.computedMatrix = initialMatrix.slice()
+-  this.computedInverse = initialMatrix.slice()
+-  this.computedEye    = [0,0,0]
+-  this.computedUp     = [0,0,0]
+-  this.computedCenter = [0,0,0]
+-  this.computedRadius = [0]
+-  this._limits        = [-Infinity, Infinity]
+-}
++  function linspace (start, end, num) {
++    var inc = (end - start) / Math.max(num - 1, 1);
++    var a = [];
++    for( var ii = 0; ii < num; ii++)
++      a.push(start + ii*inc);
++    return a;
++  }
+ 
+-var proto = MatrixCameraController.prototype
++  function zip () {
++      var arrays = [].slice.call(arguments);
++      var lengths = arrays.map(function (a) {return a.length;});
++      var len = Math.min.apply(null, lengths);
++      var zipped = [];
++      for (var i = 0; i < len; i++) {
++          zipped[i] = [];
++          for (var j = 0; j < arrays.length; ++j) {
++              zipped[i][j] = arrays[j][i];
++          }
++      }
++      return zipped;
++  }
+ 
+-proto.recalcMatrix = function(t) {
+-  var time = this._time
+-  var tidx = bsearch.le(time, t)
+-  var mat = this.computedMatrix
+-  if(tidx < 0) {
+-    return
++  function zip3 (a, b, c) {
++      var len = Math.min.apply(null, [a.length, b.length, c.length]);
++      var result = [];
++      for (var n = 0; n < len; n++) {
++          result.push([a[n], b[n], c[n]]);
++      }
++      return result;
+   }
+-  var comps = this._components
+-  if(tidx === time.length-1) {
+-    var ptr = 16*tidx
+-    for(var i=0; i<16; ++i) {
+-      mat[i] = comps[ptr++]
+-    }
+-  } else {
+-    var dt = (time[tidx+1] - time[tidx])
+-    var ptr = 16*tidx
+-    var prev = this.prevMatrix
+-    var allEqual = true
+-    for(var i=0; i<16; ++i) {
+-      prev[i] = comps[ptr++]
+-    }
+-    var next = this.nextMatrix
+-    for(var i=0; i<16; ++i) {
+-      next[i] = comps[ptr++]
+-      allEqual = allEqual && (prev[i] === next[i])
+-    }
+-    if(dt < 1e-6 || allEqual) {
+-      for(var i=0; i<16; ++i) {
+-        mat[i] = prev[i]
++
++  function sum (A) {
++    var acc = 0;
++    accumulate(A, acc);
++    function accumulate(x) {
++      for (var i = 0; i < x.length; i++) {
++        if (Array.isArray(x[i]))
++          accumulate(x[i], acc);
++        else
++          acc += x[i];
+       }
+-    } else {
+-      m4interp(mat, prev, next, (t - time[tidx])/dt)
+     }
++    return acc;
+   }
+ 
+-  var up = this.computedUp
+-  up[0] = mat[1]
+-  up[1] = mat[5]
+-  up[2] = mat[6]
+-  normalize(up, up)
+-
+-  var imat = this.computedInverse
+-  invert44(imat, mat)
+-  var eye = this.computedEye
+-  var w = imat[15]
+-  eye[0] = imat[12]/w
+-  eye[1] = imat[13]/w
+-  eye[2] = imat[14]/w
++  function copy2D (arr) {
++    var carr = [];
++    for (var i = 0; i < arr.length; ++i) {
++      carr[i] = [];
++      for (var j = 0; j < arr[i].length; ++j) {
++        carr[i][j] = arr[i][j];
++      }
++    }
+ 
+-  var center = this.computedCenter
+-  var radius = Math.exp(this.computedRadius[0])
+-  for(var i=0; i<3; ++i) {
+-    center[i] = eye[i] - mat[2+4*i] * radius
++    return carr;
+   }
+-}
+ 
+-proto.idle = function(t) {
+-  if(t < this.lastT()) {
+-    return
+-  }
+-  var mc = this._components
+-  var ptr = mc.length-16
+-  for(var i=0; i<16; ++i) {
+-    mc.push(mc[ptr++])
+-  }
+-  this._time.push(t)
+-}
+ 
+-proto.flush = function(t) {
+-  var idx = bsearch.gt(this._time, t) - 2
+-  if(idx < 0) {
+-    return
++  function copy1D (arr) {
++    var carr = [];
++    for (var i = 0; i < arr.length; ++i) {
++      carr[i] = arr[i];
++    }
++
++    return carr;
+   }
+-  this._time.slice(0, idx)
+-  this._components.slice(0, 16*idx)
+-}
+ 
+-proto.lastT = function() {
+-  return this._time[this._time.length-1]
+-}
+ 
+-proto.lookAt = function(t, eye, center, up) {
+-  this.recalcMatrix(t)
+-  eye    = eye || this.computedEye
+-  center = center || DEFAULT_CENTER
+-  up     = up || this.computedUp
+-  this.setMatrix(t, lookAt(this.computedMatrix, eye, center, up))
+-  var d2 = 0.0
+-  for(var i=0; i<3; ++i) {
+-    d2 += Math.pow(center[i] - eye[i], 2)
++  function isEqual(arr1, arr2) {
++    if(arr1.length !== arr2.length)
++      return false;
++    for(var i = arr1.length; i--;) {
++      if(arr1[i] !== arr2[i])
++        return false;
++    }
++
++    return true;
+   }
+-  d2 = Math.log(Math.sqrt(d2))
+-  this.computedRadius[0] = d2
+-}
+ 
+-proto.rotate = function(t, yaw, pitch, roll) {
+-  this.recalcMatrix(t)
+-  var mat = this.computedInverse
+-  if(yaw)   rotateY(mat, mat, yaw)
+-  if(pitch) rotateX(mat, mat, pitch)
+-  if(roll)  rotateZ(mat, mat, roll)
+-  this.setMatrix(t, invert44(this.computedMatrix, mat))
+-}
+ 
+-var tvec = [0,0,0]
++  function str2RgbArray(str, twoFiftySix) {
++    // convert hex or rbg strings to 0->1 or 0->255 rgb array
++    var rgb,
++        match;
+ 
+-proto.pan = function(t, dx, dy, dz) {
+-  tvec[0] = -(dx || 0.0)
+-  tvec[1] = -(dy || 0.0)
+-  tvec[2] = -(dz || 0.0)
+-  this.recalcMatrix(t)
+-  var mat = this.computedInverse
+-  translate(mat, mat, tvec)
+-  this.setMatrix(t, invert44(mat, mat))
+-}
++    if (typeof str !== 'string') return str;
+ 
+-proto.translate = function(t, dx, dy, dz) {
+-  tvec[0] = dx || 0.0
+-  tvec[1] = dy || 0.0
+-  tvec[2] = dz || 0.0
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
+-  translate(mat, mat, tvec)
+-  this.setMatrix(t, mat)
+-}
++    rgb = [];
++    // hex notation
++    if (str[0] === '#') {
++      str = str.substr(1) // remove hash
++      if (str.length === 3) str += str // fff -> ffffff
++      match = parseInt(str, 16);
++      rgb[0] = ((match >> 16) & 255);
++      rgb[1] = ((match >> 8) & 255);
++      rgb[2] = (match & 255);
++    }
+ 
+-proto.setMatrix = function(t, mat) {
+-  if(t < this.lastT()) {
+-    return
+-  }
+-  this._time.push(t)
+-  for(var i=0; i<16; ++i) {
+-    this._components.push(mat[i])
+-  }
+-}
++    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
++    else if (RGB_REGEX.test(str)) {
++      match = str.match(RGB_GROUP_REGEX);
++      rgb[0] = parseInt(match[1]);
++      rgb[1] = parseInt(match[2]);
++      rgb[2] = parseInt(match[3]);
++    }
+ 
+-proto.setDistance = function(t, d) {
+-  this.computedRadius[0] = d
+-}
++    if (!twoFiftySix) {
++      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
++    }
+ 
+-proto.setDistanceLimits = function(a,b) {
+-  var lim = this._limits
+-  lim[0] = a
+-  lim[1] = b
+-}
+ 
+-proto.getDistanceLimits = function(out) {
+-  var lim = this._limits
+-  if(out) {
+-    out[0] = lim[0]
+-    out[1] = lim[1]
+-    return out
++    return rgb;
+   }
+-  return lim
+-}
+-
+-function createMatrixCameraController(options) {
+-  options = options || {}
+-  var matrix = options.matrix || 
+-              [1,0,0,0,
+-               0,1,0,0,
+-               0,0,1,0,
+-               0,0,0,1]
+-  return new MatrixCameraController(matrix)
+-}
+-},{"binary-search-bounds":30,"gl-mat4/invert":143,"gl-mat4/lookAt":144,"gl-mat4/rotateX":148,"gl-mat4/rotateY":149,"gl-mat4/rotateZ":150,"gl-mat4/scale":151,"gl-mat4/translate":152,"gl-vec3/normalize":28,"mat4-interpolate":31}],30:[function(require,module,exports){
+-arguments[4][22][0].apply(exports,arguments)
+-},{"dup":22}],31:[function(require,module,exports){
+-var lerp = require('gl-vec3/lerp')
+ 
+-var recompose = require('mat4-recompose')
+-var decompose = require('mat4-decompose')
+-var determinant = require('gl-mat4/determinant')
+-var slerp = require('quat-slerp')
+ 
+-var state0 = state()
+-var state1 = state()
+-var tmp = state()
++  function str2RgbaArray(str, twoFiftySix) {
++    // convert hex or rbg strings to 0->1 or 0->255 rgb array
++    var rgb,
++        match;
+ 
+-module.exports = interpolate
+-function interpolate(out, start, end, alpha) {
+-    if (determinant(start) === 0 || determinant(end) === 0)
+-        return false
++    if (typeof str !== 'string') return str;
+ 
+-    //decompose the start and end matrices into individual components
+-    var r0 = decompose(start, state0.translate, state0.scale, state0.skew, state0.perspective, state0.quaternion)
+-    var r1 = decompose(end, state1.translate, state1.scale, state1.skew, state1.perspective, state1.quaternion)
+-    if (!r0 || !r1)
+-        return false    
++    rgb = [];
++    // hex notation
++    if (str[0] === '#') {
++      str = str.substr(1) // remove hash
++      if (str.length === 3) str += str // fff -> ffffff
++      match = parseInt(str, 16);
++      rgb[0] = ((match >> 16) & 255);
++      rgb[1] = ((match >> 8) & 255);
++      rgb[2] = (match & 255);
++    }
+ 
++    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
++    else if (RGB_REGEX.test(str)) {
++      match = str.match(RGB_GROUP_REGEX);
++      rgb[0] = parseInt(match[1]);
++      rgb[1] = parseInt(match[2]);
++      rgb[2] = parseInt(match[3]);
++      if (match[4]) rgb[3] = parseFloat(match[4]);
++      else rgb[3] = 1.0;
++    }
+ 
+-    //now lerp/slerp the start and end components into a temporary     lerp(tmptranslate, state0.translate, state1.translate, alpha)
+-    lerp(tmp.translate, state0.translate, state1.translate, alpha)
+-    lerp(tmp.skew, state0.skew, state1.skew, alpha)
+-    lerp(tmp.scale, state0.scale, state1.scale, alpha)
+-    lerp(tmp.perspective, state0.perspective, state1.perspective, alpha)
+-    slerp(tmp.quaternion, state0.quaternion, state1.quaternion, alpha)
+ 
+-    //and recompose into our 'out' matrix
+-    recompose(out, tmp.translate, tmp.scale, tmp.skew, tmp.perspective, tmp.quaternion)
+-    return true
+-}
+ 
+-function state() {
+-    return {
+-        translate: vec3(),
+-        scale: vec3(1),
+-        skew: vec3(),
+-        perspective: vec4(),
+-        quaternion: vec4()
++    if (!twoFiftySix) {
++      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
+     }
+-}
+ 
+-function vec3(n) {
+-    return [n||0,n||0,n||0]
+-}
+ 
+-function vec4() {
+-    return [0,0,0,1]
+-}
+-},{"gl-mat4/determinant":139,"gl-vec3/lerp":27,"mat4-decompose":32,"mat4-recompose":34,"quat-slerp":35}],32:[function(require,module,exports){
+-/*jshint unused:true*/
+-/*
+-Input:  matrix      ; a 4x4 matrix
+-Output: translation ; a 3 component vector
+-        scale       ; a 3 component vector
+-        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
+-        perspective ; a 4 component vector
+-        quaternion  ; a 4 component vector
+-Returns false if the matrix cannot be decomposed, true if it can
++    return rgb;
++  }
+ 
+ 
+-References:
+-https://github.com/kamicane/matrix3d/blob/master/lib/Matrix3d.js
+-https://github.com/ChromiumWebApps/chromium/blob/master/ui/gfx/transform_util.cc
+-http://www.w3.org/TR/css3-transforms/#decomposing-a-3d-matrix
+-*/
+ 
+-var normalize = require('./normalize')
+ 
+-var create = require('gl-mat4/create')
+-var clone = require('gl-mat4/clone')
+-var determinant = require('gl-mat4/determinant')
+-var invert = require('gl-mat4/invert')
+-var transpose = require('gl-mat4/transpose')
+-var vec3 = {
+-    length: require('gl-vec3/length'),
+-    normalize: require('gl-vec3/normalize'),
+-    dot: require('gl-vec3/dot'),
+-    cross: require('gl-vec3/cross')
+-}
+ 
+-var tmp = create()
+-var perspectiveMatrix = create()
+-var tmpVec4 = [0, 0, 0, 0]
+-var row = [ [0,0,0], [0,0,0], [0,0,0] ]
+-var pdum3 = [0,0,0]
++  that.isPlainObject = isPlainObject;
++  that.linspace = linspace;
++  that.zip3 = zip3;
++  that.sum = sum;
++  that.zip = zip;
++  that.isEqual = isEqual;
++  that.copy2D = copy2D;
++  that.copy1D = copy1D;
++  that.str2RgbArray = str2RgbArray;
++  that.str2RgbaArray = str2RgbaArray;
+ 
+-module.exports = function decomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
+-    if (!translation) translation = [0,0,0]
+-    if (!scale) scale = [0,0,0]
+-    if (!skew) skew = [0,0,0]
+-    if (!perspective) perspective = [0,0,0,1]
+-    if (!quaternion) quaternion = [0,0,0,1]
++  return that
+ 
+-    //normalize, if not possible then bail out early
+-    if (!normalize(tmp, matrix))
+-        return false
++}
+ 
+-    // perspectiveMatrix is used to solve for perspective, but it also provides
+-    // an easy way to test for singularity of the upper 3x3 component.
+-    clone(perspectiveMatrix, tmp)
+ 
+-    perspectiveMatrix[3] = 0
+-    perspectiveMatrix[7] = 0
+-    perspectiveMatrix[11] = 0
+-    perspectiveMatrix[15] = 1
++module.exports = arraytools();
+ 
+-    // If the perspectiveMatrix is not invertible, we are also unable to
+-    // decompose, so we'll bail early. Constant taken from SkMatrix44::invert.
+-    if (Math.abs(determinant(perspectiveMatrix) < 1e-8))
+-        return false
++},{}],29:[function(require,module,exports){
++// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
++//
++// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
++//
++// Originally from narwhal.js (http://narwhaljs.org)
++// Copyright (c) 2009 Thomas Robinson <280north.com>
++//
++// Permission is hereby granted, free of charge, to any person obtaining a copy
++// of this software and associated documentation files (the 'Software'), to
++// deal in the Software without restriction, including without limitation the
++// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
++// sell copies of the Software, and to permit persons to whom the Software is
++// furnished to do so, subject to the following conditions:
++//
++// The above copyright notice and this permission notice shall be included in
++// all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
++// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
++// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-    var a03 = tmp[3], a13 = tmp[7], a23 = tmp[11],
+-            a30 = tmp[12], a31 = tmp[13], a32 = tmp[14], a33 = tmp[15]
++// when used in node, this will actually load the util module we depend on
++// versus loading the builtin util module as happens otherwise
++// this is a bug in node module loading as far as I am concerned
++var util = require('util/');
+ 
+-    // First, isolate perspective.
+-    if (a03 !== 0 || a13 !== 0 || a23 !== 0) {
+-        tmpVec4[0] = a03
+-        tmpVec4[1] = a13
+-        tmpVec4[2] = a23
+-        tmpVec4[3] = a33
++var pSlice = Array.prototype.slice;
++var hasOwn = Object.prototype.hasOwnProperty;
+ 
+-        // Solve the equation by inverting perspectiveMatrix and multiplying
+-        // rightHandSide by the inverse.
+-        // resuing the perspectiveMatrix here since it's no longer needed
+-        var ret = invert(perspectiveMatrix, perspectiveMatrix)
+-        if (!ret) return false
+-        transpose(perspectiveMatrix, perspectiveMatrix)
++// 1. The assert module provides functions that throw
++// AssertionError's when particular conditions are not met. The
++// assert module must conform to the following interface.
+ 
+-        //multiply by transposed inverse perspective matrix, into perspective vec4
+-        vec4multMat4(perspective, tmpVec4, perspectiveMatrix)
+-    } else { 
+-        //no perspective
+-        perspective[0] = perspective[1] = perspective[2] = 0
+-        perspective[3] = 1
+-    }
++var assert = module.exports = ok;
+ 
+-    // Next take care of translation
+-    translation[0] = a30
+-    translation[1] = a31
+-    translation[2] = a32
++// 2. The AssertionError is defined in assert.
++// new assert.AssertionError({ message: message,
++//                             actual: actual,
++//                             expected: expected })
+ 
+-    // Now get scale and shear. 'row' is a 3 element array of 3 component vectors
+-    mat3from4(row, tmp)
++assert.AssertionError = function AssertionError(options) {
++  this.name = 'AssertionError';
++  this.actual = options.actual;
++  this.expected = options.expected;
++  this.operator = options.operator;
++  if (options.message) {
++    this.message = options.message;
++    this.generatedMessage = false;
++  } else {
++    this.message = getMessage(this);
++    this.generatedMessage = true;
++  }
++  var stackStartFunction = options.stackStartFunction || fail;
+ 
+-    // Compute X scale factor and normalize first row.
+-    scale[0] = vec3.length(row[0])
+-    vec3.normalize(row[0], row[0])
++  if (Error.captureStackTrace) {
++    Error.captureStackTrace(this, stackStartFunction);
++  }
++  else {
++    // non v8 browsers so we can have a stacktrace
++    var err = new Error();
++    if (err.stack) {
++      var out = err.stack;
+ 
+-    // Compute XY shear factor and make 2nd row orthogonal to 1st.
+-    skew[0] = vec3.dot(row[0], row[1])
+-    combine(row[1], row[1], row[0], 1.0, -skew[0])
++      // try to strip useless frames
++      var fn_name = stackStartFunction.name;
++      var idx = out.indexOf('\n' + fn_name);
++      if (idx >= 0) {
++        // once we have located the function frame
++        // we need to strip out everything before it (and its line)
++        var next_line = out.indexOf('\n', idx + 1);
++        out = out.substring(next_line + 1);
++      }
+ 
+-    // Now, compute Y scale and normalize 2nd row.
+-    scale[1] = vec3.length(row[1])
+-    vec3.normalize(row[1], row[1])
+-    skew[0] /= scale[1]
++      this.stack = out;
++    }
++  }
++};
+ 
+-    // Compute XZ and YZ shears, orthogonalize 3rd row
+-    skew[1] = vec3.dot(row[0], row[2])
+-    combine(row[2], row[2], row[0], 1.0, -skew[1])
+-    skew[2] = vec3.dot(row[1], row[2])
+-    combine(row[2], row[2], row[1], 1.0, -skew[2])
++// assert.AssertionError instanceof Error
++util.inherits(assert.AssertionError, Error);
+ 
+-    // Next, get Z scale and normalize 3rd row.
+-    scale[2] = vec3.length(row[2])
+-    vec3.normalize(row[2], row[2])
+-    skew[1] /= scale[2]
+-    skew[2] /= scale[2]
++function replacer(key, value) {
++  if (util.isUndefined(value)) {
++    return '' + value;
++  }
++  if (util.isNumber(value) && !isFinite(value)) {
++    return value.toString();
++  }
++  if (util.isFunction(value) || util.isRegExp(value)) {
++    return value.toString();
++  }
++  return value;
++}
+ 
++function truncate(s, n) {
++  if (util.isString(s)) {
++    return s.length < n ? s : s.slice(0, n);
++  } else {
++    return s;
++  }
++}
+ 
+-    // At this point, the matrix (in rows) is orthonormal.
+-    // Check for a coordinate system flip.  If the determinant
+-    // is -1, then negate the matrix and the scaling factors.
+-    vec3.cross(pdum3, row[1], row[2])
+-    if (vec3.dot(row[0], pdum3) < 0) {
+-        for (var i = 0; i < 3; i++) {
+-            scale[i] *= -1;
+-            row[i][0] *= -1
+-            row[i][1] *= -1
+-            row[i][2] *= -1
+-        }
+-    }
++function getMessage(self) {
++  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
++         self.operator + ' ' +
++         truncate(JSON.stringify(self.expected, replacer), 128);
++}
+ 
+-    // Now, get the rotations out
+-    quaternion[0] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] - row[1][1] - row[2][2], 0))
+-    quaternion[1] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] + row[1][1] - row[2][2], 0))
+-    quaternion[2] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] - row[1][1] + row[2][2], 0))
+-    quaternion[3] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] + row[1][1] + row[2][2], 0))
++// At present only the three keys mentioned above are used and
++// understood by the spec. Implementations or sub modules can pass
++// other keys to the AssertionError's constructor - they will be
++// ignored.
+ 
+-    if (row[2][1] > row[1][2])
+-        quaternion[0] = -quaternion[0]
+-    if (row[0][2] > row[2][0])
+-        quaternion[1] = -quaternion[1]
+-    if (row[1][0] > row[0][1])
+-        quaternion[2] = -quaternion[2]
+-    return true
+-}
++// 3. All of the following functions must throw an AssertionError
++// when a corresponding condition is not met, with a message that
++// may be undefined if not provided.  All assertion methods provide
++// both the actual and expected values to the assertion error for
++// display purposes.
+ 
+-//will be replaced by gl-vec4 eventually
+-function vec4multMat4(out, a, m) {
+-    var x = a[0], y = a[1], z = a[2], w = a[3];
+-    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
+-    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
+-    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
+-    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
+-    return out;
++function fail(actual, expected, message, operator, stackStartFunction) {
++  throw new assert.AssertionError({
++    message: message,
++    actual: actual,
++    expected: expected,
++    operator: operator,
++    stackStartFunction: stackStartFunction
++  });
+ }
+ 
+-//gets upper-left of a 4x4 matrix into a 3x3 of vectors
+-function mat3from4(out, mat4x4) {
+-    out[0][0] = mat4x4[0]
+-    out[0][1] = mat4x4[1]
+-    out[0][2] = mat4x4[2]
+-    
+-    out[1][0] = mat4x4[4]
+-    out[1][1] = mat4x4[5]
+-    out[1][2] = mat4x4[6]
++// EXTENSION! allows for well behaved errors defined elsewhere.
++assert.fail = fail;
+ 
+-    out[2][0] = mat4x4[8]
+-    out[2][1] = mat4x4[9]
+-    out[2][2] = mat4x4[10]
+-}
++// 4. Pure assertion tests whether a value is truthy, as determined
++// by !!guard.
++// assert.ok(guard, message_opt);
++// This statement is equivalent to assert.equal(true, !!guard,
++// message_opt);. To test strictly for the value true, use
++// assert.strictEqual(true, guard, message_opt);.
+ 
+-function combine(out, a, b, scale1, scale2) {
+-    out[0] = a[0] * scale1 + b[0] * scale2
+-    out[1] = a[1] * scale1 + b[1] * scale2
+-    out[2] = a[2] * scale1 + b[2] * scale2
+-}
+-},{"./normalize":33,"gl-mat4/clone":137,"gl-mat4/create":138,"gl-mat4/determinant":139,"gl-mat4/invert":143,"gl-mat4/transpose":153,"gl-vec3/cross":24,"gl-vec3/dot":25,"gl-vec3/length":26,"gl-vec3/normalize":28}],33:[function(require,module,exports){
+-module.exports = function normalize(out, mat) {
+-    var m44 = mat[15]
+-    // Cannot normalize.
+-    if (m44 === 0) 
+-        return false
+-    var scale = 1 / m44
+-    for (var i=0; i<16; i++)
+-        out[i] = mat[i] * scale
+-    return true
++function ok(value, message) {
++  if (!value) fail(value, true, message, '==', assert.ok);
+ }
+-},{}],34:[function(require,module,exports){
+-/*
+-Input:  translation ; a 3 component vector
+-        scale       ; a 3 component vector
+-        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
+-        perspective ; a 4 component vector
+-        quaternion  ; a 4 component vector
+-Output: matrix      ; a 4x4 matrix
++assert.ok = ok;
+ 
+-From: http://www.w3.org/TR/css3-transforms/#recomposing-to-a-3d-matrix
+-*/
++// 5. The equality assertion tests shallow, coercive equality with
++// ==.
++// assert.equal(actual, expected, message_opt);
+ 
+-var mat4 = {
+-    identity: require('gl-mat4/identity'),
+-    translate: require('gl-mat4/translate'),
+-    multiply: require('gl-mat4/multiply'),
+-    create: require('gl-mat4/create'),
+-    scale: require('gl-mat4/scale'),
+-    fromRotationTranslation: require('gl-mat4/fromRotationTranslation')
+-}
++assert.equal = function equal(actual, expected, message) {
++  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
++};
+ 
+-var rotationMatrix = mat4.create()
+-var temp = mat4.create()
++// 6. The non-equality assertion tests for whether two objects are not equal
++// with != assert.notEqual(actual, expected, message_opt);
+ 
+-module.exports = function recomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
+-    mat4.identity(matrix)
++assert.notEqual = function notEqual(actual, expected, message) {
++  if (actual == expected) {
++    fail(actual, expected, message, '!=', assert.notEqual);
++  }
++};
+ 
+-    //apply translation & rotation
+-    mat4.fromRotationTranslation(matrix, quaternion, translation)
++// 7. The equivalence assertion tests a deep equality relation.
++// assert.deepEqual(actual, expected, message_opt);
+ 
+-    //apply perspective
+-    matrix[3] = perspective[0]
+-    matrix[7] = perspective[1]
+-    matrix[11] = perspective[2]
+-    matrix[15] = perspective[3]
+-        
+-    // apply skew
+-    // temp is a identity 4x4 matrix initially
+-    mat4.identity(temp)
++assert.deepEqual = function deepEqual(actual, expected, message) {
++  if (!_deepEqual(actual, expected)) {
++    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
++  }
++};
+ 
+-    if (skew[2] !== 0) {
+-        temp[9] = skew[2]
+-        mat4.multiply(matrix, matrix, temp)
+-    }
++function _deepEqual(actual, expected) {
++  // 7.1. All identical values are equivalent, as determined by ===.
++  if (actual === expected) {
++    return true;
+ 
+-    if (skew[1] !== 0) {
+-        temp[9] = 0
+-        temp[8] = skew[1]
+-        mat4.multiply(matrix, matrix, temp)
+-    }
++  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
++    if (actual.length != expected.length) return false;
+ 
+-    if (skew[0] !== 0) {
+-        temp[8] = 0
+-        temp[4] = skew[0]
+-        mat4.multiply(matrix, matrix, temp)
++    for (var i = 0; i < actual.length; i++) {
++      if (actual[i] !== expected[i]) return false;
+     }
+ 
+-    //apply scale
+-    mat4.scale(matrix, matrix, scale)
+-    return matrix
+-}
+-},{"gl-mat4/create":138,"gl-mat4/fromRotationTranslation":141,"gl-mat4/identity":142,"gl-mat4/multiply":145,"gl-mat4/scale":151,"gl-mat4/translate":152}],35:[function(require,module,exports){
+-module.exports = require('gl-quat/slerp')
+-},{"gl-quat/slerp":36}],36:[function(require,module,exports){
+-module.exports = slerp
+-
+-/**
+- * Performs a spherical linear interpolation between two quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {quat} out
+- */
+-function slerp (out, a, b, t) {
+-  // benchmarks:
+-  //    http://jsperf.com/quaternion-slerp-implementations
++    return true;
+ 
+-  var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-    bx = b[0], by = b[1], bz = b[2], bw = b[3]
++  // 7.2. If the expected value is a Date object, the actual value is
++  // equivalent if it is also a Date object that refers to the same time.
++  } else if (util.isDate(actual) && util.isDate(expected)) {
++    return actual.getTime() === expected.getTime();
+ 
+-  var omega, cosom, sinom, scale0, scale1
++  // 7.3 If the expected value is a RegExp object, the actual value is
++  // equivalent if it is also a RegExp object with the same source and
++  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
++  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
++    return actual.source === expected.source &&
++           actual.global === expected.global &&
++           actual.multiline === expected.multiline &&
++           actual.lastIndex === expected.lastIndex &&
++           actual.ignoreCase === expected.ignoreCase;
+ 
+-  // calc cosine
+-  cosom = ax * bx + ay * by + az * bz + aw * bw
+-  // adjust signs (if necessary)
+-  if (cosom < 0.0) {
+-    cosom = -cosom
+-    bx = -bx
+-    by = -by
+-    bz = -bz
+-    bw = -bw
+-  }
+-  // calculate coefficients
+-  if ((1.0 - cosom) > 0.000001) {
+-    // standard case (slerp)
+-    omega = Math.acos(cosom)
+-    sinom = Math.sin(omega)
+-    scale0 = Math.sin((1.0 - t) * omega) / sinom
+-    scale1 = Math.sin(t * omega) / sinom
++  // 7.4. Other pairs that do not both pass typeof value == 'object',
++  // equivalence is determined by ==.
++  } else if (!util.isObject(actual) && !util.isObject(expected)) {
++    return actual == expected;
++
++  // 7.5 For all other Object pairs, including Array objects, equivalence is
++  // determined by having the same number of owned properties (as verified
++  // with Object.prototype.hasOwnProperty.call), the same set of keys
++  // (although not necessarily the same order), equivalent values for every
++  // corresponding key, and an identical 'prototype' property. Note: this
++  // accounts for both named and indexed properties on Arrays.
+   } else {
+-    // "from" and "to" quaternions are very close
+-    //  ... so we can do a linear interpolation
+-    scale0 = 1.0 - t
+-    scale1 = t
++    return objEquiv(actual, expected);
+   }
+-  // calculate final values
+-  out[0] = scale0 * ax + scale1 * bx
+-  out[1] = scale0 * ay + scale1 * by
+-  out[2] = scale0 * az + scale1 * bz
+-  out[3] = scale0 * aw + scale1 * bw
+-
+-  return out
+ }
+ 
+-},{}],37:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = quatFromFrame
++function isArguments(object) {
++  return Object.prototype.toString.call(object) == '[object Arguments]';
++}
+ 
+-function quatFromFrame(
+-  out,
+-  rx, ry, rz,
+-  ux, uy, uz,
+-  fx, fy, fz) {
+-  var tr = rx + uy + fz
+-  if(l > 0) {
+-    var l = Math.sqrt(tr + 1.0)
+-    out[0] = 0.5 * (uz - fy) / l
+-    out[1] = 0.5 * (fx - rz) / l
+-    out[2] = 0.5 * (ry - uy) / l
+-    out[3] = 0.5 * l
+-  } else {
+-    var tf = Math.max(rx, uy, fz)
+-    var l = Math.sqrt(2 * tf - tr + 1.0)
+-    if(rx >= tf) {
+-      //x y z  order
+-      out[0] = 0.5 * l
+-      out[1] = 0.5 * (ux + ry) / l
+-      out[2] = 0.5 * (fx + rz) / l
+-      out[3] = 0.5 * (uz - fy) / l
+-    } else if(uy >= tf) {
+-      //y z x  order
+-      out[0] = 0.5 * (ry + ux) / l
+-      out[1] = 0.5 * l
+-      out[2] = 0.5 * (fy + uz) / l
+-      out[3] = 0.5 * (fx - rz) / l
+-    } else {
+-      //z x y  order
+-      out[0] = 0.5 * (rz + fx) / l
+-      out[1] = 0.5 * (uz + fy) / l
+-      out[2] = 0.5 * l
+-      out[3] = 0.5 * (ry - ux) / l
+-    }
++function objEquiv(a, b) {
++  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
++    return false;
++  // an identical 'prototype' property.
++  if (a.prototype !== b.prototype) return false;
++  // if one is a primitive, the other must be same
++  if (util.isPrimitive(a) || util.isPrimitive(b)) {
++    return a === b;
+   }
+-  return out
++  var aIsArgs = isArguments(a),
++      bIsArgs = isArguments(b);
++  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
++    return false;
++  if (aIsArgs) {
++    a = pSlice.call(a);
++    b = pSlice.call(b);
++    return _deepEqual(a, b);
++  }
++  var ka = objectKeys(a),
++      kb = objectKeys(b),
++      key, i;
++  // having the same number of owned properties (keys incorporates
++  // hasOwnProperty)
++  if (ka.length != kb.length)
++    return false;
++  //the same set of keys (although not necessarily the same order),
++  ka.sort();
++  kb.sort();
++  //~~~cheap key test
++  for (i = ka.length - 1; i >= 0; i--) {
++    if (ka[i] != kb[i])
++      return false;
++  }
++  //equivalent values for every corresponding key, and
++  //~~~possibly expensive deep test
++  for (i = ka.length - 1; i >= 0; i--) {
++    key = ka[i];
++    if (!_deepEqual(a[key], b[key])) return false;
++  }
++  return true;
+ }
+-},{}],38:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = createOrbitController
+ 
+-var filterVector  = require('filtered-vector')
+-var lookAt        = require('gl-mat4/lookAt')
+-var mat4FromQuat  = require('gl-mat4/fromQuat')
+-var invert44      = require('gl-mat4/invert')
+-var quatFromFrame = require('./lib/quatFromFrame')
++// 8. The non-equivalence assertion tests for any deep inequality.
++// assert.notDeepEqual(actual, expected, message_opt);
+ 
+-function len3(x,y,z) {
+-  return Math.sqrt(Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
+-}
++assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
++  if (_deepEqual(actual, expected)) {
++    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
++  }
++};
+ 
+-function len4(w,x,y,z) {
+-  return Math.sqrt(Math.pow(w,2) + Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
+-}
++// 9. The strict equality assertion tests strict equality, as determined by ===.
++// assert.strictEqual(actual, expected, message_opt);
+ 
+-function normalize4(out, a) {
+-  var ax = a[0]
+-  var ay = a[1]
+-  var az = a[2]
+-  var aw = a[3]
+-  var al = len4(ax, ay, az, aw)
+-  if(al > 1e-6) {
+-    out[0] = ax/al
+-    out[1] = ay/al
+-    out[2] = az/al
+-    out[3] = aw/al
+-  } else {
+-    out[0] = out[1] = out[2] = 0.0
+-    out[3] = 1.0
++assert.strictEqual = function strictEqual(actual, expected, message) {
++  if (actual !== expected) {
++    fail(actual, expected, message, '===', assert.strictEqual);
+   }
+-}
++};
+ 
+-function OrbitCameraController(initQuat, initCenter, initRadius) {
+-  this.radius    = filterVector([initRadius])
+-  this.center    = filterVector(initCenter)
+-  this.rotation  = filterVector(initQuat)
++// 10. The strict non-equality assertion tests for strict inequality, as
++// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);
+ 
+-  this.computedRadius   = this.radius.curve(0)
+-  this.computedCenter   = this.center.curve(0)
+-  this.computedRotation = this.rotation.curve(0)
+-  this.computedUp       = [0.1,0,0]
+-  this.computedEye      = [0.1,0,0]
+-  this.computedMatrix   = [0.1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
++assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
++  if (actual === expected) {
++    fail(actual, expected, message, '!==', assert.notStrictEqual);
++  }
++};
+ 
+-  this.recalcMatrix(0)
+-}
++function expectedException(actual, expected) {
++  if (!actual || !expected) {
++    return false;
++  }
+ 
+-var proto = OrbitCameraController.prototype
++  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
++    return expected.test(actual);
++  } else if (actual instanceof expected) {
++    return true;
++  } else if (expected.call({}, actual) === true) {
++    return true;
++  }
+ 
+-proto.lastT = function() {
+-  return Math.max(
+-    this.radius.lastT(),
+-    this.center.lastT(),
+-    this.rotation.lastT())
++  return false;
+ }
+ 
+-proto.recalcMatrix = function(t) {
+-  this.radius.curve(t)
+-  this.center.curve(t)
+-  this.rotation.curve(t)
+-
+-  var quat = this.computedRotation
+-  normalize4(quat, quat)
++function _throws(shouldThrow, block, expected, message) {
++  var actual;
+ 
+-  var mat = this.computedMatrix
+-  mat4FromQuat(mat, quat)
++  if (util.isString(expected)) {
++    message = expected;
++    expected = null;
++  }
+ 
+-  var center = this.computedCenter
+-  var eye    = this.computedEye
+-  var up     = this.computedUp
+-  var radius = Math.exp(this.computedRadius[0])
++  try {
++    block();
++  } catch (e) {
++    actual = e;
++  }
+ 
+-  eye[0] = center[0] + radius * mat[2]
+-  eye[1] = center[1] + radius * mat[6]
+-  eye[2] = center[2] + radius * mat[10]
+-  up[0] = mat[1]
+-  up[1] = mat[5]
+-  up[2] = mat[9]
++  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
++            (message ? ' ' + message : '.');
+ 
+-  for(var i=0; i<3; ++i) {
+-    var rr = 0.0
+-    for(var j=0; j<3; ++j) {
+-      rr += mat[i+4*j] * eye[j]
+-    }
+-    mat[12+i] = -rr
++  if (shouldThrow && !actual) {
++    fail(actual, expected, 'Missing expected exception' + message);
+   }
+-}
+ 
+-proto.getMatrix = function(t, result) {
+-  this.recalcMatrix(t)
+-  var m = this.computedMatrix
+-  if(result) {
+-    for(var i=0; i<16; ++i) {
+-      result[i] = m[i]
+-    }
+-    return result
++  if (!shouldThrow && expectedException(actual, expected)) {
++    fail(actual, expected, 'Got unwanted exception' + message);
+   }
+-  return m
+-}
+-
+-proto.idle = function(t) {
+-  this.center.idle(t)
+-  this.radius.idle(t)
+-  this.rotation.idle(t)
+-}
+ 
+-proto.flush = function(t) {
+-  this.center.flush(t)
+-  this.radius.flush(t)
+-  this.rotation.flush(t)
++  if ((shouldThrow && actual && expected &&
++      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
++    throw actual;
++  }
+ }
+ 
+-proto.pan = function(t, dx, dy, dz) {
+-  dx = dx || 0.0
+-  dy = dy || 0.0
+-  dz = dz || 0.0
+-
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
+-
+-  var ux = mat[1]
+-  var uy = mat[5]
+-  var uz = mat[9]
+-  var ul = len3(ux, uy, uz)
+-  ux /= ul
+-  uy /= ul
+-  uz /= ul
++// 11. Expected to throw an error:
++// assert.throws(block, Error_opt, message_opt);
+ 
+-  var rx = mat[0]
+-  var ry = mat[4]
+-  var rz = mat[8]
+-  var ru = rx * ux + ry * uy + rz * uz
+-  rx -= ux * ru
+-  ry -= uy * ru
+-  rz -= uz * ru
+-  var rl = len3(rx, ry, rz)
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
++assert.throws = function(block, /*optional*/error, /*optional*/message) {
++  _throws.apply(this, [true].concat(pSlice.call(arguments)));
++};
+ 
+-  var fx = mat[2]
+-  var fy = mat[6]
+-  var fz = mat[10]
+-  var fu = fx * ux + fy * uy + fz * uz
+-  var fr = fx * rx + fy * ry + fz * rz
+-  fx -= fu * ux + fr * rx
+-  fy -= fu * uy + fr * ry
+-  fz -= fu * uz + fr * rz
+-  var fl = len3(fx, fy, fz)
+-  fx /= fl
+-  fy /= fl
+-  fz /= fl
++// EXTENSION! This is annoying to write outside this module.
++assert.doesNotThrow = function(block, /*optional*/message) {
++  _throws.apply(this, [false].concat(pSlice.call(arguments)));
++};
+ 
+-  var vx = rx * dx + ux * dy
+-  var vy = ry * dx + uy * dy
+-  var vz = rz * dx + uz * dy
++assert.ifError = function(err) { if (err) {throw err;}};
+ 
+-  this.center.move(t, vx, vy, vz)
++var objectKeys = Object.keys || function (obj) {
++  var keys = [];
++  for (var key in obj) {
++    if (hasOwn.call(obj, key)) keys.push(key);
++  }
++  return keys;
++};
+ 
+-  //Update z-component of radius
+-  var radius = Math.exp(this.computedRadius[0])
+-  radius = Math.max(1e-4, radius + dz)
+-  this.radius.set(t, Math.log(radius))
++},{"util/":455}],30:[function(require,module,exports){
++module.exports = function _atob(str) {
++  return atob(str)
+ }
+ 
+-proto.rotate = function(t, dx, dy, dz) {
+-  this.recalcMatrix(t)
+-
+-  dx = dx||0.0
+-  dy = dy||0.0
+-
+-  var mat = this.computedMatrix
+-
+-  var rx = mat[0]
+-  var ry = mat[4]
+-  var rz = mat[8]
++},{}],31:[function(require,module,exports){
++'use strict'
+ 
+-  var ux = mat[1]
+-  var uy = mat[5]
+-  var uz = mat[9]
++module.exports = barycentric
+ 
+-  var fx = mat[2]
+-  var fy = mat[6]
+-  var fz = mat[10]
++var solve = require('robust-linear-solve')
+ 
+-  var qx = dx * rx + dy * ux
+-  var qy = dx * ry + dy * uy
+-  var qz = dx * rz + dy * uz
++function reduce(x) {
++  var r = 0
++  for(var i=0; i<x.length; ++i) {
++    r += x[i]
++  }
++  return r
++}
+ 
+-  var bx = -(fy * qz - fz * qy)
+-  var by = -(fz * qx - fx * qz)
+-  var bz = -(fx * qy - fy * qx)  
+-  var bw = Math.sqrt(Math.max(0.0, 1.0 - Math.pow(bx,2) - Math.pow(by,2) - Math.pow(bz,2)))
+-  var bl = len4(bx, by, bz, bw)
+-  if(bl > 1e-6) {
+-    bx /= bl
+-    by /= bl
+-    bz /= bl
+-    bw /= bl
+-  } else {
+-    bx = by = bz = 0.0
+-    bw = 1.0
++function barycentric(simplex, point) {
++  var d = point.length
++  var A = new Array(d+1)
++  for(var i=0; i<d; ++i) {
++    var row = new Array(d+1)
++    for(var j=0; j<=d; ++j) {
++      row[j] = simplex[j][i]
++    }
++    A[i] = row
++  }
++  A[d] = new Array(d+1)
++  for(var i=0; i<=d; ++i) {
++    A[d][i] = 1
+   }
+ 
+-  var rotation = this.computedRotation
+-  var ax = rotation[0]
+-  var ay = rotation[1]
+-  var az = rotation[2]
+-  var aw = rotation[3]
++  var b = new Array(d+1)
++  for(var i=0; i<d; ++i) {
++    b[i] = point[i]
++  }
++  b[d] = 1.0
+ 
+-  var cx = ax*bw + aw*bx + ay*bz - az*by
+-  var cy = ay*bw + aw*by + az*bx - ax*bz
+-  var cz = az*bw + aw*bz + ax*by - ay*bx
+-  var cw = aw*bw - ax*bx - ay*by - az*bz
++  var x = solve(A, b)
++  var w = reduce(x[d+1])
+   
+-  //Apply roll
+-  if(dz) {
+-    bx = fx
+-    by = fy
+-    bz = fz
+-    var s = Math.sin(dz) / len3(bx, by, bz)
+-    bx *= s
+-    by *= s
+-    bz *= s
+-    bw = Math.cos(dx)
+-    cx = cx*bw + cw*bx + cy*bz - cz*by
+-    cy = cy*bw + cw*by + cz*bx - cx*bz
+-    cz = cz*bw + cw*bz + cx*by - cy*bx
+-    cw = cw*bw - cx*bx - cy*by - cz*bz
++  if(w === 0) {
++    w = 1.0
+   }
+-
+-  var cl = len4(cx, cy, cz, cw)
+-  if(cl > 1e-6) {
+-    cx /= cl
+-    cy /= cl
+-    cz /= cl
+-    cw /= cl
+-  } else {
+-    cx = cy = cz = 0.0
+-    cw = 1.0
++  var y = new Array(d+1)
++  for(var i=0; i<=d; ++i) {
++    y[i] = reduce(x[i]) / w
+   }
+-
+-  this.rotation.set(t, cx, cy, cz, cw)
++  return y
+ }
++},{"robust-linear-solve":417}],32:[function(require,module,exports){
++'use strict'
+ 
+-proto.lookAt = function(t, eye, center, up) {
+-  this.recalcMatrix(t)
++var rationalize = require('./lib/rationalize')
+ 
+-  center = center || this.computedCenter
+-  eye    = eye    || this.computedEye
+-  up     = up     || this.computedUp
++module.exports = add
+ 
+-  var mat = this.computedMatrix
+-  lookAt(mat, eye, center, up)
++function add(a, b) {
++  return rationalize(
++    a[0].mul(b[1]).add(b[0].mul(a[1])),
++    a[1].mul(b[1]))
++}
+ 
+-  var rotation = this.computedRotation
+-  quatFromFrame(rotation,
+-    mat[0], mat[1], mat[2],
+-    mat[4], mat[5], mat[6],
+-    mat[8], mat[9], mat[10])
+-  normalize4(rotation, rotation)
+-  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
++},{"./lib/rationalize":42}],33:[function(require,module,exports){
++'use strict'
+ 
+-  var fl = 0.0
+-  for(var i=0; i<3; ++i) {
+-    fl += Math.pow(center[i] - eye[i], 2)
+-  }
+-  this.radius.set(t, 0.5 * Math.log(Math.max(fl, 1e-6)))
++module.exports = cmp
+ 
+-  this.center.set(t, center[0], center[1], center[2])
++function cmp(a, b) {
++    return a[0].mul(b[1]).cmp(b[0].mul(a[1]))
+ }
+ 
+-proto.translate = function(t, dx, dy, dz) {
+-  this.center.move(t,
+-    dx||0.0,
+-    dy||0.0,
+-    dz||0.0)
+-}
++},{}],34:[function(require,module,exports){
++'use strict'
+ 
+-proto.setMatrix = function(t, matrix) {
++var rationalize = require('./lib/rationalize')
+ 
+-  var rotation = this.computedRotation
+-  quatFromFrame(rotation,
+-    matrix[0], matrix[1], matrix[2],
+-    matrix[4], matrix[5], matrix[6],
+-    matrix[8], matrix[9], matrix[10])
+-  normalize4(rotation, rotation)
+-  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
++module.exports = div
+ 
+-  var mat = this.computedMatrix
+-  invert44(mat, matrix)
+-  var w = mat[15]
+-  if(Math.abs(w) > 1e-6) {
+-    var cx = mat[12]/w
+-    var cy = mat[13]/w
+-    var cz = mat[14]/w
++function div(a, b) {
++  return rationalize(a[0].mul(b[1]), a[1].mul(b[0]))
++}
+ 
+-    this.recalcMatrix(t)  
+-    var r = Math.exp(this.computedRadius[0])
+-    this.center.set(t, cx-mat[2]*r, cy-mat[6]*r, cz-mat[10]*r)
+-    this.radius.idle(t)
+-  } else {
+-    this.center.idle(t)
+-    this.radius.idle(t)
+-  }
+-}
++},{"./lib/rationalize":42}],35:[function(require,module,exports){
++'use strict'
+ 
+-proto.setDistance = function(t, d) {
+-  if(d > 0) {
+-    this.radius.set(t, Math.log(d))
+-  }
+-}
++var isRat = require('./is-rat')
++var isBN = require('./lib/is-bn')
++var num2bn = require('./lib/num-to-bn')
++var str2bn = require('./lib/str-to-bn')
++var rationalize = require('./lib/rationalize')
++var div = require('./div')
+ 
+-proto.setDistanceLimits = function(lo, hi) {
+-  if(lo > 0) {
+-    lo = Math.log(lo)
++module.exports = makeRational
++
++function makeRational(numer, denom) {
++  if(isRat(numer)) {
++    if(denom) {
++      return div(numer, makeRational(denom))
++    }
++    return [numer[0].clone(), numer[1].clone()]
++  }
++  var shift = 0
++  var a, b
++  if(isBN(numer)) {
++    a = numer.clone()
++  } else if(typeof numer === 'string') {
++    a = str2bn(numer)
++  } else if(numer === 0) {
++    return [num2bn(0), num2bn(1)]
++  } else if(numer === Math.floor(numer)) {
++    a = num2bn(numer)
+   } else {
+-    lo = -Infinity    
++    while(numer !== Math.floor(numer)) {
++      numer = numer * Math.pow(2, 256)
++      shift -= 256
++    }
++    a = num2bn(numer)
+   }
+-  if(hi > 0) {
+-    hi = Math.log(hi)
++  if(isRat(denom)) {
++    a.mul(denom[1])
++    b = denom[0].clone()
++  } else if(isBN(denom)) {
++    b = denom.clone()
++  } else if(typeof denom === 'string') {
++    b = str2bn(denom)
++  } else if(!denom) {
++    b = num2bn(1)
++  } else if(denom === Math.floor(denom)) {
++    b = num2bn(denom)
+   } else {
+-    hi = Infinity
++    while(denom !== Math.floor(denom)) {
++      denom = denom * Math.pow(2, 256)
++      shift += 256
++    }
++    b = num2bn(denom)
+   }
+-  hi = Math.max(hi, lo)
+-  this.radius.bounds[0][0] = lo
+-  this.radius.bounds[1][0] = hi
+-}
+-
+-proto.getDistanceLimits = function(out) {
+-  var bounds = this.radius.bounds
+-  if(out) {
+-    out[0] = Math.exp(bounds[0][0])
+-    out[1] = Math.exp(bounds[1][0])
+-    return out
++  if(shift > 0) {
++    a = a.shln(shift)
++  } else if(shift < 0) {
++    b = b.shln(-shift)
+   }
+-  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
++  return rationalize(a, b)
+ }
+ 
+-proto.toJSON = function() {
+-  this.recalcMatrix(this.lastT())
+-  return {
+-    center:   this.computedCenter.slice(),
+-    rotation: this.computedRotation.slice(),
+-    distance: Math.log(this.computedRadius[0]),
+-    zoomMin:  this.radius.bounds[0][0],
+-    zoomMax:  this.radius.bounds[1][0]
+-  }
+-}
++},{"./div":34,"./is-rat":36,"./lib/is-bn":40,"./lib/num-to-bn":41,"./lib/rationalize":42,"./lib/str-to-bn":43}],36:[function(require,module,exports){
++'use strict'
+ 
+-proto.fromJSON = function(options) {
+-  var t = this.lastT()
+-  var c = options.center
+-  if(c) {
+-    this.center.set(t, c[0], c[1], c[2])
+-  }
+-  var r = options.rotation
+-  if(r) {
+-    this.rotation.set(t, r[0], r[1], r[2], r[3])
+-  }
+-  var d = options.distance
+-  if(d && d > 0) {
+-    this.radius.set(t, Math.log(d))
+-  }
+-  this.setDistanceLimits(options.zoomMin, options.zoomMax)
+-}
++var isBN = require('./lib/is-bn')
+ 
+-function createOrbitController(options) {
+-  options = options || {}
+-  var center   = options.center   || [0,0,0]
+-  var rotation = options.rotation || [0,0,0,1]
+-  var radius   = options.radius   || 1.0
++module.exports = isRat
+ 
+-  center = [].slice.call(center, 0, 3)
+-  rotation = [].slice.call(rotation, 0, 4)
+-  normalize4(rotation, rotation)
++function isRat(x) {
++  return Array.isArray(x) && x.length === 2 && isBN(x[0]) && isBN(x[1])
++}
+ 
+-  var result = new OrbitCameraController(
+-    rotation,
+-    center,
+-    Math.log(radius))
++},{"./lib/is-bn":40}],37:[function(require,module,exports){
++'use strict'
+ 
+-  result.setDistanceLimits(options.zoomMin, options.zoomMax)
++var bn = require('bn.js')
+ 
+-  if('eye' in options || 'up' in options) {
+-    result.lookAt(0, options.eye, options.center, options.up)
+-  }
++module.exports = sign
+ 
+-  return result
++function sign(x) {
++  return x.cmp(new bn(0))
+ }
+-},{"./lib/quatFromFrame":37,"filtered-vector":21,"gl-mat4/fromQuat":140,"gl-mat4/invert":143,"gl-mat4/lookAt":144}],39:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = createTurntableController
++},{"bn.js":50}],38:[function(require,module,exports){
++'use strict'
+ 
+-var filterVector = require('filtered-vector')
+-var invert44     = require('gl-mat4/invert')
+-var rotateM      = require('gl-mat4/rotate')
+-var cross        = require('gl-vec3/cross')
+-var normalize3   = require('gl-vec3/normalize')
+-var dot3         = require('gl-vec3/dot')
++module.exports = bn2num
+ 
+-function len3(x, y, z) {
+-  return Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2) + Math.pow(z, 2))
++//TODO: Make this better
++function bn2num(b) {
++  var l = b.length
++  var words = b.words
++  var out = 0
++  if (l === 1) {
++    out = words[0]
++  } else if (l === 2) {
++    out = words[0] + (words[1] * 0x4000000)
++  } else {
++    var out = 0
++    for (var i = 0; i < l; i++) {
++      var w = words[i]
++      out += w * Math.pow(0x4000000, i)
++    }
++  }
++  return b.sign ? -out : out
+ }
+ 
+-function clamp1(x) {
+-  return Math.min(1.0, Math.max(-1.0, x))
+-}
++},{}],39:[function(require,module,exports){
++'use strict'
+ 
+-function findOrthoPair(v) {
+-  var vx = Math.abs(v[0])
+-  var vy = Math.abs(v[1])
+-  var vz = Math.abs(v[2])
++var db = require('double-bits')
++var ctz = require('bit-twiddle').countTrailingZeros
+ 
+-  var u = [0,0,0]
+-  if(vx > Math.max(vy, vz)) {
+-    u[2] = 1
+-  } else if(vy > Math.max(vx, vz)) {
+-    u[0] = 1
+-  } else {
+-    u[1] = 1
+-  }
++module.exports = ctzNumber
+ 
+-  var vv = 0
+-  var uv = 0
+-  for(var i=0; i<3; ++i ) {
+-    vv += v[i] * v[i]
+-    uv += u[i] * v[i]
++//Counts the number of trailing zeros
++function ctzNumber(x) {
++  var l = ctz(db.lo(x))
++  if(l < 32) {
++    return l
+   }
+-  for(var i=0; i<3; ++i) {
+-    u[i] -= (uv / vv) *  v[i]
++  var h = ctz(db.hi(x))
++  if(h > 20) {
++    return 52
+   }
+-  normalize3(u, u)
+-  return u
++  return h + 32
+ }
+ 
+-function TurntableController(zoomMin, zoomMax, center, up, right, radius, theta, phi) {
+-  this.center = filterVector(center)
+-  this.up     = filterVector(up)
+-  this.right  = filterVector(right)
+-  this.radius = filterVector([radius])
+-  this.angle  = filterVector([theta, phi])
+-  this.angle.bounds = [[-Infinity,-Math.PI/2], [Infinity,Math.PI/2]]
+-  this.setDistanceLimits(zoomMin, zoomMax)
++},{"bit-twiddle":49,"double-bits":92}],40:[function(require,module,exports){
++'use strict'
+ 
+-  this.computedCenter = this.center.curve(0)
+-  this.computedUp     = this.up.curve(0)
+-  this.computedRight  = this.right.curve(0)
+-  this.computedRadius = this.radius.curve(0)
+-  this.computedAngle  = this.angle.curve(0)
+-  this.computedToward = [0,0,0]
+-  this.computedEye    = [0,0,0]
+-  this.computedMatrix = new Array(16)
+-  for(var i=0; i<16; ++i) {
+-    this.computedMatrix[i] = 0.5
+-  }
++var BN = require('bn.js')
+ 
+-  this.recalcMatrix(0)
++module.exports = isBN
++
++//Test if x is a bignumber
++//FIXME: obviously this is the wrong way to do it
++function isBN(x) {
++  return x && typeof x === 'object' && Boolean(x.words)
+ }
+ 
+-var proto = TurntableController.prototype
++},{"bn.js":50}],41:[function(require,module,exports){
++'use strict'
+ 
+-proto.setDistanceLimits = function(minDist, maxDist) {
+-  if(minDist > 0) {
+-    minDist = Math.log(minDist)
+-  } else {
+-    minDist = -Infinity
+-  }
+-  if(maxDist > 0) {
+-    maxDist = Math.log(maxDist)
++var BN = require('bn.js')
++var db = require('double-bits')
++
++module.exports = num2bn
++
++function num2bn(x) {
++  var e = db.exponent(x)
++  if(e < 52) {
++    return new BN(x)
+   } else {
+-    maxDist = Infinity
++    return (new BN(x * Math.pow(2, 52-e))).shln(e-52)
+   }
+-  maxDist = Math.max(maxDist, minDist)
+-  this.radius.bounds[0][0] = minDist
+-  this.radius.bounds[1][0] = maxDist
+ }
+ 
+-proto.getDistanceLimits = function(out) {
+-  var bounds = this.radius.bounds[0]
+-  if(out) {
+-    out[0] = Math.exp(bounds[0][0])
+-    out[1] = Math.exp(bounds[1][0])
+-    return out
+-  }
+-  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
+-}
++},{"bn.js":50,"double-bits":92}],42:[function(require,module,exports){
++'use strict'
+ 
+-proto.recalcMatrix = function(t) {
+-  //Recompute curves
+-  this.center.curve(t)
+-  this.up.curve(t)
+-  this.right.curve(t)
+-  this.radius.curve(t)
+-  this.angle.curve(t)
++var num2bn = require('./num-to-bn')
++var sign = require('./bn-sign')
+ 
+-  //Compute frame for camera matrix
+-  var up     = this.computedUp
+-  var right  = this.computedRight
+-  var uu = 0.0
+-  var ur = 0.0
+-  for(var i=0; i<3; ++i) {
+-    ur += up[i] * right[i]
+-    uu += up[i] * up[i]
++module.exports = rationalize
++
++function rationalize(numer, denom) {
++  var snumer = sign(numer)
++  var sdenom = sign(denom)
++  if(snumer === 0) {
++    return [num2bn(0), num2bn(1)]
+   }
+-  var ul = Math.sqrt(uu)
+-  var rr = 0.0
+-  for(var i=0; i<3; ++i) {
+-    right[i] -= up[i] * ur / uu
+-    rr       += right[i] * right[i]
+-    up[i]    /= ul
++  if(sdenom === 0) {
++    return [num2bn(0), num2bn(0)]
+   }
+-  var rl = Math.sqrt(rr)
+-  for(var i=0; i<3; ++i) {
+-    right[i] /= rl
++  if(sdenom < 0) {
++    numer = numer.neg()
++    denom = denom.neg()
+   }
++  var d = numer.gcd(denom)
++  if(d.cmpn(1)) {
++    return [ numer.div(d), denom.div(d) ]
++  }
++  return [ numer, denom ]
++}
+ 
+-  //Compute toward vector
+-  var toward = this.computedToward
+-  cross(toward, up, right)
+-  normalize3(toward, toward)
+-
+-  //Compute angular parameters
+-  var radius = Math.exp(this.computedRadius[0])
+-  var theta  = this.computedAngle[0]
+-  var phi    = this.computedAngle[1]
+-
+-  var ctheta = Math.cos(theta)
+-  var stheta = Math.sin(theta)
+-  var cphi   = Math.cos(phi)
+-  var sphi   = Math.sin(phi)
+-
+-  var center = this.computedCenter
++},{"./bn-sign":37,"./num-to-bn":41}],43:[function(require,module,exports){
++'use strict'
+ 
+-  var wx = ctheta * cphi 
+-  var wy = stheta * cphi
+-  var wz = sphi
++var BN = require('bn.js')
+ 
+-  var sx = -ctheta * sphi
+-  var sy = -stheta * sphi
+-  var sz = cphi
++module.exports = str2BN
+ 
+-  var eye = this.computedEye
+-  var mat = this.computedMatrix
+-  for(var i=0; i<3; ++i) {
+-    var x      = wx * right[i] + wy * toward[i] + wz * up[i]
+-    mat[4*i+1] = sx * right[i] + sy * toward[i] + sz * up[i]
+-    mat[4*i+2] = x
+-    mat[4*i+3] = 0.0
+-  }
++function str2BN(x) {
++  return new BN(x)
++}
+ 
+-  var ax = mat[1]
+-  var ay = mat[5]
+-  var az = mat[9]
+-  var bx = mat[2]
+-  var by = mat[6]
+-  var bz = mat[10]
+-  var cx = ay * bz - az * by
+-  var cy = az * bx - ax * bz
+-  var cz = ax * by - ay * bx
+-  var cl = len3(cx, cy, cz)
+-  cx /= cl
+-  cy /= cl
+-  cz /= cl
+-  mat[0] = cx
+-  mat[4] = cy
+-  mat[8] = cz
++},{"bn.js":50}],44:[function(require,module,exports){
++'use strict'
+ 
+-  for(var i=0; i<3; ++i) {
+-    eye[i] = center[i] + mat[2+4*i]*radius
+-  }
++var rationalize = require('./lib/rationalize')
+ 
+-  for(var i=0; i<3; ++i) {
+-    var rr = 0.0
+-    for(var j=0; j<3; ++j) {
+-      rr += mat[i+4*j] * eye[j]
+-    }
+-    mat[12+i] = -rr
+-  }
+-  mat[15] = 1.0
+-}
++module.exports = mul
+ 
+-proto.getMatrix = function(t, result) {
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
+-  if(result) {
+-    for(var i=0; i<16; ++i) {
+-      result[i] = mat[i]
+-    }
+-    return result
+-  }
+-  return mat
++function mul(a, b) {
++  return rationalize(a[0].mul(b[0]), a[1].mul(b[1]))
+ }
+ 
+-var zAxis = [0,0,0]
+-proto.rotate = function(t, dtheta, dphi, droll) {
+-  this.angle.move(t, dtheta, dphi)
+-  if(droll) {
+-    this.recalcMatrix(t)
+-
+-    var mat = this.computedMatrix
+-    zAxis[0] = mat[2]
+-    zAxis[1] = mat[6]
+-    zAxis[2] = mat[10]
++},{"./lib/rationalize":42}],45:[function(require,module,exports){
++'use strict'
+ 
+-    var up     = this.computedUp
+-    var right  = this.computedRight
+-    var toward = this.computedToward
++var bnsign = require('./lib/bn-sign')
+ 
+-    for(var i=0; i<3; ++i) {
+-      mat[4*i]   = up[i]
+-      mat[4*i+1] = right[i]
+-      mat[4*i+2] = toward[i]
+-    }
+-    rotateM(mat, mat, droll, zAxis)
+-    for(var i=0; i<3; ++i) {
+-      up[i] =    mat[4*i]
+-      right[i] = mat[4*i+1]
+-    }
++module.exports = sign
+ 
+-    this.up.set(t, up[0], up[1], up[2])
+-    this.right.set(t, right[0], right[1], right[2])
+-  }
++function sign(x) {
++  return bnsign(x[0]) * bnsign(x[1])
+ }
+ 
+-proto.pan = function(t, dx, dy, dz) {
+-  dx = dx || 0.0
+-  dy = dy || 0.0
+-  dz = dz || 0.0
+-
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
++},{"./lib/bn-sign":37}],46:[function(require,module,exports){
++'use strict'
+ 
+-  var dist = Math.exp(this.computedRadius[0])
++var rationalize = require('./lib/rationalize')
+ 
+-  var ux = mat[1]
+-  var uy = mat[5]
+-  var uz = mat[9]
+-  var ul = len3(ux, uy, uz)
+-  ux /= ul
+-  uy /= ul
+-  uz /= ul
++module.exports = sub
+ 
+-  var rx = mat[0]
+-  var ry = mat[4]
+-  var rz = mat[8]
+-  var ru = rx * ux + ry * uy + rz * uz
+-  rx -= ux * ru
+-  ry -= uy * ru
+-  rz -= uz * ru
+-  var rl = len3(rx, ry, rz)
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
++function sub(a, b) {
++  return rationalize(a[0].mul(b[1]).sub(a[1].mul(b[0])), a[1].mul(b[1]))
++}
+ 
+-  var vx = rx * dx + ux * dy
+-  var vy = ry * dx + uy * dy
+-  var vz = rz * dx + uz * dy
+-  this.center.move(t, vx, vy, vz)
++},{"./lib/rationalize":42}],47:[function(require,module,exports){
++'use strict'
+ 
+-  //Update z-component of radius
+-  var radius = Math.exp(this.computedRadius[0])
+-  radius = Math.max(1e-4, radius + dz)
+-  this.radius.set(t, Math.log(radius))
+-}
++var bn2num = require('./lib/bn-to-num')
++var ctz = require('./lib/ctz')
+ 
+-proto.translate = function(t, dx, dy, dz) {
+-  this.center.move(t,
+-    dx||0.0,
+-    dy||0.0,
+-    dz||0.0)
+-}
++module.exports = roundRat
+ 
+-//Recenters the coordinate axes
+-proto.setMatrix = function(t, mat, axes, noSnap) {
+-  
+-  //Get the axes for tare
+-  var ushift = 1
+-  if(typeof axes === 'number') {
+-    ushift = (axes)|0
+-  } 
+-  if(ushift < 0 || ushift > 3) {
+-    ushift = 1
++//Round a rational to the closest float
++function roundRat(f) {
++  var a = f[0]
++  var b = f[1]
++  if(a.cmpn(0) === 0) {
++    return 0
+   }
+-  var vshift = (ushift + 2) % 3
+-  var fshift = (ushift + 1) % 3
+-
+-  //Recompute state for new t value
+-  if(!mat) { 
+-    this.recalcMatrix(t)
+-    mat = this.computedMatrix
++  var h = a.divmod(b)
++  var iv = h.div
++  var x = bn2num(iv)
++  var ir = h.mod
++  if(ir.cmpn(0) === 0) {
++    return x
+   }
++  if(x) {
++    var s = ctz(x) + 4
++    var y = bn2num(ir.shln(s).divRound(b))
+ 
+-  //Get right and up vectors
+-  var ux = mat[ushift]
+-  var uy = mat[ushift+4]
+-  var uz = mat[ushift+8]
+-  if(!noSnap) {
+-    var ul = len3(ux, uy, uz)
+-    ux /= ul
+-    uy /= ul
+-    uz /= ul
++    // flip the sign of y if x is negative
++    if (x<0) {
++      y = -y;
++    }
++
++    return x + y * Math.pow(2, -s)
+   } else {
+-    var ax = Math.abs(ux)
+-    var ay = Math.abs(uy)
+-    var az = Math.abs(uz)
+-    var am = Math.max(ax,ay,az)
+-    if(ax === am) {
+-      ux = (ux < 0) ? -1 : 1
+-      uy = uz = 0
+-    } else if(az === am) {
+-      uz = (uz < 0) ? -1 : 1
+-      ux = uy = 0
+-    } else {
+-      uy = (uy < 0) ? -1 : 1
+-      ux = uz = 0
++    var ybits = b.bitLength() - ir.bitLength() + 53
++    var y = bn2num(ir.shln(ybits).divRound(b))
++    if(ybits < 1023) {
++      return y * Math.pow(2, -ybits)
+     }
++    y *= Math.pow(2, -1023)
++    return y * Math.pow(2, 1023-ybits)
+   }
++}
+ 
+-  var rx = mat[vshift]
+-  var ry = mat[vshift+4]
+-  var rz = mat[vshift+8]
+-  var ru = rx * ux + ry * uy + rz * uz
+-  rx -= ux * ru
+-  ry -= uy * ru
+-  rz -= uz * ru
+-  var rl = len3(rx, ry, rz)
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
+-  
+-  var fx = uy * rz - uz * ry
+-  var fy = uz * rx - ux * rz
+-  var fz = ux * ry - uy * rx
+-  var fl = len3(fx, fy, fz)
+-  fx /= fl
+-  fy /= fl
+-  fz /= fl
+-
+-  this.center.jump(t, ex, ey, ez)
+-  this.radius.idle(t)
+-  this.up.jump(t, ux, uy, uz)
+-  this.right.jump(t, rx, ry, rz)
++},{"./lib/bn-to-num":38,"./lib/ctz":39}],48:[function(require,module,exports){
++"use strict"
+ 
+-  var phi, theta
+-  if(ushift === 2) {
+-    var cx = mat[1]
+-    var cy = mat[5]
+-    var cz = mat[9]
+-    var cr = cx * rx + cy * ry + cz * rz
+-    var cf = cx * fx + cy * fy + cz * fz
+-    if(tu < 0) {
+-      phi = -Math.PI/2
++function compileSearch(funcName, predicate, reversed, extraArgs, useNdarray, earlyOut) {
++  var code = [
++    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
++earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
++";while(l<=h){\
++var m=(l+h)>>>1,x=a", useNdarray ? ".get(m)" : "[m]"]
++  if(earlyOut) {
++    if(predicate.indexOf("c") < 0) {
++      code.push(";if(x===y){return m}else if(x<=y){")
+     } else {
+-      phi = Math.PI/2
++      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
+     }
+-    theta = Math.atan2(cf, cr)
+   } else {
+-    var tx = mat[2]
+-    var ty = mat[6]
+-    var tz = mat[10]
+-    var tu = tx * ux + ty * uy + tz * uz
+-    var tr = tx * rx + ty * ry + tz * rz
+-    var tf = tx * fx + ty * fy + tz * fz
+-
+-    phi = Math.asin(clamp1(tu))
+-    theta = Math.atan2(tf, tr)
++    code.push(";if(", predicate, "){i=m;")
++  }
++  if(reversed) {
++    code.push("l=m+1}else{h=m-1}")
++  } else {
++    code.push("h=m-1}else{l=m+1}")
++  }
++  code.push("}")
++  if(earlyOut) {
++    code.push("return -1};")
++  } else {
++    code.push("return i};")
+   }
++  return code.join("")
++}
+ 
+-  this.angle.jump(t, theta, phi)
++function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
++  var result = new Function([
++  compileSearch("A", "x" + predicate + "y", reversed, ["y"], false, earlyOut),
++  compileSearch("B", "x" + predicate + "y", reversed, ["y"], true, earlyOut),
++  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], false, earlyOut),
++  compileSearch("Q", "c(x,y)" + predicate + "0", reversed, ["y", "c"], true, earlyOut),
++"function dispatchBsearch", suffix, "(a,y,c,l,h){\
++if(a.shape){\
++if(typeof(c)==='function'){\
++return Q(a,(l===undefined)?0:l|0,(h===undefined)?a.shape[0]-1:h|0,y,c)\
++}else{\
++return B(a,(c===undefined)?0:c|0,(l===undefined)?a.shape[0]-1:l|0,y)\
++}}else{\
++if(typeof(c)==='function'){\
++return P(a,(l===undefined)?0:l|0,(h===undefined)?a.length-1:h|0,y,c)\
++}else{\
++return A(a,(c===undefined)?0:c|0,(l===undefined)?a.length-1:l|0,y)\
++}}}\
++return dispatchBsearch", suffix].join(""))
++  return result()
++}
+ 
+-  this.recalcMatrix(t)
+-  var dx = mat[2]
+-  var dy = mat[6]
+-  var dz = mat[10]
++module.exports = {
++  ge: compileBoundsSearch(">=", false, "GE"),
++  gt: compileBoundsSearch(">", false, "GT"),
++  lt: compileBoundsSearch("<", true, "LT"),
++  le: compileBoundsSearch("<=", true, "LE"),
++  eq: compileBoundsSearch("-", true, "EQ", true)
++}
+ 
+-  var imat = this.computedMatrix
+-  invert44(imat, mat)
+-  var w  = imat[15]
+-  var ex = imat[12] / w
+-  var ey = imat[13] / w
+-  var ez = imat[14] / w
++},{}],49:[function(require,module,exports){
++/**
++ * Bit twiddling hacks for JavaScript.
++ *
++ * Author: Mikola Lysenko
++ *
++ * Ported from Stanford bit twiddling hack library:
++ *    http://graphics.stanford.edu/~seander/bithacks.html
++ */
+ 
+-  var gs = Math.exp(this.computedRadius[0])
+-  this.center.jump(t, ex-dx*gs, ey-dy*gs, ez-dz*gs)
++"use strict"; "use restrict";
++
++//Number of bits in an integer
++var INT_BITS = 32;
++
++//Constants
++exports.INT_BITS  = INT_BITS;
++exports.INT_MAX   =  0x7fffffff;
++exports.INT_MIN   = -1<<(INT_BITS-1);
++
++//Returns -1, 0, +1 depending on sign of x
++exports.sign = function(v) {
++  return (v > 0) - (v < 0);
+ }
+ 
+-proto.lastT = function() {
+-  return Math.max(
+-    this.center.lastT(),
+-    this.up.lastT(),
+-    this.right.lastT(),
+-    this.radius.lastT(),
+-    this.angle.lastT())
++//Computes absolute value of integer
++exports.abs = function(v) {
++  var mask = v >> (INT_BITS-1);
++  return (v ^ mask) - mask;
+ }
+ 
+-proto.idle = function(t) {
+-  this.center.idle(t)
+-  this.up.idle(t)
+-  this.right.idle(t)
+-  this.radius.idle(t)
+-  this.angle.idle(t)
++//Computes minimum of integers x and y
++exports.min = function(x, y) {
++  return y ^ ((x ^ y) & -(x < y));
+ }
+ 
+-proto.flush = function(t) {
+-  this.center.flush(t)
+-  this.up.flush(t)
+-  this.right.flush(t)
+-  this.radius.flush(t)
+-  this.angle.flush(t)
++//Computes maximum of integers x and y
++exports.max = function(x, y) {
++  return x ^ ((x ^ y) & -(x < y));
+ }
+ 
+-proto.setDistance = function(t, d) {
+-  if(d > 0) {
+-    this.radius.set(t, Math.log(d))
+-  }
++//Checks if a number is a power of two
++exports.isPow2 = function(v) {
++  return !(v & (v-1)) && (!!v);
+ }
+ 
+-proto.lookAt = function(t, eye, center, up) {
+-  this.recalcMatrix(t)
++//Computes log base 2 of v
++exports.log2 = function(v) {
++  var r, shift;
++  r =     (v > 0xFFFF) << 4; v >>>= r;
++  shift = (v > 0xFF  ) << 3; v >>>= shift; r |= shift;
++  shift = (v > 0xF   ) << 2; v >>>= shift; r |= shift;
++  shift = (v > 0x3   ) << 1; v >>>= shift; r |= shift;
++  return r | (v >> 1);
++}
+ 
+-  eye    = eye    || this.computedEye
+-  center = center || this.computedCenter
+-  up     = up     || this.computedUp
++//Computes log base 10 of v
++exports.log10 = function(v) {
++  return  (v >= 1000000000) ? 9 : (v >= 100000000) ? 8 : (v >= 10000000) ? 7 :
++          (v >= 1000000) ? 6 : (v >= 100000) ? 5 : (v >= 10000) ? 4 :
++          (v >= 1000) ? 3 : (v >= 100) ? 2 : (v >= 10) ? 1 : 0;
++}
+ 
+-  var ux = up[0]
+-  var uy = up[1]
+-  var uz = up[2]
+-  var ul = len3(ux, uy, uz)
+-  if(ul < 1e-6) {
+-    return
+-  }
+-  ux /= ul
+-  uy /= ul
+-  uz /= ul
++//Counts number of bits
++exports.popCount = function(v) {
++  v = v - ((v >>> 1) & 0x55555555);
++  v = (v & 0x33333333) + ((v >>> 2) & 0x33333333);
++  return ((v + (v >>> 4) & 0xF0F0F0F) * 0x1010101) >>> 24;
++}
+ 
+-  var tx = eye[0] - center[0]
+-  var ty = eye[1] - center[1]
+-  var tz = eye[2] - center[2]
+-  var tl = len3(tx, ty, tz)
+-  if(tl < 1e-6) {
+-    return
+-  }
+-  tx /= tl
+-  ty /= tl
+-  tz /= tl
++//Counts number of trailing zeros
++function countTrailingZeros(v) {
++  var c = 32;
++  v &= -v;
++  if (v) c--;
++  if (v & 0x0000FFFF) c -= 16;
++  if (v & 0x00FF00FF) c -= 8;
++  if (v & 0x0F0F0F0F) c -= 4;
++  if (v & 0x33333333) c -= 2;
++  if (v & 0x55555555) c -= 1;
++  return c;
++}
++exports.countTrailingZeros = countTrailingZeros;
+ 
+-  var right = this.computedRight
+-  var rx = right[0]
+-  var ry = right[1]
+-  var rz = right[2]
+-  var ru = ux*rx + uy*ry + uz*rz
+-  rx -= ru * ux
+-  ry -= ru * uy
+-  rz -= ru * uz
+-  var rl = len3(rx, ry, rz)
++//Rounds to next power of 2
++exports.nextPow2 = function(v) {
++  v += v === 0;
++  --v;
++  v |= v >>> 1;
++  v |= v >>> 2;
++  v |= v >>> 4;
++  v |= v >>> 8;
++  v |= v >>> 16;
++  return v + 1;
++}
+ 
+-  if(rl < 0.01) {
+-    rx = uy * tz - uz * ty
+-    ry = uz * tx - ux * tz
+-    rz = ux * ty - uy * tx
+-    rl = len3(rx, ry, rz)
+-    if(rl < 1e-6) {
+-      return
++//Rounds down to previous power of 2
++exports.prevPow2 = function(v) {
++  v |= v >>> 1;
++  v |= v >>> 2;
++  v |= v >>> 4;
++  v |= v >>> 8;
++  v |= v >>> 16;
++  return v - (v>>>1);
++}
++
++//Computes parity of word
++exports.parity = function(v) {
++  v ^= v >>> 16;
++  v ^= v >>> 8;
++  v ^= v >>> 4;
++  v &= 0xf;
++  return (0x6996 >>> v) & 1;
++}
++
++var REVERSE_TABLE = new Array(256);
++
++(function(tab) {
++  for(var i=0; i<256; ++i) {
++    var v = i, r = i, s = 7;
++    for (v >>>= 1; v; v >>>= 1) {
++      r <<= 1;
++      r |= v & 1;
++      --s;
+     }
++    tab[i] = (r << s) & 0xff;
+   }
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
+-
+-  this.up.set(t, ux, uy, uz)
+-  this.right.set(t, rx, ry, rz)
+-  this.center.set(t, center[0], center[1], center[2])
+-  this.radius.set(t, Math.log(tl))
++})(REVERSE_TABLE);
+ 
+-  var fx = uy * rz - uz * ry
+-  var fy = uz * rx - ux * rz
+-  var fz = ux * ry - uy * rx
+-  var fl = len3(fx, fy, fz)
+-  fx /= fl
+-  fy /= fl
+-  fz /= fl
++//Reverse bits in a 32 bit word
++exports.reverse = function(v) {
++  return  (REVERSE_TABLE[ v         & 0xff] << 24) |
++          (REVERSE_TABLE[(v >>> 8)  & 0xff] << 16) |
++          (REVERSE_TABLE[(v >>> 16) & 0xff] << 8)  |
++           REVERSE_TABLE[(v >>> 24) & 0xff];
++}
+ 
+-  var tu = ux*tx + uy*ty + uz*tz
+-  var tr = rx*tx + ry*ty + rz*tz
+-  var tf = fx*tx + fy*ty + fz*tz
++//Interleave bits of 2 coordinates with 16 bits.  Useful for fast quadtree codes
++exports.interleave2 = function(x, y) {
++  x &= 0xFFFF;
++  x = (x | (x << 8)) & 0x00FF00FF;
++  x = (x | (x << 4)) & 0x0F0F0F0F;
++  x = (x | (x << 2)) & 0x33333333;
++  x = (x | (x << 1)) & 0x55555555;
+ 
+-  var phi   = Math.asin(clamp1(tu))
+-  var theta = Math.atan2(tf, tr)
++  y &= 0xFFFF;
++  y = (y | (y << 8)) & 0x00FF00FF;
++  y = (y | (y << 4)) & 0x0F0F0F0F;
++  y = (y | (y << 2)) & 0x33333333;
++  y = (y | (y << 1)) & 0x55555555;
+ 
+-  var angleState = this.angle._state
+-  var lastTheta  = angleState[angleState.length-1]
+-  var lastPhi    = angleState[angleState.length-2]
+-  lastTheta      = lastTheta % (2.0 * Math.PI)
+-  var dp = Math.abs(lastTheta + 2.0 * Math.PI - theta)
+-  var d0 = Math.abs(lastTheta - theta)
+-  var dn = Math.abs(lastTheta - 2.0 * Math.PI - theta)
+-  if(dp < d0) {
+-    lastTheta += 2.0 * Math.PI
+-  }
+-  if(dn < d0) {
+-    lastTheta -= 2.0 * Math.PI
+-  }
++  return x | (y << 1);
++}
+ 
+-  this.angle.jump(this.angle.lastT(), lastTheta, lastPhi)
+-  this.angle.set(t, theta, phi)
++//Extracts the nth interleaved component
++exports.deinterleave2 = function(v, n) {
++  v = (v >>> n) & 0x55555555;
++  v = (v | (v >>> 1))  & 0x33333333;
++  v = (v | (v >>> 2))  & 0x0F0F0F0F;
++  v = (v | (v >>> 4))  & 0x00FF00FF;
++  v = (v | (v >>> 16)) & 0x000FFFF;
++  return (v << 16) >> 16;
+ }
+ 
+-function createTurntableController(options) {
+-  options = options || {}
+ 
+-  var center = options.center || [0,0,0]
+-  var up     = options.up     || [0,1,0]
+-  var right  = options.right  || findOrthoPair(up)
+-  var radius = options.radius || 1.0
+-  var theta  = options.theta  || 0.0
+-  var phi    = options.phi    || 0.0
++//Interleave bits of 3 coordinates, each with 10 bits.  Useful for fast octree codes
++exports.interleave3 = function(x, y, z) {
++  x &= 0x3FF;
++  x  = (x | (x<<16)) & 4278190335;
++  x  = (x | (x<<8))  & 251719695;
++  x  = (x | (x<<4))  & 3272356035;
++  x  = (x | (x<<2))  & 1227133513;
+ 
+-  center = [].slice.call(center, 0, 3)
++  y &= 0x3FF;
++  y  = (y | (y<<16)) & 4278190335;
++  y  = (y | (y<<8))  & 251719695;
++  y  = (y | (y<<4))  & 3272356035;
++  y  = (y | (y<<2))  & 1227133513;
++  x |= (y << 1);
++  
++  z &= 0x3FF;
++  z  = (z | (z<<16)) & 4278190335;
++  z  = (z | (z<<8))  & 251719695;
++  z  = (z | (z<<4))  & 3272356035;
++  z  = (z | (z<<2))  & 1227133513;
++  
++  return x | (z << 2);
++}
+ 
+-  up = [].slice.call(up, 0, 3)
+-  normalize3(up, up)
++//Extracts nth interleaved component of a 3-tuple
++exports.deinterleave3 = function(v, n) {
++  v = (v >>> n)       & 1227133513;
++  v = (v | (v>>>2))   & 3272356035;
++  v = (v | (v>>>4))   & 251719695;
++  v = (v | (v>>>8))   & 4278190335;
++  v = (v | (v>>>16))  & 0x3FF;
++  return (v<<22)>>22;
++}
+ 
+-  right = [].slice.call(right, 0, 3)
+-  normalize3(right, right)
++//Computes next combination in colexicographic order (this is mistakenly called nextPermutation on the bit twiddling hacks page)
++exports.nextCombination = function(v) {
++  var t = v | (v - 1);
++  return (t + 1) | (((~t & -~t) - 1) >>> (countTrailingZeros(v) + 1));
++}
+ 
+-  if('eye' in options) {
+-    var eye = options.eye
+-    var toward = [
+-      eye[0]-center[0],
+-      eye[1]-center[1],
+-      eye[2]-center[2]
+-    ]
+-    cross(right, toward, up)
+-    if(len3(right[0], right[1], right[2]) < 1e-6) {
+-      right = findOrthoPair(up)
+-    } else {
+-      normalize3(right, right)
+-    }
+ 
+-    radius = len3(toward[0], toward[1], toward[2])
++},{}],50:[function(require,module,exports){
++(function (module, exports) {
+ 
+-    var ut = dot3(up, toward) / radius
+-    var rt = dot3(right, toward) / radius
+-    phi    = Math.acos(ut)
+-    theta  = Math.acos(rt)
+-  }
++'use strict';
+ 
+-  //Use logarithmic coordinates for radius
+-  radius = Math.log(radius)
++// Utils
+ 
+-  //Return the controller
+-  return new TurntableController(
+-    options.zoomMin,
+-    options.zoomMax,
+-    center,
+-    up,
+-    right,
+-    radius,
+-    theta,
+-    phi)
++function assert(val, msg) {
++  if (!val)
++    throw new Error(msg || 'Assertion failed');
+ }
+-},{"filtered-vector":21,"gl-mat4/invert":143,"gl-mat4/rotate":147,"gl-vec3/cross":24,"gl-vec3/dot":25,"gl-vec3/normalize":28}],40:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = createViewController
++// Could use `inherits` module, but don't want to move from single file
++// architecture yet.
++function inherits(ctor, superCtor) {
++  ctor.super_ = superCtor;
++  var TempCtor = function () {};
++  TempCtor.prototype = superCtor.prototype;
++  ctor.prototype = new TempCtor();
++  ctor.prototype.constructor = ctor;
++}
+ 
+-var createTurntable = require('turntable-camera-controller')
+-var createOrbit     = require('orbit-camera-controller')
+-var createMatrix    = require('matrix-camera-controller')
++// BN
+ 
+-function ViewController(controllers, mode) {
+-  this._controllerNames = Object.keys(controllers)
+-  this._controllerList = this._controllerNames.map(function(n) {
+-    return controllers[n]
+-  })
+-  this._mode   = mode
+-  this._active = controllers[mode]
+-  if(!this._active) {
+-    this._mode   = 'turntable'
+-    this._active = controllers.turntable
++function BN(number, base, endian) {
++  // May be `new BN(bn)` ?
++  if (number !== null &&
++      typeof number === 'object' &&
++      Array.isArray(number.words)) {
++    return number;
+   }
+-  this.modes = this._controllerNames
+-  this.computedMatrix = this._active.computedMatrix
+-  this.computedEye    = this._active.computedEye
+-  this.computedUp     = this._active.computedUp
+-  this.computedCenter = this._active.computedCenter
+-  this.computedRadius = this._active.computedRadius
+-}
+ 
+-var proto = ViewController.prototype
++  this.sign = false;
++  this.words = null;
++  this.length = 0;
+ 
+-var COMMON_METHODS = [
+-  ['flush', 1],
+-  ['idle', 1],
+-  ['lookAt', 4],
+-  ['rotate', 4],
+-  ['pan', 4],
+-  ['translate', 4],
+-  ['setMatrix', 2],
+-  ['setDistanceLimits', 2],
+-  ['setDistance', 2]
+-]
++  // Reduction context
++  this.red = null;
+ 
+-COMMON_METHODS.forEach(function(method) {
+-  var name = method[0]
+-  var argNames = []
+-  for(var i=0; i<method[1]; ++i) {
+-    argNames.push('a'+i)
++  if (base === 'le' || base === 'be') {
++    endian = base;
++    base = 10;
+   }
+-  var code = 'var cc=this._controllerList;for(var i=0;i<cc.length;++i){cc[i].'+method[0]+'('+argNames.join()+')}'
+-  proto[name] = Function.apply(null, argNames.concat(code))
+-})
+-
+-proto.recalcMatrix = function(t) {
+-  this._active.recalcMatrix(t)
+-}
+ 
+-proto.getDistance = function(t) {
+-  return this._active.getDistance(t)
+-}
+-proto.getDistanceLimits = function(out) {
+-  return this._active.getDistanceLimits(out)
++  if (number !== null)
++    this._init(number || 0, base || 10, endian || 'be');
+ }
++if (typeof module === 'object')
++  module.exports = BN;
++else
++  exports.BN = BN;
+ 
+-proto.lastT = function() {
+-  return this._active.lastT()
+-}
++BN.BN = BN;
++BN.wordSize = 26;
+ 
+-proto.setMode = function(mode) {
+-  if(mode === this._mode) {
+-    return
+-  }
+-  var idx = this._controllerNames.indexOf(mode)
+-  if(idx < 0) {
+-    return
++BN.prototype._init = function init(number, base, endian) {
++  if (typeof number === 'number') {
++    return this._initNumber(number, base, endian);
++  } else if (typeof number === 'object') {
++    return this._initArray(number, base, endian);
+   }
+-  var prev  = this._active
+-  var next  = this._controllerList[idx]
+-  var lastT = Math.max(prev.lastT(), next.lastT())
+-
+-  prev.recalcMatrix(lastT)
+-  next.setMatrix(lastT, prev.computedMatrix)
+-  
+-  this._active = next
+-  this._mode   = mode
+-
+-  //Update matrix properties
+-  this.computedMatrix = this._active.computedMatrix
+-  this.computedEye    = this._active.computedEye
+-  this.computedUp     = this._active.computedUp
+-  this.computedCenter = this._active.computedCenter
+-  this.computedRadius = this._active.computedRadius
+-}
+-
+-proto.getMode = function() {
+-  return this._mode
+-}
+-
+-function createViewController(options) {
+-  options = options || {}
+-
+-  var eye       = options.eye    || [0,0,1]
+-  var center    = options.center || [0,0,0]
+-  var up        = options.up     || [0,1,0]
+-  var limits    = options.distanceLimits || [0, Infinity]
+-  var mode      = options.mode   || 'turntable'
+-
+-  var turntable = createTurntable()
+-  var orbit     = createOrbit()
+-  var matrix    = createMatrix()
+-
+-  turntable.setDistanceLimits(limits[0], limits[1])
+-  turntable.lookAt(0, eye, center, up)
+-  orbit.setDistanceLimits(limits[0], limits[1])
+-  orbit.lookAt(0, eye, center, up)
+-  matrix.setDistanceLimits(limits[0], limits[1])
+-  matrix.lookAt(0, eye, center, up)
+-
+-  return new ViewController({
+-    turntable: turntable,
+-    orbit: orbit,
+-    matrix: matrix
+-  }, mode)
+-}
+-},{"matrix-camera-controller":29,"orbit-camera-controller":38,"turntable-camera-controller":39}],41:[function(require,module,exports){
+-module.exports = alphaShape
++  if (base === 'hex')
++    base = 16;
++  assert(base === (base | 0) && base >= 2 && base <= 36);
+ 
+-var ac = require('alpha-complex')
+-var bnd = require('simplicial-complex-boundary')
++  number = number.toString().replace(/\s+/g, '');
++  var start = 0;
++  if (number[0] === '-')
++    start++;
+ 
+-function alphaShape(alpha, points) {
+-  return bnd(ac(alpha, points))
+-}
+-},{"alpha-complex":42,"simplicial-complex-boundary":45}],42:[function(require,module,exports){
+-'use strict'
++  if (base === 16)
++    this._parseHex(number, start);
++  else
++    this._parseBase(number, base, start);
+ 
+-module.exports = alphaComplex
++  if (number[0] === '-')
++    this.sign = true;
+ 
+-var delaunay = require('delaunay-triangulate')
+-var circumradius = require('circumradius')
++  this.strip();
+ 
+-function alphaComplex(alpha, points) {
+-  return delaunay(points).filter(function(cell) {
+-    var simplex = new Array(cell.length)
+-    for(var i=0; i<cell.length; ++i) {
+-      simplex[i] = points[cell[i]]
+-    }
+-    return circumradius(simplex) * alpha < 1
+-  })
+-}
+-},{"circumradius":43,"delaunay-triangulate":120}],43:[function(require,module,exports){
+-module.exports = circumradius
++  if (endian !== 'le')
++    return;
+ 
+-var circumcenter = require('circumcenter')
++  this._initArray(this.toArray(), base, endian);
++};
+ 
+-function circumradius(points) {
+-  var center = circumcenter(points)
+-  var avgDist = 0.0
+-  for(var i=0; i<points.length; ++i) {
+-    var p = points[i]
+-    for(var j=0; j<center.length; ++j) {
+-      avgDist += Math.pow(p[j] - center[j], 2)
+-    }
++BN.prototype._initNumber = function _initNumber(number, base, endian) {
++  if (number < 0) {
++    this.sign = true;
++    number = -number;
+   }
+-  return Math.sqrt(avgDist / points.length)
+-}
+-},{"circumcenter":44}],44:[function(require,module,exports){
+-"use strict"
+-
+-var dup = require("dup")
+-var solve = require("robust-linear-solve")
+-
+-function dot(a, b) {
+-  var s = 0.0
+-  var d = a.length
+-  for(var i=0; i<d; ++i) {
+-    s += a[i] * b[i]
++  if (number < 0x4000000) {
++    this.words = [ number & 0x3ffffff ];
++    this.length = 1;
++  } else if (number < 0x10000000000000) {
++    this.words = [
++      number & 0x3ffffff,
++      (number / 0x4000000) & 0x3ffffff
++    ];
++    this.length = 2;
++  } else {
++    assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
++    this.words = [
++      number & 0x3ffffff,
++      (number / 0x4000000) & 0x3ffffff,
++      1
++    ];
++    this.length = 3;
+   }
+-  return s
+-}
+ 
+-function barycentricCircumcenter(points) {
+-  var N = points.length
+-  if(N === 0) {
+-    return []
+-  }
+-  
+-  var D = points[0].length
+-  var A = dup([points.length+1, points.length+1], 1.0)
+-  var b = dup([points.length+1], 1.0)
+-  A[N][N] = 0.0
+-  for(var i=0; i<N; ++i) {
+-    for(var j=0; j<=i; ++j) {
+-      A[j][i] = A[i][j] = 2.0 * dot(points[i], points[j])
+-    }
+-    b[i] = dot(points[i], points[i])
+-  }
+-  var x = solve(A, b)
++  if (endian !== 'le')
++    return;
+ 
+-  var denom = 0.0
+-  var h = x[N+1]
+-  for(var i=0; i<h.length; ++i) {
+-    denom += h[i]
+-  }
++  // Reverse the bytes
++  this._initArray(this.toArray(), base, endian);
++};
+ 
+-  var y = new Array(N)
+-  for(var i=0; i<N; ++i) {
+-    var h = x[i]
+-    var numer = 0.0
+-    for(var j=0; j<h.length; ++j) {
+-      numer += h[j]
+-    }
+-    y[i] =  numer / denom
++BN.prototype._initArray = function _initArray(number, base, endian) {
++  // Perhaps a Uint8Array
++  assert(typeof number.length === 'number');
++  if (number.length <= 0) {
++    this.words = [ 0 ];
++    this.length = 1;
++    return this;
+   }
+ 
+-  return y
+-}
++  this.length = Math.ceil(number.length / 3);
++  this.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    this.words[i] = 0;
+ 
+-function circumcenter(points) {
+-  if(points.length === 0) {
+-    return []
+-  }
+-  var D = points[0].length
+-  var result = dup([D])
+-  var weights = barycentricCircumcenter(points)
+-  for(var i=0; i<points.length; ++i) {
+-    for(var j=0; j<D; ++j) {
+-      result[j] += points[i][j] * weights[i]
++  var off = 0;
++  if (endian === 'be') {
++    for (var i = number.length - 1, j = 0; i >= 0; i -= 3) {
++      var w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
++      this.words[j] |= (w << off) & 0x3ffffff;
++      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
++      off += 24;
++      if (off >= 26) {
++        off -= 26;
++        j++;
++      }
++    }
++  } else if (endian === 'le') {
++    for (var i = 0, j = 0; i < number.length; i += 3) {
++      var w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
++      this.words[j] |= (w << off) & 0x3ffffff;
++      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
++      off += 24;
++      if (off >= 26) {
++        off -= 26;
++        j++;
++      }
+     }
+   }
+-  return result
+-}
+-
+-circumcenter.barycenetric = barycentricCircumcenter
+-module.exports = circumcenter
+-},{"dup":121,"robust-linear-solve":436}],45:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = boundary
++  return this.strip();
++};
+ 
+-var bnd = require('boundary-cells')
+-var reduce = require('reduce-simplicial-complex')
++function parseHex(str, start, end) {
++  var r = 0;
++  var len = Math.min(str.length, end);
++  for (var i = start; i < len; i++) {
++    var c = str.charCodeAt(i) - 48;
+ 
+-function boundary(cells) {
+-  return reduce(bnd(cells))
+-}
++    r <<= 4;
+ 
+-},{"boundary-cells":46,"reduce-simplicial-complex":49}],46:[function(require,module,exports){
+-"use strict"
++    // 'a' - 'f'
++    if (c >= 49 && c <= 54)
++      r |= c - 49 + 0xa;
+ 
+-module.exports = boundary
++    // 'A' - 'F'
++    else if (c >= 17 && c <= 22)
++      r |= c - 17 + 0xa;
+ 
+-function boundary(cells) {
+-  var n = cells.length
+-  var sz = 0
+-  for(var i=0; i<n; ++i) {
+-    sz += cells[i].length
+-  }
+-  var result = new Array(sz)
+-  var ptr = 0
+-  for(var i=0; i<n; ++i) {
+-    var c = cells[i]
+-    var d = c.length
+-    for(var j=0; j<d; ++j) {
+-      var b = result[ptr++] = new Array(d-1)
+-      for(var k=1; k<d; ++k) {
+-        b[k-1] = c[(j+k)%d]
+-      }
+-    }
++    // '0' - '9'
++    else
++      r |= c & 0xf;
+   }
+-  return result
++  return r;
+ }
+ 
+-},{}],47:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = orientation
++BN.prototype._parseHex = function _parseHex(number, start) {
++  // Create possibly bigger array to ensure that it fits the number
++  this.length = Math.ceil((number.length - start) / 6);
++  this.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    this.words[i] = 0;
+ 
+-function orientation(s) {
+-  var p = 1
+-  for(var i=1; i<s.length; ++i) {
+-    for(var j=0; j<i; ++j) {
+-      if(s[i] < s[j]) {
+-        p = -p
+-      } else if(s[j] === s[i]) {
+-        return 0
+-      }
++  // Scan 24-bit chunks and add them to the number
++  var off = 0;
++  for (var i = number.length - 6, j = 0; i >= start; i -= 6) {
++    var w = parseHex(number, i, i + 6);
++    this.words[j] |= (w << off) & 0x3ffffff;
++    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
++    off += 24;
++    if (off >= 26) {
++      off -= 26;
++      j++;
+     }
+   }
+-  return p
+-}
+-
+-},{}],48:[function(require,module,exports){
+-'use strict'
+-
+-var compareCells = require('compare-cell')
+-var parity = require('cell-orientation')
+-
+-module.exports = compareOrientedCells
++  if (i + 6 !== start) {
++    var w = parseHex(number, start, i + 6);
++    this.words[j] |= (w << off) & 0x3ffffff;
++    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
++  }
++  this.strip();
++};
+ 
+-function compareOrientedCells(a, b) {
+-  return compareCells(a, b) || parity(a) - parity(b)
+-}
++function parseBase(str, start, end, mul) {
++  var r = 0;
++  var len = Math.min(str.length, end);
++  for (var i = start; i < len; i++) {
++    var c = str.charCodeAt(i) - 48;
+ 
+-},{"cell-orientation":47,"compare-cell":107}],49:[function(require,module,exports){
+-'use strict'
++    r *= mul;
+ 
+-var compareCell = require('compare-cell')
+-var compareOrientedCell = require('compare-oriented-cell')
+-var orientation = require('cell-orientation')
++    // 'a'
++    if (c >= 49)
++      r += c - 49 + 0xa;
+ 
+-module.exports = reduceCellComplex
++    // 'A'
++    else if (c >= 17)
++      r += c - 17 + 0xa;
+ 
+-function reduceCellComplex(cells) {
+-  cells.sort(compareOrientedCell)
+-  var n = cells.length
+-  var ptr = 0
+-  for(var i=0; i<n; ++i) {
+-    var c = cells[i]
+-    var o = orientation(c)
+-    if(o === 0) {
+-      continue
+-    }
+-    if(ptr > 0) {
+-      var f = cells[ptr-1]
+-      if(compareCell(c, f) === 0 &&
+-         orientation(f)    !== o) {
+-        ptr -= 1
+-        continue
+-      }
+-    }
+-    cells[ptr++] = c
++    // '0' - '9'
++    else
++      r += c;
+   }
+-  cells.length = ptr
+-  return cells
++  return r;
+ }
+ 
+-},{"cell-orientation":47,"compare-cell":107,"compare-oriented-cell":48}],50:[function(require,module,exports){
+-'use strict';
+-
+-var arraytools  = function () {
+-
+-  var that = {};
++BN.prototype._parseBase = function _parseBase(number, base, start) {
++  // Initialize as zero
++  this.words = [ 0 ];
++  this.length = 1;
+ 
+-  var RGB_REGEX =  /^rgba?\(\s*\d{1,3}\s*,\s*\d{1,3}\s*,\s*\d{1,3}\s*(,.*)?\)$/;
+-  var RGB_GROUP_REGEX = /^rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,?\s*(.*)?\)$/;
++  // Find length of limb in base
++  for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base)
++    limbLen++;
++  limbLen--;
++  limbPow = (limbPow / base) | 0;
+ 
+-  function isPlainObject (v) {
+-    return !Array.isArray(v) && v !== null && typeof v === 'object';
+-  }
++  var total = number.length - start;
++  var mod = total % limbLen;
++  var end = Math.min(total, total - mod) + start;
+ 
+-  function linspace (start, end, num) {
+-    var inc = (end - start) / Math.max(num - 1, 1);
+-    var a = [];
+-    for( var ii = 0; ii < num; ii++)
+-      a.push(start + ii*inc);
+-    return a;
+-  }
++  var word = 0;
++  for (var i = start; i < end; i += limbLen) {
++    word = parseBase(number, i, i + limbLen, base);
+ 
+-  function zip () {
+-      var arrays = [].slice.call(arguments);
+-      var lengths = arrays.map(function (a) {return a.length;});
+-      var len = Math.min.apply(null, lengths);
+-      var zipped = [];
+-      for (var i = 0; i < len; i++) {
+-          zipped[i] = [];
+-          for (var j = 0; j < arrays.length; ++j) {
+-              zipped[i][j] = arrays[j][i];
+-          }
+-      }
+-      return zipped;
++    this.imuln(limbPow);
++    if (this.words[0] + word < 0x4000000)
++      this.words[0] += word;
++    else
++      this._iaddn(word);
+   }
+ 
+-  function zip3 (a, b, c) {
+-      var len = Math.min.apply(null, [a.length, b.length, c.length]);
+-      var result = [];
+-      for (var n = 0; n < len; n++) {
+-          result.push([a[n], b[n], c[n]]);
+-      }
+-      return result;
+-  }
++  if (mod !== 0) {
++    var pow = 1;
++    var word = parseBase(number, i, number.length, base);
+ 
+-  function sum (A) {
+-    var acc = 0;
+-    accumulate(A, acc);
+-    function accumulate(x) {
+-      for (var i = 0; i < x.length; i++) {
+-        if (Array.isArray(x[i]))
+-          accumulate(x[i], acc);
+-        else
+-          acc += x[i];
+-      }
+-    }
+-    return acc;
++    for (var i = 0; i < mod; i++)
++      pow *= base;
++    this.imuln(pow);
++    if (this.words[0] + word < 0x4000000)
++      this.words[0] += word;
++    else
++      this._iaddn(word);
+   }
++};
+ 
+-  function copy2D (arr) {
+-    var carr = [];
+-    for (var i = 0; i < arr.length; ++i) {
+-      carr[i] = [];
+-      for (var j = 0; j < arr[i].length; ++j) {
+-        carr[i][j] = arr[i][j];
+-      }
+-    }
++BN.prototype.copy = function copy(dest) {
++  dest.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    dest.words[i] = this.words[i];
++  dest.length = this.length;
++  dest.sign = this.sign;
++  dest.red = this.red;
++};
+ 
+-    return carr;
+-  }
++BN.prototype.clone = function clone() {
++  var r = new BN(null);
++  this.copy(r);
++  return r;
++};
+ 
++// Remove leading `0` from `this`
++BN.prototype.strip = function strip() {
++  while (this.length > 1 && this.words[this.length - 1] === 0)
++    this.length--;
++  return this._normSign();
++};
+ 
+-  function copy1D (arr) {
+-    var carr = [];
+-    for (var i = 0; i < arr.length; ++i) {
+-      carr[i] = arr[i];
+-    }
++BN.prototype._normSign = function _normSign() {
++  // -0 = 0
++  if (this.length === 1 && this.words[0] === 0)
++    this.sign = false;
++  return this;
++};
+ 
+-    return carr;
+-  }
++BN.prototype.inspect = function inspect() {
++  return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
++};
+ 
++/*
+ 
+-  function isEqual(arr1, arr2) {
+-    if(arr1.length !== arr2.length)
+-      return false;
+-    for(var i = arr1.length; i--;) {
+-      if(arr1[i] !== arr2[i])
+-        return false;
+-    }
++var zeros = [];
++var groupSizes = [];
++var groupBases = [];
+ 
+-    return true;
++var s = '';
++var i = -1;
++while (++i < BN.wordSize) {
++  zeros[i] = s;
++  s += '0';
++}
++groupSizes[0] = 0;
++groupSizes[1] = 0;
++groupBases[0] = 0;
++groupBases[1] = 0;
++var base = 2 - 1;
++while (++base < 36 + 1) {
++  var groupSize = 0;
++  var groupBase = 1;
++  while (groupBase < (1 << BN.wordSize) / base) {
++    groupBase *= base;
++    groupSize += 1;
+   }
++  groupSizes[base] = groupSize;
++  groupBases[base] = groupBase;
++}
+ 
++*/
+ 
+-  function str2RgbArray(str, twoFiftySix) {
+-    // convert hex or rbg strings to 0->1 or 0->255 rgb array
+-    var rgb,
+-        match;
++var zeros = [
++  '',
++  '0',
++  '00',
++  '000',
++  '0000',
++  '00000',
++  '000000',
++  '0000000',
++  '00000000',
++  '000000000',
++  '0000000000',
++  '00000000000',
++  '000000000000',
++  '0000000000000',
++  '00000000000000',
++  '000000000000000',
++  '0000000000000000',
++  '00000000000000000',
++  '000000000000000000',
++  '0000000000000000000',
++  '00000000000000000000',
++  '000000000000000000000',
++  '0000000000000000000000',
++  '00000000000000000000000',
++  '000000000000000000000000',
++  '0000000000000000000000000'
++];
+ 
+-    if (typeof str !== 'string') return str;
++var groupSizes = [
++  0, 0,
++  25, 16, 12, 11, 10, 9, 8,
++  8, 7, 7, 7, 7, 6, 6,
++  6, 6, 6, 6, 6, 5, 5,
++  5, 5, 5, 5, 5, 5, 5,
++  5, 5, 5, 5, 5, 5, 5
++];
+ 
+-    rgb = [];
+-    // hex notation
+-    if (str[0] === '#') {
+-      str = str.substr(1) // remove hash
+-      if (str.length === 3) str += str // fff -> ffffff
+-      match = parseInt(str, 16);
+-      rgb[0] = ((match >> 16) & 255);
+-      rgb[1] = ((match >> 8) & 255);
+-      rgb[2] = (match & 255);
+-    }
++var groupBases = [
++  0, 0,
++  33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
++  43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
++  16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
++  6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
++  24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
++];
+ 
+-    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
+-    else if (RGB_REGEX.test(str)) {
+-      match = str.match(RGB_GROUP_REGEX);
+-      rgb[0] = parseInt(match[1]);
+-      rgb[1] = parseInt(match[2]);
+-      rgb[2] = parseInt(match[3]);
++BN.prototype.toString = function toString(base, padding) {
++  base = base || 10;
++  if (base === 16 || base === 'hex') {
++    var out = '';
++    var off = 0;
++    var padding = padding | 0 || 1;
++    var carry = 0;
++    for (var i = 0; i < this.length; i++) {
++      var w = this.words[i];
++      var word = (((w << off) | carry) & 0xffffff).toString(16);
++      carry = (w >>> (24 - off)) & 0xffffff;
++      if (carry !== 0 || i !== this.length - 1)
++        out = zeros[6 - word.length] + word + out;
++      else
++        out = word + out;
++      off += 2;
++      if (off >= 26) {
++        off -= 26;
++        i--;
++      }
+     }
++    if (carry !== 0)
++      out = carry.toString(16) + out;
++    while (out.length % padding !== 0)
++      out = '0' + out;
++    if (this.sign)
++      out = '-' + out;
++    return out;
++  } else if (base === (base | 0) && base >= 2 && base <= 36) {
++    // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
++    var groupSize = groupSizes[base];
++    // var groupBase = Math.pow(base, groupSize);
++    var groupBase = groupBases[base];
++    var out = '';
++    var c = this.clone();
++    c.sign = false;
++    while (c.cmpn(0) !== 0) {
++      var r = c.modn(groupBase).toString(base);
++      c = c.idivn(groupBase);
+ 
+-    if (!twoFiftySix) {
+-      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
++      if (c.cmpn(0) !== 0)
++        out = zeros[groupSize - r.length] + r + out;
++      else
++        out = r + out;
+     }
+-
+-
+-    return rgb;
++    if (this.cmpn(0) === 0)
++      out = '0' + out;
++    if (this.sign)
++      out = '-' + out;
++    return out;
++  } else {
++    assert(false, 'Base should be between 2 and 36');
+   }
++};
+ 
++BN.prototype.toJSON = function toJSON() {
++  return this.toString(16);
++};
+ 
+-  function str2RgbaArray(str, twoFiftySix) {
+-    // convert hex or rbg strings to 0->1 or 0->255 rgb array
+-    var rgb,
+-        match;
++BN.prototype.toArray = function toArray(endian) {
++  this.strip();
++  var res = new Array(this.byteLength());
++  res[0] = 0;
+ 
+-    if (typeof str !== 'string') return str;
++  var q = this.clone();
++  if (endian !== 'le') {
++    // Assume big-endian
++    for (var i = 0; q.cmpn(0) !== 0; i++) {
++      var b = q.andln(0xff);
++      q.ishrn(8);
+ 
+-    rgb = [];
+-    // hex notation
+-    if (str[0] === '#') {
+-      str = str.substr(1) // remove hash
+-      if (str.length === 3) str += str // fff -> ffffff
+-      match = parseInt(str, 16);
+-      rgb[0] = ((match >> 16) & 255);
+-      rgb[1] = ((match >> 8) & 255);
+-      rgb[2] = (match & 255);
++      res[res.length - i - 1] = b;
+     }
++  } else {
++    // Assume little-endian
++    for (var i = 0; q.cmpn(0) !== 0; i++) {
++      var b = q.andln(0xff);
++      q.ishrn(8);
+ 
+-    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
+-    else if (RGB_REGEX.test(str)) {
+-      match = str.match(RGB_GROUP_REGEX);
+-      rgb[0] = parseInt(match[1]);
+-      rgb[1] = parseInt(match[2]);
+-      rgb[2] = parseInt(match[3]);
+-      if (match[4]) rgb[3] = parseFloat(match[4]);
+-      else rgb[3] = 1.0;
++      res[i] = b;
+     }
++  }
+ 
++  return res;
++};
+ 
+-
+-    if (!twoFiftySix) {
+-      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
++if (Math.clz32) {
++  BN.prototype._countBits = function _countBits(w) {
++    return 32 - Math.clz32(w);
++  };
++} else {
++  BN.prototype._countBits = function _countBits(w) {
++    var t = w;
++    var r = 0;
++    if (t >= 0x1000) {
++      r += 13;
++      t >>>= 13;
++    }
++    if (t >= 0x40) {
++      r += 7;
++      t >>>= 7;
++    }
++    if (t >= 0x8) {
++      r += 4;
++      t >>>= 4;
++    }
++    if (t >= 0x02) {
++      r += 2;
++      t >>>= 2;
+     }
++    return r + t;
++  };
++}
+ 
++BN.prototype._zeroBits = function _zeroBits(w) {
++  // Short-cut
++  if (w === 0)
++    return 26;
+ 
+-    return rgb;
++  var t = w;
++  var r = 0;
++  if ((t & 0x1fff) === 0) {
++    r += 13;
++    t >>>= 13;
++  }
++  if ((t & 0x7f) === 0) {
++    r += 7;
++    t >>>= 7;
+   }
++  if ((t & 0xf) === 0) {
++    r += 4;
++    t >>>= 4;
++  }
++  if ((t & 0x3) === 0) {
++    r += 2;
++    t >>>= 2;
++  }
++  if ((t & 0x1) === 0)
++    r++;
++  return r;
++};
+ 
++// Return number of used bits in a BN
++BN.prototype.bitLength = function bitLength() {
++  var hi = 0;
++  var w = this.words[this.length - 1];
++  var hi = this._countBits(w);
++  return (this.length - 1) * 26 + hi;
++};
+ 
++// Number of trailing zero bits
++BN.prototype.zeroBits = function zeroBits() {
++  if (this.cmpn(0) === 0)
++    return 0;
+ 
++  var r = 0;
++  for (var i = 0; i < this.length; i++) {
++    var b = this._zeroBits(this.words[i]);
++    r += b;
++    if (b !== 26)
++      break;
++  }
++  return r;
++};
+ 
++BN.prototype.byteLength = function byteLength() {
++  return Math.ceil(this.bitLength() / 8);
++};
+ 
+-  that.isPlainObject = isPlainObject;
+-  that.linspace = linspace;
+-  that.zip3 = zip3;
+-  that.sum = sum;
+-  that.zip = zip;
+-  that.isEqual = isEqual;
+-  that.copy2D = copy2D;
+-  that.copy1D = copy1D;
+-  that.str2RgbArray = str2RgbArray;
+-  that.str2RgbaArray = str2RgbaArray;
++// Return negative clone of `this`
++BN.prototype.neg = function neg() {
++  if (this.cmpn(0) === 0)
++    return this.clone();
+ 
+-  return that
++  var r = this.clone();
++  r.sign = !this.sign;
++  return r;
++};
+ 
+-}
+ 
++// Or `num` with `this` in-place
++BN.prototype.ior = function ior(num) {
++  this.sign = this.sign || num.sign;
+ 
+-module.exports = arraytools();
++  while (this.length < num.length)
++    this.words[this.length++] = 0;
+ 
+-},{}],51:[function(require,module,exports){
+-/**
+- * Bit twiddling hacks for JavaScript.
+- *
+- * Author: Mikola Lysenko
+- *
+- * Ported from Stanford bit twiddling hack library:
+- *    http://graphics.stanford.edu/~seander/bithacks.html
+- */
++  for (var i = 0; i < num.length; i++)
++    this.words[i] = this.words[i] | num.words[i];
+ 
+-"use strict"; "use restrict";
++  return this.strip();
++};
+ 
+-//Number of bits in an integer
+-var INT_BITS = 32;
+ 
+-//Constants
+-exports.INT_BITS  = INT_BITS;
+-exports.INT_MAX   =  0x7fffffff;
+-exports.INT_MIN   = -1<<(INT_BITS-1);
++// Or `num` with `this`
++BN.prototype.or = function or(num) {
++  if (this.length > num.length)
++    return this.clone().ior(num);
++  else
++    return num.clone().ior(this);
++};
+ 
+-//Returns -1, 0, +1 depending on sign of x
+-exports.sign = function(v) {
+-  return (v > 0) - (v < 0);
+-}
+ 
+-//Computes absolute value of integer
+-exports.abs = function(v) {
+-  var mask = v >> (INT_BITS-1);
+-  return (v ^ mask) - mask;
+-}
++// And `num` with `this` in-place
++BN.prototype.iand = function iand(num) {
++  this.sign = this.sign && num.sign;
+ 
+-//Computes minimum of integers x and y
+-exports.min = function(x, y) {
+-  return y ^ ((x ^ y) & -(x < y));
+-}
++  // b = min-length(num, this)
++  var b;
++  if (this.length > num.length)
++    b = num;
++  else
++    b = this;
+ 
+-//Computes maximum of integers x and y
+-exports.max = function(x, y) {
+-  return x ^ ((x ^ y) & -(x < y));
+-}
++  for (var i = 0; i < b.length; i++)
++    this.words[i] = this.words[i] & num.words[i];
+ 
+-//Checks if a number is a power of two
+-exports.isPow2 = function(v) {
+-  return !(v & (v-1)) && (!!v);
+-}
++  this.length = b.length;
+ 
+-//Computes log base 2 of v
+-exports.log2 = function(v) {
+-  var r, shift;
+-  r =     (v > 0xFFFF) << 4; v >>>= r;
+-  shift = (v > 0xFF  ) << 3; v >>>= shift; r |= shift;
+-  shift = (v > 0xF   ) << 2; v >>>= shift; r |= shift;
+-  shift = (v > 0x3   ) << 1; v >>>= shift; r |= shift;
+-  return r | (v >> 1);
+-}
++  return this.strip();
++};
+ 
+-//Computes log base 10 of v
+-exports.log10 = function(v) {
+-  return  (v >= 1000000000) ? 9 : (v >= 100000000) ? 8 : (v >= 10000000) ? 7 :
+-          (v >= 1000000) ? 6 : (v >= 100000) ? 5 : (v >= 10000) ? 4 :
+-          (v >= 1000) ? 3 : (v >= 100) ? 2 : (v >= 10) ? 1 : 0;
+-}
+ 
+-//Counts number of bits
+-exports.popCount = function(v) {
+-  v = v - ((v >>> 1) & 0x55555555);
+-  v = (v & 0x33333333) + ((v >>> 2) & 0x33333333);
+-  return ((v + (v >>> 4) & 0xF0F0F0F) * 0x1010101) >>> 24;
+-}
++// And `num` with `this`
++BN.prototype.and = function and(num) {
++  if (this.length > num.length)
++    return this.clone().iand(num);
++  else
++    return num.clone().iand(this);
++};
+ 
+-//Counts number of trailing zeros
+-function countTrailingZeros(v) {
+-  var c = 32;
+-  v &= -v;
+-  if (v) c--;
+-  if (v & 0x0000FFFF) c -= 16;
+-  if (v & 0x00FF00FF) c -= 8;
+-  if (v & 0x0F0F0F0F) c -= 4;
+-  if (v & 0x33333333) c -= 2;
+-  if (v & 0x55555555) c -= 1;
+-  return c;
+-}
+-exports.countTrailingZeros = countTrailingZeros;
+ 
+-//Rounds to next power of 2
+-exports.nextPow2 = function(v) {
+-  v += v === 0;
+-  --v;
+-  v |= v >>> 1;
+-  v |= v >>> 2;
+-  v |= v >>> 4;
+-  v |= v >>> 8;
+-  v |= v >>> 16;
+-  return v + 1;
+-}
++// Xor `num` with `this` in-place
++BN.prototype.ixor = function ixor(num) {
++  this.sign = this.sign || num.sign;
+ 
+-//Rounds down to previous power of 2
+-exports.prevPow2 = function(v) {
+-  v |= v >>> 1;
+-  v |= v >>> 2;
+-  v |= v >>> 4;
+-  v |= v >>> 8;
+-  v |= v >>> 16;
+-  return v - (v>>>1);
+-}
++  // a.length > b.length
++  var a;
++  var b;
++  if (this.length > num.length) {
++    a = this;
++    b = num;
++  } else {
++    a = num;
++    b = this;
++  }
+ 
+-//Computes parity of word
+-exports.parity = function(v) {
+-  v ^= v >>> 16;
+-  v ^= v >>> 8;
+-  v ^= v >>> 4;
+-  v &= 0xf;
+-  return (0x6996 >>> v) & 1;
+-}
++  for (var i = 0; i < b.length; i++)
++    this.words[i] = a.words[i] ^ b.words[i];
+ 
+-var REVERSE_TABLE = new Array(256);
++  if (this !== a)
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
+ 
+-(function(tab) {
+-  for(var i=0; i<256; ++i) {
+-    var v = i, r = i, s = 7;
+-    for (v >>>= 1; v; v >>>= 1) {
+-      r <<= 1;
+-      r |= v & 1;
+-      --s;
+-    }
+-    tab[i] = (r << s) & 0xff;
+-  }
+-})(REVERSE_TABLE);
++  this.length = a.length;
+ 
+-//Reverse bits in a 32 bit word
+-exports.reverse = function(v) {
+-  return  (REVERSE_TABLE[ v         & 0xff] << 24) |
+-          (REVERSE_TABLE[(v >>> 8)  & 0xff] << 16) |
+-          (REVERSE_TABLE[(v >>> 16) & 0xff] << 8)  |
+-           REVERSE_TABLE[(v >>> 24) & 0xff];
+-}
++  return this.strip();
++};
+ 
+-//Interleave bits of 2 coordinates with 16 bits.  Useful for fast quadtree codes
+-exports.interleave2 = function(x, y) {
+-  x &= 0xFFFF;
+-  x = (x | (x << 8)) & 0x00FF00FF;
+-  x = (x | (x << 4)) & 0x0F0F0F0F;
+-  x = (x | (x << 2)) & 0x33333333;
+-  x = (x | (x << 1)) & 0x55555555;
+ 
+-  y &= 0xFFFF;
+-  y = (y | (y << 8)) & 0x00FF00FF;
+-  y = (y | (y << 4)) & 0x0F0F0F0F;
+-  y = (y | (y << 2)) & 0x33333333;
+-  y = (y | (y << 1)) & 0x55555555;
++// Xor `num` with `this`
++BN.prototype.xor = function xor(num) {
++  if (this.length > num.length)
++    return this.clone().ixor(num);
++  else
++    return num.clone().ixor(this);
++};
+ 
+-  return x | (y << 1);
+-}
+ 
+-//Extracts the nth interleaved component
+-exports.deinterleave2 = function(v, n) {
+-  v = (v >>> n) & 0x55555555;
+-  v = (v | (v >>> 1))  & 0x33333333;
+-  v = (v | (v >>> 2))  & 0x0F0F0F0F;
+-  v = (v | (v >>> 4))  & 0x00FF00FF;
+-  v = (v | (v >>> 16)) & 0x000FFFF;
+-  return (v << 16) >> 16;
+-}
++// Set `bit` of `this`
++BN.prototype.setn = function setn(bit, val) {
++  assert(typeof bit === 'number' && bit >= 0);
+ 
++  var off = (bit / 26) | 0;
++  var wbit = bit % 26;
+ 
+-//Interleave bits of 3 coordinates, each with 10 bits.  Useful for fast octree codes
+-exports.interleave3 = function(x, y, z) {
+-  x &= 0x3FF;
+-  x  = (x | (x<<16)) & 4278190335;
+-  x  = (x | (x<<8))  & 251719695;
+-  x  = (x | (x<<4))  & 3272356035;
+-  x  = (x | (x<<2))  & 1227133513;
+-
+-  y &= 0x3FF;
+-  y  = (y | (y<<16)) & 4278190335;
+-  y  = (y | (y<<8))  & 251719695;
+-  y  = (y | (y<<4))  & 3272356035;
+-  y  = (y | (y<<2))  & 1227133513;
+-  x |= (y << 1);
+-  
+-  z &= 0x3FF;
+-  z  = (z | (z<<16)) & 4278190335;
+-  z  = (z | (z<<8))  & 251719695;
+-  z  = (z | (z<<4))  & 3272356035;
+-  z  = (z | (z<<2))  & 1227133513;
+-  
+-  return x | (z << 2);
+-}
+-
+-//Extracts nth interleaved component of a 3-tuple
+-exports.deinterleave3 = function(v, n) {
+-  v = (v >>> n)       & 1227133513;
+-  v = (v | (v>>>2))   & 3272356035;
+-  v = (v | (v>>>4))   & 251719695;
+-  v = (v | (v>>>8))   & 4278190335;
+-  v = (v | (v>>>16))  & 0x3FF;
+-  return (v<<22)>>22;
+-}
+-
+-//Computes next combination in colexicographic order (this is mistakenly called nextPermutation on the bit twiddling hacks page)
+-exports.nextCombination = function(v) {
+-  var t = v | (v - 1);
+-  return (t + 1) | (((~t & -~t) - 1) >>> (countTrailingZeros(v) + 1));
+-}
+-
+-
+-},{}],52:[function(require,module,exports){
+-// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
+-//
+-// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
+-//
+-// Originally from narwhal.js (http://narwhaljs.org)
+-// Copyright (c) 2009 Thomas Robinson <280north.com>
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a copy
+-// of this software and associated documentation files (the 'Software'), to
+-// deal in the Software without restriction, including without limitation the
+-// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+-// sell copies of the Software, and to permit persons to whom the Software is
+-// furnished to do so, subject to the following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included in
+-// all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+-// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+-// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
++  while (this.length <= off)
++    this.words[this.length++] = 0;
+ 
+-// when used in node, this will actually load the util module we depend on
+-// versus loading the builtin util module as happens otherwise
+-// this is a bug in node module loading as far as I am concerned
+-var util = require('util/');
++  if (val)
++    this.words[off] = this.words[off] | (1 << wbit);
++  else
++    this.words[off] = this.words[off] & ~(1 << wbit);
+ 
+-var pSlice = Array.prototype.slice;
+-var hasOwn = Object.prototype.hasOwnProperty;
++  return this.strip();
++};
+ 
+-// 1. The assert module provides functions that throw
+-// AssertionError's when particular conditions are not met. The
+-// assert module must conform to the following interface.
+ 
+-var assert = module.exports = ok;
++// Add `num` to `this` in-place
++BN.prototype.iadd = function iadd(num) {
++  // negative + positive
++  if (this.sign && !num.sign) {
++    this.sign = false;
++    var r = this.isub(num);
++    this.sign = !this.sign;
++    return this._normSign();
+ 
+-// 2. The AssertionError is defined in assert.
+-// new assert.AssertionError({ message: message,
+-//                             actual: actual,
+-//                             expected: expected })
++  // positive + negative
++  } else if (!this.sign && num.sign) {
++    num.sign = false;
++    var r = this.isub(num);
++    num.sign = true;
++    return r._normSign();
++  }
+ 
+-assert.AssertionError = function AssertionError(options) {
+-  this.name = 'AssertionError';
+-  this.actual = options.actual;
+-  this.expected = options.expected;
+-  this.operator = options.operator;
+-  if (options.message) {
+-    this.message = options.message;
+-    this.generatedMessage = false;
++  // a.length > b.length
++  var a;
++  var b;
++  if (this.length > num.length) {
++    a = this;
++    b = num;
+   } else {
+-    this.message = getMessage(this);
+-    this.generatedMessage = true;
++    a = num;
++    b = this;
+   }
+-  var stackStartFunction = options.stackStartFunction || fail;
+ 
+-  if (Error.captureStackTrace) {
+-    Error.captureStackTrace(this, stackStartFunction);
++  var carry = 0;
++  for (var i = 0; i < b.length; i++) {
++    var r = a.words[i] + b.words[i] + carry;
++    this.words[i] = r & 0x3ffffff;
++    carry = r >>> 26;
++  }
++  for (; carry !== 0 && i < a.length; i++) {
++    var r = a.words[i] + carry;
++    this.words[i] = r & 0x3ffffff;
++    carry = r >>> 26;
+   }
+-  else {
+-    // non v8 browsers so we can have a stacktrace
+-    var err = new Error();
+-    if (err.stack) {
+-      var out = err.stack;
+ 
+-      // try to strip useless frames
+-      var fn_name = stackStartFunction.name;
+-      var idx = out.indexOf('\n' + fn_name);
+-      if (idx >= 0) {
+-        // once we have located the function frame
+-        // we need to strip out everything before it (and its line)
+-        var next_line = out.indexOf('\n', idx + 1);
+-        out = out.substring(next_line + 1);
+-      }
++  this.length = a.length;
++  if (carry !== 0) {
++    this.words[this.length] = carry;
++    this.length++;
++  // Copy the rest of the words
++  } else if (a !== this) {
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
++  }
+ 
+-      this.stack = out;
+-    }
++  return this;
++};
++
++// Add `num` to `this`
++BN.prototype.add = function add(num) {
++  if (num.sign && !this.sign) {
++    num.sign = false;
++    var res = this.sub(num);
++    num.sign = true;
++    return res;
++  } else if (!num.sign && this.sign) {
++    this.sign = false;
++    var res = num.sub(this);
++    this.sign = true;
++    return res;
+   }
++
++  if (this.length > num.length)
++    return this.clone().iadd(num);
++  else
++    return num.clone().iadd(this);
+ };
+ 
+-// assert.AssertionError instanceof Error
+-util.inherits(assert.AssertionError, Error);
++// Subtract `num` from `this` in-place
++BN.prototype.isub = function isub(num) {
++  // this - (-num) = this + num
++  if (num.sign) {
++    num.sign = false;
++    var r = this.iadd(num);
++    num.sign = true;
++    return r._normSign();
+ 
+-function replacer(key, value) {
+-  if (util.isUndefined(value)) {
+-    return '' + value;
+-  }
+-  if (util.isNumber(value) && !isFinite(value)) {
+-    return value.toString();
++  // -this - num = -(this + num)
++  } else if (this.sign) {
++    this.sign = false;
++    this.iadd(num);
++    this.sign = true;
++    return this._normSign();
+   }
+-  if (util.isFunction(value) || util.isRegExp(value)) {
+-    return value.toString();
++
++  // At this point both numbers are positive
++  var cmp = this.cmp(num);
++
++  // Optimization - zeroify
++  if (cmp === 0) {
++    this.sign = false;
++    this.length = 1;
++    this.words[0] = 0;
++    return this;
+   }
+-  return value;
+-}
+ 
+-function truncate(s, n) {
+-  if (util.isString(s)) {
+-    return s.length < n ? s : s.slice(0, n);
++  // a > b
++  var a;
++  var b;
++  if (cmp > 0) {
++    a = this;
++    b = num;
+   } else {
+-    return s;
++    a = num;
++    b = this;
+   }
+-}
+ 
+-function getMessage(self) {
+-  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
+-         self.operator + ' ' +
+-         truncate(JSON.stringify(self.expected, replacer), 128);
+-}
++  var carry = 0;
++  for (var i = 0; i < b.length; i++) {
++    var r = a.words[i] - b.words[i] + carry;
++    carry = r >> 26;
++    this.words[i] = r & 0x3ffffff;
++  }
++  for (; carry !== 0 && i < a.length; i++) {
++    var r = a.words[i] + carry;
++    carry = r >> 26;
++    this.words[i] = r & 0x3ffffff;
++  }
+ 
+-// At present only the three keys mentioned above are used and
+-// understood by the spec. Implementations or sub modules can pass
+-// other keys to the AssertionError's constructor - they will be
+-// ignored.
++  // Copy rest of the words
++  if (carry === 0 && i < a.length && a !== this)
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
++  this.length = Math.max(this.length, i);
+ 
+-// 3. All of the following functions must throw an AssertionError
+-// when a corresponding condition is not met, with a message that
+-// may be undefined if not provided.  All assertion methods provide
+-// both the actual and expected values to the assertion error for
+-// display purposes.
++  if (a !== this)
++    this.sign = true;
+ 
+-function fail(actual, expected, message, operator, stackStartFunction) {
+-  throw new assert.AssertionError({
+-    message: message,
+-    actual: actual,
+-    expected: expected,
+-    operator: operator,
+-    stackStartFunction: stackStartFunction
+-  });
+-}
++  return this.strip();
++};
+ 
+-// EXTENSION! allows for well behaved errors defined elsewhere.
+-assert.fail = fail;
++// Subtract `num` from `this`
++BN.prototype.sub = function sub(num) {
++  return this.clone().isub(num);
++};
+ 
+-// 4. Pure assertion tests whether a value is truthy, as determined
+-// by !!guard.
+-// assert.ok(guard, message_opt);
+-// This statement is equivalent to assert.equal(true, !!guard,
+-// message_opt);. To test strictly for the value true, use
+-// assert.strictEqual(true, guard, message_opt);.
++/*
++// NOTE: This could be potentionally used to generate loop-less multiplications
++function _genCombMulTo(alen, blen) {
++  var len = alen + blen - 1;
++  var src = [
++    'var a = this.words, b = num.words, o = out.words, c = 0, w, ' +
++        'mask = 0x3ffffff, shift = 0x4000000;',
++    'out.length = ' + len + ';'
++  ];
++  for (var k = 0; k < len; k++) {
++    var minJ = Math.max(0, k - alen + 1);
++    var maxJ = Math.min(k, blen - 1);
+ 
+-function ok(value, message) {
+-  if (!value) fail(value, true, message, '==', assert.ok);
++    for (var j = minJ; j <= maxJ; j++) {
++      var i = k - j;
++      var mul = 'a[' + i + '] * b[' + j + ']';
++
++      if (j === minJ) {
++        src.push('w = ' + mul + ' + c;');
++        src.push('c = (w / shift) | 0;');
++      } else {
++        src.push('w += ' + mul + ';');
++        src.push('c += (w / shift) | 0;');
++      }
++      src.push('w &= mask;');
++    }
++    src.push('o[' + k + '] = w;');
++  }
++  src.push('if (c !== 0) {',
++           '  o[' + k + '] = c;',
++           '  out.length++;',
++           '}',
++           'return out;');
++
++  return src.join('\n');
+ }
+-assert.ok = ok;
++*/
+ 
+-// 5. The equality assertion tests shallow, coercive equality with
+-// ==.
+-// assert.equal(actual, expected, message_opt);
++BN.prototype._smallMulTo = function _smallMulTo(num, out) {
++  out.sign = num.sign !== this.sign;
++  out.length = this.length + num.length;
+ 
+-assert.equal = function equal(actual, expected, message) {
+-  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
++  var carry = 0;
++  for (var k = 0; k < out.length - 1; k++) {
++    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
++    // note that ncarry could be >= 0x3ffffff
++    var ncarry = carry >>> 26;
++    var rword = carry & 0x3ffffff;
++    var maxJ = Math.min(k, num.length - 1);
++    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i] | 0;
++      var b = num.words[j] | 0;
++      var r = a * b;
++
++      var lo = r & 0x3ffffff;
++      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
++      lo = (lo + rword) | 0;
++      rword = lo & 0x3ffffff;
++      ncarry = (ncarry + (lo >>> 26)) | 0;
++    }
++    out.words[k] = rword;
++    carry = ncarry;
++  }
++  if (carry !== 0) {
++    out.words[k] = carry;
++  } else {
++    out.length--;
++  }
++
++  return out.strip();
+ };
+ 
+-// 6. The non-equality assertion tests for whether two objects are not equal
+-// with != assert.notEqual(actual, expected, message_opt);
++BN.prototype._bigMulTo = function _bigMulTo(num, out) {
++  out.sign = num.sign !== this.sign;
++  out.length = this.length + num.length;
+ 
+-assert.notEqual = function notEqual(actual, expected, message) {
+-  if (actual == expected) {
+-    fail(actual, expected, message, '!=', assert.notEqual);
++  var carry = 0;
++  var hncarry = 0;
++  for (var k = 0; k < out.length - 1; k++) {
++    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
++    // note that ncarry could be >= 0x3ffffff
++    var ncarry = hncarry;
++    hncarry = 0;
++    var rword = carry & 0x3ffffff;
++    var maxJ = Math.min(k, num.length - 1);
++    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i] | 0;
++      var b = num.words[j] | 0;
++      var r = a * b;
++
++      var lo = r & 0x3ffffff;
++      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
++      lo = (lo + rword) | 0;
++      rword = lo & 0x3ffffff;
++      ncarry = (ncarry + (lo >>> 26)) | 0;
++
++      hncarry += ncarry >>> 26;
++      ncarry &= 0x3ffffff;
++    }
++    out.words[k] = rword;
++    carry = ncarry;
++    ncarry = hncarry;
++  }
++  if (carry !== 0) {
++    out.words[k] = carry;
++  } else {
++    out.length--;
+   }
++
++  return out.strip();
+ };
+ 
+-// 7. The equivalence assertion tests a deep equality relation.
+-// assert.deepEqual(actual, expected, message_opt);
++BN.prototype.mulTo = function mulTo(num, out) {
++  var res;
++  if (this.length + num.length < 63)
++    res = this._smallMulTo(num, out);
++  else
++    res = this._bigMulTo(num, out);
++  return res;
++};
+ 
+-assert.deepEqual = function deepEqual(actual, expected, message) {
+-  if (!_deepEqual(actual, expected)) {
+-    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
+-  }
++// Multiply `this` by `num`
++BN.prototype.mul = function mul(num) {
++  var out = new BN(null);
++  out.words = new Array(this.length + num.length);
++  return this.mulTo(num, out);
+ };
+ 
+-function _deepEqual(actual, expected) {
+-  // 7.1. All identical values are equivalent, as determined by ===.
+-  if (actual === expected) {
+-    return true;
++// In-place Multiplication
++BN.prototype.imul = function imul(num) {
++  if (this.cmpn(0) === 0 || num.cmpn(0) === 0) {
++    this.words[0] = 0;
++    this.length = 1;
++    return this;
++  }
+ 
+-  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
+-    if (actual.length != expected.length) return false;
++  var tlen = this.length;
++  var nlen = num.length;
+ 
+-    for (var i = 0; i < actual.length; i++) {
+-      if (actual[i] !== expected[i]) return false;
++  this.sign = num.sign !== this.sign;
++  this.length = this.length + num.length;
++  this.words[this.length - 1] = 0;
++
++  for (var k = this.length - 2; k >= 0; k--) {
++    // Sum all words with the same `i + j = k` and accumulate `carry`,
++    // note that carry could be >= 0x3ffffff
++    var carry = 0;
++    var rword = 0;
++    var maxJ = Math.min(k, nlen - 1);
++    for (var j = Math.max(0, k - tlen + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i];
++      var b = num.words[j];
++      var r = a * b;
++
++      var lo = r & 0x3ffffff;
++      carry += (r / 0x4000000) | 0;
++      lo += rword;
++      rword = lo & 0x3ffffff;
++      carry += lo >>> 26;
+     }
++    this.words[k] = rword;
++    this.words[k + 1] += carry;
++    carry = 0;
++  }
+ 
+-    return true;
++  // Propagate overflows
++  var carry = 0;
++  for (var i = 1; i < this.length; i++) {
++    var w = this.words[i] + carry;
++    this.words[i] = w & 0x3ffffff;
++    carry = w >>> 26;
++  }
+ 
+-  // 7.2. If the expected value is a Date object, the actual value is
+-  // equivalent if it is also a Date object that refers to the same time.
+-  } else if (util.isDate(actual) && util.isDate(expected)) {
+-    return actual.getTime() === expected.getTime();
++  return this.strip();
++};
+ 
+-  // 7.3 If the expected value is a RegExp object, the actual value is
+-  // equivalent if it is also a RegExp object with the same source and
+-  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
+-  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
+-    return actual.source === expected.source &&
+-           actual.global === expected.global &&
+-           actual.multiline === expected.multiline &&
+-           actual.lastIndex === expected.lastIndex &&
+-           actual.ignoreCase === expected.ignoreCase;
++BN.prototype.imuln = function imuln(num) {
++  assert(typeof num === 'number');
+ 
+-  // 7.4. Other pairs that do not both pass typeof value == 'object',
+-  // equivalence is determined by ==.
+-  } else if (!util.isObject(actual) && !util.isObject(expected)) {
+-    return actual == expected;
++  // Carry
++  var carry = 0;
++  for (var i = 0; i < this.length; i++) {
++    var w = this.words[i] * num;
++    var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
++    carry >>= 26;
++    carry += (w / 0x4000000) | 0;
++    // NOTE: lo is 27bit maximum
++    carry += lo >>> 26;
++    this.words[i] = lo & 0x3ffffff;
++  }
+ 
+-  // 7.5 For all other Object pairs, including Array objects, equivalence is
+-  // determined by having the same number of owned properties (as verified
+-  // with Object.prototype.hasOwnProperty.call), the same set of keys
+-  // (although not necessarily the same order), equivalent values for every
+-  // corresponding key, and an identical 'prototype' property. Note: this
+-  // accounts for both named and indexed properties on Arrays.
+-  } else {
+-    return objEquiv(actual, expected);
++  if (carry !== 0) {
++    this.words[i] = carry;
++    this.length++;
+   }
+-}
+ 
+-function isArguments(object) {
+-  return Object.prototype.toString.call(object) == '[object Arguments]';
+-}
++  return this;
++};
+ 
+-function objEquiv(a, b) {
+-  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
+-    return false;
+-  // an identical 'prototype' property.
+-  if (a.prototype !== b.prototype) return false;
+-  // if one is a primitive, the other must be same
+-  if (util.isPrimitive(a) || util.isPrimitive(b)) {
+-    return a === b;
+-  }
+-  var aIsArgs = isArguments(a),
+-      bIsArgs = isArguments(b);
+-  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
+-    return false;
+-  if (aIsArgs) {
+-    a = pSlice.call(a);
+-    b = pSlice.call(b);
+-    return _deepEqual(a, b);
+-  }
+-  var ka = objectKeys(a),
+-      kb = objectKeys(b),
+-      key, i;
+-  // having the same number of owned properties (keys incorporates
+-  // hasOwnProperty)
+-  if (ka.length != kb.length)
+-    return false;
+-  //the same set of keys (although not necessarily the same order),
+-  ka.sort();
+-  kb.sort();
+-  //~~~cheap key test
+-  for (i = ka.length - 1; i >= 0; i--) {
+-    if (ka[i] != kb[i])
+-      return false;
+-  }
+-  //equivalent values for every corresponding key, and
+-  //~~~possibly expensive deep test
+-  for (i = ka.length - 1; i >= 0; i--) {
+-    key = ka[i];
+-    if (!_deepEqual(a[key], b[key])) return false;
+-  }
+-  return true;
+-}
+-
+-// 8. The non-equivalence assertion tests for any deep inequality.
+-// assert.notDeepEqual(actual, expected, message_opt);
+-
+-assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
+-  if (_deepEqual(actual, expected)) {
+-    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
+-  }
++BN.prototype.muln = function muln(num) {
++  return this.clone().imuln(num);
+ };
+ 
+-// 9. The strict equality assertion tests strict equality, as determined by ===.
+-// assert.strictEqual(actual, expected, message_opt);
++// `this` * `this`
++BN.prototype.sqr = function sqr() {
++  return this.mul(this);
++};
+ 
+-assert.strictEqual = function strictEqual(actual, expected, message) {
+-  if (actual !== expected) {
+-    fail(actual, expected, message, '===', assert.strictEqual);
+-  }
++// `this` * `this` in-place
++BN.prototype.isqr = function isqr() {
++  return this.mul(this);
+ };
+ 
+-// 10. The strict non-equality assertion tests for strict inequality, as
+-// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);
++// Shift-left in-place
++BN.prototype.ishln = function ishln(bits) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var r = bits % 26;
++  var s = (bits - r) / 26;
++  var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
+ 
+-assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
+-  if (actual === expected) {
+-    fail(actual, expected, message, '!==', assert.notStrictEqual);
++  if (r !== 0) {
++    var carry = 0;
++    for (var i = 0; i < this.length; i++) {
++      var newCarry = this.words[i] & carryMask;
++      var c = (this.words[i] - newCarry) << r;
++      this.words[i] = c | carry;
++      carry = newCarry >>> (26 - r);
++    }
++    if (carry) {
++      this.words[i] = carry;
++      this.length++;
++    }
+   }
+-};
+ 
+-function expectedException(actual, expected) {
+-  if (!actual || !expected) {
+-    return false;
++  if (s !== 0) {
++    for (var i = this.length - 1; i >= 0; i--)
++      this.words[i + s] = this.words[i];
++    for (var i = 0; i < s; i++)
++      this.words[i] = 0;
++    this.length += s;
+   }
+ 
+-  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
+-    return expected.test(actual);
+-  } else if (actual instanceof expected) {
+-    return true;
+-  } else if (expected.call({}, actual) === true) {
+-    return true;
+-  }
++  return this.strip();
++};
+ 
+-  return false;
+-}
++// Shift-right in-place
++// NOTE: `hint` is a lowest bit before trailing zeroes
++// NOTE: if `extended` is present - it will be filled with destroyed bits
++BN.prototype.ishrn = function ishrn(bits, hint, extended) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var h;
++  if (hint)
++    h = (hint - (hint % 26)) / 26;
++  else
++    h = 0;
+ 
+-function _throws(shouldThrow, block, expected, message) {
+-  var actual;
++  var r = bits % 26;
++  var s = Math.min((bits - r) / 26, this.length);
++  var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
++  var maskedWords = extended;
+ 
+-  if (util.isString(expected)) {
+-    message = expected;
+-    expected = null;
+-  }
++  h -= s;
++  h = Math.max(0, h);
+ 
+-  try {
+-    block();
+-  } catch (e) {
+-    actual = e;
++  // Extended mode, copy masked part
++  if (maskedWords) {
++    for (var i = 0; i < s; i++)
++      maskedWords.words[i] = this.words[i];
++    maskedWords.length = s;
+   }
+ 
+-  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
+-            (message ? ' ' + message : '.');
+-
+-  if (shouldThrow && !actual) {
+-    fail(actual, expected, 'Missing expected exception' + message);
++  if (s === 0) {
++    // No-op, we should not move anything at all
++  } else if (this.length > s) {
++    this.length -= s;
++    for (var i = 0; i < this.length; i++)
++      this.words[i] = this.words[i + s];
++  } else {
++    this.words[0] = 0;
++    this.length = 1;
+   }
+ 
+-  if (!shouldThrow && expectedException(actual, expected)) {
+-    fail(actual, expected, 'Got unwanted exception' + message);
++  var carry = 0;
++  for (var i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
++    var word = this.words[i];
++    this.words[i] = (carry << (26 - r)) | (word >>> r);
++    carry = word & mask;
+   }
+ 
+-  if ((shouldThrow && actual && expected &&
+-      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
+-    throw actual;
++  // Push carried bits as a mask
++  if (maskedWords && carry !== 0)
++    maskedWords.words[maskedWords.length++] = carry;
++
++  if (this.length === 0) {
++    this.words[0] = 0;
++    this.length = 1;
+   }
+-}
+ 
+-// 11. Expected to throw an error:
+-// assert.throws(block, Error_opt, message_opt);
++  this.strip();
+ 
+-assert.throws = function(block, /*optional*/error, /*optional*/message) {
+-  _throws.apply(this, [true].concat(pSlice.call(arguments)));
++  return this;
+ };
+ 
+-// EXTENSION! This is annoying to write outside this module.
+-assert.doesNotThrow = function(block, /*optional*/message) {
+-  _throws.apply(this, [false].concat(pSlice.call(arguments)));
++// Shift-left
++BN.prototype.shln = function shln(bits) {
++  return this.clone().ishln(bits);
+ };
+ 
+-assert.ifError = function(err) { if (err) {throw err;}};
+-
+-var objectKeys = Object.keys || function (obj) {
+-  var keys = [];
+-  for (var key in obj) {
+-    if (hasOwn.call(obj, key)) keys.push(key);
+-  }
+-  return keys;
++// Shift-right
++BN.prototype.shrn = function shrn(bits) {
++  return this.clone().ishrn(bits);
+ };
+ 
+-},{"util/":62}],53:[function(require,module,exports){
+-(function (global){
+-/*!
+- * The buffer module from node.js, for the browser.
+- *
+- * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+- * @license  MIT
+- */
+-/* eslint-disable no-proto */
++// Test if n bit is set
++BN.prototype.testn = function testn(bit) {
++  assert(typeof bit === 'number' && bit >= 0);
++  var r = bit % 26;
++  var s = (bit - r) / 26;
++  var q = 1 << r;
+ 
+-'use strict'
++  // Fast case: bit is much higher than all existing words
++  if (this.length <= s) {
++    return false;
++  }
+ 
+-var base64 = require('base64-js')
+-var ieee754 = require('ieee754')
+-var isArray = require('isarray')
++  // Check bit and return
++  var w = this.words[s];
+ 
+-exports.Buffer = Buffer
+-exports.SlowBuffer = SlowBuffer
+-exports.INSPECT_MAX_BYTES = 50
+-Buffer.poolSize = 8192 // not used by this implementation
++  return !!(w & q);
++};
+ 
+-var rootParent = {}
++// Return only lowers bits of number (in-place)
++BN.prototype.imaskn = function imaskn(bits) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var r = bits % 26;
++  var s = (bits - r) / 26;
+ 
+-/**
+- * If `Buffer.TYPED_ARRAY_SUPPORT`:
+- *   === true    Use Uint8Array implementation (fastest)
+- *   === false   Use Object implementation (most compatible, even IE6)
+- *
+- * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+- * Opera 11.6+, iOS 4.2+.
+- *
+- * Due to various browser bugs, sometimes the Object implementation will be used even
+- * when the browser supports typed arrays.
+- *
+- * Note:
+- *
+- *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
+- *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
+- *
+- *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
+- *
+- *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
+- *     incorrect length in some situations.
++  assert(!this.sign, 'imaskn works only with positive numbers');
+ 
+- * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
+- * get the Object implementation, which is slower but behaves correctly.
+- */
+-Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
+-  ? global.TYPED_ARRAY_SUPPORT
+-  : typedArraySupport()
++  if (r !== 0)
++    s++;
++  this.length = Math.min(s, this.length);
+ 
+-function typedArraySupport () {
+-  try {
+-    var arr = new Uint8Array(1)
+-    arr.foo = function () { return 42 }
+-    return arr.foo() === 42 && // typed array instances can be augmented
+-        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
+-        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
+-  } catch (e) {
+-    return false
++  if (r !== 0) {
++    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
++    this.words[this.length - 1] &= mask;
+   }
+-}
+ 
+-function kMaxLength () {
+-  return Buffer.TYPED_ARRAY_SUPPORT
+-    ? 0x7fffffff
+-    : 0x3fffffff
+-}
++  return this.strip();
++};
+ 
+-/**
+- * The Buffer constructor returns instances of `Uint8Array` that have their
+- * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
+- * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
+- * and the `Uint8Array` methods. Square bracket notation works as expected -- it
+- * returns a single octet.
+- *
+- * The `Uint8Array` prototype remains unmodified.
+- */
+-function Buffer (arg) {
+-  if (!(this instanceof Buffer)) {
+-    // Avoid going through an ArgumentsAdaptorTrampoline in the common case.
+-    if (arguments.length > 1) return new Buffer(arg, arguments[1])
+-    return new Buffer(arg)
+-  }
++// Return only lowers bits of number
++BN.prototype.maskn = function maskn(bits) {
++  return this.clone().imaskn(bits);
++};
+ 
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+-    this.length = 0
+-    this.parent = undefined
+-  }
++// Add plain number `num` to `this`
++BN.prototype.iaddn = function iaddn(num) {
++  assert(typeof num === 'number');
++  if (num < 0)
++    return this.isubn(-num);
+ 
+-  // Common case.
+-  if (typeof arg === 'number') {
+-    return fromNumber(this, arg)
+-  }
++  // Possible sign change
++  if (this.sign) {
++    if (this.length === 1 && this.words[0] < num) {
++      this.words[0] = num - this.words[0];
++      this.sign = false;
++      return this;
++    }
+ 
+-  // Slightly less common case.
+-  if (typeof arg === 'string') {
+-    return fromString(this, arg, arguments.length > 1 ? arguments[1] : 'utf8')
++    this.sign = false;
++    this.isubn(num);
++    this.sign = true;
++    return this;
+   }
+ 
+-  // Unusual.
+-  return fromObject(this, arg)
+-}
++  // Add without checks
++  return this._iaddn(num);
++};
+ 
+-// TODO: Legacy, not needed anymore. Remove in next major version.
+-Buffer._augment = function (arr) {
+-  arr.__proto__ = Buffer.prototype
+-  return arr
+-}
++BN.prototype._iaddn = function _iaddn(num) {
++  this.words[0] += num;
+ 
+-function fromNumber (that, length) {
+-  that = allocate(that, length < 0 ? 0 : checked(length) | 0)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+-    for (var i = 0; i < length; i++) {
+-      that[i] = 0
+-    }
++  // Carry
++  for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
++    this.words[i] -= 0x4000000;
++    if (i === this.length - 1)
++      this.words[i + 1] = 1;
++    else
++      this.words[i + 1]++;
+   }
+-  return that
+-}
+-
+-function fromString (that, string, encoding) {
+-  if (typeof encoding !== 'string' || encoding === '') encoding = 'utf8'
+-
+-  // Assumption: byteLength() return value is always < kMaxLength.
+-  var length = byteLength(string, encoding) | 0
+-  that = allocate(that, length)
+-
+-  that.write(string, encoding)
+-  return that
+-}
++  this.length = Math.max(this.length, i + 1);
+ 
+-function fromObject (that, object) {
+-  if (Buffer.isBuffer(object)) return fromBuffer(that, object)
++  return this;
++};
+ 
+-  if (isArray(object)) return fromArray(that, object)
++// Subtract plain number `num` from `this`
++BN.prototype.isubn = function isubn(num) {
++  assert(typeof num === 'number');
++  if (num < 0)
++    return this.iaddn(-num);
+ 
+-  if (object == null) {
+-    throw new TypeError('must start with number, buffer, array or string')
++  if (this.sign) {
++    this.sign = false;
++    this.iaddn(num);
++    this.sign = true;
++    return this;
+   }
+ 
+-  if (typeof ArrayBuffer !== 'undefined') {
+-    if (object.buffer instanceof ArrayBuffer) {
+-      return fromTypedArray(that, object)
+-    }
+-    if (object instanceof ArrayBuffer) {
+-      return fromArrayBuffer(that, object)
+-    }
++  this.words[0] -= num;
++
++  // Carry
++  for (var i = 0; i < this.length && this.words[i] < 0; i++) {
++    this.words[i] += 0x4000000;
++    this.words[i + 1] -= 1;
+   }
+ 
+-  if (object.length) return fromArrayLike(that, object)
++  return this.strip();
++};
+ 
+-  return fromJsonObject(that, object)
+-}
++BN.prototype.addn = function addn(num) {
++  return this.clone().iaddn(num);
++};
+ 
+-function fromBuffer (that, buffer) {
+-  var length = checked(buffer.length) | 0
+-  that = allocate(that, length)
+-  buffer.copy(that, 0, 0, length)
+-  return that
+-}
++BN.prototype.subn = function subn(num) {
++  return this.clone().isubn(num);
++};
+ 
+-function fromArray (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
+-  }
+-  return that
+-}
++BN.prototype.iabs = function iabs() {
++  this.sign = false;
+ 
+-// Duplicate of fromArray() to keep fromArray() monomorphic.
+-function fromTypedArray (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  // Truncating the elements is probably not what people expect from typed
+-  // arrays with BYTES_PER_ELEMENT > 1 but it's compatible with the behavior
+-  // of the old Buffer constructor.
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
+-  }
+-  return that
+-}
++  return this;
++};
+ 
+-function fromArrayBuffer (that, array) {
+-  array.byteLength // this throws if `array` is not a valid ArrayBuffer
++BN.prototype.abs = function abs() {
++  return this.clone().iabs();
++};
+ 
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    // Return an augmented `Uint8Array` instance, for best performance
+-    that = new Uint8Array(array)
+-    that.__proto__ = Buffer.prototype
++BN.prototype._ishlnsubmul = function _ishlnsubmul(num, mul, shift) {
++  // Bigger storage is needed
++  var len = num.length + shift;
++  var i;
++  if (this.words.length < len) {
++    var t = new Array(len);
++    for (var i = 0; i < this.length; i++)
++      t[i] = this.words[i];
++    this.words = t;
+   } else {
+-    // Fallback: Return an object instance of the Buffer class
+-    that = fromTypedArray(that, new Uint8Array(array))
++    i = this.length;
+   }
+-  return that
+-}
+ 
+-function fromArrayLike (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
++  // Zeroify rest
++  this.length = Math.max(this.length, len);
++  for (; i < this.length; i++)
++    this.words[i] = 0;
++
++  var carry = 0;
++  for (var i = 0; i < num.length; i++) {
++    var w = this.words[i + shift] + carry;
++    var right = num.words[i] * mul;
++    w -= right & 0x3ffffff;
++    carry = (w >> 26) - ((right / 0x4000000) | 0);
++    this.words[i + shift] = w & 0x3ffffff;
++  }
++  for (; i < this.length - shift; i++) {
++    var w = this.words[i + shift] + carry;
++    carry = w >> 26;
++    this.words[i + shift] = w & 0x3ffffff;
+   }
+-  return that
+-}
+ 
+-// Deserialize { type: 'Buffer', data: [1,2,3,...] } into a Buffer object.
+-// Returns a zero-length buffer for inputs that don't conform to the spec.
+-function fromJsonObject (that, object) {
+-  var array
+-  var length = 0
++  if (carry === 0)
++    return this.strip();
+ 
+-  if (object.type === 'Buffer' && isArray(object.data)) {
+-    array = object.data
+-    length = checked(array.length) | 0
++  // Subtraction overflow
++  assert(carry === -1);
++  carry = 0;
++  for (var i = 0; i < this.length; i++) {
++    var w = -this.words[i] + carry;
++    carry = w >> 26;
++    this.words[i] = w & 0x3ffffff;
+   }
+-  that = allocate(that, length)
++  this.sign = true;
+ 
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
+-  }
+-  return that
+-}
++  return this.strip();
++};
+ 
+-if (Buffer.TYPED_ARRAY_SUPPORT) {
+-  Buffer.prototype.__proto__ = Uint8Array.prototype
+-  Buffer.__proto__ = Uint8Array
+-  if (typeof Symbol !== 'undefined' && Symbol.species &&
+-      Buffer[Symbol.species] === Buffer) {
+-    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
+-    Object.defineProperty(Buffer, Symbol.species, {
+-      value: null,
+-      configurable: true
+-    })
+-  }
+-} else {
+-  // pre-set for values that may exist in the future
+-  Buffer.prototype.length = undefined
+-  Buffer.prototype.parent = undefined
+-}
++BN.prototype._wordDiv = function _wordDiv(num, mode) {
++  var shift = this.length - num.length;
+ 
+-function allocate (that, length) {
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    // Return an augmented `Uint8Array` instance, for best performance
+-    that = new Uint8Array(length)
+-    that.__proto__ = Buffer.prototype
+-  } else {
+-    // Fallback: Return an object instance of the Buffer class
+-    that.length = length
++  var a = this.clone();
++  var b = num;
++
++  // Normalize
++  var bhi = b.words[b.length - 1];
++  var bhiBits = this._countBits(bhi);
++  shift = 26 - bhiBits;
++  if (shift !== 0) {
++    b = b.shln(shift);
++    a.ishln(shift);
++    bhi = b.words[b.length - 1];
+   }
+ 
+-  var fromPool = length !== 0 && length <= Buffer.poolSize >>> 1
+-  if (fromPool) that.parent = rootParent
++  // Initialize quotient
++  var m = a.length - b.length;
++  var q;
+ 
+-  return that
+-}
++  if (mode !== 'mod') {
++    q = new BN(null);
++    q.length = m + 1;
++    q.words = new Array(q.length);
++    for (var i = 0; i < q.length; i++)
++      q.words[i] = 0;
++  }
+ 
+-function checked (length) {
+-  // Note: cannot use `length < kMaxLength` here because that fails when
+-  // length is NaN (which is otherwise coerced to zero.)
+-  if (length >= kMaxLength()) {
+-    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+-                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
++  var diff = a.clone()._ishlnsubmul(b, 1, m);
++  if (!diff.sign) {
++    a = diff;
++    if (q)
++      q.words[m] = 1;
+   }
+-  return length | 0
+-}
+ 
+-function SlowBuffer (subject, encoding) {
+-  if (!(this instanceof SlowBuffer)) return new SlowBuffer(subject, encoding)
++  for (var j = m - 1; j >= 0; j--) {
++    var qj = a.words[b.length + j] * 0x4000000 + a.words[b.length + j - 1];
+ 
+-  var buf = new Buffer(subject, encoding)
+-  delete buf.parent
+-  return buf
+-}
++    // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
++    // (0x7ffffff)
++    qj = Math.min((qj / bhi) | 0, 0x3ffffff);
+ 
+-Buffer.isBuffer = function isBuffer (b) {
+-  return !!(b != null && b._isBuffer)
+-}
+-
+-Buffer.compare = function compare (a, b) {
+-  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
+-    throw new TypeError('Arguments must be Buffers')
+-  }
+-
+-  if (a === b) return 0
+-
+-  var x = a.length
+-  var y = b.length
+-
+-  var i = 0
+-  var len = Math.min(x, y)
+-  while (i < len) {
+-    if (a[i] !== b[i]) break
+-
+-    ++i
++    a._ishlnsubmul(b, qj, j);
++    while (a.sign) {
++      qj--;
++      a.sign = false;
++      a._ishlnsubmul(b, 1, j);
++      if (a.cmpn(0) !== 0)
++        a.sign = !a.sign;
++    }
++    if (q)
++      q.words[j] = qj;
+   }
++  if (q)
++    q.strip();
++  a.strip();
+ 
+-  if (i !== len) {
+-    x = a[i]
+-    y = b[i]
+-  }
++  // Denormalize
++  if (mode !== 'div' && shift !== 0)
++    a.ishrn(shift);
++  return { div: q ? q : null, mod: a };
++};
+ 
+-  if (x < y) return -1
+-  if (y < x) return 1
+-  return 0
+-}
++BN.prototype.divmod = function divmod(num, mode) {
++  assert(num.cmpn(0) !== 0);
+ 
+-Buffer.isEncoding = function isEncoding (encoding) {
+-  switch (String(encoding).toLowerCase()) {
+-    case 'hex':
+-    case 'utf8':
+-    case 'utf-8':
+-    case 'ascii':
+-    case 'binary':
+-    case 'base64':
+-    case 'raw':
+-    case 'ucs2':
+-    case 'ucs-2':
+-    case 'utf16le':
+-    case 'utf-16le':
+-      return true
+-    default:
+-      return false
++  if (this.sign && !num.sign) {
++    var res = this.neg().divmod(num, mode);
++    var div;
++    var mod;
++    if (mode !== 'mod')
++      div = res.div.neg();
++    if (mode !== 'div')
++      mod = res.mod.cmpn(0) === 0 ? res.mod : num.sub(res.mod);
++    return {
++      div: div,
++      mod: mod
++    };
++  } else if (!this.sign && num.sign) {
++    var res = this.divmod(num.neg(), mode);
++    var div;
++    if (mode !== 'mod')
++      div = res.div.neg();
++    return { div: div, mod: res.mod };
++  } else if (this.sign && num.sign) {
++    return this.neg().divmod(num.neg(), mode);
+   }
+-}
+ 
+-Buffer.concat = function concat (list, length) {
+-  if (!isArray(list)) throw new TypeError('list argument must be an Array of Buffers.')
++  // Both numbers are positive at this point
+ 
+-  if (list.length === 0) {
+-    return new Buffer(0)
+-  }
++  // Strip both numbers to approximate shift value
++  if (num.length > this.length || this.cmp(num) < 0)
++    return { div: new BN(0), mod: this };
+ 
+-  var i
+-  if (length === undefined) {
+-    length = 0
+-    for (i = 0; i < list.length; i++) {
+-      length += list[i].length
+-    }
++  // Very short reduction
++  if (num.length === 1) {
++    if (mode === 'div')
++      return { div: this.divn(num.words[0]), mod: null };
++    else if (mode === 'mod')
++      return { div: null, mod: new BN(this.modn(num.words[0])) };
++    return {
++      div: this.divn(num.words[0]),
++      mod: new BN(this.modn(num.words[0]))
++    };
+   }
+ 
+-  var buf = new Buffer(length)
+-  var pos = 0
+-  for (i = 0; i < list.length; i++) {
+-    var item = list[i]
+-    item.copy(buf, pos)
+-    pos += item.length
+-  }
+-  return buf
+-}
++  return this._wordDiv(num, mode);
++};
+ 
+-function byteLength (string, encoding) {
+-  if (typeof string !== 'string') string = '' + string
++// Find `this` / `num`
++BN.prototype.div = function div(num) {
++  return this.divmod(num, 'div').div;
++};
+ 
+-  var len = string.length
+-  if (len === 0) return 0
++// Find `this` % `num`
++BN.prototype.mod = function mod(num) {
++  return this.divmod(num, 'mod').mod;
++};
+ 
+-  // Use a for loop to avoid recursion
+-  var loweredCase = false
+-  for (;;) {
+-    switch (encoding) {
+-      case 'ascii':
+-      case 'binary':
+-      // Deprecated
+-      case 'raw':
+-      case 'raws':
+-        return len
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8ToBytes(string).length
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return len * 2
+-      case 'hex':
+-        return len >>> 1
+-      case 'base64':
+-        return base64ToBytes(string).length
+-      default:
+-        if (loweredCase) return utf8ToBytes(string).length // assume utf8
+-        encoding = ('' + encoding).toLowerCase()
+-        loweredCase = true
+-    }
+-  }
+-}
+-Buffer.byteLength = byteLength
++// Find Round(`this` / `num`)
++BN.prototype.divRound = function divRound(num) {
++  var dm = this.divmod(num);
+ 
+-function slowToString (encoding, start, end) {
+-  var loweredCase = false
++  // Fast case - exact division
++  if (dm.mod.cmpn(0) === 0)
++    return dm.div;
+ 
+-  start = start | 0
+-  end = end === undefined || end === Infinity ? this.length : end | 0
++  var mod = dm.div.sign ? dm.mod.isub(num) : dm.mod;
+ 
+-  if (!encoding) encoding = 'utf8'
+-  if (start < 0) start = 0
+-  if (end > this.length) end = this.length
+-  if (end <= start) return ''
++  var half = num.shrn(1);
++  var r2 = num.andln(1);
++  var cmp = mod.cmp(half);
+ 
+-  while (true) {
+-    switch (encoding) {
+-      case 'hex':
+-        return hexSlice(this, start, end)
++  // Round down
++  if (cmp < 0 || r2 === 1 && cmp === 0)
++    return dm.div;
+ 
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8Slice(this, start, end)
++  // Round up
++  return dm.div.sign ? dm.div.isubn(1) : dm.div.iaddn(1);
++};
+ 
+-      case 'ascii':
+-        return asciiSlice(this, start, end)
++BN.prototype.modn = function modn(num) {
++  assert(num <= 0x3ffffff);
++  var p = (1 << 26) % num;
+ 
+-      case 'binary':
+-        return binarySlice(this, start, end)
++  var acc = 0;
++  for (var i = this.length - 1; i >= 0; i--)
++    acc = (p * acc + this.words[i]) % num;
+ 
+-      case 'base64':
+-        return base64Slice(this, start, end)
++  return acc;
++};
+ 
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return utf16leSlice(this, start, end)
++// In-place division by number
++BN.prototype.idivn = function idivn(num) {
++  assert(num <= 0x3ffffff);
+ 
+-      default:
+-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+-        encoding = (encoding + '').toLowerCase()
+-        loweredCase = true
+-    }
++  var carry = 0;
++  for (var i = this.length - 1; i >= 0; i--) {
++    var w = this.words[i] + carry * 0x4000000;
++    this.words[i] = (w / num) | 0;
++    carry = w % num;
+   }
+-}
+ 
+-// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
+-// Buffer instances.
+-Buffer.prototype._isBuffer = true
++  return this.strip();
++};
+ 
+-Buffer.prototype.toString = function toString () {
+-  var length = this.length | 0
+-  if (length === 0) return ''
+-  if (arguments.length === 0) return utf8Slice(this, 0, length)
+-  return slowToString.apply(this, arguments)
+-}
++BN.prototype.divn = function divn(num) {
++  return this.clone().idivn(num);
++};
+ 
+-Buffer.prototype.equals = function equals (b) {
+-  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+-  if (this === b) return true
+-  return Buffer.compare(this, b) === 0
+-}
++BN.prototype.egcd = function egcd(p) {
++  assert(!p.sign);
++  assert(p.cmpn(0) !== 0);
+ 
+-Buffer.prototype.inspect = function inspect () {
+-  var str = ''
+-  var max = exports.INSPECT_MAX_BYTES
+-  if (this.length > 0) {
+-    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
+-    if (this.length > max) str += ' ... '
+-  }
+-  return '<Buffer ' + str + '>'
+-}
++  var x = this;
++  var y = p.clone();
+ 
+-Buffer.prototype.compare = function compare (b) {
+-  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+-  if (this === b) return 0
+-  return Buffer.compare(this, b)
+-}
++  if (x.sign)
++    x = x.mod(p);
++  else
++    x = x.clone();
+ 
+-Buffer.prototype.indexOf = function indexOf (val, byteOffset) {
+-  if (byteOffset > 0x7fffffff) byteOffset = 0x7fffffff
+-  else if (byteOffset < -0x80000000) byteOffset = -0x80000000
+-  byteOffset >>= 0
++  // A * x + B * y = x
++  var A = new BN(1);
++  var B = new BN(0);
+ 
+-  if (this.length === 0) return -1
+-  if (byteOffset >= this.length) return -1
++  // C * x + D * y = y
++  var C = new BN(0);
++  var D = new BN(1);
+ 
+-  // Negative offsets start from the end of the buffer
+-  if (byteOffset < 0) byteOffset = Math.max(this.length + byteOffset, 0)
++  var g = 0;
+ 
+-  if (typeof val === 'string') {
+-    if (val.length === 0) return -1 // special case: looking for empty string always fails
+-    return String.prototype.indexOf.call(this, val, byteOffset)
+-  }
+-  if (Buffer.isBuffer(val)) {
+-    return arrayIndexOf(this, val, byteOffset)
+-  }
+-  if (typeof val === 'number') {
+-    if (Buffer.TYPED_ARRAY_SUPPORT && Uint8Array.prototype.indexOf === 'function') {
+-      return Uint8Array.prototype.indexOf.call(this, val, byteOffset)
+-    }
+-    return arrayIndexOf(this, [ val ], byteOffset)
++  while (x.isEven() && y.isEven()) {
++    x.ishrn(1);
++    y.ishrn(1);
++    ++g;
+   }
+ 
+-  function arrayIndexOf (arr, val, byteOffset) {
+-    var foundIndex = -1
+-    for (var i = 0; byteOffset + i < arr.length; i++) {
+-      if (arr[byteOffset + i] === val[foundIndex === -1 ? 0 : i - foundIndex]) {
+-        if (foundIndex === -1) foundIndex = i
+-        if (i - foundIndex + 1 === val.length) return byteOffset + foundIndex
++  var yp = y.clone();
++  var xp = x.clone();
++
++  while (x.cmpn(0) !== 0) {
++    while (x.isEven()) {
++      x.ishrn(1);
++      if (A.isEven() && B.isEven()) {
++        A.ishrn(1);
++        B.ishrn(1);
+       } else {
+-        foundIndex = -1
++        A.iadd(yp).ishrn(1);
++        B.isub(xp).ishrn(1);
+       }
+     }
+-    return -1
+-  }
+ 
+-  throw new TypeError('val must be string, number or Buffer')
+-}
++    while (y.isEven()) {
++      y.ishrn(1);
++      if (C.isEven() && D.isEven()) {
++        C.ishrn(1);
++        D.ishrn(1);
++      } else {
++        C.iadd(yp).ishrn(1);
++        D.isub(xp).ishrn(1);
++      }
++    }
+ 
+-function hexWrite (buf, string, offset, length) {
+-  offset = Number(offset) || 0
+-  var remaining = buf.length - offset
+-  if (!length) {
+-    length = remaining
+-  } else {
+-    length = Number(length)
+-    if (length > remaining) {
+-      length = remaining
++    if (x.cmp(y) >= 0) {
++      x.isub(y);
++      A.isub(C);
++      B.isub(D);
++    } else {
++      y.isub(x);
++      C.isub(A);
++      D.isub(B);
+     }
+   }
+ 
+-  // must be an even number of digits
+-  var strLen = string.length
+-  if (strLen % 2 !== 0) throw new Error('Invalid hex string')
+-
+-  if (length > strLen / 2) {
+-    length = strLen / 2
+-  }
+-  for (var i = 0; i < length; i++) {
+-    var parsed = parseInt(string.substr(i * 2, 2), 16)
+-    if (isNaN(parsed)) throw new Error('Invalid hex string')
+-    buf[offset + i] = parsed
+-  }
+-  return i
+-}
++  return {
++    a: C,
++    b: D,
++    gcd: y.ishln(g)
++  };
++};
+ 
+-function utf8Write (buf, string, offset, length) {
+-  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+-}
++// This is reduced incarnation of the binary EEA
++// above, designated to invert members of the
++// _prime_ fields F(p) at a maximal speed
++BN.prototype._invmp = function _invmp(p) {
++  assert(!p.sign);
++  assert(p.cmpn(0) !== 0);
+ 
+-function asciiWrite (buf, string, offset, length) {
+-  return blitBuffer(asciiToBytes(string), buf, offset, length)
+-}
++  var a = this;
++  var b = p.clone();
+ 
+-function binaryWrite (buf, string, offset, length) {
+-  return asciiWrite(buf, string, offset, length)
+-}
++  if (a.sign)
++    a = a.mod(p);
++  else
++    a = a.clone();
+ 
+-function base64Write (buf, string, offset, length) {
+-  return blitBuffer(base64ToBytes(string), buf, offset, length)
+-}
++  var x1 = new BN(1);
++  var x2 = new BN(0);
+ 
+-function ucs2Write (buf, string, offset, length) {
+-  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+-}
++  var delta = b.clone();
+ 
+-Buffer.prototype.write = function write (string, offset, length, encoding) {
+-  // Buffer#write(string)
+-  if (offset === undefined) {
+-    encoding = 'utf8'
+-    length = this.length
+-    offset = 0
+-  // Buffer#write(string, encoding)
+-  } else if (length === undefined && typeof offset === 'string') {
+-    encoding = offset
+-    length = this.length
+-    offset = 0
+-  // Buffer#write(string, offset[, length][, encoding])
+-  } else if (isFinite(offset)) {
+-    offset = offset | 0
+-    if (isFinite(length)) {
+-      length = length | 0
+-      if (encoding === undefined) encoding = 'utf8'
++  while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
++    while (a.isEven()) {
++      a.ishrn(1);
++      if (x1.isEven())
++        x1.ishrn(1);
++      else
++        x1.iadd(delta).ishrn(1);
++    }
++    while (b.isEven()) {
++      b.ishrn(1);
++      if (x2.isEven())
++        x2.ishrn(1);
++      else
++        x2.iadd(delta).ishrn(1);
++    }
++    if (a.cmp(b) >= 0) {
++      a.isub(b);
++      x1.isub(x2);
+     } else {
+-      encoding = length
+-      length = undefined
++      b.isub(a);
++      x2.isub(x1);
+     }
+-  // legacy write(string, encoding, offset, length) - remove in v0.13
+-  } else {
+-    var swap = encoding
+-    encoding = offset
+-    offset = length | 0
+-    length = swap
+   }
++  if (a.cmpn(1) === 0)
++    return x1;
++  else
++    return x2;
++};
+ 
+-  var remaining = this.length - offset
+-  if (length === undefined || length > remaining) length = remaining
++BN.prototype.gcd = function gcd(num) {
++  if (this.cmpn(0) === 0)
++    return num.clone();
++  if (num.cmpn(0) === 0)
++    return this.clone();
+ 
+-  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
+-    throw new RangeError('attempt to write outside buffer bounds')
++  var a = this.clone();
++  var b = num.clone();
++  a.sign = false;
++  b.sign = false;
++
++  // Remove common factor of two
++  for (var shift = 0; a.isEven() && b.isEven(); shift++) {
++    a.ishrn(1);
++    b.ishrn(1);
+   }
+ 
+-  if (!encoding) encoding = 'utf8'
++  do {
++    while (a.isEven())
++      a.ishrn(1);
++    while (b.isEven())
++      b.ishrn(1);
+ 
+-  var loweredCase = false
+-  for (;;) {
+-    switch (encoding) {
+-      case 'hex':
+-        return hexWrite(this, string, offset, length)
++    var r = a.cmp(b);
++    if (r < 0) {
++      // Swap `a` and `b` to make `a` always bigger than `b`
++      var t = a;
++      a = b;
++      b = t;
++    } else if (r === 0 || b.cmpn(1) === 0) {
++      break;
++    }
+ 
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8Write(this, string, offset, length)
++    a.isub(b);
++  } while (true);
+ 
+-      case 'ascii':
+-        return asciiWrite(this, string, offset, length)
++  return b.ishln(shift);
++};
+ 
+-      case 'binary':
+-        return binaryWrite(this, string, offset, length)
++// Invert number in the field F(num)
++BN.prototype.invm = function invm(num) {
++  return this.egcd(num).a.mod(num);
++};
+ 
+-      case 'base64':
+-        // Warning: maxLength not taken into account in base64Write
+-        return base64Write(this, string, offset, length)
++BN.prototype.isEven = function isEven() {
++  return (this.words[0] & 1) === 0;
++};
+ 
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return ucs2Write(this, string, offset, length)
++BN.prototype.isOdd = function isOdd() {
++  return (this.words[0] & 1) === 1;
++};
+ 
+-      default:
+-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+-        encoding = ('' + encoding).toLowerCase()
+-        loweredCase = true
+-    }
+-  }
+-}
++// And first word and num
++BN.prototype.andln = function andln(num) {
++  return this.words[0] & num;
++};
+ 
+-Buffer.prototype.toJSON = function toJSON () {
+-  return {
+-    type: 'Buffer',
+-    data: Array.prototype.slice.call(this._arr || this, 0)
+-  }
+-}
++// Increment at the bit position in-line
++BN.prototype.bincn = function bincn(bit) {
++  assert(typeof bit === 'number');
++  var r = bit % 26;
++  var s = (bit - r) / 26;
++  var q = 1 << r;
+ 
+-function base64Slice (buf, start, end) {
+-  if (start === 0 && end === buf.length) {
+-    return base64.fromByteArray(buf)
+-  } else {
+-    return base64.fromByteArray(buf.slice(start, end))
++  // Fast case: bit is much higher than all existing words
++  if (this.length <= s) {
++    for (var i = this.length; i < s + 1; i++)
++      this.words[i] = 0;
++    this.words[s] |= q;
++    this.length = s + 1;
++    return this;
+   }
+-}
+-
+-function utf8Slice (buf, start, end) {
+-  end = Math.min(buf.length, end)
+-  var res = []
+-
+-  var i = start
+-  while (i < end) {
+-    var firstByte = buf[i]
+-    var codePoint = null
+-    var bytesPerSequence = (firstByte > 0xEF) ? 4
+-      : (firstByte > 0xDF) ? 3
+-      : (firstByte > 0xBF) ? 2
+-      : 1
+ 
+-    if (i + bytesPerSequence <= end) {
+-      var secondByte, thirdByte, fourthByte, tempCodePoint
++  // Add bit and propagate, if needed
++  var carry = q;
++  for (var i = s; carry !== 0 && i < this.length; i++) {
++    var w = this.words[i];
++    w += carry;
++    carry = w >>> 26;
++    w &= 0x3ffffff;
++    this.words[i] = w;
++  }
++  if (carry !== 0) {
++    this.words[i] = carry;
++    this.length++;
++  }
++  return this;
++};
+ 
+-      switch (bytesPerSequence) {
+-        case 1:
+-          if (firstByte < 0x80) {
+-            codePoint = firstByte
+-          }
+-          break
+-        case 2:
+-          secondByte = buf[i + 1]
+-          if ((secondByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
+-            if (tempCodePoint > 0x7F) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-          break
+-        case 3:
+-          secondByte = buf[i + 1]
+-          thirdByte = buf[i + 2]
+-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
+-            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-          break
+-        case 4:
+-          secondByte = buf[i + 1]
+-          thirdByte = buf[i + 2]
+-          fourthByte = buf[i + 3]
+-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
+-            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-      }
+-    }
++BN.prototype.cmpn = function cmpn(num) {
++  var sign = num < 0;
++  if (sign)
++    num = -num;
+ 
+-    if (codePoint === null) {
+-      // we did not generate a valid codePoint so insert a
+-      // replacement char (U+FFFD) and advance only 1 byte
+-      codePoint = 0xFFFD
+-      bytesPerSequence = 1
+-    } else if (codePoint > 0xFFFF) {
+-      // encode to utf16 (surrogate pair dance)
+-      codePoint -= 0x10000
+-      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
+-      codePoint = 0xDC00 | codePoint & 0x3FF
+-    }
++  if (this.sign && !sign)
++    return -1;
++  else if (!this.sign && sign)
++    return 1;
+ 
+-    res.push(codePoint)
+-    i += bytesPerSequence
++  num &= 0x3ffffff;
++  this.strip();
++
++  var res;
++  if (this.length > 1) {
++    res = 1;
++  } else {
++    var w = this.words[0];
++    res = w === num ? 0 : w < num ? -1 : 1;
+   }
++  if (this.sign)
++    res = -res;
++  return res;
++};
+ 
+-  return decodeCodePointsArray(res)
+-}
++// Compare two numbers and return:
++// 1 - if `this` > `num`
++// 0 - if `this` == `num`
++// -1 - if `this` < `num`
++BN.prototype.cmp = function cmp(num) {
++  if (this.sign && !num.sign)
++    return -1;
++  else if (!this.sign && num.sign)
++    return 1;
+ 
+-// Based on http://stackoverflow.com/a/22747272/680742, the browser with
+-// the lowest limit is Chrome, with 0x10000 args.
+-// We go 1 magnitude less, for safety
+-var MAX_ARGUMENTS_LENGTH = 0x1000
++  var res = this.ucmp(num);
++  if (this.sign)
++    return -res;
++  else
++    return res;
++};
+ 
+-function decodeCodePointsArray (codePoints) {
+-  var len = codePoints.length
+-  if (len <= MAX_ARGUMENTS_LENGTH) {
+-    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+-  }
++// Unsigned comparison
++BN.prototype.ucmp = function ucmp(num) {
++  // At this point both numbers have the same sign
++  if (this.length > num.length)
++    return 1;
++  else if (this.length < num.length)
++    return -1;
+ 
+-  // Decode in chunks to avoid "call stack size exceeded".
+-  var res = ''
+-  var i = 0
+-  while (i < len) {
+-    res += String.fromCharCode.apply(
+-      String,
+-      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
+-    )
++  var res = 0;
++  for (var i = this.length - 1; i >= 0; i--) {
++    var a = this.words[i];
++    var b = num.words[i];
++
++    if (a === b)
++      continue;
++    if (a < b)
++      res = -1;
++    else if (a > b)
++      res = 1;
++    break;
+   }
+-  return res
+-}
++  return res;
++};
+ 
+-function asciiSlice (buf, start, end) {
+-  var ret = ''
+-  end = Math.min(buf.length, end)
++//
++// A reduce context, could be using montgomery or something better, depending
++// on the `m` itself.
++//
++BN.red = function red(num) {
++  return new Red(num);
++};
+ 
+-  for (var i = start; i < end; i++) {
+-    ret += String.fromCharCode(buf[i] & 0x7F)
+-  }
+-  return ret
+-}
++BN.prototype.toRed = function toRed(ctx) {
++  assert(!this.red, 'Already a number in reduction context');
++  assert(!this.sign, 'red works only with positives');
++  return ctx.convertTo(this)._forceRed(ctx);
++};
+ 
+-function binarySlice (buf, start, end) {
+-  var ret = ''
+-  end = Math.min(buf.length, end)
++BN.prototype.fromRed = function fromRed() {
++  assert(this.red, 'fromRed works only with numbers in reduction context');
++  return this.red.convertFrom(this);
++};
+ 
+-  for (var i = start; i < end; i++) {
+-    ret += String.fromCharCode(buf[i])
+-  }
+-  return ret
+-}
++BN.prototype._forceRed = function _forceRed(ctx) {
++  this.red = ctx;
++  return this;
++};
+ 
+-function hexSlice (buf, start, end) {
+-  var len = buf.length
++BN.prototype.forceRed = function forceRed(ctx) {
++  assert(!this.red, 'Already a number in reduction context');
++  return this._forceRed(ctx);
++};
+ 
+-  if (!start || start < 0) start = 0
+-  if (!end || end < 0 || end > len) end = len
++BN.prototype.redAdd = function redAdd(num) {
++  assert(this.red, 'redAdd works only with red numbers');
++  return this.red.add(this, num);
++};
+ 
+-  var out = ''
+-  for (var i = start; i < end; i++) {
+-    out += toHex(buf[i])
+-  }
+-  return out
+-}
++BN.prototype.redIAdd = function redIAdd(num) {
++  assert(this.red, 'redIAdd works only with red numbers');
++  return this.red.iadd(this, num);
++};
+ 
+-function utf16leSlice (buf, start, end) {
+-  var bytes = buf.slice(start, end)
+-  var res = ''
+-  for (var i = 0; i < bytes.length; i += 2) {
+-    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
+-  }
+-  return res
+-}
++BN.prototype.redSub = function redSub(num) {
++  assert(this.red, 'redSub works only with red numbers');
++  return this.red.sub(this, num);
++};
+ 
+-Buffer.prototype.slice = function slice (start, end) {
+-  var len = this.length
+-  start = ~~start
+-  end = end === undefined ? len : ~~end
++BN.prototype.redISub = function redISub(num) {
++  assert(this.red, 'redISub works only with red numbers');
++  return this.red.isub(this, num);
++};
+ 
+-  if (start < 0) {
+-    start += len
+-    if (start < 0) start = 0
+-  } else if (start > len) {
+-    start = len
+-  }
++BN.prototype.redShl = function redShl(num) {
++  assert(this.red, 'redShl works only with red numbers');
++  return this.red.shl(this, num);
++};
+ 
+-  if (end < 0) {
+-    end += len
+-    if (end < 0) end = 0
+-  } else if (end > len) {
+-    end = len
+-  }
++BN.prototype.redMul = function redMul(num) {
++  assert(this.red, 'redMul works only with red numbers');
++  this.red._verify2(this, num);
++  return this.red.mul(this, num);
++};
+ 
+-  if (end < start) end = start
++BN.prototype.redIMul = function redIMul(num) {
++  assert(this.red, 'redMul works only with red numbers');
++  this.red._verify2(this, num);
++  return this.red.imul(this, num);
++};
+ 
+-  var newBuf
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    newBuf = this.subarray(start, end)
+-    newBuf.__proto__ = Buffer.prototype
+-  } else {
+-    var sliceLen = end - start
+-    newBuf = new Buffer(sliceLen, undefined)
+-    for (var i = 0; i < sliceLen; i++) {
+-      newBuf[i] = this[i + start]
+-    }
+-  }
++BN.prototype.redSqr = function redSqr() {
++  assert(this.red, 'redSqr works only with red numbers');
++  this.red._verify1(this);
++  return this.red.sqr(this);
++};
+ 
+-  if (newBuf.length) newBuf.parent = this.parent || this
++BN.prototype.redISqr = function redISqr() {
++  assert(this.red, 'redISqr works only with red numbers');
++  this.red._verify1(this);
++  return this.red.isqr(this);
++};
+ 
+-  return newBuf
+-}
++// Square root over p
++BN.prototype.redSqrt = function redSqrt() {
++  assert(this.red, 'redSqrt works only with red numbers');
++  this.red._verify1(this);
++  return this.red.sqrt(this);
++};
+ 
+-/*
+- * Need to make sure that buffer isn't trying to write out of bounds.
+- */
+-function checkOffset (offset, ext, length) {
+-  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+-  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+-}
++BN.prototype.redInvm = function redInvm() {
++  assert(this.red, 'redInvm works only with red numbers');
++  this.red._verify1(this);
++  return this.red.invm(this);
++};
+ 
+-Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
++// Return negative clone of `this` % `red modulo`
++BN.prototype.redNeg = function redNeg() {
++  assert(this.red, 'redNeg works only with red numbers');
++  this.red._verify1(this);
++  return this.red.neg(this);
++};
+ 
+-  var val = this[offset]
+-  var mul = 1
+-  var i = 0
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    val += this[offset + i] * mul
+-  }
++BN.prototype.redPow = function redPow(num) {
++  assert(this.red && !num.red, 'redPow(normalNum)');
++  this.red._verify1(this);
++  return this.red.pow(this, num);
++};
+ 
+-  return val
++// Prime numbers with efficient reduction
++var primes = {
++  k256: null,
++  p224: null,
++  p192: null,
++  p25519: null
++};
++
++// Pseudo-Mersenne prime
++function MPrime(name, p) {
++  // P = 2 ^ N - K
++  this.name = name;
++  this.p = new BN(p, 16);
++  this.n = this.p.bitLength();
++  this.k = new BN(1).ishln(this.n).isub(this.p);
++
++  this.tmp = this._tmp();
+ }
+ 
+-Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) {
+-    checkOffset(offset, byteLength, this.length)
+-  }
++MPrime.prototype._tmp = function _tmp() {
++  var tmp = new BN(null);
++  tmp.words = new Array(Math.ceil(this.n / 13));
++  return tmp;
++};
+ 
+-  var val = this[offset + --byteLength]
+-  var mul = 1
+-  while (byteLength > 0 && (mul *= 0x100)) {
+-    val += this[offset + --byteLength] * mul
+-  }
++MPrime.prototype.ireduce = function ireduce(num) {
++  // Assumes that `num` is less than `P^2`
++  // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
++  var r = num;
++  var rlen;
+ 
+-  return val
+-}
++  do {
++    this.split(r, this.tmp);
++    r = this.imulK(r);
++    r = r.iadd(this.tmp);
++    rlen = r.bitLength();
++  } while (rlen > this.n);
+ 
+-Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 1, this.length)
+-  return this[offset]
+-}
++  var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
++  if (cmp === 0) {
++    r.words[0] = 0;
++    r.length = 1;
++  } else if (cmp > 0) {
++    r.isub(this.p);
++  } else {
++    r.strip();
++  }
+ 
+-Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  return this[offset] | (this[offset + 1] << 8)
+-}
++  return r;
++};
+ 
+-Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  return (this[offset] << 8) | this[offset + 1]
+-}
++MPrime.prototype.split = function split(input, out) {
++  input.ishrn(this.n, 0, out);
++};
+ 
+-Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
++MPrime.prototype.imulK = function imulK(num) {
++  return num.imul(this.k);
++};
+ 
+-  return ((this[offset]) |
+-      (this[offset + 1] << 8) |
+-      (this[offset + 2] << 16)) +
+-      (this[offset + 3] * 0x1000000)
++function K256() {
++  MPrime.call(
++    this,
++    'k256',
++    'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
+ }
++inherits(K256, MPrime);
+ 
+-Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
++K256.prototype.split = function split(input, output) {
++  // 256 = 9 * 26 + 22
++  var mask = 0x3fffff;
+ 
+-  return (this[offset] * 0x1000000) +
+-    ((this[offset + 1] << 16) |
+-    (this[offset + 2] << 8) |
+-    this[offset + 3])
+-}
++  var outLen = Math.min(input.length, 9);
++  for (var i = 0; i < outLen; i++)
++    output.words[i] = input.words[i];
++  output.length = outLen;
+ 
+-Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
++  if (input.length <= 9) {
++    input.words[0] = 0;
++    input.length = 1;
++    return;
++  }
+ 
+-  var val = this[offset]
+-  var mul = 1
+-  var i = 0
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    val += this[offset + i] * mul
++  // Shift by 9 limbs
++  var prev = input.words[9];
++  output.words[output.length++] = prev & mask;
++
++  for (var i = 10; i < input.length; i++) {
++    var next = input.words[i];
++    input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
++    prev = next;
+   }
+-  mul *= 0x80
++  input.words[i - 10] = prev >>> 22;
++  input.length -= 9;
++};
+ 
+-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
++K256.prototype.imulK = function imulK(num) {
++  // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
++  num.words[num.length] = 0;
++  num.words[num.length + 1] = 0;
++  num.length += 2;
+ 
+-  return val
+-}
++  // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
++  var hi;
++  var lo = 0;
++  for (var i = 0; i < num.length; i++) {
++    var w = num.words[i];
++    hi = w * 0x40;
++    lo += w * 0x3d1;
++    hi += (lo / 0x4000000) | 0;
++    lo &= 0x3ffffff;
+ 
+-Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
++    num.words[i] = lo;
+ 
+-  var i = byteLength
+-  var mul = 1
+-  var val = this[offset + --i]
+-  while (i > 0 && (mul *= 0x100)) {
+-    val += this[offset + --i] * mul
++    lo = hi;
+   }
+-  mul *= 0x80
+ 
+-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+-
+-  return val
+-}
++  // Fast length reduction
++  if (num.words[num.length - 1] === 0) {
++    num.length--;
++    if (num.words[num.length - 1] === 0)
++      num.length--;
++  }
++  return num;
++};
+ 
+-Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 1, this.length)
+-  if (!(this[offset] & 0x80)) return (this[offset])
+-  return ((0xff - this[offset] + 1) * -1)
++function P224() {
++  MPrime.call(
++    this,
++    'p224',
++    'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
+ }
++inherits(P224, MPrime);
+ 
+-Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  var val = this[offset] | (this[offset + 1] << 8)
+-  return (val & 0x8000) ? val | 0xFFFF0000 : val
++function P192() {
++  MPrime.call(
++    this,
++    'p192',
++    'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
+ }
++inherits(P192, MPrime);
+ 
+-Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  var val = this[offset + 1] | (this[offset] << 8)
+-  return (val & 0x8000) ? val | 0xFFFF0000 : val
++function P25519() {
++  // 2 ^ 255 - 19
++  MPrime.call(
++    this,
++    '25519',
++    '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
+ }
++inherits(P25519, MPrime);
+ 
+-Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-
+-  return (this[offset]) |
+-    (this[offset + 1] << 8) |
+-    (this[offset + 2] << 16) |
+-    (this[offset + 3] << 24)
+-}
+-
+-Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-
+-  return (this[offset] << 24) |
+-    (this[offset + 1] << 16) |
+-    (this[offset + 2] << 8) |
+-    (this[offset + 3])
+-}
+-
+-Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-  return ieee754.read(this, offset, true, 23, 4)
+-}
+-
+-Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-  return ieee754.read(this, offset, false, 23, 4)
+-}
++P25519.prototype.imulK = function imulK(num) {
++  // K = 0x13
++  var carry = 0;
++  for (var i = 0; i < num.length; i++) {
++    var hi = num.words[i] * 0x13 + carry;
++    var lo = hi & 0x3ffffff;
++    hi >>>= 26;
+ 
+-Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 8, this.length)
+-  return ieee754.read(this, offset, true, 52, 8)
+-}
++    num.words[i] = lo;
++    carry = hi;
++  }
++  if (carry !== 0)
++    num.words[num.length++] = carry;
++  return num;
++};
+ 
+-Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 8, this.length)
+-  return ieee754.read(this, offset, false, 52, 8)
+-}
++// Exported mostly for testing purposes, use plain name instead
++BN._prime = function prime(name) {
++  // Cached version of prime
++  if (primes[name])
++    return primes[name];
+ 
+-function checkInt (buf, value, offset, ext, max, min) {
+-  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
+-  if (value > max || value < min) throw new RangeError('value is out of bounds')
+-  if (offset + ext > buf.length) throw new RangeError('index out of range')
+-}
++  var prime;
++  if (name === 'k256')
++    prime = new K256();
++  else if (name === 'p224')
++    prime = new P224();
++  else if (name === 'p192')
++    prime = new P192();
++  else if (name === 'p25519')
++    prime = new P25519();
++  else
++    throw new Error('Unknown prime ' + name);
++  primes[name] = prime;
+ 
+-Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
++  return prime;
++};
+ 
+-  var mul = 1
+-  var i = 0
+-  this[offset] = value & 0xFF
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    this[offset + i] = (value / mul) & 0xFF
++//
++// Base reduction engine
++//
++function Red(m) {
++  if (typeof m === 'string') {
++    var prime = BN._prime(m);
++    this.m = prime.p;
++    this.prime = prime;
++  } else {
++    this.m = m;
++    this.prime = null;
+   }
+-
+-  return offset + byteLength
+ }
+ 
+-Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
++Red.prototype._verify1 = function _verify1(a) {
++  assert(!a.sign, 'red works only with positives');
++  assert(a.red, 'red works only with red numbers');
++};
+ 
+-  var i = byteLength - 1
+-  var mul = 1
+-  this[offset + i] = value & 0xFF
+-  while (--i >= 0 && (mul *= 0x100)) {
+-    this[offset + i] = (value / mul) & 0xFF
+-  }
++Red.prototype._verify2 = function _verify2(a, b) {
++  assert(!a.sign && !b.sign, 'red works only with positives');
++  assert(a.red && a.red === b.red,
++         'red works only with red numbers');
++};
+ 
+-  return offset + byteLength
+-}
++Red.prototype.imod = function imod(a) {
++  if (this.prime)
++    return this.prime.ireduce(a)._forceRed(this);
++  return a.mod(this.m)._forceRed(this);
++};
+ 
+-Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+-  this[offset] = (value & 0xff)
+-  return offset + 1
+-}
++Red.prototype.neg = function neg(a) {
++  var r = a.clone();
++  r.sign = !r.sign;
++  return r.iadd(this.m)._forceRed(this);
++};
+ 
+-function objectWriteUInt16 (buf, value, offset, littleEndian) {
+-  if (value < 0) value = 0xffff + value + 1
+-  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
+-    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
+-      (littleEndian ? i : 1 - i) * 8
+-  }
+-}
++Red.prototype.add = function add(a, b) {
++  this._verify2(a, b);
+ 
+-Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
+-  } else {
+-    objectWriteUInt16(this, value, offset, true)
+-  }
+-  return offset + 2
+-}
++  var res = a.add(b);
++  if (res.cmp(this.m) >= 0)
++    res.isub(this.m);
++  return res._forceRed(this);
++};
+ 
+-Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 8)
+-    this[offset + 1] = (value & 0xff)
+-  } else {
+-    objectWriteUInt16(this, value, offset, false)
+-  }
+-  return offset + 2
+-}
++Red.prototype.iadd = function iadd(a, b) {
++  this._verify2(a, b);
+ 
+-function objectWriteUInt32 (buf, value, offset, littleEndian) {
+-  if (value < 0) value = 0xffffffff + value + 1
+-  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
+-    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
+-  }
+-}
++  var res = a.iadd(b);
++  if (res.cmp(this.m) >= 0)
++    res.isub(this.m);
++  return res;
++};
+ 
+-Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset + 3] = (value >>> 24)
+-    this[offset + 2] = (value >>> 16)
+-    this[offset + 1] = (value >>> 8)
+-    this[offset] = (value & 0xff)
+-  } else {
+-    objectWriteUInt32(this, value, offset, true)
+-  }
+-  return offset + 4
+-}
++Red.prototype.sub = function sub(a, b) {
++  this._verify2(a, b);
+ 
+-Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 24)
+-    this[offset + 1] = (value >>> 16)
+-    this[offset + 2] = (value >>> 8)
+-    this[offset + 3] = (value & 0xff)
+-  } else {
+-    objectWriteUInt32(this, value, offset, false)
+-  }
+-  return offset + 4
+-}
++  var res = a.sub(b);
++  if (res.cmpn(0) < 0)
++    res.iadd(this.m);
++  return res._forceRed(this);
++};
+ 
+-Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) {
+-    var limit = Math.pow(2, 8 * byteLength - 1)
++Red.prototype.isub = function isub(a, b) {
++  this._verify2(a, b);
+ 
+-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+-  }
++  var res = a.isub(b);
++  if (res.cmpn(0) < 0)
++    res.iadd(this.m);
++  return res;
++};
+ 
+-  var i = 0
+-  var mul = 1
+-  var sub = value < 0 ? 1 : 0
+-  this[offset] = value & 0xFF
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+-  }
++Red.prototype.shl = function shl(a, num) {
++  this._verify1(a);
++  return this.imod(a.shln(num));
++};
+ 
+-  return offset + byteLength
+-}
++Red.prototype.imul = function imul(a, b) {
++  this._verify2(a, b);
++  return this.imod(a.imul(b));
++};
+ 
+-Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) {
+-    var limit = Math.pow(2, 8 * byteLength - 1)
++Red.prototype.mul = function mul(a, b) {
++  this._verify2(a, b);
++  return this.imod(a.mul(b));
++};
+ 
+-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+-  }
++Red.prototype.isqr = function isqr(a) {
++  return this.imul(a, a);
++};
+ 
+-  var i = byteLength - 1
+-  var mul = 1
+-  var sub = value < 0 ? 1 : 0
+-  this[offset + i] = value & 0xFF
+-  while (--i >= 0 && (mul *= 0x100)) {
+-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+-  }
++Red.prototype.sqr = function sqr(a) {
++  return this.mul(a, a);
++};
+ 
+-  return offset + byteLength
+-}
++Red.prototype.sqrt = function sqrt(a) {
++  if (a.cmpn(0) === 0)
++    return a.clone();
+ 
+-Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+-  if (value < 0) value = 0xff + value + 1
+-  this[offset] = (value & 0xff)
+-  return offset + 1
+-}
++  var mod3 = this.m.andln(3);
++  assert(mod3 % 2 === 1);
+ 
+-Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
+-  } else {
+-    objectWriteUInt16(this, value, offset, true)
++  // Fast case
++  if (mod3 === 3) {
++    var pow = this.m.add(new BN(1)).ishrn(2);
++    var r = this.pow(a, pow);
++    return r;
+   }
+-  return offset + 2
+-}
+ 
+-Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 8)
+-    this[offset + 1] = (value & 0xff)
+-  } else {
+-    objectWriteUInt16(this, value, offset, false)
++  // Tonelli-Shanks algorithm (Totally unoptimized and slow)
++  //
++  // Find Q and S, that Q * 2 ^ S = (P - 1)
++  var q = this.m.subn(1);
++  var s = 0;
++  while (q.cmpn(0) !== 0 && q.andln(1) === 0) {
++    s++;
++    q.ishrn(1);
+   }
+-  return offset + 2
+-}
++  assert(q.cmpn(0) !== 0);
+ 
+-Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
+-    this[offset + 2] = (value >>> 16)
+-    this[offset + 3] = (value >>> 24)
+-  } else {
+-    objectWriteUInt32(this, value, offset, true)
+-  }
+-  return offset + 4
+-}
++  var one = new BN(1).toRed(this);
++  var nOne = one.redNeg();
+ 
+-Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+-  if (value < 0) value = 0xffffffff + value + 1
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 24)
+-    this[offset + 1] = (value >>> 16)
+-    this[offset + 2] = (value >>> 8)
+-    this[offset + 3] = (value & 0xff)
+-  } else {
+-    objectWriteUInt32(this, value, offset, false)
+-  }
+-  return offset + 4
+-}
++  // Find quadratic non-residue
++  // NOTE: Max is such because of generalized Riemann hypothesis.
++  var lpow = this.m.subn(1).ishrn(1);
++  var z = this.m.bitLength();
++  z = new BN(2 * z * z).toRed(this);
++  while (this.pow(z, lpow).cmp(nOne) !== 0)
++    z.redIAdd(nOne);
+ 
+-function checkIEEE754 (buf, value, offset, ext, max, min) {
+-  if (offset + ext > buf.length) throw new RangeError('index out of range')
+-  if (offset < 0) throw new RangeError('index out of range')
+-}
++  var c = this.pow(z, q);
++  var r = this.pow(a, q.addn(1).ishrn(1));
++  var t = this.pow(a, q);
++  var m = s;
++  while (t.cmp(one) !== 0) {
++    var tmp = t;
++    for (var i = 0; tmp.cmp(one) !== 0; i++)
++      tmp = tmp.redSqr();
++    assert(i < m);
++    var b = this.pow(c, new BN(1).ishln(m - i - 1));
+ 
+-function writeFloat (buf, value, offset, littleEndian, noAssert) {
+-  if (!noAssert) {
+-    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
++    r = r.redMul(b);
++    c = b.redSqr();
++    t = t.redMul(c);
++    m = i;
+   }
+-  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+-  return offset + 4
+-}
+-
+-Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+-  return writeFloat(this, value, offset, true, noAssert)
+-}
+ 
+-Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+-  return writeFloat(this, value, offset, false, noAssert)
+-}
++  return r;
++};
+ 
+-function writeDouble (buf, value, offset, littleEndian, noAssert) {
+-  if (!noAssert) {
+-    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
++Red.prototype.invm = function invm(a) {
++  var inv = a._invmp(this.m);
++  if (inv.sign) {
++    inv.sign = false;
++    return this.imod(inv).redNeg();
++  } else {
++    return this.imod(inv);
+   }
+-  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+-  return offset + 8
+-}
+-
+-Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+-  return writeDouble(this, value, offset, true, noAssert)
+-}
+-
+-Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+-  return writeDouble(this, value, offset, false, noAssert)
+-}
++};
+ 
+-// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+-Buffer.prototype.copy = function copy (target, targetStart, start, end) {
+-  if (!start) start = 0
+-  if (!end && end !== 0) end = this.length
+-  if (targetStart >= target.length) targetStart = target.length
+-  if (!targetStart) targetStart = 0
+-  if (end > 0 && end < start) end = start
++Red.prototype.pow = function pow(a, num) {
++  var w = [];
+ 
+-  // Copy 0 bytes; we're done
+-  if (end === start) return 0
+-  if (target.length === 0 || this.length === 0) return 0
++  if (num.cmpn(0) === 0)
++    return new BN(1);
+ 
+-  // Fatal error conditions
+-  if (targetStart < 0) {
+-    throw new RangeError('targetStart out of bounds')
+-  }
+-  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
+-  if (end < 0) throw new RangeError('sourceEnd out of bounds')
++  var q = num.clone();
+ 
+-  // Are we oob?
+-  if (end > this.length) end = this.length
+-  if (target.length - targetStart < end - start) {
+-    end = target.length - targetStart + start
++  while (q.cmpn(0) !== 0) {
++    w.push(q.andln(1));
++    q.ishrn(1);
+   }
+ 
+-  var len = end - start
+-  var i
++  // Skip leading zeroes
++  var res = a;
++  for (var i = 0; i < w.length; i++, res = this.sqr(res))
++    if (w[i] !== 0)
++      break;
+ 
+-  if (this === target && start < targetStart && targetStart < end) {
+-    // descending copy from end
+-    for (i = len - 1; i >= 0; i--) {
+-      target[i + targetStart] = this[i + start]
+-    }
+-  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
+-    // ascending copy from start
+-    for (i = 0; i < len; i++) {
+-      target[i + targetStart] = this[i + start]
++  if (++i < w.length) {
++    for (var q = this.sqr(res); i < w.length; i++, q = this.sqr(q)) {
++      if (w[i] === 0)
++        continue;
++      res = this.mul(res, q);
+     }
+-  } else {
+-    Uint8Array.prototype.set.call(
+-      target,
+-      this.subarray(start, start + len),
+-      targetStart
+-    )
+   }
+ 
+-  return len
+-}
++  return res;
++};
+ 
+-// fill(value, start=0, end=buffer.length)
+-Buffer.prototype.fill = function fill (value, start, end) {
+-  if (!value) value = 0
+-  if (!start) start = 0
+-  if (!end) end = this.length
++Red.prototype.convertTo = function convertTo(num) {
++  var r = num.mod(this.m);
++  if (r === num)
++    return r.clone();
++  else
++    return r;
++};
++
++Red.prototype.convertFrom = function convertFrom(num) {
++  var res = num.clone();
++  res.red = null;
++  return res;
++};
+ 
+-  if (end < start) throw new RangeError('end < start')
++//
++// Montgomery method engine
++//
+ 
+-  // Fill 0 bytes; we're done
+-  if (end === start) return
+-  if (this.length === 0) return
++BN.mont = function mont(num) {
++  return new Mont(num);
++};
+ 
+-  if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
+-  if (end < 0 || end > this.length) throw new RangeError('end out of bounds')
++function Mont(m) {
++  Red.call(this, m);
+ 
+-  var i
+-  if (typeof value === 'number') {
+-    for (i = start; i < end; i++) {
+-      this[i] = value
+-    }
+-  } else {
+-    var bytes = utf8ToBytes(value.toString())
+-    var len = bytes.length
+-    for (i = start; i < end; i++) {
+-      this[i] = bytes[i % len]
+-    }
+-  }
++  this.shift = this.m.bitLength();
++  if (this.shift % 26 !== 0)
++    this.shift += 26 - (this.shift % 26);
++  this.r = new BN(1).ishln(this.shift);
++  this.r2 = this.imod(this.r.sqr());
++  this.rinv = this.r._invmp(this.m);
+ 
+-  return this
++  this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
++  this.minv.sign = true;
++  this.minv = this.minv.mod(this.r);
+ }
++inherits(Mont, Red);
+ 
+-// HELPER FUNCTIONS
+-// ================
+-
+-var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
++Mont.prototype.convertTo = function convertTo(num) {
++  return this.imod(num.shln(this.shift));
++};
+ 
+-function base64clean (str) {
+-  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+-  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
+-  // Node converts strings with length < 2 to ''
+-  if (str.length < 2) return ''
+-  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+-  while (str.length % 4 !== 0) {
+-    str = str + '='
+-  }
+-  return str
+-}
++Mont.prototype.convertFrom = function convertFrom(num) {
++  var r = this.imod(num.mul(this.rinv));
++  r.red = null;
++  return r;
++};
+ 
+-function stringtrim (str) {
+-  if (str.trim) return str.trim()
+-  return str.replace(/^\s+|\s+$/g, '')
+-}
++Mont.prototype.imul = function imul(a, b) {
++  if (a.cmpn(0) === 0 || b.cmpn(0) === 0) {
++    a.words[0] = 0;
++    a.length = 1;
++    return a;
++  }
+ 
+-function toHex (n) {
+-  if (n < 16) return '0' + n.toString(16)
+-  return n.toString(16)
+-}
++  var t = a.imul(b);
++  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
++  var u = t.isub(c).ishrn(this.shift);
++  var res = u;
++  if (u.cmp(this.m) >= 0)
++    res = u.isub(this.m);
++  else if (u.cmpn(0) < 0)
++    res = u.iadd(this.m);
+ 
+-function utf8ToBytes (string, units) {
+-  units = units || Infinity
+-  var codePoint
+-  var length = string.length
+-  var leadSurrogate = null
+-  var bytes = []
++  return res._forceRed(this);
++};
+ 
+-  for (var i = 0; i < length; i++) {
+-    codePoint = string.charCodeAt(i)
++Mont.prototype.mul = function mul(a, b) {
++  if (a.cmpn(0) === 0 || b.cmpn(0) === 0)
++    return new BN(0)._forceRed(this);
+ 
+-    // is surrogate component
+-    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+-      // last char was a lead
+-      if (!leadSurrogate) {
+-        // no lead yet
+-        if (codePoint > 0xDBFF) {
+-          // unexpected trail
+-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-          continue
+-        } else if (i + 1 === length) {
+-          // unpaired lead
+-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-          continue
+-        }
++  var t = a.mul(b);
++  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
++  var u = t.isub(c).ishrn(this.shift);
++  var res = u;
++  if (u.cmp(this.m) >= 0)
++    res = u.isub(this.m);
++  else if (u.cmpn(0) < 0)
++    res = u.iadd(this.m);
+ 
+-        // valid lead
+-        leadSurrogate = codePoint
++  return res._forceRed(this);
++};
+ 
+-        continue
+-      }
++Mont.prototype.invm = function invm(a) {
++  // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
++  var res = this.imod(a._invmp(this.m).mul(this.r2));
++  return res._forceRed(this);
++};
+ 
+-      // 2 leads in a row
+-      if (codePoint < 0xDC00) {
+-        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-        leadSurrogate = codePoint
+-        continue
+-      }
++})(typeof module === 'undefined' || module, this);
+ 
+-      // valid surrogate pair
+-      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
+-    } else if (leadSurrogate) {
+-      // valid bmp char, but last char was a lead
+-      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-    }
++},{}],51:[function(require,module,exports){
++'use strict'
+ 
+-    leadSurrogate = null
++module.exports = boundary
+ 
+-    // encode utf8
+-    if (codePoint < 0x80) {
+-      if ((units -= 1) < 0) break
+-      bytes.push(codePoint)
+-    } else if (codePoint < 0x800) {
+-      if ((units -= 2) < 0) break
+-      bytes.push(
+-        codePoint >> 0x6 | 0xC0,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else if (codePoint < 0x10000) {
+-      if ((units -= 3) < 0) break
+-      bytes.push(
+-        codePoint >> 0xC | 0xE0,
+-        codePoint >> 0x6 & 0x3F | 0x80,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else if (codePoint < 0x110000) {
+-      if ((units -= 4) < 0) break
+-      bytes.push(
+-        codePoint >> 0x12 | 0xF0,
+-        codePoint >> 0xC & 0x3F | 0x80,
+-        codePoint >> 0x6 & 0x3F | 0x80,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else {
+-      throw new Error('Invalid code point')
+-    }
++function boundary (cells) {
++  var i, j, k
++  var n = cells.length
++  var sz = 0
++  for (i = 0; i < n; ++i) {
++    sz += cells[i].length
+   }
+-
+-  return bytes
+-}
+-
+-function asciiToBytes (str) {
+-  var byteArray = []
+-  for (var i = 0; i < str.length; i++) {
+-    // Node's code seems to be doing this and not & 0x7F..
+-    byteArray.push(str.charCodeAt(i) & 0xFF)
++  var result = new Array(sz)
++  var ptr = 0
++  for (i = 0; i < n; ++i) {
++    var c = cells[i]
++    var d = c.length
++    for (j = 0; j < d; ++j) {
++      var b = result[ptr++] = new Array(d - 1)
++      var p = 0
++      for (k = 0; k < d; ++k) {
++        if (k === j) {
++          continue
++        }
++        b[p++] = c[k]
++      }
++      if (j & 1) {
++        var tmp = b[1]
++        b[1] = b[0]
++        b[0] = tmp
++      }
++    }
+   }
+-  return byteArray
++  return result
+ }
+ 
+-function utf16leToBytes (str, units) {
+-  var c, hi, lo
+-  var byteArray = []
+-  for (var i = 0; i < str.length; i++) {
+-    if ((units -= 2) < 0) break
++},{}],52:[function(require,module,exports){
++'use strict'
+ 
+-    c = str.charCodeAt(i)
+-    hi = c >> 8
+-    lo = c % 256
+-    byteArray.push(lo)
+-    byteArray.push(hi)
+-  }
++module.exports = boxIntersectWrapper
+ 
+-  return byteArray
+-}
++var pool = require('typedarray-pool')
++var sweep = require('./lib/sweep')
++var boxIntersectIter = require('./lib/intersect')
+ 
+-function base64ToBytes (str) {
+-  return base64.toByteArray(base64clean(str))
++function boxEmpty(d, box) {
++  for(var j=0; j<d; ++j) {
++    if(!(box[j] <= box[j+d])) {
++      return true
++    }
++  }
++  return false
+ }
+ 
+-function blitBuffer (src, dst, offset, length) {
+-  for (var i = 0; i < length; i++) {
+-    if ((i + offset >= dst.length) || (i >= src.length)) break
+-    dst[i + offset] = src[i]
++//Unpack boxes into a flat typed array, remove empty boxes
++function convertBoxes(boxes, d, data, ids) {
++  var ptr = 0
++  var count = 0
++  for(var i=0, n=boxes.length; i<n; ++i) {
++    var b = boxes[i]
++    if(boxEmpty(d, b)) {
++      continue
++    }
++    for(var j=0; j<2*d; ++j) {
++      data[ptr++] = b[j]
++    }
++    ids[count++] = i
+   }
+-  return i
++  return count
+ }
+ 
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"base64-js":54,"ieee754":55,"isarray":56}],54:[function(require,module,exports){
+-'use strict'
+-
+-exports.toByteArray = toByteArray
+-exports.fromByteArray = fromByteArray
+-
+-var lookup = []
+-var revLookup = []
+-var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+-
+-function init () {
+-  var i
+-  var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+-  var len = code.length
++//Perform type conversions, check bounds
++function boxIntersect(red, blue, visit, full) {
++  var n = red.length
++  var m = blue.length
+ 
+-  for (i = 0; i < len; i++) {
+-    lookup[i] = code[i]
++  //If either array is empty, then we can skip this whole thing
++  if(n <= 0 || m <= 0) {
++    return
+   }
+ 
+-  for (i = 0; i < len; ++i) {
+-    revLookup[code.charCodeAt(i)] = i
++  //Compute dimension, if it is 0 then we skip
++  var d = (red[0].length)>>>1
++  if(d <= 0) {
++    return
+   }
+-  revLookup['-'.charCodeAt(0)] = 62
+-  revLookup['_'.charCodeAt(0)] = 63
+-}
+ 
+-init()
++  var retval
+ 
+-function toByteArray (b64) {
+-  var i, j, l, tmp, placeHolders, arr
+-  var len = b64.length
++  //Convert red boxes
++  var redList  = pool.mallocDouble(2*d*n)
++  var redIds   = pool.mallocInt32(n)
++  n = convertBoxes(red, d, redList, redIds)
+ 
+-  if (len % 4 > 0) {
+-    throw new Error('Invalid string. Length must be a multiple of 4')
+-  }
++  if(n > 0) {
++    if(d === 1 && full) {
++      //Special case: 1d complete
++      sweep.init(n)
++      retval = sweep.sweepComplete(
++        d, visit, 
++        0, n, redList, redIds,
++        0, n, redList, redIds)
++    } else {
+ 
+-  // the number of equal signs (place holders)
+-  // if there are two placeholders, than the two characters before it
+-  // represent one byte
+-  // if there is only one, then the three characters before it represent 2 bytes
+-  // this is just a cheap hack to not do indexOf twice
+-  placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
++      //Convert blue boxes
++      var blueList = pool.mallocDouble(2*d*m)
++      var blueIds  = pool.mallocInt32(m)
++      m = convertBoxes(blue, d, blueList, blueIds)
+ 
+-  // base64 is 4/3 + up to two characters of the original data
+-  arr = new Arr(len * 3 / 4 - placeHolders)
++      if(m > 0) {
++        sweep.init(n+m)
+ 
+-  // if there are placeholders, only get up to the last complete 4 chars
+-  l = placeHolders > 0 ? len - 4 : len
++        if(d === 1) {
++          //Special case: 1d bipartite
++          retval = sweep.sweepBipartite(
++            d, visit, 
++            0, n, redList,  redIds,
++            0, m, blueList, blueIds)
++        } else {
++          //General case:  d>1
++          retval = boxIntersectIter(
++            d, visit,    full,
++            n, redList,  redIds,
++            m, blueList, blueIds)
++        }
+ 
+-  var L = 0
++        pool.free(blueList)
++        pool.free(blueIds)
++      }
++    }
+ 
+-  for (i = 0, j = 0; i < l; i += 4, j += 3) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
+-    arr[L++] = (tmp & 0xFF0000) >> 16
+-    arr[L++] = (tmp & 0xFF00) >> 8
+-    arr[L++] = tmp & 0xFF
++    pool.free(redList)
++    pool.free(redIds)
+   }
+ 
+-  if (placeHolders === 2) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
+-    arr[L++] = tmp & 0xFF
+-  } else if (placeHolders === 1) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
+-    arr[L++] = (tmp >> 8) & 0xFF
+-    arr[L++] = tmp & 0xFF
+-  }
++  return retval
++}
+ 
+-  return arr
++
++var RESULT
++
++function appendItem(i,j) {
++  RESULT.push([i,j])
+ }
+ 
+-function tripletToBase64 (num) {
+-  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
++function intersectFullArray(x) {
++  RESULT = []
++  boxIntersect(x, x, appendItem, true)
++  return RESULT
+ }
+ 
+-function encodeChunk (uint8, start, end) {
+-  var tmp
+-  var output = []
+-  for (var i = start; i < end; i += 3) {
+-    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+-    output.push(tripletToBase64(tmp))
++function intersectBipartiteArray(x, y) {
++  RESULT = []
++  boxIntersect(x, y, appendItem, false)
++  return RESULT
++}
++
++//User-friendly wrapper, handle full input and no-visitor cases
++function boxIntersectWrapper(arg0, arg1, arg2) {
++  var result
++  switch(arguments.length) {
++    case 1:
++      return intersectFullArray(arg0)
++    case 2:
++      if(typeof arg1 === 'function') {
++        return boxIntersect(arg0, arg0, arg1, true)
++      } else {
++        return intersectBipartiteArray(arg0, arg1)
++      }
++    case 3:
++      return boxIntersect(arg0, arg1, arg2, false)
++    default:
++      throw new Error('box-intersect: Invalid arguments')
+   }
+-  return output.join('')
+ }
++},{"./lib/intersect":54,"./lib/sweep":58,"typedarray-pool":449}],53:[function(require,module,exports){
++'use strict'
+ 
+-function fromByteArray (uint8) {
+-  var tmp
+-  var len = uint8.length
+-  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
+-  var output = ''
+-  var parts = []
+-  var maxChunkLength = 16383 // must be multiple of 3
++var DIMENSION   = 'd'
++var AXIS        = 'ax'
++var VISIT       = 'vv'
++var FLIP        = 'fp'
+ 
+-  // go through the array every three bytes, we'll deal with trailing stuff later
+-  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+-    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+-  }
++var ELEM_SIZE   = 'es'
+ 
+-  // pad the end with zeros, but make sure to not forget the extra bytes
+-  if (extraBytes === 1) {
+-    tmp = uint8[len - 1]
+-    output += lookup[tmp >> 2]
+-    output += lookup[(tmp << 4) & 0x3F]
+-    output += '=='
+-  } else if (extraBytes === 2) {
+-    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
+-    output += lookup[tmp >> 10]
+-    output += lookup[(tmp >> 4) & 0x3F]
+-    output += lookup[(tmp << 2) & 0x3F]
+-    output += '='
+-  }
++var RED_START   = 'rs'
++var RED_END     = 're'
++var RED_BOXES   = 'rb'
++var RED_INDEX   = 'ri'
++var RED_PTR     = 'rp'
+ 
+-  parts.push(output)
++var BLUE_START  = 'bs'
++var BLUE_END    = 'be'
++var BLUE_BOXES  = 'bb'
++var BLUE_INDEX  = 'bi'
++var BLUE_PTR    = 'bp'
+ 
+-  return parts.join('')
+-}
++var RETVAL      = 'rv'
+ 
+-},{}],55:[function(require,module,exports){
+-exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+-  var e, m
+-  var eLen = nBytes * 8 - mLen - 1
+-  var eMax = (1 << eLen) - 1
+-  var eBias = eMax >> 1
+-  var nBits = -7
+-  var i = isLE ? (nBytes - 1) : 0
+-  var d = isLE ? -1 : 1
+-  var s = buffer[offset + i]
++var INNER_LABEL = 'Q'
+ 
+-  i += d
++var ARGS = [
++  DIMENSION,
++  AXIS,
++  VISIT,
++  RED_START,
++  RED_END,
++  RED_BOXES,
++  RED_INDEX,
++  BLUE_START,
++  BLUE_END,
++  BLUE_BOXES,
++  BLUE_INDEX
++]
+ 
+-  e = s & ((1 << (-nBits)) - 1)
+-  s >>= (-nBits)
+-  nBits += eLen
+-  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
++function generateBruteForce(redMajor, flip, full) {
++  var funcName = 'bruteForce' + 
++    (redMajor ? 'Red' : 'Blue') + 
++    (flip ? 'Flip' : '') +
++    (full ? 'Full' : '')
+ 
+-  m = e & ((1 << (-nBits)) - 1)
+-  e >>= (-nBits)
+-  nBits += mLen
+-  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
++  var code = ['function ', funcName, '(', ARGS.join(), '){',
++    'var ', ELEM_SIZE, '=2*', DIMENSION, ';']
+ 
+-  if (e === 0) {
+-    e = 1 - eBias
+-  } else if (e === eMax) {
+-    return m ? NaN : ((s ? -1 : 1) * Infinity)
++  var redLoop = 
++    'for(var i=' + RED_START + ',' + RED_PTR + '=' + ELEM_SIZE + '*' + RED_START + ';' +
++        'i<' + RED_END +';' +
++        '++i,' + RED_PTR + '+=' + ELEM_SIZE + '){' +
++        'var x0=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '],' +
++            'x1=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '+' + DIMENSION + '],' +
++            'xi=' + RED_INDEX + '[i];'
++
++  var blueLoop = 
++    'for(var j=' + BLUE_START + ',' + BLUE_PTR + '=' + ELEM_SIZE + '*' + BLUE_START + ';' +
++        'j<' + BLUE_END + ';' +
++        '++j,' + BLUE_PTR + '+=' + ELEM_SIZE + '){' +
++        'var y0=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '],' +
++            (full ? 'y1=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '+' + DIMENSION + '],' : '') +
++            'yi=' + BLUE_INDEX + '[j];'
++
++  if(redMajor) {
++    code.push(redLoop, INNER_LABEL, ':', blueLoop)
+   } else {
+-    m = m + Math.pow(2, mLen)
+-    e = e - eBias
++    code.push(blueLoop, INNER_LABEL, ':', redLoop)
+   }
+-  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+-}
+ 
+-exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+-  var e, m, c
+-  var eLen = nBytes * 8 - mLen - 1
+-  var eMax = (1 << eLen) - 1
+-  var eBias = eMax >> 1
+-  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+-  var i = isLE ? 0 : (nBytes - 1)
+-  var d = isLE ? 1 : -1
+-  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
++  if(full) {
++    code.push('if(y1<x0||x1<y0)continue;')
++  } else if(flip) {
++    code.push('if(y0<=x0||x1<y0)continue;')
++  } else {
++    code.push('if(y0<x0||x1<y0)continue;')
++  }
+ 
+-  value = Math.abs(value)
++  code.push('for(var k='+AXIS+'+1;k<'+DIMENSION+';++k){'+
++    'var r0='+RED_BOXES+'[k+'+RED_PTR+'],'+
++        'r1='+RED_BOXES+'[k+'+DIMENSION+'+'+RED_PTR+'],'+
++        'b0='+BLUE_BOXES+'[k+'+BLUE_PTR+'],'+
++        'b1='+BLUE_BOXES+'[k+'+DIMENSION+'+'+BLUE_PTR+'];'+
++      'if(r1<b0||b1<r0)continue ' + INNER_LABEL + ';}' +
++      'var ' + RETVAL + '=' + VISIT + '(')
+ 
+-  if (isNaN(value) || value === Infinity) {
+-    m = isNaN(value) ? 1 : 0
+-    e = eMax
++  if(flip) {
++    code.push('yi,xi')
+   } else {
+-    e = Math.floor(Math.log(value) / Math.LN2)
+-    if (value * (c = Math.pow(2, -e)) < 1) {
+-      e--
+-      c *= 2
+-    }
+-    if (e + eBias >= 1) {
+-      value += rt / c
+-    } else {
+-      value += rt * Math.pow(2, 1 - eBias)
+-    }
+-    if (value * c >= 2) {
+-      e++
+-      c /= 2
+-    }
+-
+-    if (e + eBias >= eMax) {
+-      m = 0
+-      e = eMax
+-    } else if (e + eBias >= 1) {
+-      m = (value * c - 1) * Math.pow(2, mLen)
+-      e = e + eBias
+-    } else {
+-      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+-      e = 0
+-    }
++    code.push('xi,yi')
+   }
+ 
+-  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+-
+-  e = (e << mLen) | m
+-  eLen += mLen
+-  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
++  code.push(');if(' + RETVAL + '!==void 0)return ' + RETVAL + ';}}}')
+ 
+-  buffer[offset + i - d] |= s * 128
++  return {
++    name: funcName, 
++    code: code.join('')
++  }
+ }
+ 
+-},{}],56:[function(require,module,exports){
+-var toString = {}.toString;
+-
+-module.exports = Array.isArray || function (arr) {
+-  return toString.call(arr) == '[object Array]';
+-};
+-
+-},{}],57:[function(require,module,exports){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+-
+-function EventEmitter() {
+-  this._events = this._events || {};
+-  this._maxListeners = this._maxListeners || undefined;
+-}
+-module.exports = EventEmitter;
+-
+-// Backwards-compat with node 0.10.x
+-EventEmitter.EventEmitter = EventEmitter;
+-
+-EventEmitter.prototype._events = undefined;
+-EventEmitter.prototype._maxListeners = undefined;
+-
+-// By default EventEmitters will print a warning if more than 10 listeners are
+-// added to it. This is a useful default which helps finding memory leaks.
+-EventEmitter.defaultMaxListeners = 10;
+-
+-// Obviously not all Emitters should be limited to 10. This function allows
+-// that to be increased. Set to zero for unlimited.
+-EventEmitter.prototype.setMaxListeners = function(n) {
+-  if (!isNumber(n) || n < 0 || isNaN(n))
+-    throw TypeError('n must be a positive number');
+-  this._maxListeners = n;
+-  return this;
+-};
+-
+-EventEmitter.prototype.emit = function(type) {
+-  var er, handler, len, args, i, listeners;
++function bruteForcePlanner(full) {
++  var funcName = 'bruteForce' + (full ? 'Full' : 'Partial')
++  var prefix = []
++  var fargs = ARGS.slice()
++  if(!full) {
++    fargs.splice(3, 0, FLIP)
++  }
+ 
+-  if (!this._events)
+-    this._events = {};
++  var code = ['function ' + funcName + '(' + fargs.join() + '){']
+ 
+-  // If there is no 'error' event listener then throw.
+-  if (type === 'error') {
+-    if (!this._events.error ||
+-        (isObject(this._events.error) && !this._events.error.length)) {
+-      er = arguments[1];
+-      if (er instanceof Error) {
+-        throw er; // Unhandled 'error' event
+-      }
+-      throw TypeError('Uncaught, unspecified "error" event.');
+-    }
++  function invoke(redMajor, flip) {
++    var res = generateBruteForce(redMajor, flip, full)
++    prefix.push(res.code)
++    code.push('return ' + res.name + '(' + ARGS.join() + ');')
+   }
+ 
+-  handler = this._events[type];
+-
+-  if (isUndefined(handler))
+-    return false;
++  code.push('if(' + RED_END + '-' + RED_START + '>' +
++                    BLUE_END + '-' + BLUE_START + '){')
+ 
+-  if (isFunction(handler)) {
+-    switch (arguments.length) {
+-      // fast cases
+-      case 1:
+-        handler.call(this);
+-        break;
+-      case 2:
+-        handler.call(this, arguments[1]);
+-        break;
+-      case 3:
+-        handler.call(this, arguments[1], arguments[2]);
+-        break;
+-      // slower
+-      default:
+-        args = Array.prototype.slice.call(arguments, 1);
+-        handler.apply(this, args);
+-    }
+-  } else if (isObject(handler)) {
+-    args = Array.prototype.slice.call(arguments, 1);
+-    listeners = handler.slice();
+-    len = listeners.length;
+-    for (i = 0; i < len; i++)
+-      listeners[i].apply(this, args);
++  if(full) {
++    invoke(true, false)
++    code.push('}else{')
++    invoke(false, false)
++  } else {
++    code.push('if(' + FLIP + '){')
++    invoke(true, true)
++    code.push('}else{')
++    invoke(true, false)
++    code.push('}}else{if(' + FLIP + '){')
++    invoke(false, true)
++    code.push('}else{')
++    invoke(false, false)
++    code.push('}')
+   }
++  code.push('}}return ' + funcName)
+ 
+-  return true;
+-};
+-
+-EventEmitter.prototype.addListener = function(type, listener) {
+-  var m;
++  var codeStr = prefix.join('') + code.join('')
++  var proc = new Function(codeStr)
++  return proc()
++}
+ 
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+ 
+-  if (!this._events)
+-    this._events = {};
++exports.partial = bruteForcePlanner(false)
++exports.full    = bruteForcePlanner(true)
++},{}],54:[function(require,module,exports){
++'use strict'
+ 
+-  // To avoid recursion in the case that type === "newListener"! Before
+-  // adding it to the listeners, first emit "newListener".
+-  if (this._events.newListener)
+-    this.emit('newListener', type,
+-              isFunction(listener.listener) ?
+-              listener.listener : listener);
++module.exports = boxIntersectIter
+ 
+-  if (!this._events[type])
+-    // Optimize the case of one listener. Don't need the extra array object.
+-    this._events[type] = listener;
+-  else if (isObject(this._events[type]))
+-    // If we've already got an array, just append.
+-    this._events[type].push(listener);
+-  else
+-    // Adding the second element, need to change to array.
+-    this._events[type] = [this._events[type], listener];
++var pool = require('typedarray-pool')
++var bits = require('bit-twiddle')
++var bruteForce = require('./brute')
++var bruteForcePartial = bruteForce.partial
++var bruteForceFull = bruteForce.full
++var sweep = require('./sweep')
++var findMedian = require('./median')
++var genPartition = require('./partition')
+ 
+-  // Check for listener leak
+-  if (isObject(this._events[type]) && !this._events[type].warned) {
+-    if (!isUndefined(this._maxListeners)) {
+-      m = this._maxListeners;
+-    } else {
+-      m = EventEmitter.defaultMaxListeners;
+-    }
++//Twiddle parameters
++var BRUTE_FORCE_CUTOFF    = 128       //Cut off for brute force search
++var SCAN_CUTOFF           = (1<<22)   //Cut off for two way scan
++var SCAN_COMPLETE_CUTOFF  = (1<<22)  
+ 
+-    if (m && m > 0 && this._events[type].length > m) {
+-      this._events[type].warned = true;
+-      console.error('(node) warning: possible EventEmitter memory ' +
+-                    'leak detected. %d listeners added. ' +
+-                    'Use emitter.setMaxListeners() to increase limit.',
+-                    this._events[type].length);
+-      if (typeof console.trace === 'function') {
+-        // not supported in IE 10
+-        console.trace();
+-      }
+-    }
+-  }
++//Partition functions
++var partitionInteriorContainsInterval = genPartition(
++  '!(lo>=p0)&&!(p1>=hi)', 
++  ['p0', 'p1'])
+ 
+-  return this;
+-};
++var partitionStartEqual = genPartition(
++  'lo===p0',
++  ['p0'])
+ 
+-EventEmitter.prototype.on = EventEmitter.prototype.addListener;
++var partitionStartLessThan = genPartition(
++  'lo<p0',
++  ['p0'])
+ 
+-EventEmitter.prototype.once = function(type, listener) {
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
++var partitionEndLessThanEqual = genPartition(
++  'hi<=p0',
++  ['p0'])
+ 
+-  var fired = false;
++var partitionContainsPoint = genPartition(
++  'lo<=p0&&p0<=hi',
++  ['p0'])
+ 
+-  function g() {
+-    this.removeListener(type, g);
++var partitionContainsPointProper = genPartition(
++  'lo<p0&&p0<=hi',
++  ['p0'])
+ 
+-    if (!fired) {
+-      fired = true;
+-      listener.apply(this, arguments);
+-    }
+-  }
++//Frame size for iterative loop
++var IFRAME_SIZE = 6
++var DFRAME_SIZE = 2
+ 
+-  g.listener = listener;
+-  this.on(type, g);
++//Data for box statck
++var INIT_CAPACITY = 1024
++var BOX_ISTACK  = pool.mallocInt32(INIT_CAPACITY)
++var BOX_DSTACK  = pool.mallocDouble(INIT_CAPACITY)
+ 
+-  return this;
+-};
++//Initialize iterative loop queue
++function iterInit(d, count) {
++  var levels = (8 * bits.log2(count+1) * (d+1))|0
++  var maxInts = bits.nextPow2(IFRAME_SIZE*levels)
++  if(BOX_ISTACK.length < maxInts) {
++    pool.free(BOX_ISTACK)
++    BOX_ISTACK = pool.mallocInt32(maxInts)
++  }
++  var maxDoubles = bits.nextPow2(DFRAME_SIZE*levels)
++  if(BOX_DSTACK < maxDoubles) {
++    pool.free(BOX_DSTACK)
++    BOX_DSTACK = pool.mallocDouble(maxDoubles)
++  }
++}
+ 
+-// emits a 'removeListener' event iff the listener was removed
+-EventEmitter.prototype.removeListener = function(type, listener) {
+-  var list, position, length, i;
++//Append item to queue
++function iterPush(ptr,
++  axis, 
++  redStart, redEnd, 
++  blueStart, blueEnd, 
++  state, 
++  lo, hi) {
+ 
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
++  var iptr = IFRAME_SIZE * ptr
++  BOX_ISTACK[iptr]   = axis
++  BOX_ISTACK[iptr+1] = redStart
++  BOX_ISTACK[iptr+2] = redEnd
++  BOX_ISTACK[iptr+3] = blueStart
++  BOX_ISTACK[iptr+4] = blueEnd
++  BOX_ISTACK[iptr+5] = state
+ 
+-  if (!this._events || !this._events[type])
+-    return this;
++  var dptr = DFRAME_SIZE * ptr
++  BOX_DSTACK[dptr]   = lo
++  BOX_DSTACK[dptr+1] = hi
++}
+ 
+-  list = this._events[type];
+-  length = list.length;
+-  position = -1;
++//Special case:  Intersect single point with list of intervals
++function onePointPartial(
++  d, axis, visit, flip,
++  redStart, redEnd, red, redIndex,
++  blueOffset, blue, blueId) {
+ 
+-  if (list === listener ||
+-      (isFunction(list.listener) && list.listener === listener)) {
+-    delete this._events[type];
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
++  var elemSize = 2 * d
++  var bluePtr  = blueOffset * elemSize
++  var blueX    = blue[bluePtr + axis]
+ 
+-  } else if (isObject(list)) {
+-    for (i = length; i-- > 0;) {
+-      if (list[i] === listener ||
+-          (list[i].listener && list[i].listener === listener)) {
+-        position = i;
+-        break;
++red_loop:
++  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
++    var r0 = red[redPtr+axis]
++    var r1 = red[redPtr+axis+d]
++    if(blueX < r0 || r1 < blueX) {
++      continue
++    }
++    if(flip && blueX === r0) {
++      continue
++    }
++    var redId = redIndex[i]
++    for(var j=axis+1; j<d; ++j) {
++      var r0 = red[redPtr+j]
++      var r1 = red[redPtr+j+d]
++      var b0 = blue[bluePtr+j]
++      var b1 = blue[bluePtr+j+d]
++      if(r1 < b0 || b1 < r0) {
++        continue red_loop
+       }
+     }
+-
+-    if (position < 0)
+-      return this;
+-
+-    if (list.length === 1) {
+-      list.length = 0;
+-      delete this._events[type];
++    var retval
++    if(flip) {
++      retval = visit(blueId, redId)
+     } else {
+-      list.splice(position, 1);
++      retval = visit(redId, blueId)
++    }
++    if(retval !== void 0) {
++      return retval
+     }
+-
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+   }
++}
+ 
+-  return this;
+-};
+-
+-EventEmitter.prototype.removeAllListeners = function(type) {
+-  var key, listeners;
+-
+-  if (!this._events)
+-    return this;
++//Special case:  Intersect one point with list of intervals
++function onePointFull(
++  d, axis, visit,
++  redStart, redEnd, red, redIndex,
++  blueOffset, blue, blueId) {
+ 
+-  // not listening for removeListener, no need to emit
+-  if (!this._events.removeListener) {
+-    if (arguments.length === 0)
+-      this._events = {};
+-    else if (this._events[type])
+-      delete this._events[type];
+-    return this;
+-  }
++  var elemSize = 2 * d
++  var bluePtr  = blueOffset * elemSize
++  var blueX    = blue[bluePtr + axis]
+ 
+-  // emit removeListener for all listeners on all events
+-  if (arguments.length === 0) {
+-    for (key in this._events) {
+-      if (key === 'removeListener') continue;
+-      this.removeAllListeners(key);
++red_loop:
++  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
++    var redId = redIndex[i]
++    if(redId === blueId) {
++      continue
++    }
++    var r0 = red[redPtr+axis]
++    var r1 = red[redPtr+axis+d]
++    if(blueX < r0 || r1 < blueX) {
++      continue
++    }
++    for(var j=axis+1; j<d; ++j) {
++      var r0 = red[redPtr+j]
++      var r1 = red[redPtr+j+d]
++      var b0 = blue[bluePtr+j]
++      var b1 = blue[bluePtr+j+d]
++      if(r1 < b0 || b1 < r0) {
++        continue red_loop
++      }
++    }
++    var retval = visit(redId, blueId)
++    if(retval !== void 0) {
++      return retval
+     }
+-    this.removeAllListeners('removeListener');
+-    this._events = {};
+-    return this;
+-  }
+-
+-  listeners = this._events[type];
+-
+-  if (isFunction(listeners)) {
+-    this.removeListener(type, listeners);
+-  } else if (listeners) {
+-    // LIFO order
+-    while (listeners.length)
+-      this.removeListener(type, listeners[listeners.length - 1]);
+   }
+-  delete this._events[type];
++}
+ 
+-  return this;
+-};
++//The main box intersection routine
++function boxIntersectIter(
++  d, visit, initFull,
++  xSize, xBoxes, xIndex,
++  ySize, yBoxes, yIndex) {
+ 
+-EventEmitter.prototype.listeners = function(type) {
+-  var ret;
+-  if (!this._events || !this._events[type])
+-    ret = [];
+-  else if (isFunction(this._events[type]))
+-    ret = [this._events[type]];
+-  else
+-    ret = this._events[type].slice();
+-  return ret;
+-};
++  //Reserve memory for stack
++  iterInit(d, xSize + ySize)
+ 
+-EventEmitter.prototype.listenerCount = function(type) {
+-  if (this._events) {
+-    var evlistener = this._events[type];
++  var top  = 0
++  var elemSize = 2 * d
++  var retval
+ 
+-    if (isFunction(evlistener))
+-      return 1;
+-    else if (evlistener)
+-      return evlistener.length;
++  iterPush(top++,
++      0,
++      0, xSize,
++      0, ySize,
++      initFull ? 16 : 0, 
++      -Infinity, Infinity)
++  if(!initFull) {
++    iterPush(top++,
++      0,
++      0, ySize,
++      0, xSize,
++      1, 
++      -Infinity, Infinity)
+   }
+-  return 0;
+-};
+ 
+-EventEmitter.listenerCount = function(emitter, type) {
+-  return emitter.listenerCount(type);
+-};
++  while(top > 0) {
++    top  -= 1
+ 
+-function isFunction(arg) {
+-  return typeof arg === 'function';
+-}
++    var iptr = top * IFRAME_SIZE
++    var axis      = BOX_ISTACK[iptr]
++    var redStart  = BOX_ISTACK[iptr+1]
++    var redEnd    = BOX_ISTACK[iptr+2]
++    var blueStart = BOX_ISTACK[iptr+3]
++    var blueEnd   = BOX_ISTACK[iptr+4]
++    var state     = BOX_ISTACK[iptr+5]
+ 
+-function isNumber(arg) {
+-  return typeof arg === 'number';
+-}
++    var dptr = top * DFRAME_SIZE
++    var lo        = BOX_DSTACK[dptr]
++    var hi        = BOX_DSTACK[dptr+1]
+ 
+-function isObject(arg) {
+-  return typeof arg === 'object' && arg !== null;
+-}
++    //Unpack state info
++    var flip      = (state & 1)
++    var full      = !!(state & 16)
+ 
+-function isUndefined(arg) {
+-  return arg === void 0;
+-}
++    //Unpack indices
++    var red       = xBoxes
++    var redIndex  = xIndex
++    var blue      = yBoxes
++    var blueIndex = yIndex
++    if(flip) {
++      red         = yBoxes
++      redIndex    = yIndex
++      blue        = xBoxes
++      blueIndex   = xIndex
++    }
+ 
+-},{}],58:[function(require,module,exports){
+-if (typeof Object.create === 'function') {
+-  // implementation from standard node.js 'util' module
+-  module.exports = function inherits(ctor, superCtor) {
+-    ctor.super_ = superCtor
+-    ctor.prototype = Object.create(superCtor.prototype, {
+-      constructor: {
+-        value: ctor,
+-        enumerable: false,
+-        writable: true,
+-        configurable: true
++    if(state & 2) {
++      redEnd = partitionStartLessThan(
++        d, axis,
++        redStart, redEnd, red, redIndex,
++        hi)
++      if(redStart >= redEnd) {
++        continue
+       }
+-    });
+-  };
+-} else {
+-  // old school shim for old browsers
+-  module.exports = function inherits(ctor, superCtor) {
+-    ctor.super_ = superCtor
+-    var TempCtor = function () {}
+-    TempCtor.prototype = superCtor.prototype
+-    ctor.prototype = new TempCtor()
+-    ctor.prototype.constructor = ctor
+-  }
+-}
+-
+-},{}],59:[function(require,module,exports){
+-(function (process){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
++    }
++    if(state & 4) {
++      redStart = partitionEndLessThanEqual(
++        d, axis,
++        redStart, redEnd, red, redIndex,
++        lo)
++      if(redStart >= redEnd) {
++        continue
++      }
++    }
++    
++    var redCount  = redEnd  - redStart
++    var blueCount = blueEnd - blueStart
+ 
+-// resolves . and .. elements in a path array with directory names there
+-// must be no slashes, empty elements, or device names (c:\) in the array
+-// (so also no leading and trailing slashes - it does not distinguish
+-// relative and absolute paths)
+-function normalizeArray(parts, allowAboveRoot) {
+-  // if the path tries to go above the root, `up` ends up > 0
+-  var up = 0;
+-  for (var i = parts.length - 1; i >= 0; i--) {
+-    var last = parts[i];
+-    if (last === '.') {
+-      parts.splice(i, 1);
+-    } else if (last === '..') {
+-      parts.splice(i, 1);
+-      up++;
+-    } else if (up) {
+-      parts.splice(i, 1);
+-      up--;
++    if(full) {
++      if(d * redCount * (redCount + blueCount) < SCAN_COMPLETE_CUTOFF) {
++        retval = sweep.scanComplete(
++          d, axis, visit, 
++          redStart, redEnd, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      }
++    } else {
++      if(d * Math.min(redCount, blueCount) < BRUTE_FORCE_CUTOFF) {
++        //If input small, then use brute force
++        retval = bruteForcePartial(
++            d, axis, visit, flip,
++            redStart,  redEnd,  red,  redIndex,
++            blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      } else if(d * redCount * blueCount < SCAN_CUTOFF) {
++        //If input medium sized, then use sweep and prune
++        retval = sweep.scanBipartite(
++          d, axis, visit, flip, 
++          redStart, redEnd, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      }
+     }
+-  }
++    
++    //First, find all red intervals whose interior contains (lo,hi)
++    var red0 = partitionInteriorContainsInterval(
++      d, axis, 
++      redStart, redEnd, red, redIndex,
++      lo, hi)
+ 
+-  // if the path is allowed to go above the root, restore leading ..s
+-  if (allowAboveRoot) {
+-    for (; up--; up) {
+-      parts.unshift('..');
++    //Lower dimensional case
++    if(redStart < red0) {
++
++      if(d * (red0 - redStart) < BRUTE_FORCE_CUTOFF) {
++        //Special case for small inputs: use brute force
++        retval = bruteForceFull(
++          d, axis+1, visit,
++          redStart, red0, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++      } else if(axis === d-2) {
++        if(flip) {
++          retval = sweep.sweepBipartite(
++            d, visit,
++            blueStart, blueEnd, blue, blueIndex,
++            redStart, red0, red, redIndex)
++        } else {
++          retval = sweep.sweepBipartite(
++            d, visit,
++            redStart, red0, red, redIndex,
++            blueStart, blueEnd, blue, blueIndex)
++        }
++        if(retval !== void 0) {
++          return retval
++        }
++      } else {
++        iterPush(top++,
++          axis+1,
++          redStart, red0,
++          blueStart, blueEnd,
++          flip,
++          -Infinity, Infinity)
++        iterPush(top++,
++          axis+1,
++          blueStart, blueEnd,
++          redStart, red0,
++          flip^1,
++          -Infinity, Infinity)
++      }
+     }
+-  }
+ 
+-  return parts;
+-}
++    //Divide and conquer phase
++    if(red0 < redEnd) {
+ 
+-// Split a filename into [root, dir, basename, ext], unix version
+-// 'root' is just a slash, or nothing.
+-var splitPathRe =
+-    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
+-var splitPath = function(filename) {
+-  return splitPathRe.exec(filename).slice(1);
+-};
++      //Cut blue into 3 parts:
++      //
++      //  Points < mid point
++      //  Points = mid point
++      //  Points > mid point
++      //
++      var blue0 = findMedian(
++        d, axis, 
++        blueStart, blueEnd, blue, blueIndex)
++      var mid = blue[elemSize * blue0 + axis]
++      var blue1 = partitionStartEqual(
++        d, axis,
++        blue0, blueEnd, blue, blueIndex,
++        mid)
+ 
+-// path.resolve([from ...], to)
+-// posix version
+-exports.resolve = function() {
+-  var resolvedPath = '',
+-      resolvedAbsolute = false;
++      //Right case
++      if(blue1 < blueEnd) {
++        iterPush(top++,
++          axis,
++          red0, redEnd,
++          blue1, blueEnd,
++          (flip|4) + (full ? 16 : 0),
++          mid, hi)
++      }
+ 
+-  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
+-    var path = (i >= 0) ? arguments[i] : process.cwd();
++      //Left case
++      if(blueStart < blue0) {
++        iterPush(top++,
++          axis,
++          red0, redEnd,
++          blueStart, blue0,
++          (flip|2) + (full ? 16 : 0),
++          lo, mid)
++      }
+ 
+-    // Skip empty and invalid entries
+-    if (typeof path !== 'string') {
+-      throw new TypeError('Arguments to path.resolve must be strings');
+-    } else if (!path) {
+-      continue;
+-    }
++      //Center case (the hard part)
++      if(blue0 + 1 === blue1) {
++        //Optimization: Range with exactly 1 point, use a brute force scan
++        if(full) {
++          retval = onePointFull(
++            d, axis, visit,
++            red0, redEnd, red, redIndex,
++            blue0, blue, blueIndex[blue0])
++        } else {
++          retval = onePointPartial(
++            d, axis, visit, flip,
++            red0, redEnd, red, redIndex,
++            blue0, blue, blueIndex[blue0])
++        }
++        if(retval !== void 0) {
++          return retval
++        }
++      } else if(blue0 < blue1) {
++        var red1
++        if(full) {
++          //If full intersection, need to handle special case
++          red1 = partitionContainsPoint(
++            d, axis,
++            red0, redEnd, red, redIndex,
++            mid)
++          if(red0 < red1) {
++            var redX = partitionStartEqual(
++              d, axis,
++              red0, red1, red, redIndex,
++              mid)
++            if(axis === d-2) {
++              //Degenerate sweep intersection:
++              //  [red0, redX] with [blue0, blue1]
++              if(red0 < redX) {
++                retval = sweep.sweepComplete(
++                  d, visit,
++                  red0, redX, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++                if(retval !== void 0) {
++                  return retval
++                }
++              }
+ 
+-    resolvedPath = path + '/' + resolvedPath;
+-    resolvedAbsolute = path.charAt(0) === '/';
++              //Normal sweep intersection:
++              //  [redX, red1] with [blue0, blue1]
++              if(redX < red1) {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  redX, red1, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++                if(retval !== void 0) {
++                  return retval
++                }
++              }
++            } else {
++              if(red0 < redX) {
++                iterPush(top++,
++                  axis+1,
++                  red0, redX,
++                  blue0, blue1,
++                  16,
++                  -Infinity, Infinity)
++              }
++              if(redX < red1) {
++                iterPush(top++,
++                  axis+1,
++                  redX, red1,
++                  blue0, blue1,
++                  0,
++                  -Infinity, Infinity)
++                iterPush(top++,
++                  axis+1,
++                  blue0, blue1,
++                  redX, red1,
++                  1,
++                  -Infinity, Infinity)
++              }
++            }
++          }
++        } else {
++          if(flip) {
++            red1 = partitionContainsPointProper(
++              d, axis,
++              red0, redEnd, red, redIndex,
++              mid)
++          } else {
++            red1 = partitionContainsPoint(
++              d, axis,
++              red0, redEnd, red, redIndex,
++              mid)
++          }
++          if(red0 < red1) {
++            if(axis === d-2) {
++              if(flip) {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  blue0, blue1, blue, blueIndex,
++                  red0, red1, red, redIndex)
++              } else {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  red0, red1, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++              }
++            } else {
++              iterPush(top++,
++                axis+1,
++                red0, red1,
++                blue0, blue1,
++                flip,
++                -Infinity, Infinity)
++              iterPush(top++,
++                axis+1,
++                blue0, blue1,
++                red0, red1,
++                flip^1,
++                -Infinity, Infinity)
++            }
++          }
++        }
++      }
++    }
+   }
++}
++},{"./brute":53,"./median":55,"./partition":56,"./sweep":58,"bit-twiddle":49,"typedarray-pool":449}],55:[function(require,module,exports){
++'use strict'
+ 
+-  // At this point the path should be resolved to a full absolute path, but
+-  // handle relative paths to be safe (might happen when process.cwd() fails)
+-
+-  // Normalize the path
+-  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
+-    return !!p;
+-  }), !resolvedAbsolute).join('/');
++module.exports = findMedian
+ 
+-  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
+-};
++var genPartition = require('./partition')
+ 
+-// path.normalize(path)
+-// posix version
+-exports.normalize = function(path) {
+-  var isAbsolute = exports.isAbsolute(path),
+-      trailingSlash = substr(path, -1) === '/';
++var partitionStartLessThan = genPartition('lo<p0', ['p0'])
+ 
+-  // Normalize the path
+-  path = normalizeArray(filter(path.split('/'), function(p) {
+-    return !!p;
+-  }), !isAbsolute).join('/');
++var PARTITION_THRESHOLD = 8   //Cut off for using insertion sort in findMedian
+ 
+-  if (!path && !isAbsolute) {
+-    path = '.';
+-  }
+-  if (path && trailingSlash) {
+-    path += '/';
++//Base case for median finding:  Use insertion sort
++function insertionSort(d, axis, start, end, boxes, ids) {
++  var elemSize = 2 * d
++  var boxPtr = elemSize * (start+1) + axis
++  for(var i=start+1; i<end; ++i, boxPtr+=elemSize) {
++    var x = boxes[boxPtr]
++    for(var j=i, ptr=elemSize*(i-1); 
++        j>start && boxes[ptr+axis] > x; 
++        --j, ptr-=elemSize) {
++      //Swap
++      var aPtr = ptr
++      var bPtr = ptr+elemSize
++      for(var k=0; k<elemSize; ++k, ++aPtr, ++bPtr) {
++        var y = boxes[aPtr]
++        boxes[aPtr] = boxes[bPtr]
++        boxes[bPtr] = y
++      }
++      var tmp = ids[j]
++      ids[j] = ids[j-1]
++      ids[j-1] = tmp
++    }
+   }
++}
+ 
+-  return (isAbsolute ? '/' : '') + path;
+-};
+-
+-// posix version
+-exports.isAbsolute = function(path) {
+-  return path.charAt(0) === '/';
+-};
++//Find median using quick select algorithm
++//  takes O(n) time with high probability
++function findMedian(d, axis, start, end, boxes, ids) {
++  if(end <= start+1) {
++    return start
++  }
+ 
+-// posix version
+-exports.join = function() {
+-  var paths = Array.prototype.slice.call(arguments, 0);
+-  return exports.normalize(filter(paths, function(p, index) {
+-    if (typeof p !== 'string') {
+-      throw new TypeError('Arguments to path.join must be strings');
++  var lo       = start
++  var hi       = end
++  var mid      = ((end + start) >>> 1)
++  var elemSize = 2*d
++  var pivot    = mid
++  var value    = boxes[elemSize*mid+axis]
++  
++  while(lo < hi) {
++    if(hi - lo < PARTITION_THRESHOLD) {
++      insertionSort(d, axis, lo, hi, boxes, ids)
++      value = boxes[elemSize*mid+axis]
++      break
+     }
+-    return p;
+-  }).join('/'));
+-};
+-
+-
+-// path.relative(from, to)
+-// posix version
+-exports.relative = function(from, to) {
+-  from = exports.resolve(from).substr(1);
+-  to = exports.resolve(to).substr(1);
+-
+-  function trim(arr) {
+-    var start = 0;
+-    for (; start < arr.length; start++) {
+-      if (arr[start] !== '') break;
++    
++    //Select pivot using median-of-3
++    var count  = hi - lo
++    var pivot0 = (Math.random()*count+lo)|0
++    var value0 = boxes[elemSize*pivot0 + axis]
++    var pivot1 = (Math.random()*count+lo)|0
++    var value1 = boxes[elemSize*pivot1 + axis]
++    var pivot2 = (Math.random()*count+lo)|0
++    var value2 = boxes[elemSize*pivot2 + axis]
++    if(value0 <= value1) {
++      if(value2 >= value1) {
++        pivot = pivot1
++        value = value1
++      } else if(value0 >= value2) {
++        pivot = pivot0
++        value = value0
++      } else {
++        pivot = pivot2
++        value = value2
++      }
++    } else {
++      if(value1 >= value2) {
++        pivot = pivot1
++        value = value1
++      } else if(value2 >= value0) {
++        pivot = pivot0
++        value = value0
++      } else {
++        pivot = pivot2
++        value = value2
++      }
+     }
+ 
+-    var end = arr.length - 1;
+-    for (; end >= 0; end--) {
+-      if (arr[end] !== '') break;
++    //Swap pivot to end of array
++    var aPtr = elemSize * (hi-1)
++    var bPtr = elemSize * pivot
++    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
++      var x = boxes[aPtr]
++      boxes[aPtr] = boxes[bPtr]
++      boxes[bPtr] = x
+     }
++    var y = ids[hi-1]
++    ids[hi-1] = ids[pivot]
++    ids[pivot] = y
+ 
+-    if (start > end) return [];
+-    return arr.slice(start, end - start + 1);
+-  }
++    //Partition using pivot
++    pivot = partitionStartLessThan(
++      d, axis, 
++      lo, hi-1, boxes, ids,
++      value)
+ 
+-  var fromParts = trim(from.split('/'));
+-  var toParts = trim(to.split('/'));
++    //Swap pivot back
++    var aPtr = elemSize * (hi-1)
++    var bPtr = elemSize * pivot
++    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
++      var x = boxes[aPtr]
++      boxes[aPtr] = boxes[bPtr]
++      boxes[bPtr] = x
++    }
++    var y = ids[hi-1]
++    ids[hi-1] = ids[pivot]
++    ids[pivot] = y
+ 
+-  var length = Math.min(fromParts.length, toParts.length);
+-  var samePartsLength = length;
+-  for (var i = 0; i < length; i++) {
+-    if (fromParts[i] !== toParts[i]) {
+-      samePartsLength = i;
+-      break;
++    //Swap pivot to last pivot
++    if(mid < pivot) {
++      hi = pivot-1
++      while(lo < hi && 
++        boxes[elemSize*(hi-1)+axis] === value) {
++        hi -= 1
++      }
++      hi += 1
++    } else if(pivot < mid) {
++      lo = pivot + 1
++      while(lo < hi &&
++        boxes[elemSize*lo+axis] === value) {
++        lo += 1
++      }
++    } else {
++      break
+     }
+   }
+ 
+-  var outputParts = [];
+-  for (var i = samePartsLength; i < fromParts.length; i++) {
+-    outputParts.push('..');
+-  }
++  //Make sure pivot is at start
++  return partitionStartLessThan(
++    d, axis, 
++    start, mid, boxes, ids,
++    boxes[elemSize*mid+axis])
++}
++},{"./partition":56}],56:[function(require,module,exports){
++'use strict'
+ 
+-  outputParts = outputParts.concat(toParts.slice(samePartsLength));
++module.exports = genPartition
+ 
+-  return outputParts.join('/');
+-};
+-
+-exports.sep = '/';
+-exports.delimiter = ':';
+-
+-exports.dirname = function(path) {
+-  var result = splitPath(path),
+-      root = result[0],
+-      dir = result[1];
+-
+-  if (!root && !dir) {
+-    // No dirname whatsoever
+-    return '.';
+-  }
++var code = 'for(var j=2*a,k=j*c,l=k,m=c,n=b,o=a+b,p=c;d>p;++p,k+=j){var _;if($)if(m===p)m+=1,l+=j;else{for(var s=0;j>s;++s){var t=e[k+s];e[k+s]=e[l],e[l++]=t}var u=f[p];f[p]=f[m],f[m++]=u}}return m'
+ 
+-  if (dir) {
+-    // It has a dirname, strip trailing slash
+-    dir = dir.substr(0, dir.length - 1);
++function genPartition(predicate, args) {
++  var fargs ='abcdef'.split('').concat(args)
++  var reads = []
++  if(predicate.indexOf('lo') >= 0) {
++    reads.push('lo=e[k+n]')
+   }
+-
+-  return root + dir;
+-};
+-
+-
+-exports.basename = function(path, ext) {
+-  var f = splitPath(path)[2];
+-  // TODO: make this comparison case-insensitive on windows?
+-  if (ext && f.substr(-1 * ext.length) === ext) {
+-    f = f.substr(0, f.length - ext.length);
++  if(predicate.indexOf('hi') >= 0) {
++    reads.push('hi=e[k+o]')
+   }
+-  return f;
+-};
+-
+-
+-exports.extname = function(path) {
+-  return splitPath(path)[3];
+-};
+-
+-function filter (xs, f) {
+-    if (xs.filter) return xs.filter(f);
+-    var res = [];
+-    for (var i = 0; i < xs.length; i++) {
+-        if (f(xs[i], i, xs)) res.push(xs[i]);
+-    }
+-    return res;
++  fargs.push(
++    code.replace('_', reads.join())
++        .replace('$', predicate))
++  return Function.apply(void 0, fargs)
+ }
++},{}],57:[function(require,module,exports){
++'use strict';
+ 
+-// String.prototype.substr - negative index don't work in IE8
+-var substr = 'ab'.substr(-1) === 'b'
+-    ? function (str, start, len) { return str.substr(start, len) }
+-    : function (str, start, len) {
+-        if (start < 0) start = str.length + start;
+-        return str.substr(start, len);
+-    }
+-;
++//This code is extracted from ndarray-sort
++//It is inlined here as a temporary workaround
+ 
+-}).call(this,require('_process'))
+-},{"_process":60}],60:[function(require,module,exports){
+-// shim for using process in browser
++module.exports = wrapper;
+ 
+-var process = module.exports = {};
+-var queue = [];
+-var draining = false;
+-var currentQueue;
+-var queueIndex = -1;
++var INSERT_SORT_CUTOFF = 32
+ 
+-function cleanUpNextTick() {
+-    draining = false;
+-    if (currentQueue.length) {
+-        queue = currentQueue.concat(queue);
+-    } else {
+-        queueIndex = -1;
+-    }
+-    if (queue.length) {
+-        drainQueue();
+-    }
++function wrapper(data, n0) {
++  if (n0 <= 4*INSERT_SORT_CUTOFF) {
++    insertionSort(0, n0 - 1, data);
++  } else {
++    quickSort(0, n0 - 1, data);
++  }
+ }
+ 
+-function drainQueue() {
+-    if (draining) {
+-        return;
+-    }
+-    var timeout = setTimeout(cleanUpNextTick);
+-    draining = true;
+-
+-    var len = queue.length;
+-    while(len) {
+-        currentQueue = queue;
+-        queue = [];
+-        while (++queueIndex < len) {
+-            if (currentQueue) {
+-                currentQueue[queueIndex].run();
+-            }
+-        }
+-        queueIndex = -1;
+-        len = queue.length;
++function insertionSort(left, right, data) {
++  var ptr = 2*(left+1)
++  for(var i=left+1; i<=right; ++i) {
++    var a = data[ptr++]
++    var b = data[ptr++]
++    var j = i
++    var jptr = ptr-2
++    while(j-- > left) {
++      var x = data[jptr-2]
++      var y = data[jptr-1]
++      if(x < a) {
++        break
++      } else if(x === a && y < b) {
++        break
++      }
++      data[jptr]   = x
++      data[jptr+1] = y
++      jptr -= 2
+     }
+-    currentQueue = null;
+-    draining = false;
+-    clearTimeout(timeout);
++    data[jptr]   = a
++    data[jptr+1] = b
++  }
+ }
+ 
+-process.nextTick = function (fun) {
+-    var args = new Array(arguments.length - 1);
+-    if (arguments.length > 1) {
+-        for (var i = 1; i < arguments.length; i++) {
+-            args[i - 1] = arguments[i];
+-        }
+-    }
+-    queue.push(new Item(fun, args));
+-    if (queue.length === 1 && !draining) {
+-        setTimeout(drainQueue, 0);
+-    }
+-};
+-
+-// v8 likes predictible objects
+-function Item(fun, array) {
+-    this.fun = fun;
+-    this.array = array;
++function swap(i, j, data) {
++  i *= 2
++  j *= 2
++  var x = data[i]
++  var y = data[i+1]
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++  data[j] = x
++  data[j+1] = y
+ }
+-Item.prototype.run = function () {
+-    this.fun.apply(null, this.array);
+-};
+-process.title = 'browser';
+-process.browser = true;
+-process.env = {};
+-process.argv = [];
+-process.version = ''; // empty string to avoid regexp issues
+-process.versions = {};
+-
+-function noop() {}
+-
+-process.on = noop;
+-process.addListener = noop;
+-process.once = noop;
+-process.off = noop;
+-process.removeListener = noop;
+-process.removeAllListeners = noop;
+-process.emit = noop;
+ 
+-process.binding = function (name) {
+-    throw new Error('process.binding is not supported');
+-};
++function move(i, j, data) {
++  i *= 2
++  j *= 2
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++}
+ 
+-process.cwd = function () { return '/' };
+-process.chdir = function (dir) {
+-    throw new Error('process.chdir is not supported');
+-};
+-process.umask = function() { return 0; };
++function rotate(i, j, k, data) {
++  i *= 2
++  j *= 2
++  k *= 2
++  var x = data[i]
++  var y = data[i+1]
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++  data[j] = data[k]
++  data[j+1] = data[k+1]
++  data[k] = x
++  data[k+1] = y
++}
+ 
+-},{}],61:[function(require,module,exports){
+-module.exports = function isBuffer(arg) {
+-  return arg && typeof arg === 'object'
+-    && typeof arg.copy === 'function'
+-    && typeof arg.fill === 'function'
+-    && typeof arg.readUInt8 === 'function';
++function shufflePivot(i, j, px, py, data) {
++  i *= 2
++  j *= 2
++  data[i] = data[j]
++  data[j] = px
++  data[i+1] = data[j+1]
++  data[j+1] = py
+ }
+-},{}],62:[function(require,module,exports){
+-(function (process,global){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-var formatRegExp = /%[sdj%]/g;
+-exports.format = function(f) {
+-  if (!isString(f)) {
+-    var objects = [];
+-    for (var i = 0; i < arguments.length; i++) {
+-      objects.push(inspect(arguments[i]));
+-    }
+-    return objects.join(' ');
++function compare(i, j, data) {
++  i *= 2
++  j *= 2
++  var x = data[i],
++      y = data[j]
++  if(x < y) {
++    return false
++  } else if(x === y) {
++    return data[i+1] > data[j+1]
+   }
++  return true
++}
+ 
+-  var i = 1;
+-  var args = arguments;
+-  var len = args.length;
+-  var str = String(f).replace(formatRegExp, function(x) {
+-    if (x === '%%') return '%';
+-    if (i >= len) return x;
+-    switch (x) {
+-      case '%s': return String(args[i++]);
+-      case '%d': return Number(args[i++]);
+-      case '%j':
+-        try {
+-          return JSON.stringify(args[i++]);
+-        } catch (_) {
+-          return '[Circular]';
+-        }
+-      default:
+-        return x;
+-    }
+-  });
+-  for (var x = args[i]; i < len; x = args[++i]) {
+-    if (isNull(x) || !isObject(x)) {
+-      str += ' ' + x;
+-    } else {
+-      str += ' ' + inspect(x);
+-    }
++function comparePivot(i, y, b, data) {
++  i *= 2
++  var x = data[i]
++  if(x < y) {
++    return true
++  } else if(x === y) {
++    return data[i+1] < b
+   }
+-  return str;
+-};
+-
++  return false
++}
+ 
+-// Mark that a method should not be used.
+-// Returns a modified function which warns once by default.
+-// If --no-deprecation is set, then it is a no-op.
+-exports.deprecate = function(fn, msg) {
+-  // Allow for deprecating things in the process of starting up.
+-  if (isUndefined(global.process)) {
+-    return function() {
+-      return exports.deprecate(fn, msg).apply(this, arguments);
+-    };
++function quickSort(left, right, data) {
++  var sixth = (right - left + 1) / 6 | 0, 
++      index1 = left + sixth, 
++      index5 = right - sixth, 
++      index3 = left + right >> 1, 
++      index2 = index3 - sixth, 
++      index4 = index3 + sixth, 
++      el1 = index1, 
++      el2 = index2, 
++      el3 = index3, 
++      el4 = index4, 
++      el5 = index5, 
++      less = left + 1, 
++      great = right - 1, 
++      tmp = 0
++  if(compare(el1, el2, data)) {
++    tmp = el1
++    el1 = el2
++    el2 = tmp
+   }
+-
+-  if (process.noDeprecation === true) {
+-    return fn;
++  if(compare(el4, el5, data)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
+   }
+-
+-  var warned = false;
+-  function deprecated() {
+-    if (!warned) {
+-      if (process.throwDeprecation) {
+-        throw new Error(msg);
+-      } else if (process.traceDeprecation) {
+-        console.trace(msg);
+-      } else {
+-        console.error(msg);
+-      }
+-      warned = true;
+-    }
+-    return fn.apply(this, arguments);
++  if(compare(el1, el3, data)) {
++    tmp = el1
++    el1 = el3
++    el3 = tmp
++  }
++  if(compare(el2, el3, data)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el1, el4, data)) {
++    tmp = el1
++    el1 = el4
++    el4 = tmp
++  }
++  if(compare(el3, el4, data)) {
++    tmp = el3
++    el3 = el4
++    el4 = tmp
++  }
++  if(compare(el2, el5, data)) {
++    tmp = el2
++    el2 = el5
++    el5 = tmp
++  }
++  if(compare(el2, el3, data)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el4, el5, data)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
+   }
+ 
+-  return deprecated;
+-};
++  var pivot1X = data[2*el2]
++  var pivot1Y = data[2*el2+1]
++  var pivot2X = data[2*el4]
++  var pivot2Y = data[2*el4+1]
+ 
++  var ptr0 = 2 * el1;
++  var ptr2 = 2 * el3;
++  var ptr4 = 2 * el5;
++  var ptr5 = 2 * index1;
++  var ptr6 = 2 * index3;
++  var ptr7 = 2 * index5;
++  for (var i1 = 0; i1 < 2; ++i1) {
++    var x = data[ptr0+i1];
++    var y = data[ptr2+i1];
++    var z = data[ptr4+i1];
++    data[ptr5+i1] = x;
++    data[ptr6+i1] = y;
++    data[ptr7+i1] = z;
++  }
+ 
+-var debugs = {};
+-var debugEnviron;
+-exports.debuglog = function(set) {
+-  if (isUndefined(debugEnviron))
+-    debugEnviron = process.env.NODE_DEBUG || '';
+-  set = set.toUpperCase();
+-  if (!debugs[set]) {
+-    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
+-      var pid = process.pid;
+-      debugs[set] = function() {
+-        var msg = exports.format.apply(exports, arguments);
+-        console.error('%s %d: %s', set, pid, msg);
+-      };
++  move(index2, left, data)
++  move(index4, right, data)
++  for (var k = less; k <= great; ++k) {
++    if (comparePivot(k, pivot1X, pivot1Y, data)) {
++      if (k !== less) {
++        swap(k, less, data)
++      }
++      ++less;
+     } else {
+-      debugs[set] = function() {};
++      if (!comparePivot(k, pivot2X, pivot2Y, data)) {
++        while (true) {
++          if (!comparePivot(great, pivot2X, pivot2Y, data)) {
++            if (--great < k) {
++              break;
++            }
++            continue;
++          } else {
++            if (comparePivot(great, pivot1X, pivot1Y, data)) {
++              rotate(k, less, great, data)
++              ++less;
++              --great;
++            } else {
++              swap(k, great, data)
++              --great;
++            }
++            break;
++          }
++        }
++      }
+     }
+   }
+-  return debugs[set];
+-};
+-
+-
+-/**
+- * Echos the value of a value. Trys to print the value out
+- * in the best way possible given the different types.
+- *
+- * @param {Object} obj The object to print out.
+- * @param {Object} opts Optional options object that alters the output.
+- */
+-/* legacy: obj, showHidden, depth, colors*/
+-function inspect(obj, opts) {
+-  // default options
+-  var ctx = {
+-    seen: [],
+-    stylize: stylizeNoColor
+-  };
+-  // legacy...
+-  if (arguments.length >= 3) ctx.depth = arguments[2];
+-  if (arguments.length >= 4) ctx.colors = arguments[3];
+-  if (isBoolean(opts)) {
+-    // legacy...
+-    ctx.showHidden = opts;
+-  } else if (opts) {
+-    // got an "options" object
+-    exports._extend(ctx, opts);
++  shufflePivot(left, less-1, pivot1X, pivot1Y, data)
++  shufflePivot(right, great+1, pivot2X, pivot2Y, data)
++  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
++    insertionSort(left, less - 2, data);
++  } else {
++    quickSort(left, less - 2, data);
++  }
++  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
++    insertionSort(great + 2, right, data);
++  } else {
++    quickSort(great + 2, right, data);
++  }
++  if (great - less <= INSERT_SORT_CUTOFF) {
++    insertionSort(less, great, data);
++  } else {
++    quickSort(less, great, data);
+   }
+-  // set default options
+-  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
+-  if (isUndefined(ctx.depth)) ctx.depth = 2;
+-  if (isUndefined(ctx.colors)) ctx.colors = false;
+-  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
+-  if (ctx.colors) ctx.stylize = stylizeWithColor;
+-  return formatValue(ctx, obj, ctx.depth);
+ }
+-exports.inspect = inspect;
++},{}],58:[function(require,module,exports){
++'use strict'
+ 
++module.exports = {
++  init:           sqInit,
++  sweepBipartite: sweepBipartite,
++  sweepComplete:  sweepComplete,
++  scanBipartite:  scanBipartite,
++  scanComplete:   scanComplete
++}
+ 
+-// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
+-inspect.colors = {
+-  'bold' : [1, 22],
+-  'italic' : [3, 23],
+-  'underline' : [4, 24],
+-  'inverse' : [7, 27],
+-  'white' : [37, 39],
+-  'grey' : [90, 39],
+-  'black' : [30, 39],
+-  'blue' : [34, 39],
+-  'cyan' : [36, 39],
+-  'green' : [32, 39],
+-  'magenta' : [35, 39],
+-  'red' : [31, 39],
+-  'yellow' : [33, 39]
+-};
+-
+-// Don't use 'blue' not visible on cmd.exe
+-inspect.styles = {
+-  'special': 'cyan',
+-  'number': 'yellow',
+-  'boolean': 'yellow',
+-  'undefined': 'grey',
+-  'null': 'bold',
+-  'string': 'green',
+-  'date': 'magenta',
+-  // "name": intentionally not styling
+-  'regexp': 'red'
+-};
++var pool  = require('typedarray-pool')
++var bits  = require('bit-twiddle')
++var isort = require('./sort')
+ 
++//Flag for blue
++var BLUE_FLAG = (1<<28)
+ 
+-function stylizeWithColor(str, styleType) {
+-  var style = inspect.styles[styleType];
++//1D sweep event queue stuff (use pool to save space)
++var INIT_CAPACITY      = 1024
++var RED_SWEEP_QUEUE    = pool.mallocInt32(INIT_CAPACITY)
++var RED_SWEEP_INDEX    = pool.mallocInt32(INIT_CAPACITY)
++var BLUE_SWEEP_QUEUE   = pool.mallocInt32(INIT_CAPACITY)
++var BLUE_SWEEP_INDEX   = pool.mallocInt32(INIT_CAPACITY)
++var COMMON_SWEEP_QUEUE = pool.mallocInt32(INIT_CAPACITY)
++var COMMON_SWEEP_INDEX = pool.mallocInt32(INIT_CAPACITY)
++var SWEEP_EVENTS       = pool.mallocDouble(INIT_CAPACITY * 8)
+ 
+-  if (style) {
+-    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
+-           '\u001b[' + inspect.colors[style][1] + 'm';
+-  } else {
+-    return str;
++//Reserves memory for the 1D sweep data structures
++function sqInit(count) {
++  var rcount = bits.nextPow2(count)
++  if(RED_SWEEP_QUEUE.length < rcount) {
++    pool.free(RED_SWEEP_QUEUE)
++    RED_SWEEP_QUEUE = pool.mallocInt32(rcount)
++  }
++  if(RED_SWEEP_INDEX.length < rcount) {
++    pool.free(RED_SWEEP_INDEX)
++    RED_SWEEP_INDEX = pool.mallocInt32(rcount)
++  }
++  if(BLUE_SWEEP_QUEUE.length < rcount) {
++    pool.free(BLUE_SWEEP_QUEUE)
++    BLUE_SWEEP_QUEUE = pool.mallocInt32(rcount)
++  }
++  if(BLUE_SWEEP_INDEX.length < rcount) {
++    pool.free(BLUE_SWEEP_INDEX)
++    BLUE_SWEEP_INDEX = pool.mallocInt32(rcount)
++  }
++  if(COMMON_SWEEP_QUEUE.length < rcount) {
++    pool.free(COMMON_SWEEP_QUEUE)
++    COMMON_SWEEP_QUEUE = pool.mallocInt32(rcount)
++  }
++  if(COMMON_SWEEP_INDEX.length < rcount) {
++    pool.free(COMMON_SWEEP_INDEX)
++    COMMON_SWEEP_INDEX = pool.mallocInt32(rcount)
++  }
++  var eventLength = 8 * rcount
++  if(SWEEP_EVENTS.length < eventLength) {
++    pool.free(SWEEP_EVENTS)
++    SWEEP_EVENTS = pool.mallocDouble(eventLength)
+   }
+ }
+ 
+-
+-function stylizeNoColor(str, styleType) {
+-  return str;
++//Remove an item from the active queue in O(1)
++function sqPop(queue, index, count, item) {
++  var idx = index[item]
++  var top = queue[count-1]
++  queue[idx] = top
++  index[top] = idx
+ }
+ 
+-
+-function arrayToHash(array) {
+-  var hash = {};
+-
+-  array.forEach(function(val, idx) {
+-    hash[val] = true;
+-  });
+-
+-  return hash;
++//Insert an item into the active queue in O(1)
++function sqPush(queue, index, count, item) {
++  queue[count] = item
++  index[item]  = count
+ }
+ 
++//Recursion base case: use 1D sweep algorithm
++function sweepBipartite(
++    d, visit,
++    redStart,  redEnd, red, redIndex,
++    blueStart, blueEnd, blue, blueIndex) {
+ 
+-function formatValue(ctx, value, recurseTimes) {
+-  // Provide a hook for user-specified inspect functions.
+-  // Check that value is an object with an inspect function on it
+-  if (ctx.customInspect &&
+-      value &&
+-      isFunction(value.inspect) &&
+-      // Filter out the util module, it's inspect function is special
+-      value.inspect !== exports.inspect &&
+-      // Also filter out any prototype objects using the circular check.
+-      !(value.constructor && value.constructor.prototype === value)) {
+-    var ret = value.inspect(recurseTimes, ctx);
+-    if (!isString(ret)) {
+-      ret = formatValue(ctx, ret, recurseTimes);
+-    }
+-    return ret;
+-  }
+-
+-  // Primitive types cannot have properties
+-  var primitive = formatPrimitive(ctx, value);
+-  if (primitive) {
+-    return primitive;
+-  }
+-
+-  // Look up the keys of the object.
+-  var keys = Object.keys(value);
+-  var visibleKeys = arrayToHash(keys);
++  //store events as pairs [coordinate, idx]
++  //
++  //  red create:  -(idx+1)
++  //  red destroy: idx
++  //  blue create: -(idx+BLUE_FLAG)
++  //  blue destroy: idx+BLUE_FLAG
++  //
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = d-1
++  var iend     = elemSize-1
+ 
+-  if (ctx.showHidden) {
+-    keys = Object.getOwnPropertyNames(value);
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = redIndex[i]
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -(idx+1)
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
+   }
+ 
+-  // IE doesn't make error fields non-enumerable
+-  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
+-  if (isError(value)
+-      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
+-    return formatError(value);
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = blueIndex[i]+BLUE_FLAG
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
+   }
+ 
+-  // Some type of object without properties can be shortcutted.
+-  if (keys.length === 0) {
+-    if (isFunction(value)) {
+-      var name = value.name ? ': ' + value.name : '';
+-      return ctx.stylize('[Function' + name + ']', 'special');
+-    }
+-    if (isRegExp(value)) {
+-      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
+-    }
+-    if (isDate(value)) {
+-      return ctx.stylize(Date.prototype.toString.call(value), 'date');
+-    }
+-    if (isError(value)) {
+-      return formatError(value);
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive  = 0
++  var blueActive = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e >= BLUE_FLAG) {
++      //blue destroy event
++      e = (e-BLUE_FLAG)|0
++      sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, e)
++    } else if(e >= 0) {
++      //red destroy event
++      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e)
++    } else if(e <= -BLUE_FLAG) {
++      //blue create event
++      e = (-e-BLUE_FLAG)|0
++      for(var j=0; j<redActive; ++j) {
++        var retval = visit(RED_SWEEP_QUEUE[j], e)
++        if(retval !== void 0) {
++          return retval
++        }
++      }
++      sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, e)
++    } else {
++      //red create event
++      e = (-e-1)|0
++      for(var j=0; j<blueActive; ++j) {
++        var retval = visit(e, BLUE_SWEEP_QUEUE[j])
++        if(retval !== void 0) {
++          return retval
++        }
++      }
++      sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, e)
+     }
+   }
++}
+ 
+-  var base = '', array = false, braces = ['{', '}'];
++//Complete sweep
++function sweepComplete(d, visit, 
++  redStart, redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
+ 
+-  // Make Array say that they are Array
+-  if (isArray(value)) {
+-    array = true;
+-    braces = ['[', ']'];
+-  }
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = d-1
++  var iend     = elemSize-1
+ 
+-  // Make functions say that they are functions
+-  if (isFunction(value)) {
+-    var n = value.name ? ': ' + value.name : '';
+-    base = ' [Function' + n + ']';
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = (redIndex[i]+1)<<1
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
+   }
+ 
+-  // Make RegExps say that they are RegExps
+-  if (isRegExp(value)) {
+-    base = ' ' + RegExp.prototype.toString.call(value);
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = (blueIndex[i]+1)<<1
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = (-idx)|1
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx|1
+   }
+ 
+-  // Make dates with properties first say the date
+-  if (isDate(value)) {
+-    base = ' ' + Date.prototype.toUTCString.call(value);
+-  }
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  var blueActive   = 0
++  var commonActive = 0
++  for(var i=0; i<n; ++i) {
++    var e     = SWEEP_EVENTS[2*i+1]|0
++    var color = e&1
++    if(i < n-1 && (e>>1) === (SWEEP_EVENTS[2*i+3]>>1)) {
++      color = 2
++      i += 1
++    }
++    
++    if(e < 0) {
++      //Create event
++      var id = -(e>>1) - 1
+ 
+-  // Make error with message first say the error
+-  if (isError(value)) {
+-    base = ' ' + formatError(value);
+-  }
++      //Intersect with common
++      for(var j=0; j<commonActive; ++j) {
++        var retval = visit(COMMON_SWEEP_QUEUE[j], id)
++        if(retval !== void 0) {
++          return retval
++        }
++      }
+ 
+-  if (keys.length === 0 && (!array || value.length == 0)) {
+-    return braces[0] + base + braces[1];
+-  }
++      if(color !== 0) {
++        //Intersect with red
++        for(var j=0; j<redActive; ++j) {
++          var retval = visit(RED_SWEEP_QUEUE[j], id)
++          if(retval !== void 0) {
++            return retval
++          }
++        }
++      }
+ 
+-  if (recurseTimes < 0) {
+-    if (isRegExp(value)) {
+-      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
++      if(color !== 1) {
++        //Intersect with blue
++        for(var j=0; j<blueActive; ++j) {
++          var retval = visit(BLUE_SWEEP_QUEUE[j], id)
++          if(retval !== void 0) {
++            return retval
++          }
++        }
++      }
++
++      if(color === 0) {
++        //Red
++        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, id)
++      } else if(color === 1) {
++        //Blue
++        sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, id)
++      } else if(color === 2) {
++        //Both
++        sqPush(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive++, id)
++      }
+     } else {
+-      return ctx.stylize('[Object]', 'special');
++      //Destroy event
++      var id = (e>>1) - 1
++      if(color === 0) {
++        //Red
++        sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, id)
++      } else if(color === 1) {
++        //Blue
++        sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, id)
++      } else if(color === 2) {
++        //Both
++        sqPop(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive--, id)
++      }
+     }
+   }
++}
+ 
+-  ctx.seen.push(value);
++//Sweep and prune/scanline algorithm:
++//  Scan along axis, detect intersections
++//  Brute force all boxes along axis
++function scanBipartite(
++  d, axis, visit, flip,
++  redStart,  redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
++  
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = axis
++  var iend     = axis+d
+ 
+-  var output;
+-  if (array) {
+-    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
++  var redShift  = 1
++  var blueShift = 1
++  if(flip) {
++    blueShift = BLUE_FLAG
+   } else {
+-    output = keys.map(function(key) {
+-      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
+-    });
++    redShift  = BLUE_FLAG
+   }
+ 
+-  ctx.seen.pop();
+-
+-  return reduceToSingleString(output, base, braces);
+-}
+-
+-
+-function formatPrimitive(ctx, value) {
+-  if (isUndefined(value))
+-    return ctx.stylize('undefined', 'undefined');
+-  if (isString(value)) {
+-    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
+-                                             .replace(/'/g, "\\'")
+-                                             .replace(/\\"/g, '"') + '\'';
+-    return ctx.stylize(simple, 'string');
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = i + redShift
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
++  }
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = i + blueShift
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
+   }
+-  if (isNumber(value))
+-    return ctx.stylize('' + value, 'number');
+-  if (isBoolean(value))
+-    return ctx.stylize('' + value, 'boolean');
+-  // For some reason typeof null is "object", so special case here.
+-  if (isNull(value))
+-    return ctx.stylize('null', 'null');
+-}
+-
+ 
+-function formatError(value) {
+-  return '[' + Error.prototype.toString.call(value) + ']';
+-}
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e < 0) {
++      var idx   = -e
++      var isRed = false
++      if(idx >= BLUE_FLAG) {
++        isRed = !flip
++        idx -= BLUE_FLAG 
++      } else {
++        isRed = !!flip
++        idx -= 1
++      }
++      if(isRed) {
++        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, idx)
++      } else {
++        var blueId  = blueIndex[idx]
++        var bluePtr = elemSize * idx
++        
++        var b0 = blue[bluePtr+axis+1]
++        var b1 = blue[bluePtr+axis+1+d]
+ 
++red_loop:
++        for(var j=0; j<redActive; ++j) {
++          var oidx   = RED_SWEEP_QUEUE[j]
++          var redPtr = elemSize * oidx
+ 
+-function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
+-  var output = [];
+-  for (var i = 0, l = value.length; i < l; ++i) {
+-    if (hasOwnProperty(value, String(i))) {
+-      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
+-          String(i), true));
+-    } else {
+-      output.push('');
+-    }
+-  }
+-  keys.forEach(function(key) {
+-    if (!key.match(/^\d+$/)) {
+-      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
+-          key, true));
+-    }
+-  });
+-  return output;
+-}
++          if(b1 < red[redPtr+axis+1] || 
++             red[redPtr+axis+1+d] < b0) {
++            continue
++          }
+ 
++          for(var k=axis+2; k<d; ++k) {
++            if(blue[bluePtr + k + d] < red[redPtr + k] || 
++               red[redPtr + k + d] < blue[bluePtr + k]) {
++              continue red_loop
++            }
++          }
+ 
+-function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
+-  var name, str, desc;
+-  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
+-  if (desc.get) {
+-    if (desc.set) {
+-      str = ctx.stylize('[Getter/Setter]', 'special');
+-    } else {
+-      str = ctx.stylize('[Getter]', 'special');
+-    }
+-  } else {
+-    if (desc.set) {
+-      str = ctx.stylize('[Setter]', 'special');
+-    }
+-  }
+-  if (!hasOwnProperty(visibleKeys, key)) {
+-    name = '[' + key + ']';
+-  }
+-  if (!str) {
+-    if (ctx.seen.indexOf(desc.value) < 0) {
+-      if (isNull(recurseTimes)) {
+-        str = formatValue(ctx, desc.value, null);
+-      } else {
+-        str = formatValue(ctx, desc.value, recurseTimes - 1);
+-      }
+-      if (str.indexOf('\n') > -1) {
+-        if (array) {
+-          str = str.split('\n').map(function(line) {
+-            return '  ' + line;
+-          }).join('\n').substr(2);
+-        } else {
+-          str = '\n' + str.split('\n').map(function(line) {
+-            return '   ' + line;
+-          }).join('\n');
++          var redId  = redIndex[oidx]
++          var retval
++          if(flip) {
++            retval = visit(blueId, redId)
++          } else {
++            retval = visit(redId, blueId)
++          }
++          if(retval !== void 0) {
++            return retval 
++          }
+         }
+       }
+     } else {
+-      str = ctx.stylize('[Circular]', 'special');
+-    }
+-  }
+-  if (isUndefined(name)) {
+-    if (array && key.match(/^\d+$/)) {
+-      return str;
+-    }
+-    name = JSON.stringify('' + key);
+-    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
+-      name = name.substr(1, name.length - 2);
+-      name = ctx.stylize(name, 'name');
+-    } else {
+-      name = name.replace(/'/g, "\\'")
+-                 .replace(/\\"/g, '"')
+-                 .replace(/(^"|"$)/g, "'");
+-      name = ctx.stylize(name, 'string');
++      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e - redShift)
+     }
+   }
+-
+-  return name + ': ' + str;
+ }
+ 
++function scanComplete(
++  d, axis, visit,
++  redStart,  redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
+ 
+-function reduceToSingleString(output, base, braces) {
+-  var numLinesEst = 0;
+-  var length = output.reduce(function(prev, cur) {
+-    numLinesEst++;
+-    if (cur.indexOf('\n') >= 0) numLinesEst++;
+-    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
+-  }, 0);
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = axis
++  var iend     = axis+d
+ 
+-  if (length > 60) {
+-    return braces[0] +
+-           (base === '' ? '' : base + '\n ') +
+-           ' ' +
+-           output.join(',\n  ') +
+-           ' ' +
+-           braces[1];
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = i + BLUE_FLAG
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
++  }
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = i + 1
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
+   }
+ 
+-  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
+-}
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e < 0) {
++      var idx   = -e
++      if(idx >= BLUE_FLAG) {
++        RED_SWEEP_QUEUE[redActive++] = idx - BLUE_FLAG
++      } else {
++        idx -= 1
++        var blueId  = blueIndex[idx]
++        var bluePtr = elemSize * idx
+ 
++        var b0 = blue[bluePtr+axis+1]
++        var b1 = blue[bluePtr+axis+1+d]
+ 
+-// NOTE: These type checking functions intentionally don't use `instanceof`
+-// because it is fragile and can be easily faked with `Object.create()`.
+-function isArray(ar) {
+-  return Array.isArray(ar);
+-}
+-exports.isArray = isArray;
++red_loop:
++        for(var j=0; j<redActive; ++j) {
++          var oidx   = RED_SWEEP_QUEUE[j]
++          var redId  = redIndex[oidx]
+ 
+-function isBoolean(arg) {
+-  return typeof arg === 'boolean';
+-}
+-exports.isBoolean = isBoolean;
++          if(redId === blueId) {
++            break
++          }
+ 
+-function isNull(arg) {
+-  return arg === null;
+-}
+-exports.isNull = isNull;
++          var redPtr = elemSize * oidx
++          if(b1 < red[redPtr+axis+1] || 
++            red[redPtr+axis+1+d] < b0) {
++            continue
++          }
++          for(var k=axis+2; k<d; ++k) {
++            if(blue[bluePtr + k + d] < red[redPtr + k] || 
++               red[redPtr + k + d]   < blue[bluePtr + k]) {
++              continue red_loop
++            }
++          }
+ 
+-function isNullOrUndefined(arg) {
+-  return arg == null;
++          var retval = visit(redId, blueId)
++          if(retval !== void 0) {
++            return retval 
++          }
++        }
++      }
++    } else {
++      var idx = e - BLUE_FLAG
++      for(var j=redActive-1; j>=0; --j) {
++        if(RED_SWEEP_QUEUE[j] === idx) {
++          for(var k=j+1; k<redActive; ++k) {
++            RED_SWEEP_QUEUE[k-1] = RED_SWEEP_QUEUE[k]
++          }
++          break
++        }
++      }
++      --redActive
++    }
++  }
+ }
+-exports.isNullOrUndefined = isNullOrUndefined;
++},{"./sort":57,"bit-twiddle":49,"typedarray-pool":449}],59:[function(require,module,exports){
++(function (global){
++/*!
++ * The buffer module from node.js, for the browser.
++ *
++ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
++ * @license  MIT
++ */
++/* eslint-disable no-proto */
+ 
+-function isNumber(arg) {
+-  return typeof arg === 'number';
+-}
+-exports.isNumber = isNumber;
++'use strict'
+ 
+-function isString(arg) {
+-  return typeof arg === 'string';
+-}
+-exports.isString = isString;
++var base64 = require('base64-js')
++var ieee754 = require('ieee754')
++var isArray = require('isarray')
+ 
+-function isSymbol(arg) {
+-  return typeof arg === 'symbol';
+-}
+-exports.isSymbol = isSymbol;
++exports.Buffer = Buffer
++exports.SlowBuffer = SlowBuffer
++exports.INSPECT_MAX_BYTES = 50
+ 
+-function isUndefined(arg) {
+-  return arg === void 0;
+-}
+-exports.isUndefined = isUndefined;
++/**
++ * If `Buffer.TYPED_ARRAY_SUPPORT`:
++ *   === true    Use Uint8Array implementation (fastest)
++ *   === false   Use Object implementation (most compatible, even IE6)
++ *
++ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
++ * Opera 11.6+, iOS 4.2+.
++ *
++ * Due to various browser bugs, sometimes the Object implementation will be used even
++ * when the browser supports typed arrays.
++ *
++ * Note:
++ *
++ *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
++ *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
++ *
++ *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
++ *
++ *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
++ *     incorrect length in some situations.
+ 
+-function isRegExp(re) {
+-  return isObject(re) && objectToString(re) === '[object RegExp]';
+-}
+-exports.isRegExp = isRegExp;
++ * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
++ * get the Object implementation, which is slower but behaves correctly.
++ */
++Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
++  ? global.TYPED_ARRAY_SUPPORT
++  : typedArraySupport()
+ 
+-function isObject(arg) {
+-  return typeof arg === 'object' && arg !== null;
+-}
+-exports.isObject = isObject;
++/*
++ * Export kMaxLength after typed array support is determined.
++ */
++exports.kMaxLength = kMaxLength()
+ 
+-function isDate(d) {
+-  return isObject(d) && objectToString(d) === '[object Date]';
++function typedArraySupport () {
++  try {
++    var arr = new Uint8Array(1)
++    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
++    return arr.foo() === 42 && // typed array instances can be augmented
++        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
++        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
++  } catch (e) {
++    return false
++  }
+ }
+-exports.isDate = isDate;
+ 
+-function isError(e) {
+-  return isObject(e) &&
+-      (objectToString(e) === '[object Error]' || e instanceof Error);
++function kMaxLength () {
++  return Buffer.TYPED_ARRAY_SUPPORT
++    ? 0x7fffffff
++    : 0x3fffffff
+ }
+-exports.isError = isError;
+ 
+-function isFunction(arg) {
+-  return typeof arg === 'function';
+-}
+-exports.isFunction = isFunction;
++function createBuffer (that, length) {
++  if (kMaxLength() < length) {
++    throw new RangeError('Invalid typed array length')
++  }
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    // Return an augmented `Uint8Array` instance, for best performance
++    that = new Uint8Array(length)
++    that.__proto__ = Buffer.prototype
++  } else {
++    // Fallback: Return an object instance of the Buffer class
++    if (that === null) {
++      that = new Buffer(length)
++    }
++    that.length = length
++  }
+ 
+-function isPrimitive(arg) {
+-  return arg === null ||
+-         typeof arg === 'boolean' ||
+-         typeof arg === 'number' ||
+-         typeof arg === 'string' ||
+-         typeof arg === 'symbol' ||  // ES6 symbol
+-         typeof arg === 'undefined';
++  return that
+ }
+-exports.isPrimitive = isPrimitive;
+-
+-exports.isBuffer = require('./support/isBuffer');
+ 
+-function objectToString(o) {
+-  return Object.prototype.toString.call(o);
+-}
++/**
++ * The Buffer constructor returns instances of `Uint8Array` that have their
++ * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
++ * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
++ * and the `Uint8Array` methods. Square bracket notation works as expected -- it
++ * returns a single octet.
++ *
++ * The `Uint8Array` prototype remains unmodified.
++ */
+ 
++function Buffer (arg, encodingOrOffset, length) {
++  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
++    return new Buffer(arg, encodingOrOffset, length)
++  }
+ 
+-function pad(n) {
+-  return n < 10 ? '0' + n.toString(10) : n.toString(10);
++  // Common case.
++  if (typeof arg === 'number') {
++    if (typeof encodingOrOffset === 'string') {
++      throw new Error(
++        'If encoding is specified then the first argument must be a string'
++      )
++    }
++    return allocUnsafe(this, arg)
++  }
++  return from(this, arg, encodingOrOffset, length)
+ }
+ 
++Buffer.poolSize = 8192 // not used by this implementation
+ 
+-var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
+-              'Oct', 'Nov', 'Dec'];
+-
+-// 26 Feb 16:19:34
+-function timestamp() {
+-  var d = new Date();
+-  var time = [pad(d.getHours()),
+-              pad(d.getMinutes()),
+-              pad(d.getSeconds())].join(':');
+-  return [d.getDate(), months[d.getMonth()], time].join(' ');
++// TODO: Legacy, not needed anymore. Remove in next major version.
++Buffer._augment = function (arr) {
++  arr.__proto__ = Buffer.prototype
++  return arr
+ }
+ 
++function from (that, value, encodingOrOffset, length) {
++  if (typeof value === 'number') {
++    throw new TypeError('"value" argument must not be a number')
++  }
+ 
+-// log is just a thin wrapper to console.log that prepends a timestamp
+-exports.log = function() {
+-  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
+-};
+-
+-
+-/**
+- * Inherit the prototype methods from one constructor into another.
+- *
+- * The Function.prototype.inherits from lang.js rewritten as a standalone
+- * function (not on Function.prototype). NOTE: If this file is to be loaded
+- * during bootstrapping this function needs to be rewritten using some native
+- * functions as prototype setup using normal JavaScript does not work as
+- * expected during bootstrapping (see mirror.js in r114903).
+- *
+- * @param {function} ctor Constructor function which needs to inherit the
+- *     prototype.
+- * @param {function} superCtor Constructor function to inherit prototype from.
+- */
+-exports.inherits = require('inherits');
+-
+-exports._extend = function(origin, add) {
+-  // Don't do anything if add isn't an object
+-  if (!add || !isObject(add)) return origin;
++  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
++    return fromArrayBuffer(that, value, encodingOrOffset, length)
++  }
+ 
+-  var keys = Object.keys(add);
+-  var i = keys.length;
+-  while (i--) {
+-    origin[keys[i]] = add[keys[i]];
++  if (typeof value === 'string') {
++    return fromString(that, value, encodingOrOffset)
+   }
+-  return origin;
+-};
+ 
+-function hasOwnProperty(obj, prop) {
+-  return Object.prototype.hasOwnProperty.call(obj, prop);
++  return fromObject(that, value)
+ }
+ 
+-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"./support/isBuffer":61,"_process":60,"inherits":58}],63:[function(require,module,exports){
+-'use strict'
+-
+-var monotoneTriangulate = require('./lib/monotone')
+-var makeIndex = require('./lib/triangulation')
+-var delaunayFlip = require('./lib/delaunay')
+-var filterTriangulation = require('./lib/filter')
++/**
++ * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
++ * if value is a number.
++ * Buffer.from(str[, encoding])
++ * Buffer.from(array)
++ * Buffer.from(buffer)
++ * Buffer.from(arrayBuffer[, byteOffset[, length]])
++ **/
++Buffer.from = function (value, encodingOrOffset, length) {
++  return from(null, value, encodingOrOffset, length)
++}
+ 
+-module.exports = cdt2d
++if (Buffer.TYPED_ARRAY_SUPPORT) {
++  Buffer.prototype.__proto__ = Uint8Array.prototype
++  Buffer.__proto__ = Uint8Array
++  if (typeof Symbol !== 'undefined' && Symbol.species &&
++      Buffer[Symbol.species] === Buffer) {
++    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
++    Object.defineProperty(Buffer, Symbol.species, {
++      value: null,
++      configurable: true
++    })
++  }
++}
+ 
+-function canonicalizeEdge(e) {
+-  return [Math.min(e[0], e[1]), Math.max(e[0], e[1])]
++function assertSize (size) {
++  if (typeof size !== 'number') {
++    throw new TypeError('"size" argument must be a number')
++  } else if (size < 0) {
++    throw new RangeError('"size" argument must not be negative')
++  }
+ }
+ 
+-function compareEdge(a, b) {
+-  return a[0]-b[0] || a[1]-b[1]
++function alloc (that, size, fill, encoding) {
++  assertSize(size)
++  if (size <= 0) {
++    return createBuffer(that, size)
++  }
++  if (fill !== undefined) {
++    // Only pay attention to encoding if it's a string. This
++    // prevents accidentally sending in a number that would
++    // be interpretted as a start offset.
++    return typeof encoding === 'string'
++      ? createBuffer(that, size).fill(fill, encoding)
++      : createBuffer(that, size).fill(fill)
++  }
++  return createBuffer(that, size)
+ }
+ 
+-function canonicalizeEdges(edges) {
+-  return edges.map(canonicalizeEdge).sort(compareEdge)
++/**
++ * Creates a new filled Buffer instance.
++ * alloc(size[, fill[, encoding]])
++ **/
++Buffer.alloc = function (size, fill, encoding) {
++  return alloc(null, size, fill, encoding)
+ }
+ 
+-function getDefault(options, property, dflt) {
+-  if(property in options) {
+-    return options[property]
++function allocUnsafe (that, size) {
++  assertSize(size)
++  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) {
++    for (var i = 0; i < size; ++i) {
++      that[i] = 0
++    }
+   }
+-  return dflt
++  return that
+ }
+ 
+-function cdt2d(points, edges, options) {
++/**
++ * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
++ * */
++Buffer.allocUnsafe = function (size) {
++  return allocUnsafe(null, size)
++}
++/**
++ * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
++ */
++Buffer.allocUnsafeSlow = function (size) {
++  return allocUnsafe(null, size)
++}
+ 
+-  if(!Array.isArray(edges)) {
+-    options = edges || {}
+-    edges = []
+-  } else {
+-    options = options || {}
+-    edges = edges || []
++function fromString (that, string, encoding) {
++  if (typeof encoding !== 'string' || encoding === '') {
++    encoding = 'utf8'
+   }
+ 
+-  //Parse out options
+-  var delaunay = !!getDefault(options, 'delaunay', true)
+-  var interior = !!getDefault(options, 'interior', true)
+-  var exterior = !!getDefault(options, 'exterior', true)
+-  var infinity = !!getDefault(options, 'infinity', false)
+-
+-  //Handle trivial case
+-  if((!interior && !exterior) || points.length === 0) {
+-    return []
++  if (!Buffer.isEncoding(encoding)) {
++    throw new TypeError('"encoding" must be a valid string encoding')
+   }
+ 
+-  //Construct initial triangulation
+-  var cells = monotoneTriangulate(points, edges)
++  var length = byteLength(string, encoding) | 0
++  that = createBuffer(that, length)
+ 
+-  //If delaunay refinement needed, then improve quality by edge flipping
+-  if(delaunay || interior !== exterior || infinity) {
++  var actual = that.write(string, encoding)
+ 
+-    //Index all of the cells to support fast neighborhood queries
+-    var triangulation = makeIndex(points.length, canonicalizeEdges(edges))
+-    for(var i=0; i<cells.length; ++i) {
+-      var f = cells[i]
+-      triangulation.addTriangle(f[0], f[1], f[2])
+-    }
++  if (actual !== length) {
++    // Writing a hex string, for example, that contains invalid characters will
++    // cause everything after the first invalid character to be ignored. (e.g.
++    // 'abxxcd' will be treated as 'ab')
++    that = that.slice(0, actual)
++  }
+ 
+-    //Run edge flipping
+-    if(delaunay) {
+-      delaunayFlip(points, triangulation)
+-    }
++  return that
++}
+ 
+-    //Filter points
+-    if(!exterior) {
+-      return filterTriangulation(triangulation, -1)
+-    } else if(!interior) {
+-      return filterTriangulation(triangulation,  1, infinity)
+-    } else if(infinity) {
+-      return filterTriangulation(triangulation, 0, infinity)
+-    } else {
+-      return triangulation.cells()
+-    }
+-    
+-  } else {
+-    return cells
++function fromArrayLike (that, array) {
++  var length = array.length < 0 ? 0 : checked(array.length) | 0
++  that = createBuffer(that, length)
++  for (var i = 0; i < length; i += 1) {
++    that[i] = array[i] & 255
+   }
++  return that
+ }
+ 
+-},{"./lib/delaunay":64,"./lib/filter":65,"./lib/monotone":66,"./lib/triangulation":67}],64:[function(require,module,exports){
+-'use strict'
+-
+-var inCircle = require('robust-in-sphere')[4]
+-var bsearch = require('binary-search-bounds')
+-
+-module.exports = delaunayRefine
+-
+-function testFlip(points, triangulation, stack, a, b, x) {
+-  var y = triangulation.opposite(a, b)
++function fromArrayBuffer (that, array, byteOffset, length) {
++  array.byteLength // this throws if `array` is not a valid ArrayBuffer
+ 
+-  //Test boundary edge
+-  if(y < 0) {
+-    return
++  if (byteOffset < 0 || array.byteLength < byteOffset) {
++    throw new RangeError('\'offset\' is out of bounds')
+   }
+ 
+-  //Swap edge if order flipped
+-  if(b < a) {
+-    var tmp = a
+-    a = b
+-    b = tmp
+-    tmp = x
+-    x = y
+-    y = tmp
++  if (array.byteLength < byteOffset + (length || 0)) {
++    throw new RangeError('\'length\' is out of bounds')
+   }
+ 
+-  //Test if edge is constrained
+-  if(triangulation.isConstraint(a, b)) {
+-    return
++  if (byteOffset === undefined && length === undefined) {
++    array = new Uint8Array(array)
++  } else if (length === undefined) {
++    array = new Uint8Array(array, byteOffset)
++  } else {
++    array = new Uint8Array(array, byteOffset, length)
+   }
+ 
+-  //Test if edge is delaunay
+-  if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
+-    stack.push(a, b)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    // Return an augmented `Uint8Array` instance, for best performance
++    that = array
++    that.__proto__ = Buffer.prototype
++  } else {
++    // Fallback: Return an object instance of the Buffer class
++    that = fromArrayLike(that, array)
+   }
++  return that
+ }
+ 
+-//Assume edges are sorted lexicographically
+-function delaunayRefine(points, triangulation) {
+-  var stack = []
+-
+-  var numPoints = points.length
+-  var stars = triangulation.stars
+-  for(var a=0; a<numPoints; ++a) {
+-    var star = stars[a]
+-    for(var j=1; j<star.length; j+=2) {
+-      var b = star[j]
+-
+-      //If order is not consistent, then skip edge
+-      if(b < a) {
+-        continue
+-      }
+-
+-      //Check if edge is constrained
+-      if(triangulation.isConstraint(a, b)) {
+-        continue
+-      }
+-
+-      //Find opposite edge
+-      var x = star[j-1], y = -1
+-      for(var k=1; k<star.length; k+=2) {
+-        if(star[k-1] === b) {
+-          y = star[k]
+-          break
+-        }
+-      }
+-
+-      //If this is a boundary edge, don't flip it
+-      if(y < 0) {
+-        continue
+-      }
++function fromObject (that, obj) {
++  if (Buffer.isBuffer(obj)) {
++    var len = checked(obj.length) | 0
++    that = createBuffer(that, len)
+ 
+-      //If edge is in circle, flip it
+-      if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
+-        stack.push(a, b)
+-      }
++    if (that.length === 0) {
++      return that
+     }
+-  }
+ 
+-  while(stack.length > 0) {
+-    var b = stack.pop()
+-    var a = stack.pop()
++    obj.copy(that, 0, 0, len)
++    return that
++  }
+ 
+-    //Find opposite pairs
+-    var x = -1, y = -1
+-    var star = stars[a]
+-    for(var i=1; i<star.length; i+=2) {
+-      var s = star[i-1]
+-      var t = star[i]
+-      if(s === b) {
+-        y = t
+-      } else if(t === b) {
+-        x = s
++  if (obj) {
++    if ((typeof ArrayBuffer !== 'undefined' &&
++        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
++      if (typeof obj.length !== 'number' || isnan(obj.length)) {
++        return createBuffer(that, 0)
+       }
++      return fromArrayLike(that, obj)
+     }
+ 
+-    //If x/y are both valid then skip edge
+-    if(x < 0 || y < 0) {
+-      continue
+-    }
+-
+-    //If edge is now delaunay, then don't flip it
+-    if(inCircle(points[a], points[b], points[x], points[y]) >= 0) {
+-      continue
++    if (obj.type === 'Buffer' && isArray(obj.data)) {
++      return fromArrayLike(that, obj.data)
+     }
++  }
+ 
+-    //Flip the edge
+-    triangulation.flip(a, b)
++  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
++}
+ 
+-    //Test flipping neighboring edges
+-    testFlip(points, triangulation, stack, x, a, y)
+-    testFlip(points, triangulation, stack, a, y, x)
+-    testFlip(points, triangulation, stack, y, b, x)
+-    testFlip(points, triangulation, stack, b, x, y)
++function checked (length) {
++  // Note: cannot use `length < kMaxLength()` here because that fails when
++  // length is NaN (which is otherwise coerced to zero.)
++  if (length >= kMaxLength()) {
++    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
++                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
+   }
++  return length | 0
+ }
+ 
+-},{"binary-search-bounds":68,"robust-in-sphere":69}],65:[function(require,module,exports){
+-'use strict'
+-
+-var bsearch = require('binary-search-bounds')
+-
+-module.exports = classifyFaces
++function SlowBuffer (length) {
++  if (+length != length) { // eslint-disable-line eqeqeq
++    length = 0
++  }
++  return Buffer.alloc(+length)
++}
+ 
+-function FaceIndex(cells, neighbor, constraint, flags, active, next, boundary) {
+-  this.cells       = cells
+-  this.neighbor    = neighbor
+-  this.flags       = flags
+-  this.constraint  = constraint
+-  this.active      = active
+-  this.next        = next
+-  this.boundary    = boundary
++Buffer.isBuffer = function isBuffer (b) {
++  return !!(b != null && b._isBuffer)
+ }
+ 
+-var proto = FaceIndex.prototype
++Buffer.compare = function compare (a, b) {
++  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
++    throw new TypeError('Arguments must be Buffers')
++  }
+ 
+-function compareCell(a, b) {
+-  return a[0] - b[0] ||
+-         a[1] - b[1] ||
+-         a[2] - b[2]
+-}
++  if (a === b) return 0
+ 
+-proto.locate = (function() {
+-  var key = [0,0,0]
+-  return function(a, b, c) {
+-    var x = a, y = b, z = c
+-    if(b < c) {
+-      if(b < a) {
+-        x = b
+-        y = c
+-        z = a
+-      }
+-    } else if(c < a) {
+-      x = c
+-      y = a
+-      z = b
+-    }
+-    if(x < 0) {
+-      return -1
++  var x = a.length
++  var y = b.length
++
++  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
++    if (a[i] !== b[i]) {
++      x = a[i]
++      y = b[i]
++      break
+     }
+-    key[0] = x
+-    key[1] = y
+-    key[2] = z
+-    return bsearch.eq(this.cells, key, compareCell)
+   }
+-})()
+ 
+-function indexCells(triangulation, infinity) {
+-  //First get cells and canonicalize
+-  var cells = triangulation.cells()
+-  var nc = cells.length
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    var x = c[0], y = c[1], z = c[2]
+-    if(y < z) {
+-      if(y < x) {
+-        c[0] = y
+-        c[1] = z
+-        c[2] = x
+-      }
+-    } else if(z < x) {
+-      c[0] = z
+-      c[1] = x
+-      c[2] = y
+-    }
++  if (x < y) return -1
++  if (y < x) return 1
++  return 0
++}
++
++Buffer.isEncoding = function isEncoding (encoding) {
++  switch (String(encoding).toLowerCase()) {
++    case 'hex':
++    case 'utf8':
++    case 'utf-8':
++    case 'ascii':
++    case 'latin1':
++    case 'binary':
++    case 'base64':
++    case 'ucs2':
++    case 'ucs-2':
++    case 'utf16le':
++    case 'utf-16le':
++      return true
++    default:
++      return false
+   }
+-  cells.sort(compareCell)
++}
+ 
+-  //Initialize flag array
+-  var flags = new Array(nc)
+-  for(var i=0; i<flags.length; ++i) {
+-    flags[i] = 0
++Buffer.concat = function concat (list, length) {
++  if (!isArray(list)) {
++    throw new TypeError('"list" argument must be an Array of Buffers')
+   }
+ 
+-  //Build neighbor index, initialize queues
+-  var active = []
+-  var next   = []
+-  var neighbor = new Array(3*nc)
+-  var constraint = new Array(3*nc)
+-  var boundary = null
+-  if(infinity) {
+-    boundary = []
++  if (list.length === 0) {
++    return Buffer.alloc(0)
+   }
+-  var index = new FaceIndex(
+-    cells,
+-    neighbor,
+-    constraint,
+-    flags,
+-    active,
+-    next,
+-    boundary)
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<3; ++j) {
+-      var x = c[j], y = c[(j+1)%3]
+-      var a = neighbor[3*i+j] = index.locate(y, x, triangulation.opposite(y, x))
+-      var b = constraint[3*i+j] = triangulation.isConstraint(x, y)
+-      if(a < 0) {
+-        if(b) {
+-          next.push(i)
+-        } else {
+-          active.push(i)
+-          flags[i] = 1
+-        }
+-        if(infinity) {
+-          boundary.push([y, x, -1])
+-        }
+-      }
++
++  var i
++  if (length === undefined) {
++    length = 0
++    for (i = 0; i < list.length; ++i) {
++      length += list[i].length
+     }
+   }
+-  return index
+-}
+ 
+-function filterCells(cells, flags, target) {
+-  var ptr = 0
+-  for(var i=0; i<cells.length; ++i) {
+-    if(flags[i] === target) {
+-      cells[ptr++] = cells[i]
++  var buffer = Buffer.allocUnsafe(length)
++  var pos = 0
++  for (i = 0; i < list.length; ++i) {
++    var buf = list[i]
++    if (!Buffer.isBuffer(buf)) {
++      throw new TypeError('"list" argument must be an Array of Buffers')
+     }
++    buf.copy(buffer, pos)
++    pos += buf.length
+   }
+-  cells.length = ptr
+-  return cells
++  return buffer
+ }
+ 
+-function classifyFaces(triangulation, target, infinity) {
+-  var index = indexCells(triangulation, infinity)
++function byteLength (string, encoding) {
++  if (Buffer.isBuffer(string)) {
++    return string.length
++  }
++  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
++      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
++    return string.byteLength
++  }
++  if (typeof string !== 'string') {
++    string = '' + string
++  }
+ 
+-  if(target === 0) {
+-    if(infinity) {
+-      return index.cells.concat(index.boundary)
+-    } else {
+-      return index.cells
++  var len = string.length
++  if (len === 0) return 0
++
++  // Use a for loop to avoid recursion
++  var loweredCase = false
++  for (;;) {
++    switch (encoding) {
++      case 'ascii':
++      case 'latin1':
++      case 'binary':
++        return len
++      case 'utf8':
++      case 'utf-8':
++      case undefined:
++        return utf8ToBytes(string).length
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return len * 2
++      case 'hex':
++        return len >>> 1
++      case 'base64':
++        return base64ToBytes(string).length
++      default:
++        if (loweredCase) return utf8ToBytes(string).length // assume utf8
++        encoding = ('' + encoding).toLowerCase()
++        loweredCase = true
+     }
+   }
++}
++Buffer.byteLength = byteLength
+ 
+-  var side = 1
+-  var active = index.active
+-  var next = index.next
+-  var flags = index.flags
+-  var cells = index.cells
+-  var constraint = index.constraint
+-  var neighbor = index.neighbor
++function slowToString (encoding, start, end) {
++  var loweredCase = false
+ 
+-  while(active.length > 0 || next.length > 0) {
+-    while(active.length > 0) {
+-      var t = active.pop()
+-      if(flags[t] === -side) {
+-        continue
+-      }
+-      flags[t] = side
+-      var c = cells[t]
+-      for(var j=0; j<3; ++j) {
+-        var f = neighbor[3*t+j]
+-        if(f >= 0 && flags[f] === 0) {
+-          if(constraint[3*t+j]) {
+-            next.push(f)
+-          } else {
+-            active.push(f)
+-            flags[f] = side
+-          }
+-        }
+-      }
+-    }
++  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
++  // property of a typed array.
+ 
+-    //Swap arrays and loop
+-    var tmp = next
+-    next = active
+-    active = tmp
+-    next.length = 0
+-    side = -side
++  // This behaves neither like String nor Uint8Array in that we set start/end
++  // to their upper/lower bounds if the value passed is out of range.
++  // undefined is handled specially as per ECMA-262 6th Edition,
++  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
++  if (start === undefined || start < 0) {
++    start = 0
++  }
++  // Return early if start > this.length. Done here to prevent potential uint32
++  // coercion fail below.
++  if (start > this.length) {
++    return ''
+   }
+ 
+-  var result = filterCells(cells, flags, target)
+-  if(infinity) {
+-    return result.concat(index.boundary)
++  if (end === undefined || end > this.length) {
++    end = this.length
+   }
+-  return result
+-}
+ 
+-},{"binary-search-bounds":68}],66:[function(require,module,exports){
+-'use strict'
++  if (end <= 0) {
++    return ''
++  }
+ 
+-var bsearch = require('binary-search-bounds')
+-var orient = require('robust-orientation')[3]
++  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
++  end >>>= 0
++  start >>>= 0
+ 
+-var EVENT_POINT = 0
+-var EVENT_END   = 1
+-var EVENT_START = 2
++  if (end <= start) {
++    return ''
++  }
+ 
+-module.exports = monotoneTriangulate
++  if (!encoding) encoding = 'utf8'
+ 
+-//A partial convex hull fragment, made of two unimonotone polygons
+-function PartialHull(a, b, idx, lowerIds, upperIds) {
+-  this.a = a
+-  this.b = b
+-  this.idx = idx
+-  this.lowerIds = lowerIds
+-  this.upperIds = upperIds
+-}
++  while (true) {
++    switch (encoding) {
++      case 'hex':
++        return hexSlice(this, start, end)
+ 
+-//An event in the sweep line procedure
+-function Event(a, b, type, idx) {
+-  this.a    = a
+-  this.b    = b
+-  this.type = type
+-  this.idx  = idx
+-}
++      case 'utf8':
++      case 'utf-8':
++        return utf8Slice(this, start, end)
+ 
+-//This is used to compare events for the sweep line procedure
+-// Points are:
+-//  1. sorted lexicographically
+-//  2. sorted by type  (point < end < start)
+-//  3. segments sorted by winding order
+-//  4. sorted by index
+-function compareEvent(a, b) {
+-  var d =
+-    (a.a[0] - b.a[0]) ||
+-    (a.a[1] - b.a[1]) ||
+-    (a.type - b.type)
+-  if(d) { return d }
+-  if(a.type !== EVENT_POINT) {
+-    d = orient(a.a, a.b, b.b)
+-    if(d) { return d }
+-  }
+-  return a.idx - b.idx
+-}
++      case 'ascii':
++        return asciiSlice(this, start, end)
+ 
+-function testPoint(hull, p) {
+-  return orient(hull.a, hull.b, p)
+-}
++      case 'latin1':
++      case 'binary':
++        return latin1Slice(this, start, end)
+ 
+-function addPoint(cells, hulls, points, p, idx) {
+-  var lo = bsearch.lt(hulls, p, testPoint)
+-  var hi = bsearch.gt(hulls, p, testPoint)
+-  for(var i=lo; i<hi; ++i) {
+-    var hull = hulls[i]
++      case 'base64':
++        return base64Slice(this, start, end)
+ 
+-    //Insert p into lower hull
+-    var lowerIds = hull.lowerIds
+-    var m = lowerIds.length
+-    while(m > 1 && orient(
+-        points[lowerIds[m-2]],
+-        points[lowerIds[m-1]],
+-        p) > 0) {
+-      cells.push(
+-        [lowerIds[m-1],
+-         lowerIds[m-2],
+-         idx])
+-      m -= 1
+-    }
+-    lowerIds.length = m
+-    lowerIds.push(idx)
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return utf16leSlice(this, start, end)
+ 
+-    //Insert p into upper hull
+-    var upperIds = hull.upperIds
+-    var m = upperIds.length
+-    while(m > 1 && orient(
+-        points[upperIds[m-2]],
+-        points[upperIds[m-1]],
+-        p) < 0) {
+-      cells.push(
+-        [upperIds[m-2],
+-         upperIds[m-1],
+-         idx])
+-      m -= 1
++      default:
++        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
++        encoding = (encoding + '').toLowerCase()
++        loweredCase = true
+     }
+-    upperIds.length = m
+-    upperIds.push(idx)
+   }
+ }
+ 
+-function findSplit(hull, edge) {
+-  var d
+-  if(hull.a[0] < edge.a[0]) {
+-    d = orient(hull.a, hull.b, edge.a)
+-  } else {
+-    d = orient(edge.b, edge.a, hull.a)
++// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
++// Buffer instances.
++Buffer.prototype._isBuffer = true
++
++function swap (b, n, m) {
++  var i = b[n]
++  b[n] = b[m]
++  b[m] = i
++}
++
++Buffer.prototype.swap16 = function swap16 () {
++  var len = this.length
++  if (len % 2 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 16-bits')
+   }
+-  if(d) { return d }
+-  if(edge.b[0] < hull.b[0]) {
+-    d = orient(hull.a, hull.b, edge.b)
+-  } else {
+-    d = orient(edge.b, edge.a, hull.b)
++  for (var i = 0; i < len; i += 2) {
++    swap(this, i, i + 1)
+   }
+-  return d || hull.idx - edge.idx
++  return this
+ }
+ 
+-function splitHulls(hulls, points, event) {
+-  var splitIdx = bsearch.le(hulls, event, findSplit)
+-  var hull = hulls[splitIdx]
+-  var upperIds = hull.upperIds
+-  var x = upperIds[upperIds.length-1]
+-  hull.upperIds = [x]
+-  hulls.splice(splitIdx+1, 0,
+-    new PartialHull(event.a, event.b, event.idx, [x], upperIds))
++Buffer.prototype.swap32 = function swap32 () {
++  var len = this.length
++  if (len % 4 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 32-bits')
++  }
++  for (var i = 0; i < len; i += 4) {
++    swap(this, i, i + 3)
++    swap(this, i + 1, i + 2)
++  }
++  return this
+ }
+ 
++Buffer.prototype.swap64 = function swap64 () {
++  var len = this.length
++  if (len % 8 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 64-bits')
++  }
++  for (var i = 0; i < len; i += 8) {
++    swap(this, i, i + 7)
++    swap(this, i + 1, i + 6)
++    swap(this, i + 2, i + 5)
++    swap(this, i + 3, i + 4)
++  }
++  return this
++}
+ 
+-function mergeHulls(hulls, points, event) {
+-  //Swap pointers for merge search
+-  var tmp = event.a
+-  event.a = event.b
+-  event.b = tmp
+-  var mergeIdx = bsearch.eq(hulls, event, findSplit)
+-  var upper = hulls[mergeIdx]
+-  var lower = hulls[mergeIdx-1]
+-  lower.upperIds = upper.upperIds
+-  hulls.splice(mergeIdx, 1)
++Buffer.prototype.toString = function toString () {
++  var length = this.length | 0
++  if (length === 0) return ''
++  if (arguments.length === 0) return utf8Slice(this, 0, length)
++  return slowToString.apply(this, arguments)
+ }
+ 
++Buffer.prototype.equals = function equals (b) {
++  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
++  if (this === b) return true
++  return Buffer.compare(this, b) === 0
++}
+ 
+-function monotoneTriangulate(points, edges) {
++Buffer.prototype.inspect = function inspect () {
++  var str = ''
++  var max = exports.INSPECT_MAX_BYTES
++  if (this.length > 0) {
++    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
++    if (this.length > max) str += ' ... '
++  }
++  return '<Buffer ' + str + '>'
++}
+ 
+-  var numPoints = points.length
+-  var numEdges = edges.length
++Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
++  if (!Buffer.isBuffer(target)) {
++    throw new TypeError('Argument must be a Buffer')
++  }
+ 
+-  var events = []
++  if (start === undefined) {
++    start = 0
++  }
++  if (end === undefined) {
++    end = target ? target.length : 0
++  }
++  if (thisStart === undefined) {
++    thisStart = 0
++  }
++  if (thisEnd === undefined) {
++    thisEnd = this.length
++  }
+ 
+-  //Create point events
+-  for(var i=0; i<numPoints; ++i) {
+-    events.push(new Event(
+-      points[i],
+-      null,
+-      EVENT_POINT,
+-      i))
++  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
++    throw new RangeError('out of range index')
+   }
+ 
+-  //Create edge events
+-  for(var i=0; i<numEdges; ++i) {
+-    var e = edges[i]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    if(a[0] < b[0]) {
+-      events.push(
+-        new Event(a, b, EVENT_START, i),
+-        new Event(b, a, EVENT_END, i))
+-    } else if(a[0] > b[0]) {
+-      events.push(
+-        new Event(b, a, EVENT_START, i),
+-        new Event(a, b, EVENT_END, i))
+-    }
++  if (thisStart >= thisEnd && start >= end) {
++    return 0
++  }
++  if (thisStart >= thisEnd) {
++    return -1
++  }
++  if (start >= end) {
++    return 1
+   }
+ 
+-  //Sort events
+-  events.sort(compareEvent)
++  start >>>= 0
++  end >>>= 0
++  thisStart >>>= 0
++  thisEnd >>>= 0
+ 
+-  //Initialize hull
+-  var minX = events[0].a[0] - (1 + Math.abs(events[0].a[0])) * Math.pow(2, -52)
+-  var hull = [ new PartialHull([minX, 1], [minX, 0], -1, [], [], [], []) ]
++  if (this === target) return 0
+ 
+-  //Process events in order
+-  var cells = []
+-  for(var i=0, numEvents=events.length; i<numEvents; ++i) {
+-    var event = events[i]
+-    var type = event.type
+-    if(type === EVENT_POINT) {
+-      addPoint(cells, hull, points, event.a, event.idx)
+-    } else if(type === EVENT_START) {
+-      splitHulls(hull, points, event)
+-    } else {
+-      mergeHulls(hull, points, event)
++  var x = thisEnd - thisStart
++  var y = end - start
++  var len = Math.min(x, y)
++
++  var thisCopy = this.slice(thisStart, thisEnd)
++  var targetCopy = target.slice(start, end)
++
++  for (var i = 0; i < len; ++i) {
++    if (thisCopy[i] !== targetCopy[i]) {
++      x = thisCopy[i]
++      y = targetCopy[i]
++      break
+     }
+   }
+ 
+-  //Return triangulation
+-  return cells
++  if (x < y) return -1
++  if (y < x) return 1
++  return 0
+ }
+ 
+-},{"binary-search-bounds":68,"robust-orientation":439}],67:[function(require,module,exports){
+-'use strict'
+-
+-var bsearch = require('binary-search-bounds')
++// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
++// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
++//
++// Arguments:
++// - buffer - a Buffer to search
++// - val - a string, Buffer, or number
++// - byteOffset - an index into `buffer`; will be clamped to an int32
++// - encoding - an optional encoding, relevant is val is a string
++// - dir - true for indexOf, false for lastIndexOf
++function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
++  // Empty buffer means no match
++  if (buffer.length === 0) return -1
++
++  // Normalize byteOffset
++  if (typeof byteOffset === 'string') {
++    encoding = byteOffset
++    byteOffset = 0
++  } else if (byteOffset > 0x7fffffff) {
++    byteOffset = 0x7fffffff
++  } else if (byteOffset < -0x80000000) {
++    byteOffset = -0x80000000
++  }
++  byteOffset = +byteOffset  // Coerce to Number.
++  if (isNaN(byteOffset)) {
++    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
++    byteOffset = dir ? 0 : (buffer.length - 1)
++  }
++
++  // Normalize byteOffset: negative offsets start from the end of the buffer
++  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
++  if (byteOffset >= buffer.length) {
++    if (dir) return -1
++    else byteOffset = buffer.length - 1
++  } else if (byteOffset < 0) {
++    if (dir) byteOffset = 0
++    else return -1
++  }
++
++  // Normalize val
++  if (typeof val === 'string') {
++    val = Buffer.from(val, encoding)
++  }
+ 
+-module.exports = createTriangulation
++  // Finally, search either indexOf (if dir is true) or lastIndexOf
++  if (Buffer.isBuffer(val)) {
++    // Special case: looking for empty string/buffer always fails
++    if (val.length === 0) {
++      return -1
++    }
++    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
++  } else if (typeof val === 'number') {
++    val = val & 0xFF // Search for a byte value [0-255]
++    if (Buffer.TYPED_ARRAY_SUPPORT &&
++        typeof Uint8Array.prototype.indexOf === 'function') {
++      if (dir) {
++        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
++      } else {
++        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
++      }
++    }
++    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
++  }
+ 
+-function Triangulation(stars, edges) {
+-  this.stars = stars
+-  this.edges = edges
++  throw new TypeError('val must be string, number or Buffer')
+ }
+ 
+-var proto = Triangulation.prototype
++function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
++  var indexSize = 1
++  var arrLength = arr.length
++  var valLength = val.length
+ 
+-function removePair(list, j, k) {
+-  for(var i=1, n=list.length; i<n; i+=2) {
+-    if(list[i-1] === j && list[i] === k) {
+-      list[i-1] = list[n-2]
+-      list[i] = list[n-1]
+-      list.length = n - 2
+-      return
++  if (encoding !== undefined) {
++    encoding = String(encoding).toLowerCase()
++    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
++        encoding === 'utf16le' || encoding === 'utf-16le') {
++      if (arr.length < 2 || val.length < 2) {
++        return -1
++      }
++      indexSize = 2
++      arrLength /= 2
++      valLength /= 2
++      byteOffset /= 2
+     }
+   }
+-}
+ 
+-proto.isConstraint = (function() {
+-  var e = [0,0]
+-  function compareLex(a, b) {
+-    return a[0] - b[0] || a[1] - b[1]
++  function read (buf, i) {
++    if (indexSize === 1) {
++      return buf[i]
++    } else {
++      return buf.readUInt16BE(i * indexSize)
++    }
+   }
+-  return function(i, j) {
+-    e[0] = Math.min(i,j)
+-    e[1] = Math.max(i,j)
+-    return bsearch.eq(this.edges, e, compareLex) >= 0
++
++  var i
++  if (dir) {
++    var foundIndex = -1
++    for (i = byteOffset; i < arrLength; i++) {
++      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
++        if (foundIndex === -1) foundIndex = i
++        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
++      } else {
++        if (foundIndex !== -1) i -= i - foundIndex
++        foundIndex = -1
++      }
++    }
++  } else {
++    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
++    for (i = byteOffset; i >= 0; i--) {
++      var found = true
++      for (var j = 0; j < valLength; j++) {
++        if (read(arr, i + j) !== read(val, j)) {
++          found = false
++          break
++        }
++      }
++      if (found) return i
++    }
+   }
+-})()
+ 
+-proto.removeTriangle = function(i, j, k) {
+-  var stars = this.stars
+-  removePair(stars[i], j, k)
+-  removePair(stars[j], k, i)
+-  removePair(stars[k], i, j)
++  return -1
+ }
+ 
+-proto.addTriangle = function(i, j, k) {
+-  var stars = this.stars
+-  stars[i].push(j, k)
+-  stars[j].push(k, i)
+-  stars[k].push(i, j)
++Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
++  return this.indexOf(val, byteOffset, encoding) !== -1
+ }
+ 
+-proto.opposite = function(j, i) {
+-  var list = this.stars[i]
+-  for(var k=1, n=list.length; k<n; k+=2) {
+-    if(list[k] === j) {
+-      return list[k-1]
+-    }
+-  }
+-  return -1
++Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
++  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
+ }
+ 
+-proto.flip = function(i, j) {
+-  var a = this.opposite(i, j)
+-  var b = this.opposite(j, i)
+-  this.removeTriangle(i, j, a)
+-  this.removeTriangle(j, i, b)
+-  this.addTriangle(i, b, a)
+-  this.addTriangle(j, a, b)
++Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
++  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
+ }
+ 
+-proto.edges = function() {
+-  var stars = this.stars
+-  var result = []
+-  for(var i=0, n=stars.length; i<n; ++i) {
+-    var list = stars[i]
+-    for(var j=0, m=list.length; j<m; j+=2) {
+-      result.push([list[j], list[j+1]])
++function hexWrite (buf, string, offset, length) {
++  offset = Number(offset) || 0
++  var remaining = buf.length - offset
++  if (!length) {
++    length = remaining
++  } else {
++    length = Number(length)
++    if (length > remaining) {
++      length = remaining
+     }
+   }
+-  return result
+-}
+ 
+-proto.cells = function() {
+-  var stars = this.stars
+-  var result = []
+-  for(var i=0, n=stars.length; i<n; ++i) {
+-    var list = stars[i]
+-    for(var j=0, m=list.length; j<m; j+=2) {
+-      var s = list[j]
+-      var t = list[j+1]
+-      if(i < Math.min(s, t)) {
+-        result.push([i, s, t])
+-      }
+-    }
++  // must be an even number of digits
++  var strLen = string.length
++  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
++
++  if (length > strLen / 2) {
++    length = strLen / 2
+   }
+-  return result
++  for (var i = 0; i < length; ++i) {
++    var parsed = parseInt(string.substr(i * 2, 2), 16)
++    if (isNaN(parsed)) return i
++    buf[offset + i] = parsed
++  }
++  return i
+ }
+ 
+-function createTriangulation(numVerts, edges) {
+-  var stars = new Array(numVerts)
+-  for(var i=0; i<numVerts; ++i) {
+-    stars[i] = []
+-  }
+-  return new Triangulation(stars, edges)
++function utf8Write (buf, string, offset, length) {
++  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+ }
+ 
+-},{"binary-search-bounds":68}],68:[function(require,module,exports){
+-"use strict"
++function asciiWrite (buf, string, offset, length) {
++  return blitBuffer(asciiToBytes(string), buf, offset, length)
++}
+ 
+-function compileSearch(funcName, predicate, reversed, extraArgs, earlyOut) {
+-  var code = [
+-    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
+-earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
+-";while(l<=h){\
+-var m=(l+h)>>>1,x=a[m]"]
+-  if(earlyOut) {
+-    if(predicate.indexOf("c") < 0) {
+-      code.push(";if(x===y){return m}else if(x<=y){")
++function latin1Write (buf, string, offset, length) {
++  return asciiWrite(buf, string, offset, length)
++}
++
++function base64Write (buf, string, offset, length) {
++  return blitBuffer(base64ToBytes(string), buf, offset, length)
++}
++
++function ucs2Write (buf, string, offset, length) {
++  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
++}
++
++Buffer.prototype.write = function write (string, offset, length, encoding) {
++  // Buffer#write(string)
++  if (offset === undefined) {
++    encoding = 'utf8'
++    length = this.length
++    offset = 0
++  // Buffer#write(string, encoding)
++  } else if (length === undefined && typeof offset === 'string') {
++    encoding = offset
++    length = this.length
++    offset = 0
++  // Buffer#write(string, offset[, length][, encoding])
++  } else if (isFinite(offset)) {
++    offset = offset | 0
++    if (isFinite(length)) {
++      length = length | 0
++      if (encoding === undefined) encoding = 'utf8'
+     } else {
+-      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
++      encoding = length
++      length = undefined
+     }
++  // legacy write(string, encoding, offset, length) - remove in v0.13
+   } else {
+-    code.push(";if(", predicate, "){i=m;")
+-  }
+-  if(reversed) {
+-    code.push("l=m+1}else{h=m-1}")
+-  } else {
+-    code.push("h=m-1}else{l=m+1}")
++    throw new Error(
++      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
++    )
+   }
+-  code.push("}")
+-  if(earlyOut) {
+-    code.push("return -1};")
+-  } else {
+-    code.push("return i};")
++
++  var remaining = this.length - offset
++  if (length === undefined || length > remaining) length = remaining
++
++  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
++    throw new RangeError('Attempt to write outside buffer bounds')
+   }
+-  return code.join("")
+-}
+ 
+-function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
+-  var result = new Function([
+-  compileSearch("A", "x" + predicate + "y", reversed, ["y"], earlyOut),
+-  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], earlyOut),
+-"function dispatchBsearch", suffix, "(a,y,c,l,h){\
+-if(typeof(c)==='function'){\
+-return P(a,(l===void 0)?0:l|0,(h===void 0)?a.length-1:h|0,y,c)\
+-}else{\
+-return A(a,(c===void 0)?0:c|0,(l===void 0)?a.length-1:l|0,y)\
+-}}\
+-return dispatchBsearch", suffix].join(""))
+-  return result()
+-}
++  if (!encoding) encoding = 'utf8'
+ 
+-module.exports = {
+-  ge: compileBoundsSearch(">=", false, "GE"),
+-  gt: compileBoundsSearch(">", false, "GT"),
+-  lt: compileBoundsSearch("<", true, "LT"),
+-  le: compileBoundsSearch("<=", true, "LE"),
+-  eq: compileBoundsSearch("-", true, "EQ", true)
+-}
++  var loweredCase = false
++  for (;;) {
++    switch (encoding) {
++      case 'hex':
++        return hexWrite(this, string, offset, length)
+ 
+-},{}],69:[function(require,module,exports){
+-"use strict"
++      case 'utf8':
++      case 'utf-8':
++        return utf8Write(this, string, offset, length)
+ 
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
+-var robustDiff = require("robust-subtract")
+-var robustScale = require("robust-scale")
++      case 'ascii':
++        return asciiWrite(this, string, offset, length)
+ 
+-var NUM_EXPAND = 6
++      case 'latin1':
++      case 'binary':
++        return latin1Write(this, string, offset, length)
+ 
+-function cofactor(m, c) {
+-  var result = new Array(m.length-1)
+-  for(var i=1; i<m.length; ++i) {
+-    var r = result[i-1] = new Array(m.length-1)
+-    for(var j=0,k=0; j<m.length; ++j) {
+-      if(j === c) {
+-        continue
+-      }
+-      r[k++] = m[i][j]
++      case 'base64':
++        // Warning: maxLength not taken into account in base64Write
++        return base64Write(this, string, offset, length)
++
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return ucs2Write(this, string, offset, length)
++
++      default:
++        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
++        encoding = ('' + encoding).toLowerCase()
++        loweredCase = true
+     }
+   }
+-  return result
+ }
+ 
+-function matrix(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = new Array(n)
+-    for(var j=0; j<n; ++j) {
+-      result[i][j] = ["m", j, "[", (n-i-2), "]"].join("")
+-    }
++Buffer.prototype.toJSON = function toJSON () {
++  return {
++    type: 'Buffer',
++    data: Array.prototype.slice.call(this._arr || this, 0)
+   }
+-  return result
+ }
+ 
+-function generateSum(expr) {
+-  if(expr.length === 1) {
+-    return expr[0]
+-  } else if(expr.length === 2) {
+-    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++function base64Slice (buf, start, end) {
++  if (start === 0 && end === buf.length) {
++    return base64.fromByteArray(buf)
+   } else {
+-    var m = expr.length>>1
+-    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++    return base64.fromByteArray(buf.slice(start, end))
+   }
+ }
+ 
+-function makeProduct(a, b) {
+-  if(a.charAt(0) === "m") {
+-    if(b.charAt(0) === "w") {
+-      var toks = a.split("[")
+-      return ["w", b.substr(1), "m", toks[0].substr(1)].join("")
+-    } else {
+-      return ["prod(", a, ",", b, ")"].join("")
++function utf8Slice (buf, start, end) {
++  end = Math.min(buf.length, end)
++  var res = []
++
++  var i = start
++  while (i < end) {
++    var firstByte = buf[i]
++    var codePoint = null
++    var bytesPerSequence = (firstByte > 0xEF) ? 4
++      : (firstByte > 0xDF) ? 3
++      : (firstByte > 0xBF) ? 2
++      : 1
++
++    if (i + bytesPerSequence <= end) {
++      var secondByte, thirdByte, fourthByte, tempCodePoint
++
++      switch (bytesPerSequence) {
++        case 1:
++          if (firstByte < 0x80) {
++            codePoint = firstByte
++          }
++          break
++        case 2:
++          secondByte = buf[i + 1]
++          if ((secondByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
++            if (tempCodePoint > 0x7F) {
++              codePoint = tempCodePoint
++            }
++          }
++          break
++        case 3:
++          secondByte = buf[i + 1]
++          thirdByte = buf[i + 2]
++          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
++            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
++              codePoint = tempCodePoint
++            }
++          }
++          break
++        case 4:
++          secondByte = buf[i + 1]
++          thirdByte = buf[i + 2]
++          fourthByte = buf[i + 3]
++          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
++            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
++              codePoint = tempCodePoint
++            }
++          }
++      }
+     }
+-  } else {
+-    return makeProduct(b, a)
++
++    if (codePoint === null) {
++      // we did not generate a valid codePoint so insert a
++      // replacement char (U+FFFD) and advance only 1 byte
++      codePoint = 0xFFFD
++      bytesPerSequence = 1
++    } else if (codePoint > 0xFFFF) {
++      // encode to utf16 (surrogate pair dance)
++      codePoint -= 0x10000
++      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
++      codePoint = 0xDC00 | codePoint & 0x3FF
++    }
++
++    res.push(codePoint)
++    i += bytesPerSequence
+   }
++
++  return decodeCodePointsArray(res)
+ }
+ 
+-function sign(s) {
+-  if(s & 1 !== 0) {
+-    return "-"
++// Based on http://stackoverflow.com/a/22747272/680742, the browser with
++// the lowest limit is Chrome, with 0x10000 args.
++// We go 1 magnitude less, for safety
++var MAX_ARGUMENTS_LENGTH = 0x1000
++
++function decodeCodePointsArray (codePoints) {
++  var len = codePoints.length
++  if (len <= MAX_ARGUMENTS_LENGTH) {
++    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+   }
+-  return ""
+-}
+ 
+-function determinant(m) {
+-  if(m.length === 2) {
+-    return [["diff(", makeProduct(m[0][0], m[1][1]), ",", makeProduct(m[1][0], m[0][1]), ")"].join("")]
+-  } else {
+-    var expr = []
+-    for(var i=0; i<m.length; ++i) {
+-      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
+-    }
+-    return expr
++  // Decode in chunks to avoid "call stack size exceeded".
++  var res = ''
++  var i = 0
++  while (i < len) {
++    res += String.fromCharCode.apply(
++      String,
++      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
++    )
+   }
++  return res
+ }
+ 
+-function makeSquare(d, n) {
+-  var terms = []
+-  for(var i=0; i<n-2; ++i) {
+-    terms.push(["prod(m", d, "[", i, "],m", d, "[", i, "])"].join(""))
++function asciiSlice (buf, start, end) {
++  var ret = ''
++  end = Math.min(buf.length, end)
++
++  for (var i = start; i < end; ++i) {
++    ret += String.fromCharCode(buf[i] & 0x7F)
+   }
+-  return generateSum(terms)
++  return ret
+ }
+ 
+-function orientation(n) {
+-  var pos = []
+-  var neg = []
+-  var m = matrix(n)
+-  for(var i=0; i<n; ++i) {
+-    m[0][i] = "1"
+-    m[n-1][i] = "w"+i
+-  } 
+-  for(var i=0; i<n; ++i) {
+-    if((i&1)===0) {
+-      pos.push.apply(pos,determinant(cofactor(m, i)))
+-    } else {
+-      neg.push.apply(neg,determinant(cofactor(m, i)))
+-    }
+-  }
+-  var posExpr = generateSum(pos)
+-  var negExpr = generateSum(neg)
+-  var funcName = "exactInSphere" + n
+-  var funcArgs = []
+-  for(var i=0; i<n; ++i) {
+-    funcArgs.push("m" + i)
+-  }
+-  var code = ["function ", funcName, "(", funcArgs.join(), "){"]
+-  for(var i=0; i<n; ++i) {
+-    code.push("var w",i,"=",makeSquare(i,n),";")
+-    for(var j=0; j<n; ++j) {
+-      if(j !== i) {
+-        code.push("var w",i,"m",j,"=scale(w",i,",m",j,"[0]);")
+-      }
+-    }
++function latin1Slice (buf, start, end) {
++  var ret = ''
++  end = Math.min(buf.length, end)
++
++  for (var i = start; i < end; ++i) {
++    ret += String.fromCharCode(buf[i])
+   }
+-  code.push("var p=", posExpr, ",n=", negExpr, ",d=diff(p,n);return d[d.length-1];}return ", funcName)
+-  var proc = new Function("sum", "diff", "prod", "scale", code.join(""))
+-  return proc(robustSum, robustDiff, twoProduct, robustScale)
++  return ret
+ }
+ 
+-function inSphere0() { return 0 }
+-function inSphere1() { return 0 }
+-function inSphere2() { return 0 }
++function hexSlice (buf, start, end) {
++  var len = buf.length
+ 
+-var CACHED = [
+-  inSphere0,
+-  inSphere1,
+-  inSphere2
+-]
++  if (!start || start < 0) start = 0
++  if (!end || end < 0 || end > len) end = len
+ 
+-function slowInSphere(args) {
+-  var proc = CACHED[args.length]
+-  if(!proc) {
+-    proc = CACHED[args.length] = orientation(args.length)
++  var out = ''
++  for (var i = start; i < end; ++i) {
++    out += toHex(buf[i])
+   }
+-  return proc.apply(undefined, args)
++  return out
+ }
+ 
+-function generateInSphereTest() {
+-  while(CACHED.length <= NUM_EXPAND) {
+-    CACHED.push(orientation(CACHED.length))
++function utf16leSlice (buf, start, end) {
++  var bytes = buf.slice(start, end)
++  var res = ''
++  for (var i = 0; i < bytes.length; i += 2) {
++    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
+   }
+-  var args = []
+-  var procArgs = ["slow"]
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    args.push("a" + i)
+-    procArgs.push("o" + i)
++  return res
++}
++
++Buffer.prototype.slice = function slice (start, end) {
++  var len = this.length
++  start = ~~start
++  end = end === undefined ? len : ~~end
++
++  if (start < 0) {
++    start += len
++    if (start < 0) start = 0
++  } else if (start > len) {
++    start = len
+   }
+-  var code = [
+-    "function testInSphere(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
+-  ]
+-  for(var i=2; i<=NUM_EXPAND; ++i) {
+-    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
++
++  if (end < 0) {
++    end += len
++    if (end < 0) end = 0
++  } else if (end > len) {
++    end = len
+   }
+-  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return testInSphere")
+-  procArgs.push(code.join(""))
+ 
+-  var proc = Function.apply(undefined, procArgs)
++  if (end < start) end = start
+ 
+-  module.exports = proc.apply(undefined, [slowInSphere].concat(CACHED))
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    module.exports[i] = CACHED[i]
++  var newBuf
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    newBuf = this.subarray(start, end)
++    newBuf.__proto__ = Buffer.prototype
++  } else {
++    var sliceLen = end - start
++    newBuf = new Buffer(sliceLen, undefined)
++    for (var i = 0; i < sliceLen; ++i) {
++      newBuf[i] = this[i + start]
++    }
+   }
+-}
+-
+-generateInSphereTest()
+-},{"robust-scale":440,"robust-subtract":441,"robust-sum":442,"two-product":456}],70:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = cleanPSLG
++  return newBuf
++}
+ 
+-var UnionFind = require('union-find')
+-var boxIntersect = require('box-intersect')
+-var compareCell = require('compare-cell')
+-var segseg = require('robust-segment-intersect')
+-var rat = require('big-rat')
+-var ratCmp = require('big-rat/cmp')
+-var ratToFloat = require('big-rat/to-float')
+-var ratVec = require('rat-vec')
+-var nextafter = require('nextafter')
++/*
++ * Need to make sure that buffer isn't trying to write out of bounds.
++ */
++function checkOffset (offset, ext, length) {
++  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
++  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
++}
+ 
+-var solveIntersection = require('./lib/rat-seg-intersect')
++Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
+ 
+-//Bounds on a rational number when rounded to a float
+-function boundRat(r) {
+-  var f = ratToFloat(r)
+-  var cmp = ratCmp(rat(f), r)
+-  if(cmp < 0) {
+-    return [f, nextafter(f, Infinity)]
+-  } else if(cmp > 0) {
+-    return [nextafter(f, -Infinity), f]
+-  } else {
+-    return [f, f]
++  var val = this[offset]
++  var mul = 1
++  var i = 0
++  while (++i < byteLength && (mul *= 0x100)) {
++    val += this[offset + i] * mul
+   }
++
++  return val
+ }
+ 
+-//Convert a list of edges in a pslg to bounding boxes
+-function boundEdges(points, edges) {
+-  var bounds = new Array(edges.length)
+-  for(var i=0; i<edges.length; ++i) {
+-    var e = edges[i]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    bounds[i] = [
+-      Math.min(a[0], b[0]),
+-      Math.min(a[1], b[1]),
+-      Math.max(a[0], b[0]),
+-      Math.max(a[1], b[1]) ]
++Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    checkOffset(offset, byteLength, this.length)
+   }
+-  return bounds
+-}
+ 
+-//Convert a list of points into bounding boxes by duplicating coords
+-function boundPoints(points) {
+-  var bounds = new Array(points.length)
+-  for(var i=0; i<points.length; ++i) {
+-    var p = points[i]
+-    bounds[i] = [ p[0], p[1], p[0], p[1] ]
++  var val = this[offset + --byteLength]
++  var mul = 1
++  while (byteLength > 0 && (mul *= 0x100)) {
++    val += this[offset + --byteLength] * mul
+   }
+-  return bounds
++
++  return val
+ }
+ 
+-//Find all pairs of crossing edges in a pslg (given edge bounds)
+-function getCrossings(points, edges, edgeBounds) {
+-  var result = []
+-  boxIntersect(edgeBounds, function(i, j) {
+-    var e = edges[i]
+-    var f = edges[j]
+-    if(e[0] === f[0] || e[0] === f[1] ||
+-       e[1] === f[0] || e[1] === f[1]) {
+-         return
+-    }
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    var c = points[f[0]]
+-    var d = points[f[1]]
+-    if(segseg(a, b, c, d)) {
+-      result.push([i, j])
+-    }
+-  })
+-  return result
++Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 1, this.length)
++  return this[offset]
+ }
+ 
+-//Find all pairs of crossing vertices in a pslg (given edge/vert bounds)
+-function getTJunctions(points, edges, edgeBounds, vertBounds) {
+-  var result = []
+-  boxIntersect(edgeBounds, vertBounds, function(i, v) {
+-    var e = edges[i]
+-    if(e[0] === v || e[1] === v) {
+-      return
+-    }
+-    var p = points[v]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    if(segseg(a, b, p, p)) {
+-      result.push([i, v])
+-    }
+-  })
+-  return result
++Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  return this[offset] | (this[offset + 1] << 8)
+ }
+ 
++Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  return (this[offset] << 8) | this[offset + 1]
++}
+ 
+-//Cut edges along crossings/tjunctions
+-function cutEdges(floatPoints, edges, crossings, junctions, useColor) {
++Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-  //Convert crossings into tjunctions by constructing rational points
+-  var ratPoints = []
+-  for(var i=0; i<crossings.length; ++i) {
+-    var crossing = crossings[i]
+-    var e = crossing[0]
+-    var f = crossing[1]
+-    var ee = edges[e]
+-    var ef = edges[f]
+-    var x = solveIntersection(
+-      ratVec(floatPoints[ee[0]]),
+-      ratVec(floatPoints[ee[1]]),
+-      ratVec(floatPoints[ef[0]]),
+-      ratVec(floatPoints[ef[1]]))
+-    if(!x) {
+-      //Segments are parallel, should already be handled by t-junctions
+-      continue
+-    }
+-    var idx = ratPoints.length + floatPoints.length
+-    ratPoints.push(x)
+-    junctions.push([e, idx], [f, idx])
+-  }
++  return ((this[offset]) |
++      (this[offset + 1] << 8) |
++      (this[offset + 2] << 16)) +
++      (this[offset + 3] * 0x1000000)
++}
+ 
+-  //Sort tjunctions
+-  function getPoint(idx) {
+-    if(idx >= floatPoints.length) {
+-      return ratPoints[idx-floatPoints.length]
+-    }
+-    var p = floatPoints[idx]
+-    return [ rat(p[0]), rat(p[1]) ]
+-  }
+-  junctions.sort(function(a, b) {
+-    if(a[0] !== b[0]) {
+-      return a[0] - b[0]
+-    }
+-    var u = getPoint(a[1])
+-    var v = getPoint(b[1])
+-    return ratCmp(u[0], v[0]) || ratCmp(u[1], v[1])
+-  })
++Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-  //Split edges along junctions
+-  for(var i=junctions.length-1; i>=0; --i) {
+-    var junction = junctions[i]
+-    var e = junction[0]
++  return (this[offset] * 0x1000000) +
++    ((this[offset + 1] << 16) |
++    (this[offset + 2] << 8) |
++    this[offset + 3])
++}
+ 
+-    var edge = edges[e]
+-    var s = edge[0]
+-    var t = edge[1]
++Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
+ 
+-    //Check if edge is not lexicographically sorted
+-    var a = floatPoints[s]
+-    var b = floatPoints[t]
+-    if(((a[0] - b[0]) || (a[1] - b[1])) < 0) {
+-      var tmp = s
+-      s = t
+-      t = tmp
+-    }
++  var val = this[offset]
++  var mul = 1
++  var i = 0
++  while (++i < byteLength && (mul *= 0x100)) {
++    val += this[offset + i] * mul
++  }
++  mul *= 0x80
+ 
+-    //Split leading edge
+-    edge[0] = s
+-    var last = edge[1] = junction[1]
++  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+ 
+-    //If we are grouping edges by color, remember to track data
+-    var color
+-    if(useColor) {
+-      color = edge[2]
+-    }
++  return val
++}
+ 
+-    //Split other edges
+-    while(i > 0 && junctions[i-1][0] === e) {
+-      var junction = junctions[--i]
+-      var next = junction[1]
+-      if(useColor) {
+-        edges.push([last, next, color])
+-      } else {
+-        edges.push([last, next])
+-      }
+-      last = next
+-    }
++Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
+ 
+-    //Add final edge
+-    if(useColor) {
+-      edges.push([last, t, color])
+-    } else {
+-      edges.push([last, t])
+-    }
++  var i = byteLength
++  var mul = 1
++  var val = this[offset + --i]
++  while (i > 0 && (mul *= 0x100)) {
++    val += this[offset + --i] * mul
+   }
++  mul *= 0x80
+ 
+-  //Return constructed rational points
+-  return ratPoints
++  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
++
++  return val
+ }
+ 
+-//Merge overlapping points
+-function dedupPoints(floatPoints, ratPoints, floatBounds) {
+-  var numPoints = floatPoints.length + ratPoints.length
+-  var uf        = new UnionFind(numPoints)
++Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 1, this.length)
++  if (!(this[offset] & 0x80)) return (this[offset])
++  return ((0xff - this[offset] + 1) * -1)
++}
+ 
+-  //Compute rational bounds
+-  var bounds = floatBounds
+-  for(var i=0; i<ratPoints.length; ++i) {
+-    var p = ratPoints[i]
+-    var xb = boundRat(p[0])
+-    var yb = boundRat(p[1])
+-    bounds.push([ xb[0], yb[0], xb[1], yb[1] ])
+-    floatPoints.push([ ratToFloat(p[0]), ratToFloat(p[1]) ])
+-  }
++Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  var val = this[offset] | (this[offset + 1] << 8)
++  return (val & 0x8000) ? val | 0xFFFF0000 : val
++}
+ 
+-  //Link all points with over lapping boxes
+-  boxIntersect(bounds, function(i, j) {
+-    uf.link(i, j)
+-  })
++Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  var val = this[offset + 1] | (this[offset] << 8)
++  return (val & 0x8000) ? val | 0xFFFF0000 : val
++}
+ 
+-  //Call find on each point to get a relabeling
+-  var ptr = 0
+-  var noDupes = true
+-  var labels = new Array(numPoints)
+-  for(var i=0; i<numPoints; ++i) {
+-    var j = uf.find(i)
+-    if(j === i) {
+-      //If not a duplicate, then don't bother
+-      labels[i] = ptr
+-      floatPoints[ptr++] = floatPoints[i]
+-    } else {
+-      //Clear no-dupes flag, zero out label
+-      noDupes = false
+-      labels[i] = -1
+-    }
+-  }
+-  floatPoints.length = ptr
++Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-  //If no duplicates, return null to signal termination
+-  if(noDupes) {
+-    return null
+-  }
++  return (this[offset]) |
++    (this[offset + 1] << 8) |
++    (this[offset + 2] << 16) |
++    (this[offset + 3] << 24)
++}
+ 
+-  //Do a second pass to fix up missing labels
+-  for(var i=0; i<numPoints; ++i) {
+-    if(labels[i] < 0) {
+-      labels[i] = labels[uf.find(i)]
+-    }
+-  }
++Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-  //Return resulting union-find data structure
+-  return labels
++  return (this[offset] << 24) |
++    (this[offset + 1] << 16) |
++    (this[offset + 2] << 8) |
++    (this[offset + 3])
+ }
+ 
+-function compareLex2(a,b) { return (a[0]-b[0]) || (a[1]-b[1]) }
+-function compareLex3(a,b) {
+-  var d = (a[0] - b[0]) || (a[1] - b[1])
+-  if(d) {
+-    return d
+-  }
+-  if(a[2] < b[2]) {
+-    return -1
+-  } else if(a[2] > b[2]) {
+-    return 1
+-  }
+-  return 0
++Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
++  return ieee754.read(this, offset, true, 23, 4)
+ }
+ 
+-//Remove duplicate edge labels
+-function dedupEdges(edges, labels, useColor) {
+-  if(edges.length === 0) {
+-    return
+-  }
+-  if(labels) {
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      var a = labels[e[0]]
+-      var b = labels[e[1]]
+-      e[0] = Math.min(a, b)
+-      e[1] = Math.max(a, b)
+-    }
+-  } else {
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      var a = e[0]
+-      var b = e[1]
+-      e[0] = Math.min(a, b)
+-      e[1] = Math.max(a, b)
+-    }
+-  }
+-  if(useColor) {
+-    edges.sort(compareLex3)
+-  } else {
+-    edges.sort(compareLex2)
+-  }
+-  var ptr = 1
+-  for(var i=1; i<edges.length; ++i) {
+-    var prev = edges[i-1]
+-    var next = edges[i]
+-    if(next[0] === prev[0] && next[1] === prev[1] &&
+-      (!useColor || next[2] === prev[2])) {
+-      continue
+-    }
+-    edges[ptr++] = next
+-  }
+-  edges.length = ptr
++Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
++  return ieee754.read(this, offset, false, 23, 4)
+ }
+ 
+-//Repeat until convergence
+-function snapRound(points, edges, useColor) {
++Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 8, this.length)
++  return ieee754.read(this, offset, true, 52, 8)
++}
+ 
+-  // 1. find edge crossings
+-  var edgeBounds = boundEdges(points, edges)
+-  var crossings  = getCrossings(points, edges, edgeBounds)
++Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 8, this.length)
++  return ieee754.read(this, offset, false, 52, 8)
++}
+ 
+-  // 2. find t-junctions
+-  var vertBounds = boundPoints(points)
+-  var tjunctions = getTJunctions(points, edges, edgeBounds, vertBounds)
++function checkInt (buf, value, offset, ext, max, min) {
++  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
++  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
++  if (offset + ext > buf.length) throw new RangeError('Index out of range')
++}
+ 
+-  // 3. cut edges, construct rational points
+-  var ratPoints  = cutEdges(points, edges, crossings, tjunctions, useColor)
++Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    var maxBytes = Math.pow(2, 8 * byteLength) - 1
++    checkInt(this, value, offset, byteLength, maxBytes, 0)
++  }
+ 
+-  // 4. dedupe verts
+-  var labels     = dedupPoints(points, ratPoints, vertBounds)
++  var mul = 1
++  var i = 0
++  this[offset] = value & 0xFF
++  while (++i < byteLength && (mul *= 0x100)) {
++    this[offset + i] = (value / mul) & 0xFF
++  }
+ 
+-  // 6. dedupe edges
+-  dedupEdges(edges, labels, useColor)
++  return offset + byteLength
++}
+ 
+-  // 5. check termination
+-  if(!labels) {
+-    return (crossings.length > 0 || tjunctions.length > 0)
++Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    var maxBytes = Math.pow(2, 8 * byteLength) - 1
++    checkInt(this, value, offset, byteLength, maxBytes, 0)
+   }
+ 
+-  // More iterations necessary
+-  return true
++  var i = byteLength - 1
++  var mul = 1
++  this[offset + i] = value & 0xFF
++  while (--i >= 0 && (mul *= 0x100)) {
++    this[offset + i] = (value / mul) & 0xFF
++  }
++
++  return offset + byteLength
+ }
+ 
+-//Main loop, runs PSLG clean up until completion
+-function cleanPSLG(points, edges, colors) {
+-  var modified = false
++Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
++  this[offset] = (value & 0xff)
++  return offset + 1
++}
+ 
+-  //If using colors, augment edges with color data
+-  var prevEdges
+-  if(colors) {
+-    prevEdges = edges
+-    var augEdges = new Array(edges.length)
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      augEdges[i] = [e[0], e[1], colors[i]]
+-    }
+-    edges = augEdges
++function objectWriteUInt16 (buf, value, offset, littleEndian) {
++  if (value < 0) value = 0xffff + value + 1
++  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
++    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
++      (littleEndian ? i : 1 - i) * 8
+   }
++}
+ 
+-  //Run snap rounding until convergence
+-  while(snapRound(points, edges, !!colors)) {
+-    modified = true
++Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++  } else {
++    objectWriteUInt16(this, value, offset, true)
+   }
++  return offset + 2
++}
+ 
+-  //Strip color tags
+-  if(!!colors && modified) {
+-    prevEdges.length = 0
+-    colors.length = 0
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      prevEdges.push([e[0], e[1]])
+-      colors.push(e[2])
+-    }
++Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 8)
++    this[offset + 1] = (value & 0xff)
++  } else {
++    objectWriteUInt16(this, value, offset, false)
+   }
++  return offset + 2
++}
+ 
+-  return modified
++function objectWriteUInt32 (buf, value, offset, littleEndian) {
++  if (value < 0) value = 0xffffffff + value + 1
++  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
++    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
++  }
+ }
+ 
+-},{"./lib/rat-seg-intersect":71,"big-rat":75,"big-rat/cmp":73,"big-rat/to-float":88,"box-intersect":89,"compare-cell":107,"nextafter":97,"rat-vec":99,"robust-segment-intersect":102,"union-find":103}],71:[function(require,module,exports){
+-'use strict'
++Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset + 3] = (value >>> 24)
++    this[offset + 2] = (value >>> 16)
++    this[offset + 1] = (value >>> 8)
++    this[offset] = (value & 0xff)
++  } else {
++    objectWriteUInt32(this, value, offset, true)
++  }
++  return offset + 4
++}
+ 
+-//TODO: Move this to a separate module
++Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 24)
++    this[offset + 1] = (value >>> 16)
++    this[offset + 2] = (value >>> 8)
++    this[offset + 3] = (value & 0xff)
++  } else {
++    objectWriteUInt32(this, value, offset, false)
++  }
++  return offset + 4
++}
+ 
+-module.exports = solveIntersection
++Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) {
++    var limit = Math.pow(2, 8 * byteLength - 1)
+ 
+-var ratMul = require('big-rat/mul')
+-var ratDiv = require('big-rat/div')
+-var ratSub = require('big-rat/sub')
+-var ratSign = require('big-rat/sign')
+-var rvSub = require('rat-vec/sub')
+-var rvAdd = require('rat-vec/add')
+-var rvMuls = require('rat-vec/muls')
++    checkInt(this, value, offset, byteLength, limit - 1, -limit)
++  }
+ 
+-var toFloat = require('big-rat/to-float')
++  var i = 0
++  var mul = 1
++  var sub = 0
++  this[offset] = value & 0xFF
++  while (++i < byteLength && (mul *= 0x100)) {
++    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
++      sub = 1
++    }
++    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
++  }
+ 
+-function ratPerp(a, b) {
+-  return ratSub(ratMul(a[0], b[1]), ratMul(a[1], b[0]))
++  return offset + byteLength
+ }
+ 
+-//Solve for intersection
+-//  x = a + t (b-a)
+-//  (x - c) ^ (d-c) = 0
+-//  (t * (b-a) + (a-c) ) ^ (d-c) = 0
+-//  t * (b-a)^(d-c) = (d-c)^(a-c)
+-//  t = (d-c)^(a-c) / (b-a)^(d-c)
+-
+-function solveIntersection(a, b, c, d) {
+-  var ba = rvSub(b, a)
+-  var dc = rvSub(d, c)
+-
+-  var baXdc = ratPerp(ba, dc)
++Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) {
++    var limit = Math.pow(2, 8 * byteLength - 1)
+ 
+-  if(ratSign(baXdc) === 0) {
+-    return null
++    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+   }
+ 
+-  var ac = rvSub(a, c)
+-  var dcXac = ratPerp(dc, ac)
+-
+-  var t = ratDiv(dcXac, baXdc)
++  var i = byteLength - 1
++  var mul = 1
++  var sub = 0
++  this[offset + i] = value & 0xFF
++  while (--i >= 0 && (mul *= 0x100)) {
++    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
++      sub = 1
++    }
++    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
++  }
+ 
+-  return rvAdd(a, rvMuls(ba, t))
++  return offset + byteLength
+ }
+ 
+-},{"big-rat/div":74,"big-rat/mul":84,"big-rat/sign":86,"big-rat/sub":87,"big-rat/to-float":88,"rat-vec/add":98,"rat-vec/muls":100,"rat-vec/sub":101}],72:[function(require,module,exports){
+-'use strict'
+-
+-var rationalize = require('./lib/rationalize')
+-
+-module.exports = add
+-
+-function add(a, b) {
+-  return rationalize(
+-    a[0].mul(b[1]).add(b[0].mul(a[1])),
+-    a[1].mul(b[1]))
++Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
++  if (value < 0) value = 0xff + value + 1
++  this[offset] = (value & 0xff)
++  return offset + 1
+ }
+ 
+-},{"./lib/rationalize":82}],73:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = cmp
+-
+-function cmp(a, b) {
+-    return a[0].mul(b[1]).cmp(b[0].mul(a[1]))
++Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++  } else {
++    objectWriteUInt16(this, value, offset, true)
++  }
++  return offset + 2
+ }
+ 
+-},{}],74:[function(require,module,exports){
+-'use strict'
+-
+-var rationalize = require('./lib/rationalize')
+-
+-module.exports = div
+-
+-function div(a, b) {
+-  return rationalize(a[0].mul(b[1]), a[1].mul(b[0]))
++Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 8)
++    this[offset + 1] = (value & 0xff)
++  } else {
++    objectWriteUInt16(this, value, offset, false)
++  }
++  return offset + 2
+ }
+ 
+-},{"./lib/rationalize":82}],75:[function(require,module,exports){
+-'use strict'
+-
+-var isRat = require('./is-rat')
+-var isBN = require('./lib/is-bn')
+-var num2bn = require('./lib/num-to-bn')
+-var str2bn = require('./lib/str-to-bn')
+-var rationalize = require('./lib/rationalize')
+-var div = require('./div')
+-
+-module.exports = makeRational
+-
+-function makeRational(numer, denom) {
+-  if(isRat(numer)) {
+-    if(denom) {
+-      return div(numer, makeRational(denom))
+-    }
+-    return [numer[0].clone(), numer[1].clone()]
+-  }
+-  var shift = 0
+-  var a, b
+-  if(isBN(numer)) {
+-    a = numer.clone()
+-  } else if(typeof numer === 'string') {
+-    a = str2bn(numer)
+-  } else if(numer === 0) {
+-    return [num2bn(0), num2bn(1)]
+-  } else if(numer === Math.floor(numer)) {
+-    a = num2bn(numer)
++Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++    this[offset + 2] = (value >>> 16)
++    this[offset + 3] = (value >>> 24)
+   } else {
+-    while(numer !== Math.floor(numer)) {
+-      numer = numer * Math.pow(2, 256)
+-      shift -= 256
+-    }
+-    a = num2bn(numer)
++    objectWriteUInt32(this, value, offset, true)
+   }
+-  if(isRat(denom)) {
+-    a.mul(denom[1])
+-    b = denom[0].clone()
+-  } else if(isBN(denom)) {
+-    b = denom.clone()
+-  } else if(typeof denom === 'string') {
+-    b = str2bn(denom)
+-  } else if(!denom) {
+-    b = num2bn(1)
+-  } else if(denom === Math.floor(denom)) {
+-    b = num2bn(denom)
++  return offset + 4
++}
++
++Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
++  if (value < 0) value = 0xffffffff + value + 1
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 24)
++    this[offset + 1] = (value >>> 16)
++    this[offset + 2] = (value >>> 8)
++    this[offset + 3] = (value & 0xff)
+   } else {
+-    while(denom !== Math.floor(denom)) {
+-      denom = denom * Math.pow(2, 256)
+-      shift += 256
+-    }
+-    b = num2bn(denom)
+-  }
+-  if(shift > 0) {
+-    a = a.shln(shift)
+-  } else if(shift < 0) {
+-    b = b.shln(-shift)
++    objectWriteUInt32(this, value, offset, false)
+   }
+-  return rationalize(a, b)
++  return offset + 4
+ }
+ 
+-},{"./div":74,"./is-rat":76,"./lib/is-bn":80,"./lib/num-to-bn":81,"./lib/rationalize":82,"./lib/str-to-bn":83}],76:[function(require,module,exports){
+-'use strict'
+-
+-var isBN = require('./lib/is-bn')
++function checkIEEE754 (buf, value, offset, ext, max, min) {
++  if (offset + ext > buf.length) throw new RangeError('Index out of range')
++  if (offset < 0) throw new RangeError('Index out of range')
++}
+ 
+-module.exports = isRat
++function writeFloat (buf, value, offset, littleEndian, noAssert) {
++  if (!noAssert) {
++    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
++  }
++  ieee754.write(buf, value, offset, littleEndian, 23, 4)
++  return offset + 4
++}
+ 
+-function isRat(x) {
+-  return Array.isArray(x) && x.length === 2 && isBN(x[0]) && isBN(x[1])
++Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
++  return writeFloat(this, value, offset, true, noAssert)
+ }
+ 
+-},{"./lib/is-bn":80}],77:[function(require,module,exports){
+-'use strict'
++Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
++  return writeFloat(this, value, offset, false, noAssert)
++}
+ 
+-var bn = require('bn.js')
++function writeDouble (buf, value, offset, littleEndian, noAssert) {
++  if (!noAssert) {
++    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
++  }
++  ieee754.write(buf, value, offset, littleEndian, 52, 8)
++  return offset + 8
++}
+ 
+-module.exports = sign
++Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
++  return writeDouble(this, value, offset, true, noAssert)
++}
+ 
+-function sign(x) {
+-  return x.cmp(new bn(0))
++Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
++  return writeDouble(this, value, offset, false, noAssert)
+ }
+ 
+-},{"bn.js":85}],78:[function(require,module,exports){
+-'use strict'
++// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
++Buffer.prototype.copy = function copy (target, targetStart, start, end) {
++  if (!start) start = 0
++  if (!end && end !== 0) end = this.length
++  if (targetStart >= target.length) targetStart = target.length
++  if (!targetStart) targetStart = 0
++  if (end > 0 && end < start) end = start
+ 
+-module.exports = bn2num
++  // Copy 0 bytes; we're done
++  if (end === start) return 0
++  if (target.length === 0 || this.length === 0) return 0
+ 
+-//TODO: Make this better
+-function bn2num(b) {
+-  var l = b.length
+-  var words = b.words
+-  var out = 0
+-  if (l === 1) {
+-    out = words[0]
+-  } else if (l === 2) {
+-    out = words[0] + (words[1] * 0x4000000)
+-  } else {
+-    var out = 0
+-    for (var i = 0; i < l; i++) {
+-      var w = words[i]
+-      out += w * Math.pow(0x4000000, i)
+-    }
++  // Fatal error conditions
++  if (targetStart < 0) {
++    throw new RangeError('targetStart out of bounds')
+   }
+-  return b.sign ? -out : out
+-}
+-
+-},{}],79:[function(require,module,exports){
+-'use strict'
++  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
++  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+ 
+-var db = require('double-bits')
+-var ctz = require('bit-twiddle').countTrailingZeros
++  // Are we oob?
++  if (end > this.length) end = this.length
++  if (target.length - targetStart < end - start) {
++    end = target.length - targetStart + start
++  }
+ 
+-module.exports = ctzNumber
++  var len = end - start
++  var i
+ 
+-//Counts the number of trailing zeros
+-function ctzNumber(x) {
+-  var l = ctz(db.lo(x))
+-  if(l < 32) {
+-    return l
+-  }
+-  var h = ctz(db.hi(x))
+-  if(h > 20) {
+-    return 52
++  if (this === target && start < targetStart && targetStart < end) {
++    // descending copy from end
++    for (i = len - 1; i >= 0; --i) {
++      target[i + targetStart] = this[i + start]
++    }
++  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
++    // ascending copy from start
++    for (i = 0; i < len; ++i) {
++      target[i + targetStart] = this[i + start]
++    }
++  } else {
++    Uint8Array.prototype.set.call(
++      target,
++      this.subarray(start, start + len),
++      targetStart
++    )
+   }
+-  return h + 32
+-}
+ 
+-},{"bit-twiddle":51,"double-bits":96}],80:[function(require,module,exports){
+-'use strict'
+-
+-var BN = require('bn.js')
++  return len
++}
+ 
+-module.exports = isBN
++// Usage:
++//    buffer.fill(number[, offset[, end]])
++//    buffer.fill(buffer[, offset[, end]])
++//    buffer.fill(string[, offset[, end]][, encoding])
++Buffer.prototype.fill = function fill (val, start, end, encoding) {
++  // Handle string cases:
++  if (typeof val === 'string') {
++    if (typeof start === 'string') {
++      encoding = start
++      start = 0
++      end = this.length
++    } else if (typeof end === 'string') {
++      encoding = end
++      end = this.length
++    }
++    if (val.length === 1) {
++      var code = val.charCodeAt(0)
++      if (code < 256) {
++        val = code
++      }
++    }
++    if (encoding !== undefined && typeof encoding !== 'string') {
++      throw new TypeError('encoding must be a string')
++    }
++    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
++      throw new TypeError('Unknown encoding: ' + encoding)
++    }
++  } else if (typeof val === 'number') {
++    val = val & 255
++  }
+ 
+-//Test if x is a bignumber
+-//FIXME: obviously this is the wrong way to do it
+-function isBN(x) {
+-  return x && typeof x === 'object' && Boolean(x.words)
+-}
++  // Invalid ranges are not set to a default, so can range check early.
++  if (start < 0 || this.length < start || this.length < end) {
++    throw new RangeError('Out of range index')
++  }
+ 
+-},{"bn.js":85}],81:[function(require,module,exports){
+-'use strict'
++  if (end <= start) {
++    return this
++  }
+ 
+-var BN = require('bn.js')
+-var db = require('double-bits')
++  start = start >>> 0
++  end = end === undefined ? this.length : end >>> 0
+ 
+-module.exports = num2bn
++  if (!val) val = 0
+ 
+-function num2bn(x) {
+-  var e = db.exponent(x)
+-  if(e < 52) {
+-    return new BN(x)
++  var i
++  if (typeof val === 'number') {
++    for (i = start; i < end; ++i) {
++      this[i] = val
++    }
+   } else {
+-    return (new BN(x * Math.pow(2, 52-e))).shln(e-52)
++    var bytes = Buffer.isBuffer(val)
++      ? val
++      : utf8ToBytes(new Buffer(val, encoding).toString())
++    var len = bytes.length
++    for (i = 0; i < end - start; ++i) {
++      this[i + start] = bytes[i % len]
++    }
+   }
+-}
+ 
+-},{"bn.js":85,"double-bits":96}],82:[function(require,module,exports){
+-'use strict'
++  return this
++}
+ 
+-var num2bn = require('./num-to-bn')
+-var sign = require('./bn-sign')
++// HELPER FUNCTIONS
++// ================
+ 
+-module.exports = rationalize
++var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
+ 
+-function rationalize(numer, denom) {
+-  var snumer = sign(numer)
+-  var sdenom = sign(denom)
+-  if(snumer === 0) {
+-    return [num2bn(0), num2bn(1)]
+-  }
+-  if(sdenom === 0) {
+-    return [num2bn(0), num2bn(0)]
+-  }
+-  if(sdenom < 0) {
+-    numer = numer.neg()
+-    denom = denom.neg()
+-  }
+-  var d = numer.gcd(denom)
+-  if(d.cmpn(1)) {
+-    return [ numer.div(d), denom.div(d) ]
++function base64clean (str) {
++  // Node strips out invalid characters like \n and \t from the string, base64-js does not
++  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
++  // Node converts strings with length < 2 to ''
++  if (str.length < 2) return ''
++  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
++  while (str.length % 4 !== 0) {
++    str = str + '='
+   }
+-  return [ numer, denom ]
++  return str
+ }
+ 
+-},{"./bn-sign":77,"./num-to-bn":81}],83:[function(require,module,exports){
+-'use strict'
++function stringtrim (str) {
++  if (str.trim) return str.trim()
++  return str.replace(/^\s+|\s+$/g, '')
++}
+ 
+-var BN = require('bn.js')
++function toHex (n) {
++  if (n < 16) return '0' + n.toString(16)
++  return n.toString(16)
++}
+ 
+-module.exports = str2BN
++function utf8ToBytes (string, units) {
++  units = units || Infinity
++  var codePoint
++  var length = string.length
++  var leadSurrogate = null
++  var bytes = []
+ 
+-function str2BN(x) {
+-  return new BN(x)
+-}
++  for (var i = 0; i < length; ++i) {
++    codePoint = string.charCodeAt(i)
+ 
+-},{"bn.js":85}],84:[function(require,module,exports){
+-'use strict'
++    // is surrogate component
++    if (codePoint > 0xD7FF && codePoint < 0xE000) {
++      // last char was a lead
++      if (!leadSurrogate) {
++        // no lead yet
++        if (codePoint > 0xDBFF) {
++          // unexpected trail
++          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++          continue
++        } else if (i + 1 === length) {
++          // unpaired lead
++          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++          continue
++        }
+ 
+-var rationalize = require('./lib/rationalize')
++        // valid lead
++        leadSurrogate = codePoint
+ 
+-module.exports = mul
++        continue
++      }
+ 
+-function mul(a, b) {
+-  return rationalize(a[0].mul(b[0]), a[1].mul(b[1]))
+-}
++      // 2 leads in a row
++      if (codePoint < 0xDC00) {
++        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++        leadSurrogate = codePoint
++        continue
++      }
+ 
+-},{"./lib/rationalize":82}],85:[function(require,module,exports){
+-(function (module, exports) {
++      // valid surrogate pair
++      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
++    } else if (leadSurrogate) {
++      // valid bmp char, but last char was a lead
++      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++    }
+ 
+-'use strict';
++    leadSurrogate = null
+ 
+-// Utils
++    // encode utf8
++    if (codePoint < 0x80) {
++      if ((units -= 1) < 0) break
++      bytes.push(codePoint)
++    } else if (codePoint < 0x800) {
++      if ((units -= 2) < 0) break
++      bytes.push(
++        codePoint >> 0x6 | 0xC0,
++        codePoint & 0x3F | 0x80
++      )
++    } else if (codePoint < 0x10000) {
++      if ((units -= 3) < 0) break
++      bytes.push(
++        codePoint >> 0xC | 0xE0,
++        codePoint >> 0x6 & 0x3F | 0x80,
++        codePoint & 0x3F | 0x80
++      )
++    } else if (codePoint < 0x110000) {
++      if ((units -= 4) < 0) break
++      bytes.push(
++        codePoint >> 0x12 | 0xF0,
++        codePoint >> 0xC & 0x3F | 0x80,
++        codePoint >> 0x6 & 0x3F | 0x80,
++        codePoint & 0x3F | 0x80
++      )
++    } else {
++      throw new Error('Invalid code point')
++    }
++  }
+ 
+-function assert(val, msg) {
+-  if (!val)
+-    throw new Error(msg || 'Assertion failed');
++  return bytes
+ }
+ 
+-// Could use `inherits` module, but don't want to move from single file
+-// architecture yet.
+-function inherits(ctor, superCtor) {
+-  ctor.super_ = superCtor;
+-  var TempCtor = function () {};
+-  TempCtor.prototype = superCtor.prototype;
+-  ctor.prototype = new TempCtor();
+-  ctor.prototype.constructor = ctor;
++function asciiToBytes (str) {
++  var byteArray = []
++  for (var i = 0; i < str.length; ++i) {
++    // Node's code seems to be doing this and not & 0x7F..
++    byteArray.push(str.charCodeAt(i) & 0xFF)
++  }
++  return byteArray
+ }
+ 
+-// BN
++function utf16leToBytes (str, units) {
++  var c, hi, lo
++  var byteArray = []
++  for (var i = 0; i < str.length; ++i) {
++    if ((units -= 2) < 0) break
+ 
+-function BN(number, base, endian) {
+-  // May be `new BN(bn)` ?
+-  if (number !== null &&
+-      typeof number === 'object' &&
+-      Array.isArray(number.words)) {
+-    return number;
++    c = str.charCodeAt(i)
++    hi = c >> 8
++    lo = c % 256
++    byteArray.push(lo)
++    byteArray.push(hi)
+   }
+ 
+-  this.sign = false;
+-  this.words = null;
+-  this.length = 0;
++  return byteArray
++}
+ 
+-  // Reduction context
+-  this.red = null;
++function base64ToBytes (str) {
++  return base64.toByteArray(base64clean(str))
++}
+ 
+-  if (base === 'le' || base === 'be') {
+-    endian = base;
+-    base = 10;
++function blitBuffer (src, dst, offset, length) {
++  for (var i = 0; i < length; ++i) {
++    if ((i + offset >= dst.length) || (i >= src.length)) break
++    dst[i + offset] = src[i]
+   }
++  return i
++}
+ 
+-  if (number !== null)
+-    this._init(number || 0, base || 10, endian || 'be');
++function isnan (val) {
++  return val !== val // eslint-disable-line no-self-compare
+ }
+-if (typeof module === 'object')
+-  module.exports = BN;
+-else
+-  exports.BN = BN;
+ 
+-BN.BN = BN;
+-BN.wordSize = 26;
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"base64-js":60,"ieee754":223,"isarray":61}],60:[function(require,module,exports){
++'use strict'
+ 
+-BN.prototype._init = function init(number, base, endian) {
+-  if (typeof number === 'number') {
+-    return this._initNumber(number, base, endian);
+-  } else if (typeof number === 'object') {
+-    return this._initArray(number, base, endian);
++exports.toByteArray = toByteArray
++exports.fromByteArray = fromByteArray
++
++var lookup = []
++var revLookup = []
++var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
++
++function init () {
++  var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
++  for (var i = 0, len = code.length; i < len; ++i) {
++    lookup[i] = code[i]
++    revLookup[code.charCodeAt(i)] = i
+   }
+-  if (base === 'hex')
+-    base = 16;
+-  assert(base === (base | 0) && base >= 2 && base <= 36);
+ 
+-  number = number.toString().replace(/\s+/g, '');
+-  var start = 0;
+-  if (number[0] === '-')
+-    start++;
++  revLookup['-'.charCodeAt(0)] = 62
++  revLookup['_'.charCodeAt(0)] = 63
++}
+ 
+-  if (base === 16)
+-    this._parseHex(number, start);
+-  else
+-    this._parseBase(number, base, start);
++init()
+ 
+-  if (number[0] === '-')
+-    this.sign = true;
++function toByteArray (b64) {
++  var i, j, l, tmp, placeHolders, arr
++  var len = b64.length
+ 
+-  this.strip();
++  if (len % 4 > 0) {
++    throw new Error('Invalid string. Length must be a multiple of 4')
++  }
+ 
+-  if (endian !== 'le')
+-    return;
++  // the number of equal signs (place holders)
++  // if there are two placeholders, than the two characters before it
++  // represent one byte
++  // if there is only one, then the three characters before it represent 2 bytes
++  // this is just a cheap hack to not do indexOf twice
++  placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
+ 
+-  this._initArray(this.toArray(), base, endian);
+-};
++  // base64 is 4/3 + up to two characters of the original data
++  arr = new Arr(len * 3 / 4 - placeHolders)
+ 
+-BN.prototype._initNumber = function _initNumber(number, base, endian) {
+-  if (number < 0) {
+-    this.sign = true;
+-    number = -number;
++  // if there are placeholders, only get up to the last complete 4 chars
++  l = placeHolders > 0 ? len - 4 : len
++
++  var L = 0
++
++  for (i = 0, j = 0; i < l; i += 4, j += 3) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
++    arr[L++] = (tmp >> 16) & 0xFF
++    arr[L++] = (tmp >> 8) & 0xFF
++    arr[L++] = tmp & 0xFF
+   }
+-  if (number < 0x4000000) {
+-    this.words = [ number & 0x3ffffff ];
+-    this.length = 1;
+-  } else if (number < 0x10000000000000) {
+-    this.words = [
+-      number & 0x3ffffff,
+-      (number / 0x4000000) & 0x3ffffff
+-    ];
+-    this.length = 2;
+-  } else {
+-    assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
+-    this.words = [
+-      number & 0x3ffffff,
+-      (number / 0x4000000) & 0x3ffffff,
+-      1
+-    ];
+-    this.length = 3;
++
++  if (placeHolders === 2) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
++    arr[L++] = tmp & 0xFF
++  } else if (placeHolders === 1) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
++    arr[L++] = (tmp >> 8) & 0xFF
++    arr[L++] = tmp & 0xFF
+   }
+ 
+-  if (endian !== 'le')
+-    return;
++  return arr
++}
+ 
+-  // Reverse the bytes
+-  this._initArray(this.toArray(), base, endian);
+-};
++function tripletToBase64 (num) {
++  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
++}
+ 
+-BN.prototype._initArray = function _initArray(number, base, endian) {
+-  // Perhaps a Uint8Array
+-  assert(typeof number.length === 'number');
+-  if (number.length <= 0) {
+-    this.words = [ 0 ];
+-    this.length = 1;
+-    return this;
++function encodeChunk (uint8, start, end) {
++  var tmp
++  var output = []
++  for (var i = start; i < end; i += 3) {
++    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
++    output.push(tripletToBase64(tmp))
+   }
++  return output.join('')
++}
+ 
+-  this.length = Math.ceil(number.length / 3);
+-  this.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    this.words[i] = 0;
++function fromByteArray (uint8) {
++  var tmp
++  var len = uint8.length
++  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
++  var output = ''
++  var parts = []
++  var maxChunkLength = 16383 // must be multiple of 3
+ 
+-  var off = 0;
+-  if (endian === 'be') {
+-    for (var i = number.length - 1, j = 0; i >= 0; i -= 3) {
+-      var w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
+-      this.words[j] |= (w << off) & 0x3ffffff;
+-      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+-      off += 24;
+-      if (off >= 26) {
+-        off -= 26;
+-        j++;
+-      }
+-    }
+-  } else if (endian === 'le') {
+-    for (var i = 0, j = 0; i < number.length; i += 3) {
+-      var w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
+-      this.words[j] |= (w << off) & 0x3ffffff;
+-      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+-      off += 24;
+-      if (off >= 26) {
+-        off -= 26;
+-        j++;
+-      }
+-    }
++  // go through the array every three bytes, we'll deal with trailing stuff later
++  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
++    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+   }
+-  return this.strip();
++
++  // pad the end with zeros, but make sure to not forget the extra bytes
++  if (extraBytes === 1) {
++    tmp = uint8[len - 1]
++    output += lookup[tmp >> 2]
++    output += lookup[(tmp << 4) & 0x3F]
++    output += '=='
++  } else if (extraBytes === 2) {
++    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
++    output += lookup[tmp >> 10]
++    output += lookup[(tmp >> 4) & 0x3F]
++    output += lookup[(tmp << 2) & 0x3F]
++    output += '='
++  }
++
++  parts.push(output)
++
++  return parts.join('')
++}
++
++},{}],61:[function(require,module,exports){
++var toString = {}.toString;
++
++module.exports = Array.isArray || function (arr) {
++  return toString.call(arr) == '[object Array]';
+ };
+ 
+-function parseHex(str, start, end) {
+-  var r = 0;
+-  var len = Math.min(str.length, end);
+-  for (var i = start; i < len; i++) {
+-    var c = str.charCodeAt(i) - 48;
++},{}],62:[function(require,module,exports){
++'use strict'
+ 
+-    r <<= 4;
++var monotoneTriangulate = require('./lib/monotone')
++var makeIndex = require('./lib/triangulation')
++var delaunayFlip = require('./lib/delaunay')
++var filterTriangulation = require('./lib/filter')
+ 
+-    // 'a' - 'f'
+-    if (c >= 49 && c <= 54)
+-      r |= c - 49 + 0xa;
++module.exports = cdt2d
+ 
+-    // 'A' - 'F'
+-    else if (c >= 17 && c <= 22)
+-      r |= c - 17 + 0xa;
++function canonicalizeEdge(e) {
++  return [Math.min(e[0], e[1]), Math.max(e[0], e[1])]
++}
+ 
+-    // '0' - '9'
+-    else
+-      r |= c & 0xf;
++function compareEdge(a, b) {
++  return a[0]-b[0] || a[1]-b[1]
++}
++
++function canonicalizeEdges(edges) {
++  return edges.map(canonicalizeEdge).sort(compareEdge)
++}
++
++function getDefault(options, property, dflt) {
++  if(property in options) {
++    return options[property]
+   }
+-  return r;
++  return dflt
+ }
+ 
+-BN.prototype._parseHex = function _parseHex(number, start) {
+-  // Create possibly bigger array to ensure that it fits the number
+-  this.length = Math.ceil((number.length - start) / 6);
+-  this.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    this.words[i] = 0;
++function cdt2d(points, edges, options) {
+ 
+-  // Scan 24-bit chunks and add them to the number
+-  var off = 0;
+-  for (var i = number.length - 6, j = 0; i >= start; i -= 6) {
+-    var w = parseHex(number, i, i + 6);
+-    this.words[j] |= (w << off) & 0x3ffffff;
+-    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
+-    off += 24;
+-    if (off >= 26) {
+-      off -= 26;
+-      j++;
+-    }
++  if(!Array.isArray(edges)) {
++    options = edges || {}
++    edges = []
++  } else {
++    options = options || {}
++    edges = edges || []
+   }
+-  if (i + 6 !== start) {
+-    var w = parseHex(number, start, i + 6);
+-    this.words[j] |= (w << off) & 0x3ffffff;
+-    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
++
++  //Parse out options
++  var delaunay = !!getDefault(options, 'delaunay', true)
++  var interior = !!getDefault(options, 'interior', true)
++  var exterior = !!getDefault(options, 'exterior', true)
++  var infinity = !!getDefault(options, 'infinity', false)
++
++  //Handle trivial case
++  if((!interior && !exterior) || points.length === 0) {
++    return []
+   }
+-  this.strip();
+-};
+ 
+-function parseBase(str, start, end, mul) {
+-  var r = 0;
+-  var len = Math.min(str.length, end);
+-  for (var i = start; i < len; i++) {
+-    var c = str.charCodeAt(i) - 48;
++  //Construct initial triangulation
++  var cells = monotoneTriangulate(points, edges)
+ 
+-    r *= mul;
++  //If delaunay refinement needed, then improve quality by edge flipping
++  if(delaunay || interior !== exterior || infinity) {
+ 
+-    // 'a'
+-    if (c >= 49)
+-      r += c - 49 + 0xa;
++    //Index all of the cells to support fast neighborhood queries
++    var triangulation = makeIndex(points.length, canonicalizeEdges(edges))
++    for(var i=0; i<cells.length; ++i) {
++      var f = cells[i]
++      triangulation.addTriangle(f[0], f[1], f[2])
++    }
+ 
+-    // 'A'
+-    else if (c >= 17)
+-      r += c - 17 + 0xa;
++    //Run edge flipping
++    if(delaunay) {
++      delaunayFlip(points, triangulation)
++    }
+ 
+-    // '0' - '9'
+-    else
+-      r += c;
++    //Filter points
++    if(!exterior) {
++      return filterTriangulation(triangulation, -1)
++    } else if(!interior) {
++      return filterTriangulation(triangulation,  1, infinity)
++    } else if(infinity) {
++      return filterTriangulation(triangulation, 0, infinity)
++    } else {
++      return triangulation.cells()
++    }
++    
++  } else {
++    return cells
+   }
+-  return r;
+ }
+ 
+-BN.prototype._parseBase = function _parseBase(number, base, start) {
+-  // Initialize as zero
+-  this.words = [ 0 ];
+-  this.length = 1;
++},{"./lib/delaunay":63,"./lib/filter":64,"./lib/monotone":65,"./lib/triangulation":66}],63:[function(require,module,exports){
++'use strict'
+ 
+-  // Find length of limb in base
+-  for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base)
+-    limbLen++;
+-  limbLen--;
+-  limbPow = (limbPow / base) | 0;
++var inCircle = require('robust-in-sphere')[4]
++var bsearch = require('binary-search-bounds')
+ 
+-  var total = number.length - start;
+-  var mod = total % limbLen;
+-  var end = Math.min(total, total - mod) + start;
++module.exports = delaunayRefine
+ 
+-  var word = 0;
+-  for (var i = start; i < end; i += limbLen) {
+-    word = parseBase(number, i, i + limbLen, base);
++function testFlip(points, triangulation, stack, a, b, x) {
++  var y = triangulation.opposite(a, b)
+ 
+-    this.imuln(limbPow);
+-    if (this.words[0] + word < 0x4000000)
+-      this.words[0] += word;
+-    else
+-      this._iaddn(word);
++  //Test boundary edge
++  if(y < 0) {
++    return
+   }
+ 
+-  if (mod !== 0) {
+-    var pow = 1;
+-    var word = parseBase(number, i, number.length, base);
++  //Swap edge if order flipped
++  if(b < a) {
++    var tmp = a
++    a = b
++    b = tmp
++    tmp = x
++    x = y
++    y = tmp
++  }
+ 
+-    for (var i = 0; i < mod; i++)
+-      pow *= base;
+-    this.imuln(pow);
+-    if (this.words[0] + word < 0x4000000)
+-      this.words[0] += word;
+-    else
+-      this._iaddn(word);
++  //Test if edge is constrained
++  if(triangulation.isConstraint(a, b)) {
++    return
+   }
+-};
+ 
+-BN.prototype.copy = function copy(dest) {
+-  dest.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    dest.words[i] = this.words[i];
+-  dest.length = this.length;
+-  dest.sign = this.sign;
+-  dest.red = this.red;
+-};
++  //Test if edge is delaunay
++  if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
++    stack.push(a, b)
++  }
++}
+ 
+-BN.prototype.clone = function clone() {
+-  var r = new BN(null);
+-  this.copy(r);
+-  return r;
+-};
++//Assume edges are sorted lexicographically
++function delaunayRefine(points, triangulation) {
++  var stack = []
+ 
+-// Remove leading `0` from `this`
+-BN.prototype.strip = function strip() {
+-  while (this.length > 1 && this.words[this.length - 1] === 0)
+-    this.length--;
+-  return this._normSign();
+-};
++  var numPoints = points.length
++  var stars = triangulation.stars
++  for(var a=0; a<numPoints; ++a) {
++    var star = stars[a]
++    for(var j=1; j<star.length; j+=2) {
++      var b = star[j]
+ 
+-BN.prototype._normSign = function _normSign() {
+-  // -0 = 0
+-  if (this.length === 1 && this.words[0] === 0)
+-    this.sign = false;
+-  return this;
+-};
++      //If order is not consistent, then skip edge
++      if(b < a) {
++        continue
++      }
+ 
+-BN.prototype.inspect = function inspect() {
+-  return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
+-};
++      //Check if edge is constrained
++      if(triangulation.isConstraint(a, b)) {
++        continue
++      }
+ 
+-/*
++      //Find opposite edge
++      var x = star[j-1], y = -1
++      for(var k=1; k<star.length; k+=2) {
++        if(star[k-1] === b) {
++          y = star[k]
++          break
++        }
++      }
+ 
+-var zeros = [];
+-var groupSizes = [];
+-var groupBases = [];
++      //If this is a boundary edge, don't flip it
++      if(y < 0) {
++        continue
++      }
+ 
+-var s = '';
+-var i = -1;
+-while (++i < BN.wordSize) {
+-  zeros[i] = s;
+-  s += '0';
+-}
+-groupSizes[0] = 0;
+-groupSizes[1] = 0;
+-groupBases[0] = 0;
+-groupBases[1] = 0;
+-var base = 2 - 1;
+-while (++base < 36 + 1) {
+-  var groupSize = 0;
+-  var groupBase = 1;
+-  while (groupBase < (1 << BN.wordSize) / base) {
+-    groupBase *= base;
+-    groupSize += 1;
++      //If edge is in circle, flip it
++      if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
++        stack.push(a, b)
++      }
++    }
+   }
+-  groupSizes[base] = groupSize;
+-  groupBases[base] = groupBase;
+-}
+-
+-*/
+-
+-var zeros = [
+-  '',
+-  '0',
+-  '00',
+-  '000',
+-  '0000',
+-  '00000',
+-  '000000',
+-  '0000000',
+-  '00000000',
+-  '000000000',
+-  '0000000000',
+-  '00000000000',
+-  '000000000000',
+-  '0000000000000',
+-  '00000000000000',
+-  '000000000000000',
+-  '0000000000000000',
+-  '00000000000000000',
+-  '000000000000000000',
+-  '0000000000000000000',
+-  '00000000000000000000',
+-  '000000000000000000000',
+-  '0000000000000000000000',
+-  '00000000000000000000000',
+-  '000000000000000000000000',
+-  '0000000000000000000000000'
+-];
+-
+-var groupSizes = [
+-  0, 0,
+-  25, 16, 12, 11, 10, 9, 8,
+-  8, 7, 7, 7, 7, 6, 6,
+-  6, 6, 6, 6, 6, 5, 5,
+-  5, 5, 5, 5, 5, 5, 5,
+-  5, 5, 5, 5, 5, 5, 5
+-];
+ 
+-var groupBases = [
+-  0, 0,
+-  33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
+-  43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
+-  16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
+-  6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
+-  24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
+-];
++  while(stack.length > 0) {
++    var b = stack.pop()
++    var a = stack.pop()
+ 
+-BN.prototype.toString = function toString(base, padding) {
+-  base = base || 10;
+-  if (base === 16 || base === 'hex') {
+-    var out = '';
+-    var off = 0;
+-    var padding = padding | 0 || 1;
+-    var carry = 0;
+-    for (var i = 0; i < this.length; i++) {
+-      var w = this.words[i];
+-      var word = (((w << off) | carry) & 0xffffff).toString(16);
+-      carry = (w >>> (24 - off)) & 0xffffff;
+-      if (carry !== 0 || i !== this.length - 1)
+-        out = zeros[6 - word.length] + word + out;
+-      else
+-        out = word + out;
+-      off += 2;
+-      if (off >= 26) {
+-        off -= 26;
+-        i--;
++    //Find opposite pairs
++    var x = -1, y = -1
++    var star = stars[a]
++    for(var i=1; i<star.length; i+=2) {
++      var s = star[i-1]
++      var t = star[i]
++      if(s === b) {
++        y = t
++      } else if(t === b) {
++        x = s
+       }
+     }
+-    if (carry !== 0)
+-      out = carry.toString(16) + out;
+-    while (out.length % padding !== 0)
+-      out = '0' + out;
+-    if (this.sign)
+-      out = '-' + out;
+-    return out;
+-  } else if (base === (base | 0) && base >= 2 && base <= 36) {
+-    // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
+-    var groupSize = groupSizes[base];
+-    // var groupBase = Math.pow(base, groupSize);
+-    var groupBase = groupBases[base];
+-    var out = '';
+-    var c = this.clone();
+-    c.sign = false;
+-    while (c.cmpn(0) !== 0) {
+-      var r = c.modn(groupBase).toString(base);
+-      c = c.idivn(groupBase);
+ 
+-      if (c.cmpn(0) !== 0)
+-        out = zeros[groupSize - r.length] + r + out;
+-      else
+-        out = r + out;
++    //If x/y are both valid then skip edge
++    if(x < 0 || y < 0) {
++      continue
+     }
+-    if (this.cmpn(0) === 0)
+-      out = '0' + out;
+-    if (this.sign)
+-      out = '-' + out;
+-    return out;
+-  } else {
+-    assert(false, 'Base should be between 2 and 36');
+-  }
+-};
+ 
+-BN.prototype.toJSON = function toJSON() {
+-  return this.toString(16);
+-};
++    //If edge is now delaunay, then don't flip it
++    if(inCircle(points[a], points[b], points[x], points[y]) >= 0) {
++      continue
++    }
+ 
+-BN.prototype.toArray = function toArray(endian) {
+-  this.strip();
+-  var res = new Array(this.byteLength());
+-  res[0] = 0;
++    //Flip the edge
++    triangulation.flip(a, b)
+ 
+-  var q = this.clone();
+-  if (endian !== 'le') {
+-    // Assume big-endian
+-    for (var i = 0; q.cmpn(0) !== 0; i++) {
+-      var b = q.andln(0xff);
+-      q.ishrn(8);
++    //Test flipping neighboring edges
++    testFlip(points, triangulation, stack, x, a, y)
++    testFlip(points, triangulation, stack, a, y, x)
++    testFlip(points, triangulation, stack, y, b, x)
++    testFlip(points, triangulation, stack, b, x, y)
++  }
++}
+ 
+-      res[res.length - i - 1] = b;
+-    }
+-  } else {
+-    // Assume little-endian
+-    for (var i = 0; q.cmpn(0) !== 0; i++) {
+-      var b = q.andln(0xff);
+-      q.ishrn(8);
++},{"binary-search-bounds":67,"robust-in-sphere":416}],64:[function(require,module,exports){
++'use strict'
+ 
+-      res[i] = b;
+-    }
+-  }
++var bsearch = require('binary-search-bounds')
+ 
+-  return res;
+-};
++module.exports = classifyFaces
+ 
+-if (Math.clz32) {
+-  BN.prototype._countBits = function _countBits(w) {
+-    return 32 - Math.clz32(w);
+-  };
+-} else {
+-  BN.prototype._countBits = function _countBits(w) {
+-    var t = w;
+-    var r = 0;
+-    if (t >= 0x1000) {
+-      r += 13;
+-      t >>>= 13;
+-    }
+-    if (t >= 0x40) {
+-      r += 7;
+-      t >>>= 7;
++function FaceIndex(cells, neighbor, constraint, flags, active, next, boundary) {
++  this.cells       = cells
++  this.neighbor    = neighbor
++  this.flags       = flags
++  this.constraint  = constraint
++  this.active      = active
++  this.next        = next
++  this.boundary    = boundary
++}
++
++var proto = FaceIndex.prototype
++
++function compareCell(a, b) {
++  return a[0] - b[0] ||
++         a[1] - b[1] ||
++         a[2] - b[2]
++}
++
++proto.locate = (function() {
++  var key = [0,0,0]
++  return function(a, b, c) {
++    var x = a, y = b, z = c
++    if(b < c) {
++      if(b < a) {
++        x = b
++        y = c
++        z = a
++      }
++    } else if(c < a) {
++      x = c
++      y = a
++      z = b
+     }
+-    if (t >= 0x8) {
+-      r += 4;
+-      t >>>= 4;
++    if(x < 0) {
++      return -1
+     }
+-    if (t >= 0x02) {
+-      r += 2;
+-      t >>>= 2;
++    key[0] = x
++    key[1] = y
++    key[2] = z
++    return bsearch.eq(this.cells, key, compareCell)
++  }
++})()
++
++function indexCells(triangulation, infinity) {
++  //First get cells and canonicalize
++  var cells = triangulation.cells()
++  var nc = cells.length
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    var x = c[0], y = c[1], z = c[2]
++    if(y < z) {
++      if(y < x) {
++        c[0] = y
++        c[1] = z
++        c[2] = x
++      }
++    } else if(z < x) {
++      c[0] = z
++      c[1] = x
++      c[2] = y
+     }
+-    return r + t;
+-  };
+-}
++  }
++  cells.sort(compareCell)
+ 
+-BN.prototype._zeroBits = function _zeroBits(w) {
+-  // Short-cut
+-  if (w === 0)
+-    return 26;
++  //Initialize flag array
++  var flags = new Array(nc)
++  for(var i=0; i<flags.length; ++i) {
++    flags[i] = 0
++  }
+ 
+-  var t = w;
+-  var r = 0;
+-  if ((t & 0x1fff) === 0) {
+-    r += 13;
+-    t >>>= 13;
++  //Build neighbor index, initialize queues
++  var active = []
++  var next   = []
++  var neighbor = new Array(3*nc)
++  var constraint = new Array(3*nc)
++  var boundary = null
++  if(infinity) {
++    boundary = []
+   }
+-  if ((t & 0x7f) === 0) {
+-    r += 7;
+-    t >>>= 7;
++  var index = new FaceIndex(
++    cells,
++    neighbor,
++    constraint,
++    flags,
++    active,
++    next,
++    boundary)
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    for(var j=0; j<3; ++j) {
++      var x = c[j], y = c[(j+1)%3]
++      var a = neighbor[3*i+j] = index.locate(y, x, triangulation.opposite(y, x))
++      var b = constraint[3*i+j] = triangulation.isConstraint(x, y)
++      if(a < 0) {
++        if(b) {
++          next.push(i)
++        } else {
++          active.push(i)
++          flags[i] = 1
++        }
++        if(infinity) {
++          boundary.push([y, x, -1])
++        }
++      }
++    }
+   }
+-  if ((t & 0xf) === 0) {
+-    r += 4;
+-    t >>>= 4;
++  return index
++}
++
++function filterCells(cells, flags, target) {
++  var ptr = 0
++  for(var i=0; i<cells.length; ++i) {
++    if(flags[i] === target) {
++      cells[ptr++] = cells[i]
++    }
+   }
+-  if ((t & 0x3) === 0) {
+-    r += 2;
+-    t >>>= 2;
++  cells.length = ptr
++  return cells
++}
++
++function classifyFaces(triangulation, target, infinity) {
++  var index = indexCells(triangulation, infinity)
++
++  if(target === 0) {
++    if(infinity) {
++      return index.cells.concat(index.boundary)
++    } else {
++      return index.cells
++    }
+   }
+-  if ((t & 0x1) === 0)
+-    r++;
+-  return r;
+-};
+ 
+-// Return number of used bits in a BN
+-BN.prototype.bitLength = function bitLength() {
+-  var hi = 0;
+-  var w = this.words[this.length - 1];
+-  var hi = this._countBits(w);
+-  return (this.length - 1) * 26 + hi;
+-};
++  var side = 1
++  var active = index.active
++  var next = index.next
++  var flags = index.flags
++  var cells = index.cells
++  var constraint = index.constraint
++  var neighbor = index.neighbor
+ 
+-// Number of trailing zero bits
+-BN.prototype.zeroBits = function zeroBits() {
+-  if (this.cmpn(0) === 0)
+-    return 0;
++  while(active.length > 0 || next.length > 0) {
++    while(active.length > 0) {
++      var t = active.pop()
++      if(flags[t] === -side) {
++        continue
++      }
++      flags[t] = side
++      var c = cells[t]
++      for(var j=0; j<3; ++j) {
++        var f = neighbor[3*t+j]
++        if(f >= 0 && flags[f] === 0) {
++          if(constraint[3*t+j]) {
++            next.push(f)
++          } else {
++            active.push(f)
++            flags[f] = side
++          }
++        }
++      }
++    }
+ 
+-  var r = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var b = this._zeroBits(this.words[i]);
+-    r += b;
+-    if (b !== 26)
+-      break;
++    //Swap arrays and loop
++    var tmp = next
++    next = active
++    active = tmp
++    next.length = 0
++    side = -side
+   }
+-  return r;
+-};
+ 
+-BN.prototype.byteLength = function byteLength() {
+-  return Math.ceil(this.bitLength() / 8);
+-};
++  var result = filterCells(cells, flags, target)
++  if(infinity) {
++    return result.concat(index.boundary)
++  }
++  return result
++}
+ 
+-// Return negative clone of `this`
+-BN.prototype.neg = function neg() {
+-  if (this.cmpn(0) === 0)
+-    return this.clone();
++},{"binary-search-bounds":67}],65:[function(require,module,exports){
++'use strict'
+ 
+-  var r = this.clone();
+-  r.sign = !this.sign;
+-  return r;
+-};
++var bsearch = require('binary-search-bounds')
++var orient = require('robust-orientation')[3]
+ 
++var EVENT_POINT = 0
++var EVENT_END   = 1
++var EVENT_START = 2
+ 
+-// Or `num` with `this` in-place
+-BN.prototype.ior = function ior(num) {
+-  this.sign = this.sign || num.sign;
++module.exports = monotoneTriangulate
+ 
+-  while (this.length < num.length)
+-    this.words[this.length++] = 0;
++//A partial convex hull fragment, made of two unimonotone polygons
++function PartialHull(a, b, idx, lowerIds, upperIds) {
++  this.a = a
++  this.b = b
++  this.idx = idx
++  this.lowerIds = lowerIds
++  this.upperIds = upperIds
++}
+ 
+-  for (var i = 0; i < num.length; i++)
+-    this.words[i] = this.words[i] | num.words[i];
++//An event in the sweep line procedure
++function Event(a, b, type, idx) {
++  this.a    = a
++  this.b    = b
++  this.type = type
++  this.idx  = idx
++}
+ 
+-  return this.strip();
+-};
++//This is used to compare events for the sweep line procedure
++// Points are:
++//  1. sorted lexicographically
++//  2. sorted by type  (point < end < start)
++//  3. segments sorted by winding order
++//  4. sorted by index
++function compareEvent(a, b) {
++  var d =
++    (a.a[0] - b.a[0]) ||
++    (a.a[1] - b.a[1]) ||
++    (a.type - b.type)
++  if(d) { return d }
++  if(a.type !== EVENT_POINT) {
++    d = orient(a.a, a.b, b.b)
++    if(d) { return d }
++  }
++  return a.idx - b.idx
++}
+ 
++function testPoint(hull, p) {
++  return orient(hull.a, hull.b, p)
++}
+ 
+-// Or `num` with `this`
+-BN.prototype.or = function or(num) {
+-  if (this.length > num.length)
+-    return this.clone().ior(num);
+-  else
+-    return num.clone().ior(this);
+-};
++function addPoint(cells, hulls, points, p, idx) {
++  var lo = bsearch.lt(hulls, p, testPoint)
++  var hi = bsearch.gt(hulls, p, testPoint)
++  for(var i=lo; i<hi; ++i) {
++    var hull = hulls[i]
+ 
++    //Insert p into lower hull
++    var lowerIds = hull.lowerIds
++    var m = lowerIds.length
++    while(m > 1 && orient(
++        points[lowerIds[m-2]],
++        points[lowerIds[m-1]],
++        p) > 0) {
++      cells.push(
++        [lowerIds[m-1],
++         lowerIds[m-2],
++         idx])
++      m -= 1
++    }
++    lowerIds.length = m
++    lowerIds.push(idx)
+ 
+-// And `num` with `this` in-place
+-BN.prototype.iand = function iand(num) {
+-  this.sign = this.sign && num.sign;
++    //Insert p into upper hull
++    var upperIds = hull.upperIds
++    var m = upperIds.length
++    while(m > 1 && orient(
++        points[upperIds[m-2]],
++        points[upperIds[m-1]],
++        p) < 0) {
++      cells.push(
++        [upperIds[m-2],
++         upperIds[m-1],
++         idx])
++      m -= 1
++    }
++    upperIds.length = m
++    upperIds.push(idx)
++  }
++}
+ 
+-  // b = min-length(num, this)
+-  var b;
+-  if (this.length > num.length)
+-    b = num;
+-  else
+-    b = this;
++function findSplit(hull, edge) {
++  var d
++  if(hull.a[0] < edge.a[0]) {
++    d = orient(hull.a, hull.b, edge.a)
++  } else {
++    d = orient(edge.b, edge.a, hull.a)
++  }
++  if(d) { return d }
++  if(edge.b[0] < hull.b[0]) {
++    d = orient(hull.a, hull.b, edge.b)
++  } else {
++    d = orient(edge.b, edge.a, hull.b)
++  }
++  return d || hull.idx - edge.idx
++}
+ 
+-  for (var i = 0; i < b.length; i++)
+-    this.words[i] = this.words[i] & num.words[i];
++function splitHulls(hulls, points, event) {
++  var splitIdx = bsearch.le(hulls, event, findSplit)
++  var hull = hulls[splitIdx]
++  var upperIds = hull.upperIds
++  var x = upperIds[upperIds.length-1]
++  hull.upperIds = [x]
++  hulls.splice(splitIdx+1, 0,
++    new PartialHull(event.a, event.b, event.idx, [x], upperIds))
++}
+ 
+-  this.length = b.length;
+ 
+-  return this.strip();
+-};
++function mergeHulls(hulls, points, event) {
++  //Swap pointers for merge search
++  var tmp = event.a
++  event.a = event.b
++  event.b = tmp
++  var mergeIdx = bsearch.eq(hulls, event, findSplit)
++  var upper = hulls[mergeIdx]
++  var lower = hulls[mergeIdx-1]
++  lower.upperIds = upper.upperIds
++  hulls.splice(mergeIdx, 1)
++}
+ 
+ 
+-// And `num` with `this`
+-BN.prototype.and = function and(num) {
+-  if (this.length > num.length)
+-    return this.clone().iand(num);
+-  else
+-    return num.clone().iand(this);
+-};
++function monotoneTriangulate(points, edges) {
+ 
++  var numPoints = points.length
++  var numEdges = edges.length
+ 
+-// Xor `num` with `this` in-place
+-BN.prototype.ixor = function ixor(num) {
+-  this.sign = this.sign || num.sign;
++  var events = []
+ 
+-  // a.length > b.length
+-  var a;
+-  var b;
+-  if (this.length > num.length) {
+-    a = this;
+-    b = num;
+-  } else {
+-    a = num;
+-    b = this;
++  //Create point events
++  for(var i=0; i<numPoints; ++i) {
++    events.push(new Event(
++      points[i],
++      null,
++      EVENT_POINT,
++      i))
+   }
+ 
+-  for (var i = 0; i < b.length; i++)
+-    this.words[i] = a.words[i] ^ b.words[i];
++  //Create edge events
++  for(var i=0; i<numEdges; ++i) {
++    var e = edges[i]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    if(a[0] < b[0]) {
++      events.push(
++        new Event(a, b, EVENT_START, i),
++        new Event(b, a, EVENT_END, i))
++    } else if(a[0] > b[0]) {
++      events.push(
++        new Event(b, a, EVENT_START, i),
++        new Event(a, b, EVENT_END, i))
++    }
++  }
+ 
+-  if (this !== a)
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
++  //Sort events
++  events.sort(compareEvent)
+ 
+-  this.length = a.length;
++  //Initialize hull
++  var minX = events[0].a[0] - (1 + Math.abs(events[0].a[0])) * Math.pow(2, -52)
++  var hull = [ new PartialHull([minX, 1], [minX, 0], -1, [], [], [], []) ]
+ 
+-  return this.strip();
+-};
++  //Process events in order
++  var cells = []
++  for(var i=0, numEvents=events.length; i<numEvents; ++i) {
++    var event = events[i]
++    var type = event.type
++    if(type === EVENT_POINT) {
++      addPoint(cells, hull, points, event.a, event.idx)
++    } else if(type === EVENT_START) {
++      splitHulls(hull, points, event)
++    } else {
++      mergeHulls(hull, points, event)
++    }
++  }
+ 
++  //Return triangulation
++  return cells
++}
+ 
+-// Xor `num` with `this`
+-BN.prototype.xor = function xor(num) {
+-  if (this.length > num.length)
+-    return this.clone().ixor(num);
+-  else
+-    return num.clone().ixor(this);
+-};
++},{"binary-search-bounds":67,"robust-orientation":418}],66:[function(require,module,exports){
++'use strict'
+ 
++var bsearch = require('binary-search-bounds')
+ 
+-// Set `bit` of `this`
+-BN.prototype.setn = function setn(bit, val) {
+-  assert(typeof bit === 'number' && bit >= 0);
++module.exports = createTriangulation
+ 
+-  var off = (bit / 26) | 0;
+-  var wbit = bit % 26;
++function Triangulation(stars, edges) {
++  this.stars = stars
++  this.edges = edges
++}
+ 
+-  while (this.length <= off)
+-    this.words[this.length++] = 0;
++var proto = Triangulation.prototype
+ 
+-  if (val)
+-    this.words[off] = this.words[off] | (1 << wbit);
+-  else
+-    this.words[off] = this.words[off] & ~(1 << wbit);
+-
+-  return this.strip();
+-};
+-
+-
+-// Add `num` to `this` in-place
+-BN.prototype.iadd = function iadd(num) {
+-  // negative + positive
+-  if (this.sign && !num.sign) {
+-    this.sign = false;
+-    var r = this.isub(num);
+-    this.sign = !this.sign;
+-    return this._normSign();
+-
+-  // positive + negative
+-  } else if (!this.sign && num.sign) {
+-    num.sign = false;
+-    var r = this.isub(num);
+-    num.sign = true;
+-    return r._normSign();
+-  }
+-
+-  // a.length > b.length
+-  var a;
+-  var b;
+-  if (this.length > num.length) {
+-    a = this;
+-    b = num;
+-  } else {
+-    a = num;
+-    b = this;
++function removePair(list, j, k) {
++  for(var i=1, n=list.length; i<n; i+=2) {
++    if(list[i-1] === j && list[i] === k) {
++      list[i-1] = list[n-2]
++      list[i] = list[n-1]
++      list.length = n - 2
++      return
++    }
+   }
++}
+ 
+-  var carry = 0;
+-  for (var i = 0; i < b.length; i++) {
+-    var r = a.words[i] + b.words[i] + carry;
+-    this.words[i] = r & 0x3ffffff;
+-    carry = r >>> 26;
++proto.isConstraint = (function() {
++  var e = [0,0]
++  function compareLex(a, b) {
++    return a[0] - b[0] || a[1] - b[1]
+   }
+-  for (; carry !== 0 && i < a.length; i++) {
+-    var r = a.words[i] + carry;
+-    this.words[i] = r & 0x3ffffff;
+-    carry = r >>> 26;
++  return function(i, j) {
++    e[0] = Math.min(i,j)
++    e[1] = Math.max(i,j)
++    return bsearch.eq(this.edges, e, compareLex) >= 0
+   }
++})()
+ 
+-  this.length = a.length;
+-  if (carry !== 0) {
+-    this.words[this.length] = carry;
+-    this.length++;
+-  // Copy the rest of the words
+-  } else if (a !== this) {
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
+-  }
++proto.removeTriangle = function(i, j, k) {
++  var stars = this.stars
++  removePair(stars[i], j, k)
++  removePair(stars[j], k, i)
++  removePair(stars[k], i, j)
++}
+ 
+-  return this;
+-};
++proto.addTriangle = function(i, j, k) {
++  var stars = this.stars
++  stars[i].push(j, k)
++  stars[j].push(k, i)
++  stars[k].push(i, j)
++}
+ 
+-// Add `num` to `this`
+-BN.prototype.add = function add(num) {
+-  if (num.sign && !this.sign) {
+-    num.sign = false;
+-    var res = this.sub(num);
+-    num.sign = true;
+-    return res;
+-  } else if (!num.sign && this.sign) {
+-    this.sign = false;
+-    var res = num.sub(this);
+-    this.sign = true;
+-    return res;
++proto.opposite = function(j, i) {
++  var list = this.stars[i]
++  for(var k=1, n=list.length; k<n; k+=2) {
++    if(list[k] === j) {
++      return list[k-1]
++    }
+   }
++  return -1
++}
+ 
+-  if (this.length > num.length)
+-    return this.clone().iadd(num);
+-  else
+-    return num.clone().iadd(this);
+-};
+-
+-// Subtract `num` from `this` in-place
+-BN.prototype.isub = function isub(num) {
+-  // this - (-num) = this + num
+-  if (num.sign) {
+-    num.sign = false;
+-    var r = this.iadd(num);
+-    num.sign = true;
+-    return r._normSign();
++proto.flip = function(i, j) {
++  var a = this.opposite(i, j)
++  var b = this.opposite(j, i)
++  this.removeTriangle(i, j, a)
++  this.removeTriangle(j, i, b)
++  this.addTriangle(i, b, a)
++  this.addTriangle(j, a, b)
++}
+ 
+-  // -this - num = -(this + num)
+-  } else if (this.sign) {
+-    this.sign = false;
+-    this.iadd(num);
+-    this.sign = true;
+-    return this._normSign();
++proto.edges = function() {
++  var stars = this.stars
++  var result = []
++  for(var i=0, n=stars.length; i<n; ++i) {
++    var list = stars[i]
++    for(var j=0, m=list.length; j<m; j+=2) {
++      result.push([list[j], list[j+1]])
++    }
+   }
++  return result
++}
+ 
+-  // At this point both numbers are positive
+-  var cmp = this.cmp(num);
++proto.cells = function() {
++  var stars = this.stars
++  var result = []
++  for(var i=0, n=stars.length; i<n; ++i) {
++    var list = stars[i]
++    for(var j=0, m=list.length; j<m; j+=2) {
++      var s = list[j]
++      var t = list[j+1]
++      if(i < Math.min(s, t)) {
++        result.push([i, s, t])
++      }
++    }
++  }
++  return result
++}
+ 
+-  // Optimization - zeroify
+-  if (cmp === 0) {
+-    this.sign = false;
+-    this.length = 1;
+-    this.words[0] = 0;
+-    return this;
++function createTriangulation(numVerts, edges) {
++  var stars = new Array(numVerts)
++  for(var i=0; i<numVerts; ++i) {
++    stars[i] = []
+   }
++  return new Triangulation(stars, edges)
++}
+ 
+-  // a > b
+-  var a;
+-  var b;
+-  if (cmp > 0) {
+-    a = this;
+-    b = num;
++},{"binary-search-bounds":67}],67:[function(require,module,exports){
++"use strict"
++
++function compileSearch(funcName, predicate, reversed, extraArgs, earlyOut) {
++  var code = [
++    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
++earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
++";while(l<=h){\
++var m=(l+h)>>>1,x=a[m]"]
++  if(earlyOut) {
++    if(predicate.indexOf("c") < 0) {
++      code.push(";if(x===y){return m}else if(x<=y){")
++    } else {
++      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
++    }
+   } else {
+-    a = num;
+-    b = this;
++    code.push(";if(", predicate, "){i=m;")
+   }
+-
+-  var carry = 0;
+-  for (var i = 0; i < b.length; i++) {
+-    var r = a.words[i] - b.words[i] + carry;
+-    carry = r >> 26;
+-    this.words[i] = r & 0x3ffffff;
++  if(reversed) {
++    code.push("l=m+1}else{h=m-1}")
++  } else {
++    code.push("h=m-1}else{l=m+1}")
+   }
+-  for (; carry !== 0 && i < a.length; i++) {
+-    var r = a.words[i] + carry;
+-    carry = r >> 26;
+-    this.words[i] = r & 0x3ffffff;
++  code.push("}")
++  if(earlyOut) {
++    code.push("return -1};")
++  } else {
++    code.push("return i};")
+   }
++  return code.join("")
++}
+ 
+-  // Copy rest of the words
+-  if (carry === 0 && i < a.length && a !== this)
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
+-  this.length = Math.max(this.length, i);
+-
+-  if (a !== this)
+-    this.sign = true;
+-
+-  return this.strip();
+-};
++function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
++  var result = new Function([
++  compileSearch("A", "x" + predicate + "y", reversed, ["y"], earlyOut),
++  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], earlyOut),
++"function dispatchBsearch", suffix, "(a,y,c,l,h){\
++if(typeof(c)==='function'){\
++return P(a,(l===void 0)?0:l|0,(h===void 0)?a.length-1:h|0,y,c)\
++}else{\
++return A(a,(c===void 0)?0:c|0,(l===void 0)?a.length-1:l|0,y)\
++}}\
++return dispatchBsearch", suffix].join(""))
++  return result()
++}
+ 
+-// Subtract `num` from `this`
+-BN.prototype.sub = function sub(num) {
+-  return this.clone().isub(num);
+-};
++module.exports = {
++  ge: compileBoundsSearch(">=", false, "GE"),
++  gt: compileBoundsSearch(">", false, "GT"),
++  lt: compileBoundsSearch("<", true, "LT"),
++  le: compileBoundsSearch("<=", true, "LE"),
++  eq: compileBoundsSearch("-", true, "EQ", true)
++}
+ 
+-/*
+-// NOTE: This could be potentionally used to generate loop-less multiplications
+-function _genCombMulTo(alen, blen) {
+-  var len = alen + blen - 1;
+-  var src = [
+-    'var a = this.words, b = num.words, o = out.words, c = 0, w, ' +
+-        'mask = 0x3ffffff, shift = 0x4000000;',
+-    'out.length = ' + len + ';'
+-  ];
+-  for (var k = 0; k < len; k++) {
+-    var minJ = Math.max(0, k - alen + 1);
+-    var maxJ = Math.min(k, blen - 1);
++},{}],68:[function(require,module,exports){
++'use strict'
+ 
+-    for (var j = minJ; j <= maxJ; j++) {
+-      var i = k - j;
+-      var mul = 'a[' + i + '] * b[' + j + ']';
++module.exports = orientation
+ 
+-      if (j === minJ) {
+-        src.push('w = ' + mul + ' + c;');
+-        src.push('c = (w / shift) | 0;');
+-      } else {
+-        src.push('w += ' + mul + ';');
+-        src.push('c += (w / shift) | 0;');
++function orientation(s) {
++  var p = 1
++  for(var i=1; i<s.length; ++i) {
++    for(var j=0; j<i; ++j) {
++      if(s[i] < s[j]) {
++        p = -p
++      } else if(s[j] === s[i]) {
++        return 0
+       }
+-      src.push('w &= mask;');
+     }
+-    src.push('o[' + k + '] = w;');
+   }
+-  src.push('if (c !== 0) {',
+-           '  o[' + k + '] = c;',
+-           '  out.length++;',
+-           '}',
+-           'return out;');
+-
+-  return src.join('\n');
++  return p
+ }
+-*/
+ 
+-BN.prototype._smallMulTo = function _smallMulTo(num, out) {
+-  out.sign = num.sign !== this.sign;
+-  out.length = this.length + num.length;
++},{}],69:[function(require,module,exports){
++"use strict"
+ 
+-  var carry = 0;
+-  for (var k = 0; k < out.length - 1; k++) {
+-    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
+-    // note that ncarry could be >= 0x3ffffff
+-    var ncarry = carry >>> 26;
+-    var rword = carry & 0x3ffffff;
+-    var maxJ = Math.min(k, num.length - 1);
+-    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i] | 0;
+-      var b = num.words[j] | 0;
+-      var r = a * b;
++var dup = require("dup")
++var solve = require("robust-linear-solve")
+ 
+-      var lo = r & 0x3ffffff;
+-      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
+-      lo = (lo + rword) | 0;
+-      rword = lo & 0x3ffffff;
+-      ncarry = (ncarry + (lo >>> 26)) | 0;
+-    }
+-    out.words[k] = rword;
+-    carry = ncarry;
+-  }
+-  if (carry !== 0) {
+-    out.words[k] = carry;
+-  } else {
+-    out.length--;
++function dot(a, b) {
++  var s = 0.0
++  var d = a.length
++  for(var i=0; i<d; ++i) {
++    s += a[i] * b[i]
+   }
++  return s
++}
+ 
+-  return out.strip();
+-};
++function barycentricCircumcenter(points) {
++  var N = points.length
++  if(N === 0) {
++    return []
++  }
++  
++  var D = points[0].length
++  var A = dup([points.length+1, points.length+1], 1.0)
++  var b = dup([points.length+1], 1.0)
++  A[N][N] = 0.0
++  for(var i=0; i<N; ++i) {
++    for(var j=0; j<=i; ++j) {
++      A[j][i] = A[i][j] = 2.0 * dot(points[i], points[j])
++    }
++    b[i] = dot(points[i], points[i])
++  }
++  var x = solve(A, b)
+ 
+-BN.prototype._bigMulTo = function _bigMulTo(num, out) {
+-  out.sign = num.sign !== this.sign;
+-  out.length = this.length + num.length;
++  var denom = 0.0
++  var h = x[N+1]
++  for(var i=0; i<h.length; ++i) {
++    denom += h[i]
++  }
+ 
+-  var carry = 0;
+-  var hncarry = 0;
+-  for (var k = 0; k < out.length - 1; k++) {
+-    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
+-    // note that ncarry could be >= 0x3ffffff
+-    var ncarry = hncarry;
+-    hncarry = 0;
+-    var rword = carry & 0x3ffffff;
+-    var maxJ = Math.min(k, num.length - 1);
+-    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i] | 0;
+-      var b = num.words[j] | 0;
+-      var r = a * b;
++  var y = new Array(N)
++  for(var i=0; i<N; ++i) {
++    var h = x[i]
++    var numer = 0.0
++    for(var j=0; j<h.length; ++j) {
++      numer += h[j]
++    }
++    y[i] =  numer / denom
++  }
+ 
+-      var lo = r & 0x3ffffff;
+-      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
+-      lo = (lo + rword) | 0;
+-      rword = lo & 0x3ffffff;
+-      ncarry = (ncarry + (lo >>> 26)) | 0;
++  return y
++}
+ 
+-      hncarry += ncarry >>> 26;
+-      ncarry &= 0x3ffffff;
+-    }
+-    out.words[k] = rword;
+-    carry = ncarry;
+-    ncarry = hncarry;
++function circumcenter(points) {
++  if(points.length === 0) {
++    return []
+   }
+-  if (carry !== 0) {
+-    out.words[k] = carry;
+-  } else {
+-    out.length--;
++  var D = points[0].length
++  var result = dup([D])
++  var weights = barycentricCircumcenter(points)
++  for(var i=0; i<points.length; ++i) {
++    for(var j=0; j<D; ++j) {
++      result[j] += points[i][j] * weights[i]
++    }
+   }
++  return result
++}
+ 
+-  return out.strip();
+-};
+-
+-BN.prototype.mulTo = function mulTo(num, out) {
+-  var res;
+-  if (this.length + num.length < 63)
+-    res = this._smallMulTo(num, out);
+-  else
+-    res = this._bigMulTo(num, out);
+-  return res;
+-};
++circumcenter.barycenetric = barycentricCircumcenter
++module.exports = circumcenter
++},{"dup":93,"robust-linear-solve":417}],70:[function(require,module,exports){
++module.exports = circumradius
+ 
+-// Multiply `this` by `num`
+-BN.prototype.mul = function mul(num) {
+-  var out = new BN(null);
+-  out.words = new Array(this.length + num.length);
+-  return this.mulTo(num, out);
+-};
++var circumcenter = require('circumcenter')
+ 
+-// In-place Multiplication
+-BN.prototype.imul = function imul(num) {
+-  if (this.cmpn(0) === 0 || num.cmpn(0) === 0) {
+-    this.words[0] = 0;
+-    this.length = 1;
+-    return this;
++function circumradius(points) {
++  var center = circumcenter(points)
++  var avgDist = 0.0
++  for(var i=0; i<points.length; ++i) {
++    var p = points[i]
++    for(var j=0; j<center.length; ++j) {
++      avgDist += Math.pow(p[j] - center[j], 2)
++    }
+   }
++  return Math.sqrt(avgDist / points.length)
++}
++},{"circumcenter":69}],71:[function(require,module,exports){
++'use strict'
+ 
+-  var tlen = this.length;
+-  var nlen = num.length;
++module.exports = cleanPSLG
+ 
+-  this.sign = num.sign !== this.sign;
+-  this.length = this.length + num.length;
+-  this.words[this.length - 1] = 0;
++var UnionFind = require('union-find')
++var boxIntersect = require('box-intersect')
++var compareCell = require('compare-cell')
++var segseg = require('robust-segment-intersect')
++var rat = require('big-rat')
++var ratCmp = require('big-rat/cmp')
++var ratToFloat = require('big-rat/to-float')
++var ratVec = require('rat-vec')
++var nextafter = require('nextafter')
+ 
+-  for (var k = this.length - 2; k >= 0; k--) {
+-    // Sum all words with the same `i + j = k` and accumulate `carry`,
+-    // note that carry could be >= 0x3ffffff
+-    var carry = 0;
+-    var rword = 0;
+-    var maxJ = Math.min(k, nlen - 1);
+-    for (var j = Math.max(0, k - tlen + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i];
+-      var b = num.words[j];
+-      var r = a * b;
++var solveIntersection = require('./lib/rat-seg-intersect')
+ 
+-      var lo = r & 0x3ffffff;
+-      carry += (r / 0x4000000) | 0;
+-      lo += rword;
+-      rword = lo & 0x3ffffff;
+-      carry += lo >>> 26;
+-    }
+-    this.words[k] = rword;
+-    this.words[k + 1] += carry;
+-    carry = 0;
++//Bounds on a rational number when rounded to a float
++function boundRat(r) {
++  var f = ratToFloat(r)
++  var cmp = ratCmp(rat(f), r)
++  if(cmp < 0) {
++    return [f, nextafter(f, Infinity)]
++  } else if(cmp > 0) {
++    return [nextafter(f, -Infinity), f]
++  } else {
++    return [f, f]
+   }
++}
+ 
+-  // Propagate overflows
+-  var carry = 0;
+-  for (var i = 1; i < this.length; i++) {
+-    var w = this.words[i] + carry;
+-    this.words[i] = w & 0x3ffffff;
+-    carry = w >>> 26;
++//Convert a list of edges in a pslg to bounding boxes
++function boundEdges(points, edges) {
++  var bounds = new Array(edges.length)
++  for(var i=0; i<edges.length; ++i) {
++    var e = edges[i]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    bounds[i] = [
++      Math.min(a[0], b[0]),
++      Math.min(a[1], b[1]),
++      Math.max(a[0], b[0]),
++      Math.max(a[1], b[1]) ]
+   }
++  return bounds
++}
+ 
+-  return this.strip();
+-};
++//Convert a list of points into bounding boxes by duplicating coords
++function boundPoints(points) {
++  var bounds = new Array(points.length)
++  for(var i=0; i<points.length; ++i) {
++    var p = points[i]
++    bounds[i] = [ p[0], p[1], p[0], p[1] ]
++  }
++  return bounds
++}
+ 
+-BN.prototype.imuln = function imuln(num) {
+-  assert(typeof num === 'number');
++//Find all pairs of crossing edges in a pslg (given edge bounds)
++function getCrossings(points, edges, edgeBounds) {
++  var result = []
++  boxIntersect(edgeBounds, function(i, j) {
++    var e = edges[i]
++    var f = edges[j]
++    if(e[0] === f[0] || e[0] === f[1] ||
++       e[1] === f[0] || e[1] === f[1]) {
++         return
++    }
++    var a = points[e[0]]
++    var b = points[e[1]]
++    var c = points[f[0]]
++    var d = points[f[1]]
++    if(segseg(a, b, c, d)) {
++      result.push([i, j])
++    }
++  })
++  return result
++}
+ 
+-  // Carry
+-  var carry = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var w = this.words[i] * num;
+-    var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
+-    carry >>= 26;
+-    carry += (w / 0x4000000) | 0;
+-    // NOTE: lo is 27bit maximum
+-    carry += lo >>> 26;
+-    this.words[i] = lo & 0x3ffffff;
+-  }
++//Find all pairs of crossing vertices in a pslg (given edge/vert bounds)
++function getTJunctions(points, edges, edgeBounds, vertBounds) {
++  var result = []
++  boxIntersect(edgeBounds, vertBounds, function(i, v) {
++    var e = edges[i]
++    if(e[0] === v || e[1] === v) {
++      return
++    }
++    var p = points[v]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    if(segseg(a, b, p, p)) {
++      result.push([i, v])
++    }
++  })
++  return result
++}
+ 
+-  if (carry !== 0) {
+-    this.words[i] = carry;
+-    this.length++;
++
++//Cut edges along crossings/tjunctions
++function cutEdges(floatPoints, edges, crossings, junctions, useColor) {
++
++  //Convert crossings into tjunctions by constructing rational points
++  var ratPoints = []
++  for(var i=0; i<crossings.length; ++i) {
++    var crossing = crossings[i]
++    var e = crossing[0]
++    var f = crossing[1]
++    var ee = edges[e]
++    var ef = edges[f]
++    var x = solveIntersection(
++      ratVec(floatPoints[ee[0]]),
++      ratVec(floatPoints[ee[1]]),
++      ratVec(floatPoints[ef[0]]),
++      ratVec(floatPoints[ef[1]]))
++    if(!x) {
++      //Segments are parallel, should already be handled by t-junctions
++      continue
++    }
++    var idx = ratPoints.length + floatPoints.length
++    ratPoints.push(x)
++    junctions.push([e, idx], [f, idx])
+   }
+ 
+-  return this;
+-};
++  //Sort tjunctions
++  function getPoint(idx) {
++    if(idx >= floatPoints.length) {
++      return ratPoints[idx-floatPoints.length]
++    }
++    var p = floatPoints[idx]
++    return [ rat(p[0]), rat(p[1]) ]
++  }
++  junctions.sort(function(a, b) {
++    if(a[0] !== b[0]) {
++      return a[0] - b[0]
++    }
++    var u = getPoint(a[1])
++    var v = getPoint(b[1])
++    return ratCmp(u[0], v[0]) || ratCmp(u[1], v[1])
++  })
+ 
+-BN.prototype.muln = function muln(num) {
+-  return this.clone().imuln(num);
+-};
++  //Split edges along junctions
++  for(var i=junctions.length-1; i>=0; --i) {
++    var junction = junctions[i]
++    var e = junction[0]
+ 
+-// `this` * `this`
+-BN.prototype.sqr = function sqr() {
+-  return this.mul(this);
+-};
++    var edge = edges[e]
++    var s = edge[0]
++    var t = edge[1]
+ 
+-// `this` * `this` in-place
+-BN.prototype.isqr = function isqr() {
+-  return this.mul(this);
+-};
++    //Check if edge is not lexicographically sorted
++    var a = floatPoints[s]
++    var b = floatPoints[t]
++    if(((a[0] - b[0]) || (a[1] - b[1])) < 0) {
++      var tmp = s
++      s = t
++      t = tmp
++    }
+ 
+-// Shift-left in-place
+-BN.prototype.ishln = function ishln(bits) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var r = bits % 26;
+-  var s = (bits - r) / 26;
+-  var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
++    //Split leading edge
++    edge[0] = s
++    var last = edge[1] = junction[1]
+ 
+-  if (r !== 0) {
+-    var carry = 0;
+-    for (var i = 0; i < this.length; i++) {
+-      var newCarry = this.words[i] & carryMask;
+-      var c = (this.words[i] - newCarry) << r;
+-      this.words[i] = c | carry;
+-      carry = newCarry >>> (26 - r);
++    //If we are grouping edges by color, remember to track data
++    var color
++    if(useColor) {
++      color = edge[2]
+     }
+-    if (carry) {
+-      this.words[i] = carry;
+-      this.length++;
++
++    //Split other edges
++    while(i > 0 && junctions[i-1][0] === e) {
++      var junction = junctions[--i]
++      var next = junction[1]
++      if(useColor) {
++        edges.push([last, next, color])
++      } else {
++        edges.push([last, next])
++      }
++      last = next
+     }
+-  }
+ 
+-  if (s !== 0) {
+-    for (var i = this.length - 1; i >= 0; i--)
+-      this.words[i + s] = this.words[i];
+-    for (var i = 0; i < s; i++)
+-      this.words[i] = 0;
+-    this.length += s;
++    //Add final edge
++    if(useColor) {
++      edges.push([last, t, color])
++    } else {
++      edges.push([last, t])
++    }
+   }
+ 
+-  return this.strip();
+-};
++  //Return constructed rational points
++  return ratPoints
++}
+ 
+-// Shift-right in-place
+-// NOTE: `hint` is a lowest bit before trailing zeroes
+-// NOTE: if `extended` is present - it will be filled with destroyed bits
+-BN.prototype.ishrn = function ishrn(bits, hint, extended) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var h;
+-  if (hint)
+-    h = (hint - (hint % 26)) / 26;
+-  else
+-    h = 0;
++//Merge overlapping points
++function dedupPoints(floatPoints, ratPoints, floatBounds) {
++  var numPoints = floatPoints.length + ratPoints.length
++  var uf        = new UnionFind(numPoints)
+ 
+-  var r = bits % 26;
+-  var s = Math.min((bits - r) / 26, this.length);
+-  var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
+-  var maskedWords = extended;
++  //Compute rational bounds
++  var bounds = floatBounds
++  for(var i=0; i<ratPoints.length; ++i) {
++    var p = ratPoints[i]
++    var xb = boundRat(p[0])
++    var yb = boundRat(p[1])
++    bounds.push([ xb[0], yb[0], xb[1], yb[1] ])
++    floatPoints.push([ ratToFloat(p[0]), ratToFloat(p[1]) ])
++  }
+ 
+-  h -= s;
+-  h = Math.max(0, h);
++  //Link all points with over lapping boxes
++  boxIntersect(bounds, function(i, j) {
++    uf.link(i, j)
++  })
+ 
+-  // Extended mode, copy masked part
+-  if (maskedWords) {
+-    for (var i = 0; i < s; i++)
+-      maskedWords.words[i] = this.words[i];
+-    maskedWords.length = s;
++  //Call find on each point to get a relabeling
++  var ptr = 0
++  var noDupes = true
++  var labels = new Array(numPoints)
++  for(var i=0; i<numPoints; ++i) {
++    var j = uf.find(i)
++    if(j === i) {
++      //If not a duplicate, then don't bother
++      labels[i] = ptr
++      floatPoints[ptr++] = floatPoints[i]
++    } else {
++      //Clear no-dupes flag, zero out label
++      noDupes = false
++      labels[i] = -1
++    }
+   }
++  floatPoints.length = ptr
+ 
+-  if (s === 0) {
+-    // No-op, we should not move anything at all
+-  } else if (this.length > s) {
+-    this.length -= s;
+-    for (var i = 0; i < this.length; i++)
+-      this.words[i] = this.words[i + s];
+-  } else {
+-    this.words[0] = 0;
+-    this.length = 1;
++  //If no duplicates, return null to signal termination
++  if(noDupes) {
++    return null
+   }
+ 
+-  var carry = 0;
+-  for (var i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
+-    var word = this.words[i];
+-    this.words[i] = (carry << (26 - r)) | (word >>> r);
+-    carry = word & mask;
++  //Do a second pass to fix up missing labels
++  for(var i=0; i<numPoints; ++i) {
++    if(labels[i] < 0) {
++      labels[i] = labels[uf.find(i)]
++    }
+   }
+ 
+-  // Push carried bits as a mask
+-  if (maskedWords && carry !== 0)
+-    maskedWords.words[maskedWords.length++] = carry;
++  //Return resulting union-find data structure
++  return labels
++}
+ 
+-  if (this.length === 0) {
+-    this.words[0] = 0;
+-    this.length = 1;
++function compareLex2(a,b) { return (a[0]-b[0]) || (a[1]-b[1]) }
++function compareLex3(a,b) {
++  var d = (a[0] - b[0]) || (a[1] - b[1])
++  if(d) {
++    return d
+   }
++  if(a[2] < b[2]) {
++    return -1
++  } else if(a[2] > b[2]) {
++    return 1
++  }
++  return 0
++}
+ 
+-  this.strip();
+-
+-  return this;
+-};
++//Remove duplicate edge labels
++function dedupEdges(edges, labels, useColor) {
++  if(edges.length === 0) {
++    return
++  }
++  if(labels) {
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      var a = labels[e[0]]
++      var b = labels[e[1]]
++      e[0] = Math.min(a, b)
++      e[1] = Math.max(a, b)
++    }
++  } else {
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      var a = e[0]
++      var b = e[1]
++      e[0] = Math.min(a, b)
++      e[1] = Math.max(a, b)
++    }
++  }
++  if(useColor) {
++    edges.sort(compareLex3)
++  } else {
++    edges.sort(compareLex2)
++  }
++  var ptr = 1
++  for(var i=1; i<edges.length; ++i) {
++    var prev = edges[i-1]
++    var next = edges[i]
++    if(next[0] === prev[0] && next[1] === prev[1] &&
++      (!useColor || next[2] === prev[2])) {
++      continue
++    }
++    edges[ptr++] = next
++  }
++  edges.length = ptr
++}
+ 
+-// Shift-left
+-BN.prototype.shln = function shln(bits) {
+-  return this.clone().ishln(bits);
+-};
++//Repeat until convergence
++function snapRound(points, edges, useColor) {
+ 
+-// Shift-right
+-BN.prototype.shrn = function shrn(bits) {
+-  return this.clone().ishrn(bits);
+-};
++  // 1. find edge crossings
++  var edgeBounds = boundEdges(points, edges)
++  var crossings  = getCrossings(points, edges, edgeBounds)
+ 
+-// Test if n bit is set
+-BN.prototype.testn = function testn(bit) {
+-  assert(typeof bit === 'number' && bit >= 0);
+-  var r = bit % 26;
+-  var s = (bit - r) / 26;
+-  var q = 1 << r;
++  // 2. find t-junctions
++  var vertBounds = boundPoints(points)
++  var tjunctions = getTJunctions(points, edges, edgeBounds, vertBounds)
+ 
+-  // Fast case: bit is much higher than all existing words
+-  if (this.length <= s) {
+-    return false;
+-  }
++  // 3. cut edges, construct rational points
++  var ratPoints  = cutEdges(points, edges, crossings, tjunctions, useColor)
+ 
+-  // Check bit and return
+-  var w = this.words[s];
++  // 4. dedupe verts
++  var labels     = dedupPoints(points, ratPoints, vertBounds)
+ 
+-  return !!(w & q);
+-};
++  // 6. dedupe edges
++  dedupEdges(edges, labels, useColor)
+ 
+-// Return only lowers bits of number (in-place)
+-BN.prototype.imaskn = function imaskn(bits) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var r = bits % 26;
+-  var s = (bits - r) / 26;
++  // 5. check termination
++  if(!labels) {
++    return (crossings.length > 0 || tjunctions.length > 0)
++  }
+ 
+-  assert(!this.sign, 'imaskn works only with positive numbers');
++  // More iterations necessary
++  return true
++}
+ 
+-  if (r !== 0)
+-    s++;
+-  this.length = Math.min(s, this.length);
++//Main loop, runs PSLG clean up until completion
++function cleanPSLG(points, edges, colors) {
++  var modified = false
+ 
+-  if (r !== 0) {
+-    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
+-    this.words[this.length - 1] &= mask;
++  //If using colors, augment edges with color data
++  var prevEdges
++  if(colors) {
++    prevEdges = edges
++    var augEdges = new Array(edges.length)
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      augEdges[i] = [e[0], e[1], colors[i]]
++    }
++    edges = augEdges
+   }
+ 
+-  return this.strip();
+-};
+-
+-// Return only lowers bits of number
+-BN.prototype.maskn = function maskn(bits) {
+-  return this.clone().imaskn(bits);
+-};
+-
+-// Add plain number `num` to `this`
+-BN.prototype.iaddn = function iaddn(num) {
+-  assert(typeof num === 'number');
+-  if (num < 0)
+-    return this.isubn(-num);
++  //Run snap rounding until convergence
++  while(snapRound(points, edges, !!colors)) {
++    modified = true
++  }
+ 
+-  // Possible sign change
+-  if (this.sign) {
+-    if (this.length === 1 && this.words[0] < num) {
+-      this.words[0] = num - this.words[0];
+-      this.sign = false;
+-      return this;
++  //Strip color tags
++  if(!!colors && modified) {
++    prevEdges.length = 0
++    colors.length = 0
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      prevEdges.push([e[0], e[1]])
++      colors.push(e[2])
+     }
+-
+-    this.sign = false;
+-    this.isubn(num);
+-    this.sign = true;
+-    return this;
+   }
+ 
+-  // Add without checks
+-  return this._iaddn(num);
+-};
++  return modified
++}
+ 
+-BN.prototype._iaddn = function _iaddn(num) {
+-  this.words[0] += num;
++},{"./lib/rat-seg-intersect":72,"big-rat":35,"big-rat/cmp":33,"big-rat/to-float":47,"box-intersect":52,"compare-cell":77,"nextafter":386,"rat-vec":406,"robust-segment-intersect":421,"union-find":450}],72:[function(require,module,exports){
++'use strict'
+ 
+-  // Carry
+-  for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
+-    this.words[i] -= 0x4000000;
+-    if (i === this.length - 1)
+-      this.words[i + 1] = 1;
+-    else
+-      this.words[i + 1]++;
+-  }
+-  this.length = Math.max(this.length, i + 1);
++//TODO: Move this to a separate module
+ 
+-  return this;
+-};
++module.exports = solveIntersection
+ 
+-// Subtract plain number `num` from `this`
+-BN.prototype.isubn = function isubn(num) {
+-  assert(typeof num === 'number');
+-  if (num < 0)
+-    return this.iaddn(-num);
++var ratMul = require('big-rat/mul')
++var ratDiv = require('big-rat/div')
++var ratSub = require('big-rat/sub')
++var ratSign = require('big-rat/sign')
++var rvSub = require('rat-vec/sub')
++var rvAdd = require('rat-vec/add')
++var rvMuls = require('rat-vec/muls')
+ 
+-  if (this.sign) {
+-    this.sign = false;
+-    this.iaddn(num);
+-    this.sign = true;
+-    return this;
+-  }
++var toFloat = require('big-rat/to-float')
+ 
+-  this.words[0] -= num;
++function ratPerp(a, b) {
++  return ratSub(ratMul(a[0], b[1]), ratMul(a[1], b[0]))
++}
+ 
+-  // Carry
+-  for (var i = 0; i < this.length && this.words[i] < 0; i++) {
+-    this.words[i] += 0x4000000;
+-    this.words[i + 1] -= 1;
+-  }
++//Solve for intersection
++//  x = a + t (b-a)
++//  (x - c) ^ (d-c) = 0
++//  (t * (b-a) + (a-c) ) ^ (d-c) = 0
++//  t * (b-a)^(d-c) = (d-c)^(a-c)
++//  t = (d-c)^(a-c) / (b-a)^(d-c)
+ 
+-  return this.strip();
+-};
++function solveIntersection(a, b, c, d) {
++  var ba = rvSub(b, a)
++  var dc = rvSub(d, c)
+ 
+-BN.prototype.addn = function addn(num) {
+-  return this.clone().iaddn(num);
+-};
++  var baXdc = ratPerp(ba, dc)
+ 
+-BN.prototype.subn = function subn(num) {
+-  return this.clone().isubn(num);
+-};
++  if(ratSign(baXdc) === 0) {
++    return null
++  }
+ 
+-BN.prototype.iabs = function iabs() {
+-  this.sign = false;
++  var ac = rvSub(a, c)
++  var dcXac = ratPerp(dc, ac)
+ 
+-  return this;
+-};
++  var t = ratDiv(dcXac, baXdc)
+ 
+-BN.prototype.abs = function abs() {
+-  return this.clone().iabs();
+-};
++  return rvAdd(a, rvMuls(ba, t))
++}
+ 
+-BN.prototype._ishlnsubmul = function _ishlnsubmul(num, mul, shift) {
+-  // Bigger storage is needed
+-  var len = num.length + shift;
+-  var i;
+-  if (this.words.length < len) {
+-    var t = new Array(len);
+-    for (var i = 0; i < this.length; i++)
+-      t[i] = this.words[i];
+-    this.words = t;
+-  } else {
+-    i = this.length;
+-  }
+-
+-  // Zeroify rest
+-  this.length = Math.max(this.length, len);
+-  for (; i < this.length; i++)
+-    this.words[i] = 0;
++},{"big-rat/div":34,"big-rat/mul":44,"big-rat/sign":45,"big-rat/sub":46,"big-rat/to-float":47,"rat-vec/add":405,"rat-vec/muls":407,"rat-vec/sub":408}],73:[function(require,module,exports){
++(function (Buffer){
++var clone = (function() {
++'use strict';
+ 
+-  var carry = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var w = this.words[i + shift] + carry;
+-    var right = num.words[i] * mul;
+-    w -= right & 0x3ffffff;
+-    carry = (w >> 26) - ((right / 0x4000000) | 0);
+-    this.words[i + shift] = w & 0x3ffffff;
+-  }
+-  for (; i < this.length - shift; i++) {
+-    var w = this.words[i + shift] + carry;
+-    carry = w >> 26;
+-    this.words[i + shift] = w & 0x3ffffff;
++/**
++ * Clones (copies) an Object using deep copying.
++ *
++ * This function supports circular references by default, but if you are certain
++ * there are no circular references in your object, you can save some CPU time
++ * by calling clone(obj, false).
++ *
++ * Caution: if `circular` is false and `parent` contains circular references,
++ * your program may enter an infinite loop and crash.
++ *
++ * @param `parent` - the object to be cloned
++ * @param `circular` - set to true if the object to be cloned may contain
++ *    circular references. (optional - true by default)
++ * @param `depth` - set to a number if the object is only to be cloned to
++ *    a particular depth. (optional - defaults to Infinity)
++ * @param `prototype` - sets the prototype to be used when cloning an object.
++ *    (optional - defaults to parent prototype).
++*/
++function clone(parent, circular, depth, prototype) {
++  var filter;
++  if (typeof circular === 'object') {
++    depth = circular.depth;
++    prototype = circular.prototype;
++    filter = circular.filter;
++    circular = circular.circular
+   }
++  // maintain two arrays for circular references, where corresponding parents
++  // and children have the same index
++  var allParents = [];
++  var allChildren = [];
+ 
+-  if (carry === 0)
+-    return this.strip();
+-
+-  // Subtraction overflow
+-  assert(carry === -1);
+-  carry = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var w = -this.words[i] + carry;
+-    carry = w >> 26;
+-    this.words[i] = w & 0x3ffffff;
+-  }
+-  this.sign = true;
++  var useBuffer = typeof Buffer != 'undefined';
+ 
+-  return this.strip();
+-};
++  if (typeof circular == 'undefined')
++    circular = true;
+ 
+-BN.prototype._wordDiv = function _wordDiv(num, mode) {
+-  var shift = this.length - num.length;
++  if (typeof depth == 'undefined')
++    depth = Infinity;
+ 
+-  var a = this.clone();
+-  var b = num;
++  // recurse this function so we don't reset allParents and allChildren
++  function _clone(parent, depth) {
++    // cloning null always returns null
++    if (parent === null)
++      return null;
+ 
+-  // Normalize
+-  var bhi = b.words[b.length - 1];
+-  var bhiBits = this._countBits(bhi);
+-  shift = 26 - bhiBits;
+-  if (shift !== 0) {
+-    b = b.shln(shift);
+-    a.ishln(shift);
+-    bhi = b.words[b.length - 1];
+-  }
++    if (depth == 0)
++      return parent;
+ 
+-  // Initialize quotient
+-  var m = a.length - b.length;
+-  var q;
++    var child;
++    var proto;
++    if (typeof parent != 'object') {
++      return parent;
++    }
+ 
+-  if (mode !== 'mod') {
+-    q = new BN(null);
+-    q.length = m + 1;
+-    q.words = new Array(q.length);
+-    for (var i = 0; i < q.length; i++)
+-      q.words[i] = 0;
+-  }
++    if (clone.__isArray(parent)) {
++      child = [];
++    } else if (clone.__isRegExp(parent)) {
++      child = new RegExp(parent.source, __getRegExpFlags(parent));
++      if (parent.lastIndex) child.lastIndex = parent.lastIndex;
++    } else if (clone.__isDate(parent)) {
++      child = new Date(parent.getTime());
++    } else if (useBuffer && Buffer.isBuffer(parent)) {
++      child = new Buffer(parent.length);
++      parent.copy(child);
++      return child;
++    } else {
++      if (typeof prototype == 'undefined') {
++        proto = Object.getPrototypeOf(parent);
++        child = Object.create(proto);
++      }
++      else {
++        child = Object.create(prototype);
++        proto = prototype;
++      }
++    }
+ 
+-  var diff = a.clone()._ishlnsubmul(b, 1, m);
+-  if (!diff.sign) {
+-    a = diff;
+-    if (q)
+-      q.words[m] = 1;
+-  }
++    if (circular) {
++      var index = allParents.indexOf(parent);
+ 
+-  for (var j = m - 1; j >= 0; j--) {
+-    var qj = a.words[b.length + j] * 0x4000000 + a.words[b.length + j - 1];
++      if (index != -1) {
++        return allChildren[index];
++      }
++      allParents.push(parent);
++      allChildren.push(child);
++    }
+ 
+-    // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
+-    // (0x7ffffff)
+-    qj = Math.min((qj / bhi) | 0, 0x3ffffff);
++    for (var i in parent) {
++      var attrs;
++      if (proto) {
++        attrs = Object.getOwnPropertyDescriptor(proto, i);
++      }
+ 
+-    a._ishlnsubmul(b, qj, j);
+-    while (a.sign) {
+-      qj--;
+-      a.sign = false;
+-      a._ishlnsubmul(b, 1, j);
+-      if (a.cmpn(0) !== 0)
+-        a.sign = !a.sign;
++      if (attrs && attrs.set == null) {
++        continue;
++      }
++      child[i] = _clone(parent[i], depth - 1);
+     }
+-    if (q)
+-      q.words[j] = qj;
++
++    return child;
+   }
+-  if (q)
+-    q.strip();
+-  a.strip();
+ 
+-  // Denormalize
+-  if (mode !== 'div' && shift !== 0)
+-    a.ishrn(shift);
+-  return { div: q ? q : null, mod: a };
+-};
++  return _clone(parent, depth);
++}
+ 
+-BN.prototype.divmod = function divmod(num, mode) {
+-  assert(num.cmpn(0) !== 0);
++/**
++ * Simple flat clone using prototype, accepts only objects, usefull for property
++ * override on FLAT configuration object (no nested props).
++ *
++ * USE WITH CAUTION! This may not behave as you wish if you do not know how this
++ * works.
++ */
++clone.clonePrototype = function clonePrototype(parent) {
++  if (parent === null)
++    return null;
+ 
+-  if (this.sign && !num.sign) {
+-    var res = this.neg().divmod(num, mode);
+-    var div;
+-    var mod;
+-    if (mode !== 'mod')
+-      div = res.div.neg();
+-    if (mode !== 'div')
+-      mod = res.mod.cmpn(0) === 0 ? res.mod : num.sub(res.mod);
+-    return {
+-      div: div,
+-      mod: mod
+-    };
+-  } else if (!this.sign && num.sign) {
+-    var res = this.divmod(num.neg(), mode);
+-    var div;
+-    if (mode !== 'mod')
+-      div = res.div.neg();
+-    return { div: div, mod: res.mod };
+-  } else if (this.sign && num.sign) {
+-    return this.neg().divmod(num.neg(), mode);
+-  }
++  var c = function () {};
++  c.prototype = parent;
++  return new c();
++};
+ 
+-  // Both numbers are positive at this point
++// private utility functions
+ 
+-  // Strip both numbers to approximate shift value
+-  if (num.length > this.length || this.cmp(num) < 0)
+-    return { div: new BN(0), mod: this };
++function __objToStr(o) {
++  return Object.prototype.toString.call(o);
++};
++clone.__objToStr = __objToStr;
+ 
+-  // Very short reduction
+-  if (num.length === 1) {
+-    if (mode === 'div')
+-      return { div: this.divn(num.words[0]), mod: null };
+-    else if (mode === 'mod')
+-      return { div: null, mod: new BN(this.modn(num.words[0])) };
+-    return {
+-      div: this.divn(num.words[0]),
+-      mod: new BN(this.modn(num.words[0]))
+-    };
+-  }
++function __isDate(o) {
++  return typeof o === 'object' && __objToStr(o) === '[object Date]';
++};
++clone.__isDate = __isDate;
+ 
+-  return this._wordDiv(num, mode);
++function __isArray(o) {
++  return typeof o === 'object' && __objToStr(o) === '[object Array]';
+ };
++clone.__isArray = __isArray;
+ 
+-// Find `this` / `num`
+-BN.prototype.div = function div(num) {
+-  return this.divmod(num, 'div').div;
++function __isRegExp(o) {
++  return typeof o === 'object' && __objToStr(o) === '[object RegExp]';
+ };
++clone.__isRegExp = __isRegExp;
+ 
+-// Find `this` % `num`
+-BN.prototype.mod = function mod(num) {
+-  return this.divmod(num, 'mod').mod;
++function __getRegExpFlags(re) {
++  var flags = '';
++  if (re.global) flags += 'g';
++  if (re.ignoreCase) flags += 'i';
++  if (re.multiline) flags += 'm';
++  return flags;
+ };
++clone.__getRegExpFlags = __getRegExpFlags;
+ 
+-// Find Round(`this` / `num`)
+-BN.prototype.divRound = function divRound(num) {
+-  var dm = this.divmod(num);
++return clone;
++})();
+ 
+-  // Fast case - exact division
+-  if (dm.mod.cmpn(0) === 0)
+-    return dm.div;
++if (typeof module === 'object' && module.exports) {
++  module.exports = clone;
++}
+ 
+-  var mod = dm.div.sign ? dm.mod.isub(num) : dm.mod;
++}).call(this,require("buffer").Buffer)
++},{"buffer":59}],74:[function(require,module,exports){
++module.exports={
++	"jet":[{"index":0,"rgb":[0,0,131]},{"index":0.125,"rgb":[0,60,170]},{"index":0.375,"rgb":[5,255,255]},{"index":0.625,"rgb":[255,255,0]},{"index":0.875,"rgb":[250,0,0]},{"index":1,"rgb":[128,0,0]}],
+ 
+-  var half = num.shrn(1);
+-  var r2 = num.andln(1);
+-  var cmp = mod.cmp(half);
++	"hsv":[{"index":0,"rgb":[255,0,0]},{"index":0.169,"rgb":[253,255,2]},{"index":0.173,"rgb":[247,255,2]},{"index":0.337,"rgb":[0,252,4]},{"index":0.341,"rgb":[0,252,10]},{"index":0.506,"rgb":[1,249,255]},{"index":0.671,"rgb":[2,0,253]},{"index":0.675,"rgb":[8,0,253]},{"index":0.839,"rgb":[255,0,251]},{"index":0.843,"rgb":[255,0,245]},{"index":1,"rgb":[255,0,6]}],
+ 
+-  // Round down
+-  if (cmp < 0 || r2 === 1 && cmp === 0)
+-    return dm.div;
++	"hot":[{"index":0,"rgb":[0,0,0]},{"index":0.3,"rgb":[230,0,0]},{"index":0.6,"rgb":[255,210,0]},{"index":1,"rgb":[255,255,255]}],
+ 
+-  // Round up
+-  return dm.div.sign ? dm.div.isubn(1) : dm.div.iaddn(1);
+-};
++	"cool":[{"index":0,"rgb":[0,255,255]},{"index":1,"rgb":[255,0,255]}],
+ 
+-BN.prototype.modn = function modn(num) {
+-  assert(num <= 0x3ffffff);
+-  var p = (1 << 26) % num;
++	"spring":[{"index":0,"rgb":[255,0,255]},{"index":1,"rgb":[255,255,0]}],
+ 
+-  var acc = 0;
+-  for (var i = this.length - 1; i >= 0; i--)
+-    acc = (p * acc + this.words[i]) % num;
++	"summer":[{"index":0,"rgb":[0,128,102]},{"index":1,"rgb":[255,255,102]}],
+ 
+-  return acc;
+-};
++	"autumn":[{"index":0,"rgb":[255,0,0]},{"index":1,"rgb":[255,255,0]}],
+ 
+-// In-place division by number
+-BN.prototype.idivn = function idivn(num) {
+-  assert(num <= 0x3ffffff);
++	"winter":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[0,255,128]}],
+ 
+-  var carry = 0;
+-  for (var i = this.length - 1; i >= 0; i--) {
+-    var w = this.words[i] + carry * 0x4000000;
+-    this.words[i] = (w / num) | 0;
+-    carry = w % num;
+-  }
++	"bone":[{"index":0,"rgb":[0,0,0]},{"index":0.376,"rgb":[84,84,116]},{"index":0.753,"rgb":[169,200,200]},{"index":1,"rgb":[255,255,255]}],
+ 
+-  return this.strip();
+-};
++	"copper":[{"index":0,"rgb":[0,0,0]},{"index":0.804,"rgb":[255,160,102]},{"index":1,"rgb":[255,199,127]}],
+ 
+-BN.prototype.divn = function divn(num) {
+-  return this.clone().idivn(num);
+-};
++	"greys":[{"index":0,"rgb":[0,0,0]},{"index":1,"rgb":[255,255,255]}],
+ 
+-BN.prototype.egcd = function egcd(p) {
+-  assert(!p.sign);
+-  assert(p.cmpn(0) !== 0);
++	"yignbu":[{"index":0,"rgb":[8,29,88]},{"index":0.125,"rgb":[37,52,148]},{"index":0.25,"rgb":[34,94,168]},{"index":0.375,"rgb":[29,145,192]},{"index":0.5,"rgb":[65,182,196]},{"index":0.625,"rgb":[127,205,187]},{"index":0.75,"rgb":[199,233,180]},{"index":0.875,"rgb":[237,248,217]},{"index":1,"rgb":[255,255,217]}],
+ 
+-  var x = this;
+-  var y = p.clone();
++	"greens":[{"index":0,"rgb":[0,68,27]},{"index":0.125,"rgb":[0,109,44]},{"index":0.25,"rgb":[35,139,69]},{"index":0.375,"rgb":[65,171,93]},{"index":0.5,"rgb":[116,196,118]},{"index":0.625,"rgb":[161,217,155]},{"index":0.75,"rgb":[199,233,192]},{"index":0.875,"rgb":[229,245,224]},{"index":1,"rgb":[247,252,245]}],
+ 
+-  if (x.sign)
+-    x = x.mod(p);
+-  else
+-    x = x.clone();
++	"yiorrd":[{"index":0,"rgb":[128,0,38]},{"index":0.125,"rgb":[189,0,38]},{"index":0.25,"rgb":[227,26,28]},{"index":0.375,"rgb":[252,78,42]},{"index":0.5,"rgb":[253,141,60]},{"index":0.625,"rgb":[254,178,76]},{"index":0.75,"rgb":[254,217,118]},{"index":0.875,"rgb":[255,237,160]},{"index":1,"rgb":[255,255,204]}],
+ 
+-  // A * x + B * y = x
+-  var A = new BN(1);
+-  var B = new BN(0);
++	"bluered":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[255,0,0]}],
+ 
+-  // C * x + D * y = y
+-  var C = new BN(0);
+-  var D = new BN(1);
++	"rdbu":[{"index":0,"rgb":[5,10,172]},{"index":0.35,"rgb":[106,137,247]},{"index":0.5,"rgb":[190,190,190]},{"index":0.6,"rgb":[220,170,132]},{"index":0.7,"rgb":[230,145,90]},{"index":1,"rgb":[178,10,28]}],
+ 
+-  var g = 0;
++	"picnic":[{"index":0,"rgb":[0,0,255]},{"index":0.1,"rgb":[51,153,255]},{"index":0.2,"rgb":[102,204,255]},{"index":0.3,"rgb":[153,204,255]},{"index":0.4,"rgb":[204,204,255]},{"index":0.5,"rgb":[255,255,255]},{"index":0.6,"rgb":[255,204,255]},{"index":0.7,"rgb":[255,153,255]},{"index":0.8,"rgb":[255,102,204]},{"index":0.9,"rgb":[255,102,102]},{"index":1,"rgb":[255,0,0]}],
+ 
+-  while (x.isEven() && y.isEven()) {
+-    x.ishrn(1);
+-    y.ishrn(1);
+-    ++g;
+-  }
++	"rainbow":[{"index":0,"rgb":[150,0,90]},{"index":0.125,"rgb":[0,0,200]},{"index":0.25,"rgb":[0,25,255]},{"index":0.375,"rgb":[0,152,255]},{"index":0.5,"rgb":[44,255,150]},{"index":0.625,"rgb":[151,255,0]},{"index":0.75,"rgb":[255,234,0]},{"index":0.875,"rgb":[255,111,0]},{"index":1,"rgb":[255,0,0]}],
+ 
+-  var yp = y.clone();
+-  var xp = x.clone();
++	"portland":[{"index":0,"rgb":[12,51,131]},{"index":0.25,"rgb":[10,136,186]},{"index":0.5,"rgb":[242,211,56]},{"index":0.75,"rgb":[242,143,56]},{"index":1,"rgb":[217,30,30]}],
+ 
+-  while (x.cmpn(0) !== 0) {
+-    while (x.isEven()) {
+-      x.ishrn(1);
+-      if (A.isEven() && B.isEven()) {
+-        A.ishrn(1);
+-        B.ishrn(1);
+-      } else {
+-        A.iadd(yp).ishrn(1);
+-        B.isub(xp).ishrn(1);
+-      }
+-    }
++	"blackbody":[{"index":0,"rgb":[0,0,0]},{"index":0.2,"rgb":[230,0,0]},{"index":0.4,"rgb":[230,210,0]},{"index":0.7,"rgb":[255,255,255]},{"index":1,"rgb":[160,200,255]}],
+ 
+-    while (y.isEven()) {
+-      y.ishrn(1);
+-      if (C.isEven() && D.isEven()) {
+-        C.ishrn(1);
+-        D.ishrn(1);
+-      } else {
+-        C.iadd(yp).ishrn(1);
+-        D.isub(xp).ishrn(1);
+-      }
+-    }
++	"earth":[{"index":0,"rgb":[0,0,130]},{"index":0.1,"rgb":[0,180,180]},{"index":0.2,"rgb":[40,210,40]},{"index":0.4,"rgb":[230,230,50]},{"index":0.6,"rgb":[120,70,20]},{"index":1,"rgb":[255,255,255]}],
+ 
+-    if (x.cmp(y) >= 0) {
+-      x.isub(y);
+-      A.isub(C);
+-      B.isub(D);
+-    } else {
+-      y.isub(x);
+-      C.isub(A);
+-      D.isub(B);
+-    }
+-  }
++	"electric":[{"index":0,"rgb":[0,0,0]},{"index":0.15,"rgb":[30,0,100]},{"index":0.4,"rgb":[120,0,100]},{"index":0.6,"rgb":[160,90,0]},{"index":0.8,"rgb":[230,200,0]},{"index":1,"rgb":[255,250,220]}],
+ 
+-  return {
+-    a: C,
+-    b: D,
+-    gcd: y.ishln(g)
+-  };
+-};
++	"alpha": [{"index":0, "rgb": [255,255,255,0]},{"index":0, "rgb": [255,255,255,1]}],
+ 
+-// This is reduced incarnation of the binary EEA
+-// above, designated to invert members of the
+-// _prime_ fields F(p) at a maximal speed
+-BN.prototype._invmp = function _invmp(p) {
+-  assert(!p.sign);
+-  assert(p.cmpn(0) !== 0);
++	"viridis": [{"index":0,"rgb":[68,1,84]},{"index":0.13,"rgb":[71,44,122]},{"index":0.25,"rgb":[59,81,139]},{"index":0.38,"rgb":[44,113,142]},{"index":0.5,"rgb":[33,144,141]},{"index":0.63,"rgb":[39,173,129]},{"index":0.75,"rgb":[92,200,99]},{"index":0.88,"rgb":[170,220,50]},{"index":1,"rgb":[253,231,37]}],
+ 
+-  var a = this;
+-  var b = p.clone();
++	"inferno": [{"index":0,"rgb":[0,0,4]},{"index":0.13,"rgb":[31,12,72]},{"index":0.25,"rgb":[85,15,109]},{"index":0.38,"rgb":[136,34,106]},{"index":0.5,"rgb":[186,54,85]},{"index":0.63,"rgb":[227,89,51]},{"index":0.75,"rgb":[249,140,10]},{"index":0.88,"rgb":[249,201,50]},{"index":1,"rgb":[252,255,164]}],
+ 
+-  if (a.sign)
+-    a = a.mod(p);
+-  else
+-    a = a.clone();
++	"magma": [{"index":0,"rgb":[0,0,4]},{"index":0.13,"rgb":[28,16,68]},{"index":0.25,"rgb":[79,18,123]},{"index":0.38,"rgb":[129,37,129]},{"index":0.5,"rgb":[181,54,122]},{"index":0.63,"rgb":[229,80,100]},{"index":0.75,"rgb":[251,135,97]},{"index":0.88,"rgb":[254,194,135]},{"index":1,"rgb":[252,253,191]}],
+ 
+-  var x1 = new BN(1);
+-  var x2 = new BN(0);
++	"plasma": [{"index":0,"rgb":[13,8,135]},{"index":0.13,"rgb":[75,3,161]},{"index":0.25,"rgb":[125,3,168]},{"index":0.38,"rgb":[168,34,150]},{"index":0.5,"rgb":[203,70,121]},{"index":0.63,"rgb":[229,107,93]},{"index":0.75,"rgb":[248,148,65]},{"index":0.88,"rgb":[253,195,40]},{"index":1,"rgb":[240,249,33]}],
+ 
+-  var delta = b.clone();
++	"warm": [{"index":0,"rgb":[125,0,179]},{"index":0.13,"rgb":[172,0,187]},{"index":0.25,"rgb":[219,0,170]},{"index":0.38,"rgb":[255,0,130]},{"index":0.5,"rgb":[255,63,74]},{"index":0.63,"rgb":[255,123,0]},{"index":0.75,"rgb":[234,176,0]},{"index":0.88,"rgb":[190,228,0]},{"index":1,"rgb":[147,255,0]}],
+ 
+-  while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
+-    while (a.isEven()) {
+-      a.ishrn(1);
+-      if (x1.isEven())
+-        x1.ishrn(1);
+-      else
+-        x1.iadd(delta).ishrn(1);
+-    }
+-    while (b.isEven()) {
+-      b.ishrn(1);
+-      if (x2.isEven())
+-        x2.ishrn(1);
+-      else
+-        x2.iadd(delta).ishrn(1);
+-    }
+-    if (a.cmp(b) >= 0) {
+-      a.isub(b);
+-      x1.isub(x2);
+-    } else {
+-      b.isub(a);
+-      x2.isub(x1);
+-    }
+-  }
+-  if (a.cmpn(1) === 0)
+-    return x1;
+-  else
+-    return x2;
+-};
++	"cool": [{"index":0,"rgb":[125,0,179]},{"index":0.13,"rgb":[116,0,218]},{"index":0.25,"rgb":[98,74,237]},{"index":0.38,"rgb":[68,146,231]},{"index":0.5,"rgb":[0,204,197]},{"index":0.63,"rgb":[0,247,146]},{"index":0.75,"rgb":[0,255,88]},{"index":0.88,"rgb":[40,255,8]},{"index":1,"rgb":[147,255,0]}],
+ 
+-BN.prototype.gcd = function gcd(num) {
+-  if (this.cmpn(0) === 0)
+-    return num.clone();
+-  if (num.cmpn(0) === 0)
+-    return this.clone();
++	"rainbow-soft": [{"index":0,"rgb":[125,0,179]},{"index":0.1,"rgb":[199,0,180]},{"index":0.2,"rgb":[255,0,121]},{"index":0.3,"rgb":[255,108,0]},{"index":0.4,"rgb":[222,194,0]},{"index":0.5,"rgb":[150,255,0]},{"index":0.6,"rgb":[0,255,55]},{"index":0.7,"rgb":[0,246,150]},{"index":0.8,"rgb":[50,167,222]},{"index":0.9,"rgb":[103,51,235]},{"index":1,"rgb":[124,0,186]}],
+ 
+-  var a = this.clone();
+-  var b = num.clone();
+-  a.sign = false;
+-  b.sign = false;
++	"bathymetry": [{"index":0,"rgb":[40,26,44]},{"index":0.13,"rgb":[59,49,90]},{"index":0.25,"rgb":[64,76,139]},{"index":0.38,"rgb":[63,110,151]},{"index":0.5,"rgb":[72,142,158]},{"index":0.63,"rgb":[85,174,163]},{"index":0.75,"rgb":[120,206,163]},{"index":0.88,"rgb":[187,230,172]},{"index":1,"rgb":[253,254,204]}],
+ 
+-  // Remove common factor of two
+-  for (var shift = 0; a.isEven() && b.isEven(); shift++) {
+-    a.ishrn(1);
+-    b.ishrn(1);
+-  }
++	"cdom": [{"index":0,"rgb":[47,15,62]},{"index":0.13,"rgb":[87,23,86]},{"index":0.25,"rgb":[130,28,99]},{"index":0.38,"rgb":[171,41,96]},{"index":0.5,"rgb":[206,67,86]},{"index":0.63,"rgb":[230,106,84]},{"index":0.75,"rgb":[242,149,103]},{"index":0.88,"rgb":[249,193,135]},{"index":1,"rgb":[254,237,176]}],
+ 
+-  do {
+-    while (a.isEven())
+-      a.ishrn(1);
+-    while (b.isEven())
+-      b.ishrn(1);
++	"chlorophyll": [{"index":0,"rgb":[18,36,20]},{"index":0.13,"rgb":[25,63,41]},{"index":0.25,"rgb":[24,91,59]},{"index":0.38,"rgb":[13,119,72]},{"index":0.5,"rgb":[18,148,80]},{"index":0.63,"rgb":[80,173,89]},{"index":0.75,"rgb":[132,196,122]},{"index":0.88,"rgb":[175,221,162]},{"index":1,"rgb":[215,249,208]}],
+ 
+-    var r = a.cmp(b);
+-    if (r < 0) {
+-      // Swap `a` and `b` to make `a` always bigger than `b`
+-      var t = a;
+-      a = b;
+-      b = t;
+-    } else if (r === 0 || b.cmpn(1) === 0) {
+-      break;
+-    }
++	"density": [{"index":0,"rgb":[54,14,36]},{"index":0.13,"rgb":[89,23,80]},{"index":0.25,"rgb":[110,45,132]},{"index":0.38,"rgb":[120,77,178]},{"index":0.5,"rgb":[120,113,213]},{"index":0.63,"rgb":[115,151,228]},{"index":0.75,"rgb":[134,185,227]},{"index":0.88,"rgb":[177,214,227]},{"index":1,"rgb":[230,241,241]}],
+ 
+-    a.isub(b);
+-  } while (true);
++	"freesurface-blue": [{"index":0,"rgb":[30,4,110]},{"index":0.13,"rgb":[47,14,176]},{"index":0.25,"rgb":[41,45,236]},{"index":0.38,"rgb":[25,99,212]},{"index":0.5,"rgb":[68,131,200]},{"index":0.63,"rgb":[114,156,197]},{"index":0.75,"rgb":[157,181,203]},{"index":0.88,"rgb":[200,208,216]},{"index":1,"rgb":[241,237,236]}],
+ 
+-  return b.ishln(shift);
+-};
++	"freesurface-red": [{"index":0,"rgb":[60,9,18]},{"index":0.13,"rgb":[100,17,27]},{"index":0.25,"rgb":[142,20,29]},{"index":0.38,"rgb":[177,43,27]},{"index":0.5,"rgb":[192,87,63]},{"index":0.63,"rgb":[205,125,105]},{"index":0.75,"rgb":[216,162,148]},{"index":0.88,"rgb":[227,199,193]},{"index":1,"rgb":[241,237,236]}],
+ 
+-// Invert number in the field F(num)
+-BN.prototype.invm = function invm(num) {
+-  return this.egcd(num).a.mod(num);
+-};
++	"oxygen": [{"index":0,"rgb":[64,5,5]},{"index":0.13,"rgb":[106,6,15]},{"index":0.25,"rgb":[144,26,7]},{"index":0.38,"rgb":[168,64,3]},{"index":0.5,"rgb":[188,100,4]},{"index":0.63,"rgb":[206,136,11]},{"index":0.75,"rgb":[220,174,25]},{"index":0.88,"rgb":[231,215,44]},{"index":1,"rgb":[248,254,105]}],
+ 
+-BN.prototype.isEven = function isEven() {
+-  return (this.words[0] & 1) === 0;
+-};
++	"par": [{"index":0,"rgb":[51,20,24]},{"index":0.13,"rgb":[90,32,35]},{"index":0.25,"rgb":[129,44,34]},{"index":0.38,"rgb":[159,68,25]},{"index":0.5,"rgb":[182,99,19]},{"index":0.63,"rgb":[199,134,22]},{"index":0.75,"rgb":[212,171,35]},{"index":0.88,"rgb":[221,210,54]},{"index":1,"rgb":[225,253,75]}],
+ 
+-BN.prototype.isOdd = function isOdd() {
+-  return (this.words[0] & 1) === 1;
+-};
++	"phase": [{"index":0,"rgb":[145,105,18]},{"index":0.13,"rgb":[184,71,38]},{"index":0.25,"rgb":[186,58,115]},{"index":0.38,"rgb":[160,71,185]},{"index":0.5,"rgb":[110,97,218]},{"index":0.63,"rgb":[50,123,164]},{"index":0.75,"rgb":[31,131,110]},{"index":0.88,"rgb":[77,129,34]},{"index":1,"rgb":[145,105,18]}],
+ 
+-// And first word and num
+-BN.prototype.andln = function andln(num) {
+-  return this.words[0] & num;
+-};
++	"salinity": [{"index":0,"rgb":[42,24,108]},{"index":0.13,"rgb":[33,50,162]},{"index":0.25,"rgb":[15,90,145]},{"index":0.38,"rgb":[40,118,137]},{"index":0.5,"rgb":[59,146,135]},{"index":0.63,"rgb":[79,175,126]},{"index":0.75,"rgb":[120,203,104]},{"index":0.88,"rgb":[193,221,100]},{"index":1,"rgb":[253,239,154]}],
+ 
+-// Increment at the bit position in-line
+-BN.prototype.bincn = function bincn(bit) {
+-  assert(typeof bit === 'number');
+-  var r = bit % 26;
+-  var s = (bit - r) / 26;
+-  var q = 1 << r;
++	"temperature": [{"index":0,"rgb":[4,35,51]},{"index":0.13,"rgb":[23,51,122]},{"index":0.25,"rgb":[85,59,157]},{"index":0.38,"rgb":[129,79,143]},{"index":0.5,"rgb":[175,95,130]},{"index":0.63,"rgb":[222,112,101]},{"index":0.75,"rgb":[249,146,66]},{"index":0.88,"rgb":[249,196,65]},{"index":1,"rgb":[232,250,91]}],
+ 
+-  // Fast case: bit is much higher than all existing words
+-  if (this.length <= s) {
+-    for (var i = this.length; i < s + 1; i++)
+-      this.words[i] = 0;
+-    this.words[s] |= q;
+-    this.length = s + 1;
+-    return this;
+-  }
++	"turbidity": [{"index":0,"rgb":[34,31,27]},{"index":0.13,"rgb":[65,50,41]},{"index":0.25,"rgb":[98,69,52]},{"index":0.38,"rgb":[131,89,57]},{"index":0.5,"rgb":[161,112,59]},{"index":0.63,"rgb":[185,140,66]},{"index":0.75,"rgb":[202,174,88]},{"index":0.88,"rgb":[216,209,126]},{"index":1,"rgb":[233,246,171]}],
+ 
+-  // Add bit and propagate, if needed
+-  var carry = q;
+-  for (var i = s; carry !== 0 && i < this.length; i++) {
+-    var w = this.words[i];
+-    w += carry;
+-    carry = w >>> 26;
+-    w &= 0x3ffffff;
+-    this.words[i] = w;
+-  }
+-  if (carry !== 0) {
+-    this.words[i] = carry;
+-    this.length++;
+-  }
+-  return this;
++	"velocity-blue": [{"index":0,"rgb":[17,32,64]},{"index":0.13,"rgb":[35,52,116]},{"index":0.25,"rgb":[29,81,156]},{"index":0.38,"rgb":[31,113,162]},{"index":0.5,"rgb":[50,144,169]},{"index":0.63,"rgb":[87,173,176]},{"index":0.75,"rgb":[149,196,189]},{"index":0.88,"rgb":[203,221,211]},{"index":1,"rgb":[254,251,230]}],
++
++	"velocity-green": [{"index":0,"rgb":[23,35,19]},{"index":0.13,"rgb":[24,64,38]},{"index":0.25,"rgb":[11,95,45]},{"index":0.38,"rgb":[39,123,35]},{"index":0.5,"rgb":[95,146,12]},{"index":0.63,"rgb":[152,165,18]},{"index":0.75,"rgb":[201,186,69]},{"index":0.88,"rgb":[233,216,137]},{"index":1,"rgb":[255,253,205]}],
++
++	"cubehelix": [{"index":0,"rgb":[0,0,0]},{"index":0.07,"rgb":[22,5,59]},{"index":0.13,"rgb":[60,4,105]},{"index":0.2,"rgb":[109,1,135]},{"index":0.27,"rgb":[161,0,147]},{"index":0.33,"rgb":[210,2,142]},{"index":0.4,"rgb":[251,11,123]},{"index":0.47,"rgb":[255,29,97]},{"index":0.53,"rgb":[255,54,69]},{"index":0.6,"rgb":[255,85,46]},{"index":0.67,"rgb":[255,120,34]},{"index":0.73,"rgb":[255,157,37]},{"index":0.8,"rgb":[241,191,57]},{"index":0.87,"rgb":[224,220,93]},{"index":0.93,"rgb":[218,241,142]},{"index":1,"rgb":[227,253,198]}]
+ };
+ 
+-BN.prototype.cmpn = function cmpn(num) {
+-  var sign = num < 0;
+-  if (sign)
+-    num = -num;
++},{}],75:[function(require,module,exports){
++/*
++ * Ben Postlethwaite
++ * January 2013
++ * License MIT
++ */
++'use strict';
+ 
+-  if (this.sign && !sign)
+-    return -1;
+-  else if (!this.sign && sign)
+-    return 1;
++var at = require('arraytools');
++var clone = require('clone');
++var colorScale = require('./colorScales');
+ 
+-  num &= 0x3ffffff;
+-  this.strip();
++module.exports = createColormap;
+ 
+-  var res;
+-  if (this.length > 1) {
+-    res = 1;
+-  } else {
+-    var w = this.words[0];
+-    res = w === num ? 0 : w < num ? -1 : 1;
+-  }
+-  if (this.sign)
+-    res = -res;
+-  return res;
+-};
+-
+-// Compare two numbers and return:
+-// 1 - if `this` > `num`
+-// 0 - if `this` == `num`
+-// -1 - if `this` < `num`
+-BN.prototype.cmp = function cmp(num) {
+-  if (this.sign && !num.sign)
+-    return -1;
+-  else if (!this.sign && num.sign)
+-    return 1;
++function createColormap (spec) {
++    /*
++     * Default Options
++     */
++    var indicies, rgba, fromrgba, torgba,
++        nsteps, cmap, colormap, format,
++        nshades, colors, alpha, index, i,
++        r = [],
++        g = [],
++        b = [],
++        a = [];
+ 
+-  var res = this.ucmp(num);
+-  if (this.sign)
+-    return -res;
+-  else
+-    return res;
+-};
++    if ( !at.isPlainObject(spec) ) spec = {};
+ 
+-// Unsigned comparison
+-BN.prototype.ucmp = function ucmp(num) {
+-  // At this point both numbers have the same sign
+-  if (this.length > num.length)
+-    return 1;
+-  else if (this.length < num.length)
+-    return -1;
++    nshades = spec.nshades || 72;
++    format = spec.format || 'hex';
+ 
+-  var res = 0;
+-  for (var i = this.length - 1; i >= 0; i--) {
+-    var a = this.words[i];
+-    var b = num.words[i];
++    colormap = spec.colormap;
++    if (!colormap) colormap = 'jet';
+ 
+-    if (a === b)
+-      continue;
+-    if (a < b)
+-      res = -1;
+-    else if (a > b)
+-      res = 1;
+-    break;
+-  }
+-  return res;
+-};
++    if (typeof colormap === 'string') {
++        colormap = colormap.toLowerCase();
+ 
+-//
+-// A reduce context, could be using montgomery or something better, depending
+-// on the `m` itself.
+-//
+-BN.red = function red(num) {
+-  return new Red(num);
+-};
++        if (!colorScale[colormap]) {
++            throw Error(colormap + ' not a supported colorscale');
++        }
+ 
+-BN.prototype.toRed = function toRed(ctx) {
+-  assert(!this.red, 'Already a number in reduction context');
+-  assert(!this.sign, 'red works only with positives');
+-  return ctx.convertTo(this)._forceRed(ctx);
+-};
++        cmap = clone(colorScale[colormap]);
+ 
+-BN.prototype.fromRed = function fromRed() {
+-  assert(this.red, 'fromRed works only with numbers in reduction context');
+-  return this.red.convertFrom(this);
+-};
++    } else if (Array.isArray(colormap)) {
++        cmap = clone(colormap);
+ 
+-BN.prototype._forceRed = function _forceRed(ctx) {
+-  this.red = ctx;
+-  return this;
+-};
++    } else {
++        throw Error('unsupported colormap option', colormap);
++    }
+ 
+-BN.prototype.forceRed = function forceRed(ctx) {
+-  assert(!this.red, 'Already a number in reduction context');
+-  return this._forceRed(ctx);
+-};
++    if (cmap.length > nshades) {
++        throw new Error(
++            colormap+' map requires nshades to be at least size '+cmap.length
++        );
++    }
+ 
+-BN.prototype.redAdd = function redAdd(num) {
+-  assert(this.red, 'redAdd works only with red numbers');
+-  return this.red.add(this, num);
+-};
++    if (!Array.isArray(spec.alpha)) {
+ 
+-BN.prototype.redIAdd = function redIAdd(num) {
+-  assert(this.red, 'redIAdd works only with red numbers');
+-  return this.red.iadd(this, num);
+-};
++        if (typeof spec.alpha === 'number') {
++            alpha = [spec.alpha, spec.alpha];
+ 
+-BN.prototype.redSub = function redSub(num) {
+-  assert(this.red, 'redSub works only with red numbers');
+-  return this.red.sub(this, num);
+-};
++        } else {
++            alpha = [1, 1];
++        }
+ 
+-BN.prototype.redISub = function redISub(num) {
+-  assert(this.red, 'redISub works only with red numbers');
+-  return this.red.isub(this, num);
+-};
++    } else if (spec.alpha.length !== 2) {
++        alpha = [1, 1];
+ 
+-BN.prototype.redShl = function redShl(num) {
+-  assert(this.red, 'redShl works only with red numbers');
+-  return this.red.shl(this, num);
+-};
++    } else {
++        alpha = clone(spec.alpha);
++    }
+ 
+-BN.prototype.redMul = function redMul(num) {
+-  assert(this.red, 'redMul works only with red numbers');
+-  this.red._verify2(this, num);
+-  return this.red.mul(this, num);
+-};
++    /*
++     * map index points from 0->1 to 0 -> n-1
++     */
++    indicies = cmap.map(function(c) {
++        return Math.round(c.index * nshades);
++    });
+ 
+-BN.prototype.redIMul = function redIMul(num) {
+-  assert(this.red, 'redMul works only with red numbers');
+-  this.red._verify2(this, num);
+-  return this.red.imul(this, num);
+-};
++    /*
++     * Add alpha channel to the map
++     */
++    if (alpha[0] < 0) alpha[0] = 0;
++    if (alpha[1] < 0) alpha[0] = 0;
++    if (alpha[0] > 1) alpha[0] = 1;
++    if (alpha[1] > 1) alpha[0] = 1;
+ 
+-BN.prototype.redSqr = function redSqr() {
+-  assert(this.red, 'redSqr works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.sqr(this);
+-};
++    for (i = 0; i < indicies.length; ++i) {
++        index = cmap[i].index;
++        rgba = cmap[i].rgb;
+ 
+-BN.prototype.redISqr = function redISqr() {
+-  assert(this.red, 'redISqr works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.isqr(this);
+-};
++        // if user supplies their own map use it
++        if (rgba.length === 4 && rgba[3] >= 0 && rgba[3] <= 1) continue;
++        rgba[3] = alpha[0] + (alpha[1] - alpha[0])*index;
++    }
+ 
+-// Square root over p
+-BN.prototype.redSqrt = function redSqrt() {
+-  assert(this.red, 'redSqrt works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.sqrt(this);
+-};
++    /*
++     * map increasing linear values between indicies to
++     * linear steps in colorvalues
++     */
++    for (i = 0; i < indicies.length-1; ++i) {
++        nsteps = indicies[i+1] - indicies[i];
++        fromrgba = cmap[i].rgb;
++        torgba = cmap[i+1].rgb;
++        r = r.concat(at.linspace(fromrgba[0], torgba[0], nsteps ) );
++        g = g.concat(at.linspace(fromrgba[1], torgba[1], nsteps ) );
++        b = b.concat(at.linspace(fromrgba[2], torgba[2], nsteps ) );
++        a = a.concat(at.linspace(fromrgba[3], torgba[3], nsteps ) );
++    }
+ 
+-BN.prototype.redInvm = function redInvm() {
+-  assert(this.red, 'redInvm works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.invm(this);
+-};
++    r = r.map( Math.round );
++    g = g.map( Math.round );
++    b = b.map( Math.round );
+ 
+-// Return negative clone of `this` % `red modulo`
+-BN.prototype.redNeg = function redNeg() {
+-  assert(this.red, 'redNeg works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.neg(this);
+-};
++    colors = at.zip(r, g, b, a);
+ 
+-BN.prototype.redPow = function redPow(num) {
+-  assert(this.red && !num.red, 'redPow(normalNum)');
+-  this.red._verify1(this);
+-  return this.red.pow(this, num);
+-};
++    if (format === 'hex') colors = colors.map( rgb2hex );
++    if (format === 'rgbaString') colors = colors.map( rgbaStr );
+ 
+-// Prime numbers with efficient reduction
+-var primes = {
+-  k256: null,
+-  p224: null,
+-  p192: null,
+-  p25519: null
++    return colors;
+ };
+ 
+-// Pseudo-Mersenne prime
+-function MPrime(name, p) {
+-  // P = 2 ^ N - K
+-  this.name = name;
+-  this.p = new BN(p, 16);
+-  this.n = this.p.bitLength();
+-  this.k = new BN(1).ishln(this.n).isub(this.p);
+ 
+-  this.tmp = this._tmp();
++function rgb2hex (rgba) {
++    var dig, hex = '#';
++    for (var i = 0; i < 3; ++i) {
++        dig = rgba[i];
++        dig = dig.toString(16);
++        hex += ('00' + dig).substr( dig.length );
++    }
++    return hex;
+ }
+ 
+-MPrime.prototype._tmp = function _tmp() {
+-  var tmp = new BN(null);
+-  tmp.words = new Array(Math.ceil(this.n / 13));
+-  return tmp;
+-};
++function rgbaStr (rgba) {
++    return 'rgba(' + rgba.join(',') + ')';
++}
+ 
+-MPrime.prototype.ireduce = function ireduce(num) {
+-  // Assumes that `num` is less than `P^2`
+-  // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
+-  var r = num;
+-  var rlen;
++},{"./colorScales":74,"arraytools":28,"clone":73}],76:[function(require,module,exports){
++"use strict"
+ 
+-  do {
+-    this.split(r, this.tmp);
+-    r = this.imulK(r);
+-    r = r.iadd(this.tmp);
+-    rlen = r.bitLength();
+-  } while (rlen > this.n);
++module.exports = compareAngle
+ 
+-  var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
+-  if (cmp === 0) {
+-    r.words[0] = 0;
+-    r.length = 1;
+-  } else if (cmp > 0) {
+-    r.isub(this.p);
+-  } else {
+-    r.strip();
+-  }
++var orient = require("robust-orientation")
++var sgn = require("signum")
++var twoSum = require("two-sum")
++var robustProduct = require("robust-product")
++var robustSum = require("robust-sum")
+ 
+-  return r;
+-};
++function testInterior(a, b, c) {
++  var x0 = twoSum(a[0], -b[0])
++  var y0 = twoSum(a[1], -b[1])
++  var x1 = twoSum(c[0], -b[0])
++  var y1 = twoSum(c[1], -b[1])
+ 
+-MPrime.prototype.split = function split(input, out) {
+-  input.ishrn(this.n, 0, out);
+-};
++  var d = robustSum(
++    robustProduct(x0, x1),
++    robustProduct(y0, y1))
+ 
+-MPrime.prototype.imulK = function imulK(num) {
+-  return num.imul(this.k);
+-};
++  return d[d.length-1] >= 0
++}
+ 
+-function K256() {
+-  MPrime.call(
+-    this,
+-    'k256',
+-    'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
++function compareAngle(a, b, c, d) {
++  var bcd = orient(b, c, d)
++  if(bcd === 0) {
++    //Handle degenerate cases
++    var sabc = sgn(orient(a, b, c))
++    var sabd = sgn(orient(a, b, d))
++    if(sabc === sabd) {
++      if(sabc === 0) {
++        var ic = testInterior(a, b, c)
++        var id = testInterior(a, b, d)
++        if(ic === id) {
++          return 0
++        } else if(ic) {
++          return 1
++        } else {
++          return -1
++        }
++      }
++      return 0
++    } else if(sabd === 0) {
++      if(sabc > 0) {
++        return -1
++      } else if(testInterior(a, b, d)) {
++        return -1
++      } else {
++        return 1
++      }
++    } else if(sabc === 0) {
++      if(sabd > 0) {
++        return 1
++      } else if(testInterior(a, b, c)) {
++        return 1
++      } else {
++        return -1
++      }
++    }
++    return sgn(sabd - sabc)
++  }
++  var abc = orient(a, b, c)
++  if(abc > 0) {
++    if(bcd > 0 && orient(a, b, d) > 0) {
++      return 1
++    }
++    return -1
++  } else if(abc < 0) {
++    if(bcd > 0 || orient(a, b, d) > 0) {
++      return 1
++    }
++    return -1
++  } else {
++    var abd = orient(a, b, d)
++    if(abd > 0) {
++      return 1
++    } else {
++      if(testInterior(a, b, c)) {
++        return 1
++      } else {
++        return -1
++      }
++    }
++  }
+ }
+-inherits(K256, MPrime);
++},{"robust-orientation":418,"robust-product":419,"robust-sum":423,"signum":425,"two-sum":448}],77:[function(require,module,exports){
++module.exports = compareCells
+ 
+-K256.prototype.split = function split(input, output) {
+-  // 256 = 9 * 26 + 22
+-  var mask = 0x3fffff;
++var min = Math.min
+ 
+-  var outLen = Math.min(input.length, 9);
+-  for (var i = 0; i < outLen; i++)
+-    output.words[i] = input.words[i];
+-  output.length = outLen;
++function compareInt(a, b) {
++  return a - b
++}
+ 
+-  if (input.length <= 9) {
+-    input.words[0] = 0;
+-    input.length = 1;
+-    return;
++function compareCells(a, b) {
++  var n = a.length
++    , t = a.length - b.length
++  if(t) {
++    return t
+   }
+-
+-  // Shift by 9 limbs
+-  var prev = input.words[9];
+-  output.words[output.length++] = prev & mask;
+-
+-  for (var i = 10; i < input.length; i++) {
+-    var next = input.words[i];
+-    input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
+-    prev = next;
++  switch(n) {
++    case 0:
++      return 0
++    case 1:
++      return a[0] - b[0]
++    case 2:
++      return (a[0]+a[1]-b[0]-b[1]) ||
++             min(a[0],a[1]) - min(b[0],b[1])
++    case 3:
++      var l1 = a[0]+a[1]
++        , m1 = b[0]+b[1]
++      t = l1+a[2] - (m1+b[2])
++      if(t) {
++        return t
++      }
++      var l0 = min(a[0], a[1])
++        , m0 = min(b[0], b[1])
++      return min(l0, a[2]) - min(m0, b[2]) ||
++             min(l0+a[2], l1) - min(m0+b[2], m1)
++    case 4:
++      var aw=a[0], ax=a[1], ay=a[2], az=a[3]
++        , bw=b[0], bx=b[1], by=b[2], bz=b[3]
++      return (aw+ax+ay+az)-(bw+bx+by+bz) ||
++             min(aw,ax,ay,az)-min(bw,bx,by,bz,bw) ||
++             min(aw+ax,aw+ay,aw+az,ax+ay,ax+az,ay+az) -
++               min(bw+bx,bw+by,bw+bz,bx+by,bx+bz,by+bz) ||
++             min(aw+ax+ay,aw+ax+az,aw+ay+az,ax+ay+az) -
++               min(bw+bx+by,bw+bx+bz,bw+by+bz,bx+by+bz)
++    default:
++      var as = a.slice().sort(compareInt)
++      var bs = b.slice().sort(compareInt)
++      for(var i=0; i<n; ++i) {
++        t = as[i] - bs[i]
++        if(t) {
++          return t
++        }
++      }
++      return 0
+   }
+-  input.words[i - 10] = prev >>> 22;
+-  input.length -= 9;
+-};
++}
+ 
+-K256.prototype.imulK = function imulK(num) {
+-  // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
+-  num.words[num.length] = 0;
+-  num.words[num.length + 1] = 0;
+-  num.length += 2;
++},{}],78:[function(require,module,exports){
++'use strict'
+ 
+-  // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
+-  var hi;
+-  var lo = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var w = num.words[i];
+-    hi = w * 0x40;
+-    lo += w * 0x3d1;
+-    hi += (lo / 0x4000000) | 0;
+-    lo &= 0x3ffffff;
++var compareCells = require('compare-cell')
++var parity = require('cell-orientation')
+ 
+-    num.words[i] = lo;
++module.exports = compareOrientedCells
+ 
+-    lo = hi;
+-  }
++function compareOrientedCells(a, b) {
++  return compareCells(a, b) || parity(a) - parity(b)
++}
+ 
+-  // Fast length reduction
+-  if (num.words[num.length - 1] === 0) {
+-    num.length--;
+-    if (num.words[num.length - 1] === 0)
+-      num.length--;
+-  }
+-  return num;
+-};
++},{"cell-orientation":68,"compare-cell":77}],79:[function(require,module,exports){
++"use strict"
+ 
+-function P224() {
+-  MPrime.call(
+-    this,
+-    'p224',
+-    'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
+-}
+-inherits(P224, MPrime);
++var convexHull1d = require('./lib/ch1d')
++var convexHull2d = require('./lib/ch2d')
++var convexHullnd = require('./lib/chnd')
+ 
+-function P192() {
+-  MPrime.call(
+-    this,
+-    'p192',
+-    'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
+-}
+-inherits(P192, MPrime);
++module.exports = convexHull
+ 
+-function P25519() {
+-  // 2 ^ 255 - 19
+-  MPrime.call(
+-    this,
+-    '25519',
+-    '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
++function convexHull(points) {
++  var n = points.length
++  if(n === 0) {
++    return []
++  } else if(n === 1) {
++    return [[0]]
++  }
++  var d = points[0].length
++  if(d === 0) {
++    return []
++  } else if(d === 1) {
++    return convexHull1d(points)
++  } else if(d === 2) {
++    return convexHull2d(points)
++  }
++  return convexHullnd(points, d)
+ }
+-inherits(P25519, MPrime);
++},{"./lib/ch1d":80,"./lib/ch2d":81,"./lib/chnd":82}],80:[function(require,module,exports){
++"use strict"
+ 
+-P25519.prototype.imulK = function imulK(num) {
+-  // K = 0x13
+-  var carry = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var hi = num.words[i] * 0x13 + carry;
+-    var lo = hi & 0x3ffffff;
+-    hi >>>= 26;
++module.exports = convexHull1d
+ 
+-    num.words[i] = lo;
+-    carry = hi;
+-  }
+-  if (carry !== 0)
+-    num.words[num.length++] = carry;
+-  return num;
+-};
+-
+-// Exported mostly for testing purposes, use plain name instead
+-BN._prime = function prime(name) {
+-  // Cached version of prime
+-  if (primes[name])
+-    return primes[name];
+-
+-  var prime;
+-  if (name === 'k256')
+-    prime = new K256();
+-  else if (name === 'p224')
+-    prime = new P224();
+-  else if (name === 'p192')
+-    prime = new P192();
+-  else if (name === 'p25519')
+-    prime = new P25519();
+-  else
+-    throw new Error('Unknown prime ' + name);
+-  primes[name] = prime;
+-
+-  return prime;
+-};
+-
+-//
+-// Base reduction engine
+-//
+-function Red(m) {
+-  if (typeof m === 'string') {
+-    var prime = BN._prime(m);
+-    this.m = prime.p;
+-    this.prime = prime;
+-  } else {
+-    this.m = m;
+-    this.prime = null;
+-  }
+-}
+-
+-Red.prototype._verify1 = function _verify1(a) {
+-  assert(!a.sign, 'red works only with positives');
+-  assert(a.red, 'red works only with red numbers');
+-};
+-
+-Red.prototype._verify2 = function _verify2(a, b) {
+-  assert(!a.sign && !b.sign, 'red works only with positives');
+-  assert(a.red && a.red === b.red,
+-         'red works only with red numbers');
+-};
+-
+-Red.prototype.imod = function imod(a) {
+-  if (this.prime)
+-    return this.prime.ireduce(a)._forceRed(this);
+-  return a.mod(this.m)._forceRed(this);
+-};
+-
+-Red.prototype.neg = function neg(a) {
+-  var r = a.clone();
+-  r.sign = !r.sign;
+-  return r.iadd(this.m)._forceRed(this);
+-};
+-
+-Red.prototype.add = function add(a, b) {
+-  this._verify2(a, b);
+-
+-  var res = a.add(b);
+-  if (res.cmp(this.m) >= 0)
+-    res.isub(this.m);
+-  return res._forceRed(this);
+-};
+-
+-Red.prototype.iadd = function iadd(a, b) {
+-  this._verify2(a, b);
+-
+-  var res = a.iadd(b);
+-  if (res.cmp(this.m) >= 0)
+-    res.isub(this.m);
+-  return res;
+-};
+-
+-Red.prototype.sub = function sub(a, b) {
+-  this._verify2(a, b);
+-
+-  var res = a.sub(b);
+-  if (res.cmpn(0) < 0)
+-    res.iadd(this.m);
+-  return res._forceRed(this);
+-};
+-
+-Red.prototype.isub = function isub(a, b) {
+-  this._verify2(a, b);
+-
+-  var res = a.isub(b);
+-  if (res.cmpn(0) < 0)
+-    res.iadd(this.m);
+-  return res;
+-};
+-
+-Red.prototype.shl = function shl(a, num) {
+-  this._verify1(a);
+-  return this.imod(a.shln(num));
+-};
+-
+-Red.prototype.imul = function imul(a, b) {
+-  this._verify2(a, b);
+-  return this.imod(a.imul(b));
+-};
+-
+-Red.prototype.mul = function mul(a, b) {
+-  this._verify2(a, b);
+-  return this.imod(a.mul(b));
+-};
+-
+-Red.prototype.isqr = function isqr(a) {
+-  return this.imul(a, a);
+-};
+-
+-Red.prototype.sqr = function sqr(a) {
+-  return this.mul(a, a);
+-};
+-
+-Red.prototype.sqrt = function sqrt(a) {
+-  if (a.cmpn(0) === 0)
+-    return a.clone();
+-
+-  var mod3 = this.m.andln(3);
+-  assert(mod3 % 2 === 1);
+-
+-  // Fast case
+-  if (mod3 === 3) {
+-    var pow = this.m.add(new BN(1)).ishrn(2);
+-    var r = this.pow(a, pow);
+-    return r;
+-  }
+-
+-  // Tonelli-Shanks algorithm (Totally unoptimized and slow)
+-  //
+-  // Find Q and S, that Q * 2 ^ S = (P - 1)
+-  var q = this.m.subn(1);
+-  var s = 0;
+-  while (q.cmpn(0) !== 0 && q.andln(1) === 0) {
+-    s++;
+-    q.ishrn(1);
+-  }
+-  assert(q.cmpn(0) !== 0);
+-
+-  var one = new BN(1).toRed(this);
+-  var nOne = one.redNeg();
+-
+-  // Find quadratic non-residue
+-  // NOTE: Max is such because of generalized Riemann hypothesis.
+-  var lpow = this.m.subn(1).ishrn(1);
+-  var z = this.m.bitLength();
+-  z = new BN(2 * z * z).toRed(this);
+-  while (this.pow(z, lpow).cmp(nOne) !== 0)
+-    z.redIAdd(nOne);
+-
+-  var c = this.pow(z, q);
+-  var r = this.pow(a, q.addn(1).ishrn(1));
+-  var t = this.pow(a, q);
+-  var m = s;
+-  while (t.cmp(one) !== 0) {
+-    var tmp = t;
+-    for (var i = 0; tmp.cmp(one) !== 0; i++)
+-      tmp = tmp.redSqr();
+-    assert(i < m);
+-    var b = this.pow(c, new BN(1).ishln(m - i - 1));
+-
+-    r = r.redMul(b);
+-    c = b.redSqr();
+-    t = t.redMul(c);
+-    m = i;
+-  }
+-
+-  return r;
+-};
+-
+-Red.prototype.invm = function invm(a) {
+-  var inv = a._invmp(this.m);
+-  if (inv.sign) {
+-    inv.sign = false;
+-    return this.imod(inv).redNeg();
+-  } else {
+-    return this.imod(inv);
+-  }
+-};
+-
+-Red.prototype.pow = function pow(a, num) {
+-  var w = [];
+-
+-  if (num.cmpn(0) === 0)
+-    return new BN(1);
+-
+-  var q = num.clone();
+-
+-  while (q.cmpn(0) !== 0) {
+-    w.push(q.andln(1));
+-    q.ishrn(1);
+-  }
+-
+-  // Skip leading zeroes
+-  var res = a;
+-  for (var i = 0; i < w.length; i++, res = this.sqr(res))
+-    if (w[i] !== 0)
+-      break;
+-
+-  if (++i < w.length) {
+-    for (var q = this.sqr(res); i < w.length; i++, q = this.sqr(q)) {
+-      if (w[i] === 0)
+-        continue;
+-      res = this.mul(res, q);
++function convexHull1d(points) {
++  var lo = 0
++  var hi = 0
++  for(var i=1; i<points.length; ++i) {
++    if(points[i][0] < points[lo][0]) {
++      lo = i
++    }
++    if(points[i][0] > points[hi][0]) {
++      hi = i
+     }
+   }
+-
+-  return res;
+-};
+-
+-Red.prototype.convertTo = function convertTo(num) {
+-  var r = num.mod(this.m);
+-  if (r === num)
+-    return r.clone();
+-  else
+-    return r;
+-};
+-
+-Red.prototype.convertFrom = function convertFrom(num) {
+-  var res = num.clone();
+-  res.red = null;
+-  return res;
+-};
+-
+-//
+-// Montgomery method engine
+-//
+-
+-BN.mont = function mont(num) {
+-  return new Mont(num);
+-};
+-
+-function Mont(m) {
+-  Red.call(this, m);
+-
+-  this.shift = this.m.bitLength();
+-  if (this.shift % 26 !== 0)
+-    this.shift += 26 - (this.shift % 26);
+-  this.r = new BN(1).ishln(this.shift);
+-  this.r2 = this.imod(this.r.sqr());
+-  this.rinv = this.r._invmp(this.m);
+-
+-  this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
+-  this.minv.sign = true;
+-  this.minv = this.minv.mod(this.r);
+-}
+-inherits(Mont, Red);
+-
+-Mont.prototype.convertTo = function convertTo(num) {
+-  return this.imod(num.shln(this.shift));
+-};
+-
+-Mont.prototype.convertFrom = function convertFrom(num) {
+-  var r = this.imod(num.mul(this.rinv));
+-  r.red = null;
+-  return r;
+-};
+-
+-Mont.prototype.imul = function imul(a, b) {
+-  if (a.cmpn(0) === 0 || b.cmpn(0) === 0) {
+-    a.words[0] = 0;
+-    a.length = 1;
+-    return a;
++  if(lo < hi) {
++    return [[lo], [hi]]
++  } else if(lo > hi) {
++    return [[hi], [lo]]
++  } else {
++    return [[lo]]
+   }
+-
+-  var t = a.imul(b);
+-  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
+-  var u = t.isub(c).ishrn(this.shift);
+-  var res = u;
+-  if (u.cmp(this.m) >= 0)
+-    res = u.isub(this.m);
+-  else if (u.cmpn(0) < 0)
+-    res = u.iadd(this.m);
+-
+-  return res._forceRed(this);
+-};
+-
+-Mont.prototype.mul = function mul(a, b) {
+-  if (a.cmpn(0) === 0 || b.cmpn(0) === 0)
+-    return new BN(0)._forceRed(this);
+-
+-  var t = a.mul(b);
+-  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
+-  var u = t.isub(c).ishrn(this.shift);
+-  var res = u;
+-  if (u.cmp(this.m) >= 0)
+-    res = u.isub(this.m);
+-  else if (u.cmpn(0) < 0)
+-    res = u.iadd(this.m);
+-
+-  return res._forceRed(this);
+-};
+-
+-Mont.prototype.invm = function invm(a) {
+-  // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
+-  var res = this.imod(a._invmp(this.m).mul(this.r2));
+-  return res._forceRed(this);
+-};
+-
+-})(typeof module === 'undefined' || module, this);
+-
+-},{}],86:[function(require,module,exports){
+-'use strict'
+-
+-var bnsign = require('./lib/bn-sign')
+-
+-module.exports = sign
+-
+-function sign(x) {
+-  return bnsign(x[0]) * bnsign(x[1])
+-}
+-
+-},{"./lib/bn-sign":77}],87:[function(require,module,exports){
+-'use strict'
+-
+-var rationalize = require('./lib/rationalize')
+-
+-module.exports = sub
+-
+-function sub(a, b) {
+-  return rationalize(a[0].mul(b[1]).sub(a[1].mul(b[0])), a[1].mul(b[1]))
+ }
+-
+-},{"./lib/rationalize":82}],88:[function(require,module,exports){
++},{}],81:[function(require,module,exports){
+ 'use strict'
+ 
+-var bn2num = require('./lib/bn-to-num')
+-var ctz = require('./lib/ctz')
++module.exports = convexHull2D
+ 
+-module.exports = roundRat
++var monotoneHull = require('monotone-convex-hull-2d')
+ 
+-//Round a rational to the closest float
+-function roundRat(f) {
+-  var a = f[0]
+-  var b = f[1]
+-  if(a.cmpn(0) === 0) {
+-    return 0
+-  }
+-  var h = a.divmod(b)
+-  var iv = h.div
+-  var x = bn2num(iv)
+-  var ir = h.mod
+-  if(ir.cmpn(0) === 0) {
+-    return x
++function convexHull2D(points) {
++  var hull = monotoneHull(points)
++  var h = hull.length
++  if(h <= 2) {
++    return []
+   }
+-  if(x) {
+-    var s = ctz(x) + 4
+-    var y = bn2num(ir.shln(s).divRound(b))
+-
+-    // flip the sign of y if x is negative
+-    if (x<0) {
+-      y = -y;
+-    }
+-
+-    return x + y * Math.pow(2, -s)
+-  } else {
+-    var ybits = b.bitLength() - ir.bitLength() + 53
+-    var y = bn2num(ir.shln(ybits).divRound(b))
+-    if(ybits < 1023) {
+-      return y * Math.pow(2, -ybits)
+-    }
+-    y *= Math.pow(2, -1023)
+-    return y * Math.pow(2, 1023-ybits)
++  var edges = new Array(h)
++  var a = hull[h-1]
++  for(var i=0; i<h; ++i) {
++    var b = hull[i]
++    edges[i] = [a,b]
++    a = b
+   }
++  return edges
+ }
+ 
+-},{"./lib/bn-to-num":78,"./lib/ctz":79}],89:[function(require,module,exports){
++},{"monotone-convex-hull-2d":370}],82:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = boxIntersectWrapper
++module.exports = convexHullnD
+ 
+-var pool = require('typedarray-pool')
+-var sweep = require('./lib/sweep')
+-var boxIntersectIter = require('./lib/intersect')
++var ich = require('incremental-convex-hull')
++var aff = require('affine-hull')
+ 
+-function boxEmpty(d, box) {
+-  for(var j=0; j<d; ++j) {
+-    if(!(box[j] <= box[j+d])) {
+-      return true
+-    }
++function permute(points, front) {
++  var n = points.length
++  var npoints = new Array(n)
++  for(var i=0; i<front.length; ++i) {
++    npoints[i] = points[front[i]]
+   }
+-  return false
+-}
+-
+-//Unpack boxes into a flat typed array, remove empty boxes
+-function convertBoxes(boxes, d, data, ids) {
+-  var ptr = 0
+-  var count = 0
+-  for(var i=0, n=boxes.length; i<n; ++i) {
+-    var b = boxes[i]
+-    if(boxEmpty(d, b)) {
+-      continue
+-    }
+-    for(var j=0; j<2*d; ++j) {
+-      data[ptr++] = b[j]
++  var ptr = front.length
++  for(var i=0; i<n; ++i) {
++    if(front.indexOf(i) < 0) {
++      npoints[ptr++] = points[i]
+     }
+-    ids[count++] = i
+   }
+-  return count
++  return npoints
+ }
+ 
+-//Perform type conversions, check bounds
+-function boxIntersect(red, blue, visit, full) {
+-  var n = red.length
+-  var m = blue.length
+-
+-  //If either array is empty, then we can skip this whole thing
+-  if(n <= 0 || m <= 0) {
+-    return
+-  }
+-
+-  //Compute dimension, if it is 0 then we skip
+-  var d = (red[0].length)>>>1
+-  if(d <= 0) {
+-    return
+-  }
+-
+-  var retval
+-
+-  //Convert red boxes
+-  var redList  = pool.mallocDouble(2*d*n)
+-  var redIds   = pool.mallocInt32(n)
+-  n = convertBoxes(red, d, redList, redIds)
+-
+-  if(n > 0) {
+-    if(d === 1 && full) {
+-      //Special case: 1d complete
+-      sweep.init(n)
+-      retval = sweep.sweepComplete(
+-        d, visit, 
+-        0, n, redList, redIds,
+-        0, n, redList, redIds)
+-    } else {
+-
+-      //Convert blue boxes
+-      var blueList = pool.mallocDouble(2*d*m)
+-      var blueIds  = pool.mallocInt32(m)
+-      m = convertBoxes(blue, d, blueList, blueIds)
+-
+-      if(m > 0) {
+-        sweep.init(n+m)
+-
+-        if(d === 1) {
+-          //Special case: 1d bipartite
+-          retval = sweep.sweepBipartite(
+-            d, visit, 
+-            0, n, redList,  redIds,
+-            0, m, blueList, blueIds)
+-        } else {
+-          //General case:  d>1
+-          retval = boxIntersectIter(
+-            d, visit,    full,
+-            n, redList,  redIds,
+-            m, blueList, blueIds)
++function invPermute(cells, front) {
++  var nc = cells.length
++  var nf = front.length
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      var x = c[j]
++      if(x < nf) {
++        c[j] = front[x]
++      } else {
++        x = x - nf
++        for(var k=0; k<nf; ++k) {
++          if(x >= front[k]) {
++            x += 1
++          }
+         }
+-
+-        pool.free(blueList)
+-        pool.free(blueIds)
++        c[j] = x
+       }
+     }
+-
+-    pool.free(redList)
+-    pool.free(redIds)
+   }
+-
+-  return retval
+-}
+-
+-
+-var RESULT
+-
+-function appendItem(i,j) {
+-  RESULT.push([i,j])
++  return cells
+ }
+ 
+-function intersectFullArray(x) {
+-  RESULT = []
+-  boxIntersect(x, x, appendItem, true)
+-  return RESULT
+-}
+-
+-function intersectBipartiteArray(x, y) {
+-  RESULT = []
+-  boxIntersect(x, y, appendItem, false)
+-  return RESULT
+-}
+-
+-//User-friendly wrapper, handle full input and no-visitor cases
+-function boxIntersectWrapper(arg0, arg1, arg2) {
+-  var result
+-  switch(arguments.length) {
+-    case 1:
+-      return intersectFullArray(arg0)
+-    case 2:
+-      if(typeof arg1 === 'function') {
+-        return boxIntersect(arg0, arg0, arg1, true)
+-      } else {
+-        return intersectBipartiteArray(arg0, arg1)
+-      }
+-    case 3:
+-      return boxIntersect(arg0, arg1, arg2, false)
+-    default:
+-      throw new Error('box-intersect: Invalid arguments')
++function convexHullnD(points, d) {
++  try {
++    return ich(points, true)
++  } catch(e) {
++    //If point set is degenerate, try to find a basis and rerun it
++    var ah = aff(points)
++    if(ah.length <= d) {
++      //No basis, no try
++      return []
++    }
++    var npoints = permute(points, ah)
++    var nhull   = ich(npoints, true)
++    return invPermute(nhull, ah)
+   }
+ }
+-},{"./lib/intersect":91,"./lib/sweep":95,"typedarray-pool":458}],90:[function(require,module,exports){
+-'use strict'
+-
+-var DIMENSION   = 'd'
+-var AXIS        = 'ax'
+-var VISIT       = 'vv'
+-var FLIP        = 'fp'
++},{"affine-hull":25,"incremental-convex-hull":224}],83:[function(require,module,exports){
++module.exports = {
++  AFG: "afghan",
++  ALA: "\\b\\wland",
++  ALB: "albania",
++  DZA: "algeria",
++  ASM: "^(?=.*americ).*samoa",
++  AND: "andorra",
++  AGO: "angola",
++  AIA: "anguill?a",
++  ATA: "antarctica",
++  ATG: "antigua",
++  ARG: "argentin",
++  ARM: "armenia",
++  ABW: "^(?!.*bonaire).*\\baruba",
++  AUS: "australia",
++  AUT: "^(?!.*hungary).*austria|\\baustri.*\\bemp",
++  AZE: "azerbaijan",
++  BHS: "bahamas",
++  BHR: "bahrain",
++  BGD: "bangladesh|^(?=.*east).*paki?stan",
++  BRB: "barbados",
++  BLR: "belarus|byelo",
++  BEL: "^(?!.*luxem).*belgium",
++  BLZ: "belize|^(?=.*british).*honduras",
++  BEN: "benin|dahome",
++  BMU: "bermuda",
++  BTN: "bhutan",
++  BOL: "bolivia",
++  BES: "^(?=.*bonaire).*eustatius|^(?=.*carib).*netherlands|\\bbes.?islands",
++  BIH: "herzegovina|bosnia",
++  BWA: "botswana|bechuana",
++  BVT: "bouvet",
++  BRA: "brazil",
++  IOT: "british.?indian.?ocean",
++  BRN: "brunei",
++  BGR: "bulgaria",
++  BFA: "burkina|\\bfaso|upper.?volta",
++  BDI: "burundi",
++  KHM: "cambodia|kampuchea|khmer",
++  CMR: "cameroon",
++  CAN: "canada",
++  CPV: "verde",
++  CYM: "cayman",
++  CAF: "\\bcentral.african.republic",
++  TCD: "\\bchad",
++  CHL: "\\bchile",
++  CHN: "^(?!.*\\bmac)(?!.*\\bhong)(?!.*\\btai)(?!.*\\brep).*china|^(?=.*peo)(?=.*rep).*china",
++  CXR: "christmas",
++  CCK: "\\bcocos|keeling",
++  COL: "colombia",
++  COM: "comoro",
++  COD: "\\bdem.*congo|congo.*\\bdem|congo.*\\bdr|\\bdr.*congo|belgian.?congo|congo.?free.?state|kinshasa|zaire|l.opoldville|drc|droc|rdc",
++  COG: "^(?!.*\\bdem)(?!.*\\bdr)(?!.*kinshasa)(?!.*zaire)(?!.*belg)(?!.*l.opoldville)(?!.*free).*\\bcongo",
++  COK: "\\bcook",
++  CRI: "costa.?rica",
++  CIV: "ivoire|ivory",
++  HRV: "croatia",
++  CUB: "\\bcuba",
++  CUW: "^(?!.*bonaire).*\\bcura(c|ç)ao",
++  CYP: "cyprus",
++  CZE: "^(?=.*rep).*czech|czechia|bohemia",
++  CSK: "czechoslovakia",
++  DNK: "denmark",
++  DJI: "djibouti",
++  DMA: "dominica(?!n)",
++  DOM: "dominican.rep",
++  ECU: "ecuador",
++  EGY: "egypt",
++  SLV: "el.?salvador",
++  GNQ: "guine.*eq|eq.*guine|^(?=.*span).*guinea",
++  ERI: "eritrea",
++  EST: "estonia",
++  ETH: "ethiopia|abyssinia",
++  FLK: "falkland|malvinas",
++  FRO: "faroe|faeroe",
++  FJI: "fiji",
++  FIN: "finland",
++  FRA: "^(?!.*\\bdep)(?!.*martinique).*france|french.?republic|\\bgaul",
++  GUF: "^(?=.*french).*guiana",
++  PYF: "french.?polynesia|tahiti",
++  ATF: "french.?southern",
++  GAB: "gabon",
++  GMB: "gambia",
++  GEO: "^(?!.*south).*georgia",
++  DDR: "german.?democratic.?republic|democratic.?republic.*germany|east.germany",
++  DEU: "^(?!.*east).*germany|^(?=.*\\bfed.*\\brep).*german",
++  GHA: "ghana|gold.?coast",
++  GIB: "gibraltar",
++  GRC: "greece|hellenic|hellas",
++  GRL: "greenland",
++  GRD: "grenada",
++  GLP: "guadeloupe",
++  GUM: "\\bguam",
++  GTM: "guatemala",
++  GGY: "guernsey",
++  GIN: "^(?!.*eq)(?!.*span)(?!.*bissau)(?!.*portu)(?!.*new).*guinea",
++  GNB: "bissau|^(?=.*portu).*guinea",
++  GUY: "guyana|british.?guiana",
++  HTI: "haiti",
++  HMD: "heard.*mcdonald",
++  VAT: "holy.?see|vatican|papal.?st",
++  HND: "^(?!.*brit).*honduras",
++  HKG: "hong.?kong",
++  HUN: "^(?!.*austr).*hungary",
++  ISL: "iceland",
++  IND: "india(?!.*ocea)",
++  IDN: "indonesia",
++  IRN: "\\biran|persia",
++  IRQ: "\\biraq|mesopotamia",
++  IRL: "ireland",
++  IMN: "^(?=.*isle).*\\bman",
++  ISR: "israel",
++  ITA: "italy",
++  JAM: "jamaica",
++  JPN: "japan",
++  JEY: "jersey",
++  JOR: "jordan",
++  KAZ: "kazak",
++  KEN: "kenya|british.?east.?africa|east.?africa.?prot",
++  KIR: "kiribati",
++  PRK: "^(?=.*democrat).*\\bkorea|^(?=.*people).*\\bkorea|^(?=.*north).*\\bkorea|dprk",
++  KOR: "^(?!.*democrat)(?!.*people)(?!.*north).*\\bkorea",
++  KWT: "kuwait",
++  KGZ: "kyrgyz|kirghiz",
++  LAO: "\\blaos?\\b",
++  LVA: "latvia",
++  LBN: "lebanon",
++  LSO: "lesotho|basuto",
++  LBR: "liberia",
++  LBY: "libya",
++  LIE: "liechtenstein",
++  LTU: "lithuania",
++  LUX: "^(?!.*belg).*luxem",
++  MAC: "maca(o|u)",
++  MKD: "macedonia|fyrom",
++  MDG: "madagascar|malagasy",
++  MWI: "malawi|nyasa",
++  MYS: "malaysia",
++  MDV: "maldive",
++  MLI: "\\bmali\\b",
++  MLT: "\\bmalta",
++  MHL: "marshall",
++  MTQ: "martinique",
++  MRT: "mauritania",
++  MUS: "mauritius",
++  MYT: "\\bmayotte",
++  MEX: "\\bmexic",
++  FSM: "micronesia",
++  MDA: "moldov|b(a|e)ssarabia",
++  MCO: "monaco",
++  MNG: "mongolia",
++  MNE: "^(?!.*serbia).*montenegro",
++  MSR: "montserrat",
++  MAR: "morocco|\\bmaroc",
++  MOZ: "mozambique",
++  MMR: "myanmar|burma",
++  NAM: "namibia",
++  NRU: "nauru",
++  NPL: "nepal",
++  NLD: "^(?!.*\\bant)(?!.*\\bcarib).*netherlands",
++  ANT: "^(?=.*\\bant).*(nether|dutch)",
++  NCL: "new.?caledonia",
++  NZL: "new.?zealand",
++  NIC: "nicaragua",
++  NER: "\\bniger(?!ia)",
++  NGA: "nigeria",
++  NIU: "niue",
++  NFK: "norfolk",
++  MNP: "mariana",
++  NOR: "norway",
++  OMN: "\\boman|trucial",
++  PAK: "^(?!.*east).*paki?stan",
++  PLW: "palau",
++  PSE: "palestin|\\bgaza|west.?bank",
++  PAN: "panama",
++  PNG: "papua|new.?guinea",
++  PRY: "paraguay",
++  PER: "peru",
++  PHL: "philippines",
++  PCN: "pitcairn",
++  POL: "poland",
++  PRT: "portugal",
++  PRI: "puerto.?rico",
++  QAT: "qatar",
++  REU: "r(e|é)union",
++  ROU: "r(o|u|ou)mania",
++  RUS: "\\brussia|soviet.?union|u\\.?s\\.?s\\.?r|socialist.?republics",
++  RWA: "rwanda",
++  BLM: "barth(e|é)lemy",
++  SHN: "helena",
++  KNA: "kitts|\\bnevis",
++  LCA: "\\blucia",
++  MAF: "^(?=.*collectivity).*martin|^(?=.*france).*martin(?!ique)|^(?=.*french).*martin(?!ique)",
++  SPM: "miquelon",
++  VCT: "vincent",
++  WSM: "^(?!.*amer).*samoa",
++  SMR: "san.?marino",
++  STP: "\\bs(a|ã)o.?tom(e|é)",
++  SAU: "\\bsa\\w*.?arabia",
++  SEN: "senegal",
++  SRB: "^(?!.*monte).*serbia",
++  SYC: "seychell",
++  SLE: "sierra",
++  SGP: "singapore",
++  SXM: "^(?!.*martin)(?!.*saba).*maarten",
++  SVK: "^(?!.*cze).*slovak",
++  SVN: "slovenia",
++  SLB: "solomon",
++  SOM: "somali",
++  ZAF: "\\bs\\w*.?africa",
++  SGS: "south.?georgia|sandwich",
++  SSD: "\\bs\\w*.?sudan",
++  ESP: "spain",
++  LKA: "sri.?lanka|ceylon",
++  SDN: "^(?!.*\\bs(?!u)).*sudan",
++  SUR: "surinam|dutch.?guiana",
++  SJM: "svalbard",
++  SWZ: "swaziland",
++  SWE: "sweden",
++  CHE: "switz|swiss",
++  SYR: "syria",
++  TWN: "taiwan|taipei|formosa|^(?!.*peo)(?=.*rep).*china",
++  TJK: "tajik",
++  TZA: "tanzania",
++  THA: "thailand|\\bsiam",
++  TLS: "^(?=.*leste).*timor|^(?=.*east).*timor",
++  TGO: "togo",
++  TKL: "tokelau",
++  TON: "tonga",
++  TTO: "trinidad|tobago",
++  TUN: "tunisia",
++  TUR: "turkey",
++  TKM: "turkmen",
++  TCA: "turks",
++  TUV: "tuvalu",
++  UGA: "uganda",
++  UKR: "ukrain",
++  ARE: "emirates|^u\\.?a\\.?e\\.?$|united.?arab.?em",
++  GBR: "united.?kingdom|britain|^u\\.?k\\.?$",
++  USA: "united.?states|\\bu\\.?s\\.?a\\.?\\b|\\bu\\.?s\\.?\\b(?!.*islands)",
++  UMI: "minor.?outlying.?is",
++  URY: "uruguay",
++  UZB: "uzbek",
++  VUT: "vanuatu|new.?hebrides",
++  VEN: "venezuela",
++  VNM: "^(?!.*republic).*viet.?nam|^(?=.*socialist).*viet.?nam",
++  VGB: "^(?=.*\\bu\\.?\\s?k).*virgin|^(?=.*brit).*virgin|^(?=.*kingdom).*virgin",
++  VIR: "^(?=.*\\bu\\.?\\s?s).*virgin|^(?=.*states).*virgin",
++  WLF: "futuna|wallis",
++  ESH: "western.sahara",
++  YEM: "^(?!.*arab)(?!.*north)(?!.*sana)(?!.*peo)(?!.*dem)(?!.*south)(?!.*aden)(?!.*\\bp\\.?d\\.?r).*yemen",
++  YMD: "^(?=.*peo).*yemen|^(?!.*rep)(?=.*dem).*yemen|^(?=.*south).*yemen|^(?=.*aden).*yemen|^(?=.*\\bp\\.?d\\.?r).*yemen",
++  YUG: "yugoslavia",
++  ZMB: "zambia|northern.?rhodesia",
++  EAZ: "zanzibar",
++  ZWE: "zimbabwe|^(?!.*northern).*rhodesia"
++};
+ 
+-var ELEM_SIZE   = 'es'
++},{}],84:[function(require,module,exports){
++// (c) Dean McNamee <dean@gmail.com>, 2012.
++//
++// https://github.com/deanm/css-color-parser-js
++//
++// Permission is hereby granted, free of charge, to any person obtaining a copy
++// of this software and associated documentation files (the "Software"), to
++// deal in the Software without restriction, including without limitation the
++// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
++// sell copies of the Software, and to permit persons to whom the Software is
++// furnished to do so, subject to the following conditions:
++//
++// The above copyright notice and this permission notice shall be included in
++// all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
++// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
++// IN THE SOFTWARE.
+ 
+-var RED_START   = 'rs'
+-var RED_END     = 're'
+-var RED_BOXES   = 'rb'
+-var RED_INDEX   = 'ri'
+-var RED_PTR     = 'rp'
++// http://www.w3.org/TR/css3-color/
++var kCSSColorTable = {
++  "transparent": [0,0,0,0], "aliceblue": [240,248,255,1],
++  "antiquewhite": [250,235,215,1], "aqua": [0,255,255,1],
++  "aquamarine": [127,255,212,1], "azure": [240,255,255,1],
++  "beige": [245,245,220,1], "bisque": [255,228,196,1],
++  "black": [0,0,0,1], "blanchedalmond": [255,235,205,1],
++  "blue": [0,0,255,1], "blueviolet": [138,43,226,1],
++  "brown": [165,42,42,1], "burlywood": [222,184,135,1],
++  "cadetblue": [95,158,160,1], "chartreuse": [127,255,0,1],
++  "chocolate": [210,105,30,1], "coral": [255,127,80,1],
++  "cornflowerblue": [100,149,237,1], "cornsilk": [255,248,220,1],
++  "crimson": [220,20,60,1], "cyan": [0,255,255,1],
++  "darkblue": [0,0,139,1], "darkcyan": [0,139,139,1],
++  "darkgoldenrod": [184,134,11,1], "darkgray": [169,169,169,1],
++  "darkgreen": [0,100,0,1], "darkgrey": [169,169,169,1],
++  "darkkhaki": [189,183,107,1], "darkmagenta": [139,0,139,1],
++  "darkolivegreen": [85,107,47,1], "darkorange": [255,140,0,1],
++  "darkorchid": [153,50,204,1], "darkred": [139,0,0,1],
++  "darksalmon": [233,150,122,1], "darkseagreen": [143,188,143,1],
++  "darkslateblue": [72,61,139,1], "darkslategray": [47,79,79,1],
++  "darkslategrey": [47,79,79,1], "darkturquoise": [0,206,209,1],
++  "darkviolet": [148,0,211,1], "deeppink": [255,20,147,1],
++  "deepskyblue": [0,191,255,1], "dimgray": [105,105,105,1],
++  "dimgrey": [105,105,105,1], "dodgerblue": [30,144,255,1],
++  "firebrick": [178,34,34,1], "floralwhite": [255,250,240,1],
++  "forestgreen": [34,139,34,1], "fuchsia": [255,0,255,1],
++  "gainsboro": [220,220,220,1], "ghostwhite": [248,248,255,1],
++  "gold": [255,215,0,1], "goldenrod": [218,165,32,1],
++  "gray": [128,128,128,1], "green": [0,128,0,1],
++  "greenyellow": [173,255,47,1], "grey": [128,128,128,1],
++  "honeydew": [240,255,240,1], "hotpink": [255,105,180,1],
++  "indianred": [205,92,92,1], "indigo": [75,0,130,1],
++  "ivory": [255,255,240,1], "khaki": [240,230,140,1],
++  "lavender": [230,230,250,1], "lavenderblush": [255,240,245,1],
++  "lawngreen": [124,252,0,1], "lemonchiffon": [255,250,205,1],
++  "lightblue": [173,216,230,1], "lightcoral": [240,128,128,1],
++  "lightcyan": [224,255,255,1], "lightgoldenrodyellow": [250,250,210,1],
++  "lightgray": [211,211,211,1], "lightgreen": [144,238,144,1],
++  "lightgrey": [211,211,211,1], "lightpink": [255,182,193,1],
++  "lightsalmon": [255,160,122,1], "lightseagreen": [32,178,170,1],
++  "lightskyblue": [135,206,250,1], "lightslategray": [119,136,153,1],
++  "lightslategrey": [119,136,153,1], "lightsteelblue": [176,196,222,1],
++  "lightyellow": [255,255,224,1], "lime": [0,255,0,1],
++  "limegreen": [50,205,50,1], "linen": [250,240,230,1],
++  "magenta": [255,0,255,1], "maroon": [128,0,0,1],
++  "mediumaquamarine": [102,205,170,1], "mediumblue": [0,0,205,1],
++  "mediumorchid": [186,85,211,1], "mediumpurple": [147,112,219,1],
++  "mediumseagreen": [60,179,113,1], "mediumslateblue": [123,104,238,1],
++  "mediumspringgreen": [0,250,154,1], "mediumturquoise": [72,209,204,1],
++  "mediumvioletred": [199,21,133,1], "midnightblue": [25,25,112,1],
++  "mintcream": [245,255,250,1], "mistyrose": [255,228,225,1],
++  "moccasin": [255,228,181,1], "navajowhite": [255,222,173,1],
++  "navy": [0,0,128,1], "oldlace": [253,245,230,1],
++  "olive": [128,128,0,1], "olivedrab": [107,142,35,1],
++  "orange": [255,165,0,1], "orangered": [255,69,0,1],
++  "orchid": [218,112,214,1], "palegoldenrod": [238,232,170,1],
++  "palegreen": [152,251,152,1], "paleturquoise": [175,238,238,1],
++  "palevioletred": [219,112,147,1], "papayawhip": [255,239,213,1],
++  "peachpuff": [255,218,185,1], "peru": [205,133,63,1],
++  "pink": [255,192,203,1], "plum": [221,160,221,1],
++  "powderblue": [176,224,230,1], "purple": [128,0,128,1],
++  "rebeccapurple": [102,51,153,1],
++  "red": [255,0,0,1], "rosybrown": [188,143,143,1],
++  "royalblue": [65,105,225,1], "saddlebrown": [139,69,19,1],
++  "salmon": [250,128,114,1], "sandybrown": [244,164,96,1],
++  "seagreen": [46,139,87,1], "seashell": [255,245,238,1],
++  "sienna": [160,82,45,1], "silver": [192,192,192,1],
++  "skyblue": [135,206,235,1], "slateblue": [106,90,205,1],
++  "slategray": [112,128,144,1], "slategrey": [112,128,144,1],
++  "snow": [255,250,250,1], "springgreen": [0,255,127,1],
++  "steelblue": [70,130,180,1], "tan": [210,180,140,1],
++  "teal": [0,128,128,1], "thistle": [216,191,216,1],
++  "tomato": [255,99,71,1], "turquoise": [64,224,208,1],
++  "violet": [238,130,238,1], "wheat": [245,222,179,1],
++  "white": [255,255,255,1], "whitesmoke": [245,245,245,1],
++  "yellow": [255,255,0,1], "yellowgreen": [154,205,50,1]}
+ 
+-var BLUE_START  = 'bs'
+-var BLUE_END    = 'be'
+-var BLUE_BOXES  = 'bb'
+-var BLUE_INDEX  = 'bi'
+-var BLUE_PTR    = 'bp'
++function clamp_css_byte(i) {  // Clamp to integer 0 .. 255.
++  i = Math.round(i);  // Seems to be what Chrome does (vs truncation).
++  return i < 0 ? 0 : i > 255 ? 255 : i;
++}
+ 
+-var RETVAL      = 'rv'
++function clamp_css_float(f) {  // Clamp to float 0.0 .. 1.0.
++  return f < 0 ? 0 : f > 1 ? 1 : f;
++}
+ 
+-var INNER_LABEL = 'Q'
++function parse_css_int(str) {  // int or percentage.
++  if (str[str.length - 1] === '%')
++    return clamp_css_byte(parseFloat(str) / 100 * 255);
++  return clamp_css_byte(parseInt(str));
++}
+ 
+-var ARGS = [
+-  DIMENSION,
+-  AXIS,
+-  VISIT,
+-  RED_START,
+-  RED_END,
+-  RED_BOXES,
+-  RED_INDEX,
+-  BLUE_START,
+-  BLUE_END,
+-  BLUE_BOXES,
+-  BLUE_INDEX
+-]
++function parse_css_float(str) {  // float or percentage.
++  if (str[str.length - 1] === '%')
++    return clamp_css_float(parseFloat(str) / 100);
++  return clamp_css_float(parseFloat(str));
++}
+ 
+-function generateBruteForce(redMajor, flip, full) {
+-  var funcName = 'bruteForce' + 
+-    (redMajor ? 'Red' : 'Blue') + 
+-    (flip ? 'Flip' : '') +
+-    (full ? 'Full' : '')
++function css_hue_to_rgb(m1, m2, h) {
++  if (h < 0) h += 1;
++  else if (h > 1) h -= 1;
+ 
+-  var code = ['function ', funcName, '(', ARGS.join(), '){',
+-    'var ', ELEM_SIZE, '=2*', DIMENSION, ';']
++  if (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
++  if (h * 2 < 1) return m2;
++  if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6;
++  return m1;
++}
+ 
+-  var redLoop = 
+-    'for(var i=' + RED_START + ',' + RED_PTR + '=' + ELEM_SIZE + '*' + RED_START + ';' +
+-        'i<' + RED_END +';' +
+-        '++i,' + RED_PTR + '+=' + ELEM_SIZE + '){' +
+-        'var x0=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '],' +
+-            'x1=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '+' + DIMENSION + '],' +
+-            'xi=' + RED_INDEX + '[i];'
++function parseCSSColor(css_str) {
++  // Remove all whitespace, not compliant, but should just be more accepting.
++  var str = css_str.replace(/ /g, '').toLowerCase();
+ 
+-  var blueLoop = 
+-    'for(var j=' + BLUE_START + ',' + BLUE_PTR + '=' + ELEM_SIZE + '*' + BLUE_START + ';' +
+-        'j<' + BLUE_END + ';' +
+-        '++j,' + BLUE_PTR + '+=' + ELEM_SIZE + '){' +
+-        'var y0=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '],' +
+-            (full ? 'y1=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '+' + DIMENSION + '],' : '') +
+-            'yi=' + BLUE_INDEX + '[j];'
++  // Color keywords (and transparent) lookup.
++  if (str in kCSSColorTable) return kCSSColorTable[str].slice();  // dup.
+ 
+-  if(redMajor) {
+-    code.push(redLoop, INNER_LABEL, ':', blueLoop)
+-  } else {
+-    code.push(blueLoop, INNER_LABEL, ':', redLoop)
+-  }
++  // #abc and #abc123 syntax.
++  if (str[0] === '#') {
++    if (str.length === 4) {
++      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
++      if (!(iv >= 0 && iv <= 0xfff)) return null;  // Covers NaN.
++      return [((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8),
++              (iv & 0xf0) | ((iv & 0xf0) >> 4),
++              (iv & 0xf) | ((iv & 0xf) << 4),
++              1];
++    } else if (str.length === 7) {
++      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
++      if (!(iv >= 0 && iv <= 0xffffff)) return null;  // Covers NaN.
++      return [(iv & 0xff0000) >> 16,
++              (iv & 0xff00) >> 8,
++              iv & 0xff,
++              1];
++    }
+ 
+-  if(full) {
+-    code.push('if(y1<x0||x1<y0)continue;')
+-  } else if(flip) {
+-    code.push('if(y0<=x0||x1<y0)continue;')
+-  } else {
+-    code.push('if(y0<x0||x1<y0)continue;')
++    return null;
+   }
+ 
+-  code.push('for(var k='+AXIS+'+1;k<'+DIMENSION+';++k){'+
+-    'var r0='+RED_BOXES+'[k+'+RED_PTR+'],'+
+-        'r1='+RED_BOXES+'[k+'+DIMENSION+'+'+RED_PTR+'],'+
+-        'b0='+BLUE_BOXES+'[k+'+BLUE_PTR+'],'+
+-        'b1='+BLUE_BOXES+'[k+'+DIMENSION+'+'+BLUE_PTR+'];'+
+-      'if(r1<b0||b1<r0)continue ' + INNER_LABEL + ';}' +
+-      'var ' + RETVAL + '=' + VISIT + '(')
+-
+-  if(flip) {
+-    code.push('yi,xi')
+-  } else {
+-    code.push('xi,yi')
+-  }
+-
+-  code.push(');if(' + RETVAL + '!==void 0)return ' + RETVAL + ';}}}')
+-
+-  return {
+-    name: funcName, 
+-    code: code.join('')
+-  }
+-}
+-
+-function bruteForcePlanner(full) {
+-  var funcName = 'bruteForce' + (full ? 'Full' : 'Partial')
+-  var prefix = []
+-  var fargs = ARGS.slice()
+-  if(!full) {
+-    fargs.splice(3, 0, FLIP)
+-  }
+-
+-  var code = ['function ' + funcName + '(' + fargs.join() + '){']
+-
+-  function invoke(redMajor, flip) {
+-    var res = generateBruteForce(redMajor, flip, full)
+-    prefix.push(res.code)
+-    code.push('return ' + res.name + '(' + ARGS.join() + ');')
+-  }
+-
+-  code.push('if(' + RED_END + '-' + RED_START + '>' +
+-                    BLUE_END + '-' + BLUE_START + '){')
+-
+-  if(full) {
+-    invoke(true, false)
+-    code.push('}else{')
+-    invoke(false, false)
+-  } else {
+-    code.push('if(' + FLIP + '){')
+-    invoke(true, true)
+-    code.push('}else{')
+-    invoke(true, false)
+-    code.push('}}else{if(' + FLIP + '){')
+-    invoke(false, true)
+-    code.push('}else{')
+-    invoke(false, false)
+-    code.push('}')
+-  }
+-  code.push('}}return ' + funcName)
+-
+-  var codeStr = prefix.join('') + code.join('')
+-  var proc = new Function(codeStr)
+-  return proc()
+-}
+-
+-
+-exports.partial = bruteForcePlanner(false)
+-exports.full    = bruteForcePlanner(true)
+-},{}],91:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = boxIntersectIter
+-
+-var pool = require('typedarray-pool')
+-var bits = require('bit-twiddle')
+-var bruteForce = require('./brute')
+-var bruteForcePartial = bruteForce.partial
+-var bruteForceFull = bruteForce.full
+-var sweep = require('./sweep')
+-var findMedian = require('./median')
+-var genPartition = require('./partition')
+-
+-//Twiddle parameters
+-var BRUTE_FORCE_CUTOFF    = 128       //Cut off for brute force search
+-var SCAN_CUTOFF           = (1<<22)   //Cut off for two way scan
+-var SCAN_COMPLETE_CUTOFF  = (1<<22)  
+-
+-//Partition functions
+-var partitionInteriorContainsInterval = genPartition(
+-  '!(lo>=p0)&&!(p1>=hi)', 
+-  ['p0', 'p1'])
+-
+-var partitionStartEqual = genPartition(
+-  'lo===p0',
+-  ['p0'])
+-
+-var partitionStartLessThan = genPartition(
+-  'lo<p0',
+-  ['p0'])
+-
+-var partitionEndLessThanEqual = genPartition(
+-  'hi<=p0',
+-  ['p0'])
+-
+-var partitionContainsPoint = genPartition(
+-  'lo<=p0&&p0<=hi',
+-  ['p0'])
+-
+-var partitionContainsPointProper = genPartition(
+-  'lo<p0&&p0<=hi',
+-  ['p0'])
+-
+-//Frame size for iterative loop
+-var IFRAME_SIZE = 6
+-var DFRAME_SIZE = 2
+-
+-//Data for box statck
+-var INIT_CAPACITY = 1024
+-var BOX_ISTACK  = pool.mallocInt32(INIT_CAPACITY)
+-var BOX_DSTACK  = pool.mallocDouble(INIT_CAPACITY)
+-
+-//Initialize iterative loop queue
+-function iterInit(d, count) {
+-  var levels = (8 * bits.log2(count+1) * (d+1))|0
+-  var maxInts = bits.nextPow2(IFRAME_SIZE*levels)
+-  if(BOX_ISTACK.length < maxInts) {
+-    pool.free(BOX_ISTACK)
+-    BOX_ISTACK = pool.mallocInt32(maxInts)
+-  }
+-  var maxDoubles = bits.nextPow2(DFRAME_SIZE*levels)
+-  if(BOX_DSTACK < maxDoubles) {
+-    pool.free(BOX_DSTACK)
+-    BOX_DSTACK = pool.mallocDouble(maxDoubles)
++  var op = str.indexOf('('), ep = str.indexOf(')');
++  if (op !== -1 && ep + 1 === str.length) {
++    var fname = str.substr(0, op);
++    var params = str.substr(op+1, ep-(op+1)).split(',');
++    var alpha = 1;  // To allow case fallthrough.
++    switch (fname) {
++      case 'rgba':
++        if (params.length !== 4) return null;
++        alpha = parse_css_float(params.pop());
++        // Fall through.
++      case 'rgb':
++        if (params.length !== 3) return null;
++        return [parse_css_int(params[0]),
++                parse_css_int(params[1]),
++                parse_css_int(params[2]),
++                alpha];
++      case 'hsla':
++        if (params.length !== 4) return null;
++        alpha = parse_css_float(params.pop());
++        // Fall through.
++      case 'hsl':
++        if (params.length !== 3) return null;
++        var h = (((parseFloat(params[0]) % 360) + 360) % 360) / 360;  // 0 .. 1
++        // NOTE(deanm): According to the CSS spec s/l should only be
++        // percentages, but we don't bother and let float or percentage.
++        var s = parse_css_float(params[1]);
++        var l = parse_css_float(params[2]);
++        var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
++        var m1 = l * 2 - m2;
++        return [clamp_css_byte(css_hue_to_rgb(m1, m2, h+1/3) * 255),
++                clamp_css_byte(css_hue_to_rgb(m1, m2, h) * 255),
++                clamp_css_byte(css_hue_to_rgb(m1, m2, h-1/3) * 255),
++                alpha];
++      default:
++        return null;
++    }
+   }
+-}
+-
+-//Append item to queue
+-function iterPush(ptr,
+-  axis, 
+-  redStart, redEnd, 
+-  blueStart, blueEnd, 
+-  state, 
+-  lo, hi) {
+-
+-  var iptr = IFRAME_SIZE * ptr
+-  BOX_ISTACK[iptr]   = axis
+-  BOX_ISTACK[iptr+1] = redStart
+-  BOX_ISTACK[iptr+2] = redEnd
+-  BOX_ISTACK[iptr+3] = blueStart
+-  BOX_ISTACK[iptr+4] = blueEnd
+-  BOX_ISTACK[iptr+5] = state
+ 
+-  var dptr = DFRAME_SIZE * ptr
+-  BOX_DSTACK[dptr]   = lo
+-  BOX_DSTACK[dptr+1] = hi
++  return null;
+ }
+ 
+-//Special case:  Intersect single point with list of intervals
+-function onePointPartial(
+-  d, axis, visit, flip,
+-  redStart, redEnd, red, redIndex,
+-  blueOffset, blue, blueId) {
++try { exports.parseCSSColor = parseCSSColor } catch(e) { }
+ 
+-  var elemSize = 2 * d
+-  var bluePtr  = blueOffset * elemSize
+-  var blueX    = blue[bluePtr + axis]
++},{}],85:[function(require,module,exports){
++"use strict"
+ 
+-red_loop:
+-  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
+-    var r0 = red[redPtr+axis]
+-    var r1 = red[redPtr+axis+d]
+-    if(blueX < r0 || r1 < blueX) {
+-      continue
+-    }
+-    if(flip && blueX === r0) {
+-      continue
+-    }
+-    var redId = redIndex[i]
+-    for(var j=axis+1; j<d; ++j) {
+-      var r0 = red[redPtr+j]
+-      var r1 = red[redPtr+j+d]
+-      var b0 = blue[bluePtr+j]
+-      var b1 = blue[bluePtr+j+d]
+-      if(r1 < b0 || b1 < r0) {
+-        continue red_loop
+-      }
+-    }
+-    var retval
+-    if(flip) {
+-      retval = visit(blueId, redId)
+-    } else {
+-      retval = visit(redId, blueId)
++function dcubicHermite(p0, v0, p1, v1, t, f) {
++  var dh00 = 6*t*t-6*t,
++      dh10 = 3*t*t-4*t + 1,
++      dh01 = -6*t*t+6*t,
++      dh11 = 3*t*t-2*t
++  if(p0.length) {
++    if(!f) {
++      f = new Array(p0.length)
+     }
+-    if(retval !== void 0) {
+-      return retval
++    for(var i=p0.length-1; i>=0; --i) {
++      f[i] = dh00*p0[i] + dh10*v0[i] + dh01*p1[i] + dh11*v1[i]
+     }
++    return f
+   }
++  return dh00*p0 + dh10*v0 + dh01*p1[i] + dh11*v1
+ }
+ 
+-//Special case:  Intersect one point with list of intervals
+-function onePointFull(
+-  d, axis, visit,
+-  redStart, redEnd, red, redIndex,
+-  blueOffset, blue, blueId) {
+-
+-  var elemSize = 2 * d
+-  var bluePtr  = blueOffset * elemSize
+-  var blueX    = blue[bluePtr + axis]
+-
+-red_loop:
+-  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
+-    var redId = redIndex[i]
+-    if(redId === blueId) {
+-      continue
+-    }
+-    var r0 = red[redPtr+axis]
+-    var r1 = red[redPtr+axis+d]
+-    if(blueX < r0 || r1 < blueX) {
+-      continue
+-    }
+-    for(var j=axis+1; j<d; ++j) {
+-      var r0 = red[redPtr+j]
+-      var r1 = red[redPtr+j+d]
+-      var b0 = blue[bluePtr+j]
+-      var b1 = blue[bluePtr+j+d]
+-      if(r1 < b0 || b1 < r0) {
+-        continue red_loop
+-      }
++function cubicHermite(p0, v0, p1, v1, t, f) {
++  var ti  = (t-1), t2 = t*t, ti2 = ti*ti,
++      h00 = (1+2*t)*ti2,
++      h10 = t*ti2,
++      h01 = t2*(3-2*t),
++      h11 = t2*ti
++  if(p0.length) {
++    if(!f) {
++      f = new Array(p0.length)
+     }
+-    var retval = visit(redId, blueId)
+-    if(retval !== void 0) {
+-      return retval
++    for(var i=p0.length-1; i>=0; --i) {
++      f[i] = h00*p0[i] + h10*v0[i] + h01*p1[i] + h11*v1[i]
+     }
++    return f
+   }
++  return h00*p0 + h10*v0 + h01*p1 + h11*v1
+ }
+ 
+-//The main box intersection routine
+-function boxIntersectIter(
+-  d, visit, initFull,
+-  xSize, xBoxes, xIndex,
+-  ySize, yBoxes, yIndex) {
+-
+-  //Reserve memory for stack
+-  iterInit(d, xSize + ySize)
+-
+-  var top  = 0
+-  var elemSize = 2 * d
+-  var retval
+-
+-  iterPush(top++,
+-      0,
+-      0, xSize,
+-      0, ySize,
+-      initFull ? 16 : 0, 
+-      -Infinity, Infinity)
+-  if(!initFull) {
+-    iterPush(top++,
+-      0,
+-      0, ySize,
+-      0, xSize,
+-      1, 
+-      -Infinity, Infinity)
+-  }
+-
+-  while(top > 0) {
+-    top  -= 1
+-
+-    var iptr = top * IFRAME_SIZE
+-    var axis      = BOX_ISTACK[iptr]
+-    var redStart  = BOX_ISTACK[iptr+1]
+-    var redEnd    = BOX_ISTACK[iptr+2]
+-    var blueStart = BOX_ISTACK[iptr+3]
+-    var blueEnd   = BOX_ISTACK[iptr+4]
+-    var state     = BOX_ISTACK[iptr+5]
+-
+-    var dptr = top * DFRAME_SIZE
+-    var lo        = BOX_DSTACK[dptr]
+-    var hi        = BOX_DSTACK[dptr+1]
+-
+-    //Unpack state info
+-    var flip      = (state & 1)
+-    var full      = !!(state & 16)
+-
+-    //Unpack indices
+-    var red       = xBoxes
+-    var redIndex  = xIndex
+-    var blue      = yBoxes
+-    var blueIndex = yIndex
+-    if(flip) {
+-      red         = yBoxes
+-      redIndex    = yIndex
+-      blue        = xBoxes
+-      blueIndex   = xIndex
+-    }
+-
+-    if(state & 2) {
+-      redEnd = partitionStartLessThan(
+-        d, axis,
+-        redStart, redEnd, red, redIndex,
+-        hi)
+-      if(redStart >= redEnd) {
+-        continue
+-      }
+-    }
+-    if(state & 4) {
+-      redStart = partitionEndLessThanEqual(
+-        d, axis,
+-        redStart, redEnd, red, redIndex,
+-        lo)
+-      if(redStart >= redEnd) {
+-        continue
+-      }
+-    }
+-    
+-    var redCount  = redEnd  - redStart
+-    var blueCount = blueEnd - blueStart
+-
+-    if(full) {
+-      if(d * redCount * (redCount + blueCount) < SCAN_COMPLETE_CUTOFF) {
+-        retval = sweep.scanComplete(
+-          d, axis, visit, 
+-          redStart, redEnd, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      }
+-    } else {
+-      if(d * Math.min(redCount, blueCount) < BRUTE_FORCE_CUTOFF) {
+-        //If input small, then use brute force
+-        retval = bruteForcePartial(
+-            d, axis, visit, flip,
+-            redStart,  redEnd,  red,  redIndex,
+-            blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      } else if(d * redCount * blueCount < SCAN_CUTOFF) {
+-        //If input medium sized, then use sweep and prune
+-        retval = sweep.scanBipartite(
+-          d, axis, visit, flip, 
+-          redStart, redEnd, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      }
+-    }
+-    
+-    //First, find all red intervals whose interior contains (lo,hi)
+-    var red0 = partitionInteriorContainsInterval(
+-      d, axis, 
+-      redStart, redEnd, red, redIndex,
+-      lo, hi)
+-
+-    //Lower dimensional case
+-    if(redStart < red0) {
++module.exports = cubicHermite
++module.exports.derivative = dcubicHermite
++},{}],86:[function(require,module,exports){
++"use strict"
++
++var createThunk = require("./lib/thunk.js")
++
++function Procedure() {
++  this.argTypes = []
++  this.shimArgs = []
++  this.arrayArgs = []
++  this.arrayBlockIndices = []
++  this.scalarArgs = []
++  this.offsetArgs = []
++  this.offsetArgIndex = []
++  this.indexArgs = []
++  this.shapeArgs = []
++  this.funcName = ""
++  this.pre = null
++  this.body = null
++  this.post = null
++  this.debug = false
++}
++
++function compileCwise(user_args) {
++  //Create procedure
++  var proc = new Procedure()
++  
++  //Parse blocks
++  proc.pre    = user_args.pre
++  proc.body   = user_args.body
++  proc.post   = user_args.post
++
++  //Parse arguments
++  var proc_args = user_args.args.slice(0)
++  proc.argTypes = proc_args
++  for(var i=0; i<proc_args.length; ++i) {
++    var arg_type = proc_args[i]
++    if(arg_type === "array" || (typeof arg_type === "object" && arg_type.blockIndices)) {
++      proc.argTypes[i] = "array"
++      proc.arrayArgs.push(i)
++      proc.arrayBlockIndices.push(arg_type.blockIndices ? arg_type.blockIndices : 0)
++      proc.shimArgs.push("array" + i)
++      if(i < proc.pre.args.length && proc.pre.args[i].count>0) {
++        throw new Error("cwise: pre() block may not reference array args")
++      }
++      if(i < proc.post.args.length && proc.post.args[i].count>0) {
++        throw new Error("cwise: post() block may not reference array args")
++      }
++    } else if(arg_type === "scalar") {
++      proc.scalarArgs.push(i)
++      proc.shimArgs.push("scalar" + i)
++    } else if(arg_type === "index") {
++      proc.indexArgs.push(i)
++      if(i < proc.pre.args.length && proc.pre.args[i].count > 0) {
++        throw new Error("cwise: pre() block may not reference array index")
++      }
++      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
++        throw new Error("cwise: body() block may not write to array index")
++      }
++      if(i < proc.post.args.length && proc.post.args[i].count > 0) {
++        throw new Error("cwise: post() block may not reference array index")
++      }
++    } else if(arg_type === "shape") {
++      proc.shapeArgs.push(i)
++      if(i < proc.pre.args.length && proc.pre.args[i].lvalue) {
++        throw new Error("cwise: pre() block may not write to array shape")
++      }
++      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
++        throw new Error("cwise: body() block may not write to array shape")
++      }
++      if(i < proc.post.args.length && proc.post.args[i].lvalue) {
++        throw new Error("cwise: post() block may not write to array shape")
++      }
++    } else if(typeof arg_type === "object" && arg_type.offset) {
++      proc.argTypes[i] = "offset"
++      proc.offsetArgs.push({ array: arg_type.array, offset:arg_type.offset })
++      proc.offsetArgIndex.push(i)
++    } else {
++      throw new Error("cwise: Unknown argument type " + proc_args[i])
++    }
++  }
++  
++  //Make sure at least one array argument was specified
++  if(proc.arrayArgs.length <= 0) {
++    throw new Error("cwise: No array arguments specified")
++  }
++  
++  //Make sure arguments are correct
++  if(proc.pre.args.length > proc_args.length) {
++    throw new Error("cwise: Too many arguments in pre() block")
++  }
++  if(proc.body.args.length > proc_args.length) {
++    throw new Error("cwise: Too many arguments in body() block")
++  }
++  if(proc.post.args.length > proc_args.length) {
++    throw new Error("cwise: Too many arguments in post() block")
++  }
++
++  //Check debug flag
++  proc.debug = !!user_args.printCode || !!user_args.debug
++  
++  //Retrieve name
++  proc.funcName = user_args.funcName || "cwise"
++  
++  //Read in block size
++  proc.blockSize = user_args.blockSize || 64
++
++  return createThunk(proc)
++}
++
++module.exports = compileCwise
+ 
+-      if(d * (red0 - redStart) < BRUTE_FORCE_CUTOFF) {
+-        //Special case for small inputs: use brute force
+-        retval = bruteForceFull(
+-          d, axis+1, visit,
+-          redStart, red0, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      } else if(axis === d-2) {
+-        if(flip) {
+-          retval = sweep.sweepBipartite(
+-            d, visit,
+-            blueStart, blueEnd, blue, blueIndex,
+-            redStart, red0, red, redIndex)
+-        } else {
+-          retval = sweep.sweepBipartite(
+-            d, visit,
+-            redStart, red0, red, redIndex,
+-            blueStart, blueEnd, blue, blueIndex)
+-        }
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      } else {
+-        iterPush(top++,
+-          axis+1,
+-          redStart, red0,
+-          blueStart, blueEnd,
+-          flip,
+-          -Infinity, Infinity)
+-        iterPush(top++,
+-          axis+1,
+-          blueStart, blueEnd,
+-          redStart, red0,
+-          flip^1,
+-          -Infinity, Infinity)
+-      }
+-    }
+-
+-    //Divide and conquer phase
+-    if(red0 < redEnd) {
+-
+-      //Cut blue into 3 parts:
+-      //
+-      //  Points < mid point
+-      //  Points = mid point
+-      //  Points > mid point
+-      //
+-      var blue0 = findMedian(
+-        d, axis, 
+-        blueStart, blueEnd, blue, blueIndex)
+-      var mid = blue[elemSize * blue0 + axis]
+-      var blue1 = partitionStartEqual(
+-        d, axis,
+-        blue0, blueEnd, blue, blueIndex,
+-        mid)
+-
+-      //Right case
+-      if(blue1 < blueEnd) {
+-        iterPush(top++,
+-          axis,
+-          red0, redEnd,
+-          blue1, blueEnd,
+-          (flip|4) + (full ? 16 : 0),
+-          mid, hi)
+-      }
+-
+-      //Left case
+-      if(blueStart < blue0) {
+-        iterPush(top++,
+-          axis,
+-          red0, redEnd,
+-          blueStart, blue0,
+-          (flip|2) + (full ? 16 : 0),
+-          lo, mid)
+-      }
+-
+-      //Center case (the hard part)
+-      if(blue0 + 1 === blue1) {
+-        //Optimization: Range with exactly 1 point, use a brute force scan
+-        if(full) {
+-          retval = onePointFull(
+-            d, axis, visit,
+-            red0, redEnd, red, redIndex,
+-            blue0, blue, blueIndex[blue0])
+-        } else {
+-          retval = onePointPartial(
+-            d, axis, visit, flip,
+-            red0, redEnd, red, redIndex,
+-            blue0, blue, blueIndex[blue0])
+-        }
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      } else if(blue0 < blue1) {
+-        var red1
+-        if(full) {
+-          //If full intersection, need to handle special case
+-          red1 = partitionContainsPoint(
+-            d, axis,
+-            red0, redEnd, red, redIndex,
+-            mid)
+-          if(red0 < red1) {
+-            var redX = partitionStartEqual(
+-              d, axis,
+-              red0, red1, red, redIndex,
+-              mid)
+-            if(axis === d-2) {
+-              //Degenerate sweep intersection:
+-              //  [red0, redX] with [blue0, blue1]
+-              if(red0 < redX) {
+-                retval = sweep.sweepComplete(
+-                  d, visit,
+-                  red0, redX, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-                if(retval !== void 0) {
+-                  return retval
+-                }
+-              }
+-
+-              //Normal sweep intersection:
+-              //  [redX, red1] with [blue0, blue1]
+-              if(redX < red1) {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  redX, red1, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-                if(retval !== void 0) {
+-                  return retval
+-                }
+-              }
+-            } else {
+-              if(red0 < redX) {
+-                iterPush(top++,
+-                  axis+1,
+-                  red0, redX,
+-                  blue0, blue1,
+-                  16,
+-                  -Infinity, Infinity)
+-              }
+-              if(redX < red1) {
+-                iterPush(top++,
+-                  axis+1,
+-                  redX, red1,
+-                  blue0, blue1,
+-                  0,
+-                  -Infinity, Infinity)
+-                iterPush(top++,
+-                  axis+1,
+-                  blue0, blue1,
+-                  redX, red1,
+-                  1,
+-                  -Infinity, Infinity)
+-              }
+-            }
+-          }
+-        } else {
+-          if(flip) {
+-            red1 = partitionContainsPointProper(
+-              d, axis,
+-              red0, redEnd, red, redIndex,
+-              mid)
+-          } else {
+-            red1 = partitionContainsPoint(
+-              d, axis,
+-              red0, redEnd, red, redIndex,
+-              mid)
+-          }
+-          if(red0 < red1) {
+-            if(axis === d-2) {
+-              if(flip) {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  blue0, blue1, blue, blueIndex,
+-                  red0, red1, red, redIndex)
+-              } else {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  red0, red1, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-              }
+-            } else {
+-              iterPush(top++,
+-                axis+1,
+-                red0, red1,
+-                blue0, blue1,
+-                flip,
+-                -Infinity, Infinity)
+-              iterPush(top++,
+-                axis+1,
+-                blue0, blue1,
+-                red0, red1,
+-                flip^1,
+-                -Infinity, Infinity)
+-            }
+-          }
+-        }
+-      }
+-    }
+-  }
+-}
+-},{"./brute":90,"./median":92,"./partition":93,"./sweep":95,"bit-twiddle":51,"typedarray-pool":458}],92:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = findMedian
+-
+-var genPartition = require('./partition')
+-
+-var partitionStartLessThan = genPartition('lo<p0', ['p0'])
+-
+-var PARTITION_THRESHOLD = 8   //Cut off for using insertion sort in findMedian
+-
+-//Base case for median finding:  Use insertion sort
+-function insertionSort(d, axis, start, end, boxes, ids) {
+-  var elemSize = 2 * d
+-  var boxPtr = elemSize * (start+1) + axis
+-  for(var i=start+1; i<end; ++i, boxPtr+=elemSize) {
+-    var x = boxes[boxPtr]
+-    for(var j=i, ptr=elemSize*(i-1); 
+-        j>start && boxes[ptr+axis] > x; 
+-        --j, ptr-=elemSize) {
+-      //Swap
+-      var aPtr = ptr
+-      var bPtr = ptr+elemSize
+-      for(var k=0; k<elemSize; ++k, ++aPtr, ++bPtr) {
+-        var y = boxes[aPtr]
+-        boxes[aPtr] = boxes[bPtr]
+-        boxes[bPtr] = y
+-      }
+-      var tmp = ids[j]
+-      ids[j] = ids[j-1]
+-      ids[j-1] = tmp
+-    }
+-  }
+-}
+-
+-//Find median using quick select algorithm
+-//  takes O(n) time with high probability
+-function findMedian(d, axis, start, end, boxes, ids) {
+-  if(end <= start+1) {
+-    return start
+-  }
+-
+-  var lo       = start
+-  var hi       = end
+-  var mid      = ((end + start) >>> 1)
+-  var elemSize = 2*d
+-  var pivot    = mid
+-  var value    = boxes[elemSize*mid+axis]
+-  
+-  while(lo < hi) {
+-    if(hi - lo < PARTITION_THRESHOLD) {
+-      insertionSort(d, axis, lo, hi, boxes, ids)
+-      value = boxes[elemSize*mid+axis]
+-      break
+-    }
+-    
+-    //Select pivot using median-of-3
+-    var count  = hi - lo
+-    var pivot0 = (Math.random()*count+lo)|0
+-    var value0 = boxes[elemSize*pivot0 + axis]
+-    var pivot1 = (Math.random()*count+lo)|0
+-    var value1 = boxes[elemSize*pivot1 + axis]
+-    var pivot2 = (Math.random()*count+lo)|0
+-    var value2 = boxes[elemSize*pivot2 + axis]
+-    if(value0 <= value1) {
+-      if(value2 >= value1) {
+-        pivot = pivot1
+-        value = value1
+-      } else if(value0 >= value2) {
+-        pivot = pivot0
+-        value = value0
+-      } else {
+-        pivot = pivot2
+-        value = value2
+-      }
+-    } else {
+-      if(value1 >= value2) {
+-        pivot = pivot1
+-        value = value1
+-      } else if(value2 >= value0) {
+-        pivot = pivot0
+-        value = value0
+-      } else {
+-        pivot = pivot2
+-        value = value2
+-      }
+-    }
+-
+-    //Swap pivot to end of array
+-    var aPtr = elemSize * (hi-1)
+-    var bPtr = elemSize * pivot
+-    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
+-      var x = boxes[aPtr]
+-      boxes[aPtr] = boxes[bPtr]
+-      boxes[bPtr] = x
+-    }
+-    var y = ids[hi-1]
+-    ids[hi-1] = ids[pivot]
+-    ids[pivot] = y
+-
+-    //Partition using pivot
+-    pivot = partitionStartLessThan(
+-      d, axis, 
+-      lo, hi-1, boxes, ids,
+-      value)
+-
+-    //Swap pivot back
+-    var aPtr = elemSize * (hi-1)
+-    var bPtr = elemSize * pivot
+-    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
+-      var x = boxes[aPtr]
+-      boxes[aPtr] = boxes[bPtr]
+-      boxes[bPtr] = x
+-    }
+-    var y = ids[hi-1]
+-    ids[hi-1] = ids[pivot]
+-    ids[pivot] = y
+-
+-    //Swap pivot to last pivot
+-    if(mid < pivot) {
+-      hi = pivot-1
+-      while(lo < hi && 
+-        boxes[elemSize*(hi-1)+axis] === value) {
+-        hi -= 1
+-      }
+-      hi += 1
+-    } else if(pivot < mid) {
+-      lo = pivot + 1
+-      while(lo < hi &&
+-        boxes[elemSize*lo+axis] === value) {
+-        lo += 1
+-      }
+-    } else {
+-      break
+-    }
+-  }
+-
+-  //Make sure pivot is at start
+-  return partitionStartLessThan(
+-    d, axis, 
+-    start, mid, boxes, ids,
+-    boxes[elemSize*mid+axis])
+-}
+-},{"./partition":93}],93:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = genPartition
+-
+-var code = 'for(var j=2*a,k=j*c,l=k,m=c,n=b,o=a+b,p=c;d>p;++p,k+=j){var _;if($)if(m===p)m+=1,l+=j;else{for(var s=0;j>s;++s){var t=e[k+s];e[k+s]=e[l],e[l++]=t}var u=f[p];f[p]=f[m],f[m++]=u}}return m'
+-
+-function genPartition(predicate, args) {
+-  var fargs ='abcdef'.split('').concat(args)
+-  var reads = []
+-  if(predicate.indexOf('lo') >= 0) {
+-    reads.push('lo=e[k+n]')
+-  }
+-  if(predicate.indexOf('hi') >= 0) {
+-    reads.push('hi=e[k+o]')
+-  }
+-  fargs.push(
+-    code.replace('_', reads.join())
+-        .replace('$', predicate))
+-  return Function.apply(void 0, fargs)
+-}
+-},{}],94:[function(require,module,exports){
+-'use strict';
+-
+-//This code is extracted from ndarray-sort
+-//It is inlined here as a temporary workaround
+-
+-module.exports = wrapper;
+-
+-var INSERT_SORT_CUTOFF = 32
+-
+-function wrapper(data, n0) {
+-  if (n0 <= 4*INSERT_SORT_CUTOFF) {
+-    insertionSort(0, n0 - 1, data);
+-  } else {
+-    quickSort(0, n0 - 1, data);
+-  }
+-}
+-
+-function insertionSort(left, right, data) {
+-  var ptr = 2*(left+1)
+-  for(var i=left+1; i<=right; ++i) {
+-    var a = data[ptr++]
+-    var b = data[ptr++]
+-    var j = i
+-    var jptr = ptr-2
+-    while(j-- > left) {
+-      var x = data[jptr-2]
+-      var y = data[jptr-1]
+-      if(x < a) {
+-        break
+-      } else if(x === a && y < b) {
+-        break
+-      }
+-      data[jptr]   = x
+-      data[jptr+1] = y
+-      jptr -= 2
+-    }
+-    data[jptr]   = a
+-    data[jptr+1] = b
+-  }
+-}
+-
+-function swap(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  var x = data[i]
+-  var y = data[i+1]
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-  data[j] = x
+-  data[j+1] = y
+-}
+-
+-function move(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-}
+-
+-function rotate(i, j, k, data) {
+-  i *= 2
+-  j *= 2
+-  k *= 2
+-  var x = data[i]
+-  var y = data[i+1]
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-  data[j] = data[k]
+-  data[j+1] = data[k+1]
+-  data[k] = x
+-  data[k+1] = y
+-}
+-
+-function shufflePivot(i, j, px, py, data) {
+-  i *= 2
+-  j *= 2
+-  data[i] = data[j]
+-  data[j] = px
+-  data[i+1] = data[j+1]
+-  data[j+1] = py
+-}
+-
+-function compare(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  var x = data[i],
+-      y = data[j]
+-  if(x < y) {
+-    return false
+-  } else if(x === y) {
+-    return data[i+1] > data[j+1]
+-  }
+-  return true
+-}
+-
+-function comparePivot(i, y, b, data) {
+-  i *= 2
+-  var x = data[i]
+-  if(x < y) {
+-    return true
+-  } else if(x === y) {
+-    return data[i+1] < b
+-  }
+-  return false
+-}
+-
+-function quickSort(left, right, data) {
+-  var sixth = (right - left + 1) / 6 | 0, 
+-      index1 = left + sixth, 
+-      index5 = right - sixth, 
+-      index3 = left + right >> 1, 
+-      index2 = index3 - sixth, 
+-      index4 = index3 + sixth, 
+-      el1 = index1, 
+-      el2 = index2, 
+-      el3 = index3, 
+-      el4 = index4, 
+-      el5 = index5, 
+-      less = left + 1, 
+-      great = right - 1, 
+-      tmp = 0
+-  if(compare(el1, el2, data)) {
+-    tmp = el1
+-    el1 = el2
+-    el2 = tmp
+-  }
+-  if(compare(el4, el5, data)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el1, el3, data)) {
+-    tmp = el1
+-    el1 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el2, el3, data)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el1, el4, data)) {
+-    tmp = el1
+-    el1 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el3, el4, data)) {
+-    tmp = el3
+-    el3 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el2, el5, data)) {
+-    tmp = el2
+-    el2 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el2, el3, data)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el4, el5, data)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
+-
+-  var pivot1X = data[2*el2]
+-  var pivot1Y = data[2*el2+1]
+-  var pivot2X = data[2*el4]
+-  var pivot2Y = data[2*el4+1]
+-
+-  var ptr0 = 2 * el1;
+-  var ptr2 = 2 * el3;
+-  var ptr4 = 2 * el5;
+-  var ptr5 = 2 * index1;
+-  var ptr6 = 2 * index3;
+-  var ptr7 = 2 * index5;
+-  for (var i1 = 0; i1 < 2; ++i1) {
+-    var x = data[ptr0+i1];
+-    var y = data[ptr2+i1];
+-    var z = data[ptr4+i1];
+-    data[ptr5+i1] = x;
+-    data[ptr6+i1] = y;
+-    data[ptr7+i1] = z;
+-  }
+-
+-  move(index2, left, data)
+-  move(index4, right, data)
+-  for (var k = less; k <= great; ++k) {
+-    if (comparePivot(k, pivot1X, pivot1Y, data)) {
+-      if (k !== less) {
+-        swap(k, less, data)
+-      }
+-      ++less;
+-    } else {
+-      if (!comparePivot(k, pivot2X, pivot2Y, data)) {
+-        while (true) {
+-          if (!comparePivot(great, pivot2X, pivot2Y, data)) {
+-            if (--great < k) {
+-              break;
+-            }
+-            continue;
+-          } else {
+-            if (comparePivot(great, pivot1X, pivot1Y, data)) {
+-              rotate(k, less, great, data)
+-              ++less;
+-              --great;
+-            } else {
+-              swap(k, great, data)
+-              --great;
+-            }
+-            break;
+-          }
+-        }
+-      }
+-    }
+-  }
+-  shufflePivot(left, less-1, pivot1X, pivot1Y, data)
+-  shufflePivot(right, great+1, pivot2X, pivot2Y, data)
+-  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
+-    insertionSort(left, less - 2, data);
+-  } else {
+-    quickSort(left, less - 2, data);
+-  }
+-  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
+-    insertionSort(great + 2, right, data);
+-  } else {
+-    quickSort(great + 2, right, data);
+-  }
+-  if (great - less <= INSERT_SORT_CUTOFF) {
+-    insertionSort(less, great, data);
+-  } else {
+-    quickSort(less, great, data);
+-  }
+-}
+-},{}],95:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = {
+-  init:           sqInit,
+-  sweepBipartite: sweepBipartite,
+-  sweepComplete:  sweepComplete,
+-  scanBipartite:  scanBipartite,
+-  scanComplete:   scanComplete
+-}
+-
+-var pool  = require('typedarray-pool')
+-var bits  = require('bit-twiddle')
+-var isort = require('./sort')
+-
+-//Flag for blue
+-var BLUE_FLAG = (1<<28)
+-
+-//1D sweep event queue stuff (use pool to save space)
+-var INIT_CAPACITY      = 1024
+-var RED_SWEEP_QUEUE    = pool.mallocInt32(INIT_CAPACITY)
+-var RED_SWEEP_INDEX    = pool.mallocInt32(INIT_CAPACITY)
+-var BLUE_SWEEP_QUEUE   = pool.mallocInt32(INIT_CAPACITY)
+-var BLUE_SWEEP_INDEX   = pool.mallocInt32(INIT_CAPACITY)
+-var COMMON_SWEEP_QUEUE = pool.mallocInt32(INIT_CAPACITY)
+-var COMMON_SWEEP_INDEX = pool.mallocInt32(INIT_CAPACITY)
+-var SWEEP_EVENTS       = pool.mallocDouble(INIT_CAPACITY * 8)
+-
+-//Reserves memory for the 1D sweep data structures
+-function sqInit(count) {
+-  var rcount = bits.nextPow2(count)
+-  if(RED_SWEEP_QUEUE.length < rcount) {
+-    pool.free(RED_SWEEP_QUEUE)
+-    RED_SWEEP_QUEUE = pool.mallocInt32(rcount)
+-  }
+-  if(RED_SWEEP_INDEX.length < rcount) {
+-    pool.free(RED_SWEEP_INDEX)
+-    RED_SWEEP_INDEX = pool.mallocInt32(rcount)
+-  }
+-  if(BLUE_SWEEP_QUEUE.length < rcount) {
+-    pool.free(BLUE_SWEEP_QUEUE)
+-    BLUE_SWEEP_QUEUE = pool.mallocInt32(rcount)
+-  }
+-  if(BLUE_SWEEP_INDEX.length < rcount) {
+-    pool.free(BLUE_SWEEP_INDEX)
+-    BLUE_SWEEP_INDEX = pool.mallocInt32(rcount)
+-  }
+-  if(COMMON_SWEEP_QUEUE.length < rcount) {
+-    pool.free(COMMON_SWEEP_QUEUE)
+-    COMMON_SWEEP_QUEUE = pool.mallocInt32(rcount)
+-  }
+-  if(COMMON_SWEEP_INDEX.length < rcount) {
+-    pool.free(COMMON_SWEEP_INDEX)
+-    COMMON_SWEEP_INDEX = pool.mallocInt32(rcount)
+-  }
+-  var eventLength = 8 * rcount
+-  if(SWEEP_EVENTS.length < eventLength) {
+-    pool.free(SWEEP_EVENTS)
+-    SWEEP_EVENTS = pool.mallocDouble(eventLength)
+-  }
+-}
+-
+-//Remove an item from the active queue in O(1)
+-function sqPop(queue, index, count, item) {
+-  var idx = index[item]
+-  var top = queue[count-1]
+-  queue[idx] = top
+-  index[top] = idx
+-}
+-
+-//Insert an item into the active queue in O(1)
+-function sqPush(queue, index, count, item) {
+-  queue[count] = item
+-  index[item]  = count
+-}
+-
+-//Recursion base case: use 1D sweep algorithm
+-function sweepBipartite(
+-    d, visit,
+-    redStart,  redEnd, red, redIndex,
+-    blueStart, blueEnd, blue, blueIndex) {
+-
+-  //store events as pairs [coordinate, idx]
+-  //
+-  //  red create:  -(idx+1)
+-  //  red destroy: idx
+-  //  blue create: -(idx+BLUE_FLAG)
+-  //  blue destroy: idx+BLUE_FLAG
+-  //
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = d-1
+-  var iend     = elemSize-1
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = redIndex[i]
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -(idx+1)
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = blueIndex[i]+BLUE_FLAG
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive  = 0
+-  var blueActive = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e >= BLUE_FLAG) {
+-      //blue destroy event
+-      e = (e-BLUE_FLAG)|0
+-      sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, e)
+-    } else if(e >= 0) {
+-      //red destroy event
+-      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e)
+-    } else if(e <= -BLUE_FLAG) {
+-      //blue create event
+-      e = (-e-BLUE_FLAG)|0
+-      for(var j=0; j<redActive; ++j) {
+-        var retval = visit(RED_SWEEP_QUEUE[j], e)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      }
+-      sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, e)
+-    } else {
+-      //red create event
+-      e = (-e-1)|0
+-      for(var j=0; j<blueActive; ++j) {
+-        var retval = visit(e, BLUE_SWEEP_QUEUE[j])
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      }
+-      sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, e)
+-    }
+-  }
+-}
+-
+-//Complete sweep
+-function sweepComplete(d, visit, 
+-  redStart, redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = d-1
+-  var iend     = elemSize-1
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = (redIndex[i]+1)<<1
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = (blueIndex[i]+1)<<1
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = (-idx)|1
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx|1
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  var blueActive   = 0
+-  var commonActive = 0
+-  for(var i=0; i<n; ++i) {
+-    var e     = SWEEP_EVENTS[2*i+1]|0
+-    var color = e&1
+-    if(i < n-1 && (e>>1) === (SWEEP_EVENTS[2*i+3]>>1)) {
+-      color = 2
+-      i += 1
+-    }
+-    
+-    if(e < 0) {
+-      //Create event
+-      var id = -(e>>1) - 1
+-
+-      //Intersect with common
+-      for(var j=0; j<commonActive; ++j) {
+-        var retval = visit(COMMON_SWEEP_QUEUE[j], id)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      }
+-
+-      if(color !== 0) {
+-        //Intersect with red
+-        for(var j=0; j<redActive; ++j) {
+-          var retval = visit(RED_SWEEP_QUEUE[j], id)
+-          if(retval !== void 0) {
+-            return retval
+-          }
+-        }
+-      }
+-
+-      if(color !== 1) {
+-        //Intersect with blue
+-        for(var j=0; j<blueActive; ++j) {
+-          var retval = visit(BLUE_SWEEP_QUEUE[j], id)
+-          if(retval !== void 0) {
+-            return retval
+-          }
+-        }
+-      }
+-
+-      if(color === 0) {
+-        //Red
+-        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, id)
+-      } else if(color === 1) {
+-        //Blue
+-        sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, id)
+-      } else if(color === 2) {
+-        //Both
+-        sqPush(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive++, id)
+-      }
+-    } else {
+-      //Destroy event
+-      var id = (e>>1) - 1
+-      if(color === 0) {
+-        //Red
+-        sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, id)
+-      } else if(color === 1) {
+-        //Blue
+-        sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, id)
+-      } else if(color === 2) {
+-        //Both
+-        sqPop(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive--, id)
+-      }
+-    }
+-  }
+-}
+-
+-//Sweep and prune/scanline algorithm:
+-//  Scan along axis, detect intersections
+-//  Brute force all boxes along axis
+-function scanBipartite(
+-  d, axis, visit, flip,
+-  redStart,  redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-  
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = axis
+-  var iend     = axis+d
+-
+-  var redShift  = 1
+-  var blueShift = 1
+-  if(flip) {
+-    blueShift = BLUE_FLAG
+-  } else {
+-    redShift  = BLUE_FLAG
+-  }
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = i + redShift
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = i + blueShift
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e < 0) {
+-      var idx   = -e
+-      var isRed = false
+-      if(idx >= BLUE_FLAG) {
+-        isRed = !flip
+-        idx -= BLUE_FLAG 
+-      } else {
+-        isRed = !!flip
+-        idx -= 1
+-      }
+-      if(isRed) {
+-        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, idx)
+-      } else {
+-        var blueId  = blueIndex[idx]
+-        var bluePtr = elemSize * idx
+-        
+-        var b0 = blue[bluePtr+axis+1]
+-        var b1 = blue[bluePtr+axis+1+d]
+-
+-red_loop:
+-        for(var j=0; j<redActive; ++j) {
+-          var oidx   = RED_SWEEP_QUEUE[j]
+-          var redPtr = elemSize * oidx
+-
+-          if(b1 < red[redPtr+axis+1] || 
+-             red[redPtr+axis+1+d] < b0) {
+-            continue
+-          }
+-
+-          for(var k=axis+2; k<d; ++k) {
+-            if(blue[bluePtr + k + d] < red[redPtr + k] || 
+-               red[redPtr + k + d] < blue[bluePtr + k]) {
+-              continue red_loop
+-            }
+-          }
+-
+-          var redId  = redIndex[oidx]
+-          var retval
+-          if(flip) {
+-            retval = visit(blueId, redId)
+-          } else {
+-            retval = visit(redId, blueId)
+-          }
+-          if(retval !== void 0) {
+-            return retval 
+-          }
+-        }
+-      }
+-    } else {
+-      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e - redShift)
+-    }
+-  }
+-}
+-
+-function scanComplete(
+-  d, axis, visit,
+-  redStart,  redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = axis
+-  var iend     = axis+d
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = i + BLUE_FLAG
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = i + 1
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e < 0) {
+-      var idx   = -e
+-      if(idx >= BLUE_FLAG) {
+-        RED_SWEEP_QUEUE[redActive++] = idx - BLUE_FLAG
+-      } else {
+-        idx -= 1
+-        var blueId  = blueIndex[idx]
+-        var bluePtr = elemSize * idx
+-
+-        var b0 = blue[bluePtr+axis+1]
+-        var b1 = blue[bluePtr+axis+1+d]
+-
+-red_loop:
+-        for(var j=0; j<redActive; ++j) {
+-          var oidx   = RED_SWEEP_QUEUE[j]
+-          var redId  = redIndex[oidx]
+-
+-          if(redId === blueId) {
+-            break
+-          }
+-
+-          var redPtr = elemSize * oidx
+-          if(b1 < red[redPtr+axis+1] || 
+-            red[redPtr+axis+1+d] < b0) {
+-            continue
+-          }
+-          for(var k=axis+2; k<d; ++k) {
+-            if(blue[bluePtr + k + d] < red[redPtr + k] || 
+-               red[redPtr + k + d]   < blue[bluePtr + k]) {
+-              continue red_loop
+-            }
+-          }
+-
+-          var retval = visit(redId, blueId)
+-          if(retval !== void 0) {
+-            return retval 
+-          }
+-        }
+-      }
+-    } else {
+-      var idx = e - BLUE_FLAG
+-      for(var j=redActive-1; j>=0; --j) {
+-        if(RED_SWEEP_QUEUE[j] === idx) {
+-          for(var k=j+1; k<redActive; ++k) {
+-            RED_SWEEP_QUEUE[k-1] = RED_SWEEP_QUEUE[k]
+-          }
+-          break
+-        }
+-      }
+-      --redActive
+-    }
+-  }
+-}
+-},{"./sort":94,"bit-twiddle":51,"typedarray-pool":458}],96:[function(require,module,exports){
+-(function (Buffer){
+-var hasTypedArrays = false
+-if(typeof Float64Array !== "undefined") {
+-  var DOUBLE_VIEW = new Float64Array(1)
+-    , UINT_VIEW   = new Uint32Array(DOUBLE_VIEW.buffer)
+-  DOUBLE_VIEW[0] = 1.0
+-  hasTypedArrays = true
+-  if(UINT_VIEW[1] === 0x3ff00000) {
+-    //Use little endian
+-    module.exports = function doubleBitsLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return [ UINT_VIEW[0], UINT_VIEW[1] ]
+-    }
+-    function toDoubleLE(lo, hi) {
+-      UINT_VIEW[0] = lo
+-      UINT_VIEW[1] = hi
+-      return DOUBLE_VIEW[0]
+-    }
+-    module.exports.pack = toDoubleLE
+-    function lowUintLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[0]
+-    }
+-    module.exports.lo = lowUintLE
+-    function highUintLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[1]
+-    }
+-    module.exports.hi = highUintLE
+-  } else if(UINT_VIEW[0] === 0x3ff00000) {
+-    //Use big endian
+-    module.exports = function doubleBitsBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return [ UINT_VIEW[1], UINT_VIEW[0] ]
+-    }
+-    function toDoubleBE(lo, hi) {
+-      UINT_VIEW[1] = lo
+-      UINT_VIEW[0] = hi
+-      return DOUBLE_VIEW[0]
+-    }
+-    module.exports.pack = toDoubleBE
+-    function lowUintBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[1]
+-    }
+-    module.exports.lo = lowUintBE
+-    function highUintBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[0]
+-    }
+-    module.exports.hi = highUintBE
+-  } else {
+-    hasTypedArrays = false
+-  }
+-}
+-if(!hasTypedArrays) {
+-  var buffer = new Buffer(8)
+-  module.exports = function doubleBits(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return [ buffer.readUInt32LE(0, true), buffer.readUInt32LE(4, true) ]
+-  }
+-  function toDouble(lo, hi) {
+-    buffer.writeUInt32LE(lo, 0, true)
+-    buffer.writeUInt32LE(hi, 4, true)
+-    return buffer.readDoubleLE(0, true)
+-  }
+-  module.exports.pack = toDouble  
+-  function lowUint(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return buffer.readUInt32LE(0, true)
+-  }
+-  module.exports.lo = lowUint
+-  function highUint(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return buffer.readUInt32LE(4, true)
+-  }
+-  module.exports.hi = highUint
+-}
+-
+-module.exports.sign = function(n) {
+-  return module.exports.hi(n) >>> 31
+-}
+-
+-module.exports.exponent = function(n) {
+-  var b = module.exports.hi(n)
+-  return ((b<<1) >>> 21) - 1023
+-}
+-
+-module.exports.fraction = function(n) {
+-  var lo = module.exports.lo(n)
+-  var hi = module.exports.hi(n)
+-  var b = hi & ((1<<20) - 1)
+-  if(hi & 0x7ff00000) {
+-    b += (1<<20)
+-  }
+-  return [lo, b]
+-}
+-
+-module.exports.denormalized = function(n) {
+-  var hi = module.exports.hi(n)
+-  return !(hi & 0x7ff00000)
+-}
+-}).call(this,require("buffer").Buffer)
+-},{"buffer":53}],97:[function(require,module,exports){
+-"use strict"
+-
+-var doubleBits = require("double-bits")
+-
+-var SMALLEST_DENORM = Math.pow(2, -1074)
+-var UINT_MAX = (-1)>>>0
+-
+-module.exports = nextafter
+-
+-function nextafter(x, y) {
+-  if(isNaN(x) || isNaN(y)) {
+-    return NaN
+-  }
+-  if(x === y) {
+-    return x
+-  }
+-  if(x === 0) {
+-    if(y < 0) {
+-      return -SMALLEST_DENORM
+-    } else {
+-      return SMALLEST_DENORM
+-    }
+-  }
+-  var hi = doubleBits.hi(x)
+-  var lo = doubleBits.lo(x)
+-  if((y > x) === (x > 0)) {
+-    if(lo === UINT_MAX) {
+-      hi += 1
+-      lo = 0
+-    } else {
+-      lo += 1
+-    }
+-  } else {
+-    if(lo === 0) {
+-      lo = UINT_MAX
+-      hi -= 1
+-    } else {
+-      lo -= 1
+-    }
+-  }
+-  return doubleBits.pack(lo, hi)
+-}
+-},{"double-bits":96}],98:[function(require,module,exports){
+-'use strict'
+-
+-var bnadd = require('big-rat/add')
+-
+-module.exports = add
+-
+-function add(a, b) {
+-  var n = a.length
+-  var r = new Array(n)
+-    for(var i=0; i<n; ++i) {
+-    r[i] = bnadd(a[i], b[i])
+-  }
+-  return r
+-}
+-
+-},{"big-rat/add":72}],99:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = float2rat
+-
+-var rat = require('big-rat')
+-
+-function float2rat(v) {
+-  var result = new Array(v.length)
+-  for(var i=0; i<v.length; ++i) {
+-    result[i] = rat(v[i])
+-  }
+-  return result
+-}
+-
+-},{"big-rat":75}],100:[function(require,module,exports){
+-'use strict'
+-
+-var rat = require('big-rat')
+-var mul = require('big-rat/mul')
+-
+-module.exports = muls
+-
+-function muls(a, x) {
+-  var s = rat(x)
+-  var n = a.length
+-  var r = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    r[i] = mul(a[i], s)
+-  }
+-  return r
+-}
+-
+-},{"big-rat":75,"big-rat/mul":84}],101:[function(require,module,exports){
+-'use strict'
+-
+-var bnsub = require('big-rat/sub')
+-
+-module.exports = sub
+-
+-function sub(a, b) {
+-  var n = a.length
+-  var r = new Array(n)
+-    for(var i=0; i<n; ++i) {
+-    r[i] = bnsub(a[i], b[i])
+-  }
+-  return r
+-}
+-
+-},{"big-rat/sub":87}],102:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = segmentsIntersect
+-
+-var orient = require("robust-orientation")[3]
+-
+-function checkCollinear(a0, a1, b0, b1) {
+-
+-  for(var d=0; d<2; ++d) {
+-    var x0 = a0[d]
+-    var y0 = a1[d]
+-    var l0 = Math.min(x0, y0)
+-    var h0 = Math.max(x0, y0)    
+-
+-    var x1 = b0[d]
+-    var y1 = b1[d]
+-    var l1 = Math.min(x1, y1)
+-    var h1 = Math.max(x1, y1)    
+-
+-    if(h1 < l0 || h0 < l1) {
+-      return false
+-    }
+-  }
+-
+-  return true
+-}
+-
+-function segmentsIntersect(a0, a1, b0, b1) {
+-  var x0 = orient(a0, b0, b1)
+-  var y0 = orient(a1, b0, b1)
+-  if((x0 > 0 && y0 > 0) || (x0 < 0 && y0 < 0)) {
+-    return false
+-  }
+-
+-  var x1 = orient(b0, a0, a1)
+-  var y1 = orient(b1, a0, a1)
+-  if((x1 > 0 && y1 > 0) || (x1 < 0 && y1 < 0)) {
+-    return false
+-  }
+-
+-  //Check for degenerate collinear case
+-  if(x0 === 0 && y0 === 0 && x1 === 0 && y1 === 0) {
+-    return checkCollinear(a0, a1, b0, b1)
+-  }
+-
+-  return true
+-}
+-},{"robust-orientation":439}],103:[function(require,module,exports){
+-"use strict"; "use restrict";
+-
+-module.exports = UnionFind;
+-
+-function UnionFind(count) {
+-  this.roots = new Array(count);
+-  this.ranks = new Array(count);
+-  
+-  for(var i=0; i<count; ++i) {
+-    this.roots[i] = i;
+-    this.ranks[i] = 0;
+-  }
+-}
+-
+-var proto = UnionFind.prototype
+-
+-Object.defineProperty(proto, "length", {
+-  "get": function() {
+-    return this.roots.length
+-  }
+-})
+-
+-proto.makeSet = function() {
+-  var n = this.roots.length;
+-  this.roots.push(n);
+-  this.ranks.push(0);
+-  return n;
+-}
+-
+-proto.find = function(x) {
+-  var x0 = x
+-  var roots = this.roots;
+-  while(roots[x] !== x) {
+-    x = roots[x]
+-  }
+-  while(roots[x0] !== x) {
+-    var y = roots[x0]
+-    roots[x0] = x
+-    x0 = y
+-  }
+-  return x;
+-}
+-
+-proto.link = function(x, y) {
+-  var xr = this.find(x)
+-    , yr = this.find(y);
+-  if(xr === yr) {
+-    return;
+-  }
+-  var ranks = this.ranks
+-    , roots = this.roots
+-    , xd    = ranks[xr]
+-    , yd    = ranks[yr];
+-  if(xd < yd) {
+-    roots[xr] = yr;
+-  } else if(yd < xd) {
+-    roots[yr] = xr;
+-  } else {
+-    roots[yr] = xr;
+-    ++ranks[xr];
+-  }
+-}
+-},{}],104:[function(require,module,exports){
+-(function (Buffer){
+-var clone = (function() {
+-'use strict';
+-
+-/**
+- * Clones (copies) an Object using deep copying.
+- *
+- * This function supports circular references by default, but if you are certain
+- * there are no circular references in your object, you can save some CPU time
+- * by calling clone(obj, false).
+- *
+- * Caution: if `circular` is false and `parent` contains circular references,
+- * your program may enter an infinite loop and crash.
+- *
+- * @param `parent` - the object to be cloned
+- * @param `circular` - set to true if the object to be cloned may contain
+- *    circular references. (optional - true by default)
+- * @param `depth` - set to a number if the object is only to be cloned to
+- *    a particular depth. (optional - defaults to Infinity)
+- * @param `prototype` - sets the prototype to be used when cloning an object.
+- *    (optional - defaults to parent prototype).
+-*/
+-function clone(parent, circular, depth, prototype) {
+-  var filter;
+-  if (typeof circular === 'object') {
+-    depth = circular.depth;
+-    prototype = circular.prototype;
+-    filter = circular.filter;
+-    circular = circular.circular
+-  }
+-  // maintain two arrays for circular references, where corresponding parents
+-  // and children have the same index
+-  var allParents = [];
+-  var allChildren = [];
+-
+-  var useBuffer = typeof Buffer != 'undefined';
+-
+-  if (typeof circular == 'undefined')
+-    circular = true;
+-
+-  if (typeof depth == 'undefined')
+-    depth = Infinity;
+-
+-  // recurse this function so we don't reset allParents and allChildren
+-  function _clone(parent, depth) {
+-    // cloning null always returns null
+-    if (parent === null)
+-      return null;
+-
+-    if (depth == 0)
+-      return parent;
+-
+-    var child;
+-    var proto;
+-    if (typeof parent != 'object') {
+-      return parent;
+-    }
+-
+-    if (clone.__isArray(parent)) {
+-      child = [];
+-    } else if (clone.__isRegExp(parent)) {
+-      child = new RegExp(parent.source, __getRegExpFlags(parent));
+-      if (parent.lastIndex) child.lastIndex = parent.lastIndex;
+-    } else if (clone.__isDate(parent)) {
+-      child = new Date(parent.getTime());
+-    } else if (useBuffer && Buffer.isBuffer(parent)) {
+-      child = new Buffer(parent.length);
+-      parent.copy(child);
+-      return child;
+-    } else {
+-      if (typeof prototype == 'undefined') {
+-        proto = Object.getPrototypeOf(parent);
+-        child = Object.create(proto);
+-      }
+-      else {
+-        child = Object.create(prototype);
+-        proto = prototype;
+-      }
+-    }
+-
+-    if (circular) {
+-      var index = allParents.indexOf(parent);
+-
+-      if (index != -1) {
+-        return allChildren[index];
+-      }
+-      allParents.push(parent);
+-      allChildren.push(child);
+-    }
+-
+-    for (var i in parent) {
+-      var attrs;
+-      if (proto) {
+-        attrs = Object.getOwnPropertyDescriptor(proto, i);
+-      }
+-
+-      if (attrs && attrs.set == null) {
+-        continue;
+-      }
+-      child[i] = _clone(parent[i], depth - 1);
+-    }
+-
+-    return child;
+-  }
+-
+-  return _clone(parent, depth);
+-}
+-
+-/**
+- * Simple flat clone using prototype, accepts only objects, usefull for property
+- * override on FLAT configuration object (no nested props).
+- *
+- * USE WITH CAUTION! This may not behave as you wish if you do not know how this
+- * works.
+- */
+-clone.clonePrototype = function clonePrototype(parent) {
+-  if (parent === null)
+-    return null;
+-
+-  var c = function () {};
+-  c.prototype = parent;
+-  return new c();
+-};
+-
+-// private utility functions
+-
+-function __objToStr(o) {
+-  return Object.prototype.toString.call(o);
+-};
+-clone.__objToStr = __objToStr;
+-
+-function __isDate(o) {
+-  return typeof o === 'object' && __objToStr(o) === '[object Date]';
+-};
+-clone.__isDate = __isDate;
+-
+-function __isArray(o) {
+-  return typeof o === 'object' && __objToStr(o) === '[object Array]';
+-};
+-clone.__isArray = __isArray;
+-
+-function __isRegExp(o) {
+-  return typeof o === 'object' && __objToStr(o) === '[object RegExp]';
+-};
+-clone.__isRegExp = __isRegExp;
+-
+-function __getRegExpFlags(re) {
+-  var flags = '';
+-  if (re.global) flags += 'g';
+-  if (re.ignoreCase) flags += 'i';
+-  if (re.multiline) flags += 'm';
+-  return flags;
+-};
+-clone.__getRegExpFlags = __getRegExpFlags;
+-
+-return clone;
+-})();
+-
+-if (typeof module === 'object' && module.exports) {
+-  module.exports = clone;
+-}
+-
+-}).call(this,require("buffer").Buffer)
+-},{"buffer":53}],105:[function(require,module,exports){
+-module.exports={"jet":[{"index":0,"rgb":[0,0,131]},{"index":0.125,"rgb":[0,60,170]},{"index":0.375,"rgb":[5,255,255]},{"index":0.625,"rgb":[255,255,0]},{"index":0.875,"rgb":[250,0,0]},{"index":1,"rgb":[128,0,0]}],"hsv":[{"index":0,"rgb":[255,0,0]},{"index":0.169,"rgb":[253,255,2]},{"index":0.173,"rgb":[247,255,2]},{"index":0.337,"rgb":[0,252,4]},{"index":0.341,"rgb":[0,252,10]},{"index":0.506,"rgb":[1,249,255]},{"index":0.671,"rgb":[2,0,253]},{"index":0.675,"rgb":[8,0,253]},{"index":0.839,"rgb":[255,0,251]},{"index":0.843,"rgb":[255,0,245]},{"index":1,"rgb":[255,0,6]}],"hot":[{"index":0,"rgb":[0,0,0]},{"index":0.3,"rgb":[230,0,0]},{"index":0.6,"rgb":[255,210,0]},{"index":1,"rgb":[255,255,255]}],"cool":[{"index":0,"rgb":[0,255,255]},{"index":1,"rgb":[255,0,255]}],"spring":[{"index":0,"rgb":[255,0,255]},{"index":1,"rgb":[255,255,0]}],"summer":[{"index":0,"rgb":[0,128,102]},{"index":1,"rgb":[255,255,102]}],"autumn":[{"index":0,"rgb":[255,0,0]},{"index":1,"rgb":[255,255,0]}],"winter":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[0,255,128]}],"bone":[{"index":0,"rgb":[0,0,0]},{"index":0.376,"rgb":[84,84,116]},{"index":0.753,"rgb":[169,200,200]},{"index":1,"rgb":[255,255,255]}],"copper":[{"index":0,"rgb":[0,0,0]},{"index":0.804,"rgb":[255,160,102]},{"index":1,"rgb":[255,199,127]}],"greys":[{"index":0,"rgb":[0,0,0]},{"index":1,"rgb":[255,255,255]}],"yignbu":[{"index":0,"rgb":[8,29,88]},{"index":0.125,"rgb":[37,52,148]},{"index":0.25,"rgb":[34,94,168]},{"index":0.375,"rgb":[29,145,192]},{"index":0.5,"rgb":[65,182,196]},{"index":0.625,"rgb":[127,205,187]},{"index":0.75,"rgb":[199,233,180]},{"index":0.875,"rgb":[237,248,217]},{"index":1,"rgb":[255,255,217]}],"greens":[{"index":0,"rgb":[0,68,27]},{"index":0.125,"rgb":[0,109,44]},{"index":0.25,"rgb":[35,139,69]},{"index":0.375,"rgb":[65,171,93]},{"index":0.5,"rgb":[116,196,118]},{"index":0.625,"rgb":[161,217,155]},{"index":0.75,"rgb":[199,233,192]},{"index":0.875,"rgb":[229,245,224]},{"index":1,"rgb":[247,252,245]}],"yiorrd":[{"index":0,"rgb":[128,0,38]},{"index":0.125,"rgb":[189,0,38]},{"index":0.25,"rgb":[227,26,28]},{"index":0.375,"rgb":[252,78,42]},{"index":0.5,"rgb":[253,141,60]},{"index":0.625,"rgb":[254,178,76]},{"index":0.75,"rgb":[254,217,118]},{"index":0.875,"rgb":[255,237,160]},{"index":1,"rgb":[255,255,204]}],"bluered":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[255,0,0]}],"rdbu":[{"index":0,"rgb":[5,10,172]},{"index":0.35,"rgb":[106,137,247]},{"index":0.5,"rgb":[190,190,190]},{"index":0.6,"rgb":[220,170,132]},{"index":0.7,"rgb":[230,145,90]},{"index":1,"rgb":[178,10,28]}],"picnic":[{"index":0,"rgb":[0,0,255]},{"index":0.1,"rgb":[51,153,255]},{"index":0.2,"rgb":[102,204,255]},{"index":0.3,"rgb":[153,204,255]},{"index":0.4,"rgb":[204,204,255]},{"index":0.5,"rgb":[255,255,255]},{"index":0.6,"rgb":[255,204,255]},{"index":0.7,"rgb":[255,153,255]},{"index":0.8,"rgb":[255,102,204]},{"index":0.9,"rgb":[255,102,102]},{"index":1,"rgb":[255,0,0]}],"rainbow":[{"index":0,"rgb":[150,0,90]},{"index":0.125,"rgb":[0,0,200]},{"index":0.25,"rgb":[0,25,255]},{"index":0.375,"rgb":[0,152,255]},{"index":0.5,"rgb":[44,255,150]},{"index":0.625,"rgb":[151,255,0]},{"index":0.75,"rgb":[255,234,0]},{"index":0.875,"rgb":[255,111,0]},{"index":1,"rgb":[255,0,0]}],"portland":[{"index":0,"rgb":[12,51,131]},{"index":0.25,"rgb":[10,136,186]},{"index":0.5,"rgb":[242,211,56]},{"index":0.75,"rgb":[242,143,56]},{"index":1,"rgb":[217,30,30]}],"blackbody":[{"index":0,"rgb":[0,0,0]},{"index":0.2,"rgb":[230,0,0]},{"index":0.4,"rgb":[230,210,0]},{"index":0.7,"rgb":[255,255,255]},{"index":1,"rgb":[160,200,255]}],"earth":[{"index":0,"rgb":[0,0,130]},{"index":0.1,"rgb":[0,180,180]},{"index":0.2,"rgb":[40,210,40]},{"index":0.4,"rgb":[230,230,50]},{"index":0.6,"rgb":[120,70,20]},{"index":1,"rgb":[255,255,255]}],"electric":[{"index":0,"rgb":[0,0,0]},{"index":0.15,"rgb":[30,0,100]},{"index":0.4,"rgb":[120,0,100]},{"index":0.6,"rgb":[160,90,0]},{"index":0.8,"rgb":[230,200,0]},{"index":1,"rgb":[255,250,220]}], "alpha": [{"index":0, "rgb": [255,255,255,0]},{"index":0, "rgb": [255,255,255,1]}]};
+-
+-},{}],106:[function(require,module,exports){
+-/*
+- * Ben Postlethwaite
+- * January 2013
+- * License MIT
+- */
+-'use strict';
+-
+-var at = require('arraytools');
+-var clone = require('clone');
+-var colorScale = require('./colorScales');
+-
+-module.exports = function (spec) {
+-
+-    /*
+-     * Default Options
+-     */
+-    var indicies, rgba, fromrgba, torgba,
+-        nsteps, cmap, colormap, format,
+-        nshades, colors, alpha, index, i,
+-        r = [],
+-        g = [],
+-        b = [],
+-        a = [];
+-
+-    if ( !at.isPlainObject(spec) ) spec = {};
+-
+-    nshades = spec.nshades || 72;
+-    format = spec.format || 'hex';
+-
+-    colormap = spec.colormap;
+-    if (!colormap) colormap = 'jet';
+-
+-    if (typeof colormap === 'string') {
+-        colormap = colormap.toLowerCase();
+-
+-        if (!colorScale[colormap]) {
+-            throw Error(colormap + ' not a supported colorscale');
+-        }
+-
+-        cmap = clone(colorScale[colormap]);
+-
+-    } else if (Array.isArray(colormap)) {
+-        cmap = clone(colormap);
+-
+-    } else {
+-        throw Error('unsupported colormap option', colormap);
+-    }
+-
+-    if (cmap.length > nshades) {
+-        throw new Error(
+-            colormap+' map requires nshades to be at least size '+cmap.length
+-        );
+-    }
+-
+-    if (!Array.isArray(spec.alpha)) {
+-
+-        if (typeof spec.alpha === 'number') {
+-            alpha = [spec.alpha, spec.alpha];
+-
+-        } else {
+-            alpha = [1, 1];
+-        }
+-
+-    } else if (spec.alpha.length !== 2) {
+-        alpha = [1, 1];
+-
+-    } else {
+-        alpha = clone(spec.alpha);
+-    }
+-
+-    /*
+-     * map index points from 0->1 to 0 -> n-1
+-     */
+-    indicies = cmap.map(function(c) {
+-        return Math.round(c.index * nshades);
+-    });
+-
+-    /*
+-     * Add alpha channel to the map
+-     */
+-    if (alpha[0] < 0) alpha[0] = 0;
+-    if (alpha[1] < 0) alpha[0] = 0;
+-    if (alpha[0] > 1) alpha[0] = 1;
+-    if (alpha[1] > 1) alpha[0] = 1;
+-
+-    for (i = 0; i < indicies.length; ++i) {
+-        index = cmap[i].index;
+-        rgba = cmap[i].rgb;
+-
+-        // if user supplies their own map use it
+-        if (rgba.length === 4 && rgba[3] >= 0 && rgba[3] <= 1) continue;
+-        rgba[3] = alpha[0] + (alpha[1] - alpha[0])*index;
+-    }
+-
+-    /*
+-     * map increasing linear values between indicies to
+-     * linear steps in colorvalues
+-     */
+-    for (i = 0; i < indicies.length-1; ++i) {
+-        nsteps = indicies[i+1] - indicies[i];
+-        fromrgba = cmap[i].rgb;
+-        torgba = cmap[i+1].rgb;
+-        r = r.concat(at.linspace(fromrgba[0], torgba[0], nsteps ) );
+-        g = g.concat(at.linspace(fromrgba[1], torgba[1], nsteps ) );
+-        b = b.concat(at.linspace(fromrgba[2], torgba[2], nsteps ) );
+-        a = a.concat(at.linspace(fromrgba[3], torgba[3], nsteps ) );
+-    }
+-
+-    r = r.map( Math.round );
+-    g = g.map( Math.round );
+-    b = b.map( Math.round );
+-
+-    colors = at.zip(r, g, b, a);
+-
+-    if (format === 'hex') colors = colors.map( rgb2hex );
+-    if (format === 'rgbaString') colors = colors.map( rgbaStr );
+-
+-    return colors;
+-};
+-
+-
+-function rgb2hex (rgba) {
+-    var dig, hex = '#';
+-    for (var i = 0; i < 3; ++i) {
+-        dig = rgba[i];
+-        dig = dig.toString(16);
+-        hex += ('00' + dig).substr( dig.length );
+-    }
+-    return hex;
+-}
+-
+-function rgbaStr (rgba) {
+-    return 'rgba(' + rgba.join(',') + ')';
+-}
+-
+-},{"./colorScales":105,"arraytools":50,"clone":104}],107:[function(require,module,exports){
+-module.exports = compareCells
+-
+-var min = Math.min
+-
+-function compareInt(a, b) {
+-  return a - b
+-}
+-
+-function compareCells(a, b) {
+-  var n = a.length
+-    , t = a.length - b.length
+-  if(t) {
+-    return t
+-  }
+-  switch(n) {
+-    case 0:
+-      return 0
+-    case 1:
+-      return a[0] - b[0]
+-    case 2:
+-      return (a[0]+a[1]-b[0]-b[1]) ||
+-             min(a[0],a[1]) - min(b[0],b[1])
+-    case 3:
+-      var l1 = a[0]+a[1]
+-        , m1 = b[0]+b[1]
+-      t = l1+a[2] - (m1+b[2])
+-      if(t) {
+-        return t
+-      }
+-      var l0 = min(a[0], a[1])
+-        , m0 = min(b[0], b[1])
+-      return min(l0, a[2]) - min(m0, b[2]) ||
+-             min(l0+a[2], l1) - min(m0+b[2], m1)
+-    case 4:
+-      var aw=a[0], ax=a[1], ay=a[2], az=a[3]
+-        , bw=b[0], bx=b[1], by=b[2], bz=b[3]
+-      return (aw+ax+ay+az)-(bw+bx+by+bz) ||
+-             min(aw,ax,ay,az)-min(bw,bx,by,bz,bw) ||
+-             min(aw+ax,aw+ay,aw+az,ax+ay,ax+az,ay+az) -
+-               min(bw+bx,bw+by,bw+bz,bx+by,bx+bz,by+bz) ||
+-             min(aw+ax+ay,aw+ax+az,aw+ay+az,ax+ay+az) -
+-               min(bw+bx+by,bw+bx+bz,bw+by+bz,bx+by+bz)
+-    default:
+-      var as = a.slice().sort(compareInt)
+-      var bs = b.slice().sort(compareInt)
+-      for(var i=0; i<n; ++i) {
+-        t = as[i] - bs[i]
+-        if(t) {
+-          return t
+-        }
+-      }
+-      return 0
+-  }
+-}
+-
+-},{}],108:[function(require,module,exports){
+-"use strict"
+-
+-var convexHull1d = require('./lib/ch1d')
+-var convexHull2d = require('./lib/ch2d')
+-var convexHullnd = require('./lib/chnd')
+-
+-module.exports = convexHull
+-
+-function convexHull(points) {
+-  var n = points.length
+-  if(n === 0) {
+-    return []
+-  } else if(n === 1) {
+-    return [[0]]
+-  }
+-  var d = points[0].length
+-  if(d === 0) {
+-    return []
+-  } else if(d === 1) {
+-    return convexHull1d(points)
+-  } else if(d === 2) {
+-    return convexHull2d(points)
+-  }
+-  return convexHullnd(points, d)
+-}
+-},{"./lib/ch1d":109,"./lib/ch2d":110,"./lib/chnd":111}],109:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = convexHull1d
+-
+-function convexHull1d(points) {
+-  var lo = 0
+-  var hi = 0
+-  for(var i=1; i<points.length; ++i) {
+-    if(points[i][0] < points[lo][0]) {
+-      lo = i
+-    }
+-    if(points[i][0] > points[hi][0]) {
+-      hi = i
+-    }
+-  }
+-  if(lo < hi) {
+-    return [[lo], [hi]]
+-  } else if(lo > hi) {
+-    return [[hi], [lo]]
+-  } else {
+-    return [[lo]]
+-  }
+-}
+-},{}],110:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = convexHull2D
+-
+-var monotoneHull = require('monotone-convex-hull-2d')
+-
+-function convexHull2D(points) {
+-  var hull = monotoneHull(points)
+-  var h = hull.length
+-  if(h <= 2) {
+-    return []
+-  }
+-  var edges = new Array(h)
+-  var a = hull[h-1]
+-  for(var i=0; i<h; ++i) {
+-    var b = hull[i]
+-    edges[i] = [a,b]
+-    a = b
+-  }
+-  return edges
+-}
+-
+-},{"monotone-convex-hull-2d":113}],111:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = convexHullnD
+-
+-var ich = require('incremental-convex-hull')
+-var aff = require('affine-hull')
+-
+-function permute(points, front) {
+-  var n = points.length
+-  var npoints = new Array(n)
+-  for(var i=0; i<front.length; ++i) {
+-    npoints[i] = points[front[i]]
+-  }
+-  var ptr = front.length
+-  for(var i=0; i<n; ++i) {
+-    if(front.indexOf(i) < 0) {
+-      npoints[ptr++] = points[i]
+-    }
+-  }
+-  return npoints
+-}
+-
+-function invPermute(cells, front) {
+-  var nc = cells.length
+-  var nf = front.length
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      var x = c[j]
+-      if(x < nf) {
+-        c[j] = front[x]
+-      } else {
+-        x = x - nf
+-        for(var k=0; k<nf; ++k) {
+-          if(x >= front[k]) {
+-            x += 1
+-          }
+-        }
+-        c[j] = x
+-      }
+-    }
+-  }
+-  return cells
+-}
+-
+-function convexHullnD(points, d) {
+-  try {
+-    return ich(points, true)
+-  } catch(e) {
+-    //If point set is degenerate, try to find a basis and rerun it
+-    var ah = aff(points)
+-    if(ah.length <= d) {
+-      //No basis, no try
+-      return []
+-    }
+-    var npoints = permute(points, ah)
+-    var nhull   = ich(npoints, true)
+-    return invPermute(nhull, ah)
+-  }
+-}
+-},{"affine-hull":112,"incremental-convex-hull":241}],112:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = affineHull
+-
+-var orient = require('robust-orientation')
+-
+-function linearlyIndependent(points, d) {
+-  var nhull = new Array(d+1)
+-  for(var i=0; i<points.length; ++i) {
+-    nhull[i] = points[i]
+-  }
+-  for(var i=0; i<=points.length; ++i) {
+-    for(var j=points.length; j<=d; ++j) {
+-      var x = new Array(d)
+-      for(var k=0; k<d; ++k) {
+-        x[k] = Math.pow(j+1-i, k)
+-      }
+-      nhull[j] = x
+-    }
+-    var o = orient.apply(void 0, nhull)
+-    if(o) {
+-      return true
+-    }
+-  }
+-  return false
+-}
+-
+-function affineHull(points) {
+-  var n = points.length
+-  if(n === 0) {
+-    return []
+-  }
+-  if(n === 1) {
+-    return [0]
+-  }
+-  var d = points[0].length
+-  var frame = [ points[0] ]
+-  var index = [ 0 ]
+-  for(var i=1; i<n; ++i) {
+-    frame.push(points[i])
+-    if(!linearlyIndependent(frame, d)) {
+-      frame.pop()
+-      continue
+-    }
+-    index.push(i)
+-    if(index.length === d+1) {
+-      return index
+-    }
+-  }
+-  return index
+-}
+-},{"robust-orientation":439}],113:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = monotoneConvexHull2D
+-
+-var orient = require('robust-orientation')[3]
+-
+-function monotoneConvexHull2D(points) {
+-  var n = points.length
+-
+-  if(n < 3) {
+-    var result = new Array(n)
+-    for(var i=0; i<n; ++i) {
+-      result[i] = i
+-    }
+-
+-    if(n === 2 &&
+-       points[0][0] === points[1][0] &&
+-       points[0][1] === points[1][1]) {
+-      return [0]
+-    }
+-
+-    return result
+-  }
+-
+-  //Sort point indices along x-axis
+-  var sorted = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    sorted[i] = i
+-  }
+-  sorted.sort(function(a,b) {
+-    var d = points[a][0]-points[b][0]
+-    if(d) {
+-      return d
+-    }
+-    return points[a][1] - points[b][1]
+-  })
+-
+-  //Construct upper and lower hulls
+-  var lower = [sorted[0], sorted[1]]
+-  var upper = [sorted[0], sorted[1]]
+-
+-  for(var i=2; i<n; ++i) {
+-    var idx = sorted[i]
+-    var p   = points[idx]
+-
+-    //Insert into lower list
+-    var m = lower.length
+-    while(m > 1 && orient(
+-        points[lower[m-2]], 
+-        points[lower[m-1]], 
+-        p) <= 0) {
+-      m -= 1
+-      lower.pop()
+-    }
+-    lower.push(idx)
+-
+-    //Insert into upper list
+-    m = upper.length
+-    while(m > 1 && orient(
+-        points[upper[m-2]], 
+-        points[upper[m-1]], 
+-        p) >= 0) {
+-      m -= 1
+-      upper.pop()
+-    }
+-    upper.push(idx)
+-  }
+-
+-  //Merge lists together
+-  var result = new Array(upper.length + lower.length - 2)
+-  var ptr    = 0
+-  for(var i=0, nl=lower.length; i<nl; ++i) {
+-    result[ptr++] = lower[i]
+-  }
+-  for(var j=upper.length-2; j>0; --j) {
+-    result[ptr++] = upper[j]
+-  }
+-
+-  //Return result
+-  return result
+-}
+-},{"robust-orientation":439}],114:[function(require,module,exports){
+-module.exports = {
+-  AFG: "afghan",
+-  ALA: "\\b\\wland",
+-  ALB: "albania",
+-  DZA: "algeria",
+-  ASM: "^(?=.*americ).*samoa",
+-  AND: "andorra",
+-  AGO: "angola",
+-  AIA: "anguill?a",
+-  ATA: "antarctica",
+-  ATG: "antigua",
+-  ARG: "argentin",
+-  ARM: "armenia",
+-  ABW: "^(?!.*bonaire).*\\baruba",
+-  AUS: "australia",
+-  AUT: "^(?!.*hungary).*austria|\\baustri.*\\bemp",
+-  AZE: "azerbaijan",
+-  BHS: "bahamas",
+-  BHR: "bahrain",
+-  BGD: "bangladesh|^(?=.*east).*paki?stan",
+-  BRB: "barbados",
+-  BLR: "belarus|byelo",
+-  BEL: "^(?!.*luxem).*belgium",
+-  BLZ: "belize|^(?=.*british).*honduras",
+-  BEN: "benin|dahome",
+-  BMU: "bermuda",
+-  BTN: "bhutan",
+-  BOL: "bolivia",
+-  BES: "^(?=.*bonaire).*eustatius|^(?=.*carib).*netherlands|\\bbes.?islands",
+-  BIH: "herzegovina|bosnia",
+-  BWA: "botswana|bechuana",
+-  BVT: "bouvet",
+-  BRA: "brazil",
+-  IOT: "british.?indian.?ocean",
+-  BRN: "brunei",
+-  BGR: "bulgaria",
+-  BFA: "burkina|\\bfaso|upper.?volta",
+-  BDI: "burundi",
+-  KHM: "cambodia|kampuchea|khmer",
+-  CMR: "cameroon",
+-  CAN: "canada",
+-  CPV: "verde",
+-  CYM: "cayman",
+-  CAF: "\\bcentral.african.republic",
+-  TCD: "\\bchad",
+-  CHL: "\\bchile",
+-  CHN: "^(?!.*\\bmac)(?!.*\\bhong)(?!.*\\btai).*china",
+-  CXR: "christmas",
+-  CCK: "\\bcocos|keeling",
+-  COL: "colombia",
+-  COM: "comoro",
+-  COD: "\\bdem.*congo|congo.*\\bdem|congo.*\\bdr|\\bdr.*congo|belgian.?congo|congo.?free.?state|kinshasa|zaire|l.opoldville|drc|droc|rdc",
+-  COG: "^(?!.*\\bdem)(?!.*\\bdr)(?!.*kinshasa)(?!.*zaire)(?!.*belg)(?!.*l.opoldville)(?!.*free).*\\bcongo",
+-  COK: "\\bcook",
+-  CRI: "costa.?rica",
+-  CIV: "ivoire|ivory",
+-  HRV: "croatia",
+-  CUB: "\\bcuba",
+-  CUW: "^(?!.*bonaire).*\\bcura(c|ç)ao",
+-  CYP: "cyprus",
+-  CZE: "^(?=.*rep).*czech|czechia|bohemia",
+-  CSK: "czechoslovakia",
+-  DNK: "denmark",
+-  DJI: "djibouti",
+-  DMA: "dominica(?!n)",
+-  DOM: "dominican.rep",
+-  ECU: "ecuador",
+-  EGY: "egypt",
+-  SLV: "el.?salvador",
+-  GNQ: "guine.*eq|eq.*guine|^(?=.*span).*guinea",
+-  ERI: "eritrea",
+-  EST: "estonia",
+-  ETH: "ethiopia|abyssinia",
+-  FLK: "falkland|malvinas",
+-  FRO: "faroe|faeroe",
+-  FJI: "fiji",
+-  FIN: "finland",
+-  FRA: "^(?!.*\\bdep)(?!.*martinique).*france|french.?republic|\\bgaul",
+-  GUF: "^(?=.*french).*guiana",
+-  PYF: "french.?polynesia|tahiti",
+-  ATF: "french.?southern",
+-  GAB: "gabon",
+-  GMB: "gambia",
+-  GEO: "^(?!.*south).*georgia",
+-  DDR: "german.?democratic.?republic|democratic.?republic.*germany|east.germany",
+-  DEU: "^(?!.*east).*germany|^(?=.*\\bfed.*\\brep).*german",
+-  GHA: "ghana|gold.?coast",
+-  GIB: "gibraltar",
+-  GRC: "greece|hellenic|hellas",
+-  GRL: "greenland",
+-  GRD: "grenada",
+-  GLP: "guadeloupe",
+-  GUM: "\\bguam",
+-  GTM: "guatemala",
+-  GGY: "guernsey",
+-  GIN: "^(?!.*eq)(?!.*span)(?!.*bissau)(?!.*portu)(?!.*new).*guinea",
+-  GNB: "bissau|^(?=.*portu).*guinea",
+-  GUY: "guyana|british.?guiana",
+-  HTI: "haiti",
+-  HMD: "heard.*mcdonald",
+-  VAT: "holy.?see|vatican|papal.?st",
+-  HND: "^(?!.*brit).*honduras",
+-  HKG: "hong.?kong",
+-  HUN: "^(?!.*austr).*hungary",
+-  ISL: "iceland",
+-  IND: "india(?!.*ocea)",
+-  IDN: "indonesia",
+-  IRN: "\\biran|persia",
+-  IRQ: "\\biraq|mesopotamia",
+-  IRL: "ireland",
+-  IMN: "^(?=.*isle).*\\bman",
+-  ISR: "israel",
+-  ITA: "italy",
+-  JAM: "jamaica",
+-  JPN: "japan",
+-  JEY: "jersey",
+-  JOR: "jordan",
+-  KAZ: "kazak",
+-  KEN: "kenya|british.?east.?africa|east.?africa.?prot",
+-  KIR: "kiribati",
+-  PRK: "^(?=.*democrat).*\\bkorea|^(?=.*people).*\\bkorea|^(?=.*north).*\\bkorea|dprk",
+-  KOR: "^(?!.*democrat)(?!.*people)(?!.*north).*\\bkorea",
+-  KWT: "kuwait",
+-  KGZ: "kyrgyz|kirghiz",
+-  LAO: "\\blaos?\\b",
+-  LVA: "latvia",
+-  LBN: "lebanon",
+-  LSO: "lesotho|basuto",
+-  LBR: "liberia",
+-  LBY: "libya",
+-  LIE: "liechtenstein",
+-  LTU: "lithuania",
+-  LUX: "^(?!.*belg).*luxem",
+-  MAC: "maca(o|u)",
+-  MKD: "macedonia|fyrom",
+-  MDG: "madagascar|malagasy",
+-  MWI: "malawi|nyasa",
+-  MYS: "malaysia",
+-  MDV: "maldive",
+-  MLI: "\\bmali\\b",
+-  MLT: "\\bmalta",
+-  MHL: "marshall",
+-  MTQ: "martinique",
+-  MRT: "mauritania",
+-  MUS: "mauritius",
+-  MYT: "\\bmayotte",
+-  MEX: "\\bmexic",
+-  FSM: "micronesia",
+-  MDA: "moldov|b(a|e)ssarabia",
+-  MCO: "monaco",
+-  MNG: "mongolia",
+-  MNE: "^(?!.*serbia).*montenegro",
+-  MSR: "montserrat",
+-  MAR: "morocco|\\bmaroc",
+-  MOZ: "mozambique",
+-  MMR: "myanmar|burma",
+-  NAM: "namibia",
+-  NRU: "nauru",
+-  NPL: "nepal",
+-  NLD: "^(?!.*\\bant)(?!.*\\bcarib).*netherlands",
+-  ANT: "^(?=.*\\bant).*(nether|dutch)",
+-  NCL: "new.?caledonia",
+-  NZL: "new.?zealand",
+-  NIC: "nicaragua",
+-  NER: "\\bniger(?!ia)",
+-  NGA: "nigeria",
+-  NIU: "niue",
+-  NFK: "norfolk",
+-  MNP: "mariana",
+-  NOR: "norway",
+-  OMN: "\\boman|trucial",
+-  PAK: "^(?!.*east).*paki?stan",
+-  PLW: "palau",
+-  PSE: "palestin|\\bgaza|west.?bank",
+-  PAN: "panama",
+-  PNG: "papua|new.?guinea",
+-  PRY: "paraguay",
+-  PER: "peru",
+-  PHL: "philippines",
+-  PCN: "pitcairn",
+-  POL: "poland",
+-  PRT: "portugal",
+-  PRI: "puerto.?rico",
+-  QAT: "qatar",
+-  REU: "r(e|é)union",
+-  ROU: "r(o|u|ou)mania",
+-  RUS: "\\brussia|soviet.?union|u\\.?s\\.?s\\.?r|socialist.?republics",
+-  RWA: "rwanda",
+-  BLM: "barth(e|é)lemy",
+-  SHN: "helena",
+-  KNA: "kitts|\\bnevis",
+-  LCA: "\\blucia",
+-  MAF: "^(?=.*collectivity).*martin|^(?=.*france).*martin(?!ique)|^(?=.*french).*martin(?!ique)",
+-  SPM: "miquelon",
+-  VCT: "vincent",
+-  WSM: "^(?!.*amer).*samoa",
+-  SMR: "san.?marino",
+-  STP: "\\bs(a|ã)o.?tom(e|é)",
+-  SAU: "\\bsa\\w*.?arabia",
+-  SEN: "senegal",
+-  SRB: "^(?!.*monte).*serbia",
+-  SYC: "seychell",
+-  SLE: "sierra",
+-  SGP: "singapore",
+-  SXM: "^(?!.*martin)(?!.*saba).*maarten",
+-  SVK: "^(?!.*cze).*slovak",
+-  SVN: "slovenia",
+-  SLB: "solomon",
+-  SOM: "somali",
+-  ZAF: "\\bs\\w*.?africa",
+-  SGS: "south.?georgia|sandwich",
+-  SSD: "\\bs\\w*.?sudan",
+-  ESP: "spain",
+-  LKA: "sri.?lanka|ceylon",
+-  SDN: "^(?!.*\\bs(?!u)).*sudan",
+-  SUR: "surinam|dutch.?guiana",
+-  SJM: "svalbard",
+-  SWZ: "swaziland",
+-  SWE: "sweden",
+-  CHE: "switz|swiss",
+-  SYR: "syria",
+-  TWN: "taiwan|taipei|formosa",
+-  TJK: "tajik",
+-  TZA: "tanzania",
+-  THA: "thailand|\\bsiam",
+-  TLS: "^(?=.*leste).*timor|^(?=.*east).*timor",
+-  TGO: "togo",
+-  TKL: "tokelau",
+-  TON: "tonga",
+-  TTO: "trinidad|tobago",
+-  TUN: "tunisia",
+-  TUR: "turkey",
+-  TKM: "turkmen",
+-  TCA: "turks",
+-  TUV: "tuvalu",
+-  UGA: "uganda",
+-  UKR: "ukrain",
+-  ARE: "emirates|^u\\.?a\\.?e\\.?$|united.?arab.?em",
+-  GBR: "united.?kingdom|britain|^u\\.?k\\.?$",
+-  USA: "united.?states|\\bu\\.?s\\.?a\\.?\\b|\\bu\\.?s\\.?\\b(?!.*islands)",
+-  UMI: "minor.?outlying.?is",
+-  URY: "uruguay",
+-  UZB: "uzbek",
+-  VUT: "vanuatu|new.?hebrides",
+-  VEN: "venezuela",
+-  VNM: "^(?!.*republic).*viet.?nam|^(?=.*socialist).*viet.?nam",
+-  VGB: "^(?=.*\\bu\\.?\\s?k).*virgin|^(?=.*brit).*virgin|^(?=.*kingdom).*virgin",
+-  VIR: "^(?=.*\\bu\\.?\\s?s).*virgin|^(?=.*states).*virgin",
+-  WLF: "futuna|wallis",
+-  ESH: "western.sahara",
+-  YEM: "^(?!.*arab)(?!.*north)(?!.*sana)(?!.*peo)(?!.*dem)(?!.*south)(?!.*aden)(?!.*\\bp\\.?d\\.?r).*yemen",
+-  YMD: "^(?=.*peo).*yemen|^(?!.*rep)(?=.*dem).*yemen|^(?=.*south).*yemen|^(?=.*aden).*yemen|^(?=.*\\bp\\.?d\\.?r).*yemen",
+-  YUG: "yugoslavia",
+-  ZMB: "zambia|northern.?rhodesia",
+-  EAZ: "zanzibar",
+-  ZWE: "zimbabwe|^(?!.*northern).*rhodesia"
+-};
+-
+-},{}],115:[function(require,module,exports){
+-"use strict"
+-
+-var createThunk = require("./lib/thunk.js")
+-
+-function Procedure() {
+-  this.argTypes = []
+-  this.shimArgs = []
+-  this.arrayArgs = []
+-  this.arrayBlockIndices = []
+-  this.scalarArgs = []
+-  this.offsetArgs = []
+-  this.offsetArgIndex = []
+-  this.indexArgs = []
+-  this.shapeArgs = []
+-  this.funcName = ""
+-  this.pre = null
+-  this.body = null
+-  this.post = null
+-  this.debug = false
+-}
+-
+-function compileCwise(user_args) {
+-  //Create procedure
+-  var proc = new Procedure()
+-  
+-  //Parse blocks
+-  proc.pre    = user_args.pre
+-  proc.body   = user_args.body
+-  proc.post   = user_args.post
+-
+-  //Parse arguments
+-  var proc_args = user_args.args.slice(0)
+-  proc.argTypes = proc_args
+-  for(var i=0; i<proc_args.length; ++i) {
+-    var arg_type = proc_args[i]
+-    if(arg_type === "array" || (typeof arg_type === "object" && arg_type.blockIndices)) {
+-      proc.argTypes[i] = "array"
+-      proc.arrayArgs.push(i)
+-      proc.arrayBlockIndices.push(arg_type.blockIndices ? arg_type.blockIndices : 0)
+-      proc.shimArgs.push("array" + i)
+-      if(i < proc.pre.args.length && proc.pre.args[i].count>0) {
+-        throw new Error("cwise: pre() block may not reference array args")
+-      }
+-      if(i < proc.post.args.length && proc.post.args[i].count>0) {
+-        throw new Error("cwise: post() block may not reference array args")
+-      }
+-    } else if(arg_type === "scalar") {
+-      proc.scalarArgs.push(i)
+-      proc.shimArgs.push("scalar" + i)
+-    } else if(arg_type === "index") {
+-      proc.indexArgs.push(i)
+-      if(i < proc.pre.args.length && proc.pre.args[i].count > 0) {
+-        throw new Error("cwise: pre() block may not reference array index")
+-      }
+-      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
+-        throw new Error("cwise: body() block may not write to array index")
+-      }
+-      if(i < proc.post.args.length && proc.post.args[i].count > 0) {
+-        throw new Error("cwise: post() block may not reference array index")
+-      }
+-    } else if(arg_type === "shape") {
+-      proc.shapeArgs.push(i)
+-      if(i < proc.pre.args.length && proc.pre.args[i].lvalue) {
+-        throw new Error("cwise: pre() block may not write to array shape")
+-      }
+-      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
+-        throw new Error("cwise: body() block may not write to array shape")
+-      }
+-      if(i < proc.post.args.length && proc.post.args[i].lvalue) {
+-        throw new Error("cwise: post() block may not write to array shape")
+-      }
+-    } else if(typeof arg_type === "object" && arg_type.offset) {
+-      proc.argTypes[i] = "offset"
+-      proc.offsetArgs.push({ array: arg_type.array, offset:arg_type.offset })
+-      proc.offsetArgIndex.push(i)
+-    } else {
+-      throw new Error("cwise: Unknown argument type " + proc_args[i])
+-    }
+-  }
+-  
+-  //Make sure at least one array argument was specified
+-  if(proc.arrayArgs.length <= 0) {
+-    throw new Error("cwise: No array arguments specified")
+-  }
+-  
+-  //Make sure arguments are correct
+-  if(proc.pre.args.length > proc_args.length) {
+-    throw new Error("cwise: Too many arguments in pre() block")
+-  }
+-  if(proc.body.args.length > proc_args.length) {
+-    throw new Error("cwise: Too many arguments in body() block")
+-  }
+-  if(proc.post.args.length > proc_args.length) {
+-    throw new Error("cwise: Too many arguments in post() block")
+-  }
+-
+-  //Check debug flag
+-  proc.debug = !!user_args.printCode || !!user_args.debug
+-  
+-  //Retrieve name
+-  proc.funcName = user_args.funcName || "cwise"
+-  
+-  //Read in block size
+-  proc.blockSize = user_args.blockSize || 64
+-
+-  return createThunk(proc)
+-}
+-
+-module.exports = compileCwise
+-
+-},{"./lib/thunk.js":117}],116:[function(require,module,exports){
++},{"./lib/thunk.js":88}],87:[function(require,module,exports){
+ "use strict"
+ 
+ var uniq = require("uniq")
+@@ -13703,7 +10822,7 @@ function generateCWiseOp(proc, typesig) {
+ }
+ module.exports = generateCWiseOp
+ 
+-},{"uniq":459}],117:[function(require,module,exports){
++},{"uniq":451}],88:[function(require,module,exports){
+ "use strict"
+ 
+ // The function below is called when constructing a cwise function object, and does the following:
+@@ -13791,12 +10910,12 @@ function createThunk(proc) {
+ 
+ module.exports = createThunk
+ 
+-},{"./compile.js":116}],118:[function(require,module,exports){
++},{"./compile.js":87}],89:[function(require,module,exports){
+ module.exports = require("cwise-compiler")
+-},{"cwise-compiler":115}],119:[function(require,module,exports){
++},{"cwise-compiler":86}],90:[function(require,module,exports){
+ !function() {
+   var d3 = {
+-    version: "3.5.16"
++    version: "3.5.17"
+   };
+   var d3_arraySlice = [].slice, d3_array = function(list) {
+     return d3_arraySlice.call(list);
+@@ -17321,7 +14440,7 @@ module.exports = require("cwise-compiler")
+         λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
+       }
+     }
+-    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
++    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
+   }
+   function d3_geo_clipCircle(radius) {
+     var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
+@@ -23348,7 +20467,7 @@ module.exports = require("cwise-compiler")
+   });
+   if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
+ }();
+-},{}],120:[function(require,module,exports){
++},{}],91:[function(require,module,exports){
+ "use strict"
+ 
+ var ch = require("incremental-convex-hull")
+@@ -23449,66 +20568,170 @@ function triangulate(points, includePointAtInfinity) {
+   for(var i=0; i<=d; ++i) {
+     y[i] = 0.0
+   }
+-  y[d] = u
+-
+-  dpoints[0] = y.slice()
+-  dindex[0] = -1
+-
+-  for(var i=0; i<=d; ++i) {
+-    var x = y.slice()
+-    x[i] = 1
+-    dpoints[i+1] = x
+-    dindex[i+1] = -1
++  y[d] = u
++
++  dpoints[0] = y.slice()
++  dindex[0] = -1
++
++  for(var i=0; i<=d; ++i) {
++    var x = y.slice()
++    x[i] = 1
++    dpoints[i+1] = x
++    dindex[i+1] = -1
++  }
++
++  //Copy rest of the points over
++  for(var i=0; i<n; ++i) {
++    var h = lifted[i]
++    dpoints[i + d + 1] = h.point
++    dindex[i + d + 1] =  h.index
++  }
++
++  //Construct convex hull
++  var hull = ch(dpoints, false)
++  if(includePointAtInfinity) {
++    hull = hull.filter(function(cell) {
++      var count = 0
++      for(var j=0; j<=d; ++j) {
++        var v = dindex[cell[j]]
++        if(v < 0) {
++          if(++count >= 2) {
++            return false
++          }
++        }
++        cell[j] = v
++      }
++      return true
++    })
++  } else {
++    hull = hull.filter(function(cell) {
++      for(var i=0; i<=d; ++i) {
++        var v = dindex[cell[i]]
++        if(v < 0) {
++          return false
++        }
++        cell[i] = v
++      }
++      return true
++    })
++  }
++
++  if(d & 1) {
++    for(var i=0; i<hull.length; ++i) {
++      var h = hull[i]
++      var x = h[0]
++      h[0] = h[1]
++      h[1] = x
++    }
++  }
++
++  return hull
++}
++},{"incremental-convex-hull":224,"uniq":451}],92:[function(require,module,exports){
++(function (Buffer){
++var hasTypedArrays = false
++if(typeof Float64Array !== "undefined") {
++  var DOUBLE_VIEW = new Float64Array(1)
++    , UINT_VIEW   = new Uint32Array(DOUBLE_VIEW.buffer)
++  DOUBLE_VIEW[0] = 1.0
++  hasTypedArrays = true
++  if(UINT_VIEW[1] === 0x3ff00000) {
++    //Use little endian
++    module.exports = function doubleBitsLE(n) {
++      DOUBLE_VIEW[0] = n
++      return [ UINT_VIEW[0], UINT_VIEW[1] ]
++    }
++    function toDoubleLE(lo, hi) {
++      UINT_VIEW[0] = lo
++      UINT_VIEW[1] = hi
++      return DOUBLE_VIEW[0]
++    }
++    module.exports.pack = toDoubleLE
++    function lowUintLE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[0]
++    }
++    module.exports.lo = lowUintLE
++    function highUintLE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[1]
++    }
++    module.exports.hi = highUintLE
++  } else if(UINT_VIEW[0] === 0x3ff00000) {
++    //Use big endian
++    module.exports = function doubleBitsBE(n) {
++      DOUBLE_VIEW[0] = n
++      return [ UINT_VIEW[1], UINT_VIEW[0] ]
++    }
++    function toDoubleBE(lo, hi) {
++      UINT_VIEW[1] = lo
++      UINT_VIEW[0] = hi
++      return DOUBLE_VIEW[0]
++    }
++    module.exports.pack = toDoubleBE
++    function lowUintBE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[1]
++    }
++    module.exports.lo = lowUintBE
++    function highUintBE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[0]
++    }
++    module.exports.hi = highUintBE
++  } else {
++    hasTypedArrays = false
++  }
++}
++if(!hasTypedArrays) {
++  var buffer = new Buffer(8)
++  module.exports = function doubleBits(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return [ buffer.readUInt32LE(0, true), buffer.readUInt32LE(4, true) ]
++  }
++  function toDouble(lo, hi) {
++    buffer.writeUInt32LE(lo, 0, true)
++    buffer.writeUInt32LE(hi, 4, true)
++    return buffer.readDoubleLE(0, true)
++  }
++  module.exports.pack = toDouble  
++  function lowUint(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return buffer.readUInt32LE(0, true)
++  }
++  module.exports.lo = lowUint
++  function highUint(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return buffer.readUInt32LE(4, true)
+   }
++  module.exports.hi = highUint
++}
+ 
+-  //Copy rest of the points over
+-  for(var i=0; i<n; ++i) {
+-    var h = lifted[i]
+-    dpoints[i + d + 1] = h.point
+-    dindex[i + d + 1] =  h.index
+-  }
++module.exports.sign = function(n) {
++  return module.exports.hi(n) >>> 31
++}
+ 
+-  //Construct convex hull
+-  var hull = ch(dpoints, false)
+-  if(includePointAtInfinity) {
+-    hull = hull.filter(function(cell) {
+-      var count = 0
+-      for(var j=0; j<=d; ++j) {
+-        var v = dindex[cell[j]]
+-        if(v < 0) {
+-          if(++count >= 2) {
+-            return false
+-          }
+-        }
+-        cell[j] = v
+-      }
+-      return true
+-    })
+-  } else {
+-    hull = hull.filter(function(cell) {
+-      for(var i=0; i<=d; ++i) {
+-        var v = dindex[cell[i]]
+-        if(v < 0) {
+-          return false
+-        }
+-        cell[i] = v
+-      }
+-      return true
+-    })
+-  }
++module.exports.exponent = function(n) {
++  var b = module.exports.hi(n)
++  return ((b<<1) >>> 21) - 1023
++}
+ 
+-  if(d & 1) {
+-    for(var i=0; i<hull.length; ++i) {
+-      var h = hull[i]
+-      var x = h[0]
+-      h[0] = h[1]
+-      h[1] = x
+-    }
++module.exports.fraction = function(n) {
++  var lo = module.exports.lo(n)
++  var hi = module.exports.hi(n)
++  var b = hi & ((1<<20) - 1)
++  if(hi & 0x7ff00000) {
++    b += (1<<20)
+   }
++  return [lo, b]
++}
+ 
+-  return hull
++module.exports.denormalized = function(n) {
++  var hi = module.exports.hi(n)
++  return !(hi & 0x7ff00000)
+ }
+-},{"incremental-convex-hull":241,"uniq":459}],121:[function(require,module,exports){
++}).call(this,require("buffer").Buffer)
++},{"buffer":59}],93:[function(require,module,exports){
+ "use strict"
+ 
+ function dupe_array(count, value, i) {
+@@ -23558,33654 +20781,38011 @@ function dupe(count, value) {
+ }
+ 
+ module.exports = dupe
+-},{}],122:[function(require,module,exports){
++},{}],94:[function(require,module,exports){
++"use strict"
++
++module.exports = edgeToAdjacency
++
++var uniq = require("uniq")
++
++function edgeToAdjacency(edges, numVertices) {
++  var numEdges = edges.length
++  if(typeof numVertices !== "number") {
++    numVertices = 0
++    for(var i=0; i<numEdges; ++i) {
++      var e = edges[i]
++      numVertices = Math.max(numVertices, e[0], e[1])
++    }
++    numVertices = (numVertices|0) + 1
++  }
++  numVertices = numVertices|0
++  var adj = new Array(numVertices)
++  for(var i=0; i<numVertices; ++i) {
++    adj[i] = []
++  }
++  for(var i=0; i<numEdges; ++i) {
++    var e = edges[i]
++    adj[e[0]].push(e[1])
++    adj[e[1]].push(e[0])
++  }
++  for(var j=0; j<numVertices; ++j) {
++    uniq(adj[j], function(a, b) {
++      return a - b
++    })
++  }
++  return adj
++}
++},{"uniq":451}],95:[function(require,module,exports){
+ (function (process,global){
+ /*!
+  * @overview es6-promise - a tiny implementation of Promises/A+.
+  * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
+  * @license   Licensed under MIT license
+- *            See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
+- * @version   3.1.2
++ *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
++ * @version   3.3.1
+  */
+ 
+-(function() {
+-    "use strict";
+-    function lib$es6$promise$utils$$objectOrFunction(x) {
+-      return typeof x === 'function' || (typeof x === 'object' && x !== null);
+-    }
++(function (global, factory) {
++    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
++    typeof define === 'function' && define.amd ? define(factory) :
++    (global.ES6Promise = factory());
++}(this, (function () { 'use strict';
+ 
+-    function lib$es6$promise$utils$$isFunction(x) {
+-      return typeof x === 'function';
+-    }
++function objectOrFunction(x) {
++  return typeof x === 'function' || typeof x === 'object' && x !== null;
++}
+ 
+-    function lib$es6$promise$utils$$isMaybeThenable(x) {
+-      return typeof x === 'object' && x !== null;
+-    }
++function isFunction(x) {
++  return typeof x === 'function';
++}
+ 
+-    var lib$es6$promise$utils$$_isArray;
+-    if (!Array.isArray) {
+-      lib$es6$promise$utils$$_isArray = function (x) {
+-        return Object.prototype.toString.call(x) === '[object Array]';
+-      };
++var _isArray = undefined;
++if (!Array.isArray) {
++  _isArray = function (x) {
++    return Object.prototype.toString.call(x) === '[object Array]';
++  };
++} else {
++  _isArray = Array.isArray;
++}
++
++var isArray = _isArray;
++
++var len = 0;
++var vertxNext = undefined;
++var customSchedulerFn = undefined;
++
++var asap = function asap(callback, arg) {
++  queue[len] = callback;
++  queue[len + 1] = arg;
++  len += 2;
++  if (len === 2) {
++    // If len is 2, that means that we need to schedule an async flush.
++    // If additional callbacks are queued before the queue is flushed, they
++    // will be processed by this flush that we are scheduling.
++    if (customSchedulerFn) {
++      customSchedulerFn(flush);
+     } else {
+-      lib$es6$promise$utils$$_isArray = Array.isArray;
+-    }
+-
+-    var lib$es6$promise$utils$$isArray = lib$es6$promise$utils$$_isArray;
+-    var lib$es6$promise$asap$$len = 0;
+-    var lib$es6$promise$asap$$vertxNext;
+-    var lib$es6$promise$asap$$customSchedulerFn;
+-
+-    var lib$es6$promise$asap$$asap = function asap(callback, arg) {
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len] = callback;
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len + 1] = arg;
+-      lib$es6$promise$asap$$len += 2;
+-      if (lib$es6$promise$asap$$len === 2) {
+-        // If len is 2, that means that we need to schedule an async flush.
+-        // If additional callbacks are queued before the queue is flushed, they
+-        // will be processed by this flush that we are scheduling.
+-        if (lib$es6$promise$asap$$customSchedulerFn) {
+-          lib$es6$promise$asap$$customSchedulerFn(lib$es6$promise$asap$$flush);
+-        } else {
+-          lib$es6$promise$asap$$scheduleFlush();
+-        }
+-      }
++      scheduleFlush();
+     }
++  }
++};
+ 
+-    function lib$es6$promise$asap$$setScheduler(scheduleFn) {
+-      lib$es6$promise$asap$$customSchedulerFn = scheduleFn;
+-    }
++function setScheduler(scheduleFn) {
++  customSchedulerFn = scheduleFn;
++}
+ 
+-    function lib$es6$promise$asap$$setAsap(asapFn) {
+-      lib$es6$promise$asap$$asap = asapFn;
+-    }
++function setAsap(asapFn) {
++  asap = asapFn;
++}
+ 
+-    var lib$es6$promise$asap$$browserWindow = (typeof window !== 'undefined') ? window : undefined;
+-    var lib$es6$promise$asap$$browserGlobal = lib$es6$promise$asap$$browserWindow || {};
+-    var lib$es6$promise$asap$$BrowserMutationObserver = lib$es6$promise$asap$$browserGlobal.MutationObserver || lib$es6$promise$asap$$browserGlobal.WebKitMutationObserver;
+-    var lib$es6$promise$asap$$isNode = typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';
++var browserWindow = typeof window !== 'undefined' ? window : undefined;
++var browserGlobal = browserWindow || {};
++var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
++var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]';
+ 
+-    // test for web worker but not in IE10
+-    var lib$es6$promise$asap$$isWorker = typeof Uint8ClampedArray !== 'undefined' &&
+-      typeof importScripts !== 'undefined' &&
+-      typeof MessageChannel !== 'undefined';
++// test for web worker but not in IE10
++var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined';
+ 
+-    // node
+-    function lib$es6$promise$asap$$useNextTick() {
+-      // node version 0.10.x displays a deprecation warning when nextTick is used recursively
+-      // see https://github.com/cujojs/when/issues/410 for details
+-      return function() {
+-        process.nextTick(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// node
++function useNextTick() {
++  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
++  // see https://github.com/cujojs/when/issues/410 for details
++  return function () {
++    return process.nextTick(flush);
++  };
++}
+ 
+-    // vertx
+-    function lib$es6$promise$asap$$useVertxTimer() {
+-      return function() {
+-        lib$es6$promise$asap$$vertxNext(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// vertx
++function useVertxTimer() {
++  return function () {
++    vertxNext(flush);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useMutationObserver() {
+-      var iterations = 0;
+-      var observer = new lib$es6$promise$asap$$BrowserMutationObserver(lib$es6$promise$asap$$flush);
+-      var node = document.createTextNode('');
+-      observer.observe(node, { characterData: true });
++function useMutationObserver() {
++  var iterations = 0;
++  var observer = new BrowserMutationObserver(flush);
++  var node = document.createTextNode('');
++  observer.observe(node, { characterData: true });
+ 
+-      return function() {
+-        node.data = (iterations = ++iterations % 2);
+-      };
+-    }
++  return function () {
++    node.data = iterations = ++iterations % 2;
++  };
++}
+ 
+-    // web worker
+-    function lib$es6$promise$asap$$useMessageChannel() {
+-      var channel = new MessageChannel();
+-      channel.port1.onmessage = lib$es6$promise$asap$$flush;
+-      return function () {
+-        channel.port2.postMessage(0);
+-      };
+-    }
++// web worker
++function useMessageChannel() {
++  var channel = new MessageChannel();
++  channel.port1.onmessage = flush;
++  return function () {
++    return channel.port2.postMessage(0);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useSetTimeout() {
+-      return function() {
+-        setTimeout(lib$es6$promise$asap$$flush, 1);
+-      };
+-    }
++function useSetTimeout() {
++  // Store setTimeout reference so es6-promise will be unaffected by
++  // other code modifying setTimeout (like sinon.useFakeTimers())
++  var globalSetTimeout = setTimeout;
++  return function () {
++    return globalSetTimeout(flush, 1);
++  };
++}
+ 
+-    var lib$es6$promise$asap$$queue = new Array(1000);
+-    function lib$es6$promise$asap$$flush() {
+-      for (var i = 0; i < lib$es6$promise$asap$$len; i+=2) {
+-        var callback = lib$es6$promise$asap$$queue[i];
+-        var arg = lib$es6$promise$asap$$queue[i+1];
++var queue = new Array(1000);
++function flush() {
++  for (var i = 0; i < len; i += 2) {
++    var callback = queue[i];
++    var arg = queue[i + 1];
+ 
+-        callback(arg);
++    callback(arg);
+ 
+-        lib$es6$promise$asap$$queue[i] = undefined;
+-        lib$es6$promise$asap$$queue[i+1] = undefined;
+-      }
++    queue[i] = undefined;
++    queue[i + 1] = undefined;
++  }
+ 
+-      lib$es6$promise$asap$$len = 0;
+-    }
++  len = 0;
++}
+ 
+-    function lib$es6$promise$asap$$attemptVertx() {
+-      try {
+-        var r = require;
+-        var vertx = r('vertx');
+-        lib$es6$promise$asap$$vertxNext = vertx.runOnLoop || vertx.runOnContext;
+-        return lib$es6$promise$asap$$useVertxTimer();
+-      } catch(e) {
+-        return lib$es6$promise$asap$$useSetTimeout();
+-      }
+-    }
+-
+-    var lib$es6$promise$asap$$scheduleFlush;
+-    // Decide what async method to use to triggering processing of queued callbacks:
+-    if (lib$es6$promise$asap$$isNode) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useNextTick();
+-    } else if (lib$es6$promise$asap$$BrowserMutationObserver) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMutationObserver();
+-    } else if (lib$es6$promise$asap$$isWorker) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMessageChannel();
+-    } else if (lib$es6$promise$asap$$browserWindow === undefined && typeof require === 'function') {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$attemptVertx();
+-    } else {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useSetTimeout();
+-    }
+-    function lib$es6$promise$then$$then(onFulfillment, onRejection) {
+-      var parent = this;
+-      var state = parent._state;
++function attemptVertx() {
++  try {
++    var r = require;
++    var vertx = r('vertx');
++    vertxNext = vertx.runOnLoop || vertx.runOnContext;
++    return useVertxTimer();
++  } catch (e) {
++    return useSetTimeout();
++  }
++}
+ 
+-      if (state === lib$es6$promise$$internal$$FULFILLED && !onFulfillment || state === lib$es6$promise$$internal$$REJECTED && !onRejection) {
+-        return this;
+-      }
++var scheduleFlush = undefined;
++// Decide what async method to use to triggering processing of queued callbacks:
++if (isNode) {
++  scheduleFlush = useNextTick();
++} else if (BrowserMutationObserver) {
++  scheduleFlush = useMutationObserver();
++} else if (isWorker) {
++  scheduleFlush = useMessageChannel();
++} else if (browserWindow === undefined && typeof require === 'function') {
++  scheduleFlush = attemptVertx();
++} else {
++  scheduleFlush = useSetTimeout();
++}
+ 
+-      var child = new this.constructor(lib$es6$promise$$internal$$noop);
+-      var result = parent._result;
++function then(onFulfillment, onRejection) {
++  var _arguments = arguments;
+ 
+-      if (state) {
+-        var callback = arguments[state - 1];
+-        lib$es6$promise$asap$$asap(function(){
+-          lib$es6$promise$$internal$$invokeCallback(state, child, callback, result);
+-        });
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection);
+-      }
++  var parent = this;
+ 
+-      return child;
+-    }
+-    var lib$es6$promise$then$$default = lib$es6$promise$then$$then;
+-    function lib$es6$promise$promise$resolve$$resolve(object) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++  var child = new this.constructor(noop);
+ 
+-      if (object && typeof object === 'object' && object.constructor === Constructor) {
+-        return object;
+-      }
++  if (child[PROMISE_ID] === undefined) {
++    makePromise(child);
++  }
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$resolve(promise, object);
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$resolve$$default = lib$es6$promise$promise$resolve$$resolve;
++  var _state = parent._state;
++
++  if (_state) {
++    (function () {
++      var callback = _arguments[_state - 1];
++      asap(function () {
++        return invokeCallback(_state, child, callback, parent._result);
++      });
++    })();
++  } else {
++    subscribe(parent, child, onFulfillment, onRejection);
++  }
+ 
+-    function lib$es6$promise$$internal$$noop() {}
++  return child;
++}
+ 
+-    var lib$es6$promise$$internal$$PENDING   = void 0;
+-    var lib$es6$promise$$internal$$FULFILLED = 1;
+-    var lib$es6$promise$$internal$$REJECTED  = 2;
++/**
++  `Promise.resolve` returns a promise that will become resolved with the
++  passed `value`. It is shorthand for the following:
+ 
+-    var lib$es6$promise$$internal$$GET_THEN_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    resolve(1);
++  });
+ 
+-    function lib$es6$promise$$internal$$selfFulfillment() {
+-      return new TypeError("You cannot resolve a promise with itself");
+-    }
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
+ 
+-    function lib$es6$promise$$internal$$cannotReturnOwn() {
+-      return new TypeError('A promises callback cannot return that same promise.');
+-    }
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-    function lib$es6$promise$$internal$$getThen(promise) {
+-      try {
+-        return promise.then;
+-      } catch(error) {
+-        lib$es6$promise$$internal$$GET_THEN_ERROR.error = error;
+-        return lib$es6$promise$$internal$$GET_THEN_ERROR;
+-      }
+-    }
++  ```javascript
++  let promise = Promise.resolve(1);
+ 
+-    function lib$es6$promise$$internal$$tryThen(then, value, fulfillmentHandler, rejectionHandler) {
+-      try {
+-        then.call(value, fulfillmentHandler, rejectionHandler);
+-      } catch(e) {
+-        return e;
+-      }
+-    }
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
++
++  @method resolve
++  @static
++  @param {Any} value value that the returned promise will be resolved with
++  Useful for tooling.
++  @return {Promise} a promise that will become fulfilled with the given
++  `value`
++*/
++function resolve(object) {
++  /*jshint validthis:true */
++  var Constructor = this;
+ 
+-    function lib$es6$promise$$internal$$handleForeignThenable(promise, thenable, then) {
+-       lib$es6$promise$asap$$asap(function(promise) {
+-        var sealed = false;
+-        var error = lib$es6$promise$$internal$$tryThen(then, thenable, function(value) {
+-          if (sealed) { return; }
+-          sealed = true;
+-          if (thenable !== value) {
+-            lib$es6$promise$$internal$$resolve(promise, value);
+-          } else {
+-            lib$es6$promise$$internal$$fulfill(promise, value);
+-          }
+-        }, function(reason) {
+-          if (sealed) { return; }
+-          sealed = true;
++  if (object && typeof object === 'object' && object.constructor === Constructor) {
++    return object;
++  }
+ 
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        }, 'Settle: ' + (promise._label || ' unknown promise'));
++  var promise = new Constructor(noop);
++  _resolve(promise, object);
++  return promise;
++}
+ 
+-        if (!sealed && error) {
+-          sealed = true;
+-          lib$es6$promise$$internal$$reject(promise, error);
+-        }
+-      }, promise);
+-    }
++var PROMISE_ID = Math.random().toString(36).substring(16);
+ 
+-    function lib$es6$promise$$internal$$handleOwnThenable(promise, thenable) {
+-      if (thenable._state === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, thenable._result);
+-      } else if (thenable._state === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, thenable._result);
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(thenable, undefined, function(value) {
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      }
+-    }
++function noop() {}
+ 
+-    function lib$es6$promise$$internal$$handleMaybeThenable(promise, maybeThenable, then) {
+-      if (maybeThenable.constructor === promise.constructor &&
+-          then === lib$es6$promise$then$$default &&
+-          constructor.resolve === lib$es6$promise$promise$resolve$$default) {
+-        lib$es6$promise$$internal$$handleOwnThenable(promise, maybeThenable);
+-      } else {
+-        if (then === lib$es6$promise$$internal$$GET_THEN_ERROR) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$GET_THEN_ERROR.error);
+-        } else if (then === undefined) {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        } else if (lib$es6$promise$utils$$isFunction(then)) {
+-          lib$es6$promise$$internal$$handleForeignThenable(promise, maybeThenable, then);
+-        } else {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        }
+-      }
+-    }
++var PENDING = void 0;
++var FULFILLED = 1;
++var REJECTED = 2;
+ 
+-    function lib$es6$promise$$internal$$resolve(promise, value) {
+-      if (promise === value) {
+-        lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$selfFulfillment());
+-      } else if (lib$es6$promise$utils$$objectOrFunction(value)) {
+-        lib$es6$promise$$internal$$handleMaybeThenable(promise, value, lib$es6$promise$$internal$$getThen(value));
+-      } else {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      }
+-    }
++var GET_THEN_ERROR = new ErrorObject();
+ 
+-    function lib$es6$promise$$internal$$publishRejection(promise) {
+-      if (promise._onerror) {
+-        promise._onerror(promise._result);
+-      }
++function selfFulfillment() {
++  return new TypeError("You cannot resolve a promise with itself");
++}
+ 
+-      lib$es6$promise$$internal$$publish(promise);
+-    }
++function cannotReturnOwn() {
++  return new TypeError('A promises callback cannot return that same promise.');
++}
+ 
+-    function lib$es6$promise$$internal$$fulfill(promise, value) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
++function getThen(promise) {
++  try {
++    return promise.then;
++  } catch (error) {
++    GET_THEN_ERROR.error = error;
++    return GET_THEN_ERROR;
++  }
++}
+ 
+-      promise._result = value;
+-      promise._state = lib$es6$promise$$internal$$FULFILLED;
++function tryThen(then, value, fulfillmentHandler, rejectionHandler) {
++  try {
++    then.call(value, fulfillmentHandler, rejectionHandler);
++  } catch (e) {
++    return e;
++  }
++}
+ 
+-      if (promise._subscribers.length !== 0) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, promise);
++function handleForeignThenable(promise, thenable, then) {
++  asap(function (promise) {
++    var sealed = false;
++    var error = tryThen(then, thenable, function (value) {
++      if (sealed) {
++        return;
+       }
++      sealed = true;
++      if (thenable !== value) {
++        _resolve(promise, value);
++      } else {
++        fulfill(promise, value);
++      }
++    }, function (reason) {
++      if (sealed) {
++        return;
++      }
++      sealed = true;
++
++      _reject(promise, reason);
++    }, 'Settle: ' + (promise._label || ' unknown promise'));
++
++    if (!sealed && error) {
++      sealed = true;
++      _reject(promise, error);
+     }
++  }, promise);
++}
+ 
+-    function lib$es6$promise$$internal$$reject(promise, reason) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
+-      promise._state = lib$es6$promise$$internal$$REJECTED;
+-      promise._result = reason;
++function handleOwnThenable(promise, thenable) {
++  if (thenable._state === FULFILLED) {
++    fulfill(promise, thenable._result);
++  } else if (thenable._state === REJECTED) {
++    _reject(promise, thenable._result);
++  } else {
++    subscribe(thenable, undefined, function (value) {
++      return _resolve(promise, value);
++    }, function (reason) {
++      return _reject(promise, reason);
++    });
++  }
++}
+ 
+-      lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publishRejection, promise);
++function handleMaybeThenable(promise, maybeThenable, then$$) {
++  if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) {
++    handleOwnThenable(promise, maybeThenable);
++  } else {
++    if (then$$ === GET_THEN_ERROR) {
++      _reject(promise, GET_THEN_ERROR.error);
++    } else if (then$$ === undefined) {
++      fulfill(promise, maybeThenable);
++    } else if (isFunction(then$$)) {
++      handleForeignThenable(promise, maybeThenable, then$$);
++    } else {
++      fulfill(promise, maybeThenable);
+     }
++  }
++}
++
++function _resolve(promise, value) {
++  if (promise === value) {
++    _reject(promise, selfFulfillment());
++  } else if (objectOrFunction(value)) {
++    handleMaybeThenable(promise, value, getThen(value));
++  } else {
++    fulfill(promise, value);
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection) {
+-      var subscribers = parent._subscribers;
+-      var length = subscribers.length;
++function publishRejection(promise) {
++  if (promise._onerror) {
++    promise._onerror(promise._result);
++  }
+ 
+-      parent._onerror = null;
++  publish(promise);
++}
+ 
+-      subscribers[length] = child;
+-      subscribers[length + lib$es6$promise$$internal$$FULFILLED] = onFulfillment;
+-      subscribers[length + lib$es6$promise$$internal$$REJECTED]  = onRejection;
++function fulfill(promise, value) {
++  if (promise._state !== PENDING) {
++    return;
++  }
+ 
+-      if (length === 0 && parent._state) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, parent);
+-      }
+-    }
++  promise._result = value;
++  promise._state = FULFILLED;
+ 
+-    function lib$es6$promise$$internal$$publish(promise) {
+-      var subscribers = promise._subscribers;
+-      var settled = promise._state;
++  if (promise._subscribers.length !== 0) {
++    asap(publish, promise);
++  }
++}
+ 
+-      if (subscribers.length === 0) { return; }
++function _reject(promise, reason) {
++  if (promise._state !== PENDING) {
++    return;
++  }
++  promise._state = REJECTED;
++  promise._result = reason;
+ 
+-      var child, callback, detail = promise._result;
++  asap(publishRejection, promise);
++}
+ 
+-      for (var i = 0; i < subscribers.length; i += 3) {
+-        child = subscribers[i];
+-        callback = subscribers[i + settled];
++function subscribe(parent, child, onFulfillment, onRejection) {
++  var _subscribers = parent._subscribers;
++  var length = _subscribers.length;
+ 
+-        if (child) {
+-          lib$es6$promise$$internal$$invokeCallback(settled, child, callback, detail);
+-        } else {
+-          callback(detail);
+-        }
+-      }
++  parent._onerror = null;
+ 
+-      promise._subscribers.length = 0;
+-    }
++  _subscribers[length] = child;
++  _subscribers[length + FULFILLED] = onFulfillment;
++  _subscribers[length + REJECTED] = onRejection;
+ 
+-    function lib$es6$promise$$internal$$ErrorObject() {
+-      this.error = null;
+-    }
++  if (length === 0 && parent._state) {
++    asap(publish, parent);
++  }
++}
+ 
+-    var lib$es6$promise$$internal$$TRY_CATCH_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++function publish(promise) {
++  var subscribers = promise._subscribers;
++  var settled = promise._state;
+ 
+-    function lib$es6$promise$$internal$$tryCatch(callback, detail) {
+-      try {
+-        return callback(detail);
+-      } catch(e) {
+-        lib$es6$promise$$internal$$TRY_CATCH_ERROR.error = e;
+-        return lib$es6$promise$$internal$$TRY_CATCH_ERROR;
+-      }
++  if (subscribers.length === 0) {
++    return;
++  }
++
++  var child = undefined,
++      callback = undefined,
++      detail = promise._result;
++
++  for (var i = 0; i < subscribers.length; i += 3) {
++    child = subscribers[i];
++    callback = subscribers[i + settled];
++
++    if (child) {
++      invokeCallback(settled, child, callback, detail);
++    } else {
++      callback(detail);
+     }
++  }
++
++  promise._subscribers.length = 0;
++}
+ 
+-    function lib$es6$promise$$internal$$invokeCallback(settled, promise, callback, detail) {
+-      var hasCallback = lib$es6$promise$utils$$isFunction(callback),
+-          value, error, succeeded, failed;
++function ErrorObject() {
++  this.error = null;
++}
+ 
+-      if (hasCallback) {
+-        value = lib$es6$promise$$internal$$tryCatch(callback, detail);
++var TRY_CATCH_ERROR = new ErrorObject();
+ 
+-        if (value === lib$es6$promise$$internal$$TRY_CATCH_ERROR) {
+-          failed = true;
+-          error = value.error;
+-          value = null;
+-        } else {
+-          succeeded = true;
+-        }
++function tryCatch(callback, detail) {
++  try {
++    return callback(detail);
++  } catch (e) {
++    TRY_CATCH_ERROR.error = e;
++    return TRY_CATCH_ERROR;
++  }
++}
+ 
+-        if (promise === value) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$cannotReturnOwn());
+-          return;
+-        }
++function invokeCallback(settled, promise, callback, detail) {
++  var hasCallback = isFunction(callback),
++      value = undefined,
++      error = undefined,
++      succeeded = undefined,
++      failed = undefined;
+ 
+-      } else {
+-        value = detail;
+-        succeeded = true;
+-      }
++  if (hasCallback) {
++    value = tryCatch(callback, detail);
+ 
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) {
+-        // noop
+-      } else if (hasCallback && succeeded) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      } else if (failed) {
+-        lib$es6$promise$$internal$$reject(promise, error);
+-      } else if (settled === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      } else if (settled === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, value);
+-      }
++    if (value === TRY_CATCH_ERROR) {
++      failed = true;
++      error = value.error;
++      value = null;
++    } else {
++      succeeded = true;
+     }
+ 
+-    function lib$es6$promise$$internal$$initializePromise(promise, resolver) {
+-      try {
+-        resolver(function resolvePromise(value){
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function rejectPromise(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      } catch(e) {
+-        lib$es6$promise$$internal$$reject(promise, e);
+-      }
++    if (promise === value) {
++      _reject(promise, cannotReturnOwn());
++      return;
+     }
++  } else {
++    value = detail;
++    succeeded = true;
++  }
+ 
+-    function lib$es6$promise$promise$all$$all(entries) {
+-      return new lib$es6$promise$enumerator$$default(this, entries).promise;
++  if (promise._state !== PENDING) {
++    // noop
++  } else if (hasCallback && succeeded) {
++      _resolve(promise, value);
++    } else if (failed) {
++      _reject(promise, error);
++    } else if (settled === FULFILLED) {
++      fulfill(promise, value);
++    } else if (settled === REJECTED) {
++      _reject(promise, value);
+     }
+-    var lib$es6$promise$promise$all$$default = lib$es6$promise$promise$all$$all;
+-    function lib$es6$promise$promise$race$$race(entries) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++}
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
++function initializePromise(promise, resolver) {
++  try {
++    resolver(function resolvePromise(value) {
++      _resolve(promise, value);
++    }, function rejectPromise(reason) {
++      _reject(promise, reason);
++    });
++  } catch (e) {
++    _reject(promise, e);
++  }
++}
+ 
+-      if (!lib$es6$promise$utils$$isArray(entries)) {
+-        lib$es6$promise$$internal$$reject(promise, new TypeError('You must pass an array to race.'));
+-        return promise;
+-      }
++var id = 0;
++function nextId() {
++  return id++;
++}
+ 
+-      var length = entries.length;
++function makePromise(promise) {
++  promise[PROMISE_ID] = id++;
++  promise._state = undefined;
++  promise._result = undefined;
++  promise._subscribers = [];
++}
+ 
+-      function onFulfillment(value) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      }
++function Enumerator(Constructor, input) {
++  this._instanceConstructor = Constructor;
++  this.promise = new Constructor(noop);
+ 
+-      function onRejection(reason) {
+-        lib$es6$promise$$internal$$reject(promise, reason);
+-      }
++  if (!this.promise[PROMISE_ID]) {
++    makePromise(this.promise);
++  }
+ 
+-      for (var i = 0; promise._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        lib$es6$promise$$internal$$subscribe(Constructor.resolve(entries[i]), undefined, onFulfillment, onRejection);
+-      }
++  if (isArray(input)) {
++    this._input = input;
++    this.length = input.length;
++    this._remaining = input.length;
+ 
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$race$$default = lib$es6$promise$promise$race$$race;
+-    function lib$es6$promise$promise$reject$$reject(reason) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$reject(promise, reason);
+-      return promise;
++    this._result = new Array(this.length);
++
++    if (this.length === 0) {
++      fulfill(this.promise, this._result);
++    } else {
++      this.length = this.length || 0;
++      this._enumerate();
++      if (this._remaining === 0) {
++        fulfill(this.promise, this._result);
++      }
+     }
+-    var lib$es6$promise$promise$reject$$default = lib$es6$promise$promise$reject$$reject;
++  } else {
++    _reject(this.promise, validationError());
++  }
++}
++
++function validationError() {
++  return new Error('Array Methods must be provided an Array');
++};
+ 
+-    var lib$es6$promise$promise$$counter = 0;
++Enumerator.prototype._enumerate = function () {
++  var length = this.length;
++  var _input = this._input;
+ 
+-    function lib$es6$promise$promise$$needsResolver() {
+-      throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
+-    }
++  for (var i = 0; this._state === PENDING && i < length; i++) {
++    this._eachEntry(_input[i], i);
++  }
++};
+ 
+-    function lib$es6$promise$promise$$needsNew() {
+-      throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++Enumerator.prototype._eachEntry = function (entry, i) {
++  var c = this._instanceConstructor;
++  var resolve$$ = c.resolve;
++
++  if (resolve$$ === resolve) {
++    var _then = getThen(entry);
++
++    if (_then === then && entry._state !== PENDING) {
++      this._settledAt(entry._state, i, entry._result);
++    } else if (typeof _then !== 'function') {
++      this._remaining--;
++      this._result[i] = entry;
++    } else if (c === Promise) {
++      var promise = new c(noop);
++      handleMaybeThenable(promise, entry, _then);
++      this._willSettleAt(promise, i);
++    } else {
++      this._willSettleAt(new c(function (resolve$$) {
++        return resolve$$(entry);
++      }), i);
+     }
++  } else {
++    this._willSettleAt(resolve$$(entry), i);
++  }
++};
+ 
+-    var lib$es6$promise$promise$$default = lib$es6$promise$promise$$Promise;
+-    /**
+-      Promise objects represent the eventual result of an asynchronous operation. The
+-      primary way of interacting with a promise is through its `then` method, which
+-      registers callbacks to receive either a promise's eventual value or the reason
+-      why the promise cannot be fulfilled.
++Enumerator.prototype._settledAt = function (state, i, value) {
++  var promise = this.promise;
+ 
+-      Terminology
+-      -----------
++  if (promise._state === PENDING) {
++    this._remaining--;
+ 
+-      - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
+-      - `thenable` is an object or function that defines a `then` method.
+-      - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
+-      - `exception` is a value that is thrown using the throw statement.
+-      - `reason` is a value that indicates why a promise was rejected.
+-      - `settled` the final resting state of a promise, fulfilled or rejected.
++    if (state === REJECTED) {
++      _reject(promise, value);
++    } else {
++      this._result[i] = value;
++    }
++  }
+ 
+-      A promise can be in one of three states: pending, fulfilled, or rejected.
++  if (this._remaining === 0) {
++    fulfill(promise, this._result);
++  }
++};
+ 
+-      Promises that are fulfilled have a fulfillment value and are in the fulfilled
+-      state.  Promises that are rejected have a rejection reason and are in the
+-      rejected state.  A fulfillment value is never a thenable.
++Enumerator.prototype._willSettleAt = function (promise, i) {
++  var enumerator = this;
+ 
+-      Promises can also be said to *resolve* a value.  If this value is also a
+-      promise, then the original promise's settled state will match the value's
+-      settled state.  So a promise that *resolves* a promise that rejects will
+-      itself reject, and a promise that *resolves* a promise that fulfills will
+-      itself fulfill.
++  subscribe(promise, undefined, function (value) {
++    return enumerator._settledAt(FULFILLED, i, value);
++  }, function (reason) {
++    return enumerator._settledAt(REJECTED, i, reason);
++  });
++};
+ 
++/**
++  `Promise.all` accepts an array of promises, and returns a new promise which
++  is fulfilled with an array of fulfillment values for the passed promises, or
++  rejected with the reason of the first passed promise to be rejected. It casts all
++  elements of the passed iterable to promises as it runs this algorithm.
+ 
+-      Basic Usage:
+-      ------------
++  Example:
+ 
+-      ```js
+-      var promise = new Promise(function(resolve, reject) {
+-        // on success
+-        resolve(value);
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = resolve(2);
++  let promise3 = resolve(3);
++  let promises = [ promise1, promise2, promise3 ];
+ 
+-        // on failure
+-        reject(reason);
+-      });
++  Promise.all(promises).then(function(array){
++    // The array here would be [ 1, 2, 3 ];
++  });
++  ```
+ 
+-      promise.then(function(value) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++  If any of the `promises` given to `all` are rejected, the first promise
++  that is rejected will be given as an argument to the returned promises's
++  rejection handler. For example:
+ 
+-      Advanced Usage:
+-      ---------------
++  Example:
+ 
+-      Promises shine when abstracting away asynchronous interactions such as
+-      `XMLHttpRequest`s.
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = reject(new Error("2"));
++  let promise3 = reject(new Error("3"));
++  let promises = [ promise1, promise2, promise3 ];
+ 
+-      ```js
+-      function getJSON(url) {
+-        return new Promise(function(resolve, reject){
+-          var xhr = new XMLHttpRequest();
++  Promise.all(promises).then(function(array){
++    // Code here never runs because there are rejected promises!
++  }, function(error) {
++    // error.message === "2"
++  });
++  ```
++
++  @method all
++  @static
++  @param {Array} entries array of promises
++  @param {String} label optional string for labeling the promise.
++  Useful for tooling.
++  @return {Promise} promise that is fulfilled when all `promises` have been
++  fulfilled, or rejected if any of them become rejected.
++  @static
++*/
++function all(entries) {
++  return new Enumerator(this, entries).promise;
++}
+ 
+-          xhr.open('GET', url);
+-          xhr.onreadystatechange = handler;
+-          xhr.responseType = 'json';
+-          xhr.setRequestHeader('Accept', 'application/json');
+-          xhr.send();
++/**
++  `Promise.race` returns a new promise which is settled in the same way as the
++  first passed promise to settle.
+ 
+-          function handler() {
+-            if (this.readyState === this.DONE) {
+-              if (this.status === 200) {
+-                resolve(this.response);
+-              } else {
+-                reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
+-              }
+-            }
+-          };
+-        });
+-      }
++  Example:
+ 
+-      getJSON('/posts.json').then(function(json) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-      Unlike callbacks, promises are great composable primitives.
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 2');
++    }, 100);
++  });
+ 
+-      ```js
+-      Promise.all([
+-        getJSON('/posts'),
+-        getJSON('/comments')
+-      ]).then(function(values){
+-        values[0] // => postsJSON
+-        values[1] // => commentsJSON
++  Promise.race([promise1, promise2]).then(function(result){
++    // result === 'promise 2' because it was resolved before promise1
++    // was resolved.
++  });
++  ```
++
++  `Promise.race` is deterministic in that only the state of the first
++  settled promise matters. For example, even if other promises given to the
++  `promises` array argument are resolved, but the first settled promise has
++  become rejected before the other promises became fulfilled, the returned
++  promise will become rejected:
++
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-        return values;
+-      });
+-      ```
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      reject(new Error('promise 2'));
++    }, 100);
++  });
+ 
+-      @class Promise
+-      @param {function} resolver
+-      Useful for tooling.
+-      @constructor
+-    */
+-    function lib$es6$promise$promise$$Promise(resolver) {
+-      this._id = lib$es6$promise$promise$$counter++;
+-      this._state = undefined;
+-      this._result = undefined;
+-      this._subscribers = [];
++  Promise.race([promise1, promise2]).then(function(result){
++    // Code here never runs
++  }, function(reason){
++    // reason.message === 'promise 2' because promise 2 became rejected before
++    // promise 1 became fulfilled
++  });
++  ```
+ 
+-      if (lib$es6$promise$$internal$$noop !== resolver) {
+-        typeof resolver !== 'function' && lib$es6$promise$promise$$needsResolver();
+-        this instanceof lib$es6$promise$promise$$Promise ? lib$es6$promise$$internal$$initializePromise(this, resolver) : lib$es6$promise$promise$$needsNew();
+-      }
+-    }
++  An example real-world use case is implementing timeouts:
+ 
+-    lib$es6$promise$promise$$Promise.all = lib$es6$promise$promise$all$$default;
+-    lib$es6$promise$promise$$Promise.race = lib$es6$promise$promise$race$$default;
+-    lib$es6$promise$promise$$Promise.resolve = lib$es6$promise$promise$resolve$$default;
+-    lib$es6$promise$promise$$Promise.reject = lib$es6$promise$promise$reject$$default;
+-    lib$es6$promise$promise$$Promise._setScheduler = lib$es6$promise$asap$$setScheduler;
+-    lib$es6$promise$promise$$Promise._setAsap = lib$es6$promise$asap$$setAsap;
+-    lib$es6$promise$promise$$Promise._asap = lib$es6$promise$asap$$asap;
++  ```javascript
++  Promise.race([ajax('foo.json'), timeout(5000)])
++  ```
+ 
+-    lib$es6$promise$promise$$Promise.prototype = {
+-      constructor: lib$es6$promise$promise$$Promise,
++  @method race
++  @static
++  @param {Array} promises array of promises to observe
++  Useful for tooling.
++  @return {Promise} a promise which settles in the same way as the first passed
++  promise to settle.
++*/
++function race(entries) {
++  /*jshint validthis:true */
++  var Constructor = this;
+ 
+-    /**
+-      The primary way of interacting with a promise is through its `then` method,
+-      which registers callbacks to receive either a promise's eventual value or the
+-      reason why the promise cannot be fulfilled.
+-
+-      ```js
+-      findUser().then(function(user){
+-        // user is available
+-      }, function(reason){
+-        // user is unavailable, and you are given the reason why
+-      });
+-      ```
+-
+-      Chaining
+-      --------
+-
+-      The return value of `then` is itself a promise.  This second, 'downstream'
+-      promise is resolved with the return value of the first promise's fulfillment
+-      or rejection handler, or rejected if the handler throws an exception.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return user.name;
+-      }, function (reason) {
+-        return 'default name';
+-      }).then(function (userName) {
+-        // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
+-        // will be `'default name'`
+-      });
++  if (!isArray(entries)) {
++    return new Constructor(function (_, reject) {
++      return reject(new TypeError('You must pass an array to race.'));
++    });
++  } else {
++    return new Constructor(function (resolve, reject) {
++      var length = entries.length;
++      for (var i = 0; i < length; i++) {
++        Constructor.resolve(entries[i]).then(resolve, reject);
++      }
++    });
++  }
++}
+ 
+-      findUser().then(function (user) {
+-        throw new Error('Found user, but still unhappy');
+-      }, function (reason) {
+-        throw new Error('`findUser` rejected and we're unhappy');
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
+-        // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
+-      });
+-      ```
+-      If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        throw new PedagogicalException('Upstream error');
+-      }).then(function (value) {
+-        // never reached
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // The `PedgagocialException` is propagated all the way down to here
+-      });
+-      ```
++/**
++  `Promise.reject` returns a promise rejected with the passed `reason`.
++  It is shorthand for the following:
+ 
+-      Assimilation
+-      ------------
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    reject(new Error('WHOOPS'));
++  });
+ 
+-      Sometimes the value you want to propagate to a downstream promise can only be
+-      retrieved asynchronously. This can be achieved by returning a promise in the
+-      fulfillment or rejection handler. The downstream promise will then be pending
+-      until the returned promise is settled. This is called *assimilation*.
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // The user's comments are now available
+-      });
+-      ```
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-      If the assimliated promise rejects, then the downstream promise will also reject.
++  ```javascript
++  let promise = Promise.reject(new Error('WHOOPS'));
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // If `findCommentsByAuthor` fulfills, we'll have the value here
+-      }, function (reason) {
+-        // If `findCommentsByAuthor` rejects, we'll have the reason here
+-      });
+-      ```
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      Simple Example
+-      --------------
++  @method reject
++  @static
++  @param {Any} reason value that the returned promise will be rejected with.
++  Useful for tooling.
++  @return {Promise} a promise rejected with the given `reason`.
++*/
++function reject(reason) {
++  /*jshint validthis:true */
++  var Constructor = this;
++  var promise = new Constructor(noop);
++  _reject(promise, reason);
++  return promise;
++}
+ 
+-      Synchronous Example
++function needsResolver() {
++  throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++}
+ 
+-      ```javascript
+-      var result;
++function needsNew() {
++  throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++}
+ 
+-      try {
+-        result = findResult();
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
++/**
++  Promise objects represent the eventual result of an asynchronous operation. The
++  primary way of interacting with a promise is through its `then` method, which
++  registers callbacks to receive either a promise's eventual value or the reason
++  why the promise cannot be fulfilled.
+ 
+-      Errback Example
++  Terminology
++  -----------
+ 
+-      ```js
+-      findResult(function(result, err){
+-        if (err) {
+-          // failure
+-        } else {
+-          // success
+-        }
+-      });
+-      ```
++  - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
++  - `thenable` is an object or function that defines a `then` method.
++  - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
++  - `exception` is a value that is thrown using the throw statement.
++  - `reason` is a value that indicates why a promise was rejected.
++  - `settled` the final resting state of a promise, fulfilled or rejected.
+ 
+-      Promise Example;
++  A promise can be in one of three states: pending, fulfilled, or rejected.
+ 
+-      ```javascript
+-      findResult().then(function(result){
+-        // success
+-      }, function(reason){
+-        // failure
+-      });
+-      ```
++  Promises that are fulfilled have a fulfillment value and are in the fulfilled
++  state.  Promises that are rejected have a rejection reason and are in the
++  rejected state.  A fulfillment value is never a thenable.
+ 
+-      Advanced Example
+-      --------------
++  Promises can also be said to *resolve* a value.  If this value is also a
++  promise, then the original promise's settled state will match the value's
++  settled state.  So a promise that *resolves* a promise that rejects will
++  itself reject, and a promise that *resolves* a promise that fulfills will
++  itself fulfill.
+ 
+-      Synchronous Example
+ 
+-      ```javascript
+-      var author, books;
++  Basic Usage:
++  ------------
+ 
+-      try {
+-        author = findAuthor();
+-        books  = findBooksByAuthor(author);
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
++  ```js
++  let promise = new Promise(function(resolve, reject) {
++    // on success
++    resolve(value);
+ 
+-      Errback Example
++    // on failure
++    reject(reason);
++  });
+ 
+-      ```js
++  promise.then(function(value) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
+ 
+-      function foundBooks(books) {
++  Advanced Usage:
++  ---------------
+ 
+-      }
++  Promises shine when abstracting away asynchronous interactions such as
++  `XMLHttpRequest`s.
+ 
+-      function failure(reason) {
++  ```js
++  function getJSON(url) {
++    return new Promise(function(resolve, reject){
++      let xhr = new XMLHttpRequest();
+ 
+-      }
++      xhr.open('GET', url);
++      xhr.onreadystatechange = handler;
++      xhr.responseType = 'json';
++      xhr.setRequestHeader('Accept', 'application/json');
++      xhr.send();
+ 
+-      findAuthor(function(author, err){
+-        if (err) {
+-          failure(err);
+-          // failure
+-        } else {
+-          try {
+-            findBoooksByAuthor(author, function(books, err) {
+-              if (err) {
+-                failure(err);
+-              } else {
+-                try {
+-                  foundBooks(books);
+-                } catch(reason) {
+-                  failure(reason);
+-                }
+-              }
+-            });
+-          } catch(error) {
+-            failure(err);
++      function handler() {
++        if (this.readyState === this.DONE) {
++          if (this.status === 200) {
++            resolve(this.response);
++          } else {
++            reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
+           }
+-          // success
+         }
+-      });
+-      ```
++      };
++    });
++  }
+ 
+-      Promise Example;
++  getJSON('/posts.json').then(function(json) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
+ 
+-      ```javascript
+-      findAuthor().
+-        then(findBooksByAuthor).
+-        then(function(books){
+-          // found books
+-      }).catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
++  Unlike callbacks, promises are great composable primitives.
+ 
+-      @method then
+-      @param {Function} onFulfilled
+-      @param {Function} onRejected
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      then: lib$es6$promise$then$$default,
++  ```js
++  Promise.all([
++    getJSON('/posts'),
++    getJSON('/comments')
++  ]).then(function(values){
++    values[0] // => postsJSON
++    values[1] // => commentsJSON
+ 
+-    /**
+-      `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
+-      as the catch block of a try/catch statement.
++    return values;
++  });
++  ```
+ 
+-      ```js
+-      function findAuthor(){
+-        throw new Error('couldn't find that author');
+-      }
++  @class Promise
++  @param {function} resolver
++  Useful for tooling.
++  @constructor
++*/
++function Promise(resolver) {
++  this[PROMISE_ID] = nextId();
++  this._result = this._state = undefined;
++  this._subscribers = [];
+ 
+-      // synchronous
+-      try {
+-        findAuthor();
+-      } catch(reason) {
+-        // something went wrong
++  if (noop !== resolver) {
++    typeof resolver !== 'function' && needsResolver();
++    this instanceof Promise ? initializePromise(this, resolver) : needsNew();
++  }
++}
++
++Promise.all = all;
++Promise.race = race;
++Promise.resolve = resolve;
++Promise.reject = reject;
++Promise._setScheduler = setScheduler;
++Promise._setAsap = setAsap;
++Promise._asap = asap;
++
++Promise.prototype = {
++  constructor: Promise,
++
++  /**
++    The primary way of interacting with a promise is through its `then` method,
++    which registers callbacks to receive either a promise's eventual value or the
++    reason why the promise cannot be fulfilled.
++  
++    ```js
++    findUser().then(function(user){
++      // user is available
++    }, function(reason){
++      // user is unavailable, and you are given the reason why
++    });
++    ```
++  
++    Chaining
++    --------
++  
++    The return value of `then` is itself a promise.  This second, 'downstream'
++    promise is resolved with the return value of the first promise's fulfillment
++    or rejection handler, or rejected if the handler throws an exception.
++  
++    ```js
++    findUser().then(function (user) {
++      return user.name;
++    }, function (reason) {
++      return 'default name';
++    }).then(function (userName) {
++      // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
++      // will be `'default name'`
++    });
++  
++    findUser().then(function (user) {
++      throw new Error('Found user, but still unhappy');
++    }, function (reason) {
++      throw new Error('`findUser` rejected and we're unhappy');
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
++      // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
++    });
++    ```
++    If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
++  
++    ```js
++    findUser().then(function (user) {
++      throw new PedagogicalException('Upstream error');
++    }).then(function (value) {
++      // never reached
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // The `PedgagocialException` is propagated all the way down to here
++    });
++    ```
++  
++    Assimilation
++    ------------
++  
++    Sometimes the value you want to propagate to a downstream promise can only be
++    retrieved asynchronously. This can be achieved by returning a promise in the
++    fulfillment or rejection handler. The downstream promise will then be pending
++    until the returned promise is settled. This is called *assimilation*.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // The user's comments are now available
++    });
++    ```
++  
++    If the assimliated promise rejects, then the downstream promise will also reject.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // If `findCommentsByAuthor` fulfills, we'll have the value here
++    }, function (reason) {
++      // If `findCommentsByAuthor` rejects, we'll have the reason here
++    });
++    ```
++  
++    Simple Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let result;
++  
++    try {
++      result = findResult();
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++    findResult(function(result, err){
++      if (err) {
++        // failure
++      } else {
++        // success
++      }
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findResult().then(function(result){
++      // success
++    }, function(reason){
++      // failure
++    });
++    ```
++  
++    Advanced Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let author, books;
++  
++    try {
++      author = findAuthor();
++      books  = findBooksByAuthor(author);
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++  
++    function foundBooks(books) {
++  
++    }
++  
++    function failure(reason) {
++  
++    }
++  
++    findAuthor(function(author, err){
++      if (err) {
++        failure(err);
++        // failure
++      } else {
++        try {
++          findBoooksByAuthor(author, function(books, err) {
++            if (err) {
++              failure(err);
++            } else {
++              try {
++                foundBooks(books);
++              } catch(reason) {
++                failure(reason);
++              }
++            }
++          });
++        } catch(error) {
++          failure(err);
++        }
++        // success
+       }
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findAuthor().
++      then(findBooksByAuthor).
++      then(function(books){
++        // found books
++    }).catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method then
++    @param {Function} onFulfilled
++    @param {Function} onRejected
++    Useful for tooling.
++    @return {Promise}
++  */
++  then: then,
++
++  /**
++    `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
++    as the catch block of a try/catch statement.
++  
++    ```js
++    function findAuthor(){
++      throw new Error('couldn't find that author');
++    }
++  
++    // synchronous
++    try {
++      findAuthor();
++    } catch(reason) {
++      // something went wrong
++    }
++  
++    // async with promises
++    findAuthor().catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method catch
++    @param {Function} onRejection
++    Useful for tooling.
++    @return {Promise}
++  */
++  'catch': function _catch(onRejection) {
++    return this.then(null, onRejection);
++  }
++};
+ 
+-      // async with promises
+-      findAuthor().catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
++function polyfill() {
++    var local = undefined;
+ 
+-      @method catch
+-      @param {Function} onRejection
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      'catch': function(onRejection) {
+-        return this.then(null, onRejection);
+-      }
+-    };
+-    var lib$es6$promise$enumerator$$default = lib$es6$promise$enumerator$$Enumerator;
+-    function lib$es6$promise$enumerator$$Enumerator(Constructor, input) {
+-      this._instanceConstructor = Constructor;
+-      this.promise = new Constructor(lib$es6$promise$$internal$$noop);
++    if (typeof global !== 'undefined') {
++        local = global;
++    } else if (typeof self !== 'undefined') {
++        local = self;
++    } else {
++        try {
++            local = Function('return this')();
++        } catch (e) {
++            throw new Error('polyfill failed because global object is unavailable in this environment');
++        }
++    }
+ 
+-      if (Array.isArray(input)) {
+-        this._input     = input;
+-        this.length     = input.length;
+-        this._remaining = input.length;
++    var P = local.Promise;
+ 
+-        this._result = new Array(this.length);
++    if (P) {
++        var promiseToString = null;
++        try {
++            promiseToString = Object.prototype.toString.call(P.resolve());
++        } catch (e) {
++            // silently ignored
++        }
+ 
+-        if (this.length === 0) {
+-          lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-        } else {
+-          this.length = this.length || 0;
+-          this._enumerate();
+-          if (this._remaining === 0) {
+-            lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-          }
++        if (promiseToString === '[object Promise]' && !P.cast) {
++            return;
+         }
+-      } else {
+-        lib$es6$promise$$internal$$reject(this.promise, this._validationError());
+-      }
+     }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._validationError = function() {
+-      return new Error('Array Methods must be provided an Array');
+-    };
++    local.Promise = Promise;
++}
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._enumerate = function() {
+-      var length  = this.length;
+-      var input   = this._input;
++polyfill();
++// Strange compat..
++Promise.polyfill = polyfill;
++Promise.Promise = Promise;
+ 
+-      for (var i = 0; this._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        this._eachEntry(input[i], i);
+-      }
+-    };
++return Promise;
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._eachEntry = function(entry, i) {
+-      var c = this._instanceConstructor;
+-      var resolve = c.resolve;
++})));
+ 
+-      if (resolve === lib$es6$promise$promise$resolve$$default) {
+-        var then = lib$es6$promise$$internal$$getThen(entry);
++}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"_process":403}],96:[function(require,module,exports){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-        if (then === lib$es6$promise$then$$default &&
+-            entry._state !== lib$es6$promise$$internal$$PENDING) {
+-          this._settledAt(entry._state, i, entry._result);
+-        } else if (typeof then !== 'function') {
+-          this._remaining--;
+-          this._result[i] = entry;
+-        } else if (c === lib$es6$promise$promise$$default) {
+-          var promise = new c(lib$es6$promise$$internal$$noop);
+-          lib$es6$promise$$internal$$handleMaybeThenable(promise, entry, then);
+-          this._willSettleAt(promise, i);
+-        } else {
+-          this._willSettleAt(new c(function(resolve) { resolve(entry); }), i);
+-        }
+-      } else {
+-        this._willSettleAt(resolve(entry), i);
+-      }
+-    };
++function EventEmitter() {
++  this._events = this._events || {};
++  this._maxListeners = this._maxListeners || undefined;
++}
++module.exports = EventEmitter;
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._settledAt = function(state, i, value) {
+-      var promise = this.promise;
++// Backwards-compat with node 0.10.x
++EventEmitter.EventEmitter = EventEmitter;
+ 
+-      if (promise._state === lib$es6$promise$$internal$$PENDING) {
+-        this._remaining--;
++EventEmitter.prototype._events = undefined;
++EventEmitter.prototype._maxListeners = undefined;
+ 
+-        if (state === lib$es6$promise$$internal$$REJECTED) {
+-          lib$es6$promise$$internal$$reject(promise, value);
+-        } else {
+-          this._result[i] = value;
+-        }
+-      }
++// By default EventEmitters will print a warning if more than 10 listeners are
++// added to it. This is a useful default which helps finding memory leaks.
++EventEmitter.defaultMaxListeners = 10;
+ 
+-      if (this._remaining === 0) {
+-        lib$es6$promise$$internal$$fulfill(promise, this._result);
+-      }
+-    };
++// Obviously not all Emitters should be limited to 10. This function allows
++// that to be increased. Set to zero for unlimited.
++EventEmitter.prototype.setMaxListeners = function(n) {
++  if (!isNumber(n) || n < 0 || isNaN(n))
++    throw TypeError('n must be a positive number');
++  this._maxListeners = n;
++  return this;
++};
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._willSettleAt = function(promise, i) {
+-      var enumerator = this;
++EventEmitter.prototype.emit = function(type) {
++  var er, handler, len, args, i, listeners;
+ 
+-      lib$es6$promise$$internal$$subscribe(promise, undefined, function(value) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$FULFILLED, i, value);
+-      }, function(reason) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$REJECTED, i, reason);
+-      });
+-    };
+-    function lib$es6$promise$polyfill$$polyfill() {
+-      var local;
++  if (!this._events)
++    this._events = {};
+ 
+-      if (typeof global !== 'undefined') {
+-          local = global;
+-      } else if (typeof self !== 'undefined') {
+-          local = self;
++  // If there is no 'error' event listener then throw.
++  if (type === 'error') {
++    if (!this._events.error ||
++        (isObject(this._events.error) && !this._events.error.length)) {
++      er = arguments[1];
++      if (er instanceof Error) {
++        throw er; // Unhandled 'error' event
+       } else {
+-          try {
+-              local = Function('return this')();
+-          } catch (e) {
+-              throw new Error('polyfill failed because global object is unavailable in this environment');
+-          }
++        // At least give some kind of context to the user
++        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
++        err.context = er;
++        throw err;
+       }
++    }
++  }
+ 
+-      var P = local.Promise;
++  handler = this._events[type];
+ 
+-      if (P && Object.prototype.toString.call(P.resolve()) === '[object Promise]' && !P.cast) {
+-        return;
+-      }
++  if (isUndefined(handler))
++    return false;
+ 
+-      local.Promise = lib$es6$promise$promise$$default;
++  if (isFunction(handler)) {
++    switch (arguments.length) {
++      // fast cases
++      case 1:
++        handler.call(this);
++        break;
++      case 2:
++        handler.call(this, arguments[1]);
++        break;
++      case 3:
++        handler.call(this, arguments[1], arguments[2]);
++        break;
++      // slower
++      default:
++        args = Array.prototype.slice.call(arguments, 1);
++        handler.apply(this, args);
+     }
+-    var lib$es6$promise$polyfill$$default = lib$es6$promise$polyfill$$polyfill;
++  } else if (isObject(handler)) {
++    args = Array.prototype.slice.call(arguments, 1);
++    listeners = handler.slice();
++    len = listeners.length;
++    for (i = 0; i < len; i++)
++      listeners[i].apply(this, args);
++  }
+ 
+-    var lib$es6$promise$umd$$ES6Promise = {
+-      'Promise': lib$es6$promise$promise$$default,
+-      'polyfill': lib$es6$promise$polyfill$$default
+-    };
++  return true;
++};
+ 
+-    /* global define:true module:true window: true */
+-    if (typeof define === 'function' && define['amd']) {
+-      define(function() { return lib$es6$promise$umd$$ES6Promise; });
+-    } else if (typeof module !== 'undefined' && module['exports']) {
+-      module['exports'] = lib$es6$promise$umd$$ES6Promise;
+-    } else if (typeof this !== 'undefined') {
+-      this['ES6Promise'] = lib$es6$promise$umd$$ES6Promise;
+-    }
++EventEmitter.prototype.addListener = function(type, listener) {
++  var m;
+ 
+-    lib$es6$promise$polyfill$$default();
+-}).call(this);
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
++  if (!this._events)
++    this._events = {};
+ 
+-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"_process":60}],123:[function(require,module,exports){
+-/**
+- * inspired by is-number <https://github.com/jonschlinkert/is-number>
+- * but significantly simplified and sped up by ignoring number and string constructors
+- * ie these return false:
+- *   new Number(1)
+- *   new String('1')
+- */
++  // To avoid recursion in the case that type === "newListener"! Before
++  // adding it to the listeners, first emit "newListener".
++  if (this._events.newListener)
++    this.emit('newListener', type,
++              isFunction(listener.listener) ?
++              listener.listener : listener);
+ 
+-'use strict';
++  if (!this._events[type])
++    // Optimize the case of one listener. Don't need the extra array object.
++    this._events[type] = listener;
++  else if (isObject(this._events[type]))
++    // If we've already got an array, just append.
++    this._events[type].push(listener);
++  else
++    // Adding the second element, need to change to array.
++    this._events[type] = [this._events[type], listener];
+ 
+-/**
+- * Is this string all whitespace?
+- * This solution kind of makes my brain hurt, but it's significantly faster
+- * than !str.trim() or any other solution I could find.
+- *
+- * whitespace codes from: http://en.wikipedia.org/wiki/Whitespace_character
+- * and verified with:
+- *
+- *  for(var i = 0; i < 65536; i++) {
+- *      var s = String.fromCharCode(i);
+- *      if(+s===0 && !s.trim()) console.log(i, s);
+- *  }
+- *
+- * which counts a couple of these as *not* whitespace, but finds nothing else
+- * that *is* whitespace. Note that charCodeAt stops at 16 bits, but it appears
+- * that there are no whitespace characters above this, and code points above
+- * this do not map onto white space characters.
+- */
+-function allBlankCharCodes(str){
+-    var l = str.length,
+-        a;
+-    for(var i = 0; i < l; i++) {
+-        a = str.charCodeAt(i);
+-        if((a < 9 || a > 13) && (a !== 32) && (a !== 133) && (a !== 160) &&
+-            (a !== 5760) && (a !== 6158) && (a < 8192 || a > 8205) &&
+-            (a !== 8232) && (a !== 8233) && (a !== 8239) && (a !== 8287) &&
+-            (a !== 8288) && (a !== 12288) && (a !== 65279)) {
+-                return false;
+-        }
++  // Check for listener leak
++  if (isObject(this._events[type]) && !this._events[type].warned) {
++    if (!isUndefined(this._maxListeners)) {
++      m = this._maxListeners;
++    } else {
++      m = EventEmitter.defaultMaxListeners;
+     }
+-    return true;
+-}
+ 
+-module.exports = function(n) {
+-    var type = typeof n;
+-    if(type === 'string') {
+-        var original = n;
+-        n = +n;
+-        // whitespace strings cast to zero - filter them out
+-        if(n===0 && allBlankCharCodes(original)) return false;
++    if (m && m > 0 && this._events[type].length > m) {
++      this._events[type].warned = true;
++      console.error('(node) warning: possible EventEmitter memory ' +
++                    'leak detected. %d listeners added. ' +
++                    'Use emitter.setMaxListeners() to increase limit.',
++                    this._events[type].length);
++      if (typeof console.trace === 'function') {
++        // not supported in IE 10
++        console.trace();
++      }
+     }
+-    else if(type !== 'number') return false;
++  }
+ 
+-    return n - n < 1;
++  return this;
+ };
+ 
+-},{}],124:[function(require,module,exports){
+-"use strict"
++EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+ 
+-var pool = require("typedarray-pool")
+-var ops = require("ndarray-ops")
+-var ndarray = require("ndarray")
++EventEmitter.prototype.once = function(type, listener) {
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-var SUPPORTED_TYPES = [
+-  "uint8",
+-  "uint8_clamped",
+-  "uint16",
+-  "uint32",
+-  "int8",
+-  "int16",
+-  "int32",
+-  "float32" ]
++  var fired = false;
+ 
+-function GLBuffer(gl, type, handle, length, usage) {
+-  this.gl = gl
+-  this.type = type
+-  this.handle = handle
+-  this.length = length
+-  this.usage = usage
+-}
++  function g() {
++    this.removeListener(type, g);
+ 
+-var proto = GLBuffer.prototype
++    if (!fired) {
++      fired = true;
++      listener.apply(this, arguments);
++    }
++  }
+ 
+-proto.bind = function() {
+-  this.gl.bindBuffer(this.type, this.handle)
+-}
++  g.listener = listener;
++  this.on(type, g);
+ 
+-proto.unbind = function() {
+-  this.gl.bindBuffer(this.type, null)
+-}
++  return this;
++};
+ 
+-proto.dispose = function() {
+-  this.gl.deleteBuffer(this.handle)
+-}
++// emits a 'removeListener' event iff the listener was removed
++EventEmitter.prototype.removeListener = function(type, listener) {
++  var list, position, length, i;
+ 
+-function updateTypeArray(gl, type, len, usage, data, offset) {
+-  var dataLen = data.length * data.BYTES_PER_ELEMENT
+-  if(offset < 0) {
+-    gl.bufferData(type, data, usage)
+-    return dataLen
+-  }
+-  if(dataLen + offset > len) {
+-    throw new Error("gl-buffer: If resizing buffer, must not specify offset")
+-  }
+-  gl.bufferSubData(type, offset, data)
+-  return len
+-}
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-function makeScratchTypeArray(array, dtype) {
+-  var res = pool.malloc(array.length, dtype)
+-  var n = array.length
+-  for(var i=0; i<n; ++i) {
+-    res[i] = array[i]
+-  }
+-  return res
+-}
++  if (!this._events || !this._events[type])
++    return this;
+ 
+-function isPacked(shape, stride) {
+-  var n = 1
+-  for(var i=stride.length-1; i>=0; --i) {
+-    if(stride[i] !== n) {
+-      return false
+-    }
+-    n *= shape[i]
+-  }
+-  return true
+-}
++  list = this._events[type];
++  length = list.length;
++  position = -1;
+ 
+-proto.update = function(array, offset) {
+-  if(typeof offset !== "number") {
+-    offset = -1
+-  }
+-  this.bind()
+-  if(typeof array === "object" && typeof array.shape !== "undefined") { //ndarray
+-    var dtype = array.dtype
+-    if(SUPPORTED_TYPES.indexOf(dtype) < 0) {
+-      dtype = "float32"
+-    }
+-    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
+-      var ext = gl.getExtension('OES_element_index_uint')
+-      if(ext && dtype !== "uint16") {
+-        dtype = "uint32"
+-      } else {
+-        dtype = "uint16"
+-      }
+-    }
+-    if(dtype === array.dtype && isPacked(array.shape, array.stride)) {
+-      if(array.offset === 0 && array.data.length === array.shape[0]) {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data, offset)
+-      } else {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data.subarray(array.offset, array.shape[0]), offset)
+-      }
+-    } else {
+-      var tmp = pool.malloc(array.size, dtype)
+-      var ndt = ndarray(tmp, array.shape)
+-      ops.assign(ndt, array)
+-      if(offset < 0) {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp, offset)
+-      } else {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp.subarray(0, array.size), offset)
++  if (list === listener ||
++      (isFunction(list.listener) && list.listener === listener)) {
++    delete this._events[type];
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
++
++  } else if (isObject(list)) {
++    for (i = length; i-- > 0;) {
++      if (list[i] === listener ||
++          (list[i].listener && list[i].listener === listener)) {
++        position = i;
++        break;
+       }
+-      pool.free(tmp)
+-    }
+-  } else if(Array.isArray(array)) { //Vanilla array
+-    var t
+-    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
+-      t = makeScratchTypeArray(array, "uint16")
+-    } else {
+-      t = makeScratchTypeArray(array, "float32")
+     }
+-    if(offset < 0) {
+-      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t, offset)
++
++    if (position < 0)
++      return this;
++
++    if (list.length === 1) {
++      list.length = 0;
++      delete this._events[type];
+     } else {
+-      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t.subarray(0, array.length), offset)
+-    }
+-    pool.free(t)
+-  } else if(typeof array === "object" && typeof array.length === "number") { //Typed array
+-    this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array, offset)
+-  } else if(typeof array === "number" || array === undefined) { //Number/default
+-    if(offset >= 0) {
+-      throw new Error("gl-buffer: Cannot specify offset when resizing buffer")
+-    }
+-    array = array | 0
+-    if(array <= 0) {
+-      array = 1
++      list.splice(position, 1);
+     }
+-    this.gl.bufferData(this.type, array|0, this.usage)
+-    this.length = array
+-  } else { //Error, case should not happen
+-    throw new Error("gl-buffer: Invalid data type")
+-  }
+-}
+ 
+-function createBuffer(gl, data, type, usage) {
+-  type = type || gl.ARRAY_BUFFER
+-  usage = usage || gl.DYNAMIC_DRAW
+-  if(type !== gl.ARRAY_BUFFER && type !== gl.ELEMENT_ARRAY_BUFFER) {
+-    throw new Error("gl-buffer: Invalid type for webgl buffer, must be either gl.ARRAY_BUFFER or gl.ELEMENT_ARRAY_BUFFER")
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
+   }
+-  if(usage !== gl.DYNAMIC_DRAW && usage !== gl.STATIC_DRAW && usage !== gl.STREAM_DRAW) {
+-    throw new Error("gl-buffer: Invalid usage for buffer, must be either gl.DYNAMIC_DRAW, gl.STATIC_DRAW or gl.STREAM_DRAW")
++
++  return this;
++};
++
++EventEmitter.prototype.removeAllListeners = function(type) {
++  var key, listeners;
++
++  if (!this._events)
++    return this;
++
++  // not listening for removeListener, no need to emit
++  if (!this._events.removeListener) {
++    if (arguments.length === 0)
++      this._events = {};
++    else if (this._events[type])
++      delete this._events[type];
++    return this;
+   }
+-  var handle = gl.createBuffer()
+-  var result = new GLBuffer(gl, type, handle, 0, usage)
+-  result.update(data)
+-  return result
+-}
+ 
+-module.exports = createBuffer
++  // emit removeListener for all listeners on all events
++  if (arguments.length === 0) {
++    for (key in this._events) {
++      if (key === 'removeListener') continue;
++      this.removeAllListeners(key);
++    }
++    this.removeAllListeners('removeListener');
++    this._events = {};
++    return this;
++  }
+ 
+-},{"ndarray":433,"ndarray-ops":432,"typedarray-pool":458}],125:[function(require,module,exports){
+-'use strict'
++  listeners = this._events[type];
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var pool = require('typedarray-pool')
+-var shaders = require('./lib/shaders')
++  if (isFunction(listeners)) {
++    this.removeListener(type, listeners);
++  } else if (listeners) {
++    // LIFO order
++    while (listeners.length)
++      this.removeListener(type, listeners[listeners.length - 1]);
++  }
++  delete this._events[type];
+ 
+-module.exports = createError2D
++  return this;
++};
+ 
+-var WEIGHTS = [
+-  // x-error bar
+-  [1, 0, 0, 1, 0, 0],
+-  [1, 0, 0, -1, 0, 0],
+-  [-1, 0, 0, -1, 0, 0],
++EventEmitter.prototype.listeners = function(type) {
++  var ret;
++  if (!this._events || !this._events[type])
++    ret = [];
++  else if (isFunction(this._events[type]))
++    ret = [this._events[type]];
++  else
++    ret = this._events[type].slice();
++  return ret;
++};
+ 
+-  [-1, 0, 0, -1, 0, 0],
+-  [-1, 0, 0, 1, 0, 0],
+-  [1, 0, 0, 1, 0, 0],
++EventEmitter.prototype.listenerCount = function(type) {
++  if (this._events) {
++    var evlistener = this._events[type];
+ 
+-  // x-error right cap
+-  [1, 0, -1, 0, 0, 1],
+-  [1, 0, -1, 0, 0, -1],
+-  [1, 0, 1, 0, 0, -1],
++    if (isFunction(evlistener))
++      return 1;
++    else if (evlistener)
++      return evlistener.length;
++  }
++  return 0;
++};
+ 
+-  [1, 0, 1, 0, 0, -1],
+-  [1, 0, 1, 0, 0, 1],
+-  [1, 0, -1, 0, 0, 1],
++EventEmitter.listenerCount = function(emitter, type) {
++  return emitter.listenerCount(type);
++};
+ 
+-  // x-error left cap
+-  [-1, 0, -1, 0, 0, 1],
+-  [-1, 0, -1, 0, 0, -1],
+-  [-1, 0, 1, 0, 0, -1],
++function isFunction(arg) {
++  return typeof arg === 'function';
++}
+ 
+-  [-1, 0, 1, 0, 0, -1],
+-  [-1, 0, 1, 0, 0, 1],
+-  [-1, 0, -1, 0, 0, 1],
++function isNumber(arg) {
++  return typeof arg === 'number';
++}
+ 
+-  // y-error bar
+-  [0, 1, 1, 0, 0, 0],
+-  [0, 1, -1, 0, 0, 0],
+-  [0, -1, -1, 0, 0, 0],
++function isObject(arg) {
++  return typeof arg === 'object' && arg !== null;
++}
+ 
+-  [0, -1, -1, 0, 0, 0],
+-  [0, 1, 1, 0, 0, 0],
+-  [0, -1, 1, 0, 0, 0],
++function isUndefined(arg) {
++  return arg === void 0;
++}
+ 
+-  // y-error top cap
+-  [0, 1, 0, -1, 1, 0],
+-  [0, 1, 0, -1, -1, 0],
+-  [0, 1, 0, 1, -1, 0],
++},{}],97:[function(require,module,exports){
++"use strict"
+ 
+-  [0, 1, 0, 1, 1, 0],
+-  [0, 1, 0, -1, 1, 0],
+-  [0, 1, 0, 1, -1, 0],
++module.exports = extractPlanes
+ 
+-  // y-error bottom cap
+-  [0, -1, 0, -1, 1, 0],
+-  [0, -1, 0, -1, -1, 0],
+-  [0, -1, 0, 1, -1, 0],
++function extractPlanes(M, zNear, zFar) {
++  var z  = zNear || 0.0
++  var zf = zFar || 1.0
++  return [
++    [ M[12] + M[0], M[13] + M[1], M[14] + M[2], M[15] + M[3] ],
++    [ M[12] - M[0], M[13] - M[1], M[14] - M[2], M[15] - M[3] ],
++    [ M[12] + M[4], M[13] + M[5], M[14] + M[6], M[15] + M[7] ],
++    [ M[12] - M[4], M[13] - M[5], M[14] - M[6], M[15] - M[7] ],
++    [ z*M[12] + M[8], z*M[13] + M[9], z*M[14] + M[10], z*M[15] + M[11] ],
++    [ zf*M[12] - M[8], zf*M[13] - M[9], zf*M[14] - M[10], zf*M[15] - M[11] ]
++  ]
++}
++},{}],98:[function(require,module,exports){
++/**
++ * inspired by is-number <https://github.com/jonschlinkert/is-number>
++ * but significantly simplified and sped up by ignoring number and string constructors
++ * ie these return false:
++ *   new Number(1)
++ *   new String('1')
++ */
+ 
+-  [0, -1, 0, 1, 1, 0],
+-  [0, -1, 0, -1, 1, 0],
+-  [0, -1, 0, 1, -1, 0]
+-]
++'use strict';
+ 
+-function GLError2D (plot, shader, buffer) {
+-  this.plot = plot
++/**
++ * Is this string all whitespace?
++ * This solution kind of makes my brain hurt, but it's significantly faster
++ * than !str.trim() or any other solution I could find.
++ *
++ * whitespace codes from: http://en.wikipedia.org/wiki/Whitespace_character
++ * and verified with:
++ *
++ *  for(var i = 0; i < 65536; i++) {
++ *      var s = String.fromCharCode(i);
++ *      if(+s===0 && !s.trim()) console.log(i, s);
++ *  }
++ *
++ * which counts a couple of these as *not* whitespace, but finds nothing else
++ * that *is* whitespace. Note that charCodeAt stops at 16 bits, but it appears
++ * that there are no whitespace characters above this, and code points above
++ * this do not map onto white space characters.
++ */
++function allBlankCharCodes(str){
++    var l = str.length,
++        a;
++    for(var i = 0; i < l; i++) {
++        a = str.charCodeAt(i);
++        if((a < 9 || a > 13) && (a !== 32) && (a !== 133) && (a !== 160) &&
++            (a !== 5760) && (a !== 6158) && (a < 8192 || a > 8205) &&
++            (a !== 8232) && (a !== 8233) && (a !== 8239) && (a !== 8287) &&
++            (a !== 8288) && (a !== 12288) && (a !== 65279)) {
++                return false;
++        }
++    }
++    return true;
++}
+ 
+-  this.shader = shader
+-  this.buffer = buffer
++module.exports = function(n) {
++    var type = typeof n;
++    if(type === 'string') {
++        var original = n;
++        n = +n;
++        // whitespace strings cast to zero - filter them out
++        if(n===0 && allBlankCharCodes(original)) return false;
++    }
++    else if(type !== 'number') return false;
+ 
+-  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
++    return n - n < 1;
++};
+ 
+-  this.numPoints = 0
++},{}],99:[function(require,module,exports){
++'use strict';
+ 
+-  this.color = [0, 0, 0, 1]
+-}
++module.exports = createFilter;
+ 
+-var proto = GLError2D.prototype
++var types = ['Unknown', 'Point', 'LineString', 'Polygon'];
+ 
+-proto.draw = (function () {
+-  var MATRIX = [
+-    1, 0, 0,
+-    0, 1, 0,
+-    0, 0, 1
+-  ]
++/**
++ * Given a filter expressed as nested arrays, return a new function
++ * that evaluates whether a given feature (with a .properties or .tags property)
++ * passes its test.
++ *
++ * @param {Array} filter mapbox gl filter
++ * @returns {Function} filter-evaluating function
++ */
++function createFilter(filter) {
++    return new Function('f', 'var p = (f && f.properties || {}); return ' + compile(filter));
++}
+ 
+-  var PIXEL_SCALE = [1, 1]
++function compile(filter) {
++    if (!filter) return 'true';
++    var op = filter[0];
++    if (filter.length <= 1) return op === 'any' ? 'false' : 'true';
++    var str =
++        op === '==' ? compileComparisonOp(filter[1], filter[2], '===', false) :
++        op === '!=' ? compileComparisonOp(filter[1], filter[2], '!==', false) :
++        op === '<' ||
++        op === '>' ||
++        op === '<=' ||
++        op === '>=' ? compileComparisonOp(filter[1], filter[2], op, true) :
++        op === 'any' ? compileLogicalOp(filter.slice(1), '||') :
++        op === 'all' ? compileLogicalOp(filter.slice(1), '&&') :
++        op === 'none' ? compileNegation(compileLogicalOp(filter.slice(1), '||')) :
++        op === 'in' ? compileInOp(filter[1], filter.slice(2)) :
++        op === '!in' ? compileNegation(compileInOp(filter[1], filter.slice(2))) :
++        op === 'has' ? compileHasOp(filter[1]) :
++        op === '!has' ? compileNegation(compileHasOp([filter[1]])) :
++        'true';
++    return '(' + str + ')';
++}
+ 
+-  return function () {
+-    var plot = this.plot
+-    var shader = this.shader
+-    var buffer = this.buffer
+-    var bounds = this.bounds
+-    var numPoints = this.numPoints
++function compilePropertyReference(property) {
++    return property === '$type' ? 'f.type' :
++        property === '$id' ? 'f.id' :
++        'p[' + JSON.stringify(property) + ']';
++}
+ 
+-    if (!numPoints) {
+-      return
+-    }
++function compileComparisonOp(property, value, op, checkType) {
++    var left = compilePropertyReference(property);
++    var right = property === '$type' ? types.indexOf(value) : JSON.stringify(value);
++    return (checkType ? 'typeof ' + left + '=== typeof ' + right + '&&' : '') + left + op + right;
++}
+ 
+-    var gl = plot.gl
+-    var dataBox = plot.dataBox
+-    var viewBox = plot.viewBox
+-    var pixelRatio = plot.pixelRatio
++function compileLogicalOp(expressions, op) {
++    return expressions.map(compile).join(op);
++}
+ 
+-    var boundX = bounds[2] - bounds[0]
+-    var boundY = bounds[3] - bounds[1]
+-    var dataX = dataBox[2] - dataBox[0]
+-    var dataY = dataBox[3] - dataBox[1]
++function compileInOp(property, values) {
++    if (property === '$type') values = values.map(function(value) { return types.indexOf(value); });
++    var left = JSON.stringify(values.sort(compare));
++    var right = compilePropertyReference(property);
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++    if (values.length <= 200) return left + '.indexOf(' + right + ') !== -1';
+ 
+-    var screenX = viewBox[2] - viewBox[0]
+-    var screenY = viewBox[3] - viewBox[1]
++    return 'function(v, a, i, j) {' +
++        'while (i <= j) { var m = (i + j) >> 1;' +
++        '    if (a[m] === v) return true; if (a[m] > v) j = m - 1; else i = m + 1;' +
++        '}' +
++    'return false; }(' + right + ', ' + left + ',0,' + (values.length - 1) + ')';
++}
+ 
+-    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
+-    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
++function compileHasOp(property) {
++    return JSON.stringify(property) + ' in p';
++}
+ 
+-    buffer.bind()
+-    shader.bind()
++function compileNegation(expression) {
++    return '!(' + expression + ')';
++}
+ 
+-    shader.uniforms.viewTransform = MATRIX
+-    shader.uniforms.pixelScale = PIXEL_SCALE
+-    shader.uniforms.color = this.color
++// Comparison function to sort numbers and strings
++function compare(a, b) {
++    return a < b ? -1 : a > b ? 1 : 0;
++}
+ 
+-    shader.attributes.position.pointer(
+-      gl.FLOAT,
+-      false,
+-      16,
+-      0)
++},{}],100:[function(require,module,exports){
++'use strict'
+ 
+-    shader.attributes.pixelOffset.pointer(
+-      gl.FLOAT,
+-      false,
+-      16,
+-      8)
++module.exports = createFilteredVector
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, numPoints * WEIGHTS.length)
+-  }
+-})()
++var cubicHermite = require('cubic-hermite')
++var bsearch = require('binary-search-bounds')
+ 
+-proto.drawPick = function (offset) { return offset }
+-proto.pick = function (x, y) {
+-  return null
++function clamp(lo, hi, x) {
++  return Math.min(hi, Math.max(lo, x))
+ }
+ 
+-proto.update = function (options) {
+-  options = options || {}
++function FilteredVector(state0, velocity0, t0) {
++  this.dimension  = state0.length
++  this.bounds     = [ new Array(this.dimension), new Array(this.dimension) ]
++  for(var i=0; i<this.dimension; ++i) {
++    this.bounds[0][i] = -Infinity
++    this.bounds[1][i] = Infinity
++  }
++  this._state     = state0.slice().reverse()
++  this._velocity  = velocity0.slice().reverse()
++  this._time      = [ t0 ]
++  this._scratch   = [ state0.slice(), state0.slice(), state0.slice(), state0.slice(), state0.slice() ]
++}
+ 
+-  var i, x, y
++var proto = FilteredVector.prototype
+ 
+-  var positions = options.positions || []
+-  var errors = options.errors || []
++proto.flush = function(t) {
++  var idx = bsearch.gt(this._time, t) - 1
++  if(idx <= 0) {
++    return
++  }
++  this._time.splice(0, idx)
++  this._state.splice(0, idx * this.dimension)
++  this._velocity.splice(0, idx * this.dimension)
++}
+ 
+-  var lineWidth = 1
+-  if ('lineWidth' in options) {
+-    lineWidth = +options.lineWidth
++proto.curve = function(t) {
++  var time      = this._time
++  var n         = time.length
++  var idx       = bsearch.le(time, t)
++  var result    = this._scratch[0]
++  var state     = this._state
++  var velocity  = this._velocity
++  var d         = this.dimension
++  var bounds    = this.bounds
++  if(idx < 0) {
++    var ptr = d-1
++    for(var i=0; i<d; ++i, --ptr) {
++      result[i] = state[ptr]
++    }
++  } else if(idx >= n-1) {
++    var ptr = state.length-1
++    var tf = t - time[n-1]
++    for(var i=0; i<d; ++i, --ptr) {
++      result[i] = state[ptr] + tf * velocity[ptr]
++    }
++  } else {
++    var ptr = d * (idx+1) - 1
++    var t0  = time[idx]
++    var t1  = time[idx+1]
++    var dt  = (t1 - t0) || 1.0
++    var x0  = this._scratch[1]
++    var x1  = this._scratch[2]
++    var v0  = this._scratch[3]
++    var v1  = this._scratch[4]
++    var steady = true
++    for(var i=0; i<d; ++i, --ptr) {
++      x0[i] = state[ptr]
++      v0[i] = velocity[ptr] * dt
++      x1[i] = state[ptr+d]
++      v1[i] = velocity[ptr+d] * dt
++      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
++    }
++    if(steady) {
++      for(var i=0; i<d; ++i) {
++        result[i] = x0[i]
++      }
++    } else {
++      cubicHermite(x0, v0, x1, v1, (t-t0)/dt, result)
++    }
++  }
++  var lo = bounds[0]
++  var hi = bounds[1]
++  for(var i=0; i<d; ++i) {
++    result[i] = clamp(lo[i], hi[i], result[i])
+   }
++  return result
++}
+ 
+-  var capSize = 5
+-  if ('capSize' in options) {
+-    capSize = +options.capSize
++proto.dcurve = function(t) {
++  var time     = this._time
++  var n        = time.length
++  var idx      = bsearch.le(time, t)
++  var result   = this._scratch[0]
++  var state    = this._state
++  var velocity = this._velocity
++  var d        = this.dimension
++  if(idx >= n-1) {
++    var ptr = state.length-1
++    var tf = t - time[n-1]
++    for(var i=0; i<d; ++i, --ptr) {
++      result[i] = velocity[ptr]
++    }
++  } else {
++    var ptr = d * (idx+1) - 1
++    var t0 = time[idx]
++    var t1 = time[idx+1]
++    var dt = (t1 - t0) || 1.0
++    var x0 = this._scratch[1]
++    var x1 = this._scratch[2]
++    var v0 = this._scratch[3]
++    var v1 = this._scratch[4]
++    var steady = true
++    for(var i=0; i<d; ++i, --ptr) {
++      x0[i] = state[ptr]
++      v0[i] = velocity[ptr] * dt
++      x1[i] = state[ptr+d]
++      v1[i] = velocity[ptr+d] * dt
++      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
++    }
++    if(steady) {
++      for(var i=0; i<d; ++i) {
++        result[i] = 0.0
++      }
++    } else {
++      cubicHermite.derivative(x0, v0, x1, v1, (t-t0)/dt, result)
++      for(var i=0; i<d; ++i) {
++        result[i] /= dt
++      }
++    }
+   }
++  return result
++}
+ 
+-  this.color = (options.color || [0, 0, 0, 1]).slice()
++proto.lastT = function() {
++  var time = this._time
++  return time[time.length-1]
++}
+ 
+-  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
++proto.stable = function() {
++  var velocity = this._velocity
++  var ptr = velocity.length
++  for(var i=this.dimension-1; i>=0; --i) {
++    if(velocity[--ptr]) {
++      return false
++    }
++  }
++  return true
++}
+ 
+-  var numPoints = this.numPoints = positions.length >> 1
+-  for (i = 0; i < numPoints; ++i) {
+-    x = positions[i * 2]
+-    y = positions[i * 2 + 1]
++proto.jump = function(t) {
++  var t0 = this.lastT()
++  var d  = this.dimension
++  if(t < t0 || arguments.length !== d+1) {
++    return
++  }
++  var state     = this._state
++  var velocity  = this._velocity
++  var ptr       = state.length-this.dimension
++  var bounds    = this.bounds
++  var lo        = bounds[0]
++  var hi        = bounds[1]
++  this._time.push(t0, t)
++  for(var j=0; j<2; ++j) {
++    for(var i=0; i<d; ++i) {
++      state.push(state[ptr++])
++      velocity.push(0)
++    }
++  }
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
++    velocity.push(0)
++  }
++}
+ 
+-    bounds[0] = Math.min(x, bounds[0])
+-    bounds[1] = Math.min(y, bounds[1])
+-    bounds[2] = Math.max(x, bounds[2])
+-    bounds[3] = Math.max(y, bounds[3])
++proto.push = function(t) {
++  var t0 = this.lastT()
++  var d  = this.dimension
++  if(t < t0 || arguments.length !== d+1) {
++    return
+   }
+-  if (bounds[2] === bounds[0]) {
+-    bounds[2] += 1
++  var state     = this._state
++  var velocity  = this._velocity
++  var ptr       = state.length-this.dimension
++  var dt        = t - t0
++  var bounds    = this.bounds
++  var lo        = bounds[0]
++  var hi        = bounds[1]
++  var sf        = (dt > 1e-6) ? 1/dt : 0
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    var xc = clamp(lo[i-1], hi[i-1], arguments[i])
++    state.push(xc)
++    velocity.push((xc - state[ptr++]) * sf)
+   }
+-  if (bounds[3] === bounds[1]) {
+-    bounds[3] += 1
++}
++
++proto.set = function(t) {
++  var d = this.dimension
++  if(t < this.lastT() || arguments.length !== d+1) {
++    return
+   }
+-  var sx = 1.0 / (bounds[2] - bounds[0])
+-  var sy = 1.0 / (bounds[3] - bounds[1])
+-  var tx = bounds[0]
+-  var ty = bounds[1]
++  var state     = this._state
++  var velocity  = this._velocity
++  var bounds    = this.bounds
++  var lo        = bounds[0]
++  var hi        = bounds[1]
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
++    velocity.push(0)
++  }
++}
+ 
+-  var bufferData = pool.mallocFloat32(numPoints * WEIGHTS.length * 4)
+-  var ptr = 0
+-  for (i = 0; i < numPoints; ++i) {
+-    x = positions[2 * i]
+-    y = positions[2 * i + 1]
+-    var ex0 = errors[4 * i]
+-    var ex1 = errors[4 * i + 1]
+-    var ey0 = errors[4 * i + 2]
+-    var ey1 = errors[4 * i + 3]
++proto.move = function(t) {
++  var t0 = this.lastT()
++  var d  = this.dimension
++  if(t <= t0 || arguments.length !== d+1) {
++    return
++  }
++  var state    = this._state
++  var velocity = this._velocity
++  var statePtr = state.length - this.dimension
++  var bounds   = this.bounds
++  var lo       = bounds[0]
++  var hi       = bounds[1]
++  var dt       = t - t0
++  var sf       = (dt > 1e-6) ? 1/dt : 0.0
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    var dx = arguments[i]
++    state.push(clamp(lo[i-1], hi[i-1], state[statePtr++] + dx))
++    velocity.push(dx * sf)
++  }
++}
+ 
+-    for (var j = 0; j < WEIGHTS.length; ++j) {
+-      var w = WEIGHTS[j]
++proto.idle = function(t) {
++  var t0 = this.lastT()
++  if(t < t0) {
++    return
++  }
++  var d        = this.dimension
++  var state    = this._state
++  var velocity = this._velocity
++  var statePtr = state.length-d
++  var bounds   = this.bounds
++  var lo       = bounds[0]
++  var hi       = bounds[1]
++  var dt       = t - t0
++  this._time.push(t)
++  for(var i=d-1; i>=0; --i) {
++    state.push(clamp(lo[i], hi[i], state[statePtr] + dt * velocity[statePtr]))
++    velocity.push(0)
++    statePtr += 1
++  }
++}
+ 
+-      var dx = w[0]
+-      var dy = w[1]
++function getZero(d) {
++  var result = new Array(d)
++  for(var i=0; i<d; ++i) {
++    result[i] = 0.0
++  }
++  return result
++}
+ 
+-      if (dx < 0) {
+-        dx *= ex0
+-      } else if (dx > 0) {
+-        dx *= ex1
++function createFilteredVector(initState, initVelocity, initTime) {
++  switch(arguments.length) {
++    case 0:
++      return new FilteredVector([0], [0], 0)
++    case 1:
++      if(typeof initState === 'number') {
++        var zero = getZero(initState)
++        return new FilteredVector(zero, zero, 0)
++      } else {
++        return new FilteredVector(initState, getZero(initState.length), 0)
+       }
+-
+-      if (dy < 0) {
+-        dy *= ey0
+-      } else if (dy > 0) {
+-        dy *= ey1
++    case 2:
++      if(typeof initVelocity === 'number') {
++        var zero = getZero(initState.length)
++        return new FilteredVector(initState, zero, +initVelocity)
++      } else {
++        initTime = 0
+       }
+-
+-      bufferData[ptr++] = sx * ((x - tx) + dx)
+-      bufferData[ptr++] = sy * ((y - ty) + dy)
+-      bufferData[ptr++] = lineWidth * w[2] + (capSize + lineWidth) * w[4]
+-      bufferData[ptr++] = lineWidth * w[3] + (capSize + lineWidth) * w[5]
+-    }
++    case 3:
++      if(initState.length !== initVelocity.length) {
++        throw new Error('state and velocity lengths must match')
++      }
++      return new FilteredVector(initState, initVelocity, initTime)
+   }
+-  this.buffer.update(bufferData)
+-  pool.free(bufferData)
+-}
+-
+-proto.dispose = function () {
+-  this.plot.removeObject(this)
+-  this.shader.dispose()
+-  this.buffer.dispose()
+ }
+ 
+-function createError2D (plot, options) {
+-  var shader = createShader(plot.gl, shaders.vertex, shaders.fragment)
+-  var buffer = createBuffer(plot.gl)
+-
+-  var errorbars = new GLError2D(plot, shader, buffer)
++},{"binary-search-bounds":48,"cubic-hermite":85}],101:[function(require,module,exports){
++"use strict"
+ 
+-  errorbars.update(options)
++module.exports = createRBTree
+ 
+-  plot.addObject(errorbars)
++var RED   = 0
++var BLACK = 1
+ 
+-  return errorbars
++function RBNode(color, key, value, left, right, count) {
++  this._color = color
++  this.key = key
++  this.value = value
++  this.left = left
++  this.right = right
++  this._count = count
+ }
+ 
+-},{"./lib/shaders":126,"gl-buffer":124,"gl-shader":203,"typedarray-pool":458}],126:[function(require,module,exports){
+-
+-
+-module.exports = {
+-  vertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 pixelOffset;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvoid main() {\n  vec3 scrPosition = viewTransform * vec3(position, 1);\n  gl_Position = vec4(\n    scrPosition.xy + scrPosition.z * pixelScale * pixelOffset,\n    0,\n    scrPosition.z);\n}\n",
+-  fragment: "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
++function cloneNode(node) {
++  return new RBNode(node._color, node.key, node.value, node.left, node.right, node._count)
+ }
+ 
+-},{}],127:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = createErrorBars
+-
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var createShader  = require('./shaders/index')
+-
+-var IDENTITY = [1,0,0,0,
+-                0,1,0,0,
+-                0,0,1,0,
+-                0,0,0,1]
+-
+-function ErrorBars(gl, buffer, vao, shader) {
+-  this.gl           = gl
+-  this.shader       = shader
+-  this.buffer       = buffer
+-  this.vao          = vao
+-  this.pixelRatio   = 1
+-  this.bounds       = [[ Infinity, Infinity, Infinity], [-Infinity,-Infinity,-Infinity]]
+-  this.clipBounds   = [[-Infinity,-Infinity,-Infinity], [ Infinity, Infinity, Infinity]]
+-  this.lineWidth    = [1,1,1]
+-  this.capSize      = [10,10,10]
+-  this.lineCount    = [0,0,0]
+-  this.lineOffset   = [0,0,0]
+-  this.opacity      = 1
++function repaint(color, node) {
++  return new RBNode(color, node.key, node.value, node.left, node.right, node._count)
+ }
+ 
+-var proto = ErrorBars.prototype
+-
+-proto.isOpaque = function() {
+-  return this.opacity >= 1
++function recount(node) {
++  node._count = 1 + (node.left ? node.left._count : 0) + (node.right ? node.right._count : 0)
+ }
+ 
+-proto.isTransparent = function() {
+-  return this.opacity < 1
++function RedBlackTree(compare, root) {
++  this._compare = compare
++  this.root = root
+ }
+ 
+-proto.drawTransparent = proto.draw = function(cameraParams) {
+-  var gl = this.gl
+-  var uniforms        = this.shader.uniforms
+-
+-  this.shader.bind()
+-  var view       = uniforms.view       = cameraParams.view       || IDENTITY
+-  var projection = uniforms.projection = cameraParams.projection || IDENTITY
+-  uniforms.model      = cameraParams.model      || IDENTITY
+-  uniforms.clipBounds = this.clipBounds
+-  uniforms.opacity    = this.opacity
+-
+-
+-  var cx = view[12]
+-  var cy = view[13]
+-  var cz = view[14]
+-  var cw = view[15]
+-  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
+-
++var proto = RedBlackTree.prototype
+ 
+-  this.vao.bind()
+-  for(var i=0; i<3; ++i) {
+-    gl.lineWidth(this.lineWidth[i])
+-    uniforms.capSize = this.capSize[i] * pixelScaleF
+-    gl.drawArrays(gl.LINES, this.lineOffset[i], this.lineCount[i])
++Object.defineProperty(proto, "keys", {
++  get: function() {
++    var result = []
++    this.forEach(function(k,v) {
++      result.push(k)
++    })
++    return result
+   }
+-  this.vao.unbind()
+-}
++})
+ 
+-function updateBounds(bounds, point) {
+-  for(var i=0; i<3; ++i) {
+-    bounds[0][i] = Math.min(bounds[0][i], point[i])
+-    bounds[1][i] = Math.max(bounds[1][i], point[i])
++Object.defineProperty(proto, "values", {
++  get: function() {
++    var result = []
++    this.forEach(function(k,v) {
++      result.push(v)
++    })
++    return result
+   }
+-}
++})
+ 
+-var FACE_TABLE = (function(){
+-  var table = new Array(3)
+-  for(var d=0; d<3; ++d) {
+-    var row = []
+-    for(var j=1; j<=2; ++j) {
+-      for(var s=-1; s<=1; s+=2) {
+-        var u = (j+d) % 3
+-        var y = [0,0,0]
+-        y[u] = s
+-        row.push(y)
+-      }
++//Returns the number of nodes in the tree
++Object.defineProperty(proto, "length", {
++  get: function() {
++    if(this.root) {
++      return this.root._count
+     }
+-    table[d] = row
+-  }
+-  return table
+-})()
+-
+-
+-function emitFace(verts, x, c, d) {
+-  var offsets = FACE_TABLE[d]
+-  for(var i=0; i<offsets.length; ++i) {
+-    var o = offsets[i]
+-    verts.push(x[0], x[1], x[2],
+-               c[0], c[1], c[2], c[3],
+-               o[0], o[1], o[2])
++    return 0
+   }
+-  return offsets.length
+-}
+-
+-proto.update = function(options) {
+-  options = options || {}
++})
+ 
+-  if('lineWidth' in options) {
+-    this.lineWidth = options.lineWidth
+-    if(!Array.isArray(this.lineWidth)) {
+-      this.lineWidth = [this.lineWidth, this.lineWidth, this.lineWidth]
++//Insert a new item into the tree
++proto.insert = function(key, value) {
++  var cmp = this._compare
++  //Find point to insert new node at
++  var n = this.root
++  var n_stack = []
++  var d_stack = []
++  while(n) {
++    var d = cmp(key, n.key)
++    n_stack.push(n)
++    d_stack.push(d)
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
+   }
+-  if('capSize' in options) {
+-    this.capSize = options.capSize
+-    if(!Array.isArray(this.capSize)) {
+-      this.capSize = [this.capSize, this.capSize, this.capSize]
++  //Rebuild path to leaf node
++  n_stack.push(new RBNode(RED, key, value, null, null, 1))
++  for(var s=n_stack.length-2; s>=0; --s) {
++    var n = n_stack[s]
++    if(d_stack[s] <= 0) {
++      n_stack[s] = new RBNode(n._color, n.key, n.value, n_stack[s+1], n.right, n._count+1)
++    } else {
++      n_stack[s] = new RBNode(n._color, n.key, n.value, n.left, n_stack[s+1], n._count+1)
+     }
+   }
+-  if('opacity' in options) {
+-    this.opacity = options.opacity
+-  }
+-
+-  var color    = options.color || [[0,0,0],[0,0,0],[0,0,0]]
+-  var position = options.position
+-  var error    = options.error
+-  if(!Array.isArray(color[0])) {
+-    color = [color,color,color]
+-  }
+-
+-  if(position && error) {
+-
+-    var verts       = []
+-    var n           = position.length
+-    var vertexCount = 0
+-    this.bounds     = [[ Infinity, Infinity, Infinity],
+-                       [-Infinity,-Infinity,-Infinity]]
+-    this.lineCount  = [0,0,0]
+-
+-    //Build geometry for lines
+-    for(var j=0; j<3; ++j) {
+-      this.lineOffset[j] = vertexCount
+-
+-i_loop:
+-      for(var i=0; i<n; ++i) {
+-        var p = position[i]
+-
+-        for(var k=0; k<3; ++k) {
+-          if(isNaN(p[k]) || !isFinite(p[k])) {
+-            continue i_loop
++  //Rebalance tree using rotations
++  //console.log("start insert", key, d_stack)
++  for(var s=n_stack.length-1; s>1; --s) {
++    var p = n_stack[s-1]
++    var n = n_stack[s]
++    if(p._color === BLACK || n._color === BLACK) {
++      break
++    }
++    var pp = n_stack[s-2]
++    if(pp.left === p) {
++      if(p.left === n) {
++        var y = pp.right
++        if(y && y._color === RED) {
++          //console.log("LLr")
++          p._color = BLACK
++          pp.right = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("LLb")
++          pp._color = RED
++          pp.left = p.right
++          p._color = BLACK
++          p.right = pp
++          n_stack[s-2] = p
++          n_stack[s-1] = n
++          recount(pp)
++          recount(p)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.left === pp) {
++              ppp.left = p
++            } else {
++              ppp.right = p
++            }
+           }
++          break
+         }
+-
+-        var e = error[i]
+-        var c = color[j]
+-        if(Array.isArray(c[0])) {
+-          c = color[i]
+-        }
+-        if(c.length === 3) {
+-          c = [c[0], c[1], c[2], 1]
+-        }
+-        if(isNaN(e[0][j]) || isNaN(e[1][j])) {
+-          continue
++      } else {
++        var y = pp.right
++        if(y && y._color === RED) {
++          //console.log("LRr")
++          p._color = BLACK
++          pp.right = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("LRb")
++          p.right = n.left
++          pp._color = RED
++          pp.left = n.right
++          n._color = BLACK
++          n.left = p
++          n.right = pp
++          n_stack[s-2] = n
++          n_stack[s-1] = p
++          recount(pp)
++          recount(p)
++          recount(n)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.left === pp) {
++              ppp.left = n
++            } else {
++              ppp.right = n
++            }
++          }
++          break
+         }
+-        if(e[0][j] < 0) {
+-          var x = p.slice()
+-          x[j] += e[0][j]
+-          verts.push(p[0], p[1], p[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0,
+-                     x[0], x[1], x[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0)
+-          updateBounds(this.bounds, x)
+-          vertexCount += 2 + emitFace(verts, x, c, j)
++      }
++    } else {
++      if(p.right === n) {
++        var y = pp.left
++        if(y && y._color === RED) {
++          //console.log("RRr", y.key)
++          p._color = BLACK
++          pp.left = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("RRb")
++          pp._color = RED
++          pp.right = p.left
++          p._color = BLACK
++          p.left = pp
++          n_stack[s-2] = p
++          n_stack[s-1] = n
++          recount(pp)
++          recount(p)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.right === pp) {
++              ppp.right = p
++            } else {
++              ppp.left = p
++            }
++          }
++          break
+         }
+-        if(e[1][j] > 0) {
+-          var x = p.slice()
+-          x[j] += e[1][j]
+-          verts.push(p[0], p[1], p[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0,
+-                     x[0], x[1], x[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0)
+-          updateBounds(this.bounds, x)
+-          vertexCount += 2 + emitFace(verts, x, c, j)
++      } else {
++        var y = pp.left
++        if(y && y._color === RED) {
++          //console.log("RLr")
++          p._color = BLACK
++          pp.left = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("RLb")
++          p.left = n.right
++          pp._color = RED
++          pp.right = n.left
++          n._color = BLACK
++          n.right = p
++          n.left = pp
++          n_stack[s-2] = n
++          n_stack[s-1] = p
++          recount(pp)
++          recount(p)
++          recount(n)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.right === pp) {
++              ppp.right = n
++            } else {
++              ppp.left = n
++            }
++          }
++          break
+         }
+       }
+-      this.lineCount[j] = vertexCount - this.lineOffset[j]
+     }
+-    this.buffer.update(verts)
+   }
++  //Return new tree
++  n_stack[0]._color = BLACK
++  return new RedBlackTree(cmp, n_stack[0])
+ }
+ 
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.buffer.dispose()
+-  this.vao.dispose()
+-}
+-
+-function createErrorBars(options) {
+-  var gl = options.gl
+-  var buffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-      {
+-        buffer: buffer,
+-        type:   gl.FLOAT,
+-        size:   3,
+-        offset: 0,
+-        stride: 40
+-      },
+-      {
+-        buffer: buffer,
+-        type:   gl.FLOAT,
+-        size:   4,
+-        offset: 12,
+-        stride: 40
+-      },
+-      {
+-        buffer: buffer,
+-        type:   gl.FLOAT,
+-        size:   3,
+-        offset: 28,
+-        stride: 40
+-      }
+-    ])
+-
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location    = 1
+-  shader.attributes.offset.location   = 2
+-
+-  var result = new ErrorBars(gl, buffer, vao, shader)
+-  result.update(options)
+-  return result
+-}
+-
+-},{"./shaders/index":128,"gl-buffer":124,"gl-vao":232}],128:[function(require,module,exports){
+-'use strict'
+-
+-
+-var createShader = require('gl-shader')
+-
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, offset;\nattribute vec4 color;\nuniform mat4 model, view, projection;\nuniform float capSize;\nvarying vec4 fragColor;\nvarying vec3 fragPosition;\n\nvoid main() {\n  vec4 worldPosition  = model * vec4(position, 1.0);\n  worldPosition       = (worldPosition / worldPosition.w) + vec4(capSize * offset, 0.0);\n  gl_Position         = projection * view * worldPosition;\n  fragColor           = color;\n  fragPosition        = position;\n}"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\nuniform vec3 clipBounds[2];\nuniform float opacity;\nvarying vec3 fragPosition;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(fragPosition, clipBounds[0])) || any(greaterThan(fragPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = opacity * fragColor;\n}"
+-
+-module.exports = function(gl) {
+-  return createShader(gl, vertSrc, fragSrc, null, [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'offset', type: 'vec3'},
+-    {name: 'color', type: 'vec4'}
+-  ])
+-}
+-
+-},{"gl-shader":203}],129:[function(require,module,exports){
+-'use strict'
+-
+-var createTexture = require('gl-texture2d')
+-
+-module.exports = createFBO
+-
+-var colorAttachmentArrays = null
+-var FRAMEBUFFER_UNSUPPORTED
+-var FRAMEBUFFER_INCOMPLETE_ATTACHMENT
+-var FRAMEBUFFER_INCOMPLETE_DIMENSIONS
+-var FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+ 
+-function saveFBOState(gl) {
+-  var fbo = gl.getParameter(gl.FRAMEBUFFER_BINDING)
+-  var rbo = gl.getParameter(gl.RENDERBUFFER_BINDING)
+-  var tex = gl.getParameter(gl.TEXTURE_BINDING_2D)
+-  return [fbo, rbo, tex]
++//Visit all nodes inorder
++function doVisitFull(visit, node) {
++  if(node.left) {
++    var v = doVisitFull(visit, node.left)
++    if(v) { return v }
++  }
++  var v = visit(node.key, node.value)
++  if(v) { return v }
++  if(node.right) {
++    return doVisitFull(visit, node.right)
++  }
+ }
+ 
+-function restoreFBOState(gl, data) {
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, data[0])
+-  gl.bindRenderbuffer(gl.RENDERBUFFER, data[1])
+-  gl.bindTexture(gl.TEXTURE_2D, data[2])
++//Visit half nodes in order
++function doVisitHalf(lo, compare, visit, node) {
++  var l = compare(lo, node.key)
++  if(l <= 0) {
++    if(node.left) {
++      var v = doVisitHalf(lo, compare, visit, node.left)
++      if(v) { return v }
++    }
++    var v = visit(node.key, node.value)
++    if(v) { return v }
++  }
++  if(node.right) {
++    return doVisitHalf(lo, compare, visit, node.right)
++  }
+ }
+ 
+-function lazyInitColorAttachments(gl, ext) {
+-  var maxColorAttachments = gl.getParameter(ext.MAX_COLOR_ATTACHMENTS_WEBGL)
+-  colorAttachmentArrays = new Array(maxColorAttachments + 1)
+-  for(var i=0; i<=maxColorAttachments; ++i) {
+-    var x = new Array(maxColorAttachments)
+-    for(var j=0; j<i; ++j) {
+-      x[j] = gl.COLOR_ATTACHMENT0 + j
++//Visit all nodes within a range
++function doVisit(lo, hi, compare, visit, node) {
++  var l = compare(lo, node.key)
++  var h = compare(hi, node.key)
++  var v
++  if(l <= 0) {
++    if(node.left) {
++      v = doVisit(lo, hi, compare, visit, node.left)
++      if(v) { return v }
+     }
+-    for(var j=i; j<maxColorAttachments; ++j) {
+-      x[j] = gl.NONE
++    if(h > 0) {
++      v = visit(node.key, node.value)
++      if(v) { return v }
+     }
+-    colorAttachmentArrays[i] = x
+   }
+-}
+-
+-//Throw an appropriate error
+-function throwFBOError(status) {
+-  switch(status){
+-    case FRAMEBUFFER_UNSUPPORTED:
+-      throw new Error('gl-fbo: Framebuffer unsupported')
+-    case FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
+-      throw new Error('gl-fbo: Framebuffer incomplete attachment')
+-    case FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
+-      throw new Error('gl-fbo: Framebuffer incomplete dimensions')
+-    case FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
+-      throw new Error('gl-fbo: Framebuffer incomplete missing attachment')
+-    default:
+-      throw new Error('gl-fbo: Framebuffer failed for unspecified reason')
++  if(h > 0 && node.right) {
++    return doVisit(lo, hi, compare, visit, node.right)
+   }
+ }
+ 
+-//Initialize a texture object
+-function initTexture(gl, width, height, type, format, attachment) {
+-  if(!type) {
+-    return null
+-  }
+-  var result = createTexture(gl, width, height, format, type)
+-  result.magFilter = gl.NEAREST
+-  result.minFilter = gl.NEAREST
+-  result.mipSamples = 1
+-  result.bind()
+-  gl.framebufferTexture2D(gl.FRAMEBUFFER, attachment, gl.TEXTURE_2D, result.handle, 0)
+-  return result
+-}
+ 
+-//Initialize a render buffer object
+-function initRenderBuffer(gl, width, height, component, attachment) {
+-  var result = gl.createRenderbuffer()
+-  gl.bindRenderbuffer(gl.RENDERBUFFER, result)
+-  gl.renderbufferStorage(gl.RENDERBUFFER, component, width, height)
+-  gl.framebufferRenderbuffer(gl.FRAMEBUFFER, attachment, gl.RENDERBUFFER, result)
+-  return result
+-}
++proto.forEach = function rbTreeForEach(visit, lo, hi) {
++  if(!this.root) {
++    return
++  }
++  switch(arguments.length) {
++    case 1:
++      return doVisitFull(visit, this.root)
++    break
+ 
+-//Rebuild the frame buffer
+-function rebuildFBO(fbo) {
++    case 2:
++      return doVisitHalf(lo, this._compare, visit, this.root)
++    break
+ 
+-  //Save FBO state
+-  var state = saveFBOState(fbo.gl)
++    case 3:
++      if(this._compare(lo, hi) >= 0) {
++        return
++      }
++      return doVisit(lo, hi, this._compare, visit, this.root)
++    break
++  }
++}
+ 
+-  var gl = fbo.gl
+-  var handle = fbo.handle = gl.createFramebuffer()
+-  var width = fbo._shape[0]
+-  var height = fbo._shape[1]
+-  var numColors = fbo.color.length
+-  var ext = fbo._ext
+-  var useStencil = fbo._useStencil
+-  var useDepth = fbo._useDepth
+-  var colorType = fbo._colorType
++//First item in list
++Object.defineProperty(proto, "begin", {
++  get: function() {
++    var stack = []
++    var n = this.root
++    while(n) {
++      stack.push(n)
++      n = n.left
++    }
++    return new RedBlackTreeIterator(this, stack)
++  }
++})
+ 
+-  //Bind the fbo
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, handle)
++//Last item in list
++Object.defineProperty(proto, "end", {
++  get: function() {
++    var stack = []
++    var n = this.root
++    while(n) {
++      stack.push(n)
++      n = n.right
++    }
++    return new RedBlackTreeIterator(this, stack)
++  }
++})
+ 
+-  //Allocate color buffers
+-  for(var i=0; i<numColors; ++i) {
+-    fbo.color[i] = initTexture(gl, width, height, colorType, gl.RGBA, gl.COLOR_ATTACHMENT0 + i)
++//Find the ith item in the tree
++proto.at = function(idx) {
++  if(idx < 0) {
++    return new RedBlackTreeIterator(this, [])
+   }
+-  if(numColors === 0) {
+-    fbo._color_rb = initRenderBuffer(gl, width, height, gl.RGBA4, gl.COLOR_ATTACHMENT0)
+-    if(ext) {
+-      ext.drawBuffersWEBGL(colorAttachmentArrays[0])
++  var n = this.root
++  var stack = []
++  while(true) {
++    stack.push(n)
++    if(n.left) {
++      if(idx < n.left._count) {
++        n = n.left
++        continue
++      }
++      idx -= n.left._count
++    }
++    if(!idx) {
++      return new RedBlackTreeIterator(this, stack)
++    }
++    idx -= 1
++    if(n.right) {
++      if(idx >= n.right._count) {
++        break
++      }
++      n = n.right
++    } else {
++      break
+     }
+-  } else if(numColors > 1) {
+-    ext.drawBuffersWEBGL(colorAttachmentArrays[numColors])
+   }
++  return new RedBlackTreeIterator(this, [])
++}
+ 
+-  //Allocate depth/stencil buffers
+-  var WEBGL_depth_texture = gl.getExtension('WEBGL_depth_texture')
+-  if(WEBGL_depth_texture) {
+-    if(useStencil) {
+-      fbo.depth = initTexture(gl, width, height,
+-                          WEBGL_depth_texture.UNSIGNED_INT_24_8_WEBGL,
+-                          gl.DEPTH_STENCIL,
+-                          gl.DEPTH_STENCIL_ATTACHMENT)
+-    } else if(useDepth) {
+-      fbo.depth = initTexture(gl, width, height,
+-                          gl.UNSIGNED_SHORT,
+-                          gl.DEPTH_COMPONENT,
+-                          gl.DEPTH_ATTACHMENT)
++proto.ge = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d <= 0) {
++      last_ptr = stack.length
+     }
+-  } else {
+-    if(useDepth && useStencil) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_STENCIL, gl.DEPTH_STENCIL_ATTACHMENT)
+-    } else if(useDepth) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_COMPONENT16, gl.DEPTH_ATTACHMENT)
+-    } else if(useStencil) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.STENCIL_INDEX, gl.STENCIL_ATTACHMENT)
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
+   }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
++}
+ 
+-  //Check frame buffer state
+-  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
+-  if(status !== gl.FRAMEBUFFER_COMPLETE) {
+-
+-    //Release all partially allocated resources
+-    fbo._destroyed = true
++proto.gt = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d < 0) {
++      last_ptr = stack.length
++    }
++    if(d < 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
++}
+ 
+-    //Release all resources
+-    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-    gl.deleteFramebuffer(fbo.handle)
+-    fbo.handle = null
+-    if(fbo.depth) {
+-      fbo.depth.dispose()
+-      fbo.depth = null
++proto.lt = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d > 0) {
++      last_ptr = stack.length
+     }
+-    if(fbo._depth_rb) {
+-      gl.deleteRenderbuffer(fbo._depth_rb)
+-      fbo._depth_rb = null
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
+-    for(var i=0; i<fbo.color.length; ++i) {
+-      fbo.color[i].dispose()
+-      fbo.color[i] = null
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
++}
++
++proto.le = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d >= 0) {
++      last_ptr = stack.length
+     }
+-    if(fbo._color_rb) {
+-      gl.deleteRenderbuffer(fbo._color_rb)
+-      fbo._color_rb = null
++    if(d < 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
++}
+ 
+-    restoreFBOState(gl, state)
++//Finds the item with key if it exists
++proto.find = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d === 0) {
++      return new RedBlackTreeIterator(this, stack)
++    }
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
++  }
++  return new RedBlackTreeIterator(this, [])
++}
+ 
+-    //Throw the frame buffer error
+-    throwFBOError(status)
++//Removes item with key from tree
++proto.remove = function(key) {
++  var iter = this.find(key)
++  if(iter) {
++    return iter.remove()
+   }
++  return this
++}
+ 
+-  //Everything ok, let's get on with life
+-  restoreFBOState(gl, state)
++//Returns the item at `key`
++proto.get = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  while(n) {
++    var d = cmp(key, n.key)
++    if(d === 0) {
++      return n.value
++    }
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
++  }
++  return
+ }
+ 
+-function Framebuffer(gl, width, height, colorType, numColors, useDepth, useStencil, ext) {
++//Iterator for red black tree
++function RedBlackTreeIterator(tree, stack) {
++  this.tree = tree
++  this._stack = stack
++}
+ 
+-  //Handle and set properties
+-  this.gl = gl
+-  this._shape = [width|0, height|0]
+-  this._destroyed = false
+-  this._ext = ext
++var iproto = RedBlackTreeIterator.prototype
+ 
+-  //Allocate buffers
+-  this.color = new Array(numColors)
+-  for(var i=0; i<numColors; ++i) {
+-    this.color[i] = null
++//Test if iterator is valid
++Object.defineProperty(iproto, "valid", {
++  get: function() {
++    return this._stack.length > 0
+   }
+-  this._color_rb = null
+-  this.depth = null
+-  this._depth_rb = null
++})
+ 
+-  //Save depth and stencil flags
+-  this._colorType = colorType
+-  this._useDepth = useDepth
+-  this._useStencil = useStencil
++//Node of the iterator
++Object.defineProperty(iproto, "node", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1]
++    }
++    return null
++  },
++  enumerable: true
++})
+ 
+-  //Shape vector for resizing
+-  var parent = this
+-  var shapeVector = [width|0, height|0]
+-  Object.defineProperties(shapeVector, {
+-    0: {
+-      get: function() {
+-        return parent._shape[0]
+-      },
+-      set: function(w) {
+-        return parent.width = w
++//Makes a copy of an iterator
++iproto.clone = function() {
++  return new RedBlackTreeIterator(this.tree, this._stack.slice())
++}
++
++//Swaps two nodes
++function swapNode(n, v) {
++  n.key = v.key
++  n.value = v.value
++  n.left = v.left
++  n.right = v.right
++  n._color = v._color
++  n._count = v._count
++}
++
++//Fix up a double black node in a tree
++function fixDoubleBlack(stack) {
++  var n, p, s, z
++  for(var i=stack.length-1; i>=0; --i) {
++    n = stack[i]
++    if(i === 0) {
++      n._color = BLACK
++      return
++    }
++    //console.log("visit node:", n.key, i, stack[i].key, stack[i-1].key)
++    p = stack[i-1]
++    if(p.left === n) {
++      //console.log("left child")
++      s = p.right
++      if(s.right && s.right._color === RED) {
++        //console.log("case 1: right sibling child red")
++        s = p.right = cloneNode(s)
++        z = s.right = cloneNode(s.right)
++        p.right = s.left
++        s.left = p
++        s.right = z
++        s._color = p._color
++        n._color = BLACK
++        p._color = BLACK
++        z._color = BLACK
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = s
++          } else {
++            pp.right = s
++          }
++        }
++        stack[i-1] = s
++        return
++      } else if(s.left && s.left._color === RED) {
++        //console.log("case 1: left sibling child red")
++        s = p.right = cloneNode(s)
++        z = s.left = cloneNode(s.left)
++        p.right = z.left
++        s.left = z.right
++        z.left = p
++        z.right = s
++        z._color = p._color
++        p._color = BLACK
++        s._color = BLACK
++        n._color = BLACK
++        recount(p)
++        recount(s)
++        recount(z)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = z
++          } else {
++            pp.right = z
++          }
++        }
++        stack[i-1] = z
++        return
++      }
++      if(s._color === BLACK) {
++        if(p._color === RED) {
++          //console.log("case 2: black sibling, red parent", p.right.value)
++          p._color = BLACK
++          p.right = repaint(RED, s)
++          return
++        } else {
++          //console.log("case 2: black sibling, black parent", p.right.value)
++          p.right = repaint(RED, s)
++          continue  
++        }
++      } else {
++        //console.log("case 3: red sibling")
++        s = cloneNode(s)
++        p.right = s.left
++        s.left = p
++        s._color = p._color
++        p._color = RED
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = s
++          } else {
++            pp.right = s
++          }
++        }
++        stack[i-1] = s
++        stack[i] = p
++        if(i+1 < stack.length) {
++          stack[i+1] = n
++        } else {
++          stack.push(n)
++        }
++        i = i+2
++      }
++    } else {
++      //console.log("right child")
++      s = p.left
++      if(s.left && s.left._color === RED) {
++        //console.log("case 1: left sibling child red", p.value, p._color)
++        s = p.left = cloneNode(s)
++        z = s.left = cloneNode(s.left)
++        p.left = s.right
++        s.right = p
++        s.left = z
++        s._color = p._color
++        n._color = BLACK
++        p._color = BLACK
++        z._color = BLACK
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = s
++          } else {
++            pp.left = s
++          }
++        }
++        stack[i-1] = s
++        return
++      } else if(s.right && s.right._color === RED) {
++        //console.log("case 1: right sibling child red")
++        s = p.left = cloneNode(s)
++        z = s.right = cloneNode(s.right)
++        p.left = z.right
++        s.right = z.left
++        z.right = p
++        z.left = s
++        z._color = p._color
++        p._color = BLACK
++        s._color = BLACK
++        n._color = BLACK
++        recount(p)
++        recount(s)
++        recount(z)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = z
++          } else {
++            pp.left = z
++          }
++        }
++        stack[i-1] = z
++        return
+       }
+-    },
+-    1: {
+-      get: function() {
+-        return parent._shape[1]
+-      },
+-      set: function(h) {
+-        return parent.height = h
++      if(s._color === BLACK) {
++        if(p._color === RED) {
++          //console.log("case 2: black sibling, red parent")
++          p._color = BLACK
++          p.left = repaint(RED, s)
++          return
++        } else {
++          //console.log("case 2: black sibling, black parent")
++          p.left = repaint(RED, s)
++          continue  
++        }
++      } else {
++        //console.log("case 3: red sibling")
++        s = cloneNode(s)
++        p.left = s.right
++        s.right = p
++        s._color = p._color
++        p._color = RED
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = s
++          } else {
++            pp.left = s
++          }
++        }
++        stack[i-1] = s
++        stack[i] = p
++        if(i+1 < stack.length) {
++          stack[i+1] = n
++        } else {
++          stack.push(n)
++        }
++        i = i+2
+       }
+     }
+-  })
+-  this._shapeVector = shapeVector
+-
+-  //Initialize all attachments
+-  rebuildFBO(this)
+-}
+-
+-var proto = Framebuffer.prototype
+-
+-function reshapeFBO(fbo, w, h) {
+-  //If fbo is invalid, just skip this
+-  if(fbo._destroyed) {
+-    throw new Error('gl-fbo: Can\'t resize destroyed FBO')
+   }
++}
+ 
+-  //Don't resize if no change in shape
+-  if( (fbo._shape[0] === w) &&
+-      (fbo._shape[1] === h) ) {
+-    return
++//Removes item at iterator from tree
++iproto.remove = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
++    return this.tree
+   }
+-
+-  var gl = fbo.gl
+-
+-  //Check parameter ranges
+-  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
+-  if( w < 0 || w > maxFBOSize ||
+-      h < 0 || h > maxFBOSize) {
+-    throw new Error('gl-fbo: Can\'t resize FBO, invalid dimensions')
++  //First copy path to node
++  var cstack = new Array(stack.length)
++  var n = stack[stack.length-1]
++  cstack[cstack.length-1] = new RBNode(n._color, n.key, n.value, n.left, n.right, n._count)
++  for(var i=stack.length-2; i>=0; --i) {
++    var n = stack[i]
++    if(n.left === stack[i+1]) {
++      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
++    } else {
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++    }
+   }
+ 
+-  //Update shape
+-  fbo._shape[0] = w
+-  fbo._shape[1] = h
++  //Get node
++  n = cstack[cstack.length-1]
++  //console.log("start remove: ", n.value)
+ 
+-  //Save framebuffer state
+-  var state = saveFBOState(gl)
++  //If not leaf, then swap with previous node
++  if(n.left && n.right) {
++    //console.log("moving to leaf")
+ 
+-  //Resize framebuffer attachments
+-  for(var i=0; i<fbo.color.length; ++i) {
+-    fbo.color[i].shape = fbo._shape
+-  }
+-  if(fbo._color_rb) {
+-    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._color_rb)
+-    gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fbo._shape[0], fbo._shape[1])
+-  }
+-  if(fbo.depth) {
+-    fbo.depth.shape = fbo._shape
+-  }
+-  if(fbo._depth_rb) {
+-    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._depth_rb)
+-    if(fbo._useDepth && fbo._useStencil) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, fbo._shape[0], fbo._shape[1])
+-    } else if(fbo._useDepth) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, fbo._shape[0], fbo._shape[1])
+-    } else if(fbo._useStencil) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.STENCIL_INDEX, fbo._shape[0], fbo._shape[1])
++    //First walk to previous leaf
++    var split = cstack.length
++    n = n.left
++    while(n.right) {
++      cstack.push(n)
++      n = n.right
+     }
+-  }
++    //Copy path to leaf
++    var v = cstack[split-1]
++    cstack.push(new RBNode(n._color, v.key, v.value, n.left, n.right, n._count))
++    cstack[split-1].key = n.key
++    cstack[split-1].value = n.value
+ 
+-  //Check FBO status after resize, if something broke then die in a fire
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo.handle)
+-  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
+-  if(status !== gl.FRAMEBUFFER_COMPLETE) {
+-    fbo.dispose()
+-    restoreFBOState(gl, state)
+-    throwFBOError(status)
++    //Fix up stack
++    for(var i=cstack.length-2; i>=split; --i) {
++      n = cstack[i]
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++    }
++    cstack[split-1].left = cstack[split]
+   }
++  //console.log("stack=", cstack.map(function(v) { return v.value }))
+ 
+-  //Restore framebuffer state
+-  restoreFBOState(gl, state)
+-}
+-
+-Object.defineProperties(proto, {
+-  'shape': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return [0,0]
+-      }
+-      return this._shapeVector
+-    },
+-    set: function(x) {
+-      if(!Array.isArray(x)) {
+-        x = [x|0, x|0]
++  //Remove leaf node
++  n = cstack[cstack.length-1]
++  if(n._color === RED) {
++    //Easy case: removing red leaf
++    //console.log("RED leaf")
++    var p = cstack[cstack.length-2]
++    if(p.left === n) {
++      p.left = null
++    } else if(p.right === n) {
++      p.right = null
++    }
++    cstack.pop()
++    for(var i=0; i<cstack.length; ++i) {
++      cstack[i]._count--
++    }
++    return new RedBlackTree(this.tree._compare, cstack[0])
++  } else {
++    if(n.left || n.right) {
++      //Second easy case:  Single child black parent
++      //console.log("BLACK single child")
++      if(n.left) {
++        swapNode(n, n.left)
++      } else if(n.right) {
++        swapNode(n, n.right)
+       }
+-      if(x.length !== 2) {
+-        throw new Error('gl-fbo: Shape vector must be length 2')
++      //Child must be red, so repaint it black to balance color
++      n._color = BLACK
++      for(var i=0; i<cstack.length-1; ++i) {
++        cstack[i]._count--
+       }
+-
+-      var w = x[0]|0
+-      var h = x[1]|0
+-      reshapeFBO(this, w, h)
+-
+-      return [w, h]
+-    },
+-    enumerable: false
+-  },
+-  'width': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return 0
++      return new RedBlackTree(this.tree._compare, cstack[0])
++    } else if(cstack.length === 1) {
++      //Third easy case: root
++      //console.log("ROOT")
++      return new RedBlackTree(this.tree._compare, null)
++    } else {
++      //Hard case: Repaint n, and then do some nasty stuff
++      //console.log("BLACK leaf no children")
++      for(var i=0; i<cstack.length; ++i) {
++        cstack[i]._count--
+       }
+-      return this._shape[0]
+-    },
+-    set: function(w) {
+-      w = w|0
+-      reshapeFBO(this, w, this._shape[1])
+-      return w
+-    },
+-    enumerable: false
+-  },
+-  'height': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return 0
++      var parent = cstack[cstack.length-2]
++      fixDoubleBlack(cstack)
++      //Fix up links
++      if(parent.left === n) {
++        parent.left = null
++      } else {
++        parent.right = null
+       }
+-      return this._shape[1]
+-    },
+-    set: function(h) {
+-      h = h|0
+-      reshapeFBO(this, this._shape[0], h)
+-      return h
+-    },
+-    enumerable: false
+-  }
+-})
+-
+-proto.bind = function() {
+-  if(this._destroyed) {
+-    return
++    }
+   }
+-  var gl = this.gl
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, this.handle)
+-  gl.viewport(0, 0, this._shape[0], this._shape[1])
++  return new RedBlackTree(this.tree._compare, cstack[0])
+ }
+ 
+-proto.dispose = function() {
+-  if(this._destroyed) {
++//Returns key
++Object.defineProperty(iproto, "key", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1].key
++    }
+     return
+-  }
+-  this._destroyed = true
+-  var gl = this.gl
+-  gl.deleteFramebuffer(this.handle)
+-  this.handle = null
+-  if(this.depth) {
+-    this.depth.dispose()
+-    this.depth = null
+-  }
+-  if(this._depth_rb) {
+-    gl.deleteRenderbuffer(this._depth_rb)
+-    this._depth_rb = null
+-  }
+-  for(var i=0; i<this.color.length; ++i) {
+-    this.color[i].dispose()
+-    this.color[i] = null
+-  }
+-  if(this._color_rb) {
+-    gl.deleteRenderbuffer(this._color_rb)
+-    this._color_rb = null
+-  }
+-}
+-
+-function createFBO(gl, width, height, options) {
++  },
++  enumerable: true
++})
+ 
+-  //Update frame buffer error code values
+-  if(!FRAMEBUFFER_UNSUPPORTED) {
+-    FRAMEBUFFER_UNSUPPORTED = gl.FRAMEBUFFER_UNSUPPORTED
+-    FRAMEBUFFER_INCOMPLETE_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT
+-    FRAMEBUFFER_INCOMPLETE_DIMENSIONS = gl.FRAMEBUFFER_INCOMPLETE_DIMENSIONS
+-    FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+-  }
++//Returns value
++Object.defineProperty(iproto, "value", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1].value
++    }
++    return
++  },
++  enumerable: true
++})
+ 
+-  //Lazily initialize color attachment arrays
+-  var WEBGL_draw_buffers = gl.getExtension('WEBGL_draw_buffers')
+-  if(!colorAttachmentArrays && WEBGL_draw_buffers) {
+-    lazyInitColorAttachments(gl, WEBGL_draw_buffers)
+-  }
+ 
+-  //Special case: Can accept an array as argument
+-  if(Array.isArray(width)) {
+-    options = height
+-    height = width[1]|0
+-    width = width[0]|0
+-  }
++//Returns the position of this iterator in the sorted list
++Object.defineProperty(iproto, "index", {
++  get: function() {
++    var idx = 0
++    var stack = this._stack
++    if(stack.length === 0) {
++      var r = this.tree.root
++      if(r) {
++        return r._count
++      }
++      return 0
++    } else if(stack[stack.length-1].left) {
++      idx = stack[stack.length-1].left._count
++    }
++    for(var s=stack.length-2; s>=0; --s) {
++      if(stack[s+1] === stack[s].right) {
++        ++idx
++        if(stack[s].left) {
++          idx += stack[s].left._count
++        }
++      }
++    }
++    return idx
++  },
++  enumerable: true
++})
+ 
+-  if(typeof width !== 'number') {
+-    throw new Error('gl-fbo: Missing shape parameter')
++//Advances iterator to next element in list
++iproto.next = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
++    return
+   }
+-
+-  //Validate width/height properties
+-  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
+-  if(width < 0 || width > maxFBOSize || height < 0 || height > maxFBOSize) {
+-    throw new Error('gl-fbo: Parameters are too large for FBO')
++  var n = stack[stack.length-1]
++  if(n.right) {
++    n = n.right
++    while(n) {
++      stack.push(n)
++      n = n.left
++    }
++  } else {
++    stack.pop()
++    while(stack.length > 0 && stack[stack.length-1].right === n) {
++      n = stack[stack.length-1]
++      stack.pop()
++    }
+   }
++}
+ 
+-  //Handle each option type
+-  options = options || {}
+-
+-  //Figure out number of color buffers to use
+-  var numColors = 1
+-  if('color' in options) {
+-    numColors = Math.max(options.color|0, 0)
+-    if(numColors < 0) {
+-      throw new Error('gl-fbo: Must specify a nonnegative number of colors')
++//Checks if iterator is at end of tree
++Object.defineProperty(iproto, "hasNext", {
++  get: function() {
++    var stack = this._stack
++    if(stack.length === 0) {
++      return false
+     }
+-    if(numColors > 1) {
+-      //Check if multiple render targets supported
+-      if(!WEBGL_draw_buffers) {
+-        throw new Error('gl-fbo: Multiple draw buffer extension not supported')
+-      } else if(numColors > gl.getParameter(WEBGL_draw_buffers.MAX_COLOR_ATTACHMENTS_WEBGL)) {
+-        throw new Error('gl-fbo: Context does not support ' + numColors + ' draw buffers')
++    if(stack[stack.length-1].right) {
++      return true
++    }
++    for(var s=stack.length-1; s>0; --s) {
++      if(stack[s-1].left === stack[s]) {
++        return true
+       }
+     }
++    return false
+   }
++})
+ 
+-  //Determine whether to use floating point textures
+-  var colorType = gl.UNSIGNED_BYTE
+-  var OES_texture_float = gl.getExtension('OES_texture_float')
+-  if(options.float && numColors > 0) {
+-    if(!OES_texture_float) {
+-      throw new Error('gl-fbo: Context does not support floating point textures')
+-    }
+-    colorType = gl.FLOAT
+-  } else if(options.preferFloat && numColors > 0) {
+-    if(OES_texture_float) {
+-      colorType = gl.FLOAT
++//Update value
++iproto.update = function(value) {
++  var stack = this._stack
++  if(stack.length === 0) {
++    throw new Error("Can't update empty node!")
++  }
++  var cstack = new Array(stack.length)
++  var n = stack[stack.length-1]
++  cstack[cstack.length-1] = new RBNode(n._color, n.key, value, n.left, n.right, n._count)
++  for(var i=stack.length-2; i>=0; --i) {
++    n = stack[i]
++    if(n.left === stack[i+1]) {
++      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
++    } else {
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
+     }
+   }
++  return new RedBlackTree(this.tree._compare, cstack[0])
++}
+ 
+-  //Check if we should use depth buffer
+-  var useDepth = true
+-  if('depth' in options) {
+-    useDepth = !!options.depth
++//Moves iterator backward one element
++iproto.prev = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
++    return
+   }
+-
+-  //Check if we should use a stencil buffer
+-  var useStencil = false
+-  if('stencil' in options) {
+-    useStencil = !!options.stencil
++  var n = stack[stack.length-1]
++  if(n.left) {
++    n = n.left
++    while(n) {
++      stack.push(n)
++      n = n.right
++    }
++  } else {
++    stack.pop()
++    while(stack.length > 0 && stack[stack.length-1].left === n) {
++      n = stack[stack.length-1]
++      stack.pop()
++    }
+   }
+-
+-  return new Framebuffer(
+-    gl,
+-    width,
+-    height,
+-    colorType,
+-    numColors,
+-    useDepth,
+-    useStencil,
+-    WEBGL_draw_buffers)
+ }
+ 
+-},{"gl-texture2d":228}],130:[function(require,module,exports){
+-
+-
+-exports.lineVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\nvoid main() {\n  vec2 dir = (matrix * vec3(d, 0)).xy;\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = 0.5 * width *\n    normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n}\n"
+-exports.lineFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}\n"
+-exports.mitreVertex   = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 p;\n\nuniform mat3  matrix;\nuniform vec2 screenShape;\nuniform float radius;\n\nvoid main() {\n  vec3 pp = matrix * vec3(p, 1);\n  gl_Position  = vec4(pp.xy, 0, pp.z);\n  gl_PointSize = radius;\n}\n"
+-exports.mitreFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}\n"
+-exports.pickVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\nattribute vec4 pick0, pick1;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = width *\n    normalize(screenShape.yx * vec2(d.y, -d.x)) / screenShape.xy;\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}\n"
+-exports.pickFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}\n"
+-exports.fillVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 projectAxis;\nuniform float projectValue;\nuniform float depth;\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 p = base.xy / base.z;\n  if(d.y < 0.0 || (d.y == 0.0 && d.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}\n"
+-exports.fillFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
+-
+-},{}],131:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = createLinePlot
+-
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var createTexture = require('gl-texture2d')
+-var ndarray = require('ndarray')
+-var pool = require('typedarray-pool')
+-
+-var SHADERS = require('./lib/shaders')
+-
+-function GLLine2D(
+-  plot,
+-  dashPattern,
+-  lineBuffer,
+-  pickBuffer,
+-  lineShader,
+-  mitreShader,
+-  fillShader,
+-  pickShader) {
+-
+-  this.plot         = plot
+-  this.dashPattern  = dashPattern
+-  this.lineBuffer   = lineBuffer
+-  this.pickBuffer   = pickBuffer
+-  this.lineShader   = lineShader
+-  this.mitreShader  = mitreShader
+-  this.fillShader   = fillShader
+-  this.pickShader   = pickShader
+-  this.usingDashes  = false
++//Checks if iterator is at start of tree
++Object.defineProperty(iproto, "hasPrev", {
++  get: function() {
++    var stack = this._stack
++    if(stack.length === 0) {
++      return false
++    }
++    if(stack[stack.length-1].left) {
++      return true
++    }
++    for(var s=stack.length-1; s>0; --s) {
++      if(stack[s-1].right === stack[s]) {
++        return true
++      }
++    }
++    return false
++  }
++})
+ 
+-  this.bounds     = [Infinity, Infinity, -Infinity, -Infinity]
++//Default comparison function
++function defaultCompare(a, b) {
++  if(a < b) {
++    return -1
++  }
++  if(a > b) {
++    return 1
++  }
++  return 0
++}
+ 
+-  this.width      = 1
+-  this.color      = [0,0,1,1]
++//Build a tree
++function createRBTree(compare) {
++  return new RedBlackTree(compare || defaultCompare, null)
++}
++},{}],102:[function(require,module,exports){
++// transliterated from the python snippet here:
++// http://en.wikipedia.org/wiki/Lanczos_approximation
+ 
+-  //Fill to axes
+-  this.fill       = [false, false, false, false]
+-  this.fillColor  = [[0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1]]
++var g = 7;
++var p = [
++    0.99999999999980993,
++    676.5203681218851,
++    -1259.1392167224028,
++    771.32342877765313,
++    -176.61502916214059,
++    12.507343278686905,
++    -0.13857109526572012,
++    9.9843695780195716e-6,
++    1.5056327351493116e-7
++];
+ 
+-  this.data       = null
+-  this.numPoints  = 0
+-  this.vertCount  = 0
++var g_ln = 607/128;
++var p_ln = [
++    0.99999999999999709182,
++    57.156235665862923517,
++    -59.597960355475491248,
++    14.136097974741747174,
++    -0.49191381609762019978,
++    0.33994649984811888699e-4,
++    0.46523628927048575665e-4,
++    -0.98374475304879564677e-4,
++    0.15808870322491248884e-3,
++    -0.21026444172410488319e-3,
++    0.21743961811521264320e-3,
++    -0.16431810653676389022e-3,
++    0.84418223983852743293e-4,
++    -0.26190838401581408670e-4,
++    0.36899182659531622704e-5
++];
+ 
+-  this.pickOffset = 0
++// Spouge approximation (suitable for large arguments)
++function lngamma(z) {
+ 
+-  this.lodBuffer = []
++    if(z < 0) return Number('0/0');
++    var x = p_ln[0];
++    for(var i = p_ln.length - 1; i > 0; --i) x += p_ln[i] / (z + i);
++    var t = z + g_ln + 0.5;
++    return .5*Math.log(2*Math.PI)+(z+.5)*Math.log(t)-t+Math.log(x)-Math.log(z);
+ }
+ 
+-var proto = GLLine2D.prototype
++module.exports = function gamma (z) {
++    if (z < 0.5) {
++        return Math.PI / (Math.sin(Math.PI * z) * gamma(1 - z));
++    }
++    else if(z > 100) return Math.exp(lngamma(z));
++    else {
++        z -= 1;
++        var x = p[0];
++        for (var i = 1; i < g + 2; i++) {
++            x += p[i] / (z + i);
++        }
++        var t = z + g + 0.5;
+ 
+-proto.draw = (function() {
+-var MATRIX = [1, 0, 0,
+-              0, 1, 0,
+-              0, 0, 1]
+-var SCREEN_SHAPE = [0,0]
+-var PX_AXIS = [1,0]
+-var NX_AXIS = [-1,0]
+-var PY_AXIS = [0,1]
+-var NY_AXIS = [0,-1]
+-return function() {
+-  var plot      = this.plot
+-  var color     = this.color
+-  var width     = this.width
+-  var numPoints = this.numPoints
+-  var bounds    = this.bounds
+-  var count     = this.vertCount
++        return Math.sqrt(2 * Math.PI)
++            * Math.pow(t, z + 0.5)
++            * Math.exp(-t)
++            * x
++        ;
++    }
++};
+ 
+-  if(!count) {
+-    return
+-  }
++module.exports.log = lngamma;
+ 
+-  var gl        = plot.gl
+-  var viewBox   = plot.viewBox
+-  var dataBox   = plot.dataBox
+-  var pixelRatio = plot.pixelRatio
++},{}],103:[function(require,module,exports){
++var wgs84 = require('wgs84');
+ 
+-  var boundX  = bounds[2] - bounds[0]
+-  var boundY  = bounds[3] - bounds[1]
+-  var dataX   = dataBox[2] - dataBox[0]
+-  var dataY   = dataBox[3] - dataBox[1]
+-  var screenX = viewBox[2] - viewBox[0]
+-  var screenY = viewBox[3] - viewBox[1]
++module.exports.geometry = geometry;
++module.exports.ring = ringArea;
+ 
+-  MATRIX[0] = 2.0 * boundX / dataX
+-  MATRIX[4] = 2.0 * boundY / dataY
+-  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++function geometry(_) {
++    if (_.type === 'Polygon') return polygonArea(_.coordinates);
++    else if (_.type === 'MultiPolygon') {
++        var area = 0;
++        for (var i = 0; i < _.coordinates.length; i++) {
++            area += polygonArea(_.coordinates[i]);
++        }
++        return area;
++    } else {
++        return null;
++    }
++}
+ 
+-  SCREEN_SHAPE[0] = screenX
+-  SCREEN_SHAPE[1] = screenY
++function polygonArea(coords) {
++    var area = 0;
++    if (coords && coords.length > 0) {
++        area += Math.abs(ringArea(coords[0]));
++        for (var i = 1; i < coords.length; i++) {
++            area -= Math.abs(ringArea(coords[i]));
++        }
++    }
++    return area;
++}
+ 
+-  var buffer    = this.lineBuffer
+-  buffer.bind()
++/**
++ * Calculate the approximate area of the polygon were it projected onto
++ *     the earth.  Note that this area will be positive if ring is oriented
++ *     clockwise, otherwise it will be negative.
++ *
++ * Reference:
++ * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
++ *     Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
++ *     Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
++ *
++ * Returns:
++ * {float} The approximate signed geodesic area of the polygon in square
++ *     meters.
++ */
+ 
+-  var fill = this.fill
++function ringArea(coords) {
++    var area = 0;
+ 
+-  if(fill[0] || fill[1] || fill[2] || fill[3]) {
++    if (coords.length > 2) {
++        var p1, p2;
++        for (var i = 0; i < coords.length - 1; i++) {
++            p1 = coords[i];
++            p2 = coords[i + 1];
++            area += rad(p2[0] - p1[0]) * (2 + Math.sin(rad(p1[1])) + Math.sin(rad(p2[1])));
++        }
+ 
+-    var fillShader = this.fillShader
+-    fillShader.bind()
++        area = area * wgs84.RADIUS * wgs84.RADIUS / 2;
++    }
+ 
+-    var fillUniforms = fillShader.uniforms
+-    fillUniforms.matrix = MATRIX
+-    fillUniforms.depth = plot.nextDepthValue()
++    return area;
++}
+ 
+-    var fillAttributes = fillShader.attributes
+-    fillAttributes.a.pointer(gl.FLOAT, false, 16, 0)
+-    fillAttributes.d.pointer(gl.FLOAT, false, 16, 8)
++function rad(_) {
++    return _ * Math.PI / 180;
++}
+ 
+-    gl.depthMask(true)
+-    gl.enable(gl.DEPTH_TEST)
++},{"wgs84":470}],104:[function(require,module,exports){
++var geojsonArea = require('geojson-area');
+ 
+-    var fillColor = this.fillColor
+-    if(fill[0]) {
+-      fillUniforms.color        = fillColor[0]
+-      fillUniforms.projectAxis  = NX_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
+-    }
++module.exports = rewind;
+ 
+-    if(fill[1]) {
+-      fillUniforms.color        = fillColor[1]
+-      fillUniforms.projectAxis  = NY_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
++function rewind(gj, outer) {
++    switch ((gj && gj.type) || null) {
++        case 'FeatureCollection':
++            gj.features = gj.features.map(curryOuter(rewind, outer));
++            return gj;
++        case 'Feature':
++            gj.geometry = rewind(gj.geometry, outer);
++            return gj;
++        case 'Polygon':
++        case 'MultiPolygon':
++            return correct(gj, outer);
++        default:
++            return gj;
+     }
++}
+ 
+-    if(fill[2]) {
+-      fillUniforms.color        = fillColor[2]
+-      fillUniforms.projectAxis  = PX_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
+-    }
++function curryOuter(a, b) {
++    return function(_) { return a(_, b); };
++}
+ 
+-    if(fill[3]) {
+-      fillUniforms.color        = fillColor[3]
+-      fillUniforms.projectAxis  = PY_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
++function correct(_, outer) {
++    if (_.type === 'Polygon') {
++        _.coordinates = correctRings(_.coordinates, outer);
++    } else if (_.type === 'MultiPolygon') {
++        _.coordinates = _.coordinates.map(curryOuter(correctRings, outer));
+     }
++    return _;
++}
+ 
+-    gl.depthMask(false)
+-    gl.disable(gl.DEPTH_TEST)
+-  }
+-
+-  var shader    = this.lineShader
+-  shader.bind()
+-
+-  var uniforms = shader.uniforms
+-  uniforms.matrix = MATRIX
+-  uniforms.color  = color
+-  uniforms.width  = width * pixelRatio
+-  uniforms.screenShape = SCREEN_SHAPE
+-  uniforms.dashPattern = this.dashPattern.bind()
+-  uniforms.dashLength = this.dashLength * pixelRatio
+-
+-  var attributes = shader.attributes
+-  attributes.a.pointer(gl.FLOAT, false, 16, 0)
+-  attributes.d.pointer(gl.FLOAT, false, 16, 8)
++function correctRings(_, outer) {
++    outer = !!outer;
++    _[0] = wind(_[0], !outer);
++    for (var i = 1; i < _.length; i++) {
++        _[i] = wind(_[i], outer);
++    }
++    return _;
++}
+ 
+-  gl.drawArrays(gl.TRIANGLES, 0, count)
++function wind(_, dir) {
++    return cw(_) === dir ? _ : _.reverse();
++}
+ 
+-  //Draw mitres
+-  if(width > 2 && !this.usingDashes) {
+-    var mshader = this.mitreShader
+-    mshader.bind()
++function cw(_) {
++    return geojsonArea.ring(_) >= 0;
++}
+ 
+-    var muniforms = mshader.uniforms
+-    muniforms.matrix = MATRIX
+-    muniforms.color  = color
+-    muniforms.screenShape = SCREEN_SHAPE
+-    muniforms.radius = width * pixelRatio
++},{"geojson-area":103}],105:[function(require,module,exports){
++'use strict';
+ 
+-    mshader.attributes.p.pointer(gl.FLOAT, false, 48, 0)
+-    gl.drawArrays(gl.POINTS, 0, (count/3)|0)
+-  }
+-}
+-})()
++module.exports = clip;
+ 
+-proto.drawPick = (function() {
+-  var MATRIX = [1, 0, 0,
+-                0, 1, 0,
+-                0, 0, 1]
+-  var SCREEN_SHAPE = [0,0]
+-  var PICK_OFFSET = [0,0,0,0]
+-  return function(pickOffset) {
+-    var plot      = this.plot
+-    var shader    = this.pickShader
+-    var buffer    = this.lineBuffer
+-    var pickBuffer= this.pickBuffer
+-    var width     = this.width
+-    var numPoints = this.numPoints
+-    var bounds    = this.bounds
+-    var count     = this.vertCount
++var createFeature = require('./feature');
+ 
+-    var gl        = plot.gl
+-    var viewBox   = plot.viewBox
+-    var dataBox   = plot.dataBox
+-    var pixelRatio = plot.pickPixelRatio
++/* clip features between two axis-parallel lines:
++ *     |        |
++ *  ___|___     |     /
++ * /   |   \____|____/
++ *     |        |
++ */
+ 
+-    var boundX  = bounds[2]  - bounds[0]
+-    var boundY  = bounds[3]  - bounds[1]
+-    var dataX   = dataBox[2] - dataBox[0]
+-    var dataY   = dataBox[3] - dataBox[1]
+-    var screenX = viewBox[2] - viewBox[0]
+-    var screenY = viewBox[3] - viewBox[1]
++function clip(features, scale, k1, k2, axis, intersect, minAll, maxAll) {
+ 
+-    this.pickOffset = pickOffset
++    k1 /= scale;
++    k2 /= scale;
+ 
+-    if(!count) {
+-      return pickOffset + numPoints
+-    }
++    if (minAll >= k1 && maxAll <= k2) return features; // trivial accept
++    else if (minAll > k2 || maxAll < k1) return null; // trivial reject
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++    var clipped = [];
+ 
+-    SCREEN_SHAPE[0] = screenX
+-    SCREEN_SHAPE[1] = screenY
++    for (var i = 0; i < features.length; i++) {
+ 
+-    PICK_OFFSET[0] =  pickOffset       & 0xff
+-    PICK_OFFSET[1] = (pickOffset>>>8)  & 0xff
+-    PICK_OFFSET[2] = (pickOffset>>>16) & 0xff
+-    PICK_OFFSET[3] =  pickOffset>>>24
++        var feature = features[i],
++            geometry = feature.geometry,
++            type = feature.type,
++            min, max;
+ 
+-    shader.bind()
++        min = feature.min[axis];
++        max = feature.max[axis];
+ 
+-    var uniforms = shader.uniforms
+-    uniforms.matrix      = MATRIX
+-    uniforms.width       = width * pixelRatio
+-    uniforms.pickOffset  = PICK_OFFSET
+-    uniforms.screenShape = SCREEN_SHAPE
++        if (min >= k1 && max <= k2) { // trivial accept
++            clipped.push(feature);
++            continue;
++        } else if (min > k2 || max < k1) continue; // trivial reject
+ 
+-    var attributes = shader.attributes
++        var slices = type === 1 ?
++                clipPoints(geometry, k1, k2, axis) :
++                clipGeometry(geometry, k1, k2, axis, intersect, type === 3);
+ 
+-    buffer.bind()
+-    attributes.a.pointer(gl.FLOAT, false, 16, 0)
+-    attributes.d.pointer(gl.FLOAT, false, 16, 8)
++        if (slices.length) {
++            // if a feature got clipped, it will likely get clipped on the next zoom level as well,
++            // so there's no need to recalculate bboxes
++            clipped.push(createFeature(feature.tags, type, slices, feature.id));
++        }
++    }
+ 
+-    pickBuffer.bind()
+-    attributes.pick0.pointer(gl.UNSIGNED_BYTE, false, 8, 0)
+-    attributes.pick1.pointer(gl.UNSIGNED_BYTE, false, 8, 4)
++    return clipped.length ? clipped : null;
++}
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, count)
++function clipPoints(geometry, k1, k2, axis) {
++    var slice = [];
+ 
+-    return pickOffset + numPoints
+-  }
+-})()
++    for (var i = 0; i < geometry.length; i++) {
++        var a = geometry[i],
++            ak = a[axis];
+ 
+-proto.pick = function(x, y, value) {
+-  var pickOffset = this.pickOffset
+-  var pointCount = this.numPoints
+-  if(value < pickOffset || value >= pickOffset + pointCount) {
+-    return null
+-  }
+-  var pointId = value - pickOffset
+-  var points = this.data
+-  return {
+-    object:    this,
+-    pointId:   pointId,
+-    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+-  }
++        if (ak >= k1 && ak <= k2) slice.push(a);
++    }
++    return slice;
+ }
+ 
+-function deepCopy(arr) {
+-  return arr.map(function(x) {
+-    return x.slice()
+-  })
+-}
++function clipGeometry(geometry, k1, k2, axis, intersect, closed) {
+ 
+-proto.update = function(options) {
+-  options = options || {}
++    var slices = [];
+ 
+-  var gl = this.plot.gl
++    for (var i = 0; i < geometry.length; i++) {
+ 
+-  var connectGaps = !!options.connectGaps
++        var ak = 0,
++            bk = 0,
++            b = null,
++            points = geometry[i],
++            area = points.area,
++            dist = points.dist,
++            outer = points.outer,
++            len = points.length,
++            a, j, last;
+ 
+-  this.color = (options.color || [0,0,1,1]).slice()
+-  this.width = +(options.width || 1)
++        var slice = [];
+ 
+-  this.fill      = (options.fill || [false,false,false,false]).slice()
+-  this.fillColor = deepCopy(options.fillColor || [[0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1]])
++        for (j = 0; j < len - 1; j++) {
++            a = b || points[j];
++            b = points[j + 1];
++            ak = bk || a[axis];
++            bk = b[axis];
+ 
+-  var dashes = options.dashes || [1]
+-  var dashLength = 0
+-  for(var i=0; i<dashes.length; ++i) {
+-    dashLength += dashes[i]
+-  }
+-  var dashData = pool.mallocUint8(dashLength)
+-  var ptr = 0
+-  var fillColor = 255
+-  for(var i=0; i<dashes.length; ++i) {
+-    for(var j=0; j<dashes[i]; ++j) {
+-      dashData[ptr++] = fillColor
+-    }
+-    fillColor ^= 255
+-  }
+-  this.dashPattern.dispose()
+-  this.usingDashes = dashes.length > 1
++            if (ak < k1) {
+ 
+-  this.dashPattern = createTexture(gl,
+-    ndarray(dashData, [dashLength, 1, 4], [1, 0, 0]))
+-  this.dashPattern.minFilter = gl.NEAREST
+-  this.dashPattern.magFilter = gl.NEAREST
+-  this.dashLength = dashLength
+-  pool.free(dashData)
++                if ((bk > k2)) { // ---|-----|-->
++                    slice.push(intersect(a, b, k1), intersect(a, b, k2));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
+ 
+-  var data = options.positions
+-  this.data = data
++                } else if (bk >= k1) slice.push(intersect(a, b, k1)); // ---|-->  |
+ 
+-  var bounds = this.bounds
+-  bounds[0] = bounds[1] = Infinity
+-  bounds[2] = bounds[3] = -Infinity
++            } else if (ak > k2) {
+ 
+-  var numPoints = this.numPoints = data.length>>>1
+-  if(numPoints === 0) {
+-    return
+-  }
++                if ((bk < k1)) { // <--|-----|---
++                    slice.push(intersect(a, b, k2), intersect(a, b, k1));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
+ 
+-  for(var i=0; i<numPoints; ++i) {
+-    var ax = data[2*i]
+-    var ay = data[2*i+1]
++                } else if (bk <= k2) slice.push(intersect(a, b, k2)); // |  <--|---
+ 
+-    if (isNaN(ax) || isNaN(ay)) {
+-      continue
+-    }
++            } else {
+ 
+-    bounds[0] = Math.min(bounds[0], ax)
+-    bounds[1] = Math.min(bounds[1], ay)
+-    bounds[2] = Math.max(bounds[2], ax)
+-    bounds[3] = Math.max(bounds[3], ay)
+-  }
++                slice.push(a);
+ 
+-  if(bounds[0] === bounds[2]) {
+-    bounds[2] += 1
+-  }
+-  if(bounds[3] === bounds[1]) {
+-    bounds[3] += 1
+-  }
++                if (bk < k1) { // <--|---  |
++                    slice.push(intersect(a, b, k1));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
+ 
+-  //Generate line data
+-  var lineData    = pool.mallocFloat32(24*(numPoints-1))
+-  var pickData    = pool.mallocUint32(12*(numPoints-1))
+-  var lineDataPtr = lineData.length
+-  var pickDataPtr = pickData.length
+-  var ptr = numPoints
++                } else if (bk > k2) { // |  ---|-->
++                    slice.push(intersect(a, b, k2));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
++                }
++                // | --> |
++            }
++        }
+ 
+-  var count = 0
++        // add the last point
++        a = points[len - 1];
++        ak = a[axis];
++        if (ak >= k1 && ak <= k2) slice.push(a);
+ 
+-  while(ptr > 1) {
+-    var id = --ptr
+-    var ax = data[2*ptr]
+-    var ay = data[2*ptr+1]
++        // close the polygon if its endpoints are not the same after clipping
+ 
+-    var next = id-1
+-    var bx = data[2*next]
+-    var by = data[2*next+1]
++        last = slice[slice.length - 1];
++        if (closed && last && (slice[0][0] !== last[0] || slice[0][1] !== last[1])) slice.push(slice[0]);
+ 
+-    if (isNaN(ax) || isNaN(ay) || isNaN(bx) || isNaN(by)) {
+-      continue
++        // add the final slice
++        newSlice(slices, slice, area, dist, outer);
+     }
+ 
+-    count += 1
+-
+-    ax = (ax - bounds[0]) / (bounds[2] - bounds[0])
+-    ay = (ay - bounds[1]) / (bounds[3] - bounds[1])
++    return slices;
++}
+ 
+-    bx = (bx - bounds[0]) / (bounds[2] - bounds[0])
+-    by = (by - bounds[1]) / (bounds[3] - bounds[1])
++function newSlice(slices, slice, area, dist, outer) {
++    if (slice.length) {
++        // we don't recalculate the area/length of the unclipped geometry because the case where it goes
++        // below the visibility threshold as a result of clipping is rare, so we avoid doing unnecessary work
++        slice.area = area;
++        slice.dist = dist;
++        if (outer !== undefined) slice.outer = outer;
+ 
+-    var dx = bx - ax
+-    var dy = by - ay
++        slices.push(slice);
++    }
++    return [];
++}
+ 
+-    var akey0 = id     | (1<<24)
+-    var akey1 = (id-1)
+-    var bkey0 = id
+-    var bkey1 = (id-1) | (1<<24)
++},{"./feature":107}],106:[function(require,module,exports){
++'use strict';
+ 
+-    lineData[--lineDataPtr] = -dy
+-    lineData[--lineDataPtr] = -dx
+-    lineData[--lineDataPtr] = ay
+-    lineData[--lineDataPtr] = ax
+-    pickData[--pickDataPtr] = akey0
+-    pickData[--pickDataPtr] = akey1
++module.exports = convert;
+ 
+-    lineData[--lineDataPtr] = dy
+-    lineData[--lineDataPtr] = dx
+-    lineData[--lineDataPtr] = by
+-    lineData[--lineDataPtr] = bx
+-    pickData[--pickDataPtr] = bkey0
+-    pickData[--pickDataPtr] = bkey1
++var simplify = require('./simplify');
++var createFeature = require('./feature');
+ 
+-    lineData[--lineDataPtr] = -dy
+-    lineData[--lineDataPtr] = -dx
+-    lineData[--lineDataPtr] = by
+-    lineData[--lineDataPtr] = bx
+-    pickData[--pickDataPtr] = bkey0
+-    pickData[--pickDataPtr] = bkey1
++// converts GeoJSON feature into an intermediate projected JSON vector format with simplification data
+ 
+-    lineData[--lineDataPtr] = dy
+-    lineData[--lineDataPtr] = dx
+-    lineData[--lineDataPtr] = by
+-    lineData[--lineDataPtr] = bx
+-    pickData[--pickDataPtr] = bkey0
+-    pickData[--pickDataPtr] = bkey1
++function convert(data, tolerance) {
++    var features = [];
+ 
+-    lineData[--lineDataPtr] = -dy
+-    lineData[--lineDataPtr] = -dx
+-    lineData[--lineDataPtr] = ay
+-    lineData[--lineDataPtr] = ax
+-    pickData[--pickDataPtr] = akey0
+-    pickData[--pickDataPtr] = akey1
++    if (data.type === 'FeatureCollection') {
++        for (var i = 0; i < data.features.length; i++) {
++            convertFeature(features, data.features[i], tolerance);
++        }
++    } else if (data.type === 'Feature') {
++        convertFeature(features, data, tolerance);
+ 
+-    lineData[--lineDataPtr] = dy
+-    lineData[--lineDataPtr] = dx
+-    lineData[--lineDataPtr] = ay
+-    lineData[--lineDataPtr] = ax
+-    pickData[--pickDataPtr] = akey0
+-    pickData[--pickDataPtr] = akey1
+-  }
++    } else {
++        // single geometry or a geometry collection
++        convertFeature(features, {geometry: data}, tolerance);
++    }
++    return features;
++}
+ 
+-  this.vertCount = 6 * count
+-  this.lineBuffer.update(lineData.subarray(lineDataPtr))
+-  this.pickBuffer.update(pickData.subarray(pickDataPtr))
++function convertFeature(features, feature, tolerance) {
++    if (feature.geometry === null) {
++        // ignore features with null geometry
++        return;
++    }
+ 
+-  pool.free(lineData)
+-  pool.free(pickData)
+-}
++    var geom = feature.geometry,
++        type = geom.type,
++        coords = geom.coordinates,
++        tags = feature.properties,
++        id = feature.id,
++        i, j, rings, projectedRing;
+ 
+-proto.dispose = function() {
+-  this.plot.removeObject(this)
+-  this.lineBuffer.dispose()
+-  this.pickBuffer.dispose()
+-  this.lineShader.dispose()
+-  this.mitreShader.dispose()
+-  this.fillShader.dispose()
+-  this.pickShader.dispose()
+-  this.dashPattern.dispose()
+-}
++    if (type === 'Point') {
++        features.push(createFeature(tags, 1, [projectPoint(coords)], id));
+ 
+-function createLinePlot(plot, options) {
+-  var gl = plot.gl
+-  var lineBuffer  = createBuffer(gl)
+-  var pickBuffer  = createBuffer(gl)
+-  var dashPattern = createTexture(gl, [1,1])
+-  var lineShader  = createShader(gl, SHADERS.lineVertex,  SHADERS.lineFragment)
+-  var mitreShader = createShader(gl, SHADERS.mitreVertex, SHADERS.mitreFragment)
+-  var fillShader  = createShader(gl, SHADERS.fillVertex,  SHADERS.fillFragment)
+-  var pickShader  = createShader(gl, SHADERS.pickVertex,  SHADERS.pickFragment)
+-  var linePlot    = new GLLine2D(
+-    plot,
+-    dashPattern,
+-    lineBuffer,
+-    pickBuffer,
+-    lineShader,
+-    mitreShader,
+-    fillShader,
+-    pickShader)
+-  plot.addObject(linePlot)
+-  linePlot.update(options)
+-  return linePlot
+-}
++    } else if (type === 'MultiPoint') {
++        features.push(createFeature(tags, 1, project(coords), id));
+ 
+-},{"./lib/shaders":130,"gl-buffer":124,"gl-shader":203,"gl-texture2d":228,"ndarray":433,"typedarray-pool":458}],132:[function(require,module,exports){
++    } else if (type === 'LineString') {
++        features.push(createFeature(tags, 2, [project(coords, tolerance)], id));
+ 
+-var createShader  = require('gl-shader')
++    } else if (type === 'MultiLineString' || type === 'Polygon') {
++        rings = [];
++        for (i = 0; i < coords.length; i++) {
++            projectedRing = project(coords[i], tolerance);
++            if (type === 'Polygon') projectedRing.outer = (i === 0);
++            rings.push(projectedRing);
++        }
++        features.push(createFeature(tags, type === 'Polygon' ? 3 : 2, rings, id));
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, nextPosition;\nattribute float arcLength, lineWidth;\nattribute vec4 color;\n\nuniform vec2 screenShape;\nuniform float pixelRatio;\nuniform mat4 model, view, projection;\n\nvarying vec4 fragColor;\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\n\nvoid main() {\n  vec4 projected = projection * view * model * vec4(position, 1.0);\n  vec4 tangentClip = projection * view * model * vec4(nextPosition - position, 0.0);\n  vec2 tangent = normalize(screenShape * tangentClip.xy);\n  vec2 offset = 0.5 * pixelRatio * lineWidth * vec2(tangent.y, -tangent.x) / screenShape;\n\n  gl_Position = vec4(projected.xy + projected.w * offset, projected.zw);\n\n  worldPosition = position;\n  pixelArcLength = arcLength;\n  fragColor = color;\n}\n"
+-var forwardFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3      clipBounds[2];\nuniform sampler2D dashTexture;\nuniform float     dashScale;\nuniform float     opacity;\n\nvarying vec3    worldPosition;\nvarying float   pixelArcLength;\nvarying vec4    fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  float dashWeight = texture2D(dashTexture, vec2(dashScale * pixelArcLength, 0)).r;\n  if(dashWeight < 0.5) {\n    discard;\n  }\n  gl_FragColor = fragColor * opacity;\n}\n"
+-var pickFrag = "precision mediump float;\n#define GLSLIFY 1\n\n#define FLOAT_MAX  1.70141184e38\n#define FLOAT_MIN  1.17549435e-38\n\nlowp vec4 encode_float_1_0(highp float v) {\n  highp float av = abs(v);\n\n  //Handle special cases\n  if(av < FLOAT_MIN) {\n    return vec4(0.0, 0.0, 0.0, 0.0);\n  } else if(v > FLOAT_MAX) {\n    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;\n  } else if(v < -FLOAT_MAX) {\n    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;\n  }\n\n  highp vec4 c = vec4(0,0,0,0);\n\n  //Compute exponent and mantissa\n  highp float e = floor(log2(av));\n  highp float m = av * pow(2.0, -e) - 1.0;\n  \n  //Unpack mantissa\n  c[1] = floor(128.0 * m);\n  m -= c[1] / 128.0;\n  c[2] = floor(32768.0 * m);\n  m -= c[2] / 32768.0;\n  c[3] = floor(8388608.0 * m);\n  \n  //Unpack exponent\n  highp float ebias = e + 127.0;\n  c[0] = floor(ebias / 2.0);\n  ebias -= c[0] * 2.0;\n  c[1] += floor(ebias) * 128.0; \n\n  //Unpack sign bit\n  c[0] += 128.0 * step(0.0, -v);\n\n  //Scale back to range\n  return c / 255.0;\n}\n\n\n\nuniform float pickId;\nuniform vec3 clipBounds[2];\n\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId/255.0, encode_float_1_0(pixelArcLength).xyz);\n}"
++    } else if (type === 'MultiPolygon') {
++        rings = [];
++        for (i = 0; i < coords.length; i++) {
++            for (j = 0; j < coords[i].length; j++) {
++                projectedRing = project(coords[i][j], tolerance);
++                projectedRing.outer = (j === 0);
++                rings.push(projectedRing);
++            }
++        }
++        features.push(createFeature(tags, 3, rings, id));
+ 
+-var ATTRIBUTES = [
+-  {name: 'position', type: 'vec3'},
+-  {name: 'nextPosition', type: 'vec3'},
+-  {name: 'arcLength', type: 'float'},
+-  {name: 'lineWidth', type: 'float'},
+-  {name: 'color', type: 'vec4'}
+-]
++    } else if (type === 'GeometryCollection') {
++        for (i = 0; i < geom.geometries.length; i++) {
++            convertFeature(features, {
++                geometry: geom.geometries[i],
++                properties: tags
++            }, tolerance);
++        }
+ 
+-exports.createShader = function(gl) {
+-  return createShader(gl, vertSrc, forwardFrag, null, ATTRIBUTES)
++    } else {
++        throw new Error('Input data is not a valid GeoJSON object.');
++    }
+ }
+ 
+-exports.createPickShader = function(gl) {
+-  return createShader(gl, vertSrc, pickFrag, null, ATTRIBUTES)
++function project(lonlats, tolerance) {
++    var projected = [];
++    for (var i = 0; i < lonlats.length; i++) {
++        projected.push(projectPoint(lonlats[i]));
++    }
++    if (tolerance) {
++        simplify(projected, tolerance);
++        calcSize(projected);
++    }
++    return projected;
+ }
+ 
+-},{"gl-shader":203}],133:[function(require,module,exports){
+-'use strict'
++function projectPoint(p) {
++    var sin = Math.sin(p[1] * Math.PI / 180),
++        x = (p[0] / 360 + 0.5),
++        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
+ 
+-module.exports = createLinePlot
++    y = y < 0 ? 0 :
++        y > 1 ? 1 : y;
+ 
+-var createBuffer = require('gl-buffer')
+-var createVAO = require('gl-vao')
+-var createTexture = require('gl-texture2d')
+-var unpackFloat = require('glsl-read-float')
+-var bsearch = require('binary-search-bounds')
+-var ndarray = require('ndarray')
+-var shaders = require('./lib/shaders')
++    return [x, y, 0];
++}
+ 
+-var createShader = shaders.createShader
+-var createPickShader = shaders.createPickShader
++// calculate area and length of the poly
++function calcSize(points) {
++    var area = 0,
++        dist = 0;
+ 
+-var identity = [1, 0, 0, 0,
+-  0, 1, 0, 0,
+-  0, 0, 1, 0,
+-  0, 0, 0, 1]
++    for (var i = 0, a, b; i < points.length - 1; i++) {
++        a = b || points[i];
++        b = points[i + 1];
+ 
+-function distance (a, b) {
+-  var s = 0.0
+-  for (var i = 0; i < 3; ++i) {
+-    var d = a[i] - b[i]
+-    s += d * d
+-  }
+-  return Math.sqrt(s)
+-}
++        area += a[0] * b[1] - b[0] * a[1];
+ 
+-function filterClipBounds (bounds) {
+-  var result = [[-1e6, -1e6, -1e6], [1e6, 1e6, 1e6]]
+-  for (var i = 0; i < 3; ++i) {
+-    result[0][i] = Math.max(bounds[0][i], result[0][i])
+-    result[1][i] = Math.min(bounds[1][i], result[1][i])
+-  }
+-  return result
++        // use Manhattan distance instead of Euclidian one to avoid expensive square root computation
++        dist += Math.abs(b[0] - a[0]) + Math.abs(b[1] - a[1]);
++    }
++    points.area = Math.abs(area / 2);
++    points.dist = dist;
+ }
+ 
+-function PickResult (tau, position, index, dataCoordinate) {
+-  this.arcLength = tau
+-  this.position = position
+-  this.index = index
+-  this.dataCoordinate = dataCoordinate
+-}
++},{"./feature":107,"./simplify":109}],107:[function(require,module,exports){
++'use strict';
+ 
+-function LinePlot (gl, shader, pickShader, buffer, vao, texture) {
+-  this.gl = gl
+-  this.shader = shader
+-  this.pickShader = pickShader
+-  this.buffer = buffer
+-  this.vao = vao
+-  this.clipBounds = [
+-    [ -Infinity, -Infinity, -Infinity ],
+-    [ Infinity, Infinity, Infinity ]]
+-  this.points = []
+-  this.arcLength = []
+-  this.vertexCount = 0
+-  this.bounds = [[0, 0, 0], [0, 0, 0]]
+-  this.pickId = 0
+-  this.lineWidth = 1
+-  this.texture = texture
+-  this.dashScale = 1
+-  this.opacity = 1
+-  this.dirty = true
+-  this.pixelRatio = 1
++module.exports = createFeature;
++
++function createFeature(tags, type, geom, id) {
++    var feature = {
++        id: id || null,
++        type: type,
++        geometry: geom,
++        tags: tags || null,
++        min: [Infinity, Infinity], // initial bbox values
++        max: [-Infinity, -Infinity]
++    };
++    calcBBox(feature);
++    return feature;
+ }
+ 
+-var proto = LinePlot.prototype
++// calculate the feature bounding box for faster clipping later
++function calcBBox(feature) {
++    var geometry = feature.geometry,
++        min = feature.min,
++        max = feature.max;
+ 
+-proto.isTransparent = function () {
+-  return this.opacity < 1
++    if (feature.type === 1) {
++        calcRingBBox(min, max, geometry);
++    } else {
++        for (var i = 0; i < geometry.length; i++) {
++            calcRingBBox(min, max, geometry[i]);
++        }
++    }
++
++    return feature;
+ }
+ 
+-proto.isOpaque = function () {
+-  return this.opacity >= 1
++function calcRingBBox(min, max, points) {
++    for (var i = 0, p; i < points.length; i++) {
++        p = points[i];
++        min[0] = Math.min(p[0], min[0]);
++        max[0] = Math.max(p[0], max[0]);
++        min[1] = Math.min(p[1], min[1]);
++        max[1] = Math.max(p[1], max[1]);
++    }
+ }
+ 
+-proto.pickSlots = 1
++},{}],108:[function(require,module,exports){
++'use strict';
+ 
+-proto.setPickBase = function (id) {
+-  this.pickId = id
+-}
++module.exports = geojsonvt;
+ 
+-proto.drawTransparent = proto.draw = function (camera) {
+-  var gl = this.gl
+-  var shader = this.shader
+-  var vao = this.vao
+-  shader.bind()
+-  shader.uniforms = {
+-    model: camera.model || identity,
+-    view: camera.view || identity,
+-    projection: camera.projection || identity,
+-    clipBounds: filterClipBounds(this.clipBounds),
+-    dashTexture: this.texture.bind(),
+-    dashScale: this.dashScale / this.arcLength[this.arcLength.length - 1],
+-    opacity: this.opacity,
+-    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
+-    pixelRatio: this.pixelRatio
+-  }
+-  vao.bind()
+-  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
+-}
++var convert = require('./convert'),     // GeoJSON conversion and preprocessing
++    transform = require('./transform'), // coordinate transformation
++    clip = require('./clip'),           // stripe clipping algorithm
++    wrap = require('./wrap'),           // date line processing
++    createTile = require('./tile');     // final simplified tile generation
+ 
+-proto.drawPick = function (camera) {
+-  var gl = this.gl
+-  var shader = this.pickShader
+-  var vao = this.vao
+-  shader.bind()
+-  shader.uniforms = {
+-    model: camera.model || identity,
+-    view: camera.view || identity,
+-    projection: camera.projection || identity,
+-    pickId: this.pickId,
+-    clipBounds: filterClipBounds(this.clipBounds),
+-    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
+-    pixelRatio: this.pixelRatio
+-  }
+-  vao.bind()
+-  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
++
++function geojsonvt(data, options) {
++    return new GeoJSONVT(data, options);
+ }
+ 
+-proto.update = function (options) {
+-  var i, j
++function GeoJSONVT(data, options) {
++    options = this.options = extend(Object.create(this.options), options);
+ 
+-  this.dirty = true
++    var debug = options.debug;
+ 
+-  var connectGaps = !!options.connectGaps
++    if (debug) console.time('preprocess data');
+ 
+-  if ('dashScale' in options) {
+-    this.dashScale = options.dashScale
+-  }
+-  if ('opacity' in options) {
+-    this.opacity = +options.opacity
+-  }
++    var z2 = 1 << options.maxZoom, // 2^z
++        features = convert(data, options.tolerance / (z2 * options.extent));
+ 
+-  var positions = options.position || options.positions
+-  if (!positions) {
+-    return
+-  }
++    this.tiles = {};
++    this.tileCoords = [];
+ 
+-  // Default color
+-  var colors = options.color || options.colors || [0, 0, 0, 1]
++    if (debug) {
++        console.timeEnd('preprocess data');
++        console.log('index: maxZoom: %d, maxPoints: %d', options.indexMaxZoom, options.indexMaxPoints);
++        console.time('generate tiles');
++        this.stats = {};
++        this.total = 0;
++    }
+ 
+-  var lineWidth = options.lineWidth || 1
++    features = wrap(features, options.buffer / options.extent, intersectX);
+ 
+-  // Recalculate buffer data
+-  var buffer = []
+-  var arcLengthArray = []
+-  var pointArray = []
+-  var arcLength = 0.0
+-  var vertexCount = 0
+-  var bounds = [
+-    [ Infinity, Infinity, Infinity ],
+-    [ -Infinity, -Infinity, -Infinity ]]
+-  var hadGap = false
++    // start slicing from the top tile down
++    if (features.length) this.splitTile(features, 0, 0, 0);
+ 
+-  fill_loop:
+-  for (i = 1; i < positions.length; ++i) {
+-    var a = positions[i - 1]
+-    var b = positions[i]
++    if (debug) {
++        if (features.length) console.log('features: %d, points: %d', this.tiles[0].numFeatures, this.tiles[0].numPoints);
++        console.timeEnd('generate tiles');
++        console.log('tiles generated:', this.total, JSON.stringify(this.stats));
++    }
++}
+ 
+-    arcLengthArray.push(arcLength)
+-    pointArray.push(a.slice())
++GeoJSONVT.prototype.options = {
++    maxZoom: 14,            // max zoom to preserve detail on
++    indexMaxZoom: 5,        // max zoom in the tile index
++    indexMaxPoints: 100000, // max number of points per tile in the tile index
++    solidChildren: false,   // whether to tile solid square tiles further
++    tolerance: 3,           // simplification tolerance (higher means simpler)
++    extent: 4096,           // tile extent
++    buffer: 64,             // tile buffer on each side
++    debug: 0                // logging level (0, 1 or 2)
++};
+ 
+-    for (j = 0; j < 3; ++j) {
+-      if (isNaN(a[j]) || isNaN(b[j]) ||
+-        !isFinite(a[j]) || !isFinite(b[j])) {
++GeoJSONVT.prototype.splitTile = function (features, z, x, y, cz, cx, cy) {
+ 
+-        if (!connectGaps && buffer.length > 0) {
+-          for (var k = 0; k < 24; ++k) {
+-            buffer.push(buffer[buffer.length - 12])
+-          }
+-          vertexCount += 2
+-          hadGap = true
+-        }
++    var stack = [features, z, x, y],
++        options = this.options,
++        debug = options.debug,
++        solid = null;
+ 
+-        continue fill_loop
+-      }
+-      bounds[0][j] = Math.min(bounds[0][j], a[j], b[j])
+-      bounds[1][j] = Math.max(bounds[1][j], a[j], b[j])
+-    }
++    // avoid recursion by using a processing queue
++    while (stack.length) {
++        y = stack.pop();
++        x = stack.pop();
++        z = stack.pop();
++        features = stack.pop();
+ 
+-    var acolor, bcolor
+-    if (Array.isArray(colors[0])) {
+-      acolor = colors[i - 1]
+-      bcolor = colors[i]
+-    } else {
+-      acolor = bcolor = colors
+-    }
+-    if (acolor.length === 3) {
+-      acolor = [acolor[0], acolor[1], acolor[2], 1]
+-    }
+-    if (bcolor.length === 3) {
+-      bcolor = [bcolor[0], bcolor[1], bcolor[2], 1]
+-    }
++        var z2 = 1 << z,
++            id = toID(z, x, y),
++            tile = this.tiles[id],
++            tileTolerance = z === options.maxZoom ? 0 : options.tolerance / (z2 * options.extent);
+ 
+-    var w0
+-    if (Array.isArray(lineWidth)) {
+-      w0 = lineWidth[i - 1]
+-    } else {
+-      w0 = lineWidth
+-    }
++        if (!tile) {
++            if (debug > 1) console.time('creation');
+ 
+-    var t0 = arcLength
+-    arcLength += distance(a, b)
++            tile = this.tiles[id] = createTile(features, z2, x, y, tileTolerance, z === options.maxZoom);
++            this.tileCoords.push({z: z, x: x, y: y});
+ 
+-    if (hadGap) {
+-      for (j = 0; j < 2; ++j) {
+-        buffer.push(
+-          a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3])
+-      }
+-      vertexCount += 2
+-      hadGap = false
+-    }
++            if (debug) {
++                if (debug > 1) {
++                    console.log('tile z%d-%d-%d (features: %d, points: %d, simplified: %d)',
++                        z, x, y, tile.numFeatures, tile.numPoints, tile.numSimplified);
++                    console.timeEnd('creation');
++                }
++                var key = 'z' + z;
++                this.stats[key] = (this.stats[key] || 0) + 1;
++                this.total++;
++            }
++        }
+ 
+-    buffer.push(
+-      a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3],
+-      a[0], a[1], a[2], b[0], b[1], b[2], t0, -w0, acolor[0], acolor[1], acolor[2], acolor[3],
+-      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, -w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3],
+-      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3])
++        // save reference to original geometry in tile so that we can drill down later if we stop now
++        tile.source = features;
+ 
+-    vertexCount += 4
+-  }
+-  this.buffer.update(buffer)
++        // if it's the first-pass tiling
++        if (!cz) {
++            // stop tiling if we reached max zoom, or if the tile is too simple
++            if (z === options.indexMaxZoom || tile.numPoints <= options.indexMaxPoints) continue;
+ 
+-  arcLengthArray.push(arcLength)
+-  pointArray.push(positions[positions.length - 1].slice())
++        // if a drilldown to a specific tile
++        } else {
++            // stop tiling if we reached base zoom or our target tile zoom
++            if (z === options.maxZoom || z === cz) continue;
+ 
+-  this.bounds = bounds
++            // stop tiling if it's not an ancestor of the target tile
++            var m = 1 << (cz - z);
++            if (x !== Math.floor(cx / m) || y !== Math.floor(cy / m)) continue;
++        }
+ 
+-  this.vertexCount = vertexCount
++        // stop tiling if the tile is solid clipped square
++        if (!options.solidChildren && isClippedSquare(tile, options.extent, options.buffer)) {
++            if (cz) solid = z; // and remember the zoom if we're drilling down
++            continue;
++        }
+ 
+-  this.points = pointArray
+-  this.arcLength = arcLengthArray
++        // if we slice further down, no need to keep source geometry
++        tile.source = null;
+ 
+-  if ('dashes' in options) {
+-    var dashArray = options.dashes
++        if (debug > 1) console.time('clipping');
+ 
+-    // Calculate prefix sum
+-    var prefixSum = dashArray.slice()
+-    prefixSum.unshift(0)
+-    for (i = 1; i < prefixSum.length; ++i) {
+-      prefixSum[i] = prefixSum[i - 1] + prefixSum[i]
+-    }
++        // values we'll use for clipping
++        var k1 = 0.5 * options.buffer / options.extent,
++            k2 = 0.5 - k1,
++            k3 = 0.5 + k1,
++            k4 = 1 + k1,
++            tl, bl, tr, br, left, right;
+ 
+-    var dashTexture = ndarray(new Array(256 * 4), [256, 1, 4])
+-    for (i = 0; i < 256; ++i) {
+-      for (j = 0; j < 4; ++j) {
+-        dashTexture.set(i, 0, j, 0)
+-      }
+-      if (bsearch.le(prefixSum, prefixSum[prefixSum.length - 1] * i / 255.0) & 1) {
+-        dashTexture.set(i, 0, 0, 0)
+-      } else {
+-        dashTexture.set(i, 0, 0, 255)
+-      }
+-    }
++        tl = bl = tr = br = null;
+ 
+-    this.texture.setPixels(dashTexture)
+-  }
+-}
++        left  = clip(features, z2, x - k1, x + k3, 0, intersectX, tile.min[0], tile.max[0]);
++        right = clip(features, z2, x + k2, x + k4, 0, intersectX, tile.min[0], tile.max[0]);
+ 
+-proto.dispose = function () {
+-  this.shader.dispose()
+-  this.vao.dispose()
+-  this.buffer.dispose()
+-}
++        if (left) {
++            tl = clip(left, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
++            bl = clip(left, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
++        }
+ 
+-proto.pick = function (selection) {
+-  if (!selection) {
+-    return null
+-  }
+-  if (selection.id !== this.pickId) {
+-    return null
+-  }
+-  var tau = unpackFloat(
+-    selection.value[0],
+-    selection.value[1],
+-    selection.value[2],
+-    0)
+-  var index = bsearch.le(this.arcLength, tau)
+-  if (index < 0) {
+-    return null
+-  }
+-  if (index === this.arcLength.length - 1) {
+-    return new PickResult(
+-      this.arcLength[this.arcLength.length - 1],
+-      this.points[this.points.length - 1].slice(),
+-      index)
+-  }
+-  var a = this.points[index]
+-  var b = this.points[Math.min(index + 1, this.points.length - 1)]
+-  var t = (tau - this.arcLength[index]) / (this.arcLength[index + 1] - this.arcLength[index])
+-  var ti = 1.0 - t
+-  var x = [0, 0, 0]
+-  for (var i = 0; i < 3; ++i) {
+-    x[i] = ti * a[i] + t * b[i]
+-  }
+-  var dataIndex = Math.min((t < 0.5) ? index : (index + 1), this.points.length - 1)
+-  return new PickResult(
+-    tau,
+-    x,
+-    dataIndex,
+-    this.points[dataIndex])
+-}
++        if (right) {
++            tr = clip(right, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
++            br = clip(right, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
++        }
+ 
+-function createLinePlot (options) {
+-  var gl = options.gl || (options.scene && options.scene.gl)
++        if (debug > 1) console.timeEnd('clipping');
+ 
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.nextPosition.location = 1
+-  shader.attributes.arcLength.location = 2
+-  shader.attributes.lineWidth.location = 3
+-  shader.attributes.color.location = 4
++        if (features.length) {
++            stack.push(tl || [], z + 1, x * 2,     y * 2);
++            stack.push(bl || [], z + 1, x * 2,     y * 2 + 1);
++            stack.push(tr || [], z + 1, x * 2 + 1, y * 2);
++            stack.push(br || [], z + 1, x * 2 + 1, y * 2 + 1);
++        }
++    }
+ 
+-  var pickShader = createPickShader(gl)
+-  pickShader.attributes.position.location = 0
+-  pickShader.attributes.nextPosition.location = 1
+-  pickShader.attributes.arcLength.location = 2
+-  pickShader.attributes.lineWidth.location = 3
+-  pickShader.attributes.color.location = 4
++    return solid;
++};
+ 
+-  var buffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    {
+-      'buffer': buffer,
+-      'size': 3,
+-      'offset': 0,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 3,
+-      'offset': 12,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 1,
+-      'offset': 24,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 1,
+-      'offset': 28,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 4,
+-      'offset': 32,
+-      'stride': 48
+-    }
+-  ])
++GeoJSONVT.prototype.getTile = function (z, x, y) {
++    var options = this.options,
++        extent = options.extent,
++        debug = options.debug;
+ 
+-  // Create texture for dash pattern
+-  var defaultTexture = ndarray(new Array(256 * 4), [256, 1, 4])
+-  for (var i = 0; i < 256 * 4; ++i) {
+-    defaultTexture.data[i] = 255
+-  }
+-  var texture = createTexture(gl, defaultTexture)
+-  texture.wrap = gl.REPEAT
++    var z2 = 1 << z;
++    x = ((x % z2) + z2) % z2; // wrap tile x coordinate
+ 
+-  var linePlot = new LinePlot(gl, shader, pickShader, buffer, vao, texture)
+-  linePlot.update(options)
+-  return linePlot
+-}
++    var id = toID(z, x, y);
++    if (this.tiles[id]) return transform.tile(this.tiles[id], extent);
+ 
+-},{"./lib/shaders":132,"binary-search-bounds":134,"gl-buffer":124,"gl-texture2d":228,"gl-vao":232,"glsl-read-float":135,"ndarray":433}],134:[function(require,module,exports){
+-arguments[4][22][0].apply(exports,arguments)
+-},{"dup":22}],135:[function(require,module,exports){
+-module.exports = decodeFloat
++    if (debug > 1) console.log('drilling down to z%d-%d-%d', z, x, y);
+ 
+-var UINT8_VIEW = new Uint8Array(4)
+-var FLOAT_VIEW = new Float32Array(UINT8_VIEW.buffer)
++    var z0 = z,
++        x0 = x,
++        y0 = y,
++        parent;
+ 
+-function decodeFloat(x, y, z, w) {
+-  UINT8_VIEW[0] = w
+-  UINT8_VIEW[1] = z
+-  UINT8_VIEW[2] = y
+-  UINT8_VIEW[3] = x
+-  return FLOAT_VIEW[0]
+-}
++    while (!parent && z0 > 0) {
++        z0--;
++        x0 = Math.floor(x0 / 2);
++        y0 = Math.floor(y0 / 2);
++        parent = this.tiles[toID(z0, x0, y0)];
++    }
+ 
+-},{}],136:[function(require,module,exports){
+-module.exports = invert
++    if (!parent || !parent.source) return null;
+ 
+-/**
+- * Inverts a mat3
+- *
+- * @alias mat3.invert
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
+- */
+-function invert(out, a) {
+-  var a00 = a[0], a01 = a[1], a02 = a[2]
+-  var a10 = a[3], a11 = a[4], a12 = a[5]
+-  var a20 = a[6], a21 = a[7], a22 = a[8]
++    // if we found a parent tile containing the original geometry, we can drill down from it
++    if (debug > 1) console.log('found parent tile z%d-%d-%d', z0, x0, y0);
+ 
+-  var b01 = a22 * a11 - a12 * a21
+-  var b11 = -a22 * a10 + a12 * a20
+-  var b21 = a21 * a10 - a11 * a20
++    // it parent tile is a solid clipped square, return it instead since it's identical
++    if (isClippedSquare(parent, extent, options.buffer)) return transform.tile(parent, extent);
+ 
+-  // Calculate the determinant
+-  var det = a00 * b01 + a01 * b11 + a02 * b21
++    if (debug > 1) console.time('drilling down');
++    var solid = this.splitTile(parent.source, z0, x0, y0, z, x, y);
++    if (debug > 1) console.timeEnd('drilling down');
+ 
+-  if (!det) return null
+-  det = 1.0 / det
++    // one of the parent tiles was a solid clipped square
++    if (solid !== null) {
++        var m = 1 << (z - solid);
++        id = toID(solid, Math.floor(x / m), Math.floor(y / m));
++    }
+ 
+-  out[0] = b01 * det
+-  out[1] = (-a22 * a01 + a02 * a21) * det
+-  out[2] = (a12 * a01 - a02 * a11) * det
+-  out[3] = b11 * det
+-  out[4] = (a22 * a00 - a02 * a20) * det
+-  out[5] = (-a12 * a00 + a02 * a10) * det
+-  out[6] = b21 * det
+-  out[7] = (-a21 * a00 + a01 * a20) * det
+-  out[8] = (a11 * a00 - a01 * a10) * det
++    return this.tiles[id] ? transform.tile(this.tiles[id], extent) : null;
++};
+ 
+-  return out
++function toID(z, x, y) {
++    return (((1 << z) * y + x) * 32) + z;
+ }
+ 
+-},{}],137:[function(require,module,exports){
+-module.exports = clone;
+-
+-/**
+- * Creates a new mat4 initialized with values from an existing matrix
+- *
+- * @param {mat4} a matrix to clone
+- * @returns {mat4} a new 4x4 matrix
+- */
+-function clone(a) {
+-    var out = new Float32Array(16);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    out[9] = a[9];
+-    out[10] = a[10];
+-    out[11] = a[11];
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
+-},{}],138:[function(require,module,exports){
+-module.exports = create;
++function intersectX(a, b, x) {
++    return [x, (x - a[0]) * (b[1] - a[1]) / (b[0] - a[0]) + a[1], 1];
++}
++function intersectY(a, b, y) {
++    return [(y - a[1]) * (b[0] - a[0]) / (b[1] - a[1]) + a[0], y, 1];
++}
+ 
+-/**
+- * Creates a new identity mat4
+- *
+- * @returns {mat4} a new 4x4 matrix
+- */
+-function create() {
+-    var out = new Float32Array(16);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-};
+-},{}],139:[function(require,module,exports){
+-module.exports = determinant;
++function extend(dest, src) {
++    for (var i in src) dest[i] = src[i];
++    return dest;
++}
+ 
+-/**
+- * Calculates the determinant of a mat4
+- *
+- * @param {mat4} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-function determinant(a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++// checks whether a tile is a whole-area fill after clipping; if it is, there's no sense slicing it further
++function isClippedSquare(tile, extent, buffer) {
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32;
++    var features = tile.source;
++    if (features.length !== 1) return false;
+ 
+-    // Calculate the determinant
+-    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+-};
+-},{}],140:[function(require,module,exports){
+-module.exports = fromQuat;
++    var feature = features[0];
++    if (feature.type !== 3 || feature.geometry.length > 1) return false;
+ 
+-/**
+- * Creates a matrix from a quaternion rotation.
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @returns {mat4} out
+- */
+-function fromQuat(out, q) {
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++    var len = feature.geometry[0].length;
++    if (len !== 5) return false;
+ 
+-        xx = x * x2,
+-        yx = y * x2,
+-        yy = y * y2,
+-        zx = z * x2,
+-        zy = z * y2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++    for (var i = 0; i < len; i++) {
++        var p = transform.point(feature.geometry[0][i], extent, tile.z2, tile.x, tile.y);
++        if ((p[0] !== -buffer && p[0] !== extent + buffer) ||
++            (p[1] !== -buffer && p[1] !== extent + buffer)) return false;
++    }
+ 
+-    out[0] = 1 - yy - zz;
+-    out[1] = yx + wz;
+-    out[2] = zx - wy;
+-    out[3] = 0;
++    return true;
++}
+ 
+-    out[4] = yx - wz;
+-    out[5] = 1 - xx - zz;
+-    out[6] = zy + wx;
+-    out[7] = 0;
++},{"./clip":105,"./convert":106,"./tile":110,"./transform":111,"./wrap":112}],109:[function(require,module,exports){
++'use strict';
+ 
+-    out[8] = zx + wy;
+-    out[9] = zy - wx;
+-    out[10] = 1 - xx - yy;
+-    out[11] = 0;
++module.exports = simplify;
+ 
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
++// calculate simplification data using optimized Douglas-Peucker algorithm
+ 
+-    return out;
+-};
+-},{}],141:[function(require,module,exports){
+-module.exports = fromRotationTranslation;
++function simplify(points, tolerance) {
+ 
+-/**
+- * Creates a matrix from a quaternion rotation and vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @returns {mat4} out
+- */
+-function fromRotationTranslation(out, q, v) {
+-    // Quaternion math
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++    var sqTolerance = tolerance * tolerance,
++        len = points.length,
++        first = 0,
++        last = len - 1,
++        stack = [],
++        i, maxSqDist, sqDist, index;
+ 
+-        xx = x * x2,
+-        xy = x * y2,
+-        xz = x * z2,
+-        yy = y * y2,
+-        yz = y * z2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++    // always retain the endpoints (1 is the max value)
++    points[first][2] = 1;
++    points[last][2] = 1;
+ 
+-    out[0] = 1 - (yy + zz);
+-    out[1] = xy + wz;
+-    out[2] = xz - wy;
+-    out[3] = 0;
+-    out[4] = xy - wz;
+-    out[5] = 1 - (xx + zz);
+-    out[6] = yz + wx;
+-    out[7] = 0;
+-    out[8] = xz + wy;
+-    out[9] = yz - wx;
+-    out[10] = 1 - (xx + yy);
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
+-    
+-    return out;
+-};
+-},{}],142:[function(require,module,exports){
+-module.exports = identity;
++    // avoid recursion by using a stack
++    while (last) {
+ 
+-/**
+- * Set a mat4 to the identity matrix
+- *
+- * @param {mat4} out the receiving matrix
+- * @returns {mat4} out
+- */
+-function identity(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-};
+-},{}],143:[function(require,module,exports){
+-module.exports = invert;
++        maxSqDist = 0;
+ 
+-/**
+- * Inverts a mat4
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-function invert(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++        for (i = first + 1; i < last; i++) {
++            sqDist = getSqSegDist(points[i], points[first], points[last]);
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32,
++            if (sqDist > maxSqDist) {
++                index = i;
++                maxSqDist = sqDist;
++            }
++        }
+ 
+-        // Calculate the determinant
+-        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++        if (maxSqDist > sqTolerance) {
++            points[index][2] = maxSqDist; // save the point importance in squared pixels as a z coordinate
++            stack.push(first);
++            stack.push(index);
++            first = index;
+ 
+-    if (!det) { 
+-        return null; 
++        } else {
++            last = stack.pop();
++            first = stack.pop();
++        }
+     }
+-    det = 1.0 / det;
++}
+ 
+-    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+-    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+-    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+-    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
+-    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+-    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+-    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+-    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
+-    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+-    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+-    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+-    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
+-    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
+-    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
+-    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
+-    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
++// square distance from a point to a segment
++function getSqSegDist(p, a, b) {
+ 
+-    return out;
+-};
+-},{}],144:[function(require,module,exports){
+-var identity = require('./identity');
++    var x = a[0], y = a[1],
++        bx = b[0], by = b[1],
++        px = p[0], py = p[1],
++        dx = bx - x,
++        dy = by - y;
+ 
+-module.exports = lookAt;
++    if (dx !== 0 || dy !== 0) {
+ 
+-/**
+- * Generates a look-at matrix with the given eye position, focal point, and up axis
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {vec3} eye Position of the viewer
+- * @param {vec3} center Point the viewer is looking at
+- * @param {vec3} up vec3 pointing up
+- * @returns {mat4} out
+- */
+-function lookAt(out, eye, center, up) {
+-    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
+-        eyex = eye[0],
+-        eyey = eye[1],
+-        eyez = eye[2],
+-        upx = up[0],
+-        upy = up[1],
+-        upz = up[2],
+-        centerx = center[0],
+-        centery = center[1],
+-        centerz = center[2];
++        var t = ((px - x) * dx + (py - y) * dy) / (dx * dx + dy * dy);
+ 
+-    if (Math.abs(eyex - centerx) < 0.000001 &&
+-        Math.abs(eyey - centery) < 0.000001 &&
+-        Math.abs(eyez - centerz) < 0.000001) {
+-        return identity(out);
++        if (t > 1) {
++            x = bx;
++            y = by;
++
++        } else if (t > 0) {
++            x += dx * t;
++            y += dy * t;
++        }
+     }
+ 
+-    z0 = eyex - centerx;
+-    z1 = eyey - centery;
+-    z2 = eyez - centerz;
++    dx = px - x;
++    dy = py - y;
+ 
+-    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
+-    z0 *= len;
+-    z1 *= len;
+-    z2 *= len;
++    return dx * dx + dy * dy;
++}
+ 
+-    x0 = upy * z2 - upz * z1;
+-    x1 = upz * z0 - upx * z2;
+-    x2 = upx * z1 - upy * z0;
+-    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
+-    if (!len) {
+-        x0 = 0;
+-        x1 = 0;
+-        x2 = 0;
+-    } else {
+-        len = 1 / len;
+-        x0 *= len;
+-        x1 *= len;
+-        x2 *= len;
+-    }
++},{}],110:[function(require,module,exports){
++'use strict';
+ 
+-    y0 = z1 * x2 - z2 * x1;
+-    y1 = z2 * x0 - z0 * x2;
+-    y2 = z0 * x1 - z1 * x0;
++module.exports = createTile;
+ 
+-    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
+-    if (!len) {
+-        y0 = 0;
+-        y1 = 0;
+-        y2 = 0;
+-    } else {
+-        len = 1 / len;
+-        y0 *= len;
+-        y1 *= len;
+-        y2 *= len;
+-    }
++function createTile(features, z2, tx, ty, tolerance, noSimplify) {
++    var tile = {
++        features: [],
++        numPoints: 0,
++        numSimplified: 0,
++        numFeatures: 0,
++        source: null,
++        x: tx,
++        y: ty,
++        z2: z2,
++        transformed: false,
++        min: [2, 1],
++        max: [-1, 0]
++    };
++    for (var i = 0; i < features.length; i++) {
++        tile.numFeatures++;
++        addFeature(tile, features[i], tolerance, noSimplify);
+ 
+-    out[0] = x0;
+-    out[1] = y0;
+-    out[2] = z0;
+-    out[3] = 0;
+-    out[4] = x1;
+-    out[5] = y1;
+-    out[6] = z1;
+-    out[7] = 0;
+-    out[8] = x2;
+-    out[9] = y2;
+-    out[10] = z2;
+-    out[11] = 0;
+-    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
+-    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
+-    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
+-    out[15] = 1;
++        var min = features[i].min,
++            max = features[i].max;
+ 
+-    return out;
+-};
+-},{"./identity":142}],145:[function(require,module,exports){
+-module.exports = multiply;
++        if (min[0] < tile.min[0]) tile.min[0] = min[0];
++        if (min[1] < tile.min[1]) tile.min[1] = min[1];
++        if (max[0] > tile.max[0]) tile.max[0] = max[0];
++        if (max[1] > tile.max[1]) tile.max[1] = max[1];
++    }
++    return tile;
++}
+ 
+-/**
+- * Multiplies two mat4's
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-function multiply(out, a, b) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
++function addFeature(tile, feature, tolerance, noSimplify) {
+ 
+-    // Cache only the current line of the second matrix
+-    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];  
+-    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    var geom = feature.geometry,
++        type = feature.type,
++        simplified = [],
++        sqTolerance = tolerance * tolerance,
++        i, j, ring, p;
+ 
+-    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
+-    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    if (type === 1) {
++        for (i = 0; i < geom.length; i++) {
++            simplified.push(geom[i]);
++            tile.numPoints++;
++            tile.numSimplified++;
++        }
+ 
+-    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
+-    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    } else {
+ 
+-    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
+-    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+-    return out;
+-};
+-},{}],146:[function(require,module,exports){
+-module.exports = perspective;
++        // simplify and transform projected coordinates for tile geometry
++        for (i = 0; i < geom.length; i++) {
++            ring = geom[i];
+ 
+-/**
+- * Generates a perspective projection matrix with the given bounds
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {number} fovy Vertical field of view in radians
+- * @param {number} aspect Aspect ratio. typically viewport width/height
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-function perspective(out, fovy, aspect, near, far) {
+-    var f = 1.0 / Math.tan(fovy / 2),
+-        nf = 1 / (near - far);
+-    out[0] = f / aspect;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = f;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = (far + near) * nf;
+-    out[11] = -1;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = (2 * far * near) * nf;
+-    out[15] = 0;
+-    return out;
+-};
+-},{}],147:[function(require,module,exports){
+-module.exports = rotate;
++            // filter out tiny polylines & polygons
++            if (!noSimplify && ((type === 2 && ring.dist < tolerance) ||
++                                (type === 3 && ring.area < sqTolerance))) {
++                tile.numPoints += ring.length;
++                continue;
++            }
+ 
+-/**
+- * Rotates a mat4 by the given angle
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @param {vec3} axis the axis to rotate around
+- * @returns {mat4} out
+- */
+-function rotate(out, a, rad, axis) {
+-    var x = axis[0], y = axis[1], z = axis[2],
+-        len = Math.sqrt(x * x + y * y + z * z),
+-        s, c, t,
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23,
+-        b00, b01, b02,
+-        b10, b11, b12,
+-        b20, b21, b22;
++            var simplifiedRing = [];
+ 
+-    if (Math.abs(len) < 0.000001) { return null; }
+-    
+-    len = 1 / len;
+-    x *= len;
+-    y *= len;
+-    z *= len;
++            for (j = 0; j < ring.length; j++) {
++                p = ring[j];
++                // keep points with importance > tolerance
++                if (noSimplify || p[2] > sqTolerance) {
++                    simplifiedRing.push(p);
++                    tile.numSimplified++;
++                }
++                tile.numPoints++;
++            }
+ 
+-    s = Math.sin(rad);
+-    c = Math.cos(rad);
+-    t = 1 - c;
++            if (type === 3) rewind(simplifiedRing, ring.outer);
+ 
+-    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++            simplified.push(simplifiedRing);
++        }
++    }
+ 
+-    // Construct the elements of the rotation matrix
+-    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
+-    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
+-    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
++    if (simplified.length) {
++        var tileFeature = {
++            geometry: simplified,
++            type: type,
++            tags: feature.tags || null
++        };
++        if (feature.id !== null) {
++            tileFeature.id = feature.id;
++        }
++        tile.features.push(tileFeature);
++    }
++}
+ 
+-    // Perform rotation-specific matrix multiplication
+-    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
+-    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
+-    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
+-    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
+-    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
+-    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
+-    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
+-    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
+-    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
+-    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
+-    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
+-    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
++function rewind(ring, clockwise) {
++    var area = signedArea(ring);
++    if (area < 0 === clockwise) ring.reverse();
++}
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
++function signedArea(ring) {
++    var sum = 0;
++    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
++        p1 = ring[i];
++        p2 = ring[j];
++        sum += (p2[0] - p1[0]) * (p1[1] + p2[1]);
+     }
+-    return out;
+-};
+-},{}],148:[function(require,module,exports){
+-module.exports = rotateX;
++    return sum;
++}
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-function rotateX(out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++},{}],111:[function(require,module,exports){
++'use strict';
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[0]  = a[0];
+-        out[1]  = a[1];
+-        out[2]  = a[2];
+-        out[3]  = a[3];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++exports.tile = transformTile;
++exports.point = transformPoint;
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[4] = a10 * c + a20 * s;
+-    out[5] = a11 * c + a21 * s;
+-    out[6] = a12 * c + a22 * s;
+-    out[7] = a13 * c + a23 * s;
+-    out[8] = a20 * c - a10 * s;
+-    out[9] = a21 * c - a11 * s;
+-    out[10] = a22 * c - a12 * s;
+-    out[11] = a23 * c - a13 * s;
+-    return out;
+-};
+-},{}],149:[function(require,module,exports){
+-module.exports = rotateY;
++// Transforms the coordinates of each feature in the given tile from
++// mercator-projected space into (extent x extent) tile space.
++function transformTile(tile, extent) {
++    if (tile.transformed) return tile;
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-function rotateY(out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++    var z2 = tile.z2,
++        tx = tile.x,
++        ty = tile.y,
++        i, j, k;
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[4]  = a[4];
+-        out[5]  = a[5];
+-        out[6]  = a[6];
+-        out[7]  = a[7];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
++    for (i = 0; i < tile.features.length; i++) {
++        var feature = tile.features[i],
++            geom = feature.geometry,
++            type = feature.type;
++
++        if (type === 1) {
++            for (j = 0; j < geom.length; j++) geom[j] = transformPoint(geom[j], extent, z2, tx, ty);
++
++        } else {
++            for (j = 0; j < geom.length; j++) {
++                var ring = geom[j];
++                for (k = 0; k < ring.length; k++) ring[k] = transformPoint(ring[k], extent, z2, tx, ty);
++            }
++        }
+     }
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c - a20 * s;
+-    out[1] = a01 * c - a21 * s;
+-    out[2] = a02 * c - a22 * s;
+-    out[3] = a03 * c - a23 * s;
+-    out[8] = a00 * s + a20 * c;
+-    out[9] = a01 * s + a21 * c;
+-    out[10] = a02 * s + a22 * c;
+-    out[11] = a03 * s + a23 * c;
+-    return out;
+-};
+-},{}],150:[function(require,module,exports){
+-module.exports = rotateZ;
++    tile.transformed = true;
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-function rotateZ(out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7];
++    return tile;
++}
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[8]  = a[8];
+-        out[9]  = a[9];
+-        out[10] = a[10];
+-        out[11] = a[11];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++function transformPoint(p, extent, z2, tx, ty) {
++    var x = Math.round(extent * (p[0] * z2 - tx)),
++        y = Math.round(extent * (p[1] * z2 - ty));
++    return [x, y];
++}
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c + a10 * s;
+-    out[1] = a01 * c + a11 * s;
+-    out[2] = a02 * c + a12 * s;
+-    out[3] = a03 * c + a13 * s;
+-    out[4] = a10 * c - a00 * s;
+-    out[5] = a11 * c - a01 * s;
+-    out[6] = a12 * c - a02 * s;
+-    out[7] = a13 * c - a03 * s;
+-    return out;
+-};
+-},{}],151:[function(require,module,exports){
+-module.exports = scale;
++},{}],112:[function(require,module,exports){
++'use strict';
++
++var clip = require('./clip');
++var createFeature = require('./feature');
++
++module.exports = wrap;
++
++function wrap(features, buffer, intersectX) {
++    var merged = features,
++        left  = clip(features, 1, -1 - buffer, buffer,     0, intersectX, -1, 2), // left world copy
++        right = clip(features, 1,  1 - buffer, 2 + buffer, 0, intersectX, -1, 2); // right world copy
+ 
+-/**
+- * Scales the mat4 by the dimensions in the given vec3
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- **/
+-function scale(out, a, v) {
+-    var x = v[0], y = v[1], z = v[2];
++    if (left || right) {
++        merged = clip(features, 1, -buffer, 1 + buffer, 0, intersectX, -1, 2) || []; // center world copy
+ 
+-    out[0] = a[0] * x;
+-    out[1] = a[1] * x;
+-    out[2] = a[2] * x;
+-    out[3] = a[3] * x;
+-    out[4] = a[4] * y;
+-    out[5] = a[5] * y;
+-    out[6] = a[6] * y;
+-    out[7] = a[7] * y;
+-    out[8] = a[8] * z;
+-    out[9] = a[9] * z;
+-    out[10] = a[10] * z;
+-    out[11] = a[11] * z;
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
+-},{}],152:[function(require,module,exports){
+-module.exports = translate;
++        if (left) merged = shiftFeatureCoords(left, 1).concat(merged); // merge left into center
++        if (right) merged = merged.concat(shiftFeatureCoords(right, -1)); // merge right into center
++    }
+ 
+-/**
+- * Translate a mat4 by the given vector
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
+- */
+-function translate(out, a, v) {
+-    var x = v[0], y = v[1], z = v[2],
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23;
++    return merged;
++}
+ 
+-    if (a === out) {
+-        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
+-        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
+-        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
+-        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
+-    } else {
+-        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++function shiftFeatureCoords(features, offset) {
++    var newFeatures = [];
+ 
+-        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
+-        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
+-        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
++    for (var i = 0; i < features.length; i++) {
++        var feature = features[i],
++            type = feature.type;
+ 
+-        out[12] = a00 * x + a10 * y + a20 * z + a[12];
+-        out[13] = a01 * x + a11 * y + a21 * z + a[13];
+-        out[14] = a02 * x + a12 * y + a22 * z + a[14];
+-        out[15] = a03 * x + a13 * y + a23 * z + a[15];
++        var newGeometry;
++
++        if (type === 1) {
++            newGeometry = shiftCoords(feature.geometry, offset);
++        } else {
++            newGeometry = [];
++            for (var j = 0; j < feature.geometry.length; j++) {
++                newGeometry.push(shiftCoords(feature.geometry[j], offset));
++            }
++        }
++
++        newFeatures.push(createFeature(feature.tags, type, newGeometry, feature.id));
+     }
+ 
+-    return out;
+-};
+-},{}],153:[function(require,module,exports){
+-module.exports = transpose;
++    return newFeatures;
++}
+ 
+-/**
+- * Transpose the values of a mat4
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-function transpose(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a01 = a[1], a02 = a[2], a03 = a[3],
+-            a12 = a[6], a13 = a[7],
+-            a23 = a[11];
++function shiftCoords(points, offset) {
++    var newPoints = [];
++    newPoints.area = points.area;
++    newPoints.dist = points.dist;
+ 
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a01;
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a02;
+-        out[9] = a12;
+-        out[11] = a[14];
+-        out[12] = a03;
+-        out[13] = a13;
+-        out[14] = a23;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a[1];
+-        out[5] = a[5];
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a[2];
+-        out[9] = a[6];
+-        out[10] = a[10];
+-        out[11] = a[14];
+-        out[12] = a[3];
+-        out[13] = a[7];
+-        out[14] = a[11];
+-        out[15] = a[15];
++    for (var i = 0; i < points.length; i++) {
++        newPoints.push([points[i][0] + offset, points[i][1], points[i][2]]);
+     }
+-    
+-    return out;
+-};
+-},{}],154:[function(require,module,exports){
++    return newPoints;
++}
++
++},{"./clip":105,"./feature":107}],113:[function(require,module,exports){
+ 'use strict'
+ 
+-var barycentric            = require('barycentric')
+-var closestPointToTriangle = require('polytope-closest-point/lib/closest_point_2d.js')
++module.exports = createAxes
+ 
+-module.exports = closestPointToPickLocation
++var createText        = require('./lib/text.js')
++var createLines       = require('./lib/lines.js')
++var createBackground  = require('./lib/background.js')
++var getCubeProperties = require('./lib/cube.js')
++var Ticks             = require('./lib/ticks.js')
+ 
+-function xformMatrix(m, v) {
+-  var out = [0,0,0,0]
+-  for(var i=0; i<4; ++i) {
+-    for(var j=0; j<4; ++j) {
+-      out[j] += m[4*i + j] * v[i]
+-    }
+-  }
+-  return out
++var identity = new Float32Array([
++  1, 0, 0, 0,
++  0, 1, 0, 0,
++  0, 0, 1, 0,
++  0, 0, 0, 1])
++
++function copyVec3(a, b) {
++  a[0] = b[0]
++  a[1] = b[1]
++  a[2] = b[2]
++  return a
+ }
+ 
+-function projectVertex(v, model, view, projection, resolution) {
+-  var p = xformMatrix(projection,
+-            xformMatrix(view,
+-              xformMatrix(model, [v[0], v[1], v[2], 1])))
+-  for(var i=0; i<3; ++i) {
+-    p[i] /= p[3]
++function Axes(gl) {
++  this.gl             = gl
++
++  this.pixelRatio     = 1
++
++  this.bounds         = [ [-10, -10, -10],
++                          [ 10,  10,  10] ]
++  this.ticks          = [ [], [], [] ]
++  this.autoTicks      = true
++  this.tickSpacing    = [ 1, 1, 1 ]
++
++  this.tickEnable     = [ true, true, true ]
++  this.tickFont       = [ 'sans-serif', 'sans-serif', 'sans-serif' ]
++  this.tickSize       = [ 12, 12, 12 ]
++  this.tickAngle      = [ 0, 0, 0 ]
++  this.tickColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++  this.tickPad        = [ 10, 10, 10 ]
++
++  this.lastCubeProps  = {
++    cubeEdges: [0,0,0],
++    axis:      [0,0,0]
+   }
+-  return [ 0.5 * resolution[0] * (1.0+p[0]), 0.5 * resolution[1] * (1.0-p[1]) ]
++
++  this.labels         = [ 'x', 'y', 'z' ]
++  this.labelEnable    = [ true, true, true ]
++  this.labelFont      = 'sans-serif'
++  this.labelSize      = [ 20, 20, 20 ]
++  this.labelAngle     = [ 0, 0, 0 ]
++  this.labelColor     = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++  this.labelPad       = [ 10, 10, 10 ]
++
++  this.lineEnable     = [ true, true, true ]
++  this.lineMirror     = [ false, false, false ]
++  this.lineWidth      = [ 1, 1, 1 ]
++  this.lineColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++
++  this.lineTickEnable = [ true, true, true ]
++  this.lineTickMirror = [ false, false, false ]
++  this.lineTickLength = [ 0, 0, 0 ]
++  this.lineTickWidth  = [ 1, 1, 1 ]
++  this.lineTickColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++
++  this.gridEnable     = [ true, true, true ]
++  this.gridWidth      = [ 1, 1, 1 ]
++  this.gridColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++
++  this.zeroEnable     = [ true, true, true ]
++  this.zeroLineColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++  this.zeroLineWidth  = [ 2, 2, 2 ]
++
++  this.backgroundEnable = [ false, false, false ]
++  this.backgroundColor  = [ [0.8, 0.8, 0.8, 0.5],
++                            [0.8, 0.8, 0.8, 0.5],
++                            [0.8, 0.8, 0.8, 0.5] ]
++
++  this._firstInit = true
++  this._text  = null
++  this._lines = null
++  this._background = createBackground(gl)
+ }
+ 
+-function barycentricCoord(simplex, point) {
+-  if(simplex.length === 2) {
+-    var d0 = 0.0
+-    var d1 = 0.0
++var proto = Axes.prototype
++
++proto.update = function(options) {
++  options = options || {}
++
++  //Option parsing helper functions
++  function parseOption(nest, cons, name) {
++    if(name in options) {
++      var opt = options[name]
++      var prev = this[name]
++      var next
++      if(nest ? (Array.isArray(opt) && Array.isArray(opt[0])) :
++                 Array.isArray(opt) ) {
++        this[name] = next = [ cons(opt[0]), cons(opt[1]), cons(opt[2]) ]
++      } else {
++        this[name] = next = [ cons(opt), cons(opt), cons(opt) ]
++      }
++      for(var i=0; i<3; ++i) {
++        if(next[i] !== prev[i]) {
++          return true
++        }
++      }
++    }
++    return false
++  }
++
++  var NUMBER  = parseOption.bind(this, false, Number)
++  var BOOLEAN = parseOption.bind(this, false, Boolean)
++  var STRING  = parseOption.bind(this, false, String)
++  var COLOR   = parseOption.bind(this, true, function(v) {
++    if(Array.isArray(v)) {
++      if(v.length === 3) {
++        return [ +v[0], +v[1], +v[2], 1.0 ]
++      } else if(v.length === 4) {
++        return [ +v[0], +v[1], +v[2], +v[3] ]
++      }
++    }
++    return [ 0, 0, 0, 1 ]
++  })
++
++  //Tick marks and bounds
++  var nextTicks
++  var ticksUpdate   = false
++  var boundsChanged = false
++  if('bounds' in options) {
++    var bounds = options.bounds
++i_loop:
+     for(var i=0; i<2; ++i) {
+-      d0 += Math.pow(point[i] - simplex[0][i], 2)
+-      d1 += Math.pow(point[i] - simplex[1][i], 2)
++      for(var j=0; j<3; ++j) {
++        if(bounds[i][j] !== this.bounds[i][j]) {
++          boundsChanged = true
++        }
++        this.bounds[i][j] = bounds[i][j]
++      }
+     }
+-    d0 = Math.sqrt(d0)
+-    d1 = Math.sqrt(d1)
+-    if(d0+d1 < 1e-6) {
+-      return [1,0]
++  }
++  if('ticks' in options) {
++    nextTicks      = options.ticks
++    ticksUpdate    = true
++    this.autoTicks = false
++    for(var i=0; i<3; ++i) {
++      this.tickSpacing[i] = 0.0
+     }
+-    return [d1/(d0+d1),d0/(d1+d0)]
+-  } else if(simplex.length === 3) {
+-    var closestPoint = [0,0]
+-    closestPointToTriangle(simplex[0], simplex[1], simplex[2], point, closestPoint)
+-    return barycentric(simplex, closestPoint)
++  } else if(NUMBER('tickSpacing')) {
++    this.autoTicks  = true
++    boundsChanged   = true
+   }
+-  return []
+-}
+ 
+-function interpolate(simplex, weights) {
+-  var result = [0,0,0]
+-  for(var i=0; i<simplex.length; ++i) {
+-    var p = simplex[i]
+-    var w = weights[i]
+-    for(var j=0; j<3; ++j) {
+-      result[j] += w * p[j]
++  if(this._firstInit) {
++    if(!('ticks' in options || 'tickSpacing' in options)) {
++      this.autoTicks = true
+     }
+-  }
+-  return result
+-}
+ 
+-function closestPointToPickLocation(simplex, pixelCoord, model, view, projection, resolution) {
+-  if(simplex.length === 1) {
+-    return [0, simplex[0].slice()]
++    //Force tick recomputation on first update
++    boundsChanged   = true
++    ticksUpdate     = true
++    this._firstInit = false
+   }
+-  var simplex2D = new Array(simplex.length)
+-  for(var i=0; i<simplex.length; ++i) {
+-    simplex2D[i] = projectVertex(simplex[i], model, view, projection, resolution);
++
++  if(boundsChanged && this.autoTicks) {
++    nextTicks = Ticks.create(this.bounds, this.tickSpacing)
++    ticksUpdate = true
+   }
+ 
+-  var closestIndex = 0
+-  var closestDist  = Infinity
+-  for(var i=0; i<simplex2D.length; ++i) {
+-    var d2 = 0.0
+-    for(var j=0; j<2; ++j) {
+-      d2 += Math.pow(simplex2D[i][j] - pixelCoord[j], 2)
++  //Compare next ticks to previous ticks, only update if needed
++  if(ticksUpdate) {
++    for(var i=0; i<3; ++i) {
++      nextTicks[i].sort(function(a,b) {
++        return a.x-b.x
++      })
+     }
+-    if(d2 < closestDist) {
+-      closestDist  = d2
+-      closestIndex = i
++    if(Ticks.equal(nextTicks, this.ticks)) {
++      ticksUpdate = false
++    } else {
++      this.ticks = nextTicks
+     }
+   }
+ 
+-  var weights = barycentricCoord(simplex2D, pixelCoord)
+-  var s = 0.0
+-  for(var i=0; i<3; ++i) {
+-    if(weights[i] < -0.001 ||
+-       weights[i] > 1.0001) {
+-      return null
+-    }
+-    s += weights[i]
++  //Parse tick properties
++  BOOLEAN('tickEnable')
++  if(STRING('tickFont')) {
++    ticksUpdate = true  //If font changes, must rebuild vbo
+   }
+-  if(Math.abs(s - 1.0) > 0.001) {
+-    return null
++  NUMBER('tickSize')
++  NUMBER('tickAngle')
++  NUMBER('tickPad')
++  COLOR('tickColor')
++
++  //Axis labels
++  var labelUpdate = STRING('labels')
++  if(STRING('labelFont')) {
++    labelUpdate = true
+   }
+-  return [closestIndex, interpolate(simplex, weights), weights]
+-}
+-},{"barycentric":157,"polytope-closest-point/lib/closest_point_2d.js":159}],155:[function(require,module,exports){
++  BOOLEAN('labelEnable')
++  NUMBER('labelSize')
++  NUMBER('labelPad')
++  COLOR('labelColor')
+ 
++  //Axis lines
++  BOOLEAN('lineEnable')
++  BOOLEAN('lineMirror')
++  NUMBER('lineWidth')
++  COLOR('lineColor')
+ 
+-var triVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, normal;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model\n           , view\n           , projection;\nuniform vec3 eyePosition\n           , lightPosition;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec4 m_position  = model * vec4(position, 1.0);\n  vec4 t_position  = view * m_position;\n  gl_Position      = projection * t_position;\n  f_color          = color;\n  f_normal         = normal;\n  f_data           = position;\n  f_eyeDirection   = eyePosition   - position;\n  f_lightDirection = lightPosition - position;\n  f_uv             = uv;\n}"
+-var triFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat cookTorranceSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness,\n  float fresnel) {\n\n  float VdotN = max(dot(viewDirection, surfaceNormal), 0.0);\n  float LdotN = max(dot(lightDirection, surfaceNormal), 0.0);\n\n  //Half angle vector\n  vec3 H = normalize(lightDirection + viewDirection);\n\n  //Geometric term\n  float NdotH = max(dot(surfaceNormal, H), 0.0);\n  float VdotH = max(dot(viewDirection, H), 0.000001);\n  float LdotH = max(dot(lightDirection, H), 0.000001);\n  float G1 = (2.0 * NdotH * VdotN) / VdotH;\n  float G2 = (2.0 * NdotH * LdotN) / LdotH;\n  float G = min(1.0, min(G1, G2));\n  \n  //Distribution term\n  float D = beckmannDistribution_2_0(NdotH, roughness);\n\n  //Fresnel term\n  float F = pow(1.0 - VdotN, fresnel);\n\n  //Multiply terms and done\n  return  G * F * D / max(3.14159265 * VdotN, 0.000001);\n}\n\n\n\nuniform vec3 clipBounds[2];\nuniform float roughness\n            , fresnel\n            , kambient\n            , kdiffuse\n            , kspecular\n            , opacity;\nuniform sampler2D texture;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(f_normal);\n  vec3 L = normalize(f_lightDirection);\n  vec3 V = normalize(f_eyeDirection);\n  \n  if(!gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = cookTorranceSpecular_1_1(L, V, N, roughness, fresnel);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = f_color * texture2D(texture, f_uv);\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = litColor * opacity;\n}"
+-var edgeVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model, view, projection;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_color = color;\n  f_data  = position;\n  f_uv    = uv;\n}"
+-var edgeFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 clipBounds[2];\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
+-var pointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\nattribute float pointSize;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position = projection * view * model * vec4(position, 1.0);\n  }\n  gl_PointSize = pointSize;\n  f_color = color;\n  f_uv = uv;\n}"
+-var pointFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec2 pointR = gl_PointCoord.xy - vec2(0.5,0.5);\n  if(dot(pointR, pointR) > 0.25) {\n    discard;\n  }\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
+-var pickVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_id        = id;\n  f_position  = position;\n}"
+-var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3  clipBounds[2];\nuniform float pickId;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(f_position, clipBounds[0])) || \n     any(greaterThan(f_position, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId, f_id.xyz);\n}"
+-var pickPointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3  position;\nattribute float pointSize;\nattribute vec4  id;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position  = projection * view * model * vec4(position, 1.0);\n    gl_PointSize = pointSize;\n  }\n  f_id         = id;\n  f_position   = position;\n}"
+-var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n}"
+-var contourFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 contourColor;\n\nvoid main() {\n  gl_FragColor = vec4(contourColor,1);\n}\n"
++  //Axis line ticks
++  BOOLEAN('lineTickEnable')
++  BOOLEAN('lineTickMirror')
++  NUMBER('lineTickLength')
++  NUMBER('lineTickWidth')
++  COLOR('lineTickColor')
+ 
+-exports.meshShader = {
+-  vertex:   triVertSrc,
+-  fragment: triFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'},
+-    {name: 'color', type: 'vec4'},
+-    {name: 'uv', type: 'vec2'}
+-  ]
+-}
+-exports.wireShader = {
+-  vertex:   edgeVertSrc,
+-  fragment: edgeFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'color', type: 'vec4'},
+-    {name: 'uv', type: 'vec2'}
+-  ]
+-}
+-exports.pointShader = {
+-  vertex:   pointVertSrc,
+-  fragment: pointFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'color', type: 'vec4'},
+-    {name: 'uv', type: 'vec2'},
+-    {name: 'pointSize', type: 'float'}
+-  ]
++  //Grid lines
++  BOOLEAN('gridEnable')
++  NUMBER('gridWidth')
++  COLOR('gridColor')
++
++  //Zero line
++  BOOLEAN('zeroEnable')
++  COLOR('zeroLineColor')
++  NUMBER('zeroLineWidth')
++
++  //Background
++  BOOLEAN('backgroundEnable')
++  COLOR('backgroundColor')
++
++  //Update text if necessary
++  if(!this._text) {
++    this._text = createText(
++      this.gl,
++      this.bounds,
++      this.labels,
++      this.labelFont,
++      this.ticks,
++      this.tickFont)
++  } else if(this._text && (labelUpdate || ticksUpdate)) {
++    this._text.update(
++      this.bounds,
++      this.labels,
++      this.labelFont,
++      this.ticks,
++      this.tickFont)
++  }
++
++  //Update lines if necessary
++  if(this._lines && ticksUpdate) {
++    this._lines.dispose()
++    this._lines = null
++  }
++  if(!this._lines) {
++    this._lines = createLines(this.gl, this.bounds, this.ticks)
++  }
+ }
+-exports.pickShader = {
+-  vertex:   pickVertSrc,
+-  fragment: pickFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'id', type: 'vec4'}
+-  ]
++
++function OffsetInfo() {
++  this.primalOffset = [0,0,0]
++  this.primalMinor  = [0,0,0]
++  this.mirrorOffset = [0,0,0]
++  this.mirrorMinor  = [0,0,0]
+ }
+-exports.pointPickShader = {
+-  vertex:   pickPointVertSrc,
+-  fragment: pickFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'pointSize', type: 'float'},
+-    {name: 'id', type: 'vec4'}
+-  ]
++
++var LINE_OFFSET = [ new OffsetInfo(), new OffsetInfo(), new OffsetInfo() ]
++
++function computeLineOffset(result, i, bounds, cubeEdges, cubeAxis) {
++  var primalOffset = result.primalOffset
++  var primalMinor  = result.primalMinor
++  var dualOffset   = result.mirrorOffset
++  var dualMinor    = result.mirrorMinor
++  var e = cubeEdges[i]
++
++  //Calculate offsets
++  for(var j=0; j<3; ++j) {
++    if(i === j) {
++      continue
++    }
++    var a = primalOffset,
++        b = dualOffset,
++        c = primalMinor,
++        d = dualMinor
++    if(e & (1<<j)) {
++      a = dualOffset
++      b = primalOffset
++      c = dualMinor
++      d = primalMinor
++    }
++    a[j] = bounds[0][j]
++    b[j] = bounds[1][j]
++    if(cubeAxis[j] > 0) {
++      c[j] = -1
++      d[j] = 0
++    } else {
++      c[j] = 0
++      d[j] = +1
++    }
++  }
+ }
+-exports.contourShader = {
+-  vertex:   contourVertSrc,
+-  fragment: contourFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'}
+-  ]
++
++var CUBE_ENABLE = [0,0,0]
++var DEFAULT_PARAMS = {
++  model:      identity,
++  view:       identity,
++  projection: identity
+ }
+ 
+-},{}],156:[function(require,module,exports){
+-'use strict'
++proto.isOpaque = function() {
++  return true
++}
+ 
+-var DEFAULT_VERTEX_NORMALS_EPSILON = 1e-6; // may be too large if triangles are very small
+-var DEFAULT_FACE_NORMALS_EPSILON = 1e-6;
++proto.isTransparent = function() {
++  return false
++}
+ 
+-var createShader  = require('gl-shader')
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var createTexture = require('gl-texture2d')
+-var normals       = require('normals')
+-var multiply      = require('gl-mat4/multiply')
+-var invert        = require('gl-mat4/invert')
+-var ndarray       = require('ndarray')
+-var colormap      = require('colormap')
+-var getContour    = require('simplicial-complex-contour')
+-var pool          = require('typedarray-pool')
+-var shaders       = require('./lib/shaders')
+-var closestPoint  = require('./lib/closest-point')
++proto.drawTransparent = function(params) {}
+ 
+-var meshShader    = shaders.meshShader
+-var wireShader    = shaders.wireShader
+-var pointShader   = shaders.pointShader
+-var pickShader    = shaders.pickShader
+-var pointPickShader = shaders.pointPickShader
+-var contourShader = shaders.contourShader
+ 
+-var identityMatrix = [
+-  1,0,0,0,
+-  0,1,0,0,
+-  0,0,1,0,
+-  0,0,0,1]
++var PRIMAL_MINOR  = [0,0,0]
++var MIRROR_MINOR  = [0,0,0]
++var PRIMAL_OFFSET = [0,0,0]
+ 
+-function SimplicialMesh(gl
+-  , texture
+-  , triShader
+-  , lineShader
+-  , pointShader
+-  , pickShader
+-  , pointPickShader
+-  , contourShader
+-  , trianglePositions
+-  , triangleIds
+-  , triangleColors
+-  , triangleUVs
+-  , triangleNormals
+-  , triangleVAO
+-  , edgePositions
+-  , edgeIds
+-  , edgeColors
+-  , edgeUVs
+-  , edgeVAO
+-  , pointPositions
+-  , pointIds
+-  , pointColors
+-  , pointUVs
+-  , pointSizes
+-  , pointVAO
+-  , contourPositions
+-  , contourVAO) {
++proto.draw = function(params) {
++  params = params || DEFAULT_PARAMS
+ 
+-  this.gl                = gl
+-  this.cells             = []
+-  this.positions         = []
+-  this.intensity         = []
+-  this.texture           = texture
+-  this.dirty             = true
++  var gl = this.gl
+ 
+-  this.triShader         = triShader
+-  this.lineShader        = lineShader
+-  this.pointShader       = pointShader
+-  this.pickShader        = pickShader
+-  this.pointPickShader   = pointPickShader
+-  this.contourShader     = contourShader
++  //Geometry for camera and axes
++  var model       = params.model || identity
++  var view        = params.view || identity
++  var projection  = params.projection || identity
++  var bounds      = this.bounds
+ 
+-  this.trianglePositions = trianglePositions
+-  this.triangleColors    = triangleColors
+-  this.triangleNormals   = triangleNormals
+-  this.triangleUVs       = triangleUVs
+-  this.triangleIds       = triangleIds
+-  this.triangleVAO       = triangleVAO
+-  this.triangleCount     = 0
++  //Unpack axis info
++  var cubeParams  = getCubeProperties(model, view, projection, bounds)
++  var cubeEdges   = cubeParams.cubeEdges
++  var cubeAxis    = cubeParams.axis
+ 
+-  this.lineWidth         = 1
+-  this.edgePositions     = edgePositions
+-  this.edgeColors        = edgeColors
+-  this.edgeUVs           = edgeUVs
+-  this.edgeIds           = edgeIds
+-  this.edgeVAO           = edgeVAO
+-  this.edgeCount         = 0
++  var cx = view[12]
++  var cy = view[13]
++  var cz = view[14]
++  var cw = view[15]
+ 
+-  this.pointPositions    = pointPositions
+-  this.pointColors       = pointColors
+-  this.pointUVs          = pointUVs
+-  this.pointSizes        = pointSizes
+-  this.pointIds          = pointIds
+-  this.pointVAO          = pointVAO
+-  this.pointCount        = 0
++  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
+ 
+-  this.contourLineWidth  = 1
+-  this.contourPositions  = contourPositions
+-  this.contourVAO        = contourVAO
+-  this.contourCount      = 0
+-  this.contourColor      = [0,0,0]
+-  this.contourEnable     = true
++  for(var i=0; i<3; ++i) {
++    this.lastCubeProps.cubeEdges[i] = cubeEdges[i]
++    this.lastCubeProps.axis[i] = cubeAxis[i]
++  }
+ 
+-  this.pickId            = 1
+-  this.bounds            = [
+-    [ Infinity, Infinity, Infinity],
+-    [-Infinity,-Infinity,-Infinity] ]
+-  this.clipBounds        = [
+-    [-Infinity,-Infinity,-Infinity],
+-    [ Infinity, Infinity, Infinity] ]
++  //Compute axis info
++  var lineOffset  = LINE_OFFSET
++  for(var i=0; i<3; ++i) {
++    computeLineOffset(
++      LINE_OFFSET[i],
++      i,
++      this.bounds,
++      cubeEdges,
++      cubeAxis)
++  }
+ 
+-  this.lightPosition = [1e5, 1e5, 0]
+-  this.ambientLight  = 0.8
+-  this.diffuseLight  = 0.8
+-  this.specularLight = 2.0
+-  this.roughness     = 0.5
+-  this.fresnel       = 1.5
++  //Set up state parameters
++  var gl = this.gl
+ 
+-  this.opacity       = 1.0
++  //Draw background first
++  var cubeEnable = CUBE_ENABLE
++  for(var i=0; i<3; ++i) {
++    if(this.backgroundEnable[i]) {
++      cubeEnable[i] = cubeAxis[i]
++    } else {
++      cubeEnable[i] = 0
++    }
++  }
+ 
+-  this._model       = identityMatrix
+-  this._view        = identityMatrix
+-  this._projection  = identityMatrix
+-  this._resolution  = [1,1]
+-}
++  this._background.draw(
++    model,
++    view,
++    projection,
++    bounds,
++    cubeEnable,
++    this.backgroundColor)
+ 
+-var proto = SimplicialMesh.prototype
++  //Draw lines
++  this._lines.bind(
++    model,
++    view,
++    projection,
++    this)
+ 
+-proto.isOpaque = function() {
+-  return this.opacity >= 1
+-}
++  //First draw grid lines and zero lines
++  for(var i=0; i<3; ++i) {
++    var x = [0,0,0]
++    if(cubeAxis[i] > 0) {
++      x[i] = bounds[1][i]
++    } else {
++      x[i] = bounds[0][i]
++    }
+ 
+-proto.isTransparent = function() {
+-  return this.opacity < 1
+-}
++    //Draw grid lines
++    for(var j=0; j<2; ++j) {
++      var u = (i + 1 + j) % 3
++      var v = (i + 1 + (j^1)) % 3
++      if(this.gridEnable[u]) {
++        this._lines.drawGrid(u, v, this.bounds, x, this.gridColor[u], this.gridWidth[u]*this.pixelRatio)
++      }
++    }
+ 
+-proto.pickSlots = 1
++    //Draw zero lines (need to do this AFTER all grid lines are drawn)
++    for(var j=0; j<2; ++j) {
++      var u = (i + 1 + j) % 3
++      var v = (i + 1 + (j^1)) % 3
++      if(this.zeroEnable[v]) {
++        //Check if zero line in bounds
++        if(bounds[0][v] <= 0 && bounds[1][v] >= 0) {
++          this._lines.drawZero(u, v, this.bounds, x, this.zeroLineColor[v], this.zeroLineWidth[v]*this.pixelRatio)
++        }
++      }
++    }
++  }
+ 
+-proto.setPickBase = function(id) {
+-  this.pickId = id
+-}
++  //Then draw axis lines and tick marks
++  for(var i=0; i<3; ++i) {
+ 
+-function genColormap(param) {
+-  var colors = colormap({
+-      colormap: param
+-    , nshades:  256
+-    , format:  'rgba'
+-  })
++    //Draw axis lines
++    if(this.lineEnable[i]) {
++      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].primalOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
++    }
++    if(this.lineMirror[i]) {
++      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].mirrorOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
++    }
+ 
+-  var result = new Uint8Array(256*4)
+-  for(var i=0; i<256; ++i) {
+-    var c = colors[i]
++    //Compute minor axes
++    var primalMinor = copyVec3(PRIMAL_MINOR, lineOffset[i].primalMinor)
++    var mirrorMinor = copyVec3(MIRROR_MINOR, lineOffset[i].mirrorMinor)
++    var tickLength  = this.lineTickLength
++    var op = 0
+     for(var j=0; j<3; ++j) {
+-      result[4*i+j] = c[j]
++      var scaleFactor = pixelScaleF / model[5*j]
++      primalMinor[j] *= tickLength[j] * scaleFactor
++      mirrorMinor[j] *= tickLength[j] * scaleFactor
++    }
++
++    //Draw axis line ticks
++    if(this.lineTickEnable[i]) {
++      this._lines.drawAxisTicks(i, lineOffset[i].primalOffset, primalMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
++    }
++    if(this.lineTickMirror[i]) {
++      this._lines.drawAxisTicks(i, lineOffset[i].mirrorOffset, mirrorMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
+     }
+-    result[4*i+3] = c[3]*255
+   }
+ 
+-  return ndarray(result, [256,256,4], [4,0,1])
+-}
++  //Draw text sprites
++  this._text.bind(
++    model,
++    view,
++    projection,
++    this.pixelRatio)
+ 
+-function unpackIntensity(cells, numVerts, cellIntensity) {
+-  var result = new Array(numVerts)
+-  for(var i=0; i<numVerts; ++i) {
+-    result[i] = 0
+-  }
+-  var numCells = cells.length
+-  for(var i=0; i<numCells; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      result[c[j]] = cellIntensity[i]
++  for(var i=0; i<3; ++i) {
++
++    var minor      = lineOffset[i].primalMinor
++    var offset     = copyVec3(PRIMAL_OFFSET, lineOffset[i].primalOffset)
++
++    for(var j=0; j<3; ++j) {
++      if(this.lineTickEnable[i]) {
++        offset[j] += pixelScaleF * minor[j] * Math.max(this.lineTickLength[j], 0)  / model[5*j]
++      }
+     }
+-  }
+-  return result
+-}
+ 
+-function takeZComponent(array) {
+-  var n = array.length
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = array[i][2]
+-  }
+-  return result
+-}
++    //Draw tick text
++    if(this.tickEnable[i]) {
+ 
+-proto.highlight = function(selection) {
+-  if(!selection || !this.contourEnable) {
+-    this.contourCount = 0
+-    return
+-  }
+-  var level = getContour(this.cells, this.intensity, selection.intensity)
+-  var cells         = level.cells
+-  var vertexIds     = level.vertexIds
+-  var vertexWeights = level.vertexWeights
+-  var numCells = cells.length
+-  var result = pool.mallocFloat32(2 * 3 * numCells)
+-  var ptr = 0
+-  for(var i=0; i<numCells; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<2; ++j) {
+-      var v = c[0]
+-      if(c.length === 2) {
+-        v = c[j]
++      //Add tick padding
++      for(var j=0; j<3; ++j) {
++        offset[j] += pixelScaleF * minor[j] * this.tickPad[j] / model[5*j]
+       }
+-      var a = vertexIds[v][0]
+-      var b = vertexIds[v][1]
+-      var w = vertexWeights[v]
+-      var wi = 1.0 - w
+-      var pa = this.positions[a]
+-      var pb = this.positions[b]
+-      for(var k=0; k<3; ++k) {
+-        result[ptr++] = w * pa[k] + wi * pb[k]
++
++      //Draw axis
++      this._text.drawTicks(
++        i,
++        this.tickSize[i],
++        this.tickAngle[i],
++        offset,
++        this.tickColor[i])
++    }
++
++    //Draw labels
++    if(this.labelEnable[i]) {
++
++      //Add label padding
++      for(var j=0; j<3; ++j) {
++        offset[j] += pixelScaleF * minor[j] * this.labelPad[j] / model[5*j]
+       }
++      offset[i] += 0.5 * (bounds[0][i] + bounds[1][i])
++
++      //Draw axis
++      this._text.drawLabel(
++        i,
++        this.labelSize[i],
++        this.labelAngle[i],
++        offset,
++        this.labelColor[i])
+     }
+   }
+-  this.contourCount = (ptr / 3)|0
+-  this.contourPositions.update(result.subarray(0, ptr))
+-  pool.free(result)
+ }
+ 
+-proto.update = function(params) {
+-  params = params || {}
+-  var gl = this.gl
++proto.dispose = function() {
++  this._text.dispose()
++  this._lines.dispose()
++  this._background.dispose()
++  this._lines = null
++  this._text = null
++  this._background = null
++  this.gl = null
++}
+ 
+-  this.dirty = true
++function createAxes(gl, options) {
++  var axes = new Axes(gl)
++  axes.update(options)
++  return axes
++}
+ 
+-  if('contourEnable' in params) {
+-    this.contourEnable = params.contourEnable
+-  }
+-  if('contourColor' in params) {
+-    this.contourColor = params.contourColor
+-  }
+-  if('lineWidth' in params) {
+-    this.lineWidth = params.lineWidth
+-  }
+-  if('lightPosition' in params) {
+-    this.lightPosition = params.lightPosition
+-  }
+-  if('opacity' in params) {
+-    this.opacity = params.opacity
+-  }
+-  if('ambient' in params) {
+-    this.ambientLight  = params.ambient
+-  }
+-  if('diffuse' in params) {
+-    this.diffuseLight = params.diffuse
+-  }
+-  if('specular' in params) {
+-    this.specularLight = params.specular
++},{"./lib/background.js":114,"./lib/cube.js":115,"./lib/lines.js":116,"./lib/text.js":118,"./lib/ticks.js":119}],114:[function(require,module,exports){
++'use strict'
++
++module.exports = createBackgroundCube
++
++var createBuffer = require('gl-buffer')
++var createVAO    = require('gl-vao')
++var createShader = require('./shaders').bg
++
++function BackgroundCube(gl, buffer, vao, shader) {
++  this.gl = gl
++  this.buffer = buffer
++  this.vao = vao
++  this.shader = shader
++}
++
++var proto = BackgroundCube.prototype
++
++proto.draw = function(model, view, projection, bounds, enable, colors) {
++  var needsBG = false
++  for(var i=0; i<3; ++i) {
++    needsBG = needsBG || enable[i]
+   }
+-  if('roughness' in params) {
+-    this.roughness = params.roughness
++  if(!needsBG) {
++    return
+   }
+-  if('fresnel' in params) {
+-    this.fresnel = params.fresnel
++
++  var gl = this.gl
++
++  gl.enable(gl.POLYGON_OFFSET_FILL)
++  gl.polygonOffset(1, 2)
++
++  this.shader.bind()
++  this.shader.uniforms = {
++    model: model,
++    view: view,
++    projection: projection,
++    bounds: bounds,
++    enable: enable,
++    colors: colors
+   }
++  this.vao.bind()
++  this.vao.draw(this.gl.TRIANGLES, 36)
+ 
+-  if(params.texture) {
+-    this.texture.dispose()
+-    this.texture = createTexture(gl, params.texture)
+-  } else if (params.colormap) {
+-    this.texture.shape = [256,256]
+-    this.texture.minFilter = gl.LINEAR_MIPMAP_LINEAR
+-    this.texture.magFilter = gl.LINEAR
+-    this.texture.setPixels(genColormap(params.colormap))
+-    this.texture.generateMipmap()
++  gl.disable(gl.POLYGON_OFFSET_FILL)
++}
++
++proto.dispose = function() {
++  this.vao.dispose()
++  this.buffer.dispose()
++  this.shader.dispose()
++}
++
++function createBackgroundCube(gl) {
++  //Create cube vertices
++  var vertices = []
++  var indices  = []
++  var ptr = 0
++  for(var d=0; d<3; ++d) {
++    var u = (d+1) % 3
++    var v = (d+2) % 3
++    var x = [0,0,0]
++    var c = [0,0,0]
++    for(var s=-1; s<=1; s+=2) {
++      indices.push(ptr,   ptr+2, ptr+1,
++                   ptr+1, ptr+2, ptr+3)
++      x[d] = s
++      c[d] = s
++      for(var i=-1; i<=1; i+=2) {
++        x[u] = i
++        for(var j=-1; j<=1; j+=2) {
++          x[v] = j
++          vertices.push(x[0], x[1], x[2],
++                        c[0], c[1], c[2])
++          ptr += 1
++        }
++      }
++      //Swap u and v
++      var tt = u
++      u = v
++      v = tt
++    }
+   }
+ 
+-  var cells = params.cells
+-  var positions = params.positions
++  //Allocate buffer and vertex array
++  var buffer = createBuffer(gl, new Float32Array(vertices))
++  var elements = createBuffer(gl, new Uint16Array(indices), gl.ELEMENT_ARRAY_BUFFER)
++  var vao = createVAO(gl, [
++      {
++        buffer: buffer,
++        type: gl.FLOAT,
++        size: 3,
++        offset: 0,
++        stride: 24
++      },
++      {
++        buffer: buffer,
++        type: gl.FLOAT,
++        size: 3,
++        offset: 12,
++        stride: 24
++      }
++    ], elements)
+ 
+-  if(!positions || !cells) {
+-    return
+-  }
++  //Create shader object
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  shader.attributes.normal.location = 1
+ 
+-  var tPos = []
+-  var tCol = []
+-  var tNor = []
+-  var tUVs = []
+-  var tIds = []
++  return new BackgroundCube(gl, buffer, vao, shader)
++}
+ 
+-  var ePos = []
+-  var eCol = []
+-  var eUVs = []
+-  var eIds = []
++},{"./shaders":117,"gl-buffer":121,"gl-vao":206}],115:[function(require,module,exports){
++"use strict"
+ 
+-  var pPos = []
+-  var pCol = []
+-  var pUVs = []
+-  var pSiz = []
+-  var pIds = []
++module.exports = getCubeEdges
+ 
+-  //Save geometry data for picking calculations
+-  this.cells     = cells
+-  this.positions = positions
++var bits      = require('bit-twiddle')
++var multiply  = require('gl-mat4/multiply')
++var invert    = require('gl-mat4/invert')
++var splitPoly = require('split-polygon')
++var orient    = require('robust-orientation')
+ 
+-  //Compute normals
+-  var vertexNormals = params.vertexNormals
+-  var cellNormals   = params.cellNormals
+-  var vertexNormalsEpsilon = params.vertexNormalsEpsilon === void(0) ? DEFAULT_VERTEX_NORMALS_EPSILON : params.vertexNormalsEpsilon
+-  var faceNormalsEpsilon = params.faceNormalsEpsilon === void(0) ? DEFAULT_FACE_NORMALS_EPSILON : params.faceNormalsEpsilon
+-  if(params.useFacetNormals && !cellNormals) {
+-    cellNormals = normals.faceNormals(cells, positions, faceNormalsEpsilon)
+-  }
+-  if(!cellNormals && !vertexNormals) {
+-    vertexNormals = normals.vertexNormals(cells, positions, vertexNormalsEpsilon)
+-  }
++var mvp        = new Array(16)
++var imvp       = new Array(16)
++var pCubeVerts = new Array(8)
++var cubeVerts  = new Array(8)
++var x          = new Array(3)
++var zero3      = [0,0,0]
+ 
+-  //Compute colors
+-  var vertexColors    = params.vertexColors
+-  var cellColors      = params.cellColors
+-  var meshColor       = params.meshColor || [1,1,1,1]
++;(function() {
++  for(var i=0; i<8; ++i) {
++    pCubeVerts[i] =[1,1,1,1]
++    cubeVerts[i] = [1,1,1]
++  }
++})()
+ 
+-  //UVs
+-  var vertexUVs       = params.vertexUVs
+-  var vertexIntensity = params.vertexIntensity
+-  var cellUVs         = params.cellUVs
+-  var cellIntensity   = params.cellIntensity
+ 
+-  var intensityLo     = Infinity
+-  var intensityHi     = -Infinity
+-  if(!vertexUVs && !cellUVs) {
+-    if(vertexIntensity) {
+-      for(var i=0; i<vertexIntensity.length; ++i) {
+-        var f = vertexIntensity[i]
+-        intensityLo = Math.min(intensityLo, f)
+-        intensityHi = Math.max(intensityHi, f)
+-      }
+-    } else if(cellIntensity) {
+-      for(var i=0; i<cellIntensity.length; ++i) {
+-        var f = cellIntensity[i]
+-        intensityLo = Math.min(intensityLo, f)
+-        intensityHi = Math.max(intensityHi, f)
+-      }
+-    } else {
+-      for(var i=0; i<positions.length; ++i) {
+-        var f = positions[i][2]
+-        intensityLo = Math.min(intensityLo, f)
+-        intensityHi = Math.max(intensityHi, f)
+-      }
++function transformHg(result, x, mat) {
++  for(var i=0; i<4; ++i) {
++    result[i] = mat[12+i]
++    for(var j=0; j<3; ++j) {
++      result[i] += x[j]*mat[4*j+i]
+     }
+   }
++}
+ 
+-  if(vertexIntensity) {
+-    this.intensity = vertexIntensity
+-  } else if(cellIntensity) {
+-    this.intensity = unpackIntensity(cells, positions.length, cellIntensity)
+-  } else {
+-    this.intensity = takeZComponent(positions)
+-  }
+-
+-  //Point size
+-  var pointSizes      = params.pointSizes
+-  var meshPointSize   = params.pointSize || 1.0
++var FRUSTUM_PLANES = [
++  [ 0, 0, 1, 0, 0],
++  [ 0, 0,-1, 1, 0],
++  [ 0,-1, 0, 1, 0],
++  [ 0, 1, 0, 1, 0],
++  [-1, 0, 0, 1, 0],
++  [ 1, 0, 0, 1, 0]
++]
+ 
+-  //Update bounds
+-  this.bounds       = [[Infinity,Infinity,Infinity], [-Infinity,-Infinity,-Infinity]]
+-  for(var i=0; i<positions.length; ++i) {
+-    var p = positions[i]
+-    for(var j=0; j<3; ++j) {
+-      if(isNaN(p[j]) || !isFinite(p[j])) {
+-        continue
+-      }
+-      this.bounds[0][j] = Math.min(this.bounds[0][j], p[j])
+-      this.bounds[1][j] = Math.max(this.bounds[1][j], p[j])
++function polygonArea(p) {
++  for(var i=0; i<FRUSTUM_PLANES.length; ++i) {
++    p = splitPoly.positive(p, FRUSTUM_PLANES[i])
++    if(p.length < 3) {
++      return 0
+     }
+   }
+ 
+-  //Pack cells into buffers
+-  var triangleCount = 0
+-  var edgeCount = 0
+-  var pointCount = 0
++  var base = p[0]
++  var ax = base[0] / base[3]
++  var ay = base[1] / base[3]
++  var area = 0.0
++  for(var i=1; i+1<p.length; ++i) {
++    var b = p[i]
++    var c = p[i+1]
+ 
+-fill_loop:
+-  for(var i=0; i<cells.length; ++i) {
+-    var cell = cells[i]
+-    switch(cell.length) {
+-      case 1:
++    var bx = b[0]/b[3]
++    var by = b[1]/b[3]
++    var cx = c[0]/c[3]
++    var cy = c[1]/c[3]
+ 
+-        var v = cell[0]
+-        var p = positions[v]
++    var ux = bx - ax
++    var uy = by - ay
+ 
+-        //Check NaNs
+-        for(var j=0; j<3; ++j) {
+-          if(isNaN(p[j]) || !isFinite(p[j])) {
+-            continue fill_loop
+-          }
+-        }
++    var vx = cx - ax
++    var vy = cy - ay
+ 
+-        pPos.push(p[0], p[1], p[2])
++    area += Math.abs(ux * vy - uy * vx)
++  }
+ 
+-        var c
+-        if(vertexColors) {
+-          c = vertexColors[v]
+-        } else if(cellColors) {
+-          c = cellColors[i]
+-        } else {
+-          c = meshColor
+-        }
+-        if(c.length === 3) {
+-          pCol.push(c[0], c[1], c[2], 1)
+-        } else {
+-          pCol.push(c[0], c[1], c[2], c[3])
+-        }
++  return area
++}
+ 
+-        var uv
+-        if(vertexUVs) {
+-          uv = vertexUVs[v]
+-        } else if(vertexIntensity) {
+-          uv = [
+-            (vertexIntensity[v] - intensityLo) /
+-            (intensityHi - intensityLo), 0]
+-        } else if(cellUVs) {
+-          uv = cellUVs[i]
+-        } else if(cellIntensity) {
+-          uv = [
+-            (cellIntensity[i] - intensityLo) /
+-            (intensityHi - intensityLo), 0]
+-        } else {
+-          uv = [
+-            (p[2] - intensityLo) /
+-            (intensityHi - intensityLo), 0]
+-        }
+-        pUVs.push(uv[0], uv[1])
++var CUBE_EDGES = [1,1,1]
++var CUBE_AXIS  = [0,0,0]
++var CUBE_RESULT = {
++  cubeEdges: CUBE_EDGES,
++  axis: CUBE_AXIS
++}
+ 
+-        if(pointSizes) {
+-          pSiz.push(pointSizes[v])
+-        } else {
+-          pSiz.push(meshPointSize)
+-        }
++function getCubeEdges(model, view, projection, bounds) {
+ 
+-        pIds.push(i)
++  //Concatenate matrices
++  multiply(mvp, view, model)
++  multiply(mvp, projection, mvp)
++  
++  //First project cube vertices
++  var ptr = 0
++  for(var i=0; i<2; ++i) {
++    x[2] = bounds[i][2]
++    for(var j=0; j<2; ++j) {
++      x[1] = bounds[j][1]
++      for(var k=0; k<2; ++k) {
++        x[0] = bounds[k][0]
++        transformHg(pCubeVerts[ptr], x, mvp)
++        ptr += 1
++      }
++    }
++  }
+ 
+-        pointCount += 1
+-      break
++  //Classify camera against cube faces
++  var closest = -1
+ 
+-      case 2:
++  for(var i=0; i<8; ++i) {
++    var w = pCubeVerts[i][3]
++    for(var l=0; l<3; ++l) {
++      cubeVerts[i][l] = pCubeVerts[i][l] / w
++    }
++    if(w < 0) {
++      if(closest < 0) {
++        closest = i
++      } else if(cubeVerts[i][2] < cubeVerts[closest][2]) {
++        closest = i
++      }
++    }    
++  }
+ 
+-        //Check NaNs
+-        for(var j=0; j<2; ++j) {
+-          var v = cell[j]
+-          var p = positions[v]
+-          for(var k=0; k<3; ++k) {
+-            if(isNaN(p[k]) || !isFinite(p[k])) {
+-              continue fill_loop
+-            }
+-          }
++  if(closest < 0) {
++    closest = 0
++    for(var d=0; d<3; ++d) {
++      var u = (d+2) % 3
++      var v = (d+1) % 3
++      var o0 = -1
++      var o1 = -1
++      for(var s=0; s<2; ++s) {
++        var f0 = (s<<d)
++        var f1 = f0 + (s << u) + ((1-s) << v)
++        var f2 = f0 + ((1-s) << u) + (s << v)
++        if(orient(cubeVerts[f0], cubeVerts[f1], cubeVerts[f2], zero3) < 0) {
++          continue
+         }
+-
+-        for(var j=0; j<2; ++j) {
+-          var v = cell[j]
+-          var p = positions[v]
+-
+-          ePos.push(p[0], p[1], p[2])
+-
+-          var c
+-          if(vertexColors) {
+-            c = vertexColors[v]
+-          } else if(cellColors) {
+-            c = cellColors[i]
+-          } else {
+-            c = meshColor
+-          }
+-          if(c.length === 3) {
+-            eCol.push(c[0], c[1], c[2], 1)
+-          } else {
+-            eCol.push(c[0], c[1], c[2], c[3])
+-          }
+-
+-          var uv
+-          if(vertexUVs) {
+-            uv = vertexUVs[v]
+-          } else if(vertexIntensity) {
+-            uv = [
+-              (vertexIntensity[v] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else if(cellUVs) {
+-            uv = cellUVs[i]
+-          } else if(cellIntensity) {
+-            uv = [
+-              (cellIntensity[i] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else {
+-            uv = [
+-              (p[2] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          }
+-          eUVs.push(uv[0], uv[1])
+-
+-          eIds.push(i)
++        if(s) {
++          o0 = 1
++        } else {
++          o1 = 1
+         }
+-        edgeCount += 1
+-      break
+-
+-      case 3:
+-        //Check NaNs
+-        for(var j=0; j<3; ++j) {
+-          var v = cell[j]
+-          var p = positions[v]
+-          for(var k=0; k<3; ++k) {
+-            if(isNaN(p[k]) || !isFinite(p[k])) {
+-              continue fill_loop
+-            }
+-          }
++      }
++      if(o0 < 0 || o1 < 0) {
++        if(o1 > o0) {
++          closest |= 1<<d
+         }
++        continue
++      } 
++      for(var s=0; s<2; ++s) {
++        var f0 = (s<<d)
++        var f1 = f0 + (s << u) + ((1-s) << v)
++        var f2 = f0 + ((1-s) << u) + (s << v)    
++        var o = polygonArea([
++            pCubeVerts[f0], 
++            pCubeVerts[f1], 
++            pCubeVerts[f2], 
++            pCubeVerts[f0+(1<<u)+(1<<v)]])
++        if(s) {
++          o0 = o
++        } else {
++          o1 = o
++        }
++      }
++      if(o1 > o0) {
++        closest |= 1<<d
++        continue
++      }
++    }
++  }
+ 
+-        for(var j=0; j<3; ++j) {
+-          var v = cell[j]
+-
+-          var p = positions[v]
+-          tPos.push(p[0], p[1], p[2])
+-
+-          var c
+-          if(vertexColors) {
+-            c = vertexColors[v]
+-          } else if(cellColors) {
+-            c = cellColors[i]
+-          } else {
+-            c = meshColor
+-          }
+-          if(c.length === 3) {
+-            tCol.push(c[0], c[1], c[2], 1)
+-          } else {
+-            tCol.push(c[0], c[1], c[2], c[3])
+-          }
++  var farthest = 7^closest
+ 
+-          var uv
+-          if(vertexUVs) {
+-            uv = vertexUVs[v]
+-          } else if(vertexIntensity) {
+-            uv = [
+-              (vertexIntensity[v] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else if(cellUVs) {
+-            uv = cellUVs[i]
+-          } else if(cellIntensity) {
+-            uv = [
+-              (cellIntensity[i] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else {
+-            uv = [
+-              (p[2] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          }
+-          tUVs.push(uv[0], uv[1])
++  //Find lowest vertex which is not closest closest
++  var bottom = -1
++  for(var i=0; i<8; ++i) {
++    if(i === closest || i === farthest) {
++      continue
++    }
++    if(bottom < 0) {
++      bottom = i
++    } else if(cubeVerts[bottom][1] > cubeVerts[i][1]) {
++      bottom = i
++    }
++  }
+ 
+-          var q
+-          if(vertexNormals) {
+-            q = vertexNormals[v]
+-          } else {
+-            q = cellNormals[i]
+-          }
+-          tNor.push(q[0], q[1], q[2])
++  //Find left/right neighbors of bottom vertex
++  var left = -1
++  for(var i=0; i<3; ++i) {
++    var idx = bottom ^ (1<<i)
++    if(idx === closest || idx === farthest) {
++      continue
++    }
++    if(left < 0) {
++      left = idx
++    }
++    var v = cubeVerts[idx]
++    if(v[0] < cubeVerts[left][0]) {
++      left = idx
++    }
++  }
++  var right = -1
++  for(var i=0; i<3; ++i) {
++    var idx = bottom ^ (1<<i)
++    if(idx === closest || idx === farthest || idx === left) {
++      continue
++    }
++    if(right < 0) {
++      right = idx
++    }
++    var v = cubeVerts[idx]
++    if(v[0] > cubeVerts[right][0]) {
++      right = idx
++    }
++  }
+ 
+-          tIds.push(i)
+-        }
+-        triangleCount += 1
+-      break
++  //Determine edge axis coordinates
++  var cubeEdges = CUBE_EDGES
++  cubeEdges[0] = cubeEdges[1] = cubeEdges[2] = 0
++  cubeEdges[bits.log2(left^bottom)] = bottom&left
++  cubeEdges[bits.log2(bottom^right)] = bottom&right
++  var top = right ^ 7
++  if(top === closest || top === farthest) {
++    top = left ^ 7
++    cubeEdges[bits.log2(right^top)] = top&right
++  } else {
++    cubeEdges[bits.log2(left^top)] = top&left
++  }
+ 
+-      default:
+-      break
++  //Determine visible faces
++  var axis = CUBE_AXIS
++  var cutCorner = closest
++  for(var d=0; d<3; ++d) {
++    if(cutCorner & (1<<d)) {
++      axis[d] = -1
++    } else {
++      axis[d] = 1
+     }
+   }
+ 
+-  this.pointCount     = pointCount
+-  this.edgeCount      = edgeCount
+-  this.triangleCount  = triangleCount
++  //Return result
++  return CUBE_RESULT
++}
++},{"bit-twiddle":49,"gl-mat4/invert":142,"gl-mat4/multiply":144,"robust-orientation":418,"split-polygon":436}],116:[function(require,module,exports){
++'use strict'
+ 
+-  this.pointPositions.update(pPos)
+-  this.pointColors.update(pCol)
+-  this.pointUVs.update(pUVs)
+-  this.pointSizes.update(pSiz)
+-  this.pointIds.update(new Uint32Array(pIds))
++module.exports    = createLines
++
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var createShader  = require('./shaders').line
++
++var MAJOR_AXIS = [0,0,0]
++var MINOR_AXIS = [0,0,0]
++var SCREEN_AXIS = [0,0,0]
++var OFFSET_VEC = [0,0,0]
++var SHAPE = [1,1]
+ 
+-  this.edgePositions.update(ePos)
+-  this.edgeColors.update(eCol)
+-  this.edgeUVs.update(eUVs)
+-  this.edgeIds.update(new Uint32Array(eIds))
++function zeroVec(a) {
++  a[0] = a[1] = a[2] = 0
++  return a
++}
+ 
+-  this.trianglePositions.update(tPos)
+-  this.triangleColors.update(tCol)
+-  this.triangleUVs.update(tUVs)
+-  this.triangleNormals.update(tNor)
+-  this.triangleIds.update(new Uint32Array(tIds))
++function copyVec(a,b) {
++  a[0] = b[0]
++  a[1] = b[1]
++  a[2] = b[2]
++  return a
+ }
+ 
+-proto.drawTransparent = proto.draw = function(params) {
+-  params = params || {}
+-  var gl          = this.gl
+-  var model       = params.model      || identityMatrix
+-  var view        = params.view       || identityMatrix
+-  var projection  = params.projection || identityMatrix
++function Lines(gl, vertBuffer, vao, shader, tickCount, tickOffset, gridCount, gridOffset) {
++  this.gl         = gl
++  this.vertBuffer = vertBuffer
++  this.vao        = vao
++  this.shader     = shader
++  this.tickCount  = tickCount
++  this.tickOffset = tickOffset
++  this.gridCount  = gridCount
++  this.gridOffset = gridOffset
++}
+ 
+-  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
+-  for(var i=0; i<3; ++i) {
+-    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
+-    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
+-  }
++var proto = Lines.prototype
+ 
+-  var uniforms = {
+-    model:      model,
+-    view:       view,
+-    projection: projection,
++proto.bind = function(model, view, projection) {
++  this.shader.bind()
++  this.shader.uniforms.model = model
++  this.shader.uniforms.view = view
++  this.shader.uniforms.projection = projection
+ 
+-    clipBounds: clipBounds,
++  SHAPE[0] = this.gl.drawingBufferWidth
++  SHAPE[1] = this.gl.drawingBufferHeight
+ 
+-    kambient:   this.ambientLight,
+-    kdiffuse:   this.diffuseLight,
+-    kspecular:  this.specularLight,
+-    roughness:  this.roughness,
+-    fresnel:    this.fresnel,
++  this.shader.uniforms.screenShape = SHAPE
++  this.vao.bind()
++}
+ 
+-    eyePosition:   [0,0,0],
+-    lightPosition: [0,0,0],
++proto.drawAxisLine = function(j, bounds, offset, color, lineWidth) {
++  var minorAxis = zeroVec(MINOR_AXIS)
++  this.shader.uniforms.majorAxis = MINOR_AXIS
+ 
+-    opacity:  this.opacity,
++  minorAxis[j] = bounds[1][j] - bounds[0][j]
++  this.shader.uniforms.minorAxis = minorAxis
+ 
+-    contourColor: this.contourColor,
++  var noffset = copyVec(OFFSET_VEC, offset)
++  noffset[j] += bounds[0][j]
++  this.shader.uniforms.offset = noffset
+ 
+-    texture:    0
+-  }
++  this.shader.uniforms.lineWidth = lineWidth
+ 
+-  this.texture.bind(0)
++  this.shader.uniforms.color = color
+ 
+-  var invCameraMatrix = new Array(16)
+-  multiply(invCameraMatrix, uniforms.view, uniforms.model)
+-  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
+-  invert(invCameraMatrix, invCameraMatrix)
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[(j+2)%3] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.vao.draw(this.gl.TRIANGLES, 6)
+ 
+-  for(var i=0; i<3; ++i) {
+-    uniforms.eyePosition[i] = invCameraMatrix[12+i] / invCameraMatrix[15]
+-  }
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[(j+1)%3] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.vao.draw(this.gl.TRIANGLES, 6)
++}
+ 
+-  var w = invCameraMatrix[15]
+-  for(var i=0; i<3; ++i) {
+-    w += this.lightPosition[i] * invCameraMatrix[4*i+3]
+-  }
+-  for(var i=0; i<3; ++i) {
+-    var s = invCameraMatrix[12+i]
+-    for(var j=0; j<3; ++j) {
+-      s += invCameraMatrix[4*j+i] * this.lightPosition[j]
+-    }
+-    uniforms.lightPosition[i] = s / w
++proto.drawAxisTicks = function(j, offset, minorAxis, color, lineWidth) {
++  if(!this.tickCount[j]) {
++    return
+   }
+ 
+-  if(this.triangleCount > 0) {
+-    var shader = this.triShader
+-    shader.bind()
+-    shader.uniforms = uniforms
++  var majorAxis = zeroVec(MAJOR_AXIS)
++  majorAxis[j]  = 1
++  this.shader.uniforms.majorAxis = majorAxis
++  this.shader.uniforms.offset    = offset
++  this.shader.uniforms.minorAxis = minorAxis
++  this.shader.uniforms.color     = color
++  this.shader.uniforms.lineWidth = lineWidth
+ 
+-    this.triangleVAO.bind()
+-    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
+-    this.triangleVAO.unbind()
+-  }
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[j] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.vao.draw(this.gl.TRIANGLES, this.tickCount[j], this.tickOffset[j])
++}
+ 
+-  if(this.edgeCount > 0 && this.lineWidth > 0) {
+-    var shader = this.lineShader
+-    shader.bind()
+-    shader.uniforms = uniforms
+ 
+-    this.edgeVAO.bind()
+-    gl.lineWidth(this.lineWidth)
+-    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
+-    this.edgeVAO.unbind()
++proto.drawGrid = function(i, j, bounds, offset, color, lineWidth) {
++  if(!this.gridCount[i]) {
++    return
+   }
+ 
+-  if(this.pointCount > 0) {
+-    var shader = this.pointShader
+-    shader.bind()
+-    shader.uniforms = uniforms
++  var minorAxis = zeroVec(MINOR_AXIS)
++  minorAxis[j]  = bounds[1][j] - bounds[0][j]
++  this.shader.uniforms.minorAxis = minorAxis
+ 
+-    this.pointVAO.bind()
+-    gl.drawArrays(gl.POINTS, 0, this.pointCount)
+-    this.pointVAO.unbind()
+-  }
++  var noffset = copyVec(OFFSET_VEC, offset)
++  noffset[j] += bounds[0][j]
++  this.shader.uniforms.offset = noffset
+ 
+-  if(this.contourEnable && this.contourCount > 0 && this.contourLineWidth > 0) {
+-    var shader = this.contourShader
+-    shader.bind()
+-    shader.uniforms = uniforms
++  var majorAxis = zeroVec(MAJOR_AXIS)
++  majorAxis[i]  = 1
++  this.shader.uniforms.majorAxis = majorAxis
+ 
+-    this.contourVAO.bind()
+-    gl.drawArrays(gl.LINES, 0, this.contourCount)
+-    this.contourVAO.unbind()
+-  }
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[i] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.shader.uniforms.lineWidth = lineWidth
++
++  this.shader.uniforms.color = color
++  this.vao.draw(this.gl.TRIANGLES, this.gridCount[i], this.gridOffset[i])
+ }
+ 
+-proto.drawPick = function(params) {
+-  params = params || {}
++proto.drawZero = function(j, i, bounds, offset, color, lineWidth) {
++  var minorAxis = zeroVec(MINOR_AXIS)
++  this.shader.uniforms.majorAxis = minorAxis
+ 
+-  var gl         = this.gl
++  minorAxis[j] = bounds[1][j] - bounds[0][j]
++  this.shader.uniforms.minorAxis = minorAxis
+ 
+-  var model      = params.model      || identityMatrix
+-  var view       = params.view       || identityMatrix
+-  var projection = params.projection || identityMatrix
++  var noffset = copyVec(OFFSET_VEC, offset)
++  noffset[j] += bounds[0][j]
++  this.shader.uniforms.offset = noffset
+ 
+-  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
+-  for(var i=0; i<3; ++i) {
+-    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
+-    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
+-  }
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[i] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.shader.uniforms.lineWidth = lineWidth
+ 
+-  //Save camera parameters
+-  this._model      = [].slice.call(model)
+-  this._view       = [].slice.call(view)
+-  this._projection = [].slice.call(projection)
+-  this._resolution = [gl.drawingBufferWidth, gl.drawingBufferHeight]
++  this.shader.uniforms.color = color
++  this.vao.draw(this.gl.TRIANGLES, 6)
++}
+ 
+-  var uniforms = {
+-    model:      model,
+-    view:       view,
+-    projection: projection,
+-    clipBounds: clipBounds,
+-    pickId:     this.pickId / 255.0,
+-  }
++proto.dispose = function() {
++  this.vao.dispose()
++  this.vertBuffer.dispose()
++  this.shader.dispose()
++}
+ 
+-  var shader = this.pickShader
+-  shader.bind()
+-  shader.uniforms = uniforms
++function createLines(gl, bounds, ticks) {
++  var vertices    = []
++  var tickOffset  = [0,0,0]
++  var tickCount   = [0,0,0]
+ 
+-  if(this.triangleCount > 0) {
+-    this.triangleVAO.bind()
+-    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
+-    this.triangleVAO.unbind()
+-  }
++  //Create grid lines for each axis/direction
++  var gridOffset = [0,0,0]
++  var gridCount  = [0,0,0]
+ 
+-  if(this.edgeCount > 0) {
+-    this.edgeVAO.bind()
+-    gl.lineWidth(this.lineWidth)
+-    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
+-    this.edgeVAO.unbind()
+-  }
++  //Add zero line
++  vertices.push(
++    0,0,1,   0,1,1,   0,0,-1,
++    0,0,-1,  0,1,1,   0,1,-1)
+ 
+-  if(this.pointCount > 0) {
+-    var shader = this.pointPickShader
+-    shader.bind()
+-    shader.uniforms = uniforms
++  for(var i=0; i<3; ++i) {
++    //Axis tick marks
++    var start = ((vertices.length / 3)|0)
++    for(var j=0; j<ticks[i].length; ++j) {
++      var x = +ticks[i][j].x
++      vertices.push(
++        x,0,1,   x,1,1,   x,0,-1,
++        x,0,-1,  x,1,1,   x,1,-1)
++    }
++    var end = ((vertices.length / 3)|0)
++    tickOffset[i] = start
++    tickCount[i]  = end - start
+ 
+-    this.pointVAO.bind()
+-    gl.drawArrays(gl.POINTS, 0, this.pointCount)
+-    this.pointVAO.unbind()
++    //Grid lines
++    var start = ((vertices.length / 3)|0)
++    for(var k=0; k<ticks[i].length; ++k) {
++      var x = +ticks[i][k].x
++      vertices.push(
++        x,0,1,   x,1,1,   x,0,-1,
++        x,0,-1,  x,1,1,   x,1,-1)
++    }
++    var end = ((vertices.length / 3)|0)
++    gridOffset[i] = start
++    gridCount[i]  = end - start
+   }
+-}
+ 
++  //Create cube VAO
++  var vertBuf = createBuffer(gl, new Float32Array(vertices))
++  var vao = createVAO(gl, [
++    { "buffer": vertBuf,
++      "type": gl.FLOAT,
++      "size": 3,
++      "stride": 0,
++      "offset": 0
++    }
++  ])
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  return new Lines(gl, vertBuf, vao, shader, tickCount, tickOffset, gridCount, gridOffset)
++}
+ 
+-proto.pick = function(pickData) {
+-  if(!pickData) {
+-    return null
+-  }
+-  if(pickData.id !== this.pickId) {
+-    return null
+-  }
+-
+-  var cellId    = pickData.value[0] + 256*pickData.value[1] + 65536*pickData.value[2]
+-  var cell      = this.cells[cellId]
+-  var positions = this.positions
++},{"./shaders":117,"gl-buffer":121,"gl-vao":206}],117:[function(require,module,exports){
++'use strict'
+ 
+-  var simplex   = new Array(cell.length)
+-  for(var i=0; i<cell.length; ++i) {
+-    simplex[i] = positions[cell[i]]
+-  }
+ 
+-  var data = closestPoint(
+-    simplex,
+-    [pickData.coord[0], this._resolution[1]-pickData.coord[1]],
+-    this._model,
+-    this._view,
+-    this._projection,
+-    this._resolution)
++var createShader = require('gl-shader')
+ 
+-  if(!data) {
+-    return null
+-  }
++var lineVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, majorAxis, minorAxis, screenAxis;\nuniform float lineWidth;\nuniform vec2 screenShape;\n\nvec3 project(vec3 p) {\n  vec4 pp = projection * view * model * vec4(p, 1.0);\n  return pp.xyz / max(pp.w, 0.0001);\n}\n\nvoid main() {\n  vec3 major = position.x * majorAxis;\n  vec3 minor = position.y * minorAxis;\n\n  vec3 vPosition = major + minor + offset;\n  vec3 pPosition = project(vPosition);\n  vec3 offset = project(vPosition + screenAxis * position.z);\n\n  vec2 screen = normalize((offset - pPosition).xy * screenShape) / screenShape;\n\n  gl_Position = vec4(pPosition + vec3(0.5 * screen * lineWidth, 0), 1.0);\n}\n"
++var lineFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
++exports.line = function(gl) {
++  return createShader(gl, lineVert, lineFrag, null, [
++    {name: 'position', type: 'vec3'}
++  ])
++}
+ 
+-  var weights = data[2]
+-  var interpIntensity = 0.0
+-  for(var i=0; i<cell.length; ++i) {
+-    interpIntensity += weights[i] * this.intensity[cell[i]]
+-  }
++var textVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, axis;\nuniform float scale, angle, pixelScale;\nuniform vec2 resolution;\n\nvoid main() {  \n  //Compute plane offset\n  vec2 planeCoord = position.xy * pixelScale;\n  mat2 planeXform = scale * mat2(cos(angle), sin(angle),\n                                -sin(angle), cos(angle));\n  vec2 viewOffset = 2.0 * planeXform * planeCoord / resolution;\n\n  //Compute world offset\n  float axisDistance = position.z;\n  vec3 dataPosition = axisDistance * axis + offset;\n  vec4 worldPosition = model * vec4(dataPosition, 1);\n  \n  //Compute clip position\n  vec4 viewPosition = view * worldPosition;\n  vec4 clipPosition = projection * viewPosition;\n  clipPosition /= clipPosition.w;\n\n  //Apply text offset in clip coordinates\n  clipPosition += vec4(viewOffset, 0, 0);\n\n  //Done\n  gl_Position = clipPosition;\n}"
++var textFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
++exports.text = function(gl) {
++  return createShader(gl, textVert, textFrag, null, [
++    {name: 'position', type: 'vec3'}
++  ])
++}
+ 
+-  return {
+-    position: data[1],
+-    index:    cell[data[0]],
+-    cell:     cell,
+-    cellId:   cellId,
+-    intensity:  interpIntensity,
+-    dataCoordinate: this.positions[cell[data[0]]]
+-  }
++var bgVert = "#define GLSLIFY 1\nattribute vec3 position;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection;\nuniform vec3 enable;\nuniform vec3 bounds[2];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  if(dot(normal, enable) > 0.0) {\n    vec3 nPosition = mix(bounds[0], bounds[1], 0.5 * (position + 1.0));\n    gl_Position = projection * view * model * vec4(nPosition, 1.0);\n  } else {\n    gl_Position = vec4(0,0,0,0);\n  }\n  colorChannel = abs(normal);\n}"
++var bgFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 colors[3];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  gl_FragColor = colorChannel.x * colors[0] + \n                 colorChannel.y * colors[1] +\n                 colorChannel.z * colors[2];\n}"
++exports.bg = function(gl) {
++  return createShader(gl, bgVert, bgFrag, null, [
++    {name: 'position', type: 'vec3'},
++    {name: 'normal', type: 'vec3'}
++  ])
+ }
+ 
++},{"gl-shader":190}],118:[function(require,module,exports){
++(function (process){
++"use strict"
+ 
+-proto.dispose = function() {
+-  this.texture.dispose()
++module.exports = createTextSprites
+ 
+-  this.triShader.dispose()
+-  this.lineShader.dispose()
+-  this.pointShader.dispose()
+-  this.pickShader.dispose()
+-  this.pointPickShader.dispose()
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var vectorizeText = require('vectorize-text')
++var createShader  = require('./shaders').text
+ 
+-  this.triangleVAO.dispose()
+-  this.trianglePositions.dispose()
+-  this.triangleColors.dispose()
+-  this.triangleUVs.dispose()
+-  this.triangleNormals.dispose()
+-  this.triangleIds.dispose()
++var globals = window || process.global || {}
++var __TEXT_CACHE  = globals.__TEXT_CACHE || {}
++globals.__TEXT_CACHE = {}
+ 
+-  this.edgeVAO.dispose()
+-  this.edgePositions.dispose()
+-  this.edgeColors.dispose()
+-  this.edgeUVs.dispose()
+-  this.edgeIds.dispose()
++//Vertex buffer format for text is:
++//
++/// [x,y,z] = Spatial coordinate
++//
+ 
+-  this.pointVAO.dispose()
+-  this.pointPositions.dispose()
+-  this.pointColors.dispose()
+-  this.pointUVs.dispose()
+-  this.pointSizes.dispose()
+-  this.pointIds.dispose()
++var VERTEX_SIZE = 3
++var VERTEX_STRIDE = VERTEX_SIZE * 4
+ 
+-  this.contourVAO.dispose()
+-  this.contourPositions.dispose()
+-  this.contourShader.dispose()
++function TextSprites(
++  gl,
++  shader,
++  buffer,
++  vao) {
++  this.gl           = gl
++  this.shader       = shader
++  this.buffer       = buffer
++  this.vao          = vao
++  this.tickOffset   =
++  this.tickCount    =
++  this.labelOffset  =
++  this.labelCount   = null
+ }
+ 
+-function createMeshShader(gl) {
+-  var shader = createShader(gl, meshShader)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location    = 2
+-  shader.attributes.uv.location       = 3
+-  shader.attributes.normal.location   = 4
+-  return shader
+-}
++var proto = TextSprites.prototype
+ 
+-function createWireShader(gl) {
+-  var shader = createShader(gl, wireShader)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location    = 2
+-  shader.attributes.uv.location       = 3
+-  return shader
++//Bind textures for rendering
++var SHAPE = [0,0]
++proto.bind = function(model, view, projection, pixelScale) {
++  this.vao.bind()
++  this.shader.bind()
++  var uniforms = this.shader.uniforms
++  uniforms.model = model
++  uniforms.view = view
++  uniforms.projection = projection
++  uniforms.pixelScale = pixelScale
++  SHAPE[0] = this.gl.drawingBufferWidth
++  SHAPE[1] = this.gl.drawingBufferHeight
++  this.shader.uniforms.resolution = SHAPE
+ }
+ 
+-function createPointShader(gl) {
+-  var shader = createShader(gl, pointShader)
+-  shader.attributes.position.location  = 0
+-  shader.attributes.color.location     = 2
+-  shader.attributes.uv.location        = 3
+-  shader.attributes.pointSize.location = 4
+-  return shader
++proto.update = function(bounds, labels, labelFont, ticks, tickFont) {
++  var gl = this.gl
++  var data = []
++
++  function addItem(t, text, font, size) {
++    var fontcache = __TEXT_CACHE[font]
++    if(!fontcache) {
++      fontcache = __TEXT_CACHE[font] = {}
++    }
++    var mesh = fontcache[text]
++    if(!mesh) {
++      mesh = fontcache[text] = tryVectorizeText(text, {
++        triangles: true,
++        font: font,
++        textAlign: 'center',
++        textBaseline: 'middle'
++      })
++    }
++    var scale = (size || 12) / 12
++    var positions = mesh.positions
++    var cells = mesh.cells
++    var lo = [ Infinity, Infinity]
++    var hi = [-Infinity,-Infinity]
++    for(var i=0, nc=cells.length; i<nc; ++i) {
++      var c = cells[i]
++      for(var j=2; j>=0; --j) {
++        var p = positions[c[j]]
++        data.push(scale*p[0], -scale*p[1], t)
++      }
++    }
++  }
++
++  //Generate sprites for all 3 axes, store data in texture atlases
++  var tickOffset  = [0,0,0]
++  var tickCount   = [0,0,0]
++  var labelOffset = [0,0,0]
++  var labelCount  = [0,0,0]
++  for(var d=0; d<3; ++d) {
++
++    //Generate label
++    labelOffset[d] = (data.length/VERTEX_SIZE)|0
++    addItem(0.5*(bounds[0][d]+bounds[1][d]), labels[d], labelFont)
++    labelCount[d] = ((data.length/VERTEX_SIZE)|0) - labelOffset[d]
++
++    //Generate sprites for tick marks
++    tickOffset[d] = (data.length/VERTEX_SIZE)|0
++    for(var i=0; i<ticks[d].length; ++i) {
++      if(!ticks[d][i].text) {
++        continue
++      }
++      addItem(
++        ticks[d][i].x,
++        ticks[d][i].text,
++        ticks[d][i].font || tickFont,
++        ticks[d][i].fontSize || 12)
++    }
++    tickCount[d] = ((data.length/VERTEX_SIZE)|0) - tickOffset[d]
++  }
++
++  this.buffer.update(data)
++  this.tickOffset = tickOffset
++  this.tickCount = tickCount
++  this.labelOffset = labelOffset
++  this.labelCount = labelCount
+ }
+ 
+-function createPickShader(gl) {
+-  var shader = createShader(gl, pickShader)
+-  shader.attributes.position.location = 0
+-  shader.attributes.id.location       = 1
+-  return shader
++//Draws the tick marks for an axis
++var AXIS = [0,0,0]
++proto.drawTicks = function(d, scale, angle, offset, color) {
++  if(!this.tickCount[d]) {
++    return
++  }
++
++  var v = AXIS
++  v[0] = v[1] = v[2] = 0
++  v[d] = 1
++  this.shader.uniforms.axis = v
++  this.shader.uniforms.color = color
++  this.shader.uniforms.angle = angle
++  this.shader.uniforms.scale = scale
++  this.shader.uniforms.offset = offset
++  this.vao.draw(this.gl.TRIANGLES, this.tickCount[d], this.tickOffset[d])
+ }
+ 
+-function createPointPickShader(gl) {
+-  var shader = createShader(gl, pointPickShader)
+-  shader.attributes.position.location  = 0
+-  shader.attributes.id.location        = 1
+-  shader.attributes.pointSize.location = 4
+-  return shader
++//Draws the text label for an axis
++var ZERO = [0,0,0]
++proto.drawLabel = function(d, scale, angle, offset, color) {
++  if(!this.labelCount[d]) {
++    return
++  }
++  this.shader.uniforms.axis = ZERO
++  this.shader.uniforms.color = color
++  this.shader.uniforms.angle = angle
++  this.shader.uniforms.scale = scale
++  this.shader.uniforms.offset = offset
++  this.vao.draw(this.gl.TRIANGLES, this.labelCount[d], this.labelOffset[d])
+ }
+ 
+-function createContourShader(gl) {
+-  var shader = createShader(gl, contourShader)
+-  shader.attributes.position.location = 0
+-  return shader
++//Releases all resources attached to this object
++proto.dispose = function() {
++  this.shader.dispose()
++  this.vao.dispose()
++  this.buffer.dispose()
+ }
+ 
+-function createSimplicialMesh(params) {
+-  var gl = params.gl
+-
+-  var triShader       = createMeshShader(gl)
+-  var lineShader      = createWireShader(gl)
+-  var pointShader     = createPointShader(gl)
+-  var pickShader      = createPickShader(gl)
+-  var pointPickShader = createPointPickShader(gl)
+-  var contourShader   = createContourShader(gl)
+-
+-  var meshTexture       = createTexture(gl,
+-    ndarray(new Uint8Array([255,255,255,255]), [1,1,4]))
+-  meshTexture.generateMipmap()
+-  meshTexture.minFilter = gl.LINEAR_MIPMAP_LINEAR
+-  meshTexture.magFilter = gl.LINEAR
+-
+-  var trianglePositions = createBuffer(gl)
+-  var triangleColors    = createBuffer(gl)
+-  var triangleUVs       = createBuffer(gl)
+-  var triangleNormals   = createBuffer(gl)
+-  var triangleIds       = createBuffer(gl)
+-  var triangleVAO       = createVAO(gl, [
+-    { buffer: trianglePositions,
+-      type: gl.FLOAT,
+-      size: 3
+-    },
+-    { buffer: triangleIds,
+-      type: gl.UNSIGNED_BYTE,
+-      size: 4,
+-      normalized: true
+-    },
+-    { buffer: triangleColors,
+-      type: gl.FLOAT,
+-      size: 4
+-    },
+-    { buffer: triangleUVs,
+-      type: gl.FLOAT,
+-      size: 2
+-    },
+-    { buffer: triangleNormals,
+-      type: gl.FLOAT,
+-      size: 3
++function tryVectorizeText(text, options) {
++  try {
++    return vectorizeText(text, options)
++  } catch(e) {
++    console.warn('error vectorizing text:', e)
++    return {
++      cells: [],
++      positions: []
+     }
+-  ])
++  }
++}
+ 
+-  var edgePositions = createBuffer(gl)
+-  var edgeColors    = createBuffer(gl)
+-  var edgeUVs       = createBuffer(gl)
+-  var edgeIds       = createBuffer(gl)
+-  var edgeVAO       = createVAO(gl, [
+-    { buffer: edgePositions,
+-      type: gl.FLOAT,
+-      size: 3
+-    },
+-    { buffer: edgeIds,
+-      type: gl.UNSIGNED_BYTE,
+-      size: 4,
+-      normalized: true
+-    },
+-    { buffer: edgeColors,
+-      type: gl.FLOAT,
+-      size: 4
+-    },
+-    { buffer: edgeUVs,
+-      type: gl.FLOAT,
+-      size: 2
+-    }
+-  ])
++function createTextSprites(
++    gl,
++    bounds,
++    labels,
++    labelFont,
++    ticks,
++    tickFont) {
+ 
+-  var pointPositions  = createBuffer(gl)
+-  var pointColors     = createBuffer(gl)
+-  var pointUVs        = createBuffer(gl)
+-  var pointSizes      = createBuffer(gl)
+-  var pointIds        = createBuffer(gl)
+-  var pointVAO        = createVAO(gl, [
+-    { buffer: pointPositions,
+-      type: gl.FLOAT,
+-      size: 3
+-    },
+-    { buffer: pointIds,
+-      type: gl.UNSIGNED_BYTE,
+-      size: 4,
+-      normalized: true
+-    },
+-    { buffer: pointColors,
+-      type: gl.FLOAT,
+-      size: 4
+-    },
+-    { buffer: pointUVs,
+-      type: gl.FLOAT,
+-      size: 2
+-    },
+-    { buffer: pointSizes,
+-      type: gl.FLOAT,
+-      size: 1
++  var buffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++    { "buffer": buffer,
++      "size": 3
+     }
+   ])
+ 
+-  var contourPositions = createBuffer(gl)
+-  var contourVAO       = createVAO(gl, [
+-    { buffer: contourPositions,
+-      type:   gl.FLOAT,
+-      size:   3
+-    }])
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
+ 
+-  var mesh = new SimplicialMesh(gl
+-    , meshTexture
+-    , triShader
+-    , lineShader
+-    , pointShader
+-    , pickShader
+-    , pointPickShader
+-    , contourShader
+-    , trianglePositions
+-    , triangleIds
+-    , triangleColors
+-    , triangleUVs
+-    , triangleNormals
+-    , triangleVAO
+-    , edgePositions
+-    , edgeIds
+-    , edgeColors
+-    , edgeUVs
+-    , edgeVAO
+-    , pointPositions
+-    , pointIds
+-    , pointColors
+-    , pointUVs
+-    , pointSizes
+-    , pointVAO
+-    , contourPositions
+-    , contourVAO)
++  var result = new TextSprites(
++    gl,
++    shader,
++    buffer,
++    vao)
+ 
+-  mesh.update(params)
++  result.update(bounds, labels, labelFont, ticks, tickFont)
+ 
+-  return mesh
++  return result
+ }
+ 
+-module.exports = createSimplicialMesh
+-
+-},{"./lib/closest-point":154,"./lib/shaders":155,"colormap":106,"gl-buffer":124,"gl-mat4/invert":143,"gl-mat4/multiply":145,"gl-shader":203,"gl-texture2d":228,"gl-vao":232,"ndarray":433,"normals":158,"simplicial-complex-contour":160,"typedarray-pool":458}],157:[function(require,module,exports){
++}).call(this,require('_process'))
++},{"./shaders":117,"_process":403,"gl-buffer":121,"gl-vao":206,"vectorize-text":460}],119:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = barycentric
+-
+-var solve = require('robust-linear-solve')
++exports.create   = defaultTicks
++exports.equal    = ticksEqual
+ 
+-function reduce(x) {
+-  var r = 0
+-  for(var i=0; i<x.length; ++i) {
+-    r += x[i]
++function prettyPrint(spacing, i) {
++  var stepStr = spacing + ""
++  var u = stepStr.indexOf(".")
++  var sigFigs = 0
++  if(u >= 0) {
++    sigFigs = stepStr.length - u - 1
+   }
+-  return r
+-}
+-
+-function barycentric(simplex, point) {
+-  var d = point.length
+-  var A = new Array(d+1)
+-  for(var i=0; i<d; ++i) {
+-    var row = new Array(d+1)
+-    for(var j=0; j<=d; ++j) {
+-      row[j] = simplex[j][i]
+-    }
+-    A[i] = row
++  var shift = Math.pow(10, sigFigs)
++  var x = Math.round(spacing * i * shift)
++  var xstr = x + ""
++  if(xstr.indexOf("e") >= 0) {
++    return xstr
+   }
+-  A[d] = new Array(d+1)
+-  for(var i=0; i<=d; ++i) {
+-    A[d][i] = 1
++  var xi = x / shift, xf = x % shift
++  if(x < 0) {
++    xi = -Math.ceil(xi)|0
++    xf = (-xf)|0
++  } else {
++    xi = Math.floor(xi)|0
++    xf = xf|0
+   }
+-
+-  var b = new Array(d+1)
+-  for(var i=0; i<d; ++i) {
+-    b[i] = point[i]
++  var xis = "" + xi 
++  if(x < 0) {
++    xis = "-" + xis
+   }
+-  b[d] = 1.0
+-
+-  var x = solve(A, b)
+-  var w = reduce(x[d+1])
+-  
+-  if(w === 0) {
+-    w = 1.0
++  if(sigFigs) {
++    var xs = "" + xf
++    while(xs.length < sigFigs) {
++      xs = "0" + xs
++    }
++    return xis + "." + xs
++  } else {
++    return xis
+   }
+-  var y = new Array(d+1)
+-  for(var i=0; i<=d; ++i) {
+-    y[i] = reduce(x[i]) / w
++}
++
++function defaultTicks(bounds, tickSpacing) {
++  var array = []
++  for(var d=0; d<3; ++d) {
++    var ticks = []
++    var m = 0.5*(bounds[0][d]+bounds[1][d])
++    for(var t=0; t*tickSpacing[d]<=bounds[1][d]; ++t) {
++      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
++    }
++    for(var t=-1; t*tickSpacing[d]>=bounds[0][d]; --t) {
++      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
++    }
++    array.push(ticks)
+   }
+-  return y
++  return array
+ }
+-},{"robust-linear-solve":436}],158:[function(require,module,exports){
+-var DEFAULT_NORMALS_EPSILON = 1e-6;
+-var DEFAULT_FACE_EPSILON = 1e-6;
+ 
+-//Estimate the vertex normals of a mesh
+-exports.vertexNormals = function(faces, positions, specifiedEpsilon) {
++function ticksEqual(ticksA, ticksB) {
++  for(var i=0; i<3; ++i) {
++    if(ticksA[i].length !== ticksB[i].length) {
++      return false
++    }
++    for(var j=0; j<ticksA[i].length; ++j) {
++      var a = ticksA[i][j]
++      var b = ticksB[i][j]
++      if(a.x !== b.x || a.text !== b.text) {
++        return false
++      }
++    }
++  }
++  return true
++}
++},{}],120:[function(require,module,exports){
++"use strict"
+ 
+-  var N         = positions.length;
+-  var normals   = new Array(N);
+-  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_NORMALS_EPSILON : specifiedEpsilon;
++module.exports = axesProperties
+ 
+-  //Initialize normal array
+-  for(var i=0; i<N; ++i) {
+-    normals[i] = [0.0, 0.0, 0.0];
+-  }
++var getPlanes   = require("extract-frustum-planes")
++var splitPoly   = require("split-polygon")
++var cubeParams  = require("./lib/cube.js")
++var m4mul       = require("gl-mat4/multiply")
++var m4transpose = require("gl-mat4/transpose")
++var v4transformMat4 = require("gl-vec4/transformMat4")
+ 
+-  //Walk over all the faces and add per-vertex contribution to normal weights
+-  for(var i=0; i<faces.length; ++i) {
+-    var f = faces[i];
+-    var p = 0;
+-    var c = f[f.length-1];
+-    var n = f[0];
+-    for(var j=0; j<f.length; ++j) {
++var identity    = new Float32Array([
++    1, 0, 0, 0,
++    0, 1, 0, 0,
++    0, 0, 1, 0,
++    0, 0, 0, 1
++  ])
+ 
+-      //Shift indices back
+-      p = c;
+-      c = n;
+-      n = f[(j+1) % f.length];
++var mvp         = new Float32Array(16)
+ 
+-      var v0 = positions[p];
+-      var v1 = positions[c];
+-      var v2 = positions[n];
++function AxesRange3D(lo, hi, pixelsPerDataUnit) {
++  this.lo = lo
++  this.hi = hi
++  this.pixelsPerDataUnit = pixelsPerDataUnit
++}
+ 
+-      //Compute infineteismal arcs
+-      var d01 = new Array(3);
+-      var m01 = 0.0;
+-      var d21 = new Array(3);
+-      var m21 = 0.0;
+-      for(var k=0; k<3; ++k) {
+-        d01[k] = v0[k]  - v1[k];
+-        m01   += d01[k] * d01[k];
+-        d21[k] = v2[k]  - v1[k];
+-        m21   += d21[k] * d21[k];
+-      }
++var SCRATCH_P = [0,0,0,1]
++var SCRATCH_Q = [0,0,0,1]
+ 
+-      //Accumulate values in normal
+-      if(m01 * m21 > epsilon) {
+-        var norm = normals[c];
+-        var w = 1.0 / Math.sqrt(m01 * m21);
+-        for(var k=0; k<3; ++k) {
+-          var u = (k+1)%3;
+-          var v = (k+2)%3;
+-          norm[k] += w * (d21[u] * d01[v] - d21[v] * d01[u]);
+-        }
+-      }
++function gradient(result, M, v, width, height) {
++  for(var i=0; i<3; ++i) {
++    var p = SCRATCH_P
++    var q = SCRATCH_Q
++    for(var j=0; j<3; ++j) {
++      q[j] = p[j] = v[j]
+     }
+-  }
++    q[3] = p[3] = 1
+ 
+-  //Scale all normals to unit length
+-  for(var i=0; i<N; ++i) {
+-    var norm = normals[i];
+-    var m = 0.0;
+-    for(var k=0; k<3; ++k) {
+-      m += norm[k] * norm[k];
++    q[i] += 1
++    v4transformMat4(q, q, M)
++    if(q[3] < 0) {
++      result[i] = Infinity
+     }
+-    if(m > epsilon) {
+-      var w = 1.0 / Math.sqrt(m);
+-      for(var k=0; k<3; ++k) {
+-        norm[k] *= w;
+-      }
+-    } else {
+-      for(var k=0; k<3; ++k) {
+-        norm[k] = 0.0;
+-      }
++
++    p[i] -= 1
++    v4transformMat4(p, p, M)
++    if(p[3] < 0) {
++      result[i] = Infinity
+     }
+-  }
+ 
+-  //Return the resulting set of patches
+-  return normals;
++    var dx = (p[0]/p[3] - q[0]/q[3]) * width
++    var dy = (p[1]/p[3] - q[1]/q[3]) * height
++
++    result[i] = 0.25 * Math.sqrt(dx*dx + dy*dy)
++  }
++  return result
+ }
+ 
+-//Compute face normals of a mesh
+-exports.faceNormals = function(faces, positions, specifiedEpsilon) {
++var RANGES = [
++  new AxesRange3D(Infinity, -Infinity, Infinity),
++  new AxesRange3D(Infinity, -Infinity, Infinity),
++  new AxesRange3D(Infinity, -Infinity, Infinity)
++]
+ 
+-  var N         = faces.length;
+-  var normals   = new Array(N);
+-  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_FACE_EPSILON : specifiedEpsilon;
++var SCRATCH_X = [0,0,0]
+ 
+-  for(var i=0; i<N; ++i) {
+-    var f = faces[i];
+-    var pos = new Array(3);
+-    for(var j=0; j<3; ++j) {
+-      pos[j] = positions[f[j]];
+-    }
++function axesProperties(axes, camera, width, height, params) {
++  var model       = camera.model || identity
++  var view        = camera.view || identity
++  var projection  = camera.projection || identity
++  var bounds      = axes.bounds
++  var params      = params || cubeParams(model, view, projection, bounds)
++  var axis        = params.axis
++  var edges       = params.edges
+ 
+-    var d01 = new Array(3);
+-    var d21 = new Array(3);
+-    for(var j=0; j<3; ++j) {
+-      d01[j] = pos[1][j] - pos[0][j];
+-      d21[j] = pos[2][j] - pos[0][j];
+-    }
++  m4mul(mvp, view, model)
++  m4mul(mvp, projection, mvp)
+ 
+-    var n = new Array(3);
+-    var l = 0.0;
+-    for(var j=0; j<3; ++j) {
+-      var u = (j+1)%3;
+-      var v = (j+2)%3;
+-      n[j] = d01[u] * d21[v] - d01[v] * d21[u];
+-      l += n[j] * n[j];
+-    }
+-    if(l > epsilon) {
+-      l = 1.0 / Math.sqrt(l);
+-    } else {
+-      l = 0.0;
+-    }
+-    for(var j=0; j<3; ++j) {
+-      n[j] *= l;
++  //Calculate the following properties for each axis:
++  //
++  // * lo - start of visible range for each axis in tick coordinates
++  // * hi - end of visible range for each axis in tick coordinates
++  // * ticksPerPixel - pixel density of tick marks for the axis
++  //
++  var ranges = RANGES
++  for(var i=0; i<3; ++i) {
++    ranges[i].lo = Infinity
++    ranges[i].hi = -Infinity
++    ranges[i].pixelsPerDataUnit = Infinity
++  }
++
++  //Compute frustum planes, intersect with box
++  var frustum = getPlanes(m4transpose(mvp, mvp))
++  m4transpose(mvp, mvp)
++
++  //Loop over vertices of viewable box
++  for(var d=0; d<3; ++d) {
++    var u = (d+1)%3
++    var v = (d+2)%3
++    var x = SCRATCH_X
++i_loop:
++    for(var i=0; i<2; ++i) {
++      var poly = []
++
++      if((axis[d] < 0) === !!i) {
++        continue
++      }
++
++      x[d] = bounds[i][d]
++      for(var j=0; j<2; ++j) {
++        x[u] = bounds[j^i][u]
++        for(var k=0; k<2; ++k) {
++          x[v] = bounds[k^j^i][v]
++          poly.push(x.slice())
++        }
++      }
++      for(var j=0; j<frustum.length; ++j) {
++        if(poly.length === 0) {
++          continue i_loop
++        }
++        poly = splitPoly.positive(poly, frustum[j])
++      }
++
++      //Loop over vertices of polygon to find extremal points
++      for(var j=0; j<poly.length; ++j) {
++        var v = poly[j]
++        var grad = gradient(SCRATCH_X, mvp, v, width, height)
++        for(var k=0; k<3; ++k) {
++          ranges[k].lo = Math.min(ranges[k].lo, v[k])
++          ranges[k].hi = Math.max(ranges[k].hi, v[k])
++          if(k !== d) {
++            ranges[k].pixelsPerDataUnit = Math.min(ranges[k].pixelsPerDataUnit, Math.abs(grad[k]))
++          }
++        }
++      }
+     }
+-    normals[i] = n;
+   }
+-  return normals;
++
++  return ranges
++}
++
++},{"./lib/cube.js":115,"extract-frustum-planes":97,"gl-mat4/multiply":144,"gl-mat4/transpose":152,"gl-vec4/transformMat4":212,"split-polygon":436}],121:[function(require,module,exports){
++"use strict"
++
++var pool = require("typedarray-pool")
++var ops = require("ndarray-ops")
++var ndarray = require("ndarray")
++
++var SUPPORTED_TYPES = [
++  "uint8",
++  "uint8_clamped",
++  "uint16",
++  "uint32",
++  "int8",
++  "int16",
++  "int32",
++  "float32" ]
++
++function GLBuffer(gl, type, handle, length, usage) {
++  this.gl = gl
++  this.type = type
++  this.handle = handle
++  this.length = length
++  this.usage = usage
+ }
+ 
++var proto = GLBuffer.prototype
+ 
++proto.bind = function() {
++  this.gl.bindBuffer(this.type, this.handle)
++}
+ 
+-},{}],159:[function(require,module,exports){
+-//Optimized version for triangle closest point
+-// Based on Eberly's WildMagick codes
+-// http://www.geometrictools.com/LibMathematics/Distance/Distance.html
+-"use strict";
++proto.unbind = function() {
++  this.gl.bindBuffer(this.type, null)
++}
+ 
+-var diff = new Float64Array(4);
+-var edge0 = new Float64Array(4);
+-var edge1 = new Float64Array(4);
++proto.dispose = function() {
++  this.gl.deleteBuffer(this.handle)
++}
+ 
+-function closestPoint2d(V0, V1, V2, point, result) {
+-  //Reallocate buffers if necessary
+-  if(diff.length < point.length) {
+-    diff = new Float64Array(point.length);
+-    edge0 = new Float64Array(point.length);
+-    edge1 = new Float64Array(point.length);
++function updateTypeArray(gl, type, len, usage, data, offset) {
++  var dataLen = data.length * data.BYTES_PER_ELEMENT
++  if(offset < 0) {
++    gl.bufferData(type, data, usage)
++    return dataLen
+   }
+-  //Compute edges
+-  for(var i=0; i<point.length; ++i) {
+-    diff[i]  = V0[i] - point[i];
+-    edge0[i] = V1[i] - V0[i];
+-    edge1[i] = V2[i] - V0[i];
++  if(dataLen + offset > len) {
++    throw new Error("gl-buffer: If resizing buffer, must not specify offset")
+   }
+-  //Compute coefficients for quadratic func
+-  var a00 = 0.0
+-    , a01 = 0.0
+-    , a11 = 0.0
+-    , b0  = 0.0
+-    , b1  = 0.0
+-    , c   = 0.0;
+-  for(var i=0; i<point.length; ++i) {
+-    var e0 = edge0[i]
+-      , e1 = edge1[i]
+-      , d  = diff[i];
+-    a00 += e0 * e0;
+-    a01 += e0 * e1;
+-    a11 += e1 * e1;
+-    b0  += d * e0;
+-    b1  += d * e1;
+-    c   += d * d;
++  gl.bufferSubData(type, offset, data)
++  return len
++}
++
++function makeScratchTypeArray(array, dtype) {
++  var res = pool.malloc(array.length, dtype)
++  var n = array.length
++  for(var i=0; i<n; ++i) {
++    res[i] = array[i]
+   }
+-  //Compute determinant/coeffs
+-  var det = Math.abs(a00*a11 - a01*a01);
+-  var s   = a01*b1 - a11*b0;
+-  var t   = a01*b0 - a00*b1;
+-  var sqrDistance;
+-  //Hardcoded Voronoi diagram classification
+-  if (s + t <= det) {
+-    if (s < 0) {
+-      if (t < 0) { // region 4
+-        if (b0 < 0) {
+-          t = 0;
+-          if (-b0 >= a00) {
+-            s = 1.0;
+-            sqrDistance = a00 + 2.0*b0 + c;
+-          } else {
+-            s = -b0/a00;
+-            sqrDistance = b0*s + c;
+-          }
+-        } else {
+-          s = 0;
+-          if (b1 >= 0) {
+-            t = 0;
+-            sqrDistance = c;
+-          } else if (-b1 >= a11) {
+-            t = 1;
+-            sqrDistance = a11 + 2.0*b1 + c;
+-          } else {
+-            t = -b1/a11;
+-            sqrDistance = b1*t + c;
+-          }
+-        }
+-      } else {  // region 3
+-        s = 0;
+-        if (b1 >= 0) {
+-          t = 0;
+-          sqrDistance = c;
+-        } else if (-b1 >= a11) {
+-          t = 1;
+-          sqrDistance = a11 + 2.0*b1 + c;
+-        } else {
+-          t = -b1/a11;
+-          sqrDistance = b1*t + c;
+-        }
+-      }
+-    } else if (t < 0) { // region 5
+-      t = 0;
+-      if (b0 >= 0) {
+-        s = 0;
+-        sqrDistance = c;
+-      } else if (-b0 >= a00) {
+-        s = 1;
+-        sqrDistance = a00 + 2.0*b0 + c;
+-      } else {
+-        s = -b0/a00;
+-        sqrDistance = b0*s + c;
+-      }
+-    } else {  // region 0
+-      // minimum at interior point
+-      var invDet = 1.0 / det;
+-      s *= invDet;
+-      t *= invDet;
+-      sqrDistance = s*(a00*s + a01*t + 2.0*b0) + t*(a01*s + a11*t + 2.0*b1) + c;
++  return res
++}
++
++function isPacked(shape, stride) {
++  var n = 1
++  for(var i=stride.length-1; i>=0; --i) {
++    if(stride[i] !== n) {
++      return false
+     }
+-  } else {
+-    var tmp0, tmp1, numer, denom;
+-    
+-    if (s < 0) {  // region 2
+-      tmp0 = a01 + b0;
+-      tmp1 = a11 + b1;
+-      if (tmp1 > tmp0) {
+-        numer = tmp1 - tmp0;
+-        denom = a00 - 2.0*a01 + a11;
+-        if (numer >= denom) {
+-          s = 1;
+-          t = 0;
+-          sqrDistance = a00 + 2.0*b0 + c;
+-        } else {
+-          s = numer/denom;
+-          t = 1 - s;
+-          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
+-          t*(a01*s + a11*t + 2.0*b1) + c;
+-        }
++    n *= shape[i]
++  }
++  return true
++}
++
++proto.update = function(array, offset) {
++  if(typeof offset !== "number") {
++    offset = -1
++  }
++  this.bind()
++  if(typeof array === "object" && typeof array.shape !== "undefined") { //ndarray
++    var dtype = array.dtype
++    if(SUPPORTED_TYPES.indexOf(dtype) < 0) {
++      dtype = "float32"
++    }
++    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
++      var ext = gl.getExtension('OES_element_index_uint')
++      if(ext && dtype !== "uint16") {
++        dtype = "uint32"
+       } else {
+-        s = 0;
+-        if (tmp1 <= 0) {
+-          t = 1;
+-          sqrDistance = a11 + 2.0*b1 + c;
+-        } else if (b1 >= 0) {
+-          t = 0;
+-          sqrDistance = c;
+-        } else {
+-          t = -b1/a11;
+-          sqrDistance = b1*t + c;
+-        }
++        dtype = "uint16"
+       }
+-    } else if (t < 0) {  // region 6
+-      tmp0 = a01 + b1;
+-      tmp1 = a00 + b0;
+-      if (tmp1 > tmp0) {
+-        numer = tmp1 - tmp0;
+-        denom = a00 - 2.0*a01 + a11;
+-        if (numer >= denom) {
+-          t = 1;
+-          s = 0;
+-          sqrDistance = a11 + 2.0*b1 + c;
+-        } else {
+-          t = numer/denom;
+-          s = 1 - t;
+-          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
+-          t*(a01*s + a11*t + 2.0*b1) + c;
+-        }
++    }
++    if(dtype === array.dtype && isPacked(array.shape, array.stride)) {
++      if(array.offset === 0 && array.data.length === array.shape[0]) {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data, offset)
+       } else {
+-        t = 0;
+-        if (tmp1 <= 0) {
+-          s = 1;
+-          sqrDistance = a00 + 2.0*b0 + c;
+-        } else if (b0 >= 0) {
+-          s = 0;
+-          sqrDistance = c;
+-        } else {
+-          s = -b0/a00;
+-          sqrDistance = b0*s + c;
+-        }
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data.subarray(array.offset, array.shape[0]), offset)
+       }
+-    } else {  // region 1
+-      numer = a11 + b1 - a01 - b0;
+-      if (numer <= 0) {
+-        s = 0;
+-        t = 1;
+-        sqrDistance = a11 + 2.0*b1 + c;
++    } else {
++      var tmp = pool.malloc(array.size, dtype)
++      var ndt = ndarray(tmp, array.shape)
++      ops.assign(ndt, array)
++      if(offset < 0) {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp, offset)
+       } else {
+-        denom = a00 - 2.0*a01 + a11;
+-        if (numer >= denom) {
+-          s = 1;
+-          t = 0;
+-          sqrDistance = a00 + 2.0*b0 + c;
+-        } else {
+-          s = numer/denom;
+-          t = 1 - s;
+-          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
+-          t*(a01*s + a11*t + 2.0*b1) + c;
+-        }
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp.subarray(0, array.size), offset)
+       }
++      pool.free(tmp)
++    }
++  } else if(Array.isArray(array)) { //Vanilla array
++    var t
++    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
++      t = makeScratchTypeArray(array, "uint16")
++    } else {
++      t = makeScratchTypeArray(array, "float32")
++    }
++    if(offset < 0) {
++      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t, offset)
++    } else {
++      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t.subarray(0, array.length), offset)
++    }
++    pool.free(t)
++  } else if(typeof array === "object" && typeof array.length === "number") { //Typed array
++    this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array, offset)
++  } else if(typeof array === "number" || array === undefined) { //Number/default
++    if(offset >= 0) {
++      throw new Error("gl-buffer: Cannot specify offset when resizing buffer")
+     }
++    array = array | 0
++    if(array <= 0) {
++      array = 1
++    }
++    this.gl.bufferData(this.type, array|0, this.usage)
++    this.length = array
++  } else { //Error, case should not happen
++    throw new Error("gl-buffer: Invalid data type")
+   }
+-  var u = 1.0 - s - t;
+-  for(var i=0; i<point.length; ++i) {
+-    result[i] = u * V0[i] + s * V1[i] + t * V2[i];
++}
++
++function createBuffer(gl, data, type, usage) {
++  type = type || gl.ARRAY_BUFFER
++  usage = usage || gl.DYNAMIC_DRAW
++  if(type !== gl.ARRAY_BUFFER && type !== gl.ELEMENT_ARRAY_BUFFER) {
++    throw new Error("gl-buffer: Invalid type for webgl buffer, must be either gl.ARRAY_BUFFER or gl.ELEMENT_ARRAY_BUFFER")
+   }
+-  if(sqrDistance < 0) {
+-    return 0;
++  if(usage !== gl.DYNAMIC_DRAW && usage !== gl.STATIC_DRAW && usage !== gl.STREAM_DRAW) {
++    throw new Error("gl-buffer: Invalid usage for buffer, must be either gl.DYNAMIC_DRAW, gl.STATIC_DRAW or gl.STREAM_DRAW")
+   }
+-  return sqrDistance;
++  var handle = gl.createBuffer()
++  var result = new GLBuffer(gl, type, handle, 0, usage)
++  result.update(data)
++  return result
++}
++
++module.exports = createBuffer
++
++},{"ndarray":385,"ndarray-ops":379,"typedarray-pool":449}],122:[function(require,module,exports){
++module.exports = {
++  0: 'NONE',
++  1: 'ONE',
++  2: 'LINE_LOOP',
++  3: 'LINE_STRIP',
++  4: 'TRIANGLES',
++  5: 'TRIANGLE_STRIP',
++  6: 'TRIANGLE_FAN',
++  256: 'DEPTH_BUFFER_BIT',
++  512: 'NEVER',
++  513: 'LESS',
++  514: 'EQUAL',
++  515: 'LEQUAL',
++  516: 'GREATER',
++  517: 'NOTEQUAL',
++  518: 'GEQUAL',
++  519: 'ALWAYS',
++  768: 'SRC_COLOR',
++  769: 'ONE_MINUS_SRC_COLOR',
++  770: 'SRC_ALPHA',
++  771: 'ONE_MINUS_SRC_ALPHA',
++  772: 'DST_ALPHA',
++  773: 'ONE_MINUS_DST_ALPHA',
++  774: 'DST_COLOR',
++  775: 'ONE_MINUS_DST_COLOR',
++  776: 'SRC_ALPHA_SATURATE',
++  1024: 'STENCIL_BUFFER_BIT',
++  1028: 'FRONT',
++  1029: 'BACK',
++  1032: 'FRONT_AND_BACK',
++  1280: 'INVALID_ENUM',
++  1281: 'INVALID_VALUE',
++  1282: 'INVALID_OPERATION',
++  1285: 'OUT_OF_MEMORY',
++  1286: 'INVALID_FRAMEBUFFER_OPERATION',
++  2304: 'CW',
++  2305: 'CCW',
++  2849: 'LINE_WIDTH',
++  2884: 'CULL_FACE',
++  2885: 'CULL_FACE_MODE',
++  2886: 'FRONT_FACE',
++  2928: 'DEPTH_RANGE',
++  2929: 'DEPTH_TEST',
++  2930: 'DEPTH_WRITEMASK',
++  2931: 'DEPTH_CLEAR_VALUE',
++  2932: 'DEPTH_FUNC',
++  2960: 'STENCIL_TEST',
++  2961: 'STENCIL_CLEAR_VALUE',
++  2962: 'STENCIL_FUNC',
++  2963: 'STENCIL_VALUE_MASK',
++  2964: 'STENCIL_FAIL',
++  2965: 'STENCIL_PASS_DEPTH_FAIL',
++  2966: 'STENCIL_PASS_DEPTH_PASS',
++  2967: 'STENCIL_REF',
++  2968: 'STENCIL_WRITEMASK',
++  2978: 'VIEWPORT',
++  3024: 'DITHER',
++  3042: 'BLEND',
++  3088: 'SCISSOR_BOX',
++  3089: 'SCISSOR_TEST',
++  3106: 'COLOR_CLEAR_VALUE',
++  3107: 'COLOR_WRITEMASK',
++  3317: 'UNPACK_ALIGNMENT',
++  3333: 'PACK_ALIGNMENT',
++  3379: 'MAX_TEXTURE_SIZE',
++  3386: 'MAX_VIEWPORT_DIMS',
++  3408: 'SUBPIXEL_BITS',
++  3410: 'RED_BITS',
++  3411: 'GREEN_BITS',
++  3412: 'BLUE_BITS',
++  3413: 'ALPHA_BITS',
++  3414: 'DEPTH_BITS',
++  3415: 'STENCIL_BITS',
++  3553: 'TEXTURE_2D',
++  4352: 'DONT_CARE',
++  4353: 'FASTEST',
++  4354: 'NICEST',
++  5120: 'BYTE',
++  5121: 'UNSIGNED_BYTE',
++  5122: 'SHORT',
++  5123: 'UNSIGNED_SHORT',
++  5124: 'INT',
++  5125: 'UNSIGNED_INT',
++  5126: 'FLOAT',
++  5386: 'INVERT',
++  5890: 'TEXTURE',
++  6401: 'STENCIL_INDEX',
++  6402: 'DEPTH_COMPONENT',
++  6406: 'ALPHA',
++  6407: 'RGB',
++  6408: 'RGBA',
++  6409: 'LUMINANCE',
++  6410: 'LUMINANCE_ALPHA',
++  7680: 'KEEP',
++  7681: 'REPLACE',
++  7682: 'INCR',
++  7683: 'DECR',
++  7936: 'VENDOR',
++  7937: 'RENDERER',
++  7938: 'VERSION',
++  9728: 'NEAREST',
++  9729: 'LINEAR',
++  9984: 'NEAREST_MIPMAP_NEAREST',
++  9985: 'LINEAR_MIPMAP_NEAREST',
++  9986: 'NEAREST_MIPMAP_LINEAR',
++  9987: 'LINEAR_MIPMAP_LINEAR',
++  10240: 'TEXTURE_MAG_FILTER',
++  10241: 'TEXTURE_MIN_FILTER',
++  10242: 'TEXTURE_WRAP_S',
++  10243: 'TEXTURE_WRAP_T',
++  10497: 'REPEAT',
++  10752: 'POLYGON_OFFSET_UNITS',
++  16384: 'COLOR_BUFFER_BIT',
++  32769: 'CONSTANT_COLOR',
++  32770: 'ONE_MINUS_CONSTANT_COLOR',
++  32771: 'CONSTANT_ALPHA',
++  32772: 'ONE_MINUS_CONSTANT_ALPHA',
++  32773: 'BLEND_COLOR',
++  32774: 'FUNC_ADD',
++  32777: 'BLEND_EQUATION_RGB',
++  32778: 'FUNC_SUBTRACT',
++  32779: 'FUNC_REVERSE_SUBTRACT',
++  32819: 'UNSIGNED_SHORT_4_4_4_4',
++  32820: 'UNSIGNED_SHORT_5_5_5_1',
++  32823: 'POLYGON_OFFSET_FILL',
++  32824: 'POLYGON_OFFSET_FACTOR',
++  32854: 'RGBA4',
++  32855: 'RGB5_A1',
++  32873: 'TEXTURE_BINDING_2D',
++  32926: 'SAMPLE_ALPHA_TO_COVERAGE',
++  32928: 'SAMPLE_COVERAGE',
++  32936: 'SAMPLE_BUFFERS',
++  32937: 'SAMPLES',
++  32938: 'SAMPLE_COVERAGE_VALUE',
++  32939: 'SAMPLE_COVERAGE_INVERT',
++  32968: 'BLEND_DST_RGB',
++  32969: 'BLEND_SRC_RGB',
++  32970: 'BLEND_DST_ALPHA',
++  32971: 'BLEND_SRC_ALPHA',
++  33071: 'CLAMP_TO_EDGE',
++  33170: 'GENERATE_MIPMAP_HINT',
++  33189: 'DEPTH_COMPONENT16',
++  33306: 'DEPTH_STENCIL_ATTACHMENT',
++  33635: 'UNSIGNED_SHORT_5_6_5',
++  33648: 'MIRRORED_REPEAT',
++  33901: 'ALIASED_POINT_SIZE_RANGE',
++  33902: 'ALIASED_LINE_WIDTH_RANGE',
++  33984: 'TEXTURE0',
++  33985: 'TEXTURE1',
++  33986: 'TEXTURE2',
++  33987: 'TEXTURE3',
++  33988: 'TEXTURE4',
++  33989: 'TEXTURE5',
++  33990: 'TEXTURE6',
++  33991: 'TEXTURE7',
++  33992: 'TEXTURE8',
++  33993: 'TEXTURE9',
++  33994: 'TEXTURE10',
++  33995: 'TEXTURE11',
++  33996: 'TEXTURE12',
++  33997: 'TEXTURE13',
++  33998: 'TEXTURE14',
++  33999: 'TEXTURE15',
++  34000: 'TEXTURE16',
++  34001: 'TEXTURE17',
++  34002: 'TEXTURE18',
++  34003: 'TEXTURE19',
++  34004: 'TEXTURE20',
++  34005: 'TEXTURE21',
++  34006: 'TEXTURE22',
++  34007: 'TEXTURE23',
++  34008: 'TEXTURE24',
++  34009: 'TEXTURE25',
++  34010: 'TEXTURE26',
++  34011: 'TEXTURE27',
++  34012: 'TEXTURE28',
++  34013: 'TEXTURE29',
++  34014: 'TEXTURE30',
++  34015: 'TEXTURE31',
++  34016: 'ACTIVE_TEXTURE',
++  34024: 'MAX_RENDERBUFFER_SIZE',
++  34041: 'DEPTH_STENCIL',
++  34055: 'INCR_WRAP',
++  34056: 'DECR_WRAP',
++  34067: 'TEXTURE_CUBE_MAP',
++  34068: 'TEXTURE_BINDING_CUBE_MAP',
++  34069: 'TEXTURE_CUBE_MAP_POSITIVE_X',
++  34070: 'TEXTURE_CUBE_MAP_NEGATIVE_X',
++  34071: 'TEXTURE_CUBE_MAP_POSITIVE_Y',
++  34072: 'TEXTURE_CUBE_MAP_NEGATIVE_Y',
++  34073: 'TEXTURE_CUBE_MAP_POSITIVE_Z',
++  34074: 'TEXTURE_CUBE_MAP_NEGATIVE_Z',
++  34076: 'MAX_CUBE_MAP_TEXTURE_SIZE',
++  34338: 'VERTEX_ATTRIB_ARRAY_ENABLED',
++  34339: 'VERTEX_ATTRIB_ARRAY_SIZE',
++  34340: 'VERTEX_ATTRIB_ARRAY_STRIDE',
++  34341: 'VERTEX_ATTRIB_ARRAY_TYPE',
++  34342: 'CURRENT_VERTEX_ATTRIB',
++  34373: 'VERTEX_ATTRIB_ARRAY_POINTER',
++  34466: 'NUM_COMPRESSED_TEXTURE_FORMATS',
++  34467: 'COMPRESSED_TEXTURE_FORMATS',
++  34660: 'BUFFER_SIZE',
++  34661: 'BUFFER_USAGE',
++  34816: 'STENCIL_BACK_FUNC',
++  34817: 'STENCIL_BACK_FAIL',
++  34818: 'STENCIL_BACK_PASS_DEPTH_FAIL',
++  34819: 'STENCIL_BACK_PASS_DEPTH_PASS',
++  34877: 'BLEND_EQUATION_ALPHA',
++  34921: 'MAX_VERTEX_ATTRIBS',
++  34922: 'VERTEX_ATTRIB_ARRAY_NORMALIZED',
++  34930: 'MAX_TEXTURE_IMAGE_UNITS',
++  34962: 'ARRAY_BUFFER',
++  34963: 'ELEMENT_ARRAY_BUFFER',
++  34964: 'ARRAY_BUFFER_BINDING',
++  34965: 'ELEMENT_ARRAY_BUFFER_BINDING',
++  34975: 'VERTEX_ATTRIB_ARRAY_BUFFER_BINDING',
++  35040: 'STREAM_DRAW',
++  35044: 'STATIC_DRAW',
++  35048: 'DYNAMIC_DRAW',
++  35632: 'FRAGMENT_SHADER',
++  35633: 'VERTEX_SHADER',
++  35660: 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
++  35661: 'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
++  35663: 'SHADER_TYPE',
++  35664: 'FLOAT_VEC2',
++  35665: 'FLOAT_VEC3',
++  35666: 'FLOAT_VEC4',
++  35667: 'INT_VEC2',
++  35668: 'INT_VEC3',
++  35669: 'INT_VEC4',
++  35670: 'BOOL',
++  35671: 'BOOL_VEC2',
++  35672: 'BOOL_VEC3',
++  35673: 'BOOL_VEC4',
++  35674: 'FLOAT_MAT2',
++  35675: 'FLOAT_MAT3',
++  35676: 'FLOAT_MAT4',
++  35678: 'SAMPLER_2D',
++  35680: 'SAMPLER_CUBE',
++  35712: 'DELETE_STATUS',
++  35713: 'COMPILE_STATUS',
++  35714: 'LINK_STATUS',
++  35715: 'VALIDATE_STATUS',
++  35716: 'INFO_LOG_LENGTH',
++  35717: 'ATTACHED_SHADERS',
++  35718: 'ACTIVE_UNIFORMS',
++  35719: 'ACTIVE_UNIFORM_MAX_LENGTH',
++  35720: 'SHADER_SOURCE_LENGTH',
++  35721: 'ACTIVE_ATTRIBUTES',
++  35722: 'ACTIVE_ATTRIBUTE_MAX_LENGTH',
++  35724: 'SHADING_LANGUAGE_VERSION',
++  35725: 'CURRENT_PROGRAM',
++  36003: 'STENCIL_BACK_REF',
++  36004: 'STENCIL_BACK_VALUE_MASK',
++  36005: 'STENCIL_BACK_WRITEMASK',
++  36006: 'FRAMEBUFFER_BINDING',
++  36007: 'RENDERBUFFER_BINDING',
++  36048: 'FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE',
++  36049: 'FRAMEBUFFER_ATTACHMENT_OBJECT_NAME',
++  36050: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL',
++  36051: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
++  36053: 'FRAMEBUFFER_COMPLETE',
++  36054: 'FRAMEBUFFER_INCOMPLETE_ATTACHMENT',
++  36055: 'FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT',
++  36057: 'FRAMEBUFFER_INCOMPLETE_DIMENSIONS',
++  36061: 'FRAMEBUFFER_UNSUPPORTED',
++  36064: 'COLOR_ATTACHMENT0',
++  36096: 'DEPTH_ATTACHMENT',
++  36128: 'STENCIL_ATTACHMENT',
++  36160: 'FRAMEBUFFER',
++  36161: 'RENDERBUFFER',
++  36162: 'RENDERBUFFER_WIDTH',
++  36163: 'RENDERBUFFER_HEIGHT',
++  36164: 'RENDERBUFFER_INTERNAL_FORMAT',
++  36168: 'STENCIL_INDEX8',
++  36176: 'RENDERBUFFER_RED_SIZE',
++  36177: 'RENDERBUFFER_GREEN_SIZE',
++  36178: 'RENDERBUFFER_BLUE_SIZE',
++  36179: 'RENDERBUFFER_ALPHA_SIZE',
++  36180: 'RENDERBUFFER_DEPTH_SIZE',
++  36181: 'RENDERBUFFER_STENCIL_SIZE',
++  36194: 'RGB565',
++  36336: 'LOW_FLOAT',
++  36337: 'MEDIUM_FLOAT',
++  36338: 'HIGH_FLOAT',
++  36339: 'LOW_INT',
++  36340: 'MEDIUM_INT',
++  36341: 'HIGH_INT',
++  36346: 'SHADER_COMPILER',
++  36347: 'MAX_VERTEX_UNIFORM_VECTORS',
++  36348: 'MAX_VARYING_VECTORS',
++  36349: 'MAX_FRAGMENT_UNIFORM_VECTORS',
++  37440: 'UNPACK_FLIP_Y_WEBGL',
++  37441: 'UNPACK_PREMULTIPLY_ALPHA_WEBGL',
++  37442: 'CONTEXT_LOST_WEBGL',
++  37443: 'UNPACK_COLORSPACE_CONVERSION_WEBGL',
++  37444: 'BROWSER_DEFAULT_WEBGL'
+ }
+ 
+-module.exports = closestPoint2d;
++},{}],123:[function(require,module,exports){
++var gl10 = require('./1.0/numbers')
++
++module.exports = function lookupConstant (number) {
++  return gl10[number]
++}
+ 
+-},{}],160:[function(require,module,exports){
++},{"./1.0/numbers":122}],124:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = extractContour
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var pool = require('typedarray-pool')
++var shaders = require('./lib/shaders')
+ 
+-var ndarray = require('ndarray')
+-var pool    = require('typedarray-pool')
+-var ndsort  = require('ndarray-sort')
++module.exports = createError2D
+ 
+-var contourAlgorithm = require('./lib/codegen')
++var WEIGHTS = [
++  // x-error bar
++  [1, 0, 0, 1, 0, 0],
++  [1, 0, 0, -1, 0, 0],
++  [-1, 0, 0, -1, 0, 0],
+ 
+-function getDimension(cells) {
+-  var numCells = cells.length
+-  var d = 0
+-  for(var i=0; i<numCells; ++i) {
+-    d = Math.max(d, cells[i].length)|0
+-  }
+-  return d-1
+-}
++  [-1, 0, 0, -1, 0, 0],
++  [-1, 0, 0, 1, 0, 0],
++  [1, 0, 0, 1, 0, 0],
+ 
+-function getSigns(values, level) {
+-  var numVerts    = values.length
+-  var vertexSigns = pool.mallocUint8(numVerts)
+-  for(var i=0; i<numVerts; ++i) {
+-    vertexSigns[i] = (values[i] < level)|0
+-  }
+-  return vertexSigns
+-}
++  // x-error right cap
++  [1, 0, -1, 0, 0, 1],
++  [1, 0, -1, 0, 0, -1],
++  [1, 0, 1, 0, 0, -1],
+ 
+-function getEdges(cells, d) {
+-  var numCells = cells.length
+-  var maxEdges = ((d * (d+1)/2) * numCells)|0
+-  var edges    = pool.mallocUint32(maxEdges*2)
+-  var ePtr     = 0
+-  for(var i=0; i<numCells; ++i) {
+-    var c = cells[i]
+-    var d = c.length
+-    for(var j=0; j<d; ++j) {
+-      for(var k=0; k<j; ++k) {
+-        var a = c[k]
+-        var b = c[j]
+-        edges[ePtr++] = Math.min(a,b)|0
+-        edges[ePtr++] = Math.max(a,b)|0
+-      }
+-    }
+-  }
+-  var nedges = (ePtr/2)|0
+-  ndsort(ndarray(edges, [nedges,2])) 
+-  var ptr = 2
+-  for(var i=2; i<ePtr; i+=2) {
+-    if(edges[i-2] === edges[i] &&
+-       edges[i-1] === edges[i+1]) {
+-      continue
+-    }
+-    edges[ptr++] = edges[i]
+-    edges[ptr++] = edges[i+1]
+-  }
++  [1, 0, 1, 0, 0, -1],
++  [1, 0, 1, 0, 0, 1],
++  [1, 0, -1, 0, 0, 1],
+ 
+-  return ndarray(edges, [(ptr/2)|0, 2])
+-}
++  // x-error left cap
++  [-1, 0, -1, 0, 0, 1],
++  [-1, 0, -1, 0, 0, -1],
++  [-1, 0, 1, 0, 0, -1],
+ 
+-function getCrossingWeights(edges, values, signs, level) {
+-  var edata     = edges.data
+-  var numEdges  = edges.shape[0]
+-  var weights   = pool.mallocDouble(numEdges)
+-  var ptr       = 0
+-  for(var i=0; i<numEdges; ++i) {
+-    var a  = edata[2*i]
+-    var b  = edata[2*i+1]
+-    if(signs[a] === signs[b]) {
+-      continue
+-    }
+-    var va = values[a]
+-    var vb = values[b]
+-    edata[2*ptr]     = a
+-    edata[2*ptr+1]   = b
+-    weights[ptr++]   = (vb - level) / (vb - va)
+-  }
+-  edges.shape[0] = ptr
+-  return ndarray(weights, [ptr])
+-}
++  [-1, 0, 1, 0, 0, -1],
++  [-1, 0, 1, 0, 0, 1],
++  [-1, 0, -1, 0, 0, 1],
+ 
+-function getCascade(edges, numVerts) {
+-  var result   = pool.mallocInt32(numVerts*2)
+-  var numEdges = edges.shape[0]
+-  var edata    = edges.data
+-  result[0]    = 0
+-  var lastV    = 0
+-  for(var i=0; i<numEdges; ++i) {
+-    var a = edata[2*i]
+-    if(a !== lastV) {
+-      result[2*lastV+1] = i
+-      while(++lastV < a) {
+-        result[2*lastV] = i
+-        result[2*lastV+1] = i
+-      }
+-      result[2*lastV] = i
+-    }
+-  }
+-  result[2*lastV+1] = numEdges
+-  while(++lastV < numVerts) {
+-    result[2*lastV] = result[2*lastV+1] = numEdges
+-  }
+-  return result
+-}
++  // y-error bar
++  [0, 1, 1, 0, 0, 0],
++  [0, 1, -1, 0, 0, 0],
++  [0, -1, -1, 0, 0, 0],
+ 
+-function unpackEdges(edges) {
+-  var ne = edges.shape[0]|0
+-  var edata = edges.data
+-  var result = new Array(ne)
+-  for(var i=0; i<ne; ++i) {
+-    result[i] = [edata[2*i], edata[2*i+1]]
+-  }
+-  return result
+-}
++  [0, -1, -1, 0, 0, 0],
++  [0, 1, 1, 0, 0, 0],
++  [0, -1, 1, 0, 0, 0],
+ 
+-function extractContour(cells, values, level, d) {
+-  level = level||0.0
++  // y-error top cap
++  [0, 1, 0, -1, 1, 0],
++  [0, 1, 0, -1, -1, 0],
++  [0, 1, 0, 1, -1, 0],
+ 
+-  //If user didn't specify `d`, use brute force scan
+-  if(typeof d === 'undefined') {
+-    d = getDimension(cells)
+-  }
++  [0, 1, 0, 1, 1, 0],
++  [0, 1, 0, -1, 1, 0],
++  [0, 1, 0, 1, -1, 0],
+ 
+-  //Count number of cells
+-  var numCells = cells.length
+-  if(numCells === 0 || d < 1) {
+-    return {
+-      cells:         [],
+-      vertexIds:     [],
+-      vertexWeights: []
+-    }
+-  }
++  // y-error bottom cap
++  [0, -1, 0, -1, 1, 0],
++  [0, -1, 0, -1, -1, 0],
++  [0, -1, 0, 1, -1, 0],
+ 
+-  //Read in vertex signs
+-  var vertexSigns = getSigns(values, +level)
++  [0, -1, 0, 1, 1, 0],
++  [0, -1, 0, -1, 1, 0],
++  [0, -1, 0, 1, -1, 0]
++]
+ 
+-  //First get 1-skeleton, find all crossings
+-  var edges   = getEdges(cells, d)
+-  var weights = getCrossingWeights(edges, values, vertexSigns, +level)
++function GLError2D (plot, shader, buffer) {
++  this.plot = plot
+ 
+-  //Build vertex cascade to speed up binary search
+-  var vcascade = getCascade(edges, values.length|0)
++  this.shader = shader
++  this.buffer = buffer
+ 
+-  //Then construct cells
+-  var faces = contourAlgorithm(d)(cells, edges.data, vcascade, vertexSigns)
++  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
+ 
+-  //Unpack data into pretty format
+-  var uedges   = unpackEdges(edges)
+-  var uweights = [].slice.call(weights.data, 0, weights.shape[0])
++  this.numPoints = 0
+ 
+-  //Release data
+-  pool.free(vertexSigns)
+-  pool.free(edges.data)
+-  pool.free(weights.data)
+-  pool.free(vcascade)
+-  
+-  return {
+-    cells:         faces,
+-    vertexIds:     uedges,
+-    vertexWeights: uweights
+-  }
++  this.color = [0, 0, 0, 1]
+ }
+-},{"./lib/codegen":161,"ndarray":433,"ndarray-sort":164,"typedarray-pool":458}],161:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = getPolygonizer
+-
+-var pool = require('typedarray-pool')
+-var createMSTable = require('marching-simplex-table')
++var proto = GLError2D.prototype
+ 
+-var CACHE = {}
++proto.draw = (function () {
++  var MATRIX = [
++    1, 0, 0,
++    0, 1, 0,
++    0, 0, 1
++  ]
+ 
+-function createCellPolygonizer(d) {
+-  var maxCellSize = 0
+-  var tables = new Array(d+1)
+-  tables[0] = [ [] ]
+-  for(var i=1; i<=d; ++i) {
+-    var tab = tables[i] = createMSTable(i)
+-    for(var j=0; j<tab.length; ++j) {
+-      maxCellSize = Math.max(maxCellSize, tab[i].length)
+-    }
+-  }
++  var PIXEL_SCALE = [1, 1]
+ 
+-  var code  = [
+-  'function B(C,E,i,j){',
+-    'var a=Math.min(i,j)|0,b=Math.max(i,j)|0,l=C[2*a],h=C[2*a+1];',
+-    'while(l<h){',
+-      'var m=(l+h)>>1,v=E[2*m+1];',
+-      'if(v===b){return m}',
+-      'if(b<v){h=m}else{l=m+1}',
+-    '}',
+-    'return l;',
+-  '};',
+-  'function getContour', d, 'd(F,E,C,S){',
+-    'var n=F.length,R=[];',
+-    'for(var i=0;i<n;++i){var c=F[i],l=c.length;'
+-  ]
++  return function () {
++    var plot = this.plot
++    var shader = this.shader
++    var buffer = this.buffer
++    var bounds = this.bounds
++    var numPoints = this.numPoints
+ 
+-  function generateCase(facets) {
+-    if(facets.length <= 0) {
++    if (!numPoints) {
+       return
+     }
+-    code.push('R.push(')
+-    for(var i=0; i<facets.length; ++i) {
+-      var facet = facets[i]
+-      if(i > 0) {
+-        code.push(',')
+-      }
+-      code.push('[')
+-      for(var j=0; j<facet.length; ++j) {
+-        var f = facet[j]
+-        if(j > 0) {
+-          code.push(',')
+-        }
+-        code.push('B(C,E,c[', f[0], '],c[', f[1], '])')
+-      }
+-      code.push(']')
+-    }
+-    code.push(');')
+-  }
+ 
+-  for(var i=d+1; i>1; --i) {
+-    if(i < d+1) {
+-      code.push('else ')
+-    }
+-    code.push('if(l===', i, '){')
++    var gl = plot.gl
++    var dataBox = plot.dataBox
++    var viewBox = plot.viewBox
++    var pixelRatio = plot.pixelRatio
+ 
+-    //Generate mask
+-    var maskStr = []
+-    for(var j=0; j<i; ++j) {
+-      maskStr.push('(S[c['+j+']]<<'+j+')')
+-    }
++    var boundX = bounds[2] - bounds[0]
++    var boundY = bounds[3] - bounds[1]
++    var dataX = dataBox[2] - dataBox[0]
++    var dataY = dataBox[3] - dataBox[1]
+ 
+-    //Perform table look up
+-    code.push('var M=', maskStr.join('+'), 
+-      ';if(M===0||M===', (1<<i)-1, 
+-        '){continue}switch(M){')
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-    var tab = tables[i-1]
+-    for(var j=0; j<tab.length; ++j) {
+-      code.push('case ', j, ':')
+-      generateCase(tab[j])
+-      code.push('break;')
+-    }
+-    code.push('}}')
+-  }
+-  code.push('}return R;};return getContour', d, 'd')
++    var screenX = viewBox[2] - viewBox[0]
++    var screenY = viewBox[3] - viewBox[1]
+ 
+-  var proc = new Function('pool', code.join(''))
+-  return proc(pool)
+-}
++    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
++    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
+ 
+-function getPolygonizer(d) {
+-  var alg = CACHE[d]
+-  if(!alg) {
+-    alg = CACHE[d] = createCellPolygonizer(d) 
++    buffer.bind()
++    shader.bind()
++
++    shader.uniforms.viewTransform = MATRIX
++    shader.uniforms.pixelScale = PIXEL_SCALE
++    shader.uniforms.color = this.color
++
++    shader.attributes.position.pointer(
++      gl.FLOAT,
++      false,
++      16,
++      0)
++
++    shader.attributes.pixelOffset.pointer(
++      gl.FLOAT,
++      false,
++      16,
++      8)
++
++    gl.drawArrays(gl.TRIANGLES, 0, numPoints * WEIGHTS.length)
+   }
+-  return alg
++})()
++
++proto.drawPick = function (offset) { return offset }
++proto.pick = function (x, y) {
++  return null
+ }
+-},{"marching-simplex-table":162,"typedarray-pool":458}],162:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = createTable
++proto.update = function (options) {
++  options = options || {}
+ 
+-var chull = require('convex-hull')
++  var i, x, y
+ 
+-function constructVertex(d, a, b) {
+-  var x = new Array(d)
+-  for(var i=0; i<d; ++i) {
+-    x[i] = 0.0
+-    if(i === a) {
+-      x[i] += 0.5
+-    }
+-    if(i === b) {
+-      x[i] += 0.5
+-    }
++  var positions = options.positions || []
++  var errors = options.errors || []
++
++  var lineWidth = 1
++  if ('lineWidth' in options) {
++    lineWidth = +options.lineWidth
+   }
+-  return x
+-}
+ 
+-function constructCell(dimension, mask) {
+-  if(mask === 0 || mask === (1<<(dimension+1))-1) {
+-    return []
++  var capSize = 5
++  if ('capSize' in options) {
++    capSize = +options.capSize
+   }
+-  var points = []
+-  var index  = []
+-  for(var i=0; i<=dimension; ++i) {
+-    if(mask & (1<<i)) {
+-      points.push(constructVertex(dimension, i-1, i-1))
+-      index.push(null)
+-      for(var j=0; j<=dimension; ++j) {
+-        if(~mask & (1<<j)) {
+-          points.push(constructVertex(dimension, i-1, j-1))
+-          index.push([i,j])
+-        }
++
++  this.color = (options.color || [0, 0, 0, 1]).slice()
++
++  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
++
++  var numPoints = this.numPoints = positions.length >> 1
++  for (i = 0; i < numPoints; ++i) {
++    x = positions[i * 2]
++    y = positions[i * 2 + 1]
++
++    bounds[0] = Math.min(x, bounds[0])
++    bounds[1] = Math.min(y, bounds[1])
++    bounds[2] = Math.max(x, bounds[2])
++    bounds[3] = Math.max(y, bounds[3])
++  }
++  if (bounds[2] === bounds[0]) {
++    bounds[2] += 1
++  }
++  if (bounds[3] === bounds[1]) {
++    bounds[3] += 1
++  }
++  var sx = 1.0 / (bounds[2] - bounds[0])
++  var sy = 1.0 / (bounds[3] - bounds[1])
++  var tx = bounds[0]
++  var ty = bounds[1]
++
++  var bufferData = pool.mallocFloat32(numPoints * WEIGHTS.length * 4)
++  var ptr = 0
++  for (i = 0; i < numPoints; ++i) {
++    x = positions[2 * i]
++    y = positions[2 * i + 1]
++    var ex0 = errors[4 * i]
++    var ex1 = errors[4 * i + 1]
++    var ey0 = errors[4 * i + 2]
++    var ey1 = errors[4 * i + 3]
++
++    for (var j = 0; j < WEIGHTS.length; ++j) {
++      var w = WEIGHTS[j]
++
++      var dx = w[0]
++      var dy = w[1]
++
++      if (dx < 0) {
++        dx *= ex0
++      } else if (dx > 0) {
++        dx *= ex1
+       }
+-    }
+-  }
+-  
+-  //Preprocess points so first d+1 points are linearly independent
+-  var hull = chull(points)
+-  var faces = []
+-i_loop:
+-  for(var i=0; i<hull.length; ++i) {
+-    var face = hull[i]
+-    var nface = []
+-    for(var j=0; j<face.length; ++j) {
+-      if(!index[face[j]]) {
+-        continue i_loop
++
++      if (dy < 0) {
++        dy *= ey0
++      } else if (dy > 0) {
++        dy *= ey1
+       }
+-      nface.push(index[face[j]].slice())
++
++      bufferData[ptr++] = sx * ((x - tx) + dx)
++      bufferData[ptr++] = sy * ((y - ty) + dy)
++      bufferData[ptr++] = lineWidth * w[2] + (capSize + lineWidth) * w[4]
++      bufferData[ptr++] = lineWidth * w[3] + (capSize + lineWidth) * w[5]
+     }
+-    faces.push(nface)
+   }
+-  return faces
++  this.buffer.update(bufferData)
++  pool.free(bufferData)
+ }
+ 
+-function createTable(dimension) {
+-  var numCells = 1<<(dimension+1)
+-  var result = new Array(numCells)
+-  for(var i=0; i<numCells; ++i) {
+-    result[i] = constructCell(dimension, i)
+-  }
+-  return result
++proto.dispose = function () {
++  this.plot.removeObject(this)
++  this.shader.dispose()
++  this.buffer.dispose()
+ }
+-},{"convex-hull":108}],163:[function(require,module,exports){
+-"use strict"
+ 
+-var pool = require("typedarray-pool")
++function createError2D (plot, options) {
++  var shader = createShader(plot.gl, shaders.vertex, shaders.fragment)
++  var buffer = createBuffer(plot.gl)
+ 
+-var INSERTION_SORT_THRESHOLD = 32
++  var errorbars = new GLError2D(plot, shader, buffer)
+ 
+-function getMallocFree(dtype) {
+-  switch(dtype) {
+-    case "uint8":
+-      return [pool.mallocUint8, pool.freeUint8]
+-    case "uint16":
+-      return [pool.mallocUint16, pool.freeUint16]
+-    case "uint32":
+-      return [pool.mallocUint32, pool.freeUint32]
+-    case "int8":
+-      return [pool.mallocInt8, pool.freeInt8]
+-    case "int16":
+-      return [pool.mallocInt16, pool.freeInt16]
+-    case "int32":
+-      return [pool.mallocInt32, pool.freeInt32]
+-    case "float32":
+-      return [pool.mallocFloat, pool.freeFloat]
+-    case "float64":
+-      return [pool.mallocDouble, pool.freeDouble]
+-    default:
+-      return null
+-  }
++  errorbars.update(options)
++
++  plot.addObject(errorbars)
++
++  return errorbars
+ }
+ 
+-function shapeArgs(dimension) {
+-  var args = []
+-  for(var i=0; i<dimension; ++i) {
+-    args.push("s"+i)
+-  }
+-  for(var i=0; i<dimension; ++i) {
+-    args.push("n"+i)
+-  }
+-  for(var i=1; i<dimension; ++i) {
+-    args.push("d"+i)
+-  }
+-  for(var i=1; i<dimension; ++i) {
+-    args.push("e"+i)
+-  }
+-  for(var i=1; i<dimension; ++i) {
+-    args.push("f"+i)
+-  }
+-  return args
++},{"./lib/shaders":125,"gl-buffer":121,"gl-shader":190,"typedarray-pool":449}],125:[function(require,module,exports){
++
++
++module.exports = {
++  vertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 pixelOffset;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvoid main() {\n  vec3 scrPosition = viewTransform * vec3(position, 1);\n  gl_Position = vec4(\n    scrPosition.xy + scrPosition.z * pixelScale * pixelOffset,\n    0,\n    scrPosition.z);\n}\n",
++  fragment: "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
+ }
+ 
+-function createInsertionSort(order, dtype) {
++},{}],126:[function(require,module,exports){
++'use strict'
+ 
+-  var code = ["'use strict'"]
+-  var funcName = ["ndarrayInsertionSort", order.join("d"), dtype].join("")
+-  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
+-  var allocator = getMallocFree(dtype)
+-  
+-  var vars = [ "i,j,cptr,ptr=left*s0+offset" ]
+-  
+-  if(order.length > 1) {
+-    var scratch_shape = []
+-    for(var i=1; i<order.length; ++i) {
+-      vars.push("i"+i)
+-      scratch_shape.push("n"+i)
+-    }
+-    if(allocator) {
+-      vars.push("scratch=malloc(" + scratch_shape.join("*") + ")")
+-    } else {
+-      vars.push("scratch=new Array("+scratch_shape.join("*") + ")")
+-    }
+-    vars.push("dptr","sptr","a","b")
+-  } else {
+-    vars.push("scratch")
+-  }
+-  
+-  function dataRead(ptr) {
+-    if(dtype === "generic") {
+-      return ["data.get(", ptr, ")"].join("")
+-    }
+-    return ["data[",ptr,"]"].join("")
+-  }
+-  
+-  function dataWrite(ptr, v) {
+-    if(dtype === "generic") {
+-      return ["data.set(", ptr, ",", v, ")"].join("")
+-    }
+-    return ["data[",ptr,"]=",v].join("")
+-  }
+-  
+-  //Create function header
+-  code.push(
+-    ["function ", funcName, "(", funcArgs.join(","), "){var ", vars.join(",")].join(""),
+-      "for(i=left+1;i<=right;++i){",
+-        "j=i;ptr+=s0",
+-        "cptr=ptr")
+-  
+-  
+-  if(order.length > 1) {
+-  
+-    //Copy data into scratch
+-    code.push("dptr=0;sptr=ptr")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    code.push("scratch[dptr++]=",dataRead("sptr"))
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push("sptr+=d"+j,"}")
+-    }
++module.exports = createErrorBars
+ 
+-    
+-    //Compare items in outer loop
+-    code.push("__g:while(j-->left){",
+-              "dptr=0",
+-              "sptr=cptr-s0")
+-    for(var i=1; i<order.length; ++i) {
+-      if(i === 1) {
+-        code.push("__l:")
+-      }
+-      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
+-    }
+-    code.push(["a=", dataRead("sptr"),"\nb=scratch[dptr]\nif(a<b){break __g}\nif(a>b){break __l}"].join(""))
+-    for(var i=order.length-1; i>=1; --i) {
+-      code.push(
+-        "sptr+=e"+i,
+-        "dptr+=f"+i,
+-        "}")
+-    }
+-    
+-    //Copy data back
+-    code.push("dptr=cptr;sptr=cptr-s0")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    code.push(dataWrite("dptr", dataRead("sptr")))
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["dptr+=d",j,";sptr+=d",j].join(""),"}")
+-    }
+-    
+-    //Close while loop
+-    code.push("cptr-=s0\n}")
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var createShader  = require('./shaders/index')
+ 
+-    //Copy scratch into cptr
+-    code.push("dptr=cptr;sptr=0")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    code.push(dataWrite("dptr", "scratch[sptr++]"))
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push("dptr+=d"+j,"}")
+-    }
+-  } else {
+-    code.push("scratch=" + dataRead("ptr"),
+-              "while((j-->left)&&("+dataRead("cptr-s0")+">scratch)){",
+-                dataWrite("cptr", dataRead("cptr-s0")),
+-                "cptr-=s0",
+-              "}",
+-              dataWrite("cptr", "scratch"))
+-  }
+-  
+-  //Close outer loop body
+-  code.push("}")
+-  if(order.length > 1 && allocator) {
+-    code.push("free(scratch)")
+-  }
+-  code.push("} return " + funcName)
+-  
+-  //Compile and link function
+-  if(allocator) {
+-    var result = new Function("malloc", "free", code.join("\n"))
+-    return result(allocator[0], allocator[1])
+-  } else {
+-    var result = new Function(code.join("\n"))
+-    return result()
+-  }
++var IDENTITY = [1,0,0,0,
++                0,1,0,0,
++                0,0,1,0,
++                0,0,0,1]
++
++function ErrorBars(gl, buffer, vao, shader) {
++  this.gl           = gl
++  this.shader       = shader
++  this.buffer       = buffer
++  this.vao          = vao
++  this.pixelRatio   = 1
++  this.bounds       = [[ Infinity, Infinity, Infinity], [-Infinity,-Infinity,-Infinity]]
++  this.clipBounds   = [[-Infinity,-Infinity,-Infinity], [ Infinity, Infinity, Infinity]]
++  this.lineWidth    = [1,1,1]
++  this.capSize      = [10,10,10]
++  this.lineCount    = [0,0,0]
++  this.lineOffset   = [0,0,0]
++  this.opacity      = 1
+ }
+ 
+-function createQuickSort(order, dtype, insertionSort) {
+-  var code = [ "'use strict'" ]
+-  var funcName = ["ndarrayQuickSort", order.join("d"), dtype].join("")
+-  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
+-  var allocator = getMallocFree(dtype)
+-  var labelCounter=0
+-  
+-  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
+-  
+-  var vars = [
+-    "sixth=((right-left+1)/6)|0",
+-    "index1=left+sixth",
+-    "index5=right-sixth",
+-    "index3=(left+right)>>1",
+-    "index2=index3-sixth",
+-    "index4=index3+sixth",
+-    "el1=index1",
+-    "el2=index2",
+-    "el3=index3",
+-    "el4=index4",
+-    "el5=index5",
+-    "less=left+1",
+-    "great=right-1",
+-    "pivots_are_equal=true",
+-    "tmp",
+-    "tmp0",
+-    "x",
+-    "y",
+-    "z",
+-    "k",
+-    "ptr0",
+-    "ptr1",
+-    "ptr2",
+-    "comp_pivot1=0",
+-    "comp_pivot2=0",
+-    "comp=0"
+-  ]
+-  
+-  if(order.length > 1) {
+-    var ele_size = []
+-    for(var i=1; i<order.length; ++i) {
+-      ele_size.push("n"+i)
+-      vars.push("i"+i)
+-    }
+-    for(var i=0; i<8; ++i) {
+-      vars.push("b_ptr"+i)
+-    }
+-    vars.push(
+-      "ptr3",
+-      "ptr4",
+-      "ptr5",
+-      "ptr6",
+-      "ptr7",
+-      "pivot_ptr",
+-      "ptr_shift",
+-      "elementSize="+ele_size.join("*"))
+-    if(allocator) {
+-      vars.push("pivot1=malloc(elementSize)",
+-                "pivot2=malloc(elementSize)")
+-    } else {
+-      vars.push("pivot1=new Array(elementSize),pivot2=new Array(elementSize)")
+-    }
+-  } else {
+-    vars.push("pivot1", "pivot2")
+-  }
+-  
+-  //Initialize local variables
+-  code.push("var " + vars.join(","))
+-  
+-  function toPointer(v) {
+-    return ["(offset+",v,"*s0)"].join("")
+-  }
+-  
+-  function dataRead(ptr) {
+-    if(dtype === "generic") {
+-      return ["data.get(", ptr, ")"].join("")
+-    }
+-    return ["data[",ptr,"]"].join("")
+-  }
+-  
+-  function dataWrite(ptr, v) {
+-    if(dtype === "generic") {
+-      return ["data.set(", ptr, ",", v, ")"].join("")
+-    }
+-    return ["data[",ptr,"]=",v].join("")
+-  }
+-  
+-  function cacheLoop(ptrs, usePivot, body) {
+-    if(ptrs.length === 1) {
+-      code.push("ptr0="+toPointer(ptrs[0]))
+-    } else {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
+-      }
+-    }
+-    if(usePivot) {
+-      code.push("pivot_ptr=0")
+-    }
+-    code.push("ptr_shift=offset")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    if(ptrs.length > 1) {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
+-      }
+-    }
+-    code.push(body)
+-    if(usePivot) {
+-      code.push("++pivot_ptr")
+-    }
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      if(ptrs.length>1) {
+-        code.push("ptr_shift+=d"+j)
+-      } else {
+-        code.push("ptr0+=d"+j)
+-      }
+-      code.push("}")
+-    }
+-  }
+-  
+-  function lexicoLoop(label, ptrs, usePivot, body) {
+-    if(ptrs.length === 1) {
+-      code.push("ptr0="+toPointer(ptrs[0]))
+-    } else {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
+-      }
+-      code.push("ptr_shift=offset")
+-    }
+-    if(usePivot) {
+-      code.push("pivot_ptr=0")
+-    }
+-    if(label) {
+-      code.push(label+":")
+-    }
+-    for(var i=1; i<order.length; ++i) {
+-      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
+-    }
+-    if(ptrs.length > 1) {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
+-      }
+-    }
+-    code.push(body)
+-    for(var i=order.length-1; i>=1; --i) {
+-      if(usePivot) {
+-        code.push("pivot_ptr+=f"+i)
+-      }
+-      if(ptrs.length > 1) {
+-        code.push("ptr_shift+=e"+i)
+-      } else {
+-        code.push("ptr0+=e"+i)
+-      }
+-      code.push("}")
+-    }
+-  }
+-  
+-  function cleanUp() {
+-    if(order.length > 1 && allocator) {
+-      code.push("free(pivot1)", "free(pivot2)")
+-    }
+-  }
+-  
+-  function compareSwap(a_id, b_id) {
+-    var a = "el"+a_id
+-    var b = "el"+b_id
+-    if(order.length > 1) {
+-      var lbl = "__l" + (++labelCounter)
+-      lexicoLoop(lbl, [a, b], false, [
+-        "comp=",dataRead("ptr0"),"-",dataRead("ptr1"),"\n",
+-        "if(comp>0){tmp0=", a, ";",a,"=",b,";", b,"=tmp0;break ", lbl,"}\n",
+-        "if(comp<0){break ", lbl, "}"
+-      ].join(""))
+-    } else {
+-      code.push(["if(", dataRead(toPointer(a)), ">", dataRead(toPointer(b)), "){tmp0=", a, ";",a,"=",b,";", b,"=tmp0}"].join(""))
+-    }
+-  }
+-  
+-  compareSwap(1, 2)
+-  compareSwap(4, 5)
+-  compareSwap(1, 3)
+-  compareSwap(2, 3)
+-  compareSwap(1, 4)
+-  compareSwap(3, 4)
+-  compareSwap(2, 5)
+-  compareSwap(2, 3)
+-  compareSwap(4, 5)
+-  
+-  if(order.length > 1) {
+-    cacheLoop(["el1", "el2", "el3", "el4", "el5", "index1", "index3", "index5"], true, [
+-      "pivot1[pivot_ptr]=",dataRead("ptr1"),"\n",
+-      "pivot2[pivot_ptr]=",dataRead("ptr3"),"\n",
+-      "pivots_are_equal=pivots_are_equal&&(pivot1[pivot_ptr]===pivot2[pivot_ptr])\n",
+-      "x=",dataRead("ptr0"),"\n",
+-      "y=",dataRead("ptr2"),"\n",
+-      "z=",dataRead("ptr4"),"\n",
+-      dataWrite("ptr5", "x"),"\n",
+-      dataWrite("ptr6", "y"),"\n",
+-      dataWrite("ptr7", "z")
+-    ].join(""))
+-  } else {
+-    code.push([
+-      "pivot1=", dataRead(toPointer("el2")), "\n",
+-      "pivot2=", dataRead(toPointer("el4")), "\n",
+-      "pivots_are_equal=pivot1===pivot2\n",
+-      "x=", dataRead(toPointer("el1")), "\n",
+-      "y=", dataRead(toPointer("el3")), "\n",
+-      "z=", dataRead(toPointer("el5")), "\n",
+-      dataWrite(toPointer("index1"), "x"), "\n",
+-      dataWrite(toPointer("index3"), "y"), "\n",
+-      dataWrite(toPointer("index5"), "z")
+-    ].join(""))
++var proto = ErrorBars.prototype
++
++proto.isOpaque = function() {
++  return this.opacity >= 1
++}
++
++proto.isTransparent = function() {
++  return this.opacity < 1
++}
++
++proto.drawTransparent = proto.draw = function(cameraParams) {
++  var gl = this.gl
++  var uniforms        = this.shader.uniforms
++
++  this.shader.bind()
++  var view       = uniforms.view       = cameraParams.view       || IDENTITY
++  var projection = uniforms.projection = cameraParams.projection || IDENTITY
++  uniforms.model      = cameraParams.model      || IDENTITY
++  uniforms.clipBounds = this.clipBounds
++  uniforms.opacity    = this.opacity
++
++
++  var cx = view[12]
++  var cy = view[13]
++  var cz = view[14]
++  var cw = view[15]
++  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
++
++
++  this.vao.bind()
++  for(var i=0; i<3; ++i) {
++    gl.lineWidth(this.lineWidth[i])
++    uniforms.capSize = this.capSize[i] * pixelScaleF
++    gl.drawArrays(gl.LINES, this.lineOffset[i], this.lineCount[i])
+   }
+-  
++  this.vao.unbind()
++}
+ 
+-  function moveElement(dst, src) {
+-    if(order.length > 1) {
+-      cacheLoop([dst, src], false,
+-        dataWrite("ptr0", dataRead("ptr1"))
+-      )
+-    } else {
+-      code.push(dataWrite(toPointer(dst), dataRead(toPointer(src))))
+-    }
++function updateBounds(bounds, point) {
++  for(var i=0; i<3; ++i) {
++    bounds[0][i] = Math.min(bounds[0][i], point[i])
++    bounds[1][i] = Math.max(bounds[1][i], point[i])
+   }
+-  
+-  moveElement("index2", "left")
+-  moveElement("index4", "right")
+-  
+-  function comparePivot(result, ptr, n) {
+-    if(order.length > 1) {
+-      var lbl = "__l" + (++labelCounter)
+-      lexicoLoop(lbl, [ptr], true, [
+-        result,"=",dataRead("ptr0"),"-pivot",n,"[pivot_ptr]\n",
+-        "if(",result,"!==0){break ", lbl, "}"
+-      ].join(""))
+-    } else {
+-      code.push([result,"=", dataRead(toPointer(ptr)), "-pivot", n].join(""))
++}
++
++var FACE_TABLE = (function(){
++  var table = new Array(3)
++  for(var d=0; d<3; ++d) {
++    var row = []
++    for(var j=1; j<=2; ++j) {
++      for(var s=-1; s<=1; s+=2) {
++        var u = (j+d) % 3
++        var y = [0,0,0]
++        y[u] = s
++        row.push(y)
++      }
+     }
++    table[d] = row
+   }
+-  
+-  function swapElements(a, b) {
+-    if(order.length > 1) {
+-      cacheLoop([a,b],false,[
+-        "tmp=",dataRead("ptr0"),"\n",
+-        dataWrite("ptr0", dataRead("ptr1")),"\n",
+-        dataWrite("ptr1", "tmp")
+-      ].join(""))
+-    } else {
+-      code.push([
+-        "ptr0=",toPointer(a),"\n",
+-        "ptr1=",toPointer(b),"\n",
+-        "tmp=",dataRead("ptr0"),"\n",
+-        dataWrite("ptr0", dataRead("ptr1")),"\n",
+-        dataWrite("ptr1", "tmp")
+-      ].join(""))
++  return table
++})()
++
++
++function emitFace(verts, x, c, d) {
++  var offsets = FACE_TABLE[d]
++  for(var i=0; i<offsets.length; ++i) {
++    var o = offsets[i]
++    verts.push(x[0], x[1], x[2],
++               c[0], c[1], c[2], c[3],
++               o[0], o[1], o[2])
++  }
++  return offsets.length
++}
++
++proto.update = function(options) {
++  options = options || {}
++
++  if('lineWidth' in options) {
++    this.lineWidth = options.lineWidth
++    if(!Array.isArray(this.lineWidth)) {
++      this.lineWidth = [this.lineWidth, this.lineWidth, this.lineWidth]
+     }
+   }
+-  
+-  function tripleSwap(k, less, great) {
+-    if(order.length > 1) {
+-      cacheLoop([k,less,great], false, [
+-        "tmp=",dataRead("ptr0"),"\n",
+-        dataWrite("ptr0", dataRead("ptr1")),"\n",
+-        dataWrite("ptr1", dataRead("ptr2")),"\n",
+-        dataWrite("ptr2", "tmp")
+-      ].join(""))
+-      code.push("++"+less, "--"+great)
+-    } else {
+-      code.push([
+-        "ptr0=",toPointer(k),"\n",
+-        "ptr1=",toPointer(less),"\n",
+-        "ptr2=",toPointer(great),"\n",
+-        "++",less,"\n",
+-        "--",great,"\n",
+-        "tmp=", dataRead("ptr0"), "\n",
+-        dataWrite("ptr0", dataRead("ptr1")), "\n",
+-        dataWrite("ptr1", dataRead("ptr2")), "\n",
+-        dataWrite("ptr2", "tmp")
+-      ].join(""))
++  if('capSize' in options) {
++    this.capSize = options.capSize
++    if(!Array.isArray(this.capSize)) {
++      this.capSize = [this.capSize, this.capSize, this.capSize]
+     }
+   }
+-  
+-  function swapAndDecrement(k, great) {
+-    swapElements(k, great)
+-    code.push("--"+great)
++  if('opacity' in options) {
++    this.opacity = options.opacity
+   }
+-    
+-  code.push("if(pivots_are_equal){")
+-    //Pivots are equal case
+-    code.push("for(k=less;k<=great;++k){")
+-      comparePivot("comp", "k", 1)
+-      code.push("if(comp===0){continue}")
+-      code.push("if(comp<0){")
+-        code.push("if(k!==less){")
+-          swapElements("k", "less")
+-        code.push("}")
+-        code.push("++less")
+-      code.push("}else{")
+-        code.push("while(true){")
+-          comparePivot("comp", "great", 1)
+-          code.push("if(comp>0){")
+-            code.push("great--")
+-          code.push("}else if(comp<0){")
+-            tripleSwap("k", "less", "great")
+-            code.push("break")
+-          code.push("}else{")
+-            swapAndDecrement("k", "great")
+-            code.push("break")
+-          code.push("}")
+-        code.push("}")
+-      code.push("}")
+-    code.push("}")
+-  code.push("}else{")
+-    //Pivots not equal case
+-    code.push("for(k=less;k<=great;++k){")
+-      comparePivot("comp_pivot1", "k", 1)
+-      code.push("if(comp_pivot1<0){")
+-        code.push("if(k!==less){")
+-          swapElements("k", "less")
+-        code.push("}")
+-        code.push("++less")
+-      code.push("}else{")
+-        comparePivot("comp_pivot2", "k", 2)
+-        code.push("if(comp_pivot2>0){")
+-          code.push("while(true){")
+-            comparePivot("comp", "great", 2)
+-            code.push("if(comp>0){")
+-              code.push("if(--great<k){break}")
+-              code.push("continue")
+-            code.push("}else{")
+-              comparePivot("comp", "great", 1)
+-              code.push("if(comp<0){")
+-                tripleSwap("k", "less", "great")
+-              code.push("}else{")
+-                swapAndDecrement("k", "great")
+-              code.push("}")
+-              code.push("break")
+-            code.push("}")
+-          code.push("}")
+-        code.push("}")
+-      code.push("}")
+-    code.push("}")
+-  code.push("}")
+-  
+-  //Move pivots to correct place
+-  function storePivot(mem_dest, pivot_dest, pivot) {
+-    if(order.length>1) {
+-      cacheLoop([mem_dest, pivot_dest], true, [
+-        dataWrite("ptr0", dataRead("ptr1")), "\n",
+-        dataWrite("ptr1", ["pivot",pivot,"[pivot_ptr]"].join(""))
+-      ].join(""))
+-    } else {
+-      code.push(
+-          dataWrite(toPointer(mem_dest), dataRead(toPointer(pivot_dest))),
+-          dataWrite(toPointer(pivot_dest), "pivot"+pivot))
+-    }
++
++  var color    = options.color || [[0,0,0],[0,0,0],[0,0,0]]
++  var position = options.position
++  var error    = options.error
++  if(!Array.isArray(color[0])) {
++    color = [color,color,color]
+   }
+-  
+-  storePivot("left", "(less-1)", 1)
+-  storePivot("right", "(great+1)", 2)
+ 
+-  //Recursive sort call
+-  function doSort(left, right) {
+-    code.push([
+-      "if((",right,"-",left,")<=",INSERTION_SORT_THRESHOLD,"){\n",
+-        "insertionSort(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
+-      "}else{\n",
+-        funcName, "(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
+-      "}"
+-    ].join(""))
++  if(position && error) {
++
++    var verts       = []
++    var n           = position.length
++    var vertexCount = 0
++    this.bounds     = [[ Infinity, Infinity, Infinity],
++                       [-Infinity,-Infinity,-Infinity]]
++    this.lineCount  = [0,0,0]
++
++    //Build geometry for lines
++    for(var j=0; j<3; ++j) {
++      this.lineOffset[j] = vertexCount
++
++i_loop:
++      for(var i=0; i<n; ++i) {
++        var p = position[i]
++
++        for(var k=0; k<3; ++k) {
++          if(isNaN(p[k]) || !isFinite(p[k])) {
++            continue i_loop
++          }
++        }
++
++        var e = error[i]
++        var c = color[j]
++        if(Array.isArray(c[0])) {
++          c = color[i]
++        }
++        if(c.length === 3) {
++          c = [c[0], c[1], c[2], 1]
++        }
++        if(isNaN(e[0][j]) || isNaN(e[1][j])) {
++          continue
++        }
++        if(e[0][j] < 0) {
++          var x = p.slice()
++          x[j] += e[0][j]
++          verts.push(p[0], p[1], p[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0,
++                     x[0], x[1], x[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0)
++          updateBounds(this.bounds, x)
++          vertexCount += 2 + emitFace(verts, x, c, j)
++        }
++        if(e[1][j] > 0) {
++          var x = p.slice()
++          x[j] += e[1][j]
++          verts.push(p[0], p[1], p[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0,
++                     x[0], x[1], x[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0)
++          updateBounds(this.bounds, x)
++          vertexCount += 2 + emitFace(verts, x, c, j)
++        }
++      }
++      this.lineCount[j] = vertexCount - this.lineOffset[j]
++    }
++    this.buffer.update(verts)
+   }
+-  doSort("left", "(less-2)")
+-  doSort("(great+2)", "right")
+-  
+-  //If pivots are equal, then early out
+-  code.push("if(pivots_are_equal){")
+-    cleanUp()
+-    code.push("return")
+-  code.push("}")
+-  
+-  function walkPointer(ptr, pivot, body) {
+-    if(order.length > 1) {
+-      code.push(["__l",++labelCounter,":while(true){"].join(""))
+-      cacheLoop([ptr], true, [
+-        "if(", dataRead("ptr0"), "!==pivot", pivot, "[pivot_ptr]){break __l", labelCounter, "}"
+-      ].join(""))
+-      code.push(body, "}")
+-    } else {
+-      code.push(["while(", dataRead(toPointer(ptr)), "===pivot", pivot, "){", body, "}"].join(""))
++}
++
++proto.dispose = function() {
++  this.shader.dispose()
++  this.buffer.dispose()
++  this.vao.dispose()
++}
++
++function createErrorBars(options) {
++  var gl = options.gl
++  var buffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++      {
++        buffer: buffer,
++        type:   gl.FLOAT,
++        size:   3,
++        offset: 0,
++        stride: 40
++      },
++      {
++        buffer: buffer,
++        type:   gl.FLOAT,
++        size:   4,
++        offset: 12,
++        stride: 40
++      },
++      {
++        buffer: buffer,
++        type:   gl.FLOAT,
++        size:   3,
++        offset: 28,
++        stride: 40
++      }
++    ])
++
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location    = 1
++  shader.attributes.offset.location   = 2
++
++  var result = new ErrorBars(gl, buffer, vao, shader)
++  result.update(options)
++  return result
++}
++
++},{"./shaders/index":127,"gl-buffer":121,"gl-vao":206}],127:[function(require,module,exports){
++'use strict'
++
++
++var createShader = require('gl-shader')
++
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, offset;\nattribute vec4 color;\nuniform mat4 model, view, projection;\nuniform float capSize;\nvarying vec4 fragColor;\nvarying vec3 fragPosition;\n\nvoid main() {\n  vec4 worldPosition  = model * vec4(position, 1.0);\n  worldPosition       = (worldPosition / worldPosition.w) + vec4(capSize * offset, 0.0);\n  gl_Position         = projection * view * worldPosition;\n  fragColor           = color;\n  fragPosition        = position;\n}"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\nuniform vec3 clipBounds[2];\nuniform float opacity;\nvarying vec3 fragPosition;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(fragPosition, clipBounds[0])) || any(greaterThan(fragPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = opacity * fragColor;\n}"
++
++module.exports = function(gl) {
++  return createShader(gl, vertSrc, fragSrc, null, [
++    {name: 'position', type: 'vec3'},
++    {name: 'offset', type: 'vec3'},
++    {name: 'color', type: 'vec4'}
++  ])
++}
++
++},{"gl-shader":190}],128:[function(require,module,exports){
++'use strict'
++
++var createTexture = require('gl-texture2d')
++
++module.exports = createFBO
++
++var colorAttachmentArrays = null
++var FRAMEBUFFER_UNSUPPORTED
++var FRAMEBUFFER_INCOMPLETE_ATTACHMENT
++var FRAMEBUFFER_INCOMPLETE_DIMENSIONS
++var FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
++
++function saveFBOState(gl) {
++  var fbo = gl.getParameter(gl.FRAMEBUFFER_BINDING)
++  var rbo = gl.getParameter(gl.RENDERBUFFER_BINDING)
++  var tex = gl.getParameter(gl.TEXTURE_BINDING_2D)
++  return [fbo, rbo, tex]
++}
++
++function restoreFBOState(gl, data) {
++  gl.bindFramebuffer(gl.FRAMEBUFFER, data[0])
++  gl.bindRenderbuffer(gl.RENDERBUFFER, data[1])
++  gl.bindTexture(gl.TEXTURE_2D, data[2])
++}
++
++function lazyInitColorAttachments(gl, ext) {
++  var maxColorAttachments = gl.getParameter(ext.MAX_COLOR_ATTACHMENTS_WEBGL)
++  colorAttachmentArrays = new Array(maxColorAttachments + 1)
++  for(var i=0; i<=maxColorAttachments; ++i) {
++    var x = new Array(maxColorAttachments)
++    for(var j=0; j<i; ++j) {
++      x[j] = gl.COLOR_ATTACHMENT0 + j
++    }
++    for(var j=i; j<maxColorAttachments; ++j) {
++      x[j] = gl.NONE
+     }
++    colorAttachmentArrays[i] = x
+   }
+-  
+-  //Check bounds
+-  code.push("if(less<index1&&great>index5){")
+-  
+-    walkPointer("less", 1, "++less")
+-    walkPointer("great", 2, "--great")
+-  
+-    code.push("for(k=less;k<=great;++k){")
+-      comparePivot("comp_pivot1", "k", 1)
+-      code.push("if(comp_pivot1===0){")
+-        code.push("if(k!==less){")
+-          swapElements("k", "less")
+-        code.push("}")
+-        code.push("++less")
+-      code.push("}else{")
+-        comparePivot("comp_pivot2", "k", 2)
+-        code.push("if(comp_pivot2===0){")
+-          code.push("while(true){")
+-            comparePivot("comp", "great", 2)
+-            code.push("if(comp===0){")
+-              code.push("if(--great<k){break}")
+-              code.push("continue")
+-            code.push("}else{")
+-              comparePivot("comp", "great", 1)
+-              code.push("if(comp<0){")
+-                tripleSwap("k", "less", "great")
+-              code.push("}else{")
+-                swapAndDecrement("k", "great")
+-              code.push("}")
+-              code.push("break")
+-            code.push("}")
+-          code.push("}")
+-        code.push("}")
+-      code.push("}")
+-    code.push("}")
+-  code.push("}")
+-  
+-  //Clean up and do a final sorting pass
+-  cleanUp()
+-  doSort("less", "great")
+- 
+-  //Close off main loop
+-  code.push("}return " + funcName)
+-  
+-  //Compile and link
+-  if(order.length > 1 && allocator) {
+-    var compiled = new Function("insertionSort", "malloc", "free", code.join("\n"))
+-    return compiled(insertionSort, allocator[0], allocator[1])
++}
++
++//Throw an appropriate error
++function throwFBOError(status) {
++  switch(status){
++    case FRAMEBUFFER_UNSUPPORTED:
++      throw new Error('gl-fbo: Framebuffer unsupported')
++    case FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
++      throw new Error('gl-fbo: Framebuffer incomplete attachment')
++    case FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
++      throw new Error('gl-fbo: Framebuffer incomplete dimensions')
++    case FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
++      throw new Error('gl-fbo: Framebuffer incomplete missing attachment')
++    default:
++      throw new Error('gl-fbo: Framebuffer failed for unspecified reason')
+   }
+-  var compiled = new Function("insertionSort", code.join("\n"))
+-  return compiled(insertionSort)
+ }
+ 
+-function compileSort(order, dtype) {
+-  var code = ["'use strict'"]
+-  var funcName = ["ndarraySortWrapper", order.join("d"), dtype].join("")
+-  var funcArgs = [ "array" ]
+-  
+-  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
+-  
+-  //Unpack local variables from array
+-  var vars = ["data=array.data,offset=array.offset|0,shape=array.shape,stride=array.stride"]
+-  for(var i=0; i<order.length; ++i) {
+-    vars.push(["s",i,"=stride[",i,"]|0,n",i,"=shape[",i,"]|0"].join(""))
++//Initialize a texture object
++function initTexture(gl, width, height, type, format, attachment) {
++  if(!type) {
++    return null
++  }
++  var result = createTexture(gl, width, height, format, type)
++  result.magFilter = gl.NEAREST
++  result.minFilter = gl.NEAREST
++  result.mipSamples = 1
++  result.bind()
++  gl.framebufferTexture2D(gl.FRAMEBUFFER, attachment, gl.TEXTURE_2D, result.handle, 0)
++  return result
++}
++
++//Initialize a render buffer object
++function initRenderBuffer(gl, width, height, component, attachment) {
++  var result = gl.createRenderbuffer()
++  gl.bindRenderbuffer(gl.RENDERBUFFER, result)
++  gl.renderbufferStorage(gl.RENDERBUFFER, component, width, height)
++  gl.framebufferRenderbuffer(gl.FRAMEBUFFER, attachment, gl.RENDERBUFFER, result)
++  return result
++}
++
++//Rebuild the frame buffer
++function rebuildFBO(fbo) {
++
++  //Save FBO state
++  var state = saveFBOState(fbo.gl)
++
++  var gl = fbo.gl
++  var handle = fbo.handle = gl.createFramebuffer()
++  var width = fbo._shape[0]
++  var height = fbo._shape[1]
++  var numColors = fbo.color.length
++  var ext = fbo._ext
++  var useStencil = fbo._useStencil
++  var useDepth = fbo._useDepth
++  var colorType = fbo._colorType
++
++  //Bind the fbo
++  gl.bindFramebuffer(gl.FRAMEBUFFER, handle)
++
++  //Allocate color buffers
++  for(var i=0; i<numColors; ++i) {
++    fbo.color[i] = initTexture(gl, width, height, colorType, gl.RGBA, gl.COLOR_ATTACHMENT0 + i)
+   }
+-  
+-  var scratch_stride = new Array(order.length)
+-  var nprod = []
+-  for(var i=0; i<order.length; ++i) {
+-    var k = order[i]
+-    if(k === 0) {
+-      continue
+-    }
+-    if(nprod.length === 0) {
+-      scratch_stride[k] = "1"
+-    } else {
+-      scratch_stride[k] = nprod.join("*")
++  if(numColors === 0) {
++    fbo._color_rb = initRenderBuffer(gl, width, height, gl.RGBA4, gl.COLOR_ATTACHMENT0)
++    if(ext) {
++      ext.drawBuffersWEBGL(colorAttachmentArrays[0])
+     }
+-    nprod.push("n"+k)
++  } else if(numColors > 1) {
++    ext.drawBuffersWEBGL(colorAttachmentArrays[numColors])
+   }
+-  
+-  var p = -1, q = -1
+-  for(var i=0; i<order.length; ++i) {
+-    var j = order[i]
+-    if(j !== 0) {
+-      if(p > 0) {
+-        vars.push(["d",j,"=s",j,"-d",p,"*n",p].join(""))
+-      } else {
+-        vars.push(["d",j,"=s",j].join(""))
+-      }
+-      p = j
++
++  //Allocate depth/stencil buffers
++  var WEBGL_depth_texture = gl.getExtension('WEBGL_depth_texture')
++  if(WEBGL_depth_texture) {
++    if(useStencil) {
++      fbo.depth = initTexture(gl, width, height,
++                          WEBGL_depth_texture.UNSIGNED_INT_24_8_WEBGL,
++                          gl.DEPTH_STENCIL,
++                          gl.DEPTH_STENCIL_ATTACHMENT)
++    } else if(useDepth) {
++      fbo.depth = initTexture(gl, width, height,
++                          gl.UNSIGNED_SHORT,
++                          gl.DEPTH_COMPONENT,
++                          gl.DEPTH_ATTACHMENT)
+     }
+-    var k = order.length-1-i
+-    if(k !== 0) {
+-      if(q > 0) {
+-        vars.push(["e",k,"=s",k,"-e",q,"*n",q,
+-                  ",f",k,"=",scratch_stride[k],"-f",q,"*n",q].join(""))
+-      } else {
+-        vars.push(["e",k,"=s",k,",f",k,"=",scratch_stride[k]].join(""))
+-      }
+-      q = k
++  } else {
++    if(useDepth && useStencil) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_STENCIL, gl.DEPTH_STENCIL_ATTACHMENT)
++    } else if(useDepth) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_COMPONENT16, gl.DEPTH_ATTACHMENT)
++    } else if(useStencil) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.STENCIL_INDEX, gl.STENCIL_ATTACHMENT)
+     }
+   }
+-  
+-  //Declare local variables
+-  code.push("var " + vars.join(","))
+-  
+-  //Create arguments for subroutine
+-  var sortArgs = ["0", "n0-1", "data", "offset"].concat(shapeArgs(order.length))
+-  
+-  //Call main sorting routine
+-  code.push([
+-    "if(n0<=",INSERTION_SORT_THRESHOLD,"){",
+-      "insertionSort(", sortArgs.join(","), ")}else{",
+-      "quickSort(", sortArgs.join(","),
+-    ")}"
+-  ].join(""))
+-  
+-  //Return
+-  code.push("}return " + funcName)
+-  
+-  //Link everything together
+-  var result = new Function("insertionSort", "quickSort", code.join("\n"))
+-  var insertionSort = createInsertionSort(order, dtype)
+-  var quickSort = createQuickSort(order, dtype, insertionSort)
+-  return result(insertionSort, quickSort)
+-}
+ 
+-module.exports = compileSort
+-},{"typedarray-pool":458}],164:[function(require,module,exports){
+-"use strict"
++  //Check frame buffer state
++  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
++  if(status !== gl.FRAMEBUFFER_COMPLETE) {
+ 
+-var compile = require("./lib/compile_sort.js")
+-var CACHE = {}
++    //Release all partially allocated resources
++    fbo._destroyed = true
+ 
+-function sort(array) {
+-  var order = array.order
+-  var dtype = array.dtype
+-  var typeSig = [order, dtype ]
+-  var typeName = typeSig.join(":")
+-  var compiled = CACHE[typeName]
+-  if(!compiled) {
+-    CACHE[typeName] = compiled = compile(order, dtype)
++    //Release all resources
++    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++    gl.deleteFramebuffer(fbo.handle)
++    fbo.handle = null
++    if(fbo.depth) {
++      fbo.depth.dispose()
++      fbo.depth = null
++    }
++    if(fbo._depth_rb) {
++      gl.deleteRenderbuffer(fbo._depth_rb)
++      fbo._depth_rb = null
++    }
++    for(var i=0; i<fbo.color.length; ++i) {
++      fbo.color[i].dispose()
++      fbo.color[i] = null
++    }
++    if(fbo._color_rb) {
++      gl.deleteRenderbuffer(fbo._color_rb)
++      fbo._color_rb = null
++    }
++
++    restoreFBOState(gl, state)
++
++    //Throw the frame buffer error
++    throwFBOError(status)
+   }
+-  compiled(array)
+-  return array
++
++  //Everything ok, let's get on with life
++  restoreFBOState(gl, state)
+ }
+ 
+-module.exports = sort
+-},{"./lib/compile_sort.js":163}],165:[function(require,module,exports){
+-'use strict'
++function Framebuffer(gl, width, height, colorType, numColors, useDepth, useStencil, ext) {
+ 
+-module.exports = createBoxes
++  //Handle and set properties
++  this.gl = gl
++  this._shape = [width|0, height|0]
++  this._destroyed = false
++  this._ext = ext
+ 
+-var createBuffer = require('gl-buffer')
+-var createShader = require('gl-shader')
++  //Allocate buffers
++  this.color = new Array(numColors)
++  for(var i=0; i<numColors; ++i) {
++    this.color[i] = null
++  }
++  this._color_rb = null
++  this.depth = null
++  this._depth_rb = null
+ 
+-var shaders = require('./shaders')
++  //Save depth and stencil flags
++  this._colorType = colorType
++  this._useDepth = useDepth
++  this._useStencil = useStencil
+ 
+-function Boxes(plot, vbo, shader) {
+-  this.plot   = plot
+-  this.vbo    = vbo
+-  this.shader = shader
++  //Shape vector for resizing
++  var parent = this
++  var shapeVector = [width|0, height|0]
++  Object.defineProperties(shapeVector, {
++    0: {
++      get: function() {
++        return parent._shape[0]
++      },
++      set: function(w) {
++        return parent.width = w
++      }
++    },
++    1: {
++      get: function() {
++        return parent._shape[1]
++      },
++      set: function(h) {
++        return parent.height = h
++      }
++    }
++  })
++  this._shapeVector = shapeVector
++
++  //Initialize all attachments
++  rebuildFBO(this)
+ }
+ 
+-var proto = Boxes.prototype
++var proto = Framebuffer.prototype
+ 
+-proto.bind = function() {
+-  var shader = this.shader
+-  this.vbo.bind()
+-  this.shader.bind()
+-  shader.attributes.coord.pointer()
+-  shader.uniforms.screenBox = this.plot.screenBox
+-}
++function reshapeFBO(fbo, w, h) {
++  //If fbo is invalid, just skip this
++  if(fbo._destroyed) {
++    throw new Error('gl-fbo: Can\'t resize destroyed FBO')
++  }
+ 
+-proto.drawBox = (function() {
+-  var lo = [0,0]
+-  var hi = [0,0]
+-  return function(loX, loY, hiX, hiY, color) {
+-    var plot       = this.plot
+-    var shader     = this.shader
+-    var gl         = plot.gl
++  //Don't resize if no change in shape
++  if( (fbo._shape[0] === w) &&
++      (fbo._shape[1] === h) ) {
++    return
++  }
+ 
+-    lo[0] = loX
+-    lo[1] = loY
+-    hi[0] = hiX
+-    hi[1] = hiY
++  var gl = fbo.gl
+ 
+-    shader.uniforms.lo     = lo
+-    shader.uniforms.hi     = hi
+-    shader.uniforms.color  = color
++  //Check parameter ranges
++  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
++  if( w < 0 || w > maxFBOSize ||
++      h < 0 || h > maxFBOSize) {
++    throw new Error('gl-fbo: Can\'t resize FBO, invalid dimensions')
++  }
+ 
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
++  //Update shape
++  fbo._shape[0] = w
++  fbo._shape[1] = h
++
++  //Save framebuffer state
++  var state = saveFBOState(gl)
++
++  //Resize framebuffer attachments
++  for(var i=0; i<fbo.color.length; ++i) {
++    fbo.color[i].shape = fbo._shape
++  }
++  if(fbo._color_rb) {
++    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._color_rb)
++    gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fbo._shape[0], fbo._shape[1])
++  }
++  if(fbo.depth) {
++    fbo.depth.shape = fbo._shape
++  }
++  if(fbo._depth_rb) {
++    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._depth_rb)
++    if(fbo._useDepth && fbo._useStencil) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, fbo._shape[0], fbo._shape[1])
++    } else if(fbo._useDepth) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, fbo._shape[0], fbo._shape[1])
++    } else if(fbo._useStencil) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.STENCIL_INDEX, fbo._shape[0], fbo._shape[1])
++    }
+   }
+-}())
+ 
+-proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
+-}
++  //Check FBO status after resize, if something broke then die in a fire
++  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo.handle)
++  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
++  if(status !== gl.FRAMEBUFFER_COMPLETE) {
++    fbo.dispose()
++    restoreFBOState(gl, state)
++    throwFBOError(status)
++  }
+ 
+-function createBoxes(plot) {
+-  var gl  = plot.gl
+-  var vbo = createBuffer(gl, [
+-    0,0,
+-    0,1,
+-    1,0,
+-    1,1])
+-  var shader  = createShader(gl, shaders.boxVert, shaders.lineFrag)
+-  return new Boxes(plot, vbo, shader)
++  //Restore framebuffer state
++  restoreFBOState(gl, state)
+ }
+ 
+-},{"./shaders":168,"gl-buffer":124,"gl-shader":203}],166:[function(require,module,exports){
+-'use strict'
++Object.defineProperties(proto, {
++  'shape': {
++    get: function() {
++      if(this._destroyed) {
++        return [0,0]
++      }
++      return this._shapeVector
++    },
++    set: function(x) {
++      if(!Array.isArray(x)) {
++        x = [x|0, x|0]
++      }
++      if(x.length !== 2) {
++        throw new Error('gl-fbo: Shape vector must be length 2')
++      }
+ 
+-module.exports = createGrid
++      var w = x[0]|0
++      var h = x[1]|0
++      reshapeFBO(this, w, h)
+ 
+-var createBuffer  = require('gl-buffer')
+-var createShader  = require('gl-shader')
+-var bsearch       = require('binary-search-bounds')
+-var shaders       = require('./shaders')
++      return [w, h]
++    },
++    enumerable: false
++  },
++  'width': {
++    get: function() {
++      if(this._destroyed) {
++        return 0
++      }
++      return this._shape[0]
++    },
++    set: function(w) {
++      w = w|0
++      reshapeFBO(this, w, this._shape[1])
++      return w
++    },
++    enumerable: false
++  },
++  'height': {
++    get: function() {
++      if(this._destroyed) {
++        return 0
++      }
++      return this._shape[1]
++    },
++    set: function(h) {
++      h = h|0
++      reshapeFBO(this, this._shape[0], h)
++      return h
++    },
++    enumerable: false
++  }
++})
+ 
+-function Grid(plot, vbo, shader, tickShader) {
+-  this.plot   = plot
+-  this.vbo    = vbo
+-  this.shader = shader
+-  this.tickShader = tickShader
+-  this.ticks  = [[], []]
++proto.bind = function() {
++  if(this._destroyed) {
++    return
++  }
++  var gl = this.gl
++  gl.bindFramebuffer(gl.FRAMEBUFFER, this.handle)
++  gl.viewport(0, 0, this._shape[0], this._shape[1])
+ }
+ 
+-function compareTickNum(a, b) {
+-  return a - b
++proto.dispose = function() {
++  if(this._destroyed) {
++    return
++  }
++  this._destroyed = true
++  var gl = this.gl
++  gl.deleteFramebuffer(this.handle)
++  this.handle = null
++  if(this.depth) {
++    this.depth.dispose()
++    this.depth = null
++  }
++  if(this._depth_rb) {
++    gl.deleteRenderbuffer(this._depth_rb)
++    this._depth_rb = null
++  }
++  for(var i=0; i<this.color.length; ++i) {
++    this.color[i].dispose()
++    this.color[i] = null
++  }
++  if(this._color_rb) {
++    gl.deleteRenderbuffer(this._color_rb)
++    this._color_rb = null
++  }
+ }
+ 
+-var proto = Grid.prototype
++function createFBO(gl, width, height, options) {
+ 
+-proto.draw = (function() {
++  //Update frame buffer error code values
++  if(!FRAMEBUFFER_UNSUPPORTED) {
++    FRAMEBUFFER_UNSUPPORTED = gl.FRAMEBUFFER_UNSUPPORTED
++    FRAMEBUFFER_INCOMPLETE_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT
++    FRAMEBUFFER_INCOMPLETE_DIMENSIONS = gl.FRAMEBUFFER_INCOMPLETE_DIMENSIONS
++    FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
++  }
+ 
+-  var DATA_SHIFT = [0,0]
+-  var DATA_SCALE = [0,0]
+-  var DATA_AXIS  = [0,0]
++  //Lazily initialize color attachment arrays
++  var WEBGL_draw_buffers = gl.getExtension('WEBGL_draw_buffers')
++  if(!colorAttachmentArrays && WEBGL_draw_buffers) {
++    lazyInitColorAttachments(gl, WEBGL_draw_buffers)
++  }
+ 
+-  return function() {
+-    var plot       = this.plot
+-    var vbo        = this.vbo
+-    var shader     = this.shader
+-    var ticks      = this.ticks
+-    var gl         = plot.gl
+-    var bounds     = plot._tickBounds
+-    var dataBox    = plot.dataBox
+-    var viewPixels = plot.viewBox
+-    var lineWidth  = plot.gridLineWidth
+-    var gridColor  = plot.gridLineColor
+-    var gridEnable = plot.gridLineEnable
+-    var pixelRatio = plot.pixelRatio
++  //Special case: Can accept an array as argument
++  if(Array.isArray(width)) {
++    options = height
++    height = width[1]|0
++    width = width[0]|0
++  }
+ 
+-    for(var i=0; i<2; ++i) {
+-      var lo = bounds[i]
+-      var hi = bounds[i+2]
+-      var boundScale = hi - lo
+-      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
+-      var dataWidth   = dataBox[i+2] - dataBox[i]
+-      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
+-      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
+-    }
++  if(typeof width !== 'number') {
++    throw new Error('gl-fbo: Missing shape parameter')
++  }
+ 
+-    shader.bind()
+-    vbo.bind()
+-    shader.attributes.dataCoord.pointer()
+-    shader.uniforms.dataShift = DATA_SHIFT
+-    shader.uniforms.dataScale = DATA_SCALE
++  //Validate width/height properties
++  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
++  if(width < 0 || width > maxFBOSize || height < 0 || height > maxFBOSize) {
++    throw new Error('gl-fbo: Parameters are too large for FBO')
++  }
+ 
+-    var offset = 0
+-    for(var i=0; i<2; ++i) {
+-      DATA_AXIS[0] = DATA_AXIS[1] = 0
+-      DATA_AXIS[i] = 1
+-      shader.uniforms.dataAxis  = DATA_AXIS
+-      shader.uniforms.lineWidth = lineWidth[i] / (viewPixels[i+2] - viewPixels[i]) * pixelRatio
+-      shader.uniforms.color     = gridColor[i]
++  //Handle each option type
++  options = options || {}
+ 
+-      var size = ticks[i].length * 6
+-      if(gridEnable[i] && size) {
+-        gl.drawArrays(gl.TRIANGLES, offset, size)
++  //Figure out number of color buffers to use
++  var numColors = 1
++  if('color' in options) {
++    numColors = Math.max(options.color|0, 0)
++    if(numColors < 0) {
++      throw new Error('gl-fbo: Must specify a nonnegative number of colors')
++    }
++    if(numColors > 1) {
++      //Check if multiple render targets supported
++      if(!WEBGL_draw_buffers) {
++        throw new Error('gl-fbo: Multiple draw buffer extension not supported')
++      } else if(numColors > gl.getParameter(WEBGL_draw_buffers.MAX_COLOR_ATTACHMENTS_WEBGL)) {
++        throw new Error('gl-fbo: Context does not support ' + numColors + ' draw buffers')
+       }
+-      offset += size
+     }
+   }
+-})()
+-
+-proto.drawTickMarks = (function() {
+-  var DATA_SHIFT = [0,0]
+-  var DATA_SCALE = [0,0]
+-  var X_AXIS     = [1,0]
+-  var Y_AXIS     = [0,1]
+-  var SCR_OFFSET = [0,0]
+-  var TICK_SCALE = [0,0]
+-
+-  return function() {
+-    var plot       = this.plot
+-    var vbo        = this.vbo
+-    var shader     = this.tickShader
+-    var ticks      = this.ticks
+-    var gl         = plot.gl
+-    var bounds     = plot._tickBounds
+-    var dataBox    = plot.dataBox
+-    var viewBox    = plot.viewBox
+-    var pixelRatio = plot.pixelRatio
+-    var screenBox  = plot.screenBox
+-
+-    var screenWidth  = screenBox[2] - screenBox[0]
+-    var screenHeight = screenBox[3] - screenBox[1]
+-    var viewWidth    = viewBox[2]   - viewBox[0]
+-    var viewHeight   = viewBox[3]   - viewBox[1]
+ 
+-    for(var i=0; i<2; ++i) {
+-      var lo = bounds[i]
+-      var hi = bounds[i+2]
+-      var boundScale = hi - lo
+-      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
+-      var dataWidth   = (dataBox[i+2] - dataBox[i])
+-      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
+-      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
++  //Determine whether to use floating point textures
++  var colorType = gl.UNSIGNED_BYTE
++  var OES_texture_float = gl.getExtension('OES_texture_float')
++  if(options.float && numColors > 0) {
++    if(!OES_texture_float) {
++      throw new Error('gl-fbo: Context does not support floating point textures')
+     }
++    colorType = gl.FLOAT
++  } else if(options.preferFloat && numColors > 0) {
++    if(OES_texture_float) {
++      colorType = gl.FLOAT
++    }
++  }
+ 
+-    DATA_SCALE[0] *= viewWidth / screenWidth
+-    DATA_SHIFT[0] *= viewWidth / screenWidth
+-
+-    DATA_SCALE[1] *= viewHeight / screenHeight
+-    DATA_SHIFT[1] *= viewHeight / screenHeight
+-
+-    shader.bind()
+-    vbo.bind()
++  //Check if we should use depth buffer
++  var useDepth = true
++  if('depth' in options) {
++    useDepth = !!options.depth
++  }
+ 
+-    shader.attributes.dataCoord.pointer()
++  //Check if we should use a stencil buffer
++  var useStencil = false
++  if('stencil' in options) {
++    useStencil = !!options.stencil
++  }
+ 
+-    var uniforms = shader.uniforms
+-    uniforms.dataShift = DATA_SHIFT
+-    uniforms.dataScale = DATA_SCALE
++  return new Framebuffer(
++    gl,
++    width,
++    height,
++    colorType,
++    numColors,
++    useDepth,
++    useStencil,
++    WEBGL_draw_buffers)
++}
+ 
+-    var tickMarkLength = plot.tickMarkLength
+-    var tickMarkWidth  = plot.tickMarkWidth
+-    var tickMarkColor  = plot.tickMarkColor
++},{"gl-texture2d":202}],129:[function(require,module,exports){
+ 
+-    var xTicksOffset = 0
+-    var yTicksOffset = ticks[0].length * 6
++var sprintf = require('sprintf-js').sprintf;
++var glConstants = require('gl-constants/lookup');
++var shaderName = require('glsl-shader-name');
++var addLineNumbers = require('add-line-numbers');
+ 
+-    var xStart = Math.min(bsearch.ge(ticks[0], (dataBox[0] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
+-    var xEnd   = Math.min(bsearch.gt(ticks[0], (dataBox[2] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
+-    var xOffset = xTicksOffset + 6 * xStart
+-    var xCount  = 6 * Math.max(0, xEnd - xStart)
++module.exports = formatCompilerError;
+ 
+-    var yStart = Math.min(bsearch.ge(ticks[1], (dataBox[1] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
+-    var yEnd   = Math.min(bsearch.gt(ticks[1], (dataBox[3] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
+-    var yOffset = yTicksOffset + 6 * yStart
+-    var yCount  = 6 * Math.max(0, yEnd - yStart)
++function formatCompilerError(errLog, src, type) {
++    "use strict";
+ 
+-    SCR_OFFSET[0]         = 2.0 * (viewBox[0] - tickMarkLength[1]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkLength[1] * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkWidth[1]  * pixelRatio / screenHeight
++    var name = shaderName(src) || 'of unknown name (see npm glsl-shader-name)';
+ 
+-    if(yCount) {
+-      uniforms.color        = tickMarkColor[1]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = Y_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
++    var typeName = 'unknown type';
++    if (type !== undefined) {
++        typeName = type === glConstants.FRAGMENT_SHADER ? 'fragment' : 'vertex'
+     }
+ 
+-    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = 2.0 * (viewBox[1] - tickMarkLength[0]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkWidth[0]  * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkLength[0] * pixelRatio / screenHeight
++    var longForm = sprintf('Error compiling %s shader %s:\n', typeName, name);
++    var shortForm = sprintf("%s%s", longForm, errLog);
+ 
+-    if(xCount) {
+-      uniforms.color        = tickMarkColor[0]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = X_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
++    var errorStrings = errLog.split('\n');
++    var errors = {};
++
++    for (var i = 0; i < errorStrings.length; i++) {
++        var errorString = errorStrings[i];
++        if (errorString === '') continue;
++        var lineNo = parseInt(errorString.split(':')[2]);
++        if (isNaN(lineNo)) {
++            throw new Error(sprintf('Could not parse error: %s', errorString));
++        }
++        errors[lineNo] = errorString;
+     }
+ 
+-    SCR_OFFSET[0]         = 2.0 * (viewBox[2] + tickMarkLength[3]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkLength[3] * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkWidth[3]  * pixelRatio / screenHeight
++    var lines = addLineNumbers(src).split('\n');
+ 
+-    if(yCount) {
+-      uniforms.color        = tickMarkColor[3]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = Y_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
++    for (var i = 0; i < lines.length; i++) {
++        if (!errors[i+3] && !errors[i+2] && !errors[i+1]) continue;
++        var line = lines[i];
++        longForm += line + '\n';
++        if (errors[i+1]) {
++            var e = errors[i+1];
++            e = e.substr(e.split(':', 3).join(':').length + 1).trim();
++            longForm += sprintf('^^^ %s\n\n', e);
++        }
+     }
+ 
+-    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = 2.0 * (viewBox[3] + tickMarkLength[2]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkWidth[2]  * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkLength[2] * pixelRatio / screenHeight
++    return {
++        long: longForm.trim(),
++        short: shortForm.trim()
++    };
++}
+ 
+-    if(xCount) {
+-      uniforms.color        = tickMarkColor[2]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = X_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
+-    }
+-  }
+-})()
+ 
+-proto.update = (function() {
+-  var OFFSET_X = [1,  1, -1, -1,  1, -1]
+-  var OFFSET_Y = [1, -1,  1,  1, -1, -1]
++},{"add-line-numbers":24,"gl-constants/lookup":123,"glsl-shader-name":214,"sprintf-js":437}],130:[function(require,module,exports){
+ 
+-  return function(options) {
+-    var ticks  = options.ticks
+-    var bounds = options.bounds
+-    var data   = new Float32Array(6 * 3 * (ticks[0].length + ticks[1].length))
+ 
+-    var zeroLineEnable = this.plot.zeroLineEnable
++exports.lineVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\nvoid main() {\n  vec2 dir = (matrix * vec3(d, 0)).xy;\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = 0.5 * width *\n    normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n}\n"
++exports.lineFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}\n"
++exports.mitreVertex   = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 p;\n\nuniform mat3  matrix;\nuniform vec2 screenShape;\nuniform float radius;\n\nvoid main() {\n  vec3 pp = matrix * vec3(p, 1);\n  gl_Position  = vec4(pp.xy, 0, pp.z);\n  gl_PointSize = radius;\n}\n"
++exports.mitreFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}\n"
++exports.pickVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\nattribute vec4 pick0, pick1;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = width *\n    normalize(screenShape.yx * vec2(d.y, -d.x)) / screenShape.xy;\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}\n"
++exports.pickFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}\n"
++exports.fillVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 projectAxis;\nuniform float projectValue;\nuniform float depth;\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 p = base.xy / base.z;\n  if(d.y < 0.0 || (d.y == 0.0 && d.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}\n"
++exports.fillFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
+ 
+-    var ptr    = 0
+-    var gridTicks = [[], []]
+-    for(var dim=0; dim<2; ++dim) {
+-      var localTicks = gridTicks[dim]
+-      var axisTicks = ticks[dim]
+-      var lo = bounds[dim]
+-      var hi = bounds[dim+2]
+-      for(var i=0; i<axisTicks.length; ++i) {
+-        var x = (axisTicks[i].x - lo) / (hi - lo)
+-        localTicks.push(x)
+-        for(var j=0; j<6; ++j) {
+-          data[ptr++] = x
+-          data[ptr++] = OFFSET_X[j]
+-          data[ptr++] = OFFSET_Y[j]
+-        }
+-      }
+-    }
++},{}],131:[function(require,module,exports){
++'use strict'
+ 
+-    this.ticks = gridTicks
+-    this.vbo.update(data)
+-  }
+-})()
++module.exports = createLinePlot
+ 
+-proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
+-  this.tickShader.dispose()
+-}
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var createTexture = require('gl-texture2d')
++var ndarray = require('ndarray')
++var pool = require('typedarray-pool')
+ 
+-function createGrid(plot) {
+-  var gl     = plot.gl
+-  var vbo    = createBuffer(gl)
+-  var shader = createShader(gl, shaders.gridVert, shaders.gridFrag)
+-  var tickShader = createShader(gl, shaders.tickVert, shaders.gridFrag)
+-  var grid   = new Grid(plot, vbo, shader, tickShader)
+-  return grid
+-}
++var SHADERS = require('./lib/shaders')
+ 
+-},{"./shaders":168,"binary-search-bounds":170,"gl-buffer":124,"gl-shader":203}],167:[function(require,module,exports){
+-'use strict'
++function GLLine2D(
++  plot,
++  dashPattern,
++  lineBuffer,
++  pickBuffer,
++  lineShader,
++  mitreShader,
++  fillShader,
++  pickShader) {
+ 
+-module.exports = createLines
++  this.plot         = plot
++  this.dashPattern  = dashPattern
++  this.lineBuffer   = lineBuffer
++  this.pickBuffer   = pickBuffer
++  this.lineShader   = lineShader
++  this.mitreShader  = mitreShader
++  this.fillShader   = fillShader
++  this.pickShader   = pickShader
++  this.usingDashes  = false
+ 
+-var createBuffer = require('gl-buffer')
+-var createShader = require('gl-shader')
++  this.bounds     = [Infinity, Infinity, -Infinity, -Infinity]
+ 
+-var shaders = require('./shaders')
++  this.width      = 1
++  this.color      = [0,0,1,1]
+ 
+-function Lines(plot, vbo, shader) {
+-  this.plot   = plot
+-  this.vbo    = vbo
+-  this.shader = shader
+-}
++  //Fill to axes
++  this.fill       = [false, false, false, false]
++  this.fillColor  = [[0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1]]
+ 
+-var proto = Lines.prototype
++  this.data       = null
++  this.numPoints  = 0
++  this.vertCount  = 0
+ 
+-proto.bind = function() {
+-  var shader = this.shader
+-  this.vbo.bind()
+-  this.shader.bind()
+-  shader.attributes.coord.pointer()
+-  shader.uniforms.screenBox = this.plot.screenBox
+-}
++  this.pickOffset = 0
+ 
+-proto.drawLine = (function() {
+-  var start = [0,0]
+-  var end   = [0,0]
+-  return function(startX, startY, endX, endY, width, color) {
+-    var plot       = this.plot
+-    var shader     = this.shader
+-    var gl         = plot.gl
++  this.lodBuffer = []
++}
+ 
+-    start[0] = startX
+-    start[1] = startY
+-    end[0]   = endX
+-    end[1]   = endY
++var proto = GLLine2D.prototype
+ 
+-    shader.uniforms.start  = start
+-    shader.uniforms.end    = end
+-    shader.uniforms.width  = width * plot.pixelRatio
+-    shader.uniforms.color  = color
++proto.draw = (function() {
++var MATRIX = [1, 0, 0,
++              0, 1, 0,
++              0, 0, 1]
++var SCREEN_SHAPE = [0,0]
++var PX_AXIS = [1,0]
++var NX_AXIS = [-1,0]
++var PY_AXIS = [0,1]
++var NY_AXIS = [0,-1]
++return function() {
++  var plot      = this.plot
++  var color     = this.color
++  var width     = this.width
++  var numPoints = this.numPoints
++  var bounds    = this.bounds
++  var count     = this.vertCount
+ 
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
++  if(!count) {
++    return
+   }
+-}())
+ 
+-proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
+-}
++  var gl        = plot.gl
++  var viewBox   = plot.viewBox
++  var dataBox   = plot.dataBox
++  var pixelRatio = plot.pixelRatio
+ 
+-function createLines(plot) {
+-  var gl  = plot.gl
+-  var vbo = createBuffer(gl, [
+-    -1,-1,
+-    -1,1,
+-    1,-1,
+-    1,1])
+-  var shader  = createShader(gl, shaders.lineVert, shaders.lineFrag)
+-  var lines   = new Lines(plot, vbo, shader)
+-  return lines
+-}
++  var boundX  = bounds[2] - bounds[0]
++  var boundY  = bounds[3] - bounds[1]
++  var dataX   = dataBox[2] - dataBox[0]
++  var dataY   = dataBox[3] - dataBox[1]
++  var screenX = viewBox[2] - viewBox[0]
++  var screenY = viewBox[3] - viewBox[1]
+ 
+-},{"./shaders":168,"gl-buffer":124,"gl-shader":203}],168:[function(require,module,exports){
+-'use strict'
++  MATRIX[0] = 2.0 * boundX / dataX
++  MATRIX[4] = 2.0 * boundY / dataY
++  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
++  SCREEN_SHAPE[0] = screenX
++  SCREEN_SHAPE[1] = screenY
+ 
++  var buffer    = this.lineBuffer
++  buffer.bind()
+ 
+-var FRAGMENT = "precision lowp float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = vec4(color.xyz * color.w, color.w);\n}\n"
++  var fill = this.fill
+ 
+-module.exports = {
+-  lineVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 start, end;\nuniform float width;\n\nvec2 perp(vec2 v) {\n  return vec2(v.y, -v.x);\n}\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  vec2 delta = normalize(perp(start - end));\n  vec2 offset = mix(start, end, 0.5 * (coord.y+1.0));\n  gl_Position = vec4(screen(offset + 0.5 * width * delta * coord.x), 0, 1);\n}\n",
+-  lineFrag: FRAGMENT,
+-  textVert: "#define GLSLIFY 1\nattribute vec3 textCoordinate;\n\nuniform vec2 dataScale, dataShift, dataAxis, screenOffset, textScale;\nuniform float angle;\n\nvoid main() {\n  float dataOffset  = textCoordinate.z;\n  vec2 glyphOffset  = textCoordinate.xy;\n  mat2 glyphMatrix = mat2(cos(angle), sin(angle), -sin(angle), cos(angle));\n  vec2 screenCoordinate = dataAxis * (dataScale * dataOffset + dataShift) +\n    glyphMatrix * glyphOffset * textScale + screenOffset;\n  gl_Position = vec4(screenCoordinate, 0, 1);\n}\n",
+-  textFrag: FRAGMENT,
+-  gridVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale;\nuniform float lineWidth;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  pos += 10.0 * dataCoord.y * vec2(dataAxis.y, -dataAxis.x) + dataCoord.z * lineWidth;\n  gl_Position = vec4(pos, 0, 1);\n}\n",
+-  gridFrag: FRAGMENT,
+-  boxVert:  "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 lo, hi;\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  gl_Position = vec4(screen(mix(lo, hi, coord)), 0, 1);\n}\n",
+-  tickVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale, screenOffset, tickScale;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  gl_Position = vec4(pos + tickScale*dataCoord.yz + screenOffset, 0, 1);\n}\n"
+-}
++  if(fill[0] || fill[1] || fill[2] || fill[3]) {
+ 
+-},{}],169:[function(require,module,exports){
+-'use strict'
++    var fillShader = this.fillShader
++    fillShader.bind()
+ 
+-module.exports = createTextElements
++    var fillUniforms = fillShader.uniforms
++    fillUniforms.matrix = MATRIX
++    fillUniforms.depth = plot.nextDepthValue()
+ 
+-var createBuffer = require('gl-buffer')
+-var createShader = require('gl-shader')
+-var getText      = require('text-cache')
+-var bsearch      = require('binary-search-bounds')
+-var shaders      = require('./shaders')
++    var fillAttributes = fillShader.attributes
++    fillAttributes.a.pointer(gl.FLOAT, false, 16, 0)
++    fillAttributes.d.pointer(gl.FLOAT, false, 16, 8)
+ 
+-function TextElements(plot, vbo, shader) {
+-  this.plot         = plot
+-  this.vbo          = vbo
+-  this.shader       = shader
+-  this.tickOffset   = [[],[]]
+-  this.tickX        = [[],[]]
+-  this.labelOffset  = [0,0]
+-  this.labelCount   = [0,0]
+-}
++    gl.depthMask(true)
++    gl.enable(gl.DEPTH_TEST)
+ 
+-var proto = TextElements.prototype
++    var fillColor = this.fillColor
++    if(fill[0]) {
++      fillUniforms.color        = fillColor[0]
++      fillUniforms.projectAxis  = NX_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
++    }
+ 
+-proto.drawTicks = (function() {
+-  var DATA_AXIS = [0,0]
+-  var SCREEN_OFFSET = [0,0]
+-  var ZERO_2 = [0,0]
++    if(fill[1]) {
++      fillUniforms.color        = fillColor[1]
++      fillUniforms.projectAxis  = NY_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
++    }
+ 
+-  return function(axis) {
+-    var plot        = this.plot
+-    var shader      = this.shader
+-    var tickX       = this.tickX[axis]
+-    var tickOffset  = this.tickOffset[axis]
+-    var gl          = plot.gl
+-    var viewBox     = plot.viewBox
+-    var dataBox     = plot.dataBox
+-    var screenBox   = plot.screenBox
+-    var pixelRatio  = plot.pixelRatio
+-    var tickEnable  = plot.tickEnable
+-    var tickPad     = plot.tickPad
+-    var textColor   = plot.tickColor
+-    var textAngle   = plot.tickAngle
+-    var tickLength  = plot.tickMarkLength
++    if(fill[2]) {
++      fillUniforms.color        = fillColor[2]
++      fillUniforms.projectAxis  = PX_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
++    }
+ 
+-    var labelEnable = plot.labelEnable
+-    var labelPad    = plot.labelPad
+-    var labelColor  = plot.labelColor
+-    var labelAngle  = plot.labelAngle
+-    var labelOffset = this.labelOffset[axis]
+-    var labelCount  = this.labelCount[axis]
++    if(fill[3]) {
++      fillUniforms.color        = fillColor[3]
++      fillUniforms.projectAxis  = PY_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
++    }
+ 
+-    var start = bsearch.lt(tickX, dataBox[axis])
+-    var end   = bsearch.le(tickX, dataBox[axis+2])
++    gl.depthMask(false)
++    gl.disable(gl.DEPTH_TEST)
++  }
+ 
+-    DATA_AXIS[0]    = DATA_AXIS[1] = 0
+-    DATA_AXIS[axis] = 1
++  var shader    = this.lineShader
++  shader.bind()
+ 
+-    SCREEN_OFFSET[axis] = (viewBox[2+axis] + viewBox[axis]) / (screenBox[2+axis] - screenBox[axis]) - 1.0
++  var uniforms = shader.uniforms
++  uniforms.matrix = MATRIX
++  uniforms.color  = color
++  uniforms.width  = width * pixelRatio
++  uniforms.screenShape = SCREEN_SHAPE
++  uniforms.dashPattern = this.dashPattern.bind()
++  uniforms.dashLength = this.dashLength * pixelRatio
+ 
+-    var screenScale = 2.0 / screenBox[2+(axis^1)] - screenBox[axis^1]
++  var attributes = shader.attributes
++  attributes.a.pointer(gl.FLOAT, false, 16, 0)
++  attributes.d.pointer(gl.FLOAT, false, 16, 8)
+ 
+-    SCREEN_OFFSET[axis^1] = screenScale * viewBox[axis^1] - 1.0
+-    if(tickEnable[axis]) {
+-      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * tickPad[axis]
+-      if(start < end && tickOffset[end] > tickOffset[start]) {
+-        shader.uniforms.dataAxis     = DATA_AXIS
+-        shader.uniforms.screenOffset = SCREEN_OFFSET
+-        shader.uniforms.color        = textColor[axis]
+-        shader.uniforms.angle        = textAngle[axis]
+-        gl.drawArrays(
+-          gl.TRIANGLES,
+-          tickOffset[start],
+-          tickOffset[end] - tickOffset[start])
+-      }
+-    }
+-    if(labelEnable[axis] && labelCount) {
+-      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * labelPad[axis]
+-      shader.uniforms.dataAxis     = ZERO_2
+-      shader.uniforms.screenOffset = SCREEN_OFFSET
+-      shader.uniforms.color        = labelColor[axis]
+-      shader.uniforms.angle        = labelAngle[axis]
+-      gl.drawArrays(
+-        gl.TRIANGLES,
+-        labelOffset,
+-        labelCount)
+-    }
++  gl.drawArrays(gl.TRIANGLES, 0, count)
+ 
+-    SCREEN_OFFSET[axis^1] = screenScale * viewBox[2+(axis^1)] - 1.0
+-    if(tickEnable[axis+2]) {
+-      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * tickPad[axis+2]
+-      if(start < end && tickOffset[end] > tickOffset[start]) {
+-        shader.uniforms.dataAxis     = DATA_AXIS
+-        shader.uniforms.screenOffset = SCREEN_OFFSET
+-        shader.uniforms.color        = textColor[axis+2]
+-        shader.uniforms.angle        = textAngle[axis+2]
+-        gl.drawArrays(
+-          gl.TRIANGLES,
+-          tickOffset[start],
+-          tickOffset[end] - tickOffset[start])
+-      }
+-    }
+-    if(labelEnable[axis+2] && labelCount) {
+-      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * labelPad[axis+2]
+-      shader.uniforms.dataAxis     = ZERO_2
+-      shader.uniforms.screenOffset = SCREEN_OFFSET
+-      shader.uniforms.color        = labelColor[axis+2]
+-      shader.uniforms.angle        = labelAngle[axis+2]
+-      gl.drawArrays(
+-        gl.TRIANGLES,
+-        labelOffset,
+-        labelCount)
+-    }
++  //Draw mitres
++  if(width > 2 && !this.usingDashes) {
++    var mshader = this.mitreShader
++    mshader.bind()
++
++    var muniforms = mshader.uniforms
++    muniforms.matrix = MATRIX
++    muniforms.color  = color
++    muniforms.screenShape = SCREEN_SHAPE
++    muniforms.radius = width * pixelRatio
+ 
++    mshader.attributes.p.pointer(gl.FLOAT, false, 48, 0)
++    gl.drawArrays(gl.POINTS, 0, (count/3)|0)
+   }
++}
+ })()
+ 
+-proto.drawTitle = (function() {
+-  var DATA_AXIS = [0,0]
+-  var SCREEN_OFFSET = [0,0]
++proto.drawPick = (function() {
++  var MATRIX = [1, 0, 0,
++                0, 1, 0,
++                0, 0, 1]
++  var SCREEN_SHAPE = [0,0]
++  var PICK_OFFSET = [0,0,0,0]
++  return function(pickOffset) {
++    var plot      = this.plot
++    var shader    = this.pickShader
++    var buffer    = this.lineBuffer
++    var pickBuffer= this.pickBuffer
++    var width     = this.width
++    var numPoints = this.numPoints
++    var bounds    = this.bounds
++    var count     = this.vertCount
+ 
+-  return function() {
+-    var plot        = this.plot
+-    var shader      = this.shader
+-    var gl          = plot.gl
+-    var screenBox   = plot.screenBox
+-    var titleCenter = plot.titleCenter
+-    var titleAngle  = plot.titleAngle
+-    var titleColor  = plot.titleColor
+-    var titleCenter = plot.titleCenter
+-    var pixelRatio  = plot.pixelRatio
++    var gl        = plot.gl
++    var viewBox   = plot.viewBox
++    var dataBox   = plot.dataBox
++    var pixelRatio = plot.pickPixelRatio
++
++    var boundX  = bounds[2]  - bounds[0]
++    var boundY  = bounds[3]  - bounds[1]
++    var dataX   = dataBox[2] - dataBox[0]
++    var dataY   = dataBox[3] - dataBox[1]
++    var screenX = viewBox[2] - viewBox[0]
++    var screenY = viewBox[3] - viewBox[1]
+ 
+-    if(!this.titleCount) {
+-      return
+-    }
++    this.pickOffset = pickOffset
+ 
+-    for(var i=0; i<2; ++i) {
+-      SCREEN_OFFSET[i] = 2.0 * (titleCenter[i]*pixelRatio - screenBox[i]) /
+-        (screenBox[2+i] - screenBox[i]) - 1
++    if(!count) {
++      return pickOffset + numPoints
+     }
+ 
+-    shader.bind()
+-    shader.uniforms.dataAxis      = DATA_AXIS
+-    shader.uniforms.screenOffset  = SCREEN_OFFSET
+-    shader.uniforms.angle         = titleAngle
+-    shader.uniforms.color         = titleColor
+-
+-    gl.drawArrays(gl.TRIANGLES, this.titleOffset, this.titleCount)
+-  }
+-})()
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-proto.bind = (function() {
+-  var DATA_SHIFT = [0,0]
+-  var DATA_SCALE = [0,0]
+-  var TEXT_SCALE = [0,0]
++    SCREEN_SHAPE[0] = screenX
++    SCREEN_SHAPE[1] = screenY
+ 
+-  return function() {
+-    var plot      = this.plot
+-    var shader    = this.shader
+-    var bounds    = plot._tickBounds
+-    var dataBox   = plot.dataBox
+-    var screenBox = plot.screenBox
+-    var viewBox   = plot.viewBox
++    PICK_OFFSET[0] =  pickOffset       & 0xff
++    PICK_OFFSET[1] = (pickOffset>>>8)  & 0xff
++    PICK_OFFSET[2] = (pickOffset>>>16) & 0xff
++    PICK_OFFSET[3] =  pickOffset>>>24
+ 
+     shader.bind()
+ 
+-    //Set up coordinate scaling uniforms
+-    for(var i=0; i<2; ++i) {
+-
+-      var lo = bounds[i]
+-      var hi = bounds[i+2]
+-      var boundScale = hi - lo
+-      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
+-      var dataWidth   = (dataBox[i+2] - dataBox[i])
++    var uniforms = shader.uniforms
++    uniforms.matrix      = MATRIX
++    uniforms.width       = width * pixelRatio
++    uniforms.pickOffset  = PICK_OFFSET
++    uniforms.screenShape = SCREEN_SHAPE
+ 
+-      var viewLo = viewBox[i]
+-      var viewHi = viewBox[i+2]
+-      var viewScale = viewHi - viewLo
+-      var screenLo = screenBox[i]
+-      var screenHi = screenBox[i+2]
+-      var screenScale = screenHi - screenLo
++    var attributes = shader.attributes
+ 
+-      DATA_SCALE[i] = 2.0 * boundScale / dataWidth * viewScale / screenScale
+-      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth * viewScale / screenScale
+-    }
++    buffer.bind()
++    attributes.a.pointer(gl.FLOAT, false, 16, 0)
++    attributes.d.pointer(gl.FLOAT, false, 16, 8)
+ 
+-    TEXT_SCALE[1] = 2.0 * plot.pixelRatio / (screenBox[3] - screenBox[1])
+-    TEXT_SCALE[0] = TEXT_SCALE[1] * (screenBox[3] - screenBox[1]) / (screenBox[2] - screenBox[0])
++    pickBuffer.bind()
++    attributes.pick0.pointer(gl.UNSIGNED_BYTE, false, 8, 0)
++    attributes.pick1.pointer(gl.UNSIGNED_BYTE, false, 8, 4)
+ 
+-    shader.uniforms.dataScale = DATA_SCALE
+-    shader.uniforms.dataShift = DATA_SHIFT
+-    shader.uniforms.textScale = TEXT_SCALE
++    gl.drawArrays(gl.TRIANGLES, 0, count)
+ 
+-    //Set attributes
+-    this.vbo.bind()
+-    shader.attributes.textCoordinate.pointer()
++    return pickOffset + numPoints
+   }
+ })()
+ 
+-proto.update = function(options) {
+-  var vertices  = []
+-  var axesTicks = options.ticks
+-  var bounds    = options.bounds
++proto.pick = function(x, y, value) {
++  var pickOffset = this.pickOffset
++  var pointCount = this.numPoints
++  if(value < pickOffset || value >= pickOffset + pointCount) {
++    return null
++  }
++  var pointId = value - pickOffset
++  var points = this.data
++  return {
++    object:    this,
++    pointId:   pointId,
++    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
++  }
++}
+ 
+-  for(var dimension=0; dimension<2; ++dimension) {
+-    var offsets = [Math.floor(vertices.length/3)], tickX = [-Infinity]
++function deepCopy(arr) {
++  return arr.map(function(x) {
++    return x.slice()
++  })
++}
+ 
+-    //Copy vertices over to buffer
+-    var ticks = axesTicks[dimension]
+-    for(var i=0; i<ticks.length; ++i) {
+-      var tick  = ticks[i]
+-      var x     = tick.x
+-      var text  = tick.text
+-      var font  = tick.font || 'sans-serif'
+-      var scale = (tick.fontSize || 12)
++proto.update = function(options) {
++  options = options || {}
+ 
+-      var data = getText(font, text).data
++  var gl = this.plot.gl
+ 
+-      var coordScale = 1.0 / (bounds[dimension+2] - bounds[dimension])
+-      var coordShift = bounds[dimension]
++  var connectGaps = !!options.connectGaps
+ 
+-      for(var j=0; j<data.length; j+=2) {
+-        vertices.push(
+-           data[j]  *scale,
+-          -data[j+1]*scale,
+-          (x - coordShift) * coordScale)
+-      }
++  this.color = (options.color || [0,0,1,1]).slice()
++  this.width = +(options.width || 1)
+ 
+-      offsets.push(Math.floor(vertices.length/3))
+-      tickX.push(x)
+-    }
++  this.fill      = (options.fill || [false,false,false,false]).slice()
++  this.fillColor = deepCopy(options.fillColor || [[0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1]])
+ 
+-    this.tickOffset[dimension] = offsets
+-    this.tickX[dimension] = tickX
++  var dashes = options.dashes || [1]
++  var dashLength = 0
++  for(var i=0; i<dashes.length; ++i) {
++    dashLength += dashes[i]
+   }
+-
+-  //Add labels
+-  for(var dimension=0; dimension<2; ++dimension) {
+-    this.labelOffset[dimension] = Math.floor(vertices.length/3)
+-
+-    var data  = getText(options.labelFont[dimension], options.labels[dimension]).data
+-    var scale = options.labelSize[dimension]
+-    for(var i=0; i<data.length; i+=2) {
+-      vertices.push(data[i]*scale, -data[i+1]*scale, 0)
++  var dashData = pool.mallocUint8(dashLength)
++  var ptr = 0
++  var fillColor = 255
++  for(var i=0; i<dashes.length; ++i) {
++    for(var j=0; j<dashes[i]; ++j) {
++      dashData[ptr++] = fillColor
+     }
+-
+-    this.labelCount[dimension] =
+-      Math.floor(vertices.length/3) - this.labelOffset[dimension]
++    fillColor ^= 255
+   }
++  this.dashPattern.dispose()
++  this.usingDashes = dashes.length > 1
+ 
+-  //Add title
+-  this.titleOffset = Math.floor(vertices.length/3)
+-  var data = getText(options.titleFont, options.title).data
+-  var scale = options.titleSize
+-  for(var i=0; i<data.length; i+=2) {
+-    vertices.push(data[i]*scale, -data[i+1]*scale, 0)
+-  }
+-  this.titleCount = Math.floor(vertices.length/3) - this.titleOffset
++  this.dashPattern = createTexture(gl,
++    ndarray(dashData, [dashLength, 1, 4], [1, 0, 0]))
++  this.dashPattern.minFilter = gl.NEAREST
++  this.dashPattern.magFilter = gl.NEAREST
++  this.dashLength = dashLength
++  pool.free(dashData)
+ 
+-  //Upload new vertices
+-  this.vbo.update(vertices)
+-}
++  var data = options.positions
++  this.data = data
+ 
+-proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
+-}
++  var bounds = this.bounds
++  bounds[0] = bounds[1] = Infinity
++  bounds[2] = bounds[3] = -Infinity
+ 
+-function createTextElements(plot) {
+-  var gl = plot.gl
+-  var vbo = createBuffer(gl)
+-  var shader = createShader(gl, shaders.textVert, shaders.textFrag)
+-  var text = new TextElements(plot, vbo, shader)
+-  return text
+-}
++  var numPoints = this.numPoints = data.length>>>1
++  if(numPoints === 0) {
++    return
++  }
+ 
+-},{"./shaders":168,"binary-search-bounds":170,"gl-buffer":124,"gl-shader":203,"text-cache":453}],170:[function(require,module,exports){
+-arguments[4][68][0].apply(exports,arguments)
+-},{"dup":68}],171:[function(require,module,exports){
+-'use strict'
++  for(var i=0; i<numPoints; ++i) {
++    var ax = data[2*i]
++    var ay = data[2*i+1]
+ 
+-module.exports = createGLPlot2D
++    if (isNaN(ax) || isNaN(ay)) {
++      continue
++    }
+ 
+-var createPick = require('gl-select-static')
++    bounds[0] = Math.min(bounds[0], ax)
++    bounds[1] = Math.min(bounds[1], ay)
++    bounds[2] = Math.max(bounds[2], ax)
++    bounds[3] = Math.max(bounds[3], ay)
++  }
+ 
+-var createGrid = require('./lib/grid')
+-var createText = require('./lib/text')
+-var createLine = require('./lib/line')
+-var createBox  = require('./lib/box')
++  if(bounds[0] === bounds[2]) {
++    bounds[2] += 1
++  }
++  if(bounds[3] === bounds[1]) {
++    bounds[3] += 1
++  }
+ 
+-function GLPlot2D(gl, pickBuffer) {
+-  this.gl               = gl
+-  this.pickBuffer       = pickBuffer
++  //Generate line data
++  var lineData    = pool.mallocFloat32(24*(numPoints-1))
++  var pickData    = pool.mallocUint32(12*(numPoints-1))
++  var lineDataPtr = lineData.length
++  var pickDataPtr = pickData.length
++  var ptr = numPoints
+ 
+-  this.screenBox        = [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight]
+-  this.viewBox          = [0, 0, 0, 0]
+-  this.dataBox          = [-10, -10, 10, 10]
++  var count = 0
+ 
+-  this.gridLineEnable   = [true,true]
+-  this.gridLineWidth    = [1,1]
+-  this.gridLineColor    = [[0,0,0,1],
+-                           [0,0,0,1]]
++  while(ptr > 1) {
++    var id = --ptr
++    var ax = data[2*ptr]
++    var ay = data[2*ptr+1]
+ 
+-  this.pixelRatio       = 1
++    var next = id-1
++    var bx = data[2*next]
++    var by = data[2*next+1]
+ 
+-  this.tickMarkLength   = [0,0,0,0]
+-  this.tickMarkWidth    = [0,0,0,0]
+-  this.tickMarkColor    = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++    if (isNaN(ax) || isNaN(ay) || isNaN(bx) || isNaN(by)) {
++      continue
++    }
+ 
+-  this.tickPad          = [15,15,15,15]
+-  this.tickAngle        = [0,0,0,0]
+-  this.tickEnable       = [true,true,true,true]
+-  this.tickColor        = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++    count += 1
+ 
+-  this.labelPad         = [15,15,15,15]
+-  this.labelAngle       = [0,Math.PI/2,0,3.0*Math.PI/2]
+-  this.labelEnable      = [true,true,true,true]
+-  this.labelColor       = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++    ax = (ax - bounds[0]) / (bounds[2] - bounds[0])
++    ay = (ay - bounds[1]) / (bounds[3] - bounds[1])
+ 
+-  this.titleCenter      = [0,0]
+-  this.titleEnable      = true
+-  this.titleAngle       = 0
+-  this.titleColor       = [0,0,0,1]
++    bx = (bx - bounds[0]) / (bounds[2] - bounds[0])
++    by = (by - bounds[1]) / (bounds[3] - bounds[1])
+ 
+-  this.borderColor      = [0,0,0,0]
+-  this.backgroundColor  = [0,0,0,0]
++    var dx = bx - ax
++    var dy = by - ay
+ 
+-  this.zeroLineEnable   = [true, true]
+-  this.zeroLineWidth    = [4, 4]
+-  this.zeroLineColor    = [[0, 0, 0, 1],[0, 0, 0, 1]]
++    var akey0 = id     | (1<<24)
++    var akey1 = (id-1)
++    var bkey0 = id
++    var bkey1 = (id-1) | (1<<24)
+ 
+-  this.borderLineEnable = [true,true,true,true]
+-  this.borderLineWidth  = [2,2,2,2]
+-  this.borderLineColor  = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++    lineData[--lineDataPtr] = -dy
++    lineData[--lineDataPtr] = -dx
++    lineData[--lineDataPtr] = ay
++    lineData[--lineDataPtr] = ax
++    pickData[--pickDataPtr] = akey0
++    pickData[--pickDataPtr] = akey1
+ 
+-  //Drawing parameters
+-  this.grid             = null
+-  this.text             = null
+-  this.line             = null
+-  this.box              = null
+-  this.objects          = []
+-  this.overlays         = []
++    lineData[--lineDataPtr] = dy
++    lineData[--lineDataPtr] = dx
++    lineData[--lineDataPtr] = by
++    lineData[--lineDataPtr] = bx
++    pickData[--pickDataPtr] = bkey0
++    pickData[--pickDataPtr] = bkey1
+ 
+-  this._tickBounds      = [Infinity, Infinity, -Infinity, -Infinity]
++    lineData[--lineDataPtr] = -dy
++    lineData[--lineDataPtr] = -dx
++    lineData[--lineDataPtr] = by
++    lineData[--lineDataPtr] = bx
++    pickData[--pickDataPtr] = bkey0
++    pickData[--pickDataPtr] = bkey1
+ 
+-  this.dirty        = false
+-  this.pickDirty    = false
+-  this.pickDelay    = 120
+-  this.pickRadius   = 10
+-  this._pickTimeout = null
+-  this._drawPick    = this.drawPick.bind(this)
++    lineData[--lineDataPtr] = dy
++    lineData[--lineDataPtr] = dx
++    lineData[--lineDataPtr] = by
++    lineData[--lineDataPtr] = bx
++    pickData[--pickDataPtr] = bkey0
++    pickData[--pickDataPtr] = bkey1
+ 
+-  this._depthCounter = 0
+-}
++    lineData[--lineDataPtr] = -dy
++    lineData[--lineDataPtr] = -dx
++    lineData[--lineDataPtr] = ay
++    lineData[--lineDataPtr] = ax
++    pickData[--pickDataPtr] = akey0
++    pickData[--pickDataPtr] = akey1
+ 
+-var proto = GLPlot2D.prototype
++    lineData[--lineDataPtr] = dy
++    lineData[--lineDataPtr] = dx
++    lineData[--lineDataPtr] = ay
++    lineData[--lineDataPtr] = ax
++    pickData[--pickDataPtr] = akey0
++    pickData[--pickDataPtr] = akey1
++  }
+ 
+-proto.setDirty = function() {
+-  this.dirty = this.pickDirty = true
+-}
++  this.vertCount = 6 * count
++  this.lineBuffer.update(lineData.subarray(lineDataPtr))
++  this.pickBuffer.update(pickData.subarray(pickDataPtr))
+ 
+-proto.setOverlayDirty = function() {
+-  this.dirty = true
++  pool.free(lineData)
++  pool.free(pickData)
+ }
+ 
+-proto.nextDepthValue = function() {
+-  return (this._depthCounter++) / 65536.0
++proto.dispose = function() {
++  this.plot.removeObject(this)
++  this.lineBuffer.dispose()
++  this.pickBuffer.dispose()
++  this.lineShader.dispose()
++  this.mitreShader.dispose()
++  this.fillShader.dispose()
++  this.pickShader.dispose()
++  this.dashPattern.dispose()
+ }
+ 
+-function lerp(a, b, t) {
+-  var s = 0.5 * (t + 1.0)
+-  return Math.floor((1.0-s)*a + s*b)|0
++function createLinePlot(plot, options) {
++  var gl = plot.gl
++  var lineBuffer  = createBuffer(gl)
++  var pickBuffer  = createBuffer(gl)
++  var dashPattern = createTexture(gl, [1,1])
++  var lineShader  = createShader(gl, SHADERS.lineVertex,  SHADERS.lineFragment)
++  var mitreShader = createShader(gl, SHADERS.mitreVertex, SHADERS.mitreFragment)
++  var fillShader  = createShader(gl, SHADERS.fillVertex,  SHADERS.fillFragment)
++  var pickShader  = createShader(gl, SHADERS.pickVertex,  SHADERS.pickFragment)
++  var linePlot    = new GLLine2D(
++    plot,
++    dashPattern,
++    lineBuffer,
++    pickBuffer,
++    lineShader,
++    mitreShader,
++    fillShader,
++    pickShader)
++  plot.addObject(linePlot)
++  linePlot.update(options)
++  return linePlot
+ }
+ 
+-proto.draw = (function() {
+-var TICK_MARK_BOX = [0,0,0,0]
+-return function() {
+-  var gl         = this.gl
+-  var screenBox  = this.screenBox
+-  var viewPixels = this.viewBox
+-  var dataBox    = this.dataBox
+-  var pixelRatio = this.pixelRatio
+-  var grid       = this.grid
+-  var line       = this.line
+-  var text       = this.text
+-  var objects    = this.objects
+-
+-  this._depthCounter = 0
+-
+-  if(this.pickDirty) {
+-    if(this._pickTimeout) {
+-      clearTimeout(this._pickTimeout)
+-    }
+-    this.pickDirty = false
+-    this._pickTimeout = setTimeout(this._drawPick, this.pickDelay)
+-  }
+-
+-  if(!this.dirty) {
+-    return
+-  }
+-  this.dirty = false
+-
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-
+-  //Turn on scissor
+-  gl.enable(gl.SCISSOR_TEST)
+-
+-  //Turn off depth buffer
+-  gl.disable(gl.DEPTH_TEST)
+-  gl.depthFunc(gl.LESS)
+-  gl.depthMask(false)
+-
+-  //Configure premultiplied alpha blending
+-  gl.enable(gl.BLEND)
+-  gl.blendEquation(gl.FUNC_ADD, gl.FUNC_ADD);
+-  gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+-
+-  //Draw border
+-  gl.scissor(
+-    screenBox[0],
+-    screenBox[1],
+-    screenBox[2]-screenBox[0],
+-    screenBox[3]-screenBox[1])
+-  var borderColor = this.borderColor
+-  gl.clearColor(
+-    borderColor[0]*borderColor[3],
+-    borderColor[1]*borderColor[3],
+-    borderColor[2]*borderColor[3],
+-    borderColor[3])
+-  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+-
+-  //Draw center pane
+-  gl.scissor(
+-    viewPixels[0],
+-    viewPixels[1],
+-    viewPixels[2]-viewPixels[0],
+-    viewPixels[3]-viewPixels[1])
+-  gl.viewport(
+-    viewPixels[0],
+-    viewPixels[1],
+-    viewPixels[2]-viewPixels[0],
+-    viewPixels[3]-viewPixels[1])
+-  var backgroundColor = this.backgroundColor
+-  gl.clearColor(
+-    backgroundColor[0]*backgroundColor[3],
+-    backgroundColor[1]*backgroundColor[3],
+-    backgroundColor[2]*backgroundColor[3],
+-    backgroundColor[3])
+-  gl.clear(gl.COLOR_BUFFER_BIT)
+-
+-  //Draw grid
+-  grid.draw()
++},{"./lib/shaders":130,"gl-buffer":121,"gl-shader":190,"gl-texture2d":202,"ndarray":385,"typedarray-pool":449}],132:[function(require,module,exports){
+ 
+-  //Draw zero lines separately
+-  var zeroLineEnable = this.zeroLineEnable
+-  var zeroLineColor  = this.zeroLineColor
+-  var zeroLineWidth  = this.zeroLineWidth
+-  if(zeroLineEnable[0] || zeroLineEnable[1]) {
+-    line.bind()
+-    for(var i=0; i<2; ++i) {
+-      if(!zeroLineEnable[i] ||
+-        !(dataBox[i] <= 0 && dataBox[i+2] >= 0)) {
+-        continue
+-      }
++var createShader  = require('gl-shader')
+ 
+-      var zeroIntercept = screenBox[i] -
+-        dataBox[i] * (screenBox[i+2] - screenBox[i]) / (dataBox[i+2] - dataBox[i])
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, nextPosition;\nattribute float arcLength, lineWidth;\nattribute vec4 color;\n\nuniform vec2 screenShape;\nuniform float pixelRatio;\nuniform mat4 model, view, projection;\n\nvarying vec4 fragColor;\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\n\nvoid main() {\n  vec4 projected = projection * view * model * vec4(position, 1.0);\n  vec4 tangentClip = projection * view * model * vec4(nextPosition - position, 0.0);\n  vec2 tangent = normalize(screenShape * tangentClip.xy);\n  vec2 offset = 0.5 * pixelRatio * lineWidth * vec2(tangent.y, -tangent.x) / screenShape;\n\n  gl_Position = vec4(projected.xy + projected.w * offset, projected.zw);\n\n  worldPosition = position;\n  pixelArcLength = arcLength;\n  fragColor = color;\n}\n"
++var forwardFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3      clipBounds[2];\nuniform sampler2D dashTexture;\nuniform float     dashScale;\nuniform float     opacity;\n\nvarying vec3    worldPosition;\nvarying float   pixelArcLength;\nvarying vec4    fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  float dashWeight = texture2D(dashTexture, vec2(dashScale * pixelArcLength, 0)).r;\n  if(dashWeight < 0.5) {\n    discard;\n  }\n  gl_FragColor = fragColor * opacity;\n}\n"
++var pickFrag = "precision mediump float;\n#define GLSLIFY 1\n\n#define FLOAT_MAX  1.70141184e38\n#define FLOAT_MIN  1.17549435e-38\n\nlowp vec4 encode_float_1_0(highp float v) {\n  highp float av = abs(v);\n\n  //Handle special cases\n  if(av < FLOAT_MIN) {\n    return vec4(0.0, 0.0, 0.0, 0.0);\n  } else if(v > FLOAT_MAX) {\n    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;\n  } else if(v < -FLOAT_MAX) {\n    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;\n  }\n\n  highp vec4 c = vec4(0,0,0,0);\n\n  //Compute exponent and mantissa\n  highp float e = floor(log2(av));\n  highp float m = av * pow(2.0, -e) - 1.0;\n  \n  //Unpack mantissa\n  c[1] = floor(128.0 * m);\n  m -= c[1] / 128.0;\n  c[2] = floor(32768.0 * m);\n  m -= c[2] / 32768.0;\n  c[3] = floor(8388608.0 * m);\n  \n  //Unpack exponent\n  highp float ebias = e + 127.0;\n  c[0] = floor(ebias / 2.0);\n  ebias -= c[0] * 2.0;\n  c[1] += floor(ebias) * 128.0; \n\n  //Unpack sign bit\n  c[0] += 128.0 * step(0.0, -v);\n\n  //Scale back to range\n  return c / 255.0;\n}\n\n\n\nuniform float pickId;\nuniform vec3 clipBounds[2];\n\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId/255.0, encode_float_1_0(pixelArcLength).xyz);\n}"
+ 
+-      if(i === 0) {
+-        line.drawLine(
+-          zeroIntercept, screenBox[1], zeroIntercept, screenBox[3],
+-          zeroLineWidth[i],
+-          zeroLineColor[i])
+-      } else {
+-        line.drawLine(
+-          screenBox[0], zeroIntercept, screenBox[2], zeroIntercept,
+-          zeroLineWidth[i],
+-          zeroLineColor[i])
+-      }
+-    }
+-  }
++var ATTRIBUTES = [
++  {name: 'position', type: 'vec3'},
++  {name: 'nextPosition', type: 'vec3'},
++  {name: 'arcLength', type: 'float'},
++  {name: 'lineWidth', type: 'float'},
++  {name: 'color', type: 'vec4'}
++]
+ 
+-  //Draw traces
+-  for(var i=0; i<objects.length; ++i) {
+-    objects[i].draw()
+-  }
++exports.createShader = function(gl) {
++  return createShader(gl, vertSrc, forwardFrag, null, ATTRIBUTES)
++}
+ 
+-  //Return viewport to default
+-  gl.viewport(
+-    screenBox[0],
+-    screenBox[1],
+-    screenBox[2]-screenBox[0],
+-    screenBox[3]-screenBox[1])
+-  gl.scissor(
+-    screenBox[0],
+-    screenBox[1],
+-    screenBox[2]-screenBox[0],
+-    screenBox[3]-screenBox[1])
++exports.createPickShader = function(gl) {
++  return createShader(gl, vertSrc, pickFrag, null, ATTRIBUTES)
++}
+ 
+-  //Draw tick marks
+-  this.grid.drawTickMarks()
++},{"gl-shader":190}],133:[function(require,module,exports){
++'use strict'
+ 
+-  //Draw line elements
+-  line.bind()
++module.exports = createLinePlot
+ 
+-  //Draw border lines
+-  var borderLineEnable = this.borderLineEnable
+-  var borderLineWidth  = this.borderLineWidth
+-  var borderLineColor  = this.borderLineColor
+-  if(borderLineEnable[1]) {
+-    line.drawLine(
+-      viewPixels[0], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
+-      viewPixels[0], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
+-      borderLineWidth[1], borderLineColor[1])
+-  }
+-  if(borderLineEnable[0]) {
+-    line.drawLine(
+-      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[1],
+-      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[1],
+-      borderLineWidth[0], borderLineColor[0])
+-  }
+-  if(borderLineEnable[3]) {
+-    line.drawLine(
+-      viewPixels[2], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
+-      viewPixels[2], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
+-      borderLineWidth[3], borderLineColor[3])
+-  }
+-  if(borderLineEnable[2]) {
+-    line.drawLine(
+-      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[3],
+-      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[3],
+-      borderLineWidth[2], borderLineColor[2])
+-  }
++var createBuffer = require('gl-buffer')
++var createVAO = require('gl-vao')
++var createTexture = require('gl-texture2d')
++var unpackFloat = require('glsl-read-float')
++var bsearch = require('binary-search-bounds')
++var ndarray = require('ndarray')
++var shaders = require('./lib/shaders')
+ 
+-  //Draw text elements
+-  text.bind()
+-  for(var i=0; i<2; ++i) {
+-    text.drawTicks(i)
+-  }
+-  if(this.titleEnable) {
+-    text.drawTitle()
++var createShader = shaders.createShader
++var createPickShader = shaders.createPickShader
++
++var identity = [1, 0, 0, 0,
++  0, 1, 0, 0,
++  0, 0, 1, 0,
++  0, 0, 0, 1]
++
++function distance (a, b) {
++  var s = 0.0
++  for (var i = 0; i < 3; ++i) {
++    var d = a[i] - b[i]
++    s += d * d
+   }
++  return Math.sqrt(s)
++}
+ 
+-  //Draw other overlay elements (select boxes, etc.)
+-  var overlays = this.overlays
+-  for(var i=0; i<overlays.length; ++i) {
+-    overlays[i].draw()
++function filterClipBounds (bounds) {
++  var result = [[-1e6, -1e6, -1e6], [1e6, 1e6, 1e6]]
++  for (var i = 0; i < 3; ++i) {
++    result[0][i] = Math.max(bounds[0][i], result[0][i])
++    result[1][i] = Math.min(bounds[1][i], result[1][i])
+   }
++  return result
++}
+ 
+-  //Turn off scissor test
+-  gl.disable(gl.SCISSOR_TEST)
+-  gl.disable(gl.BLEND)
+-  gl.depthMask(true)
++function PickResult (tau, position, index, dataCoordinate) {
++  this.arcLength = tau
++  this.position = position
++  this.index = index
++  this.dataCoordinate = dataCoordinate
+ }
+-})()
+ 
+-proto.drawPick = (function() {
++function LinePlot (gl, shader, pickShader, buffer, vao, texture) {
++  this.gl = gl
++  this.shader = shader
++  this.pickShader = pickShader
++  this.buffer = buffer
++  this.vao = vao
++  this.clipBounds = [
++    [ -Infinity, -Infinity, -Infinity ],
++    [ Infinity, Infinity, Infinity ]]
++  this.points = []
++  this.arcLength = []
++  this.vertexCount = 0
++  this.bounds = [[0, 0, 0], [0, 0, 0]]
++  this.pickId = 0
++  this.lineWidth = 1
++  this.texture = texture
++  this.dashScale = 1
++  this.opacity = 1
++  this.dirty = true
++  this.pixelRatio = 1
++}
+ 
+-return function() {
+-  var pickBuffer = this.pickBuffer
+-  var gl = this.gl
++var proto = LinePlot.prototype
+ 
+-  this._pickTimeout = null
+-  pickBuffer.begin()
++proto.isTransparent = function () {
++  return this.opacity < 1
++}
+ 
+-  var pickOffset = 1
+-  var objects = this.objects
+-  for(var i=0; i<objects.length; ++i) {
+-    pickOffset = objects[i].drawPick(pickOffset)
++proto.isOpaque = function () {
++  return this.opacity >= 1
++}
++
++proto.pickSlots = 1
++
++proto.setPickBase = function (id) {
++  this.pickId = id
++}
++
++proto.drawTransparent = proto.draw = function (camera) {
++  var gl = this.gl
++  var shader = this.shader
++  var vao = this.vao
++  shader.bind()
++  shader.uniforms = {
++    model: camera.model || identity,
++    view: camera.view || identity,
++    projection: camera.projection || identity,
++    clipBounds: filterClipBounds(this.clipBounds),
++    dashTexture: this.texture.bind(),
++    dashScale: this.dashScale / this.arcLength[this.arcLength.length - 1],
++    opacity: this.opacity,
++    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
++    pixelRatio: this.pixelRatio
+   }
++  vao.bind()
++  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
++}
+ 
+-  pickBuffer.end()
++proto.drawPick = function (camera) {
++  var gl = this.gl
++  var shader = this.pickShader
++  var vao = this.vao
++  shader.bind()
++  shader.uniforms = {
++    model: camera.model || identity,
++    view: camera.view || identity,
++    projection: camera.projection || identity,
++    pickId: this.pickId,
++    clipBounds: filterClipBounds(this.clipBounds),
++    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
++    pixelRatio: this.pixelRatio
++  }
++  vao.bind()
++  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
+ }
+-})()
+ 
+-proto.pick = (function() {
+-return function(x, y) {
+-  var pixelRatio     = this.pixelRatio
+-  var pickPixelRatio = this.pickPixelRatio
+-  var viewBox        = this.viewBox
++proto.update = function (options) {
++  var i, j
+ 
+-  var scrX = Math.round((x - viewBox[0] / pixelRatio) * pickPixelRatio)|0
+-  var scrY = Math.round((y - viewBox[1] / pixelRatio) * pickPixelRatio)|0
++  this.dirty = true
+ 
+-  var pickResult = this.pickBuffer.query(scrX, scrY, this.pickRadius)
+-  if(!pickResult) {
+-    return null
+-  }
++  var connectGaps = !!options.connectGaps
+ 
+-  var pickValue = pickResult.id +
+-    (pickResult.value[0]<<8)  +
+-    (pickResult.value[1]<<16) +
+-    (pickResult.value[2]<<24)
++  if ('dashScale' in options) {
++    this.dashScale = options.dashScale
++  }
++  if ('opacity' in options) {
++    this.opacity = +options.opacity
++  }
+ 
+-  var objects = this.objects
+-  for(var i=0; i<objects.length; ++i) {
+-    var result = objects[i].pick(scrX, scrY, pickValue)
+-    if(result) {
+-      return result
+-    }
++  var positions = options.position || options.positions
++  if (!positions) {
++    return
+   }
+ 
+-  return null
+-}
+-})()
++  // Default color
++  var colors = options.color || options.colors || [0, 0, 0, 1]
+ 
+-function deepClone(array) {
+-  var result = array.slice()
+-  for(var i=0; i<result.length; ++i) {
+-    result[i] = result[i].slice()
+-  }
+-  return result
+-}
++  var lineWidth = options.lineWidth || 1
+ 
+-function compareTicks(a, b) {
+-  return a.x - b.x
+-}
++  // Recalculate buffer data
++  var buffer = []
++  var arcLengthArray = []
++  var pointArray = []
++  var arcLength = 0.0
++  var vertexCount = 0
++  var bounds = [
++    [ Infinity, Infinity, Infinity ],
++    [ -Infinity, -Infinity, -Infinity ]]
++  var hadGap = false
+ 
+-proto.setScreenBox = function(nbox) {
+-  var screenBox = this.screenBox
+-  var pixelRatio = this.pixelRatio
++  fill_loop:
++  for (i = 1; i < positions.length; ++i) {
++    var a = positions[i - 1]
++    var b = positions[i]
+ 
+-  screenBox[0] = Math.round(nbox[0] * pixelRatio) | 0
+-  screenBox[1] = Math.round(nbox[1] * pixelRatio) | 0
+-  screenBox[2] = Math.round(nbox[2] * pixelRatio) | 0
+-  screenBox[3] = Math.round(nbox[3] * pixelRatio) | 0
++    arcLengthArray.push(arcLength)
++    pointArray.push(a.slice())
+ 
+-  this.setDirty()
+-}
++    for (j = 0; j < 3; ++j) {
++      if (isNaN(a[j]) || isNaN(b[j]) ||
++        !isFinite(a[j]) || !isFinite(b[j])) {
+ 
+-proto.setDataBox = function(nbox) {
+-  var dataBox = this.dataBox
++        if (!connectGaps && buffer.length > 0) {
++          for (var k = 0; k < 24; ++k) {
++            buffer.push(buffer[buffer.length - 12])
++          }
++          vertexCount += 2
++          hadGap = true
++        }
+ 
+-  var different =
+-    dataBox[0] !== nbox[0] ||
+-    dataBox[1] !== nbox[1] ||
+-    dataBox[2] !== nbox[2] ||
+-    dataBox[3] !== nbox[3]
++        continue fill_loop
++      }
++      bounds[0][j] = Math.min(bounds[0][j], a[j], b[j])
++      bounds[1][j] = Math.max(bounds[1][j], a[j], b[j])
++    }
+ 
+-  if(different) {
+-    dataBox[0] = nbox[0]
+-    dataBox[1] = nbox[1]
+-    dataBox[2] = nbox[2]
+-    dataBox[3] = nbox[3]
++    var acolor, bcolor
++    if (Array.isArray(colors[0])) {
++      acolor = colors[i - 1]
++      bcolor = colors[i]
++    } else {
++      acolor = bcolor = colors
++    }
++    if (acolor.length === 3) {
++      acolor = [acolor[0], acolor[1], acolor[2], 1]
++    }
++    if (bcolor.length === 3) {
++      bcolor = [bcolor[0], bcolor[1], bcolor[2], 1]
++    }
+ 
+-    this.setDirty()
+-  }
+-}
++    var w0
++    if (Array.isArray(lineWidth)) {
++      w0 = lineWidth[i - 1]
++    } else {
++      w0 = lineWidth
++    }
+ 
+-proto.setViewBox = function(nbox) {
+-  var pixelRatio = this.pixelRatio
+-  var viewBox = this.viewBox
++    var t0 = arcLength
++    arcLength += distance(a, b)
+ 
+-  viewBox[0] = Math.round(nbox[0] * pixelRatio)|0
+-  viewBox[1] = Math.round(nbox[1] * pixelRatio)|0
+-  viewBox[2] = Math.round(nbox[2] * pixelRatio)|0
+-  viewBox[3] = Math.round(nbox[3] * pixelRatio)|0
++    if (hadGap) {
++      for (j = 0; j < 2; ++j) {
++        buffer.push(
++          a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3])
++      }
++      vertexCount += 2
++      hadGap = false
++    }
+ 
+-  var pickPixelRatio = this.pickPixelRatio
+-  this.pickBuffer.shape = [
+-    Math.round((nbox[2] - nbox[0]) * pickPixelRatio)|0,
+-    Math.round((nbox[3] - nbox[1]) * pickPixelRatio)|0 ]
++    buffer.push(
++      a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3],
++      a[0], a[1], a[2], b[0], b[1], b[2], t0, -w0, acolor[0], acolor[1], acolor[2], acolor[3],
++      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, -w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3],
++      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3])
+ 
+-  this.setDirty()
+-}
++    vertexCount += 4
++  }
++  this.buffer.update(buffer)
+ 
+-proto.update = function(options) {
+-  options = options || {}
++  arcLengthArray.push(arcLength)
++  pointArray.push(positions[positions.length - 1].slice())
+ 
+-  var gl = this.gl
++  this.bounds = bounds
+ 
+-  this.pixelRatio      = options.pixelRatio || 1
++  this.vertexCount = vertexCount
+ 
+-  var pixelRatio       = this.pixelRatio
+-  this.pickPixelRatio  = Math.max(pixelRatio, 1)
++  this.points = pointArray
++  this.arcLength = arcLengthArray
+ 
+-  this.setScreenBox(options.screenBox ||
+-    [0, 0, gl.drawingBufferWidth/pixelRatio, gl.drawingBufferHeight/pixelRatio])
++  if ('dashes' in options) {
++    var dashArray = options.dashes
+ 
+-  var screenBox = this.screenBox
+-  this.setViewBox(options.viewBox ||
+-    [0.125*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
+-     0.125*(this.screenBox[3]-this.screenBox[1])/pixelRatio,
+-     0.875*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
+-     0.875*(this.screenBox[3]-this.screenBox[1])/pixelRatio])
++    // Calculate prefix sum
++    var prefixSum = dashArray.slice()
++    prefixSum.unshift(0)
++    for (i = 1; i < prefixSum.length; ++i) {
++      prefixSum[i] = prefixSum[i - 1] + prefixSum[i]
++    }
+ 
+-  var viewBox = this.viewBox
+-  var aspectRatio = (viewBox[2] - viewBox[0]) / (viewBox[3] - viewBox[1])
+-  this.setDataBox(options.dataBox || [-10, -10/aspectRatio, 10, 10/aspectRatio])
++    var dashTexture = ndarray(new Array(256 * 4), [256, 1, 4])
++    for (i = 0; i < 256; ++i) {
++      for (j = 0; j < 4; ++j) {
++        dashTexture.set(i, 0, j, 0)
++      }
++      if (bsearch.le(prefixSum, prefixSum[prefixSum.length - 1] * i / 255.0) & 1) {
++        dashTexture.set(i, 0, 0, 0)
++      } else {
++        dashTexture.set(i, 0, 0, 255)
++      }
++    }
+ 
+-  this.borderColor     = (options.borderColor     || [0,0,0,0]).slice()
+-  this.backgroundColor = (options.backgroundColor || [0,0,0,0]).slice()
++    this.texture.setPixels(dashTexture)
++  }
++}
+ 
+-  this.gridLineEnable  = (options.gridLineEnable || [true,true]).slice()
+-  this.gridLineWidth   = (options.gridLineWidth || [1,1]).slice()
+-  this.gridLineColor   = deepClone(options.gridLineColor ||
+-    [[0.5,0.5,0.5,1],[0.5,0.5,0.5,1]])
++proto.dispose = function () {
++  this.shader.dispose()
++  this.vao.dispose()
++  this.buffer.dispose()
++}
+ 
+-  this.zeroLineEnable   = (options.zeroLineEnable || [true, true]).slice()
+-  this.zeroLineWidth    = (options.zeroLineWidth || [4, 4]).slice()
+-  this.zeroLineColor    = deepClone(options.zeroLineColor ||
+-    [[0, 0, 0, 1],[0, 0, 0, 1]])
++proto.pick = function (selection) {
++  if (!selection) {
++    return null
++  }
++  if (selection.id !== this.pickId) {
++    return null
++  }
++  var tau = unpackFloat(
++    selection.value[0],
++    selection.value[1],
++    selection.value[2],
++    0)
++  var index = bsearch.le(this.arcLength, tau)
++  if (index < 0) {
++    return null
++  }
++  if (index === this.arcLength.length - 1) {
++    return new PickResult(
++      this.arcLength[this.arcLength.length - 1],
++      this.points[this.points.length - 1].slice(),
++      index)
++  }
++  var a = this.points[index]
++  var b = this.points[Math.min(index + 1, this.points.length - 1)]
++  var t = (tau - this.arcLength[index]) / (this.arcLength[index + 1] - this.arcLength[index])
++  var ti = 1.0 - t
++  var x = [0, 0, 0]
++  for (var i = 0; i < 3; ++i) {
++    x[i] = ti * a[i] + t * b[i]
++  }
++  var dataIndex = Math.min((t < 0.5) ? index : (index + 1), this.points.length - 1)
++  return new PickResult(
++    tau,
++    x,
++    dataIndex,
++    this.points[dataIndex])
++}
+ 
+-  this.tickMarkLength   = (options.tickMarkLength || [0,0,0,0]).slice()
+-  this.tickMarkWidth    = (options.tickMarkWidth || [0,0,0,0]).slice()
+-  this.tickMarkColor    = deepClone(options.tickMarkColor ||
+-    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++function createLinePlot (options) {
++  var gl = options.gl || (options.scene && options.scene.gl)
+ 
+-  this.titleCenter      = (options.titleCenter || [
+-    0.5*(viewBox[0]+viewBox[2])/pixelRatio,(viewBox[3]+120)/pixelRatio]).slice()
+-  this.titleEnable      = !('titleEnable' in options) || !!options.titleEnable
+-  this.titleAngle       = options.titleAngle || 0
+-  this.titleColor       = (options.titleColor || [0,0,0,1]).slice()
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  shader.attributes.nextPosition.location = 1
++  shader.attributes.arcLength.location = 2
++  shader.attributes.lineWidth.location = 3
++  shader.attributes.color.location = 4
+ 
+-  this.labelPad         = (options.labelPad || [15,15,15,15]).slice()
+-  this.labelAngle       = (options.labelAngle ||
+-    [0,Math.PI/2,0,3.0*Math.PI/2]).slice()
+-  this.labelEnable      = (options.labelEnable || [true,true,true,true]).slice()
+-  this.labelColor       = deepClone(options.labelColor ||
+-    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++  var pickShader = createPickShader(gl)
++  pickShader.attributes.position.location = 0
++  pickShader.attributes.nextPosition.location = 1
++  pickShader.attributes.arcLength.location = 2
++  pickShader.attributes.lineWidth.location = 3
++  pickShader.attributes.color.location = 4
+ 
+-  this.tickPad         = (options.tickPad || [15,15,15,15]).slice()
+-  this.tickAngle       = (options.tickAngle || [0,0,0,0]).slice()
+-  this.tickEnable      = (options.tickEnable || [true,true,true,true]).slice()
+-  this.tickColor       = deepClone(options.tickColor ||
+-    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++  var buffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++    {
++      'buffer': buffer,
++      'size': 3,
++      'offset': 0,
++      'stride': 48
++    },
++    {
++      'buffer': buffer,
++      'size': 3,
++      'offset': 12,
++      'stride': 48
++    },
++    {
++      'buffer': buffer,
++      'size': 1,
++      'offset': 24,
++      'stride': 48
++    },
++    {
++      'buffer': buffer,
++      'size': 1,
++      'offset': 28,
++      'stride': 48
++    },
++    {
++      'buffer': buffer,
++      'size': 4,
++      'offset': 32,
++      'stride': 48
++    }
++  ])
++
++  // Create texture for dash pattern
++  var defaultTexture = ndarray(new Array(256 * 4), [256, 1, 4])
++  for (var i = 0; i < 256 * 4; ++i) {
++    defaultTexture.data[i] = 255
++  }
++  var texture = createTexture(gl, defaultTexture)
++  texture.wrap = gl.REPEAT
+ 
+-  this.borderLineEnable = (options.borderLineEnable ||
+-                            [true,true,true,true]).slice()
+-  this.borderLineWidth  = (options.borderLineWidth || [2,2,2,2]).slice()
+-  this.borderLineColor  = deepClone(options.borderLineColor ||
+-                          [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]])
++  var linePlot = new LinePlot(gl, shader, pickShader, buffer, vao, texture)
++  linePlot.update(options)
++  return linePlot
++}
+ 
+-  var ticks = options.ticks || [ [], [] ]
++},{"./lib/shaders":132,"binary-search-bounds":48,"gl-buffer":121,"gl-texture2d":202,"gl-vao":206,"glsl-read-float":213,"ndarray":385}],134:[function(require,module,exports){
++module.exports = invert
+ 
+-  //Compute bounds on ticks
+-  var bounds = this._tickBounds
+-  bounds[0] = bounds[1] =  Infinity
+-  bounds[2] = bounds[3] = -Infinity
+-  for(var i=0; i<2; ++i) {
+-    var axisTicks = ticks[i].slice(0)
+-    if(axisTicks.length === 0) {
+-      continue
+-    }
+-    axisTicks.sort(compareTicks)
+-    bounds[i]   = Math.min(bounds[i], axisTicks[0].x)
+-    bounds[i+2] = Math.max(bounds[i+2], axisTicks[axisTicks.length-1].x)
+-  }
++/**
++ * Inverts a mat2
++ *
++ * @alias mat2.invert
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++function invert(out, a) {
++  var a0 = a[0]
++  var a1 = a[1]
++  var a2 = a[2]
++  var a3 = a[3]
++  var det = a0 * a3 - a2 * a1
+ 
+-  //Update grid
+-  this.grid.update({
+-    bounds: bounds,
+-    ticks:  ticks
+-  })
++  if (!det) return null
++  det = 1.0 / det
+ 
+-  //Update text
+-  this.text.update({
+-    bounds:     bounds,
+-    ticks:      ticks,
+-    labels:     options.labels    || ['x', 'y'],
+-    labelSize:  options.labelSize || [12,12],
+-    labelFont:  options.labelFont || ['sans-serif', 'sans-serif'],
+-    title:      options.title     || '',
+-    titleSize:  options.titleSize || 18,
+-    titleFont:  options.titleFont || 'sans-serif'
+-  })
++  out[0] =  a3 * det
++  out[1] = -a1 * det
++  out[2] = -a2 * det
++  out[3] =  a0 * det
+ 
+-  this.setDirty()
++  return out
+ }
+ 
+-proto.dispose = function() {
+-  this.box.dispose()
+-  this.grid.dispose()
+-  this.text.dispose()
+-  this.line.dispose()
+-  for(var i=this.objects.length-1; i>=0; --i) {
+-    this.objects[i].dispose()
+-  }
+-  this.objects.length = 0
+-  for(var i=this.overlays.length-1; i>=0; --i) {
+-    this.overlays[i].dispose()
+-  }
+-  this.overlays.length = 0
++},{}],135:[function(require,module,exports){
++module.exports = invert
+ 
+-  this.gl = null
+-}
++/**
++ * Inverts a mat3
++ *
++ * @alias mat3.invert
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++function invert(out, a) {
++  var a00 = a[0], a01 = a[1], a02 = a[2]
++  var a10 = a[3], a11 = a[4], a12 = a[5]
++  var a20 = a[6], a21 = a[7], a22 = a[8]
+ 
+-proto.addObject = function(object) {
+-  if(this.objects.indexOf(object) < 0) {
+-    this.objects.push(object)
+-    this.setDirty()
+-  }
+-}
++  var b01 = a22 * a11 - a12 * a21
++  var b11 = -a22 * a10 + a12 * a20
++  var b21 = a21 * a10 - a11 * a20
+ 
+-proto.removeObject = function(object) {
+-  var objects = this.objects
+-  for(var i=0; i<objects.length; ++i) {
+-    if(objects[i] === object) {
+-      objects.splice(i,1)
+-      this.setDirty()
+-      break
+-    }
+-  }
+-}
++  // Calculate the determinant
++  var det = a00 * b01 + a01 * b11 + a02 * b21
+ 
+-proto.addOverlay = function(object) {
+-  if(this.overlays.indexOf(object) < 0) {
+-    this.overlays.push(object)
+-    this.setOverlayDirty()
+-  }
+-}
++  if (!det) return null
++  det = 1.0 / det
+ 
+-proto.removeOverlay = function(object) {
+-  var objects = this.overlays
+-  for(var i=0; i<objects.length; ++i) {
+-    if(objects[i] === object) {
+-      objects.splice(i,1)
+-      this.setOverlayDirty()
+-      break
+-    }
+-  }
+-}
++  out[0] = b01 * det
++  out[1] = (-a22 * a01 + a02 * a21) * det
++  out[2] = (a12 * a01 - a02 * a11) * det
++  out[3] = b11 * det
++  out[4] = (a22 * a00 - a02 * a20) * det
++  out[5] = (-a12 * a00 + a02 * a10) * det
++  out[6] = b21 * det
++  out[7] = (-a21 * a00 + a01 * a20) * det
++  out[8] = (a11 * a00 - a01 * a10) * det
+ 
+-function createGLPlot2D(options) {
+-  var gl = options.gl
+-  var pickBuffer = createPick(gl, [
+-    gl.drawingBufferWidth, gl.drawingBufferHeight])
+-  var plot = new GLPlot2D(gl, pickBuffer)
+-  plot.grid = createGrid(plot)
+-  plot.text = createText(plot)
+-  plot.line = createLine(plot)
+-  plot.box  = createBox(plot)
+-  plot.update(options)
+-  return plot
++  return out
+ }
+ 
+-},{"./lib/box":165,"./lib/grid":166,"./lib/line":167,"./lib/text":169,"gl-select-static":202}],172:[function(require,module,exports){
++},{}],136:[function(require,module,exports){
++module.exports = clone;
+ 
+-var createShader = require('gl-shader')
++/**
++ * Creates a new mat4 initialized with values from an existing matrix
++ *
++ * @param {mat4} a matrix to clone
++ * @returns {mat4} a new 4x4 matrix
++ */
++function clone(a) {
++    var out = new Float32Array(16);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    out[9] = a[9];
++    out[10] = a[10];
++    out[11] = a[11];
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
++},{}],137:[function(require,module,exports){
++module.exports = create;
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\nattribute vec2 position;\nvarying vec2 uv;\nvoid main() {\n  uv = position;\n  gl_Position = vec4(position, 0, 1);\n}"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D accumBuffer;\nvarying vec2 uv;\n\nvoid main() {\n  vec4 accum = texture2D(accumBuffer, 0.5 * (uv + 1.0));\n  gl_FragColor = min(vec4(1,1,1,1), accum);\n}"
++/**
++ * Creates a new identity mat4
++ *
++ * @returns {mat4} a new 4x4 matrix
++ */
++function create() {
++    var out = new Float32Array(16);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
++},{}],138:[function(require,module,exports){
++module.exports = determinant;
+ 
+-module.exports = function(gl) {
+-  return createShader(gl, vertSrc, fragSrc, null, [ { name: 'position', type: 'vec2'}])
+-}
++/**
++ * Calculates the determinant of a mat4
++ *
++ * @param {mat4} a the source matrix
++ * @returns {Number} determinant of a
++ */
++function determinant(a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-},{"gl-shader":203}],173:[function(require,module,exports){
+-'use strict'
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32;
+ 
+-module.exports = createCamera
++    // Calculate the determinant
++    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++};
++},{}],139:[function(require,module,exports){
++module.exports = fromQuat;
+ 
+-var now         = require('right-now')
+-var createView  = require('3d-view')
+-var mouseChange = require('mouse-change')
+-var mouseWheel  = require('mouse-wheel')
++/**
++ * Creates a matrix from a quaternion rotation.
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @returns {mat4} out
++ */
++function fromQuat(out, q) {
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-function createCamera(element, options) {
+-  element = element || document.body
+-  options = options || {}
++        xx = x * x2,
++        yx = y * x2,
++        yy = y * y2,
++        zx = z * x2,
++        zy = z * y2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-  var limits  = [ 0.01, Infinity ]
+-  if('distanceLimits' in options) {
+-    limits[0] = options.distanceLimits[0]
+-    limits[1] = options.distanceLimits[1]
+-  }
+-  if('zoomMin' in options) {
+-    limits[0] = options.zoomMin
+-  }
+-  if('zoomMax' in options) {
+-    limits[1] = options.zoomMax
+-  }
++    out[0] = 1 - yy - zz;
++    out[1] = yx + wz;
++    out[2] = zx - wy;
++    out[3] = 0;
+ 
+-  var view = createView({
+-    center: options.center || [0,0,0],
+-    up:     options.up     || [0,1,0],
+-    eye:    options.eye    || [0,0,10],
+-    mode:   options.mode   || 'orbit',
+-    distanceLimits: limits
+-  })
++    out[4] = yx - wz;
++    out[5] = 1 - xx - zz;
++    out[6] = zy + wx;
++    out[7] = 0;
+ 
+-  var pmatrix = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+-  var distance = 0.0
+-  var width   = element.clientWidth
+-  var height  = element.clientHeight
++    out[8] = zx + wy;
++    out[9] = zy - wx;
++    out[10] = 1 - xx - yy;
++    out[11] = 0;
+ 
+-  var camera = {
+-    view:               view,
+-    element:            element,
+-    delay:              options.delay          || 16,
+-    rotateSpeed:        options.rotateSpeed    || 1,
+-    zoomSpeed:          options.zoomSpeed      || 1,
+-    translateSpeed:     options.translateSpeed || 1,
+-    flipX:              !!options.flipX,
+-    flipY:              !!options.flipY,
+-    modes:              view.modes,
+-    tick: function() {
+-      var t = now()
+-      var delay = this.delay
+-      view.idle(t-delay)
+-      view.flush(t-(100+delay*2))
+-      var ctime = t - 2 * delay
+-      view.recalcMatrix(ctime)
+-      var allEqual = true
+-      var matrix = view.computedMatrix
+-      for(var i=0; i<16; ++i) {
+-        allEqual = allEqual && (pmatrix[i] === matrix[i])
+-        pmatrix[i] = matrix[i]
+-      }
+-      var sizeChanged = 
+-          element.clientWidth === width && 
+-          element.clientHeight === height
+-      width  = element.clientWidth
+-      height = element.clientHeight
+-      if(allEqual) {
+-        return !sizeChanged
+-      }
+-      distance = Math.exp(view.computedRadius[0])
+-      return true
+-    },
+-    lookAt: function(center, eye, up) {
+-      view.lookAt(view.lastT(), center, eye, up)
+-    },
+-    rotate: function(pitch, yaw, roll) {
+-      view.rotate(view.lastT(), pitch, yaw, roll)
+-    },
+-    pan: function(dx, dy, dz) {
+-      view.pan(view.lastT(), dx, dy, dz)
+-    },
+-    translate: function(dx, dy, dz) {
+-      view.translate(view.lastT(), dx, dy, dz)
+-    }
+-  }
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
+ 
+-  Object.defineProperties(camera, {
+-    matrix: {
+-      get: function() {
+-        return view.computedMatrix
+-      },
+-      set: function(mat) {
+-        view.setMatrix(view.lastT(), mat)
+-        return view.computedMatrix
+-      },
+-      enumerable: true
+-    },
+-    mode: {
+-      get: function() {
+-        return view.getMode()
+-      },
+-      set: function(mode) {
+-        view.setMode(mode)
+-        return view.getMode()
+-      },
+-      enumerable: true
+-    },
+-    center: {
+-      get: function() {
+-        return view.computedCenter
+-      },
+-      set: function(ncenter) {
+-        view.lookAt(view.lastT(), ncenter)
+-        return view.computedCenter
+-      },
+-      enumerable: true
+-    },
+-    eye: {
+-      get: function() {
+-        return view.computedEye
+-      },
+-      set: function(neye) {
+-        view.lookAt(view.lastT(), null, neye)
+-        return view.computedEye
+-      },
+-      enumerable: true
+-    },
+-    up: {
+-      get: function() {
+-        return view.computedUp
+-      },
+-      set: function(nup) {
+-        view.lookAt(view.lastT(), null, null, nup)
+-        return view.computedUp
+-      },
+-      enumerable: true
+-    },
+-    distance: {
+-      get: function() {
+-        return distance
+-      },
+-      set: function(d) {
+-        view.setDistance(view.lastT(), d)
+-        return d
+-      },
+-      enumerable: true
+-    },
+-    distanceLimits: {
+-      get: function() {
+-        return view.getDistanceLimits(limits)
+-      },
+-      set: function(v) {
+-        view.setDistanceLimits(v)
+-        return v
+-      },
+-      enumerable: true
++    return out;
++};
++},{}],140:[function(require,module,exports){
++module.exports = fromRotationTranslation;
++
++/**
++ * Creates a matrix from a quaternion rotation and vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @returns {mat4} out
++ */
++function fromRotationTranslation(out, q, v) {
++    // Quaternion math
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
++
++        xx = x * x2,
++        xy = x * y2,
++        xz = x * z2,
++        yy = y * y2,
++        yz = y * z2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
++
++    out[0] = 1 - (yy + zz);
++    out[1] = xy + wz;
++    out[2] = xz - wy;
++    out[3] = 0;
++    out[4] = xy - wz;
++    out[5] = 1 - (xx + zz);
++    out[6] = yz + wx;
++    out[7] = 0;
++    out[8] = xz + wy;
++    out[9] = yz - wx;
++    out[10] = 1 - (xx + yy);
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
++    
++    return out;
++};
++},{}],141:[function(require,module,exports){
++module.exports = identity;
++
++/**
++ * Set a mat4 to the identity matrix
++ *
++ * @param {mat4} out the receiving matrix
++ * @returns {mat4} out
++ */
++function identity(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
++},{}],142:[function(require,module,exports){
++module.exports = invert;
++
++/**
++ * Inverts a mat4
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++function invert(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32,
++
++        // Calculate the determinant
++        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++
++    if (!det) { 
++        return null; 
+     }
+-  })
+-  
+-  element.addEventListener('contextmenu', function(ev) {
+-    ev.preventDefault()
+-    return false
+-  })
++    det = 1.0 / det;
+ 
+-  var lastX = 0, lastY = 0
+-  mouseChange(element, function(buttons, x, y, mods) {
+-    var scale = 1.0 / element.clientHeight
+-    var dx    = scale * (x - lastX)
+-    var dy    = scale * (y - lastY)
++    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
++    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
++    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
++    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
++    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
++    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
++    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
++    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
++    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
++    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
++    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
++    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
++    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
++    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
++    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
++    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
+ 
+-    var flipX = camera.flipX ? 1 : -1
+-    var flipY = camera.flipY ? 1 : -1
++    return out;
++};
++},{}],143:[function(require,module,exports){
++var identity = require('./identity');
+ 
+-    var drot  = Math.PI * camera.rotateSpeed
++module.exports = lookAt;
+ 
+-    var t = now()
++/**
++ * Generates a look-at matrix with the given eye position, focal point, and up axis
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {vec3} eye Position of the viewer
++ * @param {vec3} center Point the viewer is looking at
++ * @param {vec3} up vec3 pointing up
++ * @returns {mat4} out
++ */
++function lookAt(out, eye, center, up) {
++    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
++        eyex = eye[0],
++        eyey = eye[1],
++        eyez = eye[2],
++        upx = up[0],
++        upy = up[1],
++        upz = up[2],
++        centerx = center[0],
++        centery = center[1],
++        centerz = center[2];
+ 
+-    if(buttons & 1) {
+-      if(mods.shift) {
+-        view.rotate(t, 0, 0, -dx * drot)
+-      } else {
+-        view.rotate(t, flipX * drot * dx, -flipY * drot * dy, 0)
+-      }
+-    } else if(buttons & 2) {
+-      view.pan(t, -camera.translateSpeed * dx * distance, camera.translateSpeed * dy * distance, 0)
+-    } else if(buttons & 4) {
+-      var kzoom = camera.zoomSpeed * dy / window.innerHeight * (t - view.lastT()) * 50.0
+-      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
++    if (Math.abs(eyex - centerx) < 0.000001 &&
++        Math.abs(eyey - centery) < 0.000001 &&
++        Math.abs(eyez - centerz) < 0.000001) {
++        return identity(out);
+     }
+ 
+-    lastX = x
+-    lastY = y
+-  })
++    z0 = eyex - centerx;
++    z1 = eyey - centery;
++    z2 = eyez - centerz;
+ 
+-  mouseWheel(element, function(dx, dy, dz) {
+-    var flipX = camera.flipX ? 1 : -1
+-    var flipY = camera.flipY ? 1 : -1
+-    var t = now()
+-    if(Math.abs(dx) > Math.abs(dy)) {
+-      view.rotate(t, 0, 0, -dx * flipX * Math.PI * camera.rotateSpeed / window.innerWidth)
++    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
++    z0 *= len;
++    z1 *= len;
++    z2 *= len;
++
++    x0 = upy * z2 - upz * z1;
++    x1 = upz * z0 - upx * z2;
++    x2 = upx * z1 - upy * z0;
++    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
++    if (!len) {
++        x0 = 0;
++        x1 = 0;
++        x2 = 0;
+     } else {
+-      var kzoom = camera.zoomSpeed * flipY * dy / window.innerHeight * (t - view.lastT()) / 100.0
+-      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
++        len = 1 / len;
++        x0 *= len;
++        x1 *= len;
++        x2 *= len;
+     }
+-  }, true)
+ 
+-  return camera
+-}
+-},{"3d-view":40,"mouse-change":421,"mouse-wheel":425,"right-now":435}],174:[function(require,module,exports){
+-// Copyright (C) 2011 Google Inc.
+-//
+-// Licensed under the Apache License, Version 2.0 (the "License");
+-// you may not use this file except in compliance with the License.
+-// You may obtain a copy of the License at
+-//
+-// http://www.apache.org/licenses/LICENSE-2.0
+-//
+-// Unless required by applicable law or agreed to in writing, software
+-// distributed under the License is distributed on an "AS IS" BASIS,
+-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-// See the License for the specific language governing permissions and
+-// limitations under the License.
++    y0 = z1 * x2 - z2 * x1;
++    y1 = z2 * x0 - z0 * x2;
++    y2 = z0 * x1 - z1 * x0;
++
++    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
++    if (!len) {
++        y0 = 0;
++        y1 = 0;
++        y2 = 0;
++    } else {
++        len = 1 / len;
++        y0 *= len;
++        y1 *= len;
++        y2 *= len;
++    }
++
++    out[0] = x0;
++    out[1] = y0;
++    out[2] = z0;
++    out[3] = 0;
++    out[4] = x1;
++    out[5] = y1;
++    out[6] = z1;
++    out[7] = 0;
++    out[8] = x2;
++    out[9] = y2;
++    out[10] = z2;
++    out[11] = 0;
++    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
++    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
++    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
++    out[15] = 1;
++
++    return out;
++};
++},{"./identity":141}],144:[function(require,module,exports){
++module.exports = multiply;
+ 
+ /**
+- * @fileoverview Install a leaky WeakMap emulation on platforms that
+- * don't provide a built-in one.
+- *
+- * <p>Assumes that an ES5 platform where, if {@code WeakMap} is
+- * already present, then it conforms to the anticipated ES6
+- * specification. To run this file on an ES5 or almost ES5
+- * implementation where the {@code WeakMap} specification does not
+- * quite conform, run <code>repairES5.js</code> first.
+- *
+- * <p>Even though WeakMapModule is not global, the linter thinks it
+- * is, which is why it is in the overrides list below.
+- *
+- * <p>NOTE: Before using this WeakMap emulation in a non-SES
+- * environment, see the note below about hiddenRecord.
++ * Multiplies two mat4's
+  *
+- * @author Mark S. Miller
+- * @requires crypto, ArrayBuffer, Uint8Array, navigator, console
+- * @overrides WeakMap, ses, Proxy
+- * @overrides WeakMapModule
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
+  */
++function multiply(out, a, b) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
++
++    // Cache only the current line of the second matrix
++    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];  
++    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++
++    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
++    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++
++    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
++    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++
++    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
++    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    return out;
++};
++},{}],145:[function(require,module,exports){
++module.exports = perspective;
+ 
+ /**
+- * This {@code WeakMap} emulation is observably equivalent to the
+- * ES-Harmony WeakMap, but with leakier garbage collection properties.
+- *
+- * <p>As with true WeakMaps, in this emulation, a key does not
+- * retain maps indexed by that key and (crucially) a map does not
+- * retain the keys it indexes. A map by itself also does not retain
+- * the values associated with that map.
+- *
+- * <p>However, the values associated with a key in some map are
+- * retained so long as that key is retained and those associations are
+- * not overridden. For example, when used to support membranes, all
+- * values exported from a given membrane will live for the lifetime
+- * they would have had in the absence of an interposed membrane. Even
+- * when the membrane is revoked, all objects that would have been
+- * reachable in the absence of revocation will still be reachable, as
+- * far as the GC can tell, even though they will no longer be relevant
+- * to ongoing computation.
+- *
+- * <p>The API implemented here is approximately the API as implemented
+- * in FF6.0a1 and agreed to by MarkM, Andreas Gal, and Dave Herman,
+- * rather than the offially approved proposal page. TODO(erights):
+- * upgrade the ecmascript WeakMap proposal page to explain this API
+- * change and present to EcmaScript committee for their approval.
+- *
+- * <p>The first difference between the emulation here and that in
+- * FF6.0a1 is the presence of non enumerable {@code get___, has___,
+- * set___, and delete___} methods on WeakMap instances to represent
+- * what would be the hidden internal properties of a primitive
+- * implementation. Whereas the FF6.0a1 WeakMap.prototype methods
+- * require their {@code this} to be a genuine WeakMap instance (i.e.,
+- * an object of {@code [[Class]]} "WeakMap}), since there is nothing
+- * unforgeable about the pseudo-internal method names used here,
+- * nothing prevents these emulated prototype methods from being
+- * applied to non-WeakMaps with pseudo-internal methods of the same
+- * names.
++ * Generates a perspective projection matrix with the given bounds
+  *
+- * <p>Another difference is that our emulated {@code
+- * WeakMap.prototype} is not itself a WeakMap. A problem with the
+- * current FF6.0a1 API is that WeakMap.prototype is itself a WeakMap
+- * providing ambient mutability and an ambient communications
+- * channel. Thus, if a WeakMap is already present and has this
+- * problem, repairES5.js wraps it in a safe wrappper in order to
+- * prevent access to this channel. (See
+- * PATCH_MUTABLE_FROZEN_WEAKMAP_PROTO in repairES5.js).
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {number} fovy Vertical field of view in radians
++ * @param {number} aspect Aspect ratio. typically viewport width/height
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
+  */
++function perspective(out, fovy, aspect, near, far) {
++    var f = 1.0 / Math.tan(fovy / 2),
++        nf = 1 / (near - far);
++    out[0] = f / aspect;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = f;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = (far + near) * nf;
++    out[11] = -1;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = (2 * far * near) * nf;
++    out[15] = 0;
++    return out;
++};
++},{}],146:[function(require,module,exports){
++module.exports = rotate;
+ 
+ /**
+- * If this is a full <a href=
+- * "http://code.google.com/p/es-lab/wiki/SecureableES5"
+- * >secureable ES5</a> platform and the ES-Harmony {@code WeakMap} is
+- * absent, install an approximate emulation.
+- *
+- * <p>If WeakMap is present but cannot store some objects, use our approximate
+- * emulation as a wrapper.
+- *
+- * <p>If this is almost a secureable ES5 platform, then WeakMap.js
+- * should be run after repairES5.js.
++ * Rotates a mat4 by the given angle
+  *
+- * <p>See {@code WeakMap} for documentation of the garbage collection
+- * properties of this WeakMap emulation.
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @param {vec3} axis the axis to rotate around
++ * @returns {mat4} out
+  */
+-(function WeakMapModule() {
+-  "use strict";
++function rotate(out, a, rad, axis) {
++    var x = axis[0], y = axis[1], z = axis[2],
++        len = Math.sqrt(x * x + y * y + z * z),
++        s, c, t,
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23,
++        b00, b01, b02,
++        b10, b11, b12,
++        b20, b21, b22;
+ 
+-  if (typeof ses !== 'undefined' && ses.ok && !ses.ok()) {
+-    // already too broken, so give up
+-    return;
+-  }
++    if (Math.abs(len) < 0.000001) { return null; }
++    
++    len = 1 / len;
++    x *= len;
++    y *= len;
++    z *= len;
+ 
+-  /**
+-   * In some cases (current Firefox), we must make a choice betweeen a
+-   * WeakMap which is capable of using all varieties of host objects as
+-   * keys and one which is capable of safely using proxies as keys. See
+-   * comments below about HostWeakMap and DoubleWeakMap for details.
+-   *
+-   * This function (which is a global, not exposed to guests) marks a
+-   * WeakMap as permitted to do what is necessary to index all host
+-   * objects, at the cost of making it unsafe for proxies.
+-   *
+-   * Do not apply this function to anything which is not a genuine
+-   * fresh WeakMap.
+-   */
+-  function weakMapPermitHostObjects(map) {
+-    // identity of function used as a secret -- good enough and cheap
+-    if (map.permitHostObjects___) {
+-      map.permitHostObjects___(weakMapPermitHostObjects);
+-    }
+-  }
+-  if (typeof ses !== 'undefined') {
+-    ses.weakMapPermitHostObjects = weakMapPermitHostObjects;
+-  }
++    s = Math.sin(rad);
++    c = Math.cos(rad);
++    t = 1 - c;
+ 
+-  // IE 11 has no Proxy but has a broken WeakMap such that we need to patch
+-  // it using DoubleWeakMap; this flag tells DoubleWeakMap so.
+-  var doubleWeakMapCheckSilentFailure = false;
++    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-  // Check if there is already a good-enough WeakMap implementation, and if so
+-  // exit without replacing it.
+-  if (typeof WeakMap === 'function') {
+-    var HostWeakMap = WeakMap;
+-    // There is a WeakMap -- is it good enough?
+-    if (typeof navigator !== 'undefined' &&
+-        /Firefox/.test(navigator.userAgent)) {
+-      // We're now *assuming not*, because as of this writing (2013-05-06)
+-      // Firefox's WeakMaps have a miscellany of objects they won't accept, and
+-      // we don't want to make an exhaustive list, and testing for just one
+-      // will be a problem if that one is fixed alone (as they did for Event).
++    // Construct the elements of the rotation matrix
++    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
++    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
++    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
+ 
+-      // If there is a platform that we *can* reliably test on, here's how to
+-      // do it:
+-      //  var problematic = ... ;
+-      //  var testHostMap = new HostWeakMap();
+-      //  try {
+-      //    testHostMap.set(problematic, 1);  // Firefox 20 will throw here
+-      //    if (testHostMap.get(problematic) === 1) {
+-      //      return;
+-      //    }
+-      //  } catch (e) {}
++    // Perform rotation-specific matrix multiplication
++    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
++    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
++    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
++    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
++    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
++    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
++    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
++    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
++    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
++    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
++    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
++    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
+ 
+-    } else {
+-      // IE 11 bug: WeakMaps silently fail to store frozen objects.
+-      var testMap = new HostWeakMap();
+-      var testObject = Object.freeze({});
+-      testMap.set(testObject, 1);
+-      if (testMap.get(testObject) !== 1) {
+-        doubleWeakMapCheckSilentFailure = true;
+-        // Fall through to installing our WeakMap.
+-      } else {
+-        module.exports = WeakMap;
+-        return;
+-      }
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+-  }
+-
+-  var hop = Object.prototype.hasOwnProperty;
+-  var gopn = Object.getOwnPropertyNames;
+-  var defProp = Object.defineProperty;
+-  var isExtensible = Object.isExtensible;
++    return out;
++};
++},{}],147:[function(require,module,exports){
++module.exports = rotateX;
+ 
+-  /**
+-   * Security depends on HIDDEN_NAME being both <i>unguessable</i> and
+-   * <i>undiscoverable</i> by untrusted code.
+-   *
+-   * <p>Given the known weaknesses of Math.random() on existing
+-   * browsers, it does not generate unguessability we can be confident
+-   * of.
+-   *
+-   * <p>It is the monkey patching logic in this file that is intended
+-   * to ensure undiscoverability. The basic idea is that there are
+-   * three fundamental means of discovering properties of an object:
+-   * The for/in loop, Object.keys(), and Object.getOwnPropertyNames(),
+-   * as well as some proposed ES6 extensions that appear on our
+-   * whitelist. The first two only discover enumerable properties, and
+-   * we only use HIDDEN_NAME to name a non-enumerable property, so the
+-   * only remaining threat should be getOwnPropertyNames and some
+-   * proposed ES6 extensions that appear on our whitelist. We monkey
+-   * patch them to remove HIDDEN_NAME from the list of properties they
+-   * returns.
+-   *
+-   * <p>TODO(erights): On a platform with built-in Proxies, proxies
+-   * could be used to trap and thereby discover the HIDDEN_NAME, so we
+-   * need to monkey patch Proxy.create, Proxy.createFunction, etc, in
+-   * order to wrap the provided handler with the real handler which
+-   * filters out all traps using HIDDEN_NAME.
+-   *
+-   * <p>TODO(erights): Revisit Mike Stay's suggestion that we use an
+-   * encapsulated function at a not-necessarily-secret name, which
+-   * uses the Stiegler shared-state rights amplification pattern to
+-   * reveal the associated value only to the WeakMap in which this key
+-   * is associated with that value. Since only the key retains the
+-   * function, the function can also remember the key without causing
+-   * leakage of the key, so this doesn't violate our general gc
+-   * goals. In addition, because the name need not be a guarded
+-   * secret, we could efficiently handle cross-frame frozen keys.
+-   */
+-  var HIDDEN_NAME_PREFIX = 'weakmap:';
+-  var HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'ident:' + Math.random() + '___';
++/**
++ * Rotates a matrix by the given angle around the X axis
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++function rotateX(out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
+ 
+-  if (typeof crypto !== 'undefined' &&
+-      typeof crypto.getRandomValues === 'function' &&
+-      typeof ArrayBuffer === 'function' &&
+-      typeof Uint8Array === 'function') {
+-    var ab = new ArrayBuffer(25);
+-    var u8s = new Uint8Array(ab);
+-    crypto.getRandomValues(u8s);
+-    HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'rand:' +
+-      Array.prototype.map.call(u8s, function(u8) {
+-        return (u8 % 36).toString(36);
+-      }).join('') + '___';
+-  }
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[0]  = a[0];
++        out[1]  = a[1];
++        out[2]  = a[2];
++        out[3]  = a[3];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
+ 
+-  function isNotHiddenName(name) {
+-    return !(
+-        name.substr(0, HIDDEN_NAME_PREFIX.length) == HIDDEN_NAME_PREFIX &&
+-        name.substr(name.length - 3) === '___');
+-  }
++    // Perform axis-specific matrix multiplication
++    out[4] = a10 * c + a20 * s;
++    out[5] = a11 * c + a21 * s;
++    out[6] = a12 * c + a22 * s;
++    out[7] = a13 * c + a23 * s;
++    out[8] = a20 * c - a10 * s;
++    out[9] = a21 * c - a11 * s;
++    out[10] = a22 * c - a12 * s;
++    out[11] = a23 * c - a13 * s;
++    return out;
++};
++},{}],148:[function(require,module,exports){
++module.exports = rotateY;
+ 
+-  /**
+-   * Monkey patch getOwnPropertyNames to avoid revealing the
+-   * HIDDEN_NAME.
+-   *
+-   * <p>The ES5.1 spec requires each name to appear only once, but as
+-   * of this writing, this requirement is controversial for ES6, so we
+-   * made this code robust against this case. If the resulting extra
+-   * search turns out to be expensive, we can probably relax this once
+-   * ES6 is adequately supported on all major browsers, iff no browser
+-   * versions we support at that time have relaxed this constraint
+-   * without providing built-in ES6 WeakMaps.
+-   */
+-  defProp(Object, 'getOwnPropertyNames', {
+-    value: function fakeGetOwnPropertyNames(obj) {
+-      return gopn(obj).filter(isNotHiddenName);
++/**
++ * Rotates a matrix by the given angle around the Y axis
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++function rotateY(out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
++
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[4]  = a[4];
++        out[5]  = a[5];
++        out[6]  = a[6];
++        out[7]  = a[7];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+-  });
+ 
+-  /**
+-   * getPropertyNames is not in ES5 but it is proposed for ES6 and
+-   * does appear in our whitelist, so we need to clean it too.
+-   */
+-  if ('getPropertyNames' in Object) {
+-    var originalGetPropertyNames = Object.getPropertyNames;
+-    defProp(Object, 'getPropertyNames', {
+-      value: function fakeGetPropertyNames(obj) {
+-        return originalGetPropertyNames(obj).filter(isNotHiddenName);
+-      }
+-    });
+-  }
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c - a20 * s;
++    out[1] = a01 * c - a21 * s;
++    out[2] = a02 * c - a22 * s;
++    out[3] = a03 * c - a23 * s;
++    out[8] = a00 * s + a20 * c;
++    out[9] = a01 * s + a21 * c;
++    out[10] = a02 * s + a22 * c;
++    out[11] = a03 * s + a23 * c;
++    return out;
++};
++},{}],149:[function(require,module,exports){
++module.exports = rotateZ;
+ 
+-  /**
+-   * <p>To treat objects as identity-keys with reasonable efficiency
+-   * on ES5 by itself (i.e., without any object-keyed collections), we
+-   * need to add a hidden property to such key objects when we
+-   * can. This raises several issues:
+-   * <ul>
+-   * <li>Arranging to add this property to objects before we lose the
+-   *     chance, and
+-   * <li>Hiding the existence of this new property from most
+-   *     JavaScript code.
+-   * <li>Preventing <i>certification theft</i>, where one object is
+-   *     created falsely claiming to be the key of an association
+-   *     actually keyed by another object.
+-   * <li>Preventing <i>value theft</i>, where untrusted code with
+-   *     access to a key object but not a weak map nevertheless
+-   *     obtains access to the value associated with that key in that
+-   *     weak map.
+-   * </ul>
+-   * We do so by
+-   * <ul>
+-   * <li>Making the name of the hidden property unguessable, so "[]"
+-   *     indexing, which we cannot intercept, cannot be used to access
+-   *     a property without knowing the name.
+-   * <li>Making the hidden property non-enumerable, so we need not
+-   *     worry about for-in loops or {@code Object.keys},
+-   * <li>monkey patching those reflective methods that would
+-   *     prevent extensions, to add this hidden property first,
+-   * <li>monkey patching those methods that would reveal this
+-   *     hidden property.
+-   * </ul>
+-   * Unfortunately, because of same-origin iframes, we cannot reliably
+-   * add this hidden property before an object becomes
+-   * non-extensible. Instead, if we encounter a non-extensible object
+-   * without a hidden record that we can detect (whether or not it has
+-   * a hidden record stored under a name secret to us), then we just
+-   * use the key object itself to represent its identity in a brute
+-   * force leaky map stored in the weak map, losing all the advantages
+-   * of weakness for these.
+-   */
+-  function getHiddenRecord(key) {
+-    if (key !== Object(key)) {
+-      throw new TypeError('Not an object: ' + key);
+-    }
+-    var hiddenRecord = key[HIDDEN_NAME];
+-    if (hiddenRecord && hiddenRecord.key === key) { return hiddenRecord; }
+-    if (!isExtensible(key)) {
+-      // Weak map must brute force, as explained in doc-comment above.
+-      return void 0;
++/**
++ * Rotates a matrix by the given angle around the Z axis
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++function rotateZ(out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7];
++
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[8]  = a[8];
++        out[9]  = a[9];
++        out[10] = a[10];
++        out[11] = a[11];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+ 
+-    // The hiddenRecord and the key point directly at each other, via
+-    // the "key" and HIDDEN_NAME properties respectively. The key
+-    // field is for quickly verifying that this hidden record is an
+-    // own property, not a hidden record from up the prototype chain.
+-    //
+-    // NOTE: Because this WeakMap emulation is meant only for systems like
+-    // SES where Object.prototype is frozen without any numeric
+-    // properties, it is ok to use an object literal for the hiddenRecord.
+-    // This has two advantages:
+-    // * It is much faster in a performance critical place
+-    // * It avoids relying on Object.create(null), which had been
+-    //   problematic on Chrome 28.0.1480.0. See
+-    //   https://code.google.com/p/google-caja/issues/detail?id=1687
+-    hiddenRecord = { key: key };
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c + a10 * s;
++    out[1] = a01 * c + a11 * s;
++    out[2] = a02 * c + a12 * s;
++    out[3] = a03 * c + a13 * s;
++    out[4] = a10 * c - a00 * s;
++    out[5] = a11 * c - a01 * s;
++    out[6] = a12 * c - a02 * s;
++    out[7] = a13 * c - a03 * s;
++    return out;
++};
++},{}],150:[function(require,module,exports){
++module.exports = scale;
+ 
+-    // When using this WeakMap emulation on platforms where
+-    // Object.prototype might not be frozen and Object.create(null) is
+-    // reliable, use the following two commented out lines instead.
+-    // hiddenRecord = Object.create(null);
+-    // hiddenRecord.key = key;
++/**
++ * Scales the mat4 by the dimensions in the given vec3
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ **/
++function scale(out, a, v) {
++    var x = v[0], y = v[1], z = v[2];
+ 
+-    // Please contact us if you need this to work on platforms where
+-    // Object.prototype might not be frozen and
+-    // Object.create(null) might not be reliable.
++    out[0] = a[0] * x;
++    out[1] = a[1] * x;
++    out[2] = a[2] * x;
++    out[3] = a[3] * x;
++    out[4] = a[4] * y;
++    out[5] = a[5] * y;
++    out[6] = a[6] * y;
++    out[7] = a[7] * y;
++    out[8] = a[8] * z;
++    out[9] = a[9] * z;
++    out[10] = a[10] * z;
++    out[11] = a[11] * z;
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
++},{}],151:[function(require,module,exports){
++module.exports = translate;
+ 
+-    try {
+-      defProp(key, HIDDEN_NAME, {
+-        value: hiddenRecord,
+-        writable: false,
+-        enumerable: false,
+-        configurable: false
+-      });
+-      return hiddenRecord;
+-    } catch (error) {
+-      // Under some circumstances, isExtensible seems to misreport whether
+-      // the HIDDEN_NAME can be defined.
+-      // The circumstances have not been isolated, but at least affect
+-      // Node.js v0.10.26 on TravisCI / Linux, but not the same version of
+-      // Node.js on OS X.
+-      return void 0;
+-    }
+-  }
++/**
++ * Translate a mat4 by the given vector
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
++ */
++function translate(out, a, v) {
++    var x = v[0], y = v[1], z = v[2],
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23;
+ 
+-  /**
+-   * Monkey patch operations that would make their argument
+-   * non-extensible.
+-   *
+-   * <p>The monkey patched versions throw a TypeError if their
+-   * argument is not an object, so it should only be done to functions
+-   * that should throw a TypeError anyway if their argument is not an
+-   * object.
+-   */
+-  (function(){
+-    var oldFreeze = Object.freeze;
+-    defProp(Object, 'freeze', {
+-      value: function identifyingFreeze(obj) {
+-        getHiddenRecord(obj);
+-        return oldFreeze(obj);
+-      }
+-    });
+-    var oldSeal = Object.seal;
+-    defProp(Object, 'seal', {
+-      value: function identifyingSeal(obj) {
+-        getHiddenRecord(obj);
+-        return oldSeal(obj);
+-      }
+-    });
+-    var oldPreventExtensions = Object.preventExtensions;
+-    defProp(Object, 'preventExtensions', {
+-      value: function identifyingPreventExtensions(obj) {
+-        getHiddenRecord(obj);
+-        return oldPreventExtensions(obj);
+-      }
+-    });
+-  })();
++    if (a === out) {
++        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
++        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
++        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
++        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
++    } else {
++        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-  function constFunc(func) {
+-    func.prototype = null;
+-    return Object.freeze(func);
+-  }
++        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
++        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
++        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
+ 
+-  var calledAsFunctionWarningDone = false;
+-  function calledAsFunctionWarning() {
+-    // Future ES6 WeakMap is currently (2013-09-10) expected to reject WeakMap()
+-    // but we used to permit it and do it ourselves, so warn only.
+-    if (!calledAsFunctionWarningDone && typeof console !== 'undefined') {
+-      calledAsFunctionWarningDone = true;
+-      console.warn('WeakMap should be invoked as new WeakMap(), not ' +
+-          'WeakMap(). This will be an error in the future.');
++        out[12] = a00 * x + a10 * y + a20 * z + a[12];
++        out[13] = a01 * x + a11 * y + a21 * z + a[13];
++        out[14] = a02 * x + a12 * y + a22 * z + a[14];
++        out[15] = a03 * x + a13 * y + a23 * z + a[15];
+     }
+-  }
+-
+-  var nextId = 0;
+ 
+-  var OurWeakMap = function() {
+-    if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
+-      calledAsFunctionWarning();
+-    }
++    return out;
++};
++},{}],152:[function(require,module,exports){
++module.exports = transpose;
+ 
+-    // We are currently (12/25/2012) never encountering any prematurely
+-    // non-extensible keys.
+-    var keys = []; // brute force for prematurely non-extensible keys.
+-    var values = []; // brute force for corresponding values.
+-    var id = nextId++;
++/**
++ * Transpose the values of a mat4
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++function transpose(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a01 = a[1], a02 = a[2], a03 = a[3],
++            a12 = a[6], a13 = a[7],
++            a23 = a[11];
+ 
+-    function get___(key, opt_default) {
+-      var index;
+-      var hiddenRecord = getHiddenRecord(key);
+-      if (hiddenRecord) {
+-        return id in hiddenRecord ? hiddenRecord[id] : opt_default;
+-      } else {
+-        index = keys.indexOf(key);
+-        return index >= 0 ? values[index] : opt_default;
+-      }
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a01;
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a02;
++        out[9] = a12;
++        out[11] = a[14];
++        out[12] = a03;
++        out[13] = a13;
++        out[14] = a23;
++    } else {
++        out[0] = a[0];
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a[1];
++        out[5] = a[5];
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a[2];
++        out[9] = a[6];
++        out[10] = a[10];
++        out[11] = a[14];
++        out[12] = a[3];
++        out[13] = a[7];
++        out[14] = a[11];
++        out[15] = a[15];
+     }
++    
++    return out;
++};
++},{}],153:[function(require,module,exports){
++'use strict'
+ 
+-    function has___(key) {
+-      var hiddenRecord = getHiddenRecord(key);
+-      if (hiddenRecord) {
+-        return id in hiddenRecord;
+-      } else {
+-        return keys.indexOf(key) >= 0;
+-      }
+-    }
++module.exports = invert
+ 
+-    function set___(key, value) {
+-      var index;
+-      var hiddenRecord = getHiddenRecord(key);
+-      if (hiddenRecord) {
+-        hiddenRecord[id] = value;
+-      } else {
+-        index = keys.indexOf(key);
+-        if (index >= 0) {
+-          values[index] = value;
+-        } else {
+-          // Since some browsers preemptively terminate slow turns but
+-          // then continue computing with presumably corrupted heap
+-          // state, we here defensively get keys.length first and then
+-          // use it to update both the values and keys arrays, keeping
+-          // them in sync.
+-          index = keys.length;
+-          values[index] = value;
+-          // If we crash here, values will be one longer than keys.
+-          keys[index] = key;
+-        }
+-      }
+-      return this;
+-    }
++var invert2 = require('gl-mat2/invert')
++var invert3 = require('gl-mat3/invert')
++var invert4 = require('gl-mat4/invert')
+ 
+-    function delete___(key) {
+-      var hiddenRecord = getHiddenRecord(key);
+-      var index, lastIndex;
+-      if (hiddenRecord) {
+-        return id in hiddenRecord && delete hiddenRecord[id];
+-      } else {
+-        index = keys.indexOf(key);
+-        if (index < 0) {
+-          return false;
+-        }
+-        // Since some browsers preemptively terminate slow turns but
+-        // then continue computing with potentially corrupted heap
+-        // state, we here defensively get keys.length first and then use
+-        // it to update both the keys and the values array, keeping
+-        // them in sync. We update the two with an order of assignments,
+-        // such that any prefix of these assignments will preserve the
+-        // key/value correspondence, either before or after the delete.
+-        // Note that this needs to work correctly when index === lastIndex.
+-        lastIndex = keys.length - 1;
+-        keys[index] = void 0;
+-        // If we crash here, there's a void 0 in the keys array, but
+-        // no operation will cause a "keys.indexOf(void 0)", since
+-        // getHiddenRecord(void 0) will always throw an error first.
+-        values[index] = values[lastIndex];
+-        // If we crash here, values[index] cannot be found here,
+-        // because keys[index] is void 0.
+-        keys[index] = keys[lastIndex];
+-        // If index === lastIndex and we crash here, then keys[index]
+-        // is still void 0, since the aliasing killed the previous key.
+-        keys.length = lastIndex;
+-        // If we crash here, keys will be one shorter than values.
+-        values.length = lastIndex;
+-        return true;
+-      }
+-    }
++function invert(out, M) {
++  switch(M.length) {
++    case 0:
++    break
++    case 1:
++      out[0] = 1.0 / M[0]
++    break
++    case 4:
++      invert2(out, M)
++    break
++    case 9:
++      invert3(out, M)
++    break
++    case 16:
++      invert4(out, M)
++    break
++    default:
++      throw new Error('currently supports matrices up to 4x4')
++    break
++  }
++  return out
++}
++},{"gl-mat2/invert":134,"gl-mat3/invert":135,"gl-mat4/invert":142}],154:[function(require,module,exports){
++/**
++ * @fileoverview gl-matrix - High performance matrix and vector operations
++ * @author Brandon Jones
++ * @author Colin MacKenzie IV
++ * @version 2.3.2
++ */
+ 
+-    return Object.create(OurWeakMap.prototype, {
+-      get___:    { value: constFunc(get___) },
+-      has___:    { value: constFunc(has___) },
+-      set___:    { value: constFunc(set___) },
+-      delete___: { value: constFunc(delete___) }
+-    });
+-  };
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-  OurWeakMap.prototype = Object.create(Object.prototype, {
+-    get: {
+-      /**
+-       * Return the value most recently associated with key, or
+-       * opt_default if none.
+-       */
+-      value: function get(key, opt_default) {
+-        return this.get___(key, opt_default);
+-      },
+-      writable: true,
+-      configurable: true
+-    },
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-    has: {
+-      /**
+-       * Is there a value associated with key in this WeakMap?
+-       */
+-      value: function has(key) {
+-        return this.has___(key);
+-      },
+-      writable: true,
+-      configurable: true
+-    },
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-    set: {
+-      /**
+-       * Associate value with key in this WeakMap, overwriting any
+-       * previous association if present.
+-       */
+-      value: function set(key, value) {
+-        return this.set___(key, value);
+-      },
+-      writable: true,
+-      configurable: true
+-    },
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
++// END HEADER
+ 
+-    'delete': {
+-      /**
+-       * Remove any association for key in this WeakMap, returning
+-       * whether there was one.
+-       *
+-       * <p>Note that the boolean return here does not work like the
+-       * {@code delete} operator. The {@code delete} operator returns
+-       * whether the deletion succeeds at bringing about a state in
+-       * which the deleted property is absent. The {@code delete}
+-       * operator therefore returns true if the property was already
+-       * absent, whereas this {@code delete} method returns false if
+-       * the association was already absent.
+-       */
+-      value: function remove(key) {
+-        return this.delete___(key);
+-      },
+-      writable: true,
+-      configurable: true
+-    }
+-  });
++exports.glMatrix = require("./gl-matrix/common.js");
++exports.mat2 = require("./gl-matrix/mat2.js");
++exports.mat2d = require("./gl-matrix/mat2d.js");
++exports.mat3 = require("./gl-matrix/mat3.js");
++exports.mat4 = require("./gl-matrix/mat4.js");
++exports.quat = require("./gl-matrix/quat.js");
++exports.vec2 = require("./gl-matrix/vec2.js");
++exports.vec3 = require("./gl-matrix/vec3.js");
++exports.vec4 = require("./gl-matrix/vec4.js");
++},{"./gl-matrix/common.js":155,"./gl-matrix/mat2.js":156,"./gl-matrix/mat2d.js":157,"./gl-matrix/mat3.js":158,"./gl-matrix/mat4.js":159,"./gl-matrix/quat.js":160,"./gl-matrix/vec2.js":161,"./gl-matrix/vec3.js":162,"./gl-matrix/vec4.js":163}],155:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-  if (typeof HostWeakMap === 'function') {
+-    (function() {
+-      // If we got here, then the platform has a WeakMap but we are concerned
+-      // that it may refuse to store some key types. Therefore, make a map
+-      // implementation which makes use of both as possible.
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-      // In this mode we are always using double maps, so we are not proxy-safe.
+-      // This combination does not occur in any known browser, but we had best
+-      // be safe.
+-      if (doubleWeakMapCheckSilentFailure && typeof Proxy !== 'undefined') {
+-        Proxy = undefined;
+-      }
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-      function DoubleWeakMap() {
+-        if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
+-          calledAsFunctionWarning();
+-        }
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-        // Preferable, truly weak map.
+-        var hmap = new HostWeakMap();
++/**
++ * @class Common utilities
++ * @name glMatrix
++ */
++var glMatrix = {};
+ 
+-        // Our hidden-property-based pseudo-weak-map. Lazily initialized in the
+-        // 'set' implementation; thus we can avoid performing extra lookups if
+-        // we know all entries actually stored are entered in 'hmap'.
+-        var omap = undefined;
++// Configuration Constants
++glMatrix.EPSILON = 0.000001;
++glMatrix.ARRAY_TYPE = (typeof Float32Array !== 'undefined') ? Float32Array : Array;
++glMatrix.RANDOM = Math.random;
++glMatrix.ENABLE_SIMD = false;
+ 
+-        // Hidden-property maps are not compatible with proxies because proxies
+-        // can observe the hidden name and either accidentally expose it or fail
+-        // to allow the hidden property to be set. Therefore, we do not allow
+-        // arbitrary WeakMaps to switch to using hidden properties, but only
+-        // those which need the ability, and unprivileged code is not allowed
+-        // to set the flag.
+-        //
+-        // (Except in doubleWeakMapCheckSilentFailure mode in which case we
+-        // disable proxies.)
+-        var enableSwitching = false;
++// Capability detection
++glMatrix.SIMD_AVAILABLE = (glMatrix.ARRAY_TYPE === Float32Array) && ('SIMD' in this);
++glMatrix.USE_SIMD = glMatrix.ENABLE_SIMD && glMatrix.SIMD_AVAILABLE;
+ 
+-        function dget(key, opt_default) {
+-          if (omap) {
+-            return hmap.has(key) ? hmap.get(key)
+-                : omap.get___(key, opt_default);
+-          } else {
+-            return hmap.get(key, opt_default);
+-          }
+-        }
++/**
++ * Sets the type of array used when creating new vectors and matrices
++ *
++ * @param {Type} type Array type, such as Float32Array or Array
++ */
++glMatrix.setMatrixArrayType = function(type) {
++    glMatrix.ARRAY_TYPE = type;
++}
+ 
+-        function dhas(key) {
+-          return hmap.has(key) || (omap ? omap.has___(key) : false);
+-        }
++var degree = Math.PI / 180;
+ 
+-        var dset;
+-        if (doubleWeakMapCheckSilentFailure) {
+-          dset = function(key, value) {
+-            hmap.set(key, value);
+-            if (!hmap.has(key)) {
+-              if (!omap) { omap = new OurWeakMap(); }
+-              omap.set(key, value);
+-            }
+-            return this;
+-          };
+-        } else {
+-          dset = function(key, value) {
+-            if (enableSwitching) {
+-              try {
+-                hmap.set(key, value);
+-              } catch (e) {
+-                if (!omap) { omap = new OurWeakMap(); }
+-                omap.set___(key, value);
+-              }
+-            } else {
+-              hmap.set(key, value);
+-            }
+-            return this;
+-          };
+-        }
++/**
++* Convert Degree To Radian
++*
++* @param {Number} Angle in Degrees
++*/
++glMatrix.toRadian = function(a){
++     return a * degree;
++}
+ 
+-        function ddelete(key) {
+-          var result = !!hmap['delete'](key);
+-          if (omap) { return omap.delete___(key) || result; }
+-          return result;
+-        }
++/**
++ * Tests whether or not the arguments have approximately the same value, within an absolute
++ * or relative tolerance of glMatrix.EPSILON (an absolute tolerance is used for values less 
++ * than or equal to 1.0, and a relative tolerance is used for larger values)
++ * 
++ * @param {Number} a The first number to test.
++ * @param {Number} b The second number to test.
++ * @returns {Boolean} True if the numbers are approximately equal, false otherwise.
++ */
++glMatrix.equals = function(a, b) {
++	return Math.abs(a - b) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a), Math.abs(b));
++}
+ 
+-        return Object.create(OurWeakMap.prototype, {
+-          get___:    { value: constFunc(dget) },
+-          has___:    { value: constFunc(dhas) },
+-          set___:    { value: constFunc(dset) },
+-          delete___: { value: constFunc(ddelete) },
+-          permitHostObjects___: { value: constFunc(function(token) {
+-            if (token === weakMapPermitHostObjects) {
+-              enableSwitching = true;
+-            } else {
+-              throw new Error('bogus call to permitHostObjects___');
+-            }
+-          })}
+-        });
+-      }
+-      DoubleWeakMap.prototype = OurWeakMap.prototype;
+-      module.exports = DoubleWeakMap;
++module.exports = glMatrix;
+ 
+-      // define .constructor to hide OurWeakMap ctor
+-      Object.defineProperty(WeakMap.prototype, 'constructor', {
+-        value: WeakMap,
+-        enumerable: false,  // as default .constructor is
+-        configurable: true,
+-        writable: true
+-      });
+-    })();
+-  } else {
+-    // There is no host WeakMap, so we must use the emulation.
++},{}],156:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-    // Emulated WeakMaps are incompatible with native proxies (because proxies
+-    // can observe the hidden name), so we must disable Proxy usage (in
+-    // ArrayLike and Domado, currently).
+-    if (typeof Proxy !== 'undefined') {
+-      Proxy = undefined;
+-    }
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-    module.exports = OurWeakMap;
+-  }
+-})();
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-},{}],175:[function(require,module,exports){
+-'use strict'
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-var weakMap      = typeof WeakMap === 'undefined' ? require('weak-map') : WeakMap
+-var createBuffer = require('gl-buffer')
+-var createVAO    = require('gl-vao')
++var glMatrix = require("./common.js");
+ 
+-var TriangleCache = new weakMap()
++/**
++ * @class 2x2 Matrix
++ * @name mat2
++ */
++var mat2 = {};
+ 
+-function createABigTriangle(gl) {
++/**
++ * Creates a new identity mat2
++ *
++ * @returns {mat2} a new 2x2 matrix
++ */
++mat2.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
++};
+ 
+-  var triangleVAO = TriangleCache.get(gl)
+-  if(!triangleVAO || !gl.isBuffer(triangleVAO._triangleBuffer.buffer)) {
+-    var buf = createBuffer(gl, new Float32Array([-1, -1, -1, 4, 4, -1]))
+-    triangleVAO = createVAO(gl, [
+-      { buffer: buf,
+-        type: gl.FLOAT,
+-        size: 2
+-      }
+-    ])
+-    triangleVAO._triangleBuffer = buf
+-    TriangleCache.set(gl, triangleVAO)
+-  }
+-  triangleVAO.bind()
+-  gl.drawArrays(gl.TRIANGLES, 0, 3)
+-  triangleVAO.unbind()
+-}
++/**
++ * Creates a new mat2 initialized with values from an existing matrix
++ *
++ * @param {mat2} a matrix to clone
++ * @returns {mat2} a new 2x2 matrix
++ */
++mat2.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-module.exports = createABigTriangle
++/**
++ * Copy the values from one mat2 to another
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++mat2.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-},{"gl-buffer":124,"gl-vao":232,"weak-map":174}],176:[function(require,module,exports){
+-'use strict'
++/**
++ * Set a mat2 to the identity matrix
++ *
++ * @param {mat2} out the receiving matrix
++ * @returns {mat2} out
++ */
++mat2.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
++};
+ 
+-module.exports = createAxes
++/**
++ * Create a new mat2 with the given values
++ *
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m10 Component in column 1, row 0 position (index 2)
++ * @param {Number} m11 Component in column 1, row 1 position (index 3)
++ * @returns {mat2} out A new 2x2 matrix
++ */
++mat2.fromValues = function(m00, m01, m10, m11) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m10;
++    out[3] = m11;
++    return out;
++};
+ 
+-var createText        = require('./lib/text.js')
+-var createLines       = require('./lib/lines.js')
+-var createBackground  = require('./lib/background.js')
+-var getCubeProperties = require('./lib/cube.js')
+-var Ticks             = require('./lib/ticks.js')
++/**
++ * Set the components of a mat2 to the given values
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m10 Component in column 1, row 0 position (index 2)
++ * @param {Number} m11 Component in column 1, row 1 position (index 3)
++ * @returns {mat2} out
++ */
++mat2.set = function(out, m00, m01, m10, m11) {
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m10;
++    out[3] = m11;
++    return out;
++};
+ 
+-var identity = new Float32Array([
+-  1, 0, 0, 0,
+-  0, 1, 0, 0,
+-  0, 0, 1, 0,
+-  0, 0, 0, 1])
+ 
+-function copyVec3(a, b) {
+-  a[0] = b[0]
+-  a[1] = b[1]
+-  a[2] = b[2]
+-  return a
+-}
++/**
++ * Transpose the values of a mat2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++mat2.transpose = function(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a1 = a[1];
++        out[1] = a[2];
++        out[2] = a1;
++    } else {
++        out[0] = a[0];
++        out[1] = a[2];
++        out[2] = a[1];
++        out[3] = a[3];
++    }
++    
++    return out;
++};
+ 
+-function Axes(gl) {
+-  this.gl             = gl
++/**
++ * Inverts a mat2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++mat2.invert = function(out, a) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+ 
+-  this.pixelRatio     = 1
++        // Calculate the determinant
++        det = a0 * a3 - a2 * a1;
+ 
+-  this.bounds         = [ [-10, -10, -10],
+-                          [ 10,  10,  10] ]
+-  this.ticks          = [ [], [], [] ]
+-  this.autoTicks      = true
+-  this.tickSpacing    = [ 1, 1, 1 ]
++    if (!det) {
++        return null;
++    }
++    det = 1.0 / det;
++    
++    out[0] =  a3 * det;
++    out[1] = -a1 * det;
++    out[2] = -a2 * det;
++    out[3] =  a0 * det;
+ 
+-  this.tickEnable     = [ true, true, true ]
+-  this.tickFont       = [ 'sans-serif', 'sans-serif', 'sans-serif' ]
+-  this.tickSize       = [ 12, 12, 12 ]
+-  this.tickAngle      = [ 0, 0, 0 ]
+-  this.tickColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+-  this.tickPad        = [ 10, 10, 10 ]
++    return out;
++};
+ 
+-  this.lastCubeProps  = {
+-    cubeEdges: [0,0,0],
+-    axis:      [0,0,0]
+-  }
++/**
++ * Calculates the adjugate of a mat2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++mat2.adjoint = function(out, a) {
++    // Caching this value is nessecary if out == a
++    var a0 = a[0];
++    out[0] =  a[3];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    out[3] =  a0;
+ 
+-  this.labels         = [ 'x', 'y', 'z' ]
+-  this.labelEnable    = [ true, true, true ]
+-  this.labelFont      = 'sans-serif'
+-  this.labelSize      = [ 20, 20, 20 ]
+-  this.labelAngle     = [ 0, 0, 0 ]
+-  this.labelColor     = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+-  this.labelPad       = [ 10, 10, 10 ]
++    return out;
++};
+ 
+-  this.lineEnable     = [ true, true, true ]
+-  this.lineMirror     = [ false, false, false ]
+-  this.lineWidth      = [ 1, 1, 1 ]
+-  this.lineColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++/**
++ * Calculates the determinant of a mat2
++ *
++ * @param {mat2} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat2.determinant = function (a) {
++    return a[0] * a[3] - a[2] * a[1];
++};
+ 
+-  this.lineTickEnable = [ true, true, true ]
+-  this.lineTickMirror = [ false, false, false ]
+-  this.lineTickLength = [ 0, 0, 0 ]
+-  this.lineTickWidth  = [ 1, 1, 1 ]
+-  this.lineTickColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++/**
++ * Multiplies two mat2's
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @returns {mat2} out
++ */
++mat2.multiply = function (out, a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    out[0] = a0 * b0 + a2 * b1;
++    out[1] = a1 * b0 + a3 * b1;
++    out[2] = a0 * b2 + a2 * b3;
++    out[3] = a1 * b2 + a3 * b3;
++    return out;
++};
+ 
+-  this.gridEnable     = [ true, true, true ]
+-  this.gridWidth      = [ 1, 1, 1 ]
+-  this.gridColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++/**
++ * Alias for {@link mat2.multiply}
++ * @function
++ */
++mat2.mul = mat2.multiply;
+ 
+-  this.zeroEnable     = [ true, true, true ]
+-  this.zeroLineColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+-  this.zeroLineWidth  = [ 2, 2, 2 ]
++/**
++ * Rotates a mat2 by the given angle
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2} out
++ */
++mat2.rotate = function (out, a, rad) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++        s = Math.sin(rad),
++        c = Math.cos(rad);
++    out[0] = a0 *  c + a2 * s;
++    out[1] = a1 *  c + a3 * s;
++    out[2] = a0 * -s + a2 * c;
++    out[3] = a1 * -s + a3 * c;
++    return out;
++};
+ 
+-  this.backgroundEnable = [ false, false, false ]
+-  this.backgroundColor  = [ [0.8, 0.8, 0.8, 0.5],
+-                            [0.8, 0.8, 0.8, 0.5],
+-                            [0.8, 0.8, 0.8, 0.5] ]
++/**
++ * Scales the mat2 by the dimensions in the given vec2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the matrix to rotate
++ * @param {vec2} v the vec2 to scale the matrix by
++ * @returns {mat2} out
++ **/
++mat2.scale = function(out, a, v) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++        v0 = v[0], v1 = v[1];
++    out[0] = a0 * v0;
++    out[1] = a1 * v0;
++    out[2] = a2 * v1;
++    out[3] = a3 * v1;
++    return out;
++};
+ 
+-  this._firstInit = true
+-  this._text  = null
+-  this._lines = null
+-  this._background = createBackground(gl)
++/**
++ * Creates a matrix from a given angle
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2.identity(dest);
++ *     mat2.rotate(dest, dest, rad);
++ *
++ * @param {mat2} out mat2 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2} out
++ */
++mat2.fromRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
++    out[0] = c;
++    out[1] = s;
++    out[2] = -s;
++    out[3] = c;
++    return out;
+ }
+ 
+-var proto = Axes.prototype
+-
+-proto.update = function(options) {
+-  options = options || {}
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2.identity(dest);
++ *     mat2.scale(dest, dest, vec);
++ *
++ * @param {mat2} out mat2 receiving operation result
++ * @param {vec2} v Scaling vector
++ * @returns {mat2} out
++ */
++mat2.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = v[1];
++    return out;
++}
+ 
+-  //Option parsing helper functions
+-  function parseOption(nest, cons, name) {
+-    if(name in options) {
+-      var opt = options[name]
+-      var prev = this[name]
+-      var next
+-      if(nest ? (Array.isArray(opt) && Array.isArray(opt[0])) :
+-                 Array.isArray(opt) ) {
+-        this[name] = next = [ cons(opt[0]), cons(opt[1]), cons(opt[2]) ]
+-      } else {
+-        this[name] = next = [ cons(opt), cons(opt), cons(opt) ]
+-      }
+-      for(var i=0; i<3; ++i) {
+-        if(next[i] !== prev[i]) {
+-          return true
+-        }
+-      }
+-    }
+-    return false
+-  }
++/**
++ * Returns a string representation of a mat2
++ *
++ * @param {mat2} mat matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat2.str = function (a) {
++    return 'mat2(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
++};
+ 
+-  var NUMBER  = parseOption.bind(this, false, Number)
+-  var BOOLEAN = parseOption.bind(this, false, Boolean)
+-  var STRING  = parseOption.bind(this, false, String)
+-  var COLOR   = parseOption.bind(this, true, function(v) {
+-    if(Array.isArray(v)) {
+-      if(v.length === 3) {
+-        return [ +v[0], +v[1], +v[2], 1.0 ]
+-      } else if(v.length === 4) {
+-        return [ +v[0], +v[1], +v[2], +v[3] ]
+-      }
+-    }
+-    return [ 0, 0, 0, 1 ]
+-  })
++/**
++ * Returns Frobenius norm of a mat2
++ *
++ * @param {mat2} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
++ */
++mat2.frob = function (a) {
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2)))
++};
+ 
+-  //Tick marks and bounds
+-  var nextTicks
+-  var ticksUpdate   = false
+-  var boundsChanged = false
+-  if('bounds' in options) {
+-    var bounds = options.bounds
+-i_loop:
+-    for(var i=0; i<2; ++i) {
+-      for(var j=0; j<3; ++j) {
+-        if(bounds[i][j] !== this.bounds[i][j]) {
+-          boundsChanged = true
+-        }
+-        this.bounds[i][j] = bounds[i][j]
+-      }
+-    }
+-  }
+-  if('ticks' in options) {
+-    nextTicks      = options.ticks
+-    ticksUpdate    = true
+-    this.autoTicks = false
+-    for(var i=0; i<3; ++i) {
+-      this.tickSpacing[i] = 0.0
+-    }
+-  } else if(NUMBER('tickSpacing')) {
+-    this.autoTicks  = true
+-    boundsChanged   = true
+-  }
++/**
++ * Returns L, D and U matrices (Lower triangular, Diagonal and Upper triangular) by factorizing the input matrix
++ * @param {mat2} L the lower triangular matrix 
++ * @param {mat2} D the diagonal matrix 
++ * @param {mat2} U the upper triangular matrix 
++ * @param {mat2} a the input matrix to factorize
++ */
+ 
+-  if(this._firstInit) {
+-    if(!('ticks' in options || 'tickSpacing' in options)) {
+-      this.autoTicks = true
+-    }
++mat2.LDU = function (L, D, U, a) { 
++    L[2] = a[2]/a[0]; 
++    U[0] = a[0]; 
++    U[1] = a[1]; 
++    U[3] = a[3] - L[2] * U[1]; 
++    return [L, D, U];       
++}; 
+ 
+-    //Force tick recomputation on first update
+-    boundsChanged   = true
+-    ticksUpdate     = true
+-    this._firstInit = false
+-  }
++/**
++ * Adds two mat2's
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @returns {mat2} out
++ */
++mat2.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    return out;
++};
+ 
+-  if(boundsChanged && this.autoTicks) {
+-    nextTicks = Ticks.create(this.bounds, this.tickSpacing)
+-    ticksUpdate = true
+-  }
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @returns {mat2} out
++ */
++mat2.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    return out;
++};
+ 
+-  //Compare next ticks to previous ticks, only update if needed
+-  if(ticksUpdate) {
+-    for(var i=0; i<3; ++i) {
+-      nextTicks[i].sort(function(a,b) {
+-        return a.x-b.x
+-      })
+-    }
+-    if(Ticks.equal(nextTicks, this.ticks)) {
+-      ticksUpdate = false
+-    } else {
+-      this.ticks = nextTicks
+-    }
+-  }
++/**
++ * Alias for {@link mat2.subtract}
++ * @function
++ */
++mat2.sub = mat2.subtract;
+ 
+-  //Parse tick properties
+-  BOOLEAN('tickEnable')
+-  if(STRING('tickFont')) {
+-    ticksUpdate = true  //If font changes, must rebuild vbo
+-  }
+-  NUMBER('tickSize')
+-  NUMBER('tickAngle')
+-  NUMBER('tickPad')
+-  COLOR('tickColor')
++/**
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {mat2} a The first matrix.
++ * @param {mat2} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat2.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
++};
+ 
+-  //Axis labels
+-  var labelUpdate = STRING('labels')
+-  if(STRING('labelFont')) {
+-    labelUpdate = true
+-  }
+-  BOOLEAN('labelEnable')
+-  NUMBER('labelSize')
+-  NUMBER('labelPad')
+-  COLOR('labelColor')
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat2} a The first matrix.
++ * @param {mat2} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat2.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
++};
+ 
+-  //Axis lines
+-  BOOLEAN('lineEnable')
+-  BOOLEAN('lineMirror')
+-  NUMBER('lineWidth')
+-  COLOR('lineColor')
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat2} out
++ */
++mat2.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    return out;
++};
+ 
+-  //Axis line ticks
+-  BOOLEAN('lineTickEnable')
+-  BOOLEAN('lineTickMirror')
+-  NUMBER('lineTickLength')
+-  NUMBER('lineTickWidth')
+-  COLOR('lineTickColor')
++/**
++ * Adds two mat2's after multiplying each element of the second operand by a scalar value.
++ *
++ * @param {mat2} out the receiving vector
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat2} out
++ */
++mat2.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    return out;
++};
+ 
+-  //Grid lines
+-  BOOLEAN('gridEnable')
+-  NUMBER('gridWidth')
+-  COLOR('gridColor')
++module.exports = mat2;
+ 
+-  //Zero line
+-  BOOLEAN('zeroEnable')
+-  COLOR('zeroLineColor')
+-  NUMBER('zeroLineWidth')
++},{"./common.js":155}],157:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-  //Background
+-  BOOLEAN('backgroundEnable')
+-  COLOR('backgroundColor')
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-  //Update text if necessary
+-  if(!this._text) {
+-    this._text = createText(
+-      this.gl,
+-      this.bounds,
+-      this.labels,
+-      this.labelFont,
+-      this.ticks,
+-      this.tickFont)
+-  } else if(this._text && (labelUpdate || ticksUpdate)) {
+-    this._text.update(
+-      this.bounds,
+-      this.labels,
+-      this.labelFont,
+-      this.ticks,
+-      this.tickFont)
+-  }
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-  //Update lines if necessary
+-  if(this._lines && ticksUpdate) {
+-    this._lines.dispose()
+-    this._lines = null
+-  }
+-  if(!this._lines) {
+-    this._lines = createLines(this.gl, this.bounds, this.ticks)
+-  }
+-}
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-function OffsetInfo() {
+-  this.primalOffset = [0,0,0]
+-  this.primalMinor  = [0,0,0]
+-  this.mirrorOffset = [0,0,0]
+-  this.mirrorMinor  = [0,0,0]
+-}
++var glMatrix = require("./common.js");
+ 
+-var LINE_OFFSET = [ new OffsetInfo(), new OffsetInfo(), new OffsetInfo() ]
++/**
++ * @class 2x3 Matrix
++ * @name mat2d
++ * 
++ * @description 
++ * A mat2d contains six elements defined as:
++ * <pre>
++ * [a, c, tx,
++ *  b, d, ty]
++ * </pre>
++ * This is a short form for the 3x3 matrix:
++ * <pre>
++ * [a, c, tx,
++ *  b, d, ty,
++ *  0, 0, 1]
++ * </pre>
++ * The last row is ignored so the array is shorter and operations are faster.
++ */
++var mat2d = {};
+ 
+-function computeLineOffset(result, i, bounds, cubeEdges, cubeAxis) {
+-  var primalOffset = result.primalOffset
+-  var primalMinor  = result.primalMinor
+-  var dualOffset   = result.mirrorOffset
+-  var dualMinor    = result.mirrorMinor
+-  var e = cubeEdges[i]
++/**
++ * Creates a new identity mat2d
++ *
++ * @returns {mat2d} a new 2x3 matrix
++ */
++mat2d.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(6);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    out[4] = 0;
++    out[5] = 0;
++    return out;
++};
+ 
+-  //Calculate offsets
+-  for(var j=0; j<3; ++j) {
+-    if(i === j) {
+-      continue
+-    }
+-    var a = primalOffset,
+-        b = dualOffset,
+-        c = primalMinor,
+-        d = dualMinor
+-    if(e & (1<<j)) {
+-      a = dualOffset
+-      b = primalOffset
+-      c = dualMinor
+-      d = primalMinor
+-    }
+-    a[j] = bounds[0][j]
+-    b[j] = bounds[1][j]
+-    if(cubeAxis[j] > 0) {
+-      c[j] = -1
+-      d[j] = 0
+-    } else {
+-      c[j] = 0
+-      d[j] = +1
+-    }
+-  }
+-}
++/**
++ * Creates a new mat2d initialized with values from an existing matrix
++ *
++ * @param {mat2d} a matrix to clone
++ * @returns {mat2d} a new 2x3 matrix
++ */
++mat2d.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(6);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    return out;
++};
+ 
+-var CUBE_ENABLE = [0,0,0]
+-var DEFAULT_PARAMS = {
+-  model:      identity,
+-  view:       identity,
+-  projection: identity
+-}
++/**
++ * Copy the values from one mat2d to another
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the source matrix
++ * @returns {mat2d} out
++ */
++mat2d.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    return out;
++};
+ 
+-proto.isOpaque = function() {
+-  return true
+-}
++/**
++ * Set a mat2d to the identity matrix
++ *
++ * @param {mat2d} out the receiving matrix
++ * @returns {mat2d} out
++ */
++mat2d.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    out[4] = 0;
++    out[5] = 0;
++    return out;
++};
+ 
+-proto.isTransparent = function() {
+-  return false
+-}
++/**
++ * Create a new mat2d with the given values
++ *
++ * @param {Number} a Component A (index 0)
++ * @param {Number} b Component B (index 1)
++ * @param {Number} c Component C (index 2)
++ * @param {Number} d Component D (index 3)
++ * @param {Number} tx Component TX (index 4)
++ * @param {Number} ty Component TY (index 5)
++ * @returns {mat2d} A new mat2d
++ */
++mat2d.fromValues = function(a, b, c, d, tx, ty) {
++    var out = new glMatrix.ARRAY_TYPE(6);
++    out[0] = a;
++    out[1] = b;
++    out[2] = c;
++    out[3] = d;
++    out[4] = tx;
++    out[5] = ty;
++    return out;
++};
+ 
+-proto.drawTransparent = function(params) {}
++/**
++ * Set the components of a mat2d to the given values
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {Number} a Component A (index 0)
++ * @param {Number} b Component B (index 1)
++ * @param {Number} c Component C (index 2)
++ * @param {Number} d Component D (index 3)
++ * @param {Number} tx Component TX (index 4)
++ * @param {Number} ty Component TY (index 5)
++ * @returns {mat2d} out
++ */
++mat2d.set = function(out, a, b, c, d, tx, ty) {
++    out[0] = a;
++    out[1] = b;
++    out[2] = c;
++    out[3] = d;
++    out[4] = tx;
++    out[5] = ty;
++    return out;
++};
+ 
++/**
++ * Inverts a mat2d
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the source matrix
++ * @returns {mat2d} out
++ */
++mat2d.invert = function(out, a) {
++    var aa = a[0], ab = a[1], ac = a[2], ad = a[3],
++        atx = a[4], aty = a[5];
+ 
+-var PRIMAL_MINOR  = [0,0,0]
+-var MIRROR_MINOR  = [0,0,0]
+-var PRIMAL_OFFSET = [0,0,0]
++    var det = aa * ad - ab * ac;
++    if(!det){
++        return null;
++    }
++    det = 1.0 / det;
+ 
+-proto.draw = function(params) {
+-  params = params || DEFAULT_PARAMS
++    out[0] = ad * det;
++    out[1] = -ab * det;
++    out[2] = -ac * det;
++    out[3] = aa * det;
++    out[4] = (ac * aty - ad * atx) * det;
++    out[5] = (ab * atx - aa * aty) * det;
++    return out;
++};
+ 
+-  var gl = this.gl
++/**
++ * Calculates the determinant of a mat2d
++ *
++ * @param {mat2d} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat2d.determinant = function (a) {
++    return a[0] * a[3] - a[1] * a[2];
++};
+ 
+-  //Geometry for camera and axes
+-  var model       = params.model || identity
+-  var view        = params.view || identity
+-  var projection  = params.projection || identity
+-  var bounds      = this.bounds
++/**
++ * Multiplies two mat2d's
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @returns {mat2d} out
++ */
++mat2d.multiply = function (out, a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
++    out[0] = a0 * b0 + a2 * b1;
++    out[1] = a1 * b0 + a3 * b1;
++    out[2] = a0 * b2 + a2 * b3;
++    out[3] = a1 * b2 + a3 * b3;
++    out[4] = a0 * b4 + a2 * b5 + a4;
++    out[5] = a1 * b4 + a3 * b5 + a5;
++    return out;
++};
+ 
+-  //Unpack axis info
+-  var cubeParams  = getCubeProperties(model, view, projection, bounds)
+-  var cubeEdges   = cubeParams.cubeEdges
+-  var cubeAxis    = cubeParams.axis
++/**
++ * Alias for {@link mat2d.multiply}
++ * @function
++ */
++mat2d.mul = mat2d.multiply;
+ 
+-  var cx = view[12]
+-  var cy = view[13]
+-  var cz = view[14]
+-  var cw = view[15]
++/**
++ * Rotates a mat2d by the given angle
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2d} out
++ */
++mat2d.rotate = function (out, a, rad) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        s = Math.sin(rad),
++        c = Math.cos(rad);
++    out[0] = a0 *  c + a2 * s;
++    out[1] = a1 *  c + a3 * s;
++    out[2] = a0 * -s + a2 * c;
++    out[3] = a1 * -s + a3 * c;
++    out[4] = a4;
++    out[5] = a5;
++    return out;
++};
+ 
+-  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
++/**
++ * Scales the mat2d by the dimensions in the given vec2
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to translate
++ * @param {vec2} v the vec2 to scale the matrix by
++ * @returns {mat2d} out
++ **/
++mat2d.scale = function(out, a, v) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        v0 = v[0], v1 = v[1];
++    out[0] = a0 * v0;
++    out[1] = a1 * v0;
++    out[2] = a2 * v1;
++    out[3] = a3 * v1;
++    out[4] = a4;
++    out[5] = a5;
++    return out;
++};
+ 
+-  for(var i=0; i<3; ++i) {
+-    this.lastCubeProps.cubeEdges[i] = cubeEdges[i]
+-    this.lastCubeProps.axis[i] = cubeAxis[i]
+-  }
++/**
++ * Translates the mat2d by the dimensions in the given vec2
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to translate
++ * @param {vec2} v the vec2 to translate the matrix by
++ * @returns {mat2d} out
++ **/
++mat2d.translate = function(out, a, v) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        v0 = v[0], v1 = v[1];
++    out[0] = a0;
++    out[1] = a1;
++    out[2] = a2;
++    out[3] = a3;
++    out[4] = a0 * v0 + a2 * v1 + a4;
++    out[5] = a1 * v0 + a3 * v1 + a5;
++    return out;
++};
+ 
+-  //Compute axis info
+-  var lineOffset  = LINE_OFFSET
+-  for(var i=0; i<3; ++i) {
+-    computeLineOffset(
+-      LINE_OFFSET[i],
+-      i,
+-      this.bounds,
+-      cubeEdges,
+-      cubeAxis)
+-  }
++/**
++ * Creates a matrix from a given angle
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2d.identity(dest);
++ *     mat2d.rotate(dest, dest, rad);
++ *
++ * @param {mat2d} out mat2d receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2d} out
++ */
++mat2d.fromRotation = function(out, rad) {
++    var s = Math.sin(rad), c = Math.cos(rad);
++    out[0] = c;
++    out[1] = s;
++    out[2] = -s;
++    out[3] = c;
++    out[4] = 0;
++    out[5] = 0;
++    return out;
++}
+ 
+-  //Set up state parameters
+-  var gl = this.gl
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2d.identity(dest);
++ *     mat2d.scale(dest, dest, vec);
++ *
++ * @param {mat2d} out mat2d receiving operation result
++ * @param {vec2} v Scaling vector
++ * @returns {mat2d} out
++ */
++mat2d.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = v[1];
++    out[4] = 0;
++    out[5] = 0;
++    return out;
++}
+ 
+-  //Draw background first
+-  var cubeEnable = CUBE_ENABLE
+-  for(var i=0; i<3; ++i) {
+-    if(this.backgroundEnable[i]) {
+-      cubeEnable[i] = cubeAxis[i]
+-    } else {
+-      cubeEnable[i] = 0
+-    }
+-  }
++/**
++ * Creates a matrix from a vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2d.identity(dest);
++ *     mat2d.translate(dest, dest, vec);
++ *
++ * @param {mat2d} out mat2d receiving operation result
++ * @param {vec2} v Translation vector
++ * @returns {mat2d} out
++ */
++mat2d.fromTranslation = function(out, v) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    out[4] = v[0];
++    out[5] = v[1];
++    return out;
++}
+ 
+-  this._background.draw(
+-    model,
+-    view,
+-    projection,
+-    bounds,
+-    cubeEnable,
+-    this.backgroundColor)
++/**
++ * Returns a string representation of a mat2d
++ *
++ * @param {mat2d} a matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat2d.str = function (a) {
++    return 'mat2d(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
++                    a[3] + ', ' + a[4] + ', ' + a[5] + ')';
++};
+ 
+-  //Draw lines
+-  this._lines.bind(
+-    model,
+-    view,
+-    projection,
+-    this)
++/**
++ * Returns Frobenius norm of a mat2d
++ *
++ * @param {mat2d} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
++ */
++mat2d.frob = function (a) { 
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + 1))
++}; 
+ 
+-  //First draw grid lines and zero lines
+-  for(var i=0; i<3; ++i) {
+-    var x = [0,0,0]
+-    if(cubeAxis[i] > 0) {
+-      x[i] = bounds[1][i]
+-    } else {
+-      x[i] = bounds[0][i]
+-    }
++/**
++ * Adds two mat2d's
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @returns {mat2d} out
++ */
++mat2d.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    out[4] = a[4] + b[4];
++    out[5] = a[5] + b[5];
++    return out;
++};
+ 
+-    //Draw grid lines
+-    for(var j=0; j<2; ++j) {
+-      var u = (i + 1 + j) % 3
+-      var v = (i + 1 + (j^1)) % 3
+-      if(this.gridEnable[u]) {
+-        this._lines.drawGrid(u, v, this.bounds, x, this.gridColor[u], this.gridWidth[u]*this.pixelRatio)
+-      }
+-    }
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @returns {mat2d} out
++ */
++mat2d.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    out[4] = a[4] - b[4];
++    out[5] = a[5] - b[5];
++    return out;
++};
+ 
+-    //Draw zero lines (need to do this AFTER all grid lines are drawn)
+-    for(var j=0; j<2; ++j) {
+-      var u = (i + 1 + j) % 3
+-      var v = (i + 1 + (j^1)) % 3
+-      if(this.zeroEnable[v]) {
+-        //Check if zero line in bounds
+-        if(bounds[0][v] <= 0 && bounds[1][v] >= 0) {
+-          this._lines.drawZero(u, v, this.bounds, x, this.zeroLineColor[v], this.zeroLineWidth[v]*this.pixelRatio)
+-        }
+-      }
+-    }
+-  }
++/**
++ * Alias for {@link mat2d.subtract}
++ * @function
++ */
++mat2d.sub = mat2d.subtract;
+ 
+-  //Then draw axis lines and tick marks
+-  for(var i=0; i<3; ++i) {
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat2d} out
++ */
++mat2d.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    out[4] = a[4] * b;
++    out[5] = a[5] * b;
++    return out;
++};
+ 
+-    //Draw axis lines
+-    if(this.lineEnable[i]) {
+-      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].primalOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
+-    }
+-    if(this.lineMirror[i]) {
+-      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].mirrorOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
+-    }
++/**
++ * Adds two mat2d's after multiplying each element of the second operand by a scalar value.
++ *
++ * @param {mat2d} out the receiving vector
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat2d} out
++ */
++mat2d.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    out[4] = a[4] + (b[4] * scale);
++    out[5] = a[5] + (b[5] * scale);
++    return out;
++};
+ 
+-    //Compute minor axes
+-    var primalMinor = copyVec3(PRIMAL_MINOR, lineOffset[i].primalMinor)
+-    var mirrorMinor = copyVec3(MIRROR_MINOR, lineOffset[i].mirrorMinor)
+-    var tickLength  = this.lineTickLength
+-    var op = 0
+-    for(var j=0; j<3; ++j) {
+-      var scaleFactor = pixelScaleF / model[5*j]
+-      primalMinor[j] *= tickLength[j] * scaleFactor
+-      mirrorMinor[j] *= tickLength[j] * scaleFactor
+-    }
++/**
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {mat2d} a The first matrix.
++ * @param {mat2d} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat2d.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5];
++};
+ 
+-    //Draw axis line ticks
+-    if(this.lineTickEnable[i]) {
+-      this._lines.drawAxisTicks(i, lineOffset[i].primalOffset, primalMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
+-    }
+-    if(this.lineTickMirror[i]) {
+-      this._lines.drawAxisTicks(i, lineOffset[i].mirrorOffset, mirrorMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
+-    }
+-  }
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat2d} a The first matrix.
++ * @param {mat2d} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat2d.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
++            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
++            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)));
++};
+ 
+-  //Draw text sprites
+-  this._text.bind(
+-    model,
+-    view,
+-    projection,
+-    this.pixelRatio)
++module.exports = mat2d;
+ 
+-  for(var i=0; i<3; ++i) {
++},{"./common.js":155}],158:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-    var minor      = lineOffset[i].primalMinor
+-    var offset     = copyVec3(PRIMAL_OFFSET, lineOffset[i].primalOffset)
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-    for(var j=0; j<3; ++j) {
+-      if(this.lineTickEnable[i]) {
+-        offset[j] += pixelScaleF * minor[j] * Math.max(this.lineTickLength[j], 0)  / model[5*j]
+-      }
+-    }
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-    //Draw tick text
+-    if(this.tickEnable[i]) {
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-      //Add tick padding
+-      for(var j=0; j<3; ++j) {
+-        offset[j] += pixelScaleF * minor[j] * this.tickPad[j] / model[5*j]
+-      }
++var glMatrix = require("./common.js");
++
++/**
++ * @class 3x3 Matrix
++ * @name mat3
++ */
++var mat3 = {};
+ 
+-      //Draw axis
+-      this._text.drawTicks(
+-        i,
+-        this.tickSize[i],
+-        this.tickAngle[i],
+-        offset,
+-        this.tickColor[i])
+-    }
++/**
++ * Creates a new identity mat3
++ *
++ * @returns {mat3} a new 3x3 matrix
++ */
++mat3.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(9);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 1;
++    out[5] = 0;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
++};
+ 
+-    //Draw labels
+-    if(this.labelEnable[i]) {
++/**
++ * Copies the upper-left 3x3 values into the given mat3.
++ *
++ * @param {mat3} out the receiving 3x3 matrix
++ * @param {mat4} a   the source 4x4 matrix
++ * @returns {mat3} out
++ */
++mat3.fromMat4 = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[4];
++    out[4] = a[5];
++    out[5] = a[6];
++    out[6] = a[8];
++    out[7] = a[9];
++    out[8] = a[10];
++    return out;
++};
+ 
+-      //Add label padding
+-      for(var j=0; j<3; ++j) {
+-        offset[j] += pixelScaleF * minor[j] * this.labelPad[j] / model[5*j]
+-      }
+-      offset[i] += 0.5 * (bounds[0][i] + bounds[1][i])
++/**
++ * Creates a new mat3 initialized with values from an existing matrix
++ *
++ * @param {mat3} a matrix to clone
++ * @returns {mat3} a new 3x3 matrix
++ */
++mat3.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(9);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    return out;
++};
+ 
+-      //Draw axis
+-      this._text.drawLabel(
+-        i,
+-        this.labelSize[i],
+-        this.labelAngle[i],
+-        offset,
+-        this.labelColor[i])
+-    }
+-  }
+-}
++/**
++ * Copy the values from one mat3 to another
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    return out;
++};
+ 
+-proto.dispose = function() {
+-  this._text.dispose()
+-  this._lines.dispose()
+-  this._background.dispose()
+-  this._lines = null
+-  this._text = null
+-  this._background = null
+-  this.gl = null
+-}
++/**
++ * Create a new mat3 with the given values
++ *
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m10 Component in column 1, row 0 position (index 3)
++ * @param {Number} m11 Component in column 1, row 1 position (index 4)
++ * @param {Number} m12 Component in column 1, row 2 position (index 5)
++ * @param {Number} m20 Component in column 2, row 0 position (index 6)
++ * @param {Number} m21 Component in column 2, row 1 position (index 7)
++ * @param {Number} m22 Component in column 2, row 2 position (index 8)
++ * @returns {mat3} A new mat3
++ */
++mat3.fromValues = function(m00, m01, m02, m10, m11, m12, m20, m21, m22) {
++    var out = new glMatrix.ARRAY_TYPE(9);
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m10;
++    out[4] = m11;
++    out[5] = m12;
++    out[6] = m20;
++    out[7] = m21;
++    out[8] = m22;
++    return out;
++};
+ 
+-function createAxes(gl, options) {
+-  var axes = new Axes(gl)
+-  axes.update(options)
+-  return axes
+-}
++/**
++ * Set the components of a mat3 to the given values
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m10 Component in column 1, row 0 position (index 3)
++ * @param {Number} m11 Component in column 1, row 1 position (index 4)
++ * @param {Number} m12 Component in column 1, row 2 position (index 5)
++ * @param {Number} m20 Component in column 2, row 0 position (index 6)
++ * @param {Number} m21 Component in column 2, row 1 position (index 7)
++ * @param {Number} m22 Component in column 2, row 2 position (index 8)
++ * @returns {mat3} out
++ */
++mat3.set = function(out, m00, m01, m02, m10, m11, m12, m20, m21, m22) {
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m10;
++    out[4] = m11;
++    out[5] = m12;
++    out[6] = m20;
++    out[7] = m21;
++    out[8] = m22;
++    return out;
++};
+ 
+-},{"./lib/background.js":177,"./lib/cube.js":178,"./lib/lines.js":179,"./lib/text.js":181,"./lib/ticks.js":182}],177:[function(require,module,exports){
+-'use strict'
++/**
++ * Set a mat3 to the identity matrix
++ *
++ * @param {mat3} out the receiving matrix
++ * @returns {mat3} out
++ */
++mat3.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 1;
++    out[5] = 0;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
++};
+ 
+-module.exports = createBackgroundCube
++/**
++ * Transpose the values of a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.transpose = function(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a01 = a[1], a02 = a[2], a12 = a[5];
++        out[1] = a[3];
++        out[2] = a[6];
++        out[3] = a01;
++        out[5] = a[7];
++        out[6] = a02;
++        out[7] = a12;
++    } else {
++        out[0] = a[0];
++        out[1] = a[3];
++        out[2] = a[6];
++        out[3] = a[1];
++        out[4] = a[4];
++        out[5] = a[7];
++        out[6] = a[2];
++        out[7] = a[5];
++        out[8] = a[8];
++    }
++    
++    return out;
++};
+ 
+-var createBuffer = require('gl-buffer')
+-var createVAO    = require('gl-vao')
+-var createShader = require('./shaders').bg
++/**
++ * Inverts a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.invert = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
+ 
+-function BackgroundCube(gl, buffer, vao, shader) {
+-  this.gl = gl
+-  this.buffer = buffer
+-  this.vao = vao
+-  this.shader = shader
+-}
++        b01 = a22 * a11 - a12 * a21,
++        b11 = -a22 * a10 + a12 * a20,
++        b21 = a21 * a10 - a11 * a20,
+ 
+-var proto = BackgroundCube.prototype
++        // Calculate the determinant
++        det = a00 * b01 + a01 * b11 + a02 * b21;
+ 
+-proto.draw = function(model, view, projection, bounds, enable, colors) {
+-  var needsBG = false
+-  for(var i=0; i<3; ++i) {
+-    needsBG = needsBG || enable[i]
+-  }
+-  if(!needsBG) {
+-    return
+-  }
++    if (!det) { 
++        return null; 
++    }
++    det = 1.0 / det;
+ 
+-  var gl = this.gl
++    out[0] = b01 * det;
++    out[1] = (-a22 * a01 + a02 * a21) * det;
++    out[2] = (a12 * a01 - a02 * a11) * det;
++    out[3] = b11 * det;
++    out[4] = (a22 * a00 - a02 * a20) * det;
++    out[5] = (-a12 * a00 + a02 * a10) * det;
++    out[6] = b21 * det;
++    out[7] = (-a21 * a00 + a01 * a20) * det;
++    out[8] = (a11 * a00 - a01 * a10) * det;
++    return out;
++};
+ 
+-  gl.enable(gl.POLYGON_OFFSET_FILL)
+-  gl.polygonOffset(1, 2)
++/**
++ * Calculates the adjugate of a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.adjoint = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8];
+ 
+-  this.shader.bind()
+-  this.shader.uniforms = {
+-    model: model,
+-    view: view,
+-    projection: projection,
+-    bounds: bounds,
+-    enable: enable,
+-    colors: colors
+-  }
+-  this.vao.bind()
+-  this.vao.draw(this.gl.TRIANGLES, 36)
++    out[0] = (a11 * a22 - a12 * a21);
++    out[1] = (a02 * a21 - a01 * a22);
++    out[2] = (a01 * a12 - a02 * a11);
++    out[3] = (a12 * a20 - a10 * a22);
++    out[4] = (a00 * a22 - a02 * a20);
++    out[5] = (a02 * a10 - a00 * a12);
++    out[6] = (a10 * a21 - a11 * a20);
++    out[7] = (a01 * a20 - a00 * a21);
++    out[8] = (a00 * a11 - a01 * a10);
++    return out;
++};
+ 
+-  gl.disable(gl.POLYGON_OFFSET_FILL)
+-}
++/**
++ * Calculates the determinant of a mat3
++ *
++ * @param {mat3} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat3.determinant = function (a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8];
+ 
+-proto.dispose = function() {
+-  this.vao.dispose()
+-  this.buffer.dispose()
+-  this.shader.dispose()
+-}
++    return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);
++};
+ 
+-function createBackgroundCube(gl) {
+-  //Create cube vertices
+-  var vertices = []
+-  var indices  = []
+-  var ptr = 0
+-  for(var d=0; d<3; ++d) {
+-    var u = (d+1) % 3
+-    var v = (d+2) % 3
+-    var x = [0,0,0]
+-    var c = [0,0,0]
+-    for(var s=-1; s<=1; s+=2) {
+-      indices.push(ptr,   ptr+2, ptr+1,
+-                   ptr+1, ptr+2, ptr+3)
+-      x[d] = s
+-      c[d] = s
+-      for(var i=-1; i<=1; i+=2) {
+-        x[u] = i
+-        for(var j=-1; j<=1; j+=2) {
+-          x[v] = j
+-          vertices.push(x[0], x[1], x[2],
+-                        c[0], c[1], c[2])
+-          ptr += 1
+-        }
+-      }
+-      //Swap u and v
+-      var tt = u
+-      u = v
+-      v = tt
+-    }
+-  }
++/**
++ * Multiplies two mat3's
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @returns {mat3} out
++ */
++mat3.multiply = function (out, a, b) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
+ 
+-  //Allocate buffer and vertex array
+-  var buffer = createBuffer(gl, new Float32Array(vertices))
+-  var elements = createBuffer(gl, new Uint16Array(indices), gl.ELEMENT_ARRAY_BUFFER)
+-  var vao = createVAO(gl, [
+-      {
+-        buffer: buffer,
+-        type: gl.FLOAT,
+-        size: 3,
+-        offset: 0,
+-        stride: 24
+-      },
+-      {
+-        buffer: buffer,
+-        type: gl.FLOAT,
+-        size: 3,
+-        offset: 12,
+-        stride: 24
+-      }
+-    ], elements)
++        b00 = b[0], b01 = b[1], b02 = b[2],
++        b10 = b[3], b11 = b[4], b12 = b[5],
++        b20 = b[6], b21 = b[7], b22 = b[8];
+ 
+-  //Create shader object
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.normal.location = 1
++    out[0] = b00 * a00 + b01 * a10 + b02 * a20;
++    out[1] = b00 * a01 + b01 * a11 + b02 * a21;
++    out[2] = b00 * a02 + b01 * a12 + b02 * a22;
+ 
+-  return new BackgroundCube(gl, buffer, vao, shader)
+-}
++    out[3] = b10 * a00 + b11 * a10 + b12 * a20;
++    out[4] = b10 * a01 + b11 * a11 + b12 * a21;
++    out[5] = b10 * a02 + b11 * a12 + b12 * a22;
+ 
+-},{"./shaders":180,"gl-buffer":124,"gl-vao":232}],178:[function(require,module,exports){
+-"use strict"
++    out[6] = b20 * a00 + b21 * a10 + b22 * a20;
++    out[7] = b20 * a01 + b21 * a11 + b22 * a21;
++    out[8] = b20 * a02 + b21 * a12 + b22 * a22;
++    return out;
++};
+ 
+-module.exports = getCubeEdges
++/**
++ * Alias for {@link mat3.multiply}
++ * @function
++ */
++mat3.mul = mat3.multiply;
+ 
+-var bits      = require('bit-twiddle')
+-var multiply  = require('gl-mat4/multiply')
+-var invert    = require('gl-mat4/invert')
+-var splitPoly = require('split-polygon')
+-var orient    = require('robust-orientation')
++/**
++ * Translate a mat3 by the given vector
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to translate
++ * @param {vec2} v vector to translate by
++ * @returns {mat3} out
++ */
++mat3.translate = function(out, a, v) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
++        x = v[0], y = v[1];
+ 
+-var mvp        = new Array(16)
+-var imvp       = new Array(16)
+-var pCubeVerts = new Array(8)
+-var cubeVerts  = new Array(8)
+-var x          = new Array(3)
+-var zero3      = [0,0,0]
++    out[0] = a00;
++    out[1] = a01;
++    out[2] = a02;
+ 
+-;(function() {
+-  for(var i=0; i<8; ++i) {
+-    pCubeVerts[i] =[1,1,1,1]
+-    cubeVerts[i] = [1,1,1]
+-  }
+-})()
++    out[3] = a10;
++    out[4] = a11;
++    out[5] = a12;
+ 
++    out[6] = x * a00 + y * a10 + a20;
++    out[7] = x * a01 + y * a11 + a21;
++    out[8] = x * a02 + y * a12 + a22;
++    return out;
++};
+ 
+-function transformHg(result, x, mat) {
+-  for(var i=0; i<4; ++i) {
+-    result[i] = mat[12+i]
+-    for(var j=0; j<3; ++j) {
+-      result[i] += x[j]*mat[4*j+i]
+-    }
+-  }
+-}
++/**
++ * Rotates a mat3 by the given angle
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat3} out
++ */
++mat3.rotate = function (out, a, rad) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
+ 
+-var FRUSTUM_PLANES = [
+-  [ 0, 0, 1, 0, 0],
+-  [ 0, 0,-1, 1, 0],
+-  [ 0,-1, 0, 1, 0],
+-  [ 0, 1, 0, 1, 0],
+-  [-1, 0, 0, 1, 0],
+-  [ 1, 0, 0, 1, 0]
+-]
++        s = Math.sin(rad),
++        c = Math.cos(rad);
+ 
+-function polygonArea(p) {
+-  for(var i=0; i<FRUSTUM_PLANES.length; ++i) {
+-    p = splitPoly.positive(p, FRUSTUM_PLANES[i])
+-    if(p.length < 3) {
+-      return 0
+-    }
+-  }
++    out[0] = c * a00 + s * a10;
++    out[1] = c * a01 + s * a11;
++    out[2] = c * a02 + s * a12;
+ 
+-  var base = p[0]
+-  var ax = base[0] / base[3]
+-  var ay = base[1] / base[3]
+-  var area = 0.0
+-  for(var i=1; i+1<p.length; ++i) {
+-    var b = p[i]
+-    var c = p[i+1]
++    out[3] = c * a10 - s * a00;
++    out[4] = c * a11 - s * a01;
++    out[5] = c * a12 - s * a02;
+ 
+-    var bx = b[0]/b[3]
+-    var by = b[1]/b[3]
+-    var cx = c[0]/c[3]
+-    var cy = c[1]/c[3]
++    out[6] = a20;
++    out[7] = a21;
++    out[8] = a22;
++    return out;
++};
+ 
+-    var ux = bx - ax
+-    var uy = by - ay
++/**
++ * Scales the mat3 by the dimensions in the given vec2
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to rotate
++ * @param {vec2} v the vec2 to scale the matrix by
++ * @returns {mat3} out
++ **/
++mat3.scale = function(out, a, v) {
++    var x = v[0], y = v[1];
+ 
+-    var vx = cx - ax
+-    var vy = cy - ay
++    out[0] = x * a[0];
++    out[1] = x * a[1];
++    out[2] = x * a[2];
+ 
+-    area += Math.abs(ux * vy - uy * vx)
+-  }
++    out[3] = y * a[3];
++    out[4] = y * a[4];
++    out[5] = y * a[5];
+ 
+-  return area
+-}
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    return out;
++};
+ 
+-var CUBE_EDGES = [1,1,1]
+-var CUBE_AXIS  = [0,0,0]
+-var CUBE_RESULT = {
+-  cubeEdges: CUBE_EDGES,
+-  axis: CUBE_AXIS
++/**
++ * Creates a matrix from a vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat3.identity(dest);
++ *     mat3.translate(dest, dest, vec);
++ *
++ * @param {mat3} out mat3 receiving operation result
++ * @param {vec2} v Translation vector
++ * @returns {mat3} out
++ */
++mat3.fromTranslation = function(out, v) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 1;
++    out[5] = 0;
++    out[6] = v[0];
++    out[7] = v[1];
++    out[8] = 1;
++    return out;
+ }
+ 
+-function getCubeEdges(model, view, projection, bounds) {
++/**
++ * Creates a matrix from a given angle
++ * This is equivalent to (but much faster than):
++ *
++ *     mat3.identity(dest);
++ *     mat3.rotate(dest, dest, rad);
++ *
++ * @param {mat3} out mat3 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat3} out
++ */
++mat3.fromRotation = function(out, rad) {
++    var s = Math.sin(rad), c = Math.cos(rad);
+ 
+-  //Concatenate matrices
+-  multiply(mvp, view, model)
+-  multiply(mvp, projection, mvp)
+-  
+-  //First project cube vertices
+-  var ptr = 0
+-  for(var i=0; i<2; ++i) {
+-    x[2] = bounds[i][2]
+-    for(var j=0; j<2; ++j) {
+-      x[1] = bounds[j][1]
+-      for(var k=0; k<2; ++k) {
+-        x[0] = bounds[k][0]
+-        transformHg(pCubeVerts[ptr], x, mvp)
+-        ptr += 1
+-      }
+-    }
+-  }
++    out[0] = c;
++    out[1] = s;
++    out[2] = 0;
+ 
+-  //Classify camera against cube faces
+-  var closest = -1
++    out[3] = -s;
++    out[4] = c;
++    out[5] = 0;
+ 
+-  for(var i=0; i<8; ++i) {
+-    var w = pCubeVerts[i][3]
+-    for(var l=0; l<3; ++l) {
+-      cubeVerts[i][l] = pCubeVerts[i][l] / w
+-    }
+-    if(w < 0) {
+-      if(closest < 0) {
+-        closest = i
+-      } else if(cubeVerts[i][2] < cubeVerts[closest][2]) {
+-        closest = i
+-      }
+-    }    
+-  }
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
++}
+ 
+-  if(closest < 0) {
+-    closest = 0
+-    for(var d=0; d<3; ++d) {
+-      var u = (d+2) % 3
+-      var v = (d+1) % 3
+-      var o0 = -1
+-      var o1 = -1
+-      for(var s=0; s<2; ++s) {
+-        var f0 = (s<<d)
+-        var f1 = f0 + (s << u) + ((1-s) << v)
+-        var f2 = f0 + ((1-s) << u) + (s << v)
+-        if(orient(cubeVerts[f0], cubeVerts[f1], cubeVerts[f2], zero3) < 0) {
+-          continue
+-        }
+-        if(s) {
+-          o0 = 1
+-        } else {
+-          o1 = 1
+-        }
+-      }
+-      if(o0 < 0 || o1 < 0) {
+-        if(o1 > o0) {
+-          closest |= 1<<d
+-        }
+-        continue
+-      } 
+-      for(var s=0; s<2; ++s) {
+-        var f0 = (s<<d)
+-        var f1 = f0 + (s << u) + ((1-s) << v)
+-        var f2 = f0 + ((1-s) << u) + (s << v)    
+-        var o = polygonArea([
+-            pCubeVerts[f0], 
+-            pCubeVerts[f1], 
+-            pCubeVerts[f2], 
+-            pCubeVerts[f0+(1<<u)+(1<<v)]])
+-        if(s) {
+-          o0 = o
+-        } else {
+-          o1 = o
+-        }
+-      }
+-      if(o1 > o0) {
+-        closest |= 1<<d
+-        continue
+-      }
+-    }
+-  }
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat3.identity(dest);
++ *     mat3.scale(dest, dest, vec);
++ *
++ * @param {mat3} out mat3 receiving operation result
++ * @param {vec2} v Scaling vector
++ * @returns {mat3} out
++ */
++mat3.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
+ 
+-  var farthest = 7^closest
++    out[3] = 0;
++    out[4] = v[1];
++    out[5] = 0;
+ 
+-  //Find lowest vertex which is not closest closest
+-  var bottom = -1
+-  for(var i=0; i<8; ++i) {
+-    if(i === closest || i === farthest) {
+-      continue
+-    }
+-    if(bottom < 0) {
+-      bottom = i
+-    } else if(cubeVerts[bottom][1] > cubeVerts[i][1]) {
+-      bottom = i
+-    }
+-  }
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
++}
+ 
+-  //Find left/right neighbors of bottom vertex
+-  var left = -1
+-  for(var i=0; i<3; ++i) {
+-    var idx = bottom ^ (1<<i)
+-    if(idx === closest || idx === farthest) {
+-      continue
+-    }
+-    if(left < 0) {
+-      left = idx
+-    }
+-    var v = cubeVerts[idx]
+-    if(v[0] < cubeVerts[left][0]) {
+-      left = idx
+-    }
+-  }
+-  var right = -1
+-  for(var i=0; i<3; ++i) {
+-    var idx = bottom ^ (1<<i)
+-    if(idx === closest || idx === farthest || idx === left) {
+-      continue
+-    }
+-    if(right < 0) {
+-      right = idx
+-    }
+-    var v = cubeVerts[idx]
+-    if(v[0] > cubeVerts[right][0]) {
+-      right = idx
+-    }
+-  }
++/**
++ * Copies the values from a mat2d into a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat2d} a the matrix to copy
++ * @returns {mat3} out
++ **/
++mat3.fromMat2d = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = 0;
+ 
+-  //Determine edge axis coordinates
+-  var cubeEdges = CUBE_EDGES
+-  cubeEdges[0] = cubeEdges[1] = cubeEdges[2] = 0
+-  cubeEdges[bits.log2(left^bottom)] = bottom&left
+-  cubeEdges[bits.log2(bottom^right)] = bottom&right
+-  var top = right ^ 7
+-  if(top === closest || top === farthest) {
+-    top = left ^ 7
+-    cubeEdges[bits.log2(right^top)] = top&right
+-  } else {
+-    cubeEdges[bits.log2(left^top)] = top&left
+-  }
++    out[3] = a[2];
++    out[4] = a[3];
++    out[5] = 0;
+ 
+-  //Determine visible faces
+-  var axis = CUBE_AXIS
+-  var cutCorner = closest
+-  for(var d=0; d<3; ++d) {
+-    if(cutCorner & (1<<d)) {
+-      axis[d] = -1
+-    } else {
+-      axis[d] = 1
+-    }
+-  }
++    out[6] = a[4];
++    out[7] = a[5];
++    out[8] = 1;
++    return out;
++};
+ 
+-  //Return result
+-  return CUBE_RESULT
+-}
+-},{"bit-twiddle":51,"gl-mat4/invert":143,"gl-mat4/multiply":145,"robust-orientation":439,"split-polygon":184}],179:[function(require,module,exports){
+-'use strict'
++/**
++* Calculates a 3x3 matrix from the given quaternion
++*
++* @param {mat3} out mat3 receiving operation result
++* @param {quat} q Quaternion to create matrix from
++*
++* @returns {mat3} out
++*/
++mat3.fromQuat = function (out, q) {
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-module.exports    = createLines
++        xx = x * x2,
++        yx = y * x2,
++        yy = y * y2,
++        zx = z * x2,
++        zy = z * y2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var createShader  = require('./shaders').line
++    out[0] = 1 - yy - zz;
++    out[3] = yx - wz;
++    out[6] = zx + wy;
+ 
+-var MAJOR_AXIS = [0,0,0]
+-var MINOR_AXIS = [0,0,0]
+-var SCREEN_AXIS = [0,0,0]
+-var OFFSET_VEC = [0,0,0]
+-var SHAPE = [1,1]
++    out[1] = yx + wz;
++    out[4] = 1 - xx - zz;
++    out[7] = zy - wx;
+ 
+-function zeroVec(a) {
+-  a[0] = a[1] = a[2] = 0
+-  return a
+-}
++    out[2] = zx - wy;
++    out[5] = zy + wx;
++    out[8] = 1 - xx - yy;
+ 
+-function copyVec(a,b) {
+-  a[0] = b[0]
+-  a[1] = b[1]
+-  a[2] = b[2]
+-  return a
+-}
++    return out;
++};
+ 
+-function Lines(gl, vertBuffer, vao, shader, tickCount, tickOffset, gridCount, gridOffset) {
+-  this.gl         = gl
+-  this.vertBuffer = vertBuffer
+-  this.vao        = vao
+-  this.shader     = shader
+-  this.tickCount  = tickCount
+-  this.tickOffset = tickOffset
+-  this.gridCount  = gridCount
+-  this.gridOffset = gridOffset
+-}
++/**
++* Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix
++*
++* @param {mat3} out mat3 receiving operation result
++* @param {mat4} a Mat4 to derive the normal matrix from
++*
++* @returns {mat3} out
++*/
++mat3.normalFromMat4 = function (out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-var proto = Lines.prototype
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32,
+ 
+-proto.bind = function(model, view, projection) {
+-  this.shader.bind()
+-  this.shader.uniforms.model = model
+-  this.shader.uniforms.view = view
+-  this.shader.uniforms.projection = projection
++        // Calculate the determinant
++        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+ 
+-  SHAPE[0] = this.gl.drawingBufferWidth
+-  SHAPE[1] = this.gl.drawingBufferHeight
++    if (!det) { 
++        return null; 
++    }
++    det = 1.0 / det;
+ 
+-  this.shader.uniforms.screenShape = SHAPE
+-  this.vao.bind()
+-}
++    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
++    out[1] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
++    out[2] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+ 
+-proto.drawAxisLine = function(j, bounds, offset, color, lineWidth) {
+-  var minorAxis = zeroVec(MINOR_AXIS)
+-  this.shader.uniforms.majorAxis = MINOR_AXIS
++    out[3] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
++    out[4] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
++    out[5] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+ 
+-  minorAxis[j] = bounds[1][j] - bounds[0][j]
+-  this.shader.uniforms.minorAxis = minorAxis
++    out[6] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
++    out[7] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
++    out[8] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+ 
+-  var noffset = copyVec(OFFSET_VEC, offset)
+-  noffset[j] += bounds[0][j]
+-  this.shader.uniforms.offset = noffset
++    return out;
++};
+ 
+-  this.shader.uniforms.lineWidth = lineWidth
++/**
++ * Returns a string representation of a mat3
++ *
++ * @param {mat3} mat matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat3.str = function (a) {
++    return 'mat3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
++                    a[3] + ', ' + a[4] + ', ' + a[5] + ', ' + 
++                    a[6] + ', ' + a[7] + ', ' + a[8] + ')';
++};
+ 
+-  this.shader.uniforms.color = color
++/**
++ * Returns Frobenius norm of a mat3
++ *
++ * @param {mat3} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
++ */
++mat3.frob = function (a) {
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2)))
++};
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[(j+2)%3] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.vao.draw(this.gl.TRIANGLES, 6)
++/**
++ * Adds two mat3's
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @returns {mat3} out
++ */
++mat3.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    out[4] = a[4] + b[4];
++    out[5] = a[5] + b[5];
++    out[6] = a[6] + b[6];
++    out[7] = a[7] + b[7];
++    out[8] = a[8] + b[8];
++    return out;
++};
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[(j+1)%3] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.vao.draw(this.gl.TRIANGLES, 6)
+-}
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @returns {mat3} out
++ */
++mat3.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    out[4] = a[4] - b[4];
++    out[5] = a[5] - b[5];
++    out[6] = a[6] - b[6];
++    out[7] = a[7] - b[7];
++    out[8] = a[8] - b[8];
++    return out;
++};
+ 
+-proto.drawAxisTicks = function(j, offset, minorAxis, color, lineWidth) {
+-  if(!this.tickCount[j]) {
+-    return
+-  }
++/**
++ * Alias for {@link mat3.subtract}
++ * @function
++ */
++mat3.sub = mat3.subtract;
+ 
+-  var majorAxis = zeroVec(MAJOR_AXIS)
+-  majorAxis[j]  = 1
+-  this.shader.uniforms.majorAxis = majorAxis
+-  this.shader.uniforms.offset    = offset
+-  this.shader.uniforms.minorAxis = minorAxis
+-  this.shader.uniforms.color     = color
+-  this.shader.uniforms.lineWidth = lineWidth
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat3} out
++ */
++mat3.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    out[4] = a[4] * b;
++    out[5] = a[5] * b;
++    out[6] = a[6] * b;
++    out[7] = a[7] * b;
++    out[8] = a[8] * b;
++    return out;
++};
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[j] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.vao.draw(this.gl.TRIANGLES, this.tickCount[j], this.tickOffset[j])
+-}
++/**
++ * Adds two mat3's after multiplying each element of the second operand by a scalar value.
++ *
++ * @param {mat3} out the receiving vector
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat3} out
++ */
++mat3.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    out[4] = a[4] + (b[4] * scale);
++    out[5] = a[5] + (b[5] * scale);
++    out[6] = a[6] + (b[6] * scale);
++    out[7] = a[7] + (b[7] * scale);
++    out[8] = a[8] + (b[8] * scale);
++    return out;
++};
+ 
++/*
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {mat3} a The first matrix.
++ * @param {mat3} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat3.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && 
++           a[3] === b[3] && a[4] === b[4] && a[5] === b[5] &&
++           a[6] === b[6] && a[7] === b[7] && a[8] === b[8];
++};
+ 
+-proto.drawGrid = function(i, j, bounds, offset, color, lineWidth) {
+-  if(!this.gridCount[i]) {
+-    return
+-  }
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat3} a The first matrix.
++ * @param {mat3} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat3.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5], a6 = a[6], a7 = a[7], a8 = a[8];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5], b6 = a[6], b7 = b[7], b8 = b[8];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
++            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
++            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
++            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
++            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
++            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)));
++};
+ 
+-  var minorAxis = zeroVec(MINOR_AXIS)
+-  minorAxis[j]  = bounds[1][j] - bounds[0][j]
+-  this.shader.uniforms.minorAxis = minorAxis
+ 
+-  var noffset = copyVec(OFFSET_VEC, offset)
+-  noffset[j] += bounds[0][j]
+-  this.shader.uniforms.offset = noffset
++module.exports = mat3;
+ 
+-  var majorAxis = zeroVec(MAJOR_AXIS)
+-  majorAxis[i]  = 1
+-  this.shader.uniforms.majorAxis = majorAxis
++},{"./common.js":155}],159:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[i] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.shader.uniforms.lineWidth = lineWidth
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-  this.shader.uniforms.color = color
+-  this.vao.draw(this.gl.TRIANGLES, this.gridCount[i], this.gridOffset[i])
+-}
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-proto.drawZero = function(j, i, bounds, offset, color, lineWidth) {
+-  var minorAxis = zeroVec(MINOR_AXIS)
+-  this.shader.uniforms.majorAxis = minorAxis
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-  minorAxis[j] = bounds[1][j] - bounds[0][j]
+-  this.shader.uniforms.minorAxis = minorAxis
++var glMatrix = require("./common.js");
+ 
+-  var noffset = copyVec(OFFSET_VEC, offset)
+-  noffset[j] += bounds[0][j]
+-  this.shader.uniforms.offset = noffset
++/**
++ * @class 4x4 Matrix
++ * @name mat4
++ */
++var mat4 = {
++  scalar: {},
++  SIMD: {},
++};
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[i] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.shader.uniforms.lineWidth = lineWidth
++/**
++ * Creates a new identity mat4
++ *
++ * @returns {mat4} a new 4x4 matrix
++ */
++mat4.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(16);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
+ 
+-  this.shader.uniforms.color = color
+-  this.vao.draw(this.gl.TRIANGLES, 6)
+-}
++/**
++ * Creates a new mat4 initialized with values from an existing matrix
++ *
++ * @param {mat4} a matrix to clone
++ * @returns {mat4} a new 4x4 matrix
++ */
++mat4.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(16);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    out[9] = a[9];
++    out[10] = a[10];
++    out[11] = a[11];
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-proto.dispose = function() {
+-  this.vao.dispose()
+-  this.vertBuffer.dispose()
+-  this.shader.dispose()
+-}
++/**
++ * Copy the values from one mat4 to another
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    out[9] = a[9];
++    out[10] = a[10];
++    out[11] = a[11];
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-function createLines(gl, bounds, ticks) {
+-  var vertices    = []
+-  var tickOffset  = [0,0,0]
+-  var tickCount   = [0,0,0]
++/**
++ * Create a new mat4 with the given values
++ *
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m03 Component in column 0, row 3 position (index 3)
++ * @param {Number} m10 Component in column 1, row 0 position (index 4)
++ * @param {Number} m11 Component in column 1, row 1 position (index 5)
++ * @param {Number} m12 Component in column 1, row 2 position (index 6)
++ * @param {Number} m13 Component in column 1, row 3 position (index 7)
++ * @param {Number} m20 Component in column 2, row 0 position (index 8)
++ * @param {Number} m21 Component in column 2, row 1 position (index 9)
++ * @param {Number} m22 Component in column 2, row 2 position (index 10)
++ * @param {Number} m23 Component in column 2, row 3 position (index 11)
++ * @param {Number} m30 Component in column 3, row 0 position (index 12)
++ * @param {Number} m31 Component in column 3, row 1 position (index 13)
++ * @param {Number} m32 Component in column 3, row 2 position (index 14)
++ * @param {Number} m33 Component in column 3, row 3 position (index 15)
++ * @returns {mat4} A new mat4
++ */
++mat4.fromValues = function(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
++    var out = new glMatrix.ARRAY_TYPE(16);
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m03;
++    out[4] = m10;
++    out[5] = m11;
++    out[6] = m12;
++    out[7] = m13;
++    out[8] = m20;
++    out[9] = m21;
++    out[10] = m22;
++    out[11] = m23;
++    out[12] = m30;
++    out[13] = m31;
++    out[14] = m32;
++    out[15] = m33;
++    return out;
++};
+ 
+-  //Create grid lines for each axis/direction
+-  var gridOffset = [0,0,0]
+-  var gridCount  = [0,0,0]
++/**
++ * Set the components of a mat4 to the given values
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m03 Component in column 0, row 3 position (index 3)
++ * @param {Number} m10 Component in column 1, row 0 position (index 4)
++ * @param {Number} m11 Component in column 1, row 1 position (index 5)
++ * @param {Number} m12 Component in column 1, row 2 position (index 6)
++ * @param {Number} m13 Component in column 1, row 3 position (index 7)
++ * @param {Number} m20 Component in column 2, row 0 position (index 8)
++ * @param {Number} m21 Component in column 2, row 1 position (index 9)
++ * @param {Number} m22 Component in column 2, row 2 position (index 10)
++ * @param {Number} m23 Component in column 2, row 3 position (index 11)
++ * @param {Number} m30 Component in column 3, row 0 position (index 12)
++ * @param {Number} m31 Component in column 3, row 1 position (index 13)
++ * @param {Number} m32 Component in column 3, row 2 position (index 14)
++ * @param {Number} m33 Component in column 3, row 3 position (index 15)
++ * @returns {mat4} out
++ */
++mat4.set = function(out, m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m03;
++    out[4] = m10;
++    out[5] = m11;
++    out[6] = m12;
++    out[7] = m13;
++    out[8] = m20;
++    out[9] = m21;
++    out[10] = m22;
++    out[11] = m23;
++    out[12] = m30;
++    out[13] = m31;
++    out[14] = m32;
++    out[15] = m33;
++    return out;
++};
+ 
+-  //Add zero line
+-  vertices.push(
+-    0,0,1,   0,1,1,   0,0,-1,
+-    0,0,-1,  0,1,1,   0,1,-1)
+ 
+-  for(var i=0; i<3; ++i) {
+-    //Axis tick marks
+-    var start = ((vertices.length / 3)|0)
+-    for(var j=0; j<ticks[i].length; ++j) {
+-      var x = +ticks[i][j].x
+-      vertices.push(
+-        x,0,1,   x,1,1,   x,0,-1,
+-        x,0,-1,  x,1,1,   x,1,-1)
+-    }
+-    var end = ((vertices.length / 3)|0)
+-    tickOffset[i] = start
+-    tickCount[i]  = end - start
++/**
++ * Set a mat4 to the identity matrix
++ *
++ * @param {mat4} out the receiving matrix
++ * @returns {mat4} out
++ */
++mat4.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
+ 
+-    //Grid lines
+-    var start = ((vertices.length / 3)|0)
+-    for(var k=0; k<ticks[i].length; ++k) {
+-      var x = +ticks[i][k].x
+-      vertices.push(
+-        x,0,1,   x,1,1,   x,0,-1,
+-        x,0,-1,  x,1,1,   x,1,-1)
+-    }
+-    var end = ((vertices.length / 3)|0)
+-    gridOffset[i] = start
+-    gridCount[i]  = end - start
+-  }
++/**
++ * Transpose the values of a mat4 not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.scalar.transpose = function(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a01 = a[1], a02 = a[2], a03 = a[3],
++            a12 = a[6], a13 = a[7],
++            a23 = a[11];
+ 
+-  //Create cube VAO
+-  var vertBuf = createBuffer(gl, new Float32Array(vertices))
+-  var vao = createVAO(gl, [
+-    { "buffer": vertBuf,
+-      "type": gl.FLOAT,
+-      "size": 3,
+-      "stride": 0,
+-      "offset": 0
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a01;
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a02;
++        out[9] = a12;
++        out[11] = a[14];
++        out[12] = a03;
++        out[13] = a13;
++        out[14] = a23;
++    } else {
++        out[0] = a[0];
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a[1];
++        out[5] = a[5];
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a[2];
++        out[9] = a[6];
++        out[10] = a[10];
++        out[11] = a[14];
++        out[12] = a[3];
++        out[13] = a[7];
++        out[14] = a[11];
++        out[15] = a[15];
+     }
+-  ])
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  return new Lines(gl, vertBuf, vao, shader, tickCount, tickOffset, gridCount, gridOffset)
+-}
+-
+-},{"./shaders":180,"gl-buffer":124,"gl-vao":232}],180:[function(require,module,exports){
+-'use strict'
+ 
++    return out;
++};
+ 
+-var createShader = require('gl-shader')
+-
+-var lineVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, majorAxis, minorAxis, screenAxis;\nuniform float lineWidth;\nuniform vec2 screenShape;\n\nvec3 project(vec3 p) {\n  vec4 pp = projection * view * model * vec4(p, 1.0);\n  return pp.xyz / max(pp.w, 0.0001);\n}\n\nvoid main() {\n  vec3 major = position.x * majorAxis;\n  vec3 minor = position.y * minorAxis;\n\n  vec3 vPosition = major + minor + offset;\n  vec3 pPosition = project(vPosition);\n  vec3 offset = project(vPosition + screenAxis * position.z);\n\n  vec2 screen = normalize((offset - pPosition).xy * screenShape) / screenShape;\n\n  gl_Position = vec4(pPosition + vec3(0.5 * screen * lineWidth, 0), 1.0);\n}\n"
+-var lineFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
+-exports.line = function(gl) {
+-  return createShader(gl, lineVert, lineFrag, null, [
+-    {name: 'position', type: 'vec3'}
+-  ])
+-}
++/**
++ * Transpose the values of a mat4 using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.SIMD.transpose = function(out, a) {
++    var a0, a1, a2, a3,
++        tmp01, tmp23,
++        out0, out1, out2, out3;
+ 
+-var textVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, axis;\nuniform float scale, angle, pixelScale;\nuniform vec2 resolution;\n\nvoid main() {  \n  //Compute plane offset\n  vec2 planeCoord = position.xy * pixelScale;\n  mat2 planeXform = scale * mat2(cos(angle), sin(angle),\n                                -sin(angle), cos(angle));\n  vec2 viewOffset = 2.0 * planeXform * planeCoord / resolution;\n\n  //Compute world offset\n  float axisDistance = position.z;\n  vec3 dataPosition = axisDistance * axis + offset;\n  vec4 worldPosition = model * vec4(dataPosition, 1);\n  \n  //Compute clip position\n  vec4 viewPosition = view * worldPosition;\n  vec4 clipPosition = projection * viewPosition;\n  clipPosition /= clipPosition.w;\n\n  //Apply text offset in clip coordinates\n  clipPosition += vec4(viewOffset, 0, 0);\n\n  //Done\n  gl_Position = clipPosition;\n}"
+-var textFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
+-exports.text = function(gl) {
+-  return createShader(gl, textVert, textFrag, null, [
+-    {name: 'position', type: 'vec3'}
+-  ])
+-}
++    a0 = SIMD.Float32x4.load(a, 0);
++    a1 = SIMD.Float32x4.load(a, 4);
++    a2 = SIMD.Float32x4.load(a, 8);
++    a3 = SIMD.Float32x4.load(a, 12);
+ 
+-var bgVert = "#define GLSLIFY 1\nattribute vec3 position;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection;\nuniform vec3 enable;\nuniform vec3 bounds[2];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  if(dot(normal, enable) > 0.0) {\n    vec3 nPosition = mix(bounds[0], bounds[1], 0.5 * (position + 1.0));\n    gl_Position = projection * view * model * vec4(nPosition, 1.0);\n  } else {\n    gl_Position = vec4(0,0,0,0);\n  }\n  colorChannel = abs(normal);\n}"
+-var bgFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 colors[3];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  gl_FragColor = colorChannel.x * colors[0] + \n                 colorChannel.y * colors[1] +\n                 colorChannel.z * colors[2];\n}"
+-exports.bg = function(gl) {
+-  return createShader(gl, bgVert, bgFrag, null, [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'}
+-  ])
+-}
++    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
++    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
++    out0  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
++    out1  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
++    SIMD.Float32x4.store(out, 0,  out0);
++    SIMD.Float32x4.store(out, 4,  out1);
+ 
+-},{"gl-shader":203}],181:[function(require,module,exports){
+-(function (process){
+-"use strict"
++    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
++    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
++    out2  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
++    out3  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
++    SIMD.Float32x4.store(out, 8,  out2);
++    SIMD.Float32x4.store(out, 12, out3);
+ 
+-module.exports = createTextSprites
++    return out;
++};
+ 
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var vectorizeText = require('vectorize-text')
+-var createShader  = require('./shaders').text
++/**
++ * Transpse a mat4 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.transpose = glMatrix.USE_SIMD ? mat4.SIMD.transpose : mat4.scalar.transpose;
+ 
+-var globals = window || process.global || {}
+-var __TEXT_CACHE  = globals.__TEXT_CACHE || {}
+-globals.__TEXT_CACHE = {}
++/**
++ * Inverts a mat4 not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.scalar.invert = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-//Vertex buffer format for text is:
+-//
+-/// [x,y,z] = Spatial coordinate
+-//
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32,
+ 
+-var VERTEX_SIZE = 3
+-var VERTEX_STRIDE = VERTEX_SIZE * 4
++        // Calculate the determinant
++        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+ 
+-function TextSprites(
+-  gl,
+-  shader,
+-  buffer,
+-  vao) {
+-  this.gl           = gl
+-  this.shader       = shader
+-  this.buffer       = buffer
+-  this.vao          = vao
+-  this.tickOffset   =
+-  this.tickCount    =
+-  this.labelOffset  =
+-  this.labelCount   = null
+-}
++    if (!det) {
++        return null;
++    }
++    det = 1.0 / det;
+ 
+-var proto = TextSprites.prototype
++    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
++    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
++    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
++    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
++    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
++    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
++    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
++    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
++    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
++    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
++    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
++    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
++    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
++    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
++    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
++    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
+ 
+-//Bind textures for rendering
+-var SHAPE = [0,0]
+-proto.bind = function(model, view, projection, pixelScale) {
+-  this.vao.bind()
+-  this.shader.bind()
+-  var uniforms = this.shader.uniforms
+-  uniforms.model = model
+-  uniforms.view = view
+-  uniforms.projection = projection
+-  uniforms.pixelScale = pixelScale
+-  SHAPE[0] = this.gl.drawingBufferWidth
+-  SHAPE[1] = this.gl.drawingBufferHeight
+-  this.shader.uniforms.resolution = SHAPE
+-}
++    return out;
++};
+ 
+-proto.update = function(bounds, labels, labelFont, ticks, tickFont) {
+-  var gl = this.gl
+-  var data = []
++/**
++ * Inverts a mat4 using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.SIMD.invert = function(out, a) {
++  var row0, row1, row2, row3,
++      tmp1,
++      minor0, minor1, minor2, minor3,
++      det,
++      a0 = SIMD.Float32x4.load(a, 0),
++      a1 = SIMD.Float32x4.load(a, 4),
++      a2 = SIMD.Float32x4.load(a, 8),
++      a3 = SIMD.Float32x4.load(a, 12);
+ 
+-  function addItem(t, text, font, size) {
+-    var fontcache = __TEXT_CACHE[font]
+-    if(!fontcache) {
+-      fontcache = __TEXT_CACHE[font] = {}
+-    }
+-    var mesh = fontcache[text]
+-    if(!mesh) {
+-      mesh = fontcache[text] = tryVectorizeText(text, {
+-        triangles: true,
+-        font: font,
+-        textAlign: 'center',
+-        textBaseline: 'middle'
+-      })
+-    }
+-    var scale = (size || 12) / 12
+-    var positions = mesh.positions
+-    var cells = mesh.cells
+-    var lo = [ Infinity, Infinity]
+-    var hi = [-Infinity,-Infinity]
+-    for(var i=0, nc=cells.length; i<nc; ++i) {
+-      var c = cells[i]
+-      for(var j=2; j>=0; --j) {
+-        var p = positions[c[j]]
+-        data.push(scale*p[0], -scale*p[1], t)
+-      }
+-    }
+-  }
++  // Compute matrix adjugate
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
++  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
++  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
++  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
++  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
++  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
++  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
+ 
+-  //Generate sprites for all 3 axes, store data in texture atlases
+-  var tickOffset  = [0,0,0]
+-  var tickCount   = [0,0,0]
+-  var labelOffset = [0,0,0]
+-  var labelCount  = [0,0,0]
+-  for(var d=0; d<3; ++d) {
++  tmp1   = SIMD.Float32x4.mul(row2, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.mul(row1, tmp1);
++  minor1 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
++  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
++  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
+ 
+-    //Generate label
+-    labelOffset[d] = (data.length/VERTEX_SIZE)|0
+-    addItem(0.5*(bounds[0][d]+bounds[1][d]), labels[d], labelFont)
+-    labelCount[d] = ((data.length/VERTEX_SIZE)|0) - labelOffset[d]
++  tmp1   = SIMD.Float32x4.mul(row1, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
++  minor3 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
++  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
+ 
+-    //Generate sprites for tick marks
+-    tickOffset[d] = (data.length/VERTEX_SIZE)|0
+-    for(var i=0; i<ticks[d].length; ++i) {
+-      if(!ticks[d][i].text) {
+-        continue
+-      }
+-      addItem(
+-        ticks[d][i].x,
+-        ticks[d][i].text,
+-        ticks[d][i].font || tickFont,
+-        ticks[d][i].fontSize || 12)
+-    }
+-    tickCount[d] = ((data.length/VERTEX_SIZE)|0) - tickOffset[d]
+-  }
++  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
++  minor2 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
++  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
+ 
+-  this.buffer.update(data)
+-  this.tickOffset = tickOffset
+-  this.tickCount = tickCount
+-  this.labelOffset = labelOffset
+-  this.labelCount = labelCount
+-}
++  tmp1   = SIMD.Float32x4.mul(row0, row1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
+ 
+-//Draws the tick marks for an axis
+-var AXIS = [0,0,0]
+-proto.drawTicks = function(d, scale, angle, offset, color) {
+-  if(!this.tickCount[d]) {
+-    return
+-  }
++  tmp1   = SIMD.Float32x4.mul(row0, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
++  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
+ 
+-  var v = AXIS
+-  v[0] = v[1] = v[2] = 0
+-  v[d] = 1
+-  this.shader.uniforms.axis = v
+-  this.shader.uniforms.color = color
+-  this.shader.uniforms.angle = angle
+-  this.shader.uniforms.scale = scale
+-  this.shader.uniforms.offset = offset
+-  this.vao.draw(this.gl.TRIANGLES, this.tickCount[d], this.tickOffset[d])
+-}
++  tmp1   = SIMD.Float32x4.mul(row0, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
+ 
+-//Draws the text label for an axis
+-var ZERO = [0,0,0]
+-proto.drawLabel = function(d, scale, angle, offset, color) {
+-  if(!this.labelCount[d]) {
+-    return
++  // Compute matrix determinant
++  det   = SIMD.Float32x4.mul(row0, minor0);
++  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 2, 3, 0, 1), det);
++  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 1, 0, 3, 2), det);
++  tmp1  = SIMD.Float32x4.reciprocalApproximation(det);
++  det   = SIMD.Float32x4.sub(
++               SIMD.Float32x4.add(tmp1, tmp1),
++               SIMD.Float32x4.mul(det, SIMD.Float32x4.mul(tmp1, tmp1)));
++  det   = SIMD.Float32x4.swizzle(det, 0, 0, 0, 0);
++  if (!det) {
++      return null;
+   }
+-  this.shader.uniforms.axis = ZERO
+-  this.shader.uniforms.color = color
+-  this.shader.uniforms.angle = angle
+-  this.shader.uniforms.scale = scale
+-  this.shader.uniforms.offset = offset
+-  this.vao.draw(this.gl.TRIANGLES, this.labelCount[d], this.labelOffset[d])
+-}
+ 
+-//Releases all resources attached to this object
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.vao.dispose()
+-  this.buffer.dispose()
++  // Compute matrix inverse
++  SIMD.Float32x4.store(out, 0,  SIMD.Float32x4.mul(det, minor0));
++  SIMD.Float32x4.store(out, 4,  SIMD.Float32x4.mul(det, minor1));
++  SIMD.Float32x4.store(out, 8,  SIMD.Float32x4.mul(det, minor2));
++  SIMD.Float32x4.store(out, 12, SIMD.Float32x4.mul(det, minor3));
++  return out;
+ }
+ 
+-function tryVectorizeText(text, options) {
+-  try {
+-    return vectorizeText(text, options)
+-  } catch(e) {
+-    console.warn('error vectorizing text:', e)
+-    return {
+-      cells: [],
+-      positions: []
+-    }
+-  }
+-}
++/**
++ * Inverts a mat4 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.invert = glMatrix.USE_SIMD ? mat4.SIMD.invert : mat4.scalar.invert;
+ 
+-function createTextSprites(
+-    gl,
+-    bounds,
+-    labels,
+-    labelFont,
+-    ticks,
+-    tickFont) {
++/**
++ * Calculates the adjugate of a mat4 not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.scalar.adjoint = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+ 
+-  var buffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    { "buffer": buffer,
+-      "size": 3
+-    }
+-  ])
++    out[0]  =  (a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22));
++    out[1]  = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));
++    out[2]  =  (a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12));
++    out[3]  = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));
++    out[4]  = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));
++    out[5]  =  (a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22));
++    out[6]  = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));
++    out[7]  =  (a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12));
++    out[8]  =  (a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21));
++    out[9]  = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));
++    out[10] =  (a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11));
++    out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));
++    out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));
++    out[13] =  (a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21));
++    out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));
++    out[15] =  (a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11));
++    return out;
++};
+ 
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
++/**
++ * Calculates the adjugate of a mat4 using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.SIMD.adjoint = function(out, a) {
++  var a0, a1, a2, a3;
++  var row0, row1, row2, row3;
++  var tmp1;
++  var minor0, minor1, minor2, minor3;
+ 
+-  var result = new TextSprites(
+-    gl,
+-    shader,
+-    buffer,
+-    vao)
++  var a0 = SIMD.Float32x4.load(a, 0);
++  var a1 = SIMD.Float32x4.load(a, 4);
++  var a2 = SIMD.Float32x4.load(a, 8);
++  var a3 = SIMD.Float32x4.load(a, 12);
+ 
+-  result.update(bounds, labels, labelFont, ticks, tickFont)
++  // Transpose the source matrix.  Sort of.  Not a true transpose operation
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
++  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
++  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
++  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
+ 
+-  return result
+-}
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
++  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
++  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
++  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
+ 
+-}).call(this,require('_process'))
+-},{"./shaders":180,"_process":60,"gl-buffer":124,"gl-vao":232,"vectorize-text":460}],182:[function(require,module,exports){
+-'use strict'
++  tmp1   = SIMD.Float32x4.mul(row2, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.mul(row1, tmp1);
++  minor1 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
++  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
++  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
+ 
+-exports.create   = defaultTicks
+-exports.equal    = ticksEqual
++  tmp1   = SIMD.Float32x4.mul(row1, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
++  minor3 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
++  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
+ 
+-function prettyPrint(spacing, i) {
+-  var stepStr = spacing + ""
+-  var u = stepStr.indexOf(".")
+-  var sigFigs = 0
+-  if(u >= 0) {
+-    sigFigs = stepStr.length - u - 1
+-  }
+-  var shift = Math.pow(10, sigFigs)
+-  var x = Math.round(spacing * i * shift)
+-  var xstr = x + ""
+-  if(xstr.indexOf("e") >= 0) {
+-    return xstr
+-  }
+-  var xi = x / shift, xf = x % shift
+-  if(x < 0) {
+-    xi = -Math.ceil(xi)|0
+-    xf = (-xf)|0
+-  } else {
+-    xi = Math.floor(xi)|0
+-    xf = xf|0
+-  }
+-  var xis = "" + xi 
+-  if(x < 0) {
+-    xis = "-" + xis
+-  }
+-  if(sigFigs) {
+-    var xs = "" + xf
+-    while(xs.length < sigFigs) {
+-      xs = "0" + xs
+-    }
+-    return xis + "." + xs
+-  } else {
+-    return xis
+-  }
+-}
++  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
++  minor2 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
++  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
+ 
+-function defaultTicks(bounds, tickSpacing) {
+-  var array = []
+-  for(var d=0; d<3; ++d) {
+-    var ticks = []
+-    var m = 0.5*(bounds[0][d]+bounds[1][d])
+-    for(var t=0; t*tickSpacing[d]<=bounds[1][d]; ++t) {
+-      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
+-    }
+-    for(var t=-1; t*tickSpacing[d]>=bounds[0][d]; --t) {
+-      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
+-    }
+-    array.push(ticks)
+-  }
+-  return array
+-}
++  tmp1   = SIMD.Float32x4.mul(row0, row1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
+ 
+-function ticksEqual(ticksA, ticksB) {
+-  for(var i=0; i<3; ++i) {
+-    if(ticksA[i].length !== ticksB[i].length) {
+-      return false
+-    }
+-    for(var j=0; j<ticksA[i].length; ++j) {
+-      var a = ticksA[i][j]
+-      var b = ticksB[i][j]
+-      if(a.x !== b.x || a.text !== b.text) {
+-        return false
+-      }
+-    }
+-  }
+-  return true
+-}
+-},{}],183:[function(require,module,exports){
+-"use strict"
++  tmp1   = SIMD.Float32x4.mul(row0, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
++  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
+ 
+-module.exports = extractPlanes
++  tmp1   = SIMD.Float32x4.mul(row0, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
+ 
+-function extractPlanes(M, zNear, zFar) {
+-  var z  = zNear || 0.0
+-  var zf = zFar || 1.0
+-  return [
+-    [ M[12] + M[0], M[13] + M[1], M[14] + M[2], M[15] + M[3] ],
+-    [ M[12] - M[0], M[13] - M[1], M[14] - M[2], M[15] - M[3] ],
+-    [ M[12] + M[4], M[13] + M[5], M[14] + M[6], M[15] + M[7] ],
+-    [ M[12] - M[4], M[13] - M[5], M[14] - M[6], M[15] - M[7] ],
+-    [ z*M[12] + M[8], z*M[13] + M[9], z*M[14] + M[10], z*M[15] + M[11] ],
+-    [ zf*M[12] - M[8], zf*M[13] - M[9], zf*M[14] - M[10], zf*M[15] - M[11] ]
+-  ]
+-}
+-},{}],184:[function(require,module,exports){
+-"use strict"
++  SIMD.Float32x4.store(out, 0,  minor0);
++  SIMD.Float32x4.store(out, 4,  minor1);
++  SIMD.Float32x4.store(out, 8,  minor2);
++  SIMD.Float32x4.store(out, 12, minor3);
++  return out;
++};
+ 
+-var robustDot = require("robust-dot-product")
+-var robustSum = require("robust-sum")
++/**
++ * Calculates the adjugate of a mat4 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++ mat4.adjoint = glMatrix.USE_SIMD ? mat4.SIMD.adjoint : mat4.scalar.adjoint;
+ 
+-module.exports = splitPolygon
+-module.exports.positive = positive
+-module.exports.negative = negative
++/**
++ * Calculates the determinant of a mat4
++ *
++ * @param {mat4} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat4.determinant = function (a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-function planeT(p, plane) {
+-  var r = robustSum(robustDot(p, plane), [plane[plane.length-1]])
+-  return r[r.length-1]
+-}
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32;
+ 
++    // Calculate the determinant
++    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++};
+ 
+-//Can't do this exactly and emit a floating point result
+-function lerpW(a, wa, b, wb) {
+-  var d = wb - wa
+-  var t = -wa / d
+-  if(t < 0.0) {
+-    t = 0.0
+-  } else if(t > 1.0) {
+-    t = 1.0
+-  }
+-  var ti = 1.0 - t
+-  var n = a.length
+-  var r = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    r[i] = t * a[i] + ti * b[i]
+-  }
+-  return r
+-}
++/**
++ * Multiplies two mat4's explicitly using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand, must be a Float32Array
++ * @param {mat4} b the second operand, must be a Float32Array
++ * @returns {mat4} out
++ */
++mat4.SIMD.multiply = function (out, a, b) {
++    var a0 = SIMD.Float32x4.load(a, 0);
++    var a1 = SIMD.Float32x4.load(a, 4);
++    var a2 = SIMD.Float32x4.load(a, 8);
++    var a3 = SIMD.Float32x4.load(a, 12);
+ 
+-function splitPolygon(points, plane) {
+-  var pos = []
+-  var neg = []
+-  var a = planeT(points[points.length-1], plane)
+-  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
+-    t = points[i]
+-    var b = planeT(t, plane)
+-    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
+-      var p = lerpW(s, b, t, a)
+-      pos.push(p)
+-      neg.push(p.slice())
+-    }
+-    if(b < 0) {
+-      neg.push(t.slice())
+-    } else if(b > 0) {
+-      pos.push(t.slice())
+-    } else {
+-      pos.push(t.slice())
+-      neg.push(t.slice())
+-    }
+-    a = b
+-  }
+-  return { positive: pos, negative: neg }
+-}
++    var b0 = SIMD.Float32x4.load(b, 0);
++    var out0 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 1, 1, 1, 1), a1),
++                       SIMD.Float32x4.add(
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 2, 2, 2, 2), a2),
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 0, out0);
+ 
+-function positive(points, plane) {
+-  var pos = []
+-  var a = planeT(points[points.length-1], plane)
+-  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
+-    t = points[i]
+-    var b = planeT(t, plane)
+-    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
+-      pos.push(lerpW(s, b, t, a))
+-    }
+-    if(b >= 0) {
+-      pos.push(t.slice())
+-    }
+-    a = b
+-  }
+-  return pos
+-}
++    var b1 = SIMD.Float32x4.load(b, 4);
++    var out1 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 1, 1, 1, 1), a1),
++                       SIMD.Float32x4.add(
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 2, 2, 2, 2), a2),
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 4, out1);
+ 
+-function negative(points, plane) {
+-  var neg = []
+-  var a = planeT(points[points.length-1], plane)
+-  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
+-    t = points[i]
+-    var b = planeT(t, plane)
+-    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
+-      neg.push(lerpW(s, b, t, a))
+-    }
+-    if(b <= 0) {
+-      neg.push(t.slice())
+-    }
+-    a = b
+-  }
+-  return neg
+-}
+-},{"robust-dot-product":185,"robust-sum":442}],185:[function(require,module,exports){
+-"use strict"
++    var b2 = SIMD.Float32x4.load(b, 8);
++    var out2 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 1, 1, 1, 1), a1),
++                       SIMD.Float32x4.add(
++                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 2, 2, 2, 2), a2),
++                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 8, out2);
+ 
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
++    var b3 = SIMD.Float32x4.load(b, 12);
++    var out3 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                        SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 1, 1, 1, 1), a1),
++                        SIMD.Float32x4.add(
++                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 2, 2, 2, 2), a2),
++                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 12, out3);
+ 
+-module.exports = robustDotProduct
++    return out;
++};
+ 
+-function robustDotProduct(a, b) {
+-  var r = twoProduct(a[0], b[0])
+-  for(var i=1; i<a.length; ++i) {
+-    r = robustSum(r, twoProduct(a[i], b[i]))
+-  }
+-  return r
+-}
+-},{"robust-sum":442,"two-product":456}],186:[function(require,module,exports){
+-"use strict"
++/**
++ * Multiplies two mat4's explicitly not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++mat4.scalar.multiply = function (out, a, b) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+ 
+-module.exports = axesProperties
++    // Cache only the current line of the second matrix
++    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-var getPlanes   = require("extract-frustum-planes")
+-var splitPoly   = require("split-polygon")
+-var cubeParams  = require("./lib/cube.js")
+-var m4mul       = require("gl-mat4/multiply")
+-var m4transpose = require("gl-mat4/transpose")
+-var v4transformMat4 = require("gl-vec4/transformMat4")
++    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
++    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-var identity    = new Float32Array([
+-    1, 0, 0, 0,
+-    0, 1, 0, 0,
+-    0, 0, 1, 0,
+-    0, 0, 0, 1
+-  ])
++    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
++    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-var mvp         = new Float32Array(16)
++    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
++    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    return out;
++};
+ 
+-function AxesRange3D(lo, hi, pixelsPerDataUnit) {
+-  this.lo = lo
+-  this.hi = hi
+-  this.pixelsPerDataUnit = pixelsPerDataUnit
+-}
++/**
++ * Multiplies two mat4's using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++mat4.multiply = glMatrix.USE_SIMD ? mat4.SIMD.multiply : mat4.scalar.multiply;
+ 
+-var SCRATCH_P = [0,0,0,1]
+-var SCRATCH_Q = [0,0,0,1]
++/**
++ * Alias for {@link mat4.multiply}
++ * @function
++ */
++mat4.mul = mat4.multiply;
+ 
+-function gradient(result, M, v, width, height) {
+-  for(var i=0; i<3; ++i) {
+-    var p = SCRATCH_P
+-    var q = SCRATCH_Q
+-    for(var j=0; j<3; ++j) {
+-      q[j] = p[j] = v[j]
+-    }
+-    q[3] = p[3] = 1
++/**
++ * Translate a mat4 by the given vector not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
++ */
++mat4.scalar.translate = function (out, a, v) {
++    var x = v[0], y = v[1], z = v[2],
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23;
+ 
+-    q[i] += 1
+-    v4transformMat4(q, q, M)
+-    if(q[3] < 0) {
+-      result[i] = Infinity
+-    }
++    if (a === out) {
++        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
++        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
++        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
++        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
++    } else {
++        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-    p[i] -= 1
+-    v4transformMat4(p, p, M)
+-    if(p[3] < 0) {
+-      result[i] = Infinity
+-    }
++        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
++        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
++        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
+ 
+-    var dx = (p[0]/p[3] - q[0]/q[3]) * width
+-    var dy = (p[1]/p[3] - q[1]/q[3]) * height
++        out[12] = a00 * x + a10 * y + a20 * z + a[12];
++        out[13] = a01 * x + a11 * y + a21 * z + a[13];
++        out[14] = a02 * x + a12 * y + a22 * z + a[14];
++        out[15] = a03 * x + a13 * y + a23 * z + a[15];
++    }
+ 
+-    result[i] = 0.25 * Math.sqrt(dx*dx + dy*dy)
+-  }
+-  return result
+-}
++    return out;
++};
+ 
+-var RANGES = [
+-  new AxesRange3D(Infinity, -Infinity, Infinity),
+-  new AxesRange3D(Infinity, -Infinity, Infinity),
+-  new AxesRange3D(Infinity, -Infinity, Infinity)
+-]
++/**
++ * Translates a mat4 by the given vector using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
++ */
++mat4.SIMD.translate = function (out, a, v) {
++    var a0 = SIMD.Float32x4.load(a, 0),
++        a1 = SIMD.Float32x4.load(a, 4),
++        a2 = SIMD.Float32x4.load(a, 8),
++        a3 = SIMD.Float32x4.load(a, 12),
++        vec = SIMD.Float32x4(v[0], v[1], v[2] , 0);
+ 
+-var SCRATCH_X = [0,0,0]
++    if (a !== out) {
++        out[0] = a[0]; out[1] = a[1]; out[2] = a[2]; out[3] = a[3];
++        out[4] = a[4]; out[5] = a[5]; out[6] = a[6]; out[7] = a[7];
++        out[8] = a[8]; out[9] = a[9]; out[10] = a[10]; out[11] = a[11];
++    }
+ 
+-function axesProperties(axes, camera, width, height, params) {
+-  var model       = camera.model || identity
+-  var view        = camera.view || identity
+-  var projection  = camera.projection || identity
+-  var bounds      = axes.bounds
+-  var params      = params || cubeParams(model, view, projection, bounds)
+-  var axis        = params.axis
+-  var edges       = params.edges
++    a0 = SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0));
++    a1 = SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1));
++    a2 = SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2));
+ 
+-  m4mul(mvp, view, model)
+-  m4mul(mvp, projection, mvp)
++    var t0 = SIMD.Float32x4.add(a0, SIMD.Float32x4.add(a1, SIMD.Float32x4.add(a2, a3)));
++    SIMD.Float32x4.store(out, 12, t0);
+ 
+-  //Calculate the following properties for each axis:
+-  //
+-  // * lo - start of visible range for each axis in tick coordinates
+-  // * hi - end of visible range for each axis in tick coordinates
+-  // * ticksPerPixel - pixel density of tick marks for the axis
+-  //
+-  var ranges = RANGES
+-  for(var i=0; i<3; ++i) {
+-    ranges[i].lo = Infinity
+-    ranges[i].hi = -Infinity
+-    ranges[i].pixelsPerDataUnit = Infinity
+-  }
++    return out;
++};
+ 
+-  //Compute frustum planes, intersect with box
+-  var frustum = getPlanes(m4transpose(mvp, mvp))
+-  m4transpose(mvp, mvp)
++/**
++ * Translates a mat4 by the given vector using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
++ */
++mat4.translate = glMatrix.USE_SIMD ? mat4.SIMD.translate : mat4.scalar.translate;
+ 
+-  //Loop over vertices of viewable box
+-  for(var d=0; d<3; ++d) {
+-    var u = (d+1)%3
+-    var v = (d+2)%3
+-    var x = SCRATCH_X
+-i_loop:
+-    for(var i=0; i<2; ++i) {
+-      var poly = []
++/**
++ * Scales the mat4 by the dimensions in the given vec3 not using vectorization
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ **/
++mat4.scalar.scale = function(out, a, v) {
++    var x = v[0], y = v[1], z = v[2];
+ 
+-      if((axis[d] < 0) === !!i) {
+-        continue
+-      }
++    out[0] = a[0] * x;
++    out[1] = a[1] * x;
++    out[2] = a[2] * x;
++    out[3] = a[3] * x;
++    out[4] = a[4] * y;
++    out[5] = a[5] * y;
++    out[6] = a[6] * y;
++    out[7] = a[7] * y;
++    out[8] = a[8] * z;
++    out[9] = a[9] * z;
++    out[10] = a[10] * z;
++    out[11] = a[11] * z;
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-      x[d] = bounds[i][d]
+-      for(var j=0; j<2; ++j) {
+-        x[u] = bounds[j^i][u]
+-        for(var k=0; k<2; ++k) {
+-          x[v] = bounds[k^j^i][v]
+-          poly.push(x.slice())
+-        }
+-      }
+-      for(var j=0; j<frustum.length; ++j) {
+-        if(poly.length === 0) {
+-          continue i_loop
+-        }
+-        poly = splitPoly.positive(poly, frustum[j])
+-      }
++/**
++ * Scales the mat4 by the dimensions in the given vec3 using vectorization
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ **/
++mat4.SIMD.scale = function(out, a, v) {
++    var a0, a1, a2;
++    var vec = SIMD.Float32x4(v[0], v[1], v[2], 0);
+ 
+-      //Loop over vertices of polygon to find extremal points
+-      for(var j=0; j<poly.length; ++j) {
+-        var v = poly[j]
+-        var grad = gradient(SCRATCH_X, mvp, v, width, height)
+-        for(var k=0; k<3; ++k) {
+-          ranges[k].lo = Math.min(ranges[k].lo, v[k])
+-          ranges[k].hi = Math.max(ranges[k].hi, v[k])
+-          if(k !== d) {
+-            ranges[k].pixelsPerDataUnit = Math.min(ranges[k].pixelsPerDataUnit, Math.abs(grad[k]))
+-          }
+-        }
+-      }
+-    }
+-  }
++    a0 = SIMD.Float32x4.load(a, 0);
++    SIMD.Float32x4.store(
++        out, 0, SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0)));
+ 
+-  return ranges
+-}
++    a1 = SIMD.Float32x4.load(a, 4);
++    SIMD.Float32x4.store(
++        out, 4, SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1)));
+ 
+-},{"./lib/cube.js":178,"extract-frustum-planes":183,"gl-mat4/multiply":145,"gl-mat4/transpose":153,"gl-vec4/transformMat4":233,"split-polygon":184}],187:[function(require,module,exports){
+-'use strict'
++    a2 = SIMD.Float32x4.load(a, 8);
++    SIMD.Float32x4.store(
++        out, 8, SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2)));
+ 
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-var createShader = require('gl-shader')
++/**
++ * Scales the mat4 by the dimensions in the given vec3 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ */
++mat4.scale = glMatrix.USE_SIMD ? mat4.SIMD.scale : mat4.scalar.scale;
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, color;\nattribute float weight;\n\nuniform mat4 model, view, projection;\nuniform vec3 coordinates[3];\nuniform vec4 colors[3];\nuniform vec2 screenShape;\nuniform float lineWidth;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vertexPosition = mix(coordinates[0],\n    mix(coordinates[2], coordinates[1], 0.5 * (position + 1.0)), abs(position));\n\n  vec4 clipPos = projection * view * model * vec4(vertexPosition, 1.0);\n  vec2 clipOffset = (projection * view * model * vec4(color, 0.0)).xy;\n  vec2 delta = weight * clipOffset * screenShape;\n  vec2 lineOffset = normalize(vec2(delta.y, -delta.x)) / screenShape;\n\n  gl_Position   = vec4(clipPos.xy + clipPos.w * 0.5 * lineWidth * lineOffset, clipPos.z, clipPos.w);\n  fragColor     = color.x * colors[0] + color.y * colors[1] + color.z * colors[2];\n}\n"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragColor;\n\nvoid main() {\n  gl_FragColor = fragColor;\n}"
++/**
++ * Rotates a mat4 by the given angle around the given axis
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @param {vec3} axis the axis to rotate around
++ * @returns {mat4} out
++ */
++mat4.rotate = function (out, a, rad, axis) {
++    var x = axis[0], y = axis[1], z = axis[2],
++        len = Math.sqrt(x * x + y * y + z * z),
++        s, c, t,
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23,
++        b00, b01, b02,
++        b10, b11, b12,
++        b20, b21, b22;
+ 
+-module.exports = function(gl) {
+-  return createShader(gl, vertSrc, fragSrc, null, [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'color', type: 'vec3'},
+-    {name: 'weight', type: 'float'}
+-  ])
+-}
++    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
+ 
+-},{"gl-shader":203}],188:[function(require,module,exports){
+-'use strict'
++    len = 1 / len;
++    x *= len;
++    y *= len;
++    z *= len;
+ 
+-var createBuffer = require('gl-buffer')
+-var createVAO = require('gl-vao')
+-var createShader = require('./shaders/index')
++    s = Math.sin(rad);
++    c = Math.cos(rad);
++    t = 1 - c;
+ 
+-module.exports = createSpikes
++    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-var identity = [1,0,0,0,
+-                0,1,0,0,
+-                0,0,1,0,
+-                0,0,0,1]
++    // Construct the elements of the rotation matrix
++    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
++    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
++    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
+ 
+-function AxisSpikes(gl, buffer, vao, shader) {
+-  this.gl         = gl
+-  this.buffer     = buffer
+-  this.vao        = vao
+-  this.shader     = shader
+-  this.pixelRatio = 1
+-  this.bounds     = [[-1000,-1000,-1000], [1000,1000,1000]]
+-  this.position   = [0,0,0]
+-  this.lineWidth  = [2,2,2]
+-  this.colors     = [[0,0,0,1], [0,0,0,1], [0,0,0,1]]
+-  this.enabled    = [true,true,true]
+-  this.drawSides  = [true,true,true]
+-  this.axes       = null
+-}
++    // Perform rotation-specific matrix multiplication
++    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
++    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
++    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
++    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
++    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
++    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
++    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
++    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
++    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
++    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
++    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
++    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
+ 
+-var proto = AxisSpikes.prototype
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
++    return out;
++};
+ 
+-var OUTER_FACE = [0,0,0]
+-var INNER_FACE = [0,0,0]
++/**
++ * Rotates a matrix by the given angle around the X axis not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.scalar.rotateX = function (out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
+ 
+-var SHAPE = [0,0]
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[0]  = a[0];
++        out[1]  = a[1];
++        out[2]  = a[2];
++        out[3]  = a[3];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
+ 
+-proto.isTransparent = function() {
+-  return false
+-}
++    // Perform axis-specific matrix multiplication
++    out[4] = a10 * c + a20 * s;
++    out[5] = a11 * c + a21 * s;
++    out[6] = a12 * c + a22 * s;
++    out[7] = a13 * c + a23 * s;
++    out[8] = a20 * c - a10 * s;
++    out[9] = a21 * c - a11 * s;
++    out[10] = a22 * c - a12 * s;
++    out[11] = a23 * c - a13 * s;
++    return out;
++};
+ 
+-proto.drawTransparent = function(camera) {}
++/**
++ * Rotates a matrix by the given angle around the X axis using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.SIMD.rotateX = function (out, a, rad) {
++    var s = SIMD.Float32x4.splat(Math.sin(rad)),
++        c = SIMD.Float32x4.splat(Math.cos(rad));
+ 
+-proto.draw = function(camera) {
+-  var gl = this.gl
+-  var vao = this.vao
+-  var shader = this.shader
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++      out[0]  = a[0];
++      out[1]  = a[1];
++      out[2]  = a[2];
++      out[3]  = a[3];
++      out[12] = a[12];
++      out[13] = a[13];
++      out[14] = a[14];
++      out[15] = a[15];
++    }
+ 
+-  vao.bind()
+-  shader.bind()
++    // Perform axis-specific matrix multiplication
++    var a_1 = SIMD.Float32x4.load(a, 4);
++    var a_2 = SIMD.Float32x4.load(a, 8);
++    SIMD.Float32x4.store(out, 4,
++                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_2, s)));
++    SIMD.Float32x4.store(out, 8,
++                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_2, c), SIMD.Float32x4.mul(a_1, s)));
++    return out;
++};
+ 
+-  var model      = camera.model || identity
+-  var view       = camera.view || identity
+-  var projection = camera.projection || identity
++/**
++ * Rotates a matrix by the given angle around the X axis using SIMD if availabe and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.rotateX = glMatrix.USE_SIMD ? mat4.SIMD.rotateX : mat4.scalar.rotateX;
+ 
+-  var axis
+-  if(this.axes) {
+-    axis = this.axes.lastCubeProps.axis
+-  }
++/**
++ * Rotates a matrix by the given angle around the Y axis not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.scalar.rotateY = function (out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
+ 
+-  var outerFace = OUTER_FACE
+-  var innerFace = INNER_FACE
+-  for(var i=0; i<3; ++i) {
+-    if(axis && axis[i] < 0) {
+-      outerFace[i] = this.bounds[0][i]
+-      innerFace[i] = this.bounds[1][i]
+-    } else {
+-      outerFace[i] = this.bounds[1][i]
+-      innerFace[i] = this.bounds[0][i]
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[4]  = a[4];
++        out[5]  = a[5];
++        out[6]  = a[6];
++        out[7]  = a[7];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+-  }
+ 
+-  SHAPE[0] = gl.drawingBufferWidth
+-  SHAPE[1] = gl.drawingBufferHeight
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c - a20 * s;
++    out[1] = a01 * c - a21 * s;
++    out[2] = a02 * c - a22 * s;
++    out[3] = a03 * c - a23 * s;
++    out[8] = a00 * s + a20 * c;
++    out[9] = a01 * s + a21 * c;
++    out[10] = a02 * s + a22 * c;
++    out[11] = a03 * s + a23 * c;
++    return out;
++};
+ 
+-  shader.uniforms.model       = model
+-  shader.uniforms.view        = view
+-  shader.uniforms.projection  = projection
+-  shader.uniforms.coordinates = [this.position, outerFace, innerFace]
+-  shader.uniforms.colors      = this.colors
+-  shader.uniforms.screenShape = SHAPE
++/**
++ * Rotates a matrix by the given angle around the Y axis using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.SIMD.rotateY = function (out, a, rad) {
++    var s = SIMD.Float32x4.splat(Math.sin(rad)),
++        c = SIMD.Float32x4.splat(Math.cos(rad));
+ 
+-  for(var i=0; i<3; ++i) {
+-    shader.uniforms.lineWidth = this.lineWidth[i] * this.pixelRatio
+-    if(this.enabled[i]) {
+-      vao.draw(gl.TRIANGLES, 6, 6*i)
+-      if(this.drawSides[i]) {
+-        vao.draw(gl.TRIANGLES, 12, 18+12*i)
+-      }
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[4]  = a[4];
++        out[5]  = a[5];
++        out[6]  = a[6];
++        out[7]  = a[7];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+-  }
+ 
+-  vao.unbind()
+-}
++    // Perform axis-specific matrix multiplication
++    var a_0 = SIMD.Float32x4.load(a, 0);
++    var a_2 = SIMD.Float32x4.load(a, 8);
++    SIMD.Float32x4.store(out, 0,
++                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_2, s)));
++    SIMD.Float32x4.store(out, 8,
++                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, s), SIMD.Float32x4.mul(a_2, c)));
++    return out;
++};
+ 
+-proto.update = function(options) {
+-  if(!options) {
+-    return
+-  }
+-  if("bounds" in options) {
+-    this.bounds = options.bounds
+-  }
+-  if("position" in options) {
+-    this.position = options.position
+-  }
+-  if("lineWidth" in options) {
+-    this.lineWidth = options.lineWidth
+-  }
+-  if("colors" in options) {
+-    this.colors = options.colors
+-  }
+-  if("enabled" in options) {
+-    this.enabled = options.enabled
+-  }
+-  if("drawSides" in options) {
+-    this.drawSides = options.drawSides
+-  }
+-}
++/**
++ * Rotates a matrix by the given angle around the Y axis if SIMD available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++ mat4.rotateY = glMatrix.USE_SIMD ? mat4.SIMD.rotateY : mat4.scalar.rotateY;
+ 
+-proto.dispose = function() {
+-  this.vao.dispose()
+-  this.buffer.dispose()
+-  this.shader.dispose()
+-}
++/**
++ * Rotates a matrix by the given angle around the Z axis not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.scalar.rotateZ = function (out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7];
+ 
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[8]  = a[8];
++        out[9]  = a[9];
++        out[10] = a[10];
++        out[11] = a[11];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
+ 
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c + a10 * s;
++    out[1] = a01 * c + a11 * s;
++    out[2] = a02 * c + a12 * s;
++    out[3] = a03 * c + a13 * s;
++    out[4] = a10 * c - a00 * s;
++    out[5] = a11 * c - a01 * s;
++    out[6] = a12 * c - a02 * s;
++    out[7] = a13 * c - a03 * s;
++    return out;
++};
+ 
+-function createSpikes(gl, options) {
+-  //Create buffers
+-  var data = [ ]
++/**
++ * Rotates a matrix by the given angle around the Z axis using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.SIMD.rotateZ = function (out, a, rad) {
++    var s = SIMD.Float32x4.splat(Math.sin(rad)),
++        c = SIMD.Float32x4.splat(Math.cos(rad));
+ 
+-  function line(x,y,z,i,l,h) {
+-    var row = [x,y,z,  0,0,0,  1]
+-    row[i+3] = 1
+-    row[i] = l
+-    data.push.apply(data, row)
+-    row[6] = -1
+-    data.push.apply(data, row)
+-    row[i] = h
+-    data.push.apply(data, row)
+-    data.push.apply(data, row)
+-    row[6] = 1
+-    data.push.apply(data, row)
+-    row[i] = l
+-    data.push.apply(data, row)
+-  }
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[8]  = a[8];
++        out[9]  = a[9];
++        out[10] = a[10];
++        out[11] = a[11];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
+ 
+-  line(0,0,0, 0, 0, 1)
+-  line(0,0,0, 1, 0, 1)
+-  line(0,0,0, 2, 0, 1)
++    // Perform axis-specific matrix multiplication
++    var a_0 = SIMD.Float32x4.load(a, 0);
++    var a_1 = SIMD.Float32x4.load(a, 4);
++    SIMD.Float32x4.store(out, 0,
++                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_1, s)));
++    SIMD.Float32x4.store(out, 4,
++                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_0, s)));
++    return out;
++};
+ 
+-  line(1,0,0,  1,  -1,1)
+-  line(1,0,0,  2,  -1,1)
++/**
++ * Rotates a matrix by the given angle around the Z axis if SIMD available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++ mat4.rotateZ = glMatrix.USE_SIMD ? mat4.SIMD.rotateZ : mat4.scalar.rotateZ;
+ 
+-  line(0,1,0,  0,  -1,1)
+-  line(0,1,0,  2,  -1,1)
++/**
++ * Creates a matrix from a vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, dest, vec);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {vec3} v Translation vector
++ * @returns {mat4} out
++ */
++mat4.fromTranslation = function(out, v) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
++    return out;
++}
+ 
+-  line(0,0,1,  0,  -1,1)
+-  line(0,0,1,  1,  -1,1)
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.scale(dest, dest, vec);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {vec3} v Scaling vector
++ * @returns {mat4} out
++ */
++mat4.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = v[1];
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = v[2];
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++}
+ 
+-  var buffer = createBuffer(gl, data)
+-  var vao = createVAO(gl, [{
+-    type: gl.FLOAT,
+-    buffer: buffer,
+-    size: 3,
+-    offset: 0,
+-    stride: 28
+-  }, {
+-    type: gl.FLOAT,
+-    buffer: buffer,
+-    size: 3,
+-    offset: 12,
+-    stride: 28
+-  }, {
+-    type: gl.FLOAT,
+-    buffer: buffer,
+-    size: 1,
+-    offset: 24,
+-    stride: 28
+-  }])
++/**
++ * Creates a matrix from a given angle around a given axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotate(dest, dest, rad, axis);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @param {vec3} axis the axis to rotate around
++ * @returns {mat4} out
++ */
++mat4.fromRotation = function(out, rad, axis) {
++    var x = axis[0], y = axis[1], z = axis[2],
++        len = Math.sqrt(x * x + y * y + z * z),
++        s, c, t;
+ 
+-  //Create shader
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location = 1
+-  shader.attributes.weight.location = 2
++    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
+ 
+-  //Create spike object
+-  var spikes = new AxisSpikes(gl, buffer, vao, shader)
++    len = 1 / len;
++    x *= len;
++    y *= len;
++    z *= len;
+ 
+-  //Set parameters
+-  spikes.update(options)
++    s = Math.sin(rad);
++    c = Math.cos(rad);
++    t = 1 - c;
+ 
+-  //Return resulting object
+-  return spikes
++    // Perform rotation-specific matrix multiplication
++    out[0] = x * x * t + c;
++    out[1] = y * x * t + z * s;
++    out[2] = z * x * t - y * s;
++    out[3] = 0;
++    out[4] = x * y * t - z * s;
++    out[5] = y * y * t + c;
++    out[6] = z * y * t + x * s;
++    out[7] = 0;
++    out[8] = x * z * t + y * s;
++    out[9] = y * z * t - x * s;
++    out[10] = z * z * t + c;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
+ }
+ 
+-},{"./shaders/index":187,"gl-buffer":124,"gl-vao":232}],189:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = createScene
+-
+-var createCamera = require('3d-view-controls')
+-var createAxes   = require('gl-axes3d')
+-var axesRanges   = require('gl-axes3d/properties')
+-var createSpikes = require('gl-spikes3d')
+-var createSelect = require('gl-select-static')
+-var createFBO    = require('gl-fbo')
+-var drawTriangle = require('a-big-triangle')
+-var mouseChange  = require('mouse-change')
+-var perspective  = require('gl-mat4/perspective')
+-var createShader = require('./lib/shader')
++/**
++ * Creates a matrix from the given angle around the X axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotateX(dest, dest, rad);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.fromXRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
+ 
+-function MouseSelect() {
+-  this.mouse          = [-1,-1]
+-  this.screen         = null
+-  this.distance       = Infinity
+-  this.index          = null
+-  this.dataCoordinate = null
+-  this.dataPosition   = null
+-  this.object         = null
+-  this.data           = null
++    // Perform axis-specific matrix multiplication
++    out[0]  = 1;
++    out[1]  = 0;
++    out[2]  = 0;
++    out[3]  = 0;
++    out[4] = 0;
++    out[5] = c;
++    out[6] = s;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = -s;
++    out[10] = c;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
+ }
+ 
+-function getContext(canvas, options) {
+-  var gl = null
+-  try {
+-    gl = canvas.getContext('webgl', options)
+-    if(!gl) {
+-      gl = canvas.getContext('experimental-webgl', options)
+-    }
+-  } catch(e) {
+-    return null
+-  }
+-  return gl
+-}
++/**
++ * Creates a matrix from the given angle around the Y axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotateY(dest, dest, rad);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.fromYRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
+ 
+-function roundUpPow10(x) {
+-  var y = Math.round(Math.log(Math.abs(x)) / Math.log(10))
+-  if(y < 0) {
+-    var base = Math.round(Math.pow(10, -y))
+-    return Math.ceil(x*base) / base
+-  } else if(y > 0) {
+-    var base = Math.round(Math.pow(10, y))
+-    return Math.ceil(x/base) * base
+-  }
+-  return Math.ceil(x)
++    // Perform axis-specific matrix multiplication
++    out[0]  = c;
++    out[1]  = 0;
++    out[2]  = -s;
++    out[3]  = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = s;
++    out[9] = 0;
++    out[10] = c;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
+ }
+ 
+-function defaultBool(x) {
+-  if(typeof x === 'boolean') {
+-    return x
+-  }
+-  return true
++/**
++ * Creates a matrix from the given angle around the Z axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotateZ(dest, dest, rad);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.fromZRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
++
++    // Perform axis-specific matrix multiplication
++    out[0]  = c;
++    out[1]  = s;
++    out[2]  = 0;
++    out[3]  = 0;
++    out[4] = -s;
++    out[5] = c;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
+ }
+ 
+-function createScene(options) {
+-  options = options || {}
++/**
++ * Creates a matrix from a quaternion rotation and vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @returns {mat4} out
++ */
++mat4.fromRotationTranslation = function (out, q, v) {
++    // Quaternion math
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-  var stopped = false
++        xx = x * x2,
++        xy = x * y2,
++        xz = x * z2,
++        yy = y * y2,
++        yz = y * z2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-  var pixelRatio = options.pixelRatio || parseFloat(window.devicePixelRatio)
++    out[0] = 1 - (yy + zz);
++    out[1] = xy + wz;
++    out[2] = xz - wy;
++    out[3] = 0;
++    out[4] = xy - wz;
++    out[5] = 1 - (xx + zz);
++    out[6] = yz + wx;
++    out[7] = 0;
++    out[8] = xz + wy;
++    out[9] = yz - wx;
++    out[10] = 1 - (xx + yy);
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
+ 
+-  var canvas = options.canvas
+-  if(!canvas) {
+-    canvas = document.createElement('canvas')
+-    if(options.container) {
+-      var container = options.container
+-      container.appendChild(canvas)
+-    } else {
+-      document.body.appendChild(canvas)
+-    }
+-  }
++    return out;
++};
+ 
+-  var gl = options.gl
+-  if(!gl) {
+-    gl = getContext(canvas,
+-      options.glOptions || {
+-        premultipliedAlpha: true,
+-        antialias: true
+-      })
+-  }
+-  if(!gl) {
+-    throw new Error('webgl not supported')
+-  }
++/**
++ * Returns the translation vector component of a transformation
++ *  matrix. If a matrix is built with fromRotationTranslation,
++ *  the returned vector will be the same as the translation vector
++ *  originally supplied.
++ * @param  {vec3} out Vector to receive translation component
++ * @param  {mat4} mat Matrix to be decomposed (input)
++ * @return {vec3} out
++ */
++mat4.getTranslation = function (out, mat) {
++  out[0] = mat[12];
++  out[1] = mat[13];
++  out[2] = mat[14];
+ 
+-  //Initial bounds
+-  var bounds = options.bounds || [[-10,-10,-10], [10,10,10]]
++  return out;
++};
+ 
+-  //Create selection
+-  var selection = new MouseSelect()
++/**
++ * Returns a quaternion representing the rotational component
++ *  of a transformation matrix. If a matrix is built with
++ *  fromRotationTranslation, the returned quaternion will be the
++ *  same as the quaternion originally supplied.
++ * @param {quat} out Quaternion to receive the rotation component
++ * @param {mat4} mat Matrix to be decomposed (input)
++ * @return {quat} out
++ */
++mat4.getRotation = function (out, mat) {
++  // Algorithm taken from http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
++  var trace = mat[0] + mat[5] + mat[10];
++  var S = 0;
+ 
+-  //Accumulation buffer
+-  var accumBuffer = createFBO(gl,
+-    [gl.drawingBufferWidth, gl.drawingBufferHeight], {
+-      preferFloat: true
+-    })
++  if (trace > 0) { 
++    S = Math.sqrt(trace + 1.0) * 2;
++    out[3] = 0.25 * S;
++    out[0] = (mat[6] - mat[9]) / S;
++    out[1] = (mat[8] - mat[2]) / S; 
++    out[2] = (mat[1] - mat[4]) / S; 
++  } else if ((mat[0] > mat[5])&(mat[0] > mat[10])) { 
++    S = Math.sqrt(1.0 + mat[0] - mat[5] - mat[10]) * 2;
++    out[3] = (mat[6] - mat[9]) / S;
++    out[0] = 0.25 * S;
++    out[1] = (mat[1] + mat[4]) / S; 
++    out[2] = (mat[8] + mat[2]) / S; 
++  } else if (mat[5] > mat[10]) { 
++    S = Math.sqrt(1.0 + mat[5] - mat[0] - mat[10]) * 2;
++    out[3] = (mat[8] - mat[2]) / S;
++    out[0] = (mat[1] + mat[4]) / S; 
++    out[1] = 0.25 * S;
++    out[2] = (mat[6] + mat[9]) / S; 
++  } else { 
++    S = Math.sqrt(1.0 + mat[10] - mat[0] - mat[5]) * 2;
++    out[3] = (mat[1] - mat[4]) / S;
++    out[0] = (mat[8] + mat[2]) / S;
++    out[1] = (mat[6] + mat[9]) / S;
++    out[2] = 0.25 * S;
++  }
+ 
+-  var accumShader = createShader(gl)
++  return out;
++};
+ 
+-  //Create a camera
+-  var cameraOptions = options.camera || {
+-    eye:    [2,0,0],
+-    center: [0,0,0],
+-    up:     [0,1,0],
+-    zoomMin: 0.1,
+-    zoomMax: 100,
+-    mode:    'turntable'
+-  }
++/**
++ * Creates a matrix from a quaternion rotation, vector translation and vector scale
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *     mat4.scale(dest, scale)
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @param {vec3} s Scaling vector
++ * @returns {mat4} out
++ */
++mat4.fromRotationTranslationScale = function (out, q, v, s) {
++    // Quaternion math
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-  //Create axes
+-  var axesOptions = options.axes || {}
+-  var axes = createAxes(gl, axesOptions)
+-  axes.enable = !axesOptions.disable
++        xx = x * x2,
++        xy = x * y2,
++        xz = x * z2,
++        yy = y * y2,
++        yz = y * z2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2,
++        sx = s[0],
++        sy = s[1],
++        sz = s[2];
+ 
+-  //Create spikes
+-  var spikeOptions = options.spikes || {}
+-  var spikes = createSpikes(gl, spikeOptions)
++    out[0] = (1 - (yy + zz)) * sx;
++    out[1] = (xy + wz) * sx;
++    out[2] = (xz - wy) * sx;
++    out[3] = 0;
++    out[4] = (xy - wz) * sy;
++    out[5] = (1 - (xx + zz)) * sy;
++    out[6] = (yz + wx) * sy;
++    out[7] = 0;
++    out[8] = (xz + wy) * sz;
++    out[9] = (yz - wx) * sz;
++    out[10] = (1 - (xx + yy)) * sz;
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
+ 
+-  //Object list is empty initially
+-  var objects         = []
+-  var pickBufferIds   = []
+-  var pickBufferCount = []
+-  var pickBuffers     = []
++    return out;
++};
+ 
+-  //Dirty flag, skip redraw if scene static
+-  var dirty       = true
+-  var pickDirty   = true
++/**
++ * Creates a matrix from a quaternion rotation, vector translation and vector scale, rotating and scaling around the given origin
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     mat4.translate(dest, origin);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *     mat4.scale(dest, scale)
++ *     mat4.translate(dest, negativeOrigin);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @param {vec3} s Scaling vector
++ * @param {vec3} o The origin vector around which to scale and rotate
++ * @returns {mat4} out
++ */
++mat4.fromRotationTranslationScaleOrigin = function (out, q, v, s, o) {
++  // Quaternion math
++  var x = q[0], y = q[1], z = q[2], w = q[3],
++      x2 = x + x,
++      y2 = y + y,
++      z2 = z + z,
+ 
+-  var projection     = new Array(16)
+-  var model          = new Array(16)
++      xx = x * x2,
++      xy = x * y2,
++      xz = x * z2,
++      yy = y * y2,
++      yz = y * z2,
++      zz = z * z2,
++      wx = w * x2,
++      wy = w * y2,
++      wz = w * z2,
+ 
+-  var cameraParams = {
+-    view:         null,
+-    projection:   projection,
+-    model:        model
+-  }
++      sx = s[0],
++      sy = s[1],
++      sz = s[2],
+ 
+-  var pickDirty = true
++      ox = o[0],
++      oy = o[1],
++      oz = o[2];
+ 
+-  var viewShape = [ gl.drawingBufferWidth, gl.drawingBufferHeight ]
++  out[0] = (1 - (yy + zz)) * sx;
++  out[1] = (xy + wz) * sx;
++  out[2] = (xz - wy) * sx;
++  out[3] = 0;
++  out[4] = (xy - wz) * sy;
++  out[5] = (1 - (xx + zz)) * sy;
++  out[6] = (yz + wx) * sy;
++  out[7] = 0;
++  out[8] = (xz + wy) * sz;
++  out[9] = (yz - wx) * sz;
++  out[10] = (1 - (xx + yy)) * sz;
++  out[11] = 0;
++  out[12] = v[0] + ox - (out[0] * ox + out[4] * oy + out[8] * oz);
++  out[13] = v[1] + oy - (out[1] * ox + out[5] * oy + out[9] * oz);
++  out[14] = v[2] + oz - (out[2] * ox + out[6] * oy + out[10] * oz);
++  out[15] = 1;
+ 
+-  //Create scene object
+-  var scene = {
+-    gl:           gl,
+-    contextLost:  false,
+-    pixelRatio:   options.pixelRatio || parseFloat(window.devicePixelRatio),
+-    canvas:       canvas,
+-    selection:    selection,
+-    camera:       createCamera(canvas, cameraOptions),
+-    axes:         axes,
+-    axesPixels:   null,
+-    spikes:       spikes,
+-    bounds:       bounds,
+-    objects:      objects,
+-    shape:        viewShape,
+-    aspect:       options.aspectRatio || [1,1,1],
+-    pickRadius:   options.pickRadius || 10,
+-    zNear:        options.zNear || 0.01,
+-    zFar:         options.zFar  || 1000,
+-    fovy:         options.fovy  || Math.PI/4,
+-    clearColor:   options.clearColor || [0,0,0,0],
+-    autoResize:   defaultBool(options.autoResize),
+-    autoBounds:   defaultBool(options.autoBounds),
+-    autoScale:    !!options.autoScale,
+-    autoCenter:   defaultBool(options.autoCenter),
+-    clipToBounds: defaultBool(options.clipToBounds),
+-    snapToData:   !!options.snapToData,
+-    onselect:     options.onselect || null,
+-    onrender:     options.onrender || null,
+-    onclick:      options.onclick  || null,
+-    cameraParams: cameraParams,
+-    oncontextloss: null,
+-    mouseListener: null
+-  }
++  return out;
++};
+ 
+-  var pickShape = [ (gl.drawingBufferWidth/scene.pixelRatio)|0, (gl.drawingBufferHeight/scene.pixelRatio)|0 ]
++/**
++ * Calculates a 4x4 matrix from the given quaternion
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat} q Quaternion to create matrix from
++ *
++ * @returns {mat4} out
++ */
++mat4.fromQuat = function (out, q) {
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-  function resizeListener() {
+-    if(stopped) {
+-      return
+-    }
+-    if(!scene.autoResize) {
+-      return
+-    }
+-    var parent = canvas.parentNode
+-    var width  = 1
+-    var height = 1
+-    if(parent && parent !== document.body) {
+-      width  = parent.clientWidth
+-      height = parent.clientHeight
+-    } else {
+-      width  = window.innerWidth
+-      height = window.innerHeight
+-    }
+-    var nextWidth  = Math.ceil(width  * scene.pixelRatio)|0
+-    var nextHeight = Math.ceil(height * scene.pixelRatio)|0
+-    if(nextWidth !== canvas.width || nextHeight !== canvas.height) {
+-      canvas.width   = nextWidth
+-      canvas.height  = nextHeight
+-      var style = canvas.style
+-      style.position = style.position || 'absolute'
+-      style.left     = '0px'
+-      style.top      = '0px'
+-      style.width    = width  + 'px'
+-      style.height   = height + 'px'
+-      dirty = true
+-    }
+-  }
+-  if(scene.autoResize) {
+-    resizeListener()
+-  }
+-  window.addEventListener('resize', resizeListener)
++        xx = x * x2,
++        yx = y * x2,
++        yy = y * y2,
++        zx = z * x2,
++        zy = z * y2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-  function reallocPickIds() {
+-    var numObjs = objects.length
+-    var numPick = pickBuffers.length
+-    for(var i=0; i<numPick; ++i) {
+-      pickBufferCount[i] = 0
+-    }
+-    obj_loop:
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
+-      var pickCount = obj.pickSlots
+-      if(!pickCount) {
+-        pickBufferIds[i] = -1
+-        continue
+-      }
+-      for(var j=0; j<numPick; ++j) {
+-        if(pickBufferCount[j] + pickCount < 255) {
+-          pickBufferIds[i] = j
+-          obj.setPickBase(pickBufferCount[j]+1)
+-          pickBufferCount[j] += pickCount
+-          continue obj_loop
+-        }
+-      }
+-      //Create new pick buffer
+-      var nbuffer = createSelect(gl, viewShape)
+-      pickBufferIds[i] = numPick
+-      pickBuffers.push(nbuffer)
+-      pickBufferCount.push(pickCount)
+-      obj.setPickBase(1)
+-      numPick += 1
+-    }
+-    while(numPick > 0 && pickBufferCount[numPick-1] === 0) {
+-      pickBufferCount.pop()
+-      pickBuffers.pop().dispose()
+-    }
+-  }
++    out[0] = 1 - yy - zz;
++    out[1] = yx + wz;
++    out[2] = zx - wy;
++    out[3] = 0;
++
++    out[4] = yx - wz;
++    out[5] = 1 - xx - zz;
++    out[6] = zy + wx;
++    out[7] = 0;
+ 
+-  scene.update = function(options) {
+-    if(stopped) {
+-      return
+-    }
+-    options = options || {}
+-    dirty = true
+-    pickDirty = true
+-  }
++    out[8] = zx + wy;
++    out[9] = zy - wx;
++    out[10] = 1 - xx - yy;
++    out[11] = 0;
+ 
+-  scene.add = function(obj) {
+-    if(stopped) {
+-      return
+-    }
+-    obj.axes = axes
+-    objects.push(obj)
+-    pickBufferIds.push(-1)
+-    dirty = true
+-    pickDirty = true
+-    reallocPickIds()
+-  }
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
+ 
+-  scene.remove = function(obj) {
+-    if(stopped) {
+-      return
+-    }
+-    var idx = objects.indexOf(obj)
+-    if(idx < 0) {
+-      return
+-    }
+-    objects.splice(idx, 1)
+-    pickBufferIds.pop()
+-    dirty = true
+-    pickDirty = true
+-    reallocPickIds()
+-  }
++    return out;
++};
+ 
+-  scene.dispose = function() {
+-    if(stopped) {
+-      return
+-    }
++/**
++ * Generates a frustum matrix with the given bounds
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {Number} left Left bound of the frustum
++ * @param {Number} right Right bound of the frustum
++ * @param {Number} bottom Bottom bound of the frustum
++ * @param {Number} top Top bound of the frustum
++ * @param {Number} near Near bound of the frustum
++ * @param {Number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.frustum = function (out, left, right, bottom, top, near, far) {
++    var rl = 1 / (right - left),
++        tb = 1 / (top - bottom),
++        nf = 1 / (near - far);
++    out[0] = (near * 2) * rl;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = (near * 2) * tb;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = (right + left) * rl;
++    out[9] = (top + bottom) * tb;
++    out[10] = (far + near) * nf;
++    out[11] = -1;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = (far * near * 2) * nf;
++    out[15] = 0;
++    return out;
++};
+ 
+-    stopped = true
++/**
++ * Generates a perspective projection matrix with the given bounds
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {number} fovy Vertical field of view in radians
++ * @param {number} aspect Aspect ratio. typically viewport width/height
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.perspective = function (out, fovy, aspect, near, far) {
++    var f = 1.0 / Math.tan(fovy / 2),
++        nf = 1 / (near - far);
++    out[0] = f / aspect;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = f;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = (far + near) * nf;
++    out[11] = -1;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = (2 * far * near) * nf;
++    out[15] = 0;
++    return out;
++};
+ 
+-    window.removeEventListener('resize', resizeListener)
+-    canvas.removeEventListener('webglcontextlost', checkContextLoss)
+-    scene.mouseListener.enabled = false
++/**
++ * Generates a perspective projection matrix with the given field of view.
++ * This is primarily useful for generating projection matrices to be used
++ * with the still experiemental WebVR API.
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {Object} fov Object containing the following values: upDegrees, downDegrees, leftDegrees, rightDegrees
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.perspectiveFromFieldOfView = function (out, fov, near, far) {
++    var upTan = Math.tan(fov.upDegrees * Math.PI/180.0),
++        downTan = Math.tan(fov.downDegrees * Math.PI/180.0),
++        leftTan = Math.tan(fov.leftDegrees * Math.PI/180.0),
++        rightTan = Math.tan(fov.rightDegrees * Math.PI/180.0),
++        xScale = 2.0 / (leftTan + rightTan),
++        yScale = 2.0 / (upTan + downTan);
+ 
+-    if(scene.contextLost) {
+-      return
+-    }
++    out[0] = xScale;
++    out[1] = 0.0;
++    out[2] = 0.0;
++    out[3] = 0.0;
++    out[4] = 0.0;
++    out[5] = yScale;
++    out[6] = 0.0;
++    out[7] = 0.0;
++    out[8] = -((leftTan - rightTan) * xScale * 0.5);
++    out[9] = ((upTan - downTan) * yScale * 0.5);
++    out[10] = far / (near - far);
++    out[11] = -1.0;
++    out[12] = 0.0;
++    out[13] = 0.0;
++    out[14] = (far * near) / (near - far);
++    out[15] = 0.0;
++    return out;
++}
+ 
+-    //Destroy objects
+-    axes.dispose()
+-    spikes.dispose()
+-    for(var i=0; i<objects.length; ++i) {
+-      objects[i].dispose()
+-    }
++/**
++ * Generates a orthogonal projection matrix with the given bounds
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {number} left Left bound of the frustum
++ * @param {number} right Right bound of the frustum
++ * @param {number} bottom Bottom bound of the frustum
++ * @param {number} top Top bound of the frustum
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.ortho = function (out, left, right, bottom, top, near, far) {
++    var lr = 1 / (left - right),
++        bt = 1 / (bottom - top),
++        nf = 1 / (near - far);
++    out[0] = -2 * lr;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = -2 * bt;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 2 * nf;
++    out[11] = 0;
++    out[12] = (left + right) * lr;
++    out[13] = (top + bottom) * bt;
++    out[14] = (far + near) * nf;
++    out[15] = 1;
++    return out;
++};
+ 
+-    //Clean up buffers
+-    accumBuffer.dispose()
+-    for(var i=0; i<pickBuffers.length; ++i) {
+-      pickBuffers[i].dispose()
++/**
++ * Generates a look-at matrix with the given eye position, focal point, and up axis
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {vec3} eye Position of the viewer
++ * @param {vec3} center Point the viewer is looking at
++ * @param {vec3} up vec3 pointing up
++ * @returns {mat4} out
++ */
++mat4.lookAt = function (out, eye, center, up) {
++    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
++        eyex = eye[0],
++        eyey = eye[1],
++        eyez = eye[2],
++        upx = up[0],
++        upy = up[1],
++        upz = up[2],
++        centerx = center[0],
++        centery = center[1],
++        centerz = center[2];
++
++    if (Math.abs(eyex - centerx) < glMatrix.EPSILON &&
++        Math.abs(eyey - centery) < glMatrix.EPSILON &&
++        Math.abs(eyez - centerz) < glMatrix.EPSILON) {
++        return mat4.identity(out);
+     }
+ 
+-    //Clean up shaders
+-    accumShader.dispose()
++    z0 = eyex - centerx;
++    z1 = eyey - centery;
++    z2 = eyez - centerz;
+ 
+-    //Release all references
+-    gl = null
+-    axes = null
+-    spikes = null
+-    objects = []
+-  }
++    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
++    z0 *= len;
++    z1 *= len;
++    z2 *= len;
+ 
+-  //Update mouse position
+-  var mouseRotating = false
++    x0 = upy * z2 - upz * z1;
++    x1 = upz * z0 - upx * z2;
++    x2 = upx * z1 - upy * z0;
++    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
++    if (!len) {
++        x0 = 0;
++        x1 = 0;
++        x2 = 0;
++    } else {
++        len = 1 / len;
++        x0 *= len;
++        x1 *= len;
++        x2 *= len;
++    }
+ 
+-  var prevButtons = 0
++    y0 = z1 * x2 - z2 * x1;
++    y1 = z2 * x0 - z0 * x2;
++    y2 = z0 * x1 - z1 * x0;
+ 
+-  scene.mouseListener = mouseChange(canvas, function(buttons, x, y) {
+-    if(stopped) {
+-      return
++    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
++    if (!len) {
++        y0 = 0;
++        y1 = 0;
++        y2 = 0;
++    } else {
++        len = 1 / len;
++        y0 *= len;
++        y1 *= len;
++        y2 *= len;
+     }
+ 
+-    var numPick = pickBuffers.length
+-    var numObjs = objects.length
+-    var prevObj = selection.object
++    out[0] = x0;
++    out[1] = y0;
++    out[2] = z0;
++    out[3] = 0;
++    out[4] = x1;
++    out[5] = y1;
++    out[6] = z1;
++    out[7] = 0;
++    out[8] = x2;
++    out[9] = y2;
++    out[10] = z2;
++    out[11] = 0;
++    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
++    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
++    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
++    out[15] = 1;
+ 
+-    selection.distance = Infinity
+-    selection.mouse[0] = x
+-    selection.mouse[1] = y
+-    selection.object = null
+-    selection.screen = null
+-    selection.dataCoordinate = selection.dataPosition = null
++    return out;
++};
+ 
+-    var change = false
++/**
++ * Returns a string representation of a mat4
++ *
++ * @param {mat4} mat matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat4.str = function (a) {
++    return 'mat4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ', ' +
++                    a[4] + ', ' + a[5] + ', ' + a[6] + ', ' + a[7] + ', ' +
++                    a[8] + ', ' + a[9] + ', ' + a[10] + ', ' + a[11] + ', ' +
++                    a[12] + ', ' + a[13] + ', ' + a[14] + ', ' + a[15] + ')';
++};
+ 
+-    if(buttons && prevButtons) {
+-      mouseRotating = true
+-    } else {
+-      if(mouseRotating) {
+-        pickDirty = true
+-      }
+-      mouseRotating = false
++/**
++ * Returns Frobenius norm of a mat4
++ *
++ * @param {mat4} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
++ */
++mat4.frob = function (a) {
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2) + Math.pow(a[9], 2) + Math.pow(a[10], 2) + Math.pow(a[11], 2) + Math.pow(a[12], 2) + Math.pow(a[13], 2) + Math.pow(a[14], 2) + Math.pow(a[15], 2) ))
++};
+ 
+-      for(var i=0; i<numPick; ++i) {
+-        var result = pickBuffers[i].query(x, pickShape[1] - y - 1, scene.pickRadius)
+-        if(result) {
+-          if(result.distance > selection.distance) {
+-            continue
+-          }
+-          for(var j=0; j<numObjs; ++j) {
+-            var obj = objects[j]
+-            if(pickBufferIds[j] !== i) {
+-              continue
+-            }
+-            var objPick = obj.pick(result)
+-            if(objPick) {
+-              selection.buttons        = buttons
+-              selection.screen         = result.coord
+-              selection.distance       = result.distance
+-              selection.object         = obj
+-              selection.index          = objPick.distance
+-              selection.dataPosition   = objPick.position
+-              selection.dataCoordinate = objPick.dataCoordinate
+-              selection.data           = objPick
+-              change = true
+-            }
+-          }
+-        }
+-      }
+-    }
++/**
++ * Adds two mat4's
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++mat4.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    out[4] = a[4] + b[4];
++    out[5] = a[5] + b[5];
++    out[6] = a[6] + b[6];
++    out[7] = a[7] + b[7];
++    out[8] = a[8] + b[8];
++    out[9] = a[9] + b[9];
++    out[10] = a[10] + b[10];
++    out[11] = a[11] + b[11];
++    out[12] = a[12] + b[12];
++    out[13] = a[13] + b[13];
++    out[14] = a[14] + b[14];
++    out[15] = a[15] + b[15];
++    return out;
++};
+ 
+-    if(prevObj && prevObj !== selection.object) {
+-      if(prevObj.highlight) {
+-        prevObj.highlight(null)
+-      }
+-      dirty = true
+-    }
+-    if(selection.object) {
+-      if(selection.object.highlight) {
+-        selection.object.highlight(selection.data)
+-      }
+-      dirty = true
+-    }
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++mat4.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    out[4] = a[4] - b[4];
++    out[5] = a[5] - b[5];
++    out[6] = a[6] - b[6];
++    out[7] = a[7] - b[7];
++    out[8] = a[8] - b[8];
++    out[9] = a[9] - b[9];
++    out[10] = a[10] - b[10];
++    out[11] = a[11] - b[11];
++    out[12] = a[12] - b[12];
++    out[13] = a[13] - b[13];
++    out[14] = a[14] - b[14];
++    out[15] = a[15] - b[15];
++    return out;
++};
+ 
+-    change = change || (selection.object !== prevObj)
+-    if(change && scene.onselect) {
+-      scene.onselect(selection)
+-    }
++/**
++ * Alias for {@link mat4.subtract}
++ * @function
++ */
++mat4.sub = mat4.subtract;
+ 
+-    if((buttons & 1) && !(prevButtons & 1) && scene.onclick) {
+-      scene.onclick(selection)
+-    }
+-    prevButtons = buttons
+-  })
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat4} out
++ */
++mat4.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    out[4] = a[4] * b;
++    out[5] = a[5] * b;
++    out[6] = a[6] * b;
++    out[7] = a[7] * b;
++    out[8] = a[8] * b;
++    out[9] = a[9] * b;
++    out[10] = a[10] * b;
++    out[11] = a[11] * b;
++    out[12] = a[12] * b;
++    out[13] = a[13] * b;
++    out[14] = a[14] * b;
++    out[15] = a[15] * b;
++    return out;
++};
+ 
+-  function checkContextLoss() {
+-    if(scene.contextLost) {
+-      return true
+-    }
+-    if(gl.isContextLost()) {
+-      scene.contextLost = true
+-      scene.mouseListener.enabled = false
+-      scene.selection.object = null
+-      if(scene.oncontextloss) {
+-        scene.oncontextloss()
+-      }
+-    }
+-  }
++/**
++ * Adds two mat4's after multiplying each element of the second operand by a scalar value.
++ *
++ * @param {mat4} out the receiving vector
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat4} out
++ */
++mat4.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    out[4] = a[4] + (b[4] * scale);
++    out[5] = a[5] + (b[5] * scale);
++    out[6] = a[6] + (b[6] * scale);
++    out[7] = a[7] + (b[7] * scale);
++    out[8] = a[8] + (b[8] * scale);
++    out[9] = a[9] + (b[9] * scale);
++    out[10] = a[10] + (b[10] * scale);
++    out[11] = a[11] + (b[11] * scale);
++    out[12] = a[12] + (b[12] * scale);
++    out[13] = a[13] + (b[13] * scale);
++    out[14] = a[14] + (b[14] * scale);
++    out[15] = a[15] + (b[15] * scale);
++    return out;
++};
++
++/**
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {mat4} a The first matrix.
++ * @param {mat4} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat4.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && 
++           a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && 
++           a[8] === b[8] && a[9] === b[9] && a[10] === b[10] && a[11] === b[11] &&
++           a[12] === b[12] && a[13] === b[13] && a[14] === b[14] && a[15] === b[15];
++};
+ 
+-  canvas.addEventListener('webglcontextlost', checkContextLoss)
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat4} a The first matrix.
++ * @param {mat4} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat4.equals = function (a, b) {
++    var a0  = a[0],  a1  = a[1],  a2  = a[2],  a3  = a[3],
++        a4  = a[4],  a5  = a[5],  a6  = a[6],  a7  = a[7], 
++        a8  = a[8],  a9  = a[9],  a10 = a[10], a11 = a[11], 
++        a12 = a[12], a13 = a[13], a14 = a[14], a15 = a[15];
+ 
+-  //Render the scene for mouse picking
+-  function renderPick() {
+-    if(checkContextLoss()) {
+-      return
+-    }
++    var b0  = b[0],  b1  = b[1],  b2  = b[2],  b3  = b[3],
++        b4  = b[4],  b5  = b[5],  b6  = b[6],  b7  = b[7], 
++        b8  = b[8],  b9  = b[9],  b10 = b[10], b11 = b[11], 
++        b12 = b[12], b13 = b[13], b14 = b[14], b15 = b[15];
+ 
+-    gl.colorMask(true, true, true, true)
+-    gl.depthMask(true)
+-    gl.disable(gl.BLEND)
+-    gl.enable(gl.DEPTH_TEST)
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
++            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
++            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
++            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
++            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
++            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)) &&
++            Math.abs(a9 - b9) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a9), Math.abs(b9)) &&
++            Math.abs(a10 - b10) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a10), Math.abs(b10)) &&
++            Math.abs(a11 - b11) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a11), Math.abs(b11)) &&
++            Math.abs(a12 - b12) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a12), Math.abs(b12)) &&
++            Math.abs(a13 - b13) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a13), Math.abs(b13)) &&
++            Math.abs(a14 - b14) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a14), Math.abs(b14)) &&
++            Math.abs(a15 - b15) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a15), Math.abs(b15)));
++};
+ 
+-    var numObjs = objects.length
+-    var numPick = pickBuffers.length
+-    for(var j=0; j<numPick; ++j) {
+-      var buf = pickBuffers[j]
+-      buf.shape = pickShape
+-      buf.begin()
+-      for(var i=0; i<numObjs; ++i) {
+-        if(pickBufferIds[i] !== j) {
+-          continue
+-        }
+-        var obj = objects[i]
+-        if(obj.drawPick) {
+-          obj.pixelRatio = 1
+-          obj.drawPick(cameraParams)
+-        }
+-      }
+-      buf.end()
+-    }
+-  }
+ 
+-  var nBounds = [
+-    [ Infinity, Infinity, Infinity],
+-    [-Infinity,-Infinity,-Infinity]]
+ 
+-  var prevBounds = [nBounds[0].slice(), nBounds[1].slice()]
++module.exports = mat4;
+ 
+-  function redraw() {
+-    if(checkContextLoss()) {
+-      return
+-    }
++},{"./common.js":155}],160:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-    resizeListener()
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-    //Tick camera
+-    var cameraMoved = scene.camera.tick()
+-    cameraParams.view = scene.camera.matrix
+-    dirty     = dirty || cameraMoved
+-    pickDirty = pickDirty || cameraMoved
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-      //Set pixel ratio
+-    axes.pixelRatio   = scene.pixelRatio
+-    spikes.pixelRatio = scene.pixelRatio
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-    //Check if any objects changed, recalculate bounds
+-    var numObjs = objects.length
+-    var lo = nBounds[0]
+-    var hi = nBounds[1]
+-    lo[0] = lo[1] = lo[2] =  Infinity
+-    hi[0] = hi[1] = hi[2] = -Infinity
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
++var glMatrix = require("./common.js");
++var mat3 = require("./mat3.js");
++var vec3 = require("./vec3.js");
++var vec4 = require("./vec4.js");
+ 
+-      //Set the axes properties for each object
+-      obj.pixelRatio = scene.pixelRatio
+-      obj.axes = scene.axes
++/**
++ * @class Quaternion
++ * @name quat
++ */
++var quat = {};
+ 
+-      dirty = dirty || !!obj.dirty
+-      pickDirty = pickDirty || !!obj.dirty
+-      var obb = obj.bounds
+-      if(obb) {
+-        var olo = obb[0]
+-        var ohi = obb[1]
+-        for(var j=0; j<3; ++j) {
+-          lo[j] = Math.min(lo[j], olo[j])
+-          hi[j] = Math.max(hi[j], ohi[j])
+-        }
+-      }
+-    }
++/**
++ * Creates a new identity quat
++ *
++ * @returns {quat} a new quaternion
++ */
++quat.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
++};
+ 
+-    //Recalculate bounds
+-    var bounds = scene.bounds
+-    if(scene.autoBounds) {
+-      for(var j=0; j<3; ++j) {
+-        if(hi[j] < lo[j]) {
+-          lo[j] = -1
+-          hi[j] = 1
++/**
++ * Sets a quaternion to represent the shortest rotation from one
++ * vector to another.
++ *
++ * Both vectors are assumed to be unit length.
++ *
++ * @param {quat} out the receiving quaternion.
++ * @param {vec3} a the initial vector
++ * @param {vec3} b the destination vector
++ * @returns {quat} out
++ */
++quat.rotationTo = (function() {
++    var tmpvec3 = vec3.create();
++    var xUnitVec3 = vec3.fromValues(1,0,0);
++    var yUnitVec3 = vec3.fromValues(0,1,0);
++
++    return function(out, a, b) {
++        var dot = vec3.dot(a, b);
++        if (dot < -0.999999) {
++            vec3.cross(tmpvec3, xUnitVec3, a);
++            if (vec3.length(tmpvec3) < 0.000001)
++                vec3.cross(tmpvec3, yUnitVec3, a);
++            vec3.normalize(tmpvec3, tmpvec3);
++            quat.setAxisAngle(out, tmpvec3, Math.PI);
++            return out;
++        } else if (dot > 0.999999) {
++            out[0] = 0;
++            out[1] = 0;
++            out[2] = 0;
++            out[3] = 1;
++            return out;
+         } else {
+-          if(lo[j] === hi[j]) {
+-            lo[j] -= 1
+-            hi[j] += 1
+-          }
+-          var padding = 0.05 * (hi[j] - lo[j])
+-          lo[j] = lo[j] - padding
+-          hi[j] = hi[j] + padding
++            vec3.cross(tmpvec3, a, b);
++            out[0] = tmpvec3[0];
++            out[1] = tmpvec3[1];
++            out[2] = tmpvec3[2];
++            out[3] = 1 + dot;
++            return quat.normalize(out, out);
+         }
+-        bounds[0][j] = lo[j]
+-        bounds[1][j] = hi[j]
+-      }
+-    }
++    };
++})();
+ 
+-    var boundsChanged = false
+-    for(var j=0; j<3; ++j) {
+-        boundsChanged = boundsChanged ||
+-            (prevBounds[0][j] !== bounds[0][j])  ||
+-            (prevBounds[1][j] !== bounds[1][j])
+-        prevBounds[0][j] = bounds[0][j]
+-        prevBounds[1][j] = bounds[1][j]
+-    }
++/**
++ * Sets the specified quaternion with values corresponding to the given
++ * axes. Each axis is a vec3 and is expected to be unit length and
++ * perpendicular to all other specified axes.
++ *
++ * @param {vec3} view  the vector representing the viewing direction
++ * @param {vec3} right the vector representing the local "right" direction
++ * @param {vec3} up    the vector representing the local "up" direction
++ * @returns {quat} out
++ */
++quat.setAxes = (function() {
++    var matr = mat3.create();
+ 
+-    if(boundsChanged) {
+-      var tickSpacing = [0,0,0]
+-      for(var i=0; i<3; ++i) {
+-        tickSpacing[i] = roundUpPow10((bounds[1][i]-bounds[0][i]) / 10.0)
+-      }
+-      if(axes.autoTicks) {
+-        axes.update({
+-          bounds: bounds,
+-          tickSpacing: tickSpacing
+-        })
+-      } else {
+-        axes.update({
+-          bounds: bounds
+-        })
+-      }
+-    }
++    return function(out, view, right, up) {
++        matr[0] = right[0];
++        matr[3] = right[1];
++        matr[6] = right[2];
+ 
+-    //Recalculate bounds
+-    pickDirty = pickDirty || boundsChanged
+-    dirty = dirty || boundsChanged
++        matr[1] = up[0];
++        matr[4] = up[1];
++        matr[7] = up[2];
+ 
+-    //Get scene
+-    var width  = gl.drawingBufferWidth
+-    var height = gl.drawingBufferHeight
+-    viewShape[0] = width
+-    viewShape[1] = height
+-    pickShape[0] = Math.max(width/scene.pixelRatio, 1)|0
+-    pickShape[1] = Math.max(height/scene.pixelRatio, 1)|0
++        matr[2] = -view[0];
++        matr[5] = -view[1];
++        matr[8] = -view[2];
+ 
+-    //Compute camera parameters
+-    perspective(projection,
+-      scene.fovy,
+-      width/height,
+-      scene.zNear,
+-      scene.zFar)
++        return quat.normalize(out, quat.fromMat3(out, matr));
++    };
++})();
+ 
+-    //Compute model matrix
+-    for(var i=0; i<16; ++i) {
+-      model[i] = 0
+-    }
+-    model[15] = 1
++/**
++ * Creates a new quat initialized with values from an existing quaternion
++ *
++ * @param {quat} a quaternion to clone
++ * @returns {quat} a new quaternion
++ * @function
++ */
++quat.clone = vec4.clone;
+ 
+-    var maxS = 0
+-    for(var i=0; i<3; ++i) {
+-      maxS = Math.max(maxS, bounds[1][i] - bounds[0][i])
+-    }
++/**
++ * Creates a new quat initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {quat} a new quaternion
++ * @function
++ */
++quat.fromValues = vec4.fromValues;
+ 
+-    for(var i=0; i<3; ++i) {
+-      if(scene.autoScale) {
+-        model[5*i] = scene.aspect[i] / (bounds[1][i] - bounds[0][i])
+-      } else {
+-        model[5*i] = 1  / maxS
+-      }
+-      if(scene.autoCenter) {
+-        model[12+i] = -model[5*i] * 0.5 * (bounds[0][i] + bounds[1][i])
+-      }
+-    }
++/**
++ * Copy the values from one quat to another
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the source quaternion
++ * @returns {quat} out
++ * @function
++ */
++quat.copy = vec4.copy;
+ 
+-    //Apply axes/clip bounds
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
++/**
++ * Set the components of a quat to the given values
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {quat} out
++ * @function
++ */
++quat.set = vec4.set;
+ 
+-      //Set axes bounds
+-      obj.axesBounds = bounds
++/**
++ * Set a quat to the identity quaternion
++ *
++ * @param {quat} out the receiving quaternion
++ * @returns {quat} out
++ */
++quat.identity = function(out) {
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
++};
+ 
+-      //Set clip bounds
+-      if(scene.clipToBounds) {
+-        obj.clipBounds = bounds
+-      }
+-    }
++/**
++ * Sets a quat from the given angle and rotation axis,
++ * then returns it.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {vec3} axis the axis around which to rotate
++ * @param {Number} rad the angle in radians
++ * @returns {quat} out
++ **/
++quat.setAxisAngle = function(out, axis, rad) {
++    rad = rad * 0.5;
++    var s = Math.sin(rad);
++    out[0] = s * axis[0];
++    out[1] = s * axis[1];
++    out[2] = s * axis[2];
++    out[3] = Math.cos(rad);
++    return out;
++};
+ 
+-    //Set spike parameters
+-    if(selection.object) {
+-      if(scene.snapToData) {
+-        spikes.position = selection.dataCoordinate
+-      } else {
+-        spikes.position = selection.dataPosition
+-      }
+-      spikes.bounds = bounds
++/**
++ * Gets the rotation axis and angle for a given
++ *  quaternion. If a quaternion is created with
++ *  setAxisAngle, this method will return the same
++ *  values as providied in the original parameter list
++ *  OR functionally equivalent values.
++ * Example: The quaternion formed by axis [0, 0, 1] and
++ *  angle -90 is the same as the quaternion formed by
++ *  [0, 0, 1] and 270. This method favors the latter.
++ * @param  {vec3} out_axis  Vector receiving the axis of rotation
++ * @param  {quat} q     Quaternion to be decomposed
++ * @return {Number}     Angle, in radians, of the rotation
++ */
++quat.getAxisAngle = function(out_axis, q) {
++    var rad = Math.acos(q[3]) * 2.0;
++    var s = Math.sin(rad / 2.0);
++    if (s != 0.0) {
++        out_axis[0] = q[0] / s;
++        out_axis[1] = q[1] / s;
++        out_axis[2] = q[2] / s;
++    } else {
++        // If s is zero, return any axis (no rotation - axis does not matter)
++        out_axis[0] = 1;
++        out_axis[1] = 0;
++        out_axis[2] = 0;
+     }
++    return rad;
++};
+ 
+-    //If state changed, then redraw pick buffers
+-    if(pickDirty) {
+-      pickDirty = false
+-      renderPick()
+-    }
++/**
++ * Adds two quat's
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @returns {quat} out
++ * @function
++ */
++quat.add = vec4.add;
+ 
+-    if(!dirty) {
+-      return
+-    }
++/**
++ * Multiplies two quat's
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @returns {quat} out
++ */
++quat.multiply = function(out, a, b) {
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bx = b[0], by = b[1], bz = b[2], bw = b[3];
+ 
+-    //Recalculate pixel data
+-    scene.axesPixels = axesRanges(scene.axes, cameraParams, width, height)
++    out[0] = ax * bw + aw * bx + ay * bz - az * by;
++    out[1] = ay * bw + aw * by + az * bx - ax * bz;
++    out[2] = az * bw + aw * bz + ax * by - ay * bx;
++    out[3] = aw * bw - ax * bx - ay * by - az * bz;
++    return out;
++};
+ 
+-    //Call render callback
+-    if(scene.onrender) {
+-      scene.onrender()
+-    }
++/**
++ * Alias for {@link quat.multiply}
++ * @function
++ */
++quat.mul = quat.multiply;
+ 
+-    //Read value
+-    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-    gl.viewport(0, 0, width, height)
++/**
++ * Scales a quat by a scalar number
++ *
++ * @param {quat} out the receiving vector
++ * @param {quat} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {quat} out
++ * @function
++ */
++quat.scale = vec4.scale;
+ 
+-    //General strategy: 3 steps
+-    //  1. render non-transparent objects
+-    //  2. accumulate transparent objects into separate fbo
+-    //  3. composite final scene
++/**
++ * Rotates a quaternion by the given angle about the X axis
++ *
++ * @param {quat} out quat receiving operation result
++ * @param {quat} a quat to rotate
++ * @param {number} rad angle (in radians) to rotate
++ * @returns {quat} out
++ */
++quat.rotateX = function (out, a, rad) {
++    rad *= 0.5; 
+ 
+-    //Clear FBO
+-    var clearColor = scene.clearColor
+-    gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3])
+-    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+-    gl.depthMask(true)
+-    gl.colorMask(true, true, true, true)
+-    gl.enable(gl.DEPTH_TEST)
+-    gl.depthFunc(gl.LEQUAL)
+-    gl.disable(gl.BLEND)
+-    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bx = Math.sin(rad), bw = Math.cos(rad);
++
++    out[0] = ax * bw + aw * bx;
++    out[1] = ay * bw + az * bx;
++    out[2] = az * bw - ay * bx;
++    out[3] = aw * bw - ax * bx;
++    return out;
++};
++
++/**
++ * Rotates a quaternion by the given angle about the Y axis
++ *
++ * @param {quat} out quat receiving operation result
++ * @param {quat} a quat to rotate
++ * @param {number} rad angle (in radians) to rotate
++ * @returns {quat} out
++ */
++quat.rotateY = function (out, a, rad) {
++    rad *= 0.5; 
++
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        by = Math.sin(rad), bw = Math.cos(rad);
+ 
+-    //Render opaque pass
+-    var hasTransparent = false
+-    if(axes.enable) {
+-      hasTransparent = hasTransparent || axes.isTransparent()
+-      axes.draw(cameraParams)
+-    }
+-    spikes.axes = axes
+-    if(selection.object) {
+-      spikes.draw(cameraParams)
+-    }
++    out[0] = ax * bw - az * by;
++    out[1] = ay * bw + aw * by;
++    out[2] = az * bw + ax * by;
++    out[3] = aw * bw - ay * by;
++    return out;
++};
+ 
+-    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
++/**
++ * Rotates a quaternion by the given angle about the Z axis
++ *
++ * @param {quat} out quat receiving operation result
++ * @param {quat} a quat to rotate
++ * @param {number} rad angle (in radians) to rotate
++ * @returns {quat} out
++ */
++quat.rotateZ = function (out, a, rad) {
++    rad *= 0.5; 
+ 
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
+-      obj.axes = axes
+-      obj.pixelRatio = scene.pixelRatio
+-      if(obj.isOpaque && obj.isOpaque()) {
+-        obj.draw(cameraParams)
+-      }
+-      if(obj.isTransparent && obj.isTransparent()) {
+-        hasTransparent = true
+-      }
+-    }
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bz = Math.sin(rad), bw = Math.cos(rad);
+ 
+-    if(hasTransparent) {
+-      //Render transparent pass
+-      accumBuffer.shape = viewShape
+-      accumBuffer.bind()
+-      gl.clear(gl.DEPTH_BUFFER_BIT)
+-      gl.colorMask(false, false, false, false)
+-      gl.depthMask(true)
+-      gl.depthFunc(gl.LESS)
++    out[0] = ax * bw + ay * bz;
++    out[1] = ay * bw - ax * bz;
++    out[2] = az * bw + aw * bz;
++    out[3] = aw * bw - az * bz;
++    return out;
++};
+ 
+-      //Render forward facing objects
+-      if(axes.enable && axes.isTransparent()) {
+-        axes.drawTransparent(cameraParams)
+-      }
+-      for(var i=0; i<numObjs; ++i) {
+-        var obj = objects[i]
+-        if(obj.isOpaque && obj.isOpaque()) {
+-          obj.draw(cameraParams)
+-        }
+-      }
++/**
++ * Calculates the W component of a quat from the X, Y, and Z components.
++ * Assumes that quaternion is 1 unit in length.
++ * Any existing W component will be ignored.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quat to calculate W component of
++ * @returns {quat} out
++ */
++quat.calculateW = function (out, a) {
++    var x = a[0], y = a[1], z = a[2];
+ 
+-      //Render transparent pass
+-      gl.enable(gl.BLEND)
+-      gl.blendEquation(gl.FUNC_ADD)
+-      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
+-      gl.colorMask(true, true, true, true)
+-      gl.depthMask(false)
+-      gl.clearColor(0,0,0,0)
+-      gl.clear(gl.COLOR_BUFFER_BIT)
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    out[3] = Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));
++    return out;
++};
+ 
+-      if(axes.isTransparent()) {
+-        axes.drawTransparent(cameraParams)
+-      }
++/**
++ * Calculates the dot product of two quat's
++ *
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @returns {Number} dot product of a and b
++ * @function
++ */
++quat.dot = vec4.dot;
+ 
+-      for(var i=0; i<numObjs; ++i) {
+-        var obj = objects[i]
+-        if(obj.isTransparent && obj.isTransparent()) {
+-          obj.drawTransparent(cameraParams)
+-        }
+-      }
++/**
++ * Performs a linear interpolation between two quat's
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {quat} out
++ * @function
++ */
++quat.lerp = vec4.lerp;
+ 
+-      //Unbind framebuffer
+-      gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++/**
++ * Performs a spherical linear interpolation between two quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {quat} out
++ */
++quat.slerp = function (out, a, b, t) {
++    // benchmarks:
++    //    http://jsperf.com/quaternion-slerp-implementations
+ 
+-      //Draw composite pass
+-      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
+-      gl.disable(gl.DEPTH_TEST)
+-      accumShader.bind()
+-      accumBuffer.color[0].bind(0)
+-      accumShader.uniforms.accumBuffer = 0
+-      drawTriangle(gl)
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bx = b[0], by = b[1], bz = b[2], bw = b[3];
+ 
+-      //Turn off blending
+-      gl.disable(gl.BLEND)
+-    }
++    var        omega, cosom, sinom, scale0, scale1;
+ 
+-    //Clear dirty flags
+-    dirty = false
+-    for(var i=0; i<numObjs; ++i) {
+-      objects[i].dirty = false
++    // calc cosine
++    cosom = ax * bx + ay * by + az * bz + aw * bw;
++    // adjust signs (if necessary)
++    if ( cosom < 0.0 ) {
++        cosom = -cosom;
++        bx = - bx;
++        by = - by;
++        bz = - bz;
++        bw = - bw;
+     }
+-  }
++    // calculate coefficients
++    if ( (1.0 - cosom) > 0.000001 ) {
++        // standard case (slerp)
++        omega  = Math.acos(cosom);
++        sinom  = Math.sin(omega);
++        scale0 = Math.sin((1.0 - t) * omega) / sinom;
++        scale1 = Math.sin(t * omega) / sinom;
++    } else {        
++        // "from" and "to" quaternions are very close 
++        //  ... so we can do a linear interpolation
++        scale0 = 1.0 - t;
++        scale1 = t;
++    }
++    // calculate final values
++    out[0] = scale0 * ax + scale1 * bx;
++    out[1] = scale0 * ay + scale1 * by;
++    out[2] = scale0 * az + scale1 * bz;
++    out[3] = scale0 * aw + scale1 * bw;
++    
++    return out;
++};
+ 
++/**
++ * Performs a spherical linear interpolation with two control points
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {quat} c the third operand
++ * @param {quat} d the fourth operand
++ * @param {Number} t interpolation amount
++ * @returns {quat} out
++ */
++quat.sqlerp = (function () {
++  var temp1 = quat.create();
++  var temp2 = quat.create();
++  
++  return function (out, a, b, c, d, t) {
++    quat.slerp(temp1, a, d, t);
++    quat.slerp(temp2, b, c, t);
++    quat.slerp(out, temp1, temp2, 2 * t * (1 - t));
++    
++    return out;
++  };
++}());
+ 
+-  //Draw the whole scene
+-  function render() {
+-    if(stopped || scene.contextLost) {
+-      return
+-    }
+-    requestAnimationFrame(render)
+-    redraw()
+-  }
+-  render()
++/**
++ * Calculates the inverse of a quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quat to calculate inverse of
++ * @returns {quat} out
++ */
++quat.invert = function(out, a) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++        dot = a0*a0 + a1*a1 + a2*a2 + a3*a3,
++        invDot = dot ? 1.0/dot : 0;
++    
++    // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0
+ 
+-  //Force redraw of whole scene
+-  scene.redraw = function() {
+-    if(stopped) {
+-      return
+-    }
+-    dirty = true
+-    redraw()
+-  }
++    out[0] = -a0*invDot;
++    out[1] = -a1*invDot;
++    out[2] = -a2*invDot;
++    out[3] = a3*invDot;
++    return out;
++};
+ 
+-  return scene
+-}
++/**
++ * Calculates the conjugate of a quat
++ * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quat to calculate conjugate of
++ * @returns {quat} out
++ */
++quat.conjugate = function (out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-},{"./lib/shader":172,"3d-view-controls":173,"a-big-triangle":175,"gl-axes3d":176,"gl-axes3d/properties":186,"gl-fbo":129,"gl-mat4/perspective":146,"gl-select-static":202,"gl-spikes3d":188,"mouse-change":421}],190:[function(require,module,exports){
+-'use strict'
++/**
++ * Calculates the length of a quat
++ *
++ * @param {quat} a vector to calculate length of
++ * @returns {Number} length of a
++ * @function
++ */
++quat.length = vec4.length;
+ 
++/**
++ * Alias for {@link quat.length}
++ * @function
++ */
++quat.len = quat.length;
+ 
++/**
++ * Calculates the squared length of a quat
++ *
++ * @param {quat} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ * @function
++ */
++quat.squaredLength = vec4.squaredLength;
+ 
+-module.exports = {
+-  vertex:       "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  fragColor = color;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
+-  fragment:     "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
+-  pickVertex:   "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 id;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\nuniform vec4 pickOffset;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
+-  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"
+-}
++/**
++ * Alias for {@link quat.squaredLength}
++ * @function
++ */
++quat.sqrLen = quat.squaredLength;
+ 
+-},{}],191:[function(require,module,exports){
+-'use strict'
++/**
++ * Normalize a quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quaternion to normalize
++ * @returns {quat} out
++ * @function
++ */
++quat.normalize = vec4.normalize;
+ 
+-module.exports = createFancyScatter2D
++/**
++ * Creates a quaternion from the given 3x3 rotation matrix.
++ *
++ * NOTE: The resultant quaternion is not normalized, so you should be sure
++ * to renormalize the quaternion yourself where necessary.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {mat3} m rotation matrix
++ * @returns {quat} out
++ * @function
++ */
++quat.fromMat3 = function(out, m) {
++    // Algorithm in Ken Shoemake's article in 1987 SIGGRAPH course notes
++    // article "Quaternion Calculus and Fast Animation".
++    var fTrace = m[0] + m[4] + m[8];
++    var fRoot;
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var textCache = require('text-cache')
+-var pool = require('typedarray-pool')
+-var vectorizeText = require('vectorize-text')
+-var shaders = require('./lib/shaders')
++    if ( fTrace > 0.0 ) {
++        // |w| > 1/2, may as well choose w > 1/2
++        fRoot = Math.sqrt(fTrace + 1.0);  // 2w
++        out[3] = 0.5 * fRoot;
++        fRoot = 0.5/fRoot;  // 1/(4w)
++        out[0] = (m[5]-m[7])*fRoot;
++        out[1] = (m[6]-m[2])*fRoot;
++        out[2] = (m[1]-m[3])*fRoot;
++    } else {
++        // |w| <= 1/2
++        var i = 0;
++        if ( m[4] > m[0] )
++          i = 1;
++        if ( m[8] > m[i*3+i] )
++          i = 2;
++        var j = (i+1)%3;
++        var k = (i+2)%3;
++        
++        fRoot = Math.sqrt(m[i*3+i]-m[j*3+j]-m[k*3+k] + 1.0);
++        out[i] = 0.5 * fRoot;
++        fRoot = 0.5 / fRoot;
++        out[3] = (m[j*3+k] - m[k*3+j]) * fRoot;
++        out[j] = (m[j*3+i] + m[i*3+j]) * fRoot;
++        out[k] = (m[k*3+i] + m[i*3+k]) * fRoot;
++    }
++    
++    return out;
++};
+ 
+-var BOUNDARIES = {}
++/**
++ * Returns a string representation of a quatenion
++ *
++ * @param {quat} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++quat.str = function (a) {
++    return 'quat(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
++};
+ 
+-function getBoundary(glyph) {
+-  if(glyph in BOUNDARIES) {
+-    return BOUNDARIES[glyph]
+-  }
++/**
++ * Returns whether or not the quaternions have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {quat} a The first quaternion.
++ * @param {quat} b The second quaternion.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++quat.exactEquals = vec4.exactEquals;
+ 
+-  var polys = vectorizeText(glyph, {
+-    polygons: true,
+-    font: 'sans-serif',
+-    textAlign: 'left',
+-    textBaseline: 'alphabetic'
+-  })
++/**
++ * Returns whether or not the quaternions have approximately the same elements in the same position.
++ *
++ * @param {quat} a The first vector.
++ * @param {quat} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++quat.equals = vec4.equals;
+ 
+-  var coords  = []
+-  var normals = []
++module.exports = quat;
+ 
+-  polys.forEach(function(loops) {
+-    loops.forEach(function(loop) {
+-      for(var i=0; i<loop.length; ++i) {
+-        var a = loop[(i + loop.length - 1) % loop.length]
+-        var b = loop[i]
+-        var c = loop[(i + 1) % loop.length]
+-        var d = loop[(i + 2) % loop.length]
++},{"./common.js":155,"./mat3.js":158,"./vec3.js":162,"./vec4.js":163}],161:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-        var dx = b[0] - a[0]
+-        var dy = b[1] - a[1]
+-        var dl = Math.sqrt(dx*dx + dy*dy)
+-        dx /= dl
+-        dy /= dl
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-        coords.push(a[0], a[1] + 1.4)
+-        normals.push(dy, -dx)
+-        coords.push(a[0], a[1] + 1.4)
+-        normals.push(-dy, dx)
+-        coords.push(b[0], b[1] + 1.4)
+-        normals.push(-dy, dx)
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-        coords.push(b[0], b[1] + 1.4)
+-        normals.push(-dy, dx)
+-        coords.push(a[0], a[1] + 1.4)
+-        normals.push(dy, -dx)
+-        coords.push(b[0], b[1] + 1.4)
+-        normals.push(dy, -dx)
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-        var ex = d[0] - c[0]
+-        var ey = d[1] - c[1]
+-        var el = Math.sqrt(ex*ex + ey*ey)
+-        ex /= el
+-        ey /= el
++var glMatrix = require("./common.js");
+ 
+-        coords.push(b[0], b[1]+1.4)
+-        normals.push(dy, -dx)
+-        coords.push(b[0], b[1]+1.4)
+-        normals.push(-dy, dx)
+-        coords.push(c[0], c[1]+1.4)
+-        normals.push(-ey, ex)
++/**
++ * @class 2 Dimensional Vector
++ * @name vec2
++ */
++var vec2 = {};
+ 
+-        coords.push(c[0], c[1]+1.4)
+-        normals.push(-ey, ex)
+-        coords.push(b[0], b[1]+1.4)
+-        normals.push(ey, -ex)
+-        coords.push(c[0], c[1]+1.4)
+-        normals.push(ey, -ex)
+-      }
+-    })
+-  })
++/**
++ * Creates a new, empty vec2
++ *
++ * @returns {vec2} a new 2D vector
++ */
++vec2.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(2);
++    out[0] = 0;
++    out[1] = 0;
++    return out;
++};
+ 
+-  var bounds = [Infinity, Infinity, -Infinity, -Infinity]
+-  for(var i=0; i<coords.length; i+=2) {
+-    for(var j=0; j<2; ++j) {
+-      bounds[j]   = Math.min(bounds[j],   coords[i+j])
+-      bounds[2+j] = Math.max(bounds[2+j], coords[i+j])
+-    }
+-  }
++/**
++ * Creates a new vec2 initialized with values from an existing vector
++ *
++ * @param {vec2} a vector to clone
++ * @returns {vec2} a new 2D vector
++ */
++vec2.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(2);
++    out[0] = a[0];
++    out[1] = a[1];
++    return out;
++};
++
++/**
++ * Creates a new vec2 initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @returns {vec2} a new 2D vector
++ */
++vec2.fromValues = function(x, y) {
++    var out = new glMatrix.ARRAY_TYPE(2);
++    out[0] = x;
++    out[1] = y;
++    return out;
++};
++
++/**
++ * Copy the values from one vec2 to another
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the source vector
++ * @returns {vec2} out
++ */
++vec2.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    return out;
++};
+ 
+-  return BOUNDARIES[glyph] = {
+-    coords:  coords,
+-    normals: normals,
+-    bounds:  bounds
+-  }
+-}
++/**
++ * Set the components of a vec2 to the given values
++ *
++ * @param {vec2} out the receiving vector
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @returns {vec2} out
++ */
++vec2.set = function(out, x, y) {
++    out[0] = x;
++    out[1] = y;
++    return out;
++};
+ 
++/**
++ * Adds two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    return out;
++};
+ 
+-var VERTEX_SIZE       = 9
+-var VERTEX_SIZE_BYTES = VERTEX_SIZE * 4
++/**
++ * Subtracts vector b from vector a
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    return out;
++};
+ 
+-function GLScatterFancy(
+-    plot,
+-    shader,
+-    pickShader,
+-    positionBuffer,
+-    offsetBuffer,
+-    colorBuffer,
+-    idBuffer) {
+-  this.plot           = plot
+-  this.shader         = shader
+-  this.pickShader     = pickShader
+-  this.positionBuffer = positionBuffer
+-  this.offsetBuffer   = offsetBuffer
+-  this.colorBuffer    = colorBuffer
+-  this.idBuffer       = idBuffer
+-  this.bounds         = [Infinity, Infinity, -Infinity, -Infinity]
+-  this.numPoints      = 0
+-  this.numVertices    = 0
+-  this.pickOffset     = 0
+-  this.points         = null
+-}
++/**
++ * Alias for {@link vec2.subtract}
++ * @function
++ */
++vec2.sub = vec2.subtract;
+ 
+-var proto = GLScatterFancy.prototype
++/**
++ * Multiplies two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.multiply = function(out, a, b) {
++    out[0] = a[0] * b[0];
++    out[1] = a[1] * b[1];
++    return out;
++};
+ 
+-;(function() {
+-  var MATRIX = [
+-    1, 0, 0,
+-    0, 1, 0,
+-    0, 0, 1
+-  ];
++/**
++ * Alias for {@link vec2.multiply}
++ * @function
++ */
++vec2.mul = vec2.multiply;
+ 
+-  var PIXEL_SCALE = [1, 1]
++/**
++ * Divides two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.divide = function(out, a, b) {
++    out[0] = a[0] / b[0];
++    out[1] = a[1] / b[1];
++    return out;
++};
+ 
+-  function calcScales() {
+-    var plot          = this.plot
+-    var bounds        = this.bounds
++/**
++ * Alias for {@link vec2.divide}
++ * @function
++ */
++vec2.div = vec2.divide;
+ 
+-    var viewBox     = plot.viewBox
+-    var dataBox     = plot.dataBox
+-    var pixelRatio  = plot.pixelRatio
++/**
++ * Math.ceil the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to ceil
++ * @returns {vec2} out
++ */
++vec2.ceil = function (out, a) {
++    out[0] = Math.ceil(a[0]);
++    out[1] = Math.ceil(a[1]);
++    return out;
++};
+ 
+-    var boundX  = bounds[2] - bounds[0]
+-    var boundY  = bounds[3] - bounds[1]
+-    var dataX   = dataBox[2] - dataBox[0]
+-    var dataY   = dataBox[3] - dataBox[1]
++/**
++ * Math.floor the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to floor
++ * @returns {vec2} out
++ */
++vec2.floor = function (out, a) {
++    out[0] = Math.floor(a[0]);
++    out[1] = Math.floor(a[1]);
++    return out;
++};
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++/**
++ * Returns the minimum of two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.min = function(out, a, b) {
++    out[0] = Math.min(a[0], b[0]);
++    out[1] = Math.min(a[1], b[1]);
++    return out;
++};
+ 
+-    var screenX = (viewBox[2] - viewBox[0])
+-    var screenY = (viewBox[3] - viewBox[1])
++/**
++ * Returns the maximum of two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.max = function(out, a, b) {
++    out[0] = Math.max(a[0], b[0]);
++    out[1] = Math.max(a[1], b[1]);
++    return out;
++};
+ 
+-    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
+-    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
+-  }
++/**
++ * Math.round the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to round
++ * @returns {vec2} out
++ */
++vec2.round = function (out, a) {
++    out[0] = Math.round(a[0]);
++    out[1] = Math.round(a[1]);
++    return out;
++};
+ 
+-  proto.draw = function() {
+-    var plot          = this.plot
+-    var shader        = this.shader
+-    var numVertices   = this.numVertices
++/**
++ * Scales a vec2 by a scalar number
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {vec2} out
++ */
++vec2.scale = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    return out;
++};
+ 
+-    if(!numVertices) {
+-      return
+-    }
++/**
++ * Adds two vec2's after scaling the second operand by a scalar value
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @param {Number} scale the amount to scale b by before adding
++ * @returns {vec2} out
++ */
++vec2.scaleAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    return out;
++};
+ 
+-    var gl          = plot.gl
++/**
++ * Calculates the euclidian distance between two vec2's
++ *
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {Number} distance between a and b
++ */
++vec2.distance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1];
++    return Math.sqrt(x*x + y*y);
++};
+ 
+-    calcScales.call(this)
++/**
++ * Alias for {@link vec2.distance}
++ * @function
++ */
++vec2.dist = vec2.distance;
+ 
+-    shader.bind()
++/**
++ * Calculates the squared euclidian distance between two vec2's
++ *
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {Number} squared distance between a and b
++ */
++vec2.squaredDistance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1];
++    return x*x + y*y;
++};
+ 
+-    shader.uniforms.pixelScale = PIXEL_SCALE
+-    shader.uniforms.viewTransform = MATRIX
++/**
++ * Alias for {@link vec2.squaredDistance}
++ * @function
++ */
++vec2.sqrDist = vec2.squaredDistance;
+ 
+-    this.positionBuffer.bind()
+-    shader.attributes.position.pointer()
++/**
++ * Calculates the length of a vec2
++ *
++ * @param {vec2} a vector to calculate length of
++ * @returns {Number} length of a
++ */
++vec2.length = function (a) {
++    var x = a[0],
++        y = a[1];
++    return Math.sqrt(x*x + y*y);
++};
+ 
+-    this.offsetBuffer.bind()
+-    shader.attributes.offset.pointer()
++/**
++ * Alias for {@link vec2.length}
++ * @function
++ */
++vec2.len = vec2.length;
+ 
+-    this.colorBuffer.bind()
+-    shader.attributes.color.pointer(gl.UNSIGNED_BYTE, true)
++/**
++ * Calculates the squared length of a vec2
++ *
++ * @param {vec2} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ */
++vec2.squaredLength = function (a) {
++    var x = a[0],
++        y = a[1];
++    return x*x + y*y;
++};
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
+-  }
++/**
++ * Alias for {@link vec2.squaredLength}
++ * @function
++ */
++vec2.sqrLen = vec2.squaredLength;
+ 
+-  var PICK_OFFSET = [0,0,0,0]
++/**
++ * Negates the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to negate
++ * @returns {vec2} out
++ */
++vec2.negate = function(out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    return out;
++};
+ 
+-  proto.drawPick = function(offset) {
+-    var plot          = this.plot
+-    var shader        = this.pickShader
+-    var numVertices   = this.numVertices
++/**
++ * Returns the inverse of the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to invert
++ * @returns {vec2} out
++ */
++vec2.inverse = function(out, a) {
++  out[0] = 1.0 / a[0];
++  out[1] = 1.0 / a[1];
++  return out;
++};
+ 
+-    var gl          = plot.gl
++/**
++ * Normalize a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to normalize
++ * @returns {vec2} out
++ */
++vec2.normalize = function(out, a) {
++    var x = a[0],
++        y = a[1];
++    var len = x*x + y*y;
++    if (len > 0) {
++        //TODO: evaluate use of glm_invsqrt here?
++        len = 1 / Math.sqrt(len);
++        out[0] = a[0] * len;
++        out[1] = a[1] * len;
++    }
++    return out;
++};
+ 
+-    this.pickOffset = offset
++/**
++ * Calculates the dot product of two vec2's
++ *
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {Number} dot product of a and b
++ */
++vec2.dot = function (a, b) {
++    return a[0] * b[0] + a[1] * b[1];
++};
+ 
+-    if(!numVertices) {
+-      return offset
+-    }
++/**
++ * Computes the cross product of two vec2's
++ * Note that the cross product must by definition produce a 3D vector
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec3} out
++ */
++vec2.cross = function(out, a, b) {
++    var z = a[0] * b[1] - a[1] * b[0];
++    out[0] = out[1] = 0;
++    out[2] = z;
++    return out;
++};
+ 
+-    for(var i=0; i<4; ++i) {
+-      PICK_OFFSET[i] = ((offset>>(i*8)) & 0xff)
+-    }
++/**
++ * Performs a linear interpolation between two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec2} out
++ */
++vec2.lerp = function (out, a, b, t) {
++    var ax = a[0],
++        ay = a[1];
++    out[0] = ax + t * (b[0] - ax);
++    out[1] = ay + t * (b[1] - ay);
++    return out;
++};
+ 
+-    calcScales.call(this)
++/**
++ * Generates a random vector with the given scale
++ *
++ * @param {vec2} out the receiving vector
++ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
++ * @returns {vec2} out
++ */
++vec2.random = function (out, scale) {
++    scale = scale || 1.0;
++    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
++    out[0] = Math.cos(r) * scale;
++    out[1] = Math.sin(r) * scale;
++    return out;
++};
+ 
+-    shader.bind()
++/**
++ * Transforms the vec2 with a mat2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat2} m matrix to transform with
++ * @returns {vec2} out
++ */
++vec2.transformMat2 = function(out, a, m) {
++    var x = a[0],
++        y = a[1];
++    out[0] = m[0] * x + m[2] * y;
++    out[1] = m[1] * x + m[3] * y;
++    return out;
++};
+ 
+-    shader.uniforms.pixelScale    = PIXEL_SCALE
+-    shader.uniforms.viewTransform = MATRIX
+-    shader.uniforms.pickOffset    = PICK_OFFSET
++/**
++ * Transforms the vec2 with a mat2d
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat2d} m matrix to transform with
++ * @returns {vec2} out
++ */
++vec2.transformMat2d = function(out, a, m) {
++    var x = a[0],
++        y = a[1];
++    out[0] = m[0] * x + m[2] * y + m[4];
++    out[1] = m[1] * x + m[3] * y + m[5];
++    return out;
++};
+ 
+-    this.positionBuffer.bind()
+-    shader.attributes.position.pointer()
++/**
++ * Transforms the vec2 with a mat3
++ * 3rd vector component is implicitly '1'
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat3} m matrix to transform with
++ * @returns {vec2} out
++ */
++vec2.transformMat3 = function(out, a, m) {
++    var x = a[0],
++        y = a[1];
++    out[0] = m[0] * x + m[3] * y + m[6];
++    out[1] = m[1] * x + m[4] * y + m[7];
++    return out;
++};
+ 
+-    this.offsetBuffer.bind()
+-    shader.attributes.offset.pointer()
++/**
++ * Transforms the vec2 with a mat4
++ * 3rd vector component is implicitly '0'
++ * 4th vector component is implicitly '1'
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec2} out
++ */
++vec2.transformMat4 = function(out, a, m) {
++    var x = a[0], 
++        y = a[1];
++    out[0] = m[0] * x + m[4] * y + m[12];
++    out[1] = m[1] * x + m[5] * y + m[13];
++    return out;
++};
+ 
+-    this.idBuffer.bind()
+-    shader.attributes.id.pointer(gl.UNSIGNED_BYTE, false)
++/**
++ * Perform some operation over an array of vec2s.
++ *
++ * @param {Array} a the array of vectors to iterate over
++ * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed
++ * @param {Number} offset Number of elements to skip at the beginning of the array
++ * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
++ * @param {Function} fn Function to call for each vector in the array
++ * @param {Object} [arg] additional argument to pass to fn
++ * @returns {Array} a
++ * @function
++ */
++vec2.forEach = (function() {
++    var vec = vec2.create();
++
++    return function(a, stride, offset, count, fn, arg) {
++        var i, l;
++        if(!stride) {
++            stride = 2;
++        }
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
++        if(!offset) {
++            offset = 0;
++        }
++        
++        if(count) {
++            l = Math.min((count * stride) + offset, a.length);
++        } else {
++            l = a.length;
++        }
+ 
+-    return offset + this.numPoints
+-  }
+-})()
++        for(i = offset; i < l; i += stride) {
++            vec[0] = a[i]; vec[1] = a[i+1];
++            fn(vec, vec, arg);
++            a[i] = vec[0]; a[i+1] = vec[1];
++        }
++        
++        return a;
++    };
++})();
+ 
+-proto.pick = function(x, y, value) {
+-  var pickOffset = this.pickOffset
+-  var pointCount = this.numPoints
+-  if(value < pickOffset || value >= pickOffset + pointCount) {
+-    return null
+-  }
+-  var pointId = value - pickOffset
+-  var points   = this.points
+-  return {
+-    object:     this,
+-    pointId:    pointId,
+-    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+-  }
+-}
++/**
++ * Returns a string representation of a vector
++ *
++ * @param {vec2} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++vec2.str = function (a) {
++    return 'vec2(' + a[0] + ', ' + a[1] + ')';
++};
+ 
+-proto.update = function(options) {
+-  options = options || {}
++/**
++ * Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)
++ *
++ * @param {vec2} a The first vector.
++ * @param {vec2} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec2.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1];
++};
+ 
+-  var positions     = options.positions    || []
+-  var colors        = options.colors       || []
+-  var glyphs        = options.glyphs       || []
+-  var sizes         = options.sizes        || []
+-  var borderWidths  = options.borderWidths || []
+-  var borderColors  = options.borderColors || []
++/**
++ * Returns whether or not the vectors have approximately the same elements in the same position.
++ *
++ * @param {vec2} a The first vector.
++ * @param {vec2} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec2.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1];
++    var b0 = b[0], b1 = b[1];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)));
++};
+ 
+-  this.points = positions
++module.exports = vec2;
+ 
+-  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
+-  var numVertices = 0
+-  for(var i=0; i<glyphs.length; ++i) {
+-    numVertices += (
+-      textCache('sans-serif', glyphs[i]).data.length +
+-      getBoundary(glyphs[i]).coords.length
+-    )>> 1
+-    for(var j=0; j<2; ++j) {
+-      bounds[j]   = Math.min(bounds[j],   positions[2*i+j])
+-      bounds[2+j] = Math.max(bounds[2+j], positions[2*i+j])
+-    }
+-  }
++},{"./common.js":155}],162:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-  if(bounds[0] === bounds[2]) {
+-    bounds[2] += 1
+-  }
+-  if(bounds[3] === bounds[1]) {
+-    bounds[3] += 1
+-  }
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-  var sx = 1/(bounds[2] - bounds[0])
+-  var sy = 1/(bounds[3] - bounds[1])
+-  var tx = bounds[0]
+-  var ty = bounds[1]
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-  var v_position = pool.mallocFloat32(2 * numVertices)
+-  var v_offset   = pool.mallocFloat32(2 * numVertices)
+-  var v_color    = pool.mallocUint8(4 * numVertices)
+-  var v_ids      = pool.mallocUint32(numVertices)
+-  var ptr = 0
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-  for(var i=0; i<glyphs.length; ++i) {
+-    var glyph = textCache('sans-serif', glyphs[i])
+-    var border = getBoundary(glyphs[i])
+-    var x = sx * (positions[2*i]   - tx)
+-    var y = sy * (positions[2*i+1] - ty)
+-    var s = sizes[i]
+-    var r = colors[4*i]   * 255.0
+-    var g = colors[4*i+1] * 255.0
+-    var b = colors[4*i+2] * 255.0
+-    var a = colors[4*i+3] * 255.0
++var glMatrix = require("./common.js");
+ 
+-    var gx = 0.5*(border.bounds[0] + border.bounds[2])
+-    var gy = 0.5*(border.bounds[1] + border.bounds[3])
++/**
++ * @class 3 Dimensional Vector
++ * @name vec3
++ */
++var vec3 = {};
+ 
+-    for(var j=0; j<glyph.data.length; j+=2) {
+-      v_position[2*ptr]   = x
+-      v_position[2*ptr+1] = y
+-      v_offset[2*ptr]     = -s * (glyph.data[j]   - gx)
+-      v_offset[2*ptr+1]   = -s * (glyph.data[j+1] - gy)
+-      v_color[4*ptr]      = r
+-      v_color[4*ptr+1]    = g
+-      v_color[4*ptr+2]    = b
+-      v_color[4*ptr+3]    = a
+-      v_ids[ptr]          = i
++/**
++ * Creates a new, empty vec3
++ *
++ * @returns {vec3} a new 3D vector
++ */
++vec3.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(3);
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    return out;
++};
+ 
+-      ptr += 1
+-    }
++/**
++ * Creates a new vec3 initialized with values from an existing vector
++ *
++ * @param {vec3} a vector to clone
++ * @returns {vec3} a new 3D vector
++ */
++vec3.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(3);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    return out;
++};
+ 
+-    var w = borderWidths[i]
+-    r = borderColors[4*i]   * 255.0
+-    g = borderColors[4*i+1] * 255.0
+-    b = borderColors[4*i+2] * 255.0
+-    a = borderColors[4*i+3] * 255.0
++/**
++ * Creates a new vec3 initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @returns {vec3} a new 3D vector
++ */
++vec3.fromValues = function(x, y, z) {
++    var out = new glMatrix.ARRAY_TYPE(3);
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    return out;
++};
+ 
+-    for(var j=0; j<border.coords.length; j+=2) {
+-      v_position[2*ptr]   = x
+-      v_position[2*ptr+1] = y
+-      v_offset[2*ptr]     = -(s*(border.coords[j]  -gx)+w*border.normals[j])
+-      v_offset[2*ptr+1]   = -(s*(border.coords[j+1]-gy)+w*border.normals[j+1])
+-      v_color[4*ptr]      = r
+-      v_color[4*ptr+1]    = g
+-      v_color[4*ptr+2]    = b
+-      v_color[4*ptr+3]    = a
+-      v_ids[ptr]          = i
++/**
++ * Copy the values from one vec3 to another
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the source vector
++ * @returns {vec3} out
++ */
++vec3.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    return out;
++};
+ 
+-      ptr += 1
+-    }
+-  }
++/**
++ * Set the components of a vec3 to the given values
++ *
++ * @param {vec3} out the receiving vector
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @returns {vec3} out
++ */
++vec3.set = function(out, x, y, z) {
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    return out;
++};
+ 
+-  this.numPoints = glyphs.length
+-  this.numVertices = numVertices
++/**
++ * Adds two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    return out;
++};
+ 
+-  this.positionBuffer.update(v_position)
+-  this.offsetBuffer.update(v_offset)
+-  this.colorBuffer.update(v_color)
+-  this.idBuffer.update(v_ids)
++/**
++ * Subtracts vector b from vector a
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    return out;
++};
+ 
+-  pool.free(v_position)
+-  pool.free(v_offset)
+-  pool.free(v_color)
+-  pool.free(v_ids)
+-}
++/**
++ * Alias for {@link vec3.subtract}
++ * @function
++ */
++vec3.sub = vec3.subtract;
+ 
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.pickShader.dispose()
+-  this.positionBuffer.dispose()
+-  this.offsetBuffer.dispose()
+-  this.colorBuffer.dispose()
+-  this.idBuffer.dispose()
+-  this.plot.removeObject(this)
+-}
++/**
++ * Multiplies two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.multiply = function(out, a, b) {
++    out[0] = a[0] * b[0];
++    out[1] = a[1] * b[1];
++    out[2] = a[2] * b[2];
++    return out;
++};
+ 
+-function createFancyScatter2D(plot, options) {
+-  var gl = plot.gl
++/**
++ * Alias for {@link vec3.multiply}
++ * @function
++ */
++vec3.mul = vec3.multiply;
+ 
+-  var shader      = createShader(gl, shaders.vertex,     shaders.fragment)
+-  var pickShader  = createShader(gl, shaders.pickVertex, shaders.pickFragment)
++/**
++ * Divides two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.divide = function(out, a, b) {
++    out[0] = a[0] / b[0];
++    out[1] = a[1] / b[1];
++    out[2] = a[2] / b[2];
++    return out;
++};
+ 
+-  var positionBuffer  = createBuffer(gl)
+-  var offsetBuffer    = createBuffer(gl)
+-  var colorBuffer     = createBuffer(gl)
+-  var idBuffer        = createBuffer(gl)
++/**
++ * Alias for {@link vec3.divide}
++ * @function
++ */
++vec3.div = vec3.divide;
+ 
+-  var scatter = new GLScatterFancy(
+-    plot,
+-    shader,
+-    pickShader,
+-    positionBuffer,
+-    offsetBuffer,
+-    colorBuffer,
+-    idBuffer)
++/**
++ * Math.ceil the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to ceil
++ * @returns {vec3} out
++ */
++vec3.ceil = function (out, a) {
++    out[0] = Math.ceil(a[0]);
++    out[1] = Math.ceil(a[1]);
++    out[2] = Math.ceil(a[2]);
++    return out;
++};
+ 
+-  scatter.update(options)
++/**
++ * Math.floor the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to floor
++ * @returns {vec3} out
++ */
++vec3.floor = function (out, a) {
++    out[0] = Math.floor(a[0]);
++    out[1] = Math.floor(a[1]);
++    out[2] = Math.floor(a[2]);
++    return out;
++};
+ 
+-  plot.addObject(scatter)
++/**
++ * Returns the minimum of two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.min = function(out, a, b) {
++    out[0] = Math.min(a[0], b[0]);
++    out[1] = Math.min(a[1], b[1]);
++    out[2] = Math.min(a[2], b[2]);
++    return out;
++};
+ 
+-  return scatter
+-}
++/**
++ * Returns the maximum of two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.max = function(out, a, b) {
++    out[0] = Math.max(a[0], b[0]);
++    out[1] = Math.max(a[1], b[1]);
++    out[2] = Math.max(a[2], b[2]);
++    return out;
++};
+ 
+-},{"./lib/shaders":190,"gl-buffer":124,"gl-shader":203,"text-cache":453,"typedarray-pool":458,"vectorize-text":460}],192:[function(require,module,exports){
++/**
++ * Math.round the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to round
++ * @returns {vec3} out
++ */
++vec3.round = function (out, a) {
++    out[0] = Math.round(a[0]);
++    out[1] = Math.round(a[1]);
++    out[2] = Math.round(a[2]);
++    return out;
++};
+ 
++/**
++ * Scales a vec3 by a scalar number
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {vec3} out
++ */
++vec3.scale = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    return out;
++};
+ 
+-exports.pointVertex       = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute float weight;\n\nuniform mat3 matrix;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}\n"
+-exports.pointFragment     = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}\n"
+-exports.pickVertex        = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n"
+-exports.pickFragment      = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"
++/**
++ * Adds two vec3's after scaling the second operand by a scalar value
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {Number} scale the amount to scale b by before adding
++ * @returns {vec3} out
++ */
++vec3.scaleAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    return out;
++};
+ 
+-},{}],193:[function(require,module,exports){
+-arguments[4][68][0].apply(exports,arguments)
+-},{"dup":68}],194:[function(require,module,exports){
+-'use strict'
++/**
++ * Calculates the euclidian distance between two vec3's
++ *
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} distance between a and b
++ */
++vec3.distance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2];
++    return Math.sqrt(x*x + y*y + z*z);
++};
+ 
+-module.exports = sortLevels
++/**
++ * Alias for {@link vec3.distance}
++ * @function
++ */
++vec3.dist = vec3.distance;
+ 
+-var INSERT_SORT_CUTOFF = 32
++/**
++ * Calculates the squared euclidian distance between two vec3's
++ *
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} squared distance between a and b
++ */
++vec3.squaredDistance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2];
++    return x*x + y*y + z*z;
++};
+ 
+-function sortLevels(data_levels, data_points, data_ids, data_weights, n0) {
+-  if (n0 <= 4*INSERT_SORT_CUTOFF) {
+-    insertionSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
+-  }
+-}
++/**
++ * Alias for {@link vec3.squaredDistance}
++ * @function
++ */
++vec3.sqrDist = vec3.squaredDistance;
+ 
+-function insertionSort(left, right, data_levels, data_points, data_ids, data_weights) {
+-  for(var i=left+1; i<=right; ++i) {
+-    var a_level  = data_levels[i]
+-    var a_x      = data_points[2*i]
+-    var a_y      = data_points[2*i+1]
+-    var a_id     = data_ids[i]
+-    var a_weight = data_weights[i]
++/**
++ * Calculates the length of a vec3
++ *
++ * @param {vec3} a vector to calculate length of
++ * @returns {Number} length of a
++ */
++vec3.length = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2];
++    return Math.sqrt(x*x + y*y + z*z);
++};
+ 
+-    var j = i
+-    while(j > left) {
+-      var b_level = data_levels[j-1]
+-      var b_x     = data_points[2*(j-1)]
+-      if(((b_level - a_level) || (a_x - b_x)) >= 0) {
+-        break
+-      }
+-      data_levels[j]      = b_level
+-      data_points[2*j]    = b_x
+-      data_points[2*j+1]  = data_points[2*j-1]
+-      data_ids[j]         = data_ids[j-1]
+-      data_weights[j]     = data_weights[j-1]
+-      j -= 1
+-    }
++/**
++ * Alias for {@link vec3.length}
++ * @function
++ */
++vec3.len = vec3.length;
+ 
+-    data_levels[j]     = a_level
+-    data_points[2*j]   = a_x
+-    data_points[2*j+1] = a_y
+-    data_ids[j]        = a_id
+-    data_weights[j]    = a_weight
+-  }
+-}
++/**
++ * Calculates the squared length of a vec3
++ *
++ * @param {vec3} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ */
++vec3.squaredLength = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2];
++    return x*x + y*y + z*z;
++};
+ 
+-function swap(i, j, data_levels, data_points, data_ids, data_weights) {
+-  var a_level = data_levels[i]
+-  var a_x     = data_points[2*i]
+-  var a_y     = data_points[2*i+1]
+-  var a_id    = data_ids[i]
+-  var a_weight = data_weights[i]
++/**
++ * Alias for {@link vec3.squaredLength}
++ * @function
++ */
++vec3.sqrLen = vec3.squaredLength;
+ 
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
++/**
++ * Negates the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to negate
++ * @returns {vec3} out
++ */
++vec3.negate = function(out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    return out;
++};
+ 
+-  data_levels[j]     = a_level
+-  data_points[2*j]   = a_x
+-  data_points[2*j+1] = a_y
+-  data_ids[j]        = a_id
+-  data_weights[j]    = a_weight
+-}
++/**
++ * Returns the inverse of the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to invert
++ * @returns {vec3} out
++ */
++vec3.inverse = function(out, a) {
++  out[0] = 1.0 / a[0];
++  out[1] = 1.0 / a[1];
++  out[2] = 1.0 / a[2];
++  return out;
++};
+ 
+-function move(i, j, data_levels, data_points, data_ids, data_weights) {
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
+-}
++/**
++ * Normalize a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to normalize
++ * @returns {vec3} out
++ */
++vec3.normalize = function(out, a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2];
++    var len = x*x + y*y + z*z;
++    if (len > 0) {
++        //TODO: evaluate use of glm_invsqrt here?
++        len = 1 / Math.sqrt(len);
++        out[0] = a[0] * len;
++        out[1] = a[1] * len;
++        out[2] = a[2] * len;
++    }
++    return out;
++};
+ 
+-function rotate(i, j, k, data_levels, data_points, data_ids, data_weights) {
+-  var a_level = data_levels[i]
+-  var a_x     = data_points[2*i]
+-  var a_y     = data_points[2*i+1]
+-  var a_id    = data_ids[i]
+-  var a_weight = data_weights[i]
++/**
++ * Calculates the dot product of two vec3's
++ *
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} dot product of a and b
++ */
++vec3.dot = function (a, b) {
++    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
++};
+ 
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
++/**
++ * Computes the cross product of two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.cross = function(out, a, b) {
++    var ax = a[0], ay = a[1], az = a[2],
++        bx = b[0], by = b[1], bz = b[2];
+ 
+-  data_levels[j]     = data_levels[k]
+-  data_points[2*j]   = data_points[2*k]
+-  data_points[2*j+1] = data_points[2*k+1]
+-  data_ids[j]        = data_ids[k]
+-  data_weights[j]    = data_weights[k]
++    out[0] = ay * bz - az * by;
++    out[1] = az * bx - ax * bz;
++    out[2] = ax * by - ay * bx;
++    return out;
++};
+ 
+-  data_levels[k]     = a_level
+-  data_points[2*k]   = a_x
+-  data_points[2*k+1] = a_y
+-  data_ids[k]        = a_id
+-  data_weights[k]    = a_weight
+-}
++/**
++ * Performs a linear interpolation between two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
++ */
++vec3.lerp = function (out, a, b, t) {
++    var ax = a[0],
++        ay = a[1],
++        az = a[2];
++    out[0] = ax + t * (b[0] - ax);
++    out[1] = ay + t * (b[1] - ay);
++    out[2] = az + t * (b[2] - az);
++    return out;
++};
+ 
+-function shufflePivot(
+-  i, j,
+-  a_level, a_x, a_y, a_id, a_weight,
+-  data_levels, data_points, data_ids, data_weights) {
++/**
++ * Performs a hermite interpolation with two control points
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {vec3} c the third operand
++ * @param {vec3} d the fourth operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
++ */
++vec3.hermite = function (out, a, b, c, d, t) {
++  var factorTimes2 = t * t,
++      factor1 = factorTimes2 * (2 * t - 3) + 1,
++      factor2 = factorTimes2 * (t - 2) + t,
++      factor3 = factorTimes2 * (t - 1),
++      factor4 = factorTimes2 * (3 - 2 * t);
++  
++  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
++  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
++  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
++  
++  return out;
++};
+ 
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
++/**
++ * Performs a bezier interpolation with two control points
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {vec3} c the third operand
++ * @param {vec3} d the fourth operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
++ */
++vec3.bezier = function (out, a, b, c, d, t) {
++  var inverseFactor = 1 - t,
++      inverseFactorTimesTwo = inverseFactor * inverseFactor,
++      factorTimes2 = t * t,
++      factor1 = inverseFactorTimesTwo * inverseFactor,
++      factor2 = 3 * t * inverseFactorTimesTwo,
++      factor3 = 3 * factorTimes2 * inverseFactor,
++      factor4 = factorTimes2 * t;
++  
++  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
++  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
++  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
++  
++  return out;
++};
+ 
+-  data_levels[j]     = a_level
+-  data_points[2*j]   = a_x
+-  data_points[2*j+1] = a_y
+-  data_ids[j]        = a_id
+-  data_weights[j]    = a_weight
+-}
++/**
++ * Generates a random vector with the given scale
++ *
++ * @param {vec3} out the receiving vector
++ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
++ * @returns {vec3} out
++ */
++vec3.random = function (out, scale) {
++    scale = scale || 1.0;
+ 
+-function compare(i, j, data_levels, data_points, data_ids) {
+-  return ((data_levels[i] - data_levels[j]) ||
+-          (data_points[2*j] - data_points[2*i]) ||
+-          (data_ids[i] - data_ids[j])) < 0
+-}
++    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
++    var z = (glMatrix.RANDOM() * 2.0) - 1.0;
++    var zScale = Math.sqrt(1.0-z*z) * scale;
+ 
+-function comparePivot(i, level, x, y, id, data_levels, data_points, data_ids) {
+-  return ((level - data_levels[i]) ||
+-          (data_points[2*i] - x) ||
+-          (id - data_ids[i])) < 0
+-}
++    out[0] = Math.cos(r) * zScale;
++    out[1] = Math.sin(r) * zScale;
++    out[2] = z * scale;
++    return out;
++};
+ 
+-function quickSort(left, right, data_levels, data_points, data_ids, data_weights) {
+-  var sixth = (right - left + 1) / 6 | 0,
+-      index1 = left + sixth,
+-      index5 = right - sixth,
+-      index3 = left + right >> 1,
+-      index2 = index3 - sixth,
+-      index4 = index3 + sixth,
+-      el1 = index1,
+-      el2 = index2,
+-      el3 = index3,
+-      el4 = index4,
+-      el5 = index5,
+-      less = left + 1,
+-      great = right - 1,
+-      tmp = 0
+-  if(compare(el1, el2, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el1
+-    el1 = el2
+-    el2 = tmp
+-  }
+-  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el1, el3, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el1
+-    el1 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el1, el4, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el1
+-    el1 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el3, el4, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el3
+-    el3 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el2, el5, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el2
+-    el2 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
++/**
++ * Transforms the vec3 with a mat4.
++ * 4th vector component is implicitly '1'
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec3} out
++ */
++vec3.transformMat4 = function(out, a, m) {
++    var x = a[0], y = a[1], z = a[2],
++        w = m[3] * x + m[7] * y + m[11] * z + m[15];
++    w = w || 1.0;
++    out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w;
++    out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w;
++    out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w;
++    return out;
++};
+ 
+-  var pivot1_level  = data_levels[el2]
+-  var pivot1_x      = data_points[2*el2]
+-  var pivot1_y      = data_points[2*el2+1]
+-  var pivot1_id     = data_ids[el2]
+-  var pivot1_weight = data_weights[el2]
++/**
++ * Transforms the vec3 with a mat3.
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to transform
++ * @param {mat4} m the 3x3 matrix to transform with
++ * @returns {vec3} out
++ */
++vec3.transformMat3 = function(out, a, m) {
++    var x = a[0], y = a[1], z = a[2];
++    out[0] = x * m[0] + y * m[3] + z * m[6];
++    out[1] = x * m[1] + y * m[4] + z * m[7];
++    out[2] = x * m[2] + y * m[5] + z * m[8];
++    return out;
++};
+ 
+-  var pivot2_level  = data_levels[el4]
+-  var pivot2_x      = data_points[2*el4]
+-  var pivot2_y      = data_points[2*el4+1]
+-  var pivot2_id     = data_ids[el4]
+-  var pivot2_weight = data_weights[el4]
++/**
++ * Transforms the vec3 with a quat
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to transform
++ * @param {quat} q quaternion to transform with
++ * @returns {vec3} out
++ */
++vec3.transformQuat = function(out, a, q) {
++    // benchmarks: http://jsperf.com/quaternion-transform-vec3-implementations
+ 
+-  var ptr0 = el1
+-  var ptr2 = el3
+-  var ptr4 = el5
+-  var ptr5 = index1
+-  var ptr6 = index3
+-  var ptr7 = index5
++    var x = a[0], y = a[1], z = a[2],
++        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+ 
+-  var level_x = data_levels[ptr0]
+-  var level_y = data_levels[ptr2]
+-  var level_z = data_levels[ptr4]
+-  data_levels[ptr5] = level_x
+-  data_levels[ptr6] = level_y
+-  data_levels[ptr7] = level_z
++        // calculate quat * vec
++        ix = qw * x + qy * z - qz * y,
++        iy = qw * y + qz * x - qx * z,
++        iz = qw * z + qx * y - qy * x,
++        iw = -qx * x - qy * y - qz * z;
+ 
+-  for (var i1 = 0; i1 < 2; ++i1) {
+-    var x = data_points[2*ptr0+i1]
+-    var y = data_points[2*ptr2+i1]
+-    var z = data_points[2*ptr4+i1]
+-    data_points[2*ptr5+i1] = x
+-    data_points[2*ptr6+i1] = y
+-    data_points[2*ptr7+i1] = z
+-  }
++    // calculate result * inverse quat
++    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
++    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
++    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
++    return out;
++};
+ 
+-  var id_x = data_ids[ptr0]
+-  var id_y = data_ids[ptr2]
+-  var id_z = data_ids[ptr4]
+-  data_ids[ptr5] = id_x
+-  data_ids[ptr6] = id_y
+-  data_ids[ptr7] = id_z
++/**
++ * Rotate a 3D vector around the x-axis
++ * @param {vec3} out The receiving vec3
++ * @param {vec3} a The vec3 point to rotate
++ * @param {vec3} b The origin of the rotation
++ * @param {Number} c The angle of rotation
++ * @returns {vec3} out
++ */
++vec3.rotateX = function(out, a, b, c){
++   var p = [], r=[];
++	  //Translate point to the origin
++	  p[0] = a[0] - b[0];
++	  p[1] = a[1] - b[1];
++  	p[2] = a[2] - b[2];
+ 
+-  var weight_x = data_weights[ptr0]
+-  var weight_y = data_weights[ptr2]
+-  var weight_z = data_weights[ptr4]
+-  data_weights[ptr5] = weight_x
+-  data_weights[ptr6] = weight_y
+-  data_weights[ptr7] = weight_z
++	  //perform rotation
++	  r[0] = p[0];
++	  r[1] = p[1]*Math.cos(c) - p[2]*Math.sin(c);
++	  r[2] = p[1]*Math.sin(c) + p[2]*Math.cos(c);
+ 
+-  move(index2, left,  data_levels, data_points, data_ids, data_weights)
+-  move(index4, right, data_levels, data_points, data_ids, data_weights)
+-  for (var k = less; k <= great; ++k) {
+-    if (comparePivot(k,
+-        pivot1_level, pivot1_x, pivot1_y, pivot1_id,
+-        data_levels, data_points, data_ids)) {
+-      if (k !== less) {
+-        swap(k, less, data_levels, data_points, data_ids, data_weights)
+-      }
+-      ++less;
+-    } else {
+-      if (!comparePivot(k,
+-          pivot2_level, pivot2_x, pivot2_y, pivot2_id,
+-          data_levels, data_points, data_ids)) {
+-        while (true) {
+-          if (!comparePivot(great,
+-              pivot2_level, pivot2_x, pivot2_y, pivot2_id,
+-              data_levels, data_points, data_ids)) {
+-            if (--great < k) {
+-              break;
+-            }
+-            continue;
+-          } else {
+-            if (comparePivot(great,
+-                pivot1_level, pivot1_x, pivot1_y, pivot1_id,
+-                data_levels, data_points, data_ids)) {
+-              rotate(k, less, great, data_levels, data_points, data_ids, data_weights)
+-              ++less;
+-              --great;
+-            } else {
+-              swap(k, great, data_levels, data_points, data_ids, data_weights)
+-              --great;
+-            }
+-            break;
+-          }
+-        }
+-      }
+-    }
+-  }
+-  shufflePivot(left, less-1, pivot1_level, pivot1_x, pivot1_y, pivot1_id, pivot1_weight, data_levels, data_points, data_ids, data_weights)
+-  shufflePivot(right, great+1, pivot2_level, pivot2_x, pivot2_y, pivot2_id, pivot2_weight, data_levels, data_points, data_ids, data_weights)
+-  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
+-    insertionSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
+-  }
+-  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
+-    insertionSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
+-  }
+-  if (great - less <= INSERT_SORT_CUTOFF) {
+-    insertionSort(less, great, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(less, great, data_levels, data_points, data_ids, data_weights)
+-  }
+-}
++	  //translate to correct position
++	  out[0] = r[0] + b[0];
++	  out[1] = r[1] + b[1];
++	  out[2] = r[2] + b[2];
+ 
+-},{}],195:[function(require,module,exports){
+-'use strict'
++  	return out;
++};
+ 
+-var pool = require('typedarray-pool')
++/**
++ * Rotate a 3D vector around the y-axis
++ * @param {vec3} out The receiving vec3
++ * @param {vec3} a The vec3 point to rotate
++ * @param {vec3} b The origin of the rotation
++ * @param {Number} c The angle of rotation
++ * @returns {vec3} out
++ */
++vec3.rotateY = function(out, a, b, c){
++  	var p = [], r=[];
++  	//Translate point to the origin
++  	p[0] = a[0] - b[0];
++  	p[1] = a[1] - b[1];
++  	p[2] = a[2] - b[2];
++  
++  	//perform rotation
++  	r[0] = p[2]*Math.sin(c) + p[0]*Math.cos(c);
++  	r[1] = p[1];
++  	r[2] = p[2]*Math.cos(c) - p[0]*Math.sin(c);
++  
++  	//translate to correct position
++  	out[0] = r[0] + b[0];
++  	out[1] = r[1] + b[1];
++  	out[2] = r[2] + b[2];
++  
++  	return out;
++};
+ 
+-var sortLevels = require('./lib/sort')
++/**
++ * Rotate a 3D vector around the z-axis
++ * @param {vec3} out The receiving vec3
++ * @param {vec3} a The vec3 point to rotate
++ * @param {vec3} b The origin of the rotation
++ * @param {Number} c The angle of rotation
++ * @returns {vec3} out
++ */
++vec3.rotateZ = function(out, a, b, c){
++  	var p = [], r=[];
++  	//Translate point to the origin
++  	p[0] = a[0] - b[0];
++  	p[1] = a[1] - b[1];
++  	p[2] = a[2] - b[2];
++  
++  	//perform rotation
++  	r[0] = p[0]*Math.cos(c) - p[1]*Math.sin(c);
++  	r[1] = p[0]*Math.sin(c) + p[1]*Math.cos(c);
++  	r[2] = p[2];
++  
++  	//translate to correct position
++  	out[0] = r[0] + b[0];
++  	out[1] = r[1] + b[1];
++  	out[2] = r[2] + b[2];
++  
++  	return out;
++};
+ 
+-module.exports = snapPoints
++/**
++ * Perform some operation over an array of vec3s.
++ *
++ * @param {Array} a the array of vectors to iterate over
++ * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed
++ * @param {Number} offset Number of elements to skip at the beginning of the array
++ * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array
++ * @param {Function} fn Function to call for each vector in the array
++ * @param {Object} [arg] additional argument to pass to fn
++ * @returns {Array} a
++ * @function
++ */
++vec3.forEach = (function() {
++    var vec = vec3.create();
+ 
+-function partition(points, ids, start, end, lox, loy, hix, hiy) {
+-  var mid = start
+-  for(var i=start; i<end; ++i) {
+-    var x  = points[2*i]
+-    var y  = points[2*i+1]
+-    var s  = ids[i]
+-    if(lox <= x && x <= hix &&
+-       loy <= y && y <= hiy) {
+-      if(i === mid) {
+-        mid += 1
+-      } else {
+-        points[2*i]     = points[2*mid]
+-        points[2*i+1]   = points[2*mid+1]
+-        ids[i]          = ids[mid]
+-        points[2*mid]   = x
+-        points[2*mid+1] = y
+-        ids[mid]        = s
+-        mid += 1
+-      }
+-    }
+-  }
+-  return mid
+-}
++    return function(a, stride, offset, count, fn, arg) {
++        var i, l;
++        if(!stride) {
++            stride = 3;
++        }
+ 
+-function SnapInterval(pixelSize, offset, count) {
+-  this.pixelSize  = pixelSize
+-  this.offset     = offset
+-  this.count      = count
+-}
++        if(!offset) {
++            offset = 0;
++        }
++        
++        if(count) {
++            l = Math.min((count * stride) + offset, a.length);
++        } else {
++            l = a.length;
++        }
+ 
+-function snapPoints(points, ids, weights, bounds) {
+-  var n    = points.length >>> 1
+-  if(n < 1) {
+-    return []
+-  }
++        for(i = offset; i < l; i += stride) {
++            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2];
++            fn(vec, vec, arg);
++            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2];
++        }
++        
++        return a;
++    };
++})();
+ 
+-  var lox =  Infinity, loy =  Infinity
+-  var hix = -Infinity, hiy = -Infinity
+-  for(var i=0; i<n; ++i) {
+-    var x = points[2*i]
+-    var y = points[2*i+1]
+-    lox = Math.min(lox, x)
+-    hix = Math.max(hix, x)
+-    loy = Math.min(loy, y)
+-    hiy = Math.max(hiy, y)
+-    ids[i] = i
+-  }
++/**
++ * Get the angle between two 3D vectors
++ * @param {vec3} a The first operand
++ * @param {vec3} b The second operand
++ * @returns {Number} The angle in radians
++ */
++vec3.angle = function(a, b) {
++   
++    var tempA = vec3.fromValues(a[0], a[1], a[2]);
++    var tempB = vec3.fromValues(b[0], b[1], b[2]);
++ 
++    vec3.normalize(tempA, tempA);
++    vec3.normalize(tempB, tempB);
++ 
++    var cosine = vec3.dot(tempA, tempB);
+ 
+-  if(lox === hix) {
+-    hix += 1 + Math.abs(hix)
+-  }
+-  if(loy === hiy) {
+-    hiy += 1 + Math.abs(hix)
+-  }
++    if(cosine > 1.0){
++        return 0;
++    } else {
++        return Math.acos(cosine);
++    }     
++};
+ 
+-  //Calculate diameter
+-  var scaleX = 1.0 / (hix - lox)
+-  var scaleY = 1.0 / (hiy - loy)
+-  var diam = Math.max(hix - lox, hiy - loy)
++/**
++ * Returns a string representation of a vector
++ *
++ * @param {vec3} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++vec3.str = function (a) {
++    return 'vec3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ')';
++};
+ 
+-  bounds = bounds || [0,0,0,0]
++/**
++ * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {vec3} a The first vector.
++ * @param {vec3} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec3.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2];
++};
+ 
+-  bounds[0] = lox
+-  bounds[1] = loy
+-  bounds[2] = hix
+-  bounds[3] = hiy
++/**
++ * Returns whether or not the vectors have approximately the same elements in the same position.
++ *
++ * @param {vec3} a The first vector.
++ * @param {vec3} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec3.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2];
++    var b0 = b[0], b1 = b[1], b2 = b[2];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)));
++};
+ 
+-  var levels = pool.mallocInt32(n)
+-  var ptr = 0
++module.exports = vec3;
+ 
+-  function snapRec(x, y, diam, start, end, level) {
+-    var diam_2 = diam * 0.5
+-    var offset = start + 1
+-    var count = end - start
+-    weights[ptr] = count
+-    levels[ptr++] = level
+-    for(var i=0; i<2; ++i) {
+-      for(var j=0; j<2; ++j) {
+-        var nx = x+i*diam_2
+-        var ny = y+j*diam_2
+-        var nextOffset = partition(
+-            points
+-          , ids
+-          , offset
+-          , end
+-          , nx, ny
+-          , nx+diam_2, ny+diam_2)
+-        if(nextOffset === offset) {
+-          continue
+-        }
+-        if(nextOffset - offset >= Math.max(0.9 * count, 32)) {
+-          var mid = (end + start)>>>1
+-          snapRec(nx, ny, diam_2, offset, mid, level+1)
+-          offset = mid
+-        }
+-        snapRec(nx, ny, diam_2, offset, nextOffset, level+1)
+-        offset = nextOffset
+-      }
+-    }
+-  }
+-  snapRec(lox, loy, diam, 0, n, 0)
+-  sortLevels(levels, points, ids, weights, n)
++},{"./common.js":155}],163:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-  var lod         = []
+-  var lastLevel   = 0
+-  var prevOffset  = n
+-  for(var ptr=n-1; ptr>=0; --ptr) {
+-    points[2*ptr]   = (points[2*ptr]   - lox) * scaleX
+-    points[2*ptr+1] = (points[2*ptr+1] - loy) * scaleY
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-    var level = levels[ptr]
+-    if(level === lastLevel) {
+-      continue
+-    }
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-    lod.push(new SnapInterval(
+-      diam * Math.pow(0.5, level),
+-      ptr+1,
+-      prevOffset - (ptr+1)
+-    ))
+-    prevOffset = ptr+1
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-    lastLevel = level
+-  }
++var glMatrix = require("./common.js");
+ 
+-  lod.push(new SnapInterval(diam * Math.pow(0.5, level+1), 0, prevOffset))
+-  pool.free(levels)
++/**
++ * @class 4 Dimensional Vector
++ * @name vec4
++ */
++var vec4 = {};
+ 
+-  return lod
+-}
++/**
++ * Creates a new, empty vec4
++ *
++ * @returns {vec4} a new 4D vector
++ */
++vec4.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    return out;
++};
+ 
+-},{"./lib/sort":194,"typedarray-pool":458}],196:[function(require,module,exports){
+-'use strict'
++/**
++ * Creates a new vec4 initialized with values from an existing vector
++ *
++ * @param {vec4} a vector to clone
++ * @returns {vec4} a new 4D vector
++ */
++vec4.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var bsearch = require('binary-search-bounds')
+-var snapPoints = require('snap-points-2d')
++/**
++ * Creates a new vec4 initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {vec4} a new 4D vector
++ */
++vec4.fromValues = function(x, y, z, w) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    out[3] = w;
++    return out;
++};
+ 
+-var pool = require('typedarray-pool')
++/**
++ * Copy the values from one vec4 to another
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the source vector
++ * @returns {vec4} out
++ */
++vec4.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-var SHADERS = require('./lib/shader')
++/**
++ * Set the components of a vec4 to the given values
++ *
++ * @param {vec4} out the receiving vector
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {vec4} out
++ */
++vec4.set = function(out, x, y, z, w) {
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    out[3] = w;
++    return out;
++};
+ 
+-module.exports = createScatter2D
++/**
++ * Adds two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    return out;
++};
+ 
+-function Scatter2D(plot, offsetBuffer, pickBuffer, weightBuffer, shader, pickShader) {
+-  this.plot           = plot
+-  this.offsetBuffer   = offsetBuffer
+-  this.pickBuffer     = pickBuffer
+-  this.weightBuffer   = weightBuffer
+-  this.shader         = shader
+-  this.pickShader     = pickShader
+-  this.scales         = []
+-  this.size           = 12.0
+-  this.borderSize     = 1.0
+-  this.pointCount     = 0
+-  this.color          = [1,0,0,1]
+-  this.borderColor    = [0,0,0,1]
+-  this.bounds         = [Infinity,Infinity,-Infinity,-Infinity]
+-  this.pickOffset     = 0
+-  this.points         = null
+-  this.xCoords        = null
+-}
++/**
++ * Subtracts vector b from vector a
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    return out;
++};
+ 
+-var proto = Scatter2D.prototype
++/**
++ * Alias for {@link vec4.subtract}
++ * @function
++ */
++vec4.sub = vec4.subtract;
+ 
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.pickShader.dispose()
+-  this.offsetBuffer.dispose()
+-  this.pickBuffer.dispose()
+-  if(this.xCoords) {
+-    pool.free(this.xCoords)
+-  }
+-  this.plot.removeObject(this)
+-}
++/**
++ * Multiplies two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.multiply = function(out, a, b) {
++    out[0] = a[0] * b[0];
++    out[1] = a[1] * b[1];
++    out[2] = a[2] * b[2];
++    out[3] = a[3] * b[3];
++    return out;
++};
+ 
+-proto.update = function(options) {
+-  options = options || {}
++/**
++ * Alias for {@link vec4.multiply}
++ * @function
++ */
++vec4.mul = vec4.multiply;
+ 
+-  function dflt(opt, value) {
+-    if(opt in options) {
+-      return options[opt]
+-    }
+-    return value
+-  }
++/**
++ * Divides two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.divide = function(out, a, b) {
++    out[0] = a[0] / b[0];
++    out[1] = a[1] / b[1];
++    out[2] = a[2] / b[2];
++    out[3] = a[3] / b[3];
++    return out;
++};
++
++/**
++ * Alias for {@link vec4.divide}
++ * @function
++ */
++vec4.div = vec4.divide;
++
++/**
++ * Math.ceil the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to ceil
++ * @returns {vec4} out
++ */
++vec4.ceil = function (out, a) {
++    out[0] = Math.ceil(a[0]);
++    out[1] = Math.ceil(a[1]);
++    out[2] = Math.ceil(a[2]);
++    out[3] = Math.ceil(a[3]);
++    return out;
++};
++
++/**
++ * Math.floor the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to floor
++ * @returns {vec4} out
++ */
++vec4.floor = function (out, a) {
++    out[0] = Math.floor(a[0]);
++    out[1] = Math.floor(a[1]);
++    out[2] = Math.floor(a[2]);
++    out[3] = Math.floor(a[3]);
++    return out;
++};
+ 
+-  this.size         = dflt('size', 12.0)
+-  this.color        = dflt('color', [1,0,0,1]).slice()
+-  this.borderSize   = dflt('borderSize', 1)
+-  this.borderColor  = dflt('borderColor', [0,0,0,1]).slice()
++/**
++ * Returns the minimum of two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.min = function(out, a, b) {
++    out[0] = Math.min(a[0], b[0]);
++    out[1] = Math.min(a[1], b[1]);
++    out[2] = Math.min(a[2], b[2]);
++    out[3] = Math.min(a[3], b[3]);
++    return out;
++};
+ 
+-  //Update point data
+-  if(this.xCoords) {
+-    pool.free(this.xCoords)
+-  }
+-  var data          = options.positions
+-  var packed        = pool.mallocFloat32(data.length)
+-  var packedId      = pool.mallocInt32(data.length>>>1)
+-  packed.set(data)
+-  var packedW       = pool.mallocFloat32(data.length)
+-  this.points       = data
+-  this.scales       = snapPoints(packed, packedId, packedW, this.bounds)
+-  this.offsetBuffer.update(packed)
+-  this.pickBuffer.update(packedId)
+-  this.weightBuffer.update(packedW)
+-  var xCoords      = pool.mallocFloat32(data.length>>>1)
+-  for(var i=0,j=0; i<data.length; i+=2,++j) {
+-    xCoords[j] = packed[i]
+-  }
+-  pool.free(packedId)
+-  pool.free(packed)
+-  pool.free(packedW)
++/**
++ * Returns the maximum of two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.max = function(out, a, b) {
++    out[0] = Math.max(a[0], b[0]);
++    out[1] = Math.max(a[1], b[1]);
++    out[2] = Math.max(a[2], b[2]);
++    out[3] = Math.max(a[3], b[3]);
++    return out;
++};
+ 
+-  this.xCoords = xCoords
++/**
++ * Math.round the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to round
++ * @returns {vec4} out
++ */
++vec4.round = function (out, a) {
++    out[0] = Math.round(a[0]);
++    out[1] = Math.round(a[1]);
++    out[2] = Math.round(a[2]);
++    out[3] = Math.round(a[3]);
++    return out;
++};
+ 
+-  this.pointCount = data.length >>> 1
+-  this.pickOffset = 0
+-}
++/**
++ * Scales a vec4 by a scalar number
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {vec4} out
++ */
++vec4.scale = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    return out;
++};
+ 
+-proto.drawPick = (function() {
+-  var MATRIX = [1,0,0,
+-                0,1,0,
+-                0,0,1]
+-  var PICK_VEC4 = [0,0,0,0]
+-return function(pickOffset) {
+-  var plot          = this.plot
+-  var shader        = this.pickShader
+-  var scales        = this.scales
+-  var offsetBuffer  = this.offsetBuffer
+-  var pickBuffer    = this.pickBuffer
+-  var bounds        = this.bounds
+-  var size          = this.size
+-  var borderSize    = this.borderSize
+-  var gl            = plot.gl
+-  var pixelRatio    = plot.pickPixelRatio
+-  var viewBox       = plot.viewBox
+-  var dataBox       = plot.dataBox
++/**
++ * Adds two vec4's after scaling the second operand by a scalar value
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @param {Number} scale the amount to scale b by before adding
++ * @returns {vec4} out
++ */
++vec4.scaleAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    return out;
++};
+ 
+-  if(this.pointCount === 0) {
+-    return pickOffset
+-  }
++/**
++ * Calculates the euclidian distance between two vec4's
++ *
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {Number} distance between a and b
++ */
++vec4.distance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2],
++        w = b[3] - a[3];
++    return Math.sqrt(x*x + y*y + z*z + w*w);
++};
+ 
+-  var boundX  = bounds[2] - bounds[0]
+-  var boundY  = bounds[3] - bounds[1]
+-  var dataX   = dataBox[2] - dataBox[0]
+-  var dataY   = dataBox[3] - dataBox[1]
+-  var screenX = (viewBox[2] - viewBox[0]) * pixelRatio / plot.pixelRatio
+-  var screenY = (viewBox[3] - viewBox[1]) * pixelRatio / plot.pixelRatio
++/**
++ * Alias for {@link vec4.distance}
++ * @function
++ */
++vec4.dist = vec4.distance;
+ 
+-  var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
+-  var targetScale = pixelSize
++/**
++ * Calculates the squared euclidian distance between two vec4's
++ *
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {Number} squared distance between a and b
++ */
++vec4.squaredDistance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2],
++        w = b[3] - a[3];
++    return x*x + y*y + z*z + w*w;
++};
+ 
++/**
++ * Alias for {@link vec4.squaredDistance}
++ * @function
++ */
++vec4.sqrDist = vec4.squaredDistance;
+ 
+-  MATRIX[0] = 2.0 * boundX / dataX
+-  MATRIX[4] = 2.0 * boundY / dataY
+-  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++/**
++ * Calculates the length of a vec4
++ *
++ * @param {vec4} a vector to calculate length of
++ * @returns {Number} length of a
++ */
++vec4.length = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2],
++        w = a[3];
++    return Math.sqrt(x*x + y*y + z*z + w*w);
++};
+ 
+-  this.pickOffset = pickOffset
+-  PICK_VEC4[0] = ( pickOffset      & 0xff)
+-  PICK_VEC4[1] = ((pickOffset>>8)  & 0xff)
+-  PICK_VEC4[2] = ((pickOffset>>16) & 0xff)
+-  PICK_VEC4[3] = ((pickOffset>>24) & 0xff)
++/**
++ * Alias for {@link vec4.length}
++ * @function
++ */
++vec4.len = vec4.length;
+ 
+-  shader.bind()
+-  shader.uniforms.matrix      = MATRIX
+-  shader.uniforms.color       = this.color
+-  shader.uniforms.borderColor = this.borderColor
+-  shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
+-  shader.uniforms.pickOffset  = PICK_VEC4
++/**
++ * Calculates the squared length of a vec4
++ *
++ * @param {vec4} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ */
++vec4.squaredLength = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2],
++        w = a[3];
++    return x*x + y*y + z*z + w*w;
++};
+ 
+-  if(this.borderSize === 0) {
+-    shader.uniforms.centerFraction = 2.0;
+-  } else {
+-    shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
+-  }
++/**
++ * Alias for {@link vec4.squaredLength}
++ * @function
++ */
++vec4.sqrLen = vec4.squaredLength;
+ 
+-  offsetBuffer.bind()
+-  shader.attributes.position.pointer()
+-  pickBuffer.bind()
+-  shader.attributes.pickId.pointer(gl.UNSIGNED_BYTE)
++/**
++ * Negates the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to negate
++ * @returns {vec4} out
++ */
++vec4.negate = function(out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    out[3] = -a[3];
++    return out;
++};
+ 
+-  var xCoords = this.xCoords
+-  var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
+-  var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
++/**
++ * Returns the inverse of the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to invert
++ * @returns {vec4} out
++ */
++vec4.inverse = function(out, a) {
++  out[0] = 1.0 / a[0];
++  out[1] = 1.0 / a[1];
++  out[2] = 1.0 / a[2];
++  out[3] = 1.0 / a[3];
++  return out;
++};
+ 
+-  for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
+-    var lod     = scales[scaleNum]
+-    if(lod.pixelSize < pixelSize && scaleNum > 1) {
+-      continue
++/**
++ * Normalize a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to normalize
++ * @returns {vec4} out
++ */
++vec4.normalize = function(out, a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2],
++        w = a[3];
++    var len = x*x + y*y + z*z + w*w;
++    if (len > 0) {
++        len = 1 / Math.sqrt(len);
++        out[0] = x * len;
++        out[1] = y * len;
++        out[2] = z * len;
++        out[3] = w * len;
+     }
++    return out;
++};
+ 
+-    var intervalStart = lod.offset
+-    var intervalEnd   = lod.count + intervalStart
+-
+-    var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
+-    var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
++/**
++ * Calculates the dot product of two vec4's
++ *
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {Number} dot product of a and b
++ */
++vec4.dot = function (a, b) {
++    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
++};
+ 
+-    if(endOffset > startOffset) {
+-      gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
+-    }
+-  }
++/**
++ * Performs a linear interpolation between two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec4} out
++ */
++vec4.lerp = function (out, a, b, t) {
++    var ax = a[0],
++        ay = a[1],
++        az = a[2],
++        aw = a[3];
++    out[0] = ax + t * (b[0] - ax);
++    out[1] = ay + t * (b[1] - ay);
++    out[2] = az + t * (b[2] - az);
++    out[3] = aw + t * (b[3] - aw);
++    return out;
++};
+ 
+-  return pickOffset + this.pointCount
+-}
+-})()
++/**
++ * Generates a random vector with the given scale
++ *
++ * @param {vec4} out the receiving vector
++ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
++ * @returns {vec4} out
++ */
++vec4.random = function (out, scale) {
++    scale = scale || 1.0;
+ 
+-proto.draw = (function() {
+-  var MATRIX = [1, 0, 0,
+-                0, 1, 0,
+-                0, 0, 1]
++    //TODO: This is a pretty awful way of doing this. Find something better.
++    out[0] = glMatrix.RANDOM();
++    out[1] = glMatrix.RANDOM();
++    out[2] = glMatrix.RANDOM();
++    out[3] = glMatrix.RANDOM();
++    vec4.normalize(out, out);
++    vec4.scale(out, out, scale);
++    return out;
++};
+ 
+-  return function() {
+-    var plot          = this.plot
+-    var shader        = this.shader
+-    var scales        = this.scales
+-    var offsetBuffer  = this.offsetBuffer
+-    var bounds        = this.bounds
+-    var size          = this.size
+-    var borderSize    = this.borderSize
+-    var gl            = plot.gl
+-    var pixelRatio    = plot.pixelRatio
+-    var viewBox       = plot.viewBox
+-    var dataBox       = plot.dataBox
++/**
++ * Transforms the vec4 with a mat4.
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec4} out
++ */
++vec4.transformMat4 = function(out, a, m) {
++    var x = a[0], y = a[1], z = a[2], w = a[3];
++    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
++    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
++    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
++    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
++    return out;
++};
+ 
+-    if(this.pointCount === 0) {
+-      return
+-    }
++/**
++ * Transforms the vec4 with a quat
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to transform
++ * @param {quat} q quaternion to transform with
++ * @returns {vec4} out
++ */
++vec4.transformQuat = function(out, a, q) {
++    var x = a[0], y = a[1], z = a[2],
++        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+ 
+-    var boundX  = bounds[2] - bounds[0]
+-    var boundY  = bounds[3] - bounds[1]
+-    var dataX   = dataBox[2] - dataBox[0]
+-    var dataY   = dataBox[3] - dataBox[1]
+-    var screenX = viewBox[2] - viewBox[0]
+-    var screenY = viewBox[3] - viewBox[1]
++        // calculate quat * vec
++        ix = qw * x + qy * z - qz * y,
++        iy = qw * y + qz * x - qx * z,
++        iz = qw * z + qx * y - qy * x,
++        iw = -qx * x - qy * y - qz * z;
+ 
+-    var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
+-    var targetScale = pixelSize
++    // calculate result * inverse quat
++    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
++    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
++    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
++    out[3] = a[3];
++    return out;
++};
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++/**
++ * Perform some operation over an array of vec4s.
++ *
++ * @param {Array} a the array of vectors to iterate over
++ * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed
++ * @param {Number} offset Number of elements to skip at the beginning of the array
++ * @param {Number} count Number of vec4s to iterate over. If 0 iterates over entire array
++ * @param {Function} fn Function to call for each vector in the array
++ * @param {Object} [arg] additional argument to pass to fn
++ * @returns {Array} a
++ * @function
++ */
++vec4.forEach = (function() {
++    var vec = vec4.create();
+ 
+-    shader.bind()
+-    shader.uniforms.matrix      = MATRIX
+-    shader.uniforms.color       = this.color
+-    shader.uniforms.borderColor = this.borderColor
+-    shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
+-    shader.uniforms.useWeight   = 1
++    return function(a, stride, offset, count, fn, arg) {
++        var i, l;
++        if(!stride) {
++            stride = 4;
++        }
+ 
+-    if(this.borderSize === 0) {
+-      shader.uniforms.centerFraction = 2.0;
+-    } else {
+-      shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
+-    }
++        if(!offset) {
++            offset = 0;
++        }
++        
++        if(count) {
++            l = Math.min((count * stride) + offset, a.length);
++        } else {
++            l = a.length;
++        }
+ 
+-    offsetBuffer.bind()
+-    shader.attributes.position.pointer()
++        for(i = offset; i < l; i += stride) {
++            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2]; vec[3] = a[i+3];
++            fn(vec, vec, arg);
++            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2]; a[i+3] = vec[3];
++        }
++        
++        return a;
++    };
++})();
+ 
+-    this.weightBuffer.bind()
+-    shader.attributes.weight.pointer()
++/**
++ * Returns a string representation of a vector
++ *
++ * @param {vec4} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++vec4.str = function (a) {
++    return 'vec4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
++};
+ 
+-    var xCoords = this.xCoords
+-    var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
+-    var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
++/**
++ * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {vec4} a The first vector.
++ * @param {vec4} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec4.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
++};
+ 
+-    var firstLevel = true
++/**
++ * Returns whether or not the vectors have approximately the same elements in the same position.
++ *
++ * @param {vec4} a The first vector.
++ * @param {vec4} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec4.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
++};
+ 
+-    for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
+-      var lod     = scales[scaleNum]
+-      if(lod.pixelSize < pixelSize && scaleNum > 1) {
+-        continue
+-      }
++module.exports = vec4;
+ 
+-      var intervalStart = lod.offset
+-      var intervalEnd   = lod.count + intervalStart
++},{"./common.js":155}],164:[function(require,module,exports){
++'use strict'
+ 
+-      var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
+-      var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
++var barycentric            = require('barycentric')
++var closestPointToTriangle = require('polytope-closest-point/lib/closest_point_2d.js')
+ 
+-      if(endOffset > startOffset) {
+-        gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
+-      }
++module.exports = closestPointToPickLocation
+ 
+-      if(firstLevel) {
+-        firstLevel = false
+-        shader.uniforms.useWeight = 0
+-      }
++function xformMatrix(m, v) {
++  var out = [0,0,0,0]
++  for(var i=0; i<4; ++i) {
++    for(var j=0; j<4; ++j) {
++      out[j] += m[4*i + j] * v[i]
+     }
+   }
+-})()
++  return out
++}
+ 
+-proto.pick = function(x, y, value) {
+-  var pickOffset = this.pickOffset
+-  var pointCount = this.pointCount
+-  if(value < pickOffset || value >= pickOffset + pointCount) {
+-    return null
+-  }
+-  var pointId = value - pickOffset
+-  var points = this.points
+-  return {
+-    object:  this,
+-    pointId: pointId,
+-    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
++function projectVertex(v, model, view, projection, resolution) {
++  var p = xformMatrix(projection,
++            xformMatrix(view,
++              xformMatrix(model, [v[0], v[1], v[2], 1])))
++  for(var i=0; i<3; ++i) {
++    p[i] /= p[3]
+   }
++  return [ 0.5 * resolution[0] * (1.0+p[0]), 0.5 * resolution[1] * (1.0-p[1]) ]
+ }
+ 
+-function createScatter2D(plot, options) {
+-  var gl     = plot.gl
+-  var buffer = createBuffer(gl)
+-  var pickBuffer = createBuffer(gl)
+-  var weightBuffer = createBuffer(gl)
+-  var shader = createShader(gl, SHADERS.pointVertex, SHADERS.pointFragment)
+-  var pickShader = createShader(gl, SHADERS.pickVertex, SHADERS.pickFragment)
+-
+-  var result = new Scatter2D(
+-    plot, buffer, pickBuffer, weightBuffer, shader, pickShader)
+-  result.update(options)
+-
+-  //Register with plot
+-  plot.addObject(result)
++function barycentricCoord(simplex, point) {
++  if(simplex.length === 2) {
++    var d0 = 0.0
++    var d1 = 0.0
++    for(var i=0; i<2; ++i) {
++      d0 += Math.pow(point[i] - simplex[0][i], 2)
++      d1 += Math.pow(point[i] - simplex[1][i], 2)
++    }
++    d0 = Math.sqrt(d0)
++    d1 = Math.sqrt(d1)
++    if(d0+d1 < 1e-6) {
++      return [1,0]
++    }
++    return [d1/(d0+d1),d0/(d1+d0)]
++  } else if(simplex.length === 3) {
++    var closestPoint = [0,0]
++    closestPointToTriangle(simplex[0], simplex[1], simplex[2], point, closestPoint)
++    return barycentric(simplex, closestPoint)
++  }
++  return []
++}
+ 
++function interpolate(simplex, weights) {
++  var result = [0,0,0]
++  for(var i=0; i<simplex.length; ++i) {
++    var p = simplex[i]
++    var w = weights[i]
++    for(var j=0; j<3; ++j) {
++      result[j] += w * p[j]
++    }
++  }
+   return result
+ }
+ 
+-},{"./lib/shader":192,"binary-search-bounds":193,"gl-buffer":124,"gl-shader":203,"snap-points-2d":195,"typedarray-pool":458}],197:[function(require,module,exports){
+-"use strict"
+-
+-var vectorizeText = require("vectorize-text")
+-
+-module.exports = getGlyph
+-
+-var GLYPH_CACHE = {}
+-
+-function getGlyph(symbol, font) {
+-  var fontCache = GLYPH_CACHE[font]
+-  if(!fontCache) {
+-    fontCache = GLYPH_CACHE[font] = {}
++function closestPointToPickLocation(simplex, pixelCoord, model, view, projection, resolution) {
++  if(simplex.length === 1) {
++    return [0, simplex[0].slice()]
+   }
+-  if(symbol in fontCache) {
+-    return fontCache[symbol]
++  var simplex2D = new Array(simplex.length)
++  for(var i=0; i<simplex.length; ++i) {
++    simplex2D[i] = projectVertex(simplex[i], model, view, projection, resolution);
+   }
+ 
+-  //Get line and triangle meshes for glyph
+-  var lineSymbol = vectorizeText(symbol, {
+-      textAlign: "center",
+-      textBaseline: "middle",
+-      lineHeight: 1.0,
+-      font: font
+-    }) 
+-  var triSymbol = vectorizeText(symbol, {
+-      triangles: true,
+-      textAlign: "center",
+-      textBaseline: "middle",
+-      lineHeight: 1.0,
+-      font: font
+-    })
+-
+-  //Calculate bounding box
+-  var bounds = [[Infinity,Infinity], [-Infinity,-Infinity]]
+-  for(var i=0; i<lineSymbol.positions.length; ++i) {
+-    var p = lineSymbol.positions[i]
++  var closestIndex = 0
++  var closestDist  = Infinity
++  for(var i=0; i<simplex2D.length; ++i) {
++    var d2 = 0.0
+     for(var j=0; j<2; ++j) {
+-      bounds[0][j] = Math.min(bounds[0][j], p[j])
+-      bounds[1][j] = Math.max(bounds[1][j], p[j])
++      d2 += Math.pow(simplex2D[i][j] - pixelCoord[j], 2)
++    }
++    if(d2 < closestDist) {
++      closestDist  = d2
++      closestIndex = i
+     }
+   }
+ 
+-  //Save cached symbol
+-  return fontCache[symbol] = [triSymbol, lineSymbol, bounds]
++  var weights = barycentricCoord(simplex2D, pixelCoord)
++  var s = 0.0
++  for(var i=0; i<3; ++i) {
++    if(weights[i] < -0.001 ||
++       weights[i] > 1.0001) {
++      return null
++    }
++    s += weights[i]
++  }
++  if(Math.abs(s - 1.0) > 0.001) {
++    return null
++  }
++  return [closestIndex, interpolate(simplex, weights), weights]
+ }
+-},{"vectorize-text":460}],198:[function(require,module,exports){
+-var createShaderWrapper = require('gl-shader')
++},{"barycentric":31,"polytope-closest-point/lib/closest_point_2d.js":402}],165:[function(require,module,exports){
+ 
+ 
+-var perspectiveVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\n\nuniform vec4 highlightId;\nuniform float highlightScale;\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   || \n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = 1.0;\n    if(distance(highlightId, id) < 0.0001) {\n      scale = highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1);\n    vec4 viewPosition = view * worldPosition;\n    viewPosition = viewPosition / viewPosition.w;\n    vec4 clipPosition = projection * (viewPosition + scale * vec4(glyph.x, -glyph.y, 0, 0));\n    \n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
+-var orthographicVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float highlightScale, pixelRatio;\nuniform vec4 highlightId;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = pixelRatio;\n    if(distance(highlightId.bgr, id.bgr) < 0.001) {\n      scale *= highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1.0);\n    vec4 viewPosition = view * worldPosition;\n    vec4 clipPosition = projection * viewPosition;\n    clipPosition /= clipPosition.w;\n    \n    gl_Position = clipPosition + vec4(screenSize * scale * vec2(glyph.x, -glyph.y), 0.0, 0.0);\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
+-var projectionVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform float highlightScale;\nuniform vec4 highlightId;\nuniform vec3 axes[2];\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float scale, pixelRatio;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   ||\n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float lscale = pixelRatio * scale;\n    if(distance(highlightId, id) < 0.0001) {\n      lscale *= highlightScale;\n    }\n\n    vec4 clipCenter   = projection * view * model * vec4(position, 1);\n    vec3 dataPosition = position + 0.5*lscale*(axes[0] * glyph.x + axes[1] * glyph.y) * clipCenter.w * screenSize.y;\n    vec4 clipPosition = projection * view * model * vec4(dataPosition, 1);\n\n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = dataPosition;\n  }\n}\n"
+-var drawFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float opacity;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   ||\n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = interpColor * opacity;\n  }\n}\n"
+-var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float pickGroup;\n\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   || \n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = vec4(pickGroup, pickId.bgr);\n  }\n}"
+-
+-var ATTRIBUTES = [
+-  {name: 'position', type: 'vec3'},
+-  {name: 'color', type: 'vec4'},
+-  {name: 'glyph', type: 'vec2'},
+-  {name: 'id', type: 'vec4'}
+-]
+-
+-var perspective = {
+-    vertex: perspectiveVertSrc,
+-    fragment: drawFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  ortho = {
+-    vertex: orthographicVertSrc,
+-    fragment: drawFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  project = {
+-    vertex: projectionVertSrc,
+-    fragment: drawFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  pickPerspective = {
+-    vertex: perspectiveVertSrc,
+-    fragment: pickFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  pickOrtho = {
+-    vertex: orthographicVertSrc,
+-    fragment: pickFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  pickProject = {
+-    vertex: projectionVertSrc,
+-    fragment: pickFragSrc,
+-    attributes: ATTRIBUTES
+-  }
+-
+-function createShader(gl, src) {
+-  var shader = createShaderWrapper(gl, src)
+-  var attr = shader.attributes
+-  attr.position.location = 0
+-  attr.color.location = 1
+-  attr.glyph.location = 2
+-  attr.id.location = 3
+-  return shader
+-}
++var triVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, normal;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model\n           , view\n           , projection;\nuniform vec3 eyePosition\n           , lightPosition;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec4 m_position  = model * vec4(position, 1.0);\n  vec4 t_position  = view * m_position;\n  gl_Position      = projection * t_position;\n  f_color          = color;\n  f_normal         = normal;\n  f_data           = position;\n  f_eyeDirection   = eyePosition   - position;\n  f_lightDirection = lightPosition - position;\n  f_uv             = uv;\n}"
++var triFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat cookTorranceSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness,\n  float fresnel) {\n\n  float VdotN = max(dot(viewDirection, surfaceNormal), 0.0);\n  float LdotN = max(dot(lightDirection, surfaceNormal), 0.0);\n\n  //Half angle vector\n  vec3 H = normalize(lightDirection + viewDirection);\n\n  //Geometric term\n  float NdotH = max(dot(surfaceNormal, H), 0.0);\n  float VdotH = max(dot(viewDirection, H), 0.000001);\n  float LdotH = max(dot(lightDirection, H), 0.000001);\n  float G1 = (2.0 * NdotH * VdotN) / VdotH;\n  float G2 = (2.0 * NdotH * LdotN) / LdotH;\n  float G = min(1.0, min(G1, G2));\n  \n  //Distribution term\n  float D = beckmannDistribution_2_0(NdotH, roughness);\n\n  //Fresnel term\n  float F = pow(1.0 - VdotN, fresnel);\n\n  //Multiply terms and done\n  return  G * F * D / max(3.14159265 * VdotN, 0.000001);\n}\n\n\n\nuniform vec3 clipBounds[2];\nuniform float roughness\n            , fresnel\n            , kambient\n            , kdiffuse\n            , kspecular\n            , opacity;\nuniform sampler2D texture;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(f_normal);\n  vec3 L = normalize(f_lightDirection);\n  vec3 V = normalize(f_eyeDirection);\n  \n  if(!gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = cookTorranceSpecular_1_1(L, V, N, roughness, fresnel);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = f_color * texture2D(texture, f_uv);\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = litColor * opacity;\n}"
++var edgeVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model, view, projection;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_color = color;\n  f_data  = position;\n  f_uv    = uv;\n}"
++var edgeFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 clipBounds[2];\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
++var pointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\nattribute float pointSize;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position = projection * view * model * vec4(position, 1.0);\n  }\n  gl_PointSize = pointSize;\n  f_color = color;\n  f_uv = uv;\n}"
++var pointFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec2 pointR = gl_PointCoord.xy - vec2(0.5,0.5);\n  if(dot(pointR, pointR) > 0.25) {\n    discard;\n  }\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
++var pickVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_id        = id;\n  f_position  = position;\n}"
++var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3  clipBounds[2];\nuniform float pickId;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(f_position, clipBounds[0])) || \n     any(greaterThan(f_position, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId, f_id.xyz);\n}"
++var pickPointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3  position;\nattribute float pointSize;\nattribute vec4  id;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position  = projection * view * model * vec4(position, 1.0);\n    gl_PointSize = pointSize;\n  }\n  f_id         = id;\n  f_position   = position;\n}"
++var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n}"
++var contourFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 contourColor;\n\nvoid main() {\n  gl_FragColor = vec4(contourColor,1);\n}\n"
+ 
+-exports.createPerspective = function(gl) {
+-  return createShader(gl, perspective)
++exports.meshShader = {
++  vertex:   triVertSrc,
++  fragment: triFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'normal', type: 'vec3'},
++    {name: 'color', type: 'vec4'},
++    {name: 'uv', type: 'vec2'}
++  ]
+ }
+-exports.createOrtho = function(gl) {
+-  return createShader(gl, ortho)
++exports.wireShader = {
++  vertex:   edgeVertSrc,
++  fragment: edgeFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'color', type: 'vec4'},
++    {name: 'uv', type: 'vec2'}
++  ]
+ }
+-exports.createProject = function(gl) {
+-  return createShader(gl, project)
++exports.pointShader = {
++  vertex:   pointVertSrc,
++  fragment: pointFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'color', type: 'vec4'},
++    {name: 'uv', type: 'vec2'},
++    {name: 'pointSize', type: 'float'}
++  ]
+ }
+-exports.createPickPerspective = function(gl) {
+-  return createShader(gl, pickPerspective)
++exports.pickShader = {
++  vertex:   pickVertSrc,
++  fragment: pickFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'id', type: 'vec4'}
++  ]
+ }
+-exports.createPickOrtho = function(gl) {
+-  return createShader(gl, pickOrtho)
++exports.pointPickShader = {
++  vertex:   pickPointVertSrc,
++  fragment: pickFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'pointSize', type: 'float'},
++    {name: 'id', type: 'vec4'}
++  ]
+ }
+-exports.createPickProject = function(gl) {
+-  return createShader(gl, pickProject)
++exports.contourShader = {
++  vertex:   contourVertSrc,
++  fragment: contourFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'}
++  ]
+ }
+ 
+-},{"gl-shader":203}],199:[function(require,module,exports){
++},{}],166:[function(require,module,exports){
+ 'use strict'
+ 
++var DEFAULT_VERTEX_NORMALS_EPSILON = 1e-6; // may be too large if triangles are very small
++var DEFAULT_FACE_NORMALS_EPSILON = 1e-6;
++
++var createShader  = require('gl-shader')
+ var createBuffer  = require('gl-buffer')
+ var createVAO     = require('gl-vao')
++var createTexture = require('gl-texture2d')
++var normals       = require('normals')
++var multiply      = require('gl-mat4/multiply')
++var invert        = require('gl-mat4/invert')
++var ndarray       = require('ndarray')
++var colormap      = require('colormap')
++var getContour    = require('simplicial-complex-contour')
+ var pool          = require('typedarray-pool')
+-var mat4mult      = require('gl-mat4/multiply')
+ var shaders       = require('./lib/shaders')
+-var getGlyph      = require('./lib/glyphs')
++var closestPoint  = require('./lib/closest-point')
+ 
+-var IDENTITY = [1,0,0,0,
+-                0,1,0,0,
+-                0,0,1,0,
+-                0,0,0,1]
++var meshShader    = shaders.meshShader
++var wireShader    = shaders.wireShader
++var pointShader   = shaders.pointShader
++var pickShader    = shaders.pickShader
++var pointPickShader = shaders.pointPickShader
++var contourShader = shaders.contourShader
+ 
+-module.exports = createPointCloud
++var identityMatrix = [
++  1,0,0,0,
++  0,1,0,0,
++  0,0,1,0,
++  0,0,0,1]
+ 
+-function transformMat4(x, m) {
+-  var x0 = x[0]
+-  var x1 = x[1]
+-  var x2 = x[2]
+-  var x3 = x[3]
+-  x[0] = m[0] * x0 + m[4] * x1 + m[8]  * x2 + m[12] * x3
+-  x[1] = m[1] * x0 + m[5] * x1 + m[9]  * x2 + m[13] * x3
+-  x[2] = m[2] * x0 + m[6] * x1 + m[10] * x2 + m[14] * x3
+-  x[3] = m[3] * x0 + m[7] * x1 + m[11] * x2 + m[15] * x3
+-  return x
++function SimplicialMesh(gl
++  , texture
++  , triShader
++  , lineShader
++  , pointShader
++  , pickShader
++  , pointPickShader
++  , contourShader
++  , trianglePositions
++  , triangleIds
++  , triangleColors
++  , triangleUVs
++  , triangleNormals
++  , triangleVAO
++  , edgePositions
++  , edgeIds
++  , edgeColors
++  , edgeUVs
++  , edgeVAO
++  , pointPositions
++  , pointIds
++  , pointColors
++  , pointUVs
++  , pointSizes
++  , pointVAO
++  , contourPositions
++  , contourVAO) {
++
++  this.gl                = gl
++  this.cells             = []
++  this.positions         = []
++  this.intensity         = []
++  this.texture           = texture
++  this.dirty             = true
++
++  this.triShader         = triShader
++  this.lineShader        = lineShader
++  this.pointShader       = pointShader
++  this.pickShader        = pickShader
++  this.pointPickShader   = pointPickShader
++  this.contourShader     = contourShader
++
++  this.trianglePositions = trianglePositions
++  this.triangleColors    = triangleColors
++  this.triangleNormals   = triangleNormals
++  this.triangleUVs       = triangleUVs
++  this.triangleIds       = triangleIds
++  this.triangleVAO       = triangleVAO
++  this.triangleCount     = 0
++
++  this.lineWidth         = 1
++  this.edgePositions     = edgePositions
++  this.edgeColors        = edgeColors
++  this.edgeUVs           = edgeUVs
++  this.edgeIds           = edgeIds
++  this.edgeVAO           = edgeVAO
++  this.edgeCount         = 0
++
++  this.pointPositions    = pointPositions
++  this.pointColors       = pointColors
++  this.pointUVs          = pointUVs
++  this.pointSizes        = pointSizes
++  this.pointIds          = pointIds
++  this.pointVAO          = pointVAO
++  this.pointCount        = 0
++
++  this.contourLineWidth  = 1
++  this.contourPositions  = contourPositions
++  this.contourVAO        = contourVAO
++  this.contourCount      = 0
++  this.contourColor      = [0,0,0]
++  this.contourEnable     = true
++
++  this.pickId            = 1
++  this.bounds            = [
++    [ Infinity, Infinity, Infinity],
++    [-Infinity,-Infinity,-Infinity] ]
++  this.clipBounds        = [
++    [-Infinity,-Infinity,-Infinity],
++    [ Infinity, Infinity, Infinity] ]
++
++  this.lightPosition = [1e5, 1e5, 0]
++  this.ambientLight  = 0.8
++  this.diffuseLight  = 0.8
++  this.specularLight = 2.0
++  this.roughness     = 0.5
++  this.fresnel       = 1.5
++
++  this.opacity       = 1.0
++
++  this._model       = identityMatrix
++  this._view        = identityMatrix
++  this._projection  = identityMatrix
++  this._resolution  = [1,1]
+ }
+ 
+-function project(p, v, m, x) {
+-  transformMat4(x, x, m)
+-  transformMat4(x, x, v)
+-  return transformMat4(x, x, p)
++var proto = SimplicialMesh.prototype
++
++proto.isOpaque = function() {
++  return this.opacity >= 1
+ }
+ 
+-function clampVec(v) {
+-  var result = new Array(3)
+-  for(var i=0; i<3; ++i) {
+-    result[i] = Math.min(Math.max(v[i], -1e8), 1e8)
++proto.isTransparent = function() {
++  return this.opacity < 1
++}
++
++proto.pickSlots = 1
++
++proto.setPickBase = function(id) {
++  this.pickId = id
++}
++
++function genColormap(param) {
++  var colors = colormap({
++      colormap: param
++    , nshades:  256
++    , format:  'rgba'
++  })
++
++  var result = new Uint8Array(256*4)
++  for(var i=0; i<256; ++i) {
++    var c = colors[i]
++    for(var j=0; j<3; ++j) {
++      result[4*i+j] = c[j]
++    }
++    result[4*i+3] = c[3]*255
++  }
++
++  return ndarray(result, [256,256,4], [4,0,1])
++}
++
++function unpackIntensity(cells, numVerts, cellIntensity) {
++  var result = new Array(numVerts)
++  for(var i=0; i<numVerts; ++i) {
++    result[i] = 0
++  }
++  var numCells = cells.length
++  for(var i=0; i<numCells; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      result[c[j]] = cellIntensity[i]
++    }
+   }
+   return result
+ }
+ 
+-function ScatterPlotPickResult(index, position) {
+-  this.index = index
+-  this.dataCoordinate = this.position = position
++function takeZComponent(array) {
++  var n = array.length
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = array[i][2]
++  }
++  return result
++}
++
++proto.highlight = function(selection) {
++  if(!selection || !this.contourEnable) {
++    this.contourCount = 0
++    return
++  }
++  var level = getContour(this.cells, this.intensity, selection.intensity)
++  var cells         = level.cells
++  var vertexIds     = level.vertexIds
++  var vertexWeights = level.vertexWeights
++  var numCells = cells.length
++  var result = pool.mallocFloat32(2 * 3 * numCells)
++  var ptr = 0
++  for(var i=0; i<numCells; ++i) {
++    var c = cells[i]
++    for(var j=0; j<2; ++j) {
++      var v = c[0]
++      if(c.length === 2) {
++        v = c[j]
++      }
++      var a = vertexIds[v][0]
++      var b = vertexIds[v][1]
++      var w = vertexWeights[v]
++      var wi = 1.0 - w
++      var pa = this.positions[a]
++      var pb = this.positions[b]
++      for(var k=0; k<3; ++k) {
++        result[ptr++] = w * pa[k] + wi * pb[k]
++      }
++    }
++  }
++  this.contourCount = (ptr / 3)|0
++  this.contourPositions.update(result.subarray(0, ptr))
++  pool.free(result)
+ }
+ 
+-function PointCloud(
+-  gl,
+-  shader,
+-  orthoShader,
+-  projectShader,
+-  pointBuffer,
+-  colorBuffer,
+-  glyphBuffer,
+-  idBuffer,
+-  vao,
+-  pickPerspectiveShader,
+-  pickOrthoShader,
+-  pickProjectShader) {
+-
+-  this.gl              = gl
+-
+-  this.pixelRatio      = 1
+-
+-  this.shader          = shader
+-  this.orthoShader     = orthoShader
+-  this.projectShader   = projectShader
+-
+-  this.pointBuffer     = pointBuffer
+-  this.colorBuffer     = colorBuffer
+-  this.glyphBuffer     = glyphBuffer
+-  this.idBuffer        = idBuffer
+-  this.vao             = vao
+-  this.vertexCount     = 0
+-  this.lineVertexCount = 0
++proto.update = function(params) {
++  params = params || {}
++  var gl = this.gl
+ 
+-  this.opacity         = 1.0
++  this.dirty = true
+ 
+-  this.lineWidth       = 0
+-  this.projectScale    = [2.0/3.0, 2.0/3.0, 2.0/3.0]
+-  this.projectOpacity  = [1,1,1]
++  if('contourEnable' in params) {
++    this.contourEnable = params.contourEnable
++  }
++  if('contourColor' in params) {
++    this.contourColor = params.contourColor
++  }
++  if('lineWidth' in params) {
++    this.lineWidth = params.lineWidth
++  }
++  if('lightPosition' in params) {
++    this.lightPosition = params.lightPosition
++  }
++  if('opacity' in params) {
++    this.opacity = params.opacity
++  }
++  if('ambient' in params) {
++    this.ambientLight  = params.ambient
++  }
++  if('diffuse' in params) {
++    this.diffuseLight = params.diffuse
++  }
++  if('specular' in params) {
++    this.specularLight = params.specular
++  }
++  if('roughness' in params) {
++    this.roughness = params.roughness
++  }
++  if('fresnel' in params) {
++    this.fresnel = params.fresnel
++  }
+ 
+-  this.pickId                = 0
+-  this.pickPerspectiveShader = pickPerspectiveShader
+-  this.pickOrthoShader       = pickOrthoShader
+-  this.pickProjectShader     = pickProjectShader
+-  this.points                = []
++  if(params.texture) {
++    this.texture.dispose()
++    this.texture = createTexture(gl, params.texture)
++  } else if (params.colormap) {
++    this.texture.shape = [256,256]
++    this.texture.minFilter = gl.LINEAR_MIPMAP_LINEAR
++    this.texture.magFilter = gl.LINEAR
++    this.texture.setPixels(genColormap(params.colormap))
++    this.texture.generateMipmap()
++  }
+ 
+-  this._selectResult = new ScatterPlotPickResult(0, [0,0,0])
++  var cells = params.cells
++  var positions = params.positions
+ 
+-  this.useOrtho = true
+-  this.bounds   = [[ Infinity,Infinity,Infinity],
+-                   [-Infinity,-Infinity,-Infinity]]
++  if(!positions || !cells) {
++    return
++  }
+ 
+-  //Axes projections
+-  this.axesProject = [ true, true, true ]
+-  this.axesBounds = [[-Infinity,-Infinity,-Infinity],
+-                     [ Infinity, Infinity, Infinity]]
++  var tPos = []
++  var tCol = []
++  var tNor = []
++  var tUVs = []
++  var tIds = []
+ 
+-  this.highlightId    = [1,1,1,1]
+-  this.highlightScale = 2
++  var ePos = []
++  var eCol = []
++  var eUVs = []
++  var eIds = []
+ 
+-  this.clipBounds = [[-Infinity,-Infinity,-Infinity],
+-                     [ Infinity, Infinity, Infinity]]
++  var pPos = []
++  var pCol = []
++  var pUVs = []
++  var pSiz = []
++  var pIds = []
+ 
+-  this.dirty = true
+-}
++  //Save geometry data for picking calculations
++  this.cells     = cells
++  this.positions = positions
+ 
+-var proto = PointCloud.prototype
++  //Compute normals
++  var vertexNormals = params.vertexNormals
++  var cellNormals   = params.cellNormals
++  var vertexNormalsEpsilon = params.vertexNormalsEpsilon === void(0) ? DEFAULT_VERTEX_NORMALS_EPSILON : params.vertexNormalsEpsilon
++  var faceNormalsEpsilon = params.faceNormalsEpsilon === void(0) ? DEFAULT_FACE_NORMALS_EPSILON : params.faceNormalsEpsilon
++  if(params.useFacetNormals && !cellNormals) {
++    cellNormals = normals.faceNormals(cells, positions, faceNormalsEpsilon)
++  }
++  if(!cellNormals && !vertexNormals) {
++    vertexNormals = normals.vertexNormals(cells, positions, vertexNormalsEpsilon)
++  }
+ 
+-proto.pickSlots = 1
++  //Compute colors
++  var vertexColors    = params.vertexColors
++  var cellColors      = params.cellColors
++  var meshColor       = params.meshColor || [1,1,1,1]
+ 
+-proto.setPickBase = function(pickBase) {
+-  this.pickId = pickBase
+-}
++  //UVs
++  var vertexUVs       = params.vertexUVs
++  var vertexIntensity = params.vertexIntensity
++  var cellUVs         = params.cellUVs
++  var cellIntensity   = params.cellIntensity
+ 
+-proto.isTransparent = function() {
+-  if(this.opacity < 1)  {
+-    return true
+-  }
+-  for(var i=0; i<3; ++i) {
+-    if(this.axesProject[i] && this.projectOpacity[i] < 1) {
+-      return true
++  var intensityLo     = Infinity
++  var intensityHi     = -Infinity
++  if(!vertexUVs && !cellUVs) {
++    if(vertexIntensity) {
++      for(var i=0; i<vertexIntensity.length; ++i) {
++        var f = vertexIntensity[i]
++        intensityLo = Math.min(intensityLo, f)
++        intensityHi = Math.max(intensityHi, f)
++      }
++    } else if(cellIntensity) {
++      for(var i=0; i<cellIntensity.length; ++i) {
++        var f = cellIntensity[i]
++        intensityLo = Math.min(intensityLo, f)
++        intensityHi = Math.max(intensityHi, f)
++      }
++    } else {
++      for(var i=0; i<positions.length; ++i) {
++        var f = positions[i][2]
++        intensityLo = Math.min(intensityLo, f)
++        intensityHi = Math.max(intensityHi, f)
++      }
+     }
+   }
+-  return false
+-}
+ 
+-proto.isOpaque = function() {
+-  if(this.opacity >= 1)  {
+-    return true
+-  }
+-  for(var i=0; i<3; ++i) {
+-    if(this.axesProject[i] && this.projectOpacity[i] >= 1) {
+-      return true
+-    }
++  if(vertexIntensity) {
++    this.intensity = vertexIntensity
++  } else if(cellIntensity) {
++    this.intensity = unpackIntensity(cells, positions.length, cellIntensity)
++  } else {
++    this.intensity = takeZComponent(positions)
+   }
+-  return false
+-}
+-
+-var VIEW_SHAPE = [0,0]
+-var U_VEC = [0,0,0]
+-var V_VEC = [0,0,0]
+-var MU_VEC = [0,0,0,1]
+-var MV_VEC = [0,0,0,1]
+-var SCRATCH_MATRIX = IDENTITY.slice()
+-var SCRATCH_VEC = [0,0,0]
+-var CLIP_BOUNDS = [[0,0,0], [0,0,0]]
+-
+-function zeroVec(a) {
+-  a[0] = a[1] = a[2] = 0
+-  return a
+-}
+-
+-function augment(hg, af) {
+-  hg[0] = af[0]
+-  hg[1] = af[1]
+-  hg[2] = af[2]
+-  hg[3] = 1
+-  return hg
+-}
+ 
+-function setComponent(out, v, i, x) {
+-  out[0] = v[0]
+-  out[1] = v[1]
+-  out[2] = v[2]
+-  out[i] = x
+-  return out
+-}
++  //Point size
++  var pointSizes      = params.pointSizes
++  var meshPointSize   = params.pointSize || 1.0
+ 
+-function getClipBounds(bounds) {
+-  var result = CLIP_BOUNDS
+-  for(var i=0; i<2; ++i) {
++  //Update bounds
++  this.bounds       = [[Infinity,Infinity,Infinity], [-Infinity,-Infinity,-Infinity]]
++  for(var i=0; i<positions.length; ++i) {
++    var p = positions[i]
+     for(var j=0; j<3; ++j) {
+-      result[i][j] = Math.max(Math.min(bounds[i][j], 1e8), -1e8)
++      if(isNaN(p[j]) || !isFinite(p[j])) {
++        continue
++      }
++      this.bounds[0][j] = Math.min(this.bounds[0][j], p[j])
++      this.bounds[1][j] = Math.max(this.bounds[1][j], p[j])
+     }
+   }
+-  return result
+-}
+-
+-function drawProject(shader, points, camera, transparent, forceDraw) {
+-  var axesProject = points.axesProject
+ 
+-  var gl         = points.gl
+-  var uniforms   = shader.uniforms
+-  var model      = camera.model      || IDENTITY
+-  var view       = camera.view       || IDENTITY
+-  var projection = camera.projection || IDENTITY
+-  var bounds     = points.axesBounds
+-  var clipBounds = getClipBounds(points.clipBounds)
++  //Pack cells into buffers
++  var triangleCount = 0
++  var edgeCount = 0
++  var pointCount = 0
+ 
+-  var cubeAxis
+-  if(points.axes) {
+-    cubeAxis = points.axes.lastCubeProps.axis
+-  } else {
+-    cubeAxis = [1,1,1]
+-  }
++fill_loop:
++  for(var i=0; i<cells.length; ++i) {
++    var cell = cells[i]
++    switch(cell.length) {
++      case 1:
+ 
+-  VIEW_SHAPE[0] = 2.0/gl.drawingBufferWidth
+-  VIEW_SHAPE[1] = 2.0/gl.drawingBufferHeight
++        var v = cell[0]
++        var p = positions[v]
+ 
+-  shader.bind()
+-  uniforms.view           = view
+-  uniforms.projection     = projection
+-  uniforms.screenSize     = VIEW_SHAPE
+-  uniforms.highlightId    = points.highlightId
+-  uniforms.highlightScale = points.highlightScale
+-  uniforms.clipBounds     = clipBounds
+-  uniforms.pickGroup      = points.pickId / 255.0
+-  uniforms.pixelRatio     = points.pixelRatio
++        //Check NaNs
++        for(var j=0; j<3; ++j) {
++          if(isNaN(p[j]) || !isFinite(p[j])) {
++            continue fill_loop
++          }
++        }
+ 
+-  for(var i=0; i<3; ++i) {
+-    if(!axesProject[i]) {
+-      continue
+-    }
+-    if((points.projectOpacity[i] < 1) !== transparent) {
+-      continue
+-    }
++        pPos.push(p[0], p[1], p[2])
+ 
+-    uniforms.scale          = points.projectScale[i]
+-    uniforms.opacity        = points.projectOpacity[i]
++        var c
++        if(vertexColors) {
++          c = vertexColors[v]
++        } else if(cellColors) {
++          c = cellColors[i]
++        } else {
++          c = meshColor
++        }
++        if(c.length === 3) {
++          pCol.push(c[0], c[1], c[2], 1)
++        } else {
++          pCol.push(c[0], c[1], c[2], c[3])
++        }
+ 
+-    //Project model matrix
+-    var pmodel = SCRATCH_MATRIX
+-    for(var j=0; j<16; ++j) {
+-      pmodel[j] = 0
+-    }
+-    for(var j=0; j<4; ++j) {
+-      pmodel[5*j] = 1
+-    }
+-    pmodel[5*i] = 0
+-    if(cubeAxis[i] < 0) {
+-      pmodel[12+i] = bounds[0][i]
+-    } else {
+-      pmodel[12+i] = bounds[1][i]
+-    }
+-    mat4mult(pmodel, model, pmodel)
+-    uniforms.model = pmodel
++        var uv
++        if(vertexUVs) {
++          uv = vertexUVs[v]
++        } else if(vertexIntensity) {
++          uv = [
++            (vertexIntensity[v] - intensityLo) /
++            (intensityHi - intensityLo), 0]
++        } else if(cellUVs) {
++          uv = cellUVs[i]
++        } else if(cellIntensity) {
++          uv = [
++            (cellIntensity[i] - intensityLo) /
++            (intensityHi - intensityLo), 0]
++        } else {
++          uv = [
++            (p[2] - intensityLo) /
++            (intensityHi - intensityLo), 0]
++        }
++        pUVs.push(uv[0], uv[1])
+ 
+-    //Compute initial axes
+-    var u = (i+1)%3
+-    var v = (i+2)%3
+-    var du = zeroVec(U_VEC)
+-    var dv = zeroVec(V_VEC)
+-    du[u] = 1
+-    dv[v] = 1
++        if(pointSizes) {
++          pSiz.push(pointSizes[v])
++        } else {
++          pSiz.push(meshPointSize)
++        }
+ 
+-    //Align orientation relative to viewer
+-    var mdu = project(projection, view, model, augment(MU_VEC, du))
+-    var mdv = project(projection, view, model, augment(MV_VEC, dv))
+-    if(Math.abs(mdu[1]) > Math.abs(mdv[1])) {
+-      var tmp = mdu
+-      mdu = mdv
+-      mdv = tmp
+-      tmp = du
+-      du = dv
+-      dv = tmp
+-      var t = u
+-      u = v
+-      v = t
+-    }
+-    if(mdu[0] < 0) {
+-      du[u] = -1
+-    }
+-    if(mdv[1] > 0) {
+-      dv[v] = -1
+-    }
+-    var su = 0.0
+-    var sv = 0.0
+-    for(var j=0; j<4; ++j) {
+-      su += Math.pow(model[4*u+j], 2)
+-      sv += Math.pow(model[4*v+j], 2)
+-    }
+-    du[u] /= Math.sqrt(su)
+-    dv[v] /= Math.sqrt(sv)
+-    uniforms.axes[0] = du
+-    uniforms.axes[1] = dv
++        pIds.push(i)
+ 
+-    //Update fragment clip bounds
+-    uniforms.fragClipBounds[0] = setComponent(SCRATCH_VEC, clipBounds[0], i, -1e8)
+-    uniforms.fragClipBounds[1] = setComponent(SCRATCH_VEC, clipBounds[1], i, 1e8)
++        pointCount += 1
++      break
+ 
+-    //Draw interior
+-    points.vao.draw(gl.TRIANGLES, points.vertexCount)
++      case 2:
+ 
+-    //Draw edges
+-    if(points.lineWidth > 0) {
+-      gl.lineWidth(points.lineWidth)
+-      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
+-    }
+-  }
+-}
++        //Check NaNs
++        for(var j=0; j<2; ++j) {
++          var v = cell[j]
++          var p = positions[v]
++          for(var k=0; k<3; ++k) {
++            if(isNaN(p[k]) || !isFinite(p[k])) {
++              continue fill_loop
++            }
++          }
++        }
+ 
++        for(var j=0; j<2; ++j) {
++          var v = cell[j]
++          var p = positions[v]
+ 
+-var NEG_INFINITY3 = [-1e8, -1e8, -1e8]
+-var POS_INFINITY3 = [1e8, 1e8, 1e8]
+-var CLIP_GROUP    = [NEG_INFINITY3, POS_INFINITY3]
++          ePos.push(p[0], p[1], p[2])
+ 
+-function drawFull(shader, pshader, points, camera, transparent, forceDraw) {
+-  var gl = points.gl
++          var c
++          if(vertexColors) {
++            c = vertexColors[v]
++          } else if(cellColors) {
++            c = cellColors[i]
++          } else {
++            c = meshColor
++          }
++          if(c.length === 3) {
++            eCol.push(c[0], c[1], c[2], 1)
++          } else {
++            eCol.push(c[0], c[1], c[2], c[3])
++          }
+ 
+-  points.vao.bind()
++          var uv
++          if(vertexUVs) {
++            uv = vertexUVs[v]
++          } else if(vertexIntensity) {
++            uv = [
++              (vertexIntensity[v] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else if(cellUVs) {
++            uv = cellUVs[i]
++          } else if(cellIntensity) {
++            uv = [
++              (cellIntensity[i] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else {
++            uv = [
++              (p[2] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          }
++          eUVs.push(uv[0], uv[1])
+ 
+-  if(transparent === (points.opacity < 1) || forceDraw) {
+-    shader.bind()
+-    var uniforms = shader.uniforms
++          eIds.push(i)
++        }
++        edgeCount += 1
++      break
+ 
+-    uniforms.model      = camera.model      || IDENTITY
+-    uniforms.view       = camera.view       || IDENTITY
+-    uniforms.projection = camera.projection || IDENTITY
++      case 3:
++        //Check NaNs
++        for(var j=0; j<3; ++j) {
++          var v = cell[j]
++          var p = positions[v]
++          for(var k=0; k<3; ++k) {
++            if(isNaN(p[k]) || !isFinite(p[k])) {
++              continue fill_loop
++            }
++          }
++        }
+ 
+-    VIEW_SHAPE[0]       = 2.0/gl.drawingBufferWidth
+-    VIEW_SHAPE[1]       = 2.0/gl.drawingBufferHeight
+-    uniforms.screenSize = VIEW_SHAPE
++        for(var j=0; j<3; ++j) {
++          var v = cell[j]
+ 
+-    uniforms.highlightId    = points.highlightId
+-    uniforms.highlightScale = points.highlightScale
++          var p = positions[v]
++          tPos.push(p[0], p[1], p[2])
+ 
+-    uniforms.fragClipBounds = CLIP_GROUP
+-    uniforms.clipBounds     = points.axes.bounds
++          var c
++          if(vertexColors) {
++            c = vertexColors[v]
++          } else if(cellColors) {
++            c = cellColors[i]
++          } else {
++            c = meshColor
++          }
++          if(c.length === 3) {
++            tCol.push(c[0], c[1], c[2], 1)
++          } else {
++            tCol.push(c[0], c[1], c[2], c[3])
++          }
+ 
+-    uniforms.opacity    = points.opacity
+-    uniforms.pickGroup  = points.pickId / 255.0
++          var uv
++          if(vertexUVs) {
++            uv = vertexUVs[v]
++          } else if(vertexIntensity) {
++            uv = [
++              (vertexIntensity[v] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else if(cellUVs) {
++            uv = cellUVs[i]
++          } else if(cellIntensity) {
++            uv = [
++              (cellIntensity[i] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else {
++            uv = [
++              (p[2] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          }
++          tUVs.push(uv[0], uv[1])
+ 
+-    uniforms.pixelRatio = points.pixelRatio
++          var q
++          if(vertexNormals) {
++            q = vertexNormals[v]
++          } else {
++            q = cellNormals[i]
++          }
++          tNor.push(q[0], q[1], q[2])
+ 
+-    //Draw interior
+-    points.vao.draw(gl.TRIANGLES, points.vertexCount)
++          tIds.push(i)
++        }
++        triangleCount += 1
++      break
+ 
+-    //Draw edges
+-    if(points.lineWidth > 0) {
+-      gl.lineWidth(points.lineWidth)
+-      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
++      default:
++      break
+     }
+   }
+ 
+-  drawProject(pshader, points, camera, transparent, forceDraw)
+-
+-  points.vao.unbind()
+-}
++  this.pointCount     = pointCount
++  this.edgeCount      = edgeCount
++  this.triangleCount  = triangleCount
+ 
+-proto.draw = function(camera) {
+-  var shader = this.useOrtho ? this.orthoShader : this.shader
+-  drawFull(shader, this.projectShader, this, camera, false, false)
+-}
++  this.pointPositions.update(pPos)
++  this.pointColors.update(pCol)
++  this.pointUVs.update(pUVs)
++  this.pointSizes.update(pSiz)
++  this.pointIds.update(new Uint32Array(pIds))
+ 
+-proto.drawTransparent = function(camera) {
+-  var shader = this.useOrtho ? this.orthoShader : this.shader
+-  drawFull(shader, this.projectShader, this, camera, true, false)
+-}
++  this.edgePositions.update(ePos)
++  this.edgeColors.update(eCol)
++  this.edgeUVs.update(eUVs)
++  this.edgeIds.update(new Uint32Array(eIds))
+ 
+-proto.drawPick = function(camera) {
+-  var shader = this.useOrtho ? this.pickOrthoShader : this.pickPerspectiveShader
+-  drawFull(shader, this.pickProjectShader, this, camera, false, true)
++  this.trianglePositions.update(tPos)
++  this.triangleColors.update(tCol)
++  this.triangleUVs.update(tUVs)
++  this.triangleNormals.update(tNor)
++  this.triangleIds.update(new Uint32Array(tIds))
+ }
+ 
+-proto.pick = function(selected) {
+-  if(!selected) {
+-    return null
+-  }
+-  if(selected.id !== this.pickId) {
+-    return null
+-  }
+-  var x = selected.value[2] + (selected.value[1]<<8) + (selected.value[0]<<16)
+-  if(x >= this.pointCount || x < 0) {
+-    return null
+-  }
++proto.drawTransparent = proto.draw = function(params) {
++  params = params || {}
++  var gl          = this.gl
++  var model       = params.model      || identityMatrix
++  var view        = params.view       || identityMatrix
++  var projection  = params.projection || identityMatrix
+ 
+-  //Unpack result
+-  var coord = this.points[x]
+-  var result = this._selectResult
+-  result.index = x
++  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
+   for(var i=0; i<3; ++i) {
+-    result.position[i] = result.dataCoordinate[i] = coord[i]
++    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
++    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
+   }
+-  return result
+-}
+ 
+-proto.highlight = function(selection) {
+-  if(!selection) {
+-    this.highlightId = [1,1,1,1]
+-  } else {
+-    var pointId = selection.index
+-    var a0 =  pointId     &0xff
+-    var a1 = (pointId>>8) &0xff
+-    var a2 = (pointId>>16)&0xff
+-    this.highlightId = [a0/255.0, a1/255.0, a2/255.0, 0]
+-  }
+-}
++  var uniforms = {
++    model:      model,
++    view:       view,
++    projection: projection,
+ 
+-proto.update = function(options) {
++    clipBounds: clipBounds,
+ 
+-  options = options || {}
++    kambient:   this.ambientLight,
++    kdiffuse:   this.diffuseLight,
++    kspecular:  this.specularLight,
++    roughness:  this.roughness,
++    fresnel:    this.fresnel,
+ 
+-  if('perspective' in options) {
+-    this.useOrtho = !options.perspective
+-  }
+-  if('orthographic' in options) {
+-    this.useOrtho = !!options.orthographic
+-  }
+-  if('lineWidth' in options) {
+-    this.lineWidth = options.lineWidth
++    eyePosition:   [0,0,0],
++    lightPosition: [0,0,0],
++
++    opacity:  this.opacity,
++
++    contourColor: this.contourColor,
++
++    texture:    0
+   }
+-  if('project' in options) {
+-    if(Array.isArray(options.project)) {
+-      this.axesProject = options.project
+-    } else {
+-      var v = !!options.project
+-      this.axesProject = [v,v,v]
+-    }
++
++  this.texture.bind(0)
++
++  var invCameraMatrix = new Array(16)
++  multiply(invCameraMatrix, uniforms.view, uniforms.model)
++  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
++  invert(invCameraMatrix, invCameraMatrix)
++
++  for(var i=0; i<3; ++i) {
++    uniforms.eyePosition[i] = invCameraMatrix[12+i] / invCameraMatrix[15]
+   }
+-  if('projectScale' in options) {
+-    if(Array.isArray(options.projectScale)) {
+-      this.projectScale = options.projectScale.slice()
+-    } else {
+-      var s = +options.projectScale
+-      this.projectScale = [s,s,s]
+-    }
++
++  var w = invCameraMatrix[15]
++  for(var i=0; i<3; ++i) {
++    w += this.lightPosition[i] * invCameraMatrix[4*i+3]
+   }
+-  if('projectOpacity' in options) {
+-    if(Array.isArray(options.projectOpacity)) {
+-      this.projectOpacity = options.projectOpacity.slice()
+-    } else {
+-      var s = +options.projectOpacity
+-      this.projectOpacity = [s,s,s]
++  for(var i=0; i<3; ++i) {
++    var s = invCameraMatrix[12+i]
++    for(var j=0; j<3; ++j) {
++      s += invCameraMatrix[4*j+i] * this.lightPosition[j]
+     }
+-  }
+-  if('opacity' in options) {
+-    this.opacity = options.opacity
++    uniforms.lightPosition[i] = s / w
+   }
+ 
+-  //Set dirty flag
+-  this.dirty = true
++  if(this.triangleCount > 0) {
++    var shader = this.triShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-  //Create new buffers
+-  var points = options.position
+-  if(!points) {
+-    return
++    this.triangleVAO.bind()
++    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
++    this.triangleVAO.unbind()
+   }
+ 
+-  //Text font
+-  var font      = options.font      || 'normal'
+-  var alignment = options.alignment || [0,0]
+-
+-  //Bounds
+-  var lowerBound = [ Infinity, Infinity, Infinity]
+-  var upperBound = [-Infinity,-Infinity,-Infinity]
+-
+-  //Unpack options
+-  var glyphs     = options.glyph
+-  var colors     = options.color
+-  var sizes      = options.size
+-  var angles     = options.angle
+-  var lineColors = options.lineColor
+-
+-  //Picking geometry
+-  var pickCounter = 0
++  if(this.edgeCount > 0 && this.lineWidth > 0) {
++    var shader = this.lineShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-  //First do pass to compute buffer sizes
+-  var triVertexCount     = 0
+-  var lineVertexCount = 0
++    this.edgeVAO.bind()
++    gl.lineWidth(this.lineWidth)
++    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
++    this.edgeVAO.unbind()
++  }
+ 
+-  //Count number of points and buffer size
+-  var numPoints   = points.length
++  if(this.pointCount > 0) {
++    var shader = this.pointShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-count_loop:
+-  for(var i=0; i<numPoints; ++i) {
+-    var x = points[i]
+-    for(var j=0; j<3; ++j) {
+-      if(isNaN(x[j]) || !isFinite(x[j])) {
+-        continue count_loop
+-      }
+-    }
++    this.pointVAO.bind()
++    gl.drawArrays(gl.POINTS, 0, this.pointCount)
++    this.pointVAO.unbind()
++  }
+ 
+-    var glyphData
+-    if(Array.isArray(glyphs)) {
+-      glyphData = getGlyph(glyphs[i], font)
+-    } else if(glyphs) {
+-      glyphData = getGlyph(glyphs, font)
+-    } else {
+-      glyphData = getGlyph('●', font)
+-    }
+-    var glyphMesh   = glyphData[0]
+-    var glyphLines  = glyphData[1]
+-    var glyphBounds = glyphData[2]
++  if(this.contourEnable && this.contourCount > 0 && this.contourLineWidth > 0) {
++    var shader = this.contourShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-    triVertexCount  += glyphMesh.cells.length * 3
+-    lineVertexCount += glyphLines.edges.length * 2
++    this.contourVAO.bind()
++    gl.drawArrays(gl.LINES, 0, this.contourCount)
++    this.contourVAO.unbind()
+   }
++}
+ 
++proto.drawPick = function(params) {
++  params = params || {}
+ 
+-  //Preallocate data
+-  var vertexCount   = triVertexCount + lineVertexCount
+-  var positionArray = pool.mallocFloat(3*vertexCount)
+-  var colorArray    = pool.mallocFloat(4*vertexCount)
+-  var glyphArray    = pool.mallocFloat(2*vertexCount)
+-  var idArray       = pool.mallocUint32(vertexCount)
++  var gl         = this.gl
+ 
+-  var textOffset = [0,alignment[1]]
++  var model      = params.model      || identityMatrix
++  var view       = params.view       || identityMatrix
++  var projection = params.projection || identityMatrix
+ 
+-  var triOffset  = 0
+-  var lineOffset = triVertexCount
+-  var color      = [0,0,0,1]
+-  var lineColor  = [0,0,0,1]
++  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
++  for(var i=0; i<3; ++i) {
++    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
++    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
++  }
+ 
+-  var isColorArray      = Array.isArray(colors)     && Array.isArray(colors[0])
+-  var isLineColorArray  = Array.isArray(lineColors) && Array.isArray(lineColors[0])
++  //Save camera parameters
++  this._model      = [].slice.call(model)
++  this._view       = [].slice.call(view)
++  this._projection = [].slice.call(projection)
++  this._resolution = [gl.drawingBufferWidth, gl.drawingBufferHeight]
+ 
+-fill_loop:
+-  for(var i=0; i<numPoints; ++i) {
+-    var x = points[i]
+-    for(var j=0; j<3; ++j) {
+-      if(isNaN(x[j]) || !isFinite(x[j])) {
+-        pickCounter += 1
+-        continue fill_loop
+-      }
++  var uniforms = {
++    model:      model,
++    view:       view,
++    projection: projection,
++    clipBounds: clipBounds,
++    pickId:     this.pickId / 255.0,
++  }
+ 
+-      upperBound[j] = Math.max(upperBound[j], x[j])
+-      lowerBound[j] = Math.min(lowerBound[j], x[j])
+-    }
++  var shader = this.pickShader
++  shader.bind()
++  shader.uniforms = uniforms
+ 
+-    var glyphData
+-    if(Array.isArray(glyphs)) {
+-      glyphData = getGlyph(glyphs[i], font)
+-    } else if(glyphs) {
+-      glyphData = getGlyph(glyphs, font)
+-    } else {
+-      glyphData = getGlyph('●', font)
+-    }
+-    var glyphMesh   = glyphData[0]
+-    var glyphLines  = glyphData[1]
+-    var glyphBounds = glyphData[2]
++  if(this.triangleCount > 0) {
++    this.triangleVAO.bind()
++    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
++    this.triangleVAO.unbind()
++  }
+ 
++  if(this.edgeCount > 0) {
++    this.edgeVAO.bind()
++    gl.lineWidth(this.lineWidth)
++    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
++    this.edgeVAO.unbind()
++  }
+ 
+-    //Get color
+-    if(Array.isArray(colors)) {
+-      var c
+-      if(isColorArray) {
+-        c = colors[i]
+-      } else {
+-        c = colors
+-      }
+-      if(c.length === 3) {
+-        for(var j=0; j<3; ++j) {
+-          color[j] = c[j]
+-        }
+-        color[3] = 1
+-      } else if(c.length === 4) {
+-        for(var j=0; j<4; ++j) {
+-          color[j] = c[j]
+-        }
+-      }
+-    } else {
+-      color[0] = color[1] = color[2] = 0
+-      color[3] = 1
+-    }
++  if(this.pointCount > 0) {
++    var shader = this.pointPickShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-    //Get lineColor
+-    if(Array.isArray(lineColors)) {
+-      var c
+-      if(isLineColorArray) {
+-        c = lineColors[i]
+-      } else {
+-        c = lineColors
+-      }
+-      if(c.length === 3) {
+-        for(var j=0; j<3; ++j) {
+-          lineColor[j] = c[j]
+-        }
+-        lineColor[j] = 1
+-      } else if(c.length === 4) {
+-        for(var j=0; j<4; ++j) {
+-          lineColor[j] = c[j]
+-        }
+-      }
+-    } else {
+-      lineColor[0] = lineColor[1] = lineColor[2] = 0
+-      lineColor[3] = 1
+-    }
++    this.pointVAO.bind()
++    gl.drawArrays(gl.POINTS, 0, this.pointCount)
++    this.pointVAO.unbind()
++  }
++}
+ 
+-    var size = 0.5
+-    if(Array.isArray(sizes)) {
+-      size = +sizes[i]
+-    } else if(sizes) {
+-      size = +sizes
+-    } else if(this.useOrtho) {
+-      size = 12
+-    }
+ 
+-    var angle = 0
+-    if(Array.isArray(angles)) {
+-      angle = +angles[i]
+-    } else if(angles) {
+-      angle = +angles
+-    }
++proto.pick = function(pickData) {
++  if(!pickData) {
++    return null
++  }
++  if(pickData.id !== this.pickId) {
++    return null
++  }
+ 
+-    //Loop through markers and append to buffers
+-    var cos = Math.cos(angle)
+-    var sin = Math.sin(angle)
++  var cellId    = pickData.value[0] + 256*pickData.value[1] + 65536*pickData.value[2]
++  var cell      = this.cells[cellId]
++  var positions = this.positions
+ 
+-    var x = points[i]
+-    for(var j=0; j<3; ++j) {
+-      upperBound[j] = Math.max(upperBound[j], x[j])
+-      lowerBound[j] = Math.min(lowerBound[j], x[j])
+-    }
++  var simplex   = new Array(cell.length)
++  for(var i=0; i<cell.length; ++i) {
++    simplex[i] = positions[cell[i]]
++  }
+ 
+-    //Calculate text offset
+-    if(alignment[0] < 0) {
+-      textOffset[0] = alignment[0]  * (1+glyphBounds[1][0])
+-    } else if(alignment[0] > 0) {
+-      textOffset[0] = -alignment[0] * (1+glyphBounds[0][0])
+-    }
++  var data = closestPoint(
++    simplex,
++    [pickData.coord[0], this._resolution[1]-pickData.coord[1]],
++    this._model,
++    this._view,
++    this._projection,
++    this._resolution)
+ 
+-    //Write out inner marker
+-    var cells = glyphMesh.cells
+-    var verts = glyphMesh.positions
++  if(!data) {
++    return null
++  }
+ 
+-    for(var j=0; j<cells.length; ++j) {
+-      var cell = cells[j]
+-      for(var k=0; k<3; ++k) {
+-        for(var l=0; l<3; ++l) {
+-          positionArray[3*triOffset+l] = x[l]
+-        }
+-        for(var l=0; l<4; ++l) {
+-          colorArray[4*triOffset+l] = color[l]
+-        }
+-        idArray[triOffset] = pickCounter
+-        var p = verts[cell[k]]
+-        glyphArray[2*triOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
+-        glyphArray[2*triOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
+-        triOffset += 1
+-      }
+-    }
++  var weights = data[2]
++  var interpIntensity = 0.0
++  for(var i=0; i<cell.length; ++i) {
++    interpIntensity += weights[i] * this.intensity[cell[i]]
++  }
+ 
+-    var cells = glyphLines.edges
+-    var verts = glyphLines.positions
++  return {
++    position: data[1],
++    index:    cell[data[0]],
++    cell:     cell,
++    cellId:   cellId,
++    intensity:  interpIntensity,
++    dataCoordinate: this.positions[cell[data[0]]]
++  }
++}
+ 
+-    for(var j=0; j<cells.length; ++j) {
+-      var cell = cells[j]
+-      for(var k=0; k<2; ++k) {
+-        for(var l=0; l<3; ++l) {
+-          positionArray[3*lineOffset+l] = x[l]
+-        }
+-        for(var l=0; l<4; ++l) {
+-          colorArray[4*lineOffset+l] = lineColor[l]
+-        }
+-        idArray[lineOffset] = pickCounter
+-        var p = verts[cell[k]]
+-        glyphArray[2*lineOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
+-        glyphArray[2*lineOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
+-        lineOffset += 1
+-      }
+-    }
+ 
+-    //Increment pickCounter
+-    pickCounter += 1
+-  }
++proto.dispose = function() {
++  this.texture.dispose()
+ 
++  this.triShader.dispose()
++  this.lineShader.dispose()
++  this.pointShader.dispose()
++  this.pickShader.dispose()
++  this.pointPickShader.dispose()
+ 
+-  //Update vertex counts
+-  this.vertexCount      = triVertexCount
+-  this.lineVertexCount  = lineVertexCount
++  this.triangleVAO.dispose()
++  this.trianglePositions.dispose()
++  this.triangleColors.dispose()
++  this.triangleUVs.dispose()
++  this.triangleNormals.dispose()
++  this.triangleIds.dispose()
+ 
+-  //Update buffers
+-  this.pointBuffer.update(positionArray)
+-  this.colorBuffer.update(colorArray)
+-  this.glyphBuffer.update(glyphArray)
+-  this.idBuffer.update(new Uint32Array(idArray))
++  this.edgeVAO.dispose()
++  this.edgePositions.dispose()
++  this.edgeColors.dispose()
++  this.edgeUVs.dispose()
++  this.edgeIds.dispose()
+ 
+-  pool.free(positionArray)
+-  pool.free(colorArray)
+-  pool.free(glyphArray)
+-  pool.free(idArray)
++  this.pointVAO.dispose()
++  this.pointPositions.dispose()
++  this.pointColors.dispose()
++  this.pointUVs.dispose()
++  this.pointSizes.dispose()
++  this.pointIds.dispose()
+ 
+-  //Update bounds
+-  this.bounds = [lowerBound, upperBound]
++  this.contourVAO.dispose()
++  this.contourPositions.dispose()
++  this.contourShader.dispose()
++}
+ 
+-  //Save points
+-  this.points = points
++function createMeshShader(gl) {
++  var shader = createShader(gl, meshShader)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location    = 2
++  shader.attributes.uv.location       = 3
++  shader.attributes.normal.location   = 4
++  return shader
++}
+ 
+-  //Save number of points
+-  this.pointCount = points.length
++function createWireShader(gl) {
++  var shader = createShader(gl, wireShader)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location    = 2
++  shader.attributes.uv.location       = 3
++  return shader
+ }
+ 
+-proto.dispose = function() {
+-  //Shaders
+-  this.shader.dispose()
+-  this.orthoShader.dispose()
+-  this.pickPerspectiveShader.dispose()
+-  this.pickOrthoShader.dispose()
++function createPointShader(gl) {
++  var shader = createShader(gl, pointShader)
++  shader.attributes.position.location  = 0
++  shader.attributes.color.location     = 2
++  shader.attributes.uv.location        = 3
++  shader.attributes.pointSize.location = 4
++  return shader
++}
+ 
+-  //Vertex array
+-  this.vao.dispose()
++function createPickShader(gl) {
++  var shader = createShader(gl, pickShader)
++  shader.attributes.position.location = 0
++  shader.attributes.id.location       = 1
++  return shader
++}
+ 
+-  //Buffers
+-  this.pointBuffer.dispose()
+-  this.colorBuffer.dispose()
+-  this.glyphBuffer.dispose()
+-  this.idBuffer.dispose()
++function createPointPickShader(gl) {
++  var shader = createShader(gl, pointPickShader)
++  shader.attributes.position.location  = 0
++  shader.attributes.id.location        = 1
++  shader.attributes.pointSize.location = 4
++  return shader
+ }
+ 
+-function createPointCloud(options) {
+-  var gl = options.gl
++function createContourShader(gl) {
++  var shader = createShader(gl, contourShader)
++  shader.attributes.position.location = 0
++  return shader
++}
+ 
+-  var shader                = shaders.createPerspective(gl)
+-  var orthoShader           = shaders.createOrtho(gl)
+-  var projectShader         = shaders.createProject(gl)
+-  var pickPerspectiveShader = shaders.createPickPerspective(gl)
+-  var pickOrthoShader       = shaders.createPickOrtho(gl)
+-  var pickProjectShader     = shaders.createPickProject(gl)
++function createSimplicialMesh(params) {
++  var gl = params.gl
+ 
+-  var pointBuffer = createBuffer(gl)
+-  var colorBuffer = createBuffer(gl)
+-  var glyphBuffer = createBuffer(gl)
+-  var idBuffer    = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    {
+-      buffer: pointBuffer,
+-      size: 3,
+-      type: gl.FLOAT
++  var triShader       = createMeshShader(gl)
++  var lineShader      = createWireShader(gl)
++  var pointShader     = createPointShader(gl)
++  var pickShader      = createPickShader(gl)
++  var pointPickShader = createPointPickShader(gl)
++  var contourShader   = createContourShader(gl)
++
++  var meshTexture       = createTexture(gl,
++    ndarray(new Uint8Array([255,255,255,255]), [1,1,4]))
++  meshTexture.generateMipmap()
++  meshTexture.minFilter = gl.LINEAR_MIPMAP_LINEAR
++  meshTexture.magFilter = gl.LINEAR
++
++  var trianglePositions = createBuffer(gl)
++  var triangleColors    = createBuffer(gl)
++  var triangleUVs       = createBuffer(gl)
++  var triangleNormals   = createBuffer(gl)
++  var triangleIds       = createBuffer(gl)
++  var triangleVAO       = createVAO(gl, [
++    { buffer: trianglePositions,
++      type: gl.FLOAT,
++      size: 3
+     },
+-    {
+-      buffer: colorBuffer,
++    { buffer: triangleIds,
++      type: gl.UNSIGNED_BYTE,
+       size: 4,
+-      type: gl.FLOAT
++      normalized: true
+     },
+-    {
+-      buffer: glyphBuffer,
+-      size: 2,
+-      type: gl.FLOAT
++    { buffer: triangleColors,
++      type: gl.FLOAT,
++      size: 4
+     },
+-    {
+-      buffer: idBuffer,
+-      size: 4,
++    { buffer: triangleUVs,
++      type: gl.FLOAT,
++      size: 2
++    },
++    { buffer: triangleNormals,
++      type: gl.FLOAT,
++      size: 3
++    }
++  ])
++
++  var edgePositions = createBuffer(gl)
++  var edgeColors    = createBuffer(gl)
++  var edgeUVs       = createBuffer(gl)
++  var edgeIds       = createBuffer(gl)
++  var edgeVAO       = createVAO(gl, [
++    { buffer: edgePositions,
++      type: gl.FLOAT,
++      size: 3
++    },
++    { buffer: edgeIds,
+       type: gl.UNSIGNED_BYTE,
++      size: 4,
+       normalized: true
++    },
++    { buffer: edgeColors,
++      type: gl.FLOAT,
++      size: 4
++    },
++    { buffer: edgeUVs,
++      type: gl.FLOAT,
++      size: 2
+     }
+   ])
+ 
+-  var pointCloud = new PointCloud(
+-    gl,
+-    shader,
+-    orthoShader,
+-    projectShader,
+-    pointBuffer,
+-    colorBuffer,
+-    glyphBuffer,
+-    idBuffer,
+-    vao,
+-    pickPerspectiveShader,
+-    pickOrthoShader,
+-    pickProjectShader)
+-
+-  pointCloud.update(options)
++  var pointPositions  = createBuffer(gl)
++  var pointColors     = createBuffer(gl)
++  var pointUVs        = createBuffer(gl)
++  var pointSizes      = createBuffer(gl)
++  var pointIds        = createBuffer(gl)
++  var pointVAO        = createVAO(gl, [
++    { buffer: pointPositions,
++      type: gl.FLOAT,
++      size: 3
++    },
++    { buffer: pointIds,
++      type: gl.UNSIGNED_BYTE,
++      size: 4,
++      normalized: true
++    },
++    { buffer: pointColors,
++      type: gl.FLOAT,
++      size: 4
++    },
++    { buffer: pointUVs,
++      type: gl.FLOAT,
++      size: 2
++    },
++    { buffer: pointSizes,
++      type: gl.FLOAT,
++      size: 1
++    }
++  ])
+ 
+-  return pointCloud
+-}
++  var contourPositions = createBuffer(gl)
++  var contourVAO       = createVAO(gl, [
++    { buffer: contourPositions,
++      type:   gl.FLOAT,
++      size:   3
++    }])
+ 
+-},{"./lib/glyphs":197,"./lib/shaders":198,"gl-buffer":124,"gl-mat4/multiply":145,"gl-vao":232,"typedarray-pool":458}],200:[function(require,module,exports){
+-'use strict'
++  var mesh = new SimplicialMesh(gl
++    , meshTexture
++    , triShader
++    , lineShader
++    , pointShader
++    , pickShader
++    , pointPickShader
++    , contourShader
++    , trianglePositions
++    , triangleIds
++    , triangleColors
++    , triangleUVs
++    , triangleNormals
++    , triangleVAO
++    , edgePositions
++    , edgeIds
++    , edgeColors
++    , edgeUVs
++    , edgeVAO
++    , pointPositions
++    , pointIds
++    , pointColors
++    , pointUVs
++    , pointSizes
++    , pointVAO
++    , contourPositions
++    , contourVAO)
+ 
++  mesh.update(params)
+ 
++  return mesh
++}
+ 
+-exports.boxVertex = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n"
+-exports.boxFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"
++module.exports = createSimplicialMesh
+ 
+-},{}],201:[function(require,module,exports){
++},{"./lib/closest-point":164,"./lib/shaders":165,"colormap":75,"gl-buffer":121,"gl-mat4/invert":142,"gl-mat4/multiply":144,"gl-shader":190,"gl-texture2d":202,"gl-vao":206,"ndarray":385,"normals":387,"simplicial-complex-contour":427,"typedarray-pool":449}],167:[function(require,module,exports){
+ 'use strict'
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-
+-var SHADERS = require('./lib/shaders')
+-
+-module.exports = createSelectBox
+-
+-function SelectBox(plot, boxBuffer, boxShader) {
+-  this.plot = plot
+-  this.boxBuffer = boxBuffer
+-  this.boxShader = boxShader
++module.exports = createBoxes
+ 
+-  this.enabled = true
++var createBuffer = require('gl-buffer')
++var createShader = require('gl-shader')
+ 
+-  this.selectBox = [Infinity,Infinity,-Infinity,-Infinity]
++var shaders = require('./shaders')
+ 
+-  this.borderColor = [0,0,0,1]
+-  this.innerFill   = false
+-  this.innerColor  = [0,0,0,0.25]
+-  this.outerFill   = true
+-  this.outerColor  = [0,0,0,0.5]
+-  this.borderWidth = 10
++function Boxes(plot, vbo, shader) {
++  this.plot   = plot
++  this.vbo    = vbo
++  this.shader = shader
+ }
+ 
+-var proto = SelectBox.prototype
+-
+-proto.draw = function() {
+-  if(!this.enabled) {
+-    return
+-  }
+-
+-  var plot         = this.plot
+-  var selectBox    = this.selectBox
+-  var lineWidth    = this.borderWidth
+-
+-  var innerFill    = this.innerFill
+-  var innerColor   = this.innerColor
+-  var outerFill    = this.outerFill
+-  var outerColor   = this.outerColor
+-  var borderColor  = this.borderColor
+-
+-  var boxes        = plot.box
+-  var screenBox    = plot.screenBox
+-  var dataBox      = plot.dataBox
+-  var viewBox      = plot.viewBox
+-  var pixelRatio   = plot.pixelRatio
+-
+-  //Map select box into pixel coordinates
+-  var loX = (selectBox[0]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
+-  var loY = (selectBox[1]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
+-  var hiX = (selectBox[2]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
+-  var hiY = (selectBox[3]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
+-
+-  loX = Math.max(loX, viewBox[0])
+-  loY = Math.max(loY, viewBox[1])
+-  hiX = Math.min(hiX, viewBox[2])
+-  hiY = Math.min(hiY, viewBox[3])
+-
+-  if(hiX < loX || hiY < loY) {
+-    return
+-  }
+-
+-  boxes.bind()
++var proto = Boxes.prototype
+ 
+-  //Draw box
+-  var screenWidth  = screenBox[2] - screenBox[0]
+-  var screenHeight = screenBox[3] - screenBox[1]
++proto.bind = function() {
++  var shader = this.shader
++  this.vbo.bind()
++  this.shader.bind()
++  shader.attributes.coord.pointer()
++  shader.uniforms.screenBox = this.plot.screenBox
++}
+ 
+-  if(this.outerFill) {
+-    boxes.drawBox(0, 0, screenWidth, loY, outerColor)
+-    boxes.drawBox(0, loY, loX, hiY, outerColor)
+-    boxes.drawBox(0, hiY, screenWidth, screenHeight, outerColor)
+-    boxes.drawBox(hiX, loY, screenWidth, hiY, outerColor)
+-  }
++proto.drawBox = (function() {
++  var lo = [0,0]
++  var hi = [0,0]
++  return function(loX, loY, hiX, hiY, color) {
++    var plot       = this.plot
++    var shader     = this.shader
++    var gl         = plot.gl
+ 
+-  if(this.innerFill) {
+-    boxes.drawBox(loX, loY, hiX, hiY, innerColor)
+-  }
++    lo[0] = loX
++    lo[1] = loY
++    hi[0] = hiX
++    hi[1] = hiY
+ 
+-  //Draw border
+-  if(lineWidth > 0) {
++    shader.uniforms.lo     = lo
++    shader.uniforms.hi     = hi
++    shader.uniforms.color  = color
+ 
+-    //Draw border
+-    var w = lineWidth * pixelRatio
+-    boxes.drawBox(loX-w, loY-w, hiX+w, loY+w, borderColor)
+-    boxes.drawBox(loX-w, hiY-w, hiX+w, hiY+w, borderColor)
+-    boxes.drawBox(loX-w, loY-w, loX+w, hiY+w, borderColor)
+-    boxes.drawBox(hiX-w, loY-w, hiX+w, hiY+w, borderColor)
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
+   }
+-}
+-
+-proto.update = function(options) {
+-  options = options || {}
+-
+-  this.innerFill    = !!options.innerFill
+-  this.outerFill    = !!options.outerFill
+-  this.innerColor   = (options.innerColor   || [0,0,0,0.5]).slice()
+-  this.outerColor   = (options.outerColor   || [0,0,0,0.5]).slice()
+-  this.borderColor  = (options.borderColor || [0,0,0,1]).slice()
+-  this.borderWidth  = options.borderWidth || 0
+-  this.selectBox    = (options.selectBox || this.selectBox).slice()
+-}
++}())
+ 
+ proto.dispose = function() {
+-  this.boxBuffer.dispose()
+-  this.boxShader.dispose()
+-  this.plot.removeOverlay(this)
++  this.vbo.dispose()
++  this.shader.dispose()
+ }
+ 
+-function createSelectBox(plot, options) {
+-  var gl = plot.gl
+-  var buffer = createBuffer(gl, [
+-    0, 0,
+-    0, 1,
+-    1, 0,
+-    1, 1 ])
+-  var shader = createShader(gl, SHADERS.boxVertex, SHADERS.boxFragment)
+-  var selectBox = new SelectBox(plot, buffer, shader)
+-  selectBox.update(options)
+-  plot.addOverlay(selectBox)
+-  return selectBox
++function createBoxes(plot) {
++  var gl  = plot.gl
++  var vbo = createBuffer(gl, [
++    0,0,
++    0,1,
++    1,0,
++    1,1])
++  var shader  = createShader(gl, shaders.boxVert, shaders.lineFrag)
++  return new Boxes(plot, vbo, shader)
+ }
+ 
+-},{"./lib/shaders":200,"gl-buffer":124,"gl-shader":203}],202:[function(require,module,exports){
++},{"./shaders":170,"gl-buffer":121,"gl-shader":190}],168:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createSelectBuffer
+-
+-var createFBO = require('gl-fbo')
+-var pool      = require('typedarray-pool')
+-var ndarray   = require('ndarray')
+-
+-var nextPow2  = require('bit-twiddle').nextPow2
+-
+-var selectRange = require('cwise/lib/wrapper')({"args":["array",{"offset":[0,0,1],"array":0},{"offset":[0,0,2],"array":0},{"offset":[0,0,3],"array":0},"scalar","scalar","index"],"pre":{"body":"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"body":{"body":"{if(255>_inline_49_arg0_||255>_inline_49_arg1_||255>_inline_49_arg2_||255>_inline_49_arg3_){var _inline_49_l=_inline_49_arg4_-_inline_49_arg6_[0],_inline_49_a=_inline_49_arg5_-_inline_49_arg6_[1],_inline_49_f=_inline_49_l*_inline_49_l+_inline_49_a*_inline_49_a;_inline_49_f<this_closestD2&&(this_closestD2=_inline_49_f,this_closestX=_inline_49_arg6_[0],this_closestY=_inline_49_arg6_[1])}}","args":[{"name":"_inline_49_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg4_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg5_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg6_","lvalue":false,"rvalue":true,"count":4}],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":["_inline_49_a","_inline_49_f","_inline_49_l"]},"post":{"body":"{return[this_closestX,this_closestY,this_closestD2]}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
+-
+-function SelectResult(x, y, id, value, distance) {
+-  this.coord = [x, y]
+-  this.id = id
+-  this.value = value
+-  this.distance = distance
+-}
++module.exports = createGrid
+ 
+-function SelectBuffer(gl, fbo, buffer) {
+-  this.gl     = gl
+-  this.fbo    = fbo
+-  this.buffer = buffer
+-  this._readTimeout = null
+-  var self = this
++var createBuffer  = require('gl-buffer')
++var createShader  = require('gl-shader')
++var bsearch       = require('binary-search-bounds')
++var shaders       = require('./shaders')
+ 
+-  this._readCallback = function() {
+-    if(!self.gl) {
+-      return
+-    }
+-    fbo.bind()
+-    gl.readPixels(0,0,fbo.shape[0],fbo.shape[1],gl.RGBA,gl.UNSIGNED_BYTE,self.buffer)
+-    self._readTimeout = null
+-  }
++function Grid(plot, vbo, shader, tickShader) {
++  this.plot   = plot
++  this.vbo    = vbo
++  this.shader = shader
++  this.tickShader = tickShader
++  this.ticks  = [[], []]
+ }
+ 
+-var proto = SelectBuffer.prototype
+-
+-Object.defineProperty(proto, 'shape', {
+-  get: function() {
+-    if(!this.gl) {
+-      return [0,0]
+-    }
+-    return this.fbo.shape.slice()
+-  },
+-  set: function(v) {
+-    if(!this.gl) {
+-      return
+-    }
+-    this.fbo.shape = v
+-    var c = this.fbo.shape[0]
+-    var r = this.fbo.shape[1]
+-    if(r*c*4 > this.buffer.length) {
+-      pool.free(this.buffer)
+-      var buffer = this.buffer = pool.mallocUint8(nextPow2(r*c*4))
+-      for(var i=0; i<r*c*4; ++i) {
+-        buffer[i] = 0xff
+-      }
+-    }
+-    return v
+-  }
+-})
+-
+-proto.begin = function() {
+-  var gl = this.gl
+-  var shape = this.shape
+-  if(!gl) {
+-    return
+-  }
+-
+-  this.fbo.bind()
+-  gl.clearColor(1,1,1,1)
+-  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
++function compareTickNum(a, b) {
++  return a - b
+ }
+ 
+-proto.end = function() {
+-  var gl = this.gl
+-  if(!gl) {
+-    return
+-  }
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-  if(!this._readTimeout) {
+-    clearTimeout(this._readTimeout)
+-  }
+-  this._readTimeout = setTimeout(this._readCallback, 1)
+-}
++var proto = Grid.prototype
+ 
+-proto.query = function(x, y, radius) {
+-  if(!this.gl) {
+-    return null
+-  }
++proto.draw = (function() {
+ 
+-  var shape = this.fbo.shape.slice()
++  var DATA_SHIFT = [0,0]
++  var DATA_SCALE = [0,0]
++  var DATA_AXIS  = [0,0]
+ 
+-  x = x|0
+-  y = y|0
+-  if(typeof radius !== 'number') {
+-    radius = 1.0
+-  }
++  return function() {
++    var plot       = this.plot
++    var vbo        = this.vbo
++    var shader     = this.shader
++    var ticks      = this.ticks
++    var gl         = plot.gl
++    var bounds     = plot._tickBounds
++    var dataBox    = plot.dataBox
++    var viewPixels = plot.viewBox
++    var lineWidth  = plot.gridLineWidth
++    var gridColor  = plot.gridLineColor
++    var gridEnable = plot.gridLineEnable
++    var pixelRatio = plot.pixelRatio
+ 
+-  var x0 = Math.min(Math.max(x - radius, 0), shape[0])|0
+-  var x1 = Math.min(Math.max(x + radius, 0), shape[0])|0
+-  var y0 = Math.min(Math.max(y - radius, 0), shape[1])|0
+-  var y1 = Math.min(Math.max(y + radius, 0), shape[1])|0
++    for(var i=0; i<2; ++i) {
++      var lo = bounds[i]
++      var hi = bounds[i+2]
++      var boundScale = hi - lo
++      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
++      var dataWidth   = dataBox[i+2] - dataBox[i]
++      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
++      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
++    }
+ 
+-  if(x1 <= x0 || y1 <= y0) {
+-    return null
+-  }
++    shader.bind()
++    vbo.bind()
++    shader.attributes.dataCoord.pointer()
++    shader.uniforms.dataShift = DATA_SHIFT
++    shader.uniforms.dataScale = DATA_SCALE
+ 
+-  var dims   = [x1-x0,y1-y0]
+-  var region = ndarray(
+-    this.buffer,
+-    [dims[0], dims[1], 4],
+-    [4, shape[0]*4, 1],
+-    4*(x0 + shape[0]*y0));
++    var offset = 0
++    for(var i=0; i<2; ++i) {
++      DATA_AXIS[0] = DATA_AXIS[1] = 0
++      DATA_AXIS[i] = 1
++      shader.uniforms.dataAxis  = DATA_AXIS
++      shader.uniforms.lineWidth = lineWidth[i] / (viewPixels[i+2] - viewPixels[i]) * pixelRatio
++      shader.uniforms.color     = gridColor[i]
+ 
+-  var closest = selectRange(region.hi(dims[0],dims[1],1), radius, radius)
+-  var dx = closest[0]
+-  var dy = closest[1]
+-  if(dx < 0 || Math.pow(this.radius, 2) < closest[2]) {
+-    return null
++      var size = ticks[i].length * 6
++      if(gridEnable[i] && size) {
++        gl.drawArrays(gl.TRIANGLES, offset, size)
++      }
++      offset += size
++    }
+   }
++})()
+ 
+-  var c0 = region.get(dx, dy, 0)
+-  var c1 = region.get(dx, dy, 1)
+-  var c2 = region.get(dx, dy, 2)
+-  var c3 = region.get(dx, dy, 3)
++proto.drawTickMarks = (function() {
++  var DATA_SHIFT = [0,0]
++  var DATA_SCALE = [0,0]
++  var X_AXIS     = [1,0]
++  var Y_AXIS     = [0,1]
++  var SCR_OFFSET = [0,0]
++  var TICK_SCALE = [0,0]
+ 
+-  return new SelectResult(
+-     (dx + x0)|0,
+-     (dy + y0)|0,
+-     c0,
+-     [c1, c2, c3],
+-     Math.sqrt(closest[2]))
+-}
++  return function() {
++    var plot       = this.plot
++    var vbo        = this.vbo
++    var shader     = this.tickShader
++    var ticks      = this.ticks
++    var gl         = plot.gl
++    var bounds     = plot._tickBounds
++    var dataBox    = plot.dataBox
++    var viewBox    = plot.viewBox
++    var pixelRatio = plot.pixelRatio
++    var screenBox  = plot.screenBox
+ 
+-proto.dispose = function() {
+-  if(!this.gl) {
+-    return
+-  }
+-  this.fbo.dispose()
+-  pool.free(this.buffer)
+-  this.gl = null
+-  if(this._readTimeout) {
+-    clearTimeout(this._readTimeout)
+-  }
+-}
++    var screenWidth  = screenBox[2] - screenBox[0]
++    var screenHeight = screenBox[3] - screenBox[1]
++    var viewWidth    = viewBox[2]   - viewBox[0]
++    var viewHeight   = viewBox[3]   - viewBox[1]
+ 
+-function createSelectBuffer(gl, shape) {
+-  var fbo = createFBO(gl, shape)
+-  var buffer = pool.mallocUint8(shape[0]*shape[1]*4)
+-  return new SelectBuffer(gl, fbo, buffer)
+-}
++    for(var i=0; i<2; ++i) {
++      var lo = bounds[i]
++      var hi = bounds[i+2]
++      var boundScale = hi - lo
++      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
++      var dataWidth   = (dataBox[i+2] - dataBox[i])
++      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
++      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
++    }
+ 
+-},{"bit-twiddle":51,"cwise/lib/wrapper":118,"gl-fbo":129,"ndarray":433,"typedarray-pool":458}],203:[function(require,module,exports){
+-'use strict'
++    DATA_SCALE[0] *= viewWidth / screenWidth
++    DATA_SHIFT[0] *= viewWidth / screenWidth
+ 
+-var createUniformWrapper   = require('./lib/create-uniforms')
+-var createAttributeWrapper = require('./lib/create-attributes')
+-var makeReflect            = require('./lib/reflect')
+-var shaderCache            = require('./lib/shader-cache')
+-var runtime                = require('./lib/runtime-reflect')
+-var GLError                = require("./lib/GLError")
++    DATA_SCALE[1] *= viewHeight / screenHeight
++    DATA_SHIFT[1] *= viewHeight / screenHeight
+ 
+-//Shader object
+-function Shader(gl) {
+-  this.gl         = gl
++    shader.bind()
++    vbo.bind()
+ 
+-  //Default initialize these to null
+-  this._vref      =
+-  this._fref      =
+-  this._relink    =
+-  this.vertShader =
+-  this.fragShader =
+-  this.program    =
+-  this.attributes =
+-  this.uniforms   =
+-  this.types      = null
+-}
++    shader.attributes.dataCoord.pointer()
+ 
+-var proto = Shader.prototype
++    var uniforms = shader.uniforms
++    uniforms.dataShift = DATA_SHIFT
++    uniforms.dataScale = DATA_SCALE
+ 
+-proto.bind = function() {
+-  if(!this.program) {
+-    this._relink()
+-  }
+-  this.gl.useProgram(this.program)
+-}
++    var tickMarkLength = plot.tickMarkLength
++    var tickMarkWidth  = plot.tickMarkWidth
++    var tickMarkColor  = plot.tickMarkColor
+ 
+-proto.dispose = function() {
+-  if(this._fref) {
+-    this._fref.dispose()
+-  }
+-  if(this._vref) {
+-    this._vref.dispose()
+-  }
+-  this.attributes =
+-  this.types      =
+-  this.vertShader =
+-  this.fragShader =
+-  this.program    =
+-  this._relink    =
+-  this._fref      =
+-  this._vref      = null
+-}
++    var xTicksOffset = 0
++    var yTicksOffset = ticks[0].length * 6
+ 
+-function compareAttributes(a, b) {
+-  if(a.name < b.name) {
+-    return -1
+-  }
+-  return 1
+-}
++    var xStart = Math.min(bsearch.ge(ticks[0], (dataBox[0] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
++    var xEnd   = Math.min(bsearch.gt(ticks[0], (dataBox[2] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
++    var xOffset = xTicksOffset + 6 * xStart
++    var xCount  = 6 * Math.max(0, xEnd - xStart)
+ 
+-//Update export hook for glslify-live
+-proto.update = function(
+-    vertSource
+-  , fragSource
+-  , uniforms
+-  , attributes) {
++    var yStart = Math.min(bsearch.ge(ticks[1], (dataBox[1] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
++    var yEnd   = Math.min(bsearch.gt(ticks[1], (dataBox[3] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
++    var yOffset = yTicksOffset + 6 * yStart
++    var yCount  = 6 * Math.max(0, yEnd - yStart)
+ 
+-  //If only one object passed, assume glslify style output
+-  if(!fragSource || arguments.length === 1) {
+-    var obj = vertSource
+-    vertSource = obj.vertex
+-    fragSource = obj.fragment
+-    uniforms   = obj.uniforms
+-    attributes = obj.attributes
+-  }
++    SCR_OFFSET[0]         = 2.0 * (viewBox[0] - tickMarkLength[1]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkLength[1] * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkWidth[1]  * pixelRatio / screenHeight
+ 
+-  var wrapper = this
+-  var gl      = wrapper.gl
++    if(yCount) {
++      uniforms.color        = tickMarkColor[1]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = Y_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
++    }
+ 
+-  //Compile vertex and fragment shaders
+-  var pvref = wrapper._vref
+-  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
+-  if(pvref) {
+-    pvref.dispose()
+-  }
+-  wrapper.vertShader = wrapper._vref.shader
+-  var pfref = this._fref
+-  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
+-  if(pfref) {
+-    pfref.dispose()
+-  }
+-  wrapper.fragShader = wrapper._fref.shader
++    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = 2.0 * (viewBox[1] - tickMarkLength[0]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkWidth[0]  * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkLength[0] * pixelRatio / screenHeight
+ 
+-  //If uniforms/attributes is not specified, use RT reflection
+-  if(!uniforms || !attributes) {
++    if(xCount) {
++      uniforms.color        = tickMarkColor[0]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = X_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
++    }
+ 
+-    //Create initial test program
+-    var testProgram = gl.createProgram()
+-    gl.attachShader(testProgram, wrapper.fragShader)
+-    gl.attachShader(testProgram, wrapper.vertShader)
+-    gl.linkProgram(testProgram)
+-    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
+-      var errLog = gl.getProgramInfoLog(testProgram)
+-      throw new GLError(errLog, 'Error linking program:' + errLog)
++    SCR_OFFSET[0]         = 2.0 * (viewBox[2] + tickMarkLength[3]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkLength[3] * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkWidth[3]  * pixelRatio / screenHeight
++
++    if(yCount) {
++      uniforms.color        = tickMarkColor[3]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = Y_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
+     }
+ 
+-    //Load data from runtime
+-    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
+-    attributes = attributes || runtime.attributes(gl, testProgram)
++    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = 2.0 * (viewBox[3] + tickMarkLength[2]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkWidth[2]  * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkLength[2] * pixelRatio / screenHeight
+ 
+-    //Release test program
+-    gl.deleteProgram(testProgram)
++    if(xCount) {
++      uniforms.color        = tickMarkColor[2]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = X_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
++    }
+   }
++})()
+ 
+-  //Sort attributes lexicographically
+-  // overrides undefined WebGL behavior for attribute locations
+-  attributes = attributes.slice()
+-  attributes.sort(compareAttributes)
++proto.update = (function() {
++  var OFFSET_X = [1,  1, -1, -1,  1, -1]
++  var OFFSET_Y = [1, -1,  1,  1, -1, -1]
+ 
+-  //Convert attribute types, read out locations
+-  var attributeUnpacked  = []
+-  var attributeNames     = []
+-  var attributeLocations = []
+-  for(var i=0; i<attributes.length; ++i) {
+-    var attr = attributes[i]
+-    if(attr.type.indexOf('mat') >= 0) {
+-      var size = attr.type.charAt(attr.type.length-1)|0
+-      var locVector = new Array(size)
+-      for(var j=0; j<size; ++j) {
+-        locVector[j] = attributeLocations.length
+-        attributeNames.push(attr.name + '[' + j + ']')
+-        if(typeof attr.location === 'number') {
+-          attributeLocations.push(attr.location + j)
+-        } else if(Array.isArray(attr.location) &&
+-                  attr.location.length === size &&
+-                  typeof attr.location[j] === 'number') {
+-          attributeLocations.push(attr.location[j]|0)
+-        } else {
+-          attributeLocations.push(-1)
++  return function(options) {
++    var ticks  = options.ticks
++    var bounds = options.bounds
++    var data   = new Float32Array(6 * 3 * (ticks[0].length + ticks[1].length))
++
++    var zeroLineEnable = this.plot.zeroLineEnable
++
++    var ptr    = 0
++    var gridTicks = [[], []]
++    for(var dim=0; dim<2; ++dim) {
++      var localTicks = gridTicks[dim]
++      var axisTicks = ticks[dim]
++      var lo = bounds[dim]
++      var hi = bounds[dim+2]
++      for(var i=0; i<axisTicks.length; ++i) {
++        var x = (axisTicks[i].x - lo) / (hi - lo)
++        localTicks.push(x)
++        for(var j=0; j<6; ++j) {
++          data[ptr++] = x
++          data[ptr++] = OFFSET_X[j]
++          data[ptr++] = OFFSET_Y[j]
+         }
+       }
+-      attributeUnpacked.push({
+-        name: attr.name,
+-        type: attr.type,
+-        locations: locVector
+-      })
+-    } else {
+-      attributeUnpacked.push({
+-        name: attr.name,
+-        type: attr.type,
+-        locations: [ attributeLocations.length ]
+-      })
+-      attributeNames.push(attr.name)
+-      if(typeof attr.location === 'number') {
+-        attributeLocations.push(attr.location|0)
+-      } else {
+-        attributeLocations.push(-1)
+-      }
+     }
+-  }
+ 
+-  //For all unspecified attributes, assign them lexicographically min attribute
+-  var curLocation = 0
+-  for(var i=0; i<attributeLocations.length; ++i) {
+-    if(attributeLocations[i] < 0) {
+-      while(attributeLocations.indexOf(curLocation) >= 0) {
+-        curLocation += 1
+-      }
+-      attributeLocations[i] = curLocation
+-    }
++    this.ticks = gridTicks
++    this.vbo.update(data)
+   }
++})()
+ 
+-  //Rebuild program and recompute all uniform locations
+-  var uniformLocations = new Array(uniforms.length)
+-  function relink() {
+-    wrapper.program = shaderCache.program(
+-        gl
+-      , wrapper._vref
+-      , wrapper._fref
+-      , attributeNames
+-      , attributeLocations)
++proto.dispose = function() {
++  this.vbo.dispose()
++  this.shader.dispose()
++  this.tickShader.dispose()
++}
+ 
+-    for(var i=0; i<uniforms.length; ++i) {
+-      uniformLocations[i] = gl.getUniformLocation(
+-          wrapper.program
+-        , uniforms[i].name)
+-    }
+-  }
++function createGrid(plot) {
++  var gl     = plot.gl
++  var vbo    = createBuffer(gl)
++  var shader = createShader(gl, shaders.gridVert, shaders.gridFrag)
++  var tickShader = createShader(gl, shaders.tickVert, shaders.gridFrag)
++  var grid   = new Grid(plot, vbo, shader, tickShader)
++  return grid
++}
+ 
+-  //Perform initial linking, reuse program used for reflection
+-  relink()
++},{"./shaders":170,"binary-search-bounds":172,"gl-buffer":121,"gl-shader":190}],169:[function(require,module,exports){
++'use strict'
+ 
+-  //Save relinking procedure, defer until runtime
+-  wrapper._relink = relink
++module.exports = createLines
+ 
+-  //Generate type info
+-  wrapper.types = {
+-    uniforms:   makeReflect(uniforms),
+-    attributes: makeReflect(attributes)
+-  }
++var createBuffer = require('gl-buffer')
++var createShader = require('gl-shader')
+ 
+-  //Generate attribute wrappers
+-  wrapper.attributes = createAttributeWrapper(
+-      gl
+-    , wrapper
+-    , attributeUnpacked
+-    , attributeLocations)
++var shaders = require('./shaders')
+ 
+-  //Generate uniform wrappers
+-  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
+-      gl
+-    , wrapper
+-    , uniforms
+-    , uniformLocations))
++function Lines(plot, vbo, shader) {
++  this.plot   = plot
++  this.vbo    = vbo
++  this.shader = shader
+ }
+ 
+-//Compiles and links a shader program with the given attribute and vertex list
+-function createShader(
+-    gl
+-  , vertSource
+-  , fragSource
+-  , uniforms
+-  , attributes) {
++var proto = Lines.prototype
+ 
+-  var shader = new Shader(gl)
++proto.bind = function() {
++  var shader = this.shader
++  this.vbo.bind()
++  this.shader.bind()
++  shader.attributes.coord.pointer()
++  shader.uniforms.screenBox = this.plot.screenBox
++}
+ 
+-  shader.update(
+-      vertSource
+-    , fragSource
+-    , uniforms
+-    , attributes)
++proto.drawLine = (function() {
++  var start = [0,0]
++  var end   = [0,0]
++  return function(startX, startY, endX, endY, width, color) {
++    var plot       = this.plot
++    var shader     = this.shader
++    var gl         = plot.gl
+ 
+-  return shader
+-}
++    start[0] = startX
++    start[1] = startY
++    end[0]   = endX
++    end[1]   = endY
+ 
+-module.exports = createShader
++    shader.uniforms.start  = start
++    shader.uniforms.end    = end
++    shader.uniforms.width  = width * plot.pixelRatio
++    shader.uniforms.color  = color
+ 
+-},{"./lib/GLError":204,"./lib/create-attributes":205,"./lib/create-uniforms":206,"./lib/reflect":207,"./lib/runtime-reflect":208,"./lib/shader-cache":209}],204:[function(require,module,exports){
+-function GLError (rawError, shortMessage, longMessage) {
+-    this.shortMessage = shortMessage || ''
+-    this.longMessage = longMessage || ''
+-    this.rawError = rawError || ''
+-    this.message =
+-      'gl-shader: ' + (shortMessage || rawError || '') +
+-      (longMessage ? '\n'+longMessage : '')
+-    this.stack = (new Error()).stack
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
++  }
++}())
++
++proto.dispose = function() {
++  this.vbo.dispose()
++  this.shader.dispose()
++}
++
++function createLines(plot) {
++  var gl  = plot.gl
++  var vbo = createBuffer(gl, [
++    -1,-1,
++    -1,1,
++    1,-1,
++    1,1])
++  var shader  = createShader(gl, shaders.lineVert, shaders.lineFrag)
++  var lines   = new Lines(plot, vbo, shader)
++  return lines
+ }
+-GLError.prototype = new Error
+-GLError.prototype.name = 'GLError'
+-GLError.prototype.constructor = GLError
+-module.exports = GLError
+ 
+-},{}],205:[function(require,module,exports){
++},{"./shaders":170,"gl-buffer":121,"gl-shader":190}],170:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createAttributeWrapper
+ 
+-var GLError = require("./GLError")
+ 
+-function ShaderAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , constFunc) {
+-  this._gl        = gl
+-  this._wrapper   = wrapper
+-  this._index     = index
+-  this._locations = locations
+-  this._dimension = dimension
+-  this._constFunc = constFunc
++var FRAGMENT = "precision lowp float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = vec4(color.xyz * color.w, color.w);\n}\n"
++
++module.exports = {
++  lineVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 start, end;\nuniform float width;\n\nvec2 perp(vec2 v) {\n  return vec2(v.y, -v.x);\n}\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  vec2 delta = normalize(perp(start - end));\n  vec2 offset = mix(start, end, 0.5 * (coord.y+1.0));\n  gl_Position = vec4(screen(offset + 0.5 * width * delta * coord.x), 0, 1);\n}\n",
++  lineFrag: FRAGMENT,
++  textVert: "#define GLSLIFY 1\nattribute vec3 textCoordinate;\n\nuniform vec2 dataScale, dataShift, dataAxis, screenOffset, textScale;\nuniform float angle;\n\nvoid main() {\n  float dataOffset  = textCoordinate.z;\n  vec2 glyphOffset  = textCoordinate.xy;\n  mat2 glyphMatrix = mat2(cos(angle), sin(angle), -sin(angle), cos(angle));\n  vec2 screenCoordinate = dataAxis * (dataScale * dataOffset + dataShift) +\n    glyphMatrix * glyphOffset * textScale + screenOffset;\n  gl_Position = vec4(screenCoordinate, 0, 1);\n}\n",
++  textFrag: FRAGMENT,
++  gridVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale;\nuniform float lineWidth;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  pos += 10.0 * dataCoord.y * vec2(dataAxis.y, -dataAxis.x) + dataCoord.z * lineWidth;\n  gl_Position = vec4(pos, 0, 1);\n}\n",
++  gridFrag: FRAGMENT,
++  boxVert:  "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 lo, hi;\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  gl_Position = vec4(screen(mix(lo, hi, coord)), 0, 1);\n}\n",
++  tickVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale, screenOffset, tickScale;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  gl_Position = vec4(pos + tickScale*dataCoord.yz + screenOffset, 0, 1);\n}\n"
+ }
+ 
+-var proto = ShaderAttribute.prototype
++},{}],171:[function(require,module,exports){
++'use strict'
+ 
+-proto.pointer = function setAttribPointer(
+-    type
+-  , normalized
+-  , stride
+-  , offset) {
++module.exports = createTextElements
+ 
+-  var self      = this
+-  var gl        = self._gl
+-  var location  = self._locations[self._index]
++var createBuffer = require('gl-buffer')
++var createShader = require('gl-shader')
++var getText      = require('text-cache')
++var bsearch      = require('binary-search-bounds')
++var shaders      = require('./shaders')
+ 
+-  gl.vertexAttribPointer(
+-      location
+-    , self._dimension
+-    , type || gl.FLOAT
+-    , !!normalized
+-    , stride || 0
+-    , offset || 0)
+-  gl.enableVertexAttribArray(location)
++function TextElements(plot, vbo, shader) {
++  this.plot         = plot
++  this.vbo          = vbo
++  this.shader       = shader
++  this.tickOffset   = [[],[]]
++  this.tickX        = [[],[]]
++  this.labelOffset  = [0,0]
++  this.labelCount   = [0,0]
+ }
+ 
+-proto.set = function(x0, x1, x2, x3) {
+-  return this._constFunc(this._locations[this._index], x0, x1, x2, x3)
+-}
++var proto = TextElements.prototype
+ 
+-Object.defineProperty(proto, 'location', {
+-  get: function() {
+-    return this._locations[this._index]
+-  }
+-  , set: function(v) {
+-    if(v !== this._locations[this._index]) {
+-      this._locations[this._index] = v|0
+-      this._wrapper.program = null
+-    }
+-    return v|0
+-  }
+-})
++proto.drawTicks = (function() {
++  var DATA_AXIS = [0,0]
++  var SCREEN_OFFSET = [0,0]
++  var ZERO_2 = [0,0]
+ 
+-//Adds a vector attribute to obj
+-function addVectorAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , obj
+-  , name) {
++  return function(axis) {
++    var plot        = this.plot
++    var shader      = this.shader
++    var tickX       = this.tickX[axis]
++    var tickOffset  = this.tickOffset[axis]
++    var gl          = plot.gl
++    var viewBox     = plot.viewBox
++    var dataBox     = plot.dataBox
++    var screenBox   = plot.screenBox
++    var pixelRatio  = plot.pixelRatio
++    var tickEnable  = plot.tickEnable
++    var tickPad     = plot.tickPad
++    var textColor   = plot.tickColor
++    var textAngle   = plot.tickAngle
++    var tickLength  = plot.tickMarkLength
+ 
+-  //Construct constant function
+-  var constFuncArgs = [ 'gl', 'v' ]
+-  var varNames = []
+-  for(var i=0; i<dimension; ++i) {
+-    constFuncArgs.push('x'+i)
+-    varNames.push('x'+i)
+-  }
+-  constFuncArgs.push(
+-    'if(x0.length===void 0){return gl.vertexAttrib' +
+-    dimension + 'f(v,' +
+-    varNames.join() +
+-    ')}else{return gl.vertexAttrib' +
+-    dimension +
+-    'fv(v,x0)}')
+-  var constFunc = Function.apply(null, constFuncArgs)
++    var labelEnable = plot.labelEnable
++    var labelPad    = plot.labelPad
++    var labelColor  = plot.labelColor
++    var labelAngle  = plot.labelAngle
++    var labelOffset = this.labelOffset[axis]
++    var labelCount  = this.labelCount[axis]
+ 
+-  //Create attribute wrapper
+-  var attr = new ShaderAttribute(
+-      gl
+-    , wrapper
+-    , index
+-    , locations
+-    , dimension
+-    , constFunc)
++    var start = bsearch.lt(tickX, dataBox[axis])
++    var end   = bsearch.le(tickX, dataBox[axis+2])
+ 
+-  //Create accessor
+-  Object.defineProperty(obj, name, {
+-    set: function(x) {
+-      gl.disableVertexAttribArray(locations[index])
+-      constFunc(gl, locations[index], x)
+-      return x
+-    }
+-    , get: function() {
+-      return attr
+-    }
+-    , enumerable: true
+-  })
+-}
++    DATA_AXIS[0]    = DATA_AXIS[1] = 0
++    DATA_AXIS[axis] = 1
+ 
+-function addMatrixAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , obj
+-  , name) {
++    SCREEN_OFFSET[axis] = (viewBox[2+axis] + viewBox[axis]) / (screenBox[2+axis] - screenBox[axis]) - 1.0
+ 
+-  var parts = new Array(dimension)
+-  var attrs = new Array(dimension)
+-  for(var i=0; i<dimension; ++i) {
+-    addVectorAttribute(
+-        gl
+-      , wrapper
+-      , index[i]
+-      , locations
+-      , dimension
+-      , parts
+-      , i)
+-    attrs[i] = parts[i]
+-  }
++    var screenScale = 2.0 / screenBox[2+(axis^1)] - screenBox[axis^1]
+ 
+-  Object.defineProperty(parts, 'location', {
+-    set: function(v) {
+-      if(Array.isArray(v)) {
+-        for(var i=0; i<dimension; ++i) {
+-          attrs[i].location = v[i]
+-        }
+-      } else {
+-        for(var i=0; i<dimension; ++i) {
+-          attrs[i].location = v + i
+-        }
++    SCREEN_OFFSET[axis^1] = screenScale * viewBox[axis^1] - 1.0
++    if(tickEnable[axis]) {
++      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * tickPad[axis]
++      if(start < end && tickOffset[end] > tickOffset[start]) {
++        shader.uniforms.dataAxis     = DATA_AXIS
++        shader.uniforms.screenOffset = SCREEN_OFFSET
++        shader.uniforms.color        = textColor[axis]
++        shader.uniforms.angle        = textAngle[axis]
++        gl.drawArrays(
++          gl.TRIANGLES,
++          tickOffset[start],
++          tickOffset[end] - tickOffset[start])
+       }
+-      return v
+     }
+-    , get: function() {
+-      var result = new Array(dimension)
+-      for(var i=0; i<dimension; ++i) {
+-        result[i] = locations[index[i]]
+-      }
+-      return result
++    if(labelEnable[axis] && labelCount) {
++      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * labelPad[axis]
++      shader.uniforms.dataAxis     = ZERO_2
++      shader.uniforms.screenOffset = SCREEN_OFFSET
++      shader.uniforms.color        = labelColor[axis]
++      shader.uniforms.angle        = labelAngle[axis]
++      gl.drawArrays(
++        gl.TRIANGLES,
++        labelOffset,
++        labelCount)
+     }
+-    , enumerable: true
+-  })
+ 
+-  parts.pointer = function(type, normalized, stride, offset) {
+-    type       = type || gl.FLOAT
+-    normalized = !!normalized
+-    stride     = stride || (dimension * dimension)
+-    offset     = offset || 0
+-    for(var i=0; i<dimension; ++i) {
+-      var location = locations[index[i]]
+-      gl.vertexAttribPointer(
+-            location
+-          , dimension
+-          , type
+-          , normalized
+-          , stride
+-          , offset + i * dimension)
+-      gl.enableVertexAttribArray(location)
++    SCREEN_OFFSET[axis^1] = screenScale * viewBox[2+(axis^1)] - 1.0
++    if(tickEnable[axis+2]) {
++      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * tickPad[axis+2]
++      if(start < end && tickOffset[end] > tickOffset[start]) {
++        shader.uniforms.dataAxis     = DATA_AXIS
++        shader.uniforms.screenOffset = SCREEN_OFFSET
++        shader.uniforms.color        = textColor[axis+2]
++        shader.uniforms.angle        = textAngle[axis+2]
++        gl.drawArrays(
++          gl.TRIANGLES,
++          tickOffset[start],
++          tickOffset[end] - tickOffset[start])
++      }
++    }
++    if(labelEnable[axis+2] && labelCount) {
++      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * labelPad[axis+2]
++      shader.uniforms.dataAxis     = ZERO_2
++      shader.uniforms.screenOffset = SCREEN_OFFSET
++      shader.uniforms.color        = labelColor[axis+2]
++      shader.uniforms.angle        = labelAngle[axis+2]
++      gl.drawArrays(
++        gl.TRIANGLES,
++        labelOffset,
++        labelCount)
+     }
++
+   }
++})()
+ 
+-  var scratch = new Array(dimension)
+-  var vertexAttrib = gl['vertexAttrib' + dimension + 'fv']
++proto.drawTitle = (function() {
++  var DATA_AXIS = [0,0]
++  var SCREEN_OFFSET = [0,0]
+ 
+-  Object.defineProperty(obj, name, {
+-    set: function(x) {
+-      for(var i=0; i<dimension; ++i) {
+-        var loc = locations[index[i]]
+-        gl.disableVertexAttribArray(loc)
+-        if(Array.isArray(x[0])) {
+-          vertexAttrib.call(gl, loc, x[i])
+-        } else {
+-          for(var j=0; j<dimension; ++j) {
+-            scratch[j] = x[dimension*i + j]
+-          }
+-          vertexAttrib.call(gl, loc, scratch)
+-        }
+-      }
+-      return x
++  return function() {
++    var plot        = this.plot
++    var shader      = this.shader
++    var gl          = plot.gl
++    var screenBox   = plot.screenBox
++    var titleCenter = plot.titleCenter
++    var titleAngle  = plot.titleAngle
++    var titleColor  = plot.titleColor
++    var titleCenter = plot.titleCenter
++    var pixelRatio  = plot.pixelRatio
++
++    if(!this.titleCount) {
++      return
+     }
+-    , get: function() {
+-      return parts
++
++    for(var i=0; i<2; ++i) {
++      SCREEN_OFFSET[i] = 2.0 * (titleCenter[i]*pixelRatio - screenBox[i]) /
++        (screenBox[2+i] - screenBox[i]) - 1
+     }
+-    , enumerable: true
+-  })
+-}
+ 
+-//Create shims for attributes
+-function createAttributeWrapper(
+-    gl
+-  , wrapper
+-  , attributes
+-  , locations) {
++    shader.bind()
++    shader.uniforms.dataAxis      = DATA_AXIS
++    shader.uniforms.screenOffset  = SCREEN_OFFSET
++    shader.uniforms.angle         = titleAngle
++    shader.uniforms.color         = titleColor
+ 
+-  var obj = {}
+-  for(var i=0, n=attributes.length; i<n; ++i) {
++    gl.drawArrays(gl.TRIANGLES, this.titleOffset, this.titleCount)
++  }
++})()
+ 
+-    var a = attributes[i]
+-    var name = a.name
+-    var type = a.type
+-    var locs = a.locations
++proto.bind = (function() {
++  var DATA_SHIFT = [0,0]
++  var DATA_SCALE = [0,0]
++  var TEXT_SCALE = [0,0]
+ 
+-    switch(type) {
+-      case 'bool':
+-      case 'int':
+-      case 'float':
+-        addVectorAttribute(
+-            gl
+-          , wrapper
+-          , locs[0]
+-          , locations
+-          , 1
+-          , obj
+-          , name)
+-      break
++  return function() {
++    var plot      = this.plot
++    var shader    = this.shader
++    var bounds    = plot._tickBounds
++    var dataBox   = plot.dataBox
++    var screenBox = plot.screenBox
++    var viewBox   = plot.viewBox
+ 
+-      default:
+-        if(type.indexOf('vec') >= 0) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
+-          }
+-          addVectorAttribute(
+-              gl
+-            , wrapper
+-            , locs[0]
+-            , locations
+-            , d
+-            , obj
+-            , name)
+-        } else if(type.indexOf('mat') >= 0) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
+-          }
+-          addMatrixAttribute(
+-              gl
+-            , wrapper
+-            , locs
+-            , locations
+-            , d
+-            , obj
+-            , name)
+-        } else {
+-          throw new GLError('', 'Unknown data type for attribute ' + name + ': ' + type)
+-        }
+-      break
+-    }
+-  }
+-  return obj
+-}
++    shader.bind()
+ 
+-},{"./GLError":204}],206:[function(require,module,exports){
+-'use strict'
++    //Set up coordinate scaling uniforms
++    for(var i=0; i<2; ++i) {
+ 
+-var coallesceUniforms = require('./reflect')
+-var GLError = require("./GLError")
++      var lo = bounds[i]
++      var hi = bounds[i+2]
++      var boundScale = hi - lo
++      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
++      var dataWidth   = (dataBox[i+2] - dataBox[i])
+ 
+-module.exports = createUniformWrapper
++      var viewLo = viewBox[i]
++      var viewHi = viewBox[i+2]
++      var viewScale = viewHi - viewLo
++      var screenLo = screenBox[i]
++      var screenHi = screenBox[i+2]
++      var screenScale = screenHi - screenLo
+ 
+-//Binds a function and returns a value
+-function identity(x) {
+-  var c = new Function('y', 'return function(){return y}')
+-  return c(x)
+-}
++      DATA_SCALE[i] = 2.0 * boundScale / dataWidth * viewScale / screenScale
++      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth * viewScale / screenScale
++    }
+ 
+-function makeVector(length, fill) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = fill
+-  }
+-  return result
+-}
++    TEXT_SCALE[1] = 2.0 * plot.pixelRatio / (screenBox[3] - screenBox[1])
++    TEXT_SCALE[0] = TEXT_SCALE[1] * (screenBox[3] - screenBox[1]) / (screenBox[2] - screenBox[0])
+ 
+-//Create shims for uniforms
+-function createUniformWrapper(gl, wrapper, uniforms, locations) {
++    shader.uniforms.dataScale = DATA_SCALE
++    shader.uniforms.dataShift = DATA_SHIFT
++    shader.uniforms.textScale = TEXT_SCALE
+ 
+-  function makeGetter(index) {
+-    var proc = new Function(
+-        'gl'
+-      , 'wrapper'
+-      , 'locations'
+-      , 'return function(){return gl.getUniform(wrapper.program,locations[' + index + '])}')
+-    return proc(gl, wrapper, locations)
++    //Set attributes
++    this.vbo.bind()
++    shader.attributes.textCoordinate.pointer()
+   }
++})()
+ 
+-  function makePropSetter(path, index, type) {
+-    switch(type) {
+-      case 'bool':
+-      case 'int':
+-      case 'sampler2D':
+-      case 'samplerCube':
+-        return 'gl.uniform1i(locations[' + index + '],obj' + path + ')'
+-      case 'float':
+-        return 'gl.uniform1f(locations[' + index + '],obj' + path + ')'
+-      default:
+-        var vidx = type.indexOf('vec')
+-        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type')
+-          }
+-          switch(type.charAt(0)) {
+-            case 'b':
+-            case 'i':
+-              return 'gl.uniform' + d + 'iv(locations[' + index + '],obj' + path + ')'
+-            case 'v':
+-              return 'gl.uniform' + d + 'fv(locations[' + index + '],obj' + path + ')'
+-            default:
+-              throw new GLError('', 'Unrecognized data type for vector ' + name + ': ' + type)
+-          }
+-        } else if(type.indexOf('mat') === 0 && type.length === 4) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
+-          }
+-          return 'gl.uniformMatrix' + d + 'fv(locations[' + index + '],false,obj' + path + ')'
+-        } else {
+-          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
+-        }
+-      break
+-    }
+-  }
++proto.update = function(options) {
++  var vertices  = []
++  var axesTicks = options.ticks
++  var bounds    = options.bounds
+ 
+-  function enumerateIndices(prefix, type) {
+-    if(typeof type !== 'object') {
+-      return [ [prefix, type] ]
+-    }
+-    var indices = []
+-    for(var id in type) {
+-      var prop = type[id]
+-      var tprefix = prefix
+-      if(parseInt(id) + '' === id) {
+-        tprefix += '[' + id + ']'
+-      } else {
+-        tprefix += '.' + id
+-      }
+-      if(typeof prop === 'object') {
+-        indices.push.apply(indices, enumerateIndices(tprefix, prop))
+-      } else {
+-        indices.push([tprefix, prop])
+-      }
+-    }
+-    return indices
+-  }
++  for(var dimension=0; dimension<2; ++dimension) {
++    var offsets = [Math.floor(vertices.length/3)], tickX = [-Infinity]
+ 
+-  function makeSetter(type) {
+-    var code = [ 'return function updateProperty(obj){' ]
+-    var indices = enumerateIndices('', type)
+-    for(var i=0; i<indices.length; ++i) {
+-      var item = indices[i]
+-      var path = item[0]
+-      var idx  = item[1]
+-      if(locations[idx]) {
+-        code.push(makePropSetter(path, idx, uniforms[idx].type))
+-      }
+-    }
+-    code.push('return obj}')
+-    var proc = new Function('gl', 'locations', code.join('\n'))
+-    return proc(gl, locations)
+-  }
++    //Copy vertices over to buffer
++    var ticks = axesTicks[dimension]
++    for(var i=0; i<ticks.length; ++i) {
++      var tick  = ticks[i]
++      var x     = tick.x
++      var text  = tick.text
++      var font  = tick.font || 'sans-serif'
++      var scale = (tick.fontSize || 12)
+ 
+-  function defaultValue(type) {
+-    switch(type) {
+-      case 'bool':
+-        return false
+-      case 'int':
+-      case 'sampler2D':
+-      case 'samplerCube':
+-        return 0
+-      case 'float':
+-        return 0.0
+-      default:
+-        var vidx = type.indexOf('vec')
+-        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type')
+-          }
+-          if(type.charAt(0) === 'b') {
+-            return makeVector(d, false)
+-          }
+-          return makeVector(d, 0)
+-        } else if(type.indexOf('mat') === 0 && type.length === 4) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
+-          }
+-          return makeVector(d*d, 0)
+-        } else {
+-          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
+-        }
+-      break
+-    }
+-  }
++      var data = getText(font, text).data
+ 
+-  function storeProperty(obj, prop, type) {
+-    if(typeof type === 'object') {
+-      var child = processObject(type)
+-      Object.defineProperty(obj, prop, {
+-        get: identity(child),
+-        set: makeSetter(type),
+-        enumerable: true,
+-        configurable: false
+-      })
+-    } else {
+-      if(locations[type]) {
+-        Object.defineProperty(obj, prop, {
+-          get: makeGetter(type),
+-          set: makeSetter(type),
+-          enumerable: true,
+-          configurable: false
+-        })
+-      } else {
+-        obj[prop] = defaultValue(uniforms[type].type)
++      var coordScale = 1.0 / (bounds[dimension+2] - bounds[dimension])
++      var coordShift = bounds[dimension]
++
++      for(var j=0; j<data.length; j+=2) {
++        vertices.push(
++           data[j]  *scale,
++          -data[j+1]*scale,
++          (x - coordShift) * coordScale)
+       }
++
++      offsets.push(Math.floor(vertices.length/3))
++      tickX.push(x)
+     }
++
++    this.tickOffset[dimension] = offsets
++    this.tickX[dimension] = tickX
+   }
+ 
+-  function processObject(obj) {
+-    var result
+-    if(Array.isArray(obj)) {
+-      result = new Array(obj.length)
+-      for(var i=0; i<obj.length; ++i) {
+-        storeProperty(result, i, obj[i])
+-      }
+-    } else {
+-      result = {}
+-      for(var id in obj) {
+-        storeProperty(result, id, obj[id])
+-      }
++  //Add labels
++  for(var dimension=0; dimension<2; ++dimension) {
++    this.labelOffset[dimension] = Math.floor(vertices.length/3)
++
++    var data  = getText(options.labelFont[dimension], options.labels[dimension]).data
++    var scale = options.labelSize[dimension]
++    for(var i=0; i<data.length; i+=2) {
++      vertices.push(data[i]*scale, -data[i+1]*scale, 0)
+     }
+-    return result
++
++    this.labelCount[dimension] =
++      Math.floor(vertices.length/3) - this.labelOffset[dimension]
+   }
+ 
+-  //Return data
+-  var coallesced = coallesceUniforms(uniforms, true)
+-  return {
+-    get: identity(processObject(coallesced)),
+-    set: makeSetter(coallesced),
+-    enumerable: true,
+-    configurable: true
++  //Add title
++  this.titleOffset = Math.floor(vertices.length/3)
++  var data = getText(options.titleFont, options.title).data
++  var scale = options.titleSize
++  for(var i=0; i<data.length; i+=2) {
++    vertices.push(data[i]*scale, -data[i+1]*scale, 0)
+   }
++  this.titleCount = Math.floor(vertices.length/3) - this.titleOffset
++
++  //Upload new vertices
++  this.vbo.update(vertices)
++}
++
++proto.dispose = function() {
++  this.vbo.dispose()
++  this.shader.dispose()
++}
++
++function createTextElements(plot) {
++  var gl = plot.gl
++  var vbo = createBuffer(gl)
++  var shader = createShader(gl, shaders.textVert, shaders.textFrag)
++  var text = new TextElements(plot, vbo, shader)
++  return text
+ }
+ 
+-},{"./GLError":204,"./reflect":207}],207:[function(require,module,exports){
++},{"./shaders":170,"binary-search-bounds":172,"gl-buffer":121,"gl-shader":190,"text-cache":441}],172:[function(require,module,exports){
++arguments[4][67][0].apply(exports,arguments)
++},{"dup":67}],173:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = makeReflectTypes
++module.exports = createGLPlot2D
+ 
+-//Construct type info for reflection.
+-//
+-// This iterates over the flattened list of uniform type values and smashes them into a JSON object.
+-//
+-// The leaves of the resulting object are either indices or type strings representing primitive glslify types
+-function makeReflectTypes(uniforms, useIndex) {
+-  var obj = {}
+-  for(var i=0; i<uniforms.length; ++i) {
+-    var n = uniforms[i].name
+-    var parts = n.split(".")
+-    var o = obj
+-    for(var j=0; j<parts.length; ++j) {
+-      var x = parts[j].split("[")
+-      if(x.length > 1) {
+-        if(!(x[0] in o)) {
+-          o[x[0]] = []
+-        }
+-        o = o[x[0]]
+-        for(var k=1; k<x.length; ++k) {
+-          var y = parseInt(x[k])
+-          if(k<x.length-1 || j<parts.length-1) {
+-            if(!(y in o)) {
+-              if(k < x.length-1) {
+-                o[y] = []
+-              } else {
+-                o[y] = {}
+-              }
+-            }
+-            o = o[y]
+-          } else {
+-            if(useIndex) {
+-              o[y] = i
+-            } else {
+-              o[y] = uniforms[i].type
+-            }
+-          }
+-        }
+-      } else if(j < parts.length-1) {
+-        if(!(x[0] in o)) {
+-          o[x[0]] = {}
+-        }
+-        o = o[x[0]]
+-      } else {
+-        if(useIndex) {
+-          o[x[0]] = i
+-        } else {
+-          o[x[0]] = uniforms[i].type
+-        }
+-      }
+-    }
+-  }
+-  return obj
++var createPick = require('gl-select-static')
++
++var createGrid = require('./lib/grid')
++var createText = require('./lib/text')
++var createLine = require('./lib/line')
++var createBox  = require('./lib/box')
++
++function GLPlot2D(gl, pickBuffer) {
++  this.gl               = gl
++  this.pickBuffer       = pickBuffer
++
++  this.screenBox        = [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight]
++  this.viewBox          = [0, 0, 0, 0]
++  this.dataBox          = [-10, -10, 10, 10]
++
++  this.gridLineEnable   = [true,true]
++  this.gridLineWidth    = [1,1]
++  this.gridLineColor    = [[0,0,0,1],
++                           [0,0,0,1]]
++
++  this.pixelRatio       = 1
++
++  this.tickMarkLength   = [0,0,0,0]
++  this.tickMarkWidth    = [0,0,0,0]
++  this.tickMarkColor    = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
++
++  this.tickPad          = [15,15,15,15]
++  this.tickAngle        = [0,0,0,0]
++  this.tickEnable       = [true,true,true,true]
++  this.tickColor        = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
++
++  this.labelPad         = [15,15,15,15]
++  this.labelAngle       = [0,Math.PI/2,0,3.0*Math.PI/2]
++  this.labelEnable      = [true,true,true,true]
++  this.labelColor       = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
++
++  this.titleCenter      = [0,0]
++  this.titleEnable      = true
++  this.titleAngle       = 0
++  this.titleColor       = [0,0,0,1]
++
++  this.borderColor      = [0,0,0,0]
++  this.backgroundColor  = [0,0,0,0]
++
++  this.zeroLineEnable   = [true, true]
++  this.zeroLineWidth    = [4, 4]
++  this.zeroLineColor    = [[0, 0, 0, 1],[0, 0, 0, 1]]
++
++  this.borderLineEnable = [true,true,true,true]
++  this.borderLineWidth  = [2,2,2,2]
++  this.borderLineColor  = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
++
++  //Drawing parameters
++  this.grid             = null
++  this.text             = null
++  this.line             = null
++  this.box              = null
++  this.objects          = []
++  this.overlays         = []
++
++  this._tickBounds      = [Infinity, Infinity, -Infinity, -Infinity]
++
++  this.dirty        = false
++  this.pickDirty    = false
++  this.pickDelay    = 120
++  this.pickRadius   = 10
++  this._pickTimeout = null
++  this._drawPick    = this.drawPick.bind(this)
++
++  this._depthCounter = 0
+ }
+-},{}],208:[function(require,module,exports){
+-'use strict'
+ 
+-exports.uniforms    = runtimeUniforms
+-exports.attributes  = runtimeAttributes
++var proto = GLPlot2D.prototype
+ 
+-var GL_TO_GLSL_TYPES = {
+-  'FLOAT':       'float',
+-  'FLOAT_VEC2':  'vec2',
+-  'FLOAT_VEC3':  'vec3',
+-  'FLOAT_VEC4':  'vec4',
+-  'INT':         'int',
+-  'INT_VEC2':    'ivec2',
+-  'INT_VEC3':    'ivec3',
+-  'INT_VEC4':    'ivec4',
+-  'BOOL':        'bool',
+-  'BOOL_VEC2':   'bvec2',
+-  'BOOL_VEC3':   'bvec3',
+-  'BOOL_VEC4':   'bvec4',
+-  'FLOAT_MAT2':  'mat2',
+-  'FLOAT_MAT3':  'mat3',
+-  'FLOAT_MAT4':  'mat4',
+-  'SAMPLER_2D':  'sampler2D',
+-  'SAMPLER_CUBE':'samplerCube'
++proto.setDirty = function() {
++  this.dirty = this.pickDirty = true
+ }
+ 
+-var GL_TABLE = null
++proto.setOverlayDirty = function() {
++  this.dirty = true
++}
+ 
+-function getType(gl, type) {
+-  if(!GL_TABLE) {
+-    var typeNames = Object.keys(GL_TO_GLSL_TYPES)
+-    GL_TABLE = {}
+-    for(var i=0; i<typeNames.length; ++i) {
+-      var tn = typeNames[i]
+-      GL_TABLE[gl[tn]] = GL_TO_GLSL_TYPES[tn]
+-    }
+-  }
+-  return GL_TABLE[type]
++proto.nextDepthValue = function() {
++  return (this._depthCounter++) / 65536.0
+ }
+ 
+-function runtimeUniforms(gl, program) {
+-  var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS)
+-  var result = []
+-  for(var i=0; i<numUniforms; ++i) {
+-    var info = gl.getActiveUniform(program, i)
+-    if(info) {
+-      var type = getType(gl, info.type)
+-      if(info.size > 1) {
+-        for(var j=0; j<info.size; ++j) {
+-          result.push({
+-            name: info.name.replace('[0]', '[' + j + ']'),
+-            type: type
+-          })
+-        }
+-      } else {
+-        result.push({
+-          name: info.name,
+-          type: type
+-        })
+-      }
+-    }
+-  }
+-  return result
++function lerp(a, b, t) {
++  var s = 0.5 * (t + 1.0)
++  return Math.floor((1.0-s)*a + s*b)|0
+ }
+ 
+-function runtimeAttributes(gl, program) {
+-  var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES)
+-  var result = []
+-  for(var i=0; i<numAttributes; ++i) {
+-    var info = gl.getActiveAttrib(program, i)
+-    if(info) {
+-      result.push({
+-        name: info.name,
+-        type: getType(gl, info.type)
+-      })
++proto.draw = (function() {
++var TICK_MARK_BOX = [0,0,0,0]
++return function() {
++  var gl         = this.gl
++  var screenBox  = this.screenBox
++  var viewPixels = this.viewBox
++  var dataBox    = this.dataBox
++  var pixelRatio = this.pixelRatio
++  var grid       = this.grid
++  var line       = this.line
++  var text       = this.text
++  var objects    = this.objects
++
++  this._depthCounter = 0
++
++  if(this.pickDirty) {
++    if(this._pickTimeout) {
++      clearTimeout(this._pickTimeout)
+     }
++    this.pickDirty = false
++    this._pickTimeout = setTimeout(this._drawPick, this.pickDelay)
+   }
+-  return result
+-}
+ 
+-},{}],209:[function(require,module,exports){
+-'use strict'
++  if(!this.dirty) {
++    return
++  }
++  this.dirty = false
+ 
+-exports.shader   = getShaderReference
+-exports.program  = createProgram
++  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+ 
+-var GLError = require("./GLError")
+-var formatCompilerError = require('gl-format-compiler-error');
++  //Turn on scissor
++  gl.enable(gl.SCISSOR_TEST)
+ 
+-var weakMap = typeof WeakMap === 'undefined' ? require('weakmap-shim') : WeakMap
+-var CACHE = new weakMap()
++  //Turn off depth buffer
++  gl.disable(gl.DEPTH_TEST)
++  gl.depthFunc(gl.LESS)
++  gl.depthMask(false)
+ 
+-var SHADER_COUNTER = 0
++  //Configure premultiplied alpha blending
++  gl.enable(gl.BLEND)
++  gl.blendEquation(gl.FUNC_ADD, gl.FUNC_ADD);
++  gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+ 
+-function ShaderReference(id, src, type, shader, programs, count, cache) {
+-  this.id       = id
+-  this.src      = src
+-  this.type     = type
+-  this.shader   = shader
+-  this.count    = count
+-  this.programs = []
+-  this.cache    = cache
+-}
++  //Draw border
++  gl.scissor(
++    screenBox[0],
++    screenBox[1],
++    screenBox[2]-screenBox[0],
++    screenBox[3]-screenBox[1])
++  var borderColor = this.borderColor
++  gl.clearColor(
++    borderColor[0]*borderColor[3],
++    borderColor[1]*borderColor[3],
++    borderColor[2]*borderColor[3],
++    borderColor[3])
++  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+ 
+-ShaderReference.prototype.dispose = function() {
+-  if(--this.count === 0) {
+-    var cache    = this.cache
+-    var gl       = cache.gl
++  //Draw center pane
++  gl.scissor(
++    viewPixels[0],
++    viewPixels[1],
++    viewPixels[2]-viewPixels[0],
++    viewPixels[3]-viewPixels[1])
++  gl.viewport(
++    viewPixels[0],
++    viewPixels[1],
++    viewPixels[2]-viewPixels[0],
++    viewPixels[3]-viewPixels[1])
++  var backgroundColor = this.backgroundColor
++  gl.clearColor(
++    backgroundColor[0]*backgroundColor[3],
++    backgroundColor[1]*backgroundColor[3],
++    backgroundColor[2]*backgroundColor[3],
++    backgroundColor[3])
++  gl.clear(gl.COLOR_BUFFER_BIT)
+ 
+-    //Remove program references
+-    var programs = this.programs
+-    for(var i=0, n=programs.length; i<n; ++i) {
+-      var p = cache.programs[programs[i]]
+-      if(p) {
+-        delete cache.programs[i]
+-        gl.deleteProgram(p)
++  //Draw grid
++  grid.draw()
++
++  //Draw zero lines separately
++  var zeroLineEnable = this.zeroLineEnable
++  var zeroLineColor  = this.zeroLineColor
++  var zeroLineWidth  = this.zeroLineWidth
++  if(zeroLineEnable[0] || zeroLineEnable[1]) {
++    line.bind()
++    for(var i=0; i<2; ++i) {
++      if(!zeroLineEnable[i] ||
++        !(dataBox[i] <= 0 && dataBox[i+2] >= 0)) {
++        continue
++      }
++
++      var zeroIntercept = screenBox[i] -
++        dataBox[i] * (screenBox[i+2] - screenBox[i]) / (dataBox[i+2] - dataBox[i])
++
++      if(i === 0) {
++        line.drawLine(
++          zeroIntercept, screenBox[1], zeroIntercept, screenBox[3],
++          zeroLineWidth[i],
++          zeroLineColor[i])
++      } else {
++        line.drawLine(
++          screenBox[0], zeroIntercept, screenBox[2], zeroIntercept,
++          zeroLineWidth[i],
++          zeroLineColor[i])
+       }
+     }
++  }
+ 
+-    //Remove shader reference
+-    gl.deleteShader(this.shader)
+-    delete cache.shaders[(this.type === gl.FRAGMENT_SHADER)|0][this.src]
++  //Draw traces
++  for(var i=0; i<objects.length; ++i) {
++    objects[i].draw()
+   }
+-}
+ 
+-function ContextCache(gl) {
+-  this.gl       = gl
+-  this.shaders  = [{}, {}]
+-  this.programs = {}
+-}
++  //Return viewport to default
++  gl.viewport(
++    screenBox[0],
++    screenBox[1],
++    screenBox[2]-screenBox[0],
++    screenBox[3]-screenBox[1])
++  gl.scissor(
++    screenBox[0],
++    screenBox[1],
++    screenBox[2]-screenBox[0],
++    screenBox[3]-screenBox[1])
+ 
+-var proto = ContextCache.prototype
++  //Draw tick marks
++  this.grid.drawTickMarks()
+ 
+-function compileShader(gl, type, src) {
+-  var shader = gl.createShader(type)
+-  gl.shaderSource(shader, src)
+-  gl.compileShader(shader)
+-  if(!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
+-    var errLog = gl.getShaderInfoLog(shader)
+-    try {
+-        var fmt = formatCompilerError(errLog, src, type);
+-    } catch (e){
+-        console.warn('Failed to format compiler error: ' + e);
+-        throw new GLError(errLog, 'Error compiling shader:\n' + errLog)
+-    }
+-    throw new GLError(errLog, fmt.short, fmt.long)
++  //Draw line elements
++  line.bind()
++
++  //Draw border lines
++  var borderLineEnable = this.borderLineEnable
++  var borderLineWidth  = this.borderLineWidth
++  var borderLineColor  = this.borderLineColor
++  if(borderLineEnable[1]) {
++    line.drawLine(
++      viewPixels[0], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
++      viewPixels[0], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
++      borderLineWidth[1], borderLineColor[1])
++  }
++  if(borderLineEnable[0]) {
++    line.drawLine(
++      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[1],
++      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[1],
++      borderLineWidth[0], borderLineColor[0])
++  }
++  if(borderLineEnable[3]) {
++    line.drawLine(
++      viewPixels[2], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
++      viewPixels[2], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
++      borderLineWidth[3], borderLineColor[3])
++  }
++  if(borderLineEnable[2]) {
++    line.drawLine(
++      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[3],
++      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[3],
++      borderLineWidth[2], borderLineColor[2])
+   }
+-  return shader
+-}
+ 
+-proto.getShaderReference = function(type, src) {
+-  var gl      = this.gl
+-  var shaders = this.shaders[(type === gl.FRAGMENT_SHADER)|0]
+-  var shader  = shaders[src]
+-  if(!shader || !gl.isShader(shader.shader)) {
+-    var shaderObj = compileShader(gl, type, src)
+-    shader = shaders[src] = new ShaderReference(
+-      SHADER_COUNTER++,
+-      src,
+-      type,
+-      shaderObj,
+-      [],
+-      1,
+-      this)
+-  } else {
+-    shader.count += 1
++  //Draw text elements
++  text.bind()
++  for(var i=0; i<2; ++i) {
++    text.drawTicks(i)
+   }
+-  return shader
++  if(this.titleEnable) {
++    text.drawTitle()
++  }
++
++  //Draw other overlay elements (select boxes, etc.)
++  var overlays = this.overlays
++  for(var i=0; i<overlays.length; ++i) {
++    overlays[i].draw()
++  }
++
++  //Turn off scissor test
++  gl.disable(gl.SCISSOR_TEST)
++  gl.disable(gl.BLEND)
++  gl.depthMask(true)
+ }
++})()
+ 
+-function linkProgram(gl, vshader, fshader, attribs, locations) {
+-  var program = gl.createProgram()
+-  gl.attachShader(program, vshader)
+-  gl.attachShader(program, fshader)
+-  for(var i=0; i<attribs.length; ++i) {
+-    gl.bindAttribLocation(program, locations[i], attribs[i])
+-  }
+-  gl.linkProgram(program)
+-  if(!gl.getProgramParameter(program, gl.LINK_STATUS)) {
+-    var errLog = gl.getProgramInfoLog(program)
+-    throw new GLError(errLog, 'Error linking program: ' + errLog)
++proto.drawPick = (function() {
++
++return function() {
++  var pickBuffer = this.pickBuffer
++  var gl = this.gl
++
++  this._pickTimeout = null
++  pickBuffer.begin()
++
++  var pickOffset = 1
++  var objects = this.objects
++  for(var i=0; i<objects.length; ++i) {
++    pickOffset = objects[i].drawPick(pickOffset)
+   }
+-  return program
++
++  pickBuffer.end()
+ }
++})()
+ 
+-proto.getProgram = function(vref, fref, attribs, locations) {
+-  var token = [vref.id, fref.id, attribs.join(':'), locations.join(':')].join('@')
+-  var prog  = this.programs[token]
+-  if(!prog || !this.gl.isProgram(prog)) {
+-    this.programs[token] = prog = linkProgram(
+-      this.gl,
+-      vref.shader,
+-      fref.shader,
+-      attribs,
+-      locations)
+-    vref.programs.push(token)
+-    fref.programs.push(token)
++proto.pick = (function() {
++return function(x, y) {
++  var pixelRatio     = this.pixelRatio
++  var pickPixelRatio = this.pickPixelRatio
++  var viewBox        = this.viewBox
++
++  var scrX = Math.round((x - viewBox[0] / pixelRatio) * pickPixelRatio)|0
++  var scrY = Math.round((y - viewBox[1] / pixelRatio) * pickPixelRatio)|0
++
++  var pickResult = this.pickBuffer.query(scrX, scrY, this.pickRadius)
++  if(!pickResult) {
++    return null
+   }
+-  return prog
+-}
+ 
+-function getCache(gl) {
+-  var ctxCache = CACHE.get(gl)
+-  if(!ctxCache) {
+-    ctxCache = new ContextCache(gl)
+-    CACHE.set(gl, ctxCache)
++  var pickValue = pickResult.id +
++    (pickResult.value[0]<<8)  +
++    (pickResult.value[1]<<16) +
++    (pickResult.value[2]<<24)
++
++  var objects = this.objects
++  for(var i=0; i<objects.length; ++i) {
++    var result = objects[i].pick(scrX, scrY, pickValue)
++    if(result) {
++      return result
++    }
+   }
+-  return ctxCache
+-}
+ 
+-function getShaderReference(gl, type, src) {
+-  return getCache(gl).getShaderReference(type, src)
++  return null
+ }
++})()
+ 
+-function createProgram(gl, vref, fref, attribs, locations) {
+-  return getCache(gl).getProgram(vref, fref, attribs, locations)
++function deepClone(array) {
++  var result = array.slice()
++  for(var i=0; i<result.length; ++i) {
++    result[i] = result[i].slice()
++  }
++  return result
+ }
+ 
+-},{"./GLError":204,"gl-format-compiler-error":210,"weakmap-shim":220}],210:[function(require,module,exports){
++function compareTicks(a, b) {
++  return a.x - b.x
++}
+ 
+-var sprintf = require('sprintf-js').sprintf;
+-var glConstants = require('gl-constants/lookup');
+-var shaderName = require('glsl-shader-name');
+-var addLineNumbers = require('add-line-numbers');
++proto.setScreenBox = function(nbox) {
++  var screenBox = this.screenBox
++  var pixelRatio = this.pixelRatio
+ 
+-module.exports = formatCompilerError;
++  screenBox[0] = Math.round(nbox[0] * pixelRatio) | 0
++  screenBox[1] = Math.round(nbox[1] * pixelRatio) | 0
++  screenBox[2] = Math.round(nbox[2] * pixelRatio) | 0
++  screenBox[3] = Math.round(nbox[3] * pixelRatio) | 0
+ 
+-function formatCompilerError(errLog, src, type) {
+-    "use strict";
++  this.setDirty()
++}
+ 
+-    var name = shaderName(src) || 'of unknown name (see npm glsl-shader-name)';
++proto.setDataBox = function(nbox) {
++  var dataBox = this.dataBox
+ 
+-    var typeName = 'unknown type';
+-    if (type !== undefined) {
+-        typeName = type === glConstants.FRAGMENT_SHADER ? 'fragment' : 'vertex'
+-    }
++  var different =
++    dataBox[0] !== nbox[0] ||
++    dataBox[1] !== nbox[1] ||
++    dataBox[2] !== nbox[2] ||
++    dataBox[3] !== nbox[3]
+ 
+-    var longForm = sprintf('Error compiling %s shader %s:\n', typeName, name);
+-    var shortForm = sprintf("%s%s", longForm, errLog);
++  if(different) {
++    dataBox[0] = nbox[0]
++    dataBox[1] = nbox[1]
++    dataBox[2] = nbox[2]
++    dataBox[3] = nbox[3]
+ 
+-    var errorStrings = errLog.split('\n');
+-    var errors = {};
++    this.setDirty()
++  }
++}
+ 
+-    for (var i = 0; i < errorStrings.length; i++) {
+-        var errorString = errorStrings[i];
+-        if (errorString === '') continue;
+-        var lineNo = parseInt(errorString.split(':')[2]);
+-        if (isNaN(lineNo)) {
+-            throw new Error(sprintf('Could not parse error: %s', errorString));
+-        }
+-        errors[lineNo] = errorString;
+-    }
++proto.setViewBox = function(nbox) {
++  var pixelRatio = this.pixelRatio
++  var viewBox = this.viewBox
+ 
+-    var lines = addLineNumbers(src).split('\n');
++  viewBox[0] = Math.round(nbox[0] * pixelRatio)|0
++  viewBox[1] = Math.round(nbox[1] * pixelRatio)|0
++  viewBox[2] = Math.round(nbox[2] * pixelRatio)|0
++  viewBox[3] = Math.round(nbox[3] * pixelRatio)|0
+ 
+-    for (var i = 0; i < lines.length; i++) {
+-        if (!errors[i+3] && !errors[i+2] && !errors[i+1]) continue;
+-        var line = lines[i];
+-        longForm += line + '\n';
+-        if (errors[i+1]) {
+-            var e = errors[i+1];
+-            e = e.substr(e.split(':', 3).join(':').length + 1).trim();
+-            longForm += sprintf('^^^ %s\n\n', e);
+-        }
+-    }
++  var pickPixelRatio = this.pickPixelRatio
++  this.pickBuffer.shape = [
++    Math.round((nbox[2] - nbox[0]) * pickPixelRatio)|0,
++    Math.round((nbox[3] - nbox[1]) * pickPixelRatio)|0 ]
+ 
+-    return {
+-        long: longForm.trim(),
+-        short: shortForm.trim()
+-    };
++  this.setDirty()
+ }
+ 
++proto.update = function(options) {
++  options = options || {}
+ 
+-},{"add-line-numbers":211,"gl-constants/lookup":214,"glsl-shader-name":215,"sprintf-js":217}],211:[function(require,module,exports){
+-var padLeft = require('pad-left')
++  var gl = this.gl
+ 
+-module.exports = addLineNumbers
+-function addLineNumbers (string, start, delim) {
+-  start = typeof start === 'number' ? start : 1
+-  delim = delim || ': '
++  this.pixelRatio      = options.pixelRatio || 1
+ 
+-  var lines = string.split(/\r?\n/)
+-  var totalDigits = String(lines.length + start - 1).length
+-  return lines.map(function (line, i) {
+-    var c = i + start
+-    var digits = String(c).length
+-    var prefix = padLeft(c, totalDigits - digits)
+-    return prefix + delim + line
+-  }).join('\n')
+-}
++  var pixelRatio       = this.pixelRatio
++  this.pickPixelRatio  = Math.max(pixelRatio, 1)
+ 
+-},{"pad-left":212}],212:[function(require,module,exports){
+-/*!
+- * pad-left <https://github.com/jonschlinkert/pad-left>
+- *
+- * Copyright (c) 2014-2015, Jon Schlinkert.
+- * Licensed under the MIT license.
+- */
++  this.setScreenBox(options.screenBox ||
++    [0, 0, gl.drawingBufferWidth/pixelRatio, gl.drawingBufferHeight/pixelRatio])
+ 
+-'use strict';
++  var screenBox = this.screenBox
++  this.setViewBox(options.viewBox ||
++    [0.125*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
++     0.125*(this.screenBox[3]-this.screenBox[1])/pixelRatio,
++     0.875*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
++     0.875*(this.screenBox[3]-this.screenBox[1])/pixelRatio])
+ 
+-var repeat = require('repeat-string');
++  var viewBox = this.viewBox
++  var aspectRatio = (viewBox[2] - viewBox[0]) / (viewBox[3] - viewBox[1])
++  this.setDataBox(options.dataBox || [-10, -10/aspectRatio, 10, 10/aspectRatio])
+ 
+-module.exports = function padLeft(str, num, ch) {
+-  ch = typeof ch !== 'undefined' ? (ch + '') : ' ';
+-  return repeat(ch, num) + str;
+-};
+-},{"repeat-string":434}],213:[function(require,module,exports){
+-module.exports = {
+-  0: 'NONE',
+-  1: 'ONE',
+-  2: 'LINE_LOOP',
+-  3: 'LINE_STRIP',
+-  4: 'TRIANGLES',
+-  5: 'TRIANGLE_STRIP',
+-  6: 'TRIANGLE_FAN',
+-  256: 'DEPTH_BUFFER_BIT',
+-  512: 'NEVER',
+-  513: 'LESS',
+-  514: 'EQUAL',
+-  515: 'LEQUAL',
+-  516: 'GREATER',
+-  517: 'NOTEQUAL',
+-  518: 'GEQUAL',
+-  519: 'ALWAYS',
+-  768: 'SRC_COLOR',
+-  769: 'ONE_MINUS_SRC_COLOR',
+-  770: 'SRC_ALPHA',
+-  771: 'ONE_MINUS_SRC_ALPHA',
+-  772: 'DST_ALPHA',
+-  773: 'ONE_MINUS_DST_ALPHA',
+-  774: 'DST_COLOR',
+-  775: 'ONE_MINUS_DST_COLOR',
+-  776: 'SRC_ALPHA_SATURATE',
+-  1024: 'STENCIL_BUFFER_BIT',
+-  1028: 'FRONT',
+-  1029: 'BACK',
+-  1032: 'FRONT_AND_BACK',
+-  1280: 'INVALID_ENUM',
+-  1281: 'INVALID_VALUE',
+-  1282: 'INVALID_OPERATION',
+-  1285: 'OUT_OF_MEMORY',
+-  1286: 'INVALID_FRAMEBUFFER_OPERATION',
+-  2304: 'CW',
+-  2305: 'CCW',
+-  2849: 'LINE_WIDTH',
+-  2884: 'CULL_FACE',
+-  2885: 'CULL_FACE_MODE',
+-  2886: 'FRONT_FACE',
+-  2928: 'DEPTH_RANGE',
+-  2929: 'DEPTH_TEST',
+-  2930: 'DEPTH_WRITEMASK',
+-  2931: 'DEPTH_CLEAR_VALUE',
+-  2932: 'DEPTH_FUNC',
+-  2960: 'STENCIL_TEST',
+-  2961: 'STENCIL_CLEAR_VALUE',
+-  2962: 'STENCIL_FUNC',
+-  2963: 'STENCIL_VALUE_MASK',
+-  2964: 'STENCIL_FAIL',
+-  2965: 'STENCIL_PASS_DEPTH_FAIL',
+-  2966: 'STENCIL_PASS_DEPTH_PASS',
+-  2967: 'STENCIL_REF',
+-  2968: 'STENCIL_WRITEMASK',
+-  2978: 'VIEWPORT',
+-  3024: 'DITHER',
+-  3042: 'BLEND',
+-  3088: 'SCISSOR_BOX',
+-  3089: 'SCISSOR_TEST',
+-  3106: 'COLOR_CLEAR_VALUE',
+-  3107: 'COLOR_WRITEMASK',
+-  3317: 'UNPACK_ALIGNMENT',
+-  3333: 'PACK_ALIGNMENT',
+-  3379: 'MAX_TEXTURE_SIZE',
+-  3386: 'MAX_VIEWPORT_DIMS',
+-  3408: 'SUBPIXEL_BITS',
+-  3410: 'RED_BITS',
+-  3411: 'GREEN_BITS',
+-  3412: 'BLUE_BITS',
+-  3413: 'ALPHA_BITS',
+-  3414: 'DEPTH_BITS',
+-  3415: 'STENCIL_BITS',
+-  3553: 'TEXTURE_2D',
+-  4352: 'DONT_CARE',
+-  4353: 'FASTEST',
+-  4354: 'NICEST',
+-  5120: 'BYTE',
+-  5121: 'UNSIGNED_BYTE',
+-  5122: 'SHORT',
+-  5123: 'UNSIGNED_SHORT',
+-  5124: 'INT',
+-  5125: 'UNSIGNED_INT',
+-  5126: 'FLOAT',
+-  5386: 'INVERT',
+-  5890: 'TEXTURE',
+-  6401: 'STENCIL_INDEX',
+-  6402: 'DEPTH_COMPONENT',
+-  6406: 'ALPHA',
+-  6407: 'RGB',
+-  6408: 'RGBA',
+-  6409: 'LUMINANCE',
+-  6410: 'LUMINANCE_ALPHA',
+-  7680: 'KEEP',
+-  7681: 'REPLACE',
+-  7682: 'INCR',
+-  7683: 'DECR',
+-  7936: 'VENDOR',
+-  7937: 'RENDERER',
+-  7938: 'VERSION',
+-  9728: 'NEAREST',
+-  9729: 'LINEAR',
+-  9984: 'NEAREST_MIPMAP_NEAREST',
+-  9985: 'LINEAR_MIPMAP_NEAREST',
+-  9986: 'NEAREST_MIPMAP_LINEAR',
+-  9987: 'LINEAR_MIPMAP_LINEAR',
+-  10240: 'TEXTURE_MAG_FILTER',
+-  10241: 'TEXTURE_MIN_FILTER',
+-  10242: 'TEXTURE_WRAP_S',
+-  10243: 'TEXTURE_WRAP_T',
+-  10497: 'REPEAT',
+-  10752: 'POLYGON_OFFSET_UNITS',
+-  16384: 'COLOR_BUFFER_BIT',
+-  32769: 'CONSTANT_COLOR',
+-  32770: 'ONE_MINUS_CONSTANT_COLOR',
+-  32771: 'CONSTANT_ALPHA',
+-  32772: 'ONE_MINUS_CONSTANT_ALPHA',
+-  32773: 'BLEND_COLOR',
+-  32774: 'FUNC_ADD',
+-  32777: 'BLEND_EQUATION_RGB',
+-  32778: 'FUNC_SUBTRACT',
+-  32779: 'FUNC_REVERSE_SUBTRACT',
+-  32819: 'UNSIGNED_SHORT_4_4_4_4',
+-  32820: 'UNSIGNED_SHORT_5_5_5_1',
+-  32823: 'POLYGON_OFFSET_FILL',
+-  32824: 'POLYGON_OFFSET_FACTOR',
+-  32854: 'RGBA4',
+-  32855: 'RGB5_A1',
+-  32873: 'TEXTURE_BINDING_2D',
+-  32926: 'SAMPLE_ALPHA_TO_COVERAGE',
+-  32928: 'SAMPLE_COVERAGE',
+-  32936: 'SAMPLE_BUFFERS',
+-  32937: 'SAMPLES',
+-  32938: 'SAMPLE_COVERAGE_VALUE',
+-  32939: 'SAMPLE_COVERAGE_INVERT',
+-  32968: 'BLEND_DST_RGB',
+-  32969: 'BLEND_SRC_RGB',
+-  32970: 'BLEND_DST_ALPHA',
+-  32971: 'BLEND_SRC_ALPHA',
+-  33071: 'CLAMP_TO_EDGE',
+-  33170: 'GENERATE_MIPMAP_HINT',
+-  33189: 'DEPTH_COMPONENT16',
+-  33306: 'DEPTH_STENCIL_ATTACHMENT',
+-  33635: 'UNSIGNED_SHORT_5_6_5',
+-  33648: 'MIRRORED_REPEAT',
+-  33901: 'ALIASED_POINT_SIZE_RANGE',
+-  33902: 'ALIASED_LINE_WIDTH_RANGE',
+-  33984: 'TEXTURE0',
+-  33985: 'TEXTURE1',
+-  33986: 'TEXTURE2',
+-  33987: 'TEXTURE3',
+-  33988: 'TEXTURE4',
+-  33989: 'TEXTURE5',
+-  33990: 'TEXTURE6',
+-  33991: 'TEXTURE7',
+-  33992: 'TEXTURE8',
+-  33993: 'TEXTURE9',
+-  33994: 'TEXTURE10',
+-  33995: 'TEXTURE11',
+-  33996: 'TEXTURE12',
+-  33997: 'TEXTURE13',
+-  33998: 'TEXTURE14',
+-  33999: 'TEXTURE15',
+-  34000: 'TEXTURE16',
+-  34001: 'TEXTURE17',
+-  34002: 'TEXTURE18',
+-  34003: 'TEXTURE19',
+-  34004: 'TEXTURE20',
+-  34005: 'TEXTURE21',
+-  34006: 'TEXTURE22',
+-  34007: 'TEXTURE23',
+-  34008: 'TEXTURE24',
+-  34009: 'TEXTURE25',
+-  34010: 'TEXTURE26',
+-  34011: 'TEXTURE27',
+-  34012: 'TEXTURE28',
+-  34013: 'TEXTURE29',
+-  34014: 'TEXTURE30',
+-  34015: 'TEXTURE31',
+-  34016: 'ACTIVE_TEXTURE',
+-  34024: 'MAX_RENDERBUFFER_SIZE',
+-  34041: 'DEPTH_STENCIL',
+-  34055: 'INCR_WRAP',
+-  34056: 'DECR_WRAP',
+-  34067: 'TEXTURE_CUBE_MAP',
+-  34068: 'TEXTURE_BINDING_CUBE_MAP',
+-  34069: 'TEXTURE_CUBE_MAP_POSITIVE_X',
+-  34070: 'TEXTURE_CUBE_MAP_NEGATIVE_X',
+-  34071: 'TEXTURE_CUBE_MAP_POSITIVE_Y',
+-  34072: 'TEXTURE_CUBE_MAP_NEGATIVE_Y',
+-  34073: 'TEXTURE_CUBE_MAP_POSITIVE_Z',
+-  34074: 'TEXTURE_CUBE_MAP_NEGATIVE_Z',
+-  34076: 'MAX_CUBE_MAP_TEXTURE_SIZE',
+-  34338: 'VERTEX_ATTRIB_ARRAY_ENABLED',
+-  34339: 'VERTEX_ATTRIB_ARRAY_SIZE',
+-  34340: 'VERTEX_ATTRIB_ARRAY_STRIDE',
+-  34341: 'VERTEX_ATTRIB_ARRAY_TYPE',
+-  34342: 'CURRENT_VERTEX_ATTRIB',
+-  34373: 'VERTEX_ATTRIB_ARRAY_POINTER',
+-  34466: 'NUM_COMPRESSED_TEXTURE_FORMATS',
+-  34467: 'COMPRESSED_TEXTURE_FORMATS',
+-  34660: 'BUFFER_SIZE',
+-  34661: 'BUFFER_USAGE',
+-  34816: 'STENCIL_BACK_FUNC',
+-  34817: 'STENCIL_BACK_FAIL',
+-  34818: 'STENCIL_BACK_PASS_DEPTH_FAIL',
+-  34819: 'STENCIL_BACK_PASS_DEPTH_PASS',
+-  34877: 'BLEND_EQUATION_ALPHA',
+-  34921: 'MAX_VERTEX_ATTRIBS',
+-  34922: 'VERTEX_ATTRIB_ARRAY_NORMALIZED',
+-  34930: 'MAX_TEXTURE_IMAGE_UNITS',
+-  34962: 'ARRAY_BUFFER',
+-  34963: 'ELEMENT_ARRAY_BUFFER',
+-  34964: 'ARRAY_BUFFER_BINDING',
+-  34965: 'ELEMENT_ARRAY_BUFFER_BINDING',
+-  34975: 'VERTEX_ATTRIB_ARRAY_BUFFER_BINDING',
+-  35040: 'STREAM_DRAW',
+-  35044: 'STATIC_DRAW',
+-  35048: 'DYNAMIC_DRAW',
+-  35632: 'FRAGMENT_SHADER',
+-  35633: 'VERTEX_SHADER',
+-  35660: 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
+-  35661: 'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
+-  35663: 'SHADER_TYPE',
+-  35664: 'FLOAT_VEC2',
+-  35665: 'FLOAT_VEC3',
+-  35666: 'FLOAT_VEC4',
+-  35667: 'INT_VEC2',
+-  35668: 'INT_VEC3',
+-  35669: 'INT_VEC4',
+-  35670: 'BOOL',
+-  35671: 'BOOL_VEC2',
+-  35672: 'BOOL_VEC3',
+-  35673: 'BOOL_VEC4',
+-  35674: 'FLOAT_MAT2',
+-  35675: 'FLOAT_MAT3',
+-  35676: 'FLOAT_MAT4',
+-  35678: 'SAMPLER_2D',
+-  35680: 'SAMPLER_CUBE',
+-  35712: 'DELETE_STATUS',
+-  35713: 'COMPILE_STATUS',
+-  35714: 'LINK_STATUS',
+-  35715: 'VALIDATE_STATUS',
+-  35716: 'INFO_LOG_LENGTH',
+-  35717: 'ATTACHED_SHADERS',
+-  35718: 'ACTIVE_UNIFORMS',
+-  35719: 'ACTIVE_UNIFORM_MAX_LENGTH',
+-  35720: 'SHADER_SOURCE_LENGTH',
+-  35721: 'ACTIVE_ATTRIBUTES',
+-  35722: 'ACTIVE_ATTRIBUTE_MAX_LENGTH',
+-  35724: 'SHADING_LANGUAGE_VERSION',
+-  35725: 'CURRENT_PROGRAM',
+-  36003: 'STENCIL_BACK_REF',
+-  36004: 'STENCIL_BACK_VALUE_MASK',
+-  36005: 'STENCIL_BACK_WRITEMASK',
+-  36006: 'FRAMEBUFFER_BINDING',
+-  36007: 'RENDERBUFFER_BINDING',
+-  36048: 'FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE',
+-  36049: 'FRAMEBUFFER_ATTACHMENT_OBJECT_NAME',
+-  36050: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL',
+-  36051: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
+-  36053: 'FRAMEBUFFER_COMPLETE',
+-  36054: 'FRAMEBUFFER_INCOMPLETE_ATTACHMENT',
+-  36055: 'FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT',
+-  36057: 'FRAMEBUFFER_INCOMPLETE_DIMENSIONS',
+-  36061: 'FRAMEBUFFER_UNSUPPORTED',
+-  36064: 'COLOR_ATTACHMENT0',
+-  36096: 'DEPTH_ATTACHMENT',
+-  36128: 'STENCIL_ATTACHMENT',
+-  36160: 'FRAMEBUFFER',
+-  36161: 'RENDERBUFFER',
+-  36162: 'RENDERBUFFER_WIDTH',
+-  36163: 'RENDERBUFFER_HEIGHT',
+-  36164: 'RENDERBUFFER_INTERNAL_FORMAT',
+-  36168: 'STENCIL_INDEX8',
+-  36176: 'RENDERBUFFER_RED_SIZE',
+-  36177: 'RENDERBUFFER_GREEN_SIZE',
+-  36178: 'RENDERBUFFER_BLUE_SIZE',
+-  36179: 'RENDERBUFFER_ALPHA_SIZE',
+-  36180: 'RENDERBUFFER_DEPTH_SIZE',
+-  36181: 'RENDERBUFFER_STENCIL_SIZE',
+-  36194: 'RGB565',
+-  36336: 'LOW_FLOAT',
+-  36337: 'MEDIUM_FLOAT',
+-  36338: 'HIGH_FLOAT',
+-  36339: 'LOW_INT',
+-  36340: 'MEDIUM_INT',
+-  36341: 'HIGH_INT',
+-  36346: 'SHADER_COMPILER',
+-  36347: 'MAX_VERTEX_UNIFORM_VECTORS',
+-  36348: 'MAX_VARYING_VECTORS',
+-  36349: 'MAX_FRAGMENT_UNIFORM_VECTORS',
+-  37440: 'UNPACK_FLIP_Y_WEBGL',
+-  37441: 'UNPACK_PREMULTIPLY_ALPHA_WEBGL',
+-  37442: 'CONTEXT_LOST_WEBGL',
+-  37443: 'UNPACK_COLORSPACE_CONVERSION_WEBGL',
+-  37444: 'BROWSER_DEFAULT_WEBGL'
+-}
++  this.borderColor     = (options.borderColor     || [0,0,0,0]).slice()
++  this.backgroundColor = (options.backgroundColor || [0,0,0,0]).slice()
++
++  this.gridLineEnable  = (options.gridLineEnable || [true,true]).slice()
++  this.gridLineWidth   = (options.gridLineWidth || [1,1]).slice()
++  this.gridLineColor   = deepClone(options.gridLineColor ||
++    [[0.5,0.5,0.5,1],[0.5,0.5,0.5,1]])
+ 
+-},{}],214:[function(require,module,exports){
+-var gl10 = require('./1.0/numbers')
++  this.zeroLineEnable   = (options.zeroLineEnable || [true, true]).slice()
++  this.zeroLineWidth    = (options.zeroLineWidth || [4, 4]).slice()
++  this.zeroLineColor    = deepClone(options.zeroLineColor ||
++    [[0, 0, 0, 1],[0, 0, 0, 1]])
+ 
+-module.exports = function lookupConstant (number) {
+-  return gl10[number]
+-}
++  this.tickMarkLength   = (options.tickMarkLength || [0,0,0,0]).slice()
++  this.tickMarkWidth    = (options.tickMarkWidth || [0,0,0,0]).slice()
++  this.tickMarkColor    = deepClone(options.tickMarkColor ||
++    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
+ 
+-},{"./1.0/numbers":213}],215:[function(require,module,exports){
+-var tokenize = require('glsl-tokenizer')
+-var atob     = require('atob-lite')
++  this.titleCenter      = (options.titleCenter || [
++    0.5*(viewBox[0]+viewBox[2])/pixelRatio,(viewBox[3]+120)/pixelRatio]).slice()
++  this.titleEnable      = !('titleEnable' in options) || !!options.titleEnable
++  this.titleAngle       = options.titleAngle || 0
++  this.titleColor       = (options.titleColor || [0,0,0,1]).slice()
+ 
+-module.exports = getName
++  this.labelPad         = (options.labelPad || [15,15,15,15]).slice()
++  this.labelAngle       = (options.labelAngle ||
++    [0,Math.PI/2,0,3.0*Math.PI/2]).slice()
++  this.labelEnable      = (options.labelEnable || [true,true,true,true]).slice()
++  this.labelColor       = deepClone(options.labelColor ||
++    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
+ 
+-function getName(src) {
+-  var tokens = Array.isArray(src)
+-    ? src
+-    : tokenize(src)
++  this.tickPad         = (options.tickPad || [15,15,15,15]).slice()
++  this.tickAngle       = (options.tickAngle || [0,0,0,0]).slice()
++  this.tickEnable      = (options.tickEnable || [true,true,true,true]).slice()
++  this.tickColor       = deepClone(options.tickColor ||
++    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
+ 
+-  for (var i = 0; i < tokens.length; i++) {
+-    var token = tokens[i]
+-    if (token.type !== 'preprocessor') continue
+-    var match = token.data.match(/\#define\s+SHADER_NAME(_B64)?\s+(.+)$/)
+-    if (!match) continue
+-    if (!match[2]) continue
++  this.borderLineEnable = (options.borderLineEnable ||
++                            [true,true,true,true]).slice()
++  this.borderLineWidth  = (options.borderLineWidth || [2,2,2,2]).slice()
++  this.borderLineColor  = deepClone(options.borderLineColor ||
++                          [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]])
+ 
+-    var b64  = match[1]
+-    var name = match[2]
++  var ticks = options.ticks || [ [], [] ]
+ 
+-    return (b64 ? atob(name) : name).trim()
++  //Compute bounds on ticks
++  var bounds = this._tickBounds
++  bounds[0] = bounds[1] =  Infinity
++  bounds[2] = bounds[3] = -Infinity
++  for(var i=0; i<2; ++i) {
++    var axisTicks = ticks[i].slice(0)
++    if(axisTicks.length === 0) {
++      continue
++    }
++    axisTicks.sort(compareTicks)
++    bounds[i]   = Math.min(bounds[i], axisTicks[0].x)
++    bounds[i+2] = Math.max(bounds[i+2], axisTicks[axisTicks.length-1].x)
+   }
+-}
+-
+-},{"atob-lite":216,"glsl-tokenizer":240}],216:[function(require,module,exports){
+-module.exports = function _atob(str) {
+-  return atob(str)
+-}
+ 
+-},{}],217:[function(require,module,exports){
+-(function(window) {
+-    var re = {
+-        not_string: /[^s]/,
+-        number: /[diefg]/,
+-        json: /[j]/,
+-        not_json: /[^j]/,
+-        text: /^[^\x25]+/,
+-        modulo: /^\x25{2}/,
+-        placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijosuxX])/,
+-        key: /^([a-z_][a-z_\d]*)/i,
+-        key_access: /^\.([a-z_][a-z_\d]*)/i,
+-        index_access: /^\[(\d+)\]/,
+-        sign: /^[\+\-]/
+-    }
++  //Update grid
++  this.grid.update({
++    bounds: bounds,
++    ticks:  ticks
++  })
+ 
+-    function sprintf() {
+-        var key = arguments[0], cache = sprintf.cache
+-        if (!(cache[key] && cache.hasOwnProperty(key))) {
+-            cache[key] = sprintf.parse(key)
+-        }
+-        return sprintf.format.call(null, cache[key], arguments)
+-    }
++  //Update text
++  this.text.update({
++    bounds:     bounds,
++    ticks:      ticks,
++    labels:     options.labels    || ['x', 'y'],
++    labelSize:  options.labelSize || [12,12],
++    labelFont:  options.labelFont || ['sans-serif', 'sans-serif'],
++    title:      options.title     || '',
++    titleSize:  options.titleSize || 18,
++    titleFont:  options.titleFont || 'sans-serif'
++  })
+ 
+-    sprintf.format = function(parse_tree, argv) {
+-        var cursor = 1, tree_length = parse_tree.length, node_type = "", arg, output = [], i, k, match, pad, pad_character, pad_length, is_positive = true, sign = ""
+-        for (i = 0; i < tree_length; i++) {
+-            node_type = get_type(parse_tree[i])
+-            if (node_type === "string") {
+-                output[output.length] = parse_tree[i]
+-            }
+-            else if (node_type === "array") {
+-                match = parse_tree[i] // convenience purposes only
+-                if (match[2]) { // keyword argument
+-                    arg = argv[cursor]
+-                    for (k = 0; k < match[2].length; k++) {
+-                        if (!arg.hasOwnProperty(match[2][k])) {
+-                            throw new Error(sprintf("[sprintf] property '%s' does not exist", match[2][k]))
+-                        }
+-                        arg = arg[match[2][k]]
+-                    }
+-                }
+-                else if (match[1]) { // positional argument (explicit)
+-                    arg = argv[match[1]]
+-                }
+-                else { // positional argument (implicit)
+-                    arg = argv[cursor++]
+-                }
++  this.setDirty()
++}
+ 
+-                if (get_type(arg) == "function") {
+-                    arg = arg()
+-                }
++proto.dispose = function() {
++  this.box.dispose()
++  this.grid.dispose()
++  this.text.dispose()
++  this.line.dispose()
++  for(var i=this.objects.length-1; i>=0; --i) {
++    this.objects[i].dispose()
++  }
++  this.objects.length = 0
++  for(var i=this.overlays.length-1; i>=0; --i) {
++    this.overlays[i].dispose()
++  }
++  this.overlays.length = 0
+ 
+-                if (re.not_string.test(match[8]) && re.not_json.test(match[8]) && (get_type(arg) != "number" && isNaN(arg))) {
+-                    throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg)))
+-                }
++  this.gl = null
++}
+ 
+-                if (re.number.test(match[8])) {
+-                    is_positive = arg >= 0
+-                }
++proto.addObject = function(object) {
++  if(this.objects.indexOf(object) < 0) {
++    this.objects.push(object)
++    this.setDirty()
++  }
++}
+ 
+-                switch (match[8]) {
+-                    case "b":
+-                        arg = arg.toString(2)
+-                    break
+-                    case "c":
+-                        arg = String.fromCharCode(arg)
+-                    break
+-                    case "d":
+-                    case "i":
+-                        arg = parseInt(arg, 10)
+-                    break
+-                    case "j":
+-                        arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
+-                    break
+-                    case "e":
+-                        arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential()
+-                    break
+-                    case "f":
+-                        arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
+-                    break
+-                    case "g":
+-                        arg = match[7] ? parseFloat(arg).toPrecision(match[7]) : parseFloat(arg)
+-                    break
+-                    case "o":
+-                        arg = arg.toString(8)
+-                    break
+-                    case "s":
+-                        arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg)
+-                    break
+-                    case "u":
+-                        arg = arg >>> 0
+-                    break
+-                    case "x":
+-                        arg = arg.toString(16)
+-                    break
+-                    case "X":
+-                        arg = arg.toString(16).toUpperCase()
+-                    break
+-                }
+-                if (re.json.test(match[8])) {
+-                    output[output.length] = arg
+-                }
+-                else {
+-                    if (re.number.test(match[8]) && (!is_positive || match[3])) {
+-                        sign = is_positive ? "+" : "-"
+-                        arg = arg.toString().replace(re.sign, "")
+-                    }
+-                    else {
+-                        sign = ""
+-                    }
+-                    pad_character = match[4] ? match[4] === "0" ? "0" : match[4].charAt(1) : " "
+-                    pad_length = match[6] - (sign + arg).length
+-                    pad = match[6] ? (pad_length > 0 ? str_repeat(pad_character, pad_length) : "") : ""
+-                    output[output.length] = match[5] ? sign + arg + pad : (pad_character === "0" ? sign + pad + arg : pad + sign + arg)
+-                }
+-            }
+-        }
+-        return output.join("")
++proto.removeObject = function(object) {
++  var objects = this.objects
++  for(var i=0; i<objects.length; ++i) {
++    if(objects[i] === object) {
++      objects.splice(i,1)
++      this.setDirty()
++      break
+     }
++  }
++}
+ 
+-    sprintf.cache = {}
++proto.addOverlay = function(object) {
++  if(this.overlays.indexOf(object) < 0) {
++    this.overlays.push(object)
++    this.setOverlayDirty()
++  }
++}
+ 
+-    sprintf.parse = function(fmt) {
+-        var _fmt = fmt, match = [], parse_tree = [], arg_names = 0
+-        while (_fmt) {
+-            if ((match = re.text.exec(_fmt)) !== null) {
+-                parse_tree[parse_tree.length] = match[0]
+-            }
+-            else if ((match = re.modulo.exec(_fmt)) !== null) {
+-                parse_tree[parse_tree.length] = "%"
+-            }
+-            else if ((match = re.placeholder.exec(_fmt)) !== null) {
+-                if (match[2]) {
+-                    arg_names |= 1
+-                    var field_list = [], replacement_field = match[2], field_match = []
+-                    if ((field_match = re.key.exec(replacement_field)) !== null) {
+-                        field_list[field_list.length] = field_match[1]
+-                        while ((replacement_field = replacement_field.substring(field_match[0].length)) !== "") {
+-                            if ((field_match = re.key_access.exec(replacement_field)) !== null) {
+-                                field_list[field_list.length] = field_match[1]
+-                            }
+-                            else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
+-                                field_list[field_list.length] = field_match[1]
+-                            }
+-                            else {
+-                                throw new SyntaxError("[sprintf] failed to parse named argument key")
+-                            }
+-                        }
+-                    }
+-                    else {
+-                        throw new SyntaxError("[sprintf] failed to parse named argument key")
+-                    }
+-                    match[2] = field_list
+-                }
+-                else {
+-                    arg_names |= 2
+-                }
+-                if (arg_names === 3) {
+-                    throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
+-                }
+-                parse_tree[parse_tree.length] = match
+-            }
+-            else {
+-                throw new SyntaxError("[sprintf] unexpected placeholder")
+-            }
+-            _fmt = _fmt.substring(match[0].length)
+-        }
+-        return parse_tree
++proto.removeOverlay = function(object) {
++  var objects = this.overlays
++  for(var i=0; i<objects.length; ++i) {
++    if(objects[i] === object) {
++      objects.splice(i,1)
++      this.setOverlayDirty()
++      break
+     }
++  }
++}
+ 
+-    var vsprintf = function(fmt, argv, _argv) {
+-        _argv = (argv || []).slice(0)
+-        _argv.splice(0, 0, fmt)
+-        return sprintf.apply(null, _argv)
+-    }
++function createGLPlot2D(options) {
++  var gl = options.gl
++  var pickBuffer = createPick(gl, [
++    gl.drawingBufferWidth, gl.drawingBufferHeight])
++  var plot = new GLPlot2D(gl, pickBuffer)
++  plot.grid = createGrid(plot)
++  plot.text = createText(plot)
++  plot.line = createLine(plot)
++  plot.box  = createBox(plot)
++  plot.update(options)
++  return plot
++}
+ 
+-    /**
+-     * helpers
+-     */
+-    function get_type(variable) {
+-        return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase()
+-    }
++},{"./lib/box":167,"./lib/grid":168,"./lib/line":169,"./lib/text":171,"gl-select-static":189}],174:[function(require,module,exports){
+ 
+-    function str_repeat(input, multiplier) {
+-        return Array(multiplier + 1).join(input)
+-    }
++var createShader = require('gl-shader')
+ 
+-    /**
+-     * export to either browser or node.js
+-     */
+-    if (typeof exports !== "undefined") {
+-        exports.sprintf = sprintf
+-        exports.vsprintf = vsprintf
+-    }
+-    else {
+-        window.sprintf = sprintf
+-        window.vsprintf = vsprintf
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\nattribute vec2 position;\nvarying vec2 uv;\nvoid main() {\n  uv = position;\n  gl_Position = vec4(position, 0, 1);\n}"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D accumBuffer;\nvarying vec2 uv;\n\nvoid main() {\n  vec4 accum = texture2D(accumBuffer, 0.5 * (uv + 1.0));\n  gl_FragColor = min(vec4(1,1,1,1), accum);\n}"
+ 
+-        if (typeof define === "function" && define.amd) {
+-            define(function() {
+-                return {
+-                    sprintf: sprintf,
+-                    vsprintf: vsprintf
+-                }
+-            })
+-        }
+-    }
+-})(typeof window === "undefined" ? this : window);
++module.exports = function(gl) {
++  return createShader(gl, vertSrc, fragSrc, null, [ { name: 'position', type: 'vec2'}])
++}
+ 
+-},{}],218:[function(require,module,exports){
+-var hiddenStore = require('./hidden-store.js');
++},{"gl-shader":190}],175:[function(require,module,exports){
++'use strict'
+ 
+-module.exports = createStore;
++module.exports = createScene
+ 
+-function createStore() {
+-    var key = {};
++var createCamera = require('3d-view-controls')
++var createAxes   = require('gl-axes3d')
++var axesRanges   = require('gl-axes3d/properties')
++var createSpikes = require('gl-spikes3d')
++var createSelect = require('gl-select-static')
++var createFBO    = require('gl-fbo')
++var drawTriangle = require('a-big-triangle')
++var mouseChange  = require('mouse-change')
++var perspective  = require('gl-mat4/perspective')
++var createShader = require('./lib/shader')
+ 
+-    return function (obj) {
+-        if ((typeof obj !== 'object' || obj === null) &&
+-            typeof obj !== 'function'
+-        ) {
+-            throw new Error('Weakmap-shim: Key must be object')
+-        }
++function MouseSelect() {
++  this.mouse          = [-1,-1]
++  this.screen         = null
++  this.distance       = Infinity
++  this.index          = null
++  this.dataCoordinate = null
++  this.dataPosition   = null
++  this.object         = null
++  this.data           = null
++}
+ 
+-        var store = obj.valueOf(key);
+-        return store && store.identity === key ?
+-            store : hiddenStore(obj, key);
+-    };
++function getContext(canvas, options) {
++  var gl = null
++  try {
++    gl = canvas.getContext('webgl', options)
++    if(!gl) {
++      gl = canvas.getContext('experimental-webgl', options)
++    }
++  } catch(e) {
++    return null
++  }
++  return gl
+ }
+ 
+-},{"./hidden-store.js":219}],219:[function(require,module,exports){
+-module.exports = hiddenStore;
++function roundUpPow10(x) {
++  var y = Math.round(Math.log(Math.abs(x)) / Math.log(10))
++  if(y < 0) {
++    var base = Math.round(Math.pow(10, -y))
++    return Math.ceil(x*base) / base
++  } else if(y > 0) {
++    var base = Math.round(Math.pow(10, y))
++    return Math.ceil(x/base) * base
++  }
++  return Math.ceil(x)
++}
+ 
+-function hiddenStore(obj, key) {
+-    var store = { identity: key };
+-    var valueOf = obj.valueOf;
++function defaultBool(x) {
++  if(typeof x === 'boolean') {
++    return x
++  }
++  return true
++}
+ 
+-    Object.defineProperty(obj, "valueOf", {
+-        value: function (value) {
+-            return value !== key ?
+-                valueOf.apply(this, arguments) : store;
+-        },
+-        writable: true
+-    });
++function createScene(options) {
++  options = options || {}
+ 
+-    return store;
+-}
++  var stopped = false
+ 
+-},{}],220:[function(require,module,exports){
+-// Original - @Gozola. 
+-// https://gist.github.com/Gozala/1269991
+-// This is a reimplemented version (with a few bug fixes).
++  var pixelRatio = options.pixelRatio || parseFloat(window.devicePixelRatio)
+ 
+-var createStore = require('./create-store.js');
++  var canvas = options.canvas
++  if(!canvas) {
++    canvas = document.createElement('canvas')
++    if(options.container) {
++      var container = options.container
++      container.appendChild(canvas)
++    } else {
++      document.body.appendChild(canvas)
++    }
++  }
+ 
+-module.exports = weakMap;
++  var gl = options.gl
++  if(!gl) {
++    gl = getContext(canvas,
++      options.glOptions || {
++        premultipliedAlpha: true,
++        antialias: true
++      })
++  }
++  if(!gl) {
++    throw new Error('webgl not supported')
++  }
+ 
+-function weakMap() {
+-    var privates = createStore();
++  //Initial bounds
++  var bounds = options.bounds || [[-10,-10,-10], [10,10,10]]
+ 
+-    return {
+-        'get': function (key, fallback) {
+-            var store = privates(key)
+-            return store.hasOwnProperty('value') ?
+-                store.value : fallback
+-        },
+-        'set': function (key, value) {
+-            privates(key).value = value;
+-        },
+-        'has': function(key) {
+-            return 'value' in privates(key);
+-        },
+-        'delete': function (key) {
+-            return delete privates(key).value;
+-        }
+-    }
+-}
++  //Create selection
++  var selection = new MouseSelect()
+ 
+-},{"./create-store.js":218}],221:[function(require,module,exports){
+-'use strict'
++  //Accumulation buffer
++  var accumBuffer = createFBO(gl,
++    [gl.drawingBufferWidth, gl.drawingBufferHeight], {
++      preferFloat: true
++    })
+ 
+-module.exports = createSpikes2D
++  var accumShader = createShader(gl)
+ 
+-function GLSpikes2D(plot) {
+-  this.plot = plot
+-  this.enable = [true, true, false, false]
+-  this.width  = [1, 1, 1, 1]
+-  this.color  = [[0,0,0,1],
+-                 [0,0,0,1],
+-                 [0,0,0,1],
+-                 [0,0,0,1]]
+-  this.center = [Infinity, Infinity]
+-}
++  //Create a camera
++  var cameraOptions = options.camera || {
++    eye:    [2,0,0],
++    center: [0,0,0],
++    up:     [0,1,0],
++    zoomMin: 0.1,
++    zoomMax: 100,
++    mode:    'turntable'
++  }
++
++  //Create axes
++  var axesOptions = options.axes || {}
++  var axes = createAxes(gl, axesOptions)
++  axes.enable = !axesOptions.disable
++
++  //Create spikes
++  var spikeOptions = options.spikes || {}
++  var spikes = createSpikes(gl, spikeOptions)
+ 
+-var proto = GLSpikes2D.prototype
++  //Object list is empty initially
++  var objects         = []
++  var pickBufferIds   = []
++  var pickBufferCount = []
++  var pickBuffers     = []
+ 
+-proto.update = function(options) {
+-  options = options || {}
+-  this.enable = (options.enable || [true,true,false,false]).slice()
+-  this.width  = (options.width || [1,1,1,1]).slice()
+-  this.color  = (options.color || [
+-                  [0,0,0,1],
+-                  [0,0,0,1],
+-                  [0,0,0,1],
+-                  [0,0,0,1]]).map(function(x) { return x.slice() })
+-  this.center = (options.center || [Infinity,Infinity]).slice()
+-  this.plot.setOverlayDirty()
+-}
++  //Dirty flag, skip redraw if scene static
++  var dirty       = true
++  var pickDirty   = true
+ 
+-proto.draw = function() {
+-  var spikeEnable = this.enable
+-  var spikeWidth  = this.width
+-  var spikeColor  = this.color
+-  var spikeCenter = this.center
+-  var plot        = this.plot
+-  var line        = plot.line
++  var projection     = new Array(16)
++  var model          = new Array(16)
+ 
+-  var dataBox     = plot.dataBox
+-  var viewPixels  = plot.viewBox
++  var cameraParams = {
++    view:         null,
++    projection:   projection,
++    model:        model
++  }
+ 
+-  line.bind()
++  var pickDirty = true
+ 
+-  if(dataBox[0] <= spikeCenter[0] && spikeCenter[0] <= dataBox[2] &&
+-     dataBox[1] <= spikeCenter[1] && spikeCenter[1] <= dataBox[3]) {
++  var viewShape = [ gl.drawingBufferWidth, gl.drawingBufferHeight ]
+ 
+-    var centerX = viewPixels[0] + (spikeCenter[0] - dataBox[0]) / (dataBox[2] - dataBox[0]) * (viewPixels[2] - viewPixels[0])
+-    var centerY = viewPixels[1] + (spikeCenter[1] - dataBox[1]) / (dataBox[3] - dataBox[1]) * (viewPixels[3] - viewPixels[1])
++  //Create scene object
++  var scene = {
++    gl:           gl,
++    contextLost:  false,
++    pixelRatio:   options.pixelRatio || parseFloat(window.devicePixelRatio),
++    canvas:       canvas,
++    selection:    selection,
++    camera:       createCamera(canvas, cameraOptions),
++    axes:         axes,
++    axesPixels:   null,
++    spikes:       spikes,
++    bounds:       bounds,
++    objects:      objects,
++    shape:        viewShape,
++    aspect:       options.aspectRatio || [1,1,1],
++    pickRadius:   options.pickRadius || 10,
++    zNear:        options.zNear || 0.01,
++    zFar:         options.zFar  || 1000,
++    fovy:         options.fovy  || Math.PI/4,
++    clearColor:   options.clearColor || [0,0,0,0],
++    autoResize:   defaultBool(options.autoResize),
++    autoBounds:   defaultBool(options.autoBounds),
++    autoScale:    !!options.autoScale,
++    autoCenter:   defaultBool(options.autoCenter),
++    clipToBounds: defaultBool(options.clipToBounds),
++    snapToData:   !!options.snapToData,
++    onselect:     options.onselect || null,
++    onrender:     options.onrender || null,
++    onclick:      options.onclick  || null,
++    cameraParams: cameraParams,
++    oncontextloss: null,
++    mouseListener: null
++  }
+ 
+-    if(spikeEnable[0]) {
+-     line.drawLine(
+-       centerX, centerY,
+-       viewPixels[0], centerY,
+-       spikeWidth[0], spikeColor[0])
++  var pickShape = [ (gl.drawingBufferWidth/scene.pixelRatio)|0, (gl.drawingBufferHeight/scene.pixelRatio)|0 ]
++
++  function resizeListener() {
++    if(stopped) {
++      return
+     }
+-    if(spikeEnable[1]) {
+-     line.drawLine(
+-       centerX, centerY,
+-       centerX, viewPixels[1],
+-       spikeWidth[1], spikeColor[1])
++    if(!scene.autoResize) {
++      return
+     }
+-    if(spikeEnable[2]) {
+-      line.drawLine(
+-        centerX, centerY,
+-        viewPixels[2], centerY,
+-        spikeWidth[2], spikeColor[2])
++    var parent = canvas.parentNode
++    var width  = 1
++    var height = 1
++    if(parent && parent !== document.body) {
++      width  = parent.clientWidth
++      height = parent.clientHeight
++    } else {
++      width  = window.innerWidth
++      height = window.innerHeight
+     }
+-    if(spikeEnable[3]) {
+-      line.drawLine(
+-        centerX, centerY,
+-        centerX, viewPixels[3],
+-        spikeWidth[3], spikeColor[3])
++    var nextWidth  = Math.ceil(width  * scene.pixelRatio)|0
++    var nextHeight = Math.ceil(height * scene.pixelRatio)|0
++    if(nextWidth !== canvas.width || nextHeight !== canvas.height) {
++      canvas.width   = nextWidth
++      canvas.height  = nextHeight
++      var style = canvas.style
++      style.position = style.position || 'absolute'
++      style.left     = '0px'
++      style.top      = '0px'
++      style.width    = width  + 'px'
++      style.height   = height + 'px'
++      dirty = true
+     }
+   }
+-}
+-
+-proto.dispose = function() {
+-  this.plot.removeOverlay(this)
+-}
+-
+-function createSpikes2D(plot, options) {
+-  var spikes = new GLSpikes2D(plot)
+-  spikes.update(options)
+-  plot.addOverlay(spikes)
+-  return spikes
+-}
++  if(scene.autoResize) {
++    resizeListener()
++  }
++  window.addEventListener('resize', resizeListener)
+ 
+-},{}],222:[function(require,module,exports){
+-var createShader = require('gl-shader')
++  function reallocPickIds() {
++    var numObjs = objects.length
++    var numPick = pickBuffers.length
++    for(var i=0; i<numPick; ++i) {
++      pickBufferCount[i] = 0
++    }
++    obj_loop:
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
++      var pickCount = obj.pickSlots
++      if(!pickCount) {
++        pickBufferIds[i] = -1
++        continue
++      }
++      for(var j=0; j<numPick; ++j) {
++        if(pickBufferCount[j] + pickCount < 255) {
++          pickBufferIds[i] = j
++          obj.setPickBase(pickBufferCount[j]+1)
++          pickBufferCount[j] += pickCount
++          continue obj_loop
++        }
++      }
++      //Create new pick buffer
++      var nbuffer = createSelect(gl, viewShape)
++      pickBufferIds[i] = numPick
++      pickBuffers.push(nbuffer)
++      pickBufferCount.push(pickCount)
++      obj.setPickBase(1)
++      numPick += 1
++    }
++    while(numPick > 0 && pickBufferCount[numPick-1] === 0) {
++      pickBufferCount.pop()
++      pickBuffers.pop().dispose()
++    }
++  }
+ 
++  scene.update = function(options) {
++    if(stopped) {
++      return
++    }
++    options = options || {}
++    dirty = true
++    pickDirty = true
++  }
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute vec3 f;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection, inverseModel;\nuniform vec3 lightPosition, eyePosition;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  worldCoordinate = vec3(uv.zw, f.x);\n  vec4 worldPosition = model * vec4(worldCoordinate, 1.0);\n  vec4 clipPosition = projection * view * worldPosition;\n  gl_Position = clipPosition;\n  kill = f.y;\n  value = f.z;\n  planeCoordinate = uv.xy;\n\n  //Lighting geometry parameters\n  vec4 cameraCoordinate = view * worldPosition;\n  cameraCoordinate.xyz /= cameraCoordinate.w;\n  lightDirection = lightPosition - cameraCoordinate.xyz;\n  eyeDirection   = eyePosition - cameraCoordinate.xyz;\n  surfaceNormal  = normalize((vec4(normal,0) * inverseModel).xyz);\n}\n"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat beckmannSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness) {\n  return beckmannDistribution_2_0(dot(surfaceNormal, normalize(lightDirection + viewDirection)), roughness);\n}\n\n\n\nuniform vec3 lowerBound, upperBound;\nuniform float contourTint;\nuniform vec4 contourColor;\nuniform sampler2D colormap;\nuniform vec3 clipBounds[2];\nuniform float roughness, fresnel, kambient, kdiffuse, kspecular, opacity;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(surfaceNormal);\n  vec3 V = normalize(eyeDirection);\n  vec3 L = normalize(lightDirection);\n\n  if(gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = beckmannSpecular_1_1(L, V, N, roughness);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = texture2D(colormap, vec2(value, value));\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = mix(litColor, contourColor, contourTint) * opacity;\n}\n"
+-var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute float f;\n\nuniform mat3 permutation;\nuniform mat4 model, view, projection;\nuniform float height, zOffset;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  vec3 dataCoordinate = permutation * vec3(uv.xy, height);\n  vec4 worldPosition = model * vec4(dataCoordinate, 1.0);\n\n  vec4 clipPosition = projection * view * worldPosition;\n  clipPosition.z = clipPosition.z + zOffset;\n\n  gl_Position = clipPosition;\n  value = f;\n  kill = -1.0;\n  worldCoordinate = dataCoordinate;\n  planeCoordinate = uv.zw;\n\n  //Don't do lighting for contours\n  surfaceNormal   = vec3(1,0,0);\n  eyeDirection    = vec3(0,1,0);\n  lightDirection  = vec3(0,0,1);\n}\n"
+-var pickSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec2 shape;\nuniform vec3 clipBounds[2];\nuniform float pickId;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 surfaceNormal;\n\nvec2 splitFloat(float v) {\n  float vh = 255.0 * v;\n  float upper = floor(vh);\n  float lower = fract(vh);\n  return vec2(upper / 255.0, floor(lower * 16.0) / 16.0);\n}\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n  vec2 ux = splitFloat(planeCoordinate.x / shape.x);\n  vec2 uy = splitFloat(planeCoordinate.y / shape.y);\n  gl_FragColor = vec4(pickId, ux.x, uy.x, ux.y + (uy.y/16.0));\n}\n"
++  scene.add = function(obj) {
++    if(stopped) {
++      return
++    }
++    obj.axes = axes
++    objects.push(obj)
++    pickBufferIds.push(-1)
++    dirty = true
++    pickDirty = true
++    reallocPickIds()
++  }
+ 
+-exports.createShader = function (gl) {
+-  var shader = createShader(gl, vertSrc, fragSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  shader.attributes.normal.location = 2
+-  return shader
+-}
+-exports.createPickShader = function (gl) {
+-  var shader = createShader(gl, vertSrc, pickSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  shader.attributes.normal.location = 2
+-  return shader
+-}
+-exports.createContourShader = function (gl) {
+-  var shader = createShader(gl, contourVertSrc, fragSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'float'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  return shader
+-}
+-exports.createPickContourShader = function (gl) {
+-  var shader = createShader(gl, contourVertSrc, pickSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'float'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  return shader
+-}
++  scene.remove = function(obj) {
++    if(stopped) {
++      return
++    }
++    var idx = objects.indexOf(obj)
++    if(idx < 0) {
++      return
++    }
++    objects.splice(idx, 1)
++    pickBufferIds.pop()
++    dirty = true
++    pickDirty = true
++    reallocPickIds()
++  }
+ 
+-},{"gl-shader":203}],223:[function(require,module,exports){
+-arguments[4][22][0].apply(exports,arguments)
+-},{"dup":22}],224:[function(require,module,exports){
+-'use strict'
++  scene.dispose = function() {
++    if(stopped) {
++      return
++    }
+ 
+-module.exports      = gradient
++    stopped = true
+ 
+-var dup             = require('dup')
+-var cwiseCompiler   = require('cwise-compiler')
++    window.removeEventListener('resize', resizeListener)
++    canvas.removeEventListener('webglcontextlost', checkContextLoss)
++    scene.mouseListener.enabled = false
+ 
+-var TEMPLATE_CACHE  = {}
+-var GRADIENT_CACHE  = {}
++    if(scene.contextLost) {
++      return
++    }
+ 
+-var EmptyProc = {
+-  body: "",
+-  args: [],
+-  thisVars: [],
+-  localVars: []
+-}
++    //Destroy objects
++    axes.dispose()
++    spikes.dispose()
++    for(var i=0; i<objects.length; ++i) {
++      objects[i].dispose()
++    }
+ 
+-var centralDiff = cwiseCompiler({
+-  args: [ 'array', 'array', 'array' ],
+-  pre: EmptyProc,
+-  post: EmptyProc,
+-  body: {
+-    args: [ {
+-      name: 'out', 
+-      lvalue: true,
+-      rvalue: false,
+-      count: 1
+-    }, {
+-      name: 'left', 
+-      lvalue: false,
+-      rvalue: true,
+-      count: 1
+-    }, {
+-      name: 'right', 
+-      lvalue: false,
+-      rvalue: true,
+-      count: 1
+-    }],
+-    body: "out=0.5*(left-right)",
+-    thisVars: [],
+-    localVars: []
+-  },
+-  funcName: 'cdiff'
+-})
++    //Clean up buffers
++    accumBuffer.dispose()
++    for(var i=0; i<pickBuffers.length; ++i) {
++      pickBuffers[i].dispose()
++    }
+ 
+-var zeroOut = cwiseCompiler({
+-  args: [ 'array' ],
+-  pre: EmptyProc,
+-  post: EmptyProc,
+-  body: {
+-    args: [ {
+-      name: 'out', 
+-      lvalue: true,
+-      rvalue: false,
+-      count: 1
+-    }],
+-    body: "out=0",
+-    thisVars: [],
+-    localVars: []
+-  },
+-  funcName: 'zero'
+-})
++    //Clean up shaders
++    accumShader.dispose()
+ 
+-function generateTemplate(d) {
+-  if(d in TEMPLATE_CACHE) {
+-    return TEMPLATE_CACHE[d]
+-  }
+-  var code = []
+-  for(var i=0; i<d; ++i) {
+-    code.push('out', i, 's=0.5*(inp', i, 'l-inp', i, 'r);')
+-  }
+-  var args = [ 'array' ]
+-  var names = ['junk']
+-  for(var i=0; i<d; ++i) {
+-    args.push('array')
+-    names.push('out' + i + 's')
+-    var o = dup(d)
+-    o[i] = -1
+-    args.push({
+-      array: 0,
+-      offset: o.slice()
+-    })
+-    o[i] = 1
+-    args.push({
+-      array: 0,
+-      offset: o.slice()
+-    })
+-    names.push('inp' + i + 'l', 'inp' + i + 'r')
++    //Release all references
++    gl = null
++    axes = null
++    spikes = null
++    objects = []
+   }
+-  return TEMPLATE_CACHE[d] = cwiseCompiler({
+-    args: args,
+-    pre:  EmptyProc,
+-    post: EmptyProc,
+-    body: {
+-      body: code.join(''),
+-      args: names.map(function(n) {
+-        return {
+-          name: n,
+-          lvalue: n.indexOf('out') === 0,
+-          rvalue: n.indexOf('inp') === 0,
+-          count: (n!=='junk')|0
+-        }
+-      }),
+-      thisVars: [],
+-      localVars: []
+-    },
+-    funcName: 'fdTemplate' + d
+-  })
+-}
+ 
+-function generateGradient(boundaryConditions) {
+-  var token = boundaryConditions.join()
+-  var proc = GRADIENT_CACHE[token]
+-  if(proc) {
+-    return proc
+-  }
++  //Update mouse position
++  var mouseRotating = false
+ 
+-  var d = boundaryConditions.length
+-  var code = ['function gradient(dst,src){var s=src.shape.slice();' ]
+-  
+-  function handleBoundary(facet) {
+-    var cod = d - facet.length
++  var prevButtons = 0
+ 
+-    var loStr = []
+-    var hiStr = []
+-    var pickStr = []
+-    for(var i=0; i<d; ++i) {
+-      if(facet.indexOf(i+1) >= 0) {
+-        pickStr.push('0')
+-      } else if(facet.indexOf(-(i+1)) >= 0) {
+-        pickStr.push('s['+i+']-1')
+-      } else {
+-        pickStr.push('-1')
+-        loStr.push('1')
+-        hiStr.push('s['+i+']-2')
+-      }
+-    }
+-    var boundStr = '.lo(' + loStr.join() + ').hi(' + hiStr.join() + ')'
+-    if(loStr.length === 0) {
+-      boundStr = ''
+-    }
+-        
+-    if(cod > 0) {
+-      code.push('if(1') 
+-      for(var i=0; i<d; ++i) {
+-        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
+-          continue
+-        }
+-        code.push('&&s[', i, ']>2')
+-      }
+-      code.push('){grad', cod, '(src.pick(', pickStr.join(), ')', boundStr)
+-      for(var i=0; i<d; ++i) {
+-        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
+-          continue
+-        }
+-        code.push(',dst.pick(', pickStr.join(), ',', i, ')', boundStr)
+-      }
+-      code.push(');')
++  scene.mouseListener = mouseChange(canvas, function(buttons, x, y) {
++    if(stopped) {
++      return
+     }
+ 
+-    for(var i=0; i<facet.length; ++i) {
+-      var bnd = Math.abs(facet[i])-1
+-      var outStr = 'dst.pick(' + pickStr.join() + ',' + bnd + ')' + boundStr
+-      switch(boundaryConditions[bnd]) {
+-
+-        case 'clamp':
+-          var cPickStr = pickStr.slice()
+-          var dPickStr = pickStr.slice()
+-          if(facet[i] < 0) {
+-            cPickStr[bnd] = 's[' + bnd + ']-2'
+-          } else {
+-            dPickStr[bnd] = '1'
+-          }
+-          if(cod === 0) {
+-            code.push('if(s[', bnd, ']>1){dst.set(',
+-              pickStr.join(), ',', bnd, ',0.5*(src.get(',
+-                cPickStr.join(), ')-src.get(',
+-                dPickStr.join(), ')))}else{dst.set(',
+-              pickStr.join(), ',', bnd, ',0)};')
+-          } else {
+-            code.push('if(s[', bnd, ']>1){diff(', outStr, 
+-                ',src.pick(', cPickStr.join(), ')', boundStr, 
+-                ',src.pick(', dPickStr.join(), ')', boundStr, 
+-                ');}else{zero(', outStr, ');};')
+-          }
+-        break
++    var numPick = pickBuffers.length
++    var numObjs = objects.length
++    var prevObj = selection.object
+ 
+-        case 'mirror':
+-          if(cod === 0) {
+-            code.push('dst.set(', pickStr.join(), ',', bnd, ',0);')
+-          } else {
+-            code.push('zero(', outStr, ');')
+-          }
+-        break
++    selection.distance = Infinity
++    selection.mouse[0] = x
++    selection.mouse[1] = y
++    selection.object = null
++    selection.screen = null
++    selection.dataCoordinate = selection.dataPosition = null
+ 
+-        case 'wrap':
+-          var aPickStr = pickStr.slice()
+-          var bPickStr = pickStr.slice()
+-          if(facet[i] < 0) {
+-            aPickStr[bnd] = 's[' + bnd + ']-2'
+-            bPickStr[bnd] = '0'
+-            
+-          } else {
+-            aPickStr[bnd] = 's[' + bnd + ']-1'
+-            bPickStr[bnd] = '1'
+-          }
+-          if(cod === 0) {
+-            code.push('if(s[', bnd, ']>2){dst.set(',
+-              pickStr.join(), ',', bnd, ',0.5*(src.get(',
+-                aPickStr.join(), ')-src.get(',
+-                bPickStr.join(), ')))}else{dst.set(',
+-              pickStr.join(), ',', bnd, ',0)};')
+-          } else {
+-            code.push('if(s[', bnd, ']>2){diff(', outStr, 
+-                ',src.pick(', aPickStr.join(), ')', boundStr, 
+-                ',src.pick(', bPickStr.join(), ')', boundStr, 
+-                ');}else{zero(', outStr, ');};')
+-          }
+-        break
++    var change = false
+ 
+-        default:
+-          throw new Error('ndarray-gradient: Invalid boundary condition')
++    if(buttons && prevButtons) {
++      mouseRotating = true
++    } else {
++      if(mouseRotating) {
++        pickDirty = true
+       }
+-    }
++      mouseRotating = false
+ 
+-    if(cod > 0) {
+-      code.push('};')
++      for(var i=0; i<numPick; ++i) {
++        var result = pickBuffers[i].query(x, pickShape[1] - y - 1, scene.pickRadius)
++        if(result) {
++          if(result.distance > selection.distance) {
++            continue
++          }
++          for(var j=0; j<numObjs; ++j) {
++            var obj = objects[j]
++            if(pickBufferIds[j] !== i) {
++              continue
++            }
++            var objPick = obj.pick(result)
++            if(objPick) {
++              selection.buttons        = buttons
++              selection.screen         = result.coord
++              selection.distance       = result.distance
++              selection.object         = obj
++              selection.index          = objPick.distance
++              selection.dataPosition   = objPick.position
++              selection.dataCoordinate = objPick.dataCoordinate
++              selection.data           = objPick
++              change = true
++            }
++          }
++        }
++      }
+     }
+-  }
+ 
+-  //Enumerate ridges, facets, etc. of hypercube
+-  for(var i=0; i<(1<<d); ++i) {
+-    var faces = []
+-    for(var j=0; j<d; ++j) {
+-      if(i & (1<<j)) {
+-        faces.push(j+1)
++    if(prevObj && prevObj !== selection.object) {
++      if(prevObj.highlight) {
++        prevObj.highlight(null)
+       }
++      dirty = true
+     }
+-    for(var k=0; k<(1<<faces.length); ++k) {
+-      var sfaces = faces.slice()
+-      for(var j=0; j<faces.length; ++j) {
+-        if(k & (1<<j)) {
+-          sfaces[j] = -sfaces[j]
+-        }
++    if(selection.object) {
++      if(selection.object.highlight) {
++        selection.object.highlight(selection.data)
+       }
+-      handleBoundary(sfaces)
++      dirty = true
+     }
+-  }
+-
+-  code.push('return dst;};return gradient')
+ 
+-  //Compile and link routine, save cached procedure
+-  var linkNames = [ 'diff', 'zero' ]
+-  var linkArgs  = [ centralDiff, zeroOut ]
+-  for(var i=1; i<=d; ++i) {
+-    linkNames.push('grad' + i)
+-    linkArgs.push(generateTemplate(i))
+-  }
+-  linkNames.push(code.join(''))
++    change = change || (selection.object !== prevObj)
++    if(change && scene.onselect) {
++      scene.onselect(selection)
++    }
+ 
+-  var link = Function.apply(void 0, linkNames)
+-  var proc = link.apply(void 0, linkArgs)
+-  TEMPLATE_CACHE[token] = proc
+-  return proc
+-}
++    if((buttons & 1) && !(prevButtons & 1) && scene.onclick) {
++      scene.onclick(selection)
++    }
++    prevButtons = buttons
++  })
+ 
+-function gradient(out, inp, bc) {
+-  if(Array.isArray(bc)) {
+-    if(bc.length !== inp.dimension) {
+-      throw new Error('ndarray-gradient: invalid boundary conditions')
++  function checkContextLoss() {
++    if(scene.contextLost) {
++      return true
+     }
+-  } else if(typeof bc === 'string') {
+-    bc = dup(inp.dimension, bc)
+-  } else {
+-    bc = dup(inp.dimension, 'clamp')
+-  }
+-  if(out.dimension !== inp.dimension + 1) {
+-    throw new Error('ndarray-gradient: output dimension must be +1 input dimension')
+-  }
+-  if(out.shape[inp.dimension] !== inp.dimension) {
+-    throw new Error('ndarray-gradient: output shape must match input shape')
+-  }
+-  for(var i=0; i<inp.dimension; ++i) {
+-    if(out.shape[i] !== inp.shape[i]) {
+-      throw new Error('ndarray-gradient: shape mismatch')
++    if(gl.isContextLost()) {
++      scene.contextLost = true
++      scene.mouseListener.enabled = false
++      scene.selection.object = null
++      if(scene.oncontextloss) {
++        scene.oncontextloss()
++      }
+     }
+   }
+-  if(inp.size === 0) {
+-    return out
+-  }
+-  if(inp.dimension <= 0) {
+-    out.set(0)
+-    return out
+-  }
+-  var cached = generateGradient(bc)
+-  return cached(out, inp)
+-}
+-},{"cwise-compiler":115,"dup":121}],225:[function(require,module,exports){
+-"use strict"
+-
+-var ndarray = require("ndarray")
+-var do_convert = require("./doConvert.js")
+-
+-module.exports = function convert(arr, result) {
+-  var shape = [], c = arr, sz = 1
+-  while(c instanceof Array) {
+-    shape.push(c.length)
+-    sz *= c.length
+-    c = c[0]
+-  }
+-  if(shape.length === 0) {
+-    return ndarray()
+-  }
+-  if(!result) {
+-    result = ndarray(new Float64Array(sz), shape)
+-  }
+-  do_convert(result, arr)
+-  return result
+-}
+-
+-},{"./doConvert.js":226,"ndarray":433}],226:[function(require,module,exports){
+-module.exports=require('cwise-compiler')({"args":["array","scalar","index"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{\nvar _inline_1_v=_inline_1_arg1_,_inline_1_i\nfor(_inline_1_i=0;_inline_1_i<_inline_1_arg2_.length-1;++_inline_1_i) {\n_inline_1_v=_inline_1_v[_inline_1_arg2_[_inline_1_i]]\n}\n_inline_1_arg0_=_inline_1_v[_inline_1_arg2_[_inline_1_arg2_.length-1]]\n}","args":[{"name":"_inline_1_arg0_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_1_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_1_arg2_","lvalue":false,"rvalue":true,"count":4}],"thisVars":[],"localVars":["_inline_1_i","_inline_1_v"]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"funcName":"convert","blockSize":64})
+-
+-},{"cwise-compiler":115}],227:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = createSurfacePlot
+-
+-var bits = require('bit-twiddle')
+-var createBuffer = require('gl-buffer')
+-var createVAO = require('gl-vao')
+-var createTexture = require('gl-texture2d')
+-var pool = require('typedarray-pool')
+-var colormap = require('colormap')
+-var ops = require('ndarray-ops')
+-var pack = require('ndarray-pack')
+-var ndarray = require('ndarray')
+-var surfaceNets = require('surface-nets')
+-var multiply = require('gl-mat4/multiply')
+-var invert = require('gl-mat4/invert')
+-var bsearch = require('binary-search-bounds')
+-var gradient = require('ndarray-gradient')
+-var shaders = require('./lib/shaders')
+-
+-var createShader = shaders.createShader
+-var createContourShader = shaders.createContourShader
+-var createPickShader = shaders.createPickShader
+-var createPickContourShader = shaders.createPickContourShader
+-
+-var SURFACE_VERTEX_SIZE = 4 * (4 + 3 + 3)
+ 
+-var IDENTITY = [
+-  1, 0, 0, 0,
+-  0, 1, 0, 0,
+-  0, 0, 1, 0,
+-  0, 0, 0, 1 ]
++  canvas.addEventListener('webglcontextlost', checkContextLoss)
+ 
+-var QUAD = [
+-  [0, 0],
+-  [0, 1],
+-  [1, 0],
+-  [1, 1],
+-  [1, 0],
+-  [0, 1]
+-]
++  //Render the scene for mouse picking
++  function renderPick() {
++    if(checkContextLoss()) {
++      return
++    }
+ 
+-var PERMUTATIONS = [
+-  [0, 0, 0, 0, 0, 0, 0, 0, 0],
+-  [0, 0, 0, 0, 0, 0, 0, 0, 0],
+-  [0, 0, 0, 0, 0, 0, 0, 0, 0]
+-]
++    gl.colorMask(true, true, true, true)
++    gl.depthMask(true)
++    gl.disable(gl.BLEND)
++    gl.enable(gl.DEPTH_TEST)
+ 
+-;(function () {
+-  for (var i = 0; i < 3; ++i) {
+-    var p = PERMUTATIONS[i]
+-    var u = (i + 1) % 3
+-    var v = (i + 2) % 3
+-    p[u + 0] = 1
+-    p[v + 3] = 1
+-    p[i + 6] = 1
++    var numObjs = objects.length
++    var numPick = pickBuffers.length
++    for(var j=0; j<numPick; ++j) {
++      var buf = pickBuffers[j]
++      buf.shape = pickShape
++      buf.begin()
++      for(var i=0; i<numObjs; ++i) {
++        if(pickBufferIds[i] !== j) {
++          continue
++        }
++        var obj = objects[i]
++        if(obj.drawPick) {
++          obj.pixelRatio = 1
++          obj.drawPick(cameraParams)
++        }
++      }
++      buf.end()
++    }
+   }
+-})()
+ 
+-function SurfacePickResult (position, index, uv, level, dataCoordinate) {
+-  this.position = position
+-  this.index = index
+-  this.uv = uv
+-  this.level = level
+-  this.dataCoordinate = dataCoordinate
+-}
++  var nBounds = [
++    [ Infinity, Infinity, Infinity],
++    [-Infinity,-Infinity,-Infinity]]
+ 
+-var N_COLORS = 265
++  var prevBounds = [nBounds[0].slice(), nBounds[1].slice()]
+ 
+-function genColormap (name) {
+-  var x = pack([colormap({
+-    colormap: name,
+-    nshades: N_COLORS,
+-    format: 'rgba'
+-  }).map(function (c) {
+-    return [c[0], c[1], c[2], 255 * c[3]]
+-  })])
+-  ops.divseq(x, 255.0)
+-  return x
+-}
++  function redraw() {
++    if(checkContextLoss()) {
++      return
++    }
+ 
+-function SurfacePlot (
+-  gl,
+-  shape,
+-  bounds,
+-  shader,
+-  pickShader,
+-  coordinates,
+-  vao,
+-  colorMap,
+-  contourShader,
+-  contourPickShader,
+-  contourBuffer,
+-  contourVAO,
+-  dynamicBuffer,
+-  dynamicVAO) {
+-  this.gl = gl
+-  this.shape = shape
+-  this.bounds = bounds
+-  this.intensityBounds = [];
++    resizeListener()
+ 
+-  this._shader = shader
+-  this._pickShader = pickShader
+-  this._coordinateBuffer = coordinates
+-  this._vao = vao
+-  this._colorMap = colorMap
++    //Tick camera
++    var cameraMoved = scene.camera.tick()
++    cameraParams.view = scene.camera.matrix
++    dirty     = dirty || cameraMoved
++    pickDirty = pickDirty || cameraMoved
+ 
+-  this._contourShader = contourShader
+-  this._contourPickShader = contourPickShader
+-  this._contourBuffer = contourBuffer
+-  this._contourVAO = contourVAO
+-  this._contourOffsets = [[], [], []]
+-  this._contourCounts = [[], [], []]
+-  this._vertexCount = 0
++      //Set pixel ratio
++    axes.pixelRatio   = scene.pixelRatio
++    spikes.pixelRatio = scene.pixelRatio
+ 
+-  this._pickResult = new SurfacePickResult([0, 0, 0], [0, 0], [0, 0], [0, 0, 0], [0, 0, 0])
++    //Check if any objects changed, recalculate bounds
++    var numObjs = objects.length
++    var lo = nBounds[0]
++    var hi = nBounds[1]
++    lo[0] = lo[1] = lo[2] =  Infinity
++    hi[0] = hi[1] = hi[2] = -Infinity
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
+ 
+-  this._dynamicBuffer = dynamicBuffer
+-  this._dynamicVAO = dynamicVAO
+-  this._dynamicOffsets = [0, 0, 0]
+-  this._dynamicCounts = [0, 0, 0]
++      //Set the axes properties for each object
++      obj.pixelRatio = scene.pixelRatio
++      obj.axes = scene.axes
+ 
+-  this.contourWidth = [ 1, 1, 1 ]
+-  this.contourLevels = [[1], [1], [1]]
+-  this.contourTint = [0, 0, 0]
+-  this.contourColor = [[0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1]]
++      dirty = dirty || !!obj.dirty
++      pickDirty = pickDirty || !!obj.dirty
++      var obb = obj.bounds
++      if(obb) {
++        var olo = obb[0]
++        var ohi = obb[1]
++        for(var j=0; j<3; ++j) {
++          lo[j] = Math.min(lo[j], olo[j])
++          hi[j] = Math.max(hi[j], ohi[j])
++        }
++      }
++    }
+ 
+-  this.showContour = true
+-  this.showSurface = true
++    //Recalculate bounds
++    var bounds = scene.bounds
++    if(scene.autoBounds) {
++      for(var j=0; j<3; ++j) {
++        if(hi[j] < lo[j]) {
++          lo[j] = -1
++          hi[j] = 1
++        } else {
++          if(lo[j] === hi[j]) {
++            lo[j] -= 1
++            hi[j] += 1
++          }
++          var padding = 0.05 * (hi[j] - lo[j])
++          lo[j] = lo[j] - padding
++          hi[j] = hi[j] + padding
++        }
++        bounds[0][j] = lo[j]
++        bounds[1][j] = hi[j]
++      }
++    }
+ 
+-  this.enableHighlight = [true, true, true]
+-  this.highlightColor = [[0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1]]
+-  this.highlightTint = [ 1, 1, 1 ]
+-  this.highlightLevel = [-1, -1, -1]
++    var boundsChanged = false
++    for(var j=0; j<3; ++j) {
++        boundsChanged = boundsChanged ||
++            (prevBounds[0][j] !== bounds[0][j])  ||
++            (prevBounds[1][j] !== bounds[1][j])
++        prevBounds[0][j] = bounds[0][j]
++        prevBounds[1][j] = bounds[1][j]
++    }
+ 
+-  // Dynamic contour options
+-  this.enableDynamic = [ true, true, true ]
+-  this.dynamicLevel = [ NaN, NaN, NaN ]
+-  this.dynamicColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ]
+-  this.dynamicTint = [ 1, 1, 1 ]
+-  this.dynamicWidth = [ 1, 1, 1 ]
++    if(boundsChanged) {
++      var tickSpacing = [0,0,0]
++      for(var i=0; i<3; ++i) {
++        tickSpacing[i] = roundUpPow10((bounds[1][i]-bounds[0][i]) / 10.0)
++      }
++      if(axes.autoTicks) {
++        axes.update({
++          bounds: bounds,
++          tickSpacing: tickSpacing
++        })
++      } else {
++        axes.update({
++          bounds: bounds
++        })
++      }
++    }
+ 
+-  this.axesBounds = [[Infinity, Infinity, Infinity], [-Infinity, -Infinity, -Infinity]]
+-  this.surfaceProject = [ false, false, false ]
+-  this.contourProject = [[ false, false, false ],
+-    [ false, false, false ],
+-    [ false, false, false ]]
++    //Recalculate bounds
++    pickDirty = pickDirty || boundsChanged
++    dirty = dirty || boundsChanged
+ 
+-  this.colorBounds = [ false, false ]
++    //Get scene
++    var width  = gl.drawingBufferWidth
++    var height = gl.drawingBufferHeight
++    viewShape[0] = width
++    viewShape[1] = height
++    pickShape[0] = Math.max(width/scene.pixelRatio, 1)|0
++    pickShape[1] = Math.max(height/scene.pixelRatio, 1)|0
+ 
+-  // Store xyz fields, need this for picking
+-  this._field = [
+-    ndarray(pool.mallocFloat(1024), [0, 0]),
+-    ndarray(pool.mallocFloat(1024), [0, 0]),
+-    ndarray(pool.mallocFloat(1024), [0, 0]) ]
++    //Compute camera parameters
++    perspective(projection,
++      scene.fovy,
++      width/height,
++      scene.zNear,
++      scene.zFar)
+ 
+-  this.pickId = 1
+-  this.clipBounds = [[-Infinity, -Infinity, -Infinity], [Infinity, Infinity, Infinity]]
++    //Compute model matrix
++    for(var i=0; i<16; ++i) {
++      model[i] = 0
++    }
++    model[15] = 1
+ 
+-  this.snapToData = false
++    var maxS = 0
++    for(var i=0; i<3; ++i) {
++      maxS = Math.max(maxS, bounds[1][i] - bounds[0][i])
++    }
+ 
+-  this.opacity = 1.0
++    for(var i=0; i<3; ++i) {
++      if(scene.autoScale) {
++        model[5*i] = scene.aspect[i] / (bounds[1][i] - bounds[0][i])
++      } else {
++        model[5*i] = 1  / maxS
++      }
++      if(scene.autoCenter) {
++        model[12+i] = -model[5*i] * 0.5 * (bounds[0][i] + bounds[1][i])
++      }
++    }
+ 
+-  this.lightPosition = [10, 10000, 0]
+-  this.ambientLight = 0.8
+-  this.diffuseLight = 0.8
+-  this.specularLight = 2.0
+-  this.roughness = 0.5
+-  this.fresnel = 1.5
++    //Apply axes/clip bounds
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
+ 
+-  this.dirty = true
+-}
++      //Set axes bounds
++      obj.axesBounds = bounds
+ 
+-var proto = SurfacePlot.prototype
++      //Set clip bounds
++      if(scene.clipToBounds) {
++        obj.clipBounds = bounds
++      }
++    }
+ 
+-proto.isTransparent = function () {
+-  return this.opacity < 1
+-}
++    //Set spike parameters
++    if(selection.object) {
++      if(scene.snapToData) {
++        spikes.position = selection.dataCoordinate
++      } else {
++        spikes.position = selection.dataPosition
++      }
++      spikes.bounds = bounds
++    }
+ 
+-proto.isOpaque = function () {
+-  if (this.opacity >= 1) {
+-    return true
+-  }
+-  for (var i = 0; i < 3; ++i) {
+-    if (this._contourCounts[i].length > 0 || this._dynamicCounts[i] > 0) {
+-      return true
++    //If state changed, then redraw pick buffers
++    if(pickDirty) {
++      pickDirty = false
++      renderPick()
+     }
+-  }
+-  return false
+-}
+ 
+-proto.pickSlots = 1
++    if(!dirty) {
++      return
++    }
+ 
+-proto.setPickBase = function (id) {
+-  this.pickId = id
+-}
++    //Recalculate pixel data
++    scene.axesPixels = axesRanges(scene.axes, cameraParams, width, height)
+ 
+-var ZERO_VEC = [0, 0, 0]
++    //Call render callback
++    if(scene.onrender) {
++      scene.onrender()
++    }
+ 
+-var PROJECT_DATA = {
+-  showSurface: false,
+-  showContour: false,
+-  projections: [IDENTITY.slice(), IDENTITY.slice(), IDENTITY.slice()],
+-  clipBounds: [
+-    [[0, 0, 0], [0, 0, 0]],
+-    [[0, 0, 0], [0, 0, 0]],
+-    [[0, 0, 0], [0, 0, 0]]]
+-}
++    //Read value
++    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++    gl.viewport(0, 0, width, height)
+ 
+-function computeProjectionData (camera, obj) {
+-  var i, j, k
++    //General strategy: 3 steps
++    //  1. render non-transparent objects
++    //  2. accumulate transparent objects into separate fbo
++    //  3. composite final scene
++
++    //Clear FBO
++    var clearColor = scene.clearColor
++    gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3])
++    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
++    gl.depthMask(true)
++    gl.colorMask(true, true, true, true)
++    gl.enable(gl.DEPTH_TEST)
++    gl.depthFunc(gl.LEQUAL)
++    gl.disable(gl.BLEND)
++    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
+ 
+-  // Compute cube properties
+-  var cubeAxis = (obj.axes && obj.axes.lastCubeProps.axis) || ZERO_VEC
++    //Render opaque pass
++    var hasTransparent = false
++    if(axes.enable) {
++      hasTransparent = hasTransparent || axes.isTransparent()
++      axes.draw(cameraParams)
++    }
++    spikes.axes = axes
++    if(selection.object) {
++      spikes.draw(cameraParams)
++    }
+ 
+-  var showSurface = obj.showSurface
+-  var showContour = obj.showContour
++    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
+ 
+-  for (i = 0; i < 3; ++i) {
+-    showSurface = showSurface || obj.surfaceProject[i]
+-    for (j = 0; j < 3; ++j) {
+-      showContour = showContour || obj.contourProject[i][j]
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
++      obj.axes = axes
++      obj.pixelRatio = scene.pixelRatio
++      if(obj.isOpaque && obj.isOpaque()) {
++        obj.draw(cameraParams)
++      }
++      if(obj.isTransparent && obj.isTransparent()) {
++        hasTransparent = true
++      }
+     }
+-  }
+ 
+-  for (i = 0; i < 3; ++i) {
+-    // Construct projection onto axis
+-    var axisSquish = PROJECT_DATA.projections[i]
+-    for (j = 0; j < 16; ++j) {
+-      axisSquish[j] = 0
+-    }
+-    for (j = 0; j < 4; ++j) {
+-      axisSquish[5 * j] = 1
+-    }
+-    axisSquish[5 * i] = 0
+-    axisSquish[12 + i] = obj.axesBounds[+(cubeAxis[i] > 0)][i]
+-    multiply(axisSquish, camera.model, axisSquish)
++    if(hasTransparent) {
++      //Render transparent pass
++      accumBuffer.shape = viewShape
++      accumBuffer.bind()
++      gl.clear(gl.DEPTH_BUFFER_BIT)
++      gl.colorMask(false, false, false, false)
++      gl.depthMask(true)
++      gl.depthFunc(gl.LESS)
+ 
+-    var nclipBounds = PROJECT_DATA.clipBounds[i]
+-    for (k = 0; k < 2; ++k) {
+-      for (j = 0; j < 3; ++j) {
+-        nclipBounds[k][j] = camera.clipBounds[k][j]
++      //Render forward facing objects
++      if(axes.enable && axes.isTransparent()) {
++        axes.drawTransparent(cameraParams)
++      }
++      for(var i=0; i<numObjs; ++i) {
++        var obj = objects[i]
++        if(obj.isOpaque && obj.isOpaque()) {
++          obj.draw(cameraParams)
++        }
+       }
+-    }
+-    nclipBounds[0][i] = -1e8
+-    nclipBounds[1][i] = 1e8
+-  }
+ 
+-  PROJECT_DATA.showSurface = showSurface
+-  PROJECT_DATA.showContour = showContour
++      //Render transparent pass
++      gl.enable(gl.BLEND)
++      gl.blendEquation(gl.FUNC_ADD)
++      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
++      gl.colorMask(true, true, true, true)
++      gl.depthMask(false)
++      gl.clearColor(0,0,0,0)
++      gl.clear(gl.COLOR_BUFFER_BIT)
+ 
+-  return PROJECT_DATA
+-}
++      if(axes.isTransparent()) {
++        axes.drawTransparent(cameraParams)
++      }
+ 
+-var UNIFORMS = {
+-  model: IDENTITY,
+-  view: IDENTITY,
+-  projection: IDENTITY,
+-  inverseModel: IDENTITY.slice(),
+-  lowerBound: [0, 0, 0],
+-  upperBound: [0, 0, 0],
+-  colorMap: 0,
+-  clipBounds: [[0, 0, 0], [0, 0, 0]],
+-  height: 0.0,
+-  contourTint: 0,
+-  contourColor: [0, 0, 0, 1],
+-  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
+-  zOffset: -1e-4,
+-  kambient: 1,
+-  kdiffuse: 1,
+-  kspecular: 1,
+-  lightPosition: [1000, 1000, 1000],
+-  eyePosition: [0, 0, 0],
+-  roughness: 1,
+-  fresnel: 1,
+-  opacity: 1
+-}
++      for(var i=0; i<numObjs; ++i) {
++        var obj = objects[i]
++        if(obj.isTransparent && obj.isTransparent()) {
++          obj.drawTransparent(cameraParams)
++        }
++      }
+ 
+-var MATRIX_INVERSE = IDENTITY.slice()
+-var DEFAULT_PERM = [1, 0, 0, 0, 1, 0, 0, 0, 1]
++      //Unbind framebuffer
++      gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+ 
+-function drawCore (params, transparent) {
+-  params = params || {}
+-  var gl = this.gl
++      //Draw composite pass
++      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
++      gl.disable(gl.DEPTH_TEST)
++      accumShader.bind()
++      accumBuffer.color[0].bind(0)
++      accumShader.uniforms.accumBuffer = 0
++      drawTriangle(gl)
+ 
+-  gl.disable(gl.CULL_FACE)
++      //Turn off blending
++      gl.disable(gl.BLEND)
++    }
+ 
+-  this._colorMap.bind(0)
++    //Clear dirty flags
++    dirty = false
++    for(var i=0; i<numObjs; ++i) {
++      objects[i].dirty = false
++    }
++  }
+ 
+-  var uniforms = UNIFORMS
+-  uniforms.model = params.model || IDENTITY
+-  uniforms.view = params.view || IDENTITY
+-  uniforms.projection = params.projection || IDENTITY
+-  uniforms.lowerBound = [this.bounds[0][0], this.bounds[0][1], this.colorBounds[0] || this.bounds[0][2]]
+-  uniforms.upperBound = [this.bounds[1][0], this.bounds[1][1], this.colorBounds[1] || this.bounds[1][2]]
+-  uniforms.contourColor = this.contourColor[0]
+ 
+-  uniforms.inverseModel = invert(uniforms.inverseModel, uniforms.model)
++  //Draw the whole scene
++  function render() {
++    if(stopped || scene.contextLost) {
++      return
++    }
++    requestAnimationFrame(render)
++    redraw()
++  }
++  render()
+ 
+-  for (var i = 0; i < 2; ++i) {
+-    var clipClamped = uniforms.clipBounds[i]
+-    for (var j = 0; j < 3; ++j) {
+-      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
++  //Force redraw of whole scene
++  scene.redraw = function() {
++    if(stopped) {
++      return
+     }
++    dirty = true
++    redraw()
+   }
+ 
+-  uniforms.kambient = this.ambientLight
+-  uniforms.kdiffuse = this.diffuseLight
+-  uniforms.kspecular = this.specularLight
++  return scene
++}
+ 
+-  uniforms.roughness = this.roughness
+-  uniforms.fresnel = this.fresnel
+-  uniforms.opacity = this.opacity
++},{"./lib/shader":174,"3d-view-controls":21,"a-big-triangle":23,"gl-axes3d":113,"gl-axes3d/properties":120,"gl-fbo":128,"gl-mat4/perspective":145,"gl-select-static":189,"gl-spikes3d":199,"mouse-change":371}],176:[function(require,module,exports){
++module.exports = slerp
+ 
+-  uniforms.height = 0.0
+-  uniforms.permutation = DEFAULT_PERM
++/**
++ * Performs a spherical linear interpolation between two quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {quat} out
++ */
++function slerp (out, a, b, t) {
++  // benchmarks:
++  //    http://jsperf.com/quaternion-slerp-implementations
+ 
+-  // Compute camera matrix inverse
+-  var invCameraMatrix = MATRIX_INVERSE
+-  multiply(invCameraMatrix, uniforms.view, uniforms.model)
+-  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
+-  invert(invCameraMatrix, invCameraMatrix)
++  var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++    bx = b[0], by = b[1], bz = b[2], bw = b[3]
+ 
+-  for (i = 0; i < 3; ++i) {
+-    uniforms.eyePosition[i] = invCameraMatrix[12 + i] / invCameraMatrix[15]
+-  }
++  var omega, cosom, sinom, scale0, scale1
+ 
+-  var w = invCameraMatrix[15]
+-  for (i = 0; i < 3; ++i) {
+-    w += this.lightPosition[i] * invCameraMatrix[4 * i + 3]
++  // calc cosine
++  cosom = ax * bx + ay * by + az * bz + aw * bw
++  // adjust signs (if necessary)
++  if (cosom < 0.0) {
++    cosom = -cosom
++    bx = -bx
++    by = -by
++    bz = -bz
++    bw = -bw
+   }
+-  for (i = 0; i < 3; ++i) {
+-    var s = invCameraMatrix[12 + i]
+-    for (j = 0; j < 3; ++j) {
+-      s += invCameraMatrix[4 * j + i] * this.lightPosition[j]
+-    }
+-    uniforms.lightPosition[i] = s / w
++  // calculate coefficients
++  if ((1.0 - cosom) > 0.000001) {
++    // standard case (slerp)
++    omega = Math.acos(cosom)
++    sinom = Math.sin(omega)
++    scale0 = Math.sin((1.0 - t) * omega) / sinom
++    scale1 = Math.sin(t * omega) / sinom
++  } else {
++    // "from" and "to" quaternions are very close
++    //  ... so we can do a linear interpolation
++    scale0 = 1.0 - t
++    scale1 = t
+   }
++  // calculate final values
++  out[0] = scale0 * ax + scale1 * bx
++  out[1] = scale0 * ay + scale1 * by
++  out[2] = scale0 * az + scale1 * bz
++  out[3] = scale0 * aw + scale1 * bw
+ 
+-  var projectData = computeProjectionData(uniforms, this)
++  return out
++}
+ 
+-  if (projectData.showSurface && (transparent === (this.opacity < 1))) {
+-    // Set up uniforms
+-    this._shader.bind()
+-    this._shader.uniforms = uniforms
++},{}],177:[function(require,module,exports){
++'use strict'
+ 
+-    // Draw it
+-    this._vao.bind()
+ 
+-    if (this.showSurface && this._vertexCount) {
+-      this._vao.draw(gl.TRIANGLES, this._vertexCount)
+-    }
+ 
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      if (!this.surfaceProject[i] || !this.vertexCount) {
+-        continue
+-      }
+-      this._shader.uniforms.model = projectData.projections[i]
+-      this._shader.uniforms.clipBounds = projectData.clipBounds[i]
+-      this._vao.draw(gl.TRIANGLES, this._vertexCount)
+-    }
++module.exports = {
++  vertex:       "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  fragColor = color;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
++  fragment:     "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
++  pickVertex:   "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 id;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\nuniform vec4 pickOffset;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
++  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"
++}
+ 
+-    this._vao.unbind()
+-  }
++},{}],178:[function(require,module,exports){
++'use strict'
+ 
+-  if (projectData.showContour && !transparent) {
+-    var shader = this._contourShader
++module.exports = createFancyScatter2D
+ 
+-    // Don't apply lighting to contours
+-    uniforms.kambient = 1.0
+-    uniforms.kdiffuse = 0.0
+-    uniforms.kspecular = 0.0
+-    uniforms.opacity = 1.0
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var textCache = require('text-cache')
++var pool = require('typedarray-pool')
++var vectorizeText = require('vectorize-text')
++var shaders = require('./lib/shaders')
+ 
+-    shader.bind()
+-    shader.uniforms = uniforms
++var BOUNDARIES = {}
+ 
+-    // Draw contour lines
+-    var vao = this._contourVAO
+-    vao.bind()
++function getBoundary(glyph) {
++  if(glyph in BOUNDARIES) {
++    return BOUNDARIES[glyph]
++  }
+ 
+-    // Draw contour levels
+-    for (i = 0; i < 3; ++i) {
+-      shader.uniforms.permutation = PERMUTATIONS[i]
+-      gl.lineWidth(this.contourWidth[i])
++  var polys = vectorizeText(glyph, {
++    polygons: true,
++    font: 'sans-serif',
++    textAlign: 'left',
++    textBaseline: 'alphabetic'
++  })
+ 
+-      for (j = 0; j < this.contourLevels[i].length; ++j) {
+-        if (!this._contourCounts[i][j]) {
+-          continue
+-        }
+-        if (j === this.highlightLevel[i]) {
+-          shader.uniforms.contourColor = this.highlightColor[i]
+-          shader.uniforms.contourTint = this.highlightTint[i]
+-        } else if (j === 0 || (j - 1) === this.highlightLevel[i]) {
+-          shader.uniforms.contourColor = this.contourColor[i]
+-          shader.uniforms.contourTint = this.contourTint[i]
+-        }
+-        shader.uniforms.height = this.contourLevels[i][j]
+-        vao.draw(gl.LINES, this._contourCounts[i][j], this._contourOffsets[i][j])
+-      }
+-    }
++  var coords  = []
++  var normals = []
+ 
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      shader.uniforms.model = projectData.projections[i]
+-      shader.uniforms.clipBounds = projectData.clipBounds[i]
+-      for (j = 0; j < 3; ++j) {
+-        if (!this.contourProject[i][j]) {
+-          continue
+-        }
+-        shader.uniforms.permutation = PERMUTATIONS[j]
+-        gl.lineWidth(this.contourWidth[j])
+-        for (var k = 0; k < this.contourLevels[j].length; ++k) {
+-          if (k === this.highlightLevel[j]) {
+-            shader.uniforms.contourColor = this.highlightColor[j]
+-            shader.uniforms.contourTint = this.highlightTint[j]
+-          } else if (k === 0 || (k - 1) === this.highlightLevel[j]) {
+-            shader.uniforms.contourColor = this.contourColor[j]
+-            shader.uniforms.contourTint = this.contourTint[j]
+-          }
+-          shader.uniforms.height = this.contourLevels[j][k]
+-          vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
+-        }
+-      }
+-    }
++  polys.forEach(function(loops) {
++    loops.forEach(function(loop) {
++      for(var i=0; i<loop.length; ++i) {
++        var a = loop[(i + loop.length - 1) % loop.length]
++        var b = loop[i]
++        var c = loop[(i + 1) % loop.length]
++        var d = loop[(i + 2) % loop.length]
+ 
+-    // Draw dynamic contours
+-    vao = this._dynamicVAO
+-    vao.bind()
++        var dx = b[0] - a[0]
++        var dy = b[1] - a[1]
++        var dl = Math.sqrt(dx*dx + dy*dy)
++        dx /= dl
++        dy /= dl
+ 
+-    // Draw contour levels
+-    for (i = 0; i < 3; ++i) {
+-      if (this._dynamicCounts[i] === 0) {
+-        continue
+-      }
++        coords.push(a[0], a[1] + 1.4)
++        normals.push(dy, -dx)
++        coords.push(a[0], a[1] + 1.4)
++        normals.push(-dy, dx)
++        coords.push(b[0], b[1] + 1.4)
++        normals.push(-dy, dx)
+ 
+-      shader.uniforms.model = uniforms.model
+-      shader.uniforms.clipBounds = uniforms.clipBounds
+-      shader.uniforms.permutation = PERMUTATIONS[i]
+-      gl.lineWidth(this.dynamicWidth[i])
++        coords.push(b[0], b[1] + 1.4)
++        normals.push(-dy, dx)
++        coords.push(a[0], a[1] + 1.4)
++        normals.push(dy, -dx)
++        coords.push(b[0], b[1] + 1.4)
++        normals.push(dy, -dx)
+ 
+-      shader.uniforms.contourColor = this.dynamicColor[i]
+-      shader.uniforms.contourTint = this.dynamicTint[i]
+-      shader.uniforms.height = this.dynamicLevel[i]
+-      vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
++        var ex = d[0] - c[0]
++        var ey = d[1] - c[1]
++        var el = Math.sqrt(ex*ex + ey*ey)
++        ex /= el
++        ey /= el
+ 
+-      for (j = 0; j < 3; ++j) {
+-        if (!this.contourProject[j][i]) {
+-          continue
+-        }
++        coords.push(b[0], b[1]+1.4)
++        normals.push(dy, -dx)
++        coords.push(b[0], b[1]+1.4)
++        normals.push(-dy, dx)
++        coords.push(c[0], c[1]+1.4)
++        normals.push(-ey, ex)
+ 
+-        shader.uniforms.model = projectData.projections[j]
+-        shader.uniforms.clipBounds = projectData.clipBounds[j]
+-        vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
++        coords.push(c[0], c[1]+1.4)
++        normals.push(-ey, ex)
++        coords.push(b[0], b[1]+1.4)
++        normals.push(ey, -ex)
++        coords.push(c[0], c[1]+1.4)
++        normals.push(ey, -ex)
+       }
++    })
++  })
++
++  var bounds = [Infinity, Infinity, -Infinity, -Infinity]
++  for(var i=0; i<coords.length; i+=2) {
++    for(var j=0; j<2; ++j) {
++      bounds[j]   = Math.min(bounds[j],   coords[i+j])
++      bounds[2+j] = Math.max(bounds[2+j], coords[i+j])
+     }
++  }
+ 
+-    vao.unbind()
++  return BOUNDARIES[glyph] = {
++    coords:  coords,
++    normals: normals,
++    bounds:  bounds
+   }
+ }
+ 
+-proto.draw = function (params) {
+-  return drawCore.call(this, params, false)
+-}
+ 
+-proto.drawTransparent = function (params) {
+-  return drawCore.call(this, params, true)
+-}
++var VERTEX_SIZE       = 9
++var VERTEX_SIZE_BYTES = VERTEX_SIZE * 4
+ 
+-var PICK_UNIFORMS = {
+-  model: IDENTITY,
+-  view: IDENTITY,
+-  projection: IDENTITY,
+-  inverseModel: IDENTITY,
+-  clipBounds: [[0, 0, 0], [0, 0, 0]],
+-  height: 0.0,
+-  shape: [0, 0],
+-  pickId: 0,
+-  lowerBound: [0, 0, 0],
+-  upperBound: [0, 0, 0],
+-  zOffset: 0.0,
+-  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
+-  lightPosition: [0, 0, 0],
+-  eyePosition: [0, 0, 0]
++function GLScatterFancy(
++    plot,
++    shader,
++    pickShader,
++    positionBuffer,
++    offsetBuffer,
++    colorBuffer,
++    idBuffer) {
++  this.plot           = plot
++  this.shader         = shader
++  this.pickShader     = pickShader
++  this.positionBuffer = positionBuffer
++  this.offsetBuffer   = offsetBuffer
++  this.colorBuffer    = colorBuffer
++  this.idBuffer       = idBuffer
++  this.bounds         = [Infinity, Infinity, -Infinity, -Infinity]
++  this.numPoints      = 0
++  this.numVertices    = 0
++  this.pickOffset     = 0
++  this.points         = null
+ }
+ 
+-proto.drawPick = function (params) {
+-  params = params || {}
+-  var gl = this.gl
+-  gl.disable(gl.CULL_FACE)
+-
+-  var uniforms = PICK_UNIFORMS
+-  uniforms.model = params.model || IDENTITY
+-  uniforms.view = params.view || IDENTITY
+-  uniforms.projection = params.projection || IDENTITY
+-  uniforms.shape = this._field[2].shape
+-  uniforms.pickId = this.pickId / 255.0
+-  uniforms.lowerBound = this.bounds[0]
+-  uniforms.upperBound = this.bounds[1]
+-  uniforms.permutation = DEFAULT_PERM
++var proto = GLScatterFancy.prototype
+ 
+-  for (var i = 0; i < 2; ++i) {
+-    var clipClamped = uniforms.clipBounds[i]
+-    for (var j = 0; j < 3; ++j) {
+-      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
+-    }
+-  }
++;(function() {
++  var MATRIX = [
++    1, 0, 0,
++    0, 1, 0,
++    0, 0, 1
++  ];
+ 
+-  var projectData = computeProjectionData(uniforms, this)
++  var PIXEL_SCALE = [1, 1]
+ 
+-  if (projectData.showSurface) {
+-    // Set up uniforms
+-    this._pickShader.bind()
+-    this._pickShader.uniforms = uniforms
++  function calcScales() {
++    var plot          = this.plot
++    var bounds        = this.bounds
+ 
+-    // Draw it
+-    this._vao.bind()
+-    this._vao.draw(gl.TRIANGLES, this._vertexCount)
++    var viewBox     = plot.viewBox
++    var dataBox     = plot.dataBox
++    var pixelRatio  = plot.pixelRatio
+ 
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      if (!this.surfaceProject[i]) {
+-        continue
+-      }
+-      this._pickShader.uniforms.model = projectData.projections[i]
+-      this._pickShader.uniforms.clipBounds = projectData.clipBounds[i]
+-      this._vao.draw(gl.TRIANGLES, this._vertexCount)
+-    }
++    var boundX  = bounds[2] - bounds[0]
++    var boundY  = bounds[3] - bounds[1]
++    var dataX   = dataBox[2] - dataBox[0]
++    var dataY   = dataBox[3] - dataBox[1]
+ 
+-    this._vao.unbind()
+-  }
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-  if (projectData.showContour) {
+-    var shader = this._contourPickShader
++    var screenX = (viewBox[2] - viewBox[0])
++    var screenY = (viewBox[3] - viewBox[1])
+ 
+-    shader.bind()
+-    shader.uniforms = uniforms
++    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
++    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
++  }
+ 
+-    var vao = this._contourVAO
+-    vao.bind()
++  proto.draw = function() {
++    var plot          = this.plot
++    var shader        = this.shader
++    var numVertices   = this.numVertices
+ 
+-    for (j = 0; j < 3; ++j) {
+-      gl.lineWidth(this.contourWidth[j])
+-      shader.uniforms.permutation = PERMUTATIONS[j]
+-      for (i = 0; i < this.contourLevels[j].length; ++i) {
+-        if (this._contourCounts[j][i]) {
+-          shader.uniforms.height = this.contourLevels[j][i]
+-          vao.draw(gl.LINES, this._contourCounts[j][i], this._contourOffsets[j][i])
+-        }
+-      }
++    if(!numVertices) {
++      return
+     }
+ 
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      shader.uniforms.model = projectData.projections[i]
+-      shader.uniforms.clipBounds = projectData.clipBounds[i]
+-
+-      for (j = 0; j < 3; ++j) {
+-        if (!this.contourProject[i][j]) {
+-          continue
+-        }
++    var gl          = plot.gl
+ 
+-        shader.uniforms.permutation = PERMUTATIONS[j]
+-        gl.lineWidth(this.contourWidth[j])
+-        for (var k = 0; k < this.contourLevels[j].length; ++k) {
+-          if (this._contourCounts[j][k]) {
+-            shader.uniforms.height = this.contourLevels[j][k]
+-            vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
+-          }
+-        }
+-      }
+-    }
++    calcScales.call(this)
+ 
+-    vao.unbind()
+-  }
+-}
++    shader.bind()
+ 
+-proto.pick = function (selection) {
+-  if (!selection) {
+-    return null
+-  }
++    shader.uniforms.pixelScale = PIXEL_SCALE
++    shader.uniforms.viewTransform = MATRIX
+ 
+-  if (selection.id !== this.pickId) {
+-    return null
+-  }
++    this.positionBuffer.bind()
++    shader.attributes.position.pointer()
+ 
+-  var shape = this._field[2].shape
++    this.offsetBuffer.bind()
++    shader.attributes.offset.pointer()
+ 
+-  var result = this._pickResult
++    this.colorBuffer.bind()
++    shader.attributes.color.pointer(gl.UNSIGNED_BYTE, true)
+ 
+-  // Compute uv coordinate
+-  var x = shape[0] * (selection.value[0] + (selection.value[2] >> 4) / 16.0) / 255.0
+-  var ix = Math.floor(x)
+-  var fx = x - ix
++    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
++  }
+ 
+-  var y = shape[1] * (selection.value[1] + (selection.value[2] & 15) / 16.0) / 255.0
+-  var iy = Math.floor(y)
+-  var fy = y - iy
++  var PICK_OFFSET = [0,0,0,0]
+ 
+-  ix += 1
+-  iy += 1
++  proto.drawPick = function(offset) {
++    var plot          = this.plot
++    var shader        = this.pickShader
++    var numVertices   = this.numVertices
+ 
+-  // Compute xyz coordinate
+-  var pos = result.position
+-  pos[0] = pos[1] = pos[2] = 0
+-  for (var dx = 0; dx < 2; ++dx) {
+-    var s = dx ? fx : 1.0 - fx
+-    for (var dy = 0; dy < 2; ++dy) {
+-      var t = dy ? fy : 1.0 - fy
++    var gl          = plot.gl
+ 
+-      var r = ix + dx
+-      var c = iy + dy
+-      var w = s * t
++    this.pickOffset = offset
+ 
+-      for (var i = 0; i < 3; ++i) {
+-        pos[i] += this._field[i].get(r, c) * w
+-      }
++    if(!numVertices) {
++      return offset
+     }
+-  }
+ 
+-  // Find closest level
+-  var levelIndex = this._pickResult.level
+-  for (var j = 0; j < 3; ++j) {
+-    levelIndex[j] = bsearch.le(this.contourLevels[j], pos[j])
+-    if (levelIndex[j] < 0) {
+-      if (this.contourLevels[j].length > 0) {
+-        levelIndex[j] = 0
+-      }
+-    } else if (levelIndex[j] < this.contourLevels[j].length - 1) {
+-      var a = this.contourLevels[j][levelIndex[j]]
+-      var b = this.contourLevels[j][levelIndex[j] + 1]
+-      if (Math.abs(a - pos[j]) > Math.abs(b - pos[j])) {
+-        levelIndex[j] += 1
+-      }
++    for(var i=0; i<4; ++i) {
++      PICK_OFFSET[i] = ((offset>>(i*8)) & 0xff)
+     }
+-  }
+ 
+-  result.index[0] = fx < 0.5 ? ix : (ix + 1)
+-  result.index[1] = fy < 0.5 ? iy : (iy + 1)
++    calcScales.call(this)
+ 
+-  result.uv[0] = x / shape[0]
+-  result.uv[1] = y / shape[1]
++    shader.bind()
+ 
+-  for (i = 0; i < 3; ++i) {
+-    result.dataCoordinate[i] = this._field[i].get(result.index[0], result.index[1])
+-  }
++    shader.uniforms.pixelScale    = PIXEL_SCALE
++    shader.uniforms.viewTransform = MATRIX
++    shader.uniforms.pickOffset    = PICK_OFFSET
+ 
+-  return result
+-}
++    this.positionBuffer.bind()
++    shader.attributes.position.pointer()
+ 
+-function padField (nfield, field) {
+-  var shape = field.shape.slice()
+-  var nshape = nfield.shape.slice()
++    this.offsetBuffer.bind()
++    shader.attributes.offset.pointer()
+ 
+-  // Center
+-  ops.assign(nfield.lo(1, 1).hi(shape[0], shape[1]), field)
++    this.idBuffer.bind()
++    shader.attributes.id.pointer(gl.UNSIGNED_BYTE, false)
+ 
+-  // Edges
+-  ops.assign(nfield.lo(1).hi(shape[0], 1),
+-    field.hi(shape[0], 1))
+-  ops.assign(nfield.lo(1, nshape[1] - 1).hi(shape[0], 1),
+-    field.lo(0, shape[1] - 1).hi(shape[0], 1))
+-  ops.assign(nfield.lo(0, 1).hi(1, shape[1]),
+-    field.hi(1))
+-  ops.assign(nfield.lo(nshape[0] - 1, 1).hi(1, shape[1]),
+-    field.lo(shape[0] - 1))
+-  // Corners
+-  nfield.set(0, 0, field.get(0, 0))
+-  nfield.set(0, nshape[1] - 1, field.get(0, shape[1] - 1))
+-  nfield.set(nshape[0] - 1, 0, field.get(shape[0] - 1, 0))
+-  nfield.set(nshape[0] - 1, nshape[1] - 1, field.get(shape[0] - 1, shape[1] - 1))
+-}
++    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
+ 
+-function handleArray (param, ctor) {
+-  if (Array.isArray(param)) {
+-    return [ ctor(param[0]), ctor(param[1]), ctor(param[2]) ]
++    return offset + this.numPoints
+   }
+-  return [ ctor(param), ctor(param), ctor(param) ]
+-}
++})()
+ 
+-function toColor (x) {
+-  if (Array.isArray(x)) {
+-    if (x.length === 3) {
+-      return [x[0], x[1], x[2], 1]
+-    }
+-    return [x[0], x[1], x[2], x[3]]
++proto.pick = function(x, y, value) {
++  var pickOffset = this.pickOffset
++  var pointCount = this.numPoints
++  if(value < pickOffset || value >= pickOffset + pointCount) {
++    return null
+   }
+-  return [0, 0, 0, 1]
+-}
+-
+-function handleColor (param) {
+-  if (Array.isArray(param)) {
+-    if (Array.isArray(param)) {
+-      return [
+-        toColor(param[0]),
+-        toColor(param[1]),
+-        toColor(param[2]) ]
+-    } else {
+-      var c = toColor(param)
+-      return [
+-        c.slice(),
+-        c.slice(),
+-        c.slice() ]
+-    }
++  var pointId = value - pickOffset
++  var points   = this.points
++  return {
++    object:     this,
++    pointId:    pointId,
++    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+   }
+ }
+ 
+-proto.update = function (params) {
+-  params = params || {}
+-
+-  this.dirty = true
++proto.update = function(options) {
++  options = options || {}
+ 
+-  if ('contourWidth' in params) {
+-    this.contourWidth = handleArray(params.contourWidth, Number)
+-  }
+-  if ('showContour' in params) {
+-    this.showContour = handleArray(params.showContour, Boolean)
+-  }
+-  if ('showSurface' in params) {
+-    this.showSurface = !!params.showSurface
+-  }
+-  if ('contourTint' in params) {
+-    this.contourTint = handleArray(params.contourTint, Boolean)
+-  }
+-  if ('contourColor' in params) {
+-    this.contourColor = handleColor(params.contourColor)
+-  }
+-  if ('contourProject' in params) {
+-    this.contourProject = handleArray(params.contourProject, function (x) {
+-      return handleArray(x, Boolean)
+-    })
+-  }
+-  if ('surfaceProject' in params) {
+-    this.surfaceProject = params.surfaceProject
+-  }
+-  if ('dynamicColor' in params) {
+-    this.dynamicColor = handleColor(params.dynamicColor)
+-  }
+-  if ('dynamicTint' in params) {
+-    this.dynamicTint = handleArray(params.dynamicTint, Number)
+-  }
+-  if ('dynamicWidth' in params) {
+-    this.dynamicWidth = handleArray(params.dynamicWidth, Number)
+-  }
+-  if ('opacity' in params) {
+-    this.opacity = params.opacity
+-  }
+-  if ('colorBounds' in params) {
+-    this.colorBounds = params.colorBounds
+-  }
++  var positions     = options.positions    || []
++  var colors        = options.colors       || []
++  var glyphs        = options.glyphs       || []
++  var sizes         = options.sizes        || []
++  var borderWidths  = options.borderWidths || []
++  var borderColors  = options.borderColors || []
+ 
+-  var field = params.field || (params.coords && params.coords[2]) || null
+-  var levelsChanged = false
++  this.points = positions
+ 
+-  if (!field) {
+-    if (this._field[2].shape[0] || this._field[2].shape[2]) {
+-      field = this._field[2].lo(1, 1).hi(this._field[2].shape[0] - 2, this._field[2].shape[1] - 2)
+-    } else {
+-      field = this._field[2].hi(0, 0)
++  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
++  var numVertices = 0
++  for(var i=0; i<glyphs.length; ++i) {
++    numVertices += (
++      textCache('sans-serif', glyphs[i]).data.length +
++      getBoundary(glyphs[i]).coords.length
++    )>> 1
++    for(var j=0; j<2; ++j) {
++      bounds[j]   = Math.min(bounds[j],   positions[2*i+j])
++      bounds[2+j] = Math.max(bounds[2+j], positions[2*i+j])
+     }
+   }
+ 
+-  // Update field
+-  if ('field' in params || 'coords' in params) {
+-    var fsize = (field.shape[0] + 2) * (field.shape[1] + 2)
++  if(bounds[0] === bounds[2]) {
++    bounds[2] += 1
++  }
++  if(bounds[3] === bounds[1]) {
++    bounds[3] += 1
++  }
+ 
+-    // Resize if necessary
+-    if (fsize > this._field[2].data.length) {
+-      pool.freeFloat(this._field[2].data)
+-      this._field[2].data = pool.mallocFloat(bits.nextPow2(fsize))
+-    }
++  var sx = 1/(bounds[2] - bounds[0])
++  var sy = 1/(bounds[3] - bounds[1])
++  var tx = bounds[0]
++  var ty = bounds[1]
+ 
+-    // Pad field
+-    this._field[2] = ndarray(this._field[2].data, [field.shape[0] + 2, field.shape[1] + 2])
+-    padField(this._field[2], field)
++  var v_position = pool.mallocFloat32(2 * numVertices)
++  var v_offset   = pool.mallocFloat32(2 * numVertices)
++  var v_color    = pool.mallocUint8(4 * numVertices)
++  var v_ids      = pool.mallocUint32(numVertices)
++  var ptr = 0
+ 
+-    // Save shape of field
+-    this.shape = field.shape.slice()
+-    var shape = this.shape
++  for(var i=0; i<glyphs.length; ++i) {
++    var glyph = textCache('sans-serif', glyphs[i])
++    var border = getBoundary(glyphs[i])
++    var x = sx * (positions[2*i]   - tx)
++    var y = sy * (positions[2*i+1] - ty)
++    var s = sizes[i]
++    var r = colors[4*i]   * 255.0
++    var g = colors[4*i+1] * 255.0
++    var b = colors[4*i+2] * 255.0
++    var a = colors[4*i+3] * 255.0
+ 
+-    // Resize coordinate fields if necessary
+-    for (var i = 0; i < 2; ++i) {
+-      if (this._field[2].size > this._field[i].data.length) {
+-        pool.freeFloat(this._field[i].data)
+-        this._field[i].data = pool.mallocFloat(this._field[2].size)
+-      }
+-      this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2])
+-    }
++    var gx = 0.5*(border.bounds[0] + border.bounds[2])
++    var gy = 0.5*(border.bounds[1] + border.bounds[3])
+ 
+-    // Generate x/y coordinates
+-    if (params.coords) {
+-      var coords = params.coords
+-      if (!Array.isArray(coords) || coords.length !== 3) {
+-        throw new Error('gl-surface: invalid coordinates for x/y')
+-      }
+-      for (i = 0; i < 2; ++i) {
+-        var coord = coords[i]
+-        for (j = 0; j < 2; ++j) {
+-          if (coord.shape[j] !== shape[j]) {
+-            throw new Error('gl-surface: coords have incorrect shape')
+-          }
+-        }
+-        padField(this._field[i], coord)
+-      }
+-    } else if (params.ticks) {
+-      var ticks = params.ticks
+-      if (!Array.isArray(ticks) || ticks.length !== 2) {
+-        throw new Error('gl-surface: invalid ticks')
+-      }
+-      for (i = 0; i < 2; ++i) {
+-        var tick = ticks[i]
+-        if (Array.isArray(tick) || tick.length) {
+-          tick = ndarray(tick)
+-        }
+-        if (tick.shape[0] !== shape[i]) {
+-          throw new Error('gl-surface: invalid tick length')
+-        }
+-        // Make a copy view of the tick array
+-        var tick2 = ndarray(tick.data, shape)
+-        tick2.stride[i] = tick.stride[0]
+-        tick2.stride[i ^ 1] = 0
++    for(var j=0; j<glyph.data.length; j+=2) {
++      v_position[2*ptr]   = x
++      v_position[2*ptr+1] = y
++      v_offset[2*ptr]     = -s * (glyph.data[j]   - gx)
++      v_offset[2*ptr+1]   = -s * (glyph.data[j+1] - gy)
++      v_color[4*ptr]      = r
++      v_color[4*ptr+1]    = g
++      v_color[4*ptr+2]    = b
++      v_color[4*ptr+3]    = a
++      v_ids[ptr]          = i
+ 
+-        // Fill in field array
+-        padField(this._field[i], tick2)
+-      }
+-    } else {
+-      for (i = 0; i < 2; ++i) {
+-        var offset = [0, 0]
+-        offset[i] = 1
+-        this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2], offset, 0)
+-      }
+-      this._field[0].set(0, 0, 0)
+-      for (var j = 0; j < shape[0]; ++j) {
+-        this._field[0].set(j + 1, 0, j)
+-      }
+-      this._field[0].set(shape[0] + 1, 0, shape[0] - 1)
+-      this._field[1].set(0, 0, 0)
+-      for (j = 0; j < shape[1]; ++j) {
+-        this._field[1].set(0, j + 1, j)
+-      }
+-      this._field[1].set(0, shape[1] + 1, shape[1] - 1)
++      ptr += 1
+     }
+ 
+-    // Save shape
+-    var fields = this._field
++    var w = borderWidths[i]
++    r = borderColors[4*i]   * 255.0
++    g = borderColors[4*i+1] * 255.0
++    b = borderColors[4*i+2] * 255.0
++    a = borderColors[4*i+3] * 255.0
+ 
+-    // Compute surface normals
+-    var dfields = ndarray(pool.mallocFloat(fields[2].size * 3 * 2), [3, shape[0] + 2, shape[1] + 2, 2])
+-    for (i = 0; i < 3; ++i) {
+-      gradient(dfields.pick(i), fields[i], 'mirror')
++    for(var j=0; j<border.coords.length; j+=2) {
++      v_position[2*ptr]   = x
++      v_position[2*ptr+1] = y
++      v_offset[2*ptr]     = -(s*(border.coords[j]  -gx)+w*border.normals[j])
++      v_offset[2*ptr+1]   = -(s*(border.coords[j+1]-gy)+w*border.normals[j+1])
++      v_color[4*ptr]      = r
++      v_color[4*ptr+1]    = g
++      v_color[4*ptr+2]    = b
++      v_color[4*ptr+3]    = a
++      v_ids[ptr]          = i
++
++      ptr += 1
+     }
+-    var normals = ndarray(pool.mallocFloat(fields[2].size * 3), [shape[0] + 2, shape[1] + 2, 3])
+-    for (i = 0; i < shape[0] + 2; ++i) {
+-      for (j = 0; j < shape[1] + 2; ++j) {
+-        var dxdu = dfields.get(0, i, j, 0)
+-        var dxdv = dfields.get(0, i, j, 1)
+-        var dydu = dfields.get(1, i, j, 0)
+-        var dydv = dfields.get(1, i, j, 1)
+-        var dzdu = dfields.get(2, i, j, 0)
+-        var dzdv = dfields.get(2, i, j, 1)
++  }
+ 
+-        var nx = dydu * dzdv - dydv * dzdu
+-        var ny = dzdu * dxdv - dzdv * dxdu
+-        var nz = dxdu * dydv - dxdv * dydu
++  this.numPoints = glyphs.length
++  this.numVertices = numVertices
+ 
+-        var nl = Math.sqrt(nx * nx + ny * ny + nz * nz)
+-        if (nl < 1e-8) {
+-          nl = Math.max(Math.abs(nx), Math.abs(ny), Math.abs(nz))
+-          if (nl < 1e-8) {
+-            nz = 1.0
+-            ny = nx = 0.0
+-            nl = 1.0
+-          } else {
+-            nl = 1.0 / nl
+-          }
+-        } else {
+-          nl = 1.0 / Math.sqrt(nl)
+-        }
++  this.positionBuffer.update(v_position)
++  this.offsetBuffer.update(v_offset)
++  this.colorBuffer.update(v_color)
++  this.idBuffer.update(v_ids)
+ 
+-        normals.set(i, j, 0, nx * nl)
+-        normals.set(i, j, 1, ny * nl)
+-        normals.set(i, j, 2, nz * nl)
+-      }
+-    }
+-    pool.free(dfields.data)
++  pool.free(v_position)
++  pool.free(v_offset)
++  pool.free(v_color)
++  pool.free(v_ids)
++}
+ 
+-    // Initialize surface
+-    var lo = [ Infinity, Infinity, Infinity ]
+-    var hi = [ -Infinity, -Infinity, -Infinity ]
+-    var lo_intensity = Infinity
+-    var hi_intensity = -Infinity
+-    var count = (shape[0] - 1) * (shape[1] - 1) * 6
+-    var tverts = pool.mallocFloat(bits.nextPow2(10 * count))
+-    var tptr = 0
+-    var vertexCount = 0
+-    for (i = 0; i < shape[0] - 1; ++i) {
+-      j_loop:
+-      for (j = 0; j < shape[1] - 1; ++j) {
+-        // Test for NaNs
+-        for (var dx = 0; dx < 2; ++dx) {
+-          for (var dy = 0; dy < 2; ++dy) {
+-            for (var k = 0; k < 3; ++k) {
+-              var f = this._field[k].get(1 + i + dx, 1 + j + dy)
+-              if (isNaN(f) || !isFinite(f)) {
+-                continue j_loop
+-              }
+-            }
+-          }
+-        }
+-        for (k = 0; k < 6; ++k) {
+-          var r = i + QUAD[k][0]
+-          var c = j + QUAD[k][1]
++proto.dispose = function() {
++  this.shader.dispose()
++  this.pickShader.dispose()
++  this.positionBuffer.dispose()
++  this.offsetBuffer.dispose()
++  this.colorBuffer.dispose()
++  this.idBuffer.dispose()
++  this.plot.removeObject(this)
++}
+ 
+-          var tx = this._field[0].get(r + 1, c + 1)
+-          var ty = this._field[1].get(r + 1, c + 1)
+-          f = this._field[2].get(r + 1, c + 1)
+-          var vf = f
+-          nx = normals.get(r + 1, c + 1, 0)
+-          ny = normals.get(r + 1, c + 1, 1)
+-          nz = normals.get(r + 1, c + 1, 2)
++function createFancyScatter2D(plot, options) {
++  var gl = plot.gl
+ 
+-          if (params.intensity) {
+-            vf = params.intensity.get(r, c)
+-          }
++  var shader      = createShader(gl, shaders.vertex,     shaders.fragment)
++  var pickShader  = createShader(gl, shaders.pickVertex, shaders.pickFragment)
+ 
+-          tverts[tptr++] = r
+-          tverts[tptr++] = c
+-          tverts[tptr++] = tx
+-          tverts[tptr++] = ty
+-          tverts[tptr++] = f
+-          tverts[tptr++] = 0
+-          tverts[tptr++] = vf
+-          tverts[tptr++] = nx
+-          tverts[tptr++] = ny
+-          tverts[tptr++] = nz
++  var positionBuffer  = createBuffer(gl)
++  var offsetBuffer    = createBuffer(gl)
++  var colorBuffer     = createBuffer(gl)
++  var idBuffer        = createBuffer(gl)
+ 
+-          lo[0] = Math.min(lo[0], tx)
+-          lo[1] = Math.min(lo[1], ty)
+-          lo[2] = Math.min(lo[2], f)
+-          lo_intensity = Math.min(lo_intensity, vf)
++  var scatter = new GLScatterFancy(
++    plot,
++    shader,
++    pickShader,
++    positionBuffer,
++    offsetBuffer,
++    colorBuffer,
++    idBuffer)
+ 
+-          hi[0] = Math.max(hi[0], tx)
+-          hi[1] = Math.max(hi[1], ty)
+-          hi[2] = Math.max(hi[2], f)
+-          hi_intensity = Math.max(hi_intensity, vf)
++  scatter.update(options)
+ 
+-          vertexCount += 1
+-        }
+-      }
+-    }
++  plot.addObject(scatter)
+ 
+-    if (params.intensityBounds) {
+-      lo_intensity = +params.intensityBounds[0]
+-      hi_intensity = +params.intensityBounds[1]
+-    }
++  return scatter
++}
+ 
+-    // Scale all vertex intensities
+-    for (i = 6; i < tptr; i += 10) {
+-      tverts[i] = (tverts[i] - lo_intensity) / (hi_intensity - lo_intensity)
+-    }
++},{"./lib/shaders":177,"gl-buffer":121,"gl-shader":190,"text-cache":441,"typedarray-pool":449,"vectorize-text":460}],179:[function(require,module,exports){
+ 
+-    this._vertexCount = vertexCount
+-    this._coordinateBuffer.update(tverts.subarray(0, tptr))
+-    pool.freeFloat(tverts)
+-    pool.free(normals.data)
+ 
+-    // Update bounds
+-    this.bounds = [lo, hi]
++exports.pointVertex       = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute float weight;\n\nuniform mat3 matrix;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}\n"
++exports.pointFragment     = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}\n"
++exports.pickVertex        = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n"
++exports.pickFragment      = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"
+ 
+-    // Save intensity
+-    this.intensity = params.intensity || this._field[2]
++},{}],180:[function(require,module,exports){
++arguments[4][67][0].apply(exports,arguments)
++},{"dup":67}],181:[function(require,module,exports){
++'use strict'
+ 
+-    if(this.intensityBounds[0] !== lo_intensity || this.intensityBounds[1] !== hi_intensity) {
+-        levelsChanged = true
+-    }
++module.exports = sortLevels
+ 
+-    // Save intensity bound
+-    this.intensityBounds = [lo_intensity, hi_intensity]
++var INSERT_SORT_CUTOFF = 32
++
++function sortLevels(data_levels, data_points, data_ids, data_weights, n0) {
++  if (n0 <= 4*INSERT_SORT_CUTOFF) {
++    insertionSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
+   }
++}
+ 
+-  // Update level crossings
+-  if ('levels' in params) {
+-    var levels = params.levels
+-    if (!Array.isArray(levels[0])) {
+-      levels = [ [], [], levels ]
+-    } else {
+-      levels = levels.slice()
+-    }
+-    for (i = 0; i < 3; ++i) {
+-      levels[i] = levels[i].slice()
+-      levels.sort(function (a, b) {
+-        return a - b
+-      })
+-    }
+-    change_test:
+-    for (i = 0; i < 3; ++i) {
+-      if (levels[i].length !== this.contourLevels[i].length) {
+-        levelsChanged = true
++function insertionSort(left, right, data_levels, data_points, data_ids, data_weights) {
++  for(var i=left+1; i<=right; ++i) {
++    var a_level  = data_levels[i]
++    var a_x      = data_points[2*i]
++    var a_y      = data_points[2*i+1]
++    var a_id     = data_ids[i]
++    var a_weight = data_weights[i]
++
++    var j = i
++    while(j > left) {
++      var b_level = data_levels[j-1]
++      var b_x     = data_points[2*(j-1)]
++      if(((b_level - a_level) || (a_x - b_x)) >= 0) {
+         break
+       }
+-      for (j = 0; j < levels[i].length; ++j) {
+-        if (levels[i][j] !== this.contourLevels[i][j]) {
+-          levelsChanged = true
+-          break change_test
+-        }
+-      }
++      data_levels[j]      = b_level
++      data_points[2*j]    = b_x
++      data_points[2*j+1]  = data_points[2*j-1]
++      data_ids[j]         = data_ids[j-1]
++      data_weights[j]     = data_weights[j-1]
++      j -= 1
+     }
+-    this.contourLevels = levels
++
++    data_levels[j]     = a_level
++    data_points[2*j]   = a_x
++    data_points[2*j+1] = a_y
++    data_ids[j]        = a_id
++    data_weights[j]    = a_weight
+   }
++}
+ 
+-  if (levelsChanged) {
+-    fields = this._field
+-    shape = this.shape
++function swap(i, j, data_levels, data_points, data_ids, data_weights) {
++  var a_level = data_levels[i]
++  var a_x     = data_points[2*i]
++  var a_y     = data_points[2*i+1]
++  var a_id    = data_ids[i]
++  var a_weight = data_weights[i]
+ 
+-    // Update contour lines
+-    var contourVerts = []
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
+ 
+-    for (var dim = 0; dim < 3; ++dim) {
+-      levels = this.contourLevels[dim]
+-      var levelOffsets = []
+-      var levelCounts = []
++  data_levels[j]     = a_level
++  data_points[2*j]   = a_x
++  data_points[2*j+1] = a_y
++  data_ids[j]        = a_id
++  data_weights[j]    = a_weight
++}
+ 
+-      var parts = [0, 0, 0]
++function move(i, j, data_levels, data_points, data_ids, data_weights) {
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
++}
+ 
+-      for (i = 0; i < levels.length; ++i) {
+-        var graph = surfaceNets(this._field[dim], levels[i])
+-        levelOffsets.push((contourVerts.length / 5) | 0)
+-        vertexCount = 0
++function rotate(i, j, k, data_levels, data_points, data_ids, data_weights) {
++  var a_level = data_levels[i]
++  var a_x     = data_points[2*i]
++  var a_y     = data_points[2*i+1]
++  var a_id    = data_ids[i]
++  var a_weight = data_weights[i]
+ 
+-        edge_loop:
+-        for (j = 0; j < graph.cells.length; ++j) {
+-          var e = graph.cells[j]
+-          for (k = 0; k < 2; ++k) {
+-            var p = graph.positions[e[k]]
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
+ 
+-            var x = p[0]
+-            var ix = Math.floor(x) | 0
+-            var fx = x - ix
++  data_levels[j]     = data_levels[k]
++  data_points[2*j]   = data_points[2*k]
++  data_points[2*j+1] = data_points[2*k+1]
++  data_ids[j]        = data_ids[k]
++  data_weights[j]    = data_weights[k]
+ 
+-            var y = p[1]
+-            var iy = Math.floor(y) | 0
+-            var fy = y - iy
++  data_levels[k]     = a_level
++  data_points[2*k]   = a_x
++  data_points[2*k+1] = a_y
++  data_ids[k]        = a_id
++  data_weights[k]    = a_weight
++}
+ 
+-            var hole = false
+-            dd_loop:
+-            for (var dd = 0; dd < 3; ++dd) {
+-              parts[dd] = 0.0
+-              var iu = (dim + dd + 1) % 3
+-              for (dx = 0; dx < 2; ++dx) {
+-                var s = dx ? fx : 1.0 - fx
+-                r = Math.min(Math.max(ix + dx, 0), shape[0]) | 0
+-                for (dy = 0; dy < 2; ++dy) {
+-                  var t = dy ? fy : 1.0 - fy
+-                  c = Math.min(Math.max(iy + dy, 0), shape[1]) | 0
++function shufflePivot(
++  i, j,
++  a_level, a_x, a_y, a_id, a_weight,
++  data_levels, data_points, data_ids, data_weights) {
+ 
+-                  if (dd < 2) {
+-                    f = this._field[iu].get(r, c)
+-                  } else {
+-                    f = (this.intensity.get(r, c) - this.intensityBounds[0]) / (this.intensityBounds[1] - this.intensityBounds[0])
+-                  }
+-                  if (!isFinite(f) || isNaN(f)) {
+-                    hole = true
+-                    break dd_loop
+-                  }
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
+ 
+-                  var w = s * t
+-                  parts[dd] += w * f
+-                }
+-              }
+-            }
++  data_levels[j]     = a_level
++  data_points[2*j]   = a_x
++  data_points[2*j+1] = a_y
++  data_ids[j]        = a_id
++  data_weights[j]    = a_weight
++}
+ 
+-            if (!hole) {
+-              contourVerts.push(parts[0], parts[1], p[0], p[1], parts[2])
+-              vertexCount += 1
++function compare(i, j, data_levels, data_points, data_ids) {
++  return ((data_levels[i] - data_levels[j]) ||
++          (data_points[2*j] - data_points[2*i]) ||
++          (data_ids[i] - data_ids[j])) < 0
++}
++
++function comparePivot(i, level, x, y, id, data_levels, data_points, data_ids) {
++  return ((level - data_levels[i]) ||
++          (data_points[2*i] - x) ||
++          (id - data_ids[i])) < 0
++}
++
++function quickSort(left, right, data_levels, data_points, data_ids, data_weights) {
++  var sixth = (right - left + 1) / 6 | 0,
++      index1 = left + sixth,
++      index5 = right - sixth,
++      index3 = left + right >> 1,
++      index2 = index3 - sixth,
++      index4 = index3 + sixth,
++      el1 = index1,
++      el2 = index2,
++      el3 = index3,
++      el4 = index4,
++      el5 = index5,
++      less = left + 1,
++      great = right - 1,
++      tmp = 0
++  if(compare(el1, el2, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el1
++    el1 = el2
++    el2 = tmp
++  }
++  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
++  }
++  if(compare(el1, el3, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el1
++    el1 = el3
++    el3 = tmp
++  }
++  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el1, el4, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el1
++    el1 = el4
++    el4 = tmp
++  }
++  if(compare(el3, el4, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el3
++    el3 = el4
++    el4 = tmp
++  }
++  if(compare(el2, el5, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el2
++    el2 = el5
++    el5 = tmp
++  }
++  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
++  }
++
++  var pivot1_level  = data_levels[el2]
++  var pivot1_x      = data_points[2*el2]
++  var pivot1_y      = data_points[2*el2+1]
++  var pivot1_id     = data_ids[el2]
++  var pivot1_weight = data_weights[el2]
++
++  var pivot2_level  = data_levels[el4]
++  var pivot2_x      = data_points[2*el4]
++  var pivot2_y      = data_points[2*el4+1]
++  var pivot2_id     = data_ids[el4]
++  var pivot2_weight = data_weights[el4]
++
++  var ptr0 = el1
++  var ptr2 = el3
++  var ptr4 = el5
++  var ptr5 = index1
++  var ptr6 = index3
++  var ptr7 = index5
++
++  var level_x = data_levels[ptr0]
++  var level_y = data_levels[ptr2]
++  var level_z = data_levels[ptr4]
++  data_levels[ptr5] = level_x
++  data_levels[ptr6] = level_y
++  data_levels[ptr7] = level_z
++
++  for (var i1 = 0; i1 < 2; ++i1) {
++    var x = data_points[2*ptr0+i1]
++    var y = data_points[2*ptr2+i1]
++    var z = data_points[2*ptr4+i1]
++    data_points[2*ptr5+i1] = x
++    data_points[2*ptr6+i1] = y
++    data_points[2*ptr7+i1] = z
++  }
++
++  var id_x = data_ids[ptr0]
++  var id_y = data_ids[ptr2]
++  var id_z = data_ids[ptr4]
++  data_ids[ptr5] = id_x
++  data_ids[ptr6] = id_y
++  data_ids[ptr7] = id_z
++
++  var weight_x = data_weights[ptr0]
++  var weight_y = data_weights[ptr2]
++  var weight_z = data_weights[ptr4]
++  data_weights[ptr5] = weight_x
++  data_weights[ptr6] = weight_y
++  data_weights[ptr7] = weight_z
++
++  move(index2, left,  data_levels, data_points, data_ids, data_weights)
++  move(index4, right, data_levels, data_points, data_ids, data_weights)
++  for (var k = less; k <= great; ++k) {
++    if (comparePivot(k,
++        pivot1_level, pivot1_x, pivot1_y, pivot1_id,
++        data_levels, data_points, data_ids)) {
++      if (k !== less) {
++        swap(k, less, data_levels, data_points, data_ids, data_weights)
++      }
++      ++less;
++    } else {
++      if (!comparePivot(k,
++          pivot2_level, pivot2_x, pivot2_y, pivot2_id,
++          data_levels, data_points, data_ids)) {
++        while (true) {
++          if (!comparePivot(great,
++              pivot2_level, pivot2_x, pivot2_y, pivot2_id,
++              data_levels, data_points, data_ids)) {
++            if (--great < k) {
++              break;
++            }
++            continue;
++          } else {
++            if (comparePivot(great,
++                pivot1_level, pivot1_x, pivot1_y, pivot1_id,
++                data_levels, data_points, data_ids)) {
++              rotate(k, less, great, data_levels, data_points, data_ids, data_weights)
++              ++less;
++              --great;
+             } else {
+-              if (k > 0) {
+-                // If we already added first edge, pop off verts
+-                for (var l = 0; l < 5; ++l) {
+-                  contourVerts.pop()
+-                }
+-                vertexCount -= 1
+-              }
+-              continue edge_loop
++              swap(k, great, data_levels, data_points, data_ids, data_weights)
++              --great;
+             }
++            break;
+           }
+         }
+-        levelCounts.push(vertexCount)
+       }
+-
+-      // Store results
+-      this._contourOffsets[dim] = levelOffsets
+-      this._contourCounts[dim] = levelCounts
+     }
++  }
++  shufflePivot(left, less-1, pivot1_level, pivot1_x, pivot1_y, pivot1_id, pivot1_weight, data_levels, data_points, data_ids, data_weights)
++  shufflePivot(right, great+1, pivot2_level, pivot2_x, pivot2_y, pivot2_id, pivot2_weight, data_levels, data_points, data_ids, data_weights)
++  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
++    insertionSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
++  }
++  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
++    insertionSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
++  }
++  if (great - less <= INSERT_SORT_CUTOFF) {
++    insertionSort(less, great, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(less, great, data_levels, data_points, data_ids, data_weights)
++  }
++}
+ 
+-    var floatBuffer = pool.mallocFloat(contourVerts.length)
+-    for (i = 0; i < contourVerts.length; ++i) {
+-      floatBuffer[i] = contourVerts[i]
++},{}],182:[function(require,module,exports){
++'use strict'
++
++var pool = require('typedarray-pool')
++
++var sortLevels = require('./lib/sort')
++
++module.exports = snapPoints
++
++function partition(points, ids, start, end, lox, loy, hix, hiy) {
++  var mid = start
++  for(var i=start; i<end; ++i) {
++    var x  = points[2*i]
++    var y  = points[2*i+1]
++    var s  = ids[i]
++    if(lox <= x && x <= hix &&
++       loy <= y && y <= hiy) {
++      if(i === mid) {
++        mid += 1
++      } else {
++        points[2*i]     = points[2*mid]
++        points[2*i+1]   = points[2*mid+1]
++        ids[i]          = ids[mid]
++        points[2*mid]   = x
++        points[2*mid+1] = y
++        ids[mid]        = s
++        mid += 1
++      }
+     }
+-    this._contourBuffer.update(floatBuffer)
+-    pool.freeFloat(floatBuffer)
+   }
++  return mid
++}
+ 
+-  if (params.colormap) {
+-    this._colorMap.setPixels(genColormap(params.colormap))
+-  }
++function SnapInterval(pixelSize, offset, count) {
++  this.pixelSize  = pixelSize
++  this.offset     = offset
++  this.count      = count
+ }
+ 
+-proto.dispose = function () {
+-  this._shader.dispose()
+-  this._vao.dispose()
+-  this._coordinateBuffer.dispose()
+-  this._colorMap.dispose()
+-  this._contourBuffer.dispose()
+-  this._contourVAO.dispose()
+-  this._contourShader.dispose()
+-  this._contourPickShader.dispose()
+-  this._dynamicBuffer.dispose()
+-  this._dynamicVAO.dispose()
+-  for (var i = 0; i < 3; ++i) {
+-    pool.freeFloat(this._field[i].data)
++function snapPoints(points, ids, weights, bounds) {
++  var n    = points.length >>> 1
++  if(n < 1) {
++    return []
+   }
+-}
+ 
+-proto.highlight = function (selection) {
+-  if (!selection) {
+-    this._dynamicCounts = [0, 0, 0]
+-    this.dyanamicLevel = [NaN, NaN, NaN]
+-    this.highlightLevel = [-1, -1, -1]
+-    return
++  var lox =  Infinity, loy =  Infinity
++  var hix = -Infinity, hiy = -Infinity
++  for(var i=0; i<n; ++i) {
++    var x = points[2*i]
++    var y = points[2*i+1]
++    lox = Math.min(lox, x)
++    hix = Math.max(hix, x)
++    loy = Math.min(loy, y)
++    hiy = Math.max(hiy, y)
++    ids[i] = i
+   }
+ 
+-  for (var i = 0; i < 3; ++i) {
+-    if (this.enableHighlight[i]) {
+-      this.highlightLevel[i] = selection.level[i]
+-    } else {
+-      this.highlightLevel[i] = -1
+-    }
++  if(lox === hix) {
++    hix += 1 + Math.abs(hix)
++  }
++  if(loy === hiy) {
++    hiy += 1 + Math.abs(hix)
+   }
+ 
+-  var levels
+-  if (this.snapToData) {
+-    levels = selection.dataCoordinate
+-  } else {
+-    levels = selection.position
+-  }
+-  if ((!this.enableDynamic[0] || levels[0] === this.dynamicLevel[0]) &&
+-    (!this.enableDynamic[1] || levels[1] === this.dynamicLevel[1]) &&
+-    (!this.enableDynamic[2] || levels[2] === this.dynamicLevel[2])) {
+-    return
++  //Calculate diameter
++  var scaleX = 1.0 / (hix - lox)
++  var scaleY = 1.0 / (hiy - loy)
++  var diam = Math.max(hix - lox, hiy - loy)
++
++  bounds = bounds || [0,0,0,0]
++
++  bounds[0] = lox
++  bounds[1] = loy
++  bounds[2] = hix
++  bounds[3] = hiy
++
++  var levels = pool.mallocInt32(n)
++  var ptr = 0
++
++  function snapRec(x, y, diam, start, end, level) {
++    var diam_2 = diam * 0.5
++    var offset = start + 1
++    var count = end - start
++    weights[ptr] = count
++    levels[ptr++] = level
++    for(var i=0; i<2; ++i) {
++      for(var j=0; j<2; ++j) {
++        var nx = x+i*diam_2
++        var ny = y+j*diam_2
++        var nextOffset = partition(
++            points
++          , ids
++          , offset
++          , end
++          , nx, ny
++          , nx+diam_2, ny+diam_2)
++        if(nextOffset === offset) {
++          continue
++        }
++        if(nextOffset - offset >= Math.max(0.9 * count, 32)) {
++          var mid = (end + start)>>>1
++          snapRec(nx, ny, diam_2, offset, mid, level+1)
++          offset = mid
++        }
++        snapRec(nx, ny, diam_2, offset, nextOffset, level+1)
++        offset = nextOffset
++      }
++    }
+   }
++  snapRec(lox, loy, diam, 0, n, 0)
++  sortLevels(levels, points, ids, weights, n)
+ 
+-  var vertexCount = 0
+-  var shape = this.shape
+-  var scratchBuffer = pool.mallocFloat(12 * shape[0] * shape[1])
++  var lod         = []
++  var lastLevel   = 0
++  var prevOffset  = n
++  for(var ptr=n-1; ptr>=0; --ptr) {
++    points[2*ptr]   = (points[2*ptr]   - lox) * scaleX
++    points[2*ptr+1] = (points[2*ptr+1] - loy) * scaleY
+ 
+-  for (var d = 0; d < 3; ++d) {
+-    if (!this.enableDynamic[d]) {
+-      this.dynamicLevel[d] = NaN
+-      this._dynamicCounts[d] = 0
++    var level = levels[ptr]
++    if(level === lastLevel) {
+       continue
+     }
+ 
+-    this.dynamicLevel[d] = levels[d]
+-
+-    var u = (d + 1) % 3
+-    var v = (d + 2) % 3
+-
+-    var f = this._field[d]
+-    var g = this._field[u]
+-    var h = this._field[v]
+-    var intensity = this.intensity
+-
+-    var graph = surfaceNets(f, levels[d])
+-    var edges = graph.cells
+-    var positions = graph.positions
++    lod.push(new SnapInterval(
++      diam * Math.pow(0.5, level),
++      ptr+1,
++      prevOffset - (ptr+1)
++    ))
++    prevOffset = ptr+1
+ 
+-    this._dynamicOffsets[d] = vertexCount
++    lastLevel = level
++  }
+ 
+-    for (i = 0; i < edges.length; ++i) {
+-      var e = edges[i]
+-      for (var j = 0; j < 2; ++j) {
+-        var p = positions[e[j]]
++  lod.push(new SnapInterval(diam * Math.pow(0.5, level+1), 0, prevOffset))
++  pool.free(levels)
+ 
+-        var x = +p[0]
+-        var ix = x | 0
+-        var jx = Math.min(ix + 1, shape[0]) | 0
+-        var fx = x - ix
+-        var hx = 1.0 - fx
++  return lod
++}
+ 
+-        var y = +p[1]
+-        var iy = y | 0
+-        var jy = Math.min(iy + 1, shape[1]) | 0
+-        var fy = y - iy
+-        var hy = 1.0 - fy
++},{"./lib/sort":181,"typedarray-pool":449}],183:[function(require,module,exports){
++'use strict'
+ 
+-        var w00 = hx * hy
+-        var w01 = hx * fy
+-        var w10 = fx * hy
+-        var w11 = fx * fy
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var bsearch = require('binary-search-bounds')
++var snapPoints = require('snap-points-2d')
+ 
+-        var cu = w00 * g.get(ix, iy) +
+-          w01 * g.get(ix, jy) +
+-          w10 * g.get(jx, iy) +
+-          w11 * g.get(jx, jy)
++var pool = require('typedarray-pool')
+ 
+-        var cv = w00 * h.get(ix, iy) +
+-          w01 * h.get(ix, jy) +
+-          w10 * h.get(jx, iy) +
+-          w11 * h.get(jx, jy)
++var SHADERS = require('./lib/shader')
+ 
+-        if (isNaN(cu) || isNaN(cv)) {
+-          if (j) {
+-            vertexCount -= 1
+-          }
+-          break
+-        }
++module.exports = createScatter2D
+ 
+-        scratchBuffer[2 * vertexCount + 0] = cu
+-        scratchBuffer[2 * vertexCount + 1] = cv
++function Scatter2D(plot, offsetBuffer, pickBuffer, weightBuffer, shader, pickShader) {
++  this.plot           = plot
++  this.offsetBuffer   = offsetBuffer
++  this.pickBuffer     = pickBuffer
++  this.weightBuffer   = weightBuffer
++  this.shader         = shader
++  this.pickShader     = pickShader
++  this.scales         = []
++  this.size           = 12.0
++  this.borderSize     = 1.0
++  this.pointCount     = 0
++  this.color          = [1,0,0,1]
++  this.borderColor    = [0,0,0,1]
++  this.bounds         = [Infinity,Infinity,-Infinity,-Infinity]
++  this.pickOffset     = 0
++  this.points         = null
++  this.xCoords        = null
++}
+ 
+-        vertexCount += 1
+-      }
+-    }
++var proto = Scatter2D.prototype
+ 
+-    this._dynamicCounts[d] = vertexCount - this._dynamicOffsets[d]
++proto.dispose = function() {
++  this.shader.dispose()
++  this.pickShader.dispose()
++  this.offsetBuffer.dispose()
++  this.pickBuffer.dispose()
++  if(this.xCoords) {
++    pool.free(this.xCoords)
+   }
+-
+-  this._dynamicBuffer.update(scratchBuffer.subarray(0, 2 * vertexCount))
+-  pool.freeFloat(scratchBuffer)
++  this.plot.removeObject(this)
+ }
+ 
+-function createSurfacePlot (params) {
+-  var gl = params.gl
+-  var shader = createShader(gl)
+-  var pickShader = createPickShader(gl)
+-  var contourShader = createContourShader(gl)
+-  var contourPickShader = createPickContourShader(gl)
+-
+-  var coordinateBuffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    { buffer: coordinateBuffer,
+-      size: 4,
+-      stride: SURFACE_VERTEX_SIZE,
+-      offset: 0
+-    },
+-    { buffer: coordinateBuffer,
+-      size: 3,
+-      stride: SURFACE_VERTEX_SIZE,
+-      offset: 16
+-    },
+-    {
+-      buffer: coordinateBuffer,
+-      size: 3,
+-      stride: SURFACE_VERTEX_SIZE,
+-      offset: 28
+-    }
+-  ])
++proto.update = function(options) {
++  options = options || {}
+ 
+-  var contourBuffer = createBuffer(gl)
+-  var contourVAO = createVAO(gl, [
+-    {
+-      buffer: contourBuffer,
+-      size: 4,
+-      stride: 20,
+-      offset: 0
+-    },
+-    {
+-      buffer: contourBuffer,
+-      size: 1,
+-      stride: 20,
+-      offset: 16
++  function dflt(opt, value) {
++    if(opt in options) {
++      return options[opt]
+     }
+-  ])
+-
+-  var dynamicBuffer = createBuffer(gl)
+-  var dynamicVAO = createVAO(gl, [
+-    {
+-      buffer: dynamicBuffer,
+-      size: 2,
+-      type: gl.FLOAT
+-    }])
+-
+-  var cmap = createTexture(gl, 1, N_COLORS, gl.RGBA, gl.UNSIGNED_BYTE)
+-  cmap.minFilter = gl.LINEAR
+-  cmap.magFilter = gl.LINEAR
++    return value
++  }
+ 
+-  var surface = new SurfacePlot(
+-    gl,
+-    [0, 0],
+-    [[0, 0, 0], [0, 0, 0]],
+-    shader,
+-    pickShader,
+-    coordinateBuffer,
+-    vao,
+-    cmap,
+-    contourShader,
+-    contourPickShader,
+-    contourBuffer,
+-    contourVAO,
+-    dynamicBuffer,
+-    dynamicVAO)
++  this.size         = dflt('size', 12.0)
++  this.color        = dflt('color', [1,0,0,1]).slice()
++  this.borderSize   = dflt('borderSize', 1)
++  this.borderColor  = dflt('borderColor', [0,0,0,1]).slice()
+ 
+-  var nparams = {
+-    levels: [[], [], []]
++  //Update point data
++  if(this.xCoords) {
++    pool.free(this.xCoords)
+   }
+-  for (var id in params) {
+-    nparams[id] = params[id]
++  var data          = options.positions
++  var packed        = pool.mallocFloat32(data.length)
++  var packedId      = pool.mallocInt32(data.length>>>1)
++  packed.set(data)
++  var packedW       = pool.mallocFloat32(data.length)
++  this.points       = data
++  this.scales       = snapPoints(packed, packedId, packedW, this.bounds)
++  this.offsetBuffer.update(packed)
++  this.pickBuffer.update(packedId)
++  this.weightBuffer.update(packedW)
++  var xCoords      = pool.mallocFloat32(data.length>>>1)
++  for(var i=0,j=0; i<data.length; i+=2,++j) {
++    xCoords[j] = packed[i]
+   }
+-  nparams.colormap = nparams.colormap || 'jet'
++  pool.free(packedId)
++  pool.free(packed)
++  pool.free(packedW)
+ 
+-  surface.update(nparams)
++  this.xCoords = xCoords
+ 
+-  return surface
++  this.pointCount = data.length >>> 1
++  this.pickOffset = 0
+ }
+ 
+-},{"./lib/shaders":222,"binary-search-bounds":223,"bit-twiddle":51,"colormap":106,"gl-buffer":124,"gl-mat4/invert":143,"gl-mat4/multiply":145,"gl-texture2d":228,"gl-vao":232,"ndarray":433,"ndarray-gradient":224,"ndarray-ops":432,"ndarray-pack":225,"surface-nets":452,"typedarray-pool":458}],228:[function(require,module,exports){
+-'use strict'
++proto.drawPick = (function() {
++  var MATRIX = [1,0,0,
++                0,1,0,
++                0,0,1]
++  var PICK_VEC4 = [0,0,0,0]
++return function(pickOffset) {
++  var plot          = this.plot
++  var shader        = this.pickShader
++  var scales        = this.scales
++  var offsetBuffer  = this.offsetBuffer
++  var pickBuffer    = this.pickBuffer
++  var bounds        = this.bounds
++  var size          = this.size
++  var borderSize    = this.borderSize
++  var gl            = plot.gl
++  var pixelRatio    = plot.pickPixelRatio
++  var viewBox       = plot.viewBox
++  var dataBox       = plot.dataBox
+ 
+-var ndarray = require('ndarray')
+-var ops     = require('ndarray-ops')
+-var pool    = require('typedarray-pool')
++  if(this.pointCount === 0) {
++    return pickOffset
++  }
+ 
+-module.exports = createTexture2D
++  var boundX  = bounds[2] - bounds[0]
++  var boundY  = bounds[3] - bounds[1]
++  var dataX   = dataBox[2] - dataBox[0]
++  var dataY   = dataBox[3] - dataBox[1]
++  var screenX = (viewBox[2] - viewBox[0]) * pixelRatio / plot.pixelRatio
++  var screenY = (viewBox[3] - viewBox[1]) * pixelRatio / plot.pixelRatio
+ 
+-var linearTypes = null
+-var filterTypes = null
+-var wrapTypes   = null
++  var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
++  var targetScale = pixelSize
+ 
+-function lazyInitLinearTypes(gl) {
+-  linearTypes = [
+-    gl.LINEAR,
+-    gl.NEAREST_MIPMAP_LINEAR,
+-    gl.LINEAR_MIPMAP_NEAREST,
+-    gl.LINEAR_MIPMAP_NEAREST
+-  ]
+-  filterTypes = [
+-    gl.NEAREST,
+-    gl.LINEAR,
+-    gl.NEAREST_MIPMAP_NEAREST,
+-    gl.NEAREST_MIPMAP_LINEAR,
+-    gl.LINEAR_MIPMAP_NEAREST,
+-    gl.LINEAR_MIPMAP_LINEAR
+-  ]
+-  wrapTypes = [
+-    gl.REPEAT,
+-    gl.CLAMP_TO_EDGE,
+-    gl.MIRRORED_REPEAT
+-  ]
+-}
+ 
+-var convertFloatToUint8 = function(out, inp) {
+-  ops.muls(out, inp, 255.0)
+-}
++  MATRIX[0] = 2.0 * boundX / dataX
++  MATRIX[4] = 2.0 * boundY / dataY
++  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-function reshapeTexture(tex, w, h) {
+-  var gl = tex.gl
+-  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(w < 0 || w > maxSize || h < 0 || h > maxSize) {
+-    throw new Error('gl-texture2d: Invalid texture size')
++  this.pickOffset = pickOffset
++  PICK_VEC4[0] = ( pickOffset      & 0xff)
++  PICK_VEC4[1] = ((pickOffset>>8)  & 0xff)
++  PICK_VEC4[2] = ((pickOffset>>16) & 0xff)
++  PICK_VEC4[3] = ((pickOffset>>24) & 0xff)
++
++  shader.bind()
++  shader.uniforms.matrix      = MATRIX
++  shader.uniforms.color       = this.color
++  shader.uniforms.borderColor = this.borderColor
++  shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
++  shader.uniforms.pickOffset  = PICK_VEC4
++
++  if(this.borderSize === 0) {
++    shader.uniforms.centerFraction = 2.0;
++  } else {
++    shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
+   }
+-  tex._shape = [w, h]
+-  tex.bind()
+-  gl.texImage2D(gl.TEXTURE_2D, 0, tex.format, w, h, 0, tex.format, tex.type, null)
+-  tex._mipLevels = [0]
+-  return tex
+-}
+ 
+-function Texture2D(gl, handle, width, height, format, type) {
+-  this.gl = gl
+-  this.handle = handle
+-  this.format = format
+-  this.type = type
+-  this._shape = [width, height]
+-  this._mipLevels = [0]
+-  this._magFilter = gl.NEAREST
+-  this._minFilter = gl.NEAREST
+-  this._wrapS = gl.CLAMP_TO_EDGE
+-  this._wrapT = gl.CLAMP_TO_EDGE
+-  this._anisoSamples = 1
++  offsetBuffer.bind()
++  shader.attributes.position.pointer()
++  pickBuffer.bind()
++  shader.attributes.pickId.pointer(gl.UNSIGNED_BYTE)
+ 
+-  var parent = this
+-  var wrapVector = [this._wrapS, this._wrapT]
+-  Object.defineProperties(wrapVector, [
+-    {
+-      get: function() {
+-        return parent._wrapS
+-      },
+-      set: function(v) {
+-        return parent.wrapS = v
+-      }
+-    },
+-    {
+-      get: function() {
+-        return parent._wrapT
+-      },
+-      set: function(v) {
+-        return parent.wrapT = v
+-      }
++  var xCoords = this.xCoords
++  var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
++  var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
++
++  for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
++    var lod     = scales[scaleNum]
++    if(lod.pixelSize < pixelSize && scaleNum > 1) {
++      continue
+     }
+-  ])
+-  this._wrapVector = wrapVector
+ 
+-  var shapeVector = [this._shape[0], this._shape[1]]
+-  Object.defineProperties(shapeVector, [
+-    {
+-      get: function() {
+-        return parent._shape[0]
+-      },
+-      set: function(v) {
+-        return parent.width = v
+-      }
+-    },
+-    {
+-      get: function() {
+-        return parent._shape[1]
+-      },
+-      set: function(v) {
+-        return parent.height = v
+-      }
++    var intervalStart = lod.offset
++    var intervalEnd   = lod.count + intervalStart
++
++    var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
++    var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
++
++    if(endOffset > startOffset) {
++      gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
+     }
+-  ])
+-  this._shapeVector = shapeVector
++  }
++
++  return pickOffset + this.pointCount
+ }
++})()
+ 
+-var proto = Texture2D.prototype
++proto.draw = (function() {
++  var MATRIX = [1, 0, 0,
++                0, 1, 0,
++                0, 0, 1]
+ 
+-Object.defineProperties(proto, {
+-  minFilter: {
+-    get: function() {
+-      return this._minFilter
+-    },
+-    set: function(v) {
+-      this.bind()
+-      var gl = this.gl
+-      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
+-        if(!gl.getExtension('OES_texture_float_linear')) {
+-          v = gl.NEAREST
+-        }
+-      }
+-      if(filterTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown filter mode ' + v)
+-      }
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, v)
+-      return this._minFilter = v
+-    }
+-  },
+-  magFilter: {
+-    get: function() {
+-      return this._magFilter
+-    },
+-    set: function(v) {
+-      this.bind()
+-      var gl = this.gl
+-      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
+-        if(!gl.getExtension('OES_texture_float_linear')) {
+-          v = gl.NEAREST
+-        }
+-      }
+-      if(filterTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown filter mode ' + v)
+-      }
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, v)
+-      return this._magFilter = v
+-    }
+-  },
+-  mipSamples: {
+-    get: function() {
+-      return this._anisoSamples
+-    },
+-    set: function(i) {
+-      var psamples = this._anisoSamples
+-      this._anisoSamples = Math.max(i, 1)|0
+-      if(psamples !== this._anisoSamples) {
+-        var ext = gl.getExtension('EXT_texture_filter_anisotropic')
+-        if(ext) {
+-          this.gl.texParameterf(this.gl.TEXTURE_2D, ext.TEXTURE_MAX_ANISOTROPY_EXT, this._anisoSamples)
+-        }
+-      }
+-      return this._anisoSamples
+-    }
+-  },
+-  wrapS: {
+-    get: function() {
+-      return this._wrapS
+-    },
+-    set: function(v) {
+-      this.bind()
+-      if(wrapTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
+-      }
+-      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_S, v)
+-      return this._wrapS = v
++  return function() {
++    var plot          = this.plot
++    var shader        = this.shader
++    var scales        = this.scales
++    var offsetBuffer  = this.offsetBuffer
++    var bounds        = this.bounds
++    var size          = this.size
++    var borderSize    = this.borderSize
++    var gl            = plot.gl
++    var pixelRatio    = plot.pixelRatio
++    var viewBox       = plot.viewBox
++    var dataBox       = plot.dataBox
++
++    if(this.pointCount === 0) {
++      return
+     }
+-  },
+-  wrapT: {
+-    get: function() {
+-      return this._wrapT
+-    },
+-    set: function(v) {
+-      this.bind()
+-      if(wrapTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
+-      }
+-      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_T, v)
+-      return this._wrapT = v
++
++    var boundX  = bounds[2] - bounds[0]
++    var boundY  = bounds[3] - bounds[1]
++    var dataX   = dataBox[2] - dataBox[0]
++    var dataY   = dataBox[3] - dataBox[1]
++    var screenX = viewBox[2] - viewBox[0]
++    var screenY = viewBox[3] - viewBox[1]
++
++    var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
++    var targetScale = pixelSize
++
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++
++    shader.bind()
++    shader.uniforms.matrix      = MATRIX
++    shader.uniforms.color       = this.color
++    shader.uniforms.borderColor = this.borderColor
++    shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
++    shader.uniforms.useWeight   = 1
++
++    if(this.borderSize === 0) {
++      shader.uniforms.centerFraction = 2.0;
++    } else {
++      shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
+     }
+-  },
+-  wrap: {
+-    get: function() {
+-      return this._wrapVector
+-    },
+-    set: function(v) {
+-      if(!Array.isArray(v)) {
+-        v = [v,v]
+-      }
+-      if(v.length !== 2) {
+-        throw new Error('gl-texture2d: Must specify wrap mode for rows and columns')
+-      }
+-      for(var i=0; i<2; ++i) {
+-        if(wrapTypes.indexOf(v[i]) < 0) {
+-          throw new Error('gl-texture2d: Unknown wrap mode ' + v)
+-        }
++
++    offsetBuffer.bind()
++    shader.attributes.position.pointer()
++
++    this.weightBuffer.bind()
++    shader.attributes.weight.pointer()
++
++    var xCoords = this.xCoords
++    var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
++    var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
++
++    var firstLevel = true
++
++    for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
++      var lod     = scales[scaleNum]
++      if(lod.pixelSize < pixelSize && scaleNum > 1) {
++        continue
+       }
+-      this._wrapS = v[0]
+-      this._wrapT = v[1]
+ 
+-      var gl = this.gl
+-      this.bind()
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, this._wrapS)
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, this._wrapT)
++      var intervalStart = lod.offset
++      var intervalEnd   = lod.count + intervalStart
+ 
+-      return v
+-    }
+-  },
+-  shape: {
+-    get: function() {
+-      return this._shapeVector
+-    },
+-    set: function(x) {
+-      if(!Array.isArray(x)) {
+-        x = [x|0,x|0]
+-      } else {
+-        if(x.length !== 2) {
+-          throw new Error('gl-texture2d: Invalid texture shape')
+-        }
++      var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
++      var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
++
++      if(endOffset > startOffset) {
++        gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
++      }
++
++      if(firstLevel) {
++        firstLevel = false
++        shader.uniforms.useWeight = 0
+       }
+-      reshapeTexture(this, x[0]|0, x[1]|0)
+-      return [x[0]|0, x[1]|0]
+-    }
+-  },
+-  width: {
+-    get: function() {
+-      return this._shape[0]
+-    },
+-    set: function(w) {
+-      w = w|0
+-      reshapeTexture(this, w, this._shape[1])
+-      return w
+-    }
+-  },
+-  height: {
+-    get: function() {
+-      return this._shape[1]
+-    },
+-    set: function(h) {
+-      h = h|0
+-      reshapeTexture(this, this._shape[0], h)
+-      return h
+     }
+   }
+-})
++})()
+ 
+-proto.bind = function(unit) {
+-  var gl = this.gl
+-  if(unit !== undefined) {
+-    gl.activeTexture(gl.TEXTURE0 + (unit|0))
++proto.pick = function(x, y, value) {
++  var pickOffset = this.pickOffset
++  var pointCount = this.pointCount
++  if(value < pickOffset || value >= pickOffset + pointCount) {
++    return null
+   }
+-  gl.bindTexture(gl.TEXTURE_2D, this.handle)
+-  if(unit !== undefined) {
+-    return (unit|0)
++  var pointId = value - pickOffset
++  var points = this.points
++  return {
++    object:  this,
++    pointId: pointId,
++    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+   }
+-  return gl.getParameter(gl.ACTIVE_TEXTURE) - gl.TEXTURE0
+ }
+ 
+-proto.dispose = function() {
+-  this.gl.deleteTexture(this.handle)
+-}
++function createScatter2D(plot, options) {
++  var gl     = plot.gl
++  var buffer = createBuffer(gl)
++  var pickBuffer = createBuffer(gl)
++  var weightBuffer = createBuffer(gl)
++  var shader = createShader(gl, SHADERS.pointVertex, SHADERS.pointFragment)
++  var pickShader = createShader(gl, SHADERS.pickVertex, SHADERS.pickFragment)
+ 
+-proto.generateMipmap = function() {
+-  this.bind()
+-  this.gl.generateMipmap(this.gl.TEXTURE_2D)
++  var result = new Scatter2D(
++    plot, buffer, pickBuffer, weightBuffer, shader, pickShader)
++  result.update(options)
+ 
+-  //Update mip levels
+-  var l = Math.min(this._shape[0], this._shape[1])
+-  for(var i=0; l>0; ++i, l>>>=1) {
+-    if(this._mipLevels.indexOf(i) < 0) {
+-      this._mipLevels.push(i)
+-    }
+-  }
++  //Register with plot
++  plot.addObject(result)
++
++  return result
+ }
+ 
+-proto.setPixels = function(data, x_off, y_off, mip_level) {
+-  var gl = this.gl
+-  this.bind()
+-  if(Array.isArray(x_off)) {
+-    mip_level = y_off
+-    y_off = x_off[1]|0
+-    x_off = x_off[0]|0
+-  } else {
+-    x_off = x_off || 0
+-    y_off = y_off || 0
++},{"./lib/shader":179,"binary-search-bounds":180,"gl-buffer":121,"gl-shader":190,"snap-points-2d":182,"typedarray-pool":449}],184:[function(require,module,exports){
++"use strict"
++
++var vectorizeText = require("vectorize-text")
++
++module.exports = getGlyph
++
++var GLYPH_CACHE = {}
++
++function getGlyph(symbol, font) {
++  var fontCache = GLYPH_CACHE[font]
++  if(!fontCache) {
++    fontCache = GLYPH_CACHE[font] = {}
+   }
+-  mip_level = mip_level || 0
+-  if(data instanceof HTMLCanvasElement ||
+-     data instanceof ImageData ||
+-     data instanceof HTMLImageElement ||
+-     data instanceof HTMLVideoElement) {
+-    var needsMip = this._mipLevels.indexOf(mip_level) < 0
+-    if(needsMip) {
+-      gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, this.type, data)
+-      this._mipLevels.push(mip_level)
+-    } else {
+-      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, this.format, this.type, data)
+-    }
+-  } else if(data.shape && data.stride && data.data) {
+-    if(data.shape.length < 2 ||
+-       x_off + data.shape[1] > this._shape[1]>>>mip_level ||
+-       y_off + data.shape[0] > this._shape[0]>>>mip_level ||
+-       x_off < 0 ||
+-       y_off < 0) {
+-      throw new Error('gl-texture2d: Texture dimensions are out of bounds')
++  if(symbol in fontCache) {
++    return fontCache[symbol]
++  }
++
++  //Get line and triangle meshes for glyph
++  var lineSymbol = vectorizeText(symbol, {
++      textAlign: "center",
++      textBaseline: "middle",
++      lineHeight: 1.0,
++      font: font
++    }) 
++  var triSymbol = vectorizeText(symbol, {
++      triangles: true,
++      textAlign: "center",
++      textBaseline: "middle",
++      lineHeight: 1.0,
++      font: font
++    })
++
++  //Calculate bounding box
++  var bounds = [[Infinity,Infinity], [-Infinity,-Infinity]]
++  for(var i=0; i<lineSymbol.positions.length; ++i) {
++    var p = lineSymbol.positions[i]
++    for(var j=0; j<2; ++j) {
++      bounds[0][j] = Math.min(bounds[0][j], p[j])
++      bounds[1][j] = Math.max(bounds[1][j], p[j])
+     }
+-    texSubImageArray(gl, x_off, y_off, mip_level, this.format, this.type, this._mipLevels, data)
+-  } else {
+-    throw new Error('gl-texture2d: Unsupported data type')
+   }
++
++  //Save cached symbol
++  return fontCache[symbol] = [triSymbol, lineSymbol, bounds]
+ }
++},{"vectorize-text":460}],185:[function(require,module,exports){
++var createShaderWrapper = require('gl-shader')
+ 
+ 
+-function isPacked(shape, stride) {
+-  if(shape.length === 3) {
+-    return  (stride[2] === 1) &&
+-            (stride[1] === shape[0]*shape[2]) &&
+-            (stride[0] === shape[2])
++var perspectiveVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\n\nuniform vec4 highlightId;\nuniform float highlightScale;\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   || \n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = 1.0;\n    if(distance(highlightId, id) < 0.0001) {\n      scale = highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1);\n    vec4 viewPosition = view * worldPosition;\n    viewPosition = viewPosition / viewPosition.w;\n    vec4 clipPosition = projection * (viewPosition + scale * vec4(glyph.x, -glyph.y, 0, 0));\n    \n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
++var orthographicVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float highlightScale, pixelRatio;\nuniform vec4 highlightId;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = pixelRatio;\n    if(distance(highlightId.bgr, id.bgr) < 0.001) {\n      scale *= highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1.0);\n    vec4 viewPosition = view * worldPosition;\n    vec4 clipPosition = projection * viewPosition;\n    clipPosition /= clipPosition.w;\n    \n    gl_Position = clipPosition + vec4(screenSize * scale * vec2(glyph.x, -glyph.y), 0.0, 0.0);\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
++var projectionVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform float highlightScale;\nuniform vec4 highlightId;\nuniform vec3 axes[2];\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float scale, pixelRatio;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   ||\n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float lscale = pixelRatio * scale;\n    if(distance(highlightId, id) < 0.0001) {\n      lscale *= highlightScale;\n    }\n\n    vec4 clipCenter   = projection * view * model * vec4(position, 1);\n    vec3 dataPosition = position + 0.5*lscale*(axes[0] * glyph.x + axes[1] * glyph.y) * clipCenter.w * screenSize.y;\n    vec4 clipPosition = projection * view * model * vec4(dataPosition, 1);\n\n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = dataPosition;\n  }\n}\n"
++var drawFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float opacity;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   ||\n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = interpColor * opacity;\n  }\n}\n"
++var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float pickGroup;\n\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   || \n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = vec4(pickGroup, pickId.bgr);\n  }\n}"
++
++var ATTRIBUTES = [
++  {name: 'position', type: 'vec3'},
++  {name: 'color', type: 'vec4'},
++  {name: 'glyph', type: 'vec2'},
++  {name: 'id', type: 'vec4'}
++]
++
++var perspective = {
++    vertex: perspectiveVertSrc,
++    fragment: drawFragSrc,
++    attributes: ATTRIBUTES
++  },
++  ortho = {
++    vertex: orthographicVertSrc,
++    fragment: drawFragSrc,
++    attributes: ATTRIBUTES
++  },
++  project = {
++    vertex: projectionVertSrc,
++    fragment: drawFragSrc,
++    attributes: ATTRIBUTES
++  },
++  pickPerspective = {
++    vertex: perspectiveVertSrc,
++    fragment: pickFragSrc,
++    attributes: ATTRIBUTES
++  },
++  pickOrtho = {
++    vertex: orthographicVertSrc,
++    fragment: pickFragSrc,
++    attributes: ATTRIBUTES
++  },
++  pickProject = {
++    vertex: projectionVertSrc,
++    fragment: pickFragSrc,
++    attributes: ATTRIBUTES
+   }
+-  return  (stride[0] === 1) &&
+-          (stride[1] === shape[0])
++
++function createShader(gl, src) {
++  var shader = createShaderWrapper(gl, src)
++  var attr = shader.attributes
++  attr.position.location = 0
++  attr.color.location = 1
++  attr.glyph.location = 2
++  attr.id.location = 3
++  return shader
+ }
+ 
+-function texSubImageArray(gl, x_off, y_off, mip_level, cformat, ctype, mipLevels, array) {
+-  var dtype = array.dtype
+-  var shape = array.shape.slice()
+-  if(shape.length < 2 || shape.length > 3) {
+-    throw new Error('gl-texture2d: Invalid ndarray, must be 2d or 3d')
+-  }
+-  var type = 0, format = 0
+-  var packed = isPacked(shape, array.stride.slice())
+-  if(dtype === 'float32') {
+-    type = gl.FLOAT
+-  } else if(dtype === 'float64') {
+-    type = gl.FLOAT
+-    packed = false
+-    dtype = 'float32'
+-  } else if(dtype === 'uint8') {
+-    type = gl.UNSIGNED_BYTE
+-  } else {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
+-    dtype = 'uint8'
+-  }
+-  var channels = 1
+-  if(shape.length === 2) {
+-    format = gl.LUMINANCE
+-    shape = [shape[0], shape[1], 1]
+-    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
+-  } else if(shape.length === 3) {
+-    if(shape[2] === 1) {
+-      format = gl.ALPHA
+-    } else if(shape[2] === 2) {
+-      format = gl.LUMINANCE_ALPHA
+-    } else if(shape[2] === 3) {
+-      format = gl.RGB
+-    } else if(shape[2] === 4) {
+-      format = gl.RGBA
+-    } else {
+-      throw new Error('gl-texture2d: Invalid shape for pixel coords')
+-    }
+-    channels = shape[2]
+-  } else {
+-    throw new Error('gl-texture2d: Invalid shape for texture')
+-  }
+-  //For 1-channel textures allow conversion between formats
+-  if((format  === gl.LUMINANCE || format  === gl.ALPHA) &&
+-     (cformat === gl.LUMINANCE || cformat === gl.ALPHA)) {
+-    format = cformat
+-  }
+-  if(format !== cformat) {
+-    throw new Error('gl-texture2d: Incompatible texture format for setPixels')
+-  }
+-  var size = array.size
+-  var needsMip = mipLevels.indexOf(mip_level) < 0
+-  if(needsMip) {
+-    mipLevels.push(mip_level)
+-  }
+-  if(type === ctype && packed) {
+-    //Array data types are compatible, can directly copy into texture
+-    if(array.offset === 0 && array.data.length === size) {
+-      if(needsMip) {
+-        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data)
+-      } else {
+-        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data)
+-      }
+-    } else {
+-      if(needsMip) {
+-        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data.subarray(array.offset, array.offset+size))
+-      } else {
+-        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data.subarray(array.offset, array.offset+size))
+-      }
+-    }
+-  } else {
+-    //Need to do type conversion to pack data into buffer
+-    var pack_buffer
+-    if(ctype === gl.FLOAT) {
+-      pack_buffer = pool.mallocFloat32(size)
+-    } else {
+-      pack_buffer = pool.mallocUint8(size)
+-    }
+-    var pack_view = ndarray(pack_buffer, shape, [shape[2], shape[2]*shape[0], 1])
+-    if(type === gl.FLOAT && ctype === gl.UNSIGNED_BYTE) {
+-      convertFloatToUint8(pack_view, array)
+-    } else {
+-      ops.assign(pack_view, array)
+-    }
+-    if(needsMip) {
+-      gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, pack_buffer.subarray(0, size))
+-    } else {
+-      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, pack_buffer.subarray(0, size))
+-    }
+-    if(ctype === gl.FLOAT) {
+-      pool.freeFloat32(pack_buffer)
+-    } else {
+-      pool.freeUint8(pack_buffer)
+-    }
++exports.createPerspective = function(gl) {
++  return createShader(gl, perspective)
++}
++exports.createOrtho = function(gl) {
++  return createShader(gl, ortho)
++}
++exports.createProject = function(gl) {
++  return createShader(gl, project)
++}
++exports.createPickPerspective = function(gl) {
++  return createShader(gl, pickPerspective)
++}
++exports.createPickOrtho = function(gl) {
++  return createShader(gl, pickOrtho)
++}
++exports.createPickProject = function(gl) {
++  return createShader(gl, pickProject)
++}
++
++},{"gl-shader":190}],186:[function(require,module,exports){
++'use strict'
++
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var pool          = require('typedarray-pool')
++var mat4mult      = require('gl-mat4/multiply')
++var shaders       = require('./lib/shaders')
++var getGlyph      = require('./lib/glyphs')
++
++var IDENTITY = [1,0,0,0,
++                0,1,0,0,
++                0,0,1,0,
++                0,0,0,1]
++
++module.exports = createPointCloud
++
++function transformMat4(x, m) {
++  var x0 = x[0]
++  var x1 = x[1]
++  var x2 = x[2]
++  var x3 = x[3]
++  x[0] = m[0] * x0 + m[4] * x1 + m[8]  * x2 + m[12] * x3
++  x[1] = m[1] * x0 + m[5] * x1 + m[9]  * x2 + m[13] * x3
++  x[2] = m[2] * x0 + m[6] * x1 + m[10] * x2 + m[14] * x3
++  x[3] = m[3] * x0 + m[7] * x1 + m[11] * x2 + m[15] * x3
++  return x
++}
++
++function project(p, v, m, x) {
++  transformMat4(x, x, m)
++  transformMat4(x, x, v)
++  return transformMat4(x, x, p)
++}
++
++function clampVec(v) {
++  var result = new Array(3)
++  for(var i=0; i<3; ++i) {
++    result[i] = Math.min(Math.max(v[i], -1e8), 1e8)
+   }
++  return result
++}
++
++function ScatterPlotPickResult(index, position) {
++  this.index = index
++  this.dataCoordinate = this.position = position
+ }
+ 
+-function initTexture(gl) {
+-  var tex = gl.createTexture()
+-  gl.bindTexture(gl.TEXTURE_2D, tex)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
+-  return tex
+-}
++function PointCloud(
++  gl,
++  shader,
++  orthoShader,
++  projectShader,
++  pointBuffer,
++  colorBuffer,
++  glyphBuffer,
++  idBuffer,
++  vao,
++  pickPerspectiveShader,
++  pickOrthoShader,
++  pickProjectShader) {
++
++  this.gl              = gl
++
++  this.pixelRatio      = 1
++
++  this.shader          = shader
++  this.orthoShader     = orthoShader
++  this.projectShader   = projectShader
++
++  this.pointBuffer     = pointBuffer
++  this.colorBuffer     = colorBuffer
++  this.glyphBuffer     = glyphBuffer
++  this.idBuffer        = idBuffer
++  this.vao             = vao
++  this.vertexCount     = 0
++  this.lineVertexCount = 0
++
++  this.opacity         = 1.0
++
++  this.lineWidth       = 0
++  this.projectScale    = [2.0/3.0, 2.0/3.0, 2.0/3.0]
++  this.projectOpacity  = [1,1,1]
++
++  this.pickId                = 0
++  this.pickPerspectiveShader = pickPerspectiveShader
++  this.pickOrthoShader       = pickOrthoShader
++  this.pickProjectShader     = pickProjectShader
++  this.points                = []
++
++  this._selectResult = new ScatterPlotPickResult(0, [0,0,0])
+ 
+-function createTextureShape(gl, width, height, format, type) {
+-  var maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(width < 0 || width > maxTextureSize || height < 0 || height  > maxTextureSize) {
+-    throw new Error('gl-texture2d: Invalid texture shape')
+-  }
+-  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
+-    throw new Error('gl-texture2d: Floating point textures not supported on this platform')
+-  }
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, format, type, null)
+-  return new Texture2D(gl, tex, width, height, format, type)
++  this.useOrtho = true
++  this.bounds   = [[ Infinity,Infinity,Infinity],
++                   [-Infinity,-Infinity,-Infinity]]
++
++  //Axes projections
++  this.axesProject = [ true, true, true ]
++  this.axesBounds = [[-Infinity,-Infinity,-Infinity],
++                     [ Infinity, Infinity, Infinity]]
++
++  this.highlightId    = [1,1,1,1]
++  this.highlightScale = 2
++
++  this.clipBounds = [[-Infinity,-Infinity,-Infinity],
++                     [ Infinity, Infinity, Infinity]]
++
++  this.dirty = true
+ }
+ 
+-function createTextureDOM(gl, element, format, type) {
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, format, type, element)
+-  return new Texture2D(gl, tex, element.width|0, element.height|0, format, type)
++var proto = PointCloud.prototype
++
++proto.pickSlots = 1
++
++proto.setPickBase = function(pickBase) {
++  this.pickId = pickBase
+ }
+ 
+-//Creates a texture from an ndarray
+-function createTextureArray(gl, array) {
+-  var dtype = array.dtype
+-  var shape = array.shape.slice()
+-  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(shape[0] < 0 || shape[0] > maxSize || shape[1] < 0 || shape[1] > maxSize) {
+-    throw new Error('gl-texture2d: Invalid texture size')
+-  }
+-  var packed = isPacked(shape, array.stride.slice())
+-  var type = 0
+-  if(dtype === 'float32') {
+-    type = gl.FLOAT
+-  } else if(dtype === 'float64') {
+-    type = gl.FLOAT
+-    packed = false
+-    dtype = 'float32'
+-  } else if(dtype === 'uint8') {
+-    type = gl.UNSIGNED_BYTE
+-  } else {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
+-    dtype = 'uint8'
++proto.isTransparent = function() {
++  if(this.opacity < 1)  {
++    return true
+   }
+-  var format = 0
+-  if(shape.length === 2) {
+-    format = gl.LUMINANCE
+-    shape = [shape[0], shape[1], 1]
+-    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
+-  } else if(shape.length === 3) {
+-    if(shape[2] === 1) {
+-      format = gl.ALPHA
+-    } else if(shape[2] === 2) {
+-      format = gl.LUMINANCE_ALPHA
+-    } else if(shape[2] === 3) {
+-      format = gl.RGB
+-    } else if(shape[2] === 4) {
+-      format = gl.RGBA
+-    } else {
+-      throw new Error('gl-texture2d: Invalid shape for pixel coords')
++  for(var i=0; i<3; ++i) {
++    if(this.axesProject[i] && this.projectOpacity[i] < 1) {
++      return true
+     }
+-  } else {
+-    throw new Error('gl-texture2d: Invalid shape for texture')
+   }
+-  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
++  return false
++}
++
++proto.isOpaque = function() {
++  if(this.opacity >= 1)  {
++    return true
+   }
+-  var buffer, buf_store
+-  var size = array.size
+-  if(!packed) {
+-    var stride = [shape[2], shape[2]*shape[0], 1]
+-    buf_store = pool.malloc(size, dtype)
+-    var buf_array = ndarray(buf_store, shape, stride, 0)
+-    if((dtype === 'float32' || dtype === 'float64') && type === gl.UNSIGNED_BYTE) {
+-      convertFloatToUint8(buf_array, array)
+-    } else {
+-      ops.assign(buf_array, array)
++  for(var i=0; i<3; ++i) {
++    if(this.axesProject[i] && this.projectOpacity[i] >= 1) {
++      return true
+     }
+-    buffer = buf_store.subarray(0, size)
+-  } else if (array.offset === 0 && array.data.length === size) {
+-    buffer = array.data
+-  } else {
+-    buffer = array.data.subarray(array.offset, array.offset + size)
+-  }
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, shape[0], shape[1], 0, format, type, buffer)
+-  if(!packed) {
+-    pool.free(buf_store)
+   }
+-  return new Texture2D(gl, tex, shape[0], shape[1], format, type)
++  return false
+ }
+ 
+-function createTexture2D(gl) {
+-  if(arguments.length <= 1) {
+-    throw new Error('gl-texture2d: Missing arguments for texture2d constructor')
+-  }
+-  if(!linearTypes) {
+-    lazyInitLinearTypes(gl)
+-  }
+-  if(typeof arguments[1] === 'number') {
+-    return createTextureShape(gl, arguments[1], arguments[2], arguments[3]||gl.RGBA, arguments[4]||gl.UNSIGNED_BYTE)
+-  }
+-  if(Array.isArray(arguments[1])) {
+-    return createTextureShape(gl, arguments[1][0]|0, arguments[1][1]|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
+-  }
+-  if(typeof arguments[1] === 'object') {
+-    var obj = arguments[1]
+-    if(obj instanceof HTMLCanvasElement ||
+-       obj instanceof HTMLImageElement ||
+-       obj instanceof HTMLVideoElement ||
+-       obj instanceof ImageData) {
+-      return createTextureDOM(gl, obj, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
+-    } else if(obj.shape && obj.data && obj.stride) {
+-      return createTextureArray(gl, obj)
++var VIEW_SHAPE = [0,0]
++var U_VEC = [0,0,0]
++var V_VEC = [0,0,0]
++var MU_VEC = [0,0,0,1]
++var MV_VEC = [0,0,0,1]
++var SCRATCH_MATRIX = IDENTITY.slice()
++var SCRATCH_VEC = [0,0,0]
++var CLIP_BOUNDS = [[0,0,0], [0,0,0]]
++
++function zeroVec(a) {
++  a[0] = a[1] = a[2] = 0
++  return a
++}
++
++function augment(hg, af) {
++  hg[0] = af[0]
++  hg[1] = af[1]
++  hg[2] = af[2]
++  hg[3] = 1
++  return hg
++}
++
++function setComponent(out, v, i, x) {
++  out[0] = v[0]
++  out[1] = v[1]
++  out[2] = v[2]
++  out[i] = x
++  return out
++}
++
++function getClipBounds(bounds) {
++  var result = CLIP_BOUNDS
++  for(var i=0; i<2; ++i) {
++    for(var j=0; j<3; ++j) {
++      result[i][j] = Math.max(Math.min(bounds[i][j], 1e8), -1e8)
+     }
+   }
+-  throw new Error('gl-texture2d: Invalid arguments for texture2d constructor')
++  return result
+ }
+ 
+-},{"ndarray":433,"ndarray-ops":432,"typedarray-pool":458}],229:[function(require,module,exports){
+-"use strict"
++function drawProject(shader, points, camera, transparent, forceDraw) {
++  var axesProject = points.axesProject
+ 
+-function doBind(gl, elements, attributes) {
+-  if(elements) {
+-    elements.bind()
++  var gl         = points.gl
++  var uniforms   = shader.uniforms
++  var model      = camera.model      || IDENTITY
++  var view       = camera.view       || IDENTITY
++  var projection = camera.projection || IDENTITY
++  var bounds     = points.axesBounds
++  var clipBounds = getClipBounds(points.clipBounds)
++
++  var cubeAxis
++  if(points.axes) {
++    cubeAxis = points.axes.lastCubeProps.axis
+   } else {
+-    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null)
++    cubeAxis = [1,1,1]
+   }
+-  var nattribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS)|0
+-  if(attributes) {
+-    if(attributes.length > nattribs) {
+-      throw new Error("gl-vao: Too many vertex attributes")
++
++  VIEW_SHAPE[0] = 2.0/gl.drawingBufferWidth
++  VIEW_SHAPE[1] = 2.0/gl.drawingBufferHeight
++
++  shader.bind()
++  uniforms.view           = view
++  uniforms.projection     = projection
++  uniforms.screenSize     = VIEW_SHAPE
++  uniforms.highlightId    = points.highlightId
++  uniforms.highlightScale = points.highlightScale
++  uniforms.clipBounds     = clipBounds
++  uniforms.pickGroup      = points.pickId / 255.0
++  uniforms.pixelRatio     = points.pixelRatio
++
++  for(var i=0; i<3; ++i) {
++    if(!axesProject[i]) {
++      continue
+     }
+-    for(var i=0; i<attributes.length; ++i) {
+-      var attrib = attributes[i]
+-      if(attrib.buffer) {
+-        var buffer = attrib.buffer
+-        var size = attrib.size || 4
+-        var type = attrib.type || gl.FLOAT
+-        var normalized = !!attrib.normalized
+-        var stride = attrib.stride || 0
+-        var offset = attrib.offset || 0
+-        buffer.bind()
+-        gl.enableVertexAttribArray(i)
+-        gl.vertexAttribPointer(i, size, type, normalized, stride, offset)
+-      } else {
+-        if(typeof attrib === "number") {
+-          gl.vertexAttrib1f(i, attrib)
+-        } else if(attrib.length === 1) {
+-          gl.vertexAttrib1f(i, attrib[0])
+-        } else if(attrib.length === 2) {
+-          gl.vertexAttrib2f(i, attrib[0], attrib[1])
+-        } else if(attrib.length === 3) {
+-          gl.vertexAttrib3f(i, attrib[0], attrib[1], attrib[2])
+-        } else if(attrib.length === 4) {
+-          gl.vertexAttrib4f(i, attrib[0], attrib[1], attrib[2], attrib[3])
+-        } else {
+-          throw new Error("gl-vao: Invalid vertex attribute")
+-        }
+-        gl.disableVertexAttribArray(i)
+-      }
++    if((points.projectOpacity[i] < 1) !== transparent) {
++      continue
+     }
+-    for(; i<nattribs; ++i) {
+-      gl.disableVertexAttribArray(i)
++
++    uniforms.scale          = points.projectScale[i]
++    uniforms.opacity        = points.projectOpacity[i]
++
++    //Project model matrix
++    var pmodel = SCRATCH_MATRIX
++    for(var j=0; j<16; ++j) {
++      pmodel[j] = 0
+     }
+-  } else {
+-    gl.bindBuffer(gl.ARRAY_BUFFER, null)
+-    for(var i=0; i<nattribs; ++i) {
+-      gl.disableVertexAttribArray(i)
++    for(var j=0; j<4; ++j) {
++      pmodel[5*j] = 1
++    }
++    pmodel[5*i] = 0
++    if(cubeAxis[i] < 0) {
++      pmodel[12+i] = bounds[0][i]
++    } else {
++      pmodel[12+i] = bounds[1][i]
++    }
++    mat4mult(pmodel, model, pmodel)
++    uniforms.model = pmodel
++
++    //Compute initial axes
++    var u = (i+1)%3
++    var v = (i+2)%3
++    var du = zeroVec(U_VEC)
++    var dv = zeroVec(V_VEC)
++    du[u] = 1
++    dv[v] = 1
++
++    //Align orientation relative to viewer
++    var mdu = project(projection, view, model, augment(MU_VEC, du))
++    var mdv = project(projection, view, model, augment(MV_VEC, dv))
++    if(Math.abs(mdu[1]) > Math.abs(mdv[1])) {
++      var tmp = mdu
++      mdu = mdv
++      mdv = tmp
++      tmp = du
++      du = dv
++      dv = tmp
++      var t = u
++      u = v
++      v = t
++    }
++    if(mdu[0] < 0) {
++      du[u] = -1
++    }
++    if(mdv[1] > 0) {
++      dv[v] = -1
++    }
++    var su = 0.0
++    var sv = 0.0
++    for(var j=0; j<4; ++j) {
++      su += Math.pow(model[4*u+j], 2)
++      sv += Math.pow(model[4*v+j], 2)
++    }
++    du[u] /= Math.sqrt(su)
++    dv[v] /= Math.sqrt(sv)
++    uniforms.axes[0] = du
++    uniforms.axes[1] = dv
++
++    //Update fragment clip bounds
++    uniforms.fragClipBounds[0] = setComponent(SCRATCH_VEC, clipBounds[0], i, -1e8)
++    uniforms.fragClipBounds[1] = setComponent(SCRATCH_VEC, clipBounds[1], i, 1e8)
++
++    //Draw interior
++    points.vao.draw(gl.TRIANGLES, points.vertexCount)
++
++    //Draw edges
++    if(points.lineWidth > 0) {
++      gl.lineWidth(points.lineWidth)
++      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
+     }
+   }
+ }
+ 
+-module.exports = doBind
+-},{}],230:[function(require,module,exports){
+-"use strict"
+ 
+-var bindAttribs = require("./do-bind.js")
++var NEG_INFINITY3 = [-1e8, -1e8, -1e8]
++var POS_INFINITY3 = [1e8, 1e8, 1e8]
++var CLIP_GROUP    = [NEG_INFINITY3, POS_INFINITY3]
+ 
+-function VAOEmulated(gl) {
+-  this.gl = gl
+-  this._elements = null
+-  this._attributes = null
+-  this._elementsType = gl.UNSIGNED_SHORT
+-}
++function drawFull(shader, pshader, points, camera, transparent, forceDraw) {
++  var gl = points.gl
+ 
+-VAOEmulated.prototype.bind = function() {
+-  bindAttribs(this.gl, this._elements, this._attributes)
+-}
++  points.vao.bind()
+ 
+-VAOEmulated.prototype.update = function(attributes, elements, elementsType) {
+-  this._elements = elements
+-  this._attributes = attributes
+-  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
+-}
++  if(transparent === (points.opacity < 1) || forceDraw) {
++    shader.bind()
++    var uniforms = shader.uniforms
+ 
+-VAOEmulated.prototype.dispose = function() { }
+-VAOEmulated.prototype.unbind = function() { }
++    uniforms.model      = camera.model      || IDENTITY
++    uniforms.view       = camera.view       || IDENTITY
++    uniforms.projection = camera.projection || IDENTITY
+ 
+-VAOEmulated.prototype.draw = function(mode, count, offset) {
+-  offset = offset || 0
+-  var gl = this.gl
+-  if(this._elements) {
+-    gl.drawElements(mode, count, this._elementsType, offset)
+-  } else {
+-    gl.drawArrays(mode, offset, count)
++    VIEW_SHAPE[0]       = 2.0/gl.drawingBufferWidth
++    VIEW_SHAPE[1]       = 2.0/gl.drawingBufferHeight
++    uniforms.screenSize = VIEW_SHAPE
++
++    uniforms.highlightId    = points.highlightId
++    uniforms.highlightScale = points.highlightScale
++
++    uniforms.fragClipBounds = CLIP_GROUP
++    uniforms.clipBounds     = points.axes.bounds
++
++    uniforms.opacity    = points.opacity
++    uniforms.pickGroup  = points.pickId / 255.0
++
++    uniforms.pixelRatio = points.pixelRatio
++
++    //Draw interior
++    points.vao.draw(gl.TRIANGLES, points.vertexCount)
++
++    //Draw edges
++    if(points.lineWidth > 0) {
++      gl.lineWidth(points.lineWidth)
++      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
++    }
+   }
+-}
+ 
+-function createVAOEmulated(gl) {
+-  return new VAOEmulated(gl)
++  drawProject(pshader, points, camera, transparent, forceDraw)
++
++  points.vao.unbind()
+ }
+ 
+-module.exports = createVAOEmulated
+-},{"./do-bind.js":229}],231:[function(require,module,exports){
+-"use strict"
++proto.draw = function(camera) {
++  var shader = this.useOrtho ? this.orthoShader : this.shader
++  drawFull(shader, this.projectShader, this, camera, false, false)
++}
+ 
+-var bindAttribs = require("./do-bind.js")
++proto.drawTransparent = function(camera) {
++  var shader = this.useOrtho ? this.orthoShader : this.shader
++  drawFull(shader, this.projectShader, this, camera, true, false)
++}
+ 
+-function VertexAttribute(location, dimension, a, b, c, d) {
+-  this.location = location
+-  this.dimension = dimension
+-  this.a = a
+-  this.b = b
+-  this.c = c
+-  this.d = d
++proto.drawPick = function(camera) {
++  var shader = this.useOrtho ? this.pickOrthoShader : this.pickPerspectiveShader
++  drawFull(shader, this.pickProjectShader, this, camera, false, true)
+ }
+ 
+-VertexAttribute.prototype.bind = function(gl) {
+-  switch(this.dimension) {
+-    case 1:
+-      gl.vertexAttrib1f(this.location, this.a)
+-    break
+-    case 2:
+-      gl.vertexAttrib2f(this.location, this.a, this.b)
+-    break
+-    case 3:
+-      gl.vertexAttrib3f(this.location, this.a, this.b, this.c)
+-    break
+-    case 4:
+-      gl.vertexAttrib4f(this.location, this.a, this.b, this.c, this.d)
+-    break
++proto.pick = function(selected) {
++  if(!selected) {
++    return null
++  }
++  if(selected.id !== this.pickId) {
++    return null
++  }
++  var x = selected.value[2] + (selected.value[1]<<8) + (selected.value[0]<<16)
++  if(x >= this.pointCount || x < 0) {
++    return null
+   }
+-}
+ 
+-function VAONative(gl, ext, handle) {
+-  this.gl = gl
+-  this._ext = ext
+-  this.handle = handle
+-  this._attribs = []
+-  this._useElements = false
+-  this._elementsType = gl.UNSIGNED_SHORT
++  //Unpack result
++  var coord = this.points[x]
++  var result = this._selectResult
++  result.index = x
++  for(var i=0; i<3; ++i) {
++    result.position[i] = result.dataCoordinate[i] = coord[i]
++  }
++  return result
+ }
+ 
+-VAONative.prototype.bind = function() {
+-  this._ext.bindVertexArrayOES(this.handle)
+-  for(var i=0; i<this._attribs.length; ++i) {
+-    this._attribs[i].bind(this.gl)
++proto.highlight = function(selection) {
++  if(!selection) {
++    this.highlightId = [1,1,1,1]
++  } else {
++    var pointId = selection.index
++    var a0 =  pointId     &0xff
++    var a1 = (pointId>>8) &0xff
++    var a2 = (pointId>>16)&0xff
++    this.highlightId = [a0/255.0, a1/255.0, a2/255.0, 0]
+   }
+ }
+ 
+-VAONative.prototype.unbind = function() {
+-  this._ext.bindVertexArrayOES(null)
+-}
++proto.update = function(options) {
+ 
+-VAONative.prototype.dispose = function() {
+-  this._ext.deleteVertexArrayOES(this.handle)
+-}
++  options = options || {}
+ 
+-VAONative.prototype.update = function(attributes, elements, elementsType) {
+-  this.bind()
+-  bindAttribs(this.gl, elements, attributes)
+-  this.unbind()
+-  this._attribs.length = 0
+-  if(attributes)
+-  for(var i=0; i<attributes.length; ++i) {
+-    var a = attributes[i]
+-    if(typeof a === "number") {
+-      this._attribs.push(new VertexAttribute(i, 1, a))
+-    } else if(Array.isArray(a)) {
+-      this._attribs.push(new VertexAttribute(i, a.length, a[0], a[1], a[2], a[3]))
++  if('perspective' in options) {
++    this.useOrtho = !options.perspective
++  }
++  if('orthographic' in options) {
++    this.useOrtho = !!options.orthographic
++  }
++  if('lineWidth' in options) {
++    this.lineWidth = options.lineWidth
++  }
++  if('project' in options) {
++    if(Array.isArray(options.project)) {
++      this.axesProject = options.project
++    } else {
++      var v = !!options.project
++      this.axesProject = [v,v,v]
++    }
++  }
++  if('projectScale' in options) {
++    if(Array.isArray(options.projectScale)) {
++      this.projectScale = options.projectScale.slice()
++    } else {
++      var s = +options.projectScale
++      this.projectScale = [s,s,s]
+     }
+   }
+-  this._useElements = !!elements
+-  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
+-}
+-
+-VAONative.prototype.draw = function(mode, count, offset) {
+-  offset = offset || 0
+-  var gl = this.gl
+-  if(this._useElements) {
+-    gl.drawElements(mode, count, this._elementsType, offset)
+-  } else {
+-    gl.drawArrays(mode, offset, count)
++  if('projectOpacity' in options) {
++    if(Array.isArray(options.projectOpacity)) {
++      this.projectOpacity = options.projectOpacity.slice()
++    } else {
++      var s = +options.projectOpacity
++      this.projectOpacity = [s,s,s]
++    }
++  }
++  if('opacity' in options) {
++    this.opacity = options.opacity
+   }
+-}
+-
+-function createVAONative(gl, ext) {
+-  return new VAONative(gl, ext, ext.createVertexArrayOES())
+-}
+-
+-module.exports = createVAONative
+-},{"./do-bind.js":229}],232:[function(require,module,exports){
+-"use strict"
+ 
+-var createVAONative = require("./lib/vao-native.js")
+-var createVAOEmulated = require("./lib/vao-emulated.js")
++  //Set dirty flag
++  this.dirty = true
+ 
+-function createVAO(gl, attributes, elements, elementsType) {
+-  var ext = gl.getExtension('OES_vertex_array_object')
+-  var vao
+-  if(ext) {
+-    vao = createVAONative(gl, ext)
+-  } else {
+-    vao = createVAOEmulated(gl)
++  //Create new buffers
++  var points = options.position
++  if(!points) {
++    return
+   }
+-  vao.update(attributes, elements, elementsType)
+-  return vao
+-}
+ 
+-module.exports = createVAO
++  //Text font
++  var font      = options.font      || 'normal'
++  var alignment = options.alignment || [0,0]
+ 
+-},{"./lib/vao-emulated.js":230,"./lib/vao-native.js":231}],233:[function(require,module,exports){
+-module.exports = transformMat4
++  //Bounds
++  var lowerBound = [ Infinity, Infinity, Infinity]
++  var upperBound = [-Infinity,-Infinity,-Infinity]
+ 
+-/**
+- * Transforms the vec4 with a mat4.
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec4} out
+- */
+-function transformMat4 (out, a, m) {
+-  var x = a[0], y = a[1], z = a[2], w = a[3]
+-  out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w
+-  out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w
+-  out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w
+-  out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w
+-  return out
+-}
++  //Unpack options
++  var glyphs     = options.glyph
++  var colors     = options.color
++  var sizes      = options.size
++  var angles     = options.angle
++  var lineColors = options.lineColor
+ 
+-},{}],234:[function(require,module,exports){
+-module.exports = tokenize
++  //Picking geometry
++  var pickCounter = 0
+ 
+-var literals100 = require('./lib/literals')
+-  , operators = require('./lib/operators')
+-  , builtins100 = require('./lib/builtins')
+-  , literals300es = require('./lib/literals-300es')
+-  , builtins300es = require('./lib/builtins-300es')
++  //First do pass to compute buffer sizes
++  var triVertexCount     = 0
++  var lineVertexCount = 0
+ 
+-var NORMAL = 999          // <-- never emitted
+-  , TOKEN = 9999          // <-- never emitted
+-  , BLOCK_COMMENT = 0
+-  , LINE_COMMENT = 1
+-  , PREPROCESSOR = 2
+-  , OPERATOR = 3
+-  , INTEGER = 4
+-  , FLOAT = 5
+-  , IDENT = 6
+-  , BUILTIN = 7
+-  , KEYWORD = 8
+-  , WHITESPACE = 9
+-  , EOF = 10
+-  , HEX = 11
++  //Count number of points and buffer size
++  var numPoints   = points.length
+ 
+-var map = [
+-    'block-comment'
+-  , 'line-comment'
+-  , 'preprocessor'
+-  , 'operator'
+-  , 'integer'
+-  , 'float'
+-  , 'ident'
+-  , 'builtin'
+-  , 'keyword'
+-  , 'whitespace'
+-  , 'eof'
+-  , 'integer'
+-]
++count_loop:
++  for(var i=0; i<numPoints; ++i) {
++    var x = points[i]
++    for(var j=0; j<3; ++j) {
++      if(isNaN(x[j]) || !isFinite(x[j])) {
++        continue count_loop
++      }
++    }
+ 
+-function tokenize(opt) {
+-  var i = 0
+-    , total = 0
+-    , mode = NORMAL
+-    , c
+-    , last
+-    , content = []
+-    , tokens = []
+-    , token_idx = 0
+-    , token_offs = 0
+-    , line = 1
+-    , col = 0
+-    , start = 0
+-    , isnum = false
+-    , isoperator = false
+-    , input = ''
+-    , len
++    var glyphData
++    if(Array.isArray(glyphs)) {
++      glyphData = getGlyph(glyphs[i], font)
++    } else if(glyphs) {
++      glyphData = getGlyph(glyphs, font)
++    } else {
++      glyphData = getGlyph('●', font)
++    }
++    var glyphMesh   = glyphData[0]
++    var glyphLines  = glyphData[1]
++    var glyphBounds = glyphData[2]
+ 
+-  opt = opt || {}
+-  var allBuiltins = builtins100
+-  var allLiterals = literals100
+-  if (opt.version === '300 es') {
+-    allBuiltins = builtins300es
+-    allLiterals = literals300es
++    triVertexCount  += glyphMesh.cells.length * 3
++    lineVertexCount += glyphLines.edges.length * 2
+   }
+ 
+-  return function(data) {
+-    tokens = []
+-    if (data !== null) return write(data)
+-    return end()
+-  }
+ 
+-  function token(data) {
+-    if (data.length) {
+-      tokens.push({
+-        type: map[mode]
+-      , data: data
+-      , position: start
+-      , line: line
+-      , column: col
+-      })
+-    }
+-  }
++  //Preallocate data
++  var vertexCount   = triVertexCount + lineVertexCount
++  var positionArray = pool.mallocFloat(3*vertexCount)
++  var colorArray    = pool.mallocFloat(4*vertexCount)
++  var glyphArray    = pool.mallocFloat(2*vertexCount)
++  var idArray       = pool.mallocUint32(vertexCount)
+ 
+-  function write(chunk) {
+-    i = 0
+-    input += chunk
+-    len = input.length
++  var textOffset = [0,alignment[1]]
+ 
+-    var last
++  var triOffset  = 0
++  var lineOffset = triVertexCount
++  var color      = [0,0,0,1]
++  var lineColor  = [0,0,0,1]
+ 
+-    while(c = input[i], i < len) {
+-      last = i
++  var isColorArray      = Array.isArray(colors)     && Array.isArray(colors[0])
++  var isLineColorArray  = Array.isArray(lineColors) && Array.isArray(lineColors[0])
+ 
+-      switch(mode) {
+-        case BLOCK_COMMENT: i = block_comment(); break
+-        case LINE_COMMENT: i = line_comment(); break
+-        case PREPROCESSOR: i = preprocessor(); break
+-        case OPERATOR: i = operator(); break
+-        case INTEGER: i = integer(); break
+-        case HEX: i = hex(); break
+-        case FLOAT: i = decimal(); break
+-        case TOKEN: i = readtoken(); break
+-        case WHITESPACE: i = whitespace(); break
+-        case NORMAL: i = normal(); break
++fill_loop:
++  for(var i=0; i<numPoints; ++i) {
++    var x = points[i]
++    for(var j=0; j<3; ++j) {
++      if(isNaN(x[j]) || !isFinite(x[j])) {
++        pickCounter += 1
++        continue fill_loop
+       }
+ 
+-      if(last !== i) {
+-        switch(input[last]) {
+-          case '\n': col = 0; ++line; break
+-          default: ++col; break
+-        }
+-      }
++      upperBound[j] = Math.max(upperBound[j], x[j])
++      lowerBound[j] = Math.min(lowerBound[j], x[j])
+     }
+ 
+-    total += i
+-    input = input.slice(i)
+-    return tokens
+-  }
+-
+-  function end(chunk) {
+-    if(content.length) {
+-      token(content.join(''))
++    var glyphData
++    if(Array.isArray(glyphs)) {
++      glyphData = getGlyph(glyphs[i], font)
++    } else if(glyphs) {
++      glyphData = getGlyph(glyphs, font)
++    } else {
++      glyphData = getGlyph('●', font)
+     }
++    var glyphMesh   = glyphData[0]
++    var glyphLines  = glyphData[1]
++    var glyphBounds = glyphData[2]
+ 
+-    mode = EOF
+-    token('(eof)')
+-    return tokens
+-  }
+-
+-  function normal() {
+-    content = content.length ? [] : content
+ 
+-    if(last === '/' && c === '*') {
+-      start = total + i - 1
+-      mode = BLOCK_COMMENT
+-      last = c
+-      return i + 1
++    //Get color
++    if(Array.isArray(colors)) {
++      var c
++      if(isColorArray) {
++        c = colors[i]
++      } else {
++        c = colors
++      }
++      if(c.length === 3) {
++        for(var j=0; j<3; ++j) {
++          color[j] = c[j]
++        }
++        color[3] = 1
++      } else if(c.length === 4) {
++        for(var j=0; j<4; ++j) {
++          color[j] = c[j]
++        }
++      }
++    } else {
++      color[0] = color[1] = color[2] = 0
++      color[3] = 1
+     }
+ 
+-    if(last === '/' && c === '/') {
+-      start = total + i - 1
+-      mode = LINE_COMMENT
+-      last = c
+-      return i + 1
++    //Get lineColor
++    if(Array.isArray(lineColors)) {
++      var c
++      if(isLineColorArray) {
++        c = lineColors[i]
++      } else {
++        c = lineColors
++      }
++      if(c.length === 3) {
++        for(var j=0; j<3; ++j) {
++          lineColor[j] = c[j]
++        }
++        lineColor[j] = 1
++      } else if(c.length === 4) {
++        for(var j=0; j<4; ++j) {
++          lineColor[j] = c[j]
++        }
++      }
++    } else {
++      lineColor[0] = lineColor[1] = lineColor[2] = 0
++      lineColor[3] = 1
+     }
+ 
+-    if(c === '#') {
+-      mode = PREPROCESSOR
+-      start = total + i
+-      return i
++    var size = 0.5
++    if(Array.isArray(sizes)) {
++      size = +sizes[i]
++    } else if(sizes) {
++      size = +sizes
++    } else if(this.useOrtho) {
++      size = 12
+     }
+ 
+-    if(/\s/.test(c)) {
+-      mode = WHITESPACE
+-      start = total + i
+-      return i
++    var angle = 0
++    if(Array.isArray(angles)) {
++      angle = +angles[i]
++    } else if(angles) {
++      angle = +angles
+     }
+ 
+-    isnum = /\d/.test(c)
+-    isoperator = /[^\w_]/.test(c)
++    //Loop through markers and append to buffers
++    var cos = Math.cos(angle)
++    var sin = Math.sin(angle)
+ 
+-    start = total + i
+-    mode = isnum ? INTEGER : isoperator ? OPERATOR : TOKEN
+-    return i
+-  }
++    var x = points[i]
++    for(var j=0; j<3; ++j) {
++      upperBound[j] = Math.max(upperBound[j], x[j])
++      lowerBound[j] = Math.min(lowerBound[j], x[j])
++    }
+ 
+-  function whitespace() {
+-    if(/[^\s]/g.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
++    //Calculate text offset
++    if(alignment[0] < 0) {
++      textOffset[0] = alignment[0]  * (1+glyphBounds[1][0])
++    } else if(alignment[0] > 0) {
++      textOffset[0] = -alignment[0] * (1+glyphBounds[0][0])
+     }
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
+ 
+-  function preprocessor() {
+-    if(c === '\n' && last !== '\\') {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
++    //Write out inner marker
++    var cells = glyphMesh.cells
++    var verts = glyphMesh.positions
++
++    for(var j=0; j<cells.length; ++j) {
++      var cell = cells[j]
++      for(var k=0; k<3; ++k) {
++        for(var l=0; l<3; ++l) {
++          positionArray[3*triOffset+l] = x[l]
++        }
++        for(var l=0; l<4; ++l) {
++          colorArray[4*triOffset+l] = color[l]
++        }
++        idArray[triOffset] = pickCounter
++        var p = verts[cell[k]]
++        glyphArray[2*triOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
++        glyphArray[2*triOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
++        triOffset += 1
++      }
+     }
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
+ 
+-  function line_comment() {
+-    return preprocessor()
+-  }
++    var cells = glyphLines.edges
++    var verts = glyphLines.positions
+ 
+-  function block_comment() {
+-    if(c === '/' && last === '*') {
+-      content.push(c)
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i + 1
++    for(var j=0; j<cells.length; ++j) {
++      var cell = cells[j]
++      for(var k=0; k<2; ++k) {
++        for(var l=0; l<3; ++l) {
++          positionArray[3*lineOffset+l] = x[l]
++        }
++        for(var l=0; l<4; ++l) {
++          colorArray[4*lineOffset+l] = lineColor[l]
++        }
++        idArray[lineOffset] = pickCounter
++        var p = verts[cell[k]]
++        glyphArray[2*lineOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
++        glyphArray[2*lineOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
++        lineOffset += 1
++      }
+     }
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
++    //Increment pickCounter
++    pickCounter += 1
+   }
+ 
+-  function operator() {
+-    if(last === '.' && /\d/.test(c)) {
+-      mode = FLOAT
+-      return i
+-    }
+ 
+-    if(last === '/' && c === '*') {
+-      mode = BLOCK_COMMENT
+-      return i
+-    }
++  //Update vertex counts
++  this.vertexCount      = triVertexCount
++  this.lineVertexCount  = lineVertexCount
+ 
+-    if(last === '/' && c === '/') {
+-      mode = LINE_COMMENT
+-      return i
++  //Update buffers
++  this.pointBuffer.update(positionArray)
++  this.colorBuffer.update(colorArray)
++  this.glyphBuffer.update(glyphArray)
++  this.idBuffer.update(new Uint32Array(idArray))
++
++  pool.free(positionArray)
++  pool.free(colorArray)
++  pool.free(glyphArray)
++  pool.free(idArray)
++
++  //Update bounds
++  this.bounds = [lowerBound, upperBound]
++
++  //Save points
++  this.points = points
++
++  //Save number of points
++  this.pointCount = points.length
++}
++
++proto.dispose = function() {
++  //Shaders
++  this.shader.dispose()
++  this.orthoShader.dispose()
++  this.pickPerspectiveShader.dispose()
++  this.pickOrthoShader.dispose()
++
++  //Vertex array
++  this.vao.dispose()
++
++  //Buffers
++  this.pointBuffer.dispose()
++  this.colorBuffer.dispose()
++  this.glyphBuffer.dispose()
++  this.idBuffer.dispose()
++}
++
++function createPointCloud(options) {
++  var gl = options.gl
++
++  var shader                = shaders.createPerspective(gl)
++  var orthoShader           = shaders.createOrtho(gl)
++  var projectShader         = shaders.createProject(gl)
++  var pickPerspectiveShader = shaders.createPickPerspective(gl)
++  var pickOrthoShader       = shaders.createPickOrtho(gl)
++  var pickProjectShader     = shaders.createPickProject(gl)
++
++  var pointBuffer = createBuffer(gl)
++  var colorBuffer = createBuffer(gl)
++  var glyphBuffer = createBuffer(gl)
++  var idBuffer    = createBuffer(gl)
++  var vao = createVAO(gl, [
++    {
++      buffer: pointBuffer,
++      size: 3,
++      type: gl.FLOAT
++    },
++    {
++      buffer: colorBuffer,
++      size: 4,
++      type: gl.FLOAT
++    },
++    {
++      buffer: glyphBuffer,
++      size: 2,
++      type: gl.FLOAT
++    },
++    {
++      buffer: idBuffer,
++      size: 4,
++      type: gl.UNSIGNED_BYTE,
++      normalized: true
+     }
++  ])
+ 
+-    if(c === '.' && content.length) {
+-      while(determine_operator(content));
++  var pointCloud = new PointCloud(
++    gl,
++    shader,
++    orthoShader,
++    projectShader,
++    pointBuffer,
++    colorBuffer,
++    glyphBuffer,
++    idBuffer,
++    vao,
++    pickPerspectiveShader,
++    pickOrthoShader,
++    pickProjectShader)
+ 
+-      mode = FLOAT
+-      return i
+-    }
++  pointCloud.update(options)
+ 
+-    if(c === ';' || c === ')' || c === '(') {
+-      if(content.length) while(determine_operator(content));
+-      token(c)
+-      mode = NORMAL
+-      return i + 1
+-    }
++  return pointCloud
++}
+ 
+-    var is_composite_operator = content.length === 2 && c !== '='
+-    if(/[\w_\d\s]/.test(c) || is_composite_operator) {
+-      while(determine_operator(content));
+-      mode = NORMAL
+-      return i
+-    }
++},{"./lib/glyphs":184,"./lib/shaders":185,"gl-buffer":121,"gl-mat4/multiply":144,"gl-vao":206,"typedarray-pool":449}],187:[function(require,module,exports){
++'use strict'
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
+ 
+-  function determine_operator(buf) {
+-    var j = 0
+-      , idx
+-      , res
+ 
+-    do {
+-      idx = operators.indexOf(buf.slice(0, buf.length + j).join(''))
+-      res = operators[idx]
++exports.boxVertex = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n"
++exports.boxFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"
+ 
+-      if(idx === -1) {
+-        if(j-- + buf.length > 0) continue
+-        res = buf.slice(0, 1).join('')
+-      }
++},{}],188:[function(require,module,exports){
++'use strict'
+ 
+-      token(res)
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
+ 
+-      start += res.length
+-      content = content.slice(res.length)
+-      return content.length
+-    } while(1)
+-  }
++var SHADERS = require('./lib/shaders')
+ 
+-  function hex() {
+-    if(/[^a-fA-F0-9]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
++module.exports = createSelectBox
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
++function SelectBox(plot, boxBuffer, boxShader) {
++  this.plot = plot
++  this.boxBuffer = boxBuffer
++  this.boxShader = boxShader
+ 
+-  function integer() {
+-    if(c === '.') {
+-      content.push(c)
+-      mode = FLOAT
+-      last = c
+-      return i + 1
+-    }
++  this.enabled = true
+ 
+-    if(/[eE]/.test(c)) {
+-      content.push(c)
+-      mode = FLOAT
+-      last = c
+-      return i + 1
+-    }
++  this.selectBox = [Infinity,Infinity,-Infinity,-Infinity]
+ 
+-    if(c === 'x' && content.length === 1 && content[0] === '0') {
+-      mode = HEX
+-      content.push(c)
+-      last = c
+-      return i + 1
+-    }
++  this.borderColor = [0,0,0,1]
++  this.innerFill   = false
++  this.innerColor  = [0,0,0,0.25]
++  this.outerFill   = true
++  this.outerColor  = [0,0,0,0.5]
++  this.borderWidth = 10
++}
+ 
+-    if(/[^\d]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
++var proto = SelectBox.prototype
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
++proto.draw = function() {
++  if(!this.enabled) {
++    return
+   }
+ 
+-  function decimal() {
+-    if(c === 'f') {
+-      content.push(c)
+-      last = c
+-      i += 1
+-    }
++  var plot         = this.plot
++  var selectBox    = this.selectBox
++  var lineWidth    = this.borderWidth
+ 
+-    if(/[eE]/.test(c)) {
+-      content.push(c)
+-      last = c
+-      return i + 1
+-    }
++  var innerFill    = this.innerFill
++  var innerColor   = this.innerColor
++  var outerFill    = this.outerFill
++  var outerColor   = this.outerColor
++  var borderColor  = this.borderColor
+ 
+-    if (c === '-' && /[eE]/.test(last)) {
+-      content.push(c)
+-      last = c
+-      return i + 1
+-    }
++  var boxes        = plot.box
++  var screenBox    = plot.screenBox
++  var dataBox      = plot.dataBox
++  var viewBox      = plot.viewBox
++  var pixelRatio   = plot.pixelRatio
+ 
+-    if(/[^\d]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
++  //Map select box into pixel coordinates
++  var loX = (selectBox[0]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
++  var loY = (selectBox[1]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
++  var hiX = (selectBox[2]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
++  var hiY = (selectBox[3]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
++  loX = Math.max(loX, viewBox[0])
++  loY = Math.max(loY, viewBox[1])
++  hiX = Math.min(hiX, viewBox[2])
++  hiY = Math.min(hiY, viewBox[3])
+ 
+-  function readtoken() {
+-    if(/[^\d\w_]/.test(c)) {
+-      var contentstr = content.join('')
+-      if(allLiterals.indexOf(contentstr) > -1) {
+-        mode = KEYWORD
+-      } else if(allBuiltins.indexOf(contentstr) > -1) {
+-        mode = BUILTIN
+-      } else {
+-        mode = IDENT
+-      }
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
+-    content.push(c)
+-    last = c
+-    return i + 1
++  if(hiX < loX || hiY < loY) {
++    return
+   }
+-}
+ 
+-},{"./lib/builtins":236,"./lib/builtins-300es":235,"./lib/literals":238,"./lib/literals-300es":237,"./lib/operators":239}],235:[function(require,module,exports){
+-// 300es builtins/reserved words that were previously valid in v100
+-var v100 = require('./builtins')
++  boxes.bind()
+ 
+-// The texture2D|Cube functions have been removed
+-// And the gl_ features are updated
+-v100 = v100.slice().filter(function (b) {
+-  return !/^(gl\_|texture)/.test(b)
+-})
++  //Draw box
++  var screenWidth  = screenBox[2] - screenBox[0]
++  var screenHeight = screenBox[3] - screenBox[1]
+ 
+-module.exports = v100.concat([
+-  // the updated gl_ constants
+-    'gl_VertexID'
+-  , 'gl_InstanceID'
+-  , 'gl_Position'
+-  , 'gl_PointSize'
+-  , 'gl_FragCoord'
+-  , 'gl_FrontFacing'
+-  , 'gl_FragDepth'
+-  , 'gl_PointCoord'
+-  , 'gl_MaxVertexAttribs'
+-  , 'gl_MaxVertexUniformVectors'
+-  , 'gl_MaxVertexOutputVectors'
+-  , 'gl_MaxFragmentInputVectors'
+-  , 'gl_MaxVertexTextureImageUnits'
+-  , 'gl_MaxCombinedTextureImageUnits'
+-  , 'gl_MaxTextureImageUnits'
+-  , 'gl_MaxFragmentUniformVectors'
+-  , 'gl_MaxDrawBuffers'
+-  , 'gl_MinProgramTexelOffset'
+-  , 'gl_MaxProgramTexelOffset'
+-  , 'gl_DepthRangeParameters'
+-  , 'gl_DepthRange'
++  if(this.outerFill) {
++    boxes.drawBox(0, 0, screenWidth, loY, outerColor)
++    boxes.drawBox(0, loY, loX, hiY, outerColor)
++    boxes.drawBox(0, hiY, screenWidth, screenHeight, outerColor)
++    boxes.drawBox(hiX, loY, screenWidth, hiY, outerColor)
++  }
+ 
+-  // other builtins
+-  , 'trunc'
+-  , 'round'
+-  , 'roundEven'
+-  , 'isnan'
+-  , 'isinf'
+-  , 'floatBitsToInt'
+-  , 'floatBitsToUint'
+-  , 'intBitsToFloat'
+-  , 'uintBitsToFloat'
+-  , 'packSnorm2x16'
+-  , 'unpackSnorm2x16'
+-  , 'packUnorm2x16'
+-  , 'unpackUnorm2x16'
+-  , 'packHalf2x16'
+-  , 'unpackHalf2x16'
+-  , 'outerProduct'
+-  , 'transpose'
+-  , 'determinant'
+-  , 'inverse'
+-  , 'texture'
+-  , 'textureSize'
+-  , 'textureProj'
+-  , 'textureLod'
+-  , 'textureOffset'
+-  , 'texelFetch'
+-  , 'texelFetchOffset'
+-  , 'textureProjOffset'
+-  , 'textureLodOffset'
+-  , 'textureProjLod'
+-  , 'textureProjLodOffset'
+-  , 'textureGrad'
+-  , 'textureGradOffset'
+-  , 'textureProjGrad'
+-  , 'textureProjGradOffset'
+-])
++  if(this.innerFill) {
++    boxes.drawBox(loX, loY, hiX, hiY, innerColor)
++  }
+ 
+-},{"./builtins":236}],236:[function(require,module,exports){
+-module.exports = [
+-  // Keep this list sorted
+-  'abs'
+-  , 'acos'
+-  , 'all'
+-  , 'any'
+-  , 'asin'
+-  , 'atan'
+-  , 'ceil'
+-  , 'clamp'
+-  , 'cos'
+-  , 'cross'
+-  , 'dFdx'
+-  , 'dFdy'
+-  , 'degrees'
+-  , 'distance'
+-  , 'dot'
+-  , 'equal'
+-  , 'exp'
+-  , 'exp2'
+-  , 'faceforward'
+-  , 'floor'
+-  , 'fract'
+-  , 'gl_BackColor'
+-  , 'gl_BackLightModelProduct'
+-  , 'gl_BackLightProduct'
+-  , 'gl_BackMaterial'
+-  , 'gl_BackSecondaryColor'
+-  , 'gl_ClipPlane'
+-  , 'gl_ClipVertex'
+-  , 'gl_Color'
+-  , 'gl_DepthRange'
+-  , 'gl_DepthRangeParameters'
+-  , 'gl_EyePlaneQ'
+-  , 'gl_EyePlaneR'
+-  , 'gl_EyePlaneS'
+-  , 'gl_EyePlaneT'
+-  , 'gl_Fog'
+-  , 'gl_FogCoord'
+-  , 'gl_FogFragCoord'
+-  , 'gl_FogParameters'
+-  , 'gl_FragColor'
+-  , 'gl_FragCoord'
+-  , 'gl_FragData'
+-  , 'gl_FragDepth'
+-  , 'gl_FragDepthEXT'
+-  , 'gl_FrontColor'
+-  , 'gl_FrontFacing'
+-  , 'gl_FrontLightModelProduct'
+-  , 'gl_FrontLightProduct'
+-  , 'gl_FrontMaterial'
+-  , 'gl_FrontSecondaryColor'
+-  , 'gl_LightModel'
+-  , 'gl_LightModelParameters'
+-  , 'gl_LightModelProducts'
+-  , 'gl_LightProducts'
+-  , 'gl_LightSource'
+-  , 'gl_LightSourceParameters'
+-  , 'gl_MaterialParameters'
+-  , 'gl_MaxClipPlanes'
+-  , 'gl_MaxCombinedTextureImageUnits'
+-  , 'gl_MaxDrawBuffers'
+-  , 'gl_MaxFragmentUniformComponents'
+-  , 'gl_MaxLights'
+-  , 'gl_MaxTextureCoords'
+-  , 'gl_MaxTextureImageUnits'
+-  , 'gl_MaxTextureUnits'
+-  , 'gl_MaxVaryingFloats'
+-  , 'gl_MaxVertexAttribs'
+-  , 'gl_MaxVertexTextureImageUnits'
+-  , 'gl_MaxVertexUniformComponents'
+-  , 'gl_ModelViewMatrix'
+-  , 'gl_ModelViewMatrixInverse'
+-  , 'gl_ModelViewMatrixInverseTranspose'
+-  , 'gl_ModelViewMatrixTranspose'
+-  , 'gl_ModelViewProjectionMatrix'
+-  , 'gl_ModelViewProjectionMatrixInverse'
+-  , 'gl_ModelViewProjectionMatrixInverseTranspose'
+-  , 'gl_ModelViewProjectionMatrixTranspose'
+-  , 'gl_MultiTexCoord0'
+-  , 'gl_MultiTexCoord1'
+-  , 'gl_MultiTexCoord2'
+-  , 'gl_MultiTexCoord3'
+-  , 'gl_MultiTexCoord4'
+-  , 'gl_MultiTexCoord5'
+-  , 'gl_MultiTexCoord6'
+-  , 'gl_MultiTexCoord7'
+-  , 'gl_Normal'
+-  , 'gl_NormalMatrix'
+-  , 'gl_NormalScale'
+-  , 'gl_ObjectPlaneQ'
+-  , 'gl_ObjectPlaneR'
+-  , 'gl_ObjectPlaneS'
+-  , 'gl_ObjectPlaneT'
+-  , 'gl_Point'
+-  , 'gl_PointCoord'
+-  , 'gl_PointParameters'
+-  , 'gl_PointSize'
+-  , 'gl_Position'
+-  , 'gl_ProjectionMatrix'
+-  , 'gl_ProjectionMatrixInverse'
+-  , 'gl_ProjectionMatrixInverseTranspose'
+-  , 'gl_ProjectionMatrixTranspose'
+-  , 'gl_SecondaryColor'
+-  , 'gl_TexCoord'
+-  , 'gl_TextureEnvColor'
+-  , 'gl_TextureMatrix'
+-  , 'gl_TextureMatrixInverse'
+-  , 'gl_TextureMatrixInverseTranspose'
+-  , 'gl_TextureMatrixTranspose'
+-  , 'gl_Vertex'
+-  , 'greaterThan'
+-  , 'greaterThanEqual'
+-  , 'inversesqrt'
+-  , 'length'
+-  , 'lessThan'
+-  , 'lessThanEqual'
+-  , 'log'
+-  , 'log2'
+-  , 'matrixCompMult'
+-  , 'max'
+-  , 'min'
+-  , 'mix'
+-  , 'mod'
+-  , 'normalize'
+-  , 'not'
+-  , 'notEqual'
+-  , 'pow'
+-  , 'radians'
+-  , 'reflect'
+-  , 'refract'
+-  , 'sign'
+-  , 'sin'
+-  , 'smoothstep'
+-  , 'sqrt'
+-  , 'step'
+-  , 'tan'
+-  , 'texture2D'
+-  , 'texture2DLod'
+-  , 'texture2DProj'
+-  , 'texture2DProjLod'
+-  , 'textureCube'
+-  , 'textureCubeLod'
+-  , 'texture2DLodEXT'
+-  , 'texture2DProjLodEXT'
+-  , 'textureCubeLodEXT'
+-  , 'texture2DGradEXT'
+-  , 'texture2DProjGradEXT'
+-  , 'textureCubeGradEXT'
+-]
++  //Draw border
++  if(lineWidth > 0) {
+ 
+-},{}],237:[function(require,module,exports){
+-var v100 = require('./literals')
++    //Draw border
++    var w = lineWidth * pixelRatio
++    boxes.drawBox(loX-w, loY-w, hiX+w, loY+w, borderColor)
++    boxes.drawBox(loX-w, hiY-w, hiX+w, hiY+w, borderColor)
++    boxes.drawBox(loX-w, loY-w, loX+w, hiY+w, borderColor)
++    boxes.drawBox(hiX-w, loY-w, hiX+w, hiY+w, borderColor)
++  }
++}
+ 
+-module.exports = v100.slice().concat([
+-   'layout'
+-  , 'centroid'
+-  , 'smooth'
+-  , 'case'
+-  , 'mat2x2'
+-  , 'mat2x3'
+-  , 'mat2x4'
+-  , 'mat3x2'
+-  , 'mat3x3'
+-  , 'mat3x4'
+-  , 'mat4x2'
+-  , 'mat4x3'
+-  , 'mat4x4'
+-  , 'uint'
+-  , 'uvec2'
+-  , 'uvec3'
+-  , 'uvec4'
+-  , 'samplerCubeShadow'
+-  , 'sampler2DArray'
+-  , 'sampler2DArrayShadow'
+-  , 'isampler2D'
+-  , 'isampler3D'
+-  , 'isamplerCube'
+-  , 'isampler2DArray'
+-  , 'usampler2D'
+-  , 'usampler3D'
+-  , 'usamplerCube'
+-  , 'usampler2DArray'
+-  , 'coherent'
+-  , 'restrict'
+-  , 'readonly'
+-  , 'writeonly'
+-  , 'resource'
+-  , 'atomic_uint'
+-  , 'noperspective'
+-  , 'patch'
+-  , 'sample'
+-  , 'subroutine'
+-  , 'common'
+-  , 'partition'
+-  , 'active'
+-  , 'filter'
+-  , 'image1D'
+-  , 'image2D'
+-  , 'image3D'
+-  , 'imageCube'
+-  , 'iimage1D'
+-  , 'iimage2D'
+-  , 'iimage3D'
+-  , 'iimageCube'
+-  , 'uimage1D'
+-  , 'uimage2D'
+-  , 'uimage3D'
+-  , 'uimageCube'
+-  , 'image1DArray'
+-  , 'image2DArray'
+-  , 'iimage1DArray'
+-  , 'iimage2DArray'
+-  , 'uimage1DArray'
+-  , 'uimage2DArray'
+-  , 'image1DShadow'
+-  , 'image2DShadow'
+-  , 'image1DArrayShadow'
+-  , 'image2DArrayShadow'
+-  , 'imageBuffer'
+-  , 'iimageBuffer'
+-  , 'uimageBuffer'
+-  , 'sampler1DArray'
+-  , 'sampler1DArrayShadow'
+-  , 'isampler1D'
+-  , 'isampler1DArray'
+-  , 'usampler1D'
+-  , 'usampler1DArray'
+-  , 'isampler2DRect'
+-  , 'usampler2DRect'
+-  , 'samplerBuffer'
+-  , 'isamplerBuffer'
+-  , 'usamplerBuffer'
+-  , 'sampler2DMS'
+-  , 'isampler2DMS'
+-  , 'usampler2DMS'
+-  , 'sampler2DMSArray'
+-  , 'isampler2DMSArray'
+-  , 'usampler2DMSArray'
+-])
++proto.update = function(options) {
++  options = options || {}
++
++  this.innerFill    = !!options.innerFill
++  this.outerFill    = !!options.outerFill
++  this.innerColor   = (options.innerColor   || [0,0,0,0.5]).slice()
++  this.outerColor   = (options.outerColor   || [0,0,0,0.5]).slice()
++  this.borderColor  = (options.borderColor || [0,0,0,1]).slice()
++  this.borderWidth  = options.borderWidth || 0
++  this.selectBox    = (options.selectBox || this.selectBox).slice()
++}
++
++proto.dispose = function() {
++  this.boxBuffer.dispose()
++  this.boxShader.dispose()
++  this.plot.removeOverlay(this)
++}
+ 
+-},{"./literals":238}],238:[function(require,module,exports){
+-module.exports = [
+-  // current
+-    'precision'
+-  , 'highp'
+-  , 'mediump'
+-  , 'lowp'
+-  , 'attribute'
+-  , 'const'
+-  , 'uniform'
+-  , 'varying'
+-  , 'break'
+-  , 'continue'
+-  , 'do'
+-  , 'for'
+-  , 'while'
+-  , 'if'
+-  , 'else'
+-  , 'in'
+-  , 'out'
+-  , 'inout'
+-  , 'float'
+-  , 'int'
+-  , 'void'
+-  , 'bool'
+-  , 'true'
+-  , 'false'
+-  , 'discard'
+-  , 'return'
+-  , 'mat2'
+-  , 'mat3'
+-  , 'mat4'
+-  , 'vec2'
+-  , 'vec3'
+-  , 'vec4'
+-  , 'ivec2'
+-  , 'ivec3'
+-  , 'ivec4'
+-  , 'bvec2'
+-  , 'bvec3'
+-  , 'bvec4'
+-  , 'sampler1D'
+-  , 'sampler2D'
+-  , 'sampler3D'
+-  , 'samplerCube'
+-  , 'sampler1DShadow'
+-  , 'sampler2DShadow'
+-  , 'struct'
++function createSelectBox(plot, options) {
++  var gl = plot.gl
++  var buffer = createBuffer(gl, [
++    0, 0,
++    0, 1,
++    1, 0,
++    1, 1 ])
++  var shader = createShader(gl, SHADERS.boxVertex, SHADERS.boxFragment)
++  var selectBox = new SelectBox(plot, buffer, shader)
++  selectBox.update(options)
++  plot.addOverlay(selectBox)
++  return selectBox
++}
+ 
+-  // future
+-  , 'asm'
+-  , 'class'
+-  , 'union'
+-  , 'enum'
+-  , 'typedef'
+-  , 'template'
+-  , 'this'
+-  , 'packed'
+-  , 'goto'
+-  , 'switch'
+-  , 'default'
+-  , 'inline'
+-  , 'noinline'
+-  , 'volatile'
+-  , 'public'
+-  , 'static'
+-  , 'extern'
+-  , 'external'
+-  , 'interface'
+-  , 'long'
+-  , 'short'
+-  , 'double'
+-  , 'half'
+-  , 'fixed'
+-  , 'unsigned'
+-  , 'input'
+-  , 'output'
+-  , 'hvec2'
+-  , 'hvec3'
+-  , 'hvec4'
+-  , 'dvec2'
+-  , 'dvec3'
+-  , 'dvec4'
+-  , 'fvec2'
+-  , 'fvec3'
+-  , 'fvec4'
+-  , 'sampler2DRect'
+-  , 'sampler3DRect'
+-  , 'sampler2DRectShadow'
+-  , 'sizeof'
+-  , 'cast'
+-  , 'namespace'
+-  , 'using'
+-]
++},{"./lib/shaders":187,"gl-buffer":121,"gl-shader":190}],189:[function(require,module,exports){
++'use strict'
+ 
+-},{}],239:[function(require,module,exports){
+-module.exports = [
+-    '<<='
+-  , '>>='
+-  , '++'
+-  , '--'
+-  , '<<'
+-  , '>>'
+-  , '<='
+-  , '>='
+-  , '=='
+-  , '!='
+-  , '&&'
+-  , '||'
+-  , '+='
+-  , '-='
+-  , '*='
+-  , '/='
+-  , '%='
+-  , '&='
+-  , '^^'
+-  , '^='
+-  , '|='
+-  , '('
+-  , ')'
+-  , '['
+-  , ']'
+-  , '.'
+-  , '!'
+-  , '~'
+-  , '*'
+-  , '/'
+-  , '%'
+-  , '+'
+-  , '-'
+-  , '<'
+-  , '>'
+-  , '&'
+-  , '^'
+-  , '|'
+-  , '?'
+-  , ':'
+-  , '='
+-  , ','
+-  , ';'
+-  , '{'
+-  , '}'
+-]
++module.exports = createSelectBuffer
+ 
+-},{}],240:[function(require,module,exports){
+-var tokenize = require('./index')
++var createFBO = require('gl-fbo')
++var pool      = require('typedarray-pool')
++var ndarray   = require('ndarray')
+ 
+-module.exports = tokenizeString
++var nextPow2  = require('bit-twiddle').nextPow2
+ 
+-function tokenizeString(str, opt) {
+-  var generator = tokenize(opt)
+-  var tokens = []
++var selectRange = require('cwise/lib/wrapper')({"args":["array",{"offset":[0,0,1],"array":0},{"offset":[0,0,2],"array":0},{"offset":[0,0,3],"array":0},"scalar","scalar","index"],"pre":{"body":"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"body":{"body":"{if(_inline_49_arg0_<255||_inline_49_arg1_<255||_inline_49_arg2_<255||_inline_49_arg3_<255){var _inline_49_l=_inline_49_arg4_-_inline_49_arg6_[0],_inline_49_a=_inline_49_arg5_-_inline_49_arg6_[1],_inline_49_f=_inline_49_l*_inline_49_l+_inline_49_a*_inline_49_a;_inline_49_f<this_closestD2&&(this_closestD2=_inline_49_f,this_closestX=_inline_49_arg6_[0],this_closestY=_inline_49_arg6_[1])}}","args":[{"name":"_inline_49_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg4_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg5_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_49_arg6_","lvalue":false,"rvalue":true,"count":4}],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":["_inline_49_a","_inline_49_f","_inline_49_l"]},"post":{"body":"{return[this_closestX,this_closestY,this_closestD2]}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
+ 
+-  tokens = tokens.concat(generator(str))
+-  tokens = tokens.concat(generator(null))
++function SelectResult(x, y, id, value, distance) {
++  this.coord = [x, y]
++  this.id = id
++  this.value = value
++  this.distance = distance
++}
+ 
+-  return tokens
++function SelectBuffer(gl, fbo, buffer) {
++  this.gl     = gl
++  this.fbo    = fbo
++  this.buffer = buffer
++  this._readTimeout = null
++  var self = this
++
++  this._readCallback = function() {
++    if(!self.gl) {
++      return
++    }
++    fbo.bind()
++    gl.readPixels(0,0,fbo.shape[0],fbo.shape[1],gl.RGBA,gl.UNSIGNED_BYTE,self.buffer)
++    self._readTimeout = null
++  }
+ }
+ 
+-},{"./index":234}],241:[function(require,module,exports){
+-"use strict"
++var proto = SelectBuffer.prototype
+ 
+-//High level idea:
+-// 1. Use Clarkson's incremental construction to find convex hull
+-// 2. Point location in triangulation by jump and walk
++Object.defineProperty(proto, 'shape', {
++  get: function() {
++    if(!this.gl) {
++      return [0,0]
++    }
++    return this.fbo.shape.slice()
++  },
++  set: function(v) {
++    if(!this.gl) {
++      return
++    }
++    this.fbo.shape = v
++    var c = this.fbo.shape[0]
++    var r = this.fbo.shape[1]
++    if(r*c*4 > this.buffer.length) {
++      pool.free(this.buffer)
++      var buffer = this.buffer = pool.mallocUint8(nextPow2(r*c*4))
++      for(var i=0; i<r*c*4; ++i) {
++        buffer[i] = 0xff
++      }
++    }
++    return v
++  }
++})
+ 
+-module.exports = incrementalConvexHull
++proto.begin = function() {
++  var gl = this.gl
++  var shape = this.shape
++  if(!gl) {
++    return
++  }
+ 
+-var orient = require("robust-orientation")
+-var compareCell = require("simplicial-complex").compareCells
++  this.fbo.bind()
++  gl.clearColor(1,1,1,1)
++  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
++}
+ 
+-function compareInt(a, b) {
+-  return a - b
++proto.end = function() {
++  var gl = this.gl
++  if(!gl) {
++    return
++  }
++  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++  if(!this._readTimeout) {
++    clearTimeout(this._readTimeout)
++  }
++  this._readTimeout = setTimeout(this._readCallback, 1)
+ }
+ 
+-function Simplex(vertices, adjacent, boundary) {
+-  this.vertices = vertices
+-  this.adjacent = adjacent
+-  this.boundary = boundary
+-  this.lastVisited = -1
++proto.query = function(x, y, radius) {
++  if(!this.gl) {
++    return null
++  }
++
++  var shape = this.fbo.shape.slice()
++
++  x = x|0
++  y = y|0
++  if(typeof radius !== 'number') {
++    radius = 1.0
++  }
++
++  var x0 = Math.min(Math.max(x - radius, 0), shape[0])|0
++  var x1 = Math.min(Math.max(x + radius, 0), shape[0])|0
++  var y0 = Math.min(Math.max(y - radius, 0), shape[1])|0
++  var y1 = Math.min(Math.max(y + radius, 0), shape[1])|0
++
++  if(x1 <= x0 || y1 <= y0) {
++    return null
++  }
++
++  var dims   = [x1-x0,y1-y0]
++  var region = ndarray(
++    this.buffer,
++    [dims[0], dims[1], 4],
++    [4, shape[0]*4, 1],
++    4*(x0 + shape[0]*y0));
++
++  var closest = selectRange(region.hi(dims[0],dims[1],1), radius, radius)
++  var dx = closest[0]
++  var dy = closest[1]
++  if(dx < 0 || Math.pow(this.radius, 2) < closest[2]) {
++    return null
++  }
++
++  var c0 = region.get(dx, dy, 0)
++  var c1 = region.get(dx, dy, 1)
++  var c2 = region.get(dx, dy, 2)
++  var c3 = region.get(dx, dy, 3)
++
++  return new SelectResult(
++     (dx + x0)|0,
++     (dy + y0)|0,
++     c0,
++     [c1, c2, c3],
++     Math.sqrt(closest[2]))
+ }
+ 
+-Simplex.prototype.flip = function() {
+-  var t = this.vertices[0]
+-  this.vertices[0] = this.vertices[1]
+-  this.vertices[1] = t
+-  var u = this.adjacent[0]
+-  this.adjacent[0] = this.adjacent[1]
+-  this.adjacent[1] = u
++proto.dispose = function() {
++  if(!this.gl) {
++    return
++  }
++  this.fbo.dispose()
++  pool.free(this.buffer)
++  this.gl = null
++  if(this._readTimeout) {
++    clearTimeout(this._readTimeout)
++  }
+ }
+ 
+-function GlueFacet(vertices, cell, index) {
+-  this.vertices = vertices
+-  this.cell = cell
+-  this.index = index
++function createSelectBuffer(gl, shape) {
++  var fbo = createFBO(gl, shape)
++  var buffer = pool.mallocUint8(shape[0]*shape[1]*4)
++  return new SelectBuffer(gl, fbo, buffer)
+ }
+ 
+-function compareGlue(a, b) {
+-  return compareCell(a.vertices, b.vertices)
++},{"bit-twiddle":49,"cwise/lib/wrapper":89,"gl-fbo":128,"ndarray":385,"typedarray-pool":449}],190:[function(require,module,exports){
++'use strict'
++
++var createUniformWrapper   = require('./lib/create-uniforms')
++var createAttributeWrapper = require('./lib/create-attributes')
++var makeReflect            = require('./lib/reflect')
++var shaderCache            = require('./lib/shader-cache')
++var runtime                = require('./lib/runtime-reflect')
++var GLError                = require("./lib/GLError")
++
++//Shader object
++function Shader(gl) {
++  this.gl         = gl
++  this.gl.lastAttribCount = 0  // fixme where else should we store info, safe but not nice on the gl object
++
++  //Default initialize these to null
++  this._vref      =
++  this._fref      =
++  this._relink    =
++  this.vertShader =
++  this.fragShader =
++  this.program    =
++  this.attributes =
++  this.uniforms   =
++  this.types      = null
+ }
+ 
+-function bakeOrient(d) {
+-  var code = ["function orient(){var tuple=this.tuple;return test("]
+-  for(var i=0; i<=d; ++i) {
+-    if(i > 0) {
+-      code.push(",")
+-    }
+-    code.push("tuple[", i, "]")
++var proto = Shader.prototype
++
++proto.bind = function() {
++  if(!this.program) {
++    this._relink()
+   }
+-  code.push(")}return orient")
+-  var proc = new Function("test", code.join(""))
+-  var test = orient[d+1]
+-  if(!test) {
+-    test = orient
++
++  // ensuring that we have the right number of enabled vertex attributes
++  var i
++  var newAttribCount = this.gl.getProgramParameter(this.program, this.gl.ACTIVE_ATTRIBUTES) // more robust approach
++  //var newAttribCount = Object.keys(this.attributes).length // avoids the probably immaterial introspection slowdown
++  var oldAttribCount = this.gl.lastAttribCount
++  if(newAttribCount > oldAttribCount) {
++    for(i = oldAttribCount; i < newAttribCount; i++) {
++      this.gl.enableVertexAttribArray(i)
++    }
++  } else if(oldAttribCount > newAttribCount) {
++    for(i = newAttribCount; i < oldAttribCount; i++) {
++      this.gl.disableVertexAttribArray(i)
++    }
+   }
+-  return proc(test)
++
++  this.gl.lastAttribCount = newAttribCount
++
++  this.gl.useProgram(this.program)
+ }
+ 
+-var BAKED = []
++proto.dispose = function() {
+ 
+-function Triangulation(dimension, vertices, simplices) {
+-  this.dimension = dimension
+-  this.vertices = vertices
+-  this.simplices = simplices
+-  this.interior = simplices.filter(function(c) {
+-    return !c.boundary
+-  })
++  // disabling vertex attributes so new shader starts with zero
++  // and it's also useful if all shaders are disposed but the
++  // gl context is reused for subsequent replotting
++  var oldAttribCount = this.gl.lastAttribCount
++  for (var i = 0; i < oldAttribCount; i++) {
++    this.gl.disableVertexAttribArray(i)
++  }
++  this.gl.lastAttribCount = 0
+ 
+-  this.tuple = new Array(dimension+1)
+-  for(var i=0; i<=dimension; ++i) {
+-    this.tuple[i] = this.vertices[i]
++  if(this._fref) {
++    this._fref.dispose()
+   }
++  if(this._vref) {
++    this._vref.dispose()
++  }
++  this.attributes =
++  this.types      =
++  this.vertShader =
++  this.fragShader =
++  this.program    =
++  this._relink    =
++  this._fref      =
++  this._vref      = null
++}
+ 
+-  var o = BAKED[dimension]
+-  if(!o) {
+-    o = BAKED[dimension] = bakeOrient(dimension)
++function compareAttributes(a, b) {
++  if(a.name < b.name) {
++    return -1
+   }
+-  this.orient = o
++  return 1
+ }
+ 
+-var proto = Triangulation.prototype
++//Update export hook for glslify-live
++proto.update = function(
++    vertSource
++  , fragSource
++  , uniforms
++  , attributes) {
+ 
+-//Degenerate situation where we are on boundary, but coplanar to face
+-proto.handleBoundaryDegeneracy = function(cell, point) {
+-  var d = this.dimension
+-  var n = this.vertices.length - 1
+-  var tuple = this.tuple
+-  var verts = this.vertices
++  //If only one object passed, assume glslify style output
++  if(!fragSource || arguments.length === 1) {
++    var obj = vertSource
++    vertSource = obj.vertex
++    fragSource = obj.fragment
++    uniforms   = obj.uniforms
++    attributes = obj.attributes
++  }
+ 
+-  //Dumb solution: Just do dfs from boundary cell until we find any peak, or terminate
+-  var toVisit = [ cell ]
+-  cell.lastVisited = -n
+-  while(toVisit.length > 0) {
+-    cell = toVisit.pop()
+-    var cellVerts = cell.vertices
+-    var cellAdj = cell.adjacent
+-    for(var i=0; i<=d; ++i) {
+-      var neighbor = cellAdj[i]
+-      if(!neighbor.boundary || neighbor.lastVisited <= -n) {
+-        continue
+-      }
+-      var nv = neighbor.vertices
+-      for(var j=0; j<=d; ++j) {
+-        var vv = nv[j]
+-        if(vv < 0) {
+-          tuple[j] = point
++  var wrapper = this
++  var gl      = wrapper.gl
++
++  //Compile vertex and fragment shaders
++  var pvref = wrapper._vref
++  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
++  if(pvref) {
++    pvref.dispose()
++  }
++  wrapper.vertShader = wrapper._vref.shader
++  var pfref = this._fref
++  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
++  if(pfref) {
++    pfref.dispose()
++  }
++  wrapper.fragShader = wrapper._fref.shader
++
++  //If uniforms/attributes is not specified, use RT reflection
++  if(!uniforms || !attributes) {
++
++    //Create initial test program
++    var testProgram = gl.createProgram()
++    gl.attachShader(testProgram, wrapper.fragShader)
++    gl.attachShader(testProgram, wrapper.vertShader)
++    gl.linkProgram(testProgram)
++    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
++      var errLog = gl.getProgramInfoLog(testProgram)
++      throw new GLError(errLog, 'Error linking program:' + errLog)
++    }
++
++    //Load data from runtime
++    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
++    attributes = attributes || runtime.attributes(gl, testProgram)
++
++    //Release test program
++    gl.deleteProgram(testProgram)
++  }
++
++  //Sort attributes lexicographically
++  // overrides undefined WebGL behavior for attribute locations
++  attributes = attributes.slice()
++  attributes.sort(compareAttributes)
++
++  //Convert attribute types, read out locations
++  var attributeUnpacked  = []
++  var attributeNames     = []
++  var attributeLocations = []
++  var i
++  for(i=0; i<attributes.length; ++i) {
++    var attr = attributes[i]
++    if(attr.type.indexOf('mat') >= 0) {
++      var size = attr.type.charAt(attr.type.length-1)|0
++      var locVector = new Array(size)
++      for(var j=0; j<size; ++j) {
++        locVector[j] = attributeLocations.length
++        attributeNames.push(attr.name + '[' + j + ']')
++        if(typeof attr.location === 'number') {
++          attributeLocations.push(attr.location + j)
++        } else if(Array.isArray(attr.location) &&
++                  attr.location.length === size &&
++                  typeof attr.location[j] === 'number') {
++          attributeLocations.push(attr.location[j]|0)
+         } else {
+-          tuple[j] = verts[vv]
++          attributeLocations.push(-1)
+         }
+       }
+-      var o = this.orient()
+-      if(o > 0) {
+-        return neighbor
++      attributeUnpacked.push({
++        name: attr.name,
++        type: attr.type,
++        locations: locVector
++      })
++    } else {
++      attributeUnpacked.push({
++        name: attr.name,
++        type: attr.type,
++        locations: [ attributeLocations.length ]
++      })
++      attributeNames.push(attr.name)
++      if(typeof attr.location === 'number') {
++        attributeLocations.push(attr.location|0)
++      } else {
++        attributeLocations.push(-1)
+       }
+-      neighbor.lastVisited = -n
+-      if(o === 0) {
+-        toVisit.push(neighbor)
++    }
++  }
++
++  //For all unspecified attributes, assign them lexicographically min attribute
++  var curLocation = 0
++  for(i=0; i<attributeLocations.length; ++i) {
++    if(attributeLocations[i] < 0) {
++      while(attributeLocations.indexOf(curLocation) >= 0) {
++        curLocation += 1
+       }
++      attributeLocations[i] = curLocation
+     }
+   }
+-  return null
+-}
+ 
+-proto.walk = function(point, random) {
+-  //Alias local properties
+-  var n = this.vertices.length - 1
+-  var d = this.dimension
+-  var verts = this.vertices
+-  var tuple = this.tuple
++  //Rebuild program and recompute all uniform locations
++  var uniformLocations = new Array(uniforms.length)
++  function relink() {
++    wrapper.program = shaderCache.program(
++        gl
++      , wrapper._vref
++      , wrapper._fref
++      , attributeNames
++      , attributeLocations)
+ 
+-  //Compute initial jump cell
+-  var initIndex = random ? (this.interior.length * Math.random())|0 : (this.interior.length-1)
+-  var cell = this.interior[ initIndex ]
++    for(var i=0; i<uniforms.length; ++i) {
++      uniformLocations[i] = gl.getUniformLocation(
++          wrapper.program
++        , uniforms[i].name)
++    }
++  }
+ 
+-  //Start walking
+-outerLoop:
+-  while(!cell.boundary) {
+-    var cellVerts = cell.vertices
+-    var cellAdj = cell.adjacent
++  //Perform initial linking, reuse program used for reflection
++  relink()
+ 
+-    for(var i=0; i<=d; ++i) {
+-      tuple[i] = verts[cellVerts[i]]
+-    }
+-    cell.lastVisited = n
++  //Save relinking procedure, defer until runtime
++  wrapper._relink = relink
+ 
+-    //Find farthest adjacent cell
+-    for(var i=0; i<=d; ++i) {
+-      var neighbor = cellAdj[i]
+-      if(neighbor.lastVisited >= n) {
+-        continue
+-      }
+-      var prev = tuple[i]
+-      tuple[i] = point
+-      var o = this.orient()
+-      tuple[i] = prev
+-      if(o < 0) {
+-        cell = neighbor
+-        continue outerLoop
+-      } else {
+-        if(!neighbor.boundary) {
+-          neighbor.lastVisited = n
+-        } else {
+-          neighbor.lastVisited = -n
+-        }
+-      }
+-    }
+-    return
++  //Generate type info
++  wrapper.types = {
++    uniforms:   makeReflect(uniforms),
++    attributes: makeReflect(attributes)
+   }
+ 
+-  return cell
++  //Generate attribute wrappers
++  wrapper.attributes = createAttributeWrapper(
++      gl
++    , wrapper
++    , attributeUnpacked
++    , attributeLocations)
++
++  //Generate uniform wrappers
++  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
++      gl
++    , wrapper
++    , uniforms
++    , uniformLocations))
+ }
+ 
+-proto.addPeaks = function(point, cell) {
+-  var n = this.vertices.length - 1
+-  var d = this.dimension
+-  var verts = this.vertices
+-  var tuple = this.tuple
+-  var interior = this.interior
+-  var simplices = this.simplices
++//Compiles and links a shader program with the given attribute and vertex list
++function createShader(
++    gl
++  , vertSource
++  , fragSource
++  , uniforms
++  , attributes) {
+ 
+-  //Walking finished at boundary, time to add peaks
+-  var tovisit = [ cell ]
++  var shader = new Shader(gl)
+ 
+-  //Stretch initial boundary cell into a peak
+-  cell.lastVisited = n
+-  cell.vertices[cell.vertices.indexOf(-1)] = n
+-  cell.boundary = false
+-  interior.push(cell)
++  shader.update(
++      vertSource
++    , fragSource
++    , uniforms
++    , attributes)
+ 
+-  //Record a list of all new boundaries created by added peaks so we can glue them together when we are all done
+-  var glueFacets = []
++  return shader
++}
+ 
+-  //Do a traversal of the boundary walking outward from starting peak
+-  while(tovisit.length > 0) {
+-    //Pop off peak and walk over adjacent cells
+-    var cell = tovisit.pop()
+-    var cellVerts = cell.vertices
+-    var cellAdj = cell.adjacent
+-    var indexOfN = cellVerts.indexOf(n)
+-    if(indexOfN < 0) {
+-      continue
+-    }
++module.exports = createShader
+ 
+-    for(var i=0; i<=d; ++i) {
+-      if(i === indexOfN) {
+-        continue
+-      }
++},{"./lib/GLError":191,"./lib/create-attributes":192,"./lib/create-uniforms":193,"./lib/reflect":194,"./lib/runtime-reflect":195,"./lib/shader-cache":196}],191:[function(require,module,exports){
++function GLError (rawError, shortMessage, longMessage) {
++    this.shortMessage = shortMessage || ''
++    this.longMessage = longMessage || ''
++    this.rawError = rawError || ''
++    this.message =
++      'gl-shader: ' + (shortMessage || rawError || '') +
++      (longMessage ? '\n'+longMessage : '')
++    this.stack = (new Error()).stack
++}
++GLError.prototype = new Error
++GLError.prototype.name = 'GLError'
++GLError.prototype.constructor = GLError
++module.exports = GLError
+ 
+-      //For each boundary neighbor of the cell
+-      var neighbor = cellAdj[i]
+-      if(!neighbor.boundary || neighbor.lastVisited >= n) {
+-        continue
+-      }
++},{}],192:[function(require,module,exports){
++'use strict'
+ 
+-      var nv = neighbor.vertices
++module.exports = createAttributeWrapper
+ 
+-      //Test if neighbor is a peak
+-      if(neighbor.lastVisited !== -n) {      
+-        //Compute orientation of p relative to each boundary peak
+-        var indexOfNeg1 = 0
+-        for(var j=0; j<=d; ++j) {
+-          if(nv[j] < 0) {
+-            indexOfNeg1 = j
+-            tuple[j] = point
+-          } else {
+-            tuple[j] = verts[nv[j]]
+-          }
+-        }
+-        var o = this.orient()
++var GLError = require("./GLError")
+ 
+-        //Test if neighbor cell is also a peak
+-        if(o > 0) {
+-          nv[indexOfNeg1] = n
+-          neighbor.boundary = false
+-          interior.push(neighbor)
+-          tovisit.push(neighbor)
+-          neighbor.lastVisited = n
+-          continue
+-        } else {
+-          neighbor.lastVisited = -n
+-        }
+-      }
++function ShaderAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , constFunc) {
++  this._gl        = gl
++  this._wrapper   = wrapper
++  this._index     = index
++  this._locations = locations
++  this._dimension = dimension
++  this._constFunc = constFunc
++}
+ 
+-      var na = neighbor.adjacent
++var proto = ShaderAttribute.prototype
+ 
+-      //Otherwise, replace neighbor with new face
+-      var vverts = cellVerts.slice()
+-      var vadj = cellAdj.slice()
+-      var ncell = new Simplex(vverts, vadj, true)
+-      simplices.push(ncell)
++proto.pointer = function setAttribPointer(
++    type
++  , normalized
++  , stride
++  , offset) {
+ 
+-      //Connect to neighbor
+-      var opposite = na.indexOf(cell)
+-      if(opposite < 0) {
+-        continue
+-      }
+-      na[opposite] = ncell
+-      vadj[indexOfN] = neighbor
++  var self      = this
++  var gl        = self._gl
++  var location  = self._locations[self._index]
+ 
+-      //Connect to cell
+-      vverts[i] = -1
+-      vadj[i] = cell
+-      cellAdj[i] = ncell
++  gl.vertexAttribPointer(
++      location
++    , self._dimension
++    , type || gl.FLOAT
++    , !!normalized
++    , stride || 0
++    , offset || 0)
++  gl.enableVertexAttribArray(location)
++}
+ 
+-      //Flip facet
+-      ncell.flip()
++proto.set = function(x0, x1, x2, x3) {
++  return this._constFunc(this._locations[this._index], x0, x1, x2, x3)
++}
+ 
+-      //Add to glue list
+-      for(var j=0; j<=d; ++j) {
+-        var uu = vverts[j]
+-        if(uu < 0 || uu === n) {
+-          continue
+-        }
+-        var nface = new Array(d-1)
+-        var nptr = 0
+-        for(var k=0; k<=d; ++k) {
+-          var vv = vverts[k]
+-          if(vv < 0 || k === j) {
+-            continue
+-          }
+-          nface[nptr++] = vv
+-        }
+-        glueFacets.push(new GlueFacet(nface, ncell, j))
+-      }
++Object.defineProperty(proto, 'location', {
++  get: function() {
++    return this._locations[this._index]
++  }
++  , set: function(v) {
++    if(v !== this._locations[this._index]) {
++      this._locations[this._index] = v|0
++      this._wrapper.program = null
+     }
++    return v|0
+   }
++})
+ 
+-  //Glue boundary facets together
+-  glueFacets.sort(compareGlue)
++//Adds a vector attribute to obj
++function addVectorAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , obj
++  , name) {
+ 
+-  for(var i=0; i+1<glueFacets.length; i+=2) {
+-    var a = glueFacets[i]
+-    var b = glueFacets[i+1]
+-    var ai = a.index
+-    var bi = b.index
+-    if(ai < 0 || bi < 0) {
+-      continue
+-    }
+-    a.cell.adjacent[a.index] = b.cell
+-    b.cell.adjacent[b.index] = a.cell
++  //Construct constant function
++  var constFuncArgs = [ 'gl', 'v' ]
++  var varNames = []
++  for(var i=0; i<dimension; ++i) {
++    constFuncArgs.push('x'+i)
++    varNames.push('x'+i)
+   }
++  constFuncArgs.push(
++    'if(x0.length===void 0){return gl.vertexAttrib' +
++    dimension + 'f(v,' +
++    varNames.join() +
++    ')}else{return gl.vertexAttrib' +
++    dimension +
++    'fv(v,x0)}')
++  var constFunc = Function.apply(null, constFuncArgs)
++
++  //Create attribute wrapper
++  var attr = new ShaderAttribute(
++      gl
++    , wrapper
++    , index
++    , locations
++    , dimension
++    , constFunc)
++
++  //Create accessor
++  Object.defineProperty(obj, name, {
++    set: function(x) {
++      gl.disableVertexAttribArray(locations[index])
++      constFunc(gl, locations[index], x)
++      return x
++    }
++    , get: function() {
++      return attr
++    }
++    , enumerable: true
++  })
+ }
+ 
+-proto.insert = function(point, random) {
+-  //Add point
+-  var verts = this.vertices
+-  verts.push(point)
++function addMatrixAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , obj
++  , name) {
+ 
+-  var cell = this.walk(point, random)
+-  if(!cell) {
+-    return
++  var parts = new Array(dimension)
++  var attrs = new Array(dimension)
++  for(var i=0; i<dimension; ++i) {
++    addVectorAttribute(
++        gl
++      , wrapper
++      , index[i]
++      , locations
++      , dimension
++      , parts
++      , i)
++    attrs[i] = parts[i]
+   }
+ 
+-  //Alias local properties
+-  var d = this.dimension
+-  var tuple = this.tuple
+-
+-  //Degenerate case: If point is coplanar to cell, then walk until we find a non-degenerate boundary
+-  for(var i=0; i<=d; ++i) {
+-    var vv = cell.vertices[i]
+-    if(vv < 0) {
+-      tuple[i] = point
+-    } else {
+-      tuple[i] = verts[vv]
++  Object.defineProperty(parts, 'location', {
++    set: function(v) {
++      if(Array.isArray(v)) {
++        for(var i=0; i<dimension; ++i) {
++          attrs[i].location = v[i]
++        }
++      } else {
++        for(var i=0; i<dimension; ++i) {
++          attrs[i].location = v + i
++        }
++      }
++      return v
+     }
+-  }
+-  var o = this.orient(tuple)
+-  if(o < 0) {
+-    return
+-  } else if(o === 0) {
+-    cell = this.handleBoundaryDegeneracy(cell, point)
+-    if(!cell) {
+-      return
++    , get: function() {
++      var result = new Array(dimension)
++      for(var i=0; i<dimension; ++i) {
++        result[i] = locations[index[i]]
++      }
++      return result
++    }
++    , enumerable: true
++  })
++
++  parts.pointer = function(type, normalized, stride, offset) {
++    type       = type || gl.FLOAT
++    normalized = !!normalized
++    stride     = stride || (dimension * dimension)
++    offset     = offset || 0
++    for(var i=0; i<dimension; ++i) {
++      var location = locations[index[i]]
++      gl.vertexAttribPointer(
++            location
++          , dimension
++          , type
++          , normalized
++          , stride
++          , offset + i * dimension)
++      gl.enableVertexAttribArray(location)
+     }
+   }
+ 
+-  //Add peaks
+-  this.addPeaks(point, cell)
++  var scratch = new Array(dimension)
++  var vertexAttrib = gl['vertexAttrib' + dimension + 'fv']
++
++  Object.defineProperty(obj, name, {
++    set: function(x) {
++      for(var i=0; i<dimension; ++i) {
++        var loc = locations[index[i]]
++        gl.disableVertexAttribArray(loc)
++        if(Array.isArray(x[0])) {
++          vertexAttrib.call(gl, loc, x[i])
++        } else {
++          for(var j=0; j<dimension; ++j) {
++            scratch[j] = x[dimension*i + j]
++          }
++          vertexAttrib.call(gl, loc, scratch)
++        }
++      }
++      return x
++    }
++    , get: function() {
++      return parts
++    }
++    , enumerable: true
++  })
+ }
+ 
+-//Extract all boundary cells
+-proto.boundary = function() {
+-  var d = this.dimension
+-  var boundary = []
+-  var cells = this.simplices
+-  var nc = cells.length
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    if(c.boundary) {
+-      var bcell = new Array(d)
+-      var cv = c.vertices
+-      var ptr = 0
+-      var parity = 0
+-      for(var j=0; j<=d; ++j) {
+-        if(cv[j] >= 0) {
+-          bcell[ptr++] = cv[j]
++//Create shims for attributes
++function createAttributeWrapper(
++    gl
++  , wrapper
++  , attributes
++  , locations) {
++
++  var obj = {}
++  for(var i=0, n=attributes.length; i<n; ++i) {
++
++    var a = attributes[i]
++    var name = a.name
++    var type = a.type
++    var locs = a.locations
++
++    switch(type) {
++      case 'bool':
++      case 'int':
++      case 'float':
++        addVectorAttribute(
++            gl
++          , wrapper
++          , locs[0]
++          , locations
++          , 1
++          , obj
++          , name)
++      break
++
++      default:
++        if(type.indexOf('vec') >= 0) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
++          }
++          addVectorAttribute(
++              gl
++            , wrapper
++            , locs[0]
++            , locations
++            , d
++            , obj
++            , name)
++        } else if(type.indexOf('mat') >= 0) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
++          }
++          addMatrixAttribute(
++              gl
++            , wrapper
++            , locs
++            , locations
++            , d
++            , obj
++            , name)
+         } else {
+-          parity = j&1
++          throw new GLError('', 'Unknown data type for attribute ' + name + ': ' + type)
+         }
+-      }
+-      if(parity === (d&1)) {
+-        var t = bcell[0]
+-        bcell[0] = bcell[1]
+-        bcell[1] = t
+-      }
+-      boundary.push(bcell)
++      break
+     }
+   }
+-  return boundary
++  return obj
+ }
+ 
+-function incrementalConvexHull(points, randomSearch) {
+-  var n = points.length
+-  if(n === 0) {
+-    throw new Error("Must have at least d+1 points")
+-  }
+-  var d = points[0].length
+-  if(n <= d) {
+-    throw new Error("Must input at least d+1 points")
+-  }
+-
+-  //FIXME: This could be degenerate, but need to select d+1 non-coplanar points to bootstrap process
+-  var initialSimplex = points.slice(0, d+1)
++},{"./GLError":191}],193:[function(require,module,exports){
++'use strict'
+ 
+-  //Make sure initial simplex is positively oriented
+-  var o = orient.apply(void 0, initialSimplex)
+-  if(o === 0) {
+-    throw new Error("Input not in general position")
+-  }
+-  var initialCoords = new Array(d+1)
+-  for(var i=0; i<=d; ++i) {
+-    initialCoords[i] = i
+-  }
+-  if(o < 0) {
+-    initialCoords[0] = 1
+-    initialCoords[1] = 0
+-  }
++var coallesceUniforms = require('./reflect')
++var GLError = require("./GLError")
+ 
+-  //Create initial topological index, glue pointers together (kind of messy)
+-  var initialCell = new Simplex(initialCoords, new Array(d+1), false)
+-  var boundary = initialCell.adjacent
+-  var list = new Array(d+2)
+-  for(var i=0; i<=d; ++i) {
+-    var verts = initialCoords.slice()
+-    for(var j=0; j<=d; ++j) {
+-      if(j === i) {
+-        verts[j] = -1
+-      }
+-    }
+-    var t = verts[0]
+-    verts[0] = verts[1]
+-    verts[1] = t
+-    var cell = new Simplex(verts, new Array(d+1), true)
+-    boundary[i] = cell
+-    list[i] = cell
+-  }
+-  list[d+1] = initialCell
+-  for(var i=0; i<=d; ++i) {
+-    var verts = boundary[i].vertices
+-    var adj = boundary[i].adjacent
+-    for(var j=0; j<=d; ++j) {
+-      var v = verts[j]
+-      if(v < 0) {
+-        adj[j] = initialCell
+-        continue
+-      }
+-      for(var k=0; k<=d; ++k) {
+-        if(boundary[k].vertices.indexOf(v) < 0) {
+-          adj[j] = boundary[k]
+-        }
+-      }
+-    }
+-  }
++module.exports = createUniformWrapper
+ 
+-  //Initialize triangles
+-  var triangles = new Triangulation(d, initialSimplex, list)
++//Binds a function and returns a value
++function identity(x) {
++  var c = new Function('y', 'return function(){return y}')
++  return c(x)
++}
+ 
+-  //Insert remaining points
+-  var useRandom = !!randomSearch
+-  for(var i=d+1; i<n; ++i) {
+-    triangles.insert(points[i], useRandom)
++function makeVector(length, fill) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = fill
+   }
+-  
+-  //Extract boundary cells
+-  return triangles.boundary()
++  return result
+ }
+-},{"robust-orientation":439,"simplicial-complex":244}],242:[function(require,module,exports){
+-arguments[4][51][0].apply(exports,arguments)
+-},{"dup":51}],243:[function(require,module,exports){
+-arguments[4][103][0].apply(exports,arguments)
+-},{"dup":103}],244:[function(require,module,exports){
+-"use strict"; "use restrict";
+ 
+-var bits      = require("bit-twiddle")
+-  , UnionFind = require("union-find")
++//Create shims for uniforms
++function createUniformWrapper(gl, wrapper, uniforms, locations) {
+ 
+-//Returns the dimension of a cell complex
+-function dimension(cells) {
+-  var d = 0
+-    , max = Math.max
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    d = max(d, cells[i].length)
++  function makeGetter(index) {
++    var proc = new Function(
++        'gl'
++      , 'wrapper'
++      , 'locations'
++      , 'return function(){return gl.getUniform(wrapper.program,locations[' + index + '])}')
++    return proc(gl, wrapper, locations)
+   }
+-  return d-1
+-}
+-exports.dimension = dimension
+ 
+-//Counts the number of vertices in faces
+-function countVertices(cells) {
+-  var vc = -1
+-    , max = Math.max
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-    for(var j=0, jl=c.length; j<jl; ++j) {
+-      vc = max(vc, c[j])
++  function makePropSetter(path, index, type) {
++    switch(type) {
++      case 'bool':
++      case 'int':
++      case 'sampler2D':
++      case 'samplerCube':
++        return 'gl.uniform1i(locations[' + index + '],obj' + path + ')'
++      case 'float':
++        return 'gl.uniform1f(locations[' + index + '],obj' + path + ')'
++      default:
++        var vidx = type.indexOf('vec')
++        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type')
++          }
++          switch(type.charAt(0)) {
++            case 'b':
++            case 'i':
++              return 'gl.uniform' + d + 'iv(locations[' + index + '],obj' + path + ')'
++            case 'v':
++              return 'gl.uniform' + d + 'fv(locations[' + index + '],obj' + path + ')'
++            default:
++              throw new GLError('', 'Unrecognized data type for vector ' + name + ': ' + type)
++          }
++        } else if(type.indexOf('mat') === 0 && type.length === 4) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
++          }
++          return 'gl.uniformMatrix' + d + 'fv(locations[' + index + '],false,obj' + path + ')'
++        } else {
++          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
++        }
++      break
+     }
+   }
+-  return vc+1
+-}
+-exports.countVertices = countVertices
+-
+-//Returns a deep copy of cells
+-function cloneCells(cells) {
+-  var ncells = new Array(cells.length)
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    ncells[i] = cells[i].slice(0)
+-  }
+-  return ncells
+-}
+-exports.cloneCells = cloneCells
+ 
+-//Ranks a pair of cells up to permutation
+-function compareCells(a, b) {
+-  var n = a.length
+-    , t = a.length - b.length
+-    , min = Math.min
+-  if(t) {
+-    return t
+-  }
+-  switch(n) {
+-    case 0:
+-      return 0;
+-    case 1:
+-      return a[0] - b[0];
+-    case 2:
+-      var d = a[0]+a[1]-b[0]-b[1]
+-      if(d) {
+-        return d
+-      }
+-      return min(a[0],a[1]) - min(b[0],b[1])
+-    case 3:
+-      var l1 = a[0]+a[1]
+-        , m1 = b[0]+b[1]
+-      d = l1+a[2] - (m1+b[2])
+-      if(d) {
+-        return d
+-      }
+-      var l0 = min(a[0], a[1])
+-        , m0 = min(b[0], b[1])
+-        , d  = min(l0, a[2]) - min(m0, b[2])
+-      if(d) {
+-        return d
++  function enumerateIndices(prefix, type) {
++    if(typeof type !== 'object') {
++      return [ [prefix, type] ]
++    }
++    var indices = []
++    for(var id in type) {
++      var prop = type[id]
++      var tprefix = prefix
++      if(parseInt(id) + '' === id) {
++        tprefix += '[' + id + ']'
++      } else {
++        tprefix += '.' + id
+       }
+-      return min(l0+a[2], l1) - min(m0+b[2], m1)
+-    
+-    //TODO: Maybe optimize n=4 as well?
+-    
+-    default:
+-      var as = a.slice(0)
+-      as.sort()
+-      var bs = b.slice(0)
+-      bs.sort()
+-      for(var i=0; i<n; ++i) {
+-        t = as[i] - bs[i]
+-        if(t) {
+-          return t
+-        }
++      if(typeof prop === 'object') {
++        indices.push.apply(indices, enumerateIndices(tprefix, prop))
++      } else {
++        indices.push([tprefix, prop])
+       }
+-      return 0
++    }
++    return indices
+   }
+-}
+-exports.compareCells = compareCells
+-
+-function compareZipped(a, b) {
+-  return compareCells(a[0], b[0])
+-}
+ 
+-//Puts a cell complex into normal order for the purposes of findCell queries
+-function normalize(cells, attr) {
+-  if(attr) {
+-    var len = cells.length
+-    var zipped = new Array(len)
+-    for(var i=0; i<len; ++i) {
+-      zipped[i] = [cells[i], attr[i]]
+-    }
+-    zipped.sort(compareZipped)
+-    for(var i=0; i<len; ++i) {
+-      cells[i] = zipped[i][0]
+-      attr[i] = zipped[i][1]
++  function makeSetter(type) {
++    var code = [ 'return function updateProperty(obj){' ]
++    var indices = enumerateIndices('', type)
++    for(var i=0; i<indices.length; ++i) {
++      var item = indices[i]
++      var path = item[0]
++      var idx  = item[1]
++      if(locations[idx]) {
++        code.push(makePropSetter(path, idx, uniforms[idx].type))
++      }
+     }
+-    return cells
+-  } else {
+-    cells.sort(compareCells)
+-    return cells
++    code.push('return obj}')
++    var proc = new Function('gl', 'locations', code.join('\n'))
++    return proc(gl, locations)
+   }
+-}
+-exports.normalize = normalize
+ 
+-//Removes all duplicate cells in the complex
+-function unique(cells) {
+-  if(cells.length === 0) {
+-    return []
++  function defaultValue(type) {
++    switch(type) {
++      case 'bool':
++        return false
++      case 'int':
++      case 'sampler2D':
++      case 'samplerCube':
++        return 0
++      case 'float':
++        return 0.0
++      default:
++        var vidx = type.indexOf('vec')
++        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type')
++          }
++          if(type.charAt(0) === 'b') {
++            return makeVector(d, false)
++          }
++          return makeVector(d, 0)
++        } else if(type.indexOf('mat') === 0 && type.length === 4) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
++          }
++          return makeVector(d*d, 0)
++        } else {
++          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
++        }
++      break
++    }
+   }
+-  var ptr = 1
+-    , len = cells.length
+-  for(var i=1; i<len; ++i) {
+-    var a = cells[i]
+-    if(compareCells(a, cells[i-1])) {
+-      if(i === ptr) {
+-        ptr++
+-        continue
++
++  function storeProperty(obj, prop, type) {
++    if(typeof type === 'object') {
++      var child = processObject(type)
++      Object.defineProperty(obj, prop, {
++        get: identity(child),
++        set: makeSetter(type),
++        enumerable: true,
++        configurable: false
++      })
++    } else {
++      if(locations[type]) {
++        Object.defineProperty(obj, prop, {
++          get: makeGetter(type),
++          set: makeSetter(type),
++          enumerable: true,
++          configurable: false
++        })
++      } else {
++        obj[prop] = defaultValue(uniforms[type].type)
+       }
+-      cells[ptr++] = a
+     }
+   }
+-  cells.length = ptr
+-  return cells
+-}
+-exports.unique = unique;
+ 
+-//Finds a cell in a normalized cell complex
+-function findCell(cells, c) {
+-  var lo = 0
+-    , hi = cells.length-1
+-    , r  = -1
+-  while (lo <= hi) {
+-    var mid = (lo + hi) >> 1
+-      , s   = compareCells(cells[mid], c)
+-    if(s <= 0) {
+-      if(s === 0) {
+-        r = mid
++  function processObject(obj) {
++    var result
++    if(Array.isArray(obj)) {
++      result = new Array(obj.length)
++      for(var i=0; i<obj.length; ++i) {
++        storeProperty(result, i, obj[i])
++      }
++    } else {
++      result = {}
++      for(var id in obj) {
++        storeProperty(result, id, obj[id])
+       }
+-      lo = mid + 1
+-    } else if(s > 0) {
+-      hi = mid - 1
+     }
++    return result
+   }
+-  return r
+-}
+-exports.findCell = findCell;
+ 
+-//Builds an index for an n-cell.  This is more general than dual, but less efficient
+-function incidence(from_cells, to_cells) {
+-  var index = new Array(from_cells.length)
+-  for(var i=0, il=index.length; i<il; ++i) {
+-    index[i] = []
++  //Return data
++  var coallesced = coallesceUniforms(uniforms, true)
++  return {
++    get: identity(processObject(coallesced)),
++    set: makeSetter(coallesced),
++    enumerable: true,
++    configurable: true
+   }
+-  var b = []
+-  for(var i=0, n=to_cells.length; i<n; ++i) {
+-    var c = to_cells[i]
+-    var cl = c.length
+-    for(var k=1, kn=(1<<cl); k<kn; ++k) {
+-      b.length = bits.popCount(k)
+-      var l = 0
+-      for(var j=0; j<cl; ++j) {
+-        if(k & (1<<j)) {
+-          b[l++] = c[j]
++}
++
++},{"./GLError":191,"./reflect":194}],194:[function(require,module,exports){
++'use strict'
++
++module.exports = makeReflectTypes
++
++//Construct type info for reflection.
++//
++// This iterates over the flattened list of uniform type values and smashes them into a JSON object.
++//
++// The leaves of the resulting object are either indices or type strings representing primitive glslify types
++function makeReflectTypes(uniforms, useIndex) {
++  var obj = {}
++  for(var i=0; i<uniforms.length; ++i) {
++    var n = uniforms[i].name
++    var parts = n.split(".")
++    var o = obj
++    for(var j=0; j<parts.length; ++j) {
++      var x = parts[j].split("[")
++      if(x.length > 1) {
++        if(!(x[0] in o)) {
++          o[x[0]] = []
+         }
+-      }
+-      var idx=findCell(from_cells, b)
+-      if(idx < 0) {
+-        continue
+-      }
+-      while(true) {
+-        index[idx++].push(i)
+-        if(idx >= from_cells.length || compareCells(from_cells[idx], b) !== 0) {
+-          break
++        o = o[x[0]]
++        for(var k=1; k<x.length; ++k) {
++          var y = parseInt(x[k])
++          if(k<x.length-1 || j<parts.length-1) {
++            if(!(y in o)) {
++              if(k < x.length-1) {
++                o[y] = []
++              } else {
++                o[y] = {}
++              }
++            }
++            o = o[y]
++          } else {
++            if(useIndex) {
++              o[y] = i
++            } else {
++              o[y] = uniforms[i].type
++            }
++          }
++        }
++      } else if(j < parts.length-1) {
++        if(!(x[0] in o)) {
++          o[x[0]] = {}
++        }
++        o = o[x[0]]
++      } else {
++        if(useIndex) {
++          o[x[0]] = i
++        } else {
++          o[x[0]] = uniforms[i].type
+         }
+       }
+     }
+   }
+-  return index
++  return obj
+ }
+-exports.incidence = incidence
++},{}],195:[function(require,module,exports){
++'use strict'
+ 
+-//Computes the dual of the mesh.  This is basically an optimized version of buildIndex for the situation where from_cells is just the list of vertices
+-function dual(cells, vertex_count) {
+-  if(!vertex_count) {
+-    return incidence(unique(skeleton(cells, 0)), cells, 0)
+-  }
+-  var res = new Array(vertex_count)
+-  for(var i=0; i<vertex_count; ++i) {
+-    res[i] = []
+-  }
+-  for(var i=0, len=cells.length; i<len; ++i) {
+-    var c = cells[i]
+-    for(var j=0, cl=c.length; j<cl; ++j) {
+-      res[c[j]].push(i)
++exports.uniforms    = runtimeUniforms
++exports.attributes  = runtimeAttributes
++
++var GL_TO_GLSL_TYPES = {
++  'FLOAT':       'float',
++  'FLOAT_VEC2':  'vec2',
++  'FLOAT_VEC3':  'vec3',
++  'FLOAT_VEC4':  'vec4',
++  'INT':         'int',
++  'INT_VEC2':    'ivec2',
++  'INT_VEC3':    'ivec3',
++  'INT_VEC4':    'ivec4',
++  'BOOL':        'bool',
++  'BOOL_VEC2':   'bvec2',
++  'BOOL_VEC3':   'bvec3',
++  'BOOL_VEC4':   'bvec4',
++  'FLOAT_MAT2':  'mat2',
++  'FLOAT_MAT3':  'mat3',
++  'FLOAT_MAT4':  'mat4',
++  'SAMPLER_2D':  'sampler2D',
++  'SAMPLER_CUBE':'samplerCube'
++}
++
++var GL_TABLE = null
++
++function getType(gl, type) {
++  if(!GL_TABLE) {
++    var typeNames = Object.keys(GL_TO_GLSL_TYPES)
++    GL_TABLE = {}
++    for(var i=0; i<typeNames.length; ++i) {
++      var tn = typeNames[i]
++      GL_TABLE[gl[tn]] = GL_TO_GLSL_TYPES[tn]
+     }
+   }
+-  return res
++  return GL_TABLE[type]
+ }
+-exports.dual = dual
+ 
+-//Enumerates all cells in the complex
+-function explode(cells) {
++function runtimeUniforms(gl, program) {
++  var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS)
+   var result = []
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-      , cl = c.length|0
+-    for(var j=1, jl=(1<<cl); j<jl; ++j) {
+-      var b = []
+-      for(var k=0; k<cl; ++k) {
+-        if((j >>> k) & 1) {
+-          b.push(c[k])
++  for(var i=0; i<numUniforms; ++i) {
++    var info = gl.getActiveUniform(program, i)
++    if(info) {
++      var type = getType(gl, info.type)
++      if(info.size > 1) {
++        for(var j=0; j<info.size; ++j) {
++          result.push({
++            name: info.name.replace('[0]', '[' + j + ']'),
++            type: type
++          })
+         }
++      } else {
++        result.push({
++          name: info.name,
++          type: type
++        })
+       }
+-      result.push(b)
+     }
+   }
+-  return normalize(result)
++  return result
+ }
+-exports.explode = explode
+ 
+-//Enumerates all of the n-cells of a cell complex
+-function skeleton(cells, n) {
+-  if(n < 0) {
+-    return []
+-  }
++function runtimeAttributes(gl, program) {
++  var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES)
+   var result = []
+-    , k0     = (1<<(n+1))-1
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var k=k0; k<(1<<c.length); k=bits.nextCombination(k)) {
+-      var b = new Array(n+1)
+-        , l = 0
+-      for(var j=0; j<c.length; ++j) {
+-        if(k & (1<<j)) {
+-          b[l++] = c[j]
+-        }
+-      }
+-      result.push(b)
++  for(var i=0; i<numAttributes; ++i) {
++    var info = gl.getActiveAttrib(program, i)
++    if(info) {
++      result.push({
++        name: info.name,
++        type: getType(gl, info.type)
++      })
+     }
+   }
+-  return normalize(result)
++  return result
+ }
+-exports.skeleton = skeleton;
+ 
+-//Computes the boundary of all cells, does not remove duplicates
+-function boundary(cells) {
+-  var res = []
+-  for(var i=0,il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-    for(var j=0,cl=c.length; j<cl; ++j) {
+-      var b = new Array(c.length-1)
+-      for(var k=0, l=0; k<cl; ++k) {
+-        if(k !== j) {
+-          b[l++] = c[k]
+-        }
+-      }
+-      res.push(b)
+-    }
+-  }
+-  return normalize(res)
++},{}],196:[function(require,module,exports){
++'use strict'
++
++exports.shader   = getShaderReference
++exports.program  = createProgram
++
++var GLError = require("./GLError")
++var formatCompilerError = require('gl-format-compiler-error');
++
++var weakMap = typeof WeakMap === 'undefined' ? require('weakmap-shim') : WeakMap
++var CACHE = new weakMap()
++
++var SHADER_COUNTER = 0
++
++function ShaderReference(id, src, type, shader, programs, count, cache) {
++  this.id       = id
++  this.src      = src
++  this.type     = type
++  this.shader   = shader
++  this.count    = count
++  this.programs = []
++  this.cache    = cache
+ }
+-exports.boundary = boundary;
+ 
+-//Computes connected components for a dense cell complex
+-function connectedComponents_dense(cells, vertex_count) {
+-  var labels = new UnionFind(vertex_count)
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      for(var k=j+1; k<c.length; ++k) {
+-        labels.link(c[j], c[k])
++ShaderReference.prototype.dispose = function() {
++  if(--this.count === 0) {
++    var cache    = this.cache
++    var gl       = cache.gl
++
++    //Remove program references
++    var programs = this.programs
++    for(var i=0, n=programs.length; i<n; ++i) {
++      var p = cache.programs[programs[i]]
++      if(p) {
++        delete cache.programs[i]
++        gl.deleteProgram(p)
+       }
+     }
++
++    //Remove shader reference
++    gl.deleteShader(this.shader)
++    delete cache.shaders[(this.type === gl.FRAGMENT_SHADER)|0][this.src]
+   }
+-  var components = []
+-    , component_labels = labels.ranks
+-  for(var i=0; i<component_labels.length; ++i) {
+-    component_labels[i] = -1
+-  }
+-  for(var i=0; i<cells.length; ++i) {
+-    var l = labels.find(cells[i][0])
+-    if(component_labels[l] < 0) {
+-      component_labels[l] = components.length
+-      components.push([cells[i].slice(0)])
+-    } else {
+-      components[component_labels[l]].push(cells[i].slice(0))
++}
++
++function ContextCache(gl) {
++  this.gl       = gl
++  this.shaders  = [{}, {}]
++  this.programs = {}
++}
++
++var proto = ContextCache.prototype
++
++function compileShader(gl, type, src) {
++  var shader = gl.createShader(type)
++  gl.shaderSource(shader, src)
++  gl.compileShader(shader)
++  if(!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
++    var errLog = gl.getShaderInfoLog(shader)
++    try {
++        var fmt = formatCompilerError(errLog, src, type);
++    } catch (e){
++        console.warn('Failed to format compiler error: ' + e);
++        throw new GLError(errLog, 'Error compiling shader:\n' + errLog)
+     }
++    throw new GLError(errLog, fmt.short, fmt.long)
+   }
+-  return components
++  return shader
+ }
+ 
+-//Computes connected components for a sparse graph
+-function connectedComponents_sparse(cells) {
+-  var vertices  = unique(normalize(skeleton(cells, 0)))
+-    , labels    = new UnionFind(vertices.length)
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      var vj = findCell(vertices, [c[j]])
+-      for(var k=j+1; k<c.length; ++k) {
+-        labels.link(vj, findCell(vertices, [c[k]]))
+-      }
+-    }
++proto.getShaderReference = function(type, src) {
++  var gl      = this.gl
++  var shaders = this.shaders[(type === gl.FRAGMENT_SHADER)|0]
++  var shader  = shaders[src]
++  if(!shader || !gl.isShader(shader.shader)) {
++    var shaderObj = compileShader(gl, type, src)
++    shader = shaders[src] = new ShaderReference(
++      SHADER_COUNTER++,
++      src,
++      type,
++      shaderObj,
++      [],
++      1,
++      this)
++  } else {
++    shader.count += 1
+   }
+-  var components        = []
+-    , component_labels  = labels.ranks
+-  for(var i=0; i<component_labels.length; ++i) {
+-    component_labels[i] = -1
++  return shader
++}
++
++function linkProgram(gl, vshader, fshader, attribs, locations) {
++  var program = gl.createProgram()
++  gl.attachShader(program, vshader)
++  gl.attachShader(program, fshader)
++  for(var i=0; i<attribs.length; ++i) {
++    gl.bindAttribLocation(program, locations[i], attribs[i])
+   }
+-  for(var i=0; i<cells.length; ++i) {
+-    var l = labels.find(findCell(vertices, [cells[i][0]]));
+-    if(component_labels[l] < 0) {
+-      component_labels[l] = components.length
+-      components.push([cells[i].slice(0)])
+-    } else {
+-      components[component_labels[l]].push(cells[i].slice(0))
+-    }
++  gl.linkProgram(program)
++  if(!gl.getProgramParameter(program, gl.LINK_STATUS)) {
++    var errLog = gl.getProgramInfoLog(program)
++    throw new GLError(errLog, 'Error linking program: ' + errLog)
+   }
+-  return components
++  return program
+ }
+ 
+-//Computes connected components for a cell complex
+-function connectedComponents(cells, vertex_count) {
+-  if(vertex_count) {
+-    return connectedComponents_dense(cells, vertex_count)
++proto.getProgram = function(vref, fref, attribs, locations) {
++  var token = [vref.id, fref.id, attribs.join(':'), locations.join(':')].join('@')
++  var prog  = this.programs[token]
++  if(!prog || !this.gl.isProgram(prog)) {
++    this.programs[token] = prog = linkProgram(
++      this.gl,
++      vref.shader,
++      fref.shader,
++      attribs,
++      locations)
++    vref.programs.push(token)
++    fref.programs.push(token)
+   }
+-  return connectedComponents_sparse(cells)
++  return prog
+ }
+-exports.connectedComponents = connectedComponents
+-
+-},{"bit-twiddle":242,"union-find":243}],245:[function(require,module,exports){
+-"use strict"
+ 
+-function iota(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = i
++function getCache(gl) {
++  var ctxCache = CACHE.get(gl)
++  if(!ctxCache) {
++    ctxCache = new ContextCache(gl)
++    CACHE.set(gl, ctxCache)
+   }
+-  return result
++  return ctxCache
+ }
+ 
+-module.exports = iota
+-},{}],246:[function(require,module,exports){
+-/**
+- * Determine if an object is Buffer
+- *
+- * Author:   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+- * License:  MIT
+- *
+- * `npm install is-buffer`
+- */
++function getShaderReference(gl, type, src) {
++  return getCache(gl).getShaderReference(type, src)
++}
+ 
+-module.exports = function (obj) {
+-  return !!(obj != null &&
+-    (obj._isBuffer || // For Safari 5-7 (missing Object.prototype.constructor)
+-      (obj.constructor &&
+-      typeof obj.constructor.isBuffer === 'function' &&
+-      obj.constructor.isBuffer(obj))
+-    ))
++function createProgram(gl, vref, fref, attribs, locations) {
++  return getCache(gl).getProgram(vref, fref, attribs, locations)
+ }
+ 
+-},{}],247:[function(require,module,exports){
+-'use strict';
++},{"./GLError":191,"gl-format-compiler-error":129,"weakmap-shim":468}],197:[function(require,module,exports){
++'use strict'
+ 
+-var featureFilter = require('feature-filter');
+-var Buffer = require('./buffer');
+-var util = require('../util/util');
+-var StructArrayType = require('../util/struct_array');
+-var VertexArrayObject = require('../render/vertex_array_object');
++module.exports = createSpikes2D
+ 
+-module.exports = Bucket;
++function GLSpikes2D(plot) {
++  this.plot = plot
++  this.enable = [true, true, false, false]
++  this.width  = [1, 1, 1, 1]
++  this.color  = [[0,0,0,1],
++                 [0,0,0,1],
++                 [0,0,0,1],
++                 [0,0,0,1]]
++  this.center = [Infinity, Infinity]
++}
+ 
+-/**
+- * Instantiate the appropriate subclass of `Bucket` for `options`.
+- * @private
+- * @param options See `Bucket` constructor options
+- * @returns {Bucket}
+- */
+-Bucket.create = function(options) {
+-    var Classes = {
+-        fill: require('./bucket/fill_bucket'),
+-        line: require('./bucket/line_bucket'),
+-        circle: require('./bucket/circle_bucket'),
+-        symbol: require('./bucket/symbol_bucket')
+-    };
+-    return new Classes[options.layer.type](options);
+-};
++var proto = GLSpikes2D.prototype
+ 
++proto.update = function(options) {
++  options = options || {}
++  this.enable = (options.enable || [true,true,false,false]).slice()
++  this.width  = (options.width || [1,1,1,1]).slice()
++  this.color  = (options.color || [
++                  [0,0,0,1],
++                  [0,0,0,1],
++                  [0,0,0,1],
++                  [0,0,0,1]]).map(function(x) { return x.slice() })
++  this.center = (options.center || [Infinity,Infinity]).slice()
++  this.plot.setOverlayDirty()
++}
+ 
+-/**
+- * The maximum extent of a feature that can be safely stored in the buffer.
+- * In practice, all features are converted to this extent before being added.
+- *
+- * Positions are stored as signed 16bit integers.
+- * One bit is lost for signedness to support featuers extending past the left edge of the tile.
+- * One bit is lost because the line vertex buffer packs 1 bit of other data into the int.
+- * One bit is lost to support features extending past the extent on the right edge of the tile.
+- * This leaves us with 2^13 = 8192
+- *
+- * @private
+- * @readonly
+- */
+-Bucket.EXTENT = 8192;
++proto.draw = function() {
++  var spikeEnable = this.enable
++  var spikeWidth  = this.width
++  var spikeColor  = this.color
++  var spikeCenter = this.center
++  var plot        = this.plot
++  var line        = plot.line
+ 
+-/**
+- * The `Bucket` class is the single point of knowledge about turning vector
+- * tiles into WebGL buffers.
+- *
+- * `Bucket` is an abstract class. A subclass exists for each Mapbox GL
+- * style spec layer type. Because `Bucket` is an abstract class,
+- * instances should be created via the `Bucket.create` method.
+- *
+- * @class Bucket
+- * @private
+- * @param options
+- * @param {number} options.zoom Zoom level of the buffers being built. May be
+- *     a fractional zoom level.
+- * @param options.layer A Mapbox GL style layer object
+- * @param {Object.<string, Buffer>} options.buffers The set of `Buffer`s being
+- *     built for this tile. This object facilitates sharing of `Buffer`s be
+-       between `Bucket`s.
+- */
+-function Bucket(options) {
+-    this.zoom = options.zoom;
+-    this.overscaling = options.overscaling;
+-    this.layer = options.layer;
+-    this.childLayers = options.childLayers;
++  var dataBox     = plot.dataBox
++  var viewPixels  = plot.viewBox
+ 
+-    this.type = this.layer.type;
+-    this.features = [];
+-    this.id = this.layer.id;
+-    this.index = options.index;
+-    this.sourceLayer = this.layer.sourceLayer;
+-    this.sourceLayerIndex = options.sourceLayerIndex;
+-    this.minZoom = this.layer.minzoom;
+-    this.maxZoom = this.layer.maxzoom;
++  line.bind()
+ 
+-    this.paintAttributes = createPaintAttributes(this);
++  if(dataBox[0] <= spikeCenter[0] && spikeCenter[0] <= dataBox[2] &&
++     dataBox[1] <= spikeCenter[1] && spikeCenter[1] <= dataBox[3]) {
+ 
+-    if (options.arrays) {
+-        var childLayers = this.childLayers;
+-        this.bufferGroups = util.mapObject(options.arrays, function(programArrayGroups, programName) {
+-            return programArrayGroups.map(function(programArrayGroup) {
++    var centerX = viewPixels[0] + (spikeCenter[0] - dataBox[0]) / (dataBox[2] - dataBox[0]) * (viewPixels[2] - viewPixels[0])
++    var centerY = viewPixels[1] + (spikeCenter[1] - dataBox[1]) / (dataBox[3] - dataBox[1]) * (viewPixels[3] - viewPixels[1])
+ 
+-                var group = util.mapObject(programArrayGroup, function(arrays, layoutOrPaint) {
+-                    return util.mapObject(arrays, function(array, name) {
+-                        var arrayType = options.arrayTypes[programName][layoutOrPaint][name];
+-                        var type = (arrayType.members.length && arrayType.members[0].name === 'vertices' ? Buffer.BufferType.ELEMENT : Buffer.BufferType.VERTEX);
+-                        return new Buffer(array, arrayType, type);
+-                    });
+-                });
++    if(spikeEnable[0]) {
++     line.drawLine(
++       centerX, centerY,
++       viewPixels[0], centerY,
++       spikeWidth[0], spikeColor[0])
++    }
++    if(spikeEnable[1]) {
++     line.drawLine(
++       centerX, centerY,
++       centerX, viewPixels[1],
++       spikeWidth[1], spikeColor[1])
++    }
++    if(spikeEnable[2]) {
++      line.drawLine(
++        centerX, centerY,
++        viewPixels[2], centerY,
++        spikeWidth[2], spikeColor[2])
++    }
++    if(spikeEnable[3]) {
++      line.drawLine(
++        centerX, centerY,
++        centerX, viewPixels[3],
++        spikeWidth[3], spikeColor[3])
++    }
++  }
++}
+ 
+-                group.vaos = {};
+-                if (group.layout.element2) group.secondVaos = {};
+-                for (var l = 0; l < childLayers.length; l++) {
+-                    var layerName = childLayers[l].id;
+-                    group.vaos[layerName] = new VertexArrayObject();
+-                    if (group.layout.element2) group.secondVaos[layerName] = new VertexArrayObject();
+-                }
++proto.dispose = function() {
++  this.plot.removeOverlay(this)
++}
+ 
+-                return group;
+-            });
+-        });
+-    }
++function createSpikes2D(plot, options) {
++  var spikes = new GLSpikes2D(plot)
++  spikes.update(options)
++  plot.addOverlay(spikes)
++  return spikes
+ }
+ 
+-/**
+- * Build the buffers! Features are set directly to the `features` property.
+- * @private
+- */
+-Bucket.prototype.populateBuffers = function() {
+-    this.createArrays();
+-    this.recalculateStyleLayers();
++},{}],198:[function(require,module,exports){
++'use strict'
+ 
+-    for (var i = 0; i < this.features.length; i++) {
+-        this.addFeature(this.features[i]);
+-    }
+ 
+-    this.trimArrays();
+-};
++var createShader = require('gl-shader')
+ 
+-/**
+- * Check if there is enough space available in the current element group for
+- * `vertexLength` vertices. If not, append a new elementGroup. Should be called
+- * by `populateBuffers` and its callees.
+- * @private
+- * @param {string} programName the name of the program associated with the buffer that will receive the vertices
+- * @param {number} vertexLength The number of vertices that will be inserted to the buffer.
+- */
+-Bucket.prototype.makeRoomFor = function(programName, numVertices) {
+-    var groups = this.arrayGroups[programName];
+-    var currentGroup = groups.length && groups[groups.length - 1];
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, color;\nattribute float weight;\n\nuniform mat4 model, view, projection;\nuniform vec3 coordinates[3];\nuniform vec4 colors[3];\nuniform vec2 screenShape;\nuniform float lineWidth;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vertexPosition = mix(coordinates[0],\n    mix(coordinates[2], coordinates[1], 0.5 * (position + 1.0)), abs(position));\n\n  vec4 clipPos = projection * view * model * vec4(vertexPosition, 1.0);\n  vec2 clipOffset = (projection * view * model * vec4(color, 0.0)).xy;\n  vec2 delta = weight * clipOffset * screenShape;\n  vec2 lineOffset = normalize(vec2(delta.y, -delta.x)) / screenShape;\n\n  gl_Position   = vec4(clipPos.xy + clipPos.w * 0.5 * lineWidth * lineOffset, clipPos.z, clipPos.w);\n  fragColor     = color.x * colors[0] + color.y * colors[1] + color.z * colors[2];\n}\n"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragColor;\n\nvoid main() {\n  gl_FragColor = fragColor;\n}"
+ 
+-    if (!currentGroup || currentGroup.layout.vertex.length + numVertices > 65535) {
++module.exports = function(gl) {
++  return createShader(gl, vertSrc, fragSrc, null, [
++    {name: 'position', type: 'vec3'},
++    {name: 'color', type: 'vec3'},
++    {name: 'weight', type: 'float'}
++  ])
++}
+ 
+-        var arrayTypes = this.arrayTypes[programName];
+-        var VertexArrayType = arrayTypes.layout.vertex;
+-        var ElementArrayType = arrayTypes.layout.element;
+-        var ElementArrayType2 = arrayTypes.layout.element2;
++},{"gl-shader":190}],199:[function(require,module,exports){
++'use strict'
+ 
+-        currentGroup = {
+-            index: groups.length,
+-            layout: {},
+-            paint: {}
+-        };
++var createBuffer = require('gl-buffer')
++var createVAO = require('gl-vao')
++var createShader = require('./shaders/index')
+ 
+-        currentGroup.layout.vertex = new VertexArrayType();
+-        if (ElementArrayType) currentGroup.layout.element = new ElementArrayType();
+-        if (ElementArrayType2) currentGroup.layout.element2 = new ElementArrayType2();
++module.exports = createSpikes
+ 
+-        for (var i = 0; i < this.childLayers.length; i++) {
+-            var layerName = this.childLayers[i].id;
+-            var PaintVertexArrayType = arrayTypes.paint[layerName];
+-            currentGroup.paint[layerName] = new PaintVertexArrayType();
+-        }
++var identity = [1,0,0,0,
++                0,1,0,0,
++                0,0,1,0,
++                0,0,0,1]
+ 
+-        groups.push(currentGroup);
+-    }
++function AxisSpikes(gl, buffer, vao, shader) {
++  this.gl         = gl
++  this.buffer     = buffer
++  this.vao        = vao
++  this.shader     = shader
++  this.pixelRatio = 1
++  this.bounds     = [[-1000,-1000,-1000], [1000,1000,1000]]
++  this.position   = [0,0,0]
++  this.lineWidth  = [2,2,2]
++  this.colors     = [[0,0,0,1], [0,0,0,1], [0,0,0,1]]
++  this.enabled    = [true,true,true]
++  this.drawSides  = [true,true,true]
++  this.axes       = null
++}
+ 
+-    return currentGroup;
+-};
++var proto = AxisSpikes.prototype
+ 
+-/**
+- * Start using a new shared `buffers` object and recreate instances of `Buffer`
+- * as necessary.
+- * @private
+- */
+-Bucket.prototype.createArrays = function() {
+-    this.arrayGroups = {};
+-    this.arrayTypes = {};
++var OUTER_FACE = [0,0,0]
++var INNER_FACE = [0,0,0]
+ 
+-    for (var programName in this.programInterfaces) {
+-        var programInterface = this.programInterfaces[programName];
+-        var programArrayTypes = this.arrayTypes[programName] = { layout: {}, paint: {} };
+-        this.arrayGroups[programName] = [];
++var SHAPE = [0,0]
+ 
+-        if (programInterface.vertexBuffer) {
+-            var VertexArrayType = new StructArrayType({
+-                members: this.programInterfaces[programName].layoutAttributes,
+-                alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
+-            });
++proto.isTransparent = function() {
++  return false
++}
+ 
+-            programArrayTypes.layout.vertex = VertexArrayType;
++proto.drawTransparent = function(camera) {}
+ 
+-            var layerPaintAttributes = this.paintAttributes[programName];
+-            for (var layerName in layerPaintAttributes) {
+-                var PaintVertexArrayType = new StructArrayType({
+-                    members: layerPaintAttributes[layerName].attributes,
+-                    alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
+-                });
++proto.draw = function(camera) {
++  var gl = this.gl
++  var vao = this.vao
++  var shader = this.shader
+ 
+-                programArrayTypes.paint[layerName] = PaintVertexArrayType;
+-            }
+-        }
++  vao.bind()
++  shader.bind()
+ 
+-        if (programInterface.elementBuffer) {
+-            var ElementArrayType = createElementBufferType(programInterface.elementBufferComponents);
+-            programArrayTypes.layout.element = ElementArrayType;
+-        }
++  var model      = camera.model || identity
++  var view       = camera.view || identity
++  var projection = camera.projection || identity
+ 
+-        if (programInterface.elementBuffer2) {
+-            var ElementArrayType2 = createElementBufferType(programInterface.elementBuffer2Components);
+-            programArrayTypes.layout.element2 = ElementArrayType2;
+-        }
+-    }
+-};
++  var axis
++  if(this.axes) {
++    axis = this.axes.lastCubeProps.axis
++  }
+ 
+-Bucket.prototype.destroy = function(gl) {
+-    for (var programName in this.bufferGroups) {
+-        var programBufferGroups = this.bufferGroups[programName];
+-        for (var i = 0; i < programBufferGroups.length; i++) {
+-            var programBuffers = programBufferGroups[i];
+-            for (var paintBuffer in programBuffers.paint) {
+-                programBuffers.paint[paintBuffer].destroy(gl);
+-            }
+-            for (var layoutBuffer in programBuffers.layout) {
+-                programBuffers.layout[layoutBuffer].destroy(gl);
+-            }
+-            for (var j in programBuffers.vaos) {
+-                programBuffers.vaos[j].destroy(gl);
+-            }
+-            for (var k in programBuffers.secondVaos) {
+-                programBuffers.secondVaos[k].destroy(gl);
+-            }
+-        }
++  var outerFace = OUTER_FACE
++  var innerFace = INNER_FACE
++  for(var i=0; i<3; ++i) {
++    if(axis && axis[i] < 0) {
++      outerFace[i] = this.bounds[0][i]
++      innerFace[i] = this.bounds[1][i]
++    } else {
++      outerFace[i] = this.bounds[1][i]
++      innerFace[i] = this.bounds[0][i]
+     }
++  }
+ 
+-};
++  SHAPE[0] = gl.drawingBufferWidth
++  SHAPE[1] = gl.drawingBufferHeight
+ 
+-Bucket.prototype.trimArrays = function() {
+-    for (var programName in this.arrayGroups) {
+-        var programArrays = this.arrayGroups[programName];
+-        for (var paintArray in programArrays.paint) {
+-            programArrays.paint[paintArray].trim();
+-        }
+-        for (var layoutArray in programArrays.layout) {
+-            programArrays.layout[layoutArray].trim();
+-        }
+-    }
+-};
++  shader.uniforms.model       = model
++  shader.uniforms.view        = view
++  shader.uniforms.projection  = projection
++  shader.uniforms.coordinates = [this.position, outerFace, innerFace]
++  shader.uniforms.colors      = this.colors
++  shader.uniforms.screenShape = SHAPE
+ 
+-Bucket.prototype.setUniforms = function(gl, programName, program, layer, globalProperties) {
+-    var uniforms = this.paintAttributes[programName][layer.id].uniforms;
+-    for (var i = 0; i < uniforms.length; i++) {
+-        var uniform = uniforms[i];
+-        var uniformLocation = program[uniform.name];
+-        gl['uniform' + uniform.components + 'fv'](uniformLocation, uniform.getValue(layer, globalProperties));
++  for(var i=0; i<3; ++i) {
++    shader.uniforms.lineWidth = this.lineWidth[i] * this.pixelRatio
++    if(this.enabled[i]) {
++      vao.draw(gl.TRIANGLES, 6, 6*i)
++      if(this.drawSides[i]) {
++        vao.draw(gl.TRIANGLES, 12, 18+12*i)
++      }
+     }
+-};
++  }
+ 
+-Bucket.prototype.serialize = function() {
+-    return {
+-        layerId: this.layer.id,
+-        zoom: this.zoom,
+-        arrays: util.mapObject(this.arrayGroups, function(programArrayGroups) {
+-            return programArrayGroups.map(function(arrayGroup) {
+-                return util.mapObject(arrayGroup, function(arrays) {
+-                    return util.mapObject(arrays, function(array) {
+-                        return array.serialize();
+-                    });
+-                });
+-            });
+-        }),
+-        arrayTypes: util.mapObject(this.arrayTypes, function(programArrayTypes) {
+-            return util.mapObject(programArrayTypes, function(arrayTypes) {
+-                return util.mapObject(arrayTypes, function(arrayType) {
+-                    return arrayType.serialize();
+-                });
+-            });
+-        }),
++  vao.unbind()
++}
+ 
+-        childLayerIds: this.childLayers.map(function(layer) {
+-            return layer.id;
+-        })
+-    };
+-};
++proto.update = function(options) {
++  if(!options) {
++    return
++  }
++  if("bounds" in options) {
++    this.bounds = options.bounds
++  }
++  if("position" in options) {
++    this.position = options.position
++  }
++  if("lineWidth" in options) {
++    this.lineWidth = options.lineWidth
++  }
++  if("colors" in options) {
++    this.colors = options.colors
++  }
++  if("enabled" in options) {
++    this.enabled = options.enabled
++  }
++  if("drawSides" in options) {
++    this.drawSides = options.drawSides
++  }
++}
+ 
+-Bucket.prototype.createFilter = function() {
+-    if (!this.filter) {
+-        this.filter = featureFilter(this.layer.filter);
+-    }
+-};
++proto.dispose = function() {
++  this.vao.dispose()
++  this.buffer.dispose()
++  this.shader.dispose()
++}
+ 
+-var FAKE_ZOOM_HISTORY = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
+-Bucket.prototype.recalculateStyleLayers = function() {
+-    for (var i = 0; i < this.childLayers.length; i++) {
+-        this.childLayers[i].recalculate(this.zoom, FAKE_ZOOM_HISTORY);
+-    }
+-};
+ 
+-Bucket.prototype.getProgramMacros = function(programInterface, layer) {
+-    var macros = [];
+-    var attributes = this.paintAttributes[programInterface][layer.id].attributes;
+-    for (var i = 0; i < attributes.length; i++) {
+-        var attribute = attributes[i];
+-        macros.push('ATTRIBUTE_' + (attribute.isFunction ? 'ZOOM_FUNCTION_' : '') + attribute.name.toUpperCase());
+-    }
+-    return macros;
+-};
+ 
+-Bucket.prototype.addPaintAttributes = function(interfaceName, globalProperties, featureProperties, startGroup, startIndex) {
+-    for (var l = 0; l < this.childLayers.length; l++) {
+-        var layer = this.childLayers[l];
+-        var groups = this.arrayGroups[interfaceName];
+-        for (var g = startGroup.index; g < groups.length; g++) {
+-            var group = groups[g];
+-            var length = group.layout.vertex.length;
+-            var vertexArray = group.paint[layer.id];
+-            vertexArray.resize(length);
++function createSpikes(gl, options) {
++  //Create buffers
++  var data = [ ]
+ 
+-            var attributes = this.paintAttributes[interfaceName][layer.id].attributes;
+-            for (var m = 0; m < attributes.length; m++) {
+-                var attribute = attributes[m];
++  function line(x,y,z,i,l,h) {
++    var row = [x,y,z,  0,0,0,  1]
++    row[i+3] = 1
++    row[i] = l
++    data.push.apply(data, row)
++    row[6] = -1
++    data.push.apply(data, row)
++    row[i] = h
++    data.push.apply(data, row)
++    data.push.apply(data, row)
++    row[6] = 1
++    data.push.apply(data, row)
++    row[i] = l
++    data.push.apply(data, row)
++  }
+ 
+-                var value = attribute.getValue(layer, globalProperties, featureProperties);
+-                var multiplier = attribute.multiplier || 1;
+-                var components = attribute.components || 1;
++  line(0,0,0, 0, 0, 1)
++  line(0,0,0, 1, 0, 1)
++  line(0,0,0, 2, 0, 1)
+ 
+-                for (var i = startIndex; i < length; i++) {
+-                    var vertex = vertexArray.get(i);
+-                    for (var c = 0; c < components; c++) {
+-                        var memberName = components > 1 ? (attribute.name + c) : attribute.name;
+-                        vertex[memberName] = value[c] * multiplier;
+-                    }
+-                }
+-            }
+-        }
+-    }
+-};
++  line(1,0,0,  1,  -1,1)
++  line(1,0,0,  2,  -1,1)
+ 
+-function createElementBufferType(components) {
+-    return new StructArrayType({
+-        members: [{
+-            type: Buffer.ELEMENT_ATTRIBUTE_TYPE,
+-            name: 'vertices',
+-            components: components || 3
+-        }]
+-    });
+-}
++  line(0,1,0,  0,  -1,1)
++  line(0,1,0,  2,  -1,1)
+ 
+-function createPaintAttributes(bucket) {
+-    var attributes = {};
+-    for (var interfaceName in bucket.programInterfaces) {
+-        var layerPaintAttributes = attributes[interfaceName] = {};
++  line(0,0,1,  0,  -1,1)
++  line(0,0,1,  1,  -1,1)
+ 
+-        for (var c = 0; c < bucket.childLayers.length; c++) {
+-            var childLayer = bucket.childLayers[c];
+-            layerPaintAttributes[childLayer.id] = { attributes: [], uniforms: [] };
+-        }
++  var buffer = createBuffer(gl, data)
++  var vao = createVAO(gl, [{
++    type: gl.FLOAT,
++    buffer: buffer,
++    size: 3,
++    offset: 0,
++    stride: 28
++  }, {
++    type: gl.FLOAT,
++    buffer: buffer,
++    size: 3,
++    offset: 12,
++    stride: 28
++  }, {
++    type: gl.FLOAT,
++    buffer: buffer,
++    size: 1,
++    offset: 24,
++    stride: 28
++  }])
+ 
+-        var interface_ = bucket.programInterfaces[interfaceName];
+-        if (!interface_.paintAttributes) continue;
+-        for (var i = 0; i < interface_.paintAttributes.length; i++) {
+-            var attribute = interface_.paintAttributes[i];
++  //Create shader
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location = 1
++  shader.attributes.weight.location = 2
+ 
+-            for (var j = 0; j < bucket.childLayers.length; j++) {
+-                var layer = bucket.childLayers[j];
+-                var paintAttributes = layerPaintAttributes[layer.id];
++  //Create spike object
++  var spikes = new AxisSpikes(gl, buffer, vao, shader)
+ 
+-                if (layer.isPaintValueFeatureConstant(attribute.paintProperty)) {
+-                    paintAttributes.uniforms.push(attribute);
+-                } else if (layer.isPaintValueZoomConstant(attribute.paintProperty)) {
+-                    paintAttributes.attributes.push(attribute);
+-                } else {
++  //Set parameters
++  spikes.update(options)
+ 
+-                    var zoomLevels = layer.getPaintValueStopZoomLevels(attribute.paintProperty);
++  //Return resulting object
++  return spikes
++}
+ 
+-                    // Pick the index of the first offset to add to the buffers.
+-                    // Find the four closest stops, ideally with two on each side of the zoom level.
+-                    var numStops = 0;
+-                    while (numStops < zoomLevels.length && zoomLevels[numStops] < bucket.zoom) numStops++;
+-                    var stopOffset = Math.max(0, Math.min(zoomLevels.length - 4, numStops - 2));
++},{"./shaders/index":198,"gl-buffer":121,"gl-vao":206}],200:[function(require,module,exports){
++var createShader = require('gl-shader')
+ 
+-                    var fourZoomLevels = [];
+-                    for (var s = 0; s < 4; s++) {
+-                        fourZoomLevels.push(zoomLevels[Math.min(stopOffset + s, zoomLevels.length - 1)]);
+-                    }
+ 
+-                    var components = attribute.components;
+-                    if (components === 1) {
+-                        paintAttributes.attributes.push(util.extend({}, attribute, {
+-                            getValue: createFunctionGetValue(attribute, fourZoomLevels),
+-                            isFunction: true,
+-                            components: components * 4
+-                        }));
+-                    } else {
+-                        for (var k = 0; k < 4; k++) {
+-                            paintAttributes.attributes.push(util.extend({}, attribute, {
+-                                getValue: createFunctionGetValue(attribute, [fourZoomLevels[k]]),
+-                                isFunction: true,
+-                                name: attribute.name + k
+-                            }));
+-                        }
+-                    }
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute vec3 f;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection, inverseModel;\nuniform vec3 lightPosition, eyePosition;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  worldCoordinate = vec3(uv.zw, f.x);\n  vec4 worldPosition = model * vec4(worldCoordinate, 1.0);\n  vec4 clipPosition = projection * view * worldPosition;\n  gl_Position = clipPosition;\n  kill = f.y;\n  value = f.z;\n  planeCoordinate = uv.xy;\n\n  //Lighting geometry parameters\n  vec4 cameraCoordinate = view * worldPosition;\n  cameraCoordinate.xyz /= cameraCoordinate.w;\n  lightDirection = lightPosition - cameraCoordinate.xyz;\n  eyeDirection   = eyePosition - cameraCoordinate.xyz;\n  surfaceNormal  = normalize((vec4(normal,0) * inverseModel).xyz);\n}\n"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat beckmannSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness) {\n  return beckmannDistribution_2_0(dot(surfaceNormal, normalize(lightDirection + viewDirection)), roughness);\n}\n\n\n\nuniform vec3 lowerBound, upperBound;\nuniform float contourTint;\nuniform vec4 contourColor;\nuniform sampler2D colormap;\nuniform vec3 clipBounds[2];\nuniform float roughness, fresnel, kambient, kdiffuse, kspecular, opacity;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(surfaceNormal);\n  vec3 V = normalize(eyeDirection);\n  vec3 L = normalize(lightDirection);\n\n  if(gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = beckmannSpecular_1_1(L, V, N, roughness);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = texture2D(colormap, vec2(value, value));\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = mix(litColor, contourColor, contourTint) * opacity;\n}\n"
++var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute float f;\n\nuniform mat3 permutation;\nuniform mat4 model, view, projection;\nuniform float height, zOffset;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  vec3 dataCoordinate = permutation * vec3(uv.xy, height);\n  vec4 worldPosition = model * vec4(dataCoordinate, 1.0);\n\n  vec4 clipPosition = projection * view * worldPosition;\n  clipPosition.z = clipPosition.z + zOffset;\n\n  gl_Position = clipPosition;\n  value = f;\n  kill = -1.0;\n  worldCoordinate = dataCoordinate;\n  planeCoordinate = uv.zw;\n\n  //Don't do lighting for contours\n  surfaceNormal   = vec3(1,0,0);\n  eyeDirection    = vec3(0,1,0);\n  lightDirection  = vec3(0,0,1);\n}\n"
++var pickSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec2 shape;\nuniform vec3 clipBounds[2];\nuniform float pickId;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 surfaceNormal;\n\nvec2 splitFloat(float v) {\n  float vh = 255.0 * v;\n  float upper = floor(vh);\n  float lower = fract(vh);\n  return vec2(upper / 255.0, floor(lower * 16.0) / 16.0);\n}\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n  vec2 ux = splitFloat(planeCoordinate.x / shape.x);\n  vec2 uy = splitFloat(planeCoordinate.y / shape.y);\n  gl_FragColor = vec4(pickId, ux.x, uy.x, ux.y + (uy.y/16.0));\n}\n"
+ 
+-                    paintAttributes.uniforms.push(util.extend({}, attribute, {
+-                        name: 'u_' + attribute.name.slice(2) + '_t',
+-                        getValue: createGetUniform(attribute, stopOffset),
+-                        components: 1
+-                    }));
+-                }
+-            }
+-        }
+-    }
+-    return attributes;
++exports.createShader = function (gl) {
++  var shader = createShader(gl, vertSrc, fragSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'vec3'},
++    {name: 'normal', type: 'vec3'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  shader.attributes.normal.location = 2
++  return shader
+ }
+-
+-function createFunctionGetValue(attribute, stopZoomLevels) {
+-    return function(layer, globalProperties, featureProperties) {
+-        if (stopZoomLevels.length === 1) {
+-            // return one multi-component value like color0
+-            return attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevels[0] }), featureProperties);
+-        } else {
+-            // pack multiple single-component values into a four component attribute
+-            var values = [];
+-            for (var z = 0; z < stopZoomLevels.length; z++) {
+-                var stopZoomLevel = stopZoomLevels[z];
+-                values.push(attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevel }), featureProperties)[0]);
+-            }
+-            return values;
+-        }
+-    };
++exports.createPickShader = function (gl) {
++  var shader = createShader(gl, vertSrc, pickSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'vec3'},
++    {name: 'normal', type: 'vec3'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  shader.attributes.normal.location = 2
++  return shader
+ }
+-
+-function createGetUniform(attribute, stopOffset) {
+-    return function(layer, globalProperties) {
+-        // stopInterp indicates which stops need to be interpolated.
+-        // If stopInterp is 3.5 then interpolate half way between stops 3 and 4.
+-        var stopInterp = layer.getPaintInterpolationT(attribute.paintProperty, globalProperties.zoom);
+-        // We can only store four stop values in the buffers. stopOffset is the number of stops that come
+-        // before the stops that were added to the buffers.
+-        return [Math.max(0, Math.min(4, stopInterp - stopOffset))];
+-    };
++exports.createContourShader = function (gl) {
++  var shader = createShader(gl, contourVertSrc, fragSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'float'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  return shader
++}
++exports.createPickContourShader = function (gl) {
++  var shader = createShader(gl, contourVertSrc, pickSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'float'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  return shader
+ }
+ 
+-},{"../render/vertex_array_object":273,"../util/struct_array":347,"../util/util":349,"./bucket/circle_bucket":248,"./bucket/fill_bucket":249,"./bucket/line_bucket":250,"./bucket/symbol_bucket":251,"./buffer":252,"feature-filter":352}],248:[function(require,module,exports){
+-'use strict';
++},{"gl-shader":190}],201:[function(require,module,exports){
++'use strict'
+ 
+-var Bucket = require('../bucket');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
+-var EXTENT = Bucket.EXTENT;
++module.exports = createSurfacePlot
+ 
+-module.exports = CircleBucket;
++var bits = require('bit-twiddle')
++var createBuffer = require('gl-buffer')
++var createVAO = require('gl-vao')
++var createTexture = require('gl-texture2d')
++var pool = require('typedarray-pool')
++var colormap = require('colormap')
++var ops = require('ndarray-ops')
++var pack = require('ndarray-pack')
++var ndarray = require('ndarray')
++var surfaceNets = require('surface-nets')
++var multiply = require('gl-mat4/multiply')
++var invert = require('gl-mat4/invert')
++var bsearch = require('binary-search-bounds')
++var gradient = require('ndarray-gradient')
++var shaders = require('./lib/shaders')
+ 
+-/**
+- * Circles are represented by two triangles.
+- *
+- * Each corner has a pos that is the center of the circle and an extrusion
+- * vector that is where it points.
+- * @private
+- */
+-function CircleBucket() {
+-    Bucket.apply(this, arguments);
+-}
++var createShader = shaders.createShader
++var createContourShader = shaders.createContourShader
++var createPickShader = shaders.createPickShader
++var createPickContourShader = shaders.createPickContourShader
+ 
+-CircleBucket.prototype = util.inherit(Bucket, {});
++var SURFACE_VERTEX_SIZE = 4 * (4 + 3 + 3)
+ 
+-CircleBucket.prototype.addCircleVertex = function(vertexArray, x, y, extrudeX, extrudeY) {
+-    return vertexArray.emplaceBack(
+-            (x * 2) + ((extrudeX + 1) / 2),
+-            (y * 2) + ((extrudeY + 1) / 2));
+-};
++var IDENTITY = [
++  1, 0, 0, 0,
++  0, 1, 0, 0,
++  0, 0, 1, 0,
++  0, 0, 0, 1 ]
+ 
+-CircleBucket.prototype.programInterfaces = {
+-    circle: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
++var QUAD = [
++  [0, 0],
++  [0, 1],
++  [1, 0],
++  [1, 1],
++  [1, 0],
++  [0, 1]
++]
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }],
+-        paintAttributes: [{
+-            name: 'a_color',
+-            components: 4,
+-            type: 'Uint8',
+-            getValue: function(layer, globalProperties, featureProperties) {
+-                return util.premultiply(layer.getPaintValue("circle-color", globalProperties, featureProperties));
+-            },
+-            multiplier: 255,
+-            paintProperty: 'circle-color'
+-        }, {
+-            name: 'a_radius',
+-            components: 1,
+-            type: 'Uint16',
+-            isLayerConstant: false,
+-            getValue: function(layer, globalProperties, featureProperties) {
+-                return [layer.getPaintValue("circle-radius", globalProperties, featureProperties)];
+-            },
+-            multiplier: 10,
+-            paintProperty: 'circle-radius'
+-        }]
+-    }
+-};
++var PERMUTATIONS = [
++  [0, 0, 0, 0, 0, 0, 0, 0, 0],
++  [0, 0, 0, 0, 0, 0, 0, 0, 0],
++  [0, 0, 0, 0, 0, 0, 0, 0, 0]
++]
+ 
+-CircleBucket.prototype.addFeature = function(feature) {
+-    var globalProperties = {zoom: this.zoom};
+-    var geometries = loadGeometry(feature);
++;(function () {
++  for (var i = 0; i < 3; ++i) {
++    var p = PERMUTATIONS[i]
++    var u = (i + 1) % 3
++    var v = (i + 2) % 3
++    p[u + 0] = 1
++    p[v + 3] = 1
++    p[i + 6] = 1
++  }
++})()
+ 
+-    var startGroup = this.makeRoomFor('circle', 0);
+-    var startIndex = startGroup.layout.vertex.length;
++function SurfacePickResult (position, index, uv, level, dataCoordinate) {
++  this.position = position
++  this.index = index
++  this.uv = uv
++  this.level = level
++  this.dataCoordinate = dataCoordinate
++}
+ 
+-    for (var j = 0; j < geometries.length; j++) {
+-        for (var k = 0; k < geometries[j].length; k++) {
++var N_COLORS = 265
+ 
+-            var x = geometries[j][k].x;
+-            var y = geometries[j][k].y;
++function genColormap (name) {
++  var x = pack([colormap({
++    colormap: name,
++    nshades: N_COLORS,
++    format: 'rgba'
++  }).map(function (c) {
++    return [c[0], c[1], c[2], 255 * c[3]]
++  })])
++  ops.divseq(x, 255.0)
++  return x
++}
+ 
+-            // Do not include points that are outside the tile boundaries.
+-            if (x < 0 || x >= EXTENT || y < 0 || y >= EXTENT) continue;
++function SurfacePlot (
++  gl,
++  shape,
++  bounds,
++  shader,
++  pickShader,
++  coordinates,
++  vao,
++  colorMap,
++  contourShader,
++  contourPickShader,
++  contourBuffer,
++  contourVAO,
++  dynamicBuffer,
++  dynamicVAO) {
++  this.gl = gl
++  this.shape = shape
++  this.bounds = bounds
++  this.intensityBounds = [];
+ 
+-            // this geometry will be of the Point type, and we'll derive
+-            // two triangles from it.
+-            //
+-            // ┌─────────┐
+-            // │ 3     2 │
+-            // │         │
+-            // │ 0     1 │
+-            // └─────────┘
++  this._shader = shader
++  this._pickShader = pickShader
++  this._coordinateBuffer = coordinates
++  this._vao = vao
++  this._colorMap = colorMap
+ 
+-            var group = this.makeRoomFor('circle', 4);
+-            var vertexArray = group.layout.vertex;
++  this._contourShader = contourShader
++  this._contourPickShader = contourPickShader
++  this._contourBuffer = contourBuffer
++  this._contourVAO = contourVAO
++  this._contourOffsets = [[], [], []]
++  this._contourCounts = [[], [], []]
++  this._vertexCount = 0
+ 
+-            var index = this.addCircleVertex(vertexArray, x, y, -1, -1);
+-            this.addCircleVertex(vertexArray, x, y, 1, -1);
+-            this.addCircleVertex(vertexArray, x, y, 1, 1);
+-            this.addCircleVertex(vertexArray, x, y, -1, 1);
++  this._pickResult = new SurfacePickResult([0, 0, 0], [0, 0], [0, 0], [0, 0, 0], [0, 0, 0])
+ 
+-            group.layout.element.emplaceBack(index, index + 1, index + 2);
+-            group.layout.element.emplaceBack(index, index + 3, index + 2);
+-        }
+-    }
++  this._dynamicBuffer = dynamicBuffer
++  this._dynamicVAO = dynamicVAO
++  this._dynamicOffsets = [0, 0, 0]
++  this._dynamicCounts = [0, 0, 0]
+ 
+-    this.addPaintAttributes('circle', globalProperties, feature.properties, startGroup, startIndex);
+-};
++  this.contourWidth = [ 1, 1, 1 ]
++  this.contourLevels = [[1], [1], [1]]
++  this.contourTint = [0, 0, 0]
++  this.contourColor = [[0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1]]
+ 
+-},{"../../util/util":349,"../bucket":247,"../load_geometry":254}],249:[function(require,module,exports){
+-'use strict';
++  this.showContour = true
++  this.showSurface = true
+ 
+-var Bucket = require('../bucket');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
++  this.enableHighlight = [true, true, true]
++  this.highlightColor = [[0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1]]
++  this.highlightTint = [ 1, 1, 1 ]
++  this.highlightLevel = [-1, -1, -1]
+ 
+-module.exports = FillBucket;
++  // Dynamic contour options
++  this.enableDynamic = [ true, true, true ]
++  this.dynamicLevel = [ NaN, NaN, NaN ]
++  this.dynamicColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ]
++  this.dynamicTint = [ 1, 1, 1 ]
++  this.dynamicWidth = [ 1, 1, 1 ]
+ 
+-function FillBucket() {
+-    Bucket.apply(this, arguments);
+-}
++  this.axesBounds = [[Infinity, Infinity, Infinity], [-Infinity, -Infinity, -Infinity]]
++  this.surfaceProject = [ false, false, false ]
++  this.contourProject = [[ false, false, false ],
++    [ false, false, false ],
++    [ false, false, false ]]
+ 
+-FillBucket.prototype = util.inherit(Bucket, {});
++  this.colorBounds = [ false, false ]
+ 
+-FillBucket.prototype.programInterfaces = {
+-    fill: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
+-        elementBuffer2: true,
+-        elementBuffer2Components: 2,
++  // Store xyz fields, need this for picking
++  this._field = [
++    ndarray(pool.mallocFloat(1024), [0, 0]),
++    ndarray(pool.mallocFloat(1024), [0, 0]),
++    ndarray(pool.mallocFloat(1024), [0, 0]) ]
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }]
+-    }
+-};
++  this.pickId = 1
++  this.clipBounds = [[-Infinity, -Infinity, -Infinity], [Infinity, Infinity, Infinity]]
+ 
+-FillBucket.prototype.addFeature = function(feature) {
+-    var lines = loadGeometry(feature);
+-    for (var i = 0; i < lines.length; i++) {
+-        this.addFill(lines[i]);
+-    }
+-};
++  this.snapToData = false
+ 
+-FillBucket.prototype.addFill = function(vertices) {
+-    if (vertices.length < 3) {
+-        //console.warn('a fill must have at least three vertices');
+-        return;
+-    }
++  this.opacity = 1.0
+ 
+-    // Calculate the total number of vertices we're going to produce so that we
+-    // can resize the buffer beforehand, or detect whether the current line
+-    // won't fit into the buffer anymore.
+-    // In order to be able to use the vertex buffer for drawing the antialiased
+-    // outlines, we separate all polygon vertices with a degenerate (out-of-
+-    // viewplane) vertex.
++  this.lightPosition = [10, 10000, 0]
++  this.ambientLight = 0.8
++  this.diffuseLight = 0.8
++  this.specularLight = 2.0
++  this.roughness = 0.5
++  this.fresnel = 1.5
+ 
+-    var len = vertices.length;
++  this.dirty = true
++}
+ 
+-    // Expand this geometry buffer to hold all the required vertices.
+-    var group = this.makeRoomFor('fill', len + 1);
++var proto = SurfacePlot.prototype
+ 
+-    // We're generating triangle fans, so we always start with the first coordinate in this polygon.
+-    var firstIndex, prevIndex;
+-    for (var i = 0; i < vertices.length; i++) {
+-        var currentVertex = vertices[i];
++proto.isTransparent = function () {
++  return this.opacity < 1
++}
+ 
+-        var currentIndex = group.layout.vertex.emplaceBack(currentVertex.x, currentVertex.y);
+-        if (i === 0) firstIndex = currentIndex;
++proto.isOpaque = function () {
++  if (this.opacity >= 1) {
++    return true
++  }
++  for (var i = 0; i < 3; ++i) {
++    if (this._contourCounts[i].length > 0 || this._dynamicCounts[i] > 0) {
++      return true
++    }
++  }
++  return false
++}
+ 
+-        // Only add triangles that have distinct vertices.
+-        if (i >= 2 && (currentVertex.x !== vertices[0].x || currentVertex.y !== vertices[0].y)) {
+-            group.layout.element.emplaceBack(firstIndex, prevIndex, currentIndex);
+-        }
++proto.pickSlots = 1
+ 
+-        if (i >= 1) {
+-            group.layout.element2.emplaceBack(prevIndex, currentIndex);
+-        }
++proto.setPickBase = function (id) {
++  this.pickId = id
++}
+ 
+-        prevIndex = currentIndex;
+-    }
+-};
++var ZERO_VEC = [0, 0, 0]
+ 
+-},{"../../util/util":349,"../bucket":247,"../load_geometry":254}],250:[function(require,module,exports){
+-'use strict';
++var PROJECT_DATA = {
++  showSurface: false,
++  showContour: false,
++  projections: [IDENTITY.slice(), IDENTITY.slice(), IDENTITY.slice()],
++  clipBounds: [
++    [[0, 0, 0], [0, 0, 0]],
++    [[0, 0, 0], [0, 0, 0]],
++    [[0, 0, 0], [0, 0, 0]]]
++}
+ 
+-var Bucket = require('../bucket');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
+-var EXTENT = Bucket.EXTENT;
++function computeProjectionData (camera, obj) {
++  var i, j, k
+ 
+-// NOTE ON EXTRUDE SCALE:
+-// scale the extrusion vector so that the normal length is this value.
+-// contains the "texture" normals (-1..1). this is distinct from the extrude
+-// normals for line joins, because the x-value remains 0 for the texture
+-// normal array, while the extrude normal actually moves the vertex to create
+-// the acute/bevelled line join.
+-var EXTRUDE_SCALE = 63;
++  // Compute cube properties
++  var cubeAxis = (obj.axes && obj.axes.lastCubeProps.axis) || ZERO_VEC
+ 
+-/*
+- * Sharp corners cause dashed lines to tilt because the distance along the line
+- * is the same at both the inner and outer corners. To improve the appearance of
+- * dashed lines we add extra points near sharp corners so that a smaller part
+- * of the line is tilted.
+- *
+- * COS_HALF_SHARP_CORNER controls how sharp a corner has to be for us to add an
+- * extra vertex. The default is 75 degrees.
+- *
+- * The newly created vertices are placed SHARP_CORNER_OFFSET pixels from the corner.
+- */
+-var COS_HALF_SHARP_CORNER = Math.cos(75 / 2 * (Math.PI / 180));
+-var SHARP_CORNER_OFFSET = 15;
++  var showSurface = obj.showSurface
++  var showContour = obj.showContour
+ 
+-// The number of bits that is used to store the line distance in the buffer.
+-var LINE_DISTANCE_BUFFER_BITS = 14;
++  for (i = 0; i < 3; ++i) {
++    showSurface = showSurface || obj.surfaceProject[i]
++    for (j = 0; j < 3; ++j) {
++      showContour = showContour || obj.contourProject[i][j]
++    }
++  }
+ 
+-// We don't have enough bits for the line distance as we'd like to have, so
+-// use this value to scale the line distance (in tile units) down to a smaller
+-// value. This lets us store longer distances while sacrificing precision.
+-var LINE_DISTANCE_SCALE = 1 / 2;
++  for (i = 0; i < 3; ++i) {
++    // Construct projection onto axis
++    var axisSquish = PROJECT_DATA.projections[i]
++    for (j = 0; j < 16; ++j) {
++      axisSquish[j] = 0
++    }
++    for (j = 0; j < 4; ++j) {
++      axisSquish[5 * j] = 1
++    }
++    axisSquish[5 * i] = 0
++    axisSquish[12 + i] = obj.axesBounds[+(cubeAxis[i] > 0)][i]
++    multiply(axisSquish, camera.model, axisSquish)
+ 
+-// The maximum line distance, in tile units, that fits in the buffer.
+-var MAX_LINE_DISTANCE = Math.pow(2, LINE_DISTANCE_BUFFER_BITS) / LINE_DISTANCE_SCALE;
++    var nclipBounds = PROJECT_DATA.clipBounds[i]
++    for (k = 0; k < 2; ++k) {
++      for (j = 0; j < 3; ++j) {
++        nclipBounds[k][j] = camera.clipBounds[k][j]
++      }
++    }
++    nclipBounds[0][i] = -1e8
++    nclipBounds[1][i] = 1e8
++  }
+ 
++  PROJECT_DATA.showSurface = showSurface
++  PROJECT_DATA.showContour = showContour
+ 
+-module.exports = LineBucket;
++  return PROJECT_DATA
++}
+ 
+-/**
+- * @private
+- */
+-function LineBucket() {
+-    Bucket.apply(this, arguments);
++var UNIFORMS = {
++  model: IDENTITY,
++  view: IDENTITY,
++  projection: IDENTITY,
++  inverseModel: IDENTITY.slice(),
++  lowerBound: [0, 0, 0],
++  upperBound: [0, 0, 0],
++  colorMap: 0,
++  clipBounds: [[0, 0, 0], [0, 0, 0]],
++  height: 0.0,
++  contourTint: 0,
++  contourColor: [0, 0, 0, 1],
++  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
++  zOffset: -1e-4,
++  kambient: 1,
++  kdiffuse: 1,
++  kspecular: 1,
++  lightPosition: [1000, 1000, 1000],
++  eyePosition: [0, 0, 0],
++  roughness: 1,
++  fresnel: 1,
++  opacity: 1
+ }
+ 
+-LineBucket.prototype = util.inherit(Bucket, {});
++var MATRIX_INVERSE = IDENTITY.slice()
++var DEFAULT_PERM = [1, 0, 0, 0, 1, 0, 0, 0, 1]
+ 
+-LineBucket.prototype.addLineVertex = function(vertexBuffer, point, extrude, tx, ty, dir, linesofar) {
+-    return vertexBuffer.emplaceBack(
+-            // a_pos
+-            (point.x << 1) | tx,
+-            (point.y << 1) | ty,
+-            // a_data
+-            // add 128 to store an byte in an unsigned byte
+-            Math.round(EXTRUDE_SCALE * extrude.x) + 128,
+-            Math.round(EXTRUDE_SCALE * extrude.y) + 128,
+-            // Encode the -1/0/1 direction value into the first two bits of .z of a_data.
+-            // Combine it with the lower 6 bits of `linesofar` (shifted by 2 bites to make
+-            // room for the direction value). The upper 8 bits of `linesofar` are placed in
+-            // the `w` component. `linesofar` is scaled down by `LINE_DISTANCE_SCALE` so that
+-            // we can store longer distances while sacrificing precision.
+-            ((dir === 0 ? 0 : (dir < 0 ? -1 : 1)) + 1) | (((linesofar * LINE_DISTANCE_SCALE) & 0x3F) << 2),
+-            (linesofar * LINE_DISTANCE_SCALE) >> 6);
+-};
++function drawCore (params, transparent) {
++  params = params || {}
++  var gl = this.gl
+ 
+-LineBucket.prototype.programInterfaces = {
+-    line: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
++  gl.disable(gl.CULL_FACE)
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }, {
+-            name: 'a_data',
+-            components: 4,
+-            type: 'Uint8'
+-        }]
+-    }
+-};
++  this._colorMap.bind(0)
+ 
+-LineBucket.prototype.addFeature = function(feature) {
+-    var lines = loadGeometry(feature);
+-    for (var i = 0; i < lines.length; i++) {
+-        this.addLine(
+-            lines[i],
+-            this.layer.layout['line-join'],
+-            this.layer.layout['line-cap'],
+-            this.layer.layout['line-miter-limit'],
+-            this.layer.layout['line-round-limit']
+-        );
+-    }
+-};
++  var uniforms = UNIFORMS
++  uniforms.model = params.model || IDENTITY
++  uniforms.view = params.view || IDENTITY
++  uniforms.projection = params.projection || IDENTITY
++  uniforms.lowerBound = [this.bounds[0][0], this.bounds[0][1], this.colorBounds[0] || this.bounds[0][2]]
++  uniforms.upperBound = [this.bounds[1][0], this.bounds[1][1], this.colorBounds[1] || this.bounds[1][2]]
++  uniforms.contourColor = this.contourColor[0]
+ 
+-LineBucket.prototype.addLine = function(vertices, join, cap, miterLimit, roundLimit) {
++  uniforms.inverseModel = invert(uniforms.inverseModel, uniforms.model)
+ 
+-    var len = vertices.length;
+-    // If the line has duplicate vertices at the end, adjust length to remove them.
+-    while (len > 2 && vertices[len - 1].equals(vertices[len - 2])) {
+-        len--;
++  for (var i = 0; i < 2; ++i) {
++    var clipClamped = uniforms.clipBounds[i]
++    for (var j = 0; j < 3; ++j) {
++      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
+     }
++  }
+ 
+-    if (vertices.length < 2) {
+-        //console.warn('a line must have at least two vertices');
+-        return;
+-    }
++  uniforms.kambient = this.ambientLight
++  uniforms.kdiffuse = this.diffuseLight
++  uniforms.kspecular = this.specularLight
+ 
+-    if (join === 'bevel') miterLimit = 1.05;
++  uniforms.roughness = this.roughness
++  uniforms.fresnel = this.fresnel
++  uniforms.opacity = this.opacity
+ 
+-    var sharpCornerOffset = SHARP_CORNER_OFFSET * (EXTENT / (512 * this.overscaling));
++  uniforms.height = 0.0
++  uniforms.permutation = DEFAULT_PERM
+ 
+-    var firstVertex = vertices[0],
+-        lastVertex = vertices[len - 1],
+-        closed = firstVertex.equals(lastVertex);
++  // Compute camera matrix inverse
++  var invCameraMatrix = MATRIX_INVERSE
++  multiply(invCameraMatrix, uniforms.view, uniforms.model)
++  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
++  invert(invCameraMatrix, invCameraMatrix)
+ 
+-    // we could be more precise, but it would only save a negligible amount of space
+-    this.makeRoomFor('line', len * 10);
++  for (i = 0; i < 3; ++i) {
++    uniforms.eyePosition[i] = invCameraMatrix[12 + i] / invCameraMatrix[15]
++  }
+ 
+-    if (len === 2 && closed) {
+-        // console.warn('a line may not have coincident points');
+-        return;
++  var w = invCameraMatrix[15]
++  for (i = 0; i < 3; ++i) {
++    w += this.lightPosition[i] * invCameraMatrix[4 * i + 3]
++  }
++  for (i = 0; i < 3; ++i) {
++    var s = invCameraMatrix[12 + i]
++    for (j = 0; j < 3; ++j) {
++      s += invCameraMatrix[4 * j + i] * this.lightPosition[j]
+     }
++    uniforms.lightPosition[i] = s / w
++  }
+ 
+-    this.distance = 0;
++  var projectData = computeProjectionData(uniforms, this)
+ 
+-    var beginCap = cap,
+-        endCap = closed ? 'butt' : cap,
+-        startOfLine = true,
+-        currentVertex, prevVertex, nextVertex, prevNormal, nextNormal, offsetA, offsetB;
++  if (projectData.showSurface && (transparent === (this.opacity < 1))) {
++    // Set up uniforms
++    this._shader.bind()
++    this._shader.uniforms = uniforms
+ 
+-    // the last three vertices added
+-    this.e1 = this.e2 = this.e3 = -1;
++    // Draw it
++    this._vao.bind()
+ 
+-    if (closed) {
+-        currentVertex = vertices[len - 2];
+-        nextNormal = firstVertex.sub(currentVertex)._unit()._perp();
++    if (this.showSurface && this._vertexCount) {
++      this._vao.draw(gl.TRIANGLES, this._vertexCount)
+     }
+ 
+-    for (var i = 0; i < len; i++) {
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      if (!this.surfaceProject[i] || !this.vertexCount) {
++        continue
++      }
++      this._shader.uniforms.model = projectData.projections[i]
++      this._shader.uniforms.clipBounds = projectData.clipBounds[i]
++      this._vao.draw(gl.TRIANGLES, this._vertexCount)
++    }
+ 
+-        nextVertex = closed && i === len - 1 ?
+-            vertices[1] : // if the line is closed, we treat the last vertex like the first
+-            vertices[i + 1]; // just the next vertex
++    this._vao.unbind()
++  }
+ 
+-        // if two consecutive vertices exist, skip the current one
+-        if (nextVertex && vertices[i].equals(nextVertex)) continue;
++  if (projectData.showContour && !transparent) {
++    var shader = this._contourShader
+ 
+-        if (nextNormal) prevNormal = nextNormal;
+-        if (currentVertex) prevVertex = currentVertex;
++    // Don't apply lighting to contours
++    uniforms.kambient = 1.0
++    uniforms.kdiffuse = 0.0
++    uniforms.kspecular = 0.0
++    uniforms.opacity = 1.0
+ 
+-        currentVertex = vertices[i];
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-        // Calculate the normal towards the next vertex in this line. In case
+-        // there is no next vertex, pretend that the line is continuing straight,
+-        // meaning that we are just using the previous normal.
+-        nextNormal = nextVertex ? nextVertex.sub(currentVertex)._unit()._perp() : prevNormal;
++    // Draw contour lines
++    var vao = this._contourVAO
++    vao.bind()
+ 
+-        // If we still don't have a previous normal, this is the beginning of a
+-        // non-closed line, so we're doing a straight "join".
+-        prevNormal = prevNormal || nextNormal;
++    // Draw contour levels
++    for (i = 0; i < 3; ++i) {
++      shader.uniforms.permutation = PERMUTATIONS[i]
++      gl.lineWidth(this.contourWidth[i])
+ 
+-        // Determine the normal of the join extrusion. It is the angle bisector
+-        // of the segments between the previous line and the next line.
+-        var joinNormal = prevNormal.add(nextNormal)._unit();
++      for (j = 0; j < this.contourLevels[i].length; ++j) {
++        if (!this._contourCounts[i][j]) {
++          continue
++        }
++        if (j === this.highlightLevel[i]) {
++          shader.uniforms.contourColor = this.highlightColor[i]
++          shader.uniforms.contourTint = this.highlightTint[i]
++        } else if (j === 0 || (j - 1) === this.highlightLevel[i]) {
++          shader.uniforms.contourColor = this.contourColor[i]
++          shader.uniforms.contourTint = this.contourTint[i]
++        }
++        shader.uniforms.height = this.contourLevels[i][j]
++        vao.draw(gl.LINES, this._contourCounts[i][j], this._contourOffsets[i][j])
++      }
++    }
+ 
+-        /*  joinNormal     prevNormal
+-         *             ↖      ↑
+-         *                .________. prevVertex
+-         *                |
+-         * nextNormal  ←  |  currentVertex
+-         *                |
+-         *     nextVertex !
+-         *
+-         */
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      shader.uniforms.model = projectData.projections[i]
++      shader.uniforms.clipBounds = projectData.clipBounds[i]
++      for (j = 0; j < 3; ++j) {
++        if (!this.contourProject[i][j]) {
++          continue
++        }
++        shader.uniforms.permutation = PERMUTATIONS[j]
++        gl.lineWidth(this.contourWidth[j])
++        for (var k = 0; k < this.contourLevels[j].length; ++k) {
++          if (k === this.highlightLevel[j]) {
++            shader.uniforms.contourColor = this.highlightColor[j]
++            shader.uniforms.contourTint = this.highlightTint[j]
++          } else if (k === 0 || (k - 1) === this.highlightLevel[j]) {
++            shader.uniforms.contourColor = this.contourColor[j]
++            shader.uniforms.contourTint = this.contourTint[j]
++          }
++          shader.uniforms.height = this.contourLevels[j][k]
++          vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
++        }
++      }
++    }
+ 
+-        // Calculate the length of the miter (the ratio of the miter to the width).
+-        // Find the cosine of the angle between the next and join normals
+-        // using dot product. The inverse of that is the miter length.
+-        var cosHalfAngle = joinNormal.x * nextNormal.x + joinNormal.y * nextNormal.y;
+-        var miterLength = 1 / cosHalfAngle;
++    // Draw dynamic contours
++    vao = this._dynamicVAO
++    vao.bind()
+ 
+-        var isSharpCorner = cosHalfAngle < COS_HALF_SHARP_CORNER && prevVertex && nextVertex;
++    // Draw contour levels
++    for (i = 0; i < 3; ++i) {
++      if (this._dynamicCounts[i] === 0) {
++        continue
++      }
+ 
+-        if (isSharpCorner && i > 0) {
+-            var prevSegmentLength = currentVertex.dist(prevVertex);
+-            if (prevSegmentLength > 2 * sharpCornerOffset) {
+-                var newPrevVertex = currentVertex.sub(currentVertex.sub(prevVertex)._mult(sharpCornerOffset / prevSegmentLength)._round());
+-                this.distance += newPrevVertex.dist(prevVertex);
+-                this.addCurrentVertex(newPrevVertex, this.distance, prevNormal.mult(1), 0, 0, false);
+-                prevVertex = newPrevVertex;
+-            }
+-        }
++      shader.uniforms.model = uniforms.model
++      shader.uniforms.clipBounds = uniforms.clipBounds
++      shader.uniforms.permutation = PERMUTATIONS[i]
++      gl.lineWidth(this.dynamicWidth[i])
+ 
+-        // The join if a middle vertex, otherwise the cap.
+-        var middleVertex = prevVertex && nextVertex;
+-        var currentJoin = middleVertex ? join : nextVertex ? beginCap : endCap;
++      shader.uniforms.contourColor = this.dynamicColor[i]
++      shader.uniforms.contourTint = this.dynamicTint[i]
++      shader.uniforms.height = this.dynamicLevel[i]
++      vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
+ 
+-        if (middleVertex && currentJoin === 'round') {
+-            if (miterLength < roundLimit) {
+-                currentJoin = 'miter';
+-            } else if (miterLength <= 2) {
+-                currentJoin = 'fakeround';
+-            }
++      for (j = 0; j < 3; ++j) {
++        if (!this.contourProject[j][i]) {
++          continue
+         }
+ 
+-        if (currentJoin === 'miter' && miterLength > miterLimit) {
+-            currentJoin = 'bevel';
+-        }
++        shader.uniforms.model = projectData.projections[j]
++        shader.uniforms.clipBounds = projectData.clipBounds[j]
++        vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
++      }
++    }
+ 
+-        if (currentJoin === 'bevel') {
+-            // The maximum extrude length is 128 / 63 = 2 times the width of the line
+-            // so if miterLength >= 2 we need to draw a different type of bevel where.
+-            if (miterLength > 2) currentJoin = 'flipbevel';
++    vao.unbind()
++  }
++}
+ 
+-            // If the miterLength is really small and the line bevel wouldn't be visible,
+-            // just draw a miter join to save a triangle.
+-            if (miterLength < miterLimit) currentJoin = 'miter';
+-        }
++proto.draw = function (params) {
++  return drawCore.call(this, params, false)
++}
+ 
+-        // Calculate how far along the line the currentVertex is
+-        if (prevVertex) this.distance += currentVertex.dist(prevVertex);
++proto.drawTransparent = function (params) {
++  return drawCore.call(this, params, true)
++}
+ 
+-        if (currentJoin === 'miter') {
++var PICK_UNIFORMS = {
++  model: IDENTITY,
++  view: IDENTITY,
++  projection: IDENTITY,
++  inverseModel: IDENTITY,
++  clipBounds: [[0, 0, 0], [0, 0, 0]],
++  height: 0.0,
++  shape: [0, 0],
++  pickId: 0,
++  lowerBound: [0, 0, 0],
++  upperBound: [0, 0, 0],
++  zOffset: 0.0,
++  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
++  lightPosition: [0, 0, 0],
++  eyePosition: [0, 0, 0]
++}
+ 
+-            joinNormal._mult(miterLength);
+-            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
++proto.drawPick = function (params) {
++  params = params || {}
++  var gl = this.gl
++  gl.disable(gl.CULL_FACE)
+ 
+-        } else if (currentJoin === 'flipbevel') {
+-            // miter is too big, flip the direction to make a beveled join
++  var uniforms = PICK_UNIFORMS
++  uniforms.model = params.model || IDENTITY
++  uniforms.view = params.view || IDENTITY
++  uniforms.projection = params.projection || IDENTITY
++  uniforms.shape = this._field[2].shape
++  uniforms.pickId = this.pickId / 255.0
++  uniforms.lowerBound = this.bounds[0]
++  uniforms.upperBound = this.bounds[1]
++  uniforms.permutation = DEFAULT_PERM
+ 
+-            if (miterLength > 100) {
+-                // Almost parallel lines
+-                joinNormal = nextNormal.clone();
++  for (var i = 0; i < 2; ++i) {
++    var clipClamped = uniforms.clipBounds[i]
++    for (var j = 0; j < 3; ++j) {
++      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
++    }
++  }
+ 
+-            } else {
+-                var direction = prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x > 0 ? -1 : 1;
+-                var bevelLength = miterLength * prevNormal.add(nextNormal).mag() / prevNormal.sub(nextNormal).mag();
+-                joinNormal._perp()._mult(bevelLength * direction);
+-            }
+-            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
+-            this.addCurrentVertex(currentVertex, this.distance, joinNormal.mult(-1), 0, 0, false);
++  var projectData = computeProjectionData(uniforms, this)
+ 
+-        } else if (currentJoin === 'bevel' || currentJoin === 'fakeround') {
+-            var lineTurnsLeft = (prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x) > 0;
+-            var offset = -Math.sqrt(miterLength * miterLength - 1);
+-            if (lineTurnsLeft) {
+-                offsetB = 0;
+-                offsetA = offset;
+-            } else {
+-                offsetA = 0;
+-                offsetB = offset;
+-            }
++  if (projectData.showSurface) {
++    // Set up uniforms
++    this._pickShader.bind()
++    this._pickShader.uniforms = uniforms
+ 
+-            // Close previous segment with a bevel
+-            if (!startOfLine) {
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, offsetA, offsetB, false);
+-            }
++    // Draw it
++    this._vao.bind()
++    this._vao.draw(gl.TRIANGLES, this._vertexCount)
+ 
+-            if (currentJoin === 'fakeround') {
+-                // The join angle is sharp enough that a round join would be visible.
+-                // Bevel joins fill the gap between segments with a single pie slice triangle.
+-                // Create a round join by adding multiple pie slices. The join isn't actually round, but
+-                // it looks like it is at the sizes we render lines at.
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      if (!this.surfaceProject[i]) {
++        continue
++      }
++      this._pickShader.uniforms.model = projectData.projections[i]
++      this._pickShader.uniforms.clipBounds = projectData.clipBounds[i]
++      this._vao.draw(gl.TRIANGLES, this._vertexCount)
++    }
+ 
+-                // Add more triangles for sharper angles.
+-                // This math is just a good enough approximation. It isn't "correct".
+-                var n = Math.floor((0.5 - (cosHalfAngle - 0.5)) * 8);
+-                var approxFractionalJoinNormal;
++    this._vao.unbind()
++  }
+ 
+-                for (var m = 0; m < n; m++) {
+-                    approxFractionalJoinNormal = nextNormal.mult((m + 1) / (n + 1))._add(prevNormal)._unit();
+-                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
+-                }
++  if (projectData.showContour) {
++    var shader = this._contourPickShader
+ 
+-                this.addPieSliceVertex(currentVertex, this.distance, joinNormal, lineTurnsLeft);
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-                for (var k = n - 1; k >= 0; k--) {
+-                    approxFractionalJoinNormal = prevNormal.mult((k + 1) / (n + 1))._add(nextNormal)._unit();
+-                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
+-                }
+-            }
++    var vao = this._contourVAO
++    vao.bind()
+ 
+-            // Start next segment
+-            if (nextVertex) {
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -offsetA, -offsetB, false);
+-            }
++    for (j = 0; j < 3; ++j) {
++      gl.lineWidth(this.contourWidth[j])
++      shader.uniforms.permutation = PERMUTATIONS[j]
++      for (i = 0; i < this.contourLevels[j].length; ++i) {
++        if (this._contourCounts[j][i]) {
++          shader.uniforms.height = this.contourLevels[j][i]
++          vao.draw(gl.LINES, this._contourCounts[j][i], this._contourOffsets[j][i])
++        }
++      }
++    }
+ 
+-        } else if (currentJoin === 'butt') {
+-            if (!startOfLine) {
+-                // Close previous segment with a butt
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
+-            }
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      shader.uniforms.model = projectData.projections[i]
++      shader.uniforms.clipBounds = projectData.clipBounds[i]
+ 
+-            // Start next segment with a butt
+-            if (nextVertex) {
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
+-            }
++      for (j = 0; j < 3; ++j) {
++        if (!this.contourProject[i][j]) {
++          continue
++        }
+ 
+-        } else if (currentJoin === 'square') {
++        shader.uniforms.permutation = PERMUTATIONS[j]
++        gl.lineWidth(this.contourWidth[j])
++        for (var k = 0; k < this.contourLevels[j].length; ++k) {
++          if (this._contourCounts[j][k]) {
++            shader.uniforms.height = this.contourLevels[j][k]
++            vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
++          }
++        }
++      }
++    }
+ 
+-            if (!startOfLine) {
+-                // Close previous segment with a square cap
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, false);
++    vao.unbind()
++  }
++}
+ 
+-                // The segment is done. Unset vertices to disconnect segments.
+-                this.e1 = this.e2 = -1;
+-            }
++proto.pick = function (selection) {
++  if (!selection) {
++    return null
++  }
+ 
+-            // Start next segment
+-            if (nextVertex) {
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, false);
+-            }
++  if (selection.id !== this.pickId) {
++    return null
++  }
+ 
+-        } else if (currentJoin === 'round') {
++  var shape = this._field[2].shape
+ 
+-            if (!startOfLine) {
+-                // Close previous segment with butt
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
++  var result = this._pickResult
+ 
+-                // Add round cap or linejoin at end of segment
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, true);
++  // Compute uv coordinate
++  var x = shape[0] * (selection.value[0] + (selection.value[2] >> 4) / 16.0) / 255.0
++  var ix = Math.floor(x)
++  var fx = x - ix
+ 
+-                // The segment is done. Unset vertices to disconnect segments.
+-                this.e1 = this.e2 = -1;
+-            }
++  var y = shape[1] * (selection.value[1] + (selection.value[2] & 15) / 16.0) / 255.0
++  var iy = Math.floor(y)
++  var fy = y - iy
+ 
++  ix += 1
++  iy += 1
+ 
+-            // Start next segment with a butt
+-            if (nextVertex) {
+-                // Add round cap before first segment
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, true);
++  // Compute xyz coordinate
++  var pos = result.position
++  pos[0] = pos[1] = pos[2] = 0
++  for (var dx = 0; dx < 2; ++dx) {
++    var s = dx ? fx : 1.0 - fx
++    for (var dy = 0; dy < 2; ++dy) {
++      var t = dy ? fy : 1.0 - fy
+ 
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
+-            }
+-        }
++      var r = ix + dx
++      var c = iy + dy
++      var w = s * t
+ 
+-        if (isSharpCorner && i < len - 1) {
+-            var nextSegmentLength = currentVertex.dist(nextVertex);
+-            if (nextSegmentLength > 2 * sharpCornerOffset) {
+-                var newCurrentVertex = currentVertex.add(nextVertex.sub(currentVertex)._mult(sharpCornerOffset / nextSegmentLength)._round());
+-                this.distance += newCurrentVertex.dist(currentVertex);
+-                this.addCurrentVertex(newCurrentVertex, this.distance, nextNormal.mult(1), 0, 0, false);
+-                currentVertex = newCurrentVertex;
+-            }
+-        }
++      for (var i = 0; i < 3; ++i) {
++        pos[i] += this._field[i].get(r, c) * w
++      }
++    }
++  }
+ 
+-        startOfLine = false;
++  // Find closest level
++  var levelIndex = this._pickResult.level
++  for (var j = 0; j < 3; ++j) {
++    levelIndex[j] = bsearch.le(this.contourLevels[j], pos[j])
++    if (levelIndex[j] < 0) {
++      if (this.contourLevels[j].length > 0) {
++        levelIndex[j] = 0
++      }
++    } else if (levelIndex[j] < this.contourLevels[j].length - 1) {
++      var a = this.contourLevels[j][levelIndex[j]]
++      var b = this.contourLevels[j][levelIndex[j] + 1]
++      if (Math.abs(a - pos[j]) > Math.abs(b - pos[j])) {
++        levelIndex[j] += 1
++      }
+     }
++  }
+ 
+-};
++  result.index[0] = fx < 0.5 ? ix : (ix + 1)
++  result.index[1] = fy < 0.5 ? iy : (iy + 1)
+ 
+-/**
+- * Add two vertices to the buffers.
+- *
+- * @param {Object} currentVertex the line vertex to add buffer vertices for
+- * @param {number} distance the distance from the beginning of the line to the vertex
+- * @param {number} endLeft extrude to shift the left vertex along the line
+- * @param {number} endRight extrude to shift the left vertex along the line
+- * @param {boolean} round whether this is a round cap
+- * @private
+- */
+-LineBucket.prototype.addCurrentVertex = function(currentVertex, distance, normal, endLeft, endRight, round) {
+-    var tx = round ? 1 : 0;
+-    var extrude;
+-    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
+-    var vertexArray = layoutArrays.vertex;
+-    var elementArray = layoutArrays.element;
++  result.uv[0] = x / shape[0]
++  result.uv[1] = y / shape[1]
+ 
+-    extrude = normal.clone();
+-    if (endLeft) extrude._sub(normal.perp()._mult(endLeft));
+-    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 0, endLeft, distance);
+-    if (this.e1 >= 0 && this.e2 >= 0) {
+-        elementArray.emplaceBack(this.e1, this.e2, this.e3);
+-    }
+-    this.e1 = this.e2;
+-    this.e2 = this.e3;
++  for (i = 0; i < 3; ++i) {
++    result.dataCoordinate[i] = this._field[i].get(result.index[0], result.index[1])
++  }
+ 
+-    extrude = normal.mult(-1);
+-    if (endRight) extrude._sub(normal.perp()._mult(endRight));
+-    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 1, -endRight, distance);
+-    if (this.e1 >= 0 && this.e2 >= 0) {
+-        elementArray.emplaceBack(this.e1, this.e2, this.e3);
+-    }
+-    this.e1 = this.e2;
+-    this.e2 = this.e3;
++  return result
++}
+ 
+-    // There is a maximum "distance along the line" that we can store in the buffers.
+-    // When we get close to the distance, reset it to zero and add the vertex again with
+-    // a distance of zero. The max distance is determined by the number of bits we allocate
+-    // to `linesofar`.
+-    if (distance > MAX_LINE_DISTANCE / 2) {
+-        this.distance = 0;
+-        this.addCurrentVertex(currentVertex, this.distance, normal, endLeft, endRight, round);
+-    }
+-};
++function padField (nfield, field) {
++  var shape = field.shape.slice()
++  var nshape = nfield.shape.slice()
+ 
+-/**
+- * Add a single new vertex and a triangle using two previous vertices.
+- * This adds a pie slice triangle near a join to simulate round joins
+- *
+- * @param {Object} currentVertex the line vertex to add buffer vertices for
+- * @param {number} distance the distance from the beggining of the line to the vertex
+- * @param {Object} extrude the offset of the new vertex from the currentVertex
+- * @param {boolean} whether the line is turning left or right at this angle
+- * @private
+- */
+-LineBucket.prototype.addPieSliceVertex = function(currentVertex, distance, extrude, lineTurnsLeft) {
+-    var ty = lineTurnsLeft ? 1 : 0;
+-    extrude = extrude.mult(lineTurnsLeft ? -1 : 1);
+-    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
+-    var vertexArray = layoutArrays.vertex;
+-    var elementArray = layoutArrays.element;
++  // Center
++  ops.assign(nfield.lo(1, 1).hi(shape[0], shape[1]), field)
+ 
+-    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, 0, ty, 0, distance);
++  // Edges
++  ops.assign(nfield.lo(1).hi(shape[0], 1),
++    field.hi(shape[0], 1))
++  ops.assign(nfield.lo(1, nshape[1] - 1).hi(shape[0], 1),
++    field.lo(0, shape[1] - 1).hi(shape[0], 1))
++  ops.assign(nfield.lo(0, 1).hi(1, shape[1]),
++    field.hi(1))
++  ops.assign(nfield.lo(nshape[0] - 1, 1).hi(1, shape[1]),
++    field.lo(shape[0] - 1))
++  // Corners
++  nfield.set(0, 0, field.get(0, 0))
++  nfield.set(0, nshape[1] - 1, field.get(0, shape[1] - 1))
++  nfield.set(nshape[0] - 1, 0, field.get(shape[0] - 1, 0))
++  nfield.set(nshape[0] - 1, nshape[1] - 1, field.get(shape[0] - 1, shape[1] - 1))
++}
+ 
+-    if (this.e1 >= 0 && this.e2 >= 0) {
+-        elementArray.emplaceBack(this.e1, this.e2, this.e3);
++function handleArray (param, ctor) {
++  if (Array.isArray(param)) {
++    return [ ctor(param[0]), ctor(param[1]), ctor(param[2]) ]
++  }
++  return [ ctor(param), ctor(param), ctor(param) ]
++}
++
++function toColor (x) {
++  if (Array.isArray(x)) {
++    if (x.length === 3) {
++      return [x[0], x[1], x[2], 1]
+     }
++    return [x[0], x[1], x[2], x[3]]
++  }
++  return [0, 0, 0, 1]
++}
+ 
+-    if (lineTurnsLeft) {
+-        this.e2 = this.e3;
++function handleColor (param) {
++  if (Array.isArray(param)) {
++    if (Array.isArray(param)) {
++      return [
++        toColor(param[0]),
++        toColor(param[1]),
++        toColor(param[2]) ]
+     } else {
+-        this.e1 = this.e3;
++      var c = toColor(param)
++      return [
++        c.slice(),
++        c.slice(),
++        c.slice() ]
+     }
+-};
+-
+-},{"../../util/util":349,"../bucket":247,"../load_geometry":254}],251:[function(require,module,exports){
+-'use strict';
+-
+-var Point = require('point-geometry');
+-
+-var Bucket = require('../bucket');
+-var Anchor = require('../../symbol/anchor');
+-var getAnchors = require('../../symbol/get_anchors');
+-var resolveTokens = require('../../util/token');
+-var Quads = require('../../symbol/quads');
+-var Shaping = require('../../symbol/shaping');
+-var resolveText = require('../../symbol/resolve_text');
+-var mergeLines = require('../../symbol/mergelines');
+-var clipLine = require('../../symbol/clip_line');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
+-var CollisionFeature = require('../../symbol/collision_feature');
+-
+-var shapeText = Shaping.shapeText;
+-var shapeIcon = Shaping.shapeIcon;
+-var getGlyphQuads = Quads.getGlyphQuads;
+-var getIconQuads = Quads.getIconQuads;
++  }
++}
+ 
+-var EXTENT = Bucket.EXTENT;
++proto.update = function (params) {
++  params = params || {}
+ 
+-module.exports = SymbolBucket;
++  this.dirty = true
+ 
+-function SymbolBucket(options) {
+-    Bucket.apply(this, arguments);
+-    this.showCollisionBoxes = options.showCollisionBoxes;
+-    this.overscaling = options.overscaling;
+-    this.collisionBoxArray = options.collisionBoxArray;
++  if ('contourWidth' in params) {
++    this.contourWidth = handleArray(params.contourWidth, Number)
++  }
++  if ('showContour' in params) {
++    this.showContour = handleArray(params.showContour, Boolean)
++  }
++  if ('showSurface' in params) {
++    this.showSurface = !!params.showSurface
++  }
++  if ('contourTint' in params) {
++    this.contourTint = handleArray(params.contourTint, Boolean)
++  }
++  if ('contourColor' in params) {
++    this.contourColor = handleColor(params.contourColor)
++  }
++  if ('contourProject' in params) {
++    this.contourProject = handleArray(params.contourProject, function (x) {
++      return handleArray(x, Boolean)
++    })
++  }
++  if ('surfaceProject' in params) {
++    this.surfaceProject = params.surfaceProject
++  }
++  if ('dynamicColor' in params) {
++    this.dynamicColor = handleColor(params.dynamicColor)
++  }
++  if ('dynamicTint' in params) {
++    this.dynamicTint = handleArray(params.dynamicTint, Number)
++  }
++  if ('dynamicWidth' in params) {
++    this.dynamicWidth = handleArray(params.dynamicWidth, Number)
++  }
++  if ('opacity' in params) {
++    this.opacity = params.opacity
++  }
++  if ('colorBounds' in params) {
++    this.colorBounds = params.colorBounds
++  }
+ 
+-    this.sdfIcons = options.sdfIcons;
+-    this.iconsNeedLinear = options.iconsNeedLinear;
+-    this.adjustedTextSize = options.adjustedTextSize;
+-    this.adjustedIconSize = options.adjustedIconSize;
+-    this.fontstack = options.fontstack;
+-}
++  var field = params.field || (params.coords && params.coords[2]) || null
++  var levelsChanged = false
+ 
+-SymbolBucket.prototype = util.inherit(Bucket, {});
++  if (!field) {
++    if (this._field[2].shape[0] || this._field[2].shape[2]) {
++      field = this._field[2].lo(1, 1).hi(this._field[2].shape[0] - 2, this._field[2].shape[1] - 2)
++    } else {
++      field = this._field[2].hi(0, 0)
++    }
++  }
+ 
+-SymbolBucket.prototype.serialize = function() {
+-    var serialized = Bucket.prototype.serialize.apply(this);
+-    serialized.sdfIcons = this.sdfIcons;
+-    serialized.iconsNeedLinear = this.iconsNeedLinear;
+-    serialized.adjustedTextSize = this.adjustedTextSize;
+-    serialized.adjustedIconSize = this.adjustedIconSize;
+-    serialized.fontstack = this.fontstack;
+-    return serialized;
+-};
++  // Update field
++  if ('field' in params || 'coords' in params) {
++    var fsize = (field.shape[0] + 2) * (field.shape[1] + 2)
+ 
+-var programAttributes = [{
+-    name: 'a_pos',
+-    components: 2,
+-    type: 'Int16'
+-}, {
+-    name: 'a_offset',
+-    components: 2,
+-    type: 'Int16'
+-}, {
+-    name: 'a_data1',
+-    components: 4,
+-    type: 'Uint8'
+-}, {
+-    name: 'a_data2',
+-    components: 2,
+-    type: 'Uint8'
+-}];
++    // Resize if necessary
++    if (fsize > this._field[2].data.length) {
++      pool.freeFloat(this._field[2].data)
++      this._field[2].data = pool.mallocFloat(bits.nextPow2(fsize))
++    }
+ 
+-function addVertex(array, x, y, ox, oy, tx, ty, minzoom, maxzoom, labelminzoom) {
+-    return array.emplaceBack(
+-            // pos
+-            x,
+-            y,
+-            // offset
+-            Math.round(ox * 64), // use 1/64 pixels for placement
+-            Math.round(oy * 64),
+-            // data1
+-            tx / 4,                   // tex
+-            ty / 4,                   // tex
+-            (labelminzoom || 0) * 10, // labelminzoom
+-            0,
+-            // data2
+-            (minzoom || 0) * 10,               // minzoom
+-            Math.min(maxzoom || 25, 25) * 10); // minzoom
+-}
++    // Pad field
++    this._field[2] = ndarray(this._field[2].data, [field.shape[0] + 2, field.shape[1] + 2])
++    padField(this._field[2], field)
+ 
+-SymbolBucket.prototype.addCollisionBoxVertex = function(vertexArray, point, extrude, maxZoom, placementZoom) {
+-    return vertexArray.emplaceBack(
+-            // pos
+-            point.x,
+-            point.y,
+-            // extrude
+-            Math.round(extrude.x),
+-            Math.round(extrude.y),
+-            // data
+-            maxZoom * 10,
+-            placementZoom * 10);
+-};
++    // Save shape of field
++    this.shape = field.shape.slice()
++    var shape = this.shape
+ 
+-SymbolBucket.prototype.programInterfaces = {
++    // Resize coordinate fields if necessary
++    for (var i = 0; i < 2; ++i) {
++      if (this._field[2].size > this._field[i].data.length) {
++        pool.freeFloat(this._field[i].data)
++        this._field[i].data = pool.mallocFloat(this._field[2].size)
++      }
++      this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2])
++    }
+ 
+-    glyph: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
+-        layoutAttributes: programAttributes
+-    },
++    // Generate x/y coordinates
++    if (params.coords) {
++      var coords = params.coords
++      if (!Array.isArray(coords) || coords.length !== 3) {
++        throw new Error('gl-surface: invalid coordinates for x/y')
++      }
++      for (i = 0; i < 2; ++i) {
++        var coord = coords[i]
++        for (j = 0; j < 2; ++j) {
++          if (coord.shape[j] !== shape[j]) {
++            throw new Error('gl-surface: coords have incorrect shape')
++          }
++        }
++        padField(this._field[i], coord)
++      }
++    } else if (params.ticks) {
++      var ticks = params.ticks
++      if (!Array.isArray(ticks) || ticks.length !== 2) {
++        throw new Error('gl-surface: invalid ticks')
++      }
++      for (i = 0; i < 2; ++i) {
++        var tick = ticks[i]
++        if (Array.isArray(tick) || tick.length) {
++          tick = ndarray(tick)
++        }
++        if (tick.shape[0] !== shape[i]) {
++          throw new Error('gl-surface: invalid tick length')
++        }
++        // Make a copy view of the tick array
++        var tick2 = ndarray(tick.data, shape)
++        tick2.stride[i] = tick.stride[0]
++        tick2.stride[i ^ 1] = 0
+ 
+-    icon: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
+-        layoutAttributes: programAttributes
+-    },
++        // Fill in field array
++        padField(this._field[i], tick2)
++      }
++    } else {
++      for (i = 0; i < 2; ++i) {
++        var offset = [0, 0]
++        offset[i] = 1
++        this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2], offset, 0)
++      }
++      this._field[0].set(0, 0, 0)
++      for (var j = 0; j < shape[0]; ++j) {
++        this._field[0].set(j + 1, 0, j)
++      }
++      this._field[0].set(shape[0] + 1, 0, shape[0] - 1)
++      this._field[1].set(0, 0, 0)
++      for (j = 0; j < shape[1]; ++j) {
++        this._field[1].set(0, j + 1, j)
++      }
++      this._field[1].set(0, shape[1] + 1, shape[1] - 1)
++    }
+ 
+-    collisionBox: {
+-        vertexBuffer: true,
++    // Save shape
++    var fields = this._field
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }, {
+-            name: 'a_extrude',
+-            components: 2,
+-            type: 'Int16'
+-        }, {
+-            name: 'a_data',
+-            components: 2,
+-            type: 'Uint8'
+-        }]
++    // Compute surface normals
++    var dfields = ndarray(pool.mallocFloat(fields[2].size * 3 * 2), [3, shape[0] + 2, shape[1] + 2, 2])
++    for (i = 0; i < 3; ++i) {
++      gradient(dfields.pick(i), fields[i], 'mirror')
+     }
+-};
++    var normals = ndarray(pool.mallocFloat(fields[2].size * 3), [shape[0] + 2, shape[1] + 2, 3])
++    for (i = 0; i < shape[0] + 2; ++i) {
++      for (j = 0; j < shape[1] + 2; ++j) {
++        var dxdu = dfields.get(0, i, j, 0)
++        var dxdv = dfields.get(0, i, j, 1)
++        var dydu = dfields.get(1, i, j, 0)
++        var dydv = dfields.get(1, i, j, 1)
++        var dzdu = dfields.get(2, i, j, 0)
++        var dzdv = dfields.get(2, i, j, 1)
+ 
+-SymbolBucket.prototype.populateBuffers = function(collisionTile, stacks, icons) {
++        var nx = dydu * dzdv - dydv * dzdu
++        var ny = dzdu * dxdv - dzdv * dxdu
++        var nz = dxdu * dydv - dxdv * dydu
+ 
+-    // To reduce the number of labels that jump around when zooming we need
+-    // to use a text-size value that is the same for all zoom levels.
+-    // This calculates text-size at a high zoom level so that all tiles can
+-    // use the same value when calculating anchor positions.
+-    var zoomHistory = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
+-    this.adjustedTextMaxSize = this.layer.getLayoutValue('text-size', {zoom: 18, zoomHistory: zoomHistory});
+-    this.adjustedTextSize = this.layer.getLayoutValue('text-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
+-    this.adjustedIconMaxSize = this.layer.getLayoutValue('icon-size', {zoom: 18, zoomHistory: zoomHistory});
+-    this.adjustedIconSize = this.layer.getLayoutValue('icon-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
++        var nl = Math.sqrt(nx * nx + ny * ny + nz * nz)
++        if (nl < 1e-8) {
++          nl = Math.max(Math.abs(nx), Math.abs(ny), Math.abs(nz))
++          if (nl < 1e-8) {
++            nz = 1.0
++            ny = nx = 0.0
++            nl = 1.0
++          } else {
++            nl = 1.0 / nl
++          }
++        } else {
++          nl = 1.0 / Math.sqrt(nl)
++        }
+ 
+-    var tileSize = 512 * this.overscaling;
+-    this.tilePixelRatio = EXTENT / tileSize;
+-    this.compareText = {};
+-    this.symbolInstances = [];
+-    this.iconsNeedLinear = false;
++        normals.set(i, j, 0, nx * nl)
++        normals.set(i, j, 1, ny * nl)
++        normals.set(i, j, 2, nz * nl)
++      }
++    }
++    pool.free(dfields.data)
+ 
+-    var layout = this.layer.layout;
+-    var features = this.features;
+-    var textFeatures = this.textFeatures;
++    // Initialize surface
++    var lo = [ Infinity, Infinity, Infinity ]
++    var hi = [ -Infinity, -Infinity, -Infinity ]
++    var lo_intensity = Infinity
++    var hi_intensity = -Infinity
++    var count = (shape[0] - 1) * (shape[1] - 1) * 6
++    var tverts = pool.mallocFloat(bits.nextPow2(10 * count))
++    var tptr = 0
++    var vertexCount = 0
++    for (i = 0; i < shape[0] - 1; ++i) {
++      j_loop:
++      for (j = 0; j < shape[1] - 1; ++j) {
++        // Test for NaNs
++        for (var dx = 0; dx < 2; ++dx) {
++          for (var dy = 0; dy < 2; ++dy) {
++            for (var k = 0; k < 3; ++k) {
++              var f = this._field[k].get(1 + i + dx, 1 + j + dy)
++              if (isNaN(f) || !isFinite(f)) {
++                continue j_loop
++              }
++            }
++          }
++        }
++        for (k = 0; k < 6; ++k) {
++          var r = i + QUAD[k][0]
++          var c = j + QUAD[k][1]
+ 
+-    var horizontalAlign = 0.5,
+-        verticalAlign = 0.5;
++          var tx = this._field[0].get(r + 1, c + 1)
++          var ty = this._field[1].get(r + 1, c + 1)
++          f = this._field[2].get(r + 1, c + 1)
++          var vf = f
++          nx = normals.get(r + 1, c + 1, 0)
++          ny = normals.get(r + 1, c + 1, 1)
++          nz = normals.get(r + 1, c + 1, 2)
+ 
+-    switch (layout['text-anchor']) {
+-    case 'right':
+-    case 'top-right':
+-    case 'bottom-right':
+-        horizontalAlign = 1;
+-        break;
+-    case 'left':
+-    case 'top-left':
+-    case 'bottom-left':
+-        horizontalAlign = 0;
+-        break;
+-    }
++          if (params.intensity) {
++            vf = params.intensity.get(r, c)
++          }
+ 
+-    switch (layout['text-anchor']) {
+-    case 'bottom':
+-    case 'bottom-right':
+-    case 'bottom-left':
+-        verticalAlign = 1;
+-        break;
+-    case 'top':
+-    case 'top-right':
+-    case 'top-left':
+-        verticalAlign = 0;
+-        break;
+-    }
++          tverts[tptr++] = r
++          tverts[tptr++] = c
++          tverts[tptr++] = tx
++          tverts[tptr++] = ty
++          tverts[tptr++] = f
++          tverts[tptr++] = 0
++          tverts[tptr++] = vf
++          tverts[tptr++] = nx
++          tverts[tptr++] = ny
++          tverts[tptr++] = nz
+ 
+-    var justify = layout['text-justify'] === 'right' ? 1 :
+-        layout['text-justify'] === 'left' ? 0 :
+-        0.5;
++          lo[0] = Math.min(lo[0], tx)
++          lo[1] = Math.min(lo[1], ty)
++          lo[2] = Math.min(lo[2], f)
++          lo_intensity = Math.min(lo_intensity, vf)
+ 
+-    var oneEm = 24;
+-    var lineHeight = layout['text-line-height'] * oneEm;
+-    var maxWidth = layout['symbol-placement'] !== 'line' ? layout['text-max-width'] * oneEm : 0;
+-    var spacing = layout['text-letter-spacing'] * oneEm;
+-    var textOffset = [layout['text-offset'][0] * oneEm, layout['text-offset'][1] * oneEm];
+-    var fontstack = this.fontstack = layout['text-font'].join(',');
++          hi[0] = Math.max(hi[0], tx)
++          hi[1] = Math.max(hi[1], ty)
++          hi[2] = Math.max(hi[2], f)
++          hi_intensity = Math.max(hi_intensity, vf)
+ 
+-    var geometries = [];
+-    for (var g = 0; g < features.length; g++) {
+-        geometries.push(loadGeometry(features[g]));
++          vertexCount += 1
++        }
++      }
+     }
+ 
+-    if (layout['symbol-placement'] === 'line') {
+-        // Merge adjacent lines with the same text to improve labelling.
+-        // It's better to place labels on one long line than on many short segments.
+-        var merged = mergeLines(features, textFeatures, geometries);
++    if (params.intensityBounds) {
++      lo_intensity = +params.intensityBounds[0]
++      hi_intensity = +params.intensityBounds[1]
++    }
+ 
+-        geometries = merged.geometries;
+-        features = merged.features;
+-        textFeatures = merged.textFeatures;
++    // Scale all vertex intensities
++    for (i = 6; i < tptr; i += 10) {
++      tverts[i] = (tverts[i] - lo_intensity) / (hi_intensity - lo_intensity)
+     }
+ 
+-    var shapedText, shapedIcon;
++    this._vertexCount = vertexCount
++    this._coordinateBuffer.update(tverts.subarray(0, tptr))
++    pool.freeFloat(tverts)
++    pool.free(normals.data)
+ 
+-    for (var k = 0; k < features.length; k++) {
+-        if (!geometries[k]) continue;
++    // Update bounds
++    this.bounds = [lo, hi]
+ 
+-        if (textFeatures[k]) {
+-            shapedText = shapeText(textFeatures[k], stacks[fontstack], maxWidth,
+-                    lineHeight, horizontalAlign, verticalAlign, justify, spacing, textOffset);
+-        } else {
+-            shapedText = null;
+-        }
++    // Save intensity
++    this.intensity = params.intensity || this._field[2]
+ 
+-        if (layout['icon-image']) {
+-            var iconName = resolveTokens(features[k].properties, layout['icon-image']);
+-            var image = icons[iconName];
+-            shapedIcon = shapeIcon(image, layout);
++    if(this.intensityBounds[0] !== lo_intensity || this.intensityBounds[1] !== hi_intensity) {
++        levelsChanged = true
++    }
+ 
+-            if (image) {
+-                if (this.sdfIcons === undefined) {
+-                    this.sdfIcons = image.sdf;
+-                } else if (this.sdfIcons !== image.sdf) {
+-                    console.warn('Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer');
+-                }
+-                if (image.pixelRatio !== 1) {
+-                    this.iconsNeedLinear = true;
+-                }
+-            }
+-        } else {
+-            shapedIcon = null;
+-        }
++    // Save intensity bound
++    this.intensityBounds = [lo_intensity, hi_intensity]
++  }
+ 
+-        if (shapedText || shapedIcon) {
+-            this.addFeature(geometries[k], shapedText, shapedIcon, features[k].index);
++  // Update level crossings
++  if ('levels' in params) {
++    var levels = params.levels
++    if (!Array.isArray(levels[0])) {
++      levels = [ [], [], levels ]
++    } else {
++      levels = levels.slice()
++    }
++    for (i = 0; i < 3; ++i) {
++      levels[i] = levels[i].slice()
++      levels.sort(function (a, b) {
++        return a - b
++      })
++    }
++    change_test:
++    for (i = 0; i < 3; ++i) {
++      if (levels[i].length !== this.contourLevels[i].length) {
++        levelsChanged = true
++        break
++      }
++      for (j = 0; j < levels[i].length; ++j) {
++        if (levels[i][j] !== this.contourLevels[i][j]) {
++          levelsChanged = true
++          break change_test
+         }
++      }
+     }
++    this.contourLevels = levels
++  }
+ 
+-    this.placeFeatures(collisionTile, this.showCollisionBoxes);
++  if (levelsChanged) {
++    fields = this._field
++    shape = this.shape
+ 
+-    this.trimArrays();
+-};
++    // Update contour lines
++    var contourVerts = []
+ 
+-SymbolBucket.prototype.addFeature = function(lines, shapedText, shapedIcon, featureIndex) {
+-    var layout = this.layer.layout;
++    for (var dim = 0; dim < 3; ++dim) {
++      levels = this.contourLevels[dim]
++      var levelOffsets = []
++      var levelCounts = []
+ 
+-    var glyphSize = 24;
++      var parts = [0, 0, 0]
+ 
+-    var fontScale = this.adjustedTextSize / glyphSize,
+-        textMaxSize = this.adjustedTextMaxSize !== undefined ? this.adjustedTextMaxSize : this.adjustedTextSize,
+-        textBoxScale = this.tilePixelRatio * fontScale,
+-        textMaxBoxScale = this.tilePixelRatio * textMaxSize / glyphSize,
+-        iconBoxScale = this.tilePixelRatio * this.adjustedIconSize,
+-        symbolMinDistance = this.tilePixelRatio * layout['symbol-spacing'],
+-        avoidEdges = layout['symbol-avoid-edges'],
+-        textPadding = layout['text-padding'] * this.tilePixelRatio,
+-        iconPadding = layout['icon-padding'] * this.tilePixelRatio,
+-        textMaxAngle = layout['text-max-angle'] / 180 * Math.PI,
+-        textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
+-        iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
+-        mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
+-            layout['text-ignore-placement'] || layout['icon-ignore-placement'],
+-        isLine = layout['symbol-placement'] === 'line',
+-        textRepeatDistance = symbolMinDistance / 2;
++      for (i = 0; i < levels.length; ++i) {
++        var graph = surfaceNets(this._field[dim], levels[i])
++        levelOffsets.push((contourVerts.length / 5) | 0)
++        vertexCount = 0
+ 
+-    if (isLine) {
+-        lines = clipLine(lines, 0, 0, EXTENT, EXTENT);
+-    }
++        edge_loop:
++        for (j = 0; j < graph.cells.length; ++j) {
++          var e = graph.cells[j]
++          for (k = 0; k < 2; ++k) {
++            var p = graph.positions[e[k]]
+ 
+-    for (var i = 0; i < lines.length; i++) {
+-        var line = lines[i];
++            var x = p[0]
++            var ix = Math.floor(x) | 0
++            var fx = x - ix
+ 
+-        // Calculate the anchor points around which you want to place labels
+-        var anchors;
+-        if (isLine) {
+-            anchors = getAnchors(
+-                line,
+-                symbolMinDistance,
+-                textMaxAngle,
+-                shapedText,
+-                shapedIcon,
+-                glyphSize,
+-                textMaxBoxScale,
+-                this.overscaling,
+-                EXTENT
+-            );
+-        } else {
+-            anchors = [ new Anchor(line[0].x, line[0].y, 0) ];
++            var y = p[1]
++            var iy = Math.floor(y) | 0
++            var fy = y - iy
++
++            var hole = false
++            dd_loop:
++            for (var dd = 0; dd < 3; ++dd) {
++              parts[dd] = 0.0
++              var iu = (dim + dd + 1) % 3
++              for (dx = 0; dx < 2; ++dx) {
++                var s = dx ? fx : 1.0 - fx
++                r = Math.min(Math.max(ix + dx, 0), shape[0]) | 0
++                for (dy = 0; dy < 2; ++dy) {
++                  var t = dy ? fy : 1.0 - fy
++                  c = Math.min(Math.max(iy + dy, 0), shape[1]) | 0
++
++                  if (dd < 2) {
++                    f = this._field[iu].get(r, c)
++                  } else {
++                    f = (this.intensity.get(r, c) - this.intensityBounds[0]) / (this.intensityBounds[1] - this.intensityBounds[0])
++                  }
++                  if (!isFinite(f) || isNaN(f)) {
++                    hole = true
++                    break dd_loop
++                  }
++
++                  var w = s * t
++                  parts[dd] += w * f
++                }
++              }
++            }
++
++            if (!hole) {
++              contourVerts.push(parts[0], parts[1], p[0], p[1], parts[2])
++              vertexCount += 1
++            } else {
++              if (k > 0) {
++                // If we already added first edge, pop off verts
++                for (var l = 0; l < 5; ++l) {
++                  contourVerts.pop()
++                }
++                vertexCount -= 1
++              }
++              continue edge_loop
++            }
++          }
+         }
++        levelCounts.push(vertexCount)
++      }
+ 
+-        // For each potential label, create the placement features used to check for collisions, and the quads use for rendering.
+-        for (var j = 0, len = anchors.length; j < len; j++) {
+-            var anchor = anchors[j];
++      // Store results
++      this._contourOffsets[dim] = levelOffsets
++      this._contourCounts[dim] = levelCounts
++    }
+ 
+-            if (shapedText && isLine) {
+-                if (this.anchorIsTooClose(shapedText.text, textRepeatDistance, anchor)) {
+-                    continue;
+-                }
+-            }
++    var floatBuffer = pool.mallocFloat(contourVerts.length)
++    for (i = 0; i < contourVerts.length; ++i) {
++      floatBuffer[i] = contourVerts[i]
++    }
++    this._contourBuffer.update(floatBuffer)
++    pool.freeFloat(floatBuffer)
++  }
+ 
+-            var inside = !(anchor.x < 0 || anchor.x > EXTENT || anchor.y < 0 || anchor.y > EXTENT);
++  if (params.colormap) {
++    this._colorMap.setPixels(genColormap(params.colormap))
++  }
++}
+ 
+-            if (avoidEdges && !inside) continue;
++proto.dispose = function () {
++  this._shader.dispose()
++  this._vao.dispose()
++  this._coordinateBuffer.dispose()
++  this._colorMap.dispose()
++  this._contourBuffer.dispose()
++  this._contourVAO.dispose()
++  this._contourShader.dispose()
++  this._contourPickShader.dispose()
++  this._dynamicBuffer.dispose()
++  this._dynamicVAO.dispose()
++  for (var i = 0; i < 3; ++i) {
++    pool.freeFloat(this._field[i].data)
++  }
++}
+ 
+-            // Normally symbol layers are drawn across tile boundaries. Only symbols
+-            // with their anchors within the tile boundaries are added to the buffers
+-            // to prevent symbols from being drawn twice.
+-            //
+-            // Symbols in layers with overlap are sorted in the y direction so that
+-            // symbols lower on the canvas are drawn on top of symbols near the top.
+-            // To preserve this order across tile boundaries these symbols can't
+-            // be drawn across tile boundaries. Instead they need to be included in
+-            // the buffers for both tiles and clipped to tile boundaries at draw time.
+-            var addToBuffers = inside || mayOverlap;
++proto.highlight = function (selection) {
++  if (!selection) {
++    this._dynamicCounts = [0, 0, 0]
++    this.dyanamicLevel = [NaN, NaN, NaN]
++    this.highlightLevel = [-1, -1, -1]
++    return
++  }
+ 
+-            this.symbolInstances.push(new SymbolInstance(anchor, line, shapedText, shapedIcon, layout,
+-                        addToBuffers, this.symbolInstances.length, this.collisionBoxArray, featureIndex, this.sourceLayerIndex, this.index,
+-                        textBoxScale, textPadding, textAlongLine,
+-                        iconBoxScale, iconPadding, iconAlongLine));
+-        }
++  for (var i = 0; i < 3; ++i) {
++    if (this.enableHighlight[i]) {
++      this.highlightLevel[i] = selection.level[i]
++    } else {
++      this.highlightLevel[i] = -1
+     }
+-};
++  }
+ 
+-SymbolBucket.prototype.anchorIsTooClose = function(text, repeatDistance, anchor) {
+-    var compareText = this.compareText;
+-    if (!(text in compareText)) {
+-        compareText[text] = [];
+-    } else {
+-        var otherAnchors = compareText[text];
+-        for (var k = otherAnchors.length - 1; k >= 0; k--) {
+-            if (anchor.dist(otherAnchors[k]) < repeatDistance) {
+-                // If it's within repeatDistance of one anchor, stop looking
+-                return true;
+-            }
+-        }
++  var levels
++  if (this.snapToData) {
++    levels = selection.dataCoordinate
++  } else {
++    levels = selection.position
++  }
++  if ((!this.enableDynamic[0] || levels[0] === this.dynamicLevel[0]) &&
++    (!this.enableDynamic[1] || levels[1] === this.dynamicLevel[1]) &&
++    (!this.enableDynamic[2] || levels[2] === this.dynamicLevel[2])) {
++    return
++  }
++
++  var vertexCount = 0
++  var shape = this.shape
++  var scratchBuffer = pool.mallocFloat(12 * shape[0] * shape[1])
++
++  for (var d = 0; d < 3; ++d) {
++    if (!this.enableDynamic[d]) {
++      this.dynamicLevel[d] = NaN
++      this._dynamicCounts[d] = 0
++      continue
+     }
+-    // If anchor is not within repeatDistance of any other anchor, add to array
+-    compareText[text].push(anchor);
+-    return false;
+-};
+ 
+-SymbolBucket.prototype.placeFeatures = function(collisionTile, showCollisionBoxes) {
+-    this.recalculateStyleLayers();
++    this.dynamicLevel[d] = levels[d]
+ 
+-    // Calculate which labels can be shown and when they can be shown and
+-    // create the bufers used for rendering.
++    var u = (d + 1) % 3
++    var v = (d + 2) % 3
+ 
+-    this.createArrays();
++    var f = this._field[d]
++    var g = this._field[u]
++    var h = this._field[v]
++    var intensity = this.intensity
+ 
+-    var layout = this.layer.layout;
++    var graph = surfaceNets(f, levels[d])
++    var edges = graph.cells
++    var positions = graph.positions
+ 
+-    var maxScale = collisionTile.maxScale;
++    this._dynamicOffsets[d] = vertexCount
+ 
+-    var textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
+-    var iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
++    for (i = 0; i < edges.length; ++i) {
++      var e = edges[i]
++      for (var j = 0; j < 2; ++j) {
++        var p = positions[e[j]]
+ 
+-    var mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
+-        layout['text-ignore-placement'] || layout['icon-ignore-placement'];
++        var x = +p[0]
++        var ix = x | 0
++        var jx = Math.min(ix + 1, shape[0]) | 0
++        var fx = x - ix
++        var hx = 1.0 - fx
+ 
+-    // Sort symbols by their y position on the canvas so that they lower symbols
+-    // are drawn on top of higher symbols.
+-    // Don't sort symbols that won't overlap because it isn't necessary and
+-    // because it causes more labels to pop in and out when rotating.
+-    if (mayOverlap) {
+-        var angle = collisionTile.angle;
+-        var sin = Math.sin(angle),
+-            cos = Math.cos(angle);
++        var y = +p[1]
++        var iy = y | 0
++        var jy = Math.min(iy + 1, shape[1]) | 0
++        var fy = y - iy
++        var hy = 1.0 - fy
+ 
+-        this.symbolInstances.sort(function(a, b) {
+-            var aRotated = (sin * a.x + cos * a.y) | 0;
+-            var bRotated = (sin * b.x + cos * b.y) | 0;
+-            return (aRotated - bRotated) || (b.index - a.index);
+-        });
+-    }
++        var w00 = hx * hy
++        var w01 = hx * fy
++        var w10 = fx * hy
++        var w11 = fx * fy
+ 
+-    for (var p = 0; p < this.symbolInstances.length; p++) {
+-        var symbolInstance = this.symbolInstances[p];
+-        var hasText = symbolInstance.hasText;
+-        var hasIcon = symbolInstance.hasIcon;
++        var cu = w00 * g.get(ix, iy) +
++          w01 * g.get(ix, jy) +
++          w10 * g.get(jx, iy) +
++          w11 * g.get(jx, jy)
+ 
+-        var iconWithoutText = layout['text-optional'] || !hasText,
+-            textWithoutIcon = layout['icon-optional'] || !hasIcon;
++        var cv = w00 * h.get(ix, iy) +
++          w01 * h.get(ix, jy) +
++          w10 * h.get(jx, iy) +
++          w11 * h.get(jx, jy)
+ 
++        if (isNaN(cu) || isNaN(cv)) {
++          if (j) {
++            vertexCount -= 1
++          }
++          break
++        }
+ 
+-        // Calculate the scales at which the text and icon can be placed without collision.
++        scratchBuffer[2 * vertexCount + 0] = cu
++        scratchBuffer[2 * vertexCount + 1] = cv
+ 
+-        var glyphScale = hasText ?
+-            collisionTile.placeCollisionFeature(symbolInstance.textCollisionFeature,
+-                    layout['text-allow-overlap'], layout['symbol-avoid-edges']) :
+-            collisionTile.minScale;
++        vertexCount += 1
++      }
++    }
+ 
+-        var iconScale = hasIcon ?
+-            collisionTile.placeCollisionFeature(symbolInstance.iconCollisionFeature,
+-                    layout['icon-allow-overlap'], layout['symbol-avoid-edges']) :
+-            collisionTile.minScale;
++    this._dynamicCounts[d] = vertexCount - this._dynamicOffsets[d]
++  }
+ 
++  this._dynamicBuffer.update(scratchBuffer.subarray(0, 2 * vertexCount))
++  pool.freeFloat(scratchBuffer)
++}
+ 
+-        // Combine the scales for icons and text.
++function createSurfacePlot (params) {
++  var gl = params.gl
++  var shader = createShader(gl)
++  var pickShader = createPickShader(gl)
++  var contourShader = createContourShader(gl)
++  var contourPickShader = createPickContourShader(gl)
+ 
+-        if (!iconWithoutText && !textWithoutIcon) {
+-            iconScale = glyphScale = Math.max(iconScale, glyphScale);
+-        } else if (!textWithoutIcon && glyphScale) {
+-            glyphScale = Math.max(iconScale, glyphScale);
+-        } else if (!iconWithoutText && iconScale) {
+-            iconScale = Math.max(iconScale, glyphScale);
+-        }
++  var coordinateBuffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++    { buffer: coordinateBuffer,
++      size: 4,
++      stride: SURFACE_VERTEX_SIZE,
++      offset: 0
++    },
++    { buffer: coordinateBuffer,
++      size: 3,
++      stride: SURFACE_VERTEX_SIZE,
++      offset: 16
++    },
++    {
++      buffer: coordinateBuffer,
++      size: 3,
++      stride: SURFACE_VERTEX_SIZE,
++      offset: 28
++    }
++  ])
+ 
++  var contourBuffer = createBuffer(gl)
++  var contourVAO = createVAO(gl, [
++    {
++      buffer: contourBuffer,
++      size: 4,
++      stride: 20,
++      offset: 0
++    },
++    {
++      buffer: contourBuffer,
++      size: 1,
++      stride: 20,
++      offset: 16
++    }
++  ])
+ 
+-        // Insert final placement into collision tree and add glyphs/icons to buffers
++  var dynamicBuffer = createBuffer(gl)
++  var dynamicVAO = createVAO(gl, [
++    {
++      buffer: dynamicBuffer,
++      size: 2,
++      type: gl.FLOAT
++    }])
+ 
+-        if (hasText) {
+-            collisionTile.insertCollisionFeature(symbolInstance.textCollisionFeature, glyphScale, layout['text-ignore-placement']);
+-            if (glyphScale <= maxScale) {
+-                this.addSymbols('glyph', symbolInstance.glyphQuads, glyphScale, layout['text-keep-upright'], textAlongLine, collisionTile.angle);
+-            }
+-        }
++  var cmap = createTexture(gl, 1, N_COLORS, gl.RGBA, gl.UNSIGNED_BYTE)
++  cmap.minFilter = gl.LINEAR
++  cmap.magFilter = gl.LINEAR
+ 
+-        if (hasIcon) {
+-            collisionTile.insertCollisionFeature(symbolInstance.iconCollisionFeature, iconScale, layout['icon-ignore-placement']);
+-            if (iconScale <= maxScale) {
+-                this.addSymbols('icon', symbolInstance.iconQuads, iconScale, layout['icon-keep-upright'], iconAlongLine, collisionTile.angle);
+-            }
+-        }
++  var surface = new SurfacePlot(
++    gl,
++    [0, 0],
++    [[0, 0, 0], [0, 0, 0]],
++    shader,
++    pickShader,
++    coordinateBuffer,
++    vao,
++    cmap,
++    contourShader,
++    contourPickShader,
++    contourBuffer,
++    contourVAO,
++    dynamicBuffer,
++    dynamicVAO)
+ 
+-    }
++  var nparams = {
++    levels: [[], [], []]
++  }
++  for (var id in params) {
++    nparams[id] = params[id]
++  }
++  nparams.colormap = nparams.colormap || 'jet'
+ 
+-    if (showCollisionBoxes) this.addToDebugBuffers(collisionTile);
+-};
++  surface.update(nparams)
+ 
+-SymbolBucket.prototype.addSymbols = function(programName, quads, scale, keepUpright, alongLine, placementAngle) {
++  return surface
++}
+ 
+-    var group = this.makeRoomFor(programName, 4 * quads.length);
++},{"./lib/shaders":200,"binary-search-bounds":48,"bit-twiddle":49,"colormap":75,"gl-buffer":121,"gl-mat4/invert":142,"gl-mat4/multiply":144,"gl-texture2d":202,"gl-vao":206,"ndarray":385,"ndarray-gradient":376,"ndarray-ops":379,"ndarray-pack":380,"surface-nets":440,"typedarray-pool":449}],202:[function(require,module,exports){
++'use strict'
+ 
+-    var elementArray = group.layout.element;
+-    var vertexArray = group.layout.vertex;
++var ndarray = require('ndarray')
++var ops     = require('ndarray-ops')
++var pool    = require('typedarray-pool')
+ 
+-    var zoom = this.zoom;
+-    var placementZoom = Math.max(Math.log(scale) / Math.LN2 + zoom, 0);
++module.exports = createTexture2D
+ 
+-    for (var k = 0; k < quads.length; k++) {
++var linearTypes = null
++var filterTypes = null
++var wrapTypes   = null
+ 
+-        var symbol = quads[k],
+-            angle = symbol.angle;
++function lazyInitLinearTypes(gl) {
++  linearTypes = [
++    gl.LINEAR,
++    gl.NEAREST_MIPMAP_LINEAR,
++    gl.LINEAR_MIPMAP_NEAREST,
++    gl.LINEAR_MIPMAP_NEAREST
++  ]
++  filterTypes = [
++    gl.NEAREST,
++    gl.LINEAR,
++    gl.NEAREST_MIPMAP_NEAREST,
++    gl.NEAREST_MIPMAP_LINEAR,
++    gl.LINEAR_MIPMAP_NEAREST,
++    gl.LINEAR_MIPMAP_LINEAR
++  ]
++  wrapTypes = [
++    gl.REPEAT,
++    gl.CLAMP_TO_EDGE,
++    gl.MIRRORED_REPEAT
++  ]
++}
+ 
+-        // drop upside down versions of glyphs
+-        var a = (angle + placementAngle + Math.PI) % (Math.PI * 2);
+-        if (keepUpright && alongLine && (a <= Math.PI / 2 || a > Math.PI * 3 / 2)) continue;
++var convertFloatToUint8 = function(out, inp) {
++  ops.muls(out, inp, 255.0)
++}
+ 
+-        var tl = symbol.tl,
+-            tr = symbol.tr,
+-            bl = symbol.bl,
+-            br = symbol.br,
+-            tex = symbol.tex,
+-            anchorPoint = symbol.anchorPoint,
++function reshapeTexture(tex, w, h) {
++  var gl = tex.gl
++  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(w < 0 || w > maxSize || h < 0 || h > maxSize) {
++    throw new Error('gl-texture2d: Invalid texture size')
++  }
++  tex._shape = [w, h]
++  tex.bind()
++  gl.texImage2D(gl.TEXTURE_2D, 0, tex.format, w, h, 0, tex.format, tex.type, null)
++  tex._mipLevels = [0]
++  return tex
++}
+ 
+-            minZoom = Math.max(zoom + Math.log(symbol.minScale) / Math.LN2, placementZoom),
+-            maxZoom = Math.min(zoom + Math.log(symbol.maxScale) / Math.LN2, 25);
++function Texture2D(gl, handle, width, height, format, type) {
++  this.gl = gl
++  this.handle = handle
++  this.format = format
++  this.type = type
++  this._shape = [width, height]
++  this._mipLevels = [0]
++  this._magFilter = gl.NEAREST
++  this._minFilter = gl.NEAREST
++  this._wrapS = gl.CLAMP_TO_EDGE
++  this._wrapT = gl.CLAMP_TO_EDGE
++  this._anisoSamples = 1
+ 
+-        if (maxZoom <= minZoom) continue;
++  var parent = this
++  var wrapVector = [this._wrapS, this._wrapT]
++  Object.defineProperties(wrapVector, [
++    {
++      get: function() {
++        return parent._wrapS
++      },
++      set: function(v) {
++        return parent.wrapS = v
++      }
++    },
++    {
++      get: function() {
++        return parent._wrapT
++      },
++      set: function(v) {
++        return parent.wrapT = v
++      }
++    }
++  ])
++  this._wrapVector = wrapVector
+ 
+-        // Lower min zoom so that while fading out the label it can be shown outside of collision-free zoom levels
+-        if (minZoom === placementZoom) minZoom = 0;
++  var shapeVector = [this._shape[0], this._shape[1]]
++  Object.defineProperties(shapeVector, [
++    {
++      get: function() {
++        return parent._shape[0]
++      },
++      set: function(v) {
++        return parent.width = v
++      }
++    },
++    {
++      get: function() {
++        return parent._shape[1]
++      },
++      set: function(v) {
++        return parent.height = v
++      }
++    }
++  ])
++  this._shapeVector = shapeVector
++}
+ 
+-        var index = addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tl.x, tl.y, tex.x, tex.y, minZoom, maxZoom, placementZoom);
+-        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tr.x, tr.y, tex.x + tex.w, tex.y, minZoom, maxZoom, placementZoom);
+-        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, bl.x, bl.y, tex.x, tex.y + tex.h, minZoom, maxZoom, placementZoom);
+-        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, br.x, br.y, tex.x + tex.w, tex.y + tex.h, minZoom, maxZoom, placementZoom);
++var proto = Texture2D.prototype
+ 
+-        elementArray.emplaceBack(index, index + 1, index + 2);
+-        elementArray.emplaceBack(index + 1, index + 2, index + 3);
++Object.defineProperties(proto, {
++  minFilter: {
++    get: function() {
++      return this._minFilter
++    },
++    set: function(v) {
++      this.bind()
++      var gl = this.gl
++      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
++        if(!gl.getExtension('OES_texture_float_linear')) {
++          v = gl.NEAREST
++        }
++      }
++      if(filterTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown filter mode ' + v)
++      }
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, v)
++      return this._minFilter = v
++    }
++  },
++  magFilter: {
++    get: function() {
++      return this._magFilter
++    },
++    set: function(v) {
++      this.bind()
++      var gl = this.gl
++      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
++        if(!gl.getExtension('OES_texture_float_linear')) {
++          v = gl.NEAREST
++        }
++      }
++      if(filterTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown filter mode ' + v)
++      }
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, v)
++      return this._magFilter = v
++    }
++  },
++  mipSamples: {
++    get: function() {
++      return this._anisoSamples
++    },
++    set: function(i) {
++      var psamples = this._anisoSamples
++      this._anisoSamples = Math.max(i, 1)|0
++      if(psamples !== this._anisoSamples) {
++        var ext = this.gl.getExtension('EXT_texture_filter_anisotropic')
++        if(ext) {
++          this.gl.texParameterf(this.gl.TEXTURE_2D, ext.TEXTURE_MAX_ANISOTROPY_EXT, this._anisoSamples)
++        }
++      }
++      return this._anisoSamples
++    }
++  },
++  wrapS: {
++    get: function() {
++      return this._wrapS
++    },
++    set: function(v) {
++      this.bind()
++      if(wrapTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++      }
++      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_S, v)
++      return this._wrapS = v
++    }
++  },
++  wrapT: {
++    get: function() {
++      return this._wrapT
++    },
++    set: function(v) {
++      this.bind()
++      if(wrapTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++      }
++      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_T, v)
++      return this._wrapT = v
+     }
++  },
++  wrap: {
++    get: function() {
++      return this._wrapVector
++    },
++    set: function(v) {
++      if(!Array.isArray(v)) {
++        v = [v,v]
++      }
++      if(v.length !== 2) {
++        throw new Error('gl-texture2d: Must specify wrap mode for rows and columns')
++      }
++      for(var i=0; i<2; ++i) {
++        if(wrapTypes.indexOf(v[i]) < 0) {
++          throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++        }
++      }
++      this._wrapS = v[0]
++      this._wrapT = v[1]
+ 
+-};
+-
+-SymbolBucket.prototype.updateIcons = function(icons) {
+-    this.recalculateStyleLayers();
+-    var iconValue = this.layer.layout['icon-image'];
+-    if (!iconValue) return;
++      var gl = this.gl
++      this.bind()
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, this._wrapS)
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, this._wrapT)
+ 
+-    for (var i = 0; i < this.features.length; i++) {
+-        var iconName = resolveTokens(this.features[i].properties, iconValue);
+-        if (iconName)
+-            icons[iconName] = true;
++      return v
+     }
+-};
+-
+-SymbolBucket.prototype.updateFont = function(stacks) {
+-    this.recalculateStyleLayers();
+-    var fontName = this.layer.layout['text-font'],
+-        stack = stacks[fontName] = stacks[fontName] || {};
+-
+-    this.textFeatures = resolveText(this.features, this.layer.layout, stack);
+-};
+-
+-SymbolBucket.prototype.addToDebugBuffers = function(collisionTile) {
+-    var group = this.makeRoomFor('collisionBox', 0);
+-    var vertexArray = group.layout.vertex;
+-    var angle = -collisionTile.angle;
+-    var yStretch = collisionTile.yStretch;
+-
+-    for (var j = 0; j < this.symbolInstances.length; j++) {
+-        for (var i = 0; i < 2; i++) {
+-            var feature = this.symbolInstances[j][i === 0 ? 'textCollisionFeature' : 'iconCollisionFeature'];
+-            if (!feature) continue;
+-
+-            for (var b = feature.boxStartIndex; b < feature.boxEndIndex; b++) {
+-                var box = this.collisionBoxArray.get(b);
+-                var anchorPoint = box.anchorPoint;
+-
+-                var tl = new Point(box.x1, box.y1 * yStretch)._rotate(angle);
+-                var tr = new Point(box.x2, box.y1 * yStretch)._rotate(angle);
+-                var bl = new Point(box.x1, box.y2 * yStretch)._rotate(angle);
+-                var br = new Point(box.x2, box.y2 * yStretch)._rotate(angle);
+-
+-                var maxZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.maxScale) / Math.LN2));
+-                var placementZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.placementScale) / Math.LN2));
+-
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
+-            }
++  },
++  shape: {
++    get: function() {
++      return this._shapeVector
++    },
++    set: function(x) {
++      if(!Array.isArray(x)) {
++        x = [x|0,x|0]
++      } else {
++        if(x.length !== 2) {
++          throw new Error('gl-texture2d: Invalid texture shape')
+         }
++      }
++      reshapeTexture(this, x[0]|0, x[1]|0)
++      return [x[0]|0, x[1]|0]
+     }
+-};
+-
+-function SymbolInstance(anchor, line, shapedText, shapedIcon, layout, addToBuffers, index, collisionBoxArray, featureIndex, sourceLayerIndex, bucketIndex,
+-                        textBoxScale, textPadding, textAlongLine,
+-                        iconBoxScale, iconPadding, iconAlongLine) {
+-
+-    this.x = anchor.x;
+-    this.y = anchor.y;
+-    this.index = index;
+-    this.hasText = !!shapedText;
+-    this.hasIcon = !!shapedIcon;
+-
+-    if (this.hasText) {
+-        this.glyphQuads = addToBuffers ? getGlyphQuads(anchor, shapedText, textBoxScale, line, layout, textAlongLine) : [];
+-        this.textCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
+-                shapedText, textBoxScale, textPadding, textAlongLine, false);
++  },
++  width: {
++    get: function() {
++      return this._shape[0]
++    },
++    set: function(w) {
++      w = w|0
++      reshapeTexture(this, w, this._shape[1])
++      return w
+     }
+-
+-    if (this.hasIcon) {
+-        this.iconQuads = addToBuffers ? getIconQuads(anchor, shapedIcon, iconBoxScale, line, layout, iconAlongLine) : [];
+-        this.iconCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
+-                shapedIcon, iconBoxScale, iconPadding, iconAlongLine, true);
++  },
++  height: {
++    get: function() {
++      return this._shape[1]
++    },
++    set: function(h) {
++      h = h|0
++      reshapeTexture(this, this._shape[0], h)
++      return h
+     }
+-}
+-
+-},{"../../symbol/anchor":303,"../../symbol/clip_line":305,"../../symbol/collision_feature":307,"../../symbol/get_anchors":309,"../../symbol/mergelines":312,"../../symbol/quads":313,"../../symbol/resolve_text":314,"../../symbol/shaping":315,"../../util/token":348,"../../util/util":349,"../bucket":247,"../load_geometry":254,"point-geometry":404}],252:[function(require,module,exports){
+-'use strict';
+-
+-var assert = require('assert');
++  }
++})
+ 
+-module.exports = Buffer;
++proto.bind = function(unit) {
++  var gl = this.gl
++  if(unit !== undefined) {
++    gl.activeTexture(gl.TEXTURE0 + (unit|0))
++  }
++  gl.bindTexture(gl.TEXTURE_2D, this.handle)
++  if(unit !== undefined) {
++    return (unit|0)
++  }
++  return gl.getParameter(gl.ACTIVE_TEXTURE) - gl.TEXTURE0
++}
+ 
+-/**
+- * The `Buffer` class turns a `StructArray` into a WebGL buffer. Each member of the StructArray's
+- * Struct type is converted to a WebGL atribute.
+- *
+- * @class Buffer
+- * @private
+- * @param {object} array A serialized StructArray.
+- * @param {object} arrayType A serialized StructArrayType.
+- * @param {BufferType} type
+- */
+-function Buffer(array, arrayType, type) {
+-    this.arrayBuffer = array.arrayBuffer;
+-    this.length = array.length;
+-    this.attributes = arrayType.members;
+-    this.itemSize = arrayType.bytesPerElement;
+-    this.type = type;
+-    this.arrayType = arrayType;
++proto.dispose = function() {
++  this.gl.deleteTexture(this.handle)
+ }
+ 
+-/**
+- * Bind this buffer to a WebGL context.
+- * @private
+- * @param gl The WebGL context
+- */
+-Buffer.prototype.bind = function(gl) {
+-    var type = gl[this.type];
++proto.generateMipmap = function() {
++  this.bind()
++  this.gl.generateMipmap(this.gl.TEXTURE_2D)
+ 
+-    if (!this.buffer) {
+-        this.buffer = gl.createBuffer();
+-        gl.bindBuffer(type, this.buffer);
+-        gl.bufferData(type, this.arrayBuffer, gl.STATIC_DRAW);
++  //Update mip levels
++  var l = Math.min(this._shape[0], this._shape[1])
++  for(var i=0; l>0; ++i, l>>>=1) {
++    if(this._mipLevels.indexOf(i) < 0) {
++      this._mipLevels.push(i)
++    }
++  }
++}
+ 
+-        // dump array buffer once it's bound to gl
+-        this.arrayBuffer = null;
++proto.setPixels = function(data, x_off, y_off, mip_level) {
++  var gl = this.gl
++  this.bind()
++  if(Array.isArray(x_off)) {
++    mip_level = y_off
++    y_off = x_off[1]|0
++    x_off = x_off[0]|0
++  } else {
++    x_off = x_off || 0
++    y_off = y_off || 0
++  }
++  mip_level = mip_level || 0
++  if(data instanceof HTMLCanvasElement ||
++     data instanceof ImageData ||
++     data instanceof HTMLImageElement ||
++     data instanceof HTMLVideoElement) {
++    var needsMip = this._mipLevels.indexOf(mip_level) < 0
++    if(needsMip) {
++      gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, this.type, data)
++      this._mipLevels.push(mip_level)
+     } else {
+-        gl.bindBuffer(type, this.buffer);
++      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, this.format, this.type, data)
+     }
+-};
++  } else if(data.shape && data.stride && data.data) {
++    if(data.shape.length < 2 ||
++       x_off + data.shape[1] > this._shape[1]>>>mip_level ||
++       y_off + data.shape[0] > this._shape[0]>>>mip_level ||
++       x_off < 0 ||
++       y_off < 0) {
++      throw new Error('gl-texture2d: Texture dimensions are out of bounds')
++    }
++    texSubImageArray(gl, x_off, y_off, mip_level, this.format, this.type, this._mipLevels, data)
++  } else {
++    throw new Error('gl-texture2d: Unsupported data type')
++  }
++}
+ 
+-/**
+- * @enum {string} AttributeType
+- * @private
+- * @readonly
+- */
+-var AttributeType = {
+-    Int8:   'BYTE',
+-    Uint8:  'UNSIGNED_BYTE',
+-    Int16:  'SHORT',
+-    Uint16: 'UNSIGNED_SHORT'
+-};
+ 
+-/**
+- * Set the attribute pointers in a WebGL context
+- * @private
+- * @param gl The WebGL context
+- * @param program The active WebGL program
+- */
+-Buffer.prototype.setVertexAttribPointers = function(gl, program) {
+-    for (var j = 0; j < this.attributes.length; j++) {
+-        var member = this.attributes[j];
+-        var attribIndex = program[member.name];
+-        assert(attribIndex !== undefined, 'array member "' + member.name + '" name does not match shader attribute name');
++function isPacked(shape, stride) {
++  if(shape.length === 3) {
++    return  (stride[2] === 1) &&
++            (stride[1] === shape[0]*shape[2]) &&
++            (stride[0] === shape[2])
++  }
++  return  (stride[0] === 1) &&
++          (stride[1] === shape[0])
++}
+ 
+-        gl.vertexAttribPointer(
+-            attribIndex,
+-            member.components,
+-            gl[AttributeType[member.type]],
+-            false,
+-            this.arrayType.bytesPerElement,
+-            member.offset
+-        );
++function texSubImageArray(gl, x_off, y_off, mip_level, cformat, ctype, mipLevels, array) {
++  var dtype = array.dtype
++  var shape = array.shape.slice()
++  if(shape.length < 2 || shape.length > 3) {
++    throw new Error('gl-texture2d: Invalid ndarray, must be 2d or 3d')
++  }
++  var type = 0, format = 0
++  var packed = isPacked(shape, array.stride.slice())
++  if(dtype === 'float32') {
++    type = gl.FLOAT
++  } else if(dtype === 'float64') {
++    type = gl.FLOAT
++    packed = false
++    dtype = 'float32'
++  } else if(dtype === 'uint8') {
++    type = gl.UNSIGNED_BYTE
++  } else {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++    dtype = 'uint8'
++  }
++  var channels = 1
++  if(shape.length === 2) {
++    format = gl.LUMINANCE
++    shape = [shape[0], shape[1], 1]
++    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
++  } else if(shape.length === 3) {
++    if(shape[2] === 1) {
++      format = gl.ALPHA
++    } else if(shape[2] === 2) {
++      format = gl.LUMINANCE_ALPHA
++    } else if(shape[2] === 3) {
++      format = gl.RGB
++    } else if(shape[2] === 4) {
++      format = gl.RGBA
++    } else {
++      throw new Error('gl-texture2d: Invalid shape for pixel coords')
+     }
+-};
+-
+-/**
+- * Destroy the GL buffer bound to the given WebGL context
+- * @private
+- * @param gl The WebGL context
+- */
+-Buffer.prototype.destroy = function(gl) {
+-    if (this.buffer) {
+-        gl.deleteBuffer(this.buffer);
++    channels = shape[2]
++  } else {
++    throw new Error('gl-texture2d: Invalid shape for texture')
++  }
++  //For 1-channel textures allow conversion between formats
++  if((format  === gl.LUMINANCE || format  === gl.ALPHA) &&
++     (cformat === gl.LUMINANCE || cformat === gl.ALPHA)) {
++    format = cformat
++  }
++  if(format !== cformat) {
++    throw new Error('gl-texture2d: Incompatible texture format for setPixels')
++  }
++  var size = array.size
++  var needsMip = mipLevels.indexOf(mip_level) < 0
++  if(needsMip) {
++    mipLevels.push(mip_level)
++  }
++  if(type === ctype && packed) {
++    //Array data types are compatible, can directly copy into texture
++    if(array.offset === 0 && array.data.length === size) {
++      if(needsMip) {
++        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data)
++      } else {
++        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data)
++      }
++    } else {
++      if(needsMip) {
++        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data.subarray(array.offset, array.offset+size))
++      } else {
++        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data.subarray(array.offset, array.offset+size))
++      }
+     }
+-};
+-
+-/**
+- * @enum {string} BufferType
+- * @private
+- * @readonly
+- */
+-Buffer.BufferType = {
+-    VERTEX: 'ARRAY_BUFFER',
+-    ELEMENT: 'ELEMENT_ARRAY_BUFFER'
+-};
+-
+-/**
+- * An `BufferType.ELEMENT` buffer holds indicies of a corresponding `BufferType.VERTEX` buffer.
+- * These indicies are stored in the `BufferType.ELEMENT` buffer as `UNSIGNED_SHORT`s.
+- *
+- * @private
+- * @readonly
+- */
+-Buffer.ELEMENT_ATTRIBUTE_TYPE = 'Uint16';
+-
+-/**
+- * WebGL performs best if vertex attribute offsets are aligned to 4 byte boundaries.
+- * @private
+- * @readonly
+- */
+-Buffer.VERTEX_ATTRIBUTE_ALIGNMENT = 4;
+-
+-},{"assert":52}],253:[function(require,module,exports){
+-'use strict';
+-
+-var Point = require('point-geometry');
+-var loadGeometry = require('./load_geometry');
+-var EXTENT = require('./bucket').EXTENT;
+-var featureFilter = require('feature-filter');
+-var StructArrayType = require('../util/struct_array');
+-var Grid = require('grid-index');
+-var DictionaryCoder = require('../util/dictionary_coder');
+-var vt = require('vector-tile');
+-var Protobuf = require('pbf');
+-var GeoJSONFeature = require('../util/vectortile_to_geojson');
+-var arraysIntersect = require('../util/util').arraysIntersect;
+-
+-var intersection = require('../util/intersection_tests');
+-var multiPolygonIntersectsBufferedMultiPoint = intersection.multiPolygonIntersectsBufferedMultiPoint;
+-var multiPolygonIntersectsMultiPolygon = intersection.multiPolygonIntersectsMultiPolygon;
+-var multiPolygonIntersectsBufferedMultiLine = intersection.multiPolygonIntersectsBufferedMultiLine;
++  } else {
++    //Need to do type conversion to pack data into buffer
++    var pack_buffer
++    if(ctype === gl.FLOAT) {
++      pack_buffer = pool.mallocFloat32(size)
++    } else {
++      pack_buffer = pool.mallocUint8(size)
++    }
++    var pack_view = ndarray(pack_buffer, shape, [shape[2], shape[2]*shape[0], 1])
++    if(type === gl.FLOAT && ctype === gl.UNSIGNED_BYTE) {
++      convertFloatToUint8(pack_view, array)
++    } else {
++      ops.assign(pack_view, array)
++    }
++    if(needsMip) {
++      gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, pack_buffer.subarray(0, size))
++    } else {
++      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, pack_buffer.subarray(0, size))
++    }
++    if(ctype === gl.FLOAT) {
++      pool.freeFloat32(pack_buffer)
++    } else {
++      pool.freeUint8(pack_buffer)
++    }
++  }
++}
+ 
++function initTexture(gl) {
++  var tex = gl.createTexture()
++  gl.bindTexture(gl.TEXTURE_2D, tex)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
++  return tex
++}
+ 
+-var FeatureIndexArray = new StructArrayType({
+-    members: [
+-        // the index of the feature in the original vectortile
+-        { type: 'Uint32', name: 'featureIndex' },
+-        // the source layer the feature appears in
+-        { type: 'Uint16', name: 'sourceLayerIndex' },
+-        // the bucket the feature appears in
+-        { type: 'Uint16', name: 'bucketIndex' }
+-    ]});
++function createTextureShape(gl, width, height, format, type) {
++  var maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(width < 0 || width > maxTextureSize || height < 0 || height  > maxTextureSize) {
++    throw new Error('gl-texture2d: Invalid texture shape')
++  }
++  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
++    throw new Error('gl-texture2d: Floating point textures not supported on this platform')
++  }
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, format, type, null)
++  return new Texture2D(gl, tex, width, height, format, type)
++}
+ 
+-module.exports = FeatureIndex;
++function createTextureDOM(gl, element, format, type) {
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, format, type, element)
++  return new Texture2D(gl, tex, element.width|0, element.height|0, format, type)
++}
+ 
+-function FeatureIndex(coord, overscaling, collisionTile) {
+-    if (coord.grid) {
+-        var serialized = coord;
+-        var rawTileData = overscaling;
+-        coord = serialized.coord;
+-        overscaling = serialized.overscaling;
+-        this.grid = new Grid(serialized.grid);
+-        this.featureIndexArray = new FeatureIndexArray(serialized.featureIndexArray);
+-        this.rawTileData = rawTileData;
+-        this.bucketLayerIDs = serialized.bucketLayerIDs;
++//Creates a texture from an ndarray
++function createTextureArray(gl, array) {
++  var dtype = array.dtype
++  var shape = array.shape.slice()
++  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(shape[0] < 0 || shape[0] > maxSize || shape[1] < 0 || shape[1] > maxSize) {
++    throw new Error('gl-texture2d: Invalid texture size')
++  }
++  var packed = isPacked(shape, array.stride.slice())
++  var type = 0
++  if(dtype === 'float32') {
++    type = gl.FLOAT
++  } else if(dtype === 'float64') {
++    type = gl.FLOAT
++    packed = false
++    dtype = 'float32'
++  } else if(dtype === 'uint8') {
++    type = gl.UNSIGNED_BYTE
++  } else {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++    dtype = 'uint8'
++  }
++  var format = 0
++  if(shape.length === 2) {
++    format = gl.LUMINANCE
++    shape = [shape[0], shape[1], 1]
++    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
++  } else if(shape.length === 3) {
++    if(shape[2] === 1) {
++      format = gl.ALPHA
++    } else if(shape[2] === 2) {
++      format = gl.LUMINANCE_ALPHA
++    } else if(shape[2] === 3) {
++      format = gl.RGB
++    } else if(shape[2] === 4) {
++      format = gl.RGBA
++    } else {
++      throw new Error('gl-texture2d: Invalid shape for pixel coords')
++    }
++  } else {
++    throw new Error('gl-texture2d: Invalid shape for texture')
++  }
++  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++  }
++  var buffer, buf_store
++  var size = array.size
++  if(!packed) {
++    var stride = [shape[2], shape[2]*shape[0], 1]
++    buf_store = pool.malloc(size, dtype)
++    var buf_array = ndarray(buf_store, shape, stride, 0)
++    if((dtype === 'float32' || dtype === 'float64') && type === gl.UNSIGNED_BYTE) {
++      convertFloatToUint8(buf_array, array)
+     } else {
+-        this.grid = new Grid(EXTENT, 16, 0);
+-        this.featureIndexArray = new FeatureIndexArray();
++      ops.assign(buf_array, array)
+     }
+-    this.coord = coord;
+-    this.overscaling = overscaling;
+-    this.x = coord.x;
+-    this.y = coord.y;
+-    this.z = coord.z - Math.log(overscaling) / Math.LN2;
+-    this.setCollisionTile(collisionTile);
++    buffer = buf_store.subarray(0, size)
++  } else if (array.offset === 0 && array.data.length === size) {
++    buffer = array.data
++  } else {
++    buffer = array.data.subarray(array.offset, array.offset + size)
++  }
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, shape[0], shape[1], 0, format, type, buffer)
++  if(!packed) {
++    pool.free(buf_store)
++  }
++  return new Texture2D(gl, tex, shape[0], shape[1], format, type)
+ }
+ 
+-FeatureIndex.prototype.insert = function(feature, featureIndex, sourceLayerIndex, bucketIndex) {
+-    var key = this.featureIndexArray.length;
+-    this.featureIndexArray.emplaceBack(featureIndex, sourceLayerIndex, bucketIndex);
+-    var geometry = loadGeometry(feature);
+-
+-    for (var r = 0; r < geometry.length; r++) {
+-        var ring = geometry[r];
+-
+-        // TODO: skip holes when we start using vector tile spec 2.0
+-
+-        var bbox = [Infinity, Infinity, -Infinity, -Infinity];
+-        for (var i = 0; i < ring.length; i++) {
+-            var p = ring[i];
+-            bbox[0] = Math.min(bbox[0], p.x);
+-            bbox[1] = Math.min(bbox[1], p.y);
+-            bbox[2] = Math.max(bbox[2], p.x);
+-            bbox[3] = Math.max(bbox[3], p.y);
+-        }
+-
+-        this.grid.insert(key, bbox[0], bbox[1], bbox[2], bbox[3]);
++function createTexture2D(gl) {
++  if(arguments.length <= 1) {
++    throw new Error('gl-texture2d: Missing arguments for texture2d constructor')
++  }
++  if(!linearTypes) {
++    lazyInitLinearTypes(gl)
++  }
++  if(typeof arguments[1] === 'number') {
++    return createTextureShape(gl, arguments[1], arguments[2], arguments[3]||gl.RGBA, arguments[4]||gl.UNSIGNED_BYTE)
++  }
++  if(Array.isArray(arguments[1])) {
++    return createTextureShape(gl, arguments[1][0]|0, arguments[1][1]|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
++  }
++  if(typeof arguments[1] === 'object') {
++    var obj = arguments[1]
++    if(obj instanceof HTMLCanvasElement ||
++       obj instanceof HTMLImageElement ||
++       obj instanceof HTMLVideoElement ||
++       obj instanceof ImageData) {
++      return createTextureDOM(gl, obj, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
++    } else if(obj.shape && obj.data && obj.stride) {
++      return createTextureArray(gl, obj)
+     }
+-};
+-
+-FeatureIndex.prototype.setCollisionTile = function(collisionTile) {
+-    this.collisionTile = collisionTile;
+-};
+-
+-FeatureIndex.prototype.serialize = function() {
+-    var data = {
+-        coord: this.coord,
+-        overscaling: this.overscaling,
+-        grid: this.grid.toArrayBuffer(),
+-        featureIndexArray: this.featureIndexArray.serialize(),
+-        bucketLayerIDs: this.bucketLayerIDs
+-    };
+-    return {
+-        data: data,
+-        transferables: [data.grid, data.featureIndexArray.arrayBuffer]
+-    };
+-};
+-
+-function translateDistance(translate) {
+-    return Math.sqrt(translate[0] * translate[0] + translate[1] * translate[1]);
++  }
++  throw new Error('gl-texture2d: Invalid arguments for texture2d constructor')
+ }
+ 
+-// Finds features in this tile at a particular position.
+-FeatureIndex.prototype.query = function(args, styleLayers) {
+-    if (!this.vtLayers) {
+-        this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
+-        this.sourceLayerCoder = new DictionaryCoder(this.vtLayers ? Object.keys(this.vtLayers).sort() : ['_geojsonTileLayer']);
+-    }
+-
+-    var result = {};
+-
+-    var params = args.params || {},
+-        pixelsToTileUnits = EXTENT / args.tileSize / args.scale,
+-        filter = featureFilter(params.filter);
+-
+-    // Features are indexed their original geometries. The rendered geometries may
+-    // be buffered, translated or offset. Figure out how much the search radius needs to be
+-    // expanded by to include these features.
+-    var additionalRadius = 0;
+-    for (var id in styleLayers) {
+-        var styleLayer = styleLayers[id];
+-        var paint = styleLayer.paint;
++},{"ndarray":385,"ndarray-ops":379,"typedarray-pool":449}],203:[function(require,module,exports){
++"use strict"
+ 
+-        var styleLayerDistance = 0;
+-        if (styleLayer.type === 'line') {
+-            styleLayerDistance = getLineWidth(paint) / 2 + Math.abs(paint['line-offset']) + translateDistance(paint['line-translate']);
+-        } else if (styleLayer.type === 'fill') {
+-            styleLayerDistance = translateDistance(paint['fill-translate']);
+-        } else if (styleLayer.type === 'circle') {
+-            styleLayerDistance = paint['circle-radius'] + translateDistance(paint['circle-translate']);
+-        }
+-        additionalRadius = Math.max(additionalRadius, styleLayerDistance * pixelsToTileUnits);
++function doBind(gl, elements, attributes) {
++  if(elements) {
++    elements.bind()
++  } else {
++    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null)
++  }
++  var nattribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS)|0
++  if(attributes) {
++    if(attributes.length > nattribs) {
++      throw new Error("gl-vao: Too many vertex attributes")
+     }
+-
+-    var queryGeometry = args.queryGeometry.map(function(q) {
+-        return q.map(function(p) {
+-            return new Point(p.x, p.y);
+-        });
+-    });
+-
+-    var minX = Infinity;
+-    var minY = Infinity;
+-    var maxX = -Infinity;
+-    var maxY = -Infinity;
+-    for (var i = 0; i < queryGeometry.length; i++) {
+-        var ring = queryGeometry[i];
+-        for (var k = 0; k < ring.length; k++) {
+-            var p = ring[k];
+-            minX = Math.min(minX, p.x);
+-            minY = Math.min(minY, p.y);
+-            maxX = Math.max(maxX, p.x);
+-            maxY = Math.max(maxY, p.y);
++    for(var i=0; i<attributes.length; ++i) {
++      var attrib = attributes[i]
++      if(attrib.buffer) {
++        var buffer = attrib.buffer
++        var size = attrib.size || 4
++        var type = attrib.type || gl.FLOAT
++        var normalized = !!attrib.normalized
++        var stride = attrib.stride || 0
++        var offset = attrib.offset || 0
++        buffer.bind()
++        gl.enableVertexAttribArray(i)
++        gl.vertexAttribPointer(i, size, type, normalized, stride, offset)
++      } else {
++        if(typeof attrib === "number") {
++          gl.vertexAttrib1f(i, attrib)
++        } else if(attrib.length === 1) {
++          gl.vertexAttrib1f(i, attrib[0])
++        } else if(attrib.length === 2) {
++          gl.vertexAttrib2f(i, attrib[0], attrib[1])
++        } else if(attrib.length === 3) {
++          gl.vertexAttrib3f(i, attrib[0], attrib[1], attrib[2])
++        } else if(attrib.length === 4) {
++          gl.vertexAttrib4f(i, attrib[0], attrib[1], attrib[2], attrib[3])
++        } else {
++          throw new Error("gl-vao: Invalid vertex attribute")
+         }
++        gl.disableVertexAttribArray(i)
++      }
+     }
+-
+-    var matching = this.grid.query(minX - additionalRadius, minY - additionalRadius, maxX + additionalRadius, maxY + additionalRadius);
+-    matching.sort(topDownFeatureComparator);
+-    this.filterMatching(result, matching, this.featureIndexArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+-
+-    var matchingSymbols = this.collisionTile.queryRenderedSymbols(minX, minY, maxX, maxY, args.scale);
+-    matchingSymbols.sort();
+-    this.filterMatching(result, matchingSymbols, this.collisionTile.collisionBoxArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+-
+-    return result;
+-};
+-
+-function topDownFeatureComparator(a, b) {
+-    return b - a;
+-}
+-
+-function getLineWidth(paint) {
+-    if (paint['line-gap-width'] > 0) {
+-        return paint['line-gap-width'] + 2 * paint['line-width'];
+-    } else {
+-        return paint['line-width'];
++    for(; i<nattribs; ++i) {
++      gl.disableVertexAttribArray(i)
++    }
++  } else {
++    gl.bindBuffer(gl.ARRAY_BUFFER, null)
++    for(var i=0; i<nattribs; ++i) {
++      gl.disableVertexAttribArray(i)
+     }
++  }
+ }
+ 
+-FeatureIndex.prototype.filterMatching = function(result, matching, array, queryGeometry, filter, filterLayerIDs, styleLayers, bearing, pixelsToTileUnits) {
+-    var previousIndex;
+-    for (var k = 0; k < matching.length; k++) {
+-        var index = matching[k];
+-
+-        // don't check the same feature more than once
+-        if (index === previousIndex) continue;
+-        previousIndex = index;
+-
+-        var match = array.get(index);
+-
+-        var layerIDs = this.bucketLayerIDs[match.bucketIndex];
+-        if (filterLayerIDs && !arraysIntersect(filterLayerIDs, layerIDs)) continue;
+-
+-        var sourceLayerName = this.sourceLayerCoder.decode(match.sourceLayerIndex);
+-        var sourceLayer = this.vtLayers[sourceLayerName];
+-        var feature = sourceLayer.feature(match.featureIndex);
+-
+-        if (!filter(feature)) continue;
+-
+-        var geometry = null;
+-
+-        for (var l = 0; l < layerIDs.length; l++) {
+-            var layerID = layerIDs[l];
+-
+-            if (filterLayerIDs && filterLayerIDs.indexOf(layerID) < 0) {
+-                continue;
+-            }
+-
+-            var styleLayer = styleLayers[layerID];
+-            if (!styleLayer) continue;
+-
+-            var translatedPolygon;
+-            if (styleLayer.type !== 'symbol') {
+-                // all symbols already match the style
++module.exports = doBind
++},{}],204:[function(require,module,exports){
++"use strict"
+ 
+-                if (!geometry) geometry = loadGeometry(feature);
++var bindAttribs = require("./do-bind.js")
+ 
+-                var paint = styleLayer.paint;
++function VAOEmulated(gl) {
++  this.gl = gl
++  this._elements = null
++  this._attributes = null
++  this._elementsType = gl.UNSIGNED_SHORT
++}
+ 
+-                if (styleLayer.type === 'line') {
+-                    translatedPolygon = translate(queryGeometry,
+-                            paint['line-translate'], paint['line-translate-anchor'],
+-                            bearing, pixelsToTileUnits);
+-                    var halfWidth = getLineWidth(paint) / 2 * pixelsToTileUnits;
+-                    if (paint['line-offset']) {
+-                        geometry = offsetLine(geometry, paint['line-offset'] * pixelsToTileUnits);
+-                    }
+-                    if (!multiPolygonIntersectsBufferedMultiLine(translatedPolygon, geometry, halfWidth)) continue;
++VAOEmulated.prototype.bind = function() {
++  bindAttribs(this.gl, this._elements, this._attributes)
++}
+ 
+-                } else if (styleLayer.type === 'fill') {
+-                    translatedPolygon = translate(queryGeometry,
+-                            paint['fill-translate'], paint['fill-translate-anchor'],
+-                            bearing, pixelsToTileUnits);
+-                    if (!multiPolygonIntersectsMultiPolygon(translatedPolygon, geometry)) continue;
++VAOEmulated.prototype.update = function(attributes, elements, elementsType) {
++  this._elements = elements
++  this._attributes = attributes
++  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
++}
+ 
+-                } else if (styleLayer.type === 'circle') {
+-                    translatedPolygon = translate(queryGeometry,
+-                            paint['circle-translate'], paint['circle-translate-anchor'],
+-                            bearing, pixelsToTileUnits);
+-                    var circleRadius = paint['circle-radius'] * pixelsToTileUnits;
+-                    if (!multiPolygonIntersectsBufferedMultiPoint(translatedPolygon, geometry, circleRadius)) continue;
+-                }
+-            }
++VAOEmulated.prototype.dispose = function() { }
++VAOEmulated.prototype.unbind = function() { }
+ 
+-            var geojsonFeature = new GeoJSONFeature(feature, this.z, this.x, this.y);
+-            geojsonFeature.layer = styleLayer.serialize({
+-                includeRefProperties: true
+-            });
+-            var layerResult = result[layerID];
+-            if (layerResult === undefined) {
+-                layerResult = result[layerID] = [];
+-            }
+-            layerResult.push(geojsonFeature);
+-        }
+-    }
+-};
++VAOEmulated.prototype.draw = function(mode, count, offset) {
++  offset = offset || 0
++  var gl = this.gl
++  if(this._elements) {
++    gl.drawElements(mode, count, this._elementsType, offset)
++  } else {
++    gl.drawArrays(mode, offset, count)
++  }
++}
+ 
+-function translate(queryGeometry, translate, translateAnchor, bearing, pixelsToTileUnits) {
+-    if (!translate[0] && !translate[1]) {
+-        return queryGeometry;
+-    }
++function createVAOEmulated(gl) {
++  return new VAOEmulated(gl)
++}
+ 
+-    translate = Point.convert(translate);
++module.exports = createVAOEmulated
++},{"./do-bind.js":203}],205:[function(require,module,exports){
++"use strict"
+ 
+-    if (translateAnchor === "viewport") {
+-        translate._rotate(-bearing);
+-    }
++var bindAttribs = require("./do-bind.js")
+ 
+-    var translated = [];
+-    for (var i = 0; i < queryGeometry.length; i++) {
+-        var ring = queryGeometry[i];
+-        var translatedRing = [];
+-        for (var k = 0; k < ring.length; k++) {
+-            translatedRing.push(ring[k].sub(translate._mult(pixelsToTileUnits)));
+-        }
+-        translated.push(translatedRing);
+-    }
+-    return translated;
++function VertexAttribute(location, dimension, a, b, c, d) {
++  this.location = location
++  this.dimension = dimension
++  this.a = a
++  this.b = b
++  this.c = c
++  this.d = d
+ }
+ 
+-function offsetLine(rings, offset) {
+-    var newRings = [];
+-    var zero = new Point(0, 0);
+-    for (var k = 0; k < rings.length; k++) {
+-        var ring = rings[k];
+-        var newRing = [];
+-        for (var i = 0; i < ring.length; i++) {
+-            var a = ring[i - 1];
+-            var b = ring[i];
+-            var c = ring[i + 1];
+-            var aToB = i === 0 ? zero : b.sub(a)._unit()._perp();
+-            var bToC = i === ring.length - 1 ? zero : c.sub(b)._unit()._perp();
+-            var extrude = aToB._add(bToC)._unit();
+-
+-            var cosHalfAngle = extrude.x * bToC.x + extrude.y * bToC.y;
+-            extrude._mult(1 / cosHalfAngle);
++VertexAttribute.prototype.bind = function(gl) {
++  switch(this.dimension) {
++    case 1:
++      gl.vertexAttrib1f(this.location, this.a)
++    break
++    case 2:
++      gl.vertexAttrib2f(this.location, this.a, this.b)
++    break
++    case 3:
++      gl.vertexAttrib3f(this.location, this.a, this.b, this.c)
++    break
++    case 4:
++      gl.vertexAttrib4f(this.location, this.a, this.b, this.c, this.d)
++    break
++  }
++}
+ 
+-            newRing.push(extrude._mult(offset)._add(b));
+-        }
+-        newRings.push(newRing);
+-    }
+-    return newRings;
++function VAONative(gl, ext, handle) {
++  this.gl = gl
++  this._ext = ext
++  this.handle = handle
++  this._attribs = []
++  this._useElements = false
++  this._elementsType = gl.UNSIGNED_SHORT
+ }
+ 
+-},{"../util/dictionary_coder":340,"../util/intersection_tests":344,"../util/struct_array":347,"../util/util":349,"../util/vectortile_to_geojson":350,"./bucket":247,"./load_geometry":254,"feature-filter":352,"grid-index":373,"pbf":402,"point-geometry":404,"vector-tile":413}],254:[function(require,module,exports){
+-'use strict';
++VAONative.prototype.bind = function() {
++  this._ext.bindVertexArrayOES(this.handle)
++  for(var i=0; i<this._attribs.length; ++i) {
++    this._attribs[i].bind(this.gl)
++  }
++}
+ 
+-var EXTENT = require('./bucket').EXTENT;
+-var EXTENT_MIN = EXTENT * -2;
+-var EXTENT_MAX = (EXTENT * 2) - 1;
++VAONative.prototype.unbind = function() {
++  this._ext.bindVertexArrayOES(null)
++}
+ 
+-// only log a geometry warning once per context
+-var warned = false;
++VAONative.prototype.dispose = function() {
++  this._ext.deleteVertexArrayOES(this.handle)
++}
+ 
+-/**
+- * Loads a geometry from a VectorTileFeature and scales it to the common extent
+- * used internally.
+- * @private
+- */
+-module.exports = function loadGeometry(feature) {
+-    var scale = EXTENT / feature.extent;
+-    var geometry = feature.loadGeometry();
+-    for (var r = 0; r < geometry.length; r++) {
+-        var ring = geometry[r];
+-        for (var p = 0; p < ring.length; p++) {
+-            var point = ring[p];
+-            // round here because mapbox-gl-native uses integers to represent
+-            // points and we need to do the same to avoid renering differences.
+-            point.x = Math.round(point.x * scale);
+-            point.y = Math.round(point.y * scale);
+-            if (warned === false && (
+-                point.x < EXTENT_MIN ||
+-                point.x > EXTENT_MAX ||
+-                point.y < EXTENT_MIN ||
+-                point.y > EXTENT_MAX)) {
+-                console.warn('Geometry exceeds allowed extent, reduce your vector tile buffer size');
+-                warned = true;
+-            }
+-        }
++VAONative.prototype.update = function(attributes, elements, elementsType) {
++  this.bind()
++  bindAttribs(this.gl, elements, attributes)
++  this.unbind()
++  this._attribs.length = 0
++  if(attributes)
++  for(var i=0; i<attributes.length; ++i) {
++    var a = attributes[i]
++    if(typeof a === "number") {
++      this._attribs.push(new VertexAttribute(i, 1, a))
++    } else if(Array.isArray(a)) {
++      this._attribs.push(new VertexAttribute(i, a.length, a[0], a[1], a[2], a[3]))
+     }
+-    return geometry;
+-};
+-
+-},{"./bucket":247}],255:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = Coordinate;
+-
+-/**
+- * A coordinate is a column, row, zoom combination, often used
+- * as the data component of a tile.
+- *
+- * @param {number} column
+- * @param {number} row
+- * @param {number} zoom
+- * @private
+- */
+-function Coordinate(column, row, zoom) {
+-    this.column = column;
+-    this.row = row;
+-    this.zoom = zoom;
++  }
++  this._useElements = !!elements
++  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
+ }
+ 
+-Coordinate.prototype = {
+-
+-    /**
+-     * Create a clone of this coordinate that can be mutated without
+-     * changing the original coordinate
+-     *
+-     * @returns {Coordinate} clone
+-     * @private
+-     * var coord = new Coordinate(0, 0, 0);
+-     * var c2 = coord.clone();
+-     * // since coord is cloned, modifying a property of c2 does
+-     * // not modify it.
+-     * c2.zoom = 2;
+-     */
+-    clone: function() {
+-        return new Coordinate(this.column, this.row, this.zoom);
+-    },
+-
+-    /**
+-     * Zoom this coordinate to a given zoom level. This returns a new
+-     * coordinate object, not mutating the old one.
+-     *
+-     * @param {number} zoom
+-     * @returns {Coordinate} zoomed coordinate
+-     * @private
+-     * @example
+-     * var coord = new Coordinate(0, 0, 0);
+-     * var c2 = coord.zoomTo(1);
+-     * c2 // equals new Coordinate(0, 0, 1);
+-     */
+-    zoomTo: function(zoom) { return this.clone()._zoomTo(zoom); },
++VAONative.prototype.draw = function(mode, count, offset) {
++  offset = offset || 0
++  var gl = this.gl
++  if(this._useElements) {
++    gl.drawElements(mode, count, this._elementsType, offset)
++  } else {
++    gl.drawArrays(mode, offset, count)
++  }
++}
+ 
+-    /**
+-     * Subtract the column and row values of this coordinate from those
+-     * of another coordinate. The other coordinat will be zoomed to the
+-     * same level as `this` before the subtraction occurs
+-     *
+-     * @param {Coordinate} c other coordinate
+-     * @returns {Coordinate} result
+-     * @private
+-     */
+-    sub: function(c) { return this.clone()._sub(c); },
++function createVAONative(gl, ext) {
++  return new VAONative(gl, ext, ext.createVertexArrayOES())
++}
+ 
+-    _zoomTo: function(zoom) {
+-        var scale = Math.pow(2, zoom - this.zoom);
+-        this.column *= scale;
+-        this.row *= scale;
+-        this.zoom = zoom;
+-        return this;
+-    },
++module.exports = createVAONative
++},{"./do-bind.js":203}],206:[function(require,module,exports){
++"use strict"
+ 
+-    _sub: function(c) {
+-        c = c.zoomTo(this.zoom);
+-        this.column -= c.column;
+-        this.row -= c.row;
+-        return this;
+-    }
+-};
++var createVAONative = require("./lib/vao-native.js")
++var createVAOEmulated = require("./lib/vao-emulated.js")
+ 
+-},{}],256:[function(require,module,exports){
+-'use strict';
++function ExtensionShim (gl) {
++  this.bindVertexArrayOES = gl.bindVertexArray.bind(gl)
++  this.createVertexArrayOES = gl.createVertexArray.bind(gl)
++  this.deleteVertexArrayOES = gl.deleteVertexArray.bind(gl)
++}
+ 
+-module.exports = LngLat;
++function createVAO(gl, attributes, elements, elementsType) {
++  var ext = gl.createVertexArray
++    ? new ExtensionShim(gl)
++    : gl.getExtension('OES_vertex_array_object')
++  var vao
+ 
+-var wrap = require('../util/util').wrap;
++  if(ext) {
++    vao = createVAONative(gl, ext)
++  } else {
++    vao = createVAOEmulated(gl)
++  }
++  vao.update(attributes, elements, elementsType)
++  return vao
++}
++
++module.exports = createVAO
++
++},{"./lib/vao-emulated.js":204,"./lib/vao-native.js":205}],207:[function(require,module,exports){
++module.exports = cross;
+ 
+ /**
+- * Create a longitude, latitude object from a given longitude and latitude pair in degrees.
+- * Mapbox GL uses Longitude, Latitude coordinate order to match GeoJSON.
+- *
+- * Note that any Mapbox GL method that accepts a `LngLat` object can also accept an
+- * `Array` and will perform an implicit conversion.  The following lines are equivalent:
+- ```
+- map.setCenter([-73.9749, 40.7736]);
+- map.setCenter( new mapboxgl.LngLat(-73.9749, 40.7736) );
+- ```
++ * Computes the cross product of two vec3's
+  *
+- * @class LngLat
+- * @classdesc A representation of a longitude, latitude point, in degrees.
+- * @param {number} lng longitude
+- * @param {number} lat latitude
+- * @example
+- * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
+  */
+-function LngLat(lng, lat) {
+-    if (isNaN(lng) || isNaN(lat)) {
+-        throw new Error('Invalid LngLat object: (' + lng + ', ' + lat + ')');
+-    }
+-    this.lng = +lng;
+-    this.lat = +lat;
+-    if (this.lat > 90 || this.lat < -90) {
+-        throw new Error('Invalid LngLat latitude value: must be between -90 and 90');
+-    }
++function cross(out, a, b) {
++    var ax = a[0], ay = a[1], az = a[2],
++        bx = b[0], by = b[1], bz = b[2]
++
++    out[0] = ay * bz - az * by
++    out[1] = az * bx - ax * bz
++    out[2] = ax * by - ay * bx
++    return out
+ }
++},{}],208:[function(require,module,exports){
++module.exports = dot;
+ 
+ /**
+- * Return a new `LngLat` object whose longitude is wrapped to the range (-180, 180).
++ * Calculates the dot product of two vec3's
+  *
+- * @returns {LngLat} wrapped LngLat object
+- * @example
+- * var ll = new mapboxgl.LngLat(286.0251, 40.7736);
+- * var wrapped = ll.wrap();
+- * wrapped.lng; // = -73.9749
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} dot product of a and b
+  */
+-LngLat.prototype.wrap = function () {
+-    return new LngLat(wrap(this.lng, -180, 180), this.lat);
+-};
++function dot(a, b) {
++    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]
++}
++},{}],209:[function(require,module,exports){
++module.exports = length;
+ 
+ /**
+- * Return a `LngLat` as an array
++ * Calculates the length of a vec3
+  *
+- * @returns {array} [lng, lat]
+- * @example
+- * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
+- * ll.toArray(); // = [-73.9749, 40.7736]
++ * @param {vec3} a vector to calculate length of
++ * @returns {Number} length of a
+  */
+-LngLat.prototype.toArray = function () {
+-    return [this.lng, this.lat];
+-};
++function length(a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2]
++    return Math.sqrt(x*x + y*y + z*z)
++}
++},{}],210:[function(require,module,exports){
++module.exports = lerp;
+ 
+ /**
+- * Return a `LngLat` as a string
++ * Performs a linear interpolation between two vec3's
+  *
+- * @returns {string} "LngLat(lng, lat)"
+- * @example
+- * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
+- * ll.toString(); // = "LngLat(-73.9749, 40.7736)"
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
+  */
+-LngLat.prototype.toString = function () {
+-    return 'LngLat(' + this.lng + ', ' + this.lat + ')';
+-};
++function lerp(out, a, b, t) {
++    var ax = a[0],
++        ay = a[1],
++        az = a[2]
++    out[0] = ax + t * (b[0] - ax)
++    out[1] = ay + t * (b[1] - ay)
++    out[2] = az + t * (b[2] - az)
++    return out
++}
++},{}],211:[function(require,module,exports){
++module.exports = normalize;
+ 
+ /**
+- * Convert an array to a `LngLat` object, or return an existing `LngLat` object
+- * unchanged.
++ * Normalize a vec3
+  *
+- * @param {Array<number>|LngLat} input `input` to convert
+- * @returns {LngLat} LngLat object or original input
+- * @example
+- * var arr = [-73.9749, 40.7736];
+- * var ll = mapboxgl.LngLat.convert(arr);
+- * ll;   // = LngLat {lng: -73.9749, lat: 40.7736}
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to normalize
++ * @returns {vec3} out
+  */
+-LngLat.convert = function (input) {
+-    if (input instanceof LngLat) {
+-        return input;
+-    }
+-    if (Array.isArray(input)) {
+-        return new LngLat(input[0], input[1]);
++function normalize(out, a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2]
++    var len = x*x + y*y + z*z
++    if (len > 0) {
++        //TODO: evaluate use of glm_invsqrt here?
++        len = 1 / Math.sqrt(len)
++        out[0] = a[0] * len
++        out[1] = a[1] * len
++        out[2] = a[2] * len
+     }
+-    return input;
+-};
+-
+-},{"../util/util":349}],257:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = LngLatBounds;
+-
+-var LngLat = require('./lng_lat');
++    return out
++}
++},{}],212:[function(require,module,exports){
++module.exports = transformMat4
+ 
+ /**
+- * Creates a bounding box from the given pair of points. If parameteres are omitted, a `null` bounding box is created.
++ * Transforms the vec4 with a mat4.
+  *
+- * @class LngLatBounds
+- * @classdesc A representation of rectangular box on the earth, defined by its southwest and northeast points in longitude and latitude.
+- * @param {LngLat} sw southwest
+- * @param {LngLat} ne northeast
+- * @example
+- * var sw = new mapboxgl.LngLat(-73.9876, 40.7661);
+- * var ne = new mapboxgl.LngLat(-73.9397, 40.8002);
+- * var llb = new mapboxgl.LngLatBounds(sw, ne);
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec4} out
+  */
+-function LngLatBounds(sw, ne) {
+-    if (!sw) {
+-        return;
+-    } else if (ne) {
+-        this.extend(sw).extend(ne);
+-    } else if (sw.length === 4) {
+-        this.extend([sw[0], sw[1]]).extend([sw[2], sw[3]]);
+-    } else {
+-        this.extend(sw[0]).extend(sw[1]);
+-    }
++function transformMat4 (out, a, m) {
++  var x = a[0], y = a[1], z = a[2], w = a[3]
++  out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w
++  out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w
++  out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w
++  out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w
++  return out
+ }
+ 
+-LngLatBounds.prototype = {
++},{}],213:[function(require,module,exports){
++module.exports = decodeFloat
+ 
+-    /**
+-     * Extend the bounds to include a given LngLat or LngLatBounds.
+-     *
+-     * @param {LngLat|LngLatBounds} obj object to extend to
+-     * @returns {LngLatBounds} `this`
+-     */
+-    extend: function(obj) {
+-        var sw = this._sw,
+-            ne = this._ne,
+-            sw2, ne2;
++var UINT8_VIEW = new Uint8Array(4)
++var FLOAT_VIEW = new Float32Array(UINT8_VIEW.buffer)
+ 
+-        if (obj instanceof LngLat) {
+-            sw2 = obj;
+-            ne2 = obj;
++function decodeFloat(x, y, z, w) {
++  UINT8_VIEW[0] = w
++  UINT8_VIEW[1] = z
++  UINT8_VIEW[2] = y
++  UINT8_VIEW[3] = x
++  return FLOAT_VIEW[0]
++}
+ 
+-        } else if (obj instanceof LngLatBounds) {
+-            sw2 = obj._sw;
+-            ne2 = obj._ne;
++},{}],214:[function(require,module,exports){
++var tokenize = require('glsl-tokenizer')
++var atob     = require('atob-lite')
+ 
+-            if (!sw2 || !ne2) return this;
++module.exports = getName
+ 
+-        } else {
+-            return obj ? this.extend(LngLat.convert(obj) || LngLatBounds.convert(obj)) : this;
+-        }
++function getName(src) {
++  var tokens = Array.isArray(src)
++    ? src
++    : tokenize(src)
+ 
+-        if (!sw && !ne) {
+-            this._sw = new LngLat(sw2.lng, sw2.lat);
+-            this._ne = new LngLat(ne2.lng, ne2.lat);
++  for (var i = 0; i < tokens.length; i++) {
++    var token = tokens[i]
++    if (token.type !== 'preprocessor') continue
++    var match = token.data.match(/\#define\s+SHADER_NAME(_B64)?\s+(.+)$/)
++    if (!match) continue
++    if (!match[2]) continue
+ 
+-        } else {
+-            sw.lng = Math.min(sw2.lng, sw.lng);
+-            sw.lat = Math.min(sw2.lat, sw.lat);
+-            ne.lng = Math.max(ne2.lng, ne.lng);
+-            ne.lat = Math.max(ne2.lat, ne.lat);
++    var b64  = match[1]
++    var name = match[2]
++
++    return (b64 ? atob(name) : name).trim()
++  }
++}
++
++},{"atob-lite":30,"glsl-tokenizer":221}],215:[function(require,module,exports){
++module.exports = tokenize
++
++var literals100 = require('./lib/literals')
++  , operators = require('./lib/operators')
++  , builtins100 = require('./lib/builtins')
++  , literals300es = require('./lib/literals-300es')
++  , builtins300es = require('./lib/builtins-300es')
++
++var NORMAL = 999          // <-- never emitted
++  , TOKEN = 9999          // <-- never emitted
++  , BLOCK_COMMENT = 0
++  , LINE_COMMENT = 1
++  , PREPROCESSOR = 2
++  , OPERATOR = 3
++  , INTEGER = 4
++  , FLOAT = 5
++  , IDENT = 6
++  , BUILTIN = 7
++  , KEYWORD = 8
++  , WHITESPACE = 9
++  , EOF = 10
++  , HEX = 11
++
++var map = [
++    'block-comment'
++  , 'line-comment'
++  , 'preprocessor'
++  , 'operator'
++  , 'integer'
++  , 'float'
++  , 'ident'
++  , 'builtin'
++  , 'keyword'
++  , 'whitespace'
++  , 'eof'
++  , 'integer'
++]
++
++function tokenize(opt) {
++  var i = 0
++    , total = 0
++    , mode = NORMAL
++    , c
++    , last
++    , content = []
++    , tokens = []
++    , token_idx = 0
++    , token_offs = 0
++    , line = 1
++    , col = 0
++    , start = 0
++    , isnum = false
++    , isoperator = false
++    , input = ''
++    , len
++
++  opt = opt || {}
++  var allBuiltins = builtins100
++  var allLiterals = literals100
++  if (opt.version === '300 es') {
++    allBuiltins = builtins300es
++    allLiterals = literals300es
++  }
++
++  return function(data) {
++    tokens = []
++    if (data !== null) return write(data.replace ? data.replace(/\r\n/g, '\n') : data)
++    return end()
++  }
++
++  function token(data) {
++    if (data.length) {
++      tokens.push({
++        type: map[mode]
++      , data: data
++      , position: start
++      , line: line
++      , column: col
++      })
++    }
++  }
++
++  function write(chunk) {
++    i = 0
++    input += chunk
++    len = input.length
++
++    var last
++
++    while(c = input[i], i < len) {
++      last = i
++
++      switch(mode) {
++        case BLOCK_COMMENT: i = block_comment(); break
++        case LINE_COMMENT: i = line_comment(); break
++        case PREPROCESSOR: i = preprocessor(); break
++        case OPERATOR: i = operator(); break
++        case INTEGER: i = integer(); break
++        case HEX: i = hex(); break
++        case FLOAT: i = decimal(); break
++        case TOKEN: i = readtoken(); break
++        case WHITESPACE: i = whitespace(); break
++        case NORMAL: i = normal(); break
++      }
++
++      if(last !== i) {
++        switch(input[last]) {
++          case '\n': col = 0; ++line; break
++          default: ++col; break
+         }
++      }
++    }
+ 
+-        return this;
+-    },
++    total += i
++    input = input.slice(i)
++    return tokens
++  }
+ 
+-    /**
+-     * Get the point equidistant from this box's corners
+-     * @returns {LngLat} centerpoint
+-     * @example
+-     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
+-     * llb.getCenter(); // = LngLat {lng: -73.96365, lat: 40.78315}
+-     */
+-    getCenter: function() {
+-        return new LngLat((this._sw.lng + this._ne.lng) / 2, (this._sw.lat + this._ne.lat) / 2);
+-    },
++  function end(chunk) {
++    if(content.length) {
++      token(content.join(''))
++    }
+ 
+-    /**
+-     * Get southwest corner
+-     * @returns {LngLat} southwest
+-     */
+-    getSouthWest: function() { return this._sw; },
++    mode = EOF
++    token('(eof)')
++    return tokens
++  }
+ 
+-    /**
+-     * Get northeast corner
+-     * @returns {LngLat} northeast
+-     */
+-    getNorthEast: function() { return this._ne; },
++  function normal() {
++    content = content.length ? [] : content
+ 
+-    /**
+-     * Get northwest corner
+-     * @returns {LngLat} northwest
+-     */
+-    getNorthWest: function() { return new LngLat(this.getWest(), this.getNorth()); },
++    if(last === '/' && c === '*') {
++      start = total + i - 1
++      mode = BLOCK_COMMENT
++      last = c
++      return i + 1
++    }
+ 
+-    /**
+-     * Get southeast corner
+-     * @returns {LngLat} southeast
+-     */
+-    getSouthEast: function() { return new LngLat(this.getEast(), this.getSouth()); },
++    if(last === '/' && c === '/') {
++      start = total + i - 1
++      mode = LINE_COMMENT
++      last = c
++      return i + 1
++    }
+ 
+-    /**
+-     * Get west edge longitude
+-     * @returns {number} west
+-     */
+-    getWest:  function() { return this._sw.lng; },
++    if(c === '#') {
++      mode = PREPROCESSOR
++      start = total + i
++      return i
++    }
+ 
+-    /**
+-     * Get south edge latitude
+-     * @returns {number} south
+-     */
+-    getSouth: function() { return this._sw.lat; },
++    if(/\s/.test(c)) {
++      mode = WHITESPACE
++      start = total + i
++      return i
++    }
+ 
+-    /**
+-     * Get east edge longitude
+-     * @returns {number} east
+-     */
+-    getEast:  function() { return this._ne.lng; },
++    isnum = /\d/.test(c)
++    isoperator = /[^\w_]/.test(c)
+ 
+-    /**
+-     * Get north edge latitude
+-     * @returns {number} north
+-     */
+-    getNorth: function() { return this._ne.lat; },
++    start = total + i
++    mode = isnum ? INTEGER : isoperator ? OPERATOR : TOKEN
++    return i
++  }
++
++  function whitespace() {
++    if(/[^\s]/g.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
++    content.push(c)
++    last = c
++    return i + 1
++  }
++
++  function preprocessor() {
++    if((c === '\r' || c === '\n') && last !== '\\') {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
++    content.push(c)
++    last = c
++    return i + 1
++  }
++
++  function line_comment() {
++    return preprocessor()
++  }
++
++  function block_comment() {
++    if(c === '/' && last === '*') {
++      content.push(c)
++      token(content.join(''))
++      mode = NORMAL
++      return i + 1
++    }
++
++    content.push(c)
++    last = c
++    return i + 1
++  }
++
++  function operator() {
++    if(last === '.' && /\d/.test(c)) {
++      mode = FLOAT
++      return i
++    }
+ 
+-    /**
+-     * Return a `LngLatBounds` as an array
+-     *
+-     * @returns {array} [lng, lat]
+-     * @example
+-     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
+-     * llb.toArray(); // = [[-73.9876, 40.7661], [-73.9397, 40.8002]]
+-     */
+-    toArray: function () {
+-        return [this._sw.toArray(), this._ne.toArray()];
+-    },
++    if(last === '/' && c === '*') {
++      mode = BLOCK_COMMENT
++      return i
++    }
+ 
+-    /**
+-     * Return a `LngLatBounds` as a string
+-     *
+-     * @returns {string} "LngLatBounds(LngLat(lng, lat), LngLat(lng, lat))"
+-     * @example
+-     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
+-     * llb.toString(); // = "LngLatBounds(LngLat(-73.9876, 40.7661), LngLat(-73.9397, 40.8002))"
+-     */
+-    toString: function () {
+-        return 'LngLatBounds(' + this._sw.toString() + ', ' + this._ne.toString() + ')';
++    if(last === '/' && c === '/') {
++      mode = LINE_COMMENT
++      return i
+     }
+-};
+ 
+-/**
+- * Convert an array to a `LngLatBounds` object, or return an existing
+- * `LngLatBounds` object unchanged.
+- *
+- * Calls `LngLat#convert` internally to convert arrays as `LngLat` values.
+- *
+- * @param {LngLatBounds|Array<number>|Array<Array<number>>} input input to convert to a LngLatBounds
+- * @returns {LngLatBounds} LngLatBounds object or original input
+- * @example
+- * var arr = [[-73.9876, 40.7661], [-73.9397, 40.8002]];
+- * var llb = mapboxgl.LngLatBounds.convert(arr);
+- * llb;   // = LngLatBounds {_sw: LngLat {lng: -73.9876, lat: 40.7661}, _ne: LngLat {lng: -73.9397, lat: 40.8002}}
+- */
+-LngLatBounds.convert = function (input) {
+-    if (!input || input instanceof LngLatBounds) return input;
+-    return new LngLatBounds(input);
+-};
++    if(c === '.' && content.length) {
++      while(determine_operator(content));
+ 
+-},{"./lng_lat":256}],258:[function(require,module,exports){
+-'use strict';
++      mode = FLOAT
++      return i
++    }
+ 
+-var LngLat = require('./lng_lat'),
+-    Point = require('point-geometry'),
+-    Coordinate = require('./coordinate'),
+-    wrap = require('../util/util').wrap,
+-    interp = require('../util/interpolate'),
+-    TileCoord = require('../source/tile_coord'),
+-    EXTENT = require('../data/bucket').EXTENT,
+-    glmatrix = require('gl-matrix');
++    if(c === ';' || c === ')' || c === '(') {
++      if(content.length) while(determine_operator(content));
++      token(c)
++      mode = NORMAL
++      return i + 1
++    }
+ 
+-var vec4 = glmatrix.vec4,
+-    mat4 = glmatrix.mat4,
+-    mat2 = glmatrix.mat2;
++    var is_composite_operator = content.length === 2 && c !== '='
++    if(/[\w_\d\s]/.test(c) || is_composite_operator) {
++      while(determine_operator(content));
++      mode = NORMAL
++      return i
++    }
+ 
+-module.exports = Transform;
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-/**
+- * A single transform, generally used for a single tile to be
+- * scaled, rotated, and zoomed.
+- *
+- * @param {number} minZoom
+- * @param {number} maxZoom
+- * @private
+- */
+-function Transform(minZoom, maxZoom) {
+-    this.tileSize = 512; // constant
++  function determine_operator(buf) {
++    var j = 0
++      , idx
++      , res
+ 
+-    this._minZoom = minZoom || 0;
+-    this._maxZoom = maxZoom || 22;
++    do {
++      idx = operators.indexOf(buf.slice(0, buf.length + j).join(''))
++      res = operators[idx]
+ 
+-    this.latRange = [-85.05113, 85.05113];
++      if(idx === -1) {
++        if(j-- + buf.length > 0) continue
++        res = buf.slice(0, 1).join('')
++      }
+ 
+-    this.width = 0;
+-    this.height = 0;
+-    this._center = new LngLat(0, 0);
+-    this.zoom = 0;
+-    this.angle = 0;
+-    this._altitude = 1.5;
+-    this._pitch = 0;
+-    this._unmodified = true;
+-}
++      token(res)
+ 
+-Transform.prototype = {
+-    get minZoom() { return this._minZoom; },
+-    set minZoom(zoom) {
+-        if (this._minZoom === zoom) return;
+-        this._minZoom = zoom;
+-        this.zoom = Math.max(this.zoom, zoom);
+-    },
++      start += res.length
++      content = content.slice(res.length)
++      return content.length
++    } while(1)
++  }
+ 
+-    get maxZoom() { return this._maxZoom; },
+-    set maxZoom(zoom) {
+-        if (this._maxZoom === zoom) return;
+-        this._maxZoom = zoom;
+-        this.zoom = Math.min(this.zoom, zoom);
+-    },
++  function hex() {
++    if(/[^a-fA-F0-9]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
+ 
+-    get worldSize() {
+-        return this.tileSize * this.scale;
+-    },
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-    get centerPoint() {
+-        return this.size._div(2);
+-    },
++  function integer() {
++    if(c === '.') {
++      content.push(c)
++      mode = FLOAT
++      last = c
++      return i + 1
++    }
+ 
+-    get size() {
+-        return new Point(this.width, this.height);
+-    },
++    if(/[eE]/.test(c)) {
++      content.push(c)
++      mode = FLOAT
++      last = c
++      return i + 1
++    }
+ 
+-    get bearing() {
+-        return -this.angle / Math.PI * 180;
+-    },
+-    set bearing(bearing) {
+-        var b = -wrap(bearing, -180, 180) * Math.PI / 180;
+-        if (this.angle === b) return;
+-        this._unmodified = false;
+-        this.angle = b;
+-        this._calcProjMatrix();
++    if(c === 'x' && content.length === 1 && content[0] === '0') {
++      mode = HEX
++      content.push(c)
++      last = c
++      return i + 1
++    }
+ 
+-        // 2x2 matrix for rotating points
+-        this.rotationMatrix = mat2.create();
+-        mat2.rotate(this.rotationMatrix, this.rotationMatrix, this.angle);
+-    },
++    if(/[^\d]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
+ 
+-    get pitch() {
+-        return this._pitch / Math.PI * 180;
+-    },
+-    set pitch(pitch) {
+-        var p = Math.min(60, pitch) / 180 * Math.PI;
+-        if (this._pitch === p) return;
+-        this._unmodified = false;
+-        this._pitch = p;
+-        this._calcProjMatrix();
+-    },
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-    get altitude() {
+-        return this._altitude;
+-    },
+-    set altitude(altitude) {
+-        var a = Math.max(0.75, altitude);
+-        if (this._altitude === a) return;
+-        this._unmodified = false;
+-        this._altitude = a;
+-        this._calcProjMatrix();
+-    },
++  function decimal() {
++    if(c === 'f') {
++      content.push(c)
++      last = c
++      i += 1
++    }
+ 
+-    get zoom() { return this._zoom; },
+-    set zoom(zoom) {
+-        var z = Math.min(Math.max(zoom, this.minZoom), this.maxZoom);
+-        if (this._zoom === z) return;
+-        this._unmodified = false;
+-        this._zoom = z;
+-        this.scale = this.zoomScale(z);
+-        this.tileZoom = Math.floor(z);
+-        this.zoomFraction = z - this.tileZoom;
+-        this._calcProjMatrix();
+-        this._constrain();
+-    },
++    if(/[eE]/.test(c)) {
++      content.push(c)
++      last = c
++      return i + 1
++    }
+ 
+-    get center() { return this._center; },
+-    set center(center) {
+-        if (center.lat === this._center.lat && center.lng === this._center.lng) return;
+-        this._unmodified = false;
+-        this._center = center;
+-        this._calcProjMatrix();
+-        this._constrain();
+-    },
++    if (c === '-' && /[eE]/.test(last)) {
++      content.push(c)
++      last = c
++      return i + 1
++    }
+ 
+-    resize: function(width, height) {
+-        this.width = width;
+-        this.height = height;
++    if(/[^\d]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
+ 
+-        this.pixelsToGLUnits = [2 / width, -2 / height];
+-        this._calcProjMatrix();
+-        this._constrain();
+-    },
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-    get unmodified() { return this._unmodified; },
++  function readtoken() {
++    if(/[^\d\w_]/.test(c)) {
++      var contentstr = content.join('')
++      if(allLiterals.indexOf(contentstr) > -1) {
++        mode = KEYWORD
++      } else if(allBuiltins.indexOf(contentstr) > -1) {
++        mode = BUILTIN
++      } else {
++        mode = IDENT
++      }
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
++    content.push(c)
++    last = c
++    return i + 1
++  }
++}
+ 
+-    zoomScale: function(zoom) { return Math.pow(2, zoom); },
+-    scaleZoom: function(scale) { return Math.log(scale) / Math.LN2; },
++},{"./lib/builtins":217,"./lib/builtins-300es":216,"./lib/literals":219,"./lib/literals-300es":218,"./lib/operators":220}],216:[function(require,module,exports){
++// 300es builtins/reserved words that were previously valid in v100
++var v100 = require('./builtins')
+ 
+-    project: function(lnglat, worldSize) {
+-        return new Point(
+-            this.lngX(lnglat.lng, worldSize),
+-            this.latY(lnglat.lat, worldSize));
+-    },
++// The texture2D|Cube functions have been removed
++// And the gl_ features are updated
++v100 = v100.slice().filter(function (b) {
++  return !/^(gl\_|texture)/.test(b)
++})
+ 
+-    unproject: function(point, worldSize) {
+-        return new LngLat(
+-            this.xLng(point.x, worldSize),
+-            this.yLat(point.y, worldSize));
+-    },
++module.exports = v100.concat([
++  // the updated gl_ constants
++    'gl_VertexID'
++  , 'gl_InstanceID'
++  , 'gl_Position'
++  , 'gl_PointSize'
++  , 'gl_FragCoord'
++  , 'gl_FrontFacing'
++  , 'gl_FragDepth'
++  , 'gl_PointCoord'
++  , 'gl_MaxVertexAttribs'
++  , 'gl_MaxVertexUniformVectors'
++  , 'gl_MaxVertexOutputVectors'
++  , 'gl_MaxFragmentInputVectors'
++  , 'gl_MaxVertexTextureImageUnits'
++  , 'gl_MaxCombinedTextureImageUnits'
++  , 'gl_MaxTextureImageUnits'
++  , 'gl_MaxFragmentUniformVectors'
++  , 'gl_MaxDrawBuffers'
++  , 'gl_MinProgramTexelOffset'
++  , 'gl_MaxProgramTexelOffset'
++  , 'gl_DepthRangeParameters'
++  , 'gl_DepthRange'
+ 
+-    get x() { return this.lngX(this.center.lng); },
+-    get y() { return this.latY(this.center.lat); },
++  // other builtins
++  , 'trunc'
++  , 'round'
++  , 'roundEven'
++  , 'isnan'
++  , 'isinf'
++  , 'floatBitsToInt'
++  , 'floatBitsToUint'
++  , 'intBitsToFloat'
++  , 'uintBitsToFloat'
++  , 'packSnorm2x16'
++  , 'unpackSnorm2x16'
++  , 'packUnorm2x16'
++  , 'unpackUnorm2x16'
++  , 'packHalf2x16'
++  , 'unpackHalf2x16'
++  , 'outerProduct'
++  , 'transpose'
++  , 'determinant'
++  , 'inverse'
++  , 'texture'
++  , 'textureSize'
++  , 'textureProj'
++  , 'textureLod'
++  , 'textureOffset'
++  , 'texelFetch'
++  , 'texelFetchOffset'
++  , 'textureProjOffset'
++  , 'textureLodOffset'
++  , 'textureProjLod'
++  , 'textureProjLodOffset'
++  , 'textureGrad'
++  , 'textureGradOffset'
++  , 'textureProjGrad'
++  , 'textureProjGradOffset'
++])
++
++},{"./builtins":217}],217:[function(require,module,exports){
++module.exports = [
++  // Keep this list sorted
++  'abs'
++  , 'acos'
++  , 'all'
++  , 'any'
++  , 'asin'
++  , 'atan'
++  , 'ceil'
++  , 'clamp'
++  , 'cos'
++  , 'cross'
++  , 'dFdx'
++  , 'dFdy'
++  , 'degrees'
++  , 'distance'
++  , 'dot'
++  , 'equal'
++  , 'exp'
++  , 'exp2'
++  , 'faceforward'
++  , 'floor'
++  , 'fract'
++  , 'gl_BackColor'
++  , 'gl_BackLightModelProduct'
++  , 'gl_BackLightProduct'
++  , 'gl_BackMaterial'
++  , 'gl_BackSecondaryColor'
++  , 'gl_ClipPlane'
++  , 'gl_ClipVertex'
++  , 'gl_Color'
++  , 'gl_DepthRange'
++  , 'gl_DepthRangeParameters'
++  , 'gl_EyePlaneQ'
++  , 'gl_EyePlaneR'
++  , 'gl_EyePlaneS'
++  , 'gl_EyePlaneT'
++  , 'gl_Fog'
++  , 'gl_FogCoord'
++  , 'gl_FogFragCoord'
++  , 'gl_FogParameters'
++  , 'gl_FragColor'
++  , 'gl_FragCoord'
++  , 'gl_FragData'
++  , 'gl_FragDepth'
++  , 'gl_FragDepthEXT'
++  , 'gl_FrontColor'
++  , 'gl_FrontFacing'
++  , 'gl_FrontLightModelProduct'
++  , 'gl_FrontLightProduct'
++  , 'gl_FrontMaterial'
++  , 'gl_FrontSecondaryColor'
++  , 'gl_LightModel'
++  , 'gl_LightModelParameters'
++  , 'gl_LightModelProducts'
++  , 'gl_LightProducts'
++  , 'gl_LightSource'
++  , 'gl_LightSourceParameters'
++  , 'gl_MaterialParameters'
++  , 'gl_MaxClipPlanes'
++  , 'gl_MaxCombinedTextureImageUnits'
++  , 'gl_MaxDrawBuffers'
++  , 'gl_MaxFragmentUniformComponents'
++  , 'gl_MaxLights'
++  , 'gl_MaxTextureCoords'
++  , 'gl_MaxTextureImageUnits'
++  , 'gl_MaxTextureUnits'
++  , 'gl_MaxVaryingFloats'
++  , 'gl_MaxVertexAttribs'
++  , 'gl_MaxVertexTextureImageUnits'
++  , 'gl_MaxVertexUniformComponents'
++  , 'gl_ModelViewMatrix'
++  , 'gl_ModelViewMatrixInverse'
++  , 'gl_ModelViewMatrixInverseTranspose'
++  , 'gl_ModelViewMatrixTranspose'
++  , 'gl_ModelViewProjectionMatrix'
++  , 'gl_ModelViewProjectionMatrixInverse'
++  , 'gl_ModelViewProjectionMatrixInverseTranspose'
++  , 'gl_ModelViewProjectionMatrixTranspose'
++  , 'gl_MultiTexCoord0'
++  , 'gl_MultiTexCoord1'
++  , 'gl_MultiTexCoord2'
++  , 'gl_MultiTexCoord3'
++  , 'gl_MultiTexCoord4'
++  , 'gl_MultiTexCoord5'
++  , 'gl_MultiTexCoord6'
++  , 'gl_MultiTexCoord7'
++  , 'gl_Normal'
++  , 'gl_NormalMatrix'
++  , 'gl_NormalScale'
++  , 'gl_ObjectPlaneQ'
++  , 'gl_ObjectPlaneR'
++  , 'gl_ObjectPlaneS'
++  , 'gl_ObjectPlaneT'
++  , 'gl_Point'
++  , 'gl_PointCoord'
++  , 'gl_PointParameters'
++  , 'gl_PointSize'
++  , 'gl_Position'
++  , 'gl_ProjectionMatrix'
++  , 'gl_ProjectionMatrixInverse'
++  , 'gl_ProjectionMatrixInverseTranspose'
++  , 'gl_ProjectionMatrixTranspose'
++  , 'gl_SecondaryColor'
++  , 'gl_TexCoord'
++  , 'gl_TextureEnvColor'
++  , 'gl_TextureMatrix'
++  , 'gl_TextureMatrixInverse'
++  , 'gl_TextureMatrixInverseTranspose'
++  , 'gl_TextureMatrixTranspose'
++  , 'gl_Vertex'
++  , 'greaterThan'
++  , 'greaterThanEqual'
++  , 'inversesqrt'
++  , 'length'
++  , 'lessThan'
++  , 'lessThanEqual'
++  , 'log'
++  , 'log2'
++  , 'matrixCompMult'
++  , 'max'
++  , 'min'
++  , 'mix'
++  , 'mod'
++  , 'normalize'
++  , 'not'
++  , 'notEqual'
++  , 'pow'
++  , 'radians'
++  , 'reflect'
++  , 'refract'
++  , 'sign'
++  , 'sin'
++  , 'smoothstep'
++  , 'sqrt'
++  , 'step'
++  , 'tan'
++  , 'texture2D'
++  , 'texture2DLod'
++  , 'texture2DProj'
++  , 'texture2DProjLod'
++  , 'textureCube'
++  , 'textureCubeLod'
++  , 'texture2DLodEXT'
++  , 'texture2DProjLodEXT'
++  , 'textureCubeLodEXT'
++  , 'texture2DGradEXT'
++  , 'texture2DProjGradEXT'
++  , 'textureCubeGradEXT'
++]
+ 
+-    get point() { return new Point(this.x, this.y); },
++},{}],218:[function(require,module,exports){
++var v100 = require('./literals')
+ 
+-    /**
+-     * latitude to absolute x coord
+-     * @param {number} lon
+-     * @param {number} [worldSize=this.worldSize]
+-     * @returns {number} pixel coordinate
+-     * @private
+-     */
+-    lngX: function(lng, worldSize) {
+-        return (180 + lng) * (worldSize || this.worldSize) / 360;
+-    },
+-    /**
+-     * latitude to absolute y coord
+-     * @param {number} lat
+-     * @param {number} [worldSize=this.worldSize]
+-     * @returns {number} pixel coordinate
+-     * @private
+-     */
+-    latY: function(lat, worldSize) {
+-        var y = 180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360));
+-        return (180 - y) * (worldSize || this.worldSize) / 360;
+-    },
++module.exports = v100.slice().concat([
++   'layout'
++  , 'centroid'
++  , 'smooth'
++  , 'case'
++  , 'mat2x2'
++  , 'mat2x3'
++  , 'mat2x4'
++  , 'mat3x2'
++  , 'mat3x3'
++  , 'mat3x4'
++  , 'mat4x2'
++  , 'mat4x3'
++  , 'mat4x4'
++  , 'uint'
++  , 'uvec2'
++  , 'uvec3'
++  , 'uvec4'
++  , 'samplerCubeShadow'
++  , 'sampler2DArray'
++  , 'sampler2DArrayShadow'
++  , 'isampler2D'
++  , 'isampler3D'
++  , 'isamplerCube'
++  , 'isampler2DArray'
++  , 'usampler2D'
++  , 'usampler3D'
++  , 'usamplerCube'
++  , 'usampler2DArray'
++  , 'coherent'
++  , 'restrict'
++  , 'readonly'
++  , 'writeonly'
++  , 'resource'
++  , 'atomic_uint'
++  , 'noperspective'
++  , 'patch'
++  , 'sample'
++  , 'subroutine'
++  , 'common'
++  , 'partition'
++  , 'active'
++  , 'filter'
++  , 'image1D'
++  , 'image2D'
++  , 'image3D'
++  , 'imageCube'
++  , 'iimage1D'
++  , 'iimage2D'
++  , 'iimage3D'
++  , 'iimageCube'
++  , 'uimage1D'
++  , 'uimage2D'
++  , 'uimage3D'
++  , 'uimageCube'
++  , 'image1DArray'
++  , 'image2DArray'
++  , 'iimage1DArray'
++  , 'iimage2DArray'
++  , 'uimage1DArray'
++  , 'uimage2DArray'
++  , 'image1DShadow'
++  , 'image2DShadow'
++  , 'image1DArrayShadow'
++  , 'image2DArrayShadow'
++  , 'imageBuffer'
++  , 'iimageBuffer'
++  , 'uimageBuffer'
++  , 'sampler1DArray'
++  , 'sampler1DArrayShadow'
++  , 'isampler1D'
++  , 'isampler1DArray'
++  , 'usampler1D'
++  , 'usampler1DArray'
++  , 'isampler2DRect'
++  , 'usampler2DRect'
++  , 'samplerBuffer'
++  , 'isamplerBuffer'
++  , 'usamplerBuffer'
++  , 'sampler2DMS'
++  , 'isampler2DMS'
++  , 'usampler2DMS'
++  , 'sampler2DMSArray'
++  , 'isampler2DMSArray'
++  , 'usampler2DMSArray'
++])
+ 
+-    xLng: function(x, worldSize) {
+-        return x * 360 / (worldSize || this.worldSize) - 180;
+-    },
+-    yLat: function(y, worldSize) {
+-        var y2 = 180 - y * 360 / (worldSize || this.worldSize);
+-        return 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90;
+-    },
++},{"./literals":219}],219:[function(require,module,exports){
++module.exports = [
++  // current
++    'precision'
++  , 'highp'
++  , 'mediump'
++  , 'lowp'
++  , 'attribute'
++  , 'const'
++  , 'uniform'
++  , 'varying'
++  , 'break'
++  , 'continue'
++  , 'do'
++  , 'for'
++  , 'while'
++  , 'if'
++  , 'else'
++  , 'in'
++  , 'out'
++  , 'inout'
++  , 'float'
++  , 'int'
++  , 'void'
++  , 'bool'
++  , 'true'
++  , 'false'
++  , 'discard'
++  , 'return'
++  , 'mat2'
++  , 'mat3'
++  , 'mat4'
++  , 'vec2'
++  , 'vec3'
++  , 'vec4'
++  , 'ivec2'
++  , 'ivec3'
++  , 'ivec4'
++  , 'bvec2'
++  , 'bvec3'
++  , 'bvec4'
++  , 'sampler1D'
++  , 'sampler2D'
++  , 'sampler3D'
++  , 'samplerCube'
++  , 'sampler1DShadow'
++  , 'sampler2DShadow'
++  , 'struct'
+ 
+-    panBy: function(offset) {
+-        var point = this.centerPoint._add(offset);
+-        this.center = this.pointLocation(point);
+-    },
++  // future
++  , 'asm'
++  , 'class'
++  , 'union'
++  , 'enum'
++  , 'typedef'
++  , 'template'
++  , 'this'
++  , 'packed'
++  , 'goto'
++  , 'switch'
++  , 'default'
++  , 'inline'
++  , 'noinline'
++  , 'volatile'
++  , 'public'
++  , 'static'
++  , 'extern'
++  , 'external'
++  , 'interface'
++  , 'long'
++  , 'short'
++  , 'double'
++  , 'half'
++  , 'fixed'
++  , 'unsigned'
++  , 'input'
++  , 'output'
++  , 'hvec2'
++  , 'hvec3'
++  , 'hvec4'
++  , 'dvec2'
++  , 'dvec3'
++  , 'dvec4'
++  , 'fvec2'
++  , 'fvec3'
++  , 'fvec4'
++  , 'sampler2DRect'
++  , 'sampler3DRect'
++  , 'sampler2DRectShadow'
++  , 'sizeof'
++  , 'cast'
++  , 'namespace'
++  , 'using'
++]
+ 
+-    setLocationAtPoint: function(lnglat, point) {
+-        var c = this.locationCoordinate(lnglat);
+-        var coordAtPoint = this.pointCoordinate(point);
+-        var coordCenter = this.pointCoordinate(this.centerPoint);
+-        var translate = coordAtPoint._sub(c);
+-        this._unmodified = false;
+-        this.center = this.coordinateLocation(coordCenter._sub(translate));
+-    },
++},{}],220:[function(require,module,exports){
++module.exports = [
++    '<<='
++  , '>>='
++  , '++'
++  , '--'
++  , '<<'
++  , '>>'
++  , '<='
++  , '>='
++  , '=='
++  , '!='
++  , '&&'
++  , '||'
++  , '+='
++  , '-='
++  , '*='
++  , '/='
++  , '%='
++  , '&='
++  , '^^'
++  , '^='
++  , '|='
++  , '('
++  , ')'
++  , '['
++  , ']'
++  , '.'
++  , '!'
++  , '~'
++  , '*'
++  , '/'
++  , '%'
++  , '+'
++  , '-'
++  , '<'
++  , '>'
++  , '&'
++  , '^'
++  , '|'
++  , '?'
++  , ':'
++  , '='
++  , ','
++  , ';'
++  , '{'
++  , '}'
++]
+ 
+-    /**
+-     * Given a location, return the screen point that corresponds to it
+-     * @param {LngLat} lnglat location
+-     * @returns {Point} screen point
+-     * @private
+-     */
+-    locationPoint: function(lnglat) {
+-        return this.coordinatePoint(this.locationCoordinate(lnglat));
+-    },
++},{}],221:[function(require,module,exports){
++var tokenize = require('./index')
+ 
+-    /**
+-     * Given a point on screen, return its lnglat
+-     * @param {Point} p screen point
+-     * @returns {LngLat} lnglat location
+-     * @private
+-     */
+-    pointLocation: function(p) {
+-        return this.coordinateLocation(this.pointCoordinate(p));
+-    },
++module.exports = tokenizeString
+ 
+-    /**
+-     * Given a geographical lnglat, return an unrounded
+-     * coordinate that represents it at this transform's zoom level and
+-     * worldsize.
+-     * @param {LngLat} lnglat
+-     * @returns {Coordinate}
+-     * @private
+-     */
+-    locationCoordinate: function(lnglat) {
+-        var k = this.zoomScale(this.tileZoom) / this.worldSize,
+-            ll = LngLat.convert(lnglat);
++function tokenizeString(str, opt) {
++  var generator = tokenize(opt)
++  var tokens = []
+ 
+-        return new Coordinate(
+-            this.lngX(ll.lng) * k,
+-            this.latY(ll.lat) * k,
+-            this.tileZoom);
+-    },
++  tokens = tokens.concat(generator(str))
++  tokens = tokens.concat(generator(null))
+ 
+-    /**
+-     * Given a Coordinate, return its geographical position.
+-     * @param {Coordinate} coord
+-     * @returns {LngLat} lnglat
+-     * @private
+-     */
+-    coordinateLocation: function(coord) {
+-        var worldSize = this.zoomScale(coord.zoom);
+-        return new LngLat(
+-            this.xLng(coord.column, worldSize),
+-            this.yLat(coord.row, worldSize));
+-    },
++  return tokens
++}
+ 
+-    pointCoordinate: function(p) {
++},{"./index":215}],222:[function(require,module,exports){
++'use strict';
+ 
+-        var targetZ = 0;
++module.exports = GridIndex;
+ 
+-        var matrix = this.coordinatePointMatrix(this.tileZoom);
+-        mat4.invert(matrix, matrix);
++var NUM_PARAMS = 3;
+ 
+-        if (!matrix) throw new Error("failed to invert matrix");
++function GridIndex(extent, n, padding) {
++    var cells = this.cells = [];
+ 
+-        // since we don't know the correct projected z value for the point,
+-        // unproject two points to get a line and then find the point on that
+-        // line with z=0
++    if (extent instanceof ArrayBuffer) {
++        this.arrayBuffer = extent;
++        var array = new Int32Array(this.arrayBuffer);
++        extent = array[0];
++        n = array[1];
++        padding = array[2];
+ 
+-        var coord0 = [p.x, p.y, 0, 1];
+-        var coord1 = [p.x, p.y, 1, 1];
++        this.d = n + 2 * padding;
++        for (var k = 0; k < this.d * this.d; k++) {
++            var start = array[NUM_PARAMS + k];
++            var end = array[NUM_PARAMS + k + 1];
++            cells.push(start === end ?
++                    null :
++                    array.subarray(start, end));
++        }
++        var keysOffset = array[NUM_PARAMS + cells.length];
++        var bboxesOffset = array[NUM_PARAMS + cells.length + 1];
++        this.keys = array.subarray(keysOffset, bboxesOffset);
++        this.bboxes = array.subarray(bboxesOffset);
+ 
+-        vec4.transformMat4(coord0, coord0, matrix);
+-        vec4.transformMat4(coord1, coord1, matrix);
++        this.insert = this._insertReadonly;
+ 
+-        var w0 = coord0[3];
+-        var w1 = coord1[3];
+-        var x0 = coord0[0] / w0;
+-        var x1 = coord1[0] / w1;
+-        var y0 = coord0[1] / w0;
+-        var y1 = coord1[1] / w1;
+-        var z0 = coord0[2] / w0;
+-        var z1 = coord1[2] / w1;
++    } else {
++        this.d = n + 2 * padding;
++        for (var i = 0; i < this.d * this.d; i++) {
++            cells.push([]);
++        }
++        this.keys = [];
++        this.bboxes = [];
++    }
+ 
++    this.n = n;
++    this.extent = extent;
++    this.padding = padding;
++    this.scale = n / extent;
++    this.uid = 0;
+ 
+-        var t = z0 === z1 ? 0 : (targetZ - z0) / (z1 - z0);
++    var p = (padding / n) * extent;
++    this.min = -p;
++    this.max = extent + p;
++}
+ 
+-        return new Coordinate(
+-            interp(x0, x1, t),
+-            interp(y0, y1, t),
+-            this.tileZoom);
+-    },
+ 
+-    /**
+-     * Given a coordinate, return the screen point that corresponds to it
+-     * @param {Coordinate} coord
+-     * @returns {Point} screen point
+-     * @private
+-     */
+-    coordinatePoint: function(coord) {
+-        var matrix = this.coordinatePointMatrix(coord.zoom);
+-        var p = [coord.column, coord.row, 0, 1];
+-        vec4.transformMat4(p, p, matrix);
+-        return new Point(p[0] / p[3], p[1] / p[3]);
+-    },
++GridIndex.prototype.insert = function(key, x1, y1, x2, y2) {
++    this._forEachCell(x1, y1, x2, y2, this._insertCell, this.uid++);
++    this.keys.push(key);
++    this.bboxes.push(x1);
++    this.bboxes.push(y1);
++    this.bboxes.push(x2);
++    this.bboxes.push(y2);
++};
+ 
+-    coordinatePointMatrix: function(z) {
+-        var proj = mat4.copy(new Float64Array(16), this.projMatrix);
+-        var scale = this.worldSize / this.zoomScale(z);
+-        mat4.scale(proj, proj, [scale, scale, 1]);
+-        mat4.multiply(proj, this.getPixelMatrix(), proj);
+-        return proj;
+-    },
++GridIndex.prototype._insertReadonly = function() {
++    throw 'Cannot insert into a GridIndex created from an ArrayBuffer.';
++};
+ 
+-    /**
+-     * converts gl coordinates -1..1 to pixels 0..width
+-     * @returns {Object} matrix
+-     * @private
+-     */
+-    getPixelMatrix: function() {
+-        var m = mat4.create();
+-        mat4.scale(m, m, [this.width / 2, -this.height / 2, 1]);
+-        mat4.translate(m, m, [1, -1, 0]);
+-        return m;
+-    },
++GridIndex.prototype._insertCell = function(x1, y1, x2, y2, cellIndex, uid) {
++    this.cells[cellIndex].push(uid);
++};
+ 
+-    /**
+-     * Calculate the posMatrix that, given a tile coordinate, would be used to display the tile on a map.
+-     * @param {TileCoord|Coordinate} coord
+-     * @param {Number} maxZoom maximum source zoom to account for overscaling
+-     * @private
+-     */
+-    calculatePosMatrix: function(coord, maxZoom) {
+-        if (maxZoom === undefined) maxZoom = Infinity;
+-        if (coord instanceof TileCoord) coord = coord.toCoordinate(maxZoom);
++GridIndex.prototype.query = function(x1, y1, x2, y2) {
++    var min = this.min;
++    var max = this.max;
++    if (x1 <= min && y1 <= min && max <= x2 && max <= y2) {
++        return this.keys.slice();
+ 
+-        // Initialize model-view matrix that converts from the tile coordinates to screen coordinates.
++    } else {
++        var result = [];
++        var seenUids = {};
++        this._forEachCell(x1, y1, x2, y2, this._queryCell, result, seenUids);
++        return result;
++    }
++};
+ 
+-        // if z > maxzoom then the tile is actually a overscaled maxzoom tile,
+-        // so calculate the matrix the maxzoom tile would use.
+-        var z = Math.min(coord.zoom, maxZoom);
++GridIndex.prototype._queryCell = function(x1, y1, x2, y2, cellIndex, result, seenUids) {
++    var cell = this.cells[cellIndex];
++    if (cell !== null) {
++        var keys = this.keys;
++        var bboxes = this.bboxes;
++        for (var u = 0; u < cell.length; u++) {
++            var uid = cell[u];
++            if (seenUids[uid] === undefined) {
++                var offset = uid * 4;
++                if ((x1 <= bboxes[offset + 2]) &&
++                    (y1 <= bboxes[offset + 3]) &&
++                    (x2 >= bboxes[offset + 0]) &&
++                    (y2 >= bboxes[offset + 1])) {
++                    seenUids[uid] = true;
++                    result.push(keys[uid]);
++                } else {
++                    seenUids[uid] = false;
++                }
++            }
++        }
++    }
++};
+ 
+-        var scale = this.worldSize / Math.pow(2, z);
+-        var posMatrix = new Float64Array(16);
++GridIndex.prototype._forEachCell = function(x1, y1, x2, y2, fn, arg1, arg2) {
++    var cx1 = this._convertToCellCoord(x1);
++    var cy1 = this._convertToCellCoord(y1);
++    var cx2 = this._convertToCellCoord(x2);
++    var cy2 = this._convertToCellCoord(y2);
++    for (var x = cx1; x <= cx2; x++) {
++        for (var y = cy1; y <= cy2; y++) {
++            var cellIndex = this.d * y + x;
++            if (fn.call(this, x1, y1, x2, y2, cellIndex, arg1, arg2)) return;
++        }
++    }
++};
+ 
+-        mat4.identity(posMatrix);
+-        mat4.translate(posMatrix, posMatrix, [coord.column * scale, coord.row * scale, 0]);
+-        mat4.scale(posMatrix, posMatrix, [ scale / EXTENT, scale / EXTENT, 1 ]);
+-        mat4.multiply(posMatrix, this.projMatrix, posMatrix);
++GridIndex.prototype._convertToCellCoord = function(x) {
++    return Math.max(0, Math.min(this.d - 1, Math.floor(x * this.scale) + this.padding));
++};
+ 
+-        return new Float32Array(posMatrix);
+-    },
++GridIndex.prototype.toArrayBuffer = function() {
++    if (this.arrayBuffer) return this.arrayBuffer;
+ 
+-    _constrain: function() {
+-        if (!this.center || !this.width || !this.height || this._constraining) return;
++    var cells = this.cells;
+ 
+-        this._constraining = true;
++    var metadataLength = NUM_PARAMS + this.cells.length + 1 + 1;
++    var totalCellLength = 0;
++    for (var i = 0; i < this.cells.length; i++) {
++        totalCellLength += this.cells[i].length;
++    }
+ 
+-        var minY, maxY, minX, maxX, sy, sx, x2, y2,
+-            size = this.size,
+-            unmodified = this._unmodified;
++    var array = new Int32Array(metadataLength + totalCellLength + this.keys.length + this.bboxes.length);
++    array[0] = this.extent;
++    array[1] = this.n;
++    array[2] = this.padding;
+ 
+-        if (this.latRange) {
+-            minY = this.latY(this.latRange[1]);
+-            maxY = this.latY(this.latRange[0]);
+-            sy = maxY - minY < size.y ? size.y / (maxY - minY) : 0;
+-        }
++    var offset = metadataLength;
++    for (var k = 0; k < cells.length; k++) {
++        var cell = cells[k];
++        array[NUM_PARAMS + k] = offset;
++        array.set(cell, offset);
++        offset += cell.length;
++    }
+ 
+-        if (this.lngRange) {
+-            minX = this.lngX(this.lngRange[0]);
+-            maxX = this.lngX(this.lngRange[1]);
+-            sx = maxX - minX < size.x ? size.x / (maxX - minX) : 0;
+-        }
++    array[NUM_PARAMS + cells.length] = offset;
++    array.set(this.keys, offset);
++    offset += this.keys.length;
+ 
+-        // how much the map should scale to fit the screen into given latitude/longitude ranges
+-        var s = Math.max(sx || 0, sy || 0);
++    array[NUM_PARAMS + cells.length + 1] = offset;
++    array.set(this.bboxes, offset);
++    offset += this.bboxes.length;
+ 
+-        if (s) {
+-            this.center = this.unproject(new Point(
+-                sx ? (maxX + minX) / 2 : this.x,
+-                sy ? (maxY + minY) / 2 : this.y));
+-            this.zoom += this.scaleZoom(s);
+-            this._unmodified = unmodified;
+-            this._constraining = false;
+-            return;
+-        }
++    return array.buffer;
++};
+ 
+-        if (this.latRange) {
+-            var y = this.y,
+-                h2 = size.y / 2;
++},{}],223:[function(require,module,exports){
++exports.read = function (buffer, offset, isLE, mLen, nBytes) {
++  var e, m
++  var eLen = nBytes * 8 - mLen - 1
++  var eMax = (1 << eLen) - 1
++  var eBias = eMax >> 1
++  var nBits = -7
++  var i = isLE ? (nBytes - 1) : 0
++  var d = isLE ? -1 : 1
++  var s = buffer[offset + i]
+ 
+-            if (y - h2 < minY) y2 = minY + h2;
+-            if (y + h2 > maxY) y2 = maxY - h2;
+-        }
++  i += d
+ 
+-        if (this.lngRange) {
+-            var x = this.x,
+-                w2 = size.x / 2;
++  e = s & ((1 << (-nBits)) - 1)
++  s >>= (-nBits)
++  nBits += eLen
++  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+ 
+-            if (x - w2 < minX) x2 = minX + w2;
+-            if (x + w2 > maxX) x2 = maxX - w2;
+-        }
++  m = e & ((1 << (-nBits)) - 1)
++  e >>= (-nBits)
++  nBits += mLen
++  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+ 
+-        // pan the map if the screen goes off the range
+-        if (x2 !== undefined || y2 !== undefined) {
+-            this.center = this.unproject(new Point(
+-                x2 !== undefined ? x2 : this.x,
+-                y2 !== undefined ? y2 : this.y));
+-        }
++  if (e === 0) {
++    e = 1 - eBias
++  } else if (e === eMax) {
++    return m ? NaN : ((s ? -1 : 1) * Infinity)
++  } else {
++    m = m + Math.pow(2, mLen)
++    e = e - eBias
++  }
++  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
++}
+ 
+-        this._unmodified = unmodified;
+-        this._constraining = false;
+-    },
++exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
++  var e, m, c
++  var eLen = nBytes * 8 - mLen - 1
++  var eMax = (1 << eLen) - 1
++  var eBias = eMax >> 1
++  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
++  var i = isLE ? 0 : (nBytes - 1)
++  var d = isLE ? 1 : -1
++  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+ 
+-    _calcProjMatrix: function() {
+-        var m = new Float64Array(16);
++  value = Math.abs(value)
+ 
+-        // Find the distance from the center point to the center top in altitude units using law of sines.
+-        var halfFov = Math.atan(0.5 / this.altitude);
+-        var topHalfSurfaceDistance = Math.sin(halfFov) * this.altitude / Math.sin(Math.PI / 2 - this._pitch - halfFov);
++  if (isNaN(value) || value === Infinity) {
++    m = isNaN(value) ? 1 : 0
++    e = eMax
++  } else {
++    e = Math.floor(Math.log(value) / Math.LN2)
++    if (value * (c = Math.pow(2, -e)) < 1) {
++      e--
++      c *= 2
++    }
++    if (e + eBias >= 1) {
++      value += rt / c
++    } else {
++      value += rt * Math.pow(2, 1 - eBias)
++    }
++    if (value * c >= 2) {
++      e++
++      c /= 2
++    }
+ 
+-        // Calculate z value of the farthest fragment that should be rendered.
+-        var farZ = Math.cos(Math.PI / 2 - this._pitch) * topHalfSurfaceDistance + this.altitude;
++    if (e + eBias >= eMax) {
++      m = 0
++      e = eMax
++    } else if (e + eBias >= 1) {
++      m = (value * c - 1) * Math.pow(2, mLen)
++      e = e + eBias
++    } else {
++      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
++      e = 0
++    }
++  }
+ 
+-        mat4.perspective(m, 2 * Math.atan((this.height / 2) / this.altitude), this.width / this.height, 0.1, farZ);
++  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+ 
+-        mat4.translate(m, m, [0, 0, -this.altitude]);
++  e = (e << mLen) | m
++  eLen += mLen
++  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+ 
+-        // After the rotateX, z values are in pixel units. Convert them to
+-        // altitude units. 1 altitude unit = the screen height.
+-        mat4.scale(m, m, [1, -1, 1 / this.height]);
++  buffer[offset + i - d] |= s * 128
++}
+ 
+-        mat4.rotateX(m, m, this._pitch);
+-        mat4.rotateZ(m, m, this.angle);
+-        mat4.translate(m, m, [-this.x, -this.y, 0]);
++},{}],224:[function(require,module,exports){
++"use strict"
+ 
+-        this.projMatrix = m;
+-    }
+-};
++//High level idea:
++// 1. Use Clarkson's incremental construction to find convex hull
++// 2. Point location in triangulation by jump and walk
+ 
+-},{"../data/bucket":247,"../source/tile_coord":281,"../util/interpolate":343,"../util/util":349,"./coordinate":255,"./lng_lat":256,"gl-matrix":363,"point-geometry":404}],259:[function(require,module,exports){
+-'use strict';
++module.exports = incrementalConvexHull
+ 
+-// Font data From Hershey Simplex Font
+-// http://paulbourke.net/dataformats/hershey/
+-var simplexFont = {
+-    " ": [16, []],
+-    "!": [10, [5, 21, 5, 7, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
+-    "\"": [16, [4, 21, 4, 14, -1, -1, 12, 21, 12, 14]],
+-    "#": [21, [11, 25, 4, -7, -1, -1, 17, 25, 10, -7, -1, -1, 4, 12, 18, 12, -1, -1, 3, 6, 17, 6]],
+-    "$": [20, [8, 25, 8, -4, -1, -1, 12, 25, 12, -4, -1, -1, 17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
+-    "%": [24, [21, 21, 3, 0, -1, -1, 8, 21, 10, 19, 10, 17, 9, 15, 7, 14, 5, 14, 3, 16, 3, 18, 4, 20, 6, 21, 8, 21, 10, 20, 13, 19, 16, 19, 19, 20, 21, 21, -1, -1, 17, 7, 15, 6, 14, 4, 14, 2, 16, 0, 18, 0, 20, 1, 21, 3, 21, 5, 19, 7, 17, 7]],
+-    "&": [26, [23, 12, 23, 13, 22, 14, 21, 14, 20, 13, 19, 11, 17, 6, 15, 3, 13, 1, 11, 0, 7, 0, 5, 1, 4, 2, 3, 4, 3, 6, 4, 8, 5, 9, 12, 13, 13, 14, 14, 16, 14, 18, 13, 20, 11, 21, 9, 20, 8, 18, 8, 16, 9, 13, 11, 10, 16, 3, 18, 1, 20, 0, 22, 0, 23, 1, 23, 2]],
+-    "'": [10, [5, 19, 4, 20, 5, 21, 6, 20, 6, 18, 5, 16, 4, 15]],
+-    "(": [14, [11, 25, 9, 23, 7, 20, 5, 16, 4, 11, 4, 7, 5, 2, 7, -2, 9, -5, 11, -7]],
+-    ")": [14, [3, 25, 5, 23, 7, 20, 9, 16, 10, 11, 10, 7, 9, 2, 7, -2, 5, -5, 3, -7]],
+-    "*": [16, [8, 21, 8, 9, -1, -1, 3, 18, 13, 12, -1, -1, 13, 18, 3, 12]],
+-    "+": [26, [13, 18, 13, 0, -1, -1, 4, 9, 22, 9]],
+-    ",": [10, [6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
+-    "-": [26, [4, 9, 22, 9]],
+-    ".": [10, [5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
+-    "/": [22, [20, 25, 2, -7]],
+-    "0": [20, [9, 21, 6, 20, 4, 17, 3, 12, 3, 9, 4, 4, 6, 1, 9, 0, 11, 0, 14, 1, 16, 4, 17, 9, 17, 12, 16, 17, 14, 20, 11, 21, 9, 21]],
+-    "1": [20, [6, 17, 8, 18, 11, 21, 11, 0]],
+-    "2": [20, [4, 16, 4, 17, 5, 19, 6, 20, 8, 21, 12, 21, 14, 20, 15, 19, 16, 17, 16, 15, 15, 13, 13, 10, 3, 0, 17, 0]],
+-    "3": [20, [5, 21, 16, 21, 10, 13, 13, 13, 15, 12, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
+-    "4": [20, [13, 21, 3, 7, 18, 7, -1, -1, 13, 21, 13, 0]],
+-    "5": [20, [15, 21, 5, 21, 4, 12, 5, 13, 8, 14, 11, 14, 14, 13, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
+-    "6": [20, [16, 18, 15, 20, 12, 21, 10, 21, 7, 20, 5, 17, 4, 12, 4, 7, 5, 3, 7, 1, 10, 0, 11, 0, 14, 1, 16, 3, 17, 6, 17, 7, 16, 10, 14, 12, 11, 13, 10, 13, 7, 12, 5, 10, 4, 7]],
+-    "7": [20, [17, 21, 7, 0, -1, -1, 3, 21, 17, 21]],
+-    "8": [20, [8, 21, 5, 20, 4, 18, 4, 16, 5, 14, 7, 13, 11, 12, 14, 11, 16, 9, 17, 7, 17, 4, 16, 2, 15, 1, 12, 0, 8, 0, 5, 1, 4, 2, 3, 4, 3, 7, 4, 9, 6, 11, 9, 12, 13, 13, 15, 14, 16, 16, 16, 18, 15, 20, 12, 21, 8, 21]],
+-    "9": [20, [16, 14, 15, 11, 13, 9, 10, 8, 9, 8, 6, 9, 4, 11, 3, 14, 3, 15, 4, 18, 6, 20, 9, 21, 10, 21, 13, 20, 15, 18, 16, 14, 16, 9, 15, 4, 13, 1, 10, 0, 8, 0, 5, 1, 4, 3]],
+-    ":": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
+-    ";": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
+-    "<": [24, [20, 18, 4, 9, 20, 0]],
+-    "=": [26, [4, 12, 22, 12, -1, -1, 4, 6, 22, 6]],
+-    ">": [24, [4, 18, 20, 9, 4, 0]],
+-    "?": [18, [3, 16, 3, 17, 4, 19, 5, 20, 7, 21, 11, 21, 13, 20, 14, 19, 15, 17, 15, 15, 14, 13, 13, 12, 9, 10, 9, 7, -1, -1, 9, 2, 8, 1, 9, 0, 10, 1, 9, 2]],
+-    "@": [27, [18, 13, 17, 15, 15, 16, 12, 16, 10, 15, 9, 14, 8, 11, 8, 8, 9, 6, 11, 5, 14, 5, 16, 6, 17, 8, -1, -1, 12, 16, 10, 14, 9, 11, 9, 8, 10, 6, 11, 5, -1, -1, 18, 16, 17, 8, 17, 6, 19, 5, 21, 5, 23, 7, 24, 10, 24, 12, 23, 15, 22, 17, 20, 19, 18, 20, 15, 21, 12, 21, 9, 20, 7, 19, 5, 17, 4, 15, 3, 12, 3, 9, 4, 6, 5, 4, 7, 2, 9, 1, 12, 0, 15, 0, 18, 1, 20, 2, 21, 3, -1, -1, 19, 16, 18, 8, 18, 6, 19, 5]],
+-    "A": [18, [9, 21, 1, 0, -1, -1, 9, 21, 17, 0, -1, -1, 4, 7, 14, 7]],
+-    "B": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, -1, -1, 4, 11, 13, 11, 16, 10, 17, 9, 18, 7, 18, 4, 17, 2, 16, 1, 13, 0, 4, 0]],
+-    "C": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5]],
+-    "D": [21, [4, 21, 4, 0, -1, -1, 4, 21, 11, 21, 14, 20, 16, 18, 17, 16, 18, 13, 18, 8, 17, 5, 16, 3, 14, 1, 11, 0, 4, 0]],
+-    "E": [19, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11, -1, -1, 4, 0, 17, 0]],
+-    "F": [18, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11]],
+-    "G": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 18, 8, -1, -1, 13, 8, 18, 8]],
+-    "H": [22, [4, 21, 4, 0, -1, -1, 18, 21, 18, 0, -1, -1, 4, 11, 18, 11]],
+-    "I": [8, [4, 21, 4, 0]],
+-    "J": [16, [12, 21, 12, 5, 11, 2, 10, 1, 8, 0, 6, 0, 4, 1, 3, 2, 2, 5, 2, 7]],
+-    "K": [21, [4, 21, 4, 0, -1, -1, 18, 21, 4, 7, -1, -1, 9, 12, 18, 0]],
+-    "L": [17, [4, 21, 4, 0, -1, -1, 4, 0, 16, 0]],
+-    "M": [24, [4, 21, 4, 0, -1, -1, 4, 21, 12, 0, -1, -1, 20, 21, 12, 0, -1, -1, 20, 21, 20, 0]],
+-    "N": [22, [4, 21, 4, 0, -1, -1, 4, 21, 18, 0, -1, -1, 18, 21, 18, 0]],
+-    "O": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21]],
+-    "P": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 14, 17, 12, 16, 11, 13, 10, 4, 10]],
+-    "Q": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21, -1, -1, 12, 4, 18, -2]],
+-    "R": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, 4, 11, -1, -1, 11, 11, 18, 0]],
+-    "S": [20, [17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
+-    "T": [16, [8, 21, 8, 0, -1, -1, 1, 21, 15, 21]],
+-    "U": [22, [4, 21, 4, 6, 5, 3, 7, 1, 10, 0, 12, 0, 15, 1, 17, 3, 18, 6, 18, 21]],
+-    "V": [18, [1, 21, 9, 0, -1, -1, 17, 21, 9, 0]],
+-    "W": [24, [2, 21, 7, 0, -1, -1, 12, 21, 7, 0, -1, -1, 12, 21, 17, 0, -1, -1, 22, 21, 17, 0]],
+-    "X": [20, [3, 21, 17, 0, -1, -1, 17, 21, 3, 0]],
+-    "Y": [18, [1, 21, 9, 11, 9, 0, -1, -1, 17, 21, 9, 11]],
+-    "Z": [20, [17, 21, 3, 0, -1, -1, 3, 21, 17, 21, -1, -1, 3, 0, 17, 0]],
+-    "[": [14, [4, 25, 4, -7, -1, -1, 5, 25, 5, -7, -1, -1, 4, 25, 11, 25, -1, -1, 4, -7, 11, -7]],
+-    "\\": [14, [0, 21, 14, -3]],
+-    "]": [14, [9, 25, 9, -7, -1, -1, 10, 25, 10, -7, -1, -1, 3, 25, 10, 25, -1, -1, 3, -7, 10, -7]],
+-    "^": [16, [6, 15, 8, 18, 10, 15, -1, -1, 3, 12, 8, 17, 13, 12, -1, -1, 8, 17, 8, 0]],
+-    "_": [16, [0, -2, 16, -2]],
+-    "`": [10, [6, 21, 5, 20, 4, 18, 4, 16, 5, 15, 6, 16, 5, 17]],
+-    "a": [19, [15, 14, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "b": [19, [4, 21, 4, 0, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
+-    "c": [18, [15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "d": [19, [15, 21, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "e": [18, [3, 8, 15, 8, 15, 10, 14, 12, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "f": [12, [10, 21, 8, 21, 6, 20, 5, 17, 5, 0, -1, -1, 2, 14, 9, 14]],
+-    "g": [19, [15, 14, 15, -2, 14, -5, 13, -6, 11, -7, 8, -7, 6, -6, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "h": [19, [4, 21, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
+-    "i": [8, [3, 21, 4, 20, 5, 21, 4, 22, 3, 21, -1, -1, 4, 14, 4, 0]],
+-    "j": [10, [5, 21, 6, 20, 7, 21, 6, 22, 5, 21, -1, -1, 6, 14, 6, -3, 5, -6, 3, -7, 1, -7]],
+-    "k": [17, [4, 21, 4, 0, -1, -1, 14, 14, 4, 4, -1, -1, 8, 8, 15, 0]],
+-    "l": [8, [4, 21, 4, 0]],
+-    "m": [30, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0, -1, -1, 15, 10, 18, 13, 20, 14, 23, 14, 25, 13, 26, 10, 26, 0]],
+-    "n": [19, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
+-    "o": [19, [8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3, 16, 6, 16, 8, 15, 11, 13, 13, 11, 14, 8, 14]],
+-    "p": [19, [4, 14, 4, -7, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
+-    "q": [19, [15, 14, 15, -7, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "r": [13, [4, 14, 4, 0, -1, -1, 4, 8, 5, 11, 7, 13, 9, 14, 12, 14]],
+-    "s": [17, [14, 11, 13, 13, 10, 14, 7, 14, 4, 13, 3, 11, 4, 9, 6, 8, 11, 7, 13, 6, 14, 4, 14, 3, 13, 1, 10, 0, 7, 0, 4, 1, 3, 3]],
+-    "t": [12, [5, 21, 5, 4, 6, 1, 8, 0, 10, 0, -1, -1, 2, 14, 9, 14]],
+-    "u": [19, [4, 14, 4, 4, 5, 1, 7, 0, 10, 0, 12, 1, 15, 4, -1, -1, 15, 14, 15, 0]],
+-    "v": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0]],
+-    "w": [22, [3, 14, 7, 0, -1, -1, 11, 14, 7, 0, -1, -1, 11, 14, 15, 0, -1, -1, 19, 14, 15, 0]],
+-    "x": [17, [3, 14, 14, 0, -1, -1, 14, 14, 3, 0]],
+-    "y": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0, 6, -4, 4, -6, 2, -7, 1, -7]],
+-    "z": [17, [14, 14, 3, 0, -1, -1, 3, 14, 14, 14, -1, -1, 3, 0, 14, 0]],
+-    "{": [14, [9, 25, 7, 24, 6, 23, 5, 21, 5, 19, 6, 17, 7, 16, 8, 14, 8, 12, 6, 10, -1, -1, 7, 24, 6, 22, 6, 20, 7, 18, 8, 17, 9, 15, 9, 13, 8, 11, 4, 9, 8, 7, 9, 5, 9, 3, 8, 1, 7, 0, 6, -2, 6, -4, 7, -6, -1, -1, 6, 8, 8, 6, 8, 4, 7, 2, 6, 1, 5, -1, 5, -3, 6, -5, 7, -6, 9, -7]],
+-    "|": [8, [4, 25, 4, -7]],
+-    "}": [14, [5, 25, 7, 24, 8, 23, 9, 21, 9, 19, 8, 17, 7, 16, 6, 14, 6, 12, 8, 10, -1, -1, 7, 24, 8, 22, 8, 20, 7, 18, 6, 17, 5, 15, 5, 13, 6, 11, 10, 9, 6, 7, 5, 5, 5, 3, 6, 1, 7, 0, 8, -2, 8, -4, 7, -6, -1, -1, 8, 8, 6, 6, 6, 4, 7, 2, 8, 1, 9, -1, 9, -3, 8, -5, 7, -6, 5, -7]],
+-    "~": [24, [3, 6, 3, 8, 4, 11, 6, 12, 8, 12, 10, 11, 14, 8, 16, 7, 18, 7, 20, 8, 21, 10, -1, -1, 3, 8, 4, 10, 6, 11, 8, 11, 10, 10, 14, 7, 16, 6, 18, 6, 20, 7, 21, 10, 21, 12]]
+-};
++var orient = require("robust-orientation")
++var compareCell = require("simplicial-complex").compareCells
+ 
+-module.exports = function textVertices(text, left, baseline, scale) {
+-    scale = scale || 1;
++function compareInt(a, b) {
++  return a - b
++}
+ 
+-    var strokes = [],
+-        i, len, j, len2, glyph, x, y, prev;
++function Simplex(vertices, adjacent, boundary) {
++  this.vertices = vertices
++  this.adjacent = adjacent
++  this.boundary = boundary
++  this.lastVisited = -1
++}
+ 
+-    for (i = 0, len = text.length; i < len; i++) {
+-        glyph = simplexFont[text[i]];
+-        if (!glyph) continue;
+-        prev = null;
++Simplex.prototype.flip = function() {
++  var t = this.vertices[0]
++  this.vertices[0] = this.vertices[1]
++  this.vertices[1] = t
++  var u = this.adjacent[0]
++  this.adjacent[0] = this.adjacent[1]
++  this.adjacent[1] = u
++}
+ 
+-        for (j = 0, len2 = glyph[1].length; j < len2; j += 2) {
+-            if (glyph[1][j] === -1 && glyph[1][j + 1] === -1) {
+-                prev = null;
++function GlueFacet(vertices, cell, index) {
++  this.vertices = vertices
++  this.cell = cell
++  this.index = index
++}
+ 
+-            } else {
+-                x = left + glyph[1][j] * scale;
+-                y = baseline - glyph[1][j + 1] * scale;
+-                if (prev) {
+-                    strokes.push(prev.x, prev.y, x, y);
+-                }
+-                prev = {x: x, y: y};
+-            }
+-        }
+-        left += glyph[0] * scale;
++function compareGlue(a, b) {
++  return compareCell(a.vertices, b.vertices)
++}
++
++function bakeOrient(d) {
++  var code = ["function orient(){var tuple=this.tuple;return test("]
++  for(var i=0; i<=d; ++i) {
++    if(i > 0) {
++      code.push(",")
+     }
++    code.push("tuple[", i, "]")
++  }
++  code.push(")}return orient")
++  var proc = new Function("test", code.join(""))
++  var test = orient[d+1]
++  if(!test) {
++    test = orient
++  }
++  return proc(test)
++}
+ 
+-    return strokes;
+-};
++var BAKED = []
+ 
+-},{}],260:[function(require,module,exports){
+-'use strict';
++function Triangulation(dimension, vertices, simplices) {
++  this.dimension = dimension
++  this.vertices = vertices
++  this.simplices = simplices
++  this.interior = simplices.filter(function(c) {
++    return !c.boundary
++  })
+ 
+-/**
+- * mapboxgl is a A WebGL JavaScript interactive maps library that can render
+- * [Mapbox vector tiles](https://www.mapbox.com/blog/vector-tiles/).
+- *
+- * @module mapboxgl
+- * @summary WebGL JavaScript map library
+- */
++  this.tuple = new Array(dimension+1)
++  for(var i=0; i<=dimension; ++i) {
++    this.tuple[i] = this.vertices[i]
++  }
+ 
+-// jshint -W079
+-var mapboxgl = module.exports = {};
++  var o = BAKED[dimension]
++  if(!o) {
++    o = BAKED[dimension] = bakeOrient(dimension)
++  }
++  this.orient = o
++}
+ 
+-mapboxgl.Map = require('./ui/map');
+-mapboxgl.Control = require('./ui/control/control');
+-mapboxgl.Navigation = require('./ui/control/navigation');
+-mapboxgl.Geolocate = require('./ui/control/geolocate');
+-mapboxgl.Attribution = require('./ui/control/attribution');
+-mapboxgl.Popup = require('./ui/popup');
++var proto = Triangulation.prototype
+ 
+-mapboxgl.GeoJSONSource = require('./source/geojson_source');
+-mapboxgl.VideoSource = require('./source/video_source');
+-mapboxgl.ImageSource = require('./source/image_source');
++//Degenerate situation where we are on boundary, but coplanar to face
++proto.handleBoundaryDegeneracy = function(cell, point) {
++  var d = this.dimension
++  var n = this.vertices.length - 1
++  var tuple = this.tuple
++  var verts = this.vertices
+ 
+-mapboxgl.Style = require('./style/style');
++  //Dumb solution: Just do dfs from boundary cell until we find any peak, or terminate
++  var toVisit = [ cell ]
++  cell.lastVisited = -n
++  while(toVisit.length > 0) {
++    cell = toVisit.pop()
++    var cellVerts = cell.vertices
++    var cellAdj = cell.adjacent
++    for(var i=0; i<=d; ++i) {
++      var neighbor = cellAdj[i]
++      if(!neighbor.boundary || neighbor.lastVisited <= -n) {
++        continue
++      }
++      var nv = neighbor.vertices
++      for(var j=0; j<=d; ++j) {
++        var vv = nv[j]
++        if(vv < 0) {
++          tuple[j] = point
++        } else {
++          tuple[j] = verts[vv]
++        }
++      }
++      var o = this.orient()
++      if(o > 0) {
++        return neighbor
++      }
++      neighbor.lastVisited = -n
++      if(o === 0) {
++        toVisit.push(neighbor)
++      }
++    }
++  }
++  return null
++}
+ 
+-mapboxgl.LngLat = require('./geo/lng_lat');
+-mapboxgl.LngLatBounds = require('./geo/lng_lat_bounds');
+-mapboxgl.Point = require('point-geometry');
++proto.walk = function(point, random) {
++  //Alias local properties
++  var n = this.vertices.length - 1
++  var d = this.dimension
++  var verts = this.vertices
++  var tuple = this.tuple
+ 
+-mapboxgl.Evented = require('./util/evented');
+-mapboxgl.util = require('./util/util');
++  //Compute initial jump cell
++  var initIndex = random ? (this.interior.length * Math.random())|0 : (this.interior.length-1)
++  var cell = this.interior[ initIndex ]
+ 
+-mapboxgl.supported = require('./util/browser').supported;
++  //Start walking
++outerLoop:
++  while(!cell.boundary) {
++    var cellVerts = cell.vertices
++    var cellAdj = cell.adjacent
+ 
+-var ajax = require('./util/ajax');
+-mapboxgl.util.getJSON = ajax.getJSON;
+-mapboxgl.util.getArrayBuffer = ajax.getArrayBuffer;
++    for(var i=0; i<=d; ++i) {
++      tuple[i] = verts[cellVerts[i]]
++    }
++    cell.lastVisited = n
+ 
+-var config = require('./util/config');
+-mapboxgl.config = config;
++    //Find farthest adjacent cell
++    for(var i=0; i<=d; ++i) {
++      var neighbor = cellAdj[i]
++      if(neighbor.lastVisited >= n) {
++        continue
++      }
++      var prev = tuple[i]
++      tuple[i] = point
++      var o = this.orient()
++      tuple[i] = prev
++      if(o < 0) {
++        cell = neighbor
++        continue outerLoop
++      } else {
++        if(!neighbor.boundary) {
++          neighbor.lastVisited = n
++        } else {
++          neighbor.lastVisited = -n
++        }
++      }
++    }
++    return
++  }
+ 
+-Object.defineProperty(mapboxgl, 'accessToken', {
+-    get: function() { return config.ACCESS_TOKEN; },
+-    set: function(token) { config.ACCESS_TOKEN = token; }
+-});
++  return cell
++}
+ 
+-},{"./geo/lng_lat":256,"./geo/lng_lat_bounds":257,"./source/geojson_source":274,"./source/image_source":276,"./source/video_source":284,"./style/style":290,"./ui/control/attribution":318,"./ui/control/control":319,"./ui/control/geolocate":320,"./ui/control/navigation":321,"./ui/map":331,"./ui/popup":332,"./util/ajax":334,"./util/browser":335,"./util/config":339,"./util/evented":341,"./util/util":349,"point-geometry":404}],261:[function(require,module,exports){
+-'use strict';
++proto.addPeaks = function(point, cell) {
++  var n = this.vertices.length - 1
++  var d = this.dimension
++  var verts = this.vertices
++  var tuple = this.tuple
++  var interior = this.interior
++  var simplices = this.simplices
+ 
+-var TilePyramid = require('../source/tile_pyramid');
+-var pyramid = new TilePyramid({ tileSize: 512 });
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++  //Walking finished at boundary, time to add peaks
++  var tovisit = [ cell ]
+ 
+-module.exports = drawBackground;
++  //Stretch initial boundary cell into a peak
++  cell.lastVisited = n
++  cell.vertices[cell.vertices.indexOf(-1)] = n
++  cell.boundary = false
++  interior.push(cell)
+ 
+-function drawBackground(painter, source, layer) {
+-    var gl = painter.gl;
+-    var transform = painter.transform;
+-    var color = util.premultiply(layer.paint['background-color']);
+-    var image = layer.paint['background-pattern'];
+-    var opacity = layer.paint['background-opacity'];
+-    var program;
++  //Record a list of all new boundaries created by added peaks so we can glue them together when we are all done
++  var glueFacets = []
++
++  //Do a traversal of the boundary walking outward from starting peak
++  while(tovisit.length > 0) {
++    //Pop off peak and walk over adjacent cells
++    var cell = tovisit.pop()
++    var cellVerts = cell.vertices
++    var cellAdj = cell.adjacent
++    var indexOfN = cellVerts.indexOf(n)
++    if(indexOfN < 0) {
++      continue
++    }
+ 
+-    var imagePosA = image ? painter.spriteAtlas.getPosition(image.from, true) : null;
+-    var imagePosB = image ? painter.spriteAtlas.getPosition(image.to, true) : null;
++    for(var i=0; i<=d; ++i) {
++      if(i === indexOfN) {
++        continue
++      }
+ 
+-    painter.setDepthSublayer(0);
+-    if (imagePosA && imagePosB) {
++      //For each boundary neighbor of the cell
++      var neighbor = cellAdj[i]
++      if(!neighbor.boundary || neighbor.lastVisited >= n) {
++        continue
++      }
+ 
+-        if (painter.isOpaquePass) return;
++      var nv = neighbor.vertices
+ 
+-        // Draw texture fill
+-        program = painter.useProgram('pattern');
+-        gl.uniform1i(program.u_image, 0);
+-        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
+-        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
+-        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
+-        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
+-        gl.uniform1f(program.u_opacity, opacity);
++      //Test if neighbor is a peak
++      if(neighbor.lastVisited !== -n) {      
++        //Compute orientation of p relative to each boundary peak
++        var indexOfNeg1 = 0
++        for(var j=0; j<=d; ++j) {
++          if(nv[j] < 0) {
++            indexOfNeg1 = j
++            tuple[j] = point
++          } else {
++            tuple[j] = verts[nv[j]]
++          }
++        }
++        var o = this.orient()
+ 
+-        gl.uniform1f(program.u_mix, image.t);
++        //Test if neighbor cell is also a peak
++        if(o > 0) {
++          nv[indexOfNeg1] = n
++          neighbor.boundary = false
++          interior.push(neighbor)
++          tovisit.push(neighbor)
++          neighbor.lastVisited = n
++          continue
++        } else {
++          neighbor.lastVisited = -n
++        }
++      }
+ 
+-        painter.spriteAtlas.bind(gl, true);
++      var na = neighbor.adjacent
+ 
+-        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
+-    } else {
+-        // Draw filling rectangle.
+-        if (painter.isOpaquePass !== (color[3] === 1)) return;
++      //Otherwise, replace neighbor with new face
++      var vverts = cellVerts.slice()
++      var vadj = cellAdj.slice()
++      var ncell = new Simplex(vverts, vadj, true)
++      simplices.push(ncell)
+ 
+-        program = painter.useProgram('fill');
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, opacity);
+-        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
+-    }
++      //Connect to neighbor
++      var opposite = na.indexOf(cell)
++      if(opposite < 0) {
++        continue
++      }
++      na[opposite] = ncell
++      vadj[indexOfN] = neighbor
+ 
+-    gl.disable(gl.STENCIL_TEST);
++      //Connect to cell
++      vverts[i] = -1
++      vadj[i] = cell
++      cellAdj[i] = ncell
+ 
+-    // We need to draw the background in tiles in order to use calculatePosMatrix
+-    // which applies the projection matrix (transform.projMatrix). Otherwise
+-    // the depth and stencil buffers get into a bad state.
+-    // This can be refactored into a single draw call once earcut lands and
+-    // we don't have so much going on in the stencil buffer.
+-    var coords = pyramid.coveringTiles(transform);
+-    for (var c = 0; c < coords.length; c++) {
+-        var coord = coords[c];
+-        var tileSize = 512;
+-        // var pixelsToTileUnitsBound = pixelsToTileUnits.bind({coord:coord, tileSize: tileSize});
+-        if (imagePosA && imagePosB) {
+-            var imageSizeScaledA = [
+-                (imagePosA.size[0] * image.fromScale),
+-                (imagePosA.size[1] * image.fromScale)
+-            ];
+-            var imageSizeScaledB = [
+-                (imagePosB.size[0] * image.toScale),
+-                (imagePosB.size[1] * image.toScale)
+-            ];
+-            var tile = {coord:coord, tileSize: tileSize};
++      //Flip facet
++      ncell.flip()
+ 
+-            gl.uniform2fv(program.u_patternscale_a, [
+-                1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
+-                1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
+-            ]);
++      //Add to glue list
++      for(var j=0; j<=d; ++j) {
++        var uu = vverts[j]
++        if(uu < 0 || uu === n) {
++          continue
++        }
++        var nface = new Array(d-1)
++        var nptr = 0
++        for(var k=0; k<=d; ++k) {
++          var vv = vverts[k]
++          if(vv < 0 || k === j) {
++            continue
++          }
++          nface[nptr++] = vv
++        }
++        glueFacets.push(new GlueFacet(nface, ncell, j))
++      }
++    }
++  }
+ 
+-            gl.uniform2fv(program.u_patternscale_b, [
+-                1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
+-                1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
+-            ]);
+-            var tileSizeAtNearestZoom = tileSize * Math.pow(2, painter.transform.tileZoom - coord.z);
++  //Glue boundary facets together
++  glueFacets.sort(compareGlue)
+ 
+-            var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
+-            var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * coord.y;
++  for(var i=0; i+1<glueFacets.length; i+=2) {
++    var a = glueFacets[i]
++    var b = glueFacets[i+1]
++    var ai = a.index
++    var bi = b.index
++    if(ai < 0 || bi < 0) {
++      continue
++    }
++    a.cell.adjacent[a.index] = b.cell
++    b.cell.adjacent[b.index] = a.cell
++  }
++}
+ 
+-            var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
+-            var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * coord.y;
++proto.insert = function(point, random) {
++  //Add point
++  var verts = this.vertices
++  verts.push(point)
+ 
+-            gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
+-            gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
+-        }
++  var cell = this.walk(point, random)
++  if(!cell) {
++    return
++  }
+ 
+-        gl.uniformMatrix4fv(program.u_matrix, false, painter.transform.calculatePosMatrix(coord));
+-        gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
++  //Alias local properties
++  var d = this.dimension
++  var tuple = this.tuple
++
++  //Degenerate case: If point is coplanar to cell, then walk until we find a non-degenerate boundary
++  for(var i=0; i<=d; ++i) {
++    var vv = cell.vertices[i]
++    if(vv < 0) {
++      tuple[i] = point
++    } else {
++      tuple[i] = verts[vv]
++    }
++  }
++  var o = this.orient(tuple)
++  if(o < 0) {
++    return
++  } else if(o === 0) {
++    cell = this.handleBoundaryDegeneracy(cell, point)
++    if(!cell) {
++      return
+     }
++  }
+ 
+-    gl.stencilMask(0x00);
+-    gl.stencilFunc(gl.EQUAL, 0x80, 0x80);
++  //Add peaks
++  this.addPeaks(point, cell)
+ }
+ 
+-},{"../source/pixels_to_tile_units":277,"../source/tile_pyramid":282,"../util/util":349}],262:[function(require,module,exports){
+-'use strict';
+-
+-var browser = require('../util/browser');
+-
+-module.exports = drawCircles;
+-
+-function drawCircles(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
++//Extract all boundary cells
++proto.boundary = function() {
++  var d = this.dimension
++  var boundary = []
++  var cells = this.simplices
++  var nc = cells.length
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    if(c.boundary) {
++      var bcell = new Array(d)
++      var cv = c.vertices
++      var ptr = 0
++      var parity = 0
++      for(var j=0; j<=d; ++j) {
++        if(cv[j] >= 0) {
++          bcell[ptr++] = cv[j]
++        } else {
++          parity = j&1
++        }
++      }
++      if(parity === (d&1)) {
++        var t = bcell[0]
++        bcell[0] = bcell[1]
++        bcell[1] = t
++      }
++      boundary.push(bcell)
++    }
++  }
++  return boundary
++}
+ 
+-    var gl = painter.gl;
++function incrementalConvexHull(points, randomSearch) {
++  var n = points.length
++  if(n === 0) {
++    throw new Error("Must have at least d+1 points")
++  }
++  var d = points[0].length
++  if(n <= d) {
++    throw new Error("Must input at least d+1 points")
++  }
+ 
+-    painter.setDepthSublayer(0);
+-    painter.depthMask(false);
++  //FIXME: This could be degenerate, but need to select d+1 non-coplanar points to bootstrap process
++  var initialSimplex = points.slice(0, d+1)
+ 
+-    // Allow circles to be drawn across boundaries, so that
+-    // large circles are not clipped to tiles
+-    gl.disable(gl.STENCIL_TEST);
++  //Make sure initial simplex is positively oriented
++  var o = orient.apply(void 0, initialSimplex)
++  if(o === 0) {
++    throw new Error("Input not in general position")
++  }
++  var initialCoords = new Array(d+1)
++  for(var i=0; i<=d; ++i) {
++    initialCoords[i] = i
++  }
++  if(o < 0) {
++    initialCoords[0] = 1
++    initialCoords[1] = 0
++  }
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
++  //Create initial topological index, glue pointers together (kind of messy)
++  var initialCell = new Simplex(initialCoords, new Array(d+1), false)
++  var boundary = initialCell.adjacent
++  var list = new Array(d+2)
++  for(var i=0; i<=d; ++i) {
++    var verts = initialCoords.slice()
++    for(var j=0; j<=d; ++j) {
++      if(j === i) {
++        verts[j] = -1
++      }
++    }
++    var t = verts[0]
++    verts[0] = verts[1]
++    verts[1] = t
++    var cell = new Simplex(verts, new Array(d+1), true)
++    boundary[i] = cell
++    list[i] = cell
++  }
++  list[d+1] = initialCell
++  for(var i=0; i<=d; ++i) {
++    var verts = boundary[i].vertices
++    var adj = boundary[i].adjacent
++    for(var j=0; j<=d; ++j) {
++      var v = verts[j]
++      if(v < 0) {
++        adj[j] = initialCell
++        continue
++      }
++      for(var k=0; k<=d; ++k) {
++        if(boundary[k].vertices.indexOf(v) < 0) {
++          adj[j] = boundary[k]
++        }
++      }
++    }
++  }
+ 
+-        var tile = source.getTile(coord);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bufferGroups = bucket.bufferGroups.circle;
+-        if (!bufferGroups) continue;
++  //Initialize triangles
++  var triangles = new Triangulation(d, initialSimplex, list)
+ 
+-        var program = painter.useProgram('circle', bucket.getProgramMacros('circle', layer));
++  //Insert remaining points
++  var useRandom = !!randomSearch
++  for(var i=d+1; i<n; ++i) {
++    triangles.insert(points[i], useRandom)
++  }
++  
++  //Extract boundary cells
++  return triangles.boundary()
++}
++},{"robust-orientation":418,"simplicial-complex":429}],225:[function(require,module,exports){
++"use strict"
+ 
+-        gl.uniform2fv(program.u_extrude_scale, painter.transform.pixelsToGLUnits);
+-        gl.uniform1f(program.u_blur, layer.paint['circle-blur']);
+-        gl.uniform1f(program.u_devicepixelratio, browser.devicePixelRatio);
+-        gl.uniform1f(program.u_opacity, layer.paint['circle-opacity']);
++var bounds = require("binary-search-bounds")
+ 
+-        gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
+-            coord.posMatrix,
+-            tile,
+-            layer.paint['circle-translate'],
+-            layer.paint['circle-translate-anchor']
+-        ));
++var NOT_FOUND = 0
++var SUCCESS = 1
++var EMPTY = 2
+ 
+-        bucket.setUniforms(gl, 'circle', program, layer, {zoom: painter.transform.zoom});
++module.exports = createWrapper
+ 
+-        for (var k = 0; k < bufferGroups.length; k++) {
+-            var group = bufferGroups[k];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element, group.paint[layer.id]);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-        }
+-    }
++function IntervalTreeNode(mid, left, right, leftPoints, rightPoints) {
++  this.mid = mid
++  this.left = left
++  this.right = right
++  this.leftPoints = leftPoints
++  this.rightPoints = rightPoints
++  this.count = (left ? left.count : 0) + (right ? right.count : 0) + leftPoints.length
+ }
+ 
+-},{"../util/browser":335}],263:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = drawCollisionDebug;
++var proto = IntervalTreeNode.prototype
+ 
+-function drawCollisionDebug(painter, source, layer, coords) {
+-    var gl = painter.gl;
+-    gl.enable(gl.STENCIL_TEST);
+-    var program = painter.useProgram('collisionbox');
++function copy(a, b) {
++  a.mid = b.mid
++  a.left = b.left
++  a.right = b.right
++  a.leftPoints = b.leftPoints
++  a.rightPoints = b.rightPoints
++  a.count = b.count
++}
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
+-        var tile = source.getTile(coord);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bufferGroups = bucket.bufferGroups.collisionBox;
++function rebuild(node, intervals) {
++  var ntree = createIntervalTree(intervals)
++  node.mid = ntree.mid
++  node.left = ntree.left
++  node.right = ntree.right
++  node.leftPoints = ntree.leftPoints
++  node.rightPoints = ntree.rightPoints
++  node.count = ntree.count
++}
+ 
+-        if (!bufferGroups || !bufferGroups.length) continue;
+-        var group = bufferGroups[0];
+-        if (group.layout.vertex.length === 0) continue;
++function rebuildWithInterval(node, interval) {
++  var intervals = node.intervals([])
++  intervals.push(interval)
++  rebuild(node, intervals)    
++}
+ 
+-        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
++function rebuildWithoutInterval(node, interval) {
++  var intervals = node.intervals([])
++  var idx = intervals.indexOf(interval)
++  if(idx < 0) {
++    return NOT_FOUND
++  }
++  intervals.splice(idx, 1)
++  rebuild(node, intervals)
++  return SUCCESS
++}
+ 
+-        painter.enableTileClippingMask(coord);
++proto.intervals = function(result) {
++  result.push.apply(result, this.leftPoints)
++  if(this.left) {
++    this.left.intervals(result)
++  }
++  if(this.right) {
++    this.right.intervals(result)
++  }
++  return result
++}
+ 
+-        painter.lineWidth(1);
+-        gl.uniform1f(program.u_scale, Math.pow(2, painter.transform.zoom - tile.coord.z));
+-        gl.uniform1f(program.u_zoom, painter.transform.zoom * 10);
+-        gl.uniform1f(program.u_maxzoom, (tile.coord.z + 1) * 10);
++proto.insert = function(interval) {
++  var weight = this.count - this.leftPoints.length
++  this.count += 1
++  if(interval[1] < this.mid) {
++    if(this.left) {
++      if(4*(this.left.count+1) > 3*(weight+1)) {
++        rebuildWithInterval(this, interval)
++      } else {
++        this.left.insert(interval)
++      }
++    } else {
++      this.left = createIntervalTree([interval])
++    }
++  } else if(interval[0] > this.mid) {
++    if(this.right) {
++      if(4*(this.right.count+1) > 3*(weight+1)) {
++        rebuildWithInterval(this, interval)
++      } else {
++        this.right.insert(interval)
++      }
++    } else {
++      this.right = createIntervalTree([interval])
++    }
++  } else {
++    var l = bounds.ge(this.leftPoints, interval, compareBegin)
++    var r = bounds.ge(this.rightPoints, interval, compareEnd)
++    this.leftPoints.splice(l, 0, interval)
++    this.rightPoints.splice(r, 0, interval)
++  }
++}
+ 
+-        group.vaos[layer.id].bind(gl, program, group.layout.vertex);
+-        gl.drawArrays(gl.LINES, 0, group.layout.vertex.length);
++proto.remove = function(interval) {
++  var weight = this.count - this.leftPoints
++  if(interval[1] < this.mid) {
++    if(!this.left) {
++      return NOT_FOUND
++    }
++    var rw = this.right ? this.right.count : 0
++    if(4 * rw > 3 * (weight-1)) {
++      return rebuildWithoutInterval(this, interval)
++    }
++    var r = this.left.remove(interval)
++    if(r === EMPTY) {
++      this.left = null
++      this.count -= 1
++      return SUCCESS
++    } else if(r === SUCCESS) {
++      this.count -= 1
++    }
++    return r
++  } else if(interval[0] > this.mid) {
++    if(!this.right) {
++      return NOT_FOUND
++    }
++    var lw = this.left ? this.left.count : 0
++    if(4 * lw > 3 * (weight-1)) {
++      return rebuildWithoutInterval(this, interval)
++    }
++    var r = this.right.remove(interval)
++    if(r === EMPTY) {
++      this.right = null
++      this.count -= 1
++      return SUCCESS
++    } else if(r === SUCCESS) {
++      this.count -= 1
++    }
++    return r
++  } else {
++    if(this.count === 1) {
++      if(this.leftPoints[0] === interval) {
++        return EMPTY
++      } else {
++        return NOT_FOUND
++      }
++    }
++    if(this.leftPoints.length === 1 && this.leftPoints[0] === interval) {
++      if(this.left && this.right) {
++        var p = this
++        var n = this.left
++        while(n.right) {
++          p = n
++          n = n.right
++        }
++        if(p === this) {
++          n.right = this.right
++        } else {
++          var l = this.left
++          var r = this.right
++          p.count -= n.count
++          p.right = n.left
++          n.left = l
++          n.right = r
++        }
++        copy(this, n)
++        this.count = (this.left?this.left.count:0) + (this.right?this.right.count:0) + this.leftPoints.length
++      } else if(this.left) {
++        copy(this, this.left)
++      } else {
++        copy(this, this.right)
++      }
++      return SUCCESS
++    }
++    for(var l = bounds.ge(this.leftPoints, interval, compareBegin); l<this.leftPoints.length; ++l) {
++      if(this.leftPoints[l][0] !== interval[0]) {
++        break
++      }
++      if(this.leftPoints[l] === interval) {
++        this.count -= 1
++        this.leftPoints.splice(l, 1)
++        for(var r = bounds.ge(this.rightPoints, interval, compareEnd); r<this.rightPoints.length; ++r) {
++          if(this.rightPoints[r][1] !== interval[1]) {
++            break
++          } else if(this.rightPoints[r] === interval) {
++            this.rightPoints.splice(r, 1)
++            return SUCCESS
++          }
++        }
++      }
+     }
++    return NOT_FOUND
++  }
+ }
+ 
+-},{}],264:[function(require,module,exports){
+-'use strict';
+-
+-var textVertices = require('../lib/debugtext');
+-var browser = require('../util/browser');
+-var mat4 = require('gl-matrix').mat4;
+-var EXTENT = require('../data/bucket').EXTENT;
+-var Buffer = require('../data/buffer');
+-var VertexArrayObject = require('./vertex_array_object');
+-
+-module.exports = drawDebug;
+-
+-function drawDebug(painter, source, coords) {
+-    if (painter.isOpaquePass) return;
+-    if (!painter.options.debug) return;
+-
+-    for (var i = 0; i < coords.length; i++) {
+-        drawDebugTile(painter, source, coords[i]);
+-    }
++function reportLeftRange(arr, hi, cb) {
++  for(var i=0; i<arr.length && arr[i][0] <= hi; ++i) {
++    var r = cb(arr[i])
++    if(r) { return r }
++  }
+ }
+ 
+-function drawDebugTile(painter, source, coord) {
+-    var gl = painter.gl;
+-
+-    gl.disable(gl.STENCIL_TEST);
+-    painter.lineWidth(1 * browser.devicePixelRatio);
+-
+-    var posMatrix = coord.posMatrix;
+-    var program = painter.useProgram('debug');
++function reportRightRange(arr, lo, cb) {
++  for(var i=arr.length-1; i>=0 && arr[i][1] >= lo; --i) {
++    var r = cb(arr[i])
++    if(r) { return r }
++  }
++}
+ 
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+-    gl.uniform4f(program.u_color, 1, 0, 0, 1);
+-    painter.debugVAO.bind(gl, program, painter.debugBuffer);
+-    gl.drawArrays(gl.LINE_STRIP, 0, painter.debugBuffer.length);
++function reportRange(arr, cb) {
++  for(var i=0; i<arr.length; ++i) {
++    var r = cb(arr[i])
++    if(r) { return r }
++  }
++}
+ 
+-    var vertices = textVertices(coord.toString(), 50, 200, 5);
+-    var debugTextArray = new painter.PosArray();
+-    for (var v = 0; v < vertices.length; v += 2) {
+-        debugTextArray.emplaceBack(vertices[v], vertices[v + 1]);
++proto.queryPoint = function(x, cb) {
++  if(x < this.mid) {
++    if(this.left) {
++      var r = this.left.queryPoint(x, cb)
++      if(r) { return r }
+     }
+-    var debugTextBuffer = new Buffer(debugTextArray.serialize(), painter.PosArray.serialize(), Buffer.BufferType.VERTEX);
+-    var debugTextVAO = new VertexArrayObject();
+-    debugTextVAO.bind(gl, program, debugTextBuffer);
+-    gl.uniform4f(program.u_color, 1, 1, 1, 1);
+-
+-    // Draw the halo with multiple 1px lines instead of one wider line because
+-    // the gl spec doesn't guarantee support for lines with width > 1.
+-    var tileSize = source.getTile(coord).tileSize;
+-    var onePixel = EXTENT / (Math.pow(2, painter.transform.zoom - coord.z) * tileSize);
+-    var translations = [[-1, -1], [-1, 1], [1, -1], [1, 1]];
+-    for (var i = 0; i < translations.length; i++) {
+-        var translation = translations[i];
+-        gl.uniformMatrix4fv(program.u_matrix, false, mat4.translate([], posMatrix, [onePixel * translation[0], onePixel * translation[1], 0]));
+-        gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
++    return reportLeftRange(this.leftPoints, x, cb)
++  } else if(x > this.mid) {
++    if(this.right) {
++      var r = this.right.queryPoint(x, cb)
++      if(r) { return r }
+     }
++    return reportRightRange(this.rightPoints, x, cb)
++  } else {
++    return reportRange(this.leftPoints, cb)
++  }
++}
+ 
+-    gl.uniform4f(program.u_color, 0, 0, 0, 1);
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+-    gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
++proto.queryInterval = function(lo, hi, cb) {
++  if(lo < this.mid && this.left) {
++    var r = this.left.queryInterval(lo, hi, cb)
++    if(r) { return r }
++  }
++  if(hi > this.mid && this.right) {
++    var r = this.right.queryInterval(lo, hi, cb)
++    if(r) { return r }
++  }
++  if(hi < this.mid) {
++    return reportLeftRange(this.leftPoints, hi, cb)
++  } else if(lo > this.mid) {
++    return reportRightRange(this.rightPoints, lo, cb)
++  } else {
++    return reportRange(this.leftPoints, cb)
++  }
+ }
+ 
+-},{"../data/bucket":247,"../data/buffer":252,"../lib/debugtext":259,"../util/browser":335,"./vertex_array_object":273,"gl-matrix":363}],265:[function(require,module,exports){
+-'use strict';
++function compareNumbers(a, b) {
++  return a - b
++}
+ 
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++function compareBegin(a, b) {
++  var d = a[0] - b[0]
++  if(d) { return d }
++  return a[1] - b[1]
++}
+ 
+-module.exports = draw;
++function compareEnd(a, b) {
++  var d = a[1] - b[1]
++  if(d) { return d }
++  return a[0] - b[0]
++}
+ 
+-function draw(painter, source, layer, coords) {
+-    var gl = painter.gl;
+-    gl.enable(gl.STENCIL_TEST);
++function createIntervalTree(intervals) {
++  if(intervals.length === 0) {
++    return null
++  }
++  var pts = []
++  for(var i=0; i<intervals.length; ++i) {
++    pts.push(intervals[i][0], intervals[i][1])
++  }
++  pts.sort(compareNumbers)
+ 
+-    var color = util.premultiply(layer.paint['fill-color']);
+-    var image = layer.paint['fill-pattern'];
+-    var strokeColor = util.premultiply(layer.paint['fill-outline-color']);
+-    var opacity = layer.paint['fill-opacity'];
++  var mid = pts[pts.length>>1]
+ 
+-    // Draw fill
+-    if (image ? !painter.isOpaquePass : painter.isOpaquePass === (color[3] === 1 && opacity === 1)) {
+-        // Once we switch to earcut drawing we can pull most of the WebGL setup
+-        // outside of this coords loop.
+-        for (var i = 0; i < coords.length; i++) {
+-            drawFill(painter, source, layer, coords[i]);
+-        }
++  var leftIntervals = []
++  var rightIntervals = []
++  var centerIntervals = []
++  for(var i=0; i<intervals.length; ++i) {
++    var s = intervals[i]
++    if(s[1] < mid) {
++      leftIntervals.push(s)
++    } else if(mid < s[0]) {
++      rightIntervals.push(s)
++    } else {
++      centerIntervals.push(s)
+     }
++  }
+ 
+-    // Draw stroke
+-    if (!painter.isOpaquePass && layer.paint['fill-antialias']) {
+-        if (strokeColor || !layer.paint['fill-pattern']) {
+-            var outlineProgram = painter.useProgram('outline');
+-            painter.lineWidth(2);
+-            painter.depthMask(false);
+-
+-            if (strokeColor) {
+-                // If we defined a different color for the fill outline, we are
+-                // going to ignore the bits in 0x07 and just care about the global
+-                // clipping mask.
+-                painter.setDepthSublayer(2);
+-            } else {
+-                // Otherwise, we only want to drawFill the antialiased parts that are
+-                // *outside* the current shape. This is important in case the fill
+-                // or stroke color is translucent. If we wouldn't clip to outside
+-                // the current shape, some pixels from the outline stroke overlapped
+-                // the (non-antialiased) fill.
+-                painter.setDepthSublayer(0);
+-            }
+-            gl.uniform2f(outlineProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
+-            gl.uniform4fv(outlineProgram.u_color, strokeColor ? strokeColor : color);
+-            gl.uniform1f(outlineProgram.u_opacity, opacity);
+-
+-            for (var j = 0; j < coords.length; j++) {
+-                drawStroke(painter, source, layer, coords[j]);
+-            }
+-        } else {
+-            var outlinePatternProgram = painter.useProgram('outlinepattern');
+-            painter.lineWidth(2);
+-            painter.depthMask(false);
+-            // Otherwise, we only want to drawFill the antialiased parts that are
+-            // *outside* the current shape. This is important in case the fill
+-            // or stroke color is translucent. If we wouldn't clip to outside
+-            // the current shape, some pixels from the outline stroke overlapped
+-            // the (non-antialiased) fill.
+-            painter.setDepthSublayer(0);
+-            gl.uniform2f(outlinePatternProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
+-
+-            for (var k = 0; k < coords.length; k++) {
+-                drawStroke(painter, source, layer, coords[k]);
+-            }
+-        }
++  //Split center intervals
++  var leftPoints = centerIntervals
++  var rightPoints = centerIntervals.slice()
++  leftPoints.sort(compareBegin)
++  rightPoints.sort(compareEnd)
+ 
+-    }
++  return new IntervalTreeNode(mid, 
++    createIntervalTree(leftIntervals),
++    createIntervalTree(rightIntervals),
++    leftPoints,
++    rightPoints)
+ }
+ 
+-function drawFill(painter, source, layer, coord) {
+-    var tile = source.getTile(coord);
+-    var bucket = tile.getBucket(layer);
+-    if (!bucket) return;
+-    var bufferGroups = bucket.bufferGroups.fill;
+-    if (!bufferGroups) return;
+-
+-    var gl = painter.gl;
+-
+-    var color = util.premultiply(layer.paint['fill-color']);
+-    var image = layer.paint['fill-pattern'];
+-    var opacity = layer.paint['fill-opacity'];
+-
+-    var posMatrix = coord.posMatrix;
+-    var translatedPosMatrix = painter.translatePosMatrix(posMatrix, tile, layer.paint['fill-translate'], layer.paint['fill-translate-anchor']);
+-
+-    // Draw the stencil mask.
+-    painter.setDepthSublayer(1);
+-
+-    // We're only drawFilling to the first seven bits (== support a maximum of
+-    // 8 overlapping polygons in one place before we get rendering errors).
+-    gl.stencilMask(0x07);
+-    gl.clear(gl.STENCIL_BUFFER_BIT);
+-
+-    // Draw front facing triangles. Wherever the 0x80 bit is 1, we are
+-    // increasing the lower 7 bits by one if the triangle is a front-facing
+-    // triangle. This means that all visible polygons should be in CCW
+-    // orientation, while all holes (see below) are in CW orientation.
+-    painter.enableTileClippingMask(coord);
+-
+-    // When we do a nonzero fill, we count the number of times a pixel is
+-    // covered by a counterclockwise polygon, and subtract the number of
+-    // times it is "uncovered" by a clockwise polygon.
+-    gl.stencilOpSeparate(gl.FRONT, gl.KEEP, gl.KEEP, gl.INCR_WRAP);
+-    gl.stencilOpSeparate(gl.BACK, gl.KEEP, gl.KEEP, gl.DECR_WRAP);
++//User friendly wrapper that makes it possible to support empty trees
++function IntervalTree(root) {
++  this.root = root
++}
+ 
+-    // When drawFilling a shape, we first drawFill all shapes to the stencil buffer
+-    // and incrementing all areas where polygons are
+-    gl.colorMask(false, false, false, false);
+-    painter.depthMask(false);
++var tproto = IntervalTree.prototype
+ 
+-    // Draw the actual triangle fan into the stencil buffer.
+-    var fillProgram = painter.useProgram('fill');
+-    gl.uniformMatrix4fv(fillProgram.u_matrix, false, translatedPosMatrix);
++tproto.insert = function(interval) {
++  if(this.root) {
++    this.root.insert(interval)
++  } else {
++    this.root = new IntervalTreeNode(interval[0], null, null, [interval], [interval])
++  }
++}
+ 
+-    for (var i = 0; i < bufferGroups.length; i++) {
+-        var group = bufferGroups[i];
+-        group.vaos[layer.id].bind(gl, fillProgram, group.layout.vertex, group.layout.element);
+-        gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++tproto.remove = function(interval) {
++  if(this.root) {
++    var r = this.root.remove(interval)
++    if(r === EMPTY) {
++      this.root = null
+     }
++    return r !== NOT_FOUND
++  }
++  return false
++}
+ 
+-    // Now that we have the stencil mask in the stencil buffer, we can start
+-    // writing to the color buffer.
+-    gl.colorMask(true, true, true, true);
+-    painter.depthMask(true);
+-
+-    // From now on, we don't want to update the stencil buffer anymore.
+-    gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
+-    gl.stencilMask(0x0);
+-    var program;
+-
+-    if (image) {
+-        // Draw texture fill
+-        program = painter.useProgram('pattern');
+-        setPattern(image, opacity, tile, coord, painter, program);
+-
+-        gl.activeTexture(gl.TEXTURE0);
+-        painter.spriteAtlas.bind(gl, true);
++tproto.queryPoint = function(p, cb) {
++  if(this.root) {
++    return this.root.queryPoint(p, cb)
++  }
++}
+ 
+-        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
++tproto.queryInterval = function(lo, hi, cb) {
++  if(lo <= hi && this.root) {
++    return this.root.queryInterval(lo, hi, cb)
++  }
++}
+ 
+-    } else {
+-        // Draw filling rectangle.
+-        program = painter.useProgram('fill');
+-        gl.uniform4fv(fillProgram.u_color, color);
+-        gl.uniform1f(fillProgram.u_opacity, opacity);
+-        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
++Object.defineProperty(tproto, "count", {
++  get: function() {
++    if(this.root) {
++      return this.root.count
+     }
++    return 0
++  }
++})
+ 
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+-
+-    // Only draw regions that we marked
+-    gl.stencilFunc(gl.NOTEQUAL, 0x0, 0x07);
+-
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
++Object.defineProperty(tproto, "intervals", {
++  get: function() {
++    if(this.root) {
++      return this.root.intervals([])
++    }
++    return []
++  }
++})
+ 
+-    gl.stencilMask(0x00);
++function createWrapper(intervals) {
++  if(!intervals || intervals.length === 0) {
++    return new IntervalTree(null)
++  }
++  return new IntervalTree(createIntervalTree(intervals))
+ }
+ 
+-function drawStroke(painter, source, layer, coord) {
+-    var tile = source.getTile(coord);
+-    var bucket = tile.getBucket(layer);
+-    if (!bucket) return;
++},{"binary-search-bounds":48}],226:[function(require,module,exports){
++"use strict"
+ 
+-    var gl = painter.gl;
+-    var bufferGroups = bucket.bufferGroups.fill;
++function invertPermutation(pi, result) {
++  result = result || new Array(pi.length)
++  for(var i=0; i<pi.length; ++i) {
++    result[pi[i]] = i
++  }
++  return result
++}
+ 
+-    var image = layer.paint['fill-pattern'];
+-    var opacity = layer.paint['fill-opacity'];
+-    var program = image ? painter.useProgram('outlinepattern') : painter.useProgram('outline');
++module.exports = invertPermutation
++},{}],227:[function(require,module,exports){
++"use strict"
+ 
+-    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
+-        coord.posMatrix,
+-        tile,
+-        layer.paint['fill-translate'],
+-        layer.paint['fill-translate-anchor']
+-    ));
++function iota(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = i
++  }
++  return result
++}
+ 
+-    if (image) { setPattern(image, opacity, tile, coord, painter, program); }
++module.exports = iota
++},{}],228:[function(require,module,exports){
++/*!
++ * Determine if an object is a Buffer
++ *
++ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
++ * @license  MIT
++ */
+ 
+-    painter.enableTileClippingMask(coord);
++// The _isBuffer check is for Safari 5-7 support, because it's missing
++// Object.prototype.constructor. Remove this eventually
++module.exports = function (obj) {
++  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
++}
+ 
+-    for (var k = 0; k < bufferGroups.length; k++) {
+-        var group = bufferGroups[k];
+-        group.secondVaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element2);
+-        gl.drawElements(gl.LINES, group.layout.element2.length * 2, gl.UNSIGNED_SHORT, 0);
+-    }
++function isBuffer (obj) {
++  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
+ }
+ 
++// For Node v0.10 support. Remove this eventually.
++function isSlowBuffer (obj) {
++  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
++}
+ 
+-function setPattern(image, opacity, tile, coord, painter, program) {
+-    var gl = painter.gl;
++},{}],229:[function(require,module,exports){
++'use strict';
+ 
+-    var imagePosA = painter.spriteAtlas.getPosition(image.from, true);
+-    var imagePosB = painter.spriteAtlas.getPosition(image.to, true);
+-    if (!imagePosA || !imagePosB) return;
++var sort = require('./sort');
++var range = require('./range');
++var within = require('./within');
+ 
++module.exports = kdbush;
+ 
+-    gl.uniform1i(program.u_image, 0);
+-    gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
+-    gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
+-    gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
+-    gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
+-    gl.uniform1f(program.u_opacity, opacity);
+-    gl.uniform1f(program.u_mix, image.t);
++function kdbush(points, getX, getY, nodeSize, ArrayType) {
++    return new KDBush(points, getX, getY, nodeSize, ArrayType);
++}
+ 
+-    var imageSizeScaledA = [
+-        (imagePosA.size[0] * image.fromScale),
+-        (imagePosA.size[1] * image.fromScale)
+-    ];
+-    var imageSizeScaledB = [
+-        (imagePosB.size[0] * image.toScale),
+-        (imagePosB.size[1] * image.toScale)
+-    ];
++function KDBush(points, getX, getY, nodeSize, ArrayType) {
++    getX = getX || defaultGetX;
++    getY = getY || defaultGetY;
++    ArrayType = ArrayType || Array;
+ 
+-    gl.uniform2fv(program.u_patternscale_a, [
+-        1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
+-        1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
+-    ]);
++    this.nodeSize = nodeSize || 64;
++    this.points = points;
+ 
+-    gl.uniform2fv(program.u_patternscale_b, [
+-        1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
+-        1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
+-    ]);
++    this.ids = new ArrayType(points.length);
++    this.coords = new ArrayType(points.length * 2);
+ 
+-    var tileSizeAtNearestZoom = tile.tileSize * Math.pow(2, painter.transform.tileZoom - tile.coord.z);
++    for (var i = 0; i < points.length; i++) {
++        this.ids[i] = i;
++        this.coords[2 * i] = getX(points[i]);
++        this.coords[2 * i + 1] = getY(points[i]);
++    }
+ 
+-    // shift images to match at tile boundaries
+-    var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
+-    var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * tile.coord.y;
++    sort(this.ids, this.coords, this.nodeSize, 0, this.ids.length - 1, 0);
++}
+ 
+-    var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
+-    var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * tile.coord.y;
++KDBush.prototype = {
++    range: function (minX, minY, maxX, maxY) {
++        return range(this.ids, this.coords, minX, minY, maxX, maxY, this.nodeSize);
++    },
+ 
+-    gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
+-    gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
++    within: function (x, y, r) {
++        return within(this.ids, this.coords, x, y, r, this.nodeSize);
++    }
++};
+ 
+-    gl.activeTexture(gl.TEXTURE0);
+-    painter.spriteAtlas.bind(gl, true);
+-}
++function defaultGetX(p) { return p[0]; }
++function defaultGetY(p) { return p[1]; }
+ 
+-},{"../source/pixels_to_tile_units":277,"../util/util":349}],266:[function(require,module,exports){
++},{"./range":230,"./sort":231,"./within":232}],230:[function(require,module,exports){
+ 'use strict';
+ 
+-var browser = require('../util/browser');
+-var mat2 = require('gl-matrix').mat2;
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+-
+-/**
+- * Draw a line. Under the hood this will read elements from
+- * a tile, dash textures from a lineAtlas, and style properties from a layer.
+- * @param {Object} painter
+- * @param {Object} layer
+- * @param {Object} posMatrix
+- * @param {Tile} tile
+- * @returns {undefined} draws with the painter
+- * @private
+- */
+-module.exports = function drawLine(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
+-    painter.setDepthSublayer(0);
+-    painter.depthMask(false);
+-
+-    var gl = painter.gl;
+-    gl.enable(gl.STENCIL_TEST);
++module.exports = range;
+ 
+-    // don't draw zero-width lines
+-    if (layer.paint['line-width'] <= 0) return;
++function range(ids, coords, minX, minY, maxX, maxY, nodeSize) {
++    var stack = [0, ids.length - 1, 0];
++    var result = [];
++    var x, y;
+ 
+-    // the distance over which the line edge fades out.
+-    // Retina devices need a smaller distance to avoid aliasing.
+-    var antialiasing = 1 / browser.devicePixelRatio;
++    while (stack.length) {
++        var axis = stack.pop();
++        var right = stack.pop();
++        var left = stack.pop();
+ 
+-    var blur = layer.paint['line-blur'] + antialiasing;
+-    var edgeWidth = layer.paint['line-width'] / 2;
+-    var inset = -1;
+-    var offset = 0;
+-    var shift = 0;
++        if (right - left <= nodeSize) {
++            for (var i = left; i <= right; i++) {
++                x = coords[2 * i];
++                y = coords[2 * i + 1];
++                if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[i]);
++            }
++            continue;
++        }
+ 
+-    if (layer.paint['line-gap-width'] > 0) {
+-        inset = layer.paint['line-gap-width'] / 2 + antialiasing * 0.5;
+-        edgeWidth = layer.paint['line-width'];
++        var m = Math.floor((left + right) / 2);
+ 
+-        // shift outer lines half a pixel towards the middle to eliminate the crack
+-        offset = inset - antialiasing / 2;
+-    }
++        x = coords[2 * m];
++        y = coords[2 * m + 1];
+ 
+-    var outset = offset + edgeWidth + antialiasing / 2 + shift;
+-    var color = util.premultiply(layer.paint['line-color']);
++        if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[m]);
+ 
+-    var tr = painter.transform;
++        var nextAxis = (axis + 1) % 2;
+ 
+-    var antialiasingMatrix = mat2.create();
+-    mat2.scale(antialiasingMatrix, antialiasingMatrix, [1, Math.cos(tr._pitch)]);
+-    mat2.rotate(antialiasingMatrix, antialiasingMatrix, painter.transform.angle);
++        if (axis === 0 ? minX <= x : minY <= y) {
++            stack.push(left);
++            stack.push(m - 1);
++            stack.push(nextAxis);
++        }
++        if (axis === 0 ? maxX >= x : maxY >= y) {
++            stack.push(m + 1);
++            stack.push(right);
++            stack.push(nextAxis);
++        }
++    }
+ 
+-    // calculate how much longer the real world distance is at the top of the screen
+-    // than at the middle of the screen.
+-    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
+-    var x = tr.height / 2 * Math.tan(tr._pitch);
+-    var extra = (topedgelength + x) / topedgelength - 1;
++    return result;
++}
+ 
+-    var dasharray = layer.paint['line-dasharray'];
+-    var image = layer.paint['line-pattern'];
+-    var program, posA, posB, imagePosA, imagePosB;
++},{}],231:[function(require,module,exports){
++'use strict';
+ 
+-    if (dasharray) {
+-        program = painter.useProgram('linesdfpattern');
++module.exports = sortKD;
+ 
+-        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
+-        gl.uniform1f(program.u_blur, blur);
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
++function sortKD(ids, coords, nodeSize, left, right, depth) {
++    if (right - left <= nodeSize) return;
+ 
+-        posA = painter.lineAtlas.getDash(dasharray.from, layer.layout['line-cap'] === 'round');
+-        posB = painter.lineAtlas.getDash(dasharray.to, layer.layout['line-cap'] === 'round');
++    var m = Math.floor((left + right) / 2);
+ 
+-        gl.uniform1i(program.u_image, 0);
+-        gl.activeTexture(gl.TEXTURE0);
+-        painter.lineAtlas.bind(gl);
++    select(ids, coords, m, left, right, depth % 2);
+ 
+-        gl.uniform1f(program.u_tex_y_a, posA.y);
+-        gl.uniform1f(program.u_tex_y_b, posB.y);
+-        gl.uniform1f(program.u_mix, dasharray.t);
+-        gl.uniform1f(program.u_extra, extra);
+-        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
+-        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
++    sortKD(ids, coords, nodeSize, left, m - 1, depth + 1);
++    sortKD(ids, coords, nodeSize, m + 1, right, depth + 1);
++}
+ 
+-    } else if (image) {
+-        imagePosA = painter.spriteAtlas.getPosition(image.from, true);
+-        imagePosB = painter.spriteAtlas.getPosition(image.to, true);
+-        if (!imagePosA || !imagePosB) return;
++function select(ids, coords, k, left, right, inc) {
+ 
+-        program = painter.useProgram('linepattern');
++    while (right > left) {
++        if (right - left > 600) {
++            var n = right - left + 1;
++            var m = k - left + 1;
++            var z = Math.log(n);
++            var s = 0.5 * Math.exp(2 * z / 3);
++            var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
++            var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
++            var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
++            select(ids, coords, k, newLeft, newRight, inc);
++        }
+ 
+-        gl.uniform1i(program.u_image, 0);
+-        gl.activeTexture(gl.TEXTURE0);
+-        painter.spriteAtlas.bind(gl, true);
++        var t = coords[2 * k + inc];
++        var i = left;
++        var j = right;
+ 
+-        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
+-        gl.uniform1f(program.u_blur, blur);
+-        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
+-        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
+-        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
+-        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
+-        gl.uniform1f(program.u_fade, image.t);
+-        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
+-        gl.uniform1f(program.u_extra, extra);
+-        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
+-        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
++        swapItem(ids, coords, left, k);
++        if (coords[2 * right + inc] > t) swapItem(ids, coords, left, right);
+ 
+-    } else {
+-        program = painter.useProgram('line');
++        while (i < j) {
++            swapItem(ids, coords, i, j);
++            i++;
++            j--;
++            while (coords[2 * i + inc] < t) i++;
++            while (coords[2 * j + inc] > t) j--;
++        }
+ 
+-        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
+-        gl.uniform1f(program.u_blur, blur);
+-        gl.uniform1f(program.u_extra, extra);
+-        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
+-        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
++        if (coords[2 * left + inc] === t) swapItem(ids, coords, left, j);
++        else {
++            j++;
++            swapItem(ids, coords, j, right);
++        }
++
++        if (j <= k) left = j + 1;
++        if (k <= j) right = j - 1;
+     }
++}
+ 
+-    for (var k = 0; k < coords.length; k++) {
+-        var coord = coords[k];
+-        var tile = source.getTile(coord);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bufferGroups = bucket.bufferGroups.line;
+-        if (!bufferGroups) continue;
++function swapItem(ids, coords, i, j) {
++    swap(ids, i, j);
++    swap(coords, 2 * i, 2 * j);
++    swap(coords, 2 * i + 1, 2 * j + 1);
++}
+ 
+-        painter.enableTileClippingMask(coord);
++function swap(arr, i, j) {
++    var tmp = arr[i];
++    arr[i] = arr[j];
++    arr[j] = tmp;
++}
+ 
+-        // set uniforms that are different for each tile
+-        var posMatrix = painter.translatePosMatrix(coord.posMatrix, tile, layer.paint['line-translate'], layer.paint['line-translate-anchor']);
+-        gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++},{}],232:[function(require,module,exports){
++'use strict';
+ 
+-        var ratio = 1 / pixelsToTileUnits(tile, 1, painter.transform.zoom);
++module.exports = within;
+ 
+-        if (dasharray) {
+-            var widthA = posA.width * dasharray.fromScale;
+-            var widthB = posB.width * dasharray.toScale;
+-            var scaleA = [1 / pixelsToTileUnits(tile, widthA, painter.transform.tileZoom), -posA.height / 2];
+-            var scaleB = [1 / pixelsToTileUnits(tile, widthB, painter.transform.tileZoom), -posB.height / 2];
+-            var gamma = painter.lineAtlas.width / (Math.min(widthA, widthB) * 256 * browser.devicePixelRatio) / 2;
+-            gl.uniform1f(program.u_ratio, ratio);
+-            gl.uniform2fv(program.u_patternscale_a, scaleA);
+-            gl.uniform2fv(program.u_patternscale_b, scaleB);
+-            gl.uniform1f(program.u_sdfgamma, gamma);
++function within(ids, coords, qx, qy, r, nodeSize) {
++    var stack = [0, ids.length - 1, 0];
++    var result = [];
++    var r2 = r * r;
+ 
+-        } else if (image) {
+-            gl.uniform1f(program.u_ratio, ratio);
+-            gl.uniform2fv(program.u_pattern_size_a, [
+-                pixelsToTileUnits(tile, imagePosA.size[0] * image.fromScale, painter.transform.tileZoom),
+-                imagePosB.size[1]
+-            ]);
+-            gl.uniform2fv(program.u_pattern_size_b, [
+-                pixelsToTileUnits(tile, imagePosB.size[0] * image.toScale, painter.transform.tileZoom),
+-                imagePosB.size[1]
+-            ]);
++    while (stack.length) {
++        var axis = stack.pop();
++        var right = stack.pop();
++        var left = stack.pop();
+ 
+-        } else {
+-            gl.uniform1f(program.u_ratio, ratio);
++        if (right - left <= nodeSize) {
++            for (var i = left; i <= right; i++) {
++                if (sqDist(coords[2 * i], coords[2 * i + 1], qx, qy) <= r2) result.push(ids[i]);
++            }
++            continue;
+         }
+ 
+-        for (var i = 0; i < bufferGroups.length; i++) {
+-            var group = bufferGroups[i];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++        var m = Math.floor((left + right) / 2);
++
++        var x = coords[2 * m];
++        var y = coords[2 * m + 1];
++
++        if (sqDist(x, y, qx, qy) <= r2) result.push(ids[m]);
++
++        var nextAxis = (axis + 1) % 2;
++
++        if (axis === 0 ? qx - r <= x : qy - r <= y) {
++            stack.push(left);
++            stack.push(m - 1);
++            stack.push(nextAxis);
++        }
++        if (axis === 0 ? qx + r >= x : qy + r >= y) {
++            stack.push(m + 1);
++            stack.push(right);
++            stack.push(nextAxis);
+         }
+     }
+ 
+-};
++    return result;
++}
+ 
+-},{"../source/pixels_to_tile_units":277,"../util/browser":335,"../util/util":349,"gl-matrix":363}],267:[function(require,module,exports){
+-'use strict';
++function sqDist(ax, ay, bx, by) {
++    var dx = ax - bx;
++    var dy = ay - by;
++    return dx * dx + dy * dy;
++}
+ 
+-var util = require('../util/util');
+-var StructArrayType = require('../util/struct_array');
++},{}],233:[function(require,module,exports){
++'use strict';
+ 
+-module.exports = drawRaster;
++function createFunction(parameters, defaultType) {
++    var fun;
+ 
+-function drawRaster(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
++    if (!isFunctionDefinition(parameters)) {
++        fun = function() { return parameters; };
++        fun.isFeatureConstant = true;
++        fun.isZoomConstant = true;
+ 
+-    var gl = painter.gl;
++    } else {
++        var zoomAndFeatureDependent = typeof parameters.stops[0][0] === 'object';
++        var featureDependent = zoomAndFeatureDependent || parameters.property !== undefined;
++        var zoomDependent = zoomAndFeatureDependent || !featureDependent;
++        var type = parameters.type || defaultType || 'exponential';
+ 
+-    gl.enable(gl.DEPTH_TEST);
+-    painter.depthMask(true);
++        var innerFun;
++        if (type === 'exponential') {
++            innerFun = evaluateExponentialFunction;
++        } else if (type === 'interval') {
++            innerFun = evaluateIntervalFunction;
++        } else if (type === 'categorical') {
++            innerFun = evaluateCategoricalFunction;
++        } else {
++            throw new Error('Unknown function type "' + type + '"');
++        }
+ 
+-    // Change depth function to prevent double drawing in areas where tiles overlap.
+-    gl.depthFunc(gl.LESS);
++        if (zoomAndFeatureDependent) {
++            var featureFunctions = {};
++            var featureFunctionStops = [];
++            for (var s = 0; s < parameters.stops.length; s++) {
++                var stop = parameters.stops[s];
++                if (featureFunctions[stop[0].zoom] === undefined) {
++                    featureFunctions[stop[0].zoom] = {
++                        zoom: stop[0].zoom,
++                        type: parameters.type,
++                        property: parameters.property,
++                        stops: []
++                    };
++                }
++                featureFunctions[stop[0].zoom].stops.push([stop[0].value, stop[1]]);
++            }
+ 
+-    var minTileZ = coords.length && coords[0].z;
++            for (var z in featureFunctions) {
++                featureFunctionStops.push([featureFunctions[z].zoom, createFunction(featureFunctions[z])]);
++            }
++            fun = function(zoom, feature) {
++                return evaluateExponentialFunction({ stops: featureFunctionStops, base: parameters.base }, zoom)(zoom, feature);
++            };
++            fun.isFeatureConstant = false;
++            fun.isZoomConstant = false;
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
+-        // set the lower zoom level to sublayer 0, and higher zoom levels to higher sublayers
+-        painter.setDepthSublayer(coord.z - minTileZ);
+-        drawRasterTile(painter, source, layer, coord);
++        } else if (zoomDependent) {
++            fun = function(zoom) {
++                return innerFun(parameters, zoom);
++            };
++            fun.isFeatureConstant = true;
++            fun.isZoomConstant = false;
++        } else {
++            fun = function(zoom, feature) {
++                return innerFun(parameters, feature[parameters.property]);
++            };
++            fun.isFeatureConstant = false;
++            fun.isZoomConstant = true;
++        }
+     }
+ 
+-    gl.depthFunc(gl.LEQUAL);
++    return fun;
+ }
+ 
+-drawRaster.RasterBoundsArray = new StructArrayType({
+-    members: [
+-        { name: 'a_pos', type: 'Int16', components: 2 },
+-        { name: 'a_texture_pos', type: 'Int16', components: 2 }
+-    ]
+-});
+-
+-function drawRasterTile(painter, source, layer, coord) {
++function evaluateCategoricalFunction(parameters, input) {
++    for (var i = 0; i < parameters.stops.length; i++) {
++        if (input === parameters.stops[i][0]) {
++            return parameters.stops[i][1];
++        }
++    }
++    return parameters.stops[0][1];
++}
+ 
+-    var gl = painter.gl;
++function evaluateIntervalFunction(parameters, input) {
++    for (var i = 0; i < parameters.stops.length; i++) {
++        if (input < parameters.stops[i][0]) break;
++    }
++    return parameters.stops[Math.max(i - 1, 0)][1];
++}
+ 
+-    gl.disable(gl.STENCIL_TEST);
++function evaluateExponentialFunction(parameters, input) {
++    var base = parameters.base !== undefined ? parameters.base : 1;
+ 
+-    var tile = source.getTile(coord);
+-    var posMatrix = painter.transform.calculatePosMatrix(coord, source.maxzoom);
++    var i = 0;
++    while (true) {
++        if (i >= parameters.stops.length) break;
++        else if (input <= parameters.stops[i][0]) break;
++        else i++;
++    }
+ 
+-    var program = painter.useProgram('raster');
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++    if (i === 0) {
++        return parameters.stops[i][1];
+ 
+-    // color parameters
+-    gl.uniform1f(program.u_brightness_low, layer.paint['raster-brightness-min']);
+-    gl.uniform1f(program.u_brightness_high, layer.paint['raster-brightness-max']);
+-    gl.uniform1f(program.u_saturation_factor, saturationFactor(layer.paint['raster-saturation']));
+-    gl.uniform1f(program.u_contrast_factor, contrastFactor(layer.paint['raster-contrast']));
+-    gl.uniform3fv(program.u_spin_weights, spinWeights(layer.paint['raster-hue-rotate']));
++    } else if (i === parameters.stops.length) {
++        return parameters.stops[i - 1][1];
+ 
+-    var parentTile = tile.source && tile.source._pyramid.findLoadedParent(coord, 0, {}),
+-        opacities = getOpacities(tile, parentTile, layer, painter.transform);
++    } else {
++        return interpolate(
++            input,
++            base,
++            parameters.stops[i - 1][0],
++            parameters.stops[i][0],
++            parameters.stops[i - 1][1],
++            parameters.stops[i][1]
++        );
++    }
++}
+ 
+-    var parentScaleBy, parentTL;
+ 
+-    gl.activeTexture(gl.TEXTURE0);
+-    gl.bindTexture(gl.TEXTURE_2D, tile.texture);
++function interpolate(input, base, inputLower, inputUpper, outputLower, outputUpper) {
++    if (typeof outputLower === 'function') {
++        return function() {
++            var evaluatedLower = outputLower.apply(undefined, arguments);
++            var evaluatedUpper = outputUpper.apply(undefined, arguments);
++            return interpolate(input, base, inputLower, inputUpper, evaluatedLower, evaluatedUpper);
++        };
++    } else if (outputLower.length) {
++        return interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper);
++    } else {
++        return interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper);
++    }
++}
+ 
+-    if (parentTile) {
+-        gl.activeTexture(gl.TEXTURE1);
+-        gl.bindTexture(gl.TEXTURE_2D, parentTile.texture);
++function interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper) {
++    var difference =  inputUpper - inputLower;
++    var progress = input - inputLower;
+ 
+-        parentScaleBy = Math.pow(2, parentTile.coord.z - tile.coord.z);
+-        parentTL = [tile.coord.x * parentScaleBy % 1, tile.coord.y * parentScaleBy % 1];
++    var ratio;
++    if (base === 1) {
++        ratio = progress / difference;
+     } else {
+-        opacities[1] = 0;
++        ratio = (Math.pow(base, progress) - 1) / (Math.pow(base, difference) - 1);
+     }
+ 
+-    // cross-fade parameters
+-    gl.uniform2fv(program.u_tl_parent, parentTL || [0, 0]);
+-    gl.uniform1f(program.u_scale_parent, parentScaleBy || 1);
+-    gl.uniform1f(program.u_buffer_scale, 1);
+-    gl.uniform1f(program.u_opacity0, opacities[0]);
+-    gl.uniform1f(program.u_opacity1, opacities[1]);
+-    gl.uniform1i(program.u_image0, 0);
+-    gl.uniform1i(program.u_image1, 1);
+-
+-    var buffer = tile.boundsBuffer || painter.rasterBoundsBuffer;
+-    var vao = tile.boundsVAO || painter.rasterBoundsVAO;
+-    vao.bind(gl, program, buffer);
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, buffer.length);
++    return (outputLower * (1 - ratio)) + (outputUpper * ratio);
+ }
+ 
+-function spinWeights(angle) {
+-    angle *= Math.PI / 180;
+-    var s = Math.sin(angle);
+-    var c = Math.cos(angle);
+-    return [
+-        (2 * c + 1) / 3,
+-        (-Math.sqrt(3) * s - c + 1) / 3,
+-        (Math.sqrt(3) * s - c + 1) / 3
+-    ];
++function interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper) {
++    var output = [];
++    for (var i = 0; i < outputLower.length; i++) {
++        output[i] = interpolateNumber(input, base, inputLower, inputUpper, outputLower[i], outputUpper[i]);
++    }
++    return output;
+ }
+ 
+-function contrastFactor(contrast) {
+-    return contrast > 0 ?
+-        1 / (1 - contrast) :
+-        1 + contrast;
++function isFunctionDefinition(value) {
++    return typeof value === 'object' && value.stops;
+ }
+ 
+-function saturationFactor(saturation) {
+-    return saturation > 0 ?
+-        1 - 1 / (1.001 - saturation) :
+-        -saturation;
+-}
+ 
+-function getOpacities(tile, parentTile, layer, transform) {
+-    var opacity = [1, 0];
+-    var fadeDuration = layer.paint['raster-fade-duration'];
++module.exports.isFunctionDefinition = isFunctionDefinition;
+ 
+-    if (tile.source && fadeDuration > 0) {
+-        var now = new Date().getTime();
++module.exports.interpolated = function(parameters) {
++    return createFunction(parameters, 'exponential');
++};
+ 
+-        var sinceTile = (now - tile.timeAdded) / fadeDuration;
+-        var sinceParent = parentTile ? (now - parentTile.timeAdded) / fadeDuration : -1;
++module.exports['piecewise-constant'] = function(parameters) {
++    return createFunction(parameters, 'interval');
++};
+ 
+-        var idealZ = tile.source._pyramid.coveringZoomLevel(transform);
+-        var parentFurther = parentTile ? Math.abs(parentTile.coord.z - idealZ) > Math.abs(tile.coord.z - idealZ) : false;
++},{}],234:[function(require,module,exports){
++'use strict';
+ 
+-        if (!parentTile || parentFurther) {
+-            // if no parent or parent is older
+-            opacity[0] = util.clamp(sinceTile, 0, 1);
+-            opacity[1] = 1 - opacity[0];
+-        } else {
+-            // parent is younger, zooming out
+-            opacity[0] = util.clamp(1 - sinceParent, 0, 1);
+-            opacity[1] = 1 - opacity[0];
+-        }
+-    }
++if (typeof module !== 'undefined' && module.exports) {
++    module.exports = isSupported;
++} else if (window) {
++    window.mapboxgl = window.mapboxgl || {};
++    window.mapboxgl.supported = isSupported;
++}
+ 
+-    var op = layer.paint['raster-opacity'];
+-    opacity[0] *= op;
+-    opacity[1] *= op;
++/**
++ * Test whether the current browser supports Mapbox GL JS
++ * @param {Object} options
++ * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
++ *   if the performance of Mapbox GL JS would be dramatically worse than
++ *   expected (i.e. a software renderer is would be used)
++ * @return {boolean}
++ */
++function isSupported(options) {
++    return !!(
++        isBrowser() &&
++        isArraySupported() &&
++        isFunctionSupported() &&
++        isObjectSupported() &&
++        isJSONSupported() &&
++        isWorkerSupported() &&
++        isWebGLSupportedCached(options && options.failIfMajorPerformanceCaveat)
++    );
++}
+ 
+-    return opacity;
++function isBrowser() {
++    return typeof window !== 'undefined' && typeof document !== 'undefined';
++}
++
++function isArraySupported() {
++    return (
++        Array.prototype &&
++        Array.prototype.every &&
++        Array.prototype.filter &&
++        Array.prototype.forEach &&
++        Array.prototype.indexOf &&
++        Array.prototype.lastIndexOf &&
++        Array.prototype.map &&
++        Array.prototype.some &&
++        Array.prototype.reduce &&
++        Array.prototype.reduceRight &&
++        Array.isArray
++    );
++}
++
++function isFunctionSupported() {
++    return Function.prototype && Function.prototype.bind;
++}
++
++function isObjectSupported() {
++    return (
++        Object.keys &&
++        Object.create &&
++        Object.getPrototypeOf &&
++        Object.getOwnPropertyNames &&
++        Object.isSealed &&
++        Object.isFrozen &&
++        Object.isExtensible &&
++        Object.getOwnPropertyDescriptor &&
++        Object.defineProperty &&
++        Object.defineProperties &&
++        Object.seal &&
++        Object.freeze &&
++        Object.preventExtensions
++    );
+ }
+ 
+-},{"../util/struct_array":347,"../util/util":349}],268:[function(require,module,exports){
+-'use strict';
+-
+-var browser = require('../util/browser');
+-var drawCollisionDebug = require('./draw_collision_debug');
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++function isJSONSupported() {
++    return 'JSON' in window && 'parse' in JSON && 'stringify' in JSON;
++}
+ 
++function isWorkerSupported() {
++    return 'Worker' in window;
++}
+ 
+-module.exports = drawSymbols;
++var isWebGLSupportedCache = {};
++function isWebGLSupportedCached(failIfMajorPerformanceCaveat) {
+ 
+-function drawSymbols(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
++    if (isWebGLSupportedCache[failIfMajorPerformanceCaveat] === undefined) {
++        isWebGLSupportedCache[failIfMajorPerformanceCaveat] = isWebGLSupported(failIfMajorPerformanceCaveat);
++    }
+ 
+-    var drawAcrossEdges = !(layer.layout['text-allow-overlap'] || layer.layout['icon-allow-overlap'] ||
+-        layer.layout['text-ignore-placement'] || layer.layout['icon-ignore-placement']);
++    return isWebGLSupportedCache[failIfMajorPerformanceCaveat];
++}
+ 
+-    var gl = painter.gl;
++isSupported.webGLContextAttributes = {
++    antialias: false,
++    alpha: true,
++    stencil: true,
++    depth: true
++};
+ 
+-    // Disable the stencil test so that labels aren't clipped to tile boundaries.
+-    //
+-    // Layers with features that may be drawn overlapping aren't clipped. These
+-    // layers are sorted in the y direction, and to draw the correct ordering near
+-    // tile edges the icons are included in both tiles and clipped when drawing.
+-    if (drawAcrossEdges) {
+-        gl.disable(gl.STENCIL_TEST);
+-    } else {
+-        gl.enable(gl.STENCIL_TEST);
+-    }
++function isWebGLSupported(failIfMajorPerformanceCaveat) {
+ 
+-    painter.setDepthSublayer(0);
+-    painter.depthMask(false);
+-    gl.disable(gl.DEPTH_TEST);
++    var canvas = document.createElement('canvas');
+ 
+-    drawLayerSymbols(painter, source, layer, coords, false,
+-            layer.paint['icon-translate'],
+-            layer.paint['icon-translate-anchor'],
+-            layer.layout['icon-rotation-alignment'],
+-            layer.layout['icon-size'],
+-            layer.paint['icon-halo-width'],
+-            layer.paint['icon-halo-color'],
+-            layer.paint['icon-halo-blur'],
+-            layer.paint['icon-opacity'],
+-            layer.paint['icon-color']);
++    var attributes = Object.create(isSupported.webGLContextAttributes);
++    attributes.failIfMajorPerformanceCaveat = failIfMajorPerformanceCaveat;
+ 
+-    drawLayerSymbols(painter, source, layer, coords, true,
+-            layer.paint['text-translate'],
+-            layer.paint['text-translate-anchor'],
+-            layer.layout['text-rotation-alignment'],
+-            layer.layout['text-size'],
+-            layer.paint['text-halo-width'],
+-            layer.paint['text-halo-color'],
+-            layer.paint['text-halo-blur'],
+-            layer.paint['text-opacity'],
+-            layer.paint['text-color']);
++    if (canvas.probablySupportsContext) {
++        return (
++            canvas.probablySupportsContext('webgl', attributes) ||
++            canvas.probablySupportsContext('experimental-webgl', attributes)
++        );
+ 
+-    gl.enable(gl.DEPTH_TEST);
++    } else if (canvas.supportsContext) {
++        return (
++            canvas.supportsContext('webgl', attributes) ||
++            canvas.supportsContext('experimental-webgl', attributes)
++        );
+ 
+-    drawCollisionDebug(painter, source, layer, coords);
++    } else {
++        return (
++            canvas.getContext('webgl', attributes) ||
++            canvas.getContext('experimental-webgl', attributes)
++        );
++    }
+ }
+ 
+-function drawLayerSymbols(painter, source, layer, coords, isText,
+-        translate,
+-        translateAnchor,
+-        rotationAlignment,
+-        size,
+-        haloWidth,
+-        haloColor,
+-        haloBlur,
+-        opacity,
+-        color) {
++},{}],235:[function(require,module,exports){
++'use strict';
+ 
+-    haloColor = util.premultiply(haloColor);
+-    color = util.premultiply(color);
++var format = require('util').format;
+ 
+-    for (var j = 0; j < coords.length; j++) {
+-        var tile = source.getTile(coords[j]);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bothBufferGroups = bucket.bufferGroups;
+-        var bufferGroups = isText ? bothBufferGroups.glyph : bothBufferGroups.icon;
+-        if (!bufferGroups.length) continue;
++function ValidationError(key, value /*, message, ...*/) {
++    this.message = (
++        (key ? key + ': ' : '') +
++        format.apply(format, Array.prototype.slice.call(arguments, 2))
++    );
+ 
+-        painter.enableTileClippingMask(coords[j]);
+-        drawSymbol(painter, layer, coords[j].posMatrix, tile, bucket, bufferGroups, isText,
+-                isText || bucket.sdfIcons, !isText && bucket.iconsNeedLinear,
+-                isText ? bucket.adjustedTextSize : bucket.adjustedIconSize, bucket.fontstack,
+-                translate,
+-                translateAnchor,
+-                rotationAlignment,
+-                size,
+-                haloWidth,
+-                haloColor,
+-                haloBlur,
+-                opacity,
+-                color);
++    if (value !== null && value !== undefined && value.__line__) {
++        this.line = value.__line__;
+     }
+ }
+ 
+-function drawSymbol(painter, layer, posMatrix, tile, bucket, bufferGroups, isText, sdf, iconsNeedLinear, adjustedSize, fontstack,
+-        translate,
+-        translateAnchor,
+-        rotationAlignment,
+-        size,
+-        haloWidth,
+-        haloColor,
+-        haloBlur,
+-        opacity,
+-        color) {
+-    var gl = painter.gl;
+-    var tr = painter.transform;
+-    var alignedWithMap = rotationAlignment === 'map';
++module.exports = ValidationError;
+ 
+-    var defaultSize = isText ? 24 : 1;
+-    var fontScale = size / defaultSize;
++},{"util":455}],236:[function(require,module,exports){
++'use strict';
+ 
+-    var extrudeScale, s, gammaScale;
+-    if (alignedWithMap) {
+-        s = pixelsToTileUnits(tile, 1, painter.transform.zoom) * fontScale;
+-        gammaScale = 1 / Math.cos(tr._pitch);
+-        extrudeScale = [s, s];
+-    } else {
+-        s = painter.transform.altitude * fontScale;
+-        gammaScale = 1;
+-        extrudeScale = [ tr.pixelsToGLUnits[0] * s, tr.pixelsToGLUnits[1] * s];
++module.exports = function (output) {
++    for (var i = 1; i < arguments.length; i++) {
++        var input = arguments[i];
++        for (var k in input) {
++            output[k] = input[k];
++        }
+     }
++    return output;
++};
+ 
+-    // calculate how much longer the real world distance is at the top of the screen
+-    // than at the middle of the screen.
+-    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
+-    var x = tr.height / 2 * Math.tan(tr._pitch);
+-    var extra = (topedgelength + x) / topedgelength - 1;
+-
+-    if (!isText && !painter.style.sprite.loaded())
+-        return;
+-
+-    var program = painter.useProgram(sdf ? 'sdf' : 'icon');
+-    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(posMatrix, tile, translate, translateAnchor));
+-    gl.uniform1i(program.u_skewed, alignedWithMap);
+-    gl.uniform1f(program.u_extra, extra);
+-    gl.uniform2fv(program.u_extrude_scale, extrudeScale);
+-
+-    gl.activeTexture(gl.TEXTURE0);
+-    gl.uniform1i(program.u_texture, 0);
+-
+-    if (isText) {
+-        // use the fonstack used when parsing the tile, not the fontstack
+-        // at the current zoom level (layout['text-font']).
+-        var glyphAtlas = fontstack && painter.glyphSource.getGlyphAtlas(fontstack);
+-        if (!glyphAtlas) return;
++},{}],237:[function(require,module,exports){
++'use strict';
+ 
+-        glyphAtlas.updateTexture(gl);
+-        gl.uniform2f(program.u_texsize, glyphAtlas.width / 4, glyphAtlas.height / 4);
++module.exports = function getType(val) {
++    if (val instanceof Number) {
++        return 'number';
++    } else if (val instanceof String) {
++        return 'string';
++    } else if (val instanceof Boolean) {
++        return 'boolean';
++    } else if (Array.isArray(val)) {
++        return 'array';
++    } else if (val === null) {
++        return 'null';
+     } else {
+-        var mapMoving = painter.options.rotating || painter.options.zooming;
+-        var iconScaled = fontScale !== 1 || browser.devicePixelRatio !== painter.spriteAtlas.pixelRatio || iconsNeedLinear;
+-        var iconTransformed = alignedWithMap || painter.transform.pitch;
+-        painter.spriteAtlas.bind(gl, sdf || mapMoving || iconScaled || iconTransformed);
+-        gl.uniform2f(program.u_texsize, painter.spriteAtlas.width / 4, painter.spriteAtlas.height / 4);
++        return typeof val;
+     }
++};
+ 
+-    // adjust min/max zooms for variable font sizes
+-    var zoomAdjust = Math.log(size / adjustedSize) / Math.LN2 || 0;
+-    gl.uniform1f(program.u_zoom, (painter.transform.zoom - zoomAdjust) * 10); // current zoom level
+-
+-    gl.activeTexture(gl.TEXTURE1);
+-    painter.frameHistory.bind(gl);
+-    gl.uniform1i(program.u_fadetexture, 1);
+-
+-    var group;
+-
+-    if (sdf) {
+-        var sdfPx = 8;
+-        var blurOffset = 1.19;
+-        var haloOffset = 6;
+-        var gamma = 0.105 * defaultSize / size / browser.devicePixelRatio;
+-
+-        if (haloWidth) {
+-            // Draw halo underneath the text.
+-            gl.uniform1f(program.u_gamma, (haloBlur * blurOffset / fontScale / sdfPx + gamma) * gammaScale);
+-            gl.uniform4fv(program.u_color, haloColor);
+-            gl.uniform1f(program.u_opacity, opacity);
+-            gl.uniform1f(program.u_buffer, (haloOffset - haloWidth / fontScale) / sdfPx);
+-
+-            for (var j = 0; j < bufferGroups.length; j++) {
+-                group = bufferGroups[j];
+-                group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-                gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-            }
+-        }
+-
+-        gl.uniform1f(program.u_gamma, gamma * gammaScale);
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, opacity);
+-        gl.uniform1f(program.u_buffer, (256 - 64) / 256);
+-
+-        for (var i = 0; i < bufferGroups.length; i++) {
+-            group = bufferGroups[i];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-        }
++},{}],238:[function(require,module,exports){
++'use strict';
+ 
++// Turn jsonlint-lines-primitives objects into primitive objects
++module.exports = function unbundle(value) {
++    if (value instanceof Number || value instanceof String || value instanceof Boolean) {
++        return value.valueOf();
+     } else {
+-        gl.uniform1f(program.u_opacity, opacity);
+-        for (var k = 0; k < bufferGroups.length; k++) {
+-            group = bufferGroups[k];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-        }
++        return value;
+     }
+-}
++};
+ 
+-},{"../source/pixels_to_tile_units":277,"../util/browser":335,"../util/util":349,"./draw_collision_debug":263}],269:[function(require,module,exports){
++},{}],239:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = FrameHistory;
+-
+-function FrameHistory() {
+-    this.changeTimes = new Float64Array(256);
+-    this.changeOpacities = new Uint8Array(256);
+-    this.opacities = new Uint8ClampedArray(256);
+-    this.array = new Uint8Array(this.opacities.buffer);
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var extend = require('../util/extend');
+ 
+-    this.fadeDuration = 300;
+-    this.previousZoom = 0;
+-    this.firstFrame = true;
+-}
++// Main recursive validation function. Tracks:
++//
++// - key: string representing location of validation in style tree. Used only
++//   for more informative error reporting.
++// - value: current value from style being evaluated. May be anything from a
++//   high level object that needs to be descended into deeper or a simple
++//   scalar value.
++// - valueSpec: current spec being evaluated. Tracks value.
+ 
+-FrameHistory.prototype.record = function(zoom) {
+-    var now = Date.now();
++module.exports = function validate(options) {
+ 
+-    if (this.firstFrame) {
+-        now = 0;
+-        this.firstFrame = false;
+-    }
++    var validateFunction = require('./validate_function');
++    var validateObject = require('./validate_object');
++    var VALIDATORS = {
++        '*': function() {
++            return [];
++        },
++        'array': require('./validate_array'),
++        'boolean': require('./validate_boolean'),
++        'number': require('./validate_number'),
++        'color': require('./validate_color'),
++        'constants': require('./validate_constants'),
++        'enum': require('./validate_enum'),
++        'filter': require('./validate_filter'),
++        'function': require('./validate_function'),
++        'layer': require('./validate_layer'),
++        'object': require('./validate_object'),
++        'source': require('./validate_source'),
++        'string': require('./validate_string')
++    };
+ 
+-    zoom = Math.floor(zoom * 10);
++    var value = options.value;
++    var valueSpec = options.valueSpec;
++    var key = options.key;
++    var styleSpec = options.styleSpec;
++    var style = options.style;
+ 
+-    var z;
+-    if (zoom < this.previousZoom) {
+-        for (z = zoom + 1; z <= this.previousZoom; z++) {
+-            this.changeTimes[z] = now;
+-            this.changeOpacities[z] = this.opacities[z];
+-        }
+-    } else {
+-        for (z = zoom; z > this.previousZoom; z--) {
+-            this.changeTimes[z] = now;
+-            this.changeOpacities[z] = this.opacities[z];
++    if (getType(value) === 'string' && value[0] === '@') {
++        if (styleSpec.$version > 7) {
++            return [new ValidationError(key, value, 'constants have been deprecated as of v8')];
+         }
+-    }
+-
+-    for (z = 0; z < 256; z++) {
+-        var timeSince = now - this.changeTimes[z];
+-        var opacityChange = timeSince / this.fadeDuration * 255;
+-        if (z <= zoom) {
+-            this.opacities[z] = this.changeOpacities[z] + opacityChange;
+-        } else {
+-            this.opacities[z] = this.changeOpacities[z] - opacityChange;
++        if (!(value in style.constants)) {
++            return [new ValidationError(key, value, 'constant "%s" not found', value)];
+         }
++        options = extend({}, options, { value: style.constants[value] });
+     }
+ 
+-    this.changed = true;
+-    this.previousZoom = zoom;
+-};
++    if (valueSpec.function && getType(value) === 'object') {
++        return validateFunction(options);
+ 
+-FrameHistory.prototype.bind = function(gl) {
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+-        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, 256, 1, 0, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
++    } else if (valueSpec.type && VALIDATORS[valueSpec.type]) {
++        return VALIDATORS[valueSpec.type](options);
+ 
+     } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        if (this.changed) {
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 256, 1, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
+-            this.changed = false;
+-        }
++        return validateObject(extend({}, options, {
++            valueSpec: valueSpec.type ? styleSpec[valueSpec.type] : valueSpec
++        }));
+     }
+ };
+ 
+-},{}],270:[function(require,module,exports){
++},{"../error/validation_error":235,"../util/extend":236,"../util/get_type":237,"./validate_array":240,"./validate_boolean":241,"./validate_color":242,"./validate_constants":243,"./validate_enum":244,"./validate_filter":245,"./validate_function":246,"./validate_layer":248,"./validate_number":250,"./validate_object":251,"./validate_source":253,"./validate_string":254}],240:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = LineAtlas;
+-
+-/**
+- * A LineAtlas lets us reuse rendered dashed lines
+- * by writing many of them to a texture and then fetching their positions
+- * using .getDash.
+- *
+- * @param {number} width
+- * @param {number} height
+- * @private
+- */
+-function LineAtlas(width, height) {
+-    this.width = width;
+-    this.height = height;
+-    this.nextRow = 0;
+-
+-    this.bytes = 4;
+-    this.data = new Uint8Array(this.width * this.height * this.bytes);
+-
+-    this.positions = {};
+-}
++var getType = require('../util/get_type');
++var validate = require('./validate');
++var ValidationError = require('../error/validation_error');
+ 
+-LineAtlas.prototype.setSprite = function(sprite) {
+-    this.sprite = sprite;
+-};
++module.exports = function validateArray(options) {
++    var array = options.value;
++    var arraySpec = options.valueSpec;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var key = options.key;
++    var validateArrayElement = options.arrayElementValidator || validate;
+ 
+-/**
+- * Get or create a dash line pattern.
+- *
+- * @param {Array<number>} dasharray
+- * @param {boolean} round whether to add circle caps in between dash segments
+- * @returns {Object} position of dash texture in { y, height, width }
+- * @private
+- */
+-LineAtlas.prototype.getDash = function(dasharray, round) {
+-    var key = dasharray.join(",") + round;
++    if (getType(array) !== 'array') {
++        return [new ValidationError(key, array, 'array expected, %s found', getType(array))];
++    }
+ 
+-    if (!this.positions[key]) {
+-        this.positions[key] = this.addDash(dasharray, round);
++    if (arraySpec.length && array.length !== arraySpec.length) {
++        return [new ValidationError(key, array, 'array length %d expected, length %d found', arraySpec.length, array.length)];
+     }
+-    return this.positions[key];
+-};
+ 
+-LineAtlas.prototype.addDash = function(dasharray, round) {
++    if (arraySpec['min-length'] && array.length < arraySpec['min-length']) {
++        return [new ValidationError(key, array, 'array length at least %d expected, length %d found', arraySpec['min-length'], array.length)];
++    }
+ 
+-    var n = round ? 7 : 0;
+-    var height = 2 * n + 1;
+-    var offset = 128;
++    var arrayElementSpec = {
++        "type": arraySpec.value
++    };
+ 
+-    if (this.nextRow + height > this.height) {
+-        console.warn('LineAtlas out of space');
+-        return null;
++    if (styleSpec.$version < 7) {
++        arrayElementSpec.function = arraySpec.function;
+     }
+ 
+-    var length = 0;
+-    for (var i = 0; i < dasharray.length; i++) {
+-        length += dasharray[i];
++    if (getType(arraySpec.value) === 'object') {
++        arrayElementSpec = arraySpec.value;
+     }
+ 
+-    var stretch = this.width / length;
+-    var halfWidth = stretch / 2;
++    var errors = [];
++    for (var i = 0; i < array.length; i++) {
++        errors = errors.concat(validateArrayElement({
++            array: array,
++            arrayIndex: i,
++            value: array[i],
++            valueSpec: arrayElementSpec,
++            style: style,
++            styleSpec: styleSpec,
++            key: key + '[' + i + ']'
++        }));
++    }
++    return errors;
++};
+ 
+-    // If dasharray has an odd length, both the first and last parts
+-    // are dashes and should be joined seamlessly.
+-    var oddLength = dasharray.length % 2 === 1;
++},{"../error/validation_error":235,"../util/get_type":237,"./validate":239}],241:[function(require,module,exports){
++'use strict';
+ 
+-    for (var y = -n; y <= n; y++) {
+-        var row = this.nextRow + n + y;
+-        var index = this.width * row;
++var getType = require('../util/get_type');
++var ValidationError = require('../error/validation_error');
+ 
+-        var left = oddLength ? -dasharray[dasharray.length - 1] : 0;
+-        var right = dasharray[0];
+-        var partIndex = 1;
++module.exports = function validateBoolean(options) {
++    var value = options.value;
++    var key = options.key;
++    var type = getType(value);
+ 
+-        for (var x = 0; x < this.width; x++) {
++    if (type !== 'boolean') {
++        return [new ValidationError(key, value, 'boolean expected, %s found', type)];
++    }
+ 
+-            while (right < x / stretch) {
+-                left = right;
+-                right = right + dasharray[partIndex];
++    return [];
++};
+ 
+-                if (oddLength && partIndex === dasharray.length - 1) {
+-                    right += dasharray[0];
+-                }
++},{"../error/validation_error":235,"../util/get_type":237}],242:[function(require,module,exports){
++'use strict';
+ 
+-                partIndex++;
+-            }
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var parseCSSColor = require('csscolorparser').parseCSSColor;
+ 
+-            var distLeft = Math.abs(x - left * stretch);
+-            var distRight = Math.abs(x - right * stretch);
+-            var dist = Math.min(distLeft, distRight);
+-            var inside = (partIndex % 2) === 1;
+-            var signedDistance;
++module.exports = function validateColor(options) {
++    var key = options.key;
++    var value = options.value;
++    var type = getType(value);
+ 
+-            if (round) {
+-                // Add circle caps
+-                var distMiddle = n ? y / n * (halfWidth + 1) : 0;
+-                if (inside) {
+-                    var distEdge = halfWidth - Math.abs(distMiddle);
+-                    signedDistance = Math.sqrt(dist * dist + distEdge * distEdge);
+-                } else {
+-                    signedDistance = halfWidth - Math.sqrt(dist * dist + distMiddle * distMiddle);
+-                }
+-            } else {
+-                signedDistance = (inside ? 1 : -1) * dist;
+-            }
++    if (type !== 'string') {
++        return [new ValidationError(key, value, 'color expected, %s found', type)];
++    }
+ 
+-            this.data[3 + (index + x) * 4] = Math.max(0, Math.min(255, signedDistance + offset));
+-        }
++    if (parseCSSColor(value) === null) {
++        return [new ValidationError(key, value, 'color expected, "%s" found', value)];
+     }
+ 
+-    var pos = {
+-        y: (this.nextRow + n + 0.5) / this.height,
+-        height: 2 * n / this.height,
+-        width: length
+-    };
++    return [];
++};
+ 
+-    this.nextRow += height;
+-    this.dirty = true;
++},{"../error/validation_error":235,"../util/get_type":237,"csscolorparser":84}],243:[function(require,module,exports){
++'use strict';
+ 
+-    return pos;
+-};
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
+ 
+-LineAtlas.prototype.bind = function(gl) {
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, this.width, this.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
++module.exports = function validateConstants(options) {
++    var key = options.key;
++    var constants = options.value;
++    var styleSpec = options.styleSpec;
+ 
++    if (styleSpec.$version > 7) {
++        if (constants) {
++            return [new ValidationError(key, constants, 'constants have been deprecated as of v8')];
++        } else {
++            return [];
++        }
+     } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        var type = getType(constants);
++        if (type !== 'object') {
++            return [new ValidationError(key, constants, 'object expected, %s found', type)];
++        }
+ 
+-        if (this.dirty) {
+-            this.dirty = false;
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
++        var errors = [];
++        for (var constantName in constants) {
++            if (constantName[0] !== '@') {
++                errors.push(new ValidationError(key + '.' + constantName, constants[constantName], 'constants must start with "@"'));
++            }
+         }
++        return errors;
+     }
++
+ };
+ 
+-},{}],271:[function(require,module,exports){
++},{"../error/validation_error":235,"../util/get_type":237}],244:[function(require,module,exports){
+ 'use strict';
+ 
+-var browser = require('../util/browser');
+-var mat4 = require('gl-matrix').mat4;
+-var FrameHistory = require('./frame_history');
+-var TilePyramid = require('../source/tile_pyramid');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+-var util = require('../util/util');
+-var StructArrayType = require('../util/struct_array');
+-var Buffer = require('../data/buffer');
+-var VertexArrayObject = require('./vertex_array_object');
+-var RasterBoundsArray = require('./draw_raster').RasterBoundsArray;
++var ValidationError = require('../error/validation_error');
++var unbundle = require('../util/unbundle_jsonlint');
+ 
+-module.exports = Painter;
++module.exports = function validateEnum(options) {
++    var key = options.key;
++    var value = options.value;
++    var valueSpec = options.valueSpec;
++    var errors = [];
+ 
+-/**
+- * Initialize a new painter object.
+- *
+- * @param {Canvas} gl an experimental-webgl drawing context
+- * @private
+- */
+-function Painter(gl, transform) {
+-    this.gl = gl;
+-    this.transform = transform;
++    if (valueSpec.values.indexOf(unbundle(value)) === -1) {
++        errors.push(new ValidationError(key, value, 'expected one of [%s], %s found', valueSpec.values.join(', '), value));
++    }
++    return errors;
++};
+ 
+-    this.reusableTextures = {};
+-    this.preFbos = {};
++},{"../error/validation_error":235,"../util/unbundle_jsonlint":238}],245:[function(require,module,exports){
++'use strict';
+ 
+-    this.frameHistory = new FrameHistory();
++var ValidationError = require('../error/validation_error');
++var validateEnum = require('./validate_enum');
++var getType = require('../util/get_type');
++var unbundle = require('../util/unbundle_jsonlint');
+ 
+-    this.setup();
++module.exports = function validateFilter(options) {
++    var value = options.value;
++    var key = options.key;
++    var styleSpec = options.styleSpec;
++    var type;
+ 
+-    // Within each layer there are multiple distinct z-planes that can be drawn to.
+-    // This is implemented using the WebGL depth buffer.
+-    this.numSublayers = TilePyramid.maxUnderzooming + TilePyramid.maxOverzooming + 1;
+-    this.depthEpsilon = 1 / Math.pow(2, 16);
++    var errors = [];
+ 
+-    this.lineWidthRange = gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE);
+-}
++    if (getType(value) !== 'array') {
++        return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
++    }
+ 
+-util.extend(Painter.prototype, require('./painter/use_program'));
++    if (value.length < 1) {
++        return [new ValidationError(key, value, 'filter array must have at least 1 element')];
++    }
+ 
+-/*
+- * Update the GL viewport, projection matrix, and transforms to compensate
+- * for a new width and height value.
+- */
+-Painter.prototype.resize = function(width, height) {
+-    var gl = this.gl;
++    errors = errors.concat(validateEnum({
++        key: key + '[0]',
++        value: value[0],
++        valueSpec: styleSpec.filter_operator,
++        style: options.style,
++        styleSpec: options.styleSpec
++    }));
+ 
+-    this.width = width * browser.devicePixelRatio;
+-    this.height = height * browser.devicePixelRatio;
+-    gl.viewport(0, 0, this.width, this.height);
++    switch (unbundle(value[0])) {
++        case '<':
++        case '<=':
++        case '>':
++        case '>=':
++            if (value.length >= 2 && value[1] == '$type') {
++                errors.push(new ValidationError(key, value, '"$type" cannot be use with operator "%s"', value[0]));
++            }
++        /* falls through */
++        case '==':
++        case '!=':
++            if (value.length != 3) {
++                errors.push(new ValidationError(key, value, 'filter array for operator "%s" must have 3 elements', value[0]));
++            }
++        /* falls through */
++        case 'in':
++        case '!in':
++            if (value.length >= 2) {
++                type = getType(value[1]);
++                if (type !== 'string') {
++                    errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
++                } else if (value[1][0] === '@') {
++                    errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
++                }
++            }
++            for (var i = 2; i < value.length; i++) {
++                type = getType(value[i]);
++                if (value[1] == '$type') {
++                    errors = errors.concat(validateEnum({
++                        key: key + '[' + i + ']',
++                        value: value[i],
++                        valueSpec: styleSpec.geometry_type,
++                        style: options.style,
++                        styleSpec: options.styleSpec
++                    }));
++                } else if (type === 'string' && value[i][0] === '@') {
++                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'filter value cannot be a constant'));
++                } else if (type !== 'string' && type !== 'number' && type !== 'boolean') {
++                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'string, number, or boolean expected, %s found', type));
++                }
++            }
++            break;
+ 
+-};
++        case 'any':
++        case 'all':
++        case 'none':
++            for (i = 1; i < value.length; i++) {
++                errors = errors.concat(validateFilter({
++                    key: key + '[' + i + ']',
++                    value: value[i],
++                    style: options.style,
++                    styleSpec: options.styleSpec
++                }));
++            }
++            break;
+ 
+-Painter.prototype.setup = function() {
+-    var gl = this.gl;
++        case 'has':
++        case '!has':
++            type = getType(value[1]);
++            if (value.length !== 2) {
++                errors.push(new ValidationError(key, value, 'filter array for "%s" operator must have 2 elements', value[0]));
++            } else if (type !== 'string') {
++                errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
++            } else if (value[1][0] === '@') {
++                errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
++            }
++            break;
+ 
+-    gl.verbose = true;
++    }
+ 
+-    // We are blending the new pixels *behind* the existing pixels. That way we can
+-    // draw front-to-back and use then stencil buffer to cull opaque pixels early.
+-    gl.enable(gl.BLEND);
+-    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
++    return errors;
++};
+ 
+-    gl.enable(gl.STENCIL_TEST);
++},{"../error/validation_error":235,"../util/get_type":237,"../util/unbundle_jsonlint":238,"./validate_enum":244}],246:[function(require,module,exports){
++'use strict';
+ 
+-    gl.enable(gl.DEPTH_TEST);
+-    gl.depthFunc(gl.LEQUAL);
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var validate = require('./validate');
++var validateObject = require('./validate_object');
++var validateArray = require('./validate_array');
++var validateNumber = require('./validate_number');
+ 
+-    this._depthMask = false;
+-    gl.depthMask(false);
++module.exports = function validateFunction(options) {
++    var functionValueSpec = options.valueSpec;
++    var stopKeyType;
+ 
+-    var PosArray = this.PosArray = new StructArrayType({
+-        members: [{ name: 'a_pos', type: 'Int16', components: 2 }]
++    var isPropertyFunction = options.value.property !== undefined || stopKeyType === 'object';
++    var isZoomFunction = options.value.property === undefined || stopKeyType === 'object';
++
++    var errors = validateObject({
++        key: options.key,
++        value: options.value,
++        valueSpec: options.styleSpec.function,
++        style: options.style,
++        styleSpec: options.styleSpec,
++        objectElementValidators: { stops: validateFunctionStops }
+     });
+ 
+-    var tileExtentArray = new PosArray();
+-    tileExtentArray.emplaceBack(0, 0);
+-    tileExtentArray.emplaceBack(EXTENT, 0);
+-    tileExtentArray.emplaceBack(0, EXTENT);
+-    tileExtentArray.emplaceBack(EXTENT, EXTENT);
+-    this.tileExtentBuffer = new Buffer(tileExtentArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
+-    this.tileExtentVAO = new VertexArrayObject();
+-    this.tileExtentPatternVAO = new VertexArrayObject();
++    if (options.styleSpec.$version >= 8) {
++       if (isPropertyFunction && !options.valueSpec['property-function']) {
++           errors.push(new ValidationError(options.key, options.value, 'property functions not supported'));
++       } else if (isZoomFunction && !options.valueSpec['zoom-function']) {
++           errors.push(new ValidationError(options.key, options.value, 'zoom functions not supported'));
++       }
++    }
+ 
+-    var debugArray = new PosArray();
+-    debugArray.emplaceBack(0, 0);
+-    debugArray.emplaceBack(EXTENT, 0);
+-    debugArray.emplaceBack(EXTENT, EXTENT);
+-    debugArray.emplaceBack(0, EXTENT);
+-    debugArray.emplaceBack(0, 0);
+-    this.debugBuffer = new Buffer(debugArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
+-    this.debugVAO = new VertexArrayObject();
++    return errors;
+ 
+-    var rasterBoundsArray = new RasterBoundsArray();
+-    rasterBoundsArray.emplaceBack(0, 0, 0, 0);
+-    rasterBoundsArray.emplaceBack(EXTENT, 0, 32767, 0);
+-    rasterBoundsArray.emplaceBack(0, EXTENT, 0, 32767);
+-    rasterBoundsArray.emplaceBack(EXTENT, EXTENT, 32767, 32767);
+-    this.rasterBoundsBuffer = new Buffer(rasterBoundsArray.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
+-    this.rasterBoundsVAO = new VertexArrayObject();
+-};
++    function validateFunctionStops(options) {
++        var errors = [];
++        var value = options.value;
+ 
+-/*
+- * Reset the color buffers of the drawing canvas.
+- */
+-Painter.prototype.clearColor = function() {
+-    var gl = this.gl;
+-    gl.clearColor(0, 0, 0, 0);
+-    gl.clear(gl.COLOR_BUFFER_BIT);
+-};
++        errors = errors.concat(validateArray({
++            key: options.key,
++            value: value,
++            valueSpec: options.valueSpec,
++            style: options.style,
++            styleSpec: options.styleSpec,
++            arrayElementValidator: validateFunctionStop
++        }));
+ 
+-/*
+- * Reset the drawing canvas by clearing the stencil buffer so that we can draw
+- * new tiles at the same location, while retaining previously drawn pixels.
+- */
+-Painter.prototype.clearStencil = function() {
+-    var gl = this.gl;
+-    gl.clearStencil(0x0);
+-    gl.stencilMask(0xFF);
+-    gl.clear(gl.STENCIL_BUFFER_BIT);
+-};
++        if (getType(value) === 'array' && value.length === 0) {
++            errors.push(new ValidationError(options.key, value, 'array must have at least one stop'));
++        }
+ 
+-Painter.prototype.clearDepth = function() {
+-    var gl = this.gl;
+-    gl.clearDepth(1);
+-    this.depthMask(true);
+-    gl.clear(gl.DEPTH_BUFFER_BIT);
+-};
++        return errors;
++    }
+ 
+-Painter.prototype._renderTileClippingMasks = function(coords) {
+-    var gl = this.gl;
+-    gl.colorMask(false, false, false, false);
+-    this.depthMask(false);
+-    gl.disable(gl.DEPTH_TEST);
+-    gl.enable(gl.STENCIL_TEST);
++    function validateFunctionStop(options) {
++        var errors = [];
++        var value = options.value;
++        var key = options.key;
+ 
+-    // Only write clipping IDs to the last 5 bits. The first three are used for drawing fills.
+-    gl.stencilMask(0xF8);
+-    // Tests will always pass, and ref value will be written to stencil buffer.
+-    gl.stencilOp(gl.KEEP, gl.KEEP, gl.REPLACE);
++        if (getType(value) !== 'array') {
++            return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
++        }
+ 
+-    var idNext = 1;
+-    this._tileClippingMaskIDs = {};
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
+-        var id = this._tileClippingMaskIDs[coord.id] = (idNext++) << 3;
++        if (value.length !== 2) {
++            return [new ValidationError(key, value, 'array length %d expected, length %d found', 2, value.length)];
++        }
+ 
+-        gl.stencilFunc(gl.ALWAYS, id, 0xF8);
++        var type = getType(value[0]);
++        if (!stopKeyType) stopKeyType = type;
++        if (type !== stopKeyType) {
++            return [new ValidationError(key, value, '%s stop key type must match previous stop key type %s', type, stopKeyType)];
++        }
+ 
+-        var program = this.useProgram('fill');
+-        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
++        if (type === 'object') {
++            if (value[0].zoom === undefined) {
++                return [new ValidationError(key, value, 'object stop key must have zoom')];
++            }
++            if (value[0].value === undefined) {
++                return [new ValidationError(key, value, 'object stop key must have value')];
++            }
++            errors = errors.concat(validateObject({
++                key: key + '[0]',
++                value: value[0],
++                valueSpec: { zoom: {} },
++                style: options.style,
++                styleSpec: options.styleSpec,
++                objectElementValidators: { zoom: validateNumber, value: validateValue }
++            }));
++        } else {
++            errors = errors.concat((isZoomFunction ? validateNumber : validateValue)({
++                key: key + '[0]',
++                value: value[0],
++                valueSpec: {},
++                style: options.style,
++                styleSpec: options.styleSpec
++            }));
++        }
+ 
+-        // Draw the clipping mask
+-        this.tileExtentVAO.bind(gl, program, this.tileExtentBuffer);
+-        gl.drawArrays(gl.TRIANGLE_STRIP, 0, this.tileExtentBuffer.length);
++        errors = errors.concat(validate({
++            key: key + '[1]',
++            value: value[1],
++            valueSpec: functionValueSpec,
++            style: options.style,
++            styleSpec: options.styleSpec
++        }));
++
++        if (getType(value[0]) === 'number') {
++            if (functionValueSpec.function === 'piecewise-constant' && value[0] % 1 !== 0) {
++                errors.push(new ValidationError(key + '[0]', value[0], 'zoom level for piecewise-constant functions must be an integer'));
++            }
++
++            if (options.arrayIndex !== 0) {
++                if (value[0] < options.array[options.arrayIndex - 1][0]) {
++                    errors.push(new ValidationError(key + '[0]', value[0], 'array stops must appear in ascending order'));
++                }
++            }
++        }
++
++        return errors;
+     }
+ 
+-    gl.stencilMask(0x00);
+-    gl.colorMask(true, true, true, true);
+-    this.depthMask(true);
+-    gl.enable(gl.DEPTH_TEST);
+-};
++    function validateValue(options) {
++        var errors = [];
++        var type = getType(options.value);
++        if (type !== 'number' && type !== 'string' && type !== 'array') {
++            errors.push(new ValidationError(options.key, options.value, 'property value must be a number, string or array'));
++        }
++        return errors;
++    }
+ 
+-Painter.prototype.enableTileClippingMask = function(coord) {
+-    var gl = this.gl;
+-    gl.stencilFunc(gl.EQUAL, this._tileClippingMaskIDs[coord.id], 0xF8);
+ };
+ 
+-// Overridden by headless tests.
+-Painter.prototype.prepareBuffers = function() {};
+-Painter.prototype.bindDefaultFramebuffer = function() {
+-    var gl = this.gl;
+-    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+-};
++},{"../error/validation_error":235,"../util/get_type":237,"./validate":239,"./validate_array":240,"./validate_number":250,"./validate_object":251}],247:[function(require,module,exports){
++'use strict';
+ 
+-var draw = {
+-    symbol: require('./draw_symbol'),
+-    circle: require('./draw_circle'),
+-    line: require('./draw_line'),
+-    fill: require('./draw_fill'),
+-    raster: require('./draw_raster'),
+-    background: require('./draw_background'),
+-    debug: require('./draw_debug')
+-};
++var ValidationError = require('../error/validation_error');
++var validateString = require('./validate_string');
+ 
+-Painter.prototype.render = function(style, options) {
+-    this.style = style;
+-    this.options = options;
++module.exports = function(options) {
++    var value = options.value;
++    var key = options.key;
+ 
+-    this.lineAtlas = style.lineAtlas;
++    var errors = validateString(options);
++    if (errors.length) return errors;
+ 
+-    this.spriteAtlas = style.spriteAtlas;
+-    this.spriteAtlas.setSprite(style.sprite);
++    if (value.indexOf('{fontstack}') === -1) {
++        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{fontstack}" token'));
++    }
+ 
+-    this.glyphSource = style.glyphSource;
++    if (value.indexOf('{range}') === -1) {
++        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{range}" token'));
++    }
+ 
+-    this.frameHistory.record(this.transform.zoom);
++    return errors;
++};
+ 
+-    this.prepareBuffers();
+-    this.clearColor();
+-    this.clearDepth();
++},{"../error/validation_error":235,"./validate_string":254}],248:[function(require,module,exports){
++'use strict';
+ 
+-    this.showOverdrawInspector(options.showOverdrawInspector);
++var ValidationError = require('../error/validation_error');
++var unbundle = require('../util/unbundle_jsonlint');
++var validateObject = require('./validate_object');
++var validateFilter = require('./validate_filter');
++var validatePaintProperty = require('./validate_paint_property');
++var validateLayoutProperty = require('./validate_layout_property');
++var extend = require('../util/extend');
+ 
+-    this.depthRange = (style._order.length + 2) * this.numSublayers * this.depthEpsilon;
++module.exports = function validateLayer(options) {
++    var errors = [];
+ 
+-    this.renderPass({isOpaquePass: true});
+-    this.renderPass({isOpaquePass: false});
+-};
++    var layer = options.value;
++    var key = options.key;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
+ 
+-Painter.prototype.renderPass = function(options) {
+-    var groups = this.style._groups;
+-    var isOpaquePass = options.isOpaquePass;
+-    this.currentLayer = isOpaquePass ? this.style._order.length : -1;
++    if (!layer.type && !layer.ref) {
++        errors.push(new ValidationError(key, layer, 'either "type" or "ref" is required'));
++    }
++    var type = unbundle(layer.type);
++    var ref = unbundle(layer.ref);
+ 
+-    for (var i = 0; i < groups.length; i++) {
+-        var group = groups[isOpaquePass ? groups.length - 1 - i : i];
+-        var source = this.style.sources[group.source];
++    if (layer.id) {
++        for (var i = 0; i < options.arrayIndex; i++) {
++            var otherLayer = style.layers[i];
++            if (unbundle(otherLayer.id) === unbundle(layer.id)) {
++                errors.push(new ValidationError(key, layer.id, 'duplicate layer id "%s", previously used at line %d', layer.id, otherLayer.id.__line__));
++            }
++        }
++    }
+ 
+-        var j;
+-        var coords = [];
+-        if (source) {
+-            coords = source.getVisibleCoordinates();
+-            for (j = 0; j < coords.length; j++) {
+-                coords[j].posMatrix = this.transform.calculatePosMatrix(coords[j], source.maxzoom);
++    if ('ref' in layer) {
++        ['type', 'source', 'source-layer', 'filter', 'layout'].forEach(function (p) {
++            if (p in layer) {
++                errors.push(new ValidationError(key, layer[p], '"%s" is prohibited for ref layers', p));
+             }
+-            this.clearStencil();
+-            if (source.prepare) source.prepare();
+-            if (source.isTileClipped) {
+-                this._renderTileClippingMasks(coords);
++        });
++
++        var parent;
++
++        style.layers.forEach(function(layer) {
++            if (layer.id == ref) parent = layer;
++        });
++
++        if (!parent) {
++            errors.push(new ValidationError(key, layer.ref, 'ref layer "%s" not found', ref));
++        } else if (parent.ref) {
++            errors.push(new ValidationError(key, layer.ref, 'ref cannot reference another ref layer'));
++        } else {
++            type = unbundle(parent.type);
++        }
++    } else if (type !== 'background') {
++        if (!layer.source) {
++            errors.push(new ValidationError(key, layer, 'missing required property "source"'));
++        } else {
++            var source = style.sources && style.sources[layer.source];
++            if (!source) {
++                errors.push(new ValidationError(key, layer.source, 'source "%s" not found', layer.source));
++            } else if (source.type == 'vector' && type == 'raster') {
++                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a raster source', layer.id));
++            } else if (source.type == 'raster' && type != 'raster') {
++                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a vector source', layer.id));
++            } else if (source.type == 'vector' && !layer['source-layer']) {
++                errors.push(new ValidationError(key, layer, 'layer "%s" must specify a "source-layer"', layer.id));
+             }
+         }
++    }
+ 
+-        if (isOpaquePass) {
+-            if (!this._showOverdrawInspector) {
+-                this.gl.disable(this.gl.BLEND);
++    errors = errors.concat(validateObject({
++        key: key,
++        value: layer,
++        valueSpec: styleSpec.layer,
++        style: options.style,
++        styleSpec: options.styleSpec,
++        objectElementValidators: {
++            filter: validateFilter,
++            layout: function(options) {
++                return validateObject({
++                    layer: layer,
++                    key: options.key,
++                    value: options.value,
++                    style: options.style,
++                    styleSpec: options.styleSpec,
++                    objectElementValidators: {
++                        '*': function(options) {
++                            return validateLayoutProperty(extend({layerType: type}, options));
++                        }
++                    }
++                });
++            },
++            paint: function(options) {
++                return validateObject({
++                    layer: layer,
++                    key: options.key,
++                    value: options.value,
++                    style: options.style,
++                    styleSpec: options.styleSpec,
++                    objectElementValidators: {
++                        '*': function(options) {
++                            return validatePaintProperty(extend({layerType: type}, options));
++                        }
++                    }
++                });
+             }
+-            this.isOpaquePass = true;
+-        } else {
+-            this.gl.enable(this.gl.BLEND);
+-            this.isOpaquePass = false;
+-            coords.reverse();
+-        }
+-
+-        for (j = 0; j < group.length; j++) {
+-            var layer = group[isOpaquePass ? group.length - 1 - j : j];
+-            this.currentLayer += isOpaquePass ? -1 : 1;
+-            this.renderLayer(this, source, layer, coords);
+         }
++    }));
+ 
+-        if (source) {
+-            draw.debug(this, source, coords);
+-        }
+-    }
++    return errors;
+ };
+ 
+-Painter.prototype.depthMask = function(mask) {
+-    if (mask !== this._depthMask) {
+-        this._depthMask = mask;
+-        this.gl.depthMask(mask);
+-    }
+-};
++},{"../error/validation_error":235,"../util/extend":236,"../util/unbundle_jsonlint":238,"./validate_filter":245,"./validate_layout_property":249,"./validate_object":251,"./validate_paint_property":252}],249:[function(require,module,exports){
++'use strict';
+ 
+-Painter.prototype.renderLayer = function(painter, source, layer, coords) {
+-    if (layer.isHidden(this.transform.zoom)) return;
+-    if (layer.type !== 'background' && !coords.length) return;
+-    this.id = layer.id;
+-    draw[layer.type](painter, source, layer, coords);
+-};
++var validate = require('./validate');
++var ValidationError = require('../error/validation_error');
+ 
+-Painter.prototype.setDepthSublayer = function(n) {
+-    var farDepth = 1 - ((1 + this.currentLayer) * this.numSublayers + n) * this.depthEpsilon;
+-    var nearDepth = farDepth - 1 + this.depthRange;
+-    this.gl.depthRange(nearDepth, farDepth);
+-};
++module.exports = function validateLayoutProperty(options) {
++    var key = options.key;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var value = options.value;
++    var propertyKey = options.objectKey;
++    var layerSpec = styleSpec['layout_' + options.layerType];
+ 
+-Painter.prototype.translatePosMatrix = function(matrix, tile, translate, anchor) {
+-    if (!translate[0] && !translate[1]) return matrix;
++    if (!layerSpec) return [];
+ 
+-    if (anchor === 'viewport') {
+-        var sinA = Math.sin(-this.transform.angle);
+-        var cosA = Math.cos(-this.transform.angle);
+-        translate = [
+-            translate[0] * cosA - translate[1] * sinA,
+-            translate[0] * sinA + translate[1] * cosA
+-        ];
+-    }
++    if (options.valueSpec || layerSpec[propertyKey]) {
++        var errors = [];
+ 
+-    var translation = [
+-        pixelsToTileUnits(tile, translate[0], this.transform.zoom),
+-        pixelsToTileUnits(tile, translate[1], this.transform.zoom),
+-        0
+-    ];
++        if (options.layerType === 'symbol') {
++            if (propertyKey === 'icon-image' && style && !style.sprite) {
++                errors.push(new ValidationError(key, value, 'use of "icon-image" requires a style "sprite" property'));
++            } else if (propertyKey === 'text-field' && style && !style.glyphs) {
++                errors.push(new ValidationError(key, value, 'use of "text-field" requires a style "glyphs" property'));
++            }
++        }
+ 
+-    var translatedMatrix = new Float32Array(16);
+-    mat4.translate(translatedMatrix, matrix, translation);
+-    return translatedMatrix;
+-};
++        return errors.concat(validate({
++            key: options.key,
++            value: value,
++            valueSpec: options.valueSpec || layerSpec[propertyKey],
++            style: style,
++            styleSpec: styleSpec
++        }));
+ 
+-Painter.prototype.saveTexture = function(texture) {
+-    var textures = this.reusableTextures[texture.size];
+-    if (!textures) {
+-        this.reusableTextures[texture.size] = [texture];
+     } else {
+-        textures.push(texture);
++        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
+     }
+-};
+ 
+-
+-Painter.prototype.getTexture = function(size) {
+-    var textures = this.reusableTextures[size];
+-    return textures && textures.length > 0 ? textures.pop() : null;
+-};
+-
+-Painter.prototype.lineWidth = function(width) {
+-    this.gl.lineWidth(util.clamp(width, this.lineWidthRange[0], this.lineWidthRange[1]));
+-};
+-
+-Painter.prototype.showOverdrawInspector = function(enabled) {
+-    if (!enabled && !this._showOverdrawInspector) return;
+-    this._showOverdrawInspector = enabled;
+-
+-    var gl = this.gl;
+-    if (enabled) {
+-        gl.blendFunc(gl.CONSTANT_COLOR, gl.ONE);
+-        var numOverdrawSteps = 8;
+-        var a = 1 / numOverdrawSteps;
+-        gl.blendColor(a, a, a, 0);
+-        gl.clearColor(0, 0, 0, 1);
+-        gl.clear(gl.COLOR_BUFFER_BIT);
+-    } else {
+-        gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+-    }
+ };
+ 
+-},{"../data/bucket":247,"../data/buffer":252,"../source/pixels_to_tile_units":277,"../source/tile_pyramid":282,"../util/browser":335,"../util/struct_array":347,"../util/util":349,"./draw_background":261,"./draw_circle":262,"./draw_debug":264,"./draw_fill":265,"./draw_line":266,"./draw_raster":267,"./draw_symbol":268,"./frame_history":269,"./painter/use_program":272,"./vertex_array_object":273,"gl-matrix":363}],272:[function(require,module,exports){
++},{"../error/validation_error":235,"./validate":239}],250:[function(require,module,exports){
+ 'use strict';
+ 
++var getType = require('../util/get_type');
++var ValidationError = require('../error/validation_error');
+ 
+-var path = require('path');
+-var assert = require('assert');
+-var util = require('../../util/util');
++module.exports = function validateNumber(options) {
++    var key = options.key;
++    var value = options.value;
++    var valueSpec = options.valueSpec;
++    var type = getType(value);
+ 
+-// readFileSync calls must be written out long-form for brfs.
+-var definitions = {
+-    debug: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\n\nvoid main() {\n    gl_FragColor = u_color;\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1);\n}\n"
+-    },
+-    fill: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvoid main() {\n    gl_FragColor = u_color * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n"
+-    },
+-    circle: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp float u_blur;\nuniform lowp float u_opacity;\n\nvarying lowp vec4 v_color;\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main() {\n    float t = smoothstep(1.0 - max(u_blur, v_antialiasblur), 1.0, length(v_extrude));\n    gl_FragColor = v_color * (1.0 - t) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_extrude_scale;\nuniform float u_devicepixelratio;\n\nattribute vec2 a_pos;\n\n#ifdef ATTRIBUTE_A_COLOR\nattribute lowp vec4 a_color;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\nuniform lowp float u_color_t;\nattribute lowp vec4 a_color0;\nattribute lowp vec4 a_color1;\nattribute lowp vec4 a_color2;\nattribute lowp vec4 a_color3;\n#else\nuniform lowp vec4 a_color;\n#endif\n\n#ifdef ATTRIBUTE_A_RADIUS\nattribute mediump float a_radius;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\nuniform lowp float u_radius_t;\nattribute mediump vec4 a_radius;\n#else\nuniform mediump float a_radius;\n#endif\n\nvarying vec2 v_extrude;\nvarying lowp vec4 v_color;\nvarying lowp float v_antialiasblur;\n\nfloat evaluate_zoom_function_1(const vec4 values, const float t) {\n    if (t < 1.0) {\n        return mix(values[0], values[1], t);\n    } else if (t < 2.0) {\n        return mix(values[1], values[2], t - 1.0);\n    } else {\n        return mix(values[2], values[3], t - 2.0);\n    }\n}\n\nvec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) {\n    if (t < 1.0) {\n        return mix(value0, value1, t);\n    } else if (t < 2.0) {\n        return mix(value1, value2, t - 1.0);\n    } else {\n        return mix(value2, value3, t - 2.0);\n    }\n}\n\nvoid main(void) {\n\n#ifdef ATTRIBUTE_A_RADIUS\n    mediump float radius = a_radius / 10.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\n    mediump float radius = evaluate_zoom_function_1(a_radius, u_radius_t) / 10.0;\n#else\n    mediump float radius = a_radius;\n#endif\n\n    // unencode the extrusion vector that we snuck into the a_pos vector\n    v_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);\n\n    vec2 extrude = v_extrude * radius * u_extrude_scale;\n    // multiply a_pos by 0.5, since we had it * 2 in order to sneak\n    // in extrusion data\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1);\n\n    // gl_Position is divided by gl_Position.w after this shader runs.\n    // Multiply the extrude by it so that it isn't affected by it.\n    gl_Position.xy += extrude * gl_Position.w;\n\n#ifdef ATTRIBUTE_A_COLOR\n    v_color = a_color / 255.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\n    v_color = evaluate_zoom_function_4(a_color0, a_color1, a_color2, a_color3, u_color_t) / 255.0;\n#else\n    v_color = a_color;\n#endif\n\n    // This is a minimum blur distance that serves as a faux-antialiasing for\n    // the circle. since blur is a ratio of the circle's size and the intent is\n    // to keep the blur at roughly 1px, the two are inversely related.\n    v_antialiasblur = 1.0 / u_devicepixelratio / radius;\n}\n"
+-    },
+-    line: {
+-        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
+-    },
+-    linepattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform float u_point;\nuniform float u_blur;\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_fade;\nuniform float u_opacity;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0);\n    float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0);\n    float y_a = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_a.y);\n    float y_b = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_b.y);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, vec2(x_a, y_a));\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, vec2(x_b, y_b));\n\n    vec4 color = mix(texture2D(u_image, pos), texture2D(u_image, pos2), u_fade);\n\n    alpha *= u_opacity;\n\n    gl_FragColor = color * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 extrude = a_extrude * scale;\n    mediump vec2 dist = u_linewidth.s * extrude;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n    v_linesofar = a_linesofar;\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
+-    },
+-    linesdfpattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\nuniform sampler2D u_image;\nuniform float u_sdfgamma;\nuniform float u_mix;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float sdfdist_a = texture2D(u_image, v_tex_a).a;\n    float sdfdist_b = texture2D(u_image, v_tex_b).a;\n    float sdfdist = mix(sdfdist_a, sdfdist_b, u_mix);\n    alpha *= smoothstep(0.5 - u_sdfgamma, 0.5 + u_sdfgamma, sdfdist);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump vec2 u_linewidth;\nuniform mediump float u_ratio;\nuniform vec2 u_patternscale_a;\nuniform float u_tex_y_a;\nuniform vec2 u_patternscale_b;\nuniform float u_tex_y_b;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    v_tex_a = vec2(a_linesofar * u_patternscale_a.x, normal.y * u_patternscale_a.y + u_tex_y_a);\n    v_tex_b = vec2(a_linesofar * u_patternscale_b.x, normal.y * u_patternscale_b.y + u_tex_y_b);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
+-    },
+-    outline: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
+-    },
+-    outlinepattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    // find distance to outline for alpha interpolation\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    \n\n    gl_FragColor = mix(color1, color2, u_mix) * alpha * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
+-    },
+-    pattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    gl_FragColor = mix(color1, color2, u_mix) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n}\n"
+-    },
+-    raster: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_opacity0;\nuniform float u_opacity1;\nuniform sampler2D u_image0;\nuniform sampler2D u_image1;\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nuniform float u_brightness_low;\nuniform float u_brightness_high;\n\nuniform float u_saturation_factor;\nuniform float u_contrast_factor;\nuniform vec3 u_spin_weights;\n\nvoid main() {\n\n    // read and cross-fade colors from the main and parent tiles\n    vec4 color0 = texture2D(u_image0, v_pos0);\n    vec4 color1 = texture2D(u_image1, v_pos1);\n    vec4 color = color0 * u_opacity0 + color1 * u_opacity1;\n    vec3 rgb = color.rgb;\n\n    // spin\n    rgb = vec3(\n        dot(rgb, u_spin_weights.xyz),\n        dot(rgb, u_spin_weights.zxy),\n        dot(rgb, u_spin_weights.yzx));\n\n    // saturation\n    float average = (color.r + color.g + color.b) / 3.0;\n    rgb += (average - rgb) * u_saturation_factor;\n\n    // contrast\n    rgb = (rgb - 0.5) * u_contrast_factor + 0.5;\n\n    // brightness\n    vec3 u_high_vec = vec3(u_brightness_low, u_brightness_low, u_brightness_low);\n    vec3 u_low_vec = vec3(u_brightness_high, u_brightness_high, u_brightness_high);\n\n    gl_FragColor = vec4(mix(u_high_vec, u_low_vec, rgb), color.a);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_tl_parent;\nuniform float u_scale_parent;\nuniform float u_buffer_scale;\n\nattribute vec2 a_pos;\nattribute vec2 a_texture_pos;\n\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5;\n    v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent;\n}\n"
+-    },
+-    icon: {
+-        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp float u_opacity;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * u_opacity;\n    gl_FragColor = texture2D(u_texture, v_tex) * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
+-    },
+-    sdf: {
+-        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform lowp float u_buffer;\nuniform lowp float u_gamma;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    lowp float dist = texture2D(u_texture, v_tex).a;\n    lowp float fade_alpha = texture2D(u_fadetexture, v_fade_tex).a;\n    lowp float gamma = u_gamma * v_gamma_scale;\n    lowp float alpha = smoothstep(u_buffer - gamma, u_buffer + gamma, dist) * fade_alpha;\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - y * u_extra);\n    v_gamma_scale = perspective_scale;\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
+-    },
+-    collisionbox: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_zoom;\nuniform float u_maxzoom;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n\n    float alpha = 0.5;\n\n    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha;\n\n    if (v_placement_zoom > u_zoom) {\n        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha;\n    }\n\n    if (u_zoom >= v_max_zoom) {\n        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25;\n    }\n\n    if (v_placement_zoom >= u_maxzoom) {\n        gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2;\n    }\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_extrude;\nattribute vec2 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_scale;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n     gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0);\n\n     v_max_zoom = a_data.x;\n     v_placement_zoom = a_data.y;\n}\n"
++    if (type !== 'number') {
++        return [new ValidationError(key, value, 'number expected, %s found', type)];
+     }
+-};
+ 
+-module.exports._createProgram = function(name, macros) {
+-    var gl = this.gl;
+-    var program = gl.createProgram();
+-    var definition = definitions[name];
++    if ('minimum' in valueSpec && value < valueSpec.minimum) {
++        return [new ValidationError(key, value, '%s is less than the minimum value %s', value, valueSpec.minimum)];
++    }
+ 
+-    var defines = '';
+-    if (macros) {
+-        for (var m = 0; m < macros.length; m++) {
+-            defines += '#define ' + macros[m] + '\n';
+-        }
++    if ('maximum' in valueSpec && value > valueSpec.maximum) {
++        return [new ValidationError(key, value, '%s is greater than the maximum value %s', value, valueSpec.maximum)];
+     }
+ 
+-    var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);
+-    gl.shaderSource(fragmentShader, defines + definition.fragmentSource);
+-    gl.compileShader(fragmentShader);
+-    assert(gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(fragmentShader));
+-    gl.attachShader(program, fragmentShader);
++    return [];
++};
+ 
+-    var vertexShader = gl.createShader(gl.VERTEX_SHADER);
+-    gl.shaderSource(vertexShader, defines + definition.vertexSource);
+-    gl.compileShader(vertexShader);
+-    assert(gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(vertexShader));
+-    gl.attachShader(program, vertexShader);
++},{"../error/validation_error":235,"../util/get_type":237}],251:[function(require,module,exports){
++'use strict';
+ 
+-    gl.linkProgram(program);
+-    assert(gl.getProgramParameter(program, gl.LINK_STATUS), gl.getProgramInfoLog(program));
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var validate = require('./validate');
+ 
+-    var attributes = {};
+-    var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
+-    for (var i = 0; i < numAttributes; i++) {
+-        var attribute = gl.getActiveAttrib(program, i);
+-        attributes[attribute.name] = i;
+-    }
++module.exports = function validateObject(options) {
++    var key = options.key;
++    var object = options.value;
++    var valueSpec = options.valueSpec;
++    var objectElementValidators = options.objectElementValidators || {};
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var errors = [];
+ 
+-    var uniforms = {};
+-    var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
+-    for (var ui = 0; ui < numUniforms; ui++) {
+-        var uniform = gl.getActiveUniform(program, ui);
+-        uniforms[uniform.name] = gl.getUniformLocation(program, uniform.name);
++    var type = getType(object);
++    if (type !== 'object') {
++        return [new ValidationError(key, object, 'object expected, %s found', type)];
+     }
+ 
+-    return util.extend({
+-        program: program,
+-        definition: definition,
+-        attributes: attributes,
+-        numAttributes: numAttributes
+-    }, attributes, uniforms);
+-};
+-
+-module.exports._createProgramCached = function(name, macros) {
+-    this.cache = this.cache || {};
+-    if (this._showOverdrawInspector) {
+-        macros = macros || [];
+-        macros.push('OVERDRAW_INSPECTOR');
+-    }
+-    var key = JSON.stringify({name: name, macros: macros});
+-    if (!this.cache[key]) {
+-        this.cache[key] = this._createProgram(name, macros);
+-    }
+-    return this.cache[key];
+-};
++    for (var objectKey in object) {
++        var valueSpecKey = objectKey.split('.')[0]; // treat 'paint.*' as 'paint'
++        var objectElementSpec = valueSpec && (valueSpec[valueSpecKey] || valueSpec['*']);
++        var objectElementValidator = objectElementValidators[valueSpecKey] || objectElementValidators['*'];
+ 
+-module.exports.useProgram = function (nextProgramName, macros) {
+-    var gl = this.gl;
++        if (objectElementSpec || objectElementValidator) {
++            errors = errors.concat((objectElementValidator || validate)({
++                key: (key ? key + '.' : key) + objectKey,
++                value: object[objectKey],
++                valueSpec: objectElementSpec,
++                style: style,
++                styleSpec: styleSpec,
++                object: object,
++                objectKey: objectKey
++            }));
+ 
+-    var nextProgram = this._createProgramCached(nextProgramName, macros);
+-    var previousProgram = this.currentProgram;
++        // tolerate root-level extra keys & arbitrary layer properties
++        // TODO remove this layer-specific logic
++        } else if (key !== '' && key.split('.').length !== 1) {
++            errors.push(new ValidationError(key, object[objectKey], 'unknown property "%s"', objectKey));
++        }
++    }
+ 
+-    if (previousProgram !== nextProgram) {
+-        gl.useProgram(nextProgram.program);
+-        this.currentProgram = nextProgram;
++    for (valueSpecKey in valueSpec) {
++        if (valueSpec[valueSpecKey].required && valueSpec[valueSpecKey]['default'] === undefined && object[valueSpecKey] === undefined) {
++            errors.push(new ValidationError(key, object, 'missing required property "%s"', valueSpecKey));
++        }
+     }
+ 
+-    return nextProgram;
++    return errors;
+ };
+ 
+-},{"../../util/util":349,"assert":52,"path":59}],273:[function(require,module,exports){
++},{"../error/validation_error":235,"../util/get_type":237,"./validate":239}],252:[function(require,module,exports){
+ 'use strict';
+ 
+-var assert = require('assert');
++var validate = require('./validate');
++var ValidationError = require('../error/validation_error');
+ 
+-module.exports = VertexArrayObject;
++module.exports = function validatePaintProperty(options) {
++    var key = options.key;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var value = options.value;
++    var propertyKey = options.objectKey;
++    var layerSpec = styleSpec['paint_' + options.layerType];
+ 
+-function VertexArrayObject() {
+-    this.boundProgram = null;
+-    this.boundVertexBuffer = null;
+-    this.boundVertexBuffer2 = null;
+-    this.boundElementBuffer = null;
+-    this.vao = null;
+-}
++    if (!layerSpec) return [];
+ 
+-var reported = false;
++    var transitionMatch = propertyKey.match(/^(.*)-transition$/);
+ 
+-VertexArrayObject.prototype.bind = function(gl, program, vertexBuffer, elementBuffer, vertexBuffer2) {
++    if (transitionMatch && layerSpec[transitionMatch[1]] && layerSpec[transitionMatch[1]].transition) {
++        return validate({
++            key: key,
++            value: value,
++            valueSpec: styleSpec.transition,
++            style: style,
++            styleSpec: styleSpec
++        });
+ 
+-    var ext = gl.extVertexArrayObject;
+-    if (ext === undefined) {
+-        ext = gl.extVertexArrayObject = gl.getExtension("OES_vertex_array_object");
+-    }
++    } else if (options.valueSpec || layerSpec[propertyKey]) {
++        return validate({
++            key: options.key,
++            value: value,
++            valueSpec: options.valueSpec || layerSpec[propertyKey],
++            style: style,
++            styleSpec: styleSpec
++        });
+ 
+-    if (ext) {
+-        if (!this.vao) this.vao = ext.createVertexArrayOES();
+-        ext.bindVertexArrayOES(this.vao);
+-    } else if (!reported) {
+-        console.warn('Not using VertexArrayObject extension.');
+-        reported = true;
++    } else {
++        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
+     }
+ 
+-    if (!this.boundProgram) {
++};
+ 
+-        var numPrevAttributes = ext ? 0 : (gl.currentNumAttributes || 0);
+-        var numNextAttributes = program.numAttributes;
+-        var i;
++},{"../error/validation_error":235,"./validate":239}],253:[function(require,module,exports){
++'use strict';
+ 
+-        // Enable all attributes for the new program.
+-        for (i = numPrevAttributes; i < numNextAttributes; i++) {
+-            gl.enableVertexAttribArray(i);
+-        }
++var ValidationError = require('../error/validation_error');
++var unbundle = require('../util/unbundle_jsonlint');
++var validateObject = require('./validate_object');
++var validateEnum = require('./validate_enum');
+ 
+-        if (!ext) {
+-            // Disable all attributes from the previous program that aren't used in
+-            // the new program. Note: attribute indices are *not* program specific!
+-            // WebGL breaks if you disable attribute 0. http://stackoverflow.com/questions/20305231
+-            assert(i > 0);
+-            for (i = numNextAttributes; i < numPrevAttributes; i++) {
+-                gl.disableVertexAttribArray(i);
+-            }
+-            gl.currentNumAttributes = numNextAttributes;
+-        }
++module.exports = function validateSource(options) {
++    var value = options.value;
++    var key = options.key;
++    var styleSpec = options.styleSpec;
++    var style = options.style;
+ 
+-        vertexBuffer.bind(gl);
+-        vertexBuffer.setVertexAttribPointers(gl, program);
+-        if (vertexBuffer2) {
+-            vertexBuffer2.bind(gl);
+-            vertexBuffer2.setVertexAttribPointers(gl, program);
+-        }
+-        if (elementBuffer) {
+-            elementBuffer.bind(gl);
+-        }
++    if (!value.type) {
++        return [new ValidationError(key, value, '"type" is required')];
++    }
+ 
+-        if (ext) {
+-            // store the arguments so that we can verify them when the vao is bound again
+-            this.boundProgram = program;
+-            this.boundVertexBuffer = vertexBuffer;
+-            this.boundVertexBuffer2 = vertexBuffer2;
+-            this.boundElementBuffer = elementBuffer;
+-        }
++    var type = unbundle(value.type);
++    switch (type) {
++        case 'vector':
++        case 'raster':
++            var errors = [];
++            errors = errors.concat(validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_tile,
++                style: options.style,
++                styleSpec: styleSpec
++            }));
++            if ('url' in value) {
++                for (var prop in value) {
++                    if (['type', 'url', 'tileSize'].indexOf(prop) < 0) {
++                        errors.push(new ValidationError(key + '.' + prop, value[prop], 'a source with a "url" property may not include a "%s" property', prop));
++                    }
++                }
++            }
++            return errors;
+ 
+-    } else {
+-        // verify that bind was called with the same arguments
+-        assert(this.boundProgram === program, 'trying to bind a VAO to a different shader');
+-        assert(this.boundVertexBuffer === vertexBuffer, 'trying to bind a VAO to a different vertex buffer');
+-        assert(this.boundVertexBuffer2 === vertexBuffer2, 'trying to bind a VAO to a different vertex buffer');
+-        assert(this.boundElementBuffer === elementBuffer, 'trying to bind a VAO to a different element buffer');
+-    }
+-};
++        case 'geojson':
++            return validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_geojson,
++                style: style,
++                styleSpec: styleSpec
++            });
+ 
+-VertexArrayObject.prototype.unbind = function(gl) {
+-    var ext = gl.extVertexArrayObject;
+-    if (ext) {
+-        ext.bindVertexArrayOES(null);
+-    }
+-};
++        case 'video':
++            return validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_video,
++                style: style,
++                styleSpec: styleSpec
++            });
+ 
+-VertexArrayObject.prototype.destroy = function(gl) {
+-    var ext = gl.extVertexArrayObject;
+-    if (ext && this.vao) {
+-        ext.deleteVertexArrayOES(this.vao);
+-        this.vao = null;
++        case 'image':
++            return validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_image,
++                style: style,
++                styleSpec: styleSpec
++            });
++
++        default:
++            return validateEnum({
++                key: key + '.type',
++                value: value.type,
++                valueSpec: {values: ['vector', 'raster', 'geojson', 'video', 'image']},
++                style: style,
++                styleSpec: styleSpec
++            });
+     }
+ };
+ 
+-},{"assert":52}],274:[function(require,module,exports){
++},{"../error/validation_error":235,"../util/unbundle_jsonlint":238,"./validate_enum":244,"./validate_object":251}],254:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('../util/util');
+-var Evented = require('../util/evented');
+-var TilePyramid = require('./tile_pyramid');
+-var Source = require('./source');
+-var urlResolve = require('resolve-url');
+-var EXTENT = require('../data/bucket').EXTENT;
++var getType = require('../util/get_type');
++var ValidationError = require('../error/validation_error');
++
++module.exports = function validateString(options) {
++    var value = options.value;
++    var key = options.key;
++    var type = getType(value);
++
++    if (type !== 'string') {
++        return [new ValidationError(key, value, 'string expected, %s found', type)];
++    }
+ 
+-module.exports = GeoJSONSource;
++    return [];
++};
+ 
+-/**
+- * Create a GeoJSON data source instance given an options object
+- * @class GeoJSONSource
+- * @param {Object} [options]
+- * @param {Object|string} options.data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
+- * @param {number} [options.maxzoom=18] Maximum zoom to preserve detail at.
+- * @param {number} [options.buffer] Tile buffer on each side in pixels.
+- * @param {number} [options.tolerance] Simplification tolerance (higher means simpler) in pixels.
+- * @param {number} [options.cluster] If the data is a collection of point features, setting this to true clusters the points by radius into groups.
+- * @param {number} [options.clusterRadius=50] Radius of each cluster when clustering points, in pixels.
+- * @param {number} [options.clusterMaxZoom] Max zoom to cluster points on. Defaults to one zoom less than `maxzoom` (so that last zoom features are not clustered).
++},{"../error/validation_error":235,"../util/get_type":237}],255:[function(require,module,exports){
++'use strict';
++
++var validateConstants = require('./validate/validate_constants');
++var validate = require('./validate/validate');
++var latestStyleSpec = require('../reference/latest.min');
++var validateGlyphsURL = require('./validate/validate_glyphs_url');
+ 
++/**
++ * Validate a Mapbox GL style against the style specification. This entrypoint,
++ * `mapbox-gl-style-spec/lib/validate_style.min`, is designed to produce as
++ * small a browserify bundle as possible by omitting unnecessary functionality
++ * and legacy style specifications.
++ *
++ * @param {Object} style The style to be validated.
++ * @param {Object} [styleSpec] The style specification to validate against.
++ *     If omitted, the latest style spec is used.
++ * @returns {Array<ValidationError>}
+  * @example
+- * var sourceObj = new mapboxgl.GeoJSONSource({
+- *    data: {
+- *        "type": "FeatureCollection",
+- *        "features": [{
+- *            "type": "Feature",
+- *            "geometry": {
+- *                "type": "Point",
+- *                "coordinates": [
+- *                    -76.53063297271729,
+- *                    39.18174077994108
+- *                ]
+- *            }
+- *        }]
+- *    }
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
++ *   var validate = require('mapbox-gl-style-spec/lib/validate_style.min');
++ *   var errors = validate(style);
+  */
+-function GeoJSONSource(options) {
+-    options = options || {};
++function validateStyleMin(style, styleSpec) {
++    styleSpec = styleSpec || latestStyleSpec;
+ 
+-    this._data = options.data;
++    var errors = [];
+ 
+-    if (options.maxzoom !== undefined) this.maxzoom = options.maxzoom;
++    errors = errors.concat(validate({
++        key: '',
++        value: style,
++        valueSpec: styleSpec.$root,
++        styleSpec: styleSpec,
++        style: style,
++        objectElementValidators: {
++            glyphs: validateGlyphsURL
++        }
++    }));
+ 
+-    var scale = EXTENT / this.tileSize;
++    if (styleSpec.$version > 7 && style.constants) {
++        errors = errors.concat(validateConstants({
++            key: 'constants',
++            value: style.constants,
++            style: style,
++            styleSpec: styleSpec
++        }));
++    }
+ 
+-    this.geojsonVtOptions = {
+-        buffer: (options.buffer !== undefined ? options.buffer : 128) * scale,
+-        tolerance: (options.tolerance !== undefined ? options.tolerance : 0.375) * scale,
+-        extent: EXTENT,
+-        maxZoom: this.maxzoom
+-    };
++    return sortErrors(errors);
++}
+ 
+-    this.cluster = options.cluster || false;
+-    this.superclusterOptions = {
+-        maxZoom: Math.min(options.clusterMaxZoom, this.maxzoom - 1) || (this.maxzoom - 1),
+-        extent: EXTENT,
+-        radius: (options.clusterRadius || 50) * scale,
+-        log: false
+-    };
++validateStyleMin.source = wrapCleanErrors(require('./validate/validate_source'));
++validateStyleMin.layer = wrapCleanErrors(require('./validate/validate_layer'));
++validateStyleMin.filter = wrapCleanErrors(require('./validate/validate_filter'));
++validateStyleMin.paintProperty = wrapCleanErrors(require('./validate/validate_paint_property'));
++validateStyleMin.layoutProperty = wrapCleanErrors(require('./validate/validate_layout_property'));
+ 
+-    this._pyramid = new TilePyramid({
+-        tileSize: this.tileSize,
+-        minzoom: this.minzoom,
+-        maxzoom: this.maxzoom,
+-        reparseOverscaled: true,
+-        load: this._loadTile.bind(this),
+-        abort: this._abortTile.bind(this),
+-        unload: this._unloadTile.bind(this),
+-        add: this._addTile.bind(this),
+-        remove: this._removeTile.bind(this),
+-        redoPlacement: this._redoTilePlacement.bind(this)
++function sortErrors(errors) {
++    return [].concat(errors).sort(function (a, b) {
++        return a.line - b.line;
+     });
+ }
+ 
+-GeoJSONSource.prototype = util.inherit(Evented, /** @lends GeoJSONSource.prototype */{
+-    minzoom: 0,
+-    maxzoom: 18,
+-    tileSize: 512,
+-    _dirty: true,
+-    isTileClipped: true,
++function wrapCleanErrors(inner) {
++    return function() {
++        return sortErrors(inner.apply(this, arguments));
++    };
++}
+ 
+-    /**
+-     * Update source geojson data and rerender map
+-     *
+-     * @param {Object|string} data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
+-     * @returns {GeoJSONSource} this
+-     */
+-    setData: function(data) {
+-        this._data = data;
+-        this._dirty = true;
++module.exports = validateStyleMin;
+ 
+-        this.fire('change');
++},{"../reference/latest.min":257,"./validate/validate":239,"./validate/validate_constants":243,"./validate/validate_filter":245,"./validate/validate_glyphs_url":247,"./validate/validate_layer":248,"./validate/validate_layout_property":249,"./validate/validate_paint_property":252,"./validate/validate_source":253}],256:[function(require,module,exports){
++module.exports = require('./v8.json');
+ 
+-        if (this.map)
+-            this.update(this.map.transform);
++},{"./v8.json":258}],257:[function(require,module,exports){
++module.exports = require('./v8.min.json');
+ 
+-        return this;
++},{"./v8.min.json":259}],258:[function(require,module,exports){
++module.exports={
++  "$version": 8,
++  "$root": {
++    "version": {
++      "required": true,
++      "type": "enum",
++      "values": [8],
++      "doc": "Style specification version number. Must be 8.",
++      "example": 8
+     },
+-
+-    onAdd: function(map) {
+-        this.map = map;
++    "name": {
++      "type": "string",
++      "doc": "A human-readable name for the style.",
++      "example": "Bright"
+     },
+-
+-    loaded: function() {
+-        return this._loaded && this._pyramid.loaded();
++    "metadata": {
++      "type": "*",
++      "doc": "Arbitrary properties useful to track with the stylesheet, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
+     },
+-
+-    update: function(transform) {
+-        if (this._dirty) {
+-            this._updateData();
+-        }
+-
+-        if (this._loaded) {
+-            this._pyramid.update(this.used, transform);
+-        }
++    "center": {
++      "type": "array",
++      "value": "number",
++      "doc": "Default map center in longitude and latitude.  The style center will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": [-73.9749, 40.7736]
+     },
+-
+-    reload: function() {
+-        if (this._loaded) {
+-            this._pyramid.reload();
++    "zoom": {
++      "type": "number",
++      "doc": "Default zoom level.  The style zoom will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": 12.5
++    },
++    "bearing": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "units": "degrees",
++      "doc": "Default bearing, in degrees clockwise from true north.  The style bearing will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": 29
++    },
++    "pitch": {
++      "type": "number",
++      "default": 0,
++      "units": "degrees",
++      "doc": "Default pitch, in degrees. Zero is perpendicular to the surface, for a look straight down at the map, while a greater value like 60 looks ahead towards the horizon. The style pitch will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": 50
++    },
++    "sources": {
++      "required": true,
++      "type": "sources",
++      "doc": "Data source specifications.",
++      "example": {
++        "mapbox-streets": {
++          "type": "vector",
++          "url": "mapbox://mapbox.mapbox-streets-v6"
+         }
++      }
+     },
+-
+-    serialize: function() {
+-        return {
+-            type: 'geojson',
+-            data: this._data
+-        };
++    "sprite": {
++      "type": "string",
++      "doc": "A base URL for retrieving the sprite image and metadata. The extensions `.png`, `.json` and scale factor `@2x.png` will be automatically appended. This property is required if any layer uses the 'sprite-image' layout property.",
++      "example": "mapbox://sprites/mapbox/bright-v8"
+     },
+-
+-    getVisibleCoordinates: Source._getVisibleCoordinates,
+-    getTile: Source._getTile,
+-
+-    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
+-    querySourceFeatures: Source._querySourceFeatures,
+-
+-    _updateData: function() {
+-        this._dirty = false;
+-        var options = {
+-            tileSize: this.tileSize,
+-            source: this.id,
+-            geojsonVtOptions: this.geojsonVtOptions,
+-            cluster: this.cluster,
+-            superclusterOptions: this.superclusterOptions
+-        };
+-
+-        var data = this._data;
+-        if (typeof data === 'string') {
+-            options.url = typeof window != 'undefined' ? urlResolve(window.location.href, data) : data;
+-        } else {
+-            options.data = JSON.stringify(data);
++    "glyphs": {
++      "type": "string",
++      "doc": "A URL template for loading signed-distance-field glyph sets in PBF format. The URL must include `{fontstack}` and `{range}` tokens. This property is required if any layer uses the 'text-field' layout property.",
++      "example": "mapbox://fonts/mapbox/{fontstack}/{range}.pbf"
++    },
++    "transition": {
++      "type": "transition",
++      "doc": "A global transition definition to use as a default across properties.",
++      "example": {
++        "duration": 300,
++        "delay": 0
++      }
++    },
++    "layers": {
++      "required": true,
++      "type": "array",
++      "value": "layer",
++      "doc": "Layers will be drawn in the order of this array.",
++      "example": [
++        {
++          "id": "water",
++          "source": "mapbox-streets",
++          "source-layer": "water",
++          "type": "fill",
++          "paint": {
++            "fill-color": "#00ffff"
++          }
+         }
+-        this.workerID = this.dispatcher.send('parse geojson', options, function(err) {
+-            this._loaded = true;
+-            if (err) {
+-                this.fire('error', {error: err});
+-            } else {
+-                this._pyramid.reload();
+-                this.fire('change');
+-            }
+-
+-        }.bind(this));
++      ]
++    }
++  },
++  "sources": {
++    "*": {
++      "type": "source",
++      "doc": "Specification of a data source. For vector and raster sources, either TileJSON or a URL to a TileJSON must be provided. For GeoJSON and video sources, a URL must be provided."
++    }
++  },
++  "source": [
++    "source_tile",
++    "source_geojson",
++    "source_video",
++    "source_image"
++  ],
++  "source_tile": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "vector",
++        "raster"
++      ],
++      "doc": "The data type of the tile source."
+     },
+-
+-    _loadTile: function(tile) {
+-        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
+-        var params = {
+-            uid: tile.uid,
+-            coord: tile.coord,
+-            zoom: tile.coord.z,
+-            maxZoom: this.maxzoom,
+-            tileSize: this.tileSize,
+-            source: this.id,
+-            overscaling: overscaling,
+-            angle: this.map.transform.angle,
+-            pitch: this.map.transform.pitch,
+-            showCollisionBoxes: this.map.showCollisionBoxes
+-        };
+-
+-        tile.workerID = this.dispatcher.send('load geojson tile', params, function(err, data) {
+-
+-            tile.unloadVectorData(this.map.painter);
+-
+-            if (tile.aborted)
+-                return;
+-
+-            if (err) {
+-                this.fire('tile.error', {tile: tile});
+-                return;
+-            }
+-
+-            tile.loadVectorData(data, this.map.style);
+-
+-            if (tile.redoWhenDone) {
+-                tile.redoWhenDone = false;
+-                tile.redoPlacement(this);
+-            }
+-
+-            this.fire('tile.load', {tile: tile});
+-
+-        }.bind(this), this.workerID);
++    "url": {
++      "type": "string",
++      "doc": "A URL to a TileJSON resource. Supported protocols are `http:`, `https:`, and `mapbox://<mapid>`."
+     },
+-
+-    _abortTile: function(tile) {
+-        tile.aborted = true;
++    "tiles": {
++      "type": "array",
++      "value": "string",
++      "doc": "An array of one or more tile source URLs, as in the TileJSON spec."
+     },
+-
+-    _addTile: function(tile) {
+-        this.fire('tile.add', {tile: tile});
++    "minzoom": {
++      "type": "number",
++      "default": 0,
++      "doc": "Minimum zoom level for which tiles are available, as in the TileJSON spec."
++    },
++    "maxzoom": {
++      "type": "number",
++      "default": 22,
++      "doc": "Maximum zoom level for which tiles are available, as in the TileJSON spec. Data from tiles at the maxzoom are used when displaying the map at higher zoom levels."
++    },
++    "tileSize": {
++      "type": "number",
++      "default": 512,
++      "units": "pixels",
++      "doc": "The minimum visual size to display tiles for this layer. Only configurable for raster layers."
++    },
++    "*": {
++      "type": "*",
++      "doc": "Other keys to configure the data source."
++    }
++  },
++  "source_geojson": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "geojson"
++      ],
++      "doc": "The data type of the GeoJSON source."
++    },
++    "data": {
++      "type": "*",
++      "doc": "A URL to a GeoJSON file, or inline GeoJSON."
++    },
++    "maxzoom": {
++      "type": "number",
++      "default": 18,
++      "doc": "Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels)."
++    },
++    "buffer": {
++      "type": "number",
++      "default": 128,
++      "doc": "Tile buffer size on each side (measured in 1/512ths of a tile; higher means fewer rendering artifacts near tile edges but slower performance)."
++    },
++    "tolerance": {
++      "type": "number",
++      "default": 0.375,
++      "doc": "Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance)."
++    },
++    "cluster": {
++      "type": "boolean",
++      "default": false,
++      "doc": "If the data is a collection of point features, setting this to true clusters the points by radius into groups."
++    },
++    "clusterRadius": {
++      "type": "number",
++      "default": 50,
++      "doc": "Radius of each cluster when clustering points, measured in 1/512ths of a tile."
++    },
++    "clusterMaxZoom": {
++      "type": "number",
++      "doc": "Max zoom to cluster points on. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered)."
++    }
++  },
++  "source_video": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "video"
++      ],
++      "doc": "The data type of the video source."
++    },
++    "urls": {
++      "required": true,
++      "type": "array",
++      "value": "string",
++      "doc": "URLs to video content in order of preferred format."
++    },
++    "coordinates": {
++      "required": true,
++      "doc": "Corners of video specified in longitude, latitude pairs.",
++      "type": "array",
++      "length": 4,
++      "value": {
++        "type": "array",
++        "length": 2,
++        "value": "number",
++        "doc": "A single longitude, latitude pair."
++      }
++    }
++  },
++  "source_image": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "image"
++      ],
++      "doc": "The data type of the image source."
++    },
++    "url": {
++      "required": true,
++      "type": "string",
++      "doc": "URL that points to an image"
++    },
++    "coordinates": {
++      "required": true,
++      "doc": "Corners of image specified in longitude, latitude pairs.",
++      "type": "array",
++      "length": 4,
++      "value": {
++        "type": "array",
++        "length": 2,
++        "value": "number",
++        "doc": "A single longitude, latitude pair."
++      }
++    }
++  },
++  "layer": {
++    "id": {
++      "type": "string",
++      "doc": "Unique layer name.",
++      "required": true
++    },
++    "type": {
++      "type": "enum",
++      "values": [
++        "fill",
++        "line",
++        "symbol",
++        "circle",
++        "raster",
++        "background"
++      ],
++      "doc": "Rendering type of this layer."
++    },
++    "metadata": {
++      "type": "*",
++      "doc": "Arbitrary properties useful to track with the layer, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
++    },
++    "ref": {
++      "type": "string",
++      "doc": "References another layer to copy `type`, `source`, `source-layer`, `minzoom`, `maxzoom`, `filter`, and `layout` properties from. This allows the layers to share processing and be more efficient."
++    },
++    "source": {
++      "type": "string",
++      "doc": "Name of a source description to be used for this layer."
++    },
++    "source-layer": {
++      "type": "string",
++      "doc": "Layer to use from a vector tile source. Required if the source supports multiple layers."
++    },
++    "minzoom": {
++      "type": "number",
++      "minimum": 0,
++      "maximum": 22,
++      "doc": "The minimum zoom level on which the layer gets parsed and appears on."
++    },
++    "maxzoom": {
++      "type": "number",
++      "minimum": 0,
++      "maximum": 22,
++      "doc": "The maximum zoom level on which the layer gets parsed and appears on."
++    },
++    "interactive": {
++      "type": "boolean",
++      "doc": "Enable querying of feature data from this layer for interactivity.",
++      "default": false
++    },
++    "filter": {
++      "type": "filter",
++      "doc": "A expression specifying conditions on source features. Only features that match the filter are displayed."
+     },
+-
+-    _removeTile: function(tile) {
+-        this.fire('tile.remove', {tile: tile});
++    "layout": {
++      "type": "layout",
++      "doc": "Layout properties for the layer."
+     },
+-
+-    _unloadTile: function(tile) {
+-        tile.unloadVectorData(this.map.painter);
+-        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    "paint": {
++      "type": "paint",
++      "doc": "Default paint properties for this layer."
+     },
+-
+-    redoPlacement: Source.redoPlacement,
+-
+-    _redoTilePlacement: function(tile) {
+-        tile.redoPlacement(this);
++    "paint.*": {
++      "type": "paint",
++      "doc": "Class-specific paint properties for this layer. The class name is the part after the first dot."
+     }
+-});
+-
+-},{"../data/bucket":247,"../util/evented":341,"../util/util":349,"./source":279,"./tile_pyramid":282,"resolve-url":405}],275:[function(require,module,exports){
+-'use strict';
+-
+-var Point = require('point-geometry');
+-var VectorTileFeature = require('vector-tile').VectorTileFeature;
+-var EXTENT = require('../data/bucket').EXTENT;
+-
+-module.exports = GeoJSONWrapper;
+-
+-// conform to vectortile api
+-function GeoJSONWrapper(features) {
+-    this.features = features;
+-    this.length = features.length;
+-    this.extent = EXTENT;
+-}
+-
+-GeoJSONWrapper.prototype.feature = function(i) {
+-    return new FeatureWrapper(this.features[i]);
+-};
+-
+-function FeatureWrapper(feature) {
+-    this.type = feature.type;
+-    this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry;
+-    this.properties = feature.tags;
+-    this.extent = EXTENT;
+-}
+-
+-FeatureWrapper.prototype.loadGeometry = function() {
+-    var rings = this.rawGeometry;
+-    this.geometry = [];
+-
+-    for (var i = 0; i < rings.length; i++) {
+-        var ring = rings[i],
+-            newRing = [];
+-        for (var j = 0; j < ring.length; j++) {
+-            newRing.push(new Point(ring[j][0], ring[j][1]));
++  },
++  "layout": [
++    "layout_fill",
++    "layout_line",
++    "layout_circle",
++    "layout_symbol",
++    "layout_raster",
++    "layout_background"
++  ],
++  "layout_background": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-        this.geometry.push(newRing);
++      }
+     }
+-    return this.geometry;
+-};
+-
+-FeatureWrapper.prototype.bbox = function() {
+-    if (!this.geometry) this.loadGeometry();
+-
+-    var rings = this.geometry,
+-        x1 = Infinity,
+-        x2 = -Infinity,
+-        y1 = Infinity,
+-        y2 = -Infinity;
+-
+-    for (var i = 0; i < rings.length; i++) {
+-        var ring = rings[i];
+-
+-        for (var j = 0; j < ring.length; j++) {
+-            var coord = ring[j];
+-
+-            x1 = Math.min(x1, coord.x);
+-            x2 = Math.max(x2, coord.x);
+-            y1 = Math.min(y1, coord.y);
+-            y2 = Math.max(y2, coord.y);
++  },
++  "layout_fill": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     }
+-
+-    return [x1, y1, x2, y2];
+-};
+-
+-FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON;
+-
+-},{"../data/bucket":247,"point-geometry":404,"vector-tile":413}],276:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var Tile = require('./tile');
+-var TileCoord = require('./tile_coord');
+-var LngLat = require('../geo/lng_lat');
+-var Point = require('point-geometry');
+-var Evented = require('../util/evented');
+-var ajax = require('../util/ajax');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
+-var Buffer = require('../data/buffer');
+-var VertexArrayObject = require('../render/vertex_array_object');
+-
+-module.exports = ImageSource;
+-
+-/**
+- * Create an Image source instance given an options object
+- * @class ImageSource
+- * @param {Object} [options]
+- * @param {string} options.url A string URL of an image file
+- * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
+- * @example
+- * var sourceObj = new mapboxgl.ImageSource({
+- *    url: 'https://www.mapbox.com/images/foo.png',
+- *    coordinates: [
+- *        [-76.54335737228394, 39.18579907229748],
+- *        [-76.52803659439087, 39.1838364847587],
+- *        [-76.5295386314392, 39.17683392507606],
+- *        [-76.54520273208618, 39.17876344106642]
+- *    ]
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
+- */
+-function ImageSource(options) {
+-    this.urls = options.urls;
+-    this.coordinates = options.coordinates;
+-
+-    ajax.getImage(options.url, function(err, image) {
+-        // @TODO handle errors via event.
+-        if (err) return;
+-
+-        this.image = image;
+-
+-        this.image.addEventListener('load', function() {
+-            this.map._rerender();
+-        }.bind(this));
+-
+-        this._loaded = true;
+-
+-        if (this.map) {
+-            this.setCoordinates(options.coordinates);
++  },
++  "layout_circle": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-    }.bind(this));
+-}
+-
+-ImageSource.prototype = util.inherit(Evented, /** @lends ImageSource.prototype */ {
+-    onAdd: function(map) {
+-        this.map = map;
+-        if (this.image) {
+-            this.setCoordinates(this.coordinates);
++      }
++    }
++  },
++  "layout_line": {
++    "line-cap": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "butt",
++        "round",
++        "square"
++      ],
++      "default": "butt",
++      "doc": "The display of line endings.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    /**
+-     * Update image coordinates and rerender map
+-     *
+-     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
+-     * @returns {ImageSource} this
+-     */
+-    setCoordinates: function(coordinates) {
+-        this.coordinates = coordinates;
+-
+-        // Calculate which mercator tile is suitable for rendering the image in
+-        // and create a buffer with the corner coordinates. These coordinates
+-        // may be outside the tile, because raster tiles aren't clipped when rendering.
+-
+-        var map = this.map;
+-        var cornerZ0Coords = coordinates.map(function(coord) {
+-            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
+-        });
+-
+-        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
+-        centerCoord.column = Math.round(centerCoord.column);
+-        centerCoord.row = Math.round(centerCoord.row);
+-
+-        var tileCoords = cornerZ0Coords.map(function(coord) {
+-            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
+-            return new Point(
+-                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
+-                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
+-        });
+-
+-        var maxInt16 = 32767;
+-        var array = new RasterBoundsArray();
+-        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
+-        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
+-        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
+-        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
+-
+-        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
+-        this.tile.buckets = {};
+-
+-        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
+-        this.tile.boundsVAO = new VertexArrayObject();
+-
+-        this.fire('change');
+-
+-        return this;
++    "line-join": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "bevel",
++        "round",
++        "miter"
++      ],
++      "default": "miter",
++      "doc": "The display of lines when joining.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    loaded: function() {
+-        return this.image && this.image.complete;
++    "line-miter-limit": {
++      "type": "number",
++      "default": 2,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Used to automatically convert miter joins to bevel joins for sharp angles.",
++      "requires": [
++        {
++          "line-join": "miter"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    update: function() {
+-        // noop
++    "line-round-limit": {
++      "type": "number",
++      "default": 1.05,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Used to automatically convert round joins to miter joins for shallow angles.",
++      "requires": [
++        {
++          "line-join": "round"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    reload: function() {
+-        // noop
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "layout_symbol": {
++    "symbol-placement": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++          "point",
++          "line"
++      ],
++      "default": "point",
++      "doc": "Label placement relative to its geometry. `line` can only be used on LineStrings and Polygons.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    prepare: function() {
+-        if (!this._loaded || !this.loaded()) return;
+-
+-        var painter = this.map.painter;
+-        var gl = painter.gl;
+-
+-        if (!this.tile.texture) {
+-            this.tile.texture = gl.createTexture();
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
+-        } else {
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
++    "symbol-spacing": {
++      "type": "number",
++      "default": 250,
++      "minimum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "units": "pixels",
++      "doc": "Distance between two symbol anchors.",
++      "requires": [
++        {
++          "symbol-placement": "line"
+         }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    getVisibleCoordinates: function() {
+-        if (this.tile) return [this.tile.coord];
+-        else return [];
++    "symbol-avoid-edges": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    getTile: function() {
+-        return this.tile;
++    "icon-allow-overlap": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the icon will be visible even if it collides with other previously drawn symbols.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    serialize: function() {
+-        return {
+-            type: 'image',
+-            urls: this.urls,
+-            coordinates: this.coordinates
+-        };
+-    }
+-});
+-
+-},{"../data/bucket":247,"../data/buffer":252,"../geo/lng_lat":256,"../render/draw_raster":267,"../render/vertex_array_object":273,"../util/ajax":334,"../util/evented":341,"../util/util":349,"./tile":280,"./tile_coord":281,"point-geometry":404}],277:[function(require,module,exports){
+-'use strict';
+-
+-var Bucket = require('../data/bucket');
+-
+-/**
+- * Converts a pixel value at a the given zoom level to tile units.
+- *
+- * The shaders mostly calculate everything in tile units so style
+- * properties need to be converted from pixels to tile units using this.
+- *
+- * For example, a translation by 30 pixels at zoom 6.5 will be a
+- * translation by pixelsToTileUnits(30, 6.5) tile units.
+- *
+- * @param {object} tile a {Tile object} will work well, but any object that follows the format {coord: {TileCord object}, tileSize: {number}} will work
+- * @param {number} pixelValue
+- * @param {number} z
+- * @returns {number} value in tile units
+- * @private
+- */
+-module.exports = function(tile, pixelValue, z) {
+-    return pixelValue * (Bucket.EXTENT / (tile.tileSize * Math.pow(2, z - tile.coord.z)));
+-};
+-
+-
+-},{"../data/bucket":247}],278:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var Evented = require('../util/evented');
+-var Source = require('./source');
+-var normalizeURL = require('../util/mapbox').normalizeTileURL;
+-
+-module.exports = RasterTileSource;
+-
+-function RasterTileSource(options) {
+-    util.extend(this, util.pick(options, ['url', 'tileSize']));
+-
+-    Source._loadTileJSON.call(this, options);
+-}
+-
+-RasterTileSource.prototype = util.inherit(Evented, {
+-    minzoom: 0,
+-    maxzoom: 22,
+-    roundZoom: true,
+-    tileSize: 512,
+-    _loaded: false,
+-
+-    onAdd: function(map) {
+-        this.map = map;
++    "icon-ignore-placement": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, other symbols can be visible even if they collide with the icon.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "icon-optional": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.",
++      "requires": [
++        "icon-image",
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "icon-rotation-alignment": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "default": "viewport",
++      "doc": "Orientation of icon when map is rotated.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "icon-size": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Scale factor for icon. 1 is original size, 3 triples the size.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "icon-text-fit": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": false,
++      "values": [
++        "none",
++        "both",
++        "width",
++        "height"
++      ],
++      "default": "none",
++      "doc": "Position and scale an icon by the its corresponding text.",
++      "requires": [
++        "icon-image",
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
++        }
++      }
++    },
++    "icon-text-fit-padding": {
++      "type": "array",
++      "value": "number",
++      "length": 4,
++      "default": [
++        0,
++        0,
++        0,
++        0
++      ],
++      "units": "pixels",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Size of padding area around the text-fit size in clockwise order: top, right, bottom, left.",
++      "requires": [
++        "icon-image",
++        "icon-text-fit",
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
++        }
++      }
++    },
++    "icon-image": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "A string with {tokens} replaced, referencing the data property to pull from.",
++      "tokens": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    loaded: function() {
+-        return this._pyramid && this._pyramid.loaded();
++    "icon-rotate": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "units": "degrees",
++      "doc": "Rotates the icon clockwise.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.21.0"
++        }
++      }
+     },
+-
+-    update: function(transform) {
+-        if (this._pyramid) {
+-            this._pyramid.update(this.used, transform, this.map.style.rasterFadeDuration);
++    "icon-padding": {
++      "type": "number",
++      "default": 2,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "units": "pixels",
++      "doc": "Size of the additional area around the icon bounding box used for detecting symbol collisions.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    reload: function() {
+-        // noop
++    "icon-keep-upright": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the icon may be flipped to prevent it from being rendered upside-down.",
++      "requires": [
++        "icon-image",
++        {
++          "icon-rotation-alignment": "map"
++        },
++        {
++          "symbol-placement": "line"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    serialize: function() {
+-        return {
+-            type: 'raster',
+-            url: this.url,
+-            tileSize: this.tileSize
+-        };
++    "icon-offset": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    getVisibleCoordinates: Source._getVisibleCoordinates,
+-    getTile: Source._getTile,
+-
+-    _loadTile: function(tile) {
+-        var url = normalizeURL(tile.coord.url(this.tiles), this.url, this.tileSize);
+-
+-        tile.request = ajax.getImage(url, done.bind(this));
+-
+-        function done(err, img) {
+-            delete tile.request;
+-
+-            if (tile.aborted)
+-                return;
+-
+-            if (err) {
+-                tile.errored = true;
+-                this.fire('tile.error', {tile: tile, error: err});
+-                return;
+-            }
+-
+-            var gl = this.map.painter.gl;
+-            tile.texture = this.map.painter.getTexture(img.width);
+-            if (tile.texture) {
+-                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
+-                gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, img);
+-            } else {
+-                tile.texture = gl.createTexture();
+-                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-                gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
+-                gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, img);
+-                tile.texture.size = img.width;
+-            }
+-            gl.generateMipmap(gl.TEXTURE_2D);
+-
+-            tile.timeAdded = new Date().getTime();
+-            this.map.animationLoop.set(this.style.rasterFadeDuration);
+-
+-            tile.source = this;
+-            tile.loaded = true;
+-
+-            this.fire('tile.load', {tile: tile});
++    "text-pitch-alignment": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Aligns text to the plane of the `viewport` or the `map` when the map is pitched. Matches `text-rotation-alignment` if unspecified.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
+         }
++      }
+     },
+-
+-    _abortTile: function(tile) {
+-        tile.aborted = true;
+-
+-        if (tile.request) {
+-            tile.request.abort();
+-            delete tile.request;
++    "text-rotation-alignment": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "default": "viewport",
++      "doc": "Orientation of text when map is rotated.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    _addTile: function(tile) {
+-        this.fire('tile.add', {tile: tile});
++    "text-field": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": "",
++      "tokens": true,
++      "doc": "Value to use for a text label. Feature properties are specified using tokens like {field_name}.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _removeTile: function(tile) {
+-        this.fire('tile.remove', {tile: tile});
++    "text-font": {
++      "type": "array",
++      "value": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": ["Open Sans Regular", "Arial Unicode MS Regular"],
++      "doc": "Font stack to use for displaying text.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _unloadTile: function(tile) {
+-        if (tile.texture) this.map.painter.saveTexture(tile.texture);
+-    }
+-});
+-
+-},{"../util/ajax":334,"../util/evented":341,"../util/mapbox":346,"../util/util":349,"./source":279}],279:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var browser = require('../util/browser');
+-var TilePyramid = require('./tile_pyramid');
+-var normalizeURL = require('../util/mapbox').normalizeSourceURL;
+-var TileCoord = require('./tile_coord');
+-
+-exports._loadTileJSON = function(options) {
+-    var loaded = function(err, tileJSON) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
++    "text-size": {
++      "type": "number",
++      "default": 16,
++      "minimum": 0,
++      "units": "pixels",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Font size.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        util.extend(this, util.pick(tileJSON,
+-            ['tiles', 'minzoom', 'maxzoom', 'attribution']));
+-
+-        if (tileJSON.vector_layers) {
+-            this.vectorLayers = tileJSON.vector_layers;
+-            this.vectorLayerIds = this.vectorLayers.map(function(layer) { return layer.id; });
++      }
++    },
++    "text-max-width": {
++      "type": "number",
++      "default": 10,
++      "minimum": 0,
++      "units": "em",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "The maximum line width for text wrapping.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        this._pyramid = new TilePyramid({
+-            tileSize: this.tileSize,
+-            minzoom: this.minzoom,
+-            maxzoom: this.maxzoom,
+-            roundZoom: this.roundZoom,
+-            reparseOverscaled: this.reparseOverscaled,
+-            load: this._loadTile.bind(this),
+-            abort: this._abortTile.bind(this),
+-            unload: this._unloadTile.bind(this),
+-            add: this._addTile.bind(this),
+-            remove: this._removeTile.bind(this),
+-            redoPlacement: this._redoTilePlacement ? this._redoTilePlacement.bind(this) : undefined
+-        });
+-
+-        this.fire('load');
+-    }.bind(this);
+-
+-    if (options.url) {
+-        ajax.getJSON(normalizeURL(options.url), loaded);
+-    } else {
+-        browser.frame(loaded.bind(this, null, options));
+-    }
+-};
+-
+-exports.redoPlacement = function() {
+-    if (!this._pyramid) {
+-        return;
+-    }
+-
+-    var ids = this._pyramid.orderedIDs();
+-    for (var i = 0; i < ids.length; i++) {
+-        var tile = this._pyramid.getTile(ids[i]);
+-        this._redoTilePlacement(tile);
+-    }
+-};
+-
+-exports._getTile = function(coord) {
+-    return this._pyramid.getTile(coord.id);
+-};
+-
+-exports._getVisibleCoordinates = function() {
+-    if (!this._pyramid) return [];
+-    else return this._pyramid.renderedIDs().map(TileCoord.fromID);
+-};
+-
+-function sortTilesIn(a, b) {
+-    var coordA = a.tile.coord;
+-    var coordB = b.tile.coord;
+-    return (coordA.z - coordB.z) || (coordA.y - coordB.y) || (coordA.x - coordB.x);
+-}
+-
+-function mergeRenderedFeatureLayers(tiles) {
+-    var result = tiles[0] || {};
+-    for (var i = 1; i < tiles.length; i++) {
+-        var tile = tiles[i];
+-        for (var layerID in tile) {
+-            var tileFeatures = tile[layerID];
+-            var resultFeatures = result[layerID];
+-            if (resultFeatures === undefined) {
+-                resultFeatures = result[layerID] = tileFeatures;
+-            } else {
+-                for (var f = 0; f < tileFeatures.length; f++) {
+-                    resultFeatures.push(tileFeatures[f]);
+-                }
+-            }
++      }
++    },
++    "text-line-height": {
++      "type": "number",
++      "default": 1.2,
++      "units": "em",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Text leading value for multi-line text.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-    }
+-    return result;
+-}
+-
+-exports._queryRenderedVectorFeatures = function(queryGeometry, params, zoom, bearing) {
+-    if (!this._pyramid)
+-        return {};
+-
+-    var tilesIn = this._pyramid.tilesIn(queryGeometry);
+-
+-    tilesIn.sort(sortTilesIn);
+-
+-    var styleLayers = this.map.style._layers;
+-
+-    var renderedFeatureLayers = [];
+-    for (var r = 0; r < tilesIn.length; r++) {
+-        var tileIn = tilesIn[r];
+-        if (!tileIn.tile.featureIndex) continue;
+-
+-        renderedFeatureLayers.push(tileIn.tile.featureIndex.query({
+-            queryGeometry: tileIn.queryGeometry,
+-            scale: tileIn.scale,
+-            tileSize: tileIn.tile.tileSize,
+-            bearing: bearing,
+-            params: params
+-        }, styleLayers));
+-    }
+-    return mergeRenderedFeatureLayers(renderedFeatureLayers);
+-};
+-
+-exports._querySourceFeatures = function(params) {
+-    if (!this._pyramid) {
+-        return [];
+-    }
+-
+-    var pyramid = this._pyramid;
+-    var tiles = pyramid.renderedIDs().map(function(id) {
+-        return pyramid.getTile(id);
+-    });
+-
+-    var result = [];
+-
+-    var dataTiles = {};
+-    for (var i = 0; i < tiles.length; i++) {
+-        var tile = tiles[i];
+-        var dataID = new TileCoord(Math.min(tile.sourceMaxZoom, tile.coord.z), tile.coord.x, tile.coord.y, 0).id;
+-        if (!dataTiles[dataID]) {
+-            dataTiles[dataID] = true;
+-            tile.querySourceFeatures(result, params);
++      }
++    },
++    "text-letter-spacing": {
++      "type": "number",
++      "default": 0,
++      "units": "em",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Text tracking amount.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-    }
+-
+-    return result;
+-};
+-
+-/*
+- * Create a tiled data source instance given an options object
+- *
+- * @param {Object} options
+- * @param {string} options.type Either `raster` or `vector`.
+- * @param {string} options.url A tile source URL. This should either be `mapbox://{mapid}` or a full `http[s]` url that points to a TileJSON endpoint.
+- * @param {Array} options.tiles An array of tile sources. If `url` is not specified, `tiles` can be used instead to specify tile sources, as in the TileJSON spec. Other TileJSON keys such as `minzoom` and `maxzoom` can be specified in a source object if `tiles` is used.
+- * @param {string} options.id An optional `id` to assign to the source
+- * @param {number} [options.tileSize=512] Optional tile size (width and height in pixels, assuming tiles are square). This option is only configurable for raster sources
+- * @example
+- * var sourceObj = new mapboxgl.Source.create({
+- *    type: 'vector',
+- *    url: 'mapbox://mapbox.mapbox-streets-v5'
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
+- */
+-exports.create = function(source) {
+-    // This is not at file scope in order to avoid a circular require.
+-    var sources = {
+-        vector: require('./vector_tile_source'),
+-        raster: require('./raster_tile_source'),
+-        geojson: require('./geojson_source'),
+-        video: require('./video_source'),
+-        image: require('./image_source')
+-    };
+-
+-    return exports.is(source) ? source : new sources[source.type](source);
+-};
+-
+-exports.is = function(source) {
+-    // This is not at file scope in order to avoid a circular require.
+-    var sources = {
+-        vector: require('./vector_tile_source'),
+-        raster: require('./raster_tile_source'),
+-        geojson: require('./geojson_source'),
+-        video: require('./video_source'),
+-        image: require('./image_source')
+-    };
+-
+-    for (var type in sources) {
+-        if (source instanceof sources[type]) {
+-            return true;
++      }
++    },
++    "text-justify": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "left",
++        "center",
++        "right"
++      ],
++      "default": "center",
++      "doc": "Text justification options.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-    }
+-
+-    return false;
+-};
+-
+-},{"../util/ajax":334,"../util/browser":335,"../util/mapbox":346,"../util/util":349,"./geojson_source":274,"./image_source":276,"./raster_tile_source":278,"./tile_coord":281,"./tile_pyramid":282,"./vector_tile_source":283,"./video_source":284}],280:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var Bucket = require('../data/bucket');
+-var FeatureIndex = require('../data/feature_index');
+-var vt = require('vector-tile');
+-var Protobuf = require('pbf');
+-var GeoJSONFeature = require('../util/vectortile_to_geojson');
+-var featureFilter = require('feature-filter');
+-var CollisionTile = require('../symbol/collision_tile');
+-var CollisionBoxArray = require('../symbol/collision_box');
+-
+-module.exports = Tile;
+-
+-/**
+- * A tile object is the combination of a Coordinate, which defines
+- * its place, as well as a unique ID and data tracking for its content
+- *
+- * @param {Coordinate} coord
+- * @param {number} size
+- * @private
+- */
+-function Tile(coord, size, sourceMaxZoom) {
+-    this.coord = coord;
+-    this.uid = util.uniqueId();
+-    this.loaded = false; // TODO rename loaded
+-    this.isUnloaded = false;
+-    this.uses = 0;
+-    this.tileSize = size;
+-    this.sourceMaxZoom = sourceMaxZoom;
+-    this.buckets = {};
+-}
+-
+-Tile.prototype = {
+-
+-    /**
+-     * Given a data object with a 'buffers' property, load it into
+-     * this tile's elementGroups and buffers properties and set loaded
+-     * to true. If the data is null, like in the case of an empty
+-     * GeoJSON tile, no-op but still set loaded to true.
+-     * @param {Object} data
+-     * @returns {undefined}
+-     * @private
+-     */
+-    loadVectorData: function(data, style) {
+-        this.loaded = true;
+-
+-        // empty GeoJSON tile
+-        if (!data) return;
+-
+-        this.collisionBoxArray = new CollisionBoxArray(data.collisionBoxArray);
+-        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
+-        this.featureIndex = new FeatureIndex(data.featureIndex, data.rawTileData, this.collisionTile);
+-        this.rawTileData = data.rawTileData;
+-        this.buckets = unserializeBuckets(data.buckets, style);
++      }
++    },
++    "text-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "center",
++        "left",
++        "right",
++        "top",
++        "bottom",
++        "top-left",
++        "top-right",
++        "bottom-left",
++        "bottom-right"
++      ],
++      "default": "center",
++      "doc": "Part of the text placed closest to the anchor.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-max-angle": {
++      "type": "number",
++      "default": 45,
++      "units": "degrees",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Maximum angle change between adjacent characters.",
++      "requires": [
++        "text-field",
++        {
++          "symbol-placement": "line"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    /**
+-     * given a data object and a GL painter, destroy and re-create
+-     * all of its buffers.
+-     * @param {Object} data
+-     * @param {Object} painter
+-     * @returns {undefined}
+-     * @private
+-     */
+-    reloadSymbolData: function(data, painter, style) {
+-        if (this.isUnloaded) return;
+-
+-        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
+-        this.featureIndex.setCollisionTile(this.collisionTile);
+-
+-        // Destroy and delete existing symbol buckets
+-        for (var id in this.buckets) {
+-            var bucket = this.buckets[id];
+-            if (bucket.type === 'symbol') {
+-                bucket.destroy(painter.gl);
+-                delete this.buckets[id];
+-            }
++    "text-rotate": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "units": "degrees",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Rotates the text clockwise.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        // Add new symbol buckets
+-        util.extend(this.buckets, unserializeBuckets(data.buckets, style));
++      }
+     },
+-
+-    /**
+-     * Make sure that this tile doesn't own any data within a given
+-     * painter, so that it doesn't consume any memory or maintain
+-     * any references to the painter.
+-     * @param {Object} painter gl painter object
+-     * @returns {undefined}
+-     * @private
+-     */
+-    unloadVectorData: function(painter) {
+-        for (var id in this.buckets) {
+-            var bucket = this.buckets[id];
+-            bucket.destroy(painter.gl);
++    "text-padding": {
++      "type": "number",
++      "default": 2,
++      "minimum": 0,
++      "units": "pixels",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Size of the additional area around the text bounding box used for detecting symbol collisions.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        this.collisionBoxArray = null;
+-        this.collisionTile = null;
+-        this.featureIndex = null;
+-        this.rawTileData = null;
+-        this.buckets = null;
+-        this.loaded = false;
+-        this.isUnloaded = true;
++      }
+     },
+-
+-    redoPlacement: function(source) {
+-        if (!this.loaded || this.redoingPlacement) {
+-            this.redoWhenDone = true;
+-            return;
++    "text-keep-upright": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": true,
++      "doc": "If true, the text may be flipped vertically to prevent it from being rendered upside-down.",
++      "requires": [
++        "text-field",
++        {
++          "text-rotation-alignment": "map"
++        },
++        {
++          "symbol-placement": "line"
+         }
+-
+-        this.redoingPlacement = true;
+-
+-        source.dispatcher.send('redo placement', {
+-            uid: this.uid,
+-            source: source.id,
+-            angle: source.map.transform.angle,
+-            pitch: source.map.transform.pitch,
+-            showCollisionBoxes: source.map.showCollisionBoxes
+-        }, done.bind(this), this.workerID);
+-
+-        function done(_, data) {
+-            this.reloadSymbolData(data, source.map.painter, source.map.style);
+-            source.fire('tile.load', {tile: this});
+-
+-            this.redoingPlacement = false;
+-            if (this.redoWhenDone) {
+-                this.redoPlacement(source);
+-                this.redoWhenDone = false;
+-            }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    getBucket: function(layer) {
+-        return this.buckets && this.buckets[layer.ref || layer.id];
++    "text-transform": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "none",
++        "uppercase",
++        "lowercase"
++      ],
++      "default": "none",
++      "doc": "Specifies how to capitalize text, similar to the CSS `text-transform` property.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    querySourceFeatures: function(result, params) {
+-        if (!this.rawTileData) return;
+-
+-        if (!this.vtLayers) {
+-            this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
++    "text-offset": {
++      "type": "array",
++      "doc": "Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
++      "value": "number",
++      "units": "ems",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        var layer = this.vtLayers._geojsonTileLayer || this.vtLayers[params.sourceLayer];
+-
+-        if (!layer) return;
+-
+-        var filter = featureFilter(params.filter);
+-        var coord = { z: this.coord.z, x: this.coord.x, y: this.coord.y };
+-
+-        for (var i = 0; i < layer.length; i++) {
+-            var feature = layer.feature(i);
+-            if (filter(feature)) {
+-                var geojsonFeature = new GeoJSONFeature(feature, this.coord.z, this.coord.x, this.coord.y);
+-                geojsonFeature.tile = coord;
+-                result.push(geojsonFeature);
+-            }
++      }
++    },
++    "text-allow-overlap": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the text will be visible even if it collides with other previously drawn symbols.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
++    },
++    "text-ignore-placement": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, other symbols can be visible even if they collide with the text.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "text-optional": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not.",
++      "requires": [
++        "text-field",
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     }
+-};
+-
+-function unserializeBuckets(input, style) {
+-    var output = {};
+-    for (var i = 0; i < input.length; i++) {
+-        var layer = style.getLayer(input[i].layerId);
+-        if (!layer) continue;
+-
+-        var bucket = Bucket.create(util.extend({
+-            layer: layer,
+-            childLayers: input[i].childLayerIds
+-                .map(style.getLayer.bind(style))
+-                .filter(function(layer) { return layer; })
+-        }, input[i]));
+-        output[bucket.id] = bucket;
+-    }
+-    return output;
+-}
+-
+-},{"../data/bucket":247,"../data/feature_index":253,"../symbol/collision_box":306,"../symbol/collision_tile":308,"../util/util":349,"../util/vectortile_to_geojson":350,"feature-filter":352,"pbf":402,"vector-tile":413}],281:[function(require,module,exports){
+-'use strict';
+-
+-var assert = require('assert');
+-var Coordinate = require('../geo/coordinate');
+-
+-module.exports = TileCoord;
+-
+-function TileCoord(z, x, y, w) {
+-    assert(!isNaN(z) && z >= 0 && z % 1 === 0);
+-    assert(!isNaN(x) && x >= 0 && x % 1 === 0);
+-    assert(!isNaN(y) && y >= 0 && y % 1 === 0);
+-
+-    if (isNaN(w)) w = 0;
+-
+-    this.z = +z;
+-    this.x = +x;
+-    this.y = +y;
+-    this.w = +w;
+-
+-    // calculate id
+-    w *= 2;
+-    if (w < 0) w = w * -1 - 1;
+-    var dim = 1 << this.z;
+-    this.id = ((dim * dim * w + dim * this.y + this.x) * 32) + this.z;
+-
+-    // for caching pos matrix calculation when rendering
+-    this.posMatrix = null;
+-}
+-
+-TileCoord.prototype.toString = function() {
+-    return this.z + "/" + this.x + "/" + this.y;
+-};
+-
+-TileCoord.prototype.toCoordinate = function(sourceMaxZoom) {
+-    var zoom = Math.min(this.z, sourceMaxZoom);
+-    var tileScale = Math.pow(2, zoom);
+-    var row = this.y;
+-    var column = this.x + tileScale * this.w;
+-    return new Coordinate(column, row, zoom);
+-};
+-
+-// Parse a packed integer id into a TileCoord object
+-TileCoord.fromID = function(id) {
+-    var z = id % 32, dim = 1 << z;
+-    var xy = ((id - z) / 32);
+-    var x = xy % dim, y = ((xy - x) / dim) % dim;
+-    var w = Math.floor(xy / (dim * dim));
+-    if (w % 2 !== 0) w = w * -1 - 1;
+-    w /= 2;
+-    return new TileCoord(z, x, y, w);
+-};
+-
+-// given a list of urls, choose a url template and return a tile URL
+-TileCoord.prototype.url = function(urls, sourceMaxZoom) {
+-    return urls[(this.x + this.y) % urls.length]
+-        .replace('{prefix}', (this.x % 16).toString(16) + (this.y % 16).toString(16))
+-        .replace('{z}', Math.min(this.z, sourceMaxZoom || this.z))
+-        .replace('{x}', this.x)
+-        .replace('{y}', this.y);
+-};
+-
+-// Return the coordinate of the parent tile
+-TileCoord.prototype.parent = function(sourceMaxZoom) {
+-    if (this.z === 0) return null;
+-
+-    // the id represents an overscaled tile, return the same coordinates with a lower z
+-    if (this.z > sourceMaxZoom) {
+-        return new TileCoord(this.z - 1, this.x, this.y, this.w);
+-    }
+-
+-    return new TileCoord(this.z - 1, Math.floor(this.x / 2), Math.floor(this.y / 2), this.w);
+-};
+-
+-TileCoord.prototype.wrapped = function() {
+-    return new TileCoord(this.z, this.x, this.y, 0);
+-};
+-
+-// Return the coordinates of the tile's children
+-TileCoord.prototype.children = function(sourceMaxZoom) {
+-
+-    if (this.z >= sourceMaxZoom) {
+-        // return a single tile coord representing a an overscaled tile
+-        return [new TileCoord(this.z + 1, this.x, this.y, this.w)];
+-    }
+-
+-    var z = this.z + 1;
+-    var x = this.x * 2;
+-    var y = this.y * 2;
+-    return [
+-        new TileCoord(z, x, y, this.w),
+-        new TileCoord(z, x + 1, y, this.w),
+-        new TileCoord(z, x, y + 1, this.w),
+-        new TileCoord(z, x + 1, y + 1, this.w)
+-    ];
+-};
+-
+-// Taken from polymaps src/Layer.js
+-// https://github.com/simplegeo/polymaps/blob/master/src/Layer.js#L333-L383
+-
+-function edge(a, b) {
+-    if (a.row > b.row) { var t = a; a = b; b = t; }
+-    return {
+-        x0: a.column,
+-        y0: a.row,
+-        x1: b.column,
+-        y1: b.row,
+-        dx: b.column - a.column,
+-        dy: b.row - a.row
+-    };
+-}
+-
+-function scanSpans(e0, e1, ymin, ymax, scanLine) {
+-    var y0 = Math.max(ymin, Math.floor(e1.y0));
+-    var y1 = Math.min(ymax, Math.ceil(e1.y1));
+-
+-    // sort edges by x-coordinate
+-    if ((e0.x0 === e1.x0 && e0.y0 === e1.y0) ?
+-            (e0.x0 + e1.dy / e0.dy * e0.dx < e1.x1) :
+-            (e0.x1 - e1.dy / e0.dy * e0.dx < e1.x0)) {
+-        var t = e0; e0 = e1; e1 = t;
++  },
++  "layout_raster": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     }
+-
+-    // scan lines!
+-    var m0 = e0.dx / e0.dy;
+-    var m1 = e1.dx / e1.dy;
+-    var d0 = e0.dx > 0; // use y + 1 to compute x0
+-    var d1 = e1.dx < 0; // use y + 1 to compute x1
+-    for (var y = y0; y < y1; y++) {
+-        var x0 = m0 * Math.max(0, Math.min(e0.dy, y + d0 - e0.y0)) + e0.x0;
+-        var x1 = m1 * Math.max(0, Math.min(e1.dy, y + d1 - e1.y0)) + e1.x0;
+-        scanLine(Math.floor(x1), Math.ceil(x0), y);
++  },
++  "filter": {
++    "type": "array",
++    "value": "*",
++    "doc": "A filter selects specific features from a layer."
++  },
++  "filter_operator": {
++    "type": "enum",
++    "values": [
++      "==",
++      "!=",
++      ">",
++      ">=",
++      "<",
++      "<=",
++      "in",
++      "!in",
++      "all",
++      "any",
++      "none",
++      "has",
++      "!has"
++    ],
++    "doc": "The filter operator."
++  },
++  "geometry_type": {
++    "type": "enum",
++    "values": [
++      "Point",
++      "LineString",
++      "Polygon"
++    ],
++    "doc": "The geometry type for the filter to select."
++  },
++  "color_operation": {
++    "type": "enum",
++    "values": [
++      "lighten",
++      "saturate",
++      "spin",
++      "fade",
++      "mix"
++    ],
++    "doc": "A color operation to apply."
++  },
++  "function": {
++    "stops": {
++      "type": "array",
++      "required": true,
++      "doc": "An array of stops.",
++      "value": "function_stop"
++    },
++    "base": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "doc": "The exponential base of the interpolation curve. It controls the rate at which the result increases. Higher values make the result increase more towards the high end of the range. With `1` the stops are interpolated linearly."
++    },
++    "property": {
++      "type": "string",
++      "doc": "The name of a global property or feature property to use as the function input.",
++      "default": "$zoom"
++    },
++    "type": {
++      "type": "enum",
++      "values": [
++          "exponential",
++          "interval",
++          "categorical"
++      ],
++      "doc": "The interpolation strategy to use in function evaluation.",
++      "default": "exponential"
+     }
+-}
+-
+-function scanTriangle(a, b, c, ymin, ymax, scanLine) {
+-    var ab = edge(a, b),
+-        bc = edge(b, c),
+-        ca = edge(c, a);
+-
+-    var t;
+-
+-    // sort edges by y-length
+-    if (ab.dy > bc.dy) { t = ab; ab = bc; bc = t; }
+-    if (ab.dy > ca.dy) { t = ab; ab = ca; ca = t; }
+-    if (bc.dy > ca.dy) { t = bc; bc = ca; ca = t; }
+-
+-    // scan span! scan span!
+-    if (ab.dy) scanSpans(ca, ab, ymin, ymax, scanLine);
+-    if (bc.dy) scanSpans(ca, bc, ymin, ymax, scanLine);
+-}
+-
+-TileCoord.cover = function(z, bounds, actualZ) {
+-    var tiles = 1 << z;
+-    var t = {};
+-
+-    function scanLine(x0, x1, y) {
+-        var x, wx, coord;
+-        if (y >= 0 && y <= tiles) {
+-            for (x = x0; x < x1; x++) {
+-                wx = (x % tiles + tiles) % tiles;
+-                coord = new TileCoord(actualZ, wx, y, Math.floor(x / tiles));
+-                t[coord.id] = coord;
+-            }
++  },
++  "function_stop": {
++    "type": "array",
++    "minimum": 0,
++    "maximum": 22,
++    "value": [
++      "number",
++      "color"
++    ],
++    "length": 2,
++    "doc": "Zoom level and value pair."
++  },
++  "paint": [
++    "paint_fill",
++    "paint_line",
++    "paint_circle",
++    "paint_symbol",
++    "paint_raster",
++    "paint_background"
++  ],
++  "paint_fill": {
++    "fill-antialias": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": true,
++      "doc": "Whether or not the fill should be antialiased.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "fill-opacity": {
++      "type": "number",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "doc": "The opacity of the entire fill layer. In contrast to the fill-color, this value will also affect the 1px stroke around the fill, if the stroke is used.",
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.21.0"
++        }
++      }
++    },
++    "fill-color": {
++      "type": "color",
++      "default": "#000000",
++      "doc": "The color of the filled part of this layer. This color can be specified as rgba with an alpha component and the color's opacity will not affect the opacity of the 1px stroke, if it is used.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "fill-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.19.0"
++        }
++      }
++    },
++    "fill-outline-color": {
++      "type": "color",
++      "doc": "The outline color of the fill. Matches the value of `fill-color` if unspecified.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "fill-pattern"
++        },
++        {
++          "fill-antialias": true
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.19.0"
++        }
++      }
++    },
++    "fill-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "fill-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
++      "default": "map",
++      "requires": [
++        "fill-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "fill-pattern": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     }
+-
+-    // Divide the screen up in two triangles and scan each of them:
+-    // +---/
+-    // | / |
+-    // /---+
+-    scanTriangle(bounds[0], bounds[1], bounds[2], 0, tiles, scanLine);
+-    scanTriangle(bounds[2], bounds[3], bounds[0], 0, tiles, scanLine);
+-
+-    return Object.keys(t).map(function(id) {
+-        return t[id];
+-    });
+-};
+-
+-},{"../geo/coordinate":255,"assert":52}],282:[function(require,module,exports){
+-'use strict';
+-
+-var Tile = require('./tile');
+-var TileCoord = require('./tile_coord');
+-var Point = require('point-geometry');
+-var Cache = require('../util/lru_cache');
+-var Coordinate = require('../geo/coordinate');
+-var util = require('../util/util');
+-var EXTENT = require('../data/bucket').EXTENT;
+-
+-module.exports = TilePyramid;
+-
+-/**
+- * A tile pyramid is a specialized cache and datastructure
+- * that contains tiles. It's used by sources to manage their
+- * data.
+- *
+- * @param {Object} options
+- * @param {number} options.tileSize
+- * @param {number} options.minzoom
+- * @param {number} options.maxzoom
+- * @private
+- */
+-function TilePyramid(options) {
+-    this.tileSize = options.tileSize;
+-    this.minzoom = options.minzoom;
+-    this.maxzoom = options.maxzoom;
+-    this.roundZoom = options.roundZoom;
+-    this.reparseOverscaled = options.reparseOverscaled;
+-
+-    this._load = options.load;
+-    this._abort = options.abort;
+-    this._unload = options.unload;
+-    this._add = options.add;
+-    this._remove = options.remove;
+-    this._redoPlacement = options.redoPlacement;
+-
+-    this._tiles = {};
+-    this._cache = new Cache(0, function(tile) { return this._unload(tile); }.bind(this));
+-
+-    this._filterRendered = this._filterRendered.bind(this);
+-}
+-
+-
+-TilePyramid.maxOverzooming = 10;
+-TilePyramid.maxUnderzooming = 3;
+-
+-TilePyramid.prototype = {
+-    /**
+-     * Confirm that every tracked tile is loaded.
+-     * @returns {boolean} whether all tiles are loaded.
+-     * @private
+-     */
+-    loaded: function() {
+-        for (var t in this._tiles) {
+-            if (!this._tiles[t].loaded && !this._tiles[t].errored)
+-                return false;
++  },
++  "paint_line": {
++    "line-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the line will be drawn.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-        return true;
++      }
+     },
+-
+-    /**
+-     * Return all tile ids ordered with z-order, and cast to numbers
+-     * @returns {Array<number>} ids
+-     * @private
+-     */
+-    orderedIDs: function() {
+-        return Object.keys(this._tiles).map(Number).sort(compareKeyZoom);
++    "line-color": {
++      "type": "color",
++      "doc": "The color with which the line will be drawn.",
++      "default": "#000000",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "line-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.23.0"
++        }
++      }
+     },
+-
+-    renderedIDs: function() {
+-        return this.orderedIDs().filter(this._filterRendered);
++    "line-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _filterRendered: function(id) {
+-        return this._tiles[id].loaded && !this._coveredTiles[id];
++    "line-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
++      "default": "map",
++      "requires": [
++        "line-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    reload: function() {
+-        this._cache.reset();
+-        for (var i in this._tiles) {
+-            this._load(this._tiles[i]);
++    "line-width": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Stroke thickness.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    /**
+-     * Get a specific tile by id
+-     * @param {string|number} id tile id
+-     * @returns {Object} tile
+-     * @private
+-     */
+-    getTile: function(id) {
+-        return this._tiles[id];
++    "line-gap-width": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "doc": "Draws a line casing outside of a line's actual path. Value indicates the width of the inner gap.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    /**
+-     * get the zoom level adjusted for the difference in map and source tilesizes
+-     * @param {Object} transform
+-     * @returns {number} zoom level
+-     * @private
+-     */
+-    getZoom: function(transform) {
+-        return transform.zoom + Math.log(transform.tileSize / this.tileSize) / Math.LN2;
++    "line-offset": {
++      "type": "number",
++      "default": 0,
++      "doc": "The line's offset. For linear features, a positive value offsets the line to the right, relative to the direction of the line, and a negative value to the left. For polygon features, a positive value results in an inset, and a negative value results in an outset.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "sdk-support": {
++        "basic": {
++          "js": "0.12.1",
++          "ios": "3.1.0",
++          "android": "3.0.0"
++        }
++      }
+     },
+-
+-    /**
+-     * Return a zoom level that will cover all tiles in a given transform
+-     * @param {Object} transform
+-     * @returns {number} zoom level
+-     * @private
+-     */
+-    coveringZoomLevel: function(transform) {
+-        return (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
++    "line-blur": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Blur applied to the line, in pixels.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    /**
+-     * Given a transform, return all coordinates that could cover that
+-     * transform for a covering zoom level.
+-     * @param {Object} transform
+-     * @returns {Array<Tile>} tiles
+-     * @private
+-     */
+-    coveringTiles: function(transform) {
+-        var z = this.coveringZoomLevel(transform);
+-        var actualZ = z;
+-
+-        if (z < this.minzoom) return [];
+-        if (z > this.maxzoom) z = this.maxzoom;
+-
+-        var tr = transform,
+-            tileCenter = tr.locationCoordinate(tr.center)._zoomTo(z),
+-            centerPoint = new Point(tileCenter.column - 0.5, tileCenter.row - 0.5);
+-
+-        return TileCoord.cover(z, [
+-            tr.pointCoordinate(new Point(0, 0))._zoomTo(z),
+-            tr.pointCoordinate(new Point(tr.width, 0))._zoomTo(z),
+-            tr.pointCoordinate(new Point(tr.width, tr.height))._zoomTo(z),
+-            tr.pointCoordinate(new Point(0, tr.height))._zoomTo(z)
+-        ], this.reparseOverscaled ? actualZ : z).sort(function(a, b) {
+-            return centerPoint.dist(a) - centerPoint.dist(b);
+-        });
++    "line-dasharray": {
++      "type": "array",
++      "value": "number",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Specifies the lengths of the alternating dashes and gaps that form the dash pattern. The lengths are later scaled by the line width. To convert a dash length to pixels, multiply the length by the current line width.",
++      "minimum": 0,
++      "transition": true,
++      "units": "line widths",
++      "requires": [
++        {
++          "!": "line-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    /**
+-     * Recursively find children of the given tile (up to maxCoveringZoom) that are already loaded;
+-     * adds found tiles to retain object; returns true if any child is found.
+-     *
+-     * @param {Coordinate} coord
+-     * @param {number} maxCoveringZoom
+-     * @param {boolean} retain
+-     * @returns {boolean} whether the operation was complete
+-     * @private
+-     */
+-    findLoadedChildren: function(coord, maxCoveringZoom, retain) {
+-        var found = false;
+-
+-        for (var id in this._tiles) {
+-            var tile = this._tiles[id];
+-
+-            // only consider loaded tiles on higher zoom levels (up to maxCoveringZoom)
+-            if (retain[id] || !tile.loaded || tile.coord.z <= coord.z || tile.coord.z > maxCoveringZoom) continue;
+-
+-            // disregard tiles that are not descendants of the given tile coordinate
+-            var z2 = Math.pow(2, Math.min(tile.coord.z, this.maxzoom) - Math.min(coord.z, this.maxzoom));
+-            if (Math.floor(tile.coord.x / z2) !== coord.x ||
+-                Math.floor(tile.coord.y / z2) !== coord.y)
+-                continue;
+-
+-            // found loaded child
+-            retain[id] = true;
+-            found = true;
+-
+-            // loop through parents; retain the topmost loaded one if found
+-            while (tile && tile.coord.z - 1 > coord.z) {
+-                var parentId = tile.coord.parent(this.maxzoom).id;
+-                tile = this._tiles[parentId];
+-
+-                if (tile && tile.loaded) {
+-                    delete retain[id];
+-                    retain[parentId] = true;
+-                }
+-            }
++    "line-pattern": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "Name of image in sprite to use for drawing image lines. For seamless patterns, image width must be a factor of two (2, 4, 8, ..., 512).",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-        return found;
++      }
++    }
++  },
++  "paint_circle": {
++    "circle-radius": {
++      "type": "number",
++      "default": 5,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Circle radius.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.18.0"
++        }
++      }
+     },
+-
+-    /**
+-     * Find a loaded parent of the given tile (up to minCoveringZoom);
+-     * adds the found tile to retain object and returns the tile if found
+-     *
+-     * @param {Coordinate} coord
+-     * @param {number} minCoveringZoom
+-     * @param {boolean} retain
+-     * @returns {Tile} tile object
+-     * @private
+-     */
+-    findLoadedParent: function(coord, minCoveringZoom, retain) {
+-        for (var z = coord.z - 1; z >= minCoveringZoom; z--) {
+-            coord = coord.parent(this.maxzoom);
+-            var tile = this._tiles[coord.id];
+-            if (tile && tile.loaded) {
+-                retain[coord.id] = true;
+-                return tile;
+-            }
+-            if (this._cache.has(coord.id)) {
+-                this.addTile(coord);
+-                retain[coord.id] = true;
+-                return this._tiles[coord.id];
+-            }
++    "circle-color": {
++      "type": "color",
++      "default": "#000000",
++      "doc": "The color of the circle.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.18.0"
+         }
++      }
+     },
+-
+-    /**
+-     * Resizes the tile cache based on the current viewport's size.
+-     *
+-     * Larger viewports use more tiles and need larger caches. Larger viewports
+-     * are more likely to be found on devices with more memory and on pages where
+-     * the map is more important.
+-     *
+-     * @private
+-     */
+-    updateCacheSize: function(transform) {
+-        var widthInTiles = Math.ceil(transform.width / transform.tileSize) + 1;
+-        var heightInTiles = Math.ceil(transform.height / transform.tileSize) + 1;
+-        var approxTilesInView = widthInTiles * heightInTiles;
+-        var commonZoomRange = 5;
+-        this._cache.setMaxSize(Math.floor(approxTilesInView * commonZoomRange));
++    "circle-blur": {
++      "type": "number",
++      "default": 0,
++      "doc": "Amount to blur the circle. 1 blurs the circle such that only the centerpoint is full opacity.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.20.0"
++        }
++      }
+     },
+-
+-    /**
+-     * Removes tiles that are outside the viewport and adds new tiles that
+-     * are inside the viewport.
+-     * @private
+-     */
+-    update: function(used, transform, fadeDuration) {
+-        var i;
+-        var coord;
+-        var tile;
+-
+-        this.updateCacheSize(transform);
+-
+-        // Determine the overzooming/underzooming amounts.
+-        var zoom = (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
+-        var minCoveringZoom = Math.max(zoom - TilePyramid.maxOverzooming, this.minzoom);
+-        var maxCoveringZoom = Math.max(zoom + TilePyramid.maxUnderzooming,  this.minzoom);
+-
+-        // Retain is a list of tiles that we shouldn't delete, even if they are not
+-        // the most ideal tile for the current viewport. This may include tiles like
+-        // parent or child tiles that are *already* loaded.
+-        var retain = {};
+-        var now = new Date().getTime();
+-
+-        // Covered is a list of retained tiles who's areas are full covered by other,
+-        // better, retained tiles. They are not drawn separately.
+-        this._coveredTiles = {};
+-
+-        var required = used ? this.coveringTiles(transform) : [];
+-        for (i = 0; i < required.length; i++) {
+-            coord = required[i];
+-            tile = this.addTile(coord);
+-
+-            retain[coord.id] = true;
+-
+-            if (tile.loaded)
+-                continue;
+-
+-            // The tile we require is not yet loaded.
+-            // Retain child or parent tiles that cover the same area.
+-            if (!this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
+-                this.findLoadedParent(coord, minCoveringZoom, retain);
+-            }
++    "circle-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the circle will be drawn.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.20.0"
++        }
++      }
++    },
++    "circle-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [0, 0],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "circle-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
++      "default": "map",
++      "requires": [
++        "circle-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        var parentsForFading = {};
+-
+-        var ids = Object.keys(retain);
+-        for (var k = 0; k < ids.length; k++) {
+-            var id = ids[k];
+-            coord = TileCoord.fromID(id);
+-            tile = this._tiles[id];
+-            if (tile && tile.timeAdded > now - (fadeDuration || 0)) {
+-                // This tile is still fading in. Find tiles to cross-fade with it.
+-                if (this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
+-                    retain[id] = true;
+-                }
+-                this.findLoadedParent(coord, minCoveringZoom, parentsForFading);
+-            }
++      }
++    },
++    "circle-pitch-scale": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "default": "map",
++      "doc": "Controls the scaling behavior of the circle when the map is pitched. The value `map` scales circles according to their apparent distance to the camera. The value `viewport` results in no pitch-related scaling.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
+         }
+-
+-        var fadedParent;
+-        for (fadedParent in parentsForFading) {
+-            if (!retain[fadedParent]) {
+-                // If a tile is only needed for fading, mark it as covered so that it isn't rendered on it's own.
+-                this._coveredTiles[fadedParent] = true;
+-            }
++      }
++    }
++  },
++  "paint_symbol": {
++    "icon-opacity": {
++      "doc": "The opacity at which the icon will be drawn.",
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-        for (fadedParent in parentsForFading) {
+-            retain[fadedParent] = true;
++      }
++    },
++    "icon-color": {
++      "type": "color",
++      "default": "#000000",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "The color of the icon. This can only be used with sdf icons.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        // Remove the tiles we don't need anymore.
+-        var remove = util.keysDifference(this._tiles, retain);
+-        for (i = 0; i < remove.length; i++) {
+-            this.removeTile(+remove[i]);
++      }
++    },
++    "icon-halo-color": {
++      "type": "color",
++      "default": "rgba(0, 0, 0, 0)",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "The color of the icon's halo. Icon halos can only be used with sdf icons.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        this.transform = transform;
++      }
+     },
+-
+-    /**
+-     * Add a tile, given its coordinate, to the pyramid.
+-     * @param {Coordinate} coord
+-     * @returns {Coordinate} the coordinate.
+-     * @private
+-     */
+-    addTile: function(coord) {
+-        var tile = this._tiles[coord.id];
+-        if (tile)
+-            return tile;
+-
+-        var wrapped = coord.wrapped();
+-        tile = this._tiles[wrapped.id];
+-
+-        if (!tile) {
+-            tile = this._cache.get(wrapped.id);
+-            if (tile && this._redoPlacement) {
+-                this._redoPlacement(tile);
+-            }
++    "icon-halo-width": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance of halo to the icon outline.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        if (!tile) {
+-            var zoom = coord.z;
+-            var overscaling = zoom > this.maxzoom ? Math.pow(2, zoom - this.maxzoom) : 1;
+-            tile = new Tile(wrapped, this.tileSize * overscaling, this.maxzoom);
+-            this._load(tile);
++      }
++    },
++    "icon-halo-blur": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Fade out the halo towards the outside.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        tile.uses++;
+-        this._tiles[coord.id] = tile;
+-        this._add(tile, coord);
+-
+-        return tile;
++      }
+     },
+-
+-    /**
+-     * Remove a tile, given its id, from the pyramid
+-     * @param {string|number} id tile id
+-     * @returns {undefined} nothing
+-     * @private
+-     */
+-    removeTile: function(id) {
+-        var tile = this._tiles[id];
+-        if (!tile)
+-            return;
+-
+-        tile.uses--;
+-        delete this._tiles[id];
+-        this._remove(tile);
+-
+-        if (tile.uses > 0)
+-            return;
+-
+-        if (tile.loaded) {
+-            this._cache.add(tile.coord.wrapped().id, tile);
+-        } else {
+-            this._abort(tile);
+-            this._unload(tile);
++    "icon-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    /**
+-     * Remove all tiles from this pyramid
+-     * @private
+-     */
+-    clearTiles: function() {
+-        for (var id in this._tiles)
+-            this.removeTile(id);
+-        this._cache.reset();
++    "icon-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
++      "default": "map",
++      "requires": [
++        "icon-image",
++        "icon-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    /**
+-     * Search through our current tiles and attempt to find the tiles that
+-     * cover the given bounds.
+-     * @param {Array<Coordinate>} queryGeometry coordinates of the corners of bounding rectangle
+-     * @returns {Array<Object>} result items have {tile, minX, maxX, minY, maxY}, where min/max bounding values are the given bounds transformed in into the coordinate space of this tile.
+-     * @private
+-     */
+-    tilesIn: function(queryGeometry) {
+-        var tileResults = {};
+-        var ids = this.orderedIDs();
+-
+-        var minX = Infinity;
+-        var minY = Infinity;
+-        var maxX = -Infinity;
+-        var maxY = -Infinity;
+-        var z = queryGeometry[0].zoom;
+-
+-        for (var k = 0; k < queryGeometry.length; k++) {
+-            var p = queryGeometry[k];
+-            minX = Math.min(minX, p.column);
+-            minY = Math.min(minY, p.row);
+-            maxX = Math.max(maxX, p.column);
+-            maxY = Math.max(maxY, p.row);
++    "text-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the text will be drawn.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        for (var i = 0; i < ids.length; i++) {
+-            var tile = this._tiles[ids[i]];
+-            var coord = TileCoord.fromID(ids[i]);
+-
+-            var tileSpaceBounds = [
+-                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(minX, minY, z)),
+-                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(maxX, maxY, z))
+-            ];
+-
+-            if (tileSpaceBounds[0].x < EXTENT && tileSpaceBounds[0].y < EXTENT &&
+-                tileSpaceBounds[1].x >= 0 && tileSpaceBounds[1].y >= 0) {
+-
+-                var tileSpaceQueryGeometry = [];
+-                for (var j = 0; j < queryGeometry.length; j++) {
+-                    tileSpaceQueryGeometry.push(coordinateToTilePoint(coord, tile.sourceMaxZoom, queryGeometry[j]));
+-                }
+-
+-                var tileResult = tileResults[tile.coord.id];
+-                if (tileResult === undefined) {
+-                    tileResult = tileResults[tile.coord.id] = {
+-                        tile: tile,
+-                        queryGeometry: [],
+-                        scale: Math.pow(2, this.transform.zoom - tile.coord.z)
+-                    };
+-                }
+-
+-                // Wrapped tiles share one tileResult object but can have multiple queryGeometry parts
+-                tileResult.queryGeometry.push(tileSpaceQueryGeometry);
+-            }
++      }
++    },
++    "text-color": {
++      "type": "color",
++      "doc": "The color with which the text will be drawn.",
++      "default": "#000000",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        var results = [];
+-        for (var t in tileResults) {
+-            results.push(tileResults[t]);
++      }
++    },
++    "text-halo-color": {
++      "type": "color",
++      "default": "rgba(0, 0, 0, 0)",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "The color of the text's halo, which helps it stand out from backgrounds.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-        return results;
+-    }
+-};
+-
+-/**
+- * Convert a coordinate to a point in a tile's coordinate space.
+- * @param {Coordinate} tileCoord
+- * @param {Coordinate} coord
+- * @returns {Object} position
+- * @private
+- */
+-function coordinateToTilePoint(tileCoord, sourceMaxZoom, coord) {
+-    var zoomedCoord = coord.zoomTo(Math.min(tileCoord.z, sourceMaxZoom));
+-    return {
+-        x: (zoomedCoord.column - (tileCoord.x + tileCoord.w * Math.pow(2, tileCoord.z))) * EXTENT,
+-        y: (zoomedCoord.row - tileCoord.y) * EXTENT
+-    };
+-
+-}
+-
+-function compareKeyZoom(a, b) {
+-    return (a % 32) - (b % 32);
+-}
+-
+-},{"../data/bucket":247,"../geo/coordinate":255,"../util/lru_cache":345,"../util/util":349,"./tile":280,"./tile_coord":281,"point-geometry":404}],283:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var Evented = require('../util/evented');
+-var Source = require('./source');
+-var normalizeURL = require('../util/mapbox').normalizeTileURL;
+-
+-module.exports = VectorTileSource;
+-
+-function VectorTileSource(options) {
+-    util.extend(this, util.pick(options, ['url', 'tileSize']));
+-    this._options = util.extend({ type: 'vector' }, options);
+-
+-    if (this.tileSize !== 512) {
+-        throw new Error('vector tile sources must have a tileSize of 512');
+-    }
+-
+-    Source._loadTileJSON.call(this, options);
+-}
+-
+-VectorTileSource.prototype = util.inherit(Evented, {
+-    minzoom: 0,
+-    maxzoom: 22,
+-    tileSize: 512,
+-    reparseOverscaled: true,
+-    _loaded: false,
+-    isTileClipped: true,
+-
+-    onAdd: function(map) {
+-        this.map = map;
++      }
+     },
+-
+-    loaded: function() {
+-        return this._pyramid && this._pyramid.loaded();
++    "text-halo-width": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance of halo to the font outline. Max text halo width is 1/4 of the font-size.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    update: function(transform) {
+-        if (this._pyramid) {
+-            this._pyramid.update(this.used, transform);
++    "text-halo-blur": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The halo's fadeout distance towards the outside.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    reload: function() {
+-        if (this._pyramid) {
+-            this._pyramid.reload();
++    "text-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    serialize: function() {
+-        return util.extend({}, this._options);
++    "text-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
++      "default": "map",
++      "requires": [
++        "text-field",
++        "text-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "paint_raster": {
++    "raster-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the image will be drawn.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    getVisibleCoordinates: Source._getVisibleCoordinates,
+-    getTile: Source._getTile,
+-
+-    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
+-    querySourceFeatures: Source._querySourceFeatures,
+-
+-    _loadTile: function(tile) {
+-        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
+-        var params = {
+-            url: normalizeURL(tile.coord.url(this.tiles, this.maxzoom), this.url),
+-            uid: tile.uid,
+-            coord: tile.coord,
+-            zoom: tile.coord.z,
+-            tileSize: this.tileSize * overscaling,
+-            source: this.id,
+-            overscaling: overscaling,
+-            angle: this.map.transform.angle,
+-            pitch: this.map.transform.pitch,
+-            showCollisionBoxes: this.map.showCollisionBoxes
+-        };
+-
+-        if (tile.workerID) {
+-            params.rawTileData = tile.rawTileData;
+-            this.dispatcher.send('reload tile', params, this._tileLoaded.bind(this, tile), tile.workerID);
+-        } else {
+-            tile.workerID = this.dispatcher.send('load tile', params, this._tileLoaded.bind(this, tile));
++    "raster-hue-rotate": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "units": "degrees",
++      "doc": "Rotates hues around the color wheel.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    _tileLoaded: function(tile, err, data) {
+-        if (tile.aborted)
+-            return;
+-
+-        if (err) {
+-            tile.errored = true;
+-            this.fire('tile.error', {tile: tile, error: err});
+-            return;
++    "raster-brightness-min": {
++      "type": "number",
++      "function": "interpolated",
++      "zoom-function": true,
++      "doc": "Increase or reduce the brightness of the image. The value is the minimum brightness.",
++      "default": 0,
++      "minimum": 0,
++      "maximum": 1,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        tile.loadVectorData(data, this.map.style);
+-
+-        if (tile.redoWhenDone) {
+-            tile.redoWhenDone = false;
+-            tile.redoPlacement(this);
++      }
++    },
++    "raster-brightness-max": {
++      "type": "number",
++      "function": "interpolated",
++      "zoom-function": true,
++      "doc": "Increase or reduce the brightness of the image. The value is the maximum brightness.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        this.fire('tile.load', {tile: tile});
+-        this.fire('tile.stats', data.bucketStats);
++      }
++    },
++    "raster-saturation": {
++      "type": "number",
++      "doc": "Increase or reduce the saturation of the image.",
++      "default": 0,
++      "minimum": -1,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _abortTile: function(tile) {
+-        tile.aborted = true;
+-        this.dispatcher.send('abort tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    "raster-contrast": {
++      "type": "number",
++      "doc": "Increase or reduce the contrast of the image.",
++      "default": 0,
++      "minimum": -1,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _addTile: function(tile) {
+-        this.fire('tile.add', {tile: tile});
++    "raster-fade-duration": {
++      "type": "number",
++      "default": 300,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "units": "milliseconds",
++      "doc": "Fade duration when a new tile is added.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "paint_background": {
++    "background-color": {
++      "type": "color",
++      "default": "#000000",
++      "doc": "The color with which the background will be drawn.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "background-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _removeTile: function(tile) {
+-        this.fire('tile.remove', {tile: tile});
++    "background-pattern": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "transition": true,
++      "doc": "Name of image in sprite to use for drawing an image background. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _unloadTile: function(tile) {
+-        tile.unloadVectorData(this.map.painter);
+-        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    "background-opacity": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "doc": "The opacity at which the background will be drawn.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "transition": {
++    "duration": {
++      "type": "number",
++      "default": 300,
++      "minimum": 0,
++      "units": "milliseconds",
++      "doc": "Time allotted for transitions to complete."
+     },
+-
+-    redoPlacement: Source.redoPlacement,
+-
+-    _redoTilePlacement: function(tile) {
+-        tile.redoPlacement(this);
++    "delay": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "units": "milliseconds",
++      "doc": "Length of time before a transition begins."
+     }
+-});
++  }
++}
+ 
+-},{"../util/evented":341,"../util/mapbox":346,"../util/util":349,"./source":279}],284:[function(require,module,exports){
++},{}],259:[function(require,module,exports){
++module.exports={"$version":8,"$root":{"version":{"required":true,"type":"enum","values":[8]},"name":{"type":"string"},"metadata":{"type":"*"},"center":{"type":"array","value":"number"},"zoom":{"type":"number"},"bearing":{"type":"number","default":0,"period":360,"units":"degrees"},"pitch":{"type":"number","default":0,"units":"degrees"},"sources":{"required":true,"type":"sources"},"sprite":{"type":"string"},"glyphs":{"type":"string"},"transition":{"type":"transition"},"layers":{"required":true,"type":"array","value":"layer"}},"sources":{"*":{"type":"source"}},"source":["source_tile","source_geojson","source_video","source_image"],"source_tile":{"type":{"required":true,"type":"enum","values":["vector","raster"]},"url":{"type":"string"},"tiles":{"type":"array","value":"string"},"minzoom":{"type":"number","default":0},"maxzoom":{"type":"number","default":22},"tileSize":{"type":"number","default":512,"units":"pixels"},"*":{"type":"*"}},"source_geojson":{"type":{"required":true,"type":"enum","values":["geojson"]},"data":{"type":"*"},"maxzoom":{"type":"number","default":14},"buffer":{"type":"number","default":64},"tolerance":{"type":"number","default":3},"cluster":{"type":"boolean","default":false},"clusterRadius":{"type":"number","default":400},"clusterMaxZoom":{"type":"number"}},"source_video":{"type":{"required":true,"type":"enum","values":["video"]},"urls":{"required":true,"type":"array","value":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"source_image":{"type":{"required":true,"type":"enum","values":["image"]},"url":{"required":true,"type":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"layer":{"id":{"type":"string","required":true},"type":{"type":"enum","values":["fill","line","symbol","circle","raster","background"]},"metadata":{"type":"*"},"ref":{"type":"string"},"source":{"type":"string"},"source-layer":{"type":"string"},"minzoom":{"type":"number","minimum":0,"maximum":22},"maxzoom":{"type":"number","minimum":0,"maximum":22},"interactive":{"type":"boolean","default":false},"filter":{"type":"filter"},"layout":{"type":"layout"},"paint":{"type":"paint"},"paint.*":{"type":"paint"}},"layout":["layout_fill","layout_line","layout_circle","layout_symbol","layout_raster","layout_background"],"layout_background":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_fill":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_circle":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_line":{"line-cap":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["butt","round","square"],"default":"butt"},"line-join":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["bevel","round","miter"],"default":"miter"},"line-miter-limit":{"type":"number","default":2,"function":"interpolated","zoom-function":true,"property-function":true,"requires":[{"line-join":"miter"}]},"line-round-limit":{"type":"number","default":1.05,"function":"interpolated","zoom-function":true,"property-function":true,"requires":[{"line-join":"round"}]},"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_symbol":{"symbol-placement":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["point","line"],"default":"point"},"symbol-spacing":{"type":"number","default":250,"minimum":1,"function":"interpolated","zoom-function":true,"property-function":true,"units":"pixels","requires":[{"symbol-placement":"line"}]},"symbol-avoid-edges":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false},"icon-allow-overlap":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image"]},"icon-ignore-placement":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image"]},"icon-optional":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image","text-field"]},"icon-rotation-alignment":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"viewport","requires":["icon-image"]},"icon-size":{"type":"number","default":1,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"requires":["icon-image"]},"icon-text-fit":{"type":"enum","function":"piecewise-constant"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++},{}],260:[function(require,module,exports){
+ 'use strict';
+ 
++var featureFilter = require('feature-filter');
++var Buffer = require('./buffer');
+ var util = require('../util/util');
+-var Tile = require('./tile');
+-var TileCoord = require('./tile_coord');
+-var LngLat = require('../geo/lng_lat');
+-var Point = require('point-geometry');
+-var Evented = require('../util/evented');
+-var ajax = require('../util/ajax');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
+-var Buffer = require('../data/buffer');
++var StructArrayType = require('../util/struct_array');
+ var VertexArrayObject = require('../render/vertex_array_object');
+ 
+-module.exports = VideoSource;
++module.exports = Bucket;
+ 
+ /**
+- * Create a Video data source instance given an options object
+- * @class VideoSource
+- * @param {Object} [options]
+- * @param {Array<string>} options.urls An array of URLs to video files
+- * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
+- * @example
+- * var sourceObj = new mapboxgl.VideoSource({
+- *    url: [
+- *        'https://www.mapbox.com/videos/baltimore-smoke.mp4',
+- *        'https://www.mapbox.com/videos/baltimore-smoke.webm'
+- *    ],
+- *    coordinates: [
+- *        [-76.54335737228394, 39.18579907229748],
+- *        [-76.52803659439087, 39.1838364847587],
+- *        [-76.5295386314392, 39.17683392507606],
+- *        [-76.54520273208618, 39.17876344106642]
+- *    ]
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
++ * Instantiate the appropriate subclass of `Bucket` for `options`.
++ * @private
++ * @param options See `Bucket` constructor options
++ * @returns {Bucket}
+  */
+-function VideoSource(options) {
+-    this.urls = options.urls;
+-    this.coordinates = options.coordinates;
+-
+-    ajax.getVideo(options.urls, function(err, video) {
+-        // @TODO handle errors via event.
+-        if (err) return;
+-
+-        this.video = video;
+-        this.video.loop = true;
+-
+-        var loopID;
+-
+-        // start repainting when video starts playing
+-        this.video.addEventListener('playing', function() {
+-            loopID = this.map.style.animationLoop.set(Infinity);
+-            this.map._rerender();
+-        }.bind(this));
+-
+-        // stop repainting when video stops
+-        this.video.addEventListener('pause', function() {
+-            this.map.style.animationLoop.cancel(loopID);
+-        }.bind(this));
+-
+-        this._loaded = true;
+-
+-        if (this.map) {
+-            this.video.play();
+-            this.setCoordinates(options.coordinates);
+-        }
+-    }.bind(this));
+-}
++Bucket.create = function(options) {
++    var Classes = {
++        fill: require('./bucket/fill_bucket'),
++        line: require('./bucket/line_bucket'),
++        circle: require('./bucket/circle_bucket'),
++        symbol: require('./bucket/symbol_bucket')
++    };
++    return new Classes[options.layer.type](options);
++};
+ 
+-VideoSource.prototype = util.inherit(Evented, /** @lends VideoSource.prototype */{
+-    roundZoom: true,
+ 
+-    /**
+-     * Return the HTML video element.
+-     *
+-     * @returns {Object}
+-     */
+-    getVideo: function() {
+-        return this.video;
+-    },
++/**
++ * The maximum extent of a feature that can be safely stored in the buffer.
++ * In practice, all features are converted to this extent before being added.
++ *
++ * Positions are stored as signed 16bit integers.
++ * One bit is lost for signedness to support featuers extending past the left edge of the tile.
++ * One bit is lost because the line vertex buffer packs 1 bit of other data into the int.
++ * One bit is lost to support features extending past the extent on the right edge of the tile.
++ * This leaves us with 2^13 = 8192
++ *
++ * @private
++ * @readonly
++ */
++Bucket.EXTENT = 8192;
+ 
+-    onAdd: function(map) {
+-        this.map = map;
+-        if (this.video) {
+-            this.video.play();
+-            this.setCoordinates(this.coordinates);
+-        }
+-    },
++/**
++ * The `Bucket` class is the single point of knowledge about turning vector
++ * tiles into WebGL buffers.
++ *
++ * `Bucket` is an abstract class. A subclass exists for each Mapbox GL
++ * style spec layer type. Because `Bucket` is an abstract class,
++ * instances should be created via the `Bucket.create` method.
++ *
++ * @class Bucket
++ * @private
++ * @param options
++ * @param {number} options.zoom Zoom level of the buffers being built. May be
++ *     a fractional zoom level.
++ * @param options.layer A Mapbox GL style layer object
++ * @param {Object.<string, Buffer>} options.buffers The set of `Buffer`s being
++ *     built for this tile. This object facilitates sharing of `Buffer`s be
++       between `Bucket`s.
++ */
++function Bucket(options) {
++    this.zoom = options.zoom;
++    this.overscaling = options.overscaling;
++    this.layer = options.layer;
++    this.childLayers = options.childLayers;
+ 
+-    /**
+-     * Update video coordinates and rerender map
+-     *
+-     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
+-     * @returns {VideoSource} this
+-     */
+-    setCoordinates: function(coordinates) {
+-        this.coordinates = coordinates;
++    this.type = this.layer.type;
++    this.features = [];
++    this.id = this.layer.id;
++    this.index = options.index;
++    this.sourceLayer = this.layer.sourceLayer;
++    this.sourceLayerIndex = options.sourceLayerIndex;
++    this.minZoom = this.layer.minzoom;
++    this.maxZoom = this.layer.maxzoom;
+ 
+-        // Calculate which mercator tile is suitable for rendering the video in
+-        // and create a buffer with the corner coordinates. These coordinates
+-        // may be outside the tile, because raster tiles aren't clipped when rendering.
++    this.paintAttributes = createPaintAttributes(this);
+ 
+-        var map = this.map;
+-        var cornerZ0Coords = coordinates.map(function(coord) {
+-            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
+-        });
++    if (options.arrays) {
++        var childLayers = this.childLayers;
++        this.bufferGroups = util.mapObject(options.arrays, function(programArrayGroups, programName) {
++            return programArrayGroups.map(function(programArrayGroup) {
+ 
+-        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
+-        centerCoord.column = Math.round(centerCoord.column);
+-        centerCoord.row = Math.round(centerCoord.row);
++                var group = util.mapObject(programArrayGroup, function(arrays, layoutOrPaint) {
++                    return util.mapObject(arrays, function(array, name) {
++                        var arrayType = options.arrayTypes[programName][layoutOrPaint][name];
++                        var type = (arrayType.members.length && arrayType.members[0].name === 'vertices' ? Buffer.BufferType.ELEMENT : Buffer.BufferType.VERTEX);
++                        return new Buffer(array, arrayType, type);
++                    });
++                });
+ 
++                group.vaos = {};
++                if (group.layout.element2) group.secondVaos = {};
++                for (var l = 0; l < childLayers.length; l++) {
++                    var layerName = childLayers[l].id;
++                    group.vaos[layerName] = new VertexArrayObject();
++                    if (group.layout.element2) group.secondVaos[layerName] = new VertexArrayObject();
++                }
+ 
+-        var tileCoords = cornerZ0Coords.map(function(coord) {
+-            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
+-            return new Point(
+-                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
+-                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
++                return group;
++            });
+         });
++    }
++}
+ 
+-        var maxInt16 = 32767;
+-        var array = new RasterBoundsArray();
+-        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
+-        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
+-        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
+-        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
+-
+-        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
+-        this.tile.buckets = {};
++/**
++ * Build the buffers! Features are set directly to the `features` property.
++ * @private
++ */
++Bucket.prototype.populateBuffers = function() {
++    this.createArrays();
++    this.recalculateStyleLayers();
+ 
+-        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
+-        this.tile.boundsVAO = new VertexArrayObject();
++    for (var i = 0; i < this.features.length; i++) {
++        this.addFeature(this.features[i]);
++    }
+ 
+-        this.fire('change');
++    this.trimArrays();
++};
+ 
+-        return this;
+-    },
++/**
++ * Check if there is enough space available in the current element group for
++ * `vertexLength` vertices. If not, append a new elementGroup. Should be called
++ * by `populateBuffers` and its callees.
++ * @private
++ * @param {string} programName the name of the program associated with the buffer that will receive the vertices
++ * @param {number} vertexLength The number of vertices that will be inserted to the buffer.
++ */
++Bucket.prototype.makeRoomFor = function(programName, numVertices) {
++    var groups = this.arrayGroups[programName];
++    var currentGroup = groups.length && groups[groups.length - 1];
+ 
+-    loaded: function() {
+-        return this.video && this.video.readyState >= 2;
+-    },
++    if (!currentGroup || currentGroup.layout.vertex.length + numVertices > 65535) {
+ 
+-    update: function() {
+-        // noop
+-    },
++        var arrayTypes = this.arrayTypes[programName];
++        var VertexArrayType = arrayTypes.layout.vertex;
++        var ElementArrayType = arrayTypes.layout.element;
++        var ElementArrayType2 = arrayTypes.layout.element2;
+ 
+-    reload: function() {
+-        // noop
+-    },
++        currentGroup = {
++            index: groups.length,
++            layout: {},
++            paint: {}
++        };
+ 
+-    prepare: function() {
+-        if (!this._loaded) return;
+-        if (this.video.readyState < 2) return; // not enough data for current position
++        currentGroup.layout.vertex = new VertexArrayType();
++        if (ElementArrayType) currentGroup.layout.element = new ElementArrayType();
++        if (ElementArrayType2) currentGroup.layout.element2 = new ElementArrayType2();
+ 
+-        var gl = this.map.painter.gl;
+-        if (!this.tile.texture) {
+-            this.tile.texture = gl.createTexture();
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
+-        } else {
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
++        for (var i = 0; i < this.childLayers.length; i++) {
++            var layerName = this.childLayers[i].id;
++            var PaintVertexArrayType = arrayTypes.paint[layerName];
++            currentGroup.paint[layerName] = new PaintVertexArrayType();
+         }
+ 
+-        this._currentTime = this.video.currentTime;
+-    },
+-
+-    getVisibleCoordinates: function() {
+-        if (this.tile) return [this.tile.coord];
+-        else return [];
+-    },
+-
+-    getTile: function() {
+-        return this.tile;
+-    },
+-
+-    serialize: function() {
+-        return {
+-            type: 'video',
+-            urls: this.urls,
+-            coordinates: this.coordinates
+-        };
++        groups.push(currentGroup);
+     }
+-});
+-
+-},{"../data/bucket":247,"../data/buffer":252,"../geo/lng_lat":256,"../render/draw_raster":267,"../render/vertex_array_object":273,"../util/ajax":334,"../util/evented":341,"../util/util":349,"./tile":280,"./tile_coord":281,"point-geometry":404}],285:[function(require,module,exports){
+-'use strict';
+-
+-var Actor = require('../util/actor');
+-var WorkerTile = require('./worker_tile');
+-var StyleLayer = require('../style/style_layer');
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var vt = require('vector-tile');
+-var Protobuf = require('pbf');
+-var supercluster = require('supercluster');
+-
+-var geojsonvt = require('geojson-vt');
+-var rewind = require('geojson-rewind');
+-var GeoJSONWrapper = require('./geojson_wrapper');
+-var vtpbf = require('vt-pbf');
+ 
+-module.exports = function(self) {
+-    return new Worker(self);
++    return currentGroup;
+ };
+ 
+-function Worker(self) {
+-    this.self = self;
+-    this.actor = new Actor(self, this);
+-    this.loading = {};
++/**
++ * Start using a new shared `buffers` object and recreate instances of `Buffer`
++ * as necessary.
++ * @private
++ */
++Bucket.prototype.createArrays = function() {
++    this.arrayGroups = {};
++    this.arrayTypes = {};
+ 
+-    this.loaded = {};
+-    this.geoJSONIndexes = {};
+-}
++    for (var programName in this.programInterfaces) {
++        var programInterface = this.programInterfaces[programName];
++        var programArrayTypes = this.arrayTypes[programName] = { layout: {}, paint: {} };
++        this.arrayGroups[programName] = [];
+ 
+-util.extend(Worker.prototype, {
+-    'set layers': function(layers) {
+-        this.layers = {};
+-        var that = this;
++        if (programInterface.vertexBuffer) {
++            var VertexArrayType = new StructArrayType({
++                members: this.programInterfaces[programName].layoutAttributes,
++                alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
++            });
+ 
+-        // Filter layers and create an id -> layer map
+-        var childLayerIndicies = [];
+-        for (var i = 0; i < layers.length; i++) {
+-            var layer = layers[i];
+-            if (layer.type === 'fill' || layer.type === 'line' || layer.type === 'circle' || layer.type === 'symbol') {
+-                if (layer.ref) {
+-                    childLayerIndicies.push(i);
+-                } else {
+-                    setLayer(layer);
+-                }
+-            }
+-        }
++            programArrayTypes.layout.vertex = VertexArrayType;
+ 
+-        // Create an instance of StyleLayer per layer
+-        for (var j = 0; j < childLayerIndicies.length; j++) {
+-            setLayer(layers[childLayerIndicies[j]]);
+-        }
++            var layerPaintAttributes = this.paintAttributes[programName];
++            for (var layerName in layerPaintAttributes) {
++                var PaintVertexArrayType = new StructArrayType({
++                    members: layerPaintAttributes[layerName].attributes,
++                    alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
++                });
+ 
+-        function setLayer(serializedLayer) {
+-            var styleLayer = StyleLayer.create(
+-                serializedLayer,
+-                serializedLayer.ref && that.layers[serializedLayer.ref]
+-            );
+-            styleLayer.updatePaintTransitions({}, {transition: false});
+-            that.layers[styleLayer.id] = styleLayer;
++                programArrayTypes.paint[layerName] = PaintVertexArrayType;
++            }
+         }
+ 
+-        this.layerFamilies = createLayerFamilies(this.layers);
+-    },
+-
+-    'update layers': function(layers) {
+-        var that = this;
+-        var id;
+-        var layer;
+-
+-        // Update ref parents
+-        for (id in layers) {
+-            layer = layers[id];
+-            if (layer.ref) updateLayer(layer);
++        if (programInterface.elementBuffer) {
++            var ElementArrayType = createElementBufferType(programInterface.elementBufferComponents);
++            programArrayTypes.layout.element = ElementArrayType;
+         }
+ 
+-        // Update ref children
+-        for (id in layers) {
+-            layer = layers[id];
+-            if (!layer.ref) updateLayer(layer);
++        if (programInterface.elementBuffer2) {
++            var ElementArrayType2 = createElementBufferType(programInterface.elementBuffer2Components);
++            programArrayTypes.layout.element2 = ElementArrayType2;
+         }
++    }
++};
+ 
+-        function updateLayer(layer) {
+-            var refLayer = that.layers[layer.ref];
+-            if (that.layers[layer.id]) {
+-                that.layers[layer.id].set(layer, refLayer);
+-            } else {
+-                that.layers[layer.id] = StyleLayer.create(layer, refLayer);
++Bucket.prototype.destroy = function(gl) {
++    for (var programName in this.bufferGroups) {
++        var programBufferGroups = this.bufferGroups[programName];
++        for (var i = 0; i < programBufferGroups.length; i++) {
++            var programBuffers = programBufferGroups[i];
++            for (var paintBuffer in programBuffers.paint) {
++                programBuffers.paint[paintBuffer].destroy(gl);
++            }
++            for (var layoutBuffer in programBuffers.layout) {
++                programBuffers.layout[layoutBuffer].destroy(gl);
++            }
++            for (var j in programBuffers.vaos) {
++                programBuffers.vaos[j].destroy(gl);
++            }
++            for (var k in programBuffers.secondVaos) {
++                programBuffers.secondVaos[k].destroy(gl);
+             }
+-            that.layers[layer.id].updatePaintTransitions({}, {transition: false});
+         }
++    }
+ 
+-        this.layerFamilies = createLayerFamilies(this.layers);
+-    },
+-
+-    'load tile': function(params, callback) {
+-        var source = params.source,
+-            uid = params.uid;
+-
+-        if (!this.loading[source])
+-            this.loading[source] = {};
+-
+-
+-        var tile = this.loading[source][uid] = new WorkerTile(params);
++};
+ 
+-        tile.xhr = ajax.getArrayBuffer(params.url, done.bind(this));
++Bucket.prototype.trimArrays = function() {
++    for (var programName in this.arrayGroups) {
++        var programArrays = this.arrayGroups[programName];
++        for (var paintArray in programArrays.paint) {
++            programArrays.paint[paintArray].trim();
++        }
++        for (var layoutArray in programArrays.layout) {
++            programArrays.layout[layoutArray].trim();
++        }
++    }
++};
+ 
+-        function done(err, data) {
+-            delete this.loading[source][uid];
++Bucket.prototype.setUniforms = function(gl, programName, program, layer, globalProperties) {
++    var uniforms = this.paintAttributes[programName][layer.id].uniforms;
++    for (var i = 0; i < uniforms.length; i++) {
++        var uniform = uniforms[i];
++        var uniformLocation = program[uniform.name];
++        gl['uniform' + uniform.components + 'fv'](uniformLocation, uniform.getValue(layer, globalProperties));
++    }
++};
+ 
+-            if (err) return callback(err);
++Bucket.prototype.serialize = function() {
++    return {
++        layerId: this.layer.id,
++        zoom: this.zoom,
++        arrays: util.mapObject(this.arrayGroups, function(programArrayGroups) {
++            return programArrayGroups.map(function(arrayGroup) {
++                return util.mapObject(arrayGroup, function(arrays) {
++                    return util.mapObject(arrays, function(array) {
++                        return array.serialize();
++                    });
++                });
++            });
++        }),
++        arrayTypes: util.mapObject(this.arrayTypes, function(programArrayTypes) {
++            return util.mapObject(programArrayTypes, function(arrayTypes) {
++                return util.mapObject(arrayTypes, function(arrayType) {
++                    return arrayType.serialize();
++                });
++            });
++        }),
+ 
+-            tile.data = new vt.VectorTile(new Protobuf(new Uint8Array(data)));
+-            tile.parse(tile.data, this.layerFamilies, this.actor, data, callback);
++        childLayerIds: this.childLayers.map(function(layer) {
++            return layer.id;
++        })
++    };
++};
+ 
+-            this.loaded[source] = this.loaded[source] || {};
+-            this.loaded[source][uid] = tile;
+-        }
+-    },
++Bucket.prototype.createFilter = function() {
++    if (!this.filter) {
++        this.filter = featureFilter(this.layer.filter);
++    }
++};
+ 
+-    'reload tile': function(params, callback) {
+-        var loaded = this.loaded[params.source],
+-            uid = params.uid;
+-        if (loaded && loaded[uid]) {
+-            var tile = loaded[uid];
+-            tile.parse(tile.data, this.layerFamilies, this.actor, params.rawTileData, callback);
+-        }
+-    },
++var FAKE_ZOOM_HISTORY = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
++Bucket.prototype.recalculateStyleLayers = function() {
++    for (var i = 0; i < this.childLayers.length; i++) {
++        this.childLayers[i].recalculate(this.zoom, FAKE_ZOOM_HISTORY);
++    }
++};
+ 
+-    'abort tile': function(params) {
+-        var loading = this.loading[params.source],
+-            uid = params.uid;
+-        if (loading && loading[uid]) {
+-            loading[uid].xhr.abort();
+-            delete loading[uid];
+-        }
+-    },
++Bucket.prototype.getProgramMacros = function(programInterface, layer) {
++    var macros = [];
++    var attributes = this.paintAttributes[programInterface][layer.id].attributes;
++    for (var i = 0; i < attributes.length; i++) {
++        var attribute = attributes[i];
++        macros.push('ATTRIBUTE_' + (attribute.isFunction ? 'ZOOM_FUNCTION_' : '') + attribute.name.toUpperCase());
++    }
++    return macros;
++};
+ 
+-    'remove tile': function(params) {
+-        var loaded = this.loaded[params.source],
+-            uid = params.uid;
+-        if (loaded && loaded[uid]) {
+-            delete loaded[uid];
+-        }
+-    },
++Bucket.prototype.addPaintAttributes = function(interfaceName, globalProperties, featureProperties, startGroup, startIndex) {
++    for (var l = 0; l < this.childLayers.length; l++) {
++        var layer = this.childLayers[l];
++        var groups = this.arrayGroups[interfaceName];
++        for (var g = startGroup.index; g < groups.length; g++) {
++            var group = groups[g];
++            var length = group.layout.vertex.length;
++            var vertexArray = group.paint[layer.id];
++            vertexArray.resize(length);
+ 
+-    'redo placement': function(params, callback) {
+-        var loaded = this.loaded[params.source],
+-            loading = this.loading[params.source],
+-            uid = params.uid;
++            var attributes = this.paintAttributes[interfaceName][layer.id].attributes;
++            for (var m = 0; m < attributes.length; m++) {
++                var attribute = attributes[m];
+ 
+-        if (loaded && loaded[uid]) {
+-            var tile = loaded[uid];
+-            var result = tile.redoPlacement(params.angle, params.pitch, params.showCollisionBoxes);
++                var value = attribute.getValue(layer, globalProperties, featureProperties);
++                var multiplier = attribute.multiplier || 1;
++                var components = attribute.components || 1;
+ 
+-            if (result.result) {
+-                callback(null, result.result, result.transferables);
++                for (var i = startIndex; i < length; i++) {
++                    var vertex = vertexArray.get(i);
++                    for (var c = 0; c < components; c++) {
++                        var memberName = components > 1 ? (attribute.name + c) : attribute.name;
++                        vertex[memberName] = value[c] * multiplier;
++                    }
++                }
+             }
+-
+-        } else if (loading && loading[uid]) {
+-            loading[uid].angle = params.angle;
+         }
+-    },
++    }
++};
+ 
+-    'parse geojson': function(params, callback) {
+-        var indexData = function(err, data) {
+-            rewind(data, true);
+-            if (err) return callback(err);
+-            if (typeof data != 'object') {
+-                return callback(new Error("Input data is not a valid GeoJSON object."));
+-            }
+-            try {
+-                this.geoJSONIndexes[params.source] = params.cluster ?
+-                    supercluster(params.superclusterOptions).load(data.features) :
+-                    geojsonvt(data, params.geojsonVtOptions);
+-            } catch (err) {
+-                return callback(err);
+-            }
+-            callback(null);
+-        }.bind(this);
++function createElementBufferType(components) {
++    return new StructArrayType({
++        members: [{
++            type: Buffer.ELEMENT_ATTRIBUTE_TYPE,
++            name: 'vertices',
++            components: components || 3
++        }]
++    });
++}
+ 
+-        // Not, because of same origin issues, urls must either include an
+-        // explicit origin or absolute path.
+-        // ie: /foo/bar.json or http://example.com/bar.json
+-        // but not ../foo/bar.json
+-        if (params.url) {
+-            ajax.getJSON(params.url, indexData);
+-        } else if (typeof params.data === 'string') {
+-            indexData(null, JSON.parse(params.data));
+-        } else {
+-            return callback(new Error("Input data is not a valid GeoJSON object."));
+-        }
+-    },
++function createPaintAttributes(bucket) {
++    var attributes = {};
++    for (var interfaceName in bucket.programInterfaces) {
++        var layerPaintAttributes = attributes[interfaceName] = {};
+ 
+-    'load geojson tile': function(params, callback) {
+-        var source = params.source,
+-            coord = params.coord;
++        for (var c = 0; c < bucket.childLayers.length; c++) {
++            var childLayer = bucket.childLayers[c];
++            layerPaintAttributes[childLayer.id] = { attributes: [], uniforms: [] };
++        }
+ 
+-        if (!this.geoJSONIndexes[source]) return callback(null, null); // we couldn't load the file
++        var interface_ = bucket.programInterfaces[interfaceName];
++        if (!interface_.paintAttributes) continue;
++        for (var i = 0; i < interface_.paintAttributes.length; i++) {
++            var attribute = interface_.paintAttributes[i];
+ 
+-        // console.time('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
++            for (var j = 0; j < bucket.childLayers.length; j++) {
++                var layer = bucket.childLayers[j];
++                var paintAttributes = layerPaintAttributes[layer.id];
+ 
+-        var geoJSONTile = this.geoJSONIndexes[source].getTile(Math.min(coord.z, params.maxZoom), coord.x, coord.y);
++                if (layer.isPaintValueFeatureConstant(attribute.paintProperty)) {
++                    paintAttributes.uniforms.push(attribute);
++                } else if (layer.isPaintValueZoomConstant(attribute.paintProperty)) {
++                    paintAttributes.attributes.push(attribute);
++                } else {
+ 
+-        // console.timeEnd('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
++                    var zoomLevels = layer.getPaintValueStopZoomLevels(attribute.paintProperty);
+ 
+-        // if (!geoJSONTile) console.log('not found', this.geoJSONIndexes[source], coord);
++                    // Pick the index of the first offset to add to the buffers.
++                    // Find the four closest stops, ideally with two on each side of the zoom level.
++                    var numStops = 0;
++                    while (numStops < zoomLevels.length && zoomLevels[numStops] < bucket.zoom) numStops++;
++                    var stopOffset = Math.max(0, Math.min(zoomLevels.length - 4, numStops - 2));
+ 
+-        var tile = geoJSONTile ? new WorkerTile(params) : undefined;
++                    var fourZoomLevels = [];
++                    for (var s = 0; s < 4; s++) {
++                        fourZoomLevels.push(zoomLevels[Math.min(stopOffset + s, zoomLevels.length - 1)]);
++                    }
+ 
+-        this.loaded[source] = this.loaded[source] || {};
+-        this.loaded[source][params.uid] = tile;
++                    var components = attribute.components;
++                    if (components === 1) {
++                        paintAttributes.attributes.push(util.extend({}, attribute, {
++                            getValue: createFunctionGetValue(attribute, fourZoomLevels),
++                            isFunction: true,
++                            components: components * 4
++                        }));
++                    } else {
++                        for (var k = 0; k < 4; k++) {
++                            paintAttributes.attributes.push(util.extend({}, attribute, {
++                                getValue: createFunctionGetValue(attribute, [fourZoomLevels[k]]),
++                                isFunction: true,
++                                name: attribute.name + k
++                            }));
++                        }
++                    }
+ 
+-        if (geoJSONTile) {
+-            var geojsonWrapper = new GeoJSONWrapper(geoJSONTile.features);
+-            geojsonWrapper.name = '_geojsonTileLayer';
+-            var rawTileData = vtpbf({ layers: { '_geojsonTileLayer': geojsonWrapper }}).buffer;
+-            tile.parse(geojsonWrapper, this.layerFamilies, this.actor, rawTileData, callback);
+-        } else {
+-            return callback(null, null); // nothing in the given tile
++                    paintAttributes.uniforms.push(util.extend({}, attribute, {
++                        name: 'u_' + attribute.name.slice(2) + '_t',
++                        getValue: createGetUniform(attribute, stopOffset),
++                        components: 1
++                    }));
++                }
++            }
+         }
+     }
+-});
+-
+-function createLayerFamilies(layers) {
+-    var families = {};
+-
+-    for (var layerId in layers) {
+-        var layer = layers[layerId];
+-        var parentLayerId = layer.ref || layer.id;
+-        var parentLayer = layers[parentLayerId];
+-
+-        if (parentLayer.layout && parentLayer.layout.visibility === 'none') continue;
++    return attributes;
++}
+ 
+-        families[parentLayerId] = families[parentLayerId] || [];
+-        if (layerId === parentLayerId) {
+-            families[parentLayerId].unshift(layer);
++function createFunctionGetValue(attribute, stopZoomLevels) {
++    return function(layer, globalProperties, featureProperties) {
++        if (stopZoomLevels.length === 1) {
++            // return one multi-component value like color0
++            return attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevels[0] }), featureProperties);
+         } else {
+-            families[parentLayerId].push(layer);
++            // pack multiple single-component values into a four component attribute
++            var values = [];
++            for (var z = 0; z < stopZoomLevels.length; z++) {
++                var stopZoomLevel = stopZoomLevels[z];
++                values.push(attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevel }), featureProperties)[0]);
++            }
++            return values;
+         }
+-    }
++    };
++}
+ 
+-    return families;
++function createGetUniform(attribute, stopOffset) {
++    return function(layer, globalProperties) {
++        // stopInterp indicates which stops need to be interpolated.
++        // If stopInterp is 3.5 then interpolate half way between stops 3 and 4.
++        var stopInterp = layer.getPaintInterpolationT(attribute.paintProperty, globalProperties.zoom);
++        // We can only store four stop values in the buffers. stopOffset is the number of stops that come
++        // before the stops that were added to the buffers.
++        return [Math.max(0, Math.min(4, stopInterp - stopOffset))];
++    };
+ }
+ 
+-},{"../style/style_layer":293,"../util/actor":333,"../util/ajax":334,"../util/util":349,"./geojson_wrapper":275,"./worker_tile":286,"geojson-rewind":353,"geojson-vt":358,"pbf":402,"supercluster":407,"vector-tile":413,"vt-pbf":417}],286:[function(require,module,exports){
++},{"../render/vertex_array_object":286,"../util/struct_array":360,"../util/util":362,"./bucket/circle_bucket":261,"./bucket/fill_bucket":262,"./bucket/line_bucket":263,"./bucket/symbol_bucket":264,"./buffer":265,"feature-filter":99}],261:[function(require,module,exports){
+ 'use strict';
+ 
+-var FeatureIndex = require('../data/feature_index');
+-var CollisionTile = require('../symbol/collision_tile');
+-var Bucket = require('../data/bucket');
+-var CollisionBoxArray = require('../symbol/collision_box');
+-var DictionaryCoder = require('../util/dictionary_coder');
++var Bucket = require('../bucket');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
++var EXTENT = Bucket.EXTENT;
+ 
+-module.exports = WorkerTile;
++module.exports = CircleBucket;
+ 
+-function WorkerTile(params) {
+-    this.coord = params.coord;
+-    this.uid = params.uid;
+-    this.zoom = params.zoom;
+-    this.tileSize = params.tileSize;
+-    this.source = params.source;
+-    this.overscaling = params.overscaling;
+-    this.angle = params.angle;
+-    this.pitch = params.pitch;
+-    this.showCollisionBoxes = params.showCollisionBoxes;
++/**
++ * Circles are represented by two triangles.
++ *
++ * Each corner has a pos that is the center of the circle and an extrusion
++ * vector that is where it points.
++ * @private
++ */
++function CircleBucket() {
++    Bucket.apply(this, arguments);
+ }
+ 
+-WorkerTile.prototype.parse = function(data, layerFamilies, actor, rawTileData, callback) {
++CircleBucket.prototype = util.inherit(Bucket, {});
+ 
+-    this.status = 'parsing';
+-    this.data = data;
++CircleBucket.prototype.addCircleVertex = function(vertexArray, x, y, extrudeX, extrudeY) {
++    return vertexArray.emplaceBack(
++            (x * 2) + ((extrudeX + 1) / 2),
++            (y * 2) + ((extrudeY + 1) / 2));
++};
+ 
+-    this.collisionBoxArray = new CollisionBoxArray();
+-    var collisionTile = new CollisionTile(this.angle, this.pitch, this.collisionBoxArray);
+-    var featureIndex = new FeatureIndex(this.coord, this.overscaling, collisionTile, data.layers);
+-    var sourceLayerCoder = new DictionaryCoder(data.layers ? Object.keys(data.layers).sort() : ['_geojsonTileLayer']);
++CircleBucket.prototype.programInterfaces = {
++    circle: {
++        vertexBuffer: true,
++        elementBuffer: true,
+ 
+-    var stats = { _total: 0 };
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }],
++        paintAttributes: [{
++            name: 'a_color',
++            components: 4,
++            type: 'Uint8',
++            getValue: function(layer, globalProperties, featureProperties) {
++                return util.premultiply(layer.getPaintValue("circle-color", globalProperties, featureProperties));
++            },
++            multiplier: 255,
++            paintProperty: 'circle-color'
++        }, {
++            name: 'a_radius',
++            components: 1,
++            type: 'Uint16',
++            isLayerConstant: false,
++            getValue: function(layer, globalProperties, featureProperties) {
++                return [layer.getPaintValue("circle-radius", globalProperties, featureProperties)];
++            },
++            multiplier: 10,
++            paintProperty: 'circle-radius'
++        }]
++    }
++};
+ 
+-    var tile = this;
+-    var bucketsById = {};
+-    var bucketsBySourceLayer = {};
+-    var i;
+-    var layer;
+-    var sourceLayerId;
+-    var bucket;
++CircleBucket.prototype.addFeature = function(feature) {
++    var globalProperties = {zoom: this.zoom};
++    var geometries = loadGeometry(feature);
+ 
+-    // Map non-ref layers to buckets.
+-    var bucketIndex = 0;
+-    for (var layerId in layerFamilies) {
+-        layer = layerFamilies[layerId][0];
++    var startGroup = this.makeRoomFor('circle', 0);
++    var startIndex = startGroup.layout.vertex.length;
+ 
+-        if (layer.source !== this.source) continue;
+-        if (layer.ref) continue;
+-        if (layer.minzoom && this.zoom < layer.minzoom) continue;
+-        if (layer.maxzoom && this.zoom >= layer.maxzoom) continue;
+-        if (layer.layout && layer.layout.visibility === 'none') continue;
+-        if (data.layers && !data.layers[layer.sourceLayer]) continue;
++    for (var j = 0; j < geometries.length; j++) {
++        for (var k = 0; k < geometries[j].length; k++) {
+ 
+-        bucket = Bucket.create({
+-            layer: layer,
+-            index: bucketIndex++,
+-            childLayers: layerFamilies[layerId],
+-            zoom: this.zoom,
+-            overscaling: this.overscaling,
+-            showCollisionBoxes: this.showCollisionBoxes,
+-            collisionBoxArray: this.collisionBoxArray,
+-            sourceLayerIndex: sourceLayerCoder.encode(layer.sourceLayer || '_geojsonTileLayer')
+-        });
+-        bucket.createFilter();
++            var x = geometries[j][k].x;
++            var y = geometries[j][k].y;
+ 
+-        bucketsById[layer.id] = bucket;
++            // Do not include points that are outside the tile boundaries.
++            if (x < 0 || x >= EXTENT || y < 0 || y >= EXTENT) continue;
+ 
+-        if (data.layers) { // vectortile
+-            sourceLayerId = layer.sourceLayer;
+-            bucketsBySourceLayer[sourceLayerId] = bucketsBySourceLayer[sourceLayerId] || {};
+-            bucketsBySourceLayer[sourceLayerId][layer.id] = bucket;
+-        }
+-    }
++            // this geometry will be of the Point type, and we'll derive
++            // two triangles from it.
++            //
++            // ┌─────────┐
++            // │ 3     2 │
++            // │         │
++            // │ 0     1 │
++            // └─────────┘
+ 
+-    // read each layer, and sort its features into buckets
+-    if (data.layers) { // vectortile
+-        for (sourceLayerId in bucketsBySourceLayer) {
+-            layer = data.layers[sourceLayerId];
+-            if (layer) {
+-                sortLayerIntoBuckets(layer, bucketsBySourceLayer[sourceLayerId]);
+-            }
+-        }
+-    } else { // geojson
+-        sortLayerIntoBuckets(data, bucketsById);
+-    }
++            var group = this.makeRoomFor('circle', 4);
++            var vertexArray = group.layout.vertex;
+ 
+-    function sortLayerIntoBuckets(layer, buckets) {
+-        for (var i = 0; i < layer.length; i++) {
+-            var feature = layer.feature(i);
+-            feature.index = i;
+-            for (var id in buckets) {
+-                if (buckets[id].filter(feature))
+-                    buckets[id].features.push(feature);
+-            }
++            var index = this.addCircleVertex(vertexArray, x, y, -1, -1);
++            this.addCircleVertex(vertexArray, x, y, 1, -1);
++            this.addCircleVertex(vertexArray, x, y, 1, 1);
++            this.addCircleVertex(vertexArray, x, y, -1, 1);
++
++            group.layout.element.emplaceBack(index, index + 1, index + 2);
++            group.layout.element.emplaceBack(index, index + 3, index + 2);
+         }
+     }
+ 
+-    var buckets = [],
+-        symbolBuckets = this.symbolBuckets = [],
+-        otherBuckets = [];
+-
+-    featureIndex.bucketLayerIDs = {};
+-
+-    for (var id in bucketsById) {
+-        bucket = bucketsById[id];
+-        if (bucket.features.length === 0) continue;
+-
+-        featureIndex.bucketLayerIDs[bucket.index] = bucket.childLayers.map(getLayerId);
+-
+-        buckets.push(bucket);
++    this.addPaintAttributes('circle', globalProperties, feature.properties, startGroup, startIndex);
++};
+ 
+-        if (bucket.type === 'symbol')
+-            symbolBuckets.push(bucket);
+-        else
+-            otherBuckets.push(bucket);
+-    }
++},{"../../util/util":362,"../bucket":260,"../load_geometry":267}],262:[function(require,module,exports){
++'use strict';
+ 
+-    var icons = {};
+-    var stacks = {};
+-    var deps = 0;
++var Bucket = require('../bucket');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
+ 
++module.exports = FillBucket;
+ 
+-    if (symbolBuckets.length > 0) {
++function FillBucket() {
++    Bucket.apply(this, arguments);
++}
+ 
+-        // Get dependencies for symbol buckets
+-        for (i = symbolBuckets.length - 1; i >= 0; i--) {
+-            symbolBuckets[i].updateIcons(icons);
+-            symbolBuckets[i].updateFont(stacks);
+-        }
++FillBucket.prototype = util.inherit(Bucket, {});
+ 
+-        for (var fontName in stacks) {
+-            stacks[fontName] = Object.keys(stacks[fontName]).map(Number);
+-        }
+-        icons = Object.keys(icons);
++FillBucket.prototype.programInterfaces = {
++    fill: {
++        vertexBuffer: true,
++        elementBuffer: true,
++        elementBuffer2: true,
++        elementBuffer2Components: 2,
+ 
+-        actor.send('get glyphs', {uid: this.uid, stacks: stacks}, function(err, newStacks) {
+-            stacks = newStacks;
+-            gotDependency(err);
+-        });
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }]
++    }
++};
+ 
+-        if (icons.length) {
+-            actor.send('get icons', {icons: icons}, function(err, newIcons) {
+-                icons = newIcons;
+-                gotDependency(err);
+-            });
+-        } else {
+-            gotDependency();
+-        }
++FillBucket.prototype.addFeature = function(feature) {
++    var lines = loadGeometry(feature);
++    for (var i = 0; i < lines.length; i++) {
++        this.addFill(lines[i]);
+     }
++};
+ 
+-    // immediately parse non-symbol buckets (they have no dependencies)
+-    for (i = otherBuckets.length - 1; i >= 0; i--) {
+-        parseBucket(this, otherBuckets[i]);
++FillBucket.prototype.addFill = function(vertices) {
++    if (vertices.length < 3) {
++        //console.warn('a fill must have at least three vertices');
++        return;
+     }
+ 
+-    if (symbolBuckets.length === 0)
+-        return done();
++    // Calculate the total number of vertices we're going to produce so that we
++    // can resize the buffer beforehand, or detect whether the current line
++    // won't fit into the buffer anymore.
++    // In order to be able to use the vertex buffer for drawing the antialiased
++    // outlines, we separate all polygon vertices with a degenerate (out-of-
++    // viewplane) vertex.
+ 
+-    function gotDependency(err) {
+-        if (err) return callback(err);
+-        deps++;
+-        if (deps === 2) {
+-            // all symbol bucket dependencies fetched; parse them in proper order
+-            for (var i = symbolBuckets.length - 1; i >= 0; i--) {
+-                parseBucket(tile, symbolBuckets[i]);
+-            }
+-            done();
+-        }
+-    }
++    var len = vertices.length;
+ 
+-    function parseBucket(tile, bucket) {
+-        var now = Date.now();
+-        bucket.populateBuffers(collisionTile, stacks, icons);
+-        var time = Date.now() - now;
++    // Expand this geometry buffer to hold all the required vertices.
++    var group = this.makeRoomFor('fill', len + 1);
++
++    // We're generating triangle fans, so we always start with the first coordinate in this polygon.
++    var firstIndex, prevIndex;
++    for (var i = 0; i < vertices.length; i++) {
++        var currentVertex = vertices[i];
+ 
++        var currentIndex = group.layout.vertex.emplaceBack(currentVertex.x, currentVertex.y);
++        if (i === 0) firstIndex = currentIndex;
+ 
+-        if (bucket.type !== 'symbol') {
+-            for (var i = 0; i < bucket.features.length; i++) {
+-                var feature = bucket.features[i];
+-                featureIndex.insert(feature, feature.index, bucket.sourceLayerIndex, bucket.index);
+-            }
++        // Only add triangles that have distinct vertices.
++        if (i >= 2 && (currentVertex.x !== vertices[0].x || currentVertex.y !== vertices[0].y)) {
++            group.layout.element.emplaceBack(firstIndex, prevIndex, currentIndex);
+         }
+ 
+-        bucket.features = null;
++        if (i >= 1) {
++            group.layout.element2.emplaceBack(prevIndex, currentIndex);
++        }
+ 
+-        stats._total += time;
+-        stats[bucket.id] = (stats[bucket.id] || 0) + time;
++        prevIndex = currentIndex;
+     }
++};
+ 
+-    function done() {
+-        tile.status = 'done';
++},{"../../util/util":362,"../bucket":260,"../load_geometry":267}],263:[function(require,module,exports){
++'use strict';
+ 
+-        if (tile.redoPlacementAfterDone) {
+-            tile.redoPlacement(tile.angle, tile.pitch, null);
+-            tile.redoPlacementAfterDone = false;
+-        }
++var Bucket = require('../bucket');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
++var EXTENT = Bucket.EXTENT;
+ 
+-        var featureIndex_ = featureIndex.serialize();
+-        var collisionTile_ = collisionTile.serialize();
+-        var collisionBoxArray = tile.collisionBoxArray.serialize();
+-        var transferables = [rawTileData].concat(featureIndex_.transferables).concat(collisionTile_.transferables);
++// NOTE ON EXTRUDE SCALE:
++// scale the extrusion vector so that the normal length is this value.
++// contains the "texture" normals (-1..1). this is distinct from the extrude
++// normals for line joins, because the x-value remains 0 for the texture
++// normal array, while the extrude normal actually moves the vertex to create
++// the acute/bevelled line join.
++var EXTRUDE_SCALE = 63;
+ 
+-        var nonEmptyBuckets = buckets.filter(isBucketEmpty);
++/*
++ * Sharp corners cause dashed lines to tilt because the distance along the line
++ * is the same at both the inner and outer corners. To improve the appearance of
++ * dashed lines we add extra points near sharp corners so that a smaller part
++ * of the line is tilted.
++ *
++ * COS_HALF_SHARP_CORNER controls how sharp a corner has to be for us to add an
++ * extra vertex. The default is 75 degrees.
++ *
++ * The newly created vertices are placed SHARP_CORNER_OFFSET pixels from the corner.
++ */
++var COS_HALF_SHARP_CORNER = Math.cos(75 / 2 * (Math.PI / 180));
++var SHARP_CORNER_OFFSET = 15;
+ 
+-        callback(null, {
+-            buckets: nonEmptyBuckets.map(serializeBucket),
+-            bucketStats: stats, // TODO put this in a separate message?
+-            featureIndex: featureIndex_.data,
+-            collisionTile: collisionTile_.data,
+-            collisionBoxArray: collisionBoxArray,
+-            rawTileData: rawTileData
+-        }, getTransferables(nonEmptyBuckets).concat(transferables));
+-    }
+-};
++// The number of bits that is used to store the line distance in the buffer.
++var LINE_DISTANCE_BUFFER_BITS = 14;
+ 
+-WorkerTile.prototype.redoPlacement = function(angle, pitch, showCollisionBoxes) {
+-    if (this.status !== 'done') {
+-        this.redoPlacementAfterDone = true;
+-        this.angle = angle;
+-        return {};
+-    }
++// We don't have enough bits for the line distance as we'd like to have, so
++// use this value to scale the line distance (in tile units) down to a smaller
++// value. This lets us store longer distances while sacrificing precision.
++var LINE_DISTANCE_SCALE = 1 / 2;
+ 
+-    var collisionTile = new CollisionTile(angle, pitch, this.collisionBoxArray);
++// The maximum line distance, in tile units, that fits in the buffer.
++var MAX_LINE_DISTANCE = Math.pow(2, LINE_DISTANCE_BUFFER_BITS) / LINE_DISTANCE_SCALE;
+ 
+-    var buckets = this.symbolBuckets;
+ 
+-    for (var i = buckets.length - 1; i >= 0; i--) {
+-        buckets[i].placeFeatures(collisionTile, showCollisionBoxes);
+-    }
++module.exports = LineBucket;
+ 
+-    var collisionTile_ = collisionTile.serialize();
++/**
++ * @private
++ */
++function LineBucket() {
++    Bucket.apply(this, arguments);
++}
+ 
+-    var nonEmptyBuckets = buckets.filter(isBucketEmpty);
++LineBucket.prototype = util.inherit(Bucket, {});
+ 
+-    return {
+-        result: {
+-            buckets: nonEmptyBuckets.map(serializeBucket),
+-            collisionTile: collisionTile_.data
+-        },
+-        transferables: getTransferables(nonEmptyBuckets).concat(collisionTile_.transferables)
+-    };
++LineBucket.prototype.addLineVertex = function(vertexBuffer, point, extrude, tx, ty, dir, linesofar) {
++    return vertexBuffer.emplaceBack(
++            // a_pos
++            (point.x << 1) | tx,
++            (point.y << 1) | ty,
++            // a_data
++            // add 128 to store an byte in an unsigned byte
++            Math.round(EXTRUDE_SCALE * extrude.x) + 128,
++            Math.round(EXTRUDE_SCALE * extrude.y) + 128,
++            // Encode the -1/0/1 direction value into the first two bits of .z of a_data.
++            // Combine it with the lower 6 bits of `linesofar` (shifted by 2 bites to make
++            // room for the direction value). The upper 8 bits of `linesofar` are placed in
++            // the `w` component. `linesofar` is scaled down by `LINE_DISTANCE_SCALE` so that
++            // we can store longer distances while sacrificing precision.
++            ((dir === 0 ? 0 : (dir < 0 ? -1 : 1)) + 1) | (((linesofar * LINE_DISTANCE_SCALE) & 0x3F) << 2),
++            (linesofar * LINE_DISTANCE_SCALE) >> 6);
+ };
+ 
+-function isBucketEmpty(bucket) {
+-    for (var programName in bucket.arrayGroups) {
+-        var programArrayGroups = bucket.arrayGroups[programName];
+-        for (var k = 0; k < programArrayGroups.length; k++) {
+-            var programArrayGroup = programArrayGroups[k];
+-            for (var layoutOrPaint in programArrayGroup) {
+-                var arrays = programArrayGroup[layoutOrPaint];
+-                for (var bufferName in arrays) {
+-                    if (arrays[bufferName].length > 0) return true;
+-                }
+-            }
+-        }
++LineBucket.prototype.programInterfaces = {
++    line: {
++        vertexBuffer: true,
++        elementBuffer: true,
++
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }, {
++            name: 'a_data',
++            components: 4,
++            type: 'Uint8'
++        }]
+     }
+-    return false;
+-}
++};
+ 
+-function serializeBucket(bucket) {
+-    return bucket.serialize();
+-}
++LineBucket.prototype.addFeature = function(feature) {
++    var lines = loadGeometry(feature);
++    for (var i = 0; i < lines.length; i++) {
++        this.addLine(
++            lines[i],
++            this.layer.layout['line-join'],
++            this.layer.layout['line-cap'],
++            this.layer.layout['line-miter-limit'],
++            this.layer.layout['line-round-limit']
++        );
++    }
++};
+ 
+-function getTransferables(buckets) {
+-    var transferables = [];
+-    for (var i in buckets) {
+-        var bucket = buckets[i];
+-        for (var programName in bucket.arrayGroups) {
+-            var programArrayGroups = bucket.arrayGroups[programName];
+-            for (var k = 0; k < programArrayGroups.length; k++) {
+-                var programArrayGroup = programArrayGroups[k];
+-                for (var layoutOrPaint in programArrayGroup) {
+-                    var arrays = programArrayGroup[layoutOrPaint];
+-                    for (var bufferName in arrays) {
+-                        transferables.push(arrays[bufferName].arrayBuffer);
+-                    }
+-                }
+-            }
+-        }
++LineBucket.prototype.addLine = function(vertices, join, cap, miterLimit, roundLimit) {
++
++    var len = vertices.length;
++    // If the line has duplicate vertices at the end, adjust length to remove them.
++    while (len > 2 && vertices[len - 1].equals(vertices[len - 2])) {
++        len--;
+     }
+-    return transferables;
+-}
+ 
+-function getLayerId(layer) {
+-    return layer.id;
+-}
++    if (vertices.length < 2) {
++        //console.warn('a line must have at least two vertices');
++        return;
++    }
+ 
+-},{"../data/bucket":247,"../data/feature_index":253,"../symbol/collision_box":306,"../symbol/collision_tile":308,"../util/dictionary_coder":340}],287:[function(require,module,exports){
+-'use strict';
++    if (join === 'bevel') miterLimit = 1.05;
+ 
+-module.exports = AnimationLoop;
++    var sharpCornerOffset = SHARP_CORNER_OFFSET * (EXTENT / (512 * this.overscaling));
+ 
+-function AnimationLoop() {
+-    this.n = 0;
+-    this.times = [];
+-}
++    var firstVertex = vertices[0],
++        lastVertex = vertices[len - 1],
++        closed = firstVertex.equals(lastVertex);
+ 
+-// Are all animations done?
+-AnimationLoop.prototype.stopped = function() {
+-    this.times = this.times.filter(function(t) {
+-        return t.time >= (new Date()).getTime();
+-    });
+-    return !this.times.length;
+-};
++    // we could be more precise, but it would only save a negligible amount of space
++    this.makeRoomFor('line', len * 10);
+ 
+-// Add a new animation that will run t milliseconds
+-// Returns an id that can be used to cancel it layer
+-AnimationLoop.prototype.set = function(t) {
+-    this.times.push({ id: this.n, time: t + (new Date()).getTime() });
+-    return this.n++;
+-};
++    if (len === 2 && closed) {
++        // console.warn('a line may not have coincident points');
++        return;
++    }
+ 
+-// Cancel an animation
+-AnimationLoop.prototype.cancel = function(n) {
+-    this.times = this.times.filter(function(t) {
+-        return t.id !== n;
+-    });
+-};
++    this.distance = 0;
+ 
+-},{}],288:[function(require,module,exports){
+-'use strict';
++    var beginCap = cap,
++        endCap = closed ? 'butt' : cap,
++        startOfLine = true,
++        currentVertex, prevVertex, nextVertex, prevNormal, nextNormal, offsetA, offsetB;
+ 
+-var Evented = require('../util/evented');
+-var ajax = require('../util/ajax');
+-var browser = require('../util/browser');
+-var normalizeURL = require('../util/mapbox').normalizeSpriteURL;
++    // the last three vertices added
++    this.e1 = this.e2 = this.e3 = -1;
+ 
+-module.exports = ImageSprite;
++    if (closed) {
++        currentVertex = vertices[len - 2];
++        nextNormal = firstVertex.sub(currentVertex)._unit()._perp();
++    }
+ 
+-function ImageSprite(base) {
+-    this.base = base;
+-    this.retina = browser.devicePixelRatio > 1;
++    for (var i = 0; i < len; i++) {
+ 
+-    var format = this.retina ? '@2x' : '';
++        nextVertex = closed && i === len - 1 ?
++            vertices[1] : // if the line is closed, we treat the last vertex like the first
++            vertices[i + 1]; // just the next vertex
+ 
+-    ajax.getJSON(normalizeURL(base, format, '.json'), function(err, data) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
+-        }
++        // if two consecutive vertices exist, skip the current one
++        if (nextVertex && vertices[i].equals(nextVertex)) continue;
+ 
+-        this.data = data;
+-        if (this.img) this.fire('load');
+-    }.bind(this));
++        if (nextNormal) prevNormal = nextNormal;
++        if (currentVertex) prevVertex = currentVertex;
+ 
+-    ajax.getImage(normalizeURL(base, format, '.png'), function(err, img) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
+-        }
++        currentVertex = vertices[i];
+ 
+-        // premultiply the sprite
+-        var data = img.getData();
+-        var newdata = img.data = new Uint8Array(data.length);
+-        for (var i = 0; i < data.length; i += 4) {
+-            var alpha = data[i + 3] / 255;
+-            newdata[i + 0] = data[i + 0] * alpha;
+-            newdata[i + 1] = data[i + 1] * alpha;
+-            newdata[i + 2] = data[i + 2] * alpha;
+-            newdata[i + 3] = data[i + 3];
+-        }
++        // Calculate the normal towards the next vertex in this line. In case
++        // there is no next vertex, pretend that the line is continuing straight,
++        // meaning that we are just using the previous normal.
++        nextNormal = nextVertex ? nextVertex.sub(currentVertex)._unit()._perp() : prevNormal;
+ 
+-        this.img = img;
+-        if (this.data) this.fire('load');
+-    }.bind(this));
+-}
++        // If we still don't have a previous normal, this is the beginning of a
++        // non-closed line, so we're doing a straight "join".
++        prevNormal = prevNormal || nextNormal;
+ 
+-ImageSprite.prototype = Object.create(Evented);
++        // Determine the normal of the join extrusion. It is the angle bisector
++        // of the segments between the previous line and the next line.
++        var joinNormal = prevNormal.add(nextNormal)._unit();
+ 
+-ImageSprite.prototype.toJSON = function() {
+-    return this.base;
+-};
++        /*  joinNormal     prevNormal
++         *             ↖      ↑
++         *                .________. prevVertex
++         *                |
++         * nextNormal  ←  |  currentVertex
++         *                |
++         *     nextVertex !
++         *
++         */
+ 
+-ImageSprite.prototype.loaded = function() {
+-    return !!(this.data && this.img);
+-};
++        // Calculate the length of the miter (the ratio of the miter to the width).
++        // Find the cosine of the angle between the next and join normals
++        // using dot product. The inverse of that is the miter length.
++        var cosHalfAngle = joinNormal.x * nextNormal.x + joinNormal.y * nextNormal.y;
++        var miterLength = 1 / cosHalfAngle;
+ 
+-ImageSprite.prototype.resize = function(/*gl*/) {
+-    if (browser.devicePixelRatio > 1 !== this.retina) {
+-        var newSprite = new ImageSprite(this.base);
+-        newSprite.on('load', function() {
+-            this.img = newSprite.img;
+-            this.data = newSprite.data;
+-            this.retina = newSprite.retina;
+-        }.bind(this));
+-    }
+-};
++        var isSharpCorner = cosHalfAngle < COS_HALF_SHARP_CORNER && prevVertex && nextVertex;
+ 
+-function SpritePosition() {}
+-SpritePosition.prototype = { x: 0, y: 0, width: 0, height: 0, pixelRatio: 1, sdf: false };
++        if (isSharpCorner && i > 0) {
++            var prevSegmentLength = currentVertex.dist(prevVertex);
++            if (prevSegmentLength > 2 * sharpCornerOffset) {
++                var newPrevVertex = currentVertex.sub(currentVertex.sub(prevVertex)._mult(sharpCornerOffset / prevSegmentLength)._round());
++                this.distance += newPrevVertex.dist(prevVertex);
++                this.addCurrentVertex(newPrevVertex, this.distance, prevNormal.mult(1), 0, 0, false);
++                prevVertex = newPrevVertex;
++            }
++        }
+ 
+-ImageSprite.prototype.getSpritePosition = function(name) {
+-    if (!this.loaded()) return new SpritePosition();
++        // The join if a middle vertex, otherwise the cap.
++        var middleVertex = prevVertex && nextVertex;
++        var currentJoin = middleVertex ? join : nextVertex ? beginCap : endCap;
+ 
+-    var pos = this.data && this.data[name];
+-    if (pos && this.img) return pos;
++        if (middleVertex && currentJoin === 'round') {
++            if (miterLength < roundLimit) {
++                currentJoin = 'miter';
++            } else if (miterLength <= 2) {
++                currentJoin = 'fakeround';
++            }
++        }
+ 
+-    return new SpritePosition();
+-};
++        if (currentJoin === 'miter' && miterLength > miterLimit) {
++            currentJoin = 'bevel';
++        }
+ 
+-},{"../util/ajax":334,"../util/browser":335,"../util/evented":341,"../util/mapbox":346}],289:[function(require,module,exports){
+-'use strict';
++        if (currentJoin === 'bevel') {
++            // The maximum extrude length is 128 / 63 = 2 times the width of the line
++            // so if miterLength >= 2 we need to draw a different type of bevel where.
++            if (miterLength > 2) currentJoin = 'flipbevel';
+ 
+-var parseCSSColor = require('csscolorparser').parseCSSColor;
+-var util = require('../util/util');
++            // If the miterLength is really small and the line bevel wouldn't be visible,
++            // just draw a miter join to save a triangle.
++            if (miterLength < miterLimit) currentJoin = 'miter';
++        }
+ 
+-var colorCache = {};
++        // Calculate how far along the line the currentVertex is
++        if (prevVertex) this.distance += currentVertex.dist(prevVertex);
+ 
+-function parseColor(input) {
++        if (currentJoin === 'miter') {
+ 
+-    if (colorCache[input]) {
+-        return colorCache[input];
++            joinNormal._mult(miterLength);
++            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
+ 
+-    // RGBA array
+-    } else if (Array.isArray(input)) {
+-        return input;
++        } else if (currentJoin === 'flipbevel') {
++            // miter is too big, flip the direction to make a beveled join
+ 
+-    // GL function
+-    } else if (input && input.stops) {
+-        return util.extend({}, input, {
+-            stops: input.stops.map(parseFunctionStopColor)
+-        });
++            if (miterLength > 100) {
++                // Almost parallel lines
++                joinNormal = nextNormal.clone();
+ 
+-    // Color string
+-    } else if (typeof input === 'string') {
+-        var parsedColor = parseCSSColor(input);
+-        if (!parsedColor) { throw new Error('Invalid color ' + input); }
++            } else {
++                var direction = prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x > 0 ? -1 : 1;
++                var bevelLength = miterLength * prevNormal.add(nextNormal).mag() / prevNormal.sub(nextNormal).mag();
++                joinNormal._perp()._mult(bevelLength * direction);
++            }
++            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
++            this.addCurrentVertex(currentVertex, this.distance, joinNormal.mult(-1), 0, 0, false);
+ 
+-        var output = colorDowngrade(parsedColor);
+-        colorCache[input] = output;
+-        return output;
++        } else if (currentJoin === 'bevel' || currentJoin === 'fakeround') {
++            var lineTurnsLeft = (prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x) > 0;
++            var offset = -Math.sqrt(miterLength * miterLength - 1);
++            if (lineTurnsLeft) {
++                offsetB = 0;
++                offsetA = offset;
++            } else {
++                offsetA = 0;
++                offsetB = offset;
++            }
+ 
+-    } else {
+-        throw new Error('Invalid color ' + input);
+-    }
++            // Close previous segment with a bevel
++            if (!startOfLine) {
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, offsetA, offsetB, false);
++            }
+ 
+-}
++            if (currentJoin === 'fakeround') {
++                // The join angle is sharp enough that a round join would be visible.
++                // Bevel joins fill the gap between segments with a single pie slice triangle.
++                // Create a round join by adding multiple pie slices. The join isn't actually round, but
++                // it looks like it is at the sizes we render lines at.
+ 
+-function parseFunctionStopColor(stop) {
+-    return [stop[0], parseColor(stop[1])];
+-}
++                // Add more triangles for sharper angles.
++                // This math is just a good enough approximation. It isn't "correct".
++                var n = Math.floor((0.5 - (cosHalfAngle - 0.5)) * 8);
++                var approxFractionalJoinNormal;
+ 
+-function colorDowngrade(color) {
+-    return [color[0] / 255, color[1] / 255, color[2] / 255, color[3] / 1];
+-}
++                for (var m = 0; m < n; m++) {
++                    approxFractionalJoinNormal = nextNormal.mult((m + 1) / (n + 1))._add(prevNormal)._unit();
++                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
++                }
+ 
+-module.exports = parseColor;
++                this.addPieSliceVertex(currentVertex, this.distance, joinNormal, lineTurnsLeft);
+ 
+-},{"../util/util":349,"csscolorparser":351}],290:[function(require,module,exports){
+-'use strict';
++                for (var k = n - 1; k >= 0; k--) {
++                    approxFractionalJoinNormal = prevNormal.mult((k + 1) / (n + 1))._add(nextNormal)._unit();
++                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
++                }
++            }
+ 
+-var Evented = require('../util/evented');
+-var StyleLayer = require('./style_layer');
+-var ImageSprite = require('./image_sprite');
+-var GlyphSource = require('../symbol/glyph_source');
+-var SpriteAtlas = require('../symbol/sprite_atlas');
+-var LineAtlas = require('../render/line_atlas');
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var normalizeURL = require('../util/mapbox').normalizeStyleURL;
+-var browser = require('../util/browser');
+-var Dispatcher = require('../util/dispatcher');
+-var AnimationLoop = require('./animation_loop');
+-var validateStyle = require('./validate_style');
+-var Source = require('../source/source');
+-var styleSpec = require('./style_spec');
+-var StyleFunction = require('./style_function');
++            // Start next segment
++            if (nextVertex) {
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -offsetA, -offsetB, false);
++            }
++
++        } else if (currentJoin === 'butt') {
++            if (!startOfLine) {
++                // Close previous segment with a butt
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
++            }
+ 
+-module.exports = Style;
++            // Start next segment with a butt
++            if (nextVertex) {
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
++            }
+ 
+-function Style(stylesheet, animationLoop) {
+-    this.animationLoop = animationLoop || new AnimationLoop();
+-    this.dispatcher = new Dispatcher(Math.max(browser.hardwareConcurrency - 1, 1), this);
+-    this.spriteAtlas = new SpriteAtlas(512, 512);
+-    this.lineAtlas = new LineAtlas(256, 512);
++        } else if (currentJoin === 'square') {
+ 
+-    this._layers = {};
+-    this._order  = [];
+-    this._groups = [];
+-    this.sources = {};
+-    this.zoomHistory = {};
++            if (!startOfLine) {
++                // Close previous segment with a square cap
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, false);
+ 
+-    util.bindAll([
+-        '_forwardSourceEvent',
+-        '_forwardTileEvent',
+-        '_forwardLayerEvent',
+-        '_redoPlacement'
+-    ], this);
++                // The segment is done. Unset vertices to disconnect segments.
++                this.e1 = this.e2 = -1;
++            }
+ 
+-    this._resetUpdates();
++            // Start next segment
++            if (nextVertex) {
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, false);
++            }
+ 
+-    var loaded = function(err, stylesheet) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
+-        }
++        } else if (currentJoin === 'round') {
+ 
+-        if (validateStyle.emitErrors(this, validateStyle(stylesheet))) return;
++            if (!startOfLine) {
++                // Close previous segment with butt
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
+ 
+-        this._loaded = true;
+-        this.stylesheet = stylesheet;
++                // Add round cap or linejoin at end of segment
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, true);
+ 
+-        this.updateClasses();
++                // The segment is done. Unset vertices to disconnect segments.
++                this.e1 = this.e2 = -1;
++            }
+ 
+-        var sources = stylesheet.sources;
+-        for (var id in sources) {
+-            this.addSource(id, sources[id]);
++
++            // Start next segment with a butt
++            if (nextVertex) {
++                // Add round cap before first segment
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, true);
++
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
++            }
+         }
+ 
+-        if (stylesheet.sprite) {
+-            this.sprite = new ImageSprite(stylesheet.sprite);
+-            this.sprite.on('load', this.fire.bind(this, 'change'));
++        if (isSharpCorner && i < len - 1) {
++            var nextSegmentLength = currentVertex.dist(nextVertex);
++            if (nextSegmentLength > 2 * sharpCornerOffset) {
++                var newCurrentVertex = currentVertex.add(nextVertex.sub(currentVertex)._mult(sharpCornerOffset / nextSegmentLength)._round());
++                this.distance += newCurrentVertex.dist(currentVertex);
++                this.addCurrentVertex(newCurrentVertex, this.distance, nextNormal.mult(1), 0, 0, false);
++                currentVertex = newCurrentVertex;
++            }
+         }
+ 
+-        this.glyphSource = new GlyphSource(stylesheet.glyphs);
+-        this._resolve();
+-        this.fire('load');
+-    }.bind(this);
++        startOfLine = false;
++    }
+ 
+-    if (typeof stylesheet === 'string') {
+-        ajax.getJSON(normalizeURL(stylesheet), loaded);
+-    } else {
+-        browser.frame(loaded.bind(this, null, stylesheet));
++};
++
++/**
++ * Add two vertices to the buffers.
++ *
++ * @param {Object} currentVertex the line vertex to add buffer vertices for
++ * @param {number} distance the distance from the beginning of the line to the vertex
++ * @param {number} endLeft extrude to shift the left vertex along the line
++ * @param {number} endRight extrude to shift the left vertex along the line
++ * @param {boolean} round whether this is a round cap
++ * @private
++ */
++LineBucket.prototype.addCurrentVertex = function(currentVertex, distance, normal, endLeft, endRight, round) {
++    var tx = round ? 1 : 0;
++    var extrude;
++    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
++    var vertexArray = layoutArrays.vertex;
++    var elementArray = layoutArrays.element;
++
++    extrude = normal.clone();
++    if (endLeft) extrude._sub(normal.perp()._mult(endLeft));
++    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 0, endLeft, distance);
++    if (this.e1 >= 0 && this.e2 >= 0) {
++        elementArray.emplaceBack(this.e1, this.e2, this.e3);
+     }
++    this.e1 = this.e2;
++    this.e2 = this.e3;
+ 
+-    this.on('source.load', function(event) {
+-        var source = event.source;
+-        if (source && source.vectorLayerIds) {
+-            for (var layerId in this._layers) {
+-                var layer = this._layers[layerId];
+-                if (layer.source === source.id) {
+-                    this._validateLayer(layer);
+-                }
+-            }
+-        }
+-    });
+-}
++    extrude = normal.mult(-1);
++    if (endRight) extrude._sub(normal.perp()._mult(endRight));
++    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 1, -endRight, distance);
++    if (this.e1 >= 0 && this.e2 >= 0) {
++        elementArray.emplaceBack(this.e1, this.e2, this.e3);
++    }
++    this.e1 = this.e2;
++    this.e2 = this.e3;
+ 
+-Style.prototype = util.inherit(Evented, {
+-    _loaded: false,
++    // There is a maximum "distance along the line" that we can store in the buffers.
++    // When we get close to the distance, reset it to zero and add the vertex again with
++    // a distance of zero. The max distance is determined by the number of bits we allocate
++    // to `linesofar`.
++    if (distance > MAX_LINE_DISTANCE / 2) {
++        this.distance = 0;
++        this.addCurrentVertex(currentVertex, this.distance, normal, endLeft, endRight, round);
++    }
++};
+ 
+-    _validateLayer: function(layer) {
+-        var source = this.sources[layer.source];
++/**
++ * Add a single new vertex and a triangle using two previous vertices.
++ * This adds a pie slice triangle near a join to simulate round joins
++ *
++ * @param {Object} currentVertex the line vertex to add buffer vertices for
++ * @param {number} distance the distance from the beggining of the line to the vertex
++ * @param {Object} extrude the offset of the new vertex from the currentVertex
++ * @param {boolean} whether the line is turning left or right at this angle
++ * @private
++ */
++LineBucket.prototype.addPieSliceVertex = function(currentVertex, distance, extrude, lineTurnsLeft) {
++    var ty = lineTurnsLeft ? 1 : 0;
++    extrude = extrude.mult(lineTurnsLeft ? -1 : 1);
++    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
++    var vertexArray = layoutArrays.vertex;
++    var elementArray = layoutArrays.element;
+ 
+-        if (!layer.sourceLayer) return;
+-        if (!source) return;
+-        if (!source.vectorLayerIds) return;
++    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, 0, ty, 0, distance);
+ 
+-        if (source.vectorLayerIds.indexOf(layer.sourceLayer) === -1) {
+-            this.fire('error', {
+-                error: new Error(
+-                    'Source layer "' + layer.sourceLayer + '" ' +
+-                    'does not exist on source "' + source.id + '" ' +
+-                    'as specified by style layer "' + layer.id + '"'
+-                )
+-            });
+-        }
+-    },
++    if (this.e1 >= 0 && this.e2 >= 0) {
++        elementArray.emplaceBack(this.e1, this.e2, this.e3);
++    }
+ 
+-    loaded: function() {
+-        if (!this._loaded)
+-            return false;
++    if (lineTurnsLeft) {
++        this.e2 = this.e3;
++    } else {
++        this.e1 = this.e3;
++    }
++};
+ 
+-        for (var id in this.sources)
+-            if (!this.sources[id].loaded())
+-                return false;
++},{"../../util/util":362,"../bucket":260,"../load_geometry":267}],264:[function(require,module,exports){
++'use strict';
+ 
+-        if (this.sprite && !this.sprite.loaded())
+-            return false;
++var Point = require('point-geometry');
+ 
+-        return true;
+-    },
++var Bucket = require('../bucket');
++var Anchor = require('../../symbol/anchor');
++var getAnchors = require('../../symbol/get_anchors');
++var resolveTokens = require('../../util/token');
++var Quads = require('../../symbol/quads');
++var Shaping = require('../../symbol/shaping');
++var resolveText = require('../../symbol/resolve_text');
++var mergeLines = require('../../symbol/mergelines');
++var clipLine = require('../../symbol/clip_line');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
++var CollisionFeature = require('../../symbol/collision_feature');
+ 
+-    _resolve: function() {
+-        var layer, layerJSON;
++var shapeText = Shaping.shapeText;
++var shapeIcon = Shaping.shapeIcon;
++var getGlyphQuads = Quads.getGlyphQuads;
++var getIconQuads = Quads.getIconQuads;
+ 
+-        this._layers = {};
+-        this._order  = this.stylesheet.layers.map(function(layer) {
+-            return layer.id;
+-        });
++var EXTENT = Bucket.EXTENT;
+ 
+-        // resolve all layers WITHOUT a ref
+-        for (var i = 0; i < this.stylesheet.layers.length; i++) {
+-            layerJSON = this.stylesheet.layers[i];
+-            if (layerJSON.ref) continue;
+-            layer = StyleLayer.create(layerJSON);
+-            this._layers[layer.id] = layer;
+-            layer.on('error', this._forwardLayerEvent);
+-        }
++module.exports = SymbolBucket;
+ 
+-        // resolve all layers WITH a ref
+-        for (var j = 0; j < this.stylesheet.layers.length; j++) {
+-            layerJSON = this.stylesheet.layers[j];
+-            if (!layerJSON.ref) continue;
+-            var refLayer = this.getLayer(layerJSON.ref);
+-            layer = StyleLayer.create(layerJSON, refLayer);
+-            this._layers[layer.id] = layer;
+-            layer.on('error', this._forwardLayerEvent);
+-        }
++function SymbolBucket(options) {
++    Bucket.apply(this, arguments);
++    this.showCollisionBoxes = options.showCollisionBoxes;
++    this.overscaling = options.overscaling;
++    this.collisionBoxArray = options.collisionBoxArray;
+ 
+-        this._groupLayers();
+-        this._updateWorkerLayers();
+-    },
++    this.sdfIcons = options.sdfIcons;
++    this.iconsNeedLinear = options.iconsNeedLinear;
++    this.adjustedTextSize = options.adjustedTextSize;
++    this.adjustedIconSize = options.adjustedIconSize;
++    this.fontstack = options.fontstack;
++}
+ 
+-    _groupLayers: function() {
+-        var group;
++SymbolBucket.prototype = util.inherit(Bucket, {});
+ 
+-        this._groups = [];
++SymbolBucket.prototype.serialize = function() {
++    var serialized = Bucket.prototype.serialize.apply(this);
++    serialized.sdfIcons = this.sdfIcons;
++    serialized.iconsNeedLinear = this.iconsNeedLinear;
++    serialized.adjustedTextSize = this.adjustedTextSize;
++    serialized.adjustedIconSize = this.adjustedIconSize;
++    serialized.fontstack = this.fontstack;
++    return serialized;
++};
+ 
+-        // Split into groups of consecutive top-level layers with the same source.
+-        for (var i = 0; i < this._order.length; ++i) {
+-            var layer = this._layers[this._order[i]];
++var programAttributes = [{
++    name: 'a_pos',
++    components: 2,
++    type: 'Int16'
++}, {
++    name: 'a_offset',
++    components: 2,
++    type: 'Int16'
++}, {
++    name: 'a_data1',
++    components: 4,
++    type: 'Uint8'
++}, {
++    name: 'a_data2',
++    components: 2,
++    type: 'Uint8'
++}];
+ 
+-            if (!group || layer.source !== group.source) {
+-                group = [];
+-                group.source = layer.source;
+-                this._groups.push(group);
+-            }
++function addVertex(array, x, y, ox, oy, tx, ty, minzoom, maxzoom, labelminzoom) {
++    return array.emplaceBack(
++            // pos
++            x,
++            y,
++            // offset
++            Math.round(ox * 64), // use 1/64 pixels for placement
++            Math.round(oy * 64),
++            // data1
++            tx / 4,                   // tex
++            ty / 4,                   // tex
++            (labelminzoom || 0) * 10, // labelminzoom
++            0,
++            // data2
++            (minzoom || 0) * 10,               // minzoom
++            Math.min(maxzoom || 25, 25) * 10); // minzoom
++}
+ 
+-            group.push(layer);
+-        }
+-    },
++SymbolBucket.prototype.addCollisionBoxVertex = function(vertexArray, point, extrude, maxZoom, placementZoom) {
++    return vertexArray.emplaceBack(
++            // pos
++            point.x,
++            point.y,
++            // extrude
++            Math.round(extrude.x),
++            Math.round(extrude.y),
++            // data
++            maxZoom * 10,
++            placementZoom * 10);
++};
+ 
+-    _updateWorkerLayers: function(ids) {
+-        this.dispatcher.broadcast(ids ? 'update layers' : 'set layers', this._serializeLayers(ids));
+-    },
++SymbolBucket.prototype.programInterfaces = {
+ 
+-    _serializeLayers: function(ids) {
+-        ids = ids || this._order;
+-        var serialized = [];
+-        var options = {includeRefProperties: true};
+-        for (var i = 0; i < ids.length; i++) {
+-            serialized.push(this._layers[ids[i]].serialize(options));
+-        }
+-        return serialized;
++    glyph: {
++        vertexBuffer: true,
++        elementBuffer: true,
++        layoutAttributes: programAttributes
+     },
+ 
+-    _applyClasses: function(classes, options) {
+-        if (!this._loaded) return;
++    icon: {
++        vertexBuffer: true,
++        elementBuffer: true,
++        layoutAttributes: programAttributes
++    },
+ 
+-        classes = classes || [];
+-        options = options || {transition: true};
+-        var transition = this.stylesheet.transition || {};
++    collisionBox: {
++        vertexBuffer: true,
+ 
+-        var layers = this._updates.allPaintProps ? this._layers : this._updates.paintProps;
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }, {
++            name: 'a_extrude',
++            components: 2,
++            type: 'Int16'
++        }, {
++            name: 'a_data',
++            components: 2,
++            type: 'Uint8'
++        }]
++    }
++};
+ 
+-        for (var id in layers) {
+-            var layer = this._layers[id];
+-            var props = this._updates.paintProps[id];
++SymbolBucket.prototype.populateBuffers = function(collisionTile, stacks, icons) {
+ 
+-            if (this._updates.allPaintProps || props.all) {
+-                layer.updatePaintTransitions(classes, options, transition, this.animationLoop);
+-            } else {
+-                for (var paintName in props) {
+-                    this._layers[id].updatePaintTransition(paintName, classes, options, transition, this.animationLoop);
+-                }
+-            }
+-        }
+-    },
++    // To reduce the number of labels that jump around when zooming we need
++    // to use a text-size value that is the same for all zoom levels.
++    // This calculates text-size at a high zoom level so that all tiles can
++    // use the same value when calculating anchor positions.
++    var zoomHistory = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
++    this.adjustedTextMaxSize = this.layer.getLayoutValue('text-size', {zoom: 18, zoomHistory: zoomHistory});
++    this.adjustedTextSize = this.layer.getLayoutValue('text-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
++    this.adjustedIconMaxSize = this.layer.getLayoutValue('icon-size', {zoom: 18, zoomHistory: zoomHistory});
++    this.adjustedIconSize = this.layer.getLayoutValue('icon-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
+ 
+-    _recalculate: function(z) {
+-        for (var sourceId in this.sources)
+-            this.sources[sourceId].used = false;
++    var tileSize = 512 * this.overscaling;
++    this.tilePixelRatio = EXTENT / tileSize;
++    this.compareText = {};
++    this.symbolInstances = [];
++    this.iconsNeedLinear = false;
+ 
+-        this._updateZoomHistory(z);
++    var layout = this.layer.layout;
++    var features = this.features;
++    var textFeatures = this.textFeatures;
+ 
+-        this.rasterFadeDuration = 300;
+-        for (var layerId in this._layers) {
+-            var layer = this._layers[layerId];
++    var horizontalAlign = 0.5,
++        verticalAlign = 0.5;
+ 
+-            layer.recalculate(z, this.zoomHistory);
+-            if (!layer.isHidden(z) && layer.source) {
+-                this.sources[layer.source].used = true;
+-            }
+-        }
++    switch (layout['text-anchor']) {
++    case 'right':
++    case 'top-right':
++    case 'bottom-right':
++        horizontalAlign = 1;
++        break;
++    case 'left':
++    case 'top-left':
++    case 'bottom-left':
++        horizontalAlign = 0;
++        break;
++    }
+ 
+-        var maxZoomTransitionDuration = 300;
+-        if (Math.floor(this.z) !== Math.floor(z)) {
+-            this.animationLoop.set(maxZoomTransitionDuration);
+-        }
++    switch (layout['text-anchor']) {
++    case 'bottom':
++    case 'bottom-right':
++    case 'bottom-left':
++        verticalAlign = 1;
++        break;
++    case 'top':
++    case 'top-right':
++    case 'top-left':
++        verticalAlign = 0;
++        break;
++    }
+ 
+-        this.z = z;
+-        this.fire('zoom');
+-    },
++    var justify = layout['text-justify'] === 'right' ? 1 :
++        layout['text-justify'] === 'left' ? 0 :
++        0.5;
+ 
+-    _updateZoomHistory: function(z) {
++    var oneEm = 24;
++    var lineHeight = layout['text-line-height'] * oneEm;
++    var maxWidth = layout['symbol-placement'] !== 'line' ? layout['text-max-width'] * oneEm : 0;
++    var spacing = layout['text-letter-spacing'] * oneEm;
++    var textOffset = [layout['text-offset'][0] * oneEm, layout['text-offset'][1] * oneEm];
++    var fontstack = this.fontstack = layout['text-font'].join(',');
+ 
+-        var zh = this.zoomHistory;
++    var geometries = [];
++    for (var g = 0; g < features.length; g++) {
++        geometries.push(loadGeometry(features[g]));
++    }
+ 
+-        if (zh.lastIntegerZoom === undefined) {
+-            // first time
+-            zh.lastIntegerZoom = Math.floor(z);
+-            zh.lastIntegerZoomTime = 0;
+-            zh.lastZoom = z;
+-        }
++    if (layout['symbol-placement'] === 'line') {
++        // Merge adjacent lines with the same text to improve labelling.
++        // It's better to place labels on one long line than on many short segments.
++        var merged = mergeLines(features, textFeatures, geometries);
+ 
+-        // check whether an integer zoom level as passed since the last frame
+-        // and if yes, record it with the time. Used for transitioning patterns.
+-        if (Math.floor(zh.lastZoom) < Math.floor(z)) {
+-            zh.lastIntegerZoom = Math.floor(z);
+-            zh.lastIntegerZoomTime = Date.now();
++        geometries = merged.geometries;
++        features = merged.features;
++        textFeatures = merged.textFeatures;
++    }
+ 
+-        } else if (Math.floor(zh.lastZoom) > Math.floor(z)) {
+-            zh.lastIntegerZoom = Math.floor(z + 1);
+-            zh.lastIntegerZoomTime = Date.now();
+-        }
++    var shapedText, shapedIcon;
+ 
+-        zh.lastZoom = z;
+-    },
++    for (var k = 0; k < features.length; k++) {
++        if (!geometries[k]) continue;
+ 
+-    _checkLoaded: function () {
+-        if (!this._loaded) {
+-            throw new Error('Style is not done loading');
++        if (textFeatures[k]) {
++            shapedText = shapeText(textFeatures[k], stacks[fontstack], maxWidth,
++                    lineHeight, horizontalAlign, verticalAlign, justify, spacing, textOffset);
++        } else {
++            shapedText = null;
+         }
+-    },
+ 
+-    /**
+-     * Apply queued style updates in a batch
+-     * @private
+-     */
+-    update: function(classes, options) {
+-        if (!this._updates.changed) return this;
++        if (layout['icon-image']) {
++            var iconName = resolveTokens(features[k].properties, layout['icon-image']);
++            var image = icons[iconName];
++            shapedIcon = shapeIcon(image, layout);
+ 
+-        if (this._updates.allLayers) {
+-            this._groupLayers();
+-            this._updateWorkerLayers();
+-        } else {
+-            var updatedIds = Object.keys(this._updates.layers);
+-            if (updatedIds.length) {
+-                this._updateWorkerLayers(updatedIds);
++            if (image) {
++                if (this.sdfIcons === undefined) {
++                    this.sdfIcons = image.sdf;
++                } else if (this.sdfIcons !== image.sdf) {
++                    console.warn('Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer');
++                }
++                if (image.pixelRatio !== 1) {
++                    this.iconsNeedLinear = true;
++                }
+             }
++        } else {
++            shapedIcon = null;
+         }
+ 
+-        var updatedSourceIds = Object.keys(this._updates.sources);
+-        var i;
+-        for (i = 0; i < updatedSourceIds.length; i++) {
+-            this._reloadSource(updatedSourceIds[i]);
++        if (shapedText || shapedIcon) {
++            this.addFeature(geometries[k], shapedText, shapedIcon, features[k].index);
+         }
++    }
+ 
+-        for (i = 0; i < this._updates.events.length; i++) {
+-            var args = this._updates.events[i];
+-            this.fire(args[0], args[1]);
+-        }
++    this.placeFeatures(collisionTile, this.showCollisionBoxes);
+ 
+-        this._applyClasses(classes, options);
++    this.trimArrays();
++};
+ 
+-        if (this._updates.changed) {
+-            this.fire('change');
+-        }
++SymbolBucket.prototype.addFeature = function(lines, shapedText, shapedIcon, featureIndex) {
++    var layout = this.layer.layout;
+ 
+-        this._resetUpdates();
++    var glyphSize = 24;
+ 
+-        return this;
+-    },
++    var fontScale = this.adjustedTextSize / glyphSize,
++        textMaxSize = this.adjustedTextMaxSize !== undefined ? this.adjustedTextMaxSize : this.adjustedTextSize,
++        textBoxScale = this.tilePixelRatio * fontScale,
++        textMaxBoxScale = this.tilePixelRatio * textMaxSize / glyphSize,
++        iconBoxScale = this.tilePixelRatio * this.adjustedIconSize,
++        symbolMinDistance = this.tilePixelRatio * layout['symbol-spacing'],
++        avoidEdges = layout['symbol-avoid-edges'],
++        textPadding = layout['text-padding'] * this.tilePixelRatio,
++        iconPadding = layout['icon-padding'] * this.tilePixelRatio,
++        textMaxAngle = layout['text-max-angle'] / 180 * Math.PI,
++        textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
++        iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
++        mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
++            layout['text-ignore-placement'] || layout['icon-ignore-placement'],
++        isLine = layout['symbol-placement'] === 'line',
++        textRepeatDistance = symbolMinDistance / 2;
+ 
+-    _resetUpdates: function() {
+-        this._updates = {
+-            events: [],
+-            layers: {},
+-            sources: {},
+-            paintProps: {}
+-        };
+-    },
++    if (isLine) {
++        lines = clipLine(lines, 0, 0, EXTENT, EXTENT);
++    }
+ 
+-    addSource: function(id, source) {
+-        this._checkLoaded();
+-        if (this.sources[id] !== undefined) {
+-            throw new Error('There is already a source with this ID');
++    for (var i = 0; i < lines.length; i++) {
++        var line = lines[i];
++
++        // Calculate the anchor points around which you want to place labels
++        var anchors;
++        if (isLine) {
++            anchors = getAnchors(
++                line,
++                symbolMinDistance,
++                textMaxAngle,
++                shapedText,
++                shapedIcon,
++                glyphSize,
++                textMaxBoxScale,
++                this.overscaling,
++                EXTENT
++            );
++        } else {
++            anchors = [ new Anchor(line[0].x, line[0].y, 0) ];
+         }
+-        if (!Source.is(source) && this._handleErrors(validateStyle.source, 'sources.' + id, source)) return this;
+ 
+-        source = Source.create(source);
+-        this.sources[id] = source;
+-        source.id = id;
+-        source.style = this;
+-        source.dispatcher = this.dispatcher;
+-        source
+-            .on('load', this._forwardSourceEvent)
+-            .on('error', this._forwardSourceEvent)
+-            .on('change', this._forwardSourceEvent)
+-            .on('tile.add', this._forwardTileEvent)
+-            .on('tile.load', this._forwardTileEvent)
+-            .on('tile.error', this._forwardTileEvent)
+-            .on('tile.remove', this._forwardTileEvent)
+-            .on('tile.stats', this._forwardTileEvent);
++        // For each potential label, create the placement features used to check for collisions, and the quads use for rendering.
++        for (var j = 0, len = anchors.length; j < len; j++) {
++            var anchor = anchors[j];
+ 
+-        this._updates.events.push(['source.add', {source: source}]);
+-        this._updates.changed = true;
++            if (shapedText && isLine) {
++                if (this.anchorIsTooClose(shapedText.text, textRepeatDistance, anchor)) {
++                    continue;
++                }
++            }
+ 
+-        return this;
+-    },
++            var inside = !(anchor.x < 0 || anchor.x > EXTENT || anchor.y < 0 || anchor.y > EXTENT);
+ 
+-    /**
+-     * Remove a source from this stylesheet, given its id.
+-     * @param {string} id id of the source to remove
+-     * @returns {Style} this style
+-     * @throws {Error} if no source is found with the given ID
+-     * @private
+-     */
+-    removeSource: function(id) {
+-        this._checkLoaded();
++            if (avoidEdges && !inside) continue;
+ 
+-        if (this.sources[id] === undefined) {
+-            throw new Error('There is no source with this ID');
++            // Normally symbol layers are drawn across tile boundaries. Only symbols
++            // with their anchors within the tile boundaries are added to the buffers
++            // to prevent symbols from being drawn twice.
++            //
++            // Symbols in layers with overlap are sorted in the y direction so that
++            // symbols lower on the canvas are drawn on top of symbols near the top.
++            // To preserve this order across tile boundaries these symbols can't
++            // be drawn across tile boundaries. Instead they need to be included in
++            // the buffers for both tiles and clipped to tile boundaries at draw time.
++            var addToBuffers = inside || mayOverlap;
++
++            this.symbolInstances.push(new SymbolInstance(anchor, line, shapedText, shapedIcon, layout,
++                        addToBuffers, this.symbolInstances.length, this.collisionBoxArray, featureIndex, this.sourceLayerIndex, this.index,
++                        textBoxScale, textPadding, textAlongLine,
++                        iconBoxScale, iconPadding, iconAlongLine));
+         }
+-        var source = this.sources[id];
+-        delete this.sources[id];
+-        source
+-            .off('load', this._forwardSourceEvent)
+-            .off('error', this._forwardSourceEvent)
+-            .off('change', this._forwardSourceEvent)
+-            .off('tile.add', this._forwardTileEvent)
+-            .off('tile.load', this._forwardTileEvent)
+-            .off('tile.error', this._forwardTileEvent)
+-            .off('tile.remove', this._forwardTileEvent)
+-            .off('tile.stats', this._forwardTileEvent);
++    }
++};
+ 
+-        this._updates.events.push(['source.remove', {source: source}]);
+-        this._updates.changed = true;
++SymbolBucket.prototype.anchorIsTooClose = function(text, repeatDistance, anchor) {
++    var compareText = this.compareText;
++    if (!(text in compareText)) {
++        compareText[text] = [];
++    } else {
++        var otherAnchors = compareText[text];
++        for (var k = otherAnchors.length - 1; k >= 0; k--) {
++            if (anchor.dist(otherAnchors[k]) < repeatDistance) {
++                // If it's within repeatDistance of one anchor, stop looking
++                return true;
++            }
++        }
++    }
++    // If anchor is not within repeatDistance of any other anchor, add to array
++    compareText[text].push(anchor);
++    return false;
++};
+ 
+-        return this;
+-    },
++SymbolBucket.prototype.placeFeatures = function(collisionTile, showCollisionBoxes) {
++    this.recalculateStyleLayers();
+ 
+-    /**
+-     * Get a source by id.
+-     * @param {string} id id of the desired source
+-     * @returns {Object} source
+-     * @private
+-     */
+-    getSource: function(id) {
+-        return this.sources[id];
+-    },
++    // Calculate which labels can be shown and when they can be shown and
++    // create the bufers used for rendering.
+ 
+-    /**
+-     * Add a layer to the map style. The layer will be inserted before the layer with
+-     * ID `before`, or appended if `before` is omitted.
+-     * @param {StyleLayer|Object} layer
+-     * @param {string=} before  ID of an existing layer to insert before
+-     * @fires layer.add
+-     * @returns {Style} `this`
+-     * @private
+-     */
+-    addLayer: function(layer, before) {
+-        this._checkLoaded();
++    this.createArrays();
+ 
+-        if (!(layer instanceof StyleLayer)) {
+-            // this layer is not in the style.layers array, so we pass an impossible array index
+-            if (this._handleErrors(validateStyle.layer,
+-                    'layers.' + layer.id, layer, false, {arrayIndex: -1})) return this;
++    var layout = this.layer.layout;
+ 
+-            var refLayer = layer.ref && this.getLayer(layer.ref);
+-            layer = StyleLayer.create(layer, refLayer);
+-        }
+-        this._validateLayer(layer);
++    var maxScale = collisionTile.maxScale;
+ 
+-        layer.on('error', this._forwardLayerEvent);
++    var textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
++    var iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
+ 
+-        this._layers[layer.id] = layer;
+-        this._order.splice(before ? this._order.indexOf(before) : Infinity, 0, layer.id);
++    var mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
++        layout['text-ignore-placement'] || layout['icon-ignore-placement'];
+ 
+-        this._updates.allLayers = true;
+-        if (layer.source) {
+-            this._updates.sources[layer.source] = true;
+-        }
+-        this._updates.events.push(['layer.add', {layer: layer}]);
++    // Sort symbols by their y position on the canvas so that they lower symbols
++    // are drawn on top of higher symbols.
++    // Don't sort symbols that won't overlap because it isn't necessary and
++    // because it causes more labels to pop in and out when rotating.
++    if (mayOverlap) {
++        var angle = collisionTile.angle;
++        var sin = Math.sin(angle),
++            cos = Math.cos(angle);
+ 
+-        return this.updateClasses(layer.id);
+-    },
++        this.symbolInstances.sort(function(a, b) {
++            var aRotated = (sin * a.x + cos * a.y) | 0;
++            var bRotated = (sin * b.x + cos * b.y) | 0;
++            return (aRotated - bRotated) || (b.index - a.index);
++        });
++    }
+ 
+-    /**
+-     * Remove a layer from this stylesheet, given its id.
+-     * @param {string} id id of the layer to remove
+-     * @returns {Style} this style
+-     * @throws {Error} if no layer is found with the given ID
+-     * @private
+-     */
+-    removeLayer: function(id) {
+-        this._checkLoaded();
++    for (var p = 0; p < this.symbolInstances.length; p++) {
++        var symbolInstance = this.symbolInstances[p];
++        var hasText = symbolInstance.hasText;
++        var hasIcon = symbolInstance.hasIcon;
+ 
+-        var layer = this._layers[id];
+-        if (layer === undefined) {
+-            throw new Error('There is no layer with this ID');
+-        }
+-        for (var i in this._layers) {
+-            if (this._layers[i].ref === id) {
+-                this.removeLayer(i);
+-            }
+-        }
++        var iconWithoutText = layout['text-optional'] || !hasText,
++            textWithoutIcon = layout['icon-optional'] || !hasIcon;
+ 
+-        layer.off('error', this._forwardLayerEvent);
+ 
+-        delete this._layers[id];
+-        this._order.splice(this._order.indexOf(id), 1);
++        // Calculate the scales at which the text and icon can be placed without collision.
+ 
+-        this._updates.allLayers = true;
+-        this._updates.events.push(['layer.remove', {layer: layer}]);
+-        this._updates.changed = true;
++        var glyphScale = hasText ?
++            collisionTile.placeCollisionFeature(symbolInstance.textCollisionFeature,
++                    layout['text-allow-overlap'], layout['symbol-avoid-edges']) :
++            collisionTile.minScale;
+ 
+-        return this;
+-    },
++        var iconScale = hasIcon ?
++            collisionTile.placeCollisionFeature(symbolInstance.iconCollisionFeature,
++                    layout['icon-allow-overlap'], layout['symbol-avoid-edges']) :
++            collisionTile.minScale;
+ 
+-    /**
+-     * Return the style layer object with the given `id`.
+-     *
+-     * @param {string} id - id of the desired layer
+-     * @returns {?Object} a layer, if one with the given `id` exists
+-     * @private
+-     */
+-    getLayer: function(id) {
+-        return this._layers[id];
+-    },
+ 
+-    /**
+-     * If a layer has a `ref` property that makes it derive some values
+-     * from another layer, return that referent layer. Otherwise,
+-     * returns the layer itself.
+-     * @param {string} id the layer's id
+-     * @returns {Layer} the referent layer or the layer itself
+-     * @private
+-     */
+-    getReferentLayer: function(id) {
+-        var layer = this.getLayer(id);
+-        if (layer.ref) {
+-            layer = this.getLayer(layer.ref);
+-        }
+-        return layer;
+-    },
++        // Combine the scales for icons and text.
+ 
+-    setLayerZoomRange: function(layerId, minzoom, maxzoom) {
+-        this._checkLoaded();
++        if (!iconWithoutText && !textWithoutIcon) {
++            iconScale = glyphScale = Math.max(iconScale, glyphScale);
++        } else if (!textWithoutIcon && glyphScale) {
++            glyphScale = Math.max(iconScale, glyphScale);
++        } else if (!iconWithoutText && iconScale) {
++            iconScale = Math.max(iconScale, glyphScale);
++        }
+ 
+-        var layer = this.getReferentLayer(layerId);
+ 
+-        if (layer.minzoom === minzoom && layer.maxzoom === maxzoom) return this;
++        // Insert final placement into collision tree and add glyphs/icons to buffers
+ 
+-        if (minzoom != null) {
+-            layer.minzoom = minzoom;
+-        }
+-        if (maxzoom != null) {
+-            layer.maxzoom = maxzoom;
++        if (hasText) {
++            collisionTile.insertCollisionFeature(symbolInstance.textCollisionFeature, glyphScale, layout['text-ignore-placement']);
++            if (glyphScale <= maxScale) {
++                this.addSymbols('glyph', symbolInstance.glyphQuads, glyphScale, layout['text-keep-upright'], textAlongLine, collisionTile.angle);
++            }
+         }
+-        return this._updateLayer(layer);
+-    },
+ 
+-    setFilter: function(layerId, filter) {
+-        this._checkLoaded();
++        if (hasIcon) {
++            collisionTile.insertCollisionFeature(symbolInstance.iconCollisionFeature, iconScale, layout['icon-ignore-placement']);
++            if (iconScale <= maxScale) {
++                this.addSymbols('icon', symbolInstance.iconQuads, iconScale, layout['icon-keep-upright'], iconAlongLine, collisionTile.angle);
++            }
++        }
+ 
+-        var layer = this.getReferentLayer(layerId);
++    }
+ 
+-        if (this._handleErrors(validateStyle.filter, 'layers.' + layer.id + '.filter', filter)) return this;
++    if (showCollisionBoxes) this.addToDebugBuffers(collisionTile);
++};
+ 
+-        if (util.deepEqual(layer.filter, filter)) return this;
+-        layer.filter = util.clone(filter);
++SymbolBucket.prototype.addSymbols = function(programName, quads, scale, keepUpright, alongLine, placementAngle) {
+ 
+-        return this._updateLayer(layer);
+-    },
++    var group = this.makeRoomFor(programName, 4 * quads.length);
+ 
+-    /**
+-     * Get a layer's filter object
+-     * @param {string} layer the layer to inspect
+-     * @returns {*} the layer's filter, if any
+-     * @private
+-     */
+-    getFilter: function(layer) {
+-        return this.getReferentLayer(layer).filter;
+-    },
++    var elementArray = group.layout.element;
++    var vertexArray = group.layout.vertex;
+ 
+-    setLayoutProperty: function(layerId, name, value) {
+-        this._checkLoaded();
++    var zoom = this.zoom;
++    var placementZoom = Math.max(Math.log(scale) / Math.LN2 + zoom, 0);
+ 
+-        var layer = this.getReferentLayer(layerId);
++    for (var k = 0; k < quads.length; k++) {
+ 
+-        if (util.deepEqual(layer.getLayoutProperty(name), value)) return this;
++        var symbol = quads[k],
++            angle = symbol.angle;
+ 
+-        layer.setLayoutProperty(name, value);
+-        return this._updateLayer(layer);
+-    },
++        // drop upside down versions of glyphs
++        var a = (angle + placementAngle + Math.PI) % (Math.PI * 2);
++        if (keepUpright && alongLine && (a <= Math.PI / 2 || a > Math.PI * 3 / 2)) continue;
+ 
+-    /**
+-     * Get a layout property's value from a given layer
+-     * @param {string} layer the layer to inspect
+-     * @param {string} name the name of the layout property
+-     * @returns {*} the property value
+-     * @private
+-     */
+-    getLayoutProperty: function(layer, name) {
+-        return this.getReferentLayer(layer).getLayoutProperty(name);
+-    },
++        var tl = symbol.tl,
++            tr = symbol.tr,
++            bl = symbol.bl,
++            br = symbol.br,
++            tex = symbol.tex,
++            anchorPoint = symbol.anchorPoint,
+ 
+-    setPaintProperty: function(layerId, name, value, klass) {
+-        this._checkLoaded();
++            minZoom = Math.max(zoom + Math.log(symbol.minScale) / Math.LN2, placementZoom),
++            maxZoom = Math.min(zoom + Math.log(symbol.maxScale) / Math.LN2, 25);
+ 
+-        var layer = this.getLayer(layerId);
++        if (maxZoom <= minZoom) continue;
+ 
+-        if (util.deepEqual(layer.getPaintProperty(name, klass), value)) return this;
++        // Lower min zoom so that while fading out the label it can be shown outside of collision-free zoom levels
++        if (minZoom === placementZoom) minZoom = 0;
+ 
+-        var wasFeatureConstant = layer.isPaintValueFeatureConstant(name);
+-        layer.setPaintProperty(name, value, klass);
++        var index = addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tl.x, tl.y, tex.x, tex.y, minZoom, maxZoom, placementZoom);
++        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tr.x, tr.y, tex.x + tex.w, tex.y, minZoom, maxZoom, placementZoom);
++        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, bl.x, bl.y, tex.x, tex.y + tex.h, minZoom, maxZoom, placementZoom);
++        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, br.x, br.y, tex.x + tex.w, tex.y + tex.h, minZoom, maxZoom, placementZoom);
+ 
+-        var isFeatureConstant = !(StyleFunction.isFunctionDefinition(value) && value.property !== '$zoom' && value.property !== undefined);
++        elementArray.emplaceBack(index, index + 1, index + 2);
++        elementArray.emplaceBack(index + 1, index + 2, index + 3);
++    }
+ 
+-        if (!isFeatureConstant || !wasFeatureConstant) {
+-            this._updates.layers[layerId] = true;
+-            if (layer.source) {
+-                this._updates.sources[layer.source] = true;
+-            }
+-        }
++};
+ 
+-        return this.updateClasses(layerId, name);
+-    },
++SymbolBucket.prototype.updateIcons = function(icons) {
++    this.recalculateStyleLayers();
++    var iconValue = this.layer.layout['icon-image'];
++    if (!iconValue) return;
+ 
+-    getPaintProperty: function(layer, name, klass) {
+-        return this.getLayer(layer).getPaintProperty(name, klass);
+-    },
++    for (var i = 0; i < this.features.length; i++) {
++        var iconName = resolveTokens(this.features[i].properties, iconValue);
++        if (iconName)
++            icons[iconName] = true;
++    }
++};
+ 
+-    updateClasses: function (layerId, paintName) {
+-        this._updates.changed = true;
+-        if (!layerId) {
+-            this._updates.allPaintProps = true;
+-        } else {
+-            var props = this._updates.paintProps;
+-            if (!props[layerId]) props[layerId] = {};
+-            props[layerId][paintName || 'all'] = true;
+-        }
+-        return this;
+-    },
++SymbolBucket.prototype.updateFont = function(stacks) {
++    this.recalculateStyleLayers();
++    var fontName = this.layer.layout['text-font'],
++        stack = stacks[fontName] = stacks[fontName] || {};
+ 
+-    serialize: function() {
+-        return util.filterObject({
+-            version: this.stylesheet.version,
+-            name: this.stylesheet.name,
+-            metadata: this.stylesheet.metadata,
+-            center: this.stylesheet.center,
+-            zoom: this.stylesheet.zoom,
+-            bearing: this.stylesheet.bearing,
+-            pitch: this.stylesheet.pitch,
+-            sprite: this.stylesheet.sprite,
+-            glyphs: this.stylesheet.glyphs,
+-            transition: this.stylesheet.transition,
+-            sources: util.mapObject(this.sources, function(source) {
+-                return source.serialize();
+-            }),
+-            layers: this._order.map(function(id) {
+-                return this._layers[id].serialize();
+-            }, this)
+-        }, function(value) { return value !== undefined; });
+-    },
++    this.textFeatures = resolveText(this.features, this.layer.layout, stack);
++};
+ 
+-    _updateLayer: function (layer) {
+-        this._updates.layers[layer.id] = true;
+-        if (layer.source) {
+-            this._updates.sources[layer.source] = true;
+-        }
+-        this._updates.changed = true;
+-        return this;
+-    },
++SymbolBucket.prototype.addToDebugBuffers = function(collisionTile) {
++    var group = this.makeRoomFor('collisionBox', 0);
++    var vertexArray = group.layout.vertex;
++    var angle = -collisionTile.angle;
++    var yStretch = collisionTile.yStretch;
+ 
+-    _flattenRenderedFeatures: function(sourceResults) {
+-        var features = [];
+-        for (var l = this._order.length - 1; l >= 0; l--) {
+-            var layerID = this._order[l];
+-            for (var s = 0; s < sourceResults.length; s++) {
+-                var layerFeatures = sourceResults[s][layerID];
+-                if (layerFeatures) {
+-                    for (var f = 0; f < layerFeatures.length; f++) {
+-                        features.push(layerFeatures[f]);
+-                    }
+-                }
+-            }
+-        }
+-        return features;
+-    },
++    for (var j = 0; j < this.symbolInstances.length; j++) {
++        for (var i = 0; i < 2; i++) {
++            var feature = this.symbolInstances[j][i === 0 ? 'textCollisionFeature' : 'iconCollisionFeature'];
++            if (!feature) continue;
+ 
+-    queryRenderedFeatures: function(queryGeometry, params, zoom, bearing) {
+-        if (params && params.filter) {
+-            this._handleErrors(validateStyle.filter, 'queryRenderedFeatures.filter', params.filter, true);
+-        }
++            for (var b = feature.boxStartIndex; b < feature.boxEndIndex; b++) {
++                var box = this.collisionBoxArray.get(b);
++                var anchorPoint = box.anchorPoint;
+ 
+-        var sourceResults = [];
+-        for (var id in this.sources) {
+-            var source = this.sources[id];
+-            if (source.queryRenderedFeatures) {
+-                sourceResults.push(source.queryRenderedFeatures(queryGeometry, params, zoom, bearing));
++                var tl = new Point(box.x1, box.y1 * yStretch)._rotate(angle);
++                var tr = new Point(box.x2, box.y1 * yStretch)._rotate(angle);
++                var bl = new Point(box.x1, box.y2 * yStretch)._rotate(angle);
++                var br = new Point(box.x2, box.y2 * yStretch)._rotate(angle);
++
++                var maxZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.maxScale) / Math.LN2));
++                var placementZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.placementScale) / Math.LN2));
++
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
+             }
+         }
+-        return this._flattenRenderedFeatures(sourceResults);
+-    },
++    }
++};
+ 
+-    querySourceFeatures: function(sourceID, params) {
+-        if (params && params.filter) {
+-            this._handleErrors(validateStyle.filter, 'querySourceFeatures.filter', params.filter, true);
+-        }
+-        var source = this.getSource(sourceID);
+-        return source && source.querySourceFeatures ? source.querySourceFeatures(params) : [];
+-    },
++function SymbolInstance(anchor, line, shapedText, shapedIcon, layout, addToBuffers, index, collisionBoxArray, featureIndex, sourceLayerIndex, bucketIndex,
++                        textBoxScale, textPadding, textAlongLine,
++                        iconBoxScale, iconPadding, iconAlongLine) {
+ 
+-    _handleErrors: function(validate, key, value, throws, props) {
+-        var action = throws ? validateStyle.throwErrors : validateStyle.emitErrors;
+-        var result = validate.call(validateStyle, util.extend({
+-            key: key,
+-            style: this.serialize(),
+-            value: value,
+-            styleSpec: styleSpec
+-        }, props));
+-        return action.call(validateStyle, this, result);
+-    },
++    this.x = anchor.x;
++    this.y = anchor.y;
++    this.index = index;
++    this.hasText = !!shapedText;
++    this.hasIcon = !!shapedIcon;
+ 
+-    _remove: function() {
+-        this.dispatcher.remove();
+-    },
++    if (this.hasText) {
++        this.glyphQuads = addToBuffers ? getGlyphQuads(anchor, shapedText, textBoxScale, line, layout, textAlongLine) : [];
++        this.textCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
++                shapedText, textBoxScale, textPadding, textAlongLine, false);
++    }
+ 
+-    _reloadSource: function(id) {
+-        this.sources[id].reload();
+-    },
++    if (this.hasIcon) {
++        this.iconQuads = addToBuffers ? getIconQuads(anchor, shapedIcon, iconBoxScale, line, layout, iconAlongLine) : [];
++        this.iconCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
++                shapedIcon, iconBoxScale, iconPadding, iconAlongLine, true);
++    }
++}
+ 
+-    _updateSources: function(transform) {
+-        for (var id in this.sources) {
+-            this.sources[id].update(transform);
+-        }
+-    },
++},{"../../symbol/anchor":316,"../../symbol/clip_line":318,"../../symbol/collision_feature":320,"../../symbol/get_anchors":322,"../../symbol/mergelines":325,"../../symbol/quads":326,"../../symbol/resolve_text":327,"../../symbol/shaping":328,"../../util/token":361,"../../util/util":362,"../bucket":260,"../load_geometry":267,"point-geometry":400}],265:[function(require,module,exports){
++'use strict';
+ 
+-    _redoPlacement: function() {
+-        for (var id in this.sources) {
+-            if (this.sources[id].redoPlacement) this.sources[id].redoPlacement();
+-        }
+-    },
++var assert = require('assert');
+ 
+-    _forwardSourceEvent: function(e) {
+-        this.fire('source.' + e.type, util.extend({source: e.target}, e));
+-    },
++module.exports = Buffer;
+ 
+-    _forwardTileEvent: function(e) {
+-        this.fire(e.type, util.extend({source: e.target}, e));
+-    },
++/**
++ * The `Buffer` class turns a `StructArray` into a WebGL buffer. Each member of the StructArray's
++ * Struct type is converted to a WebGL atribute.
++ *
++ * @class Buffer
++ * @private
++ * @param {object} array A serialized StructArray.
++ * @param {object} arrayType A serialized StructArrayType.
++ * @param {BufferType} type
++ */
++function Buffer(array, arrayType, type) {
++    this.arrayBuffer = array.arrayBuffer;
++    this.length = array.length;
++    this.attributes = arrayType.members;
++    this.itemSize = arrayType.bytesPerElement;
++    this.type = type;
++    this.arrayType = arrayType;
++}
+ 
+-    _forwardLayerEvent: function(e) {
+-        this.fire('layer.' + e.type, util.extend({layer: {id: e.target.id}}, e));
+-    },
++/**
++ * Bind this buffer to a WebGL context.
++ * @private
++ * @param gl The WebGL context
++ */
++Buffer.prototype.bind = function(gl) {
++    var type = gl[this.type];
+ 
+-    // Callbacks from web workers
++    if (!this.buffer) {
++        this.buffer = gl.createBuffer();
++        gl.bindBuffer(type, this.buffer);
++        gl.bufferData(type, this.arrayBuffer, gl.STATIC_DRAW);
+ 
+-    'get sprite json': function(params, callback) {
+-        var sprite = this.sprite;
+-        if (sprite.loaded()) {
+-            callback(null, { sprite: sprite.data, retina: sprite.retina });
+-        } else {
+-            sprite.on('load', function() {
+-                callback(null, { sprite: sprite.data, retina: sprite.retina });
+-            });
+-        }
+-    },
++        // dump array buffer once it's bound to gl
++        this.arrayBuffer = null;
++    } else {
++        gl.bindBuffer(type, this.buffer);
++    }
++};
+ 
+-    'get icons': function(params, callback) {
+-        var sprite = this.sprite;
+-        var spriteAtlas = this.spriteAtlas;
+-        if (sprite.loaded()) {
+-            spriteAtlas.setSprite(sprite);
+-            spriteAtlas.addIcons(params.icons, callback);
+-        } else {
+-            sprite.on('load', function() {
+-                spriteAtlas.setSprite(sprite);
+-                spriteAtlas.addIcons(params.icons, callback);
+-            });
+-        }
+-    },
++/**
++ * @enum {string} AttributeType
++ * @private
++ * @readonly
++ */
++var AttributeType = {
++    Int8:   'BYTE',
++    Uint8:  'UNSIGNED_BYTE',
++    Int16:  'SHORT',
++    Uint16: 'UNSIGNED_SHORT'
++};
+ 
+-    'get glyphs': function(params, callback) {
+-        var stacks = params.stacks,
+-            remaining = Object.keys(stacks).length,
+-            allGlyphs = {};
++/**
++ * Set the attribute pointers in a WebGL context
++ * @private
++ * @param gl The WebGL context
++ * @param program The active WebGL program
++ */
++Buffer.prototype.setVertexAttribPointers = function(gl, program) {
++    for (var j = 0; j < this.attributes.length; j++) {
++        var member = this.attributes[j];
++        var attribIndex = program[member.name];
++        assert(attribIndex !== undefined, 'array member "' + member.name + '" name does not match shader attribute name');
+ 
+-        for (var fontName in stacks) {
+-            this.glyphSource.getSimpleGlyphs(fontName, stacks[fontName], params.uid, done);
+-        }
++        gl.vertexAttribPointer(
++            attribIndex,
++            member.components,
++            gl[AttributeType[member.type]],
++            false,
++            this.arrayType.bytesPerElement,
++            member.offset
++        );
++    }
++};
+ 
+-        function done(err, glyphs, fontName) {
+-            if (err) console.error(err);
++/**
++ * Destroy the GL buffer bound to the given WebGL context
++ * @private
++ * @param gl The WebGL context
++ */
++Buffer.prototype.destroy = function(gl) {
++    if (this.buffer) {
++        gl.deleteBuffer(this.buffer);
++    }
++};
+ 
+-            allGlyphs[fontName] = glyphs;
+-            remaining--;
++/**
++ * @enum {string} BufferType
++ * @private
++ * @readonly
++ */
++Buffer.BufferType = {
++    VERTEX: 'ARRAY_BUFFER',
++    ELEMENT: 'ELEMENT_ARRAY_BUFFER'
++};
+ 
+-            if (remaining === 0)
+-                callback(null, allGlyphs);
+-        }
+-    }
+-});
++/**
++ * An `BufferType.ELEMENT` buffer holds indicies of a corresponding `BufferType.VERTEX` buffer.
++ * These indicies are stored in the `BufferType.ELEMENT` buffer as `UNSIGNED_SHORT`s.
++ *
++ * @private
++ * @readonly
++ */
++Buffer.ELEMENT_ATTRIBUTE_TYPE = 'Uint16';
++
++/**
++ * WebGL performs best if vertex attribute offsets are aligned to 4 byte boundaries.
++ * @private
++ * @readonly
++ */
++Buffer.VERTEX_ATTRIBUTE_ALIGNMENT = 4;
+ 
+-},{"../render/line_atlas":270,"../source/source":279,"../symbol/glyph_source":311,"../symbol/sprite_atlas":316,"../util/ajax":334,"../util/browser":335,"../util/dispatcher":337,"../util/evented":341,"../util/mapbox":346,"../util/util":349,"./animation_loop":287,"./image_sprite":288,"./style_function":292,"./style_layer":293,"./style_spec":300,"./validate_style":302}],291:[function(require,module,exports){
++},{"assert":29}],266:[function(require,module,exports){
+ 'use strict';
+ 
+-var MapboxGLFunction = require('./style_function');
+-var parseColor = require('./parse_color');
+-var util = require('../util/util');
++var Point = require('point-geometry');
++var loadGeometry = require('./load_geometry');
++var EXTENT = require('./bucket').EXTENT;
++var featureFilter = require('feature-filter');
++var StructArrayType = require('../util/struct_array');
++var Grid = require('grid-index');
++var DictionaryCoder = require('../util/dictionary_coder');
++var vt = require('vector-tile');
++var Protobuf = require('pbf');
++var GeoJSONFeature = require('../util/vectortile_to_geojson');
++var arraysIntersect = require('../util/util').arraysIntersect;
+ 
+-module.exports = StyleDeclaration;
++var intersection = require('../util/intersection_tests');
++var multiPolygonIntersectsBufferedMultiPoint = intersection.multiPolygonIntersectsBufferedMultiPoint;
++var multiPolygonIntersectsMultiPolygon = intersection.multiPolygonIntersectsMultiPolygon;
++var multiPolygonIntersectsBufferedMultiLine = intersection.multiPolygonIntersectsBufferedMultiLine;
+ 
+-function StyleDeclaration(reference, value) {
+-    this.type = reference.type;
+-    this.transitionable = reference.transition;
+-    this.value = util.clone(value);
+-    this.isFunction = !!value.stops;
+ 
+-    // immutable representation of value. used for comparison
+-    this.json = JSON.stringify(this.value);
++var FeatureIndexArray = new StructArrayType({
++    members: [
++        // the index of the feature in the original vectortile
++        { type: 'Uint32', name: 'featureIndex' },
++        // the source layer the feature appears in
++        { type: 'Uint16', name: 'sourceLayerIndex' },
++        // the bucket the feature appears in
++        { type: 'Uint16', name: 'bucketIndex' }
++    ]});
+ 
+-    var parsedValue = this.type === 'color' ? parseColor(this.value) : value;
+-    this.calculate = MapboxGLFunction[reference.function || 'piecewise-constant'](parsedValue);
+-    this.isFeatureConstant = this.calculate.isFeatureConstant;
+-    this.isZoomConstant = this.calculate.isZoomConstant;
++module.exports = FeatureIndex;
+ 
+-    if (reference.function === 'piecewise-constant' && reference.transition) {
+-        this.calculate = transitioned(this.calculate);
++function FeatureIndex(coord, overscaling, collisionTile) {
++    if (coord.grid) {
++        var serialized = coord;
++        var rawTileData = overscaling;
++        coord = serialized.coord;
++        overscaling = serialized.overscaling;
++        this.grid = new Grid(serialized.grid);
++        this.featureIndexArray = new FeatureIndexArray(serialized.featureIndexArray);
++        this.rawTileData = rawTileData;
++        this.bucketLayerIDs = serialized.bucketLayerIDs;
++    } else {
++        this.grid = new Grid(EXTENT, 16, 0);
++        this.featureIndexArray = new FeatureIndexArray();
+     }
++    this.coord = coord;
++    this.overscaling = overscaling;
++    this.x = coord.x;
++    this.y = coord.y;
++    this.z = coord.z - Math.log(overscaling) / Math.LN2;
++    this.setCollisionTile(collisionTile);
++}
+ 
+-    if (!this.isFeatureConstant && !this.isZoomConstant) {
+-        this.stopZoomLevels = [];
+-        var interpolationAmountStops = [];
+-        var stops = this.value.stops;
+-        for (var i = 0; i < this.value.stops.length; i++) {
+-            var zoom = stops[i][0].zoom;
+-            if (this.stopZoomLevels.indexOf(zoom) < 0) {
+-                this.stopZoomLevels.push(zoom);
+-                interpolationAmountStops.push([zoom, interpolationAmountStops.length]);
+-            }
++FeatureIndex.prototype.insert = function(feature, featureIndex, sourceLayerIndex, bucketIndex) {
++    var key = this.featureIndexArray.length;
++    this.featureIndexArray.emplaceBack(featureIndex, sourceLayerIndex, bucketIndex);
++    var geometry = loadGeometry(feature);
++
++    for (var r = 0; r < geometry.length; r++) {
++        var ring = geometry[r];
++
++        // TODO: skip holes when we start using vector tile spec 2.0
++
++        var bbox = [Infinity, Infinity, -Infinity, -Infinity];
++        for (var i = 0; i < ring.length; i++) {
++            var p = ring[i];
++            bbox[0] = Math.min(bbox[0], p.x);
++            bbox[1] = Math.min(bbox[1], p.y);
++            bbox[2] = Math.max(bbox[2], p.x);
++            bbox[3] = Math.max(bbox[3], p.y);
+         }
+ 
+-        this.calculateInterpolationT = MapboxGLFunction.interpolated({
+-            stops: interpolationAmountStops,
+-            base: value.base
+-        });
++        this.grid.insert(key, bbox[0], bbox[1], bbox[2], bbox[3]);
+     }
++};
++
++FeatureIndex.prototype.setCollisionTile = function(collisionTile) {
++    this.collisionTile = collisionTile;
++};
++
++FeatureIndex.prototype.serialize = function() {
++    var data = {
++        coord: this.coord,
++        overscaling: this.overscaling,
++        grid: this.grid.toArrayBuffer(),
++        featureIndexArray: this.featureIndexArray.serialize(),
++        bucketLayerIDs: this.bucketLayerIDs
++    };
++    return {
++        data: data,
++        transferables: [data.grid, data.featureIndexArray.arrayBuffer]
++    };
++};
++
++function translateDistance(translate) {
++    return Math.sqrt(translate[0] * translate[0] + translate[1] * translate[1]);
+ }
+ 
+-function transitioned(calculate) {
+-    return function(globalProperties, featureProperties) {
+-        var z = globalProperties.zoom;
+-        var zh = globalProperties.zoomHistory;
+-        var duration = globalProperties.duration;
++// Finds features in this tile at a particular position.
++FeatureIndex.prototype.query = function(args, styleLayers) {
++    if (!this.vtLayers) {
++        this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
++        this.sourceLayerCoder = new DictionaryCoder(this.vtLayers ? Object.keys(this.vtLayers).sort() : ['_geojsonTileLayer']);
++    }
+ 
+-        var fraction = z % 1;
+-        var t = Math.min((Date.now() - zh.lastIntegerZoomTime) / duration, 1);
+-        var fromScale = 1;
+-        var toScale = 1;
+-        var mix, from, to;
++    var result = {};
+ 
+-        if (z > zh.lastIntegerZoom) {
+-            mix = fraction + (1 - fraction) * t;
+-            fromScale *= 2;
+-            from = calculate({zoom: z - 1}, featureProperties);
+-            to = calculate({zoom: z}, featureProperties);
+-        } else {
+-            mix = 1 - (1 - t) * fraction;
+-            to = calculate({zoom: z}, featureProperties);
+-            from = calculate({zoom: z + 1}, featureProperties);
+-            fromScale /= 2;
++    var params = args.params || {},
++        pixelsToTileUnits = EXTENT / args.tileSize / args.scale,
++        filter = featureFilter(params.filter);
++
++    // Features are indexed their original geometries. The rendered geometries may
++    // be buffered, translated or offset. Figure out how much the search radius needs to be
++    // expanded by to include these features.
++    var additionalRadius = 0;
++    for (var id in styleLayers) {
++        var styleLayer = styleLayers[id];
++        var paint = styleLayer.paint;
++
++        var styleLayerDistance = 0;
++        if (styleLayer.type === 'line') {
++            styleLayerDistance = getLineWidth(paint) / 2 + Math.abs(paint['line-offset']) + translateDistance(paint['line-translate']);
++        } else if (styleLayer.type === 'fill') {
++            styleLayerDistance = translateDistance(paint['fill-translate']);
++        } else if (styleLayer.type === 'circle') {
++            styleLayerDistance = paint['circle-radius'] + translateDistance(paint['circle-translate']);
+         }
++        additionalRadius = Math.max(additionalRadius, styleLayerDistance * pixelsToTileUnits);
++    }
+ 
+-        return {
+-            from: from,
+-            fromScale: fromScale,
+-            to: to,
+-            toScale: toScale,
+-            t: mix
+-        };
+-    };
+-}
++    var queryGeometry = args.queryGeometry.map(function(q) {
++        return q.map(function(p) {
++            return new Point(p.x, p.y);
++        });
++    });
+ 
+-},{"../util/util":349,"./parse_color":289,"./style_function":292}],292:[function(require,module,exports){
+-'use strict';
++    var minX = Infinity;
++    var minY = Infinity;
++    var maxX = -Infinity;
++    var maxY = -Infinity;
++    for (var i = 0; i < queryGeometry.length; i++) {
++        var ring = queryGeometry[i];
++        for (var k = 0; k < ring.length; k++) {
++            var p = ring[k];
++            minX = Math.min(minX, p.x);
++            minY = Math.min(minY, p.y);
++            maxX = Math.max(maxX, p.x);
++            maxY = Math.max(maxY, p.y);
++        }
++    }
+ 
+-var MapboxGLFunction = require('mapbox-gl-function');
++    var matching = this.grid.query(minX - additionalRadius, minY - additionalRadius, maxX + additionalRadius, maxY + additionalRadius);
++    matching.sort(topDownFeatureComparator);
++    this.filterMatching(result, matching, this.featureIndexArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+ 
+-exports.interpolated = function(parameters) {
+-    var inner = MapboxGLFunction.interpolated(parameters);
+-    var outer = function(globalProperties, featureProperties) {
+-        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
+-    };
+-    outer.isFeatureConstant = inner.isFeatureConstant;
+-    outer.isZoomConstant = inner.isZoomConstant;
+-    return outer;
+-};
++    var matchingSymbols = this.collisionTile.queryRenderedSymbols(minX, minY, maxX, maxY, args.scale);
++    matchingSymbols.sort();
++    this.filterMatching(result, matchingSymbols, this.collisionTile.collisionBoxArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+ 
+-exports['piecewise-constant'] = function(parameters) {
+-    var inner = MapboxGLFunction['piecewise-constant'](parameters);
+-    var outer = function(globalProperties, featureProperties) {
+-        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
+-    };
+-    outer.isFeatureConstant = inner.isFeatureConstant;
+-    outer.isZoomConstant = inner.isZoomConstant;
+-    return outer;
++    return result;
+ };
+ 
+-exports.isFunctionDefinition = MapboxGLFunction.isFunctionDefinition;
++function topDownFeatureComparator(a, b) {
++    return b - a;
++}
+ 
+-},{"mapbox-gl-function":374}],293:[function(require,module,exports){
+-'use strict';
++function getLineWidth(paint) {
++    if (paint['line-gap-width'] > 0) {
++        return paint['line-gap-width'] + 2 * paint['line-width'];
++    } else {
++        return paint['line-width'];
++    }
++}
+ 
+-var util = require('../util/util');
+-var StyleTransition = require('./style_transition');
+-var StyleDeclaration = require('./style_declaration');
+-var styleSpec = require('./style_spec');
+-var validateStyle = require('./validate_style');
+-var parseColor = require('./parse_color');
+-var Evented = require('../util/evented');
++FeatureIndex.prototype.filterMatching = function(result, matching, array, queryGeometry, filter, filterLayerIDs, styleLayers, bearing, pixelsToTileUnits) {
++    var previousIndex;
++    for (var k = 0; k < matching.length; k++) {
++        var index = matching[k];
+ 
+-module.exports = StyleLayer;
++        // don't check the same feature more than once
++        if (index === previousIndex) continue;
++        previousIndex = index;
+ 
+-var TRANSITION_SUFFIX = '-transition';
++        var match = array.get(index);
+ 
+-StyleLayer.create = function(layer, refLayer) {
+-    var Classes = {
+-        background: require('./style_layer/background_style_layer'),
+-        circle: require('./style_layer/circle_style_layer'),
+-        fill: require('./style_layer/fill_style_layer'),
+-        line: require('./style_layer/line_style_layer'),
+-        raster: require('./style_layer/raster_style_layer'),
+-        symbol: require('./style_layer/symbol_style_layer')
+-    };
+-    return new Classes[(refLayer || layer).type](layer, refLayer);
+-};
++        var layerIDs = this.bucketLayerIDs[match.bucketIndex];
++        if (filterLayerIDs && !arraysIntersect(filterLayerIDs, layerIDs)) continue;
+ 
+-function StyleLayer(layer, refLayer) {
+-    this.set(layer, refLayer);
+-}
++        var sourceLayerName = this.sourceLayerCoder.decode(match.sourceLayerIndex);
++        var sourceLayer = this.vtLayers[sourceLayerName];
++        var feature = sourceLayer.feature(match.featureIndex);
+ 
+-StyleLayer.prototype = util.inherit(Evented, {
++        if (!filter(feature)) continue;
+ 
+-    set: function(layer, refLayer) {
+-        this.id = layer.id;
+-        this.ref = layer.ref;
+-        this.metadata = layer.metadata;
+-        this.type = (refLayer || layer).type;
+-        this.source = (refLayer || layer).source;
+-        this.sourceLayer = (refLayer || layer)['source-layer'];
+-        this.minzoom = (refLayer || layer).minzoom;
+-        this.maxzoom = (refLayer || layer).maxzoom;
+-        this.filter = (refLayer || layer).filter;
++        var geometry = null;
++
++        for (var l = 0; l < layerIDs.length; l++) {
++            var layerID = layerIDs[l];
++
++            if (filterLayerIDs && filterLayerIDs.indexOf(layerID) < 0) {
++                continue;
++            }
++
++            var styleLayer = styleLayers[layerID];
++            if (!styleLayer) continue;
++
++            var translatedPolygon;
++            if (styleLayer.type !== 'symbol') {
++                // all symbols already match the style
+ 
+-        this.paint = {};
+-        this.layout = {};
++                if (!geometry) geometry = loadGeometry(feature);
+ 
+-        this._paintSpecifications = styleSpec['paint_' + this.type];
+-        this._layoutSpecifications = styleSpec['layout_' + this.type];
++                var paint = styleLayer.paint;
+ 
+-        this._paintTransitions = {}; // {[propertyName]: StyleTransition}
+-        this._paintTransitionOptions = {}; // {[className]: {[propertyName]: { duration:Number, delay:Number }}}
+-        this._paintDeclarations = {}; // {[className]: {[propertyName]: StyleDeclaration}}
+-        this._layoutDeclarations = {}; // {[propertyName]: StyleDeclaration}
+-        this._layoutFunctions = {}; // {[propertyName]: Boolean}
++                if (styleLayer.type === 'line') {
++                    translatedPolygon = translate(queryGeometry,
++                            paint['line-translate'], paint['line-translate-anchor'],
++                            bearing, pixelsToTileUnits);
++                    var halfWidth = getLineWidth(paint) / 2 * pixelsToTileUnits;
++                    if (paint['line-offset']) {
++                        geometry = offsetLine(geometry, paint['line-offset'] * pixelsToTileUnits);
++                    }
++                    if (!multiPolygonIntersectsBufferedMultiLine(translatedPolygon, geometry, halfWidth)) continue;
+ 
+-        var paintName, layoutName;
++                } else if (styleLayer.type === 'fill') {
++                    translatedPolygon = translate(queryGeometry,
++                            paint['fill-translate'], paint['fill-translate-anchor'],
++                            bearing, pixelsToTileUnits);
++                    if (!multiPolygonIntersectsMultiPolygon(translatedPolygon, geometry)) continue;
+ 
+-        // Resolve paint declarations
+-        for (var key in layer) {
+-            var match = key.match(/^paint(?:\.(.*))?$/);
+-            if (match) {
+-                var klass = match[1] || '';
+-                for (paintName in layer[key]) {
+-                    this.setPaintProperty(paintName, layer[key][paintName], klass);
++                } else if (styleLayer.type === 'circle') {
++                    translatedPolygon = translate(queryGeometry,
++                            paint['circle-translate'], paint['circle-translate-anchor'],
++                            bearing, pixelsToTileUnits);
++                    var circleRadius = paint['circle-radius'] * pixelsToTileUnits;
++                    if (!multiPolygonIntersectsBufferedMultiPoint(translatedPolygon, geometry, circleRadius)) continue;
+                 }
+             }
+-        }
+ 
+-        // Resolve layout declarations
+-        if (this.ref) {
+-            this._layoutDeclarations = refLayer._layoutDeclarations;
+-        } else {
+-            for (layoutName in layer.layout) {
+-                this.setLayoutProperty(layoutName, layer.layout[layoutName]);
++            var geojsonFeature = new GeoJSONFeature(feature, this.z, this.x, this.y);
++            geojsonFeature.layer = styleLayer.serialize({
++                includeRefProperties: true
++            });
++            var layerResult = result[layerID];
++            if (layerResult === undefined) {
++                layerResult = result[layerID] = [];
+             }
++            layerResult.push(geojsonFeature);
+         }
++    }
++};
+ 
+-        // set initial layout/paint values
+-        for (paintName in this._paintSpecifications) {
+-            this.paint[paintName] = this.getPaintValue(paintName);
+-        }
+-        for (layoutName in this._layoutSpecifications) {
+-            this._updateLayoutValue(layoutName);
+-        }
+-    },
++function translate(queryGeometry, translate, translateAnchor, bearing, pixelsToTileUnits) {
++    if (!translate[0] && !translate[1]) {
++        return queryGeometry;
++    }
+ 
+-    setLayoutProperty: function(name, value) {
++    translate = Point.convert(translate);
+ 
+-        if (value == null) {
+-            delete this._layoutDeclarations[name];
+-        } else {
+-            var key = 'layers.' + this.id + '.layout.' + name;
+-            if (this._handleErrors(validateStyle.layoutProperty, key, name, value)) return;
+-            this._layoutDeclarations[name] = new StyleDeclaration(this._layoutSpecifications[name], value);
++    if (translateAnchor === "viewport") {
++        translate._rotate(-bearing);
++    }
++
++    var translated = [];
++    for (var i = 0; i < queryGeometry.length; i++) {
++        var ring = queryGeometry[i];
++        var translatedRing = [];
++        for (var k = 0; k < ring.length; k++) {
++            translatedRing.push(ring[k].sub(translate._mult(pixelsToTileUnits)));
+         }
+-        this._updateLayoutValue(name);
+-    },
++        translated.push(translatedRing);
++    }
++    return translated;
++}
+ 
+-    getLayoutProperty: function(name) {
+-        return (
+-            this._layoutDeclarations[name] &&
+-            this._layoutDeclarations[name].value
+-        );
+-    },
++function offsetLine(rings, offset) {
++    var newRings = [];
++    var zero = new Point(0, 0);
++    for (var k = 0; k < rings.length; k++) {
++        var ring = rings[k];
++        var newRing = [];
++        for (var i = 0; i < ring.length; i++) {
++            var a = ring[i - 1];
++            var b = ring[i];
++            var c = ring[i + 1];
++            var aToB = i === 0 ? zero : b.sub(a)._unit()._perp();
++            var bToC = i === ring.length - 1 ? zero : c.sub(b)._unit()._perp();
++            var extrude = aToB._add(bToC)._unit();
+ 
+-    getLayoutValue: function(name, globalProperties, featureProperties) {
+-        var specification = this._layoutSpecifications[name];
+-        var declaration = this._layoutDeclarations[name];
++            var cosHalfAngle = extrude.x * bToC.x + extrude.y * bToC.y;
++            extrude._mult(1 / cosHalfAngle);
+ 
+-        if (declaration) {
+-            return declaration.calculate(globalProperties, featureProperties);
+-        } else {
+-            return specification.default;
++            newRing.push(extrude._mult(offset)._add(b));
+         }
+-    },
++        newRings.push(newRing);
++    }
++    return newRings;
++}
+ 
+-    setPaintProperty: function(name, value, klass) {
+-        var validateStyleKey = 'layers.' + this.id + (klass ? '["paint.' + klass + '"].' : '.paint.') + name;
++},{"../util/dictionary_coder":353,"../util/intersection_tests":357,"../util/struct_array":360,"../util/util":362,"../util/vectortile_to_geojson":363,"./bucket":260,"./load_geometry":267,"feature-filter":99,"grid-index":222,"pbf":394,"point-geometry":400,"vector-tile":456}],267:[function(require,module,exports){
++'use strict';
+ 
+-        if (util.endsWith(name, TRANSITION_SUFFIX)) {
+-            if (!this._paintTransitionOptions[klass || '']) {
+-                this._paintTransitionOptions[klass || ''] = {};
+-            }
+-            if (value === null || value === undefined) {
+-                delete this._paintTransitionOptions[klass || ''][name];
+-            } else {
+-                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
+-                this._paintTransitionOptions[klass || ''][name] = value;
+-            }
+-        } else {
+-            if (!this._paintDeclarations[klass || '']) {
+-                this._paintDeclarations[klass || ''] = {};
+-            }
+-            if (value === null || value === undefined) {
+-                delete this._paintDeclarations[klass || ''][name];
+-            } else {
+-                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
+-                this._paintDeclarations[klass || ''][name] = new StyleDeclaration(this._paintSpecifications[name], value);
++var EXTENT = require('./bucket').EXTENT;
++var EXTENT_MIN = EXTENT * -2;
++var EXTENT_MAX = (EXTENT * 2) - 1;
++
++// only log a geometry warning once per context
++var warned = false;
++
++/**
++ * Loads a geometry from a VectorTileFeature and scales it to the common extent
++ * used internally.
++ * @private
++ */
++module.exports = function loadGeometry(feature) {
++    var scale = EXTENT / feature.extent;
++    var geometry = feature.loadGeometry();
++    for (var r = 0; r < geometry.length; r++) {
++        var ring = geometry[r];
++        for (var p = 0; p < ring.length; p++) {
++            var point = ring[p];
++            // round here because mapbox-gl-native uses integers to represent
++            // points and we need to do the same to avoid renering differences.
++            point.x = Math.round(point.x * scale);
++            point.y = Math.round(point.y * scale);
++            if (warned === false && (
++                point.x < EXTENT_MIN ||
++                point.x > EXTENT_MAX ||
++                point.y < EXTENT_MIN ||
++                point.y > EXTENT_MAX)) {
++                console.warn('Geometry exceeds allowed extent, reduce your vector tile buffer size');
++                warned = true;
+             }
+         }
+-    },
++    }
++    return geometry;
++};
+ 
+-    getPaintProperty: function(name, klass) {
+-        klass = klass || '';
+-        if (util.endsWith(name, TRANSITION_SUFFIX)) {
+-            return (
+-                this._paintTransitionOptions[klass] &&
+-                this._paintTransitionOptions[klass][name]
+-            );
+-        } else {
+-            return (
+-                this._paintDeclarations[klass] &&
+-                this._paintDeclarations[klass][name] &&
+-                this._paintDeclarations[klass][name].value
+-            );
+-        }
+-    },
++},{"./bucket":260}],268:[function(require,module,exports){
++'use strict';
+ 
+-    getPaintValue: function(name, globalProperties, featureProperties) {
+-        var specification = this._paintSpecifications[name];
+-        var transition = this._paintTransitions[name];
++module.exports = Coordinate;
+ 
+-        if (transition) {
+-            return transition.calculate(globalProperties, featureProperties);
+-        } else if (specification.type === 'color' && specification.default) {
+-            return parseColor(specification.default);
+-        } else {
+-            return specification.default;
+-        }
+-    },
++/**
++ * A coordinate is a column, row, zoom combination, often used
++ * as the data component of a tile.
++ *
++ * @param {number} column
++ * @param {number} row
++ * @param {number} zoom
++ * @private
++ */
++function Coordinate(column, row, zoom) {
++    this.column = column;
++    this.row = row;
++    this.zoom = zoom;
++}
+ 
+-    getPaintValueStopZoomLevels: function(name) {
+-        var transition = this._paintTransitions[name];
+-        if (transition) {
+-            return transition.declaration.stopZoomLevels;
+-        } else {
+-            return [];
+-        }
+-    },
++Coordinate.prototype = {
+ 
+-    getPaintInterpolationT: function(name, zoom) {
+-        var transition = this._paintTransitions[name];
+-        return transition.declaration.calculateInterpolationT({ zoom: zoom });
++    /**
++     * Create a clone of this coordinate that can be mutated without
++     * changing the original coordinate
++     *
++     * @returns {Coordinate} clone
++     * @private
++     * var coord = new Coordinate(0, 0, 0);
++     * var c2 = coord.clone();
++     * // since coord is cloned, modifying a property of c2 does
++     * // not modify it.
++     * c2.zoom = 2;
++     */
++    clone: function() {
++        return new Coordinate(this.column, this.row, this.zoom);
+     },
+ 
+-    isPaintValueFeatureConstant: function(name) {
+-        var transition = this._paintTransitions[name];
++    /**
++     * Zoom this coordinate to a given zoom level. This returns a new
++     * coordinate object, not mutating the old one.
++     *
++     * @param {number} zoom
++     * @returns {Coordinate} zoomed coordinate
++     * @private
++     * @example
++     * var coord = new Coordinate(0, 0, 0);
++     * var c2 = coord.zoomTo(1);
++     * c2 // equals new Coordinate(0, 0, 1);
++     */
++    zoomTo: function(zoom) { return this.clone()._zoomTo(zoom); },
+ 
+-        if (transition) {
+-            return transition.declaration.isFeatureConstant;
+-        } else {
+-            return true;
+-        }
++    /**
++     * Subtract the column and row values of this coordinate from those
++     * of another coordinate. The other coordinat will be zoomed to the
++     * same level as `this` before the subtraction occurs
++     *
++     * @param {Coordinate} c other coordinate
++     * @returns {Coordinate} result
++     * @private
++     */
++    sub: function(c) { return this.clone()._sub(c); },
++
++    _zoomTo: function(zoom) {
++        var scale = Math.pow(2, zoom - this.zoom);
++        this.column *= scale;
++        this.row *= scale;
++        this.zoom = zoom;
++        return this;
+     },
+ 
+-    isPaintValueZoomConstant: function(name) {
+-        var transition = this._paintTransitions[name];
++    _sub: function(c) {
++        c = c.zoomTo(this.zoom);
++        this.column -= c.column;
++        this.row -= c.row;
++        return this;
++    }
++};
+ 
+-        if (transition) {
+-            return transition.declaration.isZoomConstant;
+-        } else {
+-            return true;
+-        }
+-    },
++},{}],269:[function(require,module,exports){
++'use strict';
+ 
++module.exports = LngLat;
+ 
+-    isHidden: function(zoom) {
+-        if (this.minzoom && zoom < this.minzoom) return true;
+-        if (this.maxzoom && zoom >= this.maxzoom) return true;
+-        if (this.layout['visibility'] === 'none') return true;
+-        if (this.paint[this.type + '-opacity'] === 0) return true;
+-        return false;
+-    },
++var wrap = require('../util/util').wrap;
+ 
+-    updatePaintTransitions: function(classes, options, globalOptions, animationLoop) {
+-        var declarations = util.extend({}, this._paintDeclarations['']);
+-        for (var i = 0; i < classes.length; i++) {
+-            util.extend(declarations, this._paintDeclarations[classes[i]]);
+-        }
++/**
++ * Create a longitude, latitude object from a given longitude and latitude pair in degrees.
++ * Mapbox GL uses Longitude, Latitude coordinate order to match GeoJSON.
++ *
++ * Note that any Mapbox GL method that accepts a `LngLat` object can also accept an
++ * `Array` and will perform an implicit conversion.  The following lines are equivalent:
++ ```
++ map.setCenter([-73.9749, 40.7736]);
++ map.setCenter( new mapboxgl.LngLat(-73.9749, 40.7736) );
++ ```
++ *
++ * @class LngLat
++ * @classdesc A representation of a longitude, latitude point, in degrees.
++ * @param {number} lng longitude
++ * @param {number} lat latitude
++ * @example
++ * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
++ */
++function LngLat(lng, lat) {
++    if (isNaN(lng) || isNaN(lat)) {
++        throw new Error('Invalid LngLat object: (' + lng + ', ' + lat + ')');
++    }
++    this.lng = +lng;
++    this.lat = +lat;
++    if (this.lat > 90 || this.lat < -90) {
++        throw new Error('Invalid LngLat latitude value: must be between -90 and 90');
++    }
++}
+ 
+-        var name;
+-        for (name in declarations) { // apply new declarations
+-            this._applyPaintDeclaration(name, declarations[name], options, globalOptions, animationLoop);
+-        }
+-        for (name in this._paintTransitions) {
+-            if (!(name in declarations)) // apply removed declarations
+-                this._applyPaintDeclaration(name, null, options, globalOptions, animationLoop);
+-        }
+-    },
++/**
++ * Return a new `LngLat` object whose longitude is wrapped to the range (-180, 180).
++ *
++ * @returns {LngLat} wrapped LngLat object
++ * @example
++ * var ll = new mapboxgl.LngLat(286.0251, 40.7736);
++ * var wrapped = ll.wrap();
++ * wrapped.lng; // = -73.9749
++ */
++LngLat.prototype.wrap = function () {
++    return new LngLat(wrap(this.lng, -180, 180), this.lat);
++};
+ 
+-    updatePaintTransition: function(name, classes, options, globalOptions, animationLoop) {
+-        var declaration = this._paintDeclarations[''][name];
+-        for (var i = 0; i < classes.length; i++) {
+-            var classPaintDeclarations = this._paintDeclarations[classes[i]];
+-            if (classPaintDeclarations && classPaintDeclarations[name]) {
+-                declaration = classPaintDeclarations[name];
+-            }
+-        }
+-        this._applyPaintDeclaration(name, declaration, options, globalOptions, animationLoop);
+-    },
++/**
++ * Return a `LngLat` as an array
++ *
++ * @returns {array} [lng, lat]
++ * @example
++ * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
++ * ll.toArray(); // = [-73.9749, 40.7736]
++ */
++LngLat.prototype.toArray = function () {
++    return [this.lng, this.lat];
++};
+ 
+-    // update all zoom-dependent layout/paint values
+-    recalculate: function(zoom, zoomHistory) {
+-        for (var paintName in this._paintTransitions) {
+-            this.paint[paintName] = this.getPaintValue(paintName, {zoom: zoom, zoomHistory: zoomHistory});
+-        }
+-        for (var layoutName in this._layoutFunctions) {
+-            this.layout[layoutName] = this.getLayoutValue(layoutName, {zoom: zoom, zoomHistory: zoomHistory});
+-        }
+-    },
++/**
++ * Return a `LngLat` as a string
++ *
++ * @returns {string} "LngLat(lng, lat)"
++ * @example
++ * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
++ * ll.toString(); // = "LngLat(-73.9749, 40.7736)"
++ */
++LngLat.prototype.toString = function () {
++    return 'LngLat(' + this.lng + ', ' + this.lat + ')';
++};
+ 
+-    serialize: function(options) {
+-        var output = {
+-            'id': this.id,
+-            'ref': this.ref,
+-            'metadata': this.metadata,
+-            'minzoom': this.minzoom,
+-            'maxzoom': this.maxzoom
+-        };
++/**
++ * Convert an array to a `LngLat` object, or return an existing `LngLat` object
++ * unchanged.
++ *
++ * @param {Array<number>|LngLat} input `input` to convert
++ * @returns {LngLat} LngLat object or original input
++ * @example
++ * var arr = [-73.9749, 40.7736];
++ * var ll = mapboxgl.LngLat.convert(arr);
++ * ll;   // = LngLat {lng: -73.9749, lat: 40.7736}
++ */
++LngLat.convert = function (input) {
++    if (input instanceof LngLat) {
++        return input;
++    }
++    if (Array.isArray(input)) {
++        return new LngLat(input[0], input[1]);
++    }
++    return input;
++};
+ 
+-        for (var klass in this._paintDeclarations) {
+-            var key = klass === '' ? 'paint' : 'paint.' + klass;
+-            output[key] = util.mapObject(this._paintDeclarations[klass], getDeclarationValue);
+-        }
++},{"../util/util":362}],270:[function(require,module,exports){
++'use strict';
+ 
+-        if (!this.ref || (options && options.includeRefProperties)) {
+-            util.extend(output, {
+-                'type': this.type,
+-                'source': this.source,
+-                'source-layer': this.sourceLayer,
+-                'filter': this.filter,
+-                'layout': util.mapObject(this._layoutDeclarations, getDeclarationValue)
+-            });
+-        }
++module.exports = LngLatBounds;
+ 
+-        return util.filterObject(output, function(value, key) {
+-            return value !== undefined && !(key === 'layout' && !Object.keys(value).length);
+-        });
+-    },
++var LngLat = require('./lng_lat');
+ 
+-    // set paint transition based on a given paint declaration
+-    _applyPaintDeclaration: function (name, declaration, options, globalOptions, animationLoop) {
+-        var oldTransition = options.transition ? this._paintTransitions[name] : undefined;
++/**
++ * Creates a bounding box from the given pair of points. If parameteres are omitted, a `null` bounding box is created.
++ *
++ * @class LngLatBounds
++ * @classdesc A representation of rectangular box on the earth, defined by its southwest and northeast points in longitude and latitude.
++ * @param {LngLat} sw southwest
++ * @param {LngLat} ne northeast
++ * @example
++ * var sw = new mapboxgl.LngLat(-73.9876, 40.7661);
++ * var ne = new mapboxgl.LngLat(-73.9397, 40.8002);
++ * var llb = new mapboxgl.LngLatBounds(sw, ne);
++ */
++function LngLatBounds(sw, ne) {
++    if (!sw) {
++        return;
++    } else if (ne) {
++        this.extend(sw).extend(ne);
++    } else if (sw.length === 4) {
++        this.extend([sw[0], sw[1]]).extend([sw[2], sw[3]]);
++    } else {
++        this.extend(sw[0]).extend(sw[1]);
++    }
++}
+ 
+-        if (declaration === null || declaration === undefined) {
+-            var spec = this._paintSpecifications[name];
+-            declaration = new StyleDeclaration(spec, spec.default);
+-        }
++LngLatBounds.prototype = {
+ 
+-        if (oldTransition && oldTransition.declaration.json === declaration.json) return;
++    /**
++     * Extend the bounds to include a given LngLat or LngLatBounds.
++     *
++     * @param {LngLat|LngLatBounds} obj object to extend to
++     * @returns {LngLatBounds} `this`
++     */
++    extend: function(obj) {
++        var sw = this._sw,
++            ne = this._ne,
++            sw2, ne2;
+ 
+-        var transitionOptions = util.extend({
+-            duration: 300,
+-            delay: 0
+-        }, globalOptions, this.getPaintProperty(name + TRANSITION_SUFFIX));
++        if (obj instanceof LngLat) {
++            sw2 = obj;
++            ne2 = obj;
+ 
+-        var newTransition = this._paintTransitions[name] =
+-                new StyleTransition(declaration, oldTransition, transitionOptions);
++        } else if (obj instanceof LngLatBounds) {
++            sw2 = obj._sw;
++            ne2 = obj._ne;
++
++            if (!sw2 || !ne2) return this;
+ 
+-        if (!newTransition.instant()) {
+-            newTransition.loopID = animationLoop.set(newTransition.endTime - Date.now());
+-        }
+-        if (oldTransition) {
+-            animationLoop.cancel(oldTransition.loopID);
++        } else {
++            return obj ? this.extend(LngLat.convert(obj) || LngLatBounds.convert(obj)) : this;
+         }
+-    },
+ 
+-    // update layout value if it's constant, or mark it as zoom-dependent
+-    _updateLayoutValue: function(name) {
+-        var declaration = this._layoutDeclarations[name];
++        if (!sw && !ne) {
++            this._sw = new LngLat(sw2.lng, sw2.lat);
++            this._ne = new LngLat(ne2.lng, ne2.lat);
+ 
+-        if (declaration && declaration.isFunction) {
+-            this._layoutFunctions[name] = true;
+         } else {
+-            delete this._layoutFunctions[name];
+-            this.layout[name] = this.getLayoutValue(name);
++            sw.lng = Math.min(sw2.lng, sw.lng);
++            sw.lat = Math.min(sw2.lat, sw.lat);
++            ne.lng = Math.max(ne2.lng, ne.lng);
++            ne.lat = Math.max(ne2.lat, ne.lat);
+         }
++
++        return this;
+     },
+ 
+-    _handleErrors: function(validate, key, name, value) {
+-        return validateStyle.emitErrors(this, validate.call(validateStyle, {
+-            key: key,
+-            layerType: this.type,
+-            objectKey: name,
+-            value: value,
+-            styleSpec: styleSpec,
+-            // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407
+-            style: {glyphs: true, sprite: true}
+-        }));
+-    }
+-});
++    /**
++     * Get the point equidistant from this box's corners
++     * @returns {LngLat} centerpoint
++     * @example
++     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
++     * llb.getCenter(); // = LngLat {lng: -73.96365, lat: 40.78315}
++     */
++    getCenter: function() {
++        return new LngLat((this._sw.lng + this._ne.lng) / 2, (this._sw.lat + this._ne.lat) / 2);
++    },
+ 
+-function getDeclarationValue(declaration) {
+-    return declaration.value;
+-}
++    /**
++     * Get southwest corner
++     * @returns {LngLat} southwest
++     */
++    getSouthWest: function() { return this._sw; },
+ 
+-},{"../util/evented":341,"../util/util":349,"./parse_color":289,"./style_declaration":291,"./style_layer/background_style_layer":294,"./style_layer/circle_style_layer":295,"./style_layer/fill_style_layer":296,"./style_layer/line_style_layer":297,"./style_layer/raster_style_layer":298,"./style_layer/symbol_style_layer":299,"./style_spec":300,"./style_transition":301,"./validate_style":302}],294:[function(require,module,exports){
+-'use strict';
++    /**
++     * Get northeast corner
++     * @returns {LngLat} northeast
++     */
++    getNorthEast: function() { return this._ne; },
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++    /**
++     * Get northwest corner
++     * @returns {LngLat} northwest
++     */
++    getNorthWest: function() { return new LngLat(this.getWest(), this.getNorth()); },
+ 
+-function BackgroundStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++    /**
++     * Get southeast corner
++     * @returns {LngLat} southeast
++     */
++    getSouthEast: function() { return new LngLat(this.getEast(), this.getSouth()); },
+ 
+-module.exports = BackgroundStyleLayer;
++    /**
++     * Get west edge longitude
++     * @returns {number} west
++     */
++    getWest:  function() { return this._sw.lng; },
+ 
+-BackgroundStyleLayer.prototype = util.inherit(StyleLayer, {});
++    /**
++     * Get south edge latitude
++     * @returns {number} south
++     */
++    getSouth: function() { return this._sw.lat; },
+ 
+-},{"../../util/util":349,"../style_layer":293}],295:[function(require,module,exports){
+-'use strict';
++    /**
++     * Get east edge longitude
++     * @returns {number} east
++     */
++    getEast:  function() { return this._ne.lng; },
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++    /**
++     * Get north edge latitude
++     * @returns {number} north
++     */
++    getNorth: function() { return this._ne.lat; },
+ 
+-function CircleStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++    /**
++     * Return a `LngLatBounds` as an array
++     *
++     * @returns {array} [lng, lat]
++     * @example
++     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
++     * llb.toArray(); // = [[-73.9876, 40.7661], [-73.9397, 40.8002]]
++     */
++    toArray: function () {
++        return [this._sw.toArray(), this._ne.toArray()];
++    },
+ 
+-module.exports = CircleStyleLayer;
++    /**
++     * Return a `LngLatBounds` as a string
++     *
++     * @returns {string} "LngLatBounds(LngLat(lng, lat), LngLat(lng, lat))"
++     * @example
++     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
++     * llb.toString(); // = "LngLatBounds(LngLat(-73.9876, 40.7661), LngLat(-73.9397, 40.8002))"
++     */
++    toString: function () {
++        return 'LngLatBounds(' + this._sw.toString() + ', ' + this._ne.toString() + ')';
++    }
++};
+ 
+-CircleStyleLayer.prototype = util.inherit(StyleLayer, {});
++/**
++ * Convert an array to a `LngLatBounds` object, or return an existing
++ * `LngLatBounds` object unchanged.
++ *
++ * Calls `LngLat#convert` internally to convert arrays as `LngLat` values.
++ *
++ * @param {LngLatBounds|Array<number>|Array<Array<number>>} input input to convert to a LngLatBounds
++ * @returns {LngLatBounds} LngLatBounds object or original input
++ * @example
++ * var arr = [[-73.9876, 40.7661], [-73.9397, 40.8002]];
++ * var llb = mapboxgl.LngLatBounds.convert(arr);
++ * llb;   // = LngLatBounds {_sw: LngLat {lng: -73.9876, lat: 40.7661}, _ne: LngLat {lng: -73.9397, lat: 40.8002}}
++ */
++LngLatBounds.convert = function (input) {
++    if (!input || input instanceof LngLatBounds) return input;
++    return new LngLatBounds(input);
++};
+ 
+-},{"../../util/util":349,"../style_layer":293}],296:[function(require,module,exports){
++},{"./lng_lat":269}],271:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++var LngLat = require('./lng_lat'),
++    Point = require('point-geometry'),
++    Coordinate = require('./coordinate'),
++    wrap = require('../util/util').wrap,
++    interp = require('../util/interpolate'),
++    TileCoord = require('../source/tile_coord'),
++    EXTENT = require('../data/bucket').EXTENT,
++    glmatrix = require('gl-matrix');
+ 
+-function FillStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++var vec4 = glmatrix.vec4,
++    mat4 = glmatrix.mat4,
++    mat2 = glmatrix.mat2;
+ 
+-module.exports = FillStyleLayer;
++module.exports = Transform;
+ 
+-FillStyleLayer.prototype = util.inherit(StyleLayer, {});
++/**
++ * A single transform, generally used for a single tile to be
++ * scaled, rotated, and zoomed.
++ *
++ * @param {number} minZoom
++ * @param {number} maxZoom
++ * @private
++ */
++function Transform(minZoom, maxZoom) {
++    this.tileSize = 512; // constant
+ 
+-},{"../../util/util":349,"../style_layer":293}],297:[function(require,module,exports){
+-'use strict';
++    this._minZoom = minZoom || 0;
++    this._maxZoom = maxZoom || 22;
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++    this.latRange = [-85.05113, 85.05113];
+ 
+-function LineStyleLayer() {
+-    StyleLayer.apply(this, arguments);
++    this.width = 0;
++    this.height = 0;
++    this._center = new LngLat(0, 0);
++    this.zoom = 0;
++    this.angle = 0;
++    this._altitude = 1.5;
++    this._pitch = 0;
++    this._unmodified = true;
+ }
+ 
+-module.exports = LineStyleLayer;
+-
+-LineStyleLayer.prototype = util.inherit(StyleLayer, {
+-
+-    getPaintValue: function(name, globalProperties, featureProperties) {
+-        var value = StyleLayer.prototype.getPaintValue.apply(this, arguments);
+-
+-        // If the line is dashed, scale the dash lengths by the line
+-        // width at the previous round zoom level.
+-        if (value && name === 'line-dasharray') {
+-            var flooredZoom = Math.floor(globalProperties.zoom);
+-            if (this._flooredZoom !== flooredZoom) {
+-                this._flooredZoom = flooredZoom;
+-                this._flooredLineWidth = this.getPaintValue('line-width', globalProperties, featureProperties);
+-            }
+-
+-            value.fromScale *= this._flooredLineWidth;
+-            value.toScale *= this._flooredLineWidth;
+-        }
+-
+-        return value;
+-    }
+-});
+-
+-},{"../../util/util":349,"../style_layer":293}],298:[function(require,module,exports){
+-'use strict';
++Transform.prototype = {
++    get minZoom() { return this._minZoom; },
++    set minZoom(zoom) {
++        if (this._minZoom === zoom) return;
++        this._minZoom = zoom;
++        this.zoom = Math.max(this.zoom, zoom);
++    },
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++    get maxZoom() { return this._maxZoom; },
++    set maxZoom(zoom) {
++        if (this._maxZoom === zoom) return;
++        this._maxZoom = zoom;
++        this.zoom = Math.min(this.zoom, zoom);
++    },
+ 
+-function RasterStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++    get worldSize() {
++        return this.tileSize * this.scale;
++    },
+ 
+-module.exports = RasterStyleLayer;
++    get centerPoint() {
++        return this.size._div(2);
++    },
+ 
+-RasterStyleLayer.prototype = util.inherit(StyleLayer, {});
++    get size() {
++        return new Point(this.width, this.height);
++    },
+ 
+-},{"../../util/util":349,"../style_layer":293}],299:[function(require,module,exports){
+-'use strict';
++    get bearing() {
++        return -this.angle / Math.PI * 180;
++    },
++    set bearing(bearing) {
++        var b = -wrap(bearing, -180, 180) * Math.PI / 180;
++        if (this.angle === b) return;
++        this._unmodified = false;
++        this.angle = b;
++        this._calcProjMatrix();
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++        // 2x2 matrix for rotating points
++        this.rotationMatrix = mat2.create();
++        mat2.rotate(this.rotationMatrix, this.rotationMatrix, this.angle);
++    },
+ 
+-function SymbolStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++    get pitch() {
++        return this._pitch / Math.PI * 180;
++    },
++    set pitch(pitch) {
++        var p = Math.min(60, pitch) / 180 * Math.PI;
++        if (this._pitch === p) return;
++        this._unmodified = false;
++        this._pitch = p;
++        this._calcProjMatrix();
++    },
+ 
+-module.exports = SymbolStyleLayer;
++    get altitude() {
++        return this._altitude;
++    },
++    set altitude(altitude) {
++        var a = Math.max(0.75, altitude);
++        if (this._altitude === a) return;
++        this._unmodified = false;
++        this._altitude = a;
++        this._calcProjMatrix();
++    },
+ 
+-SymbolStyleLayer.prototype = util.inherit(StyleLayer, {
++    get zoom() { return this._zoom; },
++    set zoom(zoom) {
++        var z = Math.min(Math.max(zoom, this.minZoom), this.maxZoom);
++        if (this._zoom === z) return;
++        this._unmodified = false;
++        this._zoom = z;
++        this.scale = this.zoomScale(z);
++        this.tileZoom = Math.floor(z);
++        this.zoomFraction = z - this.tileZoom;
++        this._calcProjMatrix();
++        this._constrain();
++    },
+ 
+-    isHidden: function() {
+-        if (StyleLayer.prototype.isHidden.apply(this, arguments)) return true;
++    get center() { return this._center; },
++    set center(center) {
++        if (center.lat === this._center.lat && center.lng === this._center.lng) return;
++        this._unmodified = false;
++        this._center = center;
++        this._calcProjMatrix();
++        this._constrain();
++    },
+ 
+-        var isTextHidden = this.paint['text-opacity'] === 0 || !this.layout['text-field'];
+-        var isIconHidden = this.paint['icon-opacity'] === 0 || !this.layout['icon-image'];
+-        if (isTextHidden && isIconHidden) return true;
++    resize: function(width, height) {
++        this.width = width;
++        this.height = height;
+ 
+-        return false;
++        this.pixelsToGLUnits = [2 / width, -2 / height];
++        this._calcProjMatrix();
++        this._constrain();
+     },
+ 
+-    getLayoutValue: function(name, globalProperties, featureProperties) {
+-        if (name === 'text-rotation-alignment' &&
+-                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
+-                !this.getLayoutProperty('text-rotation-alignment')) {
+-            return 'map';
+-        } else if (name === 'icon-rotation-alignment' &&
+-                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
+-                !this.getLayoutProperty('icon-rotation-alignment')) {
+-            return 'map';
+-        } else {
+-            return StyleLayer.prototype.getLayoutValue.apply(this, arguments);
+-        }
+-    }
+-
+-});
++    get unmodified() { return this._unmodified; },
+ 
+-},{"../../util/util":349,"../style_layer":293}],300:[function(require,module,exports){
+-'use strict';
++    zoomScale: function(zoom) { return Math.pow(2, zoom); },
++    scaleZoom: function(scale) { return Math.log(scale) / Math.LN2; },
+ 
+-module.exports = require('mapbox-gl-style-spec/reference/latest');
++    project: function(lnglat, worldSize) {
++        return new Point(
++            this.lngX(lnglat.lng, worldSize),
++            this.latY(lnglat.lat, worldSize));
++    },
+ 
+-},{"mapbox-gl-style-spec/reference/latest":397}],301:[function(require,module,exports){
+-'use strict';
++    unproject: function(point, worldSize) {
++        return new LngLat(
++            this.xLng(point.x, worldSize),
++            this.yLat(point.y, worldSize));
++    },
+ 
+-var util = require('../util/util');
+-var interpolate = require('../util/interpolate');
++    get x() { return this.lngX(this.center.lng); },
++    get y() { return this.latY(this.center.lat); },
+ 
+-module.exports = StyleTransition;
++    get point() { return new Point(this.x, this.y); },
+ 
+-/*
+- * Represents a transition between two declarations
+- */
+-function StyleTransition(declaration, oldTransition, value) {
++    /**
++     * latitude to absolute x coord
++     * @param {number} lon
++     * @param {number} [worldSize=this.worldSize]
++     * @returns {number} pixel coordinate
++     * @private
++     */
++    lngX: function(lng, worldSize) {
++        return (180 + lng) * (worldSize || this.worldSize) / 360;
++    },
++    /**
++     * latitude to absolute y coord
++     * @param {number} lat
++     * @param {number} [worldSize=this.worldSize]
++     * @returns {number} pixel coordinate
++     * @private
++     */
++    latY: function(lat, worldSize) {
++        var y = 180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360));
++        return (180 - y) * (worldSize || this.worldSize) / 360;
++    },
+ 
+-    this.declaration = declaration;
+-    this.startTime = this.endTime = (new Date()).getTime();
++    xLng: function(x, worldSize) {
++        return x * 360 / (worldSize || this.worldSize) - 180;
++    },
++    yLat: function(y, worldSize) {
++        var y2 = 180 - y * 360 / (worldSize || this.worldSize);
++        return 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90;
++    },
+ 
+-    var type = declaration.type;
+-    if ((type === 'string' || type === 'array') && declaration.transitionable) {
+-        this.interp = interpZoomTransitioned;
+-    } else {
+-        this.interp = interpolate[type];
+-    }
++    panBy: function(offset) {
++        var point = this.centerPoint._add(offset);
++        this.center = this.pointLocation(point);
++    },
+ 
+-    this.oldTransition = oldTransition;
+-    this.duration = value.duration || 0;
+-    this.delay = value.delay || 0;
++    setLocationAtPoint: function(lnglat, point) {
++        var c = this.locationCoordinate(lnglat);
++        var coordAtPoint = this.pointCoordinate(point);
++        var coordCenter = this.pointCoordinate(this.centerPoint);
++        var translate = coordAtPoint._sub(c);
++        this._unmodified = false;
++        this.center = this.coordinateLocation(coordCenter._sub(translate));
++    },
+ 
+-    if (!this.instant()) {
+-        this.endTime = this.startTime + this.duration + this.delay;
+-        this.ease = util.easeCubicInOut;
+-    }
++    /**
++     * Given a location, return the screen point that corresponds to it
++     * @param {LngLat} lnglat location
++     * @returns {Point} screen point
++     * @private
++     */
++    locationPoint: function(lnglat) {
++        return this.coordinatePoint(this.locationCoordinate(lnglat));
++    },
+ 
+-    if (oldTransition && oldTransition.endTime <= this.startTime) {
+-        // Old transition is done running, so we can
+-        // delete its reference to its old transition.
++    /**
++     * Given a point on screen, return its lnglat
++     * @param {Point} p screen point
++     * @returns {LngLat} lnglat location
++     * @private
++     */
++    pointLocation: function(p) {
++        return this.coordinateLocation(this.pointCoordinate(p));
++    },
+ 
+-        delete oldTransition.oldTransition;
+-    }
+-}
++    /**
++     * Given a geographical lnglat, return an unrounded
++     * coordinate that represents it at this transform's zoom level and
++     * worldsize.
++     * @param {LngLat} lnglat
++     * @returns {Coordinate}
++     * @private
++     */
++    locationCoordinate: function(lnglat) {
++        var k = this.zoomScale(this.tileZoom) / this.worldSize,
++            ll = LngLat.convert(lnglat);
+ 
+-StyleTransition.prototype.instant = function() {
+-    return !this.oldTransition || !this.interp || (this.duration === 0 && this.delay === 0);
+-};
++        return new Coordinate(
++            this.lngX(ll.lng) * k,
++            this.latY(ll.lat) * k,
++            this.tileZoom);
++    },
+ 
+-/*
+- * Return the value of the transitioning property at zoom level `z` and optional time `t`
+- */
+-StyleTransition.prototype.calculate = function(globalProperties, featureProperties) {
+-    var value = this.declaration.calculate(
+-        util.extend({}, globalProperties, {duration: this.duration}),
+-        featureProperties
+-    );
++    /**
++     * Given a Coordinate, return its geographical position.
++     * @param {Coordinate} coord
++     * @returns {LngLat} lnglat
++     * @private
++     */
++    coordinateLocation: function(coord) {
++        var worldSize = this.zoomScale(coord.zoom);
++        return new LngLat(
++            this.xLng(coord.column, worldSize),
++            this.yLat(coord.row, worldSize));
++    },
+ 
+-    if (this.instant()) return value;
++    pointCoordinate: function(p) {
+ 
+-    var t = globalProperties.time || Date.now();
++        var targetZ = 0;
+ 
+-    if (t < this.endTime) {
+-        var oldValue = this.oldTransition.calculate(
+-            util.extend({}, globalProperties, {time: this.startTime}),
+-            featureProperties
+-        );
+-        var eased = this.ease((t - this.startTime - this.delay) / this.duration);
+-        value = this.interp(oldValue, value, eased);
+-    }
++        var matrix = this.coordinatePointMatrix(this.tileZoom);
++        mat4.invert(matrix, matrix);
+ 
+-    return value;
++        if (!matrix) throw new Error("failed to invert matrix");
+ 
+-};
++        // since we don't know the correct projected z value for the point,
++        // unproject two points to get a line and then find the point on that
++        // line with z=0
+ 
+-function interpZoomTransitioned(from, to, t) {
+-    return {
+-        from: from.to,
+-        fromScale: from.toScale,
+-        to: to.to,
+-        toScale: to.toScale,
+-        t: t
+-    };
+-}
++        var coord0 = [p.x, p.y, 0, 1];
++        var coord1 = [p.x, p.y, 1, 1];
+ 
+-},{"../util/interpolate":343,"../util/util":349}],302:[function(require,module,exports){
+-'use strict';
++        vec4.transformMat4(coord0, coord0, matrix);
++        vec4.transformMat4(coord1, coord1, matrix);
+ 
+-module.exports = require('mapbox-gl-style-spec/lib/validate_style.min');
++        var w0 = coord0[3];
++        var w1 = coord1[3];
++        var x0 = coord0[0] / w0;
++        var x1 = coord1[0] / w1;
++        var y0 = coord0[1] / w0;
++        var y1 = coord1[1] / w1;
++        var z0 = coord0[2] / w0;
++        var z1 = coord1[2] / w1;
+ 
+-module.exports.emitErrors = function throwErrors(emitter, errors) {
+-    if (errors && errors.length) {
+-        for (var i = 0; i < errors.length; i++) {
+-            emitter.fire('error', { error: new Error(errors[i].message) });
+-        }
+-        return true;
+-    } else {
+-        return false;
+-    }
+-};
+ 
+-module.exports.throwErrors = function throwErrors(emitter, errors) {
+-    if (errors) {
+-        for (var i = 0; i < errors.length; i++) {
+-            throw new Error(errors[i].message);
+-        }
+-    }
+-};
++        var t = z0 === z1 ? 0 : (targetZ - z0) / (z1 - z0);
+ 
+-},{"mapbox-gl-style-spec/lib/validate_style.min":396}],303:[function(require,module,exports){
+-'use strict';
++        return new Coordinate(
++            interp(x0, x1, t),
++            interp(y0, y1, t),
++            this.tileZoom);
++    },
+ 
+-var Point = require('point-geometry');
++    /**
++     * Given a coordinate, return the screen point that corresponds to it
++     * @param {Coordinate} coord
++     * @returns {Point} screen point
++     * @private
++     */
++    coordinatePoint: function(coord) {
++        var matrix = this.coordinatePointMatrix(coord.zoom);
++        var p = [coord.column, coord.row, 0, 1];
++        vec4.transformMat4(p, p, matrix);
++        return new Point(p[0] / p[3], p[1] / p[3]);
++    },
+ 
+-module.exports = Anchor;
++    coordinatePointMatrix: function(z) {
++        var proj = mat4.copy(new Float64Array(16), this.projMatrix);
++        var scale = this.worldSize / this.zoomScale(z);
++        mat4.scale(proj, proj, [scale, scale, 1]);
++        mat4.multiply(proj, this.getPixelMatrix(), proj);
++        return proj;
++    },
+ 
+-function Anchor(x, y, angle, segment) {
+-    this.x = x;
+-    this.y = y;
+-    this.angle = angle;
++    /**
++     * converts gl coordinates -1..1 to pixels 0..width
++     * @returns {Object} matrix
++     * @private
++     */
++    getPixelMatrix: function() {
++        var m = mat4.create();
++        mat4.scale(m, m, [this.width / 2, -this.height / 2, 1]);
++        mat4.translate(m, m, [1, -1, 0]);
++        return m;
++    },
+ 
+-    if (segment !== undefined) {
+-        this.segment = segment;
+-    }
+-}
++    /**
++     * Calculate the posMatrix that, given a tile coordinate, would be used to display the tile on a map.
++     * @param {TileCoord|Coordinate} coord
++     * @param {Number} maxZoom maximum source zoom to account for overscaling
++     * @private
++     */
++    calculatePosMatrix: function(coord, maxZoom) {
++        if (maxZoom === undefined) maxZoom = Infinity;
++        if (coord instanceof TileCoord) coord = coord.toCoordinate(maxZoom);
+ 
+-Anchor.prototype = Object.create(Point.prototype);
++        // Initialize model-view matrix that converts from the tile coordinates to screen coordinates.
+ 
+-Anchor.prototype.clone = function() {
+-    return new Anchor(this.x, this.y, this.angle, this.segment);
+-};
++        // if z > maxzoom then the tile is actually a overscaled maxzoom tile,
++        // so calculate the matrix the maxzoom tile would use.
++        var z = Math.min(coord.zoom, maxZoom);
+ 
+-},{"point-geometry":404}],304:[function(require,module,exports){
+-'use strict';
++        var scale = this.worldSize / Math.pow(2, z);
++        var posMatrix = new Float64Array(16);
+ 
+-module.exports = checkMaxAngle;
++        mat4.identity(posMatrix);
++        mat4.translate(posMatrix, posMatrix, [coord.column * scale, coord.row * scale, 0]);
++        mat4.scale(posMatrix, posMatrix, [ scale / EXTENT, scale / EXTENT, 1 ]);
++        mat4.multiply(posMatrix, this.projMatrix, posMatrix);
+ 
+-/**
+- * Labels placed around really sharp angles aren't readable. Check if any
+- * part of the potential label has a combined angle that is too big.
+- *
+- * @param {Array<Point>} line
+- * @param {Anchor} anchor The point on the line around which the label is anchored.
+- * @param {number} labelLength The length of the label in geometry units.
+- * @param {number} windowSize The check fails if the combined angles within a part of the line that is `windowSize` long is too big.
+- * @param {number} maxAngle The maximum combined angle that any window along the label is allowed to have.
+- *
+- * @returns {boolean} whether the label should be placed
+- * @private
+- */
+-function checkMaxAngle(line, anchor, labelLength, windowSize, maxAngle) {
++        return new Float32Array(posMatrix);
++    },
+ 
+-    // horizontal labels always pass
+-    if (anchor.segment === undefined) return true;
++    _constrain: function() {
++        if (!this.center || !this.width || !this.height || this._constraining) return;
+ 
+-    var p = anchor;
+-    var index = anchor.segment + 1;
+-    var anchorDistance = 0;
++        this._constraining = true;
+ 
+-    // move backwards along the line to the first segment the label appears on
+-    while (anchorDistance > -labelLength / 2) {
+-        index--;
++        var minY, maxY, minX, maxX, sy, sx, x2, y2,
++            size = this.size,
++            unmodified = this._unmodified;
+ 
+-        // there isn't enough room for the label after the beginning of the line
+-        if (index < 0) return false;
++        if (this.latRange) {
++            minY = this.latY(this.latRange[1]);
++            maxY = this.latY(this.latRange[0]);
++            sy = maxY - minY < size.y ? size.y / (maxY - minY) : 0;
++        }
+ 
+-        anchorDistance -= line[index].dist(p);
+-        p = line[index];
+-    }
++        if (this.lngRange) {
++            minX = this.lngX(this.lngRange[0]);
++            maxX = this.lngX(this.lngRange[1]);
++            sx = maxX - minX < size.x ? size.x / (maxX - minX) : 0;
++        }
+ 
+-    anchorDistance += line[index].dist(line[index + 1]);
+-    index++;
++        // how much the map should scale to fit the screen into given latitude/longitude ranges
++        var s = Math.max(sx || 0, sy || 0);
+ 
+-    // store recent corners and their total angle difference
+-    var recentCorners = [];
+-    var recentAngleDelta = 0;
++        if (s) {
++            this.center = this.unproject(new Point(
++                sx ? (maxX + minX) / 2 : this.x,
++                sy ? (maxY + minY) / 2 : this.y));
++            this.zoom += this.scaleZoom(s);
++            this._unmodified = unmodified;
++            this._constraining = false;
++            return;
++        }
+ 
+-    // move forwards by the length of the label and check angles along the way
+-    while (anchorDistance < labelLength / 2) {
+-        var prev = line[index - 1];
+-        var current = line[index];
+-        var next = line[index + 1];
++        if (this.latRange) {
++            var y = this.y,
++                h2 = size.y / 2;
+ 
+-        // there isn't enough room for the label before the end of the line
+-        if (!next) return false;
++            if (y - h2 < minY) y2 = minY + h2;
++            if (y + h2 > maxY) y2 = maxY - h2;
++        }
+ 
+-        var angleDelta = prev.angleTo(current) - current.angleTo(next);
+-        // restrict angle to -pi..pi range
+-        angleDelta = Math.abs(((angleDelta + 3 * Math.PI) % (Math.PI * 2)) - Math.PI);
++        if (this.lngRange) {
++            var x = this.x,
++                w2 = size.x / 2;
+ 
+-        recentCorners.push({
+-            distance: anchorDistance,
+-            angleDelta: angleDelta
+-        });
+-        recentAngleDelta += angleDelta;
++            if (x - w2 < minX) x2 = minX + w2;
++            if (x + w2 > maxX) x2 = maxX - w2;
++        }
+ 
+-        // remove corners that are far enough away from the list of recent anchors
+-        while (anchorDistance - recentCorners[0].distance > windowSize) {
+-            recentAngleDelta -= recentCorners.shift().angleDelta;
++        // pan the map if the screen goes off the range
++        if (x2 !== undefined || y2 !== undefined) {
++            this.center = this.unproject(new Point(
++                x2 !== undefined ? x2 : this.x,
++                y2 !== undefined ? y2 : this.y));
+         }
+ 
+-        // the sum of angles within the window area exceeds the maximum allowed value. check fails.
+-        if (recentAngleDelta > maxAngle) return false;
++        this._unmodified = unmodified;
++        this._constraining = false;
++    },
+ 
+-        index++;
+-        anchorDistance += current.dist(next);
+-    }
++    _calcProjMatrix: function() {
++        var m = new Float64Array(16);
+ 
+-    // no part of the line had an angle greater than the maximum allowed. check passes.
+-    return true;
+-}
++        // Find the distance from the center point to the center top in altitude units using law of sines.
++        var halfFov = Math.atan(0.5 / this.altitude);
++        var topHalfSurfaceDistance = Math.sin(halfFov) * this.altitude / Math.sin(Math.PI / 2 - this._pitch - halfFov);
+ 
+-},{}],305:[function(require,module,exports){
+-'use strict';
++        // Calculate z value of the farthest fragment that should be rendered.
++        var farZ = Math.cos(Math.PI / 2 - this._pitch) * topHalfSurfaceDistance + this.altitude;
+ 
+-var Point = require('point-geometry');
++        mat4.perspective(m, 2 * Math.atan((this.height / 2) / this.altitude), this.width / this.height, 0.1, farZ);
+ 
+-module.exports = clipLine;
++        mat4.translate(m, m, [0, 0, -this.altitude]);
+ 
+-/**
+- * Returns the part of a multiline that intersects with the provided rectangular box.
+- *
+- * @param {Array<Array<Point>>} lines
+- * @param {number} x1 the left edge of the box
+- * @param {number} y1 the top edge of the box
+- * @param {number} x2 the right edge of the box
+- * @param {number} y2 the bottom edge of the box
+- * @returns {Array<Array<Point>>} lines
+- * @private
+- */
+-function clipLine(lines, x1, y1, x2, y2) {
+-    var clippedLines = [];
++        // After the rotateX, z values are in pixel units. Convert them to
++        // altitude units. 1 altitude unit = the screen height.
++        mat4.scale(m, m, [1, -1, 1 / this.height]);
+ 
+-    for (var l = 0; l < lines.length; l++) {
+-        var line = lines[l];
+-        var clippedLine;
++        mat4.rotateX(m, m, this._pitch);
++        mat4.rotateZ(m, m, this.angle);
++        mat4.translate(m, m, [-this.x, -this.y, 0]);
+ 
+-        for (var i = 0; i < line.length - 1; i++) {
+-            var p0 = line[i];
+-            var p1 = line[i + 1];
++        this.projMatrix = m;
++    }
++};
+ 
++},{"../data/bucket":260,"../source/tile_coord":294,"../util/interpolate":356,"../util/util":362,"./coordinate":268,"./lng_lat":269,"gl-matrix":154,"point-geometry":400}],272:[function(require,module,exports){
++'use strict';
+ 
+-            if (p0.x < x1 && p1.x < x1) {
+-                continue;
+-            } else if (p0.x < x1) {
+-                p0 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
+-            } else if (p1.x < x1) {
+-                p1 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
+-            }
++// Font data From Hershey Simplex Font
++// http://paulbourke.net/dataformats/hershey/
++var simplexFont = {
++    " ": [16, []],
++    "!": [10, [5, 21, 5, 7, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
++    "\"": [16, [4, 21, 4, 14, -1, -1, 12, 21, 12, 14]],
++    "#": [21, [11, 25, 4, -7, -1, -1, 17, 25, 10, -7, -1, -1, 4, 12, 18, 12, -1, -1, 3, 6, 17, 6]],
++    "$": [20, [8, 25, 8, -4, -1, -1, 12, 25, 12, -4, -1, -1, 17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
++    "%": [24, [21, 21, 3, 0, -1, -1, 8, 21, 10, 19, 10, 17, 9, 15, 7, 14, 5, 14, 3, 16, 3, 18, 4, 20, 6, 21, 8, 21, 10, 20, 13, 19, 16, 19, 19, 20, 21, 21, -1, -1, 17, 7, 15, 6, 14, 4, 14, 2, 16, 0, 18, 0, 20, 1, 21, 3, 21, 5, 19, 7, 17, 7]],
++    "&": [26, [23, 12, 23, 13, 22, 14, 21, 14, 20, 13, 19, 11, 17, 6, 15, 3, 13, 1, 11, 0, 7, 0, 5, 1, 4, 2, 3, 4, 3, 6, 4, 8, 5, 9, 12, 13, 13, 14, 14, 16, 14, 18, 13, 20, 11, 21, 9, 20, 8, 18, 8, 16, 9, 13, 11, 10, 16, 3, 18, 1, 20, 0, 22, 0, 23, 1, 23, 2]],
++    "'": [10, [5, 19, 4, 20, 5, 21, 6, 20, 6, 18, 5, 16, 4, 15]],
++    "(": [14, [11, 25, 9, 23, 7, 20, 5, 16, 4, 11, 4, 7, 5, 2, 7, -2, 9, -5, 11, -7]],
++    ")": [14, [3, 25, 5, 23, 7, 20, 9, 16, 10, 11, 10, 7, 9, 2, 7, -2, 5, -5, 3, -7]],
++    "*": [16, [8, 21, 8, 9, -1, -1, 3, 18, 13, 12, -1, -1, 13, 18, 3, 12]],
++    "+": [26, [13, 18, 13, 0, -1, -1, 4, 9, 22, 9]],
++    ",": [10, [6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
++    "-": [26, [4, 9, 22, 9]],
++    ".": [10, [5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
++    "/": [22, [20, 25, 2, -7]],
++    "0": [20, [9, 21, 6, 20, 4, 17, 3, 12, 3, 9, 4, 4, 6, 1, 9, 0, 11, 0, 14, 1, 16, 4, 17, 9, 17, 12, 16, 17, 14, 20, 11, 21, 9, 21]],
++    "1": [20, [6, 17, 8, 18, 11, 21, 11, 0]],
++    "2": [20, [4, 16, 4, 17, 5, 19, 6, 20, 8, 21, 12, 21, 14, 20, 15, 19, 16, 17, 16, 15, 15, 13, 13, 10, 3, 0, 17, 0]],
++    "3": [20, [5, 21, 16, 21, 10, 13, 13, 13, 15, 12, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
++    "4": [20, [13, 21, 3, 7, 18, 7, -1, -1, 13, 21, 13, 0]],
++    "5": [20, [15, 21, 5, 21, 4, 12, 5, 13, 8, 14, 11, 14, 14, 13, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
++    "6": [20, [16, 18, 15, 20, 12, 21, 10, 21, 7, 20, 5, 17, 4, 12, 4, 7, 5, 3, 7, 1, 10, 0, 11, 0, 14, 1, 16, 3, 17, 6, 17, 7, 16, 10, 14, 12, 11, 13, 10, 13, 7, 12, 5, 10, 4, 7]],
++    "7": [20, [17, 21, 7, 0, -1, -1, 3, 21, 17, 21]],
++    "8": [20, [8, 21, 5, 20, 4, 18, 4, 16, 5, 14, 7, 13, 11, 12, 14, 11, 16, 9, 17, 7, 17, 4, 16, 2, 15, 1, 12, 0, 8, 0, 5, 1, 4, 2, 3, 4, 3, 7, 4, 9, 6, 11, 9, 12, 13, 13, 15, 14, 16, 16, 16, 18, 15, 20, 12, 21, 8, 21]],
++    "9": [20, [16, 14, 15, 11, 13, 9, 10, 8, 9, 8, 6, 9, 4, 11, 3, 14, 3, 15, 4, 18, 6, 20, 9, 21, 10, 21, 13, 20, 15, 18, 16, 14, 16, 9, 15, 4, 13, 1, 10, 0, 8, 0, 5, 1, 4, 3]],
++    ":": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
++    ";": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
++    "<": [24, [20, 18, 4, 9, 20, 0]],
++    "=": [26, [4, 12, 22, 12, -1, -1, 4, 6, 22, 6]],
++    ">": [24, [4, 18, 20, 9, 4, 0]],
++    "?": [18, [3, 16, 3, 17, 4, 19, 5, 20, 7, 21, 11, 21, 13, 20, 14, 19, 15, 17, 15, 15, 14, 13, 13, 12, 9, 10, 9, 7, -1, -1, 9, 2, 8, 1, 9, 0, 10, 1, 9, 2]],
++    "@": [27, [18, 13, 17, 15, 15, 16, 12, 16, 10, 15, 9, 14, 8, 11, 8, 8, 9, 6, 11, 5, 14, 5, 16, 6, 17, 8, -1, -1, 12, 16, 10, 14, 9, 11, 9, 8, 10, 6, 11, 5, -1, -1, 18, 16, 17, 8, 17, 6, 19, 5, 21, 5, 23, 7, 24, 10, 24, 12, 23, 15, 22, 17, 20, 19, 18, 20, 15, 21, 12, 21, 9, 20, 7, 19, 5, 17, 4, 15, 3, 12, 3, 9, 4, 6, 5, 4, 7, 2, 9, 1, 12, 0, 15, 0, 18, 1, 20, 2, 21, 3, -1, -1, 19, 16, 18, 8, 18, 6, 19, 5]],
++    "A": [18, [9, 21, 1, 0, -1, -1, 9, 21, 17, 0, -1, -1, 4, 7, 14, 7]],
++    "B": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, -1, -1, 4, 11, 13, 11, 16, 10, 17, 9, 18, 7, 18, 4, 17, 2, 16, 1, 13, 0, 4, 0]],
++    "C": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5]],
++    "D": [21, [4, 21, 4, 0, -1, -1, 4, 21, 11, 21, 14, 20, 16, 18, 17, 16, 18, 13, 18, 8, 17, 5, 16, 3, 14, 1, 11, 0, 4, 0]],
++    "E": [19, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11, -1, -1, 4, 0, 17, 0]],
++    "F": [18, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11]],
++    "G": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 18, 8, -1, -1, 13, 8, 18, 8]],
++    "H": [22, [4, 21, 4, 0, -1, -1, 18, 21, 18, 0, -1, -1, 4, 11, 18, 11]],
++    "I": [8, [4, 21, 4, 0]],
++    "J": [16, [12, 21, 12, 5, 11, 2, 10, 1, 8, 0, 6, 0, 4, 1, 3, 2, 2, 5, 2, 7]],
++    "K": [21, [4, 21, 4, 0, -1, -1, 18, 21, 4, 7, -1, -1, 9, 12, 18, 0]],
++    "L": [17, [4, 21, 4, 0, -1, -1, 4, 0, 16, 0]],
++    "M": [24, [4, 21, 4, 0, -1, -1, 4, 21, 12, 0, -1, -1, 20, 21, 12, 0, -1, -1, 20, 21, 20, 0]],
++    "N": [22, [4, 21, 4, 0, -1, -1, 4, 21, 18, 0, -1, -1, 18, 21, 18, 0]],
++    "O": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21]],
++    "P": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 14, 17, 12, 16, 11, 13, 10, 4, 10]],
++    "Q": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21, -1, -1, 12, 4, 18, -2]],
++    "R": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, 4, 11, -1, -1, 11, 11, 18, 0]],
++    "S": [20, [17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
++    "T": [16, [8, 21, 8, 0, -1, -1, 1, 21, 15, 21]],
++    "U": [22, [4, 21, 4, 6, 5, 3, 7, 1, 10, 0, 12, 0, 15, 1, 17, 3, 18, 6, 18, 21]],
++    "V": [18, [1, 21, 9, 0, -1, -1, 17, 21, 9, 0]],
++    "W": [24, [2, 21, 7, 0, -1, -1, 12, 21, 7, 0, -1, -1, 12, 21, 17, 0, -1, -1, 22, 21, 17, 0]],
++    "X": [20, [3, 21, 17, 0, -1, -1, 17, 21, 3, 0]],
++    "Y": [18, [1, 21, 9, 11, 9, 0, -1, -1, 17, 21, 9, 11]],
++    "Z": [20, [17, 21, 3, 0, -1, -1, 3, 21, 17, 21, -1, -1, 3, 0, 17, 0]],
++    "[": [14, [4, 25, 4, -7, -1, -1, 5, 25, 5, -7, -1, -1, 4, 25, 11, 25, -1, -1, 4, -7, 11, -7]],
++    "\\": [14, [0, 21, 14, -3]],
++    "]": [14, [9, 25, 9, -7, -1, -1, 10, 25, 10, -7, -1, -1, 3, 25, 10, 25, -1, -1, 3, -7, 10, -7]],
++    "^": [16, [6, 15, 8, 18, 10, 15, -1, -1, 3, 12, 8, 17, 13, 12, -1, -1, 8, 17, 8, 0]],
++    "_": [16, [0, -2, 16, -2]],
++    "`": [10, [6, 21, 5, 20, 4, 18, 4, 16, 5, 15, 6, 16, 5, 17]],
++    "a": [19, [15, 14, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "b": [19, [4, 21, 4, 0, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
++    "c": [18, [15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "d": [19, [15, 21, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "e": [18, [3, 8, 15, 8, 15, 10, 14, 12, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "f": [12, [10, 21, 8, 21, 6, 20, 5, 17, 5, 0, -1, -1, 2, 14, 9, 14]],
++    "g": [19, [15, 14, 15, -2, 14, -5, 13, -6, 11, -7, 8, -7, 6, -6, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "h": [19, [4, 21, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
++    "i": [8, [3, 21, 4, 20, 5, 21, 4, 22, 3, 21, -1, -1, 4, 14, 4, 0]],
++    "j": [10, [5, 21, 6, 20, 7, 21, 6, 22, 5, 21, -1, -1, 6, 14, 6, -3, 5, -6, 3, -7, 1, -7]],
++    "k": [17, [4, 21, 4, 0, -1, -1, 14, 14, 4, 4, -1, -1, 8, 8, 15, 0]],
++    "l": [8, [4, 21, 4, 0]],
++    "m": [30, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0, -1, -1, 15, 10, 18, 13, 20, 14, 23, 14, 25, 13, 26, 10, 26, 0]],
++    "n": [19, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
++    "o": [19, [8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3, 16, 6, 16, 8, 15, 11, 13, 13, 11, 14, 8, 14]],
++    "p": [19, [4, 14, 4, -7, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
++    "q": [19, [15, 14, 15, -7, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "r": [13, [4, 14, 4, 0, -1, -1, 4, 8, 5, 11, 7, 13, 9, 14, 12, 14]],
++    "s": [17, [14, 11, 13, 13, 10, 14, 7, 14, 4, 13, 3, 11, 4, 9, 6, 8, 11, 7, 13, 6, 14, 4, 14, 3, 13, 1, 10, 0, 7, 0, 4, 1, 3, 3]],
++    "t": [12, [5, 21, 5, 4, 6, 1, 8, 0, 10, 0, -1, -1, 2, 14, 9, 14]],
++    "u": [19, [4, 14, 4, 4, 5, 1, 7, 0, 10, 0, 12, 1, 15, 4, -1, -1, 15, 14, 15, 0]],
++    "v": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0]],
++    "w": [22, [3, 14, 7, 0, -1, -1, 11, 14, 7, 0, -1, -1, 11, 14, 15, 0, -1, -1, 19, 14, 15, 0]],
++    "x": [17, [3, 14, 14, 0, -1, -1, 14, 14, 3, 0]],
++    "y": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0, 6, -4, 4, -6, 2, -7, 1, -7]],
++    "z": [17, [14, 14, 3, 0, -1, -1, 3, 14, 14, 14, -1, -1, 3, 0, 14, 0]],
++    "{": [14, [9, 25, 7, 24, 6, 23, 5, 21, 5, 19, 6, 17, 7, 16, 8, 14, 8, 12, 6, 10, -1, -1, 7, 24, 6, 22, 6, 20, 7, 18, 8, 17, 9, 15, 9, 13, 8, 11, 4, 9, 8, 7, 9, 5, 9, 3, 8, 1, 7, 0, 6, -2, 6, -4, 7, -6, -1, -1, 6, 8, 8, 6, 8, 4, 7, 2, 6, 1, 5, -1, 5, -3, 6, -5, 7, -6, 9, -7]],
++    "|": [8, [4, 25, 4, -7]],
++    "}": [14, [5, 25, 7, 24, 8, 23, 9, 21, 9, 19, 8, 17, 7, 16, 6, 14, 6, 12, 8, 10, -1, -1, 7, 24, 8, 22, 8, 20, 7, 18, 6, 17, 5, 15, 5, 13, 6, 11, 10, 9, 6, 7, 5, 5, 5, 3, 6, 1, 7, 0, 8, -2, 8, -4, 7, -6, -1, -1, 8, 8, 6, 6, 6, 4, 7, 2, 8, 1, 9, -1, 9, -3, 8, -5, 7, -6, 5, -7]],
++    "~": [24, [3, 6, 3, 8, 4, 11, 6, 12, 8, 12, 10, 11, 14, 8, 16, 7, 18, 7, 20, 8, 21, 10, -1, -1, 3, 8, 4, 10, 6, 11, 8, 11, 10, 10, 14, 7, 16, 6, 18, 6, 20, 7, 21, 10, 21, 12]]
++};
+ 
+-            if (p0.y < y1 && p1.y < y1) {
+-                continue;
+-            } else if (p0.y < y1) {
+-                p0 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
+-            } else if (p1.y < y1) {
+-                p1 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
+-            }
++module.exports = function textVertices(text, left, baseline, scale) {
++    scale = scale || 1;
+ 
+-            if (p0.x >= x2 && p1.x >= x2) {
+-                continue;
+-            } else if (p0.x >= x2) {
+-                p0 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
+-            } else if (p1.x >= x2) {
+-                p1 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
+-            }
++    var strokes = [],
++        i, len, j, len2, glyph, x, y, prev;
+ 
+-            if (p0.y >= y2 && p1.y >= y2) {
+-                continue;
+-            } else if (p0.y >= y2) {
+-                p0 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
+-            } else if (p1.y >= y2) {
+-                p1 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
+-            }
++    for (i = 0, len = text.length; i < len; i++) {
++        glyph = simplexFont[text[i]];
++        if (!glyph) continue;
++        prev = null;
+ 
+-            if (!clippedLine || !p0.equals(clippedLine[clippedLine.length - 1])) {
+-                clippedLine = [p0];
+-                clippedLines.push(clippedLine);
+-            }
++        for (j = 0, len2 = glyph[1].length; j < len2; j += 2) {
++            if (glyph[1][j] === -1 && glyph[1][j + 1] === -1) {
++                prev = null;
+ 
+-            clippedLine.push(p1);
++            } else {
++                x = left + glyph[1][j] * scale;
++                y = baseline - glyph[1][j + 1] * scale;
++                if (prev) {
++                    strokes.push(prev.x, prev.y, x, y);
++                }
++                prev = {x: x, y: y};
++            }
+         }
++        left += glyph[0] * scale;
+     }
+ 
+-    return clippedLines;
+-}
++    return strokes;
++};
+ 
+-},{"point-geometry":404}],306:[function(require,module,exports){
++},{}],273:[function(require,module,exports){
+ 'use strict';
+ 
+-var StructArrayType = require('../util/struct_array');
+-var util = require('../util/util');
+-var Point = require('point-geometry');
+-
+ /**
+- * A collision box represents an area of the map that that is covered by a
+- * label. CollisionFeature uses one or more of these collision boxes to
+- * represent all the area covered by a single label. They are used to
+- * prevent collisions between labels.
+- *
+- * A collision box actually represents a 3d volume. The first two dimensions,
+- * x and y, are specified with `anchor` along with `x1`, `y1`, `x2`, `y2`.
+- * The third dimension, zoom, is limited by `maxScale` which determines
+- * how far in the z dimensions the box extends.
+- *
+- * As you zoom in on a map, all points on the map get further and further apart
+- * but labels stay roughly the same size. Labels cover less real world area on
+- * the map at higher zoom levels than they do at lower zoom levels. This is why
+- * areas are are represented with an anchor point and offsets from that point
+- * instead of just using four absolute points.
+- *
+- * Line labels are represented by a set of these boxes spaced out along a line.
+- * When you zoom in, line labels cover less real world distance along the line
+- * than they used to. Collision boxes near the edges that used to cover label
+- * no longer do. If a box doesn't cover the label anymore it should be ignored
+- * when doing collision checks. `maxScale` is how much you can scale the map
+- * before the label isn't within the box anymore.
+- * For example
+- * lower zoom:
+- * https://cloud.githubusercontent.com/assets/1421652/8060094/4d975f76-0e91-11e5-84b1-4edeb30a5875.png
+- * slightly higher zoom:
+- * https://cloud.githubusercontent.com/assets/1421652/8060061/26ae1c38-0e91-11e5-8c5a-9f380bf29f0a.png
+- * In the zoomed in image the two grey boxes on either side don't cover the
+- * label anymore. Their maxScale is smaller than the current scale.
+- *
++ * mapboxgl is a A WebGL JavaScript interactive maps library that can render
++ * [Mapbox vector tiles](https://www.mapbox.com/blog/vector-tiles/).
+  *
+- * @class CollisionBoxArray
+- * @private
++ * @module mapboxgl
++ * @summary WebGL JavaScript map library
+  */
+ 
+-var CollisionBoxArray = module.exports = new StructArrayType({
+-    members: [
+-        // the box is centered around the anchor point
+-        { type: 'Int16', name: 'anchorPointX' },
+-        { type: 'Int16', name: 'anchorPointY' },
+-
+-        // distances to the edges from the anchor
+-        { type: 'Int16', name: 'x1' },
+-        { type: 'Int16', name: 'y1' },
+-        { type: 'Int16', name: 'x2' },
+-        { type: 'Int16', name: 'y2' },
+-
+-        // the box is only valid for scales < maxScale.
+-        // The box does not block other boxes at scales >= maxScale;
+-        { type: 'Float32', name: 'maxScale' },
+-
+-        // the index of the feature in the original vectortile
+-        { type: 'Uint32', name: 'featureIndex' },
+-        // the source layer the feature appears in
+-        { type: 'Uint16', name: 'sourceLayerIndex' },
+-        // the bucket the feature appears in
+-        { type: 'Uint16', name: 'bucketIndex' },
+-
+-        // rotated and scaled bbox used for indexing
+-        { type: 'Int16', name: 'bbox0' },
+-        { type: 'Int16', name: 'bbox1' },
+-        { type: 'Int16', name: 'bbox2' },
+-        { type: 'Int16', name: 'bbox3' },
++// jshint -W079
++var mapboxgl = module.exports = {};
+ 
+-        { type: 'Float32', name: 'placementScale' }
+-    ]});
++mapboxgl.Map = require('./ui/map');
++mapboxgl.Control = require('./ui/control/control');
++mapboxgl.Navigation = require('./ui/control/navigation');
++mapboxgl.Geolocate = require('./ui/control/geolocate');
++mapboxgl.Attribution = require('./ui/control/attribution');
++mapboxgl.Popup = require('./ui/popup');
+ 
+-util.extendAll(CollisionBoxArray.prototype.StructType.prototype, {
+-    get anchorPoint() {
+-        return new Point(this.anchorPointX, this.anchorPointY);
+-    }
+-});
++mapboxgl.GeoJSONSource = require('./source/geojson_source');
++mapboxgl.VideoSource = require('./source/video_source');
++mapboxgl.ImageSource = require('./source/image_source');
+ 
+-},{"../util/struct_array":347,"../util/util":349,"point-geometry":404}],307:[function(require,module,exports){
+-'use strict';
++mapboxgl.Style = require('./style/style');
+ 
+-module.exports = CollisionFeature;
++mapboxgl.LngLat = require('./geo/lng_lat');
++mapboxgl.LngLatBounds = require('./geo/lng_lat_bounds');
++mapboxgl.Point = require('point-geometry');
+ 
+-/**
+- * A CollisionFeature represents the area of the tile covered by a single label.
+- * It is used with CollisionTile to check if the label overlaps with any
+- * previous labels. A CollisionFeature is mostly just a set of CollisionBox
+- * objects.
+- *
+- * @class CollisionFeature
+- * @param {Array<Point>} line The geometry the label is placed on.
+- * @param {Anchor} anchor The point along the line around which the label is anchored.
+- * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
+- * @param {Array<string>} layerIDs The IDs of the layers that this CollisionFeature is a part of.
+- * @param {Object} shaped The text or icon shaping results.
+- * @param {number} boxScale A magic number used to convert from glyph metrics units to geometry units.
+- * @param {number} padding The amount of padding to add around the label edges.
+- * @param {boolean} alignLine Whether the label is aligned with the line or the viewport.
+- *
+- * @private
+- */
+-function CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex, shaped, boxScale, padding, alignLine, straight) {
++mapboxgl.Evented = require('./util/evented');
++mapboxgl.util = require('./util/util');
+ 
+-    var y1 = shaped.top * boxScale - padding;
+-    var y2 = shaped.bottom * boxScale + padding;
+-    var x1 = shaped.left * boxScale - padding;
+-    var x2 = shaped.right * boxScale + padding;
++mapboxgl.supported = require('./util/browser').supported;
+ 
+-    this.boxStartIndex = collisionBoxArray.length;
++var ajax = require('./util/ajax');
++mapboxgl.util.getJSON = ajax.getJSON;
++mapboxgl.util.getArrayBuffer = ajax.getArrayBuffer;
+ 
+-    if (alignLine) {
++var config = require('./util/config');
++mapboxgl.config = config;
+ 
+-        var height = y2 - y1;
+-        var length = x2 - x1;
++Object.defineProperty(mapboxgl, 'accessToken', {
++    get: function() { return config.ACCESS_TOKEN; },
++    set: function(token) { config.ACCESS_TOKEN = token; }
++});
+ 
+-        if (height > 0) {
+-            // set minimum box height to avoid very many small labels
+-            height = Math.max(10 * boxScale, height);
++},{"./geo/lng_lat":269,"./geo/lng_lat_bounds":270,"./source/geojson_source":287,"./source/image_source":289,"./source/video_source":297,"./style/style":303,"./ui/control/attribution":331,"./ui/control/control":332,"./ui/control/geolocate":333,"./ui/control/navigation":334,"./ui/map":344,"./ui/popup":345,"./util/ajax":347,"./util/browser":348,"./util/config":352,"./util/evented":354,"./util/util":362,"point-geometry":400}],274:[function(require,module,exports){
++'use strict';
+ 
+-            if (straight) {
+-                // used for icon labels that are aligned with the line, but don't curve along it
+-                var vector = line[anchor.segment + 1].sub(line[anchor.segment])._unit()._mult(length);
+-                var straightLine = [anchor.sub(vector), anchor.add(vector)];
+-                this._addLineCollisionBoxes(collisionBoxArray, straightLine, anchor, 0, length, height, featureIndex, sourceLayerIndex, bucketIndex);
+-            } else {
+-                // used for text labels that curve along a line
+-                this._addLineCollisionBoxes(collisionBoxArray, line, anchor, anchor.segment, length, height, featureIndex, sourceLayerIndex, bucketIndex);
+-            }
+-        }
++var TilePyramid = require('../source/tile_pyramid');
++var pyramid = new TilePyramid({ tileSize: 512 });
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-    } else {
+-        collisionBoxArray.emplaceBack(anchor.x, anchor.y, x1, y1, x2, y2, Infinity, featureIndex, sourceLayerIndex, bucketIndex,
+-                0, 0, 0, 0, 0);
+-    }
++module.exports = drawBackground;
+ 
+-    this.boxEndIndex = collisionBoxArray.length;
+-}
++function drawBackground(painter, source, layer) {
++    var gl = painter.gl;
++    var transform = painter.transform;
++    var color = util.premultiply(layer.paint['background-color']);
++    var image = layer.paint['background-pattern'];
++    var opacity = layer.paint['background-opacity'];
++    var program;
+ 
+-/**
+- * Create a set of CollisionBox objects for a line.
+- *
+- * @param {Array<Point>} line
+- * @param {Anchor} anchor
+- * @param {number} labelLength The length of the label in geometry units.
+- * @param {Anchor} anchor The point along the line around which the label is anchored.
+- * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
+- * @param {number} boxSize The size of the collision boxes that will be created.
+- *
+- * @private
+- */
+-CollisionFeature.prototype._addLineCollisionBoxes = function(collisionBoxArray, line, anchor, segment, labelLength, boxSize, featureIndex, sourceLayerIndex, bucketIndex) {
+-    var step = boxSize / 2;
+-    var nBoxes = Math.floor(labelLength / step);
++    var imagePosA = image ? painter.spriteAtlas.getPosition(image.from, true) : null;
++    var imagePosB = image ? painter.spriteAtlas.getPosition(image.to, true) : null;
+ 
+-    // offset the center of the first box by half a box so that the edge of the
+-    // box is at the edge of the label.
+-    var firstBoxOffset = -boxSize / 2;
++    painter.setDepthSublayer(0);
++    if (imagePosA && imagePosB) {
+ 
+-    var bboxes = this.boxes;
++        if (painter.isOpaquePass) return;
+ 
+-    var p = anchor;
+-    var index = segment + 1;
+-    var anchorDistance = firstBoxOffset;
++        // Draw texture fill
++        program = painter.useProgram('pattern');
++        gl.uniform1i(program.u_image, 0);
++        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
++        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
++        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
++        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
++        gl.uniform1f(program.u_opacity, opacity);
+ 
+-    // move backwards along the line to the first segment the label appears on
+-    do {
+-        index--;
++        gl.uniform1f(program.u_mix, image.t);
+ 
+-        // there isn't enough room for the label after the beginning of the line
+-        // checkMaxAngle should have already caught this
+-        if (index < 0) return bboxes;
++        painter.spriteAtlas.bind(gl, true);
+ 
+-        anchorDistance -= line[index].dist(p);
+-        p = line[index];
+-    } while (anchorDistance > -labelLength / 2);
++        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
++    } else {
++        // Draw filling rectangle.
++        if (painter.isOpaquePass !== (color[3] === 1)) return;
+ 
+-    var segmentLength = line[index].dist(line[index + 1]);
++        program = painter.useProgram('fill');
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, opacity);
++        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
++    }
+ 
+-    for (var i = 0; i < nBoxes; i++) {
+-        // the distance the box will be from the anchor
+-        var boxDistanceToAnchor = -labelLength / 2 + i * step;
++    gl.disable(gl.STENCIL_TEST);
+ 
+-        // the box is not on the current segment. Move to the next segment.
+-        while (anchorDistance + segmentLength < boxDistanceToAnchor) {
+-            anchorDistance += segmentLength;
+-            index++;
++    // We need to draw the background in tiles in order to use calculatePosMatrix
++    // which applies the projection matrix (transform.projMatrix). Otherwise
++    // the depth and stencil buffers get into a bad state.
++    // This can be refactored into a single draw call once earcut lands and
++    // we don't have so much going on in the stencil buffer.
++    var coords = pyramid.coveringTiles(transform);
++    for (var c = 0; c < coords.length; c++) {
++        var coord = coords[c];
++        var tileSize = 512;
++        // var pixelsToTileUnitsBound = pixelsToTileUnits.bind({coord:coord, tileSize: tileSize});
++        if (imagePosA && imagePosB) {
++            var imageSizeScaledA = [
++                (imagePosA.size[0] * image.fromScale),
++                (imagePosA.size[1] * image.fromScale)
++            ];
++            var imageSizeScaledB = [
++                (imagePosB.size[0] * image.toScale),
++                (imagePosB.size[1] * image.toScale)
++            ];
++            var tile = {coord:coord, tileSize: tileSize};
+ 
+-            // There isn't enough room before the end of the line.
+-            if (index + 1 >= line.length) return bboxes;
++            gl.uniform2fv(program.u_patternscale_a, [
++                1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
++                1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
++            ]);
+ 
+-            segmentLength = line[index].dist(line[index + 1]);
+-        }
++            gl.uniform2fv(program.u_patternscale_b, [
++                1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
++                1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
++            ]);
++            var tileSizeAtNearestZoom = tileSize * Math.pow(2, painter.transform.tileZoom - coord.z);
+ 
+-        // the distance the box will be from the beginning of the segment
+-        var segmentBoxDistance = boxDistanceToAnchor - anchorDistance;
++            var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
++            var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * coord.y;
+ 
+-        var p0 = line[index];
+-        var p1 = line[index + 1];
+-        var boxAnchorPoint = p1.sub(p0)._unit()._mult(segmentBoxDistance)._add(p0)._round();
++            var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
++            var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * coord.y;
+ 
+-        var distanceToInnerEdge = Math.max(Math.abs(boxDistanceToAnchor - firstBoxOffset) - step / 2, 0);
+-        var maxScale = labelLength / 2 / distanceToInnerEdge;
++            gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
++            gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
++        }
+ 
+-        collisionBoxArray.emplaceBack(boxAnchorPoint.x, boxAnchorPoint.y,
+-                -boxSize / 2, -boxSize / 2, boxSize / 2, boxSize / 2, maxScale,
+-                featureIndex, sourceLayerIndex, bucketIndex,
+-                0, 0, 0, 0, 0);
++        gl.uniformMatrix4fv(program.u_matrix, false, painter.transform.calculatePosMatrix(coord));
++        gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
+     }
+ 
+-    return bboxes;
+-};
++    gl.stencilMask(0x00);
++    gl.stencilFunc(gl.EQUAL, 0x80, 0x80);
++}
+ 
+-},{}],308:[function(require,module,exports){
++},{"../source/pixels_to_tile_units":290,"../source/tile_pyramid":295,"../util/util":362}],275:[function(require,module,exports){
+ 'use strict';
+ 
+-var Point = require('point-geometry');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var Grid = require('grid-index');
++var browser = require('../util/browser');
+ 
+-module.exports = CollisionTile;
++module.exports = drawCircles;
+ 
+-/**
+- * A collision tile used to prevent symbols from overlapping. It keep tracks of
+- * where previous symbols have been placed and is used to check if a new
+- * symbol overlaps with any previously added symbols.
+- *
+- * @class CollisionTile
+- * @param {number} angle
+- * @param {number} pitch
+- * @private
+- */
+-function CollisionTile(angle, pitch, collisionBoxArray) {
+-    if (typeof angle === 'object') {
+-        var serialized = angle;
+-        collisionBoxArray = pitch;
+-        angle = serialized.angle;
+-        pitch = serialized.pitch;
+-        this.grid = new Grid(serialized.grid);
+-        this.ignoredGrid = new Grid(serialized.ignoredGrid);
+-    } else {
+-        this.grid = new Grid(EXTENT, 12, 6);
+-        this.ignoredGrid = new Grid(EXTENT, 12, 0);
+-    }
++function drawCircles(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
+ 
+-    this.angle = angle;
+-    this.pitch = pitch;
++    var gl = painter.gl;
+ 
+-    var sin = Math.sin(angle),
+-        cos = Math.cos(angle);
+-    this.rotationMatrix = [cos, -sin, sin, cos];
+-    this.reverseRotationMatrix = [cos, sin, -sin, cos];
++    painter.setDepthSublayer(0);
++    painter.depthMask(false);
+ 
+-    // Stretch boxes in y direction to account for the map tilt.
+-    this.yStretch = 1 / Math.cos(pitch / 180 * Math.PI);
++    // Allow circles to be drawn across boundaries, so that
++    // large circles are not clipped to tiles
++    gl.disable(gl.STENCIL_TEST);
+ 
+-    // The amount the map is squished depends on the y position.
+-    // Sort of account for this by making all boxes a bit bigger.
+-    this.yStretch = Math.pow(this.yStretch, 1.3);
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
+ 
+-    this.collisionBoxArray = collisionBoxArray;
+-    if (collisionBoxArray.length === 0) {
+-        // the first collisionBoxArray is passed to a CollisionTile
++        var tile = source.getTile(coord);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bufferGroups = bucket.bufferGroups.circle;
++        if (!bufferGroups) continue;
+ 
+-        // tempCollisionBox
+-        collisionBoxArray.emplaceBack();
++        var program = painter.useProgram('circle', bucket.getProgramMacros('circle', layer));
+ 
+-        var maxInt16 = 32767;
+-        //left
+-        collisionBoxArray.emplaceBack(0, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
+-        // right
+-        collisionBoxArray.emplaceBack(EXTENT, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
+-        // top
+-        collisionBoxArray.emplaceBack(0, 0, -maxInt16, 0, maxInt16, 0, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
+-        // bottom
+-        collisionBoxArray.emplaceBack(0, EXTENT, -maxInt16, 0, maxInt16, 0, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
+-    }
++        gl.uniform2fv(program.u_extrude_scale, painter.transform.pixelsToGLUnits);
++        gl.uniform1f(program.u_blur, layer.paint['circle-blur']);
++        gl.uniform1f(program.u_devicepixelratio, browser.devicePixelRatio);
++        gl.uniform1f(program.u_opacity, layer.paint['circle-opacity']);
+ 
+-    this.tempCollisionBox = collisionBoxArray.get(0);
+-    this.edges = [
+-        collisionBoxArray.get(1),
+-        collisionBoxArray.get(2),
+-        collisionBoxArray.get(3),
+-        collisionBoxArray.get(4)
+-    ];
++        gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
++            coord.posMatrix,
++            tile,
++            layer.paint['circle-translate'],
++            layer.paint['circle-translate-anchor']
++        ));
++
++        bucket.setUniforms(gl, 'circle', program, layer, {zoom: painter.transform.zoom});
++
++        for (var k = 0; k < bufferGroups.length; k++) {
++            var group = bufferGroups[k];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element, group.paint[layer.id]);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++        }
++    }
+ }
+ 
+-CollisionTile.prototype.serialize = function() {
+-    var data = {
+-        angle: this.angle,
+-        pitch: this.pitch,
+-        grid: this.grid.toArrayBuffer(),
+-        ignoredGrid: this.ignoredGrid.toArrayBuffer()
+-    };
+-    return {
+-        data: data,
+-        transferables: [data.grid, data.ignoredGrid]
+-    };
+-};
++},{"../util/browser":348}],276:[function(require,module,exports){
++'use strict';
+ 
+-CollisionTile.prototype.minScale = 0.25;
+-CollisionTile.prototype.maxScale = 2;
++module.exports = drawCollisionDebug;
+ 
++function drawCollisionDebug(painter, source, layer, coords) {
++    var gl = painter.gl;
++    gl.enable(gl.STENCIL_TEST);
++    var program = painter.useProgram('collisionbox');
+ 
+-/**
+- * Find the scale at which the collisionFeature can be shown without
+- * overlapping with other features.
+- *
+- * @param {CollisionFeature} collisionFeature
+- * @returns {number} placementScale
+- * @private
+- */
+-CollisionTile.prototype.placeCollisionFeature = function(collisionFeature, allowOverlap, avoidEdges) {
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
++        var tile = source.getTile(coord);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bufferGroups = bucket.bufferGroups.collisionBox;
+ 
+-    var collisionBoxArray = this.collisionBoxArray;
+-    var minPlacementScale = this.minScale;
+-    var rotationMatrix = this.rotationMatrix;
+-    var yStretch = this.yStretch;
++        if (!bufferGroups || !bufferGroups.length) continue;
++        var group = bufferGroups[0];
++        if (group.layout.vertex.length === 0) continue;
+ 
+-    for (var b = collisionFeature.boxStartIndex; b < collisionFeature.boxEndIndex; b++) {
++        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
+ 
+-        var box = collisionBoxArray.get(b);
++        painter.enableTileClippingMask(coord);
+ 
+-        var anchorPoint = box.anchorPoint._matMult(rotationMatrix);
+-        var x = anchorPoint.x;
+-        var y = anchorPoint.y;
++        painter.lineWidth(1);
++        gl.uniform1f(program.u_scale, Math.pow(2, painter.transform.zoom - tile.coord.z));
++        gl.uniform1f(program.u_zoom, painter.transform.zoom * 10);
++        gl.uniform1f(program.u_maxzoom, (tile.coord.z + 1) * 10);
+ 
+-        var x1 = x + box.x1;
+-        var y1 = y + box.y1 * yStretch;
+-        var x2 = x + box.x2;
+-        var y2 = y + box.y2 * yStretch;
++        group.vaos[layer.id].bind(gl, program, group.layout.vertex);
++        gl.drawArrays(gl.LINES, 0, group.layout.vertex.length);
++    }
++}
+ 
+-        box.bbox0 = x1;
+-        box.bbox1 = y1;
+-        box.bbox2 = x2;
+-        box.bbox3 = y2;
++},{}],277:[function(require,module,exports){
++'use strict';
+ 
+-        if (!allowOverlap) {
+-            var blockingBoxes = this.grid.query(x1, y1, x2, y2);
++var textVertices = require('../lib/debugtext');
++var browser = require('../util/browser');
++var mat4 = require('gl-matrix').mat4;
++var EXTENT = require('../data/bucket').EXTENT;
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('./vertex_array_object');
+ 
+-            for (var i = 0; i < blockingBoxes.length; i++) {
+-                var blocking = collisionBoxArray.get(blockingBoxes[i]);
+-                var blockingAnchorPoint = blocking.anchorPoint._matMult(rotationMatrix);
++module.exports = drawDebug;
+ 
+-                minPlacementScale = this.getPlacementScale(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking);
+-                if (minPlacementScale >= this.maxScale) {
+-                    return minPlacementScale;
+-                }
+-            }
+-        }
++function drawDebug(painter, source, coords) {
++    if (painter.isOpaquePass) return;
++    if (!painter.options.debug) return;
+ 
+-        if (avoidEdges) {
+-            var rotatedCollisionBox;
++    for (var i = 0; i < coords.length; i++) {
++        drawDebugTile(painter, source, coords[i]);
++    }
++}
+ 
+-            if (this.angle) {
+-                var reverseRotationMatrix = this.reverseRotationMatrix;
+-                var tl = new Point(box.x1, box.y1).matMult(reverseRotationMatrix);
+-                var tr = new Point(box.x2, box.y1).matMult(reverseRotationMatrix);
+-                var bl = new Point(box.x1, box.y2).matMult(reverseRotationMatrix);
+-                var br = new Point(box.x2, box.y2).matMult(reverseRotationMatrix);
++function drawDebugTile(painter, source, coord) {
++    var gl = painter.gl;
+ 
+-                rotatedCollisionBox = this.tempCollisionBox;
+-                rotatedCollisionBox.anchorPointX = box.anchorPoint.x;
+-                rotatedCollisionBox.anchorPointY = box.anchorPoint.y;
+-                rotatedCollisionBox.x1 = Math.min(tl.x, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.y1 = Math.min(tl.y, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.x2 = Math.max(tl.x, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.y2 = Math.max(tl.y, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.maxScale = box.maxScale;
+-            } else {
+-                rotatedCollisionBox = box;
+-            }
++    gl.disable(gl.STENCIL_TEST);
++    painter.lineWidth(1 * browser.devicePixelRatio);
+ 
+-            for (var k = 0; k < this.edges.length; k++) {
+-                var edgeBox = this.edges[k];
+-                minPlacementScale = this.getPlacementScale(minPlacementScale, box.anchorPoint, rotatedCollisionBox, edgeBox.anchorPoint, edgeBox);
+-                if (minPlacementScale >= this.maxScale) {
+-                    return minPlacementScale;
+-                }
+-            }
+-        }
++    var posMatrix = coord.posMatrix;
++    var program = painter.useProgram('debug');
++
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++    gl.uniform4f(program.u_color, 1, 0, 0, 1);
++    painter.debugVAO.bind(gl, program, painter.debugBuffer);
++    gl.drawArrays(gl.LINE_STRIP, 0, painter.debugBuffer.length);
++
++    var vertices = textVertices(coord.toString(), 50, 200, 5);
++    var debugTextArray = new painter.PosArray();
++    for (var v = 0; v < vertices.length; v += 2) {
++        debugTextArray.emplaceBack(vertices[v], vertices[v + 1]);
+     }
++    var debugTextBuffer = new Buffer(debugTextArray.serialize(), painter.PosArray.serialize(), Buffer.BufferType.VERTEX);
++    var debugTextVAO = new VertexArrayObject();
++    debugTextVAO.bind(gl, program, debugTextBuffer);
++    gl.uniform4f(program.u_color, 1, 1, 1, 1);
+ 
+-    return minPlacementScale;
+-};
++    // Draw the halo with multiple 1px lines instead of one wider line because
++    // the gl spec doesn't guarantee support for lines with width > 1.
++    var tileSize = source.getTile(coord).tileSize;
++    var onePixel = EXTENT / (Math.pow(2, painter.transform.zoom - coord.z) * tileSize);
++    var translations = [[-1, -1], [-1, 1], [1, -1], [1, 1]];
++    for (var i = 0; i < translations.length; i++) {
++        var translation = translations[i];
++        gl.uniformMatrix4fv(program.u_matrix, false, mat4.translate([], posMatrix, [onePixel * translation[0], onePixel * translation[1], 0]));
++        gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
++    }
+ 
+-CollisionTile.prototype.queryRenderedSymbols = function(minX, minY, maxX, maxY, scale) {
+-    var sourceLayerFeatures = {};
+-    var result = [];
++    gl.uniform4f(program.u_color, 0, 0, 0, 1);
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++    gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
++}
+ 
+-    var collisionBoxArray = this.collisionBoxArray;
+-    var rotationMatrix = this.rotationMatrix;
+-    var anchorPoint = new Point(minX, minY)._matMult(rotationMatrix);
++},{"../data/bucket":260,"../data/buffer":265,"../lib/debugtext":272,"../util/browser":348,"./vertex_array_object":286,"gl-matrix":154}],278:[function(require,module,exports){
++'use strict';
+ 
+-    var queryBox = this.tempCollisionBox;
+-    queryBox.anchorX = anchorPoint.x;
+-    queryBox.anchorY = anchorPoint.y;
+-    queryBox.x1 = 0;
+-    queryBox.y1 = 0;
+-    queryBox.x2 = maxX - minX;
+-    queryBox.y2 = maxY - minY;
+-    queryBox.maxScale = scale;
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-    // maxScale is stored using a Float32. Convert `scale` to the stored Float32 value.
+-    scale = queryBox.maxScale;
++module.exports = draw;
+ 
+-    var searchBox = [
+-        anchorPoint.x + queryBox.x1 / scale,
+-        anchorPoint.y + queryBox.y1 / scale * this.yStretch,
+-        anchorPoint.x + queryBox.x2 / scale,
+-        anchorPoint.y + queryBox.y2 / scale * this.yStretch
+-    ];
++function draw(painter, source, layer, coords) {
++    var gl = painter.gl;
++    gl.enable(gl.STENCIL_TEST);
+ 
+-    var blockingBoxKeys = this.grid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
+-    var blockingBoxKeys2 = this.ignoredGrid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
+-    for (var k = 0; k < blockingBoxKeys2.length; k++) {
+-        blockingBoxKeys.push(blockingBoxKeys2[k]);
++    var color = util.premultiply(layer.paint['fill-color']);
++    var image = layer.paint['fill-pattern'];
++    var strokeColor = util.premultiply(layer.paint['fill-outline-color']);
++    var opacity = layer.paint['fill-opacity'];
++
++    // Draw fill
++    if (image ? !painter.isOpaquePass : painter.isOpaquePass === (color[3] === 1 && opacity === 1)) {
++        // Once we switch to earcut drawing we can pull most of the WebGL setup
++        // outside of this coords loop.
++        for (var i = 0; i < coords.length; i++) {
++            drawFill(painter, source, layer, coords[i]);
++        }
+     }
+ 
+-    for (var i = 0; i < blockingBoxKeys.length; i++) {
+-        var blocking = collisionBoxArray.get(blockingBoxKeys[i]);
++    // Draw stroke
++    if (!painter.isOpaquePass && layer.paint['fill-antialias']) {
++        if (strokeColor || !layer.paint['fill-pattern']) {
++            var outlineProgram = painter.useProgram('outline');
++            painter.lineWidth(2);
++            painter.depthMask(false);
+ 
+-        var sourceLayer = blocking.sourceLayerIndex;
+-        var featureIndex = blocking.featureIndex;
+-        if (sourceLayerFeatures[sourceLayer] === undefined) {
+-            sourceLayerFeatures[sourceLayer] = {};
+-        }
++            if (strokeColor) {
++                // If we defined a different color for the fill outline, we are
++                // going to ignore the bits in 0x07 and just care about the global
++                // clipping mask.
++                painter.setDepthSublayer(2);
++            } else {
++                // Otherwise, we only want to drawFill the antialiased parts that are
++                // *outside* the current shape. This is important in case the fill
++                // or stroke color is translucent. If we wouldn't clip to outside
++                // the current shape, some pixels from the outline stroke overlapped
++                // the (non-antialiased) fill.
++                painter.setDepthSublayer(0);
++            }
++            gl.uniform2f(outlineProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
++            gl.uniform4fv(outlineProgram.u_color, strokeColor ? strokeColor : color);
++            gl.uniform1f(outlineProgram.u_opacity, opacity);
++
++            for (var j = 0; j < coords.length; j++) {
++                drawStroke(painter, source, layer, coords[j]);
++            }
++        } else {
++            var outlinePatternProgram = painter.useProgram('outlinepattern');
++            painter.lineWidth(2);
++            painter.depthMask(false);
++            // Otherwise, we only want to drawFill the antialiased parts that are
++            // *outside* the current shape. This is important in case the fill
++            // or stroke color is translucent. If we wouldn't clip to outside
++            // the current shape, some pixels from the outline stroke overlapped
++            // the (non-antialiased) fill.
++            painter.setDepthSublayer(0);
++            gl.uniform2f(outlinePatternProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
+ 
+-        if (!sourceLayerFeatures[sourceLayer][featureIndex]) {
+-            var blockingAnchorPoint = blocking.anchorPoint.matMult(rotationMatrix);
+-            var minPlacementScale = this.getPlacementScale(this.minScale, anchorPoint, queryBox, blockingAnchorPoint, blocking);
+-            if (minPlacementScale >= scale) {
+-                sourceLayerFeatures[sourceLayer][featureIndex] = true;
+-                result.push(blockingBoxKeys[i]);
++            for (var k = 0; k < coords.length; k++) {
++                drawStroke(painter, source, layer, coords[k]);
+             }
+         }
+-    }
+-
+-    return result;
+-};
+-
+-CollisionTile.prototype.getPlacementScale = function(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking) {
+ 
+-    // Find the lowest scale at which the two boxes can fit side by side without overlapping.
+-    // Original algorithm:
+-    var anchorDiffX = anchorPoint.x - blockingAnchorPoint.x;
+-    var anchorDiffY = anchorPoint.y - blockingAnchorPoint.y;
+-    var s1 = (blocking.x1 - box.x2) / anchorDiffX; // scale at which new box is to the left of old box
+-    var s2 = (blocking.x2 - box.x1) / anchorDiffX; // scale at which new box is to the right of old box
+-    var s3 = (blocking.y1 - box.y2) * this.yStretch / anchorDiffY; // scale at which new box is to the top of old box
+-    var s4 = (blocking.y2 - box.y1) * this.yStretch / anchorDiffY; // scale at which new box is to the bottom of old box
++    }
++}
+ 
+-    if (isNaN(s1) || isNaN(s2)) s1 = s2 = 1;
+-    if (isNaN(s3) || isNaN(s4)) s3 = s4 = 1;
++function drawFill(painter, source, layer, coord) {
++    var tile = source.getTile(coord);
++    var bucket = tile.getBucket(layer);
++    if (!bucket) return;
++    var bufferGroups = bucket.bufferGroups.fill;
++    if (!bufferGroups) return;
+ 
+-    var collisionFreeScale = Math.min(Math.max(s1, s2), Math.max(s3, s4));
+-    var blockingMaxScale = blocking.maxScale;
+-    var boxMaxScale = box.maxScale;
++    var gl = painter.gl;
+ 
+-    if (collisionFreeScale > blockingMaxScale) {
+-        // After a box's maxScale the label has shrunk enough that the box is no longer needed to cover it,
+-        // so unblock the new box at the scale that the old box disappears.
+-        collisionFreeScale = blockingMaxScale;
+-    }
++    var color = util.premultiply(layer.paint['fill-color']);
++    var image = layer.paint['fill-pattern'];
++    var opacity = layer.paint['fill-opacity'];
+ 
+-    if (collisionFreeScale > boxMaxScale) {
+-        // If the box can only be shown after it is visible, then the box can never be shown.
+-        // But the label can be shown after this box is not visible.
+-        collisionFreeScale = boxMaxScale;
+-    }
++    var posMatrix = coord.posMatrix;
++    var translatedPosMatrix = painter.translatePosMatrix(posMatrix, tile, layer.paint['fill-translate'], layer.paint['fill-translate-anchor']);
+ 
+-    if (collisionFreeScale > minPlacementScale &&
+-            collisionFreeScale >= blocking.placementScale) {
+-        // If this collision occurs at a lower scale than previously found collisions
+-        // and the collision occurs while the other label is visible
++    // Draw the stencil mask.
++    painter.setDepthSublayer(1);
+ 
+-        // this this is the lowest scale at which the label won't collide with anything
+-        minPlacementScale = collisionFreeScale;
+-    }
++    // We're only drawFilling to the first seven bits (== support a maximum of
++    // 8 overlapping polygons in one place before we get rendering errors).
++    gl.stencilMask(0x07);
++    gl.clear(gl.STENCIL_BUFFER_BIT);
+ 
+-    return minPlacementScale;
+-};
++    // Draw front facing triangles. Wherever the 0x80 bit is 1, we are
++    // increasing the lower 7 bits by one if the triangle is a front-facing
++    // triangle. This means that all visible polygons should be in CCW
++    // orientation, while all holes (see below) are in CW orientation.
++    painter.enableTileClippingMask(coord);
+ 
++    // When we do a nonzero fill, we count the number of times a pixel is
++    // covered by a counterclockwise polygon, and subtract the number of
++    // times it is "uncovered" by a clockwise polygon.
++    gl.stencilOpSeparate(gl.FRONT, gl.KEEP, gl.KEEP, gl.INCR_WRAP);
++    gl.stencilOpSeparate(gl.BACK, gl.KEEP, gl.KEEP, gl.DECR_WRAP);
+ 
+-/**
+- * Remember this collisionFeature and what scale it was placed at to block
+- * later features from overlapping with it.
+- *
+- * @param {CollisionFeature} collisionFeature
+- * @param {number} minPlacementScale
+- * @private
+- */
+-CollisionTile.prototype.insertCollisionFeature = function(collisionFeature, minPlacementScale, ignorePlacement) {
++    // When drawFilling a shape, we first drawFill all shapes to the stencil buffer
++    // and incrementing all areas where polygons are
++    gl.colorMask(false, false, false, false);
++    painter.depthMask(false);
+ 
+-    var grid = ignorePlacement ? this.ignoredGrid : this.grid;
+-    var collisionBoxArray = this.collisionBoxArray;
++    // Draw the actual triangle fan into the stencil buffer.
++    var fillProgram = painter.useProgram('fill');
++    gl.uniformMatrix4fv(fillProgram.u_matrix, false, translatedPosMatrix);
+ 
+-    for (var k = collisionFeature.boxStartIndex; k < collisionFeature.boxEndIndex; k++) {
+-        var box = collisionBoxArray.get(k);
+-        box.placementScale = minPlacementScale;
+-        if (minPlacementScale < this.maxScale) {
+-            grid.insert(k, box.bbox0, box.bbox1, box.bbox2, box.bbox3);
+-        }
++    for (var i = 0; i < bufferGroups.length; i++) {
++        var group = bufferGroups[i];
++        group.vaos[layer.id].bind(gl, fillProgram, group.layout.vertex, group.layout.element);
++        gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+     }
+-};
+ 
+-},{"../data/bucket":247,"grid-index":373,"point-geometry":404}],309:[function(require,module,exports){
+-'use strict';
++    // Now that we have the stencil mask in the stencil buffer, we can start
++    // writing to the color buffer.
++    gl.colorMask(true, true, true, true);
++    painter.depthMask(true);
+ 
+-var interpolate = require('../util/interpolate');
+-var Anchor = require('../symbol/anchor');
+-var checkMaxAngle = require('./check_max_angle');
++    // From now on, we don't want to update the stencil buffer anymore.
++    gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
++    gl.stencilMask(0x0);
++    var program;
+ 
+-module.exports = getAnchors;
++    if (image) {
++        // Draw texture fill
++        program = painter.useProgram('pattern');
++        setPattern(image, opacity, tile, coord, painter, program);
+ 
+-function getAnchors(line, spacing, maxAngle, shapedText, shapedIcon, glyphSize, boxScale, overscaling, tileExtent) {
++        gl.activeTexture(gl.TEXTURE0);
++        painter.spriteAtlas.bind(gl, true);
+ 
+-    // Resample a line to get anchor points for labels and check that each
+-    // potential label passes text-max-angle check and has enough froom to fit
+-    // on the line.
++        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
+ 
+-    var angleWindowSize = shapedText ?
+-        3 / 5 * glyphSize * boxScale :
+-        0;
++    } else {
++        // Draw filling rectangle.
++        program = painter.useProgram('fill');
++        gl.uniform4fv(fillProgram.u_color, color);
++        gl.uniform1f(fillProgram.u_opacity, opacity);
++        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
++    }
+ 
+-    var labelLength = Math.max(
+-        shapedText ? shapedText.right - shapedText.left : 0,
+-        shapedIcon ? shapedIcon.right - shapedIcon.left : 0);
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+ 
+-    // Is the line continued from outside the tile boundary?
+-    var isLineContinued = line[0].x === 0 || line[0].x === tileExtent || line[0].y === 0 || line[0].y === tileExtent;
++    // Only draw regions that we marked
++    gl.stencilFunc(gl.NOTEQUAL, 0x0, 0x07);
+ 
+-    // Is the label long, relative to the spacing?
+-    // If so, adjust the spacing so there is always a minimum space of `spacing / 4` between label edges.
+-    if (spacing - labelLength * boxScale  < spacing / 4) {
+-        spacing = labelLength * boxScale + spacing / 4;
+-    }
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
+ 
+-    // Offset the first anchor by:
+-    // Either half the label length plus a fixed extra offset if the line is not continued
+-    // Or half the spacing if the line is continued.
++    gl.stencilMask(0x00);
++}
+ 
+-    // For non-continued lines, add a bit of fixed extra offset to avoid collisions at T intersections.
+-    var fixedExtraOffset = glyphSize * 2;
++function drawStroke(painter, source, layer, coord) {
++    var tile = source.getTile(coord);
++    var bucket = tile.getBucket(layer);
++    if (!bucket) return;
+ 
+-    var offset = !isLineContinued ?
+-        ((labelLength / 2 + fixedExtraOffset) * boxScale * overscaling) % spacing :
+-        (spacing / 2 * overscaling) % spacing;
++    var gl = painter.gl;
++    var bufferGroups = bucket.bufferGroups.fill;
+ 
+-    return resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength * boxScale, isLineContinued, false, tileExtent);
+-}
++    var image = layer.paint['fill-pattern'];
++    var opacity = layer.paint['fill-opacity'];
++    var program = image ? painter.useProgram('outlinepattern') : painter.useProgram('outline');
+ 
++    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
++        coord.posMatrix,
++        tile,
++        layer.paint['fill-translate'],
++        layer.paint['fill-translate-anchor']
++    ));
+ 
+-function resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, placeAtMiddle, tileExtent) {
++    if (image) { setPattern(image, opacity, tile, coord, painter, program); }
+ 
+-    var halfLabelLength = labelLength / 2;
+-    var lineLength = 0;
+-    for (var k = 0; k < line.length - 1; k++) {
+-        lineLength += line[k].dist(line[k + 1]);
++    painter.enableTileClippingMask(coord);
++
++    for (var k = 0; k < bufferGroups.length; k++) {
++        var group = bufferGroups[k];
++        group.secondVaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element2);
++        gl.drawElements(gl.LINES, group.layout.element2.length * 2, gl.UNSIGNED_SHORT, 0);
+     }
++}
+ 
+-    var distance = 0,
+-        markedDistance = offset - spacing;
+ 
+-    var anchors = [];
++function setPattern(image, opacity, tile, coord, painter, program) {
++    var gl = painter.gl;
+ 
+-    for (var i = 0; i < line.length - 1; i++) {
++    var imagePosA = painter.spriteAtlas.getPosition(image.from, true);
++    var imagePosB = painter.spriteAtlas.getPosition(image.to, true);
++    if (!imagePosA || !imagePosB) return;
+ 
+-        var a = line[i],
+-            b = line[i + 1];
+ 
+-        var segmentDist = a.dist(b),
+-            angle = b.angleTo(a);
++    gl.uniform1i(program.u_image, 0);
++    gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
++    gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
++    gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
++    gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
++    gl.uniform1f(program.u_opacity, opacity);
++    gl.uniform1f(program.u_mix, image.t);
+ 
+-        while (markedDistance + spacing < distance + segmentDist) {
+-            markedDistance += spacing;
++    var imageSizeScaledA = [
++        (imagePosA.size[0] * image.fromScale),
++        (imagePosA.size[1] * image.fromScale)
++    ];
++    var imageSizeScaledB = [
++        (imagePosB.size[0] * image.toScale),
++        (imagePosB.size[1] * image.toScale)
++    ];
+ 
+-            var t = (markedDistance - distance) / segmentDist,
+-                x = interpolate(a.x, b.x, t),
+-                y = interpolate(a.y, b.y, t);
++    gl.uniform2fv(program.u_patternscale_a, [
++        1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
++        1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
++    ]);
+ 
+-            // Check that the point is within the tile boundaries and that
+-            // the label would fit before the beginning and end of the line
+-            // if placed at this point.
+-            if (x >= 0 && x < tileExtent && y >= 0 && y < tileExtent &&
+-                    markedDistance - halfLabelLength >= 0 &&
+-                    markedDistance + halfLabelLength <= lineLength) {
+-                var anchor = new Anchor(x, y, angle, i)._round();
++    gl.uniform2fv(program.u_patternscale_b, [
++        1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
++        1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
++    ]);
+ 
+-                if (!angleWindowSize || checkMaxAngle(line, anchor, labelLength, angleWindowSize, maxAngle)) {
+-                    anchors.push(anchor);
+-                }
+-            }
+-        }
++    var tileSizeAtNearestZoom = tile.tileSize * Math.pow(2, painter.transform.tileZoom - tile.coord.z);
+ 
+-        distance += segmentDist;
+-    }
++    // shift images to match at tile boundaries
++    var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
++    var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * tile.coord.y;
+ 
+-    if (!placeAtMiddle && !anchors.length && !isLineContinued) {
+-        // The first attempt at finding anchors at which labels can be placed failed.
+-        // Try again, but this time just try placing one anchor at the middle of the line.
+-        // This has the most effect for short lines in overscaled tiles, since the
+-        // initial offset used in overscaled tiles is calculated to align labels with positions in
+-        // parent tiles instead of placing the label as close to the beginning as possible.
+-        anchors = resample(line, distance / 2, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, true, tileExtent);
+-    }
++    var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
++    var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * tile.coord.y;
+ 
+-    return anchors;
++    gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
++    gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
++
++    gl.activeTexture(gl.TEXTURE0);
++    painter.spriteAtlas.bind(gl, true);
+ }
+ 
+-},{"../symbol/anchor":303,"../util/interpolate":343,"./check_max_angle":304}],310:[function(require,module,exports){
++},{"../source/pixels_to_tile_units":290,"../util/util":362}],279:[function(require,module,exports){
+ 'use strict';
+ 
+-var ShelfPack = require('shelf-pack');
++var browser = require('../util/browser');
++var mat2 = require('gl-matrix').mat2;
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-module.exports = GlyphAtlas;
+-function GlyphAtlas(width, height) {
+-    this.width = width;
+-    this.height = height;
++/**
++ * Draw a line. Under the hood this will read elements from
++ * a tile, dash textures from a lineAtlas, and style properties from a layer.
++ * @param {Object} painter
++ * @param {Object} layer
++ * @param {Object} posMatrix
++ * @param {Tile} tile
++ * @returns {undefined} draws with the painter
++ * @private
++ */
++module.exports = function drawLine(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
++    painter.setDepthSublayer(0);
++    painter.depthMask(false);
+ 
+-    this.bin = new ShelfPack(width, height);
+-    this.index = {};
+-    this.ids = {};
+-    this.data = new Uint8Array(width * height);
+-}
++    var gl = painter.gl;
++    gl.enable(gl.STENCIL_TEST);
+ 
+-GlyphAtlas.prototype.getGlyphs = function() {
+-    var glyphs = {},
+-        split,
+-        name,
+-        id;
++    // don't draw zero-width lines
++    if (layer.paint['line-width'] <= 0) return;
+ 
+-    for (var key in this.ids) {
+-        split = key.split('#');
+-        name = split[0];
+-        id = split[1];
++    // the distance over which the line edge fades out.
++    // Retina devices need a smaller distance to avoid aliasing.
++    var antialiasing = 1 / browser.devicePixelRatio;
+ 
+-        if (!glyphs[name]) glyphs[name] = [];
+-        glyphs[name].push(id);
++    var blur = layer.paint['line-blur'] + antialiasing;
++    var edgeWidth = layer.paint['line-width'] / 2;
++    var inset = -1;
++    var offset = 0;
++    var shift = 0;
++
++    if (layer.paint['line-gap-width'] > 0) {
++        inset = layer.paint['line-gap-width'] / 2 + antialiasing * 0.5;
++        edgeWidth = layer.paint['line-width'];
++
++        // shift outer lines half a pixel towards the middle to eliminate the crack
++        offset = inset - antialiasing / 2;
+     }
+ 
+-    return glyphs;
+-};
++    var outset = offset + edgeWidth + antialiasing / 2 + shift;
++    var color = util.premultiply(layer.paint['line-color']);
+ 
+-GlyphAtlas.prototype.getRects = function() {
+-    var rects = {},
+-        split,
+-        name,
+-        id;
++    var tr = painter.transform;
+ 
+-    for (var key in this.ids) {
+-        split = key.split('#');
+-        name = split[0];
+-        id = split[1];
++    var antialiasingMatrix = mat2.create();
++    mat2.scale(antialiasingMatrix, antialiasingMatrix, [1, Math.cos(tr._pitch)]);
++    mat2.rotate(antialiasingMatrix, antialiasingMatrix, painter.transform.angle);
+ 
+-        if (!rects[name]) rects[name] = {};
+-        rects[name][id] = this.index[key];
+-    }
++    // calculate how much longer the real world distance is at the top of the screen
++    // than at the middle of the screen.
++    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
++    var x = tr.height / 2 * Math.tan(tr._pitch);
++    var extra = (topedgelength + x) / topedgelength - 1;
+ 
+-    return rects;
+-};
++    var dasharray = layer.paint['line-dasharray'];
++    var image = layer.paint['line-pattern'];
++    var program, posA, posB, imagePosA, imagePosB;
+ 
++    if (dasharray) {
++        program = painter.useProgram('linesdfpattern');
+ 
+-GlyphAtlas.prototype.addGlyph = function(id, name, glyph, buffer) {
+-    if (!glyph) {
+-        // console.warn('missing glyph', code, String.fromCharCode(code));
+-        return null;
+-    }
+-    var key = name + "#" + glyph.id;
++        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
++        gl.uniform1f(program.u_blur, blur);
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
+ 
+-    // The glyph is already in this texture.
+-    if (this.index[key]) {
+-        if (this.ids[key].indexOf(id) < 0) {
+-            this.ids[key].push(id);
+-        }
+-        return this.index[key];
+-    }
++        posA = painter.lineAtlas.getDash(dasharray.from, layer.layout['line-cap'] === 'round');
++        posB = painter.lineAtlas.getDash(dasharray.to, layer.layout['line-cap'] === 'round');
+ 
+-    // The glyph bitmap has zero width.
+-    if (!glyph.bitmap) {
+-        return null;
+-    }
++        gl.uniform1i(program.u_image, 0);
++        gl.activeTexture(gl.TEXTURE0);
++        painter.lineAtlas.bind(gl);
+ 
+-    var bufferedWidth = glyph.width + buffer * 2;
+-    var bufferedHeight = glyph.height + buffer * 2;
++        gl.uniform1f(program.u_tex_y_a, posA.y);
++        gl.uniform1f(program.u_tex_y_b, posB.y);
++        gl.uniform1f(program.u_mix, dasharray.t);
++        gl.uniform1f(program.u_extra, extra);
++        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
++        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
+ 
+-    // Add a 1px border around every image.
+-    var padding = 1;
+-    var packWidth = bufferedWidth + 2 * padding;
+-    var packHeight = bufferedHeight + 2 * padding;
++    } else if (image) {
++        imagePosA = painter.spriteAtlas.getPosition(image.from, true);
++        imagePosB = painter.spriteAtlas.getPosition(image.to, true);
++        if (!imagePosA || !imagePosB) return;
+ 
+-    // Increase to next number divisible by 4, but at least 1.
+-    // This is so we can scale down the texture coordinates and pack them
+-    // into 2 bytes rather than 4 bytes.
+-    packWidth += (4 - packWidth % 4);
+-    packHeight += (4 - packHeight % 4);
++        program = painter.useProgram('linepattern');
+ 
+-    var rect = this.bin.packOne(packWidth, packHeight);
+-    if (!rect) {
+-        this.resize();
+-        rect = this.bin.packOne(packWidth, packHeight);
+-    }
+-    if (!rect) {
+-        console.warn('glyph bitmap overflow');
+-        return null;
+-    }
++        gl.uniform1i(program.u_image, 0);
++        gl.activeTexture(gl.TEXTURE0);
++        painter.spriteAtlas.bind(gl, true);
+ 
+-    this.index[key] = rect;
+-    this.ids[key] = [id];
++        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
++        gl.uniform1f(program.u_blur, blur);
++        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
++        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
++        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
++        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
++        gl.uniform1f(program.u_fade, image.t);
++        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
++        gl.uniform1f(program.u_extra, extra);
++        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
++        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
+ 
+-    var target = this.data;
+-    var source = glyph.bitmap;
+-    for (var y = 0; y < bufferedHeight; y++) {
+-        var y1 = this.width * (rect.y + y + padding) + rect.x + padding;
+-        var y2 = bufferedWidth * y;
+-        for (var x = 0; x < bufferedWidth; x++) {
+-            target[y1 + x] = source[y2 + x];
+-        }
++    } else {
++        program = painter.useProgram('line');
++
++        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
++        gl.uniform1f(program.u_blur, blur);
++        gl.uniform1f(program.u_extra, extra);
++        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
++        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
+     }
+ 
+-    this.dirty = true;
++    for (var k = 0; k < coords.length; k++) {
++        var coord = coords[k];
++        var tile = source.getTile(coord);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bufferGroups = bucket.bufferGroups.line;
++        if (!bufferGroups) continue;
+ 
+-    return rect;
+-};
++        painter.enableTileClippingMask(coord);
+ 
+-GlyphAtlas.prototype.resize = function() {
+-    var origw = this.width,
+-        origh = this.height;
++        // set uniforms that are different for each tile
++        var posMatrix = painter.translatePosMatrix(coord.posMatrix, tile, layer.paint['line-translate'], layer.paint['line-translate-anchor']);
++        gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+ 
+-    // For now, don't grow the atlas beyond 1024x1024 because of how
+-    // texture coords pack into unsigned byte in symbol bucket.
+-    if (origw > 512 || origh > 512) return;
++        var ratio = 1 / pixelsToTileUnits(tile, 1, painter.transform.zoom);
+ 
+-    if (this.texture) {
+-        if (this.gl) {
+-            this.gl.deleteTexture(this.texture);
++        if (dasharray) {
++            var widthA = posA.width * dasharray.fromScale;
++            var widthB = posB.width * dasharray.toScale;
++            var scaleA = [1 / pixelsToTileUnits(tile, widthA, painter.transform.tileZoom), -posA.height / 2];
++            var scaleB = [1 / pixelsToTileUnits(tile, widthB, painter.transform.tileZoom), -posB.height / 2];
++            var gamma = painter.lineAtlas.width / (Math.min(widthA, widthB) * 256 * browser.devicePixelRatio) / 2;
++            gl.uniform1f(program.u_ratio, ratio);
++            gl.uniform2fv(program.u_patternscale_a, scaleA);
++            gl.uniform2fv(program.u_patternscale_b, scaleB);
++            gl.uniform1f(program.u_sdfgamma, gamma);
++
++        } else if (image) {
++            gl.uniform1f(program.u_ratio, ratio);
++            gl.uniform2fv(program.u_pattern_size_a, [
++                pixelsToTileUnits(tile, imagePosA.size[0] * image.fromScale, painter.transform.tileZoom),
++                imagePosB.size[1]
++            ]);
++            gl.uniform2fv(program.u_pattern_size_b, [
++                pixelsToTileUnits(tile, imagePosB.size[0] * image.toScale, painter.transform.tileZoom),
++                imagePosB.size[1]
++            ]);
++
++        } else {
++            gl.uniform1f(program.u_ratio, ratio);
++        }
++
++        for (var i = 0; i < bufferGroups.length; i++) {
++            var group = bufferGroups[i];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+         }
+-        this.texture = null;
+     }
+ 
+-    this.width *= 2;
+-    this.height *= 2;
+-    this.bin.resize(this.width, this.height);
+-
+-    var buf = new ArrayBuffer(this.width * this.height),
+-        src, dst;
+-    for (var i = 0; i < origh; i++) {
+-        src = new Uint8Array(this.data.buffer, origh * i, origw);
+-        dst = new Uint8Array(buf, origh * i * 2, origw);
+-        dst.set(src);
+-    }
+-    this.data = new Uint8Array(buf);
+ };
+ 
+-GlyphAtlas.prototype.bind = function(gl) {
+-    this.gl = gl;
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, this.width, this.height, 0, gl.ALPHA, gl.UNSIGNED_BYTE, null);
++},{"../source/pixels_to_tile_units":290,"../util/browser":348,"../util/util":362,"gl-matrix":154}],280:[function(require,module,exports){
++'use strict';
+ 
+-    } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-    }
+-};
++var util = require('../util/util');
++var StructArrayType = require('../util/struct_array');
+ 
+-GlyphAtlas.prototype.updateTexture = function(gl) {
+-    this.bind(gl);
+-    if (this.dirty) {
+-        gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.ALPHA, gl.UNSIGNED_BYTE, this.data);
+-        this.dirty = false;
+-    }
+-};
++module.exports = drawRaster;
+ 
+-},{"shelf-pack":406}],311:[function(require,module,exports){
+-'use strict';
++function drawRaster(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
+ 
+-var normalizeURL = require('../util/mapbox').normalizeGlyphsURL;
+-var getArrayBuffer = require('../util/ajax').getArrayBuffer;
+-var Glyphs = require('../util/glyphs');
+-var GlyphAtlas = require('../symbol/glyph_atlas');
+-var Protobuf = require('pbf');
++    var gl = painter.gl;
+ 
+-module.exports = GlyphSource;
++    gl.enable(gl.DEPTH_TEST);
++    painter.depthMask(true);
+ 
+-/**
+- * A glyph source has a URL from which to load new glyphs and manages
+- * GlyphAtlases in which to store glyphs used by the requested fontstacks
+- * and ranges.
+- *
+- * @param {string} url glyph template url
+- * @private
+- */
+-function GlyphSource(url) {
+-    this.url = url && normalizeURL(url);
+-    this.atlases = {};
+-    this.stacks = {};
+-    this.loading = {};
+-}
++    // Change depth function to prevent double drawing in areas where tiles overlap.
++    gl.depthFunc(gl.LESS);
+ 
+-GlyphSource.prototype.getSimpleGlyphs = function(fontstack, glyphIDs, uid, callback) {
+-    if (this.stacks[fontstack] === undefined) {
+-        this.stacks[fontstack] = {};
+-    }
+-    if (this.atlases[fontstack] === undefined) {
+-        this.atlases[fontstack] = new GlyphAtlas(128, 128);
+-    }
++    var minTileZ = coords.length && coords[0].z;
+ 
+-    var glyphs = {};
+-    var stack = this.stacks[fontstack];
+-    var atlas = this.atlases[fontstack];
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
++        // set the lower zoom level to sublayer 0, and higher zoom levels to higher sublayers
++        painter.setDepthSublayer(coord.z - minTileZ);
++        drawRasterTile(painter, source, layer, coord);
++    }
+ 
+-    // the number of pixels the sdf bitmaps are padded by
+-    var buffer = 3;
++    gl.depthFunc(gl.LEQUAL);
++}
+ 
+-    var missing = {};
+-    var remaining = 0;
+-    var range;
++drawRaster.RasterBoundsArray = new StructArrayType({
++    members: [
++        { name: 'a_pos', type: 'Int16', components: 2 },
++        { name: 'a_texture_pos', type: 'Int16', components: 2 }
++    ]
++});
+ 
+-    for (var i = 0; i < glyphIDs.length; i++) {
+-        var glyphID = glyphIDs[i];
+-        range = Math.floor(glyphID / 256);
++function drawRasterTile(painter, source, layer, coord) {
+ 
+-        if (stack[range]) {
+-            var glyph = stack[range].glyphs[glyphID];
+-            var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
+-            if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
+-        } else {
+-            if (missing[range] === undefined) {
+-                missing[range] = [];
+-                remaining++;
+-            }
+-            missing[range].push(glyphID);
+-        }
+-    }
++    var gl = painter.gl;
+ 
+-    if (!remaining) callback(undefined, glyphs, fontstack);
++    gl.disable(gl.STENCIL_TEST);
+ 
+-    var onRangeLoaded = function(err, range, data) {
+-        // TODO not be silent about errors
+-        if (!err) {
+-            var stack = this.stacks[fontstack][range] = data.stacks[0];
+-            for (var i = 0; i < missing[range].length; i++) {
+-                var glyphID = missing[range][i];
+-                var glyph = stack.glyphs[glyphID];
+-                var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
+-                if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
+-            }
+-        }
+-        remaining--;
+-        if (!remaining) callback(undefined, glyphs, fontstack);
+-    }.bind(this);
++    var tile = source.getTile(coord);
++    var posMatrix = painter.transform.calculatePosMatrix(coord, source.maxzoom);
+ 
+-    for (var r in missing) {
+-        this.loadRange(fontstack, r, onRangeLoaded);
+-    }
+-};
++    var program = painter.useProgram('raster');
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+ 
+-// A simplified representation of the glyph containing only the properties needed for shaping.
+-function SimpleGlyph(glyph, rect, buffer) {
+-    var padding = 1;
+-    this.advance = glyph.advance;
+-    this.left = glyph.left - buffer - padding;
+-    this.top = glyph.top + buffer + padding;
+-    this.rect = rect;
+-}
++    // color parameters
++    gl.uniform1f(program.u_brightness_low, layer.paint['raster-brightness-min']);
++    gl.uniform1f(program.u_brightness_high, layer.paint['raster-brightness-max']);
++    gl.uniform1f(program.u_saturation_factor, saturationFactor(layer.paint['raster-saturation']));
++    gl.uniform1f(program.u_contrast_factor, contrastFactor(layer.paint['raster-contrast']));
++    gl.uniform3fv(program.u_spin_weights, spinWeights(layer.paint['raster-hue-rotate']));
+ 
+-GlyphSource.prototype.loadRange = function(fontstack, range, callback) {
+-    if (range * 256 > 65535) return callback('glyphs > 65535 not supported');
++    var parentTile = tile.source && tile.source._pyramid.findLoadedParent(coord, 0, {}),
++        opacities = getOpacities(tile, parentTile, layer, painter.transform);
+ 
+-    if (this.loading[fontstack] === undefined) {
+-        this.loading[fontstack] = {};
+-    }
+-    var loading = this.loading[fontstack];
++    var parentScaleBy, parentTL;
+ 
+-    if (loading[range]) {
+-        loading[range].push(callback);
+-    } else {
+-        loading[range] = [callback];
++    gl.activeTexture(gl.TEXTURE0);
++    gl.bindTexture(gl.TEXTURE_2D, tile.texture);
+ 
+-        var rangeName = (range * 256) + '-' + (range * 256 + 255);
+-        var url = glyphUrl(fontstack, rangeName, this.url);
++    if (parentTile) {
++        gl.activeTexture(gl.TEXTURE1);
++        gl.bindTexture(gl.TEXTURE_2D, parentTile.texture);
+ 
+-        getArrayBuffer(url, function(err, data) {
+-            var glyphs = !err && new Glyphs(new Protobuf(new Uint8Array(data)));
+-            for (var i = 0; i < loading[range].length; i++) {
+-                loading[range][i](err, range, glyphs);
+-            }
+-            delete loading[range];
+-        });
++        parentScaleBy = Math.pow(2, parentTile.coord.z - tile.coord.z);
++        parentTL = [tile.coord.x * parentScaleBy % 1, tile.coord.y * parentScaleBy % 1];
++    } else {
++        opacities[1] = 0;
+     }
+-};
+-
+-GlyphSource.prototype.getGlyphAtlas = function(fontstack) {
+-    return this.atlases[fontstack];
+-};
+ 
+-/**
+- * Use CNAME sharding to load a specific glyph range over a randomized
+- * but consistent subdomain.
+- * @param {string} fontstack comma-joined fonts
+- * @param {string} range comma-joined range
+- * @param {url} url templated url
+- * @param {string} [subdomains=abc] subdomains as a string where each letter is one.
+- * @returns {string} a url to load that section of glyphs
+- * @private
+- */
+-function glyphUrl(fontstack, range, url, subdomains) {
+-    subdomains = subdomains || 'abc';
++    // cross-fade parameters
++    gl.uniform2fv(program.u_tl_parent, parentTL || [0, 0]);
++    gl.uniform1f(program.u_scale_parent, parentScaleBy || 1);
++    gl.uniform1f(program.u_buffer_scale, 1);
++    gl.uniform1f(program.u_opacity0, opacities[0]);
++    gl.uniform1f(program.u_opacity1, opacities[1]);
++    gl.uniform1i(program.u_image0, 0);
++    gl.uniform1i(program.u_image1, 1);
+ 
+-    return url
+-        .replace('{s}', subdomains[fontstack.length % subdomains.length])
+-        .replace('{fontstack}', fontstack)
+-        .replace('{range}', range);
++    var buffer = tile.boundsBuffer || painter.rasterBoundsBuffer;
++    var vao = tile.boundsVAO || painter.rasterBoundsVAO;
++    vao.bind(gl, program, buffer);
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, buffer.length);
+ }
+ 
+-},{"../symbol/glyph_atlas":310,"../util/ajax":334,"../util/glyphs":342,"../util/mapbox":346,"pbf":402}],312:[function(require,module,exports){
+-'use strict';
++function spinWeights(angle) {
++    angle *= Math.PI / 180;
++    var s = Math.sin(angle);
++    var c = Math.cos(angle);
++    return [
++        (2 * c + 1) / 3,
++        (-Math.sqrt(3) * s - c + 1) / 3,
++        (Math.sqrt(3) * s - c + 1) / 3
++    ];
++}
+ 
+-module.exports = function (features, textFeatures, geometries) {
++function contrastFactor(contrast) {
++    return contrast > 0 ?
++        1 / (1 - contrast) :
++        1 + contrast;
++}
+ 
+-    var leftIndex = {},
+-        rightIndex = {},
+-        mergedFeatures = [],
+-        mergedGeom = [],
+-        mergedTexts = [],
+-        mergedIndex = 0,
+-        k;
++function saturationFactor(saturation) {
++    return saturation > 0 ?
++        1 - 1 / (1.001 - saturation) :
++        -saturation;
++}
+ 
+-    function add(k) {
+-        mergedFeatures.push(features[k]);
+-        mergedGeom.push(geometries[k]);
+-        mergedTexts.push(textFeatures[k]);
+-        mergedIndex++;
+-    }
++function getOpacities(tile, parentTile, layer, transform) {
++    var opacity = [1, 0];
++    var fadeDuration = layer.paint['raster-fade-duration'];
+ 
+-    function mergeFromRight(leftKey, rightKey, geom) {
+-        var i = rightIndex[leftKey];
+-        delete rightIndex[leftKey];
+-        rightIndex[rightKey] = i;
++    if (tile.source && fadeDuration > 0) {
++        var now = new Date().getTime();
+ 
+-        mergedGeom[i][0].pop();
+-        mergedGeom[i][0] = mergedGeom[i][0].concat(geom[0]);
+-        return i;
+-    }
++        var sinceTile = (now - tile.timeAdded) / fadeDuration;
++        var sinceParent = parentTile ? (now - parentTile.timeAdded) / fadeDuration : -1;
+ 
+-    function mergeFromLeft(leftKey, rightKey, geom) {
+-        var i = leftIndex[rightKey];
+-        delete leftIndex[rightKey];
+-        leftIndex[leftKey] = i;
++        var idealZ = tile.source._pyramid.coveringZoomLevel(transform);
++        var parentFurther = parentTile ? Math.abs(parentTile.coord.z - idealZ) > Math.abs(tile.coord.z - idealZ) : false;
+ 
+-        mergedGeom[i][0].shift();
+-        mergedGeom[i][0] = geom[0].concat(mergedGeom[i][0]);
+-        return i;
++        if (!parentTile || parentFurther) {
++            // if no parent or parent is older
++            opacity[0] = util.clamp(sinceTile, 0, 1);
++            opacity[1] = 1 - opacity[0];
++        } else {
++            // parent is younger, zooming out
++            opacity[0] = util.clamp(1 - sinceParent, 0, 1);
++            opacity[1] = 1 - opacity[0];
++        }
+     }
+ 
+-    function getKey(text, geom, onRight) {
+-        var point = onRight ? geom[0][geom[0].length - 1] : geom[0][0];
+-        return text + ':' + point.x + ':' + point.y;
+-    }
++    var op = layer.paint['raster-opacity'];
++    opacity[0] *= op;
++    opacity[1] *= op;
+ 
+-    for (k = 0; k < features.length; k++) {
+-        var geom = geometries[k],
+-            text = textFeatures[k];
++    return opacity;
++}
+ 
+-        if (!text) {
+-            add(k);
+-            continue;
+-        }
++},{"../util/struct_array":360,"../util/util":362}],281:[function(require,module,exports){
++'use strict';
+ 
+-        var leftKey = getKey(text, geom),
+-            rightKey = getKey(text, geom, true);
++var browser = require('../util/browser');
++var drawCollisionDebug = require('./draw_collision_debug');
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-        if ((leftKey in rightIndex) && (rightKey in leftIndex) && (rightIndex[leftKey] !== leftIndex[rightKey])) {
+-            // found lines with the same text adjacent to both ends of the current line, merge all three
+-            var j = mergeFromLeft(leftKey, rightKey, geom);
+-            var i = mergeFromRight(leftKey, rightKey, mergedGeom[j]);
+ 
+-            delete leftIndex[leftKey];
+-            delete rightIndex[rightKey];
++module.exports = drawSymbols;
+ 
+-            rightIndex[getKey(text, mergedGeom[i], true)] = i;
+-            mergedGeom[j] = null;
++function drawSymbols(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
+ 
+-        } else if (leftKey in rightIndex) {
+-            // found mergeable line adjacent to the start of the current line, merge
+-            mergeFromRight(leftKey, rightKey, geom);
++    var drawAcrossEdges = !(layer.layout['text-allow-overlap'] || layer.layout['icon-allow-overlap'] ||
++        layer.layout['text-ignore-placement'] || layer.layout['icon-ignore-placement']);
+ 
+-        } else if (rightKey in leftIndex) {
+-            // found mergeable line adjacent to the end of the current line, merge
+-            mergeFromLeft(leftKey, rightKey, geom);
++    var gl = painter.gl;
+ 
+-        } else {
+-            // no adjacent lines, add as a new item
+-            add(k);
+-            leftIndex[leftKey] = mergedIndex - 1;
+-            rightIndex[rightKey] = mergedIndex - 1;
+-        }
++    // Disable the stencil test so that labels aren't clipped to tile boundaries.
++    //
++    // Layers with features that may be drawn overlapping aren't clipped. These
++    // layers are sorted in the y direction, and to draw the correct ordering near
++    // tile edges the icons are included in both tiles and clipped when drawing.
++    if (drawAcrossEdges) {
++        gl.disable(gl.STENCIL_TEST);
++    } else {
++        gl.enable(gl.STENCIL_TEST);
+     }
+ 
+-    return {
+-        features: mergedFeatures,
+-        textFeatures: mergedTexts,
+-        geometries: mergedGeom
+-    };
+-};
+-
+-},{}],313:[function(require,module,exports){
+-'use strict';
++    painter.setDepthSublayer(0);
++    painter.depthMask(false);
++    gl.disable(gl.DEPTH_TEST);
+ 
+-var Point = require('point-geometry');
++    drawLayerSymbols(painter, source, layer, coords, false,
++            layer.paint['icon-translate'],
++            layer.paint['icon-translate-anchor'],
++            layer.layout['icon-rotation-alignment'],
++            layer.layout['icon-size'],
++            layer.paint['icon-halo-width'],
++            layer.paint['icon-halo-color'],
++            layer.paint['icon-halo-blur'],
++            layer.paint['icon-opacity'],
++            layer.paint['icon-color']);
+ 
+-module.exports = {
+-    getIconQuads: getIconQuads,
+-    getGlyphQuads: getGlyphQuads
+-};
++    drawLayerSymbols(painter, source, layer, coords, true,
++            layer.paint['text-translate'],
++            layer.paint['text-translate-anchor'],
++            layer.layout['text-rotation-alignment'],
++            layer.layout['text-size'],
++            layer.paint['text-halo-width'],
++            layer.paint['text-halo-color'],
++            layer.paint['text-halo-blur'],
++            layer.paint['text-opacity'],
++            layer.paint['text-color']);
+ 
+-var minScale = 0.5; // underscale by 1 zoom level
++    gl.enable(gl.DEPTH_TEST);
+ 
+-/**
+- * A textured quad for rendering a single icon or glyph.
+- *
+- * The zoom range the glyph can be shown is defined by minScale and maxScale.
+- *
+- * @param {Point} anchorPoint the point the symbol is anchored around
+- * @param {Point} tl The offset of the top left corner from the anchor.
+- * @param {Point} tr The offset of the top right corner from the anchor.
+- * @param {Point} bl The offset of the bottom left corner from the anchor.
+- * @param {Point} br The offset of the bottom right corner from the anchor.
+- * @param {Object} tex The texture coordinates.
+- * @param {number} angle The angle of the label at it's center, not the angle of this quad.
+- * @param {number} minScale The minimum scale, relative to the tile's intended scale, that the glyph can be shown at.
+- * @param {number} maxScale The maximum scale, relative to the tile's intended scale, that the glyph can be shown at.
+- *
+- * @class SymbolQuad
+- * @private
+- */
+-function SymbolQuad(anchorPoint, tl, tr, bl, br, tex, angle, minScale, maxScale) {
+-    this.anchorPoint = anchorPoint;
+-    this.tl = tl;
+-    this.tr = tr;
+-    this.bl = bl;
+-    this.br = br;
+-    this.tex = tex;
+-    this.angle = angle;
+-    this.minScale = minScale;
+-    this.maxScale = maxScale;
++    drawCollisionDebug(painter, source, layer, coords);
+ }
+ 
+-/**
+- * Create the quads used for rendering an icon.
+- *
+- * @param {Anchor} anchor
+- * @param {PositionedIcon} shapedIcon
+- * @param {number} boxScale A magic number for converting glyph metric units to geometry units.
+- * @param {Array<Array<Point>>} line
+- * @param {LayoutProperties} layout
+- * @param {boolean} alongLine Whether the icon should be placed along the line.
+- * @returns {Array<SymbolQuad>}
+- * @private
+- */
+-function getIconQuads(anchor, shapedIcon, boxScale, line, layout, alongLine) {
++function drawLayerSymbols(painter, source, layer, coords, isText,
++        translate,
++        translateAnchor,
++        rotationAlignment,
++        size,
++        haloWidth,
++        haloColor,
++        haloBlur,
++        opacity,
++        color) {
+ 
+-    var rect = shapedIcon.image.rect;
++    haloColor = util.premultiply(haloColor);
++    color = util.premultiply(color);
+ 
+-    var border = 1;
+-    var left = shapedIcon.left - border;
+-    var right = left + rect.w / shapedIcon.image.pixelRatio;
+-    var top = shapedIcon.top - border;
+-    var bottom = top + rect.h / shapedIcon.image.pixelRatio;
+-    var tl = new Point(left, top);
+-    var tr = new Point(right, top);
+-    var br = new Point(right, bottom);
+-    var bl = new Point(left, bottom);
++    for (var j = 0; j < coords.length; j++) {
++        var tile = source.getTile(coords[j]);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bothBufferGroups = bucket.bufferGroups;
++        var bufferGroups = isText ? bothBufferGroups.glyph : bothBufferGroups.icon;
++        if (!bufferGroups.length) continue;
+ 
+-    var angle = layout['icon-rotate'] * Math.PI / 180;
+-    if (alongLine) {
+-        var prev = line[anchor.segment];
+-        if (anchor.y === prev.y && anchor.x === prev.x && anchor.segment + 1 < line.length) {
+-            var next = line[anchor.segment + 1];
+-            angle += Math.atan2(anchor.y - next.y, anchor.x - next.x) + Math.PI;
+-        } else {
+-            angle += Math.atan2(anchor.y - prev.y, anchor.x - prev.x);
+-        }
++        painter.enableTileClippingMask(coords[j]);
++        drawSymbol(painter, layer, coords[j].posMatrix, tile, bucket, bufferGroups, isText,
++                isText || bucket.sdfIcons, !isText && bucket.iconsNeedLinear,
++                isText ? bucket.adjustedTextSize : bucket.adjustedIconSize, bucket.fontstack,
++                translate,
++                translateAnchor,
++                rotationAlignment,
++                size,
++                haloWidth,
++                haloColor,
++                haloBlur,
++                opacity,
++                color);
++    }
++}
++
++function drawSymbol(painter, layer, posMatrix, tile, bucket, bufferGroups, isText, sdf, iconsNeedLinear, adjustedSize, fontstack,
++        translate,
++        translateAnchor,
++        rotationAlignment,
++        size,
++        haloWidth,
++        haloColor,
++        haloBlur,
++        opacity,
++        color) {
++    var gl = painter.gl;
++    var tr = painter.transform;
++    var alignedWithMap = rotationAlignment === 'map';
++
++    var defaultSize = isText ? 24 : 1;
++    var fontScale = size / defaultSize;
++
++    var extrudeScale, s, gammaScale;
++    if (alignedWithMap) {
++        s = pixelsToTileUnits(tile, 1, painter.transform.zoom) * fontScale;
++        gammaScale = 1 / Math.cos(tr._pitch);
++        extrudeScale = [s, s];
++    } else {
++        s = painter.transform.altitude * fontScale;
++        gammaScale = 1;
++        extrudeScale = [ tr.pixelsToGLUnits[0] * s, tr.pixelsToGLUnits[1] * s];
+     }
+ 
+-    if (angle) {
+-        var sin = Math.sin(angle),
+-            cos = Math.cos(angle),
+-            matrix = [cos, -sin, sin, cos];
++    // calculate how much longer the real world distance is at the top of the screen
++    // than at the middle of the screen.
++    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
++    var x = tr.height / 2 * Math.tan(tr._pitch);
++    var extra = (topedgelength + x) / topedgelength - 1;
++
++    if (!isText && !painter.style.sprite.loaded())
++        return;
++
++    var program = painter.useProgram(sdf ? 'sdf' : 'icon');
++    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(posMatrix, tile, translate, translateAnchor));
++    gl.uniform1i(program.u_skewed, alignedWithMap);
++    gl.uniform1f(program.u_extra, extra);
++    gl.uniform2fv(program.u_extrude_scale, extrudeScale);
++
++    gl.activeTexture(gl.TEXTURE0);
++    gl.uniform1i(program.u_texture, 0);
+ 
+-        tl = tl.matMult(matrix);
+-        tr = tr.matMult(matrix);
+-        bl = bl.matMult(matrix);
+-        br = br.matMult(matrix);
++    if (isText) {
++        // use the fonstack used when parsing the tile, not the fontstack
++        // at the current zoom level (layout['text-font']).
++        var glyphAtlas = fontstack && painter.glyphSource.getGlyphAtlas(fontstack);
++        if (!glyphAtlas) return;
++
++        glyphAtlas.updateTexture(gl);
++        gl.uniform2f(program.u_texsize, glyphAtlas.width / 4, glyphAtlas.height / 4);
++    } else {
++        var mapMoving = painter.options.rotating || painter.options.zooming;
++        var iconScaled = fontScale !== 1 || browser.devicePixelRatio !== painter.spriteAtlas.pixelRatio || iconsNeedLinear;
++        var iconTransformed = alignedWithMap || painter.transform.pitch;
++        painter.spriteAtlas.bind(gl, sdf || mapMoving || iconScaled || iconTransformed);
++        gl.uniform2f(program.u_texsize, painter.spriteAtlas.width / 4, painter.spriteAtlas.height / 4);
+     }
+ 
+-    return [new SymbolQuad(new Point(anchor.x, anchor.y), tl, tr, bl, br, shapedIcon.image.rect, 0, minScale, Infinity)];
+-}
++    // adjust min/max zooms for variable font sizes
++    var zoomAdjust = Math.log(size / adjustedSize) / Math.LN2 || 0;
++    gl.uniform1f(program.u_zoom, (painter.transform.zoom - zoomAdjust) * 10); // current zoom level
+ 
+-/**
+- * Create the quads used for rendering a text label.
+- *
+- * @param {Anchor} anchor
+- * @param {Shaping} shaping
+- * @param {number} boxScale A magic number for converting from glyph metric units to geometry units.
+- * @param {Array<Array<Point>>} line
+- * @param {LayoutProperties} layout
+- * @param {boolean} alongLine Whether the label should be placed along the line.
+- * @returns {Array<SymbolQuad>}
+- * @private
+- */
+-function getGlyphQuads(anchor, shaping, boxScale, line, layout, alongLine) {
++    gl.activeTexture(gl.TEXTURE1);
++    painter.frameHistory.bind(gl);
++    gl.uniform1i(program.u_fadetexture, 1);
+ 
+-    var textRotate = layout['text-rotate'] * Math.PI / 180;
+-    var keepUpright = layout['text-keep-upright'];
++    var group;
+ 
+-    var positionedGlyphs = shaping.positionedGlyphs;
+-    var quads = [];
++    if (sdf) {
++        var sdfPx = 8;
++        var blurOffset = 1.19;
++        var haloOffset = 6;
++        var gamma = 0.105 * defaultSize / size / browser.devicePixelRatio;
+ 
+-    for (var k = 0; k < positionedGlyphs.length; k++) {
+-        var positionedGlyph = positionedGlyphs[k];
+-        var glyph = positionedGlyph.glyph;
+-        var rect = glyph.rect;
++        if (haloWidth) {
++            // Draw halo underneath the text.
++            gl.uniform1f(program.u_gamma, (haloBlur * blurOffset / fontScale / sdfPx + gamma) * gammaScale);
++            gl.uniform4fv(program.u_color, haloColor);
++            gl.uniform1f(program.u_opacity, opacity);
++            gl.uniform1f(program.u_buffer, (haloOffset - haloWidth / fontScale) / sdfPx);
+ 
+-        if (!rect) continue;
++            for (var j = 0; j < bufferGroups.length; j++) {
++                group = bufferGroups[j];
++                group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++                gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++            }
++        }
+ 
+-        var centerX = (positionedGlyph.x + glyph.advance / 2) * boxScale;
++        gl.uniform1f(program.u_gamma, gamma * gammaScale);
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, opacity);
++        gl.uniform1f(program.u_buffer, (256 - 64) / 256);
+ 
+-        var glyphInstances;
+-        var labelMinScale = minScale;
+-        if (alongLine) {
+-            glyphInstances = [];
+-            labelMinScale = getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, true);
+-            if (keepUpright) {
+-                labelMinScale = Math.min(labelMinScale, getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, false));
+-            }
++        for (var i = 0; i < bufferGroups.length; i++) {
++            group = bufferGroups[i];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++        }
+ 
+-        } else {
+-            glyphInstances = [{
+-                anchorPoint: new Point(anchor.x, anchor.y),
+-                offset: 0,
+-                angle: 0,
+-                maxScale: Infinity,
+-                minScale: minScale
+-            }];
++    } else {
++        gl.uniform1f(program.u_opacity, opacity);
++        for (var k = 0; k < bufferGroups.length; k++) {
++            group = bufferGroups[k];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+         }
++    }
++}
+ 
+-        var x1 = positionedGlyph.x + glyph.left,
+-            y1 = positionedGlyph.y - glyph.top,
+-            x2 = x1 + rect.w,
+-            y2 = y1 + rect.h,
++},{"../source/pixels_to_tile_units":290,"../util/browser":348,"../util/util":362,"./draw_collision_debug":276}],282:[function(require,module,exports){
++'use strict';
+ 
+-            otl = new Point(x1, y1),
+-            otr = new Point(x2, y1),
+-            obl = new Point(x1, y2),
+-            obr = new Point(x2, y2);
++module.exports = FrameHistory;
+ 
+-        for (var i = 0; i < glyphInstances.length; i++) {
++function FrameHistory() {
++    this.changeTimes = new Float64Array(256);
++    this.changeOpacities = new Uint8Array(256);
++    this.opacities = new Uint8ClampedArray(256);
++    this.array = new Uint8Array(this.opacities.buffer);
+ 
+-            var instance = glyphInstances[i],
+-                tl = otl,
+-                tr = otr,
+-                bl = obl,
+-                br = obr,
+-                angle = instance.angle + textRotate;
++    this.fadeDuration = 300;
++    this.previousZoom = 0;
++    this.firstFrame = true;
++}
+ 
+-            if (angle) {
+-                var sin = Math.sin(angle),
+-                    cos = Math.cos(angle),
+-                    matrix = [cos, -sin, sin, cos];
++FrameHistory.prototype.record = function(zoom) {
++    var now = Date.now();
+ 
+-                tl = tl.matMult(matrix);
+-                tr = tr.matMult(matrix);
+-                bl = bl.matMult(matrix);
+-                br = br.matMult(matrix);
+-            }
++    if (this.firstFrame) {
++        now = 0;
++        this.firstFrame = false;
++    }
+ 
+-            // Prevent label from extending past the end of the line
+-            var glyphMinScale = Math.max(instance.minScale, labelMinScale);
++    zoom = Math.floor(zoom * 10);
+ 
+-            var glyphAngle = (anchor.angle + textRotate + instance.offset + 2 * Math.PI) % (2 * Math.PI);
+-            quads.push(new SymbolQuad(instance.anchorPoint, tl, tr, bl, br, rect, glyphAngle, glyphMinScale, instance.maxScale));
++    var z;
++    if (zoom < this.previousZoom) {
++        for (z = zoom + 1; z <= this.previousZoom; z++) {
++            this.changeTimes[z] = now;
++            this.changeOpacities[z] = this.opacities[z];
++        }
++    } else {
++        for (z = zoom; z > this.previousZoom; z--) {
++            this.changeTimes[z] = now;
++            this.changeOpacities[z] = this.opacities[z];
++        }
++    }
+ 
++    for (z = 0; z < 256; z++) {
++        var timeSince = now - this.changeTimes[z];
++        var opacityChange = timeSince / this.fadeDuration * 255;
++        if (z <= zoom) {
++            this.opacities[z] = this.changeOpacities[z] + opacityChange;
++        } else {
++            this.opacities[z] = this.changeOpacities[z] - opacityChange;
+         }
+     }
+ 
+-    return quads;
+-}
++    this.changed = true;
++    this.previousZoom = zoom;
++};
++
++FrameHistory.prototype.bind = function(gl) {
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
++        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, 256, 1, 0, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
++
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        if (this.changed) {
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 256, 1, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
++            this.changed = false;
++        }
++    }
++};
++
++},{}],283:[function(require,module,exports){
++'use strict';
++
++module.exports = LineAtlas;
+ 
+ /**
+- * We can only render glyph quads that slide along a straight line. To draw
+- * curved lines we need an instance of a glyph for each segment it appears on.
+- * This creates all the instances of a glyph that are necessary to render a label.
+- *
+- * We need a
+- * @param {Array<Object>} glyphInstances An empty array that glyphInstances are added to.
+- * @param {Anchor} anchor
+- * @param {number} offset The glyph's offset from the center of the label.
+- * @param {Array<Point>} line
+- * @param {number} segment The index of the segment of the line on which the anchor exists.
+- * @param {boolean} forward If true get the glyphs that come later on the line, otherwise get the glyphs that come earlier.
++ * A LineAtlas lets us reuse rendered dashed lines
++ * by writing many of them to a texture and then fetching their positions
++ * using .getDash.
+  *
+- * @returns {Array<Object>} glyphInstances
++ * @param {number} width
++ * @param {number} height
+  * @private
+  */
+-function getSegmentGlyphs(glyphs, anchor, offset, line, segment, forward) {
+-    var upsideDown = !forward;
+-
+-    if (offset < 0) forward = !forward;
++function LineAtlas(width, height) {
++    this.width = width;
++    this.height = height;
++    this.nextRow = 0;
+ 
+-    if (forward) segment++;
++    this.bytes = 4;
++    this.data = new Uint8Array(this.width * this.height * this.bytes);
+ 
+-    var newAnchorPoint = new Point(anchor.x, anchor.y);
+-    var end = line[segment];
+-    var prevScale = Infinity;
++    this.positions = {};
++}
+ 
+-    offset = Math.abs(offset);
++LineAtlas.prototype.setSprite = function(sprite) {
++    this.sprite = sprite;
++};
+ 
+-    var placementScale = minScale;
++/**
++ * Get or create a dash line pattern.
++ *
++ * @param {Array<number>} dasharray
++ * @param {boolean} round whether to add circle caps in between dash segments
++ * @returns {Object} position of dash texture in { y, height, width }
++ * @private
++ */
++LineAtlas.prototype.getDash = function(dasharray, round) {
++    var key = dasharray.join(",") + round;
+ 
+-    while (true) {
+-        var distance = newAnchorPoint.dist(end);
+-        var scale = offset / distance;
++    if (!this.positions[key]) {
++        this.positions[key] = this.addDash(dasharray, round);
++    }
++    return this.positions[key];
++};
+ 
+-        // Get the angle of the line segment
+-        var angle = Math.atan2(end.y - newAnchorPoint.y, end.x - newAnchorPoint.x);
+-        if (!forward) angle += Math.PI;
+-        if (upsideDown) angle += Math.PI;
++LineAtlas.prototype.addDash = function(dasharray, round) {
+ 
+-        glyphs.push({
+-            anchorPoint: newAnchorPoint,
+-            offset: upsideDown ? Math.PI : 0,
+-            minScale: scale,
+-            maxScale: prevScale,
+-            angle: (angle + 2 * Math.PI) % (2 * Math.PI)
+-        });
++    var n = round ? 7 : 0;
++    var height = 2 * n + 1;
++    var offset = 128;
+ 
+-        if (scale <= placementScale) break;
++    if (this.nextRow + height > this.height) {
++        console.warn('LineAtlas out of space');
++        return null;
++    }
+ 
+-        newAnchorPoint = end;
++    var length = 0;
++    for (var i = 0; i < dasharray.length; i++) {
++        length += dasharray[i];
++    }
+ 
+-        // skip duplicate nodes
+-        while (newAnchorPoint.equals(end)) {
+-            segment += forward ? 1 : -1;
+-            end = line[segment];
+-            if (!end) {
+-                return scale;
+-            }
+-        }
++    var stretch = this.width / length;
++    var halfWidth = stretch / 2;
+ 
+-        var unit = end.sub(newAnchorPoint)._unit();
+-        newAnchorPoint = newAnchorPoint.sub(unit._mult(distance));
++    // If dasharray has an odd length, both the first and last parts
++    // are dashes and should be joined seamlessly.
++    var oddLength = dasharray.length % 2 === 1;
+ 
+-        prevScale = scale;
+-    }
++    for (var y = -n; y <= n; y++) {
++        var row = this.nextRow + n + y;
++        var index = this.width * row;
+ 
+-    return placementScale;
+-}
++        var left = oddLength ? -dasharray[dasharray.length - 1] : 0;
++        var right = dasharray[0];
++        var partIndex = 1;
+ 
+-},{"point-geometry":404}],314:[function(require,module,exports){
+-'use strict';
++        for (var x = 0; x < this.width; x++) {
+ 
+-var resolveTokens = require('../util/token');
++            while (right < x / stretch) {
++                left = right;
++                right = right + dasharray[partIndex];
+ 
+-module.exports = resolveText;
++                if (oddLength && partIndex === dasharray.length - 1) {
++                    right += dasharray[0];
++                }
+ 
+-/**
+- * For an array of features determine what glyphs need to be loaded
+- * and apply any text preprocessing. The remaining users of text should
+- * use the `textFeatures` key returned by this function rather than accessing
+- * feature text directly.
+- * @private
+- */
+-function resolveText(features, layoutProperties, codepoints) {
+-    var textFeatures = [];
++                partIndex++;
++            }
+ 
+-    for (var i = 0, fl = features.length; i < fl; i++) {
+-        var text = resolveTokens(features[i].properties, layoutProperties['text-field']);
+-        if (!text) {
+-            textFeatures[i] = null;
+-            continue;
+-        }
+-        text = text.toString();
++            var distLeft = Math.abs(x - left * stretch);
++            var distRight = Math.abs(x - right * stretch);
++            var dist = Math.min(distLeft, distRight);
++            var inside = (partIndex % 2) === 1;
++            var signedDistance;
+ 
+-        var transform = layoutProperties['text-transform'];
+-        if (transform === 'uppercase') {
+-            text = text.toLocaleUpperCase();
+-        } else if (transform === 'lowercase') {
+-            text = text.toLocaleLowerCase();
+-        }
++            if (round) {
++                // Add circle caps
++                var distMiddle = n ? y / n * (halfWidth + 1) : 0;
++                if (inside) {
++                    var distEdge = halfWidth - Math.abs(distMiddle);
++                    signedDistance = Math.sqrt(dist * dist + distEdge * distEdge);
++                } else {
++                    signedDistance = halfWidth - Math.sqrt(dist * dist + distMiddle * distMiddle);
++                }
++            } else {
++                signedDistance = (inside ? 1 : -1) * dist;
++            }
+ 
+-        for (var j = 0; j < text.length; j++) {
+-            codepoints[text.charCodeAt(j)] = true;
++            this.data[3 + (index + x) * 4] = Math.max(0, Math.min(255, signedDistance + offset));
+         }
+-
+-        // Track indexes of features with text.
+-        textFeatures[i] = text;
+     }
+ 
+-    return textFeatures;
+-}
++    var pos = {
++        y: (this.nextRow + n + 0.5) / this.height,
++        height: 2 * n / this.height,
++        width: length
++    };
+ 
+-},{"../util/token":348}],315:[function(require,module,exports){
+-'use strict';
++    this.nextRow += height;
++    this.dirty = true;
+ 
+-module.exports = {
+-    shapeText: shapeText,
+-    shapeIcon: shapeIcon
++    return pos;
+ };
+ 
++LineAtlas.prototype.bind = function(gl) {
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, this.width, this.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
+ 
+-// The position of a glyph relative to the text's anchor point.
+-function PositionedGlyph(codePoint, x, y, glyph) {
+-    this.codePoint = codePoint;
+-    this.x = x;
+-    this.y = y;
+-    this.glyph = glyph;
+-}
+-
+-// A collection of positioned glyphs and some metadata
+-function Shaping(positionedGlyphs, text, top, bottom, left, right) {
+-    this.positionedGlyphs = positionedGlyphs;
+-    this.text = text;
+-    this.top = top;
+-    this.bottom = bottom;
+-    this.left = left;
+-    this.right = right;
+-}
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+ 
+-function shapeText(text, glyphs, maxWidth, lineHeight, horizontalAlign, verticalAlign, justify, spacing, translate) {
++        if (this.dirty) {
++            this.dirty = false;
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
++        }
++    }
++};
+ 
+-    var positionedGlyphs = [];
+-    var shaping = new Shaping(positionedGlyphs, text, translate[1], translate[1], translate[0], translate[0]);
++},{}],284:[function(require,module,exports){
++'use strict';
+ 
+-    // the y offset *should* be part of the font metadata
+-    var yOffset = -17;
++var browser = require('../util/browser');
++var mat4 = require('gl-matrix').mat4;
++var FrameHistory = require('./frame_history');
++var TilePyramid = require('../source/tile_pyramid');
++var EXTENT = require('../data/bucket').EXTENT;
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++var util = require('../util/util');
++var StructArrayType = require('../util/struct_array');
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('./vertex_array_object');
++var RasterBoundsArray = require('./draw_raster').RasterBoundsArray;
+ 
+-    var x = 0;
+-    var y = yOffset;
++module.exports = Painter;
+ 
+-    for (var i = 0; i < text.length; i++) {
+-        var codePoint = text.charCodeAt(i);
+-        var glyph = glyphs[codePoint];
++/**
++ * Initialize a new painter object.
++ *
++ * @param {Canvas} gl an experimental-webgl drawing context
++ * @private
++ */
++function Painter(gl, transform) {
++    this.gl = gl;
++    this.transform = transform;
+ 
+-        if (!glyph) continue;
++    this.reusableTextures = {};
++    this.preFbos = {};
+ 
+-        positionedGlyphs.push(new PositionedGlyph(codePoint, x, y, glyph));
+-        x += glyph.advance + spacing;
+-    }
++    this.frameHistory = new FrameHistory();
+ 
+-    if (!positionedGlyphs.length) return false;
++    this.setup();
+ 
+-    linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate);
++    // Within each layer there are multiple distinct z-planes that can be drawn to.
++    // This is implemented using the WebGL depth buffer.
++    this.numSublayers = TilePyramid.maxUnderzooming + TilePyramid.maxOverzooming + 1;
++    this.depthEpsilon = 1 / Math.pow(2, 16);
+ 
+-    return shaping;
++    this.lineWidthRange = gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE);
+ }
+ 
+-var invisible = {
+-    0x20:   true, // space
+-    0x200b: true  // zero-width space
+-};
++util.extend(Painter.prototype, require('./painter/use_program'));
+ 
+-var breakable = {
+-    0x20:   true, // space
+-    0x26:   true, // ampersand
+-    0x2b:   true, // plus sign
+-    0x2d:   true, // hyphen-minus
+-    0x2f:   true, // solidus
+-    0xad:   true, // soft hyphen
+-    0xb7:   true, // middle dot
+-    0x200b: true, // zero-width space
+-    0x2010: true, // hyphen
+-    0x2013: true  // en dash
+-};
++/*
++ * Update the GL viewport, projection matrix, and transforms to compensate
++ * for a new width and height value.
++ */
++Painter.prototype.resize = function(width, height) {
++    var gl = this.gl;
+ 
+-function linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate) {
+-    var lastSafeBreak = null;
++    this.width = width * browser.devicePixelRatio;
++    this.height = height * browser.devicePixelRatio;
++    gl.viewport(0, 0, this.width, this.height);
+ 
+-    var lengthBeforeCurrentLine = 0;
+-    var lineStartIndex = 0;
+-    var line = 0;
++};
+ 
+-    var maxLineLength = 0;
++Painter.prototype.setup = function() {
++    var gl = this.gl;
+ 
+-    var positionedGlyphs = shaping.positionedGlyphs;
++    gl.verbose = true;
+ 
+-    if (maxWidth) {
+-        for (var i = 0; i < positionedGlyphs.length; i++) {
+-            var positionedGlyph = positionedGlyphs[i];
++    // We are blending the new pixels *behind* the existing pixels. That way we can
++    // draw front-to-back and use then stencil buffer to cull opaque pixels early.
++    gl.enable(gl.BLEND);
++    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+ 
+-            positionedGlyph.x -= lengthBeforeCurrentLine;
+-            positionedGlyph.y += lineHeight * line;
++    gl.enable(gl.STENCIL_TEST);
++
++    gl.enable(gl.DEPTH_TEST);
++    gl.depthFunc(gl.LEQUAL);
+ 
+-            if (positionedGlyph.x > maxWidth && lastSafeBreak !== null) {
++    this._depthMask = false;
++    gl.depthMask(false);
+ 
+-                var lineLength = positionedGlyphs[lastSafeBreak + 1].x;
+-                maxLineLength = Math.max(lineLength, maxLineLength);
++    var PosArray = this.PosArray = new StructArrayType({
++        members: [{ name: 'a_pos', type: 'Int16', components: 2 }]
++    });
+ 
+-                for (var k = lastSafeBreak + 1; k <= i; k++) {
+-                    positionedGlyphs[k].y += lineHeight;
+-                    positionedGlyphs[k].x -= lineLength;
+-                }
++    var tileExtentArray = new PosArray();
++    tileExtentArray.emplaceBack(0, 0);
++    tileExtentArray.emplaceBack(EXTENT, 0);
++    tileExtentArray.emplaceBack(0, EXTENT);
++    tileExtentArray.emplaceBack(EXTENT, EXTENT);
++    this.tileExtentBuffer = new Buffer(tileExtentArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
++    this.tileExtentVAO = new VertexArrayObject();
++    this.tileExtentPatternVAO = new VertexArrayObject();
+ 
+-                if (justify) {
+-                    // Collapse invisible characters.
+-                    var lineEnd = lastSafeBreak;
+-                    if (invisible[positionedGlyphs[lastSafeBreak].codePoint]) {
+-                        lineEnd--;
+-                    }
++    var debugArray = new PosArray();
++    debugArray.emplaceBack(0, 0);
++    debugArray.emplaceBack(EXTENT, 0);
++    debugArray.emplaceBack(EXTENT, EXTENT);
++    debugArray.emplaceBack(0, EXTENT);
++    debugArray.emplaceBack(0, 0);
++    this.debugBuffer = new Buffer(debugArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
++    this.debugVAO = new VertexArrayObject();
+ 
+-                    justifyLine(positionedGlyphs, glyphs, lineStartIndex, lineEnd, justify);
+-                }
++    var rasterBoundsArray = new RasterBoundsArray();
++    rasterBoundsArray.emplaceBack(0, 0, 0, 0);
++    rasterBoundsArray.emplaceBack(EXTENT, 0, 32767, 0);
++    rasterBoundsArray.emplaceBack(0, EXTENT, 0, 32767);
++    rasterBoundsArray.emplaceBack(EXTENT, EXTENT, 32767, 32767);
++    this.rasterBoundsBuffer = new Buffer(rasterBoundsArray.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
++    this.rasterBoundsVAO = new VertexArrayObject();
++};
+ 
+-                lineStartIndex = lastSafeBreak + 1;
+-                lastSafeBreak = null;
+-                lengthBeforeCurrentLine += lineLength;
+-                line++;
+-            }
++/*
++ * Reset the color buffers of the drawing canvas.
++ */
++Painter.prototype.clearColor = function() {
++    var gl = this.gl;
++    gl.clearColor(0, 0, 0, 0);
++    gl.clear(gl.COLOR_BUFFER_BIT);
++};
+ 
+-            if (breakable[positionedGlyph.codePoint]) {
+-                lastSafeBreak = i;
+-            }
+-        }
+-    }
++/*
++ * Reset the drawing canvas by clearing the stencil buffer so that we can draw
++ * new tiles at the same location, while retaining previously drawn pixels.
++ */
++Painter.prototype.clearStencil = function() {
++    var gl = this.gl;
++    gl.clearStencil(0x0);
++    gl.stencilMask(0xFF);
++    gl.clear(gl.STENCIL_BUFFER_BIT);
++};
+ 
+-    var lastPositionedGlyph = positionedGlyphs[positionedGlyphs.length - 1];
+-    var lastLineLength = lastPositionedGlyph.x + glyphs[lastPositionedGlyph.codePoint].advance;
+-    maxLineLength = Math.max(maxLineLength, lastLineLength);
++Painter.prototype.clearDepth = function() {
++    var gl = this.gl;
++    gl.clearDepth(1);
++    this.depthMask(true);
++    gl.clear(gl.DEPTH_BUFFER_BIT);
++};
+ 
+-    var height = (line + 1) * lineHeight;
++Painter.prototype._renderTileClippingMasks = function(coords) {
++    var gl = this.gl;
++    gl.colorMask(false, false, false, false);
++    this.depthMask(false);
++    gl.disable(gl.DEPTH_TEST);
++    gl.enable(gl.STENCIL_TEST);
+ 
+-    justifyLine(positionedGlyphs, glyphs, lineStartIndex, positionedGlyphs.length - 1, justify);
+-    align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate);
++    // Only write clipping IDs to the last 5 bits. The first three are used for drawing fills.
++    gl.stencilMask(0xF8);
++    // Tests will always pass, and ref value will be written to stencil buffer.
++    gl.stencilOp(gl.KEEP, gl.KEEP, gl.REPLACE);
+ 
+-    // Calculate the bounding box
+-    shaping.top += -verticalAlign * height;
+-    shaping.bottom = shaping.top + height;
+-    shaping.left += -horizontalAlign * maxLineLength;
+-    shaping.right = shaping.left + maxLineLength;
+-}
++    var idNext = 1;
++    this._tileClippingMaskIDs = {};
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
++        var id = this._tileClippingMaskIDs[coord.id] = (idNext++) << 3;
+ 
+-function justifyLine(positionedGlyphs, glyphs, start, end, justify) {
+-    var lastAdvance = glyphs[positionedGlyphs[end].codePoint].advance;
+-    var lineIndent = (positionedGlyphs[end].x + lastAdvance) * justify;
++        gl.stencilFunc(gl.ALWAYS, id, 0xF8);
+ 
+-    for (var j = start; j <= end; j++) {
+-        positionedGlyphs[j].x -= lineIndent;
++        var program = this.useProgram('fill');
++        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
++
++        // Draw the clipping mask
++        this.tileExtentVAO.bind(gl, program, this.tileExtentBuffer);
++        gl.drawArrays(gl.TRIANGLE_STRIP, 0, this.tileExtentBuffer.length);
+     }
+ 
+-}
++    gl.stencilMask(0x00);
++    gl.colorMask(true, true, true, true);
++    this.depthMask(true);
++    gl.enable(gl.DEPTH_TEST);
++};
+ 
+-function align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate) {
+-    var shiftX = (justify - horizontalAlign) * maxLineLength + translate[0];
+-    var shiftY = (-verticalAlign * (line + 1) + 0.5) * lineHeight + translate[1];
++Painter.prototype.enableTileClippingMask = function(coord) {
++    var gl = this.gl;
++    gl.stencilFunc(gl.EQUAL, this._tileClippingMaskIDs[coord.id], 0xF8);
++};
+ 
+-    for (var j = 0; j < positionedGlyphs.length; j++) {
+-        positionedGlyphs[j].x += shiftX;
+-        positionedGlyphs[j].y += shiftY;
+-    }
+-}
++// Overridden by headless tests.
++Painter.prototype.prepareBuffers = function() {};
++Painter.prototype.bindDefaultFramebuffer = function() {
++    var gl = this.gl;
++    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
++};
+ 
++var draw = {
++    symbol: require('./draw_symbol'),
++    circle: require('./draw_circle'),
++    line: require('./draw_line'),
++    fill: require('./draw_fill'),
++    raster: require('./draw_raster'),
++    background: require('./draw_background'),
++    debug: require('./draw_debug')
++};
+ 
+-function shapeIcon(image, layout) {
+-    if (!image || !image.rect) return null;
++Painter.prototype.render = function(style, options) {
++    this.style = style;
++    this.options = options;
+ 
+-    var dx = layout['icon-offset'][0];
+-    var dy = layout['icon-offset'][1];
+-    var x1 = dx - image.width / 2;
+-    var x2 = x1 + image.width;
+-    var y1 = dy - image.height / 2;
+-    var y2 = y1 + image.height;
++    this.lineAtlas = style.lineAtlas;
+ 
+-    return new PositionedIcon(image, y1, y2, x1, x2);
+-}
++    this.spriteAtlas = style.spriteAtlas;
++    this.spriteAtlas.setSprite(style.sprite);
+ 
+-function PositionedIcon(image, top, bottom, left, right) {
+-    this.image = image;
+-    this.top = top;
+-    this.bottom = bottom;
+-    this.left = left;
+-    this.right = right;
+-}
++    this.glyphSource = style.glyphSource;
+ 
+-},{}],316:[function(require,module,exports){
+-'use strict';
++    this.frameHistory.record(this.transform.zoom);
+ 
+-var ShelfPack = require('shelf-pack');
+-var browser = require('../util/browser');
++    this.prepareBuffers();
++    this.clearColor();
++    this.clearDepth();
+ 
+-module.exports = SpriteAtlas;
+-function SpriteAtlas(width, height) {
+-    this.width = width;
+-    this.height = height;
++    this.showOverdrawInspector(options.showOverdrawInspector);
+ 
+-    this.bin = new ShelfPack(width, height);
+-    this.images = {};
+-    this.data = false;
+-    this.texture = 0; // WebGL ID
+-    this.filter = 0; // WebGL ID
+-    this.pixelRatio = 1;
+-    this.dirty = true;
+-}
++    this.depthRange = (style._order.length + 2) * this.numSublayers * this.depthEpsilon;
+ 
+-function copyBitmap(src, srcStride, srcX, srcY, dst, dstStride, dstX, dstY, width, height, wrap) {
+-    var srcI = srcY * srcStride + srcX;
+-    var dstI = dstY * dstStride + dstX;
+-    var x, y;
++    this.renderPass({isOpaquePass: true});
++    this.renderPass({isOpaquePass: false});
++};
+ 
+-    if (wrap) {
+-        // add 1 pixel wrapped padding on each side of the image
+-        dstI -= dstStride;
+-        for (y = -1; y <= height; y++, srcI = ((y + height) % height + srcY) * srcStride + srcX, dstI += dstStride) {
+-            for (x = -1; x <= width; x++) {
+-                dst[dstI + x] = src[srcI + ((x + width) % width)];
++Painter.prototype.renderPass = function(options) {
++    var groups = this.style._groups;
++    var isOpaquePass = options.isOpaquePass;
++    this.currentLayer = isOpaquePass ? this.style._order.length : -1;
++
++    for (var i = 0; i < groups.length; i++) {
++        var group = groups[isOpaquePass ? groups.length - 1 - i : i];
++        var source = this.style.sources[group.source];
++
++        var j;
++        var coords = [];
++        if (source) {
++            coords = source.getVisibleCoordinates();
++            for (j = 0; j < coords.length; j++) {
++                coords[j].posMatrix = this.transform.calculatePosMatrix(coords[j], source.maxzoom);
++            }
++            this.clearStencil();
++            if (source.prepare) source.prepare();
++            if (source.isTileClipped) {
++                this._renderTileClippingMasks(coords);
+             }
+         }
+ 
+-    } else {
+-        for (y = 0; y < height; y++, srcI += srcStride, dstI += dstStride) {
+-            for (x = 0; x < width; x++) {
+-                dst[dstI + x] = src[srcI + x];
++        if (isOpaquePass) {
++            if (!this._showOverdrawInspector) {
++                this.gl.disable(this.gl.BLEND);
+             }
++            this.isOpaquePass = true;
++        } else {
++            this.gl.enable(this.gl.BLEND);
++            this.isOpaquePass = false;
++            coords.reverse();
+         }
+-    }
+-}
+-
+-SpriteAtlas.prototype.allocateImage = function(pixelWidth, pixelHeight) {
+ 
+-    pixelWidth = pixelWidth / this.pixelRatio;
+-    pixelHeight = pixelHeight / this.pixelRatio;
+-
+-    // Increase to next number divisible by 4, but at least 1.
+-    // This is so we can scale down the texture coordinates and pack them
+-    // into 2 bytes rather than 4 bytes.
+-    // Pad icons to prevent them from polluting neighbours during linear interpolation
+-    var padding = 2;
+-    var packWidth = pixelWidth + padding + (4 - (pixelWidth + padding) % 4);
+-    var packHeight = pixelHeight + padding + (4 - (pixelHeight + padding) % 4);// + 4;
++        for (j = 0; j < group.length; j++) {
++            var layer = group[isOpaquePass ? group.length - 1 - j : j];
++            this.currentLayer += isOpaquePass ? -1 : 1;
++            this.renderLayer(this, source, layer, coords);
++        }
+ 
+-    var rect = this.bin.packOne(packWidth, packHeight);
+-    if (!rect) {
+-        console.warn('SpriteAtlas out of space.');
+-        return null;
++        if (source) {
++            draw.debug(this, source, coords);
++        }
+     }
+-
+-    return rect;
+ };
+ 
+-SpriteAtlas.prototype.getImage = function(name, wrap) {
+-    if (this.images[name]) {
+-        return this.images[name];
++Painter.prototype.depthMask = function(mask) {
++    if (mask !== this._depthMask) {
++        this._depthMask = mask;
++        this.gl.depthMask(mask);
+     }
++};
+ 
+-    if (!this.sprite) {
+-        return null;
+-    }
++Painter.prototype.renderLayer = function(painter, source, layer, coords) {
++    if (layer.isHidden(this.transform.zoom)) return;
++    if (layer.type !== 'background' && !coords.length) return;
++    this.id = layer.id;
++    draw[layer.type](painter, source, layer, coords);
++};
+ 
+-    var pos = this.sprite.getSpritePosition(name);
+-    if (!pos.width || !pos.height) {
+-        return null;
+-    }
++Painter.prototype.setDepthSublayer = function(n) {
++    var farDepth = 1 - ((1 + this.currentLayer) * this.numSublayers + n) * this.depthEpsilon;
++    var nearDepth = farDepth - 1 + this.depthRange;
++    this.gl.depthRange(nearDepth, farDepth);
++};
+ 
+-    var rect = this.allocateImage(pos.width, pos.height);
+-    if (!rect) {
+-        return null;
+-    }
++Painter.prototype.translatePosMatrix = function(matrix, tile, translate, anchor) {
++    if (!translate[0] && !translate[1]) return matrix;
+ 
+-    var image = new AtlasImage(rect, pos.width / pos.pixelRatio, pos.height / pos.pixelRatio, pos.sdf, pos.pixelRatio / this.pixelRatio);
+-    this.images[name] = image;
++    if (anchor === 'viewport') {
++        var sinA = Math.sin(-this.transform.angle);
++        var cosA = Math.cos(-this.transform.angle);
++        translate = [
++            translate[0] * cosA - translate[1] * sinA,
++            translate[0] * sinA + translate[1] * cosA
++        ];
++    }
+ 
+-    this.copy(rect, pos, wrap);
++    var translation = [
++        pixelsToTileUnits(tile, translate[0], this.transform.zoom),
++        pixelsToTileUnits(tile, translate[1], this.transform.zoom),
++        0
++    ];
+ 
+-    return image;
++    var translatedMatrix = new Float32Array(16);
++    mat4.translate(translatedMatrix, matrix, translation);
++    return translatedMatrix;
+ };
+ 
+-
+-// Return position of a repeating fill pattern.
+-SpriteAtlas.prototype.getPosition = function(name, repeating) {
+-    var image = this.getImage(name, repeating);
+-    var rect = image && image.rect;
+-
+-    if (!rect) {
+-        return null;
++Painter.prototype.saveTexture = function(texture) {
++    var textures = this.reusableTextures[texture.size];
++    if (!textures) {
++        this.reusableTextures[texture.size] = [texture];
++    } else {
++        textures.push(texture);
+     }
++};
+ 
+-    var width = image.width * image.pixelRatio;
+-    var height = image.height * image.pixelRatio;
+-    var padding = 1;
+ 
+-    return {
+-        size: [image.width, image.height],
+-        tl: [(rect.x + padding)         / this.width, (rect.y + padding)          / this.height],
+-        br: [(rect.x + padding + width) / this.width, (rect.y + padding + height) / this.height]
+-    };
++Painter.prototype.getTexture = function(size) {
++    var textures = this.reusableTextures[size];
++    return textures && textures.length > 0 ? textures.pop() : null;
+ };
+ 
+-
+-SpriteAtlas.prototype.allocate = function() {
+-    if (!this.data) {
+-        var w = Math.floor(this.width * this.pixelRatio);
+-        var h = Math.floor(this.height * this.pixelRatio);
+-        this.data = new Uint32Array(w * h);
+-        for (var i = 0; i < this.data.length; i++) {
+-            this.data[i] = 0;
+-        }
+-    }
++Painter.prototype.lineWidth = function(width) {
++    this.gl.lineWidth(util.clamp(width, this.lineWidthRange[0], this.lineWidthRange[1]));
+ };
+ 
++Painter.prototype.showOverdrawInspector = function(enabled) {
++    if (!enabled && !this._showOverdrawInspector) return;
++    this._showOverdrawInspector = enabled;
+ 
+-SpriteAtlas.prototype.copy = function(dst, src, wrap) {
+-    if (!this.sprite.img.data) return;
+-    var srcImg = new Uint32Array(this.sprite.img.data.buffer);
++    var gl = this.gl;
++    if (enabled) {
++        gl.blendFunc(gl.CONSTANT_COLOR, gl.ONE);
++        var numOverdrawSteps = 8;
++        var a = 1 / numOverdrawSteps;
++        gl.blendColor(a, a, a, 0);
++        gl.clearColor(0, 0, 0, 1);
++        gl.clear(gl.COLOR_BUFFER_BIT);
++    } else {
++        gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
++    }
++};
+ 
+-    this.allocate();
+-    var dstImg = this.data;
++},{"../data/bucket":260,"../data/buffer":265,"../source/pixels_to_tile_units":290,"../source/tile_pyramid":295,"../util/browser":348,"../util/struct_array":360,"../util/util":362,"./draw_background":274,"./draw_circle":275,"./draw_debug":277,"./draw_fill":278,"./draw_line":279,"./draw_raster":280,"./draw_symbol":281,"./frame_history":282,"./painter/use_program":285,"./vertex_array_object":286,"gl-matrix":154}],285:[function(require,module,exports){
++'use strict';
+ 
+-    var padding = 1;
+ 
+-    copyBitmap(
+-        /* source buffer */  srcImg,
+-        /* source stride */  this.sprite.img.width,
+-        /* source x */       src.x,
+-        /* source y */       src.y,
+-        /* dest buffer */    dstImg,
+-        /* dest stride */    this.width * this.pixelRatio,
+-        /* dest x */         (dst.x + padding) * this.pixelRatio,
+-        /* dest y */         (dst.y + padding) * this.pixelRatio,
+-        /* icon dimension */ src.width,
+-        /* icon dimension */ src.height,
+-        /* wrap */ wrap
+-    );
++var path = require('path');
++var assert = require('assert');
++var util = require('../../util/util');
+ 
+-    this.dirty = true;
++// readFileSync calls must be written out long-form for brfs.
++var definitions = {
++    debug: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\n\nvoid main() {\n    gl_FragColor = u_color;\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1);\n}\n"
++    },
++    fill: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvoid main() {\n    gl_FragColor = u_color * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n"
++    },
++    circle: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp float u_blur;\nuniform lowp float u_opacity;\n\nvarying lowp vec4 v_color;\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main() {\n    float t = smoothstep(1.0 - max(u_blur, v_antialiasblur), 1.0, length(v_extrude));\n    gl_FragColor = v_color * (1.0 - t) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_extrude_scale;\nuniform float u_devicepixelratio;\n\nattribute vec2 a_pos;\n\n#ifdef ATTRIBUTE_A_COLOR\nattribute lowp vec4 a_color;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\nuniform lowp float u_color_t;\nattribute lowp vec4 a_color0;\nattribute lowp vec4 a_color1;\nattribute lowp vec4 a_color2;\nattribute lowp vec4 a_color3;\n#else\nuniform lowp vec4 a_color;\n#endif\n\n#ifdef ATTRIBUTE_A_RADIUS\nattribute mediump float a_radius;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\nuniform lowp float u_radius_t;\nattribute mediump vec4 a_radius;\n#else\nuniform mediump float a_radius;\n#endif\n\nvarying vec2 v_extrude;\nvarying lowp vec4 v_color;\nvarying lowp float v_antialiasblur;\n\nfloat evaluate_zoom_function_1(const vec4 values, const float t) {\n    if (t < 1.0) {\n        return mix(values[0], values[1], t);\n    } else if (t < 2.0) {\n        return mix(values[1], values[2], t - 1.0);\n    } else {\n        return mix(values[2], values[3], t - 2.0);\n    }\n}\n\nvec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) {\n    if (t < 1.0) {\n        return mix(value0, value1, t);\n    } else if (t < 2.0) {\n        return mix(value1, value2, t - 1.0);\n    } else {\n        return mix(value2, value3, t - 2.0);\n    }\n}\n\nvoid main(void) {\n\n#ifdef ATTRIBUTE_A_RADIUS\n    mediump float radius = a_radius / 10.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\n    mediump float radius = evaluate_zoom_function_1(a_radius, u_radius_t) / 10.0;\n#else\n    mediump float radius = a_radius;\n#endif\n\n    // unencode the extrusion vector that we snuck into the a_pos vector\n    v_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);\n\n    vec2 extrude = v_extrude * radius * u_extrude_scale;\n    // multiply a_pos by 0.5, since we had it * 2 in order to sneak\n    // in extrusion data\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1);\n\n    // gl_Position is divided by gl_Position.w after this shader runs.\n    // Multiply the extrude by it so that it isn't affected by it.\n    gl_Position.xy += extrude * gl_Position.w;\n\n#ifdef ATTRIBUTE_A_COLOR\n    v_color = a_color / 255.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\n    v_color = evaluate_zoom_function_4(a_color0, a_color1, a_color2, a_color3, u_color_t) / 255.0;\n#else\n    v_color = a_color;\n#endif\n\n    // This is a minimum blur distance that serves as a faux-antialiasing for\n    // the circle. since blur is a ratio of the circle's size and the intent is\n    // to keep the blur at roughly 1px, the two are inversely related.\n    v_antialiasblur = 1.0 / u_devicepixelratio / radius;\n}\n"
++    },
++    line: {
++        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
++    },
++    linepattern: {
++        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform float u_point;\nuniform float u_blur;\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_fade;\nuniform float u_opacity;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0);\n    float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0);\n    float y_a = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_a.y);\n    float y_b = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_b.y);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, vec2(x_a, y_a));\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, vec2(x_b, y_b));\n\n    vec4 color = mix(texture2D(u_image, pos), texture2D(u_image, pos2), u_fade);\n\n    alpha *= u_opacity;\n\n    gl_FragColor = color * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 extrude = a_extrude * scale;\n    mediump vec2 dist = u_linewidth.s * extrude;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n    v_linesofar = a_linesofar;\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
++    },
++    linesdfpattern: {
++        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\nuniform sampler2D u_image;\nuniform float u_sdfgamma;\nuniform float u_mix;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float sdfdist_a = texture2D(u_image, v_tex_a).a;\n    float sdfdist_b = texture2D(u_image, v_tex_b).a;\n    float sdfdist = mix(sdfdist_a, sdfdist_b, u_mix);\n    alpha *= smoothstep(0.5 - u_sdfgamma, 0.5 + u_sdfgamma, sdfdist);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump vec2 u_linewidth;\nuniform mediump float u_ratio;\nuniform vec2 u_patternscale_a;\nuniform float u_tex_y_a;\nuniform vec2 u_patternscale_b;\nuniform float u_tex_y_b;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    v_tex_a = vec2(a_linesofar * u_patternscale_a.x, normal.y * u_patternscale_a.y + u_tex_y_a);\n    v_tex_b = vec2(a_linesofar * u_patternscale_b.x, normal.y * u_patternscale_b.y + u_tex_y_b);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
++    },
++    outline: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
++    },
++    outlinepattern: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    // find distance to outline for alpha interpolation\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    \n\n    gl_FragColor = mix(color1, color2, u_mix) * alpha * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
++    },
++    pattern: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    gl_FragColor = mix(color1, color2, u_mix) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n}\n"
++    },
++    raster: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_opacity0;\nuniform float u_opacity1;\nuniform sampler2D u_image0;\nuniform sampler2D u_image1;\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nuniform float u_brightness_low;\nuniform float u_brightness_high;\n\nuniform float u_saturation_factor;\nuniform float u_contrast_factor;\nuniform vec3 u_spin_weights;\n\nvoid main() {\n\n    // read and cross-fade colors from the main and parent tiles\n    vec4 color0 = texture2D(u_image0, v_pos0);\n    vec4 color1 = texture2D(u_image1, v_pos1);\n    vec4 color = color0 * u_opacity0 + color1 * u_opacity1;\n    vec3 rgb = color.rgb;\n\n    // spin\n    rgb = vec3(\n        dot(rgb, u_spin_weights.xyz),\n        dot(rgb, u_spin_weights.zxy),\n        dot(rgb, u_spin_weights.yzx));\n\n    // saturation\n    float average = (color.r + color.g + color.b) / 3.0;\n    rgb += (average - rgb) * u_saturation_factor;\n\n    // contrast\n    rgb = (rgb - 0.5) * u_contrast_factor + 0.5;\n\n    // brightness\n    vec3 u_high_vec = vec3(u_brightness_low, u_brightness_low, u_brightness_low);\n    vec3 u_low_vec = vec3(u_brightness_high, u_brightness_high, u_brightness_high);\n\n    gl_FragColor = vec4(mix(u_high_vec, u_low_vec, rgb), color.a);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_tl_parent;\nuniform float u_scale_parent;\nuniform float u_buffer_scale;\n\nattribute vec2 a_pos;\nattribute vec2 a_texture_pos;\n\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5;\n    v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent;\n}\n"
++    },
++    icon: {
++        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp float u_opacity;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * u_opacity;\n    gl_FragColor = texture2D(u_texture, v_tex) * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
++    },
++    sdf: {
++        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform lowp float u_buffer;\nuniform lowp float u_gamma;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    lowp float dist = texture2D(u_texture, v_tex).a;\n    lowp float fade_alpha = texture2D(u_fadetexture, v_fade_tex).a;\n    lowp float gamma = u_gamma * v_gamma_scale;\n    lowp float alpha = smoothstep(u_buffer - gamma, u_buffer + gamma, dist) * fade_alpha;\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - y * u_extra);\n    v_gamma_scale = perspective_scale;\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
++    },
++    collisionbox: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_zoom;\nuniform float u_maxzoom;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n\n    float alpha = 0.5;\n\n    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha;\n\n    if (v_placement_zoom > u_zoom) {\n        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha;\n    }\n\n    if (u_zoom >= v_max_zoom) {\n        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25;\n    }\n\n    if (v_placement_zoom >= u_maxzoom) {\n        gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2;\n    }\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_extrude;\nattribute vec2 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_scale;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n     gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0);\n\n     v_max_zoom = a_data.x;\n     v_placement_zoom = a_data.y;\n}\n"
++    }
+ };
+ 
+-SpriteAtlas.prototype.setSprite = function(sprite) {
+-    if (sprite) {
+-        this.pixelRatio = browser.devicePixelRatio > 1 ? 2 : 1;
++module.exports._createProgram = function(name, macros) {
++    var gl = this.gl;
++    var program = gl.createProgram();
++    var definition = definitions[name];
+ 
+-        if (this.canvas) {
+-            this.canvas.width = this.width * this.pixelRatio;
+-            this.canvas.height = this.height * this.pixelRatio;
++    var defines = '';
++    if (macros) {
++        for (var m = 0; m < macros.length; m++) {
++            defines += '#define ' + macros[m] + '\n';
+         }
+     }
+-    this.sprite = sprite;
+-};
+ 
+-SpriteAtlas.prototype.addIcons = function(icons, callback) {
+-    for (var i = 0; i < icons.length; i++) {
+-        this.getImage(icons[i]);
+-    }
++    var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);
++    gl.shaderSource(fragmentShader, defines + definition.fragmentSource);
++    gl.compileShader(fragmentShader);
++    assert(gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(fragmentShader));
++    gl.attachShader(program, fragmentShader);
+ 
+-    callback(null, this.images);
+-};
++    var vertexShader = gl.createShader(gl.VERTEX_SHADER);
++    gl.shaderSource(vertexShader, defines + definition.vertexSource);
++    gl.compileShader(vertexShader);
++    assert(gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(vertexShader));
++    gl.attachShader(program, vertexShader);
+ 
+-SpriteAtlas.prototype.bind = function(gl, linear) {
+-    var first = false;
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-        first = true;
+-    } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++    gl.linkProgram(program);
++    assert(gl.getProgramParameter(program, gl.LINK_STATUS), gl.getProgramInfoLog(program));
++
++    var attributes = {};
++    var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
++    for (var i = 0; i < numAttributes; i++) {
++        var attribute = gl.getActiveAttrib(program, i);
++        attributes[attribute.name] = i;
++    }
++
++    var uniforms = {};
++    var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
++    for (var ui = 0; ui < numUniforms; ui++) {
++        var uniform = gl.getActiveUniform(program, ui);
++        uniforms[uniform.name] = gl.getUniformLocation(program, uniform.name);
+     }
+ 
+-    var filterVal = linear ? gl.LINEAR : gl.NEAREST;
+-    if (filterVal !== this.filter) {
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, filterVal);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, filterVal);
+-        this.filter = filterVal;
++    return util.extend({
++        program: program,
++        definition: definition,
++        attributes: attributes,
++        numAttributes: numAttributes
++    }, attributes, uniforms);
++};
++
++module.exports._createProgramCached = function(name, macros) {
++    this.cache = this.cache || {};
++    if (this._showOverdrawInspector) {
++        macros = macros || [];
++        macros.push('OVERDRAW_INSPECTOR');
++    }
++    var key = JSON.stringify({name: name, macros: macros});
++    if (!this.cache[key]) {
++        this.cache[key] = this._createProgram(name, macros);
+     }
++    return this.cache[key];
++};
+ 
+-    if (this.dirty) {
+-        this.allocate();
++module.exports.useProgram = function (nextProgramName, macros) {
++    var gl = this.gl;
+ 
+-        if (first) {
+-            gl.texImage2D(
+-                gl.TEXTURE_2D, // enum target
+-                0, // ind level
+-                gl.RGBA, // ind internalformat
+-                this.width * this.pixelRatio, // GLsizei width
+-                this.height * this.pixelRatio, // GLsizei height
+-                0, // ind border
+-                gl.RGBA, // enum format
+-                gl.UNSIGNED_BYTE, // enum type
+-                new Uint8Array(this.data.buffer) // Object data
+-            );
+-        } else {
+-            gl.texSubImage2D(
+-                gl.TEXTURE_2D, // enum target
+-                0, // int level
+-                0, // int xoffset
+-                0, // int yoffset
+-                this.width * this.pixelRatio, // long width
+-                this.height * this.pixelRatio, // long height
+-                gl.RGBA, // enum format
+-                gl.UNSIGNED_BYTE, // enum type
+-                new Uint8Array(this.data.buffer) // Object pixels
+-            );
+-        }
++    var nextProgram = this._createProgramCached(nextProgramName, macros);
++    var previousProgram = this.currentProgram;
+ 
+-        this.dirty = false;
++    if (previousProgram !== nextProgram) {
++        gl.useProgram(nextProgram.program);
++        this.currentProgram = nextProgram;
+     }
+-};
+ 
+-function AtlasImage(rect, width, height, sdf, pixelRatio) {
+-    this.rect = rect;
+-    this.width = width;
+-    this.height = height;
+-    this.sdf = sdf;
+-    this.pixelRatio = pixelRatio;
+-}
++    return nextProgram;
++};
+ 
+-},{"../util/browser":335,"shelf-pack":406}],317:[function(require,module,exports){
++},{"../../util/util":362,"assert":29,"path":392}],286:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('../util/util');
+-var interpolate = require('../util/interpolate');
+-var browser = require('../util/browser');
+-var LngLat = require('../geo/lng_lat');
+-var LngLatBounds = require('../geo/lng_lat_bounds');
+-var Point = require('point-geometry');
+-
+-/**
+- * Options common to Map#jumpTo, Map#easeTo, and Map#flyTo, controlling the destination
+- * location, zoom level, bearing and pitch. All properties are options; unspecified
+- * options will default to the current value for that property.
+- *
+- * @typedef {Object} CameraOptions
+- * @property {LngLat} center Map center
+- * @property {number} zoom Map zoom level
+- * @property {number} bearing Map rotation bearing in degrees counter-clockwise from north
+- * @property {number} pitch Map angle in degrees at which the camera is looking at the ground
+- * @property {LngLat} around If zooming, the zoom center (defaults to map center)
+- */
++var assert = require('assert');
+ 
+-/**
+- * Options common to map movement methods that involve animation, such as Map#panBy and
+- * Map#easeTo, controlling the duration of the animation and easing function. All properties
+- * are optional.
+- *
+- * @typedef {Object} AnimationOptions
+- * @property {number} duration Number in milliseconds
+- * @property {Function} easing
+- * @property {Array} offset point, origin of movement relative to map center
+- * @property {boolean} animate When set to false, no animation happens
+- */
++module.exports = VertexArrayObject;
+ 
+-var Camera = module.exports = function() {};
++function VertexArrayObject() {
++    this.boundProgram = null;
++    this.boundVertexBuffer = null;
++    this.boundVertexBuffer2 = null;
++    this.boundElementBuffer = null;
++    this.vao = null;
++}
+ 
+-util.extend(Camera.prototype, /** @lends Map.prototype */{
+-    /**
+-     * Get the current view geographical point.
+-     * @returns {LngLat}
+-     */
+-    getCenter: function() { return this.transform.center; },
++var reported = false;
+ 
+-    /**
+-     * Sets a map location. Equivalent to `jumpTo({center: center})`.
+-     *
+-     * @param {LngLat} center Map center to jump to
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setCenter([-74, 38]);
+-     */
+-    setCenter: function(center, eventData) {
+-        this.jumpTo({center: center}, eventData);
+-        return this;
+-    },
++VertexArrayObject.prototype.bind = function(gl, program, vertexBuffer, elementBuffer, vertexBuffer2) {
+ 
+-    /**
+-     * Pan by a certain number of pixels
+-     *
+-     * @param {Array<number>} offset [x, y]
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    panBy: function(offset, options, eventData) {
+-        this.panTo(this.transform.center,
+-            util.extend({offset: Point.convert(offset).mult(-1)}, options), eventData);
+-        return this;
+-    },
++    var ext = gl.extVertexArrayObject;
++    if (ext === undefined) {
++        ext = gl.extVertexArrayObject = gl.getExtension("OES_vertex_array_object");
++    }
+ 
+-    /**
+-     * Pan to a certain location with easing
+-     *
+-     * @param {LngLat} lnglat Location to pan to
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    panTo: function(lnglat, options, eventData) {
+-        return this.easeTo(util.extend({
+-            center: lnglat
+-        }, options), eventData);
+-    },
++    if (ext) {
++        if (!this.vao) this.vao = ext.createVertexArrayOES();
++        ext.bindVertexArrayOES(this.vao);
++    } else if (!reported) {
++        console.warn('Not using VertexArrayObject extension.');
++        reported = true;
++    }
+ 
++    if (!this.boundProgram) {
+ 
+-    /**
+-     * Get the current zoom
+-     * @returns {number}
+-     */
+-    getZoom: function() { return this.transform.zoom; },
++        var numPrevAttributes = ext ? 0 : (gl.currentNumAttributes || 0);
++        var numNextAttributes = program.numAttributes;
++        var i;
+ 
+-    /**
+-     * Sets a map zoom. Equivalent to `jumpTo({zoom: zoom})`.
+-     *
+-     * @param {number} zoom Map zoom level
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     * @example
+-     * // zoom the map to 5
+-     * map.setZoom(5);
+-     */
+-    setZoom: function(zoom, eventData) {
+-        this.jumpTo({zoom: zoom}, eventData);
+-        return this;
+-    },
++        // Enable all attributes for the new program.
++        for (i = numPrevAttributes; i < numNextAttributes; i++) {
++            gl.enableVertexAttribArray(i);
++        }
+ 
+-    /**
+-     * Zooms to a certain zoom level with easing.
+-     *
+-     * @param {number} zoom
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     */
+-    zoomTo: function(zoom, options, eventData) {
+-        return this.easeTo(util.extend({
+-            zoom: zoom
+-        }, options), eventData);
+-    },
++        if (!ext) {
++            // Disable all attributes from the previous program that aren't used in
++            // the new program. Note: attribute indices are *not* program specific!
++            // WebGL breaks if you disable attribute 0. http://stackoverflow.com/questions/20305231
++            assert(i > 0);
++            for (i = numNextAttributes; i < numPrevAttributes; i++) {
++                gl.disableVertexAttribArray(i);
++            }
++            gl.currentNumAttributes = numNextAttributes;
++        }
+ 
+-    /**
+-     * Zoom in by 1 level
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     */
+-    zoomIn: function(options, eventData) {
+-        this.zoomTo(this.getZoom() + 1, options, eventData);
+-        return this;
+-    },
++        vertexBuffer.bind(gl);
++        vertexBuffer.setVertexAttribPointers(gl, program);
++        if (vertexBuffer2) {
++            vertexBuffer2.bind(gl);
++            vertexBuffer2.setVertexAttribPointers(gl, program);
++        }
++        if (elementBuffer) {
++            elementBuffer.bind(gl);
++        }
+ 
+-    /**
+-     * Zoom out by 1 level
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     */
+-    zoomOut: function(options, eventData) {
+-        this.zoomTo(this.getZoom() - 1, options, eventData);
+-        return this;
+-    },
++        if (ext) {
++            // store the arguments so that we can verify them when the vao is bound again
++            this.boundProgram = program;
++            this.boundVertexBuffer = vertexBuffer;
++            this.boundVertexBuffer2 = vertexBuffer2;
++            this.boundElementBuffer = elementBuffer;
++        }
+ 
++    } else {
++        // verify that bind was called with the same arguments
++        assert(this.boundProgram === program, 'trying to bind a VAO to a different shader');
++        assert(this.boundVertexBuffer === vertexBuffer, 'trying to bind a VAO to a different vertex buffer');
++        assert(this.boundVertexBuffer2 === vertexBuffer2, 'trying to bind a VAO to a different vertex buffer');
++        assert(this.boundElementBuffer === elementBuffer, 'trying to bind a VAO to a different element buffer');
++    }
++};
+ 
+-    /**
+-     * Get the current bearing in degrees
+-     * @returns {number}
+-     */
+-    getBearing: function() { return this.transform.bearing; },
++VertexArrayObject.prototype.unbind = function(gl) {
++    var ext = gl.extVertexArrayObject;
++    if (ext) {
++        ext.bindVertexArrayOES(null);
++    }
++};
+ 
+-    /**
+-     * Sets a map rotation. Equivalent to `jumpTo({bearing: bearing})`.
+-     *
+-     * @param {number} bearing Map rotation bearing in degrees counter-clockwise from north
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     * @example
+-     * // rotate the map to 90 degrees
+-     * map.setBearing(90);
+-     */
+-    setBearing: function(bearing, eventData) {
+-        this.jumpTo({bearing: bearing}, eventData);
+-        return this;
+-    },
++VertexArrayObject.prototype.destroy = function(gl) {
++    var ext = gl.extVertexArrayObject;
++    if (ext && this.vao) {
++        ext.deleteVertexArrayOES(this.vao);
++        this.vao = null;
++    }
++};
+ 
+-    /**
+-     * Rotate bearing by a certain number of degrees with easing
+-     *
+-     * @param {number} bearing
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    rotateTo: function(bearing, options, eventData) {
+-        return this.easeTo(util.extend({
+-            bearing: bearing
+-        }, options), eventData);
+-    },
++},{"assert":29}],287:[function(require,module,exports){
++'use strict';
+ 
+-    /**
+-     * Sets map bearing to 0 (north) with easing
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    resetNorth: function(options, eventData) {
+-        this.rotateTo(0, util.extend({duration: 1000}, options), eventData);
+-        return this;
+-    },
++var util = require('../util/util');
++var Evented = require('../util/evented');
++var TilePyramid = require('./tile_pyramid');
++var Source = require('./source');
++var urlResolve = require('resolve-url');
++var EXTENT = require('../data/bucket').EXTENT;
+ 
+-    /**
+-     * Animates map bearing to 0 (north) if it's already close to it.
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    snapToNorth: function(options, eventData) {
+-        if (Math.abs(this.getBearing()) < this.options.bearingSnap) {
+-            return this.resetNorth(options, eventData);
+-        }
+-        return this;
+-    },
++module.exports = GeoJSONSource;
+ 
+-    /**
+-     * Get the current angle in degrees
+-     * @returns {number}
+-     */
+-    getPitch: function() { return this.transform.pitch; },
++/**
++ * Create a GeoJSON data source instance given an options object
++ * @class GeoJSONSource
++ * @param {Object} [options]
++ * @param {Object|string} options.data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
++ * @param {number} [options.maxzoom=18] Maximum zoom to preserve detail at.
++ * @param {number} [options.buffer] Tile buffer on each side in pixels.
++ * @param {number} [options.tolerance] Simplification tolerance (higher means simpler) in pixels.
++ * @param {number} [options.cluster] If the data is a collection of point features, setting this to true clusters the points by radius into groups.
++ * @param {number} [options.clusterRadius=50] Radius of each cluster when clustering points, in pixels.
++ * @param {number} [options.clusterMaxZoom] Max zoom to cluster points on. Defaults to one zoom less than `maxzoom` (so that last zoom features are not clustered).
+ 
+-    /**
+-     * Sets a map angle. Equivalent to `jumpTo({pitch: pitch})`.
+-     *
+-     * @param {number} pitch The angle at which the camera is looking at the ground
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    setPitch: function(pitch, eventData) {
+-        this.jumpTo({pitch: pitch}, eventData);
+-        return this;
+-    },
++ * @example
++ * var sourceObj = new mapboxgl.GeoJSONSource({
++ *    data: {
++ *        "type": "FeatureCollection",
++ *        "features": [{
++ *            "type": "Feature",
++ *            "geometry": {
++ *                "type": "Point",
++ *                "coordinates": [
++ *                    -76.53063297271729,
++ *                    39.18174077994108
++ *                ]
++ *            }
++ *        }]
++ *    }
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
++ */
++function GeoJSONSource(options) {
++    options = options || {};
+ 
++    this._data = options.data;
+ 
+-    /**
+-     * Zoom to contain certain geographical bounds
+-     *
+-     * @param {LngLatBounds|Array<Array<number>>} bounds [[minLng, minLat], [maxLng, maxLat]]
+-     * @param {Object} options
+-     * @param {boolean} [options.linear] When true, the map transitions to the new camera using
+-     *     {@link #Map.easeTo}. When false, the map transitions using {@link #Map.flyTo}. See
+-     *     {@link #Map.flyTo} for information on options specific to that animation transition.
+-     * @param {Function} options.easing
+-     * @param {number} options.padding how much padding there is around the given bounds on each side in pixels
+-     * @param {number} options.maxZoom The resulting zoom level will be at most
+-     *     this value.
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    fitBounds: function(bounds, options, eventData) {
++    if (options.maxzoom !== undefined) this.maxzoom = options.maxzoom;
+ 
+-        options = util.extend({
+-            padding: 0,
+-            offset: [0, 0],
+-            maxZoom: Infinity
+-        }, options);
++    var scale = EXTENT / this.tileSize;
+ 
+-        bounds = LngLatBounds.convert(bounds);
++    this.geojsonVtOptions = {
++        buffer: (options.buffer !== undefined ? options.buffer : 128) * scale,
++        tolerance: (options.tolerance !== undefined ? options.tolerance : 0.375) * scale,
++        extent: EXTENT,
++        maxZoom: this.maxzoom
++    };
+ 
+-        var offset = Point.convert(options.offset),
+-            tr = this.transform,
+-            nw = tr.project(bounds.getNorthWest()),
+-            se = tr.project(bounds.getSouthEast()),
+-            size = se.sub(nw),
+-            scaleX = (tr.width - options.padding * 2 - Math.abs(offset.x) * 2) / size.x,
+-            scaleY = (tr.height - options.padding * 2 - Math.abs(offset.y) * 2) / size.y;
++    this.cluster = options.cluster || false;
++    this.superclusterOptions = {
++        maxZoom: Math.min(options.clusterMaxZoom, this.maxzoom - 1) || (this.maxzoom - 1),
++        extent: EXTENT,
++        radius: (options.clusterRadius || 50) * scale,
++        log: false
++    };
+ 
+-        options.center = tr.unproject(nw.add(se).div(2));
+-        options.zoom = Math.min(tr.scaleZoom(tr.scale * Math.min(scaleX, scaleY)), options.maxZoom);
+-        options.bearing = 0;
++    this._pyramid = new TilePyramid({
++        tileSize: this.tileSize,
++        minzoom: this.minzoom,
++        maxzoom: this.maxzoom,
++        reparseOverscaled: true,
++        load: this._loadTile.bind(this),
++        abort: this._abortTile.bind(this),
++        unload: this._unloadTile.bind(this),
++        add: this._addTile.bind(this),
++        remove: this._removeTile.bind(this),
++        redoPlacement: this._redoTilePlacement.bind(this)
++    });
++}
+ 
+-        return options.linear ?
+-            this.easeTo(options, eventData) :
+-            this.flyTo(options, eventData);
+-    },
++GeoJSONSource.prototype = util.inherit(Evented, /** @lends GeoJSONSource.prototype */{
++    minzoom: 0,
++    maxzoom: 18,
++    tileSize: 512,
++    _dirty: true,
++    isTileClipped: true,
+ 
+     /**
+-     * Change any combination of center, zoom, bearing, and pitch, without
+-     * a transition. The map will retain the current values for any options
+-     * not included in `options`.
++     * Update source geojson data and rerender map
+      *
+-     * @param {CameraOptions} options map view options
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires rotate
+-     * @fires pitch
+-     * @fires zoomend
+-     * @fires moveend
+-     * @returns {Map} `this`
++     * @param {Object|string} data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
++     * @returns {GeoJSONSource} this
+      */
+-    jumpTo: function(options, eventData) {
+-        this.stop();
+-
+-        var tr = this.transform,
+-            zoomChanged = false,
+-            bearingChanged = false,
+-            pitchChanged = false;
++    setData: function(data) {
++        this._data = data;
++        this._dirty = true;
+ 
+-        if ('zoom' in options && tr.zoom !== +options.zoom) {
+-            zoomChanged = true;
+-            tr.zoom = +options.zoom;
+-        }
++        this.fire('change');
+ 
+-        if ('center' in options) {
+-            tr.center = LngLat.convert(options.center);
+-        }
++        if (this.map)
++            this.update(this.map.transform);
+ 
+-        if ('bearing' in options && tr.bearing !== +options.bearing) {
+-            bearingChanged = true;
+-            tr.bearing = +options.bearing;
+-        }
++        return this;
++    },
+ 
+-        if ('pitch' in options && tr.pitch !== +options.pitch) {
+-            pitchChanged = true;
+-            tr.pitch = +options.pitch;
+-        }
++    onAdd: function(map) {
++        this.map = map;
++    },
+ 
+-        this.fire('movestart', eventData)
+-            .fire('move', eventData);
++    loaded: function() {
++        return this._loaded && this._pyramid.loaded();
++    },
+ 
+-        if (zoomChanged) {
+-            this.fire('zoomstart', eventData)
+-                .fire('zoom', eventData)
+-                .fire('zoomend', eventData);
++    update: function(transform) {
++        if (this._dirty) {
++            this._updateData();
+         }
+ 
+-        if (bearingChanged) {
+-            this.fire('rotate', eventData);
++        if (this._loaded) {
++            this._pyramid.update(this.used, transform);
+         }
++    },
+ 
+-        if (pitchChanged) {
+-            this.fire('pitch', eventData);
++    reload: function() {
++        if (this._loaded) {
++            this._pyramid.reload();
+         }
+-
+-        return this.fire('moveend', eventData);
+     },
+ 
+-    /**
+-     * Change any combination of center, zoom, bearing, and pitch, with a smooth animation
+-     * between old and new values. The map will retain the current values for any options
+-     * not included in `options`.
+-     *
+-     * @param {CameraOptions|AnimationOptions} options map view and animation options
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires rotate
+-     * @fires pitch
+-     * @fires zoomend
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    easeTo: function(options, eventData) {
+-        this.stop();
+-
+-        options = util.extend({
+-            offset: [0, 0],
+-            duration: 500,
+-            easing: util.ease
+-        }, options);
++    serialize: function() {
++        return {
++            type: 'geojson',
++            data: this._data
++        };
++    },
+ 
+-        var tr = this.transform,
+-            offset = Point.convert(options.offset),
+-            startZoom = this.getZoom(),
+-            startBearing = this.getBearing(),
+-            startPitch = this.getPitch(),
++    getVisibleCoordinates: Source._getVisibleCoordinates,
++    getTile: Source._getTile,
+ 
+-            zoom = 'zoom' in options ? +options.zoom : startZoom,
+-            bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing,
+-            pitch = 'pitch' in options ? +options.pitch : startPitch,
++    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
++    querySourceFeatures: Source._querySourceFeatures,
+ 
+-            toLngLat,
+-            toPoint;
++    _updateData: function() {
++        this._dirty = false;
++        var options = {
++            tileSize: this.tileSize,
++            source: this.id,
++            geojsonVtOptions: this.geojsonVtOptions,
++            cluster: this.cluster,
++            superclusterOptions: this.superclusterOptions
++        };
+ 
+-        if ('center' in options) {
+-            toLngLat = LngLat.convert(options.center);
+-            toPoint = tr.centerPoint.add(offset);
+-        } else if ('around' in options) {
+-            toLngLat = LngLat.convert(options.around);
+-            toPoint = tr.locationPoint(toLngLat);
++        var data = this._data;
++        if (typeof data === 'string') {
++            options.url = typeof window != 'undefined' ? urlResolve(window.location.href, data) : data;
+         } else {
+-            toPoint = tr.centerPoint.add(offset);
+-            toLngLat = tr.pointLocation(toPoint);
++            options.data = JSON.stringify(data);
+         }
++        this.workerID = this.dispatcher.send('parse geojson', options, function(err) {
++            this._loaded = true;
++            if (err) {
++                this.fire('error', {error: err});
++            } else {
++                this._pyramid.reload();
++                this.fire('change');
++            }
+ 
+-        var fromPoint = tr.locationPoint(toLngLat);
++        }.bind(this));
++    },
+ 
+-        if (options.animate === false) options.duration = 0;
++    _loadTile: function(tile) {
++        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
++        var params = {
++            uid: tile.uid,
++            coord: tile.coord,
++            zoom: tile.coord.z,
++            maxZoom: this.maxzoom,
++            tileSize: this.tileSize,
++            source: this.id,
++            overscaling: overscaling,
++            angle: this.map.transform.angle,
++            pitch: this.map.transform.pitch,
++            showCollisionBoxes: this.map.showCollisionBoxes
++        };
+ 
+-        this.zooming = (zoom !== startZoom);
+-        this.rotating = (startBearing !== bearing);
+-        this.pitching = (pitch !== startPitch);
++        tile.workerID = this.dispatcher.send('load geojson tile', params, function(err, data) {
+ 
+-        if (!options.noMoveStart) {
+-            this.fire('movestart', eventData);
+-        }
+-        if (this.zooming) {
+-            this.fire('zoomstart', eventData);
+-        }
++            tile.unloadVectorData(this.map.painter);
+ 
+-        clearTimeout(this._onEaseEnd);
++            if (tile.aborted)
++                return;
+ 
+-        this._ease(function (k) {
+-            if (this.zooming) {
+-                tr.zoom = interpolate(startZoom, zoom, k);
++            if (err) {
++                this.fire('tile.error', {tile: tile});
++                return;
+             }
+ 
+-            if (this.rotating) {
+-                tr.bearing = interpolate(startBearing, bearing, k);
+-            }
++            tile.loadVectorData(data, this.map.style);
+ 
+-            if (this.pitching) {
+-                tr.pitch = interpolate(startPitch, pitch, k);
++            if (tile.redoWhenDone) {
++                tile.redoWhenDone = false;
++                tile.redoPlacement(this);
+             }
+ 
+-            tr.setLocationAtPoint(toLngLat, fromPoint.add(toPoint.sub(fromPoint)._mult(k)));
+-
+-            this.fire('move', eventData);
+-            if (this.zooming) {
+-                this.fire('zoom', eventData);
+-            }
+-            if (this.rotating) {
+-                this.fire('rotate', eventData);
+-            }
+-            if (this.pitching) {
+-                this.fire('pitch', eventData);
+-            }
+-        }, function() {
+-            if (options.delayEndEvents) {
+-                this._onEaseEnd = setTimeout(this._easeToEnd.bind(this, eventData), options.delayEndEvents);
+-            } else {
+-                this._easeToEnd(eventData);
+-            }
+-        }.bind(this), options);
++            this.fire('tile.load', {tile: tile});
+ 
+-        return this;
++        }.bind(this), this.workerID);
+     },
+ 
+-    _easeToEnd: function(eventData) {
+-        if (this.zooming) {
+-            this.fire('zoomend', eventData);
+-        }
+-        this.fire('moveend', eventData);
++    _abortTile: function(tile) {
++        tile.aborted = true;
++    },
+ 
+-        this.zooming = false;
+-        this.rotating = false;
+-        this.pitching = false;
++    _addTile: function(tile) {
++        this.fire('tile.add', {tile: tile});
+     },
+ 
+-    /**
+-     * Change any combination of center, zoom, bearing, and pitch, animated along a curve that
+-     * evokes flight. The transition animation seamlessly incorporates zooming and panning to help
+-     * the user find his or her bearings even after traversing a great distance.
+-     *
+-     * @param {CameraOptions|AnimationOptions} options map view and animation options
+-     * @param {number} [options.curve=1.42] Relative amount of zooming that takes place along the
+-     *     flight path. A high value maximizes zooming for an exaggerated animation, while a low
+-     *     value minimizes zooming for something closer to {@link #Map.easeTo}. 1.42 is the average
+-     *     value selected by participants in the user study in
+-     *     [van Wijk (2003)](https://www.win.tue.nl/~vanwijk/zoompan.pdf). A value of
+-     *     `Math.pow(6, 0.25)` would be equivalent to the root mean squared average velocity. A
+-     *     value of 1 would produce a circular motion.
+-     * @param {number} [options.minZoom] Zero-based zoom level at the peak of the flight path. If
+-     *     `options.curve` is specified, this option is ignored.
+-     * @param {number} [options.speed=1.2] Average speed of the animation. A speed of 1.2 means that
+-     *     the map appears to move along the flight path by 1.2 times `options.curve` screenfuls every
+-     *     second. A _screenful_ is the visible span in pixels. It does not correspond to a fixed
+-     *     physical distance but rather varies by zoom level.
+-     * @param {number} [options.screenSpeed] Average speed of the animation, measured in screenfuls
+-     *     per second, assuming a linear timing curve. If `options.speed` is specified, this option
+-     *     is ignored.
+-     * @param {Function} [options.easing] Transition timing curve
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires rotate
+-     * @fires pitch
+-     * @fires zoomend
+-     * @fires moveend
+-     * @returns {this}
+-     * @example
+-     * // fly with default options to null island
+-     * map.flyTo({center: [0, 0], zoom: 9});
+-     * // using flyTo options
+-     * map.flyTo({
+-     *   center: [0, 0],
+-     *   zoom: 9,
+-     *   speed: 0.2,
+-     *   curve: 1,
+-     *   easing: function(t) {
+-     *     return t;
+-     *   }
+-     * });
+-     */
+-    flyTo: function(options, eventData) {
+-        // This method implements an “optimal path” animation, as detailed in:
+-        //
+-        // Van Wijk, Jarke J.; Nuij, Wim A. A. “Smooth and efficient zooming and panning.” INFOVIS
+-        //   ’03. pp. 15–22. <https://www.win.tue.nl/~vanwijk/zoompan.pdf#page=5>.
+-        //
+-        // Where applicable, local variable documentation begins with the associated variable or
+-        // function in van Wijk (2003).
++    _removeTile: function(tile) {
++        this.fire('tile.remove', {tile: tile});
++    },
+ 
+-        this.stop();
++    _unloadTile: function(tile) {
++        tile.unloadVectorData(this.map.painter);
++        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    },
+ 
+-        options = util.extend({
+-            offset: [0, 0],
+-            speed: 1.2,
+-            curve: 1.42,
+-            easing: util.ease
+-        }, options);
++    redoPlacement: Source.redoPlacement,
+ 
+-        var tr = this.transform,
+-            offset = Point.convert(options.offset),
+-            startZoom = this.getZoom(),
+-            startBearing = this.getBearing(),
+-            startPitch = this.getPitch();
++    _redoTilePlacement: function(tile) {
++        tile.redoPlacement(this);
++    }
++});
+ 
+-        var center = 'center' in options ? LngLat.convert(options.center) : this.getCenter();
+-        var zoom = 'zoom' in options ?  +options.zoom : startZoom;
+-        var bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing;
+-        var pitch = 'pitch' in options ? +options.pitch : startPitch;
++},{"../data/bucket":260,"../util/evented":354,"../util/util":362,"./source":292,"./tile_pyramid":295,"resolve-url":411}],288:[function(require,module,exports){
++'use strict';
+ 
+-        // If a path crossing the antimeridian would be shorter, extend the final coordinate so that
+-        // interpolating between the two endpoints will cross it.
+-        if (Math.abs(tr.center.lng) + Math.abs(center.lng) > 180) {
+-            if (tr.center.lng > 0 && center.lng < 0) {
+-                center.lng += 360;
+-            } else if (tr.center.lng < 0 && center.lng > 0) {
+-                center.lng -= 360;
+-            }
+-        }
++var Point = require('point-geometry');
++var VectorTileFeature = require('vector-tile').VectorTileFeature;
++var EXTENT = require('../data/bucket').EXTENT;
+ 
+-        var scale = tr.zoomScale(zoom - startZoom),
+-            from = tr.point,
+-            to = 'center' in options ? tr.project(center).sub(offset.div(scale)) : from;
++module.exports = GeoJSONWrapper;
+ 
+-        var startWorldSize = tr.worldSize,
+-            rho = options.curve,
++// conform to vectortile api
++function GeoJSONWrapper(features) {
++    this.features = features;
++    this.length = features.length;
++    this.extent = EXTENT;
++}
+ 
+-            // w₀: Initial visible span, measured in pixels at the initial scale.
+-            w0 = Math.max(tr.width, tr.height),
+-            // w₁: Final visible span, measured in pixels with respect to the initial scale.
+-            w1 = w0 / scale,
+-            // Length of the flight path as projected onto the ground plane, measured in pixels from
+-            // the world image origin at the initial scale.
+-            u1 = to.sub(from).mag();
++GeoJSONWrapper.prototype.feature = function(i) {
++    return new FeatureWrapper(this.features[i]);
++};
+ 
+-        if ('minZoom' in options) {
+-            var minZoom = util.clamp(Math.min(options.minZoom, startZoom, zoom), tr.minZoom, tr.maxZoom);
+-            // w<sub>m</sub>: Maximum visible span, measured in pixels with respect to the initial
+-            // scale.
+-            var wMax = w0 / tr.zoomScale(minZoom - startZoom);
+-            rho = Math.sqrt(wMax / u1 * 2);
+-        }
++function FeatureWrapper(feature) {
++    this.type = feature.type;
++    this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry;
++    this.properties = feature.tags;
++    this.extent = EXTENT;
++}
+ 
+-        // ρ²
+-        var rho2 = rho * rho;
++FeatureWrapper.prototype.loadGeometry = function() {
++    var rings = this.rawGeometry;
++    this.geometry = [];
+ 
+-        /**
+-         * rᵢ: Returns the zoom-out factor at one end of the animation.
+-         *
+-         * @param i 0 for the ascent or 1 for the descent.
+-         * @private
+-         */
+-        function r(i) {
+-            var b = (w1 * w1 - w0 * w0 + (i ? -1 : 1) * rho2 * rho2 * u1 * u1) / (2 * (i ? w1 : w0) * rho2 * u1);
+-            return Math.log(Math.sqrt(b * b + 1) - b);
++    for (var i = 0; i < rings.length; i++) {
++        var ring = rings[i],
++            newRing = [];
++        for (var j = 0; j < ring.length; j++) {
++            newRing.push(new Point(ring[j][0], ring[j][1]));
+         }
++        this.geometry.push(newRing);
++    }
++    return this.geometry;
++};
+ 
+-        function sinh(n) { return (Math.exp(n) - Math.exp(-n)) / 2; }
+-        function cosh(n) { return (Math.exp(n) + Math.exp(-n)) / 2; }
+-        function tanh(n) { return sinh(n) / cosh(n); }
++FeatureWrapper.prototype.bbox = function() {
++    if (!this.geometry) this.loadGeometry();
+ 
+-        // r₀: Zoom-out factor during ascent.
+-        var r0 = r(0),
+-            /**
+-             * w(s): Returns the visible span on the ground, measured in pixels with respect to the
+-             * initial scale.
+-             *
+-             * Assumes an angular field of view of 2 arctan ½ ≈ 53°.
+-             * @private
+-             */
+-            w = function (s) { return (cosh(r0) / cosh(r0 + rho * s)); },
+-            /**
+-             * u(s): Returns the distance along the flight path as projected onto the ground plane,
+-             * measured in pixels from the world image origin at the initial scale.
+-             * @private
+-             */
+-            u = function (s) { return w0 * ((cosh(r0) * tanh(r0 + rho * s) - sinh(r0)) / rho2) / u1; },
+-            // S: Total length of the flight path, measured in ρ-screenfuls.
+-            S = (r(1) - r0) / rho;
++    var rings = this.geometry,
++        x1 = Infinity,
++        x2 = -Infinity,
++        y1 = Infinity,
++        y2 = -Infinity;
+ 
+-        // When u₀ = u₁, the optimal path doesn’t require both ascent and descent.
+-        if (Math.abs(u1) < 0.000001) {
+-            // Perform a more or less instantaneous transition if the path is too short.
+-            if (Math.abs(w0 - w1) < 0.000001) return this.easeTo(options);
++    for (var i = 0; i < rings.length; i++) {
++        var ring = rings[i];
+ 
+-            var k = w1 < w0 ? -1 : 1;
+-            S = Math.abs(Math.log(w1 / w0)) / rho;
++        for (var j = 0; j < ring.length; j++) {
++            var coord = ring[j];
+ 
+-            u = function() { return 0; };
+-            w = function(s) { return Math.exp(k * rho * s); };
++            x1 = Math.min(x1, coord.x);
++            x2 = Math.max(x2, coord.x);
++            y1 = Math.min(y1, coord.y);
++            y2 = Math.max(y2, coord.y);
+         }
++    }
+ 
+-        if ('duration' in options) {
+-            options.duration = +options.duration;
+-        } else {
+-            var V = 'screenSpeed' in options ? +options.screenSpeed / rho : +options.speed;
+-            options.duration = 1000 * S / V;
+-        }
++    return [x1, y1, x2, y2];
++};
+ 
+-        this.zooming = true;
+-        if (startBearing !== bearing) this.rotating = true;
+-        if (startPitch !== pitch) this.pitching = true;
++FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON;
+ 
+-        this.fire('movestart', eventData);
+-        this.fire('zoomstart', eventData);
++},{"../data/bucket":260,"point-geometry":400,"vector-tile":456}],289:[function(require,module,exports){
++'use strict';
+ 
+-        this._ease(function (k) {
+-            // s: The distance traveled along the flight path, measured in ρ-screenfuls.
+-            var s = k * S,
+-                us = u(s);
++var util = require('../util/util');
++var Tile = require('./tile');
++var TileCoord = require('./tile_coord');
++var LngLat = require('../geo/lng_lat');
++var Point = require('point-geometry');
++var Evented = require('../util/evented');
++var ajax = require('../util/ajax');
++var EXTENT = require('../data/bucket').EXTENT;
++var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('../render/vertex_array_object');
+ 
+-            tr.zoom = startZoom + tr.scaleZoom(1 / w(s));
+-            tr.center = tr.unproject(from.add(to.sub(from).mult(us)), startWorldSize);
++module.exports = ImageSource;
+ 
+-            if (this.rotating) {
+-                tr.bearing = interpolate(startBearing, bearing, k);
+-            }
+-            if (this.pitching) {
+-                tr.pitch = interpolate(startPitch, pitch, k);
+-            }
++/**
++ * Create an Image source instance given an options object
++ * @class ImageSource
++ * @param {Object} [options]
++ * @param {string} options.url A string URL of an image file
++ * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
++ * @example
++ * var sourceObj = new mapboxgl.ImageSource({
++ *    url: 'https://www.mapbox.com/images/foo.png',
++ *    coordinates: [
++ *        [-76.54335737228394, 39.18579907229748],
++ *        [-76.52803659439087, 39.1838364847587],
++ *        [-76.5295386314392, 39.17683392507606],
++ *        [-76.54520273208618, 39.17876344106642]
++ *    ]
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
++ */
++function ImageSource(options) {
++    this.urls = options.urls;
++    this.coordinates = options.coordinates;
+ 
+-            this.fire('move', eventData);
+-            this.fire('zoom', eventData);
+-            if (this.rotating) {
+-                this.fire('rotate', eventData);
+-            }
+-            if (this.pitching) {
+-                this.fire('pitch', eventData);
+-            }
+-        }, function() {
+-            this.fire('zoomend', eventData);
+-            this.fire('moveend', eventData);
+-            this.zooming = false;
+-            this.rotating = false;
+-            this.pitching = false;
+-        }, options);
++    ajax.getImage(options.url, function(err, image) {
++        // @TODO handle errors via event.
++        if (err) return;
+ 
+-        return this;
+-    },
++        this.image = image;
+ 
+-    isEasing: function() {
+-        return !!this._abortFn;
++        this.image.addEventListener('load', function() {
++            this.map._rerender();
++        }.bind(this));
++
++        this._loaded = true;
++
++        if (this.map) {
++            this.setCoordinates(options.coordinates);
++        }
++    }.bind(this));
++}
++
++ImageSource.prototype = util.inherit(Evented, /** @lends ImageSource.prototype */ {
++    onAdd: function(map) {
++        this.map = map;
++        if (this.image) {
++            this.setCoordinates(this.coordinates);
++        }
+     },
+ 
+     /**
+-     * Stop current animation
++     * Update image coordinates and rerender map
+      *
+-     * @returns {Map} `this`
++     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
++     * @returns {ImageSource} this
+      */
+-    stop: function() {
+-        if (this._abortFn) {
+-            this._abortFn();
+-            this._finishEase();
+-        }
++    setCoordinates: function(coordinates) {
++        this.coordinates = coordinates;
++
++        // Calculate which mercator tile is suitable for rendering the image in
++        // and create a buffer with the corner coordinates. These coordinates
++        // may be outside the tile, because raster tiles aren't clipped when rendering.
++
++        var map = this.map;
++        var cornerZ0Coords = coordinates.map(function(coord) {
++            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
++        });
++
++        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
++        centerCoord.column = Math.round(centerCoord.column);
++        centerCoord.row = Math.round(centerCoord.row);
++
++        var tileCoords = cornerZ0Coords.map(function(coord) {
++            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
++            return new Point(
++                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
++                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
++        });
++
++        var maxInt16 = 32767;
++        var array = new RasterBoundsArray();
++        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
++        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
++        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
++        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
++
++        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
++        this.tile.buckets = {};
++
++        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
++        this.tile.boundsVAO = new VertexArrayObject();
++
++        this.fire('change');
++
+         return this;
+     },
+ 
+-    _ease: function(frame, finish, options) {
+-        this._finishFn = finish;
+-        this._abortFn = browser.timed(function (t) {
+-            frame.call(this, options.easing(t));
+-            if (t === 1) {
+-                this._finishEase();
+-            }
+-        }, options.animate === false ? 0 : options.duration, this);
++    loaded: function() {
++        return this.image && this.image.complete;
+     },
+ 
+-    _finishEase: function() {
+-        delete this._abortFn;
+-        // The finish function might emit events which trigger new eases, which
+-        // set a new _finishFn. Ensure we don't delete it unintentionally.
+-        var finish = this._finishFn;
+-        delete this._finishFn;
+-        finish.call(this);
++    update: function() {
++        // noop
+     },
+ 
+-    // convert bearing so that it's numerically close to the current one so that it interpolates properly
+-    _normalizeBearing: function(bearing, currentBearing) {
+-        bearing = util.wrap(bearing, -180, 180);
+-        var diff = Math.abs(bearing - currentBearing);
+-        if (Math.abs(bearing - 360 - currentBearing) < diff) bearing -= 360;
+-        if (Math.abs(bearing + 360 - currentBearing) < diff) bearing += 360;
+-        return bearing;
++    reload: function() {
++        // noop
+     },
+ 
+-    _updateEasing: function(duration, zoom, bezier) {
+-        var easing;
+-
+-        if (this.ease) {
+-            var ease = this.ease,
+-                t = (Date.now() - ease.start) / ease.duration,
+-                speed = ease.easing(t + 0.01) - ease.easing(t),
++    prepare: function() {
++        if (!this._loaded || !this.loaded()) return;
+ 
+-                // Quick hack to make new bezier that is continuous with last
+-                x = 0.27 / Math.sqrt(speed * speed + 0.0001) * 0.01,
+-                y = Math.sqrt(0.27 * 0.27 - x * x);
++        var painter = this.map.painter;
++        var gl = painter.gl;
+ 
+-            easing = util.bezier(x, y, 0.25, 1);
++        if (!this.tile.texture) {
++            this.tile.texture = gl.createTexture();
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
+         } else {
+-            easing = bezier ? util.bezier.apply(util, bezier) : util.ease;
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
+         }
++    },
+ 
+-        // store information on current easing
+-        this.ease = {
+-            start: (new Date()).getTime(),
+-            to: Math.pow(2, zoom),
+-            duration: duration,
+-            easing: easing
+-        };
++    getVisibleCoordinates: function() {
++        if (this.tile) return [this.tile.coord];
++        else return [];
++    },
+ 
+-        return easing;
++    getTile: function() {
++        return this.tile;
++    },
++
++    serialize: function() {
++        return {
++            type: 'image',
++            urls: this.urls,
++            coordinates: this.coordinates
++        };
+     }
+ });
+ 
++},{"../data/bucket":260,"../data/buffer":265,"../geo/lng_lat":269,"../render/draw_raster":280,"../render/vertex_array_object":286,"../util/ajax":347,"../util/evented":354,"../util/util":362,"./tile":293,"./tile_coord":294,"point-geometry":400}],290:[function(require,module,exports){
++'use strict';
++
++var Bucket = require('../data/bucket');
++
+ /**
+- * Pitch event. This event is emitted whenever the map's pitch changes.
++ * Converts a pixel value at a the given zoom level to tile units.
+  *
+- * @event pitch
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
++ * The shaders mostly calculate everything in tile units so style
++ * properties need to be converted from pixels to tile units using this.
++ *
++ * For example, a translation by 30 pixels at zoom 6.5 will be a
++ * translation by pixelsToTileUnits(30, 6.5) tile units.
++ *
++ * @param {object} tile a {Tile object} will work well, but any object that follows the format {coord: {TileCord object}, tileSize: {number}} will work
++ * @param {number} pixelValue
++ * @param {number} z
++ * @returns {number} value in tile units
++ * @private
+  */
++module.exports = function(tile, pixelValue, z) {
++    return pixelValue * (Bucket.EXTENT / (tile.tileSize * Math.pow(2, z - tile.coord.z)));
++};
++
+ 
+-},{"../geo/lng_lat":256,"../geo/lng_lat_bounds":257,"../util/browser":335,"../util/interpolate":343,"../util/util":349,"point-geometry":404}],318:[function(require,module,exports){
++},{"../data/bucket":260}],291:[function(require,module,exports){
+ 'use strict';
+ 
+-var Control = require('./control');
+-var DOM = require('../../util/dom');
+-var util = require('../../util/util');
++var util = require('../util/util');
++var ajax = require('../util/ajax');
++var Evented = require('../util/evented');
++var Source = require('./source');
++var normalizeURL = require('../util/mapbox').normalizeTileURL;
+ 
+-module.exports = Attribution;
++module.exports = RasterTileSource;
+ 
+-/**
+- * Creates an attribution control
+- * @class Attribution
+- * @param {Object} [options]
+- * @param {string} [options.position='bottom-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
+- * @example
+- * var map = new mapboxgl.Map({attributionControl: false})
+- *     .addControl(new mapboxgl.Attribution({position: 'top-left'}));
+- */
+-function Attribution(options) {
+-    util.setOptions(this, options);
++function RasterTileSource(options) {
++    util.extend(this, util.pick(options, ['url', 'tileSize']));
++
++    Source._loadTileJSON.call(this, options);
+ }
+ 
+-Attribution.createAttributionString = function(sources) {
+-    var attributions = [];
++RasterTileSource.prototype = util.inherit(Evented, {
++    minzoom: 0,
++    maxzoom: 22,
++    roundZoom: true,
++    tileSize: 512,
++    _loaded: false,
+ 
+-    for (var id in sources) {
+-        var source = sources[id];
+-        if (source.attribution && attributions.indexOf(source.attribution) < 0) {
+-            attributions.push(source.attribution);
+-        }
+-    }
++    onAdd: function(map) {
++        this.map = map;
++    },
+ 
+-    // remove any entries that are substrings of another entry.
+-    // first sort by length so that substrings come first
+-    attributions.sort(function (a, b) { return a.length - b.length; });
+-    attributions = attributions.filter(function (attrib, i) {
+-        for (var j = i + 1; j < attributions.length; j++) {
+-            if (attributions[j].indexOf(attrib) >= 0) { return false; }
++    loaded: function() {
++        return this._pyramid && this._pyramid.loaded();
++    },
++
++    update: function(transform) {
++        if (this._pyramid) {
++            this._pyramid.update(this.used, transform, this.map.style.rasterFadeDuration);
+         }
+-        return true;
+-    });
++    },
+ 
+-    return attributions.join(' | ');
+-};
++    reload: function() {
++        // noop
++    },
+ 
+-Attribution.prototype = util.inherit(Control, {
+-    options: {
+-        position: 'bottom-right'
++    serialize: function() {
++        return {
++            type: 'raster',
++            url: this.url,
++            tileSize: this.tileSize
++        };
+     },
+ 
+-    onAdd: function(map) {
+-        var className = 'mapboxgl-ctrl-attrib',
+-            container = this._container = DOM.create('div', className, map.getContainer());
++    getVisibleCoordinates: Source._getVisibleCoordinates,
++    getTile: Source._getTile,
+ 
+-        this._update();
+-        map.on('source.load', this._update.bind(this));
+-        map.on('source.change', this._update.bind(this));
+-        map.on('source.remove', this._update.bind(this));
+-        map.on('moveend', this._updateEditLink.bind(this));
++    _loadTile: function(tile) {
++        var url = normalizeURL(tile.coord.url(this.tiles), this.url, this.tileSize);
+ 
+-        return container;
++        tile.request = ajax.getImage(url, done.bind(this));
++
++        function done(err, img) {
++            delete tile.request;
++
++            if (tile.aborted)
++                return;
++
++            if (err) {
++                tile.errored = true;
++                this.fire('tile.error', {tile: tile, error: err});
++                return;
++            }
++
++            var gl = this.map.painter.gl;
++            tile.texture = this.map.painter.getTexture(img.width);
++            if (tile.texture) {
++                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
++                gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, img);
++            } else {
++                tile.texture = gl.createTexture();
++                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++                gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
++                gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, img);
++                tile.texture.size = img.width;
++            }
++            gl.generateMipmap(gl.TEXTURE_2D);
++
++            tile.timeAdded = new Date().getTime();
++            this.map.animationLoop.set(this.style.rasterFadeDuration);
++
++            tile.source = this;
++            tile.loaded = true;
++
++            this.fire('tile.load', {tile: tile});
++        }
+     },
+ 
+-    _update: function() {
+-        if (this._map.style) {
+-            this._container.innerHTML = Attribution.createAttributionString(this._map.style.sources);
++    _abortTile: function(tile) {
++        tile.aborted = true;
++
++        if (tile.request) {
++            tile.request.abort();
++            delete tile.request;
+         }
++    },
+ 
+-        this._editLink = this._container.getElementsByClassName('mapbox-improve-map')[0];
+-        this._updateEditLink();
++    _addTile: function(tile) {
++        this.fire('tile.add', {tile: tile});
+     },
+ 
+-    _updateEditLink: function() {
+-        if (this._editLink) {
+-            var center = this._map.getCenter();
+-            this._editLink.href = 'https://www.mapbox.com/map-feedback/#/' +
+-                    center.lng + '/' + center.lat + '/' + Math.round(this._map.getZoom() + 1);
+-        }
++    _removeTile: function(tile) {
++        this.fire('tile.remove', {tile: tile});
++    },
++
++    _unloadTile: function(tile) {
++        if (tile.texture) this.map.painter.saveTexture(tile.texture);
+     }
+ });
+ 
+-},{"../../util/dom":338,"../../util/util":349,"./control":319}],319:[function(require,module,exports){
++},{"../util/ajax":347,"../util/evented":354,"../util/mapbox":359,"../util/util":362,"./source":292}],292:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = Control;
++var util = require('../util/util');
++var ajax = require('../util/ajax');
++var browser = require('../util/browser');
++var TilePyramid = require('./tile_pyramid');
++var normalizeURL = require('../util/mapbox').normalizeSourceURL;
++var TileCoord = require('./tile_coord');
+ 
+-/**
+- * A base class for map-related interface elements.
+- *
+- * @class Control
+- */
+-function Control() {}
++exports._loadTileJSON = function(options) {
++    var loaded = function(err, tileJSON) {
++        if (err) {
++            this.fire('error', {error: err});
++            return;
++        }
+ 
+-Control.prototype = {
+-    /**
+-     * Add this control to the map, returning the control itself
+-     * for chaining. This will insert the control's DOM element into
+-     * the map's DOM element if the control has a `position` specified.
+-     *
+-     * @param {Map} map
+-     * @returns {Control} `this`
+-     */
+-    addTo: function(map) {
+-        this._map = map;
+-        var container = this._container = this.onAdd(map);
+-        if (this.options && this.options.position) {
+-            var pos = this.options.position;
+-            var corner = map._controlCorners[pos];
+-            container.className += ' mapboxgl-ctrl';
+-            if (pos.indexOf('bottom') !== -1) {
+-                corner.insertBefore(container, corner.firstChild);
+-            } else {
+-                corner.appendChild(container);
+-            }
++        util.extend(this, util.pick(tileJSON,
++            ['tiles', 'minzoom', 'maxzoom', 'attribution']));
++
++        if (tileJSON.vector_layers) {
++            this.vectorLayers = tileJSON.vector_layers;
++            this.vectorLayerIds = this.vectorLayers.map(function(layer) { return layer.id; });
+         }
+ 
+-        return this;
+-    },
++        this._pyramid = new TilePyramid({
++            tileSize: this.tileSize,
++            minzoom: this.minzoom,
++            maxzoom: this.maxzoom,
++            roundZoom: this.roundZoom,
++            reparseOverscaled: this.reparseOverscaled,
++            load: this._loadTile.bind(this),
++            abort: this._abortTile.bind(this),
++            unload: this._unloadTile.bind(this),
++            add: this._addTile.bind(this),
++            remove: this._removeTile.bind(this),
++            redoPlacement: this._redoTilePlacement ? this._redoTilePlacement.bind(this) : undefined
++        });
+ 
+-    /**
+-     * Remove this control from the map it has been added to.
+-     *
+-     * @returns {Control} `this`
+-     */
+-    remove: function() {
+-        this._container.parentNode.removeChild(this._container);
+-        if (this.onRemove) this.onRemove(this._map);
+-        this._map = null;
+-        return this;
++        this.fire('load');
++    }.bind(this);
++
++    if (options.url) {
++        ajax.getJSON(normalizeURL(options.url), loaded);
++    } else {
++        browser.frame(loaded.bind(this, null, options));
+     }
+ };
+ 
+-},{}],320:[function(require,module,exports){
+-'use strict';
++exports.redoPlacement = function() {
++    if (!this._pyramid) {
++        return;
++    }
+ 
+-var Control = require('./control');
+-var browser = require('../../util/browser');
+-var DOM = require('../../util/dom');
+-var util = require('../../util/util');
++    var ids = this._pyramid.orderedIDs();
++    for (var i = 0; i < ids.length; i++) {
++        var tile = this._pyramid.getTile(ids[i]);
++        this._redoTilePlacement(tile);
++    }
++};
+ 
+-module.exports = Geolocate;
++exports._getTile = function(coord) {
++    return this._pyramid.getTile(coord.id);
++};
+ 
+-var geoOptions = { enableHighAccuracy: false, timeout: 6000 /* 6sec */ };
++exports._getVisibleCoordinates = function() {
++    if (!this._pyramid) return [];
++    else return this._pyramid.renderedIDs().map(TileCoord.fromID);
++};
+ 
++function sortTilesIn(a, b) {
++    var coordA = a.tile.coord;
++    var coordB = b.tile.coord;
++    return (coordA.z - coordB.z) || (coordA.y - coordB.y) || (coordA.x - coordB.x);
++}
+ 
+-/**
+- * Creates a geolocation control
+- * @class Geolocate
+- * @param {Object} [options]
+- * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
+- * @example
+- * map.addControl(new mapboxgl.Geolocate({position: 'top-left'})); // position is optional
+- */
+-function Geolocate(options) {
+-    util.setOptions(this, options);
++function mergeRenderedFeatureLayers(tiles) {
++    var result = tiles[0] || {};
++    for (var i = 1; i < tiles.length; i++) {
++        var tile = tiles[i];
++        for (var layerID in tile) {
++            var tileFeatures = tile[layerID];
++            var resultFeatures = result[layerID];
++            if (resultFeatures === undefined) {
++                resultFeatures = result[layerID] = tileFeatures;
++            } else {
++                for (var f = 0; f < tileFeatures.length; f++) {
++                    resultFeatures.push(tileFeatures[f]);
++                }
++            }
++        }
++    }
++    return result;
+ }
+ 
+-Geolocate.prototype = util.inherit(Control, {
+-    options: {
+-        position: 'top-right'
+-    },
++exports._queryRenderedVectorFeatures = function(queryGeometry, params, zoom, bearing) {
++    if (!this._pyramid)
++        return {};
+ 
+-    onAdd: function(map) {
+-        var className = 'mapboxgl-ctrl';
++    var tilesIn = this._pyramid.tilesIn(queryGeometry);
+ 
+-        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
+-        if (!browser.supportsGeolocation) return container;
++    tilesIn.sort(sortTilesIn);
+ 
+-        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
++    var styleLayers = this.map.style._layers;
+ 
+-        this._geolocateButton = DOM.create('button', (className + '-icon ' + className + '-geolocate'), this._container);
+-        this._geolocateButton.addEventListener('click', this._onClickGeolocate.bind(this));
+-        return container;
+-    },
++    var renderedFeatureLayers = [];
++    for (var r = 0; r < tilesIn.length; r++) {
++        var tileIn = tilesIn[r];
++        if (!tileIn.tile.featureIndex) continue;
+ 
+-    _onContextMenu: function(e) {
+-        e.preventDefault();
+-    },
++        renderedFeatureLayers.push(tileIn.tile.featureIndex.query({
++            queryGeometry: tileIn.queryGeometry,
++            scale: tileIn.scale,
++            tileSize: tileIn.tile.tileSize,
++            bearing: bearing,
++            params: params
++        }, styleLayers));
++    }
++    return mergeRenderedFeatureLayers(renderedFeatureLayers);
++};
+ 
+-    _onClickGeolocate: function() {
+-        navigator.geolocation.getCurrentPosition(this._success.bind(this), this._error.bind(this), geoOptions);
++exports._querySourceFeatures = function(params) {
++    if (!this._pyramid) {
++        return [];
++    }
+ 
+-        // This timeout ensures that we still call finish() even if
+-        // the user declines to share their location in Firefox
+-        this._timeoutId = setTimeout(this._finish.bind(this), 10000 /* 10sec */);
+-    },
++    var pyramid = this._pyramid;
++    var tiles = pyramid.renderedIDs().map(function(id) {
++        return pyramid.getTile(id);
++    });
++
++    var result = [];
++
++    var dataTiles = {};
++    for (var i = 0; i < tiles.length; i++) {
++        var tile = tiles[i];
++        var dataID = new TileCoord(Math.min(tile.sourceMaxZoom, tile.coord.z), tile.coord.x, tile.coord.y, 0).id;
++        if (!dataTiles[dataID]) {
++            dataTiles[dataID] = true;
++            tile.querySourceFeatures(result, params);
++        }
++    }
++
++    return result;
++};
++
++/*
++ * Create a tiled data source instance given an options object
++ *
++ * @param {Object} options
++ * @param {string} options.type Either `raster` or `vector`.
++ * @param {string} options.url A tile source URL. This should either be `mapbox://{mapid}` or a full `http[s]` url that points to a TileJSON endpoint.
++ * @param {Array} options.tiles An array of tile sources. If `url` is not specified, `tiles` can be used instead to specify tile sources, as in the TileJSON spec. Other TileJSON keys such as `minzoom` and `maxzoom` can be specified in a source object if `tiles` is used.
++ * @param {string} options.id An optional `id` to assign to the source
++ * @param {number} [options.tileSize=512] Optional tile size (width and height in pixels, assuming tiles are square). This option is only configurable for raster sources
++ * @example
++ * var sourceObj = new mapboxgl.Source.create({
++ *    type: 'vector',
++ *    url: 'mapbox://mapbox.mapbox-streets-v5'
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
++ */
++exports.create = function(source) {
++    // This is not at file scope in order to avoid a circular require.
++    var sources = {
++        vector: require('./vector_tile_source'),
++        raster: require('./raster_tile_source'),
++        geojson: require('./geojson_source'),
++        video: require('./video_source'),
++        image: require('./image_source')
++    };
+ 
+-    _success: function(position) {
+-        this._map.jumpTo({
+-            center: [position.coords.longitude, position.coords.latitude],
+-            zoom: 17,
+-            bearing: 0,
+-            pitch: 0
+-        });
+-        this._finish();
+-    },
++    return exports.is(source) ? source : new sources[source.type](source);
++};
+ 
+-    _error: function() {
+-        this._finish();
+-    },
++exports.is = function(source) {
++    // This is not at file scope in order to avoid a circular require.
++    var sources = {
++        vector: require('./vector_tile_source'),
++        raster: require('./raster_tile_source'),
++        geojson: require('./geojson_source'),
++        video: require('./video_source'),
++        image: require('./image_source')
++    };
+ 
+-    _finish: function() {
+-        if (this._timeoutId) { clearTimeout(this._timeoutId); }
+-        this._timeoutId = undefined;
++    for (var type in sources) {
++        if (source instanceof sources[type]) {
++            return true;
++        }
+     }
+ 
+-});
+-
++    return false;
++};
+ 
+-},{"../../util/browser":335,"../../util/dom":338,"../../util/util":349,"./control":319}],321:[function(require,module,exports){
++},{"../util/ajax":347,"../util/browser":348,"../util/mapbox":359,"../util/util":362,"./geojson_source":287,"./image_source":289,"./raster_tile_source":291,"./tile_coord":294,"./tile_pyramid":295,"./vector_tile_source":296,"./video_source":297}],293:[function(require,module,exports){
+ 'use strict';
+ 
+-var Control = require('./control');
+-var DOM = require('../../util/dom');
+-var util = require('../../util/util');
++var util = require('../util/util');
++var Bucket = require('../data/bucket');
++var FeatureIndex = require('../data/feature_index');
++var vt = require('vector-tile');
++var Protobuf = require('pbf');
++var GeoJSONFeature = require('../util/vectortile_to_geojson');
++var featureFilter = require('feature-filter');
++var CollisionTile = require('../symbol/collision_tile');
++var CollisionBoxArray = require('../symbol/collision_box');
+ 
+-module.exports = Navigation;
++module.exports = Tile;
+ 
+ /**
+- * Creates a navigation control with zoom buttons and a compass
+- * @class Navigation
+- * @param {Object} [options]
+- * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
+- * @example
+- * map.addControl(new mapboxgl.Navigation({position: 'top-left'})); // position is optional
++ * A tile object is the combination of a Coordinate, which defines
++ * its place, as well as a unique ID and data tracking for its content
++ *
++ * @param {Coordinate} coord
++ * @param {number} size
++ * @private
+  */
+-function Navigation(options) {
+-    util.setOptions(this, options);
++function Tile(coord, size, sourceMaxZoom) {
++    this.coord = coord;
++    this.uid = util.uniqueId();
++    this.loaded = false; // TODO rename loaded
++    this.isUnloaded = false;
++    this.uses = 0;
++    this.tileSize = size;
++    this.sourceMaxZoom = sourceMaxZoom;
++    this.buckets = {};
+ }
+ 
+-Navigation.prototype = util.inherit(Control, {
+-    options: {
+-        position: 'top-right'
+-    },
+-
+-    onAdd: function(map) {
+-        var className = 'mapboxgl-ctrl';
++Tile.prototype = {
+ 
+-        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
+-        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
++    /**
++     * Given a data object with a 'buffers' property, load it into
++     * this tile's elementGroups and buffers properties and set loaded
++     * to true. If the data is null, like in the case of an empty
++     * GeoJSON tile, no-op but still set loaded to true.
++     * @param {Object} data
++     * @returns {undefined}
++     * @private
++     */
++    loadVectorData: function(data, style) {
++        this.loaded = true;
+ 
+-        this._zoomInButton = this._createButton(className + '-icon ' + className + '-zoom-in', map.zoomIn.bind(map));
+-        this._zoomOutButton = this._createButton(className + '-icon ' + className + '-zoom-out', map.zoomOut.bind(map));
+-        this._compass = this._createButton(className + '-icon ' + className + '-compass', map.resetNorth.bind(map));
++        // empty GeoJSON tile
++        if (!data) return;
+ 
+-        this._compassArrow = DOM.create('div', 'arrow', this._compass);
++        this.collisionBoxArray = new CollisionBoxArray(data.collisionBoxArray);
++        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
++        this.featureIndex = new FeatureIndex(data.featureIndex, data.rawTileData, this.collisionTile);
++        this.rawTileData = data.rawTileData;
++        this.buckets = unserializeBuckets(data.buckets, style);
++    },
+ 
+-        this._compass.addEventListener('mousedown', this._onCompassDown.bind(this));
+-        this._onCompassMove = this._onCompassMove.bind(this);
+-        this._onCompassUp = this._onCompassUp.bind(this);
++    /**
++     * given a data object and a GL painter, destroy and re-create
++     * all of its buffers.
++     * @param {Object} data
++     * @param {Object} painter
++     * @returns {undefined}
++     * @private
++     */
++    reloadSymbolData: function(data, painter, style) {
++        if (this.isUnloaded) return;
+ 
+-        map.on('rotate', this._rotateCompassArrow.bind(this));
+-        this._rotateCompassArrow();
++        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
++        this.featureIndex.setCollisionTile(this.collisionTile);
+ 
+-        this._el = map.getCanvasContainer();
++        // Destroy and delete existing symbol buckets
++        for (var id in this.buckets) {
++            var bucket = this.buckets[id];
++            if (bucket.type === 'symbol') {
++                bucket.destroy(painter.gl);
++                delete this.buckets[id];
++            }
++        }
+ 
+-        return container;
++        // Add new symbol buckets
++        util.extend(this.buckets, unserializeBuckets(data.buckets, style));
+     },
+ 
+-    _onContextMenu: function(e) {
+-        e.preventDefault();
++    /**
++     * Make sure that this tile doesn't own any data within a given
++     * painter, so that it doesn't consume any memory or maintain
++     * any references to the painter.
++     * @param {Object} painter gl painter object
++     * @returns {undefined}
++     * @private
++     */
++    unloadVectorData: function(painter) {
++        for (var id in this.buckets) {
++            var bucket = this.buckets[id];
++            bucket.destroy(painter.gl);
++        }
++
++        this.collisionBoxArray = null;
++        this.collisionTile = null;
++        this.featureIndex = null;
++        this.rawTileData = null;
++        this.buckets = null;
++        this.loaded = false;
++        this.isUnloaded = true;
+     },
+ 
+-    _onCompassDown: function(e) {
+-        if (e.button !== 0) return;
++    redoPlacement: function(source) {
++        if (!this.loaded || this.redoingPlacement) {
++            this.redoWhenDone = true;
++            return;
++        }
+ 
+-        DOM.disableDrag();
+-        document.addEventListener('mousemove', this._onCompassMove);
+-        document.addEventListener('mouseup', this._onCompassUp);
++        this.redoingPlacement = true;
+ 
+-        this._el.dispatchEvent(copyMouseEvent(e));
+-        e.stopPropagation();
+-    },
++        source.dispatcher.send('redo placement', {
++            uid: this.uid,
++            source: source.id,
++            angle: source.map.transform.angle,
++            pitch: source.map.transform.pitch,
++            showCollisionBoxes: source.map.showCollisionBoxes
++        }, done.bind(this), this.workerID);
+ 
+-    _onCompassMove: function(e) {
+-        if (e.button !== 0) return;
++        function done(_, data) {
++            this.reloadSymbolData(data, source.map.painter, source.map.style);
++            source.fire('tile.load', {tile: this});
+ 
+-        this._el.dispatchEvent(copyMouseEvent(e));
+-        e.stopPropagation();
++            this.redoingPlacement = false;
++            if (this.redoWhenDone) {
++                this.redoPlacement(source);
++                this.redoWhenDone = false;
++            }
++        }
+     },
+ 
+-    _onCompassUp: function(e) {
+-        if (e.button !== 0) return;
++    getBucket: function(layer) {
++        return this.buckets && this.buckets[layer.ref || layer.id];
++    },
+ 
+-        document.removeEventListener('mousemove', this._onCompassMove);
+-        document.removeEventListener('mouseup', this._onCompassUp);
+-        DOM.enableDrag();
++    querySourceFeatures: function(result, params) {
++        if (!this.rawTileData) return;
+ 
+-        this._el.dispatchEvent(copyMouseEvent(e));
+-        e.stopPropagation();
+-    },
++        if (!this.vtLayers) {
++            this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
++        }
+ 
+-    _createButton: function(className, fn) {
+-        var a = DOM.create('button', className, this._container);
+-        a.addEventListener('click', function() { fn(); });
+-        return a;
+-    },
++        var layer = this.vtLayers._geojsonTileLayer || this.vtLayers[params.sourceLayer];
+ 
+-    _rotateCompassArrow: function() {
+-        var rotate = 'rotate(' + (this._map.transform.angle * (180 / Math.PI)) + 'deg)';
+-        this._compassArrow.style.transform = rotate;
++        if (!layer) return;
++
++        var filter = featureFilter(params.filter);
++        var coord = { z: this.coord.z, x: this.coord.x, y: this.coord.y };
++
++        for (var i = 0; i < layer.length; i++) {
++            var feature = layer.feature(i);
++            if (filter(feature)) {
++                var geojsonFeature = new GeoJSONFeature(feature, this.coord.z, this.coord.x, this.coord.y);
++                geojsonFeature.tile = coord;
++                result.push(geojsonFeature);
++            }
++        }
+     }
+-});
++};
+ 
++function unserializeBuckets(input, style) {
++    var output = {};
++    for (var i = 0; i < input.length; i++) {
++        var layer = style.getLayer(input[i].layerId);
++        if (!layer) continue;
+ 
+-function copyMouseEvent(e) {
+-    return new MouseEvent(e.type, {
+-        button: 2,    // right click
+-        buttons: 2,   // right click
+-        bubbles: true,
+-        cancelable: true,
+-        detail: e.detail,
+-        view: e.view,
+-        screenX: e.screenX,
+-        screenY: e.screenY,
+-        clientX: e.clientX,
+-        clientY: e.clientY,
+-        movementX: e.movementX,
+-        movementY: e.movementY,
+-        ctrlKey: e.ctrlKey,
+-        shiftKey: e.shiftKey,
+-        altKey: e.altKey,
+-        metaKey: e.metaKey
+-    });
++        var bucket = Bucket.create(util.extend({
++            layer: layer,
++            childLayers: input[i].childLayerIds
++                .map(style.getLayer.bind(style))
++                .filter(function(layer) { return layer; })
++        }, input[i]));
++        output[bucket.id] = bucket;
++    }
++    return output;
+ }
+ 
+-
+-},{"../../util/dom":338,"../../util/util":349,"./control":319}],322:[function(require,module,exports){
++},{"../data/bucket":260,"../data/feature_index":266,"../symbol/collision_box":319,"../symbol/collision_tile":321,"../util/util":362,"../util/vectortile_to_geojson":363,"feature-filter":99,"pbf":394,"vector-tile":456}],294:[function(require,module,exports){
+ 'use strict';
+ 
+-var DOM = require('../../util/dom'),
+-    LngLatBounds = require('../../geo/lng_lat_bounds'),
+-    util = require('../../util/util');
++var assert = require('assert');
++var Coordinate = require('../geo/coordinate');
+ 
+-module.exports = BoxZoomHandler;
++module.exports = TileCoord;
+ 
+-/**
+- * The `BoxZoomHandler` allows a user to zoom the map to fit a bounding box.
+- * The bounding box is defined by holding `shift` while dragging the cursor.
+- * @class BoxZoomHandler
+- */
+-function BoxZoomHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
+-    this._container = map.getContainer();
++function TileCoord(z, x, y, w) {
++    assert(!isNaN(z) && z >= 0 && z % 1 === 0);
++    assert(!isNaN(x) && x >= 0 && x % 1 === 0);
++    assert(!isNaN(y) && y >= 0 && y % 1 === 0);
+ 
+-    util.bindHandlers(this);
+-}
++    if (isNaN(w)) w = 0;
+ 
+-BoxZoomHandler.prototype = {
++    this.z = +z;
++    this.x = +x;
++    this.y = +y;
++    this.w = +w;
+ 
+-    _enabled: false,
+-    _active: false,
++    // calculate id
++    w *= 2;
++    if (w < 0) w = w * -1 - 1;
++    var dim = 1 << this.z;
++    this.id = ((dim * dim * w + dim * this.y + this.x) * 32) + this.z;
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "box zoom" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
+-    },
++    // for caching pos matrix calculation when rendering
++    this.posMatrix = null;
++}
+ 
+-    /**
+-     * Returns true if the "box zoom" interaction is currently active, i.e. currently being used.
+-     * @returns {boolean} active state
+-     */
+-    isActive: function () {
+-        return this._active;
+-    },
++TileCoord.prototype.toString = function() {
++    return this.z + "/" + this.x + "/" + this.y;
++};
+ 
+-    /**
+-     * Enable the "box zoom" interaction.
+-     * @example
+-     *   map.boxZoom.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('mousedown', this._onMouseDown, false);
+-        this._enabled = true;
+-    },
++TileCoord.prototype.toCoordinate = function(sourceMaxZoom) {
++    var zoom = Math.min(this.z, sourceMaxZoom);
++    var tileScale = Math.pow(2, zoom);
++    var row = this.y;
++    var column = this.x + tileScale * this.w;
++    return new Coordinate(column, row, zoom);
++};
+ 
+-    /**
+-     * Disable the "box zoom" interaction.
+-     * @example
+-     *   map.boxZoom.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('mousedown', this._onMouseDown);
+-        this._enabled = false;
+-    },
++// Parse a packed integer id into a TileCoord object
++TileCoord.fromID = function(id) {
++    var z = id % 32, dim = 1 << z;
++    var xy = ((id - z) / 32);
++    var x = xy % dim, y = ((xy - x) / dim) % dim;
++    var w = Math.floor(xy / (dim * dim));
++    if (w % 2 !== 0) w = w * -1 - 1;
++    w /= 2;
++    return new TileCoord(z, x, y, w);
++};
+ 
+-    _onMouseDown: function (e) {
+-        if (!(e.shiftKey && e.button === 0)) return;
++// given a list of urls, choose a url template and return a tile URL
++TileCoord.prototype.url = function(urls, sourceMaxZoom) {
++    return urls[(this.x + this.y) % urls.length]
++        .replace('{prefix}', (this.x % 16).toString(16) + (this.y % 16).toString(16))
++        .replace('{z}', Math.min(this.z, sourceMaxZoom || this.z))
++        .replace('{x}', this.x)
++        .replace('{y}', this.y);
++};
+ 
+-        document.addEventListener('mousemove', this._onMouseMove, false);
+-        document.addEventListener('keydown', this._onKeyDown, false);
+-        document.addEventListener('mouseup', this._onMouseUp, false);
++// Return the coordinate of the parent tile
++TileCoord.prototype.parent = function(sourceMaxZoom) {
++    if (this.z === 0) return null;
+ 
+-        DOM.disableDrag();
+-        this._startPos = DOM.mousePos(this._el, e);
+-        this._active = true;
+-    },
++    // the id represents an overscaled tile, return the same coordinates with a lower z
++    if (this.z > sourceMaxZoom) {
++        return new TileCoord(this.z - 1, this.x, this.y, this.w);
++    }
+ 
+-    _onMouseMove: function (e) {
+-        var p0 = this._startPos,
+-            p1 = DOM.mousePos(this._el, e);
++    return new TileCoord(this.z - 1, Math.floor(this.x / 2), Math.floor(this.y / 2), this.w);
++};
+ 
+-        if (!this._box) {
+-            this._box = DOM.create('div', 'mapboxgl-boxzoom', this._container);
+-            this._container.classList.add('mapboxgl-crosshair');
+-            this._fireEvent('boxzoomstart', e);
+-        }
++TileCoord.prototype.wrapped = function() {
++    return new TileCoord(this.z, this.x, this.y, 0);
++};
+ 
+-        var minX = Math.min(p0.x, p1.x),
+-            maxX = Math.max(p0.x, p1.x),
+-            minY = Math.min(p0.y, p1.y),
+-            maxY = Math.max(p0.y, p1.y);
++// Return the coordinates of the tile's children
++TileCoord.prototype.children = function(sourceMaxZoom) {
+ 
+-        DOM.setTransform(this._box, 'translate(' + minX + 'px,' + minY + 'px)');
++    if (this.z >= sourceMaxZoom) {
++        // return a single tile coord representing a an overscaled tile
++        return [new TileCoord(this.z + 1, this.x, this.y, this.w)];
++    }
+ 
+-        this._box.style.width = (maxX - minX) + 'px';
+-        this._box.style.height = (maxY - minY) + 'px';
+-    },
++    var z = this.z + 1;
++    var x = this.x * 2;
++    var y = this.y * 2;
++    return [
++        new TileCoord(z, x, y, this.w),
++        new TileCoord(z, x + 1, y, this.w),
++        new TileCoord(z, x, y + 1, this.w),
++        new TileCoord(z, x + 1, y + 1, this.w)
++    ];
++};
+ 
+-    _onMouseUp: function (e) {
+-        if (e.button !== 0) return;
++// Taken from polymaps src/Layer.js
++// https://github.com/simplegeo/polymaps/blob/master/src/Layer.js#L333-L383
+ 
+-        var p0 = this._startPos,
+-            p1 = DOM.mousePos(this._el, e),
+-            bounds = new LngLatBounds(this._map.unproject(p0), this._map.unproject(p1));
++function edge(a, b) {
++    if (a.row > b.row) { var t = a; a = b; b = t; }
++    return {
++        x0: a.column,
++        y0: a.row,
++        x1: b.column,
++        y1: b.row,
++        dx: b.column - a.column,
++        dy: b.row - a.row
++    };
++}
+ 
+-        this._finish();
++function scanSpans(e0, e1, ymin, ymax, scanLine) {
++    var y0 = Math.max(ymin, Math.floor(e1.y0));
++    var y1 = Math.min(ymax, Math.ceil(e1.y1));
+ 
+-        if (p0.x === p1.x && p0.y === p1.y) {
+-            this._fireEvent('boxzoomcancel', e);
+-        } else {
+-            this._map
+-                .fitBounds(bounds, {linear: true})
+-                .fire('boxzoomend', { originalEvent: e, boxZoomBounds: bounds });
+-        }
+-    },
++    // sort edges by x-coordinate
++    if ((e0.x0 === e1.x0 && e0.y0 === e1.y0) ?
++            (e0.x0 + e1.dy / e0.dy * e0.dx < e1.x1) :
++            (e0.x1 - e1.dy / e0.dy * e0.dx < e1.x0)) {
++        var t = e0; e0 = e1; e1 = t;
++    }
+ 
+-    _onKeyDown: function (e) {
+-        if (e.keyCode === 27) {
+-            this._finish();
+-            this._fireEvent('boxzoomcancel', e);
+-        }
+-    },
++    // scan lines!
++    var m0 = e0.dx / e0.dy;
++    var m1 = e1.dx / e1.dy;
++    var d0 = e0.dx > 0; // use y + 1 to compute x0
++    var d1 = e1.dx < 0; // use y + 1 to compute x1
++    for (var y = y0; y < y1; y++) {
++        var x0 = m0 * Math.max(0, Math.min(e0.dy, y + d0 - e0.y0)) + e0.x0;
++        var x1 = m1 * Math.max(0, Math.min(e1.dy, y + d1 - e1.y0)) + e1.x0;
++        scanLine(Math.floor(x1), Math.ceil(x0), y);
++    }
++}
+ 
+-    _finish: function () {
+-        this._active = false;
++function scanTriangle(a, b, c, ymin, ymax, scanLine) {
++    var ab = edge(a, b),
++        bc = edge(b, c),
++        ca = edge(c, a);
+ 
+-        document.removeEventListener('mousemove', this._onMouseMove, false);
+-        document.removeEventListener('keydown', this._onKeyDown, false);
+-        document.removeEventListener('mouseup', this._onMouseUp, false);
++    var t;
+ 
+-        this._container.classList.remove('mapboxgl-crosshair');
++    // sort edges by y-length
++    if (ab.dy > bc.dy) { t = ab; ab = bc; bc = t; }
++    if (ab.dy > ca.dy) { t = ab; ab = ca; ca = t; }
++    if (bc.dy > ca.dy) { t = bc; bc = ca; ca = t; }
++
++    // scan span! scan span!
++    if (ab.dy) scanSpans(ca, ab, ymin, ymax, scanLine);
++    if (bc.dy) scanSpans(ca, bc, ymin, ymax, scanLine);
++}
++
++TileCoord.cover = function(z, bounds, actualZ) {
++    var tiles = 1 << z;
++    var t = {};
+ 
+-        if (this._box) {
+-            this._box.parentNode.removeChild(this._box);
+-            this._box = null;
++    function scanLine(x0, x1, y) {
++        var x, wx, coord;
++        if (y >= 0 && y <= tiles) {
++            for (x = x0; x < x1; x++) {
++                wx = (x % tiles + tiles) % tiles;
++                coord = new TileCoord(actualZ, wx, y, Math.floor(x / tiles));
++                t[coord.id] = coord;
++            }
+         }
++    }
+ 
+-        DOM.enableDrag();
+-    },
++    // Divide the screen up in two triangles and scan each of them:
++    // +---/
++    // | / |
++    // /---+
++    scanTriangle(bounds[0], bounds[1], bounds[2], 0, tiles, scanLine);
++    scanTriangle(bounds[2], bounds[3], bounds[0], 0, tiles, scanLine);
+ 
+-    _fireEvent: function (type, e) {
+-        return this._map.fire(type, { originalEvent: e });
+-    }
++    return Object.keys(t).map(function(id) {
++        return t[id];
++    });
+ };
+ 
++},{"../geo/coordinate":268,"assert":29}],295:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Boxzoom start event. This event is emitted at the start of a box zoom interaction.
+- *
+- * @event boxzoomstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++var Tile = require('./tile');
++var TileCoord = require('./tile_coord');
++var Point = require('point-geometry');
++var Cache = require('../util/lru_cache');
++var Coordinate = require('../geo/coordinate');
++var util = require('../util/util');
++var EXTENT = require('../data/bucket').EXTENT;
+ 
+-/**
+- * Boxzoom end event. This event is emitted at the end of a box zoom interaction
+- *
+- * @event boxzoomend
+- * @memberof Map
+- * @instance
+- * @type {Object}
+- * @property {Event} originalEvent the original DOM event
+- * @property {LngLatBounds} boxZoomBounds the bounds of the box zoom target
+- */
++module.exports = TilePyramid;
+ 
+ /**
+- * Boxzoom cancel event.  This event is emitted when the user cancels a box zoom interaction,
+- *   or when the box zoom does not meet the minimum size threshold.
++ * A tile pyramid is a specialized cache and datastructure
++ * that contains tiles. It's used by sources to manage their
++ * data.
+  *
+- * @event boxzoomcancel
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
++ * @param {Object} options
++ * @param {number} options.tileSize
++ * @param {number} options.minzoom
++ * @param {number} options.maxzoom
++ * @private
+  */
++function TilePyramid(options) {
++    this.tileSize = options.tileSize;
++    this.minzoom = options.minzoom;
++    this.maxzoom = options.maxzoom;
++    this.roundZoom = options.roundZoom;
++    this.reparseOverscaled = options.reparseOverscaled;
+ 
+-},{"../../geo/lng_lat_bounds":257,"../../util/dom":338,"../../util/util":349}],323:[function(require,module,exports){
+-'use strict';
++    this._load = options.load;
++    this._abort = options.abort;
++    this._unload = options.unload;
++    this._add = options.add;
++    this._remove = options.remove;
++    this._redoPlacement = options.redoPlacement;
+ 
+-module.exports = DoubleClickZoomHandler;
++    this._tiles = {};
++    this._cache = new Cache(0, function(tile) { return this._unload(tile); }.bind(this));
+ 
+-/**
+- * The `DoubleClickZoomHandler` allows a user to zoom the map around point by
+- * double clicking.
+- * @class DoubleClickZoomHandler
+- */
+-function DoubleClickZoomHandler(map) {
+-    this._map = map;
+-    this._onDblClick = this._onDblClick.bind(this);
++    this._filterRendered = this._filterRendered.bind(this);
+ }
+ 
+-DoubleClickZoomHandler.prototype = {
+ 
+-    _enabled: false,
++TilePyramid.maxOverzooming = 10;
++TilePyramid.maxUnderzooming = 3;
+ 
++TilePyramid.prototype = {
+     /**
+-     * Returns the current enabled/disabled state of the "double click to zoom" interaction.
+-     * @returns {boolean} enabled state
++     * Confirm that every tracked tile is loaded.
++     * @returns {boolean} whether all tiles are loaded.
++     * @private
+      */
+-    isEnabled: function () {
+-        return this._enabled;
++    loaded: function() {
++        for (var t in this._tiles) {
++            if (!this._tiles[t].loaded && !this._tiles[t].errored)
++                return false;
++        }
++        return true;
+     },
+ 
+     /**
+-     * Enable the "double click to zoom" interaction.
+-     * @example
+-     * map.doubleClickZoom.enable();
++     * Return all tile ids ordered with z-order, and cast to numbers
++     * @returns {Array<number>} ids
++     * @private
+      */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._map.on('dblclick', this._onDblClick);
+-        this._enabled = true;
++    orderedIDs: function() {
++        return Object.keys(this._tiles).map(Number).sort(compareKeyZoom);
+     },
+ 
+-    /**
+-     * Disable the "double click to zoom" interaction.
+-     * @example
+-     * map.doubleClickZoom.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._map.off('dblclick', this._onDblClick);
+-        this._enabled = false;
++    renderedIDs: function() {
++        return this.orderedIDs().filter(this._filterRendered);
+     },
+ 
+-    _onDblClick: function (e) {
+-        this._map.zoomTo(this._map.getZoom() +
+-            (e.originalEvent.shiftKey ? -1 : 1), {around: e.lngLat});
+-    }
+-};
+-
+-},{}],324:[function(require,module,exports){
+-'use strict';
+-
+-var DOM = require('../../util/dom'),
+-    util = require('../../util/util');
+-
+-module.exports = DragPanHandler;
+-
+-var inertiaLinearity = 0.3,
+-    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
+-    inertiaMaxSpeed = 1400, // px/s
+-    inertiaDeceleration = 2500; // px/s^2
+-
+-
+-/**
+- * The `DragPanHandler` allows a user to pan the map by clicking and dragging
+- * the cursor.
+- * @class DragPanHandler
+- */
+-function DragPanHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
+-
+-    util.bindHandlers(this);
+-}
+-
+-DragPanHandler.prototype = {
++    _filterRendered: function(id) {
++        return this._tiles[id].loaded && !this._coveredTiles[id];
++    },
+ 
+-    _enabled: false,
+-    _active: false,
++    reload: function() {
++        this._cache.reset();
++        for (var i in this._tiles) {
++            this._load(this._tiles[i]);
++        }
++    },
+ 
+     /**
+-     * Returns the current enabled/disabled state of the "drag to pan" interaction.
+-     * @returns {boolean} enabled state
++     * Get a specific tile by id
++     * @param {string|number} id tile id
++     * @returns {Object} tile
++     * @private
+      */
+-    isEnabled: function () {
+-        return this._enabled;
++    getTile: function(id) {
++        return this._tiles[id];
+     },
+ 
+     /**
+-     * Returns true if the "drag to pan" interaction is currently active, i.e. currently being used.
+-     * @returns {boolean} active state
++     * get the zoom level adjusted for the difference in map and source tilesizes
++     * @param {Object} transform
++     * @returns {number} zoom level
++     * @private
+      */
+-    isActive: function () {
+-        return this._active;
++    getZoom: function(transform) {
++        return transform.zoom + Math.log(transform.tileSize / this.tileSize) / Math.LN2;
+     },
+ 
+     /**
+-     * Enable the "drag to pan" interaction.
+-     * @example
+-     * map.dragPan.enable();
++     * Return a zoom level that will cover all tiles in a given transform
++     * @param {Object} transform
++     * @returns {number} zoom level
++     * @private
+      */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('mousedown', this._onDown);
+-        this._el.addEventListener('touchstart', this._onDown);
+-        this._enabled = true;
++    coveringZoomLevel: function(transform) {
++        return (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
+     },
+ 
+     /**
+-     * Disable the "drag to pan" interaction.
+-     * @example
+-     * map.dragPan.disable();
++     * Given a transform, return all coordinates that could cover that
++     * transform for a covering zoom level.
++     * @param {Object} transform
++     * @returns {Array<Tile>} tiles
++     * @private
+      */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('mousedown', this._onDown);
+-        this._el.removeEventListener('touchstart', this._onDown);
+-        this._enabled = false;
+-    },
++    coveringTiles: function(transform) {
++        var z = this.coveringZoomLevel(transform);
++        var actualZ = z;
+ 
+-    _onDown: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        if (this.isActive()) return;
++        if (z < this.minzoom) return [];
++        if (z > this.maxzoom) z = this.maxzoom;
+ 
+-        if (e.touches) {
+-            document.addEventListener('touchmove', this._onMove);
+-            document.addEventListener('touchend', this._onTouchEnd);
+-        } else {
+-            document.addEventListener('mousemove', this._onMove);
+-            document.addEventListener('mouseup', this._onMouseUp);
+-        }
++        var tr = transform,
++            tileCenter = tr.locationCoordinate(tr.center)._zoomTo(z),
++            centerPoint = new Point(tileCenter.column - 0.5, tileCenter.row - 0.5);
+ 
+-        this._active = false;
+-        this._startPos = this._pos = DOM.mousePos(this._el, e);
+-        this._inertia = [[Date.now(), this._pos]];
++        return TileCoord.cover(z, [
++            tr.pointCoordinate(new Point(0, 0))._zoomTo(z),
++            tr.pointCoordinate(new Point(tr.width, 0))._zoomTo(z),
++            tr.pointCoordinate(new Point(tr.width, tr.height))._zoomTo(z),
++            tr.pointCoordinate(new Point(0, tr.height))._zoomTo(z)
++        ], this.reparseOverscaled ? actualZ : z).sort(function(a, b) {
++            return centerPoint.dist(a) - centerPoint.dist(b);
++        });
+     },
+ 
+-    _onMove: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-
+-        if (!this.isActive()) {
+-            this._active = true;
+-            this._fireEvent('dragstart', e);
+-            this._fireEvent('movestart', e);
+-        }
+-
+-        var pos = DOM.mousePos(this._el, e),
+-            map = this._map;
+-
+-        map.stop();
+-        this._drainInertiaBuffer();
+-        this._inertia.push([Date.now(), pos]);
+-
+-        map.transform.setLocationAtPoint(map.transform.pointLocation(this._pos), pos);
+-
+-        this._fireEvent('drag', e);
+-        this._fireEvent('move', e);
+-
+-        this._pos = pos;
+-
+-        e.preventDefault();
+-    },
++    /**
++     * Recursively find children of the given tile (up to maxCoveringZoom) that are already loaded;
++     * adds found tiles to retain object; returns true if any child is found.
++     *
++     * @param {Coordinate} coord
++     * @param {number} maxCoveringZoom
++     * @param {boolean} retain
++     * @returns {boolean} whether the operation was complete
++     * @private
++     */
++    findLoadedChildren: function(coord, maxCoveringZoom, retain) {
++        var found = false;
+ 
+-    _onUp: function (e) {
+-        if (!this.isActive()) return;
++        for (var id in this._tiles) {
++            var tile = this._tiles[id];
+ 
+-        this._active = false;
+-        this._fireEvent('dragend', e);
+-        this._drainInertiaBuffer();
++            // only consider loaded tiles on higher zoom levels (up to maxCoveringZoom)
++            if (retain[id] || !tile.loaded || tile.coord.z <= coord.z || tile.coord.z > maxCoveringZoom) continue;
+ 
+-        var finish = function() {
+-            this._fireEvent('moveend', e);
+-        }.bind(this);
++            // disregard tiles that are not descendants of the given tile coordinate
++            var z2 = Math.pow(2, Math.min(tile.coord.z, this.maxzoom) - Math.min(coord.z, this.maxzoom));
++            if (Math.floor(tile.coord.x / z2) !== coord.x ||
++                Math.floor(tile.coord.y / z2) !== coord.y)
++                continue;
+ 
+-        var inertia = this._inertia;
+-        if (inertia.length < 2) {
+-            finish();
+-            return;
+-        }
++            // found loaded child
++            retain[id] = true;
++            found = true;
+ 
+-        var last = inertia[inertia.length - 1],
+-            first = inertia[0],
+-            flingOffset = last[1].sub(first[1]),
+-            flingDuration = (last[0] - first[0]) / 1000;
++            // loop through parents; retain the topmost loaded one if found
++            while (tile && tile.coord.z - 1 > coord.z) {
++                var parentId = tile.coord.parent(this.maxzoom).id;
++                tile = this._tiles[parentId];
+ 
+-        if (flingDuration === 0 || last[1].equals(first[1])) {
+-            finish();
+-            return;
++                if (tile && tile.loaded) {
++                    delete retain[id];
++                    retain[parentId] = true;
++                }
++            }
+         }
++        return found;
++    },
+ 
+-        // calculate px/s velocity & adjust for increased initial animation speed when easing out
+-        var velocity = flingOffset.mult(inertiaLinearity / flingDuration),
+-            speed = velocity.mag(); // px/s
+-
+-        if (speed > inertiaMaxSpeed) {
+-            speed = inertiaMaxSpeed;
+-            velocity._unit()._mult(speed);
++    /**
++     * Find a loaded parent of the given tile (up to minCoveringZoom);
++     * adds the found tile to retain object and returns the tile if found
++     *
++     * @param {Coordinate} coord
++     * @param {number} minCoveringZoom
++     * @param {boolean} retain
++     * @returns {Tile} tile object
++     * @private
++     */
++    findLoadedParent: function(coord, minCoveringZoom, retain) {
++        for (var z = coord.z - 1; z >= minCoveringZoom; z--) {
++            coord = coord.parent(this.maxzoom);
++            var tile = this._tiles[coord.id];
++            if (tile && tile.loaded) {
++                retain[coord.id] = true;
++                return tile;
++            }
++            if (this._cache.has(coord.id)) {
++                this.addTile(coord);
++                retain[coord.id] = true;
++                return this._tiles[coord.id];
++            }
+         }
+-
+-        var duration = speed / (inertiaDeceleration * inertiaLinearity),
+-            offset = velocity.mult(-duration / 2);
+-
+-        this._map.panBy(offset, {
+-            duration: duration * 1000,
+-            easing: inertiaEasing,
+-            noMoveStart: true
+-        }, { originalEvent: e });
+     },
+ 
+-    _onMouseUp: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        this._onUp(e);
+-        document.removeEventListener('mousemove', this._onMove);
+-        document.removeEventListener('mouseup', this._onMouseUp);
++    /**
++     * Resizes the tile cache based on the current viewport's size.
++     *
++     * Larger viewports use more tiles and need larger caches. Larger viewports
++     * are more likely to be found on devices with more memory and on pages where
++     * the map is more important.
++     *
++     * @private
++     */
++    updateCacheSize: function(transform) {
++        var widthInTiles = Math.ceil(transform.width / transform.tileSize) + 1;
++        var heightInTiles = Math.ceil(transform.height / transform.tileSize) + 1;
++        var approxTilesInView = widthInTiles * heightInTiles;
++        var commonZoomRange = 5;
++        this._cache.setMaxSize(Math.floor(approxTilesInView * commonZoomRange));
+     },
+ 
+-    _onTouchEnd: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        this._onUp(e);
+-        document.removeEventListener('touchmove', this._onMove);
+-        document.removeEventListener('touchend', this._onTouchEnd);
+-    },
++    /**
++     * Removes tiles that are outside the viewport and adds new tiles that
++     * are inside the viewport.
++     * @private
++     */
++    update: function(used, transform, fadeDuration) {
++        var i;
++        var coord;
++        var tile;
+ 
+-    _fireEvent: function (type, e) {
+-        return this._map.fire(type, { originalEvent: e });
+-    },
++        this.updateCacheSize(transform);
+ 
+-    _ignoreEvent: function (e) {
+-        var map = this._map;
++        // Determine the overzooming/underzooming amounts.
++        var zoom = (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
++        var minCoveringZoom = Math.max(zoom - TilePyramid.maxOverzooming, this.minzoom);
++        var maxCoveringZoom = Math.max(zoom + TilePyramid.maxUnderzooming,  this.minzoom);
+ 
+-        if (map.boxZoom && map.boxZoom.isActive()) return true;
+-        if (map.dragRotate && map.dragRotate.isActive()) return true;
+-        if (e.touches) {
+-            return (e.touches.length > 1);
+-        } else {
+-            if (e.ctrlKey) return true;
+-            var buttons = 1,  // left button
+-                button = 0;   // left button
+-            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
+-        }
+-    },
++        // Retain is a list of tiles that we shouldn't delete, even if they are not
++        // the most ideal tile for the current viewport. This may include tiles like
++        // parent or child tiles that are *already* loaded.
++        var retain = {};
++        var now = new Date().getTime();
+ 
+-    _drainInertiaBuffer: function () {
+-        var inertia = this._inertia,
+-            now = Date.now(),
+-            cutoff = 160;   // msec
++        // Covered is a list of retained tiles who's areas are full covered by other,
++        // better, retained tiles. They are not drawn separately.
++        this._coveredTiles = {};
+ 
+-        while (inertia.length > 0 && now - inertia[0][0] > cutoff) inertia.shift();
+-    }
+-};
++        var required = used ? this.coveringTiles(transform) : [];
++        for (i = 0; i < required.length; i++) {
++            coord = required[i];
++            tile = this.addTile(coord);
+ 
++            retain[coord.id] = true;
+ 
+-/**
+- * Drag start event. This event is emitted at the start of a user-initiated pan interaction.
+- *
+- * @event dragstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++            if (tile.loaded)
++                continue;
+ 
+-/**
+- * Drag event. This event is emitted repeatedly during a user-initiated pan interaction.
+- *
+- * @event drag
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++            // The tile we require is not yet loaded.
++            // Retain child or parent tiles that cover the same area.
++            if (!this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
++                this.findLoadedParent(coord, minCoveringZoom, retain);
++            }
++        }
+ 
+-/**
+- * Drag end event. This event is emitted at the end of a user-initiated pan interaction.
+- *
+- * @event dragend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++        var parentsForFading = {};
+ 
+-},{"../../util/dom":338,"../../util/util":349}],325:[function(require,module,exports){
+-'use strict';
++        var ids = Object.keys(retain);
++        for (var k = 0; k < ids.length; k++) {
++            var id = ids[k];
++            coord = TileCoord.fromID(id);
++            tile = this._tiles[id];
++            if (tile && tile.timeAdded > now - (fadeDuration || 0)) {
++                // This tile is still fading in. Find tiles to cross-fade with it.
++                if (this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
++                    retain[id] = true;
++                }
++                this.findLoadedParent(coord, minCoveringZoom, parentsForFading);
++            }
++        }
+ 
+-var DOM = require('../../util/dom'),
+-    Point = require('point-geometry'),
+-    util = require('../../util/util');
++        var fadedParent;
++        for (fadedParent in parentsForFading) {
++            if (!retain[fadedParent]) {
++                // If a tile is only needed for fading, mark it as covered so that it isn't rendered on it's own.
++                this._coveredTiles[fadedParent] = true;
++            }
++        }
++        for (fadedParent in parentsForFading) {
++            retain[fadedParent] = true;
++        }
+ 
+-module.exports = DragRotateHandler;
++        // Remove the tiles we don't need anymore.
++        var remove = util.keysDifference(this._tiles, retain);
++        for (i = 0; i < remove.length; i++) {
++            this.removeTile(+remove[i]);
++        }
+ 
+-var inertiaLinearity = 0.25,
+-    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
+-    inertiaMaxSpeed = 180, // deg/s
+-    inertiaDeceleration = 720; // deg/s^2
++        this.transform = transform;
++    },
+ 
++    /**
++     * Add a tile, given its coordinate, to the pyramid.
++     * @param {Coordinate} coord
++     * @returns {Coordinate} the coordinate.
++     * @private
++     */
++    addTile: function(coord) {
++        var tile = this._tiles[coord.id];
++        if (tile)
++            return tile;
+ 
+-/**
+- * The `DragRotateHandler` allows a user to rotate the map by clicking and
+- * dragging the cursor while holding the right mouse button or the `ctrl` key.
+- * @class DragRotateHandler
+- */
+-function DragRotateHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++        var wrapped = coord.wrapped();
++        tile = this._tiles[wrapped.id];
+ 
+-    util.bindHandlers(this);
+-}
++        if (!tile) {
++            tile = this._cache.get(wrapped.id);
++            if (tile && this._redoPlacement) {
++                this._redoPlacement(tile);
++            }
++        }
+ 
+-DragRotateHandler.prototype = {
++        if (!tile) {
++            var zoom = coord.z;
++            var overscaling = zoom > this.maxzoom ? Math.pow(2, zoom - this.maxzoom) : 1;
++            tile = new Tile(wrapped, this.tileSize * overscaling, this.maxzoom);
++            this._load(tile);
++        }
+ 
+-    _enabled: false,
+-    _active: false,
++        tile.uses++;
++        this._tiles[coord.id] = tile;
++        this._add(tile, coord);
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "drag to rotate" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
++        return tile;
+     },
+ 
+     /**
+-     * Returns true if the "drag to rotate" interaction is currently active, i.e. currently being used.
+-     * @returns {boolean} active state
++     * Remove a tile, given its id, from the pyramid
++     * @param {string|number} id tile id
++     * @returns {undefined} nothing
++     * @private
+      */
+-    isActive: function () {
+-        return this._active;
++    removeTile: function(id) {
++        var tile = this._tiles[id];
++        if (!tile)
++            return;
++
++        tile.uses--;
++        delete this._tiles[id];
++        this._remove(tile);
++
++        if (tile.uses > 0)
++            return;
++
++        if (tile.loaded) {
++            this._cache.add(tile.coord.wrapped().id, tile);
++        } else {
++            this._abort(tile);
++            this._unload(tile);
++        }
+     },
+ 
+     /**
+-     * Enable the "drag to rotate" interaction.
+-     * @example
+-     * map.dragRotate.enable();
++     * Remove all tiles from this pyramid
++     * @private
+      */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('mousedown', this._onDown);
+-        this._enabled = true;
++    clearTiles: function() {
++        for (var id in this._tiles)
++            this.removeTile(id);
++        this._cache.reset();
+     },
+ 
+     /**
+-     * Disable the "drag to rotate" interaction.
+-     * @example
+-     * map.dragRotate.disable();
++     * Search through our current tiles and attempt to find the tiles that
++     * cover the given bounds.
++     * @param {Array<Coordinate>} queryGeometry coordinates of the corners of bounding rectangle
++     * @returns {Array<Object>} result items have {tile, minX, maxX, minY, maxY}, where min/max bounding values are the given bounds transformed in into the coordinate space of this tile.
++     * @private
+      */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('mousedown', this._onDown);
+-        this._enabled = false;
+-    },
++    tilesIn: function(queryGeometry) {
++        var tileResults = {};
++        var ids = this.orderedIDs();
+ 
+-    _onDown: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        if (this.isActive()) return;
++        var minX = Infinity;
++        var minY = Infinity;
++        var maxX = -Infinity;
++        var maxY = -Infinity;
++        var z = queryGeometry[0].zoom;
+ 
+-        document.addEventListener('mousemove', this._onMove);
+-        document.addEventListener('mouseup', this._onUp);
++        for (var k = 0; k < queryGeometry.length; k++) {
++            var p = queryGeometry[k];
++            minX = Math.min(minX, p.column);
++            minY = Math.min(minY, p.row);
++            maxX = Math.max(maxX, p.column);
++            maxY = Math.max(maxY, p.row);
++        }
+ 
+-        this._active = false;
+-        this._inertia = [[Date.now(), this._map.getBearing()]];
+-        this._startPos = this._pos = DOM.mousePos(this._el, e);
+-        this._center = this._map.transform.centerPoint;  // Center of rotation
++        for (var i = 0; i < ids.length; i++) {
++            var tile = this._tiles[ids[i]];
++            var coord = TileCoord.fromID(ids[i]);
+ 
+-        // If the first click was too close to the center, move the center of rotation by 200 pixels
+-        // in the direction of the click.
+-        var startToCenter = this._startPos.sub(this._center),
+-            startToCenterDist = startToCenter.mag();
++            var tileSpaceBounds = [
++                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(minX, minY, z)),
++                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(maxX, maxY, z))
++            ];
+ 
+-        if (startToCenterDist < 200) {
+-            this._center = this._startPos.add(new Point(-200, 0)._rotate(startToCenter.angle()));
+-        }
++            if (tileSpaceBounds[0].x < EXTENT && tileSpaceBounds[0].y < EXTENT &&
++                tileSpaceBounds[1].x >= 0 && tileSpaceBounds[1].y >= 0) {
+ 
+-        e.preventDefault();
+-    },
++                var tileSpaceQueryGeometry = [];
++                for (var j = 0; j < queryGeometry.length; j++) {
++                    tileSpaceQueryGeometry.push(coordinateToTilePoint(coord, tile.sourceMaxZoom, queryGeometry[j]));
++                }
+ 
+-    _onMove: function (e) {
+-        if (this._ignoreEvent(e)) return;
++                var tileResult = tileResults[tile.coord.id];
++                if (tileResult === undefined) {
++                    tileResult = tileResults[tile.coord.id] = {
++                        tile: tile,
++                        queryGeometry: [],
++                        scale: Math.pow(2, this.transform.zoom - tile.coord.z)
++                    };
++                }
+ 
+-        if (!this.isActive()) {
+-            this._active = true;
+-            this._fireEvent('rotatestart', e);
+-            this._fireEvent('movestart', e);
++                // Wrapped tiles share one tileResult object but can have multiple queryGeometry parts
++                tileResult.queryGeometry.push(tileSpaceQueryGeometry);
++            }
+         }
+ 
+-        var map = this._map;
+-        map.stop();
+-
+-        var p1 = this._pos,
+-            p2 = DOM.mousePos(this._el, e),
+-            center = this._center,
+-            bearingDiff = p1.sub(center).angleWith(p2.sub(center)) / Math.PI * 180,
+-            bearing = map.getBearing() - bearingDiff,
+-            inertia = this._inertia,
+-            last = inertia[inertia.length - 1];
++        var results = [];
++        for (var t in tileResults) {
++            results.push(tileResults[t]);
++        }
++        return results;
++    }
++};
+ 
+-        this._drainInertiaBuffer();
+-        inertia.push([Date.now(), map._normalizeBearing(bearing, last[1])]);
++/**
++ * Convert a coordinate to a point in a tile's coordinate space.
++ * @param {Coordinate} tileCoord
++ * @param {Coordinate} coord
++ * @returns {Object} position
++ * @private
++ */
++function coordinateToTilePoint(tileCoord, sourceMaxZoom, coord) {
++    var zoomedCoord = coord.zoomTo(Math.min(tileCoord.z, sourceMaxZoom));
++    return {
++        x: (zoomedCoord.column - (tileCoord.x + tileCoord.w * Math.pow(2, tileCoord.z))) * EXTENT,
++        y: (zoomedCoord.row - tileCoord.y) * EXTENT
++    };
+ 
+-        map.transform.bearing = bearing;
++}
+ 
+-        this._fireEvent('rotate', e);
+-        this._fireEvent('move', e);
++function compareKeyZoom(a, b) {
++    return (a % 32) - (b % 32);
++}
+ 
+-        this._pos = p2;
+-    },
++},{"../data/bucket":260,"../geo/coordinate":268,"../util/lru_cache":358,"../util/util":362,"./tile":293,"./tile_coord":294,"point-geometry":400}],296:[function(require,module,exports){
++'use strict';
+ 
+-    _onUp: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        document.removeEventListener('mousemove', this._onMove);
+-        document.removeEventListener('mouseup', this._onUp);
++var util = require('../util/util');
++var Evented = require('../util/evented');
++var Source = require('./source');
++var normalizeURL = require('../util/mapbox').normalizeTileURL;
+ 
+-        if (!this.isActive()) return;
++module.exports = VectorTileSource;
+ 
+-        this._active = false;
+-        this._fireEvent('rotateend', e);
+-        this._drainInertiaBuffer();
++function VectorTileSource(options) {
++    util.extend(this, util.pick(options, ['url', 'tileSize']));
++    this._options = util.extend({ type: 'vector' }, options);
+ 
+-        var map = this._map,
+-            mapBearing = map.getBearing(),
+-            inertia = this._inertia;
++    if (this.tileSize !== 512) {
++        throw new Error('vector tile sources must have a tileSize of 512');
++    }
+ 
+-        var finish = function() {
+-            if (Math.abs(mapBearing) < map.options.bearingSnap) {
+-                map.resetNorth({noMoveStart: true}, { originalEvent: e });
+-            } else {
+-                this._fireEvent('moveend', e);
+-            }
+-        }.bind(this);
++    Source._loadTileJSON.call(this, options);
++}
+ 
+-        if (inertia.length < 2) {
+-            finish();
+-            return;
+-        }
++VectorTileSource.prototype = util.inherit(Evented, {
++    minzoom: 0,
++    maxzoom: 22,
++    tileSize: 512,
++    reparseOverscaled: true,
++    _loaded: false,
++    isTileClipped: true,
+ 
+-        var first = inertia[0],
+-            last = inertia[inertia.length - 1],
+-            previous = inertia[inertia.length - 2],
+-            bearing = map._normalizeBearing(mapBearing, previous[1]),
+-            flingDiff = last[1] - first[1],
+-            sign = flingDiff < 0 ? -1 : 1,
+-            flingDuration = (last[0] - first[0]) / 1000;
++    onAdd: function(map) {
++        this.map = map;
++    },
+ 
+-        if (flingDiff === 0 || flingDuration === 0) {
+-            finish();
+-            return;
+-        }
++    loaded: function() {
++        return this._pyramid && this._pyramid.loaded();
++    },
+ 
+-        var speed = Math.abs(flingDiff * (inertiaLinearity / flingDuration));  // deg/s
+-        if (speed > inertiaMaxSpeed) {
+-            speed = inertiaMaxSpeed;
++    update: function(transform) {
++        if (this._pyramid) {
++            this._pyramid.update(this.used, transform);
+         }
++    },
+ 
+-        var duration = speed / (inertiaDeceleration * inertiaLinearity),
+-            offset = sign * speed * (duration / 2);
+-
+-        bearing += offset;
+-
+-        if (Math.abs(map._normalizeBearing(bearing, 0)) < map.options.bearingSnap) {
+-            bearing = map._normalizeBearing(0, bearing);
++    reload: function() {
++        if (this._pyramid) {
++            this._pyramid.reload();
+         }
+-
+-        map.rotateTo(bearing, {
+-            duration: duration * 1000,
+-            easing: inertiaEasing,
+-            noMoveStart: true
+-        }, { originalEvent: e });
+     },
+ 
+-    _fireEvent: function (type, e) {
+-        return this._map.fire(type, { originalEvent: e });
++    serialize: function() {
++        return util.extend({}, this._options);
+     },
+ 
+-    _ignoreEvent: function (e) {
+-        var map = this._map;
++    getVisibleCoordinates: Source._getVisibleCoordinates,
++    getTile: Source._getTile,
+ 
+-        if (map.boxZoom && map.boxZoom.isActive()) return true;
+-        if (map.dragPan && map.dragPan.isActive()) return true;
+-        if (e.touches) {
+-            return (e.touches.length > 1);
++    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
++    querySourceFeatures: Source._querySourceFeatures,
++
++    _loadTile: function(tile) {
++        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
++        var params = {
++            url: normalizeURL(tile.coord.url(this.tiles, this.maxzoom), this.url),
++            uid: tile.uid,
++            coord: tile.coord,
++            zoom: tile.coord.z,
++            tileSize: this.tileSize * overscaling,
++            source: this.id,
++            overscaling: overscaling,
++            angle: this.map.transform.angle,
++            pitch: this.map.transform.pitch,
++            showCollisionBoxes: this.map.showCollisionBoxes
++        };
++
++        if (tile.workerID) {
++            params.rawTileData = tile.rawTileData;
++            this.dispatcher.send('reload tile', params, this._tileLoaded.bind(this, tile), tile.workerID);
+         } else {
+-            var buttons = (e.ctrlKey ? 1 : 2),  // ? ctrl+left button : right button
+-                button = (e.ctrlKey ? 0 : 2);   // ? ctrl+left button : right button
+-            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
++            tile.workerID = this.dispatcher.send('load tile', params, this._tileLoaded.bind(this, tile));
+         }
+     },
+ 
+-    _drainInertiaBuffer: function () {
+-        var inertia = this._inertia,
+-            now = Date.now(),
+-            cutoff = 160;   //msec
+-
+-        while (inertia.length > 0 && now - inertia[0][0] > cutoff)
+-            inertia.shift();
+-    }
+-
+-};
++    _tileLoaded: function(tile, err, data) {
++        if (tile.aborted)
++            return;
+ 
++        if (err) {
++            tile.errored = true;
++            this.fire('tile.error', {tile: tile, error: err});
++            return;
++        }
+ 
+-/**
+- * Rotate start event. This event is emitted at the start of a user-initiated rotate interaction.
+- *
+- * @event rotatestart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++        tile.loadVectorData(data, this.map.style);
+ 
+-/**
+- * Rotate event. This event is emitted repeatedly during a user-initiated rotate interaction.
+- *
+- * @event rotate
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++        if (tile.redoWhenDone) {
++            tile.redoWhenDone = false;
++            tile.redoPlacement(this);
++        }
+ 
+-/**
+- * Rotate end event. This event is emitted at the end of a user-initiated rotate interaction.
+- *
+- * @event rotateend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++        this.fire('tile.load', {tile: tile});
++        this.fire('tile.stats', data.bucketStats);
++    },
+ 
+-},{"../../util/dom":338,"../../util/util":349,"point-geometry":404}],326:[function(require,module,exports){
+-'use strict';
++    _abortTile: function(tile) {
++        tile.aborted = true;
++        this.dispatcher.send('abort tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    },
+ 
+-module.exports = KeyboardHandler;
++    _addTile: function(tile) {
++        this.fire('tile.add', {tile: tile});
++    },
+ 
++    _removeTile: function(tile) {
++        this.fire('tile.remove', {tile: tile});
++    },
+ 
+-var panDelta = 80,
+-    rotateDelta = 2,
+-    pitchDelta = 5;
++    _unloadTile: function(tile) {
++        tile.unloadVectorData(this.map.painter);
++        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    },
+ 
+-/**
+- * The `KeyboardHandler` allows a user to zoom, rotate, and pan the map using
+- * following keyboard shortcuts:
+- *  * `=` / `+`: increase zoom level by 1
+- *  * `Shift-=` / `Shift-+`: increase zoom level by 2
+- *  * `-`: decrease zoom level by 1
+- *  * `Shift--`: decrease zoom level by 2
+- *  * Arrow keys: pan by 80 pixels
+- *  * `Shift+⇢`: increase rotation by 2 degrees
+- *  * `Shift+⇠`: decrease rotation by 2 degrees
+- *  * `Shift+⇡`: increase pitch by 5 degrees
+- *  * `Shift+⇣`: decrease pitch by 5 degrees
+- * @class KeyboardHandler
+- */
+-function KeyboardHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++    redoPlacement: Source.redoPlacement,
+ 
+-    this._onKeyDown = this._onKeyDown.bind(this);
+-}
++    _redoTilePlacement: function(tile) {
++        tile.redoPlacement(this);
++    }
++});
+ 
+-KeyboardHandler.prototype = {
++},{"../util/evented":354,"../util/mapbox":359,"../util/util":362,"./source":292}],297:[function(require,module,exports){
++'use strict';
+ 
+-    _enabled: false,
++var util = require('../util/util');
++var Tile = require('./tile');
++var TileCoord = require('./tile_coord');
++var LngLat = require('../geo/lng_lat');
++var Point = require('point-geometry');
++var Evented = require('../util/evented');
++var ajax = require('../util/ajax');
++var EXTENT = require('../data/bucket').EXTENT;
++var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('../render/vertex_array_object');
+ 
+-    /**
+-     * Returns the current enabled/disabled state of keyboard interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
+-    },
++module.exports = VideoSource;
+ 
+-    /**
+-     * Enable the ability to interact with the map using keyboard input.
+-     * @example
+-     * map.keyboard.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('keydown', this._onKeyDown, false);
+-        this._enabled = true;
+-    },
++/**
++ * Create a Video data source instance given an options object
++ * @class VideoSource
++ * @param {Object} [options]
++ * @param {Array<string>} options.urls An array of URLs to video files
++ * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
++ * @example
++ * var sourceObj = new mapboxgl.VideoSource({
++ *    url: [
++ *        'https://www.mapbox.com/videos/baltimore-smoke.mp4',
++ *        'https://www.mapbox.com/videos/baltimore-smoke.webm'
++ *    ],
++ *    coordinates: [
++ *        [-76.54335737228394, 39.18579907229748],
++ *        [-76.52803659439087, 39.1838364847587],
++ *        [-76.5295386314392, 39.17683392507606],
++ *        [-76.54520273208618, 39.17876344106642]
++ *    ]
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
++ */
++function VideoSource(options) {
++    this.urls = options.urls;
++    this.coordinates = options.coordinates;
+ 
+-    /**
+-     * Disable the ability to interact with the map using keyboard input.
+-     * @example
+-     * map.keyboard.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('keydown', this._onKeyDown);
+-        this._enabled = false;
+-    },
++    ajax.getVideo(options.urls, function(err, video) {
++        // @TODO handle errors via event.
++        if (err) return;
+ 
+-    _onKeyDown: function (e) {
+-        if (e.altKey || e.ctrlKey || e.metaKey) return;
++        this.video = video;
++        this.video.loop = true;
+ 
+-        var map = this._map,
+-            eventData = { originalEvent: e };
++        var loopID;
+ 
+-        switch (e.keyCode) {
+-        case 61:
+-        case 107:
+-        case 171:
+-        case 187:
+-            map.zoomTo(Math.round(map.getZoom()) + (e.shiftKey ? 2 : 1), eventData);
+-            break;
++        // start repainting when video starts playing
++        this.video.addEventListener('playing', function() {
++            loopID = this.map.style.animationLoop.set(Infinity);
++            this.map._rerender();
++        }.bind(this));
+ 
+-        case 189:
+-        case 109:
+-        case 173:
+-            map.zoomTo(Math.round(map.getZoom()) - (e.shiftKey ? 2 : 1), eventData);
+-            break;
++        // stop repainting when video stops
++        this.video.addEventListener('pause', function() {
++            this.map.style.animationLoop.cancel(loopID);
++        }.bind(this));
+ 
+-        case 37:
+-            if (e.shiftKey) {
+-                map.easeTo({ bearing: map.getBearing() - rotateDelta }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([-panDelta, 0], eventData);
+-            }
+-            break;
++        this._loaded = true;
+ 
+-        case 39:
+-            if (e.shiftKey) {
+-                map.easeTo({ bearing: map.getBearing() + rotateDelta }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([panDelta, 0], eventData);
+-            }
+-            break;
++        if (this.map) {
++            this.video.play();
++            this.setCoordinates(options.coordinates);
++        }
++    }.bind(this));
++}
+ 
+-        case 38:
+-            if (e.shiftKey) {
+-                map.easeTo({ pitch: map.getPitch() + pitchDelta }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([0, -panDelta], eventData);
+-            }
+-            break;
++VideoSource.prototype = util.inherit(Evented, /** @lends VideoSource.prototype */{
++    roundZoom: true,
+ 
+-        case 40:
+-            if (e.shiftKey) {
+-                map.easeTo({ pitch: Math.max(map.getPitch() - pitchDelta, 0) }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([0, panDelta], eventData);
+-            }
+-            break;
++    /**
++     * Return the HTML video element.
++     *
++     * @returns {Object}
++     */
++    getVideo: function() {
++        return this.video;
++    },
++
++    onAdd: function(map) {
++        this.map = map;
++        if (this.video) {
++            this.video.play();
++            this.setCoordinates(this.coordinates);
+         }
+-    }
+-};
++    },
+ 
+-},{}],327:[function(require,module,exports){
+-'use strict';
++    /**
++     * Update video coordinates and rerender map
++     *
++     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
++     * @returns {VideoSource} this
++     */
++    setCoordinates: function(coordinates) {
++        this.coordinates = coordinates;
+ 
+-var DOM = require('../../util/dom'),
+-    browser = require('../../util/browser'),
+-    util = require('../../util/util');
++        // Calculate which mercator tile is suitable for rendering the video in
++        // and create a buffer with the corner coordinates. These coordinates
++        // may be outside the tile, because raster tiles aren't clipped when rendering.
+ 
+-module.exports = ScrollZoomHandler;
++        var map = this.map;
++        var cornerZ0Coords = coordinates.map(function(coord) {
++            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
++        });
+ 
++        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
++        centerCoord.column = Math.round(centerCoord.column);
++        centerCoord.row = Math.round(centerCoord.row);
+ 
+-var ua = typeof navigator !== 'undefined' ? navigator.userAgent.toLowerCase() : '',
+-    firefox = ua.indexOf('firefox') !== -1,
+-    safari = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') === -1;
+ 
++        var tileCoords = cornerZ0Coords.map(function(coord) {
++            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
++            return new Point(
++                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
++                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
++        });
+ 
+-/**
+- * The `ScrollZoomHandler` allows a user to zoom the map by scrolling.
+- * @class ScrollZoomHandler
+- */
+-function ScrollZoomHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++        var maxInt16 = 32767;
++        var array = new RasterBoundsArray();
++        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
++        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
++        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
++        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
+ 
+-    util.bindHandlers(this);
+-}
++        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
++        this.tile.buckets = {};
+ 
+-ScrollZoomHandler.prototype = {
++        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
++        this.tile.boundsVAO = new VertexArrayObject();
+ 
+-    _enabled: false,
++        this.fire('change');
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "scroll to zoom" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
++        return this;
+     },
+ 
+-    /**
+-     * Enable the "scroll to zoom" interaction.
+-     * @example
+-     *   map.scrollZoom.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('wheel', this._onWheel, false);
+-        this._el.addEventListener('mousewheel', this._onWheel, false);
+-        this._enabled = true;
++    loaded: function() {
++        return this.video && this.video.readyState >= 2;
+     },
+ 
+-    /**
+-     * Disable the "scroll to zoom" interaction.
+-     * @example
+-     *   map.scrollZoom.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('wheel', this._onWheel);
+-        this._el.removeEventListener('mousewheel', this._onWheel);
+-        this._enabled = false;
++    update: function() {
++        // noop
+     },
+ 
+-    _onWheel: function (e) {
+-        var value;
++    reload: function() {
++        // noop
++    },
+ 
+-        if (e.type === 'wheel') {
+-            value = e.deltaY;
+-            // Firefox doubles the values on retina screens...
+-            if (firefox && e.deltaMode === window.WheelEvent.DOM_DELTA_PIXEL) value /= browser.devicePixelRatio;
+-            if (e.deltaMode === window.WheelEvent.DOM_DELTA_LINE) value *= 40;
++    prepare: function() {
++        if (!this._loaded) return;
++        if (this.video.readyState < 2) return; // not enough data for current position
+ 
+-        } else if (e.type === 'mousewheel') {
+-            value = -e.wheelDeltaY;
+-            if (safari) value = value / 3;
++        var gl = this.map.painter.gl;
++        if (!this.tile.texture) {
++            this.tile.texture = gl.createTexture();
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
++        } else {
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
+         }
+ 
+-        var now = browser.now(),
+-            timeDelta = now - (this._time || 0);
++        this._currentTime = this.video.currentTime;
++    },
+ 
+-        this._pos = DOM.mousePos(this._el, e);
+-        this._time = now;
++    getVisibleCoordinates: function() {
++        if (this.tile) return [this.tile.coord];
++        else return [];
++    },
+ 
+-        if (value !== 0 && (value % 4.000244140625) === 0) {
+-            // This one is definitely a mouse wheel event.
+-            this._type = 'wheel';
+-            // Normalize this value to match trackpad.
+-            value = Math.floor(value / 4);
++    getTile: function() {
++        return this.tile;
++    },
+ 
+-        } else if (value !== 0 && Math.abs(value) < 4) {
+-            // This one is definitely a trackpad event because it is so small.
+-            this._type = 'trackpad';
++    serialize: function() {
++        return {
++            type: 'video',
++            urls: this.urls,
++            coordinates: this.coordinates
++        };
++    }
++});
+ 
+-        } else if (timeDelta > 400) {
+-            // This is likely a new scroll action.
+-            this._type = null;
+-            this._lastValue = value;
++},{"../data/bucket":260,"../data/buffer":265,"../geo/lng_lat":269,"../render/draw_raster":280,"../render/vertex_array_object":286,"../util/ajax":347,"../util/evented":354,"../util/util":362,"./tile":293,"./tile_coord":294,"point-geometry":400}],298:[function(require,module,exports){
++'use strict';
+ 
+-            // Start a timeout in case this was a singular event, and dely it by up to 40ms.
+-            this._timeout = setTimeout(this._onTimeout, 40);
++var Actor = require('../util/actor');
++var WorkerTile = require('./worker_tile');
++var StyleLayer = require('../style/style_layer');
++var util = require('../util/util');
++var ajax = require('../util/ajax');
++var vt = require('vector-tile');
++var Protobuf = require('pbf');
++var supercluster = require('supercluster');
+ 
+-        } else if (!this._type) {
+-            // This is a repeating event, but we don't know the type of event just yet.
+-            // If the delta per time is small, we assume it's a fast trackpad; otherwise we switch into wheel mode.
+-            this._type = (Math.abs(timeDelta * value) < 200) ? 'trackpad' : 'wheel';
++var geojsonvt = require('geojson-vt');
++var rewind = require('geojson-rewind');
++var GeoJSONWrapper = require('./geojson_wrapper');
++var vtpbf = require('vt-pbf');
+ 
+-            // Make sure our delayed event isn't fired again, because we accumulate
+-            // the previous event (which was less than 40ms ago) into this event.
+-            if (this._timeout) {
+-                clearTimeout(this._timeout);
+-                this._timeout = null;
+-                value += this._lastValue;
+-            }
+-        }
++module.exports = function(self) {
++    return new Worker(self);
++};
+ 
+-        // Slow down zoom if shift key is held for more precise zooming
+-        if (e.shiftKey && value) value = value / 4;
++function Worker(self) {
++    this.self = self;
++    this.actor = new Actor(self, this);
++    this.loading = {};
+ 
+-        // Only fire the callback if we actually know what type of scrolling device the user uses.
+-        if (this._type) this._zoom(-value, e);
++    this.loaded = {};
++    this.geoJSONIndexes = {};
++}
+ 
+-        e.preventDefault();
+-    },
++util.extend(Worker.prototype, {
++    'set layers': function(layers) {
++        this.layers = {};
++        var that = this;
+ 
+-    _onTimeout: function () {
+-        this._type = 'wheel';
+-        this._zoom(-this._lastValue);
+-    },
++        // Filter layers and create an id -> layer map
++        var childLayerIndicies = [];
++        for (var i = 0; i < layers.length; i++) {
++            var layer = layers[i];
++            if (layer.type === 'fill' || layer.type === 'line' || layer.type === 'circle' || layer.type === 'symbol') {
++                if (layer.ref) {
++                    childLayerIndicies.push(i);
++                } else {
++                    setLayer(layer);
++                }
++            }
++        }
+ 
+-    _zoom: function (delta, e) {
+-        if (delta === 0) return;
+-        var map = this._map;
++        // Create an instance of StyleLayer per layer
++        for (var j = 0; j < childLayerIndicies.length; j++) {
++            setLayer(layers[childLayerIndicies[j]]);
++        }
+ 
+-        // Scale by sigmoid of scroll wheel delta.
+-        var scale = 2 / (1 + Math.exp(-Math.abs(delta / 100)));
+-        if (delta < 0 && scale !== 0) scale = 1 / scale;
++        function setLayer(serializedLayer) {
++            var styleLayer = StyleLayer.create(
++                serializedLayer,
++                serializedLayer.ref && that.layers[serializedLayer.ref]
++            );
++            styleLayer.updatePaintTransitions({}, {transition: false});
++            that.layers[styleLayer.id] = styleLayer;
++        }
+ 
+-        var fromScale = map.ease ? map.ease.to : map.transform.scale,
+-            targetZoom = map.transform.scaleZoom(fromScale * scale);
++        this.layerFamilies = createLayerFamilies(this.layers);
++    },
+ 
+-        map.zoomTo(targetZoom, {
+-            duration: 0,
+-            around: map.unproject(this._pos),
+-            delayEndEvents: 200
+-        }, { originalEvent: e });
+-    }
+-};
++    'update layers': function(layers) {
++        var that = this;
++        var id;
++        var layer;
+ 
++        // Update ref parents
++        for (id in layers) {
++            layer = layers[id];
++            if (layer.ref) updateLayer(layer);
++        }
+ 
+-/**
+- * Zoom start event. This event is emitted just before the map begins a transition from one
+- * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event zoomstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++        // Update ref children
++        for (id in layers) {
++            layer = layers[id];
++            if (!layer.ref) updateLayer(layer);
++        }
+ 
+-/**
+- * Zoom event. This event is emitted repeatedly during animated transitions from one zoom level to
+- * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event zoom
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++        function updateLayer(layer) {
++            var refLayer = that.layers[layer.ref];
++            if (that.layers[layer.id]) {
++                that.layers[layer.id].set(layer, refLayer);
++            } else {
++                that.layers[layer.id] = StyleLayer.create(layer, refLayer);
++            }
++            that.layers[layer.id].updatePaintTransitions({}, {transition: false});
++        }
+ 
+-/**
+- * Zoom end event. This event is emitted just after the map completes a transition from one
+- * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event zoomend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++        this.layerFamilies = createLayerFamilies(this.layers);
++    },
+ 
+-},{"../../util/browser":335,"../../util/dom":338,"../../util/util":349}],328:[function(require,module,exports){
+-'use strict';
++    'load tile': function(params, callback) {
++        var source = params.source,
++            uid = params.uid;
+ 
+-var DOM = require('../../util/dom'),
+-    util = require('../../util/util');
++        if (!this.loading[source])
++            this.loading[source] = {};
+ 
+-module.exports = TouchZoomRotateHandler;
+ 
+-var inertiaLinearity = 0.15,
+-    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
+-    inertiaDeceleration = 12, // scale / s^2
+-    inertiaMaxSpeed = 2.5, // scale / s
+-    significantScaleThreshold = 0.15,
+-    significantRotateThreshold = 4;
++        var tile = this.loading[source][uid] = new WorkerTile(params);
+ 
++        tile.xhr = ajax.getArrayBuffer(params.url, done.bind(this));
+ 
+-/**
+- * The `TouchZoomRotateHandler` allows a user to zoom and rotate the map by
+- * pinching on a touchscreen.
+- * @class TouchZoomRotateHandler
+- */
+-function TouchZoomRotateHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++        function done(err, data) {
++            delete this.loading[source][uid];
+ 
+-    util.bindHandlers(this);
+-}
++            if (err) return callback(err);
+ 
+-TouchZoomRotateHandler.prototype = {
++            tile.data = new vt.VectorTile(new Protobuf(new Uint8Array(data)));
++            tile.parse(tile.data, this.layerFamilies, this.actor, data, callback);
+ 
+-    _enabled: false,
++            this.loaded[source] = this.loaded[source] || {};
++            this.loaded[source][uid] = tile;
++        }
++    },
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "pinch to rotate and zoom" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
++    'reload tile': function(params, callback) {
++        var loaded = this.loaded[params.source],
++            uid = params.uid;
++        if (loaded && loaded[uid]) {
++            var tile = loaded[uid];
++            tile.parse(tile.data, this.layerFamilies, this.actor, params.rawTileData, callback);
++        }
+     },
+ 
+-    /**
+-     * Enable the "pinch to rotate and zoom" interaction.
+-     * @example
+-     *   map.touchZoomRotate.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('touchstart', this._onStart, false);
+-        this._enabled = true;
++    'abort tile': function(params) {
++        var loading = this.loading[params.source],
++            uid = params.uid;
++        if (loading && loading[uid]) {
++            loading[uid].xhr.abort();
++            delete loading[uid];
++        }
+     },
+ 
+-    /**
+-     * Disable the "pinch to rotate and zoom" interaction.
+-     * @example
+-     *   map.touchZoomRotate.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('touchstart', this._onStart);
+-        this._enabled = false;
++    'remove tile': function(params) {
++        var loaded = this.loaded[params.source],
++            uid = params.uid;
++        if (loaded && loaded[uid]) {
++            delete loaded[uid];
++        }
+     },
+ 
+-    /**
+-     * Disable the "pinch to rotate" interaction, leaving the "pinch to zoom"
+-     * interaction enabled.
+-     * @example
+-     *   map.touchZoomRotate.disableRotation();
+-     */
+-    disableRotation: function() {
+-        this._rotationDisabled = true;
++    'redo placement': function(params, callback) {
++        var loaded = this.loaded[params.source],
++            loading = this.loading[params.source],
++            uid = params.uid;
++
++        if (loaded && loaded[uid]) {
++            var tile = loaded[uid];
++            var result = tile.redoPlacement(params.angle, params.pitch, params.showCollisionBoxes);
++
++            if (result.result) {
++                callback(null, result.result, result.transferables);
++            }
++
++        } else if (loading && loading[uid]) {
++            loading[uid].angle = params.angle;
++        }
+     },
+ 
+-    /**
+-     * Enable the "pinch to rotate" interaction, undoing a call to
+-     * `disableRotation`.
+-     * @example
+-     *   map.touchZoomRotate.enable();
+-     *   map.touchZoomRotate.enableRotation();
+-     */
+-    enableRotation: function() {
+-        this._rotationDisabled = false;
++    'parse geojson': function(params, callback) {
++        var indexData = function(err, data) {
++            rewind(data, true);
++            if (err) return callback(err);
++            if (typeof data != 'object') {
++                return callback(new Error("Input data is not a valid GeoJSON object."));
++            }
++            try {
++                this.geoJSONIndexes[params.source] = params.cluster ?
++                    supercluster(params.superclusterOptions).load(data.features) :
++                    geojsonvt(data, params.geojsonVtOptions);
++            } catch (err) {
++                return callback(err);
++            }
++            callback(null);
++        }.bind(this);
++
++        // Not, because of same origin issues, urls must either include an
++        // explicit origin or absolute path.
++        // ie: /foo/bar.json or http://example.com/bar.json
++        // but not ../foo/bar.json
++        if (params.url) {
++            ajax.getJSON(params.url, indexData);
++        } else if (typeof params.data === 'string') {
++            indexData(null, JSON.parse(params.data));
++        } else {
++            return callback(new Error("Input data is not a valid GeoJSON object."));
++        }
+     },
+ 
+-    _onStart: function (e) {
+-        if (e.touches.length !== 2) return;
++    'load geojson tile': function(params, callback) {
++        var source = params.source,
++            coord = params.coord;
++
++        if (!this.geoJSONIndexes[source]) return callback(null, null); // we couldn't load the file
++
++        // console.time('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
++
++        var geoJSONTile = this.geoJSONIndexes[source].getTile(Math.min(coord.z, params.maxZoom), coord.x, coord.y);
+ 
+-        var p0 = DOM.mousePos(this._el, e.touches[0]),
+-            p1 = DOM.mousePos(this._el, e.touches[1]);
++        // console.timeEnd('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
+ 
+-        this._startVec = p0.sub(p1);
+-        this._startScale = this._map.transform.scale;
+-        this._startBearing = this._map.transform.bearing;
+-        this._gestureIntent = undefined;
+-        this._inertia = [];
++        // if (!geoJSONTile) console.log('not found', this.geoJSONIndexes[source], coord);
+ 
+-        document.addEventListener('touchmove', this._onMove, false);
+-        document.addEventListener('touchend', this._onEnd, false);
+-    },
++        var tile = geoJSONTile ? new WorkerTile(params) : undefined;
+ 
+-    _onMove: function (e) {
+-        if (e.touches.length !== 2) return;
++        this.loaded[source] = this.loaded[source] || {};
++        this.loaded[source][params.uid] = tile;
+ 
+-        var p0 = DOM.mousePos(this._el, e.touches[0]),
+-            p1 = DOM.mousePos(this._el, e.touches[1]),
+-            p = p0.add(p1).div(2),
+-            vec = p0.sub(p1),
+-            scale = vec.mag() / this._startVec.mag(),
+-            bearing = this._rotationDisabled ? 0 : vec.angleWith(this._startVec) * 180 / Math.PI,
+-            map = this._map;
++        if (geoJSONTile) {
++            var geojsonWrapper = new GeoJSONWrapper(geoJSONTile.features);
++            geojsonWrapper.name = '_geojsonTileLayer';
++            var rawTileData = vtpbf({ layers: { '_geojsonTileLayer': geojsonWrapper }}).buffer;
++            tile.parse(geojsonWrapper, this.layerFamilies, this.actor, rawTileData, callback);
++        } else {
++            return callback(null, null); // nothing in the given tile
++        }
++    }
++});
+ 
+-        // Determine 'intent' by whichever threshold is surpassed first,
+-        // then keep that state for the duration of this gesture.
+-        if (!this._gestureIntent) {
+-            var scalingSignificantly = (Math.abs(1 - scale) > significantScaleThreshold),
+-                rotatingSignificantly = (Math.abs(bearing) > significantRotateThreshold);
++function createLayerFamilies(layers) {
++    var families = {};
+ 
+-            if (rotatingSignificantly) {
+-                this._gestureIntent = 'rotate';
+-            } else if (scalingSignificantly) {
+-                this._gestureIntent = 'zoom';
+-            }
++    for (var layerId in layers) {
++        var layer = layers[layerId];
++        var parentLayerId = layer.ref || layer.id;
++        var parentLayer = layers[parentLayerId];
+ 
+-            if (this._gestureIntent) {
+-                this._startVec = vec;
+-                this._startScale = map.transform.scale;
+-                this._startBearing = map.transform.bearing;
+-            }
++        if (parentLayer.layout && parentLayer.layout.visibility === 'none') continue;
+ 
++        families[parentLayerId] = families[parentLayerId] || [];
++        if (layerId === parentLayerId) {
++            families[parentLayerId].unshift(layer);
+         } else {
+-            var param = { duration: 0, around: map.unproject(p) };
++            families[parentLayerId].push(layer);
++        }
++    }
+ 
+-            if (this._gestureIntent === 'rotate') {
+-                param.bearing = this._startBearing + bearing;
+-            }
+-            if (this._gestureIntent === 'zoom' || this._gestureIntent === 'rotate') {
+-                param.zoom = map.transform.scaleZoom(this._startScale * scale);
+-            }
++    return families;
++}
+ 
+-            map.stop();
+-            this._drainInertiaBuffer();
+-            this._inertia.push([Date.now(), scale, p]);
++},{"../style/style_layer":306,"../util/actor":346,"../util/ajax":347,"../util/util":362,"./geojson_wrapper":288,"./worker_tile":299,"geojson-rewind":104,"geojson-vt":108,"pbf":394,"supercluster":438,"vector-tile":456,"vt-pbf":462}],299:[function(require,module,exports){
++'use strict';
+ 
+-            map.easeTo(param, { originalEvent: e });
+-        }
++var FeatureIndex = require('../data/feature_index');
++var CollisionTile = require('../symbol/collision_tile');
++var Bucket = require('../data/bucket');
++var CollisionBoxArray = require('../symbol/collision_box');
++var DictionaryCoder = require('../util/dictionary_coder');
+ 
+-        e.preventDefault();
+-    },
++module.exports = WorkerTile;
+ 
+-    _onEnd: function (e) {
+-        document.removeEventListener('touchmove', this._onMove);
+-        document.removeEventListener('touchend', this._onEnd);
+-        this._drainInertiaBuffer();
++function WorkerTile(params) {
++    this.coord = params.coord;
++    this.uid = params.uid;
++    this.zoom = params.zoom;
++    this.tileSize = params.tileSize;
++    this.source = params.source;
++    this.overscaling = params.overscaling;
++    this.angle = params.angle;
++    this.pitch = params.pitch;
++    this.showCollisionBoxes = params.showCollisionBoxes;
++}
+ 
+-        var inertia = this._inertia,
+-            map = this._map;
++WorkerTile.prototype.parse = function(data, layerFamilies, actor, rawTileData, callback) {
+ 
+-        if (inertia.length < 2) {
+-            map.snapToNorth({}, { originalEvent: e });
+-            return;
+-        }
++    this.status = 'parsing';
++    this.data = data;
+ 
+-        var last = inertia[inertia.length - 1],
+-            first = inertia[0],
+-            lastScale = map.transform.scaleZoom(this._startScale * last[1]),
+-            firstScale = map.transform.scaleZoom(this._startScale * first[1]),
+-            scaleOffset = lastScale - firstScale,
+-            scaleDuration = (last[0] - first[0]) / 1000,
+-            p = last[2];
++    this.collisionBoxArray = new CollisionBoxArray();
++    var collisionTile = new CollisionTile(this.angle, this.pitch, this.collisionBoxArray);
++    var featureIndex = new FeatureIndex(this.coord, this.overscaling, collisionTile, data.layers);
++    var sourceLayerCoder = new DictionaryCoder(data.layers ? Object.keys(data.layers).sort() : ['_geojsonTileLayer']);
+ 
+-        if (scaleDuration === 0 || lastScale === firstScale) {
+-            map.snapToNorth({}, { originalEvent: e });
+-            return;
++    var stats = { _total: 0 };
++
++    var tile = this;
++    var bucketsById = {};
++    var bucketsBySourceLayer = {};
++    var i;
++    var layer;
++    var sourceLayerId;
++    var bucket;
++
++    // Map non-ref layers to buckets.
++    var bucketIndex = 0;
++    for (var layerId in layerFamilies) {
++        layer = layerFamilies[layerId][0];
++
++        if (layer.source !== this.source) continue;
++        if (layer.ref) continue;
++        if (layer.minzoom && this.zoom < layer.minzoom) continue;
++        if (layer.maxzoom && this.zoom >= layer.maxzoom) continue;
++        if (layer.layout && layer.layout.visibility === 'none') continue;
++        if (data.layers && !data.layers[layer.sourceLayer]) continue;
++
++        bucket = Bucket.create({
++            layer: layer,
++            index: bucketIndex++,
++            childLayers: layerFamilies[layerId],
++            zoom: this.zoom,
++            overscaling: this.overscaling,
++            showCollisionBoxes: this.showCollisionBoxes,
++            collisionBoxArray: this.collisionBoxArray,
++            sourceLayerIndex: sourceLayerCoder.encode(layer.sourceLayer || '_geojsonTileLayer')
++        });
++        bucket.createFilter();
++
++        bucketsById[layer.id] = bucket;
++
++        if (data.layers) { // vectortile
++            sourceLayerId = layer.sourceLayer;
++            bucketsBySourceLayer[sourceLayerId] = bucketsBySourceLayer[sourceLayerId] || {};
++            bucketsBySourceLayer[sourceLayerId][layer.id] = bucket;
+         }
++    }
+ 
+-        // calculate scale/s speed and adjust for increased initial animation speed when easing
+-        var speed = scaleOffset * inertiaLinearity / scaleDuration; // scale/s
++    // read each layer, and sort its features into buckets
++    if (data.layers) { // vectortile
++        for (sourceLayerId in bucketsBySourceLayer) {
++            layer = data.layers[sourceLayerId];
++            if (layer) {
++                sortLayerIntoBuckets(layer, bucketsBySourceLayer[sourceLayerId]);
++            }
++        }
++    } else { // geojson
++        sortLayerIntoBuckets(data, bucketsById);
++    }
+ 
+-        if (Math.abs(speed) > inertiaMaxSpeed) {
+-            if (speed > 0) {
+-                speed = inertiaMaxSpeed;
+-            } else {
+-                speed = -inertiaMaxSpeed;
++    function sortLayerIntoBuckets(layer, buckets) {
++        for (var i = 0; i < layer.length; i++) {
++            var feature = layer.feature(i);
++            feature.index = i;
++            for (var id in buckets) {
++                if (buckets[id].filter(feature))
++                    buckets[id].features.push(feature);
+             }
+         }
++    }
+ 
+-        var duration = Math.abs(speed / (inertiaDeceleration * inertiaLinearity)) * 1000,
+-            targetScale = lastScale + speed * duration / 2000;
++    var buckets = [],
++        symbolBuckets = this.symbolBuckets = [],
++        otherBuckets = [];
+ 
+-        if (targetScale < 0) {
+-            targetScale = 0;
+-        }
++    featureIndex.bucketLayerIDs = {};
+ 
+-        map.easeTo({
+-            zoom: targetScale,
+-            duration: duration,
+-            easing: inertiaEasing,
+-            around: map.unproject(p)
+-        }, { originalEvent: e });
+-    },
++    for (var id in bucketsById) {
++        bucket = bucketsById[id];
++        if (bucket.features.length === 0) continue;
+ 
+-    _drainInertiaBuffer: function() {
+-        var inertia = this._inertia,
+-            now = Date.now(),
+-            cutoff = 160; // msec
++        featureIndex.bucketLayerIDs[bucket.index] = bucket.childLayers.map(getLayerId);
+ 
+-        while (inertia.length > 2 && now - inertia[0][0] > cutoff) inertia.shift();
++        buckets.push(bucket);
++
++        if (bucket.type === 'symbol')
++            symbolBuckets.push(bucket);
++        else
++            otherBuckets.push(bucket);
+     }
+-};
+ 
+-},{"../../util/dom":338,"../../util/util":349}],329:[function(require,module,exports){
+-'use strict';
++    var icons = {};
++    var stacks = {};
++    var deps = 0;
+ 
+-/*
+- * Adds the map's position to its page's location hash.
+- * Passed as an option to the map object.
+- *
+- * @class mapboxgl.Hash
+- * @returns {Hash} `this`
+- */
+-module.exports = Hash;
+ 
+-var util = require('../util/util');
++    if (symbolBuckets.length > 0) {
+ 
+-function Hash() {
+-    util.bindAll([
+-        '_onHashChange',
+-        '_updateHash'
+-    ], this);
+-}
++        // Get dependencies for symbol buckets
++        for (i = symbolBuckets.length - 1; i >= 0; i--) {
++            symbolBuckets[i].updateIcons(icons);
++            symbolBuckets[i].updateFont(stacks);
++        }
+ 
+-Hash.prototype = {
+-    /*
+-     * Map element to listen for coordinate changes
+-     *
+-     * @param {Object} map
+-     * @returns {Hash} `this`
+-     */
+-    addTo: function(map) {
+-        this._map = map;
+-        window.addEventListener('hashchange', this._onHashChange, false);
+-        this._map.on('moveend', this._updateHash);
+-        return this;
+-    },
++        for (var fontName in stacks) {
++            stacks[fontName] = Object.keys(stacks[fontName]).map(Number);
++        }
++        icons = Object.keys(icons);
+ 
+-    /*
+-     * Removes hash
+-     *
+-     * @returns {Popup} `this`
+-     */
+-    remove: function() {
+-        window.removeEventListener('hashchange', this._onHashChange, false);
+-        this._map.off('moveend', this._updateHash);
+-        delete this._map;
+-        return this;
+-    },
++        actor.send('get glyphs', {uid: this.uid, stacks: stacks}, function(err, newStacks) {
++            stacks = newStacks;
++            gotDependency(err);
++        });
+ 
+-    _onHashChange: function() {
+-        var loc = location.hash.replace('#', '').split('/');
+-        if (loc.length >= 3) {
+-            this._map.jumpTo({
+-                center: [+loc[2], +loc[1]],
+-                zoom: +loc[0],
+-                bearing: +(loc[3] || 0)
++        if (icons.length) {
++            actor.send('get icons', {icons: icons}, function(err, newIcons) {
++                icons = newIcons;
++                gotDependency(err);
+             });
+-            return true;
++        } else {
++            gotDependency();
+         }
+-        return false;
+-    },
++    }
+ 
+-    _updateHash: function() {
+-        var center = this._map.getCenter(),
+-            zoom = this._map.getZoom(),
+-            bearing = this._map.getBearing(),
+-            precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2)),
++    // immediately parse non-symbol buckets (they have no dependencies)
++    for (i = otherBuckets.length - 1; i >= 0; i--) {
++        parseBucket(this, otherBuckets[i]);
++    }
+ 
+-            hash = '#' + (Math.round(zoom * 100) / 100) +
+-                '/' + center.lat.toFixed(precision) +
+-                '/' + center.lng.toFixed(precision) +
+-                (bearing ? '/' + (Math.round(bearing * 10) / 10) : '');
++    if (symbolBuckets.length === 0)
++        return done();
+ 
+-        window.history.replaceState('', '', hash);
++    function gotDependency(err) {
++        if (err) return callback(err);
++        deps++;
++        if (deps === 2) {
++            // all symbol bucket dependencies fetched; parse them in proper order
++            for (var i = symbolBuckets.length - 1; i >= 0; i--) {
++                parseBucket(tile, symbolBuckets[i]);
++            }
++            done();
++        }
+     }
+-};
+ 
+-},{"../util/util":349}],330:[function(require,module,exports){
+-'use strict';
++    function parseBucket(tile, bucket) {
++        var now = Date.now();
++        bucket.populateBuffers(collisionTile, stacks, icons);
++        var time = Date.now() - now;
+ 
+-var handlers = {
+-    scrollZoom: require('./handler/scroll_zoom'),
+-    boxZoom: require('./handler/box_zoom'),
+-    dragRotate: require('./handler/drag_rotate'),
+-    dragPan: require('./handler/drag_pan'),
+-    keyboard: require('./handler/keyboard'),
+-    doubleClickZoom: require('./handler/dblclick_zoom'),
+-    touchZoomRotate: require('./handler/touch_zoom_rotate')
+-};
+ 
+-var DOM = require('../util/dom'),
+-    util = require('../util/util'),
+-    Point = require('point-geometry');
++        if (bucket.type !== 'symbol') {
++            for (var i = 0; i < bucket.features.length; i++) {
++                var feature = bucket.features[i];
++                featureIndex.insert(feature, feature.index, bucket.sourceLayerIndex, bucket.index);
++            }
++        }
+ 
+-module.exports = Interaction;
++        bucket.features = null;
+ 
+-function Interaction(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++        stats._total += time;
++        stats[bucket.id] = (stats[bucket.id] || 0) + time;
++    }
+ 
+-    for (var name in handlers) {
+-        map[name] = new handlers[name](map);
++    function done() {
++        tile.status = 'done';
++
++        if (tile.redoPlacementAfterDone) {
++            tile.redoPlacement(tile.angle, tile.pitch, null);
++            tile.redoPlacementAfterDone = false;
++        }
++
++        var featureIndex_ = featureIndex.serialize();
++        var collisionTile_ = collisionTile.serialize();
++        var collisionBoxArray = tile.collisionBoxArray.serialize();
++        var transferables = [rawTileData].concat(featureIndex_.transferables).concat(collisionTile_.transferables);
++
++        var nonEmptyBuckets = buckets.filter(isBucketEmpty);
++
++        callback(null, {
++            buckets: nonEmptyBuckets.map(serializeBucket),
++            bucketStats: stats, // TODO put this in a separate message?
++            featureIndex: featureIndex_.data,
++            collisionTile: collisionTile_.data,
++            collisionBoxArray: collisionBoxArray,
++            rawTileData: rawTileData
++        }, getTransferables(nonEmptyBuckets).concat(transferables));
+     }
++};
+ 
+-    util.bindHandlers(this);
+-}
++WorkerTile.prototype.redoPlacement = function(angle, pitch, showCollisionBoxes) {
++    if (this.status !== 'done') {
++        this.redoPlacementAfterDone = true;
++        this.angle = angle;
++        return {};
++    }
+ 
+-Interaction.prototype = {
+-    enable: function () {
+-        var options = this._map.options,
+-            el = this._el;
++    var collisionTile = new CollisionTile(angle, pitch, this.collisionBoxArray);
+ 
+-        for (var name in handlers) {
+-            if (options[name]) this._map[name].enable();
+-        }
++    var buckets = this.symbolBuckets;
+ 
+-        el.addEventListener('mousedown', this._onMouseDown, false);
+-        el.addEventListener('mouseup', this._onMouseUp, false);
+-        el.addEventListener('mousemove', this._onMouseMove, false);
+-        el.addEventListener('touchstart', this._onTouchStart, false);
+-        el.addEventListener('touchend', this._onTouchEnd, false);
+-        el.addEventListener('touchmove', this._onTouchMove, false);
+-        el.addEventListener('touchcancel', this._onTouchCancel, false);
+-        el.addEventListener('click', this._onClick, false);
+-        el.addEventListener('dblclick', this._onDblClick, false);
+-        el.addEventListener('contextmenu', this._onContextMenu, false);
+-    },
++    for (var i = buckets.length - 1; i >= 0; i--) {
++        buckets[i].placeFeatures(collisionTile, showCollisionBoxes);
++    }
+ 
+-    disable: function () {
+-        var options = this._map.options,
+-            el = this._el;
++    var collisionTile_ = collisionTile.serialize();
+ 
+-        for (var name in handlers) {
+-            if (options[name]) this._map[name].disable();
+-        }
++    var nonEmptyBuckets = buckets.filter(isBucketEmpty);
+ 
+-        el.removeEventListener('mousedown', this._onMouseDown);
+-        el.removeEventListener('mouseup', this._onMouseUp);
+-        el.removeEventListener('mousemove', this._onMouseMove);
+-        el.removeEventListener('touchstart', this._onTouchStart);
+-        el.removeEventListener('touchend', this._onTouchEnd);
+-        el.removeEventListener('touchmove', this._onTouchMove);
+-        el.removeEventListener('touchcancel', this._onTouchCancel);
+-        el.removeEventListener('click', this._onClick);
+-        el.removeEventListener('dblclick', this._onDblClick);
+-        el.removeEventListener('contextmenu', this._onContextMenu);
+-    },
++    return {
++        result: {
++            buckets: nonEmptyBuckets.map(serializeBucket),
++            collisionTile: collisionTile_.data
++        },
++        transferables: getTransferables(nonEmptyBuckets).concat(collisionTile_.transferables)
++    };
++};
+ 
+-    _onMouseDown: function (e) {
+-        this._map.stop();
+-        this._startPos = DOM.mousePos(this._el, e);
+-        this._fireMouseEvent('mousedown', e);
+-    },
++function isBucketEmpty(bucket) {
++    for (var programName in bucket.arrayGroups) {
++        var programArrayGroups = bucket.arrayGroups[programName];
++        for (var k = 0; k < programArrayGroups.length; k++) {
++            var programArrayGroup = programArrayGroups[k];
++            for (var layoutOrPaint in programArrayGroup) {
++                var arrays = programArrayGroup[layoutOrPaint];
++                for (var bufferName in arrays) {
++                    if (arrays[bufferName].length > 0) return true;
++                }
++            }
++        }
++    }
++    return false;
++}
+ 
+-    _onMouseUp: function (e) {
+-        var map = this._map,
+-            rotating = map.dragRotate && map.dragRotate.isActive();
++function serializeBucket(bucket) {
++    return bucket.serialize();
++}
+ 
+-        if (this._contextMenuEvent && !rotating) {
+-            this._fireMouseEvent('contextmenu', this._contextMenuEvent);
++function getTransferables(buckets) {
++    var transferables = [];
++    for (var i in buckets) {
++        var bucket = buckets[i];
++        for (var programName in bucket.arrayGroups) {
++            var programArrayGroups = bucket.arrayGroups[programName];
++            for (var k = 0; k < programArrayGroups.length; k++) {
++                var programArrayGroup = programArrayGroups[k];
++                for (var layoutOrPaint in programArrayGroup) {
++                    var arrays = programArrayGroup[layoutOrPaint];
++                    for (var bufferName in arrays) {
++                        transferables.push(arrays[bufferName].arrayBuffer);
++                    }
++                }
++            }
+         }
++    }
++    return transferables;
++}
+ 
+-        this._contextMenuEvent = null;
+-        this._fireMouseEvent('mouseup', e);
+-    },
++function getLayerId(layer) {
++    return layer.id;
++}
+ 
+-    _onMouseMove: function (e) {
+-        var map = this._map,
+-            el = this._el;
++},{"../data/bucket":260,"../data/feature_index":266,"../symbol/collision_box":319,"../symbol/collision_tile":321,"../util/dictionary_coder":353}],300:[function(require,module,exports){
++'use strict';
+ 
+-        if (map.dragPan && map.dragPan.isActive()) return;
+-        if (map.dragRotate && map.dragRotate.isActive()) return;
++module.exports = AnimationLoop;
+ 
+-        var target = e.toElement || e.target;
+-        while (target && target !== el) target = target.parentNode;
+-        if (target !== el) return;
++function AnimationLoop() {
++    this.n = 0;
++    this.times = [];
++}
+ 
+-        this._fireMouseEvent('mousemove', e);
+-    },
++// Are all animations done?
++AnimationLoop.prototype.stopped = function() {
++    this.times = this.times.filter(function(t) {
++        return t.time >= (new Date()).getTime();
++    });
++    return !this.times.length;
++};
+ 
+-    _onTouchStart: function (e) {
+-        this._map.stop();
+-        this._fireTouchEvent('touchstart', e);
++// Add a new animation that will run t milliseconds
++// Returns an id that can be used to cancel it layer
++AnimationLoop.prototype.set = function(t) {
++    this.times.push({ id: this.n, time: t + (new Date()).getTime() });
++    return this.n++;
++};
+ 
+-        if (!e.touches || e.touches.length > 1) return;
++// Cancel an animation
++AnimationLoop.prototype.cancel = function(n) {
++    this.times = this.times.filter(function(t) {
++        return t.id !== n;
++    });
++};
+ 
+-        if (!this._tapped) {
+-            this._tapped = setTimeout(this._onTouchTimeout, 300);
++},{}],301:[function(require,module,exports){
++'use strict';
+ 
+-        } else {
+-            clearTimeout(this._tapped);
+-            this._tapped = null;
+-            this._fireMouseEvent('dblclick', e);
+-        }
+-    },
++var Evented = require('../util/evented');
++var ajax = require('../util/ajax');
++var browser = require('../util/browser');
++var normalizeURL = require('../util/mapbox').normalizeSpriteURL;
+ 
+-    _onTouchMove: function (e) {
+-        this._fireTouchEvent('touchmove', e);
+-    },
++module.exports = ImageSprite;
+ 
+-    _onTouchEnd: function (e) {
+-        this._fireTouchEvent('touchend', e);
+-    },
++function ImageSprite(base) {
++    this.base = base;
++    this.retina = browser.devicePixelRatio > 1;
+ 
+-    _onTouchCancel: function (e) {
+-        this._fireTouchEvent('touchcancel', e);
+-    },
++    var format = this.retina ? '@2x' : '';
+ 
+-    _onTouchTimeout: function () {
+-        this._tapped = null;
+-    },
++    ajax.getJSON(normalizeURL(base, format, '.json'), function(err, data) {
++        if (err) {
++            this.fire('error', {error: err});
++            return;
++        }
+ 
+-    _onClick: function (e) {
+-        var pos = DOM.mousePos(this._el, e);
++        this.data = data;
++        if (this.img) this.fire('load');
++    }.bind(this));
+ 
+-        if (pos.equals(this._startPos)) {
+-            this._fireMouseEvent('click', e);
++    ajax.getImage(normalizeURL(base, format, '.png'), function(err, img) {
++        if (err) {
++            this.fire('error', {error: err});
++            return;
+         }
+-    },
+ 
+-    _onDblClick: function (e) {
+-        this._fireMouseEvent('dblclick', e);
+-        e.preventDefault();
+-    },
++        // premultiply the sprite
++        var data = img.getData();
++        var newdata = img.data = new Uint8Array(data.length);
++        for (var i = 0; i < data.length; i += 4) {
++            var alpha = data[i + 3] / 255;
++            newdata[i + 0] = data[i + 0] * alpha;
++            newdata[i + 1] = data[i + 1] * alpha;
++            newdata[i + 2] = data[i + 2] * alpha;
++            newdata[i + 3] = data[i + 3];
++        }
+ 
+-    _onContextMenu: function (e) {
+-        this._contextMenuEvent = e;
+-        e.preventDefault();
+-    },
++        this.img = img;
++        if (this.data) this.fire('load');
++    }.bind(this));
++}
+ 
+-    _fireMouseEvent: function (type, e) {
+-        var pos = DOM.mousePos(this._el, e);
++ImageSprite.prototype = Object.create(Evented);
+ 
+-        return this._map.fire(type, {
+-            lngLat: this._map.unproject(pos),
+-            point: pos,
+-            originalEvent: e
+-        });
+-    },
++ImageSprite.prototype.toJSON = function() {
++    return this.base;
++};
+ 
+-    _fireTouchEvent: function (type, e) {
+-        var touches = DOM.touchPos(this._el, e),
+-            singular = touches.reduce(function (prev, curr, i, arr) {
+-                return prev.add(curr.div(arr.length));
+-            }, new Point(0, 0));
++ImageSprite.prototype.loaded = function() {
++    return !!(this.data && this.img);
++};
+ 
+-        return this._map.fire(type, {
+-            lngLat: this._map.unproject(singular),
+-            point: singular,
+-            lngLats: touches.map(function(t) { return this._map.unproject(t); }, this),
+-            points: touches,
+-            originalEvent: e
+-        });
++ImageSprite.prototype.resize = function(/*gl*/) {
++    if (browser.devicePixelRatio > 1 !== this.retina) {
++        var newSprite = new ImageSprite(this.base);
++        newSprite.on('load', function() {
++            this.img = newSprite.img;
++            this.data = newSprite.data;
++            this.retina = newSprite.retina;
++        }.bind(this));
+     }
+ };
+ 
++function SpritePosition() {}
++SpritePosition.prototype = { x: 0, y: 0, width: 0, height: 0, pixelRatio: 1, sdf: false };
+ 
+-/**
+- * When an event [fires]{@link #Evented.fire} as a result of a
+- * user interaction, the event will be called with an EventData
+- * object containing the original DOM event along with coordinates of
+- * the event target.
+- *
+- * @typedef {Object} EventData
+- * @property {Event} originalEvent The original DOM event
+- * @property {Point} point The pixel location of the event
+- * @property {LngLat} lngLat The geographic location of the event
+- * @example
+- * map.on('click', function(data) {
+- *   var e = data && data.originalEvent;
+- *   console.log('got click ' + (e ? 'button = ' + e.button : ''));
+- * });
+- */
++ImageSprite.prototype.getSpritePosition = function(name) {
++    if (!this.loaded()) return new SpritePosition();
+ 
+-/**
+- * Mouse down event.
+- *
+- * @event mousedown
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [mousedown event](https://developer.mozilla.org/en-US/docs/Web/Events/mousedown)
+- */
++    var pos = this.data && this.data[name];
++    if (pos && this.img) return pos;
+ 
+-/**
+- * Mouse up event.
+- *
+- * @event mouseup
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [mouseup event](https://developer.mozilla.org/en-US/docs/Web/Events/mouseup)
+- */
++    return new SpritePosition();
++};
+ 
+-/**
+- * Mouse move event.
+- *
+- * @event mousemove
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [mousemouse event](https://developer.mozilla.org/en-US/docs/Web/Events/mousemove)
+- */
++},{"../util/ajax":347,"../util/browser":348,"../util/evented":354,"../util/mapbox":359}],302:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Touch start event.
+- *
+- * @event touchstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchstart event](https://developer.mozilla.org/en-US/docs/Web/Events/touchstart).
+- */
++var parseCSSColor = require('csscolorparser').parseCSSColor;
++var util = require('../util/util');
+ 
+-/**
+- * Touch end event.
+- *
+- * @event touchend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
+- */
++var colorCache = {};
+ 
+-/**
+- * Touch move event.
+- *
+- * @event touchmove
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchmove event](https://developer.mozilla.org/en-US/docs/Web/Events/touchmove).
+- */
++function parseColor(input) {
+ 
+-/**
+- * Touch cancel event.
+- *
+- * @event touchcancel
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
+- */
++    if (colorCache[input]) {
++        return colorCache[input];
+ 
+-/**
+- * Click event.
+- *
+- * @event click
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [click event](https://developer.mozilla.org/en-US/docs/Web/Events/click)
+- */
++    // RGBA array
++    } else if (Array.isArray(input)) {
++        return input;
+ 
+-/**
+- * Double click event.
+- *
+- * @event dblclick
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++    // GL function
++    } else if (input && input.stops) {
++        return util.extend({}, input, {
++            stops: input.stops.map(parseFunctionStopColor)
++        });
+ 
+-/**
+- * Context menu event.
+- *
+- * @event contextmenu
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if available
+- */
++    // Color string
++    } else if (typeof input === 'string') {
++        var parsedColor = parseCSSColor(input);
++        if (!parsedColor) { throw new Error('Invalid color ' + input); }
+ 
+-/**
+- * Load event. This event is emitted immediately after all necessary resources have been downloaded
+- * and the first visually complete rendering has occurred.
+- *
+- * @event load
+- * @memberof Map
+- * @instance
+- * @type {Object}
+- */
++        var output = colorDowngrade(parsedColor);
++        colorCache[input] = output;
++        return output;
+ 
+-/**
+- * Move start event. This event is emitted just before the map begins a transition from one
+- * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event movestart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++    } else {
++        throw new Error('Invalid color ' + input);
++    }
+ 
+-/**
+- * Move event. This event is emitted repeatedly during animated transitions from one view to
+- * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event move
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++}
+ 
+-/**
+- * Move end event. This event is emitted just after the map completes a transition from one
+- * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event moveend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++function parseFunctionStopColor(stop) {
++    return [stop[0], parseColor(stop[1])];
++}
++
++function colorDowngrade(color) {
++    return [color[0] / 255, color[1] / 255, color[2] / 255, color[3] / 1];
++}
++
++module.exports = parseColor;
+ 
+-},{"../util/dom":338,"../util/util":349,"./handler/box_zoom":322,"./handler/dblclick_zoom":323,"./handler/drag_pan":324,"./handler/drag_rotate":325,"./handler/keyboard":326,"./handler/scroll_zoom":327,"./handler/touch_zoom_rotate":328,"point-geometry":404}],331:[function(require,module,exports){
++},{"../util/util":362,"csscolorparser":84}],303:[function(require,module,exports){
+ 'use strict';
+ 
+-var Canvas = require('../util/canvas');
++var Evented = require('../util/evented');
++var StyleLayer = require('./style_layer');
++var ImageSprite = require('./image_sprite');
++var GlyphSource = require('../symbol/glyph_source');
++var SpriteAtlas = require('../symbol/sprite_atlas');
++var LineAtlas = require('../render/line_atlas');
+ var util = require('../util/util');
++var ajax = require('../util/ajax');
++var normalizeURL = require('../util/mapbox').normalizeStyleURL;
+ var browser = require('../util/browser');
+-var Evented = require('../util/evented');
+-var DOM = require('../util/dom');
+-
+-var Style = require('../style/style');
+-var AnimationLoop = require('../style/animation_loop');
+-var Painter = require('../render/painter');
+-
+-var Transform = require('../geo/transform');
+-var Hash = require('./hash');
+-
+-var Interaction = require('./interaction');
+-
+-var Camera = require('./camera');
+-var LngLat = require('../geo/lng_lat');
+-var LngLatBounds = require('../geo/lng_lat_bounds');
+-var Point = require('point-geometry');
+-var Attribution = require('./control/attribution');
+-
+-var defaultMinZoom = 0;
+-var defaultMaxZoom = 20;
+-
+-/**
+- * Creates a map instance. This is usually the beginning of your map:
+- * you tell Mapbox GL JS where to put the map by specifying a `container`
+- * option, and the map's style with `style` and other attributes of the map,
+- * and in return Mapbox GL JS initializes the map on your page and returns
+- * a map variable that lets you programmatically call methods on the map.
+- * @class Map
+- * @param {Object} options
+- * @param {string|Element} options.container HTML element to initialize the map in (or element id as string)
+- * @param {number} [options.minZoom=0] Minimum zoom of the map
+- * @param {number} [options.maxZoom=20] Maximum zoom of the map
+- * @param {Object|string} [options.style] Map style. This must be an an object conforming to the schema described in the [style reference](https://mapbox.com/mapbox-gl-style-spec/), or a URL to a JSON style. To load a style from the Mapbox API, you can use a URL of the form `mapbox://styles/:owner/:style`, where `:owner` is your Mapbox account name and `:style` is the style ID. Or you can use one of the predefined Mapbox styles:
+- *   * `mapbox://styles/mapbox/basic-v8` - Simple and flexible starting template.
+- *   * `mapbox://styles/mapbox/bright-v8` - Template for complex custom basemaps.
+- *   * `mapbox://styles/mapbox/streets-v8` - A ready-to-use basemap, perfect for minor customization or incorporating your own data.
+- *   * `mapbox://styles/mapbox/light-v8` - Subtle light backdrop for data vizualizations.
+- *   * `mapbox://styles/mapbox/dark-v8` - Subtle dark backdrop for data vizualizations.
+- * @param {boolean} [options.hash=false] If `true`, the map will track and update the page URL according to map position
+- * @param {boolean} [options.interactive=true] If `false`, no mouse, touch, or keyboard listeners are attached to the map, so it will not respond to input
+- * @param {number} [options.bearingSnap=7] Snap to north threshold in degrees.
+- * @param {Array} [options.classes] Style class names with which to initialize the map
+- * @param {boolean} [options.attributionControl=true] If `true`, an attribution control will be added to the map.
+- * @param {boolean} [options.failIfMajorPerformanceCaveat=false] If `true`, map creation will fail if the implementation determines that the performance of the created WebGL context would be dramatically lower than expected.
+- * @param {boolean} [options.preserveDrawingBuffer=false] If `true`, The maps canvas can be exported to a PNG using `map.getCanvas().toDataURL();`. This is false by default as a performance optimization.
+- * @param {LngLatBounds|Array<Array<number>>} [options.maxBounds] If set, the map is constrained to the given bounds.
+- * @param {boolean} [options.scrollZoom=true] If `true`, enable the "scroll to zoom" interaction (see `ScrollZoomHandler`)
+- * @param {boolean} [options.boxZoom=true] If `true`, enable the "box zoom" interaction (see `BoxZoomHandler`)
+- * @param {boolean} [options.dragRotate=true] If `true`, enable the "drag to rotate" interaction (see `DragRotateHandler`).
+- * @param {boolean} [options.dragPan=true] If `true`, enable the "drag to pan" interaction (see `DragPanHandler`).
+- * @param {boolean} [options.keyboard=true] If `true`, enable keyboard shortcuts (see `KeyboardHandler`).
+- * @param {boolean} [options.doubleClickZoom=true] If `true`, enable the "double click to zoom" interaction (see `DoubleClickZoomHandler`).
+- * @param {boolean} [options.touchZoomRotate=true] If `true`, enable the "pinch to rotate and zoom" interaction (see `TouchZoomRotateHandler`).
+- * @example
+- * var map = new mapboxgl.Map({
+- *   container: 'map',
+- *   center: [-122.420679, 37.772537],
+- *   zoom: 13,
+- *   style: style_object,
+- *   hash: true
+- * });
+- */
+-var Map = module.exports = function(options) {
+-
+-    options = util.inherit(this.options, options);
+-    this._interactive = options.interactive;
+-    this._failIfMajorPerformanceCaveat = options.failIfMajorPerformanceCaveat;
+-    this._preserveDrawingBuffer = options.preserveDrawingBuffer;
++var Dispatcher = require('../util/dispatcher');
++var AnimationLoop = require('./animation_loop');
++var validateStyle = require('./validate_style');
++var Source = require('../source/source');
++var styleSpec = require('./style_spec');
++var StyleFunction = require('./style_function');
+ 
+-    if (typeof options.container === 'string') {
+-        this._container = document.getElementById(options.container);
+-    } else {
+-        this._container = options.container;
+-    }
++module.exports = Style;
+ 
+-    this.animationLoop = new AnimationLoop();
+-    this.transform = new Transform(options.minZoom, options.maxZoom);
++function Style(stylesheet, animationLoop) {
++    this.animationLoop = animationLoop || new AnimationLoop();
++    this.dispatcher = new Dispatcher(Math.max(browser.hardwareConcurrency - 1, 1), this);
++    this.spriteAtlas = new SpriteAtlas(512, 512);
++    this.lineAtlas = new LineAtlas(256, 512);
+ 
+-    if (options.maxBounds) {
+-        this.setMaxBounds(options.maxBounds);
+-    }
++    this._layers = {};
++    this._order  = [];
++    this._groups = [];
++    this.sources = {};
++    this.zoomHistory = {};
+ 
+     util.bindAll([
+-        '_forwardStyleEvent',
+         '_forwardSourceEvent',
+-        '_forwardLayerEvent',
+         '_forwardTileEvent',
+-        '_onStyleLoad',
+-        '_onStyleChange',
+-        '_onSourceAdd',
+-        '_onSourceRemove',
+-        '_onSourceUpdate',
+-        '_onWindowResize',
+-        'onError',
+-        '_update',
+-        '_render'
++        '_forwardLayerEvent',
++        '_redoPlacement'
+     ], this);
+ 
+-    this._setupContainer();
+-    this._setupPainter();
++    this._resetUpdates();
+ 
+-    this.on('move', this._update.bind(this, false));
+-    this.on('zoom', this._update.bind(this, true));
+-    this.on('moveend', function() {
+-        this.animationLoop.set(300); // text fading
+-        this._rerender();
+-    }.bind(this));
++    var loaded = function(err, stylesheet) {
++        if (err) {
++            this.fire('error', {error: err});
++            return;
++        }
+ 
+-    if (typeof window !== 'undefined') {
+-        window.addEventListener('resize', this._onWindowResize, false);
+-    }
++        if (validateStyle.emitErrors(this, validateStyle(stylesheet))) return;
+ 
+-    this.interaction = new Interaction(this);
++        this._loaded = true;
++        this.stylesheet = stylesheet;
+ 
+-    if (options.interactive) {
+-        this.interaction.enable();
+-    }
++        this.updateClasses();
+ 
+-    this._hash = options.hash && (new Hash()).addTo(this);
+-    // don't set position from options if set through hash
+-    if (!this._hash || !this._hash._onHashChange()) {
+-        this.jumpTo(options);
++        var sources = stylesheet.sources;
++        for (var id in sources) {
++            this.addSource(id, sources[id]);
++        }
++
++        if (stylesheet.sprite) {
++            this.sprite = new ImageSprite(stylesheet.sprite);
++            this.sprite.on('load', this.fire.bind(this, 'change'));
++        }
++
++        this.glyphSource = new GlyphSource(stylesheet.glyphs);
++        this._resolve();
++        this.fire('load');
++    }.bind(this);
++
++    if (typeof stylesheet === 'string') {
++        ajax.getJSON(normalizeURL(stylesheet), loaded);
++    } else {
++        browser.frame(loaded.bind(this, null, stylesheet));
+     }
+ 
+-    this.stacks = {};
+-    this._classes = [];
++    this.on('source.load', function(event) {
++        var source = event.source;
++        if (source && source.vectorLayerIds) {
++            for (var layerId in this._layers) {
++                var layer = this._layers[layerId];
++                if (layer.source === source.id) {
++                    this._validateLayer(layer);
++                }
++            }
++        }
++    });
++}
+ 
+-    this.resize();
++Style.prototype = util.inherit(Evented, {
++    _loaded: false,
+ 
+-    if (options.classes) this.setClasses(options.classes);
+-    if (options.style) this.setStyle(options.style);
+-    if (options.attributionControl) this.addControl(new Attribution(options.attributionControl));
++    _validateLayer: function(layer) {
++        var source = this.sources[layer.source];
+ 
+-    this.on('style.error', this.onError);
+-    this.on('source.error', this.onError);
+-    this.on('tile.error', this.onError);
+-    this.on('layer.error', this.onError);
+-};
++        if (!layer.sourceLayer) return;
++        if (!source) return;
++        if (!source.vectorLayerIds) return;
+ 
+-util.extend(Map.prototype, Evented);
+-util.extend(Map.prototype, Camera.prototype);
+-util.extend(Map.prototype, /** @lends Map.prototype */{
++        if (source.vectorLayerIds.indexOf(layer.sourceLayer) === -1) {
++            this.fire('error', {
++                error: new Error(
++                    'Source layer "' + layer.sourceLayer + '" ' +
++                    'does not exist on source "' + source.id + '" ' +
++                    'as specified by style layer "' + layer.id + '"'
++                )
++            });
++        }
++    },
+ 
+-    options: {
+-        center: [0, 0],
+-        zoom: 0,
+-        bearing: 0,
+-        pitch: 0,
++    loaded: function() {
++        if (!this._loaded)
++            return false;
+ 
+-        minZoom: defaultMinZoom,
+-        maxZoom: defaultMaxZoom,
++        for (var id in this.sources)
++            if (!this.sources[id].loaded())
++                return false;
+ 
+-        interactive: true,
++        if (this.sprite && !this.sprite.loaded())
++            return false;
+ 
+-        scrollZoom: true,
+-        boxZoom: true,
+-        dragRotate: true,
+-        dragPan: true,
+-        keyboard: true,
+-        doubleClickZoom: true,
+-        touchZoomRotate: true,
++        return true;
++    },
+ 
+-        bearingSnap: 7,
++    _resolve: function() {
++        var layer, layerJSON;
+ 
+-        hash: false,
++        this._layers = {};
++        this._order  = this.stylesheet.layers.map(function(layer) {
++            return layer.id;
++        });
+ 
+-        attributionControl: true,
++        // resolve all layers WITHOUT a ref
++        for (var i = 0; i < this.stylesheet.layers.length; i++) {
++            layerJSON = this.stylesheet.layers[i];
++            if (layerJSON.ref) continue;
++            layer = StyleLayer.create(layerJSON);
++            this._layers[layer.id] = layer;
++            layer.on('error', this._forwardLayerEvent);
++        }
+ 
+-        failIfMajorPerformanceCaveat: false,
+-        preserveDrawingBuffer: false
+-    },
++        // resolve all layers WITH a ref
++        for (var j = 0; j < this.stylesheet.layers.length; j++) {
++            layerJSON = this.stylesheet.layers[j];
++            if (!layerJSON.ref) continue;
++            var refLayer = this.getLayer(layerJSON.ref);
++            layer = StyleLayer.create(layerJSON, refLayer);
++            this._layers[layer.id] = layer;
++            layer.on('error', this._forwardLayerEvent);
++        }
+ 
+-    /**
+-     * Adds a control to the map, calling `control.addTo(this)`.
+-     *
+-     * @param {Control} control
+-     * @returns {Map} `this`
+-     */
+-    addControl: function(control) {
+-        control.addTo(this);
+-        return this;
++        this._groupLayers();
++        this._updateWorkerLayers();
+     },
+ 
+-    /**
+-     * Adds a style class to a map.
+-     *
+-     * @param {string} klass name of style class
+-     * @param {StyleOptions} [options]
+-     * @fires change
+-     * @returns {Map} `this`
+-     */
+-    addClass: function(klass, options) {
+-        if (this._classes.indexOf(klass) >= 0 || klass === '') return this;
+-        this._classes.push(klass);
+-        this._classOptions = options;
++    _groupLayers: function() {
++        var group;
+ 
+-        if (this.style) this.style.updateClasses();
+-        return this._update(true);
+-    },
++        this._groups = [];
+ 
+-    /**
+-     * Removes a style class from a map.
+-     *
+-     * @param {string} klass name of style class
+-     * @param {StyleOptions} [options]
+-     * @fires change
+-     * @returns {Map} `this`
+-     */
+-    removeClass: function(klass, options) {
+-        var i = this._classes.indexOf(klass);
+-        if (i < 0 || klass === '') return this;
+-        this._classes.splice(i, 1);
+-        this._classOptions = options;
++        // Split into groups of consecutive top-level layers with the same source.
++        for (var i = 0; i < this._order.length; ++i) {
++            var layer = this._layers[this._order[i]];
+ 
+-        if (this.style) this.style.updateClasses();
+-        return this._update(true);
+-    },
++            if (!group || layer.source !== group.source) {
++                group = [];
++                group.source = layer.source;
++                this._groups.push(group);
++            }
+ 
+-    /**
+-     * Helper method to add more than one class.
+-     *
+-     * @param {Array<string>} klasses An array of class names
+-     * @param {StyleOptions} [options]
+-     * @fires change
+-     * @returns {Map} `this`
+-     */
+-    setClasses: function(klasses, options) {
+-        var uniqueClasses = {};
+-        for (var i = 0; i < klasses.length; i++) {
+-            if (klasses[i] !== '') uniqueClasses[klasses[i]] = true;
++            group.push(layer);
+         }
+-        this._classes = Object.keys(uniqueClasses);
+-        this._classOptions = options;
+-
+-        if (this.style) this.style.updateClasses();
+-        return this._update(true);
+     },
+ 
+-    /**
+-     * Check whether a style class is active.
+-     *
+-     * @param {string} klass Name of style class
+-     * @returns {boolean}
+-     */
+-    hasClass: function(klass) {
+-        return this._classes.indexOf(klass) >= 0;
++    _updateWorkerLayers: function(ids) {
++        this.dispatcher.broadcast(ids ? 'update layers' : 'set layers', this._serializeLayers(ids));
+     },
+ 
+-    /**
+-     * Return an array of the current active style classes.
+-     *
+-     * @returns {boolean}
+-     */
+-    getClasses: function() {
+-        return this._classes;
++    _serializeLayers: function(ids) {
++        ids = ids || this._order;
++        var serialized = [];
++        var options = {includeRefProperties: true};
++        for (var i = 0; i < ids.length; i++) {
++            serialized.push(this._layers[ids[i]].serialize(options));
++        }
++        return serialized;
+     },
+ 
+-    /**
+-     * Detect the map's new width and height and resize it. Given
+-     * the `container` of the map specified in the Map constructor,
+-     * this reads the new width from the DOM: so this method is often
+-     * called after the map's container is resized by another script
+-     * or the map is shown after being initially hidden with CSS.
+-     *
+-     * @returns {Map} `this`
+-     */
+-    resize: function() {
+-        var width = 0, height = 0;
+-
+-        if (this._container) {
+-            width = this._container.offsetWidth || 400;
+-            height = this._container.offsetHeight || 300;
+-        }
++    _applyClasses: function(classes, options) {
++        if (!this._loaded) return;
+ 
+-        this._canvas.resize(width, height);
+-        this.transform.resize(width, height);
+-        this.painter.resize(width, height);
++        classes = classes || [];
++        options = options || {transition: true};
++        var transition = this.stylesheet.transition || {};
+ 
+-        return this
+-            .fire('movestart')
+-            .fire('move')
+-            .fire('resize')
+-            .fire('moveend');
+-    },
++        var layers = this._updates.allPaintProps ? this._layers : this._updates.paintProps;
+ 
+-    /**
+-     * Get the map's geographical bounds.
+-     *
+-     * @returns {LngLatBounds}
+-     */
+-    getBounds: function() {
+-        var bounds = new LngLatBounds(
+-            this.transform.pointLocation(new Point(0, 0)),
+-            this.transform.pointLocation(this.transform.size));
++        for (var id in layers) {
++            var layer = this._layers[id];
++            var props = this._updates.paintProps[id];
+ 
+-        if (this.transform.angle || this.transform.pitch) {
+-            bounds.extend(this.transform.pointLocation(new Point(this.transform.size.x, 0)));
+-            bounds.extend(this.transform.pointLocation(new Point(0, this.transform.size.y)));
++            if (this._updates.allPaintProps || props.all) {
++                layer.updatePaintTransitions(classes, options, transition, this.animationLoop);
++            } else {
++                for (var paintName in props) {
++                    this._layers[id].updatePaintTransition(paintName, classes, options, transition, this.animationLoop);
++                }
++            }
+         }
+-
+-        return bounds;
+     },
+ 
+-    /**
+-     * Set constraint on the map's geographical bounds. Pan or zoom operations that would result in
+-     * displaying regions that fall outside of the bounds instead result in displaying the map at the
+-     * closest point and/or zoom level of the requested operation that is within the max bounds.
+-     *
+-     * @param {LngLatBounds | Array<Array<number>> | null | undefined} lnglatbounds Desired max bounds of the map. If null or undefined, function removes any bounds constraints on the map.
+-     * @returns {Map} `this`
+-     */
+-    setMaxBounds: function (lnglatbounds) {
+-        if (lnglatbounds) {
+-            var b = LngLatBounds.convert(lnglatbounds);
+-            this.transform.lngRange = [b.getWest(), b.getEast()];
+-            this.transform.latRange = [b.getSouth(), b.getNorth()];
+-            this.transform._constrain();
+-            this._update();
+-        } else if (lnglatbounds === null || lnglatbounds === undefined) {
+-            this.transform.lngRange = [];
+-            this.transform.latRange = [];
+-            this._update();
+-        }
+-        return this;
+-
+-    },
+-    /**
+-     * Set the map's minimum zoom level, and zooms map to that level if it is
+-     * currently below it. If no parameter provided, unsets the current
+-     * minimum zoom (sets it to 0)
+-     *
+-     * @param {number} minZoom Minimum zoom level. Must be between 0 and 20.
+-     * @returns {Map} `this
+-     */
+-    setMinZoom: function(minZoom) {
++    _recalculate: function(z) {
++        for (var sourceId in this.sources)
++            this.sources[sourceId].used = false;
+ 
+-        minZoom = minZoom === null || minZoom === undefined ? defaultMinZoom : minZoom;
++        this._updateZoomHistory(z);
+ 
+-        if (minZoom >= defaultMinZoom && minZoom <= this.transform.maxZoom) {
+-            this.transform.minZoom = minZoom;
+-            this._update();
++        this.rasterFadeDuration = 300;
++        for (var layerId in this._layers) {
++            var layer = this._layers[layerId];
+ 
+-            if (this.getZoom() < minZoom) this.setZoom(minZoom);
++            layer.recalculate(z, this.zoomHistory);
++            if (!layer.isHidden(z) && layer.source) {
++                this.sources[layer.source].used = true;
++            }
++        }
+ 
+-            return this;
++        var maxZoomTransitionDuration = 300;
++        if (Math.floor(this.z) !== Math.floor(z)) {
++            this.animationLoop.set(maxZoomTransitionDuration);
++        }
+ 
+-        } else throw new Error('minZoom must be between ' + defaultMinZoom + ' and the current maxZoom, inclusive');
++        this.z = z;
++        this.fire('zoom');
+     },
+ 
+-    /**
+-     * Set the map's maximum zoom level, and zooms map to that level if it is
+-     * currently above it. If no parameter provided, unsets the current
+-     * maximum zoom (sets it to 20)
+-     * @param {number} maxZoom Maximum zoom level. Must be between 0 and 20.
+-     * @returns {Map} `this`
+-     */
+-    setMaxZoom: function(maxZoom) {
++    _updateZoomHistory: function(z) {
+ 
+-        maxZoom = maxZoom === null || maxZoom === undefined ? defaultMaxZoom : maxZoom;
++        var zh = this.zoomHistory;
+ 
+-        if (maxZoom >= this.transform.minZoom && maxZoom <= defaultMaxZoom) {
+-            this.transform.maxZoom = maxZoom;
+-            this._update();
++        if (zh.lastIntegerZoom === undefined) {
++            // first time
++            zh.lastIntegerZoom = Math.floor(z);
++            zh.lastIntegerZoomTime = 0;
++            zh.lastZoom = z;
++        }
+ 
+-            if (this.getZoom() > maxZoom) this.setZoom(maxZoom);
++        // check whether an integer zoom level as passed since the last frame
++        // and if yes, record it with the time. Used for transitioning patterns.
++        if (Math.floor(zh.lastZoom) < Math.floor(z)) {
++            zh.lastIntegerZoom = Math.floor(z);
++            zh.lastIntegerZoomTime = Date.now();
+ 
+-            return this;
++        } else if (Math.floor(zh.lastZoom) > Math.floor(z)) {
++            zh.lastIntegerZoom = Math.floor(z + 1);
++            zh.lastIntegerZoomTime = Date.now();
++        }
+ 
+-        } else throw new Error('maxZoom must be between the current minZoom and ' + defaultMaxZoom + ', inclusive');
+-    },
+-    /**
+-     * Get pixel coordinates relative to the map container, given a geographical
+-     * location.
+-     *
+-     * @param {LngLat} lnglat
+-     * @returns {Object} `x` and `y` coordinates
+-     */
+-    project: function(lnglat) {
+-        return this.transform.locationPoint(LngLat.convert(lnglat));
++        zh.lastZoom = z;
+     },
+ 
+-    /**
+-     * Get geographical coordinates, given pixel coordinates.
+-     *
+-     * @param {Array<number>} point [x, y] pixel coordinates
+-     * @returns {LngLat}
+-     */
+-    unproject: function(point) {
+-        return this.transform.pointLocation(Point.convert(point));
++    _checkLoaded: function () {
++        if (!this._loaded) {
++            throw new Error('Style is not done loading');
++        }
+     },
+ 
+     /**
+-     * Query rendered features within a point or rectangle.
+-     *
+-     * @param {Point|Array<number>|Array<Point>|Array<Array<number>>} [pointOrBox] Either [x, y] pixel coordinates of a point, or [[x1, y1], [x2, y2]] pixel coordinates of opposite corners of bounding rectangle. Optional: use entire viewport if omitted.
+-     * @param {Object} params
+-     * @param {Array<string>} [params.layers] Only query features from layers with these layer IDs.
+-     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
+-     *
+-     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features
+-     * matching the query parameters. The GeoJSON properties of each feature are taken from
+-     * the original source. Each feature object also contains a top-level `layer`
+-     * property whose value is an object representing the style layer to which the
+-     * feature belongs. Layout and paint properties in this object contain values
+-     * which are fully evaluated for the given zoom level and feature.
+-     *
+-     * @example
+-     * var features = map.queryRenderedFeatures([20, 35], { layers: ['my-layer-name'] });
+-     *
+-     * @example
+-     * var features = map.queryRenderedFeatures([[10, 20], [30, 50]], { layers: ['my-layer-name'] });
++     * Apply queued style updates in a batch
++     * @private
+      */
+-    queryRenderedFeatures: function(pointOrBox, params) {
+-        if (!(pointOrBox instanceof Point || Array.isArray(pointOrBox))) {
+-            params = pointOrBox;
+-            pointOrBox = undefined;
++    update: function(classes, options) {
++        if (!this._updates.changed) return this;
++
++        if (this._updates.allLayers) {
++            this._groupLayers();
++            this._updateWorkerLayers();
++        } else {
++            var updatedIds = Object.keys(this._updates.layers);
++            if (updatedIds.length) {
++                this._updateWorkerLayers(updatedIds);
++            }
+         }
+-        var queryGeometry = this._makeQueryGeometry(pointOrBox);
+-        return this.style.queryRenderedFeatures(queryGeometry, params, this.transform.zoom, this.transform.angle);
+-    },
+ 
+-    _makeQueryGeometry: function(pointOrBox) {
+-        if (pointOrBox === undefined) {
+-            // bounds was omitted: use full viewport
+-            pointOrBox = [
+-                Point.convert([0, 0]),
+-                Point.convert([this.transform.width, this.transform.height])
+-            ];
++        var updatedSourceIds = Object.keys(this._updates.sources);
++        var i;
++        for (i = 0; i < updatedSourceIds.length; i++) {
++            this._reloadSource(updatedSourceIds[i]);
+         }
+ 
+-        var queryGeometry;
+-        var isPoint = pointOrBox instanceof Point || typeof pointOrBox[0] === 'number';
++        for (i = 0; i < this._updates.events.length; i++) {
++            var args = this._updates.events[i];
++            this.fire(args[0], args[1]);
++        }
+ 
+-        if (isPoint) {
+-            var point = Point.convert(pointOrBox);
+-            queryGeometry = [point];
+-        } else {
+-            var box = [Point.convert(pointOrBox[0]), Point.convert(pointOrBox[1])];
+-            queryGeometry = [
+-                box[0],
+-                new Point(box[1].x, box[0].y),
+-                box[1],
+-                new Point(box[0].x, box[1].y),
+-                box[0]
+-            ];
++        this._applyClasses(classes, options);
++
++        if (this._updates.changed) {
++            this.fire('change');
+         }
+ 
+-        queryGeometry = queryGeometry.map(function(p) {
+-            return this.transform.pointCoordinate(p);
+-        }.bind(this));
++        this._resetUpdates();
+ 
+-        return queryGeometry;
++        return this;
+     },
+ 
+-    /**
+-     * Get data from vector tiles as an array of GeoJSON Features.
+-     *
+-     * @param {string} sourceID source ID
+-     * @param {Object} params
+-     * @param {string} [params.sourceLayer] The name of the vector tile layer to get features from.
+-     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
+-     *
+-     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features matching the query parameters. The GeoJSON properties of each feature are taken from the original source. Each feature object also contains a top-level `layer` property whose value is an object representing the style layer to which the feature belongs. Layout and paint properties in this object contain values which are fully evaluated for the given zoom level and feature.
+-     */
+-    querySourceFeatures: function(sourceID, params) {
+-        return this.style.querySourceFeatures(sourceID, params);
++    _resetUpdates: function() {
++        this._updates = {
++            events: [],
++            layers: {},
++            sources: {},
++            paintProps: {}
++        };
+     },
+ 
+-    /**
+-     * Replaces the map's style object with a new value. Unlike the `style`
+-     * option in the Map constructor, this method only accepts an object
+-     * of a new style, not a URL string.
+-     *
+-     * @param {Object} style A style object formatted as JSON
+-     * @returns {Map} `this`
+-     */
+-    setStyle: function(style) {
+-        if (this.style) {
+-            this.style
+-                .off('load', this._onStyleLoad)
+-                .off('error', this._forwardStyleEvent)
+-                .off('change', this._onStyleChange)
+-                .off('source.add', this._onSourceAdd)
+-                .off('source.remove', this._onSourceRemove)
+-                .off('source.load', this._onSourceUpdate)
+-                .off('source.error', this._forwardSourceEvent)
+-                .off('source.change', this._onSourceUpdate)
+-                .off('layer.add', this._forwardLayerEvent)
+-                .off('layer.remove', this._forwardLayerEvent)
+-                .off('layer.error', this._forwardLayerEvent)
+-                .off('tile.add', this._forwardTileEvent)
+-                .off('tile.remove', this._forwardTileEvent)
+-                .off('tile.load', this._update)
+-                .off('tile.error', this._forwardTileEvent)
+-                .off('tile.stats', this._forwardTileEvent)
+-                ._remove();
+-
+-            this.off('rotate', this.style._redoPlacement);
+-            this.off('pitch', this.style._redoPlacement);
+-        }
+-
+-        if (!style) {
+-            this.style = null;
+-            return this;
+-        } else if (style instanceof Style) {
+-            this.style = style;
+-        } else {
+-            this.style = new Style(style, this.animationLoop);
++    addSource: function(id, source) {
++        this._checkLoaded();
++        if (this.sources[id] !== undefined) {
++            throw new Error('There is already a source with this ID');
+         }
++        if (!Source.is(source) && this._handleErrors(validateStyle.source, 'sources.' + id, source)) return this;
+ 
+-        this.style
+-            .on('load', this._onStyleLoad)
+-            .on('error', this._forwardStyleEvent)
+-            .on('change', this._onStyleChange)
+-            .on('source.add', this._onSourceAdd)
+-            .on('source.remove', this._onSourceRemove)
+-            .on('source.load', this._onSourceUpdate)
+-            .on('source.error', this._forwardSourceEvent)
+-            .on('source.change', this._onSourceUpdate)
+-            .on('layer.add', this._forwardLayerEvent)
+-            .on('layer.remove', this._forwardLayerEvent)
+-            .on('layer.error', this._forwardLayerEvent)
++        source = Source.create(source);
++        this.sources[id] = source;
++        source.id = id;
++        source.style = this;
++        source.dispatcher = this.dispatcher;
++        source
++            .on('load', this._forwardSourceEvent)
++            .on('error', this._forwardSourceEvent)
++            .on('change', this._forwardSourceEvent)
+             .on('tile.add', this._forwardTileEvent)
+-            .on('tile.remove', this._forwardTileEvent)
+-            .on('tile.load', this._update)
++            .on('tile.load', this._forwardTileEvent)
+             .on('tile.error', this._forwardTileEvent)
++            .on('tile.remove', this._forwardTileEvent)
+             .on('tile.stats', this._forwardTileEvent);
+ 
+-        this.on('rotate', this.style._redoPlacement);
+-        this.on('pitch', this.style._redoPlacement);
+-
+-        return this;
+-    },
+-
+-    /**
+-     * Get a style object that can be used to recreate the map's style.
+-     *
+-     * @returns {Object} style
+-     */
+-    getStyle: function() {
+-        return this.style.serialize();
+-    },
++        this._updates.events.push(['source.add', {source: source}]);
++        this._updates.changed = true;
+ 
+-    /**
+-     * Add a source to the map style.
+-     *
+-     * @param {string} id ID of the source. Must not be used by any existing source.
+-     * @param {Object} source source specification, following the
+-     * [Mapbox GL Style Reference](https://www.mapbox.com/mapbox-gl-style-spec/#sources)
+-     * @fires source.add
+-     * @returns {Map} `this`
+-     */
+-    addSource: function(id, source) {
+-        this.style.addSource(id, source);
+-        this._update(true);
+         return this;
+     },
+ 
+     /**
+-     * Remove an existing source from the map style.
+-     *
+-     * @param {string} id ID of the source to remove
+-     * @fires source.remove
+-     * @returns {Map} `this`
++     * Remove a source from this stylesheet, given its id.
++     * @param {string} id id of the source to remove
++     * @returns {Style} this style
++     * @throws {Error} if no source is found with the given ID
++     * @private
+      */
+     removeSource: function(id) {
+-        this.style.removeSource(id);
+-        this._update(true);
++        this._checkLoaded();
++
++        if (this.sources[id] === undefined) {
++            throw new Error('There is no source with this ID');
++        }
++        var source = this.sources[id];
++        delete this.sources[id];
++        source
++            .off('load', this._forwardSourceEvent)
++            .off('error', this._forwardSourceEvent)
++            .off('change', this._forwardSourceEvent)
++            .off('tile.add', this._forwardTileEvent)
++            .off('tile.load', this._forwardTileEvent)
++            .off('tile.error', this._forwardTileEvent)
++            .off('tile.remove', this._forwardTileEvent)
++            .off('tile.stats', this._forwardTileEvent);
++
++        this._updates.events.push(['source.remove', {source: source}]);
++        this._updates.changed = true;
++
+         return this;
+     },
+ 
+     /**
+-     * Return the style source object with the given `id`.
+-     *
+-     * @param {string} id source ID
+-     * @returns {Object}
++     * Get a source by id.
++     * @param {string} id id of the desired source
++     * @returns {Object} source
++     * @private
+      */
+     getSource: function(id) {
+-        return this.style.getSource(id);
++        return this.sources[id];
+     },
+ 
+     /**
+@@ -57214,18498 +58794,18337 @@ util.extend(Map.prototype, /** @lends Map.prototype */{
+      * @param {StyleLayer|Object} layer
+      * @param {string=} before  ID of an existing layer to insert before
+      * @fires layer.add
+-     * @returns {Map} `this`
++     * @returns {Style} `this`
++     * @private
+      */
+     addLayer: function(layer, before) {
+-        this.style.addLayer(layer, before);
+-        this._update(true);
+-        return this;
++        this._checkLoaded();
++
++        if (!(layer instanceof StyleLayer)) {
++            // this layer is not in the style.layers array, so we pass an impossible array index
++            if (this._handleErrors(validateStyle.layer,
++                    'layers.' + layer.id, layer, false, {arrayIndex: -1})) return this;
++
++            var refLayer = layer.ref && this.getLayer(layer.ref);
++            layer = StyleLayer.create(layer, refLayer);
++        }
++        this._validateLayer(layer);
++
++        layer.on('error', this._forwardLayerEvent);
++
++        this._layers[layer.id] = layer;
++        this._order.splice(before ? this._order.indexOf(before) : Infinity, 0, layer.id);
++
++        this._updates.allLayers = true;
++        if (layer.source) {
++            this._updates.sources[layer.source] = true;
++        }
++        this._updates.events.push(['layer.add', {layer: layer}]);
++
++        return this.updateClasses(layer.id);
+     },
+ 
+     /**
+-     * Remove the layer with the given `id` from the map. Any layers which refer to the
+-     * specified layer via a `ref` property are also removed.
+-     *
+-     * @param {string} id layer id
+-     * @throws {Error} if no layer with the given `id` exists
+-     * @fires layer.remove
+-     * @returns {Map} `this`
++     * Remove a layer from this stylesheet, given its id.
++     * @param {string} id id of the layer to remove
++     * @returns {Style} this style
++     * @throws {Error} if no layer is found with the given ID
++     * @private
+      */
+     removeLayer: function(id) {
+-        this.style.removeLayer(id);
+-        this._update(true);
++        this._checkLoaded();
++
++        var layer = this._layers[id];
++        if (layer === undefined) {
++            throw new Error('There is no layer with this ID');
++        }
++        for (var i in this._layers) {
++            if (this._layers[i].ref === id) {
++                this.removeLayer(i);
++            }
++        }
++
++        layer.off('error', this._forwardLayerEvent);
++
++        delete this._layers[id];
++        this._order.splice(this._order.indexOf(id), 1);
++
++        this._updates.allLayers = true;
++        this._updates.events.push(['layer.remove', {layer: layer}]);
++        this._updates.changed = true;
++
+         return this;
+     },
+ 
+     /**
+      * Return the style layer object with the given `id`.
+      *
+-     * @param {string} id layer id
++     * @param {string} id - id of the desired layer
+      * @returns {?Object} a layer, if one with the given `id` exists
++     * @private
+      */
+     getLayer: function(id) {
+-        return this.style.getLayer(id);
++        return this._layers[id];
+     },
+ 
+     /**
+-     * Set the filter for a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {Array} filter filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#types-filter)
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setFilter('my-layer', ['==', 'name', 'USA']);
++     * If a layer has a `ref` property that makes it derive some values
++     * from another layer, return that referent layer. Otherwise,
++     * returns the layer itself.
++     * @param {string} id the layer's id
++     * @returns {Layer} the referent layer or the layer itself
++     * @private
+      */
+-    setFilter: function(layer, filter) {
+-        this.style.setFilter(layer, filter);
+-        this._update(true);
+-        return this;
++    getReferentLayer: function(id) {
++        var layer = this.getLayer(id);
++        if (layer.ref) {
++            layer = this.getLayer(layer.ref);
++        }
++        return layer;
+     },
+ 
+-    /**
+-     * Set the zoom extent for a given style layer.
+-     *
+-     * @param {string} layerId ID of a layer
+-     * @param {number} minzoom minimum zoom extent
+-     * @param {number} maxzoom maximum zoom extent
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setLayerZoomRange('my-layer', 2, 5);
+-     */
+     setLayerZoomRange: function(layerId, minzoom, maxzoom) {
+-        this.style.setLayerZoomRange(layerId, minzoom, maxzoom);
+-        this._update(true);
+-        return this;
+-    },
++        this._checkLoaded();
+ 
+-    /**
+-     * Get the filter for a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @returns {Array} filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#filter)
+-     */
+-    getFilter: function(layer) {
+-        return this.style.getFilter(layer);
+-    },
++        var layer = this.getReferentLayer(layerId);
+ 
+-    /**
+-     * Set the value of a paint property in a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a paint property
+-     * @param {*} value value for the paint propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
+-     * @param {string=} klass optional class specifier for the property
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setPaintProperty('my-layer', 'fill-color', '#faafee');
+-     */
+-    setPaintProperty: function(layer, name, value, klass) {
+-        this.style.setPaintProperty(layer, name, value, klass);
+-        this._update(true);
+-        return this;
+-    },
++        if (layer.minzoom === minzoom && layer.maxzoom === maxzoom) return this;
+ 
+-    /**
+-     * Get the value of a paint property in a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a paint property
+-     * @param {string=} klass optional class specifier for the property
+-     * @returns {*} value for the paint propery
+-     */
+-    getPaintProperty: function(layer, name, klass) {
+-        return this.style.getPaintProperty(layer, name, klass);
++        if (minzoom != null) {
++            layer.minzoom = minzoom;
++        }
++        if (maxzoom != null) {
++            layer.maxzoom = maxzoom;
++        }
++        return this._updateLayer(layer);
+     },
+ 
+-    /**
+-     * Set the value of a layout property in a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a layout property
+-     * @param {*} value value for the layout propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setLayoutProperty('my-layer', 'visibility', 'none');
+-     */
+-    setLayoutProperty: function(layer, name, value) {
+-        this.style.setLayoutProperty(layer, name, value);
+-        this._update(true);
+-        return this;
+-    },
++    setFilter: function(layerId, filter) {
++        this._checkLoaded();
+ 
+-    /**
+-     * Get the value of a layout property in a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a layout property
+-     * @param {string=} klass optional class specifier for the property
+-     * @returns {*} value for the layout propery
+-     */
+-    getLayoutProperty: function(layer, name) {
+-        return this.style.getLayoutProperty(layer, name);
++        var layer = this.getReferentLayer(layerId);
++
++        if (this._handleErrors(validateStyle.filter, 'layers.' + layer.id + '.filter', filter)) return this;
++
++        if (util.deepEqual(layer.filter, filter)) return this;
++        layer.filter = util.clone(filter);
++
++        return this._updateLayer(layer);
+     },
+ 
+     /**
+-     * Get the Map's container as an HTML element
+-     * @returns {HTMLElement} container
++     * Get a layer's filter object
++     * @param {string} layer the layer to inspect
++     * @returns {*} the layer's filter, if any
++     * @private
+      */
+-    getContainer: function() {
+-        return this._container;
++    getFilter: function(layer) {
++        return this.getReferentLayer(layer).filter;
+     },
+ 
+-    /**
+-     * Get the container for the map `canvas` element.
+-     *
+-     * If you want to add non-GL overlays to the map, you should append them to this element. This
+-     * is the element to which event bindings for map interactivity such as panning and zooming are
+-     * attached. It will receive bubbled events for child elements such as the `canvas`, but not for
+-     * map controls.
+-     *
+-     * @returns {HTMLElement} container
+-     */
+-    getCanvasContainer: function() {
+-        return this._canvasContainer;
++    setLayoutProperty: function(layerId, name, value) {
++        this._checkLoaded();
++
++        var layer = this.getReferentLayer(layerId);
++
++        if (util.deepEqual(layer.getLayoutProperty(name), value)) return this;
++
++        layer.setLayoutProperty(name, value);
++        return this._updateLayer(layer);
+     },
+ 
+     /**
+-     * Get the Map's canvas as an HTML canvas
+-     * @returns {HTMLElement} canvas
++     * Get a layout property's value from a given layer
++     * @param {string} layer the layer to inspect
++     * @param {string} name the name of the layout property
++     * @returns {*} the property value
++     * @private
+      */
+-    getCanvas: function() {
+-        return this._canvas.getElement();
++    getLayoutProperty: function(layer, name) {
++        return this.getReferentLayer(layer).getLayoutProperty(name);
+     },
+ 
+-    _setupContainer: function() {
+-        var container = this._container;
+-        container.classList.add('mapboxgl-map');
++    setPaintProperty: function(layerId, name, value, klass) {
++        this._checkLoaded();
+ 
+-        var canvasContainer = this._canvasContainer = DOM.create('div', 'mapboxgl-canvas-container', container);
+-        if (this._interactive) {
+-            canvasContainer.classList.add('mapboxgl-interactive');
+-        }
+-        this._canvas = new Canvas(this, canvasContainer);
++        var layer = this.getLayer(layerId);
+ 
+-        var controlContainer = this._controlContainer = DOM.create('div', 'mapboxgl-control-container', container);
+-        var corners = this._controlCorners = {};
+-        ['top-left', 'top-right', 'bottom-left', 'bottom-right'].forEach(function (pos) {
+-            corners[pos] = DOM.create('div', 'mapboxgl-ctrl-' + pos, controlContainer);
+-        });
+-    },
++        if (util.deepEqual(layer.getPaintProperty(name, klass), value)) return this;
+ 
+-    _setupPainter: function() {
+-        var gl = this._canvas.getWebGLContext({
+-            failIfMajorPerformanceCaveat: this._failIfMajorPerformanceCaveat,
+-            preserveDrawingBuffer: this._preserveDrawingBuffer
+-        });
++        var wasFeatureConstant = layer.isPaintValueFeatureConstant(name);
++        layer.setPaintProperty(name, value, klass);
+ 
+-        if (!gl) {
+-            console.error('Failed to initialize WebGL');
+-            return;
++        var isFeatureConstant = !(StyleFunction.isFunctionDefinition(value) && value.property !== '$zoom' && value.property !== undefined);
++
++        if (!isFeatureConstant || !wasFeatureConstant) {
++            this._updates.layers[layerId] = true;
++            if (layer.source) {
++                this._updates.sources[layer.source] = true;
++            }
+         }
+ 
+-        this.painter = new Painter(gl, this.transform);
++        return this.updateClasses(layerId, name);
+     },
+ 
+-    /**
+-     * WebGL Context Lost event.
+-     *
+-     * @event webglcontextlost
+-     * @memberof Map
+-     * @instance
+-     * @type {Object}
+-     * @property {Event} originalEvent the original DOM event
+-     */
+-    _contextLost: function(event) {
+-        event.preventDefault();
+-        if (this._frameId) {
+-            browser.cancelFrame(this._frameId);
+-        }
+-        this.fire("webglcontextlost", {originalEvent: event});
++    getPaintProperty: function(layer, name, klass) {
++        return this.getLayer(layer).getPaintProperty(name, klass);
+     },
+ 
+-    /**
+-     * WebGL Context Restored event.
+-     *
+-     * @event webglcontextrestored
+-     * @memberof Map
+-     * @instance
+-     * @type {Object}
+-     */
+-    _contextRestored: function(event) {
+-        this._setupPainter();
+-        this.resize();
+-        this._update();
+-        this.fire("webglcontextrestored", {originalEvent: event});
++    updateClasses: function (layerId, paintName) {
++        this._updates.changed = true;
++        if (!layerId) {
++            this._updates.allPaintProps = true;
++        } else {
++            var props = this._updates.paintProps;
++            if (!props[layerId]) props[layerId] = {};
++            props[layerId][paintName || 'all'] = true;
++        }
++        return this;
+     },
+ 
+-    /**
+-     * Is this map fully loaded? If the style isn't loaded
+-     * or it has a change to the sources or style that isn't
+-     * propagated to its style, return false.
+-     *
+-     * @returns {boolean} whether the map is loaded
+-     */
+-    loaded: function() {
+-        if (this._styleDirty || this._sourcesDirty)
+-            return false;
+-        if (!this.style || !this.style.loaded())
+-            return false;
+-        return true;
++    serialize: function() {
++        return util.filterObject({
++            version: this.stylesheet.version,
++            name: this.stylesheet.name,
++            metadata: this.stylesheet.metadata,
++            center: this.stylesheet.center,
++            zoom: this.stylesheet.zoom,
++            bearing: this.stylesheet.bearing,
++            pitch: this.stylesheet.pitch,
++            sprite: this.stylesheet.sprite,
++            glyphs: this.stylesheet.glyphs,
++            transition: this.stylesheet.transition,
++            sources: util.mapObject(this.sources, function(source) {
++                return source.serialize();
++            }),
++            layers: this._order.map(function(id) {
++                return this._layers[id].serialize();
++            }, this)
++        }, function(value) { return value !== undefined; });
+     },
+ 
+-    /**
+-     * Update this map's style and sources, and re-render the map.
+-     *
+-     * @param {boolean} updateStyle mark the map's style for reprocessing as
+-     * well as its sources
+-     * @returns {Map} this
+-     * @private
+-     */
+-    _update: function(updateStyle) {
+-        if (!this.style) return this;
+-
+-        this._styleDirty = this._styleDirty || updateStyle;
+-        this._sourcesDirty = true;
+-
+-        this._rerender();
+-
++    _updateLayer: function (layer) {
++        this._updates.layers[layer.id] = true;
++        if (layer.source) {
++            this._updates.sources[layer.source] = true;
++        }
++        this._updates.changed = true;
+         return this;
+     },
+ 
+-    /**
+-     * Call when a (re-)render of the map is required, e.g. when the
+-     * user panned or zoomed,f or new data is available.
+-     * @returns {Map} this
+-     * @private
+-     */
+-    _render: function() {
+-        if (this.style && this._styleDirty) {
+-            this._styleDirty = false;
+-            this.style.update(this._classes, this._classOptions);
+-            this._classOptions = null;
+-            this.style._recalculate(this.transform.zoom);
+-        }
+-
+-        if (this.style && this._sourcesDirty) {
+-            this._sourcesDirty = false;
+-            this.style._updateSources(this.transform);
++    _flattenRenderedFeatures: function(sourceResults) {
++        var features = [];
++        for (var l = this._order.length - 1; l >= 0; l--) {
++            var layerID = this._order[l];
++            for (var s = 0; s < sourceResults.length; s++) {
++                var layerFeatures = sourceResults[s][layerID];
++                if (layerFeatures) {
++                    for (var f = 0; f < layerFeatures.length; f++) {
++                        features.push(layerFeatures[f]);
++                    }
++                }
++            }
+         }
++        return features;
++    },
+ 
+-        this.painter.render(this.style, {
+-            debug: this.showTileBoundaries,
+-            showOverdrawInspector: this._showOverdrawInspector,
+-            vertices: this.vertices,
+-            rotating: this.rotating,
+-            zooming: this.zooming
+-        });
+-
+-        this.fire('render');
+-
+-        if (this.loaded() && !this._loaded) {
+-            this._loaded = true;
+-            this.fire('load');
++    queryRenderedFeatures: function(queryGeometry, params, zoom, bearing) {
++        if (params && params.filter) {
++            this._handleErrors(validateStyle.filter, 'queryRenderedFeatures.filter', params.filter, true);
+         }
+ 
+-        this._frameId = null;
+-
+-        if (!this.animationLoop.stopped()) {
+-            this._styleDirty = true;
++        var sourceResults = [];
++        for (var id in this.sources) {
++            var source = this.sources[id];
++            if (source.queryRenderedFeatures) {
++                sourceResults.push(source.queryRenderedFeatures(queryGeometry, params, zoom, bearing));
++            }
+         }
++        return this._flattenRenderedFeatures(sourceResults);
++    },
+ 
+-        if (this._sourcesDirty || this._repaint || !this.animationLoop.stopped()) {
+-            this._rerender();
++    querySourceFeatures: function(sourceID, params) {
++        if (params && params.filter) {
++            this._handleErrors(validateStyle.filter, 'querySourceFeatures.filter', params.filter, true);
+         }
++        var source = this.getSource(sourceID);
++        return source && source.querySourceFeatures ? source.querySourceFeatures(params) : [];
++    },
+ 
+-        return this;
++    _handleErrors: function(validate, key, value, throws, props) {
++        var action = throws ? validateStyle.throwErrors : validateStyle.emitErrors;
++        var result = validate.call(validateStyle, util.extend({
++            key: key,
++            style: this.serialize(),
++            value: value,
++            styleSpec: styleSpec
++        }, props));
++        return action.call(validateStyle, this, result);
+     },
+ 
+-    /**
+-     * Destroys the map's underlying resources, including web workers and DOM elements. Afterwards,
+-     * you must not call any further methods on this Map instance.
+-     *
+-     * @returns {undefined}
+-     */
+-    remove: function() {
+-        if (this._hash) this._hash.remove();
+-        browser.cancelFrame(this._frameId);
+-        this.setStyle(null);
+-        if (typeof window !== 'undefined') {
+-            window.removeEventListener('resize', this._onWindowResize, false);
+-        }
+-        removeNode(this._canvasContainer);
+-        removeNode(this._controlContainer);
+-        this._container.classList.remove('mapboxgl-map');
++    _remove: function() {
++        this.dispatcher.remove();
+     },
+ 
+-    /**
+-     * A default error handler for `style.error`, `source.error`, `layer.error`,
+-     * and `tile.error` events.
+-     * It logs the error via `console.error`.
+-     *
+-     * @example
+-     * // Disable the default error handler
+-     * map.off('style.error', map.onError);
+-     * map.off('source.error', map.onError);
+-     * map.off('tile.error', map.onError);
+-     * map.off('layer.error', map.onError);
+-     */
+-    onError: function(e) {
+-        console.error(e.error);
++    _reloadSource: function(id) {
++        this.sources[id].reload();
+     },
+ 
+-    _rerender: function() {
+-        if (this.style && !this._frameId) {
+-            this._frameId = browser.frame(this._render);
++    _updateSources: function(transform) {
++        for (var id in this.sources) {
++            this.sources[id].update(transform);
+         }
+     },
+ 
+-    _forwardStyleEvent: function(e) {
+-        this.fire('style.' + e.type, util.extend({style: e.target}, e));
++    _redoPlacement: function() {
++        for (var id in this.sources) {
++            if (this.sources[id].redoPlacement) this.sources[id].redoPlacement();
++        }
+     },
+ 
+     _forwardSourceEvent: function(e) {
+-        this.fire(e.type, util.extend({style: e.target}, e));
++        this.fire('source.' + e.type, util.extend({source: e.target}, e));
+     },
+ 
+-    _forwardLayerEvent: function(e) {
+-        this.fire(e.type, util.extend({style: e.target}, e));
++    _forwardTileEvent: function(e) {
++        this.fire(e.type, util.extend({source: e.target}, e));
+     },
+ 
+-    _forwardTileEvent: function(e) {
+-        this.fire(e.type, util.extend({style: e.target}, e));
++    _forwardLayerEvent: function(e) {
++        this.fire('layer.' + e.type, util.extend({layer: {id: e.target.id}}, e));
+     },
+ 
+-    _onStyleLoad: function(e) {
+-        if (this.transform.unmodified) {
+-            this.jumpTo(this.style.stylesheet);
++    // Callbacks from web workers
++
++    'get sprite json': function(params, callback) {
++        var sprite = this.sprite;
++        if (sprite.loaded()) {
++            callback(null, { sprite: sprite.data, retina: sprite.retina });
++        } else {
++            sprite.on('load', function() {
++                callback(null, { sprite: sprite.data, retina: sprite.retina });
++            });
+         }
+-        this.style.update(this._classes, {transition: false});
+-        this._forwardStyleEvent(e);
+     },
+ 
+-    _onStyleChange: function(e) {
+-        this._update(true);
+-        this._forwardStyleEvent(e);
++    'get icons': function(params, callback) {
++        var sprite = this.sprite;
++        var spriteAtlas = this.spriteAtlas;
++        if (sprite.loaded()) {
++            spriteAtlas.setSprite(sprite);
++            spriteAtlas.addIcons(params.icons, callback);
++        } else {
++            sprite.on('load', function() {
++                spriteAtlas.setSprite(sprite);
++                spriteAtlas.addIcons(params.icons, callback);
++            });
++        }
+     },
+ 
+-    _onSourceAdd: function(e) {
+-        var source = e.source;
+-        if (source.onAdd)
+-            source.onAdd(this);
+-        this._forwardSourceEvent(e);
+-    },
++    'get glyphs': function(params, callback) {
++        var stacks = params.stacks,
++            remaining = Object.keys(stacks).length,
++            allGlyphs = {};
+ 
+-    _onSourceRemove: function(e) {
+-        var source = e.source;
+-        if (source.onRemove)
+-            source.onRemove(this);
+-        this._forwardSourceEvent(e);
+-    },
++        for (var fontName in stacks) {
++            this.glyphSource.getSimpleGlyphs(fontName, stacks[fontName], params.uid, done);
++        }
+ 
+-    _onSourceUpdate: function(e) {
+-        this._update();
+-        this._forwardSourceEvent(e);
+-    },
++        function done(err, glyphs, fontName) {
++            if (err) console.error(err);
+ 
+-    _onWindowResize: function() {
+-        this.stop().resize()._update();
++            allGlyphs[fontName] = glyphs;
++            remaining--;
++
++            if (remaining === 0)
++                callback(null, allGlyphs);
++        }
+     }
+ });
+ 
+-util.extendAll(Map.prototype, /** @lends Map.prototype */{
++},{"../render/line_atlas":283,"../source/source":292,"../symbol/glyph_source":324,"../symbol/sprite_atlas":329,"../util/ajax":347,"../util/browser":348,"../util/dispatcher":350,"../util/evented":354,"../util/mapbox":359,"../util/util":362,"./animation_loop":300,"./image_sprite":301,"./style_function":305,"./style_layer":306,"./style_spec":313,"./validate_style":315}],304:[function(require,module,exports){
++'use strict';
+ 
+-    /**
+-     * Draw an outline around each rendered tile for debugging.
+-     *
+-     * @name showTileBoundaries
+-     * @type {boolean}
+-     */
+-    _showTileBoundaries: false,
+-    get showTileBoundaries() { return this._showTileBoundaries; },
+-    set showTileBoundaries(value) {
+-        if (this._showTileBoundaries === value) return;
+-        this._showTileBoundaries = value;
+-        this._update();
+-    },
++var MapboxGLFunction = require('./style_function');
++var parseColor = require('./parse_color');
++var util = require('../util/util');
+ 
+-    /**
+-     * Draw boxes around all symbols in the data source, showing which were
+-     * rendered and which were hidden due to collisions with other symbols for
+-     * style debugging.
+-     *
+-     * @name showCollisionBoxes
+-     * @type {boolean}
+-     */
+-    _showCollisionBoxes: false,
+-    get showCollisionBoxes() { return this._showCollisionBoxes; },
+-    set showCollisionBoxes(value) {
+-        if (this._showCollisionBoxes === value) return;
+-        this._showCollisionBoxes = value;
+-        this.style._redoPlacement();
+-    },
++module.exports = StyleDeclaration;
+ 
+-    /*
+-     * Show how many times each fragment has been shaded. White fragments have
+-     * been shaded 8 or more times. Black fragments have been shaded 0 times.
+-     *
+-     * @name showOverdraw
+-     * @type {boolean}
+-     */
+-    _showOverdrawInspector: false,
+-    get showOverdrawInspector() { return this._showOverdrawInspector; },
+-    set showOverdrawInspector(value) {
+-        if (this._showOverdrawInspector === value) return;
+-        this._showOverdrawInspector = value;
+-        this._update();
+-    },
++function StyleDeclaration(reference, value) {
++    this.type = reference.type;
++    this.transitionable = reference.transition;
++    this.value = util.clone(value);
++    this.isFunction = !!value.stops;
+ 
+-    /**
+-     * Enable continuous repaint to analyze performance.
+-     *
+-     * @name repaint
+-     * @type {boolean}
+-     */
+-    _repaint: false,
+-    get repaint() { return this._repaint; },
+-    set repaint(value) { this._repaint = value; this._update(); },
++    // immutable representation of value. used for comparison
++    this.json = JSON.stringify(this.value);
+ 
+-    // show vertices
+-    _vertices: false,
+-    get vertices() { return this._vertices; },
+-    set vertices(value) { this._vertices = value; this._update(); }
+-});
++    var parsedValue = this.type === 'color' ? parseColor(this.value) : value;
++    this.calculate = MapboxGLFunction[reference.function || 'piecewise-constant'](parsedValue);
++    this.isFeatureConstant = this.calculate.isFeatureConstant;
++    this.isZoomConstant = this.calculate.isZoomConstant;
+ 
+-function removeNode(node) {
+-    if (node.parentNode) {
+-        node.parentNode.removeChild(node);
++    if (reference.function === 'piecewise-constant' && reference.transition) {
++        this.calculate = transitioned(this.calculate);
++    }
++
++    if (!this.isFeatureConstant && !this.isZoomConstant) {
++        this.stopZoomLevels = [];
++        var interpolationAmountStops = [];
++        var stops = this.value.stops;
++        for (var i = 0; i < this.value.stops.length; i++) {
++            var zoom = stops[i][0].zoom;
++            if (this.stopZoomLevels.indexOf(zoom) < 0) {
++                this.stopZoomLevels.push(zoom);
++                interpolationAmountStops.push([zoom, interpolationAmountStops.length]);
++            }
++        }
++
++        this.calculateInterpolationT = MapboxGLFunction.interpolated({
++            stops: interpolationAmountStops,
++            base: value.base
++        });
+     }
+ }
+ 
+-/**
+- * Options common to Map#addClass, Map#removeClass, and Map#setClasses, controlling
+- * whether or not to smoothly transition property changes triggered by the class change.
+- *
+- * @typedef {Object} StyleOptions
+- * @property {boolean} transition
+- */
++function transitioned(calculate) {
++    return function(globalProperties, featureProperties) {
++        var z = globalProperties.zoom;
++        var zh = globalProperties.zoomHistory;
++        var duration = globalProperties.duration;
+ 
+- /**
+-  * This event is fired whenever the map is drawn to the screen because of
+-  *
+-  *  - a change in map position, zoom, pitch, or bearing
+-  *  - a change to the map style
+-  *  - a change to a GeoJSON source
+-  *  - a vector tile, GeoJSON file, glyph, or sprite being loaded
+-  *
+-  * @event render
+-  * @memberof Map
+-  * @instance
+-  */
++        var fraction = z % 1;
++        var t = Math.min((Date.now() - zh.lastIntegerZoomTime) / duration, 1);
++        var fromScale = 1;
++        var toScale = 1;
++        var mix, from, to;
++
++        if (z > zh.lastIntegerZoom) {
++            mix = fraction + (1 - fraction) * t;
++            fromScale *= 2;
++            from = calculate({zoom: z - 1}, featureProperties);
++            to = calculate({zoom: z}, featureProperties);
++        } else {
++            mix = 1 - (1 - t) * fraction;
++            to = calculate({zoom: z}, featureProperties);
++            from = calculate({zoom: z + 1}, featureProperties);
++            fromScale /= 2;
++        }
++
++        return {
++            from: from,
++            fromScale: fromScale,
++            to: to,
++            toScale: toScale,
++            t: mix
++        };
++    };
++}
+ 
+-},{"../geo/lng_lat":256,"../geo/lng_lat_bounds":257,"../geo/transform":258,"../render/painter":271,"../style/animation_loop":287,"../style/style":290,"../util/browser":335,"../util/canvas":336,"../util/dom":338,"../util/evented":341,"../util/util":349,"./camera":317,"./control/attribution":318,"./hash":329,"./interaction":330,"point-geometry":404}],332:[function(require,module,exports){
++},{"../util/util":362,"./parse_color":302,"./style_function":305}],305:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = Popup;
++var MapboxGLFunction = require('mapbox-gl-function');
++
++exports.interpolated = function(parameters) {
++    var inner = MapboxGLFunction.interpolated(parameters);
++    var outer = function(globalProperties, featureProperties) {
++        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
++    };
++    outer.isFeatureConstant = inner.isFeatureConstant;
++    outer.isZoomConstant = inner.isZoomConstant;
++    return outer;
++};
++
++exports['piecewise-constant'] = function(parameters) {
++    var inner = MapboxGLFunction['piecewise-constant'](parameters);
++    var outer = function(globalProperties, featureProperties) {
++        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
++    };
++    outer.isFeatureConstant = inner.isFeatureConstant;
++    outer.isZoomConstant = inner.isZoomConstant;
++    return outer;
++};
++
++exports.isFunctionDefinition = MapboxGLFunction.isFunctionDefinition;
++
++},{"mapbox-gl-function":233}],306:[function(require,module,exports){
++'use strict';
+ 
+ var util = require('../util/util');
++var StyleTransition = require('./style_transition');
++var StyleDeclaration = require('./style_declaration');
++var styleSpec = require('./style_spec');
++var validateStyle = require('./validate_style');
++var parseColor = require('./parse_color');
+ var Evented = require('../util/evented');
+-var DOM = require('../util/dom');
+-var LngLat = require('../geo/lng_lat');
+ 
+-/**
+- * Creates a popup component
+- * @class Popup
+- * @param {Object} options
+- * @param {boolean} options.closeButton whether to show a close button in the
+- * top right corner of the popup.
+- * @param {boolean} options.closeOnClick whether to close the popup when the
+- * map is clicked.
+- * @param {string} options.anchor - One of "top", "bottom", "left", "right", "top-left",
+- * "top-right", "bottom-left", or "bottom-right", describing where the popup's anchor
+- * relative to the coordinate set via `setLngLat`.
+- * @example
+- * var tooltip = new mapboxgl.Popup()
+- *   .setLngLat(e.lngLat)
+- *   .setHTML("<h1>Hello World!</h1>")
+- *   .addTo(map);
+- */
+-function Popup(options) {
+-    util.setOptions(this, options);
+-    util.bindAll([
+-        '_update',
+-        '_onClickClose'],
+-        this);
++module.exports = StyleLayer;
++
++var TRANSITION_SUFFIX = '-transition';
++
++StyleLayer.create = function(layer, refLayer) {
++    var Classes = {
++        background: require('./style_layer/background_style_layer'),
++        circle: require('./style_layer/circle_style_layer'),
++        fill: require('./style_layer/fill_style_layer'),
++        line: require('./style_layer/line_style_layer'),
++        raster: require('./style_layer/raster_style_layer'),
++        symbol: require('./style_layer/symbol_style_layer')
++    };
++    return new Classes[(refLayer || layer).type](layer, refLayer);
++};
++
++function StyleLayer(layer, refLayer) {
++    this.set(layer, refLayer);
+ }
+ 
+-Popup.prototype = util.inherit(Evented, /** @lends Popup.prototype */{
+-    options: {
+-        closeButton: true,
+-        closeOnClick: true
++StyleLayer.prototype = util.inherit(Evented, {
++
++    set: function(layer, refLayer) {
++        this.id = layer.id;
++        this.ref = layer.ref;
++        this.metadata = layer.metadata;
++        this.type = (refLayer || layer).type;
++        this.source = (refLayer || layer).source;
++        this.sourceLayer = (refLayer || layer)['source-layer'];
++        this.minzoom = (refLayer || layer).minzoom;
++        this.maxzoom = (refLayer || layer).maxzoom;
++        this.filter = (refLayer || layer).filter;
++
++        this.paint = {};
++        this.layout = {};
++
++        this._paintSpecifications = styleSpec['paint_' + this.type];
++        this._layoutSpecifications = styleSpec['layout_' + this.type];
++
++        this._paintTransitions = {}; // {[propertyName]: StyleTransition}
++        this._paintTransitionOptions = {}; // {[className]: {[propertyName]: { duration:Number, delay:Number }}}
++        this._paintDeclarations = {}; // {[className]: {[propertyName]: StyleDeclaration}}
++        this._layoutDeclarations = {}; // {[propertyName]: StyleDeclaration}
++        this._layoutFunctions = {}; // {[propertyName]: Boolean}
++
++        var paintName, layoutName;
++
++        // Resolve paint declarations
++        for (var key in layer) {
++            var match = key.match(/^paint(?:\.(.*))?$/);
++            if (match) {
++                var klass = match[1] || '';
++                for (paintName in layer[key]) {
++                    this.setPaintProperty(paintName, layer[key][paintName], klass);
++                }
++            }
++        }
++
++        // Resolve layout declarations
++        if (this.ref) {
++            this._layoutDeclarations = refLayer._layoutDeclarations;
++        } else {
++            for (layoutName in layer.layout) {
++                this.setLayoutProperty(layoutName, layer.layout[layoutName]);
++            }
++        }
++
++        // set initial layout/paint values
++        for (paintName in this._paintSpecifications) {
++            this.paint[paintName] = this.getPaintValue(paintName);
++        }
++        for (layoutName in this._layoutSpecifications) {
++            this._updateLayoutValue(layoutName);
++        }
+     },
+ 
+-    /**
+-     * Attaches the popup to a map
+-     * @param {Map} map
+-     * @returns {Popup} `this`
+-     */
+-    addTo: function(map) {
+-        this._map = map;
+-        this._map.on('move', this._update);
+-        if (this.options.closeOnClick) {
+-            this._map.on('click', this._onClickClose);
++    setLayoutProperty: function(name, value) {
++
++        if (value == null) {
++            delete this._layoutDeclarations[name];
++        } else {
++            var key = 'layers.' + this.id + '.layout.' + name;
++            if (this._handleErrors(validateStyle.layoutProperty, key, name, value)) return;
++            this._layoutDeclarations[name] = new StyleDeclaration(this._layoutSpecifications[name], value);
+         }
+-        this._update();
+-        return this;
++        this._updateLayoutValue(name);
+     },
+ 
+-    /**
+-     * Removes the popup from a map
+-     * @example
+-     * var popup = new mapboxgl.Popup().addTo(map);
+-     * popup.remove();
+-     * @returns {Popup} `this`
+-     */
+-    remove: function() {
+-        if (this._content && this._content.parentNode) {
+-            this._content.parentNode.removeChild(this._content);
++    getLayoutProperty: function(name) {
++        return (
++            this._layoutDeclarations[name] &&
++            this._layoutDeclarations[name].value
++        );
++    },
++
++    getLayoutValue: function(name, globalProperties, featureProperties) {
++        var specification = this._layoutSpecifications[name];
++        var declaration = this._layoutDeclarations[name];
++
++        if (declaration) {
++            return declaration.calculate(globalProperties, featureProperties);
++        } else {
++            return specification.default;
+         }
++    },
+ 
+-        if (this._container) {
+-            this._container.parentNode.removeChild(this._container);
+-            delete this._container;
++    setPaintProperty: function(name, value, klass) {
++        var validateStyleKey = 'layers.' + this.id + (klass ? '["paint.' + klass + '"].' : '.paint.') + name;
++
++        if (util.endsWith(name, TRANSITION_SUFFIX)) {
++            if (!this._paintTransitionOptions[klass || '']) {
++                this._paintTransitionOptions[klass || ''] = {};
++            }
++            if (value === null || value === undefined) {
++                delete this._paintTransitionOptions[klass || ''][name];
++            } else {
++                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
++                this._paintTransitionOptions[klass || ''][name] = value;
++            }
++        } else {
++            if (!this._paintDeclarations[klass || '']) {
++                this._paintDeclarations[klass || ''] = {};
++            }
++            if (value === null || value === undefined) {
++                delete this._paintDeclarations[klass || ''][name];
++            } else {
++                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
++                this._paintDeclarations[klass || ''][name] = new StyleDeclaration(this._paintSpecifications[name], value);
++            }
+         }
++    },
+ 
+-        if (this._map) {
+-            this._map.off('move', this._update);
+-            this._map.off('click', this._onClickClose);
+-            delete this._map;
++    getPaintProperty: function(name, klass) {
++        klass = klass || '';
++        if (util.endsWith(name, TRANSITION_SUFFIX)) {
++            return (
++                this._paintTransitionOptions[klass] &&
++                this._paintTransitionOptions[klass][name]
++            );
++        } else {
++            return (
++                this._paintDeclarations[klass] &&
++                this._paintDeclarations[klass][name] &&
++                this._paintDeclarations[klass][name].value
++            );
+         }
++    },
+ 
+-        return this;
++    getPaintValue: function(name, globalProperties, featureProperties) {
++        var specification = this._paintSpecifications[name];
++        var transition = this._paintTransitions[name];
++
++        if (transition) {
++            return transition.calculate(globalProperties, featureProperties);
++        } else if (specification.type === 'color' && specification.default) {
++            return parseColor(specification.default);
++        } else {
++            return specification.default;
++        }
+     },
+ 
+-    /**
+-     * Get the popup's geographical location
+-     * @returns {LngLat}
+-     */
+-    getLngLat: function() {
+-        return this._lngLat;
++    getPaintValueStopZoomLevels: function(name) {
++        var transition = this._paintTransitions[name];
++        if (transition) {
++            return transition.declaration.stopZoomLevels;
++        } else {
++            return [];
++        }
+     },
+ 
+-    /**
+-     * Set the popup's geographical position and move it.
+-     * @param {LngLat} lnglat
+-     * @returns {Popup} `this`
+-     */
+-    setLngLat: function(lnglat) {
+-        this._lngLat = LngLat.convert(lnglat);
+-        this._update();
+-        return this;
++    getPaintInterpolationT: function(name, zoom) {
++        var transition = this._paintTransitions[name];
++        return transition.declaration.calculateInterpolationT({ zoom: zoom });
+     },
+ 
+-    /**
+-     * Fill a popup element with text only content. This creates a text node
+-     * in the DOM, so it cannot end up appending raw HTML. Use this method
+-     * if you want an added level of security against XSS if the popup
+-     * content is user-provided.
+-     * @param {string} text
+-     * @returns {Popup} `this`
+-     * @example
+-     * var tooltip = new mapboxgl.Popup()
+-     *   .setLngLat(e.lngLat)
+-     *   .setText('Hello, world!')
+-     *   .addTo(map);
+-     */
+-    setText: function(text) {
+-        return this.setDOMContent(document.createTextNode(text));
++    isPaintValueFeatureConstant: function(name) {
++        var transition = this._paintTransitions[name];
++
++        if (transition) {
++            return transition.declaration.isFeatureConstant;
++        } else {
++            return true;
++        }
++    },
++
++    isPaintValueZoomConstant: function(name) {
++        var transition = this._paintTransitions[name];
++
++        if (transition) {
++            return transition.declaration.isZoomConstant;
++        } else {
++            return true;
++        }
+     },
+ 
+-    /**
+-     * Fill a popup element with HTML content, provided as a string.
+-     * @param {string} html
+-     * @returns {Popup} `this`
+-     */
+-    setHTML: function(html) {
+-        var frag = document.createDocumentFragment();
+-        var temp = document.createElement('body'), child;
+-        temp.innerHTML = html;
+-        while (true) {
+-            child = temp.firstChild;
+-            if (!child) break;
+-            frag.appendChild(child);
++
++    isHidden: function(zoom) {
++        if (this.minzoom && zoom < this.minzoom) return true;
++        if (this.maxzoom && zoom >= this.maxzoom) return true;
++        if (this.layout['visibility'] === 'none') return true;
++        if (this.paint[this.type + '-opacity'] === 0) return true;
++        return false;
++    },
++
++    updatePaintTransitions: function(classes, options, globalOptions, animationLoop) {
++        var declarations = util.extend({}, this._paintDeclarations['']);
++        for (var i = 0; i < classes.length; i++) {
++            util.extend(declarations, this._paintDeclarations[classes[i]]);
+         }
+ 
+-        return this.setDOMContent(frag);
++        var name;
++        for (name in declarations) { // apply new declarations
++            this._applyPaintDeclaration(name, declarations[name], options, globalOptions, animationLoop);
++        }
++        for (name in this._paintTransitions) {
++            if (!(name in declarations)) // apply removed declarations
++                this._applyPaintDeclaration(name, null, options, globalOptions, animationLoop);
++        }
+     },
+ 
+-    /**
+-     * Fill a popup element with DOM content
+-     * @param {Node} htmlNode Popup content as a DOM node
+-     * @returns {Popup} `this`
+-     * @example
+-     * // create an element with the popup content
+-     * var div = document.createElement('div');
+-     * div.innerHTML = 'Hello, world!';
+-     * var tooltip = new mapboxgl.Popup()
+-     *   .setLngLat(e.lngLat)
+-     *   .setDOMContent(div)
+-     *   .addTo(map);
+-     */
+-    setDOMContent: function(htmlNode) {
+-        this._createContent();
+-        this._content.appendChild(htmlNode);
+-        this._update();
+-        return this;
++    updatePaintTransition: function(name, classes, options, globalOptions, animationLoop) {
++        var declaration = this._paintDeclarations[''][name];
++        for (var i = 0; i < classes.length; i++) {
++            var classPaintDeclarations = this._paintDeclarations[classes[i]];
++            if (classPaintDeclarations && classPaintDeclarations[name]) {
++                declaration = classPaintDeclarations[name];
++            }
++        }
++        this._applyPaintDeclaration(name, declaration, options, globalOptions, animationLoop);
+     },
+ 
+-    _createContent: function() {
+-        if (this._content && this._content.parentNode) {
+-            this._content.parentNode.removeChild(this._content);
++    // update all zoom-dependent layout/paint values
++    recalculate: function(zoom, zoomHistory) {
++        for (var paintName in this._paintTransitions) {
++            this.paint[paintName] = this.getPaintValue(paintName, {zoom: zoom, zoomHistory: zoomHistory});
++        }
++        for (var layoutName in this._layoutFunctions) {
++            this.layout[layoutName] = this.getLayoutValue(layoutName, {zoom: zoom, zoomHistory: zoomHistory});
+         }
++    },
+ 
+-        this._content = DOM.create('div', 'mapboxgl-popup-content', this._container);
++    serialize: function(options) {
++        var output = {
++            'id': this.id,
++            'ref': this.ref,
++            'metadata': this.metadata,
++            'minzoom': this.minzoom,
++            'maxzoom': this.maxzoom
++        };
+ 
+-        if (this.options.closeButton) {
+-            this._closeButton = DOM.create('button', 'mapboxgl-popup-close-button', this._content);
+-            this._closeButton.innerHTML = '&#215;';
+-            this._closeButton.addEventListener('click', this._onClickClose);
++        for (var klass in this._paintDeclarations) {
++            var key = klass === '' ? 'paint' : 'paint.' + klass;
++            output[key] = util.mapObject(this._paintDeclarations[klass], getDeclarationValue);
++        }
++
++        if (!this.ref || (options && options.includeRefProperties)) {
++            util.extend(output, {
++                'type': this.type,
++                'source': this.source,
++                'source-layer': this.sourceLayer,
++                'filter': this.filter,
++                'layout': util.mapObject(this._layoutDeclarations, getDeclarationValue)
++            });
+         }
++
++        return util.filterObject(output, function(value, key) {
++            return value !== undefined && !(key === 'layout' && !Object.keys(value).length);
++        });
+     },
+ 
+-    _update: function() {
+-        if (!this._map || !this._lngLat || !this._content) { return; }
++    // set paint transition based on a given paint declaration
++    _applyPaintDeclaration: function (name, declaration, options, globalOptions, animationLoop) {
++        var oldTransition = options.transition ? this._paintTransitions[name] : undefined;
+ 
+-        if (!this._container) {
+-            this._container = DOM.create('div', 'mapboxgl-popup', this._map.getContainer());
+-            this._tip       = DOM.create('div', 'mapboxgl-popup-tip', this._container);
+-            this._container.appendChild(this._content);
++        if (declaration === null || declaration === undefined) {
++            var spec = this._paintSpecifications[name];
++            declaration = new StyleDeclaration(spec, spec.default);
+         }
+ 
+-        var pos = this._map.project(this._lngLat).round(),
+-            anchor = this.options.anchor;
+-
+-        if (!anchor) {
+-            var width = this._container.offsetWidth,
+-                height = this._container.offsetHeight;
++        if (oldTransition && oldTransition.declaration.json === declaration.json) return;
+ 
+-            if (pos.y < height) {
+-                anchor = ['top'];
+-            } else if (pos.y > this._map.transform.height - height) {
+-                anchor = ['bottom'];
+-            } else {
+-                anchor = [];
+-            }
++        var transitionOptions = util.extend({
++            duration: 300,
++            delay: 0
++        }, globalOptions, this.getPaintProperty(name + TRANSITION_SUFFIX));
+ 
+-            if (pos.x < width / 2) {
+-                anchor.push('left');
+-            } else if (pos.x > this._map.transform.width - width / 2) {
+-                anchor.push('right');
+-            }
++        var newTransition = this._paintTransitions[name] =
++                new StyleTransition(declaration, oldTransition, transitionOptions);
+ 
+-            if (anchor.length === 0) {
+-                anchor = 'bottom';
+-            } else {
+-                anchor = anchor.join('-');
+-            }
++        if (!newTransition.instant()) {
++            newTransition.loopID = animationLoop.set(newTransition.endTime - Date.now());
++        }
++        if (oldTransition) {
++            animationLoop.cancel(oldTransition.loopID);
+         }
++    },
+ 
+-        var anchorTranslate = {
+-            'top': 'translate(-50%,0)',
+-            'top-left': 'translate(0,0)',
+-            'top-right': 'translate(-100%,0)',
+-            'bottom': 'translate(-50%,-100%)',
+-            'bottom-left': 'translate(0,-100%)',
+-            'bottom-right': 'translate(-100%,-100%)',
+-            'left': 'translate(0,-50%)',
+-            'right': 'translate(-100%,-50%)'
+-        };
++    // update layout value if it's constant, or mark it as zoom-dependent
++    _updateLayoutValue: function(name) {
++        var declaration = this._layoutDeclarations[name];
+ 
+-        var classList = this._container.classList;
+-        for (var key in anchorTranslate) {
+-            classList.remove('mapboxgl-popup-anchor-' + key);
++        if (declaration && declaration.isFunction) {
++            this._layoutFunctions[name] = true;
++        } else {
++            delete this._layoutFunctions[name];
++            this.layout[name] = this.getLayoutValue(name);
+         }
+-        classList.add('mapboxgl-popup-anchor-' + anchor);
+-
+-        DOM.setTransform(this._container, anchorTranslate[anchor] + ' translate(' + pos.x + 'px,' + pos.y + 'px)');
+     },
+ 
+-    _onClickClose: function() {
+-        this.remove();
++    _handleErrors: function(validate, key, name, value) {
++        return validateStyle.emitErrors(this, validate.call(validateStyle, {
++            key: key,
++            layerType: this.type,
++            objectKey: name,
++            value: value,
++            styleSpec: styleSpec,
++            // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407
++            style: {glyphs: true, sprite: true}
++        }));
+     }
+ });
+ 
+-},{"../geo/lng_lat":256,"../util/dom":338,"../util/evented":341,"../util/util":349}],333:[function(require,module,exports){
++function getDeclarationValue(declaration) {
++    return declaration.value;
++}
++
++},{"../util/evented":354,"../util/util":362,"./parse_color":302,"./style_declaration":304,"./style_layer/background_style_layer":307,"./style_layer/circle_style_layer":308,"./style_layer/fill_style_layer":309,"./style_layer/line_style_layer":310,"./style_layer/raster_style_layer":311,"./style_layer/symbol_style_layer":312,"./style_spec":313,"./style_transition":314,"./validate_style":315}],307:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = Actor;
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-/**
+- * An implementation of the [Actor design pattern](http://en.wikipedia.org/wiki/Actor_model)
+- * that maintains the relationship between asynchronous tasks and the objects
+- * that spin them off - in this case, tasks like parsing parts of styles,
+- * owned by the styles
+- *
+- * @param {WebWorker} target
+- * @param {WebWorker} parent
+- * @private
+- */
+-function Actor(target, parent) {
+-    this.target = target;
+-    this.parent = parent;
+-    this.callbacks = {};
+-    this.callbackID = 0;
+-    this.receive = this.receive.bind(this);
+-    this.target.addEventListener('message', this.receive, false);
++function BackgroundStyleLayer() {
++    StyleLayer.apply(this, arguments);
+ }
+ 
+-Actor.prototype.receive = function(message) {
+-    var data = message.data,
+-        callback;
+-
+-    if (data.type === '<response>') {
+-        callback = this.callbacks[data.id];
+-        delete this.callbacks[data.id];
+-        callback(data.error || null, data.data);
+-    } else if (typeof data.id !== 'undefined') {
+-        var id = data.id;
+-        this.parent[data.type](data.data, function(err, data, buffers) {
+-            this.postMessage({
+-                type: '<response>',
+-                id: String(id),
+-                error: err ? String(err) : null,
+-                data: data
+-            }, buffers);
+-        }.bind(this));
+-    } else {
+-        this.parent[data.type](data.data);
+-    }
+-};
+-
+-Actor.prototype.send = function(type, data, callback, buffers) {
+-    var id = null;
+-    if (callback) this.callbacks[id = this.callbackID++] = callback;
+-    this.postMessage({ type: type, id: String(id), data: data }, buffers);
+-};
++module.exports = BackgroundStyleLayer;
+ 
+-/**
+- * Wrapped postMessage API that abstracts around IE's lack of
+- * `transferList` support.
+- *
+- * @param {Object} message
+- * @param {Object} transferList
+- * @private
+- */
+-Actor.prototype.postMessage = function(message, transferList) {
+-    this.target.postMessage(message, transferList);
+-};
++BackgroundStyleLayer.prototype = util.inherit(StyleLayer, {});
+ 
+-},{}],334:[function(require,module,exports){
++},{"../../util/util":362,"../style_layer":306}],308:[function(require,module,exports){
+ 'use strict';
+ 
+-exports.getJSON = function(url, callback) {
+-    var xhr = new XMLHttpRequest();
+-    xhr.open('GET', url, true);
+-    xhr.setRequestHeader('Accept', 'application/json');
+-    xhr.onerror = function(e) {
+-        callback(e);
+-    };
+-    xhr.onload = function() {
+-        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
+-            var data;
+-            try {
+-                data = JSON.parse(xhr.response);
+-            } catch (err) {
+-                return callback(err);
+-            }
+-            callback(null, data);
+-        } else {
+-            callback(new Error(xhr.statusText));
+-        }
+-    };
+-    xhr.send();
+-    return xhr;
+-};
+-
+-exports.getArrayBuffer = function(url, callback) {
+-    var xhr = new XMLHttpRequest();
+-    xhr.open('GET', url, true);
+-    xhr.responseType = 'arraybuffer';
+-    xhr.onerror = function(e) {
+-        callback(e);
+-    };
+-    xhr.onload = function() {
+-        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
+-            callback(null, xhr.response);
+-        } else {
+-            callback(new Error(xhr.statusText));
+-        }
+-    };
+-    xhr.send();
+-    return xhr;
+-};
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-function sameOrigin(url) {
+-    var a = document.createElement('a');
+-    a.href = url;
+-    return a.protocol === document.location.protocol && a.host === document.location.host;
++function CircleStyleLayer() {
++    StyleLayer.apply(this, arguments);
+ }
+ 
+-exports.getImage = function(url, callback) {
+-    return exports.getArrayBuffer(url, function(err, imgData) {
+-        if (err) return callback(err);
+-        var img = new Image();
+-        img.onload = function() {
+-            callback(null, img);
+-            (window.URL || window.webkitURL).revokeObjectURL(img.src);
+-        };
+-        var blob = new Blob([new Uint8Array(imgData)], { type: 'image/png' });
+-        img.src = (window.URL || window.webkitURL).createObjectURL(blob);
+-        img.getData = function() {
+-            var canvas = document.createElement('canvas');
+-            var context = canvas.getContext('2d');
+-            canvas.width = img.width;
+-            canvas.height = img.height;
+-            context.drawImage(img, 0, 0);
+-            return context.getImageData(0, 0, img.width, img.height).data;
+-        };
+-        return img;
+-    });
+-};
++module.exports = CircleStyleLayer;
+ 
+-exports.getVideo = function(urls, callback) {
+-    var video = document.createElement('video');
+-    video.onloadstart = function() {
+-        callback(null, video);
+-    };
+-    for (var i = 0; i < urls.length; i++) {
+-        var s = document.createElement('source');
+-        if (!sameOrigin(urls[i])) {
+-            video.crossOrigin = 'Anonymous';
+-        }
+-        s.src = urls[i];
+-        video.appendChild(s);
+-    }
+-    video.getData = function() { return video; };
+-    return video;
+-};
++CircleStyleLayer.prototype = util.inherit(StyleLayer, {});
+ 
+-},{}],335:[function(require,module,exports){
++},{"../../util/util":362,"../style_layer":306}],309:[function(require,module,exports){
+ 'use strict';
+ 
+-/**
+- * Unlike js/util/browser.js, this code is written with the expectation
+- * of a browser environment with a global 'window' object
+- * @module browser
+- * @private
+- */
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-/**
+- * Provides a function that outputs milliseconds: either performance.now()
+- * or a fallback to Date.now()
+- */
+-module.exports.now = (function() {
+-    if (window.performance &&
+-        window.performance.now) {
+-        return window.performance.now.bind(window.performance);
+-    } else {
+-        return Date.now.bind(Date);
+-    }
+-}());
++function FillStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-var frame = window.requestAnimationFrame ||
+-    window.mozRequestAnimationFrame ||
+-    window.webkitRequestAnimationFrame ||
+-    window.msRequestAnimationFrame;
++module.exports = FillStyleLayer;
+ 
+-exports.frame = function(fn) {
+-    return frame(fn);
+-};
++FillStyleLayer.prototype = util.inherit(StyleLayer, {});
+ 
+-var cancel = window.cancelAnimationFrame ||
+-    window.mozCancelAnimationFrame ||
+-    window.webkitCancelAnimationFrame ||
+-    window.msCancelAnimationFrame;
++},{"../../util/util":362,"../style_layer":306}],310:[function(require,module,exports){
++'use strict';
+ 
+-exports.cancelFrame = function(id) {
+-    cancel(id);
+-};
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-exports.timed = function (fn, dur, ctx) {
+-    if (!dur) {
+-        fn.call(ctx, 1);
+-        return null;
+-    }
++function LineStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-    var abort = false,
+-        start = module.exports.now();
++module.exports = LineStyleLayer;
+ 
+-    function tick(now) {
+-        if (abort) return;
+-        now = module.exports.now();
++LineStyleLayer.prototype = util.inherit(StyleLayer, {
+ 
+-        if (now >= start + dur) {
+-            fn.call(ctx, 1);
+-        } else {
+-            fn.call(ctx, (now - start) / dur);
+-            exports.frame(tick);
+-        }
+-    }
++    getPaintValue: function(name, globalProperties, featureProperties) {
++        var value = StyleLayer.prototype.getPaintValue.apply(this, arguments);
+ 
+-    exports.frame(tick);
++        // If the line is dashed, scale the dash lengths by the line
++        // width at the previous round zoom level.
++        if (value && name === 'line-dasharray') {
++            var flooredZoom = Math.floor(globalProperties.zoom);
++            if (this._flooredZoom !== flooredZoom) {
++                this._flooredZoom = flooredZoom;
++                this._flooredLineWidth = this.getPaintValue('line-width', globalProperties, featureProperties);
++            }
+ 
+-    return function() { abort = true; };
+-};
++            value.fromScale *= this._flooredLineWidth;
++            value.toScale *= this._flooredLineWidth;
++        }
+ 
+-/**
+- * Test if the current browser supports Mapbox GL JS
+- * @param {Object} options
+- * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
+- *   if the performance of Mapbox GL JS would be dramatically worse than
+- *   expected (i.e. a software renderer would be used)
+- * @return {boolean}
+- */
+-exports.supported = require('mapbox-gl-js-supported');
++        return value;
++    }
++});
+ 
+-exports.hardwareConcurrency = navigator.hardwareConcurrency || 8;
++},{"../../util/util":362,"../style_layer":306}],311:[function(require,module,exports){
++'use strict';
+ 
+-Object.defineProperty(exports, 'devicePixelRatio', {
+-    get: function() { return window.devicePixelRatio; }
+-});
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-exports.supportsWebp = false;
++function RasterStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-var webpImgTest = document.createElement('img');
+-webpImgTest.onload = function() {
+-    exports.supportsWebp = true;
+-};
+-webpImgTest.src = 'data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=';
++module.exports = RasterStyleLayer;
+ 
+-exports.supportsGeolocation = !!navigator.geolocation;
++RasterStyleLayer.prototype = util.inherit(StyleLayer, {});
+ 
+-},{"mapbox-gl-js-supported":375}],336:[function(require,module,exports){
++},{"../../util/util":362,"../style_layer":306}],312:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('../util');
+-var isSupported = require('mapbox-gl-js-supported');
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-module.exports = Canvas;
++function SymbolStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-function Canvas(parent, container) {
+-    this.canvas = document.createElement('canvas');
++module.exports = SymbolStyleLayer;
+ 
+-    if (parent && container) {
+-        this.canvas.style.position = 'absolute';
+-        this.canvas.classList.add('mapboxgl-canvas');
+-        this.canvas.addEventListener('webglcontextlost', parent._contextLost.bind(parent), false);
+-        this.canvas.addEventListener('webglcontextrestored', parent._contextRestored.bind(parent), false);
+-        this.canvas.setAttribute('tabindex', 0);
+-        container.appendChild(this.canvas);
+-    }
+-}
++SymbolStyleLayer.prototype = util.inherit(StyleLayer, {
+ 
+-Canvas.prototype.resize = function(width, height) {
+-    var pixelRatio = window.devicePixelRatio || 1;
++    isHidden: function() {
++        if (StyleLayer.prototype.isHidden.apply(this, arguments)) return true;
+ 
+-    // Request the required canvas size taking the pixelratio into account.
+-    this.canvas.width = pixelRatio * width;
+-    this.canvas.height = pixelRatio * height;
++        var isTextHidden = this.paint['text-opacity'] === 0 || !this.layout['text-field'];
++        var isIconHidden = this.paint['icon-opacity'] === 0 || !this.layout['icon-image'];
++        if (isTextHidden && isIconHidden) return true;
+ 
+-    // Maintain the same canvas size, potentially downscaling it for HiDPI displays
+-    this.canvas.style.width = width + 'px';
+-    this.canvas.style.height = height + 'px';
+-};
++        return false;
++    },
++
++    getLayoutValue: function(name, globalProperties, featureProperties) {
++        if (name === 'text-rotation-alignment' &&
++                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
++                !this.getLayoutProperty('text-rotation-alignment')) {
++            return 'map';
++        } else if (name === 'icon-rotation-alignment' &&
++                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
++                !this.getLayoutProperty('icon-rotation-alignment')) {
++            return 'map';
++        } else {
++            return StyleLayer.prototype.getLayoutValue.apply(this, arguments);
++        }
++    }
+ 
+-Canvas.prototype.getWebGLContext = function(attributes) {
+-    attributes = util.extend({}, attributes, isSupported.webGLContextAttributes);
++});
+ 
+-    return this.canvas.getContext('webgl', attributes) ||
+-        this.canvas.getContext('experimental-webgl', attributes);
+-};
++},{"../../util/util":362,"../style_layer":306}],313:[function(require,module,exports){
++'use strict';
+ 
+-Canvas.prototype.getElement = function() {
+-    return this.canvas;
+-};
++module.exports = require('mapbox-gl-style-spec/reference/latest');
+ 
+-},{"../util":349,"mapbox-gl-js-supported":375}],337:[function(require,module,exports){
++},{"mapbox-gl-style-spec/reference/latest":256}],314:[function(require,module,exports){
+ 'use strict';
+ 
+-var Actor = require('../actor');
+-var WebWorkify = require('webworkify');
++var util = require('../util/util');
++var interpolate = require('../util/interpolate');
+ 
+-module.exports = Dispatcher;
++module.exports = StyleTransition;
+ 
+-function Dispatcher(length, parent) {
+-    this.actors = [];
+-    this.currentActor = 0;
+-    for (var i = 0; i < length; i++) {
+-        var worker = new WebWorkify(require('../../source/worker'));
+-        var actor = new Actor(worker, parent);
+-        actor.name = "Worker " + i;
+-        this.actors.push(actor);
+-    }
+-}
++/*
++ * Represents a transition between two declarations
++ */
++function StyleTransition(declaration, oldTransition, value) {
+ 
+-Dispatcher.prototype = {
+-    broadcast: function(type, data) {
+-        for (var i = 0; i < this.actors.length; i++) {
+-            this.actors[i].send(type, data);
+-        }
+-    },
++    this.declaration = declaration;
++    this.startTime = this.endTime = (new Date()).getTime();
+ 
+-    send: function(type, data, callback, targetID, buffers) {
+-        if (typeof targetID !== 'number' || isNaN(targetID)) {
+-            // Use round robin to send requests to web workers.
+-            targetID = this.currentActor = (this.currentActor + 1) % this.actors.length;
+-        }
++    var type = declaration.type;
++    if ((type === 'string' || type === 'array') && declaration.transitionable) {
++        this.interp = interpZoomTransitioned;
++    } else {
++        this.interp = interpolate[type];
++    }
+ 
+-        this.actors[targetID].send(type, data, callback, buffers);
+-        return targetID;
+-    },
++    this.oldTransition = oldTransition;
++    this.duration = value.duration || 0;
++    this.delay = value.delay || 0;
+ 
+-    remove: function() {
+-        for (var i = 0; i < this.actors.length; i++) {
+-            this.actors[i].target.terminate();
+-        }
+-        this.actors = [];
++    if (!this.instant()) {
++        this.endTime = this.startTime + this.duration + this.delay;
++        this.ease = util.easeCubicInOut;
+     }
+-};
+ 
+-},{"../../source/worker":285,"../actor":333,"webworkify":420}],338:[function(require,module,exports){
+-'use strict';
++    if (oldTransition && oldTransition.endTime <= this.startTime) {
++        // Old transition is done running, so we can
++        // delete its reference to its old transition.
+ 
+-var Point = require('point-geometry');
++        delete oldTransition.oldTransition;
++    }
++}
+ 
+-exports.create = function (tagName, className, container) {
+-    var el = document.createElement(tagName);
+-    if (className) el.className = className;
+-    if (container) container.appendChild(el);
+-    return el;
++StyleTransition.prototype.instant = function() {
++    return !this.oldTransition || !this.interp || (this.duration === 0 && this.delay === 0);
+ };
+ 
+-var docStyle = document.documentElement.style;
++/*
++ * Return the value of the transitioning property at zoom level `z` and optional time `t`
++ */
++StyleTransition.prototype.calculate = function(globalProperties, featureProperties) {
++    var value = this.declaration.calculate(
++        util.extend({}, globalProperties, {duration: this.duration}),
++        featureProperties
++    );
+ 
+-function testProp(props) {
+-    for (var i = 0; i < props.length; i++) {
+-        if (props[i] in docStyle) {
+-            return props[i];
+-        }
+-    }
+-}
++    if (this.instant()) return value;
+ 
+-var selectProp = testProp(['userSelect', 'MozUserSelect', 'WebkitUserSelect', 'msUserSelect']),
+-    userSelect;
+-exports.disableDrag = function () {
+-    if (selectProp) {
+-        userSelect = docStyle[selectProp];
+-        docStyle[selectProp] = 'none';
+-    }
+-};
+-exports.enableDrag = function () {
+-    if (selectProp) {
+-        docStyle[selectProp] = userSelect;
++    var t = globalProperties.time || Date.now();
++
++    if (t < this.endTime) {
++        var oldValue = this.oldTransition.calculate(
++            util.extend({}, globalProperties, {time: this.startTime}),
++            featureProperties
++        );
++        var eased = this.ease((t - this.startTime - this.delay) / this.duration);
++        value = this.interp(oldValue, value, eased);
+     }
+-};
+ 
+-var transformProp = testProp(['transform', 'WebkitTransform']);
+-exports.setTransform = function(el, value) {
+-    el.style[transformProp] = value;
++    return value;
++
+ };
+ 
+-// Suppress the next click, but only if it's immediate.
+-function suppressClick(e) {
+-    e.preventDefault();
+-    e.stopPropagation();
+-    window.removeEventListener('click', suppressClick, true);
++function interpZoomTransitioned(from, to, t) {
++    return {
++        from: from.to,
++        fromScale: from.toScale,
++        to: to.to,
++        toScale: to.toScale,
++        t: t
++    };
+ }
+-exports.suppressClick = function() {
+-    window.addEventListener('click', suppressClick, true);
+-    window.setTimeout(function() {
+-        window.removeEventListener('click', suppressClick, true);
+-    }, 0);
+-};
+ 
+-exports.mousePos = function (el, e) {
+-    var rect = el.getBoundingClientRect();
+-    e = e.touches ? e.touches[0] : e;
+-    return new Point(
+-        e.clientX - rect.left - el.clientLeft,
+-        e.clientY - rect.top - el.clientTop
+-    );
+-};
++},{"../util/interpolate":356,"../util/util":362}],315:[function(require,module,exports){
++'use strict';
+ 
+-exports.touchPos = function (el, e) {
+-    var rect = el.getBoundingClientRect(),
+-        points = [];
+-    for (var i = 0; i < e.touches.length; i++) {
+-        points.push(new Point(
+-            e.touches[i].clientX - rect.left - el.clientLeft,
+-            e.touches[i].clientY - rect.top - el.clientTop
+-        ));
++module.exports = require('mapbox-gl-style-spec/lib/validate_style.min');
++
++module.exports.emitErrors = function throwErrors(emitter, errors) {
++    if (errors && errors.length) {
++        for (var i = 0; i < errors.length; i++) {
++            emitter.fire('error', { error: new Error(errors[i].message) });
++        }
++        return true;
++    } else {
++        return false;
+     }
+-    return points;
+ };
+ 
+-},{"point-geometry":404}],339:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = {
+-    API_URL: 'https://api.mapbox.com',
+-    REQUIRE_ACCESS_TOKEN: true
++module.exports.throwErrors = function throwErrors(emitter, errors) {
++    if (errors) {
++        for (var i = 0; i < errors.length; i++) {
++            throw new Error(errors[i].message);
++        }
++    }
+ };
+ 
+-},{}],340:[function(require,module,exports){
++},{"mapbox-gl-style-spec/lib/validate_style.min":255}],316:[function(require,module,exports){
+ 'use strict';
+ 
+-var assert = require('assert');
++var Point = require('point-geometry');
+ 
+-module.exports = DictionaryCoder;
++module.exports = Anchor;
+ 
+-function DictionaryCoder(strings) {
+-    this._stringToNumber = {};
+-    this._numberToString = [];
+-    for (var i = 0; i < strings.length; i++) {
+-        var string = strings[i];
+-        this._stringToNumber[string] = i;
+-        this._numberToString[i] = string;
++function Anchor(x, y, angle, segment) {
++    this.x = x;
++    this.y = y;
++    this.angle = angle;
++
++    if (segment !== undefined) {
++        this.segment = segment;
+     }
+ }
+ 
+-DictionaryCoder.prototype.encode = function(string) {
+-    assert(string in this._stringToNumber);
+-    return this._stringToNumber[string];
+-};
++Anchor.prototype = Object.create(Point.prototype);
+ 
+-DictionaryCoder.prototype.decode = function(n) {
+-    assert(n < this._numberToString.length);
+-    return this._numberToString[n];
++Anchor.prototype.clone = function() {
++    return new Anchor(this.x, this.y, this.angle, this.segment);
+ };
+ 
+-},{"assert":52}],341:[function(require,module,exports){
++},{"point-geometry":400}],317:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('./util');
++module.exports = checkMaxAngle;
+ 
+ /**
+- * Methods mixed in to other classes for event capabilities.
+- * @mixin Evented
++ * Labels placed around really sharp angles aren't readable. Check if any
++ * part of the potential label has a combined angle that is too big.
++ *
++ * @param {Array<Point>} line
++ * @param {Anchor} anchor The point on the line around which the label is anchored.
++ * @param {number} labelLength The length of the label in geometry units.
++ * @param {number} windowSize The check fails if the combined angles within a part of the line that is `windowSize` long is too big.
++ * @param {number} maxAngle The maximum combined angle that any window along the label is allowed to have.
++ *
++ * @returns {boolean} whether the label should be placed
++ * @private
+  */
+-var Evented = {
++function checkMaxAngle(line, anchor, labelLength, windowSize, maxAngle) {
+ 
+-    /**
+-     * Subscribe to a specified event with a listener function the latter gets the data object that was passed to `fire` and additionally `target` and `type` properties
+-     *
+-     * @param {string} type Event type
+-     * @param {Function} listener Function to be called when the event is fired
+-     * @returns {Object} `this`
+-     */
+-    on: function(type, listener) {
+-        this._events = this._events || {};
+-        this._events[type] = this._events[type] || [];
+-        this._events[type].push(listener);
++    // horizontal labels always pass
++    if (anchor.segment === undefined) return true;
+ 
+-        return this;
+-    },
++    var p = anchor;
++    var index = anchor.segment + 1;
++    var anchorDistance = 0;
+ 
+-    /**
+-     * Remove a event listener
+-     *
+-     * @param {string} [type] Event type. If none is specified, remove all listeners
+-     * @param {Function} [listener] Function to be called when the event is fired. If none is specified all listeners are removed
+-     * @returns {Object} `this`
+-     */
+-    off: function(type, listener) {
+-        if (!type) {
+-            // clear all listeners if no arguments specified
+-            delete this._events;
+-            return this;
+-        }
++    // move backwards along the line to the first segment the label appears on
++    while (anchorDistance > -labelLength / 2) {
++        index--;
+ 
+-        if (!this.listens(type)) return this;
++        // there isn't enough room for the label after the beginning of the line
++        if (index < 0) return false;
+ 
+-        if (listener) {
+-            var idx = this._events[type].indexOf(listener);
+-            if (idx >= 0) {
+-                this._events[type].splice(idx, 1);
+-            }
+-            if (!this._events[type].length) {
+-                delete this._events[type];
+-            }
+-        } else {
+-            delete this._events[type];
+-        }
++        anchorDistance -= line[index].dist(p);
++        p = line[index];
++    }
+ 
+-        return this;
+-    },
++    anchorDistance += line[index].dist(line[index + 1]);
++    index++;
+ 
+-    /**
+-     * Call a function once when an event has fired
+-     *
+-     * @param {string} type Event type.
+-     * @param {Function} listener Function to be called once when the event is fired
+-     * @returns {Object} `this`
+-     */
+-    once: function(type, listener) {
+-        var wrapper = function(data) {
+-            this.off(type, wrapper);
+-            listener.call(this, data);
+-        }.bind(this);
+-        this.on(type, wrapper);
+-        return this;
+-    },
++    // store recent corners and their total angle difference
++    var recentCorners = [];
++    var recentAngleDelta = 0;
+ 
+-    /**
+-     * Fire event of a given string type with the given data object
+-     *
+-     * @param {string} type Event type
+-     * @param {Object} [data] Optional data passed to the event receiver (e.g. {@link #EventData})
+-     * @returns {Object} `this`
+-     */
+-    fire: function(type, data) {
+-        if (!this.listens(type)) return this;
++    // move forwards by the length of the label and check angles along the way
++    while (anchorDistance < labelLength / 2) {
++        var prev = line[index - 1];
++        var current = line[index];
++        var next = line[index + 1];
+ 
+-        data = util.extend({}, data);
+-        util.extend(data, {type: type, target: this});
++        // there isn't enough room for the label before the end of the line
++        if (!next) return false;
+ 
+-        // make sure adding/removing listeners inside other listeners won't cause infinite loop
+-        var listeners = this._events[type].slice();
++        var angleDelta = prev.angleTo(current) - current.angleTo(next);
++        // restrict angle to -pi..pi range
++        angleDelta = Math.abs(((angleDelta + 3 * Math.PI) % (Math.PI * 2)) - Math.PI);
+ 
+-        for (var i = 0; i < listeners.length; i++) {
+-            listeners[i].call(this, data);
++        recentCorners.push({
++            distance: anchorDistance,
++            angleDelta: angleDelta
++        });
++        recentAngleDelta += angleDelta;
++
++        // remove corners that are far enough away from the list of recent anchors
++        while (anchorDistance - recentCorners[0].distance > windowSize) {
++            recentAngleDelta -= recentCorners.shift().angleDelta;
+         }
+ 
+-        return this;
+-    },
++        // the sum of angles within the window area exceeds the maximum allowed value. check fails.
++        if (recentAngleDelta > maxAngle) return false;
+ 
+-    /**
+-     * Check if an event is registered to a type
+-     * @param {string} type Event type
+-     * @returns {boolean} `true` if there is at least one registered listener for events of type `type`
+-     */
+-    listens: function(type) {
+-        return !!(this._events && this._events[type]);
++        index++;
++        anchorDistance += current.dist(next);
+     }
+-};
+ 
+-module.exports = Evented;
++    // no part of the line had an angle greater than the maximum allowed. check passes.
++    return true;
++}
+ 
+-},{"./util":349}],342:[function(require,module,exports){
++},{}],318:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = Glyphs;
++var Point = require('point-geometry');
+ 
+-function Glyphs(pbf, end) {
+-    this.stacks = pbf.readFields(readFontstacks, [], end);
+-}
++module.exports = clipLine;
+ 
+-function readFontstacks(tag, stacks, pbf) {
+-    if (tag === 1) {
+-        var fontstack = pbf.readMessage(readFontstack, {glyphs: {}});
+-        stacks.push(fontstack);
+-    }
+-}
++/**
++ * Returns the part of a multiline that intersects with the provided rectangular box.
++ *
++ * @param {Array<Array<Point>>} lines
++ * @param {number} x1 the left edge of the box
++ * @param {number} y1 the top edge of the box
++ * @param {number} x2 the right edge of the box
++ * @param {number} y2 the bottom edge of the box
++ * @returns {Array<Array<Point>>} lines
++ * @private
++ */
++function clipLine(lines, x1, y1, x2, y2) {
++    var clippedLines = [];
+ 
+-function readFontstack(tag, fontstack, pbf) {
+-    if (tag === 1) fontstack.name = pbf.readString();
+-    else if (tag === 2) fontstack.range = pbf.readString();
+-    else if (tag === 3) {
+-        var glyph = pbf.readMessage(readGlyph, {});
+-        fontstack.glyphs[glyph.id] = glyph;
+-    }
+-}
++    for (var l = 0; l < lines.length; l++) {
++        var line = lines[l];
++        var clippedLine;
+ 
+-function readGlyph(tag, glyph, pbf) {
+-    if (tag === 1) glyph.id = pbf.readVarint();
+-    else if (tag === 2) glyph.bitmap = pbf.readBytes();
+-    else if (tag === 3) glyph.width = pbf.readVarint();
+-    else if (tag === 4) glyph.height = pbf.readVarint();
+-    else if (tag === 5) glyph.left = pbf.readSVarint();
+-    else if (tag === 6) glyph.top = pbf.readSVarint();
+-    else if (tag === 7) glyph.advance = pbf.readVarint();
+-}
++        for (var i = 0; i < line.length - 1; i++) {
++            var p0 = line[i];
++            var p1 = line[i + 1];
+ 
+-},{}],343:[function(require,module,exports){
+-'use strict';
+ 
+-module.exports = interpolate;
++            if (p0.x < x1 && p1.x < x1) {
++                continue;
++            } else if (p0.x < x1) {
++                p0 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
++            } else if (p1.x < x1) {
++                p1 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
++            }
+ 
+-function interpolate(a, b, t) {
+-    return (a * (1 - t)) + (b * t);
++            if (p0.y < y1 && p1.y < y1) {
++                continue;
++            } else if (p0.y < y1) {
++                p0 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
++            } else if (p1.y < y1) {
++                p1 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
++            }
++
++            if (p0.x >= x2 && p1.x >= x2) {
++                continue;
++            } else if (p0.x >= x2) {
++                p0 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
++            } else if (p1.x >= x2) {
++                p1 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
++            }
++
++            if (p0.y >= y2 && p1.y >= y2) {
++                continue;
++            } else if (p0.y >= y2) {
++                p0 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
++            } else if (p1.y >= y2) {
++                p1 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
++            }
++
++            if (!clippedLine || !p0.equals(clippedLine[clippedLine.length - 1])) {
++                clippedLine = [p0];
++                clippedLines.push(clippedLine);
++            }
++
++            clippedLine.push(p1);
++        }
++    }
++
++    return clippedLines;
+ }
+ 
+-interpolate.number = interpolate;
++},{"point-geometry":400}],319:[function(require,module,exports){
++'use strict';
+ 
+-interpolate.vec2 = function(from, to, t) {
+-    return [
+-        interpolate(from[0], to[0], t),
+-        interpolate(from[1], to[1], t)
+-    ];
+-};
++var StructArrayType = require('../util/struct_array');
++var util = require('../util/util');
++var Point = require('point-geometry');
+ 
+-/*
+- * Interpolate between two colors given as 4-element arrays.
++/**
++ * A collision box represents an area of the map that that is covered by a
++ * label. CollisionFeature uses one or more of these collision boxes to
++ * represent all the area covered by a single label. They are used to
++ * prevent collisions between labels.
+  *
+- * @param {Color} from
+- * @param {Color} to
+- * @param {number} t interpolation factor between 0 and 1
+- * @returns {Color} interpolated color
++ * A collision box actually represents a 3d volume. The first two dimensions,
++ * x and y, are specified with `anchor` along with `x1`, `y1`, `x2`, `y2`.
++ * The third dimension, zoom, is limited by `maxScale` which determines
++ * how far in the z dimensions the box extends.
++ *
++ * As you zoom in on a map, all points on the map get further and further apart
++ * but labels stay roughly the same size. Labels cover less real world area on
++ * the map at higher zoom levels than they do at lower zoom levels. This is why
++ * areas are are represented with an anchor point and offsets from that point
++ * instead of just using four absolute points.
++ *
++ * Line labels are represented by a set of these boxes spaced out along a line.
++ * When you zoom in, line labels cover less real world distance along the line
++ * than they used to. Collision boxes near the edges that used to cover label
++ * no longer do. If a box doesn't cover the label anymore it should be ignored
++ * when doing collision checks. `maxScale` is how much you can scale the map
++ * before the label isn't within the box anymore.
++ * For example
++ * lower zoom:
++ * https://cloud.githubusercontent.com/assets/1421652/8060094/4d975f76-0e91-11e5-84b1-4edeb30a5875.png
++ * slightly higher zoom:
++ * https://cloud.githubusercontent.com/assets/1421652/8060061/26ae1c38-0e91-11e5-8c5a-9f380bf29f0a.png
++ * In the zoomed in image the two grey boxes on either side don't cover the
++ * label anymore. Their maxScale is smaller than the current scale.
++ *
++ *
++ * @class CollisionBoxArray
++ * @private
+  */
+-interpolate.color = function(from, to, t) {
+-    return [
+-        interpolate(from[0], to[0], t),
+-        interpolate(from[1], to[1], t),
+-        interpolate(from[2], to[2], t),
+-        interpolate(from[3], to[3], t)
+-    ];
+-};
+ 
+-interpolate.array = function(from, to, t) {
+-    return from.map(function(d, i) {
+-        return interpolate(d, to[i], t);
+-    });
+-};
++var CollisionBoxArray = module.exports = new StructArrayType({
++    members: [
++        // the box is centered around the anchor point
++        { type: 'Int16', name: 'anchorPointX' },
++        { type: 'Int16', name: 'anchorPointY' },
++
++        // distances to the edges from the anchor
++        { type: 'Int16', name: 'x1' },
++        { type: 'Int16', name: 'y1' },
++        { type: 'Int16', name: 'x2' },
++        { type: 'Int16', name: 'y2' },
++
++        // the box is only valid for scales < maxScale.
++        // The box does not block other boxes at scales >= maxScale;
++        { type: 'Float32', name: 'maxScale' },
+ 
+-},{}],344:[function(require,module,exports){
+-'use strict';
++        // the index of the feature in the original vectortile
++        { type: 'Uint32', name: 'featureIndex' },
++        // the source layer the feature appears in
++        { type: 'Uint16', name: 'sourceLayerIndex' },
++        // the bucket the feature appears in
++        { type: 'Uint16', name: 'bucketIndex' },
+ 
+-module.exports = {
+-    multiPolygonIntersectsBufferedMultiPoint: multiPolygonIntersectsBufferedMultiPoint,
+-    multiPolygonIntersectsMultiPolygon: multiPolygonIntersectsMultiPolygon,
+-    multiPolygonIntersectsBufferedMultiLine: multiPolygonIntersectsBufferedMultiLine
+-};
++        // rotated and scaled bbox used for indexing
++        { type: 'Int16', name: 'bbox0' },
++        { type: 'Int16', name: 'bbox1' },
++        { type: 'Int16', name: 'bbox2' },
++        { type: 'Int16', name: 'bbox3' },
+ 
+-function multiPolygonIntersectsBufferedMultiPoint(multiPolygon, rings, radius) {
+-    for (var j = 0; j < multiPolygon.length; j++) {
+-        var polygon = multiPolygon[j];
+-        for (var i = 0; i < rings.length; i++) {
+-            var ring = rings[i];
+-            for (var k = 0; k < ring.length; k++) {
+-                var point = ring[k];
+-                if (polygonContainsPoint(polygon, point)) return true;
+-                if (pointIntersectsBufferedLine(point, polygon, radius)) return true;
+-            }
+-        }
++        { type: 'Float32', name: 'placementScale' }
++    ]});
++
++util.extendAll(CollisionBoxArray.prototype.StructType.prototype, {
++    get anchorPoint() {
++        return new Point(this.anchorPointX, this.anchorPointY);
+     }
+-    return false;
+-}
++});
+ 
+-function multiPolygonIntersectsMultiPolygon(multiPolygonA, multiPolygonB) {
++},{"../util/struct_array":360,"../util/util":362,"point-geometry":400}],320:[function(require,module,exports){
++'use strict';
+ 
+-    if (multiPolygonA.length === 1 && multiPolygonA[0].length === 1) {
+-        return multiPolygonContainsPoint(multiPolygonB, multiPolygonA[0][0]);
+-    }
++module.exports = CollisionFeature;
+ 
+-    for (var m = 0; m < multiPolygonB.length; m++) {
+-        var ring = multiPolygonB[m];
+-        for (var n = 0; n < ring.length; n++) {
+-            if (multiPolygonContainsPoint(multiPolygonA, ring[n])) return true;
+-        }
+-    }
++/**
++ * A CollisionFeature represents the area of the tile covered by a single label.
++ * It is used with CollisionTile to check if the label overlaps with any
++ * previous labels. A CollisionFeature is mostly just a set of CollisionBox
++ * objects.
++ *
++ * @class CollisionFeature
++ * @param {Array<Point>} line The geometry the label is placed on.
++ * @param {Anchor} anchor The point along the line around which the label is anchored.
++ * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
++ * @param {Array<string>} layerIDs The IDs of the layers that this CollisionFeature is a part of.
++ * @param {Object} shaped The text or icon shaping results.
++ * @param {number} boxScale A magic number used to convert from glyph metrics units to geometry units.
++ * @param {number} padding The amount of padding to add around the label edges.
++ * @param {boolean} alignLine Whether the label is aligned with the line or the viewport.
++ *
++ * @private
++ */
++function CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex, shaped, boxScale, padding, alignLine, straight) {
+ 
+-    for (var j = 0; j < multiPolygonA.length; j++) {
+-        var polygon = multiPolygonA[j];
+-        for (var i = 0; i < polygon.length; i++) {
+-            if (multiPolygonContainsPoint(multiPolygonB, polygon[i])) return true;
+-        }
++    var y1 = shaped.top * boxScale - padding;
++    var y2 = shaped.bottom * boxScale + padding;
++    var x1 = shaped.left * boxScale - padding;
++    var x2 = shaped.right * boxScale + padding;
+ 
+-        for (var k = 0; k < multiPolygonB.length; k++) {
+-            if (lineIntersectsLine(polygon, multiPolygonB[k])) return true;
+-        }
+-    }
++    this.boxStartIndex = collisionBoxArray.length;
+ 
+-    return false;
+-}
++    if (alignLine) {
+ 
+-function multiPolygonIntersectsBufferedMultiLine(multiPolygon, multiLine, radius) {
+-    for (var i = 0; i < multiLine.length; i++) {
+-        var line = multiLine[i];
++        var height = y2 - y1;
++        var length = x2 - x1;
+ 
+-        for (var j = 0; j < multiPolygon.length; j++) {
+-            var polygon = multiPolygon[j];
++        if (height > 0) {
++            // set minimum box height to avoid very many small labels
++            height = Math.max(10 * boxScale, height);
+ 
+-            if (polygon.length >= 3) {
+-                for (var k = 0; k < line.length; k++) {
+-                    if (polygonContainsPoint(polygon, line[k])) return true;
+-                }
++            if (straight) {
++                // used for icon labels that are aligned with the line, but don't curve along it
++                var vector = line[anchor.segment + 1].sub(line[anchor.segment])._unit()._mult(length);
++                var straightLine = [anchor.sub(vector), anchor.add(vector)];
++                this._addLineCollisionBoxes(collisionBoxArray, straightLine, anchor, 0, length, height, featureIndex, sourceLayerIndex, bucketIndex);
++            } else {
++                // used for text labels that curve along a line
++                this._addLineCollisionBoxes(collisionBoxArray, line, anchor, anchor.segment, length, height, featureIndex, sourceLayerIndex, bucketIndex);
+             }
+-
+-            if (lineIntersectsBufferedLine(polygon, line, radius)) return true;
+         }
++
++    } else {
++        collisionBoxArray.emplaceBack(anchor.x, anchor.y, x1, y1, x2, y2, Infinity, featureIndex, sourceLayerIndex, bucketIndex,
++                0, 0, 0, 0, 0);
+     }
+-    return false;
++
++    this.boxEndIndex = collisionBoxArray.length;
+ }
+ 
+-function lineIntersectsBufferedLine(lineA, lineB, radius) {
++/**
++ * Create a set of CollisionBox objects for a line.
++ *
++ * @param {Array<Point>} line
++ * @param {Anchor} anchor
++ * @param {number} labelLength The length of the label in geometry units.
++ * @param {Anchor} anchor The point along the line around which the label is anchored.
++ * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
++ * @param {number} boxSize The size of the collision boxes that will be created.
++ *
++ * @private
++ */
++CollisionFeature.prototype._addLineCollisionBoxes = function(collisionBoxArray, line, anchor, segment, labelLength, boxSize, featureIndex, sourceLayerIndex, bucketIndex) {
++    var step = boxSize / 2;
++    var nBoxes = Math.floor(labelLength / step);
+ 
+-    if (lineA.length > 1) {
+-        if (lineIntersectsLine(lineA, lineB)) return true;
++    // offset the center of the first box by half a box so that the edge of the
++    // box is at the edge of the label.
++    var firstBoxOffset = -boxSize / 2;
+ 
+-        // Check whether any point in either line is within radius of the other line
+-        for (var j = 0; j < lineB.length; j++) {
+-            if (pointIntersectsBufferedLine(lineB[j], lineA, radius)) return true;
+-        }
+-    }
++    var bboxes = this.boxes;
+ 
+-    for (var k = 0; k < lineA.length; k++) {
+-        if (pointIntersectsBufferedLine(lineA[k], lineB, radius)) return true;
+-    }
++    var p = anchor;
++    var index = segment + 1;
++    var anchorDistance = firstBoxOffset;
+ 
+-    return false;
+-}
++    // move backwards along the line to the first segment the label appears on
++    do {
++        index--;
+ 
+-function lineIntersectsLine(lineA, lineB) {
+-    for (var i = 0; i < lineA.length - 1; i++) {
+-        var a0 = lineA[i];
+-        var a1 = lineA[i + 1];
+-        for (var j = 0; j < lineB.length - 1; j++) {
+-            var b0 = lineB[j];
+-            var b1 = lineB[j + 1];
+-            if (lineSegmentIntersectsLineSegment(a0, a1, b0, b1)) return true;
+-        }
+-    }
+-    return false;
+-}
++        // there isn't enough room for the label after the beginning of the line
++        // checkMaxAngle should have already caught this
++        if (index < 0) return bboxes;
+ 
++        anchorDistance -= line[index].dist(p);
++        p = line[index];
++    } while (anchorDistance > -labelLength / 2);
+ 
+-// http://bryceboe.com/2006/10/23/line-segment-intersection-algorithm/
+-function isCounterClockwise(a, b, c) {
+-    return (c.y - a.y) * (b.x - a.x) > (b.y - a.y) * (c.x - a.x);
+-}
++    var segmentLength = line[index].dist(line[index + 1]);
+ 
+-function lineSegmentIntersectsLineSegment(a0, a1, b0, b1) {
+-    return isCounterClockwise(a0, b0, b1) !== isCounterClockwise(a1, b0, b1) &&
+-        isCounterClockwise(a0, a1, b0) !== isCounterClockwise(a0, a1, b1);
+-}
++    for (var i = 0; i < nBoxes; i++) {
++        // the distance the box will be from the anchor
++        var boxDistanceToAnchor = -labelLength / 2 + i * step;
+ 
+-function pointIntersectsBufferedLine(p, line, radius) {
+-    var radiusSquared = radius * radius;
++        // the box is not on the current segment. Move to the next segment.
++        while (anchorDistance + segmentLength < boxDistanceToAnchor) {
++            anchorDistance += segmentLength;
++            index++;
+ 
+-    if (line.length === 1) return p.distSqr(line[0]) < radiusSquared;
++            // There isn't enough room before the end of the line.
++            if (index + 1 >= line.length) return bboxes;
+ 
+-    for (var i = 1; i < line.length; i++) {
+-        // Find line segments that have a distance <= radius^2 to p
+-        // In that case, we treat the line as "containing point p".
+-        var v = line[i - 1], w = line[i];
+-        if (distToSegmentSquared(p, v, w) < radiusSquared) return true;
+-    }
+-    return false;
+-}
++            segmentLength = line[index].dist(line[index + 1]);
++        }
+ 
+-// Code from http://stackoverflow.com/a/1501725/331379.
+-function distToSegmentSquared(p, v, w) {
+-    var l2 = v.distSqr(w);
+-    if (l2 === 0) return p.distSqr(v);
+-    var t = ((p.x - v.x) * (w.x - v.x) + (p.y - v.y) * (w.y - v.y)) / l2;
+-    if (t < 0) return p.distSqr(v);
+-    if (t > 1) return p.distSqr(w);
+-    return p.distSqr(w.sub(v)._mult(t)._add(v));
+-}
++        // the distance the box will be from the beginning of the segment
++        var segmentBoxDistance = boxDistanceToAnchor - anchorDistance;
+ 
+-// point in polygon ray casting algorithm
+-function multiPolygonContainsPoint(rings, p) {
+-    var c = false,
+-        ring, p1, p2;
++        var p0 = line[index];
++        var p1 = line[index + 1];
++        var boxAnchorPoint = p1.sub(p0)._unit()._mult(segmentBoxDistance)._add(p0)._round();
+ 
+-    for (var k = 0; k < rings.length; k++) {
+-        ring = rings[k];
+-        for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
+-            p1 = ring[i];
+-            p2 = ring[j];
+-            if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
+-                c = !c;
+-            }
+-        }
+-    }
+-    return c;
+-}
++        var distanceToInnerEdge = Math.max(Math.abs(boxDistanceToAnchor - firstBoxOffset) - step / 2, 0);
++        var maxScale = labelLength / 2 / distanceToInnerEdge;
+ 
+-function polygonContainsPoint(ring, p) {
+-    var c = false;
+-    for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
+-        var p1 = ring[i];
+-        var p2 = ring[j];
+-        if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
+-            c = !c;
+-        }
++        collisionBoxArray.emplaceBack(boxAnchorPoint.x, boxAnchorPoint.y,
++                -boxSize / 2, -boxSize / 2, boxSize / 2, boxSize / 2, maxScale,
++                featureIndex, sourceLayerIndex, bucketIndex,
++                0, 0, 0, 0, 0);
+     }
+-    return c;
+-}
+ 
+-},{}],345:[function(require,module,exports){
++    return bboxes;
++};
++
++},{}],321:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = LRUCache;
++var Point = require('point-geometry');
++var EXTENT = require('../data/bucket').EXTENT;
++var Grid = require('grid-index');
+ 
+-/**
+- * A [least-recently-used cache](http://en.wikipedia.org/wiki/Cache_algorithms)
+- * with hash lookup made possible by keeping a list of keys in parallel to
+- * an array of dictionary of values
+- *
+- * @param {number} max number of permitted values
+- * @param {Function} onRemove callback called with items when they expire
+- * @private
+- */
+-function LRUCache(max, onRemove) {
+-    this.max = max;
+-    this.onRemove = onRemove;
+-    this.reset();
+-}
++module.exports = CollisionTile;
+ 
+ /**
+- * Clear the cache
++ * A collision tile used to prevent symbols from overlapping. It keep tracks of
++ * where previous symbols have been placed and is used to check if a new
++ * symbol overlaps with any previously added symbols.
+  *
+- * @returns {LRUCache} this cache
++ * @class CollisionTile
++ * @param {number} angle
++ * @param {number} pitch
+  * @private
+  */
+-LRUCache.prototype.reset = function() {
+-    for (var key in this.data) {
+-        this.onRemove(this.data[key]);
++function CollisionTile(angle, pitch, collisionBoxArray) {
++    if (typeof angle === 'object') {
++        var serialized = angle;
++        collisionBoxArray = pitch;
++        angle = serialized.angle;
++        pitch = serialized.pitch;
++        this.grid = new Grid(serialized.grid);
++        this.ignoredGrid = new Grid(serialized.ignoredGrid);
++    } else {
++        this.grid = new Grid(EXTENT, 12, 6);
++        this.ignoredGrid = new Grid(EXTENT, 12, 0);
+     }
+ 
+-    this.data = {};
+-    this.order = [];
++    this.angle = angle;
++    this.pitch = pitch;
+ 
+-    return this;
+-};
++    var sin = Math.sin(angle),
++        cos = Math.cos(angle);
++    this.rotationMatrix = [cos, -sin, sin, cos];
++    this.reverseRotationMatrix = [cos, sin, -sin, cos];
+ 
+-/**
+- * Add a key, value combination to the cache, trimming its size if this pushes
+- * it over max length.
+- *
+- * @param {string} key lookup key for the item
+- * @param {*} data any value
+- *
+- * @returns {LRUCache} this cache
+- * @private
+- */
+-LRUCache.prototype.add = function(key, data) {
++    // Stretch boxes in y direction to account for the map tilt.
++    this.yStretch = 1 / Math.cos(pitch / 180 * Math.PI);
+ 
+-    if (this.has(key)) {
+-        this.order.splice(this.order.indexOf(key), 1);
+-        this.data[key] = data;
+-        this.order.push(key);
++    // The amount the map is squished depends on the y position.
++    // Sort of account for this by making all boxes a bit bigger.
++    this.yStretch = Math.pow(this.yStretch, 1.3);
+ 
+-    } else {
+-        this.data[key] = data;
+-        this.order.push(key);
++    this.collisionBoxArray = collisionBoxArray;
++    if (collisionBoxArray.length === 0) {
++        // the first collisionBoxArray is passed to a CollisionTile
+ 
+-        if (this.order.length > this.max) {
+-            var removedData = this.get(this.order[0]);
+-            if (removedData) this.onRemove(removedData);
+-        }
++        // tempCollisionBox
++        collisionBoxArray.emplaceBack();
++
++        var maxInt16 = 32767;
++        //left
++        collisionBoxArray.emplaceBack(0, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
++        // right
++        collisionBoxArray.emplaceBack(EXTENT, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
++        // top
++        collisionBoxArray.emplaceBack(0, 0, -maxInt16, 0, maxInt16, 0, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
++        // bottom
++        collisionBoxArray.emplaceBack(0, EXTENT, -maxInt16, 0, maxInt16, 0, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
+     }
+ 
+-    return this;
+-};
++    this.tempCollisionBox = collisionBoxArray.get(0);
++    this.edges = [
++        collisionBoxArray.get(1),
++        collisionBoxArray.get(2),
++        collisionBoxArray.get(3),
++        collisionBoxArray.get(4)
++    ];
++}
+ 
+-/**
+- * Determine whether the value attached to `key` is present
+- *
+- * @param {string} key the key to be looked-up
+- * @returns {boolean} whether the cache has this value
+- * @private
+- */
+-LRUCache.prototype.has = function(key) {
+-    return key in this.data;
++CollisionTile.prototype.serialize = function() {
++    var data = {
++        angle: this.angle,
++        pitch: this.pitch,
++        grid: this.grid.toArrayBuffer(),
++        ignoredGrid: this.ignoredGrid.toArrayBuffer()
++    };
++    return {
++        data: data,
++        transferables: [data.grid, data.ignoredGrid]
++    };
+ };
+ 
+-/**
+- * List all keys in the cache
+- *
+- * @returns {Array<string>} an array of keys in this cache.
+- * @private
+- */
+-LRUCache.prototype.keys = function() {
+-    return this.order;
+-};
++CollisionTile.prototype.minScale = 0.25;
++CollisionTile.prototype.maxScale = 2;
++
+ 
+ /**
+- * Get the value attached to a specific key. If the key is not found,
+- * returns `null`
++ * Find the scale at which the collisionFeature can be shown without
++ * overlapping with other features.
+  *
+- * @param {string} key the key to look up
+- * @returns {*} the data, or null if it isn't found
++ * @param {CollisionFeature} collisionFeature
++ * @returns {number} placementScale
+  * @private
+  */
+-LRUCache.prototype.get = function(key) {
+-    if (!this.has(key)) { return null; }
++CollisionTile.prototype.placeCollisionFeature = function(collisionFeature, allowOverlap, avoidEdges) {
+ 
+-    var data = this.data[key];
++    var collisionBoxArray = this.collisionBoxArray;
++    var minPlacementScale = this.minScale;
++    var rotationMatrix = this.rotationMatrix;
++    var yStretch = this.yStretch;
+ 
+-    delete this.data[key];
+-    this.order.splice(this.order.indexOf(key), 1);
++    for (var b = collisionFeature.boxStartIndex; b < collisionFeature.boxEndIndex; b++) {
+ 
+-    return data;
+-};
++        var box = collisionBoxArray.get(b);
+ 
+-/**
+- * Change the max size of the cache.
+- *
+- * @param {number} max the max size of the cache
+- * @returns {LRUCache} this cache
+- * @private
+- */
+-LRUCache.prototype.setMaxSize = function(max) {
+-    this.max = max;
++        var anchorPoint = box.anchorPoint._matMult(rotationMatrix);
++        var x = anchorPoint.x;
++        var y = anchorPoint.y;
+ 
+-    while (this.order.length > this.max) {
+-        var removedData = this.get(this.order[0]);
+-        if (removedData) this.onRemove(removedData);
++        var x1 = x + box.x1;
++        var y1 = y + box.y1 * yStretch;
++        var x2 = x + box.x2;
++        var y2 = y + box.y2 * yStretch;
++
++        box.bbox0 = x1;
++        box.bbox1 = y1;
++        box.bbox2 = x2;
++        box.bbox3 = y2;
++
++        if (!allowOverlap) {
++            var blockingBoxes = this.grid.query(x1, y1, x2, y2);
++
++            for (var i = 0; i < blockingBoxes.length; i++) {
++                var blocking = collisionBoxArray.get(blockingBoxes[i]);
++                var blockingAnchorPoint = blocking.anchorPoint._matMult(rotationMatrix);
++
++                minPlacementScale = this.getPlacementScale(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking);
++                if (minPlacementScale >= this.maxScale) {
++                    return minPlacementScale;
++                }
++            }
++        }
++
++        if (avoidEdges) {
++            var rotatedCollisionBox;
++
++            if (this.angle) {
++                var reverseRotationMatrix = this.reverseRotationMatrix;
++                var tl = new Point(box.x1, box.y1).matMult(reverseRotationMatrix);
++                var tr = new Point(box.x2, box.y1).matMult(reverseRotationMatrix);
++                var bl = new Point(box.x1, box.y2).matMult(reverseRotationMatrix);
++                var br = new Point(box.x2, box.y2).matMult(reverseRotationMatrix);
++
++                rotatedCollisionBox = this.tempCollisionBox;
++                rotatedCollisionBox.anchorPointX = box.anchorPoint.x;
++                rotatedCollisionBox.anchorPointY = box.anchorPoint.y;
++                rotatedCollisionBox.x1 = Math.min(tl.x, tr.x, bl.x, br.x);
++                rotatedCollisionBox.y1 = Math.min(tl.y, tr.x, bl.x, br.x);
++                rotatedCollisionBox.x2 = Math.max(tl.x, tr.x, bl.x, br.x);
++                rotatedCollisionBox.y2 = Math.max(tl.y, tr.x, bl.x, br.x);
++                rotatedCollisionBox.maxScale = box.maxScale;
++            } else {
++                rotatedCollisionBox = box;
++            }
++
++            for (var k = 0; k < this.edges.length; k++) {
++                var edgeBox = this.edges[k];
++                minPlacementScale = this.getPlacementScale(minPlacementScale, box.anchorPoint, rotatedCollisionBox, edgeBox.anchorPoint, edgeBox);
++                if (minPlacementScale >= this.maxScale) {
++                    return minPlacementScale;
++                }
++            }
++        }
+     }
+ 
+-    return this;
++    return minPlacementScale;
+ };
+ 
+-},{}],346:[function(require,module,exports){
+-'use strict';
++CollisionTile.prototype.queryRenderedSymbols = function(minX, minY, maxX, maxY, scale) {
++    var sourceLayerFeatures = {};
++    var result = [];
++
++    var collisionBoxArray = this.collisionBoxArray;
++    var rotationMatrix = this.rotationMatrix;
++    var anchorPoint = new Point(minX, minY)._matMult(rotationMatrix);
++
++    var queryBox = this.tempCollisionBox;
++    queryBox.anchorX = anchorPoint.x;
++    queryBox.anchorY = anchorPoint.y;
++    queryBox.x1 = 0;
++    queryBox.y1 = 0;
++    queryBox.x2 = maxX - minX;
++    queryBox.y2 = maxY - minY;
++    queryBox.maxScale = scale;
+ 
+-var config = require('./config');
+-var browser = require('./browser');
++    // maxScale is stored using a Float32. Convert `scale` to the stored Float32 value.
++    scale = queryBox.maxScale;
+ 
+-function normalizeURL(url, pathPrefix, accessToken) {
+-    accessToken = accessToken || config.ACCESS_TOKEN;
++    var searchBox = [
++        anchorPoint.x + queryBox.x1 / scale,
++        anchorPoint.y + queryBox.y1 / scale * this.yStretch,
++        anchorPoint.x + queryBox.x2 / scale,
++        anchorPoint.y + queryBox.y2 / scale * this.yStretch
++    ];
+ 
+-    if (!accessToken && config.REQUIRE_ACCESS_TOKEN) {
+-        throw new Error('An API access token is required to use Mapbox GL. ' +
+-            'See https://www.mapbox.com/developers/api/#access-tokens');
++    var blockingBoxKeys = this.grid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
++    var blockingBoxKeys2 = this.ignoredGrid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
++    for (var k = 0; k < blockingBoxKeys2.length; k++) {
++        blockingBoxKeys.push(blockingBoxKeys2[k]);
+     }
+ 
+-    url = url.replace(/^mapbox:\/\//, config.API_URL + pathPrefix);
+-    url += url.indexOf('?') !== -1 ? '&access_token=' : '?access_token=';
++    for (var i = 0; i < blockingBoxKeys.length; i++) {
++        var blocking = collisionBoxArray.get(blockingBoxKeys[i]);
+ 
+-    if (config.REQUIRE_ACCESS_TOKEN) {
+-        if (accessToken[0] === 's') {
+-            throw new Error('Use a public access token (pk.*) with Mapbox GL JS, not a secret access token (sk.*). ' +
+-                'See https://www.mapbox.com/developers/api/#access-tokens');
++        var sourceLayer = blocking.sourceLayerIndex;
++        var featureIndex = blocking.featureIndex;
++        if (sourceLayerFeatures[sourceLayer] === undefined) {
++            sourceLayerFeatures[sourceLayer] = {};
+         }
+ 
+-        url += accessToken;
++        if (!sourceLayerFeatures[sourceLayer][featureIndex]) {
++            var blockingAnchorPoint = blocking.anchorPoint.matMult(rotationMatrix);
++            var minPlacementScale = this.getPlacementScale(this.minScale, anchorPoint, queryBox, blockingAnchorPoint, blocking);
++            if (minPlacementScale >= scale) {
++                sourceLayerFeatures[sourceLayer][featureIndex] = true;
++                result.push(blockingBoxKeys[i]);
++            }
++        }
+     }
+ 
+-    return url;
+-}
++    return result;
++};
+ 
+-module.exports.normalizeStyleURL = function(url, accessToken) {
+-    if (!url.match(/^mapbox:\/\/styles\//))
+-        return url;
++CollisionTile.prototype.getPlacementScale = function(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking) {
+ 
+-    var split = url.split('/');
+-    var user = split[3];
+-    var style = split[4];
+-    var draft = split[5] ? '/draft' : '';
+-    return normalizeURL('mapbox://' + user + '/' + style + draft, '/styles/v1/', accessToken);
+-};
++    // Find the lowest scale at which the two boxes can fit side by side without overlapping.
++    // Original algorithm:
++    var anchorDiffX = anchorPoint.x - blockingAnchorPoint.x;
++    var anchorDiffY = anchorPoint.y - blockingAnchorPoint.y;
++    var s1 = (blocking.x1 - box.x2) / anchorDiffX; // scale at which new box is to the left of old box
++    var s2 = (blocking.x2 - box.x1) / anchorDiffX; // scale at which new box is to the right of old box
++    var s3 = (blocking.y1 - box.y2) * this.yStretch / anchorDiffY; // scale at which new box is to the top of old box
++    var s4 = (blocking.y2 - box.y1) * this.yStretch / anchorDiffY; // scale at which new box is to the bottom of old box
+ 
+-module.exports.normalizeSourceURL = function(url, accessToken) {
+-    if (!url.match(/^mapbox:\/\//))
+-        return url;
++    if (isNaN(s1) || isNaN(s2)) s1 = s2 = 1;
++    if (isNaN(s3) || isNaN(s4)) s3 = s4 = 1;
+ 
+-    // TileJSON requests need a secure flag appended to their URLs so
+-    // that the server knows to send SSL-ified resource references.
+-    return normalizeURL(url + '.json', '/v4/', accessToken) + '&secure';
+-};
++    var collisionFreeScale = Math.min(Math.max(s1, s2), Math.max(s3, s4));
++    var blockingMaxScale = blocking.maxScale;
++    var boxMaxScale = box.maxScale;
+ 
+-module.exports.normalizeGlyphsURL = function(url, accessToken) {
+-    if (!url.match(/^mapbox:\/\//))
+-        return url;
++    if (collisionFreeScale > blockingMaxScale) {
++        // After a box's maxScale the label has shrunk enough that the box is no longer needed to cover it,
++        // so unblock the new box at the scale that the old box disappears.
++        collisionFreeScale = blockingMaxScale;
++    }
+ 
+-    var user = url.split('/')[3];
+-    return normalizeURL('mapbox://' + user + '/{fontstack}/{range}.pbf', '/fonts/v1/', accessToken);
+-};
++    if (collisionFreeScale > boxMaxScale) {
++        // If the box can only be shown after it is visible, then the box can never be shown.
++        // But the label can be shown after this box is not visible.
++        collisionFreeScale = boxMaxScale;
++    }
+ 
+-module.exports.normalizeSpriteURL = function(url, format, ext, accessToken) {
+-    if (!url.match(/^mapbox:\/\/sprites\//))
+-        return url + format + ext;
++    if (collisionFreeScale > minPlacementScale &&
++            collisionFreeScale >= blocking.placementScale) {
++        // If this collision occurs at a lower scale than previously found collisions
++        // and the collision occurs while the other label is visible
+ 
+-    var split = url.split('/');
+-    var user = split[3];
+-    var style = split[4];
+-    var draft = split[5] ? '/draft' : '';
+-    return normalizeURL('mapbox://' + user + '/' + style + draft + '/sprite' + format + ext, '/styles/v1/', accessToken);
++        // this this is the lowest scale at which the label won't collide with anything
++        minPlacementScale = collisionFreeScale;
++    }
++
++    return minPlacementScale;
+ };
+ 
+-module.exports.normalizeTileURL = function(url, sourceUrl, tileSize) {
+-    if (!sourceUrl || !sourceUrl.match(/^mapbox:\/\//))
+-        return url;
+ 
+-    // The v4 mapbox tile API supports 512x512 image tiles only when @2x
+-    // is appended to the tile URL. If `tileSize: 512` is specified for
+-    // a Mapbox raster source force the @2x suffix even if a non hidpi
+-    // device.
+-    url = url.replace(/([?&]access_token=)tk\.[^&]+/, '$1' + config.ACCESS_TOKEN);
+-    var extension = browser.supportsWebp ? 'webp' : '$1';
+-    return url.replace(/\.((?:png|jpg)\d*)(?=$|\?)/, browser.devicePixelRatio >= 2 || tileSize === 512 ? '@2x.' + extension : '.' + extension);
++/**
++ * Remember this collisionFeature and what scale it was placed at to block
++ * later features from overlapping with it.
++ *
++ * @param {CollisionFeature} collisionFeature
++ * @param {number} minPlacementScale
++ * @private
++ */
++CollisionTile.prototype.insertCollisionFeature = function(collisionFeature, minPlacementScale, ignorePlacement) {
++
++    var grid = ignorePlacement ? this.ignoredGrid : this.grid;
++    var collisionBoxArray = this.collisionBoxArray;
++
++    for (var k = collisionFeature.boxStartIndex; k < collisionFeature.boxEndIndex; k++) {
++        var box = collisionBoxArray.get(k);
++        box.placementScale = minPlacementScale;
++        if (minPlacementScale < this.maxScale) {
++            grid.insert(k, box.bbox0, box.bbox1, box.bbox2, box.bbox3);
++        }
++    }
+ };
+ 
+-},{"./browser":335,"./config":339}],347:[function(require,module,exports){
++},{"../data/bucket":260,"grid-index":222,"point-geometry":400}],322:[function(require,module,exports){
+ 'use strict';
+ 
+-// Note: all "sizes" are measured in bytes
++var interpolate = require('../util/interpolate');
++var Anchor = require('../symbol/anchor');
++var checkMaxAngle = require('./check_max_angle');
+ 
+-var assert = require('assert');
++module.exports = getAnchors;
+ 
+-module.exports = StructArrayType;
++function getAnchors(line, spacing, maxAngle, shapedText, shapedIcon, glyphSize, boxScale, overscaling, tileExtent) {
+ 
+-var viewTypes = {
+-    'Int8': Int8Array,
+-    'Uint8': Uint8Array,
+-    'Uint8Clamped': Uint8ClampedArray,
+-    'Int16': Int16Array,
+-    'Uint16': Uint16Array,
+-    'Int32': Int32Array,
+-    'Uint32': Uint32Array,
+-    'Float32': Float32Array,
+-    'Float64': Float64Array
+-};
++    // Resample a line to get anchor points for labels and check that each
++    // potential label passes text-max-angle check and has enough froom to fit
++    // on the line.
+ 
+-/**
+- * @typedef StructMember
+- * @private
+- * @property {string} name
+- * @property {string} type
+- * @property {number} components
+- */
++    var angleWindowSize = shapedText ?
++        3 / 5 * glyphSize * boxScale :
++        0;
+ 
+-var structArrayTypeCache = {};
++    var labelLength = Math.max(
++        shapedText ? shapedText.right - shapedText.left : 0,
++        shapedIcon ? shapedIcon.right - shapedIcon.left : 0);
+ 
+-/**
+- * `StructArrayType` is used to create new `StructArray` types.
+- *
+- * `StructArray` provides an abstraction over `ArrayBuffer` and `TypedArray` making it behave like
+- * an array of typed structs. A StructArray is comprised of elements. Each element has a set of
+- * members that are defined when the `StructArrayType` is created.
+- *
+- * StructArrays useful for creating large arrays that:
+- * - can be transferred from workers as a Transferable object
+- * - can be copied cheaply
+- * - use less memory for lower-precision members
+- * - can be used as buffers in WebGL.
+- *
+- * @class StructArrayType
+- * @param {Array.<StructMember>}
+- * @param options
+- * @param {number} options.alignment Use `4` to align members to 4 byte boundaries. Default is 1.
+- *
+- * @example
+- *
+- * var PointArrayType = new StructArrayType({
+- *  members: [
+- *      { type: 'Int16', name: 'x' },
+- *      { type: 'Int16', name: 'y' }
+- *  ]});
+- *
+- *  var pointArray = new PointArrayType();
+- *  pointArray.emplaceBack(10, 15);
+- *  pointArray.emplaceBack(20, 35);
+- *
+- *  point = pointArray.get(0);
+- *  assert(point.x === 10);
+- *  assert(point.y === 15);
+- *
+- * @private
+- */
+-function StructArrayType(options) {
++    // Is the line continued from outside the tile boundary?
++    var isLineContinued = line[0].x === 0 || line[0].x === tileExtent || line[0].y === 0 || line[0].y === tileExtent;
+ 
+-    var key = JSON.stringify(options);
+-    if (structArrayTypeCache[key]) {
+-        return structArrayTypeCache[key];
++    // Is the label long, relative to the spacing?
++    // If so, adjust the spacing so there is always a minimum space of `spacing / 4` between label edges.
++    if (spacing - labelLength * boxScale  < spacing / 4) {
++        spacing = labelLength * boxScale + spacing / 4;
+     }
+ 
+-    if (options.alignment === undefined) options.alignment = 1;
++    // Offset the first anchor by:
++    // Either half the label length plus a fixed extra offset if the line is not continued
++    // Or half the spacing if the line is continued.
+ 
+-    function StructType() {
+-        Struct.apply(this, arguments);
+-    }
++    // For non-continued lines, add a bit of fixed extra offset to avoid collisions at T intersections.
++    var fixedExtraOffset = glyphSize * 2;
+ 
+-    StructType.prototype = Object.create(Struct.prototype);
++    var offset = !isLineContinued ?
++        ((labelLength / 2 + fixedExtraOffset) * boxScale * overscaling) % spacing :
++        (spacing / 2 * overscaling) % spacing;
+ 
+-    var offset = 0;
+-    var maxSize = 0;
+-    var usedTypes = ['Uint8'];
++    return resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength * boxScale, isLineContinued, false, tileExtent);
++}
+ 
+-    StructType.prototype.members = options.members.map(function(member) {
+-        member = {
+-            name: member.name,
+-            type: member.type,
+-            components: member.components || 1
+-        };
+ 
+-        assert(member.name.length);
+-        assert(member.type in viewTypes);
++function resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, placeAtMiddle, tileExtent) {
+ 
+-        if (usedTypes.indexOf(member.type) < 0) usedTypes.push(member.type);
++    var halfLabelLength = labelLength / 2;
++    var lineLength = 0;
++    for (var k = 0; k < line.length - 1; k++) {
++        lineLength += line[k].dist(line[k + 1]);
++    }
+ 
+-        var typeSize = sizeOf(member.type);
+-        maxSize = Math.max(maxSize, typeSize);
+-        member.offset = offset = align(offset, Math.max(options.alignment, typeSize));
++    var distance = 0,
++        markedDistance = offset - spacing;
+ 
+-        for (var c = 0; c < member.components; c++) {
+-            Object.defineProperty(StructType.prototype, member.name + (member.components === 1 ? '' : c), {
+-                get: createGetter(member, c),
+-                set: createSetter(member, c)
+-            });
+-        }
++    var anchors = [];
+ 
+-        offset += typeSize * member.components;
++    for (var i = 0; i < line.length - 1; i++) {
+ 
+-        return member;
+-    });
++        var a = line[i],
++            b = line[i + 1];
+ 
+-    StructType.prototype.alignment = options.alignment;
+-    StructType.prototype.size = align(offset, Math.max(maxSize, options.alignment));
++        var segmentDist = a.dist(b),
++            angle = b.angleTo(a);
+ 
+-    function StructArrayType() {
+-        StructArray.apply(this, arguments);
+-        this.members = StructType.prototype.members;
+-    }
++        while (markedDistance + spacing < distance + segmentDist) {
++            markedDistance += spacing;
+ 
+-    StructArrayType.serialize = serializeStructArrayType;
++            var t = (markedDistance - distance) / segmentDist,
++                x = interpolate(a.x, b.x, t),
++                y = interpolate(a.y, b.y, t);
+ 
+-    StructArrayType.prototype = Object.create(StructArray.prototype);
+-    StructArrayType.prototype.StructType = StructType;
+-    StructArrayType.prototype.bytesPerElement = StructType.prototype.size;
+-    StructArrayType.prototype.emplaceBack = createEmplaceBack(StructType.prototype.members, StructType.prototype.size);
+-    StructArrayType.prototype._usedTypes = usedTypes;
++            // Check that the point is within the tile boundaries and that
++            // the label would fit before the beginning and end of the line
++            // if placed at this point.
++            if (x >= 0 && x < tileExtent && y >= 0 && y < tileExtent &&
++                    markedDistance - halfLabelLength >= 0 &&
++                    markedDistance + halfLabelLength <= lineLength) {
++                var anchor = new Anchor(x, y, angle, i)._round();
+ 
++                if (!angleWindowSize || checkMaxAngle(line, anchor, labelLength, angleWindowSize, maxAngle)) {
++                    anchors.push(anchor);
++                }
++            }
++        }
+ 
+-    structArrayTypeCache[key] = StructArrayType;
++        distance += segmentDist;
++    }
+ 
+-    return StructArrayType;
+-}
++    if (!placeAtMiddle && !anchors.length && !isLineContinued) {
++        // The first attempt at finding anchors at which labels can be placed failed.
++        // Try again, but this time just try placing one anchor at the middle of the line.
++        // This has the most effect for short lines in overscaled tiles, since the
++        // initial offset used in overscaled tiles is calculated to align labels with positions in
++        // parent tiles instead of placing the label as close to the beginning as possible.
++        anchors = resample(line, distance / 2, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, true, tileExtent);
++    }
+ 
+-/**
+- * Serialize the StructArray type. This serializes the *type* not an instance of the type.
+- * @private
+- */
+-function serializeStructArrayType() {
+-    return {
+-        members: this.prototype.StructType.prototype.members,
+-        alignment: this.prototype.StructType.prototype.alignment,
+-        bytesPerElement: this.prototype.bytesPerElement
+-    };
++    return anchors;
+ }
+ 
++},{"../symbol/anchor":316,"../util/interpolate":356,"./check_max_angle":317}],323:[function(require,module,exports){
++'use strict';
+ 
+-function align(offset, size) {
+-    return Math.ceil(offset / size) * size;
+-}
++var ShelfPack = require('shelf-pack');
+ 
+-function sizeOf(type) {
+-    return viewTypes[type].BYTES_PER_ELEMENT;
+-}
++module.exports = GlyphAtlas;
++function GlyphAtlas(width, height) {
++    this.width = width;
++    this.height = height;
+ 
+-function getArrayViewName(type) {
+-    return type.toLowerCase();
++    this.bin = new ShelfPack(width, height);
++    this.index = {};
++    this.ids = {};
++    this.data = new Uint8Array(width * height);
+ }
+ 
++GlyphAtlas.prototype.getGlyphs = function() {
++    var glyphs = {},
++        split,
++        name,
++        id;
+ 
+-/*
+- * > I saw major perf gains by shortening the source of these generated methods (i.e. renaming
+- * > elementIndex to i) (likely due to v8 inlining heuristics).
+- * - lucaswoj
+- */
+-function createEmplaceBack(members, bytesPerElement) {
+-    var usedTypeSizes = [];
+-    var argNames = [];
+-    var body = '' +
+-    'var i = this.length;\n' +
+-    'this.resize(this.length + 1);\n';
++    for (var key in this.ids) {
++        split = key.split('#');
++        name = split[0];
++        id = split[1];
+ 
+-    for (var m = 0; m < members.length; m++) {
+-        var member = members[m];
+-        var size = sizeOf(member.type);
++        if (!glyphs[name]) glyphs[name] = [];
++        glyphs[name].push(id);
++    }
+ 
+-        if (usedTypeSizes.indexOf(size) < 0) {
+-            usedTypeSizes.push(size);
+-            body += 'var o' + size.toFixed(0) + ' = i * ' + (bytesPerElement / size).toFixed(0) + ';\n';
+-        }
++    return glyphs;
++};
+ 
+-        for (var c = 0; c < member.components; c++) {
+-            var argName = 'v' + argNames.length;
+-            var index = 'o' + size.toFixed(0) + ' + ' + (member.offset / size + c).toFixed(0);
+-            body += 'this.' + getArrayViewName(member.type) + '[' + index + '] = ' + argName + ';\n';
+-            argNames.push(argName);
+-        }
++GlyphAtlas.prototype.getRects = function() {
++    var rects = {},
++        split,
++        name,
++        id;
++
++    for (var key in this.ids) {
++        split = key.split('#');
++        name = split[0];
++        id = split[1];
++
++        if (!rects[name]) rects[name] = {};
++        rects[name][id] = this.index[key];
+     }
+ 
+-    body += 'return i;';
++    return rects;
++};
+ 
+-    return new Function(argNames, body);
+-}
+ 
+-function createMemberComponentString(member, component) {
+-    var elementOffset = 'this._pos' + sizeOf(member.type).toFixed(0);
+-    var componentOffset = (member.offset / sizeOf(member.type) + component).toFixed(0);
+-    var index = elementOffset + ' + ' + componentOffset;
+-    return 'this._structArray.' + getArrayViewName(member.type) + '[' + index + ']';
++GlyphAtlas.prototype.addGlyph = function(id, name, glyph, buffer) {
++    if (!glyph) {
++        // console.warn('missing glyph', code, String.fromCharCode(code));
++        return null;
++    }
++    var key = name + "#" + glyph.id;
+ 
+-}
++    // The glyph is already in this texture.
++    if (this.index[key]) {
++        if (this.ids[key].indexOf(id) < 0) {
++            this.ids[key].push(id);
++        }
++        return this.index[key];
++    }
+ 
+-function createGetter(member, c) {
+-    return new Function([], 'return ' + createMemberComponentString(member, c) + ';');
+-}
++    // The glyph bitmap has zero width.
++    if (!glyph.bitmap) {
++        return null;
++    }
+ 
+-function createSetter(member, c) {
+-    return new Function(['x'], createMemberComponentString(member, c) + ' = x;');
+-}
++    var bufferedWidth = glyph.width + buffer * 2;
++    var bufferedHeight = glyph.height + buffer * 2;
+ 
+-/**
+- * @class Struct
+- * @param {StructArray} structArray The StructArray the struct is stored in
+- * @param {number} index The index of the struct in the StructArray.
+- * @private
+- */
+-function Struct(structArray, index) {
+-    this._structArray = structArray;
+-    this._pos1 = index * this.size;
+-    this._pos2 = this._pos1 / 2;
+-    this._pos4 = this._pos1 / 4;
+-    this._pos8 = this._pos1 / 8;
+-}
++    // Add a 1px border around every image.
++    var padding = 1;
++    var packWidth = bufferedWidth + 2 * padding;
++    var packHeight = bufferedHeight + 2 * padding;
+ 
+-/**
+- * @class StructArray
+- * The StructArray class is inherited by the custom StructArrayType classes created with
+- * `new StructArrayType(members, options)`.
+- * @private
+- */
+-function StructArray(serialized) {
+-    if (serialized !== undefined) {
+-    // Create from an serialized StructArray
+-        this.arrayBuffer = serialized.arrayBuffer;
+-        this.length = serialized.length;
+-        this.capacity = this.arrayBuffer.byteLength / this.bytesPerElement;
+-        this._refreshViews();
++    // Increase to next number divisible by 4, but at least 1.
++    // This is so we can scale down the texture coordinates and pack them
++    // into 2 bytes rather than 4 bytes.
++    packWidth += (4 - packWidth % 4);
++    packHeight += (4 - packHeight % 4);
+ 
+-    // Create a new StructArray
+-    } else {
+-        this.capacity = -1;
+-        this.resize(0);
++    var rect = this.bin.packOne(packWidth, packHeight);
++    if (!rect) {
++        this.resize();
++        rect = this.bin.packOne(packWidth, packHeight);
++    }
++    if (!rect) {
++        console.warn('glyph bitmap overflow');
++        return null;
+     }
+-}
+-
+-/**
+- * @property {number}
+- * @private
+- * @readonly
+- */
+-StructArray.prototype.DEFAULT_CAPACITY = 128;
+ 
+-/**
+- * @property {number}
+- * @private
+- * @readonly
+- */
+-StructArray.prototype.RESIZE_MULTIPLIER = 5;
++    this.index[key] = rect;
++    this.ids[key] = [id];
+ 
+-/**
+- * Serialize this StructArray instance
+- * @private
+- */
+-StructArray.prototype.serialize = function() {
+-    this.trim();
+-    return {
+-        length: this.length,
+-        arrayBuffer: this.arrayBuffer
+-    };
+-};
++    var target = this.data;
++    var source = glyph.bitmap;
++    for (var y = 0; y < bufferedHeight; y++) {
++        var y1 = this.width * (rect.y + y + padding) + rect.x + padding;
++        var y2 = bufferedWidth * y;
++        for (var x = 0; x < bufferedWidth; x++) {
++            target[y1 + x] = source[y2 + x];
++        }
++    }
+ 
+-/**
+- * Return the Struct at the given location in the array.
+- * @private
+- * @param {number} index The index of the element.
+- */
+-StructArray.prototype.get = function(index) {
+-    return new this.StructType(this, index);
++    this.dirty = true;
++
++    return rect;
+ };
+ 
+-/**
+- * Resize the array to discard unused capacity.
+- * @private
+- */
+-StructArray.prototype.trim = function() {
+-    if (this.length !== this.capacity) {
+-        this.capacity = this.length;
+-        this.arrayBuffer = this.arrayBuffer.slice(0, this.length * this.bytesPerElement);
+-        this._refreshViews();
++GlyphAtlas.prototype.resize = function() {
++    var origw = this.width,
++        origh = this.height;
++
++    // For now, don't grow the atlas beyond 1024x1024 because of how
++    // texture coords pack into unsigned byte in symbol bucket.
++    if (origw > 512 || origh > 512) return;
++
++    if (this.texture) {
++        if (this.gl) {
++            this.gl.deleteTexture(this.texture);
++        }
++        this.texture = null;
++    }
++
++    this.width *= 2;
++    this.height *= 2;
++    this.bin.resize(this.width, this.height);
++
++    var buf = new ArrayBuffer(this.width * this.height),
++        src, dst;
++    for (var i = 0; i < origh; i++) {
++        src = new Uint8Array(this.data.buffer, origh * i, origw);
++        dst = new Uint8Array(buf, origh * i * 2, origw);
++        dst.set(src);
+     }
++    this.data = new Uint8Array(buf);
+ };
+ 
+-/**
+- * Resize the array.
+- * If `n` is greater than the current length then additional elements with undefined values are added.
+- * If `n` is less than the current length then the array will be reduced to the first `n` elements.
+- * @param {number} n The new size of the array.
+- */
+-StructArray.prototype.resize = function(n) {
+-    this.length = n;
+-    if (n > this.capacity) {
+-        this.capacity = Math.max(n, Math.floor(this.capacity * this.RESIZE_MULTIPLIER), this.DEFAULT_CAPACITY);
+-        this.arrayBuffer = new ArrayBuffer(this.capacity * this.bytesPerElement);
++GlyphAtlas.prototype.bind = function(gl) {
++    this.gl = gl;
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, this.width, this.height, 0, gl.ALPHA, gl.UNSIGNED_BYTE, null);
+ 
+-        var oldUint8Array = this.uint8;
+-        this._refreshViews();
+-        if (oldUint8Array) this.uint8.set(oldUint8Array);
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+     }
+ };
+ 
+-/**
+- * Create TypedArray views for the current ArrayBuffer.
+- * @private
+- */
+-StructArray.prototype._refreshViews = function() {
+-    for (var t = 0; t < this._usedTypes.length; t++) {
+-        var type = this._usedTypes[t];
+-        this[getArrayViewName(type)] = new viewTypes[type](this.arrayBuffer);
++GlyphAtlas.prototype.updateTexture = function(gl) {
++    this.bind(gl);
++    if (this.dirty) {
++        gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.ALPHA, gl.UNSIGNED_BYTE, this.data);
++        this.dirty = false;
+     }
+ };
+ 
+-},{"assert":52}],348:[function(require,module,exports){
++},{"shelf-pack":424}],324:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = resolveTokens;
++var normalizeURL = require('../util/mapbox').normalizeGlyphsURL;
++var getArrayBuffer = require('../util/ajax').getArrayBuffer;
++var Glyphs = require('../util/glyphs');
++var GlyphAtlas = require('../symbol/glyph_atlas');
++var Protobuf = require('pbf');
++
++module.exports = GlyphSource;
+ 
+ /**
+- * Replace tokens in a string template with values in an object
++ * A glyph source has a URL from which to load new glyphs and manages
++ * GlyphAtlases in which to store glyphs used by the requested fontstacks
++ * and ranges.
+  *
+- * @param {Object} properties a key/value relationship between tokens and replacements
+- * @param {string} text the template string
+- * @returns {string} the template with tokens replaced
++ * @param {string} url glyph template url
+  * @private
+  */
+-function resolveTokens(properties, text) {
+-    return text.replace(/{([^{}()\[\]<>$=:;.,^]+)}/g, function(match, key) {
+-        return key in properties ? properties[key] : '';
+-    });
++function GlyphSource(url) {
++    this.url = url && normalizeURL(url);
++    this.atlases = {};
++    this.stacks = {};
++    this.loading = {};
+ }
+ 
+-},{}],349:[function(require,module,exports){
+-'use strict';
++GlyphSource.prototype.getSimpleGlyphs = function(fontstack, glyphIDs, uid, callback) {
++    if (this.stacks[fontstack] === undefined) {
++        this.stacks[fontstack] = {};
++    }
++    if (this.atlases[fontstack] === undefined) {
++        this.atlases[fontstack] = new GlyphAtlas(128, 128);
++    }
+ 
+-var UnitBezier = require('unitbezier');
+-var Coordinate = require('../geo/coordinate');
++    var glyphs = {};
++    var stack = this.stacks[fontstack];
++    var atlas = this.atlases[fontstack];
+ 
+-/**
+- * Given a value `t` that varies between 0 and 1, return
+- * an interpolation function that eases between 0 and 1 in a pleasing
+- * cubic in-out fashion.
+- *
+- * @param {number} t input
+- * @returns {number} input
+- * @private
+- */
+-exports.easeCubicInOut = function (t) {
+-    if (t <= 0) return 0;
+-    if (t >= 1) return 1;
+-    var t2 = t * t,
+-        t3 = t2 * t;
+-    return 4 * (t < 0.5 ? t3 : 3 * (t - t2) + t3 - 0.75);
+-};
++    // the number of pixels the sdf bitmaps are padded by
++    var buffer = 3;
+ 
+-/**
+- * Given given (x, y), (x1, y1) control points for a bezier curve,
+- * return a function that interpolates along that curve.
+- *
+- * @param {number} p1x control point 1 x coordinate
+- * @param {number} p1y control point 1 y coordinate
+- * @param {number} p2x control point 2 x coordinate
+- * @param {number} p2y control point 2 y coordinate
+- * @returns {Function} interpolator: receives number value, returns
+- * number value.
+- * @private
+- */
+-exports.bezier = function(p1x, p1y, p2x, p2y) {
+-    var bezier = new UnitBezier(p1x, p1y, p2x, p2y);
+-    return function(t) {
+-        return bezier.solve(t);
+-    };
+-};
++    var missing = {};
++    var remaining = 0;
++    var range;
+ 
+-/**
+- * A default bezier-curve powered easing function with
+- * control points (0.25, 0.1) and (0.25, 1)
+- *
+- * @param {number} t
+- * @returns {number} output
+- * @private
+- */
+-exports.ease = exports.bezier(0.25, 0.1, 0.25, 1);
++    for (var i = 0; i < glyphIDs.length; i++) {
++        var glyphID = glyphIDs[i];
++        range = Math.floor(glyphID / 256);
+ 
+-/**
+- * Given a four-element array of numbers that represents a color in
+- * RGBA, return a version for which the RGB components are multiplied
+- * by the A (alpha) component
+- *
+- * @param {Array<number>} color color array
+- * @returns {Array<number>} premultiplied color array
+- * @private
+- */
+-exports.premultiply = function (color) {
+-    if (!color) return null;
+-    var opacity = color[3];
+-    return [
+-        color[0] * opacity,
+-        color[1] * opacity,
+-        color[2] * opacity,
+-        opacity
+-    ];
+-};
++        if (stack[range]) {
++            var glyph = stack[range].glyphs[glyphID];
++            var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
++            if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
++        } else {
++            if (missing[range] === undefined) {
++                missing[range] = [];
++                remaining++;
++            }
++            missing[range].push(glyphID);
++        }
++    }
+ 
+-/**
+- * constrain n to the given range via min + max
+- *
+- * @param {number} n value
+- * @param {number} min the minimum value to be returned
+- * @param {number} max the maximum value to be returned
+- * @returns {number} the clamped value
+- * @private
+- */
+-exports.clamp = function (n, min, max) {
+-    return Math.min(max, Math.max(min, n));
+-};
++    if (!remaining) callback(undefined, glyphs, fontstack);
+ 
+-/*
+- * constrain n to the given range, excluding the minimum, via modular arithmetic
+- * @param {number} n value
+- * @param {number} min the minimum value to be returned, exclusive
+- * @param {number} max the maximum value to be returned, inclusive
+- * @returns {number} constrained number
+- * @private
+- */
+-exports.wrap = function (n, min, max) {
+-    var d = max - min;
+-    var w = ((n - min) % d + d) % d + min;
+-    return (w === min) ? max : w;
+-};
++    var onRangeLoaded = function(err, range, data) {
++        // TODO not be silent about errors
++        if (!err) {
++            var stack = this.stacks[fontstack][range] = data.stacks[0];
++            for (var i = 0; i < missing[range].length; i++) {
++                var glyphID = missing[range][i];
++                var glyph = stack.glyphs[glyphID];
++                var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
++                if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
++            }
++        }
++        remaining--;
++        if (!remaining) callback(undefined, glyphs, fontstack);
++    }.bind(this);
+ 
+-/*
+- * return the first non-null and non-undefined argument to this function.
+- * @returns {*} argument
+- * @private
+- */
+-exports.coalesce = function() {
+-    for (var i = 0; i < arguments.length; i++) {
+-        var arg = arguments[i];
+-        if (arg !== null && arg !== undefined)
+-            return arg;
++    for (var r in missing) {
++        this.loadRange(fontstack, r, onRangeLoaded);
+     }
+ };
+ 
+-/*
+- * Call an asynchronous function on an array of arguments,
+- * calling `callback` with the completed results of all calls.
+- *
+- * @param {Array<*>} array input to each call of the async function.
+- * @param {Function} fn an async function with signature (data, callback)
+- * @param {Function} callback a callback run after all async work is done.
+- * called with an array, containing the results of each async call.
+- * @returns {undefined}
+- * @private
+- */
+-exports.asyncAll = function (array, fn, callback) {
+-    if (!array.length) { return callback(null, []); }
+-    var remaining = array.length;
+-    var results = new Array(array.length);
+-    var error = null;
+-    array.forEach(function (item, i) {
+-        fn(item, function (err, result) {
+-            if (err) error = err;
+-            results[i] = result;
+-            if (--remaining === 0) callback(error, results);
+-        });
+-    });
+-};
++// A simplified representation of the glyph containing only the properties needed for shaping.
++function SimpleGlyph(glyph, rect, buffer) {
++    var padding = 1;
++    this.advance = glyph.advance;
++    this.left = glyph.left - buffer - padding;
++    this.top = glyph.top + buffer + padding;
++    this.rect = rect;
++}
+ 
+-/*
+- * Compute the difference between the keys in one object and the keys
+- * in another object.
+- *
+- * @param {Object} obj
+- * @param {Object} other
+- * @returns {Array<string>} keys difference
+- * @private
+- */
+-exports.keysDifference = function (obj, other) {
+-    var difference = [];
+-    for (var i in obj) {
+-        if (!(i in other)) {
+-            difference.push(i);
+-        }
+-    }
+-    return difference;
+-};
++GlyphSource.prototype.loadRange = function(fontstack, range, callback) {
++    if (range * 256 > 65535) return callback('glyphs > 65535 not supported');
+ 
+-/**
+- * Given a destination object and optionally many source objects,
+- * copy all properties from the source objects into the destination.
+- * The last source object given overrides properties from previous
+- * source objects.
+- * @param {Object} dest destination object
+- * @param {...Object} sources sources from which properties are pulled
+- * @returns {Object} dest
+- * @private
+- */
+-exports.extend = function (dest) {
+-    for (var i = 1; i < arguments.length; i++) {
+-        var src = arguments[i];
+-        for (var k in src) {
+-            dest[k] = src[k];
+-        }
++    if (this.loading[fontstack] === undefined) {
++        this.loading[fontstack] = {};
+     }
+-    return dest;
+-};
++    var loading = this.loading[fontstack];
+ 
+-/**
+- * Extend a destination object with all properties of the src object,
+- * using defineProperty instead of simple assignment.
+- * @param {Object} dest
+- * @param {Object} src
+- * @returns {Object} dest
+- * @private
+- */
+-exports.extendAll = function (dest, src) {
+-    for (var i in src) {
+-        Object.defineProperty(dest, i, Object.getOwnPropertyDescriptor(src, i));
++    if (loading[range]) {
++        loading[range].push(callback);
++    } else {
++        loading[range] = [callback];
++
++        var rangeName = (range * 256) + '-' + (range * 256 + 255);
++        var url = glyphUrl(fontstack, rangeName, this.url);
++
++        getArrayBuffer(url, function(err, data) {
++            var glyphs = !err && new Glyphs(new Protobuf(new Uint8Array(data)));
++            for (var i = 0; i < loading[range].length; i++) {
++                loading[range][i](err, range, glyphs);
++            }
++            delete loading[range];
++        });
+     }
+-    return dest;
+ };
+ 
+-/**
+- * Extend a parent's prototype with all properties in a properties
+- * object.
+- *
+- * @param {Object} parent
+- * @param {Object} props
+- * @returns {Object}
+- * @private
+- */
+-exports.inherit = function (parent, props) {
+-    var parentProto = typeof parent === 'function' ? parent.prototype : parent,
+-        proto = Object.create(parentProto);
+-    exports.extendAll(proto, props);
+-    return proto;
++GlyphSource.prototype.getGlyphAtlas = function(fontstack) {
++    return this.atlases[fontstack];
+ };
+ 
+ /**
+- * Given an object and a number of properties as strings, return version
+- * of that object with only those properties.
+- *
+- * @param {Object} src the object
+- * @param {Array<string>} properties an array of property names chosen
+- * to appear on the resulting object.
+- * @returns {Object} object with limited properties.
+- * @example
+- * var foo = { name: 'Charlie', age: 10 };
+- * var justName = pick(foo, ['name']);
+- * // justName = { name: 'Charlie' }
++ * Use CNAME sharding to load a specific glyph range over a randomized
++ * but consistent subdomain.
++ * @param {string} fontstack comma-joined fonts
++ * @param {string} range comma-joined range
++ * @param {url} url templated url
++ * @param {string} [subdomains=abc] subdomains as a string where each letter is one.
++ * @returns {string} a url to load that section of glyphs
+  * @private
+  */
+-exports.pick = function (src, properties) {
+-    var result = {};
+-    for (var i = 0; i < properties.length; i++) {
+-        var k = properties[i];
+-        if (k in src) {
+-            result[k] = src[k];
+-        }
+-    }
+-    return result;
+-};
++function glyphUrl(fontstack, range, url, subdomains) {
++    subdomains = subdomains || 'abc';
+ 
+-var id = 1;
++    return url
++        .replace('{s}', subdomains[fontstack.length % subdomains.length])
++        .replace('{fontstack}', fontstack)
++        .replace('{range}', range);
++}
+ 
+-/**
+- * Return a unique numeric id, starting at 1 and incrementing with
+- * each call.
+- *
+- * @returns {number} unique numeric id.
+- * @private
+- */
+-exports.uniqueId = function () {
+-    return id++;
+-};
++},{"../symbol/glyph_atlas":323,"../util/ajax":347,"../util/glyphs":355,"../util/mapbox":359,"pbf":394}],325:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Create a version of `fn` that is only called `time` milliseconds
+- * after its last invocation
+- *
+- * @param {Function} fn the function to be debounced
+- * @param {number} time millseconds after which the function will be invoked
+- * @returns {Function} debounced function
+- * @private
+- */
+-exports.debounce = function(fn, time) {
+-    var timer, args;
++module.exports = function (features, textFeatures, geometries) {
+ 
+-    return function() {
+-        args = arguments;
+-        clearTimeout(timer);
++    var leftIndex = {},
++        rightIndex = {},
++        mergedFeatures = [],
++        mergedGeom = [],
++        mergedTexts = [],
++        mergedIndex = 0,
++        k;
+ 
+-        timer = setTimeout(function() {
+-            fn.apply(null, args);
+-        }, time);
+-    };
+-};
++    function add(k) {
++        mergedFeatures.push(features[k]);
++        mergedGeom.push(geometries[k]);
++        mergedTexts.push(textFeatures[k]);
++        mergedIndex++;
++    }
+ 
+-/**
+- * Given an array of member function names as strings, replace all of them
+- * with bound versions that will always refer to `context` as `this`. This
+- * is useful for classes where otherwise event bindings would reassign
+- * `this` to the evented object or some other value: this lets you ensure
+- * the `this` value always.
+- *
+- * @param {Array<string>} fns list of member function names
+- * @param {*} context the context value
+- * @returns {undefined} changes functions in-place
+- * @example
+- * function MyClass() {
+- *   bindAll(['ontimer'], this);
+- *   this.name = 'Tom';
+- * }
+- * MyClass.prototype.ontimer = function() {
+- *   alert(this.name);
+- * };
+- * var myClass = new MyClass();
+- * setTimeout(myClass.ontimer, 100);
+- * @private
+- */
+-exports.bindAll = function(fns, context) {
+-    fns.forEach(function(fn) {
+-        context[fn] = context[fn].bind(context);
+-    });
+-};
++    function mergeFromRight(leftKey, rightKey, geom) {
++        var i = rightIndex[leftKey];
++        delete rightIndex[leftKey];
++        rightIndex[rightKey] = i;
+ 
+-/**
+- * Given a class, bind all of the methods that look like handlers: that
+- * begin with _on, and bind them to the class.
+- *
+- * @param {Object} context an object with methods
+- * @private
+- */
+-exports.bindHandlers = function(context) {
+-    for (var i in context) {
+-        if (typeof context[i] === 'function' && i.indexOf('_on') === 0) {
+-            context[i] = context[i].bind(context);
+-        }
++        mergedGeom[i][0].pop();
++        mergedGeom[i][0] = mergedGeom[i][0].concat(geom[0]);
++        return i;
++    }
++
++    function mergeFromLeft(leftKey, rightKey, geom) {
++        var i = leftIndex[rightKey];
++        delete leftIndex[rightKey];
++        leftIndex[leftKey] = i;
++
++        mergedGeom[i][0].shift();
++        mergedGeom[i][0] = geom[0].concat(mergedGeom[i][0]);
++        return i;
+     }
+-};
+ 
+-/**
+- * Set the 'options' property on `obj` with properties
+- * from the `options` argument. Properties in the `options`
+- * object will override existing properties.
+- *
+- * @param {Object} obj destination object
+- * @param {Object} options object of override options
+- * @returns {Object} derived options object.
+- * @private
+- */
+-exports.setOptions = function(obj, options) {
+-    if (!obj.hasOwnProperty('options')) {
+-        obj.options = obj.options ? Object.create(obj.options) : {};
+-    }
+-    for (var i in options) {
+-        obj.options[i] = options[i];
++    function getKey(text, geom, onRight) {
++        var point = onRight ? geom[0][geom[0].length - 1] : geom[0][0];
++        return text + ':' + point.x + ':' + point.y;
+     }
+-    return obj.options;
+-};
+ 
+-/**
+- * Given a list of coordinates, get their center as a coordinate.
+- * @param {Array<Coordinate>} coords
+- * @returns {Coordinate} centerpoint
+- * @private
+- */
+-exports.getCoordinatesCenter = function(coords) {
+-    var minX = Infinity;
+-    var minY = Infinity;
+-    var maxX = -Infinity;
+-    var maxY = -Infinity;
++    for (k = 0; k < features.length; k++) {
++        var geom = geometries[k],
++            text = textFeatures[k];
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        minX = Math.min(minX, coords[i].column);
+-        minY = Math.min(minY, coords[i].row);
+-        maxX = Math.max(maxX, coords[i].column);
+-        maxY = Math.max(maxY, coords[i].row);
++        if (!text) {
++            add(k);
++            continue;
++        }
++
++        var leftKey = getKey(text, geom),
++            rightKey = getKey(text, geom, true);
++
++        if ((leftKey in rightIndex) && (rightKey in leftIndex) && (rightIndex[leftKey] !== leftIndex[rightKey])) {
++            // found lines with the same text adjacent to both ends of the current line, merge all three
++            var j = mergeFromLeft(leftKey, rightKey, geom);
++            var i = mergeFromRight(leftKey, rightKey, mergedGeom[j]);
++
++            delete leftIndex[leftKey];
++            delete rightIndex[rightKey];
++
++            rightIndex[getKey(text, mergedGeom[i], true)] = i;
++            mergedGeom[j] = null;
++
++        } else if (leftKey in rightIndex) {
++            // found mergeable line adjacent to the start of the current line, merge
++            mergeFromRight(leftKey, rightKey, geom);
++
++        } else if (rightKey in leftIndex) {
++            // found mergeable line adjacent to the end of the current line, merge
++            mergeFromLeft(leftKey, rightKey, geom);
++
++        } else {
++            // no adjacent lines, add as a new item
++            add(k);
++            leftIndex[leftKey] = mergedIndex - 1;
++            rightIndex[rightKey] = mergedIndex - 1;
++        }
+     }
+ 
+-    var dx = maxX - minX;
+-    var dy = maxY - minY;
+-    var dMax = Math.max(dx, dy);
+-    return new Coordinate((minX + maxX) / 2, (minY + maxY) / 2, 0)
+-        .zoomTo(Math.floor(-Math.log(dMax) / Math.LN2));
++    return {
++        features: mergedFeatures,
++        textFeatures: mergedTexts,
++        geometries: mergedGeom
++    };
+ };
+ 
+-/**
+- * Determine if a string ends with a particular substring
+- * @param {string} string
+- * @param {string} suffix
+- * @returns {boolean}
+- * @private
+- */
+-exports.endsWith = function(string, suffix) {
+-    return string.indexOf(suffix, string.length - suffix.length) !== -1;
+-};
++},{}],326:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Determine if a string starts with a particular substring
+- * @param {string} string
+- * @param {string} prefix
+- * @returns {boolean}
+- * @private
+- */
+-exports.startsWith = function(string, prefix) {
+-    return string.indexOf(prefix) === 0;
+-};
++var Point = require('point-geometry');
+ 
+-/**
+- * Create an object by mapping all the values of an existing object while
+- * preserving their keys.
+- * @param {Object} input
+- * @param {Function} iterator
+- * @returns {Object}
+- * @private
+- */
+-exports.mapObject = function(input, iterator, context) {
+-    var output = {};
+-    for (var key in input) {
+-        output[key] = iterator.call(context || this, input[key], key, input);
+-    }
+-    return output;
++module.exports = {
++    getIconQuads: getIconQuads,
++    getGlyphQuads: getGlyphQuads
+ };
+ 
++var minScale = 0.5; // underscale by 1 zoom level
++
+ /**
+- * Create an object by filtering out values of an existing object
+- * @param {Object} input
+- * @param {Function} iterator
+- * @returns {Object}
++ * A textured quad for rendering a single icon or glyph.
++ *
++ * The zoom range the glyph can be shown is defined by minScale and maxScale.
++ *
++ * @param {Point} anchorPoint the point the symbol is anchored around
++ * @param {Point} tl The offset of the top left corner from the anchor.
++ * @param {Point} tr The offset of the top right corner from the anchor.
++ * @param {Point} bl The offset of the bottom left corner from the anchor.
++ * @param {Point} br The offset of the bottom right corner from the anchor.
++ * @param {Object} tex The texture coordinates.
++ * @param {number} angle The angle of the label at it's center, not the angle of this quad.
++ * @param {number} minScale The minimum scale, relative to the tile's intended scale, that the glyph can be shown at.
++ * @param {number} maxScale The maximum scale, relative to the tile's intended scale, that the glyph can be shown at.
++ *
++ * @class SymbolQuad
+  * @private
+  */
+-exports.filterObject = function(input, iterator, context) {
+-    var output = {};
+-    for (var key in input) {
+-        if (iterator.call(context || this, input[key], key, input)) {
+-            output[key] = input[key];
+-        }
+-    }
+-    return output;
+-};
++function SymbolQuad(anchorPoint, tl, tr, bl, br, tex, angle, minScale, maxScale) {
++    this.anchorPoint = anchorPoint;
++    this.tl = tl;
++    this.tr = tr;
++    this.bl = bl;
++    this.br = br;
++    this.tex = tex;
++    this.angle = angle;
++    this.minScale = minScale;
++    this.maxScale = maxScale;
++}
+ 
+ /**
+- * Deeply compares two object literals.
+- * @param {Object} obj1
+- * @param {Object} obj2
+- * @returns {boolean}
++ * Create the quads used for rendering an icon.
++ *
++ * @param {Anchor} anchor
++ * @param {PositionedIcon} shapedIcon
++ * @param {number} boxScale A magic number for converting glyph metric units to geometry units.
++ * @param {Array<Array<Point>>} line
++ * @param {LayoutProperties} layout
++ * @param {boolean} alongLine Whether the icon should be placed along the line.
++ * @returns {Array<SymbolQuad>}
+  * @private
+  */
+-exports.deepEqual = function deepEqual(a, b) {
+-    if (Array.isArray(a)) {
+-        if (!Array.isArray(b) || a.length !== b.length) return false;
+-        for (var i = 0; i < a.length; i++) {
+-            if (!deepEqual(a[i], b[i])) return false;
+-        }
+-        return true;
+-    }
+-    if (typeof a === 'object') {
+-        if (!(typeof b === 'object')) return false;
+-        var keys = Object.keys(a);
+-        if (keys.length !== Object.keys(b).length) return false;
+-        for (var key in a) {
+-            if (!deepEqual(a[key], b[key])) return false;
++function getIconQuads(anchor, shapedIcon, boxScale, line, layout, alongLine) {
++
++    var rect = shapedIcon.image.rect;
++
++    var border = 1;
++    var left = shapedIcon.left - border;
++    var right = left + rect.w / shapedIcon.image.pixelRatio;
++    var top = shapedIcon.top - border;
++    var bottom = top + rect.h / shapedIcon.image.pixelRatio;
++    var tl = new Point(left, top);
++    var tr = new Point(right, top);
++    var br = new Point(right, bottom);
++    var bl = new Point(left, bottom);
++
++    var angle = layout['icon-rotate'] * Math.PI / 180;
++    if (alongLine) {
++        var prev = line[anchor.segment];
++        if (anchor.y === prev.y && anchor.x === prev.x && anchor.segment + 1 < line.length) {
++            var next = line[anchor.segment + 1];
++            angle += Math.atan2(anchor.y - next.y, anchor.x - next.x) + Math.PI;
++        } else {
++            angle += Math.atan2(anchor.y - prev.y, anchor.x - prev.x);
+         }
+-        return true;
+     }
+-    return a === b;
+-};
+ 
+-/**
+- * Deeply clones two objects.
+- * @param {Object} obj1
+- * @param {Object} obj2
+- * @returns {boolean}
+- * @private
+- */
+-exports.clone = function deepEqual(input) {
+-    if (Array.isArray(input)) {
+-        return input.map(exports.clone);
+-    } else if (typeof input === 'object') {
+-        return exports.mapObject(input, exports.clone);
+-    } else {
+-        return input;
++    if (angle) {
++        var sin = Math.sin(angle),
++            cos = Math.cos(angle),
++            matrix = [cos, -sin, sin, cos];
++
++        tl = tl.matMult(matrix);
++        tr = tr.matMult(matrix);
++        bl = bl.matMult(matrix);
++        br = br.matMult(matrix);
+     }
+-};
++
++    return [new SymbolQuad(new Point(anchor.x, anchor.y), tl, tr, bl, br, shapedIcon.image.rect, 0, minScale, Infinity)];
++}
+ 
+ /**
+- * Check if two arrays have at least one common element.
+- * @param {Array} a
+- * @param {Array} b
+- * @returns {boolean}
++ * Create the quads used for rendering a text label.
++ *
++ * @param {Anchor} anchor
++ * @param {Shaping} shaping
++ * @param {number} boxScale A magic number for converting from glyph metric units to geometry units.
++ * @param {Array<Array<Point>>} line
++ * @param {LayoutProperties} layout
++ * @param {boolean} alongLine Whether the label should be placed along the line.
++ * @returns {Array<SymbolQuad>}
+  * @private
+  */
+-exports.arraysIntersect = function(a, b) {
+-    for (var l = 0; l < a.length; l++) {
+-        if (b.indexOf(a[l]) >= 0) return true;
+-    }
+-    return false;
+-};
++function getGlyphQuads(anchor, shaping, boxScale, line, layout, alongLine) {
+ 
+-},{"../geo/coordinate":255,"unitbezier":412}],350:[function(require,module,exports){
+-'use strict';
++    var textRotate = layout['text-rotate'] * Math.PI / 180;
++    var keepUpright = layout['text-keep-upright'];
+ 
+-var VectorTileFeature = require('vector-tile').VectorTileFeature;
++    var positionedGlyphs = shaping.positionedGlyphs;
++    var quads = [];
+ 
+-module.exports = Feature;
++    for (var k = 0; k < positionedGlyphs.length; k++) {
++        var positionedGlyph = positionedGlyphs[k];
++        var glyph = positionedGlyph.glyph;
++        var rect = glyph.rect;
+ 
+-function Feature(vectorTileFeature, z, x, y) {
+-    this._vectorTileFeature = vectorTileFeature;
+-    vectorTileFeature._z = z;
+-    vectorTileFeature._x = x;
+-    vectorTileFeature._y = y;
++        if (!rect) continue;
+ 
+-    this.properties = vectorTileFeature.properties;
++        var centerX = (positionedGlyph.x + glyph.advance / 2) * boxScale;
+ 
+-    if (vectorTileFeature._id) {
+-        this.id = vectorTileFeature._id;
+-    }
+-}
++        var glyphInstances;
++        var labelMinScale = minScale;
++        if (alongLine) {
++            glyphInstances = [];
++            labelMinScale = getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, true);
++            if (keepUpright) {
++                labelMinScale = Math.min(labelMinScale, getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, false));
++            }
+ 
+-Feature.prototype = {
+-    type: "Feature",
++        } else {
++            glyphInstances = [{
++                anchorPoint: new Point(anchor.x, anchor.y),
++                offset: 0,
++                angle: 0,
++                maxScale: Infinity,
++                minScale: minScale
++            }];
++        }
+ 
+-    get geometry() {
+-        if (this._geometry === undefined) {
+-            var feature = this._vectorTileFeature;
+-            var coords = projectCoords(
+-                feature.loadGeometry(),
+-                feature.extent,
+-                feature._z, feature._x, feature._y);
++        var x1 = positionedGlyph.x + glyph.left,
++            y1 = positionedGlyph.y - glyph.top,
++            x2 = x1 + rect.w,
++            y2 = y1 + rect.h,
+ 
+-            var type = VectorTileFeature.types[feature.type];
++            otl = new Point(x1, y1),
++            otr = new Point(x2, y1),
++            obl = new Point(x1, y2),
++            obr = new Point(x2, y2);
+ 
+-            if (type === 'Point' && coords.length === 1) {
+-                coords = coords[0][0];
+-            } else if (type === 'Point') {
+-                coords = coords[0];
+-                type = 'MultiPoint';
+-            } else if (type === 'LineString' && coords.length === 1) {
+-                coords = coords[0];
+-            } else if (type === 'LineString') {
+-                type = 'MultiLineString';
+-            }
++        for (var i = 0; i < glyphInstances.length; i++) {
+ 
+-            this._geometry = {
+-                type: type,
+-                coordinates: coords
+-            };
++            var instance = glyphInstances[i],
++                tl = otl,
++                tr = otr,
++                bl = obl,
++                br = obr,
++                angle = instance.angle + textRotate;
+ 
+-            this._vectorTileFeature = null;
+-        }
+-        return this._geometry;
+-    },
++            if (angle) {
++                var sin = Math.sin(angle),
++                    cos = Math.cos(angle),
++                    matrix = [cos, -sin, sin, cos];
+ 
+-    set geometry(g) {
+-        this._geometry = g;
+-    },
++                tl = tl.matMult(matrix);
++                tr = tr.matMult(matrix);
++                bl = bl.matMult(matrix);
++                br = br.matMult(matrix);
++            }
+ 
+-    toJSON: function() {
+-        var json = {};
+-        for (var i in this) {
+-            if (i === '_geometry' || i === '_vectorTileFeature') continue;
+-            json[i] = this[i];
+-        }
+-        return json;
+-    }
+-};
++            // Prevent label from extending past the end of the line
++            var glyphMinScale = Math.max(instance.minScale, labelMinScale);
++
++            var glyphAngle = (anchor.angle + textRotate + instance.offset + 2 * Math.PI) % (2 * Math.PI);
++            quads.push(new SymbolQuad(instance.anchorPoint, tl, tr, bl, br, rect, glyphAngle, glyphMinScale, instance.maxScale));
+ 
+-function projectCoords(coords, extent, z, x, y) {
+-    var size = extent * Math.pow(2, z),
+-        x0 = extent * x,
+-        y0 = extent * y;
+-    for (var i = 0; i < coords.length; i++) {
+-        var line = coords[i];
+-        for (var j = 0; j < line.length; j++) {
+-            var p = line[j];
+-            var y2 = 180 - (p.y + y0) * 360 / size;
+-            line[j] = [
+-                (p.x + x0) * 360 / size - 180,
+-                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
+-            ];
+         }
+     }
+-    return coords;
++
++    return quads;
+ }
+ 
+-},{"vector-tile":413}],351:[function(require,module,exports){
+-// (c) Dean McNamee <dean@gmail.com>, 2012.
+-//
+-// https://github.com/deanm/css-color-parser-js
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a copy
+-// of this software and associated documentation files (the "Software"), to
+-// deal in the Software without restriction, including without limitation the
+-// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+-// sell copies of the Software, and to permit persons to whom the Software is
+-// furnished to do so, subject to the following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included in
+-// all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+-// IN THE SOFTWARE.
++/**
++ * We can only render glyph quads that slide along a straight line. To draw
++ * curved lines we need an instance of a glyph for each segment it appears on.
++ * This creates all the instances of a glyph that are necessary to render a label.
++ *
++ * We need a
++ * @param {Array<Object>} glyphInstances An empty array that glyphInstances are added to.
++ * @param {Anchor} anchor
++ * @param {number} offset The glyph's offset from the center of the label.
++ * @param {Array<Point>} line
++ * @param {number} segment The index of the segment of the line on which the anchor exists.
++ * @param {boolean} forward If true get the glyphs that come later on the line, otherwise get the glyphs that come earlier.
++ *
++ * @returns {Array<Object>} glyphInstances
++ * @private
++ */
++function getSegmentGlyphs(glyphs, anchor, offset, line, segment, forward) {
++    var upsideDown = !forward;
+ 
+-// http://www.w3.org/TR/css3-color/
+-var kCSSColorTable = {
+-  "transparent": [0,0,0,0], "aliceblue": [240,248,255,1],
+-  "antiquewhite": [250,235,215,1], "aqua": [0,255,255,1],
+-  "aquamarine": [127,255,212,1], "azure": [240,255,255,1],
+-  "beige": [245,245,220,1], "bisque": [255,228,196,1],
+-  "black": [0,0,0,1], "blanchedalmond": [255,235,205,1],
+-  "blue": [0,0,255,1], "blueviolet": [138,43,226,1],
+-  "brown": [165,42,42,1], "burlywood": [222,184,135,1],
+-  "cadetblue": [95,158,160,1], "chartreuse": [127,255,0,1],
+-  "chocolate": [210,105,30,1], "coral": [255,127,80,1],
+-  "cornflowerblue": [100,149,237,1], "cornsilk": [255,248,220,1],
+-  "crimson": [220,20,60,1], "cyan": [0,255,255,1],
+-  "darkblue": [0,0,139,1], "darkcyan": [0,139,139,1],
+-  "darkgoldenrod": [184,134,11,1], "darkgray": [169,169,169,1],
+-  "darkgreen": [0,100,0,1], "darkgrey": [169,169,169,1],
+-  "darkkhaki": [189,183,107,1], "darkmagenta": [139,0,139,1],
+-  "darkolivegreen": [85,107,47,1], "darkorange": [255,140,0,1],
+-  "darkorchid": [153,50,204,1], "darkred": [139,0,0,1],
+-  "darksalmon": [233,150,122,1], "darkseagreen": [143,188,143,1],
+-  "darkslateblue": [72,61,139,1], "darkslategray": [47,79,79,1],
+-  "darkslategrey": [47,79,79,1], "darkturquoise": [0,206,209,1],
+-  "darkviolet": [148,0,211,1], "deeppink": [255,20,147,1],
+-  "deepskyblue": [0,191,255,1], "dimgray": [105,105,105,1],
+-  "dimgrey": [105,105,105,1], "dodgerblue": [30,144,255,1],
+-  "firebrick": [178,34,34,1], "floralwhite": [255,250,240,1],
+-  "forestgreen": [34,139,34,1], "fuchsia": [255,0,255,1],
+-  "gainsboro": [220,220,220,1], "ghostwhite": [248,248,255,1],
+-  "gold": [255,215,0,1], "goldenrod": [218,165,32,1],
+-  "gray": [128,128,128,1], "green": [0,128,0,1],
+-  "greenyellow": [173,255,47,1], "grey": [128,128,128,1],
+-  "honeydew": [240,255,240,1], "hotpink": [255,105,180,1],
+-  "indianred": [205,92,92,1], "indigo": [75,0,130,1],
+-  "ivory": [255,255,240,1], "khaki": [240,230,140,1],
+-  "lavender": [230,230,250,1], "lavenderblush": [255,240,245,1],
+-  "lawngreen": [124,252,0,1], "lemonchiffon": [255,250,205,1],
+-  "lightblue": [173,216,230,1], "lightcoral": [240,128,128,1],
+-  "lightcyan": [224,255,255,1], "lightgoldenrodyellow": [250,250,210,1],
+-  "lightgray": [211,211,211,1], "lightgreen": [144,238,144,1],
+-  "lightgrey": [211,211,211,1], "lightpink": [255,182,193,1],
+-  "lightsalmon": [255,160,122,1], "lightseagreen": [32,178,170,1],
+-  "lightskyblue": [135,206,250,1], "lightslategray": [119,136,153,1],
+-  "lightslategrey": [119,136,153,1], "lightsteelblue": [176,196,222,1],
+-  "lightyellow": [255,255,224,1], "lime": [0,255,0,1],
+-  "limegreen": [50,205,50,1], "linen": [250,240,230,1],
+-  "magenta": [255,0,255,1], "maroon": [128,0,0,1],
+-  "mediumaquamarine": [102,205,170,1], "mediumblue": [0,0,205,1],
+-  "mediumorchid": [186,85,211,1], "mediumpurple": [147,112,219,1],
+-  "mediumseagreen": [60,179,113,1], "mediumslateblue": [123,104,238,1],
+-  "mediumspringgreen": [0,250,154,1], "mediumturquoise": [72,209,204,1],
+-  "mediumvioletred": [199,21,133,1], "midnightblue": [25,25,112,1],
+-  "mintcream": [245,255,250,1], "mistyrose": [255,228,225,1],
+-  "moccasin": [255,228,181,1], "navajowhite": [255,222,173,1],
+-  "navy": [0,0,128,1], "oldlace": [253,245,230,1],
+-  "olive": [128,128,0,1], "olivedrab": [107,142,35,1],
+-  "orange": [255,165,0,1], "orangered": [255,69,0,1],
+-  "orchid": [218,112,214,1], "palegoldenrod": [238,232,170,1],
+-  "palegreen": [152,251,152,1], "paleturquoise": [175,238,238,1],
+-  "palevioletred": [219,112,147,1], "papayawhip": [255,239,213,1],
+-  "peachpuff": [255,218,185,1], "peru": [205,133,63,1],
+-  "pink": [255,192,203,1], "plum": [221,160,221,1],
+-  "powderblue": [176,224,230,1], "purple": [128,0,128,1],
+-  "red": [255,0,0,1], "rosybrown": [188,143,143,1],
+-  "royalblue": [65,105,225,1], "saddlebrown": [139,69,19,1],
+-  "salmon": [250,128,114,1], "sandybrown": [244,164,96,1],
+-  "seagreen": [46,139,87,1], "seashell": [255,245,238,1],
+-  "sienna": [160,82,45,1], "silver": [192,192,192,1],
+-  "skyblue": [135,206,235,1], "slateblue": [106,90,205,1],
+-  "slategray": [112,128,144,1], "slategrey": [112,128,144,1],
+-  "snow": [255,250,250,1], "springgreen": [0,255,127,1],
+-  "steelblue": [70,130,180,1], "tan": [210,180,140,1],
+-  "teal": [0,128,128,1], "thistle": [216,191,216,1],
+-  "tomato": [255,99,71,1], "turquoise": [64,224,208,1],
+-  "violet": [238,130,238,1], "wheat": [245,222,179,1],
+-  "white": [255,255,255,1], "whitesmoke": [245,245,245,1],
+-  "yellow": [255,255,0,1], "yellowgreen": [154,205,50,1]}
++    if (offset < 0) forward = !forward;
+ 
+-function clamp_css_byte(i) {  // Clamp to integer 0 .. 255.
+-  i = Math.round(i);  // Seems to be what Chrome does (vs truncation).
+-  return i < 0 ? 0 : i > 255 ? 255 : i;
+-}
++    if (forward) segment++;
++
++    var newAnchorPoint = new Point(anchor.x, anchor.y);
++    var end = line[segment];
++    var prevScale = Infinity;
+ 
+-function clamp_css_float(f) {  // Clamp to float 0.0 .. 1.0.
+-  return f < 0 ? 0 : f > 1 ? 1 : f;
+-}
++    offset = Math.abs(offset);
+ 
+-function parse_css_int(str) {  // int or percentage.
+-  if (str[str.length - 1] === '%')
+-    return clamp_css_byte(parseFloat(str) / 100 * 255);
+-  return clamp_css_byte(parseInt(str));
+-}
++    var placementScale = minScale;
+ 
+-function parse_css_float(str) {  // float or percentage.
+-  if (str[str.length - 1] === '%')
+-    return clamp_css_float(parseFloat(str) / 100);
+-  return clamp_css_float(parseFloat(str));
+-}
++    while (true) {
++        var distance = newAnchorPoint.dist(end);
++        var scale = offset / distance;
+ 
+-function css_hue_to_rgb(m1, m2, h) {
+-  if (h < 0) h += 1;
+-  else if (h > 1) h -= 1;
++        // Get the angle of the line segment
++        var angle = Math.atan2(end.y - newAnchorPoint.y, end.x - newAnchorPoint.x);
++        if (!forward) angle += Math.PI;
++        if (upsideDown) angle += Math.PI;
+ 
+-  if (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
+-  if (h * 2 < 1) return m2;
+-  if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6;
+-  return m1;
+-}
++        glyphs.push({
++            anchorPoint: newAnchorPoint,
++            offset: upsideDown ? Math.PI : 0,
++            minScale: scale,
++            maxScale: prevScale,
++            angle: (angle + 2 * Math.PI) % (2 * Math.PI)
++        });
+ 
+-function parseCSSColor(css_str) {
+-  // Remove all whitespace, not compliant, but should just be more accepting.
+-  var str = css_str.replace(/ /g, '').toLowerCase();
++        if (scale <= placementScale) break;
+ 
+-  // Color keywords (and transparent) lookup.
+-  if (str in kCSSColorTable) return kCSSColorTable[str].slice();  // dup.
++        newAnchorPoint = end;
+ 
+-  // #abc and #abc123 syntax.
+-  if (str[0] === '#') {
+-    if (str.length === 4) {
+-      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
+-      if (!(iv >= 0 && iv <= 0xfff)) return null;  // Covers NaN.
+-      return [((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8),
+-              (iv & 0xf0) | ((iv & 0xf0) >> 4),
+-              (iv & 0xf) | ((iv & 0xf) << 4),
+-              1];
+-    } else if (str.length === 7) {
+-      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
+-      if (!(iv >= 0 && iv <= 0xffffff)) return null;  // Covers NaN.
+-      return [(iv & 0xff0000) >> 16,
+-              (iv & 0xff00) >> 8,
+-              iv & 0xff,
+-              1];
+-    }
++        // skip duplicate nodes
++        while (newAnchorPoint.equals(end)) {
++            segment += forward ? 1 : -1;
++            end = line[segment];
++            if (!end) {
++                return scale;
++            }
++        }
+ 
+-    return null;
+-  }
++        var unit = end.sub(newAnchorPoint)._unit();
++        newAnchorPoint = newAnchorPoint.sub(unit._mult(distance));
+ 
+-  var op = str.indexOf('('), ep = str.indexOf(')');
+-  if (op !== -1 && ep + 1 === str.length) {
+-    var fname = str.substr(0, op);
+-    var params = str.substr(op+1, ep-(op+1)).split(',');
+-    var alpha = 1;  // To allow case fallthrough.
+-    switch (fname) {
+-      case 'rgba':
+-        if (params.length !== 4) return null;
+-        alpha = parse_css_float(params.pop());
+-        // Fall through.
+-      case 'rgb':
+-        if (params.length !== 3) return null;
+-        return [parse_css_int(params[0]),
+-                parse_css_int(params[1]),
+-                parse_css_int(params[2]),
+-                alpha];
+-      case 'hsla':
+-        if (params.length !== 4) return null;
+-        alpha = parse_css_float(params.pop());
+-        // Fall through.
+-      case 'hsl':
+-        if (params.length !== 3) return null;
+-        var h = (((parseFloat(params[0]) % 360) + 360) % 360) / 360;  // 0 .. 1
+-        // NOTE(deanm): According to the CSS spec s/l should only be
+-        // percentages, but we don't bother and let float or percentage.
+-        var s = parse_css_float(params[1]);
+-        var l = parse_css_float(params[2]);
+-        var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
+-        var m1 = l * 2 - m2;
+-        return [clamp_css_byte(css_hue_to_rgb(m1, m2, h+1/3) * 255),
+-                clamp_css_byte(css_hue_to_rgb(m1, m2, h) * 255),
+-                clamp_css_byte(css_hue_to_rgb(m1, m2, h-1/3) * 255),
+-                alpha];
+-      default:
+-        return null;
++        prevScale = scale;
+     }
+-  }
+ 
+-  return null;
++    return placementScale;
+ }
+ 
+-try { exports.parseCSSColor = parseCSSColor } catch(e) { }
+-
+-},{}],352:[function(require,module,exports){
++},{"point-geometry":400}],327:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = createFilter;
++var resolveTokens = require('../util/token');
+ 
+-var types = ['Unknown', 'Point', 'LineString', 'Polygon'];
++module.exports = resolveText;
+ 
+ /**
+- * Given a filter expressed as nested arrays, return a new function
+- * that evaluates whether a given feature (with a .properties or .tags property)
+- * passes its test.
+- *
+- * @param {Array} filter mapbox gl filter
+- * @returns {Function} filter-evaluating function
++ * For an array of features determine what glyphs need to be loaded
++ * and apply any text preprocessing. The remaining users of text should
++ * use the `textFeatures` key returned by this function rather than accessing
++ * feature text directly.
++ * @private
+  */
+-function createFilter(filter) {
+-    return new Function('f', 'var p = (f && f.properties || {}); return ' + compile(filter));
+-}
++function resolveText(features, layoutProperties, codepoints) {
++    var textFeatures = [];
+ 
+-function compile(filter) {
+-    if (!filter) return 'true';
+-    var op = filter[0];
+-    if (filter.length <= 1) return op === 'any' ? 'false' : 'true';
+-    var str =
+-        op === '==' ? compileComparisonOp(filter[1], filter[2], '===', false) :
+-        op === '!=' ? compileComparisonOp(filter[1], filter[2], '!==', false) :
+-        op === '<' ||
+-        op === '>' ||
+-        op === '<=' ||
+-        op === '>=' ? compileComparisonOp(filter[1], filter[2], op, true) :
+-        op === 'any' ? compileLogicalOp(filter.slice(1), '||') :
+-        op === 'all' ? compileLogicalOp(filter.slice(1), '&&') :
+-        op === 'none' ? compileNegation(compileLogicalOp(filter.slice(1), '||')) :
+-        op === 'in' ? compileInOp(filter[1], filter.slice(2)) :
+-        op === '!in' ? compileNegation(compileInOp(filter[1], filter.slice(2))) :
+-        op === 'has' ? compileHasOp(filter[1]) :
+-        op === '!has' ? compileNegation(compileHasOp([filter[1]])) :
+-        'true';
+-    return '(' + str + ')';
+-}
++    for (var i = 0, fl = features.length; i < fl; i++) {
++        var text = resolveTokens(features[i].properties, layoutProperties['text-field']);
++        if (!text) {
++            textFeatures[i] = null;
++            continue;
++        }
++        text = text.toString();
+ 
+-function compilePropertyReference(property) {
+-    return property === '$type' ? 'f.type' : 'p[' + JSON.stringify(property) + ']';
+-}
++        var transform = layoutProperties['text-transform'];
++        if (transform === 'uppercase') {
++            text = text.toLocaleUpperCase();
++        } else if (transform === 'lowercase') {
++            text = text.toLocaleLowerCase();
++        }
+ 
+-function compileComparisonOp(property, value, op, checkType) {
+-    var left = compilePropertyReference(property);
+-    var right = property === '$type' ? types.indexOf(value) : JSON.stringify(value);
+-    return (checkType ? 'typeof ' + left + '=== typeof ' + right + '&&' : '') + left + op + right;
+-}
++        for (var j = 0; j < text.length; j++) {
++            codepoints[text.charCodeAt(j)] = true;
++        }
+ 
+-function compileLogicalOp(expressions, op) {
+-    return expressions.map(compile).join(op);
++        // Track indexes of features with text.
++        textFeatures[i] = text;
++    }
++
++    return textFeatures;
+ }
+ 
+-function compileInOp(property, values) {
+-    if (property === '$type') values = values.map(function(value) { return types.indexOf(value); });
+-    var left = JSON.stringify(values.sort(compare));
+-    var right = compilePropertyReference(property);
++},{"../util/token":361}],328:[function(require,module,exports){
++'use strict';
+ 
+-    if (values.length <= 200) return left + '.indexOf(' + right + ') !== -1';
++module.exports = {
++    shapeText: shapeText,
++    shapeIcon: shapeIcon
++};
+ 
+-    return 'function(v, a, i, j) {' +
+-        'while (i <= j) { var m = (i + j) >> 1;' +
+-        '    if (a[m] === v) return true; if (a[m] > v) j = m - 1; else i = m + 1;' +
+-        '}' +
+-    'return false; }(' + right + ', ' + left + ',0,' + (values.length - 1) + ')';
+-}
+ 
+-function compileHasOp(property) {
+-    return JSON.stringify(property) + ' in p';
++// The position of a glyph relative to the text's anchor point.
++function PositionedGlyph(codePoint, x, y, glyph) {
++    this.codePoint = codePoint;
++    this.x = x;
++    this.y = y;
++    this.glyph = glyph;
+ }
+ 
+-function compileNegation(expression) {
+-    return '!(' + expression + ')';
++// A collection of positioned glyphs and some metadata
++function Shaping(positionedGlyphs, text, top, bottom, left, right) {
++    this.positionedGlyphs = positionedGlyphs;
++    this.text = text;
++    this.top = top;
++    this.bottom = bottom;
++    this.left = left;
++    this.right = right;
+ }
+ 
+-// Comparison function to sort numbers and strings
+-function compare(a, b) {
+-    return a < b ? -1 : a > b ? 1 : 0;
+-}
++function shapeText(text, glyphs, maxWidth, lineHeight, horizontalAlign, verticalAlign, justify, spacing, translate) {
+ 
+-},{}],353:[function(require,module,exports){
+-var geojsonArea = require('geojson-area');
++    var positionedGlyphs = [];
++    var shaping = new Shaping(positionedGlyphs, text, translate[1], translate[1], translate[0], translate[0]);
+ 
+-module.exports = rewind;
++    // the y offset *should* be part of the font metadata
++    var yOffset = -17;
+ 
+-function rewind(gj, outer) {
+-    switch ((gj && gj.type) || null) {
+-        case 'FeatureCollection':
+-            gj.features = gj.features.map(curryOuter(rewind, outer));
+-            return gj;
+-        case 'Feature':
+-            gj.geometry = rewind(gj.geometry, outer);
+-            return gj;
+-        case 'Polygon':
+-        case 'MultiPolygon':
+-            return correct(gj, outer);
+-        default:
+-            return gj;
+-    }
+-}
++    var x = 0;
++    var y = yOffset;
+ 
+-function curryOuter(a, b) {
+-    return function(_) { return a(_, b); };
+-}
++    for (var i = 0; i < text.length; i++) {
++        var codePoint = text.charCodeAt(i);
++        var glyph = glyphs[codePoint];
+ 
+-function correct(_, outer) {
+-    if (_.type === 'Polygon') {
+-        _.coordinates = correctRings(_.coordinates, outer);
+-    } else if (_.type === 'MultiPolygon') {
+-        _.coordinates = _.coordinates.map(curryOuter(correctRings, outer));
+-    }
+-    return _;
+-}
++        if (!glyph) continue;
+ 
+-function correctRings(_, outer) {
+-    outer = !!outer;
+-    _[0] = wind(_[0], !outer);
+-    for (var i = 1; i < _.length; i++) {
+-        _[i] = wind(_[i], outer);
++        positionedGlyphs.push(new PositionedGlyph(codePoint, x, y, glyph));
++        x += glyph.advance + spacing;
+     }
+-    return _;
+-}
+ 
+-function wind(_, dir) {
+-    return cw(_) === dir ? _ : _.reverse();
+-}
++    if (!positionedGlyphs.length) return false;
+ 
+-function cw(_) {
+-    return geojsonArea.ring(_) >= 0;
++    linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate);
++
++    return shaping;
+ }
+ 
+-},{"geojson-area":354}],354:[function(require,module,exports){
+-var wgs84 = require('wgs84');
++var invisible = {
++    0x20:   true, // space
++    0x200b: true  // zero-width space
++};
+ 
+-module.exports.geometry = geometry;
+-module.exports.ring = ringArea;
++var breakable = {
++    0x20:   true, // space
++    0x26:   true, // ampersand
++    0x2b:   true, // plus sign
++    0x2d:   true, // hyphen-minus
++    0x2f:   true, // solidus
++    0xad:   true, // soft hyphen
++    0xb7:   true, // middle dot
++    0x200b: true, // zero-width space
++    0x2010: true, // hyphen
++    0x2013: true  // en dash
++};
+ 
+-function geometry(_) {
+-    if (_.type === 'Polygon') return polygonArea(_.coordinates);
+-    else if (_.type === 'MultiPolygon') {
+-        var area = 0;
+-        for (var i = 0; i < _.coordinates.length; i++) {
+-            area += polygonArea(_.coordinates[i]);
++function linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate) {
++    var lastSafeBreak = null;
++
++    var lengthBeforeCurrentLine = 0;
++    var lineStartIndex = 0;
++    var line = 0;
++
++    var maxLineLength = 0;
++
++    var positionedGlyphs = shaping.positionedGlyphs;
++
++    if (maxWidth) {
++        for (var i = 0; i < positionedGlyphs.length; i++) {
++            var positionedGlyph = positionedGlyphs[i];
++
++            positionedGlyph.x -= lengthBeforeCurrentLine;
++            positionedGlyph.y += lineHeight * line;
++
++            if (positionedGlyph.x > maxWidth && lastSafeBreak !== null) {
++
++                var lineLength = positionedGlyphs[lastSafeBreak + 1].x;
++                maxLineLength = Math.max(lineLength, maxLineLength);
++
++                for (var k = lastSafeBreak + 1; k <= i; k++) {
++                    positionedGlyphs[k].y += lineHeight;
++                    positionedGlyphs[k].x -= lineLength;
++                }
++
++                if (justify) {
++                    // Collapse invisible characters.
++                    var lineEnd = lastSafeBreak;
++                    if (invisible[positionedGlyphs[lastSafeBreak].codePoint]) {
++                        lineEnd--;
++                    }
++
++                    justifyLine(positionedGlyphs, glyphs, lineStartIndex, lineEnd, justify);
++                }
++
++                lineStartIndex = lastSafeBreak + 1;
++                lastSafeBreak = null;
++                lengthBeforeCurrentLine += lineLength;
++                line++;
++            }
++
++            if (breakable[positionedGlyph.codePoint]) {
++                lastSafeBreak = i;
++            }
+         }
+-        return area;
+-    } else {
+-        return null;
+     }
++
++    var lastPositionedGlyph = positionedGlyphs[positionedGlyphs.length - 1];
++    var lastLineLength = lastPositionedGlyph.x + glyphs[lastPositionedGlyph.codePoint].advance;
++    maxLineLength = Math.max(maxLineLength, lastLineLength);
++
++    var height = (line + 1) * lineHeight;
++
++    justifyLine(positionedGlyphs, glyphs, lineStartIndex, positionedGlyphs.length - 1, justify);
++    align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate);
++
++    // Calculate the bounding box
++    shaping.top += -verticalAlign * height;
++    shaping.bottom = shaping.top + height;
++    shaping.left += -horizontalAlign * maxLineLength;
++    shaping.right = shaping.left + maxLineLength;
+ }
+ 
+-function polygonArea(coords) {
+-    var area = 0;
+-    if (coords && coords.length > 0) {
+-        area += Math.abs(ringArea(coords[0]));
+-        for (var i = 1; i < coords.length; i++) {
+-            area -= Math.abs(ringArea(coords[i]));
+-        }
++function justifyLine(positionedGlyphs, glyphs, start, end, justify) {
++    var lastAdvance = glyphs[positionedGlyphs[end].codePoint].advance;
++    var lineIndent = (positionedGlyphs[end].x + lastAdvance) * justify;
++
++    for (var j = start; j <= end; j++) {
++        positionedGlyphs[j].x -= lineIndent;
+     }
+-    return area;
++
+ }
+ 
+-/**
+- * Calculate the approximate area of the polygon were it projected onto
+- *     the earth.  Note that this area will be positive if ring is oriented
+- *     clockwise, otherwise it will be negative.
+- *
+- * Reference:
+- * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
+- *     Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
+- *     Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
+- *
+- * Returns:
+- * {float} The approximate signed geodesic area of the polygon in square
+- *     meters.
+- */
++function align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate) {
++    var shiftX = (justify - horizontalAlign) * maxLineLength + translate[0];
++    var shiftY = (-verticalAlign * (line + 1) + 0.5) * lineHeight + translate[1];
+ 
+-function ringArea(coords) {
+-    var area = 0;
++    for (var j = 0; j < positionedGlyphs.length; j++) {
++        positionedGlyphs[j].x += shiftX;
++        positionedGlyphs[j].y += shiftY;
++    }
++}
+ 
+-    if (coords.length > 2) {
+-        var p1, p2;
+-        for (var i = 0; i < coords.length - 1; i++) {
+-            p1 = coords[i];
+-            p2 = coords[i + 1];
+-            area += rad(p2[0] - p1[0]) * (2 + Math.sin(rad(p1[1])) + Math.sin(rad(p2[1])));
+-        }
+ 
+-        area = area * wgs84.RADIUS * wgs84.RADIUS / 2;
+-    }
++function shapeIcon(image, layout) {
++    if (!image || !image.rect) return null;
+ 
+-    return area;
+-}
++    var dx = layout['icon-offset'][0];
++    var dy = layout['icon-offset'][1];
++    var x1 = dx - image.width / 2;
++    var x2 = x1 + image.width;
++    var y1 = dy - image.height / 2;
++    var y2 = y1 + image.height;
+ 
+-function rad(_) {
+-    return _ * Math.PI / 180;
++    return new PositionedIcon(image, y1, y2, x1, x2);
+ }
+ 
+-},{"wgs84":355}],355:[function(require,module,exports){
+-module.exports.RADIUS = 6378137;
+-module.exports.FLATTENING = 1/298.257223563;
+-module.exports.POLAR_RADIUS = 6356752.3142;
++function PositionedIcon(image, top, bottom, left, right) {
++    this.image = image;
++    this.top = top;
++    this.bottom = bottom;
++    this.left = left;
++    this.right = right;
++}
+ 
+-},{}],356:[function(require,module,exports){
++},{}],329:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = clip;
++var ShelfPack = require('shelf-pack');
++var browser = require('../util/browser');
+ 
+-/* clip features between two axis-parallel lines:
+- *     |        |
+- *  ___|___     |     /
+- * /   |   \____|____/
+- *     |        |
+- */
++module.exports = SpriteAtlas;
++function SpriteAtlas(width, height) {
++    this.width = width;
++    this.height = height;
+ 
+-function clip(features, scale, k1, k2, axis, intersect, minAll, maxAll) {
++    this.bin = new ShelfPack(width, height);
++    this.images = {};
++    this.data = false;
++    this.texture = 0; // WebGL ID
++    this.filter = 0; // WebGL ID
++    this.pixelRatio = 1;
++    this.dirty = true;
++}
+ 
+-    k1 /= scale;
+-    k2 /= scale;
++function copyBitmap(src, srcStride, srcX, srcY, dst, dstStride, dstX, dstY, width, height, wrap) {
++    var srcI = srcY * srcStride + srcX;
++    var dstI = dstY * dstStride + dstX;
++    var x, y;
+ 
+-    if (minAll >= k1 && maxAll <= k2) return features; // trivial accept
+-    else if (minAll > k2 || maxAll < k1) return null; // trivial reject
++    if (wrap) {
++        // add 1 pixel wrapped padding on each side of the image
++        dstI -= dstStride;
++        for (y = -1; y <= height; y++, srcI = ((y + height) % height + srcY) * srcStride + srcX, dstI += dstStride) {
++            for (x = -1; x <= width; x++) {
++                dst[dstI + x] = src[srcI + ((x + width) % width)];
++            }
++        }
+ 
+-    var clipped = [];
++    } else {
++        for (y = 0; y < height; y++, srcI += srcStride, dstI += dstStride) {
++            for (x = 0; x < width; x++) {
++                dst[dstI + x] = src[srcI + x];
++            }
++        }
++    }
++}
+ 
+-    for (var i = 0; i < features.length; i++) {
++SpriteAtlas.prototype.allocateImage = function(pixelWidth, pixelHeight) {
+ 
+-        var feature = features[i],
+-            geometry = feature.geometry,
+-            type = feature.type,
+-            min, max;
++    pixelWidth = pixelWidth / this.pixelRatio;
++    pixelHeight = pixelHeight / this.pixelRatio;
+ 
+-        min = feature.min[axis];
+-        max = feature.max[axis];
++    // Increase to next number divisible by 4, but at least 1.
++    // This is so we can scale down the texture coordinates and pack them
++    // into 2 bytes rather than 4 bytes.
++    // Pad icons to prevent them from polluting neighbours during linear interpolation
++    var padding = 2;
++    var packWidth = pixelWidth + padding + (4 - (pixelWidth + padding) % 4);
++    var packHeight = pixelHeight + padding + (4 - (pixelHeight + padding) % 4);// + 4;
++
++    var rect = this.bin.packOne(packWidth, packHeight);
++    if (!rect) {
++        console.warn('SpriteAtlas out of space.');
++        return null;
++    }
+ 
+-        if (min >= k1 && max <= k2) { // trivial accept
+-            clipped.push(feature);
+-            continue;
+-        } else if (min > k2 || max < k1) continue; // trivial reject
++    return rect;
++};
+ 
+-        var slices = type === 1 ?
+-                clipPoints(geometry, k1, k2, axis) :
+-                clipGeometry(geometry, k1, k2, axis, intersect, type === 3);
++SpriteAtlas.prototype.getImage = function(name, wrap) {
++    if (this.images[name]) {
++        return this.images[name];
++    }
+ 
+-        if (slices.length) {
+-            // if a feature got clipped, it will likely get clipped on the next zoom level as well,
+-            // so there's no need to recalculate bboxes
+-            clipped.push({
+-                geometry: slices,
+-                type: type,
+-                tags: features[i].tags || null,
+-                min: feature.min,
+-                max: feature.max
+-            });
+-        }
++    if (!this.sprite) {
++        return null;
+     }
+ 
+-    return clipped.length ? clipped : null;
+-}
++    var pos = this.sprite.getSpritePosition(name);
++    if (!pos.width || !pos.height) {
++        return null;
++    }
+ 
+-function clipPoints(geometry, k1, k2, axis) {
+-    var slice = [];
++    var rect = this.allocateImage(pos.width, pos.height);
++    if (!rect) {
++        return null;
++    }
+ 
+-    for (var i = 0; i < geometry.length; i++) {
+-        var a = geometry[i],
+-            ak = a[axis];
++    var image = new AtlasImage(rect, pos.width / pos.pixelRatio, pos.height / pos.pixelRatio, pos.sdf, pos.pixelRatio / this.pixelRatio);
++    this.images[name] = image;
+ 
+-        if (ak >= k1 && ak <= k2) slice.push(a);
+-    }
+-    return slice;
+-}
++    this.copy(rect, pos, wrap);
+ 
+-function clipGeometry(geometry, k1, k2, axis, intersect, closed) {
++    return image;
++};
+ 
+-    var slices = [];
+ 
+-    for (var i = 0; i < geometry.length; i++) {
++// Return position of a repeating fill pattern.
++SpriteAtlas.prototype.getPosition = function(name, repeating) {
++    var image = this.getImage(name, repeating);
++    var rect = image && image.rect;
+ 
+-        var ak = 0,
+-            bk = 0,
+-            b = null,
+-            points = geometry[i],
+-            area = points.area,
+-            dist = points.dist,
+-            len = points.length,
+-            a, j, last;
++    if (!rect) {
++        return null;
++    }
+ 
+-        var slice = [];
++    var width = image.width * image.pixelRatio;
++    var height = image.height * image.pixelRatio;
++    var padding = 1;
+ 
+-        for (j = 0; j < len - 1; j++) {
+-            a = b || points[j];
+-            b = points[j + 1];
+-            ak = bk || a[axis];
+-            bk = b[axis];
++    return {
++        size: [image.width, image.height],
++        tl: [(rect.x + padding)         / this.width, (rect.y + padding)          / this.height],
++        br: [(rect.x + padding + width) / this.width, (rect.y + padding + height) / this.height]
++    };
++};
+ 
+-            if (ak < k1) {
+ 
+-                if ((bk > k2)) { // ---|-----|-->
+-                    slice.push(intersect(a, b, k1), intersect(a, b, k2));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
++SpriteAtlas.prototype.allocate = function() {
++    if (!this.data) {
++        var w = Math.floor(this.width * this.pixelRatio);
++        var h = Math.floor(this.height * this.pixelRatio);
++        this.data = new Uint32Array(w * h);
++        for (var i = 0; i < this.data.length; i++) {
++            this.data[i] = 0;
++        }
++    }
++};
+ 
+-                } else if (bk >= k1) slice.push(intersect(a, b, k1)); // ---|-->  |
+ 
+-            } else if (ak > k2) {
++SpriteAtlas.prototype.copy = function(dst, src, wrap) {
++    if (!this.sprite.img.data) return;
++    var srcImg = new Uint32Array(this.sprite.img.data.buffer);
+ 
+-                if ((bk < k1)) { // <--|-----|---
+-                    slice.push(intersect(a, b, k2), intersect(a, b, k1));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
++    this.allocate();
++    var dstImg = this.data;
+ 
+-                } else if (bk <= k2) slice.push(intersect(a, b, k2)); // |  <--|---
++    var padding = 1;
+ 
+-            } else {
++    copyBitmap(
++        /* source buffer */  srcImg,
++        /* source stride */  this.sprite.img.width,
++        /* source x */       src.x,
++        /* source y */       src.y,
++        /* dest buffer */    dstImg,
++        /* dest stride */    this.width * this.pixelRatio,
++        /* dest x */         (dst.x + padding) * this.pixelRatio,
++        /* dest y */         (dst.y + padding) * this.pixelRatio,
++        /* icon dimension */ src.width,
++        /* icon dimension */ src.height,
++        /* wrap */ wrap
++    );
+ 
+-                slice.push(a);
++    this.dirty = true;
++};
+ 
+-                if (bk < k1) { // <--|---  |
+-                    slice.push(intersect(a, b, k1));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
++SpriteAtlas.prototype.setSprite = function(sprite) {
++    if (sprite) {
++        this.pixelRatio = browser.devicePixelRatio > 1 ? 2 : 1;
+ 
+-                } else if (bk > k2) { // |  ---|-->
+-                    slice.push(intersect(a, b, k2));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
+-                }
+-                // | --> |
+-            }
++        if (this.canvas) {
++            this.canvas.width = this.width * this.pixelRatio;
++            this.canvas.height = this.height * this.pixelRatio;
+         }
++    }
++    this.sprite = sprite;
++};
+ 
+-        // add the last point
+-        a = points[len - 1];
+-        ak = a[axis];
+-        if (ak >= k1 && ak <= k2) slice.push(a);
++SpriteAtlas.prototype.addIcons = function(icons, callback) {
++    for (var i = 0; i < icons.length; i++) {
++        this.getImage(icons[i]);
++    }
+ 
+-        // close the polygon if its endpoints are not the same after clipping
++    callback(null, this.images);
++};
+ 
+-        last = slice[slice.length - 1];
+-        if (closed && last && (slice[0][0] !== last[0] || slice[0][1] !== last[1])) slice.push(slice[0]);
++SpriteAtlas.prototype.bind = function(gl, linear) {
++    var first = false;
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++        first = true;
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++    }
+ 
+-        // add the final slice
+-        newSlice(slices, slice, area, dist);
++    var filterVal = linear ? gl.LINEAR : gl.NEAREST;
++    if (filterVal !== this.filter) {
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, filterVal);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, filterVal);
++        this.filter = filterVal;
+     }
+ 
+-    return slices;
+-}
++    if (this.dirty) {
++        this.allocate();
+ 
+-function newSlice(slices, slice, area, dist) {
+-    if (slice.length) {
+-        // we don't recalculate the area/length of the unclipped geometry because the case where it goes
+-        // below the visibility threshold as a result of clipping is rare, so we avoid doing unnecessary work
+-        slice.area = area;
+-        slice.dist = dist;
++        if (first) {
++            gl.texImage2D(
++                gl.TEXTURE_2D, // enum target
++                0, // ind level
++                gl.RGBA, // ind internalformat
++                this.width * this.pixelRatio, // GLsizei width
++                this.height * this.pixelRatio, // GLsizei height
++                0, // ind border
++                gl.RGBA, // enum format
++                gl.UNSIGNED_BYTE, // enum type
++                new Uint8Array(this.data.buffer) // Object data
++            );
++        } else {
++            gl.texSubImage2D(
++                gl.TEXTURE_2D, // enum target
++                0, // int level
++                0, // int xoffset
++                0, // int yoffset
++                this.width * this.pixelRatio, // long width
++                this.height * this.pixelRatio, // long height
++                gl.RGBA, // enum format
++                gl.UNSIGNED_BYTE, // enum type
++                new Uint8Array(this.data.buffer) // Object pixels
++            );
++        }
+ 
+-        slices.push(slice);
++        this.dirty = false;
+     }
+-    return [];
++};
++
++function AtlasImage(rect, width, height, sdf, pixelRatio) {
++    this.rect = rect;
++    this.width = width;
++    this.height = height;
++    this.sdf = sdf;
++    this.pixelRatio = pixelRatio;
+ }
+ 
+-},{}],357:[function(require,module,exports){
++},{"../util/browser":348,"shelf-pack":424}],330:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = convert;
+-
+-var simplify = require('./simplify');
+-
+-// converts GeoJSON feature into an intermediate projected JSON vector format with simplification data
+-
+-function convert(data, tolerance) {
+-    var features = [];
++var util = require('../util/util');
++var interpolate = require('../util/interpolate');
++var browser = require('../util/browser');
++var LngLat = require('../geo/lng_lat');
++var LngLatBounds = require('../geo/lng_lat_bounds');
++var Point = require('point-geometry');
+ 
+-    if (data.type === 'FeatureCollection') {
+-        for (var i = 0; i < data.features.length; i++) {
+-            convertFeature(features, data.features[i], tolerance);
+-        }
+-    } else if (data.type === 'Feature') {
+-        convertFeature(features, data, tolerance);
++/**
++ * Options common to Map#jumpTo, Map#easeTo, and Map#flyTo, controlling the destination
++ * location, zoom level, bearing and pitch. All properties are options; unspecified
++ * options will default to the current value for that property.
++ *
++ * @typedef {Object} CameraOptions
++ * @property {LngLat} center Map center
++ * @property {number} zoom Map zoom level
++ * @property {number} bearing Map rotation bearing in degrees counter-clockwise from north
++ * @property {number} pitch Map angle in degrees at which the camera is looking at the ground
++ * @property {LngLat} around If zooming, the zoom center (defaults to map center)
++ */
+ 
+-    } else {
+-        // single geometry or a geometry collection
+-        convertFeature(features, {geometry: data}, tolerance);
+-    }
+-    return features;
+-}
++/**
++ * Options common to map movement methods that involve animation, such as Map#panBy and
++ * Map#easeTo, controlling the duration of the animation and easing function. All properties
++ * are optional.
++ *
++ * @typedef {Object} AnimationOptions
++ * @property {number} duration Number in milliseconds
++ * @property {Function} easing
++ * @property {Array} offset point, origin of movement relative to map center
++ * @property {boolean} animate When set to false, no animation happens
++ */
+ 
+-function convertFeature(features, feature, tolerance) {
+-    var geom = feature.geometry,
+-        type = geom.type,
+-        coords = geom.coordinates,
+-        tags = feature.properties,
+-        i, j, rings;
++var Camera = module.exports = function() {};
+ 
+-    if (type === 'Point') {
+-        features.push(create(tags, 1, [projectPoint(coords)]));
++util.extend(Camera.prototype, /** @lends Map.prototype */{
++    /**
++     * Get the current view geographical point.
++     * @returns {LngLat}
++     */
++    getCenter: function() { return this.transform.center; },
+ 
+-    } else if (type === 'MultiPoint') {
+-        features.push(create(tags, 1, project(coords)));
++    /**
++     * Sets a map location. Equivalent to `jumpTo({center: center})`.
++     *
++     * @param {LngLat} center Map center to jump to
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     * @example
++     * map.setCenter([-74, 38]);
++     */
++    setCenter: function(center, eventData) {
++        this.jumpTo({center: center}, eventData);
++        return this;
++    },
+ 
+-    } else if (type === 'LineString') {
+-        features.push(create(tags, 2, [project(coords, tolerance)]));
++    /**
++     * Pan by a certain number of pixels
++     *
++     * @param {Array<number>} offset [x, y]
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    panBy: function(offset, options, eventData) {
++        this.panTo(this.transform.center,
++            util.extend({offset: Point.convert(offset).mult(-1)}, options), eventData);
++        return this;
++    },
+ 
+-    } else if (type === 'MultiLineString' || type === 'Polygon') {
+-        rings = [];
+-        for (i = 0; i < coords.length; i++) {
+-            rings.push(project(coords[i], tolerance));
+-        }
+-        features.push(create(tags, type === 'Polygon' ? 3 : 2, rings));
++    /**
++     * Pan to a certain location with easing
++     *
++     * @param {LngLat} lnglat Location to pan to
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    panTo: function(lnglat, options, eventData) {
++        return this.easeTo(util.extend({
++            center: lnglat
++        }, options), eventData);
++    },
+ 
+-    } else if (type === 'MultiPolygon') {
+-        rings = [];
+-        for (i = 0; i < coords.length; i++) {
+-            for (j = 0; j < coords[i].length; j++) {
+-                rings.push(project(coords[i][j], tolerance));
+-            }
+-        }
+-        features.push(create(tags, 3, rings));
+ 
+-    } else if (type === 'GeometryCollection') {
+-        for (i = 0; i < geom.geometries.length; i++) {
+-            convertFeature(features, {
+-                geometry: geom.geometries[i],
+-                properties: tags
+-            }, tolerance);
+-        }
++    /**
++     * Get the current zoom
++     * @returns {number}
++     */
++    getZoom: function() { return this.transform.zoom; },
+ 
+-    } else {
+-        throw new Error('Input data is not a valid GeoJSON object.');
+-    }
+-}
++    /**
++     * Sets a map zoom. Equivalent to `jumpTo({zoom: zoom})`.
++     *
++     * @param {number} zoom Map zoom level
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     * @example
++     * // zoom the map to 5
++     * map.setZoom(5);
++     */
++    setZoom: function(zoom, eventData) {
++        this.jumpTo({zoom: zoom}, eventData);
++        return this;
++    },
+ 
+-function create(tags, type, geometry) {
+-    var feature = {
+-        geometry: geometry,
+-        type: type,
+-        tags: tags || null,
+-        min: [2, 1], // initial bbox values;
+-        max: [-1, 0]  // note that coords are usually in [0..1] range
+-    };
+-    calcBBox(feature);
+-    return feature;
+-}
++    /**
++     * Zooms to a certain zoom level with easing.
++     *
++     * @param {number} zoom
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     */
++    zoomTo: function(zoom, options, eventData) {
++        return this.easeTo(util.extend({
++            zoom: zoom
++        }, options), eventData);
++    },
+ 
+-function project(lonlats, tolerance) {
+-    var projected = [];
+-    for (var i = 0; i < lonlats.length; i++) {
+-        projected.push(projectPoint(lonlats[i]));
+-    }
+-    if (tolerance) {
+-        simplify(projected, tolerance);
+-        calcSize(projected);
+-    }
+-    return projected;
+-}
++    /**
++     * Zoom in by 1 level
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     */
++    zoomIn: function(options, eventData) {
++        this.zoomTo(this.getZoom() + 1, options, eventData);
++        return this;
++    },
+ 
+-function projectPoint(p) {
+-    var sin = Math.sin(p[1] * Math.PI / 180),
+-        x = (p[0] / 360 + 0.5),
+-        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
++    /**
++     * Zoom out by 1 level
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     */
++    zoomOut: function(options, eventData) {
++        this.zoomTo(this.getZoom() - 1, options, eventData);
++        return this;
++    },
+ 
+-    y = y < -1 ? -1 :
+-        y > 1 ? 1 : y;
+ 
+-    return [x, y, 0];
+-}
++    /**
++     * Get the current bearing in degrees
++     * @returns {number}
++     */
++    getBearing: function() { return this.transform.bearing; },
+ 
+-// calculate area and length of the poly
+-function calcSize(points) {
+-    var area = 0,
+-        dist = 0;
++    /**
++     * Sets a map rotation. Equivalent to `jumpTo({bearing: bearing})`.
++     *
++     * @param {number} bearing Map rotation bearing in degrees counter-clockwise from north
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     * @example
++     * // rotate the map to 90 degrees
++     * map.setBearing(90);
++     */
++    setBearing: function(bearing, eventData) {
++        this.jumpTo({bearing: bearing}, eventData);
++        return this;
++    },
+ 
+-    for (var i = 0, a, b; i < points.length - 1; i++) {
+-        a = b || points[i];
+-        b = points[i + 1];
++    /**
++     * Rotate bearing by a certain number of degrees with easing
++     *
++     * @param {number} bearing
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    rotateTo: function(bearing, options, eventData) {
++        return this.easeTo(util.extend({
++            bearing: bearing
++        }, options), eventData);
++    },
+ 
+-        area += a[0] * b[1] - b[0] * a[1];
++    /**
++     * Sets map bearing to 0 (north) with easing
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    resetNorth: function(options, eventData) {
++        this.rotateTo(0, util.extend({duration: 1000}, options), eventData);
++        return this;
++    },
+ 
+-        // use Manhattan distance instead of Euclidian one to avoid expensive square root computation
+-        dist += Math.abs(b[0] - a[0]) + Math.abs(b[1] - a[1]);
+-    }
+-    points.area = Math.abs(area / 2);
+-    points.dist = dist;
+-}
++    /**
++     * Animates map bearing to 0 (north) if it's already close to it.
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    snapToNorth: function(options, eventData) {
++        if (Math.abs(this.getBearing()) < this.options.bearingSnap) {
++            return this.resetNorth(options, eventData);
++        }
++        return this;
++    },
+ 
+-// calculate the feature bounding box for faster clipping later
+-function calcBBox(feature) {
+-    var geometry = feature.geometry,
+-        min = feature.min,
+-        max = feature.max;
++    /**
++     * Get the current angle in degrees
++     * @returns {number}
++     */
++    getPitch: function() { return this.transform.pitch; },
+ 
+-    if (feature.type === 1) calcRingBBox(min, max, geometry);
+-    else for (var i = 0; i < geometry.length; i++) calcRingBBox(min, max, geometry[i]);
++    /**
++     * Sets a map angle. Equivalent to `jumpTo({pitch: pitch})`.
++     *
++     * @param {number} pitch The angle at which the camera is looking at the ground
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    setPitch: function(pitch, eventData) {
++        this.jumpTo({pitch: pitch}, eventData);
++        return this;
++    },
+ 
+-    return feature;
+-}
+ 
+-function calcRingBBox(min, max, points) {
+-    for (var i = 0, p; i < points.length; i++) {
+-        p = points[i];
+-        min[0] = Math.min(p[0], min[0]);
+-        max[0] = Math.max(p[0], max[0]);
+-        min[1] = Math.min(p[1], min[1]);
+-        max[1] = Math.max(p[1], max[1]);
+-    }
+-}
++    /**
++     * Zoom to contain certain geographical bounds
++     *
++     * @param {LngLatBounds|Array<Array<number>>} bounds [[minLng, minLat], [maxLng, maxLat]]
++     * @param {Object} options
++     * @param {boolean} [options.linear] When true, the map transitions to the new camera using
++     *     {@link #Map.easeTo}. When false, the map transitions using {@link #Map.flyTo}. See
++     *     {@link #Map.flyTo} for information on options specific to that animation transition.
++     * @param {Function} options.easing
++     * @param {number} options.padding how much padding there is around the given bounds on each side in pixels
++     * @param {number} options.maxZoom The resulting zoom level will be at most
++     *     this value.
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    fitBounds: function(bounds, options, eventData) {
+ 
+-},{"./simplify":359}],358:[function(require,module,exports){
+-'use strict';
++        options = util.extend({
++            padding: 0,
++            offset: [0, 0],
++            maxZoom: Infinity
++        }, options);
+ 
+-module.exports = geojsonvt;
++        bounds = LngLatBounds.convert(bounds);
+ 
+-var convert = require('./convert'),     // GeoJSON conversion and preprocessing
+-    transform = require('./transform'), // coordinate transformation
+-    clip = require('./clip'),           // stripe clipping algorithm
+-    wrap = require('./wrap'),           // date line processing
+-    createTile = require('./tile');     // final simplified tile generation
++        var offset = Point.convert(options.offset),
++            tr = this.transform,
++            nw = tr.project(bounds.getNorthWest()),
++            se = tr.project(bounds.getSouthEast()),
++            size = se.sub(nw),
++            scaleX = (tr.width - options.padding * 2 - Math.abs(offset.x) * 2) / size.x,
++            scaleY = (tr.height - options.padding * 2 - Math.abs(offset.y) * 2) / size.y;
+ 
++        options.center = tr.unproject(nw.add(se).div(2));
++        options.zoom = Math.min(tr.scaleZoom(tr.scale * Math.min(scaleX, scaleY)), options.maxZoom);
++        options.bearing = 0;
+ 
+-function geojsonvt(data, options) {
+-    return new GeoJSONVT(data, options);
+-}
++        return options.linear ?
++            this.easeTo(options, eventData) :
++            this.flyTo(options, eventData);
++    },
+ 
+-function GeoJSONVT(data, options) {
+-    options = this.options = extend(Object.create(this.options), options);
++    /**
++     * Change any combination of center, zoom, bearing, and pitch, without
++     * a transition. The map will retain the current values for any options
++     * not included in `options`.
++     *
++     * @param {CameraOptions} options map view options
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires rotate
++     * @fires pitch
++     * @fires zoomend
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    jumpTo: function(options, eventData) {
++        this.stop();
+ 
+-    var debug = options.debug;
++        var tr = this.transform,
++            zoomChanged = false,
++            bearingChanged = false,
++            pitchChanged = false;
+ 
+-    if (debug) console.time('preprocess data');
++        if ('zoom' in options && tr.zoom !== +options.zoom) {
++            zoomChanged = true;
++            tr.zoom = +options.zoom;
++        }
+ 
+-    var z2 = 1 << options.maxZoom, // 2^z
+-        features = convert(data, options.tolerance / (z2 * options.extent));
++        if ('center' in options) {
++            tr.center = LngLat.convert(options.center);
++        }
+ 
+-    this.tiles = {};
+-    this.tileCoords = [];
++        if ('bearing' in options && tr.bearing !== +options.bearing) {
++            bearingChanged = true;
++            tr.bearing = +options.bearing;
++        }
+ 
+-    if (debug) {
+-        console.timeEnd('preprocess data');
+-        console.log('index: maxZoom: %d, maxPoints: %d', options.indexMaxZoom, options.indexMaxPoints);
+-        console.time('generate tiles');
+-        this.stats = {};
+-        this.total = 0;
+-    }
++        if ('pitch' in options && tr.pitch !== +options.pitch) {
++            pitchChanged = true;
++            tr.pitch = +options.pitch;
++        }
+ 
+-    features = wrap(features, options.buffer / options.extent, intersectX);
++        this.fire('movestart', eventData)
++            .fire('move', eventData);
+ 
+-    // start slicing from the top tile down
+-    if (features.length) this.splitTile(features, 0, 0, 0);
++        if (zoomChanged) {
++            this.fire('zoomstart', eventData)
++                .fire('zoom', eventData)
++                .fire('zoomend', eventData);
++        }
+ 
+-    if (debug) {
+-        if (features.length) console.log('features: %d, points: %d', this.tiles[0].numFeatures, this.tiles[0].numPoints);
+-        console.timeEnd('generate tiles');
+-        console.log('tiles generated:', this.total, JSON.stringify(this.stats));
+-    }
+-}
++        if (bearingChanged) {
++            this.fire('rotate', eventData);
++        }
+ 
+-GeoJSONVT.prototype.options = {
+-    maxZoom: 14,            // max zoom to preserve detail on
+-    indexMaxZoom: 5,        // max zoom in the tile index
+-    indexMaxPoints: 100000, // max number of points per tile in the tile index
+-    solidChildren: false,   // whether to tile solid square tiles further
+-    tolerance: 3,           // simplification tolerance (higher means simpler)
+-    extent: 4096,           // tile extent
+-    buffer: 64,             // tile buffer on each side
+-    debug: 0                // logging level (0, 1 or 2)
+-};
++        if (pitchChanged) {
++            this.fire('pitch', eventData);
++        }
+ 
+-GeoJSONVT.prototype.splitTile = function (features, z, x, y, cz, cx, cy) {
++        return this.fire('moveend', eventData);
++    },
+ 
+-    var stack = [features, z, x, y],
+-        options = this.options,
+-        debug = options.debug,
+-        solid = null;
++    /**
++     * Change any combination of center, zoom, bearing, and pitch, with a smooth animation
++     * between old and new values. The map will retain the current values for any options
++     * not included in `options`.
++     *
++     * @param {CameraOptions|AnimationOptions} options map view and animation options
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires rotate
++     * @fires pitch
++     * @fires zoomend
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    easeTo: function(options, eventData) {
++        this.stop();
+ 
+-    // avoid recursion by using a processing queue
+-    while (stack.length) {
+-        y = stack.pop();
+-        x = stack.pop();
+-        z = stack.pop();
+-        features = stack.pop();
++        options = util.extend({
++            offset: [0, 0],
++            duration: 500,
++            easing: util.ease
++        }, options);
+ 
+-        var z2 = 1 << z,
+-            id = toID(z, x, y),
+-            tile = this.tiles[id],
+-            tileTolerance = z === options.maxZoom ? 0 : options.tolerance / (z2 * options.extent);
++        var tr = this.transform,
++            offset = Point.convert(options.offset),
++            startZoom = this.getZoom(),
++            startBearing = this.getBearing(),
++            startPitch = this.getPitch(),
+ 
+-        if (!tile) {
+-            if (debug > 1) console.time('creation');
++            zoom = 'zoom' in options ? +options.zoom : startZoom,
++            bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing,
++            pitch = 'pitch' in options ? +options.pitch : startPitch,
+ 
+-            tile = this.tiles[id] = createTile(features, z2, x, y, tileTolerance, z === options.maxZoom);
+-            this.tileCoords.push({z: z, x: x, y: y});
++            toLngLat,
++            toPoint;
+ 
+-            if (debug) {
+-                if (debug > 1) {
+-                    console.log('tile z%d-%d-%d (features: %d, points: %d, simplified: %d)',
+-                        z, x, y, tile.numFeatures, tile.numPoints, tile.numSimplified);
+-                    console.timeEnd('creation');
+-                }
+-                var key = 'z' + z;
+-                this.stats[key] = (this.stats[key] || 0) + 1;
+-                this.total++;
+-            }
++        if ('center' in options) {
++            toLngLat = LngLat.convert(options.center);
++            toPoint = tr.centerPoint.add(offset);
++        } else if ('around' in options) {
++            toLngLat = LngLat.convert(options.around);
++            toPoint = tr.locationPoint(toLngLat);
++        } else {
++            toPoint = tr.centerPoint.add(offset);
++            toLngLat = tr.pointLocation(toPoint);
+         }
+ 
+-        // save reference to original geometry in tile so that we can drill down later if we stop now
+-        tile.source = features;
++        var fromPoint = tr.locationPoint(toLngLat);
+ 
+-        // if it's the first-pass tiling
+-        if (!cz) {
+-            // stop tiling if we reached max zoom, or if the tile is too simple
+-            if (z === options.indexMaxZoom || tile.numPoints <= options.indexMaxPoints) continue;
++        if (options.animate === false) options.duration = 0;
+ 
+-        // if a drilldown to a specific tile
+-        } else {
+-            // stop tiling if we reached base zoom or our target tile zoom
+-            if (z === options.maxZoom || z === cz) continue;
++        this.zooming = (zoom !== startZoom);
++        this.rotating = (startBearing !== bearing);
++        this.pitching = (pitch !== startPitch);
+ 
+-            // stop tiling if it's not an ancestor of the target tile
+-            var m = 1 << (cz - z);
+-            if (x !== Math.floor(cx / m) || y !== Math.floor(cy / m)) continue;
++        if (!options.noMoveStart) {
++            this.fire('movestart', eventData);
+         }
+-
+-        // stop tiling if the tile is solid clipped square
+-        if (!options.solidChildren && isClippedSquare(tile, options.extent, options.buffer)) {
+-            if (cz) solid = z; // and remember the zoom if we're drilling down
+-            continue;
++        if (this.zooming) {
++            this.fire('zoomstart', eventData);
+         }
+ 
+-        // if we slice further down, no need to keep source geometry
+-        tile.source = null;
++        clearTimeout(this._onEaseEnd);
+ 
+-        if (debug > 1) console.time('clipping');
++        this._ease(function (k) {
++            if (this.zooming) {
++                tr.zoom = interpolate(startZoom, zoom, k);
++            }
+ 
+-        // values we'll use for clipping
+-        var k1 = 0.5 * options.buffer / options.extent,
+-            k2 = 0.5 - k1,
+-            k3 = 0.5 + k1,
+-            k4 = 1 + k1,
+-            tl, bl, tr, br, left, right;
++            if (this.rotating) {
++                tr.bearing = interpolate(startBearing, bearing, k);
++            }
+ 
+-        tl = bl = tr = br = null;
++            if (this.pitching) {
++                tr.pitch = interpolate(startPitch, pitch, k);
++            }
+ 
+-        left  = clip(features, z2, x - k1, x + k3, 0, intersectX, tile.min[0], tile.max[0]);
+-        right = clip(features, z2, x + k2, x + k4, 0, intersectX, tile.min[0], tile.max[0]);
++            tr.setLocationAtPoint(toLngLat, fromPoint.add(toPoint.sub(fromPoint)._mult(k)));
+ 
+-        if (left) {
+-            tl = clip(left, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
+-            bl = clip(left, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
+-        }
++            this.fire('move', eventData);
++            if (this.zooming) {
++                this.fire('zoom', eventData);
++            }
++            if (this.rotating) {
++                this.fire('rotate', eventData);
++            }
++            if (this.pitching) {
++                this.fire('pitch', eventData);
++            }
++        }, function() {
++            if (options.delayEndEvents) {
++                this._onEaseEnd = setTimeout(this._easeToEnd.bind(this, eventData), options.delayEndEvents);
++            } else {
++                this._easeToEnd(eventData);
++            }
++        }.bind(this), options);
+ 
+-        if (right) {
+-            tr = clip(right, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
+-            br = clip(right, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
+-        }
++        return this;
++    },
+ 
+-        if (debug > 1) console.timeEnd('clipping');
++    _easeToEnd: function(eventData) {
++        if (this.zooming) {
++            this.fire('zoomend', eventData);
++        }
++        this.fire('moveend', eventData);
+ 
+-        if (tl) stack.push(tl, z + 1, x * 2,     y * 2);
+-        if (bl) stack.push(bl, z + 1, x * 2,     y * 2 + 1);
+-        if (tr) stack.push(tr, z + 1, x * 2 + 1, y * 2);
+-        if (br) stack.push(br, z + 1, x * 2 + 1, y * 2 + 1);
+-    }
++        this.zooming = false;
++        this.rotating = false;
++        this.pitching = false;
++    },
+ 
+-    return solid;
+-};
++    /**
++     * Change any combination of center, zoom, bearing, and pitch, animated along a curve that
++     * evokes flight. The transition animation seamlessly incorporates zooming and panning to help
++     * the user find his or her bearings even after traversing a great distance.
++     *
++     * @param {CameraOptions|AnimationOptions} options map view and animation options
++     * @param {number} [options.curve=1.42] Relative amount of zooming that takes place along the
++     *     flight path. A high value maximizes zooming for an exaggerated animation, while a low
++     *     value minimizes zooming for something closer to {@link #Map.easeTo}. 1.42 is the average
++     *     value selected by participants in the user study in
++     *     [van Wijk (2003)](https://www.win.tue.nl/~vanwijk/zoompan.pdf). A value of
++     *     `Math.pow(6, 0.25)` would be equivalent to the root mean squared average velocity. A
++     *     value of 1 would produce a circular motion.
++     * @param {number} [options.minZoom] Zero-based zoom level at the peak of the flight path. If
++     *     `options.curve` is specified, this option is ignored.
++     * @param {number} [options.speed=1.2] Average speed of the animation. A speed of 1.2 means that
++     *     the map appears to move along the flight path by 1.2 times `options.curve` screenfuls every
++     *     second. A _screenful_ is the visible span in pixels. It does not correspond to a fixed
++     *     physical distance but rather varies by zoom level.
++     * @param {number} [options.screenSpeed] Average speed of the animation, measured in screenfuls
++     *     per second, assuming a linear timing curve. If `options.speed` is specified, this option
++     *     is ignored.
++     * @param {Function} [options.easing] Transition timing curve
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires rotate
++     * @fires pitch
++     * @fires zoomend
++     * @fires moveend
++     * @returns {this}
++     * @example
++     * // fly with default options to null island
++     * map.flyTo({center: [0, 0], zoom: 9});
++     * // using flyTo options
++     * map.flyTo({
++     *   center: [0, 0],
++     *   zoom: 9,
++     *   speed: 0.2,
++     *   curve: 1,
++     *   easing: function(t) {
++     *     return t;
++     *   }
++     * });
++     */
++    flyTo: function(options, eventData) {
++        // This method implements an “optimal path” animation, as detailed in:
++        //
++        // Van Wijk, Jarke J.; Nuij, Wim A. A. “Smooth and efficient zooming and panning.” INFOVIS
++        //   ’03. pp. 15–22. <https://www.win.tue.nl/~vanwijk/zoompan.pdf#page=5>.
++        //
++        // Where applicable, local variable documentation begins with the associated variable or
++        // function in van Wijk (2003).
+ 
+-GeoJSONVT.prototype.getTile = function (z, x, y) {
+-    var options = this.options,
+-        extent = options.extent,
+-        debug = options.debug;
++        this.stop();
+ 
+-    var z2 = 1 << z;
+-    x = ((x % z2) + z2) % z2; // wrap tile x coordinate
++        options = util.extend({
++            offset: [0, 0],
++            speed: 1.2,
++            curve: 1.42,
++            easing: util.ease
++        }, options);
+ 
+-    var id = toID(z, x, y);
+-    if (this.tiles[id]) return transform.tile(this.tiles[id], extent);
++        var tr = this.transform,
++            offset = Point.convert(options.offset),
++            startZoom = this.getZoom(),
++            startBearing = this.getBearing(),
++            startPitch = this.getPitch();
+ 
+-    if (debug > 1) console.log('drilling down to z%d-%d-%d', z, x, y);
++        var center = 'center' in options ? LngLat.convert(options.center) : this.getCenter();
++        var zoom = 'zoom' in options ?  +options.zoom : startZoom;
++        var bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing;
++        var pitch = 'pitch' in options ? +options.pitch : startPitch;
+ 
+-    var z0 = z,
+-        x0 = x,
+-        y0 = y,
+-        parent;
++        // If a path crossing the antimeridian would be shorter, extend the final coordinate so that
++        // interpolating between the two endpoints will cross it.
++        if (Math.abs(tr.center.lng) + Math.abs(center.lng) > 180) {
++            if (tr.center.lng > 0 && center.lng < 0) {
++                center.lng += 360;
++            } else if (tr.center.lng < 0 && center.lng > 0) {
++                center.lng -= 360;
++            }
++        }
+ 
+-    while (!parent && z0 > 0) {
+-        z0--;
+-        x0 = Math.floor(x0 / 2);
+-        y0 = Math.floor(y0 / 2);
+-        parent = this.tiles[toID(z0, x0, y0)];
+-    }
++        var scale = tr.zoomScale(zoom - startZoom),
++            from = tr.point,
++            to = 'center' in options ? tr.project(center).sub(offset.div(scale)) : from;
+ 
+-    if (!parent || !parent.source) return null;
++        var startWorldSize = tr.worldSize,
++            rho = options.curve,
+ 
+-    // if we found a parent tile containing the original geometry, we can drill down from it
+-    if (debug > 1) console.log('found parent tile z%d-%d-%d', z0, x0, y0);
++            // w₀: Initial visible span, measured in pixels at the initial scale.
++            w0 = Math.max(tr.width, tr.height),
++            // w₁: Final visible span, measured in pixels with respect to the initial scale.
++            w1 = w0 / scale,
++            // Length of the flight path as projected onto the ground plane, measured in pixels from
++            // the world image origin at the initial scale.
++            u1 = to.sub(from).mag();
+ 
+-    // it parent tile is a solid clipped square, return it instead since it's identical
+-    if (isClippedSquare(parent, extent, options.buffer)) return transform.tile(parent, extent);
++        if ('minZoom' in options) {
++            var minZoom = util.clamp(Math.min(options.minZoom, startZoom, zoom), tr.minZoom, tr.maxZoom);
++            // w<sub>m</sub>: Maximum visible span, measured in pixels with respect to the initial
++            // scale.
++            var wMax = w0 / tr.zoomScale(minZoom - startZoom);
++            rho = Math.sqrt(wMax / u1 * 2);
++        }
+ 
+-    if (debug > 1) console.time('drilling down');
+-    var solid = this.splitTile(parent.source, z0, x0, y0, z, x, y);
+-    if (debug > 1) console.timeEnd('drilling down');
++        // ρ²
++        var rho2 = rho * rho;
+ 
+-    // one of the parent tiles was a solid clipped square
+-    if (solid !== null) {
+-        var m = 1 << (z - solid);
+-        id = toID(solid, Math.floor(x / m), Math.floor(y / m));
+-    }
++        /**
++         * rᵢ: Returns the zoom-out factor at one end of the animation.
++         *
++         * @param i 0 for the ascent or 1 for the descent.
++         * @private
++         */
++        function r(i) {
++            var b = (w1 * w1 - w0 * w0 + (i ? -1 : 1) * rho2 * rho2 * u1 * u1) / (2 * (i ? w1 : w0) * rho2 * u1);
++            return Math.log(Math.sqrt(b * b + 1) - b);
++        }
+ 
+-    return this.tiles[id] ? transform.tile(this.tiles[id], extent) : null;
+-};
++        function sinh(n) { return (Math.exp(n) - Math.exp(-n)) / 2; }
++        function cosh(n) { return (Math.exp(n) + Math.exp(-n)) / 2; }
++        function tanh(n) { return sinh(n) / cosh(n); }
+ 
+-function toID(z, x, y) {
+-    return (((1 << z) * y + x) * 32) + z;
+-}
++        // r₀: Zoom-out factor during ascent.
++        var r0 = r(0),
++            /**
++             * w(s): Returns the visible span on the ground, measured in pixels with respect to the
++             * initial scale.
++             *
++             * Assumes an angular field of view of 2 arctan ½ ≈ 53°.
++             * @private
++             */
++            w = function (s) { return (cosh(r0) / cosh(r0 + rho * s)); },
++            /**
++             * u(s): Returns the distance along the flight path as projected onto the ground plane,
++             * measured in pixels from the world image origin at the initial scale.
++             * @private
++             */
++            u = function (s) { return w0 * ((cosh(r0) * tanh(r0 + rho * s) - sinh(r0)) / rho2) / u1; },
++            // S: Total length of the flight path, measured in ρ-screenfuls.
++            S = (r(1) - r0) / rho;
+ 
+-function intersectX(a, b, x) {
+-    return [x, (x - a[0]) * (b[1] - a[1]) / (b[0] - a[0]) + a[1], 1];
+-}
+-function intersectY(a, b, y) {
+-    return [(y - a[1]) * (b[0] - a[0]) / (b[1] - a[1]) + a[0], y, 1];
+-}
++        // When u₀ = u₁, the optimal path doesn’t require both ascent and descent.
++        if (Math.abs(u1) < 0.000001) {
++            // Perform a more or less instantaneous transition if the path is too short.
++            if (Math.abs(w0 - w1) < 0.000001) return this.easeTo(options);
+ 
+-function extend(dest, src) {
+-    for (var i in src) dest[i] = src[i];
+-    return dest;
+-}
++            var k = w1 < w0 ? -1 : 1;
++            S = Math.abs(Math.log(w1 / w0)) / rho;
+ 
+-// checks whether a tile is a whole-area fill after clipping; if it is, there's no sense slicing it further
+-function isClippedSquare(tile, extent, buffer) {
++            u = function() { return 0; };
++            w = function(s) { return Math.exp(k * rho * s); };
++        }
+ 
+-    var features = tile.source;
+-    if (features.length !== 1) return false;
++        if ('duration' in options) {
++            options.duration = +options.duration;
++        } else {
++            var V = 'screenSpeed' in options ? +options.screenSpeed / rho : +options.speed;
++            options.duration = 1000 * S / V;
++        }
+ 
+-    var feature = features[0];
+-    if (feature.type !== 3 || feature.geometry.length > 1) return false;
++        this.zooming = true;
++        if (startBearing !== bearing) this.rotating = true;
++        if (startPitch !== pitch) this.pitching = true;
+ 
+-    var len = feature.geometry[0].length;
+-    if (len !== 5) return false;
++        this.fire('movestart', eventData);
++        this.fire('zoomstart', eventData);
+ 
+-    for (var i = 0; i < len; i++) {
+-        var p = transform.point(feature.geometry[0][i], extent, tile.z2, tile.x, tile.y);
+-        if ((p[0] !== -buffer && p[0] !== extent + buffer) ||
+-            (p[1] !== -buffer && p[1] !== extent + buffer)) return false;
+-    }
++        this._ease(function (k) {
++            // s: The distance traveled along the flight path, measured in ρ-screenfuls.
++            var s = k * S,
++                us = u(s);
+ 
+-    return true;
+-}
++            tr.zoom = startZoom + tr.scaleZoom(1 / w(s));
++            tr.center = tr.unproject(from.add(to.sub(from).mult(us)), startWorldSize);
+ 
+-},{"./clip":356,"./convert":357,"./tile":360,"./transform":361,"./wrap":362}],359:[function(require,module,exports){
+-'use strict';
++            if (this.rotating) {
++                tr.bearing = interpolate(startBearing, bearing, k);
++            }
++            if (this.pitching) {
++                tr.pitch = interpolate(startPitch, pitch, k);
++            }
+ 
+-module.exports = simplify;
++            this.fire('move', eventData);
++            this.fire('zoom', eventData);
++            if (this.rotating) {
++                this.fire('rotate', eventData);
++            }
++            if (this.pitching) {
++                this.fire('pitch', eventData);
++            }
++        }, function() {
++            this.fire('zoomend', eventData);
++            this.fire('moveend', eventData);
++            this.zooming = false;
++            this.rotating = false;
++            this.pitching = false;
++        }, options);
+ 
+-// calculate simplification data using optimized Douglas-Peucker algorithm
++        return this;
++    },
+ 
+-function simplify(points, tolerance) {
++    isEasing: function() {
++        return !!this._abortFn;
++    },
+ 
+-    var sqTolerance = tolerance * tolerance,
+-        len = points.length,
+-        first = 0,
+-        last = len - 1,
+-        stack = [],
+-        i, maxSqDist, sqDist, index;
++    /**
++     * Stop current animation
++     *
++     * @returns {Map} `this`
++     */
++    stop: function() {
++        if (this._abortFn) {
++            this._abortFn();
++            this._finishEase();
++        }
++        return this;
++    },
+ 
+-    // always retain the endpoints (1 is the max value)
+-    points[first][2] = 1;
+-    points[last][2] = 1;
++    _ease: function(frame, finish, options) {
++        this._finishFn = finish;
++        this._abortFn = browser.timed(function (t) {
++            frame.call(this, options.easing(t));
++            if (t === 1) {
++                this._finishEase();
++            }
++        }, options.animate === false ? 0 : options.duration, this);
++    },
+ 
+-    // avoid recursion by using a stack
+-    while (last) {
++    _finishEase: function() {
++        delete this._abortFn;
++        // The finish function might emit events which trigger new eases, which
++        // set a new _finishFn. Ensure we don't delete it unintentionally.
++        var finish = this._finishFn;
++        delete this._finishFn;
++        finish.call(this);
++    },
+ 
+-        maxSqDist = 0;
++    // convert bearing so that it's numerically close to the current one so that it interpolates properly
++    _normalizeBearing: function(bearing, currentBearing) {
++        bearing = util.wrap(bearing, -180, 180);
++        var diff = Math.abs(bearing - currentBearing);
++        if (Math.abs(bearing - 360 - currentBearing) < diff) bearing -= 360;
++        if (Math.abs(bearing + 360 - currentBearing) < diff) bearing += 360;
++        return bearing;
++    },
+ 
+-        for (i = first + 1; i < last; i++) {
+-            sqDist = getSqSegDist(points[i], points[first], points[last]);
++    _updateEasing: function(duration, zoom, bezier) {
++        var easing;
+ 
+-            if (sqDist > maxSqDist) {
+-                index = i;
+-                maxSqDist = sqDist;
+-            }
+-        }
++        if (this.ease) {
++            var ease = this.ease,
++                t = (Date.now() - ease.start) / ease.duration,
++                speed = ease.easing(t + 0.01) - ease.easing(t),
+ 
+-        if (maxSqDist > sqTolerance) {
+-            points[index][2] = maxSqDist; // save the point importance in squared pixels as a z coordinate
+-            stack.push(first);
+-            stack.push(index);
+-            first = index;
++                // Quick hack to make new bezier that is continuous with last
++                x = 0.27 / Math.sqrt(speed * speed + 0.0001) * 0.01,
++                y = Math.sqrt(0.27 * 0.27 - x * x);
+ 
++            easing = util.bezier(x, y, 0.25, 1);
+         } else {
+-            last = stack.pop();
+-            first = stack.pop();
++            easing = bezier ? util.bezier.apply(util, bezier) : util.ease;
+         }
++
++        // store information on current easing
++        this.ease = {
++            start: (new Date()).getTime(),
++            to: Math.pow(2, zoom),
++            duration: duration,
++            easing: easing
++        };
++
++        return easing;
+     }
+-}
++});
+ 
+-// square distance from a point to a segment
+-function getSqSegDist(p, a, b) {
++/**
++ * Pitch event. This event is emitted whenever the map's pitch changes.
++ *
++ * @event pitch
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
++ */
+ 
+-    var x = a[0], y = a[1],
+-        bx = b[0], by = b[1],
+-        px = p[0], py = p[1],
+-        dx = bx - x,
+-        dy = by - y;
++},{"../geo/lng_lat":269,"../geo/lng_lat_bounds":270,"../util/browser":348,"../util/interpolate":356,"../util/util":362,"point-geometry":400}],331:[function(require,module,exports){
++'use strict';
+ 
+-    if (dx !== 0 || dy !== 0) {
++var Control = require('./control');
++var DOM = require('../../util/dom');
++var util = require('../../util/util');
+ 
+-        var t = ((px - x) * dx + (py - y) * dy) / (dx * dx + dy * dy);
++module.exports = Attribution;
+ 
+-        if (t > 1) {
+-            x = bx;
+-            y = by;
++/**
++ * Creates an attribution control
++ * @class Attribution
++ * @param {Object} [options]
++ * @param {string} [options.position='bottom-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
++ * @example
++ * var map = new mapboxgl.Map({attributionControl: false})
++ *     .addControl(new mapboxgl.Attribution({position: 'top-left'}));
++ */
++function Attribution(options) {
++    util.setOptions(this, options);
++}
+ 
+-        } else if (t > 0) {
+-            x += dx * t;
+-            y += dy * t;
++Attribution.createAttributionString = function(sources) {
++    var attributions = [];
++
++    for (var id in sources) {
++        var source = sources[id];
++        if (source.attribution && attributions.indexOf(source.attribution) < 0) {
++            attributions.push(source.attribution);
+         }
+     }
+ 
+-    dx = px - x;
+-    dy = py - y;
+-
+-    return dx * dx + dy * dy;
+-}
++    // remove any entries that are substrings of another entry.
++    // first sort by length so that substrings come first
++    attributions.sort(function (a, b) { return a.length - b.length; });
++    attributions = attributions.filter(function (attrib, i) {
++        for (var j = i + 1; j < attributions.length; j++) {
++            if (attributions[j].indexOf(attrib) >= 0) { return false; }
++        }
++        return true;
++    });
+ 
+-},{}],360:[function(require,module,exports){
+-'use strict';
++    return attributions.join(' | ');
++};
+ 
+-module.exports = createTile;
++Attribution.prototype = util.inherit(Control, {
++    options: {
++        position: 'bottom-right'
++    },
+ 
+-function createTile(features, z2, tx, ty, tolerance, noSimplify) {
+-    var tile = {
+-        features: [],
+-        numPoints: 0,
+-        numSimplified: 0,
+-        numFeatures: 0,
+-        source: null,
+-        x: tx,
+-        y: ty,
+-        z2: z2,
+-        transformed: false,
+-        min: [2, 1],
+-        max: [-1, 0]
+-    };
+-    for (var i = 0; i < features.length; i++) {
+-        tile.numFeatures++;
+-        addFeature(tile, features[i], tolerance, noSimplify);
++    onAdd: function(map) {
++        var className = 'mapboxgl-ctrl-attrib',
++            container = this._container = DOM.create('div', className, map.getContainer());
+ 
+-        var min = features[i].min,
+-            max = features[i].max;
++        this._update();
++        map.on('source.load', this._update.bind(this));
++        map.on('source.change', this._update.bind(this));
++        map.on('source.remove', this._update.bind(this));
++        map.on('moveend', this._updateEditLink.bind(this));
+ 
+-        if (min[0] < tile.min[0]) tile.min[0] = min[0];
+-        if (min[1] < tile.min[1]) tile.min[1] = min[1];
+-        if (max[0] > tile.max[0]) tile.max[0] = max[0];
+-        if (max[1] > tile.max[1]) tile.max[1] = max[1];
+-    }
+-    return tile;
+-}
++        return container;
++    },
+ 
+-function addFeature(tile, feature, tolerance, noSimplify) {
++    _update: function() {
++        if (this._map.style) {
++            this._container.innerHTML = Attribution.createAttributionString(this._map.style.sources);
++        }
+ 
+-    var geom = feature.geometry,
+-        type = feature.type,
+-        simplified = [],
+-        sqTolerance = tolerance * tolerance,
+-        i, j, ring, p;
++        this._editLink = this._container.getElementsByClassName('mapbox-improve-map')[0];
++        this._updateEditLink();
++    },
+ 
+-    if (type === 1) {
+-        for (i = 0; i < geom.length; i++) {
+-            simplified.push(geom[i]);
+-            tile.numPoints++;
+-            tile.numSimplified++;
++    _updateEditLink: function() {
++        if (this._editLink) {
++            var center = this._map.getCenter();
++            this._editLink.href = 'https://www.mapbox.com/map-feedback/#/' +
++                    center.lng + '/' + center.lat + '/' + Math.round(this._map.getZoom() + 1);
+         }
++    }
++});
+ 
+-    } else {
+-
+-        // simplify and transform projected coordinates for tile geometry
+-        for (i = 0; i < geom.length; i++) {
+-            ring = geom[i];
++},{"../../util/dom":351,"../../util/util":362,"./control":332}],332:[function(require,module,exports){
++'use strict';
+ 
+-            // filter out tiny polylines & polygons
+-            if (!noSimplify && ((type === 2 && ring.dist < tolerance) ||
+-                                (type === 3 && ring.area < sqTolerance))) {
+-                tile.numPoints += ring.length;
+-                continue;
+-            }
++module.exports = Control;
+ 
+-            var simplifiedRing = [];
++/**
++ * A base class for map-related interface elements.
++ *
++ * @class Control
++ */
++function Control() {}
+ 
+-            for (j = 0; j < ring.length; j++) {
+-                p = ring[j];
+-                // keep points with importance > tolerance
+-                if (noSimplify || p[2] > sqTolerance) {
+-                    simplifiedRing.push(p);
+-                    tile.numSimplified++;
+-                }
+-                tile.numPoints++;
++Control.prototype = {
++    /**
++     * Add this control to the map, returning the control itself
++     * for chaining. This will insert the control's DOM element into
++     * the map's DOM element if the control has a `position` specified.
++     *
++     * @param {Map} map
++     * @returns {Control} `this`
++     */
++    addTo: function(map) {
++        this._map = map;
++        var container = this._container = this.onAdd(map);
++        if (this.options && this.options.position) {
++            var pos = this.options.position;
++            var corner = map._controlCorners[pos];
++            container.className += ' mapboxgl-ctrl';
++            if (pos.indexOf('bottom') !== -1) {
++                corner.insertBefore(container, corner.firstChild);
++            } else {
++                corner.appendChild(container);
+             }
+-
+-            simplified.push(simplifiedRing);
+         }
+-    }
+ 
+-    if (simplified.length) {
+-        tile.features.push({
+-            geometry: simplified,
+-            type: type,
+-            tags: feature.tags || null
+-        });
++        return this;
++    },
++
++    /**
++     * Remove this control from the map it has been added to.
++     *
++     * @returns {Control} `this`
++     */
++    remove: function() {
++        this._container.parentNode.removeChild(this._container);
++        if (this.onRemove) this.onRemove(this._map);
++        this._map = null;
++        return this;
+     }
+-}
++};
+ 
+-},{}],361:[function(require,module,exports){
++},{}],333:[function(require,module,exports){
+ 'use strict';
+ 
+-exports.tile = transformTile;
+-exports.point = transformPoint;
++var Control = require('./control');
++var browser = require('../../util/browser');
++var DOM = require('../../util/dom');
++var util = require('../../util/util');
+ 
+-// Transforms the coordinates of each feature in the given tile from
+-// mercator-projected space into (extent x extent) tile space.
+-function transformTile(tile, extent) {
+-    if (tile.transformed) return tile;
++module.exports = Geolocate;
+ 
+-    var z2 = tile.z2,
+-        tx = tile.x,
+-        ty = tile.y,
+-        i, j, k;
++var geoOptions = { enableHighAccuracy: false, timeout: 6000 /* 6sec */ };
+ 
+-    for (i = 0; i < tile.features.length; i++) {
+-        var feature = tile.features[i],
+-            geom = feature.geometry,
+-            type = feature.type;
+ 
+-        if (type === 1) {
+-            for (j = 0; j < geom.length; j++) geom[j] = transformPoint(geom[j], extent, z2, tx, ty);
++/**
++ * Creates a geolocation control
++ * @class Geolocate
++ * @param {Object} [options]
++ * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
++ * @example
++ * map.addControl(new mapboxgl.Geolocate({position: 'top-left'})); // position is optional
++ */
++function Geolocate(options) {
++    util.setOptions(this, options);
++}
+ 
+-        } else {
+-            for (j = 0; j < geom.length; j++) {
+-                var ring = geom[j];
+-                for (k = 0; k < ring.length; k++) ring[k] = transformPoint(ring[k], extent, z2, tx, ty);
+-            }
+-        }
+-    }
++Geolocate.prototype = util.inherit(Control, {
++    options: {
++        position: 'top-right'
++    },
+ 
+-    tile.transformed = true;
++    onAdd: function(map) {
++        var className = 'mapboxgl-ctrl';
+ 
+-    return tile;
+-}
++        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
++        if (!browser.supportsGeolocation) return container;
+ 
+-function transformPoint(p, extent, z2, tx, ty) {
+-    var x = Math.round(extent * (p[0] * z2 - tx)),
+-        y = Math.round(extent * (p[1] * z2 - ty));
+-    return [x, y];
+-}
++        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
+ 
+-},{}],362:[function(require,module,exports){
+-'use strict';
++        this._geolocateButton = DOM.create('button', (className + '-icon ' + className + '-geolocate'), this._container);
++        this._geolocateButton.addEventListener('click', this._onClickGeolocate.bind(this));
++        return container;
++    },
+ 
+-var clip = require('./clip');
++    _onContextMenu: function(e) {
++        e.preventDefault();
++    },
+ 
+-module.exports = wrap;
++    _onClickGeolocate: function() {
++        navigator.geolocation.getCurrentPosition(this._success.bind(this), this._error.bind(this), geoOptions);
+ 
+-function wrap(features, buffer, intersectX) {
+-    var merged = features,
+-        left  = clip(features, 1, -1 - buffer, buffer,     0, intersectX, -1, 2), // left world copy
+-        right = clip(features, 1,  1 - buffer, 2 + buffer, 0, intersectX, -1, 2); // right world copy
++        // This timeout ensures that we still call finish() even if
++        // the user declines to share their location in Firefox
++        this._timeoutId = setTimeout(this._finish.bind(this), 10000 /* 10sec */);
++    },
+ 
+-    if (left || right) {
+-        merged = clip(features, 1, -buffer, 1 + buffer, 0, intersectX, -1, 2); // center world copy
++    _success: function(position) {
++        this._map.jumpTo({
++            center: [position.coords.longitude, position.coords.latitude],
++            zoom: 17,
++            bearing: 0,
++            pitch: 0
++        });
++        this._finish();
++    },
+ 
+-        if (left) merged = shiftFeatureCoords(left, 1).concat(merged); // merge left into center
+-        if (right) merged = merged.concat(shiftFeatureCoords(right, -1)); // merge right into center
++    _error: function() {
++        this._finish();
++    },
++
++    _finish: function() {
++        if (this._timeoutId) { clearTimeout(this._timeoutId); }
++        this._timeoutId = undefined;
+     }
+ 
+-    return merged;
++});
++
++
++},{"../../util/browser":348,"../../util/dom":351,"../../util/util":362,"./control":332}],334:[function(require,module,exports){
++'use strict';
++
++var Control = require('./control');
++var DOM = require('../../util/dom');
++var util = require('../../util/util');
++
++module.exports = Navigation;
++
++/**
++ * Creates a navigation control with zoom buttons and a compass
++ * @class Navigation
++ * @param {Object} [options]
++ * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
++ * @example
++ * map.addControl(new mapboxgl.Navigation({position: 'top-left'})); // position is optional
++ */
++function Navigation(options) {
++    util.setOptions(this, options);
+ }
+ 
+-function shiftFeatureCoords(features, offset) {
+-    var newFeatures = [];
++Navigation.prototype = util.inherit(Control, {
++    options: {
++        position: 'top-right'
++    },
+ 
+-    for (var i = 0; i < features.length; i++) {
+-        var feature = features[i],
+-            type = feature.type;
++    onAdd: function(map) {
++        var className = 'mapboxgl-ctrl';
+ 
+-        var newGeometry;
++        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
++        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
+ 
+-        if (type === 1) {
+-            newGeometry = shiftCoords(feature.geometry, offset);
+-        } else {
+-            newGeometry = [];
+-            for (var j = 0; j < feature.geometry.length; j++) {
+-                newGeometry.push(shiftCoords(feature.geometry[j], offset));
+-            }
+-        }
++        this._zoomInButton = this._createButton(className + '-icon ' + className + '-zoom-in', map.zoomIn.bind(map));
++        this._zoomOutButton = this._createButton(className + '-icon ' + className + '-zoom-out', map.zoomOut.bind(map));
++        this._compass = this._createButton(className + '-icon ' + className + '-compass', map.resetNorth.bind(map));
+ 
+-        newFeatures.push({
+-            geometry: newGeometry,
+-            type: type,
+-            tags: feature.tags,
+-            min: [feature.min[0] + offset, feature.min[1]],
+-            max: [feature.max[0] + offset, feature.max[1]]
+-        });
+-    }
++        this._compassArrow = DOM.create('div', 'arrow', this._compass);
+ 
+-    return newFeatures;
+-}
++        this._compass.addEventListener('mousedown', this._onCompassDown.bind(this));
++        this._onCompassMove = this._onCompassMove.bind(this);
++        this._onCompassUp = this._onCompassUp.bind(this);
+ 
+-function shiftCoords(points, offset) {
+-    var newPoints = [];
+-    newPoints.area = points.area;
+-    newPoints.dist = points.dist;
++        map.on('rotate', this._rotateCompassArrow.bind(this));
++        this._rotateCompassArrow();
+ 
+-    for (var i = 0; i < points.length; i++) {
+-        newPoints.push([points[i][0] + offset, points[i][1], points[i][2]]);
+-    }
+-    return newPoints;
+-}
++        this._el = map.getCanvasContainer();
+ 
+-},{"./clip":356}],363:[function(require,module,exports){
+-/**
+- * @fileoverview gl-matrix - High performance matrix and vector operations
+- * @author Brandon Jones
+- * @author Colin MacKenzie IV
+- * @version 2.3.2
+- */
++        return container;
++    },
+ 
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++    _onContextMenu: function(e) {
++        e.preventDefault();
++    },
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    _onCompassDown: function(e) {
++        if (e.button !== 0) return;
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++        DOM.disableDrag();
++        document.addEventListener('mousemove', this._onCompassMove);
++        document.addEventListener('mouseup', this._onCompassUp);
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
+-// END HEADER
++        this._el.dispatchEvent(copyMouseEvent(e));
++        e.stopPropagation();
++    },
+ 
+-exports.glMatrix = require("./gl-matrix/common.js");
+-exports.mat2 = require("./gl-matrix/mat2.js");
+-exports.mat2d = require("./gl-matrix/mat2d.js");
+-exports.mat3 = require("./gl-matrix/mat3.js");
+-exports.mat4 = require("./gl-matrix/mat4.js");
+-exports.quat = require("./gl-matrix/quat.js");
+-exports.vec2 = require("./gl-matrix/vec2.js");
+-exports.vec3 = require("./gl-matrix/vec3.js");
+-exports.vec4 = require("./gl-matrix/vec4.js");
+-},{"./gl-matrix/common.js":364,"./gl-matrix/mat2.js":365,"./gl-matrix/mat2d.js":366,"./gl-matrix/mat3.js":367,"./gl-matrix/mat4.js":368,"./gl-matrix/quat.js":369,"./gl-matrix/vec2.js":370,"./gl-matrix/vec3.js":371,"./gl-matrix/vec4.js":372}],364:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++    _onCompassMove: function(e) {
++        if (e.button !== 0) return;
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++        this._el.dispatchEvent(copyMouseEvent(e));
++        e.stopPropagation();
++    },
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    _onCompassUp: function(e) {
++        if (e.button !== 0) return;
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++        document.removeEventListener('mousemove', this._onCompassMove);
++        document.removeEventListener('mouseup', this._onCompassUp);
++        DOM.enableDrag();
+ 
+-/**
+- * @class Common utilities
+- * @name glMatrix
+- */
+-var glMatrix = {};
++        this._el.dispatchEvent(copyMouseEvent(e));
++        e.stopPropagation();
++    },
+ 
+-// Configuration Constants
+-glMatrix.EPSILON = 0.000001;
+-glMatrix.ARRAY_TYPE = (typeof Float32Array !== 'undefined') ? Float32Array : Array;
+-glMatrix.RANDOM = Math.random;
+-glMatrix.ENABLE_SIMD = false;
++    _createButton: function(className, fn) {
++        var a = DOM.create('button', className, this._container);
++        a.addEventListener('click', function() { fn(); });
++        return a;
++    },
+ 
+-// Capability detection
+-glMatrix.SIMD_AVAILABLE = (glMatrix.ARRAY_TYPE === Float32Array) && ('SIMD' in this);
+-glMatrix.USE_SIMD = glMatrix.ENABLE_SIMD && glMatrix.SIMD_AVAILABLE;
++    _rotateCompassArrow: function() {
++        var rotate = 'rotate(' + (this._map.transform.angle * (180 / Math.PI)) + 'deg)';
++        this._compassArrow.style.transform = rotate;
++    }
++});
+ 
+-/**
+- * Sets the type of array used when creating new vectors and matrices
+- *
+- * @param {Type} type Array type, such as Float32Array or Array
+- */
+-glMatrix.setMatrixArrayType = function(type) {
+-    glMatrix.ARRAY_TYPE = type;
++
++function copyMouseEvent(e) {
++    return new MouseEvent(e.type, {
++        button: 2,    // right click
++        buttons: 2,   // right click
++        bubbles: true,
++        cancelable: true,
++        detail: e.detail,
++        view: e.view,
++        screenX: e.screenX,
++        screenY: e.screenY,
++        clientX: e.clientX,
++        clientY: e.clientY,
++        movementX: e.movementX,
++        movementY: e.movementY,
++        ctrlKey: e.ctrlKey,
++        shiftKey: e.shiftKey,
++        altKey: e.altKey,
++        metaKey: e.metaKey
++    });
+ }
+ 
+-var degree = Math.PI / 180;
+ 
+-/**
+-* Convert Degree To Radian
+-*
+-* @param {Number} Angle in Degrees
+-*/
+-glMatrix.toRadian = function(a){
+-     return a * degree;
+-}
++},{"../../util/dom":351,"../../util/util":362,"./control":332}],335:[function(require,module,exports){
++'use strict';
++
++var DOM = require('../../util/dom'),
++    LngLatBounds = require('../../geo/lng_lat_bounds'),
++    util = require('../../util/util');
++
++module.exports = BoxZoomHandler;
+ 
+ /**
+- * Tests whether or not the arguments have approximately the same value, within an absolute
+- * or relative tolerance of glMatrix.EPSILON (an absolute tolerance is used for values less 
+- * than or equal to 1.0, and a relative tolerance is used for larger values)
+- * 
+- * @param {Number} a The first number to test.
+- * @param {Number} b The second number to test.
+- * @returns {Boolean} True if the numbers are approximately equal, false otherwise.
++ * The `BoxZoomHandler` allows a user to zoom the map to fit a bounding box.
++ * The bounding box is defined by holding `shift` while dragging the cursor.
++ * @class BoxZoomHandler
+  */
+-glMatrix.equals = function(a, b) {
+-	return Math.abs(a - b) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a), Math.abs(b));
+-}
++function BoxZoomHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
++    this._container = map.getContainer();
+ 
+-module.exports = glMatrix;
++    util.bindHandlers(this);
++}
+ 
+-},{}],365:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++BoxZoomHandler.prototype = {
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    _enabled: false,
++    _active: false,
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    /**
++     * Returns the current enabled/disabled state of the "box zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    /**
++     * Returns true if the "box zoom" interaction is currently active, i.e. currently being used.
++     * @returns {boolean} active state
++     */
++    isActive: function () {
++        return this._active;
++    },
+ 
+-var glMatrix = require("./common.js");
++    /**
++     * Enable the "box zoom" interaction.
++     * @example
++     *   map.boxZoom.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('mousedown', this._onMouseDown, false);
++        this._enabled = true;
++    },
+ 
+-/**
+- * @class 2x2 Matrix
+- * @name mat2
+- */
+-var mat2 = {};
++    /**
++     * Disable the "box zoom" interaction.
++     * @example
++     *   map.boxZoom.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('mousedown', this._onMouseDown);
++        this._enabled = false;
++    },
+ 
+-/**
+- * Creates a new identity mat2
+- *
+- * @returns {mat2} a new 2x2 matrix
+- */
+-mat2.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
+-};
++    _onMouseDown: function (e) {
++        if (!(e.shiftKey && e.button === 0)) return;
+ 
+-/**
+- * Creates a new mat2 initialized with values from an existing matrix
+- *
+- * @param {mat2} a matrix to clone
+- * @returns {mat2} a new 2x2 matrix
+- */
+-mat2.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
+-};
++        document.addEventListener('mousemove', this._onMouseMove, false);
++        document.addEventListener('keydown', this._onKeyDown, false);
++        document.addEventListener('mouseup', this._onMouseUp, false);
+ 
+-/**
+- * Copy the values from one mat2 to another
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
+-};
++        DOM.disableDrag();
++        this._startPos = DOM.mousePos(this._el, e);
++        this._active = true;
++    },
+ 
+-/**
+- * Set a mat2 to the identity matrix
+- *
+- * @param {mat2} out the receiving matrix
+- * @returns {mat2} out
+- */
+-mat2.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
+-};
++    _onMouseMove: function (e) {
++        var p0 = this._startPos,
++            p1 = DOM.mousePos(this._el, e);
+ 
+-/**
+- * Create a new mat2 with the given values
+- *
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m10 Component in column 1, row 0 position (index 2)
+- * @param {Number} m11 Component in column 1, row 1 position (index 3)
+- * @returns {mat2} out A new 2x2 matrix
+- */
+-mat2.fromValues = function(m00, m01, m10, m11) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m10;
+-    out[3] = m11;
+-    return out;
+-};
++        if (!this._box) {
++            this._box = DOM.create('div', 'mapboxgl-boxzoom', this._container);
++            this._container.classList.add('mapboxgl-crosshair');
++            this._fireEvent('boxzoomstart', e);
++        }
+ 
+-/**
+- * Set the components of a mat2 to the given values
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m10 Component in column 1, row 0 position (index 2)
+- * @param {Number} m11 Component in column 1, row 1 position (index 3)
+- * @returns {mat2} out
+- */
+-mat2.set = function(out, m00, m01, m10, m11) {
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m10;
+-    out[3] = m11;
+-    return out;
+-};
++        var minX = Math.min(p0.x, p1.x),
++            maxX = Math.max(p0.x, p1.x),
++            minY = Math.min(p0.y, p1.y),
++            maxY = Math.max(p0.y, p1.y);
+ 
++        DOM.setTransform(this._box, 'translate(' + minX + 'px,' + minY + 'px)');
+ 
+-/**
+- * Transpose the values of a mat2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.transpose = function(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a1 = a[1];
+-        out[1] = a[2];
+-        out[2] = a1;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[2];
+-        out[2] = a[1];
+-        out[3] = a[3];
+-    }
+-    
+-    return out;
+-};
++        this._box.style.width = (maxX - minX) + 'px';
++        this._box.style.height = (maxY - minY) + 'px';
++    },
+ 
+-/**
+- * Inverts a mat2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.invert = function(out, a) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++    _onMouseUp: function (e) {
++        if (e.button !== 0) return;
+ 
+-        // Calculate the determinant
+-        det = a0 * a3 - a2 * a1;
++        var p0 = this._startPos,
++            p1 = DOM.mousePos(this._el, e),
++            bounds = new LngLatBounds(this._map.unproject(p0), this._map.unproject(p1));
+ 
+-    if (!det) {
+-        return null;
+-    }
+-    det = 1.0 / det;
+-    
+-    out[0] =  a3 * det;
+-    out[1] = -a1 * det;
+-    out[2] = -a2 * det;
+-    out[3] =  a0 * det;
++        this._finish();
+ 
+-    return out;
+-};
++        if (p0.x === p1.x && p0.y === p1.y) {
++            this._fireEvent('boxzoomcancel', e);
++        } else {
++            this._map
++                .fitBounds(bounds, {linear: true})
++                .fire('boxzoomend', { originalEvent: e, boxZoomBounds: bounds });
++        }
++    },
+ 
+-/**
+- * Calculates the adjugate of a mat2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.adjoint = function(out, a) {
+-    // Caching this value is nessecary if out == a
+-    var a0 = a[0];
+-    out[0] =  a[3];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    out[3] =  a0;
++    _onKeyDown: function (e) {
++        if (e.keyCode === 27) {
++            this._finish();
++            this._fireEvent('boxzoomcancel', e);
++        }
++    },
+ 
+-    return out;
+-};
++    _finish: function () {
++        this._active = false;
+ 
+-/**
+- * Calculates the determinant of a mat2
+- *
+- * @param {mat2} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-mat2.determinant = function (a) {
+-    return a[0] * a[3] - a[2] * a[1];
+-};
++        document.removeEventListener('mousemove', this._onMouseMove, false);
++        document.removeEventListener('keydown', this._onKeyDown, false);
++        document.removeEventListener('mouseup', this._onMouseUp, false);
+ 
+-/**
+- * Multiplies two mat2's
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @returns {mat2} out
+- */
+-mat2.multiply = function (out, a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    out[0] = a0 * b0 + a2 * b1;
+-    out[1] = a1 * b0 + a3 * b1;
+-    out[2] = a0 * b2 + a2 * b3;
+-    out[3] = a1 * b2 + a3 * b3;
+-    return out;
+-};
++        this._container.classList.remove('mapboxgl-crosshair');
+ 
+-/**
+- * Alias for {@link mat2.multiply}
+- * @function
+- */
+-mat2.mul = mat2.multiply;
++        if (this._box) {
++            this._box.parentNode.removeChild(this._box);
++            this._box = null;
++        }
+ 
+-/**
+- * Rotates a mat2 by the given angle
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2} out
+- */
+-mat2.rotate = function (out, a, rad) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+-        s = Math.sin(rad),
+-        c = Math.cos(rad);
+-    out[0] = a0 *  c + a2 * s;
+-    out[1] = a1 *  c + a3 * s;
+-    out[2] = a0 * -s + a2 * c;
+-    out[3] = a1 * -s + a3 * c;
+-    return out;
+-};
++        DOM.enableDrag();
++    },
+ 
+-/**
+- * Scales the mat2 by the dimensions in the given vec2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the matrix to rotate
+- * @param {vec2} v the vec2 to scale the matrix by
+- * @returns {mat2} out
+- **/
+-mat2.scale = function(out, a, v) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+-        v0 = v[0], v1 = v[1];
+-    out[0] = a0 * v0;
+-    out[1] = a1 * v0;
+-    out[2] = a2 * v1;
+-    out[3] = a3 * v1;
+-    return out;
++    _fireEvent: function (type, e) {
++        return this._map.fire(type, { originalEvent: e });
++    }
+ };
+ 
+-/**
+- * Creates a matrix from a given angle
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2.identity(dest);
+- *     mat2.rotate(dest, dest, rad);
+- *
+- * @param {mat2} out mat2 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2} out
+- */
+-mat2.fromRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
+-    out[0] = c;
+-    out[1] = s;
+-    out[2] = -s;
+-    out[3] = c;
+-    return out;
+-}
+ 
+ /**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2.identity(dest);
+- *     mat2.scale(dest, dest, vec);
++ * Boxzoom start event. This event is emitted at the start of a box zoom interaction.
+  *
+- * @param {mat2} out mat2 receiving operation result
+- * @param {vec2} v Scaling vector
+- * @returns {mat2} out
++ * @event boxzoomstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = v[1];
+-    return out;
+-}
+ 
+ /**
+- * Returns a string representation of a mat2
++ * Boxzoom end event. This event is emitted at the end of a box zoom interaction
+  *
+- * @param {mat2} mat matrix to represent as a string
+- * @returns {String} string representation of the matrix
++ * @event boxzoomend
++ * @memberof Map
++ * @instance
++ * @type {Object}
++ * @property {Event} originalEvent the original DOM event
++ * @property {LngLatBounds} boxZoomBounds the bounds of the box zoom target
+  */
+-mat2.str = function (a) {
+-    return 'mat2(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+-};
+ 
+ /**
+- * Returns Frobenius norm of a mat2
++ * Boxzoom cancel event.  This event is emitted when the user cancels a box zoom interaction,
++ *   or when the box zoom does not meet the minimum size threshold.
+  *
+- * @param {mat2} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
++ * @event boxzoomcancel
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2.frob = function (a) {
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2)))
+-};
+ 
+-/**
+- * Returns L, D and U matrices (Lower triangular, Diagonal and Upper triangular) by factorizing the input matrix
+- * @param {mat2} L the lower triangular matrix 
+- * @param {mat2} D the diagonal matrix 
+- * @param {mat2} U the upper triangular matrix 
+- * @param {mat2} a the input matrix to factorize
+- */
++},{"../../geo/lng_lat_bounds":270,"../../util/dom":351,"../../util/util":362}],336:[function(require,module,exports){
++'use strict';
+ 
+-mat2.LDU = function (L, D, U, a) { 
+-    L[2] = a[2]/a[0]; 
+-    U[0] = a[0]; 
+-    U[1] = a[1]; 
+-    U[3] = a[3] - L[2] * U[1]; 
+-    return [L, D, U];       
+-}; 
++module.exports = DoubleClickZoomHandler;
+ 
+ /**
+- * Adds two mat2's
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @returns {mat2} out
++ * The `DoubleClickZoomHandler` allows a user to zoom the map around point by
++ * double clicking.
++ * @class DoubleClickZoomHandler
+  */
+-mat2.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    return out;
+-};
++function DoubleClickZoomHandler(map) {
++    this._map = map;
++    this._onDblClick = this._onDblClick.bind(this);
++}
+ 
+-/**
+- * Subtracts matrix b from matrix a
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @returns {mat2} out
+- */
+-mat2.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    return out;
+-};
++DoubleClickZoomHandler.prototype = {
+ 
+-/**
+- * Alias for {@link mat2.subtract}
+- * @function
+- */
+-mat2.sub = mat2.subtract;
++    _enabled: false,
+ 
+-/**
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {mat2} a The first matrix.
+- * @param {mat2} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat2.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
+-};
++    /**
++     * Returns the current enabled/disabled state of the "double click to zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-/**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
+- *
+- * @param {mat2} a The first matrix.
+- * @param {mat2} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat2.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
+-};
++    /**
++     * Enable the "double click to zoom" interaction.
++     * @example
++     * map.doubleClickZoom.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._map.on('dblclick', this._onDblClick);
++        this._enabled = true;
++    },
+ 
+-/**
+- * Multiply each element of the matrix by a scalar.
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat2} out
+- */
+-mat2.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    return out;
++    /**
++     * Disable the "double click to zoom" interaction.
++     * @example
++     * map.doubleClickZoom.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._map.off('dblclick', this._onDblClick);
++        this._enabled = false;
++    },
++
++    _onDblClick: function (e) {
++        this._map.zoomTo(this._map.getZoom() +
++            (e.originalEvent.shiftKey ? -1 : 1), {around: e.lngLat});
++    }
+ };
+ 
++},{}],337:[function(require,module,exports){
++'use strict';
++
++var DOM = require('../../util/dom'),
++    util = require('../../util/util');
++
++module.exports = DragPanHandler;
++
++var inertiaLinearity = 0.3,
++    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
++    inertiaMaxSpeed = 1400, // px/s
++    inertiaDeceleration = 2500; // px/s^2
++
++
+ /**
+- * Adds two mat2's after multiplying each element of the second operand by a scalar value.
+- *
+- * @param {mat2} out the receiving vector
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat2} out
++ * The `DragPanHandler` allows a user to pan the map by clicking and dragging
++ * the cursor.
++ * @class DragPanHandler
+  */
+-mat2.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    return out;
+-};
++function DragPanHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-module.exports = mat2;
++    util.bindHandlers(this);
++}
+ 
+-},{"./common.js":364}],366:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++DragPanHandler.prototype = {
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    _enabled: false,
++    _active: false,
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    /**
++     * Returns the current enabled/disabled state of the "drag to pan" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    /**
++     * Returns true if the "drag to pan" interaction is currently active, i.e. currently being used.
++     * @returns {boolean} active state
++     */
++    isActive: function () {
++        return this._active;
++    },
+ 
+-var glMatrix = require("./common.js");
++    /**
++     * Enable the "drag to pan" interaction.
++     * @example
++     * map.dragPan.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('mousedown', this._onDown);
++        this._el.addEventListener('touchstart', this._onDown);
++        this._enabled = true;
++    },
+ 
+-/**
+- * @class 2x3 Matrix
+- * @name mat2d
+- * 
+- * @description 
+- * A mat2d contains six elements defined as:
+- * <pre>
+- * [a, c, tx,
+- *  b, d, ty]
+- * </pre>
+- * This is a short form for the 3x3 matrix:
+- * <pre>
+- * [a, c, tx,
+- *  b, d, ty,
+- *  0, 0, 1]
+- * </pre>
+- * The last row is ignored so the array is shorter and operations are faster.
+- */
+-var mat2d = {};
++    /**
++     * Disable the "drag to pan" interaction.
++     * @example
++     * map.dragPan.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('mousedown', this._onDown);
++        this._el.removeEventListener('touchstart', this._onDown);
++        this._enabled = false;
++    },
+ 
+-/**
+- * Creates a new identity mat2d
+- *
+- * @returns {mat2d} a new 2x3 matrix
+- */
+-mat2d.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(6);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
+-};
++    _onDown: function (e) {
++        if (this._ignoreEvent(e)) return;
++        if (this.isActive()) return;
+ 
+-/**
+- * Creates a new mat2d initialized with values from an existing matrix
+- *
+- * @param {mat2d} a matrix to clone
+- * @returns {mat2d} a new 2x3 matrix
+- */
+-mat2d.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(6);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    return out;
+-};
++        if (e.touches) {
++            document.addEventListener('touchmove', this._onMove);
++            document.addEventListener('touchend', this._onTouchEnd);
++        } else {
++            document.addEventListener('mousemove', this._onMove);
++            document.addEventListener('mouseup', this._onMouseUp);
++        }
+ 
+-/**
+- * Copy the values from one mat2d to another
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the source matrix
+- * @returns {mat2d} out
+- */
+-mat2d.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    return out;
+-};
++        this._active = false;
++        this._startPos = this._pos = DOM.mousePos(this._el, e);
++        this._inertia = [[Date.now(), this._pos]];
++    },
+ 
+-/**
+- * Set a mat2d to the identity matrix
+- *
+- * @param {mat2d} out the receiving matrix
+- * @returns {mat2d} out
+- */
+-mat2d.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
+-};
++    _onMove: function (e) {
++        if (this._ignoreEvent(e)) return;
+ 
+-/**
+- * Create a new mat2d with the given values
+- *
+- * @param {Number} a Component A (index 0)
+- * @param {Number} b Component B (index 1)
+- * @param {Number} c Component C (index 2)
+- * @param {Number} d Component D (index 3)
+- * @param {Number} tx Component TX (index 4)
+- * @param {Number} ty Component TY (index 5)
+- * @returns {mat2d} A new mat2d
+- */
+-mat2d.fromValues = function(a, b, c, d, tx, ty) {
+-    var out = new glMatrix.ARRAY_TYPE(6);
+-    out[0] = a;
+-    out[1] = b;
+-    out[2] = c;
+-    out[3] = d;
+-    out[4] = tx;
+-    out[5] = ty;
+-    return out;
+-};
++        if (!this.isActive()) {
++            this._active = true;
++            this._fireEvent('dragstart', e);
++            this._fireEvent('movestart', e);
++        }
+ 
+-/**
+- * Set the components of a mat2d to the given values
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {Number} a Component A (index 0)
+- * @param {Number} b Component B (index 1)
+- * @param {Number} c Component C (index 2)
+- * @param {Number} d Component D (index 3)
+- * @param {Number} tx Component TX (index 4)
+- * @param {Number} ty Component TY (index 5)
+- * @returns {mat2d} out
+- */
+-mat2d.set = function(out, a, b, c, d, tx, ty) {
+-    out[0] = a;
+-    out[1] = b;
+-    out[2] = c;
+-    out[3] = d;
+-    out[4] = tx;
+-    out[5] = ty;
+-    return out;
+-};
++        var pos = DOM.mousePos(this._el, e),
++            map = this._map;
++
++        map.stop();
++        this._drainInertiaBuffer();
++        this._inertia.push([Date.now(), pos]);
++
++        map.transform.setLocationAtPoint(map.transform.pointLocation(this._pos), pos);
++
++        this._fireEvent('drag', e);
++        this._fireEvent('move', e);
++
++        this._pos = pos;
++
++        e.preventDefault();
++    },
++
++    _onUp: function (e) {
++        if (!this.isActive()) return;
++
++        this._active = false;
++        this._fireEvent('dragend', e);
++        this._drainInertiaBuffer();
++
++        var finish = function() {
++            this._fireEvent('moveend', e);
++        }.bind(this);
++
++        var inertia = this._inertia;
++        if (inertia.length < 2) {
++            finish();
++            return;
++        }
++
++        var last = inertia[inertia.length - 1],
++            first = inertia[0],
++            flingOffset = last[1].sub(first[1]),
++            flingDuration = (last[0] - first[0]) / 1000;
++
++        if (flingDuration === 0 || last[1].equals(first[1])) {
++            finish();
++            return;
++        }
++
++        // calculate px/s velocity & adjust for increased initial animation speed when easing out
++        var velocity = flingOffset.mult(inertiaLinearity / flingDuration),
++            speed = velocity.mag(); // px/s
++
++        if (speed > inertiaMaxSpeed) {
++            speed = inertiaMaxSpeed;
++            velocity._unit()._mult(speed);
++        }
++
++        var duration = speed / (inertiaDeceleration * inertiaLinearity),
++            offset = velocity.mult(-duration / 2);
++
++        this._map.panBy(offset, {
++            duration: duration * 1000,
++            easing: inertiaEasing,
++            noMoveStart: true
++        }, { originalEvent: e });
++    },
++
++    _onMouseUp: function (e) {
++        if (this._ignoreEvent(e)) return;
++        this._onUp(e);
++        document.removeEventListener('mousemove', this._onMove);
++        document.removeEventListener('mouseup', this._onMouseUp);
++    },
++
++    _onTouchEnd: function (e) {
++        if (this._ignoreEvent(e)) return;
++        this._onUp(e);
++        document.removeEventListener('touchmove', this._onMove);
++        document.removeEventListener('touchend', this._onTouchEnd);
++    },
++
++    _fireEvent: function (type, e) {
++        return this._map.fire(type, { originalEvent: e });
++    },
+ 
+-/**
+- * Inverts a mat2d
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the source matrix
+- * @returns {mat2d} out
+- */
+-mat2d.invert = function(out, a) {
+-    var aa = a[0], ab = a[1], ac = a[2], ad = a[3],
+-        atx = a[4], aty = a[5];
++    _ignoreEvent: function (e) {
++        var map = this._map;
+ 
+-    var det = aa * ad - ab * ac;
+-    if(!det){
+-        return null;
+-    }
+-    det = 1.0 / det;
++        if (map.boxZoom && map.boxZoom.isActive()) return true;
++        if (map.dragRotate && map.dragRotate.isActive()) return true;
++        if (e.touches) {
++            return (e.touches.length > 1);
++        } else {
++            if (e.ctrlKey) return true;
++            var buttons = 1,  // left button
++                button = 0;   // left button
++            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
++        }
++    },
+ 
+-    out[0] = ad * det;
+-    out[1] = -ab * det;
+-    out[2] = -ac * det;
+-    out[3] = aa * det;
+-    out[4] = (ac * aty - ad * atx) * det;
+-    out[5] = (ab * atx - aa * aty) * det;
+-    return out;
+-};
++    _drainInertiaBuffer: function () {
++        var inertia = this._inertia,
++            now = Date.now(),
++            cutoff = 160;   // msec
+ 
+-/**
+- * Calculates the determinant of a mat2d
+- *
+- * @param {mat2d} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-mat2d.determinant = function (a) {
+-    return a[0] * a[3] - a[1] * a[2];
++        while (inertia.length > 0 && now - inertia[0][0] > cutoff) inertia.shift();
++    }
+ };
+ 
++
+ /**
+- * Multiplies two mat2d's
++ * Drag start event. This event is emitted at the start of a user-initiated pan interaction.
+  *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @returns {mat2d} out
++ * @event dragstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2d.multiply = function (out, a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
+-    out[0] = a0 * b0 + a2 * b1;
+-    out[1] = a1 * b0 + a3 * b1;
+-    out[2] = a0 * b2 + a2 * b3;
+-    out[3] = a1 * b2 + a3 * b3;
+-    out[4] = a0 * b4 + a2 * b5 + a4;
+-    out[5] = a1 * b4 + a3 * b5 + a5;
+-    return out;
+-};
+ 
+ /**
+- * Alias for {@link mat2d.multiply}
+- * @function
++ * Drag event. This event is emitted repeatedly during a user-initiated pan interaction.
++ *
++ * @event drag
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2d.mul = mat2d.multiply;
+ 
+ /**
+- * Rotates a mat2d by the given angle
++ * Drag end event. This event is emitted at the end of a user-initiated pan interaction.
+  *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2d} out
++ * @event dragend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2d.rotate = function (out, a, rad) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        s = Math.sin(rad),
+-        c = Math.cos(rad);
+-    out[0] = a0 *  c + a2 * s;
+-    out[1] = a1 *  c + a3 * s;
+-    out[2] = a0 * -s + a2 * c;
+-    out[3] = a1 * -s + a3 * c;
+-    out[4] = a4;
+-    out[5] = a5;
+-    return out;
+-};
+ 
+-/**
+- * Scales the mat2d by the dimensions in the given vec2
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to translate
+- * @param {vec2} v the vec2 to scale the matrix by
+- * @returns {mat2d} out
+- **/
+-mat2d.scale = function(out, a, v) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        v0 = v[0], v1 = v[1];
+-    out[0] = a0 * v0;
+-    out[1] = a1 * v0;
+-    out[2] = a2 * v1;
+-    out[3] = a3 * v1;
+-    out[4] = a4;
+-    out[5] = a5;
+-    return out;
+-};
++},{"../../util/dom":351,"../../util/util":362}],338:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Translates the mat2d by the dimensions in the given vec2
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to translate
+- * @param {vec2} v the vec2 to translate the matrix by
+- * @returns {mat2d} out
+- **/
+-mat2d.translate = function(out, a, v) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        v0 = v[0], v1 = v[1];
+-    out[0] = a0;
+-    out[1] = a1;
+-    out[2] = a2;
+-    out[3] = a3;
+-    out[4] = a0 * v0 + a2 * v1 + a4;
+-    out[5] = a1 * v0 + a3 * v1 + a5;
+-    return out;
+-};
++var DOM = require('../../util/dom'),
++    Point = require('point-geometry'),
++    util = require('../../util/util');
+ 
+-/**
+- * Creates a matrix from a given angle
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2d.identity(dest);
+- *     mat2d.rotate(dest, dest, rad);
+- *
+- * @param {mat2d} out mat2d receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2d} out
+- */
+-mat2d.fromRotation = function(out, rad) {
+-    var s = Math.sin(rad), c = Math.cos(rad);
+-    out[0] = c;
+-    out[1] = s;
+-    out[2] = -s;
+-    out[3] = c;
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
+-}
++module.exports = DragRotateHandler;
++
++var inertiaLinearity = 0.25,
++    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
++    inertiaMaxSpeed = 180, // deg/s
++    inertiaDeceleration = 720; // deg/s^2
+ 
+-/**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2d.identity(dest);
+- *     mat2d.scale(dest, dest, vec);
+- *
+- * @param {mat2d} out mat2d receiving operation result
+- * @param {vec2} v Scaling vector
+- * @returns {mat2d} out
+- */
+-mat2d.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = v[1];
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
+-}
+ 
+ /**
+- * Creates a matrix from a vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2d.identity(dest);
+- *     mat2d.translate(dest, dest, vec);
+- *
+- * @param {mat2d} out mat2d receiving operation result
+- * @param {vec2} v Translation vector
+- * @returns {mat2d} out
++ * The `DragRotateHandler` allows a user to rotate the map by clicking and
++ * dragging the cursor while holding the right mouse button or the `ctrl` key.
++ * @class DragRotateHandler
+  */
+-mat2d.fromTranslation = function(out, v) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    out[4] = v[0];
+-    out[5] = v[1];
+-    return out;
++function DragRotateHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
++
++    util.bindHandlers(this);
+ }
+ 
+-/**
+- * Returns a string representation of a mat2d
+- *
+- * @param {mat2d} a matrix to represent as a string
+- * @returns {String} string representation of the matrix
+- */
+-mat2d.str = function (a) {
+-    return 'mat2d(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
+-                    a[3] + ', ' + a[4] + ', ' + a[5] + ')';
+-};
++DragRotateHandler.prototype = {
+ 
+-/**
+- * Returns Frobenius norm of a mat2d
+- *
+- * @param {mat2d} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
+- */
+-mat2d.frob = function (a) { 
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + 1))
+-}; 
++    _enabled: false,
++    _active: false,
+ 
+-/**
+- * Adds two mat2d's
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @returns {mat2d} out
+- */
+-mat2d.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    out[4] = a[4] + b[4];
+-    out[5] = a[5] + b[5];
+-    return out;
+-};
++    /**
++     * Returns the current enabled/disabled state of the "drag to rotate" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-/**
+- * Subtracts matrix b from matrix a
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @returns {mat2d} out
+- */
+-mat2d.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    out[4] = a[4] - b[4];
+-    out[5] = a[5] - b[5];
+-    return out;
+-};
++    /**
++     * Returns true if the "drag to rotate" interaction is currently active, i.e. currently being used.
++     * @returns {boolean} active state
++     */
++    isActive: function () {
++        return this._active;
++    },
+ 
+-/**
+- * Alias for {@link mat2d.subtract}
+- * @function
+- */
+-mat2d.sub = mat2d.subtract;
++    /**
++     * Enable the "drag to rotate" interaction.
++     * @example
++     * map.dragRotate.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('mousedown', this._onDown);
++        this._enabled = true;
++    },
+ 
+-/**
+- * Multiply each element of the matrix by a scalar.
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat2d} out
+- */
+-mat2d.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    out[4] = a[4] * b;
+-    out[5] = a[5] * b;
+-    return out;
+-};
++    /**
++     * Disable the "drag to rotate" interaction.
++     * @example
++     * map.dragRotate.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('mousedown', this._onDown);
++        this._enabled = false;
++    },
+ 
+-/**
+- * Adds two mat2d's after multiplying each element of the second operand by a scalar value.
+- *
+- * @param {mat2d} out the receiving vector
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat2d} out
+- */
+-mat2d.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    out[4] = a[4] + (b[4] * scale);
+-    out[5] = a[5] + (b[5] * scale);
+-    return out;
+-};
++    _onDown: function (e) {
++        if (this._ignoreEvent(e)) return;
++        if (this.isActive()) return;
+ 
+-/**
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {mat2d} a The first matrix.
+- * @param {mat2d} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat2d.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5];
+-};
++        document.addEventListener('mousemove', this._onMove);
++        document.addEventListener('mouseup', this._onUp);
+ 
+-/**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
+- *
+- * @param {mat2d} a The first matrix.
+- * @param {mat2d} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat2d.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
+-            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
+-            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)));
+-};
++        this._active = false;
++        this._inertia = [[Date.now(), this._map.getBearing()]];
++        this._startPos = this._pos = DOM.mousePos(this._el, e);
++        this._center = this._map.transform.centerPoint;  // Center of rotation
+ 
+-module.exports = mat2d;
++        // If the first click was too close to the center, move the center of rotation by 200 pixels
++        // in the direction of the click.
++        var startToCenter = this._startPos.sub(this._center),
++            startToCenterDist = startToCenter.mag();
+ 
+-},{"./common.js":364}],367:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++        if (startToCenterDist < 200) {
++            this._center = this._startPos.add(new Point(-200, 0)._rotate(startToCenter.angle()));
++        }
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++        e.preventDefault();
++    },
++
++    _onMove: function (e) {
++        if (this._ignoreEvent(e)) return;
++
++        if (!this.isActive()) {
++            this._active = true;
++            this._fireEvent('rotatestart', e);
++            this._fireEvent('movestart', e);
++        }
++
++        var map = this._map;
++        map.stop();
++
++        var p1 = this._pos,
++            p2 = DOM.mousePos(this._el, e),
++            center = this._center,
++            bearingDiff = p1.sub(center).angleWith(p2.sub(center)) / Math.PI * 180,
++            bearing = map.getBearing() - bearingDiff,
++            inertia = this._inertia,
++            last = inertia[inertia.length - 1];
++
++        this._drainInertiaBuffer();
++        inertia.push([Date.now(), map._normalizeBearing(bearing, last[1])]);
++
++        map.transform.bearing = bearing;
++
++        this._fireEvent('rotate', e);
++        this._fireEvent('move', e);
++
++        this._pos = p2;
++    },
++
++    _onUp: function (e) {
++        if (this._ignoreEvent(e)) return;
++        document.removeEventListener('mousemove', this._onMove);
++        document.removeEventListener('mouseup', this._onUp);
++
++        if (!this.isActive()) return;
++
++        this._active = false;
++        this._fireEvent('rotateend', e);
++        this._drainInertiaBuffer();
++
++        var map = this._map,
++            mapBearing = map.getBearing(),
++            inertia = this._inertia;
++
++        var finish = function() {
++            if (Math.abs(mapBearing) < map.options.bearingSnap) {
++                map.resetNorth({noMoveStart: true}, { originalEvent: e });
++            } else {
++                this._fireEvent('moveend', e);
++            }
++        }.bind(this);
++
++        if (inertia.length < 2) {
++            finish();
++            return;
++        }
++
++        var first = inertia[0],
++            last = inertia[inertia.length - 1],
++            previous = inertia[inertia.length - 2],
++            bearing = map._normalizeBearing(mapBearing, previous[1]),
++            flingDiff = last[1] - first[1],
++            sign = flingDiff < 0 ? -1 : 1,
++            flingDuration = (last[0] - first[0]) / 1000;
++
++        if (flingDiff === 0 || flingDuration === 0) {
++            finish();
++            return;
++        }
++
++        var speed = Math.abs(flingDiff * (inertiaLinearity / flingDuration));  // deg/s
++        if (speed > inertiaMaxSpeed) {
++            speed = inertiaMaxSpeed;
++        }
++
++        var duration = speed / (inertiaDeceleration * inertiaLinearity),
++            offset = sign * speed * (duration / 2);
++
++        bearing += offset;
++
++        if (Math.abs(map._normalizeBearing(bearing, 0)) < map.options.bearingSnap) {
++            bearing = map._normalizeBearing(0, bearing);
++        }
++
++        map.rotateTo(bearing, {
++            duration: duration * 1000,
++            easing: inertiaEasing,
++            noMoveStart: true
++        }, { originalEvent: e });
++    },
++
++    _fireEvent: function (type, e) {
++        return this._map.fire(type, { originalEvent: e });
++    },
++
++    _ignoreEvent: function (e) {
++        var map = this._map;
++
++        if (map.boxZoom && map.boxZoom.isActive()) return true;
++        if (map.dragPan && map.dragPan.isActive()) return true;
++        if (e.touches) {
++            return (e.touches.length > 1);
++        } else {
++            var buttons = (e.ctrlKey ? 1 : 2),  // ? ctrl+left button : right button
++                button = (e.ctrlKey ? 0 : 2);   // ? ctrl+left button : right button
++            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
++        }
++    },
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    _drainInertiaBuffer: function () {
++        var inertia = this._inertia,
++            now = Date.now(),
++            cutoff = 160;   //msec
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++        while (inertia.length > 0 && now - inertia[0][0] > cutoff)
++            inertia.shift();
++    }
+ 
+-var glMatrix = require("./common.js");
++};
+ 
+-/**
+- * @class 3x3 Matrix
+- * @name mat3
+- */
+-var mat3 = {};
+ 
+ /**
+- * Creates a new identity mat3
++ * Rotate start event. This event is emitted at the start of a user-initiated rotate interaction.
+  *
+- * @returns {mat3} a new 3x3 matrix
++ * @event rotatestart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat3.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(9);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 1;
+-    out[5] = 0;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
+-};
+ 
+ /**
+- * Copies the upper-left 3x3 values into the given mat3.
++ * Rotate event. This event is emitted repeatedly during a user-initiated rotate interaction.
+  *
+- * @param {mat3} out the receiving 3x3 matrix
+- * @param {mat4} a   the source 4x4 matrix
+- * @returns {mat3} out
++ * @event rotate
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat3.fromMat4 = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[4];
+-    out[4] = a[5];
+-    out[5] = a[6];
+-    out[6] = a[8];
+-    out[7] = a[9];
+-    out[8] = a[10];
+-    return out;
+-};
+ 
+ /**
+- * Creates a new mat3 initialized with values from an existing matrix
++ * Rotate end event. This event is emitted at the end of a user-initiated rotate interaction.
+  *
+- * @param {mat3} a matrix to clone
+- * @returns {mat3} a new 3x3 matrix
++ * @event rotateend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat3.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(9);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    return out;
+-};
+ 
+-/**
+- * Copy the values from one mat3 to another
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
+- */
+-mat3.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    return out;
+-};
++},{"../../util/dom":351,"../../util/util":362,"point-geometry":400}],339:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Create a new mat3 with the given values
+- *
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m10 Component in column 1, row 0 position (index 3)
+- * @param {Number} m11 Component in column 1, row 1 position (index 4)
+- * @param {Number} m12 Component in column 1, row 2 position (index 5)
+- * @param {Number} m20 Component in column 2, row 0 position (index 6)
+- * @param {Number} m21 Component in column 2, row 1 position (index 7)
+- * @param {Number} m22 Component in column 2, row 2 position (index 8)
+- * @returns {mat3} A new mat3
+- */
+-mat3.fromValues = function(m00, m01, m02, m10, m11, m12, m20, m21, m22) {
+-    var out = new glMatrix.ARRAY_TYPE(9);
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m10;
+-    out[4] = m11;
+-    out[5] = m12;
+-    out[6] = m20;
+-    out[7] = m21;
+-    out[8] = m22;
+-    return out;
+-};
++module.exports = KeyboardHandler;
+ 
+-/**
+- * Set the components of a mat3 to the given values
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m10 Component in column 1, row 0 position (index 3)
+- * @param {Number} m11 Component in column 1, row 1 position (index 4)
+- * @param {Number} m12 Component in column 1, row 2 position (index 5)
+- * @param {Number} m20 Component in column 2, row 0 position (index 6)
+- * @param {Number} m21 Component in column 2, row 1 position (index 7)
+- * @param {Number} m22 Component in column 2, row 2 position (index 8)
+- * @returns {mat3} out
+- */
+-mat3.set = function(out, m00, m01, m02, m10, m11, m12, m20, m21, m22) {
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m10;
+-    out[4] = m11;
+-    out[5] = m12;
+-    out[6] = m20;
+-    out[7] = m21;
+-    out[8] = m22;
+-    return out;
+-};
+ 
+-/**
+- * Set a mat3 to the identity matrix
+- *
+- * @param {mat3} out the receiving matrix
+- * @returns {mat3} out
+- */
+-mat3.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 1;
+-    out[5] = 0;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
+-};
++var panDelta = 80,
++    rotateDelta = 2,
++    pitchDelta = 5;
+ 
+ /**
+- * Transpose the values of a mat3
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
++ * The `KeyboardHandler` allows a user to zoom, rotate, and pan the map using
++ * following keyboard shortcuts:
++ *  * `=` / `+`: increase zoom level by 1
++ *  * `Shift-=` / `Shift-+`: increase zoom level by 2
++ *  * `-`: decrease zoom level by 1
++ *  * `Shift--`: decrease zoom level by 2
++ *  * Arrow keys: pan by 80 pixels
++ *  * `Shift+⇢`: increase rotation by 2 degrees
++ *  * `Shift+⇠`: decrease rotation by 2 degrees
++ *  * `Shift+⇡`: increase pitch by 5 degrees
++ *  * `Shift+⇣`: decrease pitch by 5 degrees
++ * @class KeyboardHandler
+  */
+-mat3.transpose = function(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a01 = a[1], a02 = a[2], a12 = a[5];
+-        out[1] = a[3];
+-        out[2] = a[6];
+-        out[3] = a01;
+-        out[5] = a[7];
+-        out[6] = a02;
+-        out[7] = a12;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[3];
+-        out[2] = a[6];
+-        out[3] = a[1];
+-        out[4] = a[4];
+-        out[5] = a[7];
+-        out[6] = a[2];
+-        out[7] = a[5];
+-        out[8] = a[8];
++function KeyboardHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
++
++    this._onKeyDown = this._onKeyDown.bind(this);
++}
++
++KeyboardHandler.prototype = {
++
++    _enabled: false,
++
++    /**
++     * Returns the current enabled/disabled state of keyboard interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
++
++    /**
++     * Enable the ability to interact with the map using keyboard input.
++     * @example
++     * map.keyboard.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('keydown', this._onKeyDown, false);
++        this._enabled = true;
++    },
++
++    /**
++     * Disable the ability to interact with the map using keyboard input.
++     * @example
++     * map.keyboard.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('keydown', this._onKeyDown);
++        this._enabled = false;
++    },
++
++    _onKeyDown: function (e) {
++        if (e.altKey || e.ctrlKey || e.metaKey) return;
++
++        var map = this._map,
++            eventData = { originalEvent: e };
++
++        switch (e.keyCode) {
++        case 61:
++        case 107:
++        case 171:
++        case 187:
++            map.zoomTo(Math.round(map.getZoom()) + (e.shiftKey ? 2 : 1), eventData);
++            break;
++
++        case 189:
++        case 109:
++        case 173:
++            map.zoomTo(Math.round(map.getZoom()) - (e.shiftKey ? 2 : 1), eventData);
++            break;
++
++        case 37:
++            if (e.shiftKey) {
++                map.easeTo({ bearing: map.getBearing() - rotateDelta }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([-panDelta, 0], eventData);
++            }
++            break;
++
++        case 39:
++            if (e.shiftKey) {
++                map.easeTo({ bearing: map.getBearing() + rotateDelta }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([panDelta, 0], eventData);
++            }
++            break;
++
++        case 38:
++            if (e.shiftKey) {
++                map.easeTo({ pitch: map.getPitch() + pitchDelta }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([0, -panDelta], eventData);
++            }
++            break;
++
++        case 40:
++            if (e.shiftKey) {
++                map.easeTo({ pitch: Math.max(map.getPitch() - pitchDelta, 0) }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([0, panDelta], eventData);
++            }
++            break;
++        }
+     }
+-    
+-    return out;
+ };
+ 
++},{}],340:[function(require,module,exports){
++'use strict';
++
++var DOM = require('../../util/dom'),
++    browser = require('../../util/browser'),
++    util = require('../../util/util');
++
++module.exports = ScrollZoomHandler;
++
++
++var ua = typeof navigator !== 'undefined' ? navigator.userAgent.toLowerCase() : '',
++    firefox = ua.indexOf('firefox') !== -1,
++    safari = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') === -1;
++
++
+ /**
+- * Inverts a mat3
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
++ * The `ScrollZoomHandler` allows a user to zoom the map by scrolling.
++ * @class ScrollZoomHandler
+  */
+-mat3.invert = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
++function ScrollZoomHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-        b01 = a22 * a11 - a12 * a21,
+-        b11 = -a22 * a10 + a12 * a20,
+-        b21 = a21 * a10 - a11 * a20,
++    util.bindHandlers(this);
++}
+ 
+-        // Calculate the determinant
+-        det = a00 * b01 + a01 * b11 + a02 * b21;
++ScrollZoomHandler.prototype = {
+ 
+-    if (!det) { 
+-        return null; 
+-    }
+-    det = 1.0 / det;
++    _enabled: false,
+ 
+-    out[0] = b01 * det;
+-    out[1] = (-a22 * a01 + a02 * a21) * det;
+-    out[2] = (a12 * a01 - a02 * a11) * det;
+-    out[3] = b11 * det;
+-    out[4] = (a22 * a00 - a02 * a20) * det;
+-    out[5] = (-a12 * a00 + a02 * a10) * det;
+-    out[6] = b21 * det;
+-    out[7] = (-a21 * a00 + a01 * a20) * det;
+-    out[8] = (a11 * a00 - a01 * a10) * det;
+-    return out;
++    /**
++     * Returns the current enabled/disabled state of the "scroll to zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
++
++    /**
++     * Enable the "scroll to zoom" interaction.
++     * @example
++     *   map.scrollZoom.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('wheel', this._onWheel, false);
++        this._el.addEventListener('mousewheel', this._onWheel, false);
++        this._enabled = true;
++    },
++
++    /**
++     * Disable the "scroll to zoom" interaction.
++     * @example
++     *   map.scrollZoom.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('wheel', this._onWheel);
++        this._el.removeEventListener('mousewheel', this._onWheel);
++        this._enabled = false;
++    },
++
++    _onWheel: function (e) {
++        var value;
++
++        if (e.type === 'wheel') {
++            value = e.deltaY;
++            // Firefox doubles the values on retina screens...
++            if (firefox && e.deltaMode === window.WheelEvent.DOM_DELTA_PIXEL) value /= browser.devicePixelRatio;
++            if (e.deltaMode === window.WheelEvent.DOM_DELTA_LINE) value *= 40;
++
++        } else if (e.type === 'mousewheel') {
++            value = -e.wheelDeltaY;
++            if (safari) value = value / 3;
++        }
++
++        var now = browser.now(),
++            timeDelta = now - (this._time || 0);
++
++        this._pos = DOM.mousePos(this._el, e);
++        this._time = now;
++
++        if (value !== 0 && (value % 4.000244140625) === 0) {
++            // This one is definitely a mouse wheel event.
++            this._type = 'wheel';
++            // Normalize this value to match trackpad.
++            value = Math.floor(value / 4);
++
++        } else if (value !== 0 && Math.abs(value) < 4) {
++            // This one is definitely a trackpad event because it is so small.
++            this._type = 'trackpad';
++
++        } else if (timeDelta > 400) {
++            // This is likely a new scroll action.
++            this._type = null;
++            this._lastValue = value;
++
++            // Start a timeout in case this was a singular event, and dely it by up to 40ms.
++            this._timeout = setTimeout(this._onTimeout, 40);
++
++        } else if (!this._type) {
++            // This is a repeating event, but we don't know the type of event just yet.
++            // If the delta per time is small, we assume it's a fast trackpad; otherwise we switch into wheel mode.
++            this._type = (Math.abs(timeDelta * value) < 200) ? 'trackpad' : 'wheel';
++
++            // Make sure our delayed event isn't fired again, because we accumulate
++            // the previous event (which was less than 40ms ago) into this event.
++            if (this._timeout) {
++                clearTimeout(this._timeout);
++                this._timeout = null;
++                value += this._lastValue;
++            }
++        }
++
++        // Slow down zoom if shift key is held for more precise zooming
++        if (e.shiftKey && value) value = value / 4;
++
++        // Only fire the callback if we actually know what type of scrolling device the user uses.
++        if (this._type) this._zoom(-value, e);
++
++        e.preventDefault();
++    },
++
++    _onTimeout: function () {
++        this._type = 'wheel';
++        this._zoom(-this._lastValue);
++    },
++
++    _zoom: function (delta, e) {
++        if (delta === 0) return;
++        var map = this._map;
++
++        // Scale by sigmoid of scroll wheel delta.
++        var scale = 2 / (1 + Math.exp(-Math.abs(delta / 100)));
++        if (delta < 0 && scale !== 0) scale = 1 / scale;
++
++        var fromScale = map.ease ? map.ease.to : map.transform.scale,
++            targetZoom = map.transform.scaleZoom(fromScale * scale);
++
++        map.zoomTo(targetZoom, {
++            duration: 0,
++            around: map.unproject(this._pos),
++            delayEndEvents: 200
++        }, { originalEvent: e });
++    }
+ };
+ 
++
+ /**
+- * Calculates the adjugate of a mat3
++ * Zoom start event. This event is emitted just before the map begins a transition from one
++ * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
+- */
+-mat3.adjoint = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8];
+-
+-    out[0] = (a11 * a22 - a12 * a21);
+-    out[1] = (a02 * a21 - a01 * a22);
+-    out[2] = (a01 * a12 - a02 * a11);
+-    out[3] = (a12 * a20 - a10 * a22);
+-    out[4] = (a00 * a22 - a02 * a20);
+-    out[5] = (a02 * a10 - a00 * a12);
+-    out[6] = (a10 * a21 - a11 * a20);
+-    out[7] = (a01 * a20 - a00 * a21);
+-    out[8] = (a00 * a11 - a01 * a10);
+-    return out;
+-};
++ * @event zoomstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
++ */
+ 
+ /**
+- * Calculates the determinant of a mat3
++ * Zoom event. This event is emitted repeatedly during animated transitions from one zoom level to
++ * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat3} a the source matrix
+- * @returns {Number} determinant of a
++ * @event zoom
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-mat3.determinant = function (a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8];
+-
+-    return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);
+-};
+ 
+ /**
+- * Multiplies two mat3's
++ * Zoom end event. This event is emitted just after the map completes a transition from one
++ * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @returns {mat3} out
++ * @event zoomend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-mat3.multiply = function (out, a, b) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
+ 
+-        b00 = b[0], b01 = b[1], b02 = b[2],
+-        b10 = b[3], b11 = b[4], b12 = b[5],
+-        b20 = b[6], b21 = b[7], b22 = b[8];
++},{"../../util/browser":348,"../../util/dom":351,"../../util/util":362}],341:[function(require,module,exports){
++'use strict';
+ 
+-    out[0] = b00 * a00 + b01 * a10 + b02 * a20;
+-    out[1] = b00 * a01 + b01 * a11 + b02 * a21;
+-    out[2] = b00 * a02 + b01 * a12 + b02 * a22;
++var DOM = require('../../util/dom'),
++    util = require('../../util/util');
+ 
+-    out[3] = b10 * a00 + b11 * a10 + b12 * a20;
+-    out[4] = b10 * a01 + b11 * a11 + b12 * a21;
+-    out[5] = b10 * a02 + b11 * a12 + b12 * a22;
++module.exports = TouchZoomRotateHandler;
+ 
+-    out[6] = b20 * a00 + b21 * a10 + b22 * a20;
+-    out[7] = b20 * a01 + b21 * a11 + b22 * a21;
+-    out[8] = b20 * a02 + b21 * a12 + b22 * a22;
+-    return out;
+-};
++var inertiaLinearity = 0.15,
++    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
++    inertiaDeceleration = 12, // scale / s^2
++    inertiaMaxSpeed = 2.5, // scale / s
++    significantScaleThreshold = 0.15,
++    significantRotateThreshold = 4;
+ 
+-/**
+- * Alias for {@link mat3.multiply}
+- * @function
+- */
+-mat3.mul = mat3.multiply;
+ 
+ /**
+- * Translate a mat3 by the given vector
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to translate
+- * @param {vec2} v vector to translate by
+- * @returns {mat3} out
++ * The `TouchZoomRotateHandler` allows a user to zoom and rotate the map by
++ * pinching on a touchscreen.
++ * @class TouchZoomRotateHandler
+  */
+-mat3.translate = function(out, a, v) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
+-        x = v[0], y = v[1];
++function TouchZoomRotateHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-    out[0] = a00;
+-    out[1] = a01;
+-    out[2] = a02;
++    util.bindHandlers(this);
++}
+ 
+-    out[3] = a10;
+-    out[4] = a11;
+-    out[5] = a12;
++TouchZoomRotateHandler.prototype = {
+ 
+-    out[6] = x * a00 + y * a10 + a20;
+-    out[7] = x * a01 + y * a11 + a21;
+-    out[8] = x * a02 + y * a12 + a22;
+-    return out;
+-};
++    _enabled: false,
+ 
+-/**
+- * Rotates a mat3 by the given angle
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat3} out
+- */
+-mat3.rotate = function (out, a, rad) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
++    /**
++     * Returns the current enabled/disabled state of the "pinch to rotate and zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-        s = Math.sin(rad),
+-        c = Math.cos(rad);
++    /**
++     * Enable the "pinch to rotate and zoom" interaction.
++     * @example
++     *   map.touchZoomRotate.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('touchstart', this._onStart, false);
++        this._enabled = true;
++    },
+ 
+-    out[0] = c * a00 + s * a10;
+-    out[1] = c * a01 + s * a11;
+-    out[2] = c * a02 + s * a12;
++    /**
++     * Disable the "pinch to rotate and zoom" interaction.
++     * @example
++     *   map.touchZoomRotate.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('touchstart', this._onStart);
++        this._enabled = false;
++    },
+ 
+-    out[3] = c * a10 - s * a00;
+-    out[4] = c * a11 - s * a01;
+-    out[5] = c * a12 - s * a02;
++    /**
++     * Disable the "pinch to rotate" interaction, leaving the "pinch to zoom"
++     * interaction enabled.
++     * @example
++     *   map.touchZoomRotate.disableRotation();
++     */
++    disableRotation: function() {
++        this._rotationDisabled = true;
++    },
+ 
+-    out[6] = a20;
+-    out[7] = a21;
+-    out[8] = a22;
+-    return out;
+-};
++    /**
++     * Enable the "pinch to rotate" interaction, undoing a call to
++     * `disableRotation`.
++     * @example
++     *   map.touchZoomRotate.enable();
++     *   map.touchZoomRotate.enableRotation();
++     */
++    enableRotation: function() {
++        this._rotationDisabled = false;
++    },
+ 
+-/**
+- * Scales the mat3 by the dimensions in the given vec2
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to rotate
+- * @param {vec2} v the vec2 to scale the matrix by
+- * @returns {mat3} out
+- **/
+-mat3.scale = function(out, a, v) {
+-    var x = v[0], y = v[1];
++    _onStart: function (e) {
++        if (e.touches.length !== 2) return;
+ 
+-    out[0] = x * a[0];
+-    out[1] = x * a[1];
+-    out[2] = x * a[2];
++        var p0 = DOM.mousePos(this._el, e.touches[0]),
++            p1 = DOM.mousePos(this._el, e.touches[1]);
+ 
+-    out[3] = y * a[3];
+-    out[4] = y * a[4];
+-    out[5] = y * a[5];
++        this._startVec = p0.sub(p1);
++        this._startScale = this._map.transform.scale;
++        this._startBearing = this._map.transform.bearing;
++        this._gestureIntent = undefined;
++        this._inertia = [];
+ 
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    return out;
+-};
++        document.addEventListener('touchmove', this._onMove, false);
++        document.addEventListener('touchend', this._onEnd, false);
++    },
+ 
+-/**
+- * Creates a matrix from a vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat3.identity(dest);
+- *     mat3.translate(dest, dest, vec);
+- *
+- * @param {mat3} out mat3 receiving operation result
+- * @param {vec2} v Translation vector
+- * @returns {mat3} out
+- */
+-mat3.fromTranslation = function(out, v) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 1;
+-    out[5] = 0;
+-    out[6] = v[0];
+-    out[7] = v[1];
+-    out[8] = 1;
+-    return out;
+-}
++    _onMove: function (e) {
++        if (e.touches.length !== 2) return;
+ 
+-/**
+- * Creates a matrix from a given angle
+- * This is equivalent to (but much faster than):
+- *
+- *     mat3.identity(dest);
+- *     mat3.rotate(dest, dest, rad);
+- *
+- * @param {mat3} out mat3 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat3} out
+- */
+-mat3.fromRotation = function(out, rad) {
+-    var s = Math.sin(rad), c = Math.cos(rad);
++        var p0 = DOM.mousePos(this._el, e.touches[0]),
++            p1 = DOM.mousePos(this._el, e.touches[1]),
++            p = p0.add(p1).div(2),
++            vec = p0.sub(p1),
++            scale = vec.mag() / this._startVec.mag(),
++            bearing = this._rotationDisabled ? 0 : vec.angleWith(this._startVec) * 180 / Math.PI,
++            map = this._map;
+ 
+-    out[0] = c;
+-    out[1] = s;
+-    out[2] = 0;
++        // Determine 'intent' by whichever threshold is surpassed first,
++        // then keep that state for the duration of this gesture.
++        if (!this._gestureIntent) {
++            var scalingSignificantly = (Math.abs(1 - scale) > significantScaleThreshold),
++                rotatingSignificantly = (Math.abs(bearing) > significantRotateThreshold);
+ 
+-    out[3] = -s;
+-    out[4] = c;
+-    out[5] = 0;
++            if (rotatingSignificantly) {
++                this._gestureIntent = 'rotate';
++            } else if (scalingSignificantly) {
++                this._gestureIntent = 'zoom';
++            }
+ 
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
+-}
++            if (this._gestureIntent) {
++                this._startVec = vec;
++                this._startScale = map.transform.scale;
++                this._startBearing = map.transform.bearing;
++            }
+ 
+-/**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat3.identity(dest);
+- *     mat3.scale(dest, dest, vec);
+- *
+- * @param {mat3} out mat3 receiving operation result
+- * @param {vec2} v Scaling vector
+- * @returns {mat3} out
+- */
+-mat3.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
++        } else {
++            var param = { duration: 0, around: map.unproject(p) };
+ 
+-    out[3] = 0;
+-    out[4] = v[1];
+-    out[5] = 0;
++            if (this._gestureIntent === 'rotate') {
++                param.bearing = this._startBearing + bearing;
++            }
++            if (this._gestureIntent === 'zoom' || this._gestureIntent === 'rotate') {
++                param.zoom = map.transform.scaleZoom(this._startScale * scale);
++            }
+ 
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
+-}
++            map.stop();
++            this._drainInertiaBuffer();
++            this._inertia.push([Date.now(), scale, p]);
+ 
+-/**
+- * Copies the values from a mat2d into a mat3
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat2d} a the matrix to copy
+- * @returns {mat3} out
+- **/
+-mat3.fromMat2d = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = 0;
++            map.easeTo(param, { originalEvent: e });
++        }
+ 
+-    out[3] = a[2];
+-    out[4] = a[3];
+-    out[5] = 0;
++        e.preventDefault();
++    },
+ 
+-    out[6] = a[4];
+-    out[7] = a[5];
+-    out[8] = 1;
+-    return out;
+-};
++    _onEnd: function (e) {
++        document.removeEventListener('touchmove', this._onMove);
++        document.removeEventListener('touchend', this._onEnd);
++        this._drainInertiaBuffer();
+ 
+-/**
+-* Calculates a 3x3 matrix from the given quaternion
+-*
+-* @param {mat3} out mat3 receiving operation result
+-* @param {quat} q Quaternion to create matrix from
+-*
+-* @returns {mat3} out
+-*/
+-mat3.fromQuat = function (out, q) {
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++        var inertia = this._inertia,
++            map = this._map;
+ 
+-        xx = x * x2,
+-        yx = y * x2,
+-        yy = y * y2,
+-        zx = z * x2,
+-        zy = z * y2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++        if (inertia.length < 2) {
++            map.snapToNorth({}, { originalEvent: e });
++            return;
++        }
+ 
+-    out[0] = 1 - yy - zz;
+-    out[3] = yx - wz;
+-    out[6] = zx + wy;
++        var last = inertia[inertia.length - 1],
++            first = inertia[0],
++            lastScale = map.transform.scaleZoom(this._startScale * last[1]),
++            firstScale = map.transform.scaleZoom(this._startScale * first[1]),
++            scaleOffset = lastScale - firstScale,
++            scaleDuration = (last[0] - first[0]) / 1000,
++            p = last[2];
+ 
+-    out[1] = yx + wz;
+-    out[4] = 1 - xx - zz;
+-    out[7] = zy - wx;
++        if (scaleDuration === 0 || lastScale === firstScale) {
++            map.snapToNorth({}, { originalEvent: e });
++            return;
++        }
+ 
+-    out[2] = zx - wy;
+-    out[5] = zy + wx;
+-    out[8] = 1 - xx - yy;
++        // calculate scale/s speed and adjust for increased initial animation speed when easing
++        var speed = scaleOffset * inertiaLinearity / scaleDuration; // scale/s
+ 
+-    return out;
+-};
++        if (Math.abs(speed) > inertiaMaxSpeed) {
++            if (speed > 0) {
++                speed = inertiaMaxSpeed;
++            } else {
++                speed = -inertiaMaxSpeed;
++            }
++        }
+ 
+-/**
+-* Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix
+-*
+-* @param {mat3} out mat3 receiving operation result
+-* @param {mat4} a Mat4 to derive the normal matrix from
+-*
+-* @returns {mat3} out
+-*/
+-mat3.normalFromMat4 = function (out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++        var duration = Math.abs(speed / (inertiaDeceleration * inertiaLinearity)) * 1000,
++            targetScale = lastScale + speed * duration / 2000;
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32,
++        if (targetScale < 0) {
++            targetScale = 0;
++        }
+ 
+-        // Calculate the determinant
+-        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++        map.easeTo({
++            zoom: targetScale,
++            duration: duration,
++            easing: inertiaEasing,
++            around: map.unproject(p)
++        }, { originalEvent: e });
++    },
+ 
+-    if (!det) { 
+-        return null; 
++    _drainInertiaBuffer: function() {
++        var inertia = this._inertia,
++            now = Date.now(),
++            cutoff = 160; // msec
++
++        while (inertia.length > 2 && now - inertia[0][0] > cutoff) inertia.shift();
+     }
+-    det = 1.0 / det;
++};
+ 
+-    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+-    out[1] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+-    out[2] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
++},{"../../util/dom":351,"../../util/util":362}],342:[function(require,module,exports){
++'use strict';
+ 
+-    out[3] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+-    out[4] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+-    out[5] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
++/*
++ * Adds the map's position to its page's location hash.
++ * Passed as an option to the map object.
++ *
++ * @class mapboxgl.Hash
++ * @returns {Hash} `this`
++ */
++module.exports = Hash;
+ 
+-    out[6] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+-    out[7] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+-    out[8] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
++var util = require('../util/util');
++
++function Hash() {
++    util.bindAll([
++        '_onHashChange',
++        '_updateHash'
++    ], this);
++}
++
++Hash.prototype = {
++    /*
++     * Map element to listen for coordinate changes
++     *
++     * @param {Object} map
++     * @returns {Hash} `this`
++     */
++    addTo: function(map) {
++        this._map = map;
++        window.addEventListener('hashchange', this._onHashChange, false);
++        this._map.on('moveend', this._updateHash);
++        return this;
++    },
++
++    /*
++     * Removes hash
++     *
++     * @returns {Popup} `this`
++     */
++    remove: function() {
++        window.removeEventListener('hashchange', this._onHashChange, false);
++        this._map.off('moveend', this._updateHash);
++        delete this._map;
++        return this;
++    },
++
++    _onHashChange: function() {
++        var loc = location.hash.replace('#', '').split('/');
++        if (loc.length >= 3) {
++            this._map.jumpTo({
++                center: [+loc[2], +loc[1]],
++                zoom: +loc[0],
++                bearing: +(loc[3] || 0)
++            });
++            return true;
++        }
++        return false;
++    },
++
++    _updateHash: function() {
++        var center = this._map.getCenter(),
++            zoom = this._map.getZoom(),
++            bearing = this._map.getBearing(),
++            precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2)),
++
++            hash = '#' + (Math.round(zoom * 100) / 100) +
++                '/' + center.lat.toFixed(precision) +
++                '/' + center.lng.toFixed(precision) +
++                (bearing ? '/' + (Math.round(bearing * 10) / 10) : '');
+ 
+-    return out;
++        window.history.replaceState('', '', hash);
++    }
+ };
+ 
+-/**
+- * Returns a string representation of a mat3
+- *
+- * @param {mat3} mat matrix to represent as a string
+- * @returns {String} string representation of the matrix
+- */
+-mat3.str = function (a) {
+-    return 'mat3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
+-                    a[3] + ', ' + a[4] + ', ' + a[5] + ', ' + 
+-                    a[6] + ', ' + a[7] + ', ' + a[8] + ')';
+-};
++},{"../util/util":362}],343:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Returns Frobenius norm of a mat3
+- *
+- * @param {mat3} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
+- */
+-mat3.frob = function (a) {
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2)))
++var handlers = {
++    scrollZoom: require('./handler/scroll_zoom'),
++    boxZoom: require('./handler/box_zoom'),
++    dragRotate: require('./handler/drag_rotate'),
++    dragPan: require('./handler/drag_pan'),
++    keyboard: require('./handler/keyboard'),
++    doubleClickZoom: require('./handler/dblclick_zoom'),
++    touchZoomRotate: require('./handler/touch_zoom_rotate')
+ };
+ 
+-/**
+- * Adds two mat3's
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @returns {mat3} out
+- */
+-mat3.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    out[4] = a[4] + b[4];
+-    out[5] = a[5] + b[5];
+-    out[6] = a[6] + b[6];
+-    out[7] = a[7] + b[7];
+-    out[8] = a[8] + b[8];
+-    return out;
+-};
++var DOM = require('../util/dom'),
++    util = require('../util/util'),
++    Point = require('point-geometry');
+ 
+-/**
+- * Subtracts matrix b from matrix a
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @returns {mat3} out
+- */
+-mat3.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    out[4] = a[4] - b[4];
+-    out[5] = a[5] - b[5];
+-    out[6] = a[6] - b[6];
+-    out[7] = a[7] - b[7];
+-    out[8] = a[8] - b[8];
+-    return out;
+-};
++module.exports = Interaction;
+ 
+-/**
+- * Alias for {@link mat3.subtract}
+- * @function
+- */
+-mat3.sub = mat3.subtract;
++function Interaction(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-/**
+- * Multiply each element of the matrix by a scalar.
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat3} out
+- */
+-mat3.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    out[4] = a[4] * b;
+-    out[5] = a[5] * b;
+-    out[6] = a[6] * b;
+-    out[7] = a[7] * b;
+-    out[8] = a[8] * b;
+-    return out;
+-};
++    for (var name in handlers) {
++        map[name] = new handlers[name](map);
++    }
+ 
+-/**
+- * Adds two mat3's after multiplying each element of the second operand by a scalar value.
+- *
+- * @param {mat3} out the receiving vector
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat3} out
+- */
+-mat3.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    out[4] = a[4] + (b[4] * scale);
+-    out[5] = a[5] + (b[5] * scale);
+-    out[6] = a[6] + (b[6] * scale);
+-    out[7] = a[7] + (b[7] * scale);
+-    out[8] = a[8] + (b[8] * scale);
+-    return out;
+-};
++    util.bindHandlers(this);
++}
+ 
+-/*
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {mat3} a The first matrix.
+- * @param {mat3} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat3.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && 
+-           a[3] === b[3] && a[4] === b[4] && a[5] === b[5] &&
+-           a[6] === b[6] && a[7] === b[7] && a[8] === b[8];
+-};
++Interaction.prototype = {
++    enable: function () {
++        var options = this._map.options,
++            el = this._el;
+ 
+-/**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
+- *
+- * @param {mat3} a The first matrix.
+- * @param {mat3} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat3.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5], a6 = a[6], a7 = a[7], a8 = a[8];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5], b6 = a[6], b7 = b[7], b8 = b[8];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
+-            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
+-            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
+-            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
+-            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
+-            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)));
+-};
++        for (var name in handlers) {
++            if (options[name]) this._map[name].enable();
++        }
+ 
++        el.addEventListener('mousedown', this._onMouseDown, false);
++        el.addEventListener('mouseup', this._onMouseUp, false);
++        el.addEventListener('mousemove', this._onMouseMove, false);
++        el.addEventListener('touchstart', this._onTouchStart, false);
++        el.addEventListener('touchend', this._onTouchEnd, false);
++        el.addEventListener('touchmove', this._onTouchMove, false);
++        el.addEventListener('touchcancel', this._onTouchCancel, false);
++        el.addEventListener('click', this._onClick, false);
++        el.addEventListener('dblclick', this._onDblClick, false);
++        el.addEventListener('contextmenu', this._onContextMenu, false);
++    },
+ 
+-module.exports = mat3;
++    disable: function () {
++        var options = this._map.options,
++            el = this._el;
+ 
+-},{"./common.js":364}],368:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++        for (var name in handlers) {
++            if (options[name]) this._map[name].disable();
++        }
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++        el.removeEventListener('mousedown', this._onMouseDown);
++        el.removeEventListener('mouseup', this._onMouseUp);
++        el.removeEventListener('mousemove', this._onMouseMove);
++        el.removeEventListener('touchstart', this._onTouchStart);
++        el.removeEventListener('touchend', this._onTouchEnd);
++        el.removeEventListener('touchmove', this._onTouchMove);
++        el.removeEventListener('touchcancel', this._onTouchCancel);
++        el.removeEventListener('click', this._onClick);
++        el.removeEventListener('dblclick', this._onDblClick);
++        el.removeEventListener('contextmenu', this._onContextMenu);
++    },
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    _onMouseDown: function (e) {
++        this._map.stop();
++        this._startPos = DOM.mousePos(this._el, e);
++        this._fireMouseEvent('mousedown', e);
++    },
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    _onMouseUp: function (e) {
++        var map = this._map,
++            rotating = map.dragRotate && map.dragRotate.isActive();
+ 
+-var glMatrix = require("./common.js");
++        if (this._contextMenuEvent && !rotating) {
++            this._fireMouseEvent('contextmenu', this._contextMenuEvent);
++        }
+ 
+-/**
+- * @class 4x4 Matrix
+- * @name mat4
+- */
+-var mat4 = {
+-  scalar: {},
+-  SIMD: {},
+-};
++        this._contextMenuEvent = null;
++        this._fireMouseEvent('mouseup', e);
++    },
+ 
+-/**
+- * Creates a new identity mat4
+- *
+- * @returns {mat4} a new 4x4 matrix
+- */
+-mat4.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(16);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-};
++    _onMouseMove: function (e) {
++        var map = this._map,
++            el = this._el;
+ 
+-/**
+- * Creates a new mat4 initialized with values from an existing matrix
+- *
+- * @param {mat4} a matrix to clone
+- * @returns {mat4} a new 4x4 matrix
+- */
+-mat4.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(16);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    out[9] = a[9];
+-    out[10] = a[10];
+-    out[11] = a[11];
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++        if (map.dragPan && map.dragPan.isActive()) return;
++        if (map.dragRotate && map.dragRotate.isActive()) return;
+ 
+-/**
+- * Copy the values from one mat4 to another
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-mat4.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    out[9] = a[9];
+-    out[10] = a[10];
+-    out[11] = a[11];
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++        var target = e.toElement || e.target;
++        while (target && target !== el) target = target.parentNode;
++        if (target !== el) return;
+ 
+-/**
+- * Create a new mat4 with the given values
+- *
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m03 Component in column 0, row 3 position (index 3)
+- * @param {Number} m10 Component in column 1, row 0 position (index 4)
+- * @param {Number} m11 Component in column 1, row 1 position (index 5)
+- * @param {Number} m12 Component in column 1, row 2 position (index 6)
+- * @param {Number} m13 Component in column 1, row 3 position (index 7)
+- * @param {Number} m20 Component in column 2, row 0 position (index 8)
+- * @param {Number} m21 Component in column 2, row 1 position (index 9)
+- * @param {Number} m22 Component in column 2, row 2 position (index 10)
+- * @param {Number} m23 Component in column 2, row 3 position (index 11)
+- * @param {Number} m30 Component in column 3, row 0 position (index 12)
+- * @param {Number} m31 Component in column 3, row 1 position (index 13)
+- * @param {Number} m32 Component in column 3, row 2 position (index 14)
+- * @param {Number} m33 Component in column 3, row 3 position (index 15)
+- * @returns {mat4} A new mat4
+- */
+-mat4.fromValues = function(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
+-    var out = new glMatrix.ARRAY_TYPE(16);
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m03;
+-    out[4] = m10;
+-    out[5] = m11;
+-    out[6] = m12;
+-    out[7] = m13;
+-    out[8] = m20;
+-    out[9] = m21;
+-    out[10] = m22;
+-    out[11] = m23;
+-    out[12] = m30;
+-    out[13] = m31;
+-    out[14] = m32;
+-    out[15] = m33;
+-    return out;
+-};
++        this._fireMouseEvent('mousemove', e);
++    },
+ 
+-/**
+- * Set the components of a mat4 to the given values
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m03 Component in column 0, row 3 position (index 3)
+- * @param {Number} m10 Component in column 1, row 0 position (index 4)
+- * @param {Number} m11 Component in column 1, row 1 position (index 5)
+- * @param {Number} m12 Component in column 1, row 2 position (index 6)
+- * @param {Number} m13 Component in column 1, row 3 position (index 7)
+- * @param {Number} m20 Component in column 2, row 0 position (index 8)
+- * @param {Number} m21 Component in column 2, row 1 position (index 9)
+- * @param {Number} m22 Component in column 2, row 2 position (index 10)
+- * @param {Number} m23 Component in column 2, row 3 position (index 11)
+- * @param {Number} m30 Component in column 3, row 0 position (index 12)
+- * @param {Number} m31 Component in column 3, row 1 position (index 13)
+- * @param {Number} m32 Component in column 3, row 2 position (index 14)
+- * @param {Number} m33 Component in column 3, row 3 position (index 15)
+- * @returns {mat4} out
+- */
+-mat4.set = function(out, m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m03;
+-    out[4] = m10;
+-    out[5] = m11;
+-    out[6] = m12;
+-    out[7] = m13;
+-    out[8] = m20;
+-    out[9] = m21;
+-    out[10] = m22;
+-    out[11] = m23;
+-    out[12] = m30;
+-    out[13] = m31;
+-    out[14] = m32;
+-    out[15] = m33;
+-    return out;
+-};
++    _onTouchStart: function (e) {
++        this._map.stop();
++        this._fireTouchEvent('touchstart', e);
+ 
++        if (!e.touches || e.touches.length > 1) return;
+ 
+-/**
+- * Set a mat4 to the identity matrix
+- *
+- * @param {mat4} out the receiving matrix
+- * @returns {mat4} out
+- */
+-mat4.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-};
++        if (!this._tapped) {
++            this._tapped = setTimeout(this._onTouchTimeout, 300);
+ 
+-/**
+- * Transpose the values of a mat4 not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-mat4.scalar.transpose = function(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a01 = a[1], a02 = a[2], a03 = a[3],
+-            a12 = a[6], a13 = a[7],
+-            a23 = a[11];
++        } else {
++            clearTimeout(this._tapped);
++            this._tapped = null;
++            this._fireMouseEvent('dblclick', e);
++        }
++    },
+ 
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a01;
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a02;
+-        out[9] = a12;
+-        out[11] = a[14];
+-        out[12] = a03;
+-        out[13] = a13;
+-        out[14] = a23;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a[1];
+-        out[5] = a[5];
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a[2];
+-        out[9] = a[6];
+-        out[10] = a[10];
+-        out[11] = a[14];
+-        out[12] = a[3];
+-        out[13] = a[7];
+-        out[14] = a[11];
+-        out[15] = a[15];
+-    }
++    _onTouchMove: function (e) {
++        this._fireTouchEvent('touchmove', e);
++    },
+ 
+-    return out;
+-};
++    _onTouchEnd: function (e) {
++        this._fireTouchEvent('touchend', e);
++    },
++
++    _onTouchCancel: function (e) {
++        this._fireTouchEvent('touchcancel', e);
++    },
++
++    _onTouchTimeout: function () {
++        this._tapped = null;
++    },
++
++    _onClick: function (e) {
++        var pos = DOM.mousePos(this._el, e);
++
++        if (pos.equals(this._startPos)) {
++            this._fireMouseEvent('click', e);
++        }
++    },
++
++    _onDblClick: function (e) {
++        this._fireMouseEvent('dblclick', e);
++        e.preventDefault();
++    },
+ 
+-/**
+- * Transpose the values of a mat4 using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-mat4.SIMD.transpose = function(out, a) {
+-    var a0, a1, a2, a3,
+-        tmp01, tmp23,
+-        out0, out1, out2, out3;
++    _onContextMenu: function (e) {
++        this._contextMenuEvent = e;
++        e.preventDefault();
++    },
+ 
+-    a0 = SIMD.Float32x4.load(a, 0);
+-    a1 = SIMD.Float32x4.load(a, 4);
+-    a2 = SIMD.Float32x4.load(a, 8);
+-    a3 = SIMD.Float32x4.load(a, 12);
++    _fireMouseEvent: function (type, e) {
++        var pos = DOM.mousePos(this._el, e);
+ 
+-    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
+-    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
+-    out0  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
+-    out1  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
+-    SIMD.Float32x4.store(out, 0,  out0);
+-    SIMD.Float32x4.store(out, 4,  out1);
++        return this._map.fire(type, {
++            lngLat: this._map.unproject(pos),
++            point: pos,
++            originalEvent: e
++        });
++    },
+ 
+-    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
+-    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
+-    out2  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
+-    out3  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
+-    SIMD.Float32x4.store(out, 8,  out2);
+-    SIMD.Float32x4.store(out, 12, out3);
++    _fireTouchEvent: function (type, e) {
++        var touches = DOM.touchPos(this._el, e),
++            singular = touches.reduce(function (prev, curr, i, arr) {
++                return prev.add(curr.div(arr.length));
++            }, new Point(0, 0));
+ 
+-    return out;
++        return this._map.fire(type, {
++            lngLat: this._map.unproject(singular),
++            point: singular,
++            lngLats: touches.map(function(t) { return this._map.unproject(t); }, this),
++            points: touches,
++            originalEvent: e
++        });
++    }
+ };
+ 
++
+ /**
+- * Transpse a mat4 using SIMD if available and enabled
++ * When an event [fires]{@link #Evented.fire} as a result of a
++ * user interaction, the event will be called with an EventData
++ * object containing the original DOM event along with coordinates of
++ * the event target.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @typedef {Object} EventData
++ * @property {Event} originalEvent The original DOM event
++ * @property {Point} point The pixel location of the event
++ * @property {LngLat} lngLat The geographic location of the event
++ * @example
++ * map.on('click', function(data) {
++ *   var e = data && data.originalEvent;
++ *   console.log('got click ' + (e ? 'button = ' + e.button : ''));
++ * });
+  */
+-mat4.transpose = glMatrix.USE_SIMD ? mat4.SIMD.transpose : mat4.scalar.transpose;
+ 
+ /**
+- * Inverts a mat4 not using SIMD
++ * Mouse down event.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event mousedown
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [mousedown event](https://developer.mozilla.org/en-US/docs/Web/Events/mousedown)
+  */
+-mat4.scalar.invert = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+-
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32,
+-
+-        // Calculate the determinant
+-        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+-
+-    if (!det) {
+-        return null;
+-    }
+-    det = 1.0 / det;
+-
+-    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+-    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+-    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+-    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
+-    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+-    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+-    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+-    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
+-    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+-    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+-    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+-    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
+-    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
+-    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
+-    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
+-    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
+ 
+-    return out;
+-};
++/**
++ * Mouse up event.
++ *
++ * @event mouseup
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [mouseup event](https://developer.mozilla.org/en-US/docs/Web/Events/mouseup)
++ */
+ 
+ /**
+- * Inverts a mat4 using SIMD
++ * Mouse move event.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event mousemove
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [mousemouse event](https://developer.mozilla.org/en-US/docs/Web/Events/mousemove)
+  */
+-mat4.SIMD.invert = function(out, a) {
+-  var row0, row1, row2, row3,
+-      tmp1,
+-      minor0, minor1, minor2, minor3,
+-      det,
+-      a0 = SIMD.Float32x4.load(a, 0),
+-      a1 = SIMD.Float32x4.load(a, 4),
+-      a2 = SIMD.Float32x4.load(a, 8),
+-      a3 = SIMD.Float32x4.load(a, 12);
+ 
+-  // Compute matrix adjugate
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
+-  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
+-  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
+-  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
+-  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
+-  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
+-  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
++/**
++ * Touch start event.
++ *
++ * @event touchstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchstart event](https://developer.mozilla.org/en-US/docs/Web/Events/touchstart).
++ */
+ 
+-  tmp1   = SIMD.Float32x4.mul(row2, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.mul(row1, tmp1);
+-  minor1 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
+-  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
+-  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
++/**
++ * Touch end event.
++ *
++ * @event touchend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
++ */
+ 
+-  tmp1   = SIMD.Float32x4.mul(row1, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
+-  minor3 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
+-  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
++/**
++ * Touch move event.
++ *
++ * @event touchmove
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchmove event](https://developer.mozilla.org/en-US/docs/Web/Events/touchmove).
++ */
+ 
+-  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
+-  minor2 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
+-  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
++/**
++ * Touch cancel event.
++ *
++ * @event touchcancel
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
++ */
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
++/**
++ * Click event.
++ *
++ * @event click
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [click event](https://developer.mozilla.org/en-US/docs/Web/Events/click)
++ */
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
+-  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
++/**
++ * Double click event.
++ *
++ * @event dblclick
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
++ */
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
++/**
++ * Context menu event.
++ *
++ * @event contextmenu
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if available
++ */
+ 
+-  // Compute matrix determinant
+-  det   = SIMD.Float32x4.mul(row0, minor0);
+-  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 2, 3, 0, 1), det);
+-  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 1, 0, 3, 2), det);
+-  tmp1  = SIMD.Float32x4.reciprocalApproximation(det);
+-  det   = SIMD.Float32x4.sub(
+-               SIMD.Float32x4.add(tmp1, tmp1),
+-               SIMD.Float32x4.mul(det, SIMD.Float32x4.mul(tmp1, tmp1)));
+-  det   = SIMD.Float32x4.swizzle(det, 0, 0, 0, 0);
+-  if (!det) {
+-      return null;
+-  }
++/**
++ * Load event. This event is emitted immediately after all necessary resources have been downloaded
++ * and the first visually complete rendering has occurred.
++ *
++ * @event load
++ * @memberof Map
++ * @instance
++ * @type {Object}
++ */
+ 
+-  // Compute matrix inverse
+-  SIMD.Float32x4.store(out, 0,  SIMD.Float32x4.mul(det, minor0));
+-  SIMD.Float32x4.store(out, 4,  SIMD.Float32x4.mul(det, minor1));
+-  SIMD.Float32x4.store(out, 8,  SIMD.Float32x4.mul(det, minor2));
+-  SIMD.Float32x4.store(out, 12, SIMD.Float32x4.mul(det, minor3));
+-  return out;
+-}
++/**
++ * Move start event. This event is emitted just before the map begins a transition from one
++ * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
++ *
++ * @event movestart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
++ */
+ 
+ /**
+- * Inverts a mat4 using SIMD if available and enabled
++ * Move event. This event is emitted repeatedly during animated transitions from one view to
++ * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event move
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-mat4.invert = glMatrix.USE_SIMD ? mat4.SIMD.invert : mat4.scalar.invert;
+ 
+ /**
+- * Calculates the adjugate of a mat4 not using SIMD
++ * Move end event. This event is emitted just after the map completes a transition from one
++ * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event moveend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-mat4.scalar.adjoint = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+ 
+-    out[0]  =  (a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22));
+-    out[1]  = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));
+-    out[2]  =  (a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12));
+-    out[3]  = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));
+-    out[4]  = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));
+-    out[5]  =  (a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22));
+-    out[6]  = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));
+-    out[7]  =  (a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12));
+-    out[8]  =  (a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21));
+-    out[9]  = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));
+-    out[10] =  (a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11));
+-    out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));
+-    out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));
+-    out[13] =  (a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21));
+-    out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));
+-    out[15] =  (a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11));
+-    return out;
+-};
++},{"../util/dom":351,"../util/util":362,"./handler/box_zoom":335,"./handler/dblclick_zoom":336,"./handler/drag_pan":337,"./handler/drag_rotate":338,"./handler/keyboard":339,"./handler/scroll_zoom":340,"./handler/touch_zoom_rotate":341,"point-geometry":400}],344:[function(require,module,exports){
++'use strict';
++
++var Canvas = require('../util/canvas');
++var util = require('../util/util');
++var browser = require('../util/browser');
++var Evented = require('../util/evented');
++var DOM = require('../util/dom');
++
++var Style = require('../style/style');
++var AnimationLoop = require('../style/animation_loop');
++var Painter = require('../render/painter');
++
++var Transform = require('../geo/transform');
++var Hash = require('./hash');
++
++var Interaction = require('./interaction');
++
++var Camera = require('./camera');
++var LngLat = require('../geo/lng_lat');
++var LngLatBounds = require('../geo/lng_lat_bounds');
++var Point = require('point-geometry');
++var Attribution = require('./control/attribution');
++
++var defaultMinZoom = 0;
++var defaultMaxZoom = 20;
+ 
+ /**
+- * Calculates the adjugate of a mat4 using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * Creates a map instance. This is usually the beginning of your map:
++ * you tell Mapbox GL JS where to put the map by specifying a `container`
++ * option, and the map's style with `style` and other attributes of the map,
++ * and in return Mapbox GL JS initializes the map on your page and returns
++ * a map variable that lets you programmatically call methods on the map.
++ * @class Map
++ * @param {Object} options
++ * @param {string|Element} options.container HTML element to initialize the map in (or element id as string)
++ * @param {number} [options.minZoom=0] Minimum zoom of the map
++ * @param {number} [options.maxZoom=20] Maximum zoom of the map
++ * @param {Object|string} [options.style] Map style. This must be an an object conforming to the schema described in the [style reference](https://mapbox.com/mapbox-gl-style-spec/), or a URL to a JSON style. To load a style from the Mapbox API, you can use a URL of the form `mapbox://styles/:owner/:style`, where `:owner` is your Mapbox account name and `:style` is the style ID. Or you can use one of the predefined Mapbox styles:
++ *   * `mapbox://styles/mapbox/basic-v8` - Simple and flexible starting template.
++ *   * `mapbox://styles/mapbox/bright-v8` - Template for complex custom basemaps.
++ *   * `mapbox://styles/mapbox/streets-v8` - A ready-to-use basemap, perfect for minor customization or incorporating your own data.
++ *   * `mapbox://styles/mapbox/light-v8` - Subtle light backdrop for data vizualizations.
++ *   * `mapbox://styles/mapbox/dark-v8` - Subtle dark backdrop for data vizualizations.
++ * @param {boolean} [options.hash=false] If `true`, the map will track and update the page URL according to map position
++ * @param {boolean} [options.interactive=true] If `false`, no mouse, touch, or keyboard listeners are attached to the map, so it will not respond to input
++ * @param {number} [options.bearingSnap=7] Snap to north threshold in degrees.
++ * @param {Array} [options.classes] Style class names with which to initialize the map
++ * @param {boolean} [options.attributionControl=true] If `true`, an attribution control will be added to the map.
++ * @param {boolean} [options.failIfMajorPerformanceCaveat=false] If `true`, map creation will fail if the implementation determines that the performance of the created WebGL context would be dramatically lower than expected.
++ * @param {boolean} [options.preserveDrawingBuffer=false] If `true`, The maps canvas can be exported to a PNG using `map.getCanvas().toDataURL();`. This is false by default as a performance optimization.
++ * @param {LngLatBounds|Array<Array<number>>} [options.maxBounds] If set, the map is constrained to the given bounds.
++ * @param {boolean} [options.scrollZoom=true] If `true`, enable the "scroll to zoom" interaction (see `ScrollZoomHandler`)
++ * @param {boolean} [options.boxZoom=true] If `true`, enable the "box zoom" interaction (see `BoxZoomHandler`)
++ * @param {boolean} [options.dragRotate=true] If `true`, enable the "drag to rotate" interaction (see `DragRotateHandler`).
++ * @param {boolean} [options.dragPan=true] If `true`, enable the "drag to pan" interaction (see `DragPanHandler`).
++ * @param {boolean} [options.keyboard=true] If `true`, enable keyboard shortcuts (see `KeyboardHandler`).
++ * @param {boolean} [options.doubleClickZoom=true] If `true`, enable the "double click to zoom" interaction (see `DoubleClickZoomHandler`).
++ * @param {boolean} [options.touchZoomRotate=true] If `true`, enable the "pinch to rotate and zoom" interaction (see `TouchZoomRotateHandler`).
++ * @example
++ * var map = new mapboxgl.Map({
++ *   container: 'map',
++ *   center: [-122.420679, 37.772537],
++ *   zoom: 13,
++ *   style: style_object,
++ *   hash: true
++ * });
+  */
+-mat4.SIMD.adjoint = function(out, a) {
+-  var a0, a1, a2, a3;
+-  var row0, row1, row2, row3;
+-  var tmp1;
+-  var minor0, minor1, minor2, minor3;
++var Map = module.exports = function(options) {
+ 
+-  var a0 = SIMD.Float32x4.load(a, 0);
+-  var a1 = SIMD.Float32x4.load(a, 4);
+-  var a2 = SIMD.Float32x4.load(a, 8);
+-  var a3 = SIMD.Float32x4.load(a, 12);
++    options = util.inherit(this.options, options);
++    this._interactive = options.interactive;
++    this._failIfMajorPerformanceCaveat = options.failIfMajorPerformanceCaveat;
++    this._preserveDrawingBuffer = options.preserveDrawingBuffer;
+ 
+-  // Transpose the source matrix.  Sort of.  Not a true transpose operation
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
+-  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
+-  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
+-  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
++    if (typeof options.container === 'string') {
++        this._container = document.getElementById(options.container);
++    } else {
++        this._container = options.container;
++    }
+ 
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
+-  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
+-  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
+-  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
++    this.animationLoop = new AnimationLoop();
++    this.transform = new Transform(options.minZoom, options.maxZoom);
+ 
+-  tmp1   = SIMD.Float32x4.mul(row2, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.mul(row1, tmp1);
+-  minor1 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
+-  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
+-  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
++    if (options.maxBounds) {
++        this.setMaxBounds(options.maxBounds);
++    }
+ 
+-  tmp1   = SIMD.Float32x4.mul(row1, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
+-  minor3 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
+-  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
++    util.bindAll([
++        '_forwardStyleEvent',
++        '_forwardSourceEvent',
++        '_forwardLayerEvent',
++        '_forwardTileEvent',
++        '_onStyleLoad',
++        '_onStyleChange',
++        '_onSourceAdd',
++        '_onSourceRemove',
++        '_onSourceUpdate',
++        '_onWindowResize',
++        'onError',
++        '_update',
++        '_render'
++    ], this);
+ 
+-  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
+-  minor2 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
+-  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
++    this._setupContainer();
++    this._setupPainter();
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
++    this.on('move', this._update.bind(this, false));
++    this.on('zoom', this._update.bind(this, true));
++    this.on('moveend', function() {
++        this.animationLoop.set(300); // text fading
++        this._rerender();
++    }.bind(this));
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
+-  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
++    if (typeof window !== 'undefined') {
++        window.addEventListener('resize', this._onWindowResize, false);
++    }
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
++    this.interaction = new Interaction(this);
+ 
+-  SIMD.Float32x4.store(out, 0,  minor0);
+-  SIMD.Float32x4.store(out, 4,  minor1);
+-  SIMD.Float32x4.store(out, 8,  minor2);
+-  SIMD.Float32x4.store(out, 12, minor3);
+-  return out;
+-};
++    if (options.interactive) {
++        this.interaction.enable();
++    }
+ 
+-/**
+- * Calculates the adjugate of a mat4 using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+- mat4.adjoint = glMatrix.USE_SIMD ? mat4.SIMD.adjoint : mat4.scalar.adjoint;
++    this._hash = options.hash && (new Hash()).addTo(this);
++    // don't set position from options if set through hash
++    if (!this._hash || !this._hash._onHashChange()) {
++        this.jumpTo(options);
++    }
+ 
+-/**
+- * Calculates the determinant of a mat4
+- *
+- * @param {mat4} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-mat4.determinant = function (a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++    this.stacks = {};
++    this._classes = [];
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32;
++    this.resize();
+ 
+-    // Calculate the determinant
+-    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++    if (options.classes) this.setClasses(options.classes);
++    if (options.style) this.setStyle(options.style);
++    if (options.attributionControl) this.addControl(new Attribution(options.attributionControl));
++
++    this.on('style.error', this.onError);
++    this.on('source.error', this.onError);
++    this.on('tile.error', this.onError);
++    this.on('layer.error', this.onError);
+ };
+ 
+-/**
+- * Multiplies two mat4's explicitly using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand, must be a Float32Array
+- * @param {mat4} b the second operand, must be a Float32Array
+- * @returns {mat4} out
+- */
+-mat4.SIMD.multiply = function (out, a, b) {
+-    var a0 = SIMD.Float32x4.load(a, 0);
+-    var a1 = SIMD.Float32x4.load(a, 4);
+-    var a2 = SIMD.Float32x4.load(a, 8);
+-    var a3 = SIMD.Float32x4.load(a, 12);
++util.extend(Map.prototype, Evented);
++util.extend(Map.prototype, Camera.prototype);
++util.extend(Map.prototype, /** @lends Map.prototype */{
+ 
+-    var b0 = SIMD.Float32x4.load(b, 0);
+-    var out0 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 1, 1, 1, 1), a1),
+-                       SIMD.Float32x4.add(
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 2, 2, 2, 2), a2),
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 0, out0);
++    options: {
++        center: [0, 0],
++        zoom: 0,
++        bearing: 0,
++        pitch: 0,
+ 
+-    var b1 = SIMD.Float32x4.load(b, 4);
+-    var out1 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 1, 1, 1, 1), a1),
+-                       SIMD.Float32x4.add(
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 2, 2, 2, 2), a2),
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 4, out1);
++        minZoom: defaultMinZoom,
++        maxZoom: defaultMaxZoom,
+ 
+-    var b2 = SIMD.Float32x4.load(b, 8);
+-    var out2 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 1, 1, 1, 1), a1),
+-                       SIMD.Float32x4.add(
+-                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 2, 2, 2, 2), a2),
+-                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 8, out2);
++        interactive: true,
+ 
+-    var b3 = SIMD.Float32x4.load(b, 12);
+-    var out3 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                        SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 1, 1, 1, 1), a1),
+-                        SIMD.Float32x4.add(
+-                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 2, 2, 2, 2), a2),
+-                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 12, out3);
++        scrollZoom: true,
++        boxZoom: true,
++        dragRotate: true,
++        dragPan: true,
++        keyboard: true,
++        doubleClickZoom: true,
++        touchZoomRotate: true,
+ 
+-    return out;
+-};
++        bearingSnap: 7,
+ 
+-/**
+- * Multiplies two mat4's explicitly not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.scalar.multiply = function (out, a, b) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
++        hash: false,
+ 
+-    // Cache only the current line of the second matrix
+-    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++        attributionControl: true,
+ 
+-    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
+-    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++        failIfMajorPerformanceCaveat: false,
++        preserveDrawingBuffer: false
++    },
+ 
+-    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
+-    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    /**
++     * Adds a control to the map, calling `control.addTo(this)`.
++     *
++     * @param {Control} control
++     * @returns {Map} `this`
++     */
++    addControl: function(control) {
++        control.addTo(this);
++        return this;
++    },
+ 
+-    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
+-    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+-    return out;
+-};
++    /**
++     * Adds a style class to a map.
++     *
++     * @param {string} klass name of style class
++     * @param {StyleOptions} [options]
++     * @fires change
++     * @returns {Map} `this`
++     */
++    addClass: function(klass, options) {
++        if (this._classes.indexOf(klass) >= 0 || klass === '') return this;
++        this._classes.push(klass);
++        this._classOptions = options;
+ 
+-/**
+- * Multiplies two mat4's using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.multiply = glMatrix.USE_SIMD ? mat4.SIMD.multiply : mat4.scalar.multiply;
++        if (this.style) this.style.updateClasses();
++        return this._update(true);
++    },
+ 
+-/**
+- * Alias for {@link mat4.multiply}
+- * @function
+- */
+-mat4.mul = mat4.multiply;
++    /**
++     * Removes a style class from a map.
++     *
++     * @param {string} klass name of style class
++     * @param {StyleOptions} [options]
++     * @fires change
++     * @returns {Map} `this`
++     */
++    removeClass: function(klass, options) {
++        var i = this._classes.indexOf(klass);
++        if (i < 0 || klass === '') return this;
++        this._classes.splice(i, 1);
++        this._classOptions = options;
+ 
+-/**
+- * Translate a mat4 by the given vector not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
+- */
+-mat4.scalar.translate = function (out, a, v) {
+-    var x = v[0], y = v[1], z = v[2],
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23;
++        if (this.style) this.style.updateClasses();
++        return this._update(true);
++    },
+ 
+-    if (a === out) {
+-        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
+-        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
+-        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
+-        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
+-    } else {
+-        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++    /**
++     * Helper method to add more than one class.
++     *
++     * @param {Array<string>} klasses An array of class names
++     * @param {StyleOptions} [options]
++     * @fires change
++     * @returns {Map} `this`
++     */
++    setClasses: function(klasses, options) {
++        var uniqueClasses = {};
++        for (var i = 0; i < klasses.length; i++) {
++            if (klasses[i] !== '') uniqueClasses[klasses[i]] = true;
++        }
++        this._classes = Object.keys(uniqueClasses);
++        this._classOptions = options;
+ 
+-        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
+-        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
+-        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
++        if (this.style) this.style.updateClasses();
++        return this._update(true);
++    },
+ 
+-        out[12] = a00 * x + a10 * y + a20 * z + a[12];
+-        out[13] = a01 * x + a11 * y + a21 * z + a[13];
+-        out[14] = a02 * x + a12 * y + a22 * z + a[14];
+-        out[15] = a03 * x + a13 * y + a23 * z + a[15];
+-    }
++    /**
++     * Check whether a style class is active.
++     *
++     * @param {string} klass Name of style class
++     * @returns {boolean}
++     */
++    hasClass: function(klass) {
++        return this._classes.indexOf(klass) >= 0;
++    },
+ 
+-    return out;
+-};
++    /**
++     * Return an array of the current active style classes.
++     *
++     * @returns {boolean}
++     */
++    getClasses: function() {
++        return this._classes;
++    },
+ 
+-/**
+- * Translates a mat4 by the given vector using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.translate = function (out, a, v) {
+-    var a0 = SIMD.Float32x4.load(a, 0),
+-        a1 = SIMD.Float32x4.load(a, 4),
+-        a2 = SIMD.Float32x4.load(a, 8),
+-        a3 = SIMD.Float32x4.load(a, 12),
+-        vec = SIMD.Float32x4(v[0], v[1], v[2] , 0);
++    /**
++     * Detect the map's new width and height and resize it. Given
++     * the `container` of the map specified in the Map constructor,
++     * this reads the new width from the DOM: so this method is often
++     * called after the map's container is resized by another script
++     * or the map is shown after being initially hidden with CSS.
++     *
++     * @returns {Map} `this`
++     */
++    resize: function() {
++        var width = 0, height = 0;
+ 
+-    if (a !== out) {
+-        out[0] = a[0]; out[1] = a[1]; out[2] = a[2]; out[3] = a[3];
+-        out[4] = a[4]; out[5] = a[5]; out[6] = a[6]; out[7] = a[7];
+-        out[8] = a[8]; out[9] = a[9]; out[10] = a[10]; out[11] = a[11];
+-    }
++        if (this._container) {
++            width = this._container.offsetWidth || 400;
++            height = this._container.offsetHeight || 300;
++        }
+ 
+-    a0 = SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0));
+-    a1 = SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1));
+-    a2 = SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2));
++        this._canvas.resize(width, height);
++        this.transform.resize(width, height);
++        this.painter.resize(width, height);
+ 
+-    var t0 = SIMD.Float32x4.add(a0, SIMD.Float32x4.add(a1, SIMD.Float32x4.add(a2, a3)));
+-    SIMD.Float32x4.store(out, 12, t0);
++        return this
++            .fire('movestart')
++            .fire('move')
++            .fire('resize')
++            .fire('moveend');
++    },
+ 
+-    return out;
+-};
++    /**
++     * Get the map's geographical bounds.
++     *
++     * @returns {LngLatBounds}
++     */
++    getBounds: function() {
++        var bounds = new LngLatBounds(
++            this.transform.pointLocation(new Point(0, 0)),
++            this.transform.pointLocation(this.transform.size));
+ 
+-/**
+- * Translates a mat4 by the given vector using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
+- */
+-mat4.translate = glMatrix.USE_SIMD ? mat4.SIMD.translate : mat4.scalar.translate;
++        if (this.transform.angle || this.transform.pitch) {
++            bounds.extend(this.transform.pointLocation(new Point(this.transform.size.x, 0)));
++            bounds.extend(this.transform.pointLocation(new Point(0, this.transform.size.y)));
++        }
+ 
+-/**
+- * Scales the mat4 by the dimensions in the given vec3 not using vectorization
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- **/
+-mat4.scalar.scale = function(out, a, v) {
+-    var x = v[0], y = v[1], z = v[2];
++        return bounds;
++    },
+ 
+-    out[0] = a[0] * x;
+-    out[1] = a[1] * x;
+-    out[2] = a[2] * x;
+-    out[3] = a[3] * x;
+-    out[4] = a[4] * y;
+-    out[5] = a[5] * y;
+-    out[6] = a[6] * y;
+-    out[7] = a[7] * y;
+-    out[8] = a[8] * z;
+-    out[9] = a[9] * z;
+-    out[10] = a[10] * z;
+-    out[11] = a[11] * z;
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++    /**
++     * Set constraint on the map's geographical bounds. Pan or zoom operations that would result in
++     * displaying regions that fall outside of the bounds instead result in displaying the map at the
++     * closest point and/or zoom level of the requested operation that is within the max bounds.
++     *
++     * @param {LngLatBounds | Array<Array<number>> | null | undefined} lnglatbounds Desired max bounds of the map. If null or undefined, function removes any bounds constraints on the map.
++     * @returns {Map} `this`
++     */
++    setMaxBounds: function (lnglatbounds) {
++        if (lnglatbounds) {
++            var b = LngLatBounds.convert(lnglatbounds);
++            this.transform.lngRange = [b.getWest(), b.getEast()];
++            this.transform.latRange = [b.getSouth(), b.getNorth()];
++            this.transform._constrain();
++            this._update();
++        } else if (lnglatbounds === null || lnglatbounds === undefined) {
++            this.transform.lngRange = [];
++            this.transform.latRange = [];
++            this._update();
++        }
++        return this;
+ 
+-/**
+- * Scales the mat4 by the dimensions in the given vec3 using vectorization
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- **/
+-mat4.SIMD.scale = function(out, a, v) {
+-    var a0, a1, a2;
+-    var vec = SIMD.Float32x4(v[0], v[1], v[2], 0);
++    },
++    /**
++     * Set the map's minimum zoom level, and zooms map to that level if it is
++     * currently below it. If no parameter provided, unsets the current
++     * minimum zoom (sets it to 0)
++     *
++     * @param {number} minZoom Minimum zoom level. Must be between 0 and 20.
++     * @returns {Map} `this
++     */
++    setMinZoom: function(minZoom) {
+ 
+-    a0 = SIMD.Float32x4.load(a, 0);
+-    SIMD.Float32x4.store(
+-        out, 0, SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0)));
++        minZoom = minZoom === null || minZoom === undefined ? defaultMinZoom : minZoom;
+ 
+-    a1 = SIMD.Float32x4.load(a, 4);
+-    SIMD.Float32x4.store(
+-        out, 4, SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1)));
++        if (minZoom >= defaultMinZoom && minZoom <= this.transform.maxZoom) {
++            this.transform.minZoom = minZoom;
++            this._update();
+ 
+-    a2 = SIMD.Float32x4.load(a, 8);
+-    SIMD.Float32x4.store(
+-        out, 8, SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2)));
++            if (this.getZoom() < minZoom) this.setZoom(minZoom);
+ 
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++            return this;
+ 
+-/**
+- * Scales the mat4 by the dimensions in the given vec3 using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scale = glMatrix.USE_SIMD ? mat4.SIMD.scale : mat4.scalar.scale;
++        } else throw new Error('minZoom must be between ' + defaultMinZoom + ' and the current maxZoom, inclusive');
++    },
+ 
+-/**
+- * Rotates a mat4 by the given angle around the given axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @param {vec3} axis the axis to rotate around
+- * @returns {mat4} out
+- */
+-mat4.rotate = function (out, a, rad, axis) {
+-    var x = axis[0], y = axis[1], z = axis[2],
+-        len = Math.sqrt(x * x + y * y + z * z),
+-        s, c, t,
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23,
+-        b00, b01, b02,
+-        b10, b11, b12,
+-        b20, b21, b22;
++    /**
++     * Set the map's maximum zoom level, and zooms map to that level if it is
++     * currently above it. If no parameter provided, unsets the current
++     * maximum zoom (sets it to 20)
++     * @param {number} maxZoom Maximum zoom level. Must be between 0 and 20.
++     * @returns {Map} `this`
++     */
++    setMaxZoom: function(maxZoom) {
+ 
+-    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
++        maxZoom = maxZoom === null || maxZoom === undefined ? defaultMaxZoom : maxZoom;
++
++        if (maxZoom >= this.transform.minZoom && maxZoom <= defaultMaxZoom) {
++            this.transform.maxZoom = maxZoom;
++            this._update();
++
++            if (this.getZoom() > maxZoom) this.setZoom(maxZoom);
+ 
+-    len = 1 / len;
+-    x *= len;
+-    y *= len;
+-    z *= len;
++            return this;
+ 
+-    s = Math.sin(rad);
+-    c = Math.cos(rad);
+-    t = 1 - c;
++        } else throw new Error('maxZoom must be between the current minZoom and ' + defaultMaxZoom + ', inclusive');
++    },
++    /**
++     * Get pixel coordinates relative to the map container, given a geographical
++     * location.
++     *
++     * @param {LngLat} lnglat
++     * @returns {Object} `x` and `y` coordinates
++     */
++    project: function(lnglat) {
++        return this.transform.locationPoint(LngLat.convert(lnglat));
++    },
+ 
+-    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++    /**
++     * Get geographical coordinates, given pixel coordinates.
++     *
++     * @param {Array<number>} point [x, y] pixel coordinates
++     * @returns {LngLat}
++     */
++    unproject: function(point) {
++        return this.transform.pointLocation(Point.convert(point));
++    },
+ 
+-    // Construct the elements of the rotation matrix
+-    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
+-    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
+-    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
++    /**
++     * Query rendered features within a point or rectangle.
++     *
++     * @param {Point|Array<number>|Array<Point>|Array<Array<number>>} [pointOrBox] Either [x, y] pixel coordinates of a point, or [[x1, y1], [x2, y2]] pixel coordinates of opposite corners of bounding rectangle. Optional: use entire viewport if omitted.
++     * @param {Object} params
++     * @param {Array<string>} [params.layers] Only query features from layers with these layer IDs.
++     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
++     *
++     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features
++     * matching the query parameters. The GeoJSON properties of each feature are taken from
++     * the original source. Each feature object also contains a top-level `layer`
++     * property whose value is an object representing the style layer to which the
++     * feature belongs. Layout and paint properties in this object contain values
++     * which are fully evaluated for the given zoom level and feature.
++     *
++     * @example
++     * var features = map.queryRenderedFeatures([20, 35], { layers: ['my-layer-name'] });
++     *
++     * @example
++     * var features = map.queryRenderedFeatures([[10, 20], [30, 50]], { layers: ['my-layer-name'] });
++     */
++    queryRenderedFeatures: function(pointOrBox, params) {
++        if (!(pointOrBox instanceof Point || Array.isArray(pointOrBox))) {
++            params = pointOrBox;
++            pointOrBox = undefined;
++        }
++        var queryGeometry = this._makeQueryGeometry(pointOrBox);
++        return this.style.queryRenderedFeatures(queryGeometry, params, this.transform.zoom, this.transform.angle);
++    },
+ 
+-    // Perform rotation-specific matrix multiplication
+-    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
+-    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
+-    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
+-    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
+-    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
+-    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
+-    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
+-    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
+-    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
+-    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
+-    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
+-    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
++    _makeQueryGeometry: function(pointOrBox) {
++        if (pointOrBox === undefined) {
++            // bounds was omitted: use full viewport
++            pointOrBox = [
++                Point.convert([0, 0]),
++                Point.convert([this.transform.width, this.transform.height])
++            ];
++        }
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
+-    return out;
+-};
++        var queryGeometry;
++        var isPoint = pointOrBox instanceof Point || typeof pointOrBox[0] === 'number';
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scalar.rotateX = function (out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++        if (isPoint) {
++            var point = Point.convert(pointOrBox);
++            queryGeometry = [point];
++        } else {
++            var box = [Point.convert(pointOrBox[0]), Point.convert(pointOrBox[1])];
++            queryGeometry = [
++                box[0],
++                new Point(box[1].x, box[0].y),
++                box[1],
++                new Point(box[0].x, box[1].y),
++                box[0]
++            ];
++        }
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[0]  = a[0];
+-        out[1]  = a[1];
+-        out[2]  = a[2];
+-        out[3]  = a[3];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++        queryGeometry = queryGeometry.map(function(p) {
++            return this.transform.pointCoordinate(p);
++        }.bind(this));
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[4] = a10 * c + a20 * s;
+-    out[5] = a11 * c + a21 * s;
+-    out[6] = a12 * c + a22 * s;
+-    out[7] = a13 * c + a23 * s;
+-    out[8] = a20 * c - a10 * s;
+-    out[9] = a21 * c - a11 * s;
+-    out[10] = a22 * c - a12 * s;
+-    out[11] = a23 * c - a13 * s;
+-    return out;
+-};
++        return queryGeometry;
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.rotateX = function (out, a, rad) {
+-    var s = SIMD.Float32x4.splat(Math.sin(rad)),
+-        c = SIMD.Float32x4.splat(Math.cos(rad));
++    /**
++     * Get data from vector tiles as an array of GeoJSON Features.
++     *
++     * @param {string} sourceID source ID
++     * @param {Object} params
++     * @param {string} [params.sourceLayer] The name of the vector tile layer to get features from.
++     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
++     *
++     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features matching the query parameters. The GeoJSON properties of each feature are taken from the original source. Each feature object also contains a top-level `layer` property whose value is an object representing the style layer to which the feature belongs. Layout and paint properties in this object contain values which are fully evaluated for the given zoom level and feature.
++     */
++    querySourceFeatures: function(sourceID, params) {
++        return this.style.querySourceFeatures(sourceID, params);
++    },
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-      out[0]  = a[0];
+-      out[1]  = a[1];
+-      out[2]  = a[2];
+-      out[3]  = a[3];
+-      out[12] = a[12];
+-      out[13] = a[13];
+-      out[14] = a[14];
+-      out[15] = a[15];
+-    }
++    /**
++     * Replaces the map's style object with a new value. Unlike the `style`
++     * option in the Map constructor, this method only accepts an object
++     * of a new style, not a URL string.
++     *
++     * @param {Object} style A style object formatted as JSON
++     * @returns {Map} `this`
++     */
++    setStyle: function(style) {
++        if (this.style) {
++            this.style
++                .off('load', this._onStyleLoad)
++                .off('error', this._forwardStyleEvent)
++                .off('change', this._onStyleChange)
++                .off('source.add', this._onSourceAdd)
++                .off('source.remove', this._onSourceRemove)
++                .off('source.load', this._onSourceUpdate)
++                .off('source.error', this._forwardSourceEvent)
++                .off('source.change', this._onSourceUpdate)
++                .off('layer.add', this._forwardLayerEvent)
++                .off('layer.remove', this._forwardLayerEvent)
++                .off('layer.error', this._forwardLayerEvent)
++                .off('tile.add', this._forwardTileEvent)
++                .off('tile.remove', this._forwardTileEvent)
++                .off('tile.load', this._update)
++                .off('tile.error', this._forwardTileEvent)
++                .off('tile.stats', this._forwardTileEvent)
++                ._remove();
+ 
+-    // Perform axis-specific matrix multiplication
+-    var a_1 = SIMD.Float32x4.load(a, 4);
+-    var a_2 = SIMD.Float32x4.load(a, 8);
+-    SIMD.Float32x4.store(out, 4,
+-                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_2, s)));
+-    SIMD.Float32x4.store(out, 8,
+-                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_2, c), SIMD.Float32x4.mul(a_1, s)));
+-    return out;
+-};
++            this.off('rotate', this.style._redoPlacement);
++            this.off('pitch', this.style._redoPlacement);
++        }
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis using SIMD if availabe and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.rotateX = glMatrix.USE_SIMD ? mat4.SIMD.rotateX : mat4.scalar.rotateX;
++        if (!style) {
++            this.style = null;
++            return this;
++        } else if (style instanceof Style) {
++            this.style = style;
++        } else {
++            this.style = new Style(style, this.animationLoop);
++        }
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scalar.rotateY = function (out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++        this.style
++            .on('load', this._onStyleLoad)
++            .on('error', this._forwardStyleEvent)
++            .on('change', this._onStyleChange)
++            .on('source.add', this._onSourceAdd)
++            .on('source.remove', this._onSourceRemove)
++            .on('source.load', this._onSourceUpdate)
++            .on('source.error', this._forwardSourceEvent)
++            .on('source.change', this._onSourceUpdate)
++            .on('layer.add', this._forwardLayerEvent)
++            .on('layer.remove', this._forwardLayerEvent)
++            .on('layer.error', this._forwardLayerEvent)
++            .on('tile.add', this._forwardTileEvent)
++            .on('tile.remove', this._forwardTileEvent)
++            .on('tile.load', this._update)
++            .on('tile.error', this._forwardTileEvent)
++            .on('tile.stats', this._forwardTileEvent);
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[4]  = a[4];
+-        out[5]  = a[5];
+-        out[6]  = a[6];
+-        out[7]  = a[7];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++        this.on('rotate', this.style._redoPlacement);
++        this.on('pitch', this.style._redoPlacement);
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c - a20 * s;
+-    out[1] = a01 * c - a21 * s;
+-    out[2] = a02 * c - a22 * s;
+-    out[3] = a03 * c - a23 * s;
+-    out[8] = a00 * s + a20 * c;
+-    out[9] = a01 * s + a21 * c;
+-    out[10] = a02 * s + a22 * c;
+-    out[11] = a03 * s + a23 * c;
+-    return out;
+-};
++        return this;
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.rotateY = function (out, a, rad) {
+-    var s = SIMD.Float32x4.splat(Math.sin(rad)),
+-        c = SIMD.Float32x4.splat(Math.cos(rad));
++    /**
++     * Get a style object that can be used to recreate the map's style.
++     *
++     * @returns {Object} style
++     */
++    getStyle: function() {
++        return this.style.serialize();
++    },
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[4]  = a[4];
+-        out[5]  = a[5];
+-        out[6]  = a[6];
+-        out[7]  = a[7];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++    /**
++     * Add a source to the map style.
++     *
++     * @param {string} id ID of the source. Must not be used by any existing source.
++     * @param {Object} source source specification, following the
++     * [Mapbox GL Style Reference](https://www.mapbox.com/mapbox-gl-style-spec/#sources)
++     * @fires source.add
++     * @returns {Map} `this`
++     */
++    addSource: function(id, source) {
++        this.style.addSource(id, source);
++        this._update(true);
++        return this;
++    },
+ 
+-    // Perform axis-specific matrix multiplication
+-    var a_0 = SIMD.Float32x4.load(a, 0);
+-    var a_2 = SIMD.Float32x4.load(a, 8);
+-    SIMD.Float32x4.store(out, 0,
+-                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_2, s)));
+-    SIMD.Float32x4.store(out, 8,
+-                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, s), SIMD.Float32x4.mul(a_2, c)));
+-    return out;
+-};
++    /**
++     * Remove an existing source from the map style.
++     *
++     * @param {string} id ID of the source to remove
++     * @fires source.remove
++     * @returns {Map} `this`
++     */
++    removeSource: function(id) {
++        this.style.removeSource(id);
++        this._update(true);
++        return this;
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis if SIMD available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+- mat4.rotateY = glMatrix.USE_SIMD ? mat4.SIMD.rotateY : mat4.scalar.rotateY;
++    /**
++     * Return the style source object with the given `id`.
++     *
++     * @param {string} id source ID
++     * @returns {Object}
++     */
++    getSource: function(id) {
++        return this.style.getSource(id);
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scalar.rotateZ = function (out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7];
++    /**
++     * Add a layer to the map style. The layer will be inserted before the layer with
++     * ID `before`, or appended if `before` is omitted.
++     * @param {StyleLayer|Object} layer
++     * @param {string=} before  ID of an existing layer to insert before
++     * @fires layer.add
++     * @returns {Map} `this`
++     */
++    addLayer: function(layer, before) {
++        this.style.addLayer(layer, before);
++        this._update(true);
++        return this;
++    },
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[8]  = a[8];
+-        out[9]  = a[9];
+-        out[10] = a[10];
+-        out[11] = a[11];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++    /**
++     * Remove the layer with the given `id` from the map. Any layers which refer to the
++     * specified layer via a `ref` property are also removed.
++     *
++     * @param {string} id layer id
++     * @throws {Error} if no layer with the given `id` exists
++     * @fires layer.remove
++     * @returns {Map} `this`
++     */
++    removeLayer: function(id) {
++        this.style.removeLayer(id);
++        this._update(true);
++        return this;
++    },
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c + a10 * s;
+-    out[1] = a01 * c + a11 * s;
+-    out[2] = a02 * c + a12 * s;
+-    out[3] = a03 * c + a13 * s;
+-    out[4] = a10 * c - a00 * s;
+-    out[5] = a11 * c - a01 * s;
+-    out[6] = a12 * c - a02 * s;
+-    out[7] = a13 * c - a03 * s;
+-    return out;
+-};
++    /**
++     * Return the style layer object with the given `id`.
++     *
++     * @param {string} id layer id
++     * @returns {?Object} a layer, if one with the given `id` exists
++     */
++    getLayer: function(id) {
++        return this.style.getLayer(id);
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.rotateZ = function (out, a, rad) {
+-    var s = SIMD.Float32x4.splat(Math.sin(rad)),
+-        c = SIMD.Float32x4.splat(Math.cos(rad));
++    /**
++     * Set the filter for a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {Array} filter filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#types-filter)
++     * @returns {Map} `this`
++     * @example
++     * map.setFilter('my-layer', ['==', 'name', 'USA']);
++     */
++    setFilter: function(layer, filter) {
++        this.style.setFilter(layer, filter);
++        this._update(true);
++        return this;
++    },
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[8]  = a[8];
+-        out[9]  = a[9];
+-        out[10] = a[10];
+-        out[11] = a[11];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++    /**
++     * Set the zoom extent for a given style layer.
++     *
++     * @param {string} layerId ID of a layer
++     * @param {number} minzoom minimum zoom extent
++     * @param {number} maxzoom maximum zoom extent
++     * @returns {Map} `this`
++     * @example
++     * map.setLayerZoomRange('my-layer', 2, 5);
++     */
++    setLayerZoomRange: function(layerId, minzoom, maxzoom) {
++        this.style.setLayerZoomRange(layerId, minzoom, maxzoom);
++        this._update(true);
++        return this;
++    },
+ 
+-    // Perform axis-specific matrix multiplication
+-    var a_0 = SIMD.Float32x4.load(a, 0);
+-    var a_1 = SIMD.Float32x4.load(a, 4);
+-    SIMD.Float32x4.store(out, 0,
+-                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_1, s)));
+-    SIMD.Float32x4.store(out, 4,
+-                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_0, s)));
+-    return out;
+-};
++    /**
++     * Get the filter for a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @returns {Array} filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#filter)
++     */
++    getFilter: function(layer) {
++        return this.style.getFilter(layer);
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis if SIMD available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+- mat4.rotateZ = glMatrix.USE_SIMD ? mat4.SIMD.rotateZ : mat4.scalar.rotateZ;
++    /**
++     * Set the value of a paint property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a paint property
++     * @param {*} value value for the paint propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
++     * @param {string=} klass optional class specifier for the property
++     * @returns {Map} `this`
++     * @example
++     * map.setPaintProperty('my-layer', 'fill-color', '#faafee');
++     */
++    setPaintProperty: function(layer, name, value, klass) {
++        this.style.setPaintProperty(layer, name, value, klass);
++        this._update(true);
++        return this;
++    },
+ 
+-/**
+- * Creates a matrix from a vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, dest, vec);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {vec3} v Translation vector
+- * @returns {mat4} out
+- */
+-mat4.fromTranslation = function(out, v) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
+-    return out;
+-}
++    /**
++     * Get the value of a paint property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a paint property
++     * @param {string=} klass optional class specifier for the property
++     * @returns {*} value for the paint propery
++     */
++    getPaintProperty: function(layer, name, klass) {
++        return this.style.getPaintProperty(layer, name, klass);
++    },
+ 
+-/**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.scale(dest, dest, vec);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {vec3} v Scaling vector
+- * @returns {mat4} out
+- */
+-mat4.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = v[1];
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = v[2];
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++    /**
++     * Set the value of a layout property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a layout property
++     * @param {*} value value for the layout propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
++     * @returns {Map} `this`
++     * @example
++     * map.setLayoutProperty('my-layer', 'visibility', 'none');
++     */
++    setLayoutProperty: function(layer, name, value) {
++        this.style.setLayoutProperty(layer, name, value);
++        this._update(true);
++        return this;
++    },
+ 
+-/**
+- * Creates a matrix from a given angle around a given axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotate(dest, dest, rad, axis);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @param {vec3} axis the axis to rotate around
+- * @returns {mat4} out
+- */
+-mat4.fromRotation = function(out, rad, axis) {
+-    var x = axis[0], y = axis[1], z = axis[2],
+-        len = Math.sqrt(x * x + y * y + z * z),
+-        s, c, t;
++    /**
++     * Get the value of a layout property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a layout property
++     * @param {string=} klass optional class specifier for the property
++     * @returns {*} value for the layout propery
++     */
++    getLayoutProperty: function(layer, name) {
++        return this.style.getLayoutProperty(layer, name);
++    },
+ 
+-    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
++    /**
++     * Get the Map's container as an HTML element
++     * @returns {HTMLElement} container
++     */
++    getContainer: function() {
++        return this._container;
++    },
+ 
+-    len = 1 / len;
+-    x *= len;
+-    y *= len;
+-    z *= len;
++    /**
++     * Get the container for the map `canvas` element.
++     *
++     * If you want to add non-GL overlays to the map, you should append them to this element. This
++     * is the element to which event bindings for map interactivity such as panning and zooming are
++     * attached. It will receive bubbled events for child elements such as the `canvas`, but not for
++     * map controls.
++     *
++     * @returns {HTMLElement} container
++     */
++    getCanvasContainer: function() {
++        return this._canvasContainer;
++    },
+ 
+-    s = Math.sin(rad);
+-    c = Math.cos(rad);
+-    t = 1 - c;
++    /**
++     * Get the Map's canvas as an HTML canvas
++     * @returns {HTMLElement} canvas
++     */
++    getCanvas: function() {
++        return this._canvas.getElement();
++    },
+ 
+-    // Perform rotation-specific matrix multiplication
+-    out[0] = x * x * t + c;
+-    out[1] = y * x * t + z * s;
+-    out[2] = z * x * t - y * s;
+-    out[3] = 0;
+-    out[4] = x * y * t - z * s;
+-    out[5] = y * y * t + c;
+-    out[6] = z * y * t + x * s;
+-    out[7] = 0;
+-    out[8] = x * z * t + y * s;
+-    out[9] = y * z * t - x * s;
+-    out[10] = z * z * t + c;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++    _setupContainer: function() {
++        var container = this._container;
++        container.classList.add('mapboxgl-map');
+ 
+-/**
+- * Creates a matrix from the given angle around the X axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotateX(dest, dest, rad);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.fromXRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
++        var canvasContainer = this._canvasContainer = DOM.create('div', 'mapboxgl-canvas-container', container);
++        if (this._interactive) {
++            canvasContainer.classList.add('mapboxgl-interactive');
++        }
++        this._canvas = new Canvas(this, canvasContainer);
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0]  = 1;
+-    out[1]  = 0;
+-    out[2]  = 0;
+-    out[3]  = 0;
+-    out[4] = 0;
+-    out[5] = c;
+-    out[6] = s;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = -s;
+-    out[10] = c;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++        var controlContainer = this._controlContainer = DOM.create('div', 'mapboxgl-control-container', container);
++        var corners = this._controlCorners = {};
++        ['top-left', 'top-right', 'bottom-left', 'bottom-right'].forEach(function (pos) {
++            corners[pos] = DOM.create('div', 'mapboxgl-ctrl-' + pos, controlContainer);
++        });
++    },
+ 
+-/**
+- * Creates a matrix from the given angle around the Y axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotateY(dest, dest, rad);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.fromYRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
++    _setupPainter: function() {
++        var gl = this._canvas.getWebGLContext({
++            failIfMajorPerformanceCaveat: this._failIfMajorPerformanceCaveat,
++            preserveDrawingBuffer: this._preserveDrawingBuffer
++        });
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0]  = c;
+-    out[1]  = 0;
+-    out[2]  = -s;
+-    out[3]  = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = s;
+-    out[9] = 0;
+-    out[10] = c;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++        if (!gl) {
++            console.error('Failed to initialize WebGL');
++            return;
++        }
+ 
+-/**
+- * Creates a matrix from the given angle around the Z axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotateZ(dest, dest, rad);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.fromZRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
++        this.painter = new Painter(gl, this.transform);
++    },
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0]  = c;
+-    out[1]  = s;
+-    out[2]  = 0;
+-    out[3]  = 0;
+-    out[4] = -s;
+-    out[5] = c;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++    /**
++     * WebGL Context Lost event.
++     *
++     * @event webglcontextlost
++     * @memberof Map
++     * @instance
++     * @type {Object}
++     * @property {Event} originalEvent the original DOM event
++     */
++    _contextLost: function(event) {
++        event.preventDefault();
++        if (this._frameId) {
++            browser.cancelFrame(this._frameId);
++        }
++        this.fire("webglcontextlost", {originalEvent: event});
++    },
+ 
+-/**
+- * Creates a matrix from a quaternion rotation and vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @returns {mat4} out
+- */
+-mat4.fromRotationTranslation = function (out, q, v) {
+-    // Quaternion math
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++    /**
++     * WebGL Context Restored event.
++     *
++     * @event webglcontextrestored
++     * @memberof Map
++     * @instance
++     * @type {Object}
++     */
++    _contextRestored: function(event) {
++        this._setupPainter();
++        this.resize();
++        this._update();
++        this.fire("webglcontextrestored", {originalEvent: event});
++    },
+ 
+-        xx = x * x2,
+-        xy = x * y2,
+-        xz = x * z2,
+-        yy = y * y2,
+-        yz = y * z2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++    /**
++     * Is this map fully loaded? If the style isn't loaded
++     * or it has a change to the sources or style that isn't
++     * propagated to its style, return false.
++     *
++     * @returns {boolean} whether the map is loaded
++     */
++    loaded: function() {
++        if (this._styleDirty || this._sourcesDirty)
++            return false;
++        if (!this.style || !this.style.loaded())
++            return false;
++        return true;
++    },
+ 
+-    out[0] = 1 - (yy + zz);
+-    out[1] = xy + wz;
+-    out[2] = xz - wy;
+-    out[3] = 0;
+-    out[4] = xy - wz;
+-    out[5] = 1 - (xx + zz);
+-    out[6] = yz + wx;
+-    out[7] = 0;
+-    out[8] = xz + wy;
+-    out[9] = yz - wx;
+-    out[10] = 1 - (xx + yy);
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
++    /**
++     * Update this map's style and sources, and re-render the map.
++     *
++     * @param {boolean} updateStyle mark the map's style for reprocessing as
++     * well as its sources
++     * @returns {Map} this
++     * @private
++     */
++    _update: function(updateStyle) {
++        if (!this.style) return this;
+ 
+-    return out;
+-};
++        this._styleDirty = this._styleDirty || updateStyle;
++        this._sourcesDirty = true;
+ 
+-/**
+- * Returns the translation vector component of a transformation
+- *  matrix. If a matrix is built with fromRotationTranslation,
+- *  the returned vector will be the same as the translation vector
+- *  originally supplied.
+- * @param  {vec3} out Vector to receive translation component
+- * @param  {mat4} mat Matrix to be decomposed (input)
+- * @return {vec3} out
+- */
+-mat4.getTranslation = function (out, mat) {
+-  out[0] = mat[12];
+-  out[1] = mat[13];
+-  out[2] = mat[14];
++        this._rerender();
+ 
+-  return out;
+-};
++        return this;
++    },
+ 
+-/**
+- * Returns a quaternion representing the rotational component
+- *  of a transformation matrix. If a matrix is built with
+- *  fromRotationTranslation, the returned quaternion will be the
+- *  same as the quaternion originally supplied.
+- * @param {quat} out Quaternion to receive the rotation component
+- * @param {mat4} mat Matrix to be decomposed (input)
+- * @return {quat} out
+- */
+-mat4.getRotation = function (out, mat) {
+-  // Algorithm taken from http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
+-  var trace = mat[0] + mat[5] + mat[10];
+-  var S = 0;
++    /**
++     * Call when a (re-)render of the map is required, e.g. when the
++     * user panned or zoomed,f or new data is available.
++     * @returns {Map} this
++     * @private
++     */
++    _render: function() {
++        if (this.style && this._styleDirty) {
++            this._styleDirty = false;
++            this.style.update(this._classes, this._classOptions);
++            this._classOptions = null;
++            this.style._recalculate(this.transform.zoom);
++        }
+ 
+-  if (trace > 0) { 
+-    S = Math.sqrt(trace + 1.0) * 2;
+-    out[3] = 0.25 * S;
+-    out[0] = (mat[6] - mat[9]) / S;
+-    out[1] = (mat[8] - mat[2]) / S; 
+-    out[2] = (mat[1] - mat[4]) / S; 
+-  } else if ((mat[0] > mat[5])&(mat[0] > mat[10])) { 
+-    S = Math.sqrt(1.0 + mat[0] - mat[5] - mat[10]) * 2;
+-    out[3] = (mat[6] - mat[9]) / S;
+-    out[0] = 0.25 * S;
+-    out[1] = (mat[1] + mat[4]) / S; 
+-    out[2] = (mat[8] + mat[2]) / S; 
+-  } else if (mat[5] > mat[10]) { 
+-    S = Math.sqrt(1.0 + mat[5] - mat[0] - mat[10]) * 2;
+-    out[3] = (mat[8] - mat[2]) / S;
+-    out[0] = (mat[1] + mat[4]) / S; 
+-    out[1] = 0.25 * S;
+-    out[2] = (mat[6] + mat[9]) / S; 
+-  } else { 
+-    S = Math.sqrt(1.0 + mat[10] - mat[0] - mat[5]) * 2;
+-    out[3] = (mat[1] - mat[4]) / S;
+-    out[0] = (mat[8] + mat[2]) / S;
+-    out[1] = (mat[6] + mat[9]) / S;
+-    out[2] = 0.25 * S;
+-  }
++        if (this.style && this._sourcesDirty) {
++            this._sourcesDirty = false;
++            this.style._updateSources(this.transform);
++        }
+ 
+-  return out;
+-};
++        this.painter.render(this.style, {
++            debug: this.showTileBoundaries,
++            showOverdrawInspector: this._showOverdrawInspector,
++            vertices: this.vertices,
++            rotating: this.rotating,
++            zooming: this.zooming
++        });
+ 
+-/**
+- * Creates a matrix from a quaternion rotation, vector translation and vector scale
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *     mat4.scale(dest, scale)
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @param {vec3} s Scaling vector
+- * @returns {mat4} out
+- */
+-mat4.fromRotationTranslationScale = function (out, q, v, s) {
+-    // Quaternion math
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++        this.fire('render');
+ 
+-        xx = x * x2,
+-        xy = x * y2,
+-        xz = x * z2,
+-        yy = y * y2,
+-        yz = y * z2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2,
+-        sx = s[0],
+-        sy = s[1],
+-        sz = s[2];
++        if (this.loaded() && !this._loaded) {
++            this._loaded = true;
++            this.fire('load');
++        }
+ 
+-    out[0] = (1 - (yy + zz)) * sx;
+-    out[1] = (xy + wz) * sx;
+-    out[2] = (xz - wy) * sx;
+-    out[3] = 0;
+-    out[4] = (xy - wz) * sy;
+-    out[5] = (1 - (xx + zz)) * sy;
+-    out[6] = (yz + wx) * sy;
+-    out[7] = 0;
+-    out[8] = (xz + wy) * sz;
+-    out[9] = (yz - wx) * sz;
+-    out[10] = (1 - (xx + yy)) * sz;
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
++        this._frameId = null;
+ 
+-    return out;
+-};
++        if (!this.animationLoop.stopped()) {
++            this._styleDirty = true;
++        }
+ 
+-/**
+- * Creates a matrix from a quaternion rotation, vector translation and vector scale, rotating and scaling around the given origin
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     mat4.translate(dest, origin);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *     mat4.scale(dest, scale)
+- *     mat4.translate(dest, negativeOrigin);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @param {vec3} s Scaling vector
+- * @param {vec3} o The origin vector around which to scale and rotate
+- * @returns {mat4} out
+- */
+-mat4.fromRotationTranslationScaleOrigin = function (out, q, v, s, o) {
+-  // Quaternion math
+-  var x = q[0], y = q[1], z = q[2], w = q[3],
+-      x2 = x + x,
+-      y2 = y + y,
+-      z2 = z + z,
++        if (this._sourcesDirty || this._repaint || !this.animationLoop.stopped()) {
++            this._rerender();
++        }
+ 
+-      xx = x * x2,
+-      xy = x * y2,
+-      xz = x * z2,
+-      yy = y * y2,
+-      yz = y * z2,
+-      zz = z * z2,
+-      wx = w * x2,
+-      wy = w * y2,
+-      wz = w * z2,
++        return this;
++    },
+ 
+-      sx = s[0],
+-      sy = s[1],
+-      sz = s[2],
++    /**
++     * Destroys the map's underlying resources, including web workers and DOM elements. Afterwards,
++     * you must not call any further methods on this Map instance.
++     *
++     * @returns {undefined}
++     */
++    remove: function() {
++        if (this._hash) this._hash.remove();
++        browser.cancelFrame(this._frameId);
++        this.setStyle(null);
++        if (typeof window !== 'undefined') {
++            window.removeEventListener('resize', this._onWindowResize, false);
++        }
++        removeNode(this._canvasContainer);
++        removeNode(this._controlContainer);
++        this._container.classList.remove('mapboxgl-map');
++    },
+ 
+-      ox = o[0],
+-      oy = o[1],
+-      oz = o[2];
++    /**
++     * A default error handler for `style.error`, `source.error`, `layer.error`,
++     * and `tile.error` events.
++     * It logs the error via `console.error`.
++     *
++     * @example
++     * // Disable the default error handler
++     * map.off('style.error', map.onError);
++     * map.off('source.error', map.onError);
++     * map.off('tile.error', map.onError);
++     * map.off('layer.error', map.onError);
++     */
++    onError: function(e) {
++        console.error(e.error);
++    },
+ 
+-  out[0] = (1 - (yy + zz)) * sx;
+-  out[1] = (xy + wz) * sx;
+-  out[2] = (xz - wy) * sx;
+-  out[3] = 0;
+-  out[4] = (xy - wz) * sy;
+-  out[5] = (1 - (xx + zz)) * sy;
+-  out[6] = (yz + wx) * sy;
+-  out[7] = 0;
+-  out[8] = (xz + wy) * sz;
+-  out[9] = (yz - wx) * sz;
+-  out[10] = (1 - (xx + yy)) * sz;
+-  out[11] = 0;
+-  out[12] = v[0] + ox - (out[0] * ox + out[4] * oy + out[8] * oz);
+-  out[13] = v[1] + oy - (out[1] * ox + out[5] * oy + out[9] * oz);
+-  out[14] = v[2] + oz - (out[2] * ox + out[6] * oy + out[10] * oz);
+-  out[15] = 1;
++    _rerender: function() {
++        if (this.style && !this._frameId) {
++            this._frameId = browser.frame(this._render);
++        }
++    },
+ 
+-  return out;
+-};
++    _forwardStyleEvent: function(e) {
++        this.fire('style.' + e.type, util.extend({style: e.target}, e));
++    },
+ 
+-/**
+- * Calculates a 4x4 matrix from the given quaternion
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat} q Quaternion to create matrix from
+- *
+- * @returns {mat4} out
+- */
+-mat4.fromQuat = function (out, q) {
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++    _forwardSourceEvent: function(e) {
++        this.fire(e.type, util.extend({style: e.target}, e));
++    },
+ 
+-        xx = x * x2,
+-        yx = y * x2,
+-        yy = y * y2,
+-        zx = z * x2,
+-        zy = z * y2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++    _forwardLayerEvent: function(e) {
++        this.fire(e.type, util.extend({style: e.target}, e));
++    },
+ 
+-    out[0] = 1 - yy - zz;
+-    out[1] = yx + wz;
+-    out[2] = zx - wy;
+-    out[3] = 0;
++    _forwardTileEvent: function(e) {
++        this.fire(e.type, util.extend({style: e.target}, e));
++    },
+ 
+-    out[4] = yx - wz;
+-    out[5] = 1 - xx - zz;
+-    out[6] = zy + wx;
+-    out[7] = 0;
++    _onStyleLoad: function(e) {
++        if (this.transform.unmodified) {
++            this.jumpTo(this.style.stylesheet);
++        }
++        this.style.update(this._classes, {transition: false});
++        this._forwardStyleEvent(e);
++    },
+ 
+-    out[8] = zx + wy;
+-    out[9] = zy - wx;
+-    out[10] = 1 - xx - yy;
+-    out[11] = 0;
++    _onStyleChange: function(e) {
++        this._update(true);
++        this._forwardStyleEvent(e);
++    },
+ 
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
++    _onSourceAdd: function(e) {
++        var source = e.source;
++        if (source.onAdd)
++            source.onAdd(this);
++        this._forwardSourceEvent(e);
++    },
+ 
+-    return out;
+-};
++    _onSourceRemove: function(e) {
++        var source = e.source;
++        if (source.onRemove)
++            source.onRemove(this);
++        this._forwardSourceEvent(e);
++    },
+ 
+-/**
+- * Generates a frustum matrix with the given bounds
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {Number} left Left bound of the frustum
+- * @param {Number} right Right bound of the frustum
+- * @param {Number} bottom Bottom bound of the frustum
+- * @param {Number} top Top bound of the frustum
+- * @param {Number} near Near bound of the frustum
+- * @param {Number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-mat4.frustum = function (out, left, right, bottom, top, near, far) {
+-    var rl = 1 / (right - left),
+-        tb = 1 / (top - bottom),
+-        nf = 1 / (near - far);
+-    out[0] = (near * 2) * rl;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = (near * 2) * tb;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = (right + left) * rl;
+-    out[9] = (top + bottom) * tb;
+-    out[10] = (far + near) * nf;
+-    out[11] = -1;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = (far * near * 2) * nf;
+-    out[15] = 0;
+-    return out;
+-};
++    _onSourceUpdate: function(e) {
++        this._update();
++        this._forwardSourceEvent(e);
++    },
+ 
+-/**
+- * Generates a perspective projection matrix with the given bounds
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {number} fovy Vertical field of view in radians
+- * @param {number} aspect Aspect ratio. typically viewport width/height
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-mat4.perspective = function (out, fovy, aspect, near, far) {
+-    var f = 1.0 / Math.tan(fovy / 2),
+-        nf = 1 / (near - far);
+-    out[0] = f / aspect;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = f;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = (far + near) * nf;
+-    out[11] = -1;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = (2 * far * near) * nf;
+-    out[15] = 0;
+-    return out;
+-};
++    _onWindowResize: function() {
++        this.stop().resize()._update();
++    }
++});
+ 
+-/**
+- * Generates a perspective projection matrix with the given field of view.
+- * This is primarily useful for generating projection matrices to be used
+- * with the still experiemental WebVR API.
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {Object} fov Object containing the following values: upDegrees, downDegrees, leftDegrees, rightDegrees
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-mat4.perspectiveFromFieldOfView = function (out, fov, near, far) {
+-    var upTan = Math.tan(fov.upDegrees * Math.PI/180.0),
+-        downTan = Math.tan(fov.downDegrees * Math.PI/180.0),
+-        leftTan = Math.tan(fov.leftDegrees * Math.PI/180.0),
+-        rightTan = Math.tan(fov.rightDegrees * Math.PI/180.0),
+-        xScale = 2.0 / (leftTan + rightTan),
+-        yScale = 2.0 / (upTan + downTan);
++util.extendAll(Map.prototype, /** @lends Map.prototype */{
+ 
+-    out[0] = xScale;
+-    out[1] = 0.0;
+-    out[2] = 0.0;
+-    out[3] = 0.0;
+-    out[4] = 0.0;
+-    out[5] = yScale;
+-    out[6] = 0.0;
+-    out[7] = 0.0;
+-    out[8] = -((leftTan - rightTan) * xScale * 0.5);
+-    out[9] = ((upTan - downTan) * yScale * 0.5);
+-    out[10] = far / (near - far);
+-    out[11] = -1.0;
+-    out[12] = 0.0;
+-    out[13] = 0.0;
+-    out[14] = (far * near) / (near - far);
+-    out[15] = 0.0;
+-    return out;
++    /**
++     * Draw an outline around each rendered tile for debugging.
++     *
++     * @name showTileBoundaries
++     * @type {boolean}
++     */
++    _showTileBoundaries: false,
++    get showTileBoundaries() { return this._showTileBoundaries; },
++    set showTileBoundaries(value) {
++        if (this._showTileBoundaries === value) return;
++        this._showTileBoundaries = value;
++        this._update();
++    },
++
++    /**
++     * Draw boxes around all symbols in the data source, showing which were
++     * rendered and which were hidden due to collisions with other symbols for
++     * style debugging.
++     *
++     * @name showCollisionBoxes
++     * @type {boolean}
++     */
++    _showCollisionBoxes: false,
++    get showCollisionBoxes() { return this._showCollisionBoxes; },
++    set showCollisionBoxes(value) {
++        if (this._showCollisionBoxes === value) return;
++        this._showCollisionBoxes = value;
++        this.style._redoPlacement();
++    },
++
++    /*
++     * Show how many times each fragment has been shaded. White fragments have
++     * been shaded 8 or more times. Black fragments have been shaded 0 times.
++     *
++     * @name showOverdraw
++     * @type {boolean}
++     */
++    _showOverdrawInspector: false,
++    get showOverdrawInspector() { return this._showOverdrawInspector; },
++    set showOverdrawInspector(value) {
++        if (this._showOverdrawInspector === value) return;
++        this._showOverdrawInspector = value;
++        this._update();
++    },
++
++    /**
++     * Enable continuous repaint to analyze performance.
++     *
++     * @name repaint
++     * @type {boolean}
++     */
++    _repaint: false,
++    get repaint() { return this._repaint; },
++    set repaint(value) { this._repaint = value; this._update(); },
++
++    // show vertices
++    _vertices: false,
++    get vertices() { return this._vertices; },
++    set vertices(value) { this._vertices = value; this._update(); }
++});
++
++function removeNode(node) {
++    if (node.parentNode) {
++        node.parentNode.removeChild(node);
++    }
+ }
+ 
+ /**
+- * Generates a orthogonal projection matrix with the given bounds
++ * Options common to Map#addClass, Map#removeClass, and Map#setClasses, controlling
++ * whether or not to smoothly transition property changes triggered by the class change.
+  *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {number} left Left bound of the frustum
+- * @param {number} right Right bound of the frustum
+- * @param {number} bottom Bottom bound of the frustum
+- * @param {number} top Top bound of the frustum
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
++ * @typedef {Object} StyleOptions
++ * @property {boolean} transition
+  */
+-mat4.ortho = function (out, left, right, bottom, top, near, far) {
+-    var lr = 1 / (left - right),
+-        bt = 1 / (bottom - top),
+-        nf = 1 / (near - far);
+-    out[0] = -2 * lr;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = -2 * bt;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 2 * nf;
+-    out[11] = 0;
+-    out[12] = (left + right) * lr;
+-    out[13] = (top + bottom) * bt;
+-    out[14] = (far + near) * nf;
+-    out[15] = 1;
+-    return out;
+-};
++
++ /**
++  * This event is fired whenever the map is drawn to the screen because of
++  *
++  *  - a change in map position, zoom, pitch, or bearing
++  *  - a change to the map style
++  *  - a change to a GeoJSON source
++  *  - a vector tile, GeoJSON file, glyph, or sprite being loaded
++  *
++  * @event render
++  * @memberof Map
++  * @instance
++  */
++
++},{"../geo/lng_lat":269,"../geo/lng_lat_bounds":270,"../geo/transform":271,"../render/painter":284,"../style/animation_loop":300,"../style/style":303,"../util/browser":348,"../util/canvas":349,"../util/dom":351,"../util/evented":354,"../util/util":362,"./camera":330,"./control/attribution":331,"./hash":342,"./interaction":343,"point-geometry":400}],345:[function(require,module,exports){
++'use strict';
++
++module.exports = Popup;
++
++var util = require('../util/util');
++var Evented = require('../util/evented');
++var DOM = require('../util/dom');
++var LngLat = require('../geo/lng_lat');
+ 
+ /**
+- * Generates a look-at matrix with the given eye position, focal point, and up axis
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {vec3} eye Position of the viewer
+- * @param {vec3} center Point the viewer is looking at
+- * @param {vec3} up vec3 pointing up
+- * @returns {mat4} out
+- */
+-mat4.lookAt = function (out, eye, center, up) {
+-    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
+-        eyex = eye[0],
+-        eyey = eye[1],
+-        eyez = eye[2],
+-        upx = up[0],
+-        upy = up[1],
+-        upz = up[2],
+-        centerx = center[0],
+-        centery = center[1],
+-        centerz = center[2];
++ * Creates a popup component
++ * @class Popup
++ * @param {Object} options
++ * @param {boolean} options.closeButton whether to show a close button in the
++ * top right corner of the popup.
++ * @param {boolean} options.closeOnClick whether to close the popup when the
++ * map is clicked.
++ * @param {string} options.anchor - One of "top", "bottom", "left", "right", "top-left",
++ * "top-right", "bottom-left", or "bottom-right", describing where the popup's anchor
++ * relative to the coordinate set via `setLngLat`.
++ * @example
++ * var tooltip = new mapboxgl.Popup()
++ *   .setLngLat(e.lngLat)
++ *   .setHTML("<h1>Hello World!</h1>")
++ *   .addTo(map);
++ */
++function Popup(options) {
++    util.setOptions(this, options);
++    util.bindAll([
++        '_update',
++        '_onClickClose'],
++        this);
++}
+ 
+-    if (Math.abs(eyex - centerx) < glMatrix.EPSILON &&
+-        Math.abs(eyey - centery) < glMatrix.EPSILON &&
+-        Math.abs(eyez - centerz) < glMatrix.EPSILON) {
+-        return mat4.identity(out);
+-    }
++Popup.prototype = util.inherit(Evented, /** @lends Popup.prototype */{
++    options: {
++        closeButton: true,
++        closeOnClick: true
++    },
+ 
+-    z0 = eyex - centerx;
+-    z1 = eyey - centery;
+-    z2 = eyez - centerz;
++    /**
++     * Attaches the popup to a map
++     * @param {Map} map
++     * @returns {Popup} `this`
++     */
++    addTo: function(map) {
++        this._map = map;
++        this._map.on('move', this._update);
++        if (this.options.closeOnClick) {
++            this._map.on('click', this._onClickClose);
++        }
++        this._update();
++        return this;
++    },
+ 
+-    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
+-    z0 *= len;
+-    z1 *= len;
+-    z2 *= len;
++    /**
++     * Removes the popup from a map
++     * @example
++     * var popup = new mapboxgl.Popup().addTo(map);
++     * popup.remove();
++     * @returns {Popup} `this`
++     */
++    remove: function() {
++        if (this._content && this._content.parentNode) {
++            this._content.parentNode.removeChild(this._content);
++        }
+ 
+-    x0 = upy * z2 - upz * z1;
+-    x1 = upz * z0 - upx * z2;
+-    x2 = upx * z1 - upy * z0;
+-    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
+-    if (!len) {
+-        x0 = 0;
+-        x1 = 0;
+-        x2 = 0;
+-    } else {
+-        len = 1 / len;
+-        x0 *= len;
+-        x1 *= len;
+-        x2 *= len;
+-    }
++        if (this._container) {
++            this._container.parentNode.removeChild(this._container);
++            delete this._container;
++        }
+ 
+-    y0 = z1 * x2 - z2 * x1;
+-    y1 = z2 * x0 - z0 * x2;
+-    y2 = z0 * x1 - z1 * x0;
++        if (this._map) {
++            this._map.off('move', this._update);
++            this._map.off('click', this._onClickClose);
++            delete this._map;
++        }
+ 
+-    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
+-    if (!len) {
+-        y0 = 0;
+-        y1 = 0;
+-        y2 = 0;
+-    } else {
+-        len = 1 / len;
+-        y0 *= len;
+-        y1 *= len;
+-        y2 *= len;
+-    }
++        return this;
++    },
+ 
+-    out[0] = x0;
+-    out[1] = y0;
+-    out[2] = z0;
+-    out[3] = 0;
+-    out[4] = x1;
+-    out[5] = y1;
+-    out[6] = z1;
+-    out[7] = 0;
+-    out[8] = x2;
+-    out[9] = y2;
+-    out[10] = z2;
+-    out[11] = 0;
+-    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
+-    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
+-    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
+-    out[15] = 1;
++    /**
++     * Get the popup's geographical location
++     * @returns {LngLat}
++     */
++    getLngLat: function() {
++        return this._lngLat;
++    },
+ 
+-    return out;
+-};
++    /**
++     * Set the popup's geographical position and move it.
++     * @param {LngLat} lnglat
++     * @returns {Popup} `this`
++     */
++    setLngLat: function(lnglat) {
++        this._lngLat = LngLat.convert(lnglat);
++        this._update();
++        return this;
++    },
+ 
+-/**
+- * Returns a string representation of a mat4
+- *
+- * @param {mat4} mat matrix to represent as a string
+- * @returns {String} string representation of the matrix
+- */
+-mat4.str = function (a) {
+-    return 'mat4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ', ' +
+-                    a[4] + ', ' + a[5] + ', ' + a[6] + ', ' + a[7] + ', ' +
+-                    a[8] + ', ' + a[9] + ', ' + a[10] + ', ' + a[11] + ', ' +
+-                    a[12] + ', ' + a[13] + ', ' + a[14] + ', ' + a[15] + ')';
+-};
++    /**
++     * Fill a popup element with text only content. This creates a text node
++     * in the DOM, so it cannot end up appending raw HTML. Use this method
++     * if you want an added level of security against XSS if the popup
++     * content is user-provided.
++     * @param {string} text
++     * @returns {Popup} `this`
++     * @example
++     * var tooltip = new mapboxgl.Popup()
++     *   .setLngLat(e.lngLat)
++     *   .setText('Hello, world!')
++     *   .addTo(map);
++     */
++    setText: function(text) {
++        return this.setDOMContent(document.createTextNode(text));
++    },
+ 
+-/**
+- * Returns Frobenius norm of a mat4
+- *
+- * @param {mat4} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
+- */
+-mat4.frob = function (a) {
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2) + Math.pow(a[9], 2) + Math.pow(a[10], 2) + Math.pow(a[11], 2) + Math.pow(a[12], 2) + Math.pow(a[13], 2) + Math.pow(a[14], 2) + Math.pow(a[15], 2) ))
+-};
++    /**
++     * Fill a popup element with HTML content, provided as a string.
++     * @param {string} html
++     * @returns {Popup} `this`
++     */
++    setHTML: function(html) {
++        var frag = document.createDocumentFragment();
++        var temp = document.createElement('body'), child;
++        temp.innerHTML = html;
++        while (true) {
++            child = temp.firstChild;
++            if (!child) break;
++            frag.appendChild(child);
++        }
+ 
+-/**
+- * Adds two mat4's
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    out[4] = a[4] + b[4];
+-    out[5] = a[5] + b[5];
+-    out[6] = a[6] + b[6];
+-    out[7] = a[7] + b[7];
+-    out[8] = a[8] + b[8];
+-    out[9] = a[9] + b[9];
+-    out[10] = a[10] + b[10];
+-    out[11] = a[11] + b[11];
+-    out[12] = a[12] + b[12];
+-    out[13] = a[13] + b[13];
+-    out[14] = a[14] + b[14];
+-    out[15] = a[15] + b[15];
+-    return out;
+-};
++        return this.setDOMContent(frag);
++    },
+ 
+-/**
+- * Subtracts matrix b from matrix a
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    out[4] = a[4] - b[4];
+-    out[5] = a[5] - b[5];
+-    out[6] = a[6] - b[6];
+-    out[7] = a[7] - b[7];
+-    out[8] = a[8] - b[8];
+-    out[9] = a[9] - b[9];
+-    out[10] = a[10] - b[10];
+-    out[11] = a[11] - b[11];
+-    out[12] = a[12] - b[12];
+-    out[13] = a[13] - b[13];
+-    out[14] = a[14] - b[14];
+-    out[15] = a[15] - b[15];
+-    return out;
+-};
++    /**
++     * Fill a popup element with DOM content
++     * @param {Node} htmlNode Popup content as a DOM node
++     * @returns {Popup} `this`
++     * @example
++     * // create an element with the popup content
++     * var div = document.createElement('div');
++     * div.innerHTML = 'Hello, world!';
++     * var tooltip = new mapboxgl.Popup()
++     *   .setLngLat(e.lngLat)
++     *   .setDOMContent(div)
++     *   .addTo(map);
++     */
++    setDOMContent: function(htmlNode) {
++        this._createContent();
++        this._content.appendChild(htmlNode);
++        this._update();
++        return this;
++    },
+ 
+-/**
+- * Alias for {@link mat4.subtract}
+- * @function
+- */
+-mat4.sub = mat4.subtract;
++    _createContent: function() {
++        if (this._content && this._content.parentNode) {
++            this._content.parentNode.removeChild(this._content);
++        }
+ 
+-/**
+- * Multiply each element of the matrix by a scalar.
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat4} out
+- */
+-mat4.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    out[4] = a[4] * b;
+-    out[5] = a[5] * b;
+-    out[6] = a[6] * b;
+-    out[7] = a[7] * b;
+-    out[8] = a[8] * b;
+-    out[9] = a[9] * b;
+-    out[10] = a[10] * b;
+-    out[11] = a[11] * b;
+-    out[12] = a[12] * b;
+-    out[13] = a[13] * b;
+-    out[14] = a[14] * b;
+-    out[15] = a[15] * b;
+-    return out;
+-};
++        this._content = DOM.create('div', 'mapboxgl-popup-content', this._container);
+ 
+-/**
+- * Adds two mat4's after multiplying each element of the second operand by a scalar value.
+- *
+- * @param {mat4} out the receiving vector
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat4} out
+- */
+-mat4.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    out[4] = a[4] + (b[4] * scale);
+-    out[5] = a[5] + (b[5] * scale);
+-    out[6] = a[6] + (b[6] * scale);
+-    out[7] = a[7] + (b[7] * scale);
+-    out[8] = a[8] + (b[8] * scale);
+-    out[9] = a[9] + (b[9] * scale);
+-    out[10] = a[10] + (b[10] * scale);
+-    out[11] = a[11] + (b[11] * scale);
+-    out[12] = a[12] + (b[12] * scale);
+-    out[13] = a[13] + (b[13] * scale);
+-    out[14] = a[14] + (b[14] * scale);
+-    out[15] = a[15] + (b[15] * scale);
+-    return out;
+-};
++        if (this.options.closeButton) {
++            this._closeButton = DOM.create('button', 'mapboxgl-popup-close-button', this._content);
++            this._closeButton.innerHTML = '&#215;';
++            this._closeButton.addEventListener('click', this._onClickClose);
++        }
++    },
+ 
+-/**
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {mat4} a The first matrix.
+- * @param {mat4} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat4.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && 
+-           a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && 
+-           a[8] === b[8] && a[9] === b[9] && a[10] === b[10] && a[11] === b[11] &&
+-           a[12] === b[12] && a[13] === b[13] && a[14] === b[14] && a[15] === b[15];
+-};
++    _update: function() {
++        if (!this._map || !this._lngLat || !this._content) { return; }
+ 
+-/**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
+- *
+- * @param {mat4} a The first matrix.
+- * @param {mat4} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat4.equals = function (a, b) {
+-    var a0  = a[0],  a1  = a[1],  a2  = a[2],  a3  = a[3],
+-        a4  = a[4],  a5  = a[5],  a6  = a[6],  a7  = a[7], 
+-        a8  = a[8],  a9  = a[9],  a10 = a[10], a11 = a[11], 
+-        a12 = a[12], a13 = a[13], a14 = a[14], a15 = a[15];
++        if (!this._container) {
++            this._container = DOM.create('div', 'mapboxgl-popup', this._map.getContainer());
++            this._tip       = DOM.create('div', 'mapboxgl-popup-tip', this._container);
++            this._container.appendChild(this._content);
++        }
+ 
+-    var b0  = b[0],  b1  = b[1],  b2  = b[2],  b3  = b[3],
+-        b4  = b[4],  b5  = b[5],  b6  = b[6],  b7  = b[7], 
+-        b8  = b[8],  b9  = b[9],  b10 = b[10], b11 = b[11], 
+-        b12 = b[12], b13 = b[13], b14 = b[14], b15 = b[15];
++        var pos = this._map.project(this._lngLat).round(),
++            anchor = this.options.anchor;
+ 
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
+-            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
+-            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
+-            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
+-            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
+-            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)) &&
+-            Math.abs(a9 - b9) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a9), Math.abs(b9)) &&
+-            Math.abs(a10 - b10) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a10), Math.abs(b10)) &&
+-            Math.abs(a11 - b11) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a11), Math.abs(b11)) &&
+-            Math.abs(a12 - b12) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a12), Math.abs(b12)) &&
+-            Math.abs(a13 - b13) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a13), Math.abs(b13)) &&
+-            Math.abs(a14 - b14) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a14), Math.abs(b14)) &&
+-            Math.abs(a15 - b15) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a15), Math.abs(b15)));
+-};
++        if (!anchor) {
++            var width = this._container.offsetWidth,
++                height = this._container.offsetHeight;
+ 
++            if (pos.y < height) {
++                anchor = ['top'];
++            } else if (pos.y > this._map.transform.height - height) {
++                anchor = ['bottom'];
++            } else {
++                anchor = [];
++            }
+ 
++            if (pos.x < width / 2) {
++                anchor.push('left');
++            } else if (pos.x > this._map.transform.width - width / 2) {
++                anchor.push('right');
++            }
+ 
+-module.exports = mat4;
++            if (anchor.length === 0) {
++                anchor = 'bottom';
++            } else {
++                anchor = anchor.join('-');
++            }
++        }
+ 
+-},{"./common.js":364}],369:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++        var anchorTranslate = {
++            'top': 'translate(-50%,0)',
++            'top-left': 'translate(0,0)',
++            'top-right': 'translate(-100%,0)',
++            'bottom': 'translate(-50%,-100%)',
++            'bottom-left': 'translate(0,-100%)',
++            'bottom-right': 'translate(-100%,-100%)',
++            'left': 'translate(0,-50%)',
++            'right': 'translate(-100%,-50%)'
++        };
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++        var classList = this._container.classList;
++        for (var key in anchorTranslate) {
++            classList.remove('mapboxgl-popup-anchor-' + key);
++        }
++        classList.add('mapboxgl-popup-anchor-' + anchor);
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++        DOM.setTransform(this._container, anchorTranslate[anchor] + ' translate(' + pos.x + 'px,' + pos.y + 'px)');
++    },
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    _onClickClose: function() {
++        this.remove();
++    }
++});
+ 
+-var glMatrix = require("./common.js");
+-var mat3 = require("./mat3.js");
+-var vec3 = require("./vec3.js");
+-var vec4 = require("./vec4.js");
++},{"../geo/lng_lat":269,"../util/dom":351,"../util/evented":354,"../util/util":362}],346:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * @class Quaternion
+- * @name quat
+- */
+-var quat = {};
++module.exports = Actor;
+ 
+ /**
+- * Creates a new identity quat
++ * An implementation of the [Actor design pattern](http://en.wikipedia.org/wiki/Actor_model)
++ * that maintains the relationship between asynchronous tasks and the objects
++ * that spin them off - in this case, tasks like parsing parts of styles,
++ * owned by the styles
+  *
+- * @returns {quat} a new quaternion
++ * @param {WebWorker} target
++ * @param {WebWorker} parent
++ * @private
+  */
+-quat.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
++function Actor(target, parent) {
++    this.target = target;
++    this.parent = parent;
++    this.callbacks = {};
++    this.callbackID = 0;
++    this.receive = this.receive.bind(this);
++    this.target.addEventListener('message', this.receive, false);
++}
++
++Actor.prototype.receive = function(message) {
++    var data = message.data,
++        callback;
++
++    if (data.type === '<response>') {
++        callback = this.callbacks[data.id];
++        delete this.callbacks[data.id];
++        callback(data.error || null, data.data);
++    } else if (typeof data.id !== 'undefined') {
++        var id = data.id;
++        this.parent[data.type](data.data, function(err, data, buffers) {
++            this.postMessage({
++                type: '<response>',
++                id: String(id),
++                error: err ? String(err) : null,
++                data: data
++            }, buffers);
++        }.bind(this));
++    } else {
++        this.parent[data.type](data.data);
++    }
++};
++
++Actor.prototype.send = function(type, data, callback, buffers) {
++    var id = null;
++    if (callback) this.callbacks[id = this.callbackID++] = callback;
++    this.postMessage({ type: type, id: String(id), data: data }, buffers);
+ };
+ 
+ /**
+- * Sets a quaternion to represent the shortest rotation from one
+- * vector to another.
+- *
+- * Both vectors are assumed to be unit length.
++ * Wrapped postMessage API that abstracts around IE's lack of
++ * `transferList` support.
+  *
+- * @param {quat} out the receiving quaternion.
+- * @param {vec3} a the initial vector
+- * @param {vec3} b the destination vector
+- * @returns {quat} out
++ * @param {Object} message
++ * @param {Object} transferList
++ * @private
+  */
+-quat.rotationTo = (function() {
+-    var tmpvec3 = vec3.create();
+-    var xUnitVec3 = vec3.fromValues(1,0,0);
+-    var yUnitVec3 = vec3.fromValues(0,1,0);
++Actor.prototype.postMessage = function(message, transferList) {
++    this.target.postMessage(message, transferList);
++};
+ 
+-    return function(out, a, b) {
+-        var dot = vec3.dot(a, b);
+-        if (dot < -0.999999) {
+-            vec3.cross(tmpvec3, xUnitVec3, a);
+-            if (vec3.length(tmpvec3) < 0.000001)
+-                vec3.cross(tmpvec3, yUnitVec3, a);
+-            vec3.normalize(tmpvec3, tmpvec3);
+-            quat.setAxisAngle(out, tmpvec3, Math.PI);
+-            return out;
+-        } else if (dot > 0.999999) {
+-            out[0] = 0;
+-            out[1] = 0;
+-            out[2] = 0;
+-            out[3] = 1;
+-            return out;
++},{}],347:[function(require,module,exports){
++'use strict';
++
++exports.getJSON = function(url, callback) {
++    var xhr = new XMLHttpRequest();
++    xhr.open('GET', url, true);
++    xhr.setRequestHeader('Accept', 'application/json');
++    xhr.onerror = function(e) {
++        callback(e);
++    };
++    xhr.onload = function() {
++        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
++            var data;
++            try {
++                data = JSON.parse(xhr.response);
++            } catch (err) {
++                return callback(err);
++            }
++            callback(null, data);
+         } else {
+-            vec3.cross(tmpvec3, a, b);
+-            out[0] = tmpvec3[0];
+-            out[1] = tmpvec3[1];
+-            out[2] = tmpvec3[2];
+-            out[3] = 1 + dot;
+-            return quat.normalize(out, out);
++            callback(new Error(xhr.statusText));
+         }
+     };
+-})();
+-
+-/**
+- * Sets the specified quaternion with values corresponding to the given
+- * axes. Each axis is a vec3 and is expected to be unit length and
+- * perpendicular to all other specified axes.
+- *
+- * @param {vec3} view  the vector representing the viewing direction
+- * @param {vec3} right the vector representing the local "right" direction
+- * @param {vec3} up    the vector representing the local "up" direction
+- * @returns {quat} out
+- */
+-quat.setAxes = (function() {
+-    var matr = mat3.create();
++    xhr.send();
++    return xhr;
++};
+ 
+-    return function(out, view, right, up) {
+-        matr[0] = right[0];
+-        matr[3] = right[1];
+-        matr[6] = right[2];
++exports.getArrayBuffer = function(url, callback) {
++    var xhr = new XMLHttpRequest();
++    xhr.open('GET', url, true);
++    xhr.responseType = 'arraybuffer';
++    xhr.onerror = function(e) {
++        callback(e);
++    };
++    xhr.onload = function() {
++        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
++            callback(null, xhr.response);
++        } else {
++            callback(new Error(xhr.statusText));
++        }
++    };
++    xhr.send();
++    return xhr;
++};
+ 
+-        matr[1] = up[0];
+-        matr[4] = up[1];
+-        matr[7] = up[2];
++function sameOrigin(url) {
++    var a = document.createElement('a');
++    a.href = url;
++    return a.protocol === document.location.protocol && a.host === document.location.host;
++}
+ 
+-        matr[2] = -view[0];
+-        matr[5] = -view[1];
+-        matr[8] = -view[2];
++exports.getImage = function(url, callback) {
++    return exports.getArrayBuffer(url, function(err, imgData) {
++        if (err) return callback(err);
++        var img = new Image();
++        img.onload = function() {
++            callback(null, img);
++            (window.URL || window.webkitURL).revokeObjectURL(img.src);
++        };
++        var blob = new Blob([new Uint8Array(imgData)], { type: 'image/png' });
++        img.src = (window.URL || window.webkitURL).createObjectURL(blob);
++        img.getData = function() {
++            var canvas = document.createElement('canvas');
++            var context = canvas.getContext('2d');
++            canvas.width = img.width;
++            canvas.height = img.height;
++            context.drawImage(img, 0, 0);
++            return context.getImageData(0, 0, img.width, img.height).data;
++        };
++        return img;
++    });
++};
+ 
+-        return quat.normalize(out, quat.fromMat3(out, matr));
++exports.getVideo = function(urls, callback) {
++    var video = document.createElement('video');
++    video.onloadstart = function() {
++        callback(null, video);
+     };
+-})();
++    for (var i = 0; i < urls.length; i++) {
++        var s = document.createElement('source');
++        if (!sameOrigin(urls[i])) {
++            video.crossOrigin = 'Anonymous';
++        }
++        s.src = urls[i];
++        video.appendChild(s);
++    }
++    video.getData = function() { return video; };
++    return video;
++};
+ 
+-/**
+- * Creates a new quat initialized with values from an existing quaternion
+- *
+- * @param {quat} a quaternion to clone
+- * @returns {quat} a new quaternion
+- * @function
+- */
+-quat.clone = vec4.clone;
++},{}],348:[function(require,module,exports){
++'use strict';
+ 
+ /**
+- * Creates a new quat initialized with the given values
+- *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {quat} a new quaternion
+- * @function
++ * Unlike js/util/browser.js, this code is written with the expectation
++ * of a browser environment with a global 'window' object
++ * @module browser
++ * @private
+  */
+-quat.fromValues = vec4.fromValues;
+ 
+ /**
+- * Copy the values from one quat to another
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the source quaternion
+- * @returns {quat} out
+- * @function
++ * Provides a function that outputs milliseconds: either performance.now()
++ * or a fallback to Date.now()
+  */
+-quat.copy = vec4.copy;
++module.exports.now = (function() {
++    if (window.performance &&
++        window.performance.now) {
++        return window.performance.now.bind(window.performance);
++    } else {
++        return Date.now.bind(Date);
++    }
++}());
+ 
+-/**
+- * Set the components of a quat to the given values
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {quat} out
+- * @function
+- */
+-quat.set = vec4.set;
++var frame = window.requestAnimationFrame ||
++    window.mozRequestAnimationFrame ||
++    window.webkitRequestAnimationFrame ||
++    window.msRequestAnimationFrame;
+ 
+-/**
+- * Set a quat to the identity quaternion
+- *
+- * @param {quat} out the receiving quaternion
+- * @returns {quat} out
+- */
+-quat.identity = function(out) {
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
++exports.frame = function(fn) {
++    return frame(fn);
+ };
+ 
+-/**
+- * Sets a quat from the given angle and rotation axis,
+- * then returns it.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {vec3} axis the axis around which to rotate
+- * @param {Number} rad the angle in radians
+- * @returns {quat} out
+- **/
+-quat.setAxisAngle = function(out, axis, rad) {
+-    rad = rad * 0.5;
+-    var s = Math.sin(rad);
+-    out[0] = s * axis[0];
+-    out[1] = s * axis[1];
+-    out[2] = s * axis[2];
+-    out[3] = Math.cos(rad);
+-    return out;
++var cancel = window.cancelAnimationFrame ||
++    window.mozCancelAnimationFrame ||
++    window.webkitCancelAnimationFrame ||
++    window.msCancelAnimationFrame;
++
++exports.cancelFrame = function(id) {
++    cancel(id);
+ };
+ 
+-/**
+- * Gets the rotation axis and angle for a given
+- *  quaternion. If a quaternion is created with
+- *  setAxisAngle, this method will return the same
+- *  values as providied in the original parameter list
+- *  OR functionally equivalent values.
+- * Example: The quaternion formed by axis [0, 0, 1] and
+- *  angle -90 is the same as the quaternion formed by
+- *  [0, 0, 1] and 270. This method favors the latter.
+- * @param  {vec3} out_axis  Vector receiving the axis of rotation
+- * @param  {quat} q     Quaternion to be decomposed
+- * @return {Number}     Angle, in radians, of the rotation
+- */
+-quat.getAxisAngle = function(out_axis, q) {
+-    var rad = Math.acos(q[3]) * 2.0;
+-    var s = Math.sin(rad / 2.0);
+-    if (s != 0.0) {
+-        out_axis[0] = q[0] / s;
+-        out_axis[1] = q[1] / s;
+-        out_axis[2] = q[2] / s;
+-    } else {
+-        // If s is zero, return any axis (no rotation - axis does not matter)
+-        out_axis[0] = 1;
+-        out_axis[1] = 0;
+-        out_axis[2] = 0;
++exports.timed = function (fn, dur, ctx) {
++    if (!dur) {
++        fn.call(ctx, 1);
++        return null;
+     }
+-    return rad;
+-};
+ 
+-/**
+- * Adds two quat's
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @returns {quat} out
+- * @function
+- */
+-quat.add = vec4.add;
++    var abort = false,
++        start = module.exports.now();
+ 
+-/**
+- * Multiplies two quat's
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @returns {quat} out
+- */
+-quat.multiply = function(out, a, b) {
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bx = b[0], by = b[1], bz = b[2], bw = b[3];
++    function tick(now) {
++        if (abort) return;
++        now = module.exports.now();
+ 
+-    out[0] = ax * bw + aw * bx + ay * bz - az * by;
+-    out[1] = ay * bw + aw * by + az * bx - ax * bz;
+-    out[2] = az * bw + aw * bz + ax * by - ay * bx;
+-    out[3] = aw * bw - ax * bx - ay * by - az * bz;
+-    return out;
++        if (now >= start + dur) {
++            fn.call(ctx, 1);
++        } else {
++            fn.call(ctx, (now - start) / dur);
++            exports.frame(tick);
++        }
++    }
++
++    exports.frame(tick);
++
++    return function() { abort = true; };
+ };
+ 
+ /**
+- * Alias for {@link quat.multiply}
+- * @function
++ * Test if the current browser supports Mapbox GL JS
++ * @param {Object} options
++ * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
++ *   if the performance of Mapbox GL JS would be dramatically worse than
++ *   expected (i.e. a software renderer would be used)
++ * @return {boolean}
+  */
+-quat.mul = quat.multiply;
++exports.supported = require('mapbox-gl-js-supported');
+ 
+-/**
+- * Scales a quat by a scalar number
+- *
+- * @param {quat} out the receiving vector
+- * @param {quat} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {quat} out
+- * @function
+- */
+-quat.scale = vec4.scale;
++exports.hardwareConcurrency = navigator.hardwareConcurrency || 8;
+ 
+-/**
+- * Rotates a quaternion by the given angle about the X axis
+- *
+- * @param {quat} out quat receiving operation result
+- * @param {quat} a quat to rotate
+- * @param {number} rad angle (in radians) to rotate
+- * @returns {quat} out
+- */
+-quat.rotateX = function (out, a, rad) {
+-    rad *= 0.5; 
++Object.defineProperty(exports, 'devicePixelRatio', {
++    get: function() { return window.devicePixelRatio; }
++});
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bx = Math.sin(rad), bw = Math.cos(rad);
++exports.supportsWebp = false;
+ 
+-    out[0] = ax * bw + aw * bx;
+-    out[1] = ay * bw + az * bx;
+-    out[2] = az * bw - ay * bx;
+-    out[3] = aw * bw - ax * bx;
+-    return out;
++var webpImgTest = document.createElement('img');
++webpImgTest.onload = function() {
++    exports.supportsWebp = true;
+ };
++webpImgTest.src = 'data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=';
+ 
+-/**
+- * Rotates a quaternion by the given angle about the Y axis
+- *
+- * @param {quat} out quat receiving operation result
+- * @param {quat} a quat to rotate
+- * @param {number} rad angle (in radians) to rotate
+- * @returns {quat} out
+- */
+-quat.rotateY = function (out, a, rad) {
+-    rad *= 0.5; 
++exports.supportsGeolocation = !!navigator.geolocation;
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        by = Math.sin(rad), bw = Math.cos(rad);
++},{"mapbox-gl-js-supported":234}],349:[function(require,module,exports){
++'use strict';
+ 
+-    out[0] = ax * bw - az * by;
+-    out[1] = ay * bw + aw * by;
+-    out[2] = az * bw + ax * by;
+-    out[3] = aw * bw - ay * by;
+-    return out;
++var util = require('../util');
++var isSupported = require('mapbox-gl-js-supported');
++
++module.exports = Canvas;
++
++function Canvas(parent, container) {
++    this.canvas = document.createElement('canvas');
++
++    if (parent && container) {
++        this.canvas.style.position = 'absolute';
++        this.canvas.classList.add('mapboxgl-canvas');
++        this.canvas.addEventListener('webglcontextlost', parent._contextLost.bind(parent), false);
++        this.canvas.addEventListener('webglcontextrestored', parent._contextRestored.bind(parent), false);
++        this.canvas.setAttribute('tabindex', 0);
++        container.appendChild(this.canvas);
++    }
++}
++
++Canvas.prototype.resize = function(width, height) {
++    var pixelRatio = window.devicePixelRatio || 1;
++
++    // Request the required canvas size taking the pixelratio into account.
++    this.canvas.width = pixelRatio * width;
++    this.canvas.height = pixelRatio * height;
++
++    // Maintain the same canvas size, potentially downscaling it for HiDPI displays
++    this.canvas.style.width = width + 'px';
++    this.canvas.style.height = height + 'px';
+ };
+ 
+-/**
+- * Rotates a quaternion by the given angle about the Z axis
+- *
+- * @param {quat} out quat receiving operation result
+- * @param {quat} a quat to rotate
+- * @param {number} rad angle (in radians) to rotate
+- * @returns {quat} out
+- */
+-quat.rotateZ = function (out, a, rad) {
+-    rad *= 0.5; 
++Canvas.prototype.getWebGLContext = function(attributes) {
++    attributes = util.extend({}, attributes, isSupported.webGLContextAttributes);
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bz = Math.sin(rad), bw = Math.cos(rad);
++    return this.canvas.getContext('webgl', attributes) ||
++        this.canvas.getContext('experimental-webgl', attributes);
++};
+ 
+-    out[0] = ax * bw + ay * bz;
+-    out[1] = ay * bw - ax * bz;
+-    out[2] = az * bw + aw * bz;
+-    out[3] = aw * bw - az * bz;
+-    return out;
++Canvas.prototype.getElement = function() {
++    return this.canvas;
+ };
+ 
+-/**
+- * Calculates the W component of a quat from the X, Y, and Z components.
+- * Assumes that quaternion is 1 unit in length.
+- * Any existing W component will be ignored.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quat to calculate W component of
+- * @returns {quat} out
+- */
+-quat.calculateW = function (out, a) {
+-    var x = a[0], y = a[1], z = a[2];
++},{"../util":362,"mapbox-gl-js-supported":234}],350:[function(require,module,exports){
++'use strict';
+ 
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    out[3] = Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));
+-    return out;
++var Actor = require('../actor');
++var WebWorkify = require('webworkify');
++
++module.exports = Dispatcher;
++
++function Dispatcher(length, parent) {
++    this.actors = [];
++    this.currentActor = 0;
++    for (var i = 0; i < length; i++) {
++        var worker = new WebWorkify(require('../../source/worker'));
++        var actor = new Actor(worker, parent);
++        actor.name = "Worker " + i;
++        this.actors.push(actor);
++    }
++}
++
++Dispatcher.prototype = {
++    broadcast: function(type, data) {
++        for (var i = 0; i < this.actors.length; i++) {
++            this.actors[i].send(type, data);
++        }
++    },
++
++    send: function(type, data, callback, targetID, buffers) {
++        if (typeof targetID !== 'number' || isNaN(targetID)) {
++            // Use round robin to send requests to web workers.
++            targetID = this.currentActor = (this.currentActor + 1) % this.actors.length;
++        }
++
++        this.actors[targetID].send(type, data, callback, buffers);
++        return targetID;
++    },
++
++    remove: function() {
++        for (var i = 0; i < this.actors.length; i++) {
++            this.actors[i].target.terminate();
++        }
++        this.actors = [];
++    }
+ };
+ 
+-/**
+- * Calculates the dot product of two quat's
+- *
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @returns {Number} dot product of a and b
+- * @function
+- */
+-quat.dot = vec4.dot;
++},{"../../source/worker":298,"../actor":346,"webworkify":469}],351:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Performs a linear interpolation between two quat's
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {quat} out
+- * @function
+- */
+-quat.lerp = vec4.lerp;
++var Point = require('point-geometry');
+ 
+-/**
+- * Performs a spherical linear interpolation between two quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {quat} out
+- */
+-quat.slerp = function (out, a, b, t) {
+-    // benchmarks:
+-    //    http://jsperf.com/quaternion-slerp-implementations
++exports.create = function (tagName, className, container) {
++    var el = document.createElement(tagName);
++    if (className) el.className = className;
++    if (container) container.appendChild(el);
++    return el;
++};
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bx = b[0], by = b[1], bz = b[2], bw = b[3];
++var docStyle = document.documentElement.style;
+ 
+-    var        omega, cosom, sinom, scale0, scale1;
++function testProp(props) {
++    for (var i = 0; i < props.length; i++) {
++        if (props[i] in docStyle) {
++            return props[i];
++        }
++    }
++}
+ 
+-    // calc cosine
+-    cosom = ax * bx + ay * by + az * bz + aw * bw;
+-    // adjust signs (if necessary)
+-    if ( cosom < 0.0 ) {
+-        cosom = -cosom;
+-        bx = - bx;
+-        by = - by;
+-        bz = - bz;
+-        bw = - bw;
++var selectProp = testProp(['userSelect', 'MozUserSelect', 'WebkitUserSelect', 'msUserSelect']),
++    userSelect;
++exports.disableDrag = function () {
++    if (selectProp) {
++        userSelect = docStyle[selectProp];
++        docStyle[selectProp] = 'none';
+     }
+-    // calculate coefficients
+-    if ( (1.0 - cosom) > 0.000001 ) {
+-        // standard case (slerp)
+-        omega  = Math.acos(cosom);
+-        sinom  = Math.sin(omega);
+-        scale0 = Math.sin((1.0 - t) * omega) / sinom;
+-        scale1 = Math.sin(t * omega) / sinom;
+-    } else {        
+-        // "from" and "to" quaternions are very close 
+-        //  ... so we can do a linear interpolation
+-        scale0 = 1.0 - t;
+-        scale1 = t;
++};
++exports.enableDrag = function () {
++    if (selectProp) {
++        docStyle[selectProp] = userSelect;
+     }
+-    // calculate final values
+-    out[0] = scale0 * ax + scale1 * bx;
+-    out[1] = scale0 * ay + scale1 * by;
+-    out[2] = scale0 * az + scale1 * bz;
+-    out[3] = scale0 * aw + scale1 * bw;
+-    
+-    return out;
+ };
+ 
+-/**
+- * Performs a spherical linear interpolation with two control points
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {quat} c the third operand
+- * @param {quat} d the fourth operand
+- * @param {Number} t interpolation amount
+- * @returns {quat} out
+- */
+-quat.sqlerp = (function () {
+-  var temp1 = quat.create();
+-  var temp2 = quat.create();
+-  
+-  return function (out, a, b, c, d, t) {
+-    quat.slerp(temp1, a, d, t);
+-    quat.slerp(temp2, b, c, t);
+-    quat.slerp(out, temp1, temp2, 2 * t * (1 - t));
+-    
+-    return out;
+-  };
+-}());
+-
+-/**
+- * Calculates the inverse of a quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quat to calculate inverse of
+- * @returns {quat} out
+- */
+-quat.invert = function(out, a) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+-        dot = a0*a0 + a1*a1 + a2*a2 + a3*a3,
+-        invDot = dot ? 1.0/dot : 0;
+-    
+-    // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0
++var transformProp = testProp(['transform', 'WebkitTransform']);
++exports.setTransform = function(el, value) {
++    el.style[transformProp] = value;
++};
+ 
+-    out[0] = -a0*invDot;
+-    out[1] = -a1*invDot;
+-    out[2] = -a2*invDot;
+-    out[3] = a3*invDot;
+-    return out;
++// Suppress the next click, but only if it's immediate.
++function suppressClick(e) {
++    e.preventDefault();
++    e.stopPropagation();
++    window.removeEventListener('click', suppressClick, true);
++}
++exports.suppressClick = function() {
++    window.addEventListener('click', suppressClick, true);
++    window.setTimeout(function() {
++        window.removeEventListener('click', suppressClick, true);
++    }, 0);
+ };
+ 
+-/**
+- * Calculates the conjugate of a quat
+- * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quat to calculate conjugate of
+- * @returns {quat} out
+- */
+-quat.conjugate = function (out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    out[3] = a[3];
+-    return out;
++exports.mousePos = function (el, e) {
++    var rect = el.getBoundingClientRect();
++    e = e.touches ? e.touches[0] : e;
++    return new Point(
++        e.clientX - rect.left - el.clientLeft,
++        e.clientY - rect.top - el.clientTop
++    );
+ };
+ 
+-/**
+- * Calculates the length of a quat
+- *
+- * @param {quat} a vector to calculate length of
+- * @returns {Number} length of a
+- * @function
+- */
+-quat.length = vec4.length;
++exports.touchPos = function (el, e) {
++    var rect = el.getBoundingClientRect(),
++        points = [];
++    for (var i = 0; i < e.touches.length; i++) {
++        points.push(new Point(
++            e.touches[i].clientX - rect.left - el.clientLeft,
++            e.touches[i].clientY - rect.top - el.clientTop
++        ));
++    }
++    return points;
++};
+ 
+-/**
+- * Alias for {@link quat.length}
+- * @function
+- */
+-quat.len = quat.length;
++},{"point-geometry":400}],352:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Calculates the squared length of a quat
+- *
+- * @param {quat} a vector to calculate squared length of
+- * @returns {Number} squared length of a
+- * @function
+- */
+-quat.squaredLength = vec4.squaredLength;
++module.exports = {
++    API_URL: 'https://api.mapbox.com',
++    REQUIRE_ACCESS_TOKEN: true
++};
+ 
+-/**
+- * Alias for {@link quat.squaredLength}
+- * @function
+- */
+-quat.sqrLen = quat.squaredLength;
++},{}],353:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Normalize a quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quaternion to normalize
+- * @returns {quat} out
+- * @function
+- */
+-quat.normalize = vec4.normalize;
++var assert = require('assert');
+ 
+-/**
+- * Creates a quaternion from the given 3x3 rotation matrix.
+- *
+- * NOTE: The resultant quaternion is not normalized, so you should be sure
+- * to renormalize the quaternion yourself where necessary.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {mat3} m rotation matrix
+- * @returns {quat} out
+- * @function
+- */
+-quat.fromMat3 = function(out, m) {
+-    // Algorithm in Ken Shoemake's article in 1987 SIGGRAPH course notes
+-    // article "Quaternion Calculus and Fast Animation".
+-    var fTrace = m[0] + m[4] + m[8];
+-    var fRoot;
++module.exports = DictionaryCoder;
+ 
+-    if ( fTrace > 0.0 ) {
+-        // |w| > 1/2, may as well choose w > 1/2
+-        fRoot = Math.sqrt(fTrace + 1.0);  // 2w
+-        out[3] = 0.5 * fRoot;
+-        fRoot = 0.5/fRoot;  // 1/(4w)
+-        out[0] = (m[5]-m[7])*fRoot;
+-        out[1] = (m[6]-m[2])*fRoot;
+-        out[2] = (m[1]-m[3])*fRoot;
+-    } else {
+-        // |w| <= 1/2
+-        var i = 0;
+-        if ( m[4] > m[0] )
+-          i = 1;
+-        if ( m[8] > m[i*3+i] )
+-          i = 2;
+-        var j = (i+1)%3;
+-        var k = (i+2)%3;
+-        
+-        fRoot = Math.sqrt(m[i*3+i]-m[j*3+j]-m[k*3+k] + 1.0);
+-        out[i] = 0.5 * fRoot;
+-        fRoot = 0.5 / fRoot;
+-        out[3] = (m[j*3+k] - m[k*3+j]) * fRoot;
+-        out[j] = (m[j*3+i] + m[i*3+j]) * fRoot;
+-        out[k] = (m[k*3+i] + m[i*3+k]) * fRoot;
++function DictionaryCoder(strings) {
++    this._stringToNumber = {};
++    this._numberToString = [];
++    for (var i = 0; i < strings.length; i++) {
++        var string = strings[i];
++        this._stringToNumber[string] = i;
++        this._numberToString[i] = string;
+     }
+-    
+-    return out;
++}
++
++DictionaryCoder.prototype.encode = function(string) {
++    assert(string in this._stringToNumber);
++    return this._stringToNumber[string];
+ };
+ 
+-/**
+- * Returns a string representation of a quatenion
+- *
+- * @param {quat} vec vector to represent as a string
+- * @returns {String} string representation of the vector
+- */
+-quat.str = function (a) {
+-    return 'quat(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
++DictionaryCoder.prototype.decode = function(n) {
++    assert(n < this._numberToString.length);
++    return this._numberToString[n];
+ };
+ 
+-/**
+- * Returns whether or not the quaternions have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {quat} a The first quaternion.
+- * @param {quat} b The second quaternion.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-quat.exactEquals = vec4.exactEquals;
++},{"assert":29}],354:[function(require,module,exports){
++'use strict';
++
++var util = require('./util');
+ 
+ /**
+- * Returns whether or not the quaternions have approximately the same elements in the same position.
+- *
+- * @param {quat} a The first vector.
+- * @param {quat} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * Methods mixed in to other classes for event capabilities.
++ * @mixin Evented
+  */
+-quat.equals = vec4.equals;
++var Evented = {
+ 
+-module.exports = quat;
++    /**
++     * Subscribe to a specified event with a listener function the latter gets the data object that was passed to `fire` and additionally `target` and `type` properties
++     *
++     * @param {string} type Event type
++     * @param {Function} listener Function to be called when the event is fired
++     * @returns {Object} `this`
++     */
++    on: function(type, listener) {
++        this._events = this._events || {};
++        this._events[type] = this._events[type] || [];
++        this._events[type].push(listener);
+ 
+-},{"./common.js":364,"./mat3.js":367,"./vec3.js":371,"./vec4.js":372}],370:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++        return this;
++    },
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    /**
++     * Remove a event listener
++     *
++     * @param {string} [type] Event type. If none is specified, remove all listeners
++     * @param {Function} [listener] Function to be called when the event is fired. If none is specified all listeners are removed
++     * @returns {Object} `this`
++     */
++    off: function(type, listener) {
++        if (!type) {
++            // clear all listeners if no arguments specified
++            delete this._events;
++            return this;
++        }
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++        if (!this.listens(type)) return this;
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++        if (listener) {
++            var idx = this._events[type].indexOf(listener);
++            if (idx >= 0) {
++                this._events[type].splice(idx, 1);
++            }
++            if (!this._events[type].length) {
++                delete this._events[type];
++            }
++        } else {
++            delete this._events[type];
++        }
+ 
+-var glMatrix = require("./common.js");
++        return this;
++    },
+ 
+-/**
+- * @class 2 Dimensional Vector
+- * @name vec2
+- */
+-var vec2 = {};
++    /**
++     * Call a function once when an event has fired
++     *
++     * @param {string} type Event type.
++     * @param {Function} listener Function to be called once when the event is fired
++     * @returns {Object} `this`
++     */
++    once: function(type, listener) {
++        var wrapper = function(data) {
++            this.off(type, wrapper);
++            listener.call(this, data);
++        }.bind(this);
++        this.on(type, wrapper);
++        return this;
++    },
+ 
+-/**
+- * Creates a new, empty vec2
+- *
+- * @returns {vec2} a new 2D vector
+- */
+-vec2.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(2);
+-    out[0] = 0;
+-    out[1] = 0;
+-    return out;
+-};
++    /**
++     * Fire event of a given string type with the given data object
++     *
++     * @param {string} type Event type
++     * @param {Object} [data] Optional data passed to the event receiver (e.g. {@link #EventData})
++     * @returns {Object} `this`
++     */
++    fire: function(type, data) {
++        if (!this.listens(type)) return this;
+ 
+-/**
+- * Creates a new vec2 initialized with values from an existing vector
+- *
+- * @param {vec2} a vector to clone
+- * @returns {vec2} a new 2D vector
+- */
+-vec2.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(2);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    return out;
+-};
++        data = util.extend({}, data);
++        util.extend(data, {type: type, target: this});
+ 
+-/**
+- * Creates a new vec2 initialized with the given values
+- *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @returns {vec2} a new 2D vector
+- */
+-vec2.fromValues = function(x, y) {
+-    var out = new glMatrix.ARRAY_TYPE(2);
+-    out[0] = x;
+-    out[1] = y;
+-    return out;
+-};
++        // make sure adding/removing listeners inside other listeners won't cause infinite loop
++        var listeners = this._events[type].slice();
+ 
+-/**
+- * Copy the values from one vec2 to another
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the source vector
+- * @returns {vec2} out
+- */
+-vec2.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    return out;
+-};
++        for (var i = 0; i < listeners.length; i++) {
++            listeners[i].call(this, data);
++        }
+ 
+-/**
+- * Set the components of a vec2 to the given values
+- *
+- * @param {vec2} out the receiving vector
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @returns {vec2} out
+- */
+-vec2.set = function(out, x, y) {
+-    out[0] = x;
+-    out[1] = y;
+-    return out;
+-};
++        return this;
++    },
+ 
+-/**
+- * Adds two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    return out;
++    /**
++     * Check if an event is registered to a type
++     * @param {string} type Event type
++     * @returns {boolean} `true` if there is at least one registered listener for events of type `type`
++     */
++    listens: function(type) {
++        return !!(this._events && this._events[type]);
++    }
+ };
+ 
+-/**
+- * Subtracts vector b from vector a
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    return out;
+-};
++module.exports = Evented;
+ 
+-/**
+- * Alias for {@link vec2.subtract}
+- * @function
+- */
+-vec2.sub = vec2.subtract;
++},{"./util":362}],355:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Multiplies two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.multiply = function(out, a, b) {
+-    out[0] = a[0] * b[0];
+-    out[1] = a[1] * b[1];
+-    return out;
+-};
++module.exports = Glyphs;
++
++function Glyphs(pbf, end) {
++    this.stacks = pbf.readFields(readFontstacks, [], end);
++}
++
++function readFontstacks(tag, stacks, pbf) {
++    if (tag === 1) {
++        var fontstack = pbf.readMessage(readFontstack, {glyphs: {}});
++        stacks.push(fontstack);
++    }
++}
++
++function readFontstack(tag, fontstack, pbf) {
++    if (tag === 1) fontstack.name = pbf.readString();
++    else if (tag === 2) fontstack.range = pbf.readString();
++    else if (tag === 3) {
++        var glyph = pbf.readMessage(readGlyph, {});
++        fontstack.glyphs[glyph.id] = glyph;
++    }
++}
++
++function readGlyph(tag, glyph, pbf) {
++    if (tag === 1) glyph.id = pbf.readVarint();
++    else if (tag === 2) glyph.bitmap = pbf.readBytes();
++    else if (tag === 3) glyph.width = pbf.readVarint();
++    else if (tag === 4) glyph.height = pbf.readVarint();
++    else if (tag === 5) glyph.left = pbf.readSVarint();
++    else if (tag === 6) glyph.top = pbf.readSVarint();
++    else if (tag === 7) glyph.advance = pbf.readVarint();
++}
++
++},{}],356:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Alias for {@link vec2.multiply}
+- * @function
+- */
+-vec2.mul = vec2.multiply;
++module.exports = interpolate;
+ 
+-/**
+- * Divides two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.divide = function(out, a, b) {
+-    out[0] = a[0] / b[0];
+-    out[1] = a[1] / b[1];
+-    return out;
+-};
++function interpolate(a, b, t) {
++    return (a * (1 - t)) + (b * t);
++}
+ 
+-/**
+- * Alias for {@link vec2.divide}
+- * @function
+- */
+-vec2.div = vec2.divide;
++interpolate.number = interpolate;
+ 
+-/**
+- * Math.ceil the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to ceil
+- * @returns {vec2} out
+- */
+-vec2.ceil = function (out, a) {
+-    out[0] = Math.ceil(a[0]);
+-    out[1] = Math.ceil(a[1]);
+-    return out;
++interpolate.vec2 = function(from, to, t) {
++    return [
++        interpolate(from[0], to[0], t),
++        interpolate(from[1], to[1], t)
++    ];
+ };
+ 
+-/**
+- * Math.floor the components of a vec2
++/*
++ * Interpolate between two colors given as 4-element arrays.
+  *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to floor
+- * @returns {vec2} out
++ * @param {Color} from
++ * @param {Color} to
++ * @param {number} t interpolation factor between 0 and 1
++ * @returns {Color} interpolated color
+  */
+-vec2.floor = function (out, a) {
+-    out[0] = Math.floor(a[0]);
+-    out[1] = Math.floor(a[1]);
+-    return out;
++interpolate.color = function(from, to, t) {
++    return [
++        interpolate(from[0], to[0], t),
++        interpolate(from[1], to[1], t),
++        interpolate(from[2], to[2], t),
++        interpolate(from[3], to[3], t)
++    ];
+ };
+ 
+-/**
+- * Returns the minimum of two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.min = function(out, a, b) {
+-    out[0] = Math.min(a[0], b[0]);
+-    out[1] = Math.min(a[1], b[1]);
+-    return out;
++interpolate.array = function(from, to, t) {
++    return from.map(function(d, i) {
++        return interpolate(d, to[i], t);
++    });
+ };
+ 
+-/**
+- * Returns the maximum of two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.max = function(out, a, b) {
+-    out[0] = Math.max(a[0], b[0]);
+-    out[1] = Math.max(a[1], b[1]);
+-    return out;
+-};
++},{}],357:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Math.round the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to round
+- * @returns {vec2} out
+- */
+-vec2.round = function (out, a) {
+-    out[0] = Math.round(a[0]);
+-    out[1] = Math.round(a[1]);
+-    return out;
++module.exports = {
++    multiPolygonIntersectsBufferedMultiPoint: multiPolygonIntersectsBufferedMultiPoint,
++    multiPolygonIntersectsMultiPolygon: multiPolygonIntersectsMultiPolygon,
++    multiPolygonIntersectsBufferedMultiLine: multiPolygonIntersectsBufferedMultiLine
+ };
+ 
+-/**
+- * Scales a vec2 by a scalar number
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {vec2} out
+- */
+-vec2.scale = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    return out;
+-};
++function multiPolygonIntersectsBufferedMultiPoint(multiPolygon, rings, radius) {
++    for (var j = 0; j < multiPolygon.length; j++) {
++        var polygon = multiPolygon[j];
++        for (var i = 0; i < rings.length; i++) {
++            var ring = rings[i];
++            for (var k = 0; k < ring.length; k++) {
++                var point = ring[k];
++                if (polygonContainsPoint(polygon, point)) return true;
++                if (pointIntersectsBufferedLine(point, polygon, radius)) return true;
++            }
++        }
++    }
++    return false;
++}
+ 
+-/**
+- * Adds two vec2's after scaling the second operand by a scalar value
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @param {Number} scale the amount to scale b by before adding
+- * @returns {vec2} out
+- */
+-vec2.scaleAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    return out;
+-};
++function multiPolygonIntersectsMultiPolygon(multiPolygonA, multiPolygonB) {
+ 
+-/**
+- * Calculates the euclidian distance between two vec2's
+- *
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {Number} distance between a and b
+- */
+-vec2.distance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1];
+-    return Math.sqrt(x*x + y*y);
+-};
++    if (multiPolygonA.length === 1 && multiPolygonA[0].length === 1) {
++        return multiPolygonContainsPoint(multiPolygonB, multiPolygonA[0][0]);
++    }
+ 
+-/**
+- * Alias for {@link vec2.distance}
+- * @function
+- */
+-vec2.dist = vec2.distance;
++    for (var m = 0; m < multiPolygonB.length; m++) {
++        var ring = multiPolygonB[m];
++        for (var n = 0; n < ring.length; n++) {
++            if (multiPolygonContainsPoint(multiPolygonA, ring[n])) return true;
++        }
++    }
+ 
+-/**
+- * Calculates the squared euclidian distance between two vec2's
+- *
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {Number} squared distance between a and b
+- */
+-vec2.squaredDistance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1];
+-    return x*x + y*y;
+-};
++    for (var j = 0; j < multiPolygonA.length; j++) {
++        var polygon = multiPolygonA[j];
++        for (var i = 0; i < polygon.length; i++) {
++            if (multiPolygonContainsPoint(multiPolygonB, polygon[i])) return true;
++        }
+ 
+-/**
+- * Alias for {@link vec2.squaredDistance}
+- * @function
+- */
+-vec2.sqrDist = vec2.squaredDistance;
++        for (var k = 0; k < multiPolygonB.length; k++) {
++            if (lineIntersectsLine(polygon, multiPolygonB[k])) return true;
++        }
++    }
+ 
+-/**
+- * Calculates the length of a vec2
+- *
+- * @param {vec2} a vector to calculate length of
+- * @returns {Number} length of a
+- */
+-vec2.length = function (a) {
+-    var x = a[0],
+-        y = a[1];
+-    return Math.sqrt(x*x + y*y);
+-};
++    return false;
++}
+ 
+-/**
+- * Alias for {@link vec2.length}
+- * @function
+- */
+-vec2.len = vec2.length;
++function multiPolygonIntersectsBufferedMultiLine(multiPolygon, multiLine, radius) {
++    for (var i = 0; i < multiLine.length; i++) {
++        var line = multiLine[i];
+ 
+-/**
+- * Calculates the squared length of a vec2
+- *
+- * @param {vec2} a vector to calculate squared length of
+- * @returns {Number} squared length of a
+- */
+-vec2.squaredLength = function (a) {
+-    var x = a[0],
+-        y = a[1];
+-    return x*x + y*y;
+-};
++        for (var j = 0; j < multiPolygon.length; j++) {
++            var polygon = multiPolygon[j];
+ 
+-/**
+- * Alias for {@link vec2.squaredLength}
+- * @function
+- */
+-vec2.sqrLen = vec2.squaredLength;
++            if (polygon.length >= 3) {
++                for (var k = 0; k < line.length; k++) {
++                    if (polygonContainsPoint(polygon, line[k])) return true;
++                }
++            }
+ 
+-/**
+- * Negates the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to negate
+- * @returns {vec2} out
+- */
+-vec2.negate = function(out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    return out;
+-};
++            if (lineIntersectsBufferedLine(polygon, line, radius)) return true;
++        }
++    }
++    return false;
++}
+ 
+-/**
+- * Returns the inverse of the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to invert
+- * @returns {vec2} out
+- */
+-vec2.inverse = function(out, a) {
+-  out[0] = 1.0 / a[0];
+-  out[1] = 1.0 / a[1];
+-  return out;
+-};
++function lineIntersectsBufferedLine(lineA, lineB, radius) {
+ 
+-/**
+- * Normalize a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to normalize
+- * @returns {vec2} out
+- */
+-vec2.normalize = function(out, a) {
+-    var x = a[0],
+-        y = a[1];
+-    var len = x*x + y*y;
+-    if (len > 0) {
+-        //TODO: evaluate use of glm_invsqrt here?
+-        len = 1 / Math.sqrt(len);
+-        out[0] = a[0] * len;
+-        out[1] = a[1] * len;
++    if (lineA.length > 1) {
++        if (lineIntersectsLine(lineA, lineB)) return true;
++
++        // Check whether any point in either line is within radius of the other line
++        for (var j = 0; j < lineB.length; j++) {
++            if (pointIntersectsBufferedLine(lineB[j], lineA, radius)) return true;
++        }
+     }
+-    return out;
+-};
+ 
+-/**
+- * Calculates the dot product of two vec2's
+- *
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-vec2.dot = function (a, b) {
+-    return a[0] * b[0] + a[1] * b[1];
+-};
++    for (var k = 0; k < lineA.length; k++) {
++        if (pointIntersectsBufferedLine(lineA[k], lineB, radius)) return true;
++    }
+ 
+-/**
+- * Computes the cross product of two vec2's
+- * Note that the cross product must by definition produce a 3D vector
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec3} out
+- */
+-vec2.cross = function(out, a, b) {
+-    var z = a[0] * b[1] - a[1] * b[0];
+-    out[0] = out[1] = 0;
+-    out[2] = z;
+-    return out;
+-};
++    return false;
++}
+ 
+-/**
+- * Performs a linear interpolation between two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec2} out
+- */
+-vec2.lerp = function (out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1];
+-    out[0] = ax + t * (b[0] - ax);
+-    out[1] = ay + t * (b[1] - ay);
+-    return out;
+-};
++function lineIntersectsLine(lineA, lineB) {
++    for (var i = 0; i < lineA.length - 1; i++) {
++        var a0 = lineA[i];
++        var a1 = lineA[i + 1];
++        for (var j = 0; j < lineB.length - 1; j++) {
++            var b0 = lineB[j];
++            var b1 = lineB[j + 1];
++            if (lineSegmentIntersectsLineSegment(a0, a1, b0, b1)) return true;
++        }
++    }
++    return false;
++}
+ 
+-/**
+- * Generates a random vector with the given scale
+- *
+- * @param {vec2} out the receiving vector
+- * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+- * @returns {vec2} out
+- */
+-vec2.random = function (out, scale) {
+-    scale = scale || 1.0;
+-    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
+-    out[0] = Math.cos(r) * scale;
+-    out[1] = Math.sin(r) * scale;
+-    return out;
+-};
+ 
+-/**
+- * Transforms the vec2 with a mat2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat2} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat2 = function(out, a, m) {
+-    var x = a[0],
+-        y = a[1];
+-    out[0] = m[0] * x + m[2] * y;
+-    out[1] = m[1] * x + m[3] * y;
+-    return out;
+-};
++// http://bryceboe.com/2006/10/23/line-segment-intersection-algorithm/
++function isCounterClockwise(a, b, c) {
++    return (c.y - a.y) * (b.x - a.x) > (b.y - a.y) * (c.x - a.x);
++}
+ 
+-/**
+- * Transforms the vec2 with a mat2d
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat2d} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat2d = function(out, a, m) {
+-    var x = a[0],
+-        y = a[1];
+-    out[0] = m[0] * x + m[2] * y + m[4];
+-    out[1] = m[1] * x + m[3] * y + m[5];
+-    return out;
+-};
++function lineSegmentIntersectsLineSegment(a0, a1, b0, b1) {
++    return isCounterClockwise(a0, b0, b1) !== isCounterClockwise(a1, b0, b1) &&
++        isCounterClockwise(a0, a1, b0) !== isCounterClockwise(a0, a1, b1);
++}
+ 
+-/**
+- * Transforms the vec2 with a mat3
+- * 3rd vector component is implicitly '1'
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat3} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat3 = function(out, a, m) {
+-    var x = a[0],
+-        y = a[1];
+-    out[0] = m[0] * x + m[3] * y + m[6];
+-    out[1] = m[1] * x + m[4] * y + m[7];
+-    return out;
+-};
++function pointIntersectsBufferedLine(p, line, radius) {
++    var radiusSquared = radius * radius;
+ 
+-/**
+- * Transforms the vec2 with a mat4
+- * 3rd vector component is implicitly '0'
+- * 4th vector component is implicitly '1'
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat4 = function(out, a, m) {
+-    var x = a[0], 
+-        y = a[1];
+-    out[0] = m[0] * x + m[4] * y + m[12];
+-    out[1] = m[1] * x + m[5] * y + m[13];
+-    return out;
+-};
++    if (line.length === 1) return p.distSqr(line[0]) < radiusSquared;
+ 
+-/**
+- * Perform some operation over an array of vec2s.
+- *
+- * @param {Array} a the array of vectors to iterate over
+- * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed
+- * @param {Number} offset Number of elements to skip at the beginning of the array
+- * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
+- * @param {Function} fn Function to call for each vector in the array
+- * @param {Object} [arg] additional argument to pass to fn
+- * @returns {Array} a
+- * @function
+- */
+-vec2.forEach = (function() {
+-    var vec = vec2.create();
++    for (var i = 1; i < line.length; i++) {
++        // Find line segments that have a distance <= radius^2 to p
++        // In that case, we treat the line as "containing point p".
++        var v = line[i - 1], w = line[i];
++        if (distToSegmentSquared(p, v, w) < radiusSquared) return true;
++    }
++    return false;
++}
+ 
+-    return function(a, stride, offset, count, fn, arg) {
+-        var i, l;
+-        if(!stride) {
+-            stride = 2;
++// Code from http://stackoverflow.com/a/1501725/331379.
++function distToSegmentSquared(p, v, w) {
++    var l2 = v.distSqr(w);
++    if (l2 === 0) return p.distSqr(v);
++    var t = ((p.x - v.x) * (w.x - v.x) + (p.y - v.y) * (w.y - v.y)) / l2;
++    if (t < 0) return p.distSqr(v);
++    if (t > 1) return p.distSqr(w);
++    return p.distSqr(w.sub(v)._mult(t)._add(v));
++}
++
++// point in polygon ray casting algorithm
++function multiPolygonContainsPoint(rings, p) {
++    var c = false,
++        ring, p1, p2;
++
++    for (var k = 0; k < rings.length; k++) {
++        ring = rings[k];
++        for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
++            p1 = ring[i];
++            p2 = ring[j];
++            if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
++                c = !c;
++            }
++        }
++    }
++    return c;
++}
++
++function polygonContainsPoint(ring, p) {
++    var c = false;
++    for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
++        var p1 = ring[i];
++        var p2 = ring[j];
++        if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
++            c = !c;
+         }
++    }
++    return c;
++}
+ 
+-        if(!offset) {
+-            offset = 0;
+-        }
+-        
+-        if(count) {
+-            l = Math.min((count * stride) + offset, a.length);
+-        } else {
+-            l = a.length;
+-        }
++},{}],358:[function(require,module,exports){
++'use strict';
+ 
+-        for(i = offset; i < l; i += stride) {
+-            vec[0] = a[i]; vec[1] = a[i+1];
+-            fn(vec, vec, arg);
+-            a[i] = vec[0]; a[i+1] = vec[1];
+-        }
+-        
+-        return a;
+-    };
+-})();
++module.exports = LRUCache;
+ 
+ /**
+- * Returns a string representation of a vector
++ * A [least-recently-used cache](http://en.wikipedia.org/wiki/Cache_algorithms)
++ * with hash lookup made possible by keeping a list of keys in parallel to
++ * an array of dictionary of values
+  *
+- * @param {vec2} vec vector to represent as a string
+- * @returns {String} string representation of the vector
++ * @param {number} max number of permitted values
++ * @param {Function} onRemove callback called with items when they expire
++ * @private
+  */
+-vec2.str = function (a) {
+-    return 'vec2(' + a[0] + ', ' + a[1] + ')';
+-};
++function LRUCache(max, onRemove) {
++    this.max = max;
++    this.onRemove = onRemove;
++    this.reset();
++}
+ 
+ /**
+- * Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)
++ * Clear the cache
+  *
+- * @param {vec2} a The first vector.
+- * @param {vec2} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * @returns {LRUCache} this cache
++ * @private
+  */
+-vec2.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1];
++LRUCache.prototype.reset = function() {
++    for (var key in this.data) {
++        this.onRemove(this.data[key]);
++    }
++
++    this.data = {};
++    this.order = [];
++
++    return this;
+ };
+ 
+ /**
+- * Returns whether or not the vectors have approximately the same elements in the same position.
++ * Add a key, value combination to the cache, trimming its size if this pushes
++ * it over max length.
+  *
+- * @param {vec2} a The first vector.
+- * @param {vec2} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * @param {string} key lookup key for the item
++ * @param {*} data any value
++ *
++ * @returns {LRUCache} this cache
++ * @private
+  */
+-vec2.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1];
+-    var b0 = b[0], b1 = b[1];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)));
+-};
+-
+-module.exports = vec2;
+-
+-},{"./common.js":364}],371:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+-
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
+-
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++LRUCache.prototype.add = function(key, data) {
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    if (this.has(key)) {
++        this.order.splice(this.order.indexOf(key), 1);
++        this.data[key] = data;
++        this.order.push(key);
+ 
+-var glMatrix = require("./common.js");
++    } else {
++        this.data[key] = data;
++        this.order.push(key);
+ 
+-/**
+- * @class 3 Dimensional Vector
+- * @name vec3
+- */
+-var vec3 = {};
++        if (this.order.length > this.max) {
++            var removedData = this.get(this.order[0]);
++            if (removedData) this.onRemove(removedData);
++        }
++    }
+ 
+-/**
+- * Creates a new, empty vec3
+- *
+- * @returns {vec3} a new 3D vector
+- */
+-vec3.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(3);
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    return out;
++    return this;
+ };
+ 
+ /**
+- * Creates a new vec3 initialized with values from an existing vector
++ * Determine whether the value attached to `key` is present
+  *
+- * @param {vec3} a vector to clone
+- * @returns {vec3} a new 3D vector
++ * @param {string} key the key to be looked-up
++ * @returns {boolean} whether the cache has this value
++ * @private
+  */
+-vec3.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(3);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    return out;
++LRUCache.prototype.has = function(key) {
++    return key in this.data;
+ };
+ 
+ /**
+- * Creates a new vec3 initialized with the given values
++ * List all keys in the cache
+  *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @returns {vec3} a new 3D vector
++ * @returns {Array<string>} an array of keys in this cache.
++ * @private
+  */
+-vec3.fromValues = function(x, y, z) {
+-    var out = new glMatrix.ARRAY_TYPE(3);
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    return out;
++LRUCache.prototype.keys = function() {
++    return this.order;
+ };
+ 
+ /**
+- * Copy the values from one vec3 to another
++ * Get the value attached to a specific key. If the key is not found,
++ * returns `null`
+  *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the source vector
+- * @returns {vec3} out
++ * @param {string} key the key to look up
++ * @returns {*} the data, or null if it isn't found
++ * @private
+  */
+-vec3.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    return out;
+-};
++LRUCache.prototype.get = function(key) {
++    if (!this.has(key)) { return null; }
+ 
+-/**
+- * Set the components of a vec3 to the given values
+- *
+- * @param {vec3} out the receiving vector
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @returns {vec3} out
+- */
+-vec3.set = function(out, x, y, z) {
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    return out;
++    var data = this.data[key];
++
++    delete this.data[key];
++    this.order.splice(this.order.indexOf(key), 1);
++
++    return data;
+ };
+ 
+ /**
+- * Adds two vec3's
++ * Change the max size of the cache.
+  *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
++ * @param {number} max the max size of the cache
++ * @returns {LRUCache} this cache
++ * @private
+  */
+-vec3.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    return out;
++LRUCache.prototype.setMaxSize = function(max) {
++    this.max = max;
++
++    while (this.order.length > this.max) {
++        var removedData = this.get(this.order[0]);
++        if (removedData) this.onRemove(removedData);
++    }
++
++    return this;
+ };
+ 
+-/**
+- * Subtracts vector b from vector a
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    return out;
++},{}],359:[function(require,module,exports){
++'use strict';
++
++var config = require('./config');
++var browser = require('./browser');
++
++function normalizeURL(url, pathPrefix, accessToken) {
++    accessToken = accessToken || config.ACCESS_TOKEN;
++
++    if (!accessToken && config.REQUIRE_ACCESS_TOKEN) {
++        throw new Error('An API access token is required to use Mapbox GL. ' +
++            'See https://www.mapbox.com/developers/api/#access-tokens');
++    }
++
++    url = url.replace(/^mapbox:\/\//, config.API_URL + pathPrefix);
++    url += url.indexOf('?') !== -1 ? '&access_token=' : '?access_token=';
++
++    if (config.REQUIRE_ACCESS_TOKEN) {
++        if (accessToken[0] === 's') {
++            throw new Error('Use a public access token (pk.*) with Mapbox GL JS, not a secret access token (sk.*). ' +
++                'See https://www.mapbox.com/developers/api/#access-tokens');
++        }
++
++        url += accessToken;
++    }
++
++    return url;
++}
++
++module.exports.normalizeStyleURL = function(url, accessToken) {
++    if (!url.match(/^mapbox:\/\/styles\//))
++        return url;
++
++    var split = url.split('/');
++    var user = split[3];
++    var style = split[4];
++    var draft = split[5] ? '/draft' : '';
++    return normalizeURL('mapbox://' + user + '/' + style + draft, '/styles/v1/', accessToken);
+ };
+ 
+-/**
+- * Alias for {@link vec3.subtract}
+- * @function
+- */
+-vec3.sub = vec3.subtract;
++module.exports.normalizeSourceURL = function(url, accessToken) {
++    if (!url.match(/^mapbox:\/\//))
++        return url;
+ 
+-/**
+- * Multiplies two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.multiply = function(out, a, b) {
+-    out[0] = a[0] * b[0];
+-    out[1] = a[1] * b[1];
+-    out[2] = a[2] * b[2];
+-    return out;
++    // TileJSON requests need a secure flag appended to their URLs so
++    // that the server knows to send SSL-ified resource references.
++    return normalizeURL(url + '.json', '/v4/', accessToken) + '&secure';
+ };
+ 
+-/**
+- * Alias for {@link vec3.multiply}
+- * @function
+- */
+-vec3.mul = vec3.multiply;
++module.exports.normalizeGlyphsURL = function(url, accessToken) {
++    if (!url.match(/^mapbox:\/\//))
++        return url;
+ 
+-/**
+- * Divides two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.divide = function(out, a, b) {
+-    out[0] = a[0] / b[0];
+-    out[1] = a[1] / b[1];
+-    out[2] = a[2] / b[2];
+-    return out;
++    var user = url.split('/')[3];
++    return normalizeURL('mapbox://' + user + '/{fontstack}/{range}.pbf', '/fonts/v1/', accessToken);
+ };
+ 
+-/**
+- * Alias for {@link vec3.divide}
+- * @function
+- */
+-vec3.div = vec3.divide;
++module.exports.normalizeSpriteURL = function(url, format, ext, accessToken) {
++    if (!url.match(/^mapbox:\/\/sprites\//))
++        return url + format + ext;
+ 
+-/**
+- * Math.ceil the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to ceil
+- * @returns {vec3} out
+- */
+-vec3.ceil = function (out, a) {
+-    out[0] = Math.ceil(a[0]);
+-    out[1] = Math.ceil(a[1]);
+-    out[2] = Math.ceil(a[2]);
+-    return out;
++    var split = url.split('/');
++    var user = split[3];
++    var style = split[4];
++    var draft = split[5] ? '/draft' : '';
++    return normalizeURL('mapbox://' + user + '/' + style + draft + '/sprite' + format + ext, '/styles/v1/', accessToken);
+ };
+ 
+-/**
+- * Math.floor the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to floor
+- * @returns {vec3} out
+- */
+-vec3.floor = function (out, a) {
+-    out[0] = Math.floor(a[0]);
+-    out[1] = Math.floor(a[1]);
+-    out[2] = Math.floor(a[2]);
+-    return out;
++module.exports.normalizeTileURL = function(url, sourceUrl, tileSize) {
++    if (!sourceUrl || !sourceUrl.match(/^mapbox:\/\//))
++        return url;
++
++    // The v4 mapbox tile API supports 512x512 image tiles only when @2x
++    // is appended to the tile URL. If `tileSize: 512` is specified for
++    // a Mapbox raster source force the @2x suffix even if a non hidpi
++    // device.
++    url = url.replace(/([?&]access_token=)tk\.[^&]+/, '$1' + config.ACCESS_TOKEN);
++    var extension = browser.supportsWebp ? 'webp' : '$1';
++    return url.replace(/\.((?:png|jpg)\d*)(?=$|\?)/, browser.devicePixelRatio >= 2 || tileSize === 512 ? '@2x.' + extension : '.' + extension);
+ };
+ 
+-/**
+- * Returns the minimum of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.min = function(out, a, b) {
+-    out[0] = Math.min(a[0], b[0]);
+-    out[1] = Math.min(a[1], b[1]);
+-    out[2] = Math.min(a[2], b[2]);
+-    return out;
++},{"./browser":348,"./config":352}],360:[function(require,module,exports){
++'use strict';
++
++// Note: all "sizes" are measured in bytes
++
++var assert = require('assert');
++
++module.exports = StructArrayType;
++
++var viewTypes = {
++    'Int8': Int8Array,
++    'Uint8': Uint8Array,
++    'Uint8Clamped': Uint8ClampedArray,
++    'Int16': Int16Array,
++    'Uint16': Uint16Array,
++    'Int32': Int32Array,
++    'Uint32': Uint32Array,
++    'Float32': Float32Array,
++    'Float64': Float64Array
+ };
+ 
+ /**
+- * Returns the maximum of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
++ * @typedef StructMember
++ * @private
++ * @property {string} name
++ * @property {string} type
++ * @property {number} components
+  */
+-vec3.max = function(out, a, b) {
+-    out[0] = Math.max(a[0], b[0]);
+-    out[1] = Math.max(a[1], b[1]);
+-    out[2] = Math.max(a[2], b[2]);
+-    return out;
+-};
++
++var structArrayTypeCache = {};
+ 
+ /**
+- * Math.round the components of a vec3
++ * `StructArrayType` is used to create new `StructArray` types.
+  *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to round
+- * @returns {vec3} out
++ * `StructArray` provides an abstraction over `ArrayBuffer` and `TypedArray` making it behave like
++ * an array of typed structs. A StructArray is comprised of elements. Each element has a set of
++ * members that are defined when the `StructArrayType` is created.
++ *
++ * StructArrays useful for creating large arrays that:
++ * - can be transferred from workers as a Transferable object
++ * - can be copied cheaply
++ * - use less memory for lower-precision members
++ * - can be used as buffers in WebGL.
++ *
++ * @class StructArrayType
++ * @param {Array.<StructMember>}
++ * @param options
++ * @param {number} options.alignment Use `4` to align members to 4 byte boundaries. Default is 1.
++ *
++ * @example
++ *
++ * var PointArrayType = new StructArrayType({
++ *  members: [
++ *      { type: 'Int16', name: 'x' },
++ *      { type: 'Int16', name: 'y' }
++ *  ]});
++ *
++ *  var pointArray = new PointArrayType();
++ *  pointArray.emplaceBack(10, 15);
++ *  pointArray.emplaceBack(20, 35);
++ *
++ *  point = pointArray.get(0);
++ *  assert(point.x === 10);
++ *  assert(point.y === 15);
++ *
++ * @private
+  */
+-vec3.round = function (out, a) {
+-    out[0] = Math.round(a[0]);
+-    out[1] = Math.round(a[1]);
+-    out[2] = Math.round(a[2]);
+-    return out;
+-};
++function StructArrayType(options) {
++
++    var key = JSON.stringify(options);
++    if (structArrayTypeCache[key]) {
++        return structArrayTypeCache[key];
++    }
++
++    if (options.alignment === undefined) options.alignment = 1;
++
++    function StructType() {
++        Struct.apply(this, arguments);
++    }
++
++    StructType.prototype = Object.create(Struct.prototype);
++
++    var offset = 0;
++    var maxSize = 0;
++    var usedTypes = ['Uint8'];
++
++    StructType.prototype.members = options.members.map(function(member) {
++        member = {
++            name: member.name,
++            type: member.type,
++            components: member.components || 1
++        };
++
++        assert(member.name.length);
++        assert(member.type in viewTypes);
++
++        if (usedTypes.indexOf(member.type) < 0) usedTypes.push(member.type);
++
++        var typeSize = sizeOf(member.type);
++        maxSize = Math.max(maxSize, typeSize);
++        member.offset = offset = align(offset, Math.max(options.alignment, typeSize));
++
++        for (var c = 0; c < member.components; c++) {
++            Object.defineProperty(StructType.prototype, member.name + (member.components === 1 ? '' : c), {
++                get: createGetter(member, c),
++                set: createSetter(member, c)
++            });
++        }
++
++        offset += typeSize * member.components;
++
++        return member;
++    });
++
++    StructType.prototype.alignment = options.alignment;
++    StructType.prototype.size = align(offset, Math.max(maxSize, options.alignment));
++
++    function StructArrayType() {
++        StructArray.apply(this, arguments);
++        this.members = StructType.prototype.members;
++    }
++
++    StructArrayType.serialize = serializeStructArrayType;
+ 
+-/**
+- * Scales a vec3 by a scalar number
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {vec3} out
+- */
+-vec3.scale = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    return out;
+-};
++    StructArrayType.prototype = Object.create(StructArray.prototype);
++    StructArrayType.prototype.StructType = StructType;
++    StructArrayType.prototype.bytesPerElement = StructType.prototype.size;
++    StructArrayType.prototype.emplaceBack = createEmplaceBack(StructType.prototype.members, StructType.prototype.size);
++    StructArrayType.prototype._usedTypes = usedTypes;
+ 
+-/**
+- * Adds two vec3's after scaling the second operand by a scalar value
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {Number} scale the amount to scale b by before adding
+- * @returns {vec3} out
+- */
+-vec3.scaleAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    return out;
+-};
+ 
+-/**
+- * Calculates the euclidian distance between two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} distance between a and b
+- */
+-vec3.distance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2];
+-    return Math.sqrt(x*x + y*y + z*z);
+-};
++    structArrayTypeCache[key] = StructArrayType;
+ 
+-/**
+- * Alias for {@link vec3.distance}
+- * @function
+- */
+-vec3.dist = vec3.distance;
++    return StructArrayType;
++}
+ 
+ /**
+- * Calculates the squared euclidian distance between two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} squared distance between a and b
++ * Serialize the StructArray type. This serializes the *type* not an instance of the type.
++ * @private
+  */
+-vec3.squaredDistance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2];
+-    return x*x + y*y + z*z;
+-};
++function serializeStructArrayType() {
++    return {
++        members: this.prototype.StructType.prototype.members,
++        alignment: this.prototype.StructType.prototype.alignment,
++        bytesPerElement: this.prototype.bytesPerElement
++    };
++}
+ 
+-/**
+- * Alias for {@link vec3.squaredDistance}
+- * @function
+- */
+-vec3.sqrDist = vec3.squaredDistance;
+ 
+-/**
+- * Calculates the length of a vec3
+- *
+- * @param {vec3} a vector to calculate length of
+- * @returns {Number} length of a
+- */
+-vec3.length = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2];
+-    return Math.sqrt(x*x + y*y + z*z);
+-};
++function align(offset, size) {
++    return Math.ceil(offset / size) * size;
++}
+ 
+-/**
+- * Alias for {@link vec3.length}
+- * @function
+- */
+-vec3.len = vec3.length;
++function sizeOf(type) {
++    return viewTypes[type].BYTES_PER_ELEMENT;
++}
+ 
+-/**
+- * Calculates the squared length of a vec3
+- *
+- * @param {vec3} a vector to calculate squared length of
+- * @returns {Number} squared length of a
+- */
+-vec3.squaredLength = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2];
+-    return x*x + y*y + z*z;
+-};
++function getArrayViewName(type) {
++    return type.toLowerCase();
++}
+ 
+-/**
+- * Alias for {@link vec3.squaredLength}
+- * @function
+- */
+-vec3.sqrLen = vec3.squaredLength;
+ 
+-/**
+- * Negates the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to negate
+- * @returns {vec3} out
++/*
++ * > I saw major perf gains by shortening the source of these generated methods (i.e. renaming
++ * > elementIndex to i) (likely due to v8 inlining heuristics).
++ * - lucaswoj
+  */
+-vec3.negate = function(out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    return out;
+-};
++function createEmplaceBack(members, bytesPerElement) {
++    var usedTypeSizes = [];
++    var argNames = [];
++    var body = '' +
++    'var i = this.length;\n' +
++    'this.resize(this.length + 1);\n';
+ 
+-/**
+- * Returns the inverse of the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to invert
+- * @returns {vec3} out
+- */
+-vec3.inverse = function(out, a) {
+-  out[0] = 1.0 / a[0];
+-  out[1] = 1.0 / a[1];
+-  out[2] = 1.0 / a[2];
+-  return out;
+-};
++    for (var m = 0; m < members.length; m++) {
++        var member = members[m];
++        var size = sizeOf(member.type);
+ 
+-/**
+- * Normalize a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to normalize
+- * @returns {vec3} out
+- */
+-vec3.normalize = function(out, a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2];
+-    var len = x*x + y*y + z*z;
+-    if (len > 0) {
+-        //TODO: evaluate use of glm_invsqrt here?
+-        len = 1 / Math.sqrt(len);
+-        out[0] = a[0] * len;
+-        out[1] = a[1] * len;
+-        out[2] = a[2] * len;
++        if (usedTypeSizes.indexOf(size) < 0) {
++            usedTypeSizes.push(size);
++            body += 'var o' + size.toFixed(0) + ' = i * ' + (bytesPerElement / size).toFixed(0) + ';\n';
++        }
++
++        for (var c = 0; c < member.components; c++) {
++            var argName = 'v' + argNames.length;
++            var index = 'o' + size.toFixed(0) + ' + ' + (member.offset / size + c).toFixed(0);
++            body += 'this.' + getArrayViewName(member.type) + '[' + index + '] = ' + argName + ';\n';
++            argNames.push(argName);
++        }
+     }
+-    return out;
+-};
+ 
+-/**
+- * Calculates the dot product of two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-vec3.dot = function (a, b) {
+-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+-};
++    body += 'return i;';
+ 
+-/**
+- * Computes the cross product of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.cross = function(out, a, b) {
+-    var ax = a[0], ay = a[1], az = a[2],
+-        bx = b[0], by = b[1], bz = b[2];
++    return new Function(argNames, body);
++}
+ 
+-    out[0] = ay * bz - az * by;
+-    out[1] = az * bx - ax * bz;
+-    out[2] = ax * by - ay * bx;
+-    return out;
+-};
++function createMemberComponentString(member, component) {
++    var elementOffset = 'this._pos' + sizeOf(member.type).toFixed(0);
++    var componentOffset = (member.offset / sizeOf(member.type) + component).toFixed(0);
++    var index = elementOffset + ' + ' + componentOffset;
++    return 'this._structArray.' + getArrayViewName(member.type) + '[' + index + ']';
+ 
+-/**
+- * Performs a linear interpolation between two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
+- */
+-vec3.lerp = function (out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1],
+-        az = a[2];
+-    out[0] = ax + t * (b[0] - ax);
+-    out[1] = ay + t * (b[1] - ay);
+-    out[2] = az + t * (b[2] - az);
+-    return out;
+-};
++}
+ 
+-/**
+- * Performs a hermite interpolation with two control points
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {vec3} c the third operand
+- * @param {vec3} d the fourth operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
+- */
+-vec3.hermite = function (out, a, b, c, d, t) {
+-  var factorTimes2 = t * t,
+-      factor1 = factorTimes2 * (2 * t - 3) + 1,
+-      factor2 = factorTimes2 * (t - 2) + t,
+-      factor3 = factorTimes2 * (t - 1),
+-      factor4 = factorTimes2 * (3 - 2 * t);
+-  
+-  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
+-  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
+-  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
+-  
+-  return out;
+-};
++function createGetter(member, c) {
++    return new Function([], 'return ' + createMemberComponentString(member, c) + ';');
++}
++
++function createSetter(member, c) {
++    return new Function(['x'], createMemberComponentString(member, c) + ' = x;');
++}
+ 
+ /**
+- * Performs a bezier interpolation with two control points
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {vec3} c the third operand
+- * @param {vec3} d the fourth operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
++ * @class Struct
++ * @param {StructArray} structArray The StructArray the struct is stored in
++ * @param {number} index The index of the struct in the StructArray.
++ * @private
+  */
+-vec3.bezier = function (out, a, b, c, d, t) {
+-  var inverseFactor = 1 - t,
+-      inverseFactorTimesTwo = inverseFactor * inverseFactor,
+-      factorTimes2 = t * t,
+-      factor1 = inverseFactorTimesTwo * inverseFactor,
+-      factor2 = 3 * t * inverseFactorTimesTwo,
+-      factor3 = 3 * factorTimes2 * inverseFactor,
+-      factor4 = factorTimes2 * t;
+-  
+-  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
+-  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
+-  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
+-  
+-  return out;
+-};
++function Struct(structArray, index) {
++    this._structArray = structArray;
++    this._pos1 = index * this.size;
++    this._pos2 = this._pos1 / 2;
++    this._pos4 = this._pos1 / 4;
++    this._pos8 = this._pos1 / 8;
++}
+ 
+ /**
+- * Generates a random vector with the given scale
+- *
+- * @param {vec3} out the receiving vector
+- * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+- * @returns {vec3} out
++ * @class StructArray
++ * The StructArray class is inherited by the custom StructArrayType classes created with
++ * `new StructArrayType(members, options)`.
++ * @private
+  */
+-vec3.random = function (out, scale) {
+-    scale = scale || 1.0;
++function StructArray(serialized) {
++    if (serialized !== undefined) {
++    // Create from an serialized StructArray
++        this.arrayBuffer = serialized.arrayBuffer;
++        this.length = serialized.length;
++        this.capacity = this.arrayBuffer.byteLength / this.bytesPerElement;
++        this._refreshViews();
+ 
+-    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
+-    var z = (glMatrix.RANDOM() * 2.0) - 1.0;
+-    var zScale = Math.sqrt(1.0-z*z) * scale;
++    // Create a new StructArray
++    } else {
++        this.capacity = -1;
++        this.resize(0);
++    }
++}
+ 
+-    out[0] = Math.cos(r) * zScale;
+-    out[1] = Math.sin(r) * zScale;
+-    out[2] = z * scale;
+-    return out;
+-};
++/**
++ * @property {number}
++ * @private
++ * @readonly
++ */
++StructArray.prototype.DEFAULT_CAPACITY = 128;
+ 
+ /**
+- * Transforms the vec3 with a mat4.
+- * 4th vector component is implicitly '1'
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec3} out
++ * @property {number}
++ * @private
++ * @readonly
+  */
+-vec3.transformMat4 = function(out, a, m) {
+-    var x = a[0], y = a[1], z = a[2],
+-        w = m[3] * x + m[7] * y + m[11] * z + m[15];
+-    w = w || 1.0;
+-    out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w;
+-    out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w;
+-    out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w;
+-    return out;
+-};
++StructArray.prototype.RESIZE_MULTIPLIER = 5;
+ 
+ /**
+- * Transforms the vec3 with a mat3.
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to transform
+- * @param {mat4} m the 3x3 matrix to transform with
+- * @returns {vec3} out
++ * Serialize this StructArray instance
++ * @private
+  */
+-vec3.transformMat3 = function(out, a, m) {
+-    var x = a[0], y = a[1], z = a[2];
+-    out[0] = x * m[0] + y * m[3] + z * m[6];
+-    out[1] = x * m[1] + y * m[4] + z * m[7];
+-    out[2] = x * m[2] + y * m[5] + z * m[8];
+-    return out;
++StructArray.prototype.serialize = function() {
++    this.trim();
++    return {
++        length: this.length,
++        arrayBuffer: this.arrayBuffer
++    };
+ };
+ 
+ /**
+- * Transforms the vec3 with a quat
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to transform
+- * @param {quat} q quaternion to transform with
+- * @returns {vec3} out
++ * Return the Struct at the given location in the array.
++ * @private
++ * @param {number} index The index of the element.
+  */
+-vec3.transformQuat = function(out, a, q) {
+-    // benchmarks: http://jsperf.com/quaternion-transform-vec3-implementations
+-
+-    var x = a[0], y = a[1], z = a[2],
+-        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+-
+-        // calculate quat * vec
+-        ix = qw * x + qy * z - qz * y,
+-        iy = qw * y + qz * x - qx * z,
+-        iz = qw * z + qx * y - qy * x,
+-        iw = -qx * x - qy * y - qz * z;
+-
+-    // calculate result * inverse quat
+-    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+-    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+-    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+-    return out;
++StructArray.prototype.get = function(index) {
++    return new this.StructType(this, index);
+ };
+ 
+ /**
+- * Rotate a 3D vector around the x-axis
+- * @param {vec3} out The receiving vec3
+- * @param {vec3} a The vec3 point to rotate
+- * @param {vec3} b The origin of the rotation
+- * @param {Number} c The angle of rotation
+- * @returns {vec3} out
++ * Resize the array to discard unused capacity.
++ * @private
+  */
+-vec3.rotateX = function(out, a, b, c){
+-   var p = [], r=[];
+-	  //Translate point to the origin
+-	  p[0] = a[0] - b[0];
+-	  p[1] = a[1] - b[1];
+-  	p[2] = a[2] - b[2];
+-
+-	  //perform rotation
+-	  r[0] = p[0];
+-	  r[1] = p[1]*Math.cos(c) - p[2]*Math.sin(c);
+-	  r[2] = p[1]*Math.sin(c) + p[2]*Math.cos(c);
+-
+-	  //translate to correct position
+-	  out[0] = r[0] + b[0];
+-	  out[1] = r[1] + b[1];
+-	  out[2] = r[2] + b[2];
+-
+-  	return out;
++StructArray.prototype.trim = function() {
++    if (this.length !== this.capacity) {
++        this.capacity = this.length;
++        this.arrayBuffer = this.arrayBuffer.slice(0, this.length * this.bytesPerElement);
++        this._refreshViews();
++    }
+ };
+ 
+ /**
+- * Rotate a 3D vector around the y-axis
+- * @param {vec3} out The receiving vec3
+- * @param {vec3} a The vec3 point to rotate
+- * @param {vec3} b The origin of the rotation
+- * @param {Number} c The angle of rotation
+- * @returns {vec3} out
++ * Resize the array.
++ * If `n` is greater than the current length then additional elements with undefined values are added.
++ * If `n` is less than the current length then the array will be reduced to the first `n` elements.
++ * @param {number} n The new size of the array.
+  */
+-vec3.rotateY = function(out, a, b, c){
+-  	var p = [], r=[];
+-  	//Translate point to the origin
+-  	p[0] = a[0] - b[0];
+-  	p[1] = a[1] - b[1];
+-  	p[2] = a[2] - b[2];
+-  
+-  	//perform rotation
+-  	r[0] = p[2]*Math.sin(c) + p[0]*Math.cos(c);
+-  	r[1] = p[1];
+-  	r[2] = p[2]*Math.cos(c) - p[0]*Math.sin(c);
+-  
+-  	//translate to correct position
+-  	out[0] = r[0] + b[0];
+-  	out[1] = r[1] + b[1];
+-  	out[2] = r[2] + b[2];
+-  
+-  	return out;
++StructArray.prototype.resize = function(n) {
++    this.length = n;
++    if (n > this.capacity) {
++        this.capacity = Math.max(n, Math.floor(this.capacity * this.RESIZE_MULTIPLIER), this.DEFAULT_CAPACITY);
++        this.arrayBuffer = new ArrayBuffer(this.capacity * this.bytesPerElement);
++
++        var oldUint8Array = this.uint8;
++        this._refreshViews();
++        if (oldUint8Array) this.uint8.set(oldUint8Array);
++    }
+ };
+ 
+ /**
+- * Rotate a 3D vector around the z-axis
+- * @param {vec3} out The receiving vec3
+- * @param {vec3} a The vec3 point to rotate
+- * @param {vec3} b The origin of the rotation
+- * @param {Number} c The angle of rotation
+- * @returns {vec3} out
+- */
+-vec3.rotateZ = function(out, a, b, c){
+-  	var p = [], r=[];
+-  	//Translate point to the origin
+-  	p[0] = a[0] - b[0];
+-  	p[1] = a[1] - b[1];
+-  	p[2] = a[2] - b[2];
+-  
+-  	//perform rotation
+-  	r[0] = p[0]*Math.cos(c) - p[1]*Math.sin(c);
+-  	r[1] = p[0]*Math.sin(c) + p[1]*Math.cos(c);
+-  	r[2] = p[2];
+-  
+-  	//translate to correct position
+-  	out[0] = r[0] + b[0];
+-  	out[1] = r[1] + b[1];
+-  	out[2] = r[2] + b[2];
+-  
+-  	return out;
++ * Create TypedArray views for the current ArrayBuffer.
++ * @private
++ */
++StructArray.prototype._refreshViews = function() {
++    for (var t = 0; t < this._usedTypes.length; t++) {
++        var type = this._usedTypes[t];
++        this[getArrayViewName(type)] = new viewTypes[type](this.arrayBuffer);
++    }
+ };
+ 
++},{"assert":29}],361:[function(require,module,exports){
++'use strict';
++
++module.exports = resolveTokens;
++
+ /**
+- * Perform some operation over an array of vec3s.
++ * Replace tokens in a string template with values in an object
+  *
+- * @param {Array} a the array of vectors to iterate over
+- * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed
+- * @param {Number} offset Number of elements to skip at the beginning of the array
+- * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array
+- * @param {Function} fn Function to call for each vector in the array
+- * @param {Object} [arg] additional argument to pass to fn
+- * @returns {Array} a
+- * @function
++ * @param {Object} properties a key/value relationship between tokens and replacements
++ * @param {string} text the template string
++ * @returns {string} the template with tokens replaced
++ * @private
+  */
+-vec3.forEach = (function() {
+-    var vec = vec3.create();
+-
+-    return function(a, stride, offset, count, fn, arg) {
+-        var i, l;
+-        if(!stride) {
+-            stride = 3;
+-        }
++function resolveTokens(properties, text) {
++    return text.replace(/{([^{}()\[\]<>$=:;.,^]+)}/g, function(match, key) {
++        return key in properties ? properties[key] : '';
++    });
++}
+ 
+-        if(!offset) {
+-            offset = 0;
+-        }
+-        
+-        if(count) {
+-            l = Math.min((count * stride) + offset, a.length);
+-        } else {
+-            l = a.length;
+-        }
++},{}],362:[function(require,module,exports){
++'use strict';
+ 
+-        for(i = offset; i < l; i += stride) {
+-            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2];
+-            fn(vec, vec, arg);
+-            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2];
+-        }
+-        
+-        return a;
+-    };
+-})();
++var UnitBezier = require('unitbezier');
++var Coordinate = require('../geo/coordinate');
+ 
+ /**
+- * Get the angle between two 3D vectors
+- * @param {vec3} a The first operand
+- * @param {vec3} b The second operand
+- * @returns {Number} The angle in radians
++ * Given a value `t` that varies between 0 and 1, return
++ * an interpolation function that eases between 0 and 1 in a pleasing
++ * cubic in-out fashion.
++ *
++ * @param {number} t input
++ * @returns {number} input
++ * @private
+  */
+-vec3.angle = function(a, b) {
+-   
+-    var tempA = vec3.fromValues(a[0], a[1], a[2]);
+-    var tempB = vec3.fromValues(b[0], b[1], b[2]);
+- 
+-    vec3.normalize(tempA, tempA);
+-    vec3.normalize(tempB, tempB);
+- 
+-    var cosine = vec3.dot(tempA, tempB);
+-
+-    if(cosine > 1.0){
+-        return 0;
+-    } else {
+-        return Math.acos(cosine);
+-    }     
++exports.easeCubicInOut = function (t) {
++    if (t <= 0) return 0;
++    if (t >= 1) return 1;
++    var t2 = t * t,
++        t3 = t2 * t;
++    return 4 * (t < 0.5 ? t3 : 3 * (t - t2) + t3 - 0.75);
+ };
+ 
+ /**
+- * Returns a string representation of a vector
++ * Given given (x, y), (x1, y1) control points for a bezier curve,
++ * return a function that interpolates along that curve.
+  *
+- * @param {vec3} vec vector to represent as a string
+- * @returns {String} string representation of the vector
++ * @param {number} p1x control point 1 x coordinate
++ * @param {number} p1y control point 1 y coordinate
++ * @param {number} p2x control point 2 x coordinate
++ * @param {number} p2y control point 2 y coordinate
++ * @returns {Function} interpolator: receives number value, returns
++ * number value.
++ * @private
+  */
+-vec3.str = function (a) {
+-    return 'vec3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ')';
++exports.bezier = function(p1x, p1y, p2x, p2y) {
++    var bezier = new UnitBezier(p1x, p1y, p2x, p2y);
++    return function(t) {
++        return bezier.solve(t);
++    };
+ };
+ 
+ /**
+- * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
++ * A default bezier-curve powered easing function with
++ * control points (0.25, 0.1) and (0.25, 1)
+  *
+- * @param {vec3} a The first vector.
+- * @param {vec3} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * @param {number} t
++ * @returns {number} output
++ * @private
+  */
+-vec3.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2];
+-};
++exports.ease = exports.bezier(0.25, 0.1, 0.25, 1);
+ 
+ /**
+- * Returns whether or not the vectors have approximately the same elements in the same position.
++ * Given a four-element array of numbers that represents a color in
++ * RGBA, return a version for which the RGB components are multiplied
++ * by the A (alpha) component
+  *
+- * @param {vec3} a The first vector.
+- * @param {vec3} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * @param {Array<number>} color color array
++ * @returns {Array<number>} premultiplied color array
++ * @private
+  */
+-vec3.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2];
+-    var b0 = b[0], b1 = b[1], b2 = b[2];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)));
++exports.premultiply = function (color) {
++    if (!color) return null;
++    var opacity = color[3];
++    return [
++        color[0] * opacity,
++        color[1] * opacity,
++        color[2] * opacity,
++        opacity
++    ];
+ };
+ 
+-module.exports = vec3;
+-
+-},{"./common.js":364}],372:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+-
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
+-
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++/**
++ * constrain n to the given range via min + max
++ *
++ * @param {number} n value
++ * @param {number} min the minimum value to be returned
++ * @param {number} max the maximum value to be returned
++ * @returns {number} the clamped value
++ * @private
++ */
++exports.clamp = function (n, min, max) {
++    return Math.min(max, Math.max(min, n));
++};
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++/*
++ * constrain n to the given range, excluding the minimum, via modular arithmetic
++ * @param {number} n value
++ * @param {number} min the minimum value to be returned, exclusive
++ * @param {number} max the maximum value to be returned, inclusive
++ * @returns {number} constrained number
++ * @private
++ */
++exports.wrap = function (n, min, max) {
++    var d = max - min;
++    var w = ((n - min) % d + d) % d + min;
++    return (w === min) ? max : w;
++};
+ 
+-var glMatrix = require("./common.js");
++/*
++ * return the first non-null and non-undefined argument to this function.
++ * @returns {*} argument
++ * @private
++ */
++exports.coalesce = function() {
++    for (var i = 0; i < arguments.length; i++) {
++        var arg = arguments[i];
++        if (arg !== null && arg !== undefined)
++            return arg;
++    }
++};
+ 
+-/**
+- * @class 4 Dimensional Vector
+- * @name vec4
++/*
++ * Call an asynchronous function on an array of arguments,
++ * calling `callback` with the completed results of all calls.
++ *
++ * @param {Array<*>} array input to each call of the async function.
++ * @param {Function} fn an async function with signature (data, callback)
++ * @param {Function} callback a callback run after all async work is done.
++ * called with an array, containing the results of each async call.
++ * @returns {undefined}
++ * @private
+  */
+-var vec4 = {};
++exports.asyncAll = function (array, fn, callback) {
++    if (!array.length) { return callback(null, []); }
++    var remaining = array.length;
++    var results = new Array(array.length);
++    var error = null;
++    array.forEach(function (item, i) {
++        fn(item, function (err, result) {
++            if (err) error = err;
++            results[i] = result;
++            if (--remaining === 0) callback(error, results);
++        });
++    });
++};
+ 
+-/**
+- * Creates a new, empty vec4
++/*
++ * Compute the difference between the keys in one object and the keys
++ * in another object.
+  *
+- * @returns {vec4} a new 4D vector
++ * @param {Object} obj
++ * @param {Object} other
++ * @returns {Array<string>} keys difference
++ * @private
+  */
+-vec4.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    return out;
++exports.keysDifference = function (obj, other) {
++    var difference = [];
++    for (var i in obj) {
++        if (!(i in other)) {
++            difference.push(i);
++        }
++    }
++    return difference;
+ };
+ 
+ /**
+- * Creates a new vec4 initialized with values from an existing vector
+- *
+- * @param {vec4} a vector to clone
+- * @returns {vec4} a new 4D vector
++ * Given a destination object and optionally many source objects,
++ * copy all properties from the source objects into the destination.
++ * The last source object given overrides properties from previous
++ * source objects.
++ * @param {Object} dest destination object
++ * @param {...Object} sources sources from which properties are pulled
++ * @returns {Object} dest
++ * @private
+  */
+-vec4.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
++exports.extend = function (dest) {
++    for (var i = 1; i < arguments.length; i++) {
++        var src = arguments[i];
++        for (var k in src) {
++            dest[k] = src[k];
++        }
++    }
++    return dest;
+ };
+ 
+ /**
+- * Creates a new vec4 initialized with the given values
+- *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {vec4} a new 4D vector
++ * Extend a destination object with all properties of the src object,
++ * using defineProperty instead of simple assignment.
++ * @param {Object} dest
++ * @param {Object} src
++ * @returns {Object} dest
++ * @private
+  */
+-vec4.fromValues = function(x, y, z, w) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    out[3] = w;
+-    return out;
++exports.extendAll = function (dest, src) {
++    for (var i in src) {
++        Object.defineProperty(dest, i, Object.getOwnPropertyDescriptor(src, i));
++    }
++    return dest;
+ };
+ 
+ /**
+- * Copy the values from one vec4 to another
++ * Extend a parent's prototype with all properties in a properties
++ * object.
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the source vector
+- * @returns {vec4} out
++ * @param {Object} parent
++ * @param {Object} props
++ * @returns {Object}
++ * @private
+  */
+-vec4.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
++exports.inherit = function (parent, props) {
++    var parentProto = typeof parent === 'function' ? parent.prototype : parent,
++        proto = Object.create(parentProto);
++    exports.extendAll(proto, props);
++    return proto;
+ };
+ 
+ /**
+- * Set the components of a vec4 to the given values
++ * Given an object and a number of properties as strings, return version
++ * of that object with only those properties.
+  *
+- * @param {vec4} out the receiving vector
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {vec4} out
++ * @param {Object} src the object
++ * @param {Array<string>} properties an array of property names chosen
++ * to appear on the resulting object.
++ * @returns {Object} object with limited properties.
++ * @example
++ * var foo = { name: 'Charlie', age: 10 };
++ * var justName = pick(foo, ['name']);
++ * // justName = { name: 'Charlie' }
++ * @private
+  */
+-vec4.set = function(out, x, y, z, w) {
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    out[3] = w;
+-    return out;
++exports.pick = function (src, properties) {
++    var result = {};
++    for (var i = 0; i < properties.length; i++) {
++        var k = properties[i];
++        if (k in src) {
++            result[k] = src[k];
++        }
++    }
++    return result;
+ };
+ 
++var id = 1;
++
+ /**
+- * Adds two vec4's
++ * Return a unique numeric id, starting at 1 and incrementing with
++ * each call.
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++ * @returns {number} unique numeric id.
++ * @private
+  */
+-vec4.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    return out;
++exports.uniqueId = function () {
++    return id++;
+ };
+ 
+ /**
+- * Subtracts vector b from vector a
++ * Create a version of `fn` that is only called `time` milliseconds
++ * after its last invocation
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++ * @param {Function} fn the function to be debounced
++ * @param {number} time millseconds after which the function will be invoked
++ * @returns {Function} debounced function
++ * @private
+  */
+-vec4.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    return out;
++exports.debounce = function(fn, time) {
++    var timer, args;
++
++    return function() {
++        args = arguments;
++        clearTimeout(timer);
++
++        timer = setTimeout(function() {
++            fn.apply(null, args);
++        }, time);
++    };
+ };
+ 
+ /**
+- * Alias for {@link vec4.subtract}
+- * @function
++ * Given an array of member function names as strings, replace all of them
++ * with bound versions that will always refer to `context` as `this`. This
++ * is useful for classes where otherwise event bindings would reassign
++ * `this` to the evented object or some other value: this lets you ensure
++ * the `this` value always.
++ *
++ * @param {Array<string>} fns list of member function names
++ * @param {*} context the context value
++ * @returns {undefined} changes functions in-place
++ * @example
++ * function MyClass() {
++ *   bindAll(['ontimer'], this);
++ *   this.name = 'Tom';
++ * }
++ * MyClass.prototype.ontimer = function() {
++ *   alert(this.name);
++ * };
++ * var myClass = new MyClass();
++ * setTimeout(myClass.ontimer, 100);
++ * @private
+  */
+-vec4.sub = vec4.subtract;
++exports.bindAll = function(fns, context) {
++    fns.forEach(function(fn) {
++        context[fn] = context[fn].bind(context);
++    });
++};
+ 
+ /**
+- * Multiplies two vec4's
++ * Given a class, bind all of the methods that look like handlers: that
++ * begin with _on, and bind them to the class.
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++ * @param {Object} context an object with methods
++ * @private
+  */
+-vec4.multiply = function(out, a, b) {
+-    out[0] = a[0] * b[0];
+-    out[1] = a[1] * b[1];
+-    out[2] = a[2] * b[2];
+-    out[3] = a[3] * b[3];
+-    return out;
++exports.bindHandlers = function(context) {
++    for (var i in context) {
++        if (typeof context[i] === 'function' && i.indexOf('_on') === 0) {
++            context[i] = context[i].bind(context);
++        }
++    }
+ };
+ 
+ /**
+- * Alias for {@link vec4.multiply}
+- * @function
++ * Set the 'options' property on `obj` with properties
++ * from the `options` argument. Properties in the `options`
++ * object will override existing properties.
++ *
++ * @param {Object} obj destination object
++ * @param {Object} options object of override options
++ * @returns {Object} derived options object.
++ * @private
+  */
+-vec4.mul = vec4.multiply;
++exports.setOptions = function(obj, options) {
++    if (!obj.hasOwnProperty('options')) {
++        obj.options = obj.options ? Object.create(obj.options) : {};
++    }
++    for (var i in options) {
++        obj.options[i] = options[i];
++    }
++    return obj.options;
++};
+ 
+ /**
+- * Divides two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++ * Given a list of coordinates, get their center as a coordinate.
++ * @param {Array<Coordinate>} coords
++ * @returns {Coordinate} centerpoint
++ * @private
+  */
+-vec4.divide = function(out, a, b) {
+-    out[0] = a[0] / b[0];
+-    out[1] = a[1] / b[1];
+-    out[2] = a[2] / b[2];
+-    out[3] = a[3] / b[3];
+-    return out;
++exports.getCoordinatesCenter = function(coords) {
++    var minX = Infinity;
++    var minY = Infinity;
++    var maxX = -Infinity;
++    var maxY = -Infinity;
++
++    for (var i = 0; i < coords.length; i++) {
++        minX = Math.min(minX, coords[i].column);
++        minY = Math.min(minY, coords[i].row);
++        maxX = Math.max(maxX, coords[i].column);
++        maxY = Math.max(maxY, coords[i].row);
++    }
++
++    var dx = maxX - minX;
++    var dy = maxY - minY;
++    var dMax = Math.max(dx, dy);
++    return new Coordinate((minX + maxX) / 2, (minY + maxY) / 2, 0)
++        .zoomTo(Math.floor(-Math.log(dMax) / Math.LN2));
+ };
+ 
+ /**
+- * Alias for {@link vec4.divide}
+- * @function
+- */
+-vec4.div = vec4.divide;
+-
+-/**
+- * Math.ceil the components of a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to ceil
+- * @returns {vec4} out
++ * Determine if a string ends with a particular substring
++ * @param {string} string
++ * @param {string} suffix
++ * @returns {boolean}
++ * @private
+  */
+-vec4.ceil = function (out, a) {
+-    out[0] = Math.ceil(a[0]);
+-    out[1] = Math.ceil(a[1]);
+-    out[2] = Math.ceil(a[2]);
+-    out[3] = Math.ceil(a[3]);
+-    return out;
++exports.endsWith = function(string, suffix) {
++    return string.indexOf(suffix, string.length - suffix.length) !== -1;
+ };
+ 
+ /**
+- * Math.floor the components of a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to floor
+- * @returns {vec4} out
++ * Determine if a string starts with a particular substring
++ * @param {string} string
++ * @param {string} prefix
++ * @returns {boolean}
++ * @private
+  */
+-vec4.floor = function (out, a) {
+-    out[0] = Math.floor(a[0]);
+-    out[1] = Math.floor(a[1]);
+-    out[2] = Math.floor(a[2]);
+-    out[3] = Math.floor(a[3]);
+-    return out;
++exports.startsWith = function(string, prefix) {
++    return string.indexOf(prefix) === 0;
+ };
+ 
+ /**
+- * Returns the minimum of two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++ * Create an object by mapping all the values of an existing object while
++ * preserving their keys.
++ * @param {Object} input
++ * @param {Function} iterator
++ * @returns {Object}
++ * @private
+  */
+-vec4.min = function(out, a, b) {
+-    out[0] = Math.min(a[0], b[0]);
+-    out[1] = Math.min(a[1], b[1]);
+-    out[2] = Math.min(a[2], b[2]);
+-    out[3] = Math.min(a[3], b[3]);
+-    return out;
++exports.mapObject = function(input, iterator, context) {
++    var output = {};
++    for (var key in input) {
++        output[key] = iterator.call(context || this, input[key], key, input);
++    }
++    return output;
+ };
+ 
+ /**
+- * Returns the maximum of two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++ * Create an object by filtering out values of an existing object
++ * @param {Object} input
++ * @param {Function} iterator
++ * @returns {Object}
++ * @private
+  */
+-vec4.max = function(out, a, b) {
+-    out[0] = Math.max(a[0], b[0]);
+-    out[1] = Math.max(a[1], b[1]);
+-    out[2] = Math.max(a[2], b[2]);
+-    out[3] = Math.max(a[3], b[3]);
+-    return out;
++exports.filterObject = function(input, iterator, context) {
++    var output = {};
++    for (var key in input) {
++        if (iterator.call(context || this, input[key], key, input)) {
++            output[key] = input[key];
++        }
++    }
++    return output;
+ };
+ 
+ /**
+- * Math.round the components of a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to round
+- * @returns {vec4} out
++ * Deeply compares two object literals.
++ * @param {Object} obj1
++ * @param {Object} obj2
++ * @returns {boolean}
++ * @private
+  */
+-vec4.round = function (out, a) {
+-    out[0] = Math.round(a[0]);
+-    out[1] = Math.round(a[1]);
+-    out[2] = Math.round(a[2]);
+-    out[3] = Math.round(a[3]);
+-    return out;
++exports.deepEqual = function deepEqual(a, b) {
++    if (Array.isArray(a)) {
++        if (!Array.isArray(b) || a.length !== b.length) return false;
++        for (var i = 0; i < a.length; i++) {
++            if (!deepEqual(a[i], b[i])) return false;
++        }
++        return true;
++    }
++    if (typeof a === 'object') {
++        if (!(typeof b === 'object')) return false;
++        var keys = Object.keys(a);
++        if (keys.length !== Object.keys(b).length) return false;
++        for (var key in a) {
++            if (!deepEqual(a[key], b[key])) return false;
++        }
++        return true;
++    }
++    return a === b;
+ };
+ 
+ /**
+- * Scales a vec4 by a scalar number
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {vec4} out
++ * Deeply clones two objects.
++ * @param {Object} obj1
++ * @param {Object} obj2
++ * @returns {boolean}
++ * @private
+  */
+-vec4.scale = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    return out;
++exports.clone = function deepEqual(input) {
++    if (Array.isArray(input)) {
++        return input.map(exports.clone);
++    } else if (typeof input === 'object') {
++        return exports.mapObject(input, exports.clone);
++    } else {
++        return input;
++    }
+ };
+ 
+ /**
+- * Adds two vec4's after scaling the second operand by a scalar value
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @param {Number} scale the amount to scale b by before adding
+- * @returns {vec4} out
++ * Check if two arrays have at least one common element.
++ * @param {Array} a
++ * @param {Array} b
++ * @returns {boolean}
++ * @private
+  */
+-vec4.scaleAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    return out;
++exports.arraysIntersect = function(a, b) {
++    for (var l = 0; l < a.length; l++) {
++        if (b.indexOf(a[l]) >= 0) return true;
++    }
++    return false;
+ };
+ 
+-/**
+- * Calculates the euclidian distance between two vec4's
+- *
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {Number} distance between a and b
+- */
+-vec4.distance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2],
+-        w = b[3] - a[3];
+-    return Math.sqrt(x*x + y*y + z*z + w*w);
++},{"../geo/coordinate":268,"unitbezier":452}],363:[function(require,module,exports){
++'use strict';
++
++var VectorTileFeature = require('vector-tile').VectorTileFeature;
++
++module.exports = Feature;
++
++function Feature(vectorTileFeature, z, x, y) {
++    this._vectorTileFeature = vectorTileFeature;
++    vectorTileFeature._z = z;
++    vectorTileFeature._x = x;
++    vectorTileFeature._y = y;
++
++    this.properties = vectorTileFeature.properties;
++
++    if (vectorTileFeature._id) {
++        this.id = vectorTileFeature._id;
++    }
++}
++
++Feature.prototype = {
++    type: "Feature",
++
++    get geometry() {
++        if (this._geometry === undefined) {
++            var feature = this._vectorTileFeature;
++            var coords = projectCoords(
++                feature.loadGeometry(),
++                feature.extent,
++                feature._z, feature._x, feature._y);
++
++            var type = VectorTileFeature.types[feature.type];
++
++            if (type === 'Point' && coords.length === 1) {
++                coords = coords[0][0];
++            } else if (type === 'Point') {
++                coords = coords[0];
++                type = 'MultiPoint';
++            } else if (type === 'LineString' && coords.length === 1) {
++                coords = coords[0];
++            } else if (type === 'LineString') {
++                type = 'MultiLineString';
++            }
++
++            this._geometry = {
++                type: type,
++                coordinates: coords
++            };
++
++            this._vectorTileFeature = null;
++        }
++        return this._geometry;
++    },
++
++    set geometry(g) {
++        this._geometry = g;
++    },
++
++    toJSON: function() {
++        var json = {};
++        for (var i in this) {
++            if (i === '_geometry' || i === '_vectorTileFeature') continue;
++            json[i] = this[i];
++        }
++        return json;
++    }
+ };
+ 
+-/**
+- * Alias for {@link vec4.distance}
+- * @function
+- */
+-vec4.dist = vec4.distance;
++function projectCoords(coords, extent, z, x, y) {
++    var size = extent * Math.pow(2, z),
++        x0 = extent * x,
++        y0 = extent * y;
++    for (var i = 0; i < coords.length; i++) {
++        var line = coords[i];
++        for (var j = 0; j < line.length; j++) {
++            var p = line[j];
++            var y2 = 180 - (p.y + y0) * 360 / size;
++            line[j] = [
++                (p.x + x0) * 360 / size - 180,
++                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
++            ];
++        }
++    }
++    return coords;
++}
++
++},{"vector-tile":456}],364:[function(require,module,exports){
++'use strict'
++
++module.exports = createTable
++
++var chull = require('convex-hull')
++
++function constructVertex(d, a, b) {
++  var x = new Array(d)
++  for(var i=0; i<d; ++i) {
++    x[i] = 0.0
++    if(i === a) {
++      x[i] += 0.5
++    }
++    if(i === b) {
++      x[i] += 0.5
++    }
++  }
++  return x
++}
++
++function constructCell(dimension, mask) {
++  if(mask === 0 || mask === (1<<(dimension+1))-1) {
++    return []
++  }
++  var points = []
++  var index  = []
++  for(var i=0; i<=dimension; ++i) {
++    if(mask & (1<<i)) {
++      points.push(constructVertex(dimension, i-1, i-1))
++      index.push(null)
++      for(var j=0; j<=dimension; ++j) {
++        if(~mask & (1<<j)) {
++          points.push(constructVertex(dimension, i-1, j-1))
++          index.push([i,j])
++        }
++      }
++    }
++  }
++  
++  //Preprocess points so first d+1 points are linearly independent
++  var hull = chull(points)
++  var faces = []
++i_loop:
++  for(var i=0; i<hull.length; ++i) {
++    var face = hull[i]
++    var nface = []
++    for(var j=0; j<face.length; ++j) {
++      if(!index[face[j]]) {
++        continue i_loop
++      }
++      nface.push(index[face[j]].slice())
++    }
++    faces.push(nface)
++  }
++  return faces
++}
++
++function createTable(dimension) {
++  var numCells = 1<<(dimension+1)
++  var result = new Array(numCells)
++  for(var i=0; i<numCells; ++i) {
++    result[i] = constructCell(dimension, i)
++  }
++  return result
++}
++},{"convex-hull":79}],365:[function(require,module,exports){
++/*jshint unused:true*/
++/*
++Input:  matrix      ; a 4x4 matrix
++Output: translation ; a 3 component vector
++        scale       ; a 3 component vector
++        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
++        perspective ; a 4 component vector
++        quaternion  ; a 4 component vector
++Returns false if the matrix cannot be decomposed, true if it can
++
++
++References:
++https://github.com/kamicane/matrix3d/blob/master/lib/Matrix3d.js
++https://github.com/ChromiumWebApps/chromium/blob/master/ui/gfx/transform_util.cc
++http://www.w3.org/TR/css3-transforms/#decomposing-a-3d-matrix
++*/
++
++var normalize = require('./normalize')
++
++var create = require('gl-mat4/create')
++var clone = require('gl-mat4/clone')
++var determinant = require('gl-mat4/determinant')
++var invert = require('gl-mat4/invert')
++var transpose = require('gl-mat4/transpose')
++var vec3 = {
++    length: require('gl-vec3/length'),
++    normalize: require('gl-vec3/normalize'),
++    dot: require('gl-vec3/dot'),
++    cross: require('gl-vec3/cross')
++}
++
++var tmp = create()
++var perspectiveMatrix = create()
++var tmpVec4 = [0, 0, 0, 0]
++var row = [ [0,0,0], [0,0,0], [0,0,0] ]
++var pdum3 = [0,0,0]
++
++module.exports = function decomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
++    if (!translation) translation = [0,0,0]
++    if (!scale) scale = [0,0,0]
++    if (!skew) skew = [0,0,0]
++    if (!perspective) perspective = [0,0,0,1]
++    if (!quaternion) quaternion = [0,0,0,1]
++
++    //normalize, if not possible then bail out early
++    if (!normalize(tmp, matrix))
++        return false
++
++    // perspectiveMatrix is used to solve for perspective, but it also provides
++    // an easy way to test for singularity of the upper 3x3 component.
++    clone(perspectiveMatrix, tmp)
++
++    perspectiveMatrix[3] = 0
++    perspectiveMatrix[7] = 0
++    perspectiveMatrix[11] = 0
++    perspectiveMatrix[15] = 1
++
++    // If the perspectiveMatrix is not invertible, we are also unable to
++    // decompose, so we'll bail early. Constant taken from SkMatrix44::invert.
++    if (Math.abs(determinant(perspectiveMatrix) < 1e-8))
++        return false
++
++    var a03 = tmp[3], a13 = tmp[7], a23 = tmp[11],
++            a30 = tmp[12], a31 = tmp[13], a32 = tmp[14], a33 = tmp[15]
++
++    // First, isolate perspective.
++    if (a03 !== 0 || a13 !== 0 || a23 !== 0) {
++        tmpVec4[0] = a03
++        tmpVec4[1] = a13
++        tmpVec4[2] = a23
++        tmpVec4[3] = a33
++
++        // Solve the equation by inverting perspectiveMatrix and multiplying
++        // rightHandSide by the inverse.
++        // resuing the perspectiveMatrix here since it's no longer needed
++        var ret = invert(perspectiveMatrix, perspectiveMatrix)
++        if (!ret) return false
++        transpose(perspectiveMatrix, perspectiveMatrix)
++
++        //multiply by transposed inverse perspective matrix, into perspective vec4
++        vec4multMat4(perspective, tmpVec4, perspectiveMatrix)
++    } else { 
++        //no perspective
++        perspective[0] = perspective[1] = perspective[2] = 0
++        perspective[3] = 1
++    }
++
++    // Next take care of translation
++    translation[0] = a30
++    translation[1] = a31
++    translation[2] = a32
++
++    // Now get scale and shear. 'row' is a 3 element array of 3 component vectors
++    mat3from4(row, tmp)
++
++    // Compute X scale factor and normalize first row.
++    scale[0] = vec3.length(row[0])
++    vec3.normalize(row[0], row[0])
++
++    // Compute XY shear factor and make 2nd row orthogonal to 1st.
++    skew[0] = vec3.dot(row[0], row[1])
++    combine(row[1], row[1], row[0], 1.0, -skew[0])
++
++    // Now, compute Y scale and normalize 2nd row.
++    scale[1] = vec3.length(row[1])
++    vec3.normalize(row[1], row[1])
++    skew[0] /= scale[1]
++
++    // Compute XZ and YZ shears, orthogonalize 3rd row
++    skew[1] = vec3.dot(row[0], row[2])
++    combine(row[2], row[2], row[0], 1.0, -skew[1])
++    skew[2] = vec3.dot(row[1], row[2])
++    combine(row[2], row[2], row[1], 1.0, -skew[2])
++
++    // Next, get Z scale and normalize 3rd row.
++    scale[2] = vec3.length(row[2])
++    vec3.normalize(row[2], row[2])
++    skew[1] /= scale[2]
++    skew[2] /= scale[2]
++
++
++    // At this point, the matrix (in rows) is orthonormal.
++    // Check for a coordinate system flip.  If the determinant
++    // is -1, then negate the matrix and the scaling factors.
++    vec3.cross(pdum3, row[1], row[2])
++    if (vec3.dot(row[0], pdum3) < 0) {
++        for (var i = 0; i < 3; i++) {
++            scale[i] *= -1;
++            row[i][0] *= -1
++            row[i][1] *= -1
++            row[i][2] *= -1
++        }
++    }
++
++    // Now, get the rotations out
++    quaternion[0] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] - row[1][1] - row[2][2], 0))
++    quaternion[1] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] + row[1][1] - row[2][2], 0))
++    quaternion[2] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] - row[1][1] + row[2][2], 0))
++    quaternion[3] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] + row[1][1] + row[2][2], 0))
++
++    if (row[2][1] > row[1][2])
++        quaternion[0] = -quaternion[0]
++    if (row[0][2] > row[2][0])
++        quaternion[1] = -quaternion[1]
++    if (row[1][0] > row[0][1])
++        quaternion[2] = -quaternion[2]
++    return true
++}
++
++//will be replaced by gl-vec4 eventually
++function vec4multMat4(out, a, m) {
++    var x = a[0], y = a[1], z = a[2], w = a[3];
++    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
++    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
++    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
++    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
++    return out;
++}
++
++//gets upper-left of a 4x4 matrix into a 3x3 of vectors
++function mat3from4(out, mat4x4) {
++    out[0][0] = mat4x4[0]
++    out[0][1] = mat4x4[1]
++    out[0][2] = mat4x4[2]
++    
++    out[1][0] = mat4x4[4]
++    out[1][1] = mat4x4[5]
++    out[1][2] = mat4x4[6]
++
++    out[2][0] = mat4x4[8]
++    out[2][1] = mat4x4[9]
++    out[2][2] = mat4x4[10]
++}
+ 
+-/**
+- * Calculates the squared euclidian distance between two vec4's
+- *
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {Number} squared distance between a and b
+- */
+-vec4.squaredDistance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2],
+-        w = b[3] - a[3];
+-    return x*x + y*y + z*z + w*w;
+-};
++function combine(out, a, b, scale1, scale2) {
++    out[0] = a[0] * scale1 + b[0] * scale2
++    out[1] = a[1] * scale1 + b[1] * scale2
++    out[2] = a[2] * scale1 + b[2] * scale2
++}
++},{"./normalize":366,"gl-mat4/clone":136,"gl-mat4/create":137,"gl-mat4/determinant":138,"gl-mat4/invert":142,"gl-mat4/transpose":152,"gl-vec3/cross":207,"gl-vec3/dot":208,"gl-vec3/length":209,"gl-vec3/normalize":211}],366:[function(require,module,exports){
++module.exports = function normalize(out, mat) {
++    var m44 = mat[15]
++    // Cannot normalize.
++    if (m44 === 0) 
++        return false
++    var scale = 1 / m44
++    for (var i=0; i<16; i++)
++        out[i] = mat[i] * scale
++    return true
++}
++},{}],367:[function(require,module,exports){
++var lerp = require('gl-vec3/lerp')
+ 
+-/**
+- * Alias for {@link vec4.squaredDistance}
+- * @function
+- */
+-vec4.sqrDist = vec4.squaredDistance;
++var recompose = require('mat4-recompose')
++var decompose = require('mat4-decompose')
++var determinant = require('gl-mat4/determinant')
++var slerp = require('quat-slerp')
+ 
+-/**
+- * Calculates the length of a vec4
+- *
+- * @param {vec4} a vector to calculate length of
+- * @returns {Number} length of a
+- */
+-vec4.length = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2],
+-        w = a[3];
+-    return Math.sqrt(x*x + y*y + z*z + w*w);
+-};
++var state0 = state()
++var state1 = state()
++var tmp = state()
+ 
+-/**
+- * Alias for {@link vec4.length}
+- * @function
+- */
+-vec4.len = vec4.length;
++module.exports = interpolate
++function interpolate(out, start, end, alpha) {
++    if (determinant(start) === 0 || determinant(end) === 0)
++        return false
+ 
+-/**
+- * Calculates the squared length of a vec4
+- *
+- * @param {vec4} a vector to calculate squared length of
+- * @returns {Number} squared length of a
+- */
+-vec4.squaredLength = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2],
+-        w = a[3];
+-    return x*x + y*y + z*z + w*w;
+-};
++    //decompose the start and end matrices into individual components
++    var r0 = decompose(start, state0.translate, state0.scale, state0.skew, state0.perspective, state0.quaternion)
++    var r1 = decompose(end, state1.translate, state1.scale, state1.skew, state1.perspective, state1.quaternion)
++    if (!r0 || !r1)
++        return false    
+ 
+-/**
+- * Alias for {@link vec4.squaredLength}
+- * @function
+- */
+-vec4.sqrLen = vec4.squaredLength;
+ 
+-/**
+- * Negates the components of a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to negate
+- * @returns {vec4} out
+- */
+-vec4.negate = function(out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    out[3] = -a[3];
+-    return out;
+-};
++    //now lerp/slerp the start and end components into a temporary     lerp(tmptranslate, state0.translate, state1.translate, alpha)
++    lerp(tmp.translate, state0.translate, state1.translate, alpha)
++    lerp(tmp.skew, state0.skew, state1.skew, alpha)
++    lerp(tmp.scale, state0.scale, state1.scale, alpha)
++    lerp(tmp.perspective, state0.perspective, state1.perspective, alpha)
++    slerp(tmp.quaternion, state0.quaternion, state1.quaternion, alpha)
+ 
+-/**
+- * Returns the inverse of the components of a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to invert
+- * @returns {vec4} out
+- */
+-vec4.inverse = function(out, a) {
+-  out[0] = 1.0 / a[0];
+-  out[1] = 1.0 / a[1];
+-  out[2] = 1.0 / a[2];
+-  out[3] = 1.0 / a[3];
+-  return out;
+-};
++    //and recompose into our 'out' matrix
++    recompose(out, tmp.translate, tmp.scale, tmp.skew, tmp.perspective, tmp.quaternion)
++    return true
++}
+ 
+-/**
+- * Normalize a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to normalize
+- * @returns {vec4} out
+- */
+-vec4.normalize = function(out, a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2],
+-        w = a[3];
+-    var len = x*x + y*y + z*z + w*w;
+-    if (len > 0) {
+-        len = 1 / Math.sqrt(len);
+-        out[0] = x * len;
+-        out[1] = y * len;
+-        out[2] = z * len;
+-        out[3] = w * len;
++function state() {
++    return {
++        translate: vec3(),
++        scale: vec3(1),
++        skew: vec3(),
++        perspective: vec4(),
++        quaternion: vec4()
+     }
+-    return out;
+-};
++}
+ 
+-/**
+- * Calculates the dot product of two vec4's
+- *
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-vec4.dot = function (a, b) {
+-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+-};
++function vec3(n) {
++    return [n||0,n||0,n||0]
++}
+ 
+-/**
+- * Performs a linear interpolation between two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec4} out
+- */
+-vec4.lerp = function (out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1],
+-        az = a[2],
+-        aw = a[3];
+-    out[0] = ax + t * (b[0] - ax);
+-    out[1] = ay + t * (b[1] - ay);
+-    out[2] = az + t * (b[2] - az);
+-    out[3] = aw + t * (b[3] - aw);
+-    return out;
+-};
++function vec4() {
++    return [0,0,0,1]
++}
++},{"gl-mat4/determinant":138,"gl-vec3/lerp":210,"mat4-decompose":365,"mat4-recompose":368,"quat-slerp":404}],368:[function(require,module,exports){
++/*
++Input:  translation ; a 3 component vector
++        scale       ; a 3 component vector
++        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
++        perspective ; a 4 component vector
++        quaternion  ; a 4 component vector
++Output: matrix      ; a 4x4 matrix
+ 
+-/**
+- * Generates a random vector with the given scale
+- *
+- * @param {vec4} out the receiving vector
+- * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+- * @returns {vec4} out
+- */
+-vec4.random = function (out, scale) {
+-    scale = scale || 1.0;
++From: http://www.w3.org/TR/css3-transforms/#recomposing-to-a-3d-matrix
++*/
+ 
+-    //TODO: This is a pretty awful way of doing this. Find something better.
+-    out[0] = glMatrix.RANDOM();
+-    out[1] = glMatrix.RANDOM();
+-    out[2] = glMatrix.RANDOM();
+-    out[3] = glMatrix.RANDOM();
+-    vec4.normalize(out, out);
+-    vec4.scale(out, out, scale);
+-    return out;
+-};
++var mat4 = {
++    identity: require('gl-mat4/identity'),
++    translate: require('gl-mat4/translate'),
++    multiply: require('gl-mat4/multiply'),
++    create: require('gl-mat4/create'),
++    scale: require('gl-mat4/scale'),
++    fromRotationTranslation: require('gl-mat4/fromRotationTranslation')
++}
+ 
+-/**
+- * Transforms the vec4 with a mat4.
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec4} out
+- */
+-vec4.transformMat4 = function(out, a, m) {
+-    var x = a[0], y = a[1], z = a[2], w = a[3];
+-    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
+-    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
+-    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
+-    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
+-    return out;
+-};
++var rotationMatrix = mat4.create()
++var temp = mat4.create()
+ 
+-/**
+- * Transforms the vec4 with a quat
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to transform
+- * @param {quat} q quaternion to transform with
+- * @returns {vec4} out
+- */
+-vec4.transformQuat = function(out, a, q) {
+-    var x = a[0], y = a[1], z = a[2],
+-        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
++module.exports = function recomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
++    mat4.identity(matrix)
+ 
+-        // calculate quat * vec
+-        ix = qw * x + qy * z - qz * y,
+-        iy = qw * y + qz * x - qx * z,
+-        iz = qw * z + qx * y - qy * x,
+-        iw = -qx * x - qy * y - qz * z;
++    //apply translation & rotation
++    mat4.fromRotationTranslation(matrix, quaternion, translation)
+ 
+-    // calculate result * inverse quat
+-    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+-    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+-    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+-    out[3] = a[3];
+-    return out;
+-};
++    //apply perspective
++    matrix[3] = perspective[0]
++    matrix[7] = perspective[1]
++    matrix[11] = perspective[2]
++    matrix[15] = perspective[3]
++        
++    // apply skew
++    // temp is a identity 4x4 matrix initially
++    mat4.identity(temp)
+ 
+-/**
+- * Perform some operation over an array of vec4s.
+- *
+- * @param {Array} a the array of vectors to iterate over
+- * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed
+- * @param {Number} offset Number of elements to skip at the beginning of the array
+- * @param {Number} count Number of vec4s to iterate over. If 0 iterates over entire array
+- * @param {Function} fn Function to call for each vector in the array
+- * @param {Object} [arg] additional argument to pass to fn
+- * @returns {Array} a
+- * @function
+- */
+-vec4.forEach = (function() {
+-    var vec = vec4.create();
++    if (skew[2] !== 0) {
++        temp[9] = skew[2]
++        mat4.multiply(matrix, matrix, temp)
++    }
+ 
+-    return function(a, stride, offset, count, fn, arg) {
+-        var i, l;
+-        if(!stride) {
+-            stride = 4;
+-        }
++    if (skew[1] !== 0) {
++        temp[9] = 0
++        temp[8] = skew[1]
++        mat4.multiply(matrix, matrix, temp)
++    }
+ 
+-        if(!offset) {
+-            offset = 0;
+-        }
+-        
+-        if(count) {
+-            l = Math.min((count * stride) + offset, a.length);
+-        } else {
+-            l = a.length;
+-        }
++    if (skew[0] !== 0) {
++        temp[8] = 0
++        temp[4] = skew[0]
++        mat4.multiply(matrix, matrix, temp)
++    }
+ 
+-        for(i = offset; i < l; i += stride) {
+-            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2]; vec[3] = a[i+3];
+-            fn(vec, vec, arg);
+-            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2]; a[i+3] = vec[3];
+-        }
+-        
+-        return a;
+-    };
+-})();
++    //apply scale
++    mat4.scale(matrix, matrix, scale)
++    return matrix
++}
++},{"gl-mat4/create":137,"gl-mat4/fromRotationTranslation":140,"gl-mat4/identity":141,"gl-mat4/multiply":144,"gl-mat4/scale":150,"gl-mat4/translate":151}],369:[function(require,module,exports){
++'use strict'
+ 
+-/**
+- * Returns a string representation of a vector
+- *
+- * @param {vec4} vec vector to represent as a string
+- * @returns {String} string representation of the vector
+- */
+-vec4.str = function (a) {
+-    return 'vec4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+-};
++var bsearch   = require('binary-search-bounds')
++var m4interp  = require('mat4-interpolate')
++var invert44  = require('gl-mat4/invert')
++var rotateX   = require('gl-mat4/rotateX')
++var rotateY   = require('gl-mat4/rotateY')
++var rotateZ   = require('gl-mat4/rotateZ')
++var lookAt    = require('gl-mat4/lookAt')
++var translate = require('gl-mat4/translate')
++var scale     = require('gl-mat4/scale')
++var normalize = require('gl-vec3/normalize')
+ 
+-/**
+- * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {vec4} a The first vector.
+- * @param {vec4} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-vec4.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
+-};
++var DEFAULT_CENTER = [0,0,0]
+ 
+-/**
+- * Returns whether or not the vectors have approximately the same elements in the same position.
+- *
+- * @param {vec4} a The first vector.
+- * @param {vec4} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-vec4.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
+-};
++module.exports = createMatrixCameraController
+ 
+-module.exports = vec4;
++function MatrixCameraController(initialMatrix) {
++  this._components    = initialMatrix.slice()
++  this._time          = [0]
++  this.prevMatrix     = initialMatrix.slice()
++  this.nextMatrix     = initialMatrix.slice()
++  this.computedMatrix = initialMatrix.slice()
++  this.computedInverse = initialMatrix.slice()
++  this.computedEye    = [0,0,0]
++  this.computedUp     = [0,0,0]
++  this.computedCenter = [0,0,0]
++  this.computedRadius = [0]
++  this._limits        = [-Infinity, Infinity]
++}
+ 
+-},{"./common.js":364}],373:[function(require,module,exports){
+-'use strict';
++var proto = MatrixCameraController.prototype
+ 
+-module.exports = GridIndex;
++proto.recalcMatrix = function(t) {
++  var time = this._time
++  var tidx = bsearch.le(time, t)
++  var mat = this.computedMatrix
++  if(tidx < 0) {
++    return
++  }
++  var comps = this._components
++  if(tidx === time.length-1) {
++    var ptr = 16*tidx
++    for(var i=0; i<16; ++i) {
++      mat[i] = comps[ptr++]
++    }
++  } else {
++    var dt = (time[tidx+1] - time[tidx])
++    var ptr = 16*tidx
++    var prev = this.prevMatrix
++    var allEqual = true
++    for(var i=0; i<16; ++i) {
++      prev[i] = comps[ptr++]
++    }
++    var next = this.nextMatrix
++    for(var i=0; i<16; ++i) {
++      next[i] = comps[ptr++]
++      allEqual = allEqual && (prev[i] === next[i])
++    }
++    if(dt < 1e-6 || allEqual) {
++      for(var i=0; i<16; ++i) {
++        mat[i] = prev[i]
++      }
++    } else {
++      m4interp(mat, prev, next, (t - time[tidx])/dt)
++    }
++  }
+ 
+-var NUM_PARAMS = 3;
++  var up = this.computedUp
++  up[0] = mat[1]
++  up[1] = mat[5]
++  up[2] = mat[6]
++  normalize(up, up)
+ 
+-function GridIndex(extent, n, padding) {
+-    var cells = this.cells = [];
++  var imat = this.computedInverse
++  invert44(imat, mat)
++  var eye = this.computedEye
++  var w = imat[15]
++  eye[0] = imat[12]/w
++  eye[1] = imat[13]/w
++  eye[2] = imat[14]/w
+ 
+-    if (extent instanceof ArrayBuffer) {
+-        this.arrayBuffer = extent;
+-        var array = new Int32Array(this.arrayBuffer);
+-        extent = array[0];
+-        n = array[1];
+-        padding = array[2];
++  var center = this.computedCenter
++  var radius = Math.exp(this.computedRadius[0])
++  for(var i=0; i<3; ++i) {
++    center[i] = eye[i] - mat[2+4*i] * radius
++  }
++}
+ 
+-        this.d = n + 2 * padding;
+-        for (var k = 0; k < this.d * this.d; k++) {
+-            var start = array[NUM_PARAMS + k];
+-            var end = array[NUM_PARAMS + k + 1];
+-            cells.push(start === end ?
+-                    null :
+-                    array.subarray(start, end));
+-        }
+-        var keysOffset = array[NUM_PARAMS + cells.length];
+-        var bboxesOffset = array[NUM_PARAMS + cells.length + 1];
+-        this.keys = array.subarray(keysOffset, bboxesOffset);
+-        this.bboxes = array.subarray(bboxesOffset);
++proto.idle = function(t) {
++  if(t < this.lastT()) {
++    return
++  }
++  var mc = this._components
++  var ptr = mc.length-16
++  for(var i=0; i<16; ++i) {
++    mc.push(mc[ptr++])
++  }
++  this._time.push(t)
++}
+ 
+-        this.insert = this._insertReadonly;
++proto.flush = function(t) {
++  var idx = bsearch.gt(this._time, t) - 2
++  if(idx < 0) {
++    return
++  }
++  this._time.slice(0, idx)
++  this._components.slice(0, 16*idx)
++}
++
++proto.lastT = function() {
++  return this._time[this._time.length-1]
++}
++
++proto.lookAt = function(t, eye, center, up) {
++  this.recalcMatrix(t)
++  eye    = eye || this.computedEye
++  center = center || DEFAULT_CENTER
++  up     = up || this.computedUp
++  this.setMatrix(t, lookAt(this.computedMatrix, eye, center, up))
++  var d2 = 0.0
++  for(var i=0; i<3; ++i) {
++    d2 += Math.pow(center[i] - eye[i], 2)
++  }
++  d2 = Math.log(Math.sqrt(d2))
++  this.computedRadius[0] = d2
++}
+ 
+-    } else {
+-        this.d = n + 2 * padding;
+-        for (var i = 0; i < this.d * this.d; i++) {
+-            cells.push([]);
+-        }
+-        this.keys = [];
+-        this.bboxes = [];
+-    }
++proto.rotate = function(t, yaw, pitch, roll) {
++  this.recalcMatrix(t)
++  var mat = this.computedInverse
++  if(yaw)   rotateY(mat, mat, yaw)
++  if(pitch) rotateX(mat, mat, pitch)
++  if(roll)  rotateZ(mat, mat, roll)
++  this.setMatrix(t, invert44(this.computedMatrix, mat))
++}
+ 
+-    this.n = n;
+-    this.extent = extent;
+-    this.padding = padding;
+-    this.scale = n / extent;
+-    this.uid = 0;
++var tvec = [0,0,0]
+ 
+-    var p = (padding / n) * extent;
+-    this.min = -p;
+-    this.max = extent + p;
++proto.pan = function(t, dx, dy, dz) {
++  tvec[0] = -(dx || 0.0)
++  tvec[1] = -(dy || 0.0)
++  tvec[2] = -(dz || 0.0)
++  this.recalcMatrix(t)
++  var mat = this.computedInverse
++  translate(mat, mat, tvec)
++  this.setMatrix(t, invert44(mat, mat))
+ }
+ 
++proto.translate = function(t, dx, dy, dz) {
++  tvec[0] = dx || 0.0
++  tvec[1] = dy || 0.0
++  tvec[2] = dz || 0.0
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
++  translate(mat, mat, tvec)
++  this.setMatrix(t, mat)
++}
+ 
+-GridIndex.prototype.insert = function(key, x1, y1, x2, y2) {
+-    this._forEachCell(x1, y1, x2, y2, this._insertCell, this.uid++);
+-    this.keys.push(key);
+-    this.bboxes.push(x1);
+-    this.bboxes.push(y1);
+-    this.bboxes.push(x2);
+-    this.bboxes.push(y2);
+-};
+-
+-GridIndex.prototype._insertReadonly = function() {
+-    throw 'Cannot insert into a GridIndex created from an ArrayBuffer.';
+-};
++proto.setMatrix = function(t, mat) {
++  if(t < this.lastT()) {
++    return
++  }
++  this._time.push(t)
++  for(var i=0; i<16; ++i) {
++    this._components.push(mat[i])
++  }
++}
+ 
+-GridIndex.prototype._insertCell = function(x1, y1, x2, y2, cellIndex, uid) {
+-    this.cells[cellIndex].push(uid);
+-};
++proto.setDistance = function(t, d) {
++  this.computedRadius[0] = d
++}
+ 
+-GridIndex.prototype.query = function(x1, y1, x2, y2) {
+-    var min = this.min;
+-    var max = this.max;
+-    if (x1 <= min && y1 <= min && max <= x2 && max <= y2) {
+-        return this.keys.slice();
++proto.setDistanceLimits = function(a,b) {
++  var lim = this._limits
++  lim[0] = a
++  lim[1] = b
++}
+ 
+-    } else {
+-        var result = [];
+-        var seenUids = {};
+-        this._forEachCell(x1, y1, x2, y2, this._queryCell, result, seenUids);
+-        return result;
+-    }
+-};
++proto.getDistanceLimits = function(out) {
++  var lim = this._limits
++  if(out) {
++    out[0] = lim[0]
++    out[1] = lim[1]
++    return out
++  }
++  return lim
++}
+ 
+-GridIndex.prototype._queryCell = function(x1, y1, x2, y2, cellIndex, result, seenUids) {
+-    var cell = this.cells[cellIndex];
+-    if (cell !== null) {
+-        var keys = this.keys;
+-        var bboxes = this.bboxes;
+-        for (var u = 0; u < cell.length; u++) {
+-            var uid = cell[u];
+-            if (seenUids[uid] === undefined) {
+-                var offset = uid * 4;
+-                if ((x1 <= bboxes[offset + 2]) &&
+-                    (y1 <= bboxes[offset + 3]) &&
+-                    (x2 >= bboxes[offset + 0]) &&
+-                    (y2 >= bboxes[offset + 1])) {
+-                    seenUids[uid] = true;
+-                    result.push(keys[uid]);
+-                } else {
+-                    seenUids[uid] = false;
+-                }
+-            }
+-        }
+-    }
+-};
++function createMatrixCameraController(options) {
++  options = options || {}
++  var matrix = options.matrix || 
++              [1,0,0,0,
++               0,1,0,0,
++               0,0,1,0,
++               0,0,0,1]
++  return new MatrixCameraController(matrix)
++}
++},{"binary-search-bounds":48,"gl-mat4/invert":142,"gl-mat4/lookAt":143,"gl-mat4/rotateX":147,"gl-mat4/rotateY":148,"gl-mat4/rotateZ":149,"gl-mat4/scale":150,"gl-mat4/translate":151,"gl-vec3/normalize":211,"mat4-interpolate":367}],370:[function(require,module,exports){
++'use strict'
+ 
+-GridIndex.prototype._forEachCell = function(x1, y1, x2, y2, fn, arg1, arg2) {
+-    var cx1 = this._convertToCellCoord(x1);
+-    var cy1 = this._convertToCellCoord(y1);
+-    var cx2 = this._convertToCellCoord(x2);
+-    var cy2 = this._convertToCellCoord(y2);
+-    for (var x = cx1; x <= cx2; x++) {
+-        for (var y = cy1; y <= cy2; y++) {
+-            var cellIndex = this.d * y + x;
+-            if (fn.call(this, x1, y1, x2, y2, cellIndex, arg1, arg2)) return;
+-        }
+-    }
+-};
++module.exports = monotoneConvexHull2D
+ 
+-GridIndex.prototype._convertToCellCoord = function(x) {
+-    return Math.max(0, Math.min(this.d - 1, Math.floor(x * this.scale) + this.padding));
+-};
++var orient = require('robust-orientation')[3]
+ 
+-GridIndex.prototype.toArrayBuffer = function() {
+-    if (this.arrayBuffer) return this.arrayBuffer;
++function monotoneConvexHull2D(points) {
++  var n = points.length
+ 
+-    var cells = this.cells;
++  if(n < 3) {
++    var result = new Array(n)
++    for(var i=0; i<n; ++i) {
++      result[i] = i
++    }
+ 
+-    var metadataLength = NUM_PARAMS + this.cells.length + 1 + 1;
+-    var totalCellLength = 0;
+-    for (var i = 0; i < this.cells.length; i++) {
+-        totalCellLength += this.cells[i].length;
++    if(n === 2 &&
++       points[0][0] === points[1][0] &&
++       points[0][1] === points[1][1]) {
++      return [0]
+     }
+ 
+-    var array = new Int32Array(metadataLength + totalCellLength + this.keys.length + this.bboxes.length);
+-    array[0] = this.extent;
+-    array[1] = this.n;
+-    array[2] = this.padding;
++    return result
++  }
+ 
+-    var offset = metadataLength;
+-    for (var k = 0; k < cells.length; k++) {
+-        var cell = cells[k];
+-        array[NUM_PARAMS + k] = offset;
+-        array.set(cell, offset);
+-        offset += cell.length;
++  //Sort point indices along x-axis
++  var sorted = new Array(n)
++  for(var i=0; i<n; ++i) {
++    sorted[i] = i
++  }
++  sorted.sort(function(a,b) {
++    var d = points[a][0]-points[b][0]
++    if(d) {
++      return d
+     }
++    return points[a][1] - points[b][1]
++  })
+ 
+-    array[NUM_PARAMS + cells.length] = offset;
+-    array.set(this.keys, offset);
+-    offset += this.keys.length;
++  //Construct upper and lower hulls
++  var lower = [sorted[0], sorted[1]]
++  var upper = [sorted[0], sorted[1]]
+ 
+-    array[NUM_PARAMS + cells.length + 1] = offset;
+-    array.set(this.bboxes, offset);
+-    offset += this.bboxes.length;
++  for(var i=2; i<n; ++i) {
++    var idx = sorted[i]
++    var p   = points[idx]
+ 
+-    return array.buffer;
+-};
++    //Insert into lower list
++    var m = lower.length
++    while(m > 1 && orient(
++        points[lower[m-2]], 
++        points[lower[m-1]], 
++        p) <= 0) {
++      m -= 1
++      lower.pop()
++    }
++    lower.push(idx)
+ 
+-},{}],374:[function(require,module,exports){
+-'use strict';
++    //Insert into upper list
++    m = upper.length
++    while(m > 1 && orient(
++        points[upper[m-2]], 
++        points[upper[m-1]], 
++        p) >= 0) {
++      m -= 1
++      upper.pop()
++    }
++    upper.push(idx)
++  }
+ 
+-function createFunction(parameters, defaultType) {
+-    var fun;
++  //Merge lists together
++  var result = new Array(upper.length + lower.length - 2)
++  var ptr    = 0
++  for(var i=0, nl=lower.length; i<nl; ++i) {
++    result[ptr++] = lower[i]
++  }
++  for(var j=upper.length-2; j>0; --j) {
++    result[ptr++] = upper[j]
++  }
+ 
+-    if (!isFunctionDefinition(parameters)) {
+-        fun = function() { return parameters; };
+-        fun.isFeatureConstant = true;
+-        fun.isZoomConstant = true;
++  //Return result
++  return result
++}
++},{"robust-orientation":418}],371:[function(require,module,exports){
++'use strict'
+ 
+-    } else {
+-        var zoomAndFeatureDependent = typeof parameters.stops[0][0] === 'object';
+-        var featureDependent = zoomAndFeatureDependent || parameters.property !== undefined;
+-        var zoomDependent = zoomAndFeatureDependent || !featureDependent;
+-        var type = parameters.type || defaultType || 'exponential';
++module.exports = mouseListen
+ 
+-        var innerFun;
+-        if (type === 'exponential') {
+-            innerFun = evaluateExponentialFunction;
+-        } else if (type === 'interval') {
+-            innerFun = evaluateIntervalFunction;
+-        } else if (type === 'categorical') {
+-            innerFun = evaluateCategoricalFunction;
+-        } else {
+-            throw new Error('Unknown function type "' + type + '"');
+-        }
++var mouse = require('mouse-event')
+ 
+-        if (zoomAndFeatureDependent) {
+-            var featureFunctions = {};
+-            var featureFunctionStops = [];
+-            for (var s = 0; s < parameters.stops.length; s++) {
+-                var stop = parameters.stops[s];
+-                if (featureFunctions[stop[0].zoom] === undefined) {
+-                    featureFunctions[stop[0].zoom] = {
+-                        zoom: stop[0].zoom,
+-                        type: parameters.type,
+-                        property: parameters.property,
+-                        stops: []
+-                    };
+-                }
+-                featureFunctions[stop[0].zoom].stops.push([stop[0].value, stop[1]]);
+-            }
++function mouseListen(element, callback) {
++  if(!callback) {
++    callback = element
++    element = window
++  }
+ 
+-            for (var z in featureFunctions) {
+-                featureFunctionStops.push([featureFunctions[z].zoom, createFunction(featureFunctions[z])]);
+-            }
+-            fun = function(zoom, feature) {
+-                return evaluateExponentialFunction({ stops: featureFunctionStops, base: parameters.base }, zoom)(zoom, feature);
+-            };
+-            fun.isFeatureConstant = false;
+-            fun.isZoomConstant = false;
++  var buttonState = 0
++  var x = 0
++  var y = 0
++  var mods = {
++    shift:   false,
++    alt:     false,
++    control: false,
++    meta:    false
++  }
++  var attached = false
+ 
+-        } else if (zoomDependent) {
+-            fun = function(zoom) {
+-                return innerFun(parameters, zoom);
+-            };
+-            fun.isFeatureConstant = true;
+-            fun.isZoomConstant = false;
+-        } else {
+-            fun = function(zoom, feature) {
+-                return innerFun(parameters, feature[parameters.property]);
+-            };
+-            fun.isFeatureConstant = false;
+-            fun.isZoomConstant = true;
+-        }
++  function updateMods(ev) {
++    var changed = false
++    if('altKey' in ev) {
++      changed = changed || ev.altKey !== mods.alt
++      mods.alt = !!ev.altKey
+     }
+-
+-    return fun;
+-}
+-
+-function evaluateCategoricalFunction(parameters, input) {
+-    for (var i = 0; i < parameters.stops.length; i++) {
+-        if (input === parameters.stops[i][0]) {
+-            return parameters.stops[i][1];
+-        }
++    if('shiftKey' in ev) {
++      changed = changed || ev.shiftKey !== mods.shift
++      mods.shift = !!ev.shiftKey
+     }
+-    return parameters.stops[0][1];
+-}
+-
+-function evaluateIntervalFunction(parameters, input) {
+-    for (var i = 0; i < parameters.stops.length; i++) {
+-        if (input < parameters.stops[i][0]) break;
++    if('ctrlKey' in ev) {
++      changed = changed || ev.ctrlKey !== mods.control
++      mods.control = !!ev.ctrlKey
+     }
+-    return parameters.stops[Math.max(i - 1, 0)][1];
+-}
+-
+-function evaluateExponentialFunction(parameters, input) {
+-    var base = parameters.base !== undefined ? parameters.base : 1;
++    if('metaKey' in ev) {
++      changed = changed || ev.metaKey !== mods.meta
++      mods.meta = !!ev.metaKey
++    }
++    return changed
++  }
+ 
+-    var i = 0;
+-    while (true) {
+-        if (i >= parameters.stops.length) break;
+-        else if (input <= parameters.stops[i][0]) break;
+-        else i++;
++  function handleEvent(nextButtons, ev) {
++    var nextX = mouse.x(ev)
++    var nextY = mouse.y(ev)
++    if('buttons' in ev) {
++      nextButtons = ev.buttons|0
++    }
++    if(nextButtons !== buttonState ||
++       nextX !== x ||
++       nextY !== y ||
++       updateMods(ev)) {
++      buttonState = nextButtons|0
++      x = nextX||0
++      y = nextY||0
++      callback && callback(buttonState, x, y, mods)
+     }
++  }
+ 
+-    if (i === 0) {
+-        return parameters.stops[i][1];
++  function clearState(ev) {
++    handleEvent(0, ev)
++  }
+ 
+-    } else if (i === parameters.stops.length) {
+-        return parameters.stops[i - 1][1];
++  function handleBlur() {
++    if(buttonState ||
++      x ||
++      y ||
++      mods.shift ||
++      mods.alt ||
++      mods.meta ||
++      mods.control) {
+ 
+-    } else {
+-        return interpolate(
+-            input,
+-            base,
+-            parameters.stops[i - 1][0],
+-            parameters.stops[i][0],
+-            parameters.stops[i - 1][1],
+-            parameters.stops[i][1]
+-        );
++      x = y = 0
++      buttonState = 0
++      mods.shift = mods.alt = mods.control = mods.meta = false
++      callback && callback(0, 0, 0, mods)
+     }
+-}
+-
++  }
+ 
+-function interpolate(input, base, inputLower, inputUpper, outputLower, outputUpper) {
+-    if (typeof outputLower === 'function') {
+-        return function() {
+-            var evaluatedLower = outputLower.apply(undefined, arguments);
+-            var evaluatedUpper = outputUpper.apply(undefined, arguments);
+-            return interpolate(input, base, inputLower, inputUpper, evaluatedLower, evaluatedUpper);
+-        };
+-    } else if (outputLower.length) {
+-        return interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper);
+-    } else {
+-        return interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper);
++  function handleMods(ev) {
++    if(updateMods(ev)) {
++      callback && callback(buttonState, x, y, mods)
+     }
+-}
+-
+-function interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper) {
+-    var difference =  inputUpper - inputLower;
+-    var progress = input - inputLower;
++  }
+ 
+-    var ratio;
+-    if (base === 1) {
+-        ratio = progress / difference;
++  function handleMouseMove(ev) {
++    if(mouse.buttons(ev) === 0) {
++      handleEvent(0, ev)
+     } else {
+-        ratio = (Math.pow(base, progress) - 1) / (Math.pow(base, difference) - 1);
+-    }
+-
+-    return (outputLower * (1 - ratio)) + (outputUpper * ratio);
+-}
+-
+-function interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper) {
+-    var output = [];
+-    for (var i = 0; i < outputLower.length; i++) {
+-        output[i] = interpolateNumber(input, base, inputLower, inputUpper, outputLower[i], outputUpper[i]);
++      handleEvent(buttonState, ev)
+     }
+-    return output;
+-}
+-
+-function isFunctionDefinition(value) {
+-    return typeof value === 'object' && value.stops;
+-}
+-
+-
+-module.exports.isFunctionDefinition = isFunctionDefinition;
+-
+-module.exports.interpolated = function(parameters) {
+-    return createFunction(parameters, 'exponential');
+-};
++  }
+ 
+-module.exports['piecewise-constant'] = function(parameters) {
+-    return createFunction(parameters, 'interval');
+-};
++  function handleMouseDown(ev) {
++    handleEvent(buttonState | mouse.buttons(ev), ev)
++  }
+ 
+-},{}],375:[function(require,module,exports){
+-'use strict';
++  function handleMouseUp(ev) {
++    handleEvent(buttonState & ~mouse.buttons(ev), ev)
++  }
+ 
+-if (typeof module !== 'undefined' && module.exports) {
+-    module.exports = isSupported;
+-} else if (window) {
+-    window.mapboxgl = window.mapboxgl || {};
+-    window.mapboxgl.supported = isSupported;
+-}
++  function attachListeners() {
++    if(attached) {
++      return
++    }
++    attached = true
+ 
+-/**
+- * Test whether the current browser supports Mapbox GL JS
+- * @param {Object} options
+- * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
+- *   if the performance of Mapbox GL JS would be dramatically worse than
+- *   expected (i.e. a software renderer is would be used)
+- * @return {boolean}
+- */
+-function isSupported(options) {
+-    return !!(
+-        isBrowser() &&
+-        isArraySupported() &&
+-        isFunctionSupported() &&
+-        isObjectSupported() &&
+-        isJSONSupported() &&
+-        isWorkerSupported() &&
+-        isWebGLSupportedCached(options && options.failIfMajorPerformanceCaveat)
+-    );
+-}
++    element.addEventListener('mousemove', handleMouseMove)
+ 
+-function isBrowser() {
+-    return typeof window !== 'undefined' && typeof document !== 'undefined';
+-}
++    element.addEventListener('mousedown', handleMouseDown)
+ 
+-function isArraySupported() {
+-    return (
+-        Array.prototype &&
+-        Array.prototype.every &&
+-        Array.prototype.filter &&
+-        Array.prototype.forEach &&
+-        Array.prototype.indexOf &&
+-        Array.prototype.lastIndexOf &&
+-        Array.prototype.map &&
+-        Array.prototype.some &&
+-        Array.prototype.reduce &&
+-        Array.prototype.reduceRight &&
+-        Array.isArray
+-    );
+-}
++    element.addEventListener('mouseup', handleMouseUp)
+ 
+-function isFunctionSupported() {
+-    return Function.prototype && Function.prototype.bind;
+-}
++    element.addEventListener('mouseleave', clearState)
++    element.addEventListener('mouseenter', clearState)
++    element.addEventListener('mouseout', clearState)
++    element.addEventListener('mouseover', clearState)
+ 
+-function isObjectSupported() {
+-    return (
+-        Object.keys &&
+-        Object.create &&
+-        Object.getPrototypeOf &&
+-        Object.getOwnPropertyNames &&
+-        Object.isSealed &&
+-        Object.isFrozen &&
+-        Object.isExtensible &&
+-        Object.getOwnPropertyDescriptor &&
+-        Object.defineProperty &&
+-        Object.defineProperties &&
+-        Object.seal &&
+-        Object.freeze &&
+-        Object.preventExtensions
+-    );
+-}
++    element.addEventListener('blur', handleBlur)
+ 
+-function isJSONSupported() {
+-    return 'JSON' in window && 'parse' in JSON && 'stringify' in JSON;
+-}
++    element.addEventListener('keyup', handleMods)
++    element.addEventListener('keydown', handleMods)
++    element.addEventListener('keypress', handleMods)
+ 
+-function isWorkerSupported() {
+-    return 'Worker' in window;
+-}
++    if(element !== window) {
++      window.addEventListener('blur', handleBlur)
+ 
+-var isWebGLSupportedCache = {};
+-function isWebGLSupportedCached(failIfMajorPerformanceCaveat) {
++      window.addEventListener('keyup', handleMods)
++      window.addEventListener('keydown', handleMods)
++      window.addEventListener('keypress', handleMods)
++    }
++  }
+ 
+-    if (isWebGLSupportedCache[failIfMajorPerformanceCaveat] === undefined) {
+-        isWebGLSupportedCache[failIfMajorPerformanceCaveat] = isWebGLSupported(failIfMajorPerformanceCaveat);
++  function detachListeners() {
++    if(!attached) {
++      return
+     }
++    attached = false
+ 
+-    return isWebGLSupportedCache[failIfMajorPerformanceCaveat];
+-}
++    element.removeEventListener('mousemove', handleMouseMove)
+ 
+-isSupported.webGLContextAttributes = {
+-    antialias: false,
+-    alpha: true,
+-    stencil: true,
+-    depth: true
+-};
++    element.removeEventListener('mousedown', handleMouseDown)
+ 
+-function isWebGLSupported(failIfMajorPerformanceCaveat) {
++    element.removeEventListener('mouseup', handleMouseUp)
+ 
+-    var canvas = document.createElement('canvas');
++    element.removeEventListener('mouseleave', clearState)
++    element.removeEventListener('mouseenter', clearState)
++    element.removeEventListener('mouseout', clearState)
++    element.removeEventListener('mouseover', clearState)
+ 
+-    var attributes = Object.create(isSupported.webGLContextAttributes);
+-    attributes.failIfMajorPerformanceCaveat = failIfMajorPerformanceCaveat;
++    element.removeEventListener('blur', handleBlur)
+ 
+-    if (canvas.probablySupportsContext) {
+-        return (
+-            canvas.probablySupportsContext('webgl', attributes) ||
+-            canvas.probablySupportsContext('experimental-webgl', attributes)
+-        );
++    element.removeEventListener('keyup', handleMods)
++    element.removeEventListener('keydown', handleMods)
++    element.removeEventListener('keypress', handleMods)
+ 
+-    } else if (canvas.supportsContext) {
+-        return (
+-            canvas.supportsContext('webgl', attributes) ||
+-            canvas.supportsContext('experimental-webgl', attributes)
+-        );
++    if(element !== window) {
++      window.removeEventListener('blur', handleBlur)
+ 
+-    } else {
+-        return (
+-            canvas.getContext('webgl', attributes) ||
+-            canvas.getContext('experimental-webgl', attributes)
+-        );
++      window.removeEventListener('keyup', handleMods)
++      window.removeEventListener('keydown', handleMods)
++      window.removeEventListener('keypress', handleMods)
+     }
+-}
++  }
+ 
+-},{}],376:[function(require,module,exports){
+-'use strict';
++  //Attach listeners
++  attachListeners()
+ 
+-var format = require('util').format;
++  var result = {
++    element: element
++  }
+ 
+-function ValidationError(key, value /*, message, ...*/) {
+-    this.message = (
+-        (key ? key + ': ' : '') +
+-        format.apply(format, Array.prototype.slice.call(arguments, 2))
+-    );
++  Object.defineProperties(result, {
++    enabled: {
++      get: function() { return attached },
++      set: function(f) {
++        if(f) {
++          attachListeners()
++        } else {
++          detachListeners
++        }
++      },
++      enumerable: true
++    },
++    buttons: {
++      get: function() { return buttonState },
++      enumerable: true
++    },
++    x: {
++      get: function() { return x },
++      enumerable: true
++    },
++    y: {
++      get: function() { return y },
++      enumerable: true
++    },
++    mods: {
++      get: function() { return mods },
++      enumerable: true
++    }
++  })
+ 
+-    if (value !== null && value !== undefined && value.__line__) {
+-        this.line = value.__line__;
++  return result
++}
++
++},{"mouse-event":372}],372:[function(require,module,exports){
++'use strict'
++
++function mouseButtons(ev) {
++  if(typeof ev === 'object') {
++    if('buttons' in ev) {
++      return ev.buttons
++    } else if('which' in ev) {
++      var b = ev.which
++      if(b === 2) {
++        return 4
++      } else if(b === 3) {
++        return 2
++      } else if(b > 0) {
++        return 1<<(b-1)
++      }
++    } else if('button' in ev) {
++      var b = ev.button
++      if(b === 1) {
++        return 4
++      } else if(b === 2) {
++        return 2
++      } else if(b >= 0) {
++        return 1<<b
++      }
+     }
++  }
++  return 0
+ }
++exports.buttons = mouseButtons
+ 
+-module.exports = ValidationError;
++function mouseElement(ev) {
++  return ev.target || ev.srcElement || window
++}
++exports.element = mouseElement
+ 
+-},{"util":62}],377:[function(require,module,exports){
+-'use strict';
++function mouseRelativeX(ev) {
++  if(typeof ev === 'object') {
++    if('offsetX' in ev) {
++      return ev.offsetX
++    }
++    var target = mouseElement(ev)
++    var bounds = target.getBoundingClientRect()
++    return ev.clientX - bounds.left
++  }
++  return 0
++}
++exports.x = mouseRelativeX
+ 
+-module.exports = function (output) {
+-    for (var i = 1; i < arguments.length; i++) {
+-        var input = arguments[i];
+-        for (var k in input) {
+-            output[k] = input[k];
+-        }
++function mouseRelativeY(ev) {
++  if(typeof ev === 'object') {
++    if('offsetY' in ev) {
++      return ev.offsetY
+     }
+-    return output;
+-};
++    var target = mouseElement(ev)
++    var bounds = target.getBoundingClientRect()
++    return ev.clientY - bounds.top
++  }
++  return 0
++}
++exports.y = mouseRelativeY
+ 
+-},{}],378:[function(require,module,exports){
+-'use strict';
++},{}],373:[function(require,module,exports){
++'use strict'
+ 
+-module.exports = function getType(val) {
+-    if (val instanceof Number) {
+-        return 'number';
+-    } else if (val instanceof String) {
+-        return 'string';
+-    } else if (val instanceof Boolean) {
+-        return 'boolean';
+-    } else if (Array.isArray(val)) {
+-        return 'array';
+-    } else if (val === null) {
+-        return 'null';
+-    } else {
+-        return typeof val;
+-    }
+-};
++var toPX = require('to-px')
+ 
+-},{}],379:[function(require,module,exports){
+-'use strict';
++module.exports = mouseWheelListen
+ 
+-// Turn jsonlint-lines-primitives objects into primitive objects
+-module.exports = function unbundle(value) {
+-    if (value instanceof Number || value instanceof String || value instanceof Boolean) {
+-        return value.valueOf();
+-    } else {
+-        return value;
++function mouseWheelListen(element, callback, noScroll) {
++  if(typeof element === 'function') {
++    noScroll = !!callback
++    callback = element
++    element = window
++  }
++  var lineHeight = toPX('ex', element)
++  var listener = function(ev) {
++    if(noScroll) {
++      ev.preventDefault()
+     }
+-};
++    var dx = ev.deltaX || 0
++    var dy = ev.deltaY || 0
++    var dz = ev.deltaZ || 0
++    var mode = ev.deltaMode
++    var scale = 1
++    switch(mode) {
++      case 1:
++        scale = lineHeight
++      break
++      case 2:
++        scale = window.innerHeight
++      break
++    }
++    dx *= scale
++    dy *= scale
++    dz *= scale
++    if(dx || dy || dz) {
++      return callback(dx, dy, dz, ev)
++    }
++  }
++  element.addEventListener('wheel', listener)
++  return listener
++}
+ 
+-},{}],380:[function(require,module,exports){
+-'use strict';
++},{"to-px":443}],374:[function(require,module,exports){
++"use strict"
+ 
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var extend = require('../util/extend');
++var pool = require("typedarray-pool")
+ 
+-// Main recursive validation function. Tracks:
+-//
+-// - key: string representing location of validation in style tree. Used only
+-//   for more informative error reporting.
+-// - value: current value from style being evaluated. May be anything from a
+-//   high level object that needs to be descended into deeper or a simple
+-//   scalar value.
+-// - valueSpec: current spec being evaluated. Tracks value.
++module.exports = createSurfaceExtractor
+ 
+-module.exports = function validate(options) {
++//Helper macros
++function array(i) {
++  return "a" + i
++}
++function data(i) {
++  return "d" + i
++}
++function cube(i,bitmask) {
++  return "c" + i + "_" + bitmask
++}
++function shape(i) {
++  return "s" + i
++}
++function stride(i,j) {
++  return "t" + i + "_" + j
++}
++function offset(i) {
++  return "o" + i
++}
++function scalar(i) {
++  return "x" + i
++}
++function pointer(i) {
++  return "p" + i
++}
++function delta(i,bitmask) {
++  return "d" + i + "_" + bitmask
++}
++function index(i) {
++  return "i" + i
++}
++function step(i,j) {
++  return "u" + i + "_" + j
++}
++function pcube(bitmask) {
++  return "b" + bitmask
++}
++function qcube(bitmask) {
++  return "y" + bitmask
++}
++function pdelta(bitmask) {
++  return "e" + bitmask
++}
++function vert(i) {
++  return "v" + i
++}
++var VERTEX_IDS = "V"
++var PHASES = "P"
++var VERTEX_COUNT = "N"
++var POOL_SIZE = "Q"
++var POINTER = "X"
++var TEMPORARY = "T"
+ 
+-    var validateFunction = require('./validate_function');
+-    var validateObject = require('./validate_object');
+-    var VALIDATORS = {
+-        '*': function() {
+-            return [];
+-        },
+-        'array': require('./validate_array'),
+-        'boolean': require('./validate_boolean'),
+-        'number': require('./validate_number'),
+-        'color': require('./validate_color'),
+-        'constants': require('./validate_constants'),
+-        'enum': require('./validate_enum'),
+-        'filter': require('./validate_filter'),
+-        'function': require('./validate_function'),
+-        'layer': require('./validate_layer'),
+-        'object': require('./validate_object'),
+-        'source': require('./validate_source'),
+-        'string': require('./validate_string')
+-    };
++function permBitmask(dimension, mask, order) {
++  var r = 0
++  for(var i=0; i<dimension; ++i) {
++    if(mask & (1<<i)) {
++      r |= (1<<order[i])
++    }
++  }
++  return r
++}
+ 
+-    var value = options.value;
+-    var valueSpec = options.valueSpec;
+-    var key = options.key;
+-    var styleSpec = options.styleSpec;
+-    var style = options.style;
++//Generates the surface procedure
++function compileSurfaceProcedure(vertexFunc, faceFunc, phaseFunc, scalarArgs, order, typesig) {
++  var arrayArgs = typesig.length
++  var dimension = order.length
+ 
+-    if (getType(value) === 'string' && value[0] === '@') {
+-        if (styleSpec.$version > 7) {
+-            return [new ValidationError(key, value, 'constants have been deprecated as of v8')];
+-        }
+-        if (!(value in style.constants)) {
+-            return [new ValidationError(key, value, 'constant "%s" not found', value)];
+-        }
+-        options = extend({}, options, { value: style.constants[value] });
+-    }
++  if(dimension < 2) {
++    throw new Error("ndarray-extract-contour: Dimension must be at least 2")
++  }
+ 
+-    if (valueSpec.function && getType(value) === 'object') {
+-        return validateFunction(options);
++  var funcName = "extractContour" + order.join("_")
++  var code = []
++  var vars = []
++  var args = []
+ 
+-    } else if (valueSpec.type && VALIDATORS[valueSpec.type]) {
+-        return VALIDATORS[valueSpec.type](options);
++  //Assemble arguments
++  for(var i=0; i<arrayArgs; ++i) {
++    args.push(array(i))  
++  }
++  for(var i=0; i<scalarArgs; ++i) {
++    args.push(scalar(i))
++  }
+ 
+-    } else {
+-        return validateObject(extend({}, options, {
+-            valueSpec: valueSpec.type ? styleSpec[valueSpec.type] : valueSpec
+-        }));
++  //Shape
++  for(var i=0; i<dimension; ++i) {
++    vars.push(shape(i) + "=" + array(0) + ".shape[" + i + "]|0")
++  }
++  //Data, stride, offset pointers
++  for(var i=0; i<arrayArgs; ++i) {
++    vars.push(data(i) + "=" + array(i) + ".data",
++              offset(i) + "=" + array(i) + ".offset|0")
++    for(var j=0; j<dimension; ++j) {
++      vars.push(stride(i,j) + "=" + array(i) + ".stride[" + j + "]|0")
+     }
+-};
+-
+-},{"../error/validation_error":376,"../util/extend":377,"../util/get_type":378,"./validate_array":381,"./validate_boolean":382,"./validate_color":383,"./validate_constants":384,"./validate_enum":385,"./validate_filter":386,"./validate_function":387,"./validate_layer":389,"./validate_number":391,"./validate_object":392,"./validate_source":394,"./validate_string":395}],381:[function(require,module,exports){
+-'use strict';
++  }
++  //Pointer, delta and cube variables
++  for(var i=0; i<arrayArgs; ++i) {
++    vars.push(pointer(i) + "=" + offset(i))
++    vars.push(cube(i,0))
++    for(var j=1; j<(1<<dimension); ++j) {
++      var ptrStr = []
++      for(var k=0; k<dimension; ++k) {
++        if(j & (1<<k)) {
++          ptrStr.push("-" + stride(i,k))
++        }
++      }
++      vars.push(delta(i,j) + "=(" + ptrStr.join("") + ")|0")
++      vars.push(cube(i,j) + "=0")
++    }
++  }
++  //Create step variables
++  for(var i=0; i<arrayArgs; ++i) {
++    for(var j=0; j<dimension; ++j) {
++      var stepVal = [ stride(i,order[j]) ]
++      if(j > 0) {
++        stepVal.push(stride(i, order[j-1]) + "*" + shape(order[j-1]) )
++      }
++      vars.push(step(i,order[j]) + "=(" + stepVal.join("-") + ")|0")
++    }
++  }
++  //Create index variables
++  for(var i=0; i<dimension; ++i) {
++    vars.push(index(i) + "=0")
++  }
++  //Vertex count
++  vars.push(VERTEX_COUNT + "=0")
++  //Compute pool size, initialize pool step
++  var sizeVariable = ["2"]
++  for(var i=dimension-2; i>=0; --i) {
++    sizeVariable.push(shape(order[i]))
++  }
++  //Previous phases and vertex_ids
++  vars.push(POOL_SIZE + "=(" + sizeVariable.join("*") + ")|0",
++            PHASES + "=mallocUint32(" + POOL_SIZE + ")",
++            VERTEX_IDS + "=mallocUint32(" + POOL_SIZE + ")",
++            POINTER + "=0")
++  //Create cube variables for phases
++  vars.push(pcube(0) + "=0")
++  for(var j=1; j<(1<<dimension); ++j) {
++    var cubeDelta = []
++    var cubeStep = [ ]
++    for(var k=0; k<dimension; ++k) {
++      if(j & (1<<k)) {
++        if(cubeStep.length === 0) {
++          cubeDelta.push("1")
++        } else {
++          cubeDelta.unshift(cubeStep.join("*"))
++        }
++      }
++      cubeStep.push(shape(order[k]))
++    }
++    var signFlag = ""
++    if(cubeDelta[0].indexOf(shape(order[dimension-2])) < 0) {
++      signFlag = "-"
++    }
++    var jperm = permBitmask(dimension, j, order)
++    vars.push(pdelta(jperm) + "=(-" + cubeDelta.join("-") + ")|0",
++              qcube(jperm) + "=(" + signFlag + cubeDelta.join("-") + ")|0",
++              pcube(jperm) + "=0")
++  }
++  vars.push(vert(0) + "=0", TEMPORARY + "=0")
+ 
+-var getType = require('../util/get_type');
+-var validate = require('./validate');
+-var ValidationError = require('../error/validation_error');
++  function forLoopBegin(i, start) {
++    code.push("for(", index(order[i]), "=", start, ";",
++      index(order[i]), "<", shape(order[i]), ";",
++      "++", index(order[i]), "){")
++  }
+ 
+-module.exports = function validateArray(options) {
+-    var array = options.value;
+-    var arraySpec = options.valueSpec;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var key = options.key;
+-    var validateArrayElement = options.arrayElementValidator || validate;
++  function forLoopEnd(i) {
++    for(var j=0; j<arrayArgs; ++j) {
++      code.push(pointer(j), "+=", step(j,order[i]), ";")
++    }
++    code.push("}")
++  }
+ 
+-    if (getType(array) !== 'array') {
+-        return [new ValidationError(key, array, 'array expected, %s found', getType(array))];
++  function fillEmptySlice(k) {
++    for(var i=k-1; i>=0; --i) {
++      forLoopBegin(i, 0) 
++    }
++    var phaseFuncArgs = []
++    for(var i=0; i<arrayArgs; ++i) {
++      if(typesig[i]) {
++        phaseFuncArgs.push(data(i) + ".get(" + pointer(i) + ")")
++      } else {
++        phaseFuncArgs.push(data(i) + "[" + pointer(i) + "]")
++      }
++    }
++    for(var i=0; i<scalarArgs; ++i) {
++      phaseFuncArgs.push(scalar(i))
++    }
++    code.push(PHASES, "[", POINTER, "++]=phase(", phaseFuncArgs.join(), ");")
++    for(var i=0; i<k; ++i) {
++      forLoopEnd(i)
+     }
+-
+-    if (arraySpec.length && array.length !== arraySpec.length) {
+-        return [new ValidationError(key, array, 'array length %d expected, length %d found', arraySpec.length, array.length)];
++    for(var j=0; j<arrayArgs; ++j) {
++      code.push(pointer(j), "+=", step(j,order[k]), ";")
+     }
++  }
+ 
+-    if (arraySpec['min-length'] && array.length < arraySpec['min-length']) {
+-        return [new ValidationError(key, array, 'array length at least %d expected, length %d found', arraySpec['min-length'], array.length)];
++  function processGridCell(mask) {
++    //Read in local data
++    for(var i=0; i<arrayArgs; ++i) {
++      if(typesig[i]) {
++        code.push(cube(i,0), "=", data(i), ".get(", pointer(i), ");")
++      } else {
++        code.push(cube(i,0), "=", data(i), "[", pointer(i), "];")
++      }
+     }
+ 
+-    var arrayElementSpec = {
+-        "type": arraySpec.value
+-    };
+-
+-    if (styleSpec.$version < 7) {
+-        arrayElementSpec.function = arraySpec.function;
++    //Read in phase
++    var phaseFuncArgs = []
++    for(var i=0; i<arrayArgs; ++i) {
++      phaseFuncArgs.push(cube(i,0))
+     }
+-
+-    if (getType(arraySpec.value) === 'object') {
+-        arrayElementSpec = arraySpec.value;
++    for(var i=0; i<scalarArgs; ++i) {
++      phaseFuncArgs.push(scalar(i))
+     }
+-
+-    var errors = [];
+-    for (var i = 0; i < array.length; i++) {
+-        errors = errors.concat(validateArrayElement({
+-            array: array,
+-            arrayIndex: i,
+-            value: array[i],
+-            valueSpec: arrayElementSpec,
+-            style: style,
+-            styleSpec: styleSpec,
+-            key: key + '[' + i + ']'
+-        }));
++    
++    code.push(pcube(0), "=", PHASES, "[", POINTER, "]=phase(", phaseFuncArgs.join(), ");")
++    
++    //Read in other cube data
++    for(var j=1; j<(1<<dimension); ++j) {
++      code.push(pcube(j), "=", PHASES, "[", POINTER, "+", pdelta(j), "];")
+     }
+-    return errors;
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378,"./validate":380}],382:[function(require,module,exports){
+-'use strict';
+-
+-var getType = require('../util/get_type');
+-var ValidationError = require('../error/validation_error');
+-
+-module.exports = function validateBoolean(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var type = getType(value);
+ 
+-    if (type !== 'boolean') {
+-        return [new ValidationError(key, value, 'boolean expected, %s found', type)];
++    //Check for boundary crossing
++    var vertexPredicate = []
++    for(var j=1; j<(1<<dimension); ++j) {
++      vertexPredicate.push("(" + pcube(0) + "!==" + pcube(j) + ")")
+     }
++    code.push("if(", vertexPredicate.join("||"), "){")
+ 
+-    return [];
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378}],383:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var parseCSSColor = require('csscolorparser').parseCSSColor;
+-
+-module.exports = function validateColor(options) {
+-    var key = options.key;
+-    var value = options.value;
+-    var type = getType(value);
+-
+-    if (type !== 'string') {
+-        return [new ValidationError(key, value, 'color expected, %s found', type)];
++    //Read in boundary data
++    var vertexArgs = []
++    for(var i=0; i<dimension; ++i) {
++      vertexArgs.push(index(i))
+     }
+-
+-    if (parseCSSColor(value) === null) {
+-        return [new ValidationError(key, value, 'color expected, "%s" found', value)];
++    for(var i=0; i<arrayArgs; ++i) {
++      vertexArgs.push(cube(i,0))
++      for(var j=1; j<(1<<dimension); ++j) {
++        if(typesig[i]) {
++          code.push(cube(i,j), "=", data(i), ".get(", pointer(i), "+", delta(i,j), ");")
++        } else {
++          code.push(cube(i,j), "=", data(i), "[", pointer(i), "+", delta(i,j), "];")
++        }
++        vertexArgs.push(cube(i,j))
++      }
++    }
++    for(var i=0; i<(1<<dimension); ++i) {
++      vertexArgs.push(pcube(i))
++    }
++    for(var i=0; i<scalarArgs; ++i) {
++      vertexArgs.push(scalar(i))
+     }
+ 
+-    return [];
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378,"csscolorparser":351}],384:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-
+-module.exports = function validateConstants(options) {
+-    var key = options.key;
+-    var constants = options.value;
+-    var styleSpec = options.styleSpec;
++    //Generate vertex
++    code.push("vertex(", vertexArgs.join(), ");",
++      vert(0), "=", VERTEX_IDS, "[", POINTER, "]=", VERTEX_COUNT, "++;")
+ 
+-    if (styleSpec.$version > 7) {
+-        if (constants) {
+-            return [new ValidationError(key, constants, 'constants have been deprecated as of v8')];
+-        } else {
+-            return [];
++    //Check for face crossings
++    var base = (1<<dimension)-1
++    var corner = pcube(base)
++    for(var j=0; j<dimension; ++j) {
++      if((mask & ~(1<<j))===0) {
++        //Check face
++        var subset = base^(1<<j)
++        var edge = pcube(subset)
++        var faceArgs = [ ]
++        for(var k=subset; k>0; k=(k-1)&subset) {
++          faceArgs.push(VERTEX_IDS + "[" + POINTER + "+" + pdelta(k) + "]")
+         }
+-    } else {
+-        var type = getType(constants);
+-        if (type !== 'object') {
+-            return [new ValidationError(key, constants, 'object expected, %s found', type)];
++        faceArgs.push(vert(0))
++        for(var k=0; k<arrayArgs; ++k) {
++          if(j&1) {
++            faceArgs.push(cube(k,base), cube(k,subset))
++          } else {
++            faceArgs.push(cube(k,subset), cube(k,base))
++          }
+         }
+-
+-        var errors = [];
+-        for (var constantName in constants) {
+-            if (constantName[0] !== '@') {
+-                errors.push(new ValidationError(key + '.' + constantName, constants[constantName], 'constants must start with "@"'));
+-            }
++        if(j&1) {
++          faceArgs.push(corner, edge)
++        } else {
++          faceArgs.push(edge, corner)
+         }
+-        return errors;
++        for(var k=0; k<scalarArgs; ++k) {
++          faceArgs.push(scalar(k))
++        }
++        code.push("if(", corner, "!==", edge, "){",
++          "face(", faceArgs.join(), ")}")
++      }
+     }
++    
++    //Increment pointer, close off if statement
++    code.push("}",
++      POINTER, "+=1;")
++  }
+ 
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378}],385:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var unbundle = require('../util/unbundle_jsonlint');
+-
+-module.exports = function validateEnum(options) {
+-    var key = options.key;
+-    var value = options.value;
+-    var valueSpec = options.valueSpec;
+-    var errors = [];
+-
+-    if (valueSpec.values.indexOf(unbundle(value)) === -1) {
+-        errors.push(new ValidationError(key, value, 'expected one of [%s], %s found', valueSpec.values.join(', '), value));
++  function flip() {
++    for(var j=1; j<(1<<dimension); ++j) {
++      code.push(TEMPORARY, "=", pdelta(j), ";",
++                pdelta(j), "=", qcube(j), ";",
++                qcube(j), "=", TEMPORARY, ";")
+     }
+-    return errors;
+-};
+-
+-},{"../error/validation_error":376,"../util/unbundle_jsonlint":379}],386:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var validateEnum = require('./validate_enum');
+-var getType = require('../util/get_type');
+-var unbundle = require('../util/unbundle_jsonlint');
+-
+-module.exports = function validateFilter(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var styleSpec = options.styleSpec;
+-    var type;
+-
+-    var errors = [];
++  }
+ 
+-    if (getType(value) !== 'array') {
+-        return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
++  function createLoop(i, mask) {
++    if(i < 0) {
++      processGridCell(mask)
++      return
+     }
++    fillEmptySlice(i)
++    code.push("if(", shape(order[i]), ">0){",
++      index(order[i]), "=1;")
++    createLoop(i-1, mask|(1<<order[i]))
+ 
+-    if (value.length < 1) {
+-        return [new ValidationError(key, value, 'filter array must have at least 1 element')];
++    for(var j=0; j<arrayArgs; ++j) {
++      code.push(pointer(j), "+=", step(j,order[i]), ";")
+     }
+-
+-    errors = errors.concat(validateEnum({
+-        key: key + '[0]',
+-        value: value[0],
+-        valueSpec: styleSpec.filter_operator,
+-        style: options.style,
+-        styleSpec: options.styleSpec
+-    }));
+-
+-    switch (unbundle(value[0])) {
+-        case '<':
+-        case '<=':
+-        case '>':
+-        case '>=':
+-            if (value.length >= 2 && value[1] == '$type') {
+-                errors.push(new ValidationError(key, value, '"$type" cannot be use with operator "%s"', value[0]));
+-            }
+-        /* falls through */
+-        case '==':
+-        case '!=':
+-            if (value.length != 3) {
+-                errors.push(new ValidationError(key, value, 'filter array for operator "%s" must have 3 elements', value[0]));
+-            }
+-        /* falls through */
+-        case 'in':
+-        case '!in':
+-            if (value.length >= 2) {
+-                type = getType(value[1]);
+-                if (type !== 'string') {
+-                    errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
+-                } else if (value[1][0] === '@') {
+-                    errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
+-                }
+-            }
+-            for (var i = 2; i < value.length; i++) {
+-                type = getType(value[i]);
+-                if (value[1] == '$type') {
+-                    errors = errors.concat(validateEnum({
+-                        key: key + '[' + i + ']',
+-                        value: value[i],
+-                        valueSpec: styleSpec.geometry_type,
+-                        style: options.style,
+-                        styleSpec: options.styleSpec
+-                    }));
+-                } else if (type === 'string' && value[i][0] === '@') {
+-                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'filter value cannot be a constant'));
+-                } else if (type !== 'string' && type !== 'number' && type !== 'boolean') {
+-                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'string, number, or boolean expected, %s found', type));
+-                }
+-            }
+-            break;
+-
+-        case 'any':
+-        case 'all':
+-        case 'none':
+-            for (i = 1; i < value.length; i++) {
+-                errors = errors.concat(validateFilter({
+-                    key: key + '[' + i + ']',
+-                    value: value[i],
+-                    style: options.style,
+-                    styleSpec: options.styleSpec
+-                }));
+-            }
+-            break;
+-
+-        case 'has':
+-        case '!has':
+-            type = getType(value[1]);
+-            if (value.length !== 2) {
+-                errors.push(new ValidationError(key, value, 'filter array for "%s" operator must have 2 elements', value[0]));
+-            } else if (type !== 'string') {
+-                errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
+-            } else if (value[1][0] === '@') {
+-                errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
+-            }
+-            break;
+-
++    if(i === dimension-1) {
++      code.push(POINTER, "=0;")
++      flip()
+     }
+-
+-    return errors;
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378,"../util/unbundle_jsonlint":379,"./validate_enum":385}],387:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var validate = require('./validate');
+-var validateObject = require('./validate_object');
+-var validateArray = require('./validate_array');
+-var validateNumber = require('./validate_number');
+-
+-module.exports = function validateFunction(options) {
+-    var originalValueSpec = options.valueSpec;
+-    var originalValue = options.value;
+-
+-    var stopKeyType;
+-
+-    return validateObject({
+-        key: options.key,
+-        value: options.value,
+-        valueSpec: options.styleSpec.function,
+-        style: options.style,
+-        styleSpec: options.styleSpec,
+-        objectElementValidators: { stops: validateFunctionStops }
+-    });
+-
+-    function validateFunctionStops(options) {
+-        var errors = [];
+-        var value = options.value;
+-
+-        errors = errors.concat(validateArray({
+-            key: options.key,
+-            value: value,
+-            valueSpec: options.valueSpec,
+-            style: options.style,
+-            styleSpec: options.styleSpec,
+-            arrayElementValidator: validateFunctionStop
+-        }));
+-
+-        if (getType(value) === 'array' && value.length === 0) {
+-            errors.push(new ValidationError(options.key, value, 'array must have at least one stop'));
+-        }
+-
+-        return errors;
++    forLoopBegin(i, 2)
++    createLoop(i-1, mask)
++    if(i === dimension-1) {
++      code.push("if(", index(order[dimension-1]), "&1){",
++        POINTER, "=0;}")
++      flip()
+     }
++    forLoopEnd(i)
++    code.push("}")
++  }
+ 
+-    function validateFunctionStop(options) {
+-        var errors = [];
+-        var value = options.value;
+-        var key = options.key;
+-
+-        if (getType(value) !== 'array') {
+-            return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
+-        }
+-
+-        if (value.length !== 2) {
+-            return [new ValidationError(key, value, 'array length %d expected, length %d found', 2, value.length)];
+-        }
+-
+-        var type = getType(value[0]);
+-        if (!stopKeyType) stopKeyType = type;
+-        if (type !== stopKeyType) {
+-            return [new ValidationError(key, value, '%s stop key type must match previous stop key type %s', type, stopKeyType)];
+-        }
+-
+-        if (type === 'object') {
+-            if (value[0].zoom === undefined) {
+-                return [new ValidationError(key, value, 'object stop key must have zoom')];
+-            }
+-            if (value[0].value === undefined) {
+-                return [new ValidationError(key, value, 'object stop key must have value')];
+-            }
+-            errors = errors.concat(validateObject({
+-                key: key + '[0]',
+-                value: value[0],
+-                valueSpec: { zoom: {} },
+-                style: options.style,
+-                styleSpec: options.styleSpec,
+-                objectElementValidators: { zoom: validateNumber, value: validateValue }
+-            }));
+-        } else {
+-            var isZoomFunction = !originalValue.property;
+-            errors = errors.concat((isZoomFunction ? validateNumber : validateValue)({
+-                key: key + '[0]',
+-                value: value[0],
+-                valueSpec: {},
+-                style: options.style,
+-                styleSpec: options.styleSpec
+-            }));
+-        }
+-
+-        errors = errors.concat(validate({
+-            key: key + '[1]',
+-            value: value[1],
+-            valueSpec: originalValueSpec,
+-            style: options.style,
+-            styleSpec: options.styleSpec
+-        }));
++  createLoop(dimension-1, 0)
+ 
+-        if (getType(value[0]) === 'number') {
+-            if (originalValueSpec.function === 'piecewise-constant' && value[0] % 1 !== 0) {
+-                errors.push(new ValidationError(key + '[0]', value[0], 'zoom level for piecewise-constant functions must be an integer'));
+-            }
++  //Release scratch memory
++  code.push("freeUint32(", VERTEX_IDS, ");freeUint32(", PHASES, ");")
+ 
+-            if (options.arrayIndex !== 0) {
+-                if (value[0] < options.array[options.arrayIndex - 1][0]) {
+-                    errors.push(new ValidationError(key + '[0]', value[0], 'array stops must appear in ascending order'));
+-                }
+-            }
+-        }
++  //Compile and link procedure
++  var procedureCode = [
++    "'use strict';",
++    "function ", funcName, "(", args.join(), "){",
++      "var ", vars.join(), ";",
++      code.join(""),
++    "}",
++    "return ", funcName ].join("")
+ 
+-        return errors;
+-    }
++  var proc = new Function(
++    "vertex", 
++    "face", 
++    "phase", 
++    "mallocUint32", 
++    "freeUint32",
++    procedureCode)
++  return proc(
++    vertexFunc, 
++    faceFunc, 
++    phaseFunc, 
++    pool.mallocUint32, 
++    pool.freeUint32)
++}
+ 
+-    function validateValue(options) {
+-        var errors = [];
+-        var type = getType(options.value);
+-        if (type !== 'number' && type !== 'string' && type !== 'array') {
+-            errors.push(new ValidationError(options.key, options.value, 'property value must be a number, string or array'));
+-        }
+-        return errors;
++function createSurfaceExtractor(args) {
++  function error(msg) {
++    throw new Error("ndarray-extract-contour: " + msg)
++  }
++  if(typeof args !== "object") {
++    error("Must specify arguments")
++  }
++  var order = args.order
++  if(!Array.isArray(order)) {
++    error("Must specify order")
++  }
++  var arrays = args.arrayArguments||1
++  if(arrays < 1) {
++    error("Must have at least one array argument")
++  }
++  var scalars = args.scalarArguments||0
++  if(scalars < 0) {
++    error("Scalar arg count must be > 0")
++  }
++  if(typeof args.vertex !== "function") {
++    error("Must specify vertex creation function")
++  }
++  if(typeof args.cell !== "function") {
++    error("Must specify cell creation function")
++  }
++  if(typeof args.phase !== "function") {
++    error("Must specify phase function")
++  }
++  var getters = args.getters || []
++  var typesig = new Array(arrays)
++  for(var i=0; i<arrays; ++i) {
++    if(getters.indexOf(i) >= 0) {
++      typesig[i] = true
++    } else {
++      typesig[i] = false
+     }
++  }
++  return compileSurfaceProcedure(
++    args.vertex,
++    args.cell,
++    args.phase,
++    scalars,
++    order,
++    typesig)
++}
++},{"typedarray-pool":449}],375:[function(require,module,exports){
++"use strict"
+ 
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378,"./validate":380,"./validate_array":381,"./validate_number":391,"./validate_object":392}],388:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var validateString = require('./validate_string');
+ 
+-module.exports = function(options) {
+-    var value = options.value;
+-    var key = options.key;
+ 
+-    var errors = validateString(options);
+-    if (errors.length) return errors;
++var fill = require('cwise/lib/wrapper')({"args":["index","array","scalar"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{_inline_4_arg1_=_inline_4_arg2_.apply(void 0,_inline_4_arg0_)}","args":[{"name":"_inline_4_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_4_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_4_arg2_","lvalue":false,"rvalue":true,"count":1}],"thisVars":[],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
+ 
+-    if (value.indexOf('{fontstack}') === -1) {
+-        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{fontstack}" token'));
+-    }
++module.exports = function(array, f) {
++  fill(array, f)
++  return array
++}
+ 
+-    if (value.indexOf('{range}') === -1) {
+-        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{range}" token'));
+-    }
++},{"cwise/lib/wrapper":89}],376:[function(require,module,exports){
++'use strict'
+ 
+-    return errors;
+-};
++module.exports      = gradient
+ 
+-},{"../error/validation_error":376,"./validate_string":395}],389:[function(require,module,exports){
+-'use strict';
++var dup             = require('dup')
++var cwiseCompiler   = require('cwise-compiler')
+ 
+-var ValidationError = require('../error/validation_error');
+-var unbundle = require('../util/unbundle_jsonlint');
+-var validateObject = require('./validate_object');
+-var validateFilter = require('./validate_filter');
+-var validatePaintProperty = require('./validate_paint_property');
+-var validateLayoutProperty = require('./validate_layout_property');
+-var extend = require('../util/extend');
++var TEMPLATE_CACHE  = {}
++var GRADIENT_CACHE  = {}
+ 
+-module.exports = function validateLayer(options) {
+-    var errors = [];
++var EmptyProc = {
++  body: "",
++  args: [],
++  thisVars: [],
++  localVars: []
++}
+ 
+-    var layer = options.value;
+-    var key = options.key;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
++var centralDiff = cwiseCompiler({
++  args: [ 'array', 'array', 'array' ],
++  pre: EmptyProc,
++  post: EmptyProc,
++  body: {
++    args: [ {
++      name: 'out', 
++      lvalue: true,
++      rvalue: false,
++      count: 1
++    }, {
++      name: 'left', 
++      lvalue: false,
++      rvalue: true,
++      count: 1
++    }, {
++      name: 'right', 
++      lvalue: false,
++      rvalue: true,
++      count: 1
++    }],
++    body: "out=0.5*(left-right)",
++    thisVars: [],
++    localVars: []
++  },
++  funcName: 'cdiff'
++})
+ 
+-    if (!layer.type && !layer.ref) {
+-        errors.push(new ValidationError(key, layer, 'either "type" or "ref" is required'));
+-    }
+-    var type = unbundle(layer.type);
+-    var ref = unbundle(layer.ref);
++var zeroOut = cwiseCompiler({
++  args: [ 'array' ],
++  pre: EmptyProc,
++  post: EmptyProc,
++  body: {
++    args: [ {
++      name: 'out', 
++      lvalue: true,
++      rvalue: false,
++      count: 1
++    }],
++    body: "out=0",
++    thisVars: [],
++    localVars: []
++  },
++  funcName: 'zero'
++})
+ 
+-    if (layer.id) {
+-        for (var i = 0; i < options.arrayIndex; i++) {
+-            var otherLayer = style.layers[i];
+-            if (unbundle(otherLayer.id) === unbundle(layer.id)) {
+-                errors.push(new ValidationError(key, layer.id, 'duplicate layer id "%s", previously used at line %d', layer.id, otherLayer.id.__line__));
+-            }
++function generateTemplate(d) {
++  if(d in TEMPLATE_CACHE) {
++    return TEMPLATE_CACHE[d]
++  }
++  var code = []
++  for(var i=0; i<d; ++i) {
++    code.push('out', i, 's=0.5*(inp', i, 'l-inp', i, 'r);')
++  }
++  var args = [ 'array' ]
++  var names = ['junk']
++  for(var i=0; i<d; ++i) {
++    args.push('array')
++    names.push('out' + i + 's')
++    var o = dup(d)
++    o[i] = -1
++    args.push({
++      array: 0,
++      offset: o.slice()
++    })
++    o[i] = 1
++    args.push({
++      array: 0,
++      offset: o.slice()
++    })
++    names.push('inp' + i + 'l', 'inp' + i + 'r')
++  }
++  return TEMPLATE_CACHE[d] = cwiseCompiler({
++    args: args,
++    pre:  EmptyProc,
++    post: EmptyProc,
++    body: {
++      body: code.join(''),
++      args: names.map(function(n) {
++        return {
++          name: n,
++          lvalue: n.indexOf('out') === 0,
++          rvalue: n.indexOf('inp') === 0,
++          count: (n!=='junk')|0
+         }
+-    }
+-
+-    if ('ref' in layer) {
+-        ['type', 'source', 'source-layer', 'filter', 'layout'].forEach(function (p) {
+-            if (p in layer) {
+-                errors.push(new ValidationError(key, layer[p], '"%s" is prohibited for ref layers', p));
+-            }
+-        });
++      }),
++      thisVars: [],
++      localVars: []
++    },
++    funcName: 'fdTemplate' + d
++  })
++}
+ 
+-        var parent;
++function generateGradient(boundaryConditions) {
++  var token = boundaryConditions.join()
++  var proc = GRADIENT_CACHE[token]
++  if(proc) {
++    return proc
++  }
+ 
+-        style.layers.forEach(function(layer) {
+-            if (layer.id == ref) parent = layer;
+-        });
++  var d = boundaryConditions.length
++  var code = ['function gradient(dst,src){var s=src.shape.slice();' ]
++  
++  function handleBoundary(facet) {
++    var cod = d - facet.length
+ 
+-        if (!parent) {
+-            errors.push(new ValidationError(key, layer.ref, 'ref layer "%s" not found', ref));
+-        } else if (parent.ref) {
+-            errors.push(new ValidationError(key, layer.ref, 'ref cannot reference another ref layer'));
+-        } else {
+-            type = unbundle(parent.type);
++    var loStr = []
++    var hiStr = []
++    var pickStr = []
++    for(var i=0; i<d; ++i) {
++      if(facet.indexOf(i+1) >= 0) {
++        pickStr.push('0')
++      } else if(facet.indexOf(-(i+1)) >= 0) {
++        pickStr.push('s['+i+']-1')
++      } else {
++        pickStr.push('-1')
++        loStr.push('1')
++        hiStr.push('s['+i+']-2')
++      }
++    }
++    var boundStr = '.lo(' + loStr.join() + ').hi(' + hiStr.join() + ')'
++    if(loStr.length === 0) {
++      boundStr = ''
++    }
++        
++    if(cod > 0) {
++      code.push('if(1') 
++      for(var i=0; i<d; ++i) {
++        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
++          continue
+         }
+-    } else if (type !== 'background') {
+-        if (!layer.source) {
+-            errors.push(new ValidationError(key, layer, 'missing required property "source"'));
+-        } else {
+-            var source = style.sources[layer.source];
+-            if (!source) {
+-                errors.push(new ValidationError(key, layer.source, 'source "%s" not found', layer.source));
+-            } else if (source.type == 'vector' && type == 'raster') {
+-                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a raster source', layer.id));
+-            } else if (source.type == 'raster' && type != 'raster') {
+-                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a vector source', layer.id));
+-            } else if (source.type == 'vector' && !layer['source-layer']) {
+-                errors.push(new ValidationError(key, layer, 'layer "%s" must specify a "source-layer"', layer.id));
+-            }
++        code.push('&&s[', i, ']>2')
++      }
++      code.push('){grad', cod, '(src.pick(', pickStr.join(), ')', boundStr)
++      for(var i=0; i<d; ++i) {
++        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
++          continue
+         }
++        code.push(',dst.pick(', pickStr.join(), ',', i, ')', boundStr)
++      }
++      code.push(');')
+     }
+ 
+-    errors = errors.concat(validateObject({
+-        key: key,
+-        value: layer,
+-        valueSpec: styleSpec.layer,
+-        style: options.style,
+-        styleSpec: options.styleSpec,
+-        objectElementValidators: {
+-            filter: validateFilter,
+-            layout: function(options) {
+-                return validateObject({
+-                    layer: layer,
+-                    key: options.key,
+-                    value: options.value,
+-                    style: options.style,
+-                    styleSpec: options.styleSpec,
+-                    objectElementValidators: {
+-                        '*': function(options) {
+-                            return validateLayoutProperty(extend({layerType: type}, options));
+-                        }
+-                    }
+-                });
+-            },
+-            paint: function(options) {
+-                return validateObject({
+-                    layer: layer,
+-                    key: options.key,
+-                    value: options.value,
+-                    style: options.style,
+-                    styleSpec: options.styleSpec,
+-                    objectElementValidators: {
+-                        '*': function(options) {
+-                            return validatePaintProperty(extend({layerType: type}, options));
+-                        }
+-                    }
+-                });
+-            }
+-        }
+-    }));
++    for(var i=0; i<facet.length; ++i) {
++      var bnd = Math.abs(facet[i])-1
++      var outStr = 'dst.pick(' + pickStr.join() + ',' + bnd + ')' + boundStr
++      switch(boundaryConditions[bnd]) {
+ 
+-    return errors;
+-};
++        case 'clamp':
++          var cPickStr = pickStr.slice()
++          var dPickStr = pickStr.slice()
++          if(facet[i] < 0) {
++            cPickStr[bnd] = 's[' + bnd + ']-2'
++          } else {
++            dPickStr[bnd] = '1'
++          }
++          if(cod === 0) {
++            code.push('if(s[', bnd, ']>1){dst.set(',
++              pickStr.join(), ',', bnd, ',0.5*(src.get(',
++                cPickStr.join(), ')-src.get(',
++                dPickStr.join(), ')))}else{dst.set(',
++              pickStr.join(), ',', bnd, ',0)};')
++          } else {
++            code.push('if(s[', bnd, ']>1){diff(', outStr, 
++                ',src.pick(', cPickStr.join(), ')', boundStr, 
++                ',src.pick(', dPickStr.join(), ')', boundStr, 
++                ');}else{zero(', outStr, ');};')
++          }
++        break
+ 
+-},{"../error/validation_error":376,"../util/extend":377,"../util/unbundle_jsonlint":379,"./validate_filter":386,"./validate_layout_property":390,"./validate_object":392,"./validate_paint_property":393}],390:[function(require,module,exports){
+-'use strict';
++        case 'mirror':
++          if(cod === 0) {
++            code.push('dst.set(', pickStr.join(), ',', bnd, ',0);')
++          } else {
++            code.push('zero(', outStr, ');')
++          }
++        break
+ 
+-var validate = require('./validate');
+-var ValidationError = require('../error/validation_error');
++        case 'wrap':
++          var aPickStr = pickStr.slice()
++          var bPickStr = pickStr.slice()
++          if(facet[i] < 0) {
++            aPickStr[bnd] = 's[' + bnd + ']-2'
++            bPickStr[bnd] = '0'
++            
++          } else {
++            aPickStr[bnd] = 's[' + bnd + ']-1'
++            bPickStr[bnd] = '1'
++          }
++          if(cod === 0) {
++            code.push('if(s[', bnd, ']>2){dst.set(',
++              pickStr.join(), ',', bnd, ',0.5*(src.get(',
++                aPickStr.join(), ')-src.get(',
++                bPickStr.join(), ')))}else{dst.set(',
++              pickStr.join(), ',', bnd, ',0)};')
++          } else {
++            code.push('if(s[', bnd, ']>2){diff(', outStr, 
++                ',src.pick(', aPickStr.join(), ')', boundStr, 
++                ',src.pick(', bPickStr.join(), ')', boundStr, 
++                ');}else{zero(', outStr, ');};')
++          }
++        break
+ 
+-module.exports = function validateLayoutProperty(options) {
+-    var key = options.key;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var value = options.value;
+-    var propertyKey = options.objectKey;
+-    var layerSpec = styleSpec['layout_' + options.layerType];
++        default:
++          throw new Error('ndarray-gradient: Invalid boundary condition')
++      }
++    }
+ 
+-    if (options.valueSpec || layerSpec[propertyKey]) {
+-        var errors = [];
++    if(cod > 0) {
++      code.push('};')
++    }
++  }
+ 
+-        if (options.layerType === 'symbol') {
+-            if (propertyKey === 'icon-image' && style && !style.sprite) {
+-                errors.push(new ValidationError(key, value, 'use of "icon-image" requires a style "sprite" property'));
+-            } else if (propertyKey === 'text-field' && style && !style.glyphs) {
+-                errors.push(new ValidationError(key, value, 'use of "text-field" requires a style "glyphs" property'));
+-            }
++  //Enumerate ridges, facets, etc. of hypercube
++  for(var i=0; i<(1<<d); ++i) {
++    var faces = []
++    for(var j=0; j<d; ++j) {
++      if(i & (1<<j)) {
++        faces.push(j+1)
++      }
++    }
++    for(var k=0; k<(1<<faces.length); ++k) {
++      var sfaces = faces.slice()
++      for(var j=0; j<faces.length; ++j) {
++        if(k & (1<<j)) {
++          sfaces[j] = -sfaces[j]
+         }
++      }
++      handleBoundary(sfaces)
++    }
++  }
+ 
+-        return errors.concat(validate({
+-            key: options.key,
+-            value: value,
+-            valueSpec: options.valueSpec || layerSpec[propertyKey],
+-            style: style,
+-            styleSpec: styleSpec
+-        }));
++  code.push('return dst;};return gradient')
+ 
+-    } else {
+-        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
+-    }
++  //Compile and link routine, save cached procedure
++  var linkNames = [ 'diff', 'zero' ]
++  var linkArgs  = [ centralDiff, zeroOut ]
++  for(var i=1; i<=d; ++i) {
++    linkNames.push('grad' + i)
++    linkArgs.push(generateTemplate(i))
++  }
++  linkNames.push(code.join(''))
+ 
+-};
++  var link = Function.apply(void 0, linkNames)
++  var proc = link.apply(void 0, linkArgs)
++  TEMPLATE_CACHE[token] = proc
++  return proc
++}
+ 
+-},{"../error/validation_error":376,"./validate":380}],391:[function(require,module,exports){
+-'use strict';
++function gradient(out, inp, bc) {
++  if(Array.isArray(bc)) {
++    if(bc.length !== inp.dimension) {
++      throw new Error('ndarray-gradient: invalid boundary conditions')
++    }
++  } else if(typeof bc === 'string') {
++    bc = dup(inp.dimension, bc)
++  } else {
++    bc = dup(inp.dimension, 'clamp')
++  }
++  if(out.dimension !== inp.dimension + 1) {
++    throw new Error('ndarray-gradient: output dimension must be +1 input dimension')
++  }
++  if(out.shape[inp.dimension] !== inp.dimension) {
++    throw new Error('ndarray-gradient: output shape must match input shape')
++  }
++  for(var i=0; i<inp.dimension; ++i) {
++    if(out.shape[i] !== inp.shape[i]) {
++      throw new Error('ndarray-gradient: shape mismatch')
++    }
++  }
++  if(inp.size === 0) {
++    return out
++  }
++  if(inp.dimension <= 0) {
++    out.set(0)
++    return out
++  }
++  var cached = generateGradient(bc)
++  return cached(out, inp)
++}
++},{"cwise-compiler":86,"dup":93}],377:[function(require,module,exports){
++'use strict'
+ 
+-var getType = require('../util/get_type');
+-var ValidationError = require('../error/validation_error');
++var warp = require('ndarray-warp')
++var invert = require('gl-matrix-invert')
+ 
+-module.exports = function validateNumber(options) {
+-    var key = options.key;
+-    var value = options.value;
+-    var valueSpec = options.valueSpec;
+-    var type = getType(value);
++module.exports = applyHomography
+ 
+-    if (type !== 'number') {
+-        return [new ValidationError(key, value, 'number expected, %s found', type)];
++function applyHomography(dest, src, Xi) {
++  var n = src.dimension
++  var X = invert([], Xi)
++  warp(dest, src, function(out_c, inp_c) {
++    for(var i=0; i<n; ++i) {
++      out_c[i] = X[(n+1)*n + i]
++      for(var j=0; j<n; ++j) {
++        out_c[i] += X[(n+1)*j+i] * inp_c[j]
++      }
+     }
+-
+-    if ('minimum' in valueSpec && value < valueSpec.minimum) {
+-        return [new ValidationError(key, value, '%s is less than the minimum value %s', value, valueSpec.minimum)];
++    var w = X[(n+1)*(n+1)-1]
++    for(var j=0; j<n; ++j) {
++      w += X[(n+1)*j+n] * inp_c[j]
++    }
++    var wr = 1.0 / w
++    for(var i=0; i<n; ++i) {
++      out_c[i] *= wr
+     }
++    return out_c
++  })
++  return dest
++}
++},{"gl-matrix-invert":153,"ndarray-warp":384}],378:[function(require,module,exports){
++"use strict"
+ 
+-    if ('maximum' in valueSpec && value > valueSpec.maximum) {
+-        return [new ValidationError(key, value, '%s is greater than the maximum value %s', value, valueSpec.maximum)];
++function interp1d(arr, x) {
++  var ix = Math.floor(x)
++    , fx = x - ix
++    , s0 = 0 <= ix   && ix   < arr.shape[0]
++    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
++    , w0 = s0 ? +arr.get(ix)   : 0.0
++    , w1 = s1 ? +arr.get(ix+1) : 0.0
++  return (1.0-fx)*w0 + fx*w1
++}
++
++function interp2d(arr, x, y) {
++  var ix = Math.floor(x)
++    , fx = x - ix
++    , s0 = 0 <= ix   && ix   < arr.shape[0]
++    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
++    , iy = Math.floor(y)
++    , fy = y - iy
++    , t0 = 0 <= iy   && iy   < arr.shape[1]
++    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
++    , w00 = s0&&t0 ? arr.get(ix  ,iy  ) : 0.0
++    , w01 = s0&&t1 ? arr.get(ix  ,iy+1) : 0.0
++    , w10 = s1&&t0 ? arr.get(ix+1,iy  ) : 0.0
++    , w11 = s1&&t1 ? arr.get(ix+1,iy+1) : 0.0
++  return (1.0-fy) * ((1.0-fx)*w00 + fx*w10) + fy * ((1.0-fx)*w01 + fx*w11)
++}
++
++function interp3d(arr, x, y, z) {
++  var ix = Math.floor(x)
++    , fx = x - ix
++    , s0 = 0 <= ix   && ix   < arr.shape[0]
++    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
++    , iy = Math.floor(y)
++    , fy = y - iy
++    , t0 = 0 <= iy   && iy   < arr.shape[1]
++    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
++    , iz = Math.floor(z)
++    , fz = z - iz
++    , u0 = 0 <= iz   && iz   < arr.shape[2]
++    , u1 = 0 <= iz+1 && iz+1 < arr.shape[2]
++    , w000 = s0&&t0&&u0 ? arr.get(ix,iy,iz)       : 0.0
++    , w010 = s0&&t1&&u0 ? arr.get(ix,iy+1,iz)     : 0.0
++    , w100 = s1&&t0&&u0 ? arr.get(ix+1,iy,iz)     : 0.0
++    , w110 = s1&&t1&&u0 ? arr.get(ix+1,iy+1,iz)   : 0.0
++    , w001 = s0&&t0&&u1 ? arr.get(ix,iy,iz+1)     : 0.0
++    , w011 = s0&&t1&&u1 ? arr.get(ix,iy+1,iz+1)   : 0.0
++    , w101 = s1&&t0&&u1 ? arr.get(ix+1,iy,iz+1)   : 0.0
++    , w111 = s1&&t1&&u1 ? arr.get(ix+1,iy+1,iz+1) : 0.0
++  return (1.0-fz) * ((1.0-fy) * ((1.0-fx)*w000 + fx*w100) + fy * ((1.0-fx)*w010 + fx*w110)) + fz * ((1.0-fy) * ((1.0-fx)*w001 + fx*w101) + fy * ((1.0-fx)*w011 + fx*w111))
++}
++
++function interpNd(arr) {
++  var d = arr.shape.length|0
++    , ix = new Array(d)
++    , fx = new Array(d)
++    , s0 = new Array(d)
++    , s1 = new Array(d)
++    , i, t
++  for(i=0; i<d; ++i) {
++    t = +arguments[i+1]
++    ix[i] = Math.floor(t)
++    fx[i] = t - ix[i]
++    s0[i] = (0 <= ix[i]   && ix[i]   < arr.shape[i])
++    s1[i] = (0 <= ix[i]+1 && ix[i]+1 < arr.shape[i])
++  }
++  var r = 0.0, j, w, idx
++i_loop:
++  for(i=0; i<(1<<d); ++i) {
++    w = 1.0
++    idx = arr.offset
++    for(j=0; j<d; ++j) {
++      if(i & (1<<j)) {
++        if(!s1[j]) {
++          continue i_loop
++        }
++        w *= fx[j]
++        idx += arr.stride[j] * (ix[j] + 1)
++      } else {
++        if(!s0[j]) {
++          continue i_loop
++        }
++        w *= 1.0 - fx[j]
++        idx += arr.stride[j] * ix[j]
++      }
+     }
++    r += w * arr.data[idx]
++  }
++  return r
++}
+ 
+-    return [];
+-};
++function interpolate(arr, x, y, z) {
++  switch(arr.shape.length) {
++    case 0:
++      return 0.0
++    case 1:
++      return interp1d(arr, x)
++    case 2:
++      return interp2d(arr, x, y)
++    case 3:
++      return interp3d(arr, x, y, z)
++    default:
++      return interpNd.apply(undefined, arguments)
++  }
++}
++module.exports = interpolate
++module.exports.d1 = interp1d
++module.exports.d2 = interp2d
++module.exports.d3 = interp3d
+ 
+-},{"../error/validation_error":376,"../util/get_type":378}],392:[function(require,module,exports){
+-'use strict';
++},{}],379:[function(require,module,exports){
++"use strict"
+ 
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var validate = require('./validate');
++var compile = require("cwise-compiler")
+ 
+-module.exports = function validateObject(options) {
+-    var key = options.key;
+-    var object = options.value;
+-    var valueSpec = options.valueSpec;
+-    var objectElementValidators = options.objectElementValidators || {};
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var errors = [];
++var EmptyProc = {
++  body: "",
++  args: [],
++  thisVars: [],
++  localVars: []
++}
+ 
+-    var type = getType(object);
+-    if (type !== 'object') {
+-        return [new ValidationError(key, object, 'object expected, %s found', type)];
++function fixup(x) {
++  if(!x) {
++    return EmptyProc
++  }
++  for(var i=0; i<x.args.length; ++i) {
++    var a = x.args[i]
++    if(i === 0) {
++      x.args[i] = {name: a, lvalue:true, rvalue: !!x.rvalue, count:x.count||1 }
++    } else {
++      x.args[i] = {name: a, lvalue:false, rvalue:true, count: 1}
+     }
++  }
++  if(!x.thisVars) {
++    x.thisVars = []
++  }
++  if(!x.localVars) {
++    x.localVars = []
++  }
++  return x
++}
+ 
+-    for (var objectKey in object) {
+-        var valueSpecKey = objectKey.split('.')[0]; // treat 'paint.*' as 'paint'
+-        var objectElementSpec = valueSpec && (valueSpec[valueSpecKey] || valueSpec['*']);
+-        var objectElementValidator = objectElementValidators[valueSpecKey] || objectElementValidators['*'];
+-
+-        if (objectElementSpec || objectElementValidator) {
+-            errors = errors.concat((objectElementValidator || validate)({
+-                key: (key ? key + '.' : key) + objectKey,
+-                value: object[objectKey],
+-                valueSpec: objectElementSpec,
+-                style: style,
+-                styleSpec: styleSpec,
+-                object: object,
+-                objectKey: objectKey
+-            }));
+-
+-        // tolerate root-level extra keys & arbitrary layer properties
+-        // TODO remove this layer-specific logic
+-        } else if (key !== '' && key.split('.').length !== 1) {
+-            errors.push(new ValidationError(key, object[objectKey], 'unknown property "%s"', objectKey));
+-        }
+-    }
++function pcompile(user_args) {
++  return compile({
++    args:     user_args.args,
++    pre:      fixup(user_args.pre),
++    body:     fixup(user_args.body),
++    post:     fixup(user_args.proc),
++    funcName: user_args.funcName
++  })
++}
+ 
+-    for (valueSpecKey in valueSpec) {
+-        if (valueSpec[valueSpecKey].required && valueSpec[valueSpecKey]['default'] === undefined && object[valueSpecKey] === undefined) {
+-            errors.push(new ValidationError(key, object, 'missing required property "%s"', valueSpecKey));
+-        }
+-    }
++function makeOp(user_args) {
++  var args = []
++  for(var i=0; i<user_args.args.length; ++i) {
++    args.push("a"+i)
++  }
++  var wrapper = new Function("P", [
++    "return function ", user_args.funcName, "_ndarrayops(", args.join(","), ") {P(", args.join(","), ");return a0}"
++  ].join(""))
++  return wrapper(pcompile(user_args))
++}
+ 
+-    return errors;
+-};
++var assign_ops = {
++  add:  "+",
++  sub:  "-",
++  mul:  "*",
++  div:  "/",
++  mod:  "%",
++  band: "&",
++  bor:  "|",
++  bxor: "^",
++  lshift: "<<",
++  rshift: ">>",
++  rrshift: ">>>"
++}
++;(function(){
++  for(var id in assign_ops) {
++    var op = assign_ops[id]
++    exports[id] = makeOp({
++      args: ["array","array","array"],
++      body: {args:["a","b","c"],
++             body: "a=b"+op+"c"},
++      funcName: id
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array","array"],
++      body: {args:["a","b"],
++             body:"a"+op+"=b"},
++      rvalue: true,
++      funcName: id+"eq"
++    })
++    exports[id+"s"] = makeOp({
++      args: ["array", "array", "scalar"],
++      body: {args:["a","b","s"],
++             body:"a=b"+op+"s"},
++      funcName: id+"s"
++    })
++    exports[id+"seq"] = makeOp({
++      args: ["array","scalar"],
++      body: {args:["a","s"],
++             body:"a"+op+"=s"},
++      rvalue: true,
++      funcName: id+"seq"
++    })
++  }
++})();
+ 
+-},{"../error/validation_error":376,"../util/get_type":378,"./validate":380}],393:[function(require,module,exports){
+-'use strict';
++var unary_ops = {
++  not: "!",
++  bnot: "~",
++  neg: "-",
++  recip: "1.0/"
++}
++;(function(){
++  for(var id in unary_ops) {
++    var op = unary_ops[id]
++    exports[id] = makeOp({
++      args: ["array", "array"],
++      body: {args:["a","b"],
++             body:"a="+op+"b"},
++      funcName: id
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array"],
++      body: {args:["a"],
++             body:"a="+op+"a"},
++      rvalue: true,
++      count: 2,
++      funcName: id+"eq"
++    })
++  }
++})();
+ 
+-var validate = require('./validate');
+-var ValidationError = require('../error/validation_error');
++var binary_ops = {
++  and: "&&",
++  or: "||",
++  eq: "===",
++  neq: "!==",
++  lt: "<",
++  gt: ">",
++  leq: "<=",
++  geq: ">="
++}
++;(function() {
++  for(var id in binary_ops) {
++    var op = binary_ops[id]
++    exports[id] = makeOp({
++      args: ["array","array","array"],
++      body: {args:["a", "b", "c"],
++             body:"a=b"+op+"c"},
++      funcName: id
++    })
++    exports[id+"s"] = makeOp({
++      args: ["array","array","scalar"],
++      body: {args:["a", "b", "s"],
++             body:"a=b"+op+"s"},
++      funcName: id+"s"
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array", "array"],
++      body: {args:["a", "b"],
++             body:"a=a"+op+"b"},
++      rvalue:true,
++      count:2,
++      funcName: id+"eq"
++    })
++    exports[id+"seq"] = makeOp({
++      args: ["array", "scalar"],
++      body: {args:["a","s"],
++             body:"a=a"+op+"s"},
++      rvalue:true,
++      count:2,
++      funcName: id+"seq"
++    })
++  }
++})();
+ 
+-module.exports = function validatePaintProperty(options) {
+-    var key = options.key;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var value = options.value;
+-    var propertyKey = options.objectKey;
+-    var layerSpec = styleSpec['paint_' + options.layerType];
++var math_unary = [
++  "abs",
++  "acos",
++  "asin",
++  "atan",
++  "ceil",
++  "cos",
++  "exp",
++  "floor",
++  "log",
++  "round",
++  "sin",
++  "sqrt",
++  "tan"
++]
++;(function() {
++  for(var i=0; i<math_unary.length; ++i) {
++    var f = math_unary[i]
++    exports[f] = makeOp({
++                    args: ["array", "array"],
++                    pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                    body: {args:["a","b"], body:"a=this_f(b)", thisVars:["this_f"]},
++                    funcName: f
++                  })
++    exports[f+"eq"] = makeOp({
++                      args: ["array"],
++                      pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                      body: {args: ["a"], body:"a=this_f(a)", thisVars:["this_f"]},
++                      rvalue: true,
++                      count: 2,
++                      funcName: f+"eq"
++                    })
++  }
++})();
+ 
+-    var transitionMatch = propertyKey.match(/^(.*)-transition$/);
++var math_comm = [
++  "max",
++  "min",
++  "atan2",
++  "pow"
++]
++;(function(){
++  for(var i=0; i<math_comm.length; ++i) {
++    var f= math_comm[i]
++    exports[f] = makeOp({
++                  args:["array", "array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
++                  funcName: f
++                })
++    exports[f+"s"] = makeOp({
++                  args:["array", "array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
++                  funcName: f+"s"
++                  })
++    exports[f+"eq"] = makeOp({ args:["array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
++                  rvalue: true,
++                  count: 2,
++                  funcName: f+"eq"
++                  })
++    exports[f+"seq"] = makeOp({ args:["array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
++                  rvalue:true,
++                  count:2,
++                  funcName: f+"seq"
++                  })
++  }
++})();
+ 
+-    if (transitionMatch && layerSpec[transitionMatch[1]] && layerSpec[transitionMatch[1]].transition) {
+-        return validate({
+-            key: key,
+-            value: value,
+-            valueSpec: styleSpec.transition,
+-            style: style,
+-            styleSpec: styleSpec
+-        });
++var math_noncomm = [
++  "atan2",
++  "pow"
++]
++;(function(){
++  for(var i=0; i<math_noncomm.length; ++i) {
++    var f= math_noncomm[i]
++    exports[f+"op"] = makeOp({
++                  args:["array", "array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
++                  funcName: f+"op"
++                })
++    exports[f+"ops"] = makeOp({
++                  args:["array", "array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
++                  funcName: f+"ops"
++                  })
++    exports[f+"opeq"] = makeOp({ args:["array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
++                  rvalue: true,
++                  count: 2,
++                  funcName: f+"opeq"
++                  })
++    exports[f+"opseq"] = makeOp({ args:["array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
++                  rvalue:true,
++                  count:2,
++                  funcName: f+"opseq"
++                  })
++  }
++})();
+ 
+-    } else if (options.valueSpec || layerSpec[propertyKey]) {
+-        return validate({
+-            key: options.key,
+-            value: value,
+-            valueSpec: options.valueSpec || layerSpec[propertyKey],
+-            style: style,
+-            styleSpec: styleSpec
+-        });
++exports.any = compile({
++  args:["array"],
++  pre: EmptyProc,
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "if(a){return true}", localVars: [], thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return false"},
++  funcName: "any"
++})
+ 
+-    } else {
+-        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
+-    }
++exports.all = compile({
++  args:["array"],
++  pre: EmptyProc,
++  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1}], body: "if(!x){return false}", localVars: [], thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return true"},
++  funcName: "all"
++})
+ 
+-};
++exports.sum = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s+=a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "sum"
++})
+ 
+-},{"../error/validation_error":376,"./validate":380}],394:[function(require,module,exports){
+-'use strict';
++exports.prod = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=1"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s*=a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "prod"
++})
+ 
+-var ValidationError = require('../error/validation_error');
+-var unbundle = require('../util/unbundle_jsonlint');
+-var validateObject = require('./validate_object');
+-var validateEnum = require('./validate_enum');
++exports.norm2squared = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norm2squared"
++})
++  
++exports.norm2 = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return Math.sqrt(this_s)"},
++  funcName: "norm2"
++})
++  
+ 
+-module.exports = function validateSource(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var styleSpec = options.styleSpec;
+-    var style = options.style;
++exports.norminf = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:4}], body:"if(-a>this_s){this_s=-a}else if(a>this_s){this_s=a}", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norminf"
++})
+ 
+-    if (!value.type) {
+-        return [new ValidationError(key, value, '"type" is required')];
+-    }
++exports.norm1 = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:3}], body: "this_s+=a<0?-a:a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norm1"
++})
+ 
+-    var type = unbundle(value.type);
+-    switch (type) {
+-        case 'vector':
+-        case 'raster':
+-            var errors = [];
+-            errors = errors.concat(validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_tile,
+-                style: options.style,
+-                styleSpec: styleSpec
+-            }));
+-            if ('url' in value) {
+-                for (var prop in value) {
+-                    if (['type', 'url', 'tileSize'].indexOf(prop) < 0) {
+-                        errors.push(new ValidationError(key + '.' + prop, value[prop], 'a source with a "url" property may not include a "%s" property', prop));
+-                    }
+-                }
+-            }
+-            return errors;
++exports.sup = compile({
++  args: [ "array" ],
++  pre:
++   { body: "this_h=-Infinity",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  body:
++   { body: "if(_inline_1_arg0_>this_h)this_h=_inline_1_arg0_",
++     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  post:
++   { body: "return this_h",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] }
++ })
+ 
+-        case 'geojson':
+-            return validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_geojson,
+-                style: style,
+-                styleSpec: styleSpec
+-            });
++exports.inf = compile({
++  args: [ "array" ],
++  pre:
++   { body: "this_h=Infinity",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  body:
++   { body: "if(_inline_1_arg0_<this_h)this_h=_inline_1_arg0_",
++     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  post:
++   { body: "return this_h",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] }
++ })
+ 
+-        case 'video':
+-            return validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_video,
+-                style: style,
+-                styleSpec: styleSpec
+-            });
++exports.argmin = compile({
++  args:["index","array","shape"],
++  pre:{
++    body:"{this_v=Infinity;this_i=_inline_0_arg2_.slice(0)}",
++    args:[
++      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
++      ],
++    thisVars:["this_i","this_v"],
++    localVars:[]},
++  body:{
++    body:"{if(_inline_1_arg1_<this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
++    args:[
++      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
++      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
++    thisVars:["this_i","this_v"],
++    localVars:["_inline_1_k"]},
++  post:{
++    body:"{return this_i}",
++    args:[],
++    thisVars:["this_i"],
++    localVars:[]}
++})
+ 
+-        case 'image':
+-            return validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_image,
+-                style: style,
+-                styleSpec: styleSpec
+-            });
++exports.argmax = compile({
++  args:["index","array","shape"],
++  pre:{
++    body:"{this_v=-Infinity;this_i=_inline_0_arg2_.slice(0)}",
++    args:[
++      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
++      ],
++    thisVars:["this_i","this_v"],
++    localVars:[]},
++  body:{
++    body:"{if(_inline_1_arg1_>this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
++    args:[
++      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
++      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
++    thisVars:["this_i","this_v"],
++    localVars:["_inline_1_k"]},
++  post:{
++    body:"{return this_i}",
++    args:[],
++    thisVars:["this_i"],
++    localVars:[]}
++})  
+ 
+-        default:
+-            return validateEnum({
+-                key: key + '.type',
+-                value: value.type,
+-                valueSpec: {values: ['vector', 'raster', 'geojson', 'video', 'image']},
+-                style: style,
+-                styleSpec: styleSpec
+-            });
+-    }
+-};
++exports.random = makeOp({
++  args: ["array"],
++  pre: {args:[], body:"this_f=Math.random", thisVars:["this_f"]},
++  body: {args: ["a"], body:"a=this_f()", thisVars:["this_f"]},
++  funcName: "random"
++})
+ 
+-},{"../error/validation_error":376,"../util/unbundle_jsonlint":379,"./validate_enum":385,"./validate_object":392}],395:[function(require,module,exports){
+-'use strict';
++exports.assign = makeOp({
++  args:["array", "array"],
++  body: {args:["a", "b"], body:"a=b"},
++  funcName: "assign" })
+ 
+-var getType = require('../util/get_type');
+-var ValidationError = require('../error/validation_error');
++exports.assigns = makeOp({
++  args:["array", "scalar"],
++  body: {args:["a", "b"], body:"a=b"},
++  funcName: "assigns" })
+ 
+-module.exports = function validateString(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var type = getType(value);
+ 
+-    if (type !== 'string') {
+-        return [new ValidationError(key, value, 'string expected, %s found', type)];
+-    }
++exports.equals = compile({
++  args:["array", "array"],
++  pre: EmptyProc,
++  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1},
++               {name:"y", lvalue:false, rvalue:true, count:1}], 
++        body: "if(x!==y){return false}", 
++        localVars: [], 
++        thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return true"},
++  funcName: "equals"
++})
+ 
+-    return [];
+-};
+ 
+-},{"../error/validation_error":376,"../util/get_type":378}],396:[function(require,module,exports){
+-'use strict';
+ 
+-var validateConstants = require('./validate/validate_constants');
+-var validate = require('./validate/validate');
+-var latestStyleSpec = require('../reference/latest.min');
+-var validateGlyphsURL = require('./validate/validate_glyphs_url');
++},{"cwise-compiler":86}],380:[function(require,module,exports){
++"use strict"
+ 
+-/**
+- * Validate a Mapbox GL style against the style specification. This entrypoint,
+- * `mapbox-gl-style-spec/lib/validate_style.min`, is designed to produce as
+- * small a browserify bundle as possible by omitting unnecessary functionality
+- * and legacy style specifications.
+- *
+- * @param {Object} style The style to be validated.
+- * @param {Object} [styleSpec] The style specification to validate against.
+- *     If omitted, the latest style spec is used.
+- * @returns {Array<ValidationError>}
+- * @example
+- *   var validate = require('mapbox-gl-style-spec/lib/validate_style.min');
+- *   var errors = validate(style);
+- */
+-function validateStyleMin(style, styleSpec) {
+-    styleSpec = styleSpec || latestStyleSpec;
++var ndarray = require("ndarray")
++var do_convert = require("./doConvert.js")
+ 
+-    var errors = [];
++module.exports = function convert(arr, result) {
++  var shape = [], c = arr, sz = 1
++  while(Array.isArray(c)) {
++    shape.push(c.length)
++    sz *= c.length
++    c = c[0]
++  }
++  if(shape.length === 0) {
++    return ndarray()
++  }
++  if(!result) {
++    result = ndarray(new Float64Array(sz), shape)
++  }
++  do_convert(result, arr)
++  return result
++}
+ 
+-    errors = errors.concat(validate({
+-        key: '',
+-        value: style,
+-        valueSpec: styleSpec.$root,
+-        styleSpec: styleSpec,
+-        style: style,
+-        objectElementValidators: {
+-            glyphs: validateGlyphsURL
+-        }
+-    }));
++},{"./doConvert.js":381,"ndarray":385}],381:[function(require,module,exports){
++module.exports=require('cwise-compiler')({"args":["array","scalar","index"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{\nvar _inline_1_v=_inline_1_arg1_,_inline_1_i\nfor(_inline_1_i=0;_inline_1_i<_inline_1_arg2_.length-1;++_inline_1_i) {\n_inline_1_v=_inline_1_v[_inline_1_arg2_[_inline_1_i]]\n}\n_inline_1_arg0_=_inline_1_v[_inline_1_arg2_[_inline_1_arg2_.length-1]]\n}","args":[{"name":"_inline_1_arg0_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_1_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_1_arg2_","lvalue":false,"rvalue":true,"count":4}],"thisVars":[],"localVars":["_inline_1_i","_inline_1_v"]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"funcName":"convert","blockSize":64})
+ 
+-    if (styleSpec.$version > 7 && style.constants) {
+-        errors = errors.concat(validateConstants({
+-            key: 'constants',
+-            value: style.constants,
+-            style: style,
+-            styleSpec: styleSpec
+-        }));
+-    }
++},{"cwise-compiler":86}],382:[function(require,module,exports){
++"use strict"
+ 
+-    return sortErrors(errors);
+-}
++var pool = require("typedarray-pool")
+ 
+-validateStyleMin.source = wrapCleanErrors(require('./validate/validate_source'));
+-validateStyleMin.layer = wrapCleanErrors(require('./validate/validate_layer'));
+-validateStyleMin.filter = wrapCleanErrors(require('./validate/validate_filter'));
+-validateStyleMin.paintProperty = wrapCleanErrors(require('./validate/validate_paint_property'));
+-validateStyleMin.layoutProperty = wrapCleanErrors(require('./validate/validate_layout_property'));
++var INSERTION_SORT_THRESHOLD = 32
+ 
+-function sortErrors(errors) {
+-    return [].concat(errors).sort(function (a, b) {
+-        return a.line - b.line;
+-    });
++function getMallocFree(dtype) {
++  switch(dtype) {
++    case "uint8":
++      return [pool.mallocUint8, pool.freeUint8]
++    case "uint16":
++      return [pool.mallocUint16, pool.freeUint16]
++    case "uint32":
++      return [pool.mallocUint32, pool.freeUint32]
++    case "int8":
++      return [pool.mallocInt8, pool.freeInt8]
++    case "int16":
++      return [pool.mallocInt16, pool.freeInt16]
++    case "int32":
++      return [pool.mallocInt32, pool.freeInt32]
++    case "float32":
++      return [pool.mallocFloat, pool.freeFloat]
++    case "float64":
++      return [pool.mallocDouble, pool.freeDouble]
++    default:
++      return null
++  }
+ }
+ 
+-function wrapCleanErrors(inner) {
+-    return function() {
+-        return sortErrors(inner.apply(this, arguments));
+-    };
++function shapeArgs(dimension) {
++  var args = []
++  for(var i=0; i<dimension; ++i) {
++    args.push("s"+i)
++  }
++  for(var i=0; i<dimension; ++i) {
++    args.push("n"+i)
++  }
++  for(var i=1; i<dimension; ++i) {
++    args.push("d"+i)
++  }
++  for(var i=1; i<dimension; ++i) {
++    args.push("e"+i)
++  }
++  for(var i=1; i<dimension; ++i) {
++    args.push("f"+i)
++  }
++  return args
+ }
+ 
+-module.exports = validateStyleMin;
++function createInsertionSort(order, dtype) {
+ 
+-},{"../reference/latest.min":398,"./validate/validate":380,"./validate/validate_constants":384,"./validate/validate_filter":386,"./validate/validate_glyphs_url":388,"./validate/validate_layer":389,"./validate/validate_layout_property":390,"./validate/validate_paint_property":393,"./validate/validate_source":394}],397:[function(require,module,exports){
+-module.exports = require('./v8.json');
++  var code = ["'use strict'"]
++  var funcName = ["ndarrayInsertionSort", order.join("d"), dtype].join("")
++  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
++  var allocator = getMallocFree(dtype)
++  
++  var vars = [ "i,j,cptr,ptr=left*s0+offset" ]
++  
++  if(order.length > 1) {
++    var scratch_shape = []
++    for(var i=1; i<order.length; ++i) {
++      vars.push("i"+i)
++      scratch_shape.push("n"+i)
++    }
++    if(allocator) {
++      vars.push("scratch=malloc(" + scratch_shape.join("*") + ")")
++    } else {
++      vars.push("scratch=new Array("+scratch_shape.join("*") + ")")
++    }
++    vars.push("dptr","sptr","a","b")
++  } else {
++    vars.push("scratch")
++  }
++  
++  function dataRead(ptr) {
++    if(dtype === "generic") {
++      return ["data.get(", ptr, ")"].join("")
++    }
++    return ["data[",ptr,"]"].join("")
++  }
++  
++  function dataWrite(ptr, v) {
++    if(dtype === "generic") {
++      return ["data.set(", ptr, ",", v, ")"].join("")
++    }
++    return ["data[",ptr,"]=",v].join("")
++  }
++  
++  //Create function header
++  code.push(
++    ["function ", funcName, "(", funcArgs.join(","), "){var ", vars.join(",")].join(""),
++      "for(i=left+1;i<=right;++i){",
++        "j=i;ptr+=s0",
++        "cptr=ptr")
++  
++  
++  if(order.length > 1) {
++  
++    //Copy data into scratch
++    code.push("dptr=0;sptr=ptr")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
++    }
++    code.push("scratch[dptr++]=",dataRead("sptr"))
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push("sptr+=d"+j,"}")
++    }
+ 
+-},{"./v8.json":399}],398:[function(require,module,exports){
+-module.exports = require('./v8.min.json');
++    
++    //Compare items in outer loop
++    code.push("__g:while(j-->left){",
++              "dptr=0",
++              "sptr=cptr-s0")
++    for(var i=1; i<order.length; ++i) {
++      if(i === 1) {
++        code.push("__l:")
++      }
++      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
++    }
++    code.push(["a=", dataRead("sptr"),"\nb=scratch[dptr]\nif(a<b){break __g}\nif(a>b){break __l}"].join(""))
++    for(var i=order.length-1; i>=1; --i) {
++      code.push(
++        "sptr+=e"+i,
++        "dptr+=f"+i,
++        "}")
++    }
++    
++    //Copy data back
++    code.push("dptr=cptr;sptr=cptr-s0")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
++    }
++    code.push(dataWrite("dptr", dataRead("sptr")))
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push(["dptr+=d",j,";sptr+=d",j].join(""),"}")
++    }
++    
++    //Close while loop
++    code.push("cptr-=s0\n}")
+ 
+-},{"./v8.min.json":400}],399:[function(require,module,exports){
+-module.exports={
+-  "$version": 8,
+-  "$root": {
+-    "version": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [8],
+-      "doc": "Stylesheet version number. Must be 8.",
+-      "example": 8
+-    },
+-    "name": {
+-      "type": "string",
+-      "doc": "A human-readable name for the style.",
+-      "example": "Bright"
+-    },
+-    "metadata": {
+-      "type": "*",
+-      "doc": "Arbitrary properties useful to track with the stylesheet, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
+-    },
+-    "center": {
+-      "type": "array",
+-      "value": "number",
+-      "doc": "Default map center in longitude and latitude.  The style center will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": [-73.9749, 40.7736]
+-    },
+-    "zoom": {
+-      "type": "number",
+-      "doc": "Default zoom level.  The style zoom will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": 12.5
+-    },
+-    "bearing": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "units": "degrees",
+-      "doc": "Default bearing, in degrees.  The style bearing will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": 29
+-    },
+-    "pitch": {
+-      "type": "number",
+-      "default": 0,
+-      "units": "degrees",
+-      "doc": "Default pitch, in degrees. Zero is perpendicular to the surface.  The style pitch will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": 50
+-    },
+-    "sources": {
+-      "required": true,
+-      "type": "sources",
+-      "doc": "Data source specifications.",
+-      "example": {
+-        "mapbox-streets": {
+-          "type": "vector",
+-          "url": "mapbox://mapbox.mapbox-streets-v6"
+-        }
++    //Copy scratch into cptr
++    code.push("dptr=cptr;sptr=0")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
++    }
++    code.push(dataWrite("dptr", "scratch[sptr++]"))
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push("dptr+=d"+j,"}")
++    }
++  } else {
++    code.push("scratch=" + dataRead("ptr"),
++              "while((j-->left)&&("+dataRead("cptr-s0")+">scratch)){",
++                dataWrite("cptr", dataRead("cptr-s0")),
++                "cptr-=s0",
++              "}",
++              dataWrite("cptr", "scratch"))
++  }
++  
++  //Close outer loop body
++  code.push("}")
++  if(order.length > 1 && allocator) {
++    code.push("free(scratch)")
++  }
++  code.push("} return " + funcName)
++  
++  //Compile and link function
++  if(allocator) {
++    var result = new Function("malloc", "free", code.join("\n"))
++    return result(allocator[0], allocator[1])
++  } else {
++    var result = new Function(code.join("\n"))
++    return result()
++  }
++}
++
++function createQuickSort(order, dtype, insertionSort) {
++  var code = [ "'use strict'" ]
++  var funcName = ["ndarrayQuickSort", order.join("d"), dtype].join("")
++  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
++  var allocator = getMallocFree(dtype)
++  var labelCounter=0
++  
++  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
++  
++  var vars = [
++    "sixth=((right-left+1)/6)|0",
++    "index1=left+sixth",
++    "index5=right-sixth",
++    "index3=(left+right)>>1",
++    "index2=index3-sixth",
++    "index4=index3+sixth",
++    "el1=index1",
++    "el2=index2",
++    "el3=index3",
++    "el4=index4",
++    "el5=index5",
++    "less=left+1",
++    "great=right-1",
++    "pivots_are_equal=true",
++    "tmp",
++    "tmp0",
++    "x",
++    "y",
++    "z",
++    "k",
++    "ptr0",
++    "ptr1",
++    "ptr2",
++    "comp_pivot1=0",
++    "comp_pivot2=0",
++    "comp=0"
++  ]
++  
++  if(order.length > 1) {
++    var ele_size = []
++    for(var i=1; i<order.length; ++i) {
++      ele_size.push("n"+i)
++      vars.push("i"+i)
++    }
++    for(var i=0; i<8; ++i) {
++      vars.push("b_ptr"+i)
++    }
++    vars.push(
++      "ptr3",
++      "ptr4",
++      "ptr5",
++      "ptr6",
++      "ptr7",
++      "pivot_ptr",
++      "ptr_shift",
++      "elementSize="+ele_size.join("*"))
++    if(allocator) {
++      vars.push("pivot1=malloc(elementSize)",
++                "pivot2=malloc(elementSize)")
++    } else {
++      vars.push("pivot1=new Array(elementSize),pivot2=new Array(elementSize)")
++    }
++  } else {
++    vars.push("pivot1", "pivot2")
++  }
++  
++  //Initialize local variables
++  code.push("var " + vars.join(","))
++  
++  function toPointer(v) {
++    return ["(offset+",v,"*s0)"].join("")
++  }
++  
++  function dataRead(ptr) {
++    if(dtype === "generic") {
++      return ["data.get(", ptr, ")"].join("")
++    }
++    return ["data[",ptr,"]"].join("")
++  }
++  
++  function dataWrite(ptr, v) {
++    if(dtype === "generic") {
++      return ["data.set(", ptr, ",", v, ")"].join("")
++    }
++    return ["data[",ptr,"]=",v].join("")
++  }
++  
++  function cacheLoop(ptrs, usePivot, body) {
++    if(ptrs.length === 1) {
++      code.push("ptr0="+toPointer(ptrs[0]))
++    } else {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
+       }
+-    },
+-    "sprite": {
+-      "type": "string",
+-      "doc": "A base URL for retrieving the sprite image and metadata. The extensions `.png`, `.json` and scale factor `@2x.png` will be automatically appended. This property is required if any layer uses the 'sprite-image' layout property.",
+-      "example": "mapbox://sprites/mapbox/bright-v8"
+-    },
+-    "glyphs": {
+-      "type": "string",
+-      "doc": "A URL template for loading signed-distance-field glyph sets in PBF format. The URL must include `{fontstack}` and `{range}` tokens. This property is required if any layer uses the 'text-field' layout property.",
+-      "example": "mapbox://fonts/mapbox/{fontstack}/{range}.pbf"
+-    },
+-    "transition": {
+-      "type": "transition",
+-      "doc": "A global transition definition to use as a default across properties.",
+-      "example": {
+-        "duration": 300,
+-        "delay": 0
++    }
++    if(usePivot) {
++      code.push("pivot_ptr=0")
++    }
++    code.push("ptr_shift=offset")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
+       }
+-    },
+-    "layers": {
+-      "required": true,
+-      "type": "array",
+-      "value": "layer",
+-      "doc": "Layers will be drawn in the order of this array.",
+-      "example": [
+-        {
+-          "id": "water",
+-          "source": "mapbox-streets",
+-          "source-layer": "water",
+-          "type": "fill",
+-          "paint": {
+-            "fill-color": "#00ffff"
+-          }
+-        }
+-      ]
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+     }
+-  },
+-  "sources": {
+-    "*": {
+-      "type": "source",
+-      "doc": "Specification of a data source. For vector and raster sources, either TileJSON or a URL to a TileJSON must be provided. For GeoJSON and video sources, a URL must be provided."
++    if(ptrs.length > 1) {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
++      }
+     }
+-  },
+-  "source": [
+-    "source_tile",
+-    "source_geojson",
+-    "source_video",
+-    "source_image"
+-  ],
+-  "source_tile": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "vector",
+-        "raster"
+-      ],
+-      "doc": "The data type of the tile source."
+-    },
+-    "url": {
+-      "type": "string",
+-      "doc": "A URL to a TileJSON resource. Supported protocols are `http:`, `https:`, and `mapbox://<mapid>`."
+-    },
+-    "tiles": {
+-      "type": "array",
+-      "value": "string",
+-      "doc": "An array of one or more tile source URLs, as in the TileJSON spec."
+-    },
+-    "minzoom": {
+-      "type": "number",
+-      "default": 0,
+-      "doc": "Minimum zoom level for which tiles are available, as in the TileJSON spec."
+-    },
+-    "maxzoom": {
+-      "type": "number",
+-      "default": 22,
+-      "doc": "Maximum zoom level for which tiles are available, as in the TileJSON spec. Data from tiles at the maxzoom are used when displaying the map at higher zoom levels."
+-    },
+-    "tileSize": {
+-      "type": "number",
+-      "default": 512,
+-      "units": "pixels",
+-      "doc": "The minimum visual size to display tiles for this layer. Only configurable for raster layers."
+-    },
+-    "*": {
+-      "type": "*",
+-      "doc": "Other keys to configure the data source."
++    code.push(body)
++    if(usePivot) {
++      code.push("++pivot_ptr")
+     }
+-  },
+-  "source_geojson": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "geojson"
+-      ],
+-      "doc": "The data type of the GeoJSON source."
+-    },
+-    "data": {
+-      "type": "*",
+-      "doc": "A URL to a GeoJSON file, or inline GeoJSON."
+-    },
+-    "maxzoom": {
+-      "type": "number",
+-      "default": 14,
+-      "doc": "Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels)."
+-    },
+-    "buffer": {
+-      "type": "number",
+-      "default": 64,
+-      "doc": "Tile buffer size on each side (higher means fewer rendering artifacts near tile edges but slower performance)."
+-    },
+-    "tolerance": {
+-      "type": "number",
+-      "default": 3,
+-      "doc": "Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance)."
+-    },
+-    "cluster": {
+-      "type": "boolean",
+-      "default": false,
+-      "doc": "If the data is a collection of point features, setting this to true clusters the points by radius into groups."
+-    },
+-    "clusterRadius": {
+-      "type": "number",
+-      "default": 400,
+-      "doc": "Radius of each cluster when clustering points, relative to 4096 tile."
+-    },
+-    "clusterMaxZoom": {
+-      "type": "number",
+-      "doc": "Max zoom to cluster points on. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered)."
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      if(ptrs.length>1) {
++        code.push("ptr_shift+=d"+j)
++      } else {
++        code.push("ptr0+=d"+j)
++      }
++      code.push("}")
+     }
+-  },
+-  "source_video": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "video"
+-      ],
+-      "doc": "The data type of the video source."
+-    },
+-    "urls": {
+-      "required": true,
+-      "type": "array",
+-      "value": "string",
+-      "doc": "URLs to video content in order of preferred format."
+-    },
+-    "coordinates": {
+-      "required": true,
+-      "doc": "Corners of video specified in longitude, latitude pairs.",
+-      "type": "array",
+-      "length": 4,
+-      "value": {
+-        "type": "array",
+-        "length": 2,
+-        "value": "number",
+-        "doc": "A single longitude, latitude pair."
++  }
++  
++  function lexicoLoop(label, ptrs, usePivot, body) {
++    if(ptrs.length === 1) {
++      code.push("ptr0="+toPointer(ptrs[0]))
++    } else {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
+       }
++      code.push("ptr_shift=offset")
+     }
+-  },
+-  "source_image": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "image"
+-      ],
+-      "doc": "The data type of the image source."
+-    },
+-    "url": {
+-      "required": true,
+-      "type": "string",
+-      "doc": "URL that points to an image"
+-    },
+-    "coordinates": {
+-      "required": true,
+-      "doc": "Corners of image specified in longitude, latitude pairs.",
+-      "type": "array",
+-      "length": 4,
+-      "value": {
+-        "type": "array",
+-        "length": 2,
+-        "value": "number",
+-        "doc": "A single longitude, latitude pair."
++    if(usePivot) {
++      code.push("pivot_ptr=0")
++    }
++    if(label) {
++      code.push(label+":")
++    }
++    for(var i=1; i<order.length; ++i) {
++      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
++    }
++    if(ptrs.length > 1) {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
+       }
+     }
+-  },
+-  "layer": {
+-    "id": {
+-      "type": "string",
+-      "doc": "Unique layer name.",
+-      "required": true
+-    },
+-    "type": {
+-      "type": "enum",
+-      "values": [
+-        "fill",
+-        "line",
+-        "symbol",
+-        "circle",
+-        "raster",
+-        "background"
+-      ],
+-      "doc": "Rendering type of this layer."
+-    },
+-    "metadata": {
+-      "type": "*",
+-      "doc": "Arbitrary properties useful to track with the layer, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
+-    },
+-    "ref": {
+-      "type": "string",
+-      "doc": "References another layer to copy `type`, `source`, `source-layer`, `minzoom`, `maxzoom`, `filter`, and `layout` properties from. This allows the layers to share processing and be more efficient."
+-    },
+-    "source": {
+-      "type": "string",
+-      "doc": "Name of a source description to be used for this layer."
+-    },
+-    "source-layer": {
+-      "type": "string",
+-      "doc": "Layer to use from a vector tile source. Required if the source supports multiple layers."
+-    },
+-    "minzoom": {
+-      "type": "number",
+-      "minimum": 0,
+-      "maximum": 22,
+-      "doc": "The minimum zoom level on which the layer gets parsed and appears on."
+-    },
+-    "maxzoom": {
+-      "type": "number",
+-      "minimum": 0,
+-      "maximum": 22,
+-      "doc": "The maximum zoom level on which the layer gets parsed and appears on."
+-    },
+-    "interactive": {
+-      "type": "boolean",
+-      "doc": "Enable querying of feature data from this layer for interactivity.",
+-      "default": false
+-    },
+-    "filter": {
+-      "type": "filter",
+-      "doc": "A expression specifying conditions on source features. Only features that match the filter are displayed."
+-    },
+-    "layout": {
+-      "type": "layout",
+-      "doc": "Layout properties for the layer."
+-    },
+-    "paint": {
+-      "type": "paint",
+-      "doc": "Default paint properties for this layer."
+-    },
+-    "paint.*": {
+-      "type": "paint",
+-      "doc": "Class-specific paint properties for this layer. The class name is the part after the first dot."
++    code.push(body)
++    for(var i=order.length-1; i>=1; --i) {
++      if(usePivot) {
++        code.push("pivot_ptr+=f"+i)
++      }
++      if(ptrs.length > 1) {
++        code.push("ptr_shift+=e"+i)
++      } else {
++        code.push("ptr0+=e"+i)
++      }
++      code.push("}")
+     }
+-  },
+-  "layout": [
+-    "layout_fill",
+-    "layout_line",
+-    "layout_circle",
+-    "layout_symbol",
+-    "layout_raster",
+-    "layout_background"
+-  ],
+-  "layout_background": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++  }
++  
++  function cleanUp() {
++    if(order.length > 1 && allocator) {
++      code.push("free(pivot1)", "free(pivot2)")
+     }
+-  },
+-  "layout_fill": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++  }
++  
++  function compareSwap(a_id, b_id) {
++    var a = "el"+a_id
++    var b = "el"+b_id
++    if(order.length > 1) {
++      var lbl = "__l" + (++labelCounter)
++      lexicoLoop(lbl, [a, b], false, [
++        "comp=",dataRead("ptr0"),"-",dataRead("ptr1"),"\n",
++        "if(comp>0){tmp0=", a, ";",a,"=",b,";", b,"=tmp0;break ", lbl,"}\n",
++        "if(comp<0){break ", lbl, "}"
++      ].join(""))
++    } else {
++      code.push(["if(", dataRead(toPointer(a)), ">", dataRead(toPointer(b)), "){tmp0=", a, ";",a,"=",b,";", b,"=tmp0}"].join(""))
+     }
+-  },
+-  "layout_circle": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++  }
++  
++  compareSwap(1, 2)
++  compareSwap(4, 5)
++  compareSwap(1, 3)
++  compareSwap(2, 3)
++  compareSwap(1, 4)
++  compareSwap(3, 4)
++  compareSwap(2, 5)
++  compareSwap(2, 3)
++  compareSwap(4, 5)
++  
++  if(order.length > 1) {
++    cacheLoop(["el1", "el2", "el3", "el4", "el5", "index1", "index3", "index5"], true, [
++      "pivot1[pivot_ptr]=",dataRead("ptr1"),"\n",
++      "pivot2[pivot_ptr]=",dataRead("ptr3"),"\n",
++      "pivots_are_equal=pivots_are_equal&&(pivot1[pivot_ptr]===pivot2[pivot_ptr])\n",
++      "x=",dataRead("ptr0"),"\n",
++      "y=",dataRead("ptr2"),"\n",
++      "z=",dataRead("ptr4"),"\n",
++      dataWrite("ptr5", "x"),"\n",
++      dataWrite("ptr6", "y"),"\n",
++      dataWrite("ptr7", "z")
++    ].join(""))
++  } else {
++    code.push([
++      "pivot1=", dataRead(toPointer("el2")), "\n",
++      "pivot2=", dataRead(toPointer("el4")), "\n",
++      "pivots_are_equal=pivot1===pivot2\n",
++      "x=", dataRead(toPointer("el1")), "\n",
++      "y=", dataRead(toPointer("el3")), "\n",
++      "z=", dataRead(toPointer("el5")), "\n",
++      dataWrite(toPointer("index1"), "x"), "\n",
++      dataWrite(toPointer("index3"), "y"), "\n",
++      dataWrite(toPointer("index5"), "z")
++    ].join(""))
++  }
++  
++
++  function moveElement(dst, src) {
++    if(order.length > 1) {
++      cacheLoop([dst, src], false,
++        dataWrite("ptr0", dataRead("ptr1"))
++      )
++    } else {
++      code.push(dataWrite(toPointer(dst), dataRead(toPointer(src))))
++    }
++  }
++  
++  moveElement("index2", "left")
++  moveElement("index4", "right")
++  
++  function comparePivot(result, ptr, n) {
++    if(order.length > 1) {
++      var lbl = "__l" + (++labelCounter)
++      lexicoLoop(lbl, [ptr], true, [
++        result,"=",dataRead("ptr0"),"-pivot",n,"[pivot_ptr]\n",
++        "if(",result,"!==0){break ", lbl, "}"
++      ].join(""))
++    } else {
++      code.push([result,"=", dataRead(toPointer(ptr)), "-pivot", n].join(""))
++    }
++  }
++  
++  function swapElements(a, b) {
++    if(order.length > 1) {
++      cacheLoop([a,b],false,[
++        "tmp=",dataRead("ptr0"),"\n",
++        dataWrite("ptr0", dataRead("ptr1")),"\n",
++        dataWrite("ptr1", "tmp")
++      ].join(""))
++    } else {
++      code.push([
++        "ptr0=",toPointer(a),"\n",
++        "ptr1=",toPointer(b),"\n",
++        "tmp=",dataRead("ptr0"),"\n",
++        dataWrite("ptr0", dataRead("ptr1")),"\n",
++        dataWrite("ptr1", "tmp")
++      ].join(""))
++    }
++  }
++  
++  function tripleSwap(k, less, great) {
++    if(order.length > 1) {
++      cacheLoop([k,less,great], false, [
++        "tmp=",dataRead("ptr0"),"\n",
++        dataWrite("ptr0", dataRead("ptr1")),"\n",
++        dataWrite("ptr1", dataRead("ptr2")),"\n",
++        dataWrite("ptr2", "tmp")
++      ].join(""))
++      code.push("++"+less, "--"+great)
++    } else {
++      code.push([
++        "ptr0=",toPointer(k),"\n",
++        "ptr1=",toPointer(less),"\n",
++        "ptr2=",toPointer(great),"\n",
++        "++",less,"\n",
++        "--",great,"\n",
++        "tmp=", dataRead("ptr0"), "\n",
++        dataWrite("ptr0", dataRead("ptr1")), "\n",
++        dataWrite("ptr1", dataRead("ptr2")), "\n",
++        dataWrite("ptr2", "tmp")
++      ].join(""))
++    }
++  }
++  
++  function swapAndDecrement(k, great) {
++    swapElements(k, great)
++    code.push("--"+great)
++  }
++    
++  code.push("if(pivots_are_equal){")
++    //Pivots are equal case
++    code.push("for(k=less;k<=great;++k){")
++      comparePivot("comp", "k", 1)
++      code.push("if(comp===0){continue}")
++      code.push("if(comp<0){")
++        code.push("if(k!==less){")
++          swapElements("k", "less")
++        code.push("}")
++        code.push("++less")
++      code.push("}else{")
++        code.push("while(true){")
++          comparePivot("comp", "great", 1)
++          code.push("if(comp>0){")
++            code.push("great--")
++          code.push("}else if(comp<0){")
++            tripleSwap("k", "less", "great")
++            code.push("break")
++          code.push("}else{")
++            swapAndDecrement("k", "great")
++            code.push("break")
++          code.push("}")
++        code.push("}")
++      code.push("}")
++    code.push("}")
++  code.push("}else{")
++    //Pivots not equal case
++    code.push("for(k=less;k<=great;++k){")
++      comparePivot("comp_pivot1", "k", 1)
++      code.push("if(comp_pivot1<0){")
++        code.push("if(k!==less){")
++          swapElements("k", "less")
++        code.push("}")
++        code.push("++less")
++      code.push("}else{")
++        comparePivot("comp_pivot2", "k", 2)
++        code.push("if(comp_pivot2>0){")
++          code.push("while(true){")
++            comparePivot("comp", "great", 2)
++            code.push("if(comp>0){")
++              code.push("if(--great<k){break}")
++              code.push("continue")
++            code.push("}else{")
++              comparePivot("comp", "great", 1)
++              code.push("if(comp<0){")
++                tripleSwap("k", "less", "great")
++              code.push("}else{")
++                swapAndDecrement("k", "great")
++              code.push("}")
++              code.push("break")
++            code.push("}")
++          code.push("}")
++        code.push("}")
++      code.push("}")
++    code.push("}")
++  code.push("}")
++  
++  //Move pivots to correct place
++  function storePivot(mem_dest, pivot_dest, pivot) {
++    if(order.length>1) {
++      cacheLoop([mem_dest, pivot_dest], true, [
++        dataWrite("ptr0", dataRead("ptr1")), "\n",
++        dataWrite("ptr1", ["pivot",pivot,"[pivot_ptr]"].join(""))
++      ].join(""))
++    } else {
++      code.push(
++          dataWrite(toPointer(mem_dest), dataRead(toPointer(pivot_dest))),
++          dataWrite(toPointer(pivot_dest), "pivot"+pivot))
+     }
+-  },
+-  "layout_line": {
+-    "line-cap": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "butt",
+-        "round",
+-        "square"
+-      ],
+-      "default": "butt",
+-      "doc": "The display of line endings."
+-    },
+-    "line-join": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "bevel",
+-        "round",
+-        "miter"
+-      ],
+-      "default": "miter",
+-      "doc": "The display of lines when joining."
+-    },
+-    "line-miter-limit": {
+-      "type": "number",
+-      "default": 2,
+-      "function": "interpolated",
+-      "doc": "Used to automatically convert miter joins to bevel joins for sharp angles.",
+-      "requires": [
+-        {
+-          "line-join": "miter"
+-        }
+-      ]
+-    },
+-    "line-round-limit": {
+-      "type": "number",
+-      "default": 1.05,
+-      "function": "interpolated",
+-      "doc": "Used to automatically convert round joins to miter joins for shallow angles.",
+-      "requires": [
+-        {
+-          "line-join": "round"
+-        }
+-      ]
+-    },
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++  }
++  
++  storePivot("left", "(less-1)", 1)
++  storePivot("right", "(great+1)", 2)
++
++  //Recursive sort call
++  function doSort(left, right) {
++    code.push([
++      "if((",right,"-",left,")<=",INSERTION_SORT_THRESHOLD,"){\n",
++        "insertionSort(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
++      "}else{\n",
++        funcName, "(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
++      "}"
++    ].join(""))
++  }
++  doSort("left", "(less-2)")
++  doSort("(great+2)", "right")
++  
++  //If pivots are equal, then early out
++  code.push("if(pivots_are_equal){")
++    cleanUp()
++    code.push("return")
++  code.push("}")
++  
++  function walkPointer(ptr, pivot, body) {
++    if(order.length > 1) {
++      code.push(["__l",++labelCounter,":while(true){"].join(""))
++      cacheLoop([ptr], true, [
++        "if(", dataRead("ptr0"), "!==pivot", pivot, "[pivot_ptr]){break __l", labelCounter, "}"
++      ].join(""))
++      code.push(body, "}")
++    } else {
++      code.push(["while(", dataRead(toPointer(ptr)), "===pivot", pivot, "){", body, "}"].join(""))
+     }
+-  },
+-  "layout_symbol": {
+-    "symbol-placement": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-          "point",
+-          "line"
+-      ],
+-      "default": "point",
+-      "doc": "Label placement relative to its geometry. `line` can only be used on LineStrings and Polygons."
+-    },
+-    "symbol-spacing": {
+-      "type": "number",
+-      "default": 250,
+-      "minimum": 1,
+-      "function": "interpolated",
+-      "units": "pixels",
+-      "doc": "Distance between two symbol anchors.",
+-      "requires": [
+-        {
+-          "symbol-placement": "line"
+-        }
+-      ]
+-    },
+-    "symbol-avoid-edges": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer."
+-    },
+-    "icon-allow-overlap": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the icon will be visible even if it collides with other previously drawn symbols.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-ignore-placement": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, other symbols can be visible even if they collide with the icon.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-optional": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.",
+-      "requires": [
+-        "icon-image",
+-        "text-field"
+-      ]
+-    },
+-    "icon-rotation-alignment": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "default": "viewport",
+-      "doc": "Orientation of icon when map is rotated.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-size": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "doc": "Scale factor for icon. 1 is original size, 3 triples the size.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-image": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "doc": "A string with {tokens} replaced, referencing the data property to pull from.",
+-      "tokens": true
+-    },
+-    "icon-rotate": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "function": "interpolated",
+-      "units": "degrees",
+-      "doc": "Rotates the icon clockwise.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-padding": {
+-      "type": "number",
+-      "default": 2,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "units": "pixels",
+-      "doc": "Size of the additional area around the icon bounding box used for detecting symbol collisions.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-keep-upright": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the icon may be flipped to prevent it from being rendered upside-down.",
+-      "requires": [
+-        "icon-image",
+-        {
+-          "icon-rotation-alignment": "map"
+-        },
+-        {
+-          "symbol-placement": "line"
+-        }
+-      ]
+-    },
+-    "icon-offset": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "doc": "Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "text-rotation-alignment": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "default": "viewport",
+-      "doc": "Orientation of text when map is rotated.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-field": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "default": "",
+-      "tokens": true,
+-      "doc": "Value to use for a text label. Feature properties are specified using tokens like {field_name}."
+-    },
+-    "text-font": {
+-      "type": "array",
+-      "value": "string",
+-      "function": "piecewise-constant",
+-      "default": ["Open Sans Regular", "Arial Unicode MS Regular"],
+-      "doc": "Font stack to use for displaying text.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-size": {
+-      "type": "number",
+-      "default": 16,
+-      "minimum": 0,
+-      "units": "pixels",
+-      "function": "interpolated",
+-      "doc": "Font size.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-max-width": {
+-      "type": "number",
+-      "default": 10,
+-      "minimum": 0,
+-      "units": "em",
+-      "function": "interpolated",
+-      "doc": "The maximum line width for text wrapping.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-line-height": {
+-      "type": "number",
+-      "default": 1.2,
+-      "units": "em",
+-      "function": "interpolated",
+-      "doc": "Text leading value for multi-line text.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-letter-spacing": {
+-      "type": "number",
+-      "default": 0,
+-      "units": "em",
+-      "function": "interpolated",
+-      "doc": "Text tracking amount.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-justify": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "left",
+-        "center",
+-        "right"
+-      ],
+-      "default": "center",
+-      "doc": "Text justification options.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "center",
+-        "left",
+-        "right",
+-        "top",
+-        "bottom",
+-        "top-left",
+-        "top-right",
+-        "bottom-left",
+-        "bottom-right"
+-      ],
+-      "default": "center",
+-      "doc": "Part of the text placed closest to the anchor.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-max-angle": {
+-      "type": "number",
+-      "default": 45,
+-      "units": "degrees",
+-      "function": "interpolated",
+-      "doc": "Maximum angle change between adjacent characters.",
+-      "requires": [
+-        "text-field",
+-        {
+-          "symbol-placement": "line"
+-        }
+-      ]
+-    },
+-    "text-rotate": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "units": "degrees",
+-      "function": "interpolated",
+-      "doc": "Rotates the text clockwise.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-padding": {
+-      "type": "number",
+-      "default": 2,
+-      "minimum": 0,
+-      "units": "pixels",
+-      "function": "interpolated",
+-      "doc": "Size of the additional area around the text bounding box used for detecting symbol collisions.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-keep-upright": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": true,
+-      "doc": "If true, the text may be flipped vertically to prevent it from being rendered upside-down.",
+-      "requires": [
+-        "text-field",
+-        {
+-          "text-rotation-alignment": "map"
+-        },
+-        {
+-          "symbol-placement": "line"
+-        }
+-      ]
+-    },
+-    "text-transform": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "none",
+-        "uppercase",
+-        "lowercase"
+-      ],
+-      "default": "none",
+-      "doc": "Specifies how to capitalize text, similar to the CSS `text-transform` property.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-offset": {
+-      "type": "array",
+-      "doc": "Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
+-      "value": "number",
+-      "units": "ems",
+-      "function": "interpolated",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-allow-overlap": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the text will be visible even if it collides with other previously drawn symbols.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-ignore-placement": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, other symbols can be visible even if they collide with the text.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-optional": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not.",
+-      "requires": [
+-        "text-field",
+-        "icon-image"
+-      ]
+-    },
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++  }
++  
++  //Check bounds
++  code.push("if(less<index1&&great>index5){")
++  
++    walkPointer("less", 1, "++less")
++    walkPointer("great", 2, "--great")
++  
++    code.push("for(k=less;k<=great;++k){")
++      comparePivot("comp_pivot1", "k", 1)
++      code.push("if(comp_pivot1===0){")
++        code.push("if(k!==less){")
++          swapElements("k", "less")
++        code.push("}")
++        code.push("++less")
++      code.push("}else{")
++        comparePivot("comp_pivot2", "k", 2)
++        code.push("if(comp_pivot2===0){")
++          code.push("while(true){")
++            comparePivot("comp", "great", 2)
++            code.push("if(comp===0){")
++              code.push("if(--great<k){break}")
++              code.push("continue")
++            code.push("}else{")
++              comparePivot("comp", "great", 1)
++              code.push("if(comp<0){")
++                tripleSwap("k", "less", "great")
++              code.push("}else{")
++                swapAndDecrement("k", "great")
++              code.push("}")
++              code.push("break")
++            code.push("}")
++          code.push("}")
++        code.push("}")
++      code.push("}")
++    code.push("}")
++  code.push("}")
++  
++  //Clean up and do a final sorting pass
++  cleanUp()
++  doSort("less", "great")
++ 
++  //Close off main loop
++  code.push("}return " + funcName)
++  
++  //Compile and link
++  if(order.length > 1 && allocator) {
++    var compiled = new Function("insertionSort", "malloc", "free", code.join("\n"))
++    return compiled(insertionSort, allocator[0], allocator[1])
++  }
++  var compiled = new Function("insertionSort", code.join("\n"))
++  return compiled(insertionSort)
++}
++
++function compileSort(order, dtype) {
++  var code = ["'use strict'"]
++  var funcName = ["ndarraySortWrapper", order.join("d"), dtype].join("")
++  var funcArgs = [ "array" ]
++  
++  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
++  
++  //Unpack local variables from array
++  var vars = ["data=array.data,offset=array.offset|0,shape=array.shape,stride=array.stride"]
++  for(var i=0; i<order.length; ++i) {
++    vars.push(["s",i,"=stride[",i,"]|0,n",i,"=shape[",i,"]|0"].join(""))
++  }
++  
++  var scratch_stride = new Array(order.length)
++  var nprod = []
++  for(var i=0; i<order.length; ++i) {
++    var k = order[i]
++    if(k === 0) {
++      continue
+     }
+-  },
+-  "layout_raster": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++    if(nprod.length === 0) {
++      scratch_stride[k] = "1"
++    } else {
++      scratch_stride[k] = nprod.join("*")
+     }
+-  },
+-  "filter": {
+-    "type": "array",
+-    "value": "*",
+-    "doc": "A filter selects specific features from a layer."
+-  },
+-  "filter_operator": {
+-    "type": "enum",
+-    "values": [
+-      "==",
+-      "!=",
+-      ">",
+-      ">=",
+-      "<",
+-      "<=",
+-      "in",
+-      "!in",
+-      "all",
+-      "any",
+-      "none",
+-      "has",
+-      "!has"
+-    ],
+-    "doc": "The filter operator."
+-  },
+-  "geometry_type": {
+-    "type": "enum",
+-    "values": [
+-      "Point",
+-      "LineString",
+-      "Polygon"
+-    ],
+-    "doc": "The geometry type for the filter to select."
+-  },
+-  "color_operation": {
+-    "type": "enum",
+-    "values": [
+-      "lighten",
+-      "saturate",
+-      "spin",
+-      "fade",
+-      "mix"
+-    ],
+-    "doc": "A color operation to apply."
+-  },
+-  "function": {
+-    "stops": {
+-      "type": "array",
+-      "required": true,
+-      "doc": "An array of stops.",
+-      "value": "function_stop"
+-    },
+-    "base": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "doc": "The exponential base of the interpolation curve. It controls the rate at which the result increases. Higher values make the result increase more towards the high end of the range. With `1` the stops are interpolated linearly."
+-    },
+-    "property": {
+-      "type": "string",
+-      "doc": "The name of a global property or feature property to use as the function input.",
+-      "default": "$zoom"
+-    },
+-    "type": {
+-      "type": "enum",
+-      "values": [
+-          "exponential",
+-          "interval",
+-          "categorical"
+-      ],
+-      "doc": "The interpolation strategy to use in function evaluation.",
+-      "default": "exponential"
++    nprod.push("n"+k)
++  }
++  
++  var p = -1, q = -1
++  for(var i=0; i<order.length; ++i) {
++    var j = order[i]
++    if(j !== 0) {
++      if(p > 0) {
++        vars.push(["d",j,"=s",j,"-d",p,"*n",p].join(""))
++      } else {
++        vars.push(["d",j,"=s",j].join(""))
++      }
++      p = j
+     }
+-  },
+-  "function_stop": {
+-    "type": "array",
+-    "minimum": 0,
+-    "maximum": 22,
+-    "value": [
+-      "number",
+-      "color"
+-    ],
+-    "length": 2,
+-    "doc": "Zoom level and value pair."
+-  },
+-  "paint": [
+-    "paint_fill",
+-    "paint_line",
+-    "paint_circle",
+-    "paint_symbol",
+-    "paint_raster",
+-    "paint_background"
+-  ],
+-  "paint_fill": {
+-    "fill-antialias": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": true,
+-      "doc": "Whether or not the fill should be antialiased."
+-    },
+-    "fill-opacity": {
+-      "type": "number",
+-      "function": "interpolated",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "doc": "The opacity given to the fill color.",
+-      "transition": true
+-    },
+-    "fill-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "doc": "The color of the fill.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "fill-pattern"
+-        }
+-      ]
+-    },
+-    "fill-outline-color": {
+-      "type": "color",
+-      "doc": "The outline color of the fill. Matches the value of `fill-color` if unspecified.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "fill-pattern"
+-        },
+-        {
+-          "fill-antialias": true
+-        }
+-      ]
+-    },
+-    "fill-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."
+-    },
+-    "fill-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
+-      "default": "map",
+-      "requires": [
+-        "fill-translate"
+-      ]
+-    },
+-    "fill-pattern": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "transition": true,
+-      "doc": "Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512)."
++    var k = order.length-1-i
++    if(k !== 0) {
++      if(q > 0) {
++        vars.push(["e",k,"=s",k,"-e",q,"*n",q,
++                  ",f",k,"=",scratch_stride[k],"-f",q,"*n",q].join(""))
++      } else {
++        vars.push(["e",k,"=s",k,",f",k,"=",scratch_stride[k]].join(""))
++      }
++      q = k
+     }
+-  },
+-  "paint_line": {
+-    "line-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the line will be drawn.",
+-      "function": "interpolated",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "transition": true
+-    },
+-    "line-color": {
+-      "type": "color",
+-      "doc": "The color with which the line will be drawn.",
+-      "default": "#000000",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "line-pattern"
+-        }
+-      ]
+-    },
+-    "line-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."
+-    },
+-    "line-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
+-      "default": "map",
+-      "requires": [
+-        "line-translate"
+-      ]
+-    },
+-    "line-width": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Stroke thickness."
+-    },
+-    "line-gap-width": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "doc": "Draws a line casing outside of a line's actual path. Value indicates the width of the inner gap.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels"
+-    },
+-    "line-offset": {
+-      "type": "number",
+-      "default": 0,
+-      "doc": "The line's offset perpendicular to its direction. Values may be positive or negative, where positive indicates \"rightwards\" (if you were moving in the direction of the line) and negative indicates \"leftwards.\"",
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels"
+-    },
+-    "line-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Blur applied to the line, in pixels."
+-    },
+-    "line-dasharray": {
+-      "type": "array",
+-      "value": "number",
+-      "function": "piecewise-constant",
+-      "doc": "Specifies the lengths of the alternating dashes and gaps that form the dash pattern. The lengths are later scaled by the line width. To convert a dash length to pixels, multiply the length by the current line width.",
+-      "minimum": 0,
+-      "transition": true,
+-      "units": "line widths",
+-      "requires": [
+-        {
+-          "!": "line-pattern"
+-        }
+-      ]
+-    },
+-    "line-pattern": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "transition": true,
+-      "doc": "Name of image in sprite to use for drawing image lines. For seamless patterns, image width must be a factor of two (2, 4, 8, ..., 512)."
++  }
++  
++  //Declare local variables
++  code.push("var " + vars.join(","))
++  
++  //Create arguments for subroutine
++  var sortArgs = ["0", "n0-1", "data", "offset"].concat(shapeArgs(order.length))
++  
++  //Call main sorting routine
++  code.push([
++    "if(n0<=",INSERTION_SORT_THRESHOLD,"){",
++      "insertionSort(", sortArgs.join(","), ")}else{",
++      "quickSort(", sortArgs.join(","),
++    ")}"
++  ].join(""))
++  
++  //Return
++  code.push("}return " + funcName)
++  
++  //Link everything together
++  var result = new Function("insertionSort", "quickSort", code.join("\n"))
++  var insertionSort = createInsertionSort(order, dtype)
++  var quickSort = createQuickSort(order, dtype, insertionSort)
++  return result(insertionSort, quickSort)
++}
++
++module.exports = compileSort
++},{"typedarray-pool":449}],383:[function(require,module,exports){
++"use strict"
++
++var compile = require("./lib/compile_sort.js")
++var CACHE = {}
++
++function sort(array) {
++  var order = array.order
++  var dtype = array.dtype
++  var typeSig = [order, dtype ]
++  var typeName = typeSig.join(":")
++  var compiled = CACHE[typeName]
++  if(!compiled) {
++    CACHE[typeName] = compiled = compile(order, dtype)
++  }
++  compiled(array)
++  return array
++}
++
++module.exports = sort
++},{"./lib/compile_sort.js":382}],384:[function(require,module,exports){
++'use strict'
++
++var interp  = require('ndarray-linear-interpolate')
++
++
++var do_warp = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=new Array(_inline_21_arg4_)}","args":[{"name":"_inline_21_arg0_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_21_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_21_arg2_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_21_arg3_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_21_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_22_arg2_(this_warped,_inline_22_arg0_),_inline_22_arg1_=_inline_22_arg3_.apply(void 0,this_warped)}","args":[{"name":"_inline_22_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_22_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_22_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_22_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_22_arg4_","lvalue":false,"rvalue":false,"count":0}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warpND","blockSize":64})
++
++var do_warp_1 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_25_arg2_(this_warped,_inline_25_arg0_),_inline_25_arg1_=_inline_25_arg3_(_inline_25_arg4_,this_warped[0])}","args":[{"name":"_inline_25_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_25_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_25_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_25_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_25_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp1D","blockSize":64})
++
++var do_warp_2 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_28_arg2_(this_warped,_inline_28_arg0_),_inline_28_arg1_=_inline_28_arg3_(_inline_28_arg4_,this_warped[0],this_warped[1])}","args":[{"name":"_inline_28_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_28_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_28_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_28_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_28_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp2D","blockSize":64})
++
++var do_warp_3 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_31_arg2_(this_warped,_inline_31_arg0_),_inline_31_arg1_=_inline_31_arg3_(_inline_31_arg4_,this_warped[0],this_warped[1],this_warped[2])}","args":[{"name":"_inline_31_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_31_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_31_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_31_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_31_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp3D","blockSize":64})
++
++module.exports = function warp(dest, src, func) {
++  switch(src.shape.length) {
++    case 1:
++      do_warp_1(dest, func, interp.d1, src)
++      break
++    case 2:
++      do_warp_2(dest, func, interp.d2, src)
++      break
++    case 3:
++      do_warp_3(dest, func, interp.d3, src)
++      break
++    default:
++      do_warp(dest, func, interp.bind(undefined, src), src.shape.length)
++      break
++  }
++  return dest
++}
++
++},{"cwise/lib/wrapper":89,"ndarray-linear-interpolate":378}],385:[function(require,module,exports){
++var iota = require("iota-array")
++var isBuffer = require("is-buffer")
++
++var hasTypedArrays  = ((typeof Float64Array) !== "undefined")
++
++function compare1st(a, b) {
++  return a[0] - b[0]
++}
++
++function order() {
++  var stride = this.stride
++  var terms = new Array(stride.length)
++  var i
++  for(i=0; i<terms.length; ++i) {
++    terms[i] = [Math.abs(stride[i]), i]
++  }
++  terms.sort(compare1st)
++  var result = new Array(terms.length)
++  for(i=0; i<result.length; ++i) {
++    result[i] = terms[i][1]
++  }
++  return result
++}
++
++function compileConstructor(dtype, dimension) {
++  var className = ["View", dimension, "d", dtype].join("")
++  if(dimension < 0) {
++    className = "View_Nil" + dtype
++  }
++  var useGetters = (dtype === "generic")
++
++  if(dimension === -1) {
++    //Special case for trivial arrays
++    var code =
++      "function "+className+"(a){this.data=a;};\
++var proto="+className+".prototype;\
++proto.dtype='"+dtype+"';\
++proto.index=function(){return -1};\
++proto.size=0;\
++proto.dimension=-1;\
++proto.shape=proto.stride=proto.order=[];\
++proto.lo=proto.hi=proto.transpose=proto.step=\
++function(){return new "+className+"(this.data);};\
++proto.get=proto.set=function(){};\
++proto.pick=function(){return null};\
++return function construct_"+className+"(a){return new "+className+"(a);}"
++    var procedure = new Function(code)
++    return procedure()
++  } else if(dimension === 0) {
++    //Special case for 0d arrays
++    var code =
++      "function "+className+"(a,d) {\
++this.data = a;\
++this.offset = d\
++};\
++var proto="+className+".prototype;\
++proto.dtype='"+dtype+"';\
++proto.index=function(){return this.offset};\
++proto.dimension=0;\
++proto.size=1;\
++proto.shape=\
++proto.stride=\
++proto.order=[];\
++proto.lo=\
++proto.hi=\
++proto.transpose=\
++proto.step=function "+className+"_copy() {\
++return new "+className+"(this.data,this.offset)\
++};\
++proto.pick=function "+className+"_pick(){\
++return TrivialArray(this.data);\
++};\
++proto.valueOf=proto.get=function "+className+"_get(){\
++return "+(useGetters ? "this.data.get(this.offset)" : "this.data[this.offset]")+
++"};\
++proto.set=function "+className+"_set(v){\
++return "+(useGetters ? "this.data.set(this.offset,v)" : "this.data[this.offset]=v")+"\
++};\
++return function construct_"+className+"(a,b,c,d){return new "+className+"(a,d)}"
++    var procedure = new Function("TrivialArray", code)
++    return procedure(CACHED_CONSTRUCTORS[dtype][0])
++  }
++
++  var code = ["'use strict'"]
++
++  //Create constructor for view
++  var indices = iota(dimension)
++  var args = indices.map(function(i) { return "i"+i })
++  var index_str = "this.offset+" + indices.map(function(i) {
++        return "this.stride[" + i + "]*i" + i
++      }).join("+")
++  var shapeArg = indices.map(function(i) {
++      return "b"+i
++    }).join(",")
++  var strideArg = indices.map(function(i) {
++      return "c"+i
++    }).join(",")
++  code.push(
++    "function "+className+"(a," + shapeArg + "," + strideArg + ",d){this.data=a",
++      "this.shape=[" + shapeArg + "]",
++      "this.stride=[" + strideArg + "]",
++      "this.offset=d|0}",
++    "var proto="+className+".prototype",
++    "proto.dtype='"+dtype+"'",
++    "proto.dimension="+dimension)
++
++  //view.size:
++  code.push("Object.defineProperty(proto,'size',{get:function "+className+"_size(){\
++return "+indices.map(function(i) { return "this.shape["+i+"]" }).join("*"),
++"}})")
++
++  //view.order:
++  if(dimension === 1) {
++    code.push("proto.order=[0]")
++  } else {
++    code.push("Object.defineProperty(proto,'order',{get:")
++    if(dimension < 4) {
++      code.push("function "+className+"_order(){")
++      if(dimension === 2) {
++        code.push("return (Math.abs(this.stride[0])>Math.abs(this.stride[1]))?[1,0]:[0,1]}})")
++      } else if(dimension === 3) {
++        code.push(
++"var s0=Math.abs(this.stride[0]),s1=Math.abs(this.stride[1]),s2=Math.abs(this.stride[2]);\
++if(s0>s1){\
++if(s1>s2){\
++return [2,1,0];\
++}else if(s0>s2){\
++return [1,2,0];\
++}else{\
++return [1,0,2];\
++}\
++}else if(s0>s2){\
++return [2,0,1];\
++}else if(s2>s1){\
++return [0,1,2];\
++}else{\
++return [0,2,1];\
++}}})")
++      }
++    } else {
++      code.push("ORDER})")
+     }
+-  },
+-  "paint_circle": {
+-    "circle-radius": {
+-      "type": "number",
+-      "default": 5,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Circle radius."
+-    },
+-    "circle-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "doc": "The color of the circle.",
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "circle-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "doc": "Amount to blur the circle. 1 blurs the circle such that only the centerpoint is full opacity.",
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "circle-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the circle will be drawn.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "circle-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [0, 0],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."
+-    },
+-    "circle-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
+-      "default": "map",
+-      "requires": [
+-        "circle-translate"
+-      ]
++  }
++
++  //view.set(i0, ..., v):
++  code.push(
++"proto.set=function "+className+"_set("+args.join(",")+",v){")
++  if(useGetters) {
++    code.push("return this.data.set("+index_str+",v)}")
++  } else {
++    code.push("return this.data["+index_str+"]=v}")
++  }
++
++  //view.get(i0, ...):
++  code.push("proto.get=function "+className+"_get("+args.join(",")+"){")
++  if(useGetters) {
++    code.push("return this.data.get("+index_str+")}")
++  } else {
++    code.push("return this.data["+index_str+"]}")
++  }
++
++  //view.index:
++  code.push(
++    "proto.index=function "+className+"_index(", args.join(), "){return "+index_str+"}")
++
++  //view.hi():
++  code.push("proto.hi=function "+className+"_hi("+args.join(",")+"){return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return ["(typeof i",i,"!=='number'||i",i,"<0)?this.shape[", i, "]:i", i,"|0"].join("")
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "this.stride["+i + "]"
++    }).join(",")+",this.offset)}")
++
++  //view.lo():
++  var a_vars = indices.map(function(i) { return "a"+i+"=this.shape["+i+"]" })
++  var c_vars = indices.map(function(i) { return "c"+i+"=this.stride["+i+"]" })
++  code.push("proto.lo=function "+className+"_lo("+args.join(",")+"){var b=this.offset,d=0,"+a_vars.join(",")+","+c_vars.join(","))
++  for(var i=0; i<dimension; ++i) {
++    code.push(
++"if(typeof i"+i+"==='number'&&i"+i+">=0){\
++d=i"+i+"|0;\
++b+=c"+i+"*d;\
++a"+i+"-=d}")
++  }
++  code.push("return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return "a"+i
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "c"+i
++    }).join(",")+",b)}")
++
++  //view.step():
++  code.push("proto.step=function "+className+"_step("+args.join(",")+"){var "+
++    indices.map(function(i) {
++      return "a"+i+"=this.shape["+i+"]"
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "b"+i+"=this.stride["+i+"]"
++    }).join(",")+",c=this.offset,d=0,ceil=Math.ceil")
++  for(var i=0; i<dimension; ++i) {
++    code.push(
++"if(typeof i"+i+"==='number'){\
++d=i"+i+"|0;\
++if(d<0){\
++c+=b"+i+"*(a"+i+"-1);\
++a"+i+"=ceil(-a"+i+"/d)\
++}else{\
++a"+i+"=ceil(a"+i+"/d)\
++}\
++b"+i+"*=d\
++}")
++  }
++  code.push("return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return "a" + i
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "b" + i
++    }).join(",")+",c)}")
++
++  //view.transpose():
++  var tShape = new Array(dimension)
++  var tStride = new Array(dimension)
++  for(var i=0; i<dimension; ++i) {
++    tShape[i] = "a[i"+i+"]"
++    tStride[i] = "b[i"+i+"]"
++  }
++  code.push("proto.transpose=function "+className+"_transpose("+args+"){"+
++    args.map(function(n,idx) { return n + "=(" + n + "===undefined?" + idx + ":" + n + "|0)"}).join(";"),
++    "var a=this.shape,b=this.stride;return new "+className+"(this.data,"+tShape.join(",")+","+tStride.join(",")+",this.offset)}")
++
++  //view.pick():
++  code.push("proto.pick=function "+className+"_pick("+args+"){var a=[],b=[],c=this.offset")
++  for(var i=0; i<dimension; ++i) {
++    code.push("if(typeof i"+i+"==='number'&&i"+i+">=0){c=(c+this.stride["+i+"]*i"+i+")|0}else{a.push(this.shape["+i+"]);b.push(this.stride["+i+"])}")
++  }
++  code.push("var ctor=CTOR_LIST[a.length+1];return ctor(this.data,a,b,c)}")
++
++  //Add return statement
++  code.push("return function construct_"+className+"(data,shape,stride,offset){return new "+className+"(data,"+
++    indices.map(function(i) {
++      return "shape["+i+"]"
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "stride["+i+"]"
++    }).join(",")+",offset)}")
++
++  //Compile procedure
++  var procedure = new Function("CTOR_LIST", "ORDER", code.join("\n"))
++  return procedure(CACHED_CONSTRUCTORS[dtype], order)
++}
++
++function arrayDType(data) {
++  if(isBuffer(data)) {
++    return "buffer"
++  }
++  if(hasTypedArrays) {
++    switch(Object.prototype.toString.call(data)) {
++      case "[object Float64Array]":
++        return "float64"
++      case "[object Float32Array]":
++        return "float32"
++      case "[object Int8Array]":
++        return "int8"
++      case "[object Int16Array]":
++        return "int16"
++      case "[object Int32Array]":
++        return "int32"
++      case "[object Uint8Array]":
++        return "uint8"
++      case "[object Uint16Array]":
++        return "uint16"
++      case "[object Uint32Array]":
++        return "uint32"
++      case "[object Uint8ClampedArray]":
++        return "uint8_clamped"
+     }
+-  },
+-  "paint_symbol": {
+-    "icon-opacity": {
+-      "doc": "The opacity at which the icon will be drawn.",
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "function": "interpolated",
+-      "transition": true,
+-      "doc": "The color of the icon. This can only be used with sdf icons.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-halo-color": {
+-      "type": "color",
+-      "default": "rgba(0, 0, 0, 0)",
+-      "function": "interpolated",
+-      "transition": true,
+-      "doc": "The color of the icon's halo. Icon halos can only be used with sdf icons.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-halo-width": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance of halo to the icon outline.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-halo-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Fade out the halo towards the outside.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
+-      "default": "map",
+-      "requires": [
+-        "icon-image",
+-        "icon-translate"
+-      ]
+-    },
+-    "text-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the text will be drawn.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-color": {
+-      "type": "color",
+-      "doc": "The color with which the text will be drawn.",
+-      "default": "#000000",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-halo-color": {
+-      "type": "color",
+-      "default": "rgba(0, 0, 0, 0)",
+-      "function": "interpolated",
+-      "transition": true,
+-      "doc": "The color of the text's halo, which helps it stand out from backgrounds.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-halo-width": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance of halo to the font outline. Max text halo width is 1/4 of the font-size.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-halo-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The halo's fadeout distance towards the outside.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
+-      "default": "map",
+-      "requires": [
+-        "text-field",
+-        "text-translate"
+-      ]
++  }
++  if(Array.isArray(data)) {
++    return "array"
++  }
++  return "generic"
++}
++
++var CACHED_CONSTRUCTORS = {
++  "float32":[],
++  "float64":[],
++  "int8":[],
++  "int16":[],
++  "int32":[],
++  "uint8":[],
++  "uint16":[],
++  "uint32":[],
++  "array":[],
++  "uint8_clamped":[],
++  "buffer":[],
++  "generic":[]
++}
++
++;(function() {
++  for(var id in CACHED_CONSTRUCTORS) {
++    CACHED_CONSTRUCTORS[id].push(compileConstructor(id, -1))
++  }
++});
++
++function wrappedNDArrayCtor(data, shape, stride, offset) {
++  if(data === undefined) {
++    var ctor = CACHED_CONSTRUCTORS.array[0]
++    return ctor([])
++  } else if(typeof data === "number") {
++    data = [data]
++  }
++  if(shape === undefined) {
++    shape = [ data.length ]
++  }
++  var d = shape.length
++  if(stride === undefined) {
++    stride = new Array(d)
++    for(var i=d-1, sz=1; i>=0; --i) {
++      stride[i] = sz
++      sz *= shape[i]
+     }
+-  },
+-  "paint_raster": {
+-    "raster-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the image will be drawn.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "raster-hue-rotate": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "degrees",
+-      "doc": "Rotates hues around the color wheel."
+-    },
+-    "raster-brightness-min": {
+-      "type": "number",
+-      "function": "interpolated",
+-      "doc": "Increase or reduce the brightness of the image. The value is the minimum brightness.",
+-      "default": 0,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "transition": true
+-    },
+-    "raster-brightness-max": {
+-      "type": "number",
+-      "function": "interpolated",
+-      "doc": "Increase or reduce the brightness of the image. The value is the maximum brightness.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "transition": true
+-    },
+-    "raster-saturation": {
+-      "type": "number",
+-      "doc": "Increase or reduce the saturation of the image.",
+-      "default": 0,
+-      "minimum": -1,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "raster-contrast": {
+-      "type": "number",
+-      "doc": "Increase or reduce the contrast of the image.",
+-      "default": 0,
+-      "minimum": -1,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "raster-fade-duration": {
+-      "type": "number",
+-      "default": 300,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "milliseconds",
+-      "doc": "Fade duration when a new tile is added."
++  }
++  if(offset === undefined) {
++    offset = 0
++    for(var i=0; i<d; ++i) {
++      if(stride[i] < 0) {
++        offset -= (shape[i]-1)*stride[i]
++      }
++    }
++  }
++  var dtype = arrayDType(data)
++  var ctor_list = CACHED_CONSTRUCTORS[dtype]
++  while(ctor_list.length <= d+1) {
++    ctor_list.push(compileConstructor(dtype, ctor_list.length-1))
++  }
++  var ctor = ctor_list[d+1]
++  return ctor(data, shape, stride, offset)
++}
++
++module.exports = wrappedNDArrayCtor
++
++},{"iota-array":227,"is-buffer":228}],386:[function(require,module,exports){
++"use strict"
++
++var doubleBits = require("double-bits")
++
++var SMALLEST_DENORM = Math.pow(2, -1074)
++var UINT_MAX = (-1)>>>0
++
++module.exports = nextafter
++
++function nextafter(x, y) {
++  if(isNaN(x) || isNaN(y)) {
++    return NaN
++  }
++  if(x === y) {
++    return x
++  }
++  if(x === 0) {
++    if(y < 0) {
++      return -SMALLEST_DENORM
++    } else {
++      return SMALLEST_DENORM
+     }
+-  },
+-  "paint_background": {
+-    "background-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "doc": "The color with which the background will be drawn.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "background-pattern"
++  }
++  var hi = doubleBits.hi(x)
++  var lo = doubleBits.lo(x)
++  if((y > x) === (x > 0)) {
++    if(lo === UINT_MAX) {
++      hi += 1
++      lo = 0
++    } else {
++      lo += 1
++    }
++  } else {
++    if(lo === 0) {
++      lo = UINT_MAX
++      hi -= 1
++    } else {
++      lo -= 1
++    }
++  }
++  return doubleBits.pack(lo, hi)
++}
++},{"double-bits":92}],387:[function(require,module,exports){
++var DEFAULT_NORMALS_EPSILON = 1e-6;
++var DEFAULT_FACE_EPSILON = 1e-6;
++
++//Estimate the vertex normals of a mesh
++exports.vertexNormals = function(faces, positions, specifiedEpsilon) {
++
++  var N         = positions.length;
++  var normals   = new Array(N);
++  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_NORMALS_EPSILON : specifiedEpsilon;
++
++  //Initialize normal array
++  for(var i=0; i<N; ++i) {
++    normals[i] = [0.0, 0.0, 0.0];
++  }
++
++  //Walk over all the faces and add per-vertex contribution to normal weights
++  for(var i=0; i<faces.length; ++i) {
++    var f = faces[i];
++    var p = 0;
++    var c = f[f.length-1];
++    var n = f[0];
++    for(var j=0; j<f.length; ++j) {
++
++      //Shift indices back
++      p = c;
++      c = n;
++      n = f[(j+1) % f.length];
++
++      var v0 = positions[p];
++      var v1 = positions[c];
++      var v2 = positions[n];
++
++      //Compute infineteismal arcs
++      var d01 = new Array(3);
++      var m01 = 0.0;
++      var d21 = new Array(3);
++      var m21 = 0.0;
++      for(var k=0; k<3; ++k) {
++        d01[k] = v0[k]  - v1[k];
++        m01   += d01[k] * d01[k];
++        d21[k] = v2[k]  - v1[k];
++        m21   += d21[k] * d21[k];
++      }
++
++      //Accumulate values in normal
++      if(m01 * m21 > epsilon) {
++        var norm = normals[c];
++        var w = 1.0 / Math.sqrt(m01 * m21);
++        for(var k=0; k<3; ++k) {
++          var u = (k+1)%3;
++          var v = (k+2)%3;
++          norm[k] += w * (d21[u] * d01[v] - d21[v] * d01[u]);
+         }
+-      ]
+-    },
+-    "background-pattern": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "transition": true,
+-      "doc": "Name of image in sprite to use for drawing an image background. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512)."
+-    },
+-    "background-opacity": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "doc": "The opacity at which the background will be drawn.",
+-      "function": "interpolated",
+-      "transition": true
++      }
+     }
+-  },
+-  "transition": {
+-    "duration": {
+-      "type": "number",
+-      "default": 300,
+-      "minimum": 0,
+-      "units": "milliseconds",
+-      "doc": "Time allotted for transitions to complete."
+-    },
+-    "delay": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "units": "milliseconds",
+-      "doc": "Length of time before a transition begins."
++  }
++
++  //Scale all normals to unit length
++  for(var i=0; i<N; ++i) {
++    var norm = normals[i];
++    var m = 0.0;
++    for(var k=0; k<3; ++k) {
++      m += norm[k] * norm[k];
++    }
++    if(m > epsilon) {
++      var w = 1.0 / Math.sqrt(m);
++      for(var k=0; k<3; ++k) {
++        norm[k] *= w;
++      }
++    } else {
++      for(var k=0; k<3; ++k) {
++        norm[k] = 0.0;
++      }
+     }
+   }
++
++  //Return the resulting set of patches
++  return normals;
+ }
+ 
+-},{}],400:[function(require,module,exports){
+-module.exports={"$version":8,"$root":{"version":{"required":true,"type":"enum","values":[8]},"name":{"type":"string"},"metadata":{"type":"*"},"center":{"type":"array","value":"number"},"zoom":{"type":"number"},"bearing":{"type":"number","default":0,"period":360,"units":"degrees"},"pitch":{"type":"number","default":0,"units":"degrees"},"sources":{"required":true,"type":"sources"},"sprite":{"type":"string"},"glyphs":{"type":"string"},"transition":{"type":"transition"},"layers":{"required":true,"type":"array","value":"layer"}},"sources":{"*":{"type":"source"}},"source":["source_tile","source_geojson","source_video","source_image"],"source_tile":{"type":{"required":true,"type":"enum","values":["vector","raster"]},"url":{"type":"string"},"tiles":{"type":"array","value":"string"},"minzoom":{"type":"number","default":0},"maxzoom":{"type":"number","default":22},"tileSize":{"type":"number","default":512,"units":"pixels"},"*":{"type":"*"}},"source_geojson":{"type":{"required":true,"type":"enum","values":["geojson"]},"data":{"type":"*"},"maxzoom":{"type":"number","default":14},"buffer":{"type":"number","default":64},"tolerance":{"type":"number","default":3},"cluster":{"type":"boolean","default":false},"clusterRadius":{"type":"number","default":400},"clusterMaxZoom":{"type":"number"}},"source_video":{"type":{"required":true,"type":"enum","values":["video"]},"urls":{"required":true,"type":"array","value":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"source_image":{"type":{"required":true,"type":"enum","values":["image"]},"url":{"required":true,"type":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"layer":{"id":{"type":"string","required":true},"type":{"type":"enum","values":["fill","line","symbol","circle","raster","background"]},"metadata":{"type":"*"},"ref":{"type":"string"},"source":{"type":"string"},"source-layer":{"type":"string"},"minzoom":{"type":"number","minimum":0,"maximum":22},"maxzoom":{"type":"number","minimum":0,"maximum":22},"interactive":{"type":"boolean","default":false},"filter":{"type":"filter"},"layout":{"type":"layout"},"paint":{"type":"paint"},"paint.*":{"type":"paint"}},"layout":["layout_fill","layout_line","layout_circle","layout_symbol","layout_raster","layout_background"],"layout_background":{"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_fill":{"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_circle":{"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_line":{"line-cap":{"type":"enum","function":"piecewise-constant","values":["butt","round","square"],"default":"butt"},"line-join":{"type":"enum","function":"piecewise-constant","values":["bevel","round","miter"],"default":"miter"},"line-miter-limit":{"type":"number","default":2,"function":"interpolated","requires":[{"line-join":"miter"}]},"line-round-limit":{"type":"number","default":1.05,"function":"interpolated","requires":[{"line-join":"round"}]},"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_symbol":{"symbol-placement":{"type":"enum","function":"piecewise-constant","values":["point","line"],"default":"point"},"symbol-spacing":{"type":"number","default":250,"minimum":1,"function":"interpolated","units":"pixels","requires":[{"symbol-placement":"line"}]},"symbol-avoid-edges":{"type":"boolean","function":"piecewise-constant","default":false},"icon-allow-overlap":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image"]},"icon-ignore-placement":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image"]},"icon-optional":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image","text-field"]},"icon-rotation-alignment":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"viewport","requires":["icon-image"]},"icon-size":{"type":"number","default":1,"minimum":0,"function":"interpolated","requires":["icon-image"]},"icon-image":{"type":"string","function":"piecewise-constant","tokens":true},"icon-rotate":{"type":"number","default":0,"period":360,"function":"interpolated","units":"degrees","requires":["icon-image"]},"icon-padding":{"type":"number","default":2,"minimum":0,"function":"interpolated","units":"pixels","requires":["icon-image"]},"icon-keep-upright":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image",{"icon-rotation-alignment":"map"},{"symbol-placement":"line"}]},"icon-offset":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","requires":["icon-image"]},"text-rotation-alignment":{"type":"enum","function":"piecewise-con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function":"piecewise-constant","minimum":0,"transition":true,"units":"line 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0, 0, 0)","function":"interpolated","transition":true,"requires":["icon-image"]},"icon-halo-width":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels","requires":["icon-image"]},"icon-halo-blur":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels","requires":["icon-image"]},"icon-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","transition":true,"units":"pixels","requires":["icon-image"]},"icon-translate-anchor":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"map","requires":["icon-image","icon-translate"]},"text-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","transition":true,"requires":["text-field"]},"text-color":{"type":"color","default":"#000000","function":"interpolated","transition":true,"requires":["text-field"]},"text-halo-color":{"type":"color","default":"rgba(0, 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+-},{}],401:[function(require,module,exports){
+-'use strict';
++//Compute face normals of a mesh
++exports.faceNormals = function(faces, positions, specifiedEpsilon) {
+ 
+-// lightweight Buffer shim for pbf browser build
+-// based on code from github.com/feross/buffer (MIT-licensed)
++  var N         = faces.length;
++  var normals   = new Array(N);
++  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_FACE_EPSILON : specifiedEpsilon;
+ 
+-module.exports = Buffer;
++  for(var i=0; i<N; ++i) {
++    var f = faces[i];
++    var pos = new Array(3);
++    for(var j=0; j<3; ++j) {
++      pos[j] = positions[f[j]];
++    }
+ 
+-var ieee754 = require('ieee754');
++    var d01 = new Array(3);
++    var d21 = new Array(3);
++    for(var j=0; j<3; ++j) {
++      d01[j] = pos[1][j] - pos[0][j];
++      d21[j] = pos[2][j] - pos[0][j];
++    }
+ 
+-var BufferMethods;
++    var n = new Array(3);
++    var l = 0.0;
++    for(var j=0; j<3; ++j) {
++      var u = (j+1)%3;
++      var v = (j+2)%3;
++      n[j] = d01[u] * d21[v] - d01[v] * d21[u];
++      l += n[j] * n[j];
++    }
++    if(l > epsilon) {
++      l = 1.0 / Math.sqrt(l);
++    } else {
++      l = 0.0;
++    }
++    for(var j=0; j<3; ++j) {
++      n[j] *= l;
++    }
++    normals[i] = n;
++  }
++  return normals;
++}
+ 
+-function Buffer(length) {
+-    var arr;
+-    if (length && length.length) {
+-        arr = length;
+-        length = arr.length;
++
++
++},{}],388:[function(require,module,exports){
++'use strict'
++
++module.exports = quatFromFrame
++
++function quatFromFrame(
++  out,
++  rx, ry, rz,
++  ux, uy, uz,
++  fx, fy, fz) {
++  var tr = rx + uy + fz
++  if(l > 0) {
++    var l = Math.sqrt(tr + 1.0)
++    out[0] = 0.5 * (uz - fy) / l
++    out[1] = 0.5 * (fx - rz) / l
++    out[2] = 0.5 * (ry - uy) / l
++    out[3] = 0.5 * l
++  } else {
++    var tf = Math.max(rx, uy, fz)
++    var l = Math.sqrt(2 * tf - tr + 1.0)
++    if(rx >= tf) {
++      //x y z  order
++      out[0] = 0.5 * l
++      out[1] = 0.5 * (ux + ry) / l
++      out[2] = 0.5 * (fx + rz) / l
++      out[3] = 0.5 * (uz - fy) / l
++    } else if(uy >= tf) {
++      //y z x  order
++      out[0] = 0.5 * (ry + ux) / l
++      out[1] = 0.5 * l
++      out[2] = 0.5 * (fy + uz) / l
++      out[3] = 0.5 * (fx - rz) / l
++    } else {
++      //z x y  order
++      out[0] = 0.5 * (rz + fx) / l
++      out[1] = 0.5 * (uz + fy) / l
++      out[2] = 0.5 * l
++      out[3] = 0.5 * (ry - ux) / l
+     }
+-    var buf = new Uint8Array(length || 0);
+-    if (arr) buf.set(arr);
++  }
++  return out
++}
++},{}],389:[function(require,module,exports){
++'use strict'
+ 
+-    buf.readUInt32LE = BufferMethods.readUInt32LE;
+-    buf.writeUInt32LE = BufferMethods.writeUInt32LE;
+-    buf.readInt32LE = BufferMethods.readInt32LE;
+-    buf.writeInt32LE = BufferMethods.writeInt32LE;
+-    buf.readFloatLE = BufferMethods.readFloatLE;
+-    buf.writeFloatLE = BufferMethods.writeFloatLE;
+-    buf.readDoubleLE = BufferMethods.readDoubleLE;
+-    buf.writeDoubleLE = BufferMethods.writeDoubleLE;
+-    buf.toString = BufferMethods.toString;
+-    buf.write = BufferMethods.write;
+-    buf.slice = BufferMethods.slice;
+-    buf.copy = BufferMethods.copy;
++module.exports = createOrbitController
+ 
+-    buf._isBuffer = true;
+-    return buf;
++var filterVector  = require('filtered-vector')
++var lookAt        = require('gl-mat4/lookAt')
++var mat4FromQuat  = require('gl-mat4/fromQuat')
++var invert44      = require('gl-mat4/invert')
++var quatFromFrame = require('./lib/quatFromFrame')
++
++function len3(x,y,z) {
++  return Math.sqrt(Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
+ }
+ 
+-var lastStr, lastStrEncoded;
++function len4(w,x,y,z) {
++  return Math.sqrt(Math.pow(w,2) + Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
++}
+ 
+-BufferMethods = {
+-    readUInt32LE: function(pos) {
+-        return ((this[pos]) |
+-            (this[pos + 1] << 8) |
+-            (this[pos + 2] << 16)) +
+-            (this[pos + 3] * 0x1000000);
+-    },
++function normalize4(out, a) {
++  var ax = a[0]
++  var ay = a[1]
++  var az = a[2]
++  var aw = a[3]
++  var al = len4(ax, ay, az, aw)
++  if(al > 1e-6) {
++    out[0] = ax/al
++    out[1] = ay/al
++    out[2] = az/al
++    out[3] = aw/al
++  } else {
++    out[0] = out[1] = out[2] = 0.0
++    out[3] = 1.0
++  }
++}
+ 
+-    writeUInt32LE: function(val, pos) {
+-        this[pos] = val;
+-        this[pos + 1] = (val >>> 8);
+-        this[pos + 2] = (val >>> 16);
+-        this[pos + 3] = (val >>> 24);
+-    },
++function OrbitCameraController(initQuat, initCenter, initRadius) {
++  this.radius    = filterVector([initRadius])
++  this.center    = filterVector(initCenter)
++  this.rotation  = filterVector(initQuat)
+ 
+-    readInt32LE: function(pos) {
+-        return ((this[pos]) |
+-            (this[pos + 1] << 8) |
+-            (this[pos + 2] << 16)) +
+-            (this[pos + 3] << 24);
+-    },
++  this.computedRadius   = this.radius.curve(0)
++  this.computedCenter   = this.center.curve(0)
++  this.computedRotation = this.rotation.curve(0)
++  this.computedUp       = [0.1,0,0]
++  this.computedEye      = [0.1,0,0]
++  this.computedMatrix   = [0.1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+ 
+-    readFloatLE:  function(pos) { return ieee754.read(this, pos, true, 23, 4); },
+-    readDoubleLE: function(pos) { return ieee754.read(this, pos, true, 52, 8); },
++  this.recalcMatrix(0)
++}
+ 
+-    writeFloatLE:  function(val, pos) { return ieee754.write(this, val, pos, true, 23, 4); },
+-    writeDoubleLE: function(val, pos) { return ieee754.write(this, val, pos, true, 52, 8); },
++var proto = OrbitCameraController.prototype
+ 
+-    toString: function(encoding, start, end) {
+-        var str = '',
+-            tmp = '';
++proto.lastT = function() {
++  return Math.max(
++    this.radius.lastT(),
++    this.center.lastT(),
++    this.rotation.lastT())
++}
+ 
+-        start = start || 0;
+-        end = Math.min(this.length, end || this.length);
++proto.recalcMatrix = function(t) {
++  this.radius.curve(t)
++  this.center.curve(t)
++  this.rotation.curve(t)
+ 
+-        for (var i = start; i < end; i++) {
+-            var ch = this[i];
+-            if (ch <= 0x7F) {
+-                str += decodeURIComponent(tmp) + String.fromCharCode(ch);
+-                tmp = '';
+-            } else {
+-                tmp += '%' + ch.toString(16);
+-            }
+-        }
++  var quat = this.computedRotation
++  normalize4(quat, quat)
+ 
+-        str += decodeURIComponent(tmp);
++  var mat = this.computedMatrix
++  mat4FromQuat(mat, quat)
+ 
+-        return str;
+-    },
++  var center = this.computedCenter
++  var eye    = this.computedEye
++  var up     = this.computedUp
++  var radius = Math.exp(this.computedRadius[0])
+ 
+-    write: function(str, pos) {
+-        var bytes = str === lastStr ? lastStrEncoded : encodeString(str);
+-        for (var i = 0; i < bytes.length; i++) {
+-            this[pos + i] = bytes[i];
+-        }
+-    },
++  eye[0] = center[0] + radius * mat[2]
++  eye[1] = center[1] + radius * mat[6]
++  eye[2] = center[2] + radius * mat[10]
++  up[0] = mat[1]
++  up[1] = mat[5]
++  up[2] = mat[9]
+ 
+-    slice: function(start, end) {
+-        return this.subarray(start, end);
+-    },
++  for(var i=0; i<3; ++i) {
++    var rr = 0.0
++    for(var j=0; j<3; ++j) {
++      rr += mat[i+4*j] * eye[j]
++    }
++    mat[12+i] = -rr
++  }
++}
+ 
+-    copy: function(buf, pos) {
+-        pos = pos || 0;
+-        for (var i = 0; i < this.length; i++) {
+-            buf[pos + i] = this[i];
+-        }
++proto.getMatrix = function(t, result) {
++  this.recalcMatrix(t)
++  var m = this.computedMatrix
++  if(result) {
++    for(var i=0; i<16; ++i) {
++      result[i] = m[i]
+     }
+-};
++    return result
++  }
++  return m
++}
+ 
+-BufferMethods.writeInt32LE = BufferMethods.writeUInt32LE;
++proto.idle = function(t) {
++  this.center.idle(t)
++  this.radius.idle(t)
++  this.rotation.idle(t)
++}
+ 
+-Buffer.byteLength = function(str) {
+-    lastStr = str;
+-    lastStrEncoded = encodeString(str);
+-    return lastStrEncoded.length;
+-};
++proto.flush = function(t) {
++  this.center.flush(t)
++  this.radius.flush(t)
++  this.rotation.flush(t)
++}
+ 
+-Buffer.isBuffer = function(buf) {
+-    return !!(buf && buf._isBuffer);
+-};
++proto.pan = function(t, dx, dy, dz) {
++  dx = dx || 0.0
++  dy = dy || 0.0
++  dz = dz || 0.0
+ 
+-function encodeString(str) {
+-    var length = str.length,
+-        bytes = [];
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
+ 
+-    for (var i = 0, c, lead; i < length; i++) {
+-        c = str.charCodeAt(i); // code point
++  var ux = mat[1]
++  var uy = mat[5]
++  var uz = mat[9]
++  var ul = len3(ux, uy, uz)
++  ux /= ul
++  uy /= ul
++  uz /= ul
+ 
+-        if (c > 0xD7FF && c < 0xE000) {
++  var rx = mat[0]
++  var ry = mat[4]
++  var rz = mat[8]
++  var ru = rx * ux + ry * uy + rz * uz
++  rx -= ux * ru
++  ry -= uy * ru
++  rz -= uz * ru
++  var rl = len3(rx, ry, rz)
++  rx /= rl
++  ry /= rl
++  rz /= rl
+ 
+-            if (lead) {
+-                if (c < 0xDC00) {
+-                    bytes.push(0xEF, 0xBF, 0xBD);
+-                    lead = c;
+-                    continue;
++  var fx = mat[2]
++  var fy = mat[6]
++  var fz = mat[10]
++  var fu = fx * ux + fy * uy + fz * uz
++  var fr = fx * rx + fy * ry + fz * rz
++  fx -= fu * ux + fr * rx
++  fy -= fu * uy + fr * ry
++  fz -= fu * uz + fr * rz
++  var fl = len3(fx, fy, fz)
++  fx /= fl
++  fy /= fl
++  fz /= fl
+ 
+-                } else {
+-                    c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;
+-                    lead = null;
+-                }
++  var vx = rx * dx + ux * dy
++  var vy = ry * dx + uy * dy
++  var vz = rz * dx + uz * dy
+ 
+-            } else {
+-                if (c > 0xDBFF || (i + 1 === length)) bytes.push(0xEF, 0xBF, 0xBD);
+-                else lead = c;
++  this.center.move(t, vx, vy, vz)
+ 
+-                continue;
+-            }
++  //Update z-component of radius
++  var radius = Math.exp(this.computedRadius[0])
++  radius = Math.max(1e-4, radius + dz)
++  this.radius.set(t, Math.log(radius))
++}
+ 
+-        } else if (lead) {
+-            bytes.push(0xEF, 0xBF, 0xBD);
+-            lead = null;
+-        }
++proto.rotate = function(t, dx, dy, dz) {
++  this.recalcMatrix(t)
++
++  dx = dx||0.0
++  dy = dy||0.0
++
++  var mat = this.computedMatrix
++
++  var rx = mat[0]
++  var ry = mat[4]
++  var rz = mat[8]
++
++  var ux = mat[1]
++  var uy = mat[5]
++  var uz = mat[9]
++
++  var fx = mat[2]
++  var fy = mat[6]
++  var fz = mat[10]
++
++  var qx = dx * rx + dy * ux
++  var qy = dx * ry + dy * uy
++  var qz = dx * rz + dy * uz
+ 
+-        if (c < 0x80) bytes.push(c);
+-        else if (c < 0x800) bytes.push(c >> 0x6 | 0xC0, c & 0x3F | 0x80);
+-        else if (c < 0x10000) bytes.push(c >> 0xC | 0xE0, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
+-        else bytes.push(c >> 0x12 | 0xF0, c >> 0xC & 0x3F | 0x80, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
+-    }
+-    return bytes;
+-}
++  var bx = -(fy * qz - fz * qy)
++  var by = -(fz * qx - fx * qz)
++  var bz = -(fx * qy - fy * qx)  
++  var bw = Math.sqrt(Math.max(0.0, 1.0 - Math.pow(bx,2) - Math.pow(by,2) - Math.pow(bz,2)))
++  var bl = len4(bx, by, bz, bw)
++  if(bl > 1e-6) {
++    bx /= bl
++    by /= bl
++    bz /= bl
++    bw /= bl
++  } else {
++    bx = by = bz = 0.0
++    bw = 1.0
++  }
+ 
+-},{"ieee754":403}],402:[function(require,module,exports){
+-(function (global){
+-'use strict';
++  var rotation = this.computedRotation
++  var ax = rotation[0]
++  var ay = rotation[1]
++  var az = rotation[2]
++  var aw = rotation[3]
+ 
+-module.exports = Pbf;
++  var cx = ax*bw + aw*bx + ay*bz - az*by
++  var cy = ay*bw + aw*by + az*bx - ax*bz
++  var cz = az*bw + aw*bz + ax*by - ay*bx
++  var cw = aw*bw - ax*bx - ay*by - az*bz
++  
++  //Apply roll
++  if(dz) {
++    bx = fx
++    by = fy
++    bz = fz
++    var s = Math.sin(dz) / len3(bx, by, bz)
++    bx *= s
++    by *= s
++    bz *= s
++    bw = Math.cos(dx)
++    cx = cx*bw + cw*bx + cy*bz - cz*by
++    cy = cy*bw + cw*by + cz*bx - cx*bz
++    cz = cz*bw + cw*bz + cx*by - cy*bx
++    cw = cw*bw - cx*bx - cy*by - cz*bz
++  }
+ 
+-var Buffer = global.Buffer || require('./buffer');
++  var cl = len4(cx, cy, cz, cw)
++  if(cl > 1e-6) {
++    cx /= cl
++    cy /= cl
++    cz /= cl
++    cw /= cl
++  } else {
++    cx = cy = cz = 0.0
++    cw = 1.0
++  }
+ 
+-function Pbf(buf) {
+-    this.buf = !Buffer.isBuffer(buf) ? new Buffer(buf || 0) : buf;
+-    this.pos = 0;
+-    this.length = this.buf.length;
++  this.rotation.set(t, cx, cy, cz, cw)
+ }
+ 
+-Pbf.Varint  = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum
+-Pbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64
+-Pbf.Bytes   = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields
+-Pbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32
+-
+-var SHIFT_LEFT_32 = (1 << 16) * (1 << 16),
+-    SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32,
+-    POW_2_63 = Math.pow(2, 63);
++proto.lookAt = function(t, eye, center, up) {
++  this.recalcMatrix(t)
+ 
+-Pbf.prototype = {
++  center = center || this.computedCenter
++  eye    = eye    || this.computedEye
++  up     = up     || this.computedUp
+ 
+-    destroy: function() {
+-        this.buf = null;
+-    },
++  var mat = this.computedMatrix
++  lookAt(mat, eye, center, up)
+ 
+-    // === READING =================================================================
++  var rotation = this.computedRotation
++  quatFromFrame(rotation,
++    mat[0], mat[1], mat[2],
++    mat[4], mat[5], mat[6],
++    mat[8], mat[9], mat[10])
++  normalize4(rotation, rotation)
++  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
+ 
+-    readFields: function(readField, result, end) {
+-        end = end || this.length;
++  var fl = 0.0
++  for(var i=0; i<3; ++i) {
++    fl += Math.pow(center[i] - eye[i], 2)
++  }
++  this.radius.set(t, 0.5 * Math.log(Math.max(fl, 1e-6)))
+ 
+-        while (this.pos < end) {
+-            var val = this.readVarint(),
+-                tag = val >> 3,
+-                startPos = this.pos;
++  this.center.set(t, center[0], center[1], center[2])
++}
+ 
+-            readField(tag, result, this);
++proto.translate = function(t, dx, dy, dz) {
++  this.center.move(t,
++    dx||0.0,
++    dy||0.0,
++    dz||0.0)
++}
+ 
+-            if (this.pos === startPos) this.skip(val);
+-        }
+-        return result;
+-    },
++proto.setMatrix = function(t, matrix) {
+ 
+-    readMessage: function(readField, result) {
+-        return this.readFields(readField, result, this.readVarint() + this.pos);
+-    },
++  var rotation = this.computedRotation
++  quatFromFrame(rotation,
++    matrix[0], matrix[1], matrix[2],
++    matrix[4], matrix[5], matrix[6],
++    matrix[8], matrix[9], matrix[10])
++  normalize4(rotation, rotation)
++  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
+ 
+-    readFixed32: function() {
+-        var val = this.buf.readUInt32LE(this.pos);
+-        this.pos += 4;
+-        return val;
+-    },
++  var mat = this.computedMatrix
++  invert44(mat, matrix)
++  var w = mat[15]
++  if(Math.abs(w) > 1e-6) {
++    var cx = mat[12]/w
++    var cy = mat[13]/w
++    var cz = mat[14]/w
+ 
+-    readSFixed32: function() {
+-        var val = this.buf.readInt32LE(this.pos);
+-        this.pos += 4;
+-        return val;
+-    },
++    this.recalcMatrix(t)  
++    var r = Math.exp(this.computedRadius[0])
++    this.center.set(t, cx-mat[2]*r, cy-mat[6]*r, cz-mat[10]*r)
++    this.radius.idle(t)
++  } else {
++    this.center.idle(t)
++    this.radius.idle(t)
++  }
++}
+ 
+-    // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)
++proto.setDistance = function(t, d) {
++  if(d > 0) {
++    this.radius.set(t, Math.log(d))
++  }
++}
+ 
+-    readFixed64: function() {
+-        var val = this.buf.readUInt32LE(this.pos) + this.buf.readUInt32LE(this.pos + 4) * SHIFT_LEFT_32;
+-        this.pos += 8;
+-        return val;
+-    },
++proto.setDistanceLimits = function(lo, hi) {
++  if(lo > 0) {
++    lo = Math.log(lo)
++  } else {
++    lo = -Infinity    
++  }
++  if(hi > 0) {
++    hi = Math.log(hi)
++  } else {
++    hi = Infinity
++  }
++  hi = Math.max(hi, lo)
++  this.radius.bounds[0][0] = lo
++  this.radius.bounds[1][0] = hi
++}
+ 
+-    readSFixed64: function() {
+-        var val = this.buf.readUInt32LE(this.pos) + this.buf.readInt32LE(this.pos + 4) * SHIFT_LEFT_32;
+-        this.pos += 8;
+-        return val;
+-    },
++proto.getDistanceLimits = function(out) {
++  var bounds = this.radius.bounds
++  if(out) {
++    out[0] = Math.exp(bounds[0][0])
++    out[1] = Math.exp(bounds[1][0])
++    return out
++  }
++  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
++}
+ 
+-    readFloat: function() {
+-        var val = this.buf.readFloatLE(this.pos);
+-        this.pos += 4;
+-        return val;
+-    },
++proto.toJSON = function() {
++  this.recalcMatrix(this.lastT())
++  return {
++    center:   this.computedCenter.slice(),
++    rotation: this.computedRotation.slice(),
++    distance: Math.log(this.computedRadius[0]),
++    zoomMin:  this.radius.bounds[0][0],
++    zoomMax:  this.radius.bounds[1][0]
++  }
++}
+ 
+-    readDouble: function() {
+-        var val = this.buf.readDoubleLE(this.pos);
+-        this.pos += 8;
+-        return val;
+-    },
++proto.fromJSON = function(options) {
++  var t = this.lastT()
++  var c = options.center
++  if(c) {
++    this.center.set(t, c[0], c[1], c[2])
++  }
++  var r = options.rotation
++  if(r) {
++    this.rotation.set(t, r[0], r[1], r[2], r[3])
++  }
++  var d = options.distance
++  if(d && d > 0) {
++    this.radius.set(t, Math.log(d))
++  }
++  this.setDistanceLimits(options.zoomMin, options.zoomMax)
++}
+ 
+-    readVarint: function() {
+-        var buf = this.buf,
+-            val, b;
++function createOrbitController(options) {
++  options = options || {}
++  var center   = options.center   || [0,0,0]
++  var rotation = options.rotation || [0,0,0,1]
++  var radius   = options.radius   || 1.0
+ 
+-        b = buf[this.pos++]; val  =  b & 0x7f;        if (b < 0x80) return val;
+-        b = buf[this.pos++]; val |= (b & 0x7f) << 7;  if (b < 0x80) return val;
+-        b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;
+-        b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;
++  center = [].slice.call(center, 0, 3)
++  rotation = [].slice.call(rotation, 0, 4)
++  normalize4(rotation, rotation)
+ 
+-        return readVarintRemainder(val, this);
+-    },
++  var result = new OrbitCameraController(
++    rotation,
++    center,
++    Math.log(radius))
+ 
+-    readVarint64: function() {
+-        var startPos = this.pos,
+-            val = this.readVarint();
++  result.setDistanceLimits(options.zoomMin, options.zoomMax)
+ 
+-        if (val < POW_2_63) return val;
++  if('eye' in options || 'up' in options) {
++    result.lookAt(0, options.eye, options.center, options.up)
++  }
+ 
+-        var pos = this.pos - 2;
+-        while (this.buf[pos] === 0xff) pos--;
+-        if (pos < startPos) pos = startPos;
++  return result
++}
++},{"./lib/quatFromFrame":388,"filtered-vector":100,"gl-mat4/fromQuat":139,"gl-mat4/invert":142,"gl-mat4/lookAt":143}],390:[function(require,module,exports){
++/*!
++ * pad-left <https://github.com/jonschlinkert/pad-left>
++ *
++ * Copyright (c) 2014-2015, Jon Schlinkert.
++ * Licensed under the MIT license.
++ */
+ 
+-        val = 0;
+-        for (var i = 0; i < pos - startPos + 1; i++) {
+-            var b = ~this.buf[startPos + i] & 0x7f;
+-            val += i < 4 ? b << i * 7 : b * Math.pow(2, i * 7);
+-        }
++'use strict';
+ 
+-        return -val - 1;
+-    },
++var repeat = require('repeat-string');
+ 
+-    readSVarint: function() {
+-        var num = this.readVarint();
+-        return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding
+-    },
++module.exports = function padLeft(str, num, ch) {
++  ch = typeof ch !== 'undefined' ? (ch + '') : ' ';
++  return repeat(ch, num) + str;
++};
++},{"repeat-string":410}],391:[function(require,module,exports){
++module.exports = function parseUnit(str, out) {
++    if (!out)
++        out = [ 0, '' ]
+ 
+-    readBoolean: function() {
+-        return Boolean(this.readVarint());
+-    },
++    str = String(str)
++    var num = parseFloat(str, 10)
++    out[0] = num
++    out[1] = str.match(/[\d.\-\+]*\s*(.*)/)[1] || ''
++    return out
++}
++},{}],392:[function(require,module,exports){
++(function (process){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-    readString: function() {
+-        var end = this.readVarint() + this.pos,
+-            str = this.buf.toString('utf8', this.pos, end);
+-        this.pos = end;
+-        return str;
+-    },
++// resolves . and .. elements in a path array with directory names there
++// must be no slashes, empty elements, or device names (c:\) in the array
++// (so also no leading and trailing slashes - it does not distinguish
++// relative and absolute paths)
++function normalizeArray(parts, allowAboveRoot) {
++  // if the path tries to go above the root, `up` ends up > 0
++  var up = 0;
++  for (var i = parts.length - 1; i >= 0; i--) {
++    var last = parts[i];
++    if (last === '.') {
++      parts.splice(i, 1);
++    } else if (last === '..') {
++      parts.splice(i, 1);
++      up++;
++    } else if (up) {
++      parts.splice(i, 1);
++      up--;
++    }
++  }
+ 
+-    readBytes: function() {
+-        var end = this.readVarint() + this.pos,
+-            buffer = this.buf.slice(this.pos, end);
+-        this.pos = end;
+-        return buffer;
+-    },
++  // if the path is allowed to go above the root, restore leading ..s
++  if (allowAboveRoot) {
++    for (; up--; up) {
++      parts.unshift('..');
++    }
++  }
+ 
+-    // verbose for performance reasons; doesn't affect gzipped size
++  return parts;
++}
+ 
+-    readPackedVarint: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readVarint());
+-        return arr;
+-    },
+-    readPackedSVarint: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readSVarint());
+-        return arr;
+-    },
+-    readPackedBoolean: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readBoolean());
+-        return arr;
+-    },
+-    readPackedFloat: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readFloat());
+-        return arr;
+-    },
+-    readPackedDouble: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readDouble());
+-        return arr;
+-    },
+-    readPackedFixed32: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readFixed32());
+-        return arr;
+-    },
+-    readPackedSFixed32: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readSFixed32());
+-        return arr;
+-    },
+-    readPackedFixed64: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readFixed64());
+-        return arr;
+-    },
+-    readPackedSFixed64: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readSFixed64());
+-        return arr;
+-    },
++// Split a filename into [root, dir, basename, ext], unix version
++// 'root' is just a slash, or nothing.
++var splitPathRe =
++    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
++var splitPath = function(filename) {
++  return splitPathRe.exec(filename).slice(1);
++};
+ 
+-    skip: function(val) {
+-        var type = val & 0x7;
+-        if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}
+-        else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;
+-        else if (type === Pbf.Fixed32) this.pos += 4;
+-        else if (type === Pbf.Fixed64) this.pos += 8;
+-        else throw new Error('Unimplemented type: ' + type);
+-    },
++// path.resolve([from ...], to)
++// posix version
++exports.resolve = function() {
++  var resolvedPath = '',
++      resolvedAbsolute = false;
+ 
+-    // === WRITING =================================================================
++  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
++    var path = (i >= 0) ? arguments[i] : process.cwd();
+ 
+-    writeTag: function(tag, type) {
+-        this.writeVarint((tag << 3) | type);
+-    },
++    // Skip empty and invalid entries
++    if (typeof path !== 'string') {
++      throw new TypeError('Arguments to path.resolve must be strings');
++    } else if (!path) {
++      continue;
++    }
+ 
+-    realloc: function(min) {
+-        var length = this.length || 16;
++    resolvedPath = path + '/' + resolvedPath;
++    resolvedAbsolute = path.charAt(0) === '/';
++  }
+ 
+-        while (length < this.pos + min) length *= 2;
++  // At this point the path should be resolved to a full absolute path, but
++  // handle relative paths to be safe (might happen when process.cwd() fails)
+ 
+-        if (length !== this.length) {
+-            var buf = new Buffer(length);
+-            this.buf.copy(buf);
+-            this.buf = buf;
+-            this.length = length;
+-        }
+-    },
++  // Normalize the path
++  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
++    return !!p;
++  }), !resolvedAbsolute).join('/');
+ 
+-    finish: function() {
+-        this.length = this.pos;
+-        this.pos = 0;
+-        return this.buf.slice(0, this.length);
+-    },
++  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
++};
+ 
+-    writeFixed32: function(val) {
+-        this.realloc(4);
+-        this.buf.writeUInt32LE(val, this.pos);
+-        this.pos += 4;
+-    },
++// path.normalize(path)
++// posix version
++exports.normalize = function(path) {
++  var isAbsolute = exports.isAbsolute(path),
++      trailingSlash = substr(path, -1) === '/';
+ 
+-    writeSFixed32: function(val) {
+-        this.realloc(4);
+-        this.buf.writeInt32LE(val, this.pos);
+-        this.pos += 4;
+-    },
++  // Normalize the path
++  path = normalizeArray(filter(path.split('/'), function(p) {
++    return !!p;
++  }), !isAbsolute).join('/');
+ 
+-    writeFixed64: function(val) {
+-        this.realloc(8);
+-        this.buf.writeInt32LE(val & -1, this.pos);
+-        this.buf.writeUInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
+-        this.pos += 8;
+-    },
++  if (!path && !isAbsolute) {
++    path = '.';
++  }
++  if (path && trailingSlash) {
++    path += '/';
++  }
+ 
+-    writeSFixed64: function(val) {
+-        this.realloc(8);
+-        this.buf.writeInt32LE(val & -1, this.pos);
+-        this.buf.writeInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
+-        this.pos += 8;
+-    },
++  return (isAbsolute ? '/' : '') + path;
++};
+ 
+-    writeVarint: function(val) {
+-        val = +val;
++// posix version
++exports.isAbsolute = function(path) {
++  return path.charAt(0) === '/';
++};
+ 
+-        if (val > 0xfffffff) {
+-            writeBigVarint(val, this);
+-            return;
+-        }
++// posix version
++exports.join = function() {
++  var paths = Array.prototype.slice.call(arguments, 0);
++  return exports.normalize(filter(paths, function(p, index) {
++    if (typeof p !== 'string') {
++      throw new TypeError('Arguments to path.join must be strings');
++    }
++    return p;
++  }).join('/'));
++};
+ 
+-        this.realloc(4);
+ 
+-        this.buf[this.pos++] =           val & 0x7f  | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+-        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+-        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+-        this.buf[this.pos++] =   (val >>> 7) & 0x7f;
+-    },
++// path.relative(from, to)
++// posix version
++exports.relative = function(from, to) {
++  from = exports.resolve(from).substr(1);
++  to = exports.resolve(to).substr(1);
+ 
+-    writeSVarint: function(val) {
+-        this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);
+-    },
++  function trim(arr) {
++    var start = 0;
++    for (; start < arr.length; start++) {
++      if (arr[start] !== '') break;
++    }
+ 
+-    writeBoolean: function(val) {
+-        this.writeVarint(Boolean(val));
+-    },
++    var end = arr.length - 1;
++    for (; end >= 0; end--) {
++      if (arr[end] !== '') break;
++    }
+ 
+-    writeString: function(str) {
+-        str = String(str);
+-        var bytes = Buffer.byteLength(str);
+-        this.writeVarint(bytes);
+-        this.realloc(bytes);
+-        this.buf.write(str, this.pos);
+-        this.pos += bytes;
+-    },
++    if (start > end) return [];
++    return arr.slice(start, end - start + 1);
++  }
+ 
+-    writeFloat: function(val) {
+-        this.realloc(4);
+-        this.buf.writeFloatLE(val, this.pos);
+-        this.pos += 4;
+-    },
++  var fromParts = trim(from.split('/'));
++  var toParts = trim(to.split('/'));
+ 
+-    writeDouble: function(val) {
+-        this.realloc(8);
+-        this.buf.writeDoubleLE(val, this.pos);
+-        this.pos += 8;
+-    },
++  var length = Math.min(fromParts.length, toParts.length);
++  var samePartsLength = length;
++  for (var i = 0; i < length; i++) {
++    if (fromParts[i] !== toParts[i]) {
++      samePartsLength = i;
++      break;
++    }
++  }
+ 
+-    writeBytes: function(buffer) {
+-        var len = buffer.length;
+-        this.writeVarint(len);
+-        this.realloc(len);
+-        for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];
+-    },
++  var outputParts = [];
++  for (var i = samePartsLength; i < fromParts.length; i++) {
++    outputParts.push('..');
++  }
+ 
+-    writeRawMessage: function(fn, obj) {
+-        this.pos++; // reserve 1 byte for short message length
++  outputParts = outputParts.concat(toParts.slice(samePartsLength));
+ 
+-        // write the message directly to the buffer and see how much was written
+-        var startPos = this.pos;
+-        fn(obj, this);
+-        var len = this.pos - startPos;
++  return outputParts.join('/');
++};
+ 
+-        if (len >= 0x80) reallocForRawMessage(startPos, len, this);
++exports.sep = '/';
++exports.delimiter = ':';
+ 
+-        // finally, write the message length in the reserved place and restore the position
+-        this.pos = startPos - 1;
+-        this.writeVarint(len);
+-        this.pos += len;
+-    },
++exports.dirname = function(path) {
++  var result = splitPath(path),
++      root = result[0],
++      dir = result[1];
+ 
+-    writeMessage: function(tag, fn, obj) {
+-        this.writeTag(tag, Pbf.Bytes);
+-        this.writeRawMessage(fn, obj);
+-    },
++  if (!root && !dir) {
++    // No dirname whatsoever
++    return '.';
++  }
+ 
+-    writePackedVarint:   function(tag, arr) { this.writeMessage(tag, writePackedVarint, arr);   },
+-    writePackedSVarint:  function(tag, arr) { this.writeMessage(tag, writePackedSVarint, arr);  },
+-    writePackedBoolean:  function(tag, arr) { this.writeMessage(tag, writePackedBoolean, arr);  },
+-    writePackedFloat:    function(tag, arr) { this.writeMessage(tag, writePackedFloat, arr);    },
+-    writePackedDouble:   function(tag, arr) { this.writeMessage(tag, writePackedDouble, arr);   },
+-    writePackedFixed32:  function(tag, arr) { this.writeMessage(tag, writePackedFixed32, arr);  },
+-    writePackedSFixed32: function(tag, arr) { this.writeMessage(tag, writePackedSFixed32, arr); },
+-    writePackedFixed64:  function(tag, arr) { this.writeMessage(tag, writePackedFixed64, arr);  },
+-    writePackedSFixed64: function(tag, arr) { this.writeMessage(tag, writePackedSFixed64, arr); },
++  if (dir) {
++    // It has a dirname, strip trailing slash
++    dir = dir.substr(0, dir.length - 1);
++  }
+ 
+-    writeBytesField: function(tag, buffer) {
+-        this.writeTag(tag, Pbf.Bytes);
+-        this.writeBytes(buffer);
+-    },
+-    writeFixed32Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed32);
+-        this.writeFixed32(val);
+-    },
+-    writeSFixed32Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed32);
+-        this.writeSFixed32(val);
+-    },
+-    writeFixed64Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed64);
+-        this.writeFixed64(val);
+-    },
+-    writeSFixed64Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed64);
+-        this.writeSFixed64(val);
+-    },
+-    writeVarintField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Varint);
+-        this.writeVarint(val);
+-    },
+-    writeSVarintField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Varint);
+-        this.writeSVarint(val);
+-    },
+-    writeStringField: function(tag, str) {
+-        this.writeTag(tag, Pbf.Bytes);
+-        this.writeString(str);
+-    },
+-    writeFloatField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed32);
+-        this.writeFloat(val);
+-    },
+-    writeDoubleField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed64);
+-        this.writeDouble(val);
+-    },
+-    writeBooleanField: function(tag, val) {
+-        this.writeVarintField(tag, Boolean(val));
+-    }
++  return root + dir;
+ };
+ 
+-function readVarintRemainder(val, pbf) {
+-    var buf = pbf.buf, b;
+-
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x10000000;         if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x800000000;        if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x40000000000;      if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x2000000000000;    if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x100000000000000;  if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x8000000000000000; if (b < 0x80) return val;
+ 
+-    throw new Error('Expected varint not more than 10 bytes');
+-}
++exports.basename = function(path, ext) {
++  var f = splitPath(path)[2];
++  // TODO: make this comparison case-insensitive on windows?
++  if (ext && f.substr(-1 * ext.length) === ext) {
++    f = f.substr(0, f.length - ext.length);
++  }
++  return f;
++};
+ 
+-function writeBigVarint(val, pbf) {
+-    pbf.realloc(10);
+ 
+-    var maxPos = pbf.pos + 10;
++exports.extname = function(path) {
++  return splitPath(path)[3];
++};
+ 
+-    while (val >= 1) {
+-        if (pbf.pos >= maxPos) throw new Error('Given varint doesn\'t fit into 10 bytes');
+-        var b = val & 0xff;
+-        pbf.buf[pbf.pos++] = b | (val >= 0x80 ? 0x80 : 0);
+-        val /= 0x80;
++function filter (xs, f) {
++    if (xs.filter) return xs.filter(f);
++    var res = [];
++    for (var i = 0; i < xs.length; i++) {
++        if (f(xs[i], i, xs)) res.push(xs[i]);
+     }
++    return res;
+ }
+ 
+-function reallocForRawMessage(startPos, len, pbf) {
+-    var extraLen =
+-        len <= 0x3fff ? 1 :
+-        len <= 0x1fffff ? 2 :
+-        len <= 0xfffffff ? 3 : Math.ceil(Math.log(len) / (Math.LN2 * 7));
+-
+-    // if 1 byte isn't enough for encoding message length, shift the data to the right
+-    pbf.realloc(extraLen);
+-    for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];
+-}
+-
+-function writePackedVarint(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]);   }
+-function writePackedSVarint(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]);  }
+-function writePackedFloat(arr, pbf)    { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]);    }
+-function writePackedDouble(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]);   }
+-function writePackedBoolean(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]);  }
+-function writePackedFixed32(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]);  }
+-function writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }
+-function writePackedFixed64(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]);  }
+-function writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }
++// String.prototype.substr - negative index don't work in IE8
++var substr = 'ab'.substr(-1) === 'b'
++    ? function (str, start, len) { return str.substr(start, len) }
++    : function (str, start, len) {
++        if (start < 0) start = str.length + start;
++        return str.substr(start, len);
++    }
++;
+ 
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"./buffer":401}],403:[function(require,module,exports){
+-arguments[4][55][0].apply(exports,arguments)
+-},{"dup":55}],404:[function(require,module,exports){
++}).call(this,require('_process'))
++},{"_process":403}],393:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = Point;
++// lightweight Buffer shim for pbf browser build
++// based on code from github.com/feross/buffer (MIT-licensed)
+ 
+-function Point(x, y) {
+-    this.x = x;
+-    this.y = y;
+-}
++module.exports = Buffer;
+ 
+-Point.prototype = {
+-    clone: function() { return new Point(this.x, this.y); },
++var ieee754 = require('ieee754');
+ 
+-    add:     function(p) { return this.clone()._add(p);     },
+-    sub:     function(p) { return this.clone()._sub(p);     },
+-    mult:    function(k) { return this.clone()._mult(k);    },
+-    div:     function(k) { return this.clone()._div(k);     },
+-    rotate:  function(a) { return this.clone()._rotate(a);  },
+-    matMult: function(m) { return this.clone()._matMult(m); },
+-    unit:    function() { return this.clone()._unit(); },
+-    perp:    function() { return this.clone()._perp(); },
+-    round:   function() { return this.clone()._round(); },
++var BufferMethods;
+ 
+-    mag: function() {
+-        return Math.sqrt(this.x * this.x + this.y * this.y);
+-    },
++function Buffer(length) {
++    var arr;
++    if (length && length.length) {
++        arr = length;
++        length = arr.length;
++    }
++    var buf = new Uint8Array(length || 0);
++    if (arr) buf.set(arr);
+ 
+-    equals: function(p) {
+-        return this.x === p.x &&
+-               this.y === p.y;
+-    },
++    buf.readUInt32LE = BufferMethods.readUInt32LE;
++    buf.writeUInt32LE = BufferMethods.writeUInt32LE;
++    buf.readInt32LE = BufferMethods.readInt32LE;
++    buf.writeInt32LE = BufferMethods.writeInt32LE;
++    buf.readFloatLE = BufferMethods.readFloatLE;
++    buf.writeFloatLE = BufferMethods.writeFloatLE;
++    buf.readDoubleLE = BufferMethods.readDoubleLE;
++    buf.writeDoubleLE = BufferMethods.writeDoubleLE;
++    buf.toString = BufferMethods.toString;
++    buf.write = BufferMethods.write;
++    buf.slice = BufferMethods.slice;
++    buf.copy = BufferMethods.copy;
+ 
+-    dist: function(p) {
+-        return Math.sqrt(this.distSqr(p));
+-    },
++    buf._isBuffer = true;
++    return buf;
++}
+ 
+-    distSqr: function(p) {
+-        var dx = p.x - this.x,
+-            dy = p.y - this.y;
+-        return dx * dx + dy * dy;
+-    },
++var lastStr, lastStrEncoded;
+ 
+-    angle: function() {
+-        return Math.atan2(this.y, this.x);
++BufferMethods = {
++    readUInt32LE: function(pos) {
++        return ((this[pos]) |
++            (this[pos + 1] << 8) |
++            (this[pos + 2] << 16)) +
++            (this[pos + 3] * 0x1000000);
+     },
+ 
+-    angleTo: function(b) {
+-        return Math.atan2(this.y - b.y, this.x - b.x);
++    writeUInt32LE: function(val, pos) {
++        this[pos] = val;
++        this[pos + 1] = (val >>> 8);
++        this[pos + 2] = (val >>> 16);
++        this[pos + 3] = (val >>> 24);
+     },
+ 
+-    angleWith: function(b) {
+-        return this.angleWithSep(b.x, b.y);
++    readInt32LE: function(pos) {
++        return ((this[pos]) |
++            (this[pos + 1] << 8) |
++            (this[pos + 2] << 16)) +
++            (this[pos + 3] << 24);
+     },
+ 
+-    // Find the angle of the two vectors, solving the formula for the cross product a x b = |a||b|sin(θ) for θ.
+-    angleWithSep: function(x, y) {
+-        return Math.atan2(
+-            this.x * y - this.y * x,
+-            this.x * x + this.y * y);
+-    },
++    readFloatLE:  function(pos) { return ieee754.read(this, pos, true, 23, 4); },
++    readDoubleLE: function(pos) { return ieee754.read(this, pos, true, 52, 8); },
+ 
+-    _matMult: function(m) {
+-        var x = m[0] * this.x + m[1] * this.y,
+-            y = m[2] * this.x + m[3] * this.y;
+-        this.x = x;
+-        this.y = y;
+-        return this;
+-    },
++    writeFloatLE:  function(val, pos) { return ieee754.write(this, val, pos, true, 23, 4); },
++    writeDoubleLE: function(val, pos) { return ieee754.write(this, val, pos, true, 52, 8); },
+ 
+-    _add: function(p) {
+-        this.x += p.x;
+-        this.y += p.y;
+-        return this;
+-    },
++    toString: function(encoding, start, end) {
++        var str = '',
++            tmp = '';
+ 
+-    _sub: function(p) {
+-        this.x -= p.x;
+-        this.y -= p.y;
+-        return this;
+-    },
++        start = start || 0;
++        end = Math.min(this.length, end || this.length);
+ 
+-    _mult: function(k) {
+-        this.x *= k;
+-        this.y *= k;
+-        return this;
+-    },
++        for (var i = start; i < end; i++) {
++            var ch = this[i];
++            if (ch <= 0x7F) {
++                str += decodeURIComponent(tmp) + String.fromCharCode(ch);
++                tmp = '';
++            } else {
++                tmp += '%' + ch.toString(16);
++            }
++        }
+ 
+-    _div: function(k) {
+-        this.x /= k;
+-        this.y /= k;
+-        return this;
+-    },
++        str += decodeURIComponent(tmp);
+ 
+-    _unit: function() {
+-        this._div(this.mag());
+-        return this;
++        return str;
+     },
+ 
+-    _perp: function() {
+-        var y = this.y;
+-        this.y = this.x;
+-        this.x = -y;
+-        return this;
++    write: function(str, pos) {
++        var bytes = str === lastStr ? lastStrEncoded : encodeString(str);
++        for (var i = 0; i < bytes.length; i++) {
++            this[pos + i] = bytes[i];
++        }
+     },
+ 
+-    _rotate: function(angle) {
+-        var cos = Math.cos(angle),
+-            sin = Math.sin(angle),
+-            x = cos * this.x - sin * this.y,
+-            y = sin * this.x + cos * this.y;
+-        this.x = x;
+-        this.y = y;
+-        return this;
++    slice: function(start, end) {
++        return this.subarray(start, end);
+     },
+ 
+-    _round: function() {
+-        this.x = Math.round(this.x);
+-        this.y = Math.round(this.y);
+-        return this;
+-    }
+-};
+-
+-// constructs Point from an array if necessary
+-Point.convert = function (a) {
+-    if (a instanceof Point) {
+-        return a;
+-    }
+-    if (Array.isArray(a)) {
+-        return new Point(a[0], a[1]);
++    copy: function(buf, pos) {
++        pos = pos || 0;
++        for (var i = 0; i < this.length; i++) {
++            buf[pos + i] = this[i];
++        }
+     }
+-    return a;
+ };
+ 
+-},{}],405:[function(require,module,exports){
+-// Copyright 2014 Simon Lydell
+-// X11 (“MIT”) Licensed. (See LICENSE.)
+-
+-void (function(root, factory) {
+-  if (typeof define === "function" && define.amd) {
+-    define(factory)
+-  } else if (typeof exports === "object") {
+-    module.exports = factory()
+-  } else {
+-    root.resolveUrl = factory()
+-  }
+-}(this, function() {
+-
+-  function resolveUrl(/* ...urls */) {
+-    var numUrls = arguments.length
+-
+-    if (numUrls === 0) {
+-      throw new Error("resolveUrl requires at least one argument; got none.")
+-    }
+-
+-    var base = document.createElement("base")
+-    base.href = arguments[0]
+-
+-    if (numUrls === 1) {
+-      return base.href
+-    }
+-
+-    var head = document.getElementsByTagName("head")[0]
+-    head.insertBefore(base, head.firstChild)
+-
+-    var a = document.createElement("a")
+-    var resolved
+-
+-    for (var index = 1; index < numUrls; index++) {
+-      a.href = arguments[index]
+-      resolved = a.href
+-      base.href = resolved
+-    }
+-
+-    head.removeChild(base)
+-
+-    return resolved
+-  }
+-
+-  return resolveUrl
+-
+-}));
+-
+-},{}],406:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = ShelfPack;
++BufferMethods.writeInt32LE = BufferMethods.writeUInt32LE;
+ 
++Buffer.byteLength = function(str) {
++    lastStr = str;
++    lastStrEncoded = encodeString(str);
++    return lastStrEncoded.length;
++};
+ 
+-/**
+- * Create a new ShelfPack bin allocator.
+- *
+- * Uses the Shelf Best Height Fit algorithm from
+- * http://clb.demon.fi/files/RectangleBinPack.pdf
+- *
+- * @class  ShelfPack
+- * @param  {number}  [w=64]  Initial width of the sprite
+- * @param  {number}  [h=64]  Initial width of the sprite
+- * @param  {Object}  [options]
+- * @param  {boolean} [options.autoResize=false]  If `true`, the sprite will automatically grow
+- * @example
+- * var sprite = new ShelfPack(64, 64, { autoResize: false });
+- */
+-function ShelfPack(w, h, options) {
+-    options = options || {};
+-    this.w = w || 64;
+-    this.h = h || 64;
+-    this.autoResize = !!options.autoResize;
+-    this.shelves = [];
+-    this.stats = {};
+-    this.count = function(h) {
+-        this.stats[h] = (this.stats[h] | 0) + 1;
+-    };
+-}
++Buffer.isBuffer = function(buf) {
++    return !!(buf && buf._isBuffer);
++};
+ 
+-/**
+- * Batch pack multiple bins into the sprite.
+- *
+- * @param   {Array}   bins Array of requested bins - each object should have `width`, `height` (or `w`, `h`) properties
+- * @param   {Object}  [options]
+- * @param   {boolean} [options.inPlace=false] If `true`, the supplied bin objects will be updated inplace with `x` and `y` properties
+- * @returns {Array}   Array of allocated bins - each bin is an object with `x`, `y`, `w`, `h` properties
+- * @example
+- * var bins = [
+- *     { id: 'a', width: 12, height: 12 },
+- *     { id: 'b', width: 12, height: 16 },
+- *     { id: 'c', width: 12, height: 24 }
+- * ];
+- * var results = sprite.pack(bins, { inPlace: false });
+- */
+-ShelfPack.prototype.pack = function(bins, options) {
+-    bins = [].concat(bins);
+-    options = options || {};
++function encodeString(str) {
++    var length = str.length,
++        bytes = [];
+ 
+-    var results = [],
+-        w, h, allocation;
++    for (var i = 0, c, lead; i < length; i++) {
++        c = str.charCodeAt(i); // code point
++
++        if (c > 0xD7FF && c < 0xE000) {
++
++            if (lead) {
++                if (c < 0xDC00) {
++                    bytes.push(0xEF, 0xBF, 0xBD);
++                    lead = c;
++                    continue;
++
++                } else {
++                    c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;
++                    lead = null;
++                }
++
++            } else {
++                if (c > 0xDBFF || (i + 1 === length)) bytes.push(0xEF, 0xBF, 0xBD);
++                else lead = c;
+ 
+-    for (var i = 0; i < bins.length; i++) {
+-        w = bins[i].w || bins[i].width;
+-        h = bins[i].h || bins[i].height;
+-        if (w && h) {
+-            allocation = this.packOne(w, h);
+-            if (!allocation) {
+                 continue;
+             }
+-            if (options.inPlace) {
+-                bins[i].x = allocation.x;
+-                bins[i].y = allocation.y;
+-            }
+-            results.push(allocation);
++
++        } else if (lead) {
++            bytes.push(0xEF, 0xBF, 0xBD);
++            lead = null;
+         }
++
++        if (c < 0x80) bytes.push(c);
++        else if (c < 0x800) bytes.push(c >> 0x6 | 0xC0, c & 0x3F | 0x80);
++        else if (c < 0x10000) bytes.push(c >> 0xC | 0xE0, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
++        else bytes.push(c >> 0x12 | 0xF0, c >> 0xC & 0x3F | 0x80, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
+     }
++    return bytes;
++}
+ 
+-    return results;
+-};
++},{"ieee754":223}],394:[function(require,module,exports){
++(function (global){
++'use strict';
+ 
+-/**
+- * Pack a single bin into the sprite.
+- *
+- * @param   {number}  w   Width of the bin to allocate
+- * @param   {number}  h   Height of the bin to allocate
+- * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
+- * @example
+- * var results = sprite.packOne(12, 16);
+- */
+-ShelfPack.prototype.packOne = function(w, h) {
+-    var y = 0,
+-        best = { shelf: -1, waste: Infinity },
+-        shelf, waste;
++module.exports = Pbf;
+ 
+-    // find the best shelf
+-    for (var i = 0; i < this.shelves.length; i++) {
+-        shelf = this.shelves[i];
+-        y += shelf.h;
++var Buffer = global.Buffer || require('./buffer');
+ 
+-        // exactly the right height with width to spare, pack it..
+-        if (h === shelf.h && w <= shelf.free) {
+-            this.count(h);
+-            return shelf.alloc(w, h);
+-        }
+-        // not enough height or width, skip it..
+-        if (h > shelf.h || w > shelf.free) {
+-            continue;
+-        }
+-        // maybe enough height or width, minimize waste..
+-        if (h < shelf.h && w <= shelf.free) {
+-            waste = shelf.h - h;
+-            if (waste < best.waste) {
+-                best.waste = waste;
+-                best.shelf = i;
+-            }
+-        }
+-    }
++function Pbf(buf) {
++    this.buf = !Buffer.isBuffer(buf) ? new Buffer(buf || 0) : buf;
++    this.pos = 0;
++    this.length = this.buf.length;
++}
+ 
+-    if (best.shelf !== -1) {
+-        shelf = this.shelves[best.shelf];
+-        this.count(h);
+-        return shelf.alloc(w, h);
+-    }
++Pbf.Varint  = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum
++Pbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64
++Pbf.Bytes   = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields
++Pbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32
+ 
+-    // add shelf..
+-    if (h <= (this.h - y) && w <= this.w) {
+-        shelf = new Shelf(y, this.w, h);
+-        this.shelves.push(shelf);
+-        this.count(h);
+-        return shelf.alloc(w, h);
+-    }
++var SHIFT_LEFT_32 = (1 << 16) * (1 << 16),
++    SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32,
++    POW_2_63 = Math.pow(2, 63);
+ 
+-    // no more space..
+-    // If `autoResize` option is set, grow the sprite as follows:
+-    //  * double whichever sprite dimension is smaller (`w1` or `h1`)
+-    //  * if sprite dimensions are equal, grow width before height
+-    //  * accomodate very large bin requests (big `w` or `h`)
+-    if (this.autoResize) {
+-        var h1, h2, w1, w2;
++Pbf.prototype = {
+ 
+-        h1 = h2 = this.h;
+-        w1 = w2 = this.w;
++    destroy: function() {
++        this.buf = null;
++    },
+ 
+-        if (w1 <= h1 || w > w1) {   // grow width..
+-            w2 = Math.max(w, w1) * 2;
+-        }
+-        if (h1 < w1 || h > h1) {    // grow height..
+-            h2 = Math.max(h, h1) * 2;
++    // === READING =================================================================
++
++    readFields: function(readField, result, end) {
++        end = end || this.length;
++
++        while (this.pos < end) {
++            var val = this.readVarint(),
++                tag = val >> 3,
++                startPos = this.pos;
++
++            readField(tag, result, this);
++
++            if (this.pos === startPos) this.skip(val);
+         }
++        return result;
++    },
+ 
+-        this.resize(w2, h2);
+-        return this.packOne(w, h);  // retry
+-    }
++    readMessage: function(readField, result) {
++        return this.readFields(readField, result, this.readVarint() + this.pos);
++    },
+ 
+-    return null;
+-};
++    readFixed32: function() {
++        var val = this.buf.readUInt32LE(this.pos);
++        this.pos += 4;
++        return val;
++    },
+ 
+-/**
+- * Clear the sprite.
+- *
+- * @example
+- * sprite.clear();
+- */
+-ShelfPack.prototype.clear = function() {
+-    this.shelves = [];
+-    this.stats = {};
+-};
++    readSFixed32: function() {
++        var val = this.buf.readInt32LE(this.pos);
++        this.pos += 4;
++        return val;
++    },
+ 
+-/**
+- * Resize the sprite.
+- * The resize will fail if the requested dimensions are smaller than the current sprite dimensions.
+- *
+- * @param   {number}  w  Requested new sprite width
+- * @param   {number}  h  Requested new sprite height
+- * @returns {boolean} `true` if resize succeeded, `false` if failed
+- * @example
+- * sprite.resize(256, 256);
+- */
+-ShelfPack.prototype.resize = function(w, h) {
+-    if (w < this.w || h < this.h) {
+-        return false;
+-    }
++    // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)
+ 
+-    this.w = w;
+-    this.h = h;
+-    for (var i = 0; i < this.shelves.length; i++) {
+-        this.shelves[i].resize(w);
+-    }
+-    return true;
+-};
++    readFixed64: function() {
++        var val = this.buf.readUInt32LE(this.pos) + this.buf.readUInt32LE(this.pos + 4) * SHIFT_LEFT_32;
++        this.pos += 8;
++        return val;
++    },
+ 
++    readSFixed64: function() {
++        var val = this.buf.readUInt32LE(this.pos) + this.buf.readInt32LE(this.pos + 4) * SHIFT_LEFT_32;
++        this.pos += 8;
++        return val;
++    },
+ 
++    readFloat: function() {
++        var val = this.buf.readFloatLE(this.pos);
++        this.pos += 4;
++        return val;
++    },
+ 
+-/**
+- * Create a new Shelf.
+- *
+- * @private
+- * @class  Shelf
+- * @param  {number}  y   Top coordinate of the new shelf
+- * @param  {number}  w   Width of the new shelf
+- * @param  {number}  h   Height of the new shelf
+- * @example
+- * var shelf = new Shelf(64, 512, 24);
+- */
+-function Shelf(y, w, h) {
+-    this.x = 0;
+-    this.y = y;
+-    this.w = this.free = w;
+-    this.h = h;
+-}
++    readDouble: function() {
++        var val = this.buf.readDoubleLE(this.pos);
++        this.pos += 8;
++        return val;
++    },
+ 
+-/**
+- * Allocate a single bin into the shelf.
+- *
+- * @private
+- * @param   {number}  w   Width of the bin to allocate
+- * @param   {number}  h   Height of the bin to allocate
+- * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
+- * @example
+- * shelf.alloc(12, 16);
+- */
+-Shelf.prototype.alloc = function(w, h) {
+-    if (w > this.free || h > this.h) {
+-        return null;
+-    }
+-    var x = this.x;
+-    this.x += w;
+-    this.free -= w;
+-    return { x: x, y: this.y, w: w, h: h, width: w, height: h };
+-};
++    readVarint: function() {
++        var buf = this.buf,
++            val, b;
+ 
+-/**
+- * Resize the shelf.
+- * The resize will fail if the requested width is smaller than the current shelf width.
+- *
+- * @private
+- * @param   {number}  w  Requested new width of the shelf
+- * @returns {boolean} true if resize succeeded, false if failed
+- * @example
+- * shelf.resize(512);
+- */
+-Shelf.prototype.resize = function(w) {
+-    if (w < this.w) {
+-        return false;
+-    }
+-    this.free += (w - this.w);
+-    this.w = w;
+-    return true;
+-};
++        b = buf[this.pos++]; val  =  b & 0x7f;        if (b < 0x80) return val;
++        b = buf[this.pos++]; val |= (b & 0x7f) << 7;  if (b < 0x80) return val;
++        b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;
++        b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;
+ 
+-},{}],407:[function(require,module,exports){
+-'use strict';
++        return readVarintRemainder(val, this);
++    },
+ 
+-var kdbush = require('kdbush');
++    readVarint64: function() {
++        var startPos = this.pos,
++            val = this.readVarint();
+ 
+-module.exports = supercluster;
++        if (val < POW_2_63) return val;
+ 
+-function supercluster(options) {
+-    return new SuperCluster(options);
+-}
++        var pos = this.pos - 2;
++        while (this.buf[pos] === 0xff) pos--;
++        if (pos < startPos) pos = startPos;
+ 
+-function SuperCluster(options) {
+-    this.options = extend(Object.create(this.options), options);
+-    this.trees = new Array(this.options.maxZoom + 1);
+-}
++        val = 0;
++        for (var i = 0; i < pos - startPos + 1; i++) {
++            var b = ~this.buf[startPos + i] & 0x7f;
++            val += i < 4 ? b << i * 7 : b * Math.pow(2, i * 7);
++        }
+ 
+-SuperCluster.prototype = {
+-    options: {
+-        minZoom: 0,   // min zoom to generate clusters on
+-        maxZoom: 16,  // max zoom level to cluster the points on
+-        radius: 40,   // cluster radius in pixels
+-        extent: 512,  // tile extent (radius is calculated relative to it)
+-        nodeSize: 64, // size of the KD-tree leaf node, affects performance
+-        log: false    // whether to log timing info
++        return -val - 1;
+     },
+ 
+-    load: function (points) {
+-        var log = this.options.log;
++    readSVarint: function() {
++        var num = this.readVarint();
++        return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding
++    },
+ 
+-        if (log) console.time('total time');
++    readBoolean: function() {
++        return Boolean(this.readVarint());
++    },
+ 
+-        var timerId = 'prepare ' + points.length + ' points';
+-        if (log) console.time(timerId);
++    readString: function() {
++        var end = this.readVarint() + this.pos,
++            str = this.buf.toString('utf8', this.pos, end);
++        this.pos = end;
++        return str;
++    },
+ 
+-        this.points = points;
++    readBytes: function() {
++        var end = this.readVarint() + this.pos,
++            buffer = this.buf.slice(this.pos, end);
++        this.pos = end;
++        return buffer;
++    },
+ 
+-        // generate a cluster object for each point
+-        var clusters = points.map(createPointCluster);
+-        if (log) console.timeEnd(timerId);
++    // verbose for performance reasons; doesn't affect gzipped size
+ 
+-        // cluster points on max zoom, then cluster the results on previous zoom, etc.;
+-        // results in a cluster hierarchy across zoom levels
+-        for (var z = this.options.maxZoom; z >= this.options.minZoom; z--) {
+-            var now = +Date.now();
++    readPackedVarint: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readVarint());
++        return arr;
++    },
++    readPackedSVarint: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readSVarint());
++        return arr;
++    },
++    readPackedBoolean: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readBoolean());
++        return arr;
++    },
++    readPackedFloat: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readFloat());
++        return arr;
++    },
++    readPackedDouble: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readDouble());
++        return arr;
++    },
++    readPackedFixed32: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readFixed32());
++        return arr;
++    },
++    readPackedSFixed32: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readSFixed32());
++        return arr;
++    },
++    readPackedFixed64: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readFixed64());
++        return arr;
++    },
++    readPackedSFixed64: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readSFixed64());
++        return arr;
++    },
+ 
+-            // index input points into a KD-tree
+-            this.trees[z + 1] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
++    skip: function(val) {
++        var type = val & 0x7;
++        if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}
++        else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;
++        else if (type === Pbf.Fixed32) this.pos += 4;
++        else if (type === Pbf.Fixed64) this.pos += 8;
++        else throw new Error('Unimplemented type: ' + type);
++    },
+ 
+-            clusters = this._cluster(clusters, z); // create a new set of clusters for the zoom
++    // === WRITING =================================================================
+ 
+-            if (log) console.log('z%d: %d clusters in %dms', z, clusters.length, +Date.now() - now);
++    writeTag: function(tag, type) {
++        this.writeVarint((tag << 3) | type);
++    },
++
++    realloc: function(min) {
++        var length = this.length || 16;
++
++        while (length < this.pos + min) length *= 2;
++
++        if (length !== this.length) {
++            var buf = new Buffer(length);
++            this.buf.copy(buf);
++            this.buf = buf;
++            this.length = length;
+         }
++    },
+ 
+-        // index top-level clusters
+-        this.trees[this.options.minZoom] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
++    finish: function() {
++        this.length = this.pos;
++        this.pos = 0;
++        return this.buf.slice(0, this.length);
++    },
+ 
+-        if (log) console.timeEnd('total time');
++    writeFixed32: function(val) {
++        this.realloc(4);
++        this.buf.writeUInt32LE(val, this.pos);
++        this.pos += 4;
++    },
+ 
+-        return this;
++    writeSFixed32: function(val) {
++        this.realloc(4);
++        this.buf.writeInt32LE(val, this.pos);
++        this.pos += 4;
+     },
+ 
+-    getClusters: function (bbox, zoom) {
+-        var tree = this.trees[this._limitZoom(zoom)];
+-        var ids = tree.range(lngX(bbox[0]), latY(bbox[3]), lngX(bbox[2]), latY(bbox[1]));
+-        var clusters = [];
+-        for (var i = 0; i < ids.length; i++) {
+-            var c = tree.points[ids[i]];
+-            clusters.push(c.id !== -1 ? this.points[c.id] : getClusterJSON(c));
+-        }
+-        return clusters;
++    writeFixed64: function(val) {
++        this.realloc(8);
++        this.buf.writeInt32LE(val & -1, this.pos);
++        this.buf.writeUInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
++        this.pos += 8;
+     },
+ 
+-    getTile: function (z, x, y) {
+-        var z2 = Math.pow(2, z);
+-        var extent = this.options.extent;
+-        var p = this.options.radius / extent;
+-        var tree = this.trees[this._limitZoom(z)];
+-        var ids = tree.range(
+-            (x - p) / z2,
+-            (y - p) / z2,
+-            (x + 1 + p) / z2,
+-            (y + 1 + p) / z2);
++    writeSFixed64: function(val) {
++        this.realloc(8);
++        this.buf.writeInt32LE(val & -1, this.pos);
++        this.buf.writeInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
++        this.pos += 8;
++    },
+ 
+-        if (!ids.length) return null;
++    writeVarint: function(val) {
++        val = +val;
+ 
+-        var tile = {
+-            features: []
+-        };
+-        for (var i = 0; i < ids.length; i++) {
+-            var c = tree.points[ids[i]];
+-            var feature = {
+-                type: 1,
+-                geometry: [[
+-                    Math.round(extent * (c.x * z2 - x)),
+-                    Math.round(extent * (c.y * z2 - y))
+-                ]],
+-                tags: c.id !== -1 ? this.points[c.id].properties : getClusterProperties(c)
+-            };
+-            tile.features.push(feature);
++        if (val > 0xfffffff) {
++            writeBigVarint(val, this);
++            return;
+         }
+-        return tile;
++
++        this.realloc(4);
++
++        this.buf[this.pos++] =           val & 0x7f  | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
++        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
++        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
++        this.buf[this.pos++] =   (val >>> 7) & 0x7f;
++    },
++
++    writeSVarint: function(val) {
++        this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);
++    },
++
++    writeBoolean: function(val) {
++        this.writeVarint(Boolean(val));
++    },
++
++    writeString: function(str) {
++        str = String(str);
++        var bytes = Buffer.byteLength(str);
++        this.writeVarint(bytes);
++        this.realloc(bytes);
++        this.buf.write(str, this.pos);
++        this.pos += bytes;
++    },
++
++    writeFloat: function(val) {
++        this.realloc(4);
++        this.buf.writeFloatLE(val, this.pos);
++        this.pos += 4;
++    },
++
++    writeDouble: function(val) {
++        this.realloc(8);
++        this.buf.writeDoubleLE(val, this.pos);
++        this.pos += 8;
+     },
+ 
+-    _limitZoom: function (z) {
+-        return Math.max(this.options.minZoom, Math.min(z, this.options.maxZoom + 1));
++    writeBytes: function(buffer) {
++        var len = buffer.length;
++        this.writeVarint(len);
++        this.realloc(len);
++        for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];
+     },
+ 
+-    _cluster: function (points, zoom) {
+-        var clusters = [];
+-        var r = this.options.radius / (this.options.extent * Math.pow(2, zoom));
++    writeRawMessage: function(fn, obj) {
++        this.pos++; // reserve 1 byte for short message length
+ 
+-        // loop through each point
+-        for (var i = 0; i < points.length; i++) {
+-            var p = points[i];
+-            // if we've already visited the point at this zoom level, skip it
+-            if (p.zoom <= zoom) continue;
+-            p.zoom = zoom;
++        // write the message directly to the buffer and see how much was written
++        var startPos = this.pos;
++        fn(obj, this);
++        var len = this.pos - startPos;
+ 
+-            // find all nearby points
+-            var tree = this.trees[zoom + 1];
+-            var neighborIds = tree.within(p.x, p.y, r);
++        if (len >= 0x80) reallocForRawMessage(startPos, len, this);
+ 
+-            var foundNeighbors = false;
+-            var numPoints = p.numPoints;
+-            var wx = p.x * numPoints;
+-            var wy = p.y * numPoints;
++        // finally, write the message length in the reserved place and restore the position
++        this.pos = startPos - 1;
++        this.writeVarint(len);
++        this.pos += len;
++    },
+ 
+-            for (var j = 0; j < neighborIds.length; j++) {
+-                var b = tree.points[neighborIds[j]];
+-                // filter out neighbors that are too far or already processed
+-                if (zoom < b.zoom) {
+-                    foundNeighbors = true;
+-                    b.zoom = zoom; // save the zoom (so it doesn't get processed twice)
+-                    wx += b.x * b.numPoints; // accumulate coordinates for calculating weighted center
+-                    wy += b.y * b.numPoints;
+-                    numPoints += b.numPoints;
+-                }
+-            }
++    writeMessage: function(tag, fn, obj) {
++        this.writeTag(tag, Pbf.Bytes);
++        this.writeRawMessage(fn, obj);
++    },
+ 
+-            clusters.push(foundNeighbors ? createCluster(wx / numPoints, wy / numPoints, numPoints, -1) : p);
+-        }
++    writePackedVarint:   function(tag, arr) { this.writeMessage(tag, writePackedVarint, arr);   },
++    writePackedSVarint:  function(tag, arr) { this.writeMessage(tag, writePackedSVarint, arr);  },
++    writePackedBoolean:  function(tag, arr) { this.writeMessage(tag, writePackedBoolean, arr);  },
++    writePackedFloat:    function(tag, arr) { this.writeMessage(tag, writePackedFloat, arr);    },
++    writePackedDouble:   function(tag, arr) { this.writeMessage(tag, writePackedDouble, arr);   },
++    writePackedFixed32:  function(tag, arr) { this.writeMessage(tag, writePackedFixed32, arr);  },
++    writePackedSFixed32: function(tag, arr) { this.writeMessage(tag, writePackedSFixed32, arr); },
++    writePackedFixed64:  function(tag, arr) { this.writeMessage(tag, writePackedFixed64, arr);  },
++    writePackedSFixed64: function(tag, arr) { this.writeMessage(tag, writePackedSFixed64, arr); },
+ 
+-        return clusters;
++    writeBytesField: function(tag, buffer) {
++        this.writeTag(tag, Pbf.Bytes);
++        this.writeBytes(buffer);
++    },
++    writeFixed32Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed32);
++        this.writeFixed32(val);
++    },
++    writeSFixed32Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed32);
++        this.writeSFixed32(val);
++    },
++    writeFixed64Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed64);
++        this.writeFixed64(val);
++    },
++    writeSFixed64Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed64);
++        this.writeSFixed64(val);
++    },
++    writeVarintField: function(tag, val) {
++        this.writeTag(tag, Pbf.Varint);
++        this.writeVarint(val);
++    },
++    writeSVarintField: function(tag, val) {
++        this.writeTag(tag, Pbf.Varint);
++        this.writeSVarint(val);
++    },
++    writeStringField: function(tag, str) {
++        this.writeTag(tag, Pbf.Bytes);
++        this.writeString(str);
++    },
++    writeFloatField: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed32);
++        this.writeFloat(val);
++    },
++    writeDoubleField: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed64);
++        this.writeDouble(val);
++    },
++    writeBooleanField: function(tag, val) {
++        this.writeVarintField(tag, Boolean(val));
+     }
+ };
+ 
+-function createCluster(x, y, numPoints, id) {
+-    return {
+-        x: x, // weighted cluster center
+-        y: y,
+-        zoom: Infinity, // the last zoom the cluster was processed at
+-        id: id, // index of the source feature in the original input array
+-        numPoints: numPoints
+-    };
+-}
++function readVarintRemainder(val, pbf) {
++    var buf = pbf.buf, b;
+ 
+-function createPointCluster(p, i) {
+-    var coords = p.geometry.coordinates;
+-    return createCluster(lngX(coords[0]), latY(coords[1]), 1, i);
+-}
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x10000000;         if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x800000000;        if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x40000000000;      if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x2000000000000;    if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x100000000000000;  if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x8000000000000000; if (b < 0x80) return val;
+ 
+-function getClusterJSON(cluster) {
+-    return {
+-        type: 'Feature',
+-        properties: getClusterProperties(cluster),
+-        geometry: {
+-            type: 'Point',
+-            coordinates: [xLng(cluster.x), yLat(cluster.y)]
+-        }
+-    };
++    throw new Error('Expected varint not more than 10 bytes');
+ }
+ 
+-function getClusterProperties(cluster) {
+-    var count = cluster.numPoints;
+-    var abbrev = count >= 10000 ? Math.round(count / 1000) + 'k' :
+-                 count >= 1000 ? (Math.round(count / 100) / 10) + 'k' : count;
+-    return {
+-        cluster: true,
+-        point_count: count,
+-        point_count_abbreviated: abbrev
+-    };
+-}
++function writeBigVarint(val, pbf) {
++    pbf.realloc(10);
+ 
+-// longitude/latitude to spherical mercator in [0..1] range
+-function lngX(lng) {
+-    return lng / 360 + 0.5;
+-}
+-function latY(lat) {
+-    var sin = Math.sin(lat * Math.PI / 180),
+-        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
+-    return y < 0 ? 0 :
+-           y > 1 ? 1 : y;
+-}
++    var maxPos = pbf.pos + 10;
+ 
+-// spherical mercator to longitude/latitude
+-function xLng(x) {
+-    return (x - 0.5) * 360;
+-}
+-function yLat(y) {
+-    var y2 = (180 - y * 360) * Math.PI / 180;
+-    return 360 * Math.atan(Math.exp(y2)) / Math.PI - 90;
++    while (val >= 1) {
++        if (pbf.pos >= maxPos) throw new Error('Given varint doesn\'t fit into 10 bytes');
++        var b = val & 0xff;
++        pbf.buf[pbf.pos++] = b | (val >= 0x80 ? 0x80 : 0);
++        val /= 0x80;
++    }
+ }
+ 
+-function extend(dest, src) {
+-    for (var id in src) dest[id] = src[id];
+-    return dest;
+-}
++function reallocForRawMessage(startPos, len, pbf) {
++    var extraLen =
++        len <= 0x3fff ? 1 :
++        len <= 0x1fffff ? 2 :
++        len <= 0xfffffff ? 3 : Math.ceil(Math.log(len) / (Math.LN2 * 7));
+ 
+-function getX(p) {
+-    return p.x;
+-}
+-function getY(p) {
+-    return p.y;
++    // if 1 byte isn't enough for encoding message length, shift the data to the right
++    pbf.realloc(extraLen);
++    for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];
+ }
+ 
+-},{"kdbush":408}],408:[function(require,module,exports){
+-'use strict';
+-
+-var sort = require('./sort');
+-var range = require('./range');
+-var within = require('./within');
+-
+-module.exports = kdbush;
++function writePackedVarint(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]);   }
++function writePackedSVarint(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]);  }
++function writePackedFloat(arr, pbf)    { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]);    }
++function writePackedDouble(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]);   }
++function writePackedBoolean(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]);  }
++function writePackedFixed32(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]);  }
++function writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }
++function writePackedFixed64(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]);  }
++function writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }
+ 
+-function kdbush(points, getX, getY, nodeSize, ArrayType) {
+-    return new KDBush(points, getX, getY, nodeSize, ArrayType);
+-}
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"./buffer":393}],395:[function(require,module,exports){
++"use strict"
+ 
+-function KDBush(points, getX, getY, nodeSize, ArrayType) {
+-    getX = getX || defaultGetX;
+-    getY = getY || defaultGetY;
+-    ArrayType = ArrayType || Array;
++module.exports = permutationSign
+ 
+-    this.nodeSize = nodeSize || 64;
+-    this.points = points;
++var BRUTE_FORCE_CUTOFF = 32
+ 
+-    this.ids = new ArrayType(points.length);
+-    this.coords = new ArrayType(points.length * 2);
++var pool = require("typedarray-pool")
+ 
+-    for (var i = 0; i < points.length; i++) {
+-        this.ids[i] = i;
+-        this.coords[2 * i] = getX(points[i]);
+-        this.coords[2 * i + 1] = getY(points[i]);
++function permutationSign(p) {
++  var n = p.length
++  if(n < BRUTE_FORCE_CUTOFF) {
++    //Use quadratic algorithm for small n
++    var sgn = 1
++    for(var i=0; i<n; ++i) {
++      for(var j=0; j<i; ++j) {
++        if(p[i] < p[j]) {
++          sgn = -sgn
++        } else if(p[i] === p[j]) {
++          return 0
++        }
++      }
+     }
+-
+-    sort(this.ids, this.coords, this.nodeSize, 0, this.ids.length - 1, 0);
+-}
+-
+-KDBush.prototype = {
+-    range: function (minX, minY, maxX, maxY) {
+-        return range(this.ids, this.coords, minX, minY, maxX, maxY, this.nodeSize);
+-    },
+-
+-    within: function (x, y, r) {
+-        return within(this.ids, this.coords, x, y, r, this.nodeSize);
++    return sgn
++  } else {
++    //Otherwise use linear time algorithm
++    var visited = pool.mallocUint8(n)
++    for(var i=0; i<n; ++i) {
++      visited[i] = 0
+     }
+-};
+-
+-function defaultGetX(p) { return p[0]; }
+-function defaultGetY(p) { return p[1]; }
+-
+-},{"./range":409,"./sort":410,"./within":411}],409:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = range;
+-
+-function range(ids, coords, minX, minY, maxX, maxY, nodeSize) {
+-    var stack = [0, ids.length - 1, 0];
+-    var result = [];
+-    var x, y;
+-
+-    while (stack.length) {
+-        var axis = stack.pop();
+-        var right = stack.pop();
+-        var left = stack.pop();
+-
+-        if (right - left <= nodeSize) {
+-            for (var i = left; i <= right; i++) {
+-                x = coords[2 * i];
+-                y = coords[2 * i + 1];
+-                if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[i]);
+-            }
+-            continue;
++    var sgn = 1
++    for(var i=0; i<n; ++i) {
++      if(!visited[i]) {
++        var count = 1
++        visited[i] = 1
++        for(var j=p[i]; j!==i; j=p[j]) {
++          if(visited[j]) {
++            pool.freeUint8(visited)
++            return 0
++          }
++          count += 1
++          visited[j] = 1
+         }
++        if(!(count & 1)) {
++          sgn = -sgn
++        }
++      }
++    }
++    pool.freeUint8(visited)
++    return sgn
++  }
++}
++},{"typedarray-pool":449}],396:[function(require,module,exports){
++"use strict"
+ 
+-        var m = Math.floor((left + right) / 2);
++var pool = require("typedarray-pool")
++var inverse = require("invert-permutation")
+ 
+-        x = coords[2 * m];
+-        y = coords[2 * m + 1];
++function rank(permutation) {
++  var n = permutation.length
++  switch(n) {
++    case 0:
++    case 1:
++      return 0
++    case 2:
++      return permutation[1]
++    default:
++      break
++  }
++  var p = pool.mallocUint32(n)
++  var pinv = pool.mallocUint32(n)
++  var r = 0, s, t, i
++  inverse(permutation, pinv)
++  for(i=0; i<n; ++i) {
++    p[i] = permutation[i]
++  }
++  for(i=n-1; i>0; --i) {
++    t = pinv[i]
++    s = p[i]
++    p[i] = p[t]
++    p[t] = s
++    pinv[i] = pinv[s]
++    pinv[s] = t
++    r = (r + s) * i
++  }
++  pool.freeUint32(pinv)
++  pool.freeUint32(p)
++  return r
++}
+ 
+-        if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[m]);
++function unrank(n, r, p) {
++  switch(n) {
++    case 0:
++      if(p) { return p }
++      return []
++    case 1:
++      if(p) {
++        p[0] = 0
++        return p
++      } else {
++        return [0]
++      }
++    case 2:
++      if(p) {
++        if(r) {
++          p[0] = 0
++          p[1] = 1
++        } else {
++          p[0] = 1
++          p[1] = 0
++        }
++        return p
++      } else {
++        return r ? [0,1] : [1,0]
++      }
++    default:
++      break
++  }
++  p = p || new Array(n)
++  var s, t, i, nf=1
++  p[0] = 0
++  for(i=1; i<n; ++i) {
++    p[i] = i
++    nf = (nf*i)|0
++  }
++  for(i=n-1; i>0; --i) {
++    s = (r / nf)|0
++    r = (r - s * nf)|0
++    nf = (nf / i)|0
++    t = p[i]|0
++    p[i] = p[s]|0
++    p[s] = t|0
++  }
++  return p
++}
+ 
+-        var nextAxis = (axis + 1) % 2;
++exports.rank = rank
++exports.unrank = unrank
+ 
+-        if (axis === 0 ? minX <= x : minY <= y) {
+-            stack.push(left);
+-            stack.push(m - 1);
+-            stack.push(nextAxis);
+-        }
+-        if (axis === 0 ? maxX >= x : maxY >= y) {
+-            stack.push(m + 1);
+-            stack.push(right);
+-            stack.push(nextAxis);
+-        }
+-    }
++},{"invert-permutation":226,"typedarray-pool":449}],397:[function(require,module,exports){
++"use strict"
+ 
+-    return result;
+-}
++module.exports = planarDual
+ 
+-},{}],410:[function(require,module,exports){
+-'use strict';
++var compareAngle = require("compare-angle")
+ 
+-module.exports = sortKD;
++function planarDual(cells, positions) {
+ 
+-function sortKD(ids, coords, nodeSize, left, right, depth) {
+-    if (right - left <= nodeSize) return;
++  var numVertices = positions.length|0
++  var numEdges = cells.length
++  var adj = [new Array(numVertices), new Array(numVertices)]
++  for(var i=0; i<numVertices; ++i) {
++    adj[0][i] = []
++    adj[1][i] = []
++  }
++  for(var i=0; i<numEdges; ++i) {
++    var c = cells[i]
++    adj[0][c[0]].push(c)
++    adj[1][c[1]].push(c)
++  }
+ 
+-    var m = Math.floor((left + right) / 2);
++  var cycles = []
+ 
+-    select(ids, coords, m, left, right, depth % 2);
++  //Add isolated vertices as trivial case
++  for(var i=0; i<numVertices; ++i) {
++    if(adj[0][i].length + adj[1][i].length === 0) {
++      cycles.push( [i] )
++    }
++  }
+ 
+-    sortKD(ids, coords, nodeSize, left, m - 1, depth + 1);
+-    sortKD(ids, coords, nodeSize, m + 1, right, depth + 1);
+-}
++  //Remove a half edge
++  function cut(c, i) {
++    var a = adj[i][c[i]]
++    a.splice(a.indexOf(c), 1)
++  }
+ 
+-function select(ids, coords, k, left, right, inc) {
++  //Find next vertex and cut edge
++  function next(a, b, noCut) {
++    var nextCell, nextVertex, nextDir
++    for(var i=0; i<2; ++i) {
++      if(adj[i][b].length > 0) {
++        nextCell = adj[i][b][0]
++        nextDir = i
++        break
++      }
++    }
++    nextVertex = nextCell[nextDir^1]
+ 
+-    while (right > left) {
+-        if (right - left > 600) {
+-            var n = right - left + 1;
+-            var m = k - left + 1;
+-            var z = Math.log(n);
+-            var s = 0.5 * Math.exp(2 * z / 3);
+-            var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
+-            var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
+-            var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
+-            select(ids, coords, k, newLeft, newRight, inc);
++    for(var dir=0; dir<2; ++dir) {
++      var nbhd = adj[dir][b]
++      for(var k=0; k<nbhd.length; ++k) {
++        var e = nbhd[k]
++        var p = e[dir^1]
++        var cmp = compareAngle(
++            positions[a], 
++            positions[b], 
++            positions[nextVertex],
++            positions[p])
++        if(cmp > 0) {
++          nextCell = e
++          nextVertex = p
++          nextDir = dir
+         }
++      }
++    }
++    if(noCut) {
++      return nextVertex
++    }
++    if(nextCell) {
++      cut(nextCell, nextDir)
++    }
++    return nextVertex
++  }
+ 
+-        var t = coords[2 * k + inc];
+-        var i = left;
+-        var j = right;
+-
+-        swapItem(ids, coords, left, k);
+-        if (coords[2 * right + inc] > t) swapItem(ids, coords, left, right);
++  function extractCycle(v, dir) {
++    var e0 = adj[dir][v][0]
++    var cycle = [v]
++    cut(e0, dir)
++    var u = e0[dir^1]
++    var d0 = dir
++    while(true) {
++      while(u !== v) {
++        cycle.push(u)
++        u = next(cycle[cycle.length-2], u, false)
++      }
++      if(adj[0][v].length + adj[1][v].length === 0) {
++        break
++      }
++      var a = cycle[cycle.length-1]
++      var b = v
++      var c = cycle[1]
++      var d = next(a, b, true)
++      if(compareAngle(positions[a], positions[b], positions[c], positions[d]) < 0) {
++        break
++      }
++      cycle.push(v)
++      u = next(a, b)
++    }
++    return cycle
++  }
+ 
+-        while (i < j) {
+-            swapItem(ids, coords, i, j);
+-            i++;
+-            j--;
+-            while (coords[2 * i + inc] < t) i++;
+-            while (coords[2 * j + inc] > t) j--;
+-        }
++  function shouldGlue(pcycle, ncycle) {
++    return (ncycle[1] === ncycle[ncycle.length-1])
++  }
+ 
+-        if (coords[2 * left + inc] === t) swapItem(ids, coords, left, j);
+-        else {
+-            j++;
+-            swapItem(ids, coords, j, right);
++  for(var i=0; i<numVertices; ++i) {
++    for(var j=0; j<2; ++j) {
++      var pcycle = []
++      while(adj[j][i].length > 0) {
++        var ni = adj[0][i].length
++        var ncycle = extractCycle(i,j)
++        if(shouldGlue(pcycle, ncycle)) {
++          //Glue together trivial cycles
++          pcycle.push.apply(pcycle, ncycle)
++        } else {
++          if(pcycle.length > 0) {
++            cycles.push(pcycle)
++          }
++          pcycle = ncycle
+         }
+-
+-        if (j <= k) left = j + 1;
+-        if (k <= j) right = j - 1;
++      }
++      if(pcycle.length > 0) {
++        cycles.push(pcycle)
++      }
+     }
+-}
+-
+-function swapItem(ids, coords, i, j) {
+-    swap(ids, i, j);
+-    swap(coords, 2 * i, 2 * j);
+-    swap(coords, 2 * i + 1, 2 * j + 1);
+-}
++  }
+ 
+-function swap(arr, i, j) {
+-    var tmp = arr[i];
+-    arr[i] = arr[j];
+-    arr[j] = tmp;
++  //Combine paths and loops together
++  return cycles
+ }
++},{"compare-angle":76}],398:[function(require,module,exports){
++'use strict'
+ 
+-},{}],411:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = within;
+-
+-function within(ids, coords, qx, qy, r, nodeSize) {
+-    var stack = [0, ids.length - 1, 0];
+-    var result = [];
+-    var r2 = r * r;
+-
+-    while (stack.length) {
+-        var axis = stack.pop();
+-        var right = stack.pop();
+-        var left = stack.pop();
+-
+-        if (right - left <= nodeSize) {
+-            for (var i = left; i <= right; i++) {
+-                if (sqDist(coords[2 * i], coords[2 * i + 1], qx, qy) <= r2) result.push(ids[i]);
+-            }
+-            continue;
+-        }
+-
+-        var m = Math.floor((left + right) / 2);
++module.exports = trimLeaves
+ 
+-        var x = coords[2 * m];
+-        var y = coords[2 * m + 1];
++var e2a = require('edges-to-adjacency-list')
+ 
+-        if (sqDist(x, y, qx, qy) <= r2) result.push(ids[m]);
++function trimLeaves(edges, positions) {
++  var adj = e2a(edges, positions.length)
++  var live = new Array(positions.length)
++  var nbhd = new Array(positions.length)
+ 
+-        var nextAxis = (axis + 1) % 2;
++  var dead = []
++  for(var i=0; i<positions.length; ++i) {
++    var count = adj[i].length
++    nbhd[i] = count
++    live[i] = true
++    if(count <= 1) {
++      dead.push(i)
++    }
++  }
+ 
+-        if (axis === 0 ? qx - r <= x : qy - r <= y) {
+-            stack.push(left);
+-            stack.push(m - 1);
+-            stack.push(nextAxis);
+-        }
+-        if (axis === 0 ? qx + r >= x : qy + r >= y) {
+-            stack.push(m + 1);
+-            stack.push(right);
+-            stack.push(nextAxis);
+-        }
++  while(dead.length > 0) {
++    var v = dead.pop()
++    live[v] = false
++    var n = adj[v]
++    for(var i=0; i<n.length; ++i) {
++      var u = n[i]
++      if(--nbhd[u] === 0) {
++        dead.push(u)
++      }
+     }
++  }
+ 
+-    return result;
+-}
++  var newIndex = new Array(positions.length)
++  var npositions = []
++  for(var i=0; i<positions.length; ++i) {
++    if(live[i]) {
++      var v = npositions.length
++      newIndex[i] = v
++      npositions.push(positions[i])
++    } else {
++      newIndex[i] = -1
++    }
++  }
+ 
+-function sqDist(ax, ay, bx, by) {
+-    var dx = ax - bx;
+-    var dy = ay - by;
+-    return dx * dx + dy * dy;
++  var nedges = []
++  for(var i=0; i<edges.length; ++i) {
++    var e = edges[i]
++    if(live[e[0]] && live[e[1]]) {
++      nedges.push([ newIndex[e[0]], newIndex[e[1]] ])
++    }
++  }
++  
++  return [ nedges, npositions ]
+ }
++},{"edges-to-adjacency-list":94}],399:[function(require,module,exports){
++'use strict'
+ 
+-},{}],412:[function(require,module,exports){
+-/*
+- * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+- *
+- * Redistribution and use in source and binary forms, with or without
+- * modification, are permitted provided that the following conditions
+- * are met:
+- * 1. Redistributions of source code must retain the above copyright
+- *    notice, this list of conditions and the following disclaimer.
+- * 2. Redistributions in binary form must reproduce the above copyright
+- *    notice, this list of conditions and the following disclaimer in the
+- *    documentation and/or other materials provided with the distribution.
+- *
+- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+- *
+- * Ported from Webkit
+- * http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/UnitBezier.h
+- */
+-
+-module.exports = UnitBezier;
++module.exports = planarGraphToPolyline
+ 
+-function UnitBezier(p1x, p1y, p2x, p2y) {
+-    // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).
+-    this.cx = 3.0 * p1x;
+-    this.bx = 3.0 * (p2x - p1x) - this.cx;
+-    this.ax = 1.0 - this.cx - this.bx;
++var e2a = require('edges-to-adjacency-list')
++var planarDual = require('planar-dual')
++var preprocessPolygon = require('point-in-big-polygon')
++var twoProduct = require('two-product')
++var robustSum = require('robust-sum')
++var uniq = require('uniq')
++var trimLeaves = require('./lib/trim-leaves')
+ 
+-    this.cy = 3.0 * p1y;
+-    this.by = 3.0 * (p2y - p1y) - this.cy;
+-    this.ay = 1.0 - this.cy - this.by;
++function makeArray(length, fill) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = fill
++  }
++  return result
++}
+ 
+-    this.p1x = p1x;
+-    this.p1y = p2y;
+-    this.p2x = p2x;
+-    this.p2y = p2y;
++function makeArrayOfArrays(length) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = []
++  }
++  return result
+ }
+ 
+-UnitBezier.prototype.sampleCurveX = function(t) {
+-    // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.
+-    return ((this.ax * t + this.bx) * t + this.cx) * t;
+-};
+ 
+-UnitBezier.prototype.sampleCurveY = function(t) {
+-    return ((this.ay * t + this.by) * t + this.cy) * t;
+-};
++function planarGraphToPolyline(edges, positions) {
+ 
+-UnitBezier.prototype.sampleCurveDerivativeX = function(t) {
+-    return (3.0 * this.ax * t + 2.0 * this.bx) * t + this.cx;
+-};
++  //Trim leaves
++  var result = trimLeaves(edges, positions)
++  edges = result[0]
++  positions = result[1]
+ 
+-UnitBezier.prototype.solveCurveX = function(x, epsilon) {
+-    if (typeof epsilon === 'undefined') epsilon = 1e-6;
++  var numVertices = positions.length
++  var numEdges = edges.length
+ 
+-    var t0, t1, t2, x2, i;
++  //Calculate adjacency list, check manifold
++  var adj = e2a(edges, positions.length)
++  for(var i=0; i<numVertices; ++i) {
++    if(adj[i].length % 2 === 1) {
++      throw new Error('planar-graph-to-polyline: graph must be manifold')
++    }
++  }
+ 
+-    // First try a few iterations of Newton's method -- normally very fast.
+-    for (t2 = x, i = 0; i < 8; i++) {
++  //Get faces
++  var faces = planarDual(edges, positions)
+ 
+-        x2 = this.sampleCurveX(t2) - x;
+-        if (Math.abs(x2) < epsilon) return t2;
++  //Check orientation of a polygon using exact arithmetic
++  function ccw(c) {
++    var n = c.length
++    var area = [0]
++    for(var j=0; j<n; ++j) {
++      var a = positions[c[j]]
++      var b = positions[c[(j+1)%n]]
++      var t00 = twoProduct(-a[0], a[1])
++      var t01 = twoProduct(-a[0], b[1])
++      var t10 = twoProduct( b[0], a[1])
++      var t11 = twoProduct( b[0], b[1])
++      area = robustSum(area, robustSum(robustSum(t00, t01), robustSum(t10, t11)))
++    }
++    return area[area.length-1] > 0
++  }
+ 
+-        var d2 = this.sampleCurveDerivativeX(t2);
+-        if (Math.abs(d2) < 1e-6) break;
++  //Extract all clockwise faces
++  faces = faces.filter(ccw)
+ 
+-        t2 = t2 - x2 / d2;
++  //Detect which loops are contained in one another to handle parent-of relation
++  var numFaces = faces.length
++  var parent = new Array(numFaces)
++  var containment = new Array(numFaces)
++  for(var i=0; i<numFaces; ++i) {
++    parent[i] = i
++    var row = new Array(numFaces)
++    var loopVertices = faces[i].map(function(v) {
++      return positions[v]
++    })
++    var pmc = preprocessPolygon([loopVertices])
++    var count = 0
++    outer:
++    for(var j=0; j<numFaces; ++j) {
++      row[j] = 0
++      if(i === j) {
++        continue
++      }
++      var c = faces[j]
++      var n = c.length
++      for(var k=0; k<n; ++k) {
++        var d = pmc(positions[c[k]])
++        if(d !== 0) {
++          if(d < 0) {
++            row[j] = 1
++            count += 1
++          }
++          continue outer
++        }
++      }
++      row[j] = 1
++      count += 1
++    }
++    containment[i] = [count, i, row]
++  }
++  containment.sort(function(a,b) {
++    return b[0] - a[0]
++  })
++  for(var i=0; i<numFaces; ++i) {
++    var row = containment[i]
++    var idx = row[1]
++    var children = row[2]
++    for(var j=0; j<numFaces; ++j) {
++      if(children[j]) {
++        parent[j] = idx
++      }
+     }
++  }
+ 
+-    // Fall back to the bisection method for reliability.
+-    t0 = 0.0;
+-    t1 = 1.0;
+-    t2 = x;
++  //Initialize face adjacency list
++  var fadj = makeArrayOfArrays(numFaces)
++  for(var i=0; i<numFaces; ++i) {
++    fadj[i].push(parent[i])
++    fadj[parent[i]].push(i)
++  }
+ 
+-    if (t2 < t0) return t0;
+-    if (t2 > t1) return t1;
++  //Build adjacency matrix for edges
++  var edgeAdjacency = {}
++  var internalVertices = makeArray(numVertices, false)
++  for(var i=0; i<numFaces; ++i) {
++    var c = faces[i]
++    var n = c.length
++    for(var j=0; j<n; ++j) {
++      var a = c[j]
++      var b = c[(j+1)%n]
++      var key = Math.min(a,b) + ":" + Math.max(a,b)
++      if(key in edgeAdjacency) {
++        var neighbor = edgeAdjacency[key]
++        fadj[neighbor].push(i)
++        fadj[i].push(neighbor)
++        internalVertices[a] = internalVertices[b] = true
++      } else {
++        edgeAdjacency[key] = i
++      }
++    }
++  }
+ 
+-    while (t0 < t1) {
++  function sharedBoundary(c) {
++    var n = c.length
++    for(var i=0; i<n; ++i) {
++      if(!internalVertices[c[i]]) {
++        return false
++      }
++    }
++    return true
++  }
+ 
+-        x2 = this.sampleCurveX(t2);
+-        if (Math.abs(x2 - x) < epsilon) return t2;
++  var toVisit = []
++  var parity = makeArray(numFaces, -1)
++  for(var i=0; i<numFaces; ++i) {
++    if(parent[i] === i && !sharedBoundary(faces[i])) {
++      toVisit.push(i)
++      parity[i] = 0
++    } else {
++      parity[i] = -1
++    }
++  }
+ 
+-        if (x > x2) {
+-            t0 = t2;
+-        } else {
+-            t1 = t2;
++  //Using face adjacency, classify faces as in/out
++  var result = []
++  while(toVisit.length > 0) {
++    var top = toVisit.pop()
++    var nbhd = fadj[top]
++    uniq(nbhd, function(a,b) {
++      return a-b
++    })
++    var nnbhr = nbhd.length
++    var p = parity[top]
++    var polyline
++    if(p === 0) {
++      var c = faces[top]
++      polyline = [c]
++    }
++    for(var i=0; i<nnbhr; ++i) {
++      var f = nbhd[i]
++      if(parity[f] >= 0) {
++        continue
++      }
++      parity[f] = p^1
++      toVisit.push(f)
++      if(p === 0) {
++        var c = faces[f]
++        if(!sharedBoundary(c)) {
++          c.reverse()
++          polyline.push(c)
+         }
+-
+-        t2 = (t1 - t0) * 0.5 + t0;
++      }
+     }
++    if(p === 0) {
++      result.push(polyline)
++    }
++  }
+ 
+-    // Failure.
+-    return t2;
+-};
+-
+-UnitBezier.prototype.solve = function(x, epsilon) {
+-    return this.sampleCurveY(this.solveCurveX(x, epsilon));
+-};
+-
+-},{}],413:[function(require,module,exports){
+-module.exports.VectorTile = require('./lib/vectortile.js');
+-module.exports.VectorTileFeature = require('./lib/vectortilefeature.js');
+-module.exports.VectorTileLayer = require('./lib/vectortilelayer.js');
+-
+-},{"./lib/vectortile.js":414,"./lib/vectortilefeature.js":415,"./lib/vectortilelayer.js":416}],414:[function(require,module,exports){
++  return result
++}
++},{"./lib/trim-leaves":398,"edges-to-adjacency-list":94,"planar-dual":397,"point-in-big-polygon":401,"robust-sum":423,"two-product":447,"uniq":451}],400:[function(require,module,exports){
+ 'use strict';
+ 
+-var VectorTileLayer = require('./vectortilelayer');
+-
+-module.exports = VectorTile;
+-
+-function VectorTile(pbf, end) {
+-    this.layers = pbf.readFields(readTile, {}, end);
+-}
++module.exports = Point;
+ 
+-function readTile(tag, layers, pbf) {
+-    if (tag === 3) {
+-        var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);
+-        if (layer.length) layers[layer.name] = layer;
+-    }
++function Point(x, y) {
++    this.x = x;
++    this.y = y;
+ }
+ 
++Point.prototype = {
++    clone: function() { return new Point(this.x, this.y); },
+ 
+-},{"./vectortilelayer":416}],415:[function(require,module,exports){
+-'use strict';
+-
+-var Point = require('point-geometry');
+-
+-module.exports = VectorTileFeature;
++    add:     function(p) { return this.clone()._add(p);     },
++    sub:     function(p) { return this.clone()._sub(p);     },
++    mult:    function(k) { return this.clone()._mult(k);    },
++    div:     function(k) { return this.clone()._div(k);     },
++    rotate:  function(a) { return this.clone()._rotate(a);  },
++    matMult: function(m) { return this.clone()._matMult(m); },
++    unit:    function() { return this.clone()._unit(); },
++    perp:    function() { return this.clone()._perp(); },
++    round:   function() { return this.clone()._round(); },
+ 
+-function VectorTileFeature(pbf, end, extent, keys, values) {
+-    // Public
+-    this.properties = {};
+-    this.extent = extent;
+-    this.type = 0;
++    mag: function() {
++        return Math.sqrt(this.x * this.x + this.y * this.y);
++    },
+ 
+-    // Private
+-    this._pbf = pbf;
+-    this._geometry = -1;
+-    this._keys = keys;
+-    this._values = values;
++    equals: function(p) {
++        return this.x === p.x &&
++               this.y === p.y;
++    },
+ 
+-    pbf.readFields(readFeature, this, end);
+-}
++    dist: function(p) {
++        return Math.sqrt(this.distSqr(p));
++    },
+ 
+-function readFeature(tag, feature, pbf) {
+-    if (tag == 1) feature._id = pbf.readVarint();
+-    else if (tag == 2) readTag(pbf, feature);
+-    else if (tag == 3) feature.type = pbf.readVarint();
+-    else if (tag == 4) feature._geometry = pbf.pos;
+-}
++    distSqr: function(p) {
++        var dx = p.x - this.x,
++            dy = p.y - this.y;
++        return dx * dx + dy * dy;
++    },
+ 
+-function readTag(pbf, feature) {
+-    var end = pbf.readVarint() + pbf.pos;
++    angle: function() {
++        return Math.atan2(this.y, this.x);
++    },
+ 
+-    while (pbf.pos < end) {
+-        var key = feature._keys[pbf.readVarint()],
+-            value = feature._values[pbf.readVarint()];
+-        feature.properties[key] = value;
+-    }
+-}
++    angleTo: function(b) {
++        return Math.atan2(this.y - b.y, this.x - b.x);
++    },
+ 
+-VectorTileFeature.types = ['Unknown', 'Point', 'LineString', 'Polygon'];
++    angleWith: function(b) {
++        return this.angleWithSep(b.x, b.y);
++    },
+ 
+-VectorTileFeature.prototype.loadGeometry = function() {
+-    var pbf = this._pbf;
+-    pbf.pos = this._geometry;
++    // Find the angle of the two vectors, solving the formula for the cross product a x b = |a||b|sin(θ) for θ.
++    angleWithSep: function(x, y) {
++        return Math.atan2(
++            this.x * y - this.y * x,
++            this.x * x + this.y * y);
++    },
+ 
+-    var end = pbf.readVarint() + pbf.pos,
+-        cmd = 1,
+-        length = 0,
+-        x = 0,
+-        y = 0,
+-        lines = [],
+-        line;
++    _matMult: function(m) {
++        var x = m[0] * this.x + m[1] * this.y,
++            y = m[2] * this.x + m[3] * this.y;
++        this.x = x;
++        this.y = y;
++        return this;
++    },
+ 
+-    while (pbf.pos < end) {
+-        if (!length) {
+-            var cmdLen = pbf.readVarint();
+-            cmd = cmdLen & 0x7;
+-            length = cmdLen >> 3;
+-        }
++    _add: function(p) {
++        this.x += p.x;
++        this.y += p.y;
++        return this;
++    },
+ 
+-        length--;
++    _sub: function(p) {
++        this.x -= p.x;
++        this.y -= p.y;
++        return this;
++    },
+ 
+-        if (cmd === 1 || cmd === 2) {
+-            x += pbf.readSVarint();
+-            y += pbf.readSVarint();
++    _mult: function(k) {
++        this.x *= k;
++        this.y *= k;
++        return this;
++    },
+ 
+-            if (cmd === 1) { // moveTo
+-                if (line) lines.push(line);
+-                line = [];
+-            }
++    _div: function(k) {
++        this.x /= k;
++        this.y /= k;
++        return this;
++    },
+ 
+-            line.push(new Point(x, y));
++    _unit: function() {
++        this._div(this.mag());
++        return this;
++    },
+ 
+-        } else if (cmd === 7) {
++    _perp: function() {
++        var y = this.y;
++        this.y = this.x;
++        this.x = -y;
++        return this;
++    },
+ 
+-            // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90
+-            if (line) {
+-                line.push(line[0].clone()); // closePolygon
+-            }
++    _rotate: function(angle) {
++        var cos = Math.cos(angle),
++            sin = Math.sin(angle),
++            x = cos * this.x - sin * this.y,
++            y = sin * this.x + cos * this.y;
++        this.x = x;
++        this.y = y;
++        return this;
++    },
+ 
+-        } else {
+-            throw new Error('unknown command ' + cmd);
+-        }
++    _round: function() {
++        this.x = Math.round(this.x);
++        this.y = Math.round(this.y);
++        return this;
+     }
++};
+ 
+-    if (line) lines.push(line);
+-
+-    return lines;
++// constructs Point from an array if necessary
++Point.convert = function (a) {
++    if (a instanceof Point) {
++        return a;
++    }
++    if (Array.isArray(a)) {
++        return new Point(a[0], a[1]);
++    }
++    return a;
+ };
+ 
+-VectorTileFeature.prototype.bbox = function() {
+-    var pbf = this._pbf;
+-    pbf.pos = this._geometry;
++},{}],401:[function(require,module,exports){
++module.exports = preprocessPolygon
+ 
+-    var end = pbf.readVarint() + pbf.pos,
+-        cmd = 1,
+-        length = 0,
+-        x = 0,
+-        y = 0,
+-        x1 = Infinity,
+-        x2 = -Infinity,
+-        y1 = Infinity,
+-        y2 = -Infinity;
++var orient = require('robust-orientation')[3]
++var makeSlabs = require('slab-decomposition')
++var makeIntervalTree = require('interval-tree-1d')
++var bsearch = require('binary-search-bounds')
+ 
+-    while (pbf.pos < end) {
+-        if (!length) {
+-            var cmdLen = pbf.readVarint();
+-            cmd = cmdLen & 0x7;
+-            length = cmdLen >> 3;
+-        }
++function visitInterval() {
++  return true
++}
+ 
+-        length--;
++function intervalSearch(table) {
++  return function(x, y) {
++    var tree = table[x]
++    if(tree) {
++      return !!tree.queryPoint(y, visitInterval)
++    }
++    return false
++  }
++}
+ 
+-        if (cmd === 1 || cmd === 2) {
+-            x += pbf.readSVarint();
+-            y += pbf.readSVarint();
+-            if (x < x1) x1 = x;
+-            if (x > x2) x2 = x;
+-            if (y < y1) y1 = y;
+-            if (y > y2) y2 = y;
++function buildVerticalIndex(segments) {
++  var table = {}
++  for(var i=0; i<segments.length; ++i) {
++    var s = segments[i]
++    var x = s[0][0]
++    var y0 = s[0][1]
++    var y1 = s[1][1]
++    var p = [ Math.min(y0, y1), Math.max(y0, y1) ]
++    if(x in table) {
++      table[x].push(p)
++    } else {
++      table[x] = [ p ]
++    }
++  }
++  var intervalTable = {}
++  var keys = Object.keys(table)
++  for(var i=0; i<keys.length; ++i) {
++    var segs = table[keys[i]]
++    intervalTable[keys[i]] = makeIntervalTree(segs)
++  }
++  return intervalSearch(intervalTable)
++}
+ 
+-        } else if (cmd !== 7) {
+-            throw new Error('unknown command ' + cmd);
++function buildSlabSearch(slabs, coordinates) {
++  return function(p) {
++    var bucket = bsearch.le(coordinates, p[0])
++    if(bucket < 0) {
++      return 1
++    }
++    var root = slabs[bucket]
++    if(!root) {
++      if(bucket > 0 && coordinates[bucket] === p[0]) {
++        root = slabs[bucket-1]
++      } else {
++        return 1
++      }
++    }
++    var lastOrientation = 1
++    while(root) {
++      var s = root.key
++      var o = orient(p, s[0], s[1])
++      if(s[0][0] < s[1][0]) {
++        if(o < 0) {
++          root = root.left
++        } else if(o > 0) {
++          lastOrientation = -1
++          root = root.right
++        } else {
++          return 0
++        }
++      } else {
++        if(o > 0) {
++          root = root.left
++        } else if(o < 0) {
++          lastOrientation = 1
++          root = root.right
++        } else {
++          return 0
+         }
++      }
+     }
++    return lastOrientation
++  }
++}
+ 
+-    return [x1, y1, x2, y2];
+-};
+-
+-VectorTileFeature.prototype.toGeoJSON = function(x, y, z) {
+-    var size = this.extent * Math.pow(2, z),
+-        x0 = this.extent * x,
+-        y0 = this.extent * y,
+-        coords = this.loadGeometry(),
+-        type = VectorTileFeature.types[this.type],
+-        i, j;
++function classifyEmpty(p) {
++  return 1
++}
+ 
+-    function project(line) {
+-        for (var j = 0; j < line.length; j++) {
+-            var p = line[j], y2 = 180 - (p.y + y0) * 360 / size;
+-            line[j] = [
+-                (p.x + x0) * 360 / size - 180,
+-                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
+-            ];
+-        }
++function createClassifyVertical(testVertical) {
++  return function classify(p) {
++    if(testVertical(p[0], p[1])) {
++      return 0
+     }
++    return 1
++  }
++}
+ 
+-    switch (this.type) {
+-    case 1:
+-        var points = [];
+-        for (i = 0; i < coords.length; i++) {
+-            points[i] = coords[i][0];
+-        }
+-        coords = points;
+-        project(coords);
+-        break;
++function createClassifyPointDegen(testVertical, testNormal) {
++  return function classify(p) {
++    if(testVertical(p[0], p[1])) {
++      return 0
++    }
++    return testNormal(p)
++  }
++}
+ 
+-    case 2:
+-        for (i = 0; i < coords.length; i++) {
+-            project(coords[i]);
+-        }
+-        break;
++function preprocessPolygon(loops) {
++  //Compute number of loops
++  var numLoops = loops.length
+ 
+-    case 3:
+-        coords = classifyRings(coords);
+-        for (i = 0; i < coords.length; i++) {
+-            for (j = 0; j < coords[i].length; j++) {
+-                project(coords[i][j]);
+-            }
+-        }
+-        break;
++  //Unpack segments
++  var segments = []
++  var vsegments = []
++  var ptr = 0
++  for(var i=0; i<numLoops; ++i) {
++    var loop = loops[i]
++    var numVertices = loop.length
++    for(var s=numVertices-1,t=0; t<numVertices; s=(t++)) {
++      var a = loop[s]
++      var b = loop[t]
++      if(a[0] === b[0]) {
++        vsegments.push([a,b])
++      } else {
++        segments.push([a,b])
++      }
+     }
++  }
+ 
+-    if (coords.length === 1) {
+-        coords = coords[0];
++  //Degenerate case: All loops are empty
++  if(segments.length === 0) {
++    if(vsegments.length === 0) {
++      return classifyEmpty
+     } else {
+-        type = 'Multi' + type;
+-    }
+-
+-    var result = {
+-        type: "Feature",
+-        geometry: {
+-            type: type,
+-            coordinates: coords
+-        },
+-        properties: this.properties
+-    };
+-
+-    if ('_id' in this) {
+-        result.id = this._id;
++      return createClassifyVertical(buildVerticalIndex(vsegments))
+     }
++  }
+ 
+-    return result;
+-};
++  //Build slab decomposition
++  var slabs = makeSlabs(segments)
++  var testSlab = buildSlabSearch(slabs.slabs, slabs.coordinates)
+ 
+-// classifies an array of rings into polygons with outer rings and holes
++  if(vsegments.length === 0) {
++    return testSlab
++  } else {
++    return createClassifyPointDegen(
++      buildVerticalIndex(vsegments),
++      testSlab)
++  }
++}
++},{"binary-search-bounds":48,"interval-tree-1d":225,"robust-orientation":418,"slab-decomposition":435}],402:[function(require,module,exports){
++//Optimized version for triangle closest point
++// Based on Eberly's WildMagick codes
++// http://www.geometrictools.com/LibMathematics/Distance/Distance.html
++"use strict";
+ 
+-function classifyRings(rings) {
+-    var len = rings.length;
++var diff = new Float64Array(4);
++var edge0 = new Float64Array(4);
++var edge1 = new Float64Array(4);
+ 
+-    if (len <= 1) return [rings];
++function closestPoint2d(V0, V1, V2, point, result) {
++  //Reallocate buffers if necessary
++  if(diff.length < point.length) {
++    diff = new Float64Array(point.length);
++    edge0 = new Float64Array(point.length);
++    edge1 = new Float64Array(point.length);
++  }
++  //Compute edges
++  for(var i=0; i<point.length; ++i) {
++    diff[i]  = V0[i] - point[i];
++    edge0[i] = V1[i] - V0[i];
++    edge1[i] = V2[i] - V0[i];
++  }
++  //Compute coefficients for quadratic func
++  var a00 = 0.0
++    , a01 = 0.0
++    , a11 = 0.0
++    , b0  = 0.0
++    , b1  = 0.0
++    , c   = 0.0;
++  for(var i=0; i<point.length; ++i) {
++    var e0 = edge0[i]
++      , e1 = edge1[i]
++      , d  = diff[i];
++    a00 += e0 * e0;
++    a01 += e0 * e1;
++    a11 += e1 * e1;
++    b0  += d * e0;
++    b1  += d * e1;
++    c   += d * d;
++  }
++  //Compute determinant/coeffs
++  var det = Math.abs(a00*a11 - a01*a01);
++  var s   = a01*b1 - a11*b0;
++  var t   = a01*b0 - a00*b1;
++  var sqrDistance;
++  //Hardcoded Voronoi diagram classification
++  if (s + t <= det) {
++    if (s < 0) {
++      if (t < 0) { // region 4
++        if (b0 < 0) {
++          t = 0;
++          if (-b0 >= a00) {
++            s = 1.0;
++            sqrDistance = a00 + 2.0*b0 + c;
++          } else {
++            s = -b0/a00;
++            sqrDistance = b0*s + c;
++          }
++        } else {
++          s = 0;
++          if (b1 >= 0) {
++            t = 0;
++            sqrDistance = c;
++          } else if (-b1 >= a11) {
++            t = 1;
++            sqrDistance = a11 + 2.0*b1 + c;
++          } else {
++            t = -b1/a11;
++            sqrDistance = b1*t + c;
++          }
++        }
++      } else {  // region 3
++        s = 0;
++        if (b1 >= 0) {
++          t = 0;
++          sqrDistance = c;
++        } else if (-b1 >= a11) {
++          t = 1;
++          sqrDistance = a11 + 2.0*b1 + c;
++        } else {
++          t = -b1/a11;
++          sqrDistance = b1*t + c;
++        }
++      }
++    } else if (t < 0) { // region 5
++      t = 0;
++      if (b0 >= 0) {
++        s = 0;
++        sqrDistance = c;
++      } else if (-b0 >= a00) {
++        s = 1;
++        sqrDistance = a00 + 2.0*b0 + c;
++      } else {
++        s = -b0/a00;
++        sqrDistance = b0*s + c;
++      }
++    } else {  // region 0
++      // minimum at interior point
++      var invDet = 1.0 / det;
++      s *= invDet;
++      t *= invDet;
++      sqrDistance = s*(a00*s + a01*t + 2.0*b0) + t*(a01*s + a11*t + 2.0*b1) + c;
++    }
++  } else {
++    var tmp0, tmp1, numer, denom;
++    
++    if (s < 0) {  // region 2
++      tmp0 = a01 + b0;
++      tmp1 = a11 + b1;
++      if (tmp1 > tmp0) {
++        numer = tmp1 - tmp0;
++        denom = a00 - 2.0*a01 + a11;
++        if (numer >= denom) {
++          s = 1;
++          t = 0;
++          sqrDistance = a00 + 2.0*b0 + c;
++        } else {
++          s = numer/denom;
++          t = 1 - s;
++          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
++          t*(a01*s + a11*t + 2.0*b1) + c;
++        }
++      } else {
++        s = 0;
++        if (tmp1 <= 0) {
++          t = 1;
++          sqrDistance = a11 + 2.0*b1 + c;
++        } else if (b1 >= 0) {
++          t = 0;
++          sqrDistance = c;
++        } else {
++          t = -b1/a11;
++          sqrDistance = b1*t + c;
++        }
++      }
++    } else if (t < 0) {  // region 6
++      tmp0 = a01 + b1;
++      tmp1 = a00 + b0;
++      if (tmp1 > tmp0) {
++        numer = tmp1 - tmp0;
++        denom = a00 - 2.0*a01 + a11;
++        if (numer >= denom) {
++          t = 1;
++          s = 0;
++          sqrDistance = a11 + 2.0*b1 + c;
++        } else {
++          t = numer/denom;
++          s = 1 - t;
++          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
++          t*(a01*s + a11*t + 2.0*b1) + c;
++        }
++      } else {
++        t = 0;
++        if (tmp1 <= 0) {
++          s = 1;
++          sqrDistance = a00 + 2.0*b0 + c;
++        } else if (b0 >= 0) {
++          s = 0;
++          sqrDistance = c;
++        } else {
++          s = -b0/a00;
++          sqrDistance = b0*s + c;
++        }
++      }
++    } else {  // region 1
++      numer = a11 + b1 - a01 - b0;
++      if (numer <= 0) {
++        s = 0;
++        t = 1;
++        sqrDistance = a11 + 2.0*b1 + c;
++      } else {
++        denom = a00 - 2.0*a01 + a11;
++        if (numer >= denom) {
++          s = 1;
++          t = 0;
++          sqrDistance = a00 + 2.0*b0 + c;
++        } else {
++          s = numer/denom;
++          t = 1 - s;
++          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
++          t*(a01*s + a11*t + 2.0*b1) + c;
++        }
++      }
++    }
++  }
++  var u = 1.0 - s - t;
++  for(var i=0; i<point.length; ++i) {
++    result[i] = u * V0[i] + s * V1[i] + t * V2[i];
++  }
++  if(sqrDistance < 0) {
++    return 0;
++  }
++  return sqrDistance;
++}
+ 
+-    var polygons = [],
+-        polygon,
+-        ccw;
++module.exports = closestPoint2d;
+ 
+-    for (var i = 0; i < len; i++) {
+-        var area = signedArea(rings[i]);
+-        if (area === 0) continue;
++},{}],403:[function(require,module,exports){
++// shim for using process in browser
++var process = module.exports = {};
+ 
+-        if (ccw === undefined) ccw = area < 0;
++// cached from whatever global is present so that test runners that stub it
++// don't break things.  But we need to wrap it in a try catch in case it is
++// wrapped in strict mode code which doesn't define any globals.  It's inside a
++// function because try/catches deoptimize in certain engines.
+ 
+-        if (ccw === area < 0) {
+-            if (polygon) polygons.push(polygon);
+-            polygon = [rings[i]];
++var cachedSetTimeout;
++var cachedClearTimeout;
+ 
++function defaultSetTimout() {
++    throw new Error('setTimeout has not been defined');
++}
++function defaultClearTimeout () {
++    throw new Error('clearTimeout has not been defined');
++}
++(function () {
++    try {
++        if (typeof setTimeout === 'function') {
++            cachedSetTimeout = setTimeout;
+         } else {
+-            polygon.push(rings[i]);
++            cachedSetTimeout = defaultSetTimout;
+         }
++    } catch (e) {
++        cachedSetTimeout = defaultSetTimout;
+     }
+-    if (polygon) polygons.push(polygon);
+-
+-    return polygons;
+-}
+-
+-function signedArea(ring) {
+-    var sum = 0;
+-    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
+-        p1 = ring[i];
+-        p2 = ring[j];
+-        sum += (p2.x - p1.x) * (p1.y + p2.y);
++    try {
++        if (typeof clearTimeout === 'function') {
++            cachedClearTimeout = clearTimeout;
++        } else {
++            cachedClearTimeout = defaultClearTimeout;
++        }
++    } catch (e) {
++        cachedClearTimeout = defaultClearTimeout;
++    }
++} ())
++function runTimeout(fun) {
++    if (cachedSetTimeout === setTimeout) {
++        //normal enviroments in sane situations
++        return setTimeout(fun, 0);
++    }
++    // if setTimeout wasn't available but was latter defined
++    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
++        cachedSetTimeout = setTimeout;
++        return setTimeout(fun, 0);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedSetTimeout(fun, 0);
++    } catch(e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
++            return cachedSetTimeout.call(null, fun, 0);
++        } catch(e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
++            return cachedSetTimeout.call(this, fun, 0);
++        }
+     }
+-    return sum;
+-}
+-
+-},{"point-geometry":404}],416:[function(require,module,exports){
+-'use strict';
+-
+-var VectorTileFeature = require('./vectortilefeature.js');
+ 
+-module.exports = VectorTileLayer;
+ 
+-function VectorTileLayer(pbf, end) {
+-    // Public
+-    this.version = 1;
+-    this.name = null;
+-    this.extent = 4096;
+-    this.length = 0;
++}
++function runClearTimeout(marker) {
++    if (cachedClearTimeout === clearTimeout) {
++        //normal enviroments in sane situations
++        return clearTimeout(marker);
++    }
++    // if clearTimeout wasn't available but was latter defined
++    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
++        cachedClearTimeout = clearTimeout;
++        return clearTimeout(marker);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedClearTimeout(marker);
++    } catch (e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
++            return cachedClearTimeout.call(null, marker);
++        } catch (e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
++            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
++            return cachedClearTimeout.call(this, marker);
++        }
++    }
+ 
+-    // Private
+-    this._pbf = pbf;
+-    this._keys = [];
+-    this._values = [];
+-    this._features = [];
+ 
+-    pbf.readFields(readLayer, this, end);
+ 
+-    this.length = this._features.length;
+ }
++var queue = [];
++var draining = false;
++var currentQueue;
++var queueIndex = -1;
+ 
+-function readLayer(tag, layer, pbf) {
+-    if (tag === 15) layer.version = pbf.readVarint();
+-    else if (tag === 1) layer.name = pbf.readString();
+-    else if (tag === 5) layer.extent = pbf.readVarint();
+-    else if (tag === 2) layer._features.push(pbf.pos);
+-    else if (tag === 3) layer._keys.push(pbf.readString());
+-    else if (tag === 4) layer._values.push(readValueMessage(pbf));
++function cleanUpNextTick() {
++    if (!draining || !currentQueue) {
++        return;
++    }
++    draining = false;
++    if (currentQueue.length) {
++        queue = currentQueue.concat(queue);
++    } else {
++        queueIndex = -1;
++    }
++    if (queue.length) {
++        drainQueue();
++    }
+ }
+ 
+-function readValueMessage(pbf) {
+-    var value = null,
+-        end = pbf.readVarint() + pbf.pos;
++function drainQueue() {
++    if (draining) {
++        return;
++    }
++    var timeout = runTimeout(cleanUpNextTick);
++    draining = true;
+ 
+-    while (pbf.pos < end) {
+-        var tag = pbf.readVarint() >> 3;
++    var len = queue.length;
++    while(len) {
++        currentQueue = queue;
++        queue = [];
++        while (++queueIndex < len) {
++            if (currentQueue) {
++                currentQueue[queueIndex].run();
++            }
++        }
++        queueIndex = -1;
++        len = queue.length;
++    }
++    currentQueue = null;
++    draining = false;
++    runClearTimeout(timeout);
++}
+ 
+-        value = tag === 1 ? pbf.readString() :
+-            tag === 2 ? pbf.readFloat() :
+-            tag === 3 ? pbf.readDouble() :
+-            tag === 4 ? pbf.readVarint64() :
+-            tag === 5 ? pbf.readVarint() :
+-            tag === 6 ? pbf.readSVarint() :
+-            tag === 7 ? pbf.readBoolean() : null;
++process.nextTick = function (fun) {
++    var args = new Array(arguments.length - 1);
++    if (arguments.length > 1) {
++        for (var i = 1; i < arguments.length; i++) {
++            args[i - 1] = arguments[i];
++        }
++    }
++    queue.push(new Item(fun, args));
++    if (queue.length === 1 && !draining) {
++        runTimeout(drainQueue);
+     }
++};
+ 
+-    return value;
++// v8 likes predictible objects
++function Item(fun, array) {
++    this.fun = fun;
++    this.array = array;
+ }
++Item.prototype.run = function () {
++    this.fun.apply(null, this.array);
++};
++process.title = 'browser';
++process.browser = true;
++process.env = {};
++process.argv = [];
++process.version = ''; // empty string to avoid regexp issues
++process.versions = {};
+ 
+-// return feature `i` from this layer as a `VectorTileFeature`
+-VectorTileLayer.prototype.feature = function(i) {
+-    if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');
++function noop() {}
+ 
+-    this._pbf.pos = this._features[i];
++process.on = noop;
++process.addListener = noop;
++process.once = noop;
++process.off = noop;
++process.removeListener = noop;
++process.removeAllListeners = noop;
++process.emit = noop;
+ 
+-    var end = this._pbf.readVarint() + this._pbf.pos;
+-    return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);
++process.binding = function (name) {
++    throw new Error('process.binding is not supported');
+ };
+ 
+-},{"./vectortilefeature.js":415}],417:[function(require,module,exports){
+-var Pbf = require('pbf')
+-var vtpb = require('./vector-tile-pb')
+-var GeoJSONWrapper = require('./lib/geojson_wrapper')
++process.cwd = function () { return '/' };
++process.chdir = function (dir) {
++    throw new Error('process.chdir is not supported');
++};
++process.umask = function() { return 0; };
+ 
+-module.exports = fromVectorTileJs
+-module.exports.fromVectorTileJs = fromVectorTileJs
+-module.exports.fromGeojsonVt = fromGeojsonVt
+-module.exports.GeoJSONWrapper = GeoJSONWrapper
++},{}],404:[function(require,module,exports){
++module.exports = require('gl-quat/slerp')
++},{"gl-quat/slerp":176}],405:[function(require,module,exports){
++'use strict'
+ 
+-/**
+- * Serialize a vector-tile-js-created tile to pbf
+- *
+- * @param {Object} tile
+- * @return {Buffer} uncompressed, pbf-serialized tile data
+- */
+-function fromVectorTileJs (tile) {
+-  var layers = []
+-  for (var l in tile.layers) {
+-    layers.push(prepareLayer(tile.layers[l]))
+-  }
++var bnadd = require('big-rat/add')
+ 
+-  var out = new Pbf()
+-  vtpb.tile.write({ layers: layers }, out)
+-  return out.finish()
+-}
++module.exports = add
+ 
+-/**
+- * Serialized a geojson-vt-created tile to pbf.
+- *
+- * @param {Object} layers - An object mapping layer names to geojson-vt-created vector tile objects
+- * @return {Buffer} uncompressed, pbf-serialized tile data
+- */
+-function fromGeojsonVt (layers) {
+-  var l = {}
+-  for (var k in layers) {
+-    l[k] = new GeoJSONWrapper(layers[k].features)
+-    l[k].name = k
++function add(a, b) {
++  var n = a.length
++  var r = new Array(n)
++    for(var i=0; i<n; ++i) {
++    r[i] = bnadd(a[i], b[i])
+   }
+-  return fromVectorTileJs({layers: l})
++  return r
+ }
+ 
+-/**
+- * Prepare the given layer to be serialized by the auto-generated pbf
+- * serializer by encoding the feature geometry and properties.
+- */
+-function prepareLayer (layer) {
+-  var preparedLayer = {
+-    name: layer.name || '',
+-    version: layer.version || 1,
+-    extent: layer.extent || 4096,
+-    keys: [],
+-    values: [],
+-    features: []
+-  }
+-
+-  var keycache = {}
+-  var valuecache = {}
++},{"big-rat/add":32}],406:[function(require,module,exports){
++'use strict'
+ 
+-  for (var i = 0; i < layer.length; i++) {
+-    var feature = layer.feature(i)
+-    feature.geometry = encodeGeometry(feature.loadGeometry())
++module.exports = float2rat
+ 
+-    var tags = []
+-    for (var key in feature.properties) {
+-      var keyIndex = keycache[key]
+-      if (typeof keyIndex === 'undefined') {
+-        preparedLayer.keys.push(key)
+-        keyIndex = preparedLayer.keys.length - 1
+-        keycache[key] = keyIndex
+-      }
+-      var value = wrapValue(feature.properties[key])
+-      var valueIndex = valuecache[value.key]
+-      if (typeof valueIndex === 'undefined') {
+-        preparedLayer.values.push(value)
+-        valueIndex = preparedLayer.values.length - 1
+-        valuecache[value.key] = valueIndex
+-      }
+-      tags.push(keyIndex)
+-      tags.push(valueIndex)
+-    }
++var rat = require('big-rat')
+ 
+-    feature.tags = tags
+-    preparedLayer.features.push(feature)
++function float2rat(v) {
++  var result = new Array(v.length)
++  for(var i=0; i<v.length; ++i) {
++    result[i] = rat(v[i])
+   }
+-
+-  return preparedLayer
+-}
+-
+-function command (cmd, length) {
+-  return (length << 3) + (cmd & 0x7)
++  return result
+ }
+ 
+-function zigzag (num) {
+-  return (num << 1) ^ (num >> 31)
+-}
++},{"big-rat":35}],407:[function(require,module,exports){
++'use strict'
+ 
+-/**
+- * Encode a polygon's geometry into an array ready to be serialized
+- * to mapbox vector tile specified geometry data.
+- *
+- * @param {Array} Rings, each being an array of [x, y] tile-space coordinates
+- * @return {Array} encoded geometry
+- */
+-function encodeGeometry (geometry) {
+-  var encoded = []
+-  var x = 0
+-  var y = 0
+-  var rings = geometry.length
+-  for (var r = 0; r < rings; r++) {
+-    var ring = geometry[r]
+-    encoded.push(command(1, 1)) // moveto
+-    for (var i = 0; i < ring.length; i++) {
+-      if (i === 1) {
+-        encoded.push(command(2, ring.length - 1)) // lineto
+-      }
+-      var dx = ring[i].x - x
+-      var dy = ring[i].y - y
+-      encoded.push(zigzag(dx), zigzag(dy))
+-      x += dx
+-      y += dy
+-    }
+-  }
++var rat = require('big-rat')
++var mul = require('big-rat/mul')
+ 
+-  return encoded
+-}
++module.exports = muls
+ 
+-/**
+- * Wrap a property value according to its type. The returned object
+- * is of the form { xxxx_value: primitiveValue }, which is what the generated
+- * protobuf serializer expects.
+- */
+-function wrapValue (value) {
+-  var result
+-  var type = typeof value
+-  if (type === 'string') {
+-    result = { string_value: value }
+-  } else if (type === 'boolean') {
+-    result = { bool_value: value }
+-  } else if (type === 'number') {
+-    if (value !== (value | 0)) {
+-      result = { float_value: value }
+-    } else if (value < 0) {
+-      result = { sint_value: value }
+-    } else {
+-      result = { uint_value: value }
+-    }
+-  } else {
+-    result = { string_value: '' + value }
++function muls(a, x) {
++  var s = rat(x)
++  var n = a.length
++  var r = new Array(n)
++  for(var i=0; i<n; ++i) {
++    r[i] = mul(a[i], s)
+   }
+-
+-  result.key = type + ':' + value
+-  return result
++  return r
+ }
+ 
+-},{"./lib/geojson_wrapper":418,"./vector-tile-pb":419,"pbf":402}],418:[function(require,module,exports){
++},{"big-rat":35,"big-rat/mul":44}],408:[function(require,module,exports){
+ 'use strict'
+ 
+-var Point = require('point-geometry')
+-var VectorTileFeature = require('vector-tile').VectorTileFeature
++var bnsub = require('big-rat/sub')
+ 
+-module.exports = GeoJSONWrapper
++module.exports = sub
+ 
+-// conform to vectortile api
+-function GeoJSONWrapper (features) {
+-  this.features = features
+-  this.length = features.length
++function sub(a, b) {
++  var n = a.length
++  var r = new Array(n)
++    for(var i=0; i<n; ++i) {
++    r[i] = bnsub(a[i], b[i])
++  }
++  return r
+ }
+ 
+-GeoJSONWrapper.prototype.feature = function (i) {
+-  return new FeatureWrapper(this.features[i])
+-}
++},{"big-rat/sub":46}],409:[function(require,module,exports){
++'use strict'
+ 
+-function FeatureWrapper (feature) {
+-  this.type = feature.type
+-  this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry
+-  this.properties = feature.tags
+-  this.extent = 4096
+-}
++var compareCell = require('compare-cell')
++var compareOrientedCell = require('compare-oriented-cell')
++var orientation = require('cell-orientation')
+ 
+-FeatureWrapper.prototype.loadGeometry = function () {
+-  var rings = this.rawGeometry
+-  this.geometry = []
++module.exports = reduceCellComplex
+ 
+-  for (var i = 0; i < rings.length; i++) {
+-    var ring = rings[i]
+-    var newRing = []
+-    for (var j = 0; j < ring.length; j++) {
+-      newRing.push(new Point(ring[j][0], ring[j][1]))
++function reduceCellComplex(cells) {
++  cells.sort(compareOrientedCell)
++  var n = cells.length
++  var ptr = 0
++  for(var i=0; i<n; ++i) {
++    var c = cells[i]
++    var o = orientation(c)
++    if(o === 0) {
++      continue
+     }
+-    this.geometry.push(newRing)
++    if(ptr > 0) {
++      var f = cells[ptr-1]
++      if(compareCell(c, f) === 0 &&
++         orientation(f)    !== o) {
++        ptr -= 1
++        continue
++      }
++    }
++    cells[ptr++] = c
+   }
+-  return this.geometry
++  cells.length = ptr
++  return cells
+ }
+ 
+-FeatureWrapper.prototype.bbox = function () {
+-  if (!this.geometry) this.loadGeometry()
++},{"cell-orientation":68,"compare-cell":77,"compare-oriented-cell":78}],410:[function(require,module,exports){
++/*!
++ * repeat-string <https://github.com/jonschlinkert/repeat-string>
++ *
++ * Copyright (c) 2014-2015, Jon Schlinkert.
++ * Licensed under the MIT License.
++ */
+ 
+-  var rings = this.geometry
+-  var x1 = Infinity
+-  var x2 = -Infinity
+-  var y1 = Infinity
+-  var y2 = -Infinity
++'use strict';
+ 
+-  for (var i = 0; i < rings.length; i++) {
+-    var ring = rings[i]
++/**
++ * Results cache
++ */
+ 
+-    for (var j = 0; j < ring.length; j++) {
+-      var coord = ring[j]
++var res = '';
++var cache;
+ 
+-      x1 = Math.min(x1, coord.x)
+-      x2 = Math.max(x2, coord.x)
+-      y1 = Math.min(y1, coord.y)
+-      y2 = Math.max(y2, coord.y)
+-    }
+-  }
++/**
++ * Expose `repeat`
++ */
+ 
+-  return [x1, y1, x2, y2]
+-}
++module.exports = repeat;
+ 
+-FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON
++/**
++ * Repeat the given `string` the specified `number`
++ * of times.
++ *
++ * **Example:**
++ *
++ * ```js
++ * var repeat = require('repeat-string');
++ * repeat('A', 5);
++ * //=> AAAAA
++ * ```
++ *
++ * @param {String} `string` The string to repeat
++ * @param {Number} `number` The number of times to repeat the string
++ * @return {String} Repeated string
++ * @api public
++ */
+ 
+-},{"point-geometry":404,"vector-tile":413}],419:[function(require,module,exports){
+-'use strict';
++function repeat(str, num) {
++  if (typeof str !== 'string') {
++    throw new TypeError('repeat-string expects a string.');
++  }
+ 
+-// tile ========================================
++  // cover common, quick use cases
++  if (num === 1) return str;
++  if (num === 2) return str + str;
+ 
+-var tile = exports.tile = {read: readTile, write: writeTile};
++  var max = str.length * num;
++  if (cache !== str || typeof cache === 'undefined') {
++    cache = str;
++    res = '';
++  }
+ 
+-tile.GeomType = {
+-    "Unknown": 0,
+-    "Point": 1,
+-    "LineString": 2,
+-    "Polygon": 3
+-};
++  while (max > res.length && num > 0) {
++    if (num & 1) {
++      res += str;
++    }
+ 
+-function readTile(pbf, end) {
+-    return pbf.readFields(readTileField, {"layers": []}, end);
+-}
++    num >>= 1;
++    if (!num) break;
++    str += str;
++  }
+ 
+-function readTileField(tag, tile, pbf) {
+-    if (tag === 3) tile.layers.push(readLayer(pbf, pbf.readVarint() + pbf.pos));
++  return res.substr(0, max);
+ }
+ 
+-function writeTile(tile, pbf) {
+-    var i;
+-    if (tile.layers !== undefined) for (i = 0; i < tile.layers.length; i++) pbf.writeMessage(3, writeLayer, tile.layers[i]);
+-}
+ 
+-// value ========================================
++},{}],411:[function(require,module,exports){
++// Copyright 2014 Simon Lydell
++// X11 (“MIT”) Licensed. (See LICENSE.)
++
++void (function(root, factory) {
++  if (typeof define === "function" && define.amd) {
++    define(factory)
++  } else if (typeof exports === "object") {
++    module.exports = factory()
++  } else {
++    root.resolveUrl = factory()
++  }
++}(this, function() {
++
++  function resolveUrl(/* ...urls */) {
++    var numUrls = arguments.length
++
++    if (numUrls === 0) {
++      throw new Error("resolveUrl requires at least one argument; got none.")
++    }
++
++    var base = document.createElement("base")
++    base.href = arguments[0]
++
++    if (numUrls === 1) {
++      return base.href
++    }
++
++    var head = document.getElementsByTagName("head")[0]
++    head.insertBefore(base, head.firstChild)
++
++    var a = document.createElement("a")
++    var resolved
++
++    for (var index = 1; index < numUrls; index++) {
++      a.href = arguments[index]
++      resolved = a.href
++      base.href = resolved
++    }
++
++    head.removeChild(base)
++
++    return resolved
++  }
++
++  return resolveUrl
++
++}));
+ 
+-tile.value = {read: readValue, write: writeValue};
++},{}],412:[function(require,module,exports){
++(function (global){
++module.exports =
++  global.performance &&
++  global.performance.now ? function now() {
++    return performance.now()
++  } : Date.now || function now() {
++    return +new Date
++  }
+ 
+-function readValue(pbf, end) {
+-    return pbf.readFields(readValueField, {}, end);
+-}
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{}],413:[function(require,module,exports){
++"use strict"
+ 
+-function readValueField(tag, value, pbf) {
+-    if (tag === 1) value.string_value = pbf.readString();
+-    else if (tag === 2) value.float_value = pbf.readFloat();
+-    else if (tag === 3) value.double_value = pbf.readDouble();
+-    else if (tag === 4) value.int_value = pbf.readVarint();
+-    else if (tag === 5) value.uint_value = pbf.readVarint();
+-    else if (tag === 6) value.sint_value = pbf.readSVarint();
+-    else if (tag === 7) value.bool_value = pbf.readBoolean();
+-}
++module.exports = compressExpansion
+ 
+-function writeValue(value, pbf) {
+-    if (value.string_value !== undefined) pbf.writeStringField(1, value.string_value);
+-    if (value.float_value !== undefined) pbf.writeFloatField(2, value.float_value);
+-    if (value.double_value !== undefined) pbf.writeDoubleField(3, value.double_value);
+-    if (value.int_value !== undefined) pbf.writeVarintField(4, value.int_value);
+-    if (value.uint_value !== undefined) pbf.writeVarintField(5, value.uint_value);
+-    if (value.sint_value !== undefined) pbf.writeSVarintField(6, value.sint_value);
+-    if (value.bool_value !== undefined) pbf.writeBooleanField(7, value.bool_value);
++function compressExpansion(e) {
++  var m = e.length
++  var Q = e[e.length-1]
++  var bottom = m
++  for(var i=m-2; i>=0; --i) {
++    var a = Q
++    var b = e[i]
++    Q = a + b
++    var bv = Q - a
++    var q = b - bv
++    if(q) {
++      e[--bottom] = Q
++      Q = q
++    }
++  }
++  var top = 0
++  for(var i=bottom; i<m; ++i) {
++    var a = e[i]
++    var b = Q
++    Q = a + b
++    var bv = Q - a
++    var q = b - bv
++    if(q) {
++      e[top++] = q
++    }
++  }
++  e[top++] = Q
++  e.length = top
++  return e
+ }
++},{}],414:[function(require,module,exports){
++"use strict"
+ 
+-// feature ========================================
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
++var robustScale = require("robust-scale")
++var compress = require("robust-compress")
+ 
+-tile.feature = {read: readFeature, write: writeFeature};
++var NUM_EXPANDED = 6
+ 
+-function readFeature(pbf, end) {
+-    var feature = pbf.readFields(readFeatureField, {}, end);
+-    if (feature.type === undefined) feature.type = "Unknown";
+-    return feature;
++function cofactor(m, c) {
++  var result = new Array(m.length-1)
++  for(var i=1; i<m.length; ++i) {
++    var r = result[i-1] = new Array(m.length-1)
++    for(var j=0,k=0; j<m.length; ++j) {
++      if(j === c) {
++        continue
++      }
++      r[k++] = m[i][j]
++    }
++  }
++  return result
+ }
+ 
+-function readFeatureField(tag, feature, pbf) {
+-    if (tag === 1) feature.id = pbf.readVarint();
+-    else if (tag === 2) feature.tags = pbf.readPackedVarint();
+-    else if (tag === 3) feature.type = pbf.readVarint();
+-    else if (tag === 4) feature.geometry = pbf.readPackedVarint();
++function matrix(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = new Array(n)
++    for(var j=0; j<n; ++j) {
++      result[i][j] = ["m[", i, "][", j, "]"].join("")
++    }
++  }
++  return result
+ }
+ 
+-function writeFeature(feature, pbf) {
+-    if (feature.id !== undefined) pbf.writeVarintField(1, feature.id);
+-    if (feature.tags !== undefined) pbf.writePackedVarint(2, feature.tags);
+-    if (feature.type !== undefined) pbf.writeVarintField(3, feature.type);
+-    if (feature.geometry !== undefined) pbf.writePackedVarint(4, feature.geometry);
++function sign(n) {
++  if(n & 1) {
++    return "-"
++  }
++  return ""
+ }
+ 
+-// layer ========================================
+-
+-tile.layer = {read: readLayer, write: writeLayer};
+-
+-function readLayer(pbf, end) {
+-    return pbf.readFields(readLayerField, {"features": [], "keys": [], "values": []}, end);
++function generateSum(expr) {
++  if(expr.length === 1) {
++    return expr[0]
++  } else if(expr.length === 2) {
++    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  } else {
++    var m = expr.length>>1
++    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++  }
+ }
+ 
+-function readLayerField(tag, layer, pbf) {
+-    if (tag === 15) layer.version = pbf.readVarint();
+-    else if (tag === 1) layer.name = pbf.readString();
+-    else if (tag === 2) layer.features.push(readFeature(pbf, pbf.readVarint() + pbf.pos));
+-    else if (tag === 3) layer.keys.push(pbf.readString());
+-    else if (tag === 4) layer.values.push(readValue(pbf, pbf.readVarint() + pbf.pos));
+-    else if (tag === 5) layer.extent = pbf.readVarint();
++function determinant(m) {
++  if(m.length === 2) {
++    return ["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")
++  } else {
++    var expr = []
++    for(var i=0; i<m.length; ++i) {
++      expr.push(["scale(", determinant(cofactor(m, i)), ",", sign(i), m[0][i], ")"].join(""))
++    }
++    return generateSum(expr)
++  }
+ }
+ 
+-function writeLayer(layer, pbf) {
+-    if (layer.version !== undefined) pbf.writeVarintField(15, layer.version);
+-    if (layer.name !== undefined) pbf.writeStringField(1, layer.name);
+-    var i;
+-    if (layer.features !== undefined) for (i = 0; i < layer.features.length; i++) pbf.writeMessage(2, writeFeature, layer.features[i]);
+-    if (layer.keys !== undefined) for (i = 0; i < layer.keys.length; i++) pbf.writeStringField(3, layer.keys[i]);
+-    if (layer.values !== undefined) for (i = 0; i < layer.values.length; i++) pbf.writeMessage(4, writeValue, layer.values[i]);
+-    if (layer.extent !== undefined) pbf.writeVarintField(5, layer.extent);
++function compileDeterminant(n) {
++  var proc = new Function("sum", "scale", "prod", "compress", [
++    "function robustDeterminant",n, "(m){return compress(", 
++      determinant(matrix(n)),
++    ")};return robustDeterminant", n].join(""))
++  return proc(robustSum, robustScale, twoProduct, compress)
+ }
+ 
+-},{}],420:[function(require,module,exports){
+-var bundleFn = arguments[3];
+-var sources = arguments[4];
+-var cache = arguments[5];
++var CACHE = [
++  function robustDeterminant0() { return [0] },
++  function robustDeterminant1(m) { return [m[0][0]] }
++]
+ 
+-var stringify = JSON.stringify;
++function generateDispatch() {
++  while(CACHE.length < NUM_EXPANDED) {
++    CACHE.push(compileDeterminant(CACHE.length))
++  }
++  var procArgs = []
++  var code = ["function robustDeterminant(m){switch(m.length){"]
++  for(var i=0; i<NUM_EXPANDED; ++i) {
++    procArgs.push("det" + i)
++    code.push("case ", i, ":return det", i, "(m);")
++  }
++  code.push("}\
++var det=CACHE[m.length];\
++if(!det)\
++det=CACHE[m.length]=gen(m.length);\
++return det(m);\
++}\
++return robustDeterminant")
++  procArgs.push("CACHE", "gen", code.join(""))
++  var proc = Function.apply(undefined, procArgs)
++  module.exports = proc.apply(undefined, CACHE.concat([CACHE, compileDeterminant]))
++  for(var i=0; i<CACHE.length; ++i) {
++    module.exports[i] = CACHE[i]
++  }
++}
+ 
+-module.exports = function (fn, options) {
+-    var wkey;
+-    var cacheKeys = Object.keys(cache);
++generateDispatch()
++},{"robust-compress":413,"robust-scale":420,"robust-sum":423,"two-product":447}],415:[function(require,module,exports){
++"use strict"
+ 
+-    for (var i = 0, l = cacheKeys.length; i < l; i++) {
+-        var key = cacheKeys[i];
+-        var exp = cache[key].exports;
+-        // Using babel as a transpiler to use esmodule, the export will always
+-        // be an object with the default export as a property of it. To ensure
+-        // the existing api and babel esmodule exports are both supported we
+-        // check for both
+-        if (exp === fn || exp && exp.default === fn) {
+-            wkey = key;
+-            break;
+-        }
+-    }
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
+ 
+-    if (!wkey) {
+-        wkey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
+-        var wcache = {};
+-        for (var i = 0, l = cacheKeys.length; i < l; i++) {
+-            var key = cacheKeys[i];
+-            wcache[key] = key;
+-        }
+-        sources[wkey] = [
+-            Function(['require','module','exports'], '(' + fn + ')(self)'),
+-            wcache
+-        ];
+-    }
+-    var skey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
++module.exports = robustDotProduct
+ 
+-    var scache = {}; scache[wkey] = wkey;
+-    sources[skey] = [
+-        Function(['require'], (
+-            // try to call default if defined to also support babel esmodule
+-            // exports
+-            'var f = require(' + stringify(wkey) + ');' +
+-            '(f.default ? f.default : f)(self);'
+-        )),
+-        scache
+-    ];
++function robustDotProduct(a, b) {
++  var r = twoProduct(a[0], b[0])
++  for(var i=1; i<a.length; ++i) {
++    r = robustSum(r, twoProduct(a[i], b[i]))
++  }
++  return r
++}
++},{"robust-sum":423,"two-product":447}],416:[function(require,module,exports){
++"use strict"
+ 
+-    var src = '(' + bundleFn + ')({'
+-        + Object.keys(sources).map(function (key) {
+-            return stringify(key) + ':['
+-                + sources[key][0]
+-                + ',' + stringify(sources[key][1]) + ']'
+-            ;
+-        }).join(',')
+-        + '},{},[' + stringify(skey) + '])'
+-    ;
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
++var robustDiff = require("robust-subtract")
++var robustScale = require("robust-scale")
+ 
+-    var URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
++var NUM_EXPAND = 6
+ 
+-    var blob = new Blob([src], { type: 'text/javascript' });
+-    if (options && options.bare) { return blob; }
+-    var workerUrl = URL.createObjectURL(blob);
+-    var worker = new Worker(workerUrl);
+-    if (typeof URL.revokeObjectURL == "function") {
+-      URL.revokeObjectURL(workerUrl);
++function cofactor(m, c) {
++  var result = new Array(m.length-1)
++  for(var i=1; i<m.length; ++i) {
++    var r = result[i-1] = new Array(m.length-1)
++    for(var j=0,k=0; j<m.length; ++j) {
++      if(j === c) {
++        continue
++      }
++      r[k++] = m[i][j]
+     }
+-    return worker;
+-};
+-
+-},{}],421:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = mouseListen
+-
+-var mouse = require('mouse-event')
+-
+-function mouseListen(element, callback) {
+-
+-  if(!callback) {
+-    callback = element
+-    element = window
+   }
++  return result
++}
+ 
+-  var buttonState = 0
+-  var x = 0
+-  var y = 0
+-  var mods = {
+-    shift:   false,
+-    alt:     false,
+-    control: false,
+-    meta:    false
++function matrix(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = new Array(n)
++    for(var j=0; j<n; ++j) {
++      result[i][j] = ["m", j, "[", (n-i-2), "]"].join("")
++    }
+   }
+-  var attached = false
++  return result
++}
+ 
+-  function updateMods(ev) {
+-    var changed = false
+-    if('altKey' in ev) {
+-      changed = changed || ev.altKey !== mods.alt
+-      mods.alt = !!ev.altKey
+-    }
+-    if('shiftKey' in ev) {
+-      changed = changed || ev.shiftKey !== mods.shift
+-      mods.shift = !!ev.shiftKey
+-    }
+-    if('ctrlKey' in ev) {
+-      changed = changed || ev.ctrlKey !== mods.control
+-      mods.control = !!ev.ctrlKey
+-    }
+-    if('metaKey' in ev) {
+-      changed = changed || ev.metaKey !== mods.meta
+-      mods.meta = !!ev.metaKey
+-    }
+-    return changed
++function generateSum(expr) {
++  if(expr.length === 1) {
++    return expr[0]
++  } else if(expr.length === 2) {
++    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  } else {
++    var m = expr.length>>1
++    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
+   }
++}
+ 
+-  function handleEvent(nextButtons, ev) {
+-    var nextX = mouse.x(ev)
+-    var nextY = mouse.y(ev)
+-    if('buttons' in ev) {
+-      nextButtons = ev.buttons|0
+-    }
+-    if(nextButtons !== buttonState ||
+-       nextX !== x ||
+-       nextY !== y ||
+-       updateMods(ev)) {
+-      buttonState = nextButtons|0
+-      x = nextX||0
+-      y = nextY||0
+-      callback(buttonState, x, y, mods)
++function makeProduct(a, b) {
++  if(a.charAt(0) === "m") {
++    if(b.charAt(0) === "w") {
++      var toks = a.split("[")
++      return ["w", b.substr(1), "m", toks[0].substr(1)].join("")
++    } else {
++      return ["prod(", a, ",", b, ")"].join("")
+     }
++  } else {
++    return makeProduct(b, a)
+   }
++}
+ 
+-  function clearState(ev) {
+-    handleEvent(0, ev)
++function sign(s) {
++  if(s & 1 !== 0) {
++    return "-"
+   }
++  return ""
++}
+ 
+-  function handleBlur() {
+-    if(buttonState ||
+-      x ||
+-      y ||
+-      mods.shift ||
+-      mods.alt ||
+-      mods.meta ||
+-      mods.control) {
+-
+-      x = y = 0
+-      buttonState = 0
+-      mods.shift = mods.alt = mods.control = mods.meta = false
+-      callback(0, 0, 0, mods)
++function determinant(m) {
++  if(m.length === 2) {
++    return [["diff(", makeProduct(m[0][0], m[1][1]), ",", makeProduct(m[1][0], m[0][1]), ")"].join("")]
++  } else {
++    var expr = []
++    for(var i=0; i<m.length; ++i) {
++      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
+     }
++    return expr
+   }
++}
+ 
+-  function handleMods(ev) {
+-    if(updateMods(ev)) {
+-      callback(buttonState, x, y, mods)
+-    }
++function makeSquare(d, n) {
++  var terms = []
++  for(var i=0; i<n-2; ++i) {
++    terms.push(["prod(m", d, "[", i, "],m", d, "[", i, "])"].join(""))
+   }
++  return generateSum(terms)
++}
+ 
+-  function handleMouseMove(ev) {
+-    if(mouse.buttons(ev) === 0) {
+-      handleEvent(0, ev)
++function orientation(n) {
++  var pos = []
++  var neg = []
++  var m = matrix(n)
++  for(var i=0; i<n; ++i) {
++    m[0][i] = "1"
++    m[n-1][i] = "w"+i
++  } 
++  for(var i=0; i<n; ++i) {
++    if((i&1)===0) {
++      pos.push.apply(pos,determinant(cofactor(m, i)))
+     } else {
+-      handleEvent(buttonState, ev)
++      neg.push.apply(neg,determinant(cofactor(m, i)))
+     }
+   }
+-
+-  function handleMouseDown(ev) {
+-    handleEvent(buttonState | mouse.buttons(ev), ev)
++  var posExpr = generateSum(pos)
++  var negExpr = generateSum(neg)
++  var funcName = "exactInSphere" + n
++  var funcArgs = []
++  for(var i=0; i<n; ++i) {
++    funcArgs.push("m" + i)
+   }
+-
+-  function handleMouseUp(ev) {
+-    handleEvent(buttonState & ~mouse.buttons(ev), ev)
++  var code = ["function ", funcName, "(", funcArgs.join(), "){"]
++  for(var i=0; i<n; ++i) {
++    code.push("var w",i,"=",makeSquare(i,n),";")
++    for(var j=0; j<n; ++j) {
++      if(j !== i) {
++        code.push("var w",i,"m",j,"=scale(w",i,",m",j,"[0]);")
++      }
++    }
+   }
++  code.push("var p=", posExpr, ",n=", negExpr, ",d=diff(p,n);return d[d.length-1];}return ", funcName)
++  var proc = new Function("sum", "diff", "prod", "scale", code.join(""))
++  return proc(robustSum, robustDiff, twoProduct, robustScale)
++}
+ 
+-  function attachListeners() {
+-    if(attached) {
+-      return
+-    }
+-    attached = true
++function inSphere0() { return 0 }
++function inSphere1() { return 0 }
++function inSphere2() { return 0 }
+ 
+-    element.addEventListener('mousemove', handleMouseMove)
++var CACHED = [
++  inSphere0,
++  inSphere1,
++  inSphere2
++]
+ 
+-    element.addEventListener('mousedown', handleMouseDown)
++function slowInSphere(args) {
++  var proc = CACHED[args.length]
++  if(!proc) {
++    proc = CACHED[args.length] = orientation(args.length)
++  }
++  return proc.apply(undefined, args)
++}
+ 
+-    element.addEventListener('mouseup', handleMouseUp)
++function generateInSphereTest() {
++  while(CACHED.length <= NUM_EXPAND) {
++    CACHED.push(orientation(CACHED.length))
++  }
++  var args = []
++  var procArgs = ["slow"]
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    args.push("a" + i)
++    procArgs.push("o" + i)
++  }
++  var code = [
++    "function testInSphere(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
++  ]
++  for(var i=2; i<=NUM_EXPAND; ++i) {
++    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
++  }
++  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return testInSphere")
++  procArgs.push(code.join(""))
+ 
+-    element.addEventListener('mouseleave', clearState)
+-    element.addEventListener('mouseenter', clearState)
+-    element.addEventListener('mouseout', clearState)
+-    element.addEventListener('mouseover', clearState)
++  var proc = Function.apply(undefined, procArgs)
+ 
+-    element.addEventListener('blur', handleBlur)
++  module.exports = proc.apply(undefined, [slowInSphere].concat(CACHED))
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    module.exports[i] = CACHED[i]
++  }
++}
+ 
+-    element.addEventListener('keyup', handleMods)
+-    element.addEventListener('keydown', handleMods)
+-    element.addEventListener('keypress', handleMods)
++generateInSphereTest()
++},{"robust-scale":420,"robust-subtract":422,"robust-sum":423,"two-product":447}],417:[function(require,module,exports){
++"use strict"
+ 
+-    if(element !== window) {
+-      window.addEventListener('blur', handleBlur)
++var determinant = require("robust-determinant")
+ 
+-      window.addEventListener('keyup', handleMods)
+-      window.addEventListener('keydown', handleMods)
+-      window.addEventListener('keypress', handleMods)
++var NUM_EXPAND = 6
++
++function generateSolver(n) {
++  var funcName = "robustLinearSolve" + n + "d"
++  var code = ["function ", funcName, "(A,b){return ["]
++  for(var i=0; i<n; ++i) {
++    code.push("det([")
++    for(var j=0; j<n; ++j) {
++      if(j > 0) {
++        code.push(",")
++      }
++      code.push("[")
++      for(var k=0; k<n; ++k) {
++        if(k > 0) {
++          code.push(",")
++        }
++        if(k === i) {
++          code.push("+b[", j, "]")
++        } else {
++          code.push("+A[", j, "][", k, "]")
++        }
++      }
++      code.push("]")
+     }
++    code.push("]),")
++  }
++  code.push("det(A)]}return ", funcName)
++  var proc = new Function("det", code.join(""))
++  if(n < 6) {
++    return proc(determinant[n])
+   }
++  return proc(determinant)
++}
+ 
+-  function detachListeners() {
+-    if(!attached) {
+-      return
+-    }
+-    attached = false
++function robustLinearSolve0d() {
++  return [ 0 ]
++}
+ 
+-    element.removeEventListener('mousemove', handleMouseMove)
++function robustLinearSolve1d(A, b) {
++  return [ [ b[0] ], [ A[0][0] ] ]
++}
+ 
+-    element.removeEventListener('mousedown', handleMouseDown)
++var CACHE = [
++  robustLinearSolve0d,
++  robustLinearSolve1d
++]
+ 
+-    element.removeEventListener('mouseup', handleMouseUp)
++function generateDispatch() {
++  while(CACHE.length < NUM_EXPAND) {
++    CACHE.push(generateSolver(CACHE.length))
++  }
++  var procArgs = []
++  var code = ["function dispatchLinearSolve(A,b){switch(A.length){"]
++  for(var i=0; i<NUM_EXPAND; ++i) {
++    procArgs.push("s" + i)
++    code.push("case ", i, ":return s", i, "(A,b);")
++  }
++  code.push("}var s=CACHE[A.length];if(!s)s=CACHE[A.length]=g(A.length);return s(A,b)}return dispatchLinearSolve")
++  procArgs.push("CACHE", "g", code.join(""))
++  var proc = Function.apply(undefined, procArgs)
++  module.exports = proc.apply(undefined, CACHE.concat([CACHE, generateSolver]))
++  for(var i=0; i<NUM_EXPAND; ++i) {
++    module.exports[i] = CACHE[i]
++  }
++}
+ 
+-    element.removeEventListener('mouseleave', clearState)
+-    element.removeEventListener('mouseenter', clearState)
+-    element.removeEventListener('mouseout', clearState)
+-    element.removeEventListener('mouseover', clearState)
++generateDispatch()
++},{"robust-determinant":414}],418:[function(require,module,exports){
++"use strict"
+ 
+-    element.removeEventListener('blur', handleBlur)
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
++var robustScale = require("robust-scale")
++var robustSubtract = require("robust-subtract")
+ 
+-    element.removeEventListener('keyup', handleMods)
+-    element.removeEventListener('keydown', handleMods)
+-    element.removeEventListener('keypress', handleMods)
++var NUM_EXPAND = 5
+ 
+-    if(element !== window) {
+-      window.removeEventListener('blur', handleBlur)
++var EPSILON     = 1.1102230246251565e-16
++var ERRBOUND3   = (3.0 + 16.0 * EPSILON) * EPSILON
++var ERRBOUND4   = (7.0 + 56.0 * EPSILON) * EPSILON
+ 
+-      window.removeEventListener('keyup', handleMods)
+-      window.removeEventListener('keydown', handleMods)
+-      window.removeEventListener('keypress', handleMods)
++function cofactor(m, c) {
++  var result = new Array(m.length-1)
++  for(var i=1; i<m.length; ++i) {
++    var r = result[i-1] = new Array(m.length-1)
++    for(var j=0,k=0; j<m.length; ++j) {
++      if(j === c) {
++        continue
++      }
++      r[k++] = m[i][j]
+     }
+   }
++  return result
++}
+ 
+-  //Attach listeners
+-  attachListeners()
+-
+-  var result = {
+-    element: element
+-  }
+-
+-  Object.defineProperties(result, {
+-    enabled: {
+-      get: function() { return attached },
+-      set: function(f) {
+-        if(f) {
+-          attachListeners()
+-        } else {
+-          detachListeners
+-        }
+-      },
+-      enumerable: true
+-    },
+-    buttons: {
+-      get: function() { return buttonState },
+-      enumerable: true
+-    },
+-    x: {
+-      get: function() { return x },
+-      enumerable: true
+-    },
+-    y: {
+-      get: function() { return y },
+-      enumerable: true
+-    },
+-    mods: {
+-      get: function() { return mods },
+-      enumerable: true
++function matrix(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = new Array(n)
++    for(var j=0; j<n; ++j) {
++      result[i][j] = ["m", j, "[", (n-i-1), "]"].join("")
+     }
+-  })
+-
++  }
+   return result
+ }
+ 
+-},{"mouse-event":422}],422:[function(require,module,exports){
+-'use strict'
+-
+-function mouseButtons(ev) {
+-  if(typeof ev === 'object') {
+-    if('buttons' in ev) {
+-      return ev.buttons
+-    } else if('which' in ev) {
+-      var b = ev.which
+-      if(b === 2) {
+-        return 4
+-      } else if(b === 3) {
+-        return 2
+-      } else if(b > 0) {
+-        return 1<<(b-1)
+-      }
+-    } else if('button' in ev) {
+-      var b = ev.button
+-      if(b === 1) {
+-        return 4
+-      } else if(b === 2) {
+-        return 2
+-      } else if(b >= 0) {
+-        return 1<<b
+-      }
+-    }
++function sign(n) {
++  if(n & 1) {
++    return "-"
+   }
+-  return 0
++  return ""
+ }
+-exports.buttons = mouseButtons
+ 
+-function mouseElement(ev) {
+-  return ev.target || ev.srcElement || window
++function generateSum(expr) {
++  if(expr.length === 1) {
++    return expr[0]
++  } else if(expr.length === 2) {
++    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  } else {
++    var m = expr.length>>1
++    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++  }
+ }
+-exports.element = mouseElement
+ 
+-function mouseRelativeX(ev) {
+-  if(typeof ev === 'object') {
+-    if('offsetX' in ev) {
+-      return ev.offsetX
++function determinant(m) {
++  if(m.length === 2) {
++    return [["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")]
++  } else {
++    var expr = []
++    for(var i=0; i<m.length; ++i) {
++      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
+     }
+-    var target = mouseElement(ev)
+-    var bounds = target.getBoundingClientRect()
+-    return ev.clientX - bounds.left
++    return expr
+   }
+-  return 0
+ }
+-exports.x = mouseRelativeX
+ 
+-function mouseRelativeY(ev) {
+-  if(typeof ev === 'object') {
+-    if('offsetY' in ev) {
+-      return ev.offsetY
++function orientation(n) {
++  var pos = []
++  var neg = []
++  var m = matrix(n)
++  var args = []
++  for(var i=0; i<n; ++i) {
++    if((i&1)===0) {
++      pos.push.apply(pos, determinant(cofactor(m, i)))
++    } else {
++      neg.push.apply(neg, determinant(cofactor(m, i)))
+     }
+-    var target = mouseElement(ev)
+-    var bounds = target.getBoundingClientRect()
+-    return ev.clientY - bounds.top
++    args.push("m" + i)
+   }
+-  return 0
++  var posExpr = generateSum(pos)
++  var negExpr = generateSum(neg)
++  var funcName = "orientation" + n + "Exact"
++  var code = ["function ", funcName, "(", args.join(), "){var p=", posExpr, ",n=", negExpr, ",d=sub(p,n);\
++return d[d.length-1];};return ", funcName].join("")
++  var proc = new Function("sum", "prod", "scale", "sub", code)
++  return proc(robustSum, twoProduct, robustScale, robustSubtract)
+ }
+-exports.y = mouseRelativeY
+ 
+-},{}],423:[function(require,module,exports){
+-module.exports = function parseUnit(str, out) {
+-    if (!out)
+-        out = [ 0, '' ]
++var orientation3Exact = orientation(3)
++var orientation4Exact = orientation(4)
+ 
+-    str = String(str)
+-    var num = parseFloat(str, 10)
+-    out[0] = num
+-    out[1] = str.match(/[\d.\-\+]*\s*(.*)/)[1] || ''
+-    return out
++var CACHED = [
++  function orientation0() { return 0 },
++  function orientation1() { return 0 },
++  function orientation2(a, b) { 
++    return b[0] - a[0]
++  },
++  function orientation3(a, b, c) {
++    var l = (a[1] - c[1]) * (b[0] - c[0])
++    var r = (a[0] - c[0]) * (b[1] - c[1])
++    var det = l - r
++    var s
++    if(l > 0) {
++      if(r <= 0) {
++        return det
++      } else {
++        s = l + r
++      }
++    } else if(l < 0) {
++      if(r >= 0) {
++        return det
++      } else {
++        s = -(l + r)
++      }
++    } else {
++      return det
++    }
++    var tol = ERRBOUND3 * s
++    if(det >= tol || det <= -tol) {
++      return det
++    }
++    return orientation3Exact(a, b, c)
++  },
++  function orientation4(a,b,c,d) {
++    var adx = a[0] - d[0]
++    var bdx = b[0] - d[0]
++    var cdx = c[0] - d[0]
++    var ady = a[1] - d[1]
++    var bdy = b[1] - d[1]
++    var cdy = c[1] - d[1]
++    var adz = a[2] - d[2]
++    var bdz = b[2] - d[2]
++    var cdz = c[2] - d[2]
++    var bdxcdy = bdx * cdy
++    var cdxbdy = cdx * bdy
++    var cdxady = cdx * ady
++    var adxcdy = adx * cdy
++    var adxbdy = adx * bdy
++    var bdxady = bdx * ady
++    var det = adz * (bdxcdy - cdxbdy) 
++            + bdz * (cdxady - adxcdy)
++            + cdz * (adxbdy - bdxady)
++    var permanent = (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * Math.abs(adz)
++                  + (Math.abs(cdxady) + Math.abs(adxcdy)) * Math.abs(bdz)
++                  + (Math.abs(adxbdy) + Math.abs(bdxady)) * Math.abs(cdz)
++    var tol = ERRBOUND4 * permanent
++    if ((det > tol) || (-det > tol)) {
++      return det
++    }
++    return orientation4Exact(a,b,c,d)
++  }
++]
++
++function slowOrient(args) {
++  var proc = CACHED[args.length]
++  if(!proc) {
++    proc = CACHED[args.length] = orientation(args.length)
++  }
++  return proc.apply(undefined, args)
+ }
+-},{}],424:[function(require,module,exports){
+-'use strict'
+ 
+-var parseUnit = require('parse-unit')
++function generateOrientationProc() {
++  while(CACHED.length <= NUM_EXPAND) {
++    CACHED.push(orientation(CACHED.length))
++  }
++  var args = []
++  var procArgs = ["slow"]
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    args.push("a" + i)
++    procArgs.push("o" + i)
++  }
++  var code = [
++    "function getOrientation(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
++  ]
++  for(var i=2; i<=NUM_EXPAND; ++i) {
++    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
++  }
++  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return getOrientation")
++  procArgs.push(code.join(""))
+ 
+-module.exports = toPX
++  var proc = Function.apply(undefined, procArgs)
++  module.exports = proc.apply(undefined, [slowOrient].concat(CACHED))
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    module.exports[i] = CACHED[i]
++  }
++}
+ 
+-var PIXELS_PER_INCH = 96
++generateOrientationProc()
++},{"robust-scale":420,"robust-subtract":422,"robust-sum":423,"two-product":447}],419:[function(require,module,exports){
++"use strict"
+ 
+-function getPropertyInPX(element, prop) {
+-  var parts = parseUnit(getComputedStyle(element).getPropertyValue(prop))
+-  return parts[0] * toPX(parts[1], element)
+-}
++var robustSum = require("robust-sum")
++var robustScale = require("robust-scale")
+ 
+-//This brutal hack is needed
+-function getSizeBrutal(unit, element) {
+-  var testDIV = document.createElement('div')
+-  testDIV.style['font-size'] = '128' + unit
+-  element.appendChild(testDIV)
+-  var size = getPropertyInPX(testDIV, 'font-size') / 128
+-  element.removeChild(testDIV)
+-  return size
+-}
++module.exports = robustProduct
+ 
+-function toPX(str, element) {
+-  element = element || document.body
+-  str = (str || 'px').trim().toLowerCase()
+-  if(element === window || element === document) {
+-    element = document.body 
++function robustProduct(a, b) {
++  if(a.length === 1) {
++    return robustScale(b, a[0])
+   }
+-  switch(str) {
+-    case '%':  //Ambiguous, not sure if we should use width or height
+-      return element.clientHeight / 100.0
+-    case 'ch':
+-    case 'ex':
+-      return getSizeBrutal(str, element)
+-    case 'em':
+-      return getPropertyInPX(element, 'font-size')
+-    case 'rem':
+-      return getPropertyInPX(document.body, 'font-size')
+-    case 'vw':
+-      return window.innerWidth/100
+-    case 'vh':
+-      return window.innerHeight/100
+-    case 'vmin':
+-      return Math.min(window.innerWidth, window.innerHeight) / 100
+-    case 'vmax':
+-      return Math.max(window.innerWidth, window.innerHeight) / 100
+-    case 'in':
+-      return PIXELS_PER_INCH
+-    case 'cm':
+-      return PIXELS_PER_INCH / 2.54
+-    case 'mm':
+-      return PIXELS_PER_INCH / 25.4
+-    case 'pt':
+-      return PIXELS_PER_INCH / 72
+-    case 'pc':
+-      return PIXELS_PER_INCH / 6
++  if(b.length === 1) {
++    return robustScale(a, b[0])
+   }
+-  return 1
++  if(a.length === 0 || b.length === 0) {
++    return [0]
++  }
++  var r = [0]
++  if(a.length < b.length) {
++    for(var i=0; i<a.length; ++i) {
++      r = robustSum(r, robustScale(b, a[i]))
++    }
++  } else {
++    for(var i=0; i<b.length; ++i) {
++      r = robustSum(r, robustScale(a, b[i]))
++    }    
++  }
++  return r
+ }
+-},{"parse-unit":423}],425:[function(require,module,exports){
+-'use strict'
++},{"robust-scale":420,"robust-sum":423}],420:[function(require,module,exports){
++"use strict"
+ 
+-var toPX = require('to-px')
++var twoProduct = require("two-product")
++var twoSum = require("two-sum")
+ 
+-module.exports = mouseWheelListen
++module.exports = scaleLinearExpansion
+ 
+-function mouseWheelListen(element, callback, noScroll) {
+-  if(typeof element === 'function') {
+-    noScroll = !!callback
+-    callback = element
+-    element = window
+-  }
+-  var lineHeight = toPX('ex', element)
+-  var listener = function(ev) {
+-    if(noScroll) {
+-      ev.preventDefault()
++function scaleLinearExpansion(e, scale) {
++  var n = e.length
++  if(n === 1) {
++    var ts = twoProduct(e[0], scale)
++    if(ts[0]) {
++      return ts
+     }
+-    var dx = ev.deltaX || 0
+-    var dy = ev.deltaY || 0
+-    var dz = ev.deltaZ || 0
+-    var mode = ev.deltaMode
+-    var scale = 1
+-    switch(mode) {
+-      case 1:
+-        scale = lineHeight
+-      break
+-      case 2:
+-        scale = window.innerHeight
+-      break
++    return [ ts[1] ]
++  }
++  var g = new Array(2 * n)
++  var q = [0.1, 0.1]
++  var t = [0.1, 0.1]
++  var count = 0
++  twoProduct(e[0], scale, q)
++  if(q[0]) {
++    g[count++] = q[0]
++  }
++  for(var i=1; i<n; ++i) {
++    twoProduct(e[i], scale, t)
++    var pq = q[1]
++    twoSum(pq, t[0], q)
++    if(q[0]) {
++      g[count++] = q[0]
+     }
+-    dx *= scale
+-    dy *= scale
+-    dz *= scale
+-    if(dx || dy || dz) {
+-      return callback(dx, dy, dz)
++    var a = t[1]
++    var b = q[1]
++    var x = a + b
++    var bv = x - a
++    var y = b - bv
++    q[1] = x
++    if(y) {
++      g[count++] = y
+     }
+   }
+-  element.addEventListener('wheel', listener)
+-  return listener
++  if(q[1]) {
++    g[count++] = q[1]
++  }
++  if(count === 0) {
++    g[count++] = 0.0
++  }
++  g.length = count
++  return g
+ }
+-
+-},{"to-px":424}],426:[function(require,module,exports){
++},{"two-product":447,"two-sum":448}],421:[function(require,module,exports){
+ "use strict"
+ 
++module.exports = segmentsIntersect
+ 
++var orient = require("robust-orientation")[3]
+ 
+-var fill = require('cwise/lib/wrapper')({"args":["index","array","scalar"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{_inline_4_arg1_=_inline_4_arg2_.apply(void 0,_inline_4_arg0_)}","args":[{"name":"_inline_4_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_4_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_4_arg2_","lvalue":false,"rvalue":true,"count":1}],"thisVars":[],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
+-
+-module.exports = function(array, f) {
+-  fill(array, f)
+-  return array
+-}
+-
+-},{"cwise/lib/wrapper":118}],427:[function(require,module,exports){
+-'use strict'
++function checkCollinear(a0, a1, b0, b1) {
+ 
+-module.exports = invert
++  for(var d=0; d<2; ++d) {
++    var x0 = a0[d]
++    var y0 = a1[d]
++    var l0 = Math.min(x0, y0)
++    var h0 = Math.max(x0, y0)    
+ 
+-var invert2 = require('gl-mat2/invert')
+-var invert3 = require('gl-mat3/invert')
+-var invert4 = require('gl-mat4/invert')
++    var x1 = b0[d]
++    var y1 = b1[d]
++    var l1 = Math.min(x1, y1)
++    var h1 = Math.max(x1, y1)    
+ 
+-function invert(out, M) {
+-  switch(M.length) {
+-    case 0:
+-    break
+-    case 1:
+-      out[0] = 1.0 / M[0]
+-    break
+-    case 4:
+-      invert2(out, M)
+-    break
+-    case 9:
+-      invert3(out, M)
+-    break
+-    case 16:
+-      invert4(out, M)
+-    break
+-    default:
+-      throw new Error('currently supports matrices up to 4x4')
+-    break
++    if(h1 < l0 || h0 < l1) {
++      return false
++    }
+   }
+-  return out
++
++  return true
+ }
+-},{"gl-mat2/invert":428,"gl-mat3/invert":136,"gl-mat4/invert":143}],428:[function(require,module,exports){
+-module.exports = invert
+ 
+-/**
+- * Inverts a mat2
+- *
+- * @alias mat2.invert
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-function invert(out, a) {
+-  var a0 = a[0]
+-  var a1 = a[1]
+-  var a2 = a[2]
+-  var a3 = a[3]
+-  var det = a0 * a3 - a2 * a1
++function segmentsIntersect(a0, a1, b0, b1) {
++  var x0 = orient(a0, b0, b1)
++  var y0 = orient(a1, b0, b1)
++  if((x0 > 0 && y0 > 0) || (x0 < 0 && y0 < 0)) {
++    return false
++  }
+ 
+-  if (!det) return null
+-  det = 1.0 / det
++  var x1 = orient(b0, a0, a1)
++  var y1 = orient(b1, a0, a1)
++  if((x1 > 0 && y1 > 0) || (x1 < 0 && y1 < 0)) {
++    return false
++  }
+ 
+-  out[0] =  a3 * det
+-  out[1] = -a1 * det
+-  out[2] = -a2 * det
+-  out[3] =  a0 * det
++  //Check for degenerate collinear case
++  if(x0 === 0 && y0 === 0 && x1 === 0 && y1 === 0) {
++    return checkCollinear(a0, a1, b0, b1)
++  }
+ 
+-  return out
++  return true
+ }
+-
+-},{}],429:[function(require,module,exports){
++},{"robust-orientation":418}],422:[function(require,module,exports){
+ "use strict"
+ 
+-function interp1d(arr, x) {
+-  var ix = Math.floor(x)
+-    , fx = x - ix
+-    , s0 = 0 <= ix   && ix   < arr.shape[0]
+-    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
+-    , w0 = s0 ? +arr.get(ix)   : 0.0
+-    , w1 = s1 ? +arr.get(ix+1) : 0.0
+-  return (1.0-fx)*w0 + fx*w1
+-}
+-
+-function interp2d(arr, x, y) {
+-  var ix = Math.floor(x)
+-    , fx = x - ix
+-    , s0 = 0 <= ix   && ix   < arr.shape[0]
+-    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
+-    , iy = Math.floor(y)
+-    , fy = y - iy
+-    , t0 = 0 <= iy   && iy   < arr.shape[1]
+-    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
+-    , w00 = s0&&t0 ? arr.get(ix  ,iy  ) : 0.0
+-    , w01 = s0&&t1 ? arr.get(ix  ,iy+1) : 0.0
+-    , w10 = s1&&t0 ? arr.get(ix+1,iy  ) : 0.0
+-    , w11 = s1&&t1 ? arr.get(ix+1,iy+1) : 0.0
+-  return (1.0-fy) * ((1.0-fx)*w00 + fx*w10) + fy * ((1.0-fx)*w01 + fx*w11)
+-}
++module.exports = robustSubtract
+ 
+-function interp3d(arr, x, y, z) {
+-  var ix = Math.floor(x)
+-    , fx = x - ix
+-    , s0 = 0 <= ix   && ix   < arr.shape[0]
+-    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
+-    , iy = Math.floor(y)
+-    , fy = y - iy
+-    , t0 = 0 <= iy   && iy   < arr.shape[1]
+-    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
+-    , iz = Math.floor(z)
+-    , fz = z - iz
+-    , u0 = 0 <= iz   && iz   < arr.shape[2]
+-    , u1 = 0 <= iz+1 && iz+1 < arr.shape[2]
+-    , w000 = s0&&t0&&u0 ? arr.get(ix,iy,iz)       : 0.0
+-    , w010 = s0&&t1&&u0 ? arr.get(ix,iy+1,iz)     : 0.0
+-    , w100 = s1&&t0&&u0 ? arr.get(ix+1,iy,iz)     : 0.0
+-    , w110 = s1&&t1&&u0 ? arr.get(ix+1,iy+1,iz)   : 0.0
+-    , w001 = s0&&t0&&u1 ? arr.get(ix,iy,iz+1)     : 0.0
+-    , w011 = s0&&t1&&u1 ? arr.get(ix,iy+1,iz+1)   : 0.0
+-    , w101 = s1&&t0&&u1 ? arr.get(ix+1,iy,iz+1)   : 0.0
+-    , w111 = s1&&t1&&u1 ? arr.get(ix+1,iy+1,iz+1) : 0.0
+-  return (1.0-fz) * ((1.0-fy) * ((1.0-fx)*w000 + fx*w100) + fy * ((1.0-fx)*w010 + fx*w110)) + fz * ((1.0-fy) * ((1.0-fx)*w001 + fx*w101) + fy * ((1.0-fx)*w011 + fx*w111))
++//Easy case: Add two scalars
++function scalarScalar(a, b) {
++  var x = a + b
++  var bv = x - a
++  var av = x - bv
++  var br = b - bv
++  var ar = a - av
++  var y = ar + br
++  if(y) {
++    return [y, x]
++  }
++  return [x]
+ }
+ 
+-function interpNd(arr) {
+-  var d = arr.shape.length|0
+-    , ix = new Array(d)
+-    , fx = new Array(d)
+-    , s0 = new Array(d)
+-    , s1 = new Array(d)
+-    , i, t
+-  for(i=0; i<d; ++i) {
+-    t = +arguments[i+1]
+-    ix[i] = Math.floor(t)
+-    fx[i] = t - ix[i]
+-    s0[i] = (0 <= ix[i]   && ix[i]   < arr.shape[i])
+-    s1[i] = (0 <= ix[i]+1 && ix[i]+1 < arr.shape[i])
++function robustSubtract(e, f) {
++  var ne = e.length|0
++  var nf = f.length|0
++  if(ne === 1 && nf === 1) {
++    return scalarScalar(e[0], -f[0])
+   }
+-  var r = 0.0, j, w, idx
+-i_loop:
+-  for(i=0; i<(1<<d); ++i) {
+-    w = 1.0
+-    idx = arr.offset
+-    for(j=0; j<d; ++j) {
+-      if(i & (1<<j)) {
+-        if(!s1[j]) {
+-          continue i_loop
+-        }
+-        w *= fx[j]
+-        idx += arr.stride[j] * (ix[j] + 1)
+-      } else {
+-        if(!s0[j]) {
+-          continue i_loop
+-        }
+-        w *= 1.0 - fx[j]
+-        idx += arr.stride[j] * ix[j]
++  var n = ne + nf
++  var g = new Array(n)
++  var count = 0
++  var eptr = 0
++  var fptr = 0
++  var abs = Math.abs
++  var ei = e[eptr]
++  var ea = abs(ei)
++  var fi = -f[fptr]
++  var fa = abs(fi)
++  var a, b
++  if(ea < fa) {
++    b = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    b = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
++      fa = abs(fi)
++    }
++  }
++  if((eptr < ne && ea < fa) || (fptr >= nf)) {
++    a = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    a = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
++      fa = abs(fi)
++    }
++  }
++  var x = a + b
++  var bv = x - a
++  var y = b - bv
++  var q0 = y
++  var q1 = x
++  var _x, _bv, _av, _br, _ar
++  while(eptr < ne && fptr < nf) {
++    if(ea < fa) {
++      a = ei
++      eptr += 1
++      if(eptr < ne) {
++        ei = e[eptr]
++        ea = abs(ei)
++      }
++    } else {
++      a = fi
++      fptr += 1
++      if(fptr < nf) {
++        fi = -f[fptr]
++        fa = abs(fi)
+       }
+     }
+-    r += w * arr.data[idx]
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
+   }
+-  return r
+-}
+-
+-function interpolate(arr, x, y, z) {
+-  switch(arr.shape.length) {
+-    case 0:
+-      return 0.0
+-    case 1:
+-      return interp1d(arr, x)
+-    case 2:
+-      return interp2d(arr, x, y)
+-    case 3:
+-      return interp3d(arr, x, y, z)
+-    default:
+-      return interpNd.apply(undefined, arguments)
++  while(eptr < ne) {
++    a = ei
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++    }
++  }
++  while(fptr < nf) {
++    a = fi
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    } 
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
++    }
++  }
++  if(q0) {
++    g[count++] = q0
++  }
++  if(q1) {
++    g[count++] = q1
+   }
++  if(!count) {
++    g[count++] = 0.0  
++  }
++  g.length = count
++  return g
+ }
+-module.exports = interpolate
+-module.exports.d1 = interp1d
+-module.exports.d2 = interp2d
+-module.exports.d3 = interp3d
+-
+-},{}],430:[function(require,module,exports){
+-'use strict'
+-
+-var interp  = require('ndarray-linear-interpolate')
+-
+-
+-var do_warp = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=new Array(_inline_21_arg4_)}","args":[{"name":"_inline_21_arg0_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_21_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_21_arg2_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_21_arg3_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_21_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_22_arg2_(this_warped,_inline_22_arg0_),_inline_22_arg1_=_inline_22_arg3_.apply(void 0,this_warped)}","args":[{"name":"_inline_22_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_22_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_22_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_22_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_22_arg4_","lvalue":false,"rvalue":false,"count":0}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warpND","blockSize":64})
+-
+-var do_warp_1 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_25_arg2_(this_warped,_inline_25_arg0_),_inline_25_arg1_=_inline_25_arg3_(_inline_25_arg4_,this_warped[0])}","args":[{"name":"_inline_25_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_25_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_25_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_25_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_25_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp1D","blockSize":64})
++},{}],423:[function(require,module,exports){
++"use strict"
+ 
+-var do_warp_2 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_28_arg2_(this_warped,_inline_28_arg0_),_inline_28_arg1_=_inline_28_arg3_(_inline_28_arg4_,this_warped[0],this_warped[1])}","args":[{"name":"_inline_28_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_28_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_28_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_28_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_28_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp2D","blockSize":64})
++module.exports = linearExpansionSum
+ 
+-var do_warp_3 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_31_arg2_(this_warped,_inline_31_arg0_),_inline_31_arg1_=_inline_31_arg3_(_inline_31_arg4_,this_warped[0],this_warped[1],this_warped[2])}","args":[{"name":"_inline_31_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_31_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_31_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_31_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_31_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp3D","blockSize":64})
++//Easy case: Add two scalars
++function scalarScalar(a, b) {
++  var x = a + b
++  var bv = x - a
++  var av = x - bv
++  var br = b - bv
++  var ar = a - av
++  var y = ar + br
++  if(y) {
++    return [y, x]
++  }
++  return [x]
++}
+ 
+-module.exports = function warp(dest, src, func) {
+-  switch(src.shape.length) {
+-    case 1:
+-      do_warp_1(dest, func, interp.d1, src)
+-      break
+-    case 2:
+-      do_warp_2(dest, func, interp.d2, src)
+-      break
+-    case 3:
+-      do_warp_3(dest, func, interp.d3, src)
+-      break
+-    default:
+-      do_warp(dest, func, interp.bind(undefined, src), src.shape.length)
+-      break
++function linearExpansionSum(e, f) {
++  var ne = e.length|0
++  var nf = f.length|0
++  if(ne === 1 && nf === 1) {
++    return scalarScalar(e[0], f[0])
+   }
+-  return dest
++  var n = ne + nf
++  var g = new Array(n)
++  var count = 0
++  var eptr = 0
++  var fptr = 0
++  var abs = Math.abs
++  var ei = e[eptr]
++  var ea = abs(ei)
++  var fi = f[fptr]
++  var fa = abs(fi)
++  var a, b
++  if(ea < fa) {
++    b = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    b = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++      fa = abs(fi)
++    }
++  }
++  if((eptr < ne && ea < fa) || (fptr >= nf)) {
++    a = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    a = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++      fa = abs(fi)
++    }
++  }
++  var x = a + b
++  var bv = x - a
++  var y = b - bv
++  var q0 = y
++  var q1 = x
++  var _x, _bv, _av, _br, _ar
++  while(eptr < ne && fptr < nf) {
++    if(ea < fa) {
++      a = ei
++      eptr += 1
++      if(eptr < ne) {
++        ei = e[eptr]
++        ea = abs(ei)
++      }
++    } else {
++      a = fi
++      fptr += 1
++      if(fptr < nf) {
++        fi = f[fptr]
++        fa = abs(fi)
++      }
++    }
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++  }
++  while(eptr < ne) {
++    a = ei
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++    }
++  }
++  while(fptr < nf) {
++    a = fi
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    } 
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++    }
++  }
++  if(q0) {
++    g[count++] = q0
++  }
++  if(q1) {
++    g[count++] = q1
++  }
++  if(!count) {
++    g[count++] = 0.0  
++  }
++  g.length = count
++  return g
+ }
++},{}],424:[function(require,module,exports){
++(function (global, factory) {
++    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
++    typeof define === 'function' && define.amd ? define(factory) :
++    (global.ShelfPack = factory());
++}(this, function () {
+ 
+-},{"cwise/lib/wrapper":118,"ndarray-linear-interpolate":429}],431:[function(require,module,exports){
+-'use strict'
++/**
++ * Create a new ShelfPack bin allocator.
++ *
++ * Uses the Shelf Best Height Fit algorithm from
++ * http://clb.demon.fi/files/RectangleBinPack.pdf
++ *
++ * @class  ShelfPack
++ * @param  {number}  [w=64]  Initial width of the sprite
++ * @param  {number}  [h=64]  Initial width of the sprite
++ * @param  {Object}  [options]
++ * @param  {boolean} [options.autoResize=false]  If `true`, the sprite will automatically grow
++ * @example
++ * var sprite = new ShelfPack(64, 64, { autoResize: false });
++ */
++function ShelfPack(w, h, options) {
++    options = options || {};
++    this.w = w || 64;
++    this.h = h || 64;
++    this.autoResize = !!options.autoResize;
++    this.shelves = [];
++    this.stats = {};
++    this.count = function(h) {
++        this.stats[h] = (this.stats[h] | 0) + 1;
++    };
++}
+ 
+-var warp = require('ndarray-warp')
+-var invert = require('gl-matrix-invert')
++/**
++ * Batch pack multiple bins into the sprite.
++ *
++ * @param   {Array}   bins Array of requested bins - each object should have `width`, `height` (or `w`, `h`) properties
++ * @param   {Object}  [options]
++ * @param   {boolean} [options.inPlace=false] If `true`, the supplied bin objects will be updated inplace with `x` and `y` properties
++ * @returns {Array}   Array of allocated bins - each bin is an object with `x`, `y`, `w`, `h` properties
++ * @example
++ * var bins = [
++ *     { id: 'a', width: 12, height: 12 },
++ *     { id: 'b', width: 12, height: 16 },
++ *     { id: 'c', width: 12, height: 24 }
++ * ];
++ * var results = sprite.pack(bins, { inPlace: false });
++ */
++ShelfPack.prototype.pack = function(bins, options) {
++    bins = [].concat(bins);
++    options = options || {};
+ 
+-module.exports = applyHomography
++    var results = [],
++        w, h, allocation;
+ 
+-function applyHomography(dest, src, Xi) {
+-  var n = src.dimension
+-  var X = invert([], Xi)
+-  warp(dest, src, function(out_c, inp_c) {
+-    for(var i=0; i<n; ++i) {
+-      out_c[i] = X[(n+1)*n + i]
+-      for(var j=0; j<n; ++j) {
+-        out_c[i] += X[(n+1)*j+i] * inp_c[j]
+-      }
+-    }
+-    var w = X[(n+1)*(n+1)-1]
+-    for(var j=0; j<n; ++j) {
+-      w += X[(n+1)*j+n] * inp_c[j]
+-    }
+-    var wr = 1.0 / w
+-    for(var i=0; i<n; ++i) {
+-      out_c[i] *= wr
++    for (var i = 0; i < bins.length; i++) {
++        w = bins[i].w || bins[i].width;
++        h = bins[i].h || bins[i].height;
++        if (w && h) {
++            allocation = this.packOne(w, h);
++            if (!allocation) {
++                continue;
++            }
++            if (options.inPlace) {
++                bins[i].x = allocation.x;
++                bins[i].y = allocation.y;
++            }
++            results.push(allocation);
++        }
+     }
+-    return out_c
+-  })
+-  return dest
+-}
+-},{"gl-matrix-invert":427,"ndarray-warp":430}],432:[function(require,module,exports){
+-"use strict"
+ 
+-var compile = require("cwise-compiler")
++    // Shrink the width/height of the sprite to the bare minimum.
++    // Since shelf-pack doubles first width, then height when running out of shelf space
++    // this can result in fairly large unused space both in width and height if that happens
++    // towards the end of bin packing.
++    if (this.shelves.length > 0) {
++        var w2 = 0;
++        var h2 = 0;
+ 
+-var EmptyProc = {
+-  body: "",
+-  args: [],
+-  thisVars: [],
+-  localVars: []
+-}
++        for (var j = 0; j < this.shelves.length; j++) {
++            var shelf = this.shelves[j];
++            h2 += shelf.h;
++            w2 = Math.max(shelf.w - shelf.free, w2);
++        }
+ 
+-function fixup(x) {
+-  if(!x) {
+-    return EmptyProc
+-  }
+-  for(var i=0; i<x.args.length; ++i) {
+-    var a = x.args[i]
+-    if(i === 0) {
+-      x.args[i] = {name: a, lvalue:true, rvalue: !!x.rvalue, count:x.count||1 }
+-    } else {
+-      x.args[i] = {name: a, lvalue:false, rvalue:true, count: 1}
++        this.resize(w2, h2);
+     }
+-  }
+-  if(!x.thisVars) {
+-    x.thisVars = []
+-  }
+-  if(!x.localVars) {
+-    x.localVars = []
+-  }
+-  return x
+-}
+ 
+-function pcompile(user_args) {
+-  return compile({
+-    args:     user_args.args,
+-    pre:      fixup(user_args.pre),
+-    body:     fixup(user_args.body),
+-    post:     fixup(user_args.proc),
+-    funcName: user_args.funcName
+-  })
+-}
++    return results;
++};
+ 
+-function makeOp(user_args) {
+-  var args = []
+-  for(var i=0; i<user_args.args.length; ++i) {
+-    args.push("a"+i)
+-  }
+-  var wrapper = new Function("P", [
+-    "return function ", user_args.funcName, "_ndarrayops(", args.join(","), ") {P(", args.join(","), ");return a0}"
+-  ].join(""))
+-  return wrapper(pcompile(user_args))
+-}
++/**
++ * Pack a single bin into the sprite.
++ *
++ * @param   {number}  w   Width of the bin to allocate
++ * @param   {number}  h   Height of the bin to allocate
++ * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
++ * @example
++ * var results = sprite.packOne(12, 16);
++ */
++ShelfPack.prototype.packOne = function(w, h) {
++    var y = 0,
++        best = { shelf: -1, waste: Infinity },
++        shelf, waste;
+ 
+-var assign_ops = {
+-  add:  "+",
+-  sub:  "-",
+-  mul:  "*",
+-  div:  "/",
+-  mod:  "%",
+-  band: "&",
+-  bor:  "|",
+-  bxor: "^",
+-  lshift: "<<",
+-  rshift: ">>",
+-  rrshift: ">>>"
+-}
+-;(function(){
+-  for(var id in assign_ops) {
+-    var op = assign_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array","array","array"],
+-      body: {args:["a","b","c"],
+-             body: "a=b"+op+"c"},
+-      funcName: id
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array","array"],
+-      body: {args:["a","b"],
+-             body:"a"+op+"=b"},
+-      rvalue: true,
+-      funcName: id+"eq"
+-    })
+-    exports[id+"s"] = makeOp({
+-      args: ["array", "array", "scalar"],
+-      body: {args:["a","b","s"],
+-             body:"a=b"+op+"s"},
+-      funcName: id+"s"
+-    })
+-    exports[id+"seq"] = makeOp({
+-      args: ["array","scalar"],
+-      body: {args:["a","s"],
+-             body:"a"+op+"=s"},
+-      rvalue: true,
+-      funcName: id+"seq"
+-    })
+-  }
+-})();
++    // find the best shelf
++    for (var i = 0; i < this.shelves.length; i++) {
++        shelf = this.shelves[i];
++        y += shelf.h;
+ 
+-var unary_ops = {
+-  not: "!",
+-  bnot: "~",
+-  neg: "-",
+-  recip: "1.0/"
+-}
+-;(function(){
+-  for(var id in unary_ops) {
+-    var op = unary_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array", "array"],
+-      body: {args:["a","b"],
+-             body:"a="+op+"b"},
+-      funcName: id
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array"],
+-      body: {args:["a"],
+-             body:"a="+op+"a"},
+-      rvalue: true,
+-      count: 2,
+-      funcName: id+"eq"
+-    })
+-  }
+-})();
++        // exactly the right height with width to spare, pack it..
++        if (h === shelf.h && w <= shelf.free) {
++            this.count(h);
++            return shelf.alloc(w, h);
++        }
++        // not enough height or width, skip it..
++        if (h > shelf.h || w > shelf.free) {
++            continue;
++        }
++        // maybe enough height or width, minimize waste..
++        if (h < shelf.h && w <= shelf.free) {
++            waste = shelf.h - h;
++            if (waste < best.waste) {
++                best.waste = waste;
++                best.shelf = i;
++            }
++        }
++    }
+ 
+-var binary_ops = {
+-  and: "&&",
+-  or: "||",
+-  eq: "===",
+-  neq: "!==",
+-  lt: "<",
+-  gt: ">",
+-  leq: "<=",
+-  geq: ">="
+-}
+-;(function() {
+-  for(var id in binary_ops) {
+-    var op = binary_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array","array","array"],
+-      body: {args:["a", "b", "c"],
+-             body:"a=b"+op+"c"},
+-      funcName: id
+-    })
+-    exports[id+"s"] = makeOp({
+-      args: ["array","array","scalar"],
+-      body: {args:["a", "b", "s"],
+-             body:"a=b"+op+"s"},
+-      funcName: id+"s"
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array", "array"],
+-      body: {args:["a", "b"],
+-             body:"a=a"+op+"b"},
+-      rvalue:true,
+-      count:2,
+-      funcName: id+"eq"
+-    })
+-    exports[id+"seq"] = makeOp({
+-      args: ["array", "scalar"],
+-      body: {args:["a","s"],
+-             body:"a=a"+op+"s"},
+-      rvalue:true,
+-      count:2,
+-      funcName: id+"seq"
+-    })
+-  }
+-})();
++    if (best.shelf !== -1) {
++        shelf = this.shelves[best.shelf];
++        this.count(h);
++        return shelf.alloc(w, h);
++    }
+ 
+-var math_unary = [
+-  "abs",
+-  "acos",
+-  "asin",
+-  "atan",
+-  "ceil",
+-  "cos",
+-  "exp",
+-  "floor",
+-  "log",
+-  "round",
+-  "sin",
+-  "sqrt",
+-  "tan"
+-]
+-;(function() {
+-  for(var i=0; i<math_unary.length; ++i) {
+-    var f = math_unary[i]
+-    exports[f] = makeOp({
+-                    args: ["array", "array"],
+-                    pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                    body: {args:["a","b"], body:"a=this_f(b)", thisVars:["this_f"]},
+-                    funcName: f
+-                  })
+-    exports[f+"eq"] = makeOp({
+-                      args: ["array"],
+-                      pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                      body: {args: ["a"], body:"a=this_f(a)", thisVars:["this_f"]},
+-                      rvalue: true,
+-                      count: 2,
+-                      funcName: f+"eq"
+-                    })
+-  }
+-})();
++    // add shelf..
++    if (h <= (this.h - y) && w <= this.w) {
++        shelf = new Shelf(y, this.w, h);
++        this.shelves.push(shelf);
++        this.count(h);
++        return shelf.alloc(w, h);
++    }
+ 
+-var math_comm = [
+-  "max",
+-  "min",
+-  "atan2",
+-  "pow"
+-]
+-;(function(){
+-  for(var i=0; i<math_comm.length; ++i) {
+-    var f= math_comm[i]
+-    exports[f] = makeOp({
+-                  args:["array", "array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
+-                  funcName: f
+-                })
+-    exports[f+"s"] = makeOp({
+-                  args:["array", "array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
+-                  funcName: f+"s"
+-                  })
+-    exports[f+"eq"] = makeOp({ args:["array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
+-                  rvalue: true,
+-                  count: 2,
+-                  funcName: f+"eq"
+-                  })
+-    exports[f+"seq"] = makeOp({ args:["array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
+-                  rvalue:true,
+-                  count:2,
+-                  funcName: f+"seq"
+-                  })
+-  }
+-})();
++    // no more space..
++    // If `autoResize` option is set, grow the sprite as follows:
++    //  * double whichever sprite dimension is smaller (`w1` or `h1`)
++    //  * if sprite dimensions are equal, grow width before height
++    //  * accomodate very large bin requests (big `w` or `h`)
++    if (this.autoResize) {
++        var h1, h2, w1, w2;
+ 
+-var math_noncomm = [
+-  "atan2",
+-  "pow"
+-]
+-;(function(){
+-  for(var i=0; i<math_noncomm.length; ++i) {
+-    var f= math_noncomm[i]
+-    exports[f+"op"] = makeOp({
+-                  args:["array", "array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
+-                  funcName: f+"op"
+-                })
+-    exports[f+"ops"] = makeOp({
+-                  args:["array", "array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
+-                  funcName: f+"ops"
+-                  })
+-    exports[f+"opeq"] = makeOp({ args:["array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
+-                  rvalue: true,
+-                  count: 2,
+-                  funcName: f+"opeq"
+-                  })
+-    exports[f+"opseq"] = makeOp({ args:["array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
+-                  rvalue:true,
+-                  count:2,
+-                  funcName: f+"opseq"
+-                  })
+-  }
+-})();
++        h1 = h2 = this.h;
++        w1 = w2 = this.w;
+ 
+-exports.any = compile({
+-  args:["array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "if(a){return true}", localVars: [], thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return false"},
+-  funcName: "any"
+-})
++        if (w1 <= h1 || w > w1) {   // grow width..
++            w2 = Math.max(w, w1) * 2;
++        }
++        if (h1 < w1 || h > h1) {    // grow height..
++            h2 = Math.max(h, h1) * 2;
++        }
+ 
+-exports.all = compile({
+-  args:["array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1}], body: "if(!x){return false}", localVars: [], thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return true"},
+-  funcName: "all"
+-})
++        this.resize(w2, h2);
++        return this.packOne(w, h);  // retry
++    }
+ 
+-exports.sum = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s+=a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "sum"
+-})
++    return null;
++};
+ 
+-exports.prod = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=1"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s*=a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "prod"
+-})
++/**
++ * Clear the sprite.
++ *
++ * @example
++ * sprite.clear();
++ */
++ShelfPack.prototype.clear = function() {
++    this.shelves = [];
++    this.stats = {};
++};
+ 
+-exports.norm2squared = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norm2squared"
+-})
+-  
+-exports.norm2 = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return Math.sqrt(this_s)"},
+-  funcName: "norm2"
+-})
+-  
++/**
++ * Resize the sprite.
++ *
++ * @param   {number}  w  Requested new sprite width
++ * @param   {number}  h  Requested new sprite height
++ * @returns {boolean} `true` if resize succeeded, `false` if failed
++ * @example
++ * sprite.resize(256, 256);
++ */
++ShelfPack.prototype.resize = function(w, h) {
++    this.w = w;
++    this.h = h;
++    for (var i = 0; i < this.shelves.length; i++) {
++        this.shelves[i].resize(w);
++    }
++    return true;
++};
+ 
+-exports.norminf = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:4}], body:"if(-a>this_s){this_s=-a}else if(a>this_s){this_s=a}", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norminf"
+-})
+ 
+-exports.norm1 = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:3}], body: "this_s+=a<0?-a:a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norm1"
+-})
+ 
+-exports.sup = compile({
+-  args: [ "array" ],
+-  pre:
+-   { body: "this_h=-Infinity",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  body:
+-   { body: "if(_inline_1_arg0_>this_h)this_h=_inline_1_arg0_",
+-     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  post:
+-   { body: "return this_h",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] }
+- })
++/**
++ * Create a new Shelf.
++ *
++ * @private
++ * @class  Shelf
++ * @param  {number}  y   Top coordinate of the new shelf
++ * @param  {number}  w   Width of the new shelf
++ * @param  {number}  h   Height of the new shelf
++ * @example
++ * var shelf = new Shelf(64, 512, 24);
++ */
++function Shelf(y, w, h) {
++    this.x = 0;
++    this.y = y;
++    this.w = this.free = w;
++    this.h = h;
++}
++
++/**
++ * Allocate a single bin into the shelf.
++ *
++ * @private
++ * @param   {number}  w   Width of the bin to allocate
++ * @param   {number}  h   Height of the bin to allocate
++ * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
++ * @example
++ * shelf.alloc(12, 16);
++ */
++Shelf.prototype.alloc = function(w, h) {
++    if (w > this.free || h > this.h) {
++        return null;
++    }
++    var x = this.x;
++    this.x += w;
++    this.free -= w;
++    return { x: x, y: this.y, w: w, h: h, width: w, height: h };
++};
+ 
+-exports.inf = compile({
+-  args: [ "array" ],
+-  pre:
+-   { body: "this_h=Infinity",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  body:
+-   { body: "if(_inline_1_arg0_<this_h)this_h=_inline_1_arg0_",
+-     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  post:
+-   { body: "return this_h",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] }
+- })
++/**
++ * Resize the shelf.
++ *
++ * @private
++ * @param   {number}  w  Requested new width of the shelf
++ * @returns {boolean} true if resize succeeded, false if failed
++ * @example
++ * shelf.resize(512);
++ */
++Shelf.prototype.resize = function(w) {
++    this.free += (w - this.w);
++    this.w = w;
++    return true;
++};
+ 
+-exports.argmin = compile({
+-  args:["index","array","shape"],
+-  pre:{
+-    body:"{this_v=Infinity;this_i=_inline_0_arg2_.slice(0)}",
+-    args:[
+-      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
+-      ],
+-    thisVars:["this_i","this_v"],
+-    localVars:[]},
+-  body:{
+-    body:"{if(_inline_1_arg1_<this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
+-    args:[
+-      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
+-      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
+-    thisVars:["this_i","this_v"],
+-    localVars:["_inline_1_k"]},
+-  post:{
+-    body:"{return this_i}",
+-    args:[],
+-    thisVars:["this_i"],
+-    localVars:[]}
+-})
++return ShelfPack;
+ 
+-exports.argmax = compile({
+-  args:["index","array","shape"],
+-  pre:{
+-    body:"{this_v=-Infinity;this_i=_inline_0_arg2_.slice(0)}",
+-    args:[
+-      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
+-      ],
+-    thisVars:["this_i","this_v"],
+-    localVars:[]},
+-  body:{
+-    body:"{if(_inline_1_arg1_>this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
+-    args:[
+-      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
+-      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
+-    thisVars:["this_i","this_v"],
+-    localVars:["_inline_1_k"]},
+-  post:{
+-    body:"{return this_i}",
+-    args:[],
+-    thisVars:["this_i"],
+-    localVars:[]}
+-})  
++}));
++},{}],425:[function(require,module,exports){
++"use strict"
+ 
+-exports.random = makeOp({
+-  args: ["array"],
+-  pre: {args:[], body:"this_f=Math.random", thisVars:["this_f"]},
+-  body: {args: ["a"], body:"a=this_f()", thisVars:["this_f"]},
+-  funcName: "random"
+-})
++module.exports = function signum(x) {
++  if(x < 0) { return -1 }
++  if(x > 0) { return 1 }
++  return 0.0
++}
++},{}],426:[function(require,module,exports){
++'use strict'
+ 
+-exports.assign = makeOp({
+-  args:["array", "array"],
+-  body: {args:["a", "b"], body:"a=b"},
+-  funcName: "assign" })
++module.exports = boundary
+ 
+-exports.assigns = makeOp({
+-  args:["array", "scalar"],
+-  body: {args:["a", "b"], body:"a=b"},
+-  funcName: "assigns" })
++var bnd = require('boundary-cells')
++var reduce = require('reduce-simplicial-complex')
+ 
++function boundary(cells) {
++  return reduce(bnd(cells))
++}
+ 
+-exports.equals = compile({
+-  args:["array", "array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1},
+-               {name:"y", lvalue:false, rvalue:true, count:1}], 
+-        body: "if(x!==y){return false}", 
+-        localVars: [], 
+-        thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return true"},
+-  funcName: "equals"
+-})
++},{"boundary-cells":51,"reduce-simplicial-complex":409}],427:[function(require,module,exports){
++'use strict'
+ 
++module.exports = extractContour
+ 
++var ndarray = require('ndarray')
++var pool    = require('typedarray-pool')
++var ndsort  = require('ndarray-sort')
+ 
+-},{"cwise-compiler":115}],433:[function(require,module,exports){
+-var iota = require("iota-array")
+-var isBuffer = require("is-buffer")
++var contourAlgorithm = require('./lib/codegen')
+ 
+-var hasTypedArrays  = ((typeof Float64Array) !== "undefined")
++function getDimension(cells) {
++  var numCells = cells.length
++  var d = 0
++  for(var i=0; i<numCells; ++i) {
++    d = Math.max(d, cells[i].length)|0
++  }
++  return d-1
++}
+ 
+-function compare1st(a, b) {
+-  return a[0] - b[0]
++function getSigns(values, level) {
++  var numVerts    = values.length
++  var vertexSigns = pool.mallocUint8(numVerts)
++  for(var i=0; i<numVerts; ++i) {
++    vertexSigns[i] = (values[i] < level)|0
++  }
++  return vertexSigns
+ }
+ 
+-function order() {
+-  var stride = this.stride
+-  var terms = new Array(stride.length)
+-  var i
+-  for(i=0; i<terms.length; ++i) {
+-    terms[i] = [Math.abs(stride[i]), i]
++function getEdges(cells, d) {
++  var numCells = cells.length
++  var maxEdges = ((d * (d+1)/2) * numCells)|0
++  var edges    = pool.mallocUint32(maxEdges*2)
++  var ePtr     = 0
++  for(var i=0; i<numCells; ++i) {
++    var c = cells[i]
++    var d = c.length
++    for(var j=0; j<d; ++j) {
++      for(var k=0; k<j; ++k) {
++        var a = c[k]
++        var b = c[j]
++        edges[ePtr++] = Math.min(a,b)|0
++        edges[ePtr++] = Math.max(a,b)|0
++      }
++    }
+   }
+-  terms.sort(compare1st)
+-  var result = new Array(terms.length)
+-  for(i=0; i<result.length; ++i) {
+-    result[i] = terms[i][1]
++  var nedges = (ePtr/2)|0
++  ndsort(ndarray(edges, [nedges,2])) 
++  var ptr = 2
++  for(var i=2; i<ePtr; i+=2) {
++    if(edges[i-2] === edges[i] &&
++       edges[i-1] === edges[i+1]) {
++      continue
++    }
++    edges[ptr++] = edges[i]
++    edges[ptr++] = edges[i+1]
++  }
++
++  return ndarray(edges, [(ptr/2)|0, 2])
++}
++
++function getCrossingWeights(edges, values, signs, level) {
++  var edata     = edges.data
++  var numEdges  = edges.shape[0]
++  var weights   = pool.mallocDouble(numEdges)
++  var ptr       = 0
++  for(var i=0; i<numEdges; ++i) {
++    var a  = edata[2*i]
++    var b  = edata[2*i+1]
++    if(signs[a] === signs[b]) {
++      continue
++    }
++    var va = values[a]
++    var vb = values[b]
++    edata[2*ptr]     = a
++    edata[2*ptr+1]   = b
++    weights[ptr++]   = (vb - level) / (vb - va)
++  }
++  edges.shape[0] = ptr
++  return ndarray(weights, [ptr])
++}
++
++function getCascade(edges, numVerts) {
++  var result   = pool.mallocInt32(numVerts*2)
++  var numEdges = edges.shape[0]
++  var edata    = edges.data
++  result[0]    = 0
++  var lastV    = 0
++  for(var i=0; i<numEdges; ++i) {
++    var a = edata[2*i]
++    if(a !== lastV) {
++      result[2*lastV+1] = i
++      while(++lastV < a) {
++        result[2*lastV] = i
++        result[2*lastV+1] = i
++      }
++      result[2*lastV] = i
++    }
++  }
++  result[2*lastV+1] = numEdges
++  while(++lastV < numVerts) {
++    result[2*lastV] = result[2*lastV+1] = numEdges
+   }
+   return result
+ }
+ 
+-function compileConstructor(dtype, dimension) {
+-  var className = ["View", dimension, "d", dtype].join("")
+-  if(dimension < 0) {
+-    className = "View_Nil" + dtype
++function unpackEdges(edges) {
++  var ne = edges.shape[0]|0
++  var edata = edges.data
++  var result = new Array(ne)
++  for(var i=0; i<ne; ++i) {
++    result[i] = [edata[2*i], edata[2*i+1]]
+   }
+-  var useGetters = (dtype === "generic")
++  return result
++}
+ 
+-  if(dimension === -1) {
+-    //Special case for trivial arrays
+-    var code =
+-      "function "+className+"(a){this.data=a;};\
+-var proto="+className+".prototype;\
+-proto.dtype='"+dtype+"';\
+-proto.index=function(){return -1};\
+-proto.size=0;\
+-proto.dimension=-1;\
+-proto.shape=proto.stride=proto.order=[];\
+-proto.lo=proto.hi=proto.transpose=proto.step=\
+-function(){return new "+className+"(this.data);};\
+-proto.get=proto.set=function(){};\
+-proto.pick=function(){return null};\
+-return function construct_"+className+"(a){return new "+className+"(a);}"
+-    var procedure = new Function(code)
+-    return procedure()
+-  } else if(dimension === 0) {
+-    //Special case for 0d arrays
+-    var code =
+-      "function "+className+"(a,d) {\
+-this.data = a;\
+-this.offset = d\
+-};\
+-var proto="+className+".prototype;\
+-proto.dtype='"+dtype+"';\
+-proto.index=function(){return this.offset};\
+-proto.dimension=0;\
+-proto.size=1;\
+-proto.shape=\
+-proto.stride=\
+-proto.order=[];\
+-proto.lo=\
+-proto.hi=\
+-proto.transpose=\
+-proto.step=function "+className+"_copy() {\
+-return new "+className+"(this.data,this.offset)\
+-};\
+-proto.pick=function "+className+"_pick(){\
+-return TrivialArray(this.data);\
+-};\
+-proto.valueOf=proto.get=function "+className+"_get(){\
+-return "+(useGetters ? "this.data.get(this.offset)" : "this.data[this.offset]")+
+-"};\
+-proto.set=function "+className+"_set(v){\
+-return "+(useGetters ? "this.data.set(this.offset,v)" : "this.data[this.offset]=v")+"\
+-};\
+-return function construct_"+className+"(a,b,c,d){return new "+className+"(a,d)}"
+-    var procedure = new Function("TrivialArray", code)
+-    return procedure(CACHED_CONSTRUCTORS[dtype][0])
++function extractContour(cells, values, level, d) {
++  level = level||0.0
++
++  //If user didn't specify `d`, use brute force scan
++  if(typeof d === 'undefined') {
++    d = getDimension(cells)
+   }
+ 
+-  var code = ["'use strict'"]
++  //Count number of cells
++  var numCells = cells.length
++  if(numCells === 0 || d < 1) {
++    return {
++      cells:         [],
++      vertexIds:     [],
++      vertexWeights: []
++    }
++  }
+ 
+-  //Create constructor for view
+-  var indices = iota(dimension)
+-  var args = indices.map(function(i) { return "i"+i })
+-  var index_str = "this.offset+" + indices.map(function(i) {
+-        return "this.stride[" + i + "]*i" + i
+-      }).join("+")
+-  var shapeArg = indices.map(function(i) {
+-      return "b"+i
+-    }).join(",")
+-  var strideArg = indices.map(function(i) {
+-      return "c"+i
+-    }).join(",")
+-  code.push(
+-    "function "+className+"(a," + shapeArg + "," + strideArg + ",d){this.data=a",
+-      "this.shape=[" + shapeArg + "]",
+-      "this.stride=[" + strideArg + "]",
+-      "this.offset=d|0}",
+-    "var proto="+className+".prototype",
+-    "proto.dtype='"+dtype+"'",
+-    "proto.dimension="+dimension)
++  //Read in vertex signs
++  var vertexSigns = getSigns(values, +level)
+ 
+-  //view.size:
+-  code.push("Object.defineProperty(proto,'size',{get:function "+className+"_size(){\
+-return "+indices.map(function(i) { return "this.shape["+i+"]" }).join("*"),
+-"}})")
++  //First get 1-skeleton, find all crossings
++  var edges   = getEdges(cells, d)
++  var weights = getCrossingWeights(edges, values, vertexSigns, +level)
+ 
+-  //view.order:
+-  if(dimension === 1) {
+-    code.push("proto.order=[0]")
+-  } else {
+-    code.push("Object.defineProperty(proto,'order',{get:")
+-    if(dimension < 4) {
+-      code.push("function "+className+"_order(){")
+-      if(dimension === 2) {
+-        code.push("return (Math.abs(this.stride[0])>Math.abs(this.stride[1]))?[1,0]:[0,1]}})")
+-      } else if(dimension === 3) {
+-        code.push(
+-"var s0=Math.abs(this.stride[0]),s1=Math.abs(this.stride[1]),s2=Math.abs(this.stride[2]);\
+-if(s0>s1){\
+-if(s1>s2){\
+-return [2,1,0];\
+-}else if(s0>s2){\
+-return [1,2,0];\
+-}else{\
+-return [1,0,2];\
+-}\
+-}else if(s0>s2){\
+-return [2,0,1];\
+-}else if(s2>s1){\
+-return [0,1,2];\
+-}else{\
+-return [0,2,1];\
+-}}})")
+-      }
+-    } else {
+-      code.push("ORDER})")
++  //Build vertex cascade to speed up binary search
++  var vcascade = getCascade(edges, values.length|0)
++
++  //Then construct cells
++  var faces = contourAlgorithm(d)(cells, edges.data, vcascade, vertexSigns)
++
++  //Unpack data into pretty format
++  var uedges   = unpackEdges(edges)
++  var uweights = [].slice.call(weights.data, 0, weights.shape[0])
++
++  //Release data
++  pool.free(vertexSigns)
++  pool.free(edges.data)
++  pool.free(weights.data)
++  pool.free(vcascade)
++  
++  return {
++    cells:         faces,
++    vertexIds:     uedges,
++    vertexWeights: uweights
++  }
++}
++},{"./lib/codegen":428,"ndarray":385,"ndarray-sort":383,"typedarray-pool":449}],428:[function(require,module,exports){
++'use strict'
++
++module.exports = getPolygonizer
++
++var pool = require('typedarray-pool')
++var createMSTable = require('marching-simplex-table')
++
++var CACHE = {}
++
++function createCellPolygonizer(d) {
++  var maxCellSize = 0
++  var tables = new Array(d+1)
++  tables[0] = [ [] ]
++  for(var i=1; i<=d; ++i) {
++    var tab = tables[i] = createMSTable(i)
++    for(var j=0; j<tab.length; ++j) {
++      maxCellSize = Math.max(maxCellSize, tab[i].length)
+     }
+   }
+ 
+-  //view.set(i0, ..., v):
+-  code.push(
+-"proto.set=function "+className+"_set("+args.join(",")+",v){")
+-  if(useGetters) {
+-    code.push("return this.data.set("+index_str+",v)}")
+-  } else {
+-    code.push("return this.data["+index_str+"]=v}")
++  var code  = [
++  'function B(C,E,i,j){',
++    'var a=Math.min(i,j)|0,b=Math.max(i,j)|0,l=C[2*a],h=C[2*a+1];',
++    'while(l<h){',
++      'var m=(l+h)>>1,v=E[2*m+1];',
++      'if(v===b){return m}',
++      'if(b<v){h=m}else{l=m+1}',
++    '}',
++    'return l;',
++  '};',
++  'function getContour', d, 'd(F,E,C,S){',
++    'var n=F.length,R=[];',
++    'for(var i=0;i<n;++i){var c=F[i],l=c.length;'
++  ]
++
++  function generateCase(facets) {
++    if(facets.length <= 0) {
++      return
++    }
++    code.push('R.push(')
++    for(var i=0; i<facets.length; ++i) {
++      var facet = facets[i]
++      if(i > 0) {
++        code.push(',')
++      }
++      code.push('[')
++      for(var j=0; j<facet.length; ++j) {
++        var f = facet[j]
++        if(j > 0) {
++          code.push(',')
++        }
++        code.push('B(C,E,c[', f[0], '],c[', f[1], '])')
++      }
++      code.push(']')
++    }
++    code.push(');')
+   }
+ 
+-  //view.get(i0, ...):
+-  code.push("proto.get=function "+className+"_get("+args.join(",")+"){")
+-  if(useGetters) {
+-    code.push("return this.data.get("+index_str+")}")
+-  } else {
+-    code.push("return this.data["+index_str+"]}")
++  for(var i=d+1; i>1; --i) {
++    if(i < d+1) {
++      code.push('else ')
++    }
++    code.push('if(l===', i, '){')
++
++    //Generate mask
++    var maskStr = []
++    for(var j=0; j<i; ++j) {
++      maskStr.push('(S[c['+j+']]<<'+j+')')
++    }
++
++    //Perform table look up
++    code.push('var M=', maskStr.join('+'), 
++      ';if(M===0||M===', (1<<i)-1, 
++        '){continue}switch(M){')
++
++    var tab = tables[i-1]
++    for(var j=0; j<tab.length; ++j) {
++      code.push('case ', j, ':')
++      generateCase(tab[j])
++      code.push('break;')
++    }
++    code.push('}}')
+   }
++  code.push('}return R;};return getContour', d, 'd')
+ 
+-  //view.index:
+-  code.push(
+-    "proto.index=function "+className+"_index(", args.join(), "){return "+index_str+"}")
++  var proc = new Function('pool', code.join(''))
++  return proc(pool)
++}
+ 
+-  //view.hi():
+-  code.push("proto.hi=function "+className+"_hi("+args.join(",")+"){return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return ["(typeof i",i,"!=='number'||i",i,"<0)?this.shape[", i, "]:i", i,"|0"].join("")
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "this.stride["+i + "]"
+-    }).join(",")+",this.offset)}")
++function getPolygonizer(d) {
++  var alg = CACHE[d]
++  if(!alg) {
++    alg = CACHE[d] = createCellPolygonizer(d) 
++  }
++  return alg
++}
++},{"marching-simplex-table":364,"typedarray-pool":449}],429:[function(require,module,exports){
++"use strict"; "use restrict";
+ 
+-  //view.lo():
+-  var a_vars = indices.map(function(i) { return "a"+i+"=this.shape["+i+"]" })
+-  var c_vars = indices.map(function(i) { return "c"+i+"=this.stride["+i+"]" })
+-  code.push("proto.lo=function "+className+"_lo("+args.join(",")+"){var b=this.offset,d=0,"+a_vars.join(",")+","+c_vars.join(","))
+-  for(var i=0; i<dimension; ++i) {
+-    code.push(
+-"if(typeof i"+i+"==='number'&&i"+i+">=0){\
+-d=i"+i+"|0;\
+-b+=c"+i+"*d;\
+-a"+i+"-=d}")
++var bits      = require("bit-twiddle")
++  , UnionFind = require("union-find")
++
++//Returns the dimension of a cell complex
++function dimension(cells) {
++  var d = 0
++    , max = Math.max
++  for(var i=0, il=cells.length; i<il; ++i) {
++    d = max(d, cells[i].length)
+   }
+-  code.push("return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return "a"+i
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "c"+i
+-    }).join(",")+",b)}")
++  return d-1
++}
++exports.dimension = dimension
+ 
+-  //view.step():
+-  code.push("proto.step=function "+className+"_step("+args.join(",")+"){var "+
+-    indices.map(function(i) {
+-      return "a"+i+"=this.shape["+i+"]"
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "b"+i+"=this.stride["+i+"]"
+-    }).join(",")+",c=this.offset,d=0,ceil=Math.ceil")
+-  for(var i=0; i<dimension; ++i) {
+-    code.push(
+-"if(typeof i"+i+"==='number'){\
+-d=i"+i+"|0;\
+-if(d<0){\
+-c+=b"+i+"*(a"+i+"-1);\
+-a"+i+"=ceil(-a"+i+"/d)\
+-}else{\
+-a"+i+"=ceil(a"+i+"/d)\
+-}\
+-b"+i+"*=d\
+-}")
++//Counts the number of vertices in faces
++function countVertices(cells) {
++  var vc = -1
++    , max = Math.max
++  for(var i=0, il=cells.length; i<il; ++i) {
++    var c = cells[i]
++    for(var j=0, jl=c.length; j<jl; ++j) {
++      vc = max(vc, c[j])
++    }
+   }
+-  code.push("return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return "a" + i
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "b" + i
+-    }).join(",")+",c)}")
++  return vc+1
++}
++exports.countVertices = countVertices
+ 
+-  //view.transpose():
+-  var tShape = new Array(dimension)
+-  var tStride = new Array(dimension)
+-  for(var i=0; i<dimension; ++i) {
+-    tShape[i] = "a[i"+i+"]"
+-    tStride[i] = "b[i"+i+"]"
++//Returns a deep copy of cells
++function cloneCells(cells) {
++  var ncells = new Array(cells.length)
++  for(var i=0, il=cells.length; i<il; ++i) {
++    ncells[i] = cells[i].slice(0)
+   }
+-  code.push("proto.transpose=function "+className+"_transpose("+args+"){"+
+-    args.map(function(n,idx) { return n + "=(" + n + "===undefined?" + idx + ":" + n + "|0)"}).join(";"),
+-    "var a=this.shape,b=this.stride;return new "+className+"(this.data,"+tShape.join(",")+","+tStride.join(",")+",this.offset)}")
++  return ncells
++}
++exports.cloneCells = cloneCells
+ 
+-  //view.pick():
+-  code.push("proto.pick=function "+className+"_pick("+args+"){var a=[],b=[],c=this.offset")
+-  for(var i=0; i<dimension; ++i) {
+-    code.push("if(typeof i"+i+"==='number'&&i"+i+">=0){c=(c+this.stride["+i+"]*i"+i+")|0}else{a.push(this.shape["+i+"]);b.push(this.stride["+i+"])}")
++//Ranks a pair of cells up to permutation
++function compareCells(a, b) {
++  var n = a.length
++    , t = a.length - b.length
++    , min = Math.min
++  if(t) {
++    return t
+   }
+-  code.push("var ctor=CTOR_LIST[a.length+1];return ctor(this.data,a,b,c)}")
++  switch(n) {
++    case 0:
++      return 0;
++    case 1:
++      return a[0] - b[0];
++    case 2:
++      var d = a[0]+a[1]-b[0]-b[1]
++      if(d) {
++        return d
++      }
++      return min(a[0],a[1]) - min(b[0],b[1])
++    case 3:
++      var l1 = a[0]+a[1]
++        , m1 = b[0]+b[1]
++      d = l1+a[2] - (m1+b[2])
++      if(d) {
++        return d
++      }
++      var l0 = min(a[0], a[1])
++        , m0 = min(b[0], b[1])
++        , d  = min(l0, a[2]) - min(m0, b[2])
++      if(d) {
++        return d
++      }
++      return min(l0+a[2], l1) - min(m0+b[2], m1)
++    
++    //TODO: Maybe optimize n=4 as well?
++    
++    default:
++      var as = a.slice(0)
++      as.sort()
++      var bs = b.slice(0)
++      bs.sort()
++      for(var i=0; i<n; ++i) {
++        t = as[i] - bs[i]
++        if(t) {
++          return t
++        }
++      }
++      return 0
++  }
++}
++exports.compareCells = compareCells
+ 
+-  //Add return statement
+-  code.push("return function construct_"+className+"(data,shape,stride,offset){return new "+className+"(data,"+
+-    indices.map(function(i) {
+-      return "shape["+i+"]"
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "stride["+i+"]"
+-    }).join(",")+",offset)}")
++function compareZipped(a, b) {
++  return compareCells(a[0], b[0])
++}
+ 
+-  //Compile procedure
+-  var procedure = new Function("CTOR_LIST", "ORDER", code.join("\n"))
+-  return procedure(CACHED_CONSTRUCTORS[dtype], order)
++//Puts a cell complex into normal order for the purposes of findCell queries
++function normalize(cells, attr) {
++  if(attr) {
++    var len = cells.length
++    var zipped = new Array(len)
++    for(var i=0; i<len; ++i) {
++      zipped[i] = [cells[i], attr[i]]
++    }
++    zipped.sort(compareZipped)
++    for(var i=0; i<len; ++i) {
++      cells[i] = zipped[i][0]
++      attr[i] = zipped[i][1]
++    }
++    return cells
++  } else {
++    cells.sort(compareCells)
++    return cells
++  }
+ }
++exports.normalize = normalize
+ 
+-function arrayDType(data) {
+-  if(isBuffer(data)) {
+-    return "buffer"
++//Removes all duplicate cells in the complex
++function unique(cells) {
++  if(cells.length === 0) {
++    return []
+   }
+-  if(hasTypedArrays) {
+-    switch(Object.prototype.toString.call(data)) {
+-      case "[object Float64Array]":
+-        return "float64"
+-      case "[object Float32Array]":
+-        return "float32"
+-      case "[object Int8Array]":
+-        return "int8"
+-      case "[object Int16Array]":
+-        return "int16"
+-      case "[object Int32Array]":
+-        return "int32"
+-      case "[object Uint8Array]":
+-        return "uint8"
+-      case "[object Uint16Array]":
+-        return "uint16"
+-      case "[object Uint32Array]":
+-        return "uint32"
+-      case "[object Uint8ClampedArray]":
+-        return "uint8_clamped"
++  var ptr = 1
++    , len = cells.length
++  for(var i=1; i<len; ++i) {
++    var a = cells[i]
++    if(compareCells(a, cells[i-1])) {
++      if(i === ptr) {
++        ptr++
++        continue
++      }
++      cells[ptr++] = a
+     }
+   }
+-  if(Array.isArray(data)) {
+-    return "array"
+-  }
+-  return "generic"
++  cells.length = ptr
++  return cells
+ }
++exports.unique = unique;
+ 
+-var CACHED_CONSTRUCTORS = {
+-  "float32":[],
+-  "float64":[],
+-  "int8":[],
+-  "int16":[],
+-  "int32":[],
+-  "uint8":[],
+-  "uint16":[],
+-  "uint32":[],
+-  "array":[],
+-  "uint8_clamped":[],
+-  "buffer":[],
+-  "generic":[]
++//Finds a cell in a normalized cell complex
++function findCell(cells, c) {
++  var lo = 0
++    , hi = cells.length-1
++    , r  = -1
++  while (lo <= hi) {
++    var mid = (lo + hi) >> 1
++      , s   = compareCells(cells[mid], c)
++    if(s <= 0) {
++      if(s === 0) {
++        r = mid
++      }
++      lo = mid + 1
++    } else if(s > 0) {
++      hi = mid - 1
++    }
++  }
++  return r
+ }
++exports.findCell = findCell;
+ 
+-;(function() {
+-  for(var id in CACHED_CONSTRUCTORS) {
+-    CACHED_CONSTRUCTORS[id].push(compileConstructor(id, -1))
++//Builds an index for an n-cell.  This is more general than dual, but less efficient
++function incidence(from_cells, to_cells) {
++  var index = new Array(from_cells.length)
++  for(var i=0, il=index.length; i<il; ++i) {
++    index[i] = []
+   }
+-});
++  var b = []
++  for(var i=0, n=to_cells.length; i<n; ++i) {
++    var c = to_cells[i]
++    var cl = c.length
++    for(var k=1, kn=(1<<cl); k<kn; ++k) {
++      b.length = bits.popCount(k)
++      var l = 0
++      for(var j=0; j<cl; ++j) {
++        if(k & (1<<j)) {
++          b[l++] = c[j]
++        }
++      }
++      var idx=findCell(from_cells, b)
++      if(idx < 0) {
++        continue
++      }
++      while(true) {
++        index[idx++].push(i)
++        if(idx >= from_cells.length || compareCells(from_cells[idx], b) !== 0) {
++          break
++        }
++      }
++    }
++  }
++  return index
++}
++exports.incidence = incidence
+ 
+-function wrappedNDArrayCtor(data, shape, stride, offset) {
+-  if(data === undefined) {
+-    var ctor = CACHED_CONSTRUCTORS.array[0]
+-    return ctor([])
+-  } else if(typeof data === "number") {
+-    data = [data]
++//Computes the dual of the mesh.  This is basically an optimized version of buildIndex for the situation where from_cells is just the list of vertices
++function dual(cells, vertex_count) {
++  if(!vertex_count) {
++    return incidence(unique(skeleton(cells, 0)), cells, 0)
+   }
+-  if(shape === undefined) {
+-    shape = [ data.length ]
++  var res = new Array(vertex_count)
++  for(var i=0; i<vertex_count; ++i) {
++    res[i] = []
+   }
+-  var d = shape.length
+-  if(stride === undefined) {
+-    stride = new Array(d)
+-    for(var i=d-1, sz=1; i>=0; --i) {
+-      stride[i] = sz
+-      sz *= shape[i]
++  for(var i=0, len=cells.length; i<len; ++i) {
++    var c = cells[i]
++    for(var j=0, cl=c.length; j<cl; ++j) {
++      res[c[j]].push(i)
+     }
+   }
+-  if(offset === undefined) {
+-    offset = 0
+-    for(var i=0; i<d; ++i) {
+-      if(stride[i] < 0) {
+-        offset -= (shape[i]-1)*stride[i]
++  return res
++}
++exports.dual = dual
++
++//Enumerates all cells in the complex
++function explode(cells) {
++  var result = []
++  for(var i=0, il=cells.length; i<il; ++i) {
++    var c = cells[i]
++      , cl = c.length|0
++    for(var j=1, jl=(1<<cl); j<jl; ++j) {
++      var b = []
++      for(var k=0; k<cl; ++k) {
++        if((j >>> k) & 1) {
++          b.push(c[k])
++        }
+       }
++      result.push(b)
+     }
+   }
+-  var dtype = arrayDType(data)
+-  var ctor_list = CACHED_CONSTRUCTORS[dtype]
+-  while(ctor_list.length <= d+1) {
+-    ctor_list.push(compileConstructor(dtype, ctor_list.length-1))
+-  }
+-  var ctor = ctor_list[d+1]
+-  return ctor(data, shape, stride, offset)
++  return normalize(result)
+ }
++exports.explode = explode
+ 
+-module.exports = wrappedNDArrayCtor
+-
+-},{"iota-array":245,"is-buffer":246}],434:[function(require,module,exports){
+-/*!
+- * repeat-string <https://github.com/jonschlinkert/repeat-string>
+- *
+- * Copyright (c) 2014-2015, Jon Schlinkert.
+- * Licensed under the MIT License.
+- */
+-
+-'use strict';
+-
+-/**
+- * Results cache
+- */
+-
+-var res = '';
+-var cache;
+-
+-/**
+- * Expose `repeat`
+- */
+-
+-module.exports = repeat;
+-
+-/**
+- * Repeat the given `string` the specified `number`
+- * of times.
+- *
+- * **Example:**
+- *
+- * ```js
+- * var repeat = require('repeat-string');
+- * repeat('A', 5);
+- * //=> AAAAA
+- * ```
+- *
+- * @param {String} `string` The string to repeat
+- * @param {Number} `number` The number of times to repeat the string
+- * @return {String} Repeated string
+- * @api public
+- */
+-
+-function repeat(str, num) {
+-  if (typeof str !== 'string') {
+-    throw new TypeError('repeat-string expects a string.');
++//Enumerates all of the n-cells of a cell complex
++function skeleton(cells, n) {
++  if(n < 0) {
++    return []
+   }
+-
+-  // cover common, quick use cases
+-  if (num === 1) return str;
+-  if (num === 2) return str + str;
+-
+-  var max = str.length * num;
+-  if (cache !== str || typeof cache === 'undefined') {
+-    cache = str;
+-    res = '';
++  var result = []
++    , k0     = (1<<(n+1))-1
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var k=k0; k<(1<<c.length); k=bits.nextCombination(k)) {
++      var b = new Array(n+1)
++        , l = 0
++      for(var j=0; j<c.length; ++j) {
++        if(k & (1<<j)) {
++          b[l++] = c[j]
++        }
++      }
++      result.push(b)
++    }
+   }
++  return normalize(result)
++}
++exports.skeleton = skeleton;
+ 
+-  while (max > res.length && num > 0) {
+-    if (num & 1) {
+-      res += str;
++//Computes the boundary of all cells, does not remove duplicates
++function boundary(cells) {
++  var res = []
++  for(var i=0,il=cells.length; i<il; ++i) {
++    var c = cells[i]
++    for(var j=0,cl=c.length; j<cl; ++j) {
++      var b = new Array(c.length-1)
++      for(var k=0, l=0; k<cl; ++k) {
++        if(k !== j) {
++          b[l++] = c[k]
++        }
++      }
++      res.push(b)
+     }
+-
+-    num >>= 1;
+-    if (!num) break;
+-    str += str;
+   }
+-
+-  return res.substr(0, max);
++  return normalize(res)
+ }
++exports.boundary = boundary;
+ 
+-
+-},{}],435:[function(require,module,exports){
+-(function (global){
+-module.exports =
+-  global.performance &&
+-  global.performance.now ? function now() {
+-    return performance.now()
+-  } : Date.now || function now() {
+-    return +new Date
++//Computes connected components for a dense cell complex
++function connectedComponents_dense(cells, vertex_count) {
++  var labels = new UnionFind(vertex_count)
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      for(var k=j+1; k<c.length; ++k) {
++        labels.link(c[j], c[k])
++      }
++    }
+   }
++  var components = []
++    , component_labels = labels.ranks
++  for(var i=0; i<component_labels.length; ++i) {
++    component_labels[i] = -1
++  }
++  for(var i=0; i<cells.length; ++i) {
++    var l = labels.find(cells[i][0])
++    if(component_labels[l] < 0) {
++      component_labels[l] = components.length
++      components.push([cells[i].slice(0)])
++    } else {
++      components[component_labels[l]].push(cells[i].slice(0))
++    }
++  }
++  return components
++}
+ 
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{}],436:[function(require,module,exports){
+-"use strict"
+-
+-var determinant = require("robust-determinant")
+-
+-var NUM_EXPAND = 6
+-
+-function generateSolver(n) {
+-  var funcName = "robustLinearSolve" + n + "d"
+-  var code = ["function ", funcName, "(A,b){return ["]
+-  for(var i=0; i<n; ++i) {
+-    code.push("det([")
+-    for(var j=0; j<n; ++j) {
+-      if(j > 0) {
+-        code.push(",")
+-      }
+-      code.push("[")
+-      for(var k=0; k<n; ++k) {
+-        if(k > 0) {
+-          code.push(",")
+-        }
+-        if(k === i) {
+-          code.push("+b[", j, "]")
+-        } else {
+-          code.push("+A[", j, "][", k, "]")
+-        }
++//Computes connected components for a sparse graph
++function connectedComponents_sparse(cells) {
++  var vertices  = unique(normalize(skeleton(cells, 0)))
++    , labels    = new UnionFind(vertices.length)
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      var vj = findCell(vertices, [c[j]])
++      for(var k=j+1; k<c.length; ++k) {
++        labels.link(vj, findCell(vertices, [c[k]]))
+       }
+-      code.push("]")
+     }
+-    code.push("]),")
+   }
+-  code.push("det(A)]}return ", funcName)
+-  var proc = new Function("det", code.join(""))
+-  if(n < 6) {
+-    return proc(determinant[n])
++  var components        = []
++    , component_labels  = labels.ranks
++  for(var i=0; i<component_labels.length; ++i) {
++    component_labels[i] = -1
++  }
++  for(var i=0; i<cells.length; ++i) {
++    var l = labels.find(findCell(vertices, [cells[i][0]]));
++    if(component_labels[l] < 0) {
++      component_labels[l] = components.length
++      components.push([cells[i].slice(0)])
++    } else {
++      components[component_labels[l]].push(cells[i].slice(0))
++    }
++  }
++  return components
++}
++
++//Computes connected components for a cell complex
++function connectedComponents(cells, vertex_count) {
++  if(vertex_count) {
++    return connectedComponents_dense(cells, vertex_count)
+   }
+-  return proc(determinant)
++  return connectedComponents_sparse(cells)
+ }
++exports.connectedComponents = connectedComponents
+ 
+-function robustLinearSolve0d() {
+-  return [ 0 ]
++},{"bit-twiddle":49,"union-find":450}],430:[function(require,module,exports){
++arguments[4][49][0].apply(exports,arguments)
++},{"dup":49}],431:[function(require,module,exports){
++arguments[4][429][0].apply(exports,arguments)
++},{"bit-twiddle":430,"dup":429,"union-find":432}],432:[function(require,module,exports){
++"use strict"; "use restrict";
++
++module.exports = UnionFind;
++
++function UnionFind(count) {
++  this.roots = new Array(count);
++  this.ranks = new Array(count);
++  
++  for(var i=0; i<count; ++i) {
++    this.roots[i] = i;
++    this.ranks[i] = 0;
++  }
+ }
+ 
+-function robustLinearSolve1d(A, b) {
+-  return [ [ b[0] ], [ A[0][0] ] ]
++UnionFind.prototype.length = function() {
++  return this.roots.length;
+ }
+ 
+-var CACHE = [
+-  robustLinearSolve0d,
+-  robustLinearSolve1d
+-]
++UnionFind.prototype.makeSet = function() {
++  var n = this.roots.length;
++  this.roots.push(n);
++  this.ranks.push(0);
++  return n;
++}
+ 
+-function generateDispatch() {
+-  while(CACHE.length < NUM_EXPAND) {
+-    CACHE.push(generateSolver(CACHE.length))
++UnionFind.prototype.find = function(x) {
++  var roots = this.roots;
++  while(roots[x] !== x) {
++    var y = roots[x];
++    roots[x] = roots[y];
++    x = y;
+   }
+-  var procArgs = []
+-  var code = ["function dispatchLinearSolve(A,b){switch(A.length){"]
+-  for(var i=0; i<NUM_EXPAND; ++i) {
+-    procArgs.push("s" + i)
+-    code.push("case ", i, ":return s", i, "(A,b);")
++  return x;
++}
++
++UnionFind.prototype.link = function(x, y) {
++  var xr = this.find(x)
++    , yr = this.find(y);
++  if(xr === yr) {
++    return;
+   }
+-  code.push("}var s=CACHE[A.length];if(!s)s=CACHE[A.length]=g(A.length);return s(A,b)}return dispatchLinearSolve")
+-  procArgs.push("CACHE", "g", code.join(""))
+-  var proc = Function.apply(undefined, procArgs)
+-  module.exports = proc.apply(undefined, CACHE.concat([CACHE, generateSolver]))
+-  for(var i=0; i<NUM_EXPAND; ++i) {
+-    module.exports[i] = CACHE[i]
++  var ranks = this.ranks
++    , roots = this.roots
++    , xd    = ranks[xr]
++    , yd    = ranks[yr];
++  if(xd < yd) {
++    roots[xr] = yr;
++  } else if(yd < xd) {
++    roots[yr] = xr;
++  } else {
++    roots[yr] = xr;
++    ++ranks[xr];
+   }
+ }
+ 
+-generateDispatch()
+-},{"robust-determinant":438}],437:[function(require,module,exports){
++
++},{}],433:[function(require,module,exports){
+ "use strict"
+ 
+-module.exports = compressExpansion
++module.exports = simplifyPolygon
+ 
+-function compressExpansion(e) {
+-  var m = e.length
+-  var Q = e[e.length-1]
+-  var bottom = m
+-  for(var i=m-2; i>=0; --i) {
+-    var a = Q
+-    var b = e[i]
+-    Q = a + b
+-    var bv = Q - a
+-    var q = b - bv
+-    if(q) {
+-      e[--bottom] = Q
+-      Q = q
+-    }
+-  }
+-  var top = 0
+-  for(var i=bottom; i<m; ++i) {
+-    var a = e[i]
+-    var b = Q
+-    Q = a + b
+-    var bv = Q - a
+-    var q = b - bv
+-    if(q) {
+-      e[top++] = q
+-    }
+-  }
+-  e[top++] = Q
+-  e.length = top
+-  return e
++var orient = require("robust-orientation")
++var sc = require("simplicial-complex")
++
++function errorWeight(base, a, b) {
++  var area = Math.abs(orient(base, a, b))
++  var perim = Math.sqrt(Math.pow(a[0] - b[0], 2) + Math.pow(a[1]-b[1], 2))
++  return area / perim
+ }
+-},{}],438:[function(require,module,exports){
+-"use strict"
+ 
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
+-var robustScale = require("robust-scale")
+-var compress = require("robust-compress")
++function simplifyPolygon(cells, positions, minArea) {
+ 
+-var NUM_EXPANDED = 6
++  var n = positions.length
++  var nc = cells.length
++  var inv = new Array(n)
++  var outv = new Array(n)
++  var weights = new Array(n)
++  var dead = new Array(n)
++  
++  //Initialize tables
++  for(var i=0; i<n; ++i) {
++    inv[i] = outv[i] = -1
++    weights[i] = Infinity
++    dead[i] = false
++  }
+ 
+-function cofactor(m, c) {
+-  var result = new Array(m.length-1)
+-  for(var i=1; i<m.length; ++i) {
+-    var r = result[i-1] = new Array(m.length-1)
+-    for(var j=0,k=0; j<m.length; ++j) {
+-      if(j === c) {
+-        continue
+-      }
+-      r[k++] = m[i][j]
++  //Compute neighbors
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    if(c.length !== 2) {
++      throw new Error("Input must be a graph")
++    }
++    var s = c[1]
++    var t = c[0]
++    if(outv[t] !== -1) {
++      outv[t] = -2
++    } else {
++      outv[t] = s
++    }
++    if(inv[s] !== -1) {
++      inv[s] = -2
++    } else {
++      inv[s] = t
+     }
+   }
+-  return result
+-}
+ 
+-function matrix(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = new Array(n)
+-    for(var j=0; j<n; ++j) {
+-      result[i][j] = ["m[", i, "][", j, "]"].join("")
++  //Updates the weight for vertex i
++  function computeWeight(i) {
++    if(dead[i]) {
++      return Infinity
++    }
++    //TODO: Check that the line segment doesn't cross once simplified
++    var s = inv[i]
++    var t = outv[i]
++    if((s<0) || (t<0)) {
++      return Infinity
++    } else {
++      return errorWeight(positions[i], positions[s], positions[t])
+     }
+   }
+-  return result
+-}
+ 
+-function sign(n) {
+-  if(n & 1) {
+-    return "-"
++  //Swaps two nodes on the heap (i,j) are the index of the nodes
++  function heapSwap(i,j) {
++    var a = heap[i]
++    var b = heap[j]
++    heap[i] = b
++    heap[j] = a
++    index[a] = j
++    index[b] = i
+   }
+-  return ""
+-}
+ 
+-function generateSum(expr) {
+-  if(expr.length === 1) {
+-    return expr[0]
+-  } else if(expr.length === 2) {
+-    return ["sum(", expr[0], ",", expr[1], ")"].join("")
+-  } else {
+-    var m = expr.length>>1
+-    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++  //Returns the weight of node i on the heap
++  function heapWeight(i) {
++    return weights[heap[i]]
+   }
+-}
+ 
+-function determinant(m) {
+-  if(m.length === 2) {
+-    return ["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")
+-  } else {
+-    var expr = []
+-    for(var i=0; i<m.length; ++i) {
+-      expr.push(["scale(", determinant(cofactor(m, i)), ",", sign(i), m[0][i], ")"].join(""))
++  function heapParent(i) {
++    if(i & 1) {
++      return (i - 1) >> 1
+     }
+-    return generateSum(expr)
++    return (i >> 1) - 1
+   }
+-}
+-
+-function compileDeterminant(n) {
+-  var proc = new Function("sum", "scale", "prod", "compress", [
+-    "function robustDeterminant",n, "(m){return compress(", 
+-      determinant(matrix(n)),
+-    ")};return robustDeterminant", n].join(""))
+-  return proc(robustSum, robustScale, twoProduct, compress)
+-}
+-
+-var CACHE = [
+-  function robustDeterminant0() { return [0] },
+-  function robustDeterminant1(m) { return [m[0][0]] }
+-]
+ 
+-function generateDispatch() {
+-  while(CACHE.length < NUM_EXPANDED) {
+-    CACHE.push(compileDeterminant(CACHE.length))
+-  }
+-  var procArgs = []
+-  var code = ["function robustDeterminant(m){switch(m.length){"]
+-  for(var i=0; i<NUM_EXPANDED; ++i) {
+-    procArgs.push("det" + i)
+-    code.push("case ", i, ":return det", i, "(m);")
+-  }
+-  code.push("}\
+-var det=CACHE[m.length];\
+-if(!det)\
+-det=CACHE[m.length]=gen(m.length);\
+-return det(m);\
+-}\
+-return robustDeterminant")
+-  procArgs.push("CACHE", "gen", code.join(""))
+-  var proc = Function.apply(undefined, procArgs)
+-  module.exports = proc.apply(undefined, CACHE.concat([CACHE, compileDeterminant]))
+-  for(var i=0; i<CACHE.length; ++i) {
+-    module.exports[i] = CACHE[i]
++  //Bubble element i down the heap
++  function heapDown(i) {
++    var w = heapWeight(i)
++    while(true) {
++      var tw = w
++      var left  = 2*i + 1
++      var right = 2*(i + 1)
++      var next = i
++      if(left < heapCount) {
++        var lw = heapWeight(left)
++        if(lw < tw) {
++          next = left
++          tw = lw
++        }
++      }
++      if(right < heapCount) {
++        var rw = heapWeight(right)
++        if(rw < tw) {
++          next = right
++        }
++      }
++      if(next === i) {
++        return i
++      }
++      heapSwap(i, next)
++      i = next      
++    }
+   }
+-}
+-
+-generateDispatch()
+-},{"robust-compress":437,"robust-scale":440,"robust-sum":442,"two-product":456}],439:[function(require,module,exports){
+-"use strict"
+-
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
+-var robustScale = require("robust-scale")
+-var robustSubtract = require("robust-subtract")
+-
+-var NUM_EXPAND = 5
+-
+-var EPSILON     = 1.1102230246251565e-16
+-var ERRBOUND3   = (3.0 + 16.0 * EPSILON) * EPSILON
+-var ERRBOUND4   = (7.0 + 56.0 * EPSILON) * EPSILON
+ 
+-function cofactor(m, c) {
+-  var result = new Array(m.length-1)
+-  for(var i=1; i<m.length; ++i) {
+-    var r = result[i-1] = new Array(m.length-1)
+-    for(var j=0,k=0; j<m.length; ++j) {
+-      if(j === c) {
+-        continue
++  //Bubbles element i up the heap
++  function heapUp(i) {
++    var w = heapWeight(i)
++    while(i > 0) {
++      var parent = heapParent(i)
++      if(parent >= 0) {
++        var pw = heapWeight(parent)
++        if(w < pw) {
++          heapSwap(i, parent)
++          i = parent
++          continue
++        }
+       }
+-      r[k++] = m[i][j]
++      return i
+     }
+   }
+-  return result
+-}
+ 
+-function matrix(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = new Array(n)
+-    for(var j=0; j<n; ++j) {
+-      result[i][j] = ["m", j, "[", (n-i-1), "]"].join("")
++  //Pop minimum element
++  function heapPop() {
++    if(heapCount > 0) {
++      var head = heap[0]
++      heapSwap(0, heapCount-1)
++      heapCount -= 1
++      heapDown(0)
++      return head
+     }
++    return -1
+   }
+-  return result
+-}
+ 
+-function sign(n) {
+-  if(n & 1) {
+-    return "-"
++  //Update heap item i
++  function heapUpdate(i, w) {
++    var a = heap[i]
++    if(weights[a] === w) {
++      return i
++    }
++    weights[a] = -Infinity
++    heapUp(i)
++    heapPop()
++    weights[a] = w
++    heapCount += 1
++    return heapUp(heapCount-1)
+   }
+-  return ""
+-}
+ 
+-function generateSum(expr) {
+-  if(expr.length === 1) {
+-    return expr[0]
+-  } else if(expr.length === 2) {
+-    return ["sum(", expr[0], ",", expr[1], ")"].join("")
+-  } else {
+-    var m = expr.length>>1
+-    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
+-  }
+-}
++  //Kills a vertex (assume vertex already removed from heap)
++  function kill(i) {
++    if(dead[i]) {
++      return
++    }
++    //Kill vertex
++    dead[i] = true
++    //Fixup topology
++    var s = inv[i]
++    var t = outv[i]
++    if(inv[t] >= 0) {
++      inv[t] = s
++    }
++    if(outv[s] >= 0) {
++      outv[s] = t
++    }
+ 
+-function determinant(m) {
+-  if(m.length === 2) {
+-    return [["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")]
+-  } else {
+-    var expr = []
+-    for(var i=0; i<m.length; ++i) {
+-      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
++    //Update weights on s and t
++    if(index[s] >= 0) {
++      heapUpdate(index[s], computeWeight(s))
++    }
++    if(index[t] >= 0) {
++      heapUpdate(index[t], computeWeight(t))
+     }
+-    return expr
+   }
+-}
+ 
+-function orientation(n) {
+-  var pos = []
+-  var neg = []
+-  var m = matrix(n)
+-  var args = []
++  //Initialize weights and heap
++  var heap = []
++  var index = new Array(n)
+   for(var i=0; i<n; ++i) {
+-    if((i&1)===0) {
+-      pos.push.apply(pos, determinant(cofactor(m, i)))
++    var w = weights[i] = computeWeight(i)
++    if(w < Infinity) {
++      index[i] = heap.length
++      heap.push(i)
+     } else {
+-      neg.push.apply(neg, determinant(cofactor(m, i)))
++      index[i] = -1
+     }
+-    args.push("m" + i)
+   }
+-  var posExpr = generateSum(pos)
+-  var negExpr = generateSum(neg)
+-  var funcName = "orientation" + n + "Exact"
+-  var code = ["function ", funcName, "(", args.join(), "){var p=", posExpr, ",n=", negExpr, ",d=sub(p,n);\
+-return d[d.length-1];};return ", funcName].join("")
+-  var proc = new Function("sum", "prod", "scale", "sub", code)
+-  return proc(robustSum, twoProduct, robustScale, robustSubtract)
+-}
+-
+-var orientation3Exact = orientation(3)
+-var orientation4Exact = orientation(4)
+-
+-var CACHED = [
+-  function orientation0() { return 0 },
+-  function orientation1() { return 0 },
+-  function orientation2(a, b) { 
+-    return b[0] - a[0]
+-  },
+-  function orientation3(a, b, c) {
+-    var l = (a[1] - c[1]) * (b[0] - c[0])
+-    var r = (a[0] - c[0]) * (b[1] - c[1])
+-    var det = l - r
+-    var s
+-    if(l > 0) {
+-      if(r <= 0) {
+-        return det
+-      } else {
+-        s = l + r
+-      }
+-    } else if(l < 0) {
+-      if(r >= 0) {
+-        return det
+-      } else {
+-        s = -(l + r)
+-      }
+-    } else {
+-      return det
++  var heapCount = heap.length
++  for(var i=heapCount>>1; i>=0; --i) {
++    heapDown(i)
++  }
++  
++  //Kill vertices
++  while(true) {
++    var hmin = heapPop()
++    if((hmin < 0) || (weights[hmin] > minArea)) {
++      break
+     }
+-    var tol = ERRBOUND3 * s
+-    if(det >= tol || det <= -tol) {
+-      return det
++    kill(hmin)
++  }
++
++  //Build collapsed vertex table
++  var npositions = []
++  for(var i=0; i<n; ++i) {
++    if(!dead[i]) {
++      index[i] = npositions.length
++      npositions.push(positions[i].slice())
+     }
+-    return orientation3Exact(a, b, c)
+-  },
+-  function orientation4(a,b,c,d) {
+-    var adx = a[0] - d[0]
+-    var bdx = b[0] - d[0]
+-    var cdx = c[0] - d[0]
+-    var ady = a[1] - d[1]
+-    var bdy = b[1] - d[1]
+-    var cdy = c[1] - d[1]
+-    var adz = a[2] - d[2]
+-    var bdz = b[2] - d[2]
+-    var cdz = c[2] - d[2]
+-    var bdxcdy = bdx * cdy
+-    var cdxbdy = cdx * bdy
+-    var cdxady = cdx * ady
+-    var adxcdy = adx * cdy
+-    var adxbdy = adx * bdy
+-    var bdxady = bdx * ady
+-    var det = adz * (bdxcdy - cdxbdy) 
+-            + bdz * (cdxady - adxcdy)
+-            + cdz * (adxbdy - bdxady)
+-    var permanent = (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * Math.abs(adz)
+-                  + (Math.abs(cdxady) + Math.abs(adxcdy)) * Math.abs(bdz)
+-                  + (Math.abs(adxbdy) + Math.abs(bdxady)) * Math.abs(cdz)
+-    var tol = ERRBOUND4 * permanent
+-    if ((det > tol) || (-det > tol)) {
+-      return det
++  }
++  var nv = npositions.length
++
++  function tortoiseHare(seq, start) {
++    if(seq[start] < 0) {
++      return start
+     }
+-    return orientation4Exact(a,b,c,d)
+-  }
+-]
++    var t = start
++    var h = start
++    do {
++      //Walk two steps with h
++      var nh = seq[h]
++      if(!dead[h] || nh < 0 || nh === h) {
++        break
++      }
++      h = nh
++      nh = seq[h]
++      if(!dead[h] || nh < 0 || nh === h) {
++        break
++      }
++      h = nh
+ 
+-function slowOrient(args) {
+-  var proc = CACHED[args.length]
+-  if(!proc) {
+-    proc = CACHED[args.length] = orientation(args.length)
++      //Walk one step with t
++      t = seq[t]
++    } while(t !== h)
++    //Compress cycles
++    for(var v=start; v!==h; v = seq[v]) {
++      seq[v] = h
++    }
++    return h
+   }
+-  return proc.apply(undefined, args)
+-}
+ 
+-function generateOrientationProc() {
+-  while(CACHED.length <= NUM_EXPAND) {
+-    CACHED.push(orientation(CACHED.length))
+-  }
+-  var args = []
+-  var procArgs = ["slow"]
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    args.push("a" + i)
+-    procArgs.push("o" + i)
+-  }
+-  var code = [
+-    "function getOrientation(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
+-  ]
+-  for(var i=2; i<=NUM_EXPAND; ++i) {
+-    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
+-  }
+-  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return getOrientation")
+-  procArgs.push(code.join(""))
++  var ncells = []
++  cells.forEach(function(c) {
++    var tin = tortoiseHare(inv, c[0])
++    var tout = tortoiseHare(outv, c[1])
++    if(tin >= 0 && tout >= 0 && tin !== tout) {
++      var cin = index[tin]
++      var cout = index[tout]
++      if(cin !== cout) {
++        ncells.push([ cin, cout ])
++      }
++    }
++  })
+ 
+-  var proc = Function.apply(undefined, procArgs)
+-  module.exports = proc.apply(undefined, [slowOrient].concat(CACHED))
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    module.exports[i] = CACHED[i]
++  //Normalize result
++  sc.unique(sc.normalize(ncells))
++
++  //Return final list of cells
++  return {
++    positions: npositions,
++    edges: ncells
+   }
+ }
+-
+-generateOrientationProc()
+-},{"robust-scale":440,"robust-subtract":441,"robust-sum":442,"two-product":456}],440:[function(require,module,exports){
++},{"robust-orientation":418,"simplicial-complex":431}],434:[function(require,module,exports){
+ "use strict"
+ 
+-var twoProduct = require("two-product")
+-var twoSum = require("two-sum")
++module.exports = orderSegments
+ 
+-module.exports = scaleLinearExpansion
++var orient = require("robust-orientation")
+ 
+-function scaleLinearExpansion(e, scale) {
+-  var n = e.length
+-  if(n === 1) {
+-    var ts = twoProduct(e[0], scale)
+-    if(ts[0]) {
+-      return ts
+-    }
+-    return [ ts[1] ]
+-  }
+-  var g = new Array(2 * n)
+-  var q = [0.1, 0.1]
+-  var t = [0.1, 0.1]
+-  var count = 0
+-  twoProduct(e[0], scale, q)
+-  if(q[0]) {
+-    g[count++] = q[0]
+-  }
+-  for(var i=1; i<n; ++i) {
+-    twoProduct(e[i], scale, t)
+-    var pq = q[1]
+-    twoSum(pq, t[0], q)
+-    if(q[0]) {
+-      g[count++] = q[0]
++function horizontalOrder(a, b) {
++  var bl, br
++  if(b[0][0] < b[1][0]) {
++    bl = b[0]
++    br = b[1]
++  } else if(b[0][0] > b[1][0]) {
++    bl = b[1]
++    br = b[0]
++  } else {
++    var alo = Math.min(a[0][1], a[1][1])
++    var ahi = Math.max(a[0][1], a[1][1])
++    var blo = Math.min(b[0][1], b[1][1])
++    var bhi = Math.max(b[0][1], b[1][1])
++    if(ahi < blo) {
++      return ahi - blo
+     }
+-    var a = t[1]
+-    var b = q[1]
+-    var x = a + b
+-    var bv = x - a
+-    var y = b - bv
+-    q[1] = x
+-    if(y) {
+-      g[count++] = y
++    if(alo > bhi) {
++      return alo - bhi
+     }
++    return ahi - bhi
+   }
+-  if(q[1]) {
+-    g[count++] = q[1]
++  var al, ar
++  if(a[0][1] < a[1][1]) {
++    al = a[0]
++    ar = a[1]
++  } else {
++    al = a[1]
++    ar = a[0]
+   }
+-  if(count === 0) {
+-    g[count++] = 0.0
++  var d = orient(br, bl, al)
++  if(d) {
++    return d
+   }
+-  g.length = count
+-  return g
+-}
+-},{"two-product":456,"two-sum":457}],441:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = robustSubtract
+-
+-//Easy case: Add two scalars
+-function scalarScalar(a, b) {
+-  var x = a + b
+-  var bv = x - a
+-  var av = x - bv
+-  var br = b - bv
+-  var ar = a - av
+-  var y = ar + br
+-  if(y) {
+-    return [y, x]
++  d = orient(br, bl, ar)
++  if(d) {
++    return d
+   }
+-  return [x]
++  return ar - br
+ }
+ 
+-function robustSubtract(e, f) {
+-  var ne = e.length|0
+-  var nf = f.length|0
+-  if(ne === 1 && nf === 1) {
+-    return scalarScalar(e[0], -f[0])
+-  }
+-  var n = ne + nf
+-  var g = new Array(n)
+-  var count = 0
+-  var eptr = 0
+-  var fptr = 0
+-  var abs = Math.abs
+-  var ei = e[eptr]
+-  var ea = abs(ei)
+-  var fi = -f[fptr]
+-  var fa = abs(fi)
+-  var a, b
+-  if(ea < fa) {
+-    b = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
++function orderSegments(b, a) {
++  var al, ar
++  if(a[0][0] < a[1][0]) {
++    al = a[0]
++    ar = a[1]
++  } else if(a[0][0] > a[1][0]) {
++    al = a[1]
++    ar = a[0]
+   } else {
+-    b = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
+-      fa = abs(fi)
+-    }
++    return horizontalOrder(a, b)
+   }
+-  if((eptr < ne && ea < fa) || (fptr >= nf)) {
+-    a = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
++  var bl, br
++  if(b[0][0] < b[1][0]) {
++    bl = b[0]
++    br = b[1]
++  } else if(b[0][0] > b[1][0]) {
++    bl = b[1]
++    br = b[0]
+   } else {
+-    a = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
+-      fa = abs(fi)
+-    }
++    return -horizontalOrder(b, a)
+   }
+-  var x = a + b
+-  var bv = x - a
+-  var y = b - bv
+-  var q0 = y
+-  var q1 = x
+-  var _x, _bv, _av, _br, _ar
+-  while(eptr < ne && fptr < nf) {
+-    if(ea < fa) {
+-      a = ei
+-      eptr += 1
+-      if(eptr < ne) {
+-        ei = e[eptr]
+-        ea = abs(ei)
+-      }
+-    } else {
+-      a = fi
+-      fptr += 1
+-      if(fptr < nf) {
+-        fi = -f[fptr]
+-        fa = abs(fi)
+-      }
++  var d1 = orient(al, ar, br)
++  var d2 = orient(al, ar, bl)
++  if(d1 < 0) {
++    if(d2 <= 0) {
++      return d1
+     }
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
++  } else if(d1 > 0) {
++    if(d2 >= 0) {
++      return d1
+     }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
++  } else if(d2) {
++    return d2
+   }
+-  while(eptr < ne) {
+-    a = ei
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
++  d1 = orient(br, bl, ar)
++  d2 = orient(br, bl, al)
++  if(d1 < 0) {
++    if(d2 <= 0) {
++      return d1
+     }
+-  }
+-  while(fptr < nf) {
+-    a = fi
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    } 
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
++  } else if(d1 > 0) {
++    if(d2 >= 0) {
++      return d1
+     }
++  } else if(d2) {
++    return d2
+   }
+-  if(q0) {
+-    g[count++] = q0
+-  }
+-  if(q1) {
+-    g[count++] = q1
+-  }
+-  if(!count) {
+-    g[count++] = 0.0  
+-  }
+-  g.length = count
+-  return g
++  return ar[0] - br[0]
+ }
+-},{}],442:[function(require,module,exports){
++},{"robust-orientation":418}],435:[function(require,module,exports){
+ "use strict"
+ 
+-module.exports = linearExpansionSum
++module.exports = createSlabDecomposition
+ 
+-//Easy case: Add two scalars
+-function scalarScalar(a, b) {
+-  var x = a + b
+-  var bv = x - a
+-  var av = x - bv
+-  var br = b - bv
+-  var ar = a - av
+-  var y = ar + br
+-  if(y) {
+-    return [y, x]
+-  }
+-  return [x]
++var bounds = require("binary-search-bounds")
++var createRBTree = require("functional-red-black-tree")
++var orient = require("robust-orientation")
++var orderSegments = require("./lib/order-segments")
++
++function SlabDecomposition(slabs, coordinates, horizontal) {
++  this.slabs = slabs
++  this.coordinates = coordinates
++  this.horizontal = horizontal
+ }
+ 
+-function linearExpansionSum(e, f) {
+-  var ne = e.length|0
+-  var nf = f.length|0
+-  if(ne === 1 && nf === 1) {
+-    return scalarScalar(e[0], f[0])
+-  }
+-  var n = ne + nf
+-  var g = new Array(n)
+-  var count = 0
+-  var eptr = 0
+-  var fptr = 0
+-  var abs = Math.abs
+-  var ei = e[eptr]
+-  var ea = abs(ei)
+-  var fi = f[fptr]
+-  var fa = abs(fi)
+-  var a, b
+-  if(ea < fa) {
+-    b = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
+-  } else {
+-    b = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
+-      fa = abs(fi)
+-    }
+-  }
+-  if((eptr < ne && ea < fa) || (fptr >= nf)) {
+-    a = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
+-  } else {
+-    a = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
+-      fa = abs(fi)
++var proto = SlabDecomposition.prototype
++
++function compareHorizontal(e, y) {
++  return e.y - y
++}
++
++function searchBucket(root, p) {
++  var lastNode = null
++  while(root) {
++    var seg = root.key
++    var l, r
++    if(seg[0][0] < seg[1][0]) {
++      l = seg[0]
++      r = seg[1]
++    } else {
++      l = seg[1]
++      r = seg[0]
+     }
+-  }
+-  var x = a + b
+-  var bv = x - a
+-  var y = b - bv
+-  var q0 = y
+-  var q1 = x
+-  var _x, _bv, _av, _br, _ar
+-  while(eptr < ne && fptr < nf) {
+-    if(ea < fa) {
+-      a = ei
+-      eptr += 1
+-      if(eptr < ne) {
+-        ei = e[eptr]
+-        ea = abs(ei)
++    var o = orient(l, r, p)
++    if(o < 0) {
++      root = root.left
++    } else if(o > 0) {
++      if(p[0] !== seg[1][0]) {
++        lastNode = root
++        root = root.right
++      } else {
++        var val = searchBucket(root.right, p)
++        if(val) {
++          return val
++        }
++        root = root.left
+       }
+     } else {
+-      a = fi
+-      fptr += 1
+-      if(fptr < nf) {
+-        fi = f[fptr]
+-        fa = abs(fi)
+-      }
+-    }
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-  }
+-  while(eptr < ne) {
+-    a = ei
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-    }
+-  }
+-  while(fptr < nf) {
+-    a = fi
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    } 
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
++      if(p[0] !== seg[1][0]) {
++        return root
++      } else {
++        var val = searchBucket(root.right, p)
++        if(val) {
++          return val
++        }
++        root = root.left
++      }
+     }
+   }
+-  if(q0) {
+-    g[count++] = q0
++  return lastNode
++}
++
++proto.castUp = function(p) {
++  var bucket = bounds.le(this.coordinates, p[0])
++  if(bucket < 0) {
++    return -1
+   }
+-  if(q1) {
+-    g[count++] = q1
++  var root = this.slabs[bucket]
++  var hitNode = searchBucket(this.slabs[bucket], p)
++  var lastHit = -1
++  if(hitNode) {
++    lastHit = hitNode.value
+   }
+-  if(!count) {
+-    g[count++] = 0.0  
++  //Edge case: need to handle horizontal segments (sucks)
++  if(this.coordinates[bucket] === p[0]) {
++    var lastSegment = null
++    if(hitNode) {
++      lastSegment = hitNode.key
++    }
++    if(bucket > 0) {
++      var otherHitNode = searchBucket(this.slabs[bucket-1], p)
++      if(otherHitNode) {
++        if(lastSegment) {
++          if(orderSegments(otherHitNode.key, lastSegment) > 0) {
++            lastSegment = otherHitNode.key
++            lastHit = otherHitNode.value
++          }
++        } else {
++          lastHit = otherHitNode.value
++          lastSegment = otherHitNode.key
++        }
++      }
++    }
++    var horiz = this.horizontal[bucket]
++    if(horiz.length > 0) {
++      var hbucket = bounds.ge(horiz, p[1], compareHorizontal)
++      if(hbucket < horiz.length) {
++        var e = horiz[hbucket]
++        if(p[1] === e.y) {
++          if(e.closed) {
++            return e.index
++          } else {
++            while(hbucket < horiz.length-1 && horiz[hbucket+1].y === p[1]) {
++              hbucket = hbucket+1
++              e = horiz[hbucket]
++              if(e.closed) {
++                return e.index
++              }
++            }
++            if(e.y === p[1] && !e.start) {
++              hbucket = hbucket+1
++              if(hbucket >= horiz.length) {
++                return lastHit
++              }
++              e = horiz[hbucket]
++            }
++          }
++        }
++        //Check if e is above/below last segment
++        if(e.start) {
++          if(lastSegment) {
++            var o = orient(lastSegment[0], lastSegment[1], [p[0], e.y])
++            if(lastSegment[0][0] > lastSegment[1][0]) {
++              o = -o
++            }
++            if(o > 0) {
++              lastHit = e.index
++            }
++          } else {
++            lastHit = e.index
++          }
++        } else if(e.y !== p[1]) {
++          lastHit = e.index
++        }
++      }
++    }
+   }
+-  g.length = count
+-  return g
++  return lastHit
+ }
+-},{}],443:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = toSuperScript
++function IntervalSegment(y, index, start, closed) {
++  this.y = y
++  this.index = index
++  this.start = start
++  this.closed = closed
++}
+ 
+-var SUPERSCRIPTS = {
+-  ' ': ' ',
+-  '0': '⁰',
+-  '1': '¹',
+-  '2': '²',
+-  '3': '³',
+-  '4': '⁴',
+-  '5': '⁵',
+-  '6': '⁶',
+-  '7': '⁷',
+-  '8': '⁸',
+-  '9': '⁹',
+-  '+': '⁺',
+-  '-': '⁻',
+-  'a': 'ᵃ',
+-  'b': 'ᵇ',
+-  'c': 'ᶜ',
+-  'd': 'ᵈ',
+-  'e': 'ᵉ',
+-  'f': 'ᶠ',
+-  'g': 'ᵍ',
+-  'h': 'ʰ',
+-  'i': 'ⁱ',
+-  'j': 'ʲ',
+-  'k': 'ᵏ',
+-  'l': 'ˡ',
+-  'm': 'ᵐ',
+-  'n': 'ⁿ',
+-  'o': 'ᵒ',
+-  'p': 'ᵖ',
+-  'r': 'ʳ',
+-  's': 'ˢ',
+-  't': 'ᵗ',
+-  'u': 'ᵘ',
+-  'v': 'ᵛ',
+-  'w': 'ʷ',
+-  'x': 'ˣ',
+-  'y': 'ʸ',
+-  'z': 'ᶻ'
++function Event(x, segment, create, index) {
++  this.x = x
++  this.segment = segment
++  this.create = create
++  this.index = index
+ }
+ 
+-function toSuperScript(x) {
+-  return x.split('').map(function(c) {
+-    if(c in SUPERSCRIPTS) {
+-      return SUPERSCRIPTS[c]
++
++function createSlabDecomposition(segments) {
++  var numSegments = segments.length
++  var numEvents = 2 * numSegments
++  var events = new Array(numEvents)
++  for(var i=0; i<numSegments; ++i) {
++    var s = segments[i]
++    var f = s[0][0] < s[1][0]
++    events[2*i] = new Event(s[0][0], s, f, i)
++    events[2*i+1] = new Event(s[1][0], s, !f, i)
++  }
++  events.sort(function(a,b) {
++    var d = a.x - b.x
++    if(d) {
++      return d
+     }
+-    return ''
+-  }).join('')
++    d = a.create - b.create
++    if(d) {
++      return d
++    }
++    return Math.min(a.segment[0][1], a.segment[1][1]) - Math.min(b.segment[0][1], b.segment[1][1])
++  })
++  var tree = createRBTree(orderSegments)
++  var slabs = []
++  var lines = []
++  var horizontal = []
++  var lastX = -Infinity
++  for(var i=0; i<numEvents; ) {
++    var x = events[i].x
++    var horiz = []
++    while(i < numEvents) {
++      var e = events[i]
++      if(e.x !== x) {
++        break
++      }
++      i += 1
++      if(e.segment[0][0] === e.x && e.segment[1][0] === e.x) {
++        if(e.create) {
++          if(e.segment[0][1] < e.segment[1][1]) {
++            horiz.push(new IntervalSegment(
++                e.segment[0][1],
++                e.index,
++                true,
++                true))
++            horiz.push(new IntervalSegment(
++                e.segment[1][1],
++                e.index,
++                false,
++                false))
++          } else {
++            horiz.push(new IntervalSegment(
++                e.segment[1][1],
++                e.index,
++                true,
++                false))
++            horiz.push(new IntervalSegment(
++                e.segment[0][1],
++                e.index,
++                false,
++                true))
++          }
++        }
++      } else {
++        if(e.create) {
++          tree = tree.insert(e.segment, e.index)
++        } else {
++          tree = tree.remove(e.segment)
++        }
++      }
++    }
++    slabs.push(tree.root)
++    lines.push(x)
++    horizontal.push(horiz)
++  }
++  return new SlabDecomposition(slabs, lines, horizontal)
+ }
+-
+-},{}],444:[function(require,module,exports){
++},{"./lib/order-segments":434,"binary-search-bounds":48,"functional-red-black-tree":101,"robust-orientation":418}],436:[function(require,module,exports){
+ "use strict"
+ 
+-var pool = require("typedarray-pool")
++var robustDot = require("robust-dot-product")
++var robustSum = require("robust-sum")
+ 
+-module.exports = createSurfaceExtractor
++module.exports = splitPolygon
++module.exports.positive = positive
++module.exports.negative = negative
+ 
+-//Helper macros
+-function array(i) {
+-  return "a" + i
+-}
+-function data(i) {
+-  return "d" + i
+-}
+-function cube(i,bitmask) {
+-  return "c" + i + "_" + bitmask
+-}
+-function shape(i) {
+-  return "s" + i
+-}
+-function stride(i,j) {
+-  return "t" + i + "_" + j
+-}
+-function offset(i) {
+-  return "o" + i
+-}
+-function scalar(i) {
+-  return "x" + i
+-}
+-function pointer(i) {
+-  return "p" + i
+-}
+-function delta(i,bitmask) {
+-  return "d" + i + "_" + bitmask
+-}
+-function index(i) {
+-  return "i" + i
+-}
+-function step(i,j) {
+-  return "u" + i + "_" + j
+-}
+-function pcube(bitmask) {
+-  return "b" + bitmask
+-}
+-function qcube(bitmask) {
+-  return "y" + bitmask
+-}
+-function pdelta(bitmask) {
+-  return "e" + bitmask
+-}
+-function vert(i) {
+-  return "v" + i
++function planeT(p, plane) {
++  var r = robustSum(robustDot(p, plane), [plane[plane.length-1]])
++  return r[r.length-1]
+ }
+-var VERTEX_IDS = "V"
+-var PHASES = "P"
+-var VERTEX_COUNT = "N"
+-var POOL_SIZE = "Q"
+-var POINTER = "X"
+-var TEMPORARY = "T"
+ 
+-function permBitmask(dimension, mask, order) {
+-  var r = 0
+-  for(var i=0; i<dimension; ++i) {
+-    if(mask & (1<<i)) {
+-      r |= (1<<order[i])
+-    }
++
++//Can't do this exactly and emit a floating point result
++function lerpW(a, wa, b, wb) {
++  var d = wb - wa
++  var t = -wa / d
++  if(t < 0.0) {
++    t = 0.0
++  } else if(t > 1.0) {
++    t = 1.0
++  }
++  var ti = 1.0 - t
++  var n = a.length
++  var r = new Array(n)
++  for(var i=0; i<n; ++i) {
++    r[i] = t * a[i] + ti * b[i]
+   }
+   return r
+ }
+ 
+-//Generates the surface procedure
+-function compileSurfaceProcedure(vertexFunc, faceFunc, phaseFunc, scalarArgs, order, typesig) {
+-  var arrayArgs = typesig.length
+-  var dimension = order.length
+-
+-  if(dimension < 2) {
+-    throw new Error("ndarray-extract-contour: Dimension must be at least 2")
++function splitPolygon(points, plane) {
++  var pos = []
++  var neg = []
++  var a = planeT(points[points.length-1], plane)
++  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
++    t = points[i]
++    var b = planeT(t, plane)
++    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
++      var p = lerpW(s, b, t, a)
++      pos.push(p)
++      neg.push(p.slice())
++    }
++    if(b < 0) {
++      neg.push(t.slice())
++    } else if(b > 0) {
++      pos.push(t.slice())
++    } else {
++      pos.push(t.slice())
++      neg.push(t.slice())
++    }
++    a = b
+   }
++  return { positive: pos, negative: neg }
++}
+ 
+-  var funcName = "extractContour" + order.join("_")
+-  var code = []
+-  var vars = []
+-  var args = []
+-
+-  //Assemble arguments
+-  for(var i=0; i<arrayArgs; ++i) {
+-    args.push(array(i))  
+-  }
+-  for(var i=0; i<scalarArgs; ++i) {
+-    args.push(scalar(i))
++function positive(points, plane) {
++  var pos = []
++  var a = planeT(points[points.length-1], plane)
++  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
++    t = points[i]
++    var b = planeT(t, plane)
++    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
++      pos.push(lerpW(s, b, t, a))
++    }
++    if(b >= 0) {
++      pos.push(t.slice())
++    }
++    a = b
+   }
++  return pos
++}
+ 
+-  //Shape
+-  for(var i=0; i<dimension; ++i) {
+-    vars.push(shape(i) + "=" + array(0) + ".shape[" + i + "]|0")
+-  }
+-  //Data, stride, offset pointers
+-  for(var i=0; i<arrayArgs; ++i) {
+-    vars.push(data(i) + "=" + array(i) + ".data",
+-              offset(i) + "=" + array(i) + ".offset|0")
+-    for(var j=0; j<dimension; ++j) {
+-      vars.push(stride(i,j) + "=" + array(i) + ".stride[" + j + "]|0")
++function negative(points, plane) {
++  var neg = []
++  var a = planeT(points[points.length-1], plane)
++  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
++    t = points[i]
++    var b = planeT(t, plane)
++    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
++      neg.push(lerpW(s, b, t, a))
+     }
+-  }
+-  //Pointer, delta and cube variables
+-  for(var i=0; i<arrayArgs; ++i) {
+-    vars.push(pointer(i) + "=" + offset(i))
+-    vars.push(cube(i,0))
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      var ptrStr = []
+-      for(var k=0; k<dimension; ++k) {
+-        if(j & (1<<k)) {
+-          ptrStr.push("-" + stride(i,k))
+-        }
+-      }
+-      vars.push(delta(i,j) + "=(" + ptrStr.join("") + ")|0")
+-      vars.push(cube(i,j) + "=0")
++    if(b <= 0) {
++      neg.push(t.slice())
+     }
++    a = b
+   }
+-  //Create step variables
+-  for(var i=0; i<arrayArgs; ++i) {
+-    for(var j=0; j<dimension; ++j) {
+-      var stepVal = [ stride(i,order[j]) ]
+-      if(j > 0) {
+-        stepVal.push(stride(i, order[j-1]) + "*" + shape(order[j-1]) )
+-      }
+-      vars.push(step(i,order[j]) + "=(" + stepVal.join("-") + ")|0")
++  return neg
++}
++},{"robust-dot-product":415,"robust-sum":423}],437:[function(require,module,exports){
++(function(window) {
++    var re = {
++        not_string: /[^s]/,
++        number: /[diefg]/,
++        json: /[j]/,
++        not_json: /[^j]/,
++        text: /^[^\x25]+/,
++        modulo: /^\x25{2}/,
++        placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijosuxX])/,
++        key: /^([a-z_][a-z_\d]*)/i,
++        key_access: /^\.([a-z_][a-z_\d]*)/i,
++        index_access: /^\[(\d+)\]/,
++        sign: /^[\+\-]/
+     }
+-  }
+-  //Create index variables
+-  for(var i=0; i<dimension; ++i) {
+-    vars.push(index(i) + "=0")
+-  }
+-  //Vertex count
+-  vars.push(VERTEX_COUNT + "=0")
+-  //Compute pool size, initialize pool step
+-  var sizeVariable = ["2"]
+-  for(var i=dimension-2; i>=0; --i) {
+-    sizeVariable.push(shape(order[i]))
+-  }
+-  //Previous phases and vertex_ids
+-  vars.push(POOL_SIZE + "=(" + sizeVariable.join("*") + ")|0",
+-            PHASES + "=mallocUint32(" + POOL_SIZE + ")",
+-            VERTEX_IDS + "=mallocUint32(" + POOL_SIZE + ")",
+-            POINTER + "=0")
+-  //Create cube variables for phases
+-  vars.push(pcube(0) + "=0")
+-  for(var j=1; j<(1<<dimension); ++j) {
+-    var cubeDelta = []
+-    var cubeStep = [ ]
+-    for(var k=0; k<dimension; ++k) {
+-      if(j & (1<<k)) {
+-        if(cubeStep.length === 0) {
+-          cubeDelta.push("1")
+-        } else {
+-          cubeDelta.unshift(cubeStep.join("*"))
++
++    function sprintf() {
++        var key = arguments[0], cache = sprintf.cache
++        if (!(cache[key] && cache.hasOwnProperty(key))) {
++            cache[key] = sprintf.parse(key)
++        }
++        return sprintf.format.call(null, cache[key], arguments)
++    }
++
++    sprintf.format = function(parse_tree, argv) {
++        var cursor = 1, tree_length = parse_tree.length, node_type = "", arg, output = [], i, k, match, pad, pad_character, pad_length, is_positive = true, sign = ""
++        for (i = 0; i < tree_length; i++) {
++            node_type = get_type(parse_tree[i])
++            if (node_type === "string") {
++                output[output.length] = parse_tree[i]
++            }
++            else if (node_type === "array") {
++                match = parse_tree[i] // convenience purposes only
++                if (match[2]) { // keyword argument
++                    arg = argv[cursor]
++                    for (k = 0; k < match[2].length; k++) {
++                        if (!arg.hasOwnProperty(match[2][k])) {
++                            throw new Error(sprintf("[sprintf] property '%s' does not exist", match[2][k]))
++                        }
++                        arg = arg[match[2][k]]
++                    }
++                }
++                else if (match[1]) { // positional argument (explicit)
++                    arg = argv[match[1]]
++                }
++                else { // positional argument (implicit)
++                    arg = argv[cursor++]
++                }
++
++                if (get_type(arg) == "function") {
++                    arg = arg()
++                }
++
++                if (re.not_string.test(match[8]) && re.not_json.test(match[8]) && (get_type(arg) != "number" && isNaN(arg))) {
++                    throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg)))
++                }
++
++                if (re.number.test(match[8])) {
++                    is_positive = arg >= 0
++                }
++
++                switch (match[8]) {
++                    case "b":
++                        arg = arg.toString(2)
++                    break
++                    case "c":
++                        arg = String.fromCharCode(arg)
++                    break
++                    case "d":
++                    case "i":
++                        arg = parseInt(arg, 10)
++                    break
++                    case "j":
++                        arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
++                    break
++                    case "e":
++                        arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential()
++                    break
++                    case "f":
++                        arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
++                    break
++                    case "g":
++                        arg = match[7] ? parseFloat(arg).toPrecision(match[7]) : parseFloat(arg)
++                    break
++                    case "o":
++                        arg = arg.toString(8)
++                    break
++                    case "s":
++                        arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg)
++                    break
++                    case "u":
++                        arg = arg >>> 0
++                    break
++                    case "x":
++                        arg = arg.toString(16)
++                    break
++                    case "X":
++                        arg = arg.toString(16).toUpperCase()
++                    break
++                }
++                if (re.json.test(match[8])) {
++                    output[output.length] = arg
++                }
++                else {
++                    if (re.number.test(match[8]) && (!is_positive || match[3])) {
++                        sign = is_positive ? "+" : "-"
++                        arg = arg.toString().replace(re.sign, "")
++                    }
++                    else {
++                        sign = ""
++                    }
++                    pad_character = match[4] ? match[4] === "0" ? "0" : match[4].charAt(1) : " "
++                    pad_length = match[6] - (sign + arg).length
++                    pad = match[6] ? (pad_length > 0 ? str_repeat(pad_character, pad_length) : "") : ""
++                    output[output.length] = match[5] ? sign + arg + pad : (pad_character === "0" ? sign + pad + arg : pad + sign + arg)
++                }
++            }
+         }
+-      }
+-      cubeStep.push(shape(order[k]))
+-    }
+-    var signFlag = ""
+-    if(cubeDelta[0].indexOf(shape(order[dimension-2])) < 0) {
+-      signFlag = "-"
++        return output.join("")
+     }
+-    var jperm = permBitmask(dimension, j, order)
+-    vars.push(pdelta(jperm) + "=(-" + cubeDelta.join("-") + ")|0",
+-              qcube(jperm) + "=(" + signFlag + cubeDelta.join("-") + ")|0",
+-              pcube(jperm) + "=0")
+-  }
+-  vars.push(vert(0) + "=0", TEMPORARY + "=0")
+ 
+-  function forLoopBegin(i, start) {
+-    code.push("for(", index(order[i]), "=", start, ";",
+-      index(order[i]), "<", shape(order[i]), ";",
+-      "++", index(order[i]), "){")
+-  }
++    sprintf.cache = {}
+ 
+-  function forLoopEnd(i) {
+-    for(var j=0; j<arrayArgs; ++j) {
+-      code.push(pointer(j), "+=", step(j,order[i]), ";")
++    sprintf.parse = function(fmt) {
++        var _fmt = fmt, match = [], parse_tree = [], arg_names = 0
++        while (_fmt) {
++            if ((match = re.text.exec(_fmt)) !== null) {
++                parse_tree[parse_tree.length] = match[0]
++            }
++            else if ((match = re.modulo.exec(_fmt)) !== null) {
++                parse_tree[parse_tree.length] = "%"
++            }
++            else if ((match = re.placeholder.exec(_fmt)) !== null) {
++                if (match[2]) {
++                    arg_names |= 1
++                    var field_list = [], replacement_field = match[2], field_match = []
++                    if ((field_match = re.key.exec(replacement_field)) !== null) {
++                        field_list[field_list.length] = field_match[1]
++                        while ((replacement_field = replacement_field.substring(field_match[0].length)) !== "") {
++                            if ((field_match = re.key_access.exec(replacement_field)) !== null) {
++                                field_list[field_list.length] = field_match[1]
++                            }
++                            else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
++                                field_list[field_list.length] = field_match[1]
++                            }
++                            else {
++                                throw new SyntaxError("[sprintf] failed to parse named argument key")
++                            }
++                        }
++                    }
++                    else {
++                        throw new SyntaxError("[sprintf] failed to parse named argument key")
++                    }
++                    match[2] = field_list
++                }
++                else {
++                    arg_names |= 2
++                }
++                if (arg_names === 3) {
++                    throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
++                }
++                parse_tree[parse_tree.length] = match
++            }
++            else {
++                throw new SyntaxError("[sprintf] unexpected placeholder")
++            }
++            _fmt = _fmt.substring(match[0].length)
++        }
++        return parse_tree
+     }
+-    code.push("}")
+-  }
+ 
+-  function fillEmptySlice(k) {
+-    for(var i=k-1; i>=0; --i) {
+-      forLoopBegin(i, 0) 
+-    }
+-    var phaseFuncArgs = []
+-    for(var i=0; i<arrayArgs; ++i) {
+-      if(typesig[i]) {
+-        phaseFuncArgs.push(data(i) + ".get(" + pointer(i) + ")")
+-      } else {
+-        phaseFuncArgs.push(data(i) + "[" + pointer(i) + "]")
+-      }
+-    }
+-    for(var i=0; i<scalarArgs; ++i) {
+-      phaseFuncArgs.push(scalar(i))
+-    }
+-    code.push(PHASES, "[", POINTER, "++]=phase(", phaseFuncArgs.join(), ");")
+-    for(var i=0; i<k; ++i) {
+-      forLoopEnd(i)
+-    }
+-    for(var j=0; j<arrayArgs; ++j) {
+-      code.push(pointer(j), "+=", step(j,order[k]), ";")
++    var vsprintf = function(fmt, argv, _argv) {
++        _argv = (argv || []).slice(0)
++        _argv.splice(0, 0, fmt)
++        return sprintf.apply(null, _argv)
+     }
+-  }
+ 
+-  function processGridCell(mask) {
+-    //Read in local data
+-    for(var i=0; i<arrayArgs; ++i) {
+-      if(typesig[i]) {
+-        code.push(cube(i,0), "=", data(i), ".get(", pointer(i), ");")
+-      } else {
+-        code.push(cube(i,0), "=", data(i), "[", pointer(i), "];")
+-      }
++    /**
++     * helpers
++     */
++    function get_type(variable) {
++        return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase()
+     }
+ 
+-    //Read in phase
+-    var phaseFuncArgs = []
+-    for(var i=0; i<arrayArgs; ++i) {
+-      phaseFuncArgs.push(cube(i,0))
+-    }
+-    for(var i=0; i<scalarArgs; ++i) {
+-      phaseFuncArgs.push(scalar(i))
+-    }
+-    
+-    code.push(pcube(0), "=", PHASES, "[", POINTER, "]=phase(", phaseFuncArgs.join(), ");")
+-    
+-    //Read in other cube data
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      code.push(pcube(j), "=", PHASES, "[", POINTER, "+", pdelta(j), "];")
++    function str_repeat(input, multiplier) {
++        return Array(multiplier + 1).join(input)
+     }
+ 
+-    //Check for boundary crossing
+-    var vertexPredicate = []
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      vertexPredicate.push("(" + pcube(0) + "!==" + pcube(j) + ")")
++    /**
++     * export to either browser or node.js
++     */
++    if (typeof exports !== "undefined") {
++        exports.sprintf = sprintf
++        exports.vsprintf = vsprintf
+     }
+-    code.push("if(", vertexPredicate.join("||"), "){")
++    else {
++        window.sprintf = sprintf
++        window.vsprintf = vsprintf
+ 
+-    //Read in boundary data
+-    var vertexArgs = []
+-    for(var i=0; i<dimension; ++i) {
+-      vertexArgs.push(index(i))
+-    }
+-    for(var i=0; i<arrayArgs; ++i) {
+-      vertexArgs.push(cube(i,0))
+-      for(var j=1; j<(1<<dimension); ++j) {
+-        if(typesig[i]) {
+-          code.push(cube(i,j), "=", data(i), ".get(", pointer(i), "+", delta(i,j), ");")
+-        } else {
+-          code.push(cube(i,j), "=", data(i), "[", pointer(i), "+", delta(i,j), "];")
++        if (typeof define === "function" && define.amd) {
++            define(function() {
++                return {
++                    sprintf: sprintf,
++                    vsprintf: vsprintf
++                }
++            })
+         }
+-        vertexArgs.push(cube(i,j))
+-      }
+-    }
+-    for(var i=0; i<(1<<dimension); ++i) {
+-      vertexArgs.push(pcube(i))
+-    }
+-    for(var i=0; i<scalarArgs; ++i) {
+-      vertexArgs.push(scalar(i))
+     }
++})(typeof window === "undefined" ? this : window);
+ 
+-    //Generate vertex
+-    code.push("vertex(", vertexArgs.join(), ");",
+-      vert(0), "=", VERTEX_IDS, "[", POINTER, "]=", VERTEX_COUNT, "++;")
++},{}],438:[function(require,module,exports){
++'use strict';
+ 
+-    //Check for face crossings
+-    var base = (1<<dimension)-1
+-    var corner = pcube(base)
+-    for(var j=0; j<dimension; ++j) {
+-      if((mask & ~(1<<j))===0) {
+-        //Check face
+-        var subset = base^(1<<j)
+-        var edge = pcube(subset)
+-        var faceArgs = [ ]
+-        for(var k=subset; k>0; k=(k-1)&subset) {
+-          faceArgs.push(VERTEX_IDS + "[" + POINTER + "+" + pdelta(k) + "]")
+-        }
+-        faceArgs.push(vert(0))
+-        for(var k=0; k<arrayArgs; ++k) {
+-          if(j&1) {
+-            faceArgs.push(cube(k,base), cube(k,subset))
+-          } else {
+-            faceArgs.push(cube(k,subset), cube(k,base))
+-          }
+-        }
+-        if(j&1) {
+-          faceArgs.push(corner, edge)
+-        } else {
+-          faceArgs.push(edge, corner)
+-        }
+-        for(var k=0; k<scalarArgs; ++k) {
+-          faceArgs.push(scalar(k))
++var kdbush = require('kdbush');
++
++module.exports = supercluster;
++
++function supercluster(options) {
++    return new SuperCluster(options);
++}
++
++function SuperCluster(options) {
++    this.options = extend(Object.create(this.options), options);
++    this.trees = new Array(this.options.maxZoom + 1);
++}
++
++SuperCluster.prototype = {
++    options: {
++        minZoom: 0,   // min zoom to generate clusters on
++        maxZoom: 16,  // max zoom level to cluster the points on
++        radius: 40,   // cluster radius in pixels
++        extent: 512,  // tile extent (radius is calculated relative to it)
++        nodeSize: 64, // size of the KD-tree leaf node, affects performance
++        log: false    // whether to log timing info
++    },
++
++    load: function (points) {
++        var log = this.options.log;
++
++        if (log) console.time('total time');
++
++        var timerId = 'prepare ' + points.length + ' points';
++        if (log) console.time(timerId);
++
++        this.points = points;
++
++        // generate a cluster object for each point
++        var clusters = points.map(createPointCluster);
++        if (log) console.timeEnd(timerId);
++
++        // cluster points on max zoom, then cluster the results on previous zoom, etc.;
++        // results in a cluster hierarchy across zoom levels
++        for (var z = this.options.maxZoom; z >= this.options.minZoom; z--) {
++            var now = +Date.now();
++
++            // index input points into a KD-tree
++            this.trees[z + 1] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
++
++            clusters = this._cluster(clusters, z); // create a new set of clusters for the zoom
++
++            if (log) console.log('z%d: %d clusters in %dms', z, clusters.length, +Date.now() - now);
+         }
+-        code.push("if(", corner, "!==", edge, "){",
+-          "face(", faceArgs.join(), ")}")
+-      }
+-    }
+-    
+-    //Increment pointer, close off if statement
+-    code.push("}",
+-      POINTER, "+=1;")
+-  }
+ 
+-  function flip() {
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      code.push(TEMPORARY, "=", pdelta(j), ";",
+-                pdelta(j), "=", qcube(j), ";",
+-                qcube(j), "=", TEMPORARY, ";")
+-    }
+-  }
++        // index top-level clusters
++        this.trees[this.options.minZoom] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
+ 
+-  function createLoop(i, mask) {
+-    if(i < 0) {
+-      processGridCell(mask)
+-      return
+-    }
+-    fillEmptySlice(i)
+-    code.push("if(", shape(order[i]), ">0){",
+-      index(order[i]), "=1;")
+-    createLoop(i-1, mask|(1<<order[i]))
++        if (log) console.timeEnd('total time');
+ 
+-    for(var j=0; j<arrayArgs; ++j) {
+-      code.push(pointer(j), "+=", step(j,order[i]), ";")
+-    }
+-    if(i === dimension-1) {
+-      code.push(POINTER, "=0;")
+-      flip()
+-    }
+-    forLoopBegin(i, 2)
+-    createLoop(i-1, mask)
+-    if(i === dimension-1) {
+-      code.push("if(", index(order[dimension-1]), "&1){",
+-        POINTER, "=0;}")
+-      flip()
+-    }
+-    forLoopEnd(i)
+-    code.push("}")
+-  }
++        return this;
++    },
+ 
+-  createLoop(dimension-1, 0)
++    getClusters: function (bbox, zoom) {
++        var tree = this.trees[this._limitZoom(zoom)];
++        var ids = tree.range(lngX(bbox[0]), latY(bbox[3]), lngX(bbox[2]), latY(bbox[1]));
++        var clusters = [];
++        for (var i = 0; i < ids.length; i++) {
++            var c = tree.points[ids[i]];
++            clusters.push(c.id !== -1 ? this.points[c.id] : getClusterJSON(c));
++        }
++        return clusters;
++    },
+ 
+-  //Release scratch memory
+-  code.push("freeUint32(", VERTEX_IDS, ");freeUint32(", PHASES, ");")
++    getTile: function (z, x, y) {
++        var z2 = Math.pow(2, z);
++        var extent = this.options.extent;
++        var p = this.options.radius / extent;
++        var tree = this.trees[this._limitZoom(z)];
++        var ids = tree.range(
++            (x - p) / z2,
++            (y - p) / z2,
++            (x + 1 + p) / z2,
++            (y + 1 + p) / z2);
+ 
+-  //Compile and link procedure
+-  var procedureCode = [
+-    "'use strict';",
+-    "function ", funcName, "(", args.join(), "){",
+-      "var ", vars.join(), ";",
+-      code.join(""),
+-    "}",
+-    "return ", funcName ].join("")
++        if (!ids.length) return null;
+ 
+-  var proc = new Function(
+-    "vertex", 
+-    "face", 
+-    "phase", 
+-    "mallocUint32", 
+-    "freeUint32",
+-    procedureCode)
+-  return proc(
+-    vertexFunc, 
+-    faceFunc, 
+-    phaseFunc, 
+-    pool.mallocUint32, 
+-    pool.freeUint32)
+-}
++        var tile = {
++            features: []
++        };
++        for (var i = 0; i < ids.length; i++) {
++            var c = tree.points[ids[i]];
++            var feature = {
++                type: 1,
++                geometry: [[
++                    Math.round(extent * (c.x * z2 - x)),
++                    Math.round(extent * (c.y * z2 - y))
++                ]],
++                tags: c.id !== -1 ? this.points[c.id].properties : getClusterProperties(c)
++            };
++            tile.features.push(feature);
++        }
++        return tile;
++    },
+ 
+-function createSurfaceExtractor(args) {
+-  function error(msg) {
+-    throw new Error("ndarray-extract-contour: " + msg)
+-  }
+-  if(typeof args !== "object") {
+-    error("Must specify arguments")
+-  }
+-  var order = args.order
+-  if(!Array.isArray(order)) {
+-    error("Must specify order")
+-  }
+-  var arrays = args.arrayArguments||1
+-  if(arrays < 1) {
+-    error("Must have at least one array argument")
+-  }
+-  var scalars = args.scalarArguments||0
+-  if(scalars < 0) {
+-    error("Scalar arg count must be > 0")
+-  }
+-  if(typeof args.vertex !== "function") {
+-    error("Must specify vertex creation function")
+-  }
+-  if(typeof args.cell !== "function") {
+-    error("Must specify cell creation function")
+-  }
+-  if(typeof args.phase !== "function") {
+-    error("Must specify phase function")
+-  }
+-  var getters = args.getters || []
+-  var typesig = new Array(arrays)
+-  for(var i=0; i<arrays; ++i) {
+-    if(getters.indexOf(i) >= 0) {
+-      typesig[i] = true
+-    } else {
+-      typesig[i] = false
+-    }
+-  }
+-  return compileSurfaceProcedure(
+-    args.vertex,
+-    args.cell,
+-    args.phase,
+-    scalars,
+-    order,
+-    typesig)
+-}
+-},{"typedarray-pool":458}],445:[function(require,module,exports){
+-// transliterated from the python snippet here:
+-// http://en.wikipedia.org/wiki/Lanczos_approximation
++    _limitZoom: function (z) {
++        return Math.max(this.options.minZoom, Math.min(z, this.options.maxZoom + 1));
++    },
+ 
+-var g = 7;
+-var p = [
+-    0.99999999999980993,
+-    676.5203681218851,
+-    -1259.1392167224028,
+-    771.32342877765313,
+-    -176.61502916214059,
+-    12.507343278686905,
+-    -0.13857109526572012,
+-    9.9843695780195716e-6,
+-    1.5056327351493116e-7
+-];
++    _cluster: function (points, zoom) {
++        var clusters = [];
++        var r = this.options.radius / (this.options.extent * Math.pow(2, zoom));
+ 
+-var g_ln = 607/128;
+-var p_ln = [
+-    0.99999999999999709182,
+-    57.156235665862923517,
+-    -59.597960355475491248,
+-    14.136097974741747174,
+-    -0.49191381609762019978,
+-    0.33994649984811888699e-4,
+-    0.46523628927048575665e-4,
+-    -0.98374475304879564677e-4,
+-    0.15808870322491248884e-3,
+-    -0.21026444172410488319e-3,
+-    0.21743961811521264320e-3,
+-    -0.16431810653676389022e-3,
+-    0.84418223983852743293e-4,
+-    -0.26190838401581408670e-4,
+-    0.36899182659531622704e-5
+-];
++        // loop through each point
++        for (var i = 0; i < points.length; i++) {
++            var p = points[i];
++            // if we've already visited the point at this zoom level, skip it
++            if (p.zoom <= zoom) continue;
++            p.zoom = zoom;
+ 
+-// Spouge approximation (suitable for large arguments)
+-function lngamma(z) {
++            // find all nearby points
++            var tree = this.trees[zoom + 1];
++            var neighborIds = tree.within(p.x, p.y, r);
+ 
+-    if(z < 0) return Number('0/0');
+-    var x = p_ln[0];
+-    for(var i = p_ln.length - 1; i > 0; --i) x += p_ln[i] / (z + i);
+-    var t = z + g_ln + 0.5;
+-    return .5*Math.log(2*Math.PI)+(z+.5)*Math.log(t)-t+Math.log(x)-Math.log(z);
+-}
++            var foundNeighbors = false;
++            var numPoints = p.numPoints;
++            var wx = p.x * numPoints;
++            var wy = p.y * numPoints;
+ 
+-module.exports = function gamma (z) {
+-    if (z < 0.5) {
+-        return Math.PI / (Math.sin(Math.PI * z) * gamma(1 - z));
+-    }
+-    else if(z > 100) return Math.exp(lngamma(z));
+-    else {
+-        z -= 1;
+-        var x = p[0];
+-        for (var i = 1; i < g + 2; i++) {
+-            x += p[i] / (z + i);
++            for (var j = 0; j < neighborIds.length; j++) {
++                var b = tree.points[neighborIds[j]];
++                // filter out neighbors that are too far or already processed
++                if (zoom < b.zoom) {
++                    foundNeighbors = true;
++                    b.zoom = zoom; // save the zoom (so it doesn't get processed twice)
++                    wx += b.x * b.numPoints; // accumulate coordinates for calculating weighted center
++                    wy += b.y * b.numPoints;
++                    numPoints += b.numPoints;
++                }
++            }
++
++            clusters.push(foundNeighbors ? createCluster(wx / numPoints, wy / numPoints, numPoints, -1) : p);
+         }
+-        var t = z + g + 0.5;
+ 
+-        return Math.sqrt(2 * Math.PI)
+-            * Math.pow(t, z + 0.5)
+-            * Math.exp(-t)
+-            * x
+-        ;
++        return clusters;
+     }
+ };
+ 
+-module.exports.log = lngamma;
+-
+-},{}],446:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = permutationSign
+-
+-var BRUTE_FORCE_CUTOFF = 32
++function createCluster(x, y, numPoints, id) {
++    return {
++        x: x, // weighted cluster center
++        y: y,
++        zoom: Infinity, // the last zoom the cluster was processed at
++        id: id, // index of the source feature in the original input array
++        numPoints: numPoints
++    };
++}
+ 
+-var pool = require("typedarray-pool")
++function createPointCluster(p, i) {
++    var coords = p.geometry.coordinates;
++    return createCluster(lngX(coords[0]), latY(coords[1]), 1, i);
++}
+ 
+-function permutationSign(p) {
+-  var n = p.length
+-  if(n < BRUTE_FORCE_CUTOFF) {
+-    //Use quadratic algorithm for small n
+-    var sgn = 1
+-    for(var i=0; i<n; ++i) {
+-      for(var j=0; j<i; ++j) {
+-        if(p[i] < p[j]) {
+-          sgn = -sgn
+-        } else if(p[i] === p[j]) {
+-          return 0
+-        }
+-      }
+-    }
+-    return sgn
+-  } else {
+-    //Otherwise use linear time algorithm
+-    var visited = pool.mallocUint8(n)
+-    for(var i=0; i<n; ++i) {
+-      visited[i] = 0
+-    }
+-    var sgn = 1
+-    for(var i=0; i<n; ++i) {
+-      if(!visited[i]) {
+-        var count = 1
+-        visited[i] = 1
+-        for(var j=p[i]; j!==i; j=p[j]) {
+-          if(visited[j]) {
+-            pool.freeUint8(visited)
+-            return 0
+-          }
+-          count += 1
+-          visited[j] = 1
+-        }
+-        if(!(count & 1)) {
+-          sgn = -sgn
++function getClusterJSON(cluster) {
++    return {
++        type: 'Feature',
++        properties: getClusterProperties(cluster),
++        geometry: {
++            type: 'Point',
++            coordinates: [xLng(cluster.x), yLat(cluster.y)]
+         }
+-      }
+-    }
+-    pool.freeUint8(visited)
+-    return sgn
+-  }
++    };
+ }
+-},{"typedarray-pool":458}],447:[function(require,module,exports){
+-"use strict"
+ 
+-var pool = require("typedarray-pool")
+-var inverse = require("invert-permutation")
+-
+-function rank(permutation) {
+-  var n = permutation.length
+-  switch(n) {
+-    case 0:
+-    case 1:
+-      return 0
+-    case 2:
+-      return permutation[1]
+-    default:
+-      break
+-  }
+-  var p = pool.mallocUint32(n)
+-  var pinv = pool.mallocUint32(n)
+-  var r = 0, s, t, i
+-  inverse(permutation, pinv)
+-  for(i=0; i<n; ++i) {
+-    p[i] = permutation[i]
+-  }
+-  for(i=n-1; i>0; --i) {
+-    t = pinv[i]
+-    s = p[i]
+-    p[i] = p[t]
+-    p[t] = s
+-    pinv[i] = pinv[s]
+-    pinv[s] = t
+-    r = (r + s) * i
+-  }
+-  pool.freeUint32(pinv)
+-  pool.freeUint32(p)
+-  return r
++function getClusterProperties(cluster) {
++    var count = cluster.numPoints;
++    var abbrev = count >= 10000 ? Math.round(count / 1000) + 'k' :
++                 count >= 1000 ? (Math.round(count / 100) / 10) + 'k' : count;
++    return {
++        cluster: true,
++        point_count: count,
++        point_count_abbreviated: abbrev
++    };
+ }
+ 
+-function unrank(n, r, p) {
+-  switch(n) {
+-    case 0:
+-      if(p) { return p }
+-      return []
+-    case 1:
+-      if(p) {
+-        p[0] = 0
+-        return p
+-      } else {
+-        return [0]
+-      }
+-    case 2:
+-      if(p) {
+-        if(r) {
+-          p[0] = 0
+-          p[1] = 1
+-        } else {
+-          p[0] = 1
+-          p[1] = 0
+-        }
+-        return p
+-      } else {
+-        return r ? [0,1] : [1,0]
+-      }
+-    default:
+-      break
+-  }
+-  p = p || new Array(n)
+-  var s, t, i, nf=1
+-  p[0] = 0
+-  for(i=1; i<n; ++i) {
+-    p[i] = i
+-    nf = (nf*i)|0
+-  }
+-  for(i=n-1; i>0; --i) {
+-    s = (r / nf)|0
+-    r = (r - s * nf)|0
+-    nf = (nf / i)|0
+-    t = p[i]|0
+-    p[i] = p[s]|0
+-    p[s] = t|0
+-  }
+-  return p
++// longitude/latitude to spherical mercator in [0..1] range
++function lngX(lng) {
++    return lng / 360 + 0.5;
++}
++function latY(lat) {
++    var sin = Math.sin(lat * Math.PI / 180),
++        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
++    return y < 0 ? 0 :
++           y > 1 ? 1 : y;
+ }
+ 
+-exports.rank = rank
+-exports.unrank = unrank
++// spherical mercator to longitude/latitude
++function xLng(x) {
++    return (x - 0.5) * 360;
++}
++function yLat(y) {
++    var y2 = (180 - y * 360) * Math.PI / 180;
++    return 360 * Math.atan(Math.exp(y2)) / Math.PI - 90;
++}
+ 
+-},{"invert-permutation":448,"typedarray-pool":458}],448:[function(require,module,exports){
+-"use strict"
++function extend(dest, src) {
++    for (var id in src) dest[id] = src[id];
++    return dest;
++}
+ 
+-function invertPermutation(pi, result) {
+-  result = result || new Array(pi.length)
+-  for(var i=0; i<pi.length; ++i) {
+-    result[pi[i]] = i
+-  }
+-  return result
++function getX(p) {
++    return p.x;
++}
++function getY(p) {
++    return p.y;
+ }
+ 
+-module.exports = invertPermutation
+-},{}],449:[function(require,module,exports){
+-"use strict"
++},{"kdbush":229}],439:[function(require,module,exports){
++'use strict'
+ 
+-module.exports = triangulateCube
++module.exports = toSuperScript
+ 
+-var perm = require("permutation-rank")
+-var sgn = require("permutation-parity")
+-var gamma = require("gamma")
++var SUPERSCRIPTS = {
++  ' ': ' ',
++  '0': '⁰',
++  '1': '¹',
++  '2': '²',
++  '3': '³',
++  '4': '⁴',
++  '5': '⁵',
++  '6': '⁶',
++  '7': '⁷',
++  '8': '⁸',
++  '9': '⁹',
++  '+': '⁺',
++  '-': '⁻',
++  'a': 'ᵃ',
++  'b': 'ᵇ',
++  'c': 'ᶜ',
++  'd': 'ᵈ',
++  'e': 'ᵉ',
++  'f': 'ᶠ',
++  'g': 'ᵍ',
++  'h': 'ʰ',
++  'i': 'ⁱ',
++  'j': 'ʲ',
++  'k': 'ᵏ',
++  'l': 'ˡ',
++  'm': 'ᵐ',
++  'n': 'ⁿ',
++  'o': 'ᵒ',
++  'p': 'ᵖ',
++  'r': 'ʳ',
++  's': 'ˢ',
++  't': 'ᵗ',
++  'u': 'ᵘ',
++  'v': 'ᵛ',
++  'w': 'ʷ',
++  'x': 'ˣ',
++  'y': 'ʸ',
++  'z': 'ᶻ'
++}
+ 
+-function triangulateCube(dimension) {
+-  if(dimension < 0) {
+-    return [ ]
+-  }
+-  if(dimension === 0) {
+-    return [ [0] ]
+-  }
+-  var dfactorial = Math.round(gamma(dimension+1))|0
+-  var result = []
+-  for(var i=0; i<dfactorial; ++i) {
+-    var p = perm.unrank(dimension, i)
+-    var cell = [ 0 ]
+-    var v = 0
+-    for(var j=0; j<p.length; ++j) {
+-      v += (1<<p[j])
+-      cell.push(v)
+-    }
+-    if(sgn(p) < 1) {
+-      cell[0] = v
+-      cell[dimension] = 0
++function toSuperScript(x) {
++  return x.split('').map(function(c) {
++    if(c in SUPERSCRIPTS) {
++      return SUPERSCRIPTS[c]
+     }
+-    result.push(cell)
+-  }
+-  return result
++    return ''
++  }).join('')
+ }
+-},{"gamma":445,"permutation-parity":446,"permutation-rank":447}],450:[function(require,module,exports){
+-module.exports = require('cwise-compiler')({
+-    args: ['array', {
+-        offset: [1],
+-        array: 0
+-    }, 'scalar', 'scalar', 'index'],
+-    pre: {
+-        "body": "{}",
+-        "args": [],
+-        "thisVars": [],
+-        "localVars": []
+-    },
+-    post: {
+-        "body": "{}",
+-        "args": [],
+-        "thisVars": [],
+-        "localVars": []
+-    },
+-    body: {
+-        "body": "{\n        var _inline_1_da = _inline_1_arg0_ - _inline_1_arg3_\n        var _inline_1_db = _inline_1_arg1_ - _inline_1_arg3_\n        if((_inline_1_da >= 0) !== (_inline_1_db >= 0)) {\n          _inline_1_arg2_.push(_inline_1_arg4_[0] + 0.5 + 0.5 * (_inline_1_da + _inline_1_db) / (_inline_1_da - _inline_1_db))\n        }\n      }",
+-        "args": [{
+-            "name": "_inline_1_arg0_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg1_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg2_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg3_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 2
+-        }, {
+-            "name": "_inline_1_arg4_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }],
+-        "thisVars": [],
+-        "localVars": ["_inline_1_da", "_inline_1_db"]
+-    },
+-    funcName: 'zeroCrossings'
+-})
+-
+-},{"cwise-compiler":115}],451:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = findZeroCrossings
+-
+-var core = require("./lib/zc-core")
+ 
+-function findZeroCrossings(array, level) {
+-  var cross = []
+-  level = +level || 0.0
+-  core(array.hi(array.shape[0]-1), cross, level)
+-  return cross
+-}
+-},{"./lib/zc-core":450}],452:[function(require,module,exports){
++},{}],440:[function(require,module,exports){
+ "use strict"
+ 
+ module.exports = surfaceNets
+@@ -75913,7 +77332,7 @@ function surfaceNets(array,level) {
+   }
+   return proc(array,level)
+ }
+-},{"ndarray-extract-contour":444,"triangulate-hypercube":449,"zero-crossings":451}],453:[function(require,module,exports){
++},{"ndarray-extract-contour":374,"triangulate-hypercube":445,"zero-crossings":472}],441:[function(require,module,exports){
+ (function (process){
+ 'use strict'
+ 
+@@ -76002,21 +77421,20 @@ function textGet(font, text) {
+ }
+ 
+ }).call(this,require('_process'))
+-},{"_process":60,"vectorize-text":460}],454:[function(require,module,exports){
+-// TinyColor v1.3.0
++},{"_process":403,"vectorize-text":460}],442:[function(require,module,exports){
++// TinyColor v1.4.1
+ // https://github.com/bgrins/TinyColor
+ // Brian Grinstead, MIT License
+ 
+-(function() {
++(function(Math) {
+ 
+ var trimLeft = /^\s+/,
+     trimRight = /\s+$/,
+     tinyCounter = 0,
+-    math = Math,
+-    mathRound = math.round,
+-    mathMin = math.min,
+-    mathMax = math.max,
+-    mathRandom = math.random;
++    mathRound = Math.round,
++    mathMin = Math.min,
++    mathMax = Math.max,
++    mathRandom = Math.random;
+ 
+ function tinycolor (color, opts) {
+ 
+@@ -76124,11 +77542,11 @@ tinycolor.prototype = {
+     toHexString: function(allow3Char) {
+         return '#' + this.toHex(allow3Char);
+     },
+-    toHex8: function() {
+-        return rgbaToHex(this._r, this._g, this._b, this._a);
++    toHex8: function(allow4Char) {
++        return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
+     },
+-    toHex8String: function() {
+-        return '#' + this.toHex8();
++    toHex8String: function(allow4Char) {
++        return '#' + this.toHex8(allow4Char);
+     },
+     toRgb: function() {
+         return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
+@@ -76158,13 +77576,13 @@ tinycolor.prototype = {
+         return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
+     },
+     toFilter: function(secondColor) {
+-        var hex8String = '#' + rgbaToHex(this._r, this._g, this._b, this._a);
++        var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
+         var secondHex8String = hex8String;
+         var gradientType = this._gradientType ? "GradientType = 1, " : "";
+ 
+         if (secondColor) {
+             var s = tinycolor(secondColor);
+-            secondHex8String = s.toHex8String();
++            secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
+         }
+ 
+         return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
+@@ -76175,7 +77593,7 @@ tinycolor.prototype = {
+ 
+         var formattedString = false;
+         var hasAlpha = this._a < 1 && this._a >= 0;
+-        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "name");
++        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");
+ 
+         if (needsAlphaFormat) {
+             // Special case for "transparent", all other non-alpha formats
+@@ -76197,6 +77615,9 @@ tinycolor.prototype = {
+         if (format === "hex3") {
+             formattedString = this.toHexString(true);
+         }
++        if (format === "hex4") {
++            formattedString = this.toHex8String(true);
++        }
+         if (format === "hex8") {
+             formattedString = this.toHex8String();
+         }
+@@ -76309,6 +77730,9 @@ function inputToRGB(color) {
+ 
+     var rgb = { r: 0, g: 0, b: 0 };
+     var a = 1;
++    var s = null;
++    var v = null;
++    var l = null;
+     var ok = false;
+     var format = false;
+ 
+@@ -76317,22 +77741,22 @@ function inputToRGB(color) {
+     }
+ 
+     if (typeof color == "object") {
+-        if (color.hasOwnProperty("r") && color.hasOwnProperty("g") && color.hasOwnProperty("b")) {
++        if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
+             rgb = rgbToRgb(color.r, color.g, color.b);
+             ok = true;
+             format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
+         }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("v")) {
+-            color.s = convertToPercentage(color.s);
+-            color.v = convertToPercentage(color.v);
+-            rgb = hsvToRgb(color.h, color.s, color.v);
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
++            s = convertToPercentage(color.s);
++            v = convertToPercentage(color.v);
++            rgb = hsvToRgb(color.h, s, v);
+             ok = true;
+             format = "hsv";
+         }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("l")) {
+-            color.s = convertToPercentage(color.s);
+-            color.l = convertToPercentage(color.l);
+-            rgb = hslToRgb(color.h, color.s, color.l);
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
++            s = convertToPercentage(color.s);
++            l = convertToPercentage(color.l);
++            rgb = hslToRgb(color.h, s, l);
+             ok = true;
+             format = "hsl";
+         }
+@@ -76479,7 +77903,7 @@ function rgbToHsv(r, g, b) {
+     s = bound01(s, 100);
+     v = bound01(v, 100);
+ 
+-    var i = math.floor(h),
++    var i = Math.floor(h),
+         f = h - i,
+         p = v * (1 - s),
+         q = v * (1 - f * s),
+@@ -76514,9 +77938,29 @@ function rgbToHex(r, g, b, allow3Char) {
+ 
+ // `rgbaToHex`
+ // Converts an RGBA color plus alpha transparency to hex
+-// Assumes r, g, b and a are contained in the set [0, 255]
+-// Returns an 8 character hex
+-function rgbaToHex(r, g, b, a) {
++// Assumes r, g, b are contained in the set [0, 255] and
++// a in [0, 1]. Returns a 4 or 8 character rgba hex
++function rgbaToHex(r, g, b, a, allow4Char) {
++
++    var hex = [
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16)),
++        pad2(convertDecimalToHex(a))
++    ];
++
++    // Return a 4 character hex if possible
++    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
++        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
++    }
++
++    return hex.join("");
++}
++
++// `rgbaToArgbHex`
++// Converts an RGBA color to an ARGB Hex8 string
++// Rarely used, but required for "toFilter()"
++function rgbaToArgbHex(r, g, b, a) {
+ 
+     var hex = [
+         pad2(convertDecimalToHex(a)),
+@@ -76598,7 +78042,7 @@ function darken (color, amount) {
+ // Values outside of this range will be wrapped into this range.
+ function spin(color, amount) {
+     var hsl = tinycolor(color).toHsl();
+-    var hue = (mathRound(hsl.h) + amount) % 360;
++    var hue = (hsl.h + amount) % 360;
+     hsl.h = hue < 0 ? 360 + hue : hue;
+     return tinycolor(hsl);
+ }
+@@ -76685,26 +78129,12 @@ tinycolor.mix = function(color1, color2, amount) {
+     var rgb2 = tinycolor(color2).toRgb();
+ 
+     var p = amount / 100;
+-    var w = p * 2 - 1;
+-    var a = rgb2.a - rgb1.a;
+-
+-    var w1;
+-
+-    if (w * a == -1) {
+-        w1 = w;
+-    } else {
+-        w1 = (w + a) / (1 + w * a);
+-    }
+-
+-    w1 = (w1 + 1) / 2;
+-
+-    var w2 = 1 - w1;
+ 
+     var rgba = {
+-        r: rgb2.r * w1 + rgb1.r * w2,
+-        g: rgb2.g * w1 + rgb1.g * w2,
+-        b: rgb2.b * w1 + rgb1.b * w2,
+-        a: rgb2.a * p  + rgb1.a * (1 - p)
++        r: ((rgb2.r - rgb1.r) * p) + rgb1.r,
++        g: ((rgb2.g - rgb1.g) * p) + rgb1.g,
++        b: ((rgb2.b - rgb1.b) * p) + rgb1.b,
++        a: ((rgb2.a - rgb1.a) * p) + rgb1.a
+     };
+ 
+     return tinycolor(rgba);
+@@ -76990,7 +78420,7 @@ function bound01(n, max) {
+     }
+ 
+     // Handle floating point rounding errors
+-    if ((math.abs(n - max) < 0.000001)) {
++    if ((Math.abs(n - max) < 0.000001)) {
+         return 1;
+     }
+ 
+@@ -77060,6 +78490,7 @@ var matchers = (function() {
+     var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+ 
+     return {
++        CSS_UNIT: new RegExp(CSS_UNIT),
+         rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
+         rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
+         hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
+@@ -77068,10 +78499,18 @@ var matchers = (function() {
+         hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
+         hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+         hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
++        hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+         hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
+     };
+ })();
+ 
++// `isValidCSSUnit`
++// Take in a single string / number and check to see if it looks like a CSS unit
++// (see `matchers` above for definition).
++function isValidCSSUnit(color) {
++    return !!matchers.CSS_UNIT.exec(color);
++}
++
+ // `stringInputToObject`
+ // Permissive string parsing.  Take in a number of formats, and output an object
+ // based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
+@@ -77112,10 +78551,10 @@ function stringInputToObject(color) {
+     }
+     if ((match = matchers.hex8.exec(color))) {
+         return {
+-            a: convertHexToDecimal(match[1]),
+-            r: parseIntFromHex(match[2]),
+-            g: parseIntFromHex(match[3]),
+-            b: parseIntFromHex(match[4]),
++            r: parseIntFromHex(match[1]),
++            g: parseIntFromHex(match[2]),
++            b: parseIntFromHex(match[3]),
++            a: convertHexToDecimal(match[4]),
+             format: named ? "name" : "hex8"
+         };
+     }
+@@ -77127,6 +78566,15 @@ function stringInputToObject(color) {
+             format: named ? "name" : "hex"
+         };
+     }
++    if ((match = matchers.hex4.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1] + '' + match[1]),
++            g: parseIntFromHex(match[2] + '' + match[2]),
++            b: parseIntFromHex(match[3] + '' + match[3]),
++            a: convertHexToDecimal(match[4] + '' + match[4]),
++            format: named ? "name" : "hex8"
++        };
++    }
+     if ((match = matchers.hex3.exec(color))) {
+         return {
+             r: parseIntFromHex(match[1] + '' + match[1]),
+@@ -77155,571 +78603,1238 @@ function validateWCAG2Parms(parms) {
+     return {"level":level, "size":size};
+ }
+ 
+-// Node: Export function
+-if (typeof module !== "undefined" && module.exports) {
+-    module.exports = tinycolor;
+-}
+-// AMD/requirejs: Define the module
+-else if (typeof define === 'function' && define.amd) {
+-    define(function () {return tinycolor;});
++// Node: Export function
++if (typeof module !== "undefined" && module.exports) {
++    module.exports = tinycolor;
++}
++// AMD/requirejs: Define the module
++else if (typeof define === 'function' && define.amd) {
++    define(function () {return tinycolor;});
++}
++// Browser: Expose to window
++else {
++    window.tinycolor = tinycolor;
++}
++
++})(Math);
++
++},{}],443:[function(require,module,exports){
++'use strict'
++
++var parseUnit = require('parse-unit')
++
++module.exports = toPX
++
++var PIXELS_PER_INCH = 96
++
++function getPropertyInPX(element, prop) {
++  var parts = parseUnit(getComputedStyle(element).getPropertyValue(prop))
++  return parts[0] * toPX(parts[1], element)
++}
++
++//This brutal hack is needed
++function getSizeBrutal(unit, element) {
++  var testDIV = document.createElement('div')
++  testDIV.style['font-size'] = '128' + unit
++  element.appendChild(testDIV)
++  var size = getPropertyInPX(testDIV, 'font-size') / 128
++  element.removeChild(testDIV)
++  return size
++}
++
++function toPX(str, element) {
++  element = element || document.body
++  str = (str || 'px').trim().toLowerCase()
++  if(element === window || element === document) {
++    element = document.body 
++  }
++  switch(str) {
++    case '%':  //Ambiguous, not sure if we should use width or height
++      return element.clientHeight / 100.0
++    case 'ch':
++    case 'ex':
++      return getSizeBrutal(str, element)
++    case 'em':
++      return getPropertyInPX(element, 'font-size')
++    case 'rem':
++      return getPropertyInPX(document.body, 'font-size')
++    case 'vw':
++      return window.innerWidth/100
++    case 'vh':
++      return window.innerHeight/100
++    case 'vmin':
++      return Math.min(window.innerWidth, window.innerHeight) / 100
++    case 'vmax':
++      return Math.max(window.innerWidth, window.innerHeight) / 100
++    case 'in':
++      return PIXELS_PER_INCH
++    case 'cm':
++      return PIXELS_PER_INCH / 2.54
++    case 'mm':
++      return PIXELS_PER_INCH / 25.4
++    case 'pt':
++      return PIXELS_PER_INCH / 72
++    case 'pc':
++      return PIXELS_PER_INCH / 6
++  }
++  return 1
++}
++},{"parse-unit":391}],444:[function(require,module,exports){
++(function (global, factory) {
++  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
++  typeof define === 'function' && define.amd ? define(['exports'], factory) :
++  (factory((global.topojson = global.topojson || {})));
++}(this, (function (exports) { 'use strict';
++
++function noop() {}
++
++function transformAbsolute(transform) {
++  if (!transform) return noop;
++  var x0,
++      y0,
++      kx = transform.scale[0],
++      ky = transform.scale[1],
++      dx = transform.translate[0],
++      dy = transform.translate[1];
++  return function(point, i) {
++    if (!i) x0 = y0 = 0;
++    point[0] = (x0 += point[0]) * kx + dx;
++    point[1] = (y0 += point[1]) * ky + dy;
++  };
++}
++
++function transformRelative(transform) {
++  if (!transform) return noop;
++  var x0,
++      y0,
++      kx = transform.scale[0],
++      ky = transform.scale[1],
++      dx = transform.translate[0],
++      dy = transform.translate[1];
++  return function(point, i) {
++    if (!i) x0 = y0 = 0;
++    var x1 = Math.round((point[0] - dx) / kx),
++        y1 = Math.round((point[1] - dy) / ky);
++    point[0] = x1 - x0;
++    point[1] = y1 - y0;
++    x0 = x1;
++    y0 = y1;
++  };
++}
++
++function reverse(array, n) {
++  var t, j = array.length, i = j - n;
++  while (i < --j) t = array[i], array[i++] = array[j], array[j] = t;
++}
++
++function bisect(a, x) {
++  var lo = 0, hi = a.length;
++  while (lo < hi) {
++    var mid = lo + hi >>> 1;
++    if (a[mid] < x) lo = mid + 1;
++    else hi = mid;
++  }
++  return lo;
++}
++
++function feature(topology, o) {
++  return o.type === "GeometryCollection" ? {
++    type: "FeatureCollection",
++    features: o.geometries.map(function(o) { return feature$1(topology, o); })
++  } : feature$1(topology, o);
++}
++
++function feature$1(topology, o) {
++  var f = {
++    type: "Feature",
++    id: o.id,
++    properties: o.properties || {},
++    geometry: object(topology, o)
++  };
++  if (o.id == null) delete f.id;
++  return f;
++}
++
++function object(topology, o) {
++  var absolute = transformAbsolute(topology.transform),
++      arcs = topology.arcs;
++
++  function arc(i, points) {
++    if (points.length) points.pop();
++    for (var a = arcs[i < 0 ? ~i : i], k = 0, n = a.length, p; k < n; ++k) {
++      points.push(p = a[k].slice());
++      absolute(p, k);
++    }
++    if (i < 0) reverse(points, n);
++  }
++
++  function point(p) {
++    p = p.slice();
++    absolute(p, 0);
++    return p;
++  }
++
++  function line(arcs) {
++    var points = [];
++    for (var i = 0, n = arcs.length; i < n; ++i) arc(arcs[i], points);
++    if (points.length < 2) points.push(points[0].slice());
++    return points;
++  }
++
++  function ring(arcs) {
++    var points = line(arcs);
++    while (points.length < 4) points.push(points[0].slice());
++    return points;
++  }
++
++  function polygon(arcs) {
++    return arcs.map(ring);
++  }
++
++  function geometry(o) {
++    var t = o.type;
++    return t === "GeometryCollection" ? {type: t, geometries: o.geometries.map(geometry)}
++        : t in geometryType ? {type: t, coordinates: geometryType[t](o)}
++        : null;
++  }
++
++  var geometryType = {
++    Point: function(o) { return point(o.coordinates); },
++    MultiPoint: function(o) { return o.coordinates.map(point); },
++    LineString: function(o) { return line(o.arcs); },
++    MultiLineString: function(o) { return o.arcs.map(line); },
++    Polygon: function(o) { return polygon(o.arcs); },
++    MultiPolygon: function(o) { return o.arcs.map(polygon); }
++  };
++
++  return geometry(o);
++}
++
++function stitchArcs(topology, arcs) {
++  var stitchedArcs = {},
++      fragmentByStart = {},
++      fragmentByEnd = {},
++      fragments = [],
++      emptyIndex = -1;
++
++  // Stitch empty arcs first, since they may be subsumed by other arcs.
++  arcs.forEach(function(i, j) {
++    var arc = topology.arcs[i < 0 ? ~i : i], t;
++    if (arc.length < 3 && !arc[1][0] && !arc[1][1]) {
++      t = arcs[++emptyIndex], arcs[emptyIndex] = i, arcs[j] = t;
++    }
++  });
++
++  arcs.forEach(function(i) {
++    var e = ends(i),
++        start = e[0],
++        end = e[1],
++        f, g;
++
++    if (f = fragmentByEnd[start]) {
++      delete fragmentByEnd[f.end];
++      f.push(i);
++      f.end = end;
++      if (g = fragmentByStart[end]) {
++        delete fragmentByStart[g.start];
++        var fg = g === f ? f : f.concat(g);
++        fragmentByStart[fg.start = f.start] = fragmentByEnd[fg.end = g.end] = fg;
++      } else {
++        fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
++      }
++    } else if (f = fragmentByStart[end]) {
++      delete fragmentByStart[f.start];
++      f.unshift(i);
++      f.start = start;
++      if (g = fragmentByEnd[start]) {
++        delete fragmentByEnd[g.end];
++        var gf = g === f ? f : g.concat(f);
++        fragmentByStart[gf.start = g.start] = fragmentByEnd[gf.end = f.end] = gf;
++      } else {
++        fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
++      }
++    } else {
++      f = [i];
++      fragmentByStart[f.start = start] = fragmentByEnd[f.end = end] = f;
++    }
++  });
++
++  function ends(i) {
++    var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
++    if (topology.transform) p1 = [0, 0], arc.forEach(function(dp) { p1[0] += dp[0], p1[1] += dp[1]; });
++    else p1 = arc[arc.length - 1];
++    return i < 0 ? [p1, p0] : [p0, p1];
++  }
++
++  function flush(fragmentByEnd, fragmentByStart) {
++    for (var k in fragmentByEnd) {
++      var f = fragmentByEnd[k];
++      delete fragmentByStart[f.start];
++      delete f.start;
++      delete f.end;
++      f.forEach(function(i) { stitchedArcs[i < 0 ? ~i : i] = 1; });
++      fragments.push(f);
++    }
++  }
++
++  flush(fragmentByEnd, fragmentByStart);
++  flush(fragmentByStart, fragmentByEnd);
++  arcs.forEach(function(i) { if (!stitchedArcs[i < 0 ? ~i : i]) fragments.push([i]); });
++
++  return fragments;
+ }
+-// Browser: Expose to window
+-else {
+-    window.tinycolor = tinycolor;
++
++function mesh(topology) {
++  return object(topology, meshArcs.apply(this, arguments));
+ }
+ 
+-})();
++function meshArcs(topology, o, filter) {
++  var arcs = [];
+ 
+-},{}],455:[function(require,module,exports){
+-(function (global, factory) {
+-  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+-  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+-  (factory((global.topojson = {})));
+-}(this, function (exports) { 'use strict';
++  function arc(i) {
++    var j = i < 0 ? ~i : i;
++    (geomsByArc[j] || (geomsByArc[j] = [])).push({i: i, g: geom});
++  }
+ 
+-  function noop() {}
++  function line(arcs) {
++    arcs.forEach(arc);
++  }
+ 
+-  function absolute(transform) {
+-    if (!transform) return noop;
+-    var x0,
+-        y0,
+-        kx = transform.scale[0],
+-        ky = transform.scale[1],
+-        dx = transform.translate[0],
+-        dy = transform.translate[1];
+-    return function(point, i) {
+-      if (!i) x0 = y0 = 0;
+-      point[0] = (x0 += point[0]) * kx + dx;
+-      point[1] = (y0 += point[1]) * ky + dy;
+-    };
++  function polygon(arcs) {
++    arcs.forEach(line);
+   }
+ 
+-  function relative(transform) {
+-    if (!transform) return noop;
+-    var x0,
+-        y0,
+-        kx = transform.scale[0],
+-        ky = transform.scale[1],
+-        dx = transform.translate[0],
+-        dy = transform.translate[1];
+-    return function(point, i) {
+-      if (!i) x0 = y0 = 0;
+-      var x1 = (point[0] - dx) / kx | 0,
+-          y1 = (point[1] - dy) / ky | 0;
+-      point[0] = x1 - x0;
+-      point[1] = y1 - y0;
+-      x0 = x1;
+-      y0 = y1;
++  function geometry(o) {
++    if (o.type === "GeometryCollection") o.geometries.forEach(geometry);
++    else if (o.type in geometryType) geom = o, geometryType[o.type](o.arcs);
++  }
++
++  if (arguments.length > 1) {
++    var geomsByArc = [],
++        geom;
++
++    var geometryType = {
++      LineString: line,
++      MultiLineString: polygon,
++      Polygon: polygon,
++      MultiPolygon: function(arcs) { arcs.forEach(polygon); }
+     };
++
++    geometry(o);
++
++    geomsByArc.forEach(arguments.length < 3
++        ? function(geoms) { arcs.push(geoms[0].i); }
++        : function(geoms) { if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs.push(geoms[0].i); });
++  } else {
++    for (var i = 0, n = topology.arcs.length; i < n; ++i) arcs.push(i);
+   }
+ 
+-  function reverse(array, n) {
+-    var t, j = array.length, i = j - n;
+-    while (i < --j) t = array[i], array[i++] = array[j], array[j] = t;
++  return {type: "MultiLineString", arcs: stitchArcs(topology, arcs)};
++}
++
++function cartesianTriangleArea(triangle) {
++  var a = triangle[0], b = triangle[1], c = triangle[2];
++  return Math.abs((a[0] - c[0]) * (b[1] - a[1]) - (a[0] - b[0]) * (c[1] - a[1]));
++}
++
++function ring(ring) {
++  var i = -1,
++      n = ring.length,
++      a,
++      b = ring[n - 1],
++      area = 0;
++
++  while (++i < n) {
++    a = b;
++    b = ring[i];
++    area += a[0] * b[1] - a[1] * b[0];
+   }
+ 
+-  function bisect(a, x) {
+-    var lo = 0, hi = a.length;
+-    while (lo < hi) {
+-      var mid = lo + hi >>> 1;
+-      if (a[mid] < x) lo = mid + 1;
+-      else hi = mid;
++  return area / 2;
++}
++
++function merge(topology) {
++  return object(topology, mergeArcs.apply(this, arguments));
++}
++
++function mergeArcs(topology, objects) {
++  var polygonsByArc = {},
++      polygons = [],
++      components = [];
++
++  objects.forEach(function(o) {
++    if (o.type === "Polygon") register(o.arcs);
++    else if (o.type === "MultiPolygon") o.arcs.forEach(register);
++  });
++
++  function register(polygon) {
++    polygon.forEach(function(ring$$) {
++      ring$$.forEach(function(arc) {
++        (polygonsByArc[arc = arc < 0 ? ~arc : arc] || (polygonsByArc[arc] = [])).push(polygon);
++      });
++    });
++    polygons.push(polygon);
++  }
++
++  function area(ring$$) {
++    return Math.abs(ring(object(topology, {type: "Polygon", arcs: [ring$$]}).coordinates[0]));
++  }
++
++  polygons.forEach(function(polygon) {
++    if (!polygon._) {
++      var component = [],
++          neighbors = [polygon];
++      polygon._ = 1;
++      components.push(component);
++      while (polygon = neighbors.pop()) {
++        component.push(polygon);
++        polygon.forEach(function(ring$$) {
++          ring$$.forEach(function(arc) {
++            polygonsByArc[arc < 0 ? ~arc : arc].forEach(function(polygon) {
++              if (!polygon._) {
++                polygon._ = 1;
++                neighbors.push(polygon);
++              }
++            });
++          });
++        });
++      }
+     }
+-    return lo;
++  });
++
++  polygons.forEach(function(polygon) {
++    delete polygon._;
++  });
++
++  return {
++    type: "MultiPolygon",
++    arcs: components.map(function(polygons) {
++      var arcs = [], n;
++
++      // Extract the exterior (unique) arcs.
++      polygons.forEach(function(polygon) {
++        polygon.forEach(function(ring$$) {
++          ring$$.forEach(function(arc) {
++            if (polygonsByArc[arc < 0 ? ~arc : arc].length < 2) {
++              arcs.push(arc);
++            }
++          });
++        });
++      });
++
++      // Stitch the arcs into one or more rings.
++      arcs = stitchArcs(topology, arcs);
++
++      // If more than one ring is returned,
++      // at most one of these rings can be the exterior;
++      // choose the one with the greatest absolute area.
++      if ((n = arcs.length) > 1) {
++        for (var i = 1, k = area(arcs[0]), ki, t; i < n; ++i) {
++          if ((ki = area(arcs[i])) > k) {
++            t = arcs[0], arcs[0] = arcs[i], arcs[i] = t, k = ki;
++          }
++        }
++      }
++
++      return arcs;
++    })
++  };
++}
++
++function neighbors(objects) {
++  var indexesByArc = {}, // arc index -> array of object indexes
++      neighbors = objects.map(function() { return []; });
++
++  function line(arcs, i) {
++    arcs.forEach(function(a) {
++      if (a < 0) a = ~a;
++      var o = indexesByArc[a];
++      if (o) o.push(i);
++      else indexesByArc[a] = [i];
++    });
+   }
+ 
+-  function feature(topology, o) {
+-    return o.type === "GeometryCollection" ? {
+-      type: "FeatureCollection",
+-      features: o.geometries.map(function(o) { return feature$1(topology, o); })
+-    } : feature$1(topology, o);
++  function polygon(arcs, i) {
++    arcs.forEach(function(arc) { line(arc, i); });
+   }
+ 
+-  function feature$1(topology, o) {
+-    var f = {
+-      type: "Feature",
+-      id: o.id,
+-      properties: o.properties || {},
+-      geometry: object(topology, o)
+-    };
+-    if (o.id == null) delete f.id;
+-    return f;
++  function geometry(o, i) {
++    if (o.type === "GeometryCollection") o.geometries.forEach(function(o) { geometry(o, i); });
++    else if (o.type in geometryType) geometryType[o.type](o.arcs, i);
+   }
+ 
+-  function object(topology, o) {
+-    var absolute$$ = absolute(topology.transform),
+-        arcs = topology.arcs;
++  var geometryType = {
++    LineString: line,
++    MultiLineString: polygon,
++    Polygon: polygon,
++    MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); }
++  };
++
++  objects.forEach(geometry);
+ 
+-    function arc(i, points) {
+-      if (points.length) points.pop();
+-      for (var a = arcs[i < 0 ? ~i : i], k = 0, n = a.length, p; k < n; ++k) {
+-        points.push(p = a[k].slice());
+-        absolute$$(p, k);
++  for (var i in indexesByArc) {
++    for (var indexes = indexesByArc[i], m = indexes.length, j = 0; j < m; ++j) {
++      for (var k = j + 1; k < m; ++k) {
++        var ij = indexes[j], ik = indexes[k], n;
++        if ((n = neighbors[ij])[i = bisect(n, ik)] !== ik) n.splice(i, 0, ik);
++        if ((n = neighbors[ik])[i = bisect(n, ij)] !== ij) n.splice(i, 0, ij);
+       }
+-      if (i < 0) reverse(points, n);
+     }
++  }
+ 
+-    function point(p) {
+-      p = p.slice();
+-      absolute$$(p, 0);
+-      return p;
+-    }
++  return neighbors;
++}
++
++function compareArea(a, b) {
++  return a[1][2] - b[1][2];
++}
++
++function minAreaHeap() {
++  var heap = {},
++      array = [],
++      size = 0;
++
++  heap.push = function(object) {
++    up(array[object._ = size] = object, size++);
++    return size;
++  };
++
++  heap.pop = function() {
++    if (size <= 0) return;
++    var removed = array[0], object;
++    if (--size > 0) object = array[size], down(array[object._ = 0] = object, 0);
++    return removed;
++  };
++
++  heap.remove = function(removed) {
++    var i = removed._, object;
++    if (array[i] !== removed) return; // invalid request
++    if (i !== --size) object = array[size], (compareArea(object, removed) < 0 ? up : down)(array[object._ = i] = object, i);
++    return i;
++  };
+ 
+-    function line(arcs) {
+-      var points = [];
+-      for (var i = 0, n = arcs.length; i < n; ++i) arc(arcs[i], points);
+-      if (points.length < 2) points.push(points[0].slice());
+-      return points;
++  function up(object, i) {
++    while (i > 0) {
++      var j = ((i + 1) >> 1) - 1,
++          parent = array[j];
++      if (compareArea(object, parent) >= 0) break;
++      array[parent._ = i] = parent;
++      array[object._ = i = j] = object;
+     }
++  }
+ 
+-    function ring(arcs) {
+-      var points = line(arcs);
+-      while (points.length < 4) points.push(points[0].slice());
+-      return points;
++  function down(object, i) {
++    while (true) {
++      var r = (i + 1) << 1,
++          l = r - 1,
++          j = i,
++          child = array[j];
++      if (l < size && compareArea(array[l], child) < 0) child = array[j = l];
++      if (r < size && compareArea(array[r], child) < 0) child = array[j = r];
++      if (j === i) break;
++      array[child._ = i] = child;
++      array[object._ = i = j] = object;
+     }
++  }
++
++  return heap;
++}
++
++function presimplify(topology, triangleArea) {
++  var absolute = transformAbsolute(topology.transform),
++      relative = transformRelative(topology.transform),
++      heap = minAreaHeap();
++
++  if (!triangleArea) triangleArea = cartesianTriangleArea;
++
++  topology.arcs.forEach(function(arc) {
++    var triangles = [],
++        maxArea = 0,
++        triangle,
++        i,
++        n,
++        p;
+ 
+-    function polygon(arcs) {
+-      return arcs.map(ring);
++    // To store each point’s effective area, we create a new array rather than
++    // extending the passed-in point to workaround a Chrome/V8 bug (getting
++    // stuck in smi mode). For midpoints, the initial effective area of
++    // Infinity will be computed in the next step.
++    for (i = 0, n = arc.length; i < n; ++i) {
++      p = arc[i];
++      absolute(arc[i] = [p[0], p[1], Infinity], i);
+     }
+ 
+-    function geometry(o) {
+-      var t = o.type;
+-      return t === "GeometryCollection" ? {type: t, geometries: o.geometries.map(geometry)}
+-          : t in geometryType ? {type: t, coordinates: geometryType[t](o)}
+-          : null;
++    for (i = 1, n = arc.length - 1; i < n; ++i) {
++      triangle = arc.slice(i - 1, i + 2);
++      triangle[1][2] = triangleArea(triangle);
++      triangles.push(triangle);
++      heap.push(triangle);
+     }
+ 
+-    var geometryType = {
+-      Point: function(o) { return point(o.coordinates); },
+-      MultiPoint: function(o) { return o.coordinates.map(point); },
+-      LineString: function(o) { return line(o.arcs); },
+-      MultiLineString: function(o) { return o.arcs.map(line); },
+-      Polygon: function(o) { return polygon(o.arcs); },
+-      MultiPolygon: function(o) { return o.arcs.map(polygon); }
+-    };
++    for (i = 0, n = triangles.length; i < n; ++i) {
++      triangle = triangles[i];
++      triangle.previous = triangles[i - 1];
++      triangle.next = triangles[i + 1];
++    }
+ 
+-    return geometry(o);
+-  }
++    while (triangle = heap.pop()) {
++      var previous = triangle.previous,
++          next = triangle.next;
+ 
+-  function stitchArcs(topology, arcs) {
+-    var stitchedArcs = {},
+-        fragmentByStart = {},
+-        fragmentByEnd = {},
+-        fragments = [],
+-        emptyIndex = -1;
++      // If the area of the current point is less than that of the previous point
++      // to be eliminated, use the latter's area instead. This ensures that the
++      // current point cannot be eliminated without eliminating previously-
++      // eliminated points.
++      if (triangle[1][2] < maxArea) triangle[1][2] = maxArea;
++      else maxArea = triangle[1][2];
+ 
+-    // Stitch empty arcs first, since they may be subsumed by other arcs.
+-    arcs.forEach(function(i, j) {
+-      var arc = topology.arcs[i < 0 ? ~i : i], t;
+-      if (arc.length < 3 && !arc[1][0] && !arc[1][1]) {
+-        t = arcs[++emptyIndex], arcs[emptyIndex] = i, arcs[j] = t;
++      if (previous) {
++        previous.next = next;
++        previous[2] = triangle[2];
++        update(previous);
+       }
+-    });
+ 
+-    arcs.forEach(function(i) {
+-      var e = ends(i),
+-          start = e[0],
+-          end = e[1],
+-          f, g;
+-
+-      if (f = fragmentByEnd[start]) {
+-        delete fragmentByEnd[f.end];
+-        f.push(i);
+-        f.end = end;
+-        if (g = fragmentByStart[end]) {
+-          delete fragmentByStart[g.start];
+-          var fg = g === f ? f : f.concat(g);
+-          fragmentByStart[fg.start = f.start] = fragmentByEnd[fg.end = g.end] = fg;
+-        } else {
+-          fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
+-        }
+-      } else if (f = fragmentByStart[end]) {
+-        delete fragmentByStart[f.start];
+-        f.unshift(i);
+-        f.start = start;
+-        if (g = fragmentByEnd[start]) {
+-          delete fragmentByEnd[g.end];
+-          var gf = g === f ? f : g.concat(f);
+-          fragmentByStart[gf.start = g.start] = fragmentByEnd[gf.end = f.end] = gf;
+-        } else {
+-          fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
+-        }
+-      } else {
+-        f = [i];
+-        fragmentByStart[f.start = start] = fragmentByEnd[f.end = end] = f;
++      if (next) {
++        next.previous = previous;
++        next[0] = triangle[0];
++        update(next);
+       }
+-    });
+-
+-    function ends(i) {
+-      var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
+-      if (topology.transform) p1 = [0, 0], arc.forEach(function(dp) { p1[0] += dp[0], p1[1] += dp[1]; });
+-      else p1 = arc[arc.length - 1];
+-      return i < 0 ? [p1, p0] : [p0, p1];
+     }
+ 
+-    function flush(fragmentByEnd, fragmentByStart) {
+-      for (var k in fragmentByEnd) {
+-        var f = fragmentByEnd[k];
+-        delete fragmentByStart[f.start];
+-        delete f.start;
+-        delete f.end;
+-        f.forEach(function(i) { stitchedArcs[i < 0 ? ~i : i] = 1; });
+-        fragments.push(f);
+-      }
++    arc.forEach(relative);
++  });
++
++  function update(triangle) {
++    heap.remove(triangle);
++    triangle[1][2] = triangleArea(triangle);
++    heap.push(triangle);
++  }
++
++  return topology;
++}
++
++var version = "1.6.27";
++
++exports.version = version;
++exports.mesh = mesh;
++exports.meshArcs = meshArcs;
++exports.merge = merge;
++exports.mergeArcs = mergeArcs;
++exports.feature = feature;
++exports.neighbors = neighbors;
++exports.presimplify = presimplify;
++
++Object.defineProperty(exports, '__esModule', { value: true });
++
++})));
++},{}],445:[function(require,module,exports){
++"use strict"
++
++module.exports = triangulateCube
++
++var perm = require("permutation-rank")
++var sgn = require("permutation-parity")
++var gamma = require("gamma")
++
++function triangulateCube(dimension) {
++  if(dimension < 0) {
++    return [ ]
++  }
++  if(dimension === 0) {
++    return [ [0] ]
++  }
++  var dfactorial = Math.round(gamma(dimension+1))|0
++  var result = []
++  for(var i=0; i<dfactorial; ++i) {
++    var p = perm.unrank(dimension, i)
++    var cell = [ 0 ]
++    var v = 0
++    for(var j=0; j<p.length; ++j) {
++      v += (1<<p[j])
++      cell.push(v)
++    }
++    if(sgn(p) < 1) {
++      cell[0] = v
++      cell[dimension] = 0
+     }
++    result.push(cell)
++  }
++  return result
++}
++},{"gamma":102,"permutation-parity":395,"permutation-rank":396}],446:[function(require,module,exports){
++'use strict'
++
++module.exports = createTurntableController
+ 
+-    flush(fragmentByEnd, fragmentByStart);
+-    flush(fragmentByStart, fragmentByEnd);
+-    arcs.forEach(function(i) { if (!stitchedArcs[i < 0 ? ~i : i]) fragments.push([i]); });
++var filterVector = require('filtered-vector')
++var invert44     = require('gl-mat4/invert')
++var rotateM      = require('gl-mat4/rotate')
++var cross        = require('gl-vec3/cross')
++var normalize3   = require('gl-vec3/normalize')
++var dot3         = require('gl-vec3/dot')
++
++function len3(x, y, z) {
++  return Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2) + Math.pow(z, 2))
++}
++
++function clamp1(x) {
++  return Math.min(1.0, Math.max(-1.0, x))
++}
++
++function findOrthoPair(v) {
++  var vx = Math.abs(v[0])
++  var vy = Math.abs(v[1])
++  var vz = Math.abs(v[2])
++
++  var u = [0,0,0]
++  if(vx > Math.max(vy, vz)) {
++    u[2] = 1
++  } else if(vy > Math.max(vx, vz)) {
++    u[0] = 1
++  } else {
++    u[1] = 1
++  }
+ 
+-    return fragments;
++  var vv = 0
++  var uv = 0
++  for(var i=0; i<3; ++i ) {
++    vv += v[i] * v[i]
++    uv += u[i] * v[i]
++  }
++  for(var i=0; i<3; ++i) {
++    u[i] -= (uv / vv) *  v[i]
+   }
++  normalize3(u, u)
++  return u
++}
++
++function TurntableController(zoomMin, zoomMax, center, up, right, radius, theta, phi) {
++  this.center = filterVector(center)
++  this.up     = filterVector(up)
++  this.right  = filterVector(right)
++  this.radius = filterVector([radius])
++  this.angle  = filterVector([theta, phi])
++  this.angle.bounds = [[-Infinity,-Math.PI/2], [Infinity,Math.PI/2]]
++  this.setDistanceLimits(zoomMin, zoomMax)
+ 
+-  function mesh(topology) {
+-    return object(topology, meshArcs.apply(this, arguments));
++  this.computedCenter = this.center.curve(0)
++  this.computedUp     = this.up.curve(0)
++  this.computedRight  = this.right.curve(0)
++  this.computedRadius = this.radius.curve(0)
++  this.computedAngle  = this.angle.curve(0)
++  this.computedToward = [0,0,0]
++  this.computedEye    = [0,0,0]
++  this.computedMatrix = new Array(16)
++  for(var i=0; i<16; ++i) {
++    this.computedMatrix[i] = 0.5
+   }
+ 
+-  function meshArcs(topology, o, filter) {
+-    var arcs = [];
++  this.recalcMatrix(0)
++}
+ 
+-    function arc(i) {
+-      var j = i < 0 ? ~i : i;
+-      (geomsByArc[j] || (geomsByArc[j] = [])).push({i: i, g: geom});
+-    }
++var proto = TurntableController.prototype
+ 
+-    function line(arcs) {
+-      arcs.forEach(arc);
+-    }
++proto.setDistanceLimits = function(minDist, maxDist) {
++  if(minDist > 0) {
++    minDist = Math.log(minDist)
++  } else {
++    minDist = -Infinity
++  }
++  if(maxDist > 0) {
++    maxDist = Math.log(maxDist)
++  } else {
++    maxDist = Infinity
++  }
++  maxDist = Math.max(maxDist, minDist)
++  this.radius.bounds[0][0] = minDist
++  this.radius.bounds[1][0] = maxDist
++}
++
++proto.getDistanceLimits = function(out) {
++  var bounds = this.radius.bounds[0]
++  if(out) {
++    out[0] = Math.exp(bounds[0][0])
++    out[1] = Math.exp(bounds[1][0])
++    return out
++  }
++  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
++}
++
++proto.recalcMatrix = function(t) {
++  //Recompute curves
++  this.center.curve(t)
++  this.up.curve(t)
++  this.right.curve(t)
++  this.radius.curve(t)
++  this.angle.curve(t)
+ 
+-    function polygon(arcs) {
+-      arcs.forEach(line);
++  //Compute frame for camera matrix
++  var up     = this.computedUp
++  var right  = this.computedRight
++  var uu = 0.0
++  var ur = 0.0
++  for(var i=0; i<3; ++i) {
++    ur += up[i] * right[i]
++    uu += up[i] * up[i]
++  }
++  var ul = Math.sqrt(uu)
++  var rr = 0.0
++  for(var i=0; i<3; ++i) {
++    right[i] -= up[i] * ur / uu
++    rr       += right[i] * right[i]
++    up[i]    /= ul
++  }
++  var rl = Math.sqrt(rr)
++  for(var i=0; i<3; ++i) {
++    right[i] /= rl
++  }
++
++  //Compute toward vector
++  var toward = this.computedToward
++  cross(toward, up, right)
++  normalize3(toward, toward)
++
++  //Compute angular parameters
++  var radius = Math.exp(this.computedRadius[0])
++  var theta  = this.computedAngle[0]
++  var phi    = this.computedAngle[1]
++
++  var ctheta = Math.cos(theta)
++  var stheta = Math.sin(theta)
++  var cphi   = Math.cos(phi)
++  var sphi   = Math.sin(phi)
++
++  var center = this.computedCenter
++
++  var wx = ctheta * cphi 
++  var wy = stheta * cphi
++  var wz = sphi
++
++  var sx = -ctheta * sphi
++  var sy = -stheta * sphi
++  var sz = cphi
++
++  var eye = this.computedEye
++  var mat = this.computedMatrix
++  for(var i=0; i<3; ++i) {
++    var x      = wx * right[i] + wy * toward[i] + wz * up[i]
++    mat[4*i+1] = sx * right[i] + sy * toward[i] + sz * up[i]
++    mat[4*i+2] = x
++    mat[4*i+3] = 0.0
++  }
++
++  var ax = mat[1]
++  var ay = mat[5]
++  var az = mat[9]
++  var bx = mat[2]
++  var by = mat[6]
++  var bz = mat[10]
++  var cx = ay * bz - az * by
++  var cy = az * bx - ax * bz
++  var cz = ax * by - ay * bx
++  var cl = len3(cx, cy, cz)
++  cx /= cl
++  cy /= cl
++  cz /= cl
++  mat[0] = cx
++  mat[4] = cy
++  mat[8] = cz
++
++  for(var i=0; i<3; ++i) {
++    eye[i] = center[i] + mat[2+4*i]*radius
++  }
++
++  for(var i=0; i<3; ++i) {
++    var rr = 0.0
++    for(var j=0; j<3; ++j) {
++      rr += mat[i+4*j] * eye[j]
+     }
++    mat[12+i] = -rr
++  }
++  mat[15] = 1.0
++}
+ 
+-    function geometry(o) {
+-      if (o.type === "GeometryCollection") o.geometries.forEach(geometry);
+-      else if (o.type in geometryType) geom = o, geometryType[o.type](o.arcs);
++proto.getMatrix = function(t, result) {
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
++  if(result) {
++    for(var i=0; i<16; ++i) {
++      result[i] = mat[i]
+     }
++    return result
++  }
++  return mat
++}
+ 
+-    if (arguments.length > 1) {
+-      var geomsByArc = [],
+-          geom;
+-
+-      var geometryType = {
+-        LineString: line,
+-        MultiLineString: polygon,
+-        Polygon: polygon,
+-        MultiPolygon: function(arcs) { arcs.forEach(polygon); }
+-      };
++var zAxis = [0,0,0]
++proto.rotate = function(t, dtheta, dphi, droll) {
++  this.angle.move(t, dtheta, dphi)
++  if(droll) {
++    this.recalcMatrix(t)
++
++    var mat = this.computedMatrix
++    zAxis[0] = mat[2]
++    zAxis[1] = mat[6]
++    zAxis[2] = mat[10]
+ 
+-      geometry(o);
++    var up     = this.computedUp
++    var right  = this.computedRight
++    var toward = this.computedToward
+ 
+-      geomsByArc.forEach(arguments.length < 3
+-          ? function(geoms) { arcs.push(geoms[0].i); }
+-          : function(geoms) { if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs.push(geoms[0].i); });
+-    } else {
+-      for (var i = 0, n = topology.arcs.length; i < n; ++i) arcs.push(i);
++    for(var i=0; i<3; ++i) {
++      mat[4*i]   = up[i]
++      mat[4*i+1] = right[i]
++      mat[4*i+2] = toward[i]
++    }
++    rotateM(mat, mat, droll, zAxis)
++    for(var i=0; i<3; ++i) {
++      up[i] =    mat[4*i]
++      right[i] = mat[4*i+1]
+     }
+ 
+-    return {type: "MultiLineString", arcs: stitchArcs(topology, arcs)};
++    this.up.set(t, up[0], up[1], up[2])
++    this.right.set(t, right[0], right[1], right[2])
++  }
++}
++
++proto.pan = function(t, dx, dy, dz) {
++  dx = dx || 0.0
++  dy = dy || 0.0
++  dz = dz || 0.0
++
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
++
++  var dist = Math.exp(this.computedRadius[0])
++
++  var ux = mat[1]
++  var uy = mat[5]
++  var uz = mat[9]
++  var ul = len3(ux, uy, uz)
++  ux /= ul
++  uy /= ul
++  uz /= ul
++
++  var rx = mat[0]
++  var ry = mat[4]
++  var rz = mat[8]
++  var ru = rx * ux + ry * uy + rz * uz
++  rx -= ux * ru
++  ry -= uy * ru
++  rz -= uz * ru
++  var rl = len3(rx, ry, rz)
++  rx /= rl
++  ry /= rl
++  rz /= rl
++
++  var vx = rx * dx + ux * dy
++  var vy = ry * dx + uy * dy
++  var vz = rz * dx + uz * dy
++  this.center.move(t, vx, vy, vz)
++
++  //Update z-component of radius
++  var radius = Math.exp(this.computedRadius[0])
++  radius = Math.max(1e-4, radius + dz)
++  this.radius.set(t, Math.log(radius))
++}
++
++proto.translate = function(t, dx, dy, dz) {
++  this.center.move(t,
++    dx||0.0,
++    dy||0.0,
++    dz||0.0)
++}
++
++//Recenters the coordinate axes
++proto.setMatrix = function(t, mat, axes, noSnap) {
++  
++  //Get the axes for tare
++  var ushift = 1
++  if(typeof axes === 'number') {
++    ushift = (axes)|0
++  } 
++  if(ushift < 0 || ushift > 3) {
++    ushift = 1
++  }
++  var vshift = (ushift + 2) % 3
++  var fshift = (ushift + 1) % 3
++
++  //Recompute state for new t value
++  if(!mat) { 
++    this.recalcMatrix(t)
++    mat = this.computedMatrix
+   }
+ 
+-  function triangle(triangle) {
+-    var a = triangle[0], b = triangle[1], c = triangle[2];
+-    return Math.abs((a[0] - c[0]) * (b[1] - a[1]) - (a[0] - b[0]) * (c[1] - a[1]));
++  //Get right and up vectors
++  var ux = mat[ushift]
++  var uy = mat[ushift+4]
++  var uz = mat[ushift+8]
++  if(!noSnap) {
++    var ul = len3(ux, uy, uz)
++    ux /= ul
++    uy /= ul
++    uz /= ul
++  } else {
++    var ax = Math.abs(ux)
++    var ay = Math.abs(uy)
++    var az = Math.abs(uz)
++    var am = Math.max(ax,ay,az)
++    if(ax === am) {
++      ux = (ux < 0) ? -1 : 1
++      uy = uz = 0
++    } else if(az === am) {
++      uz = (uz < 0) ? -1 : 1
++      ux = uy = 0
++    } else {
++      uy = (uy < 0) ? -1 : 1
++      ux = uz = 0
++    }
+   }
+ 
+-  function ring(ring) {
+-    var i = -1,
+-        n = ring.length,
+-        a,
+-        b = ring[n - 1],
+-        area = 0;
++  var rx = mat[vshift]
++  var ry = mat[vshift+4]
++  var rz = mat[vshift+8]
++  var ru = rx * ux + ry * uy + rz * uz
++  rx -= ux * ru
++  ry -= uy * ru
++  rz -= uz * ru
++  var rl = len3(rx, ry, rz)
++  rx /= rl
++  ry /= rl
++  rz /= rl
++  
++  var fx = uy * rz - uz * ry
++  var fy = uz * rx - ux * rz
++  var fz = ux * ry - uy * rx
++  var fl = len3(fx, fy, fz)
++  fx /= fl
++  fy /= fl
++  fz /= fl
++
++  this.center.jump(t, ex, ey, ez)
++  this.radius.idle(t)
++  this.up.jump(t, ux, uy, uz)
++  this.right.jump(t, rx, ry, rz)
+ 
+-    while (++i < n) {
+-      a = b;
+-      b = ring[i];
+-      area += a[0] * b[1] - a[1] * b[0];
++  var phi, theta
++  if(ushift === 2) {
++    var cx = mat[1]
++    var cy = mat[5]
++    var cz = mat[9]
++    var cr = cx * rx + cy * ry + cz * rz
++    var cf = cx * fx + cy * fy + cz * fz
++    if(tu < 0) {
++      phi = -Math.PI/2
++    } else {
++      phi = Math.PI/2
+     }
++    theta = Math.atan2(cf, cr)
++  } else {
++    var tx = mat[2]
++    var ty = mat[6]
++    var tz = mat[10]
++    var tu = tx * ux + ty * uy + tz * uz
++    var tr = tx * rx + ty * ry + tz * rz
++    var tf = tx * fx + ty * fy + tz * fz
+ 
+-    return area / 2;
++    phi = Math.asin(clamp1(tu))
++    theta = Math.atan2(tf, tr)
+   }
+ 
+-  function merge(topology) {
+-    return object(topology, mergeArcs.apply(this, arguments));
+-  }
++  this.angle.jump(t, theta, phi)
+ 
+-  function mergeArcs(topology, objects) {
+-    var polygonsByArc = {},
+-        polygons = [],
+-        components = [];
++  this.recalcMatrix(t)
++  var dx = mat[2]
++  var dy = mat[6]
++  var dz = mat[10]
+ 
+-    objects.forEach(function(o) {
+-      if (o.type === "Polygon") register(o.arcs);
+-      else if (o.type === "MultiPolygon") o.arcs.forEach(register);
+-    });
++  var imat = this.computedMatrix
++  invert44(imat, mat)
++  var w  = imat[15]
++  var ex = imat[12] / w
++  var ey = imat[13] / w
++  var ez = imat[14] / w
+ 
+-    function register(polygon) {
+-      polygon.forEach(function(ring$$) {
+-        ring$$.forEach(function(arc) {
+-          (polygonsByArc[arc = arc < 0 ? ~arc : arc] || (polygonsByArc[arc] = [])).push(polygon);
+-        });
+-      });
+-      polygons.push(polygon);
+-    }
+-
+-    function exterior(ring$$) {
+-      return ring(object(topology, {type: "Polygon", arcs: [ring$$]}).coordinates[0]) > 0; // TODO allow spherical?
+-    }
+-
+-    polygons.forEach(function(polygon) {
+-      if (!polygon._) {
+-        var component = [],
+-            neighbors = [polygon];
+-        polygon._ = 1;
+-        components.push(component);
+-        while (polygon = neighbors.pop()) {
+-          component.push(polygon);
+-          polygon.forEach(function(ring$$) {
+-            ring$$.forEach(function(arc) {
+-              polygonsByArc[arc < 0 ? ~arc : arc].forEach(function(polygon) {
+-                if (!polygon._) {
+-                  polygon._ = 1;
+-                  neighbors.push(polygon);
+-                }
+-              });
+-            });
+-          });
+-        }
+-      }
+-    });
++  var gs = Math.exp(this.computedRadius[0])
++  this.center.jump(t, ex-dx*gs, ey-dy*gs, ez-dz*gs)
++}
+ 
+-    polygons.forEach(function(polygon) {
+-      delete polygon._;
+-    });
++proto.lastT = function() {
++  return Math.max(
++    this.center.lastT(),
++    this.up.lastT(),
++    this.right.lastT(),
++    this.radius.lastT(),
++    this.angle.lastT())
++}
+ 
+-    return {
+-      type: "MultiPolygon",
+-      arcs: components.map(function(polygons) {
+-        var arcs = [], n;
+-
+-        // Extract the exterior (unique) arcs.
+-        polygons.forEach(function(polygon) {
+-          polygon.forEach(function(ring$$) {
+-            ring$$.forEach(function(arc) {
+-              if (polygonsByArc[arc < 0 ? ~arc : arc].length < 2) {
+-                arcs.push(arc);
+-              }
+-            });
+-          });
+-        });
++proto.idle = function(t) {
++  this.center.idle(t)
++  this.up.idle(t)
++  this.right.idle(t)
++  this.radius.idle(t)
++  this.angle.idle(t)
++}
+ 
+-        // Stitch the arcs into one or more rings.
+-        arcs = stitchArcs(topology, arcs);
+-
+-        // If more than one ring is returned,
+-        // at most one of these rings can be the exterior;
+-        // this exterior ring has the same winding order
+-        // as any exterior ring in the original polygons.
+-        if ((n = arcs.length) > 1) {
+-          var sgn = exterior(polygons[0][0]);
+-          for (var i = 0, t; i < n; ++i) {
+-            if (sgn === exterior(arcs[i])) {
+-              t = arcs[0], arcs[0] = arcs[i], arcs[i] = t;
+-              break;
+-            }
+-          }
+-        }
++proto.flush = function(t) {
++  this.center.flush(t)
++  this.up.flush(t)
++  this.right.flush(t)
++  this.radius.flush(t)
++  this.angle.flush(t)
++}
+ 
+-        return arcs;
+-      })
+-    };
++proto.setDistance = function(t, d) {
++  if(d > 0) {
++    this.radius.set(t, Math.log(d))
+   }
++}
+ 
+-  function neighbors(objects) {
+-    var indexesByArc = {}, // arc index -> array of object indexes
+-        neighbors = objects.map(function() { return []; });
+-
+-    function line(arcs, i) {
+-      arcs.forEach(function(a) {
+-        if (a < 0) a = ~a;
+-        var o = indexesByArc[a];
+-        if (o) o.push(i);
+-        else indexesByArc[a] = [i];
+-      });
+-    }
+-
+-    function polygon(arcs, i) {
+-      arcs.forEach(function(arc) { line(arc, i); });
+-    }
+-
+-    function geometry(o, i) {
+-      if (o.type === "GeometryCollection") o.geometries.forEach(function(o) { geometry(o, i); });
+-      else if (o.type in geometryType) geometryType[o.type](o.arcs, i);
+-    }
+-
+-    var geometryType = {
+-      LineString: line,
+-      MultiLineString: polygon,
+-      Polygon: polygon,
+-      MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); }
+-    };
+-
+-    objects.forEach(geometry);
++proto.lookAt = function(t, eye, center, up) {
++  this.recalcMatrix(t)
+ 
+-    for (var i in indexesByArc) {
+-      for (var indexes = indexesByArc[i], m = indexes.length, j = 0; j < m; ++j) {
+-        for (var k = j + 1; k < m; ++k) {
+-          var ij = indexes[j], ik = indexes[k], n;
+-          if ((n = neighbors[ij])[i = bisect(n, ik)] !== ik) n.splice(i, 0, ik);
+-          if ((n = neighbors[ik])[i = bisect(n, ij)] !== ij) n.splice(i, 0, ij);
+-        }
+-      }
+-    }
++  eye    = eye    || this.computedEye
++  center = center || this.computedCenter
++  up     = up     || this.computedUp
+ 
+-    return neighbors;
++  var ux = up[0]
++  var uy = up[1]
++  var uz = up[2]
++  var ul = len3(ux, uy, uz)
++  if(ul < 1e-6) {
++    return
+   }
++  ux /= ul
++  uy /= ul
++  uz /= ul
+ 
+-  function compareArea(a, b) {
+-    return a[1][2] - b[1][2];
++  var tx = eye[0] - center[0]
++  var ty = eye[1] - center[1]
++  var tz = eye[2] - center[2]
++  var tl = len3(tx, ty, tz)
++  if(tl < 1e-6) {
++    return
+   }
++  tx /= tl
++  ty /= tl
++  tz /= tl
+ 
+-  function minAreaHeap() {
+-    var heap = {},
+-        array = [],
+-        size = 0;
+-
+-    heap.push = function(object) {
+-      up(array[object._ = size] = object, size++);
+-      return size;
+-    };
+-
+-    heap.pop = function() {
+-      if (size <= 0) return;
+-      var removed = array[0], object;
+-      if (--size > 0) object = array[size], down(array[object._ = 0] = object, 0);
+-      return removed;
+-    };
+-
+-    heap.remove = function(removed) {
+-      var i = removed._, object;
+-      if (array[i] !== removed) return; // invalid request
+-      if (i !== --size) object = array[size], (compareArea(object, removed) < 0 ? up : down)(array[object._ = i] = object, i);
+-      return i;
+-    };
+-
+-    function up(object, i) {
+-      while (i > 0) {
+-        var j = ((i + 1) >> 1) - 1,
+-            parent = array[j];
+-        if (compareArea(object, parent) >= 0) break;
+-        array[parent._ = i] = parent;
+-        array[object._ = i = j] = object;
+-      }
+-    }
++  var right = this.computedRight
++  var rx = right[0]
++  var ry = right[1]
++  var rz = right[2]
++  var ru = ux*rx + uy*ry + uz*rz
++  rx -= ru * ux
++  ry -= ru * uy
++  rz -= ru * uz
++  var rl = len3(rx, ry, rz)
+ 
+-    function down(object, i) {
+-      while (true) {
+-        var r = (i + 1) << 1,
+-            l = r - 1,
+-            j = i,
+-            child = array[j];
+-        if (l < size && compareArea(array[l], child) < 0) child = array[j = l];
+-        if (r < size && compareArea(array[r], child) < 0) child = array[j = r];
+-        if (j === i) break;
+-        array[child._ = i] = child;
+-        array[object._ = i = j] = object;
+-      }
++  if(rl < 0.01) {
++    rx = uy * tz - uz * ty
++    ry = uz * tx - ux * tz
++    rz = ux * ty - uy * tx
++    rl = len3(rx, ry, rz)
++    if(rl < 1e-6) {
++      return
+     }
+-
+-    return heap;
+   }
++  rx /= rl
++  ry /= rl
++  rz /= rl
+ 
+-  function presimplify(topology, triangleArea) {
+-    var absolute$$ = absolute(topology.transform),
+-        relative$$ = relative(topology.transform),
+-        heap = minAreaHeap();
++  this.up.set(t, ux, uy, uz)
++  this.right.set(t, rx, ry, rz)
++  this.center.set(t, center[0], center[1], center[2])
++  this.radius.set(t, Math.log(tl))
+ 
+-    if (!triangleArea) triangleArea = triangle;
++  var fx = uy * rz - uz * ry
++  var fy = uz * rx - ux * rz
++  var fz = ux * ry - uy * rx
++  var fl = len3(fx, fy, fz)
++  fx /= fl
++  fy /= fl
++  fz /= fl
+ 
+-    topology.arcs.forEach(function(arc) {
+-      var triangles = [],
+-          maxArea = 0,
+-          triangle,
+-          i,
+-          n,
+-          p;
++  var tu = ux*tx + uy*ty + uz*tz
++  var tr = rx*tx + ry*ty + rz*tz
++  var tf = fx*tx + fy*ty + fz*tz
+ 
+-      // To store each point’s effective area, we create a new array rather than
+-      // extending the passed-in point to workaround a Chrome/V8 bug (getting
+-      // stuck in smi mode). For midpoints, the initial effective area of
+-      // Infinity will be computed in the next step.
+-      for (i = 0, n = arc.length; i < n; ++i) {
+-        p = arc[i];
+-        absolute$$(arc[i] = [p[0], p[1], Infinity], i);
+-      }
++  var phi   = Math.asin(clamp1(tu))
++  var theta = Math.atan2(tf, tr)
+ 
+-      for (i = 1, n = arc.length - 1; i < n; ++i) {
+-        triangle = arc.slice(i - 1, i + 2);
+-        triangle[1][2] = triangleArea(triangle);
+-        triangles.push(triangle);
+-        heap.push(triangle);
+-      }
++  var angleState = this.angle._state
++  var lastTheta  = angleState[angleState.length-1]
++  var lastPhi    = angleState[angleState.length-2]
++  lastTheta      = lastTheta % (2.0 * Math.PI)
++  var dp = Math.abs(lastTheta + 2.0 * Math.PI - theta)
++  var d0 = Math.abs(lastTheta - theta)
++  var dn = Math.abs(lastTheta - 2.0 * Math.PI - theta)
++  if(dp < d0) {
++    lastTheta += 2.0 * Math.PI
++  }
++  if(dn < d0) {
++    lastTheta -= 2.0 * Math.PI
++  }
+ 
+-      for (i = 0, n = triangles.length; i < n; ++i) {
+-        triangle = triangles[i];
+-        triangle.previous = triangles[i - 1];
+-        triangle.next = triangles[i + 1];
+-      }
++  this.angle.jump(this.angle.lastT(), lastTheta, lastPhi)
++  this.angle.set(t, theta, phi)
++}
+ 
+-      while (triangle = heap.pop()) {
+-        var previous = triangle.previous,
+-            next = triangle.next;
++function createTurntableController(options) {
++  options = options || {}
+ 
+-        // If the area of the current point is less than that of the previous point
+-        // to be eliminated, use the latter's area instead. This ensures that the
+-        // current point cannot be eliminated without eliminating previously-
+-        // eliminated points.
+-        if (triangle[1][2] < maxArea) triangle[1][2] = maxArea;
+-        else maxArea = triangle[1][2];
++  var center = options.center || [0,0,0]
++  var up     = options.up     || [0,1,0]
++  var right  = options.right  || findOrthoPair(up)
++  var radius = options.radius || 1.0
++  var theta  = options.theta  || 0.0
++  var phi    = options.phi    || 0.0
+ 
+-        if (previous) {
+-          previous.next = next;
+-          previous[2] = triangle[2];
+-          update(previous);
+-        }
++  center = [].slice.call(center, 0, 3)
+ 
+-        if (next) {
+-          next.previous = previous;
+-          next[0] = triangle[0];
+-          update(next);
+-        }
+-      }
++  up = [].slice.call(up, 0, 3)
++  normalize3(up, up)
+ 
+-      arc.forEach(relative$$);
+-    });
++  right = [].slice.call(right, 0, 3)
++  normalize3(right, right)
+ 
+-    function update(triangle) {
+-      heap.remove(triangle);
+-      triangle[1][2] = triangleArea(triangle);
+-      heap.push(triangle);
++  if('eye' in options) {
++    var eye = options.eye
++    var toward = [
++      eye[0]-center[0],
++      eye[1]-center[1],
++      eye[2]-center[2]
++    ]
++    cross(right, toward, up)
++    if(len3(right[0], right[1], right[2]) < 1e-6) {
++      right = findOrthoPair(up)
++    } else {
++      normalize3(right, right)
+     }
+ 
+-    return topology;
+-  }
++    radius = len3(toward[0], toward[1], toward[2])
+ 
+-  var version = "1.6.24";
++    var ut = dot3(up, toward) / radius
++    var rt = dot3(right, toward) / radius
++    phi    = Math.acos(ut)
++    theta  = Math.acos(rt)
++  }
+ 
+-  exports.version = version;
+-  exports.mesh = mesh;
+-  exports.meshArcs = meshArcs;
+-  exports.merge = merge;
+-  exports.mergeArcs = mergeArcs;
+-  exports.feature = feature;
+-  exports.neighbors = neighbors;
+-  exports.presimplify = presimplify;
++  //Use logarithmic coordinates for radius
++  radius = Math.log(radius)
+ 
+-}));
+-},{}],456:[function(require,module,exports){
++  //Return the controller
++  return new TurntableController(
++    options.zoomMin,
++    options.zoomMax,
++    center,
++    up,
++    right,
++    radius,
++    theta,
++    phi)
++}
++},{"filtered-vector":100,"gl-mat4/invert":142,"gl-mat4/rotate":146,"gl-vec3/cross":207,"gl-vec3/dot":208,"gl-vec3/normalize":211}],447:[function(require,module,exports){
+ "use strict"
+ 
+ module.exports = twoProduct
+@@ -77753,7 +79868,7 @@ function twoProduct(a, b, result) {
+ 
+   return [ y, x ]
+ }
+-},{}],457:[function(require,module,exports){
++},{}],448:[function(require,module,exports){
+ "use strict"
+ 
+ module.exports = fastTwoSum
+@@ -77771,7 +79886,7 @@ function fastTwoSum(a, b, result) {
+ 	}
+ 	return [ar+br, x]
+ }
+-},{}],458:[function(require,module,exports){
++},{}],449:[function(require,module,exports){
+ (function (global,Buffer){
+ 'use strict'
+ 
+@@ -77988,7 +80103,70 @@ exports.clearCache = function clearCache() {
+   }
+ }
+ }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
+-},{"bit-twiddle":51,"buffer":53,"dup":121}],459:[function(require,module,exports){
++},{"bit-twiddle":49,"buffer":59,"dup":93}],450:[function(require,module,exports){
++"use strict"; "use restrict";
++
++module.exports = UnionFind;
++
++function UnionFind(count) {
++  this.roots = new Array(count);
++  this.ranks = new Array(count);
++  
++  for(var i=0; i<count; ++i) {
++    this.roots[i] = i;
++    this.ranks[i] = 0;
++  }
++}
++
++var proto = UnionFind.prototype
++
++Object.defineProperty(proto, "length", {
++  "get": function() {
++    return this.roots.length
++  }
++})
++
++proto.makeSet = function() {
++  var n = this.roots.length;
++  this.roots.push(n);
++  this.ranks.push(0);
++  return n;
++}
++
++proto.find = function(x) {
++  var x0 = x
++  var roots = this.roots;
++  while(roots[x] !== x) {
++    x = roots[x]
++  }
++  while(roots[x0] !== x) {
++    var y = roots[x0]
++    roots[x0] = x
++    x0 = y
++  }
++  return x;
++}
++
++proto.link = function(x, y) {
++  var xr = this.find(x)
++    , yr = this.find(y);
++  if(xr === yr) {
++    return;
++  }
++  var ranks = this.ranks
++    , roots = this.roots
++    , xd    = ranks[xr]
++    , yd    = ranks[yr];
++  if(xd < yd) {
++    roots[xr] = yr;
++  } else if(yd < xd) {
++    roots[yr] = xr;
++  } else {
++    roots[yr] = xr;
++    ++ranks[xr];
++  }
++}
++},{}],451:[function(require,module,exports){
+ "use strict"
+ 
+ function unique_pred(list, compare) {
+@@ -78016,2999 +80194,2561 @@ function unique_eq(list) {
+     , a=list[0], b = list[0]
+   for(var i=1; i<len; ++i, b=a) {
+     b = a
+-    a = list[i]
+-    if(a !== b) {
+-      if(i === ptr) {
+-        ptr++
+-        continue
+-      }
+-      list[ptr++] = a
+-    }
+-  }
+-  list.length = ptr
+-  return list
+-}
+-
+-function unique(list, compare, sorted) {
+-  if(list.length === 0) {
+-    return list
+-  }
+-  if(compare) {
+-    if(!sorted) {
+-      list.sort(compare)
+-    }
+-    return unique_pred(list, compare)
+-  }
+-  if(!sorted) {
+-    list.sort()
+-  }
+-  return unique_eq(list)
+-}
+-
+-module.exports = unique
+-
+-},{}],460:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = createText
+-
+-var vectorizeText = require("./lib/vtext")
+-var defaultCanvas = null
+-var defaultContext = null
+-
+-if(typeof document !== 'undefined') {
+-  defaultCanvas = document.createElement('canvas')
+-  defaultCanvas.width = 8192
+-  defaultCanvas.height = 1024
+-  defaultContext = defaultCanvas.getContext("2d")
+-}
+-
+-function createText(str, options) {
+-  if((typeof options !== "object") || (options === null)) {
+-    options = {}
+-  }
+-  return vectorizeText(
+-    str,
+-    options.canvas || defaultCanvas,
+-    options.context || defaultContext,
+-    options)
+-}
+-
+-},{"./lib/vtext":461}],461:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = vectorizeText
+-module.exports.processPixels = processPixels
+-
+-var surfaceNets = require('surface-nets')
+-var ndarray = require('ndarray')
+-var simplify = require('simplify-planar-graph')
+-var cleanPSLG = require('clean-pslg')
+-var cdt2d = require('cdt2d')
+-var toPolygonCrappy = require('planar-graph-to-polyline')
+-
+-function transformPositions(positions, options, size) {
+-  var align = options.textAlign || "start"
+-  var baseline = options.textBaseline || "alphabetic"
+-
+-  var lo = [1<<30, 1<<30]
+-  var hi = [0,0]
+-  var n = positions.length
+-  for(var i=0; i<n; ++i) {
+-    var p = positions[i]
+-    for(var j=0; j<2; ++j) {
+-      lo[j] = Math.min(lo[j], p[j])|0
+-      hi[j] = Math.max(hi[j], p[j])|0
+-    }
+-  }
+-
+-  var xShift = 0
+-  switch(align) {
+-    case "center":
+-      xShift = -0.5 * (lo[0] + hi[0])
+-    break
+-
+-    case "right":
+-    case "end":
+-      xShift = -hi[0]
+-    break
+-
+-    case "left":
+-    case "start":
+-      xShift = -lo[0]
+-    break
+-
+-    default:
+-      throw new Error("vectorize-text: Unrecognized textAlign: '" + align + "'")
+-  }
+-
+-  var yShift = 0
+-  switch(baseline) {
+-    case "hanging":
+-    case "top":
+-      yShift = -lo[1]
+-    break
+-
+-    case "middle":
+-      yShift = -0.5 * (lo[1] + hi[1])
+-    break
+-
+-    case "alphabetic":
+-    case "ideographic":
+-      yShift = -3 * size
+-    break
+-
+-    case "bottom":
+-      yShift = -hi[1]
+-    break
+-
+-    default:
+-      throw new Error("vectorize-text: Unrecoginized textBaseline: '" + baseline + "'")
+-  }
+-
+-  var scale = 1.0 / size
+-  if("lineHeight" in options) {
+-    scale *= +options.lineHeight
+-  } else if("width" in options) {
+-    scale = options.width / (hi[0] - lo[0])
+-  } else if("height" in options) {
+-    scale = options.height / (hi[1] - lo[1])
+-  }
+-
+-  return positions.map(function(p) {
+-    return [ scale * (p[0] + xShift), scale * (p[1] + yShift) ]
+-  })
+-}
+-
+-function getPixels(canvas, context, str, size) {
+-  var width = Math.ceil(context.measureText(str).width + 2*size)|0
+-  if(width > 8192) {
+-    throw new Error("vectorize-text: String too long (sorry, this will get fixed later)")
+-  }
+-  var height = 3 * size
+-  if(canvas.height < height) {
+-    canvas.height = height
+-  }
+-
+-  context.fillStyle = "#000"
+-  context.fillRect(0, 0, canvas.width, canvas.height)
+-
+-  context.fillStyle = "#fff"
+-  context.fillText(str, size, 2*size)
+-
+-  //Cut pixels from image
+-  var pixelData = context.getImageData(0, 0, width, height)
+-  var pixels = ndarray(pixelData.data, [height, width, 4])
+-
+-  return pixels.pick(-1,-1,0).transpose(1,0)
+-}
+-
+-function getContour(pixels, doSimplify) {
+-  var contour = surfaceNets(pixels, 128)
+-  if(doSimplify) {
+-    return simplify(contour.cells, contour.positions, 0.25)
+-  }
+-  return {
+-    edges: contour.cells,
+-    positions: contour.positions
+-  }
+-}
+-
+-function processPixelsImpl(pixels, options, size, simplify) {
+-  //Extract contour
+-  var contour = getContour(pixels, simplify)
+-
+-  //Apply warp to positions
+-  var positions = transformPositions(contour.positions, options, size)
+-  var edges     = contour.edges
+-  var flip = "ccw" === options.orientation
+-
+-  //Clean up the PSLG, resolve self intersections, etc.
+-  cleanPSLG(positions, edges)
+-
+-  //If triangulate flag passed, triangulate the result
+-  if(options.polygons || options.polygon || options.polyline) {
+-    var result = toPolygonCrappy(edges, positions)
+-    var nresult = new Array(result.length)
+-    for(var i=0; i<result.length; ++i) {
+-      var loops = result[i]
+-      var nloops = new Array(loops.length)
+-      for(var j=0; j<loops.length; ++j) {
+-        var loop = loops[j]
+-        var nloop = new Array(loop.length)
+-        for(var k=0; k<loop.length; ++k) {
+-          nloop[k] = positions[loop[k]].slice()
+-        }
+-        if(flip) {
+-          nloop.reverse()
+-        }
+-        nloops[j] = nloop
+-      }
+-      nresult[i] = nloops
+-    }
+-    return nresult
+-  } else if(options.triangles || options.triangulate || options.triangle) {
+-    return {
+-      cells: cdt2d(positions, edges, {
+-        delaunay: false,
+-        exterior: false,
+-        interior: true
+-      }),
+-      positions: positions
+-    }
+-  } else {
+-    return {
+-      edges:     edges,
+-      positions: positions
++    a = list[i]
++    if(a !== b) {
++      if(i === ptr) {
++        ptr++
++        continue
++      }
++      list[ptr++] = a
+     }
+   }
++  list.length = ptr
++  return list
+ }
+ 
+-function processPixels(pixels, options, size) {
+-  try {
+-    return processPixelsImpl(pixels, options, size, true)
+-  } catch(e) {}
+-  try {
+-    return processPixelsImpl(pixels, options, size, false)
+-  } catch(e) {}
+-  if(options.polygons || options.polyline || options.polygon) {
+-    return []
++function unique(list, compare, sorted) {
++  if(list.length === 0) {
++    return list
+   }
+-  if(options.triangles || options.triangulate || options.triangle) {
+-    return {
+-      cells: [],
+-      positions: []
++  if(compare) {
++    if(!sorted) {
++      list.sort(compare)
+     }
++    return unique_pred(list, compare)
+   }
+-  return {
+-    edges: [],
+-    positions: []
++  if(!sorted) {
++    list.sort()
+   }
++  return unique_eq(list)
+ }
+ 
+-function vectorizeText(str, canvas, context, options) {
+-  var size = options.size || 64
+-  var family = options.font || "normal"
++module.exports = unique
+ 
+-  context.font = size + "px " + family
+-  context.textAlign = "start"
+-  context.textBaseline = "alphabetic"
+-  context.direction = "ltr"
++},{}],452:[function(require,module,exports){
++/*
++ * Copyright (C) 2008 Apple Inc. All Rights Reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions and the following disclaimer.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ *
++ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
++ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
++ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
++ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ *
++ * Ported from Webkit
++ * http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/UnitBezier.h
++ */
+ 
+-  var pixels = getPixels(canvas, context, str, size)
++module.exports = UnitBezier;
+ 
+-  return processPixels(pixels, options, size)
+-}
++function UnitBezier(p1x, p1y, p2x, p2y) {
++    // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).
++    this.cx = 3.0 * p1x;
++    this.bx = 3.0 * (p2x - p1x) - this.cx;
++    this.ax = 1.0 - this.cx - this.bx;
+ 
+-},{"cdt2d":63,"clean-pslg":70,"ndarray":433,"planar-graph-to-polyline":474,"simplify-planar-graph":478,"surface-nets":452}],462:[function(require,module,exports){
+-'use strict'
++    this.cy = 3.0 * p1y;
++    this.by = 3.0 * (p2y - p1y) - this.cy;
++    this.ay = 1.0 - this.cy - this.by;
+ 
+-module.exports = trimLeaves
++    this.p1x = p1x;
++    this.p1y = p2y;
++    this.p2x = p2x;
++    this.p2y = p2y;
++}
+ 
+-var e2a = require('edges-to-adjacency-list')
++UnitBezier.prototype.sampleCurveX = function(t) {
++    // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.
++    return ((this.ax * t + this.bx) * t + this.cx) * t;
++};
+ 
+-function trimLeaves(edges, positions) {
+-  var adj = e2a(edges, positions.length)
+-  var live = new Array(positions.length)
+-  var nbhd = new Array(positions.length)
++UnitBezier.prototype.sampleCurveY = function(t) {
++    return ((this.ay * t + this.by) * t + this.cy) * t;
++};
+ 
+-  var dead = []
+-  for(var i=0; i<positions.length; ++i) {
+-    var count = adj[i].length
+-    nbhd[i] = count
+-    live[i] = true
+-    if(count <= 1) {
+-      dead.push(i)
+-    }
+-  }
++UnitBezier.prototype.sampleCurveDerivativeX = function(t) {
++    return (3.0 * this.ax * t + 2.0 * this.bx) * t + this.cx;
++};
+ 
+-  while(dead.length > 0) {
+-    var v = dead.pop()
+-    live[v] = false
+-    var n = adj[v]
+-    for(var i=0; i<n.length; ++i) {
+-      var u = n[i]
+-      if(--nbhd[u] === 0) {
+-        dead.push(u)
+-      }
+-    }
+-  }
++UnitBezier.prototype.solveCurveX = function(x, epsilon) {
++    if (typeof epsilon === 'undefined') epsilon = 1e-6;
+ 
+-  var newIndex = new Array(positions.length)
+-  var npositions = []
+-  for(var i=0; i<positions.length; ++i) {
+-    if(live[i]) {
+-      var v = npositions.length
+-      newIndex[i] = v
+-      npositions.push(positions[i])
+-    } else {
+-      newIndex[i] = -1
+-    }
+-  }
++    var t0, t1, t2, x2, i;
+ 
+-  var nedges = []
+-  for(var i=0; i<edges.length; ++i) {
+-    var e = edges[i]
+-    if(live[e[0]] && live[e[1]]) {
+-      nedges.push([ newIndex[e[0]], newIndex[e[1]] ])
+-    }
+-  }
+-  
+-  return [ nedges, npositions ]
+-}
+-},{"edges-to-adjacency-list":463}],463:[function(require,module,exports){
+-"use strict"
++    // First try a few iterations of Newton's method -- normally very fast.
++    for (t2 = x, i = 0; i < 8; i++) {
+ 
+-module.exports = edgeToAdjacency
++        x2 = this.sampleCurveX(t2) - x;
++        if (Math.abs(x2) < epsilon) return t2;
+ 
+-var uniq = require("uniq")
++        var d2 = this.sampleCurveDerivativeX(t2);
++        if (Math.abs(d2) < 1e-6) break;
+ 
+-function edgeToAdjacency(edges, numVertices) {
+-  var numEdges = edges.length
+-  if(typeof numVertices !== "number") {
+-    numVertices = 0
+-    for(var i=0; i<numEdges; ++i) {
+-      var e = edges[i]
+-      numVertices = Math.max(numVertices, e[0], e[1])
++        t2 = t2 - x2 / d2;
+     }
+-    numVertices = (numVertices|0) + 1
+-  }
+-  numVertices = numVertices|0
+-  var adj = new Array(numVertices)
+-  for(var i=0; i<numVertices; ++i) {
+-    adj[i] = []
+-  }
+-  for(var i=0; i<numEdges; ++i) {
+-    var e = edges[i]
+-    adj[e[0]].push(e[1])
+-    adj[e[1]].push(e[0])
+-  }
+-  for(var j=0; j<numVertices; ++j) {
+-    uniq(adj[j], function(a, b) {
+-      return a - b
+-    })
+-  }
+-  return adj
+-}
+-},{"uniq":459}],464:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = planarDual
++    // Fall back to the bisection method for reliability.
++    t0 = 0.0;
++    t1 = 1.0;
++    t2 = x;
+ 
+-var compareAngle = require("compare-angle")
++    if (t2 < t0) return t0;
++    if (t2 > t1) return t1;
+ 
+-function planarDual(cells, positions) {
++    while (t0 < t1) {
+ 
+-  var numVertices = positions.length|0
+-  var numEdges = cells.length
+-  var adj = [new Array(numVertices), new Array(numVertices)]
+-  for(var i=0; i<numVertices; ++i) {
+-    adj[0][i] = []
+-    adj[1][i] = []
+-  }
+-  for(var i=0; i<numEdges; ++i) {
+-    var c = cells[i]
+-    adj[0][c[0]].push(c)
+-    adj[1][c[1]].push(c)
+-  }
++        x2 = this.sampleCurveX(t2);
++        if (Math.abs(x2 - x) < epsilon) return t2;
+ 
+-  var cycles = []
++        if (x > x2) {
++            t0 = t2;
++        } else {
++            t1 = t2;
++        }
+ 
+-  //Add isolated vertices as trivial case
+-  for(var i=0; i<numVertices; ++i) {
+-    if(adj[0][i].length + adj[1][i].length === 0) {
+-      cycles.push( [i] )
++        t2 = (t1 - t0) * 0.5 + t0;
+     }
+-  }
+ 
+-  //Remove a half edge
+-  function cut(c, i) {
+-    var a = adj[i][c[i]]
+-    a.splice(a.indexOf(c), 1)
+-  }
++    // Failure.
++    return t2;
++};
+ 
+-  //Find next vertex and cut edge
+-  function next(a, b, noCut) {
+-    var nextCell, nextVertex, nextDir
+-    for(var i=0; i<2; ++i) {
+-      if(adj[i][b].length > 0) {
+-        nextCell = adj[i][b][0]
+-        nextDir = i
+-        break
++UnitBezier.prototype.solve = function(x, epsilon) {
++    return this.sampleCurveY(this.solveCurveX(x, epsilon));
++};
++
++},{}],453:[function(require,module,exports){
++if (typeof Object.create === 'function') {
++  // implementation from standard node.js 'util' module
++  module.exports = function inherits(ctor, superCtor) {
++    ctor.super_ = superCtor
++    ctor.prototype = Object.create(superCtor.prototype, {
++      constructor: {
++        value: ctor,
++        enumerable: false,
++        writable: true,
++        configurable: true
+       }
++    });
++  };
++} else {
++  // old school shim for old browsers
++  module.exports = function inherits(ctor, superCtor) {
++    ctor.super_ = superCtor
++    var TempCtor = function () {}
++    TempCtor.prototype = superCtor.prototype
++    ctor.prototype = new TempCtor()
++    ctor.prototype.constructor = ctor
++  }
++}
++
++},{}],454:[function(require,module,exports){
++module.exports = function isBuffer(arg) {
++  return arg && typeof arg === 'object'
++    && typeof arg.copy === 'function'
++    && typeof arg.fill === 'function'
++    && typeof arg.readUInt8 === 'function';
++}
++},{}],455:[function(require,module,exports){
++(function (process,global){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
++
++var formatRegExp = /%[sdj%]/g;
++exports.format = function(f) {
++  if (!isString(f)) {
++    var objects = [];
++    for (var i = 0; i < arguments.length; i++) {
++      objects.push(inspect(arguments[i]));
+     }
+-    nextVertex = nextCell[nextDir^1]
++    return objects.join(' ');
++  }
+ 
+-    for(var dir=0; dir<2; ++dir) {
+-      var nbhd = adj[dir][b]
+-      for(var k=0; k<nbhd.length; ++k) {
+-        var e = nbhd[k]
+-        var p = e[dir^1]
+-        var cmp = compareAngle(
+-            positions[a], 
+-            positions[b], 
+-            positions[nextVertex],
+-            positions[p])
+-        if(cmp > 0) {
+-          nextCell = e
+-          nextVertex = p
+-          nextDir = dir
++  var i = 1;
++  var args = arguments;
++  var len = args.length;
++  var str = String(f).replace(formatRegExp, function(x) {
++    if (x === '%%') return '%';
++    if (i >= len) return x;
++    switch (x) {
++      case '%s': return String(args[i++]);
++      case '%d': return Number(args[i++]);
++      case '%j':
++        try {
++          return JSON.stringify(args[i++]);
++        } catch (_) {
++          return '[Circular]';
+         }
+-      }
+-    }
+-    if(noCut) {
+-      return nextVertex
++      default:
++        return x;
+     }
+-    if(nextCell) {
+-      cut(nextCell, nextDir)
++  });
++  for (var x = args[i]; i < len; x = args[++i]) {
++    if (isNull(x) || !isObject(x)) {
++      str += ' ' + x;
++    } else {
++      str += ' ' + inspect(x);
+     }
+-    return nextVertex
+   }
++  return str;
++};
+ 
+-  function extractCycle(v, dir) {
+-    var e0 = adj[dir][v][0]
+-    var cycle = [v]
+-    cut(e0, dir)
+-    var u = e0[dir^1]
+-    var d0 = dir
+-    while(true) {
+-      while(u !== v) {
+-        cycle.push(u)
+-        u = next(cycle[cycle.length-2], u, false)
+-      }
+-      if(adj[0][v].length + adj[1][v].length === 0) {
+-        break
+-      }
+-      var a = cycle[cycle.length-1]
+-      var b = v
+-      var c = cycle[1]
+-      var d = next(a, b, true)
+-      if(compareAngle(positions[a], positions[b], positions[c], positions[d]) < 0) {
+-        break
+-      }
+-      cycle.push(v)
+-      u = next(a, b)
+-    }
+-    return cycle
++
++// Mark that a method should not be used.
++// Returns a modified function which warns once by default.
++// If --no-deprecation is set, then it is a no-op.
++exports.deprecate = function(fn, msg) {
++  // Allow for deprecating things in the process of starting up.
++  if (isUndefined(global.process)) {
++    return function() {
++      return exports.deprecate(fn, msg).apply(this, arguments);
++    };
+   }
+ 
+-  function shouldGlue(pcycle, ncycle) {
+-    return (ncycle[1] === ncycle[ncycle.length-1])
++  if (process.noDeprecation === true) {
++    return fn;
+   }
+ 
+-  for(var i=0; i<numVertices; ++i) {
+-    for(var j=0; j<2; ++j) {
+-      var pcycle = []
+-      while(adj[j][i].length > 0) {
+-        var ni = adj[0][i].length
+-        var ncycle = extractCycle(i,j)
+-        if(shouldGlue(pcycle, ncycle)) {
+-          //Glue together trivial cycles
+-          pcycle.push.apply(pcycle, ncycle)
+-        } else {
+-          if(pcycle.length > 0) {
+-            cycles.push(pcycle)
+-          }
+-          pcycle = ncycle
+-        }
+-      }
+-      if(pcycle.length > 0) {
+-        cycles.push(pcycle)
++  var warned = false;
++  function deprecated() {
++    if (!warned) {
++      if (process.throwDeprecation) {
++        throw new Error(msg);
++      } else if (process.traceDeprecation) {
++        console.trace(msg);
++      } else {
++        console.error(msg);
+       }
++      warned = true;
++    }
++    return fn.apply(this, arguments);
++  }
++
++  return deprecated;
++};
++
++
++var debugs = {};
++var debugEnviron;
++exports.debuglog = function(set) {
++  if (isUndefined(debugEnviron))
++    debugEnviron = process.env.NODE_DEBUG || '';
++  set = set.toUpperCase();
++  if (!debugs[set]) {
++    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
++      var pid = process.pid;
++      debugs[set] = function() {
++        var msg = exports.format.apply(exports, arguments);
++        console.error('%s %d: %s', set, pid, msg);
++      };
++    } else {
++      debugs[set] = function() {};
+     }
+   }
+-
+-  //Combine paths and loops together
+-  return cycles
++  return debugs[set];
++};
++
++
++/**
++ * Echos the value of a value. Trys to print the value out
++ * in the best way possible given the different types.
++ *
++ * @param {Object} obj The object to print out.
++ * @param {Object} opts Optional options object that alters the output.
++ */
++/* legacy: obj, showHidden, depth, colors*/
++function inspect(obj, opts) {
++  // default options
++  var ctx = {
++    seen: [],
++    stylize: stylizeNoColor
++  };
++  // legacy...
++  if (arguments.length >= 3) ctx.depth = arguments[2];
++  if (arguments.length >= 4) ctx.colors = arguments[3];
++  if (isBoolean(opts)) {
++    // legacy...
++    ctx.showHidden = opts;
++  } else if (opts) {
++    // got an "options" object
++    exports._extend(ctx, opts);
++  }
++  // set default options
++  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
++  if (isUndefined(ctx.depth)) ctx.depth = 2;
++  if (isUndefined(ctx.colors)) ctx.colors = false;
++  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
++  if (ctx.colors) ctx.stylize = stylizeWithColor;
++  return formatValue(ctx, obj, ctx.depth);
++}
++exports.inspect = inspect;
++
++
++// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
++inspect.colors = {
++  'bold' : [1, 22],
++  'italic' : [3, 23],
++  'underline' : [4, 24],
++  'inverse' : [7, 27],
++  'white' : [37, 39],
++  'grey' : [90, 39],
++  'black' : [30, 39],
++  'blue' : [34, 39],
++  'cyan' : [36, 39],
++  'green' : [32, 39],
++  'magenta' : [35, 39],
++  'red' : [31, 39],
++  'yellow' : [33, 39]
++};
++
++// Don't use 'blue' not visible on cmd.exe
++inspect.styles = {
++  'special': 'cyan',
++  'number': 'yellow',
++  'boolean': 'yellow',
++  'undefined': 'grey',
++  'null': 'bold',
++  'string': 'green',
++  'date': 'magenta',
++  // "name": intentionally not styling
++  'regexp': 'red'
++};
++
++
++function stylizeWithColor(str, styleType) {
++  var style = inspect.styles[styleType];
++
++  if (style) {
++    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
++           '\u001b[' + inspect.colors[style][1] + 'm';
++  } else {
++    return str;
++  }
+ }
+-},{"compare-angle":465}],465:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = compareAngle
+ 
+-var orient = require("robust-orientation")
+-var sgn = require("signum")
+-var twoSum = require("two-sum")
+-var robustProduct = require("robust-product")
+-var robustSum = require("robust-sum")
++function stylizeNoColor(str, styleType) {
++  return str;
++}
+ 
+-function testInterior(a, b, c) {
+-  var x0 = twoSum(a[0], -b[0])
+-  var y0 = twoSum(a[1], -b[1])
+-  var x1 = twoSum(c[0], -b[0])
+-  var y1 = twoSum(c[1], -b[1])
+ 
+-  var d = robustSum(
+-    robustProduct(x0, x1),
+-    robustProduct(y0, y1))
++function arrayToHash(array) {
++  var hash = {};
+ 
+-  return d[d.length-1] >= 0
++  array.forEach(function(val, idx) {
++    hash[val] = true;
++  });
++
++  return hash;
+ }
+ 
+-function compareAngle(a, b, c, d) {
+-  var bcd = orient(b, c, d)
+-  if(bcd === 0) {
+-    //Handle degenerate cases
+-    var sabc = sgn(orient(a, b, c))
+-    var sabd = sgn(orient(a, b, d))
+-    if(sabc === sabd) {
+-      if(sabc === 0) {
+-        var ic = testInterior(a, b, c)
+-        var id = testInterior(a, b, d)
+-        if(ic === id) {
+-          return 0
+-        } else if(ic) {
+-          return 1
+-        } else {
+-          return -1
+-        }
+-      }
+-      return 0
+-    } else if(sabd === 0) {
+-      if(sabc > 0) {
+-        return -1
+-      } else if(testInterior(a, b, d)) {
+-        return -1
+-      } else {
+-        return 1
+-      }
+-    } else if(sabc === 0) {
+-      if(sabd > 0) {
+-        return 1
+-      } else if(testInterior(a, b, c)) {
+-        return 1
+-      } else {
+-        return -1
+-      }
++
++function formatValue(ctx, value, recurseTimes) {
++  // Provide a hook for user-specified inspect functions.
++  // Check that value is an object with an inspect function on it
++  if (ctx.customInspect &&
++      value &&
++      isFunction(value.inspect) &&
++      // Filter out the util module, it's inspect function is special
++      value.inspect !== exports.inspect &&
++      // Also filter out any prototype objects using the circular check.
++      !(value.constructor && value.constructor.prototype === value)) {
++    var ret = value.inspect(recurseTimes, ctx);
++    if (!isString(ret)) {
++      ret = formatValue(ctx, ret, recurseTimes);
+     }
+-    return sgn(sabd - sabc)
++    return ret;
+   }
+-  var abc = orient(a, b, c)
+-  if(abc > 0) {
+-    if(bcd > 0 && orient(a, b, d) > 0) {
+-      return 1
++
++  // Primitive types cannot have properties
++  var primitive = formatPrimitive(ctx, value);
++  if (primitive) {
++    return primitive;
++  }
++
++  // Look up the keys of the object.
++  var keys = Object.keys(value);
++  var visibleKeys = arrayToHash(keys);
++
++  if (ctx.showHidden) {
++    keys = Object.getOwnPropertyNames(value);
++  }
++
++  // IE doesn't make error fields non-enumerable
++  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
++  if (isError(value)
++      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
++    return formatError(value);
++  }
++
++  // Some type of object without properties can be shortcutted.
++  if (keys.length === 0) {
++    if (isFunction(value)) {
++      var name = value.name ? ': ' + value.name : '';
++      return ctx.stylize('[Function' + name + ']', 'special');
+     }
+-    return -1
+-  } else if(abc < 0) {
+-    if(bcd > 0 || orient(a, b, d) > 0) {
+-      return 1
++    if (isRegExp(value)) {
++      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
+     }
+-    return -1
+-  } else {
+-    var abd = orient(a, b, d)
+-    if(abd > 0) {
+-      return 1
+-    } else {
+-      if(testInterior(a, b, c)) {
+-        return 1
+-      } else {
+-        return -1
+-      }
++    if (isDate(value)) {
++      return ctx.stylize(Date.prototype.toString.call(value), 'date');
++    }
++    if (isError(value)) {
++      return formatError(value);
+     }
+   }
+-}
+-},{"robust-orientation":439,"robust-product":466,"robust-sum":442,"signum":467,"two-sum":457}],466:[function(require,module,exports){
+-"use strict"
+-
+-var robustSum = require("robust-sum")
+-var robustScale = require("robust-scale")
+ 
+-module.exports = robustProduct
++  var base = '', array = false, braces = ['{', '}'];
+ 
+-function robustProduct(a, b) {
+-  if(a.length === 1) {
+-    return robustScale(b, a[0])
+-  }
+-  if(b.length === 1) {
+-    return robustScale(a, b[0])
++  // Make Array say that they are Array
++  if (isArray(value)) {
++    array = true;
++    braces = ['[', ']'];
+   }
+-  if(a.length === 0 || b.length === 0) {
+-    return [0]
++
++  // Make functions say that they are functions
++  if (isFunction(value)) {
++    var n = value.name ? ': ' + value.name : '';
++    base = ' [Function' + n + ']';
+   }
+-  var r = [0]
+-  if(a.length < b.length) {
+-    for(var i=0; i<a.length; ++i) {
+-      r = robustSum(r, robustScale(b, a[i]))
+-    }
+-  } else {
+-    for(var i=0; i<b.length; ++i) {
+-      r = robustSum(r, robustScale(a, b[i]))
+-    }    
++
++  // Make RegExps say that they are RegExps
++  if (isRegExp(value)) {
++    base = ' ' + RegExp.prototype.toString.call(value);
+   }
+-  return r
+-}
+-},{"robust-scale":440,"robust-sum":442}],467:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = function signum(x) {
+-  if(x < 0) { return -1 }
+-  if(x > 0) { return 1 }
+-  return 0.0
+-}
+-},{}],468:[function(require,module,exports){
+-arguments[4][22][0].apply(exports,arguments)
+-},{"dup":22}],469:[function(require,module,exports){
+-"use strict"
++  // Make dates with properties first say the date
++  if (isDate(value)) {
++    base = ' ' + Date.prototype.toUTCString.call(value);
++  }
+ 
+-var bounds = require("binary-search-bounds")
++  // Make error with message first say the error
++  if (isError(value)) {
++    base = ' ' + formatError(value);
++  }
+ 
+-var NOT_FOUND = 0
+-var SUCCESS = 1
+-var EMPTY = 2
++  if (keys.length === 0 && (!array || value.length == 0)) {
++    return braces[0] + base + braces[1];
++  }
+ 
+-module.exports = createWrapper
++  if (recurseTimes < 0) {
++    if (isRegExp(value)) {
++      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
++    } else {
++      return ctx.stylize('[Object]', 'special');
++    }
++  }
+ 
+-function IntervalTreeNode(mid, left, right, leftPoints, rightPoints) {
+-  this.mid = mid
+-  this.left = left
+-  this.right = right
+-  this.leftPoints = leftPoints
+-  this.rightPoints = rightPoints
+-  this.count = (left ? left.count : 0) + (right ? right.count : 0) + leftPoints.length
+-}
++  ctx.seen.push(value);
+ 
+-var proto = IntervalTreeNode.prototype
++  var output;
++  if (array) {
++    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
++  } else {
++    output = keys.map(function(key) {
++      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
++    });
++  }
+ 
+-function copy(a, b) {
+-  a.mid = b.mid
+-  a.left = b.left
+-  a.right = b.right
+-  a.leftPoints = b.leftPoints
+-  a.rightPoints = b.rightPoints
+-  a.count = b.count
+-}
++  ctx.seen.pop();
+ 
+-function rebuild(node, intervals) {
+-  var ntree = createIntervalTree(intervals)
+-  node.mid = ntree.mid
+-  node.left = ntree.left
+-  node.right = ntree.right
+-  node.leftPoints = ntree.leftPoints
+-  node.rightPoints = ntree.rightPoints
+-  node.count = ntree.count
++  return reduceToSingleString(output, base, braces);
+ }
+ 
+-function rebuildWithInterval(node, interval) {
+-  var intervals = node.intervals([])
+-  intervals.push(interval)
+-  rebuild(node, intervals)    
+-}
+ 
+-function rebuildWithoutInterval(node, interval) {
+-  var intervals = node.intervals([])
+-  var idx = intervals.indexOf(interval)
+-  if(idx < 0) {
+-    return NOT_FOUND
++function formatPrimitive(ctx, value) {
++  if (isUndefined(value))
++    return ctx.stylize('undefined', 'undefined');
++  if (isString(value)) {
++    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
++                                             .replace(/'/g, "\\'")
++                                             .replace(/\\"/g, '"') + '\'';
++    return ctx.stylize(simple, 'string');
+   }
+-  intervals.splice(idx, 1)
+-  rebuild(node, intervals)
+-  return SUCCESS
++  if (isNumber(value))
++    return ctx.stylize('' + value, 'number');
++  if (isBoolean(value))
++    return ctx.stylize('' + value, 'boolean');
++  // For some reason typeof null is "object", so special case here.
++  if (isNull(value))
++    return ctx.stylize('null', 'null');
+ }
+ 
+-proto.intervals = function(result) {
+-  result.push.apply(result, this.leftPoints)
+-  if(this.left) {
+-    this.left.intervals(result)
+-  }
+-  if(this.right) {
+-    this.right.intervals(result)
+-  }
+-  return result
++
++function formatError(value) {
++  return '[' + Error.prototype.toString.call(value) + ']';
+ }
+ 
+-proto.insert = function(interval) {
+-  var weight = this.count - this.leftPoints.length
+-  this.count += 1
+-  if(interval[1] < this.mid) {
+-    if(this.left) {
+-      if(4*(this.left.count+1) > 3*(weight+1)) {
+-        rebuildWithInterval(this, interval)
+-      } else {
+-        this.left.insert(interval)
+-      }
+-    } else {
+-      this.left = createIntervalTree([interval])
+-    }
+-  } else if(interval[0] > this.mid) {
+-    if(this.right) {
+-      if(4*(this.right.count+1) > 3*(weight+1)) {
+-        rebuildWithInterval(this, interval)
+-      } else {
+-        this.right.insert(interval)
+-      }
++
++function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
++  var output = [];
++  for (var i = 0, l = value.length; i < l; ++i) {
++    if (hasOwnProperty(value, String(i))) {
++      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
++          String(i), true));
+     } else {
+-      this.right = createIntervalTree([interval])
++      output.push('');
+     }
+-  } else {
+-    var l = bounds.ge(this.leftPoints, interval, compareBegin)
+-    var r = bounds.ge(this.rightPoints, interval, compareEnd)
+-    this.leftPoints.splice(l, 0, interval)
+-    this.rightPoints.splice(r, 0, interval)
+   }
++  keys.forEach(function(key) {
++    if (!key.match(/^\d+$/)) {
++      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
++          key, true));
++    }
++  });
++  return output;
+ }
+ 
+-proto.remove = function(interval) {
+-  var weight = this.count - this.leftPoints
+-  if(interval[1] < this.mid) {
+-    if(!this.left) {
+-      return NOT_FOUND
+-    }
+-    var rw = this.right ? this.right.count : 0
+-    if(4 * rw > 3 * (weight-1)) {
+-      return rebuildWithoutInterval(this, interval)
+-    }
+-    var r = this.left.remove(interval)
+-    if(r === EMPTY) {
+-      this.left = null
+-      this.count -= 1
+-      return SUCCESS
+-    } else if(r === SUCCESS) {
+-      this.count -= 1
+-    }
+-    return r
+-  } else if(interval[0] > this.mid) {
+-    if(!this.right) {
+-      return NOT_FOUND
+-    }
+-    var lw = this.left ? this.left.count : 0
+-    if(4 * lw > 3 * (weight-1)) {
+-      return rebuildWithoutInterval(this, interval)
+-    }
+-    var r = this.right.remove(interval)
+-    if(r === EMPTY) {
+-      this.right = null
+-      this.count -= 1
+-      return SUCCESS
+-    } else if(r === SUCCESS) {
+-      this.count -= 1
++
++function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
++  var name, str, desc;
++  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
++  if (desc.get) {
++    if (desc.set) {
++      str = ctx.stylize('[Getter/Setter]', 'special');
++    } else {
++      str = ctx.stylize('[Getter]', 'special');
+     }
+-    return r
+   } else {
+-    if(this.count === 1) {
+-      if(this.leftPoints[0] === interval) {
+-        return EMPTY
+-      } else {
+-        return NOT_FOUND
+-      }
++    if (desc.set) {
++      str = ctx.stylize('[Setter]', 'special');
+     }
+-    if(this.leftPoints.length === 1 && this.leftPoints[0] === interval) {
+-      if(this.left && this.right) {
+-        var p = this
+-        var n = this.left
+-        while(n.right) {
+-          p = n
+-          n = n.right
+-        }
+-        if(p === this) {
+-          n.right = this.right
+-        } else {
+-          var l = this.left
+-          var r = this.right
+-          p.count -= n.count
+-          p.right = n.left
+-          n.left = l
+-          n.right = r
+-        }
+-        copy(this, n)
+-        this.count = (this.left?this.left.count:0) + (this.right?this.right.count:0) + this.leftPoints.length
+-      } else if(this.left) {
+-        copy(this, this.left)
++  }
++  if (!hasOwnProperty(visibleKeys, key)) {
++    name = '[' + key + ']';
++  }
++  if (!str) {
++    if (ctx.seen.indexOf(desc.value) < 0) {
++      if (isNull(recurseTimes)) {
++        str = formatValue(ctx, desc.value, null);
+       } else {
+-        copy(this, this.right)
+-      }
+-      return SUCCESS
+-    }
+-    for(var l = bounds.ge(this.leftPoints, interval, compareBegin); l<this.leftPoints.length; ++l) {
+-      if(this.leftPoints[l][0] !== interval[0]) {
+-        break
++        str = formatValue(ctx, desc.value, recurseTimes - 1);
+       }
+-      if(this.leftPoints[l] === interval) {
+-        this.count -= 1
+-        this.leftPoints.splice(l, 1)
+-        for(var r = bounds.ge(this.rightPoints, interval, compareEnd); r<this.rightPoints.length; ++r) {
+-          if(this.rightPoints[r][1] !== interval[1]) {
+-            break
+-          } else if(this.rightPoints[r] === interval) {
+-            this.rightPoints.splice(r, 1)
+-            return SUCCESS
+-          }
++      if (str.indexOf('\n') > -1) {
++        if (array) {
++          str = str.split('\n').map(function(line) {
++            return '  ' + line;
++          }).join('\n').substr(2);
++        } else {
++          str = '\n' + str.split('\n').map(function(line) {
++            return '   ' + line;
++          }).join('\n');
+         }
+       }
++    } else {
++      str = ctx.stylize('[Circular]', 'special');
+     }
+-    return NOT_FOUND
+   }
+-}
+-
+-function reportLeftRange(arr, hi, cb) {
+-  for(var i=0; i<arr.length && arr[i][0] <= hi; ++i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
++  if (isUndefined(name)) {
++    if (array && key.match(/^\d+$/)) {
++      return str;
++    }
++    name = JSON.stringify('' + key);
++    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
++      name = name.substr(1, name.length - 2);
++      name = ctx.stylize(name, 'name');
++    } else {
++      name = name.replace(/'/g, "\\'")
++                 .replace(/\\"/g, '"')
++                 .replace(/(^"|"$)/g, "'");
++      name = ctx.stylize(name, 'string');
++    }
+   }
+-}
+ 
+-function reportRightRange(arr, lo, cb) {
+-  for(var i=arr.length-1; i>=0 && arr[i][1] >= lo; --i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
+-  }
++  return name + ': ' + str;
+ }
+ 
+-function reportRange(arr, cb) {
+-  for(var i=0; i<arr.length; ++i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
+-  }
+-}
+ 
+-proto.queryPoint = function(x, cb) {
+-  if(x < this.mid) {
+-    if(this.left) {
+-      var r = this.left.queryPoint(x, cb)
+-      if(r) { return r }
+-    }
+-    return reportLeftRange(this.leftPoints, x, cb)
+-  } else if(x > this.mid) {
+-    if(this.right) {
+-      var r = this.right.queryPoint(x, cb)
+-      if(r) { return r }
+-    }
+-    return reportRightRange(this.rightPoints, x, cb)
+-  } else {
+-    return reportRange(this.leftPoints, cb)
+-  }
+-}
++function reduceToSingleString(output, base, braces) {
++  var numLinesEst = 0;
++  var length = output.reduce(function(prev, cur) {
++    numLinesEst++;
++    if (cur.indexOf('\n') >= 0) numLinesEst++;
++    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
++  }, 0);
+ 
+-proto.queryInterval = function(lo, hi, cb) {
+-  if(lo < this.mid && this.left) {
+-    var r = this.left.queryInterval(lo, hi, cb)
+-    if(r) { return r }
+-  }
+-  if(hi > this.mid && this.right) {
+-    var r = this.right.queryInterval(lo, hi, cb)
+-    if(r) { return r }
+-  }
+-  if(hi < this.mid) {
+-    return reportLeftRange(this.leftPoints, hi, cb)
+-  } else if(lo > this.mid) {
+-    return reportRightRange(this.rightPoints, lo, cb)
+-  } else {
+-    return reportRange(this.leftPoints, cb)
++  if (length > 60) {
++    return braces[0] +
++           (base === '' ? '' : base + '\n ') +
++           ' ' +
++           output.join(',\n  ') +
++           ' ' +
++           braces[1];
+   }
+-}
+ 
+-function compareNumbers(a, b) {
+-  return a - b
++  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
+ }
+ 
+-function compareBegin(a, b) {
+-  var d = a[0] - b[0]
+-  if(d) { return d }
+-  return a[1] - b[1]
++
++// NOTE: These type checking functions intentionally don't use `instanceof`
++// because it is fragile and can be easily faked with `Object.create()`.
++function isArray(ar) {
++  return Array.isArray(ar);
+ }
++exports.isArray = isArray;
+ 
+-function compareEnd(a, b) {
+-  var d = a[1] - b[1]
+-  if(d) { return d }
+-  return a[0] - b[0]
++function isBoolean(arg) {
++  return typeof arg === 'boolean';
+ }
++exports.isBoolean = isBoolean;
+ 
+-function createIntervalTree(intervals) {
+-  if(intervals.length === 0) {
+-    return null
+-  }
+-  var pts = []
+-  for(var i=0; i<intervals.length; ++i) {
+-    pts.push(intervals[i][0], intervals[i][1])
+-  }
+-  pts.sort(compareNumbers)
++function isNull(arg) {
++  return arg === null;
++}
++exports.isNull = isNull;
+ 
+-  var mid = pts[pts.length>>1]
++function isNullOrUndefined(arg) {
++  return arg == null;
++}
++exports.isNullOrUndefined = isNullOrUndefined;
+ 
+-  var leftIntervals = []
+-  var rightIntervals = []
+-  var centerIntervals = []
+-  for(var i=0; i<intervals.length; ++i) {
+-    var s = intervals[i]
+-    if(s[1] < mid) {
+-      leftIntervals.push(s)
+-    } else if(mid < s[0]) {
+-      rightIntervals.push(s)
+-    } else {
+-      centerIntervals.push(s)
+-    }
+-  }
++function isNumber(arg) {
++  return typeof arg === 'number';
++}
++exports.isNumber = isNumber;
+ 
+-  //Split center intervals
+-  var leftPoints = centerIntervals
+-  var rightPoints = centerIntervals.slice()
+-  leftPoints.sort(compareBegin)
+-  rightPoints.sort(compareEnd)
++function isString(arg) {
++  return typeof arg === 'string';
++}
++exports.isString = isString;
+ 
+-  return new IntervalTreeNode(mid, 
+-    createIntervalTree(leftIntervals),
+-    createIntervalTree(rightIntervals),
+-    leftPoints,
+-    rightPoints)
++function isSymbol(arg) {
++  return typeof arg === 'symbol';
+ }
++exports.isSymbol = isSymbol;
+ 
+-//User friendly wrapper that makes it possible to support empty trees
+-function IntervalTree(root) {
+-  this.root = root
++function isUndefined(arg) {
++  return arg === void 0;
+ }
++exports.isUndefined = isUndefined;
+ 
+-var tproto = IntervalTree.prototype
++function isRegExp(re) {
++  return isObject(re) && objectToString(re) === '[object RegExp]';
++}
++exports.isRegExp = isRegExp;
+ 
+-tproto.insert = function(interval) {
+-  if(this.root) {
+-    this.root.insert(interval)
+-  } else {
+-    this.root = new IntervalTreeNode(interval[0], null, null, [interval], [interval])
+-  }
++function isObject(arg) {
++  return typeof arg === 'object' && arg !== null;
+ }
++exports.isObject = isObject;
+ 
+-tproto.remove = function(interval) {
+-  if(this.root) {
+-    var r = this.root.remove(interval)
+-    if(r === EMPTY) {
+-      this.root = null
+-    }
+-    return r !== NOT_FOUND
+-  }
+-  return false
++function isDate(d) {
++  return isObject(d) && objectToString(d) === '[object Date]';
+ }
++exports.isDate = isDate;
+ 
+-tproto.queryPoint = function(p, cb) {
+-  if(this.root) {
+-    return this.root.queryPoint(p, cb)
+-  }
++function isError(e) {
++  return isObject(e) &&
++      (objectToString(e) === '[object Error]' || e instanceof Error);
+ }
++exports.isError = isError;
+ 
+-tproto.queryInterval = function(lo, hi, cb) {
+-  if(lo <= hi && this.root) {
+-    return this.root.queryInterval(lo, hi, cb)
+-  }
++function isFunction(arg) {
++  return typeof arg === 'function';
+ }
++exports.isFunction = isFunction;
+ 
+-Object.defineProperty(tproto, "count", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root.count
+-    }
+-    return 0
+-  }
+-})
++function isPrimitive(arg) {
++  return arg === null ||
++         typeof arg === 'boolean' ||
++         typeof arg === 'number' ||
++         typeof arg === 'string' ||
++         typeof arg === 'symbol' ||  // ES6 symbol
++         typeof arg === 'undefined';
++}
++exports.isPrimitive = isPrimitive;
+ 
+-Object.defineProperty(tproto, "intervals", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root.intervals([])
+-    }
+-    return []
+-  }
+-})
++exports.isBuffer = require('./support/isBuffer');
+ 
+-function createWrapper(intervals) {
+-  if(!intervals || intervals.length === 0) {
+-    return new IntervalTree(null)
+-  }
+-  return new IntervalTree(createIntervalTree(intervals))
++function objectToString(o) {
++  return Object.prototype.toString.call(o);
+ }
+ 
+-},{"binary-search-bounds":468}],470:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = orderSegments
++function pad(n) {
++  return n < 10 ? '0' + n.toString(10) : n.toString(10);
++}
+ 
+-var orient = require("robust-orientation")
+ 
+-function horizontalOrder(a, b) {
+-  var bl, br
+-  if(b[0][0] < b[1][0]) {
+-    bl = b[0]
+-    br = b[1]
+-  } else if(b[0][0] > b[1][0]) {
+-    bl = b[1]
+-    br = b[0]
+-  } else {
+-    var alo = Math.min(a[0][1], a[1][1])
+-    var ahi = Math.max(a[0][1], a[1][1])
+-    var blo = Math.min(b[0][1], b[1][1])
+-    var bhi = Math.max(b[0][1], b[1][1])
+-    if(ahi < blo) {
+-      return ahi - blo
+-    }
+-    if(alo > bhi) {
+-      return alo - bhi
+-    }
+-    return ahi - bhi
+-  }
+-  var al, ar
+-  if(a[0][1] < a[1][1]) {
+-    al = a[0]
+-    ar = a[1]
+-  } else {
+-    al = a[1]
+-    ar = a[0]
+-  }
+-  var d = orient(br, bl, al)
+-  if(d) {
+-    return d
+-  }
+-  d = orient(br, bl, ar)
+-  if(d) {
+-    return d
+-  }
+-  return ar - br
+-}
++var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
++              'Oct', 'Nov', 'Dec'];
+ 
+-function orderSegments(b, a) {
+-  var al, ar
+-  if(a[0][0] < a[1][0]) {
+-    al = a[0]
+-    ar = a[1]
+-  } else if(a[0][0] > a[1][0]) {
+-    al = a[1]
+-    ar = a[0]
+-  } else {
+-    return horizontalOrder(a, b)
+-  }
+-  var bl, br
+-  if(b[0][0] < b[1][0]) {
+-    bl = b[0]
+-    br = b[1]
+-  } else if(b[0][0] > b[1][0]) {
+-    bl = b[1]
+-    br = b[0]
+-  } else {
+-    return -horizontalOrder(b, a)
+-  }
+-  var d1 = orient(al, ar, br)
+-  var d2 = orient(al, ar, bl)
+-  if(d1 < 0) {
+-    if(d2 <= 0) {
+-      return d1
+-    }
+-  } else if(d1 > 0) {
+-    if(d2 >= 0) {
+-      return d1
+-    }
+-  } else if(d2) {
+-    return d2
+-  }
+-  d1 = orient(br, bl, ar)
+-  d2 = orient(br, bl, al)
+-  if(d1 < 0) {
+-    if(d2 <= 0) {
+-      return d1
+-    }
+-  } else if(d1 > 0) {
+-    if(d2 >= 0) {
+-      return d1
+-    }
+-  } else if(d2) {
+-    return d2
+-  }
+-  return ar[0] - br[0]
++// 26 Feb 16:19:34
++function timestamp() {
++  var d = new Date();
++  var time = [pad(d.getHours()),
++              pad(d.getMinutes()),
++              pad(d.getSeconds())].join(':');
++  return [d.getDate(), months[d.getMonth()], time].join(' ');
+ }
+-},{"robust-orientation":439}],471:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = createRBTree
+ 
+-var RED   = 0
+-var BLACK = 1
++// log is just a thin wrapper to console.log that prepends a timestamp
++exports.log = function() {
++  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
++};
+ 
+-function RBNode(color, key, value, left, right, count) {
+-  this._color = color
+-  this.key = key
+-  this.value = value
+-  this.left = left
+-  this.right = right
+-  this._count = count
+-}
+ 
+-function cloneNode(node) {
+-  return new RBNode(node._color, node.key, node.value, node.left, node.right, node._count)
+-}
++/**
++ * Inherit the prototype methods from one constructor into another.
++ *
++ * The Function.prototype.inherits from lang.js rewritten as a standalone
++ * function (not on Function.prototype). NOTE: If this file is to be loaded
++ * during bootstrapping this function needs to be rewritten using some native
++ * functions as prototype setup using normal JavaScript does not work as
++ * expected during bootstrapping (see mirror.js in r114903).
++ *
++ * @param {function} ctor Constructor function which needs to inherit the
++ *     prototype.
++ * @param {function} superCtor Constructor function to inherit prototype from.
++ */
++exports.inherits = require('inherits');
+ 
+-function repaint(color, node) {
+-  return new RBNode(color, node.key, node.value, node.left, node.right, node._count)
+-}
++exports._extend = function(origin, add) {
++  // Don't do anything if add isn't an object
++  if (!add || !isObject(add)) return origin;
+ 
+-function recount(node) {
+-  node._count = 1 + (node.left ? node.left._count : 0) + (node.right ? node.right._count : 0)
+-}
++  var keys = Object.keys(add);
++  var i = keys.length;
++  while (i--) {
++    origin[keys[i]] = add[keys[i]];
++  }
++  return origin;
++};
+ 
+-function RedBlackTree(compare, root) {
+-  this._compare = compare
+-  this.root = root
++function hasOwnProperty(obj, prop) {
++  return Object.prototype.hasOwnProperty.call(obj, prop);
+ }
+ 
+-var proto = RedBlackTree.prototype
++}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"./support/isBuffer":454,"_process":403,"inherits":453}],456:[function(require,module,exports){
++module.exports.VectorTile = require('./lib/vectortile.js');
++module.exports.VectorTileFeature = require('./lib/vectortilefeature.js');
++module.exports.VectorTileLayer = require('./lib/vectortilelayer.js');
+ 
+-Object.defineProperty(proto, "keys", {
+-  get: function() {
+-    var result = []
+-    this.forEach(function(k,v) {
+-      result.push(k)
+-    })
+-    return result
+-  }
+-})
++},{"./lib/vectortile.js":457,"./lib/vectortilefeature.js":458,"./lib/vectortilelayer.js":459}],457:[function(require,module,exports){
++'use strict';
+ 
+-Object.defineProperty(proto, "values", {
+-  get: function() {
+-    var result = []
+-    this.forEach(function(k,v) {
+-      result.push(v)
+-    })
+-    return result
+-  }
+-})
++var VectorTileLayer = require('./vectortilelayer');
+ 
+-//Returns the number of nodes in the tree
+-Object.defineProperty(proto, "length", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root._count
+-    }
+-    return 0
+-  }
+-})
++module.exports = VectorTile;
+ 
+-//Insert a new item into the tree
+-proto.insert = function(key, value) {
+-  var cmp = this._compare
+-  //Find point to insert new node at
+-  var n = this.root
+-  var n_stack = []
+-  var d_stack = []
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    n_stack.push(n)
+-    d_stack.push(d)
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
+-  }
+-  //Rebuild path to leaf node
+-  n_stack.push(new RBNode(RED, key, value, null, null, 1))
+-  for(var s=n_stack.length-2; s>=0; --s) {
+-    var n = n_stack[s]
+-    if(d_stack[s] <= 0) {
+-      n_stack[s] = new RBNode(n._color, n.key, n.value, n_stack[s+1], n.right, n._count+1)
+-    } else {
+-      n_stack[s] = new RBNode(n._color, n.key, n.value, n.left, n_stack[s+1], n._count+1)
+-    }
+-  }
+-  //Rebalance tree using rotations
+-  //console.log("start insert", key, d_stack)
+-  for(var s=n_stack.length-1; s>1; --s) {
+-    var p = n_stack[s-1]
+-    var n = n_stack[s]
+-    if(p._color === BLACK || n._color === BLACK) {
+-      break
+-    }
+-    var pp = n_stack[s-2]
+-    if(pp.left === p) {
+-      if(p.left === n) {
+-        var y = pp.right
+-        if(y && y._color === RED) {
+-          //console.log("LLr")
+-          p._color = BLACK
+-          pp.right = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("LLb")
+-          pp._color = RED
+-          pp.left = p.right
+-          p._color = BLACK
+-          p.right = pp
+-          n_stack[s-2] = p
+-          n_stack[s-1] = n
+-          recount(pp)
+-          recount(p)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.left === pp) {
+-              ppp.left = p
+-            } else {
+-              ppp.right = p
+-            }
+-          }
+-          break
+-        }
+-      } else {
+-        var y = pp.right
+-        if(y && y._color === RED) {
+-          //console.log("LRr")
+-          p._color = BLACK
+-          pp.right = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("LRb")
+-          p.right = n.left
+-          pp._color = RED
+-          pp.left = n.right
+-          n._color = BLACK
+-          n.left = p
+-          n.right = pp
+-          n_stack[s-2] = n
+-          n_stack[s-1] = p
+-          recount(pp)
+-          recount(p)
+-          recount(n)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.left === pp) {
+-              ppp.left = n
+-            } else {
+-              ppp.right = n
+-            }
+-          }
+-          break
+-        }
+-      }
+-    } else {
+-      if(p.right === n) {
+-        var y = pp.left
+-        if(y && y._color === RED) {
+-          //console.log("RRr", y.key)
+-          p._color = BLACK
+-          pp.left = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("RRb")
+-          pp._color = RED
+-          pp.right = p.left
+-          p._color = BLACK
+-          p.left = pp
+-          n_stack[s-2] = p
+-          n_stack[s-1] = n
+-          recount(pp)
+-          recount(p)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.right === pp) {
+-              ppp.right = p
+-            } else {
+-              ppp.left = p
+-            }
+-          }
+-          break
+-        }
+-      } else {
+-        var y = pp.left
+-        if(y && y._color === RED) {
+-          //console.log("RLr")
+-          p._color = BLACK
+-          pp.left = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("RLb")
+-          p.left = n.right
+-          pp._color = RED
+-          pp.right = n.left
+-          n._color = BLACK
+-          n.right = p
+-          n.left = pp
+-          n_stack[s-2] = n
+-          n_stack[s-1] = p
+-          recount(pp)
+-          recount(p)
+-          recount(n)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.right === pp) {
+-              ppp.right = n
+-            } else {
+-              ppp.left = n
+-            }
+-          }
+-          break
+-        }
+-      }
++function VectorTile(pbf, end) {
++    this.layers = pbf.readFields(readTile, {}, end);
++}
++
++function readTile(tag, layers, pbf) {
++    if (tag === 3) {
++        var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);
++        if (layer.length) layers[layer.name] = layer;
+     }
+-  }
+-  //Return new tree
+-  n_stack[0]._color = BLACK
+-  return new RedBlackTree(cmp, n_stack[0])
+ }
+ 
+ 
+-//Visit all nodes inorder
+-function doVisitFull(visit, node) {
+-  if(node.left) {
+-    var v = doVisitFull(visit, node.left)
+-    if(v) { return v }
+-  }
+-  var v = visit(node.key, node.value)
+-  if(v) { return v }
+-  if(node.right) {
+-    return doVisitFull(visit, node.right)
+-  }
++},{"./vectortilelayer":459}],458:[function(require,module,exports){
++'use strict';
++
++var Point = require('point-geometry');
++
++module.exports = VectorTileFeature;
++
++function VectorTileFeature(pbf, end, extent, keys, values) {
++    // Public
++    this.properties = {};
++    this.extent = extent;
++    this.type = 0;
++
++    // Private
++    this._pbf = pbf;
++    this._geometry = -1;
++    this._keys = keys;
++    this._values = values;
++
++    pbf.readFields(readFeature, this, end);
+ }
+ 
+-//Visit half nodes in order
+-function doVisitHalf(lo, compare, visit, node) {
+-  var l = compare(lo, node.key)
+-  if(l <= 0) {
+-    if(node.left) {
+-      var v = doVisitHalf(lo, compare, visit, node.left)
+-      if(v) { return v }
+-    }
+-    var v = visit(node.key, node.value)
+-    if(v) { return v }
+-  }
+-  if(node.right) {
+-    return doVisitHalf(lo, compare, visit, node.right)
+-  }
++function readFeature(tag, feature, pbf) {
++    if (tag == 1) feature.id = pbf.readVarint();
++    else if (tag == 2) readTag(pbf, feature);
++    else if (tag == 3) feature.type = pbf.readVarint();
++    else if (tag == 4) feature._geometry = pbf.pos;
+ }
+ 
+-//Visit all nodes within a range
+-function doVisit(lo, hi, compare, visit, node) {
+-  var l = compare(lo, node.key)
+-  var h = compare(hi, node.key)
+-  var v
+-  if(l <= 0) {
+-    if(node.left) {
+-      v = doVisit(lo, hi, compare, visit, node.left)
+-      if(v) { return v }
+-    }
+-    if(h > 0) {
+-      v = visit(node.key, node.value)
+-      if(v) { return v }
++function readTag(pbf, feature) {
++    var end = pbf.readVarint() + pbf.pos;
++
++    while (pbf.pos < end) {
++        var key = feature._keys[pbf.readVarint()],
++            value = feature._values[pbf.readVarint()];
++        feature.properties[key] = value;
+     }
+-  }
+-  if(h > 0 && node.right) {
+-    return doVisit(lo, hi, compare, visit, node.right)
+-  }
+ }
+ 
++VectorTileFeature.types = ['Unknown', 'Point', 'LineString', 'Polygon'];
+ 
+-proto.forEach = function rbTreeForEach(visit, lo, hi) {
+-  if(!this.root) {
+-    return
+-  }
+-  switch(arguments.length) {
+-    case 1:
+-      return doVisitFull(visit, this.root)
+-    break
++VectorTileFeature.prototype.loadGeometry = function() {
++    var pbf = this._pbf;
++    pbf.pos = this._geometry;
+ 
+-    case 2:
+-      return doVisitHalf(lo, this._compare, visit, this.root)
+-    break
++    var end = pbf.readVarint() + pbf.pos,
++        cmd = 1,
++        length = 0,
++        x = 0,
++        y = 0,
++        lines = [],
++        line;
+ 
+-    case 3:
+-      if(this._compare(lo, hi) >= 0) {
+-        return
+-      }
+-      return doVisit(lo, hi, this._compare, visit, this.root)
+-    break
+-  }
+-}
++    while (pbf.pos < end) {
++        if (!length) {
++            var cmdLen = pbf.readVarint();
++            cmd = cmdLen & 0x7;
++            length = cmdLen >> 3;
++        }
+ 
+-//First item in list
+-Object.defineProperty(proto, "begin", {
+-  get: function() {
+-    var stack = []
+-    var n = this.root
+-    while(n) {
+-      stack.push(n)
+-      n = n.left
++        length--;
++
++        if (cmd === 1 || cmd === 2) {
++            x += pbf.readSVarint();
++            y += pbf.readSVarint();
++
++            if (cmd === 1) { // moveTo
++                if (line) lines.push(line);
++                line = [];
++            }
++
++            line.push(new Point(x, y));
++
++        } else if (cmd === 7) {
++
++            // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90
++            if (line) {
++                line.push(line[0].clone()); // closePolygon
++            }
++
++        } else {
++            throw new Error('unknown command ' + cmd);
++        }
+     }
+-    return new RedBlackTreeIterator(this, stack)
+-  }
+-})
+ 
+-//Last item in list
+-Object.defineProperty(proto, "end", {
+-  get: function() {
+-    var stack = []
+-    var n = this.root
+-    while(n) {
+-      stack.push(n)
+-      n = n.right
++    if (line) lines.push(line);
++
++    return lines;
++};
++
++VectorTileFeature.prototype.bbox = function() {
++    var pbf = this._pbf;
++    pbf.pos = this._geometry;
++
++    var end = pbf.readVarint() + pbf.pos,
++        cmd = 1,
++        length = 0,
++        x = 0,
++        y = 0,
++        x1 = Infinity,
++        x2 = -Infinity,
++        y1 = Infinity,
++        y2 = -Infinity;
++
++    while (pbf.pos < end) {
++        if (!length) {
++            var cmdLen = pbf.readVarint();
++            cmd = cmdLen & 0x7;
++            length = cmdLen >> 3;
++        }
++
++        length--;
++
++        if (cmd === 1 || cmd === 2) {
++            x += pbf.readSVarint();
++            y += pbf.readSVarint();
++            if (x < x1) x1 = x;
++            if (x > x2) x2 = x;
++            if (y < y1) y1 = y;
++            if (y > y2) y2 = y;
++
++        } else if (cmd !== 7) {
++            throw new Error('unknown command ' + cmd);
++        }
+     }
+-    return new RedBlackTreeIterator(this, stack)
+-  }
+-})
+ 
+-//Find the ith item in the tree
+-proto.at = function(idx) {
+-  if(idx < 0) {
+-    return new RedBlackTreeIterator(this, [])
+-  }
+-  var n = this.root
+-  var stack = []
+-  while(true) {
+-    stack.push(n)
+-    if(n.left) {
+-      if(idx < n.left._count) {
+-        n = n.left
+-        continue
+-      }
+-      idx -= n.left._count
++    return [x1, y1, x2, y2];
++};
++
++VectorTileFeature.prototype.toGeoJSON = function(x, y, z) {
++    var size = this.extent * Math.pow(2, z),
++        x0 = this.extent * x,
++        y0 = this.extent * y,
++        coords = this.loadGeometry(),
++        type = VectorTileFeature.types[this.type],
++        i, j;
++
++    function project(line) {
++        for (var j = 0; j < line.length; j++) {
++            var p = line[j], y2 = 180 - (p.y + y0) * 360 / size;
++            line[j] = [
++                (p.x + x0) * 360 / size - 180,
++                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
++            ];
++        }
+     }
+-    if(!idx) {
+-      return new RedBlackTreeIterator(this, stack)
++
++    switch (this.type) {
++    case 1:
++        var points = [];
++        for (i = 0; i < coords.length; i++) {
++            points[i] = coords[i][0];
++        }
++        coords = points;
++        project(coords);
++        break;
++
++    case 2:
++        for (i = 0; i < coords.length; i++) {
++            project(coords[i]);
++        }
++        break;
++
++    case 3:
++        coords = classifyRings(coords);
++        for (i = 0; i < coords.length; i++) {
++            for (j = 0; j < coords[i].length; j++) {
++                project(coords[i][j]);
++            }
++        }
++        break;
+     }
+-    idx -= 1
+-    if(n.right) {
+-      if(idx >= n.right._count) {
+-        break
+-      }
+-      n = n.right
++
++    if (coords.length === 1) {
++        coords = coords[0];
+     } else {
+-      break
++        type = 'Multi' + type;
+     }
+-  }
+-  return new RedBlackTreeIterator(this, [])
+-}
+ 
+-proto.ge = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d <= 0) {
+-      last_ptr = stack.length
++    var result = {
++        type: "Feature",
++        geometry: {
++            type: type,
++            coordinates: coords
++        },
++        properties: this.properties
++    };
++
++    if ('id' in this) {
++        result.id = this.id;
+     }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++
++    return result;
++};
++
++// classifies an array of rings into polygons with outer rings and holes
++
++function classifyRings(rings) {
++    var len = rings.length;
++
++    if (len <= 1) return [rings];
++
++    var polygons = [],
++        polygon,
++        ccw;
++
++    for (var i = 0; i < len; i++) {
++        var area = signedArea(rings[i]);
++        if (area === 0) continue;
++
++        if (ccw === undefined) ccw = area < 0;
++
++        if (ccw === area < 0) {
++            if (polygon) polygons.push(polygon);
++            polygon = [rings[i]];
++
++        } else {
++            polygon.push(rings[i]);
++        }
+     }
+-  }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++    if (polygon) polygons.push(polygon);
++
++    return polygons;
+ }
+ 
+-proto.gt = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d < 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d < 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++function signedArea(ring) {
++    var sum = 0;
++    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
++        p1 = ring[i];
++        p2 = ring[j];
++        sum += (p2.x - p1.x) * (p1.y + p2.y);
+     }
+-  }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++    return sum;
+ }
+ 
+-proto.lt = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d > 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
+-  }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++},{"point-geometry":400}],459:[function(require,module,exports){
++'use strict';
++
++var VectorTileFeature = require('./vectortilefeature.js');
++
++module.exports = VectorTileLayer;
++
++function VectorTileLayer(pbf, end) {
++    // Public
++    this.version = 1;
++    this.name = null;
++    this.extent = 4096;
++    this.length = 0;
++
++    // Private
++    this._pbf = pbf;
++    this._keys = [];
++    this._values = [];
++    this._features = [];
++
++    pbf.readFields(readLayer, this, end);
++
++    this.length = this._features.length;
+ }
+ 
+-proto.le = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d >= 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d < 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++function readLayer(tag, layer, pbf) {
++    if (tag === 15) layer.version = pbf.readVarint();
++    else if (tag === 1) layer.name = pbf.readString();
++    else if (tag === 5) layer.extent = pbf.readVarint();
++    else if (tag === 2) layer._features.push(pbf.pos);
++    else if (tag === 3) layer._keys.push(pbf.readString());
++    else if (tag === 4) layer._values.push(readValueMessage(pbf));
++}
++
++function readValueMessage(pbf) {
++    var value = null,
++        end = pbf.readVarint() + pbf.pos;
++
++    while (pbf.pos < end) {
++        var tag = pbf.readVarint() >> 3;
++
++        value = tag === 1 ? pbf.readString() :
++            tag === 2 ? pbf.readFloat() :
++            tag === 3 ? pbf.readDouble() :
++            tag === 4 ? pbf.readVarint64() :
++            tag === 5 ? pbf.readVarint() :
++            tag === 6 ? pbf.readSVarint() :
++            tag === 7 ? pbf.readBoolean() : null;
+     }
++
++    return value;
++}
++
++// return feature `i` from this layer as a `VectorTileFeature`
++VectorTileLayer.prototype.feature = function(i) {
++    if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');
++
++    this._pbf.pos = this._features[i];
++
++    var end = this._pbf.readVarint() + this._pbf.pos;
++    return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);
++};
++
++},{"./vectortilefeature.js":458}],460:[function(require,module,exports){
++"use strict"
++
++module.exports = createText
++
++var vectorizeText = require("./lib/vtext")
++var defaultCanvas = null
++var defaultContext = null
++
++if(typeof document !== 'undefined') {
++  defaultCanvas = document.createElement('canvas')
++  defaultCanvas.width = 8192
++  defaultCanvas.height = 1024
++  defaultContext = defaultCanvas.getContext("2d")
++}
++
++function createText(str, options) {
++  if((typeof options !== "object") || (options === null)) {
++    options = {}
+   }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++  return vectorizeText(
++    str,
++    options.canvas || defaultCanvas,
++    options.context || defaultContext,
++    options)
+ }
+ 
+-//Finds the item with key if it exists
+-proto.find = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d === 0) {
+-      return new RedBlackTreeIterator(this, stack)
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++},{"./lib/vtext":461}],461:[function(require,module,exports){
++"use strict"
++
++module.exports = vectorizeText
++module.exports.processPixels = processPixels
++
++var surfaceNets = require('surface-nets')
++var ndarray = require('ndarray')
++var simplify = require('simplify-planar-graph')
++var cleanPSLG = require('clean-pslg')
++var cdt2d = require('cdt2d')
++var toPolygonCrappy = require('planar-graph-to-polyline')
++
++function transformPositions(positions, options, size) {
++  var align = options.textAlign || "start"
++  var baseline = options.textBaseline || "alphabetic"
++
++  var lo = [1<<30, 1<<30]
++  var hi = [0,0]
++  var n = positions.length
++  for(var i=0; i<n; ++i) {
++    var p = positions[i]
++    for(var j=0; j<2; ++j) {
++      lo[j] = Math.min(lo[j], p[j])|0
++      hi[j] = Math.max(hi[j], p[j])|0
+     }
+   }
+-  return new RedBlackTreeIterator(this, [])
+-}
+ 
+-//Removes item with key from tree
+-proto.remove = function(key) {
+-  var iter = this.find(key)
+-  if(iter) {
+-    return iter.remove()
++  var xShift = 0
++  switch(align) {
++    case "center":
++      xShift = -0.5 * (lo[0] + hi[0])
++    break
++
++    case "right":
++    case "end":
++      xShift = -hi[0]
++    break
++
++    case "left":
++    case "start":
++      xShift = -lo[0]
++    break
++
++    default:
++      throw new Error("vectorize-text: Unrecognized textAlign: '" + align + "'")
+   }
+-  return this
+-}
+ 
+-//Returns the item at `key`
+-proto.get = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    if(d === 0) {
+-      return n.value
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
++  var yShift = 0
++  switch(baseline) {
++    case "hanging":
++    case "top":
++      yShift = -lo[1]
++    break
++
++    case "middle":
++      yShift = -0.5 * (lo[1] + hi[1])
++    break
++
++    case "alphabetic":
++    case "ideographic":
++      yShift = -3 * size
++    break
++
++    case "bottom":
++      yShift = -hi[1]
++    break
++
++    default:
++      throw new Error("vectorize-text: Unrecoginized textBaseline: '" + baseline + "'")
+   }
+-  return
+-}
+ 
+-//Iterator for red black tree
+-function RedBlackTreeIterator(tree, stack) {
+-  this.tree = tree
+-  this._stack = stack
+-}
++  var scale = 1.0 / size
++  if("lineHeight" in options) {
++    scale *= +options.lineHeight
++  } else if("width" in options) {
++    scale = options.width / (hi[0] - lo[0])
++  } else if("height" in options) {
++    scale = options.height / (hi[1] - lo[1])
++  }
+ 
+-var iproto = RedBlackTreeIterator.prototype
++  return positions.map(function(p) {
++    return [ scale * (p[0] + xShift), scale * (p[1] + yShift) ]
++  })
++}
+ 
+-//Test if iterator is valid
+-Object.defineProperty(iproto, "valid", {
+-  get: function() {
+-    return this._stack.length > 0
++function getPixels(canvas, context, str, size) {
++  var width = Math.ceil(context.measureText(str).width + 2*size)|0
++  if(width > 8192) {
++    throw new Error("vectorize-text: String too long (sorry, this will get fixed later)")
++  }
++  var height = 3 * size
++  if(canvas.height < height) {
++    canvas.height = height
+   }
+-})
+ 
+-//Node of the iterator
+-Object.defineProperty(iproto, "node", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1]
+-    }
+-    return null
+-  },
+-  enumerable: true
+-})
++  context.fillStyle = "#000"
++  context.fillRect(0, 0, canvas.width, canvas.height)
+ 
+-//Makes a copy of an iterator
+-iproto.clone = function() {
+-  return new RedBlackTreeIterator(this.tree, this._stack.slice())
++  context.fillStyle = "#fff"
++  context.fillText(str, size, 2*size)
++
++  //Cut pixels from image
++  var pixelData = context.getImageData(0, 0, width, height)
++  var pixels = ndarray(pixelData.data, [height, width, 4])
++
++  return pixels.pick(-1,-1,0).transpose(1,0)
+ }
+ 
+-//Swaps two nodes
+-function swapNode(n, v) {
+-  n.key = v.key
+-  n.value = v.value
+-  n.left = v.left
+-  n.right = v.right
+-  n._color = v._color
+-  n._count = v._count
++function getContour(pixels, doSimplify) {
++  var contour = surfaceNets(pixels, 128)
++  if(doSimplify) {
++    return simplify(contour.cells, contour.positions, 0.25)
++  }
++  return {
++    edges: contour.cells,
++    positions: contour.positions
++  }
+ }
+ 
+-//Fix up a double black node in a tree
+-function fixDoubleBlack(stack) {
+-  var n, p, s, z
+-  for(var i=stack.length-1; i>=0; --i) {
+-    n = stack[i]
+-    if(i === 0) {
+-      n._color = BLACK
+-      return
+-    }
+-    //console.log("visit node:", n.key, i, stack[i].key, stack[i-1].key)
+-    p = stack[i-1]
+-    if(p.left === n) {
+-      //console.log("left child")
+-      s = p.right
+-      if(s.right && s.right._color === RED) {
+-        //console.log("case 1: right sibling child red")
+-        s = p.right = cloneNode(s)
+-        z = s.right = cloneNode(s.right)
+-        p.right = s.left
+-        s.left = p
+-        s.right = z
+-        s._color = p._color
+-        n._color = BLACK
+-        p._color = BLACK
+-        z._color = BLACK
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = s
+-          } else {
+-            pp.right = s
+-          }
+-        }
+-        stack[i-1] = s
+-        return
+-      } else if(s.left && s.left._color === RED) {
+-        //console.log("case 1: left sibling child red")
+-        s = p.right = cloneNode(s)
+-        z = s.left = cloneNode(s.left)
+-        p.right = z.left
+-        s.left = z.right
+-        z.left = p
+-        z.right = s
+-        z._color = p._color
+-        p._color = BLACK
+-        s._color = BLACK
+-        n._color = BLACK
+-        recount(p)
+-        recount(s)
+-        recount(z)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = z
+-          } else {
+-            pp.right = z
+-          }
+-        }
+-        stack[i-1] = z
+-        return
+-      }
+-      if(s._color === BLACK) {
+-        if(p._color === RED) {
+-          //console.log("case 2: black sibling, red parent", p.right.value)
+-          p._color = BLACK
+-          p.right = repaint(RED, s)
+-          return
+-        } else {
+-          //console.log("case 2: black sibling, black parent", p.right.value)
+-          p.right = repaint(RED, s)
+-          continue  
+-        }
+-      } else {
+-        //console.log("case 3: red sibling")
+-        s = cloneNode(s)
+-        p.right = s.left
+-        s.left = p
+-        s._color = p._color
+-        p._color = RED
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = s
+-          } else {
+-            pp.right = s
+-          }
+-        }
+-        stack[i-1] = s
+-        stack[i] = p
+-        if(i+1 < stack.length) {
+-          stack[i+1] = n
+-        } else {
+-          stack.push(n)
+-        }
+-        i = i+2
+-      }
+-    } else {
+-      //console.log("right child")
+-      s = p.left
+-      if(s.left && s.left._color === RED) {
+-        //console.log("case 1: left sibling child red", p.value, p._color)
+-        s = p.left = cloneNode(s)
+-        z = s.left = cloneNode(s.left)
+-        p.left = s.right
+-        s.right = p
+-        s.left = z
+-        s._color = p._color
+-        n._color = BLACK
+-        p._color = BLACK
+-        z._color = BLACK
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = s
+-          } else {
+-            pp.left = s
+-          }
+-        }
+-        stack[i-1] = s
+-        return
+-      } else if(s.right && s.right._color === RED) {
+-        //console.log("case 1: right sibling child red")
+-        s = p.left = cloneNode(s)
+-        z = s.right = cloneNode(s.right)
+-        p.left = z.right
+-        s.right = z.left
+-        z.right = p
+-        z.left = s
+-        z._color = p._color
+-        p._color = BLACK
+-        s._color = BLACK
+-        n._color = BLACK
+-        recount(p)
+-        recount(s)
+-        recount(z)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = z
+-          } else {
+-            pp.left = z
+-          }
+-        }
+-        stack[i-1] = z
+-        return
+-      }
+-      if(s._color === BLACK) {
+-        if(p._color === RED) {
+-          //console.log("case 2: black sibling, red parent")
+-          p._color = BLACK
+-          p.left = repaint(RED, s)
+-          return
+-        } else {
+-          //console.log("case 2: black sibling, black parent")
+-          p.left = repaint(RED, s)
+-          continue  
+-        }
+-      } else {
+-        //console.log("case 3: red sibling")
+-        s = cloneNode(s)
+-        p.left = s.right
+-        s.right = p
+-        s._color = p._color
+-        p._color = RED
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = s
+-          } else {
+-            pp.left = s
+-          }
++function processPixelsImpl(pixels, options, size, simplify) {
++  //Extract contour
++  var contour = getContour(pixels, simplify)
++
++  //Apply warp to positions
++  var positions = transformPositions(contour.positions, options, size)
++  var edges     = contour.edges
++  var flip = "ccw" === options.orientation
++
++  //Clean up the PSLG, resolve self intersections, etc.
++  cleanPSLG(positions, edges)
++
++  //If triangulate flag passed, triangulate the result
++  if(options.polygons || options.polygon || options.polyline) {
++    var result = toPolygonCrappy(edges, positions)
++    var nresult = new Array(result.length)
++    for(var i=0; i<result.length; ++i) {
++      var loops = result[i]
++      var nloops = new Array(loops.length)
++      for(var j=0; j<loops.length; ++j) {
++        var loop = loops[j]
++        var nloop = new Array(loop.length)
++        for(var k=0; k<loop.length; ++k) {
++          nloop[k] = positions[loop[k]].slice()
+         }
+-        stack[i-1] = s
+-        stack[i] = p
+-        if(i+1 < stack.length) {
+-          stack[i+1] = n
+-        } else {
+-          stack.push(n)
++        if(flip) {
++          nloop.reverse()
+         }
+-        i = i+2
++        nloops[j] = nloop
+       }
++      nresult[i] = nloops
++    }
++    return nresult
++  } else if(options.triangles || options.triangulate || options.triangle) {
++    return {
++      cells: cdt2d(positions, edges, {
++        delaunay: false,
++        exterior: false,
++        interior: true
++      }),
++      positions: positions
++    }
++  } else {
++    return {
++      edges:     edges,
++      positions: positions
+     }
+   }
+ }
+ 
+-//Removes item at iterator from tree
+-iproto.remove = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return this.tree
++function processPixels(pixels, options, size) {
++  try {
++    return processPixelsImpl(pixels, options, size, true)
++  } catch(e) {}
++  try {
++    return processPixelsImpl(pixels, options, size, false)
++  } catch(e) {}
++  if(options.polygons || options.polyline || options.polygon) {
++    return []
+   }
+-  //First copy path to node
+-  var cstack = new Array(stack.length)
+-  var n = stack[stack.length-1]
+-  cstack[cstack.length-1] = new RBNode(n._color, n.key, n.value, n.left, n.right, n._count)
+-  for(var i=stack.length-2; i>=0; --i) {
+-    var n = stack[i]
+-    if(n.left === stack[i+1]) {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
+-    } else {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++  if(options.triangles || options.triangulate || options.triangle) {
++    return {
++      cells: [],
++      positions: []
+     }
+   }
++  return {
++    edges: [],
++    positions: []
++  }
++}
+ 
+-  //Get node
+-  n = cstack[cstack.length-1]
+-  //console.log("start remove: ", n.value)
++function vectorizeText(str, canvas, context, options) {
++  var size = options.size || 64
++  var family = options.font || "normal"
+ 
+-  //If not leaf, then swap with previous node
+-  if(n.left && n.right) {
+-    //console.log("moving to leaf")
++  context.font = size + "px " + family
++  context.textAlign = "start"
++  context.textBaseline = "alphabetic"
++  context.direction = "ltr"
+ 
+-    //First walk to previous leaf
+-    var split = cstack.length
+-    n = n.left
+-    while(n.right) {
+-      cstack.push(n)
+-      n = n.right
+-    }
+-    //Copy path to leaf
+-    var v = cstack[split-1]
+-    cstack.push(new RBNode(n._color, v.key, v.value, n.left, n.right, n._count))
+-    cstack[split-1].key = n.key
+-    cstack[split-1].value = n.value
++  var pixels = getPixels(canvas, context, str, size)
+ 
+-    //Fix up stack
+-    for(var i=cstack.length-2; i>=split; --i) {
+-      n = cstack[i]
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
+-    }
+-    cstack[split-1].left = cstack[split]
++  return processPixels(pixels, options, size)
++}
++
++},{"cdt2d":62,"clean-pslg":71,"ndarray":385,"planar-graph-to-polyline":399,"simplify-planar-graph":433,"surface-nets":440}],462:[function(require,module,exports){
++var Pbf = require('pbf')
++var vtpb = require('./vector-tile-pb')
++var GeoJSONWrapper = require('./lib/geojson_wrapper')
++
++module.exports = fromVectorTileJs
++module.exports.fromVectorTileJs = fromVectorTileJs
++module.exports.fromGeojsonVt = fromGeojsonVt
++module.exports.GeoJSONWrapper = GeoJSONWrapper
++
++/**
++ * Serialize a vector-tile-js-created tile to pbf
++ *
++ * @param {Object} tile
++ * @return {Buffer} uncompressed, pbf-serialized tile data
++ */
++function fromVectorTileJs (tile) {
++  var layers = []
++  for (var l in tile.layers) {
++    layers.push(prepareLayer(tile.layers[l]))
+   }
+-  //console.log("stack=", cstack.map(function(v) { return v.value }))
+ 
+-  //Remove leaf node
+-  n = cstack[cstack.length-1]
+-  if(n._color === RED) {
+-    //Easy case: removing red leaf
+-    //console.log("RED leaf")
+-    var p = cstack[cstack.length-2]
+-    if(p.left === n) {
+-      p.left = null
+-    } else if(p.right === n) {
+-      p.right = null
+-    }
+-    cstack.pop()
+-    for(var i=0; i<cstack.length; ++i) {
+-      cstack[i]._count--
+-    }
+-    return new RedBlackTree(this.tree._compare, cstack[0])
+-  } else {
+-    if(n.left || n.right) {
+-      //Second easy case:  Single child black parent
+-      //console.log("BLACK single child")
+-      if(n.left) {
+-        swapNode(n, n.left)
+-      } else if(n.right) {
+-        swapNode(n, n.right)
+-      }
+-      //Child must be red, so repaint it black to balance color
+-      n._color = BLACK
+-      for(var i=0; i<cstack.length-1; ++i) {
+-        cstack[i]._count--
+-      }
+-      return new RedBlackTree(this.tree._compare, cstack[0])
+-    } else if(cstack.length === 1) {
+-      //Third easy case: root
+-      //console.log("ROOT")
+-      return new RedBlackTree(this.tree._compare, null)
+-    } else {
+-      //Hard case: Repaint n, and then do some nasty stuff
+-      //console.log("BLACK leaf no children")
+-      for(var i=0; i<cstack.length; ++i) {
+-        cstack[i]._count--
+-      }
+-      var parent = cstack[cstack.length-2]
+-      fixDoubleBlack(cstack)
+-      //Fix up links
+-      if(parent.left === n) {
+-        parent.left = null
+-      } else {
+-        parent.right = null
+-      }
+-    }
++  var out = new Pbf()
++  vtpb.tile.write({ layers: layers }, out)
++  return out.finish()
++}
++
++/**
++ * Serialized a geojson-vt-created tile to pbf.
++ *
++ * @param {Object} layers - An object mapping layer names to geojson-vt-created vector tile objects
++ * @return {Buffer} uncompressed, pbf-serialized tile data
++ */
++function fromGeojsonVt (layers) {
++  var l = {}
++  for (var k in layers) {
++    l[k] = new GeoJSONWrapper(layers[k].features)
++    l[k].name = k
+   }
+-  return new RedBlackTree(this.tree._compare, cstack[0])
++  return fromVectorTileJs({layers: l})
+ }
+ 
+-//Returns key
+-Object.defineProperty(iproto, "key", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1].key
+-    }
+-    return
+-  },
+-  enumerable: true
+-})
++/**
++ * Prepare the given layer to be serialized by the auto-generated pbf
++ * serializer by encoding the feature geometry and properties.
++ */
++function prepareLayer (layer) {
++  var preparedLayer = {
++    name: layer.name || '',
++    version: layer.version || 1,
++    extent: layer.extent || 4096,
++    keys: [],
++    values: [],
++    features: []
++  }
+ 
+-//Returns value
+-Object.defineProperty(iproto, "value", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1].value
+-    }
+-    return
+-  },
+-  enumerable: true
+-})
++  var keycache = {}
++  var valuecache = {}
+ 
++  for (var i = 0; i < layer.length; i++) {
++    var feature = layer.feature(i)
++    feature.geometry = encodeGeometry(feature.loadGeometry())
+ 
+-//Returns the position of this iterator in the sorted list
+-Object.defineProperty(iproto, "index", {
+-  get: function() {
+-    var idx = 0
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      var r = this.tree.root
+-      if(r) {
+-        return r._count
++    var tags = []
++    for (var key in feature.properties) {
++      var keyIndex = keycache[key]
++      if (typeof keyIndex === 'undefined') {
++        preparedLayer.keys.push(key)
++        keyIndex = preparedLayer.keys.length - 1
++        keycache[key] = keyIndex
+       }
+-      return 0
+-    } else if(stack[stack.length-1].left) {
+-      idx = stack[stack.length-1].left._count
+-    }
+-    for(var s=stack.length-2; s>=0; --s) {
+-      if(stack[s+1] === stack[s].right) {
+-        ++idx
+-        if(stack[s].left) {
+-          idx += stack[s].left._count
+-        }
++      var value = wrapValue(feature.properties[key])
++      var valueIndex = valuecache[value.key]
++      if (typeof valueIndex === 'undefined') {
++        preparedLayer.values.push(value)
++        valueIndex = preparedLayer.values.length - 1
++        valuecache[value.key] = valueIndex
+       }
++      tags.push(keyIndex)
++      tags.push(valueIndex)
+     }
+-    return idx
+-  },
+-  enumerable: true
+-})
+ 
+-//Advances iterator to next element in list
+-iproto.next = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return
+-  }
+-  var n = stack[stack.length-1]
+-  if(n.right) {
+-    n = n.right
+-    while(n) {
+-      stack.push(n)
+-      n = n.left
+-    }
+-  } else {
+-    stack.pop()
+-    while(stack.length > 0 && stack[stack.length-1].right === n) {
+-      n = stack[stack.length-1]
+-      stack.pop()
+-    }
++    feature.tags = tags
++    preparedLayer.features.push(feature)
+   }
++
++  return preparedLayer
+ }
+ 
+-//Checks if iterator is at end of tree
+-Object.defineProperty(iproto, "hasNext", {
+-  get: function() {
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      return false
+-    }
+-    if(stack[stack.length-1].right) {
+-      return true
+-    }
+-    for(var s=stack.length-1; s>0; --s) {
+-      if(stack[s-1].left === stack[s]) {
+-        return true
++function command (cmd, length) {
++  return (length << 3) + (cmd & 0x7)
++}
++
++function zigzag (num) {
++  return (num << 1) ^ (num >> 31)
++}
++
++/**
++ * Encode a polygon's geometry into an array ready to be serialized
++ * to mapbox vector tile specified geometry data.
++ *
++ * @param {Array} Rings, each being an array of [x, y] tile-space coordinates
++ * @return {Array} encoded geometry
++ */
++function encodeGeometry (geometry) {
++  var encoded = []
++  var x = 0
++  var y = 0
++  var rings = geometry.length
++  for (var r = 0; r < rings; r++) {
++    var ring = geometry[r]
++    encoded.push(command(1, 1)) // moveto
++    for (var i = 0; i < ring.length; i++) {
++      if (i === 1) {
++        encoded.push(command(2, ring.length - 1)) // lineto
+       }
++      var dx = ring[i].x - x
++      var dy = ring[i].y - y
++      encoded.push(zigzag(dx), zigzag(dy))
++      x += dx
++      y += dy
+     }
+-    return false
+   }
+-})
+ 
+-//Update value
+-iproto.update = function(value) {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    throw new Error("Can't update empty node!")
+-  }
+-  var cstack = new Array(stack.length)
+-  var n = stack[stack.length-1]
+-  cstack[cstack.length-1] = new RBNode(n._color, n.key, value, n.left, n.right, n._count)
+-  for(var i=stack.length-2; i>=0; --i) {
+-    n = stack[i]
+-    if(n.left === stack[i+1]) {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
++  return encoded
++}
++
++/**
++ * Wrap a property value according to its type. The returned object
++ * is of the form { xxxx_value: primitiveValue }, which is what the generated
++ * protobuf serializer expects.
++ */
++function wrapValue (value) {
++  var result
++  var type = typeof value
++  if (type === 'string') {
++    result = { string_value: value }
++  } else if (type === 'boolean') {
++    result = { bool_value: value }
++  } else if (type === 'number') {
++    if (value % 1 !== 0) {
++      result = { double_value: value }
++    } else if (value < 0) {
++      result = { sint_value: value }
+     } else {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++      result = { uint_value: value }
+     }
++  } else {
++    value = JSON.stringify(value)
++    result = { string_value: value }
+   }
+-  return new RedBlackTree(this.tree._compare, cstack[0])
++
++  result.key = type + ':' + value
++  return result
+ }
+ 
+-//Moves iterator backward one element
+-iproto.prev = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return
+-  }
+-  var n = stack[stack.length-1]
+-  if(n.left) {
+-    n = n.left
+-    while(n) {
+-      stack.push(n)
+-      n = n.right
+-    }
+-  } else {
+-    stack.pop()
+-    while(stack.length > 0 && stack[stack.length-1].left === n) {
+-      n = stack[stack.length-1]
+-      stack.pop()
++},{"./lib/geojson_wrapper":463,"./vector-tile-pb":464,"pbf":394}],463:[function(require,module,exports){
++'use strict'
++
++var Point = require('point-geometry')
++var VectorTileFeature = require('vector-tile').VectorTileFeature
++
++module.exports = GeoJSONWrapper
++
++// conform to vectortile api
++function GeoJSONWrapper (features) {
++  this.features = features
++  this.length = features.length
++}
++
++GeoJSONWrapper.prototype.feature = function (i) {
++  return new FeatureWrapper(this.features[i])
++}
++
++function FeatureWrapper (feature) {
++  this.id = typeof feature.id === 'number' ? feature.id : undefined
++  this.type = feature.type
++  this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry
++  this.properties = feature.tags
++  this.extent = 4096
++}
++
++FeatureWrapper.prototype.loadGeometry = function () {
++  var rings = this.rawGeometry
++  this.geometry = []
++
++  for (var i = 0; i < rings.length; i++) {
++    var ring = rings[i]
++    var newRing = []
++    for (var j = 0; j < ring.length; j++) {
++      newRing.push(new Point(ring[j][0], ring[j][1]))
+     }
++    this.geometry.push(newRing)
+   }
++  return this.geometry
+ }
+ 
+-//Checks if iterator is at start of tree
+-Object.defineProperty(iproto, "hasPrev", {
+-  get: function() {
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      return false
+-    }
+-    if(stack[stack.length-1].left) {
+-      return true
+-    }
+-    for(var s=stack.length-1; s>0; --s) {
+-      if(stack[s-1].right === stack[s]) {
+-        return true
+-      }
++FeatureWrapper.prototype.bbox = function () {
++  if (!this.geometry) this.loadGeometry()
++
++  var rings = this.geometry
++  var x1 = Infinity
++  var x2 = -Infinity
++  var y1 = Infinity
++  var y2 = -Infinity
++
++  for (var i = 0; i < rings.length; i++) {
++    var ring = rings[i]
++
++    for (var j = 0; j < ring.length; j++) {
++      var coord = ring[j]
++
++      x1 = Math.min(x1, coord.x)
++      x2 = Math.max(x2, coord.x)
++      y1 = Math.min(y1, coord.y)
++      y2 = Math.max(y2, coord.y)
+     }
+-    return false
+   }
+-})
+ 
+-//Default comparison function
+-function defaultCompare(a, b) {
+-  if(a < b) {
+-    return -1
++  return [x1, y1, x2, y2]
++}
++
++FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON
++
++},{"point-geometry":400,"vector-tile":456}],464:[function(require,module,exports){
++'use strict';
++
++// tile ========================================
++
++var tile = exports.tile = {read: readTile, write: writeTile};
++
++tile.GeomType = {
++    "Unknown": 0,
++    "Point": 1,
++    "LineString": 2,
++    "Polygon": 3
++};
++
++function readTile(pbf, end) {
++    return pbf.readFields(readTileField, {"layers": []}, end);
++}
++
++function readTileField(tag, tile, pbf) {
++    if (tag === 3) tile.layers.push(readLayer(pbf, pbf.readVarint() + pbf.pos));
++}
++
++function writeTile(tile, pbf) {
++    var i;
++    if (tile.layers !== undefined) for (i = 0; i < tile.layers.length; i++) pbf.writeMessage(3, writeLayer, tile.layers[i]);
++}
++
++// value ========================================
++
++tile.value = {read: readValue, write: writeValue};
++
++function readValue(pbf, end) {
++    return pbf.readFields(readValueField, {}, end);
++}
++
++function readValueField(tag, value, pbf) {
++    if (tag === 1) value.string_value = pbf.readString();
++    else if (tag === 2) value.float_value = pbf.readFloat();
++    else if (tag === 3) value.double_value = pbf.readDouble();
++    else if (tag === 4) value.int_value = pbf.readVarint();
++    else if (tag === 5) value.uint_value = pbf.readVarint();
++    else if (tag === 6) value.sint_value = pbf.readSVarint();
++    else if (tag === 7) value.bool_value = pbf.readBoolean();
++}
++
++function writeValue(value, pbf) {
++    if (value.string_value !== undefined) pbf.writeStringField(1, value.string_value);
++    if (value.float_value !== undefined) pbf.writeFloatField(2, value.float_value);
++    if (value.double_value !== undefined) pbf.writeDoubleField(3, value.double_value);
++    if (value.int_value !== undefined) pbf.writeVarintField(4, value.int_value);
++    if (value.uint_value !== undefined) pbf.writeVarintField(5, value.uint_value);
++    if (value.sint_value !== undefined) pbf.writeSVarintField(6, value.sint_value);
++    if (value.bool_value !== undefined) pbf.writeBooleanField(7, value.bool_value);
++}
++
++// feature ========================================
++
++tile.feature = {read: readFeature, write: writeFeature};
++
++function readFeature(pbf, end) {
++    var feature = pbf.readFields(readFeatureField, {}, end);
++    if (feature.type === undefined) feature.type = "Unknown";
++    return feature;
++}
++
++function readFeatureField(tag, feature, pbf) {
++    if (tag === 1) feature.id = pbf.readVarint();
++    else if (tag === 2) feature.tags = pbf.readPackedVarint();
++    else if (tag === 3) feature.type = pbf.readVarint();
++    else if (tag === 4) feature.geometry = pbf.readPackedVarint();
++}
++
++function writeFeature(feature, pbf) {
++    if (feature.id !== undefined) pbf.writeVarintField(1, feature.id);
++    if (feature.tags !== undefined) pbf.writePackedVarint(2, feature.tags);
++    if (feature.type !== undefined) pbf.writeVarintField(3, feature.type);
++    if (feature.geometry !== undefined) pbf.writePackedVarint(4, feature.geometry);
++}
++
++// layer ========================================
++
++tile.layer = {read: readLayer, write: writeLayer};
++
++function readLayer(pbf, end) {
++    return pbf.readFields(readLayerField, {"features": [], "keys": [], "values": []}, end);
++}
++
++function readLayerField(tag, layer, pbf) {
++    if (tag === 15) layer.version = pbf.readVarint();
++    else if (tag === 1) layer.name = pbf.readString();
++    else if (tag === 2) layer.features.push(readFeature(pbf, pbf.readVarint() + pbf.pos));
++    else if (tag === 3) layer.keys.push(pbf.readString());
++    else if (tag === 4) layer.values.push(readValue(pbf, pbf.readVarint() + pbf.pos));
++    else if (tag === 5) layer.extent = pbf.readVarint();
++}
++
++function writeLayer(layer, pbf) {
++    if (layer.version !== undefined) pbf.writeVarintField(15, layer.version);
++    if (layer.name !== undefined) pbf.writeStringField(1, layer.name);
++    var i;
++    if (layer.features !== undefined) for (i = 0; i < layer.features.length; i++) pbf.writeMessage(2, writeFeature, layer.features[i]);
++    if (layer.keys !== undefined) for (i = 0; i < layer.keys.length; i++) pbf.writeStringField(3, layer.keys[i]);
++    if (layer.values !== undefined) for (i = 0; i < layer.values.length; i++) pbf.writeMessage(4, writeValue, layer.values[i]);
++    if (layer.extent !== undefined) pbf.writeVarintField(5, layer.extent);
++}
++
++},{}],465:[function(require,module,exports){
++// Copyright (C) 2011 Google Inc.
++//
++// Licensed under the Apache License, Version 2.0 (the "License");
++// you may not use this file except in compliance with the License.
++// You may obtain a copy of the License at
++//
++// http://www.apache.org/licenses/LICENSE-2.0
++//
++// Unless required by applicable law or agreed to in writing, software
++// distributed under the License is distributed on an "AS IS" BASIS,
++// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
++// See the License for the specific language governing permissions and
++// limitations under the License.
++
++/**
++ * @fileoverview Install a leaky WeakMap emulation on platforms that
++ * don't provide a built-in one.
++ *
++ * <p>Assumes that an ES5 platform where, if {@code WeakMap} is
++ * already present, then it conforms to the anticipated ES6
++ * specification. To run this file on an ES5 or almost ES5
++ * implementation where the {@code WeakMap} specification does not
++ * quite conform, run <code>repairES5.js</code> first.
++ *
++ * <p>Even though WeakMapModule is not global, the linter thinks it
++ * is, which is why it is in the overrides list below.
++ *
++ * <p>NOTE: Before using this WeakMap emulation in a non-SES
++ * environment, see the note below about hiddenRecord.
++ *
++ * @author Mark S. Miller
++ * @requires crypto, ArrayBuffer, Uint8Array, navigator, console
++ * @overrides WeakMap, ses, Proxy
++ * @overrides WeakMapModule
++ */
++
++/**
++ * This {@code WeakMap} emulation is observably equivalent to the
++ * ES-Harmony WeakMap, but with leakier garbage collection properties.
++ *
++ * <p>As with true WeakMaps, in this emulation, a key does not
++ * retain maps indexed by that key and (crucially) a map does not
++ * retain the keys it indexes. A map by itself also does not retain
++ * the values associated with that map.
++ *
++ * <p>However, the values associated with a key in some map are
++ * retained so long as that key is retained and those associations are
++ * not overridden. For example, when used to support membranes, all
++ * values exported from a given membrane will live for the lifetime
++ * they would have had in the absence of an interposed membrane. Even
++ * when the membrane is revoked, all objects that would have been
++ * reachable in the absence of revocation will still be reachable, as
++ * far as the GC can tell, even though they will no longer be relevant
++ * to ongoing computation.
++ *
++ * <p>The API implemented here is approximately the API as implemented
++ * in FF6.0a1 and agreed to by MarkM, Andreas Gal, and Dave Herman,
++ * rather than the offially approved proposal page. TODO(erights):
++ * upgrade the ecmascript WeakMap proposal page to explain this API
++ * change and present to EcmaScript committee for their approval.
++ *
++ * <p>The first difference between the emulation here and that in
++ * FF6.0a1 is the presence of non enumerable {@code get___, has___,
++ * set___, and delete___} methods on WeakMap instances to represent
++ * what would be the hidden internal properties of a primitive
++ * implementation. Whereas the FF6.0a1 WeakMap.prototype methods
++ * require their {@code this} to be a genuine WeakMap instance (i.e.,
++ * an object of {@code [[Class]]} "WeakMap}), since there is nothing
++ * unforgeable about the pseudo-internal method names used here,
++ * nothing prevents these emulated prototype methods from being
++ * applied to non-WeakMaps with pseudo-internal methods of the same
++ * names.
++ *
++ * <p>Another difference is that our emulated {@code
++ * WeakMap.prototype} is not itself a WeakMap. A problem with the
++ * current FF6.0a1 API is that WeakMap.prototype is itself a WeakMap
++ * providing ambient mutability and an ambient communications
++ * channel. Thus, if a WeakMap is already present and has this
++ * problem, repairES5.js wraps it in a safe wrappper in order to
++ * prevent access to this channel. (See
++ * PATCH_MUTABLE_FROZEN_WEAKMAP_PROTO in repairES5.js).
++ */
++
++/**
++ * If this is a full <a href=
++ * "http://code.google.com/p/es-lab/wiki/SecureableES5"
++ * >secureable ES5</a> platform and the ES-Harmony {@code WeakMap} is
++ * absent, install an approximate emulation.
++ *
++ * <p>If WeakMap is present but cannot store some objects, use our approximate
++ * emulation as a wrapper.
++ *
++ * <p>If this is almost a secureable ES5 platform, then WeakMap.js
++ * should be run after repairES5.js.
++ *
++ * <p>See {@code WeakMap} for documentation of the garbage collection
++ * properties of this WeakMap emulation.
++ */
++(function WeakMapModule() {
++  "use strict";
++
++  if (typeof ses !== 'undefined' && ses.ok && !ses.ok()) {
++    // already too broken, so give up
++    return;
++  }
++
++  /**
++   * In some cases (current Firefox), we must make a choice betweeen a
++   * WeakMap which is capable of using all varieties of host objects as
++   * keys and one which is capable of safely using proxies as keys. See
++   * comments below about HostWeakMap and DoubleWeakMap for details.
++   *
++   * This function (which is a global, not exposed to guests) marks a
++   * WeakMap as permitted to do what is necessary to index all host
++   * objects, at the cost of making it unsafe for proxies.
++   *
++   * Do not apply this function to anything which is not a genuine
++   * fresh WeakMap.
++   */
++  function weakMapPermitHostObjects(map) {
++    // identity of function used as a secret -- good enough and cheap
++    if (map.permitHostObjects___) {
++      map.permitHostObjects___(weakMapPermitHostObjects);
++    }
+   }
+-  if(a > b) {
+-    return 1
++  if (typeof ses !== 'undefined') {
++    ses.weakMapPermitHostObjects = weakMapPermitHostObjects;
+   }
+-  return 0
+-}
+-
+-//Build a tree
+-function createRBTree(compare) {
+-  return new RedBlackTree(compare || defaultCompare, null)
+-}
+-},{}],472:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = createSlabDecomposition
+-
+-var bounds = require("binary-search-bounds")
+-var createRBTree = require("functional-red-black-tree")
+-var orient = require("robust-orientation")
+-var orderSegments = require("./lib/order-segments")
+ 
+-function SlabDecomposition(slabs, coordinates, horizontal) {
+-  this.slabs = slabs
+-  this.coordinates = coordinates
+-  this.horizontal = horizontal
+-}
++  // IE 11 has no Proxy but has a broken WeakMap such that we need to patch
++  // it using DoubleWeakMap; this flag tells DoubleWeakMap so.
++  var doubleWeakMapCheckSilentFailure = false;
+ 
+-var proto = SlabDecomposition.prototype
++  // Check if there is already a good-enough WeakMap implementation, and if so
++  // exit without replacing it.
++  if (typeof WeakMap === 'function') {
++    var HostWeakMap = WeakMap;
++    // There is a WeakMap -- is it good enough?
++    if (typeof navigator !== 'undefined' &&
++        /Firefox/.test(navigator.userAgent)) {
++      // We're now *assuming not*, because as of this writing (2013-05-06)
++      // Firefox's WeakMaps have a miscellany of objects they won't accept, and
++      // we don't want to make an exhaustive list, and testing for just one
++      // will be a problem if that one is fixed alone (as they did for Event).
+ 
+-function compareHorizontal(e, y) {
+-  return e.y - y
+-}
++      // If there is a platform that we *can* reliably test on, here's how to
++      // do it:
++      //  var problematic = ... ;
++      //  var testHostMap = new HostWeakMap();
++      //  try {
++      //    testHostMap.set(problematic, 1);  // Firefox 20 will throw here
++      //    if (testHostMap.get(problematic) === 1) {
++      //      return;
++      //    }
++      //  } catch (e) {}
+ 
+-function searchBucket(root, p) {
+-  var lastNode = null
+-  while(root) {
+-    var seg = root.key
+-    var l, r
+-    if(seg[0][0] < seg[1][0]) {
+-      l = seg[0]
+-      r = seg[1]
+-    } else {
+-      l = seg[1]
+-      r = seg[0]
+-    }
+-    var o = orient(l, r, p)
+-    if(o < 0) {
+-      root = root.left
+-    } else if(o > 0) {
+-      if(p[0] !== seg[1][0]) {
+-        lastNode = root
+-        root = root.right
+-      } else {
+-        var val = searchBucket(root.right, p)
+-        if(val) {
+-          return val
+-        }
+-        root = root.left
+-      }
+     } else {
+-      if(p[0] !== seg[1][0]) {
+-        return root
++      // IE 11 bug: WeakMaps silently fail to store frozen objects.
++      var testMap = new HostWeakMap();
++      var testObject = Object.freeze({});
++      testMap.set(testObject, 1);
++      if (testMap.get(testObject) !== 1) {
++        doubleWeakMapCheckSilentFailure = true;
++        // Fall through to installing our WeakMap.
+       } else {
+-        var val = searchBucket(root.right, p)
+-        if(val) {
+-          return val
+-        }
+-        root = root.left
+-      }
+-    }
+-  }
+-  return lastNode
+-}
+-
+-proto.castUp = function(p) {
+-  var bucket = bounds.le(this.coordinates, p[0])
+-  if(bucket < 0) {
+-    return -1
+-  }
+-  var root = this.slabs[bucket]
+-  var hitNode = searchBucket(this.slabs[bucket], p)
+-  var lastHit = -1
+-  if(hitNode) {
+-    lastHit = hitNode.value
+-  }
+-  //Edge case: need to handle horizontal segments (sucks)
+-  if(this.coordinates[bucket] === p[0]) {
+-    var lastSegment = null
+-    if(hitNode) {
+-      lastSegment = hitNode.key
+-    }
+-    if(bucket > 0) {
+-      var otherHitNode = searchBucket(this.slabs[bucket-1], p)
+-      if(otherHitNode) {
+-        if(lastSegment) {
+-          if(orderSegments(otherHitNode.key, lastSegment) > 0) {
+-            lastSegment = otherHitNode.key
+-            lastHit = otherHitNode.value
+-          }
+-        } else {
+-          lastHit = otherHitNode.value
+-          lastSegment = otherHitNode.key
+-        }
+-      }
+-    }
+-    var horiz = this.horizontal[bucket]
+-    if(horiz.length > 0) {
+-      var hbucket = bounds.ge(horiz, p[1], compareHorizontal)
+-      if(hbucket < horiz.length) {
+-        var e = horiz[hbucket]
+-        if(p[1] === e.y) {
+-          if(e.closed) {
+-            return e.index
+-          } else {
+-            while(hbucket < horiz.length-1 && horiz[hbucket+1].y === p[1]) {
+-              hbucket = hbucket+1
+-              e = horiz[hbucket]
+-              if(e.closed) {
+-                return e.index
+-              }
+-            }
+-            if(e.y === p[1] && !e.start) {
+-              hbucket = hbucket+1
+-              if(hbucket >= horiz.length) {
+-                return lastHit
+-              }
+-              e = horiz[hbucket]
+-            }
+-          }
+-        }
+-        //Check if e is above/below last segment
+-        if(e.start) {
+-          if(lastSegment) {
+-            var o = orient(lastSegment[0], lastSegment[1], [p[0], e.y])
+-            if(lastSegment[0][0] > lastSegment[1][0]) {
+-              o = -o
+-            }
+-            if(o > 0) {
+-              lastHit = e.index
+-            }
+-          } else {
+-            lastHit = e.index
+-          }
+-        } else if(e.y !== p[1]) {
+-          lastHit = e.index
+-        }
++        module.exports = WeakMap;
++        return;
+       }
+     }
+   }
+-  return lastHit
+-}
+ 
+-function IntervalSegment(y, index, start, closed) {
+-  this.y = y
+-  this.index = index
+-  this.start = start
+-  this.closed = closed
+-}
++  var hop = Object.prototype.hasOwnProperty;
++  var gopn = Object.getOwnPropertyNames;
++  var defProp = Object.defineProperty;
++  var isExtensible = Object.isExtensible;
+ 
+-function Event(x, segment, create, index) {
+-  this.x = x
+-  this.segment = segment
+-  this.create = create
+-  this.index = index
+-}
++  /**
++   * Security depends on HIDDEN_NAME being both <i>unguessable</i> and
++   * <i>undiscoverable</i> by untrusted code.
++   *
++   * <p>Given the known weaknesses of Math.random() on existing
++   * browsers, it does not generate unguessability we can be confident
++   * of.
++   *
++   * <p>It is the monkey patching logic in this file that is intended
++   * to ensure undiscoverability. The basic idea is that there are
++   * three fundamental means of discovering properties of an object:
++   * The for/in loop, Object.keys(), and Object.getOwnPropertyNames(),
++   * as well as some proposed ES6 extensions that appear on our
++   * whitelist. The first two only discover enumerable properties, and
++   * we only use HIDDEN_NAME to name a non-enumerable property, so the
++   * only remaining threat should be getOwnPropertyNames and some
++   * proposed ES6 extensions that appear on our whitelist. We monkey
++   * patch them to remove HIDDEN_NAME from the list of properties they
++   * returns.
++   *
++   * <p>TODO(erights): On a platform with built-in Proxies, proxies
++   * could be used to trap and thereby discover the HIDDEN_NAME, so we
++   * need to monkey patch Proxy.create, Proxy.createFunction, etc, in
++   * order to wrap the provided handler with the real handler which
++   * filters out all traps using HIDDEN_NAME.
++   *
++   * <p>TODO(erights): Revisit Mike Stay's suggestion that we use an
++   * encapsulated function at a not-necessarily-secret name, which
++   * uses the Stiegler shared-state rights amplification pattern to
++   * reveal the associated value only to the WeakMap in which this key
++   * is associated with that value. Since only the key retains the
++   * function, the function can also remember the key without causing
++   * leakage of the key, so this doesn't violate our general gc
++   * goals. In addition, because the name need not be a guarded
++   * secret, we could efficiently handle cross-frame frozen keys.
++   */
++  var HIDDEN_NAME_PREFIX = 'weakmap:';
++  var HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'ident:' + Math.random() + '___';
+ 
++  if (typeof crypto !== 'undefined' &&
++      typeof crypto.getRandomValues === 'function' &&
++      typeof ArrayBuffer === 'function' &&
++      typeof Uint8Array === 'function') {
++    var ab = new ArrayBuffer(25);
++    var u8s = new Uint8Array(ab);
++    crypto.getRandomValues(u8s);
++    HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'rand:' +
++      Array.prototype.map.call(u8s, function(u8) {
++        return (u8 % 36).toString(36);
++      }).join('') + '___';
++  }
+ 
+-function createSlabDecomposition(segments) {
+-  var numSegments = segments.length
+-  var numEvents = 2 * numSegments
+-  var events = new Array(numEvents)
+-  for(var i=0; i<numSegments; ++i) {
+-    var s = segments[i]
+-    var f = s[0][0] < s[1][0]
+-    events[2*i] = new Event(s[0][0], s, f, i)
+-    events[2*i+1] = new Event(s[1][0], s, !f, i)
++  function isNotHiddenName(name) {
++    return !(
++        name.substr(0, HIDDEN_NAME_PREFIX.length) == HIDDEN_NAME_PREFIX &&
++        name.substr(name.length - 3) === '___');
+   }
+-  events.sort(function(a,b) {
+-    var d = a.x - b.x
+-    if(d) {
+-      return d
+-    }
+-    d = a.create - b.create
+-    if(d) {
+-      return d
++
++  /**
++   * Monkey patch getOwnPropertyNames to avoid revealing the
++   * HIDDEN_NAME.
++   *
++   * <p>The ES5.1 spec requires each name to appear only once, but as
++   * of this writing, this requirement is controversial for ES6, so we
++   * made this code robust against this case. If the resulting extra
++   * search turns out to be expensive, we can probably relax this once
++   * ES6 is adequately supported on all major browsers, iff no browser
++   * versions we support at that time have relaxed this constraint
++   * without providing built-in ES6 WeakMaps.
++   */
++  defProp(Object, 'getOwnPropertyNames', {
++    value: function fakeGetOwnPropertyNames(obj) {
++      return gopn(obj).filter(isNotHiddenName);
+     }
+-    return Math.min(a.segment[0][1], a.segment[1][1]) - Math.min(b.segment[0][1], b.segment[1][1])
+-  })
+-  var tree = createRBTree(orderSegments)
+-  var slabs = []
+-  var lines = []
+-  var horizontal = []
+-  var lastX = -Infinity
+-  for(var i=0; i<numEvents; ) {
+-    var x = events[i].x
+-    var horiz = []
+-    while(i < numEvents) {
+-      var e = events[i]
+-      if(e.x !== x) {
+-        break
+-      }
+-      i += 1
+-      if(e.segment[0][0] === e.x && e.segment[1][0] === e.x) {
+-        if(e.create) {
+-          if(e.segment[0][1] < e.segment[1][1]) {
+-            horiz.push(new IntervalSegment(
+-                e.segment[0][1],
+-                e.index,
+-                true,
+-                true))
+-            horiz.push(new IntervalSegment(
+-                e.segment[1][1],
+-                e.index,
+-                false,
+-                false))
+-          } else {
+-            horiz.push(new IntervalSegment(
+-                e.segment[1][1],
+-                e.index,
+-                true,
+-                false))
+-            horiz.push(new IntervalSegment(
+-                e.segment[0][1],
+-                e.index,
+-                false,
+-                true))
+-          }
+-        }
+-      } else {
+-        if(e.create) {
+-          tree = tree.insert(e.segment, e.index)
+-        } else {
+-          tree = tree.remove(e.segment)
+-        }
++  });
++
++  /**
++   * getPropertyNames is not in ES5 but it is proposed for ES6 and
++   * does appear in our whitelist, so we need to clean it too.
++   */
++  if ('getPropertyNames' in Object) {
++    var originalGetPropertyNames = Object.getPropertyNames;
++    defProp(Object, 'getPropertyNames', {
++      value: function fakeGetPropertyNames(obj) {
++        return originalGetPropertyNames(obj).filter(isNotHiddenName);
+       }
+-    }
+-    slabs.push(tree.root)
+-    lines.push(x)
+-    horizontal.push(horiz)
++    });
+   }
+-  return new SlabDecomposition(slabs, lines, horizontal)
+-}
+-},{"./lib/order-segments":470,"binary-search-bounds":468,"functional-red-black-tree":471,"robust-orientation":439}],473:[function(require,module,exports){
+-module.exports = preprocessPolygon
+ 
+-var orient = require('robust-orientation')[3]
+-var makeSlabs = require('slab-decomposition')
+-var makeIntervalTree = require('interval-tree-1d')
+-var bsearch = require('binary-search-bounds')
++  /**
++   * <p>To treat objects as identity-keys with reasonable efficiency
++   * on ES5 by itself (i.e., without any object-keyed collections), we
++   * need to add a hidden property to such key objects when we
++   * can. This raises several issues:
++   * <ul>
++   * <li>Arranging to add this property to objects before we lose the
++   *     chance, and
++   * <li>Hiding the existence of this new property from most
++   *     JavaScript code.
++   * <li>Preventing <i>certification theft</i>, where one object is
++   *     created falsely claiming to be the key of an association
++   *     actually keyed by another object.
++   * <li>Preventing <i>value theft</i>, where untrusted code with
++   *     access to a key object but not a weak map nevertheless
++   *     obtains access to the value associated with that key in that
++   *     weak map.
++   * </ul>
++   * We do so by
++   * <ul>
++   * <li>Making the name of the hidden property unguessable, so "[]"
++   *     indexing, which we cannot intercept, cannot be used to access
++   *     a property without knowing the name.
++   * <li>Making the hidden property non-enumerable, so we need not
++   *     worry about for-in loops or {@code Object.keys},
++   * <li>monkey patching those reflective methods that would
++   *     prevent extensions, to add this hidden property first,
++   * <li>monkey patching those methods that would reveal this
++   *     hidden property.
++   * </ul>
++   * Unfortunately, because of same-origin iframes, we cannot reliably
++   * add this hidden property before an object becomes
++   * non-extensible. Instead, if we encounter a non-extensible object
++   * without a hidden record that we can detect (whether or not it has
++   * a hidden record stored under a name secret to us), then we just
++   * use the key object itself to represent its identity in a brute
++   * force leaky map stored in the weak map, losing all the advantages
++   * of weakness for these.
++   */
++  function getHiddenRecord(key) {
++    if (key !== Object(key)) {
++      throw new TypeError('Not an object: ' + key);
++    }
++    var hiddenRecord = key[HIDDEN_NAME];
++    if (hiddenRecord && hiddenRecord.key === key) { return hiddenRecord; }
++    if (!isExtensible(key)) {
++      // Weak map must brute force, as explained in doc-comment above.
++      return void 0;
++    }
+ 
+-function visitInterval() {
+-  return true
+-}
++    // The hiddenRecord and the key point directly at each other, via
++    // the "key" and HIDDEN_NAME properties respectively. The key
++    // field is for quickly verifying that this hidden record is an
++    // own property, not a hidden record from up the prototype chain.
++    //
++    // NOTE: Because this WeakMap emulation is meant only for systems like
++    // SES where Object.prototype is frozen without any numeric
++    // properties, it is ok to use an object literal for the hiddenRecord.
++    // This has two advantages:
++    // * It is much faster in a performance critical place
++    // * It avoids relying on Object.create(null), which had been
++    //   problematic on Chrome 28.0.1480.0. See
++    //   https://code.google.com/p/google-caja/issues/detail?id=1687
++    hiddenRecord = { key: key };
+ 
+-function intervalSearch(table) {
+-  return function(x, y) {
+-    var tree = table[x]
+-    if(tree) {
+-      return !!tree.queryPoint(y, visitInterval)
+-    }
+-    return false
+-  }
+-}
++    // When using this WeakMap emulation on platforms where
++    // Object.prototype might not be frozen and Object.create(null) is
++    // reliable, use the following two commented out lines instead.
++    // hiddenRecord = Object.create(null);
++    // hiddenRecord.key = key;
+ 
+-function buildVerticalIndex(segments) {
+-  var table = {}
+-  for(var i=0; i<segments.length; ++i) {
+-    var s = segments[i]
+-    var x = s[0][0]
+-    var y0 = s[0][1]
+-    var y1 = s[1][1]
+-    var p = [ Math.min(y0, y1), Math.max(y0, y1) ]
+-    if(x in table) {
+-      table[x].push(p)
+-    } else {
+-      table[x] = [ p ]
+-    }
+-  }
+-  var intervalTable = {}
+-  var keys = Object.keys(table)
+-  for(var i=0; i<keys.length; ++i) {
+-    var segs = table[keys[i]]
+-    intervalTable[keys[i]] = makeIntervalTree(segs)
+-  }
+-  return intervalSearch(intervalTable)
+-}
++    // Please contact us if you need this to work on platforms where
++    // Object.prototype might not be frozen and
++    // Object.create(null) might not be reliable.
+ 
+-function buildSlabSearch(slabs, coordinates) {
+-  return function(p) {
+-    var bucket = bsearch.le(coordinates, p[0])
+-    if(bucket < 0) {
+-      return 1
+-    }
+-    var root = slabs[bucket]
+-    if(!root) {
+-      if(bucket > 0 && coordinates[bucket] === p[0]) {
+-        root = slabs[bucket-1]
+-      } else {
+-        return 1
+-      }
+-    }
+-    var lastOrientation = 1
+-    while(root) {
+-      var s = root.key
+-      var o = orient(p, s[0], s[1])
+-      if(s[0][0] < s[1][0]) {
+-        if(o < 0) {
+-          root = root.left
+-        } else if(o > 0) {
+-          lastOrientation = -1
+-          root = root.right
+-        } else {
+-          return 0
+-        }
+-      } else {
+-        if(o > 0) {
+-          root = root.left
+-        } else if(o < 0) {
+-          lastOrientation = 1
+-          root = root.right
+-        } else {
+-          return 0
+-        }
+-      }
++    try {
++      defProp(key, HIDDEN_NAME, {
++        value: hiddenRecord,
++        writable: false,
++        enumerable: false,
++        configurable: false
++      });
++      return hiddenRecord;
++    } catch (error) {
++      // Under some circumstances, isExtensible seems to misreport whether
++      // the HIDDEN_NAME can be defined.
++      // The circumstances have not been isolated, but at least affect
++      // Node.js v0.10.26 on TravisCI / Linux, but not the same version of
++      // Node.js on OS X.
++      return void 0;
+     }
+-    return lastOrientation
+   }
+-}
+ 
+-function classifyEmpty(p) {
+-  return 1
+-}
++  /**
++   * Monkey patch operations that would make their argument
++   * non-extensible.
++   *
++   * <p>The monkey patched versions throw a TypeError if their
++   * argument is not an object, so it should only be done to functions
++   * that should throw a TypeError anyway if their argument is not an
++   * object.
++   */
++  (function(){
++    var oldFreeze = Object.freeze;
++    defProp(Object, 'freeze', {
++      value: function identifyingFreeze(obj) {
++        getHiddenRecord(obj);
++        return oldFreeze(obj);
++      }
++    });
++    var oldSeal = Object.seal;
++    defProp(Object, 'seal', {
++      value: function identifyingSeal(obj) {
++        getHiddenRecord(obj);
++        return oldSeal(obj);
++      }
++    });
++    var oldPreventExtensions = Object.preventExtensions;
++    defProp(Object, 'preventExtensions', {
++      value: function identifyingPreventExtensions(obj) {
++        getHiddenRecord(obj);
++        return oldPreventExtensions(obj);
++      }
++    });
++  })();
+ 
+-function createClassifyVertical(testVertical) {
+-  return function classify(p) {
+-    if(testVertical(p[0], p[1])) {
+-      return 0
+-    }
+-    return 1
++  function constFunc(func) {
++    func.prototype = null;
++    return Object.freeze(func);
+   }
+-}
+ 
+-function createClassifyPointDegen(testVertical, testNormal) {
+-  return function classify(p) {
+-    if(testVertical(p[0], p[1])) {
+-      return 0
++  var calledAsFunctionWarningDone = false;
++  function calledAsFunctionWarning() {
++    // Future ES6 WeakMap is currently (2013-09-10) expected to reject WeakMap()
++    // but we used to permit it and do it ourselves, so warn only.
++    if (!calledAsFunctionWarningDone && typeof console !== 'undefined') {
++      calledAsFunctionWarningDone = true;
++      console.warn('WeakMap should be invoked as new WeakMap(), not ' +
++          'WeakMap(). This will be an error in the future.');
+     }
+-    return testNormal(p)
+   }
+-}
+ 
+-function preprocessPolygon(loops) {
+-  //Compute number of loops
+-  var numLoops = loops.length
++  var nextId = 0;
+ 
+-  //Unpack segments
+-  var segments = []
+-  var vsegments = []
+-  var ptr = 0
+-  for(var i=0; i<numLoops; ++i) {
+-    var loop = loops[i]
+-    var numVertices = loop.length
+-    for(var s=numVertices-1,t=0; t<numVertices; s=(t++)) {
+-      var a = loop[s]
+-      var b = loop[t]
+-      if(a[0] === b[0]) {
+-        vsegments.push([a,b])
++  var OurWeakMap = function() {
++    if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
++      calledAsFunctionWarning();
++    }
++
++    // We are currently (12/25/2012) never encountering any prematurely
++    // non-extensible keys.
++    var keys = []; // brute force for prematurely non-extensible keys.
++    var values = []; // brute force for corresponding values.
++    var id = nextId++;
++
++    function get___(key, opt_default) {
++      var index;
++      var hiddenRecord = getHiddenRecord(key);
++      if (hiddenRecord) {
++        return id in hiddenRecord ? hiddenRecord[id] : opt_default;
+       } else {
+-        segments.push([a,b])
++        index = keys.indexOf(key);
++        return index >= 0 ? values[index] : opt_default;
+       }
+     }
+-  }
+ 
+-  //Degenerate case: All loops are empty
+-  if(segments.length === 0) {
+-    if(vsegments.length === 0) {
+-      return classifyEmpty
+-    } else {
+-      return createClassifyVertical(buildVerticalIndex(vsegments))
++    function has___(key) {
++      var hiddenRecord = getHiddenRecord(key);
++      if (hiddenRecord) {
++        return id in hiddenRecord;
++      } else {
++        return keys.indexOf(key) >= 0;
++      }
+     }
+-  }
+-
+-  //Build slab decomposition
+-  var slabs = makeSlabs(segments)
+-  var testSlab = buildSlabSearch(slabs.slabs, slabs.coordinates)
+ 
+-  if(vsegments.length === 0) {
+-    return testSlab
+-  } else {
+-    return createClassifyPointDegen(
+-      buildVerticalIndex(vsegments),
+-      testSlab)
+-  }
+-}
+-},{"binary-search-bounds":468,"interval-tree-1d":469,"robust-orientation":439,"slab-decomposition":472}],474:[function(require,module,exports){
+-'use strict'
++    function set___(key, value) {
++      var index;
++      var hiddenRecord = getHiddenRecord(key);
++      if (hiddenRecord) {
++        hiddenRecord[id] = value;
++      } else {
++        index = keys.indexOf(key);
++        if (index >= 0) {
++          values[index] = value;
++        } else {
++          // Since some browsers preemptively terminate slow turns but
++          // then continue computing with presumably corrupted heap
++          // state, we here defensively get keys.length first and then
++          // use it to update both the values and keys arrays, keeping
++          // them in sync.
++          index = keys.length;
++          values[index] = value;
++          // If we crash here, values will be one longer than keys.
++          keys[index] = key;
++        }
++      }
++      return this;
++    }
+ 
+-module.exports = planarGraphToPolyline
++    function delete___(key) {
++      var hiddenRecord = getHiddenRecord(key);
++      var index, lastIndex;
++      if (hiddenRecord) {
++        return id in hiddenRecord && delete hiddenRecord[id];
++      } else {
++        index = keys.indexOf(key);
++        if (index < 0) {
++          return false;
++        }
++        // Since some browsers preemptively terminate slow turns but
++        // then continue computing with potentially corrupted heap
++        // state, we here defensively get keys.length first and then use
++        // it to update both the keys and the values array, keeping
++        // them in sync. We update the two with an order of assignments,
++        // such that any prefix of these assignments will preserve the
++        // key/value correspondence, either before or after the delete.
++        // Note that this needs to work correctly when index === lastIndex.
++        lastIndex = keys.length - 1;
++        keys[index] = void 0;
++        // If we crash here, there's a void 0 in the keys array, but
++        // no operation will cause a "keys.indexOf(void 0)", since
++        // getHiddenRecord(void 0) will always throw an error first.
++        values[index] = values[lastIndex];
++        // If we crash here, values[index] cannot be found here,
++        // because keys[index] is void 0.
++        keys[index] = keys[lastIndex];
++        // If index === lastIndex and we crash here, then keys[index]
++        // is still void 0, since the aliasing killed the previous key.
++        keys.length = lastIndex;
++        // If we crash here, keys will be one shorter than values.
++        values.length = lastIndex;
++        return true;
++      }
++    }
+ 
+-var e2a = require('edges-to-adjacency-list')
+-var planarDual = require('planar-dual')
+-var preprocessPolygon = require('point-in-big-polygon')
+-var twoProduct = require('two-product')
+-var robustSum = require('robust-sum')
+-var uniq = require('uniq')
+-var trimLeaves = require('./lib/trim-leaves')
++    return Object.create(OurWeakMap.prototype, {
++      get___:    { value: constFunc(get___) },
++      has___:    { value: constFunc(has___) },
++      set___:    { value: constFunc(set___) },
++      delete___: { value: constFunc(delete___) }
++    });
++  };
+ 
+-function makeArray(length, fill) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = fill
+-  }
+-  return result
+-}
++  OurWeakMap.prototype = Object.create(Object.prototype, {
++    get: {
++      /**
++       * Return the value most recently associated with key, or
++       * opt_default if none.
++       */
++      value: function get(key, opt_default) {
++        return this.get___(key, opt_default);
++      },
++      writable: true,
++      configurable: true
++    },
+ 
+-function makeArrayOfArrays(length) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = []
+-  }
+-  return result
+-}
++    has: {
++      /**
++       * Is there a value associated with key in this WeakMap?
++       */
++      value: function has(key) {
++        return this.has___(key);
++      },
++      writable: true,
++      configurable: true
++    },
+ 
++    set: {
++      /**
++       * Associate value with key in this WeakMap, overwriting any
++       * previous association if present.
++       */
++      value: function set(key, value) {
++        return this.set___(key, value);
++      },
++      writable: true,
++      configurable: true
++    },
+ 
+-function planarGraphToPolyline(edges, positions) {
++    'delete': {
++      /**
++       * Remove any association for key in this WeakMap, returning
++       * whether there was one.
++       *
++       * <p>Note that the boolean return here does not work like the
++       * {@code delete} operator. The {@code delete} operator returns
++       * whether the deletion succeeds at bringing about a state in
++       * which the deleted property is absent. The {@code delete}
++       * operator therefore returns true if the property was already
++       * absent, whereas this {@code delete} method returns false if
++       * the association was already absent.
++       */
++      value: function remove(key) {
++        return this.delete___(key);
++      },
++      writable: true,
++      configurable: true
++    }
++  });
+ 
+-  //Trim leaves
+-  var result = trimLeaves(edges, positions)
+-  edges = result[0]
+-  positions = result[1]
++  if (typeof HostWeakMap === 'function') {
++    (function() {
++      // If we got here, then the platform has a WeakMap but we are concerned
++      // that it may refuse to store some key types. Therefore, make a map
++      // implementation which makes use of both as possible.
+ 
+-  var numVertices = positions.length
+-  var numEdges = edges.length
++      // In this mode we are always using double maps, so we are not proxy-safe.
++      // This combination does not occur in any known browser, but we had best
++      // be safe.
++      if (doubleWeakMapCheckSilentFailure && typeof Proxy !== 'undefined') {
++        Proxy = undefined;
++      }
+ 
+-  //Calculate adjacency list, check manifold
+-  var adj = e2a(edges, positions.length)
+-  for(var i=0; i<numVertices; ++i) {
+-    if(adj[i].length % 2 === 1) {
+-      throw new Error('planar-graph-to-polyline: graph must be manifold')
+-    }
+-  }
++      function DoubleWeakMap() {
++        if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
++          calledAsFunctionWarning();
++        }
+ 
+-  //Get faces
+-  var faces = planarDual(edges, positions)
++        // Preferable, truly weak map.
++        var hmap = new HostWeakMap();
+ 
+-  //Check orientation of a polygon using exact arithmetic
+-  function ccw(c) {
+-    var n = c.length
+-    var area = [0]
+-    for(var j=0; j<n; ++j) {
+-      var a = positions[c[j]]
+-      var b = positions[c[(j+1)%n]]
+-      var t00 = twoProduct(-a[0], a[1])
+-      var t01 = twoProduct(-a[0], b[1])
+-      var t10 = twoProduct( b[0], a[1])
+-      var t11 = twoProduct( b[0], b[1])
+-      area = robustSum(area, robustSum(robustSum(t00, t01), robustSum(t10, t11)))
+-    }
+-    return area[area.length-1] > 0
+-  }
++        // Our hidden-property-based pseudo-weak-map. Lazily initialized in the
++        // 'set' implementation; thus we can avoid performing extra lookups if
++        // we know all entries actually stored are entered in 'hmap'.
++        var omap = undefined;
+ 
+-  //Extract all clockwise faces
+-  faces = faces.filter(ccw)
++        // Hidden-property maps are not compatible with proxies because proxies
++        // can observe the hidden name and either accidentally expose it or fail
++        // to allow the hidden property to be set. Therefore, we do not allow
++        // arbitrary WeakMaps to switch to using hidden properties, but only
++        // those which need the ability, and unprivileged code is not allowed
++        // to set the flag.
++        //
++        // (Except in doubleWeakMapCheckSilentFailure mode in which case we
++        // disable proxies.)
++        var enableSwitching = false;
+ 
+-  //Detect which loops are contained in one another to handle parent-of relation
+-  var numFaces = faces.length
+-  var parent = new Array(numFaces)
+-  var containment = new Array(numFaces)
+-  for(var i=0; i<numFaces; ++i) {
+-    parent[i] = i
+-    var row = new Array(numFaces)
+-    var loopVertices = faces[i].map(function(v) {
+-      return positions[v]
+-    })
+-    var pmc = preprocessPolygon([loopVertices])
+-    var count = 0
+-    outer:
+-    for(var j=0; j<numFaces; ++j) {
+-      row[j] = 0
+-      if(i === j) {
+-        continue
+-      }
+-      var c = faces[j]
+-      var n = c.length
+-      for(var k=0; k<n; ++k) {
+-        var d = pmc(positions[c[k]])
+-        if(d !== 0) {
+-          if(d < 0) {
+-            row[j] = 1
+-            count += 1
++        function dget(key, opt_default) {
++          if (omap) {
++            return hmap.has(key) ? hmap.get(key)
++                : omap.get___(key, opt_default);
++          } else {
++            return hmap.get(key, opt_default);
+           }
+-          continue outer
+         }
+-      }
+-      row[j] = 1
+-      count += 1
+-    }
+-    containment[i] = [count, i, row]
+-  }
+-  containment.sort(function(a,b) {
+-    return b[0] - a[0]
+-  })
+-  for(var i=0; i<numFaces; ++i) {
+-    var row = containment[i]
+-    var idx = row[1]
+-    var children = row[2]
+-    for(var j=0; j<numFaces; ++j) {
+-      if(children[j]) {
+-        parent[j] = idx
+-      }
+-    }
+-  }
+-
+-  //Initialize face adjacency list
+-  var fadj = makeArrayOfArrays(numFaces)
+-  for(var i=0; i<numFaces; ++i) {
+-    fadj[i].push(parent[i])
+-    fadj[parent[i]].push(i)
+-  }
+-
+-  //Build adjacency matrix for edges
+-  var edgeAdjacency = {}
+-  var internalVertices = makeArray(numVertices, false)
+-  for(var i=0; i<numFaces; ++i) {
+-    var c = faces[i]
+-    var n = c.length
+-    for(var j=0; j<n; ++j) {
+-      var a = c[j]
+-      var b = c[(j+1)%n]
+-      var key = Math.min(a,b) + ":" + Math.max(a,b)
+-      if(key in edgeAdjacency) {
+-        var neighbor = edgeAdjacency[key]
+-        fadj[neighbor].push(i)
+-        fadj[i].push(neighbor)
+-        internalVertices[a] = internalVertices[b] = true
+-      } else {
+-        edgeAdjacency[key] = i
+-      }
+-    }
+-  }
+ 
+-  function sharedBoundary(c) {
+-    var n = c.length
+-    for(var i=0; i<n; ++i) {
+-      if(!internalVertices[c[i]]) {
+-        return false
+-      }
+-    }
+-    return true
+-  }
++        function dhas(key) {
++          return hmap.has(key) || (omap ? omap.has___(key) : false);
++        }
+ 
+-  var toVisit = []
+-  var parity = makeArray(numFaces, -1)
+-  for(var i=0; i<numFaces; ++i) {
+-    if(parent[i] === i && !sharedBoundary(faces[i])) {
+-      toVisit.push(i)
+-      parity[i] = 0
+-    } else {
+-      parity[i] = -1
+-    }
+-  }
++        var dset;
++        if (doubleWeakMapCheckSilentFailure) {
++          dset = function(key, value) {
++            hmap.set(key, value);
++            if (!hmap.has(key)) {
++              if (!omap) { omap = new OurWeakMap(); }
++              omap.set(key, value);
++            }
++            return this;
++          };
++        } else {
++          dset = function(key, value) {
++            if (enableSwitching) {
++              try {
++                hmap.set(key, value);
++              } catch (e) {
++                if (!omap) { omap = new OurWeakMap(); }
++                omap.set___(key, value);
++              }
++            } else {
++              hmap.set(key, value);
++            }
++            return this;
++          };
++        }
+ 
+-  //Using face adjacency, classify faces as in/out
+-  var result = []
+-  while(toVisit.length > 0) {
+-    var top = toVisit.pop()
+-    var nbhd = fadj[top]
+-    uniq(nbhd, function(a,b) {
+-      return a-b
+-    })
+-    var nnbhr = nbhd.length
+-    var p = parity[top]
+-    var polyline
+-    if(p === 0) {
+-      var c = faces[top]
+-      polyline = [c]
+-    }
+-    for(var i=0; i<nnbhr; ++i) {
+-      var f = nbhd[i]
+-      if(parity[f] >= 0) {
+-        continue
+-      }
+-      parity[f] = p^1
+-      toVisit.push(f)
+-      if(p === 0) {
+-        var c = faces[f]
+-        if(!sharedBoundary(c)) {
+-          c.reverse()
+-          polyline.push(c)
++        function ddelete(key) {
++          var result = !!hmap['delete'](key);
++          if (omap) { return omap.delete___(key) || result; }
++          return result;
+         }
++
++        return Object.create(OurWeakMap.prototype, {
++          get___:    { value: constFunc(dget) },
++          has___:    { value: constFunc(dhas) },
++          set___:    { value: constFunc(dset) },
++          delete___: { value: constFunc(ddelete) },
++          permitHostObjects___: { value: constFunc(function(token) {
++            if (token === weakMapPermitHostObjects) {
++              enableSwitching = true;
++            } else {
++              throw new Error('bogus call to permitHostObjects___');
++            }
++          })}
++        });
+       }
+-    }
+-    if(p === 0) {
+-      result.push(polyline)
+-    }
+-  }
++      DoubleWeakMap.prototype = OurWeakMap.prototype;
++      module.exports = DoubleWeakMap;
+ 
+-  return result
+-}
+-},{"./lib/trim-leaves":462,"edges-to-adjacency-list":463,"planar-dual":464,"point-in-big-polygon":473,"robust-sum":442,"two-product":456,"uniq":459}],475:[function(require,module,exports){
+-arguments[4][51][0].apply(exports,arguments)
+-},{"dup":51}],476:[function(require,module,exports){
+-"use strict"; "use restrict";
++      // define .constructor to hide OurWeakMap ctor
++      Object.defineProperty(WeakMap.prototype, 'constructor', {
++        value: WeakMap,
++        enumerable: false,  // as default .constructor is
++        configurable: true,
++        writable: true
++      });
++    })();
++  } else {
++    // There is no host WeakMap, so we must use the emulation.
+ 
+-module.exports = UnionFind;
++    // Emulated WeakMaps are incompatible with native proxies (because proxies
++    // can observe the hidden name), so we must disable Proxy usage (in
++    // ArrayLike and Domado, currently).
++    if (typeof Proxy !== 'undefined') {
++      Proxy = undefined;
++    }
+ 
+-function UnionFind(count) {
+-  this.roots = new Array(count);
+-  this.ranks = new Array(count);
+-  
+-  for(var i=0; i<count; ++i) {
+-    this.roots[i] = i;
+-    this.ranks[i] = 0;
++    module.exports = OurWeakMap;
+   }
+-}
++})();
+ 
+-UnionFind.prototype.length = function() {
+-  return this.roots.length;
+-}
++},{}],466:[function(require,module,exports){
++var hiddenStore = require('./hidden-store.js');
+ 
+-UnionFind.prototype.makeSet = function() {
+-  var n = this.roots.length;
+-  this.roots.push(n);
+-  this.ranks.push(0);
+-  return n;
+-}
++module.exports = createStore;
+ 
+-UnionFind.prototype.find = function(x) {
+-  var roots = this.roots;
+-  while(roots[x] !== x) {
+-    var y = roots[x];
+-    roots[x] = roots[y];
+-    x = y;
+-  }
+-  return x;
+-}
++function createStore() {
++    var key = {};
+ 
+-UnionFind.prototype.link = function(x, y) {
+-  var xr = this.find(x)
+-    , yr = this.find(y);
+-  if(xr === yr) {
+-    return;
+-  }
+-  var ranks = this.ranks
+-    , roots = this.roots
+-    , xd    = ranks[xr]
+-    , yd    = ranks[yr];
+-  if(xd < yd) {
+-    roots[xr] = yr;
+-  } else if(yd < xd) {
+-    roots[yr] = xr;
+-  } else {
+-    roots[yr] = xr;
+-    ++ranks[xr];
+-  }
+-}
++    return function (obj) {
++        if ((typeof obj !== 'object' || obj === null) &&
++            typeof obj !== 'function'
++        ) {
++            throw new Error('Weakmap-shim: Key must be object')
++        }
+ 
++        var store = obj.valueOf(key);
++        return store && store.identity === key ?
++            store : hiddenStore(obj, key);
++    };
++}
+ 
+-},{}],477:[function(require,module,exports){
+-arguments[4][244][0].apply(exports,arguments)
+-},{"bit-twiddle":475,"dup":244,"union-find":476}],478:[function(require,module,exports){
+-"use strict"
++},{"./hidden-store.js":467}],467:[function(require,module,exports){
++module.exports = hiddenStore;
+ 
+-module.exports = simplifyPolygon
++function hiddenStore(obj, key) {
++    var store = { identity: key };
++    var valueOf = obj.valueOf;
+ 
+-var orient = require("robust-orientation")
+-var sc = require("simplicial-complex")
++    Object.defineProperty(obj, "valueOf", {
++        value: function (value) {
++            return value !== key ?
++                valueOf.apply(this, arguments) : store;
++        },
++        writable: true
++    });
+ 
+-function errorWeight(base, a, b) {
+-  var area = Math.abs(orient(base, a, b))
+-  var perim = Math.sqrt(Math.pow(a[0] - b[0], 2) + Math.pow(a[1]-b[1], 2))
+-  return area / perim
++    return store;
+ }
+ 
+-function simplifyPolygon(cells, positions, minArea) {
++},{}],468:[function(require,module,exports){
++// Original - @Gozola. 
++// https://gist.github.com/Gozala/1269991
++// This is a reimplemented version (with a few bug fixes).
+ 
+-  var n = positions.length
+-  var nc = cells.length
+-  var inv = new Array(n)
+-  var outv = new Array(n)
+-  var weights = new Array(n)
+-  var dead = new Array(n)
+-  
+-  //Initialize tables
+-  for(var i=0; i<n; ++i) {
+-    inv[i] = outv[i] = -1
+-    weights[i] = Infinity
+-    dead[i] = false
+-  }
++var createStore = require('./create-store.js');
+ 
+-  //Compute neighbors
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    if(c.length !== 2) {
+-      throw new Error("Input must be a graph")
+-    }
+-    var s = c[1]
+-    var t = c[0]
+-    if(outv[t] !== -1) {
+-      outv[t] = -2
+-    } else {
+-      outv[t] = s
+-    }
+-    if(inv[s] !== -1) {
+-      inv[s] = -2
+-    } else {
+-      inv[s] = t
+-    }
+-  }
++module.exports = weakMap;
+ 
+-  //Updates the weight for vertex i
+-  function computeWeight(i) {
+-    if(dead[i]) {
+-      return Infinity
+-    }
+-    //TODO: Check that the line segment doesn't cross once simplified
+-    var s = inv[i]
+-    var t = outv[i]
+-    if((s<0) || (t<0)) {
+-      return Infinity
+-    } else {
+-      return errorWeight(positions[i], positions[s], positions[t])
++function weakMap() {
++    var privates = createStore();
++
++    return {
++        'get': function (key, fallback) {
++            var store = privates(key)
++            return store.hasOwnProperty('value') ?
++                store.value : fallback
++        },
++        'set': function (key, value) {
++            privates(key).value = value;
++        },
++        'has': function(key) {
++            return 'value' in privates(key);
++        },
++        'delete': function (key) {
++            return delete privates(key).value;
++        }
+     }
+-  }
++}
+ 
+-  //Swaps two nodes on the heap (i,j) are the index of the nodes
+-  function heapSwap(i,j) {
+-    var a = heap[i]
+-    var b = heap[j]
+-    heap[i] = b
+-    heap[j] = a
+-    index[a] = j
+-    index[b] = i
+-  }
++},{"./create-store.js":466}],469:[function(require,module,exports){
++var bundleFn = arguments[3];
++var sources = arguments[4];
++var cache = arguments[5];
+ 
+-  //Returns the weight of node i on the heap
+-  function heapWeight(i) {
+-    return weights[heap[i]]
+-  }
++var stringify = JSON.stringify;
+ 
+-  function heapParent(i) {
+-    if(i & 1) {
+-      return (i - 1) >> 1
+-    }
+-    return (i >> 1) - 1
+-  }
++module.exports = function (fn, options) {
++    var wkey;
++    var cacheKeys = Object.keys(cache);
+ 
+-  //Bubble element i down the heap
+-  function heapDown(i) {
+-    var w = heapWeight(i)
+-    while(true) {
+-      var tw = w
+-      var left  = 2*i + 1
+-      var right = 2*(i + 1)
+-      var next = i
+-      if(left < heapCount) {
+-        var lw = heapWeight(left)
+-        if(lw < tw) {
+-          next = left
+-          tw = lw
+-        }
+-      }
+-      if(right < heapCount) {
+-        var rw = heapWeight(right)
+-        if(rw < tw) {
+-          next = right
++    for (var i = 0, l = cacheKeys.length; i < l; i++) {
++        var key = cacheKeys[i];
++        var exp = cache[key].exports;
++        // Using babel as a transpiler to use esmodule, the export will always
++        // be an object with the default export as a property of it. To ensure
++        // the existing api and babel esmodule exports are both supported we
++        // check for both
++        if (exp === fn || exp && exp.default === fn) {
++            wkey = key;
++            break;
+         }
+-      }
+-      if(next === i) {
+-        return i
+-      }
+-      heapSwap(i, next)
+-      i = next      
+     }
+-  }
+ 
+-  //Bubbles element i up the heap
+-  function heapUp(i) {
+-    var w = heapWeight(i)
+-    while(i > 0) {
+-      var parent = heapParent(i)
+-      if(parent >= 0) {
+-        var pw = heapWeight(parent)
+-        if(w < pw) {
+-          heapSwap(i, parent)
+-          i = parent
+-          continue
++    if (!wkey) {
++        wkey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
++        var wcache = {};
++        for (var i = 0, l = cacheKeys.length; i < l; i++) {
++            var key = cacheKeys[i];
++            wcache[key] = key;
+         }
+-      }
+-      return i
++        sources[wkey] = [
++            Function(['require','module','exports'], '(' + fn + ')(self)'),
++            wcache
++        ];
+     }
+-  }
++    var skey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
+ 
+-  //Pop minimum element
+-  function heapPop() {
+-    if(heapCount > 0) {
+-      var head = heap[0]
+-      heapSwap(0, heapCount-1)
+-      heapCount -= 1
+-      heapDown(0)
+-      return head
+-    }
+-    return -1
+-  }
++    var scache = {}; scache[wkey] = wkey;
++    sources[skey] = [
++        Function(['require'], (
++            // try to call default if defined to also support babel esmodule
++            // exports
++            'var f = require(' + stringify(wkey) + ');' +
++            '(f.default ? f.default : f)(self);'
++        )),
++        scache
++    ];
+ 
+-  //Update heap item i
+-  function heapUpdate(i, w) {
+-    var a = heap[i]
+-    if(weights[a] === w) {
+-      return i
+-    }
+-    weights[a] = -Infinity
+-    heapUp(i)
+-    heapPop()
+-    weights[a] = w
+-    heapCount += 1
+-    return heapUp(heapCount-1)
+-  }
++    var workerSources = {};
++    resolveSources(skey);
+ 
+-  //Kills a vertex (assume vertex already removed from heap)
+-  function kill(i) {
+-    if(dead[i]) {
+-      return
+-    }
+-    //Kill vertex
+-    dead[i] = true
+-    //Fixup topology
+-    var s = inv[i]
+-    var t = outv[i]
+-    if(inv[t] >= 0) {
+-      inv[t] = s
+-    }
+-    if(outv[s] >= 0) {
+-      outv[s] = t
+-    }
++    function resolveSources(key) {
++        workerSources[key] = true;
+ 
+-    //Update weights on s and t
+-    if(index[s] >= 0) {
+-      heapUpdate(index[s], computeWeight(s))
+-    }
+-    if(index[t] >= 0) {
+-      heapUpdate(index[t], computeWeight(t))
++        for (var depPath in sources[key][1]) {
++            var depKey = sources[key][1][depPath];
++            if (!workerSources[depKey]) {
++                resolveSources(depKey);
++            }
++        }
+     }
+-  }
+ 
+-  //Initialize weights and heap
+-  var heap = []
+-  var index = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    var w = weights[i] = computeWeight(i)
+-    if(w < Infinity) {
+-      index[i] = heap.length
+-      heap.push(i)
+-    } else {
+-      index[i] = -1
+-    }
+-  }
+-  var heapCount = heap.length
+-  for(var i=heapCount>>1; i>=0; --i) {
+-    heapDown(i)
+-  }
+-  
+-  //Kill vertices
+-  while(true) {
+-    var hmin = heapPop()
+-    if((hmin < 0) || (weights[hmin] > minArea)) {
+-      break
+-    }
+-    kill(hmin)
+-  }
++    var src = '(' + bundleFn + ')({'
++        + Object.keys(workerSources).map(function (key) {
++            return stringify(key) + ':['
++                + sources[key][0]
++                + ',' + stringify(sources[key][1]) + ']'
++            ;
++        }).join(',')
++        + '},{},[' + stringify(skey) + '])'
++    ;
+ 
+-  //Build collapsed vertex table
+-  var npositions = []
+-  for(var i=0; i<n; ++i) {
+-    if(!dead[i]) {
+-      index[i] = npositions.length
+-      npositions.push(positions[i].slice())
+-    }
+-  }
+-  var nv = npositions.length
++    var URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
+ 
+-  function tortoiseHare(seq, start) {
+-    if(seq[start] < 0) {
+-      return start
+-    }
+-    var t = start
+-    var h = start
+-    do {
+-      //Walk two steps with h
+-      var nh = seq[h]
+-      if(!dead[h] || nh < 0 || nh === h) {
+-        break
+-      }
+-      h = nh
+-      nh = seq[h]
+-      if(!dead[h] || nh < 0 || nh === h) {
+-        break
+-      }
+-      h = nh
++    var blob = new Blob([src], { type: 'text/javascript' });
++    if (options && options.bare) { return blob; }
++    var workerUrl = URL.createObjectURL(blob);
++    var worker = new Worker(workerUrl);
++    worker.objectURL = workerUrl;
++    return worker;
++};
+ 
+-      //Walk one step with t
+-      t = seq[t]
+-    } while(t !== h)
+-    //Compress cycles
+-    for(var v=start; v!==h; v = seq[v]) {
+-      seq[v] = h
+-    }
+-    return h
+-  }
++},{}],470:[function(require,module,exports){
++module.exports.RADIUS = 6378137;
++module.exports.FLATTENING = 1/298.257223563;
++module.exports.POLAR_RADIUS = 6356752.3142;
+ 
+-  var ncells = []
+-  cells.forEach(function(c) {
+-    var tin = tortoiseHare(inv, c[0])
+-    var tout = tortoiseHare(outv, c[1])
+-    if(tin >= 0 && tout >= 0 && tin !== tout) {
+-      var cin = index[tin]
+-      var cout = index[tout]
+-      if(cin !== cout) {
+-        ncells.push([ cin, cout ])
+-      }
+-    }
+-  })
++},{}],471:[function(require,module,exports){
++module.exports = require('cwise-compiler')({
++    args: ['array', {
++        offset: [1],
++        array: 0
++    }, 'scalar', 'scalar', 'index'],
++    pre: {
++        "body": "{}",
++        "args": [],
++        "thisVars": [],
++        "localVars": []
++    },
++    post: {
++        "body": "{}",
++        "args": [],
++        "thisVars": [],
++        "localVars": []
++    },
++    body: {
++        "body": "{\n        var _inline_1_da = _inline_1_arg0_ - _inline_1_arg3_\n        var _inline_1_db = _inline_1_arg1_ - _inline_1_arg3_\n        if((_inline_1_da >= 0) !== (_inline_1_db >= 0)) {\n          _inline_1_arg2_.push(_inline_1_arg4_[0] + 0.5 + 0.5 * (_inline_1_da + _inline_1_db) / (_inline_1_da - _inline_1_db))\n        }\n      }",
++        "args": [{
++            "name": "_inline_1_arg0_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg1_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg2_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg3_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 2
++        }, {
++            "name": "_inline_1_arg4_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }],
++        "thisVars": [],
++        "localVars": ["_inline_1_da", "_inline_1_db"]
++    },
++    funcName: 'zeroCrossings'
++})
+ 
+-  //Normalize result
+-  sc.unique(sc.normalize(ncells))
++},{"cwise-compiler":86}],472:[function(require,module,exports){
++"use strict"
+ 
+-  //Return final list of cells
+-  return {
+-    positions: npositions,
+-    edges: ncells
+-  }
++module.exports = findZeroCrossings
++
++var core = require("./lib/zc-core")
++
++function findZeroCrossings(array, level) {
++  var cross = []
++  level = +level || 0.0
++  core(array.hi(array.shape[0]-1), cross, level)
++  return cross
+ }
+-},{"robust-orientation":439,"simplicial-complex":477}],479:[function(require,module,exports){
++},{"./lib/zc-core":471}],473:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -81070,7 +82810,7 @@ module.exports = [
+     }
+ ];
+ 
+-},{}],480:[function(require,module,exports){
++},{}],474:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -81361,7 +83101,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/cartesian/constants":596,"../../plots/font_attributes":609,"./arrow_paths":479}],481:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/cartesian/constants":590,"../../plots/font_attributes":603,"./arrow_paths":473}],475:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -82370,7 +84110,7 @@ function lineIntersect(x1, y1, x2, y2, x3, y3, x4, y4) {
+     return {x: x1 + a * t, y: y1 + d * t};
+ }
+ 
+-},{"../../lib":567,"../../lib/setcursor":576,"../../lib/svg_text_utils":580,"../../plotly":588,"../../plots/cartesian/axes":591,"../color":483,"../dragelement":504,"../drawing":506,"./arrow_paths":479,"./attributes":480,"d3":119,"fast-isnumeric":123}],482:[function(require,module,exports){
++},{"../../lib":561,"../../lib/setcursor":570,"../../lib/svg_text_utils":574,"../../plotly":582,"../../plots/cartesian/axes":585,"../color":477,"../dragelement":498,"../drawing":500,"./arrow_paths":473,"./attributes":474,"d3":90,"fast-isnumeric":98}],476:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -82410,7 +84150,7 @@ exports.borderLine = '#BEC8D9';
+ // gives back exactly lightLine if the other colors are defaults.
+ exports.lightFraction = 100 * (0xe - 0x4) / (0xf - 0x4);
+ 
+-},{}],483:[function(require,module,exports){
++},{}],477:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -82564,7 +84304,7 @@ function cleanOne(val) {
+     return 'rgb(' + rgbStr + ')';
+ }
+ 
+-},{"./attributes":482,"fast-isnumeric":123,"tinycolor2":454}],484:[function(require,module,exports){
++},{"./attributes":476,"fast-isnumeric":98,"tinycolor2":442}],478:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -82759,7 +84499,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/cartesian/layout_attributes":600,"../../plots/font_attributes":609}],485:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/cartesian/layout_attributes":594,"../../plots/font_attributes":603}],479:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -82826,7 +84566,7 @@ module.exports = function colorbarDefaults(containerIn, containerOut, layout) {
+     coerce('titleside');
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/tick_label_defaults":606,"../../plots/cartesian/tick_mark_defaults":607,"../../plots/cartesian/tick_value_defaults":608,"./attributes":484}],486:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/tick_label_defaults":600,"../../plots/cartesian/tick_mark_defaults":601,"../../plots/cartesian/tick_value_defaults":602,"./attributes":478}],480:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83456,7 +85196,7 @@ module.exports = function draw(gd, id) {
+     return component;
+ };
+ 
+-},{"../../lib":567,"../../lib/extend":562,"../../lib/setcursor":576,"../../plotly":588,"../../plots/cartesian/axes":591,"../../plots/cartesian/axis_defaults":592,"../../plots/cartesian/layout_attributes":600,"../../plots/cartesian/position_defaults":603,"../../plots/plots":647,"../color":483,"../dragelement":504,"../drawing":506,"../titles":546,"./attributes":484,"d3":119,"tinycolor2":454}],487:[function(require,module,exports){
++},{"../../lib":561,"../../lib/extend":556,"../../lib/setcursor":570,"../../plotly":582,"../../plots/cartesian/axes":585,"../../plots/cartesian/axis_defaults":586,"../../plots/cartesian/layout_attributes":594,"../../plots/cartesian/position_defaults":597,"../../plots/plots":641,"../color":477,"../dragelement":498,"../drawing":500,"../titles":540,"./attributes":478,"d3":90,"tinycolor2":442}],481:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83475,7 +85215,7 @@ module.exports = function hasColorbar(container) {
+     return Lib.isPlainObject(container.colorbar);
+ };
+ 
+-},{"../../lib":567}],488:[function(require,module,exports){
++},{"../../lib":561}],482:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83496,7 +85236,7 @@ exports.draw = require('./draw');
+ 
+ exports.hasColorbar = require('./has_colorbar');
+ 
+-},{"./attributes":484,"./defaults":485,"./draw":486,"./has_colorbar":487}],489:[function(require,module,exports){
++},{"./attributes":478,"./defaults":479,"./draw":480,"./has_colorbar":481}],483:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83569,7 +85309,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],490:[function(require,module,exports){
++},{}],484:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83635,7 +85375,7 @@ module.exports = function calc(trace, vals, containerStr, cLetter) {
+     }
+ };
+ 
+-},{"../../lib":567,"./flip_scale":494,"./scales":501}],491:[function(require,module,exports){
++},{"../../lib":561,"./flip_scale":488,"./scales":495}],485:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83725,7 +85465,7 @@ module.exports = function makeColorScaleAttributes(context) {
+     };
+ };
+ 
+-},{"../../lib/extend":562,"./attributes":489,"./scales.js":501}],492:[function(require,module,exports){
++},{"../../lib/extend":556,"./attributes":483,"./scales.js":495}],486:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83741,7 +85481,7 @@ var scales = require('./scales');
+ 
+ module.exports = scales.RdBu;
+ 
+-},{"./scales":501}],493:[function(require,module,exports){
++},{"./scales":495}],487:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83805,7 +85545,7 @@ module.exports = function colorScaleDefaults(traceIn, traceOut, layout, coerce,
+     if(showScale) colorbarDefaults(containerIn, containerOut, layout);
+ };
+ 
+-},{"../../lib":567,"../colorbar/defaults":485,"../colorbar/has_colorbar":487,"./flip_scale":494,"./is_valid_scale":498,"fast-isnumeric":123}],494:[function(require,module,exports){
++},{"../../lib":561,"../colorbar/defaults":479,"../colorbar/has_colorbar":481,"./flip_scale":488,"./is_valid_scale":492,"fast-isnumeric":98}],488:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83830,7 +85570,7 @@ module.exports = function flipScale(scl) {
+     return sclNew;
+ };
+ 
+-},{}],495:[function(require,module,exports){
++},{}],489:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83870,7 +85610,7 @@ module.exports = function getScale(scl, dflt) {
+     return scl;
+ };
+ 
+-},{"./default_scale":492,"./is_valid_scale_array":499,"./scales":501}],496:[function(require,module,exports){
++},{"./default_scale":486,"./is_valid_scale_array":493,"./scales":495}],490:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83916,7 +85656,7 @@ module.exports = function hasColorscale(trace, containerStr) {
+     );
+ };
+ 
+-},{"../../lib":567,"./is_valid_scale":498,"fast-isnumeric":123}],497:[function(require,module,exports){
++},{"../../lib":561,"./is_valid_scale":492,"fast-isnumeric":98}],491:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83948,7 +85688,7 @@ exports.flipScale = require('./flip_scale');
+ 
+ exports.makeScaleFunction = require('./make_scale_function');
+ 
+-},{"./attributes":489,"./calc":490,"./default_scale":492,"./defaults":493,"./flip_scale":494,"./get_scale":495,"./has_colorscale":496,"./is_valid_scale":498,"./make_scale_function":500,"./scales":501}],498:[function(require,module,exports){
++},{"./attributes":483,"./calc":484,"./default_scale":486,"./defaults":487,"./flip_scale":488,"./get_scale":489,"./has_colorscale":490,"./is_valid_scale":492,"./make_scale_function":494,"./scales":495}],492:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83969,7 +85709,7 @@ module.exports = function isValidScale(scl) {
+     else return isValidScaleArray(scl);
+ };
+ 
+-},{"./is_valid_scale_array":499,"./scales":501}],499:[function(require,module,exports){
++},{"./is_valid_scale_array":493,"./scales":495}],493:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84006,7 +85746,7 @@ module.exports = function isValidScaleArray(scl) {
+     return true;
+ };
+ 
+-},{"tinycolor2":454}],500:[function(require,module,exports){
++},{"tinycolor2":442}],494:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84055,7 +85795,7 @@ module.exports = function makeScaleFunction(scl, cmin, cmax) {
+     };
+ };
+ 
+-},{"../../lib":567,"../color":483,"d3":119,"fast-isnumeric":123,"tinycolor2":454}],501:[function(require,module,exports){
++},{"../../lib":561,"../color":477,"d3":90,"fast-isnumeric":98,"tinycolor2":442}],495:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84186,7 +85926,7 @@ module.exports = {
+     ]
+ };
+ 
+-},{}],502:[function(require,module,exports){
++},{}],496:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84219,7 +85959,7 @@ module.exports = function align(v, dv, v0, v1, anchor) {
+     return vc;
+ };
+ 
+-},{}],503:[function(require,module,exports){
++},{}],497:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84257,7 +85997,7 @@ module.exports = function getCursor(x, y, xanchor, yanchor) {
+     return cursorset[y][x];
+ };
+ 
+-},{"../../lib":567}],504:[function(require,module,exports){
++},{"../../lib":561}],498:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84442,7 +86182,7 @@ function finishDrag(gd) {
+     if(gd._replotPending) Plotly.plot(gd);
+ }
+ 
+-},{"../../lib":567,"../../plotly":588,"../../plots/cartesian/constants":596,"./align":502,"./cursor":503,"./unhover":505}],505:[function(require,module,exports){
++},{"../../lib":561,"../../plotly":582,"../../plots/cartesian/constants":590,"./align":496,"./cursor":497,"./unhover":499}],499:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84493,7 +86233,7 @@ unhover.raw = function unhoverRaw(gd, evt) {
+     gd._hoverdata = undefined;
+ };
+ 
+-},{"../../lib/events":561}],506:[function(require,module,exports){
++},{"../../lib/events":555}],500:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85057,7 +86797,7 @@ drawing.setClipUrl = function(s, localId) {
+     s.attr('clip-path', 'url(' + url + ')');
+ };
+ 
+-},{"../../constants/xmlns_namespaces":555,"../../lib":567,"../../lib/svg_text_utils":580,"../../plots/plots":647,"../../traces/scatter/make_bubble_size_func":763,"../../traces/scatter/subtypes":768,"../color":483,"../colorscale":497,"./symbol_defs":507,"d3":119,"fast-isnumeric":123}],507:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../../lib":561,"../../lib/svg_text_utils":574,"../../plots/plots":641,"../../traces/scatter/make_bubble_size_func":757,"../../traces/scatter/subtypes":762,"../color":477,"../colorscale":491,"./symbol_defs":501,"d3":90,"fast-isnumeric":98}],501:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85533,7 +87273,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"d3":119}],508:[function(require,module,exports){
++},{"d3":90}],502:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85675,7 +87415,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],509:[function(require,module,exports){
++},{}],503:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85738,7 +87478,7 @@ function calcOneAxis(calcTrace, trace, axis, coord) {
+     Axes.expand(axis, vals, {padded: true});
+ }
+ 
+-},{"../../plots/cartesian/axes":591,"../../plots/plots":647,"./compute_error":510,"fast-isnumeric":123}],510:[function(require,module,exports){
++},{"../../plots/cartesian/axes":585,"../../plots/plots":641,"./compute_error":504,"fast-isnumeric":98}],504:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85834,7 +87574,7 @@ function makeComputeErrorValue(type, value) {
+     }
+ }
+ 
+-},{}],511:[function(require,module,exports){
++},{}],505:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85911,7 +87651,7 @@ module.exports = function(traceIn, traceOut, defaultColor, opts) {
+     }
+ };
+ 
+-},{"../../lib":567,"../../plots/plots":647,"./attributes":508,"fast-isnumeric":123}],512:[function(require,module,exports){
++},{"../../lib":561,"../../plots/plots":641,"./attributes":502,"fast-isnumeric":98}],506:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85970,7 +87710,7 @@ errorBars.hoverInfo = function(calcPoint, trace, hoverPoint) {
+     }
+ };
+ 
+-},{"./attributes":508,"./calc":509,"./defaults":511,"./plot":513,"./style":514}],513:[function(require,module,exports){
++},{"./attributes":502,"./calc":503,"./defaults":505,"./plot":507,"./style":508}],507:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86091,7 +87831,7 @@ function errorCoords(d, xa, ya) {
+     return out;
+ }
+ 
+-},{"../../lib":567,"../../traces/scatter/subtypes":768,"d3":119,"fast-isnumeric":123}],514:[function(require,module,exports){
++},{"../../lib":561,"../../traces/scatter/subtypes":762,"d3":90,"fast-isnumeric":98}],508:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86128,7 +87868,7 @@ module.exports = function style(traces) {
+     });
+ };
+ 
+-},{"../color":483,"d3":119}],515:[function(require,module,exports){
++},{"../color":477,"d3":90}],509:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86288,7 +88028,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../plots/cartesian/constants":596}],516:[function(require,module,exports){
++},{"../../plots/cartesian/constants":590}],510:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86354,7 +88094,7 @@ function imageDefaults(imageIn, imageOut, fullLayout) {
+     return imageOut;
+ }
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"./attributes":515}],517:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"./attributes":509}],511:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86527,7 +88267,7 @@ module.exports = function draw(gd) {
+     imagesAbove.each(applyAttributes);
+ };
+ 
+-},{"../../plots/cartesian/axes":591,"../drawing":506,"d3":119}],518:[function(require,module,exports){
++},{"../../plots/cartesian/axes":585,"../drawing":500,"d3":90}],512:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86550,7 +88290,7 @@ module.exports = {
+     supplyLayoutDefaults: supplyLayoutDefaults
+ };
+ 
+-},{"./attributes":515,"./defaults":516,"./draw":517}],519:[function(require,module,exports){
++},{"./attributes":509,"./defaults":510,"./draw":511}],513:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86599,7 +88339,7 @@ exports.isMiddleAnchor = function isMiddleAnchor(opts) {
+     );
+ };
+ 
+-},{}],520:[function(require,module,exports){
++},{}],514:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86644,6 +88384,13 @@ module.exports = {
+         role: 'info',
+         description: 'Sets the orientation of the legend.'
+     },
++    horizontalspacing: {
++        valType: 'enumerated',
++        values: ['column', 'wrapped'],
++        dflt: ['column'],
++        role: 'style',
++        description: 'Sets whether the spacing for a horizontal legend is into columns or wrapping'
++    },
+     traceorder: {
+         valType: 'flaglist',
+         flags: ['reversed', 'grouped'],
+@@ -86714,7 +88461,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/font_attributes":609,"../color/attributes":482}],521:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/font_attributes":603,"../color/attributes":476}],515:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86732,7 +88479,7 @@ module.exports = {
+     scrollBarMargin: 4
+ };
+ 
+-},{}],522:[function(require,module,exports){
++},{}],516:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86757,6 +88504,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+ 
+     var visibleTraces = 0,
+         defaultOrder = 'normal',
++        defaultHorizontalSpacing = 'column',
+         defaultX,
+         defaultY,
+         defaultXAnchor,
+@@ -86821,10 +88569,11 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+     coerce('xanchor', defaultXAnchor);
+     coerce('y', defaultY);
+     coerce('yanchor', defaultYAnchor);
++    coerce('horizontalspacing', defaultHorizontalSpacing);
+     Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
+ };
+ 
+-},{"../../lib":567,"../../plots/plots":647,"./attributes":520,"./helpers":525}],523:[function(require,module,exports){
++},{"../../lib":561,"../../plots/plots":641,"./attributes":514,"./helpers":519}],517:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -87301,7 +89050,8 @@ function computeLegendDimensions(gd, groups, traces) {
+     var fullLayout = gd._fullLayout,
+         opts = fullLayout.legend,
+         borderwidth = opts.borderwidth,
+-        isGrouped = helpers.isGrouped(opts);
++        isGrouped = helpers.isGrouped(opts),
++        isHorizontalColumn = helpers.isHorizontalColumn(opts);
+ 
+     if(helpers.isVertical(opts)) {
+         if(isGrouped) {
+@@ -87408,7 +89158,7 @@ function computeLegendDimensions(gd, groups, traces) {
+         traces.each(function(d) {
+ 
+             var legendItem = d[0],
+-                traceWidth = maxTraceWidth,
++                traceWidth = isHorizontalColumn ? maxTraceWidth : 40 + d[0],
+                 traceGap = opts.tracegroupgap || 5;
+ 
+             if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
+@@ -87497,7 +89247,7 @@ function expandHorizontalMargin(gd) {
+     });
+ }
+ 
+-},{"../../lib":567,"../../plotly":588,"../../plots/plots":647,"../color":483,"../dragelement":504,"../drawing":506,"./anchor_utils":519,"./constants":521,"./get_legend_data":524,"./helpers":525,"./style":527,"d3":119}],524:[function(require,module,exports){
++},{"../../lib":561,"../../plotly":582,"../../plots/plots":641,"../color":477,"../dragelement":498,"../drawing":500,"./anchor_utils":513,"./constants":515,"./get_legend_data":518,"./helpers":519,"./style":521,"d3":90}],518:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -87603,7 +89353,7 @@ module.exports = function getLegendData(calcdata, opts) {
+     return legendData;
+ };
+ 
+-},{"../../plots/plots":647,"./helpers":525}],525:[function(require,module,exports){
++},{"../../plots/plots":641,"./helpers":519}],519:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -87634,7 +89384,10 @@ exports.isReversed = function isReversed(legendLayout) {
+     return (legendLayout.traceorder || '').indexOf('reversed') !== -1;
+ };
+ 
+-},{"../../plots/plots":647}],526:[function(require,module,exports){
++exports.isHorizontalColumn = function isReversed(legendLayout) {
++    return legendLayout.horizontalspacing === 'column';
++};
++},{"../../plots/plots":641}],520:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -87657,7 +89410,7 @@ legend.draw = require('./draw');
+ 
+ legend.style = require('./style');
+ 
+-},{"./attributes":520,"./defaults":522,"./draw":523,"./style":527}],527:[function(require,module,exports){
++},{"./attributes":514,"./defaults":516,"./draw":517,"./style":521}],521:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -87879,7 +89632,7 @@ function stylePies(d) {
+     if(pts.size()) pts.call(stylePie, d[0], trace);
+ }
+ 
+-},{"../../lib":567,"../../plots/plots":647,"../../traces/pie/style_one":747,"../../traces/scatter/subtypes":768,"../color":483,"../drawing":506,"d3":119}],528:[function(require,module,exports){
++},{"../../lib":561,"../../plots/plots":641,"../../traces/pie/style_one":741,"../../traces/scatter/subtypes":762,"../color":477,"../drawing":500,"d3":90}],522:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -88387,7 +90140,7 @@ modeBarButtons.resetViews = {
+     }
+ };
+ 
+-},{"../../../build/ploticon":2,"../../lib":567,"../../plotly":588,"../../snapshot/download":662}],529:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":561,"../../plotly":582,"../../snapshot/download":656}],523:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -88677,7 +90430,7 @@ function createModeBar(gd, buttons) {
+ 
+ module.exports = createModeBar;
+ 
+-},{"../../../build/ploticon":2,"../../lib":567,"d3":119}],530:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":561,"d3":90}],524:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -88905,7 +90658,7 @@ function fillCustomButton(customButtons) {
+     return customButtons;
+ }
+ 
+-},{"../../plotly":588,"../../traces/scatter/subtypes":768,"./":529,"./buttons":528}],531:[function(require,module,exports){
++},{"../../plotly":582,"../../traces/scatter/subtypes":762,"./":523,"./buttons":522}],525:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89009,7 +90762,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/font_attributes":609,"../color/attributes":482,"./button_attributes":532}],532:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/font_attributes":603,"../color/attributes":476,"./button_attributes":526}],526:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89065,7 +90818,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],533:[function(require,module,exports){
++},{}],527:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89094,7 +90847,7 @@ module.exports = {
+     darkAmount: 10
+ };
+ 
+-},{}],534:[function(require,module,exports){
++},{}],528:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89186,7 +90939,7 @@ function getPosDflt(containerOut, layout, counterAxes) {
+     return [containerOut.domain[0], posY + constants.yPad];
+ }
+ 
+-},{"../../lib":567,"../color":483,"./attributes":531,"./button_attributes":532,"./constants":533}],535:[function(require,module,exports){
++},{"../../lib":561,"../color":477,"./attributes":525,"./button_attributes":526,"./constants":527}],529:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89461,7 +91214,7 @@ function reposition(gd, buttons, opts, axName) {
+     });
+ }
+ 
+-},{"../../lib/svg_text_utils":580,"../../plotly":588,"../../plots/cartesian/axis_ids":593,"../../plots/plots":647,"../color":483,"../drawing":506,"../legend/anchor_utils":519,"./constants":533,"./get_update_object":536,"d3":119}],536:[function(require,module,exports){
++},{"../../lib/svg_text_utils":574,"../../plotly":582,"../../plots/cartesian/axis_ids":587,"../../plots/plots":641,"../color":477,"../drawing":500,"../legend/anchor_utils":513,"./constants":527,"./get_update_object":530,"d3":90}],530:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89519,7 +91272,7 @@ function getXRange(axisLayout, buttonLayout) {
+     return [range0, range1];
+ }
+ 
+-},{"d3":119}],537:[function(require,module,exports){
++},{"d3":90}],531:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89537,7 +91290,7 @@ exports.supplyLayoutDefaults = require('./defaults');
+ 
+ exports.draw = require('./draw');
+ 
+-},{"./attributes":531,"./defaults":534,"./draw":535}],538:[function(require,module,exports){
++},{"./attributes":525,"./defaults":528,"./draw":529}],532:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89608,7 +91361,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../color/attributes":482}],539:[function(require,module,exports){
++},{"../color/attributes":476}],533:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89904,7 +91657,7 @@ module.exports = function createSlider(gd) {
+         });
+ };
+ 
+-},{"../../constants/xmlns_namespaces":555,"../../lib":567,"../../plotly":588,"../../plots/cartesian/axes":591,"./helpers":541,"./range_plot":543}],540:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../../lib":561,"../../plotly":582,"../../plots/cartesian/axes":585,"./helpers":535,"./range_plot":537}],534:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89957,7 +91710,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, axName, coun
+     }
+ };
+ 
+-},{"../../lib":567,"./attributes":538}],541:[function(require,module,exports){
++},{"../../lib":561,"./attributes":532}],535:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89983,7 +91736,7 @@ exports.appendChildren = function appendChildren(el, children) {
+     }
+ };
+ 
+-},{}],542:[function(require,module,exports){
++},{}],536:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -90040,7 +91793,7 @@ function draw(gd) {
+     });
+ }
+ 
+-},{"../../plots/plots":647,"./create_slider":539,"./defaults":540}],543:[function(require,module,exports){
++},{"../../plots/plots":641,"./create_slider":533,"./defaults":534}],537:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -90221,7 +91974,7 @@ function makeScatter(trace, pointPairs, w, h) {
+     return [line, markers, fill];
+ }
+ 
+-},{"../../constants/xmlns_namespaces":555,"../../lib":567,"../drawing":506,"../drawing/symbol_defs":507,"./helpers":541,"d3":119}],544:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../../lib":561,"../drawing":500,"../drawing/symbol_defs":501,"./helpers":535,"d3":90}],538:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -90379,7 +92132,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../traces/scatter/attributes":749,"../annotations/attributes":480}],545:[function(require,module,exports){
++},{"../../lib/extend":556,"../../traces/scatter/attributes":743,"../annotations/attributes":474}],539:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91169,7 +92922,7 @@ function shapeBounds(ax, v0, v1, path, paramsToUse) {
+     if(max >= min) return [min, max];
+ }
+ 
+-},{"../../lib":567,"../../lib/setcursor":576,"../../plotly":588,"../../plots/cartesian/axes":591,"../color":483,"../dragelement":504,"../drawing":506,"./attributes":544,"fast-isnumeric":123}],546:[function(require,module,exports){
++},{"../../lib":561,"../../lib/setcursor":570,"../../plotly":582,"../../plots/cartesian/axes":585,"../color":477,"../dragelement":498,"../drawing":500,"./attributes":538,"fast-isnumeric":98}],540:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91399,7 +93152,7 @@ Titles.draw = function(gd, titleClass, options) {
+     el.classed('js-placeholder', isplaceholder);
+ };
+ 
+-},{"../../lib":567,"../../lib/svg_text_utils":580,"../../plotly":588,"../../plots/plots":647,"../color":483,"../drawing":506,"d3":119,"fast-isnumeric":123}],547:[function(require,module,exports){
++},{"../../lib":561,"../../lib/svg_text_utils":574,"../../plotly":582,"../../plots/plots":641,"../color":477,"../drawing":500,"d3":90,"fast-isnumeric":98}],541:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91535,7 +93288,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/font_attributes":609,"../color/attributes":482}],548:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/font_attributes":603,"../color/attributes":476}],542:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91610,7 +93363,7 @@ module.exports = {
+     hoverColor: '#F4FAFF'
+ };
+ 
+-},{}],549:[function(require,module,exports){
++},{}],543:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91706,7 +93459,7 @@ function buttonsDefaults(menuIn, menuOut) {
+     return buttonsOut;
+ }
+ 
+-},{"../../lib":567,"./attributes":547,"./constants":548}],550:[function(require,module,exports){
++},{"../../lib":561,"./attributes":541,"./constants":542}],544:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92165,7 +93918,7 @@ function clearPushMargins(gd) {
+     }
+ }
+ 
+-},{"../../lib":567,"../../lib/svg_text_utils":580,"../../plotly":588,"../../plots/plots":647,"../color":483,"../drawing":506,"../legend/anchor_utils":519,"./constants":548,"d3":119}],551:[function(require,module,exports){
++},{"../../lib":561,"../../lib/svg_text_utils":574,"../../plotly":582,"../../plots/plots":641,"../color":477,"../drawing":500,"../legend/anchor_utils":513,"./constants":542,"d3":90}],545:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92183,7 +93936,7 @@ exports.supplyLayoutDefaults = require('./defaults');
+ 
+ exports.draw = require('./draw');
+ 
+-},{"./attributes":547,"./defaults":549,"./draw":550}],552:[function(require,module,exports){
++},{"./attributes":541,"./defaults":543,"./draw":544}],546:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92204,7 +93957,7 @@ module.exports = {
+     longdashdot: [8, 1, 1, 1]
+ };
+ 
+-},{}],553:[function(require,module,exports){
++},{}],547:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92225,7 +93978,7 @@ module.exports = {
+     longdashdot: [[0.5, 0.7, 0.8, 1], 10]
+ };
+ 
+-},{}],554:[function(require,module,exports){
++},{}],548:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92248,7 +94001,7 @@ module.exports = {
+     x: '❌'
+ };
+ 
+-},{}],555:[function(require,module,exports){
++},{}],549:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92272,7 +94025,7 @@ exports.svgAttrs = {
+     'xmlns:xlink': exports.xlink
+ };
+ 
+-},{}],556:[function(require,module,exports){
++},{}],550:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92323,7 +94076,7 @@ exports.Queue = Plotly.Queue;
+ // export d3 used in the bundle
+ exports.d3 = require('d3');
+ 
+-},{"../build/ploticon":2,"./plot_api/set_plot_config":585,"./plot_api/to_image":586,"./plot_api/validate":587,"./plotly":588,"./snapshot/download":662,"d3":119}],557:[function(require,module,exports){
++},{"../build/ploticon":2,"./plot_api/set_plot_config":579,"./plot_api/to_image":580,"./plot_api/validate":581,"./plotly":582,"./snapshot/download":656,"d3":90}],551:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92356,7 +94109,7 @@ if(typeof MathJax !== 'undefined') {
+     exports.MathJax = false;
+ }
+ 
+-},{}],558:[function(require,module,exports){
++},{}],552:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92373,7 +94126,7 @@ module.exports = function arrayToCalcItem(traceAttr, calcItem, calcAttr, i) {
+     if(Array.isArray(traceAttr)) calcItem[calcAttr] = traceAttr[i];
+ };
+ 
+-},{}],559:[function(require,module,exports){
++},{}],553:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92732,7 +94485,7 @@ exports.validate = function(value, opts) {
+     return out !== failed;
+ };
+ 
+-},{"../components/colorscale/get_scale":495,"../components/colorscale/scales":501,"./nested_property":571,"fast-isnumeric":123,"tinycolor2":454}],560:[function(require,module,exports){
++},{"../components/colorscale/get_scale":489,"../components/colorscale/scales":495,"./nested_property":565,"fast-isnumeric":98,"tinycolor2":442}],554:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93071,7 +94824,7 @@ exports.parseDate = function(v) {
+     return out;
+ };
+ 
+-},{"../lib":567,"d3":119,"fast-isnumeric":123}],561:[function(require,module,exports){
++},{"../lib":561,"d3":90,"fast-isnumeric":98}],555:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93205,7 +94958,7 @@ var Events = {
+ 
+ module.exports = Events;
+ 
+-},{"events":57}],562:[function(require,module,exports){
++},{"events":96}],556:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93319,7 +95072,7 @@ function _extend(inputs, isDeep, keepAllKeys, noArrayCopies) {
+     return target;
+ }
+ 
+-},{"./is_plain_object.js":568}],563:[function(require,module,exports){
++},{"./is_plain_object.js":562}],557:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93343,7 +95096,7 @@ module.exports = function filterVisible(dataIn) {
+     return dataOut;
+ };
+ 
+-},{}],564:[function(require,module,exports){
++},{}],558:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93402,7 +95155,7 @@ function countryNameToISO3(countryName) {
+     Lib.warn('Unrecognized country name: ' + countryName + '.');
+ }
+ 
+-},{"../lib":567,"country-regex":114}],565:[function(require,module,exports){
++},{"../lib":561,"country-regex":83}],559:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93481,7 +95234,7 @@ function formatColor(containerIn, opacityIn, len) {
+ 
+ module.exports = formatColor;
+ 
+-},{"../components/color/attributes":482,"../components/colorscale/make_scale_function":500,"./str2rgbarray":579,"fast-isnumeric":123,"tinycolor2":454}],566:[function(require,module,exports){
++},{"../components/color/attributes":476,"../components/colorscale/make_scale_function":494,"./str2rgbarray":573,"fast-isnumeric":98,"tinycolor2":442}],560:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93555,7 +95308,7 @@ function convertHTMLToUnicode(html) {
+ 
+ module.exports = convertHTMLToUnicode;
+ 
+-},{"superscript-text":443}],567:[function(require,module,exports){
++},{"superscript-text":439}],561:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94175,7 +95928,7 @@ lib.numSeparate = function(value, separators) {
+     return x1 + x2;
+ };
+ 
+-},{"./coerce":559,"./dates":560,"./extend":562,"./is_plain_object":568,"./loggers":569,"./matrix":570,"./nested_property":571,"./notifier":572,"./search":575,"./stats":578,"d3":119}],568:[function(require,module,exports){
++},{"./coerce":553,"./dates":554,"./extend":556,"./is_plain_object":562,"./loggers":563,"./matrix":564,"./nested_property":565,"./notifier":566,"./search":569,"./stats":572,"d3":90}],562:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94204,7 +95957,7 @@ module.exports = function isPlainObject(obj) {
+     );
+ };
+ 
+-},{}],569:[function(require,module,exports){
++},{}],563:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94271,7 +96024,7 @@ loggers.error = function() {
+ };
+ /* eslint-enable no-console */
+ 
+-},{"../plot_api/plot_config":583}],570:[function(require,module,exports){
++},{"../plot_api/plot_config":577}],564:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94381,7 +96134,7 @@ exports.apply2DTransform2 = function(transform) {
+     };
+ };
+ 
+-},{}],571:[function(require,module,exports){
++},{}],565:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94637,7 +96390,7 @@ function badContainer(container, propStr, propParts) {
+     };
+ }
+ 
+-},{"fast-isnumeric":123}],572:[function(require,module,exports){
++},{"fast-isnumeric":98}],566:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94714,7 +96467,7 @@ module.exports = function(text, displayLength) {
+         });
+ };
+ 
+-},{"d3":119,"fast-isnumeric":123}],573:[function(require,module,exports){
++},{"d3":90,"fast-isnumeric":98}],567:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94954,7 +96707,7 @@ polygon.filter = function filter(pts, tolerance) {
+     };
+ };
+ 
+-},{"./matrix":570}],574:[function(require,module,exports){
++},{"./matrix":564}],568:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -95165,7 +96918,7 @@ queue.plotDo = function(gd, func, args) {
+ 
+ module.exports = queue;
+ 
+-},{"../lib":567,"../plot_api/plot_config":583}],575:[function(require,module,exports){
++},{"../lib":561,"../plot_api/plot_config":577}],569:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -95277,7 +97030,7 @@ exports.roundUp = function(val, arrayIn, reverse) {
+     return arrayIn[low];
+ };
+ 
+-},{"../lib":567,"fast-isnumeric":123}],576:[function(require,module,exports){
++},{"../lib":561,"fast-isnumeric":98}],570:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -95300,7 +97053,7 @@ module.exports = function setCursor(el3, csr) {
+     if(csr) el3.classed('cursor-' + csr, true);
+ };
+ 
+-},{}],577:[function(require,module,exports){
++},{}],571:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -95349,7 +97102,7 @@ module.exports = function showWebGlMsg(scene) {
+     return false;
+ };
+ 
+-},{"../components/color":483}],578:[function(require,module,exports){
++},{"../components/color":477}],572:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -95445,7 +97198,7 @@ exports.interp = function(arr, n) {
+     return frac * arr[Math.ceil(n)] + (1 - frac) * arr[Math.floor(n)];
+ };
+ 
+-},{"fast-isnumeric":123}],579:[function(require,module,exports){
++},{"fast-isnumeric":98}],573:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -95467,7 +97220,7 @@ function str2RgbaArray(color) {
+ 
+ module.exports = str2RgbaArray;
+ 
+-},{"arraytools":50,"tinycolor2":454}],580:[function(require,module,exports){
++},{"arraytools":28,"tinycolor2":442}],574:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -95968,7 +97721,7 @@ util.makeEditable = function(context, _delegate, options) {
+     return d3.rebind(this, dispatch, 'on');
+ };
+ 
+-},{"../constants/xmlns_namespaces":555,"../lib":567,"../plotly":588,"d3":119}],581:[function(require,module,exports){
++},{"../constants/xmlns_namespaces":549,"../lib":561,"../plotly":582,"d3":90}],575:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -96004,7 +97757,7 @@ topojsonUtils.getTopojsonFeatures = function(trace, topojson) {
+     return topojsonFeature(topojson, obj).features;
+ };
+ 
+-},{"../plots/geo/constants":610,"topojson":455}],582:[function(require,module,exports){
++},{"../plots/geo/constants":604,"topojson":444}],576:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99119,7 +100872,7 @@ function drawMainTitle(gd) {
+     });
+ }
+ 
+-},{"../components/color":483,"../components/drawing":506,"../components/errorbars":512,"../components/images":518,"../components/legend":526,"../components/modebar/manage":530,"../components/rangeselector":537,"../components/rangeslider":542,"../components/shapes":545,"../components/titles":546,"../components/updatemenus":551,"../constants/xmlns_namespaces":555,"../lib":567,"../lib/events":561,"../lib/queue":574,"../plotly":588,"../plots/cartesian/graph_interact":598,"../plots/plots":647,"d3":119,"fast-isnumeric":123,"gl-mat4/fromQuat":140}],583:[function(require,module,exports){
++},{"../components/color":477,"../components/drawing":500,"../components/errorbars":506,"../components/images":512,"../components/legend":520,"../components/modebar/manage":524,"../components/rangeselector":531,"../components/rangeslider":536,"../components/shapes":539,"../components/titles":540,"../components/updatemenus":545,"../constants/xmlns_namespaces":549,"../lib":561,"../lib/events":555,"../lib/queue":568,"../plotly":582,"../plots/cartesian/graph_interact":592,"../plots/plots":641,"d3":90,"fast-isnumeric":98,"gl-mat4/fromQuat":139}],577:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99228,7 +100981,7 @@ function defaultSetBackground(gd, bgColor) {
+     catch(e) { Lib.error(e); }
+ }
+ 
+-},{"../lib":567}],584:[function(require,module,exports){
++},{"../lib":561}],578:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99571,7 +101324,7 @@ function handleLinkedToArray(layoutAttributes) {
+     PlotSchema.crawl(layoutAttributes, callback);
+ }
+ 
+-},{"../lib":567,"../plotly":588,"../plots/plots":647,"../plots/polar/area_attributes":648,"../plots/polar/axis_attributes":649}],585:[function(require,module,exports){
++},{"../lib":561,"../plotly":582,"../plots/plots":641,"../plots/polar/area_attributes":642,"../plots/polar/axis_attributes":643}],579:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99597,7 +101350,7 @@ module.exports = function setPlotConfig(configObj) {
+     return Lib.extendFlat(Plotly.defaultConfig, configObj);
+ };
+ 
+-},{"../lib":567,"../plotly":588}],586:[function(require,module,exports){
++},{"../lib":561,"../plotly":582}],580:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99710,7 +101463,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":567,"../plotly":588,"../snapshot":664,"fast-isnumeric":123}],587:[function(require,module,exports){
++},{"../lib":561,"../plotly":582,"../snapshot":658,"fast-isnumeric":98}],581:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -100080,7 +101833,7 @@ function convertPathToAttributeString(path) {
+     return astr;
+ }
+ 
+-},{"../lib":567,"../plots/plots":647,"./plot_schema":584}],588:[function(require,module,exports){
++},{"../lib":561,"../plots/plots":641,"./plot_schema":578}],582:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -100198,7 +101951,7 @@ exports.PlotSchema = require('./plot_api/plot_schema');
+ // imaging routines
+ exports.Snapshot = require('./snapshot');
+ 
+-},{"../build/plotcss":1,"./components/annotations":481,"./components/color":483,"./components/colorbar":488,"./components/colorscale":497,"./components/drawing":506,"./components/errorbars":512,"./components/images":518,"./components/legend":526,"./components/modebar":529,"./components/shapes":545,"./components/updatemenus":551,"./fonts/mathjax_config":557,"./lib":567,"./lib/queue":574,"./lib/svg_text_utils":580,"./plot_api/plot_api":582,"./plot_api/plot_config":583,"./plot_api/plot_schema":584,"./plots/cartesian/axes":591,"./plots/cartesian/graph_interact":598,"./plots/plots":647,"./plots/polar/micropolar":650,"./snapshot":664,"./traces/scatter":759,"es6-promise":122}],589:[function(require,module,exports){
++},{"../build/plotcss":1,"./components/annotations":475,"./components/color":477,"./components/colorbar":482,"./components/colorscale":491,"./components/drawing":500,"./components/errorbars":506,"./components/images":512,"./components/legend":520,"./components/modebar":523,"./components/shapes":539,"./components/updatemenus":545,"./fonts/mathjax_config":551,"./lib":561,"./lib/queue":568,"./lib/svg_text_utils":574,"./plot_api/plot_api":576,"./plot_api/plot_config":577,"./plot_api/plot_schema":578,"./plots/cartesian/axes":585,"./plots/cartesian/graph_interact":592,"./plots/plots":641,"./plots/polar/micropolar":644,"./snapshot":658,"./traces/scatter":753,"es6-promise":95}],583:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -100302,7 +102055,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],590:[function(require,module,exports){
++},{}],584:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -100341,7 +102094,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],591:[function(require,module,exports){
++},{}],585:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -100516,14 +102269,27 @@ axes.getAutoRange = function(ax) {
+     }
+ 
+     if(minmin === maxmax) {
+-        newRange = axReverse ?
+-            [minmin + 1, ax.rangemode !== 'normal' ? 0 : minmin - 1] :
+-            [ax.rangemode !== 'normal' ? 0 : minmin - 1, minmin + 1];
++        var lower = minmin - 1;
++        var upper = minmin + 1;
++        if(ax.rangemode === 'tozero') {
++            newRange = minmin < 0 ? [lower, 0] : [0, upper];
++        }
++        else if(ax.rangemode === 'nonnegative') {
++            newRange = [Math.max(0, lower), Math.max(0, upper)];
++        }
++        else {
++            newRange = [lower, upper];
++        }
+     }
+     else if(mbest) {
+         if(ax.type === 'linear' || ax.type === '-') {
+-            if(ax.rangemode === 'tozero' && minbest.val >= 0) {
+-                minbest = {val: 0, pad: 0};
++            if(ax.rangemode === 'tozero') {
++                if(minbest.val >= 0) {
++                    minbest = {val: 0, pad: 0};
++                }
++                if(maxbest.val <= 0) {
++                    maxbest = {val: 0, pad: 0};
++                }
+             }
+             else if(ax.rangemode === 'nonnegative') {
+                 if(minbest.val - mbest * minbest.pad < 0) {
+@@ -100537,22 +102303,39 @@ axes.getAutoRange = function(ax) {
+             // in case it changed again...
+             mbest = (maxbest.val - minbest.val) /
+                 (ax._length - minbest.pad - maxbest.pad);
++
+         }
+ 
+         newRange = [
+             minbest.val - mbest * minbest.pad,
+             maxbest.val + mbest * maxbest.pad
+         ];
++    }
+ 
+-        // don't let axis have zero size
+-        if(newRange[0] === newRange[1]) {
++    // don't let axis have zero size, while still respecting tozero and nonnegative
++    if(newRange[0] === newRange[1]) {
++        if(ax.rangemode === 'tozero') {
++            if(newRange[0] < 0) {
++                newRange = [newRange[0], 0];
++            }
++            else if(newRange[0] > 0) {
++                newRange = [0, newRange[0]];
++            }
++            else {
++                newRange = [0, 1];
++            }
++        }
++        else {
+             newRange = [newRange[0] - 1, newRange[0] + 1];
++            if(ax.rangemode === 'nonnegative') {
++                newRange[0] = Math.max(0, newRange[0]);
++            }
+         }
++    }
+ 
+-        // maintain reversal
+-        if(axReverse) {
+-            newRange.reverse();
+-        }
++    // maintain reversal
++    if(axReverse) {
++        newRange.reverse();
+     }
+ 
+     return newRange;
+@@ -102335,7 +104118,7 @@ function swapAxisAttrs(layout, key, xFullAxes, yFullAxes) {
+ // rather than built-in % which gives a negative value for negative v
+ function mod(v, d) { return ((v % d) + d) % d; }
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"../../components/titles":546,"../../lib":567,"../../lib/svg_text_utils":580,"../../plotly":588,"./axis_ids":593,"./layout_attributes":600,"./layout_defaults":601,"./set_convert":605,"d3":119,"fast-isnumeric":123}],592:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"../../components/titles":540,"../../lib":561,"../../lib/svg_text_utils":574,"../../plotly":582,"./axis_ids":587,"./layout_attributes":594,"./layout_defaults":595,"./set_convert":599,"d3":90,"fast-isnumeric":98}],586:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -102618,7 +104401,7 @@ function category(a) {
+     return curvecats > curvenums * 2;
+ }
+ 
+-},{"../../components/color/attributes":482,"../../lib":567,"../plots":647,"./axis_ids":593,"./category_order_defaults":594,"./clean_datum":595,"./layout_attributes":600,"./ordered_categories":602,"./set_convert":605,"./tick_label_defaults":606,"./tick_mark_defaults":607,"./tick_value_defaults":608,"fast-isnumeric":123,"tinycolor2":454}],593:[function(require,module,exports){
++},{"../../components/color/attributes":476,"../../lib":561,"../plots":641,"./axis_ids":587,"./category_order_defaults":588,"./clean_datum":589,"./layout_attributes":594,"./ordered_categories":596,"./set_convert":599,"./tick_label_defaults":600,"./tick_mark_defaults":601,"./tick_value_defaults":602,"fast-isnumeric":98,"tinycolor2":442}],587:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -102739,7 +104522,7 @@ exports.getFromTrace = function(gd, fullTrace, type) {
+     return ax;
+ };
+ 
+-},{"../../lib":567,"../plots":647,"./constants":596}],594:[function(require,module,exports){
++},{"../../lib":561,"../plots":641,"./constants":590}],588:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -102773,7 +104556,7 @@ module.exports = function handleCategoryOrderDefaults(containerIn, containerOut,
+     }
+ };
+ 
+-},{}],595:[function(require,module,exports){
++},{}],589:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -102812,7 +104595,7 @@ module.exports = function cleanDatum(c) {
+     return c;
+ };
+ 
+-},{"../../lib":567,"fast-isnumeric":123}],596:[function(require,module,exports){
++},{"../../lib":561,"fast-isnumeric":98}],590:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -102890,7 +104673,7 @@ module.exports = {
+     REDRAWDELAY: 50
+ };
+ 
+-},{}],597:[function(require,module,exports){
++},{}],591:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -103579,7 +105362,7 @@ function isSelectOrLasso(dragmode) {
+     return modes.indexOf(dragmode) !== -1;
+ }
+ 
+-},{"../../components/color":483,"../../components/dragelement":504,"../../components/drawing":506,"../../lib":567,"../../lib/setcursor":576,"../../lib/svg_text_utils":580,"../../plotly":588,"./axes":591,"./constants":596,"./select":604,"d3":119,"tinycolor2":454}],598:[function(require,module,exports){
++},{"../../components/color":477,"../../components/dragelement":498,"../../components/drawing":500,"../../lib":561,"../../lib/setcursor":570,"../../lib/svg_text_utils":574,"../../plotly":582,"./axes":585,"./constants":590,"./select":598,"d3":90,"tinycolor2":442}],592:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -104926,7 +106709,7 @@ fx.inbox = function(v0, v1) {
+     return Infinity;
+ };
+ 
+-},{"../../components/color":483,"../../components/dragelement":504,"../../components/drawing":506,"../../lib":567,"../../lib/events":561,"../../lib/svg_text_utils":580,"./axes":591,"./constants":596,"./dragbox":597,"d3":119,"fast-isnumeric":123,"tinycolor2":454}],599:[function(require,module,exports){
++},{"../../components/color":477,"../../components/dragelement":498,"../../components/drawing":500,"../../lib":561,"../../lib/events":555,"../../lib/svg_text_utils":574,"./axes":585,"./constants":590,"./dragbox":591,"d3":90,"fast-isnumeric":98,"tinycolor2":442}],593:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105013,7 +106796,7 @@ exports.plot = function(gd) {
+     }
+ };
+ 
+-},{"../plots":647,"./attributes":590,"./constants":596}],600:[function(require,module,exports){
++},{"../plots":641,"./attributes":584,"./constants":590}],594:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105528,7 +107311,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/color/attributes":482,"../../components/rangeselector/attributes":531,"../../components/rangeslider/attributes":538,"../../lib/extend":562,"../font_attributes":609,"./constants":596}],601:[function(require,module,exports){
++},{"../../components/color/attributes":476,"../../components/rangeselector/attributes":525,"../../components/rangeslider/attributes":532,"../../lib/extend":556,"../font_attributes":603,"./constants":590}],595:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105701,7 +107484,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
+     });
+ };
+ 
+-},{"../../components/color":483,"../../components/rangeselector":537,"../../components/rangeslider":542,"../../lib":567,"../plots":647,"./axis_defaults":592,"./axis_ids":593,"./constants":596,"./layout_attributes":600,"./position_defaults":603}],602:[function(require,module,exports){
++},{"../../components/color":477,"../../components/rangeselector":531,"../../components/rangeslider":536,"../../lib":561,"../plots":641,"./axis_defaults":586,"./axis_ids":587,"./constants":590,"./layout_attributes":594,"./position_defaults":597}],596:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105780,7 +107563,7 @@ module.exports = function orderedCategories(axisLetter, categoryorder, categorya
+     }
+ };
+ 
+-},{"d3":119}],603:[function(require,module,exports){
++},{"d3":90}],597:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105845,7 +107628,7 @@ module.exports = function handlePositionDefaults(containerIn, containerOut, coer
+     return containerOut;
+ };
+ 
+-},{"../../lib":567,"fast-isnumeric":123}],604:[function(require,module,exports){
++},{"../../lib":561,"fast-isnumeric":98}],598:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106045,7 +107828,7 @@ module.exports = function prepSelect(e, startX, startY, dragOptions, mode) {
+     };
+ };
+ 
+-},{"../../components/color":483,"../../lib/polygon":573,"./axes":591,"./constants":596}],605:[function(require,module,exports){
++},{"../../components/color":477,"../../lib/polygon":567,"./axes":585,"./constants":590}],599:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106289,7 +108072,7 @@ module.exports = function setConvert(ax) {
+     ax._forceTick0 = null;
+ };
+ 
+-},{"../../lib":567,"./axis_ids":593,"./clean_datum":595,"./constants":596,"d3":119,"fast-isnumeric":123}],606:[function(require,module,exports){
++},{"../../lib":561,"./axis_ids":587,"./clean_datum":589,"./constants":590,"d3":90,"fast-isnumeric":98}],600:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106372,7 +108155,7 @@ function getShowAttrDflt(containerIn) {
+     }
+ }
+ 
+-},{"../../lib":567}],607:[function(require,module,exports){
++},{"../../lib":561}],601:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106405,7 +108188,7 @@ module.exports = function handleTickDefaults(containerIn, containerOut, coerce,
+     }
+ };
+ 
+-},{"../../lib":567,"./layout_attributes":600}],608:[function(require,module,exports){
++},{"../../lib":561,"./layout_attributes":594}],602:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106446,7 +108229,7 @@ module.exports = function handleTickValueDefaults(containerIn, containerOut, coe
+     }
+ };
+ 
+-},{"fast-isnumeric":123}],609:[function(require,module,exports){
++},{"fast-isnumeric":98}],603:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106488,7 +108271,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],610:[function(require,module,exports){
++},{}],604:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106646,7 +108429,7 @@ params.layerNameToAdjective = {
+ // base layers drawn over choropleth
+ params.baseLayersOverChoropleth = ['rivers', 'lakes'];
+ 
+-},{}],611:[function(require,module,exports){
++},{}],605:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -107140,7 +108923,7 @@ function createMockAxis(fullLayout) {
+     return mockAxis;
+ }
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"../../constants/xmlns_namespaces":555,"../../lib/filter_visible":563,"../../lib/topojson_utils":581,"../../plots/cartesian/axes":591,"./constants":610,"./projections":618,"./set_scale":619,"./zoom":620,"./zoom_reset":621,"d3":119,"topojson":455}],612:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"../../constants/xmlns_namespaces":549,"../../lib/filter_visible":557,"../../lib/topojson_utils":575,"../../plots/cartesian/axes":585,"./constants":604,"./projections":612,"./set_scale":613,"./zoom":614,"./zoom_reset":615,"d3":90,"topojson":444}],606:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -107246,7 +109029,7 @@ exports.toSVG = function(gd) {
+     }
+ };
+ 
+-},{"../../plots/plots":647,"./geo":611,"./layout/attributes":613,"./layout/defaults":616,"./layout/layout_attributes":617}],613:[function(require,module,exports){
++},{"../../plots/plots":641,"./geo":605,"./layout/attributes":607,"./layout/defaults":610,"./layout/layout_attributes":611}],607:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -107274,7 +109057,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],614:[function(require,module,exports){
++},{}],608:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -107337,7 +109120,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../../components/color/attributes":482}],615:[function(require,module,exports){
++},{"../../../components/color/attributes":476}],609:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -107411,7 +109194,7 @@ module.exports = function supplyGeoAxisLayoutDefaults(geoLayoutIn, geoLayoutOut)
+     }
+ };
+ 
+-},{"../../../lib":567,"../constants":610,"./axis_attributes":614}],616:[function(require,module,exports){
++},{"../../../lib":561,"../constants":604,"./axis_attributes":608}],610:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -107530,7 +109313,7 @@ function handleGeoDefaults(geoLayoutIn, geoLayoutOut, coerce) {
+     ];
+ }
+ 
+-},{"../../subplot_defaults":653,"../constants":610,"./axis_defaults":615,"./layout_attributes":617}],617:[function(require,module,exports){
++},{"../../subplot_defaults":647,"../constants":604,"./axis_defaults":609,"./layout_attributes":611}],611:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -107789,7 +109572,7 @@ module.exports = {
+     lataxis: geoAxesAttrs
+ };
+ 
+-},{"../../../components/color/attributes":482,"../constants":610,"./axis_attributes":614}],618:[function(require,module,exports){
++},{"../../../components/color/attributes":476,"../constants":604,"./axis_attributes":608}],612:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -108235,7 +110018,7 @@ function addProjectionsToD3(d3) {
+ 
+ module.exports = addProjectionsToD3;
+ 
+-},{}],619:[function(require,module,exports){
++},{}],613:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -108386,7 +110169,7 @@ function getBounds(projection, rangeBox) {
+     return d3.geo.path().projection(projection).bounds(rangeBox);
+ }
+ 
+-},{"./constants":610,"d3":119}],620:[function(require,module,exports){
++},{"./constants":604,"d3":90}],614:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -108813,7 +110596,7 @@ function d3_eventDispatch(target) {
+     return dispatch;
+ }
+ 
+-},{"d3":119}],621:[function(require,module,exports){
++},{"d3":90}],615:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -108848,7 +110631,7 @@ function createGeoZoomReset(geo, geoLayout) {
+ 
+ module.exports = createGeoZoomReset;
+ 
+-},{"../cartesian/graph_interact":598}],622:[function(require,module,exports){
++},{"../cartesian/graph_interact":592}],616:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109003,7 +110786,7 @@ function createCamera(scene) {
+     return result;
+ }
+ 
+-},{"mouse-change":421,"mouse-wheel":425}],623:[function(require,module,exports){
++},{"mouse-change":371,"mouse-wheel":373}],617:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109246,7 +111029,7 @@ function createAxes2D(scene) {
+ 
+ module.exports = createAxes2D;
+ 
+-},{"../../lib/html2unicode":566,"../../lib/str2rgbarray":579,"../../plotly":588}],624:[function(require,module,exports){
++},{"../../lib/html2unicode":560,"../../lib/str2rgbarray":573,"../../plotly":582}],618:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109358,7 +111141,7 @@ exports.toSVG = function(gd) {
+     }
+ };
+ 
+-},{"../../constants/xmlns_namespaces":555,"../cartesian/attributes":590,"../plots":647,"./scene2d":625}],625:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../cartesian/attributes":584,"../plots":641,"./scene2d":619}],619:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109907,7 +111690,7 @@ proto.hoverFormatter = function(axisName, val) {
+     return Axes.tickText(axis, axis.c2l(val), 'hover').text;
+ };
+ 
+-},{"../../lib/html2unicode":566,"../../lib/show_no_webgl_msg":577,"../../plots/cartesian/axes":591,"../../plots/cartesian/graph_interact":598,"./camera":622,"./convert":623,"gl-plot2d":171,"gl-select-box":201,"gl-spikes2d":221}],626:[function(require,module,exports){
++},{"../../lib/html2unicode":560,"../../lib/show_no_webgl_msg":571,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592,"./camera":616,"./convert":617,"gl-plot2d":173,"gl-select-box":188,"gl-spikes2d":197}],620:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110150,7 +111933,7 @@ function createCamera(element, options) {
+     return camera;
+ }
+ 
+-},{"3d-view":40,"mouse-change":421,"mouse-wheel":425,"right-now":435}],627:[function(require,module,exports){
++},{"3d-view":22,"mouse-change":371,"mouse-wheel":373,"right-now":412}],621:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110284,7 +112067,7 @@ function initAxes(gd, sceneLayout) {
+     }
+ }
+ 
+-},{"../../constants/xmlns_namespaces":555,"../plots":647,"./layout/attributes":628,"./layout/defaults":632,"./layout/layout_attributes":633,"./scene":637,"./set_convert":638}],628:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../plots":641,"./layout/attributes":622,"./layout/defaults":626,"./layout/layout_attributes":627,"./scene":631,"./set_convert":632}],622:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110312,7 +112095,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],629:[function(require,module,exports){
++},{}],623:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110428,7 +112211,7 @@ module.exports = {
+     zerolinewidth: axesAttrs.zerolinewidth
+ };
+ 
+-},{"../../../components/color":483,"../../../lib/extend":562,"../../cartesian/layout_attributes":600}],630:[function(require,module,exports){
++},{"../../../components/color":477,"../../../lib/extend":556,"../../cartesian/layout_attributes":594}],624:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110497,7 +112280,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, options) {
+     }
+ };
+ 
+-},{"../../../lib":567,"../../cartesian/axis_defaults":592,"./axis_attributes":629,"tinycolor2":454}],631:[function(require,module,exports){
++},{"../../../lib":561,"../../cartesian/axis_defaults":586,"./axis_attributes":623,"tinycolor2":442}],625:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110653,7 +112436,7 @@ function createAxesOptions(plotlyOptions) {
+ 
+ module.exports = createAxesOptions;
+ 
+-},{"../../../lib/html2unicode":566,"../../../lib/str2rgbarray":579,"arraytools":50}],632:[function(require,module,exports){
++},{"../../../lib/html2unicode":560,"../../../lib/str2rgbarray":573,"arraytools":28}],626:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110760,7 +112543,7 @@ function handleGl3dDefaults(sceneLayoutIn, sceneLayoutOut, coerce, opts) {
+     coerce('hovermode', opts.getDfltFromLayout('hovermode'));
+ }
+ 
+-},{"../../../components/color":483,"../../subplot_defaults":653,"./axis_defaults":630,"./layout_attributes":633}],633:[function(require,module,exports){
++},{"../../../components/color":477,"../../subplot_defaults":647,"./axis_defaults":624,"./layout_attributes":627}],627:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110930,7 +112713,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../../lib/extend":562,"./axis_attributes":629}],634:[function(require,module,exports){
++},{"../../../lib/extend":556,"./axis_attributes":623}],628:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110976,7 +112759,7 @@ function createSpikeOptions(layout) {
+ 
+ module.exports = createSpikeOptions;
+ 
+-},{"../../../lib/str2rgbarray":579}],635:[function(require,module,exports){
++},{"../../../lib/str2rgbarray":573}],629:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111071,7 +112854,7 @@ function computeTickMarks(scene) {
+     scene.contourLevels = contourLevelsFromTicks(ticks);
+ }
+ 
+-},{"../../../lib/html2unicode":566,"../../../plotly":588}],636:[function(require,module,exports){
++},{"../../../lib/html2unicode":560,"../../../plotly":582}],630:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111105,7 +112888,7 @@ function project(camera, v) {
+ 
+ module.exports = project;
+ 
+-},{}],637:[function(require,module,exports){
++},{}],631:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111835,7 +113618,7 @@ proto.toImage = function(format) {
+ 
+ module.exports = Scene;
+ 
+-},{"../../lib":567,"../../lib/show_no_webgl_msg":577,"../../lib/str2rgbarray":579,"../../plots/cartesian/axes":591,"../../plots/cartesian/graph_interact":598,"../../plots/plots":647,"./camera":626,"./layout/convert":631,"./layout/spikes":634,"./layout/tick_marks":635,"./project":636,"./set_convert":638,"gl-plot3d":189}],638:[function(require,module,exports){
++},{"../../lib":561,"../../lib/show_no_webgl_msg":571,"../../lib/str2rgbarray":573,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592,"../../plots/plots":641,"./camera":620,"./layout/convert":625,"./layout/spikes":628,"./layout/tick_marks":629,"./project":630,"./set_convert":632,"gl-plot3d":175}],632:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111857,7 +113640,7 @@ module.exports = function setConvert(containerOut) {
+     containerOut.setScale = noop;
+ };
+ 
+-},{"../cartesian/axes":591}],639:[function(require,module,exports){
++},{"../cartesian/axes":585}],633:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -112049,7 +113832,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../components/color/attributes":482,"../plotly":588,"./font_attributes":609}],640:[function(require,module,exports){
++},{"../components/color/attributes":476,"../plotly":582,"./font_attributes":603}],634:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -112079,7 +113862,7 @@ module.exports = {
+     mapOnErrorMsg: 'Mapbox error.'
+ };
+ 
+-},{}],641:[function(require,module,exports){
++},{}],635:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -112153,7 +113936,7 @@ module.exports = function convertTextOpts(textposition, iconSize) {
+     return { anchor: anchor, offset: offset };
+ };
+ 
+-},{"../../lib":567}],642:[function(require,module,exports){
++},{"../../lib":561}],636:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -112311,7 +114094,7 @@ function findAccessToken(gd, mapboxIds) {
+     return accessToken;
+ }
+ 
+-},{"../../constants/xmlns_namespaces":555,"../plots":647,"./constants":640,"./layout_attributes":644,"./layout_defaults":645,"./mapbox":646,"mapbox-gl":260}],643:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../plots":641,"./constants":634,"./layout_attributes":638,"./layout_defaults":639,"./mapbox":640,"mapbox-gl":273}],637:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -112536,7 +114319,7 @@ module.exports = function createMapboxLayer(mapbox, index, opts) {
+     return mapboxLayer;
+ };
+ 
+-},{"../../lib":567,"./convert_text_opts":641}],644:[function(require,module,exports){
++},{"../../lib":561,"./convert_text_opts":635}],638:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -112803,7 +114586,7 @@ module.exports = {
+ 
+ };
+ 
+-},{"../../components/color":483,"../../lib":567,"../../traces/scatter/attributes":749,"../font_attributes":609}],645:[function(require,module,exports){
++},{"../../components/color":477,"../../lib":561,"../../traces/scatter/attributes":743,"../font_attributes":603}],639:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -112899,7 +114682,7 @@ function handleLayerDefaults(containerIn, containerOut) {
+     }
+ }
+ 
+-},{"../../lib":567,"../subplot_defaults":653,"./layout_attributes":644}],646:[function(require,module,exports){
++},{"../../lib":561,"../subplot_defaults":647,"./layout_attributes":638}],640:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -113337,7 +115120,7 @@ function convertCenter(center) {
+     return [center.lon, center.lat];
+ }
+ 
+-},{"../../lib":567,"../cartesian/graph_interact":598,"./constants":640,"./layers":643,"./layout_attributes":644,"mapbox-gl":260}],647:[function(require,module,exports){
++},{"../../lib":561,"../cartesian/graph_interact":592,"./constants":634,"./layers":637,"./layout_attributes":638,"mapbox-gl":273}],641:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -114528,7 +116311,7 @@ plots.graphJson = function(gd, dataonly, mode, output, useDefaults) {
+     return (output === 'object') ? obj : JSON.stringify(obj);
+ };
+ 
+-},{"../components/color":483,"../lib":567,"../plotly":588,"./attributes":589,"./font_attributes":609,"./layout_attributes":639,"d3":119,"fast-isnumeric":123}],648:[function(require,module,exports){
++},{"../components/color":477,"../lib":561,"../plotly":582,"./attributes":583,"./font_attributes":603,"./layout_attributes":633,"d3":90,"fast-isnumeric":98}],642:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -114553,7 +116336,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../traces/scatter/attributes":749}],649:[function(require,module,exports){
++},{"../../traces/scatter/attributes":743}],643:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -114703,7 +116486,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../cartesian/layout_attributes":600}],650:[function(require,module,exports){
++},{"../../lib/extend":556,"../cartesian/layout_attributes":594}],644:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116126,7 +117909,7 @@ var extendDeepAll = Plotly.Lib.extendDeepAll;
+     return exports;
+ };
+ 
+-},{"../../plotly":588,"./micropolar_manager":651,"d3":119}],651:[function(require,module,exports){
++},{"../../plotly":582,"./micropolar_manager":645,"d3":90}],645:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116209,7 +117992,7 @@ manager.fillLayout = function(_gd) {
+     _gd._fullLayout = extendDeepAll(dflts, _gd.layout);
+ };
+ 
+-},{"../../plotly":588,"./undo_manager":652,"d3":119}],652:[function(require,module,exports){
++},{"../../plotly":582,"./undo_manager":646,"d3":90}],646:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116275,7 +118058,7 @@ module.exports = function UndoManager() {
+     };
+ };
+ 
+-},{}],653:[function(require,module,exports){
++},{}],647:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116350,7 +118133,7 @@ module.exports = function handleSubplotDefaults(layoutIn, layoutOut, fullData, o
+     }
+ };
+ 
+-},{"../lib":567,"./plots":647}],654:[function(require,module,exports){
++},{"../lib":561,"./plots":641}],648:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116424,7 +118207,7 @@ exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout)
+     }
+ };
+ 
+-},{"../../plots/plots":647,"./layout/attributes":655,"./layout/defaults":658,"./layout/layout_attributes":659,"./ternary":660}],655:[function(require,module,exports){
++},{"../../plots/plots":641,"./layout/attributes":649,"./layout/defaults":652,"./layout/layout_attributes":653,"./ternary":654}],649:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116450,7 +118233,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],656:[function(require,module,exports){
++},{}],650:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116514,7 +118297,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../../lib/extend":562,"../../cartesian/layout_attributes":600}],657:[function(require,module,exports){
++},{"../../../lib/extend":556,"../../cartesian/layout_attributes":594}],651:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116598,7 +118381,7 @@ module.exports = function supplyLayoutDefaults(containerIn, containerOut, option
+     }
+ };
+ 
+-},{"../../../lib":567,"../../cartesian/tick_label_defaults":606,"../../cartesian/tick_mark_defaults":607,"../../cartesian/tick_value_defaults":608,"./axis_attributes":656,"tinycolor2":454}],658:[function(require,module,exports){
++},{"../../../lib":561,"../../cartesian/tick_label_defaults":600,"../../cartesian/tick_mark_defaults":601,"../../cartesian/tick_value_defaults":602,"./axis_attributes":650,"tinycolor2":442}],652:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116661,7 +118444,7 @@ function handleTernaryDefaults(ternaryLayoutIn, ternaryLayoutOut, coerce, option
+     }
+ }
+ 
+-},{"../../../components/color":483,"../../subplot_defaults":653,"./axis_defaults":657,"./layout_attributes":659}],659:[function(require,module,exports){
++},{"../../../components/color":477,"../../subplot_defaults":647,"./axis_defaults":651,"./layout_attributes":653}],653:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116726,7 +118509,7 @@ module.exports = {
+     caxis: ternaryAxesAttrs
+ };
+ 
+-},{"../../../components/color/attributes":482,"./axis_attributes":656}],660:[function(require,module,exports){
++},{"../../../components/color/attributes":476,"./axis_attributes":650}],654:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117416,7 +119199,7 @@ function removeZoombox(gd) {
+         .remove();
+ }
+ 
+-},{"../../components/color":483,"../../components/dragelement":504,"../../components/drawing":506,"../../components/titles":546,"../../lib":567,"../../lib/extend":562,"../../lib/filter_visible":563,"../../plotly":588,"../cartesian/axes":591,"../cartesian/constants":596,"../cartesian/graph_interact":598,"../cartesian/select":604,"../cartesian/set_convert":605,"d3":119,"tinycolor2":454}],661:[function(require,module,exports){
++},{"../../components/color":477,"../../components/dragelement":498,"../../components/drawing":500,"../../components/titles":540,"../../lib":561,"../../lib/extend":556,"../../lib/filter_visible":557,"../../plotly":582,"../cartesian/axes":585,"../cartesian/constants":590,"../cartesian/graph_interact":592,"../cartesian/select":598,"../cartesian/set_convert":599,"d3":90,"tinycolor2":442}],655:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117572,7 +119355,7 @@ module.exports = function clonePlot(graphObj, options) {
+     return plotTile;
+ };
+ 
+-},{"../plotly":588}],662:[function(require,module,exports){
++},{"../plotly":582}],656:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117638,7 +119421,7 @@ function downloadImage(gd, opts) {
+ 
+ module.exports = downloadImage;
+ 
+-},{"../lib":567,"../plot_api/to_image":586,"./filesaver":663}],663:[function(require,module,exports){
++},{"../lib":561,"../plot_api/to_image":580,"./filesaver":657}],657:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117706,7 +119489,7 @@ var fileSaver = function(url, name) {
+ 
+ module.exports = fileSaver;
+ 
+-},{}],664:[function(require,module,exports){
++},{}],658:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117751,7 +119534,7 @@ var Snapshot = {
+ 
+ module.exports = Snapshot;
+ 
+-},{"./cloneplot":661,"./download":662,"./svgtoimg":665,"./toimage":666,"./tosvg":667}],665:[function(require,module,exports){
++},{"./cloneplot":655,"./download":656,"./svgtoimg":659,"./toimage":660,"./tosvg":661}],659:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117882,7 +119665,7 @@ function svgToImg(opts) {
+ 
+ module.exports = svgToImg;
+ 
+-},{"../lib":567,"events":57}],666:[function(require,module,exports){
++},{"../lib":561,"events":96}],660:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117961,7 +119744,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":567,"../plotly":588,"events":57}],667:[function(require,module,exports){
++},{"../lib":561,"../plotly":582,"events":96}],661:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118073,7 +119856,7 @@ module.exports = function toSVG(gd, format) {
+     return s;
+ };
+ 
+-},{"../components/color":483,"../components/drawing":506,"../constants/xmlns_namespaces":555,"../lib/svg_text_utils":580,"d3":119}],668:[function(require,module,exports){
++},{"../components/color":477,"../components/drawing":500,"../constants/xmlns_namespaces":549,"../lib/svg_text_utils":574,"d3":90}],662:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118101,7 +119884,7 @@ module.exports = function arraysToCalcdata(cd) {
+     mergeArray(markerLine.width, cd, 'mlw');
+ };
+ 
+-},{"../../lib":567}],669:[function(require,module,exports){
++},{"../../lib":561}],663:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118173,7 +119956,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../lib/extend":562,"../scatter/attributes":749}],670:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../lib/extend":556,"../scatter/attributes":743}],664:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118238,7 +120021,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../components/colorscale/calc":490,"../../components/colorscale/has_colorscale":496,"../../plots/cartesian/axes":591,"fast-isnumeric":123}],671:[function(require,module,exports){
++},{"../../components/colorscale/calc":484,"../../components/colorscale/has_colorscale":490,"../../plots/cartesian/axes":585,"fast-isnumeric":98}],665:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118280,7 +120063,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     errorBarsSupplyDefaults(traceIn, traceOut, Color.defaultLine, {axis: 'x', inherit: 'y'});
+ };
+ 
+-},{"../../components/color":483,"../../components/errorbars/defaults":511,"../../lib":567,"../bar/style_defaults":679,"../scatter/xy_defaults":770,"./attributes":669}],672:[function(require,module,exports){
++},{"../../components/color":477,"../../components/errorbars/defaults":505,"../../lib":561,"../bar/style_defaults":673,"../scatter/xy_defaults":764,"./attributes":663}],666:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118371,7 +120154,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     return [pointData];
+ };
+ 
+-},{"../../components/color":483,"../../components/errorbars":512,"../../plots/cartesian/graph_interact":598}],673:[function(require,module,exports){
++},{"../../components/color":477,"../../components/errorbars":506,"../../plots/cartesian/graph_interact":592}],667:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118412,7 +120195,7 @@ Bar.meta = {
+ 
+ module.exports = Bar;
+ 
+-},{"../../plots/cartesian":599,"../scatter/colorbar":752,"./arrays_to_calcdata":668,"./attributes":669,"./calc":670,"./defaults":671,"./hover":672,"./layout_attributes":674,"./layout_defaults":675,"./plot":676,"./set_positions":677,"./style":678}],674:[function(require,module,exports){
++},{"../../plots/cartesian":593,"../scatter/colorbar":746,"./arrays_to_calcdata":662,"./attributes":663,"./calc":664,"./defaults":665,"./hover":666,"./layout_attributes":668,"./layout_defaults":669,"./plot":670,"./set_positions":671,"./style":672}],668:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118477,7 +120260,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],675:[function(require,module,exports){
++},{}],669:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118535,7 +120318,7 @@ module.exports = function(layoutIn, layoutOut, fullData) {
+     coerce('bargroupgap');
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"../../plots/plots":647,"./layout_attributes":674}],676:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"../../plots/plots":641,"./layout_attributes":668}],670:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118647,7 +120430,7 @@ module.exports = function plot(gd, plotinfo, cdbar) {
+ 
+ };
+ 
+-},{"../../components/color":483,"../../components/errorbars":512,"../../lib":567,"./arrays_to_calcdata":668,"d3":119,"fast-isnumeric":123}],677:[function(require,module,exports){
++},{"../../components/color":477,"../../components/errorbars":506,"../../lib":561,"./arrays_to_calcdata":662,"d3":90,"fast-isnumeric":98}],671:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118878,7 +120661,7 @@ module.exports = function setPositions(gd, plotinfo) {
+     });
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"../../plots/plots":647,"fast-isnumeric":123}],678:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"../../plots/plots":641,"fast-isnumeric":98}],672:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118957,7 +120740,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"../../components/errorbars":512,"d3":119}],679:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"../../components/errorbars":506,"d3":90}],673:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118994,7 +120777,7 @@ module.exports = function handleStyleDefaults(traceIn, traceOut, coerce, default
+     coerce('marker.line.width');
+ };
+ 
+-},{"../../components/color":483,"../../components/colorscale/defaults":493,"../../components/colorscale/has_colorscale":496}],680:[function(require,module,exports){
++},{"../../components/color":477,"../../components/colorscale/defaults":487,"../../components/colorscale/has_colorscale":490}],674:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119172,7 +120955,7 @@ module.exports = {
+     fillcolor: scatterAttrs.fillcolor
+ };
+ 
+-},{"../../components/color/attributes":482,"../../lib/extend":562,"../scatter/attributes":749}],681:[function(require,module,exports){
++},{"../../components/color/attributes":476,"../../lib/extend":556,"../scatter/attributes":743}],675:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119321,7 +121104,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"fast-isnumeric":123}],682:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"fast-isnumeric":98}],676:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119390,7 +121173,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor) {
+     }
+ };
+ 
+-},{"../../components/color":483,"../../lib":567,"./attributes":680}],683:[function(require,module,exports){
++},{"../../components/color":477,"../../lib":561,"./attributes":674}],677:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119499,7 +121282,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     return closeData;
+ };
+ 
+-},{"../../components/color":483,"../../lib":567,"../../plots/cartesian/axes":591,"../../plots/cartesian/graph_interact":598}],684:[function(require,module,exports){
++},{"../../components/color":477,"../../lib":561,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592}],678:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119545,7 +121328,7 @@ Box.meta = {
+ 
+ module.exports = Box;
+ 
+-},{"../../plots/cartesian":599,"./attributes":680,"./calc":681,"./defaults":682,"./hover":683,"./layout_attributes":685,"./layout_defaults":686,"./plot":687,"./set_positions":688,"./style":689}],685:[function(require,module,exports){
++},{"../../plots/cartesian":593,"./attributes":674,"./calc":675,"./defaults":676,"./hover":677,"./layout_attributes":679,"./layout_defaults":680,"./plot":681,"./set_positions":682,"./style":683}],679:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119596,7 +121379,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],686:[function(require,module,exports){
++},{}],680:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119630,7 +121413,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
+     coerce('boxgroupgap');
+ };
+ 
+-},{"../../lib":567,"../../plots/plots":647,"./layout_attributes":685}],687:[function(require,module,exports){
++},{"../../lib":561,"../../plots/plots":641,"./layout_attributes":679}],681:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119857,7 +121640,7 @@ module.exports = function plot(gd, plotinfo, cdbox) {
+     });
+ };
+ 
+-},{"../../components/drawing":506,"../../lib":567,"d3":119}],688:[function(require,module,exports){
++},{"../../components/drawing":500,"../../lib":561,"d3":90}],682:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119950,7 +121733,7 @@ module.exports = function setPositions(gd, plotinfo) {
+     }
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"../../plots/plots":647}],689:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"../../plots/plots":641}],683:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119989,7 +121772,7 @@ module.exports = function style(gd) {
+         });
+ };
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"d3":119}],690:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"d3":90}],684:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120040,7 +121823,7 @@ module.exports = extendFlat({}, {
+     colorscaleAttrs
+ );
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../../plots/attributes":589,"../scattergeo/attributes":777}],691:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../../plots/attributes":583,"../scattergeo/attributes":771}],685:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120059,7 +121842,7 @@ module.exports = function calc(gd, trace) {
+     colorscaleCalc(trace, trace.z, '', 'z');
+ };
+ 
+-},{"../../components/colorscale/calc":490}],692:[function(require,module,exports){
++},{"../../components/colorscale/calc":484}],686:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120114,7 +121897,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     coerce('hoverinfo', (layout._dataLength === 1) ? 'location+z+text' : undefined);
+ };
+ 
+-},{"../../components/colorscale/defaults":493,"../../lib":567,"./attributes":690}],693:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487,"../../lib":561,"./attributes":684}],687:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120149,7 +121932,7 @@ Choropleth.meta = {
+ 
+ module.exports = Choropleth;
+ 
+-},{"../../plots/geo":612,"../heatmap/colorbar":707,"./attributes":690,"./calc":691,"./defaults":692,"./plot":694}],694:[function(require,module,exports){
++},{"../../plots/geo":606,"../heatmap/colorbar":701,"./attributes":684,"./calc":685,"./defaults":686,"./plot":688}],688:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120370,7 +122153,7 @@ function makeEventDataFunc(trace) {
+     };
+ }
+ 
+-},{"../../components/color":483,"../../components/colorscale/get_scale":495,"../../components/colorscale/make_scale_function":500,"../../components/drawing":506,"../../lib/array_to_calc_item":558,"../../lib/geo_location_utils":564,"../../lib/topojson_utils":581,"../../plots/cartesian/axes":591,"../../plots/cartesian/graph_interact":598,"../../plots/geo/constants":610,"./attributes":690,"d3":119}],695:[function(require,module,exports){
++},{"../../components/color":477,"../../components/colorscale/get_scale":489,"../../components/colorscale/make_scale_function":494,"../../components/drawing":500,"../../lib/array_to_calc_item":552,"../../lib/geo_location_utils":558,"../../lib/topojson_utils":575,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592,"../../plots/geo/constants":604,"./attributes":684,"d3":90}],689:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120496,7 +122279,7 @@ module.exports = extendFlat({},
+     {autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false})}
+ );
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../heatmap/attributes":705,"../scatter/attributes":749}],696:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../heatmap/attributes":699,"../scatter/attributes":743}],690:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120549,7 +122332,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../plots/cartesian/axes":591,"../heatmap/calc":706}],697:[function(require,module,exports){
++},{"../../plots/cartesian/axes":585,"../heatmap/calc":700}],691:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120610,7 +122393,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(trace.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":486,"../../plots/plots":647,"./make_color_map":701}],698:[function(require,module,exports){
++},{"../../components/colorbar/draw":480,"../../plots/plots":641,"./make_color_map":695}],692:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120654,7 +122437,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     handleStyleDefaults(traceIn, traceOut, coerce, layout);
+ };
+ 
+-},{"../../lib":567,"../contour/style_defaults":704,"../heatmap/has_columns":710,"../heatmap/xyz_defaults":716,"./attributes":695}],699:[function(require,module,exports){
++},{"../../lib":561,"../contour/style_defaults":698,"../heatmap/has_columns":704,"../heatmap/xyz_defaults":710,"./attributes":689}],693:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120673,7 +122456,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     return heatmapHoverPoints(pointData, xval, yval, hovermode, true);
+ };
+ 
+-},{"../heatmap/hover":711}],700:[function(require,module,exports){
++},{"../heatmap/hover":705}],694:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120714,7 +122497,7 @@ Contour.meta = {
+ 
+ module.exports = Contour;
+ 
+-},{"../../plots/cartesian":599,"./attributes":695,"./calc":696,"./colorbar":697,"./defaults":698,"./hover":699,"./plot":702,"./style":703}],701:[function(require,module,exports){
++},{"../../plots/cartesian":593,"./attributes":689,"./calc":690,"./colorbar":691,"./defaults":692,"./hover":693,"./plot":696,"./style":697}],695:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120794,7 +122577,7 @@ module.exports = function makeColorMap(trace) {
+     return colorMap;
+ };
+ 
+-},{"../../components/colorscale/get_scale":495,"d3":119}],702:[function(require,module,exports){
++},{"../../components/colorscale/get_scale":489,"d3":90}],696:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121504,7 +123287,7 @@ function makeClipMask(cd0) {
+     return z;
+ }
+ 
+-},{"../../components/drawing":506,"../../lib":567,"../heatmap/plot":714,"d3":119}],703:[function(require,module,exports){
++},{"../../components/drawing":500,"../../lib":561,"../heatmap/plot":708,"d3":90}],697:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121561,7 +123344,7 @@ module.exports = function style(gd) {
+     heatmapStyle(gd);
+ };
+ 
+-},{"../../components/drawing":506,"../heatmap/style":715,"./make_color_map":701,"d3":119}],704:[function(require,module,exports){
++},{"../../components/drawing":500,"../heatmap/style":709,"./make_color_map":695,"d3":90}],698:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121597,7 +123380,7 @@ module.exports = function handleStyleDefaults(traceIn, traceOut, coerce, layout)
+     }
+ };
+ 
+-},{"../../components/colorscale/defaults":493}],705:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487}],699:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121685,7 +123468,7 @@ module.exports = extendFlat({},
+     {autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false})}
+ );
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../scatter/attributes":749}],706:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../scatter/attributes":743}],700:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122131,7 +123914,7 @@ function iterateInterp2d(z, emptyPoints, overshoot) {
+     return maxFractionalChange;
+ }
+ 
+-},{"../../components/colorscale/calc":490,"../../lib":567,"../../plots/cartesian/axes":591,"../../plots/plots":647,"../histogram2d/calc":726,"./convert_column_xyz":708,"./has_columns":710,"./max_row_length":713,"fast-isnumeric":123}],707:[function(require,module,exports){
++},{"../../components/colorscale/calc":484,"../../lib":561,"../../plots/cartesian/axes":585,"../../plots/plots":641,"../histogram2d/calc":720,"./convert_column_xyz":702,"./has_columns":704,"./max_row_length":707,"fast-isnumeric":98}],701:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122177,7 +123960,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(trace.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":486,"../../components/colorscale/get_scale":495,"../../lib":567,"../../plots/plots":647,"d3":119,"fast-isnumeric":123}],708:[function(require,module,exports){
++},{"../../components/colorbar/draw":480,"../../components/colorscale/get_scale":489,"../../lib":561,"../../plots/plots":641,"d3":90,"fast-isnumeric":98}],702:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122234,7 +124017,7 @@ module.exports = function convertColumnXYZ(trace, xa, ya) {
+     if(hasColumnText) trace.text = text;
+ };
+ 
+-},{"../../lib":567}],709:[function(require,module,exports){
++},{"../../lib":561}],703:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122272,7 +124055,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: '', cLetter: 'z'});
+ };
+ 
+-},{"../../components/colorscale/defaults":493,"../../lib":567,"./attributes":705,"./has_columns":710,"./xyz_defaults":716}],710:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487,"../../lib":561,"./attributes":699,"./has_columns":704,"./xyz_defaults":710}],704:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122288,7 +124071,7 @@ module.exports = function(trace) {
+     return !Array.isArray(trace.z[0]);
+ };
+ 
+-},{}],711:[function(require,module,exports){
++},{}],705:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122406,7 +124189,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode, contour)
+     })];
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/constants":596,"../../plots/cartesian/graph_interact":598}],712:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/constants":590,"../../plots/cartesian/graph_interact":592}],706:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122461,7 +124244,7 @@ Heatmap.meta = {
+ 
+ module.exports = Heatmap;
+ 
+-},{"../../plots/cartesian":599,"./attributes":705,"./calc":706,"./colorbar":707,"./defaults":709,"./hover":711,"./plot":714,"./style":715}],713:[function(require,module,exports){
++},{"../../plots/cartesian":593,"./attributes":699,"./calc":700,"./colorbar":701,"./defaults":703,"./hover":705,"./plot":708,"./style":709}],707:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122483,7 +124266,7 @@ module.exports = function maxRowLength(z) {
+     return len;
+ };
+ 
+-},{}],714:[function(require,module,exports){
++},{}],708:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122882,7 +124665,7 @@ function plotOne(gd, plotinfo, cd) {
+     image3.exit().remove();
+ }
+ 
+-},{"../../components/colorscale/get_scale":495,"../../constants/xmlns_namespaces":555,"../../lib":567,"../../plots/plots":647,"./max_row_length":713,"d3":119,"tinycolor2":454}],715:[function(require,module,exports){
++},{"../../components/colorscale/get_scale":489,"../../constants/xmlns_namespaces":549,"../../lib":561,"../../plots/plots":641,"./max_row_length":707,"d3":90,"tinycolor2":442}],709:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122903,7 +124686,7 @@ module.exports = function style(gd) {
+         });
+ };
+ 
+-},{"d3":119}],716:[function(require,module,exports){
++},{"d3":90}],710:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122992,7 +124775,7 @@ function isValidZ(z) {
+     return (allRowsAreArrays && oneRowIsFilled && hasOneNumber);
+ }
+ 
+-},{"./has_columns":710,"fast-isnumeric":123}],717:[function(require,module,exports){
++},{"./has_columns":704,"fast-isnumeric":98}],711:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123159,7 +124942,7 @@ function makeBinsAttr(axLetter) {
+     };
+ }
+ 
+-},{"../bar/attributes":669}],718:[function(require,module,exports){
++},{"../bar/attributes":663}],712:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123185,7 +124968,7 @@ module.exports = function doAvg(size, counts) {
+     return total;
+ };
+ 
+-},{}],719:[function(require,module,exports){
++},{}],713:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123215,7 +124998,7 @@ module.exports = function handleBinDefaults(traceIn, traceOut, coerce, binDirect
+     return traceOut;
+ };
+ 
+-},{}],720:[function(require,module,exports){
++},{}],714:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123289,7 +125072,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"fast-isnumeric":123}],721:[function(require,module,exports){
++},{"fast-isnumeric":98}],715:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123419,7 +125202,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"./average":718,"./bin_functions":720,"./norm_functions":724,"fast-isnumeric":123}],722:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"./average":712,"./bin_functions":714,"./norm_functions":718,"fast-isnumeric":98}],716:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123471,7 +125254,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     errorBarsSupplyDefaults(traceIn, traceOut, Color.defaultLine, {axis: 'x', inherit: 'y'});
+ };
+ 
+-},{"../../components/color":483,"../../components/errorbars/defaults":511,"../../lib":567,"../bar/style_defaults":679,"./attributes":717,"./bin_defaults":719}],723:[function(require,module,exports){
++},{"../../components/color":477,"../../components/errorbars/defaults":505,"../../lib":561,"../bar/style_defaults":673,"./attributes":711,"./bin_defaults":713}],717:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123526,7 +125309,7 @@ Histogram.meta = {
+ 
+ module.exports = Histogram;
+ 
+-},{"../../plots/cartesian":599,"../bar/hover":672,"../bar/layout_attributes":674,"../bar/layout_defaults":675,"../bar/plot":676,"../bar/set_positions":677,"../bar/style":678,"../scatter/colorbar":752,"./attributes":717,"./calc":721,"./defaults":722}],724:[function(require,module,exports){
++},{"../../plots/cartesian":593,"../bar/hover":666,"../bar/layout_attributes":668,"../bar/layout_defaults":669,"../bar/plot":670,"../bar/set_positions":671,"../bar/style":672,"../scatter/colorbar":746,"./attributes":711,"./calc":715,"./defaults":716}],718:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123561,7 +125344,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],725:[function(require,module,exports){
++},{}],719:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123613,7 +125396,7 @@ module.exports = extendFlat({},
+     {autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false})}
+ );
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../heatmap/attributes":705,"../histogram/attributes":717}],726:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../heatmap/attributes":699,"../histogram/attributes":711}],720:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123779,7 +125562,7 @@ module.exports = function calc(gd, trace) {
+     };
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"../histogram/average":718,"../histogram/bin_functions":720,"../histogram/norm_functions":724}],727:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"../histogram/average":712,"../histogram/bin_functions":714,"../histogram/norm_functions":718}],721:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123812,7 +125595,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, layout) {
+     );
+ };
+ 
+-},{"../../components/colorscale/defaults":493,"../../lib":567,"./attributes":725,"./sample_defaults":729}],728:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487,"../../lib":561,"./attributes":719,"./sample_defaults":723}],722:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123852,7 +125635,7 @@ Histogram2D.meta = {
+ 
+ module.exports = Histogram2D;
+ 
+-},{"../../plots/cartesian":599,"../heatmap/calc":706,"../heatmap/colorbar":707,"../heatmap/hover":711,"../heatmap/plot":714,"../heatmap/style":715,"./attributes":725,"./defaults":727}],729:[function(require,module,exports){
++},{"../../plots/cartesian":593,"../heatmap/calc":700,"../heatmap/colorbar":701,"../heatmap/hover":705,"../heatmap/plot":708,"../heatmap/style":709,"./attributes":719,"./defaults":721}],723:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123888,7 +125671,7 @@ module.exports = function handleSampleDefaults(traceIn, traceOut, coerce) {
+     handleBinDefaults(traceIn, traceOut, coerce, binDirections);
+ };
+ 
+-},{"../histogram/bin_defaults":719}],730:[function(require,module,exports){
++},{"../histogram/bin_defaults":713}],724:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123932,7 +125715,7 @@ module.exports = extendFlat({}, {
+     colorscaleAttrs
+ );
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../contour/attributes":695,"../histogram2d/attributes":725}],731:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../contour/attributes":689,"../histogram2d/attributes":719}],725:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123968,7 +125751,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     handleStyleDefaults(traceIn, traceOut, coerce, layout);
+ };
+ 
+-},{"../../lib":567,"../contour/style_defaults":704,"../histogram2d/sample_defaults":729,"./attributes":730}],732:[function(require,module,exports){
++},{"../../lib":561,"../contour/style_defaults":698,"../histogram2d/sample_defaults":723,"./attributes":724}],726:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124008,7 +125791,7 @@ Histogram2dContour.meta = {
+ 
+ module.exports = Histogram2dContour;
+ 
+-},{"../../plots/cartesian":599,"../contour/calc":696,"../contour/colorbar":697,"../contour/hover":699,"../contour/plot":702,"../contour/style":703,"./attributes":730,"./defaults":731}],733:[function(require,module,exports){
++},{"../../plots/cartesian":593,"../contour/calc":690,"../contour/colorbar":691,"../contour/hover":693,"../contour/plot":696,"../contour/style":697,"./attributes":724,"./defaults":725}],727:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124207,7 +125990,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../surface/attributes":801}],734:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../surface/attributes":795}],728:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124369,7 +126152,7 @@ function createMesh3DTrace(scene, data) {
+ 
+ module.exports = createMesh3DTrace;
+ 
+-},{"../../lib/str2rgbarray":579,"alpha-shape":41,"convex-hull":108,"delaunay-triangulate":120,"gl-mesh3d":156,"tinycolor2":454}],735:[function(require,module,exports){
++},{"../../lib/str2rgbarray":573,"alpha-shape":27,"convex-hull":79,"delaunay-triangulate":91,"gl-mesh3d":166,"tinycolor2":442}],729:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124466,7 +126249,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     }
+ };
+ 
+-},{"../../components/colorbar/defaults":485,"../../lib":567,"./attributes":733}],736:[function(require,module,exports){
++},{"../../components/colorbar/defaults":479,"../../lib":561,"./attributes":727}],730:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124502,7 +126285,7 @@ Mesh3D.meta = {
+ 
+ module.exports = Mesh3D;
+ 
+-},{"../../plots/gl3d":627,"../heatmap/colorbar":707,"./attributes":733,"./convert":734,"./defaults":735}],737:[function(require,module,exports){
++},{"../../plots/gl3d":621,"../heatmap/colorbar":701,"./attributes":727,"./convert":728,"./defaults":729}],731:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124766,7 +126549,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/color/attributes":482,"../../lib/extend":562,"../../plots/attributes":589,"../../plots/font_attributes":609}],738:[function(require,module,exports){
++},{"../../components/color/attributes":476,"../../lib/extend":556,"../../plots/attributes":583,"../../plots/font_attributes":603}],732:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124813,7 +126596,7 @@ function getCdModule(calcdata, _module) {
+     return cdModule;
+ }
+ 
+-},{"../../plots/plots":647}],739:[function(require,module,exports){
++},{"../../plots/plots":641}],733:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124965,7 +126748,7 @@ function nextDefaultColor(index) {
+     return pieDefaultColors[index % pieDefaultColors.length];
+ }
+ 
+-},{"../../components/color":483,"./helpers":741,"fast-isnumeric":123,"tinycolor2":454}],740:[function(require,module,exports){
++},{"../../components/color":477,"./helpers":735,"fast-isnumeric":98,"tinycolor2":442}],734:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125049,7 +126832,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     coerce('pull');
+ };
+ 
+-},{"../../lib":567,"./attributes":737}],741:[function(require,module,exports){
++},{"../../lib":561,"./attributes":731}],735:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125078,7 +126861,7 @@ exports.formatPieValue = function formatPieValue(v, separators) {
+     return Lib.numSeparate(vRounded, separators);
+ };
+ 
+-},{"../../lib":567}],742:[function(require,module,exports){
++},{"../../lib":561}],736:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125114,7 +126897,7 @@ Pie.meta = {
+ 
+ module.exports = Pie;
+ 
+-},{"./attributes":737,"./base_plot":738,"./calc":739,"./defaults":740,"./layout_attributes":743,"./layout_defaults":744,"./plot":745,"./style":746,"./style_one":747}],743:[function(require,module,exports){
++},{"./attributes":731,"./base_plot":732,"./calc":733,"./defaults":734,"./layout_attributes":737,"./layout_defaults":738,"./plot":739,"./style":740,"./style_one":741}],737:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125134,7 +126917,7 @@ module.exports = {
+     hiddenlabels: {valType: 'data_array'}
+ };
+ 
+-},{}],744:[function(require,module,exports){
++},{}],738:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125156,7 +126939,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut) {
+     coerce('hiddenlabels');
+ };
+ 
+-},{"../../lib":567,"./layout_attributes":743}],745:[function(require,module,exports){
++},{"../../lib":561,"./layout_attributes":737}],739:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125851,7 +127634,7 @@ function maxExtent(tilt, tiltAxisFraction, depth) {
+         2 * Math.sqrt(1 - sinTilt * sinTilt * tiltAxisFraction * tiltAxisFraction));
+ }
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"../../lib/svg_text_utils":580,"../../plots/cartesian/graph_interact":598,"./helpers":741,"d3":119}],746:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"../../lib/svg_text_utils":574,"../../plots/cartesian/graph_interact":592,"./helpers":735,"d3":90}],740:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125880,7 +127663,7 @@ module.exports = function style(gd) {
+     });
+ };
+ 
+-},{"./style_one":747,"d3":119}],747:[function(require,module,exports){
++},{"./style_one":741,"d3":90}],741:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125907,7 +127690,7 @@ module.exports = function styleOne(s, pt, trace) {
+     .call(Color.stroke, lineColor);
+ };
+ 
+-},{"../../components/color":483}],748:[function(require,module,exports){
++},{"../../components/color":477}],742:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125945,7 +127728,7 @@ module.exports = function arraysToCalcdata(cd) {
+     }
+ };
+ 
+-},{"../../lib":567}],749:[function(require,module,exports){
++},{"../../lib":561}],743:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126295,7 +128078,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../components/drawing":506,"../../lib/extend":562,"./constants":754}],750:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../components/drawing":500,"../../lib/extend":556,"./constants":748}],744:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126422,7 +128205,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"./colorscale_calc":753,"./subtypes":768,"fast-isnumeric":123}],751:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"./colorscale_calc":747,"./subtypes":762,"fast-isnumeric":98}],745:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126463,7 +128246,7 @@ module.exports = function cleanData(fullData) {
+     }
+ };
+ 
+-},{}],752:[function(require,module,exports){
++},{}],746:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126516,7 +128299,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(marker.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":486,"../../components/colorscale/get_scale":495,"../../lib":567,"../../plots/plots":647,"d3":119,"fast-isnumeric":123}],753:[function(require,module,exports){
++},{"../../components/colorbar/draw":480,"../../components/colorscale/get_scale":489,"../../lib":561,"../../plots/plots":641,"d3":90,"fast-isnumeric":98}],747:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126549,7 +128332,7 @@ module.exports = function calcMarkerColorscale(trace) {
+     }
+ };
+ 
+-},{"../../components/colorscale/calc":490,"../../components/colorscale/has_colorscale":496,"./subtypes":768}],754:[function(require,module,exports){
++},{"../../components/colorscale/calc":484,"../../components/colorscale/has_colorscale":490,"./subtypes":762}],748:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126565,7 +128348,7 @@ module.exports = {
+     PTS_LINESONLY: 20
+ };
+ 
+-},{}],755:[function(require,module,exports){
++},{}],749:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126643,7 +128426,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'y'});
+ };
+ 
+-},{"../../components/errorbars/defaults":511,"../../lib":567,"./attributes":749,"./constants":754,"./fillcolor_defaults":756,"./line_defaults":760,"./line_shape_defaults":762,"./marker_defaults":764,"./subtypes":768,"./text_defaults":769,"./xy_defaults":770}],756:[function(require,module,exports){
++},{"../../components/errorbars/defaults":505,"../../lib":561,"./attributes":743,"./constants":748,"./fillcolor_defaults":750,"./line_defaults":754,"./line_shape_defaults":756,"./marker_defaults":758,"./subtypes":762,"./text_defaults":763,"./xy_defaults":764}],750:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126682,7 +128465,7 @@ module.exports = function fillColorDefaults(traceIn, traceOut, defaultColor, coe
+     ));
+ };
+ 
+-},{"../../components/color":483}],757:[function(require,module,exports){
++},{"../../components/color":477}],751:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126735,7 +128518,7 @@ module.exports = function getTraceColor(trace, di) {
+     }
+ };
+ 
+-},{"../../components/color":483,"./subtypes":768}],758:[function(require,module,exports){
++},{"../../components/color":477,"./subtypes":762}],752:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126904,7 +128687,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     }
+ };
+ 
+-},{"../../components/color":483,"../../components/errorbars":512,"../../lib":567,"../../plots/cartesian/constants":596,"../../plots/cartesian/graph_interact":598,"./get_trace_color":757}],759:[function(require,module,exports){
++},{"../../components/color":477,"../../components/errorbars":506,"../../lib":561,"../../plots/cartesian/constants":590,"../../plots/cartesian/graph_interact":592,"./get_trace_color":751}],753:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126953,7 +128736,7 @@ Scatter.meta = {
+ 
+ module.exports = Scatter;
+ 
+-},{"../../plots/cartesian":599,"./arrays_to_calcdata":748,"./attributes":749,"./calc":750,"./clean_data":751,"./colorbar":752,"./defaults":755,"./hover":758,"./plot":765,"./select":766,"./style":767,"./subtypes":768}],760:[function(require,module,exports){
++},{"../../plots/cartesian":593,"./arrays_to_calcdata":742,"./attributes":743,"./calc":744,"./clean_data":745,"./colorbar":746,"./defaults":749,"./hover":752,"./plot":759,"./select":760,"./style":761,"./subtypes":762}],754:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126986,7 +128769,7 @@ module.exports = function lineDefaults(traceIn, traceOut, defaultColor, layout,
+     coerce('line.dash');
+ };
+ 
+-},{"../../components/colorscale/defaults":493,"../../components/colorscale/has_colorscale":496}],761:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487,"../../components/colorscale/has_colorscale":490}],755:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127155,7 +128938,7 @@ module.exports = function linePoints(d, opts) {
+     return segments;
+ };
+ 
+-},{"../../plots/cartesian/axes":591}],762:[function(require,module,exports){
++},{"../../plots/cartesian/axes":585}],756:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127174,7 +128957,7 @@ module.exports = function handleLineShapeDefaults(traceIn, traceOut, coerce) {
+     if(shape === 'spline') coerce('line.smoothing');
+ };
+ 
+-},{}],763:[function(require,module,exports){
++},{}],757:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127216,7 +128999,7 @@ module.exports = function makeBubbleSizeFn(trace) {
+     };
+ };
+ 
+-},{"fast-isnumeric":123}],764:[function(require,module,exports){
++},{"fast-isnumeric":98}],758:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127276,7 +129059,7 @@ module.exports = function markerDefaults(traceIn, traceOut, defaultColor, layout
+     }
+ };
+ 
+-},{"../../components/color":483,"../../components/colorscale/defaults":493,"../../components/colorscale/has_colorscale":496,"./subtypes":768}],765:[function(require,module,exports){
++},{"../../components/color":477,"../../components/colorscale/defaults":487,"../../components/colorscale/has_colorscale":490,"./subtypes":762}],759:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127569,7 +129352,7 @@ function selectMarkers(gd, plotinfo, cdscatter) {
+     });
+ }
+ 
+-},{"../../components/drawing":506,"../../components/errorbars":512,"../../lib":567,"../../lib/polygon":573,"./arrays_to_calcdata":748,"./line_points":761,"./subtypes":768,"d3":119}],766:[function(require,module,exports){
++},{"../../components/drawing":500,"../../components/errorbars":506,"../../lib":561,"../../lib/polygon":567,"./arrays_to_calcdata":742,"./line_points":755,"./subtypes":762,"d3":90}],760:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127640,7 +129423,7 @@ module.exports = function selectPoints(searchInfo, polygon) {
+     return selection;
+ };
+ 
+-},{"./subtypes":768}],767:[function(require,module,exports){
++},{"./subtypes":762}],761:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127682,7 +129465,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/drawing":506,"../../components/errorbars":512,"d3":119}],768:[function(require,module,exports){
++},{"../../components/drawing":500,"../../components/errorbars":506,"d3":90}],762:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127718,7 +129501,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib":567}],769:[function(require,module,exports){
++},{"../../lib":561}],763:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127739,7 +129522,7 @@ module.exports = function(traceIn, traceOut, layout, coerce) {
+     Lib.coerceFont(coerce, 'textfont', layout.font);
+ };
+ 
+-},{"../../lib":567}],770:[function(require,module,exports){
++},{"../../lib":561}],764:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127784,7 +129567,7 @@ module.exports = function handleXYDefaults(traceIn, traceOut, coerce) {
+     return len;
+ };
+ 
+-},{}],771:[function(require,module,exports){
++},{}],765:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127941,7 +129724,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../constants/gl_markers":554,"../../lib/extend":562,"../scatter/attributes":749}],772:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../constants/gl_markers":548,"../../lib/extend":556,"../scatter/attributes":743}],766:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127970,7 +129753,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../scatter/arrays_to_calcdata":748,"../scatter/colorscale_calc":753}],773:[function(require,module,exports){
++},{"../scatter/arrays_to_calcdata":742,"../scatter/colorscale_calc":747}],767:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128041,7 +129824,7 @@ function calculateErrors(data, scaleFactor) {
+ 
+ module.exports = calculateErrors;
+ 
+-},{"../../components/errorbars/compute_error":510}],774:[function(require,module,exports){
++},{"../../components/errorbars/compute_error":504}],768:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128500,7 +130283,7 @@ function createLineWithMarkers(scene, data) {
+ 
+ module.exports = createLineWithMarkers;
+ 
+-},{"../../constants/gl3d_dashes":553,"../../constants/gl_markers":554,"../../lib":567,"../../lib/gl_format_color":565,"../../lib/str2rgbarray":579,"../scatter/make_bubble_size_func":763,"./calc_errors":773,"delaunay-triangulate":120,"gl-error3d":127,"gl-line3d":133,"gl-mesh3d":156,"gl-scatter3d":199}],775:[function(require,module,exports){
++},{"../../constants/gl3d_dashes":547,"../../constants/gl_markers":548,"../../lib":561,"../../lib/gl_format_color":559,"../../lib/str2rgbarray":573,"../scatter/make_bubble_size_func":757,"./calc_errors":767,"delaunay-triangulate":91,"gl-error3d":126,"gl-line3d":133,"gl-mesh3d":166,"gl-scatter3d":186}],769:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128585,7 +130368,7 @@ function handleXYZDefaults(traceIn, traceOut, coerce) {
+     return len;
+ }
+ 
+-},{"../../components/errorbars/defaults":511,"../../lib":567,"../scatter/line_defaults":760,"../scatter/marker_defaults":764,"../scatter/subtypes":768,"../scatter/text_defaults":769,"./attributes":771}],776:[function(require,module,exports){
++},{"../../components/errorbars/defaults":505,"../../lib":561,"../scatter/line_defaults":754,"../scatter/marker_defaults":758,"../scatter/subtypes":762,"../scatter/text_defaults":763,"./attributes":765}],770:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128623,7 +130406,7 @@ Scatter3D.meta = {
+ 
+ module.exports = Scatter3D;
+ 
+-},{"../../constants/gl_markers":554,"../../plots/gl3d":627,"../scatter/colorbar":752,"./attributes":771,"./calc":772,"./convert":774,"./defaults":775}],777:[function(require,module,exports){
++},{"../../constants/gl_markers":548,"../../plots/gl3d":621,"../scatter/colorbar":746,"./attributes":765,"./calc":766,"./convert":768,"./defaults":769}],771:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128712,7 +130495,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../lib/extend":562,"../../plots/attributes":589,"../scatter/attributes":749}],778:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../lib/extend":556,"../../plots/attributes":583,"../scatter/attributes":743}],772:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128735,7 +130518,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../scatter/colorscale_calc":753}],779:[function(require,module,exports){
++},{"../scatter/colorscale_calc":747}],773:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128808,7 +130591,7 @@ function handleLonLatLocDefaults(traceIn, traceOut, coerce) {
+     return len;
+ }
+ 
+-},{"../../lib":567,"../scatter/line_defaults":760,"../scatter/marker_defaults":764,"../scatter/subtypes":768,"../scatter/text_defaults":769,"./attributes":777}],780:[function(require,module,exports){
++},{"../../lib":561,"../scatter/line_defaults":754,"../scatter/marker_defaults":758,"../scatter/subtypes":762,"../scatter/text_defaults":763,"./attributes":771}],774:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128843,7 +130626,7 @@ ScatterGeo.meta = {
+ 
+ module.exports = ScatterGeo;
+ 
+-},{"../../plots/geo":612,"../scatter/colorbar":752,"./attributes":777,"./calc":778,"./defaults":779,"./plot":781}],781:[function(require,module,exports){
++},{"../../plots/geo":606,"../scatter/colorbar":746,"./attributes":771,"./calc":772,"./defaults":773,"./plot":775}],775:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129143,7 +130926,7 @@ function makeEventDataFunc(trace) {
+     };
+ }
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"../../lib/array_to_calc_item":558,"../../lib/geo_location_utils":564,"../../lib/topojson_utils":581,"../../plots/cartesian/axes":591,"../../plots/cartesian/graph_interact":598,"../scatter/subtypes":768,"./attributes":777,"d3":119}],782:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"../../lib/array_to_calc_item":552,"../../lib/geo_location_utils":558,"../../lib/topojson_utils":575,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592,"../scatter/subtypes":762,"./attributes":771,"d3":90}],776:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129233,7 +131016,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../constants/gl2d_dashes":552,"../../constants/gl_markers":554,"../../lib/extend":562,"../scatter/attributes":749}],783:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../constants/gl2d_dashes":546,"../../constants/gl_markers":548,"../../lib/extend":556,"../scatter/attributes":743}],777:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129825,7 +131608,7 @@ function createLineWithMarkers(scene, data) {
+ 
+ module.exports = createLineWithMarkers;
+ 
+-},{"../../components/errorbars":512,"../../constants/gl2d_dashes":552,"../../constants/gl_markers":554,"../../lib":567,"../../lib/gl_format_color":565,"../../lib/str2rgbarray":579,"../../plots/cartesian/axes":591,"../scatter/get_trace_color":757,"../scatter/make_bubble_size_func":763,"../scatter/subtypes":768,"fast-isnumeric":123,"gl-error2d":125,"gl-line2d":131,"gl-scatter2d":196,"gl-scatter2d-fancy":191}],784:[function(require,module,exports){
++},{"../../components/errorbars":506,"../../constants/gl2d_dashes":546,"../../constants/gl_markers":548,"../../lib":561,"../../lib/gl_format_color":559,"../../lib/str2rgbarray":573,"../../plots/cartesian/axes":585,"../scatter/get_trace_color":751,"../scatter/make_bubble_size_func":757,"../scatter/subtypes":762,"fast-isnumeric":98,"gl-error2d":124,"gl-line2d":131,"gl-scatter2d":183,"gl-scatter2d-fancy":178}],778:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129882,7 +131665,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'y'});
+ };
+ 
+-},{"../../components/errorbars/defaults":511,"../../lib":567,"../scatter/constants":754,"../scatter/fillcolor_defaults":756,"../scatter/line_defaults":760,"../scatter/marker_defaults":764,"../scatter/subtypes":768,"../scatter/xy_defaults":770,"./attributes":782}],785:[function(require,module,exports){
++},{"../../components/errorbars/defaults":505,"../../lib":561,"../scatter/constants":748,"../scatter/fillcolor_defaults":750,"../scatter/line_defaults":754,"../scatter/marker_defaults":758,"../scatter/subtypes":762,"../scatter/xy_defaults":764,"./attributes":776}],779:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129918,7 +131701,7 @@ ScatterGl.meta = {
+ 
+ module.exports = ScatterGl;
+ 
+-},{"../../plots/gl2d":624,"../scatter/colorbar":752,"../scatter3d/calc":772,"./attributes":782,"./convert":783,"./defaults":784}],786:[function(require,module,exports){
++},{"../../plots/gl2d":618,"../scatter/colorbar":746,"../scatter3d/calc":766,"./attributes":776,"./convert":777,"./defaults":778}],780:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130038,7 +131821,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/attributes":589,"../../plots/mapbox/layout_attributes":644,"../scatter/attributes":749,"../scattergeo/attributes":777}],787:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/attributes":583,"../../plots/mapbox/layout_attributes":638,"../scatter/attributes":743,"../scattergeo/attributes":771}],781:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130135,7 +131918,7 @@ module.exports = function calc(gd, trace) {
+     return calcTrace;
+ };
+ 
+-},{"../../components/colorscale/has_colorscale":496,"../../components/colorscale/make_scale_function":500,"../../lib":567,"../scatter/colorscale_calc":753,"../scatter/make_bubble_size_func":763,"../scatter/subtypes":768,"fast-isnumeric":123}],788:[function(require,module,exports){
++},{"../../components/colorscale/has_colorscale":490,"../../components/colorscale/make_scale_function":494,"../../lib":561,"../scatter/colorscale_calc":747,"../scatter/make_bubble_size_func":757,"../scatter/subtypes":762,"fast-isnumeric":98}],782:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130486,7 +132269,7 @@ function getFillFunc(attr) {
+ 
+ function blankFillFunc() { return ''; }
+ 
+-},{"../../lib":567,"../../plots/mapbox/convert_text_opts":641,"../scatter/subtypes":768}],789:[function(require,module,exports){
++},{"../../lib":561,"../../plots/mapbox/convert_text_opts":635,"../scatter/subtypes":762}],783:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130574,7 +132357,7 @@ function handleLonLatDefaults(traceIn, traceOut, coerce) {
+     return len;
+ }
+ 
+-},{"../../lib":567,"../scatter/attributes":749,"../scatter/fillcolor_defaults":756,"../scatter/line_defaults":760,"../scatter/marker_defaults":764,"../scatter/subtypes":768,"../scatter/text_defaults":769,"./attributes":786}],790:[function(require,module,exports){
++},{"../../lib":561,"../scatter/attributes":743,"../scatter/fillcolor_defaults":750,"../scatter/line_defaults":754,"../scatter/marker_defaults":758,"../scatter/subtypes":762,"../scatter/text_defaults":763,"./attributes":780}],784:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130667,7 +132450,7 @@ function getExtraText(trace, di) {
+     return text.join('<br>');
+ }
+ 
+-},{"../../plots/cartesian/graph_interact":598,"../scatter/get_trace_color":757}],791:[function(require,module,exports){
++},{"../../plots/cartesian/graph_interact":592,"../scatter/get_trace_color":751}],785:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130703,7 +132486,7 @@ ScatterMapbox.meta = {
+ 
+ module.exports = ScatterMapbox;
+ 
+-},{"../../plots/mapbox":642,"../scatter/colorbar":752,"./attributes":786,"./calc":787,"./defaults":789,"./hover":790,"./plot":792}],792:[function(require,module,exports){
++},{"../../plots/mapbox":636,"../scatter/colorbar":746,"./attributes":780,"./calc":781,"./defaults":783,"./hover":784,"./plot":786}],786:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130835,7 +132618,7 @@ module.exports = function createScatterMapbox(mapbox, calcTrace) {
+     return scatterMapbox;
+ };
+ 
+-},{"./convert":788}],793:[function(require,module,exports){
++},{"./convert":782}],787:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130961,7 +132744,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../lib/extend":562,"../../plots/attributes":589,"../scatter/attributes":749}],794:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../lib/extend":556,"../../plots/attributes":583,"../scatter/attributes":743}],788:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -131060,7 +132843,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"../scatter/colorscale_calc":753,"../scatter/subtypes":768,"fast-isnumeric":123}],795:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"../scatter/colorscale_calc":747,"../scatter/subtypes":762,"fast-isnumeric":98}],789:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -131165,7 +132948,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     coerce('hoveron', dfltHoverOn.join('+') || 'points');
+ };
+ 
+-},{"../../lib":567,"../scatter/constants":754,"../scatter/fillcolor_defaults":756,"../scatter/line_defaults":760,"../scatter/line_shape_defaults":762,"../scatter/marker_defaults":764,"../scatter/subtypes":768,"../scatter/text_defaults":769,"./attributes":793}],796:[function(require,module,exports){
++},{"../../lib":561,"../scatter/constants":748,"../scatter/fillcolor_defaults":750,"../scatter/line_defaults":754,"../scatter/line_shape_defaults":756,"../scatter/marker_defaults":758,"../scatter/subtypes":762,"../scatter/text_defaults":763,"./attributes":787}],790:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -131236,7 +133019,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     return scatterPointData;
+ };
+ 
+-},{"../../plots/cartesian/axes":591,"../scatter/hover":758}],797:[function(require,module,exports){
++},{"../../plots/cartesian/axes":585,"../scatter/hover":752}],791:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -131272,7 +133055,7 @@ ScatterTernary.meta = {
+ 
+ module.exports = ScatterTernary;
+ 
+-},{"../../plots/ternary":654,"../scatter/colorbar":752,"./attributes":793,"./calc":794,"./defaults":795,"./hover":796,"./plot":798,"./select":799,"./style":800}],798:[function(require,module,exports){
++},{"../../plots/ternary":648,"../scatter/colorbar":746,"./attributes":787,"./calc":788,"./defaults":789,"./hover":790,"./plot":792,"./select":793,"./style":794}],792:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -131318,7 +133101,7 @@ module.exports = function plot(ternary, data) {
+     scatterPlot(ternary.graphDiv, plotinfo, calcdata);
+ };
+ 
+-},{"../scatter/plot":765}],799:[function(require,module,exports){
++},{"../scatter/plot":759}],793:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -131353,7 +133136,7 @@ module.exports = function selectPoints(searchInfo, polygon) {
+     return selection;
+ };
+ 
+-},{"../scatter/select":766}],800:[function(require,module,exports){
++},{"../scatter/select":760}],794:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -131382,7 +133165,7 @@ module.exports = function style(gd) {
+     scatterStyle(gd);
+ };
+ 
+-},{"../scatter/style":767}],801:[function(require,module,exports){
++},{"../scatter/style":761}],795:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -131630,7 +133413,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/color":483,"../../components/colorscale/attributes":489,"../../lib/extend":562}],802:[function(require,module,exports){
++},{"../../components/color":477,"../../components/colorscale/attributes":483,"../../lib/extend":556}],796:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -131654,7 +133437,7 @@ module.exports = function calc(gd, trace) {
+     }
+ };
+ 
+-},{"../../components/colorscale/calc":490}],803:[function(require,module,exports){
++},{"../../components/colorscale/calc":484}],797:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -131701,7 +133484,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(trace.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":486,"../../components/colorscale/get_scale":495,"../../lib":567,"../../plots/plots":647,"d3":119,"fast-isnumeric":123}],804:[function(require,module,exports){
++},{"../../components/colorbar/draw":480,"../../components/colorscale/get_scale":489,"../../lib":561,"../../plots/plots":641,"d3":90,"fast-isnumeric":98}],798:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -132064,7 +133847,7 @@ function createSurfaceTrace(scene, data) {
+ 
+ module.exports = createSurfaceTrace;
+ 
+-},{"../../lib/str2rgbarray":579,"gl-surface3d":227,"ndarray":433,"ndarray-fill":426,"ndarray-homography":431,"ndarray-ops":432,"tinycolor2":454}],805:[function(require,module,exports){
++},{"../../lib/str2rgbarray":573,"gl-surface3d":201,"ndarray":385,"ndarray-fill":375,"ndarray-homography":377,"ndarray-ops":379,"tinycolor2":442}],799:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -132181,7 +133964,7 @@ function mapLegacy(traceIn, oldAttr, newAttr) {
+     }
+ }
+ 
+-},{"../../components/colorscale/defaults":493,"../../lib":567,"./attributes":801}],806:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487,"../../lib":561,"./attributes":795}],800:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -132224,5 +134007,5 @@ Surface.meta = {
+ 
+ module.exports = Surface;
+ 
+-},{"../../plots/gl3d":627,"./attributes":801,"./calc":802,"./colorbar":803,"./convert":804,"./defaults":805}]},{},[12])(12)
++},{"../../plots/gl3d":621,"./attributes":795,"./calc":796,"./colorbar":797,"./convert":798,"./defaults":799}]},{},[12])(12)
+ });
+\ No newline at end of file
+diff --git a/dist/plotly.js b/dist/plotly.js
+index 9bde16e..2a37a7e 100644
+--- a/dist/plotly.js
++++ b/dist/plotly.js
+@@ -68,7 +68,7 @@ for(var selector in rules) {
+     Plotly.Lib.addStyleRule(fullSelector, rules[selector]);
+ }
+ 
+-},{"../src/plotly":588}],2:[function(require,module,exports){
++},{"../src/plotly":582}],2:[function(require,module,exports){
+ 'use strict';
+ 
+ module.exports = {
+@@ -199,7 +199,7 @@ module.exports = {
+ 
+ module.exports = require('../src/traces/bar');
+ 
+-},{"../src/traces/bar":673}],4:[function(require,module,exports){
++},{"../src/traces/bar":667}],4:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -210,7 +210,7 @@ module.exports = require('../src/traces/bar');
+ 
+ module.exports = require('../src/traces/box');
+ 
+-},{"../src/traces/box":684}],5:[function(require,module,exports){
++},{"../src/traces/box":678}],5:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -221,7 +221,7 @@ module.exports = require('../src/traces/box');
+ 
+ module.exports = require('../src/traces/choropleth');
+ 
+-},{"../src/traces/choropleth":693}],6:[function(require,module,exports){
++},{"../src/traces/choropleth":687}],6:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -232,7 +232,7 @@ module.exports = require('../src/traces/choropleth');
+ 
+ module.exports = require('../src/traces/contour');
+ 
+-},{"../src/traces/contour":700}],7:[function(require,module,exports){
++},{"../src/traces/contour":694}],7:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -243,7 +243,7 @@ module.exports = require('../src/traces/contour');
+ 
+ module.exports = require('../src/core');
+ 
+-},{"../src/core":556}],8:[function(require,module,exports){
++},{"../src/core":550}],8:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -254,7 +254,7 @@ module.exports = require('../src/core');
+ 
+ module.exports = require('../src/traces/heatmap');
+ 
+-},{"../src/traces/heatmap":712}],9:[function(require,module,exports){
++},{"../src/traces/heatmap":706}],9:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -265,7 +265,7 @@ module.exports = require('../src/traces/heatmap');
+ 
+ module.exports = require('../src/traces/histogram');
+ 
+-},{"../src/traces/histogram":723}],10:[function(require,module,exports){
++},{"../src/traces/histogram":717}],10:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -276,7 +276,7 @@ module.exports = require('../src/traces/histogram');
+ 
+ module.exports = require('../src/traces/histogram2d');
+ 
+-},{"../src/traces/histogram2d":728}],11:[function(require,module,exports){
++},{"../src/traces/histogram2d":722}],11:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -287,7 +287,7 @@ module.exports = require('../src/traces/histogram2d');
+ 
+ module.exports = require('../src/traces/histogram2dcontour');
+ 
+-},{"../src/traces/histogram2dcontour":732}],12:[function(require,module,exports){
++},{"../src/traces/histogram2dcontour":726}],12:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -332,7 +332,7 @@ module.exports = Plotly;
+ 
+ module.exports = require('../src/traces/mesh3d');
+ 
+-},{"../src/traces/mesh3d":736}],14:[function(require,module,exports){
++},{"../src/traces/mesh3d":730}],14:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -343,7 +343,7 @@ module.exports = require('../src/traces/mesh3d');
+ 
+ module.exports = require('../src/traces/pie');
+ 
+-},{"../src/traces/pie":742}],15:[function(require,module,exports){
++},{"../src/traces/pie":736}],15:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -354,7 +354,7 @@ module.exports = require('../src/traces/pie');
+ 
+ module.exports = require('../src/traces/scatter3d');
+ 
+-},{"../src/traces/scatter3d":776}],16:[function(require,module,exports){
++},{"../src/traces/scatter3d":770}],16:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -365,7 +365,7 @@ module.exports = require('../src/traces/scatter3d');
+ 
+ module.exports = require('../src/traces/scattergeo');
+ 
+-},{"../src/traces/scattergeo":780}],17:[function(require,module,exports){
++},{"../src/traces/scattergeo":774}],17:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -376,7 +376,7 @@ module.exports = require('../src/traces/scattergeo');
+ 
+ module.exports = require('../src/traces/scattergl');
+ 
+-},{"../src/traces/scattergl":785}],18:[function(require,module,exports){
++},{"../src/traces/scattergl":779}],18:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -387,7 +387,7 @@ module.exports = require('../src/traces/scattergl');
+ 
+ module.exports = require('../src/traces/scattermapbox');
+ 
+-},{"../src/traces/scattermapbox":791}],19:[function(require,module,exports){
++},{"../src/traces/scattermapbox":785}],19:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -398,7 +398,7 @@ module.exports = require('../src/traces/scattermapbox');
+ 
+ module.exports = require('../src/traces/scatterternary');
+ 
+-},{"../src/traces/scatterternary":797}],20:[function(require,module,exports){
++},{"../src/traces/scatterternary":791}],20:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -409,12945 +409,10064 @@ module.exports = require('../src/traces/scatterternary');
+ 
+ module.exports = require('../src/traces/surface');
+ 
+-},{"../src/traces/surface":806}],21:[function(require,module,exports){
++},{"../src/traces/surface":800}],21:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createFilteredVector
++module.exports = createCamera
+ 
+-var cubicHermite = require('cubic-hermite')
+-var bsearch = require('binary-search-bounds')
++var now         = require('right-now')
++var createView  = require('3d-view')
++var mouseChange = require('mouse-change')
++var mouseWheel  = require('mouse-wheel')
+ 
+-function clamp(lo, hi, x) {
+-  return Math.min(hi, Math.max(lo, x))
+-}
++function createCamera(element, options) {
++  element = element || document.body
++  options = options || {}
+ 
+-function FilteredVector(state0, velocity0, t0) {
+-  this.dimension  = state0.length
+-  this.bounds     = [ new Array(this.dimension), new Array(this.dimension) ]
+-  for(var i=0; i<this.dimension; ++i) {
+-    this.bounds[0][i] = -Infinity
+-    this.bounds[1][i] = Infinity
++  var limits  = [ 0.01, Infinity ]
++  if('distanceLimits' in options) {
++    limits[0] = options.distanceLimits[0]
++    limits[1] = options.distanceLimits[1]
++  }
++  if('zoomMin' in options) {
++    limits[0] = options.zoomMin
++  }
++  if('zoomMax' in options) {
++    limits[1] = options.zoomMax
+   }
+-  this._state     = state0.slice().reverse()
+-  this._velocity  = velocity0.slice().reverse()
+-  this._time      = [ t0 ]
+-  this._scratch   = [ state0.slice(), state0.slice(), state0.slice(), state0.slice(), state0.slice() ]
+-}
+ 
+-var proto = FilteredVector.prototype
++  var view = createView({
++    center: options.center || [0,0,0],
++    up:     options.up     || [0,1,0],
++    eye:    options.eye    || [0,0,10],
++    mode:   options.mode   || 'orbit',
++    distanceLimits: limits
++  })
+ 
+-proto.flush = function(t) {
+-  var idx = bsearch.gt(this._time, t) - 1
+-  if(idx <= 0) {
+-    return
+-  }
+-  this._time.splice(0, idx)
+-  this._state.splice(0, idx * this.dimension)
+-  this._velocity.splice(0, idx * this.dimension)
+-}
++  var pmatrix = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
++  var distance = 0.0
++  var width   = element.clientWidth
++  var height  = element.clientHeight
+ 
+-proto.curve = function(t) {
+-  var time      = this._time
+-  var n         = time.length
+-  var idx       = bsearch.le(time, t)
+-  var result    = this._scratch[0]
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var d         = this.dimension
+-  var bounds    = this.bounds
+-  if(idx < 0) {
+-    var ptr = d-1
+-    for(var i=0; i<d; ++i, --ptr) {
+-      result[i] = state[ptr]
+-    }
+-  } else if(idx >= n-1) {
+-    var ptr = state.length-1
+-    var tf = t - time[n-1]
+-    for(var i=0; i<d; ++i, --ptr) {
+-      result[i] = state[ptr] + tf * velocity[ptr]
+-    }
+-  } else {
+-    var ptr = d * (idx+1) - 1
+-    var t0  = time[idx]
+-    var t1  = time[idx+1]
+-    var dt  = (t1 - t0) || 1.0
+-    var x0  = this._scratch[1]
+-    var x1  = this._scratch[2]
+-    var v0  = this._scratch[3]
+-    var v1  = this._scratch[4]
+-    var steady = true
+-    for(var i=0; i<d; ++i, --ptr) {
+-      x0[i] = state[ptr]
+-      v0[i] = velocity[ptr] * dt
+-      x1[i] = state[ptr+d]
+-      v1[i] = velocity[ptr+d] * dt
+-      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
+-    }
+-    if(steady) {
+-      for(var i=0; i<d; ++i) {
+-        result[i] = x0[i]
++  var camera = {
++    view:               view,
++    element:            element,
++    delay:              options.delay          || 16,
++    rotateSpeed:        options.rotateSpeed    || 1,
++    zoomSpeed:          options.zoomSpeed      || 1,
++    translateSpeed:     options.translateSpeed || 1,
++    flipX:              !!options.flipX,
++    flipY:              !!options.flipY,
++    modes:              view.modes,
++    tick: function() {
++      var t = now()
++      var delay = this.delay
++      view.idle(t-delay)
++      view.flush(t-(100+delay*2))
++      var ctime = t - 2 * delay
++      view.recalcMatrix(ctime)
++      var allEqual = true
++      var matrix = view.computedMatrix
++      for(var i=0; i<16; ++i) {
++        allEqual = allEqual && (pmatrix[i] === matrix[i])
++        pmatrix[i] = matrix[i]
+       }
+-    } else {
+-      cubicHermite(x0, v0, x1, v1, (t-t0)/dt, result)
++      var sizeChanged = 
++          element.clientWidth === width && 
++          element.clientHeight === height
++      width  = element.clientWidth
++      height = element.clientHeight
++      if(allEqual) {
++        return !sizeChanged
++      }
++      distance = Math.exp(view.computedRadius[0])
++      return true
++    },
++    lookAt: function(center, eye, up) {
++      view.lookAt(view.lastT(), center, eye, up)
++    },
++    rotate: function(pitch, yaw, roll) {
++      view.rotate(view.lastT(), pitch, yaw, roll)
++    },
++    pan: function(dx, dy, dz) {
++      view.pan(view.lastT(), dx, dy, dz)
++    },
++    translate: function(dx, dy, dz) {
++      view.translate(view.lastT(), dx, dy, dz)
+     }
+   }
+-  var lo = bounds[0]
+-  var hi = bounds[1]
+-  for(var i=0; i<d; ++i) {
+-    result[i] = clamp(lo[i], hi[i], result[i])
+-  }
+-  return result
+-}
+ 
+-proto.dcurve = function(t) {
+-  var time     = this._time
+-  var n        = time.length
+-  var idx      = bsearch.le(time, t)
+-  var result   = this._scratch[0]
+-  var state    = this._state
+-  var velocity = this._velocity
+-  var d        = this.dimension
+-  if(idx >= n-1) {
+-    var ptr = state.length-1
+-    var tf = t - time[n-1]
+-    for(var i=0; i<d; ++i, --ptr) {
+-      result[i] = velocity[ptr]
+-    }
+-  } else {
+-    var ptr = d * (idx+1) - 1
+-    var t0 = time[idx]
+-    var t1 = time[idx+1]
+-    var dt = (t1 - t0) || 1.0
+-    var x0 = this._scratch[1]
+-    var x1 = this._scratch[2]
+-    var v0 = this._scratch[3]
+-    var v1 = this._scratch[4]
+-    var steady = true
+-    for(var i=0; i<d; ++i, --ptr) {
+-      x0[i] = state[ptr]
+-      v0[i] = velocity[ptr] * dt
+-      x1[i] = state[ptr+d]
+-      v1[i] = velocity[ptr+d] * dt
+-      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
++  Object.defineProperties(camera, {
++    matrix: {
++      get: function() {
++        return view.computedMatrix
++      },
++      set: function(mat) {
++        view.setMatrix(view.lastT(), mat)
++        return view.computedMatrix
++      },
++      enumerable: true
++    },
++    mode: {
++      get: function() {
++        return view.getMode()
++      },
++      set: function(mode) {
++        view.setMode(mode)
++        return view.getMode()
++      },
++      enumerable: true
++    },
++    center: {
++      get: function() {
++        return view.computedCenter
++      },
++      set: function(ncenter) {
++        view.lookAt(view.lastT(), ncenter)
++        return view.computedCenter
++      },
++      enumerable: true
++    },
++    eye: {
++      get: function() {
++        return view.computedEye
++      },
++      set: function(neye) {
++        view.lookAt(view.lastT(), null, neye)
++        return view.computedEye
++      },
++      enumerable: true
++    },
++    up: {
++      get: function() {
++        return view.computedUp
++      },
++      set: function(nup) {
++        view.lookAt(view.lastT(), null, null, nup)
++        return view.computedUp
++      },
++      enumerable: true
++    },
++    distance: {
++      get: function() {
++        return distance
++      },
++      set: function(d) {
++        view.setDistance(view.lastT(), d)
++        return d
++      },
++      enumerable: true
++    },
++    distanceLimits: {
++      get: function() {
++        return view.getDistanceLimits(limits)
++      },
++      set: function(v) {
++        view.setDistanceLimits(v)
++        return v
++      },
++      enumerable: true
+     }
+-    if(steady) {
+-      for(var i=0; i<d; ++i) {
+-        result[i] = 0.0
+-      }
+-    } else {
+-      cubicHermite.derivative(x0, v0, x1, v1, (t-t0)/dt, result)
+-      for(var i=0; i<d; ++i) {
+-        result[i] /= dt
++  })
++  
++  element.addEventListener('contextmenu', function(ev) {
++    ev.preventDefault()
++    return false
++  })
++
++  var lastX = 0, lastY = 0
++  mouseChange(element, function(buttons, x, y, mods) {
++    var scale = 1.0 / element.clientHeight
++    var dx    = scale * (x - lastX)
++    var dy    = scale * (y - lastY)
++
++    var flipX = camera.flipX ? 1 : -1
++    var flipY = camera.flipY ? 1 : -1
++
++    var drot  = Math.PI * camera.rotateSpeed
++
++    var t = now()
++
++    if(buttons & 1) {
++      if(mods.shift) {
++        view.rotate(t, 0, 0, -dx * drot)
++      } else {
++        view.rotate(t, flipX * drot * dx, -flipY * drot * dy, 0)
+       }
++    } else if(buttons & 2) {
++      view.pan(t, -camera.translateSpeed * dx * distance, camera.translateSpeed * dy * distance, 0)
++    } else if(buttons & 4) {
++      var kzoom = camera.zoomSpeed * dy / window.innerHeight * (t - view.lastT()) * 50.0
++      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
+     }
+-  }
+-  return result
+-}
+ 
+-proto.lastT = function() {
+-  var time = this._time
+-  return time[time.length-1]
+-}
++    lastX = x
++    lastY = y
++  })
+ 
+-proto.stable = function() {
+-  var velocity = this._velocity
+-  var ptr = velocity.length
+-  for(var i=this.dimension-1; i>=0; --i) {
+-    if(velocity[--ptr]) {
+-      return false
++  mouseWheel(element, function(dx, dy, dz) {
++    var flipX = camera.flipX ? 1 : -1
++    var flipY = camera.flipY ? 1 : -1
++    var t = now()
++    if(Math.abs(dx) > Math.abs(dy)) {
++      view.rotate(t, 0, 0, -dx * flipX * Math.PI * camera.rotateSpeed / window.innerWidth)
++    } else {
++      var kzoom = camera.zoomSpeed * flipY * dy / window.innerHeight * (t - view.lastT()) / 100.0
++      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
+     }
+-  }
+-  return true
++  }, true)
++
++  return camera
+ }
++},{"3d-view":22,"mouse-change":371,"mouse-wheel":373,"right-now":412}],22:[function(require,module,exports){
++'use strict'
+ 
+-proto.jump = function(t) {
+-  var t0 = this.lastT()
+-  var d  = this.dimension
+-  if(t < t0 || arguments.length !== d+1) {
+-    return
+-  }
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var ptr       = state.length-this.dimension
+-  var bounds    = this.bounds
+-  var lo        = bounds[0]
+-  var hi        = bounds[1]
+-  this._time.push(t0, t)
+-  for(var j=0; j<2; ++j) {
+-    for(var i=0; i<d; ++i) {
+-      state.push(state[ptr++])
+-      velocity.push(0)
+-    }
+-  }
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
+-    velocity.push(0)
++module.exports = createViewController
++
++var createTurntable = require('turntable-camera-controller')
++var createOrbit     = require('orbit-camera-controller')
++var createMatrix    = require('matrix-camera-controller')
++
++function ViewController(controllers, mode) {
++  this._controllerNames = Object.keys(controllers)
++  this._controllerList = this._controllerNames.map(function(n) {
++    return controllers[n]
++  })
++  this._mode   = mode
++  this._active = controllers[mode]
++  if(!this._active) {
++    this._mode   = 'turntable'
++    this._active = controllers.turntable
+   }
++  this.modes = this._controllerNames
++  this.computedMatrix = this._active.computedMatrix
++  this.computedEye    = this._active.computedEye
++  this.computedUp     = this._active.computedUp
++  this.computedCenter = this._active.computedCenter
++  this.computedRadius = this._active.computedRadius
+ }
+ 
+-proto.push = function(t) {
+-  var t0 = this.lastT()
+-  var d  = this.dimension
+-  if(t < t0 || arguments.length !== d+1) {
+-    return
+-  }
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var ptr       = state.length-this.dimension
+-  var dt        = t - t0
+-  var bounds    = this.bounds
+-  var lo        = bounds[0]
+-  var hi        = bounds[1]
+-  var sf        = (dt > 1e-6) ? 1/dt : 0
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    var xc = clamp(lo[i-1], hi[i-1], arguments[i])
+-    state.push(xc)
+-    velocity.push((xc - state[ptr++]) * sf)
++var proto = ViewController.prototype
++
++var COMMON_METHODS = [
++  ['flush', 1],
++  ['idle', 1],
++  ['lookAt', 4],
++  ['rotate', 4],
++  ['pan', 4],
++  ['translate', 4],
++  ['setMatrix', 2],
++  ['setDistanceLimits', 2],
++  ['setDistance', 2]
++]
++
++COMMON_METHODS.forEach(function(method) {
++  var name = method[0]
++  var argNames = []
++  for(var i=0; i<method[1]; ++i) {
++    argNames.push('a'+i)
+   }
++  var code = 'var cc=this._controllerList;for(var i=0;i<cc.length;++i){cc[i].'+method[0]+'('+argNames.join()+')}'
++  proto[name] = Function.apply(null, argNames.concat(code))
++})
++
++proto.recalcMatrix = function(t) {
++  this._active.recalcMatrix(t)
+ }
+ 
+-proto.set = function(t) {
+-  var d = this.dimension
+-  if(t < this.lastT() || arguments.length !== d+1) {
+-    return
+-  }
+-  var state     = this._state
+-  var velocity  = this._velocity
+-  var bounds    = this.bounds
+-  var lo        = bounds[0]
+-  var hi        = bounds[1]
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
+-    velocity.push(0)
+-  }
++proto.getDistance = function(t) {
++  return this._active.getDistance(t)
++}
++proto.getDistanceLimits = function(out) {
++  return this._active.getDistanceLimits(out)
+ }
+ 
+-proto.move = function(t) {
+-  var t0 = this.lastT()
+-  var d  = this.dimension
+-  if(t <= t0 || arguments.length !== d+1) {
+-    return
+-  }
+-  var state    = this._state
+-  var velocity = this._velocity
+-  var statePtr = state.length - this.dimension
+-  var bounds   = this.bounds
+-  var lo       = bounds[0]
+-  var hi       = bounds[1]
+-  var dt       = t - t0
+-  var sf       = (dt > 1e-6) ? 1/dt : 0.0
+-  this._time.push(t)
+-  for(var i=d; i>0; --i) {
+-    var dx = arguments[i]
+-    state.push(clamp(lo[i-1], hi[i-1], state[statePtr++] + dx))
+-    velocity.push(dx * sf)
+-  }
++proto.lastT = function() {
++  return this._active.lastT()
+ }
+ 
+-proto.idle = function(t) {
+-  var t0 = this.lastT()
+-  if(t < t0) {
++proto.setMode = function(mode) {
++  if(mode === this._mode) {
+     return
+   }
+-  var d        = this.dimension
+-  var state    = this._state
+-  var velocity = this._velocity
+-  var statePtr = state.length-d
+-  var bounds   = this.bounds
+-  var lo       = bounds[0]
+-  var hi       = bounds[1]
+-  var dt       = t - t0
+-  this._time.push(t)
+-  for(var i=d-1; i>=0; --i) {
+-    state.push(clamp(lo[i], hi[i], state[statePtr] + dt * velocity[statePtr]))
+-    velocity.push(0)
+-    statePtr += 1
++  var idx = this._controllerNames.indexOf(mode)
++  if(idx < 0) {
++    return
+   }
++  var prev  = this._active
++  var next  = this._controllerList[idx]
++  var lastT = Math.max(prev.lastT(), next.lastT())
++
++  prev.recalcMatrix(lastT)
++  next.setMatrix(lastT, prev.computedMatrix)
++  
++  this._active = next
++  this._mode   = mode
++
++  //Update matrix properties
++  this.computedMatrix = this._active.computedMatrix
++  this.computedEye    = this._active.computedEye
++  this.computedUp     = this._active.computedUp
++  this.computedCenter = this._active.computedCenter
++  this.computedRadius = this._active.computedRadius
+ }
+ 
+-function getZero(d) {
+-  var result = new Array(d)
+-  for(var i=0; i<d; ++i) {
+-    result[i] = 0.0
+-  }
+-  return result
++proto.getMode = function() {
++  return this._mode
+ }
+ 
+-function createFilteredVector(initState, initVelocity, initTime) {
+-  switch(arguments.length) {
+-    case 0:
+-      return new FilteredVector([0], [0], 0)
+-    case 1:
+-      if(typeof initState === 'number') {
+-        var zero = getZero(initState)
+-        return new FilteredVector(zero, zero, 0)
+-      } else {
+-        return new FilteredVector(initState, getZero(initState.length), 0)
+-      }
+-    case 2:
+-      if(typeof initVelocity === 'number') {
+-        var zero = getZero(initState.length)
+-        return new FilteredVector(initState, zero, +initVelocity)
+-      } else {
+-        initTime = 0
+-      }
+-    case 3:
+-      if(initState.length !== initVelocity.length) {
+-        throw new Error('state and velocity lengths must match')
+-      }
+-      return new FilteredVector(initState, initVelocity, initTime)
+-  }
++function createViewController(options) {
++  options = options || {}
++
++  var eye       = options.eye    || [0,0,1]
++  var center    = options.center || [0,0,0]
++  var up        = options.up     || [0,1,0]
++  var limits    = options.distanceLimits || [0, Infinity]
++  var mode      = options.mode   || 'turntable'
++
++  var turntable = createTurntable()
++  var orbit     = createOrbit()
++  var matrix    = createMatrix()
++
++  turntable.setDistanceLimits(limits[0], limits[1])
++  turntable.lookAt(0, eye, center, up)
++  orbit.setDistanceLimits(limits[0], limits[1])
++  orbit.lookAt(0, eye, center, up)
++  matrix.setDistanceLimits(limits[0], limits[1])
++  matrix.lookAt(0, eye, center, up)
++
++  return new ViewController({
++    turntable: turntable,
++    orbit: orbit,
++    matrix: matrix
++  }, mode)
+ }
++},{"matrix-camera-controller":369,"orbit-camera-controller":389,"turntable-camera-controller":446}],23:[function(require,module,exports){
++'use strict'
+ 
+-},{"binary-search-bounds":22,"cubic-hermite":23}],22:[function(require,module,exports){
+-"use strict"
++var weakMap      = typeof WeakMap === 'undefined' ? require('weak-map') : WeakMap
++var createBuffer = require('gl-buffer')
++var createVAO    = require('gl-vao')
+ 
+-function compileSearch(funcName, predicate, reversed, extraArgs, useNdarray, earlyOut) {
+-  var code = [
+-    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
+-earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
+-";while(l<=h){\
+-var m=(l+h)>>>1,x=a", useNdarray ? ".get(m)" : "[m]"]
+-  if(earlyOut) {
+-    if(predicate.indexOf("c") < 0) {
+-      code.push(";if(x===y){return m}else if(x<=y){")
+-    } else {
+-      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
+-    }
+-  } else {
+-    code.push(";if(", predicate, "){i=m;")
+-  }
+-  if(reversed) {
+-    code.push("l=m+1}else{h=m-1}")
+-  } else {
+-    code.push("h=m-1}else{l=m+1}")
+-  }
+-  code.push("}")
+-  if(earlyOut) {
+-    code.push("return -1};")
+-  } else {
+-    code.push("return i};")
++var TriangleCache = new weakMap()
++
++function createABigTriangle(gl) {
++
++  var triangleVAO = TriangleCache.get(gl)
++  if(!triangleVAO || !gl.isBuffer(triangleVAO._triangleBuffer.buffer)) {
++    var buf = createBuffer(gl, new Float32Array([-1, -1, -1, 4, 4, -1]))
++    triangleVAO = createVAO(gl, [
++      { buffer: buf,
++        type: gl.FLOAT,
++        size: 2
++      }
++    ])
++    triangleVAO._triangleBuffer = buf
++    TriangleCache.set(gl, triangleVAO)
+   }
+-  return code.join("")
++  triangleVAO.bind()
++  gl.drawArrays(gl.TRIANGLES, 0, 3)
++  triangleVAO.unbind()
+ }
+ 
+-function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
+-  var result = new Function([
+-  compileSearch("A", "x" + predicate + "y", reversed, ["y"], false, earlyOut),
+-  compileSearch("B", "x" + predicate + "y", reversed, ["y"], true, earlyOut),
+-  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], false, earlyOut),
+-  compileSearch("Q", "c(x,y)" + predicate + "0", reversed, ["y", "c"], true, earlyOut),
+-"function dispatchBsearch", suffix, "(a,y,c,l,h){\
+-if(a.shape){\
+-if(typeof(c)==='function'){\
+-return Q(a,(l===undefined)?0:l|0,(h===undefined)?a.shape[0]-1:h|0,y,c)\
+-}else{\
+-return B(a,(c===undefined)?0:c|0,(l===undefined)?a.shape[0]-1:l|0,y)\
+-}}else{\
+-if(typeof(c)==='function'){\
+-return P(a,(l===undefined)?0:l|0,(h===undefined)?a.length-1:h|0,y,c)\
+-}else{\
+-return A(a,(c===undefined)?0:c|0,(l===undefined)?a.length-1:l|0,y)\
+-}}}\
+-return dispatchBsearch", suffix].join(""))
+-  return result()
+-}
++module.exports = createABigTriangle
+ 
+-module.exports = {
+-  ge: compileBoundsSearch(">=", false, "GE"),
+-  gt: compileBoundsSearch(">", false, "GT"),
+-  lt: compileBoundsSearch("<", true, "LT"),
+-  le: compileBoundsSearch("<=", true, "LE"),
+-  eq: compileBoundsSearch("-", true, "EQ", true)
++},{"gl-buffer":121,"gl-vao":206,"weak-map":465}],24:[function(require,module,exports){
++var padLeft = require('pad-left')
++
++module.exports = addLineNumbers
++function addLineNumbers (string, start, delim) {
++  start = typeof start === 'number' ? start : 1
++  delim = delim || ': '
++
++  var lines = string.split(/\r?\n/)
++  var totalDigits = String(lines.length + start - 1).length
++  return lines.map(function (line, i) {
++    var c = i + start
++    var digits = String(c).length
++    var prefix = padLeft(c, totalDigits - digits)
++    return prefix + delim + line
++  }).join('\n')
+ }
+ 
+-},{}],23:[function(require,module,exports){
+-"use strict"
++},{"pad-left":390}],25:[function(require,module,exports){
++'use strict'
+ 
+-function dcubicHermite(p0, v0, p1, v1, t, f) {
+-  var dh00 = 6*t*t-6*t,
+-      dh10 = 3*t*t-4*t + 1,
+-      dh01 = -6*t*t+6*t,
+-      dh11 = 3*t*t-2*t
+-  if(p0.length) {
+-    if(!f) {
+-      f = new Array(p0.length)
++module.exports = affineHull
++
++var orient = require('robust-orientation')
++
++function linearlyIndependent(points, d) {
++  var nhull = new Array(d+1)
++  for(var i=0; i<points.length; ++i) {
++    nhull[i] = points[i]
++  }
++  for(var i=0; i<=points.length; ++i) {
++    for(var j=points.length; j<=d; ++j) {
++      var x = new Array(d)
++      for(var k=0; k<d; ++k) {
++        x[k] = Math.pow(j+1-i, k)
++      }
++      nhull[j] = x
+     }
+-    for(var i=p0.length-1; i>=0; --i) {
+-      f[i] = dh00*p0[i] + dh10*v0[i] + dh01*p1[i] + dh11*v1[i]
++    var o = orient.apply(void 0, nhull)
++    if(o) {
++      return true
+     }
+-    return f
+   }
+-  return dh00*p0 + dh10*v0 + dh01*p1[i] + dh11*v1
++  return false
+ }
+ 
+-function cubicHermite(p0, v0, p1, v1, t, f) {
+-  var ti  = (t-1), t2 = t*t, ti2 = ti*ti,
+-      h00 = (1+2*t)*ti2,
+-      h10 = t*ti2,
+-      h01 = t2*(3-2*t),
+-      h11 = t2*ti
+-  if(p0.length) {
+-    if(!f) {
+-      f = new Array(p0.length)
++function affineHull(points) {
++  var n = points.length
++  if(n === 0) {
++    return []
++  }
++  if(n === 1) {
++    return [0]
++  }
++  var d = points[0].length
++  var frame = [ points[0] ]
++  var index = [ 0 ]
++  for(var i=1; i<n; ++i) {
++    frame.push(points[i])
++    if(!linearlyIndependent(frame, d)) {
++      frame.pop()
++      continue
+     }
+-    for(var i=p0.length-1; i>=0; --i) {
+-      f[i] = h00*p0[i] + h10*v0[i] + h01*p1[i] + h11*v1[i]
++    index.push(i)
++    if(index.length === d+1) {
++      return index
+     }
+-    return f
+   }
+-  return h00*p0 + h10*v0 + h01*p1 + h11*v1
++  return index
+ }
++},{"robust-orientation":418}],26:[function(require,module,exports){
++'use strict'
+ 
+-module.exports = cubicHermite
+-module.exports.derivative = dcubicHermite
+-},{}],24:[function(require,module,exports){
+-module.exports = cross;
+-
+-/**
+- * Computes the cross product of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-function cross(out, a, b) {
+-    var ax = a[0], ay = a[1], az = a[2],
+-        bx = b[0], by = b[1], bz = b[2]
++module.exports = alphaComplex
+ 
+-    out[0] = ay * bz - az * by
+-    out[1] = az * bx - ax * bz
+-    out[2] = ax * by - ay * bx
+-    return out
+-}
+-},{}],25:[function(require,module,exports){
+-module.exports = dot;
++var delaunay = require('delaunay-triangulate')
++var circumradius = require('circumradius')
+ 
+-/**
+- * Calculates the dot product of two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-function dot(a, b) {
+-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]
++function alphaComplex(alpha, points) {
++  return delaunay(points).filter(function(cell) {
++    var simplex = new Array(cell.length)
++    for(var i=0; i<cell.length; ++i) {
++      simplex[i] = points[cell[i]]
++    }
++    return circumradius(simplex) * alpha < 1
++  })
+ }
+-},{}],26:[function(require,module,exports){
+-module.exports = length;
++},{"circumradius":70,"delaunay-triangulate":91}],27:[function(require,module,exports){
++module.exports = alphaShape
+ 
+-/**
+- * Calculates the length of a vec3
+- *
+- * @param {vec3} a vector to calculate length of
+- * @returns {Number} length of a
+- */
+-function length(a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2]
+-    return Math.sqrt(x*x + y*y + z*z)
+-}
+-},{}],27:[function(require,module,exports){
+-module.exports = lerp;
++var ac = require('alpha-complex')
++var bnd = require('simplicial-complex-boundary')
+ 
+-/**
+- * Performs a linear interpolation between two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
+- */
+-function lerp(out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1],
+-        az = a[2]
+-    out[0] = ax + t * (b[0] - ax)
+-    out[1] = ay + t * (b[1] - ay)
+-    out[2] = az + t * (b[2] - az)
+-    return out
++function alphaShape(alpha, points) {
++  return bnd(ac(alpha, points))
+ }
+-},{}],28:[function(require,module,exports){
+-module.exports = normalize;
++},{"alpha-complex":26,"simplicial-complex-boundary":426}],28:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Normalize a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to normalize
+- * @returns {vec3} out
+- */
+-function normalize(out, a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2]
+-    var len = x*x + y*y + z*z
+-    if (len > 0) {
+-        //TODO: evaluate use of glm_invsqrt here?
+-        len = 1 / Math.sqrt(len)
+-        out[0] = a[0] * len
+-        out[1] = a[1] * len
+-        out[2] = a[2] * len
+-    }
+-    return out
+-}
+-},{}],29:[function(require,module,exports){
+-'use strict'
++var arraytools  = function () {
+ 
+-var bsearch   = require('binary-search-bounds')
+-var m4interp  = require('mat4-interpolate')
+-var invert44  = require('gl-mat4/invert')
+-var rotateX   = require('gl-mat4/rotateX')
+-var rotateY   = require('gl-mat4/rotateY')
+-var rotateZ   = require('gl-mat4/rotateZ')
+-var lookAt    = require('gl-mat4/lookAt')
+-var translate = require('gl-mat4/translate')
+-var scale     = require('gl-mat4/scale')
+-var normalize = require('gl-vec3/normalize')
++  var that = {};
+ 
+-var DEFAULT_CENTER = [0,0,0]
++  var RGB_REGEX =  /^rgba?\(\s*\d{1,3}\s*,\s*\d{1,3}\s*,\s*\d{1,3}\s*(,.*)?\)$/;
++  var RGB_GROUP_REGEX = /^rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,?\s*(.*)?\)$/;
+ 
+-module.exports = createMatrixCameraController
++  function isPlainObject (v) {
++    return !Array.isArray(v) && v !== null && typeof v === 'object';
++  }
+ 
+-function MatrixCameraController(initialMatrix) {
+-  this._components    = initialMatrix.slice()
+-  this._time          = [0]
+-  this.prevMatrix     = initialMatrix.slice()
+-  this.nextMatrix     = initialMatrix.slice()
+-  this.computedMatrix = initialMatrix.slice()
+-  this.computedInverse = initialMatrix.slice()
+-  this.computedEye    = [0,0,0]
+-  this.computedUp     = [0,0,0]
+-  this.computedCenter = [0,0,0]
+-  this.computedRadius = [0]
+-  this._limits        = [-Infinity, Infinity]
+-}
++  function linspace (start, end, num) {
++    var inc = (end - start) / Math.max(num - 1, 1);
++    var a = [];
++    for( var ii = 0; ii < num; ii++)
++      a.push(start + ii*inc);
++    return a;
++  }
+ 
+-var proto = MatrixCameraController.prototype
++  function zip () {
++      var arrays = [].slice.call(arguments);
++      var lengths = arrays.map(function (a) {return a.length;});
++      var len = Math.min.apply(null, lengths);
++      var zipped = [];
++      for (var i = 0; i < len; i++) {
++          zipped[i] = [];
++          for (var j = 0; j < arrays.length; ++j) {
++              zipped[i][j] = arrays[j][i];
++          }
++      }
++      return zipped;
++  }
+ 
+-proto.recalcMatrix = function(t) {
+-  var time = this._time
+-  var tidx = bsearch.le(time, t)
+-  var mat = this.computedMatrix
+-  if(tidx < 0) {
+-    return
++  function zip3 (a, b, c) {
++      var len = Math.min.apply(null, [a.length, b.length, c.length]);
++      var result = [];
++      for (var n = 0; n < len; n++) {
++          result.push([a[n], b[n], c[n]]);
++      }
++      return result;
+   }
+-  var comps = this._components
+-  if(tidx === time.length-1) {
+-    var ptr = 16*tidx
+-    for(var i=0; i<16; ++i) {
+-      mat[i] = comps[ptr++]
+-    }
+-  } else {
+-    var dt = (time[tidx+1] - time[tidx])
+-    var ptr = 16*tidx
+-    var prev = this.prevMatrix
+-    var allEqual = true
+-    for(var i=0; i<16; ++i) {
+-      prev[i] = comps[ptr++]
+-    }
+-    var next = this.nextMatrix
+-    for(var i=0; i<16; ++i) {
+-      next[i] = comps[ptr++]
+-      allEqual = allEqual && (prev[i] === next[i])
+-    }
+-    if(dt < 1e-6 || allEqual) {
+-      for(var i=0; i<16; ++i) {
+-        mat[i] = prev[i]
++
++  function sum (A) {
++    var acc = 0;
++    accumulate(A, acc);
++    function accumulate(x) {
++      for (var i = 0; i < x.length; i++) {
++        if (Array.isArray(x[i]))
++          accumulate(x[i], acc);
++        else
++          acc += x[i];
+       }
+-    } else {
+-      m4interp(mat, prev, next, (t - time[tidx])/dt)
+     }
++    return acc;
+   }
+ 
+-  var up = this.computedUp
+-  up[0] = mat[1]
+-  up[1] = mat[5]
+-  up[2] = mat[6]
+-  normalize(up, up)
+-
+-  var imat = this.computedInverse
+-  invert44(imat, mat)
+-  var eye = this.computedEye
+-  var w = imat[15]
+-  eye[0] = imat[12]/w
+-  eye[1] = imat[13]/w
+-  eye[2] = imat[14]/w
++  function copy2D (arr) {
++    var carr = [];
++    for (var i = 0; i < arr.length; ++i) {
++      carr[i] = [];
++      for (var j = 0; j < arr[i].length; ++j) {
++        carr[i][j] = arr[i][j];
++      }
++    }
+ 
+-  var center = this.computedCenter
+-  var radius = Math.exp(this.computedRadius[0])
+-  for(var i=0; i<3; ++i) {
+-    center[i] = eye[i] - mat[2+4*i] * radius
++    return carr;
+   }
+-}
+ 
+-proto.idle = function(t) {
+-  if(t < this.lastT()) {
+-    return
+-  }
+-  var mc = this._components
+-  var ptr = mc.length-16
+-  for(var i=0; i<16; ++i) {
+-    mc.push(mc[ptr++])
+-  }
+-  this._time.push(t)
+-}
+ 
+-proto.flush = function(t) {
+-  var idx = bsearch.gt(this._time, t) - 2
+-  if(idx < 0) {
+-    return
++  function copy1D (arr) {
++    var carr = [];
++    for (var i = 0; i < arr.length; ++i) {
++      carr[i] = arr[i];
++    }
++
++    return carr;
+   }
+-  this._time.slice(0, idx)
+-  this._components.slice(0, 16*idx)
+-}
+ 
+-proto.lastT = function() {
+-  return this._time[this._time.length-1]
+-}
+ 
+-proto.lookAt = function(t, eye, center, up) {
+-  this.recalcMatrix(t)
+-  eye    = eye || this.computedEye
+-  center = center || DEFAULT_CENTER
+-  up     = up || this.computedUp
+-  this.setMatrix(t, lookAt(this.computedMatrix, eye, center, up))
+-  var d2 = 0.0
+-  for(var i=0; i<3; ++i) {
+-    d2 += Math.pow(center[i] - eye[i], 2)
++  function isEqual(arr1, arr2) {
++    if(arr1.length !== arr2.length)
++      return false;
++    for(var i = arr1.length; i--;) {
++      if(arr1[i] !== arr2[i])
++        return false;
++    }
++
++    return true;
+   }
+-  d2 = Math.log(Math.sqrt(d2))
+-  this.computedRadius[0] = d2
+-}
+ 
+-proto.rotate = function(t, yaw, pitch, roll) {
+-  this.recalcMatrix(t)
+-  var mat = this.computedInverse
+-  if(yaw)   rotateY(mat, mat, yaw)
+-  if(pitch) rotateX(mat, mat, pitch)
+-  if(roll)  rotateZ(mat, mat, roll)
+-  this.setMatrix(t, invert44(this.computedMatrix, mat))
+-}
+ 
+-var tvec = [0,0,0]
++  function str2RgbArray(str, twoFiftySix) {
++    // convert hex or rbg strings to 0->1 or 0->255 rgb array
++    var rgb,
++        match;
+ 
+-proto.pan = function(t, dx, dy, dz) {
+-  tvec[0] = -(dx || 0.0)
+-  tvec[1] = -(dy || 0.0)
+-  tvec[2] = -(dz || 0.0)
+-  this.recalcMatrix(t)
+-  var mat = this.computedInverse
+-  translate(mat, mat, tvec)
+-  this.setMatrix(t, invert44(mat, mat))
+-}
++    if (typeof str !== 'string') return str;
+ 
+-proto.translate = function(t, dx, dy, dz) {
+-  tvec[0] = dx || 0.0
+-  tvec[1] = dy || 0.0
+-  tvec[2] = dz || 0.0
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
+-  translate(mat, mat, tvec)
+-  this.setMatrix(t, mat)
+-}
++    rgb = [];
++    // hex notation
++    if (str[0] === '#') {
++      str = str.substr(1) // remove hash
++      if (str.length === 3) str += str // fff -> ffffff
++      match = parseInt(str, 16);
++      rgb[0] = ((match >> 16) & 255);
++      rgb[1] = ((match >> 8) & 255);
++      rgb[2] = (match & 255);
++    }
+ 
+-proto.setMatrix = function(t, mat) {
+-  if(t < this.lastT()) {
+-    return
+-  }
+-  this._time.push(t)
+-  for(var i=0; i<16; ++i) {
+-    this._components.push(mat[i])
+-  }
+-}
++    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
++    else if (RGB_REGEX.test(str)) {
++      match = str.match(RGB_GROUP_REGEX);
++      rgb[0] = parseInt(match[1]);
++      rgb[1] = parseInt(match[2]);
++      rgb[2] = parseInt(match[3]);
++    }
+ 
+-proto.setDistance = function(t, d) {
+-  this.computedRadius[0] = d
+-}
++    if (!twoFiftySix) {
++      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
++    }
+ 
+-proto.setDistanceLimits = function(a,b) {
+-  var lim = this._limits
+-  lim[0] = a
+-  lim[1] = b
+-}
+ 
+-proto.getDistanceLimits = function(out) {
+-  var lim = this._limits
+-  if(out) {
+-    out[0] = lim[0]
+-    out[1] = lim[1]
+-    return out
++    return rgb;
+   }
+-  return lim
+-}
+-
+-function createMatrixCameraController(options) {
+-  options = options || {}
+-  var matrix = options.matrix || 
+-              [1,0,0,0,
+-               0,1,0,0,
+-               0,0,1,0,
+-               0,0,0,1]
+-  return new MatrixCameraController(matrix)
+-}
+-},{"binary-search-bounds":30,"gl-mat4/invert":143,"gl-mat4/lookAt":144,"gl-mat4/rotateX":148,"gl-mat4/rotateY":149,"gl-mat4/rotateZ":150,"gl-mat4/scale":151,"gl-mat4/translate":152,"gl-vec3/normalize":28,"mat4-interpolate":31}],30:[function(require,module,exports){
+-arguments[4][22][0].apply(exports,arguments)
+-},{"dup":22}],31:[function(require,module,exports){
+-var lerp = require('gl-vec3/lerp')
+ 
+-var recompose = require('mat4-recompose')
+-var decompose = require('mat4-decompose')
+-var determinant = require('gl-mat4/determinant')
+-var slerp = require('quat-slerp')
+ 
+-var state0 = state()
+-var state1 = state()
+-var tmp = state()
++  function str2RgbaArray(str, twoFiftySix) {
++    // convert hex or rbg strings to 0->1 or 0->255 rgb array
++    var rgb,
++        match;
+ 
+-module.exports = interpolate
+-function interpolate(out, start, end, alpha) {
+-    if (determinant(start) === 0 || determinant(end) === 0)
+-        return false
++    if (typeof str !== 'string') return str;
+ 
+-    //decompose the start and end matrices into individual components
+-    var r0 = decompose(start, state0.translate, state0.scale, state0.skew, state0.perspective, state0.quaternion)
+-    var r1 = decompose(end, state1.translate, state1.scale, state1.skew, state1.perspective, state1.quaternion)
+-    if (!r0 || !r1)
+-        return false    
++    rgb = [];
++    // hex notation
++    if (str[0] === '#') {
++      str = str.substr(1) // remove hash
++      if (str.length === 3) str += str // fff -> ffffff
++      match = parseInt(str, 16);
++      rgb[0] = ((match >> 16) & 255);
++      rgb[1] = ((match >> 8) & 255);
++      rgb[2] = (match & 255);
++    }
+ 
++    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
++    else if (RGB_REGEX.test(str)) {
++      match = str.match(RGB_GROUP_REGEX);
++      rgb[0] = parseInt(match[1]);
++      rgb[1] = parseInt(match[2]);
++      rgb[2] = parseInt(match[3]);
++      if (match[4]) rgb[3] = parseFloat(match[4]);
++      else rgb[3] = 1.0;
++    }
+ 
+-    //now lerp/slerp the start and end components into a temporary     lerp(tmptranslate, state0.translate, state1.translate, alpha)
+-    lerp(tmp.translate, state0.translate, state1.translate, alpha)
+-    lerp(tmp.skew, state0.skew, state1.skew, alpha)
+-    lerp(tmp.scale, state0.scale, state1.scale, alpha)
+-    lerp(tmp.perspective, state0.perspective, state1.perspective, alpha)
+-    slerp(tmp.quaternion, state0.quaternion, state1.quaternion, alpha)
+ 
+-    //and recompose into our 'out' matrix
+-    recompose(out, tmp.translate, tmp.scale, tmp.skew, tmp.perspective, tmp.quaternion)
+-    return true
+-}
+ 
+-function state() {
+-    return {
+-        translate: vec3(),
+-        scale: vec3(1),
+-        skew: vec3(),
+-        perspective: vec4(),
+-        quaternion: vec4()
++    if (!twoFiftySix) {
++      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
+     }
+-}
+ 
+-function vec3(n) {
+-    return [n||0,n||0,n||0]
+-}
+ 
+-function vec4() {
+-    return [0,0,0,1]
+-}
+-},{"gl-mat4/determinant":139,"gl-vec3/lerp":27,"mat4-decompose":32,"mat4-recompose":34,"quat-slerp":35}],32:[function(require,module,exports){
+-/*jshint unused:true*/
+-/*
+-Input:  matrix      ; a 4x4 matrix
+-Output: translation ; a 3 component vector
+-        scale       ; a 3 component vector
+-        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
+-        perspective ; a 4 component vector
+-        quaternion  ; a 4 component vector
+-Returns false if the matrix cannot be decomposed, true if it can
++    return rgb;
++  }
+ 
+ 
+-References:
+-https://github.com/kamicane/matrix3d/blob/master/lib/Matrix3d.js
+-https://github.com/ChromiumWebApps/chromium/blob/master/ui/gfx/transform_util.cc
+-http://www.w3.org/TR/css3-transforms/#decomposing-a-3d-matrix
+-*/
+ 
+-var normalize = require('./normalize')
+ 
+-var create = require('gl-mat4/create')
+-var clone = require('gl-mat4/clone')
+-var determinant = require('gl-mat4/determinant')
+-var invert = require('gl-mat4/invert')
+-var transpose = require('gl-mat4/transpose')
+-var vec3 = {
+-    length: require('gl-vec3/length'),
+-    normalize: require('gl-vec3/normalize'),
+-    dot: require('gl-vec3/dot'),
+-    cross: require('gl-vec3/cross')
+-}
+ 
+-var tmp = create()
+-var perspectiveMatrix = create()
+-var tmpVec4 = [0, 0, 0, 0]
+-var row = [ [0,0,0], [0,0,0], [0,0,0] ]
+-var pdum3 = [0,0,0]
++  that.isPlainObject = isPlainObject;
++  that.linspace = linspace;
++  that.zip3 = zip3;
++  that.sum = sum;
++  that.zip = zip;
++  that.isEqual = isEqual;
++  that.copy2D = copy2D;
++  that.copy1D = copy1D;
++  that.str2RgbArray = str2RgbArray;
++  that.str2RgbaArray = str2RgbaArray;
+ 
+-module.exports = function decomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
+-    if (!translation) translation = [0,0,0]
+-    if (!scale) scale = [0,0,0]
+-    if (!skew) skew = [0,0,0]
+-    if (!perspective) perspective = [0,0,0,1]
+-    if (!quaternion) quaternion = [0,0,0,1]
++  return that
+ 
+-    //normalize, if not possible then bail out early
+-    if (!normalize(tmp, matrix))
+-        return false
++}
+ 
+-    // perspectiveMatrix is used to solve for perspective, but it also provides
+-    // an easy way to test for singularity of the upper 3x3 component.
+-    clone(perspectiveMatrix, tmp)
+ 
+-    perspectiveMatrix[3] = 0
+-    perspectiveMatrix[7] = 0
+-    perspectiveMatrix[11] = 0
+-    perspectiveMatrix[15] = 1
++module.exports = arraytools();
+ 
+-    // If the perspectiveMatrix is not invertible, we are also unable to
+-    // decompose, so we'll bail early. Constant taken from SkMatrix44::invert.
+-    if (Math.abs(determinant(perspectiveMatrix) < 1e-8))
+-        return false
++},{}],29:[function(require,module,exports){
++// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
++//
++// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
++//
++// Originally from narwhal.js (http://narwhaljs.org)
++// Copyright (c) 2009 Thomas Robinson <280north.com>
++//
++// Permission is hereby granted, free of charge, to any person obtaining a copy
++// of this software and associated documentation files (the 'Software'), to
++// deal in the Software without restriction, including without limitation the
++// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
++// sell copies of the Software, and to permit persons to whom the Software is
++// furnished to do so, subject to the following conditions:
++//
++// The above copyright notice and this permission notice shall be included in
++// all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
++// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
++// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-    var a03 = tmp[3], a13 = tmp[7], a23 = tmp[11],
+-            a30 = tmp[12], a31 = tmp[13], a32 = tmp[14], a33 = tmp[15]
++// when used in node, this will actually load the util module we depend on
++// versus loading the builtin util module as happens otherwise
++// this is a bug in node module loading as far as I am concerned
++var util = require('util/');
+ 
+-    // First, isolate perspective.
+-    if (a03 !== 0 || a13 !== 0 || a23 !== 0) {
+-        tmpVec4[0] = a03
+-        tmpVec4[1] = a13
+-        tmpVec4[2] = a23
+-        tmpVec4[3] = a33
++var pSlice = Array.prototype.slice;
++var hasOwn = Object.prototype.hasOwnProperty;
+ 
+-        // Solve the equation by inverting perspectiveMatrix and multiplying
+-        // rightHandSide by the inverse.
+-        // resuing the perspectiveMatrix here since it's no longer needed
+-        var ret = invert(perspectiveMatrix, perspectiveMatrix)
+-        if (!ret) return false
+-        transpose(perspectiveMatrix, perspectiveMatrix)
++// 1. The assert module provides functions that throw
++// AssertionError's when particular conditions are not met. The
++// assert module must conform to the following interface.
+ 
+-        //multiply by transposed inverse perspective matrix, into perspective vec4
+-        vec4multMat4(perspective, tmpVec4, perspectiveMatrix)
+-    } else { 
+-        //no perspective
+-        perspective[0] = perspective[1] = perspective[2] = 0
+-        perspective[3] = 1
+-    }
++var assert = module.exports = ok;
+ 
+-    // Next take care of translation
+-    translation[0] = a30
+-    translation[1] = a31
+-    translation[2] = a32
++// 2. The AssertionError is defined in assert.
++// new assert.AssertionError({ message: message,
++//                             actual: actual,
++//                             expected: expected })
+ 
+-    // Now get scale and shear. 'row' is a 3 element array of 3 component vectors
+-    mat3from4(row, tmp)
++assert.AssertionError = function AssertionError(options) {
++  this.name = 'AssertionError';
++  this.actual = options.actual;
++  this.expected = options.expected;
++  this.operator = options.operator;
++  if (options.message) {
++    this.message = options.message;
++    this.generatedMessage = false;
++  } else {
++    this.message = getMessage(this);
++    this.generatedMessage = true;
++  }
++  var stackStartFunction = options.stackStartFunction || fail;
+ 
+-    // Compute X scale factor and normalize first row.
+-    scale[0] = vec3.length(row[0])
+-    vec3.normalize(row[0], row[0])
++  if (Error.captureStackTrace) {
++    Error.captureStackTrace(this, stackStartFunction);
++  }
++  else {
++    // non v8 browsers so we can have a stacktrace
++    var err = new Error();
++    if (err.stack) {
++      var out = err.stack;
+ 
+-    // Compute XY shear factor and make 2nd row orthogonal to 1st.
+-    skew[0] = vec3.dot(row[0], row[1])
+-    combine(row[1], row[1], row[0], 1.0, -skew[0])
++      // try to strip useless frames
++      var fn_name = stackStartFunction.name;
++      var idx = out.indexOf('\n' + fn_name);
++      if (idx >= 0) {
++        // once we have located the function frame
++        // we need to strip out everything before it (and its line)
++        var next_line = out.indexOf('\n', idx + 1);
++        out = out.substring(next_line + 1);
++      }
+ 
+-    // Now, compute Y scale and normalize 2nd row.
+-    scale[1] = vec3.length(row[1])
+-    vec3.normalize(row[1], row[1])
+-    skew[0] /= scale[1]
++      this.stack = out;
++    }
++  }
++};
+ 
+-    // Compute XZ and YZ shears, orthogonalize 3rd row
+-    skew[1] = vec3.dot(row[0], row[2])
+-    combine(row[2], row[2], row[0], 1.0, -skew[1])
+-    skew[2] = vec3.dot(row[1], row[2])
+-    combine(row[2], row[2], row[1], 1.0, -skew[2])
++// assert.AssertionError instanceof Error
++util.inherits(assert.AssertionError, Error);
+ 
+-    // Next, get Z scale and normalize 3rd row.
+-    scale[2] = vec3.length(row[2])
+-    vec3.normalize(row[2], row[2])
+-    skew[1] /= scale[2]
+-    skew[2] /= scale[2]
++function replacer(key, value) {
++  if (util.isUndefined(value)) {
++    return '' + value;
++  }
++  if (util.isNumber(value) && !isFinite(value)) {
++    return value.toString();
++  }
++  if (util.isFunction(value) || util.isRegExp(value)) {
++    return value.toString();
++  }
++  return value;
++}
+ 
++function truncate(s, n) {
++  if (util.isString(s)) {
++    return s.length < n ? s : s.slice(0, n);
++  } else {
++    return s;
++  }
++}
+ 
+-    // At this point, the matrix (in rows) is orthonormal.
+-    // Check for a coordinate system flip.  If the determinant
+-    // is -1, then negate the matrix and the scaling factors.
+-    vec3.cross(pdum3, row[1], row[2])
+-    if (vec3.dot(row[0], pdum3) < 0) {
+-        for (var i = 0; i < 3; i++) {
+-            scale[i] *= -1;
+-            row[i][0] *= -1
+-            row[i][1] *= -1
+-            row[i][2] *= -1
+-        }
+-    }
++function getMessage(self) {
++  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
++         self.operator + ' ' +
++         truncate(JSON.stringify(self.expected, replacer), 128);
++}
+ 
+-    // Now, get the rotations out
+-    quaternion[0] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] - row[1][1] - row[2][2], 0))
+-    quaternion[1] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] + row[1][1] - row[2][2], 0))
+-    quaternion[2] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] - row[1][1] + row[2][2], 0))
+-    quaternion[3] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] + row[1][1] + row[2][2], 0))
++// At present only the three keys mentioned above are used and
++// understood by the spec. Implementations or sub modules can pass
++// other keys to the AssertionError's constructor - they will be
++// ignored.
+ 
+-    if (row[2][1] > row[1][2])
+-        quaternion[0] = -quaternion[0]
+-    if (row[0][2] > row[2][0])
+-        quaternion[1] = -quaternion[1]
+-    if (row[1][0] > row[0][1])
+-        quaternion[2] = -quaternion[2]
+-    return true
+-}
++// 3. All of the following functions must throw an AssertionError
++// when a corresponding condition is not met, with a message that
++// may be undefined if not provided.  All assertion methods provide
++// both the actual and expected values to the assertion error for
++// display purposes.
+ 
+-//will be replaced by gl-vec4 eventually
+-function vec4multMat4(out, a, m) {
+-    var x = a[0], y = a[1], z = a[2], w = a[3];
+-    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
+-    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
+-    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
+-    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
+-    return out;
++function fail(actual, expected, message, operator, stackStartFunction) {
++  throw new assert.AssertionError({
++    message: message,
++    actual: actual,
++    expected: expected,
++    operator: operator,
++    stackStartFunction: stackStartFunction
++  });
+ }
+ 
+-//gets upper-left of a 4x4 matrix into a 3x3 of vectors
+-function mat3from4(out, mat4x4) {
+-    out[0][0] = mat4x4[0]
+-    out[0][1] = mat4x4[1]
+-    out[0][2] = mat4x4[2]
+-    
+-    out[1][0] = mat4x4[4]
+-    out[1][1] = mat4x4[5]
+-    out[1][2] = mat4x4[6]
++// EXTENSION! allows for well behaved errors defined elsewhere.
++assert.fail = fail;
+ 
+-    out[2][0] = mat4x4[8]
+-    out[2][1] = mat4x4[9]
+-    out[2][2] = mat4x4[10]
+-}
++// 4. Pure assertion tests whether a value is truthy, as determined
++// by !!guard.
++// assert.ok(guard, message_opt);
++// This statement is equivalent to assert.equal(true, !!guard,
++// message_opt);. To test strictly for the value true, use
++// assert.strictEqual(true, guard, message_opt);.
+ 
+-function combine(out, a, b, scale1, scale2) {
+-    out[0] = a[0] * scale1 + b[0] * scale2
+-    out[1] = a[1] * scale1 + b[1] * scale2
+-    out[2] = a[2] * scale1 + b[2] * scale2
+-}
+-},{"./normalize":33,"gl-mat4/clone":137,"gl-mat4/create":138,"gl-mat4/determinant":139,"gl-mat4/invert":143,"gl-mat4/transpose":153,"gl-vec3/cross":24,"gl-vec3/dot":25,"gl-vec3/length":26,"gl-vec3/normalize":28}],33:[function(require,module,exports){
+-module.exports = function normalize(out, mat) {
+-    var m44 = mat[15]
+-    // Cannot normalize.
+-    if (m44 === 0) 
+-        return false
+-    var scale = 1 / m44
+-    for (var i=0; i<16; i++)
+-        out[i] = mat[i] * scale
+-    return true
++function ok(value, message) {
++  if (!value) fail(value, true, message, '==', assert.ok);
+ }
+-},{}],34:[function(require,module,exports){
+-/*
+-Input:  translation ; a 3 component vector
+-        scale       ; a 3 component vector
+-        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
+-        perspective ; a 4 component vector
+-        quaternion  ; a 4 component vector
+-Output: matrix      ; a 4x4 matrix
++assert.ok = ok;
+ 
+-From: http://www.w3.org/TR/css3-transforms/#recomposing-to-a-3d-matrix
+-*/
++// 5. The equality assertion tests shallow, coercive equality with
++// ==.
++// assert.equal(actual, expected, message_opt);
+ 
+-var mat4 = {
+-    identity: require('gl-mat4/identity'),
+-    translate: require('gl-mat4/translate'),
+-    multiply: require('gl-mat4/multiply'),
+-    create: require('gl-mat4/create'),
+-    scale: require('gl-mat4/scale'),
+-    fromRotationTranslation: require('gl-mat4/fromRotationTranslation')
+-}
++assert.equal = function equal(actual, expected, message) {
++  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
++};
+ 
+-var rotationMatrix = mat4.create()
+-var temp = mat4.create()
++// 6. The non-equality assertion tests for whether two objects are not equal
++// with != assert.notEqual(actual, expected, message_opt);
+ 
+-module.exports = function recomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
+-    mat4.identity(matrix)
++assert.notEqual = function notEqual(actual, expected, message) {
++  if (actual == expected) {
++    fail(actual, expected, message, '!=', assert.notEqual);
++  }
++};
+ 
+-    //apply translation & rotation
+-    mat4.fromRotationTranslation(matrix, quaternion, translation)
++// 7. The equivalence assertion tests a deep equality relation.
++// assert.deepEqual(actual, expected, message_opt);
+ 
+-    //apply perspective
+-    matrix[3] = perspective[0]
+-    matrix[7] = perspective[1]
+-    matrix[11] = perspective[2]
+-    matrix[15] = perspective[3]
+-        
+-    // apply skew
+-    // temp is a identity 4x4 matrix initially
+-    mat4.identity(temp)
++assert.deepEqual = function deepEqual(actual, expected, message) {
++  if (!_deepEqual(actual, expected)) {
++    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
++  }
++};
+ 
+-    if (skew[2] !== 0) {
+-        temp[9] = skew[2]
+-        mat4.multiply(matrix, matrix, temp)
+-    }
++function _deepEqual(actual, expected) {
++  // 7.1. All identical values are equivalent, as determined by ===.
++  if (actual === expected) {
++    return true;
+ 
+-    if (skew[1] !== 0) {
+-        temp[9] = 0
+-        temp[8] = skew[1]
+-        mat4.multiply(matrix, matrix, temp)
+-    }
++  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
++    if (actual.length != expected.length) return false;
+ 
+-    if (skew[0] !== 0) {
+-        temp[8] = 0
+-        temp[4] = skew[0]
+-        mat4.multiply(matrix, matrix, temp)
++    for (var i = 0; i < actual.length; i++) {
++      if (actual[i] !== expected[i]) return false;
+     }
+ 
+-    //apply scale
+-    mat4.scale(matrix, matrix, scale)
+-    return matrix
+-}
+-},{"gl-mat4/create":138,"gl-mat4/fromRotationTranslation":141,"gl-mat4/identity":142,"gl-mat4/multiply":145,"gl-mat4/scale":151,"gl-mat4/translate":152}],35:[function(require,module,exports){
+-module.exports = require('gl-quat/slerp')
+-},{"gl-quat/slerp":36}],36:[function(require,module,exports){
+-module.exports = slerp
+-
+-/**
+- * Performs a spherical linear interpolation between two quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {quat} out
+- */
+-function slerp (out, a, b, t) {
+-  // benchmarks:
+-  //    http://jsperf.com/quaternion-slerp-implementations
++    return true;
+ 
+-  var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-    bx = b[0], by = b[1], bz = b[2], bw = b[3]
++  // 7.2. If the expected value is a Date object, the actual value is
++  // equivalent if it is also a Date object that refers to the same time.
++  } else if (util.isDate(actual) && util.isDate(expected)) {
++    return actual.getTime() === expected.getTime();
+ 
+-  var omega, cosom, sinom, scale0, scale1
++  // 7.3 If the expected value is a RegExp object, the actual value is
++  // equivalent if it is also a RegExp object with the same source and
++  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
++  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
++    return actual.source === expected.source &&
++           actual.global === expected.global &&
++           actual.multiline === expected.multiline &&
++           actual.lastIndex === expected.lastIndex &&
++           actual.ignoreCase === expected.ignoreCase;
+ 
+-  // calc cosine
+-  cosom = ax * bx + ay * by + az * bz + aw * bw
+-  // adjust signs (if necessary)
+-  if (cosom < 0.0) {
+-    cosom = -cosom
+-    bx = -bx
+-    by = -by
+-    bz = -bz
+-    bw = -bw
+-  }
+-  // calculate coefficients
+-  if ((1.0 - cosom) > 0.000001) {
+-    // standard case (slerp)
+-    omega = Math.acos(cosom)
+-    sinom = Math.sin(omega)
+-    scale0 = Math.sin((1.0 - t) * omega) / sinom
+-    scale1 = Math.sin(t * omega) / sinom
++  // 7.4. Other pairs that do not both pass typeof value == 'object',
++  // equivalence is determined by ==.
++  } else if (!util.isObject(actual) && !util.isObject(expected)) {
++    return actual == expected;
++
++  // 7.5 For all other Object pairs, including Array objects, equivalence is
++  // determined by having the same number of owned properties (as verified
++  // with Object.prototype.hasOwnProperty.call), the same set of keys
++  // (although not necessarily the same order), equivalent values for every
++  // corresponding key, and an identical 'prototype' property. Note: this
++  // accounts for both named and indexed properties on Arrays.
+   } else {
+-    // "from" and "to" quaternions are very close
+-    //  ... so we can do a linear interpolation
+-    scale0 = 1.0 - t
+-    scale1 = t
++    return objEquiv(actual, expected);
+   }
+-  // calculate final values
+-  out[0] = scale0 * ax + scale1 * bx
+-  out[1] = scale0 * ay + scale1 * by
+-  out[2] = scale0 * az + scale1 * bz
+-  out[3] = scale0 * aw + scale1 * bw
+-
+-  return out
+ }
+ 
+-},{}],37:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = quatFromFrame
++function isArguments(object) {
++  return Object.prototype.toString.call(object) == '[object Arguments]';
++}
+ 
+-function quatFromFrame(
+-  out,
+-  rx, ry, rz,
+-  ux, uy, uz,
+-  fx, fy, fz) {
+-  var tr = rx + uy + fz
+-  if(l > 0) {
+-    var l = Math.sqrt(tr + 1.0)
+-    out[0] = 0.5 * (uz - fy) / l
+-    out[1] = 0.5 * (fx - rz) / l
+-    out[2] = 0.5 * (ry - uy) / l
+-    out[3] = 0.5 * l
+-  } else {
+-    var tf = Math.max(rx, uy, fz)
+-    var l = Math.sqrt(2 * tf - tr + 1.0)
+-    if(rx >= tf) {
+-      //x y z  order
+-      out[0] = 0.5 * l
+-      out[1] = 0.5 * (ux + ry) / l
+-      out[2] = 0.5 * (fx + rz) / l
+-      out[3] = 0.5 * (uz - fy) / l
+-    } else if(uy >= tf) {
+-      //y z x  order
+-      out[0] = 0.5 * (ry + ux) / l
+-      out[1] = 0.5 * l
+-      out[2] = 0.5 * (fy + uz) / l
+-      out[3] = 0.5 * (fx - rz) / l
+-    } else {
+-      //z x y  order
+-      out[0] = 0.5 * (rz + fx) / l
+-      out[1] = 0.5 * (uz + fy) / l
+-      out[2] = 0.5 * l
+-      out[3] = 0.5 * (ry - ux) / l
+-    }
++function objEquiv(a, b) {
++  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
++    return false;
++  // an identical 'prototype' property.
++  if (a.prototype !== b.prototype) return false;
++  // if one is a primitive, the other must be same
++  if (util.isPrimitive(a) || util.isPrimitive(b)) {
++    return a === b;
+   }
+-  return out
++  var aIsArgs = isArguments(a),
++      bIsArgs = isArguments(b);
++  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
++    return false;
++  if (aIsArgs) {
++    a = pSlice.call(a);
++    b = pSlice.call(b);
++    return _deepEqual(a, b);
++  }
++  var ka = objectKeys(a),
++      kb = objectKeys(b),
++      key, i;
++  // having the same number of owned properties (keys incorporates
++  // hasOwnProperty)
++  if (ka.length != kb.length)
++    return false;
++  //the same set of keys (although not necessarily the same order),
++  ka.sort();
++  kb.sort();
++  //~~~cheap key test
++  for (i = ka.length - 1; i >= 0; i--) {
++    if (ka[i] != kb[i])
++      return false;
++  }
++  //equivalent values for every corresponding key, and
++  //~~~possibly expensive deep test
++  for (i = ka.length - 1; i >= 0; i--) {
++    key = ka[i];
++    if (!_deepEqual(a[key], b[key])) return false;
++  }
++  return true;
+ }
+-},{}],38:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = createOrbitController
+ 
+-var filterVector  = require('filtered-vector')
+-var lookAt        = require('gl-mat4/lookAt')
+-var mat4FromQuat  = require('gl-mat4/fromQuat')
+-var invert44      = require('gl-mat4/invert')
+-var quatFromFrame = require('./lib/quatFromFrame')
++// 8. The non-equivalence assertion tests for any deep inequality.
++// assert.notDeepEqual(actual, expected, message_opt);
+ 
+-function len3(x,y,z) {
+-  return Math.sqrt(Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
+-}
++assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
++  if (_deepEqual(actual, expected)) {
++    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
++  }
++};
+ 
+-function len4(w,x,y,z) {
+-  return Math.sqrt(Math.pow(w,2) + Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
+-}
++// 9. The strict equality assertion tests strict equality, as determined by ===.
++// assert.strictEqual(actual, expected, message_opt);
+ 
+-function normalize4(out, a) {
+-  var ax = a[0]
+-  var ay = a[1]
+-  var az = a[2]
+-  var aw = a[3]
+-  var al = len4(ax, ay, az, aw)
+-  if(al > 1e-6) {
+-    out[0] = ax/al
+-    out[1] = ay/al
+-    out[2] = az/al
+-    out[3] = aw/al
+-  } else {
+-    out[0] = out[1] = out[2] = 0.0
+-    out[3] = 1.0
++assert.strictEqual = function strictEqual(actual, expected, message) {
++  if (actual !== expected) {
++    fail(actual, expected, message, '===', assert.strictEqual);
+   }
+-}
++};
+ 
+-function OrbitCameraController(initQuat, initCenter, initRadius) {
+-  this.radius    = filterVector([initRadius])
+-  this.center    = filterVector(initCenter)
+-  this.rotation  = filterVector(initQuat)
++// 10. The strict non-equality assertion tests for strict inequality, as
++// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);
+ 
+-  this.computedRadius   = this.radius.curve(0)
+-  this.computedCenter   = this.center.curve(0)
+-  this.computedRotation = this.rotation.curve(0)
+-  this.computedUp       = [0.1,0,0]
+-  this.computedEye      = [0.1,0,0]
+-  this.computedMatrix   = [0.1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
++assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
++  if (actual === expected) {
++    fail(actual, expected, message, '!==', assert.notStrictEqual);
++  }
++};
+ 
+-  this.recalcMatrix(0)
+-}
++function expectedException(actual, expected) {
++  if (!actual || !expected) {
++    return false;
++  }
+ 
+-var proto = OrbitCameraController.prototype
++  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
++    return expected.test(actual);
++  } else if (actual instanceof expected) {
++    return true;
++  } else if (expected.call({}, actual) === true) {
++    return true;
++  }
+ 
+-proto.lastT = function() {
+-  return Math.max(
+-    this.radius.lastT(),
+-    this.center.lastT(),
+-    this.rotation.lastT())
++  return false;
+ }
+ 
+-proto.recalcMatrix = function(t) {
+-  this.radius.curve(t)
+-  this.center.curve(t)
+-  this.rotation.curve(t)
+-
+-  var quat = this.computedRotation
+-  normalize4(quat, quat)
++function _throws(shouldThrow, block, expected, message) {
++  var actual;
+ 
+-  var mat = this.computedMatrix
+-  mat4FromQuat(mat, quat)
++  if (util.isString(expected)) {
++    message = expected;
++    expected = null;
++  }
+ 
+-  var center = this.computedCenter
+-  var eye    = this.computedEye
+-  var up     = this.computedUp
+-  var radius = Math.exp(this.computedRadius[0])
++  try {
++    block();
++  } catch (e) {
++    actual = e;
++  }
+ 
+-  eye[0] = center[0] + radius * mat[2]
+-  eye[1] = center[1] + radius * mat[6]
+-  eye[2] = center[2] + radius * mat[10]
+-  up[0] = mat[1]
+-  up[1] = mat[5]
+-  up[2] = mat[9]
++  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
++            (message ? ' ' + message : '.');
+ 
+-  for(var i=0; i<3; ++i) {
+-    var rr = 0.0
+-    for(var j=0; j<3; ++j) {
+-      rr += mat[i+4*j] * eye[j]
+-    }
+-    mat[12+i] = -rr
++  if (shouldThrow && !actual) {
++    fail(actual, expected, 'Missing expected exception' + message);
+   }
+-}
+ 
+-proto.getMatrix = function(t, result) {
+-  this.recalcMatrix(t)
+-  var m = this.computedMatrix
+-  if(result) {
+-    for(var i=0; i<16; ++i) {
+-      result[i] = m[i]
+-    }
+-    return result
++  if (!shouldThrow && expectedException(actual, expected)) {
++    fail(actual, expected, 'Got unwanted exception' + message);
+   }
+-  return m
+-}
+-
+-proto.idle = function(t) {
+-  this.center.idle(t)
+-  this.radius.idle(t)
+-  this.rotation.idle(t)
+-}
+ 
+-proto.flush = function(t) {
+-  this.center.flush(t)
+-  this.radius.flush(t)
+-  this.rotation.flush(t)
++  if ((shouldThrow && actual && expected &&
++      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
++    throw actual;
++  }
+ }
+ 
+-proto.pan = function(t, dx, dy, dz) {
+-  dx = dx || 0.0
+-  dy = dy || 0.0
+-  dz = dz || 0.0
+-
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
+-
+-  var ux = mat[1]
+-  var uy = mat[5]
+-  var uz = mat[9]
+-  var ul = len3(ux, uy, uz)
+-  ux /= ul
+-  uy /= ul
+-  uz /= ul
++// 11. Expected to throw an error:
++// assert.throws(block, Error_opt, message_opt);
+ 
+-  var rx = mat[0]
+-  var ry = mat[4]
+-  var rz = mat[8]
+-  var ru = rx * ux + ry * uy + rz * uz
+-  rx -= ux * ru
+-  ry -= uy * ru
+-  rz -= uz * ru
+-  var rl = len3(rx, ry, rz)
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
++assert.throws = function(block, /*optional*/error, /*optional*/message) {
++  _throws.apply(this, [true].concat(pSlice.call(arguments)));
++};
+ 
+-  var fx = mat[2]
+-  var fy = mat[6]
+-  var fz = mat[10]
+-  var fu = fx * ux + fy * uy + fz * uz
+-  var fr = fx * rx + fy * ry + fz * rz
+-  fx -= fu * ux + fr * rx
+-  fy -= fu * uy + fr * ry
+-  fz -= fu * uz + fr * rz
+-  var fl = len3(fx, fy, fz)
+-  fx /= fl
+-  fy /= fl
+-  fz /= fl
++// EXTENSION! This is annoying to write outside this module.
++assert.doesNotThrow = function(block, /*optional*/message) {
++  _throws.apply(this, [false].concat(pSlice.call(arguments)));
++};
+ 
+-  var vx = rx * dx + ux * dy
+-  var vy = ry * dx + uy * dy
+-  var vz = rz * dx + uz * dy
++assert.ifError = function(err) { if (err) {throw err;}};
+ 
+-  this.center.move(t, vx, vy, vz)
++var objectKeys = Object.keys || function (obj) {
++  var keys = [];
++  for (var key in obj) {
++    if (hasOwn.call(obj, key)) keys.push(key);
++  }
++  return keys;
++};
+ 
+-  //Update z-component of radius
+-  var radius = Math.exp(this.computedRadius[0])
+-  radius = Math.max(1e-4, radius + dz)
+-  this.radius.set(t, Math.log(radius))
++},{"util/":455}],30:[function(require,module,exports){
++module.exports = function _atob(str) {
++  return atob(str)
+ }
+ 
+-proto.rotate = function(t, dx, dy, dz) {
+-  this.recalcMatrix(t)
+-
+-  dx = dx||0.0
+-  dy = dy||0.0
+-
+-  var mat = this.computedMatrix
+-
+-  var rx = mat[0]
+-  var ry = mat[4]
+-  var rz = mat[8]
++},{}],31:[function(require,module,exports){
++'use strict'
+ 
+-  var ux = mat[1]
+-  var uy = mat[5]
+-  var uz = mat[9]
++module.exports = barycentric
+ 
+-  var fx = mat[2]
+-  var fy = mat[6]
+-  var fz = mat[10]
++var solve = require('robust-linear-solve')
+ 
+-  var qx = dx * rx + dy * ux
+-  var qy = dx * ry + dy * uy
+-  var qz = dx * rz + dy * uz
++function reduce(x) {
++  var r = 0
++  for(var i=0; i<x.length; ++i) {
++    r += x[i]
++  }
++  return r
++}
+ 
+-  var bx = -(fy * qz - fz * qy)
+-  var by = -(fz * qx - fx * qz)
+-  var bz = -(fx * qy - fy * qx)  
+-  var bw = Math.sqrt(Math.max(0.0, 1.0 - Math.pow(bx,2) - Math.pow(by,2) - Math.pow(bz,2)))
+-  var bl = len4(bx, by, bz, bw)
+-  if(bl > 1e-6) {
+-    bx /= bl
+-    by /= bl
+-    bz /= bl
+-    bw /= bl
+-  } else {
+-    bx = by = bz = 0.0
+-    bw = 1.0
++function barycentric(simplex, point) {
++  var d = point.length
++  var A = new Array(d+1)
++  for(var i=0; i<d; ++i) {
++    var row = new Array(d+1)
++    for(var j=0; j<=d; ++j) {
++      row[j] = simplex[j][i]
++    }
++    A[i] = row
++  }
++  A[d] = new Array(d+1)
++  for(var i=0; i<=d; ++i) {
++    A[d][i] = 1
+   }
+ 
+-  var rotation = this.computedRotation
+-  var ax = rotation[0]
+-  var ay = rotation[1]
+-  var az = rotation[2]
+-  var aw = rotation[3]
++  var b = new Array(d+1)
++  for(var i=0; i<d; ++i) {
++    b[i] = point[i]
++  }
++  b[d] = 1.0
+ 
+-  var cx = ax*bw + aw*bx + ay*bz - az*by
+-  var cy = ay*bw + aw*by + az*bx - ax*bz
+-  var cz = az*bw + aw*bz + ax*by - ay*bx
+-  var cw = aw*bw - ax*bx - ay*by - az*bz
++  var x = solve(A, b)
++  var w = reduce(x[d+1])
+   
+-  //Apply roll
+-  if(dz) {
+-    bx = fx
+-    by = fy
+-    bz = fz
+-    var s = Math.sin(dz) / len3(bx, by, bz)
+-    bx *= s
+-    by *= s
+-    bz *= s
+-    bw = Math.cos(dx)
+-    cx = cx*bw + cw*bx + cy*bz - cz*by
+-    cy = cy*bw + cw*by + cz*bx - cx*bz
+-    cz = cz*bw + cw*bz + cx*by - cy*bx
+-    cw = cw*bw - cx*bx - cy*by - cz*bz
++  if(w === 0) {
++    w = 1.0
+   }
+-
+-  var cl = len4(cx, cy, cz, cw)
+-  if(cl > 1e-6) {
+-    cx /= cl
+-    cy /= cl
+-    cz /= cl
+-    cw /= cl
+-  } else {
+-    cx = cy = cz = 0.0
+-    cw = 1.0
++  var y = new Array(d+1)
++  for(var i=0; i<=d; ++i) {
++    y[i] = reduce(x[i]) / w
+   }
+-
+-  this.rotation.set(t, cx, cy, cz, cw)
++  return y
+ }
++},{"robust-linear-solve":417}],32:[function(require,module,exports){
++'use strict'
+ 
+-proto.lookAt = function(t, eye, center, up) {
+-  this.recalcMatrix(t)
++var rationalize = require('./lib/rationalize')
+ 
+-  center = center || this.computedCenter
+-  eye    = eye    || this.computedEye
+-  up     = up     || this.computedUp
++module.exports = add
+ 
+-  var mat = this.computedMatrix
+-  lookAt(mat, eye, center, up)
++function add(a, b) {
++  return rationalize(
++    a[0].mul(b[1]).add(b[0].mul(a[1])),
++    a[1].mul(b[1]))
++}
+ 
+-  var rotation = this.computedRotation
+-  quatFromFrame(rotation,
+-    mat[0], mat[1], mat[2],
+-    mat[4], mat[5], mat[6],
+-    mat[8], mat[9], mat[10])
+-  normalize4(rotation, rotation)
+-  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
++},{"./lib/rationalize":42}],33:[function(require,module,exports){
++'use strict'
+ 
+-  var fl = 0.0
+-  for(var i=0; i<3; ++i) {
+-    fl += Math.pow(center[i] - eye[i], 2)
+-  }
+-  this.radius.set(t, 0.5 * Math.log(Math.max(fl, 1e-6)))
++module.exports = cmp
+ 
+-  this.center.set(t, center[0], center[1], center[2])
++function cmp(a, b) {
++    return a[0].mul(b[1]).cmp(b[0].mul(a[1]))
+ }
+ 
+-proto.translate = function(t, dx, dy, dz) {
+-  this.center.move(t,
+-    dx||0.0,
+-    dy||0.0,
+-    dz||0.0)
+-}
++},{}],34:[function(require,module,exports){
++'use strict'
+ 
+-proto.setMatrix = function(t, matrix) {
++var rationalize = require('./lib/rationalize')
+ 
+-  var rotation = this.computedRotation
+-  quatFromFrame(rotation,
+-    matrix[0], matrix[1], matrix[2],
+-    matrix[4], matrix[5], matrix[6],
+-    matrix[8], matrix[9], matrix[10])
+-  normalize4(rotation, rotation)
+-  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
++module.exports = div
+ 
+-  var mat = this.computedMatrix
+-  invert44(mat, matrix)
+-  var w = mat[15]
+-  if(Math.abs(w) > 1e-6) {
+-    var cx = mat[12]/w
+-    var cy = mat[13]/w
+-    var cz = mat[14]/w
++function div(a, b) {
++  return rationalize(a[0].mul(b[1]), a[1].mul(b[0]))
++}
+ 
+-    this.recalcMatrix(t)  
+-    var r = Math.exp(this.computedRadius[0])
+-    this.center.set(t, cx-mat[2]*r, cy-mat[6]*r, cz-mat[10]*r)
+-    this.radius.idle(t)
+-  } else {
+-    this.center.idle(t)
+-    this.radius.idle(t)
+-  }
+-}
++},{"./lib/rationalize":42}],35:[function(require,module,exports){
++'use strict'
+ 
+-proto.setDistance = function(t, d) {
+-  if(d > 0) {
+-    this.radius.set(t, Math.log(d))
+-  }
+-}
++var isRat = require('./is-rat')
++var isBN = require('./lib/is-bn')
++var num2bn = require('./lib/num-to-bn')
++var str2bn = require('./lib/str-to-bn')
++var rationalize = require('./lib/rationalize')
++var div = require('./div')
+ 
+-proto.setDistanceLimits = function(lo, hi) {
+-  if(lo > 0) {
+-    lo = Math.log(lo)
++module.exports = makeRational
++
++function makeRational(numer, denom) {
++  if(isRat(numer)) {
++    if(denom) {
++      return div(numer, makeRational(denom))
++    }
++    return [numer[0].clone(), numer[1].clone()]
++  }
++  var shift = 0
++  var a, b
++  if(isBN(numer)) {
++    a = numer.clone()
++  } else if(typeof numer === 'string') {
++    a = str2bn(numer)
++  } else if(numer === 0) {
++    return [num2bn(0), num2bn(1)]
++  } else if(numer === Math.floor(numer)) {
++    a = num2bn(numer)
+   } else {
+-    lo = -Infinity    
++    while(numer !== Math.floor(numer)) {
++      numer = numer * Math.pow(2, 256)
++      shift -= 256
++    }
++    a = num2bn(numer)
+   }
+-  if(hi > 0) {
+-    hi = Math.log(hi)
++  if(isRat(denom)) {
++    a.mul(denom[1])
++    b = denom[0].clone()
++  } else if(isBN(denom)) {
++    b = denom.clone()
++  } else if(typeof denom === 'string') {
++    b = str2bn(denom)
++  } else if(!denom) {
++    b = num2bn(1)
++  } else if(denom === Math.floor(denom)) {
++    b = num2bn(denom)
+   } else {
+-    hi = Infinity
++    while(denom !== Math.floor(denom)) {
++      denom = denom * Math.pow(2, 256)
++      shift += 256
++    }
++    b = num2bn(denom)
+   }
+-  hi = Math.max(hi, lo)
+-  this.radius.bounds[0][0] = lo
+-  this.radius.bounds[1][0] = hi
+-}
+-
+-proto.getDistanceLimits = function(out) {
+-  var bounds = this.radius.bounds
+-  if(out) {
+-    out[0] = Math.exp(bounds[0][0])
+-    out[1] = Math.exp(bounds[1][0])
+-    return out
++  if(shift > 0) {
++    a = a.shln(shift)
++  } else if(shift < 0) {
++    b = b.shln(-shift)
+   }
+-  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
++  return rationalize(a, b)
+ }
+ 
+-proto.toJSON = function() {
+-  this.recalcMatrix(this.lastT())
+-  return {
+-    center:   this.computedCenter.slice(),
+-    rotation: this.computedRotation.slice(),
+-    distance: Math.log(this.computedRadius[0]),
+-    zoomMin:  this.radius.bounds[0][0],
+-    zoomMax:  this.radius.bounds[1][0]
+-  }
+-}
++},{"./div":34,"./is-rat":36,"./lib/is-bn":40,"./lib/num-to-bn":41,"./lib/rationalize":42,"./lib/str-to-bn":43}],36:[function(require,module,exports){
++'use strict'
+ 
+-proto.fromJSON = function(options) {
+-  var t = this.lastT()
+-  var c = options.center
+-  if(c) {
+-    this.center.set(t, c[0], c[1], c[2])
+-  }
+-  var r = options.rotation
+-  if(r) {
+-    this.rotation.set(t, r[0], r[1], r[2], r[3])
+-  }
+-  var d = options.distance
+-  if(d && d > 0) {
+-    this.radius.set(t, Math.log(d))
+-  }
+-  this.setDistanceLimits(options.zoomMin, options.zoomMax)
+-}
++var isBN = require('./lib/is-bn')
+ 
+-function createOrbitController(options) {
+-  options = options || {}
+-  var center   = options.center   || [0,0,0]
+-  var rotation = options.rotation || [0,0,0,1]
+-  var radius   = options.radius   || 1.0
++module.exports = isRat
+ 
+-  center = [].slice.call(center, 0, 3)
+-  rotation = [].slice.call(rotation, 0, 4)
+-  normalize4(rotation, rotation)
++function isRat(x) {
++  return Array.isArray(x) && x.length === 2 && isBN(x[0]) && isBN(x[1])
++}
+ 
+-  var result = new OrbitCameraController(
+-    rotation,
+-    center,
+-    Math.log(radius))
++},{"./lib/is-bn":40}],37:[function(require,module,exports){
++'use strict'
+ 
+-  result.setDistanceLimits(options.zoomMin, options.zoomMax)
++var bn = require('bn.js')
+ 
+-  if('eye' in options || 'up' in options) {
+-    result.lookAt(0, options.eye, options.center, options.up)
+-  }
++module.exports = sign
+ 
+-  return result
++function sign(x) {
++  return x.cmp(new bn(0))
+ }
+-},{"./lib/quatFromFrame":37,"filtered-vector":21,"gl-mat4/fromQuat":140,"gl-mat4/invert":143,"gl-mat4/lookAt":144}],39:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = createTurntableController
++},{"bn.js":50}],38:[function(require,module,exports){
++'use strict'
+ 
+-var filterVector = require('filtered-vector')
+-var invert44     = require('gl-mat4/invert')
+-var rotateM      = require('gl-mat4/rotate')
+-var cross        = require('gl-vec3/cross')
+-var normalize3   = require('gl-vec3/normalize')
+-var dot3         = require('gl-vec3/dot')
++module.exports = bn2num
+ 
+-function len3(x, y, z) {
+-  return Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2) + Math.pow(z, 2))
++//TODO: Make this better
++function bn2num(b) {
++  var l = b.length
++  var words = b.words
++  var out = 0
++  if (l === 1) {
++    out = words[0]
++  } else if (l === 2) {
++    out = words[0] + (words[1] * 0x4000000)
++  } else {
++    var out = 0
++    for (var i = 0; i < l; i++) {
++      var w = words[i]
++      out += w * Math.pow(0x4000000, i)
++    }
++  }
++  return b.sign ? -out : out
+ }
+ 
+-function clamp1(x) {
+-  return Math.min(1.0, Math.max(-1.0, x))
+-}
++},{}],39:[function(require,module,exports){
++'use strict'
+ 
+-function findOrthoPair(v) {
+-  var vx = Math.abs(v[0])
+-  var vy = Math.abs(v[1])
+-  var vz = Math.abs(v[2])
++var db = require('double-bits')
++var ctz = require('bit-twiddle').countTrailingZeros
+ 
+-  var u = [0,0,0]
+-  if(vx > Math.max(vy, vz)) {
+-    u[2] = 1
+-  } else if(vy > Math.max(vx, vz)) {
+-    u[0] = 1
+-  } else {
+-    u[1] = 1
+-  }
++module.exports = ctzNumber
+ 
+-  var vv = 0
+-  var uv = 0
+-  for(var i=0; i<3; ++i ) {
+-    vv += v[i] * v[i]
+-    uv += u[i] * v[i]
++//Counts the number of trailing zeros
++function ctzNumber(x) {
++  var l = ctz(db.lo(x))
++  if(l < 32) {
++    return l
+   }
+-  for(var i=0; i<3; ++i) {
+-    u[i] -= (uv / vv) *  v[i]
++  var h = ctz(db.hi(x))
++  if(h > 20) {
++    return 52
+   }
+-  normalize3(u, u)
+-  return u
++  return h + 32
+ }
+ 
+-function TurntableController(zoomMin, zoomMax, center, up, right, radius, theta, phi) {
+-  this.center = filterVector(center)
+-  this.up     = filterVector(up)
+-  this.right  = filterVector(right)
+-  this.radius = filterVector([radius])
+-  this.angle  = filterVector([theta, phi])
+-  this.angle.bounds = [[-Infinity,-Math.PI/2], [Infinity,Math.PI/2]]
+-  this.setDistanceLimits(zoomMin, zoomMax)
++},{"bit-twiddle":49,"double-bits":92}],40:[function(require,module,exports){
++'use strict'
+ 
+-  this.computedCenter = this.center.curve(0)
+-  this.computedUp     = this.up.curve(0)
+-  this.computedRight  = this.right.curve(0)
+-  this.computedRadius = this.radius.curve(0)
+-  this.computedAngle  = this.angle.curve(0)
+-  this.computedToward = [0,0,0]
+-  this.computedEye    = [0,0,0]
+-  this.computedMatrix = new Array(16)
+-  for(var i=0; i<16; ++i) {
+-    this.computedMatrix[i] = 0.5
+-  }
++var BN = require('bn.js')
+ 
+-  this.recalcMatrix(0)
++module.exports = isBN
++
++//Test if x is a bignumber
++//FIXME: obviously this is the wrong way to do it
++function isBN(x) {
++  return x && typeof x === 'object' && Boolean(x.words)
+ }
+ 
+-var proto = TurntableController.prototype
++},{"bn.js":50}],41:[function(require,module,exports){
++'use strict'
+ 
+-proto.setDistanceLimits = function(minDist, maxDist) {
+-  if(minDist > 0) {
+-    minDist = Math.log(minDist)
+-  } else {
+-    minDist = -Infinity
+-  }
+-  if(maxDist > 0) {
+-    maxDist = Math.log(maxDist)
++var BN = require('bn.js')
++var db = require('double-bits')
++
++module.exports = num2bn
++
++function num2bn(x) {
++  var e = db.exponent(x)
++  if(e < 52) {
++    return new BN(x)
+   } else {
+-    maxDist = Infinity
++    return (new BN(x * Math.pow(2, 52-e))).shln(e-52)
+   }
+-  maxDist = Math.max(maxDist, minDist)
+-  this.radius.bounds[0][0] = minDist
+-  this.radius.bounds[1][0] = maxDist
+ }
+ 
+-proto.getDistanceLimits = function(out) {
+-  var bounds = this.radius.bounds[0]
+-  if(out) {
+-    out[0] = Math.exp(bounds[0][0])
+-    out[1] = Math.exp(bounds[1][0])
+-    return out
+-  }
+-  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
+-}
++},{"bn.js":50,"double-bits":92}],42:[function(require,module,exports){
++'use strict'
+ 
+-proto.recalcMatrix = function(t) {
+-  //Recompute curves
+-  this.center.curve(t)
+-  this.up.curve(t)
+-  this.right.curve(t)
+-  this.radius.curve(t)
+-  this.angle.curve(t)
++var num2bn = require('./num-to-bn')
++var sign = require('./bn-sign')
+ 
+-  //Compute frame for camera matrix
+-  var up     = this.computedUp
+-  var right  = this.computedRight
+-  var uu = 0.0
+-  var ur = 0.0
+-  for(var i=0; i<3; ++i) {
+-    ur += up[i] * right[i]
+-    uu += up[i] * up[i]
++module.exports = rationalize
++
++function rationalize(numer, denom) {
++  var snumer = sign(numer)
++  var sdenom = sign(denom)
++  if(snumer === 0) {
++    return [num2bn(0), num2bn(1)]
+   }
+-  var ul = Math.sqrt(uu)
+-  var rr = 0.0
+-  for(var i=0; i<3; ++i) {
+-    right[i] -= up[i] * ur / uu
+-    rr       += right[i] * right[i]
+-    up[i]    /= ul
++  if(sdenom === 0) {
++    return [num2bn(0), num2bn(0)]
+   }
+-  var rl = Math.sqrt(rr)
+-  for(var i=0; i<3; ++i) {
+-    right[i] /= rl
++  if(sdenom < 0) {
++    numer = numer.neg()
++    denom = denom.neg()
+   }
++  var d = numer.gcd(denom)
++  if(d.cmpn(1)) {
++    return [ numer.div(d), denom.div(d) ]
++  }
++  return [ numer, denom ]
++}
+ 
+-  //Compute toward vector
+-  var toward = this.computedToward
+-  cross(toward, up, right)
+-  normalize3(toward, toward)
+-
+-  //Compute angular parameters
+-  var radius = Math.exp(this.computedRadius[0])
+-  var theta  = this.computedAngle[0]
+-  var phi    = this.computedAngle[1]
+-
+-  var ctheta = Math.cos(theta)
+-  var stheta = Math.sin(theta)
+-  var cphi   = Math.cos(phi)
+-  var sphi   = Math.sin(phi)
+-
+-  var center = this.computedCenter
++},{"./bn-sign":37,"./num-to-bn":41}],43:[function(require,module,exports){
++'use strict'
+ 
+-  var wx = ctheta * cphi 
+-  var wy = stheta * cphi
+-  var wz = sphi
++var BN = require('bn.js')
+ 
+-  var sx = -ctheta * sphi
+-  var sy = -stheta * sphi
+-  var sz = cphi
++module.exports = str2BN
+ 
+-  var eye = this.computedEye
+-  var mat = this.computedMatrix
+-  for(var i=0; i<3; ++i) {
+-    var x      = wx * right[i] + wy * toward[i] + wz * up[i]
+-    mat[4*i+1] = sx * right[i] + sy * toward[i] + sz * up[i]
+-    mat[4*i+2] = x
+-    mat[4*i+3] = 0.0
+-  }
++function str2BN(x) {
++  return new BN(x)
++}
+ 
+-  var ax = mat[1]
+-  var ay = mat[5]
+-  var az = mat[9]
+-  var bx = mat[2]
+-  var by = mat[6]
+-  var bz = mat[10]
+-  var cx = ay * bz - az * by
+-  var cy = az * bx - ax * bz
+-  var cz = ax * by - ay * bx
+-  var cl = len3(cx, cy, cz)
+-  cx /= cl
+-  cy /= cl
+-  cz /= cl
+-  mat[0] = cx
+-  mat[4] = cy
+-  mat[8] = cz
++},{"bn.js":50}],44:[function(require,module,exports){
++'use strict'
+ 
+-  for(var i=0; i<3; ++i) {
+-    eye[i] = center[i] + mat[2+4*i]*radius
+-  }
++var rationalize = require('./lib/rationalize')
+ 
+-  for(var i=0; i<3; ++i) {
+-    var rr = 0.0
+-    for(var j=0; j<3; ++j) {
+-      rr += mat[i+4*j] * eye[j]
+-    }
+-    mat[12+i] = -rr
+-  }
+-  mat[15] = 1.0
+-}
++module.exports = mul
+ 
+-proto.getMatrix = function(t, result) {
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
+-  if(result) {
+-    for(var i=0; i<16; ++i) {
+-      result[i] = mat[i]
+-    }
+-    return result
+-  }
+-  return mat
++function mul(a, b) {
++  return rationalize(a[0].mul(b[0]), a[1].mul(b[1]))
+ }
+ 
+-var zAxis = [0,0,0]
+-proto.rotate = function(t, dtheta, dphi, droll) {
+-  this.angle.move(t, dtheta, dphi)
+-  if(droll) {
+-    this.recalcMatrix(t)
+-
+-    var mat = this.computedMatrix
+-    zAxis[0] = mat[2]
+-    zAxis[1] = mat[6]
+-    zAxis[2] = mat[10]
++},{"./lib/rationalize":42}],45:[function(require,module,exports){
++'use strict'
+ 
+-    var up     = this.computedUp
+-    var right  = this.computedRight
+-    var toward = this.computedToward
++var bnsign = require('./lib/bn-sign')
+ 
+-    for(var i=0; i<3; ++i) {
+-      mat[4*i]   = up[i]
+-      mat[4*i+1] = right[i]
+-      mat[4*i+2] = toward[i]
+-    }
+-    rotateM(mat, mat, droll, zAxis)
+-    for(var i=0; i<3; ++i) {
+-      up[i] =    mat[4*i]
+-      right[i] = mat[4*i+1]
+-    }
++module.exports = sign
+ 
+-    this.up.set(t, up[0], up[1], up[2])
+-    this.right.set(t, right[0], right[1], right[2])
+-  }
++function sign(x) {
++  return bnsign(x[0]) * bnsign(x[1])
+ }
+ 
+-proto.pan = function(t, dx, dy, dz) {
+-  dx = dx || 0.0
+-  dy = dy || 0.0
+-  dz = dz || 0.0
+-
+-  this.recalcMatrix(t)
+-  var mat = this.computedMatrix
++},{"./lib/bn-sign":37}],46:[function(require,module,exports){
++'use strict'
+ 
+-  var dist = Math.exp(this.computedRadius[0])
++var rationalize = require('./lib/rationalize')
+ 
+-  var ux = mat[1]
+-  var uy = mat[5]
+-  var uz = mat[9]
+-  var ul = len3(ux, uy, uz)
+-  ux /= ul
+-  uy /= ul
+-  uz /= ul
++module.exports = sub
+ 
+-  var rx = mat[0]
+-  var ry = mat[4]
+-  var rz = mat[8]
+-  var ru = rx * ux + ry * uy + rz * uz
+-  rx -= ux * ru
+-  ry -= uy * ru
+-  rz -= uz * ru
+-  var rl = len3(rx, ry, rz)
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
++function sub(a, b) {
++  return rationalize(a[0].mul(b[1]).sub(a[1].mul(b[0])), a[1].mul(b[1]))
++}
+ 
+-  var vx = rx * dx + ux * dy
+-  var vy = ry * dx + uy * dy
+-  var vz = rz * dx + uz * dy
+-  this.center.move(t, vx, vy, vz)
++},{"./lib/rationalize":42}],47:[function(require,module,exports){
++'use strict'
+ 
+-  //Update z-component of radius
+-  var radius = Math.exp(this.computedRadius[0])
+-  radius = Math.max(1e-4, radius + dz)
+-  this.radius.set(t, Math.log(radius))
+-}
++var bn2num = require('./lib/bn-to-num')
++var ctz = require('./lib/ctz')
+ 
+-proto.translate = function(t, dx, dy, dz) {
+-  this.center.move(t,
+-    dx||0.0,
+-    dy||0.0,
+-    dz||0.0)
+-}
++module.exports = roundRat
+ 
+-//Recenters the coordinate axes
+-proto.setMatrix = function(t, mat, axes, noSnap) {
+-  
+-  //Get the axes for tare
+-  var ushift = 1
+-  if(typeof axes === 'number') {
+-    ushift = (axes)|0
+-  } 
+-  if(ushift < 0 || ushift > 3) {
+-    ushift = 1
++//Round a rational to the closest float
++function roundRat(f) {
++  var a = f[0]
++  var b = f[1]
++  if(a.cmpn(0) === 0) {
++    return 0
+   }
+-  var vshift = (ushift + 2) % 3
+-  var fshift = (ushift + 1) % 3
+-
+-  //Recompute state for new t value
+-  if(!mat) { 
+-    this.recalcMatrix(t)
+-    mat = this.computedMatrix
++  var h = a.divmod(b)
++  var iv = h.div
++  var x = bn2num(iv)
++  var ir = h.mod
++  if(ir.cmpn(0) === 0) {
++    return x
+   }
++  if(x) {
++    var s = ctz(x) + 4
++    var y = bn2num(ir.shln(s).divRound(b))
+ 
+-  //Get right and up vectors
+-  var ux = mat[ushift]
+-  var uy = mat[ushift+4]
+-  var uz = mat[ushift+8]
+-  if(!noSnap) {
+-    var ul = len3(ux, uy, uz)
+-    ux /= ul
+-    uy /= ul
+-    uz /= ul
++    // flip the sign of y if x is negative
++    if (x<0) {
++      y = -y;
++    }
++
++    return x + y * Math.pow(2, -s)
+   } else {
+-    var ax = Math.abs(ux)
+-    var ay = Math.abs(uy)
+-    var az = Math.abs(uz)
+-    var am = Math.max(ax,ay,az)
+-    if(ax === am) {
+-      ux = (ux < 0) ? -1 : 1
+-      uy = uz = 0
+-    } else if(az === am) {
+-      uz = (uz < 0) ? -1 : 1
+-      ux = uy = 0
+-    } else {
+-      uy = (uy < 0) ? -1 : 1
+-      ux = uz = 0
++    var ybits = b.bitLength() - ir.bitLength() + 53
++    var y = bn2num(ir.shln(ybits).divRound(b))
++    if(ybits < 1023) {
++      return y * Math.pow(2, -ybits)
+     }
++    y *= Math.pow(2, -1023)
++    return y * Math.pow(2, 1023-ybits)
+   }
++}
+ 
+-  var rx = mat[vshift]
+-  var ry = mat[vshift+4]
+-  var rz = mat[vshift+8]
+-  var ru = rx * ux + ry * uy + rz * uz
+-  rx -= ux * ru
+-  ry -= uy * ru
+-  rz -= uz * ru
+-  var rl = len3(rx, ry, rz)
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
+-  
+-  var fx = uy * rz - uz * ry
+-  var fy = uz * rx - ux * rz
+-  var fz = ux * ry - uy * rx
+-  var fl = len3(fx, fy, fz)
+-  fx /= fl
+-  fy /= fl
+-  fz /= fl
+-
+-  this.center.jump(t, ex, ey, ez)
+-  this.radius.idle(t)
+-  this.up.jump(t, ux, uy, uz)
+-  this.right.jump(t, rx, ry, rz)
++},{"./lib/bn-to-num":38,"./lib/ctz":39}],48:[function(require,module,exports){
++"use strict"
+ 
+-  var phi, theta
+-  if(ushift === 2) {
+-    var cx = mat[1]
+-    var cy = mat[5]
+-    var cz = mat[9]
+-    var cr = cx * rx + cy * ry + cz * rz
+-    var cf = cx * fx + cy * fy + cz * fz
+-    if(tu < 0) {
+-      phi = -Math.PI/2
++function compileSearch(funcName, predicate, reversed, extraArgs, useNdarray, earlyOut) {
++  var code = [
++    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
++earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
++";while(l<=h){\
++var m=(l+h)>>>1,x=a", useNdarray ? ".get(m)" : "[m]"]
++  if(earlyOut) {
++    if(predicate.indexOf("c") < 0) {
++      code.push(";if(x===y){return m}else if(x<=y){")
+     } else {
+-      phi = Math.PI/2
++      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
+     }
+-    theta = Math.atan2(cf, cr)
+   } else {
+-    var tx = mat[2]
+-    var ty = mat[6]
+-    var tz = mat[10]
+-    var tu = tx * ux + ty * uy + tz * uz
+-    var tr = tx * rx + ty * ry + tz * rz
+-    var tf = tx * fx + ty * fy + tz * fz
+-
+-    phi = Math.asin(clamp1(tu))
+-    theta = Math.atan2(tf, tr)
++    code.push(";if(", predicate, "){i=m;")
++  }
++  if(reversed) {
++    code.push("l=m+1}else{h=m-1}")
++  } else {
++    code.push("h=m-1}else{l=m+1}")
++  }
++  code.push("}")
++  if(earlyOut) {
++    code.push("return -1};")
++  } else {
++    code.push("return i};")
+   }
++  return code.join("")
++}
+ 
+-  this.angle.jump(t, theta, phi)
++function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
++  var result = new Function([
++  compileSearch("A", "x" + predicate + "y", reversed, ["y"], false, earlyOut),
++  compileSearch("B", "x" + predicate + "y", reversed, ["y"], true, earlyOut),
++  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], false, earlyOut),
++  compileSearch("Q", "c(x,y)" + predicate + "0", reversed, ["y", "c"], true, earlyOut),
++"function dispatchBsearch", suffix, "(a,y,c,l,h){\
++if(a.shape){\
++if(typeof(c)==='function'){\
++return Q(a,(l===undefined)?0:l|0,(h===undefined)?a.shape[0]-1:h|0,y,c)\
++}else{\
++return B(a,(c===undefined)?0:c|0,(l===undefined)?a.shape[0]-1:l|0,y)\
++}}else{\
++if(typeof(c)==='function'){\
++return P(a,(l===undefined)?0:l|0,(h===undefined)?a.length-1:h|0,y,c)\
++}else{\
++return A(a,(c===undefined)?0:c|0,(l===undefined)?a.length-1:l|0,y)\
++}}}\
++return dispatchBsearch", suffix].join(""))
++  return result()
++}
+ 
+-  this.recalcMatrix(t)
+-  var dx = mat[2]
+-  var dy = mat[6]
+-  var dz = mat[10]
++module.exports = {
++  ge: compileBoundsSearch(">=", false, "GE"),
++  gt: compileBoundsSearch(">", false, "GT"),
++  lt: compileBoundsSearch("<", true, "LT"),
++  le: compileBoundsSearch("<=", true, "LE"),
++  eq: compileBoundsSearch("-", true, "EQ", true)
++}
+ 
+-  var imat = this.computedMatrix
+-  invert44(imat, mat)
+-  var w  = imat[15]
+-  var ex = imat[12] / w
+-  var ey = imat[13] / w
+-  var ez = imat[14] / w
++},{}],49:[function(require,module,exports){
++/**
++ * Bit twiddling hacks for JavaScript.
++ *
++ * Author: Mikola Lysenko
++ *
++ * Ported from Stanford bit twiddling hack library:
++ *    http://graphics.stanford.edu/~seander/bithacks.html
++ */
+ 
+-  var gs = Math.exp(this.computedRadius[0])
+-  this.center.jump(t, ex-dx*gs, ey-dy*gs, ez-dz*gs)
++"use strict"; "use restrict";
++
++//Number of bits in an integer
++var INT_BITS = 32;
++
++//Constants
++exports.INT_BITS  = INT_BITS;
++exports.INT_MAX   =  0x7fffffff;
++exports.INT_MIN   = -1<<(INT_BITS-1);
++
++//Returns -1, 0, +1 depending on sign of x
++exports.sign = function(v) {
++  return (v > 0) - (v < 0);
+ }
+ 
+-proto.lastT = function() {
+-  return Math.max(
+-    this.center.lastT(),
+-    this.up.lastT(),
+-    this.right.lastT(),
+-    this.radius.lastT(),
+-    this.angle.lastT())
++//Computes absolute value of integer
++exports.abs = function(v) {
++  var mask = v >> (INT_BITS-1);
++  return (v ^ mask) - mask;
+ }
+ 
+-proto.idle = function(t) {
+-  this.center.idle(t)
+-  this.up.idle(t)
+-  this.right.idle(t)
+-  this.radius.idle(t)
+-  this.angle.idle(t)
++//Computes minimum of integers x and y
++exports.min = function(x, y) {
++  return y ^ ((x ^ y) & -(x < y));
+ }
+ 
+-proto.flush = function(t) {
+-  this.center.flush(t)
+-  this.up.flush(t)
+-  this.right.flush(t)
+-  this.radius.flush(t)
+-  this.angle.flush(t)
++//Computes maximum of integers x and y
++exports.max = function(x, y) {
++  return x ^ ((x ^ y) & -(x < y));
+ }
+ 
+-proto.setDistance = function(t, d) {
+-  if(d > 0) {
+-    this.radius.set(t, Math.log(d))
+-  }
++//Checks if a number is a power of two
++exports.isPow2 = function(v) {
++  return !(v & (v-1)) && (!!v);
+ }
+ 
+-proto.lookAt = function(t, eye, center, up) {
+-  this.recalcMatrix(t)
++//Computes log base 2 of v
++exports.log2 = function(v) {
++  var r, shift;
++  r =     (v > 0xFFFF) << 4; v >>>= r;
++  shift = (v > 0xFF  ) << 3; v >>>= shift; r |= shift;
++  shift = (v > 0xF   ) << 2; v >>>= shift; r |= shift;
++  shift = (v > 0x3   ) << 1; v >>>= shift; r |= shift;
++  return r | (v >> 1);
++}
+ 
+-  eye    = eye    || this.computedEye
+-  center = center || this.computedCenter
+-  up     = up     || this.computedUp
++//Computes log base 10 of v
++exports.log10 = function(v) {
++  return  (v >= 1000000000) ? 9 : (v >= 100000000) ? 8 : (v >= 10000000) ? 7 :
++          (v >= 1000000) ? 6 : (v >= 100000) ? 5 : (v >= 10000) ? 4 :
++          (v >= 1000) ? 3 : (v >= 100) ? 2 : (v >= 10) ? 1 : 0;
++}
+ 
+-  var ux = up[0]
+-  var uy = up[1]
+-  var uz = up[2]
+-  var ul = len3(ux, uy, uz)
+-  if(ul < 1e-6) {
+-    return
+-  }
+-  ux /= ul
+-  uy /= ul
+-  uz /= ul
++//Counts number of bits
++exports.popCount = function(v) {
++  v = v - ((v >>> 1) & 0x55555555);
++  v = (v & 0x33333333) + ((v >>> 2) & 0x33333333);
++  return ((v + (v >>> 4) & 0xF0F0F0F) * 0x1010101) >>> 24;
++}
+ 
+-  var tx = eye[0] - center[0]
+-  var ty = eye[1] - center[1]
+-  var tz = eye[2] - center[2]
+-  var tl = len3(tx, ty, tz)
+-  if(tl < 1e-6) {
+-    return
+-  }
+-  tx /= tl
+-  ty /= tl
+-  tz /= tl
++//Counts number of trailing zeros
++function countTrailingZeros(v) {
++  var c = 32;
++  v &= -v;
++  if (v) c--;
++  if (v & 0x0000FFFF) c -= 16;
++  if (v & 0x00FF00FF) c -= 8;
++  if (v & 0x0F0F0F0F) c -= 4;
++  if (v & 0x33333333) c -= 2;
++  if (v & 0x55555555) c -= 1;
++  return c;
++}
++exports.countTrailingZeros = countTrailingZeros;
+ 
+-  var right = this.computedRight
+-  var rx = right[0]
+-  var ry = right[1]
+-  var rz = right[2]
+-  var ru = ux*rx + uy*ry + uz*rz
+-  rx -= ru * ux
+-  ry -= ru * uy
+-  rz -= ru * uz
+-  var rl = len3(rx, ry, rz)
++//Rounds to next power of 2
++exports.nextPow2 = function(v) {
++  v += v === 0;
++  --v;
++  v |= v >>> 1;
++  v |= v >>> 2;
++  v |= v >>> 4;
++  v |= v >>> 8;
++  v |= v >>> 16;
++  return v + 1;
++}
+ 
+-  if(rl < 0.01) {
+-    rx = uy * tz - uz * ty
+-    ry = uz * tx - ux * tz
+-    rz = ux * ty - uy * tx
+-    rl = len3(rx, ry, rz)
+-    if(rl < 1e-6) {
+-      return
++//Rounds down to previous power of 2
++exports.prevPow2 = function(v) {
++  v |= v >>> 1;
++  v |= v >>> 2;
++  v |= v >>> 4;
++  v |= v >>> 8;
++  v |= v >>> 16;
++  return v - (v>>>1);
++}
++
++//Computes parity of word
++exports.parity = function(v) {
++  v ^= v >>> 16;
++  v ^= v >>> 8;
++  v ^= v >>> 4;
++  v &= 0xf;
++  return (0x6996 >>> v) & 1;
++}
++
++var REVERSE_TABLE = new Array(256);
++
++(function(tab) {
++  for(var i=0; i<256; ++i) {
++    var v = i, r = i, s = 7;
++    for (v >>>= 1; v; v >>>= 1) {
++      r <<= 1;
++      r |= v & 1;
++      --s;
+     }
++    tab[i] = (r << s) & 0xff;
+   }
+-  rx /= rl
+-  ry /= rl
+-  rz /= rl
+-
+-  this.up.set(t, ux, uy, uz)
+-  this.right.set(t, rx, ry, rz)
+-  this.center.set(t, center[0], center[1], center[2])
+-  this.radius.set(t, Math.log(tl))
++})(REVERSE_TABLE);
+ 
+-  var fx = uy * rz - uz * ry
+-  var fy = uz * rx - ux * rz
+-  var fz = ux * ry - uy * rx
+-  var fl = len3(fx, fy, fz)
+-  fx /= fl
+-  fy /= fl
+-  fz /= fl
++//Reverse bits in a 32 bit word
++exports.reverse = function(v) {
++  return  (REVERSE_TABLE[ v         & 0xff] << 24) |
++          (REVERSE_TABLE[(v >>> 8)  & 0xff] << 16) |
++          (REVERSE_TABLE[(v >>> 16) & 0xff] << 8)  |
++           REVERSE_TABLE[(v >>> 24) & 0xff];
++}
+ 
+-  var tu = ux*tx + uy*ty + uz*tz
+-  var tr = rx*tx + ry*ty + rz*tz
+-  var tf = fx*tx + fy*ty + fz*tz
++//Interleave bits of 2 coordinates with 16 bits.  Useful for fast quadtree codes
++exports.interleave2 = function(x, y) {
++  x &= 0xFFFF;
++  x = (x | (x << 8)) & 0x00FF00FF;
++  x = (x | (x << 4)) & 0x0F0F0F0F;
++  x = (x | (x << 2)) & 0x33333333;
++  x = (x | (x << 1)) & 0x55555555;
+ 
+-  var phi   = Math.asin(clamp1(tu))
+-  var theta = Math.atan2(tf, tr)
++  y &= 0xFFFF;
++  y = (y | (y << 8)) & 0x00FF00FF;
++  y = (y | (y << 4)) & 0x0F0F0F0F;
++  y = (y | (y << 2)) & 0x33333333;
++  y = (y | (y << 1)) & 0x55555555;
+ 
+-  var angleState = this.angle._state
+-  var lastTheta  = angleState[angleState.length-1]
+-  var lastPhi    = angleState[angleState.length-2]
+-  lastTheta      = lastTheta % (2.0 * Math.PI)
+-  var dp = Math.abs(lastTheta + 2.0 * Math.PI - theta)
+-  var d0 = Math.abs(lastTheta - theta)
+-  var dn = Math.abs(lastTheta - 2.0 * Math.PI - theta)
+-  if(dp < d0) {
+-    lastTheta += 2.0 * Math.PI
+-  }
+-  if(dn < d0) {
+-    lastTheta -= 2.0 * Math.PI
+-  }
++  return x | (y << 1);
++}
+ 
+-  this.angle.jump(this.angle.lastT(), lastTheta, lastPhi)
+-  this.angle.set(t, theta, phi)
++//Extracts the nth interleaved component
++exports.deinterleave2 = function(v, n) {
++  v = (v >>> n) & 0x55555555;
++  v = (v | (v >>> 1))  & 0x33333333;
++  v = (v | (v >>> 2))  & 0x0F0F0F0F;
++  v = (v | (v >>> 4))  & 0x00FF00FF;
++  v = (v | (v >>> 16)) & 0x000FFFF;
++  return (v << 16) >> 16;
+ }
+ 
+-function createTurntableController(options) {
+-  options = options || {}
+ 
+-  var center = options.center || [0,0,0]
+-  var up     = options.up     || [0,1,0]
+-  var right  = options.right  || findOrthoPair(up)
+-  var radius = options.radius || 1.0
+-  var theta  = options.theta  || 0.0
+-  var phi    = options.phi    || 0.0
++//Interleave bits of 3 coordinates, each with 10 bits.  Useful for fast octree codes
++exports.interleave3 = function(x, y, z) {
++  x &= 0x3FF;
++  x  = (x | (x<<16)) & 4278190335;
++  x  = (x | (x<<8))  & 251719695;
++  x  = (x | (x<<4))  & 3272356035;
++  x  = (x | (x<<2))  & 1227133513;
+ 
+-  center = [].slice.call(center, 0, 3)
++  y &= 0x3FF;
++  y  = (y | (y<<16)) & 4278190335;
++  y  = (y | (y<<8))  & 251719695;
++  y  = (y | (y<<4))  & 3272356035;
++  y  = (y | (y<<2))  & 1227133513;
++  x |= (y << 1);
++  
++  z &= 0x3FF;
++  z  = (z | (z<<16)) & 4278190335;
++  z  = (z | (z<<8))  & 251719695;
++  z  = (z | (z<<4))  & 3272356035;
++  z  = (z | (z<<2))  & 1227133513;
++  
++  return x | (z << 2);
++}
+ 
+-  up = [].slice.call(up, 0, 3)
+-  normalize3(up, up)
++//Extracts nth interleaved component of a 3-tuple
++exports.deinterleave3 = function(v, n) {
++  v = (v >>> n)       & 1227133513;
++  v = (v | (v>>>2))   & 3272356035;
++  v = (v | (v>>>4))   & 251719695;
++  v = (v | (v>>>8))   & 4278190335;
++  v = (v | (v>>>16))  & 0x3FF;
++  return (v<<22)>>22;
++}
+ 
+-  right = [].slice.call(right, 0, 3)
+-  normalize3(right, right)
++//Computes next combination in colexicographic order (this is mistakenly called nextPermutation on the bit twiddling hacks page)
++exports.nextCombination = function(v) {
++  var t = v | (v - 1);
++  return (t + 1) | (((~t & -~t) - 1) >>> (countTrailingZeros(v) + 1));
++}
+ 
+-  if('eye' in options) {
+-    var eye = options.eye
+-    var toward = [
+-      eye[0]-center[0],
+-      eye[1]-center[1],
+-      eye[2]-center[2]
+-    ]
+-    cross(right, toward, up)
+-    if(len3(right[0], right[1], right[2]) < 1e-6) {
+-      right = findOrthoPair(up)
+-    } else {
+-      normalize3(right, right)
+-    }
+ 
+-    radius = len3(toward[0], toward[1], toward[2])
++},{}],50:[function(require,module,exports){
++(function (module, exports) {
+ 
+-    var ut = dot3(up, toward) / radius
+-    var rt = dot3(right, toward) / radius
+-    phi    = Math.acos(ut)
+-    theta  = Math.acos(rt)
+-  }
++'use strict';
+ 
+-  //Use logarithmic coordinates for radius
+-  radius = Math.log(radius)
++// Utils
+ 
+-  //Return the controller
+-  return new TurntableController(
+-    options.zoomMin,
+-    options.zoomMax,
+-    center,
+-    up,
+-    right,
+-    radius,
+-    theta,
+-    phi)
++function assert(val, msg) {
++  if (!val)
++    throw new Error(msg || 'Assertion failed');
+ }
+-},{"filtered-vector":21,"gl-mat4/invert":143,"gl-mat4/rotate":147,"gl-vec3/cross":24,"gl-vec3/dot":25,"gl-vec3/normalize":28}],40:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = createViewController
++// Could use `inherits` module, but don't want to move from single file
++// architecture yet.
++function inherits(ctor, superCtor) {
++  ctor.super_ = superCtor;
++  var TempCtor = function () {};
++  TempCtor.prototype = superCtor.prototype;
++  ctor.prototype = new TempCtor();
++  ctor.prototype.constructor = ctor;
++}
+ 
+-var createTurntable = require('turntable-camera-controller')
+-var createOrbit     = require('orbit-camera-controller')
+-var createMatrix    = require('matrix-camera-controller')
++// BN
+ 
+-function ViewController(controllers, mode) {
+-  this._controllerNames = Object.keys(controllers)
+-  this._controllerList = this._controllerNames.map(function(n) {
+-    return controllers[n]
+-  })
+-  this._mode   = mode
+-  this._active = controllers[mode]
+-  if(!this._active) {
+-    this._mode   = 'turntable'
+-    this._active = controllers.turntable
++function BN(number, base, endian) {
++  // May be `new BN(bn)` ?
++  if (number !== null &&
++      typeof number === 'object' &&
++      Array.isArray(number.words)) {
++    return number;
+   }
+-  this.modes = this._controllerNames
+-  this.computedMatrix = this._active.computedMatrix
+-  this.computedEye    = this._active.computedEye
+-  this.computedUp     = this._active.computedUp
+-  this.computedCenter = this._active.computedCenter
+-  this.computedRadius = this._active.computedRadius
+-}
+ 
+-var proto = ViewController.prototype
++  this.sign = false;
++  this.words = null;
++  this.length = 0;
+ 
+-var COMMON_METHODS = [
+-  ['flush', 1],
+-  ['idle', 1],
+-  ['lookAt', 4],
+-  ['rotate', 4],
+-  ['pan', 4],
+-  ['translate', 4],
+-  ['setMatrix', 2],
+-  ['setDistanceLimits', 2],
+-  ['setDistance', 2]
+-]
++  // Reduction context
++  this.red = null;
+ 
+-COMMON_METHODS.forEach(function(method) {
+-  var name = method[0]
+-  var argNames = []
+-  for(var i=0; i<method[1]; ++i) {
+-    argNames.push('a'+i)
++  if (base === 'le' || base === 'be') {
++    endian = base;
++    base = 10;
+   }
+-  var code = 'var cc=this._controllerList;for(var i=0;i<cc.length;++i){cc[i].'+method[0]+'('+argNames.join()+')}'
+-  proto[name] = Function.apply(null, argNames.concat(code))
+-})
+-
+-proto.recalcMatrix = function(t) {
+-  this._active.recalcMatrix(t)
+-}
+ 
+-proto.getDistance = function(t) {
+-  return this._active.getDistance(t)
+-}
+-proto.getDistanceLimits = function(out) {
+-  return this._active.getDistanceLimits(out)
++  if (number !== null)
++    this._init(number || 0, base || 10, endian || 'be');
+ }
++if (typeof module === 'object')
++  module.exports = BN;
++else
++  exports.BN = BN;
+ 
+-proto.lastT = function() {
+-  return this._active.lastT()
+-}
++BN.BN = BN;
++BN.wordSize = 26;
+ 
+-proto.setMode = function(mode) {
+-  if(mode === this._mode) {
+-    return
+-  }
+-  var idx = this._controllerNames.indexOf(mode)
+-  if(idx < 0) {
+-    return
++BN.prototype._init = function init(number, base, endian) {
++  if (typeof number === 'number') {
++    return this._initNumber(number, base, endian);
++  } else if (typeof number === 'object') {
++    return this._initArray(number, base, endian);
+   }
+-  var prev  = this._active
+-  var next  = this._controllerList[idx]
+-  var lastT = Math.max(prev.lastT(), next.lastT())
+-
+-  prev.recalcMatrix(lastT)
+-  next.setMatrix(lastT, prev.computedMatrix)
+-  
+-  this._active = next
+-  this._mode   = mode
+-
+-  //Update matrix properties
+-  this.computedMatrix = this._active.computedMatrix
+-  this.computedEye    = this._active.computedEye
+-  this.computedUp     = this._active.computedUp
+-  this.computedCenter = this._active.computedCenter
+-  this.computedRadius = this._active.computedRadius
+-}
+-
+-proto.getMode = function() {
+-  return this._mode
+-}
+-
+-function createViewController(options) {
+-  options = options || {}
+-
+-  var eye       = options.eye    || [0,0,1]
+-  var center    = options.center || [0,0,0]
+-  var up        = options.up     || [0,1,0]
+-  var limits    = options.distanceLimits || [0, Infinity]
+-  var mode      = options.mode   || 'turntable'
+-
+-  var turntable = createTurntable()
+-  var orbit     = createOrbit()
+-  var matrix    = createMatrix()
+-
+-  turntable.setDistanceLimits(limits[0], limits[1])
+-  turntable.lookAt(0, eye, center, up)
+-  orbit.setDistanceLimits(limits[0], limits[1])
+-  orbit.lookAt(0, eye, center, up)
+-  matrix.setDistanceLimits(limits[0], limits[1])
+-  matrix.lookAt(0, eye, center, up)
+-
+-  return new ViewController({
+-    turntable: turntable,
+-    orbit: orbit,
+-    matrix: matrix
+-  }, mode)
+-}
+-},{"matrix-camera-controller":29,"orbit-camera-controller":38,"turntable-camera-controller":39}],41:[function(require,module,exports){
+-module.exports = alphaShape
++  if (base === 'hex')
++    base = 16;
++  assert(base === (base | 0) && base >= 2 && base <= 36);
+ 
+-var ac = require('alpha-complex')
+-var bnd = require('simplicial-complex-boundary')
++  number = number.toString().replace(/\s+/g, '');
++  var start = 0;
++  if (number[0] === '-')
++    start++;
+ 
+-function alphaShape(alpha, points) {
+-  return bnd(ac(alpha, points))
+-}
+-},{"alpha-complex":42,"simplicial-complex-boundary":45}],42:[function(require,module,exports){
+-'use strict'
++  if (base === 16)
++    this._parseHex(number, start);
++  else
++    this._parseBase(number, base, start);
+ 
+-module.exports = alphaComplex
++  if (number[0] === '-')
++    this.sign = true;
+ 
+-var delaunay = require('delaunay-triangulate')
+-var circumradius = require('circumradius')
++  this.strip();
+ 
+-function alphaComplex(alpha, points) {
+-  return delaunay(points).filter(function(cell) {
+-    var simplex = new Array(cell.length)
+-    for(var i=0; i<cell.length; ++i) {
+-      simplex[i] = points[cell[i]]
+-    }
+-    return circumradius(simplex) * alpha < 1
+-  })
+-}
+-},{"circumradius":43,"delaunay-triangulate":120}],43:[function(require,module,exports){
+-module.exports = circumradius
++  if (endian !== 'le')
++    return;
+ 
+-var circumcenter = require('circumcenter')
++  this._initArray(this.toArray(), base, endian);
++};
+ 
+-function circumradius(points) {
+-  var center = circumcenter(points)
+-  var avgDist = 0.0
+-  for(var i=0; i<points.length; ++i) {
+-    var p = points[i]
+-    for(var j=0; j<center.length; ++j) {
+-      avgDist += Math.pow(p[j] - center[j], 2)
+-    }
++BN.prototype._initNumber = function _initNumber(number, base, endian) {
++  if (number < 0) {
++    this.sign = true;
++    number = -number;
+   }
+-  return Math.sqrt(avgDist / points.length)
+-}
+-},{"circumcenter":44}],44:[function(require,module,exports){
+-"use strict"
+-
+-var dup = require("dup")
+-var solve = require("robust-linear-solve")
+-
+-function dot(a, b) {
+-  var s = 0.0
+-  var d = a.length
+-  for(var i=0; i<d; ++i) {
+-    s += a[i] * b[i]
++  if (number < 0x4000000) {
++    this.words = [ number & 0x3ffffff ];
++    this.length = 1;
++  } else if (number < 0x10000000000000) {
++    this.words = [
++      number & 0x3ffffff,
++      (number / 0x4000000) & 0x3ffffff
++    ];
++    this.length = 2;
++  } else {
++    assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
++    this.words = [
++      number & 0x3ffffff,
++      (number / 0x4000000) & 0x3ffffff,
++      1
++    ];
++    this.length = 3;
+   }
+-  return s
+-}
+ 
+-function barycentricCircumcenter(points) {
+-  var N = points.length
+-  if(N === 0) {
+-    return []
+-  }
+-  
+-  var D = points[0].length
+-  var A = dup([points.length+1, points.length+1], 1.0)
+-  var b = dup([points.length+1], 1.0)
+-  A[N][N] = 0.0
+-  for(var i=0; i<N; ++i) {
+-    for(var j=0; j<=i; ++j) {
+-      A[j][i] = A[i][j] = 2.0 * dot(points[i], points[j])
+-    }
+-    b[i] = dot(points[i], points[i])
+-  }
+-  var x = solve(A, b)
++  if (endian !== 'le')
++    return;
+ 
+-  var denom = 0.0
+-  var h = x[N+1]
+-  for(var i=0; i<h.length; ++i) {
+-    denom += h[i]
+-  }
++  // Reverse the bytes
++  this._initArray(this.toArray(), base, endian);
++};
+ 
+-  var y = new Array(N)
+-  for(var i=0; i<N; ++i) {
+-    var h = x[i]
+-    var numer = 0.0
+-    for(var j=0; j<h.length; ++j) {
+-      numer += h[j]
+-    }
+-    y[i] =  numer / denom
++BN.prototype._initArray = function _initArray(number, base, endian) {
++  // Perhaps a Uint8Array
++  assert(typeof number.length === 'number');
++  if (number.length <= 0) {
++    this.words = [ 0 ];
++    this.length = 1;
++    return this;
+   }
+ 
+-  return y
+-}
++  this.length = Math.ceil(number.length / 3);
++  this.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    this.words[i] = 0;
+ 
+-function circumcenter(points) {
+-  if(points.length === 0) {
+-    return []
+-  }
+-  var D = points[0].length
+-  var result = dup([D])
+-  var weights = barycentricCircumcenter(points)
+-  for(var i=0; i<points.length; ++i) {
+-    for(var j=0; j<D; ++j) {
+-      result[j] += points[i][j] * weights[i]
++  var off = 0;
++  if (endian === 'be') {
++    for (var i = number.length - 1, j = 0; i >= 0; i -= 3) {
++      var w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
++      this.words[j] |= (w << off) & 0x3ffffff;
++      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
++      off += 24;
++      if (off >= 26) {
++        off -= 26;
++        j++;
++      }
++    }
++  } else if (endian === 'le') {
++    for (var i = 0, j = 0; i < number.length; i += 3) {
++      var w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
++      this.words[j] |= (w << off) & 0x3ffffff;
++      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
++      off += 24;
++      if (off >= 26) {
++        off -= 26;
++        j++;
++      }
+     }
+   }
+-  return result
+-}
+-
+-circumcenter.barycenetric = barycentricCircumcenter
+-module.exports = circumcenter
+-},{"dup":121,"robust-linear-solve":436}],45:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = boundary
++  return this.strip();
++};
+ 
+-var bnd = require('boundary-cells')
+-var reduce = require('reduce-simplicial-complex')
++function parseHex(str, start, end) {
++  var r = 0;
++  var len = Math.min(str.length, end);
++  for (var i = start; i < len; i++) {
++    var c = str.charCodeAt(i) - 48;
+ 
+-function boundary(cells) {
+-  return reduce(bnd(cells))
+-}
++    r <<= 4;
+ 
+-},{"boundary-cells":46,"reduce-simplicial-complex":49}],46:[function(require,module,exports){
+-"use strict"
++    // 'a' - 'f'
++    if (c >= 49 && c <= 54)
++      r |= c - 49 + 0xa;
+ 
+-module.exports = boundary
++    // 'A' - 'F'
++    else if (c >= 17 && c <= 22)
++      r |= c - 17 + 0xa;
+ 
+-function boundary(cells) {
+-  var n = cells.length
+-  var sz = 0
+-  for(var i=0; i<n; ++i) {
+-    sz += cells[i].length
+-  }
+-  var result = new Array(sz)
+-  var ptr = 0
+-  for(var i=0; i<n; ++i) {
+-    var c = cells[i]
+-    var d = c.length
+-    for(var j=0; j<d; ++j) {
+-      var b = result[ptr++] = new Array(d-1)
+-      for(var k=1; k<d; ++k) {
+-        b[k-1] = c[(j+k)%d]
+-      }
+-    }
++    // '0' - '9'
++    else
++      r |= c & 0xf;
+   }
+-  return result
++  return r;
+ }
+ 
+-},{}],47:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = orientation
++BN.prototype._parseHex = function _parseHex(number, start) {
++  // Create possibly bigger array to ensure that it fits the number
++  this.length = Math.ceil((number.length - start) / 6);
++  this.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    this.words[i] = 0;
+ 
+-function orientation(s) {
+-  var p = 1
+-  for(var i=1; i<s.length; ++i) {
+-    for(var j=0; j<i; ++j) {
+-      if(s[i] < s[j]) {
+-        p = -p
+-      } else if(s[j] === s[i]) {
+-        return 0
+-      }
++  // Scan 24-bit chunks and add them to the number
++  var off = 0;
++  for (var i = number.length - 6, j = 0; i >= start; i -= 6) {
++    var w = parseHex(number, i, i + 6);
++    this.words[j] |= (w << off) & 0x3ffffff;
++    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
++    off += 24;
++    if (off >= 26) {
++      off -= 26;
++      j++;
+     }
+   }
+-  return p
+-}
+-
+-},{}],48:[function(require,module,exports){
+-'use strict'
+-
+-var compareCells = require('compare-cell')
+-var parity = require('cell-orientation')
+-
+-module.exports = compareOrientedCells
++  if (i + 6 !== start) {
++    var w = parseHex(number, start, i + 6);
++    this.words[j] |= (w << off) & 0x3ffffff;
++    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
++  }
++  this.strip();
++};
+ 
+-function compareOrientedCells(a, b) {
+-  return compareCells(a, b) || parity(a) - parity(b)
+-}
++function parseBase(str, start, end, mul) {
++  var r = 0;
++  var len = Math.min(str.length, end);
++  for (var i = start; i < len; i++) {
++    var c = str.charCodeAt(i) - 48;
+ 
+-},{"cell-orientation":47,"compare-cell":107}],49:[function(require,module,exports){
+-'use strict'
++    r *= mul;
+ 
+-var compareCell = require('compare-cell')
+-var compareOrientedCell = require('compare-oriented-cell')
+-var orientation = require('cell-orientation')
++    // 'a'
++    if (c >= 49)
++      r += c - 49 + 0xa;
+ 
+-module.exports = reduceCellComplex
++    // 'A'
++    else if (c >= 17)
++      r += c - 17 + 0xa;
+ 
+-function reduceCellComplex(cells) {
+-  cells.sort(compareOrientedCell)
+-  var n = cells.length
+-  var ptr = 0
+-  for(var i=0; i<n; ++i) {
+-    var c = cells[i]
+-    var o = orientation(c)
+-    if(o === 0) {
+-      continue
+-    }
+-    if(ptr > 0) {
+-      var f = cells[ptr-1]
+-      if(compareCell(c, f) === 0 &&
+-         orientation(f)    !== o) {
+-        ptr -= 1
+-        continue
+-      }
+-    }
+-    cells[ptr++] = c
++    // '0' - '9'
++    else
++      r += c;
+   }
+-  cells.length = ptr
+-  return cells
++  return r;
+ }
+ 
+-},{"cell-orientation":47,"compare-cell":107,"compare-oriented-cell":48}],50:[function(require,module,exports){
+-'use strict';
+-
+-var arraytools  = function () {
+-
+-  var that = {};
++BN.prototype._parseBase = function _parseBase(number, base, start) {
++  // Initialize as zero
++  this.words = [ 0 ];
++  this.length = 1;
+ 
+-  var RGB_REGEX =  /^rgba?\(\s*\d{1,3}\s*,\s*\d{1,3}\s*,\s*\d{1,3}\s*(,.*)?\)$/;
+-  var RGB_GROUP_REGEX = /^rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,?\s*(.*)?\)$/;
++  // Find length of limb in base
++  for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base)
++    limbLen++;
++  limbLen--;
++  limbPow = (limbPow / base) | 0;
+ 
+-  function isPlainObject (v) {
+-    return !Array.isArray(v) && v !== null && typeof v === 'object';
+-  }
++  var total = number.length - start;
++  var mod = total % limbLen;
++  var end = Math.min(total, total - mod) + start;
+ 
+-  function linspace (start, end, num) {
+-    var inc = (end - start) / Math.max(num - 1, 1);
+-    var a = [];
+-    for( var ii = 0; ii < num; ii++)
+-      a.push(start + ii*inc);
+-    return a;
+-  }
++  var word = 0;
++  for (var i = start; i < end; i += limbLen) {
++    word = parseBase(number, i, i + limbLen, base);
+ 
+-  function zip () {
+-      var arrays = [].slice.call(arguments);
+-      var lengths = arrays.map(function (a) {return a.length;});
+-      var len = Math.min.apply(null, lengths);
+-      var zipped = [];
+-      for (var i = 0; i < len; i++) {
+-          zipped[i] = [];
+-          for (var j = 0; j < arrays.length; ++j) {
+-              zipped[i][j] = arrays[j][i];
+-          }
+-      }
+-      return zipped;
++    this.imuln(limbPow);
++    if (this.words[0] + word < 0x4000000)
++      this.words[0] += word;
++    else
++      this._iaddn(word);
+   }
+ 
+-  function zip3 (a, b, c) {
+-      var len = Math.min.apply(null, [a.length, b.length, c.length]);
+-      var result = [];
+-      for (var n = 0; n < len; n++) {
+-          result.push([a[n], b[n], c[n]]);
+-      }
+-      return result;
+-  }
++  if (mod !== 0) {
++    var pow = 1;
++    var word = parseBase(number, i, number.length, base);
+ 
+-  function sum (A) {
+-    var acc = 0;
+-    accumulate(A, acc);
+-    function accumulate(x) {
+-      for (var i = 0; i < x.length; i++) {
+-        if (Array.isArray(x[i]))
+-          accumulate(x[i], acc);
+-        else
+-          acc += x[i];
+-      }
+-    }
+-    return acc;
++    for (var i = 0; i < mod; i++)
++      pow *= base;
++    this.imuln(pow);
++    if (this.words[0] + word < 0x4000000)
++      this.words[0] += word;
++    else
++      this._iaddn(word);
+   }
++};
+ 
+-  function copy2D (arr) {
+-    var carr = [];
+-    for (var i = 0; i < arr.length; ++i) {
+-      carr[i] = [];
+-      for (var j = 0; j < arr[i].length; ++j) {
+-        carr[i][j] = arr[i][j];
+-      }
+-    }
++BN.prototype.copy = function copy(dest) {
++  dest.words = new Array(this.length);
++  for (var i = 0; i < this.length; i++)
++    dest.words[i] = this.words[i];
++  dest.length = this.length;
++  dest.sign = this.sign;
++  dest.red = this.red;
++};
+ 
+-    return carr;
+-  }
++BN.prototype.clone = function clone() {
++  var r = new BN(null);
++  this.copy(r);
++  return r;
++};
+ 
++// Remove leading `0` from `this`
++BN.prototype.strip = function strip() {
++  while (this.length > 1 && this.words[this.length - 1] === 0)
++    this.length--;
++  return this._normSign();
++};
+ 
+-  function copy1D (arr) {
+-    var carr = [];
+-    for (var i = 0; i < arr.length; ++i) {
+-      carr[i] = arr[i];
+-    }
++BN.prototype._normSign = function _normSign() {
++  // -0 = 0
++  if (this.length === 1 && this.words[0] === 0)
++    this.sign = false;
++  return this;
++};
+ 
+-    return carr;
+-  }
++BN.prototype.inspect = function inspect() {
++  return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
++};
+ 
++/*
+ 
+-  function isEqual(arr1, arr2) {
+-    if(arr1.length !== arr2.length)
+-      return false;
+-    for(var i = arr1.length; i--;) {
+-      if(arr1[i] !== arr2[i])
+-        return false;
+-    }
++var zeros = [];
++var groupSizes = [];
++var groupBases = [];
+ 
+-    return true;
++var s = '';
++var i = -1;
++while (++i < BN.wordSize) {
++  zeros[i] = s;
++  s += '0';
++}
++groupSizes[0] = 0;
++groupSizes[1] = 0;
++groupBases[0] = 0;
++groupBases[1] = 0;
++var base = 2 - 1;
++while (++base < 36 + 1) {
++  var groupSize = 0;
++  var groupBase = 1;
++  while (groupBase < (1 << BN.wordSize) / base) {
++    groupBase *= base;
++    groupSize += 1;
+   }
++  groupSizes[base] = groupSize;
++  groupBases[base] = groupBase;
++}
+ 
++*/
+ 
+-  function str2RgbArray(str, twoFiftySix) {
+-    // convert hex or rbg strings to 0->1 or 0->255 rgb array
+-    var rgb,
+-        match;
++var zeros = [
++  '',
++  '0',
++  '00',
++  '000',
++  '0000',
++  '00000',
++  '000000',
++  '0000000',
++  '00000000',
++  '000000000',
++  '0000000000',
++  '00000000000',
++  '000000000000',
++  '0000000000000',
++  '00000000000000',
++  '000000000000000',
++  '0000000000000000',
++  '00000000000000000',
++  '000000000000000000',
++  '0000000000000000000',
++  '00000000000000000000',
++  '000000000000000000000',
++  '0000000000000000000000',
++  '00000000000000000000000',
++  '000000000000000000000000',
++  '0000000000000000000000000'
++];
+ 
+-    if (typeof str !== 'string') return str;
++var groupSizes = [
++  0, 0,
++  25, 16, 12, 11, 10, 9, 8,
++  8, 7, 7, 7, 7, 6, 6,
++  6, 6, 6, 6, 6, 5, 5,
++  5, 5, 5, 5, 5, 5, 5,
++  5, 5, 5, 5, 5, 5, 5
++];
+ 
+-    rgb = [];
+-    // hex notation
+-    if (str[0] === '#') {
+-      str = str.substr(1) // remove hash
+-      if (str.length === 3) str += str // fff -> ffffff
+-      match = parseInt(str, 16);
+-      rgb[0] = ((match >> 16) & 255);
+-      rgb[1] = ((match >> 8) & 255);
+-      rgb[2] = (match & 255);
+-    }
++var groupBases = [
++  0, 0,
++  33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
++  43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
++  16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
++  6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
++  24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
++];
+ 
+-    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
+-    else if (RGB_REGEX.test(str)) {
+-      match = str.match(RGB_GROUP_REGEX);
+-      rgb[0] = parseInt(match[1]);
+-      rgb[1] = parseInt(match[2]);
+-      rgb[2] = parseInt(match[3]);
++BN.prototype.toString = function toString(base, padding) {
++  base = base || 10;
++  if (base === 16 || base === 'hex') {
++    var out = '';
++    var off = 0;
++    var padding = padding | 0 || 1;
++    var carry = 0;
++    for (var i = 0; i < this.length; i++) {
++      var w = this.words[i];
++      var word = (((w << off) | carry) & 0xffffff).toString(16);
++      carry = (w >>> (24 - off)) & 0xffffff;
++      if (carry !== 0 || i !== this.length - 1)
++        out = zeros[6 - word.length] + word + out;
++      else
++        out = word + out;
++      off += 2;
++      if (off >= 26) {
++        off -= 26;
++        i--;
++      }
+     }
++    if (carry !== 0)
++      out = carry.toString(16) + out;
++    while (out.length % padding !== 0)
++      out = '0' + out;
++    if (this.sign)
++      out = '-' + out;
++    return out;
++  } else if (base === (base | 0) && base >= 2 && base <= 36) {
++    // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
++    var groupSize = groupSizes[base];
++    // var groupBase = Math.pow(base, groupSize);
++    var groupBase = groupBases[base];
++    var out = '';
++    var c = this.clone();
++    c.sign = false;
++    while (c.cmpn(0) !== 0) {
++      var r = c.modn(groupBase).toString(base);
++      c = c.idivn(groupBase);
+ 
+-    if (!twoFiftySix) {
+-      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
++      if (c.cmpn(0) !== 0)
++        out = zeros[groupSize - r.length] + r + out;
++      else
++        out = r + out;
+     }
+-
+-
+-    return rgb;
++    if (this.cmpn(0) === 0)
++      out = '0' + out;
++    if (this.sign)
++      out = '-' + out;
++    return out;
++  } else {
++    assert(false, 'Base should be between 2 and 36');
+   }
++};
+ 
++BN.prototype.toJSON = function toJSON() {
++  return this.toString(16);
++};
+ 
+-  function str2RgbaArray(str, twoFiftySix) {
+-    // convert hex or rbg strings to 0->1 or 0->255 rgb array
+-    var rgb,
+-        match;
++BN.prototype.toArray = function toArray(endian) {
++  this.strip();
++  var res = new Array(this.byteLength());
++  res[0] = 0;
+ 
+-    if (typeof str !== 'string') return str;
++  var q = this.clone();
++  if (endian !== 'le') {
++    // Assume big-endian
++    for (var i = 0; q.cmpn(0) !== 0; i++) {
++      var b = q.andln(0xff);
++      q.ishrn(8);
+ 
+-    rgb = [];
+-    // hex notation
+-    if (str[0] === '#') {
+-      str = str.substr(1) // remove hash
+-      if (str.length === 3) str += str // fff -> ffffff
+-      match = parseInt(str, 16);
+-      rgb[0] = ((match >> 16) & 255);
+-      rgb[1] = ((match >> 8) & 255);
+-      rgb[2] = (match & 255);
++      res[res.length - i - 1] = b;
+     }
++  } else {
++    // Assume little-endian
++    for (var i = 0; q.cmpn(0) !== 0; i++) {
++      var b = q.andln(0xff);
++      q.ishrn(8);
+ 
+-    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
+-    else if (RGB_REGEX.test(str)) {
+-      match = str.match(RGB_GROUP_REGEX);
+-      rgb[0] = parseInt(match[1]);
+-      rgb[1] = parseInt(match[2]);
+-      rgb[2] = parseInt(match[3]);
+-      if (match[4]) rgb[3] = parseFloat(match[4]);
+-      else rgb[3] = 1.0;
++      res[i] = b;
+     }
++  }
+ 
++  return res;
++};
+ 
+-
+-    if (!twoFiftySix) {
+-      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
++if (Math.clz32) {
++  BN.prototype._countBits = function _countBits(w) {
++    return 32 - Math.clz32(w);
++  };
++} else {
++  BN.prototype._countBits = function _countBits(w) {
++    var t = w;
++    var r = 0;
++    if (t >= 0x1000) {
++      r += 13;
++      t >>>= 13;
++    }
++    if (t >= 0x40) {
++      r += 7;
++      t >>>= 7;
++    }
++    if (t >= 0x8) {
++      r += 4;
++      t >>>= 4;
++    }
++    if (t >= 0x02) {
++      r += 2;
++      t >>>= 2;
+     }
++    return r + t;
++  };
++}
+ 
++BN.prototype._zeroBits = function _zeroBits(w) {
++  // Short-cut
++  if (w === 0)
++    return 26;
+ 
+-    return rgb;
++  var t = w;
++  var r = 0;
++  if ((t & 0x1fff) === 0) {
++    r += 13;
++    t >>>= 13;
++  }
++  if ((t & 0x7f) === 0) {
++    r += 7;
++    t >>>= 7;
+   }
++  if ((t & 0xf) === 0) {
++    r += 4;
++    t >>>= 4;
++  }
++  if ((t & 0x3) === 0) {
++    r += 2;
++    t >>>= 2;
++  }
++  if ((t & 0x1) === 0)
++    r++;
++  return r;
++};
+ 
++// Return number of used bits in a BN
++BN.prototype.bitLength = function bitLength() {
++  var hi = 0;
++  var w = this.words[this.length - 1];
++  var hi = this._countBits(w);
++  return (this.length - 1) * 26 + hi;
++};
+ 
++// Number of trailing zero bits
++BN.prototype.zeroBits = function zeroBits() {
++  if (this.cmpn(0) === 0)
++    return 0;
+ 
++  var r = 0;
++  for (var i = 0; i < this.length; i++) {
++    var b = this._zeroBits(this.words[i]);
++    r += b;
++    if (b !== 26)
++      break;
++  }
++  return r;
++};
+ 
++BN.prototype.byteLength = function byteLength() {
++  return Math.ceil(this.bitLength() / 8);
++};
+ 
+-  that.isPlainObject = isPlainObject;
+-  that.linspace = linspace;
+-  that.zip3 = zip3;
+-  that.sum = sum;
+-  that.zip = zip;
+-  that.isEqual = isEqual;
+-  that.copy2D = copy2D;
+-  that.copy1D = copy1D;
+-  that.str2RgbArray = str2RgbArray;
+-  that.str2RgbaArray = str2RgbaArray;
++// Return negative clone of `this`
++BN.prototype.neg = function neg() {
++  if (this.cmpn(0) === 0)
++    return this.clone();
+ 
+-  return that
++  var r = this.clone();
++  r.sign = !this.sign;
++  return r;
++};
+ 
+-}
+ 
++// Or `num` with `this` in-place
++BN.prototype.ior = function ior(num) {
++  this.sign = this.sign || num.sign;
+ 
+-module.exports = arraytools();
++  while (this.length < num.length)
++    this.words[this.length++] = 0;
+ 
+-},{}],51:[function(require,module,exports){
+-/**
+- * Bit twiddling hacks for JavaScript.
+- *
+- * Author: Mikola Lysenko
+- *
+- * Ported from Stanford bit twiddling hack library:
+- *    http://graphics.stanford.edu/~seander/bithacks.html
+- */
++  for (var i = 0; i < num.length; i++)
++    this.words[i] = this.words[i] | num.words[i];
+ 
+-"use strict"; "use restrict";
++  return this.strip();
++};
+ 
+-//Number of bits in an integer
+-var INT_BITS = 32;
+ 
+-//Constants
+-exports.INT_BITS  = INT_BITS;
+-exports.INT_MAX   =  0x7fffffff;
+-exports.INT_MIN   = -1<<(INT_BITS-1);
++// Or `num` with `this`
++BN.prototype.or = function or(num) {
++  if (this.length > num.length)
++    return this.clone().ior(num);
++  else
++    return num.clone().ior(this);
++};
+ 
+-//Returns -1, 0, +1 depending on sign of x
+-exports.sign = function(v) {
+-  return (v > 0) - (v < 0);
+-}
+ 
+-//Computes absolute value of integer
+-exports.abs = function(v) {
+-  var mask = v >> (INT_BITS-1);
+-  return (v ^ mask) - mask;
+-}
++// And `num` with `this` in-place
++BN.prototype.iand = function iand(num) {
++  this.sign = this.sign && num.sign;
+ 
+-//Computes minimum of integers x and y
+-exports.min = function(x, y) {
+-  return y ^ ((x ^ y) & -(x < y));
+-}
++  // b = min-length(num, this)
++  var b;
++  if (this.length > num.length)
++    b = num;
++  else
++    b = this;
+ 
+-//Computes maximum of integers x and y
+-exports.max = function(x, y) {
+-  return x ^ ((x ^ y) & -(x < y));
+-}
++  for (var i = 0; i < b.length; i++)
++    this.words[i] = this.words[i] & num.words[i];
+ 
+-//Checks if a number is a power of two
+-exports.isPow2 = function(v) {
+-  return !(v & (v-1)) && (!!v);
+-}
++  this.length = b.length;
+ 
+-//Computes log base 2 of v
+-exports.log2 = function(v) {
+-  var r, shift;
+-  r =     (v > 0xFFFF) << 4; v >>>= r;
+-  shift = (v > 0xFF  ) << 3; v >>>= shift; r |= shift;
+-  shift = (v > 0xF   ) << 2; v >>>= shift; r |= shift;
+-  shift = (v > 0x3   ) << 1; v >>>= shift; r |= shift;
+-  return r | (v >> 1);
+-}
++  return this.strip();
++};
+ 
+-//Computes log base 10 of v
+-exports.log10 = function(v) {
+-  return  (v >= 1000000000) ? 9 : (v >= 100000000) ? 8 : (v >= 10000000) ? 7 :
+-          (v >= 1000000) ? 6 : (v >= 100000) ? 5 : (v >= 10000) ? 4 :
+-          (v >= 1000) ? 3 : (v >= 100) ? 2 : (v >= 10) ? 1 : 0;
+-}
+ 
+-//Counts number of bits
+-exports.popCount = function(v) {
+-  v = v - ((v >>> 1) & 0x55555555);
+-  v = (v & 0x33333333) + ((v >>> 2) & 0x33333333);
+-  return ((v + (v >>> 4) & 0xF0F0F0F) * 0x1010101) >>> 24;
+-}
++// And `num` with `this`
++BN.prototype.and = function and(num) {
++  if (this.length > num.length)
++    return this.clone().iand(num);
++  else
++    return num.clone().iand(this);
++};
+ 
+-//Counts number of trailing zeros
+-function countTrailingZeros(v) {
+-  var c = 32;
+-  v &= -v;
+-  if (v) c--;
+-  if (v & 0x0000FFFF) c -= 16;
+-  if (v & 0x00FF00FF) c -= 8;
+-  if (v & 0x0F0F0F0F) c -= 4;
+-  if (v & 0x33333333) c -= 2;
+-  if (v & 0x55555555) c -= 1;
+-  return c;
+-}
+-exports.countTrailingZeros = countTrailingZeros;
+ 
+-//Rounds to next power of 2
+-exports.nextPow2 = function(v) {
+-  v += v === 0;
+-  --v;
+-  v |= v >>> 1;
+-  v |= v >>> 2;
+-  v |= v >>> 4;
+-  v |= v >>> 8;
+-  v |= v >>> 16;
+-  return v + 1;
+-}
++// Xor `num` with `this` in-place
++BN.prototype.ixor = function ixor(num) {
++  this.sign = this.sign || num.sign;
+ 
+-//Rounds down to previous power of 2
+-exports.prevPow2 = function(v) {
+-  v |= v >>> 1;
+-  v |= v >>> 2;
+-  v |= v >>> 4;
+-  v |= v >>> 8;
+-  v |= v >>> 16;
+-  return v - (v>>>1);
+-}
++  // a.length > b.length
++  var a;
++  var b;
++  if (this.length > num.length) {
++    a = this;
++    b = num;
++  } else {
++    a = num;
++    b = this;
++  }
+ 
+-//Computes parity of word
+-exports.parity = function(v) {
+-  v ^= v >>> 16;
+-  v ^= v >>> 8;
+-  v ^= v >>> 4;
+-  v &= 0xf;
+-  return (0x6996 >>> v) & 1;
+-}
++  for (var i = 0; i < b.length; i++)
++    this.words[i] = a.words[i] ^ b.words[i];
+ 
+-var REVERSE_TABLE = new Array(256);
++  if (this !== a)
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
+ 
+-(function(tab) {
+-  for(var i=0; i<256; ++i) {
+-    var v = i, r = i, s = 7;
+-    for (v >>>= 1; v; v >>>= 1) {
+-      r <<= 1;
+-      r |= v & 1;
+-      --s;
+-    }
+-    tab[i] = (r << s) & 0xff;
+-  }
+-})(REVERSE_TABLE);
++  this.length = a.length;
+ 
+-//Reverse bits in a 32 bit word
+-exports.reverse = function(v) {
+-  return  (REVERSE_TABLE[ v         & 0xff] << 24) |
+-          (REVERSE_TABLE[(v >>> 8)  & 0xff] << 16) |
+-          (REVERSE_TABLE[(v >>> 16) & 0xff] << 8)  |
+-           REVERSE_TABLE[(v >>> 24) & 0xff];
+-}
++  return this.strip();
++};
+ 
+-//Interleave bits of 2 coordinates with 16 bits.  Useful for fast quadtree codes
+-exports.interleave2 = function(x, y) {
+-  x &= 0xFFFF;
+-  x = (x | (x << 8)) & 0x00FF00FF;
+-  x = (x | (x << 4)) & 0x0F0F0F0F;
+-  x = (x | (x << 2)) & 0x33333333;
+-  x = (x | (x << 1)) & 0x55555555;
+ 
+-  y &= 0xFFFF;
+-  y = (y | (y << 8)) & 0x00FF00FF;
+-  y = (y | (y << 4)) & 0x0F0F0F0F;
+-  y = (y | (y << 2)) & 0x33333333;
+-  y = (y | (y << 1)) & 0x55555555;
++// Xor `num` with `this`
++BN.prototype.xor = function xor(num) {
++  if (this.length > num.length)
++    return this.clone().ixor(num);
++  else
++    return num.clone().ixor(this);
++};
+ 
+-  return x | (y << 1);
+-}
+ 
+-//Extracts the nth interleaved component
+-exports.deinterleave2 = function(v, n) {
+-  v = (v >>> n) & 0x55555555;
+-  v = (v | (v >>> 1))  & 0x33333333;
+-  v = (v | (v >>> 2))  & 0x0F0F0F0F;
+-  v = (v | (v >>> 4))  & 0x00FF00FF;
+-  v = (v | (v >>> 16)) & 0x000FFFF;
+-  return (v << 16) >> 16;
+-}
++// Set `bit` of `this`
++BN.prototype.setn = function setn(bit, val) {
++  assert(typeof bit === 'number' && bit >= 0);
+ 
++  var off = (bit / 26) | 0;
++  var wbit = bit % 26;
+ 
+-//Interleave bits of 3 coordinates, each with 10 bits.  Useful for fast octree codes
+-exports.interleave3 = function(x, y, z) {
+-  x &= 0x3FF;
+-  x  = (x | (x<<16)) & 4278190335;
+-  x  = (x | (x<<8))  & 251719695;
+-  x  = (x | (x<<4))  & 3272356035;
+-  x  = (x | (x<<2))  & 1227133513;
+-
+-  y &= 0x3FF;
+-  y  = (y | (y<<16)) & 4278190335;
+-  y  = (y | (y<<8))  & 251719695;
+-  y  = (y | (y<<4))  & 3272356035;
+-  y  = (y | (y<<2))  & 1227133513;
+-  x |= (y << 1);
+-  
+-  z &= 0x3FF;
+-  z  = (z | (z<<16)) & 4278190335;
+-  z  = (z | (z<<8))  & 251719695;
+-  z  = (z | (z<<4))  & 3272356035;
+-  z  = (z | (z<<2))  & 1227133513;
+-  
+-  return x | (z << 2);
+-}
+-
+-//Extracts nth interleaved component of a 3-tuple
+-exports.deinterleave3 = function(v, n) {
+-  v = (v >>> n)       & 1227133513;
+-  v = (v | (v>>>2))   & 3272356035;
+-  v = (v | (v>>>4))   & 251719695;
+-  v = (v | (v>>>8))   & 4278190335;
+-  v = (v | (v>>>16))  & 0x3FF;
+-  return (v<<22)>>22;
+-}
+-
+-//Computes next combination in colexicographic order (this is mistakenly called nextPermutation on the bit twiddling hacks page)
+-exports.nextCombination = function(v) {
+-  var t = v | (v - 1);
+-  return (t + 1) | (((~t & -~t) - 1) >>> (countTrailingZeros(v) + 1));
+-}
+-
+-
+-},{}],52:[function(require,module,exports){
+-// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
+-//
+-// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
+-//
+-// Originally from narwhal.js (http://narwhaljs.org)
+-// Copyright (c) 2009 Thomas Robinson <280north.com>
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a copy
+-// of this software and associated documentation files (the 'Software'), to
+-// deal in the Software without restriction, including without limitation the
+-// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+-// sell copies of the Software, and to permit persons to whom the Software is
+-// furnished to do so, subject to the following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included in
+-// all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+-// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+-// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
++  while (this.length <= off)
++    this.words[this.length++] = 0;
+ 
+-// when used in node, this will actually load the util module we depend on
+-// versus loading the builtin util module as happens otherwise
+-// this is a bug in node module loading as far as I am concerned
+-var util = require('util/');
++  if (val)
++    this.words[off] = this.words[off] | (1 << wbit);
++  else
++    this.words[off] = this.words[off] & ~(1 << wbit);
+ 
+-var pSlice = Array.prototype.slice;
+-var hasOwn = Object.prototype.hasOwnProperty;
++  return this.strip();
++};
+ 
+-// 1. The assert module provides functions that throw
+-// AssertionError's when particular conditions are not met. The
+-// assert module must conform to the following interface.
+ 
+-var assert = module.exports = ok;
++// Add `num` to `this` in-place
++BN.prototype.iadd = function iadd(num) {
++  // negative + positive
++  if (this.sign && !num.sign) {
++    this.sign = false;
++    var r = this.isub(num);
++    this.sign = !this.sign;
++    return this._normSign();
+ 
+-// 2. The AssertionError is defined in assert.
+-// new assert.AssertionError({ message: message,
+-//                             actual: actual,
+-//                             expected: expected })
++  // positive + negative
++  } else if (!this.sign && num.sign) {
++    num.sign = false;
++    var r = this.isub(num);
++    num.sign = true;
++    return r._normSign();
++  }
+ 
+-assert.AssertionError = function AssertionError(options) {
+-  this.name = 'AssertionError';
+-  this.actual = options.actual;
+-  this.expected = options.expected;
+-  this.operator = options.operator;
+-  if (options.message) {
+-    this.message = options.message;
+-    this.generatedMessage = false;
++  // a.length > b.length
++  var a;
++  var b;
++  if (this.length > num.length) {
++    a = this;
++    b = num;
+   } else {
+-    this.message = getMessage(this);
+-    this.generatedMessage = true;
++    a = num;
++    b = this;
+   }
+-  var stackStartFunction = options.stackStartFunction || fail;
+ 
+-  if (Error.captureStackTrace) {
+-    Error.captureStackTrace(this, stackStartFunction);
++  var carry = 0;
++  for (var i = 0; i < b.length; i++) {
++    var r = a.words[i] + b.words[i] + carry;
++    this.words[i] = r & 0x3ffffff;
++    carry = r >>> 26;
++  }
++  for (; carry !== 0 && i < a.length; i++) {
++    var r = a.words[i] + carry;
++    this.words[i] = r & 0x3ffffff;
++    carry = r >>> 26;
+   }
+-  else {
+-    // non v8 browsers so we can have a stacktrace
+-    var err = new Error();
+-    if (err.stack) {
+-      var out = err.stack;
+ 
+-      // try to strip useless frames
+-      var fn_name = stackStartFunction.name;
+-      var idx = out.indexOf('\n' + fn_name);
+-      if (idx >= 0) {
+-        // once we have located the function frame
+-        // we need to strip out everything before it (and its line)
+-        var next_line = out.indexOf('\n', idx + 1);
+-        out = out.substring(next_line + 1);
+-      }
++  this.length = a.length;
++  if (carry !== 0) {
++    this.words[this.length] = carry;
++    this.length++;
++  // Copy the rest of the words
++  } else if (a !== this) {
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
++  }
+ 
+-      this.stack = out;
+-    }
++  return this;
++};
++
++// Add `num` to `this`
++BN.prototype.add = function add(num) {
++  if (num.sign && !this.sign) {
++    num.sign = false;
++    var res = this.sub(num);
++    num.sign = true;
++    return res;
++  } else if (!num.sign && this.sign) {
++    this.sign = false;
++    var res = num.sub(this);
++    this.sign = true;
++    return res;
+   }
++
++  if (this.length > num.length)
++    return this.clone().iadd(num);
++  else
++    return num.clone().iadd(this);
+ };
+ 
+-// assert.AssertionError instanceof Error
+-util.inherits(assert.AssertionError, Error);
++// Subtract `num` from `this` in-place
++BN.prototype.isub = function isub(num) {
++  // this - (-num) = this + num
++  if (num.sign) {
++    num.sign = false;
++    var r = this.iadd(num);
++    num.sign = true;
++    return r._normSign();
+ 
+-function replacer(key, value) {
+-  if (util.isUndefined(value)) {
+-    return '' + value;
+-  }
+-  if (util.isNumber(value) && !isFinite(value)) {
+-    return value.toString();
++  // -this - num = -(this + num)
++  } else if (this.sign) {
++    this.sign = false;
++    this.iadd(num);
++    this.sign = true;
++    return this._normSign();
+   }
+-  if (util.isFunction(value) || util.isRegExp(value)) {
+-    return value.toString();
++
++  // At this point both numbers are positive
++  var cmp = this.cmp(num);
++
++  // Optimization - zeroify
++  if (cmp === 0) {
++    this.sign = false;
++    this.length = 1;
++    this.words[0] = 0;
++    return this;
+   }
+-  return value;
+-}
+ 
+-function truncate(s, n) {
+-  if (util.isString(s)) {
+-    return s.length < n ? s : s.slice(0, n);
++  // a > b
++  var a;
++  var b;
++  if (cmp > 0) {
++    a = this;
++    b = num;
+   } else {
+-    return s;
++    a = num;
++    b = this;
+   }
+-}
+ 
+-function getMessage(self) {
+-  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
+-         self.operator + ' ' +
+-         truncate(JSON.stringify(self.expected, replacer), 128);
+-}
++  var carry = 0;
++  for (var i = 0; i < b.length; i++) {
++    var r = a.words[i] - b.words[i] + carry;
++    carry = r >> 26;
++    this.words[i] = r & 0x3ffffff;
++  }
++  for (; carry !== 0 && i < a.length; i++) {
++    var r = a.words[i] + carry;
++    carry = r >> 26;
++    this.words[i] = r & 0x3ffffff;
++  }
+ 
+-// At present only the three keys mentioned above are used and
+-// understood by the spec. Implementations or sub modules can pass
+-// other keys to the AssertionError's constructor - they will be
+-// ignored.
++  // Copy rest of the words
++  if (carry === 0 && i < a.length && a !== this)
++    for (; i < a.length; i++)
++      this.words[i] = a.words[i];
++  this.length = Math.max(this.length, i);
+ 
+-// 3. All of the following functions must throw an AssertionError
+-// when a corresponding condition is not met, with a message that
+-// may be undefined if not provided.  All assertion methods provide
+-// both the actual and expected values to the assertion error for
+-// display purposes.
++  if (a !== this)
++    this.sign = true;
+ 
+-function fail(actual, expected, message, operator, stackStartFunction) {
+-  throw new assert.AssertionError({
+-    message: message,
+-    actual: actual,
+-    expected: expected,
+-    operator: operator,
+-    stackStartFunction: stackStartFunction
+-  });
+-}
++  return this.strip();
++};
+ 
+-// EXTENSION! allows for well behaved errors defined elsewhere.
+-assert.fail = fail;
++// Subtract `num` from `this`
++BN.prototype.sub = function sub(num) {
++  return this.clone().isub(num);
++};
+ 
+-// 4. Pure assertion tests whether a value is truthy, as determined
+-// by !!guard.
+-// assert.ok(guard, message_opt);
+-// This statement is equivalent to assert.equal(true, !!guard,
+-// message_opt);. To test strictly for the value true, use
+-// assert.strictEqual(true, guard, message_opt);.
++/*
++// NOTE: This could be potentionally used to generate loop-less multiplications
++function _genCombMulTo(alen, blen) {
++  var len = alen + blen - 1;
++  var src = [
++    'var a = this.words, b = num.words, o = out.words, c = 0, w, ' +
++        'mask = 0x3ffffff, shift = 0x4000000;',
++    'out.length = ' + len + ';'
++  ];
++  for (var k = 0; k < len; k++) {
++    var minJ = Math.max(0, k - alen + 1);
++    var maxJ = Math.min(k, blen - 1);
+ 
+-function ok(value, message) {
+-  if (!value) fail(value, true, message, '==', assert.ok);
++    for (var j = minJ; j <= maxJ; j++) {
++      var i = k - j;
++      var mul = 'a[' + i + '] * b[' + j + ']';
++
++      if (j === minJ) {
++        src.push('w = ' + mul + ' + c;');
++        src.push('c = (w / shift) | 0;');
++      } else {
++        src.push('w += ' + mul + ';');
++        src.push('c += (w / shift) | 0;');
++      }
++      src.push('w &= mask;');
++    }
++    src.push('o[' + k + '] = w;');
++  }
++  src.push('if (c !== 0) {',
++           '  o[' + k + '] = c;',
++           '  out.length++;',
++           '}',
++           'return out;');
++
++  return src.join('\n');
+ }
+-assert.ok = ok;
++*/
+ 
+-// 5. The equality assertion tests shallow, coercive equality with
+-// ==.
+-// assert.equal(actual, expected, message_opt);
++BN.prototype._smallMulTo = function _smallMulTo(num, out) {
++  out.sign = num.sign !== this.sign;
++  out.length = this.length + num.length;
+ 
+-assert.equal = function equal(actual, expected, message) {
+-  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
++  var carry = 0;
++  for (var k = 0; k < out.length - 1; k++) {
++    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
++    // note that ncarry could be >= 0x3ffffff
++    var ncarry = carry >>> 26;
++    var rword = carry & 0x3ffffff;
++    var maxJ = Math.min(k, num.length - 1);
++    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i] | 0;
++      var b = num.words[j] | 0;
++      var r = a * b;
++
++      var lo = r & 0x3ffffff;
++      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
++      lo = (lo + rword) | 0;
++      rword = lo & 0x3ffffff;
++      ncarry = (ncarry + (lo >>> 26)) | 0;
++    }
++    out.words[k] = rword;
++    carry = ncarry;
++  }
++  if (carry !== 0) {
++    out.words[k] = carry;
++  } else {
++    out.length--;
++  }
++
++  return out.strip();
+ };
+ 
+-// 6. The non-equality assertion tests for whether two objects are not equal
+-// with != assert.notEqual(actual, expected, message_opt);
++BN.prototype._bigMulTo = function _bigMulTo(num, out) {
++  out.sign = num.sign !== this.sign;
++  out.length = this.length + num.length;
+ 
+-assert.notEqual = function notEqual(actual, expected, message) {
+-  if (actual == expected) {
+-    fail(actual, expected, message, '!=', assert.notEqual);
++  var carry = 0;
++  var hncarry = 0;
++  for (var k = 0; k < out.length - 1; k++) {
++    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
++    // note that ncarry could be >= 0x3ffffff
++    var ncarry = hncarry;
++    hncarry = 0;
++    var rword = carry & 0x3ffffff;
++    var maxJ = Math.min(k, num.length - 1);
++    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i] | 0;
++      var b = num.words[j] | 0;
++      var r = a * b;
++
++      var lo = r & 0x3ffffff;
++      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
++      lo = (lo + rword) | 0;
++      rword = lo & 0x3ffffff;
++      ncarry = (ncarry + (lo >>> 26)) | 0;
++
++      hncarry += ncarry >>> 26;
++      ncarry &= 0x3ffffff;
++    }
++    out.words[k] = rword;
++    carry = ncarry;
++    ncarry = hncarry;
++  }
++  if (carry !== 0) {
++    out.words[k] = carry;
++  } else {
++    out.length--;
+   }
++
++  return out.strip();
+ };
+ 
+-// 7. The equivalence assertion tests a deep equality relation.
+-// assert.deepEqual(actual, expected, message_opt);
++BN.prototype.mulTo = function mulTo(num, out) {
++  var res;
++  if (this.length + num.length < 63)
++    res = this._smallMulTo(num, out);
++  else
++    res = this._bigMulTo(num, out);
++  return res;
++};
+ 
+-assert.deepEqual = function deepEqual(actual, expected, message) {
+-  if (!_deepEqual(actual, expected)) {
+-    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
+-  }
++// Multiply `this` by `num`
++BN.prototype.mul = function mul(num) {
++  var out = new BN(null);
++  out.words = new Array(this.length + num.length);
++  return this.mulTo(num, out);
+ };
+ 
+-function _deepEqual(actual, expected) {
+-  // 7.1. All identical values are equivalent, as determined by ===.
+-  if (actual === expected) {
+-    return true;
++// In-place Multiplication
++BN.prototype.imul = function imul(num) {
++  if (this.cmpn(0) === 0 || num.cmpn(0) === 0) {
++    this.words[0] = 0;
++    this.length = 1;
++    return this;
++  }
+ 
+-  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
+-    if (actual.length != expected.length) return false;
++  var tlen = this.length;
++  var nlen = num.length;
+ 
+-    for (var i = 0; i < actual.length; i++) {
+-      if (actual[i] !== expected[i]) return false;
++  this.sign = num.sign !== this.sign;
++  this.length = this.length + num.length;
++  this.words[this.length - 1] = 0;
++
++  for (var k = this.length - 2; k >= 0; k--) {
++    // Sum all words with the same `i + j = k` and accumulate `carry`,
++    // note that carry could be >= 0x3ffffff
++    var carry = 0;
++    var rword = 0;
++    var maxJ = Math.min(k, nlen - 1);
++    for (var j = Math.max(0, k - tlen + 1); j <= maxJ; j++) {
++      var i = k - j;
++      var a = this.words[i];
++      var b = num.words[j];
++      var r = a * b;
++
++      var lo = r & 0x3ffffff;
++      carry += (r / 0x4000000) | 0;
++      lo += rword;
++      rword = lo & 0x3ffffff;
++      carry += lo >>> 26;
+     }
++    this.words[k] = rword;
++    this.words[k + 1] += carry;
++    carry = 0;
++  }
+ 
+-    return true;
++  // Propagate overflows
++  var carry = 0;
++  for (var i = 1; i < this.length; i++) {
++    var w = this.words[i] + carry;
++    this.words[i] = w & 0x3ffffff;
++    carry = w >>> 26;
++  }
+ 
+-  // 7.2. If the expected value is a Date object, the actual value is
+-  // equivalent if it is also a Date object that refers to the same time.
+-  } else if (util.isDate(actual) && util.isDate(expected)) {
+-    return actual.getTime() === expected.getTime();
++  return this.strip();
++};
+ 
+-  // 7.3 If the expected value is a RegExp object, the actual value is
+-  // equivalent if it is also a RegExp object with the same source and
+-  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
+-  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
+-    return actual.source === expected.source &&
+-           actual.global === expected.global &&
+-           actual.multiline === expected.multiline &&
+-           actual.lastIndex === expected.lastIndex &&
+-           actual.ignoreCase === expected.ignoreCase;
++BN.prototype.imuln = function imuln(num) {
++  assert(typeof num === 'number');
+ 
+-  // 7.4. Other pairs that do not both pass typeof value == 'object',
+-  // equivalence is determined by ==.
+-  } else if (!util.isObject(actual) && !util.isObject(expected)) {
+-    return actual == expected;
++  // Carry
++  var carry = 0;
++  for (var i = 0; i < this.length; i++) {
++    var w = this.words[i] * num;
++    var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
++    carry >>= 26;
++    carry += (w / 0x4000000) | 0;
++    // NOTE: lo is 27bit maximum
++    carry += lo >>> 26;
++    this.words[i] = lo & 0x3ffffff;
++  }
+ 
+-  // 7.5 For all other Object pairs, including Array objects, equivalence is
+-  // determined by having the same number of owned properties (as verified
+-  // with Object.prototype.hasOwnProperty.call), the same set of keys
+-  // (although not necessarily the same order), equivalent values for every
+-  // corresponding key, and an identical 'prototype' property. Note: this
+-  // accounts for both named and indexed properties on Arrays.
+-  } else {
+-    return objEquiv(actual, expected);
++  if (carry !== 0) {
++    this.words[i] = carry;
++    this.length++;
+   }
+-}
+ 
+-function isArguments(object) {
+-  return Object.prototype.toString.call(object) == '[object Arguments]';
+-}
++  return this;
++};
+ 
+-function objEquiv(a, b) {
+-  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
+-    return false;
+-  // an identical 'prototype' property.
+-  if (a.prototype !== b.prototype) return false;
+-  // if one is a primitive, the other must be same
+-  if (util.isPrimitive(a) || util.isPrimitive(b)) {
+-    return a === b;
+-  }
+-  var aIsArgs = isArguments(a),
+-      bIsArgs = isArguments(b);
+-  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
+-    return false;
+-  if (aIsArgs) {
+-    a = pSlice.call(a);
+-    b = pSlice.call(b);
+-    return _deepEqual(a, b);
+-  }
+-  var ka = objectKeys(a),
+-      kb = objectKeys(b),
+-      key, i;
+-  // having the same number of owned properties (keys incorporates
+-  // hasOwnProperty)
+-  if (ka.length != kb.length)
+-    return false;
+-  //the same set of keys (although not necessarily the same order),
+-  ka.sort();
+-  kb.sort();
+-  //~~~cheap key test
+-  for (i = ka.length - 1; i >= 0; i--) {
+-    if (ka[i] != kb[i])
+-      return false;
+-  }
+-  //equivalent values for every corresponding key, and
+-  //~~~possibly expensive deep test
+-  for (i = ka.length - 1; i >= 0; i--) {
+-    key = ka[i];
+-    if (!_deepEqual(a[key], b[key])) return false;
+-  }
+-  return true;
+-}
+-
+-// 8. The non-equivalence assertion tests for any deep inequality.
+-// assert.notDeepEqual(actual, expected, message_opt);
+-
+-assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
+-  if (_deepEqual(actual, expected)) {
+-    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
+-  }
++BN.prototype.muln = function muln(num) {
++  return this.clone().imuln(num);
+ };
+ 
+-// 9. The strict equality assertion tests strict equality, as determined by ===.
+-// assert.strictEqual(actual, expected, message_opt);
++// `this` * `this`
++BN.prototype.sqr = function sqr() {
++  return this.mul(this);
++};
+ 
+-assert.strictEqual = function strictEqual(actual, expected, message) {
+-  if (actual !== expected) {
+-    fail(actual, expected, message, '===', assert.strictEqual);
+-  }
++// `this` * `this` in-place
++BN.prototype.isqr = function isqr() {
++  return this.mul(this);
+ };
+ 
+-// 10. The strict non-equality assertion tests for strict inequality, as
+-// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);
++// Shift-left in-place
++BN.prototype.ishln = function ishln(bits) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var r = bits % 26;
++  var s = (bits - r) / 26;
++  var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
+ 
+-assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
+-  if (actual === expected) {
+-    fail(actual, expected, message, '!==', assert.notStrictEqual);
++  if (r !== 0) {
++    var carry = 0;
++    for (var i = 0; i < this.length; i++) {
++      var newCarry = this.words[i] & carryMask;
++      var c = (this.words[i] - newCarry) << r;
++      this.words[i] = c | carry;
++      carry = newCarry >>> (26 - r);
++    }
++    if (carry) {
++      this.words[i] = carry;
++      this.length++;
++    }
+   }
+-};
+ 
+-function expectedException(actual, expected) {
+-  if (!actual || !expected) {
+-    return false;
++  if (s !== 0) {
++    for (var i = this.length - 1; i >= 0; i--)
++      this.words[i + s] = this.words[i];
++    for (var i = 0; i < s; i++)
++      this.words[i] = 0;
++    this.length += s;
+   }
+ 
+-  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
+-    return expected.test(actual);
+-  } else if (actual instanceof expected) {
+-    return true;
+-  } else if (expected.call({}, actual) === true) {
+-    return true;
+-  }
++  return this.strip();
++};
+ 
+-  return false;
+-}
++// Shift-right in-place
++// NOTE: `hint` is a lowest bit before trailing zeroes
++// NOTE: if `extended` is present - it will be filled with destroyed bits
++BN.prototype.ishrn = function ishrn(bits, hint, extended) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var h;
++  if (hint)
++    h = (hint - (hint % 26)) / 26;
++  else
++    h = 0;
+ 
+-function _throws(shouldThrow, block, expected, message) {
+-  var actual;
++  var r = bits % 26;
++  var s = Math.min((bits - r) / 26, this.length);
++  var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
++  var maskedWords = extended;
+ 
+-  if (util.isString(expected)) {
+-    message = expected;
+-    expected = null;
+-  }
++  h -= s;
++  h = Math.max(0, h);
+ 
+-  try {
+-    block();
+-  } catch (e) {
+-    actual = e;
++  // Extended mode, copy masked part
++  if (maskedWords) {
++    for (var i = 0; i < s; i++)
++      maskedWords.words[i] = this.words[i];
++    maskedWords.length = s;
+   }
+ 
+-  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
+-            (message ? ' ' + message : '.');
+-
+-  if (shouldThrow && !actual) {
+-    fail(actual, expected, 'Missing expected exception' + message);
++  if (s === 0) {
++    // No-op, we should not move anything at all
++  } else if (this.length > s) {
++    this.length -= s;
++    for (var i = 0; i < this.length; i++)
++      this.words[i] = this.words[i + s];
++  } else {
++    this.words[0] = 0;
++    this.length = 1;
+   }
+ 
+-  if (!shouldThrow && expectedException(actual, expected)) {
+-    fail(actual, expected, 'Got unwanted exception' + message);
++  var carry = 0;
++  for (var i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
++    var word = this.words[i];
++    this.words[i] = (carry << (26 - r)) | (word >>> r);
++    carry = word & mask;
+   }
+ 
+-  if ((shouldThrow && actual && expected &&
+-      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
+-    throw actual;
++  // Push carried bits as a mask
++  if (maskedWords && carry !== 0)
++    maskedWords.words[maskedWords.length++] = carry;
++
++  if (this.length === 0) {
++    this.words[0] = 0;
++    this.length = 1;
+   }
+-}
+ 
+-// 11. Expected to throw an error:
+-// assert.throws(block, Error_opt, message_opt);
++  this.strip();
+ 
+-assert.throws = function(block, /*optional*/error, /*optional*/message) {
+-  _throws.apply(this, [true].concat(pSlice.call(arguments)));
++  return this;
+ };
+ 
+-// EXTENSION! This is annoying to write outside this module.
+-assert.doesNotThrow = function(block, /*optional*/message) {
+-  _throws.apply(this, [false].concat(pSlice.call(arguments)));
++// Shift-left
++BN.prototype.shln = function shln(bits) {
++  return this.clone().ishln(bits);
+ };
+ 
+-assert.ifError = function(err) { if (err) {throw err;}};
+-
+-var objectKeys = Object.keys || function (obj) {
+-  var keys = [];
+-  for (var key in obj) {
+-    if (hasOwn.call(obj, key)) keys.push(key);
+-  }
+-  return keys;
++// Shift-right
++BN.prototype.shrn = function shrn(bits) {
++  return this.clone().ishrn(bits);
+ };
+ 
+-},{"util/":62}],53:[function(require,module,exports){
+-(function (global){
+-/*!
+- * The buffer module from node.js, for the browser.
+- *
+- * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+- * @license  MIT
+- */
+-/* eslint-disable no-proto */
++// Test if n bit is set
++BN.prototype.testn = function testn(bit) {
++  assert(typeof bit === 'number' && bit >= 0);
++  var r = bit % 26;
++  var s = (bit - r) / 26;
++  var q = 1 << r;
+ 
+-'use strict'
++  // Fast case: bit is much higher than all existing words
++  if (this.length <= s) {
++    return false;
++  }
+ 
+-var base64 = require('base64-js')
+-var ieee754 = require('ieee754')
+-var isArray = require('isarray')
++  // Check bit and return
++  var w = this.words[s];
+ 
+-exports.Buffer = Buffer
+-exports.SlowBuffer = SlowBuffer
+-exports.INSPECT_MAX_BYTES = 50
+-Buffer.poolSize = 8192 // not used by this implementation
++  return !!(w & q);
++};
+ 
+-var rootParent = {}
++// Return only lowers bits of number (in-place)
++BN.prototype.imaskn = function imaskn(bits) {
++  assert(typeof bits === 'number' && bits >= 0);
++  var r = bits % 26;
++  var s = (bits - r) / 26;
+ 
+-/**
+- * If `Buffer.TYPED_ARRAY_SUPPORT`:
+- *   === true    Use Uint8Array implementation (fastest)
+- *   === false   Use Object implementation (most compatible, even IE6)
+- *
+- * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+- * Opera 11.6+, iOS 4.2+.
+- *
+- * Due to various browser bugs, sometimes the Object implementation will be used even
+- * when the browser supports typed arrays.
+- *
+- * Note:
+- *
+- *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
+- *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
+- *
+- *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
+- *
+- *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
+- *     incorrect length in some situations.
++  assert(!this.sign, 'imaskn works only with positive numbers');
+ 
+- * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
+- * get the Object implementation, which is slower but behaves correctly.
+- */
+-Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
+-  ? global.TYPED_ARRAY_SUPPORT
+-  : typedArraySupport()
++  if (r !== 0)
++    s++;
++  this.length = Math.min(s, this.length);
+ 
+-function typedArraySupport () {
+-  try {
+-    var arr = new Uint8Array(1)
+-    arr.foo = function () { return 42 }
+-    return arr.foo() === 42 && // typed array instances can be augmented
+-        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
+-        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
+-  } catch (e) {
+-    return false
++  if (r !== 0) {
++    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
++    this.words[this.length - 1] &= mask;
+   }
+-}
+ 
+-function kMaxLength () {
+-  return Buffer.TYPED_ARRAY_SUPPORT
+-    ? 0x7fffffff
+-    : 0x3fffffff
+-}
++  return this.strip();
++};
+ 
+-/**
+- * The Buffer constructor returns instances of `Uint8Array` that have their
+- * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
+- * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
+- * and the `Uint8Array` methods. Square bracket notation works as expected -- it
+- * returns a single octet.
+- *
+- * The `Uint8Array` prototype remains unmodified.
+- */
+-function Buffer (arg) {
+-  if (!(this instanceof Buffer)) {
+-    // Avoid going through an ArgumentsAdaptorTrampoline in the common case.
+-    if (arguments.length > 1) return new Buffer(arg, arguments[1])
+-    return new Buffer(arg)
+-  }
++// Return only lowers bits of number
++BN.prototype.maskn = function maskn(bits) {
++  return this.clone().imaskn(bits);
++};
+ 
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+-    this.length = 0
+-    this.parent = undefined
+-  }
++// Add plain number `num` to `this`
++BN.prototype.iaddn = function iaddn(num) {
++  assert(typeof num === 'number');
++  if (num < 0)
++    return this.isubn(-num);
+ 
+-  // Common case.
+-  if (typeof arg === 'number') {
+-    return fromNumber(this, arg)
+-  }
++  // Possible sign change
++  if (this.sign) {
++    if (this.length === 1 && this.words[0] < num) {
++      this.words[0] = num - this.words[0];
++      this.sign = false;
++      return this;
++    }
+ 
+-  // Slightly less common case.
+-  if (typeof arg === 'string') {
+-    return fromString(this, arg, arguments.length > 1 ? arguments[1] : 'utf8')
++    this.sign = false;
++    this.isubn(num);
++    this.sign = true;
++    return this;
+   }
+ 
+-  // Unusual.
+-  return fromObject(this, arg)
+-}
++  // Add without checks
++  return this._iaddn(num);
++};
+ 
+-// TODO: Legacy, not needed anymore. Remove in next major version.
+-Buffer._augment = function (arr) {
+-  arr.__proto__ = Buffer.prototype
+-  return arr
+-}
++BN.prototype._iaddn = function _iaddn(num) {
++  this.words[0] += num;
+ 
+-function fromNumber (that, length) {
+-  that = allocate(that, length < 0 ? 0 : checked(length) | 0)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+-    for (var i = 0; i < length; i++) {
+-      that[i] = 0
+-    }
++  // Carry
++  for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
++    this.words[i] -= 0x4000000;
++    if (i === this.length - 1)
++      this.words[i + 1] = 1;
++    else
++      this.words[i + 1]++;
+   }
+-  return that
+-}
+-
+-function fromString (that, string, encoding) {
+-  if (typeof encoding !== 'string' || encoding === '') encoding = 'utf8'
+-
+-  // Assumption: byteLength() return value is always < kMaxLength.
+-  var length = byteLength(string, encoding) | 0
+-  that = allocate(that, length)
+-
+-  that.write(string, encoding)
+-  return that
+-}
++  this.length = Math.max(this.length, i + 1);
+ 
+-function fromObject (that, object) {
+-  if (Buffer.isBuffer(object)) return fromBuffer(that, object)
++  return this;
++};
+ 
+-  if (isArray(object)) return fromArray(that, object)
++// Subtract plain number `num` from `this`
++BN.prototype.isubn = function isubn(num) {
++  assert(typeof num === 'number');
++  if (num < 0)
++    return this.iaddn(-num);
+ 
+-  if (object == null) {
+-    throw new TypeError('must start with number, buffer, array or string')
++  if (this.sign) {
++    this.sign = false;
++    this.iaddn(num);
++    this.sign = true;
++    return this;
+   }
+ 
+-  if (typeof ArrayBuffer !== 'undefined') {
+-    if (object.buffer instanceof ArrayBuffer) {
+-      return fromTypedArray(that, object)
+-    }
+-    if (object instanceof ArrayBuffer) {
+-      return fromArrayBuffer(that, object)
+-    }
++  this.words[0] -= num;
++
++  // Carry
++  for (var i = 0; i < this.length && this.words[i] < 0; i++) {
++    this.words[i] += 0x4000000;
++    this.words[i + 1] -= 1;
+   }
+ 
+-  if (object.length) return fromArrayLike(that, object)
++  return this.strip();
++};
+ 
+-  return fromJsonObject(that, object)
+-}
++BN.prototype.addn = function addn(num) {
++  return this.clone().iaddn(num);
++};
+ 
+-function fromBuffer (that, buffer) {
+-  var length = checked(buffer.length) | 0
+-  that = allocate(that, length)
+-  buffer.copy(that, 0, 0, length)
+-  return that
+-}
++BN.prototype.subn = function subn(num) {
++  return this.clone().isubn(num);
++};
+ 
+-function fromArray (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
+-  }
+-  return that
+-}
++BN.prototype.iabs = function iabs() {
++  this.sign = false;
+ 
+-// Duplicate of fromArray() to keep fromArray() monomorphic.
+-function fromTypedArray (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  // Truncating the elements is probably not what people expect from typed
+-  // arrays with BYTES_PER_ELEMENT > 1 but it's compatible with the behavior
+-  // of the old Buffer constructor.
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
+-  }
+-  return that
+-}
++  return this;
++};
+ 
+-function fromArrayBuffer (that, array) {
+-  array.byteLength // this throws if `array` is not a valid ArrayBuffer
++BN.prototype.abs = function abs() {
++  return this.clone().iabs();
++};
+ 
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    // Return an augmented `Uint8Array` instance, for best performance
+-    that = new Uint8Array(array)
+-    that.__proto__ = Buffer.prototype
++BN.prototype._ishlnsubmul = function _ishlnsubmul(num, mul, shift) {
++  // Bigger storage is needed
++  var len = num.length + shift;
++  var i;
++  if (this.words.length < len) {
++    var t = new Array(len);
++    for (var i = 0; i < this.length; i++)
++      t[i] = this.words[i];
++    this.words = t;
+   } else {
+-    // Fallback: Return an object instance of the Buffer class
+-    that = fromTypedArray(that, new Uint8Array(array))
++    i = this.length;
+   }
+-  return that
+-}
+ 
+-function fromArrayLike (that, array) {
+-  var length = checked(array.length) | 0
+-  that = allocate(that, length)
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
++  // Zeroify rest
++  this.length = Math.max(this.length, len);
++  for (; i < this.length; i++)
++    this.words[i] = 0;
++
++  var carry = 0;
++  for (var i = 0; i < num.length; i++) {
++    var w = this.words[i + shift] + carry;
++    var right = num.words[i] * mul;
++    w -= right & 0x3ffffff;
++    carry = (w >> 26) - ((right / 0x4000000) | 0);
++    this.words[i + shift] = w & 0x3ffffff;
++  }
++  for (; i < this.length - shift; i++) {
++    var w = this.words[i + shift] + carry;
++    carry = w >> 26;
++    this.words[i + shift] = w & 0x3ffffff;
+   }
+-  return that
+-}
+ 
+-// Deserialize { type: 'Buffer', data: [1,2,3,...] } into a Buffer object.
+-// Returns a zero-length buffer for inputs that don't conform to the spec.
+-function fromJsonObject (that, object) {
+-  var array
+-  var length = 0
++  if (carry === 0)
++    return this.strip();
+ 
+-  if (object.type === 'Buffer' && isArray(object.data)) {
+-    array = object.data
+-    length = checked(array.length) | 0
++  // Subtraction overflow
++  assert(carry === -1);
++  carry = 0;
++  for (var i = 0; i < this.length; i++) {
++    var w = -this.words[i] + carry;
++    carry = w >> 26;
++    this.words[i] = w & 0x3ffffff;
+   }
+-  that = allocate(that, length)
++  this.sign = true;
+ 
+-  for (var i = 0; i < length; i += 1) {
+-    that[i] = array[i] & 255
+-  }
+-  return that
+-}
++  return this.strip();
++};
+ 
+-if (Buffer.TYPED_ARRAY_SUPPORT) {
+-  Buffer.prototype.__proto__ = Uint8Array.prototype
+-  Buffer.__proto__ = Uint8Array
+-  if (typeof Symbol !== 'undefined' && Symbol.species &&
+-      Buffer[Symbol.species] === Buffer) {
+-    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
+-    Object.defineProperty(Buffer, Symbol.species, {
+-      value: null,
+-      configurable: true
+-    })
+-  }
+-} else {
+-  // pre-set for values that may exist in the future
+-  Buffer.prototype.length = undefined
+-  Buffer.prototype.parent = undefined
+-}
++BN.prototype._wordDiv = function _wordDiv(num, mode) {
++  var shift = this.length - num.length;
+ 
+-function allocate (that, length) {
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    // Return an augmented `Uint8Array` instance, for best performance
+-    that = new Uint8Array(length)
+-    that.__proto__ = Buffer.prototype
+-  } else {
+-    // Fallback: Return an object instance of the Buffer class
+-    that.length = length
++  var a = this.clone();
++  var b = num;
++
++  // Normalize
++  var bhi = b.words[b.length - 1];
++  var bhiBits = this._countBits(bhi);
++  shift = 26 - bhiBits;
++  if (shift !== 0) {
++    b = b.shln(shift);
++    a.ishln(shift);
++    bhi = b.words[b.length - 1];
+   }
+ 
+-  var fromPool = length !== 0 && length <= Buffer.poolSize >>> 1
+-  if (fromPool) that.parent = rootParent
++  // Initialize quotient
++  var m = a.length - b.length;
++  var q;
+ 
+-  return that
+-}
++  if (mode !== 'mod') {
++    q = new BN(null);
++    q.length = m + 1;
++    q.words = new Array(q.length);
++    for (var i = 0; i < q.length; i++)
++      q.words[i] = 0;
++  }
+ 
+-function checked (length) {
+-  // Note: cannot use `length < kMaxLength` here because that fails when
+-  // length is NaN (which is otherwise coerced to zero.)
+-  if (length >= kMaxLength()) {
+-    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+-                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
++  var diff = a.clone()._ishlnsubmul(b, 1, m);
++  if (!diff.sign) {
++    a = diff;
++    if (q)
++      q.words[m] = 1;
+   }
+-  return length | 0
+-}
+ 
+-function SlowBuffer (subject, encoding) {
+-  if (!(this instanceof SlowBuffer)) return new SlowBuffer(subject, encoding)
++  for (var j = m - 1; j >= 0; j--) {
++    var qj = a.words[b.length + j] * 0x4000000 + a.words[b.length + j - 1];
+ 
+-  var buf = new Buffer(subject, encoding)
+-  delete buf.parent
+-  return buf
+-}
++    // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
++    // (0x7ffffff)
++    qj = Math.min((qj / bhi) | 0, 0x3ffffff);
+ 
+-Buffer.isBuffer = function isBuffer (b) {
+-  return !!(b != null && b._isBuffer)
+-}
+-
+-Buffer.compare = function compare (a, b) {
+-  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
+-    throw new TypeError('Arguments must be Buffers')
+-  }
+-
+-  if (a === b) return 0
+-
+-  var x = a.length
+-  var y = b.length
+-
+-  var i = 0
+-  var len = Math.min(x, y)
+-  while (i < len) {
+-    if (a[i] !== b[i]) break
+-
+-    ++i
++    a._ishlnsubmul(b, qj, j);
++    while (a.sign) {
++      qj--;
++      a.sign = false;
++      a._ishlnsubmul(b, 1, j);
++      if (a.cmpn(0) !== 0)
++        a.sign = !a.sign;
++    }
++    if (q)
++      q.words[j] = qj;
+   }
++  if (q)
++    q.strip();
++  a.strip();
+ 
+-  if (i !== len) {
+-    x = a[i]
+-    y = b[i]
+-  }
++  // Denormalize
++  if (mode !== 'div' && shift !== 0)
++    a.ishrn(shift);
++  return { div: q ? q : null, mod: a };
++};
+ 
+-  if (x < y) return -1
+-  if (y < x) return 1
+-  return 0
+-}
++BN.prototype.divmod = function divmod(num, mode) {
++  assert(num.cmpn(0) !== 0);
+ 
+-Buffer.isEncoding = function isEncoding (encoding) {
+-  switch (String(encoding).toLowerCase()) {
+-    case 'hex':
+-    case 'utf8':
+-    case 'utf-8':
+-    case 'ascii':
+-    case 'binary':
+-    case 'base64':
+-    case 'raw':
+-    case 'ucs2':
+-    case 'ucs-2':
+-    case 'utf16le':
+-    case 'utf-16le':
+-      return true
+-    default:
+-      return false
++  if (this.sign && !num.sign) {
++    var res = this.neg().divmod(num, mode);
++    var div;
++    var mod;
++    if (mode !== 'mod')
++      div = res.div.neg();
++    if (mode !== 'div')
++      mod = res.mod.cmpn(0) === 0 ? res.mod : num.sub(res.mod);
++    return {
++      div: div,
++      mod: mod
++    };
++  } else if (!this.sign && num.sign) {
++    var res = this.divmod(num.neg(), mode);
++    var div;
++    if (mode !== 'mod')
++      div = res.div.neg();
++    return { div: div, mod: res.mod };
++  } else if (this.sign && num.sign) {
++    return this.neg().divmod(num.neg(), mode);
+   }
+-}
+ 
+-Buffer.concat = function concat (list, length) {
+-  if (!isArray(list)) throw new TypeError('list argument must be an Array of Buffers.')
++  // Both numbers are positive at this point
+ 
+-  if (list.length === 0) {
+-    return new Buffer(0)
+-  }
++  // Strip both numbers to approximate shift value
++  if (num.length > this.length || this.cmp(num) < 0)
++    return { div: new BN(0), mod: this };
+ 
+-  var i
+-  if (length === undefined) {
+-    length = 0
+-    for (i = 0; i < list.length; i++) {
+-      length += list[i].length
+-    }
++  // Very short reduction
++  if (num.length === 1) {
++    if (mode === 'div')
++      return { div: this.divn(num.words[0]), mod: null };
++    else if (mode === 'mod')
++      return { div: null, mod: new BN(this.modn(num.words[0])) };
++    return {
++      div: this.divn(num.words[0]),
++      mod: new BN(this.modn(num.words[0]))
++    };
+   }
+ 
+-  var buf = new Buffer(length)
+-  var pos = 0
+-  for (i = 0; i < list.length; i++) {
+-    var item = list[i]
+-    item.copy(buf, pos)
+-    pos += item.length
+-  }
+-  return buf
+-}
++  return this._wordDiv(num, mode);
++};
+ 
+-function byteLength (string, encoding) {
+-  if (typeof string !== 'string') string = '' + string
++// Find `this` / `num`
++BN.prototype.div = function div(num) {
++  return this.divmod(num, 'div').div;
++};
+ 
+-  var len = string.length
+-  if (len === 0) return 0
++// Find `this` % `num`
++BN.prototype.mod = function mod(num) {
++  return this.divmod(num, 'mod').mod;
++};
+ 
+-  // Use a for loop to avoid recursion
+-  var loweredCase = false
+-  for (;;) {
+-    switch (encoding) {
+-      case 'ascii':
+-      case 'binary':
+-      // Deprecated
+-      case 'raw':
+-      case 'raws':
+-        return len
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8ToBytes(string).length
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return len * 2
+-      case 'hex':
+-        return len >>> 1
+-      case 'base64':
+-        return base64ToBytes(string).length
+-      default:
+-        if (loweredCase) return utf8ToBytes(string).length // assume utf8
+-        encoding = ('' + encoding).toLowerCase()
+-        loweredCase = true
+-    }
+-  }
+-}
+-Buffer.byteLength = byteLength
++// Find Round(`this` / `num`)
++BN.prototype.divRound = function divRound(num) {
++  var dm = this.divmod(num);
+ 
+-function slowToString (encoding, start, end) {
+-  var loweredCase = false
++  // Fast case - exact division
++  if (dm.mod.cmpn(0) === 0)
++    return dm.div;
+ 
+-  start = start | 0
+-  end = end === undefined || end === Infinity ? this.length : end | 0
++  var mod = dm.div.sign ? dm.mod.isub(num) : dm.mod;
+ 
+-  if (!encoding) encoding = 'utf8'
+-  if (start < 0) start = 0
+-  if (end > this.length) end = this.length
+-  if (end <= start) return ''
++  var half = num.shrn(1);
++  var r2 = num.andln(1);
++  var cmp = mod.cmp(half);
+ 
+-  while (true) {
+-    switch (encoding) {
+-      case 'hex':
+-        return hexSlice(this, start, end)
++  // Round down
++  if (cmp < 0 || r2 === 1 && cmp === 0)
++    return dm.div;
+ 
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8Slice(this, start, end)
++  // Round up
++  return dm.div.sign ? dm.div.isubn(1) : dm.div.iaddn(1);
++};
+ 
+-      case 'ascii':
+-        return asciiSlice(this, start, end)
++BN.prototype.modn = function modn(num) {
++  assert(num <= 0x3ffffff);
++  var p = (1 << 26) % num;
+ 
+-      case 'binary':
+-        return binarySlice(this, start, end)
++  var acc = 0;
++  for (var i = this.length - 1; i >= 0; i--)
++    acc = (p * acc + this.words[i]) % num;
+ 
+-      case 'base64':
+-        return base64Slice(this, start, end)
++  return acc;
++};
+ 
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return utf16leSlice(this, start, end)
++// In-place division by number
++BN.prototype.idivn = function idivn(num) {
++  assert(num <= 0x3ffffff);
+ 
+-      default:
+-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+-        encoding = (encoding + '').toLowerCase()
+-        loweredCase = true
+-    }
++  var carry = 0;
++  for (var i = this.length - 1; i >= 0; i--) {
++    var w = this.words[i] + carry * 0x4000000;
++    this.words[i] = (w / num) | 0;
++    carry = w % num;
+   }
+-}
+ 
+-// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
+-// Buffer instances.
+-Buffer.prototype._isBuffer = true
++  return this.strip();
++};
+ 
+-Buffer.prototype.toString = function toString () {
+-  var length = this.length | 0
+-  if (length === 0) return ''
+-  if (arguments.length === 0) return utf8Slice(this, 0, length)
+-  return slowToString.apply(this, arguments)
+-}
++BN.prototype.divn = function divn(num) {
++  return this.clone().idivn(num);
++};
+ 
+-Buffer.prototype.equals = function equals (b) {
+-  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+-  if (this === b) return true
+-  return Buffer.compare(this, b) === 0
+-}
++BN.prototype.egcd = function egcd(p) {
++  assert(!p.sign);
++  assert(p.cmpn(0) !== 0);
+ 
+-Buffer.prototype.inspect = function inspect () {
+-  var str = ''
+-  var max = exports.INSPECT_MAX_BYTES
+-  if (this.length > 0) {
+-    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
+-    if (this.length > max) str += ' ... '
+-  }
+-  return '<Buffer ' + str + '>'
+-}
++  var x = this;
++  var y = p.clone();
+ 
+-Buffer.prototype.compare = function compare (b) {
+-  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+-  if (this === b) return 0
+-  return Buffer.compare(this, b)
+-}
++  if (x.sign)
++    x = x.mod(p);
++  else
++    x = x.clone();
+ 
+-Buffer.prototype.indexOf = function indexOf (val, byteOffset) {
+-  if (byteOffset > 0x7fffffff) byteOffset = 0x7fffffff
+-  else if (byteOffset < -0x80000000) byteOffset = -0x80000000
+-  byteOffset >>= 0
++  // A * x + B * y = x
++  var A = new BN(1);
++  var B = new BN(0);
+ 
+-  if (this.length === 0) return -1
+-  if (byteOffset >= this.length) return -1
++  // C * x + D * y = y
++  var C = new BN(0);
++  var D = new BN(1);
+ 
+-  // Negative offsets start from the end of the buffer
+-  if (byteOffset < 0) byteOffset = Math.max(this.length + byteOffset, 0)
++  var g = 0;
+ 
+-  if (typeof val === 'string') {
+-    if (val.length === 0) return -1 // special case: looking for empty string always fails
+-    return String.prototype.indexOf.call(this, val, byteOffset)
+-  }
+-  if (Buffer.isBuffer(val)) {
+-    return arrayIndexOf(this, val, byteOffset)
+-  }
+-  if (typeof val === 'number') {
+-    if (Buffer.TYPED_ARRAY_SUPPORT && Uint8Array.prototype.indexOf === 'function') {
+-      return Uint8Array.prototype.indexOf.call(this, val, byteOffset)
+-    }
+-    return arrayIndexOf(this, [ val ], byteOffset)
++  while (x.isEven() && y.isEven()) {
++    x.ishrn(1);
++    y.ishrn(1);
++    ++g;
+   }
+ 
+-  function arrayIndexOf (arr, val, byteOffset) {
+-    var foundIndex = -1
+-    for (var i = 0; byteOffset + i < arr.length; i++) {
+-      if (arr[byteOffset + i] === val[foundIndex === -1 ? 0 : i - foundIndex]) {
+-        if (foundIndex === -1) foundIndex = i
+-        if (i - foundIndex + 1 === val.length) return byteOffset + foundIndex
++  var yp = y.clone();
++  var xp = x.clone();
++
++  while (x.cmpn(0) !== 0) {
++    while (x.isEven()) {
++      x.ishrn(1);
++      if (A.isEven() && B.isEven()) {
++        A.ishrn(1);
++        B.ishrn(1);
+       } else {
+-        foundIndex = -1
++        A.iadd(yp).ishrn(1);
++        B.isub(xp).ishrn(1);
+       }
+     }
+-    return -1
+-  }
+ 
+-  throw new TypeError('val must be string, number or Buffer')
+-}
++    while (y.isEven()) {
++      y.ishrn(1);
++      if (C.isEven() && D.isEven()) {
++        C.ishrn(1);
++        D.ishrn(1);
++      } else {
++        C.iadd(yp).ishrn(1);
++        D.isub(xp).ishrn(1);
++      }
++    }
+ 
+-function hexWrite (buf, string, offset, length) {
+-  offset = Number(offset) || 0
+-  var remaining = buf.length - offset
+-  if (!length) {
+-    length = remaining
+-  } else {
+-    length = Number(length)
+-    if (length > remaining) {
+-      length = remaining
++    if (x.cmp(y) >= 0) {
++      x.isub(y);
++      A.isub(C);
++      B.isub(D);
++    } else {
++      y.isub(x);
++      C.isub(A);
++      D.isub(B);
+     }
+   }
+ 
+-  // must be an even number of digits
+-  var strLen = string.length
+-  if (strLen % 2 !== 0) throw new Error('Invalid hex string')
+-
+-  if (length > strLen / 2) {
+-    length = strLen / 2
+-  }
+-  for (var i = 0; i < length; i++) {
+-    var parsed = parseInt(string.substr(i * 2, 2), 16)
+-    if (isNaN(parsed)) throw new Error('Invalid hex string')
+-    buf[offset + i] = parsed
+-  }
+-  return i
+-}
++  return {
++    a: C,
++    b: D,
++    gcd: y.ishln(g)
++  };
++};
+ 
+-function utf8Write (buf, string, offset, length) {
+-  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+-}
++// This is reduced incarnation of the binary EEA
++// above, designated to invert members of the
++// _prime_ fields F(p) at a maximal speed
++BN.prototype._invmp = function _invmp(p) {
++  assert(!p.sign);
++  assert(p.cmpn(0) !== 0);
+ 
+-function asciiWrite (buf, string, offset, length) {
+-  return blitBuffer(asciiToBytes(string), buf, offset, length)
+-}
++  var a = this;
++  var b = p.clone();
+ 
+-function binaryWrite (buf, string, offset, length) {
+-  return asciiWrite(buf, string, offset, length)
+-}
++  if (a.sign)
++    a = a.mod(p);
++  else
++    a = a.clone();
+ 
+-function base64Write (buf, string, offset, length) {
+-  return blitBuffer(base64ToBytes(string), buf, offset, length)
+-}
++  var x1 = new BN(1);
++  var x2 = new BN(0);
+ 
+-function ucs2Write (buf, string, offset, length) {
+-  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+-}
++  var delta = b.clone();
+ 
+-Buffer.prototype.write = function write (string, offset, length, encoding) {
+-  // Buffer#write(string)
+-  if (offset === undefined) {
+-    encoding = 'utf8'
+-    length = this.length
+-    offset = 0
+-  // Buffer#write(string, encoding)
+-  } else if (length === undefined && typeof offset === 'string') {
+-    encoding = offset
+-    length = this.length
+-    offset = 0
+-  // Buffer#write(string, offset[, length][, encoding])
+-  } else if (isFinite(offset)) {
+-    offset = offset | 0
+-    if (isFinite(length)) {
+-      length = length | 0
+-      if (encoding === undefined) encoding = 'utf8'
++  while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
++    while (a.isEven()) {
++      a.ishrn(1);
++      if (x1.isEven())
++        x1.ishrn(1);
++      else
++        x1.iadd(delta).ishrn(1);
++    }
++    while (b.isEven()) {
++      b.ishrn(1);
++      if (x2.isEven())
++        x2.ishrn(1);
++      else
++        x2.iadd(delta).ishrn(1);
++    }
++    if (a.cmp(b) >= 0) {
++      a.isub(b);
++      x1.isub(x2);
+     } else {
+-      encoding = length
+-      length = undefined
++      b.isub(a);
++      x2.isub(x1);
+     }
+-  // legacy write(string, encoding, offset, length) - remove in v0.13
+-  } else {
+-    var swap = encoding
+-    encoding = offset
+-    offset = length | 0
+-    length = swap
+   }
++  if (a.cmpn(1) === 0)
++    return x1;
++  else
++    return x2;
++};
+ 
+-  var remaining = this.length - offset
+-  if (length === undefined || length > remaining) length = remaining
++BN.prototype.gcd = function gcd(num) {
++  if (this.cmpn(0) === 0)
++    return num.clone();
++  if (num.cmpn(0) === 0)
++    return this.clone();
+ 
+-  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
+-    throw new RangeError('attempt to write outside buffer bounds')
++  var a = this.clone();
++  var b = num.clone();
++  a.sign = false;
++  b.sign = false;
++
++  // Remove common factor of two
++  for (var shift = 0; a.isEven() && b.isEven(); shift++) {
++    a.ishrn(1);
++    b.ishrn(1);
+   }
+ 
+-  if (!encoding) encoding = 'utf8'
++  do {
++    while (a.isEven())
++      a.ishrn(1);
++    while (b.isEven())
++      b.ishrn(1);
+ 
+-  var loweredCase = false
+-  for (;;) {
+-    switch (encoding) {
+-      case 'hex':
+-        return hexWrite(this, string, offset, length)
++    var r = a.cmp(b);
++    if (r < 0) {
++      // Swap `a` and `b` to make `a` always bigger than `b`
++      var t = a;
++      a = b;
++      b = t;
++    } else if (r === 0 || b.cmpn(1) === 0) {
++      break;
++    }
+ 
+-      case 'utf8':
+-      case 'utf-8':
+-        return utf8Write(this, string, offset, length)
++    a.isub(b);
++  } while (true);
+ 
+-      case 'ascii':
+-        return asciiWrite(this, string, offset, length)
++  return b.ishln(shift);
++};
+ 
+-      case 'binary':
+-        return binaryWrite(this, string, offset, length)
++// Invert number in the field F(num)
++BN.prototype.invm = function invm(num) {
++  return this.egcd(num).a.mod(num);
++};
+ 
+-      case 'base64':
+-        // Warning: maxLength not taken into account in base64Write
+-        return base64Write(this, string, offset, length)
++BN.prototype.isEven = function isEven() {
++  return (this.words[0] & 1) === 0;
++};
+ 
+-      case 'ucs2':
+-      case 'ucs-2':
+-      case 'utf16le':
+-      case 'utf-16le':
+-        return ucs2Write(this, string, offset, length)
++BN.prototype.isOdd = function isOdd() {
++  return (this.words[0] & 1) === 1;
++};
+ 
+-      default:
+-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+-        encoding = ('' + encoding).toLowerCase()
+-        loweredCase = true
+-    }
+-  }
+-}
++// And first word and num
++BN.prototype.andln = function andln(num) {
++  return this.words[0] & num;
++};
+ 
+-Buffer.prototype.toJSON = function toJSON () {
+-  return {
+-    type: 'Buffer',
+-    data: Array.prototype.slice.call(this._arr || this, 0)
+-  }
+-}
++// Increment at the bit position in-line
++BN.prototype.bincn = function bincn(bit) {
++  assert(typeof bit === 'number');
++  var r = bit % 26;
++  var s = (bit - r) / 26;
++  var q = 1 << r;
+ 
+-function base64Slice (buf, start, end) {
+-  if (start === 0 && end === buf.length) {
+-    return base64.fromByteArray(buf)
+-  } else {
+-    return base64.fromByteArray(buf.slice(start, end))
++  // Fast case: bit is much higher than all existing words
++  if (this.length <= s) {
++    for (var i = this.length; i < s + 1; i++)
++      this.words[i] = 0;
++    this.words[s] |= q;
++    this.length = s + 1;
++    return this;
+   }
+-}
+-
+-function utf8Slice (buf, start, end) {
+-  end = Math.min(buf.length, end)
+-  var res = []
+-
+-  var i = start
+-  while (i < end) {
+-    var firstByte = buf[i]
+-    var codePoint = null
+-    var bytesPerSequence = (firstByte > 0xEF) ? 4
+-      : (firstByte > 0xDF) ? 3
+-      : (firstByte > 0xBF) ? 2
+-      : 1
+ 
+-    if (i + bytesPerSequence <= end) {
+-      var secondByte, thirdByte, fourthByte, tempCodePoint
++  // Add bit and propagate, if needed
++  var carry = q;
++  for (var i = s; carry !== 0 && i < this.length; i++) {
++    var w = this.words[i];
++    w += carry;
++    carry = w >>> 26;
++    w &= 0x3ffffff;
++    this.words[i] = w;
++  }
++  if (carry !== 0) {
++    this.words[i] = carry;
++    this.length++;
++  }
++  return this;
++};
+ 
+-      switch (bytesPerSequence) {
+-        case 1:
+-          if (firstByte < 0x80) {
+-            codePoint = firstByte
+-          }
+-          break
+-        case 2:
+-          secondByte = buf[i + 1]
+-          if ((secondByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
+-            if (tempCodePoint > 0x7F) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-          break
+-        case 3:
+-          secondByte = buf[i + 1]
+-          thirdByte = buf[i + 2]
+-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
+-            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-          break
+-        case 4:
+-          secondByte = buf[i + 1]
+-          thirdByte = buf[i + 2]
+-          fourthByte = buf[i + 3]
+-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
+-            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
+-            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
+-              codePoint = tempCodePoint
+-            }
+-          }
+-      }
+-    }
++BN.prototype.cmpn = function cmpn(num) {
++  var sign = num < 0;
++  if (sign)
++    num = -num;
+ 
+-    if (codePoint === null) {
+-      // we did not generate a valid codePoint so insert a
+-      // replacement char (U+FFFD) and advance only 1 byte
+-      codePoint = 0xFFFD
+-      bytesPerSequence = 1
+-    } else if (codePoint > 0xFFFF) {
+-      // encode to utf16 (surrogate pair dance)
+-      codePoint -= 0x10000
+-      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
+-      codePoint = 0xDC00 | codePoint & 0x3FF
+-    }
++  if (this.sign && !sign)
++    return -1;
++  else if (!this.sign && sign)
++    return 1;
+ 
+-    res.push(codePoint)
+-    i += bytesPerSequence
++  num &= 0x3ffffff;
++  this.strip();
++
++  var res;
++  if (this.length > 1) {
++    res = 1;
++  } else {
++    var w = this.words[0];
++    res = w === num ? 0 : w < num ? -1 : 1;
+   }
++  if (this.sign)
++    res = -res;
++  return res;
++};
+ 
+-  return decodeCodePointsArray(res)
+-}
++// Compare two numbers and return:
++// 1 - if `this` > `num`
++// 0 - if `this` == `num`
++// -1 - if `this` < `num`
++BN.prototype.cmp = function cmp(num) {
++  if (this.sign && !num.sign)
++    return -1;
++  else if (!this.sign && num.sign)
++    return 1;
+ 
+-// Based on http://stackoverflow.com/a/22747272/680742, the browser with
+-// the lowest limit is Chrome, with 0x10000 args.
+-// We go 1 magnitude less, for safety
+-var MAX_ARGUMENTS_LENGTH = 0x1000
++  var res = this.ucmp(num);
++  if (this.sign)
++    return -res;
++  else
++    return res;
++};
+ 
+-function decodeCodePointsArray (codePoints) {
+-  var len = codePoints.length
+-  if (len <= MAX_ARGUMENTS_LENGTH) {
+-    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+-  }
++// Unsigned comparison
++BN.prototype.ucmp = function ucmp(num) {
++  // At this point both numbers have the same sign
++  if (this.length > num.length)
++    return 1;
++  else if (this.length < num.length)
++    return -1;
+ 
+-  // Decode in chunks to avoid "call stack size exceeded".
+-  var res = ''
+-  var i = 0
+-  while (i < len) {
+-    res += String.fromCharCode.apply(
+-      String,
+-      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
+-    )
++  var res = 0;
++  for (var i = this.length - 1; i >= 0; i--) {
++    var a = this.words[i];
++    var b = num.words[i];
++
++    if (a === b)
++      continue;
++    if (a < b)
++      res = -1;
++    else if (a > b)
++      res = 1;
++    break;
+   }
+-  return res
+-}
++  return res;
++};
+ 
+-function asciiSlice (buf, start, end) {
+-  var ret = ''
+-  end = Math.min(buf.length, end)
++//
++// A reduce context, could be using montgomery or something better, depending
++// on the `m` itself.
++//
++BN.red = function red(num) {
++  return new Red(num);
++};
+ 
+-  for (var i = start; i < end; i++) {
+-    ret += String.fromCharCode(buf[i] & 0x7F)
+-  }
+-  return ret
+-}
++BN.prototype.toRed = function toRed(ctx) {
++  assert(!this.red, 'Already a number in reduction context');
++  assert(!this.sign, 'red works only with positives');
++  return ctx.convertTo(this)._forceRed(ctx);
++};
+ 
+-function binarySlice (buf, start, end) {
+-  var ret = ''
+-  end = Math.min(buf.length, end)
++BN.prototype.fromRed = function fromRed() {
++  assert(this.red, 'fromRed works only with numbers in reduction context');
++  return this.red.convertFrom(this);
++};
+ 
+-  for (var i = start; i < end; i++) {
+-    ret += String.fromCharCode(buf[i])
+-  }
+-  return ret
+-}
++BN.prototype._forceRed = function _forceRed(ctx) {
++  this.red = ctx;
++  return this;
++};
+ 
+-function hexSlice (buf, start, end) {
+-  var len = buf.length
++BN.prototype.forceRed = function forceRed(ctx) {
++  assert(!this.red, 'Already a number in reduction context');
++  return this._forceRed(ctx);
++};
+ 
+-  if (!start || start < 0) start = 0
+-  if (!end || end < 0 || end > len) end = len
++BN.prototype.redAdd = function redAdd(num) {
++  assert(this.red, 'redAdd works only with red numbers');
++  return this.red.add(this, num);
++};
+ 
+-  var out = ''
+-  for (var i = start; i < end; i++) {
+-    out += toHex(buf[i])
+-  }
+-  return out
+-}
++BN.prototype.redIAdd = function redIAdd(num) {
++  assert(this.red, 'redIAdd works only with red numbers');
++  return this.red.iadd(this, num);
++};
+ 
+-function utf16leSlice (buf, start, end) {
+-  var bytes = buf.slice(start, end)
+-  var res = ''
+-  for (var i = 0; i < bytes.length; i += 2) {
+-    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
+-  }
+-  return res
+-}
++BN.prototype.redSub = function redSub(num) {
++  assert(this.red, 'redSub works only with red numbers');
++  return this.red.sub(this, num);
++};
+ 
+-Buffer.prototype.slice = function slice (start, end) {
+-  var len = this.length
+-  start = ~~start
+-  end = end === undefined ? len : ~~end
++BN.prototype.redISub = function redISub(num) {
++  assert(this.red, 'redISub works only with red numbers');
++  return this.red.isub(this, num);
++};
+ 
+-  if (start < 0) {
+-    start += len
+-    if (start < 0) start = 0
+-  } else if (start > len) {
+-    start = len
+-  }
++BN.prototype.redShl = function redShl(num) {
++  assert(this.red, 'redShl works only with red numbers');
++  return this.red.shl(this, num);
++};
+ 
+-  if (end < 0) {
+-    end += len
+-    if (end < 0) end = 0
+-  } else if (end > len) {
+-    end = len
+-  }
++BN.prototype.redMul = function redMul(num) {
++  assert(this.red, 'redMul works only with red numbers');
++  this.red._verify2(this, num);
++  return this.red.mul(this, num);
++};
+ 
+-  if (end < start) end = start
++BN.prototype.redIMul = function redIMul(num) {
++  assert(this.red, 'redMul works only with red numbers');
++  this.red._verify2(this, num);
++  return this.red.imul(this, num);
++};
+ 
+-  var newBuf
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    newBuf = this.subarray(start, end)
+-    newBuf.__proto__ = Buffer.prototype
+-  } else {
+-    var sliceLen = end - start
+-    newBuf = new Buffer(sliceLen, undefined)
+-    for (var i = 0; i < sliceLen; i++) {
+-      newBuf[i] = this[i + start]
+-    }
+-  }
++BN.prototype.redSqr = function redSqr() {
++  assert(this.red, 'redSqr works only with red numbers');
++  this.red._verify1(this);
++  return this.red.sqr(this);
++};
+ 
+-  if (newBuf.length) newBuf.parent = this.parent || this
++BN.prototype.redISqr = function redISqr() {
++  assert(this.red, 'redISqr works only with red numbers');
++  this.red._verify1(this);
++  return this.red.isqr(this);
++};
+ 
+-  return newBuf
+-}
++// Square root over p
++BN.prototype.redSqrt = function redSqrt() {
++  assert(this.red, 'redSqrt works only with red numbers');
++  this.red._verify1(this);
++  return this.red.sqrt(this);
++};
+ 
+-/*
+- * Need to make sure that buffer isn't trying to write out of bounds.
+- */
+-function checkOffset (offset, ext, length) {
+-  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+-  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+-}
++BN.prototype.redInvm = function redInvm() {
++  assert(this.red, 'redInvm works only with red numbers');
++  this.red._verify1(this);
++  return this.red.invm(this);
++};
+ 
+-Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
++// Return negative clone of `this` % `red modulo`
++BN.prototype.redNeg = function redNeg() {
++  assert(this.red, 'redNeg works only with red numbers');
++  this.red._verify1(this);
++  return this.red.neg(this);
++};
+ 
+-  var val = this[offset]
+-  var mul = 1
+-  var i = 0
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    val += this[offset + i] * mul
+-  }
++BN.prototype.redPow = function redPow(num) {
++  assert(this.red && !num.red, 'redPow(normalNum)');
++  this.red._verify1(this);
++  return this.red.pow(this, num);
++};
+ 
+-  return val
++// Prime numbers with efficient reduction
++var primes = {
++  k256: null,
++  p224: null,
++  p192: null,
++  p25519: null
++};
++
++// Pseudo-Mersenne prime
++function MPrime(name, p) {
++  // P = 2 ^ N - K
++  this.name = name;
++  this.p = new BN(p, 16);
++  this.n = this.p.bitLength();
++  this.k = new BN(1).ishln(this.n).isub(this.p);
++
++  this.tmp = this._tmp();
+ }
+ 
+-Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) {
+-    checkOffset(offset, byteLength, this.length)
+-  }
++MPrime.prototype._tmp = function _tmp() {
++  var tmp = new BN(null);
++  tmp.words = new Array(Math.ceil(this.n / 13));
++  return tmp;
++};
+ 
+-  var val = this[offset + --byteLength]
+-  var mul = 1
+-  while (byteLength > 0 && (mul *= 0x100)) {
+-    val += this[offset + --byteLength] * mul
+-  }
++MPrime.prototype.ireduce = function ireduce(num) {
++  // Assumes that `num` is less than `P^2`
++  // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
++  var r = num;
++  var rlen;
+ 
+-  return val
+-}
++  do {
++    this.split(r, this.tmp);
++    r = this.imulK(r);
++    r = r.iadd(this.tmp);
++    rlen = r.bitLength();
++  } while (rlen > this.n);
+ 
+-Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 1, this.length)
+-  return this[offset]
+-}
++  var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
++  if (cmp === 0) {
++    r.words[0] = 0;
++    r.length = 1;
++  } else if (cmp > 0) {
++    r.isub(this.p);
++  } else {
++    r.strip();
++  }
+ 
+-Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  return this[offset] | (this[offset + 1] << 8)
+-}
++  return r;
++};
+ 
+-Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  return (this[offset] << 8) | this[offset + 1]
+-}
++MPrime.prototype.split = function split(input, out) {
++  input.ishrn(this.n, 0, out);
++};
+ 
+-Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
++MPrime.prototype.imulK = function imulK(num) {
++  return num.imul(this.k);
++};
+ 
+-  return ((this[offset]) |
+-      (this[offset + 1] << 8) |
+-      (this[offset + 2] << 16)) +
+-      (this[offset + 3] * 0x1000000)
++function K256() {
++  MPrime.call(
++    this,
++    'k256',
++    'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
+ }
++inherits(K256, MPrime);
+ 
+-Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
++K256.prototype.split = function split(input, output) {
++  // 256 = 9 * 26 + 22
++  var mask = 0x3fffff;
+ 
+-  return (this[offset] * 0x1000000) +
+-    ((this[offset + 1] << 16) |
+-    (this[offset + 2] << 8) |
+-    this[offset + 3])
+-}
++  var outLen = Math.min(input.length, 9);
++  for (var i = 0; i < outLen; i++)
++    output.words[i] = input.words[i];
++  output.length = outLen;
+ 
+-Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
++  if (input.length <= 9) {
++    input.words[0] = 0;
++    input.length = 1;
++    return;
++  }
+ 
+-  var val = this[offset]
+-  var mul = 1
+-  var i = 0
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    val += this[offset + i] * mul
++  // Shift by 9 limbs
++  var prev = input.words[9];
++  output.words[output.length++] = prev & mask;
++
++  for (var i = 10; i < input.length; i++) {
++    var next = input.words[i];
++    input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
++    prev = next;
+   }
+-  mul *= 0x80
++  input.words[i - 10] = prev >>> 22;
++  input.length -= 9;
++};
+ 
+-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
++K256.prototype.imulK = function imulK(num) {
++  // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
++  num.words[num.length] = 0;
++  num.words[num.length + 1] = 0;
++  num.length += 2;
+ 
+-  return val
+-}
++  // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
++  var hi;
++  var lo = 0;
++  for (var i = 0; i < num.length; i++) {
++    var w = num.words[i];
++    hi = w * 0x40;
++    lo += w * 0x3d1;
++    hi += (lo / 0x4000000) | 0;
++    lo &= 0x3ffffff;
+ 
+-Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkOffset(offset, byteLength, this.length)
++    num.words[i] = lo;
+ 
+-  var i = byteLength
+-  var mul = 1
+-  var val = this[offset + --i]
+-  while (i > 0 && (mul *= 0x100)) {
+-    val += this[offset + --i] * mul
++    lo = hi;
+   }
+-  mul *= 0x80
+ 
+-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+-
+-  return val
+-}
++  // Fast length reduction
++  if (num.words[num.length - 1] === 0) {
++    num.length--;
++    if (num.words[num.length - 1] === 0)
++      num.length--;
++  }
++  return num;
++};
+ 
+-Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 1, this.length)
+-  if (!(this[offset] & 0x80)) return (this[offset])
+-  return ((0xff - this[offset] + 1) * -1)
++function P224() {
++  MPrime.call(
++    this,
++    'p224',
++    'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
+ }
++inherits(P224, MPrime);
+ 
+-Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  var val = this[offset] | (this[offset + 1] << 8)
+-  return (val & 0x8000) ? val | 0xFFFF0000 : val
++function P192() {
++  MPrime.call(
++    this,
++    'p192',
++    'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
+ }
++inherits(P192, MPrime);
+ 
+-Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 2, this.length)
+-  var val = this[offset + 1] | (this[offset] << 8)
+-  return (val & 0x8000) ? val | 0xFFFF0000 : val
++function P25519() {
++  // 2 ^ 255 - 19
++  MPrime.call(
++    this,
++    '25519',
++    '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
+ }
++inherits(P25519, MPrime);
+ 
+-Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-
+-  return (this[offset]) |
+-    (this[offset + 1] << 8) |
+-    (this[offset + 2] << 16) |
+-    (this[offset + 3] << 24)
+-}
+-
+-Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-
+-  return (this[offset] << 24) |
+-    (this[offset + 1] << 16) |
+-    (this[offset + 2] << 8) |
+-    (this[offset + 3])
+-}
+-
+-Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-  return ieee754.read(this, offset, true, 23, 4)
+-}
+-
+-Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 4, this.length)
+-  return ieee754.read(this, offset, false, 23, 4)
+-}
++P25519.prototype.imulK = function imulK(num) {
++  // K = 0x13
++  var carry = 0;
++  for (var i = 0; i < num.length; i++) {
++    var hi = num.words[i] * 0x13 + carry;
++    var lo = hi & 0x3ffffff;
++    hi >>>= 26;
+ 
+-Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 8, this.length)
+-  return ieee754.read(this, offset, true, 52, 8)
+-}
++    num.words[i] = lo;
++    carry = hi;
++  }
++  if (carry !== 0)
++    num.words[num.length++] = carry;
++  return num;
++};
+ 
+-Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+-  if (!noAssert) checkOffset(offset, 8, this.length)
+-  return ieee754.read(this, offset, false, 52, 8)
+-}
++// Exported mostly for testing purposes, use plain name instead
++BN._prime = function prime(name) {
++  // Cached version of prime
++  if (primes[name])
++    return primes[name];
+ 
+-function checkInt (buf, value, offset, ext, max, min) {
+-  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
+-  if (value > max || value < min) throw new RangeError('value is out of bounds')
+-  if (offset + ext > buf.length) throw new RangeError('index out of range')
+-}
++  var prime;
++  if (name === 'k256')
++    prime = new K256();
++  else if (name === 'p224')
++    prime = new P224();
++  else if (name === 'p192')
++    prime = new P192();
++  else if (name === 'p25519')
++    prime = new P25519();
++  else
++    throw new Error('Unknown prime ' + name);
++  primes[name] = prime;
+ 
+-Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
++  return prime;
++};
+ 
+-  var mul = 1
+-  var i = 0
+-  this[offset] = value & 0xFF
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    this[offset + i] = (value / mul) & 0xFF
++//
++// Base reduction engine
++//
++function Red(m) {
++  if (typeof m === 'string') {
++    var prime = BN._prime(m);
++    this.m = prime.p;
++    this.prime = prime;
++  } else {
++    this.m = m;
++    this.prime = null;
+   }
+-
+-  return offset + byteLength
+ }
+ 
+-Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  byteLength = byteLength | 0
+-  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
++Red.prototype._verify1 = function _verify1(a) {
++  assert(!a.sign, 'red works only with positives');
++  assert(a.red, 'red works only with red numbers');
++};
+ 
+-  var i = byteLength - 1
+-  var mul = 1
+-  this[offset + i] = value & 0xFF
+-  while (--i >= 0 && (mul *= 0x100)) {
+-    this[offset + i] = (value / mul) & 0xFF
+-  }
++Red.prototype._verify2 = function _verify2(a, b) {
++  assert(!a.sign && !b.sign, 'red works only with positives');
++  assert(a.red && a.red === b.red,
++         'red works only with red numbers');
++};
+ 
+-  return offset + byteLength
+-}
++Red.prototype.imod = function imod(a) {
++  if (this.prime)
++    return this.prime.ireduce(a)._forceRed(this);
++  return a.mod(this.m)._forceRed(this);
++};
+ 
+-Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+-  this[offset] = (value & 0xff)
+-  return offset + 1
+-}
++Red.prototype.neg = function neg(a) {
++  var r = a.clone();
++  r.sign = !r.sign;
++  return r.iadd(this.m)._forceRed(this);
++};
+ 
+-function objectWriteUInt16 (buf, value, offset, littleEndian) {
+-  if (value < 0) value = 0xffff + value + 1
+-  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
+-    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
+-      (littleEndian ? i : 1 - i) * 8
+-  }
+-}
++Red.prototype.add = function add(a, b) {
++  this._verify2(a, b);
+ 
+-Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
+-  } else {
+-    objectWriteUInt16(this, value, offset, true)
+-  }
+-  return offset + 2
+-}
++  var res = a.add(b);
++  if (res.cmp(this.m) >= 0)
++    res.isub(this.m);
++  return res._forceRed(this);
++};
+ 
+-Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 8)
+-    this[offset + 1] = (value & 0xff)
+-  } else {
+-    objectWriteUInt16(this, value, offset, false)
+-  }
+-  return offset + 2
+-}
++Red.prototype.iadd = function iadd(a, b) {
++  this._verify2(a, b);
+ 
+-function objectWriteUInt32 (buf, value, offset, littleEndian) {
+-  if (value < 0) value = 0xffffffff + value + 1
+-  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
+-    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
+-  }
+-}
++  var res = a.iadd(b);
++  if (res.cmp(this.m) >= 0)
++    res.isub(this.m);
++  return res;
++};
+ 
+-Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset + 3] = (value >>> 24)
+-    this[offset + 2] = (value >>> 16)
+-    this[offset + 1] = (value >>> 8)
+-    this[offset] = (value & 0xff)
+-  } else {
+-    objectWriteUInt32(this, value, offset, true)
+-  }
+-  return offset + 4
+-}
++Red.prototype.sub = function sub(a, b) {
++  this._verify2(a, b);
+ 
+-Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 24)
+-    this[offset + 1] = (value >>> 16)
+-    this[offset + 2] = (value >>> 8)
+-    this[offset + 3] = (value & 0xff)
+-  } else {
+-    objectWriteUInt32(this, value, offset, false)
+-  }
+-  return offset + 4
+-}
++  var res = a.sub(b);
++  if (res.cmpn(0) < 0)
++    res.iadd(this.m);
++  return res._forceRed(this);
++};
+ 
+-Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) {
+-    var limit = Math.pow(2, 8 * byteLength - 1)
++Red.prototype.isub = function isub(a, b) {
++  this._verify2(a, b);
+ 
+-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+-  }
++  var res = a.isub(b);
++  if (res.cmpn(0) < 0)
++    res.iadd(this.m);
++  return res;
++};
+ 
+-  var i = 0
+-  var mul = 1
+-  var sub = value < 0 ? 1 : 0
+-  this[offset] = value & 0xFF
+-  while (++i < byteLength && (mul *= 0x100)) {
+-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+-  }
++Red.prototype.shl = function shl(a, num) {
++  this._verify1(a);
++  return this.imod(a.shln(num));
++};
+ 
+-  return offset + byteLength
+-}
++Red.prototype.imul = function imul(a, b) {
++  this._verify2(a, b);
++  return this.imod(a.imul(b));
++};
+ 
+-Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) {
+-    var limit = Math.pow(2, 8 * byteLength - 1)
++Red.prototype.mul = function mul(a, b) {
++  this._verify2(a, b);
++  return this.imod(a.mul(b));
++};
+ 
+-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+-  }
++Red.prototype.isqr = function isqr(a) {
++  return this.imul(a, a);
++};
+ 
+-  var i = byteLength - 1
+-  var mul = 1
+-  var sub = value < 0 ? 1 : 0
+-  this[offset + i] = value & 0xFF
+-  while (--i >= 0 && (mul *= 0x100)) {
+-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+-  }
++Red.prototype.sqr = function sqr(a) {
++  return this.mul(a, a);
++};
+ 
+-  return offset + byteLength
+-}
++Red.prototype.sqrt = function sqrt(a) {
++  if (a.cmpn(0) === 0)
++    return a.clone();
+ 
+-Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+-  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+-  if (value < 0) value = 0xff + value + 1
+-  this[offset] = (value & 0xff)
+-  return offset + 1
+-}
++  var mod3 = this.m.andln(3);
++  assert(mod3 % 2 === 1);
+ 
+-Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
+-  } else {
+-    objectWriteUInt16(this, value, offset, true)
++  // Fast case
++  if (mod3 === 3) {
++    var pow = this.m.add(new BN(1)).ishrn(2);
++    var r = this.pow(a, pow);
++    return r;
+   }
+-  return offset + 2
+-}
+ 
+-Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 8)
+-    this[offset + 1] = (value & 0xff)
+-  } else {
+-    objectWriteUInt16(this, value, offset, false)
++  // Tonelli-Shanks algorithm (Totally unoptimized and slow)
++  //
++  // Find Q and S, that Q * 2 ^ S = (P - 1)
++  var q = this.m.subn(1);
++  var s = 0;
++  while (q.cmpn(0) !== 0 && q.andln(1) === 0) {
++    s++;
++    q.ishrn(1);
+   }
+-  return offset + 2
+-}
++  assert(q.cmpn(0) !== 0);
+ 
+-Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value & 0xff)
+-    this[offset + 1] = (value >>> 8)
+-    this[offset + 2] = (value >>> 16)
+-    this[offset + 3] = (value >>> 24)
+-  } else {
+-    objectWriteUInt32(this, value, offset, true)
+-  }
+-  return offset + 4
+-}
++  var one = new BN(1).toRed(this);
++  var nOne = one.redNeg();
+ 
+-Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+-  value = +value
+-  offset = offset | 0
+-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+-  if (value < 0) value = 0xffffffff + value + 1
+-  if (Buffer.TYPED_ARRAY_SUPPORT) {
+-    this[offset] = (value >>> 24)
+-    this[offset + 1] = (value >>> 16)
+-    this[offset + 2] = (value >>> 8)
+-    this[offset + 3] = (value & 0xff)
+-  } else {
+-    objectWriteUInt32(this, value, offset, false)
+-  }
+-  return offset + 4
+-}
++  // Find quadratic non-residue
++  // NOTE: Max is such because of generalized Riemann hypothesis.
++  var lpow = this.m.subn(1).ishrn(1);
++  var z = this.m.bitLength();
++  z = new BN(2 * z * z).toRed(this);
++  while (this.pow(z, lpow).cmp(nOne) !== 0)
++    z.redIAdd(nOne);
+ 
+-function checkIEEE754 (buf, value, offset, ext, max, min) {
+-  if (offset + ext > buf.length) throw new RangeError('index out of range')
+-  if (offset < 0) throw new RangeError('index out of range')
+-}
++  var c = this.pow(z, q);
++  var r = this.pow(a, q.addn(1).ishrn(1));
++  var t = this.pow(a, q);
++  var m = s;
++  while (t.cmp(one) !== 0) {
++    var tmp = t;
++    for (var i = 0; tmp.cmp(one) !== 0; i++)
++      tmp = tmp.redSqr();
++    assert(i < m);
++    var b = this.pow(c, new BN(1).ishln(m - i - 1));
+ 
+-function writeFloat (buf, value, offset, littleEndian, noAssert) {
+-  if (!noAssert) {
+-    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
++    r = r.redMul(b);
++    c = b.redSqr();
++    t = t.redMul(c);
++    m = i;
+   }
+-  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+-  return offset + 4
+-}
+-
+-Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+-  return writeFloat(this, value, offset, true, noAssert)
+-}
+ 
+-Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+-  return writeFloat(this, value, offset, false, noAssert)
+-}
++  return r;
++};
+ 
+-function writeDouble (buf, value, offset, littleEndian, noAssert) {
+-  if (!noAssert) {
+-    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
++Red.prototype.invm = function invm(a) {
++  var inv = a._invmp(this.m);
++  if (inv.sign) {
++    inv.sign = false;
++    return this.imod(inv).redNeg();
++  } else {
++    return this.imod(inv);
+   }
+-  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+-  return offset + 8
+-}
+-
+-Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+-  return writeDouble(this, value, offset, true, noAssert)
+-}
+-
+-Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+-  return writeDouble(this, value, offset, false, noAssert)
+-}
++};
+ 
+-// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+-Buffer.prototype.copy = function copy (target, targetStart, start, end) {
+-  if (!start) start = 0
+-  if (!end && end !== 0) end = this.length
+-  if (targetStart >= target.length) targetStart = target.length
+-  if (!targetStart) targetStart = 0
+-  if (end > 0 && end < start) end = start
++Red.prototype.pow = function pow(a, num) {
++  var w = [];
+ 
+-  // Copy 0 bytes; we're done
+-  if (end === start) return 0
+-  if (target.length === 0 || this.length === 0) return 0
++  if (num.cmpn(0) === 0)
++    return new BN(1);
+ 
+-  // Fatal error conditions
+-  if (targetStart < 0) {
+-    throw new RangeError('targetStart out of bounds')
+-  }
+-  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
+-  if (end < 0) throw new RangeError('sourceEnd out of bounds')
++  var q = num.clone();
+ 
+-  // Are we oob?
+-  if (end > this.length) end = this.length
+-  if (target.length - targetStart < end - start) {
+-    end = target.length - targetStart + start
++  while (q.cmpn(0) !== 0) {
++    w.push(q.andln(1));
++    q.ishrn(1);
+   }
+ 
+-  var len = end - start
+-  var i
++  // Skip leading zeroes
++  var res = a;
++  for (var i = 0; i < w.length; i++, res = this.sqr(res))
++    if (w[i] !== 0)
++      break;
+ 
+-  if (this === target && start < targetStart && targetStart < end) {
+-    // descending copy from end
+-    for (i = len - 1; i >= 0; i--) {
+-      target[i + targetStart] = this[i + start]
+-    }
+-  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
+-    // ascending copy from start
+-    for (i = 0; i < len; i++) {
+-      target[i + targetStart] = this[i + start]
++  if (++i < w.length) {
++    for (var q = this.sqr(res); i < w.length; i++, q = this.sqr(q)) {
++      if (w[i] === 0)
++        continue;
++      res = this.mul(res, q);
+     }
+-  } else {
+-    Uint8Array.prototype.set.call(
+-      target,
+-      this.subarray(start, start + len),
+-      targetStart
+-    )
+   }
+ 
+-  return len
+-}
++  return res;
++};
+ 
+-// fill(value, start=0, end=buffer.length)
+-Buffer.prototype.fill = function fill (value, start, end) {
+-  if (!value) value = 0
+-  if (!start) start = 0
+-  if (!end) end = this.length
++Red.prototype.convertTo = function convertTo(num) {
++  var r = num.mod(this.m);
++  if (r === num)
++    return r.clone();
++  else
++    return r;
++};
++
++Red.prototype.convertFrom = function convertFrom(num) {
++  var res = num.clone();
++  res.red = null;
++  return res;
++};
+ 
+-  if (end < start) throw new RangeError('end < start')
++//
++// Montgomery method engine
++//
+ 
+-  // Fill 0 bytes; we're done
+-  if (end === start) return
+-  if (this.length === 0) return
++BN.mont = function mont(num) {
++  return new Mont(num);
++};
+ 
+-  if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
+-  if (end < 0 || end > this.length) throw new RangeError('end out of bounds')
++function Mont(m) {
++  Red.call(this, m);
+ 
+-  var i
+-  if (typeof value === 'number') {
+-    for (i = start; i < end; i++) {
+-      this[i] = value
+-    }
+-  } else {
+-    var bytes = utf8ToBytes(value.toString())
+-    var len = bytes.length
+-    for (i = start; i < end; i++) {
+-      this[i] = bytes[i % len]
+-    }
+-  }
++  this.shift = this.m.bitLength();
++  if (this.shift % 26 !== 0)
++    this.shift += 26 - (this.shift % 26);
++  this.r = new BN(1).ishln(this.shift);
++  this.r2 = this.imod(this.r.sqr());
++  this.rinv = this.r._invmp(this.m);
+ 
+-  return this
++  this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
++  this.minv.sign = true;
++  this.minv = this.minv.mod(this.r);
+ }
++inherits(Mont, Red);
+ 
+-// HELPER FUNCTIONS
+-// ================
+-
+-var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
++Mont.prototype.convertTo = function convertTo(num) {
++  return this.imod(num.shln(this.shift));
++};
+ 
+-function base64clean (str) {
+-  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+-  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
+-  // Node converts strings with length < 2 to ''
+-  if (str.length < 2) return ''
+-  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+-  while (str.length % 4 !== 0) {
+-    str = str + '='
+-  }
+-  return str
+-}
++Mont.prototype.convertFrom = function convertFrom(num) {
++  var r = this.imod(num.mul(this.rinv));
++  r.red = null;
++  return r;
++};
+ 
+-function stringtrim (str) {
+-  if (str.trim) return str.trim()
+-  return str.replace(/^\s+|\s+$/g, '')
+-}
++Mont.prototype.imul = function imul(a, b) {
++  if (a.cmpn(0) === 0 || b.cmpn(0) === 0) {
++    a.words[0] = 0;
++    a.length = 1;
++    return a;
++  }
+ 
+-function toHex (n) {
+-  if (n < 16) return '0' + n.toString(16)
+-  return n.toString(16)
+-}
++  var t = a.imul(b);
++  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
++  var u = t.isub(c).ishrn(this.shift);
++  var res = u;
++  if (u.cmp(this.m) >= 0)
++    res = u.isub(this.m);
++  else if (u.cmpn(0) < 0)
++    res = u.iadd(this.m);
+ 
+-function utf8ToBytes (string, units) {
+-  units = units || Infinity
+-  var codePoint
+-  var length = string.length
+-  var leadSurrogate = null
+-  var bytes = []
++  return res._forceRed(this);
++};
+ 
+-  for (var i = 0; i < length; i++) {
+-    codePoint = string.charCodeAt(i)
++Mont.prototype.mul = function mul(a, b) {
++  if (a.cmpn(0) === 0 || b.cmpn(0) === 0)
++    return new BN(0)._forceRed(this);
+ 
+-    // is surrogate component
+-    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+-      // last char was a lead
+-      if (!leadSurrogate) {
+-        // no lead yet
+-        if (codePoint > 0xDBFF) {
+-          // unexpected trail
+-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-          continue
+-        } else if (i + 1 === length) {
+-          // unpaired lead
+-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-          continue
+-        }
++  var t = a.mul(b);
++  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
++  var u = t.isub(c).ishrn(this.shift);
++  var res = u;
++  if (u.cmp(this.m) >= 0)
++    res = u.isub(this.m);
++  else if (u.cmpn(0) < 0)
++    res = u.iadd(this.m);
+ 
+-        // valid lead
+-        leadSurrogate = codePoint
++  return res._forceRed(this);
++};
+ 
+-        continue
+-      }
++Mont.prototype.invm = function invm(a) {
++  // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
++  var res = this.imod(a._invmp(this.m).mul(this.r2));
++  return res._forceRed(this);
++};
+ 
+-      // 2 leads in a row
+-      if (codePoint < 0xDC00) {
+-        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-        leadSurrogate = codePoint
+-        continue
+-      }
++})(typeof module === 'undefined' || module, this);
+ 
+-      // valid surrogate pair
+-      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
+-    } else if (leadSurrogate) {
+-      // valid bmp char, but last char was a lead
+-      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+-    }
++},{}],51:[function(require,module,exports){
++'use strict'
+ 
+-    leadSurrogate = null
++module.exports = boundary
+ 
+-    // encode utf8
+-    if (codePoint < 0x80) {
+-      if ((units -= 1) < 0) break
+-      bytes.push(codePoint)
+-    } else if (codePoint < 0x800) {
+-      if ((units -= 2) < 0) break
+-      bytes.push(
+-        codePoint >> 0x6 | 0xC0,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else if (codePoint < 0x10000) {
+-      if ((units -= 3) < 0) break
+-      bytes.push(
+-        codePoint >> 0xC | 0xE0,
+-        codePoint >> 0x6 & 0x3F | 0x80,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else if (codePoint < 0x110000) {
+-      if ((units -= 4) < 0) break
+-      bytes.push(
+-        codePoint >> 0x12 | 0xF0,
+-        codePoint >> 0xC & 0x3F | 0x80,
+-        codePoint >> 0x6 & 0x3F | 0x80,
+-        codePoint & 0x3F | 0x80
+-      )
+-    } else {
+-      throw new Error('Invalid code point')
+-    }
++function boundary (cells) {
++  var i, j, k
++  var n = cells.length
++  var sz = 0
++  for (i = 0; i < n; ++i) {
++    sz += cells[i].length
+   }
+-
+-  return bytes
+-}
+-
+-function asciiToBytes (str) {
+-  var byteArray = []
+-  for (var i = 0; i < str.length; i++) {
+-    // Node's code seems to be doing this and not & 0x7F..
+-    byteArray.push(str.charCodeAt(i) & 0xFF)
++  var result = new Array(sz)
++  var ptr = 0
++  for (i = 0; i < n; ++i) {
++    var c = cells[i]
++    var d = c.length
++    for (j = 0; j < d; ++j) {
++      var b = result[ptr++] = new Array(d - 1)
++      var p = 0
++      for (k = 0; k < d; ++k) {
++        if (k === j) {
++          continue
++        }
++        b[p++] = c[k]
++      }
++      if (j & 1) {
++        var tmp = b[1]
++        b[1] = b[0]
++        b[0] = tmp
++      }
++    }
+   }
+-  return byteArray
++  return result
+ }
+ 
+-function utf16leToBytes (str, units) {
+-  var c, hi, lo
+-  var byteArray = []
+-  for (var i = 0; i < str.length; i++) {
+-    if ((units -= 2) < 0) break
++},{}],52:[function(require,module,exports){
++'use strict'
+ 
+-    c = str.charCodeAt(i)
+-    hi = c >> 8
+-    lo = c % 256
+-    byteArray.push(lo)
+-    byteArray.push(hi)
+-  }
++module.exports = boxIntersectWrapper
+ 
+-  return byteArray
+-}
++var pool = require('typedarray-pool')
++var sweep = require('./lib/sweep')
++var boxIntersectIter = require('./lib/intersect')
+ 
+-function base64ToBytes (str) {
+-  return base64.toByteArray(base64clean(str))
++function boxEmpty(d, box) {
++  for(var j=0; j<d; ++j) {
++    if(!(box[j] <= box[j+d])) {
++      return true
++    }
++  }
++  return false
+ }
+ 
+-function blitBuffer (src, dst, offset, length) {
+-  for (var i = 0; i < length; i++) {
+-    if ((i + offset >= dst.length) || (i >= src.length)) break
+-    dst[i + offset] = src[i]
++//Unpack boxes into a flat typed array, remove empty boxes
++function convertBoxes(boxes, d, data, ids) {
++  var ptr = 0
++  var count = 0
++  for(var i=0, n=boxes.length; i<n; ++i) {
++    var b = boxes[i]
++    if(boxEmpty(d, b)) {
++      continue
++    }
++    for(var j=0; j<2*d; ++j) {
++      data[ptr++] = b[j]
++    }
++    ids[count++] = i
+   }
+-  return i
++  return count
+ }
+ 
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"base64-js":54,"ieee754":55,"isarray":56}],54:[function(require,module,exports){
+-'use strict'
+-
+-exports.toByteArray = toByteArray
+-exports.fromByteArray = fromByteArray
+-
+-var lookup = []
+-var revLookup = []
+-var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+-
+-function init () {
+-  var i
+-  var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+-  var len = code.length
++//Perform type conversions, check bounds
++function boxIntersect(red, blue, visit, full) {
++  var n = red.length
++  var m = blue.length
+ 
+-  for (i = 0; i < len; i++) {
+-    lookup[i] = code[i]
++  //If either array is empty, then we can skip this whole thing
++  if(n <= 0 || m <= 0) {
++    return
+   }
+ 
+-  for (i = 0; i < len; ++i) {
+-    revLookup[code.charCodeAt(i)] = i
++  //Compute dimension, if it is 0 then we skip
++  var d = (red[0].length)>>>1
++  if(d <= 0) {
++    return
+   }
+-  revLookup['-'.charCodeAt(0)] = 62
+-  revLookup['_'.charCodeAt(0)] = 63
+-}
+ 
+-init()
++  var retval
+ 
+-function toByteArray (b64) {
+-  var i, j, l, tmp, placeHolders, arr
+-  var len = b64.length
++  //Convert red boxes
++  var redList  = pool.mallocDouble(2*d*n)
++  var redIds   = pool.mallocInt32(n)
++  n = convertBoxes(red, d, redList, redIds)
+ 
+-  if (len % 4 > 0) {
+-    throw new Error('Invalid string. Length must be a multiple of 4')
+-  }
++  if(n > 0) {
++    if(d === 1 && full) {
++      //Special case: 1d complete
++      sweep.init(n)
++      retval = sweep.sweepComplete(
++        d, visit, 
++        0, n, redList, redIds,
++        0, n, redList, redIds)
++    } else {
+ 
+-  // the number of equal signs (place holders)
+-  // if there are two placeholders, than the two characters before it
+-  // represent one byte
+-  // if there is only one, then the three characters before it represent 2 bytes
+-  // this is just a cheap hack to not do indexOf twice
+-  placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
++      //Convert blue boxes
++      var blueList = pool.mallocDouble(2*d*m)
++      var blueIds  = pool.mallocInt32(m)
++      m = convertBoxes(blue, d, blueList, blueIds)
+ 
+-  // base64 is 4/3 + up to two characters of the original data
+-  arr = new Arr(len * 3 / 4 - placeHolders)
++      if(m > 0) {
++        sweep.init(n+m)
+ 
+-  // if there are placeholders, only get up to the last complete 4 chars
+-  l = placeHolders > 0 ? len - 4 : len
++        if(d === 1) {
++          //Special case: 1d bipartite
++          retval = sweep.sweepBipartite(
++            d, visit, 
++            0, n, redList,  redIds,
++            0, m, blueList, blueIds)
++        } else {
++          //General case:  d>1
++          retval = boxIntersectIter(
++            d, visit,    full,
++            n, redList,  redIds,
++            m, blueList, blueIds)
++        }
+ 
+-  var L = 0
++        pool.free(blueList)
++        pool.free(blueIds)
++      }
++    }
+ 
+-  for (i = 0, j = 0; i < l; i += 4, j += 3) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
+-    arr[L++] = (tmp & 0xFF0000) >> 16
+-    arr[L++] = (tmp & 0xFF00) >> 8
+-    arr[L++] = tmp & 0xFF
++    pool.free(redList)
++    pool.free(redIds)
+   }
+ 
+-  if (placeHolders === 2) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
+-    arr[L++] = tmp & 0xFF
+-  } else if (placeHolders === 1) {
+-    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
+-    arr[L++] = (tmp >> 8) & 0xFF
+-    arr[L++] = tmp & 0xFF
+-  }
++  return retval
++}
+ 
+-  return arr
++
++var RESULT
++
++function appendItem(i,j) {
++  RESULT.push([i,j])
+ }
+ 
+-function tripletToBase64 (num) {
+-  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
++function intersectFullArray(x) {
++  RESULT = []
++  boxIntersect(x, x, appendItem, true)
++  return RESULT
+ }
+ 
+-function encodeChunk (uint8, start, end) {
+-  var tmp
+-  var output = []
+-  for (var i = start; i < end; i += 3) {
+-    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+-    output.push(tripletToBase64(tmp))
++function intersectBipartiteArray(x, y) {
++  RESULT = []
++  boxIntersect(x, y, appendItem, false)
++  return RESULT
++}
++
++//User-friendly wrapper, handle full input and no-visitor cases
++function boxIntersectWrapper(arg0, arg1, arg2) {
++  var result
++  switch(arguments.length) {
++    case 1:
++      return intersectFullArray(arg0)
++    case 2:
++      if(typeof arg1 === 'function') {
++        return boxIntersect(arg0, arg0, arg1, true)
++      } else {
++        return intersectBipartiteArray(arg0, arg1)
++      }
++    case 3:
++      return boxIntersect(arg0, arg1, arg2, false)
++    default:
++      throw new Error('box-intersect: Invalid arguments')
+   }
+-  return output.join('')
+ }
++},{"./lib/intersect":54,"./lib/sweep":58,"typedarray-pool":449}],53:[function(require,module,exports){
++'use strict'
+ 
+-function fromByteArray (uint8) {
+-  var tmp
+-  var len = uint8.length
+-  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
+-  var output = ''
+-  var parts = []
+-  var maxChunkLength = 16383 // must be multiple of 3
++var DIMENSION   = 'd'
++var AXIS        = 'ax'
++var VISIT       = 'vv'
++var FLIP        = 'fp'
+ 
+-  // go through the array every three bytes, we'll deal with trailing stuff later
+-  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+-    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+-  }
++var ELEM_SIZE   = 'es'
+ 
+-  // pad the end with zeros, but make sure to not forget the extra bytes
+-  if (extraBytes === 1) {
+-    tmp = uint8[len - 1]
+-    output += lookup[tmp >> 2]
+-    output += lookup[(tmp << 4) & 0x3F]
+-    output += '=='
+-  } else if (extraBytes === 2) {
+-    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
+-    output += lookup[tmp >> 10]
+-    output += lookup[(tmp >> 4) & 0x3F]
+-    output += lookup[(tmp << 2) & 0x3F]
+-    output += '='
+-  }
++var RED_START   = 'rs'
++var RED_END     = 're'
++var RED_BOXES   = 'rb'
++var RED_INDEX   = 'ri'
++var RED_PTR     = 'rp'
+ 
+-  parts.push(output)
++var BLUE_START  = 'bs'
++var BLUE_END    = 'be'
++var BLUE_BOXES  = 'bb'
++var BLUE_INDEX  = 'bi'
++var BLUE_PTR    = 'bp'
+ 
+-  return parts.join('')
+-}
++var RETVAL      = 'rv'
+ 
+-},{}],55:[function(require,module,exports){
+-exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+-  var e, m
+-  var eLen = nBytes * 8 - mLen - 1
+-  var eMax = (1 << eLen) - 1
+-  var eBias = eMax >> 1
+-  var nBits = -7
+-  var i = isLE ? (nBytes - 1) : 0
+-  var d = isLE ? -1 : 1
+-  var s = buffer[offset + i]
++var INNER_LABEL = 'Q'
+ 
+-  i += d
++var ARGS = [
++  DIMENSION,
++  AXIS,
++  VISIT,
++  RED_START,
++  RED_END,
++  RED_BOXES,
++  RED_INDEX,
++  BLUE_START,
++  BLUE_END,
++  BLUE_BOXES,
++  BLUE_INDEX
++]
+ 
+-  e = s & ((1 << (-nBits)) - 1)
+-  s >>= (-nBits)
+-  nBits += eLen
+-  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
++function generateBruteForce(redMajor, flip, full) {
++  var funcName = 'bruteForce' + 
++    (redMajor ? 'Red' : 'Blue') + 
++    (flip ? 'Flip' : '') +
++    (full ? 'Full' : '')
+ 
+-  m = e & ((1 << (-nBits)) - 1)
+-  e >>= (-nBits)
+-  nBits += mLen
+-  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
++  var code = ['function ', funcName, '(', ARGS.join(), '){',
++    'var ', ELEM_SIZE, '=2*', DIMENSION, ';']
+ 
+-  if (e === 0) {
+-    e = 1 - eBias
+-  } else if (e === eMax) {
+-    return m ? NaN : ((s ? -1 : 1) * Infinity)
++  var redLoop = 
++    'for(var i=' + RED_START + ',' + RED_PTR + '=' + ELEM_SIZE + '*' + RED_START + ';' +
++        'i<' + RED_END +';' +
++        '++i,' + RED_PTR + '+=' + ELEM_SIZE + '){' +
++        'var x0=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '],' +
++            'x1=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '+' + DIMENSION + '],' +
++            'xi=' + RED_INDEX + '[i];'
++
++  var blueLoop = 
++    'for(var j=' + BLUE_START + ',' + BLUE_PTR + '=' + ELEM_SIZE + '*' + BLUE_START + ';' +
++        'j<' + BLUE_END + ';' +
++        '++j,' + BLUE_PTR + '+=' + ELEM_SIZE + '){' +
++        'var y0=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '],' +
++            (full ? 'y1=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '+' + DIMENSION + '],' : '') +
++            'yi=' + BLUE_INDEX + '[j];'
++
++  if(redMajor) {
++    code.push(redLoop, INNER_LABEL, ':', blueLoop)
+   } else {
+-    m = m + Math.pow(2, mLen)
+-    e = e - eBias
++    code.push(blueLoop, INNER_LABEL, ':', redLoop)
+   }
+-  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+-}
+ 
+-exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+-  var e, m, c
+-  var eLen = nBytes * 8 - mLen - 1
+-  var eMax = (1 << eLen) - 1
+-  var eBias = eMax >> 1
+-  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+-  var i = isLE ? 0 : (nBytes - 1)
+-  var d = isLE ? 1 : -1
+-  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
++  if(full) {
++    code.push('if(y1<x0||x1<y0)continue;')
++  } else if(flip) {
++    code.push('if(y0<=x0||x1<y0)continue;')
++  } else {
++    code.push('if(y0<x0||x1<y0)continue;')
++  }
+ 
+-  value = Math.abs(value)
++  code.push('for(var k='+AXIS+'+1;k<'+DIMENSION+';++k){'+
++    'var r0='+RED_BOXES+'[k+'+RED_PTR+'],'+
++        'r1='+RED_BOXES+'[k+'+DIMENSION+'+'+RED_PTR+'],'+
++        'b0='+BLUE_BOXES+'[k+'+BLUE_PTR+'],'+
++        'b1='+BLUE_BOXES+'[k+'+DIMENSION+'+'+BLUE_PTR+'];'+
++      'if(r1<b0||b1<r0)continue ' + INNER_LABEL + ';}' +
++      'var ' + RETVAL + '=' + VISIT + '(')
+ 
+-  if (isNaN(value) || value === Infinity) {
+-    m = isNaN(value) ? 1 : 0
+-    e = eMax
++  if(flip) {
++    code.push('yi,xi')
+   } else {
+-    e = Math.floor(Math.log(value) / Math.LN2)
+-    if (value * (c = Math.pow(2, -e)) < 1) {
+-      e--
+-      c *= 2
+-    }
+-    if (e + eBias >= 1) {
+-      value += rt / c
+-    } else {
+-      value += rt * Math.pow(2, 1 - eBias)
+-    }
+-    if (value * c >= 2) {
+-      e++
+-      c /= 2
+-    }
+-
+-    if (e + eBias >= eMax) {
+-      m = 0
+-      e = eMax
+-    } else if (e + eBias >= 1) {
+-      m = (value * c - 1) * Math.pow(2, mLen)
+-      e = e + eBias
+-    } else {
+-      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+-      e = 0
+-    }
++    code.push('xi,yi')
+   }
+ 
+-  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+-
+-  e = (e << mLen) | m
+-  eLen += mLen
+-  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
++  code.push(');if(' + RETVAL + '!==void 0)return ' + RETVAL + ';}}}')
+ 
+-  buffer[offset + i - d] |= s * 128
++  return {
++    name: funcName, 
++    code: code.join('')
++  }
+ }
+ 
+-},{}],56:[function(require,module,exports){
+-var toString = {}.toString;
+-
+-module.exports = Array.isArray || function (arr) {
+-  return toString.call(arr) == '[object Array]';
+-};
+-
+-},{}],57:[function(require,module,exports){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+-
+-function EventEmitter() {
+-  this._events = this._events || {};
+-  this._maxListeners = this._maxListeners || undefined;
+-}
+-module.exports = EventEmitter;
+-
+-// Backwards-compat with node 0.10.x
+-EventEmitter.EventEmitter = EventEmitter;
+-
+-EventEmitter.prototype._events = undefined;
+-EventEmitter.prototype._maxListeners = undefined;
+-
+-// By default EventEmitters will print a warning if more than 10 listeners are
+-// added to it. This is a useful default which helps finding memory leaks.
+-EventEmitter.defaultMaxListeners = 10;
+-
+-// Obviously not all Emitters should be limited to 10. This function allows
+-// that to be increased. Set to zero for unlimited.
+-EventEmitter.prototype.setMaxListeners = function(n) {
+-  if (!isNumber(n) || n < 0 || isNaN(n))
+-    throw TypeError('n must be a positive number');
+-  this._maxListeners = n;
+-  return this;
+-};
+-
+-EventEmitter.prototype.emit = function(type) {
+-  var er, handler, len, args, i, listeners;
++function bruteForcePlanner(full) {
++  var funcName = 'bruteForce' + (full ? 'Full' : 'Partial')
++  var prefix = []
++  var fargs = ARGS.slice()
++  if(!full) {
++    fargs.splice(3, 0, FLIP)
++  }
+ 
+-  if (!this._events)
+-    this._events = {};
++  var code = ['function ' + funcName + '(' + fargs.join() + '){']
+ 
+-  // If there is no 'error' event listener then throw.
+-  if (type === 'error') {
+-    if (!this._events.error ||
+-        (isObject(this._events.error) && !this._events.error.length)) {
+-      er = arguments[1];
+-      if (er instanceof Error) {
+-        throw er; // Unhandled 'error' event
+-      }
+-      throw TypeError('Uncaught, unspecified "error" event.');
+-    }
++  function invoke(redMajor, flip) {
++    var res = generateBruteForce(redMajor, flip, full)
++    prefix.push(res.code)
++    code.push('return ' + res.name + '(' + ARGS.join() + ');')
+   }
+ 
+-  handler = this._events[type];
+-
+-  if (isUndefined(handler))
+-    return false;
++  code.push('if(' + RED_END + '-' + RED_START + '>' +
++                    BLUE_END + '-' + BLUE_START + '){')
+ 
+-  if (isFunction(handler)) {
+-    switch (arguments.length) {
+-      // fast cases
+-      case 1:
+-        handler.call(this);
+-        break;
+-      case 2:
+-        handler.call(this, arguments[1]);
+-        break;
+-      case 3:
+-        handler.call(this, arguments[1], arguments[2]);
+-        break;
+-      // slower
+-      default:
+-        args = Array.prototype.slice.call(arguments, 1);
+-        handler.apply(this, args);
+-    }
+-  } else if (isObject(handler)) {
+-    args = Array.prototype.slice.call(arguments, 1);
+-    listeners = handler.slice();
+-    len = listeners.length;
+-    for (i = 0; i < len; i++)
+-      listeners[i].apply(this, args);
++  if(full) {
++    invoke(true, false)
++    code.push('}else{')
++    invoke(false, false)
++  } else {
++    code.push('if(' + FLIP + '){')
++    invoke(true, true)
++    code.push('}else{')
++    invoke(true, false)
++    code.push('}}else{if(' + FLIP + '){')
++    invoke(false, true)
++    code.push('}else{')
++    invoke(false, false)
++    code.push('}')
+   }
++  code.push('}}return ' + funcName)
+ 
+-  return true;
+-};
+-
+-EventEmitter.prototype.addListener = function(type, listener) {
+-  var m;
++  var codeStr = prefix.join('') + code.join('')
++  var proc = new Function(codeStr)
++  return proc()
++}
+ 
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
+ 
+-  if (!this._events)
+-    this._events = {};
++exports.partial = bruteForcePlanner(false)
++exports.full    = bruteForcePlanner(true)
++},{}],54:[function(require,module,exports){
++'use strict'
+ 
+-  // To avoid recursion in the case that type === "newListener"! Before
+-  // adding it to the listeners, first emit "newListener".
+-  if (this._events.newListener)
+-    this.emit('newListener', type,
+-              isFunction(listener.listener) ?
+-              listener.listener : listener);
++module.exports = boxIntersectIter
+ 
+-  if (!this._events[type])
+-    // Optimize the case of one listener. Don't need the extra array object.
+-    this._events[type] = listener;
+-  else if (isObject(this._events[type]))
+-    // If we've already got an array, just append.
+-    this._events[type].push(listener);
+-  else
+-    // Adding the second element, need to change to array.
+-    this._events[type] = [this._events[type], listener];
++var pool = require('typedarray-pool')
++var bits = require('bit-twiddle')
++var bruteForce = require('./brute')
++var bruteForcePartial = bruteForce.partial
++var bruteForceFull = bruteForce.full
++var sweep = require('./sweep')
++var findMedian = require('./median')
++var genPartition = require('./partition')
+ 
+-  // Check for listener leak
+-  if (isObject(this._events[type]) && !this._events[type].warned) {
+-    if (!isUndefined(this._maxListeners)) {
+-      m = this._maxListeners;
+-    } else {
+-      m = EventEmitter.defaultMaxListeners;
+-    }
++//Twiddle parameters
++var BRUTE_FORCE_CUTOFF    = 128       //Cut off for brute force search
++var SCAN_CUTOFF           = (1<<22)   //Cut off for two way scan
++var SCAN_COMPLETE_CUTOFF  = (1<<22)  
+ 
+-    if (m && m > 0 && this._events[type].length > m) {
+-      this._events[type].warned = true;
+-      console.error('(node) warning: possible EventEmitter memory ' +
+-                    'leak detected. %d listeners added. ' +
+-                    'Use emitter.setMaxListeners() to increase limit.',
+-                    this._events[type].length);
+-      if (typeof console.trace === 'function') {
+-        // not supported in IE 10
+-        console.trace();
+-      }
+-    }
+-  }
++//Partition functions
++var partitionInteriorContainsInterval = genPartition(
++  '!(lo>=p0)&&!(p1>=hi)', 
++  ['p0', 'p1'])
+ 
+-  return this;
+-};
++var partitionStartEqual = genPartition(
++  'lo===p0',
++  ['p0'])
+ 
+-EventEmitter.prototype.on = EventEmitter.prototype.addListener;
++var partitionStartLessThan = genPartition(
++  'lo<p0',
++  ['p0'])
+ 
+-EventEmitter.prototype.once = function(type, listener) {
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
++var partitionEndLessThanEqual = genPartition(
++  'hi<=p0',
++  ['p0'])
+ 
+-  var fired = false;
++var partitionContainsPoint = genPartition(
++  'lo<=p0&&p0<=hi',
++  ['p0'])
+ 
+-  function g() {
+-    this.removeListener(type, g);
++var partitionContainsPointProper = genPartition(
++  'lo<p0&&p0<=hi',
++  ['p0'])
+ 
+-    if (!fired) {
+-      fired = true;
+-      listener.apply(this, arguments);
+-    }
+-  }
++//Frame size for iterative loop
++var IFRAME_SIZE = 6
++var DFRAME_SIZE = 2
+ 
+-  g.listener = listener;
+-  this.on(type, g);
++//Data for box statck
++var INIT_CAPACITY = 1024
++var BOX_ISTACK  = pool.mallocInt32(INIT_CAPACITY)
++var BOX_DSTACK  = pool.mallocDouble(INIT_CAPACITY)
+ 
+-  return this;
+-};
++//Initialize iterative loop queue
++function iterInit(d, count) {
++  var levels = (8 * bits.log2(count+1) * (d+1))|0
++  var maxInts = bits.nextPow2(IFRAME_SIZE*levels)
++  if(BOX_ISTACK.length < maxInts) {
++    pool.free(BOX_ISTACK)
++    BOX_ISTACK = pool.mallocInt32(maxInts)
++  }
++  var maxDoubles = bits.nextPow2(DFRAME_SIZE*levels)
++  if(BOX_DSTACK < maxDoubles) {
++    pool.free(BOX_DSTACK)
++    BOX_DSTACK = pool.mallocDouble(maxDoubles)
++  }
++}
+ 
+-// emits a 'removeListener' event iff the listener was removed
+-EventEmitter.prototype.removeListener = function(type, listener) {
+-  var list, position, length, i;
++//Append item to queue
++function iterPush(ptr,
++  axis, 
++  redStart, redEnd, 
++  blueStart, blueEnd, 
++  state, 
++  lo, hi) {
+ 
+-  if (!isFunction(listener))
+-    throw TypeError('listener must be a function');
++  var iptr = IFRAME_SIZE * ptr
++  BOX_ISTACK[iptr]   = axis
++  BOX_ISTACK[iptr+1] = redStart
++  BOX_ISTACK[iptr+2] = redEnd
++  BOX_ISTACK[iptr+3] = blueStart
++  BOX_ISTACK[iptr+4] = blueEnd
++  BOX_ISTACK[iptr+5] = state
+ 
+-  if (!this._events || !this._events[type])
+-    return this;
++  var dptr = DFRAME_SIZE * ptr
++  BOX_DSTACK[dptr]   = lo
++  BOX_DSTACK[dptr+1] = hi
++}
+ 
+-  list = this._events[type];
+-  length = list.length;
+-  position = -1;
++//Special case:  Intersect single point with list of intervals
++function onePointPartial(
++  d, axis, visit, flip,
++  redStart, redEnd, red, redIndex,
++  blueOffset, blue, blueId) {
+ 
+-  if (list === listener ||
+-      (isFunction(list.listener) && list.listener === listener)) {
+-    delete this._events[type];
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
++  var elemSize = 2 * d
++  var bluePtr  = blueOffset * elemSize
++  var blueX    = blue[bluePtr + axis]
+ 
+-  } else if (isObject(list)) {
+-    for (i = length; i-- > 0;) {
+-      if (list[i] === listener ||
+-          (list[i].listener && list[i].listener === listener)) {
+-        position = i;
+-        break;
++red_loop:
++  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
++    var r0 = red[redPtr+axis]
++    var r1 = red[redPtr+axis+d]
++    if(blueX < r0 || r1 < blueX) {
++      continue
++    }
++    if(flip && blueX === r0) {
++      continue
++    }
++    var redId = redIndex[i]
++    for(var j=axis+1; j<d; ++j) {
++      var r0 = red[redPtr+j]
++      var r1 = red[redPtr+j+d]
++      var b0 = blue[bluePtr+j]
++      var b1 = blue[bluePtr+j+d]
++      if(r1 < b0 || b1 < r0) {
++        continue red_loop
+       }
+     }
+-
+-    if (position < 0)
+-      return this;
+-
+-    if (list.length === 1) {
+-      list.length = 0;
+-      delete this._events[type];
++    var retval
++    if(flip) {
++      retval = visit(blueId, redId)
+     } else {
+-      list.splice(position, 1);
++      retval = visit(redId, blueId)
++    }
++    if(retval !== void 0) {
++      return retval
+     }
+-
+-    if (this._events.removeListener)
+-      this.emit('removeListener', type, listener);
+   }
++}
+ 
+-  return this;
+-};
+-
+-EventEmitter.prototype.removeAllListeners = function(type) {
+-  var key, listeners;
+-
+-  if (!this._events)
+-    return this;
++//Special case:  Intersect one point with list of intervals
++function onePointFull(
++  d, axis, visit,
++  redStart, redEnd, red, redIndex,
++  blueOffset, blue, blueId) {
+ 
+-  // not listening for removeListener, no need to emit
+-  if (!this._events.removeListener) {
+-    if (arguments.length === 0)
+-      this._events = {};
+-    else if (this._events[type])
+-      delete this._events[type];
+-    return this;
+-  }
++  var elemSize = 2 * d
++  var bluePtr  = blueOffset * elemSize
++  var blueX    = blue[bluePtr + axis]
+ 
+-  // emit removeListener for all listeners on all events
+-  if (arguments.length === 0) {
+-    for (key in this._events) {
+-      if (key === 'removeListener') continue;
+-      this.removeAllListeners(key);
++red_loop:
++  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
++    var redId = redIndex[i]
++    if(redId === blueId) {
++      continue
++    }
++    var r0 = red[redPtr+axis]
++    var r1 = red[redPtr+axis+d]
++    if(blueX < r0 || r1 < blueX) {
++      continue
++    }
++    for(var j=axis+1; j<d; ++j) {
++      var r0 = red[redPtr+j]
++      var r1 = red[redPtr+j+d]
++      var b0 = blue[bluePtr+j]
++      var b1 = blue[bluePtr+j+d]
++      if(r1 < b0 || b1 < r0) {
++        continue red_loop
++      }
++    }
++    var retval = visit(redId, blueId)
++    if(retval !== void 0) {
++      return retval
+     }
+-    this.removeAllListeners('removeListener');
+-    this._events = {};
+-    return this;
+-  }
+-
+-  listeners = this._events[type];
+-
+-  if (isFunction(listeners)) {
+-    this.removeListener(type, listeners);
+-  } else if (listeners) {
+-    // LIFO order
+-    while (listeners.length)
+-      this.removeListener(type, listeners[listeners.length - 1]);
+   }
+-  delete this._events[type];
++}
+ 
+-  return this;
+-};
++//The main box intersection routine
++function boxIntersectIter(
++  d, visit, initFull,
++  xSize, xBoxes, xIndex,
++  ySize, yBoxes, yIndex) {
+ 
+-EventEmitter.prototype.listeners = function(type) {
+-  var ret;
+-  if (!this._events || !this._events[type])
+-    ret = [];
+-  else if (isFunction(this._events[type]))
+-    ret = [this._events[type]];
+-  else
+-    ret = this._events[type].slice();
+-  return ret;
+-};
++  //Reserve memory for stack
++  iterInit(d, xSize + ySize)
+ 
+-EventEmitter.prototype.listenerCount = function(type) {
+-  if (this._events) {
+-    var evlistener = this._events[type];
++  var top  = 0
++  var elemSize = 2 * d
++  var retval
+ 
+-    if (isFunction(evlistener))
+-      return 1;
+-    else if (evlistener)
+-      return evlistener.length;
++  iterPush(top++,
++      0,
++      0, xSize,
++      0, ySize,
++      initFull ? 16 : 0, 
++      -Infinity, Infinity)
++  if(!initFull) {
++    iterPush(top++,
++      0,
++      0, ySize,
++      0, xSize,
++      1, 
++      -Infinity, Infinity)
+   }
+-  return 0;
+-};
+ 
+-EventEmitter.listenerCount = function(emitter, type) {
+-  return emitter.listenerCount(type);
+-};
++  while(top > 0) {
++    top  -= 1
+ 
+-function isFunction(arg) {
+-  return typeof arg === 'function';
+-}
++    var iptr = top * IFRAME_SIZE
++    var axis      = BOX_ISTACK[iptr]
++    var redStart  = BOX_ISTACK[iptr+1]
++    var redEnd    = BOX_ISTACK[iptr+2]
++    var blueStart = BOX_ISTACK[iptr+3]
++    var blueEnd   = BOX_ISTACK[iptr+4]
++    var state     = BOX_ISTACK[iptr+5]
+ 
+-function isNumber(arg) {
+-  return typeof arg === 'number';
+-}
++    var dptr = top * DFRAME_SIZE
++    var lo        = BOX_DSTACK[dptr]
++    var hi        = BOX_DSTACK[dptr+1]
+ 
+-function isObject(arg) {
+-  return typeof arg === 'object' && arg !== null;
+-}
++    //Unpack state info
++    var flip      = (state & 1)
++    var full      = !!(state & 16)
+ 
+-function isUndefined(arg) {
+-  return arg === void 0;
+-}
++    //Unpack indices
++    var red       = xBoxes
++    var redIndex  = xIndex
++    var blue      = yBoxes
++    var blueIndex = yIndex
++    if(flip) {
++      red         = yBoxes
++      redIndex    = yIndex
++      blue        = xBoxes
++      blueIndex   = xIndex
++    }
+ 
+-},{}],58:[function(require,module,exports){
+-if (typeof Object.create === 'function') {
+-  // implementation from standard node.js 'util' module
+-  module.exports = function inherits(ctor, superCtor) {
+-    ctor.super_ = superCtor
+-    ctor.prototype = Object.create(superCtor.prototype, {
+-      constructor: {
+-        value: ctor,
+-        enumerable: false,
+-        writable: true,
+-        configurable: true
++    if(state & 2) {
++      redEnd = partitionStartLessThan(
++        d, axis,
++        redStart, redEnd, red, redIndex,
++        hi)
++      if(redStart >= redEnd) {
++        continue
+       }
+-    });
+-  };
+-} else {
+-  // old school shim for old browsers
+-  module.exports = function inherits(ctor, superCtor) {
+-    ctor.super_ = superCtor
+-    var TempCtor = function () {}
+-    TempCtor.prototype = superCtor.prototype
+-    ctor.prototype = new TempCtor()
+-    ctor.prototype.constructor = ctor
+-  }
+-}
+-
+-},{}],59:[function(require,module,exports){
+-(function (process){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
++    }
++    if(state & 4) {
++      redStart = partitionEndLessThanEqual(
++        d, axis,
++        redStart, redEnd, red, redIndex,
++        lo)
++      if(redStart >= redEnd) {
++        continue
++      }
++    }
++    
++    var redCount  = redEnd  - redStart
++    var blueCount = blueEnd - blueStart
+ 
+-// resolves . and .. elements in a path array with directory names there
+-// must be no slashes, empty elements, or device names (c:\) in the array
+-// (so also no leading and trailing slashes - it does not distinguish
+-// relative and absolute paths)
+-function normalizeArray(parts, allowAboveRoot) {
+-  // if the path tries to go above the root, `up` ends up > 0
+-  var up = 0;
+-  for (var i = parts.length - 1; i >= 0; i--) {
+-    var last = parts[i];
+-    if (last === '.') {
+-      parts.splice(i, 1);
+-    } else if (last === '..') {
+-      parts.splice(i, 1);
+-      up++;
+-    } else if (up) {
+-      parts.splice(i, 1);
+-      up--;
++    if(full) {
++      if(d * redCount * (redCount + blueCount) < SCAN_COMPLETE_CUTOFF) {
++        retval = sweep.scanComplete(
++          d, axis, visit, 
++          redStart, redEnd, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      }
++    } else {
++      if(d * Math.min(redCount, blueCount) < BRUTE_FORCE_CUTOFF) {
++        //If input small, then use brute force
++        retval = bruteForcePartial(
++            d, axis, visit, flip,
++            redStart,  redEnd,  red,  redIndex,
++            blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      } else if(d * redCount * blueCount < SCAN_CUTOFF) {
++        //If input medium sized, then use sweep and prune
++        retval = sweep.scanBipartite(
++          d, axis, visit, flip, 
++          redStart, redEnd, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++        continue
++      }
+     }
+-  }
++    
++    //First, find all red intervals whose interior contains (lo,hi)
++    var red0 = partitionInteriorContainsInterval(
++      d, axis, 
++      redStart, redEnd, red, redIndex,
++      lo, hi)
+ 
+-  // if the path is allowed to go above the root, restore leading ..s
+-  if (allowAboveRoot) {
+-    for (; up--; up) {
+-      parts.unshift('..');
++    //Lower dimensional case
++    if(redStart < red0) {
++
++      if(d * (red0 - redStart) < BRUTE_FORCE_CUTOFF) {
++        //Special case for small inputs: use brute force
++        retval = bruteForceFull(
++          d, axis+1, visit,
++          redStart, red0, red, redIndex,
++          blueStart, blueEnd, blue, blueIndex)
++        if(retval !== void 0) {
++          return retval
++        }
++      } else if(axis === d-2) {
++        if(flip) {
++          retval = sweep.sweepBipartite(
++            d, visit,
++            blueStart, blueEnd, blue, blueIndex,
++            redStart, red0, red, redIndex)
++        } else {
++          retval = sweep.sweepBipartite(
++            d, visit,
++            redStart, red0, red, redIndex,
++            blueStart, blueEnd, blue, blueIndex)
++        }
++        if(retval !== void 0) {
++          return retval
++        }
++      } else {
++        iterPush(top++,
++          axis+1,
++          redStart, red0,
++          blueStart, blueEnd,
++          flip,
++          -Infinity, Infinity)
++        iterPush(top++,
++          axis+1,
++          blueStart, blueEnd,
++          redStart, red0,
++          flip^1,
++          -Infinity, Infinity)
++      }
+     }
+-  }
+ 
+-  return parts;
+-}
++    //Divide and conquer phase
++    if(red0 < redEnd) {
+ 
+-// Split a filename into [root, dir, basename, ext], unix version
+-// 'root' is just a slash, or nothing.
+-var splitPathRe =
+-    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
+-var splitPath = function(filename) {
+-  return splitPathRe.exec(filename).slice(1);
+-};
++      //Cut blue into 3 parts:
++      //
++      //  Points < mid point
++      //  Points = mid point
++      //  Points > mid point
++      //
++      var blue0 = findMedian(
++        d, axis, 
++        blueStart, blueEnd, blue, blueIndex)
++      var mid = blue[elemSize * blue0 + axis]
++      var blue1 = partitionStartEqual(
++        d, axis,
++        blue0, blueEnd, blue, blueIndex,
++        mid)
+ 
+-// path.resolve([from ...], to)
+-// posix version
+-exports.resolve = function() {
+-  var resolvedPath = '',
+-      resolvedAbsolute = false;
++      //Right case
++      if(blue1 < blueEnd) {
++        iterPush(top++,
++          axis,
++          red0, redEnd,
++          blue1, blueEnd,
++          (flip|4) + (full ? 16 : 0),
++          mid, hi)
++      }
+ 
+-  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
+-    var path = (i >= 0) ? arguments[i] : process.cwd();
++      //Left case
++      if(blueStart < blue0) {
++        iterPush(top++,
++          axis,
++          red0, redEnd,
++          blueStart, blue0,
++          (flip|2) + (full ? 16 : 0),
++          lo, mid)
++      }
+ 
+-    // Skip empty and invalid entries
+-    if (typeof path !== 'string') {
+-      throw new TypeError('Arguments to path.resolve must be strings');
+-    } else if (!path) {
+-      continue;
+-    }
++      //Center case (the hard part)
++      if(blue0 + 1 === blue1) {
++        //Optimization: Range with exactly 1 point, use a brute force scan
++        if(full) {
++          retval = onePointFull(
++            d, axis, visit,
++            red0, redEnd, red, redIndex,
++            blue0, blue, blueIndex[blue0])
++        } else {
++          retval = onePointPartial(
++            d, axis, visit, flip,
++            red0, redEnd, red, redIndex,
++            blue0, blue, blueIndex[blue0])
++        }
++        if(retval !== void 0) {
++          return retval
++        }
++      } else if(blue0 < blue1) {
++        var red1
++        if(full) {
++          //If full intersection, need to handle special case
++          red1 = partitionContainsPoint(
++            d, axis,
++            red0, redEnd, red, redIndex,
++            mid)
++          if(red0 < red1) {
++            var redX = partitionStartEqual(
++              d, axis,
++              red0, red1, red, redIndex,
++              mid)
++            if(axis === d-2) {
++              //Degenerate sweep intersection:
++              //  [red0, redX] with [blue0, blue1]
++              if(red0 < redX) {
++                retval = sweep.sweepComplete(
++                  d, visit,
++                  red0, redX, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++                if(retval !== void 0) {
++                  return retval
++                }
++              }
+ 
+-    resolvedPath = path + '/' + resolvedPath;
+-    resolvedAbsolute = path.charAt(0) === '/';
++              //Normal sweep intersection:
++              //  [redX, red1] with [blue0, blue1]
++              if(redX < red1) {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  redX, red1, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++                if(retval !== void 0) {
++                  return retval
++                }
++              }
++            } else {
++              if(red0 < redX) {
++                iterPush(top++,
++                  axis+1,
++                  red0, redX,
++                  blue0, blue1,
++                  16,
++                  -Infinity, Infinity)
++              }
++              if(redX < red1) {
++                iterPush(top++,
++                  axis+1,
++                  redX, red1,
++                  blue0, blue1,
++                  0,
++                  -Infinity, Infinity)
++                iterPush(top++,
++                  axis+1,
++                  blue0, blue1,
++                  redX, red1,
++                  1,
++                  -Infinity, Infinity)
++              }
++            }
++          }
++        } else {
++          if(flip) {
++            red1 = partitionContainsPointProper(
++              d, axis,
++              red0, redEnd, red, redIndex,
++              mid)
++          } else {
++            red1 = partitionContainsPoint(
++              d, axis,
++              red0, redEnd, red, redIndex,
++              mid)
++          }
++          if(red0 < red1) {
++            if(axis === d-2) {
++              if(flip) {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  blue0, blue1, blue, blueIndex,
++                  red0, red1, red, redIndex)
++              } else {
++                retval = sweep.sweepBipartite(
++                  d, visit,
++                  red0, red1, red, redIndex,
++                  blue0, blue1, blue, blueIndex)
++              }
++            } else {
++              iterPush(top++,
++                axis+1,
++                red0, red1,
++                blue0, blue1,
++                flip,
++                -Infinity, Infinity)
++              iterPush(top++,
++                axis+1,
++                blue0, blue1,
++                red0, red1,
++                flip^1,
++                -Infinity, Infinity)
++            }
++          }
++        }
++      }
++    }
+   }
++}
++},{"./brute":53,"./median":55,"./partition":56,"./sweep":58,"bit-twiddle":49,"typedarray-pool":449}],55:[function(require,module,exports){
++'use strict'
+ 
+-  // At this point the path should be resolved to a full absolute path, but
+-  // handle relative paths to be safe (might happen when process.cwd() fails)
+-
+-  // Normalize the path
+-  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
+-    return !!p;
+-  }), !resolvedAbsolute).join('/');
++module.exports = findMedian
+ 
+-  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
+-};
++var genPartition = require('./partition')
+ 
+-// path.normalize(path)
+-// posix version
+-exports.normalize = function(path) {
+-  var isAbsolute = exports.isAbsolute(path),
+-      trailingSlash = substr(path, -1) === '/';
++var partitionStartLessThan = genPartition('lo<p0', ['p0'])
+ 
+-  // Normalize the path
+-  path = normalizeArray(filter(path.split('/'), function(p) {
+-    return !!p;
+-  }), !isAbsolute).join('/');
++var PARTITION_THRESHOLD = 8   //Cut off for using insertion sort in findMedian
+ 
+-  if (!path && !isAbsolute) {
+-    path = '.';
+-  }
+-  if (path && trailingSlash) {
+-    path += '/';
++//Base case for median finding:  Use insertion sort
++function insertionSort(d, axis, start, end, boxes, ids) {
++  var elemSize = 2 * d
++  var boxPtr = elemSize * (start+1) + axis
++  for(var i=start+1; i<end; ++i, boxPtr+=elemSize) {
++    var x = boxes[boxPtr]
++    for(var j=i, ptr=elemSize*(i-1); 
++        j>start && boxes[ptr+axis] > x; 
++        --j, ptr-=elemSize) {
++      //Swap
++      var aPtr = ptr
++      var bPtr = ptr+elemSize
++      for(var k=0; k<elemSize; ++k, ++aPtr, ++bPtr) {
++        var y = boxes[aPtr]
++        boxes[aPtr] = boxes[bPtr]
++        boxes[bPtr] = y
++      }
++      var tmp = ids[j]
++      ids[j] = ids[j-1]
++      ids[j-1] = tmp
++    }
+   }
++}
+ 
+-  return (isAbsolute ? '/' : '') + path;
+-};
+-
+-// posix version
+-exports.isAbsolute = function(path) {
+-  return path.charAt(0) === '/';
+-};
++//Find median using quick select algorithm
++//  takes O(n) time with high probability
++function findMedian(d, axis, start, end, boxes, ids) {
++  if(end <= start+1) {
++    return start
++  }
+ 
+-// posix version
+-exports.join = function() {
+-  var paths = Array.prototype.slice.call(arguments, 0);
+-  return exports.normalize(filter(paths, function(p, index) {
+-    if (typeof p !== 'string') {
+-      throw new TypeError('Arguments to path.join must be strings');
++  var lo       = start
++  var hi       = end
++  var mid      = ((end + start) >>> 1)
++  var elemSize = 2*d
++  var pivot    = mid
++  var value    = boxes[elemSize*mid+axis]
++  
++  while(lo < hi) {
++    if(hi - lo < PARTITION_THRESHOLD) {
++      insertionSort(d, axis, lo, hi, boxes, ids)
++      value = boxes[elemSize*mid+axis]
++      break
+     }
+-    return p;
+-  }).join('/'));
+-};
+-
+-
+-// path.relative(from, to)
+-// posix version
+-exports.relative = function(from, to) {
+-  from = exports.resolve(from).substr(1);
+-  to = exports.resolve(to).substr(1);
+-
+-  function trim(arr) {
+-    var start = 0;
+-    for (; start < arr.length; start++) {
+-      if (arr[start] !== '') break;
++    
++    //Select pivot using median-of-3
++    var count  = hi - lo
++    var pivot0 = (Math.random()*count+lo)|0
++    var value0 = boxes[elemSize*pivot0 + axis]
++    var pivot1 = (Math.random()*count+lo)|0
++    var value1 = boxes[elemSize*pivot1 + axis]
++    var pivot2 = (Math.random()*count+lo)|0
++    var value2 = boxes[elemSize*pivot2 + axis]
++    if(value0 <= value1) {
++      if(value2 >= value1) {
++        pivot = pivot1
++        value = value1
++      } else if(value0 >= value2) {
++        pivot = pivot0
++        value = value0
++      } else {
++        pivot = pivot2
++        value = value2
++      }
++    } else {
++      if(value1 >= value2) {
++        pivot = pivot1
++        value = value1
++      } else if(value2 >= value0) {
++        pivot = pivot0
++        value = value0
++      } else {
++        pivot = pivot2
++        value = value2
++      }
+     }
+ 
+-    var end = arr.length - 1;
+-    for (; end >= 0; end--) {
+-      if (arr[end] !== '') break;
++    //Swap pivot to end of array
++    var aPtr = elemSize * (hi-1)
++    var bPtr = elemSize * pivot
++    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
++      var x = boxes[aPtr]
++      boxes[aPtr] = boxes[bPtr]
++      boxes[bPtr] = x
+     }
++    var y = ids[hi-1]
++    ids[hi-1] = ids[pivot]
++    ids[pivot] = y
+ 
+-    if (start > end) return [];
+-    return arr.slice(start, end - start + 1);
+-  }
++    //Partition using pivot
++    pivot = partitionStartLessThan(
++      d, axis, 
++      lo, hi-1, boxes, ids,
++      value)
+ 
+-  var fromParts = trim(from.split('/'));
+-  var toParts = trim(to.split('/'));
++    //Swap pivot back
++    var aPtr = elemSize * (hi-1)
++    var bPtr = elemSize * pivot
++    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
++      var x = boxes[aPtr]
++      boxes[aPtr] = boxes[bPtr]
++      boxes[bPtr] = x
++    }
++    var y = ids[hi-1]
++    ids[hi-1] = ids[pivot]
++    ids[pivot] = y
+ 
+-  var length = Math.min(fromParts.length, toParts.length);
+-  var samePartsLength = length;
+-  for (var i = 0; i < length; i++) {
+-    if (fromParts[i] !== toParts[i]) {
+-      samePartsLength = i;
+-      break;
++    //Swap pivot to last pivot
++    if(mid < pivot) {
++      hi = pivot-1
++      while(lo < hi && 
++        boxes[elemSize*(hi-1)+axis] === value) {
++        hi -= 1
++      }
++      hi += 1
++    } else if(pivot < mid) {
++      lo = pivot + 1
++      while(lo < hi &&
++        boxes[elemSize*lo+axis] === value) {
++        lo += 1
++      }
++    } else {
++      break
+     }
+   }
+ 
+-  var outputParts = [];
+-  for (var i = samePartsLength; i < fromParts.length; i++) {
+-    outputParts.push('..');
+-  }
++  //Make sure pivot is at start
++  return partitionStartLessThan(
++    d, axis, 
++    start, mid, boxes, ids,
++    boxes[elemSize*mid+axis])
++}
++},{"./partition":56}],56:[function(require,module,exports){
++'use strict'
+ 
+-  outputParts = outputParts.concat(toParts.slice(samePartsLength));
++module.exports = genPartition
+ 
+-  return outputParts.join('/');
+-};
+-
+-exports.sep = '/';
+-exports.delimiter = ':';
+-
+-exports.dirname = function(path) {
+-  var result = splitPath(path),
+-      root = result[0],
+-      dir = result[1];
+-
+-  if (!root && !dir) {
+-    // No dirname whatsoever
+-    return '.';
+-  }
++var code = 'for(var j=2*a,k=j*c,l=k,m=c,n=b,o=a+b,p=c;d>p;++p,k+=j){var _;if($)if(m===p)m+=1,l+=j;else{for(var s=0;j>s;++s){var t=e[k+s];e[k+s]=e[l],e[l++]=t}var u=f[p];f[p]=f[m],f[m++]=u}}return m'
+ 
+-  if (dir) {
+-    // It has a dirname, strip trailing slash
+-    dir = dir.substr(0, dir.length - 1);
++function genPartition(predicate, args) {
++  var fargs ='abcdef'.split('').concat(args)
++  var reads = []
++  if(predicate.indexOf('lo') >= 0) {
++    reads.push('lo=e[k+n]')
+   }
+-
+-  return root + dir;
+-};
+-
+-
+-exports.basename = function(path, ext) {
+-  var f = splitPath(path)[2];
+-  // TODO: make this comparison case-insensitive on windows?
+-  if (ext && f.substr(-1 * ext.length) === ext) {
+-    f = f.substr(0, f.length - ext.length);
++  if(predicate.indexOf('hi') >= 0) {
++    reads.push('hi=e[k+o]')
+   }
+-  return f;
+-};
+-
+-
+-exports.extname = function(path) {
+-  return splitPath(path)[3];
+-};
+-
+-function filter (xs, f) {
+-    if (xs.filter) return xs.filter(f);
+-    var res = [];
+-    for (var i = 0; i < xs.length; i++) {
+-        if (f(xs[i], i, xs)) res.push(xs[i]);
+-    }
+-    return res;
++  fargs.push(
++    code.replace('_', reads.join())
++        .replace('$', predicate))
++  return Function.apply(void 0, fargs)
+ }
++},{}],57:[function(require,module,exports){
++'use strict';
+ 
+-// String.prototype.substr - negative index don't work in IE8
+-var substr = 'ab'.substr(-1) === 'b'
+-    ? function (str, start, len) { return str.substr(start, len) }
+-    : function (str, start, len) {
+-        if (start < 0) start = str.length + start;
+-        return str.substr(start, len);
+-    }
+-;
++//This code is extracted from ndarray-sort
++//It is inlined here as a temporary workaround
+ 
+-}).call(this,require('_process'))
+-},{"_process":60}],60:[function(require,module,exports){
+-// shim for using process in browser
++module.exports = wrapper;
+ 
+-var process = module.exports = {};
+-var queue = [];
+-var draining = false;
+-var currentQueue;
+-var queueIndex = -1;
++var INSERT_SORT_CUTOFF = 32
+ 
+-function cleanUpNextTick() {
+-    draining = false;
+-    if (currentQueue.length) {
+-        queue = currentQueue.concat(queue);
+-    } else {
+-        queueIndex = -1;
+-    }
+-    if (queue.length) {
+-        drainQueue();
+-    }
++function wrapper(data, n0) {
++  if (n0 <= 4*INSERT_SORT_CUTOFF) {
++    insertionSort(0, n0 - 1, data);
++  } else {
++    quickSort(0, n0 - 1, data);
++  }
+ }
+ 
+-function drainQueue() {
+-    if (draining) {
+-        return;
+-    }
+-    var timeout = setTimeout(cleanUpNextTick);
+-    draining = true;
+-
+-    var len = queue.length;
+-    while(len) {
+-        currentQueue = queue;
+-        queue = [];
+-        while (++queueIndex < len) {
+-            if (currentQueue) {
+-                currentQueue[queueIndex].run();
+-            }
+-        }
+-        queueIndex = -1;
+-        len = queue.length;
++function insertionSort(left, right, data) {
++  var ptr = 2*(left+1)
++  for(var i=left+1; i<=right; ++i) {
++    var a = data[ptr++]
++    var b = data[ptr++]
++    var j = i
++    var jptr = ptr-2
++    while(j-- > left) {
++      var x = data[jptr-2]
++      var y = data[jptr-1]
++      if(x < a) {
++        break
++      } else if(x === a && y < b) {
++        break
++      }
++      data[jptr]   = x
++      data[jptr+1] = y
++      jptr -= 2
+     }
+-    currentQueue = null;
+-    draining = false;
+-    clearTimeout(timeout);
++    data[jptr]   = a
++    data[jptr+1] = b
++  }
+ }
+ 
+-process.nextTick = function (fun) {
+-    var args = new Array(arguments.length - 1);
+-    if (arguments.length > 1) {
+-        for (var i = 1; i < arguments.length; i++) {
+-            args[i - 1] = arguments[i];
+-        }
+-    }
+-    queue.push(new Item(fun, args));
+-    if (queue.length === 1 && !draining) {
+-        setTimeout(drainQueue, 0);
+-    }
+-};
+-
+-// v8 likes predictible objects
+-function Item(fun, array) {
+-    this.fun = fun;
+-    this.array = array;
++function swap(i, j, data) {
++  i *= 2
++  j *= 2
++  var x = data[i]
++  var y = data[i+1]
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++  data[j] = x
++  data[j+1] = y
+ }
+-Item.prototype.run = function () {
+-    this.fun.apply(null, this.array);
+-};
+-process.title = 'browser';
+-process.browser = true;
+-process.env = {};
+-process.argv = [];
+-process.version = ''; // empty string to avoid regexp issues
+-process.versions = {};
+-
+-function noop() {}
+-
+-process.on = noop;
+-process.addListener = noop;
+-process.once = noop;
+-process.off = noop;
+-process.removeListener = noop;
+-process.removeAllListeners = noop;
+-process.emit = noop;
+ 
+-process.binding = function (name) {
+-    throw new Error('process.binding is not supported');
+-};
++function move(i, j, data) {
++  i *= 2
++  j *= 2
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++}
+ 
+-process.cwd = function () { return '/' };
+-process.chdir = function (dir) {
+-    throw new Error('process.chdir is not supported');
+-};
+-process.umask = function() { return 0; };
++function rotate(i, j, k, data) {
++  i *= 2
++  j *= 2
++  k *= 2
++  var x = data[i]
++  var y = data[i+1]
++  data[i] = data[j]
++  data[i+1] = data[j+1]
++  data[j] = data[k]
++  data[j+1] = data[k+1]
++  data[k] = x
++  data[k+1] = y
++}
+ 
+-},{}],61:[function(require,module,exports){
+-module.exports = function isBuffer(arg) {
+-  return arg && typeof arg === 'object'
+-    && typeof arg.copy === 'function'
+-    && typeof arg.fill === 'function'
+-    && typeof arg.readUInt8 === 'function';
++function shufflePivot(i, j, px, py, data) {
++  i *= 2
++  j *= 2
++  data[i] = data[j]
++  data[j] = px
++  data[i+1] = data[j+1]
++  data[j+1] = py
+ }
+-},{}],62:[function(require,module,exports){
+-(function (process,global){
+-// Copyright Joyent, Inc. and other Node contributors.
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a
+-// copy of this software and associated documentation files (the
+-// "Software"), to deal in the Software without restriction, including
+-// without limitation the rights to use, copy, modify, merge, publish,
+-// distribute, sublicense, and/or sell copies of the Software, and to permit
+-// persons to whom the Software is furnished to do so, subject to the
+-// following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included
+-// in all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-var formatRegExp = /%[sdj%]/g;
+-exports.format = function(f) {
+-  if (!isString(f)) {
+-    var objects = [];
+-    for (var i = 0; i < arguments.length; i++) {
+-      objects.push(inspect(arguments[i]));
+-    }
+-    return objects.join(' ');
++function compare(i, j, data) {
++  i *= 2
++  j *= 2
++  var x = data[i],
++      y = data[j]
++  if(x < y) {
++    return false
++  } else if(x === y) {
++    return data[i+1] > data[j+1]
+   }
++  return true
++}
+ 
+-  var i = 1;
+-  var args = arguments;
+-  var len = args.length;
+-  var str = String(f).replace(formatRegExp, function(x) {
+-    if (x === '%%') return '%';
+-    if (i >= len) return x;
+-    switch (x) {
+-      case '%s': return String(args[i++]);
+-      case '%d': return Number(args[i++]);
+-      case '%j':
+-        try {
+-          return JSON.stringify(args[i++]);
+-        } catch (_) {
+-          return '[Circular]';
+-        }
+-      default:
+-        return x;
+-    }
+-  });
+-  for (var x = args[i]; i < len; x = args[++i]) {
+-    if (isNull(x) || !isObject(x)) {
+-      str += ' ' + x;
+-    } else {
+-      str += ' ' + inspect(x);
+-    }
++function comparePivot(i, y, b, data) {
++  i *= 2
++  var x = data[i]
++  if(x < y) {
++    return true
++  } else if(x === y) {
++    return data[i+1] < b
+   }
+-  return str;
+-};
+-
++  return false
++}
+ 
+-// Mark that a method should not be used.
+-// Returns a modified function which warns once by default.
+-// If --no-deprecation is set, then it is a no-op.
+-exports.deprecate = function(fn, msg) {
+-  // Allow for deprecating things in the process of starting up.
+-  if (isUndefined(global.process)) {
+-    return function() {
+-      return exports.deprecate(fn, msg).apply(this, arguments);
+-    };
++function quickSort(left, right, data) {
++  var sixth = (right - left + 1) / 6 | 0, 
++      index1 = left + sixth, 
++      index5 = right - sixth, 
++      index3 = left + right >> 1, 
++      index2 = index3 - sixth, 
++      index4 = index3 + sixth, 
++      el1 = index1, 
++      el2 = index2, 
++      el3 = index3, 
++      el4 = index4, 
++      el5 = index5, 
++      less = left + 1, 
++      great = right - 1, 
++      tmp = 0
++  if(compare(el1, el2, data)) {
++    tmp = el1
++    el1 = el2
++    el2 = tmp
+   }
+-
+-  if (process.noDeprecation === true) {
+-    return fn;
++  if(compare(el4, el5, data)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
+   }
+-
+-  var warned = false;
+-  function deprecated() {
+-    if (!warned) {
+-      if (process.throwDeprecation) {
+-        throw new Error(msg);
+-      } else if (process.traceDeprecation) {
+-        console.trace(msg);
+-      } else {
+-        console.error(msg);
+-      }
+-      warned = true;
+-    }
+-    return fn.apply(this, arguments);
++  if(compare(el1, el3, data)) {
++    tmp = el1
++    el1 = el3
++    el3 = tmp
++  }
++  if(compare(el2, el3, data)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el1, el4, data)) {
++    tmp = el1
++    el1 = el4
++    el4 = tmp
++  }
++  if(compare(el3, el4, data)) {
++    tmp = el3
++    el3 = el4
++    el4 = tmp
++  }
++  if(compare(el2, el5, data)) {
++    tmp = el2
++    el2 = el5
++    el5 = tmp
++  }
++  if(compare(el2, el3, data)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el4, el5, data)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
+   }
+ 
+-  return deprecated;
+-};
++  var pivot1X = data[2*el2]
++  var pivot1Y = data[2*el2+1]
++  var pivot2X = data[2*el4]
++  var pivot2Y = data[2*el4+1]
+ 
++  var ptr0 = 2 * el1;
++  var ptr2 = 2 * el3;
++  var ptr4 = 2 * el5;
++  var ptr5 = 2 * index1;
++  var ptr6 = 2 * index3;
++  var ptr7 = 2 * index5;
++  for (var i1 = 0; i1 < 2; ++i1) {
++    var x = data[ptr0+i1];
++    var y = data[ptr2+i1];
++    var z = data[ptr4+i1];
++    data[ptr5+i1] = x;
++    data[ptr6+i1] = y;
++    data[ptr7+i1] = z;
++  }
+ 
+-var debugs = {};
+-var debugEnviron;
+-exports.debuglog = function(set) {
+-  if (isUndefined(debugEnviron))
+-    debugEnviron = process.env.NODE_DEBUG || '';
+-  set = set.toUpperCase();
+-  if (!debugs[set]) {
+-    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
+-      var pid = process.pid;
+-      debugs[set] = function() {
+-        var msg = exports.format.apply(exports, arguments);
+-        console.error('%s %d: %s', set, pid, msg);
+-      };
++  move(index2, left, data)
++  move(index4, right, data)
++  for (var k = less; k <= great; ++k) {
++    if (comparePivot(k, pivot1X, pivot1Y, data)) {
++      if (k !== less) {
++        swap(k, less, data)
++      }
++      ++less;
+     } else {
+-      debugs[set] = function() {};
++      if (!comparePivot(k, pivot2X, pivot2Y, data)) {
++        while (true) {
++          if (!comparePivot(great, pivot2X, pivot2Y, data)) {
++            if (--great < k) {
++              break;
++            }
++            continue;
++          } else {
++            if (comparePivot(great, pivot1X, pivot1Y, data)) {
++              rotate(k, less, great, data)
++              ++less;
++              --great;
++            } else {
++              swap(k, great, data)
++              --great;
++            }
++            break;
++          }
++        }
++      }
+     }
+   }
+-  return debugs[set];
+-};
+-
+-
+-/**
+- * Echos the value of a value. Trys to print the value out
+- * in the best way possible given the different types.
+- *
+- * @param {Object} obj The object to print out.
+- * @param {Object} opts Optional options object that alters the output.
+- */
+-/* legacy: obj, showHidden, depth, colors*/
+-function inspect(obj, opts) {
+-  // default options
+-  var ctx = {
+-    seen: [],
+-    stylize: stylizeNoColor
+-  };
+-  // legacy...
+-  if (arguments.length >= 3) ctx.depth = arguments[2];
+-  if (arguments.length >= 4) ctx.colors = arguments[3];
+-  if (isBoolean(opts)) {
+-    // legacy...
+-    ctx.showHidden = opts;
+-  } else if (opts) {
+-    // got an "options" object
+-    exports._extend(ctx, opts);
++  shufflePivot(left, less-1, pivot1X, pivot1Y, data)
++  shufflePivot(right, great+1, pivot2X, pivot2Y, data)
++  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
++    insertionSort(left, less - 2, data);
++  } else {
++    quickSort(left, less - 2, data);
++  }
++  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
++    insertionSort(great + 2, right, data);
++  } else {
++    quickSort(great + 2, right, data);
++  }
++  if (great - less <= INSERT_SORT_CUTOFF) {
++    insertionSort(less, great, data);
++  } else {
++    quickSort(less, great, data);
+   }
+-  // set default options
+-  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
+-  if (isUndefined(ctx.depth)) ctx.depth = 2;
+-  if (isUndefined(ctx.colors)) ctx.colors = false;
+-  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
+-  if (ctx.colors) ctx.stylize = stylizeWithColor;
+-  return formatValue(ctx, obj, ctx.depth);
+ }
+-exports.inspect = inspect;
++},{}],58:[function(require,module,exports){
++'use strict'
+ 
++module.exports = {
++  init:           sqInit,
++  sweepBipartite: sweepBipartite,
++  sweepComplete:  sweepComplete,
++  scanBipartite:  scanBipartite,
++  scanComplete:   scanComplete
++}
+ 
+-// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
+-inspect.colors = {
+-  'bold' : [1, 22],
+-  'italic' : [3, 23],
+-  'underline' : [4, 24],
+-  'inverse' : [7, 27],
+-  'white' : [37, 39],
+-  'grey' : [90, 39],
+-  'black' : [30, 39],
+-  'blue' : [34, 39],
+-  'cyan' : [36, 39],
+-  'green' : [32, 39],
+-  'magenta' : [35, 39],
+-  'red' : [31, 39],
+-  'yellow' : [33, 39]
+-};
+-
+-// Don't use 'blue' not visible on cmd.exe
+-inspect.styles = {
+-  'special': 'cyan',
+-  'number': 'yellow',
+-  'boolean': 'yellow',
+-  'undefined': 'grey',
+-  'null': 'bold',
+-  'string': 'green',
+-  'date': 'magenta',
+-  // "name": intentionally not styling
+-  'regexp': 'red'
+-};
++var pool  = require('typedarray-pool')
++var bits  = require('bit-twiddle')
++var isort = require('./sort')
+ 
++//Flag for blue
++var BLUE_FLAG = (1<<28)
+ 
+-function stylizeWithColor(str, styleType) {
+-  var style = inspect.styles[styleType];
++//1D sweep event queue stuff (use pool to save space)
++var INIT_CAPACITY      = 1024
++var RED_SWEEP_QUEUE    = pool.mallocInt32(INIT_CAPACITY)
++var RED_SWEEP_INDEX    = pool.mallocInt32(INIT_CAPACITY)
++var BLUE_SWEEP_QUEUE   = pool.mallocInt32(INIT_CAPACITY)
++var BLUE_SWEEP_INDEX   = pool.mallocInt32(INIT_CAPACITY)
++var COMMON_SWEEP_QUEUE = pool.mallocInt32(INIT_CAPACITY)
++var COMMON_SWEEP_INDEX = pool.mallocInt32(INIT_CAPACITY)
++var SWEEP_EVENTS       = pool.mallocDouble(INIT_CAPACITY * 8)
+ 
+-  if (style) {
+-    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
+-           '\u001b[' + inspect.colors[style][1] + 'm';
+-  } else {
+-    return str;
++//Reserves memory for the 1D sweep data structures
++function sqInit(count) {
++  var rcount = bits.nextPow2(count)
++  if(RED_SWEEP_QUEUE.length < rcount) {
++    pool.free(RED_SWEEP_QUEUE)
++    RED_SWEEP_QUEUE = pool.mallocInt32(rcount)
++  }
++  if(RED_SWEEP_INDEX.length < rcount) {
++    pool.free(RED_SWEEP_INDEX)
++    RED_SWEEP_INDEX = pool.mallocInt32(rcount)
++  }
++  if(BLUE_SWEEP_QUEUE.length < rcount) {
++    pool.free(BLUE_SWEEP_QUEUE)
++    BLUE_SWEEP_QUEUE = pool.mallocInt32(rcount)
++  }
++  if(BLUE_SWEEP_INDEX.length < rcount) {
++    pool.free(BLUE_SWEEP_INDEX)
++    BLUE_SWEEP_INDEX = pool.mallocInt32(rcount)
++  }
++  if(COMMON_SWEEP_QUEUE.length < rcount) {
++    pool.free(COMMON_SWEEP_QUEUE)
++    COMMON_SWEEP_QUEUE = pool.mallocInt32(rcount)
++  }
++  if(COMMON_SWEEP_INDEX.length < rcount) {
++    pool.free(COMMON_SWEEP_INDEX)
++    COMMON_SWEEP_INDEX = pool.mallocInt32(rcount)
++  }
++  var eventLength = 8 * rcount
++  if(SWEEP_EVENTS.length < eventLength) {
++    pool.free(SWEEP_EVENTS)
++    SWEEP_EVENTS = pool.mallocDouble(eventLength)
+   }
+ }
+ 
+-
+-function stylizeNoColor(str, styleType) {
+-  return str;
++//Remove an item from the active queue in O(1)
++function sqPop(queue, index, count, item) {
++  var idx = index[item]
++  var top = queue[count-1]
++  queue[idx] = top
++  index[top] = idx
+ }
+ 
+-
+-function arrayToHash(array) {
+-  var hash = {};
+-
+-  array.forEach(function(val, idx) {
+-    hash[val] = true;
+-  });
+-
+-  return hash;
++//Insert an item into the active queue in O(1)
++function sqPush(queue, index, count, item) {
++  queue[count] = item
++  index[item]  = count
+ }
+ 
++//Recursion base case: use 1D sweep algorithm
++function sweepBipartite(
++    d, visit,
++    redStart,  redEnd, red, redIndex,
++    blueStart, blueEnd, blue, blueIndex) {
+ 
+-function formatValue(ctx, value, recurseTimes) {
+-  // Provide a hook for user-specified inspect functions.
+-  // Check that value is an object with an inspect function on it
+-  if (ctx.customInspect &&
+-      value &&
+-      isFunction(value.inspect) &&
+-      // Filter out the util module, it's inspect function is special
+-      value.inspect !== exports.inspect &&
+-      // Also filter out any prototype objects using the circular check.
+-      !(value.constructor && value.constructor.prototype === value)) {
+-    var ret = value.inspect(recurseTimes, ctx);
+-    if (!isString(ret)) {
+-      ret = formatValue(ctx, ret, recurseTimes);
+-    }
+-    return ret;
+-  }
+-
+-  // Primitive types cannot have properties
+-  var primitive = formatPrimitive(ctx, value);
+-  if (primitive) {
+-    return primitive;
+-  }
+-
+-  // Look up the keys of the object.
+-  var keys = Object.keys(value);
+-  var visibleKeys = arrayToHash(keys);
++  //store events as pairs [coordinate, idx]
++  //
++  //  red create:  -(idx+1)
++  //  red destroy: idx
++  //  blue create: -(idx+BLUE_FLAG)
++  //  blue destroy: idx+BLUE_FLAG
++  //
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = d-1
++  var iend     = elemSize-1
+ 
+-  if (ctx.showHidden) {
+-    keys = Object.getOwnPropertyNames(value);
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = redIndex[i]
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -(idx+1)
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
+   }
+ 
+-  // IE doesn't make error fields non-enumerable
+-  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
+-  if (isError(value)
+-      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
+-    return formatError(value);
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = blueIndex[i]+BLUE_FLAG
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
+   }
+ 
+-  // Some type of object without properties can be shortcutted.
+-  if (keys.length === 0) {
+-    if (isFunction(value)) {
+-      var name = value.name ? ': ' + value.name : '';
+-      return ctx.stylize('[Function' + name + ']', 'special');
+-    }
+-    if (isRegExp(value)) {
+-      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
+-    }
+-    if (isDate(value)) {
+-      return ctx.stylize(Date.prototype.toString.call(value), 'date');
+-    }
+-    if (isError(value)) {
+-      return formatError(value);
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive  = 0
++  var blueActive = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e >= BLUE_FLAG) {
++      //blue destroy event
++      e = (e-BLUE_FLAG)|0
++      sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, e)
++    } else if(e >= 0) {
++      //red destroy event
++      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e)
++    } else if(e <= -BLUE_FLAG) {
++      //blue create event
++      e = (-e-BLUE_FLAG)|0
++      for(var j=0; j<redActive; ++j) {
++        var retval = visit(RED_SWEEP_QUEUE[j], e)
++        if(retval !== void 0) {
++          return retval
++        }
++      }
++      sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, e)
++    } else {
++      //red create event
++      e = (-e-1)|0
++      for(var j=0; j<blueActive; ++j) {
++        var retval = visit(e, BLUE_SWEEP_QUEUE[j])
++        if(retval !== void 0) {
++          return retval
++        }
++      }
++      sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, e)
+     }
+   }
++}
+ 
+-  var base = '', array = false, braces = ['{', '}'];
++//Complete sweep
++function sweepComplete(d, visit, 
++  redStart, redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
+ 
+-  // Make Array say that they are Array
+-  if (isArray(value)) {
+-    array = true;
+-    braces = ['[', ']'];
+-  }
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = d-1
++  var iend     = elemSize-1
+ 
+-  // Make functions say that they are functions
+-  if (isFunction(value)) {
+-    var n = value.name ? ': ' + value.name : '';
+-    base = ' [Function' + n + ']';
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = (redIndex[i]+1)<<1
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
+   }
+ 
+-  // Make RegExps say that they are RegExps
+-  if (isRegExp(value)) {
+-    base = ' ' + RegExp.prototype.toString.call(value);
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = (blueIndex[i]+1)<<1
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = (-idx)|1
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx|1
+   }
+ 
+-  // Make dates with properties first say the date
+-  if (isDate(value)) {
+-    base = ' ' + Date.prototype.toUTCString.call(value);
+-  }
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  var blueActive   = 0
++  var commonActive = 0
++  for(var i=0; i<n; ++i) {
++    var e     = SWEEP_EVENTS[2*i+1]|0
++    var color = e&1
++    if(i < n-1 && (e>>1) === (SWEEP_EVENTS[2*i+3]>>1)) {
++      color = 2
++      i += 1
++    }
++    
++    if(e < 0) {
++      //Create event
++      var id = -(e>>1) - 1
+ 
+-  // Make error with message first say the error
+-  if (isError(value)) {
+-    base = ' ' + formatError(value);
+-  }
++      //Intersect with common
++      for(var j=0; j<commonActive; ++j) {
++        var retval = visit(COMMON_SWEEP_QUEUE[j], id)
++        if(retval !== void 0) {
++          return retval
++        }
++      }
+ 
+-  if (keys.length === 0 && (!array || value.length == 0)) {
+-    return braces[0] + base + braces[1];
+-  }
++      if(color !== 0) {
++        //Intersect with red
++        for(var j=0; j<redActive; ++j) {
++          var retval = visit(RED_SWEEP_QUEUE[j], id)
++          if(retval !== void 0) {
++            return retval
++          }
++        }
++      }
+ 
+-  if (recurseTimes < 0) {
+-    if (isRegExp(value)) {
+-      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
++      if(color !== 1) {
++        //Intersect with blue
++        for(var j=0; j<blueActive; ++j) {
++          var retval = visit(BLUE_SWEEP_QUEUE[j], id)
++          if(retval !== void 0) {
++            return retval
++          }
++        }
++      }
++
++      if(color === 0) {
++        //Red
++        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, id)
++      } else if(color === 1) {
++        //Blue
++        sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, id)
++      } else if(color === 2) {
++        //Both
++        sqPush(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive++, id)
++      }
+     } else {
+-      return ctx.stylize('[Object]', 'special');
++      //Destroy event
++      var id = (e>>1) - 1
++      if(color === 0) {
++        //Red
++        sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, id)
++      } else if(color === 1) {
++        //Blue
++        sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, id)
++      } else if(color === 2) {
++        //Both
++        sqPop(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive--, id)
++      }
+     }
+   }
++}
+ 
+-  ctx.seen.push(value);
++//Sweep and prune/scanline algorithm:
++//  Scan along axis, detect intersections
++//  Brute force all boxes along axis
++function scanBipartite(
++  d, axis, visit, flip,
++  redStart,  redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
++  
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = axis
++  var iend     = axis+d
+ 
+-  var output;
+-  if (array) {
+-    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
++  var redShift  = 1
++  var blueShift = 1
++  if(flip) {
++    blueShift = BLUE_FLAG
+   } else {
+-    output = keys.map(function(key) {
+-      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
+-    });
++    redShift  = BLUE_FLAG
+   }
+ 
+-  ctx.seen.pop();
+-
+-  return reduceToSingleString(output, base, braces);
+-}
+-
+-
+-function formatPrimitive(ctx, value) {
+-  if (isUndefined(value))
+-    return ctx.stylize('undefined', 'undefined');
+-  if (isString(value)) {
+-    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
+-                                             .replace(/'/g, "\\'")
+-                                             .replace(/\\"/g, '"') + '\'';
+-    return ctx.stylize(simple, 'string');
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = i + redShift
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
++  }
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = i + blueShift
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
+   }
+-  if (isNumber(value))
+-    return ctx.stylize('' + value, 'number');
+-  if (isBoolean(value))
+-    return ctx.stylize('' + value, 'boolean');
+-  // For some reason typeof null is "object", so special case here.
+-  if (isNull(value))
+-    return ctx.stylize('null', 'null');
+-}
+-
+ 
+-function formatError(value) {
+-  return '[' + Error.prototype.toString.call(value) + ']';
+-}
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e < 0) {
++      var idx   = -e
++      var isRed = false
++      if(idx >= BLUE_FLAG) {
++        isRed = !flip
++        idx -= BLUE_FLAG 
++      } else {
++        isRed = !!flip
++        idx -= 1
++      }
++      if(isRed) {
++        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, idx)
++      } else {
++        var blueId  = blueIndex[idx]
++        var bluePtr = elemSize * idx
++        
++        var b0 = blue[bluePtr+axis+1]
++        var b1 = blue[bluePtr+axis+1+d]
+ 
++red_loop:
++        for(var j=0; j<redActive; ++j) {
++          var oidx   = RED_SWEEP_QUEUE[j]
++          var redPtr = elemSize * oidx
+ 
+-function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
+-  var output = [];
+-  for (var i = 0, l = value.length; i < l; ++i) {
+-    if (hasOwnProperty(value, String(i))) {
+-      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
+-          String(i), true));
+-    } else {
+-      output.push('');
+-    }
+-  }
+-  keys.forEach(function(key) {
+-    if (!key.match(/^\d+$/)) {
+-      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
+-          key, true));
+-    }
+-  });
+-  return output;
+-}
++          if(b1 < red[redPtr+axis+1] || 
++             red[redPtr+axis+1+d] < b0) {
++            continue
++          }
+ 
++          for(var k=axis+2; k<d; ++k) {
++            if(blue[bluePtr + k + d] < red[redPtr + k] || 
++               red[redPtr + k + d] < blue[bluePtr + k]) {
++              continue red_loop
++            }
++          }
+ 
+-function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
+-  var name, str, desc;
+-  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
+-  if (desc.get) {
+-    if (desc.set) {
+-      str = ctx.stylize('[Getter/Setter]', 'special');
+-    } else {
+-      str = ctx.stylize('[Getter]', 'special');
+-    }
+-  } else {
+-    if (desc.set) {
+-      str = ctx.stylize('[Setter]', 'special');
+-    }
+-  }
+-  if (!hasOwnProperty(visibleKeys, key)) {
+-    name = '[' + key + ']';
+-  }
+-  if (!str) {
+-    if (ctx.seen.indexOf(desc.value) < 0) {
+-      if (isNull(recurseTimes)) {
+-        str = formatValue(ctx, desc.value, null);
+-      } else {
+-        str = formatValue(ctx, desc.value, recurseTimes - 1);
+-      }
+-      if (str.indexOf('\n') > -1) {
+-        if (array) {
+-          str = str.split('\n').map(function(line) {
+-            return '  ' + line;
+-          }).join('\n').substr(2);
+-        } else {
+-          str = '\n' + str.split('\n').map(function(line) {
+-            return '   ' + line;
+-          }).join('\n');
++          var redId  = redIndex[oidx]
++          var retval
++          if(flip) {
++            retval = visit(blueId, redId)
++          } else {
++            retval = visit(redId, blueId)
++          }
++          if(retval !== void 0) {
++            return retval 
++          }
+         }
+       }
+     } else {
+-      str = ctx.stylize('[Circular]', 'special');
+-    }
+-  }
+-  if (isUndefined(name)) {
+-    if (array && key.match(/^\d+$/)) {
+-      return str;
+-    }
+-    name = JSON.stringify('' + key);
+-    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
+-      name = name.substr(1, name.length - 2);
+-      name = ctx.stylize(name, 'name');
+-    } else {
+-      name = name.replace(/'/g, "\\'")
+-                 .replace(/\\"/g, '"')
+-                 .replace(/(^"|"$)/g, "'");
+-      name = ctx.stylize(name, 'string');
++      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e - redShift)
+     }
+   }
+-
+-  return name + ': ' + str;
+ }
+ 
++function scanComplete(
++  d, axis, visit,
++  redStart,  redEnd, red, redIndex,
++  blueStart, blueEnd, blue, blueIndex) {
+ 
+-function reduceToSingleString(output, base, braces) {
+-  var numLinesEst = 0;
+-  var length = output.reduce(function(prev, cur) {
+-    numLinesEst++;
+-    if (cur.indexOf('\n') >= 0) numLinesEst++;
+-    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
+-  }, 0);
++  var ptr      = 0
++  var elemSize = 2*d
++  var istart   = axis
++  var iend     = axis+d
+ 
+-  if (length > 60) {
+-    return braces[0] +
+-           (base === '' ? '' : base + '\n ') +
+-           ' ' +
+-           output.join(',\n  ') +
+-           ' ' +
+-           braces[1];
++  for(var i=redStart; i<redEnd; ++i) {
++    var idx = i + BLUE_FLAG
++    var redOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
++    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
++    SWEEP_EVENTS[ptr++] = idx
++  }
++  for(var i=blueStart; i<blueEnd; ++i) {
++    var idx = i + 1
++    var blueOffset = elemSize*i
++    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
++    SWEEP_EVENTS[ptr++] = -idx
+   }
+ 
+-  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
+-}
++  //process events from left->right
++  var n = ptr >>> 1
++  isort(SWEEP_EVENTS, n)
++  
++  var redActive    = 0
++  for(var i=0; i<n; ++i) {
++    var e = SWEEP_EVENTS[2*i+1]|0
++    if(e < 0) {
++      var idx   = -e
++      if(idx >= BLUE_FLAG) {
++        RED_SWEEP_QUEUE[redActive++] = idx - BLUE_FLAG
++      } else {
++        idx -= 1
++        var blueId  = blueIndex[idx]
++        var bluePtr = elemSize * idx
+ 
++        var b0 = blue[bluePtr+axis+1]
++        var b1 = blue[bluePtr+axis+1+d]
+ 
+-// NOTE: These type checking functions intentionally don't use `instanceof`
+-// because it is fragile and can be easily faked with `Object.create()`.
+-function isArray(ar) {
+-  return Array.isArray(ar);
+-}
+-exports.isArray = isArray;
++red_loop:
++        for(var j=0; j<redActive; ++j) {
++          var oidx   = RED_SWEEP_QUEUE[j]
++          var redId  = redIndex[oidx]
+ 
+-function isBoolean(arg) {
+-  return typeof arg === 'boolean';
+-}
+-exports.isBoolean = isBoolean;
++          if(redId === blueId) {
++            break
++          }
+ 
+-function isNull(arg) {
+-  return arg === null;
+-}
+-exports.isNull = isNull;
++          var redPtr = elemSize * oidx
++          if(b1 < red[redPtr+axis+1] || 
++            red[redPtr+axis+1+d] < b0) {
++            continue
++          }
++          for(var k=axis+2; k<d; ++k) {
++            if(blue[bluePtr + k + d] < red[redPtr + k] || 
++               red[redPtr + k + d]   < blue[bluePtr + k]) {
++              continue red_loop
++            }
++          }
+ 
+-function isNullOrUndefined(arg) {
+-  return arg == null;
++          var retval = visit(redId, blueId)
++          if(retval !== void 0) {
++            return retval 
++          }
++        }
++      }
++    } else {
++      var idx = e - BLUE_FLAG
++      for(var j=redActive-1; j>=0; --j) {
++        if(RED_SWEEP_QUEUE[j] === idx) {
++          for(var k=j+1; k<redActive; ++k) {
++            RED_SWEEP_QUEUE[k-1] = RED_SWEEP_QUEUE[k]
++          }
++          break
++        }
++      }
++      --redActive
++    }
++  }
+ }
+-exports.isNullOrUndefined = isNullOrUndefined;
++},{"./sort":57,"bit-twiddle":49,"typedarray-pool":449}],59:[function(require,module,exports){
++(function (global){
++/*!
++ * The buffer module from node.js, for the browser.
++ *
++ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
++ * @license  MIT
++ */
++/* eslint-disable no-proto */
+ 
+-function isNumber(arg) {
+-  return typeof arg === 'number';
+-}
+-exports.isNumber = isNumber;
++'use strict'
+ 
+-function isString(arg) {
+-  return typeof arg === 'string';
+-}
+-exports.isString = isString;
++var base64 = require('base64-js')
++var ieee754 = require('ieee754')
++var isArray = require('isarray')
+ 
+-function isSymbol(arg) {
+-  return typeof arg === 'symbol';
+-}
+-exports.isSymbol = isSymbol;
++exports.Buffer = Buffer
++exports.SlowBuffer = SlowBuffer
++exports.INSPECT_MAX_BYTES = 50
+ 
+-function isUndefined(arg) {
+-  return arg === void 0;
+-}
+-exports.isUndefined = isUndefined;
++/**
++ * If `Buffer.TYPED_ARRAY_SUPPORT`:
++ *   === true    Use Uint8Array implementation (fastest)
++ *   === false   Use Object implementation (most compatible, even IE6)
++ *
++ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
++ * Opera 11.6+, iOS 4.2+.
++ *
++ * Due to various browser bugs, sometimes the Object implementation will be used even
++ * when the browser supports typed arrays.
++ *
++ * Note:
++ *
++ *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
++ *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
++ *
++ *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
++ *
++ *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
++ *     incorrect length in some situations.
+ 
+-function isRegExp(re) {
+-  return isObject(re) && objectToString(re) === '[object RegExp]';
+-}
+-exports.isRegExp = isRegExp;
++ * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
++ * get the Object implementation, which is slower but behaves correctly.
++ */
++Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
++  ? global.TYPED_ARRAY_SUPPORT
++  : typedArraySupport()
+ 
+-function isObject(arg) {
+-  return typeof arg === 'object' && arg !== null;
+-}
+-exports.isObject = isObject;
++/*
++ * Export kMaxLength after typed array support is determined.
++ */
++exports.kMaxLength = kMaxLength()
+ 
+-function isDate(d) {
+-  return isObject(d) && objectToString(d) === '[object Date]';
++function typedArraySupport () {
++  try {
++    var arr = new Uint8Array(1)
++    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
++    return arr.foo() === 42 && // typed array instances can be augmented
++        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
++        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
++  } catch (e) {
++    return false
++  }
+ }
+-exports.isDate = isDate;
+ 
+-function isError(e) {
+-  return isObject(e) &&
+-      (objectToString(e) === '[object Error]' || e instanceof Error);
++function kMaxLength () {
++  return Buffer.TYPED_ARRAY_SUPPORT
++    ? 0x7fffffff
++    : 0x3fffffff
+ }
+-exports.isError = isError;
+ 
+-function isFunction(arg) {
+-  return typeof arg === 'function';
+-}
+-exports.isFunction = isFunction;
++function createBuffer (that, length) {
++  if (kMaxLength() < length) {
++    throw new RangeError('Invalid typed array length')
++  }
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    // Return an augmented `Uint8Array` instance, for best performance
++    that = new Uint8Array(length)
++    that.__proto__ = Buffer.prototype
++  } else {
++    // Fallback: Return an object instance of the Buffer class
++    if (that === null) {
++      that = new Buffer(length)
++    }
++    that.length = length
++  }
+ 
+-function isPrimitive(arg) {
+-  return arg === null ||
+-         typeof arg === 'boolean' ||
+-         typeof arg === 'number' ||
+-         typeof arg === 'string' ||
+-         typeof arg === 'symbol' ||  // ES6 symbol
+-         typeof arg === 'undefined';
++  return that
+ }
+-exports.isPrimitive = isPrimitive;
+-
+-exports.isBuffer = require('./support/isBuffer');
+ 
+-function objectToString(o) {
+-  return Object.prototype.toString.call(o);
+-}
++/**
++ * The Buffer constructor returns instances of `Uint8Array` that have their
++ * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
++ * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
++ * and the `Uint8Array` methods. Square bracket notation works as expected -- it
++ * returns a single octet.
++ *
++ * The `Uint8Array` prototype remains unmodified.
++ */
+ 
++function Buffer (arg, encodingOrOffset, length) {
++  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
++    return new Buffer(arg, encodingOrOffset, length)
++  }
+ 
+-function pad(n) {
+-  return n < 10 ? '0' + n.toString(10) : n.toString(10);
++  // Common case.
++  if (typeof arg === 'number') {
++    if (typeof encodingOrOffset === 'string') {
++      throw new Error(
++        'If encoding is specified then the first argument must be a string'
++      )
++    }
++    return allocUnsafe(this, arg)
++  }
++  return from(this, arg, encodingOrOffset, length)
+ }
+ 
++Buffer.poolSize = 8192 // not used by this implementation
+ 
+-var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
+-              'Oct', 'Nov', 'Dec'];
+-
+-// 26 Feb 16:19:34
+-function timestamp() {
+-  var d = new Date();
+-  var time = [pad(d.getHours()),
+-              pad(d.getMinutes()),
+-              pad(d.getSeconds())].join(':');
+-  return [d.getDate(), months[d.getMonth()], time].join(' ');
++// TODO: Legacy, not needed anymore. Remove in next major version.
++Buffer._augment = function (arr) {
++  arr.__proto__ = Buffer.prototype
++  return arr
+ }
+ 
++function from (that, value, encodingOrOffset, length) {
++  if (typeof value === 'number') {
++    throw new TypeError('"value" argument must not be a number')
++  }
+ 
+-// log is just a thin wrapper to console.log that prepends a timestamp
+-exports.log = function() {
+-  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
+-};
+-
+-
+-/**
+- * Inherit the prototype methods from one constructor into another.
+- *
+- * The Function.prototype.inherits from lang.js rewritten as a standalone
+- * function (not on Function.prototype). NOTE: If this file is to be loaded
+- * during bootstrapping this function needs to be rewritten using some native
+- * functions as prototype setup using normal JavaScript does not work as
+- * expected during bootstrapping (see mirror.js in r114903).
+- *
+- * @param {function} ctor Constructor function which needs to inherit the
+- *     prototype.
+- * @param {function} superCtor Constructor function to inherit prototype from.
+- */
+-exports.inherits = require('inherits');
+-
+-exports._extend = function(origin, add) {
+-  // Don't do anything if add isn't an object
+-  if (!add || !isObject(add)) return origin;
++  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
++    return fromArrayBuffer(that, value, encodingOrOffset, length)
++  }
+ 
+-  var keys = Object.keys(add);
+-  var i = keys.length;
+-  while (i--) {
+-    origin[keys[i]] = add[keys[i]];
++  if (typeof value === 'string') {
++    return fromString(that, value, encodingOrOffset)
+   }
+-  return origin;
+-};
+ 
+-function hasOwnProperty(obj, prop) {
+-  return Object.prototype.hasOwnProperty.call(obj, prop);
++  return fromObject(that, value)
+ }
+ 
+-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"./support/isBuffer":61,"_process":60,"inherits":58}],63:[function(require,module,exports){
+-'use strict'
+-
+-var monotoneTriangulate = require('./lib/monotone')
+-var makeIndex = require('./lib/triangulation')
+-var delaunayFlip = require('./lib/delaunay')
+-var filterTriangulation = require('./lib/filter')
++/**
++ * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
++ * if value is a number.
++ * Buffer.from(str[, encoding])
++ * Buffer.from(array)
++ * Buffer.from(buffer)
++ * Buffer.from(arrayBuffer[, byteOffset[, length]])
++ **/
++Buffer.from = function (value, encodingOrOffset, length) {
++  return from(null, value, encodingOrOffset, length)
++}
+ 
+-module.exports = cdt2d
++if (Buffer.TYPED_ARRAY_SUPPORT) {
++  Buffer.prototype.__proto__ = Uint8Array.prototype
++  Buffer.__proto__ = Uint8Array
++  if (typeof Symbol !== 'undefined' && Symbol.species &&
++      Buffer[Symbol.species] === Buffer) {
++    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
++    Object.defineProperty(Buffer, Symbol.species, {
++      value: null,
++      configurable: true
++    })
++  }
++}
+ 
+-function canonicalizeEdge(e) {
+-  return [Math.min(e[0], e[1]), Math.max(e[0], e[1])]
++function assertSize (size) {
++  if (typeof size !== 'number') {
++    throw new TypeError('"size" argument must be a number')
++  } else if (size < 0) {
++    throw new RangeError('"size" argument must not be negative')
++  }
+ }
+ 
+-function compareEdge(a, b) {
+-  return a[0]-b[0] || a[1]-b[1]
++function alloc (that, size, fill, encoding) {
++  assertSize(size)
++  if (size <= 0) {
++    return createBuffer(that, size)
++  }
++  if (fill !== undefined) {
++    // Only pay attention to encoding if it's a string. This
++    // prevents accidentally sending in a number that would
++    // be interpretted as a start offset.
++    return typeof encoding === 'string'
++      ? createBuffer(that, size).fill(fill, encoding)
++      : createBuffer(that, size).fill(fill)
++  }
++  return createBuffer(that, size)
+ }
+ 
+-function canonicalizeEdges(edges) {
+-  return edges.map(canonicalizeEdge).sort(compareEdge)
++/**
++ * Creates a new filled Buffer instance.
++ * alloc(size[, fill[, encoding]])
++ **/
++Buffer.alloc = function (size, fill, encoding) {
++  return alloc(null, size, fill, encoding)
+ }
+ 
+-function getDefault(options, property, dflt) {
+-  if(property in options) {
+-    return options[property]
++function allocUnsafe (that, size) {
++  assertSize(size)
++  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) {
++    for (var i = 0; i < size; ++i) {
++      that[i] = 0
++    }
+   }
+-  return dflt
++  return that
+ }
+ 
+-function cdt2d(points, edges, options) {
++/**
++ * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
++ * */
++Buffer.allocUnsafe = function (size) {
++  return allocUnsafe(null, size)
++}
++/**
++ * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
++ */
++Buffer.allocUnsafeSlow = function (size) {
++  return allocUnsafe(null, size)
++}
+ 
+-  if(!Array.isArray(edges)) {
+-    options = edges || {}
+-    edges = []
+-  } else {
+-    options = options || {}
+-    edges = edges || []
++function fromString (that, string, encoding) {
++  if (typeof encoding !== 'string' || encoding === '') {
++    encoding = 'utf8'
+   }
+ 
+-  //Parse out options
+-  var delaunay = !!getDefault(options, 'delaunay', true)
+-  var interior = !!getDefault(options, 'interior', true)
+-  var exterior = !!getDefault(options, 'exterior', true)
+-  var infinity = !!getDefault(options, 'infinity', false)
+-
+-  //Handle trivial case
+-  if((!interior && !exterior) || points.length === 0) {
+-    return []
++  if (!Buffer.isEncoding(encoding)) {
++    throw new TypeError('"encoding" must be a valid string encoding')
+   }
+ 
+-  //Construct initial triangulation
+-  var cells = monotoneTriangulate(points, edges)
++  var length = byteLength(string, encoding) | 0
++  that = createBuffer(that, length)
+ 
+-  //If delaunay refinement needed, then improve quality by edge flipping
+-  if(delaunay || interior !== exterior || infinity) {
++  var actual = that.write(string, encoding)
+ 
+-    //Index all of the cells to support fast neighborhood queries
+-    var triangulation = makeIndex(points.length, canonicalizeEdges(edges))
+-    for(var i=0; i<cells.length; ++i) {
+-      var f = cells[i]
+-      triangulation.addTriangle(f[0], f[1], f[2])
+-    }
++  if (actual !== length) {
++    // Writing a hex string, for example, that contains invalid characters will
++    // cause everything after the first invalid character to be ignored. (e.g.
++    // 'abxxcd' will be treated as 'ab')
++    that = that.slice(0, actual)
++  }
+ 
+-    //Run edge flipping
+-    if(delaunay) {
+-      delaunayFlip(points, triangulation)
+-    }
++  return that
++}
+ 
+-    //Filter points
+-    if(!exterior) {
+-      return filterTriangulation(triangulation, -1)
+-    } else if(!interior) {
+-      return filterTriangulation(triangulation,  1, infinity)
+-    } else if(infinity) {
+-      return filterTriangulation(triangulation, 0, infinity)
+-    } else {
+-      return triangulation.cells()
+-    }
+-    
+-  } else {
+-    return cells
++function fromArrayLike (that, array) {
++  var length = array.length < 0 ? 0 : checked(array.length) | 0
++  that = createBuffer(that, length)
++  for (var i = 0; i < length; i += 1) {
++    that[i] = array[i] & 255
+   }
++  return that
+ }
+ 
+-},{"./lib/delaunay":64,"./lib/filter":65,"./lib/monotone":66,"./lib/triangulation":67}],64:[function(require,module,exports){
+-'use strict'
+-
+-var inCircle = require('robust-in-sphere')[4]
+-var bsearch = require('binary-search-bounds')
+-
+-module.exports = delaunayRefine
+-
+-function testFlip(points, triangulation, stack, a, b, x) {
+-  var y = triangulation.opposite(a, b)
++function fromArrayBuffer (that, array, byteOffset, length) {
++  array.byteLength // this throws if `array` is not a valid ArrayBuffer
+ 
+-  //Test boundary edge
+-  if(y < 0) {
+-    return
++  if (byteOffset < 0 || array.byteLength < byteOffset) {
++    throw new RangeError('\'offset\' is out of bounds')
+   }
+ 
+-  //Swap edge if order flipped
+-  if(b < a) {
+-    var tmp = a
+-    a = b
+-    b = tmp
+-    tmp = x
+-    x = y
+-    y = tmp
++  if (array.byteLength < byteOffset + (length || 0)) {
++    throw new RangeError('\'length\' is out of bounds')
+   }
+ 
+-  //Test if edge is constrained
+-  if(triangulation.isConstraint(a, b)) {
+-    return
++  if (byteOffset === undefined && length === undefined) {
++    array = new Uint8Array(array)
++  } else if (length === undefined) {
++    array = new Uint8Array(array, byteOffset)
++  } else {
++    array = new Uint8Array(array, byteOffset, length)
+   }
+ 
+-  //Test if edge is delaunay
+-  if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
+-    stack.push(a, b)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    // Return an augmented `Uint8Array` instance, for best performance
++    that = array
++    that.__proto__ = Buffer.prototype
++  } else {
++    // Fallback: Return an object instance of the Buffer class
++    that = fromArrayLike(that, array)
+   }
++  return that
+ }
+ 
+-//Assume edges are sorted lexicographically
+-function delaunayRefine(points, triangulation) {
+-  var stack = []
+-
+-  var numPoints = points.length
+-  var stars = triangulation.stars
+-  for(var a=0; a<numPoints; ++a) {
+-    var star = stars[a]
+-    for(var j=1; j<star.length; j+=2) {
+-      var b = star[j]
+-
+-      //If order is not consistent, then skip edge
+-      if(b < a) {
+-        continue
+-      }
+-
+-      //Check if edge is constrained
+-      if(triangulation.isConstraint(a, b)) {
+-        continue
+-      }
+-
+-      //Find opposite edge
+-      var x = star[j-1], y = -1
+-      for(var k=1; k<star.length; k+=2) {
+-        if(star[k-1] === b) {
+-          y = star[k]
+-          break
+-        }
+-      }
+-
+-      //If this is a boundary edge, don't flip it
+-      if(y < 0) {
+-        continue
+-      }
++function fromObject (that, obj) {
++  if (Buffer.isBuffer(obj)) {
++    var len = checked(obj.length) | 0
++    that = createBuffer(that, len)
+ 
+-      //If edge is in circle, flip it
+-      if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
+-        stack.push(a, b)
+-      }
++    if (that.length === 0) {
++      return that
+     }
+-  }
+ 
+-  while(stack.length > 0) {
+-    var b = stack.pop()
+-    var a = stack.pop()
++    obj.copy(that, 0, 0, len)
++    return that
++  }
+ 
+-    //Find opposite pairs
+-    var x = -1, y = -1
+-    var star = stars[a]
+-    for(var i=1; i<star.length; i+=2) {
+-      var s = star[i-1]
+-      var t = star[i]
+-      if(s === b) {
+-        y = t
+-      } else if(t === b) {
+-        x = s
++  if (obj) {
++    if ((typeof ArrayBuffer !== 'undefined' &&
++        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
++      if (typeof obj.length !== 'number' || isnan(obj.length)) {
++        return createBuffer(that, 0)
+       }
++      return fromArrayLike(that, obj)
+     }
+ 
+-    //If x/y are both valid then skip edge
+-    if(x < 0 || y < 0) {
+-      continue
+-    }
+-
+-    //If edge is now delaunay, then don't flip it
+-    if(inCircle(points[a], points[b], points[x], points[y]) >= 0) {
+-      continue
++    if (obj.type === 'Buffer' && isArray(obj.data)) {
++      return fromArrayLike(that, obj.data)
+     }
++  }
+ 
+-    //Flip the edge
+-    triangulation.flip(a, b)
++  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
++}
+ 
+-    //Test flipping neighboring edges
+-    testFlip(points, triangulation, stack, x, a, y)
+-    testFlip(points, triangulation, stack, a, y, x)
+-    testFlip(points, triangulation, stack, y, b, x)
+-    testFlip(points, triangulation, stack, b, x, y)
++function checked (length) {
++  // Note: cannot use `length < kMaxLength()` here because that fails when
++  // length is NaN (which is otherwise coerced to zero.)
++  if (length >= kMaxLength()) {
++    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
++                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
+   }
++  return length | 0
+ }
+ 
+-},{"binary-search-bounds":68,"robust-in-sphere":69}],65:[function(require,module,exports){
+-'use strict'
+-
+-var bsearch = require('binary-search-bounds')
+-
+-module.exports = classifyFaces
++function SlowBuffer (length) {
++  if (+length != length) { // eslint-disable-line eqeqeq
++    length = 0
++  }
++  return Buffer.alloc(+length)
++}
+ 
+-function FaceIndex(cells, neighbor, constraint, flags, active, next, boundary) {
+-  this.cells       = cells
+-  this.neighbor    = neighbor
+-  this.flags       = flags
+-  this.constraint  = constraint
+-  this.active      = active
+-  this.next        = next
+-  this.boundary    = boundary
++Buffer.isBuffer = function isBuffer (b) {
++  return !!(b != null && b._isBuffer)
+ }
+ 
+-var proto = FaceIndex.prototype
++Buffer.compare = function compare (a, b) {
++  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
++    throw new TypeError('Arguments must be Buffers')
++  }
+ 
+-function compareCell(a, b) {
+-  return a[0] - b[0] ||
+-         a[1] - b[1] ||
+-         a[2] - b[2]
+-}
++  if (a === b) return 0
+ 
+-proto.locate = (function() {
+-  var key = [0,0,0]
+-  return function(a, b, c) {
+-    var x = a, y = b, z = c
+-    if(b < c) {
+-      if(b < a) {
+-        x = b
+-        y = c
+-        z = a
+-      }
+-    } else if(c < a) {
+-      x = c
+-      y = a
+-      z = b
+-    }
+-    if(x < 0) {
+-      return -1
++  var x = a.length
++  var y = b.length
++
++  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
++    if (a[i] !== b[i]) {
++      x = a[i]
++      y = b[i]
++      break
+     }
+-    key[0] = x
+-    key[1] = y
+-    key[2] = z
+-    return bsearch.eq(this.cells, key, compareCell)
+   }
+-})()
+ 
+-function indexCells(triangulation, infinity) {
+-  //First get cells and canonicalize
+-  var cells = triangulation.cells()
+-  var nc = cells.length
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    var x = c[0], y = c[1], z = c[2]
+-    if(y < z) {
+-      if(y < x) {
+-        c[0] = y
+-        c[1] = z
+-        c[2] = x
+-      }
+-    } else if(z < x) {
+-      c[0] = z
+-      c[1] = x
+-      c[2] = y
+-    }
++  if (x < y) return -1
++  if (y < x) return 1
++  return 0
++}
++
++Buffer.isEncoding = function isEncoding (encoding) {
++  switch (String(encoding).toLowerCase()) {
++    case 'hex':
++    case 'utf8':
++    case 'utf-8':
++    case 'ascii':
++    case 'latin1':
++    case 'binary':
++    case 'base64':
++    case 'ucs2':
++    case 'ucs-2':
++    case 'utf16le':
++    case 'utf-16le':
++      return true
++    default:
++      return false
+   }
+-  cells.sort(compareCell)
++}
+ 
+-  //Initialize flag array
+-  var flags = new Array(nc)
+-  for(var i=0; i<flags.length; ++i) {
+-    flags[i] = 0
++Buffer.concat = function concat (list, length) {
++  if (!isArray(list)) {
++    throw new TypeError('"list" argument must be an Array of Buffers')
+   }
+ 
+-  //Build neighbor index, initialize queues
+-  var active = []
+-  var next   = []
+-  var neighbor = new Array(3*nc)
+-  var constraint = new Array(3*nc)
+-  var boundary = null
+-  if(infinity) {
+-    boundary = []
++  if (list.length === 0) {
++    return Buffer.alloc(0)
+   }
+-  var index = new FaceIndex(
+-    cells,
+-    neighbor,
+-    constraint,
+-    flags,
+-    active,
+-    next,
+-    boundary)
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<3; ++j) {
+-      var x = c[j], y = c[(j+1)%3]
+-      var a = neighbor[3*i+j] = index.locate(y, x, triangulation.opposite(y, x))
+-      var b = constraint[3*i+j] = triangulation.isConstraint(x, y)
+-      if(a < 0) {
+-        if(b) {
+-          next.push(i)
+-        } else {
+-          active.push(i)
+-          flags[i] = 1
+-        }
+-        if(infinity) {
+-          boundary.push([y, x, -1])
+-        }
+-      }
++
++  var i
++  if (length === undefined) {
++    length = 0
++    for (i = 0; i < list.length; ++i) {
++      length += list[i].length
+     }
+   }
+-  return index
+-}
+ 
+-function filterCells(cells, flags, target) {
+-  var ptr = 0
+-  for(var i=0; i<cells.length; ++i) {
+-    if(flags[i] === target) {
+-      cells[ptr++] = cells[i]
++  var buffer = Buffer.allocUnsafe(length)
++  var pos = 0
++  for (i = 0; i < list.length; ++i) {
++    var buf = list[i]
++    if (!Buffer.isBuffer(buf)) {
++      throw new TypeError('"list" argument must be an Array of Buffers')
+     }
++    buf.copy(buffer, pos)
++    pos += buf.length
+   }
+-  cells.length = ptr
+-  return cells
++  return buffer
+ }
+ 
+-function classifyFaces(triangulation, target, infinity) {
+-  var index = indexCells(triangulation, infinity)
++function byteLength (string, encoding) {
++  if (Buffer.isBuffer(string)) {
++    return string.length
++  }
++  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
++      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
++    return string.byteLength
++  }
++  if (typeof string !== 'string') {
++    string = '' + string
++  }
+ 
+-  if(target === 0) {
+-    if(infinity) {
+-      return index.cells.concat(index.boundary)
+-    } else {
+-      return index.cells
++  var len = string.length
++  if (len === 0) return 0
++
++  // Use a for loop to avoid recursion
++  var loweredCase = false
++  for (;;) {
++    switch (encoding) {
++      case 'ascii':
++      case 'latin1':
++      case 'binary':
++        return len
++      case 'utf8':
++      case 'utf-8':
++      case undefined:
++        return utf8ToBytes(string).length
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return len * 2
++      case 'hex':
++        return len >>> 1
++      case 'base64':
++        return base64ToBytes(string).length
++      default:
++        if (loweredCase) return utf8ToBytes(string).length // assume utf8
++        encoding = ('' + encoding).toLowerCase()
++        loweredCase = true
+     }
+   }
++}
++Buffer.byteLength = byteLength
+ 
+-  var side = 1
+-  var active = index.active
+-  var next = index.next
+-  var flags = index.flags
+-  var cells = index.cells
+-  var constraint = index.constraint
+-  var neighbor = index.neighbor
++function slowToString (encoding, start, end) {
++  var loweredCase = false
+ 
+-  while(active.length > 0 || next.length > 0) {
+-    while(active.length > 0) {
+-      var t = active.pop()
+-      if(flags[t] === -side) {
+-        continue
+-      }
+-      flags[t] = side
+-      var c = cells[t]
+-      for(var j=0; j<3; ++j) {
+-        var f = neighbor[3*t+j]
+-        if(f >= 0 && flags[f] === 0) {
+-          if(constraint[3*t+j]) {
+-            next.push(f)
+-          } else {
+-            active.push(f)
+-            flags[f] = side
+-          }
+-        }
+-      }
+-    }
++  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
++  // property of a typed array.
+ 
+-    //Swap arrays and loop
+-    var tmp = next
+-    next = active
+-    active = tmp
+-    next.length = 0
+-    side = -side
++  // This behaves neither like String nor Uint8Array in that we set start/end
++  // to their upper/lower bounds if the value passed is out of range.
++  // undefined is handled specially as per ECMA-262 6th Edition,
++  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
++  if (start === undefined || start < 0) {
++    start = 0
++  }
++  // Return early if start > this.length. Done here to prevent potential uint32
++  // coercion fail below.
++  if (start > this.length) {
++    return ''
+   }
+ 
+-  var result = filterCells(cells, flags, target)
+-  if(infinity) {
+-    return result.concat(index.boundary)
++  if (end === undefined || end > this.length) {
++    end = this.length
+   }
+-  return result
+-}
+ 
+-},{"binary-search-bounds":68}],66:[function(require,module,exports){
+-'use strict'
++  if (end <= 0) {
++    return ''
++  }
+ 
+-var bsearch = require('binary-search-bounds')
+-var orient = require('robust-orientation')[3]
++  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
++  end >>>= 0
++  start >>>= 0
+ 
+-var EVENT_POINT = 0
+-var EVENT_END   = 1
+-var EVENT_START = 2
++  if (end <= start) {
++    return ''
++  }
+ 
+-module.exports = monotoneTriangulate
++  if (!encoding) encoding = 'utf8'
+ 
+-//A partial convex hull fragment, made of two unimonotone polygons
+-function PartialHull(a, b, idx, lowerIds, upperIds) {
+-  this.a = a
+-  this.b = b
+-  this.idx = idx
+-  this.lowerIds = lowerIds
+-  this.upperIds = upperIds
+-}
++  while (true) {
++    switch (encoding) {
++      case 'hex':
++        return hexSlice(this, start, end)
+ 
+-//An event in the sweep line procedure
+-function Event(a, b, type, idx) {
+-  this.a    = a
+-  this.b    = b
+-  this.type = type
+-  this.idx  = idx
+-}
++      case 'utf8':
++      case 'utf-8':
++        return utf8Slice(this, start, end)
+ 
+-//This is used to compare events for the sweep line procedure
+-// Points are:
+-//  1. sorted lexicographically
+-//  2. sorted by type  (point < end < start)
+-//  3. segments sorted by winding order
+-//  4. sorted by index
+-function compareEvent(a, b) {
+-  var d =
+-    (a.a[0] - b.a[0]) ||
+-    (a.a[1] - b.a[1]) ||
+-    (a.type - b.type)
+-  if(d) { return d }
+-  if(a.type !== EVENT_POINT) {
+-    d = orient(a.a, a.b, b.b)
+-    if(d) { return d }
+-  }
+-  return a.idx - b.idx
+-}
++      case 'ascii':
++        return asciiSlice(this, start, end)
+ 
+-function testPoint(hull, p) {
+-  return orient(hull.a, hull.b, p)
+-}
++      case 'latin1':
++      case 'binary':
++        return latin1Slice(this, start, end)
+ 
+-function addPoint(cells, hulls, points, p, idx) {
+-  var lo = bsearch.lt(hulls, p, testPoint)
+-  var hi = bsearch.gt(hulls, p, testPoint)
+-  for(var i=lo; i<hi; ++i) {
+-    var hull = hulls[i]
++      case 'base64':
++        return base64Slice(this, start, end)
+ 
+-    //Insert p into lower hull
+-    var lowerIds = hull.lowerIds
+-    var m = lowerIds.length
+-    while(m > 1 && orient(
+-        points[lowerIds[m-2]],
+-        points[lowerIds[m-1]],
+-        p) > 0) {
+-      cells.push(
+-        [lowerIds[m-1],
+-         lowerIds[m-2],
+-         idx])
+-      m -= 1
+-    }
+-    lowerIds.length = m
+-    lowerIds.push(idx)
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return utf16leSlice(this, start, end)
+ 
+-    //Insert p into upper hull
+-    var upperIds = hull.upperIds
+-    var m = upperIds.length
+-    while(m > 1 && orient(
+-        points[upperIds[m-2]],
+-        points[upperIds[m-1]],
+-        p) < 0) {
+-      cells.push(
+-        [upperIds[m-2],
+-         upperIds[m-1],
+-         idx])
+-      m -= 1
++      default:
++        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
++        encoding = (encoding + '').toLowerCase()
++        loweredCase = true
+     }
+-    upperIds.length = m
+-    upperIds.push(idx)
+   }
+ }
+ 
+-function findSplit(hull, edge) {
+-  var d
+-  if(hull.a[0] < edge.a[0]) {
+-    d = orient(hull.a, hull.b, edge.a)
+-  } else {
+-    d = orient(edge.b, edge.a, hull.a)
++// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
++// Buffer instances.
++Buffer.prototype._isBuffer = true
++
++function swap (b, n, m) {
++  var i = b[n]
++  b[n] = b[m]
++  b[m] = i
++}
++
++Buffer.prototype.swap16 = function swap16 () {
++  var len = this.length
++  if (len % 2 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 16-bits')
+   }
+-  if(d) { return d }
+-  if(edge.b[0] < hull.b[0]) {
+-    d = orient(hull.a, hull.b, edge.b)
+-  } else {
+-    d = orient(edge.b, edge.a, hull.b)
++  for (var i = 0; i < len; i += 2) {
++    swap(this, i, i + 1)
+   }
+-  return d || hull.idx - edge.idx
++  return this
+ }
+ 
+-function splitHulls(hulls, points, event) {
+-  var splitIdx = bsearch.le(hulls, event, findSplit)
+-  var hull = hulls[splitIdx]
+-  var upperIds = hull.upperIds
+-  var x = upperIds[upperIds.length-1]
+-  hull.upperIds = [x]
+-  hulls.splice(splitIdx+1, 0,
+-    new PartialHull(event.a, event.b, event.idx, [x], upperIds))
++Buffer.prototype.swap32 = function swap32 () {
++  var len = this.length
++  if (len % 4 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 32-bits')
++  }
++  for (var i = 0; i < len; i += 4) {
++    swap(this, i, i + 3)
++    swap(this, i + 1, i + 2)
++  }
++  return this
+ }
+ 
++Buffer.prototype.swap64 = function swap64 () {
++  var len = this.length
++  if (len % 8 !== 0) {
++    throw new RangeError('Buffer size must be a multiple of 64-bits')
++  }
++  for (var i = 0; i < len; i += 8) {
++    swap(this, i, i + 7)
++    swap(this, i + 1, i + 6)
++    swap(this, i + 2, i + 5)
++    swap(this, i + 3, i + 4)
++  }
++  return this
++}
+ 
+-function mergeHulls(hulls, points, event) {
+-  //Swap pointers for merge search
+-  var tmp = event.a
+-  event.a = event.b
+-  event.b = tmp
+-  var mergeIdx = bsearch.eq(hulls, event, findSplit)
+-  var upper = hulls[mergeIdx]
+-  var lower = hulls[mergeIdx-1]
+-  lower.upperIds = upper.upperIds
+-  hulls.splice(mergeIdx, 1)
++Buffer.prototype.toString = function toString () {
++  var length = this.length | 0
++  if (length === 0) return ''
++  if (arguments.length === 0) return utf8Slice(this, 0, length)
++  return slowToString.apply(this, arguments)
+ }
+ 
++Buffer.prototype.equals = function equals (b) {
++  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
++  if (this === b) return true
++  return Buffer.compare(this, b) === 0
++}
+ 
+-function monotoneTriangulate(points, edges) {
++Buffer.prototype.inspect = function inspect () {
++  var str = ''
++  var max = exports.INSPECT_MAX_BYTES
++  if (this.length > 0) {
++    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
++    if (this.length > max) str += ' ... '
++  }
++  return '<Buffer ' + str + '>'
++}
+ 
+-  var numPoints = points.length
+-  var numEdges = edges.length
++Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
++  if (!Buffer.isBuffer(target)) {
++    throw new TypeError('Argument must be a Buffer')
++  }
+ 
+-  var events = []
++  if (start === undefined) {
++    start = 0
++  }
++  if (end === undefined) {
++    end = target ? target.length : 0
++  }
++  if (thisStart === undefined) {
++    thisStart = 0
++  }
++  if (thisEnd === undefined) {
++    thisEnd = this.length
++  }
+ 
+-  //Create point events
+-  for(var i=0; i<numPoints; ++i) {
+-    events.push(new Event(
+-      points[i],
+-      null,
+-      EVENT_POINT,
+-      i))
++  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
++    throw new RangeError('out of range index')
+   }
+ 
+-  //Create edge events
+-  for(var i=0; i<numEdges; ++i) {
+-    var e = edges[i]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    if(a[0] < b[0]) {
+-      events.push(
+-        new Event(a, b, EVENT_START, i),
+-        new Event(b, a, EVENT_END, i))
+-    } else if(a[0] > b[0]) {
+-      events.push(
+-        new Event(b, a, EVENT_START, i),
+-        new Event(a, b, EVENT_END, i))
+-    }
++  if (thisStart >= thisEnd && start >= end) {
++    return 0
++  }
++  if (thisStart >= thisEnd) {
++    return -1
++  }
++  if (start >= end) {
++    return 1
+   }
+ 
+-  //Sort events
+-  events.sort(compareEvent)
++  start >>>= 0
++  end >>>= 0
++  thisStart >>>= 0
++  thisEnd >>>= 0
+ 
+-  //Initialize hull
+-  var minX = events[0].a[0] - (1 + Math.abs(events[0].a[0])) * Math.pow(2, -52)
+-  var hull = [ new PartialHull([minX, 1], [minX, 0], -1, [], [], [], []) ]
++  if (this === target) return 0
+ 
+-  //Process events in order
+-  var cells = []
+-  for(var i=0, numEvents=events.length; i<numEvents; ++i) {
+-    var event = events[i]
+-    var type = event.type
+-    if(type === EVENT_POINT) {
+-      addPoint(cells, hull, points, event.a, event.idx)
+-    } else if(type === EVENT_START) {
+-      splitHulls(hull, points, event)
+-    } else {
+-      mergeHulls(hull, points, event)
++  var x = thisEnd - thisStart
++  var y = end - start
++  var len = Math.min(x, y)
++
++  var thisCopy = this.slice(thisStart, thisEnd)
++  var targetCopy = target.slice(start, end)
++
++  for (var i = 0; i < len; ++i) {
++    if (thisCopy[i] !== targetCopy[i]) {
++      x = thisCopy[i]
++      y = targetCopy[i]
++      break
+     }
+   }
+ 
+-  //Return triangulation
+-  return cells
++  if (x < y) return -1
++  if (y < x) return 1
++  return 0
+ }
+ 
+-},{"binary-search-bounds":68,"robust-orientation":439}],67:[function(require,module,exports){
+-'use strict'
+-
+-var bsearch = require('binary-search-bounds')
++// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
++// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
++//
++// Arguments:
++// - buffer - a Buffer to search
++// - val - a string, Buffer, or number
++// - byteOffset - an index into `buffer`; will be clamped to an int32
++// - encoding - an optional encoding, relevant is val is a string
++// - dir - true for indexOf, false for lastIndexOf
++function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
++  // Empty buffer means no match
++  if (buffer.length === 0) return -1
++
++  // Normalize byteOffset
++  if (typeof byteOffset === 'string') {
++    encoding = byteOffset
++    byteOffset = 0
++  } else if (byteOffset > 0x7fffffff) {
++    byteOffset = 0x7fffffff
++  } else if (byteOffset < -0x80000000) {
++    byteOffset = -0x80000000
++  }
++  byteOffset = +byteOffset  // Coerce to Number.
++  if (isNaN(byteOffset)) {
++    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
++    byteOffset = dir ? 0 : (buffer.length - 1)
++  }
++
++  // Normalize byteOffset: negative offsets start from the end of the buffer
++  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
++  if (byteOffset >= buffer.length) {
++    if (dir) return -1
++    else byteOffset = buffer.length - 1
++  } else if (byteOffset < 0) {
++    if (dir) byteOffset = 0
++    else return -1
++  }
++
++  // Normalize val
++  if (typeof val === 'string') {
++    val = Buffer.from(val, encoding)
++  }
+ 
+-module.exports = createTriangulation
++  // Finally, search either indexOf (if dir is true) or lastIndexOf
++  if (Buffer.isBuffer(val)) {
++    // Special case: looking for empty string/buffer always fails
++    if (val.length === 0) {
++      return -1
++    }
++    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
++  } else if (typeof val === 'number') {
++    val = val & 0xFF // Search for a byte value [0-255]
++    if (Buffer.TYPED_ARRAY_SUPPORT &&
++        typeof Uint8Array.prototype.indexOf === 'function') {
++      if (dir) {
++        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
++      } else {
++        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
++      }
++    }
++    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
++  }
+ 
+-function Triangulation(stars, edges) {
+-  this.stars = stars
+-  this.edges = edges
++  throw new TypeError('val must be string, number or Buffer')
+ }
+ 
+-var proto = Triangulation.prototype
++function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
++  var indexSize = 1
++  var arrLength = arr.length
++  var valLength = val.length
+ 
+-function removePair(list, j, k) {
+-  for(var i=1, n=list.length; i<n; i+=2) {
+-    if(list[i-1] === j && list[i] === k) {
+-      list[i-1] = list[n-2]
+-      list[i] = list[n-1]
+-      list.length = n - 2
+-      return
++  if (encoding !== undefined) {
++    encoding = String(encoding).toLowerCase()
++    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
++        encoding === 'utf16le' || encoding === 'utf-16le') {
++      if (arr.length < 2 || val.length < 2) {
++        return -1
++      }
++      indexSize = 2
++      arrLength /= 2
++      valLength /= 2
++      byteOffset /= 2
+     }
+   }
+-}
+ 
+-proto.isConstraint = (function() {
+-  var e = [0,0]
+-  function compareLex(a, b) {
+-    return a[0] - b[0] || a[1] - b[1]
++  function read (buf, i) {
++    if (indexSize === 1) {
++      return buf[i]
++    } else {
++      return buf.readUInt16BE(i * indexSize)
++    }
+   }
+-  return function(i, j) {
+-    e[0] = Math.min(i,j)
+-    e[1] = Math.max(i,j)
+-    return bsearch.eq(this.edges, e, compareLex) >= 0
++
++  var i
++  if (dir) {
++    var foundIndex = -1
++    for (i = byteOffset; i < arrLength; i++) {
++      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
++        if (foundIndex === -1) foundIndex = i
++        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
++      } else {
++        if (foundIndex !== -1) i -= i - foundIndex
++        foundIndex = -1
++      }
++    }
++  } else {
++    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
++    for (i = byteOffset; i >= 0; i--) {
++      var found = true
++      for (var j = 0; j < valLength; j++) {
++        if (read(arr, i + j) !== read(val, j)) {
++          found = false
++          break
++        }
++      }
++      if (found) return i
++    }
+   }
+-})()
+ 
+-proto.removeTriangle = function(i, j, k) {
+-  var stars = this.stars
+-  removePair(stars[i], j, k)
+-  removePair(stars[j], k, i)
+-  removePair(stars[k], i, j)
++  return -1
+ }
+ 
+-proto.addTriangle = function(i, j, k) {
+-  var stars = this.stars
+-  stars[i].push(j, k)
+-  stars[j].push(k, i)
+-  stars[k].push(i, j)
++Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
++  return this.indexOf(val, byteOffset, encoding) !== -1
+ }
+ 
+-proto.opposite = function(j, i) {
+-  var list = this.stars[i]
+-  for(var k=1, n=list.length; k<n; k+=2) {
+-    if(list[k] === j) {
+-      return list[k-1]
+-    }
+-  }
+-  return -1
++Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
++  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
+ }
+ 
+-proto.flip = function(i, j) {
+-  var a = this.opposite(i, j)
+-  var b = this.opposite(j, i)
+-  this.removeTriangle(i, j, a)
+-  this.removeTriangle(j, i, b)
+-  this.addTriangle(i, b, a)
+-  this.addTriangle(j, a, b)
++Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
++  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
+ }
+ 
+-proto.edges = function() {
+-  var stars = this.stars
+-  var result = []
+-  for(var i=0, n=stars.length; i<n; ++i) {
+-    var list = stars[i]
+-    for(var j=0, m=list.length; j<m; j+=2) {
+-      result.push([list[j], list[j+1]])
++function hexWrite (buf, string, offset, length) {
++  offset = Number(offset) || 0
++  var remaining = buf.length - offset
++  if (!length) {
++    length = remaining
++  } else {
++    length = Number(length)
++    if (length > remaining) {
++      length = remaining
+     }
+   }
+-  return result
+-}
+ 
+-proto.cells = function() {
+-  var stars = this.stars
+-  var result = []
+-  for(var i=0, n=stars.length; i<n; ++i) {
+-    var list = stars[i]
+-    for(var j=0, m=list.length; j<m; j+=2) {
+-      var s = list[j]
+-      var t = list[j+1]
+-      if(i < Math.min(s, t)) {
+-        result.push([i, s, t])
+-      }
+-    }
++  // must be an even number of digits
++  var strLen = string.length
++  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
++
++  if (length > strLen / 2) {
++    length = strLen / 2
+   }
+-  return result
++  for (var i = 0; i < length; ++i) {
++    var parsed = parseInt(string.substr(i * 2, 2), 16)
++    if (isNaN(parsed)) return i
++    buf[offset + i] = parsed
++  }
++  return i
+ }
+ 
+-function createTriangulation(numVerts, edges) {
+-  var stars = new Array(numVerts)
+-  for(var i=0; i<numVerts; ++i) {
+-    stars[i] = []
+-  }
+-  return new Triangulation(stars, edges)
++function utf8Write (buf, string, offset, length) {
++  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+ }
+ 
+-},{"binary-search-bounds":68}],68:[function(require,module,exports){
+-"use strict"
++function asciiWrite (buf, string, offset, length) {
++  return blitBuffer(asciiToBytes(string), buf, offset, length)
++}
+ 
+-function compileSearch(funcName, predicate, reversed, extraArgs, earlyOut) {
+-  var code = [
+-    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
+-earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
+-";while(l<=h){\
+-var m=(l+h)>>>1,x=a[m]"]
+-  if(earlyOut) {
+-    if(predicate.indexOf("c") < 0) {
+-      code.push(";if(x===y){return m}else if(x<=y){")
++function latin1Write (buf, string, offset, length) {
++  return asciiWrite(buf, string, offset, length)
++}
++
++function base64Write (buf, string, offset, length) {
++  return blitBuffer(base64ToBytes(string), buf, offset, length)
++}
++
++function ucs2Write (buf, string, offset, length) {
++  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
++}
++
++Buffer.prototype.write = function write (string, offset, length, encoding) {
++  // Buffer#write(string)
++  if (offset === undefined) {
++    encoding = 'utf8'
++    length = this.length
++    offset = 0
++  // Buffer#write(string, encoding)
++  } else if (length === undefined && typeof offset === 'string') {
++    encoding = offset
++    length = this.length
++    offset = 0
++  // Buffer#write(string, offset[, length][, encoding])
++  } else if (isFinite(offset)) {
++    offset = offset | 0
++    if (isFinite(length)) {
++      length = length | 0
++      if (encoding === undefined) encoding = 'utf8'
+     } else {
+-      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
++      encoding = length
++      length = undefined
+     }
++  // legacy write(string, encoding, offset, length) - remove in v0.13
+   } else {
+-    code.push(";if(", predicate, "){i=m;")
+-  }
+-  if(reversed) {
+-    code.push("l=m+1}else{h=m-1}")
+-  } else {
+-    code.push("h=m-1}else{l=m+1}")
++    throw new Error(
++      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
++    )
+   }
+-  code.push("}")
+-  if(earlyOut) {
+-    code.push("return -1};")
+-  } else {
+-    code.push("return i};")
++
++  var remaining = this.length - offset
++  if (length === undefined || length > remaining) length = remaining
++
++  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
++    throw new RangeError('Attempt to write outside buffer bounds')
+   }
+-  return code.join("")
+-}
+ 
+-function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
+-  var result = new Function([
+-  compileSearch("A", "x" + predicate + "y", reversed, ["y"], earlyOut),
+-  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], earlyOut),
+-"function dispatchBsearch", suffix, "(a,y,c,l,h){\
+-if(typeof(c)==='function'){\
+-return P(a,(l===void 0)?0:l|0,(h===void 0)?a.length-1:h|0,y,c)\
+-}else{\
+-return A(a,(c===void 0)?0:c|0,(l===void 0)?a.length-1:l|0,y)\
+-}}\
+-return dispatchBsearch", suffix].join(""))
+-  return result()
+-}
++  if (!encoding) encoding = 'utf8'
+ 
+-module.exports = {
+-  ge: compileBoundsSearch(">=", false, "GE"),
+-  gt: compileBoundsSearch(">", false, "GT"),
+-  lt: compileBoundsSearch("<", true, "LT"),
+-  le: compileBoundsSearch("<=", true, "LE"),
+-  eq: compileBoundsSearch("-", true, "EQ", true)
+-}
++  var loweredCase = false
++  for (;;) {
++    switch (encoding) {
++      case 'hex':
++        return hexWrite(this, string, offset, length)
+ 
+-},{}],69:[function(require,module,exports){
+-"use strict"
++      case 'utf8':
++      case 'utf-8':
++        return utf8Write(this, string, offset, length)
+ 
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
+-var robustDiff = require("robust-subtract")
+-var robustScale = require("robust-scale")
++      case 'ascii':
++        return asciiWrite(this, string, offset, length)
+ 
+-var NUM_EXPAND = 6
++      case 'latin1':
++      case 'binary':
++        return latin1Write(this, string, offset, length)
+ 
+-function cofactor(m, c) {
+-  var result = new Array(m.length-1)
+-  for(var i=1; i<m.length; ++i) {
+-    var r = result[i-1] = new Array(m.length-1)
+-    for(var j=0,k=0; j<m.length; ++j) {
+-      if(j === c) {
+-        continue
+-      }
+-      r[k++] = m[i][j]
++      case 'base64':
++        // Warning: maxLength not taken into account in base64Write
++        return base64Write(this, string, offset, length)
++
++      case 'ucs2':
++      case 'ucs-2':
++      case 'utf16le':
++      case 'utf-16le':
++        return ucs2Write(this, string, offset, length)
++
++      default:
++        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
++        encoding = ('' + encoding).toLowerCase()
++        loweredCase = true
+     }
+   }
+-  return result
+ }
+ 
+-function matrix(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = new Array(n)
+-    for(var j=0; j<n; ++j) {
+-      result[i][j] = ["m", j, "[", (n-i-2), "]"].join("")
+-    }
++Buffer.prototype.toJSON = function toJSON () {
++  return {
++    type: 'Buffer',
++    data: Array.prototype.slice.call(this._arr || this, 0)
+   }
+-  return result
+ }
+ 
+-function generateSum(expr) {
+-  if(expr.length === 1) {
+-    return expr[0]
+-  } else if(expr.length === 2) {
+-    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++function base64Slice (buf, start, end) {
++  if (start === 0 && end === buf.length) {
++    return base64.fromByteArray(buf)
+   } else {
+-    var m = expr.length>>1
+-    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++    return base64.fromByteArray(buf.slice(start, end))
+   }
+ }
+ 
+-function makeProduct(a, b) {
+-  if(a.charAt(0) === "m") {
+-    if(b.charAt(0) === "w") {
+-      var toks = a.split("[")
+-      return ["w", b.substr(1), "m", toks[0].substr(1)].join("")
+-    } else {
+-      return ["prod(", a, ",", b, ")"].join("")
++function utf8Slice (buf, start, end) {
++  end = Math.min(buf.length, end)
++  var res = []
++
++  var i = start
++  while (i < end) {
++    var firstByte = buf[i]
++    var codePoint = null
++    var bytesPerSequence = (firstByte > 0xEF) ? 4
++      : (firstByte > 0xDF) ? 3
++      : (firstByte > 0xBF) ? 2
++      : 1
++
++    if (i + bytesPerSequence <= end) {
++      var secondByte, thirdByte, fourthByte, tempCodePoint
++
++      switch (bytesPerSequence) {
++        case 1:
++          if (firstByte < 0x80) {
++            codePoint = firstByte
++          }
++          break
++        case 2:
++          secondByte = buf[i + 1]
++          if ((secondByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
++            if (tempCodePoint > 0x7F) {
++              codePoint = tempCodePoint
++            }
++          }
++          break
++        case 3:
++          secondByte = buf[i + 1]
++          thirdByte = buf[i + 2]
++          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
++            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
++              codePoint = tempCodePoint
++            }
++          }
++          break
++        case 4:
++          secondByte = buf[i + 1]
++          thirdByte = buf[i + 2]
++          fourthByte = buf[i + 3]
++          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
++            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
++            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
++              codePoint = tempCodePoint
++            }
++          }
++      }
+     }
+-  } else {
+-    return makeProduct(b, a)
++
++    if (codePoint === null) {
++      // we did not generate a valid codePoint so insert a
++      // replacement char (U+FFFD) and advance only 1 byte
++      codePoint = 0xFFFD
++      bytesPerSequence = 1
++    } else if (codePoint > 0xFFFF) {
++      // encode to utf16 (surrogate pair dance)
++      codePoint -= 0x10000
++      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
++      codePoint = 0xDC00 | codePoint & 0x3FF
++    }
++
++    res.push(codePoint)
++    i += bytesPerSequence
+   }
++
++  return decodeCodePointsArray(res)
+ }
+ 
+-function sign(s) {
+-  if(s & 1 !== 0) {
+-    return "-"
++// Based on http://stackoverflow.com/a/22747272/680742, the browser with
++// the lowest limit is Chrome, with 0x10000 args.
++// We go 1 magnitude less, for safety
++var MAX_ARGUMENTS_LENGTH = 0x1000
++
++function decodeCodePointsArray (codePoints) {
++  var len = codePoints.length
++  if (len <= MAX_ARGUMENTS_LENGTH) {
++    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+   }
+-  return ""
+-}
+ 
+-function determinant(m) {
+-  if(m.length === 2) {
+-    return [["diff(", makeProduct(m[0][0], m[1][1]), ",", makeProduct(m[1][0], m[0][1]), ")"].join("")]
+-  } else {
+-    var expr = []
+-    for(var i=0; i<m.length; ++i) {
+-      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
+-    }
+-    return expr
++  // Decode in chunks to avoid "call stack size exceeded".
++  var res = ''
++  var i = 0
++  while (i < len) {
++    res += String.fromCharCode.apply(
++      String,
++      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
++    )
+   }
++  return res
+ }
+ 
+-function makeSquare(d, n) {
+-  var terms = []
+-  for(var i=0; i<n-2; ++i) {
+-    terms.push(["prod(m", d, "[", i, "],m", d, "[", i, "])"].join(""))
++function asciiSlice (buf, start, end) {
++  var ret = ''
++  end = Math.min(buf.length, end)
++
++  for (var i = start; i < end; ++i) {
++    ret += String.fromCharCode(buf[i] & 0x7F)
+   }
+-  return generateSum(terms)
++  return ret
+ }
+ 
+-function orientation(n) {
+-  var pos = []
+-  var neg = []
+-  var m = matrix(n)
+-  for(var i=0; i<n; ++i) {
+-    m[0][i] = "1"
+-    m[n-1][i] = "w"+i
+-  } 
+-  for(var i=0; i<n; ++i) {
+-    if((i&1)===0) {
+-      pos.push.apply(pos,determinant(cofactor(m, i)))
+-    } else {
+-      neg.push.apply(neg,determinant(cofactor(m, i)))
+-    }
+-  }
+-  var posExpr = generateSum(pos)
+-  var negExpr = generateSum(neg)
+-  var funcName = "exactInSphere" + n
+-  var funcArgs = []
+-  for(var i=0; i<n; ++i) {
+-    funcArgs.push("m" + i)
+-  }
+-  var code = ["function ", funcName, "(", funcArgs.join(), "){"]
+-  for(var i=0; i<n; ++i) {
+-    code.push("var w",i,"=",makeSquare(i,n),";")
+-    for(var j=0; j<n; ++j) {
+-      if(j !== i) {
+-        code.push("var w",i,"m",j,"=scale(w",i,",m",j,"[0]);")
+-      }
+-    }
++function latin1Slice (buf, start, end) {
++  var ret = ''
++  end = Math.min(buf.length, end)
++
++  for (var i = start; i < end; ++i) {
++    ret += String.fromCharCode(buf[i])
+   }
+-  code.push("var p=", posExpr, ",n=", negExpr, ",d=diff(p,n);return d[d.length-1];}return ", funcName)
+-  var proc = new Function("sum", "diff", "prod", "scale", code.join(""))
+-  return proc(robustSum, robustDiff, twoProduct, robustScale)
++  return ret
+ }
+ 
+-function inSphere0() { return 0 }
+-function inSphere1() { return 0 }
+-function inSphere2() { return 0 }
++function hexSlice (buf, start, end) {
++  var len = buf.length
+ 
+-var CACHED = [
+-  inSphere0,
+-  inSphere1,
+-  inSphere2
+-]
++  if (!start || start < 0) start = 0
++  if (!end || end < 0 || end > len) end = len
+ 
+-function slowInSphere(args) {
+-  var proc = CACHED[args.length]
+-  if(!proc) {
+-    proc = CACHED[args.length] = orientation(args.length)
++  var out = ''
++  for (var i = start; i < end; ++i) {
++    out += toHex(buf[i])
+   }
+-  return proc.apply(undefined, args)
++  return out
+ }
+ 
+-function generateInSphereTest() {
+-  while(CACHED.length <= NUM_EXPAND) {
+-    CACHED.push(orientation(CACHED.length))
++function utf16leSlice (buf, start, end) {
++  var bytes = buf.slice(start, end)
++  var res = ''
++  for (var i = 0; i < bytes.length; i += 2) {
++    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
+   }
+-  var args = []
+-  var procArgs = ["slow"]
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    args.push("a" + i)
+-    procArgs.push("o" + i)
++  return res
++}
++
++Buffer.prototype.slice = function slice (start, end) {
++  var len = this.length
++  start = ~~start
++  end = end === undefined ? len : ~~end
++
++  if (start < 0) {
++    start += len
++    if (start < 0) start = 0
++  } else if (start > len) {
++    start = len
+   }
+-  var code = [
+-    "function testInSphere(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
+-  ]
+-  for(var i=2; i<=NUM_EXPAND; ++i) {
+-    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
++
++  if (end < 0) {
++    end += len
++    if (end < 0) end = 0
++  } else if (end > len) {
++    end = len
+   }
+-  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return testInSphere")
+-  procArgs.push(code.join(""))
+ 
+-  var proc = Function.apply(undefined, procArgs)
++  if (end < start) end = start
+ 
+-  module.exports = proc.apply(undefined, [slowInSphere].concat(CACHED))
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    module.exports[i] = CACHED[i]
++  var newBuf
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    newBuf = this.subarray(start, end)
++    newBuf.__proto__ = Buffer.prototype
++  } else {
++    var sliceLen = end - start
++    newBuf = new Buffer(sliceLen, undefined)
++    for (var i = 0; i < sliceLen; ++i) {
++      newBuf[i] = this[i + start]
++    }
+   }
+-}
+-
+-generateInSphereTest()
+-},{"robust-scale":440,"robust-subtract":441,"robust-sum":442,"two-product":456}],70:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = cleanPSLG
++  return newBuf
++}
+ 
+-var UnionFind = require('union-find')
+-var boxIntersect = require('box-intersect')
+-var compareCell = require('compare-cell')
+-var segseg = require('robust-segment-intersect')
+-var rat = require('big-rat')
+-var ratCmp = require('big-rat/cmp')
+-var ratToFloat = require('big-rat/to-float')
+-var ratVec = require('rat-vec')
+-var nextafter = require('nextafter')
++/*
++ * Need to make sure that buffer isn't trying to write out of bounds.
++ */
++function checkOffset (offset, ext, length) {
++  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
++  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
++}
+ 
+-var solveIntersection = require('./lib/rat-seg-intersect')
++Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
+ 
+-//Bounds on a rational number when rounded to a float
+-function boundRat(r) {
+-  var f = ratToFloat(r)
+-  var cmp = ratCmp(rat(f), r)
+-  if(cmp < 0) {
+-    return [f, nextafter(f, Infinity)]
+-  } else if(cmp > 0) {
+-    return [nextafter(f, -Infinity), f]
+-  } else {
+-    return [f, f]
++  var val = this[offset]
++  var mul = 1
++  var i = 0
++  while (++i < byteLength && (mul *= 0x100)) {
++    val += this[offset + i] * mul
+   }
++
++  return val
+ }
+ 
+-//Convert a list of edges in a pslg to bounding boxes
+-function boundEdges(points, edges) {
+-  var bounds = new Array(edges.length)
+-  for(var i=0; i<edges.length; ++i) {
+-    var e = edges[i]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    bounds[i] = [
+-      Math.min(a[0], b[0]),
+-      Math.min(a[1], b[1]),
+-      Math.max(a[0], b[0]),
+-      Math.max(a[1], b[1]) ]
++Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    checkOffset(offset, byteLength, this.length)
+   }
+-  return bounds
+-}
+ 
+-//Convert a list of points into bounding boxes by duplicating coords
+-function boundPoints(points) {
+-  var bounds = new Array(points.length)
+-  for(var i=0; i<points.length; ++i) {
+-    var p = points[i]
+-    bounds[i] = [ p[0], p[1], p[0], p[1] ]
++  var val = this[offset + --byteLength]
++  var mul = 1
++  while (byteLength > 0 && (mul *= 0x100)) {
++    val += this[offset + --byteLength] * mul
+   }
+-  return bounds
++
++  return val
+ }
+ 
+-//Find all pairs of crossing edges in a pslg (given edge bounds)
+-function getCrossings(points, edges, edgeBounds) {
+-  var result = []
+-  boxIntersect(edgeBounds, function(i, j) {
+-    var e = edges[i]
+-    var f = edges[j]
+-    if(e[0] === f[0] || e[0] === f[1] ||
+-       e[1] === f[0] || e[1] === f[1]) {
+-         return
+-    }
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    var c = points[f[0]]
+-    var d = points[f[1]]
+-    if(segseg(a, b, c, d)) {
+-      result.push([i, j])
+-    }
+-  })
+-  return result
++Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 1, this.length)
++  return this[offset]
+ }
+ 
+-//Find all pairs of crossing vertices in a pslg (given edge/vert bounds)
+-function getTJunctions(points, edges, edgeBounds, vertBounds) {
+-  var result = []
+-  boxIntersect(edgeBounds, vertBounds, function(i, v) {
+-    var e = edges[i]
+-    if(e[0] === v || e[1] === v) {
+-      return
+-    }
+-    var p = points[v]
+-    var a = points[e[0]]
+-    var b = points[e[1]]
+-    if(segseg(a, b, p, p)) {
+-      result.push([i, v])
+-    }
+-  })
+-  return result
++Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  return this[offset] | (this[offset + 1] << 8)
+ }
+ 
++Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  return (this[offset] << 8) | this[offset + 1]
++}
+ 
+-//Cut edges along crossings/tjunctions
+-function cutEdges(floatPoints, edges, crossings, junctions, useColor) {
++Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-  //Convert crossings into tjunctions by constructing rational points
+-  var ratPoints = []
+-  for(var i=0; i<crossings.length; ++i) {
+-    var crossing = crossings[i]
+-    var e = crossing[0]
+-    var f = crossing[1]
+-    var ee = edges[e]
+-    var ef = edges[f]
+-    var x = solveIntersection(
+-      ratVec(floatPoints[ee[0]]),
+-      ratVec(floatPoints[ee[1]]),
+-      ratVec(floatPoints[ef[0]]),
+-      ratVec(floatPoints[ef[1]]))
+-    if(!x) {
+-      //Segments are parallel, should already be handled by t-junctions
+-      continue
+-    }
+-    var idx = ratPoints.length + floatPoints.length
+-    ratPoints.push(x)
+-    junctions.push([e, idx], [f, idx])
+-  }
++  return ((this[offset]) |
++      (this[offset + 1] << 8) |
++      (this[offset + 2] << 16)) +
++      (this[offset + 3] * 0x1000000)
++}
+ 
+-  //Sort tjunctions
+-  function getPoint(idx) {
+-    if(idx >= floatPoints.length) {
+-      return ratPoints[idx-floatPoints.length]
+-    }
+-    var p = floatPoints[idx]
+-    return [ rat(p[0]), rat(p[1]) ]
+-  }
+-  junctions.sort(function(a, b) {
+-    if(a[0] !== b[0]) {
+-      return a[0] - b[0]
+-    }
+-    var u = getPoint(a[1])
+-    var v = getPoint(b[1])
+-    return ratCmp(u[0], v[0]) || ratCmp(u[1], v[1])
+-  })
++Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-  //Split edges along junctions
+-  for(var i=junctions.length-1; i>=0; --i) {
+-    var junction = junctions[i]
+-    var e = junction[0]
++  return (this[offset] * 0x1000000) +
++    ((this[offset + 1] << 16) |
++    (this[offset + 2] << 8) |
++    this[offset + 3])
++}
+ 
+-    var edge = edges[e]
+-    var s = edge[0]
+-    var t = edge[1]
++Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
+ 
+-    //Check if edge is not lexicographically sorted
+-    var a = floatPoints[s]
+-    var b = floatPoints[t]
+-    if(((a[0] - b[0]) || (a[1] - b[1])) < 0) {
+-      var tmp = s
+-      s = t
+-      t = tmp
+-    }
++  var val = this[offset]
++  var mul = 1
++  var i = 0
++  while (++i < byteLength && (mul *= 0x100)) {
++    val += this[offset + i] * mul
++  }
++  mul *= 0x80
+ 
+-    //Split leading edge
+-    edge[0] = s
+-    var last = edge[1] = junction[1]
++  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+ 
+-    //If we are grouping edges by color, remember to track data
+-    var color
+-    if(useColor) {
+-      color = edge[2]
+-    }
++  return val
++}
+ 
+-    //Split other edges
+-    while(i > 0 && junctions[i-1][0] === e) {
+-      var junction = junctions[--i]
+-      var next = junction[1]
+-      if(useColor) {
+-        edges.push([last, next, color])
+-      } else {
+-        edges.push([last, next])
+-      }
+-      last = next
+-    }
++Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) checkOffset(offset, byteLength, this.length)
+ 
+-    //Add final edge
+-    if(useColor) {
+-      edges.push([last, t, color])
+-    } else {
+-      edges.push([last, t])
+-    }
++  var i = byteLength
++  var mul = 1
++  var val = this[offset + --i]
++  while (i > 0 && (mul *= 0x100)) {
++    val += this[offset + --i] * mul
+   }
++  mul *= 0x80
+ 
+-  //Return constructed rational points
+-  return ratPoints
++  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
++
++  return val
+ }
+ 
+-//Merge overlapping points
+-function dedupPoints(floatPoints, ratPoints, floatBounds) {
+-  var numPoints = floatPoints.length + ratPoints.length
+-  var uf        = new UnionFind(numPoints)
++Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 1, this.length)
++  if (!(this[offset] & 0x80)) return (this[offset])
++  return ((0xff - this[offset] + 1) * -1)
++}
+ 
+-  //Compute rational bounds
+-  var bounds = floatBounds
+-  for(var i=0; i<ratPoints.length; ++i) {
+-    var p = ratPoints[i]
+-    var xb = boundRat(p[0])
+-    var yb = boundRat(p[1])
+-    bounds.push([ xb[0], yb[0], xb[1], yb[1] ])
+-    floatPoints.push([ ratToFloat(p[0]), ratToFloat(p[1]) ])
+-  }
++Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  var val = this[offset] | (this[offset + 1] << 8)
++  return (val & 0x8000) ? val | 0xFFFF0000 : val
++}
+ 
+-  //Link all points with over lapping boxes
+-  boxIntersect(bounds, function(i, j) {
+-    uf.link(i, j)
+-  })
++Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 2, this.length)
++  var val = this[offset + 1] | (this[offset] << 8)
++  return (val & 0x8000) ? val | 0xFFFF0000 : val
++}
+ 
+-  //Call find on each point to get a relabeling
+-  var ptr = 0
+-  var noDupes = true
+-  var labels = new Array(numPoints)
+-  for(var i=0; i<numPoints; ++i) {
+-    var j = uf.find(i)
+-    if(j === i) {
+-      //If not a duplicate, then don't bother
+-      labels[i] = ptr
+-      floatPoints[ptr++] = floatPoints[i]
+-    } else {
+-      //Clear no-dupes flag, zero out label
+-      noDupes = false
+-      labels[i] = -1
+-    }
+-  }
+-  floatPoints.length = ptr
++Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-  //If no duplicates, return null to signal termination
+-  if(noDupes) {
+-    return null
+-  }
++  return (this[offset]) |
++    (this[offset + 1] << 8) |
++    (this[offset + 2] << 16) |
++    (this[offset + 3] << 24)
++}
+ 
+-  //Do a second pass to fix up missing labels
+-  for(var i=0; i<numPoints; ++i) {
+-    if(labels[i] < 0) {
+-      labels[i] = labels[uf.find(i)]
+-    }
+-  }
++Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
+ 
+-  //Return resulting union-find data structure
+-  return labels
++  return (this[offset] << 24) |
++    (this[offset + 1] << 16) |
++    (this[offset + 2] << 8) |
++    (this[offset + 3])
+ }
+ 
+-function compareLex2(a,b) { return (a[0]-b[0]) || (a[1]-b[1]) }
+-function compareLex3(a,b) {
+-  var d = (a[0] - b[0]) || (a[1] - b[1])
+-  if(d) {
+-    return d
+-  }
+-  if(a[2] < b[2]) {
+-    return -1
+-  } else if(a[2] > b[2]) {
+-    return 1
+-  }
+-  return 0
++Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
++  return ieee754.read(this, offset, true, 23, 4)
+ }
+ 
+-//Remove duplicate edge labels
+-function dedupEdges(edges, labels, useColor) {
+-  if(edges.length === 0) {
+-    return
+-  }
+-  if(labels) {
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      var a = labels[e[0]]
+-      var b = labels[e[1]]
+-      e[0] = Math.min(a, b)
+-      e[1] = Math.max(a, b)
+-    }
+-  } else {
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      var a = e[0]
+-      var b = e[1]
+-      e[0] = Math.min(a, b)
+-      e[1] = Math.max(a, b)
+-    }
+-  }
+-  if(useColor) {
+-    edges.sort(compareLex3)
+-  } else {
+-    edges.sort(compareLex2)
+-  }
+-  var ptr = 1
+-  for(var i=1; i<edges.length; ++i) {
+-    var prev = edges[i-1]
+-    var next = edges[i]
+-    if(next[0] === prev[0] && next[1] === prev[1] &&
+-      (!useColor || next[2] === prev[2])) {
+-      continue
+-    }
+-    edges[ptr++] = next
+-  }
+-  edges.length = ptr
++Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 4, this.length)
++  return ieee754.read(this, offset, false, 23, 4)
+ }
+ 
+-//Repeat until convergence
+-function snapRound(points, edges, useColor) {
++Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 8, this.length)
++  return ieee754.read(this, offset, true, 52, 8)
++}
+ 
+-  // 1. find edge crossings
+-  var edgeBounds = boundEdges(points, edges)
+-  var crossings  = getCrossings(points, edges, edgeBounds)
++Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
++  if (!noAssert) checkOffset(offset, 8, this.length)
++  return ieee754.read(this, offset, false, 52, 8)
++}
+ 
+-  // 2. find t-junctions
+-  var vertBounds = boundPoints(points)
+-  var tjunctions = getTJunctions(points, edges, edgeBounds, vertBounds)
++function checkInt (buf, value, offset, ext, max, min) {
++  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
++  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
++  if (offset + ext > buf.length) throw new RangeError('Index out of range')
++}
+ 
+-  // 3. cut edges, construct rational points
+-  var ratPoints  = cutEdges(points, edges, crossings, tjunctions, useColor)
++Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    var maxBytes = Math.pow(2, 8 * byteLength) - 1
++    checkInt(this, value, offset, byteLength, maxBytes, 0)
++  }
+ 
+-  // 4. dedupe verts
+-  var labels     = dedupPoints(points, ratPoints, vertBounds)
++  var mul = 1
++  var i = 0
++  this[offset] = value & 0xFF
++  while (++i < byteLength && (mul *= 0x100)) {
++    this[offset + i] = (value / mul) & 0xFF
++  }
+ 
+-  // 6. dedupe edges
+-  dedupEdges(edges, labels, useColor)
++  return offset + byteLength
++}
+ 
+-  // 5. check termination
+-  if(!labels) {
+-    return (crossings.length > 0 || tjunctions.length > 0)
++Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  byteLength = byteLength | 0
++  if (!noAssert) {
++    var maxBytes = Math.pow(2, 8 * byteLength) - 1
++    checkInt(this, value, offset, byteLength, maxBytes, 0)
+   }
+ 
+-  // More iterations necessary
+-  return true
++  var i = byteLength - 1
++  var mul = 1
++  this[offset + i] = value & 0xFF
++  while (--i >= 0 && (mul *= 0x100)) {
++    this[offset + i] = (value / mul) & 0xFF
++  }
++
++  return offset + byteLength
+ }
+ 
+-//Main loop, runs PSLG clean up until completion
+-function cleanPSLG(points, edges, colors) {
+-  var modified = false
++Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
++  this[offset] = (value & 0xff)
++  return offset + 1
++}
+ 
+-  //If using colors, augment edges with color data
+-  var prevEdges
+-  if(colors) {
+-    prevEdges = edges
+-    var augEdges = new Array(edges.length)
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      augEdges[i] = [e[0], e[1], colors[i]]
+-    }
+-    edges = augEdges
++function objectWriteUInt16 (buf, value, offset, littleEndian) {
++  if (value < 0) value = 0xffff + value + 1
++  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
++    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
++      (littleEndian ? i : 1 - i) * 8
+   }
++}
+ 
+-  //Run snap rounding until convergence
+-  while(snapRound(points, edges, !!colors)) {
+-    modified = true
++Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++  } else {
++    objectWriteUInt16(this, value, offset, true)
+   }
++  return offset + 2
++}
+ 
+-  //Strip color tags
+-  if(!!colors && modified) {
+-    prevEdges.length = 0
+-    colors.length = 0
+-    for(var i=0; i<edges.length; ++i) {
+-      var e = edges[i]
+-      prevEdges.push([e[0], e[1]])
+-      colors.push(e[2])
+-    }
++Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 8)
++    this[offset + 1] = (value & 0xff)
++  } else {
++    objectWriteUInt16(this, value, offset, false)
+   }
++  return offset + 2
++}
+ 
+-  return modified
++function objectWriteUInt32 (buf, value, offset, littleEndian) {
++  if (value < 0) value = 0xffffffff + value + 1
++  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
++    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
++  }
+ }
+ 
+-},{"./lib/rat-seg-intersect":71,"big-rat":75,"big-rat/cmp":73,"big-rat/to-float":88,"box-intersect":89,"compare-cell":107,"nextafter":97,"rat-vec":99,"robust-segment-intersect":102,"union-find":103}],71:[function(require,module,exports){
+-'use strict'
++Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset + 3] = (value >>> 24)
++    this[offset + 2] = (value >>> 16)
++    this[offset + 1] = (value >>> 8)
++    this[offset] = (value & 0xff)
++  } else {
++    objectWriteUInt32(this, value, offset, true)
++  }
++  return offset + 4
++}
+ 
+-//TODO: Move this to a separate module
++Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 24)
++    this[offset + 1] = (value >>> 16)
++    this[offset + 2] = (value >>> 8)
++    this[offset + 3] = (value & 0xff)
++  } else {
++    objectWriteUInt32(this, value, offset, false)
++  }
++  return offset + 4
++}
+ 
+-module.exports = solveIntersection
++Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) {
++    var limit = Math.pow(2, 8 * byteLength - 1)
+ 
+-var ratMul = require('big-rat/mul')
+-var ratDiv = require('big-rat/div')
+-var ratSub = require('big-rat/sub')
+-var ratSign = require('big-rat/sign')
+-var rvSub = require('rat-vec/sub')
+-var rvAdd = require('rat-vec/add')
+-var rvMuls = require('rat-vec/muls')
++    checkInt(this, value, offset, byteLength, limit - 1, -limit)
++  }
+ 
+-var toFloat = require('big-rat/to-float')
++  var i = 0
++  var mul = 1
++  var sub = 0
++  this[offset] = value & 0xFF
++  while (++i < byteLength && (mul *= 0x100)) {
++    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
++      sub = 1
++    }
++    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
++  }
+ 
+-function ratPerp(a, b) {
+-  return ratSub(ratMul(a[0], b[1]), ratMul(a[1], b[0]))
++  return offset + byteLength
+ }
+ 
+-//Solve for intersection
+-//  x = a + t (b-a)
+-//  (x - c) ^ (d-c) = 0
+-//  (t * (b-a) + (a-c) ) ^ (d-c) = 0
+-//  t * (b-a)^(d-c) = (d-c)^(a-c)
+-//  t = (d-c)^(a-c) / (b-a)^(d-c)
+-
+-function solveIntersection(a, b, c, d) {
+-  var ba = rvSub(b, a)
+-  var dc = rvSub(d, c)
+-
+-  var baXdc = ratPerp(ba, dc)
++Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) {
++    var limit = Math.pow(2, 8 * byteLength - 1)
+ 
+-  if(ratSign(baXdc) === 0) {
+-    return null
++    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+   }
+ 
+-  var ac = rvSub(a, c)
+-  var dcXac = ratPerp(dc, ac)
+-
+-  var t = ratDiv(dcXac, baXdc)
++  var i = byteLength - 1
++  var mul = 1
++  var sub = 0
++  this[offset + i] = value & 0xFF
++  while (--i >= 0 && (mul *= 0x100)) {
++    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
++      sub = 1
++    }
++    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
++  }
+ 
+-  return rvAdd(a, rvMuls(ba, t))
++  return offset + byteLength
+ }
+ 
+-},{"big-rat/div":74,"big-rat/mul":84,"big-rat/sign":86,"big-rat/sub":87,"big-rat/to-float":88,"rat-vec/add":98,"rat-vec/muls":100,"rat-vec/sub":101}],72:[function(require,module,exports){
+-'use strict'
+-
+-var rationalize = require('./lib/rationalize')
+-
+-module.exports = add
+-
+-function add(a, b) {
+-  return rationalize(
+-    a[0].mul(b[1]).add(b[0].mul(a[1])),
+-    a[1].mul(b[1]))
++Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
++  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
++  if (value < 0) value = 0xff + value + 1
++  this[offset] = (value & 0xff)
++  return offset + 1
+ }
+ 
+-},{"./lib/rationalize":82}],73:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = cmp
+-
+-function cmp(a, b) {
+-    return a[0].mul(b[1]).cmp(b[0].mul(a[1]))
++Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++  } else {
++    objectWriteUInt16(this, value, offset, true)
++  }
++  return offset + 2
+ }
+ 
+-},{}],74:[function(require,module,exports){
+-'use strict'
+-
+-var rationalize = require('./lib/rationalize')
+-
+-module.exports = div
+-
+-function div(a, b) {
+-  return rationalize(a[0].mul(b[1]), a[1].mul(b[0]))
++Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 8)
++    this[offset + 1] = (value & 0xff)
++  } else {
++    objectWriteUInt16(this, value, offset, false)
++  }
++  return offset + 2
+ }
+ 
+-},{"./lib/rationalize":82}],75:[function(require,module,exports){
+-'use strict'
+-
+-var isRat = require('./is-rat')
+-var isBN = require('./lib/is-bn')
+-var num2bn = require('./lib/num-to-bn')
+-var str2bn = require('./lib/str-to-bn')
+-var rationalize = require('./lib/rationalize')
+-var div = require('./div')
+-
+-module.exports = makeRational
+-
+-function makeRational(numer, denom) {
+-  if(isRat(numer)) {
+-    if(denom) {
+-      return div(numer, makeRational(denom))
+-    }
+-    return [numer[0].clone(), numer[1].clone()]
+-  }
+-  var shift = 0
+-  var a, b
+-  if(isBN(numer)) {
+-    a = numer.clone()
+-  } else if(typeof numer === 'string') {
+-    a = str2bn(numer)
+-  } else if(numer === 0) {
+-    return [num2bn(0), num2bn(1)]
+-  } else if(numer === Math.floor(numer)) {
+-    a = num2bn(numer)
++Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value & 0xff)
++    this[offset + 1] = (value >>> 8)
++    this[offset + 2] = (value >>> 16)
++    this[offset + 3] = (value >>> 24)
+   } else {
+-    while(numer !== Math.floor(numer)) {
+-      numer = numer * Math.pow(2, 256)
+-      shift -= 256
+-    }
+-    a = num2bn(numer)
++    objectWriteUInt32(this, value, offset, true)
+   }
+-  if(isRat(denom)) {
+-    a.mul(denom[1])
+-    b = denom[0].clone()
+-  } else if(isBN(denom)) {
+-    b = denom.clone()
+-  } else if(typeof denom === 'string') {
+-    b = str2bn(denom)
+-  } else if(!denom) {
+-    b = num2bn(1)
+-  } else if(denom === Math.floor(denom)) {
+-    b = num2bn(denom)
++  return offset + 4
++}
++
++Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
++  value = +value
++  offset = offset | 0
++  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
++  if (value < 0) value = 0xffffffff + value + 1
++  if (Buffer.TYPED_ARRAY_SUPPORT) {
++    this[offset] = (value >>> 24)
++    this[offset + 1] = (value >>> 16)
++    this[offset + 2] = (value >>> 8)
++    this[offset + 3] = (value & 0xff)
+   } else {
+-    while(denom !== Math.floor(denom)) {
+-      denom = denom * Math.pow(2, 256)
+-      shift += 256
+-    }
+-    b = num2bn(denom)
+-  }
+-  if(shift > 0) {
+-    a = a.shln(shift)
+-  } else if(shift < 0) {
+-    b = b.shln(-shift)
++    objectWriteUInt32(this, value, offset, false)
+   }
+-  return rationalize(a, b)
++  return offset + 4
+ }
+ 
+-},{"./div":74,"./is-rat":76,"./lib/is-bn":80,"./lib/num-to-bn":81,"./lib/rationalize":82,"./lib/str-to-bn":83}],76:[function(require,module,exports){
+-'use strict'
+-
+-var isBN = require('./lib/is-bn')
++function checkIEEE754 (buf, value, offset, ext, max, min) {
++  if (offset + ext > buf.length) throw new RangeError('Index out of range')
++  if (offset < 0) throw new RangeError('Index out of range')
++}
+ 
+-module.exports = isRat
++function writeFloat (buf, value, offset, littleEndian, noAssert) {
++  if (!noAssert) {
++    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
++  }
++  ieee754.write(buf, value, offset, littleEndian, 23, 4)
++  return offset + 4
++}
+ 
+-function isRat(x) {
+-  return Array.isArray(x) && x.length === 2 && isBN(x[0]) && isBN(x[1])
++Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
++  return writeFloat(this, value, offset, true, noAssert)
+ }
+ 
+-},{"./lib/is-bn":80}],77:[function(require,module,exports){
+-'use strict'
++Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
++  return writeFloat(this, value, offset, false, noAssert)
++}
+ 
+-var bn = require('bn.js')
++function writeDouble (buf, value, offset, littleEndian, noAssert) {
++  if (!noAssert) {
++    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
++  }
++  ieee754.write(buf, value, offset, littleEndian, 52, 8)
++  return offset + 8
++}
+ 
+-module.exports = sign
++Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
++  return writeDouble(this, value, offset, true, noAssert)
++}
+ 
+-function sign(x) {
+-  return x.cmp(new bn(0))
++Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
++  return writeDouble(this, value, offset, false, noAssert)
+ }
+ 
+-},{"bn.js":85}],78:[function(require,module,exports){
+-'use strict'
++// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
++Buffer.prototype.copy = function copy (target, targetStart, start, end) {
++  if (!start) start = 0
++  if (!end && end !== 0) end = this.length
++  if (targetStart >= target.length) targetStart = target.length
++  if (!targetStart) targetStart = 0
++  if (end > 0 && end < start) end = start
+ 
+-module.exports = bn2num
++  // Copy 0 bytes; we're done
++  if (end === start) return 0
++  if (target.length === 0 || this.length === 0) return 0
+ 
+-//TODO: Make this better
+-function bn2num(b) {
+-  var l = b.length
+-  var words = b.words
+-  var out = 0
+-  if (l === 1) {
+-    out = words[0]
+-  } else if (l === 2) {
+-    out = words[0] + (words[1] * 0x4000000)
+-  } else {
+-    var out = 0
+-    for (var i = 0; i < l; i++) {
+-      var w = words[i]
+-      out += w * Math.pow(0x4000000, i)
+-    }
++  // Fatal error conditions
++  if (targetStart < 0) {
++    throw new RangeError('targetStart out of bounds')
+   }
+-  return b.sign ? -out : out
+-}
+-
+-},{}],79:[function(require,module,exports){
+-'use strict'
++  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
++  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+ 
+-var db = require('double-bits')
+-var ctz = require('bit-twiddle').countTrailingZeros
++  // Are we oob?
++  if (end > this.length) end = this.length
++  if (target.length - targetStart < end - start) {
++    end = target.length - targetStart + start
++  }
+ 
+-module.exports = ctzNumber
++  var len = end - start
++  var i
+ 
+-//Counts the number of trailing zeros
+-function ctzNumber(x) {
+-  var l = ctz(db.lo(x))
+-  if(l < 32) {
+-    return l
+-  }
+-  var h = ctz(db.hi(x))
+-  if(h > 20) {
+-    return 52
++  if (this === target && start < targetStart && targetStart < end) {
++    // descending copy from end
++    for (i = len - 1; i >= 0; --i) {
++      target[i + targetStart] = this[i + start]
++    }
++  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
++    // ascending copy from start
++    for (i = 0; i < len; ++i) {
++      target[i + targetStart] = this[i + start]
++    }
++  } else {
++    Uint8Array.prototype.set.call(
++      target,
++      this.subarray(start, start + len),
++      targetStart
++    )
+   }
+-  return h + 32
+-}
+ 
+-},{"bit-twiddle":51,"double-bits":96}],80:[function(require,module,exports){
+-'use strict'
+-
+-var BN = require('bn.js')
++  return len
++}
+ 
+-module.exports = isBN
++// Usage:
++//    buffer.fill(number[, offset[, end]])
++//    buffer.fill(buffer[, offset[, end]])
++//    buffer.fill(string[, offset[, end]][, encoding])
++Buffer.prototype.fill = function fill (val, start, end, encoding) {
++  // Handle string cases:
++  if (typeof val === 'string') {
++    if (typeof start === 'string') {
++      encoding = start
++      start = 0
++      end = this.length
++    } else if (typeof end === 'string') {
++      encoding = end
++      end = this.length
++    }
++    if (val.length === 1) {
++      var code = val.charCodeAt(0)
++      if (code < 256) {
++        val = code
++      }
++    }
++    if (encoding !== undefined && typeof encoding !== 'string') {
++      throw new TypeError('encoding must be a string')
++    }
++    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
++      throw new TypeError('Unknown encoding: ' + encoding)
++    }
++  } else if (typeof val === 'number') {
++    val = val & 255
++  }
+ 
+-//Test if x is a bignumber
+-//FIXME: obviously this is the wrong way to do it
+-function isBN(x) {
+-  return x && typeof x === 'object' && Boolean(x.words)
+-}
++  // Invalid ranges are not set to a default, so can range check early.
++  if (start < 0 || this.length < start || this.length < end) {
++    throw new RangeError('Out of range index')
++  }
+ 
+-},{"bn.js":85}],81:[function(require,module,exports){
+-'use strict'
++  if (end <= start) {
++    return this
++  }
+ 
+-var BN = require('bn.js')
+-var db = require('double-bits')
++  start = start >>> 0
++  end = end === undefined ? this.length : end >>> 0
+ 
+-module.exports = num2bn
++  if (!val) val = 0
+ 
+-function num2bn(x) {
+-  var e = db.exponent(x)
+-  if(e < 52) {
+-    return new BN(x)
++  var i
++  if (typeof val === 'number') {
++    for (i = start; i < end; ++i) {
++      this[i] = val
++    }
+   } else {
+-    return (new BN(x * Math.pow(2, 52-e))).shln(e-52)
++    var bytes = Buffer.isBuffer(val)
++      ? val
++      : utf8ToBytes(new Buffer(val, encoding).toString())
++    var len = bytes.length
++    for (i = 0; i < end - start; ++i) {
++      this[i + start] = bytes[i % len]
++    }
+   }
+-}
+ 
+-},{"bn.js":85,"double-bits":96}],82:[function(require,module,exports){
+-'use strict'
++  return this
++}
+ 
+-var num2bn = require('./num-to-bn')
+-var sign = require('./bn-sign')
++// HELPER FUNCTIONS
++// ================
+ 
+-module.exports = rationalize
++var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
+ 
+-function rationalize(numer, denom) {
+-  var snumer = sign(numer)
+-  var sdenom = sign(denom)
+-  if(snumer === 0) {
+-    return [num2bn(0), num2bn(1)]
+-  }
+-  if(sdenom === 0) {
+-    return [num2bn(0), num2bn(0)]
+-  }
+-  if(sdenom < 0) {
+-    numer = numer.neg()
+-    denom = denom.neg()
+-  }
+-  var d = numer.gcd(denom)
+-  if(d.cmpn(1)) {
+-    return [ numer.div(d), denom.div(d) ]
++function base64clean (str) {
++  // Node strips out invalid characters like \n and \t from the string, base64-js does not
++  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
++  // Node converts strings with length < 2 to ''
++  if (str.length < 2) return ''
++  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
++  while (str.length % 4 !== 0) {
++    str = str + '='
+   }
+-  return [ numer, denom ]
++  return str
+ }
+ 
+-},{"./bn-sign":77,"./num-to-bn":81}],83:[function(require,module,exports){
+-'use strict'
++function stringtrim (str) {
++  if (str.trim) return str.trim()
++  return str.replace(/^\s+|\s+$/g, '')
++}
+ 
+-var BN = require('bn.js')
++function toHex (n) {
++  if (n < 16) return '0' + n.toString(16)
++  return n.toString(16)
++}
+ 
+-module.exports = str2BN
++function utf8ToBytes (string, units) {
++  units = units || Infinity
++  var codePoint
++  var length = string.length
++  var leadSurrogate = null
++  var bytes = []
+ 
+-function str2BN(x) {
+-  return new BN(x)
+-}
++  for (var i = 0; i < length; ++i) {
++    codePoint = string.charCodeAt(i)
+ 
+-},{"bn.js":85}],84:[function(require,module,exports){
+-'use strict'
++    // is surrogate component
++    if (codePoint > 0xD7FF && codePoint < 0xE000) {
++      // last char was a lead
++      if (!leadSurrogate) {
++        // no lead yet
++        if (codePoint > 0xDBFF) {
++          // unexpected trail
++          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++          continue
++        } else if (i + 1 === length) {
++          // unpaired lead
++          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++          continue
++        }
+ 
+-var rationalize = require('./lib/rationalize')
++        // valid lead
++        leadSurrogate = codePoint
+ 
+-module.exports = mul
++        continue
++      }
+ 
+-function mul(a, b) {
+-  return rationalize(a[0].mul(b[0]), a[1].mul(b[1]))
+-}
++      // 2 leads in a row
++      if (codePoint < 0xDC00) {
++        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++        leadSurrogate = codePoint
++        continue
++      }
+ 
+-},{"./lib/rationalize":82}],85:[function(require,module,exports){
+-(function (module, exports) {
++      // valid surrogate pair
++      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
++    } else if (leadSurrogate) {
++      // valid bmp char, but last char was a lead
++      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
++    }
+ 
+-'use strict';
++    leadSurrogate = null
+ 
+-// Utils
++    // encode utf8
++    if (codePoint < 0x80) {
++      if ((units -= 1) < 0) break
++      bytes.push(codePoint)
++    } else if (codePoint < 0x800) {
++      if ((units -= 2) < 0) break
++      bytes.push(
++        codePoint >> 0x6 | 0xC0,
++        codePoint & 0x3F | 0x80
++      )
++    } else if (codePoint < 0x10000) {
++      if ((units -= 3) < 0) break
++      bytes.push(
++        codePoint >> 0xC | 0xE0,
++        codePoint >> 0x6 & 0x3F | 0x80,
++        codePoint & 0x3F | 0x80
++      )
++    } else if (codePoint < 0x110000) {
++      if ((units -= 4) < 0) break
++      bytes.push(
++        codePoint >> 0x12 | 0xF0,
++        codePoint >> 0xC & 0x3F | 0x80,
++        codePoint >> 0x6 & 0x3F | 0x80,
++        codePoint & 0x3F | 0x80
++      )
++    } else {
++      throw new Error('Invalid code point')
++    }
++  }
+ 
+-function assert(val, msg) {
+-  if (!val)
+-    throw new Error(msg || 'Assertion failed');
++  return bytes
+ }
+ 
+-// Could use `inherits` module, but don't want to move from single file
+-// architecture yet.
+-function inherits(ctor, superCtor) {
+-  ctor.super_ = superCtor;
+-  var TempCtor = function () {};
+-  TempCtor.prototype = superCtor.prototype;
+-  ctor.prototype = new TempCtor();
+-  ctor.prototype.constructor = ctor;
++function asciiToBytes (str) {
++  var byteArray = []
++  for (var i = 0; i < str.length; ++i) {
++    // Node's code seems to be doing this and not & 0x7F..
++    byteArray.push(str.charCodeAt(i) & 0xFF)
++  }
++  return byteArray
+ }
+ 
+-// BN
++function utf16leToBytes (str, units) {
++  var c, hi, lo
++  var byteArray = []
++  for (var i = 0; i < str.length; ++i) {
++    if ((units -= 2) < 0) break
+ 
+-function BN(number, base, endian) {
+-  // May be `new BN(bn)` ?
+-  if (number !== null &&
+-      typeof number === 'object' &&
+-      Array.isArray(number.words)) {
+-    return number;
++    c = str.charCodeAt(i)
++    hi = c >> 8
++    lo = c % 256
++    byteArray.push(lo)
++    byteArray.push(hi)
+   }
+ 
+-  this.sign = false;
+-  this.words = null;
+-  this.length = 0;
++  return byteArray
++}
+ 
+-  // Reduction context
+-  this.red = null;
++function base64ToBytes (str) {
++  return base64.toByteArray(base64clean(str))
++}
+ 
+-  if (base === 'le' || base === 'be') {
+-    endian = base;
+-    base = 10;
++function blitBuffer (src, dst, offset, length) {
++  for (var i = 0; i < length; ++i) {
++    if ((i + offset >= dst.length) || (i >= src.length)) break
++    dst[i + offset] = src[i]
+   }
++  return i
++}
+ 
+-  if (number !== null)
+-    this._init(number || 0, base || 10, endian || 'be');
++function isnan (val) {
++  return val !== val // eslint-disable-line no-self-compare
+ }
+-if (typeof module === 'object')
+-  module.exports = BN;
+-else
+-  exports.BN = BN;
+ 
+-BN.BN = BN;
+-BN.wordSize = 26;
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"base64-js":60,"ieee754":223,"isarray":61}],60:[function(require,module,exports){
++'use strict'
+ 
+-BN.prototype._init = function init(number, base, endian) {
+-  if (typeof number === 'number') {
+-    return this._initNumber(number, base, endian);
+-  } else if (typeof number === 'object') {
+-    return this._initArray(number, base, endian);
++exports.toByteArray = toByteArray
++exports.fromByteArray = fromByteArray
++
++var lookup = []
++var revLookup = []
++var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
++
++function init () {
++  var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
++  for (var i = 0, len = code.length; i < len; ++i) {
++    lookup[i] = code[i]
++    revLookup[code.charCodeAt(i)] = i
+   }
+-  if (base === 'hex')
+-    base = 16;
+-  assert(base === (base | 0) && base >= 2 && base <= 36);
+ 
+-  number = number.toString().replace(/\s+/g, '');
+-  var start = 0;
+-  if (number[0] === '-')
+-    start++;
++  revLookup['-'.charCodeAt(0)] = 62
++  revLookup['_'.charCodeAt(0)] = 63
++}
+ 
+-  if (base === 16)
+-    this._parseHex(number, start);
+-  else
+-    this._parseBase(number, base, start);
++init()
+ 
+-  if (number[0] === '-')
+-    this.sign = true;
++function toByteArray (b64) {
++  var i, j, l, tmp, placeHolders, arr
++  var len = b64.length
+ 
+-  this.strip();
++  if (len % 4 > 0) {
++    throw new Error('Invalid string. Length must be a multiple of 4')
++  }
+ 
+-  if (endian !== 'le')
+-    return;
++  // the number of equal signs (place holders)
++  // if there are two placeholders, than the two characters before it
++  // represent one byte
++  // if there is only one, then the three characters before it represent 2 bytes
++  // this is just a cheap hack to not do indexOf twice
++  placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
+ 
+-  this._initArray(this.toArray(), base, endian);
+-};
++  // base64 is 4/3 + up to two characters of the original data
++  arr = new Arr(len * 3 / 4 - placeHolders)
+ 
+-BN.prototype._initNumber = function _initNumber(number, base, endian) {
+-  if (number < 0) {
+-    this.sign = true;
+-    number = -number;
++  // if there are placeholders, only get up to the last complete 4 chars
++  l = placeHolders > 0 ? len - 4 : len
++
++  var L = 0
++
++  for (i = 0, j = 0; i < l; i += 4, j += 3) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
++    arr[L++] = (tmp >> 16) & 0xFF
++    arr[L++] = (tmp >> 8) & 0xFF
++    arr[L++] = tmp & 0xFF
+   }
+-  if (number < 0x4000000) {
+-    this.words = [ number & 0x3ffffff ];
+-    this.length = 1;
+-  } else if (number < 0x10000000000000) {
+-    this.words = [
+-      number & 0x3ffffff,
+-      (number / 0x4000000) & 0x3ffffff
+-    ];
+-    this.length = 2;
+-  } else {
+-    assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
+-    this.words = [
+-      number & 0x3ffffff,
+-      (number / 0x4000000) & 0x3ffffff,
+-      1
+-    ];
+-    this.length = 3;
++
++  if (placeHolders === 2) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
++    arr[L++] = tmp & 0xFF
++  } else if (placeHolders === 1) {
++    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
++    arr[L++] = (tmp >> 8) & 0xFF
++    arr[L++] = tmp & 0xFF
+   }
+ 
+-  if (endian !== 'le')
+-    return;
++  return arr
++}
+ 
+-  // Reverse the bytes
+-  this._initArray(this.toArray(), base, endian);
+-};
++function tripletToBase64 (num) {
++  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
++}
+ 
+-BN.prototype._initArray = function _initArray(number, base, endian) {
+-  // Perhaps a Uint8Array
+-  assert(typeof number.length === 'number');
+-  if (number.length <= 0) {
+-    this.words = [ 0 ];
+-    this.length = 1;
+-    return this;
++function encodeChunk (uint8, start, end) {
++  var tmp
++  var output = []
++  for (var i = start; i < end; i += 3) {
++    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
++    output.push(tripletToBase64(tmp))
+   }
++  return output.join('')
++}
+ 
+-  this.length = Math.ceil(number.length / 3);
+-  this.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    this.words[i] = 0;
++function fromByteArray (uint8) {
++  var tmp
++  var len = uint8.length
++  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
++  var output = ''
++  var parts = []
++  var maxChunkLength = 16383 // must be multiple of 3
+ 
+-  var off = 0;
+-  if (endian === 'be') {
+-    for (var i = number.length - 1, j = 0; i >= 0; i -= 3) {
+-      var w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
+-      this.words[j] |= (w << off) & 0x3ffffff;
+-      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+-      off += 24;
+-      if (off >= 26) {
+-        off -= 26;
+-        j++;
+-      }
+-    }
+-  } else if (endian === 'le') {
+-    for (var i = 0, j = 0; i < number.length; i += 3) {
+-      var w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
+-      this.words[j] |= (w << off) & 0x3ffffff;
+-      this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+-      off += 24;
+-      if (off >= 26) {
+-        off -= 26;
+-        j++;
+-      }
+-    }
++  // go through the array every three bytes, we'll deal with trailing stuff later
++  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
++    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+   }
+-  return this.strip();
++
++  // pad the end with zeros, but make sure to not forget the extra bytes
++  if (extraBytes === 1) {
++    tmp = uint8[len - 1]
++    output += lookup[tmp >> 2]
++    output += lookup[(tmp << 4) & 0x3F]
++    output += '=='
++  } else if (extraBytes === 2) {
++    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
++    output += lookup[tmp >> 10]
++    output += lookup[(tmp >> 4) & 0x3F]
++    output += lookup[(tmp << 2) & 0x3F]
++    output += '='
++  }
++
++  parts.push(output)
++
++  return parts.join('')
++}
++
++},{}],61:[function(require,module,exports){
++var toString = {}.toString;
++
++module.exports = Array.isArray || function (arr) {
++  return toString.call(arr) == '[object Array]';
+ };
+ 
+-function parseHex(str, start, end) {
+-  var r = 0;
+-  var len = Math.min(str.length, end);
+-  for (var i = start; i < len; i++) {
+-    var c = str.charCodeAt(i) - 48;
++},{}],62:[function(require,module,exports){
++'use strict'
+ 
+-    r <<= 4;
++var monotoneTriangulate = require('./lib/monotone')
++var makeIndex = require('./lib/triangulation')
++var delaunayFlip = require('./lib/delaunay')
++var filterTriangulation = require('./lib/filter')
+ 
+-    // 'a' - 'f'
+-    if (c >= 49 && c <= 54)
+-      r |= c - 49 + 0xa;
++module.exports = cdt2d
+ 
+-    // 'A' - 'F'
+-    else if (c >= 17 && c <= 22)
+-      r |= c - 17 + 0xa;
++function canonicalizeEdge(e) {
++  return [Math.min(e[0], e[1]), Math.max(e[0], e[1])]
++}
+ 
+-    // '0' - '9'
+-    else
+-      r |= c & 0xf;
++function compareEdge(a, b) {
++  return a[0]-b[0] || a[1]-b[1]
++}
++
++function canonicalizeEdges(edges) {
++  return edges.map(canonicalizeEdge).sort(compareEdge)
++}
++
++function getDefault(options, property, dflt) {
++  if(property in options) {
++    return options[property]
+   }
+-  return r;
++  return dflt
+ }
+ 
+-BN.prototype._parseHex = function _parseHex(number, start) {
+-  // Create possibly bigger array to ensure that it fits the number
+-  this.length = Math.ceil((number.length - start) / 6);
+-  this.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    this.words[i] = 0;
++function cdt2d(points, edges, options) {
+ 
+-  // Scan 24-bit chunks and add them to the number
+-  var off = 0;
+-  for (var i = number.length - 6, j = 0; i >= start; i -= 6) {
+-    var w = parseHex(number, i, i + 6);
+-    this.words[j] |= (w << off) & 0x3ffffff;
+-    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
+-    off += 24;
+-    if (off >= 26) {
+-      off -= 26;
+-      j++;
+-    }
++  if(!Array.isArray(edges)) {
++    options = edges || {}
++    edges = []
++  } else {
++    options = options || {}
++    edges = edges || []
+   }
+-  if (i + 6 !== start) {
+-    var w = parseHex(number, start, i + 6);
+-    this.words[j] |= (w << off) & 0x3ffffff;
+-    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
++
++  //Parse out options
++  var delaunay = !!getDefault(options, 'delaunay', true)
++  var interior = !!getDefault(options, 'interior', true)
++  var exterior = !!getDefault(options, 'exterior', true)
++  var infinity = !!getDefault(options, 'infinity', false)
++
++  //Handle trivial case
++  if((!interior && !exterior) || points.length === 0) {
++    return []
+   }
+-  this.strip();
+-};
+ 
+-function parseBase(str, start, end, mul) {
+-  var r = 0;
+-  var len = Math.min(str.length, end);
+-  for (var i = start; i < len; i++) {
+-    var c = str.charCodeAt(i) - 48;
++  //Construct initial triangulation
++  var cells = monotoneTriangulate(points, edges)
+ 
+-    r *= mul;
++  //If delaunay refinement needed, then improve quality by edge flipping
++  if(delaunay || interior !== exterior || infinity) {
+ 
+-    // 'a'
+-    if (c >= 49)
+-      r += c - 49 + 0xa;
++    //Index all of the cells to support fast neighborhood queries
++    var triangulation = makeIndex(points.length, canonicalizeEdges(edges))
++    for(var i=0; i<cells.length; ++i) {
++      var f = cells[i]
++      triangulation.addTriangle(f[0], f[1], f[2])
++    }
+ 
+-    // 'A'
+-    else if (c >= 17)
+-      r += c - 17 + 0xa;
++    //Run edge flipping
++    if(delaunay) {
++      delaunayFlip(points, triangulation)
++    }
+ 
+-    // '0' - '9'
+-    else
+-      r += c;
++    //Filter points
++    if(!exterior) {
++      return filterTriangulation(triangulation, -1)
++    } else if(!interior) {
++      return filterTriangulation(triangulation,  1, infinity)
++    } else if(infinity) {
++      return filterTriangulation(triangulation, 0, infinity)
++    } else {
++      return triangulation.cells()
++    }
++    
++  } else {
++    return cells
+   }
+-  return r;
+ }
+ 
+-BN.prototype._parseBase = function _parseBase(number, base, start) {
+-  // Initialize as zero
+-  this.words = [ 0 ];
+-  this.length = 1;
++},{"./lib/delaunay":63,"./lib/filter":64,"./lib/monotone":65,"./lib/triangulation":66}],63:[function(require,module,exports){
++'use strict'
+ 
+-  // Find length of limb in base
+-  for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base)
+-    limbLen++;
+-  limbLen--;
+-  limbPow = (limbPow / base) | 0;
++var inCircle = require('robust-in-sphere')[4]
++var bsearch = require('binary-search-bounds')
+ 
+-  var total = number.length - start;
+-  var mod = total % limbLen;
+-  var end = Math.min(total, total - mod) + start;
++module.exports = delaunayRefine
+ 
+-  var word = 0;
+-  for (var i = start; i < end; i += limbLen) {
+-    word = parseBase(number, i, i + limbLen, base);
++function testFlip(points, triangulation, stack, a, b, x) {
++  var y = triangulation.opposite(a, b)
+ 
+-    this.imuln(limbPow);
+-    if (this.words[0] + word < 0x4000000)
+-      this.words[0] += word;
+-    else
+-      this._iaddn(word);
++  //Test boundary edge
++  if(y < 0) {
++    return
+   }
+ 
+-  if (mod !== 0) {
+-    var pow = 1;
+-    var word = parseBase(number, i, number.length, base);
++  //Swap edge if order flipped
++  if(b < a) {
++    var tmp = a
++    a = b
++    b = tmp
++    tmp = x
++    x = y
++    y = tmp
++  }
+ 
+-    for (var i = 0; i < mod; i++)
+-      pow *= base;
+-    this.imuln(pow);
+-    if (this.words[0] + word < 0x4000000)
+-      this.words[0] += word;
+-    else
+-      this._iaddn(word);
++  //Test if edge is constrained
++  if(triangulation.isConstraint(a, b)) {
++    return
+   }
+-};
+ 
+-BN.prototype.copy = function copy(dest) {
+-  dest.words = new Array(this.length);
+-  for (var i = 0; i < this.length; i++)
+-    dest.words[i] = this.words[i];
+-  dest.length = this.length;
+-  dest.sign = this.sign;
+-  dest.red = this.red;
+-};
++  //Test if edge is delaunay
++  if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
++    stack.push(a, b)
++  }
++}
+ 
+-BN.prototype.clone = function clone() {
+-  var r = new BN(null);
+-  this.copy(r);
+-  return r;
+-};
++//Assume edges are sorted lexicographically
++function delaunayRefine(points, triangulation) {
++  var stack = []
+ 
+-// Remove leading `0` from `this`
+-BN.prototype.strip = function strip() {
+-  while (this.length > 1 && this.words[this.length - 1] === 0)
+-    this.length--;
+-  return this._normSign();
+-};
++  var numPoints = points.length
++  var stars = triangulation.stars
++  for(var a=0; a<numPoints; ++a) {
++    var star = stars[a]
++    for(var j=1; j<star.length; j+=2) {
++      var b = star[j]
+ 
+-BN.prototype._normSign = function _normSign() {
+-  // -0 = 0
+-  if (this.length === 1 && this.words[0] === 0)
+-    this.sign = false;
+-  return this;
+-};
++      //If order is not consistent, then skip edge
++      if(b < a) {
++        continue
++      }
+ 
+-BN.prototype.inspect = function inspect() {
+-  return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
+-};
++      //Check if edge is constrained
++      if(triangulation.isConstraint(a, b)) {
++        continue
++      }
+ 
+-/*
++      //Find opposite edge
++      var x = star[j-1], y = -1
++      for(var k=1; k<star.length; k+=2) {
++        if(star[k-1] === b) {
++          y = star[k]
++          break
++        }
++      }
+ 
+-var zeros = [];
+-var groupSizes = [];
+-var groupBases = [];
++      //If this is a boundary edge, don't flip it
++      if(y < 0) {
++        continue
++      }
+ 
+-var s = '';
+-var i = -1;
+-while (++i < BN.wordSize) {
+-  zeros[i] = s;
+-  s += '0';
+-}
+-groupSizes[0] = 0;
+-groupSizes[1] = 0;
+-groupBases[0] = 0;
+-groupBases[1] = 0;
+-var base = 2 - 1;
+-while (++base < 36 + 1) {
+-  var groupSize = 0;
+-  var groupBase = 1;
+-  while (groupBase < (1 << BN.wordSize) / base) {
+-    groupBase *= base;
+-    groupSize += 1;
++      //If edge is in circle, flip it
++      if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
++        stack.push(a, b)
++      }
++    }
+   }
+-  groupSizes[base] = groupSize;
+-  groupBases[base] = groupBase;
+-}
+-
+-*/
+-
+-var zeros = [
+-  '',
+-  '0',
+-  '00',
+-  '000',
+-  '0000',
+-  '00000',
+-  '000000',
+-  '0000000',
+-  '00000000',
+-  '000000000',
+-  '0000000000',
+-  '00000000000',
+-  '000000000000',
+-  '0000000000000',
+-  '00000000000000',
+-  '000000000000000',
+-  '0000000000000000',
+-  '00000000000000000',
+-  '000000000000000000',
+-  '0000000000000000000',
+-  '00000000000000000000',
+-  '000000000000000000000',
+-  '0000000000000000000000',
+-  '00000000000000000000000',
+-  '000000000000000000000000',
+-  '0000000000000000000000000'
+-];
+-
+-var groupSizes = [
+-  0, 0,
+-  25, 16, 12, 11, 10, 9, 8,
+-  8, 7, 7, 7, 7, 6, 6,
+-  6, 6, 6, 6, 6, 5, 5,
+-  5, 5, 5, 5, 5, 5, 5,
+-  5, 5, 5, 5, 5, 5, 5
+-];
+ 
+-var groupBases = [
+-  0, 0,
+-  33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
+-  43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
+-  16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
+-  6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
+-  24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
+-];
++  while(stack.length > 0) {
++    var b = stack.pop()
++    var a = stack.pop()
+ 
+-BN.prototype.toString = function toString(base, padding) {
+-  base = base || 10;
+-  if (base === 16 || base === 'hex') {
+-    var out = '';
+-    var off = 0;
+-    var padding = padding | 0 || 1;
+-    var carry = 0;
+-    for (var i = 0; i < this.length; i++) {
+-      var w = this.words[i];
+-      var word = (((w << off) | carry) & 0xffffff).toString(16);
+-      carry = (w >>> (24 - off)) & 0xffffff;
+-      if (carry !== 0 || i !== this.length - 1)
+-        out = zeros[6 - word.length] + word + out;
+-      else
+-        out = word + out;
+-      off += 2;
+-      if (off >= 26) {
+-        off -= 26;
+-        i--;
++    //Find opposite pairs
++    var x = -1, y = -1
++    var star = stars[a]
++    for(var i=1; i<star.length; i+=2) {
++      var s = star[i-1]
++      var t = star[i]
++      if(s === b) {
++        y = t
++      } else if(t === b) {
++        x = s
+       }
+     }
+-    if (carry !== 0)
+-      out = carry.toString(16) + out;
+-    while (out.length % padding !== 0)
+-      out = '0' + out;
+-    if (this.sign)
+-      out = '-' + out;
+-    return out;
+-  } else if (base === (base | 0) && base >= 2 && base <= 36) {
+-    // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
+-    var groupSize = groupSizes[base];
+-    // var groupBase = Math.pow(base, groupSize);
+-    var groupBase = groupBases[base];
+-    var out = '';
+-    var c = this.clone();
+-    c.sign = false;
+-    while (c.cmpn(0) !== 0) {
+-      var r = c.modn(groupBase).toString(base);
+-      c = c.idivn(groupBase);
+ 
+-      if (c.cmpn(0) !== 0)
+-        out = zeros[groupSize - r.length] + r + out;
+-      else
+-        out = r + out;
++    //If x/y are both valid then skip edge
++    if(x < 0 || y < 0) {
++      continue
+     }
+-    if (this.cmpn(0) === 0)
+-      out = '0' + out;
+-    if (this.sign)
+-      out = '-' + out;
+-    return out;
+-  } else {
+-    assert(false, 'Base should be between 2 and 36');
+-  }
+-};
+ 
+-BN.prototype.toJSON = function toJSON() {
+-  return this.toString(16);
+-};
++    //If edge is now delaunay, then don't flip it
++    if(inCircle(points[a], points[b], points[x], points[y]) >= 0) {
++      continue
++    }
+ 
+-BN.prototype.toArray = function toArray(endian) {
+-  this.strip();
+-  var res = new Array(this.byteLength());
+-  res[0] = 0;
++    //Flip the edge
++    triangulation.flip(a, b)
+ 
+-  var q = this.clone();
+-  if (endian !== 'le') {
+-    // Assume big-endian
+-    for (var i = 0; q.cmpn(0) !== 0; i++) {
+-      var b = q.andln(0xff);
+-      q.ishrn(8);
++    //Test flipping neighboring edges
++    testFlip(points, triangulation, stack, x, a, y)
++    testFlip(points, triangulation, stack, a, y, x)
++    testFlip(points, triangulation, stack, y, b, x)
++    testFlip(points, triangulation, stack, b, x, y)
++  }
++}
+ 
+-      res[res.length - i - 1] = b;
+-    }
+-  } else {
+-    // Assume little-endian
+-    for (var i = 0; q.cmpn(0) !== 0; i++) {
+-      var b = q.andln(0xff);
+-      q.ishrn(8);
++},{"binary-search-bounds":67,"robust-in-sphere":416}],64:[function(require,module,exports){
++'use strict'
+ 
+-      res[i] = b;
+-    }
+-  }
++var bsearch = require('binary-search-bounds')
+ 
+-  return res;
+-};
++module.exports = classifyFaces
+ 
+-if (Math.clz32) {
+-  BN.prototype._countBits = function _countBits(w) {
+-    return 32 - Math.clz32(w);
+-  };
+-} else {
+-  BN.prototype._countBits = function _countBits(w) {
+-    var t = w;
+-    var r = 0;
+-    if (t >= 0x1000) {
+-      r += 13;
+-      t >>>= 13;
+-    }
+-    if (t >= 0x40) {
+-      r += 7;
+-      t >>>= 7;
++function FaceIndex(cells, neighbor, constraint, flags, active, next, boundary) {
++  this.cells       = cells
++  this.neighbor    = neighbor
++  this.flags       = flags
++  this.constraint  = constraint
++  this.active      = active
++  this.next        = next
++  this.boundary    = boundary
++}
++
++var proto = FaceIndex.prototype
++
++function compareCell(a, b) {
++  return a[0] - b[0] ||
++         a[1] - b[1] ||
++         a[2] - b[2]
++}
++
++proto.locate = (function() {
++  var key = [0,0,0]
++  return function(a, b, c) {
++    var x = a, y = b, z = c
++    if(b < c) {
++      if(b < a) {
++        x = b
++        y = c
++        z = a
++      }
++    } else if(c < a) {
++      x = c
++      y = a
++      z = b
+     }
+-    if (t >= 0x8) {
+-      r += 4;
+-      t >>>= 4;
++    if(x < 0) {
++      return -1
+     }
+-    if (t >= 0x02) {
+-      r += 2;
+-      t >>>= 2;
++    key[0] = x
++    key[1] = y
++    key[2] = z
++    return bsearch.eq(this.cells, key, compareCell)
++  }
++})()
++
++function indexCells(triangulation, infinity) {
++  //First get cells and canonicalize
++  var cells = triangulation.cells()
++  var nc = cells.length
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    var x = c[0], y = c[1], z = c[2]
++    if(y < z) {
++      if(y < x) {
++        c[0] = y
++        c[1] = z
++        c[2] = x
++      }
++    } else if(z < x) {
++      c[0] = z
++      c[1] = x
++      c[2] = y
+     }
+-    return r + t;
+-  };
+-}
++  }
++  cells.sort(compareCell)
+ 
+-BN.prototype._zeroBits = function _zeroBits(w) {
+-  // Short-cut
+-  if (w === 0)
+-    return 26;
++  //Initialize flag array
++  var flags = new Array(nc)
++  for(var i=0; i<flags.length; ++i) {
++    flags[i] = 0
++  }
+ 
+-  var t = w;
+-  var r = 0;
+-  if ((t & 0x1fff) === 0) {
+-    r += 13;
+-    t >>>= 13;
++  //Build neighbor index, initialize queues
++  var active = []
++  var next   = []
++  var neighbor = new Array(3*nc)
++  var constraint = new Array(3*nc)
++  var boundary = null
++  if(infinity) {
++    boundary = []
+   }
+-  if ((t & 0x7f) === 0) {
+-    r += 7;
+-    t >>>= 7;
++  var index = new FaceIndex(
++    cells,
++    neighbor,
++    constraint,
++    flags,
++    active,
++    next,
++    boundary)
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    for(var j=0; j<3; ++j) {
++      var x = c[j], y = c[(j+1)%3]
++      var a = neighbor[3*i+j] = index.locate(y, x, triangulation.opposite(y, x))
++      var b = constraint[3*i+j] = triangulation.isConstraint(x, y)
++      if(a < 0) {
++        if(b) {
++          next.push(i)
++        } else {
++          active.push(i)
++          flags[i] = 1
++        }
++        if(infinity) {
++          boundary.push([y, x, -1])
++        }
++      }
++    }
+   }
+-  if ((t & 0xf) === 0) {
+-    r += 4;
+-    t >>>= 4;
++  return index
++}
++
++function filterCells(cells, flags, target) {
++  var ptr = 0
++  for(var i=0; i<cells.length; ++i) {
++    if(flags[i] === target) {
++      cells[ptr++] = cells[i]
++    }
+   }
+-  if ((t & 0x3) === 0) {
+-    r += 2;
+-    t >>>= 2;
++  cells.length = ptr
++  return cells
++}
++
++function classifyFaces(triangulation, target, infinity) {
++  var index = indexCells(triangulation, infinity)
++
++  if(target === 0) {
++    if(infinity) {
++      return index.cells.concat(index.boundary)
++    } else {
++      return index.cells
++    }
+   }
+-  if ((t & 0x1) === 0)
+-    r++;
+-  return r;
+-};
+ 
+-// Return number of used bits in a BN
+-BN.prototype.bitLength = function bitLength() {
+-  var hi = 0;
+-  var w = this.words[this.length - 1];
+-  var hi = this._countBits(w);
+-  return (this.length - 1) * 26 + hi;
+-};
++  var side = 1
++  var active = index.active
++  var next = index.next
++  var flags = index.flags
++  var cells = index.cells
++  var constraint = index.constraint
++  var neighbor = index.neighbor
+ 
+-// Number of trailing zero bits
+-BN.prototype.zeroBits = function zeroBits() {
+-  if (this.cmpn(0) === 0)
+-    return 0;
++  while(active.length > 0 || next.length > 0) {
++    while(active.length > 0) {
++      var t = active.pop()
++      if(flags[t] === -side) {
++        continue
++      }
++      flags[t] = side
++      var c = cells[t]
++      for(var j=0; j<3; ++j) {
++        var f = neighbor[3*t+j]
++        if(f >= 0 && flags[f] === 0) {
++          if(constraint[3*t+j]) {
++            next.push(f)
++          } else {
++            active.push(f)
++            flags[f] = side
++          }
++        }
++      }
++    }
+ 
+-  var r = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var b = this._zeroBits(this.words[i]);
+-    r += b;
+-    if (b !== 26)
+-      break;
++    //Swap arrays and loop
++    var tmp = next
++    next = active
++    active = tmp
++    next.length = 0
++    side = -side
+   }
+-  return r;
+-};
+ 
+-BN.prototype.byteLength = function byteLength() {
+-  return Math.ceil(this.bitLength() / 8);
+-};
++  var result = filterCells(cells, flags, target)
++  if(infinity) {
++    return result.concat(index.boundary)
++  }
++  return result
++}
+ 
+-// Return negative clone of `this`
+-BN.prototype.neg = function neg() {
+-  if (this.cmpn(0) === 0)
+-    return this.clone();
++},{"binary-search-bounds":67}],65:[function(require,module,exports){
++'use strict'
+ 
+-  var r = this.clone();
+-  r.sign = !this.sign;
+-  return r;
+-};
++var bsearch = require('binary-search-bounds')
++var orient = require('robust-orientation')[3]
+ 
++var EVENT_POINT = 0
++var EVENT_END   = 1
++var EVENT_START = 2
+ 
+-// Or `num` with `this` in-place
+-BN.prototype.ior = function ior(num) {
+-  this.sign = this.sign || num.sign;
++module.exports = monotoneTriangulate
+ 
+-  while (this.length < num.length)
+-    this.words[this.length++] = 0;
++//A partial convex hull fragment, made of two unimonotone polygons
++function PartialHull(a, b, idx, lowerIds, upperIds) {
++  this.a = a
++  this.b = b
++  this.idx = idx
++  this.lowerIds = lowerIds
++  this.upperIds = upperIds
++}
+ 
+-  for (var i = 0; i < num.length; i++)
+-    this.words[i] = this.words[i] | num.words[i];
++//An event in the sweep line procedure
++function Event(a, b, type, idx) {
++  this.a    = a
++  this.b    = b
++  this.type = type
++  this.idx  = idx
++}
+ 
+-  return this.strip();
+-};
++//This is used to compare events for the sweep line procedure
++// Points are:
++//  1. sorted lexicographically
++//  2. sorted by type  (point < end < start)
++//  3. segments sorted by winding order
++//  4. sorted by index
++function compareEvent(a, b) {
++  var d =
++    (a.a[0] - b.a[0]) ||
++    (a.a[1] - b.a[1]) ||
++    (a.type - b.type)
++  if(d) { return d }
++  if(a.type !== EVENT_POINT) {
++    d = orient(a.a, a.b, b.b)
++    if(d) { return d }
++  }
++  return a.idx - b.idx
++}
+ 
++function testPoint(hull, p) {
++  return orient(hull.a, hull.b, p)
++}
+ 
+-// Or `num` with `this`
+-BN.prototype.or = function or(num) {
+-  if (this.length > num.length)
+-    return this.clone().ior(num);
+-  else
+-    return num.clone().ior(this);
+-};
++function addPoint(cells, hulls, points, p, idx) {
++  var lo = bsearch.lt(hulls, p, testPoint)
++  var hi = bsearch.gt(hulls, p, testPoint)
++  for(var i=lo; i<hi; ++i) {
++    var hull = hulls[i]
+ 
++    //Insert p into lower hull
++    var lowerIds = hull.lowerIds
++    var m = lowerIds.length
++    while(m > 1 && orient(
++        points[lowerIds[m-2]],
++        points[lowerIds[m-1]],
++        p) > 0) {
++      cells.push(
++        [lowerIds[m-1],
++         lowerIds[m-2],
++         idx])
++      m -= 1
++    }
++    lowerIds.length = m
++    lowerIds.push(idx)
+ 
+-// And `num` with `this` in-place
+-BN.prototype.iand = function iand(num) {
+-  this.sign = this.sign && num.sign;
++    //Insert p into upper hull
++    var upperIds = hull.upperIds
++    var m = upperIds.length
++    while(m > 1 && orient(
++        points[upperIds[m-2]],
++        points[upperIds[m-1]],
++        p) < 0) {
++      cells.push(
++        [upperIds[m-2],
++         upperIds[m-1],
++         idx])
++      m -= 1
++    }
++    upperIds.length = m
++    upperIds.push(idx)
++  }
++}
+ 
+-  // b = min-length(num, this)
+-  var b;
+-  if (this.length > num.length)
+-    b = num;
+-  else
+-    b = this;
++function findSplit(hull, edge) {
++  var d
++  if(hull.a[0] < edge.a[0]) {
++    d = orient(hull.a, hull.b, edge.a)
++  } else {
++    d = orient(edge.b, edge.a, hull.a)
++  }
++  if(d) { return d }
++  if(edge.b[0] < hull.b[0]) {
++    d = orient(hull.a, hull.b, edge.b)
++  } else {
++    d = orient(edge.b, edge.a, hull.b)
++  }
++  return d || hull.idx - edge.idx
++}
+ 
+-  for (var i = 0; i < b.length; i++)
+-    this.words[i] = this.words[i] & num.words[i];
++function splitHulls(hulls, points, event) {
++  var splitIdx = bsearch.le(hulls, event, findSplit)
++  var hull = hulls[splitIdx]
++  var upperIds = hull.upperIds
++  var x = upperIds[upperIds.length-1]
++  hull.upperIds = [x]
++  hulls.splice(splitIdx+1, 0,
++    new PartialHull(event.a, event.b, event.idx, [x], upperIds))
++}
+ 
+-  this.length = b.length;
+ 
+-  return this.strip();
+-};
++function mergeHulls(hulls, points, event) {
++  //Swap pointers for merge search
++  var tmp = event.a
++  event.a = event.b
++  event.b = tmp
++  var mergeIdx = bsearch.eq(hulls, event, findSplit)
++  var upper = hulls[mergeIdx]
++  var lower = hulls[mergeIdx-1]
++  lower.upperIds = upper.upperIds
++  hulls.splice(mergeIdx, 1)
++}
+ 
+ 
+-// And `num` with `this`
+-BN.prototype.and = function and(num) {
+-  if (this.length > num.length)
+-    return this.clone().iand(num);
+-  else
+-    return num.clone().iand(this);
+-};
++function monotoneTriangulate(points, edges) {
+ 
++  var numPoints = points.length
++  var numEdges = edges.length
+ 
+-// Xor `num` with `this` in-place
+-BN.prototype.ixor = function ixor(num) {
+-  this.sign = this.sign || num.sign;
++  var events = []
+ 
+-  // a.length > b.length
+-  var a;
+-  var b;
+-  if (this.length > num.length) {
+-    a = this;
+-    b = num;
+-  } else {
+-    a = num;
+-    b = this;
++  //Create point events
++  for(var i=0; i<numPoints; ++i) {
++    events.push(new Event(
++      points[i],
++      null,
++      EVENT_POINT,
++      i))
+   }
+ 
+-  for (var i = 0; i < b.length; i++)
+-    this.words[i] = a.words[i] ^ b.words[i];
++  //Create edge events
++  for(var i=0; i<numEdges; ++i) {
++    var e = edges[i]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    if(a[0] < b[0]) {
++      events.push(
++        new Event(a, b, EVENT_START, i),
++        new Event(b, a, EVENT_END, i))
++    } else if(a[0] > b[0]) {
++      events.push(
++        new Event(b, a, EVENT_START, i),
++        new Event(a, b, EVENT_END, i))
++    }
++  }
+ 
+-  if (this !== a)
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
++  //Sort events
++  events.sort(compareEvent)
+ 
+-  this.length = a.length;
++  //Initialize hull
++  var minX = events[0].a[0] - (1 + Math.abs(events[0].a[0])) * Math.pow(2, -52)
++  var hull = [ new PartialHull([minX, 1], [minX, 0], -1, [], [], [], []) ]
+ 
+-  return this.strip();
+-};
++  //Process events in order
++  var cells = []
++  for(var i=0, numEvents=events.length; i<numEvents; ++i) {
++    var event = events[i]
++    var type = event.type
++    if(type === EVENT_POINT) {
++      addPoint(cells, hull, points, event.a, event.idx)
++    } else if(type === EVENT_START) {
++      splitHulls(hull, points, event)
++    } else {
++      mergeHulls(hull, points, event)
++    }
++  }
+ 
++  //Return triangulation
++  return cells
++}
+ 
+-// Xor `num` with `this`
+-BN.prototype.xor = function xor(num) {
+-  if (this.length > num.length)
+-    return this.clone().ixor(num);
+-  else
+-    return num.clone().ixor(this);
+-};
++},{"binary-search-bounds":67,"robust-orientation":418}],66:[function(require,module,exports){
++'use strict'
+ 
++var bsearch = require('binary-search-bounds')
+ 
+-// Set `bit` of `this`
+-BN.prototype.setn = function setn(bit, val) {
+-  assert(typeof bit === 'number' && bit >= 0);
++module.exports = createTriangulation
+ 
+-  var off = (bit / 26) | 0;
+-  var wbit = bit % 26;
++function Triangulation(stars, edges) {
++  this.stars = stars
++  this.edges = edges
++}
+ 
+-  while (this.length <= off)
+-    this.words[this.length++] = 0;
++var proto = Triangulation.prototype
+ 
+-  if (val)
+-    this.words[off] = this.words[off] | (1 << wbit);
+-  else
+-    this.words[off] = this.words[off] & ~(1 << wbit);
+-
+-  return this.strip();
+-};
+-
+-
+-// Add `num` to `this` in-place
+-BN.prototype.iadd = function iadd(num) {
+-  // negative + positive
+-  if (this.sign && !num.sign) {
+-    this.sign = false;
+-    var r = this.isub(num);
+-    this.sign = !this.sign;
+-    return this._normSign();
+-
+-  // positive + negative
+-  } else if (!this.sign && num.sign) {
+-    num.sign = false;
+-    var r = this.isub(num);
+-    num.sign = true;
+-    return r._normSign();
+-  }
+-
+-  // a.length > b.length
+-  var a;
+-  var b;
+-  if (this.length > num.length) {
+-    a = this;
+-    b = num;
+-  } else {
+-    a = num;
+-    b = this;
++function removePair(list, j, k) {
++  for(var i=1, n=list.length; i<n; i+=2) {
++    if(list[i-1] === j && list[i] === k) {
++      list[i-1] = list[n-2]
++      list[i] = list[n-1]
++      list.length = n - 2
++      return
++    }
+   }
++}
+ 
+-  var carry = 0;
+-  for (var i = 0; i < b.length; i++) {
+-    var r = a.words[i] + b.words[i] + carry;
+-    this.words[i] = r & 0x3ffffff;
+-    carry = r >>> 26;
++proto.isConstraint = (function() {
++  var e = [0,0]
++  function compareLex(a, b) {
++    return a[0] - b[0] || a[1] - b[1]
+   }
+-  for (; carry !== 0 && i < a.length; i++) {
+-    var r = a.words[i] + carry;
+-    this.words[i] = r & 0x3ffffff;
+-    carry = r >>> 26;
++  return function(i, j) {
++    e[0] = Math.min(i,j)
++    e[1] = Math.max(i,j)
++    return bsearch.eq(this.edges, e, compareLex) >= 0
+   }
++})()
+ 
+-  this.length = a.length;
+-  if (carry !== 0) {
+-    this.words[this.length] = carry;
+-    this.length++;
+-  // Copy the rest of the words
+-  } else if (a !== this) {
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
+-  }
++proto.removeTriangle = function(i, j, k) {
++  var stars = this.stars
++  removePair(stars[i], j, k)
++  removePair(stars[j], k, i)
++  removePair(stars[k], i, j)
++}
+ 
+-  return this;
+-};
++proto.addTriangle = function(i, j, k) {
++  var stars = this.stars
++  stars[i].push(j, k)
++  stars[j].push(k, i)
++  stars[k].push(i, j)
++}
+ 
+-// Add `num` to `this`
+-BN.prototype.add = function add(num) {
+-  if (num.sign && !this.sign) {
+-    num.sign = false;
+-    var res = this.sub(num);
+-    num.sign = true;
+-    return res;
+-  } else if (!num.sign && this.sign) {
+-    this.sign = false;
+-    var res = num.sub(this);
+-    this.sign = true;
+-    return res;
++proto.opposite = function(j, i) {
++  var list = this.stars[i]
++  for(var k=1, n=list.length; k<n; k+=2) {
++    if(list[k] === j) {
++      return list[k-1]
++    }
+   }
++  return -1
++}
+ 
+-  if (this.length > num.length)
+-    return this.clone().iadd(num);
+-  else
+-    return num.clone().iadd(this);
+-};
+-
+-// Subtract `num` from `this` in-place
+-BN.prototype.isub = function isub(num) {
+-  // this - (-num) = this + num
+-  if (num.sign) {
+-    num.sign = false;
+-    var r = this.iadd(num);
+-    num.sign = true;
+-    return r._normSign();
++proto.flip = function(i, j) {
++  var a = this.opposite(i, j)
++  var b = this.opposite(j, i)
++  this.removeTriangle(i, j, a)
++  this.removeTriangle(j, i, b)
++  this.addTriangle(i, b, a)
++  this.addTriangle(j, a, b)
++}
+ 
+-  // -this - num = -(this + num)
+-  } else if (this.sign) {
+-    this.sign = false;
+-    this.iadd(num);
+-    this.sign = true;
+-    return this._normSign();
++proto.edges = function() {
++  var stars = this.stars
++  var result = []
++  for(var i=0, n=stars.length; i<n; ++i) {
++    var list = stars[i]
++    for(var j=0, m=list.length; j<m; j+=2) {
++      result.push([list[j], list[j+1]])
++    }
+   }
++  return result
++}
+ 
+-  // At this point both numbers are positive
+-  var cmp = this.cmp(num);
++proto.cells = function() {
++  var stars = this.stars
++  var result = []
++  for(var i=0, n=stars.length; i<n; ++i) {
++    var list = stars[i]
++    for(var j=0, m=list.length; j<m; j+=2) {
++      var s = list[j]
++      var t = list[j+1]
++      if(i < Math.min(s, t)) {
++        result.push([i, s, t])
++      }
++    }
++  }
++  return result
++}
+ 
+-  // Optimization - zeroify
+-  if (cmp === 0) {
+-    this.sign = false;
+-    this.length = 1;
+-    this.words[0] = 0;
+-    return this;
++function createTriangulation(numVerts, edges) {
++  var stars = new Array(numVerts)
++  for(var i=0; i<numVerts; ++i) {
++    stars[i] = []
+   }
++  return new Triangulation(stars, edges)
++}
+ 
+-  // a > b
+-  var a;
+-  var b;
+-  if (cmp > 0) {
+-    a = this;
+-    b = num;
++},{"binary-search-bounds":67}],67:[function(require,module,exports){
++"use strict"
++
++function compileSearch(funcName, predicate, reversed, extraArgs, earlyOut) {
++  var code = [
++    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
++earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
++";while(l<=h){\
++var m=(l+h)>>>1,x=a[m]"]
++  if(earlyOut) {
++    if(predicate.indexOf("c") < 0) {
++      code.push(";if(x===y){return m}else if(x<=y){")
++    } else {
++      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
++    }
+   } else {
+-    a = num;
+-    b = this;
++    code.push(";if(", predicate, "){i=m;")
+   }
+-
+-  var carry = 0;
+-  for (var i = 0; i < b.length; i++) {
+-    var r = a.words[i] - b.words[i] + carry;
+-    carry = r >> 26;
+-    this.words[i] = r & 0x3ffffff;
++  if(reversed) {
++    code.push("l=m+1}else{h=m-1}")
++  } else {
++    code.push("h=m-1}else{l=m+1}")
+   }
+-  for (; carry !== 0 && i < a.length; i++) {
+-    var r = a.words[i] + carry;
+-    carry = r >> 26;
+-    this.words[i] = r & 0x3ffffff;
++  code.push("}")
++  if(earlyOut) {
++    code.push("return -1};")
++  } else {
++    code.push("return i};")
+   }
++  return code.join("")
++}
+ 
+-  // Copy rest of the words
+-  if (carry === 0 && i < a.length && a !== this)
+-    for (; i < a.length; i++)
+-      this.words[i] = a.words[i];
+-  this.length = Math.max(this.length, i);
+-
+-  if (a !== this)
+-    this.sign = true;
+-
+-  return this.strip();
+-};
++function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
++  var result = new Function([
++  compileSearch("A", "x" + predicate + "y", reversed, ["y"], earlyOut),
++  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], earlyOut),
++"function dispatchBsearch", suffix, "(a,y,c,l,h){\
++if(typeof(c)==='function'){\
++return P(a,(l===void 0)?0:l|0,(h===void 0)?a.length-1:h|0,y,c)\
++}else{\
++return A(a,(c===void 0)?0:c|0,(l===void 0)?a.length-1:l|0,y)\
++}}\
++return dispatchBsearch", suffix].join(""))
++  return result()
++}
+ 
+-// Subtract `num` from `this`
+-BN.prototype.sub = function sub(num) {
+-  return this.clone().isub(num);
+-};
++module.exports = {
++  ge: compileBoundsSearch(">=", false, "GE"),
++  gt: compileBoundsSearch(">", false, "GT"),
++  lt: compileBoundsSearch("<", true, "LT"),
++  le: compileBoundsSearch("<=", true, "LE"),
++  eq: compileBoundsSearch("-", true, "EQ", true)
++}
+ 
+-/*
+-// NOTE: This could be potentionally used to generate loop-less multiplications
+-function _genCombMulTo(alen, blen) {
+-  var len = alen + blen - 1;
+-  var src = [
+-    'var a = this.words, b = num.words, o = out.words, c = 0, w, ' +
+-        'mask = 0x3ffffff, shift = 0x4000000;',
+-    'out.length = ' + len + ';'
+-  ];
+-  for (var k = 0; k < len; k++) {
+-    var minJ = Math.max(0, k - alen + 1);
+-    var maxJ = Math.min(k, blen - 1);
++},{}],68:[function(require,module,exports){
++'use strict'
+ 
+-    for (var j = minJ; j <= maxJ; j++) {
+-      var i = k - j;
+-      var mul = 'a[' + i + '] * b[' + j + ']';
++module.exports = orientation
+ 
+-      if (j === minJ) {
+-        src.push('w = ' + mul + ' + c;');
+-        src.push('c = (w / shift) | 0;');
+-      } else {
+-        src.push('w += ' + mul + ';');
+-        src.push('c += (w / shift) | 0;');
++function orientation(s) {
++  var p = 1
++  for(var i=1; i<s.length; ++i) {
++    for(var j=0; j<i; ++j) {
++      if(s[i] < s[j]) {
++        p = -p
++      } else if(s[j] === s[i]) {
++        return 0
+       }
+-      src.push('w &= mask;');
+     }
+-    src.push('o[' + k + '] = w;');
+   }
+-  src.push('if (c !== 0) {',
+-           '  o[' + k + '] = c;',
+-           '  out.length++;',
+-           '}',
+-           'return out;');
+-
+-  return src.join('\n');
++  return p
+ }
+-*/
+ 
+-BN.prototype._smallMulTo = function _smallMulTo(num, out) {
+-  out.sign = num.sign !== this.sign;
+-  out.length = this.length + num.length;
++},{}],69:[function(require,module,exports){
++"use strict"
+ 
+-  var carry = 0;
+-  for (var k = 0; k < out.length - 1; k++) {
+-    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
+-    // note that ncarry could be >= 0x3ffffff
+-    var ncarry = carry >>> 26;
+-    var rword = carry & 0x3ffffff;
+-    var maxJ = Math.min(k, num.length - 1);
+-    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i] | 0;
+-      var b = num.words[j] | 0;
+-      var r = a * b;
++var dup = require("dup")
++var solve = require("robust-linear-solve")
+ 
+-      var lo = r & 0x3ffffff;
+-      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
+-      lo = (lo + rword) | 0;
+-      rword = lo & 0x3ffffff;
+-      ncarry = (ncarry + (lo >>> 26)) | 0;
+-    }
+-    out.words[k] = rword;
+-    carry = ncarry;
+-  }
+-  if (carry !== 0) {
+-    out.words[k] = carry;
+-  } else {
+-    out.length--;
++function dot(a, b) {
++  var s = 0.0
++  var d = a.length
++  for(var i=0; i<d; ++i) {
++    s += a[i] * b[i]
+   }
++  return s
++}
+ 
+-  return out.strip();
+-};
++function barycentricCircumcenter(points) {
++  var N = points.length
++  if(N === 0) {
++    return []
++  }
++  
++  var D = points[0].length
++  var A = dup([points.length+1, points.length+1], 1.0)
++  var b = dup([points.length+1], 1.0)
++  A[N][N] = 0.0
++  for(var i=0; i<N; ++i) {
++    for(var j=0; j<=i; ++j) {
++      A[j][i] = A[i][j] = 2.0 * dot(points[i], points[j])
++    }
++    b[i] = dot(points[i], points[i])
++  }
++  var x = solve(A, b)
+ 
+-BN.prototype._bigMulTo = function _bigMulTo(num, out) {
+-  out.sign = num.sign !== this.sign;
+-  out.length = this.length + num.length;
++  var denom = 0.0
++  var h = x[N+1]
++  for(var i=0; i<h.length; ++i) {
++    denom += h[i]
++  }
+ 
+-  var carry = 0;
+-  var hncarry = 0;
+-  for (var k = 0; k < out.length - 1; k++) {
+-    // Sum all words with the same `i + j = k` and accumulate `ncarry`,
+-    // note that ncarry could be >= 0x3ffffff
+-    var ncarry = hncarry;
+-    hncarry = 0;
+-    var rword = carry & 0x3ffffff;
+-    var maxJ = Math.min(k, num.length - 1);
+-    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i] | 0;
+-      var b = num.words[j] | 0;
+-      var r = a * b;
++  var y = new Array(N)
++  for(var i=0; i<N; ++i) {
++    var h = x[i]
++    var numer = 0.0
++    for(var j=0; j<h.length; ++j) {
++      numer += h[j]
++    }
++    y[i] =  numer / denom
++  }
+ 
+-      var lo = r & 0x3ffffff;
+-      ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
+-      lo = (lo + rword) | 0;
+-      rword = lo & 0x3ffffff;
+-      ncarry = (ncarry + (lo >>> 26)) | 0;
++  return y
++}
+ 
+-      hncarry += ncarry >>> 26;
+-      ncarry &= 0x3ffffff;
+-    }
+-    out.words[k] = rword;
+-    carry = ncarry;
+-    ncarry = hncarry;
++function circumcenter(points) {
++  if(points.length === 0) {
++    return []
+   }
+-  if (carry !== 0) {
+-    out.words[k] = carry;
+-  } else {
+-    out.length--;
++  var D = points[0].length
++  var result = dup([D])
++  var weights = barycentricCircumcenter(points)
++  for(var i=0; i<points.length; ++i) {
++    for(var j=0; j<D; ++j) {
++      result[j] += points[i][j] * weights[i]
++    }
+   }
++  return result
++}
+ 
+-  return out.strip();
+-};
+-
+-BN.prototype.mulTo = function mulTo(num, out) {
+-  var res;
+-  if (this.length + num.length < 63)
+-    res = this._smallMulTo(num, out);
+-  else
+-    res = this._bigMulTo(num, out);
+-  return res;
+-};
++circumcenter.barycenetric = barycentricCircumcenter
++module.exports = circumcenter
++},{"dup":93,"robust-linear-solve":417}],70:[function(require,module,exports){
++module.exports = circumradius
+ 
+-// Multiply `this` by `num`
+-BN.prototype.mul = function mul(num) {
+-  var out = new BN(null);
+-  out.words = new Array(this.length + num.length);
+-  return this.mulTo(num, out);
+-};
++var circumcenter = require('circumcenter')
+ 
+-// In-place Multiplication
+-BN.prototype.imul = function imul(num) {
+-  if (this.cmpn(0) === 0 || num.cmpn(0) === 0) {
+-    this.words[0] = 0;
+-    this.length = 1;
+-    return this;
++function circumradius(points) {
++  var center = circumcenter(points)
++  var avgDist = 0.0
++  for(var i=0; i<points.length; ++i) {
++    var p = points[i]
++    for(var j=0; j<center.length; ++j) {
++      avgDist += Math.pow(p[j] - center[j], 2)
++    }
+   }
++  return Math.sqrt(avgDist / points.length)
++}
++},{"circumcenter":69}],71:[function(require,module,exports){
++'use strict'
+ 
+-  var tlen = this.length;
+-  var nlen = num.length;
++module.exports = cleanPSLG
+ 
+-  this.sign = num.sign !== this.sign;
+-  this.length = this.length + num.length;
+-  this.words[this.length - 1] = 0;
++var UnionFind = require('union-find')
++var boxIntersect = require('box-intersect')
++var compareCell = require('compare-cell')
++var segseg = require('robust-segment-intersect')
++var rat = require('big-rat')
++var ratCmp = require('big-rat/cmp')
++var ratToFloat = require('big-rat/to-float')
++var ratVec = require('rat-vec')
++var nextafter = require('nextafter')
+ 
+-  for (var k = this.length - 2; k >= 0; k--) {
+-    // Sum all words with the same `i + j = k` and accumulate `carry`,
+-    // note that carry could be >= 0x3ffffff
+-    var carry = 0;
+-    var rword = 0;
+-    var maxJ = Math.min(k, nlen - 1);
+-    for (var j = Math.max(0, k - tlen + 1); j <= maxJ; j++) {
+-      var i = k - j;
+-      var a = this.words[i];
+-      var b = num.words[j];
+-      var r = a * b;
++var solveIntersection = require('./lib/rat-seg-intersect')
+ 
+-      var lo = r & 0x3ffffff;
+-      carry += (r / 0x4000000) | 0;
+-      lo += rword;
+-      rword = lo & 0x3ffffff;
+-      carry += lo >>> 26;
+-    }
+-    this.words[k] = rword;
+-    this.words[k + 1] += carry;
+-    carry = 0;
++//Bounds on a rational number when rounded to a float
++function boundRat(r) {
++  var f = ratToFloat(r)
++  var cmp = ratCmp(rat(f), r)
++  if(cmp < 0) {
++    return [f, nextafter(f, Infinity)]
++  } else if(cmp > 0) {
++    return [nextafter(f, -Infinity), f]
++  } else {
++    return [f, f]
+   }
++}
+ 
+-  // Propagate overflows
+-  var carry = 0;
+-  for (var i = 1; i < this.length; i++) {
+-    var w = this.words[i] + carry;
+-    this.words[i] = w & 0x3ffffff;
+-    carry = w >>> 26;
++//Convert a list of edges in a pslg to bounding boxes
++function boundEdges(points, edges) {
++  var bounds = new Array(edges.length)
++  for(var i=0; i<edges.length; ++i) {
++    var e = edges[i]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    bounds[i] = [
++      Math.min(a[0], b[0]),
++      Math.min(a[1], b[1]),
++      Math.max(a[0], b[0]),
++      Math.max(a[1], b[1]) ]
+   }
++  return bounds
++}
+ 
+-  return this.strip();
+-};
++//Convert a list of points into bounding boxes by duplicating coords
++function boundPoints(points) {
++  var bounds = new Array(points.length)
++  for(var i=0; i<points.length; ++i) {
++    var p = points[i]
++    bounds[i] = [ p[0], p[1], p[0], p[1] ]
++  }
++  return bounds
++}
+ 
+-BN.prototype.imuln = function imuln(num) {
+-  assert(typeof num === 'number');
++//Find all pairs of crossing edges in a pslg (given edge bounds)
++function getCrossings(points, edges, edgeBounds) {
++  var result = []
++  boxIntersect(edgeBounds, function(i, j) {
++    var e = edges[i]
++    var f = edges[j]
++    if(e[0] === f[0] || e[0] === f[1] ||
++       e[1] === f[0] || e[1] === f[1]) {
++         return
++    }
++    var a = points[e[0]]
++    var b = points[e[1]]
++    var c = points[f[0]]
++    var d = points[f[1]]
++    if(segseg(a, b, c, d)) {
++      result.push([i, j])
++    }
++  })
++  return result
++}
+ 
+-  // Carry
+-  var carry = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var w = this.words[i] * num;
+-    var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
+-    carry >>= 26;
+-    carry += (w / 0x4000000) | 0;
+-    // NOTE: lo is 27bit maximum
+-    carry += lo >>> 26;
+-    this.words[i] = lo & 0x3ffffff;
+-  }
++//Find all pairs of crossing vertices in a pslg (given edge/vert bounds)
++function getTJunctions(points, edges, edgeBounds, vertBounds) {
++  var result = []
++  boxIntersect(edgeBounds, vertBounds, function(i, v) {
++    var e = edges[i]
++    if(e[0] === v || e[1] === v) {
++      return
++    }
++    var p = points[v]
++    var a = points[e[0]]
++    var b = points[e[1]]
++    if(segseg(a, b, p, p)) {
++      result.push([i, v])
++    }
++  })
++  return result
++}
+ 
+-  if (carry !== 0) {
+-    this.words[i] = carry;
+-    this.length++;
++
++//Cut edges along crossings/tjunctions
++function cutEdges(floatPoints, edges, crossings, junctions, useColor) {
++
++  //Convert crossings into tjunctions by constructing rational points
++  var ratPoints = []
++  for(var i=0; i<crossings.length; ++i) {
++    var crossing = crossings[i]
++    var e = crossing[0]
++    var f = crossing[1]
++    var ee = edges[e]
++    var ef = edges[f]
++    var x = solveIntersection(
++      ratVec(floatPoints[ee[0]]),
++      ratVec(floatPoints[ee[1]]),
++      ratVec(floatPoints[ef[0]]),
++      ratVec(floatPoints[ef[1]]))
++    if(!x) {
++      //Segments are parallel, should already be handled by t-junctions
++      continue
++    }
++    var idx = ratPoints.length + floatPoints.length
++    ratPoints.push(x)
++    junctions.push([e, idx], [f, idx])
+   }
+ 
+-  return this;
+-};
++  //Sort tjunctions
++  function getPoint(idx) {
++    if(idx >= floatPoints.length) {
++      return ratPoints[idx-floatPoints.length]
++    }
++    var p = floatPoints[idx]
++    return [ rat(p[0]), rat(p[1]) ]
++  }
++  junctions.sort(function(a, b) {
++    if(a[0] !== b[0]) {
++      return a[0] - b[0]
++    }
++    var u = getPoint(a[1])
++    var v = getPoint(b[1])
++    return ratCmp(u[0], v[0]) || ratCmp(u[1], v[1])
++  })
+ 
+-BN.prototype.muln = function muln(num) {
+-  return this.clone().imuln(num);
+-};
++  //Split edges along junctions
++  for(var i=junctions.length-1; i>=0; --i) {
++    var junction = junctions[i]
++    var e = junction[0]
+ 
+-// `this` * `this`
+-BN.prototype.sqr = function sqr() {
+-  return this.mul(this);
+-};
++    var edge = edges[e]
++    var s = edge[0]
++    var t = edge[1]
+ 
+-// `this` * `this` in-place
+-BN.prototype.isqr = function isqr() {
+-  return this.mul(this);
+-};
++    //Check if edge is not lexicographically sorted
++    var a = floatPoints[s]
++    var b = floatPoints[t]
++    if(((a[0] - b[0]) || (a[1] - b[1])) < 0) {
++      var tmp = s
++      s = t
++      t = tmp
++    }
+ 
+-// Shift-left in-place
+-BN.prototype.ishln = function ishln(bits) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var r = bits % 26;
+-  var s = (bits - r) / 26;
+-  var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
++    //Split leading edge
++    edge[0] = s
++    var last = edge[1] = junction[1]
+ 
+-  if (r !== 0) {
+-    var carry = 0;
+-    for (var i = 0; i < this.length; i++) {
+-      var newCarry = this.words[i] & carryMask;
+-      var c = (this.words[i] - newCarry) << r;
+-      this.words[i] = c | carry;
+-      carry = newCarry >>> (26 - r);
++    //If we are grouping edges by color, remember to track data
++    var color
++    if(useColor) {
++      color = edge[2]
+     }
+-    if (carry) {
+-      this.words[i] = carry;
+-      this.length++;
++
++    //Split other edges
++    while(i > 0 && junctions[i-1][0] === e) {
++      var junction = junctions[--i]
++      var next = junction[1]
++      if(useColor) {
++        edges.push([last, next, color])
++      } else {
++        edges.push([last, next])
++      }
++      last = next
+     }
+-  }
+ 
+-  if (s !== 0) {
+-    for (var i = this.length - 1; i >= 0; i--)
+-      this.words[i + s] = this.words[i];
+-    for (var i = 0; i < s; i++)
+-      this.words[i] = 0;
+-    this.length += s;
++    //Add final edge
++    if(useColor) {
++      edges.push([last, t, color])
++    } else {
++      edges.push([last, t])
++    }
+   }
+ 
+-  return this.strip();
+-};
++  //Return constructed rational points
++  return ratPoints
++}
+ 
+-// Shift-right in-place
+-// NOTE: `hint` is a lowest bit before trailing zeroes
+-// NOTE: if `extended` is present - it will be filled with destroyed bits
+-BN.prototype.ishrn = function ishrn(bits, hint, extended) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var h;
+-  if (hint)
+-    h = (hint - (hint % 26)) / 26;
+-  else
+-    h = 0;
++//Merge overlapping points
++function dedupPoints(floatPoints, ratPoints, floatBounds) {
++  var numPoints = floatPoints.length + ratPoints.length
++  var uf        = new UnionFind(numPoints)
+ 
+-  var r = bits % 26;
+-  var s = Math.min((bits - r) / 26, this.length);
+-  var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
+-  var maskedWords = extended;
++  //Compute rational bounds
++  var bounds = floatBounds
++  for(var i=0; i<ratPoints.length; ++i) {
++    var p = ratPoints[i]
++    var xb = boundRat(p[0])
++    var yb = boundRat(p[1])
++    bounds.push([ xb[0], yb[0], xb[1], yb[1] ])
++    floatPoints.push([ ratToFloat(p[0]), ratToFloat(p[1]) ])
++  }
+ 
+-  h -= s;
+-  h = Math.max(0, h);
++  //Link all points with over lapping boxes
++  boxIntersect(bounds, function(i, j) {
++    uf.link(i, j)
++  })
+ 
+-  // Extended mode, copy masked part
+-  if (maskedWords) {
+-    for (var i = 0; i < s; i++)
+-      maskedWords.words[i] = this.words[i];
+-    maskedWords.length = s;
++  //Call find on each point to get a relabeling
++  var ptr = 0
++  var noDupes = true
++  var labels = new Array(numPoints)
++  for(var i=0; i<numPoints; ++i) {
++    var j = uf.find(i)
++    if(j === i) {
++      //If not a duplicate, then don't bother
++      labels[i] = ptr
++      floatPoints[ptr++] = floatPoints[i]
++    } else {
++      //Clear no-dupes flag, zero out label
++      noDupes = false
++      labels[i] = -1
++    }
+   }
++  floatPoints.length = ptr
+ 
+-  if (s === 0) {
+-    // No-op, we should not move anything at all
+-  } else if (this.length > s) {
+-    this.length -= s;
+-    for (var i = 0; i < this.length; i++)
+-      this.words[i] = this.words[i + s];
+-  } else {
+-    this.words[0] = 0;
+-    this.length = 1;
++  //If no duplicates, return null to signal termination
++  if(noDupes) {
++    return null
+   }
+ 
+-  var carry = 0;
+-  for (var i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
+-    var word = this.words[i];
+-    this.words[i] = (carry << (26 - r)) | (word >>> r);
+-    carry = word & mask;
++  //Do a second pass to fix up missing labels
++  for(var i=0; i<numPoints; ++i) {
++    if(labels[i] < 0) {
++      labels[i] = labels[uf.find(i)]
++    }
+   }
+ 
+-  // Push carried bits as a mask
+-  if (maskedWords && carry !== 0)
+-    maskedWords.words[maskedWords.length++] = carry;
++  //Return resulting union-find data structure
++  return labels
++}
+ 
+-  if (this.length === 0) {
+-    this.words[0] = 0;
+-    this.length = 1;
++function compareLex2(a,b) { return (a[0]-b[0]) || (a[1]-b[1]) }
++function compareLex3(a,b) {
++  var d = (a[0] - b[0]) || (a[1] - b[1])
++  if(d) {
++    return d
+   }
++  if(a[2] < b[2]) {
++    return -1
++  } else if(a[2] > b[2]) {
++    return 1
++  }
++  return 0
++}
+ 
+-  this.strip();
+-
+-  return this;
+-};
++//Remove duplicate edge labels
++function dedupEdges(edges, labels, useColor) {
++  if(edges.length === 0) {
++    return
++  }
++  if(labels) {
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      var a = labels[e[0]]
++      var b = labels[e[1]]
++      e[0] = Math.min(a, b)
++      e[1] = Math.max(a, b)
++    }
++  } else {
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      var a = e[0]
++      var b = e[1]
++      e[0] = Math.min(a, b)
++      e[1] = Math.max(a, b)
++    }
++  }
++  if(useColor) {
++    edges.sort(compareLex3)
++  } else {
++    edges.sort(compareLex2)
++  }
++  var ptr = 1
++  for(var i=1; i<edges.length; ++i) {
++    var prev = edges[i-1]
++    var next = edges[i]
++    if(next[0] === prev[0] && next[1] === prev[1] &&
++      (!useColor || next[2] === prev[2])) {
++      continue
++    }
++    edges[ptr++] = next
++  }
++  edges.length = ptr
++}
+ 
+-// Shift-left
+-BN.prototype.shln = function shln(bits) {
+-  return this.clone().ishln(bits);
+-};
++//Repeat until convergence
++function snapRound(points, edges, useColor) {
+ 
+-// Shift-right
+-BN.prototype.shrn = function shrn(bits) {
+-  return this.clone().ishrn(bits);
+-};
++  // 1. find edge crossings
++  var edgeBounds = boundEdges(points, edges)
++  var crossings  = getCrossings(points, edges, edgeBounds)
+ 
+-// Test if n bit is set
+-BN.prototype.testn = function testn(bit) {
+-  assert(typeof bit === 'number' && bit >= 0);
+-  var r = bit % 26;
+-  var s = (bit - r) / 26;
+-  var q = 1 << r;
++  // 2. find t-junctions
++  var vertBounds = boundPoints(points)
++  var tjunctions = getTJunctions(points, edges, edgeBounds, vertBounds)
+ 
+-  // Fast case: bit is much higher than all existing words
+-  if (this.length <= s) {
+-    return false;
+-  }
++  // 3. cut edges, construct rational points
++  var ratPoints  = cutEdges(points, edges, crossings, tjunctions, useColor)
+ 
+-  // Check bit and return
+-  var w = this.words[s];
++  // 4. dedupe verts
++  var labels     = dedupPoints(points, ratPoints, vertBounds)
+ 
+-  return !!(w & q);
+-};
++  // 6. dedupe edges
++  dedupEdges(edges, labels, useColor)
+ 
+-// Return only lowers bits of number (in-place)
+-BN.prototype.imaskn = function imaskn(bits) {
+-  assert(typeof bits === 'number' && bits >= 0);
+-  var r = bits % 26;
+-  var s = (bits - r) / 26;
++  // 5. check termination
++  if(!labels) {
++    return (crossings.length > 0 || tjunctions.length > 0)
++  }
+ 
+-  assert(!this.sign, 'imaskn works only with positive numbers');
++  // More iterations necessary
++  return true
++}
+ 
+-  if (r !== 0)
+-    s++;
+-  this.length = Math.min(s, this.length);
++//Main loop, runs PSLG clean up until completion
++function cleanPSLG(points, edges, colors) {
++  var modified = false
+ 
+-  if (r !== 0) {
+-    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
+-    this.words[this.length - 1] &= mask;
++  //If using colors, augment edges with color data
++  var prevEdges
++  if(colors) {
++    prevEdges = edges
++    var augEdges = new Array(edges.length)
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      augEdges[i] = [e[0], e[1], colors[i]]
++    }
++    edges = augEdges
+   }
+ 
+-  return this.strip();
+-};
+-
+-// Return only lowers bits of number
+-BN.prototype.maskn = function maskn(bits) {
+-  return this.clone().imaskn(bits);
+-};
+-
+-// Add plain number `num` to `this`
+-BN.prototype.iaddn = function iaddn(num) {
+-  assert(typeof num === 'number');
+-  if (num < 0)
+-    return this.isubn(-num);
++  //Run snap rounding until convergence
++  while(snapRound(points, edges, !!colors)) {
++    modified = true
++  }
+ 
+-  // Possible sign change
+-  if (this.sign) {
+-    if (this.length === 1 && this.words[0] < num) {
+-      this.words[0] = num - this.words[0];
+-      this.sign = false;
+-      return this;
++  //Strip color tags
++  if(!!colors && modified) {
++    prevEdges.length = 0
++    colors.length = 0
++    for(var i=0; i<edges.length; ++i) {
++      var e = edges[i]
++      prevEdges.push([e[0], e[1]])
++      colors.push(e[2])
+     }
+-
+-    this.sign = false;
+-    this.isubn(num);
+-    this.sign = true;
+-    return this;
+   }
+ 
+-  // Add without checks
+-  return this._iaddn(num);
+-};
++  return modified
++}
+ 
+-BN.prototype._iaddn = function _iaddn(num) {
+-  this.words[0] += num;
++},{"./lib/rat-seg-intersect":72,"big-rat":35,"big-rat/cmp":33,"big-rat/to-float":47,"box-intersect":52,"compare-cell":77,"nextafter":386,"rat-vec":406,"robust-segment-intersect":421,"union-find":450}],72:[function(require,module,exports){
++'use strict'
+ 
+-  // Carry
+-  for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
+-    this.words[i] -= 0x4000000;
+-    if (i === this.length - 1)
+-      this.words[i + 1] = 1;
+-    else
+-      this.words[i + 1]++;
+-  }
+-  this.length = Math.max(this.length, i + 1);
++//TODO: Move this to a separate module
+ 
+-  return this;
+-};
++module.exports = solveIntersection
+ 
+-// Subtract plain number `num` from `this`
+-BN.prototype.isubn = function isubn(num) {
+-  assert(typeof num === 'number');
+-  if (num < 0)
+-    return this.iaddn(-num);
++var ratMul = require('big-rat/mul')
++var ratDiv = require('big-rat/div')
++var ratSub = require('big-rat/sub')
++var ratSign = require('big-rat/sign')
++var rvSub = require('rat-vec/sub')
++var rvAdd = require('rat-vec/add')
++var rvMuls = require('rat-vec/muls')
+ 
+-  if (this.sign) {
+-    this.sign = false;
+-    this.iaddn(num);
+-    this.sign = true;
+-    return this;
+-  }
++var toFloat = require('big-rat/to-float')
+ 
+-  this.words[0] -= num;
++function ratPerp(a, b) {
++  return ratSub(ratMul(a[0], b[1]), ratMul(a[1], b[0]))
++}
+ 
+-  // Carry
+-  for (var i = 0; i < this.length && this.words[i] < 0; i++) {
+-    this.words[i] += 0x4000000;
+-    this.words[i + 1] -= 1;
+-  }
++//Solve for intersection
++//  x = a + t (b-a)
++//  (x - c) ^ (d-c) = 0
++//  (t * (b-a) + (a-c) ) ^ (d-c) = 0
++//  t * (b-a)^(d-c) = (d-c)^(a-c)
++//  t = (d-c)^(a-c) / (b-a)^(d-c)
+ 
+-  return this.strip();
+-};
++function solveIntersection(a, b, c, d) {
++  var ba = rvSub(b, a)
++  var dc = rvSub(d, c)
+ 
+-BN.prototype.addn = function addn(num) {
+-  return this.clone().iaddn(num);
+-};
++  var baXdc = ratPerp(ba, dc)
+ 
+-BN.prototype.subn = function subn(num) {
+-  return this.clone().isubn(num);
+-};
++  if(ratSign(baXdc) === 0) {
++    return null
++  }
+ 
+-BN.prototype.iabs = function iabs() {
+-  this.sign = false;
++  var ac = rvSub(a, c)
++  var dcXac = ratPerp(dc, ac)
+ 
+-  return this;
+-};
++  var t = ratDiv(dcXac, baXdc)
+ 
+-BN.prototype.abs = function abs() {
+-  return this.clone().iabs();
+-};
++  return rvAdd(a, rvMuls(ba, t))
++}
+ 
+-BN.prototype._ishlnsubmul = function _ishlnsubmul(num, mul, shift) {
+-  // Bigger storage is needed
+-  var len = num.length + shift;
+-  var i;
+-  if (this.words.length < len) {
+-    var t = new Array(len);
+-    for (var i = 0; i < this.length; i++)
+-      t[i] = this.words[i];
+-    this.words = t;
+-  } else {
+-    i = this.length;
+-  }
+-
+-  // Zeroify rest
+-  this.length = Math.max(this.length, len);
+-  for (; i < this.length; i++)
+-    this.words[i] = 0;
++},{"big-rat/div":34,"big-rat/mul":44,"big-rat/sign":45,"big-rat/sub":46,"big-rat/to-float":47,"rat-vec/add":405,"rat-vec/muls":407,"rat-vec/sub":408}],73:[function(require,module,exports){
++(function (Buffer){
++var clone = (function() {
++'use strict';
+ 
+-  var carry = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var w = this.words[i + shift] + carry;
+-    var right = num.words[i] * mul;
+-    w -= right & 0x3ffffff;
+-    carry = (w >> 26) - ((right / 0x4000000) | 0);
+-    this.words[i + shift] = w & 0x3ffffff;
+-  }
+-  for (; i < this.length - shift; i++) {
+-    var w = this.words[i + shift] + carry;
+-    carry = w >> 26;
+-    this.words[i + shift] = w & 0x3ffffff;
++/**
++ * Clones (copies) an Object using deep copying.
++ *
++ * This function supports circular references by default, but if you are certain
++ * there are no circular references in your object, you can save some CPU time
++ * by calling clone(obj, false).
++ *
++ * Caution: if `circular` is false and `parent` contains circular references,
++ * your program may enter an infinite loop and crash.
++ *
++ * @param `parent` - the object to be cloned
++ * @param `circular` - set to true if the object to be cloned may contain
++ *    circular references. (optional - true by default)
++ * @param `depth` - set to a number if the object is only to be cloned to
++ *    a particular depth. (optional - defaults to Infinity)
++ * @param `prototype` - sets the prototype to be used when cloning an object.
++ *    (optional - defaults to parent prototype).
++*/
++function clone(parent, circular, depth, prototype) {
++  var filter;
++  if (typeof circular === 'object') {
++    depth = circular.depth;
++    prototype = circular.prototype;
++    filter = circular.filter;
++    circular = circular.circular
+   }
++  // maintain two arrays for circular references, where corresponding parents
++  // and children have the same index
++  var allParents = [];
++  var allChildren = [];
+ 
+-  if (carry === 0)
+-    return this.strip();
+-
+-  // Subtraction overflow
+-  assert(carry === -1);
+-  carry = 0;
+-  for (var i = 0; i < this.length; i++) {
+-    var w = -this.words[i] + carry;
+-    carry = w >> 26;
+-    this.words[i] = w & 0x3ffffff;
+-  }
+-  this.sign = true;
++  var useBuffer = typeof Buffer != 'undefined';
+ 
+-  return this.strip();
+-};
++  if (typeof circular == 'undefined')
++    circular = true;
+ 
+-BN.prototype._wordDiv = function _wordDiv(num, mode) {
+-  var shift = this.length - num.length;
++  if (typeof depth == 'undefined')
++    depth = Infinity;
+ 
+-  var a = this.clone();
+-  var b = num;
++  // recurse this function so we don't reset allParents and allChildren
++  function _clone(parent, depth) {
++    // cloning null always returns null
++    if (parent === null)
++      return null;
+ 
+-  // Normalize
+-  var bhi = b.words[b.length - 1];
+-  var bhiBits = this._countBits(bhi);
+-  shift = 26 - bhiBits;
+-  if (shift !== 0) {
+-    b = b.shln(shift);
+-    a.ishln(shift);
+-    bhi = b.words[b.length - 1];
+-  }
++    if (depth == 0)
++      return parent;
+ 
+-  // Initialize quotient
+-  var m = a.length - b.length;
+-  var q;
++    var child;
++    var proto;
++    if (typeof parent != 'object') {
++      return parent;
++    }
+ 
+-  if (mode !== 'mod') {
+-    q = new BN(null);
+-    q.length = m + 1;
+-    q.words = new Array(q.length);
+-    for (var i = 0; i < q.length; i++)
+-      q.words[i] = 0;
+-  }
++    if (clone.__isArray(parent)) {
++      child = [];
++    } else if (clone.__isRegExp(parent)) {
++      child = new RegExp(parent.source, __getRegExpFlags(parent));
++      if (parent.lastIndex) child.lastIndex = parent.lastIndex;
++    } else if (clone.__isDate(parent)) {
++      child = new Date(parent.getTime());
++    } else if (useBuffer && Buffer.isBuffer(parent)) {
++      child = new Buffer(parent.length);
++      parent.copy(child);
++      return child;
++    } else {
++      if (typeof prototype == 'undefined') {
++        proto = Object.getPrototypeOf(parent);
++        child = Object.create(proto);
++      }
++      else {
++        child = Object.create(prototype);
++        proto = prototype;
++      }
++    }
+ 
+-  var diff = a.clone()._ishlnsubmul(b, 1, m);
+-  if (!diff.sign) {
+-    a = diff;
+-    if (q)
+-      q.words[m] = 1;
+-  }
++    if (circular) {
++      var index = allParents.indexOf(parent);
+ 
+-  for (var j = m - 1; j >= 0; j--) {
+-    var qj = a.words[b.length + j] * 0x4000000 + a.words[b.length + j - 1];
++      if (index != -1) {
++        return allChildren[index];
++      }
++      allParents.push(parent);
++      allChildren.push(child);
++    }
+ 
+-    // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
+-    // (0x7ffffff)
+-    qj = Math.min((qj / bhi) | 0, 0x3ffffff);
++    for (var i in parent) {
++      var attrs;
++      if (proto) {
++        attrs = Object.getOwnPropertyDescriptor(proto, i);
++      }
+ 
+-    a._ishlnsubmul(b, qj, j);
+-    while (a.sign) {
+-      qj--;
+-      a.sign = false;
+-      a._ishlnsubmul(b, 1, j);
+-      if (a.cmpn(0) !== 0)
+-        a.sign = !a.sign;
++      if (attrs && attrs.set == null) {
++        continue;
++      }
++      child[i] = _clone(parent[i], depth - 1);
+     }
+-    if (q)
+-      q.words[j] = qj;
++
++    return child;
+   }
+-  if (q)
+-    q.strip();
+-  a.strip();
+ 
+-  // Denormalize
+-  if (mode !== 'div' && shift !== 0)
+-    a.ishrn(shift);
+-  return { div: q ? q : null, mod: a };
+-};
++  return _clone(parent, depth);
++}
+ 
+-BN.prototype.divmod = function divmod(num, mode) {
+-  assert(num.cmpn(0) !== 0);
++/**
++ * Simple flat clone using prototype, accepts only objects, usefull for property
++ * override on FLAT configuration object (no nested props).
++ *
++ * USE WITH CAUTION! This may not behave as you wish if you do not know how this
++ * works.
++ */
++clone.clonePrototype = function clonePrototype(parent) {
++  if (parent === null)
++    return null;
+ 
+-  if (this.sign && !num.sign) {
+-    var res = this.neg().divmod(num, mode);
+-    var div;
+-    var mod;
+-    if (mode !== 'mod')
+-      div = res.div.neg();
+-    if (mode !== 'div')
+-      mod = res.mod.cmpn(0) === 0 ? res.mod : num.sub(res.mod);
+-    return {
+-      div: div,
+-      mod: mod
+-    };
+-  } else if (!this.sign && num.sign) {
+-    var res = this.divmod(num.neg(), mode);
+-    var div;
+-    if (mode !== 'mod')
+-      div = res.div.neg();
+-    return { div: div, mod: res.mod };
+-  } else if (this.sign && num.sign) {
+-    return this.neg().divmod(num.neg(), mode);
+-  }
++  var c = function () {};
++  c.prototype = parent;
++  return new c();
++};
+ 
+-  // Both numbers are positive at this point
++// private utility functions
+ 
+-  // Strip both numbers to approximate shift value
+-  if (num.length > this.length || this.cmp(num) < 0)
+-    return { div: new BN(0), mod: this };
++function __objToStr(o) {
++  return Object.prototype.toString.call(o);
++};
++clone.__objToStr = __objToStr;
+ 
+-  // Very short reduction
+-  if (num.length === 1) {
+-    if (mode === 'div')
+-      return { div: this.divn(num.words[0]), mod: null };
+-    else if (mode === 'mod')
+-      return { div: null, mod: new BN(this.modn(num.words[0])) };
+-    return {
+-      div: this.divn(num.words[0]),
+-      mod: new BN(this.modn(num.words[0]))
+-    };
+-  }
++function __isDate(o) {
++  return typeof o === 'object' && __objToStr(o) === '[object Date]';
++};
++clone.__isDate = __isDate;
+ 
+-  return this._wordDiv(num, mode);
++function __isArray(o) {
++  return typeof o === 'object' && __objToStr(o) === '[object Array]';
+ };
++clone.__isArray = __isArray;
+ 
+-// Find `this` / `num`
+-BN.prototype.div = function div(num) {
+-  return this.divmod(num, 'div').div;
++function __isRegExp(o) {
++  return typeof o === 'object' && __objToStr(o) === '[object RegExp]';
+ };
++clone.__isRegExp = __isRegExp;
+ 
+-// Find `this` % `num`
+-BN.prototype.mod = function mod(num) {
+-  return this.divmod(num, 'mod').mod;
++function __getRegExpFlags(re) {
++  var flags = '';
++  if (re.global) flags += 'g';
++  if (re.ignoreCase) flags += 'i';
++  if (re.multiline) flags += 'm';
++  return flags;
+ };
++clone.__getRegExpFlags = __getRegExpFlags;
+ 
+-// Find Round(`this` / `num`)
+-BN.prototype.divRound = function divRound(num) {
+-  var dm = this.divmod(num);
++return clone;
++})();
+ 
+-  // Fast case - exact division
+-  if (dm.mod.cmpn(0) === 0)
+-    return dm.div;
++if (typeof module === 'object' && module.exports) {
++  module.exports = clone;
++}
+ 
+-  var mod = dm.div.sign ? dm.mod.isub(num) : dm.mod;
++}).call(this,require("buffer").Buffer)
++},{"buffer":59}],74:[function(require,module,exports){
++module.exports={
++	"jet":[{"index":0,"rgb":[0,0,131]},{"index":0.125,"rgb":[0,60,170]},{"index":0.375,"rgb":[5,255,255]},{"index":0.625,"rgb":[255,255,0]},{"index":0.875,"rgb":[250,0,0]},{"index":1,"rgb":[128,0,0]}],
+ 
+-  var half = num.shrn(1);
+-  var r2 = num.andln(1);
+-  var cmp = mod.cmp(half);
++	"hsv":[{"index":0,"rgb":[255,0,0]},{"index":0.169,"rgb":[253,255,2]},{"index":0.173,"rgb":[247,255,2]},{"index":0.337,"rgb":[0,252,4]},{"index":0.341,"rgb":[0,252,10]},{"index":0.506,"rgb":[1,249,255]},{"index":0.671,"rgb":[2,0,253]},{"index":0.675,"rgb":[8,0,253]},{"index":0.839,"rgb":[255,0,251]},{"index":0.843,"rgb":[255,0,245]},{"index":1,"rgb":[255,0,6]}],
+ 
+-  // Round down
+-  if (cmp < 0 || r2 === 1 && cmp === 0)
+-    return dm.div;
++	"hot":[{"index":0,"rgb":[0,0,0]},{"index":0.3,"rgb":[230,0,0]},{"index":0.6,"rgb":[255,210,0]},{"index":1,"rgb":[255,255,255]}],
+ 
+-  // Round up
+-  return dm.div.sign ? dm.div.isubn(1) : dm.div.iaddn(1);
+-};
++	"cool":[{"index":0,"rgb":[0,255,255]},{"index":1,"rgb":[255,0,255]}],
+ 
+-BN.prototype.modn = function modn(num) {
+-  assert(num <= 0x3ffffff);
+-  var p = (1 << 26) % num;
++	"spring":[{"index":0,"rgb":[255,0,255]},{"index":1,"rgb":[255,255,0]}],
+ 
+-  var acc = 0;
+-  for (var i = this.length - 1; i >= 0; i--)
+-    acc = (p * acc + this.words[i]) % num;
++	"summer":[{"index":0,"rgb":[0,128,102]},{"index":1,"rgb":[255,255,102]}],
+ 
+-  return acc;
+-};
++	"autumn":[{"index":0,"rgb":[255,0,0]},{"index":1,"rgb":[255,255,0]}],
+ 
+-// In-place division by number
+-BN.prototype.idivn = function idivn(num) {
+-  assert(num <= 0x3ffffff);
++	"winter":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[0,255,128]}],
+ 
+-  var carry = 0;
+-  for (var i = this.length - 1; i >= 0; i--) {
+-    var w = this.words[i] + carry * 0x4000000;
+-    this.words[i] = (w / num) | 0;
+-    carry = w % num;
+-  }
++	"bone":[{"index":0,"rgb":[0,0,0]},{"index":0.376,"rgb":[84,84,116]},{"index":0.753,"rgb":[169,200,200]},{"index":1,"rgb":[255,255,255]}],
+ 
+-  return this.strip();
+-};
++	"copper":[{"index":0,"rgb":[0,0,0]},{"index":0.804,"rgb":[255,160,102]},{"index":1,"rgb":[255,199,127]}],
+ 
+-BN.prototype.divn = function divn(num) {
+-  return this.clone().idivn(num);
+-};
++	"greys":[{"index":0,"rgb":[0,0,0]},{"index":1,"rgb":[255,255,255]}],
+ 
+-BN.prototype.egcd = function egcd(p) {
+-  assert(!p.sign);
+-  assert(p.cmpn(0) !== 0);
++	"yignbu":[{"index":0,"rgb":[8,29,88]},{"index":0.125,"rgb":[37,52,148]},{"index":0.25,"rgb":[34,94,168]},{"index":0.375,"rgb":[29,145,192]},{"index":0.5,"rgb":[65,182,196]},{"index":0.625,"rgb":[127,205,187]},{"index":0.75,"rgb":[199,233,180]},{"index":0.875,"rgb":[237,248,217]},{"index":1,"rgb":[255,255,217]}],
+ 
+-  var x = this;
+-  var y = p.clone();
++	"greens":[{"index":0,"rgb":[0,68,27]},{"index":0.125,"rgb":[0,109,44]},{"index":0.25,"rgb":[35,139,69]},{"index":0.375,"rgb":[65,171,93]},{"index":0.5,"rgb":[116,196,118]},{"index":0.625,"rgb":[161,217,155]},{"index":0.75,"rgb":[199,233,192]},{"index":0.875,"rgb":[229,245,224]},{"index":1,"rgb":[247,252,245]}],
+ 
+-  if (x.sign)
+-    x = x.mod(p);
+-  else
+-    x = x.clone();
++	"yiorrd":[{"index":0,"rgb":[128,0,38]},{"index":0.125,"rgb":[189,0,38]},{"index":0.25,"rgb":[227,26,28]},{"index":0.375,"rgb":[252,78,42]},{"index":0.5,"rgb":[253,141,60]},{"index":0.625,"rgb":[254,178,76]},{"index":0.75,"rgb":[254,217,118]},{"index":0.875,"rgb":[255,237,160]},{"index":1,"rgb":[255,255,204]}],
+ 
+-  // A * x + B * y = x
+-  var A = new BN(1);
+-  var B = new BN(0);
++	"bluered":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[255,0,0]}],
+ 
+-  // C * x + D * y = y
+-  var C = new BN(0);
+-  var D = new BN(1);
++	"rdbu":[{"index":0,"rgb":[5,10,172]},{"index":0.35,"rgb":[106,137,247]},{"index":0.5,"rgb":[190,190,190]},{"index":0.6,"rgb":[220,170,132]},{"index":0.7,"rgb":[230,145,90]},{"index":1,"rgb":[178,10,28]}],
+ 
+-  var g = 0;
++	"picnic":[{"index":0,"rgb":[0,0,255]},{"index":0.1,"rgb":[51,153,255]},{"index":0.2,"rgb":[102,204,255]},{"index":0.3,"rgb":[153,204,255]},{"index":0.4,"rgb":[204,204,255]},{"index":0.5,"rgb":[255,255,255]},{"index":0.6,"rgb":[255,204,255]},{"index":0.7,"rgb":[255,153,255]},{"index":0.8,"rgb":[255,102,204]},{"index":0.9,"rgb":[255,102,102]},{"index":1,"rgb":[255,0,0]}],
+ 
+-  while (x.isEven() && y.isEven()) {
+-    x.ishrn(1);
+-    y.ishrn(1);
+-    ++g;
+-  }
++	"rainbow":[{"index":0,"rgb":[150,0,90]},{"index":0.125,"rgb":[0,0,200]},{"index":0.25,"rgb":[0,25,255]},{"index":0.375,"rgb":[0,152,255]},{"index":0.5,"rgb":[44,255,150]},{"index":0.625,"rgb":[151,255,0]},{"index":0.75,"rgb":[255,234,0]},{"index":0.875,"rgb":[255,111,0]},{"index":1,"rgb":[255,0,0]}],
+ 
+-  var yp = y.clone();
+-  var xp = x.clone();
++	"portland":[{"index":0,"rgb":[12,51,131]},{"index":0.25,"rgb":[10,136,186]},{"index":0.5,"rgb":[242,211,56]},{"index":0.75,"rgb":[242,143,56]},{"index":1,"rgb":[217,30,30]}],
+ 
+-  while (x.cmpn(0) !== 0) {
+-    while (x.isEven()) {
+-      x.ishrn(1);
+-      if (A.isEven() && B.isEven()) {
+-        A.ishrn(1);
+-        B.ishrn(1);
+-      } else {
+-        A.iadd(yp).ishrn(1);
+-        B.isub(xp).ishrn(1);
+-      }
+-    }
++	"blackbody":[{"index":0,"rgb":[0,0,0]},{"index":0.2,"rgb":[230,0,0]},{"index":0.4,"rgb":[230,210,0]},{"index":0.7,"rgb":[255,255,255]},{"index":1,"rgb":[160,200,255]}],
+ 
+-    while (y.isEven()) {
+-      y.ishrn(1);
+-      if (C.isEven() && D.isEven()) {
+-        C.ishrn(1);
+-        D.ishrn(1);
+-      } else {
+-        C.iadd(yp).ishrn(1);
+-        D.isub(xp).ishrn(1);
+-      }
+-    }
++	"earth":[{"index":0,"rgb":[0,0,130]},{"index":0.1,"rgb":[0,180,180]},{"index":0.2,"rgb":[40,210,40]},{"index":0.4,"rgb":[230,230,50]},{"index":0.6,"rgb":[120,70,20]},{"index":1,"rgb":[255,255,255]}],
+ 
+-    if (x.cmp(y) >= 0) {
+-      x.isub(y);
+-      A.isub(C);
+-      B.isub(D);
+-    } else {
+-      y.isub(x);
+-      C.isub(A);
+-      D.isub(B);
+-    }
+-  }
++	"electric":[{"index":0,"rgb":[0,0,0]},{"index":0.15,"rgb":[30,0,100]},{"index":0.4,"rgb":[120,0,100]},{"index":0.6,"rgb":[160,90,0]},{"index":0.8,"rgb":[230,200,0]},{"index":1,"rgb":[255,250,220]}],
+ 
+-  return {
+-    a: C,
+-    b: D,
+-    gcd: y.ishln(g)
+-  };
+-};
++	"alpha": [{"index":0, "rgb": [255,255,255,0]},{"index":0, "rgb": [255,255,255,1]}],
+ 
+-// This is reduced incarnation of the binary EEA
+-// above, designated to invert members of the
+-// _prime_ fields F(p) at a maximal speed
+-BN.prototype._invmp = function _invmp(p) {
+-  assert(!p.sign);
+-  assert(p.cmpn(0) !== 0);
++	"viridis": [{"index":0,"rgb":[68,1,84]},{"index":0.13,"rgb":[71,44,122]},{"index":0.25,"rgb":[59,81,139]},{"index":0.38,"rgb":[44,113,142]},{"index":0.5,"rgb":[33,144,141]},{"index":0.63,"rgb":[39,173,129]},{"index":0.75,"rgb":[92,200,99]},{"index":0.88,"rgb":[170,220,50]},{"index":1,"rgb":[253,231,37]}],
+ 
+-  var a = this;
+-  var b = p.clone();
++	"inferno": [{"index":0,"rgb":[0,0,4]},{"index":0.13,"rgb":[31,12,72]},{"index":0.25,"rgb":[85,15,109]},{"index":0.38,"rgb":[136,34,106]},{"index":0.5,"rgb":[186,54,85]},{"index":0.63,"rgb":[227,89,51]},{"index":0.75,"rgb":[249,140,10]},{"index":0.88,"rgb":[249,201,50]},{"index":1,"rgb":[252,255,164]}],
+ 
+-  if (a.sign)
+-    a = a.mod(p);
+-  else
+-    a = a.clone();
++	"magma": [{"index":0,"rgb":[0,0,4]},{"index":0.13,"rgb":[28,16,68]},{"index":0.25,"rgb":[79,18,123]},{"index":0.38,"rgb":[129,37,129]},{"index":0.5,"rgb":[181,54,122]},{"index":0.63,"rgb":[229,80,100]},{"index":0.75,"rgb":[251,135,97]},{"index":0.88,"rgb":[254,194,135]},{"index":1,"rgb":[252,253,191]}],
+ 
+-  var x1 = new BN(1);
+-  var x2 = new BN(0);
++	"plasma": [{"index":0,"rgb":[13,8,135]},{"index":0.13,"rgb":[75,3,161]},{"index":0.25,"rgb":[125,3,168]},{"index":0.38,"rgb":[168,34,150]},{"index":0.5,"rgb":[203,70,121]},{"index":0.63,"rgb":[229,107,93]},{"index":0.75,"rgb":[248,148,65]},{"index":0.88,"rgb":[253,195,40]},{"index":1,"rgb":[240,249,33]}],
+ 
+-  var delta = b.clone();
++	"warm": [{"index":0,"rgb":[125,0,179]},{"index":0.13,"rgb":[172,0,187]},{"index":0.25,"rgb":[219,0,170]},{"index":0.38,"rgb":[255,0,130]},{"index":0.5,"rgb":[255,63,74]},{"index":0.63,"rgb":[255,123,0]},{"index":0.75,"rgb":[234,176,0]},{"index":0.88,"rgb":[190,228,0]},{"index":1,"rgb":[147,255,0]}],
+ 
+-  while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
+-    while (a.isEven()) {
+-      a.ishrn(1);
+-      if (x1.isEven())
+-        x1.ishrn(1);
+-      else
+-        x1.iadd(delta).ishrn(1);
+-    }
+-    while (b.isEven()) {
+-      b.ishrn(1);
+-      if (x2.isEven())
+-        x2.ishrn(1);
+-      else
+-        x2.iadd(delta).ishrn(1);
+-    }
+-    if (a.cmp(b) >= 0) {
+-      a.isub(b);
+-      x1.isub(x2);
+-    } else {
+-      b.isub(a);
+-      x2.isub(x1);
+-    }
+-  }
+-  if (a.cmpn(1) === 0)
+-    return x1;
+-  else
+-    return x2;
+-};
++	"cool": [{"index":0,"rgb":[125,0,179]},{"index":0.13,"rgb":[116,0,218]},{"index":0.25,"rgb":[98,74,237]},{"index":0.38,"rgb":[68,146,231]},{"index":0.5,"rgb":[0,204,197]},{"index":0.63,"rgb":[0,247,146]},{"index":0.75,"rgb":[0,255,88]},{"index":0.88,"rgb":[40,255,8]},{"index":1,"rgb":[147,255,0]}],
+ 
+-BN.prototype.gcd = function gcd(num) {
+-  if (this.cmpn(0) === 0)
+-    return num.clone();
+-  if (num.cmpn(0) === 0)
+-    return this.clone();
++	"rainbow-soft": [{"index":0,"rgb":[125,0,179]},{"index":0.1,"rgb":[199,0,180]},{"index":0.2,"rgb":[255,0,121]},{"index":0.3,"rgb":[255,108,0]},{"index":0.4,"rgb":[222,194,0]},{"index":0.5,"rgb":[150,255,0]},{"index":0.6,"rgb":[0,255,55]},{"index":0.7,"rgb":[0,246,150]},{"index":0.8,"rgb":[50,167,222]},{"index":0.9,"rgb":[103,51,235]},{"index":1,"rgb":[124,0,186]}],
+ 
+-  var a = this.clone();
+-  var b = num.clone();
+-  a.sign = false;
+-  b.sign = false;
++	"bathymetry": [{"index":0,"rgb":[40,26,44]},{"index":0.13,"rgb":[59,49,90]},{"index":0.25,"rgb":[64,76,139]},{"index":0.38,"rgb":[63,110,151]},{"index":0.5,"rgb":[72,142,158]},{"index":0.63,"rgb":[85,174,163]},{"index":0.75,"rgb":[120,206,163]},{"index":0.88,"rgb":[187,230,172]},{"index":1,"rgb":[253,254,204]}],
+ 
+-  // Remove common factor of two
+-  for (var shift = 0; a.isEven() && b.isEven(); shift++) {
+-    a.ishrn(1);
+-    b.ishrn(1);
+-  }
++	"cdom": [{"index":0,"rgb":[47,15,62]},{"index":0.13,"rgb":[87,23,86]},{"index":0.25,"rgb":[130,28,99]},{"index":0.38,"rgb":[171,41,96]},{"index":0.5,"rgb":[206,67,86]},{"index":0.63,"rgb":[230,106,84]},{"index":0.75,"rgb":[242,149,103]},{"index":0.88,"rgb":[249,193,135]},{"index":1,"rgb":[254,237,176]}],
+ 
+-  do {
+-    while (a.isEven())
+-      a.ishrn(1);
+-    while (b.isEven())
+-      b.ishrn(1);
++	"chlorophyll": [{"index":0,"rgb":[18,36,20]},{"index":0.13,"rgb":[25,63,41]},{"index":0.25,"rgb":[24,91,59]},{"index":0.38,"rgb":[13,119,72]},{"index":0.5,"rgb":[18,148,80]},{"index":0.63,"rgb":[80,173,89]},{"index":0.75,"rgb":[132,196,122]},{"index":0.88,"rgb":[175,221,162]},{"index":1,"rgb":[215,249,208]}],
+ 
+-    var r = a.cmp(b);
+-    if (r < 0) {
+-      // Swap `a` and `b` to make `a` always bigger than `b`
+-      var t = a;
+-      a = b;
+-      b = t;
+-    } else if (r === 0 || b.cmpn(1) === 0) {
+-      break;
+-    }
++	"density": [{"index":0,"rgb":[54,14,36]},{"index":0.13,"rgb":[89,23,80]},{"index":0.25,"rgb":[110,45,132]},{"index":0.38,"rgb":[120,77,178]},{"index":0.5,"rgb":[120,113,213]},{"index":0.63,"rgb":[115,151,228]},{"index":0.75,"rgb":[134,185,227]},{"index":0.88,"rgb":[177,214,227]},{"index":1,"rgb":[230,241,241]}],
+ 
+-    a.isub(b);
+-  } while (true);
++	"freesurface-blue": [{"index":0,"rgb":[30,4,110]},{"index":0.13,"rgb":[47,14,176]},{"index":0.25,"rgb":[41,45,236]},{"index":0.38,"rgb":[25,99,212]},{"index":0.5,"rgb":[68,131,200]},{"index":0.63,"rgb":[114,156,197]},{"index":0.75,"rgb":[157,181,203]},{"index":0.88,"rgb":[200,208,216]},{"index":1,"rgb":[241,237,236]}],
+ 
+-  return b.ishln(shift);
+-};
++	"freesurface-red": [{"index":0,"rgb":[60,9,18]},{"index":0.13,"rgb":[100,17,27]},{"index":0.25,"rgb":[142,20,29]},{"index":0.38,"rgb":[177,43,27]},{"index":0.5,"rgb":[192,87,63]},{"index":0.63,"rgb":[205,125,105]},{"index":0.75,"rgb":[216,162,148]},{"index":0.88,"rgb":[227,199,193]},{"index":1,"rgb":[241,237,236]}],
+ 
+-// Invert number in the field F(num)
+-BN.prototype.invm = function invm(num) {
+-  return this.egcd(num).a.mod(num);
+-};
++	"oxygen": [{"index":0,"rgb":[64,5,5]},{"index":0.13,"rgb":[106,6,15]},{"index":0.25,"rgb":[144,26,7]},{"index":0.38,"rgb":[168,64,3]},{"index":0.5,"rgb":[188,100,4]},{"index":0.63,"rgb":[206,136,11]},{"index":0.75,"rgb":[220,174,25]},{"index":0.88,"rgb":[231,215,44]},{"index":1,"rgb":[248,254,105]}],
+ 
+-BN.prototype.isEven = function isEven() {
+-  return (this.words[0] & 1) === 0;
+-};
++	"par": [{"index":0,"rgb":[51,20,24]},{"index":0.13,"rgb":[90,32,35]},{"index":0.25,"rgb":[129,44,34]},{"index":0.38,"rgb":[159,68,25]},{"index":0.5,"rgb":[182,99,19]},{"index":0.63,"rgb":[199,134,22]},{"index":0.75,"rgb":[212,171,35]},{"index":0.88,"rgb":[221,210,54]},{"index":1,"rgb":[225,253,75]}],
+ 
+-BN.prototype.isOdd = function isOdd() {
+-  return (this.words[0] & 1) === 1;
+-};
++	"phase": [{"index":0,"rgb":[145,105,18]},{"index":0.13,"rgb":[184,71,38]},{"index":0.25,"rgb":[186,58,115]},{"index":0.38,"rgb":[160,71,185]},{"index":0.5,"rgb":[110,97,218]},{"index":0.63,"rgb":[50,123,164]},{"index":0.75,"rgb":[31,131,110]},{"index":0.88,"rgb":[77,129,34]},{"index":1,"rgb":[145,105,18]}],
+ 
+-// And first word and num
+-BN.prototype.andln = function andln(num) {
+-  return this.words[0] & num;
+-};
++	"salinity": [{"index":0,"rgb":[42,24,108]},{"index":0.13,"rgb":[33,50,162]},{"index":0.25,"rgb":[15,90,145]},{"index":0.38,"rgb":[40,118,137]},{"index":0.5,"rgb":[59,146,135]},{"index":0.63,"rgb":[79,175,126]},{"index":0.75,"rgb":[120,203,104]},{"index":0.88,"rgb":[193,221,100]},{"index":1,"rgb":[253,239,154]}],
+ 
+-// Increment at the bit position in-line
+-BN.prototype.bincn = function bincn(bit) {
+-  assert(typeof bit === 'number');
+-  var r = bit % 26;
+-  var s = (bit - r) / 26;
+-  var q = 1 << r;
++	"temperature": [{"index":0,"rgb":[4,35,51]},{"index":0.13,"rgb":[23,51,122]},{"index":0.25,"rgb":[85,59,157]},{"index":0.38,"rgb":[129,79,143]},{"index":0.5,"rgb":[175,95,130]},{"index":0.63,"rgb":[222,112,101]},{"index":0.75,"rgb":[249,146,66]},{"index":0.88,"rgb":[249,196,65]},{"index":1,"rgb":[232,250,91]}],
+ 
+-  // Fast case: bit is much higher than all existing words
+-  if (this.length <= s) {
+-    for (var i = this.length; i < s + 1; i++)
+-      this.words[i] = 0;
+-    this.words[s] |= q;
+-    this.length = s + 1;
+-    return this;
+-  }
++	"turbidity": [{"index":0,"rgb":[34,31,27]},{"index":0.13,"rgb":[65,50,41]},{"index":0.25,"rgb":[98,69,52]},{"index":0.38,"rgb":[131,89,57]},{"index":0.5,"rgb":[161,112,59]},{"index":0.63,"rgb":[185,140,66]},{"index":0.75,"rgb":[202,174,88]},{"index":0.88,"rgb":[216,209,126]},{"index":1,"rgb":[233,246,171]}],
+ 
+-  // Add bit and propagate, if needed
+-  var carry = q;
+-  for (var i = s; carry !== 0 && i < this.length; i++) {
+-    var w = this.words[i];
+-    w += carry;
+-    carry = w >>> 26;
+-    w &= 0x3ffffff;
+-    this.words[i] = w;
+-  }
+-  if (carry !== 0) {
+-    this.words[i] = carry;
+-    this.length++;
+-  }
+-  return this;
++	"velocity-blue": [{"index":0,"rgb":[17,32,64]},{"index":0.13,"rgb":[35,52,116]},{"index":0.25,"rgb":[29,81,156]},{"index":0.38,"rgb":[31,113,162]},{"index":0.5,"rgb":[50,144,169]},{"index":0.63,"rgb":[87,173,176]},{"index":0.75,"rgb":[149,196,189]},{"index":0.88,"rgb":[203,221,211]},{"index":1,"rgb":[254,251,230]}],
++
++	"velocity-green": [{"index":0,"rgb":[23,35,19]},{"index":0.13,"rgb":[24,64,38]},{"index":0.25,"rgb":[11,95,45]},{"index":0.38,"rgb":[39,123,35]},{"index":0.5,"rgb":[95,146,12]},{"index":0.63,"rgb":[152,165,18]},{"index":0.75,"rgb":[201,186,69]},{"index":0.88,"rgb":[233,216,137]},{"index":1,"rgb":[255,253,205]}],
++
++	"cubehelix": [{"index":0,"rgb":[0,0,0]},{"index":0.07,"rgb":[22,5,59]},{"index":0.13,"rgb":[60,4,105]},{"index":0.2,"rgb":[109,1,135]},{"index":0.27,"rgb":[161,0,147]},{"index":0.33,"rgb":[210,2,142]},{"index":0.4,"rgb":[251,11,123]},{"index":0.47,"rgb":[255,29,97]},{"index":0.53,"rgb":[255,54,69]},{"index":0.6,"rgb":[255,85,46]},{"index":0.67,"rgb":[255,120,34]},{"index":0.73,"rgb":[255,157,37]},{"index":0.8,"rgb":[241,191,57]},{"index":0.87,"rgb":[224,220,93]},{"index":0.93,"rgb":[218,241,142]},{"index":1,"rgb":[227,253,198]}]
+ };
+ 
+-BN.prototype.cmpn = function cmpn(num) {
+-  var sign = num < 0;
+-  if (sign)
+-    num = -num;
++},{}],75:[function(require,module,exports){
++/*
++ * Ben Postlethwaite
++ * January 2013
++ * License MIT
++ */
++'use strict';
+ 
+-  if (this.sign && !sign)
+-    return -1;
+-  else if (!this.sign && sign)
+-    return 1;
++var at = require('arraytools');
++var clone = require('clone');
++var colorScale = require('./colorScales');
+ 
+-  num &= 0x3ffffff;
+-  this.strip();
++module.exports = createColormap;
+ 
+-  var res;
+-  if (this.length > 1) {
+-    res = 1;
+-  } else {
+-    var w = this.words[0];
+-    res = w === num ? 0 : w < num ? -1 : 1;
+-  }
+-  if (this.sign)
+-    res = -res;
+-  return res;
+-};
+-
+-// Compare two numbers and return:
+-// 1 - if `this` > `num`
+-// 0 - if `this` == `num`
+-// -1 - if `this` < `num`
+-BN.prototype.cmp = function cmp(num) {
+-  if (this.sign && !num.sign)
+-    return -1;
+-  else if (!this.sign && num.sign)
+-    return 1;
++function createColormap (spec) {
++    /*
++     * Default Options
++     */
++    var indicies, rgba, fromrgba, torgba,
++        nsteps, cmap, colormap, format,
++        nshades, colors, alpha, index, i,
++        r = [],
++        g = [],
++        b = [],
++        a = [];
+ 
+-  var res = this.ucmp(num);
+-  if (this.sign)
+-    return -res;
+-  else
+-    return res;
+-};
++    if ( !at.isPlainObject(spec) ) spec = {};
+ 
+-// Unsigned comparison
+-BN.prototype.ucmp = function ucmp(num) {
+-  // At this point both numbers have the same sign
+-  if (this.length > num.length)
+-    return 1;
+-  else if (this.length < num.length)
+-    return -1;
++    nshades = spec.nshades || 72;
++    format = spec.format || 'hex';
+ 
+-  var res = 0;
+-  for (var i = this.length - 1; i >= 0; i--) {
+-    var a = this.words[i];
+-    var b = num.words[i];
++    colormap = spec.colormap;
++    if (!colormap) colormap = 'jet';
+ 
+-    if (a === b)
+-      continue;
+-    if (a < b)
+-      res = -1;
+-    else if (a > b)
+-      res = 1;
+-    break;
+-  }
+-  return res;
+-};
++    if (typeof colormap === 'string') {
++        colormap = colormap.toLowerCase();
+ 
+-//
+-// A reduce context, could be using montgomery or something better, depending
+-// on the `m` itself.
+-//
+-BN.red = function red(num) {
+-  return new Red(num);
+-};
++        if (!colorScale[colormap]) {
++            throw Error(colormap + ' not a supported colorscale');
++        }
+ 
+-BN.prototype.toRed = function toRed(ctx) {
+-  assert(!this.red, 'Already a number in reduction context');
+-  assert(!this.sign, 'red works only with positives');
+-  return ctx.convertTo(this)._forceRed(ctx);
+-};
++        cmap = clone(colorScale[colormap]);
+ 
+-BN.prototype.fromRed = function fromRed() {
+-  assert(this.red, 'fromRed works only with numbers in reduction context');
+-  return this.red.convertFrom(this);
+-};
++    } else if (Array.isArray(colormap)) {
++        cmap = clone(colormap);
+ 
+-BN.prototype._forceRed = function _forceRed(ctx) {
+-  this.red = ctx;
+-  return this;
+-};
++    } else {
++        throw Error('unsupported colormap option', colormap);
++    }
+ 
+-BN.prototype.forceRed = function forceRed(ctx) {
+-  assert(!this.red, 'Already a number in reduction context');
+-  return this._forceRed(ctx);
+-};
++    if (cmap.length > nshades) {
++        throw new Error(
++            colormap+' map requires nshades to be at least size '+cmap.length
++        );
++    }
+ 
+-BN.prototype.redAdd = function redAdd(num) {
+-  assert(this.red, 'redAdd works only with red numbers');
+-  return this.red.add(this, num);
+-};
++    if (!Array.isArray(spec.alpha)) {
+ 
+-BN.prototype.redIAdd = function redIAdd(num) {
+-  assert(this.red, 'redIAdd works only with red numbers');
+-  return this.red.iadd(this, num);
+-};
++        if (typeof spec.alpha === 'number') {
++            alpha = [spec.alpha, spec.alpha];
+ 
+-BN.prototype.redSub = function redSub(num) {
+-  assert(this.red, 'redSub works only with red numbers');
+-  return this.red.sub(this, num);
+-};
++        } else {
++            alpha = [1, 1];
++        }
+ 
+-BN.prototype.redISub = function redISub(num) {
+-  assert(this.red, 'redISub works only with red numbers');
+-  return this.red.isub(this, num);
+-};
++    } else if (spec.alpha.length !== 2) {
++        alpha = [1, 1];
+ 
+-BN.prototype.redShl = function redShl(num) {
+-  assert(this.red, 'redShl works only with red numbers');
+-  return this.red.shl(this, num);
+-};
++    } else {
++        alpha = clone(spec.alpha);
++    }
+ 
+-BN.prototype.redMul = function redMul(num) {
+-  assert(this.red, 'redMul works only with red numbers');
+-  this.red._verify2(this, num);
+-  return this.red.mul(this, num);
+-};
++    /*
++     * map index points from 0->1 to 0 -> n-1
++     */
++    indicies = cmap.map(function(c) {
++        return Math.round(c.index * nshades);
++    });
+ 
+-BN.prototype.redIMul = function redIMul(num) {
+-  assert(this.red, 'redMul works only with red numbers');
+-  this.red._verify2(this, num);
+-  return this.red.imul(this, num);
+-};
++    /*
++     * Add alpha channel to the map
++     */
++    if (alpha[0] < 0) alpha[0] = 0;
++    if (alpha[1] < 0) alpha[0] = 0;
++    if (alpha[0] > 1) alpha[0] = 1;
++    if (alpha[1] > 1) alpha[0] = 1;
+ 
+-BN.prototype.redSqr = function redSqr() {
+-  assert(this.red, 'redSqr works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.sqr(this);
+-};
++    for (i = 0; i < indicies.length; ++i) {
++        index = cmap[i].index;
++        rgba = cmap[i].rgb;
+ 
+-BN.prototype.redISqr = function redISqr() {
+-  assert(this.red, 'redISqr works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.isqr(this);
+-};
++        // if user supplies their own map use it
++        if (rgba.length === 4 && rgba[3] >= 0 && rgba[3] <= 1) continue;
++        rgba[3] = alpha[0] + (alpha[1] - alpha[0])*index;
++    }
+ 
+-// Square root over p
+-BN.prototype.redSqrt = function redSqrt() {
+-  assert(this.red, 'redSqrt works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.sqrt(this);
+-};
++    /*
++     * map increasing linear values between indicies to
++     * linear steps in colorvalues
++     */
++    for (i = 0; i < indicies.length-1; ++i) {
++        nsteps = indicies[i+1] - indicies[i];
++        fromrgba = cmap[i].rgb;
++        torgba = cmap[i+1].rgb;
++        r = r.concat(at.linspace(fromrgba[0], torgba[0], nsteps ) );
++        g = g.concat(at.linspace(fromrgba[1], torgba[1], nsteps ) );
++        b = b.concat(at.linspace(fromrgba[2], torgba[2], nsteps ) );
++        a = a.concat(at.linspace(fromrgba[3], torgba[3], nsteps ) );
++    }
+ 
+-BN.prototype.redInvm = function redInvm() {
+-  assert(this.red, 'redInvm works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.invm(this);
+-};
++    r = r.map( Math.round );
++    g = g.map( Math.round );
++    b = b.map( Math.round );
+ 
+-// Return negative clone of `this` % `red modulo`
+-BN.prototype.redNeg = function redNeg() {
+-  assert(this.red, 'redNeg works only with red numbers');
+-  this.red._verify1(this);
+-  return this.red.neg(this);
+-};
++    colors = at.zip(r, g, b, a);
+ 
+-BN.prototype.redPow = function redPow(num) {
+-  assert(this.red && !num.red, 'redPow(normalNum)');
+-  this.red._verify1(this);
+-  return this.red.pow(this, num);
+-};
++    if (format === 'hex') colors = colors.map( rgb2hex );
++    if (format === 'rgbaString') colors = colors.map( rgbaStr );
+ 
+-// Prime numbers with efficient reduction
+-var primes = {
+-  k256: null,
+-  p224: null,
+-  p192: null,
+-  p25519: null
++    return colors;
+ };
+ 
+-// Pseudo-Mersenne prime
+-function MPrime(name, p) {
+-  // P = 2 ^ N - K
+-  this.name = name;
+-  this.p = new BN(p, 16);
+-  this.n = this.p.bitLength();
+-  this.k = new BN(1).ishln(this.n).isub(this.p);
+ 
+-  this.tmp = this._tmp();
++function rgb2hex (rgba) {
++    var dig, hex = '#';
++    for (var i = 0; i < 3; ++i) {
++        dig = rgba[i];
++        dig = dig.toString(16);
++        hex += ('00' + dig).substr( dig.length );
++    }
++    return hex;
+ }
+ 
+-MPrime.prototype._tmp = function _tmp() {
+-  var tmp = new BN(null);
+-  tmp.words = new Array(Math.ceil(this.n / 13));
+-  return tmp;
+-};
++function rgbaStr (rgba) {
++    return 'rgba(' + rgba.join(',') + ')';
++}
+ 
+-MPrime.prototype.ireduce = function ireduce(num) {
+-  // Assumes that `num` is less than `P^2`
+-  // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
+-  var r = num;
+-  var rlen;
++},{"./colorScales":74,"arraytools":28,"clone":73}],76:[function(require,module,exports){
++"use strict"
+ 
+-  do {
+-    this.split(r, this.tmp);
+-    r = this.imulK(r);
+-    r = r.iadd(this.tmp);
+-    rlen = r.bitLength();
+-  } while (rlen > this.n);
++module.exports = compareAngle
+ 
+-  var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
+-  if (cmp === 0) {
+-    r.words[0] = 0;
+-    r.length = 1;
+-  } else if (cmp > 0) {
+-    r.isub(this.p);
+-  } else {
+-    r.strip();
+-  }
++var orient = require("robust-orientation")
++var sgn = require("signum")
++var twoSum = require("two-sum")
++var robustProduct = require("robust-product")
++var robustSum = require("robust-sum")
+ 
+-  return r;
+-};
++function testInterior(a, b, c) {
++  var x0 = twoSum(a[0], -b[0])
++  var y0 = twoSum(a[1], -b[1])
++  var x1 = twoSum(c[0], -b[0])
++  var y1 = twoSum(c[1], -b[1])
+ 
+-MPrime.prototype.split = function split(input, out) {
+-  input.ishrn(this.n, 0, out);
+-};
++  var d = robustSum(
++    robustProduct(x0, x1),
++    robustProduct(y0, y1))
+ 
+-MPrime.prototype.imulK = function imulK(num) {
+-  return num.imul(this.k);
+-};
++  return d[d.length-1] >= 0
++}
+ 
+-function K256() {
+-  MPrime.call(
+-    this,
+-    'k256',
+-    'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
++function compareAngle(a, b, c, d) {
++  var bcd = orient(b, c, d)
++  if(bcd === 0) {
++    //Handle degenerate cases
++    var sabc = sgn(orient(a, b, c))
++    var sabd = sgn(orient(a, b, d))
++    if(sabc === sabd) {
++      if(sabc === 0) {
++        var ic = testInterior(a, b, c)
++        var id = testInterior(a, b, d)
++        if(ic === id) {
++          return 0
++        } else if(ic) {
++          return 1
++        } else {
++          return -1
++        }
++      }
++      return 0
++    } else if(sabd === 0) {
++      if(sabc > 0) {
++        return -1
++      } else if(testInterior(a, b, d)) {
++        return -1
++      } else {
++        return 1
++      }
++    } else if(sabc === 0) {
++      if(sabd > 0) {
++        return 1
++      } else if(testInterior(a, b, c)) {
++        return 1
++      } else {
++        return -1
++      }
++    }
++    return sgn(sabd - sabc)
++  }
++  var abc = orient(a, b, c)
++  if(abc > 0) {
++    if(bcd > 0 && orient(a, b, d) > 0) {
++      return 1
++    }
++    return -1
++  } else if(abc < 0) {
++    if(bcd > 0 || orient(a, b, d) > 0) {
++      return 1
++    }
++    return -1
++  } else {
++    var abd = orient(a, b, d)
++    if(abd > 0) {
++      return 1
++    } else {
++      if(testInterior(a, b, c)) {
++        return 1
++      } else {
++        return -1
++      }
++    }
++  }
+ }
+-inherits(K256, MPrime);
++},{"robust-orientation":418,"robust-product":419,"robust-sum":423,"signum":425,"two-sum":448}],77:[function(require,module,exports){
++module.exports = compareCells
+ 
+-K256.prototype.split = function split(input, output) {
+-  // 256 = 9 * 26 + 22
+-  var mask = 0x3fffff;
++var min = Math.min
+ 
+-  var outLen = Math.min(input.length, 9);
+-  for (var i = 0; i < outLen; i++)
+-    output.words[i] = input.words[i];
+-  output.length = outLen;
++function compareInt(a, b) {
++  return a - b
++}
+ 
+-  if (input.length <= 9) {
+-    input.words[0] = 0;
+-    input.length = 1;
+-    return;
++function compareCells(a, b) {
++  var n = a.length
++    , t = a.length - b.length
++  if(t) {
++    return t
+   }
+-
+-  // Shift by 9 limbs
+-  var prev = input.words[9];
+-  output.words[output.length++] = prev & mask;
+-
+-  for (var i = 10; i < input.length; i++) {
+-    var next = input.words[i];
+-    input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
+-    prev = next;
++  switch(n) {
++    case 0:
++      return 0
++    case 1:
++      return a[0] - b[0]
++    case 2:
++      return (a[0]+a[1]-b[0]-b[1]) ||
++             min(a[0],a[1]) - min(b[0],b[1])
++    case 3:
++      var l1 = a[0]+a[1]
++        , m1 = b[0]+b[1]
++      t = l1+a[2] - (m1+b[2])
++      if(t) {
++        return t
++      }
++      var l0 = min(a[0], a[1])
++        , m0 = min(b[0], b[1])
++      return min(l0, a[2]) - min(m0, b[2]) ||
++             min(l0+a[2], l1) - min(m0+b[2], m1)
++    case 4:
++      var aw=a[0], ax=a[1], ay=a[2], az=a[3]
++        , bw=b[0], bx=b[1], by=b[2], bz=b[3]
++      return (aw+ax+ay+az)-(bw+bx+by+bz) ||
++             min(aw,ax,ay,az)-min(bw,bx,by,bz,bw) ||
++             min(aw+ax,aw+ay,aw+az,ax+ay,ax+az,ay+az) -
++               min(bw+bx,bw+by,bw+bz,bx+by,bx+bz,by+bz) ||
++             min(aw+ax+ay,aw+ax+az,aw+ay+az,ax+ay+az) -
++               min(bw+bx+by,bw+bx+bz,bw+by+bz,bx+by+bz)
++    default:
++      var as = a.slice().sort(compareInt)
++      var bs = b.slice().sort(compareInt)
++      for(var i=0; i<n; ++i) {
++        t = as[i] - bs[i]
++        if(t) {
++          return t
++        }
++      }
++      return 0
+   }
+-  input.words[i - 10] = prev >>> 22;
+-  input.length -= 9;
+-};
++}
+ 
+-K256.prototype.imulK = function imulK(num) {
+-  // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
+-  num.words[num.length] = 0;
+-  num.words[num.length + 1] = 0;
+-  num.length += 2;
++},{}],78:[function(require,module,exports){
++'use strict'
+ 
+-  // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
+-  var hi;
+-  var lo = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var w = num.words[i];
+-    hi = w * 0x40;
+-    lo += w * 0x3d1;
+-    hi += (lo / 0x4000000) | 0;
+-    lo &= 0x3ffffff;
++var compareCells = require('compare-cell')
++var parity = require('cell-orientation')
+ 
+-    num.words[i] = lo;
++module.exports = compareOrientedCells
+ 
+-    lo = hi;
+-  }
++function compareOrientedCells(a, b) {
++  return compareCells(a, b) || parity(a) - parity(b)
++}
+ 
+-  // Fast length reduction
+-  if (num.words[num.length - 1] === 0) {
+-    num.length--;
+-    if (num.words[num.length - 1] === 0)
+-      num.length--;
+-  }
+-  return num;
+-};
++},{"cell-orientation":68,"compare-cell":77}],79:[function(require,module,exports){
++"use strict"
+ 
+-function P224() {
+-  MPrime.call(
+-    this,
+-    'p224',
+-    'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
+-}
+-inherits(P224, MPrime);
++var convexHull1d = require('./lib/ch1d')
++var convexHull2d = require('./lib/ch2d')
++var convexHullnd = require('./lib/chnd')
+ 
+-function P192() {
+-  MPrime.call(
+-    this,
+-    'p192',
+-    'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
+-}
+-inherits(P192, MPrime);
++module.exports = convexHull
+ 
+-function P25519() {
+-  // 2 ^ 255 - 19
+-  MPrime.call(
+-    this,
+-    '25519',
+-    '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
++function convexHull(points) {
++  var n = points.length
++  if(n === 0) {
++    return []
++  } else if(n === 1) {
++    return [[0]]
++  }
++  var d = points[0].length
++  if(d === 0) {
++    return []
++  } else if(d === 1) {
++    return convexHull1d(points)
++  } else if(d === 2) {
++    return convexHull2d(points)
++  }
++  return convexHullnd(points, d)
+ }
+-inherits(P25519, MPrime);
++},{"./lib/ch1d":80,"./lib/ch2d":81,"./lib/chnd":82}],80:[function(require,module,exports){
++"use strict"
+ 
+-P25519.prototype.imulK = function imulK(num) {
+-  // K = 0x13
+-  var carry = 0;
+-  for (var i = 0; i < num.length; i++) {
+-    var hi = num.words[i] * 0x13 + carry;
+-    var lo = hi & 0x3ffffff;
+-    hi >>>= 26;
++module.exports = convexHull1d
+ 
+-    num.words[i] = lo;
+-    carry = hi;
+-  }
+-  if (carry !== 0)
+-    num.words[num.length++] = carry;
+-  return num;
+-};
+-
+-// Exported mostly for testing purposes, use plain name instead
+-BN._prime = function prime(name) {
+-  // Cached version of prime
+-  if (primes[name])
+-    return primes[name];
+-
+-  var prime;
+-  if (name === 'k256')
+-    prime = new K256();
+-  else if (name === 'p224')
+-    prime = new P224();
+-  else if (name === 'p192')
+-    prime = new P192();
+-  else if (name === 'p25519')
+-    prime = new P25519();
+-  else
+-    throw new Error('Unknown prime ' + name);
+-  primes[name] = prime;
+-
+-  return prime;
+-};
+-
+-//
+-// Base reduction engine
+-//
+-function Red(m) {
+-  if (typeof m === 'string') {
+-    var prime = BN._prime(m);
+-    this.m = prime.p;
+-    this.prime = prime;
+-  } else {
+-    this.m = m;
+-    this.prime = null;
+-  }
+-}
+-
+-Red.prototype._verify1 = function _verify1(a) {
+-  assert(!a.sign, 'red works only with positives');
+-  assert(a.red, 'red works only with red numbers');
+-};
+-
+-Red.prototype._verify2 = function _verify2(a, b) {
+-  assert(!a.sign && !b.sign, 'red works only with positives');
+-  assert(a.red && a.red === b.red,
+-         'red works only with red numbers');
+-};
+-
+-Red.prototype.imod = function imod(a) {
+-  if (this.prime)
+-    return this.prime.ireduce(a)._forceRed(this);
+-  return a.mod(this.m)._forceRed(this);
+-};
+-
+-Red.prototype.neg = function neg(a) {
+-  var r = a.clone();
+-  r.sign = !r.sign;
+-  return r.iadd(this.m)._forceRed(this);
+-};
+-
+-Red.prototype.add = function add(a, b) {
+-  this._verify2(a, b);
+-
+-  var res = a.add(b);
+-  if (res.cmp(this.m) >= 0)
+-    res.isub(this.m);
+-  return res._forceRed(this);
+-};
+-
+-Red.prototype.iadd = function iadd(a, b) {
+-  this._verify2(a, b);
+-
+-  var res = a.iadd(b);
+-  if (res.cmp(this.m) >= 0)
+-    res.isub(this.m);
+-  return res;
+-};
+-
+-Red.prototype.sub = function sub(a, b) {
+-  this._verify2(a, b);
+-
+-  var res = a.sub(b);
+-  if (res.cmpn(0) < 0)
+-    res.iadd(this.m);
+-  return res._forceRed(this);
+-};
+-
+-Red.prototype.isub = function isub(a, b) {
+-  this._verify2(a, b);
+-
+-  var res = a.isub(b);
+-  if (res.cmpn(0) < 0)
+-    res.iadd(this.m);
+-  return res;
+-};
+-
+-Red.prototype.shl = function shl(a, num) {
+-  this._verify1(a);
+-  return this.imod(a.shln(num));
+-};
+-
+-Red.prototype.imul = function imul(a, b) {
+-  this._verify2(a, b);
+-  return this.imod(a.imul(b));
+-};
+-
+-Red.prototype.mul = function mul(a, b) {
+-  this._verify2(a, b);
+-  return this.imod(a.mul(b));
+-};
+-
+-Red.prototype.isqr = function isqr(a) {
+-  return this.imul(a, a);
+-};
+-
+-Red.prototype.sqr = function sqr(a) {
+-  return this.mul(a, a);
+-};
+-
+-Red.prototype.sqrt = function sqrt(a) {
+-  if (a.cmpn(0) === 0)
+-    return a.clone();
+-
+-  var mod3 = this.m.andln(3);
+-  assert(mod3 % 2 === 1);
+-
+-  // Fast case
+-  if (mod3 === 3) {
+-    var pow = this.m.add(new BN(1)).ishrn(2);
+-    var r = this.pow(a, pow);
+-    return r;
+-  }
+-
+-  // Tonelli-Shanks algorithm (Totally unoptimized and slow)
+-  //
+-  // Find Q and S, that Q * 2 ^ S = (P - 1)
+-  var q = this.m.subn(1);
+-  var s = 0;
+-  while (q.cmpn(0) !== 0 && q.andln(1) === 0) {
+-    s++;
+-    q.ishrn(1);
+-  }
+-  assert(q.cmpn(0) !== 0);
+-
+-  var one = new BN(1).toRed(this);
+-  var nOne = one.redNeg();
+-
+-  // Find quadratic non-residue
+-  // NOTE: Max is such because of generalized Riemann hypothesis.
+-  var lpow = this.m.subn(1).ishrn(1);
+-  var z = this.m.bitLength();
+-  z = new BN(2 * z * z).toRed(this);
+-  while (this.pow(z, lpow).cmp(nOne) !== 0)
+-    z.redIAdd(nOne);
+-
+-  var c = this.pow(z, q);
+-  var r = this.pow(a, q.addn(1).ishrn(1));
+-  var t = this.pow(a, q);
+-  var m = s;
+-  while (t.cmp(one) !== 0) {
+-    var tmp = t;
+-    for (var i = 0; tmp.cmp(one) !== 0; i++)
+-      tmp = tmp.redSqr();
+-    assert(i < m);
+-    var b = this.pow(c, new BN(1).ishln(m - i - 1));
+-
+-    r = r.redMul(b);
+-    c = b.redSqr();
+-    t = t.redMul(c);
+-    m = i;
+-  }
+-
+-  return r;
+-};
+-
+-Red.prototype.invm = function invm(a) {
+-  var inv = a._invmp(this.m);
+-  if (inv.sign) {
+-    inv.sign = false;
+-    return this.imod(inv).redNeg();
+-  } else {
+-    return this.imod(inv);
+-  }
+-};
+-
+-Red.prototype.pow = function pow(a, num) {
+-  var w = [];
+-
+-  if (num.cmpn(0) === 0)
+-    return new BN(1);
+-
+-  var q = num.clone();
+-
+-  while (q.cmpn(0) !== 0) {
+-    w.push(q.andln(1));
+-    q.ishrn(1);
+-  }
+-
+-  // Skip leading zeroes
+-  var res = a;
+-  for (var i = 0; i < w.length; i++, res = this.sqr(res))
+-    if (w[i] !== 0)
+-      break;
+-
+-  if (++i < w.length) {
+-    for (var q = this.sqr(res); i < w.length; i++, q = this.sqr(q)) {
+-      if (w[i] === 0)
+-        continue;
+-      res = this.mul(res, q);
++function convexHull1d(points) {
++  var lo = 0
++  var hi = 0
++  for(var i=1; i<points.length; ++i) {
++    if(points[i][0] < points[lo][0]) {
++      lo = i
++    }
++    if(points[i][0] > points[hi][0]) {
++      hi = i
+     }
+   }
+-
+-  return res;
+-};
+-
+-Red.prototype.convertTo = function convertTo(num) {
+-  var r = num.mod(this.m);
+-  if (r === num)
+-    return r.clone();
+-  else
+-    return r;
+-};
+-
+-Red.prototype.convertFrom = function convertFrom(num) {
+-  var res = num.clone();
+-  res.red = null;
+-  return res;
+-};
+-
+-//
+-// Montgomery method engine
+-//
+-
+-BN.mont = function mont(num) {
+-  return new Mont(num);
+-};
+-
+-function Mont(m) {
+-  Red.call(this, m);
+-
+-  this.shift = this.m.bitLength();
+-  if (this.shift % 26 !== 0)
+-    this.shift += 26 - (this.shift % 26);
+-  this.r = new BN(1).ishln(this.shift);
+-  this.r2 = this.imod(this.r.sqr());
+-  this.rinv = this.r._invmp(this.m);
+-
+-  this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
+-  this.minv.sign = true;
+-  this.minv = this.minv.mod(this.r);
+-}
+-inherits(Mont, Red);
+-
+-Mont.prototype.convertTo = function convertTo(num) {
+-  return this.imod(num.shln(this.shift));
+-};
+-
+-Mont.prototype.convertFrom = function convertFrom(num) {
+-  var r = this.imod(num.mul(this.rinv));
+-  r.red = null;
+-  return r;
+-};
+-
+-Mont.prototype.imul = function imul(a, b) {
+-  if (a.cmpn(0) === 0 || b.cmpn(0) === 0) {
+-    a.words[0] = 0;
+-    a.length = 1;
+-    return a;
++  if(lo < hi) {
++    return [[lo], [hi]]
++  } else if(lo > hi) {
++    return [[hi], [lo]]
++  } else {
++    return [[lo]]
+   }
+-
+-  var t = a.imul(b);
+-  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
+-  var u = t.isub(c).ishrn(this.shift);
+-  var res = u;
+-  if (u.cmp(this.m) >= 0)
+-    res = u.isub(this.m);
+-  else if (u.cmpn(0) < 0)
+-    res = u.iadd(this.m);
+-
+-  return res._forceRed(this);
+-};
+-
+-Mont.prototype.mul = function mul(a, b) {
+-  if (a.cmpn(0) === 0 || b.cmpn(0) === 0)
+-    return new BN(0)._forceRed(this);
+-
+-  var t = a.mul(b);
+-  var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
+-  var u = t.isub(c).ishrn(this.shift);
+-  var res = u;
+-  if (u.cmp(this.m) >= 0)
+-    res = u.isub(this.m);
+-  else if (u.cmpn(0) < 0)
+-    res = u.iadd(this.m);
+-
+-  return res._forceRed(this);
+-};
+-
+-Mont.prototype.invm = function invm(a) {
+-  // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
+-  var res = this.imod(a._invmp(this.m).mul(this.r2));
+-  return res._forceRed(this);
+-};
+-
+-})(typeof module === 'undefined' || module, this);
+-
+-},{}],86:[function(require,module,exports){
+-'use strict'
+-
+-var bnsign = require('./lib/bn-sign')
+-
+-module.exports = sign
+-
+-function sign(x) {
+-  return bnsign(x[0]) * bnsign(x[1])
+-}
+-
+-},{"./lib/bn-sign":77}],87:[function(require,module,exports){
+-'use strict'
+-
+-var rationalize = require('./lib/rationalize')
+-
+-module.exports = sub
+-
+-function sub(a, b) {
+-  return rationalize(a[0].mul(b[1]).sub(a[1].mul(b[0])), a[1].mul(b[1]))
+ }
+-
+-},{"./lib/rationalize":82}],88:[function(require,module,exports){
++},{}],81:[function(require,module,exports){
+ 'use strict'
+ 
+-var bn2num = require('./lib/bn-to-num')
+-var ctz = require('./lib/ctz')
++module.exports = convexHull2D
+ 
+-module.exports = roundRat
++var monotoneHull = require('monotone-convex-hull-2d')
+ 
+-//Round a rational to the closest float
+-function roundRat(f) {
+-  var a = f[0]
+-  var b = f[1]
+-  if(a.cmpn(0) === 0) {
+-    return 0
+-  }
+-  var h = a.divmod(b)
+-  var iv = h.div
+-  var x = bn2num(iv)
+-  var ir = h.mod
+-  if(ir.cmpn(0) === 0) {
+-    return x
++function convexHull2D(points) {
++  var hull = monotoneHull(points)
++  var h = hull.length
++  if(h <= 2) {
++    return []
+   }
+-  if(x) {
+-    var s = ctz(x) + 4
+-    var y = bn2num(ir.shln(s).divRound(b))
+-
+-    // flip the sign of y if x is negative
+-    if (x<0) {
+-      y = -y;
+-    }
+-
+-    return x + y * Math.pow(2, -s)
+-  } else {
+-    var ybits = b.bitLength() - ir.bitLength() + 53
+-    var y = bn2num(ir.shln(ybits).divRound(b))
+-    if(ybits < 1023) {
+-      return y * Math.pow(2, -ybits)
+-    }
+-    y *= Math.pow(2, -1023)
+-    return y * Math.pow(2, 1023-ybits)
++  var edges = new Array(h)
++  var a = hull[h-1]
++  for(var i=0; i<h; ++i) {
++    var b = hull[i]
++    edges[i] = [a,b]
++    a = b
+   }
++  return edges
+ }
+ 
+-},{"./lib/bn-to-num":78,"./lib/ctz":79}],89:[function(require,module,exports){
++},{"monotone-convex-hull-2d":370}],82:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = boxIntersectWrapper
++module.exports = convexHullnD
+ 
+-var pool = require('typedarray-pool')
+-var sweep = require('./lib/sweep')
+-var boxIntersectIter = require('./lib/intersect')
++var ich = require('incremental-convex-hull')
++var aff = require('affine-hull')
+ 
+-function boxEmpty(d, box) {
+-  for(var j=0; j<d; ++j) {
+-    if(!(box[j] <= box[j+d])) {
+-      return true
+-    }
++function permute(points, front) {
++  var n = points.length
++  var npoints = new Array(n)
++  for(var i=0; i<front.length; ++i) {
++    npoints[i] = points[front[i]]
+   }
+-  return false
+-}
+-
+-//Unpack boxes into a flat typed array, remove empty boxes
+-function convertBoxes(boxes, d, data, ids) {
+-  var ptr = 0
+-  var count = 0
+-  for(var i=0, n=boxes.length; i<n; ++i) {
+-    var b = boxes[i]
+-    if(boxEmpty(d, b)) {
+-      continue
+-    }
+-    for(var j=0; j<2*d; ++j) {
+-      data[ptr++] = b[j]
++  var ptr = front.length
++  for(var i=0; i<n; ++i) {
++    if(front.indexOf(i) < 0) {
++      npoints[ptr++] = points[i]
+     }
+-    ids[count++] = i
+   }
+-  return count
++  return npoints
+ }
+ 
+-//Perform type conversions, check bounds
+-function boxIntersect(red, blue, visit, full) {
+-  var n = red.length
+-  var m = blue.length
+-
+-  //If either array is empty, then we can skip this whole thing
+-  if(n <= 0 || m <= 0) {
+-    return
+-  }
+-
+-  //Compute dimension, if it is 0 then we skip
+-  var d = (red[0].length)>>>1
+-  if(d <= 0) {
+-    return
+-  }
+-
+-  var retval
+-
+-  //Convert red boxes
+-  var redList  = pool.mallocDouble(2*d*n)
+-  var redIds   = pool.mallocInt32(n)
+-  n = convertBoxes(red, d, redList, redIds)
+-
+-  if(n > 0) {
+-    if(d === 1 && full) {
+-      //Special case: 1d complete
+-      sweep.init(n)
+-      retval = sweep.sweepComplete(
+-        d, visit, 
+-        0, n, redList, redIds,
+-        0, n, redList, redIds)
+-    } else {
+-
+-      //Convert blue boxes
+-      var blueList = pool.mallocDouble(2*d*m)
+-      var blueIds  = pool.mallocInt32(m)
+-      m = convertBoxes(blue, d, blueList, blueIds)
+-
+-      if(m > 0) {
+-        sweep.init(n+m)
+-
+-        if(d === 1) {
+-          //Special case: 1d bipartite
+-          retval = sweep.sweepBipartite(
+-            d, visit, 
+-            0, n, redList,  redIds,
+-            0, m, blueList, blueIds)
+-        } else {
+-          //General case:  d>1
+-          retval = boxIntersectIter(
+-            d, visit,    full,
+-            n, redList,  redIds,
+-            m, blueList, blueIds)
++function invPermute(cells, front) {
++  var nc = cells.length
++  var nf = front.length
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      var x = c[j]
++      if(x < nf) {
++        c[j] = front[x]
++      } else {
++        x = x - nf
++        for(var k=0; k<nf; ++k) {
++          if(x >= front[k]) {
++            x += 1
++          }
+         }
+-
+-        pool.free(blueList)
+-        pool.free(blueIds)
++        c[j] = x
+       }
+     }
+-
+-    pool.free(redList)
+-    pool.free(redIds)
+   }
+-
+-  return retval
+-}
+-
+-
+-var RESULT
+-
+-function appendItem(i,j) {
+-  RESULT.push([i,j])
++  return cells
+ }
+ 
+-function intersectFullArray(x) {
+-  RESULT = []
+-  boxIntersect(x, x, appendItem, true)
+-  return RESULT
+-}
+-
+-function intersectBipartiteArray(x, y) {
+-  RESULT = []
+-  boxIntersect(x, y, appendItem, false)
+-  return RESULT
+-}
+-
+-//User-friendly wrapper, handle full input and no-visitor cases
+-function boxIntersectWrapper(arg0, arg1, arg2) {
+-  var result
+-  switch(arguments.length) {
+-    case 1:
+-      return intersectFullArray(arg0)
+-    case 2:
+-      if(typeof arg1 === 'function') {
+-        return boxIntersect(arg0, arg0, arg1, true)
+-      } else {
+-        return intersectBipartiteArray(arg0, arg1)
+-      }
+-    case 3:
+-      return boxIntersect(arg0, arg1, arg2, false)
+-    default:
+-      throw new Error('box-intersect: Invalid arguments')
++function convexHullnD(points, d) {
++  try {
++    return ich(points, true)
++  } catch(e) {
++    //If point set is degenerate, try to find a basis and rerun it
++    var ah = aff(points)
++    if(ah.length <= d) {
++      //No basis, no try
++      return []
++    }
++    var npoints = permute(points, ah)
++    var nhull   = ich(npoints, true)
++    return invPermute(nhull, ah)
+   }
+ }
+-},{"./lib/intersect":91,"./lib/sweep":95,"typedarray-pool":458}],90:[function(require,module,exports){
+-'use strict'
+-
+-var DIMENSION   = 'd'
+-var AXIS        = 'ax'
+-var VISIT       = 'vv'
+-var FLIP        = 'fp'
++},{"affine-hull":25,"incremental-convex-hull":224}],83:[function(require,module,exports){
++module.exports = {
++  AFG: "afghan",
++  ALA: "\\b\\wland",
++  ALB: "albania",
++  DZA: "algeria",
++  ASM: "^(?=.*americ).*samoa",
++  AND: "andorra",
++  AGO: "angola",
++  AIA: "anguill?a",
++  ATA: "antarctica",
++  ATG: "antigua",
++  ARG: "argentin",
++  ARM: "armenia",
++  ABW: "^(?!.*bonaire).*\\baruba",
++  AUS: "australia",
++  AUT: "^(?!.*hungary).*austria|\\baustri.*\\bemp",
++  AZE: "azerbaijan",
++  BHS: "bahamas",
++  BHR: "bahrain",
++  BGD: "bangladesh|^(?=.*east).*paki?stan",
++  BRB: "barbados",
++  BLR: "belarus|byelo",
++  BEL: "^(?!.*luxem).*belgium",
++  BLZ: "belize|^(?=.*british).*honduras",
++  BEN: "benin|dahome",
++  BMU: "bermuda",
++  BTN: "bhutan",
++  BOL: "bolivia",
++  BES: "^(?=.*bonaire).*eustatius|^(?=.*carib).*netherlands|\\bbes.?islands",
++  BIH: "herzegovina|bosnia",
++  BWA: "botswana|bechuana",
++  BVT: "bouvet",
++  BRA: "brazil",
++  IOT: "british.?indian.?ocean",
++  BRN: "brunei",
++  BGR: "bulgaria",
++  BFA: "burkina|\\bfaso|upper.?volta",
++  BDI: "burundi",
++  KHM: "cambodia|kampuchea|khmer",
++  CMR: "cameroon",
++  CAN: "canada",
++  CPV: "verde",
++  CYM: "cayman",
++  CAF: "\\bcentral.african.republic",
++  TCD: "\\bchad",
++  CHL: "\\bchile",
++  CHN: "^(?!.*\\bmac)(?!.*\\bhong)(?!.*\\btai)(?!.*\\brep).*china|^(?=.*peo)(?=.*rep).*china",
++  CXR: "christmas",
++  CCK: "\\bcocos|keeling",
++  COL: "colombia",
++  COM: "comoro",
++  COD: "\\bdem.*congo|congo.*\\bdem|congo.*\\bdr|\\bdr.*congo|belgian.?congo|congo.?free.?state|kinshasa|zaire|l.opoldville|drc|droc|rdc",
++  COG: "^(?!.*\\bdem)(?!.*\\bdr)(?!.*kinshasa)(?!.*zaire)(?!.*belg)(?!.*l.opoldville)(?!.*free).*\\bcongo",
++  COK: "\\bcook",
++  CRI: "costa.?rica",
++  CIV: "ivoire|ivory",
++  HRV: "croatia",
++  CUB: "\\bcuba",
++  CUW: "^(?!.*bonaire).*\\bcura(c|ç)ao",
++  CYP: "cyprus",
++  CZE: "^(?=.*rep).*czech|czechia|bohemia",
++  CSK: "czechoslovakia",
++  DNK: "denmark",
++  DJI: "djibouti",
++  DMA: "dominica(?!n)",
++  DOM: "dominican.rep",
++  ECU: "ecuador",
++  EGY: "egypt",
++  SLV: "el.?salvador",
++  GNQ: "guine.*eq|eq.*guine|^(?=.*span).*guinea",
++  ERI: "eritrea",
++  EST: "estonia",
++  ETH: "ethiopia|abyssinia",
++  FLK: "falkland|malvinas",
++  FRO: "faroe|faeroe",
++  FJI: "fiji",
++  FIN: "finland",
++  FRA: "^(?!.*\\bdep)(?!.*martinique).*france|french.?republic|\\bgaul",
++  GUF: "^(?=.*french).*guiana",
++  PYF: "french.?polynesia|tahiti",
++  ATF: "french.?southern",
++  GAB: "gabon",
++  GMB: "gambia",
++  GEO: "^(?!.*south).*georgia",
++  DDR: "german.?democratic.?republic|democratic.?republic.*germany|east.germany",
++  DEU: "^(?!.*east).*germany|^(?=.*\\bfed.*\\brep).*german",
++  GHA: "ghana|gold.?coast",
++  GIB: "gibraltar",
++  GRC: "greece|hellenic|hellas",
++  GRL: "greenland",
++  GRD: "grenada",
++  GLP: "guadeloupe",
++  GUM: "\\bguam",
++  GTM: "guatemala",
++  GGY: "guernsey",
++  GIN: "^(?!.*eq)(?!.*span)(?!.*bissau)(?!.*portu)(?!.*new).*guinea",
++  GNB: "bissau|^(?=.*portu).*guinea",
++  GUY: "guyana|british.?guiana",
++  HTI: "haiti",
++  HMD: "heard.*mcdonald",
++  VAT: "holy.?see|vatican|papal.?st",
++  HND: "^(?!.*brit).*honduras",
++  HKG: "hong.?kong",
++  HUN: "^(?!.*austr).*hungary",
++  ISL: "iceland",
++  IND: "india(?!.*ocea)",
++  IDN: "indonesia",
++  IRN: "\\biran|persia",
++  IRQ: "\\biraq|mesopotamia",
++  IRL: "ireland",
++  IMN: "^(?=.*isle).*\\bman",
++  ISR: "israel",
++  ITA: "italy",
++  JAM: "jamaica",
++  JPN: "japan",
++  JEY: "jersey",
++  JOR: "jordan",
++  KAZ: "kazak",
++  KEN: "kenya|british.?east.?africa|east.?africa.?prot",
++  KIR: "kiribati",
++  PRK: "^(?=.*democrat).*\\bkorea|^(?=.*people).*\\bkorea|^(?=.*north).*\\bkorea|dprk",
++  KOR: "^(?!.*democrat)(?!.*people)(?!.*north).*\\bkorea",
++  KWT: "kuwait",
++  KGZ: "kyrgyz|kirghiz",
++  LAO: "\\blaos?\\b",
++  LVA: "latvia",
++  LBN: "lebanon",
++  LSO: "lesotho|basuto",
++  LBR: "liberia",
++  LBY: "libya",
++  LIE: "liechtenstein",
++  LTU: "lithuania",
++  LUX: "^(?!.*belg).*luxem",
++  MAC: "maca(o|u)",
++  MKD: "macedonia|fyrom",
++  MDG: "madagascar|malagasy",
++  MWI: "malawi|nyasa",
++  MYS: "malaysia",
++  MDV: "maldive",
++  MLI: "\\bmali\\b",
++  MLT: "\\bmalta",
++  MHL: "marshall",
++  MTQ: "martinique",
++  MRT: "mauritania",
++  MUS: "mauritius",
++  MYT: "\\bmayotte",
++  MEX: "\\bmexic",
++  FSM: "micronesia",
++  MDA: "moldov|b(a|e)ssarabia",
++  MCO: "monaco",
++  MNG: "mongolia",
++  MNE: "^(?!.*serbia).*montenegro",
++  MSR: "montserrat",
++  MAR: "morocco|\\bmaroc",
++  MOZ: "mozambique",
++  MMR: "myanmar|burma",
++  NAM: "namibia",
++  NRU: "nauru",
++  NPL: "nepal",
++  NLD: "^(?!.*\\bant)(?!.*\\bcarib).*netherlands",
++  ANT: "^(?=.*\\bant).*(nether|dutch)",
++  NCL: "new.?caledonia",
++  NZL: "new.?zealand",
++  NIC: "nicaragua",
++  NER: "\\bniger(?!ia)",
++  NGA: "nigeria",
++  NIU: "niue",
++  NFK: "norfolk",
++  MNP: "mariana",
++  NOR: "norway",
++  OMN: "\\boman|trucial",
++  PAK: "^(?!.*east).*paki?stan",
++  PLW: "palau",
++  PSE: "palestin|\\bgaza|west.?bank",
++  PAN: "panama",
++  PNG: "papua|new.?guinea",
++  PRY: "paraguay",
++  PER: "peru",
++  PHL: "philippines",
++  PCN: "pitcairn",
++  POL: "poland",
++  PRT: "portugal",
++  PRI: "puerto.?rico",
++  QAT: "qatar",
++  REU: "r(e|é)union",
++  ROU: "r(o|u|ou)mania",
++  RUS: "\\brussia|soviet.?union|u\\.?s\\.?s\\.?r|socialist.?republics",
++  RWA: "rwanda",
++  BLM: "barth(e|é)lemy",
++  SHN: "helena",
++  KNA: "kitts|\\bnevis",
++  LCA: "\\blucia",
++  MAF: "^(?=.*collectivity).*martin|^(?=.*france).*martin(?!ique)|^(?=.*french).*martin(?!ique)",
++  SPM: "miquelon",
++  VCT: "vincent",
++  WSM: "^(?!.*amer).*samoa",
++  SMR: "san.?marino",
++  STP: "\\bs(a|ã)o.?tom(e|é)",
++  SAU: "\\bsa\\w*.?arabia",
++  SEN: "senegal",
++  SRB: "^(?!.*monte).*serbia",
++  SYC: "seychell",
++  SLE: "sierra",
++  SGP: "singapore",
++  SXM: "^(?!.*martin)(?!.*saba).*maarten",
++  SVK: "^(?!.*cze).*slovak",
++  SVN: "slovenia",
++  SLB: "solomon",
++  SOM: "somali",
++  ZAF: "\\bs\\w*.?africa",
++  SGS: "south.?georgia|sandwich",
++  SSD: "\\bs\\w*.?sudan",
++  ESP: "spain",
++  LKA: "sri.?lanka|ceylon",
++  SDN: "^(?!.*\\bs(?!u)).*sudan",
++  SUR: "surinam|dutch.?guiana",
++  SJM: "svalbard",
++  SWZ: "swaziland",
++  SWE: "sweden",
++  CHE: "switz|swiss",
++  SYR: "syria",
++  TWN: "taiwan|taipei|formosa|^(?!.*peo)(?=.*rep).*china",
++  TJK: "tajik",
++  TZA: "tanzania",
++  THA: "thailand|\\bsiam",
++  TLS: "^(?=.*leste).*timor|^(?=.*east).*timor",
++  TGO: "togo",
++  TKL: "tokelau",
++  TON: "tonga",
++  TTO: "trinidad|tobago",
++  TUN: "tunisia",
++  TUR: "turkey",
++  TKM: "turkmen",
++  TCA: "turks",
++  TUV: "tuvalu",
++  UGA: "uganda",
++  UKR: "ukrain",
++  ARE: "emirates|^u\\.?a\\.?e\\.?$|united.?arab.?em",
++  GBR: "united.?kingdom|britain|^u\\.?k\\.?$",
++  USA: "united.?states|\\bu\\.?s\\.?a\\.?\\b|\\bu\\.?s\\.?\\b(?!.*islands)",
++  UMI: "minor.?outlying.?is",
++  URY: "uruguay",
++  UZB: "uzbek",
++  VUT: "vanuatu|new.?hebrides",
++  VEN: "venezuela",
++  VNM: "^(?!.*republic).*viet.?nam|^(?=.*socialist).*viet.?nam",
++  VGB: "^(?=.*\\bu\\.?\\s?k).*virgin|^(?=.*brit).*virgin|^(?=.*kingdom).*virgin",
++  VIR: "^(?=.*\\bu\\.?\\s?s).*virgin|^(?=.*states).*virgin",
++  WLF: "futuna|wallis",
++  ESH: "western.sahara",
++  YEM: "^(?!.*arab)(?!.*north)(?!.*sana)(?!.*peo)(?!.*dem)(?!.*south)(?!.*aden)(?!.*\\bp\\.?d\\.?r).*yemen",
++  YMD: "^(?=.*peo).*yemen|^(?!.*rep)(?=.*dem).*yemen|^(?=.*south).*yemen|^(?=.*aden).*yemen|^(?=.*\\bp\\.?d\\.?r).*yemen",
++  YUG: "yugoslavia",
++  ZMB: "zambia|northern.?rhodesia",
++  EAZ: "zanzibar",
++  ZWE: "zimbabwe|^(?!.*northern).*rhodesia"
++};
+ 
+-var ELEM_SIZE   = 'es'
++},{}],84:[function(require,module,exports){
++// (c) Dean McNamee <dean@gmail.com>, 2012.
++//
++// https://github.com/deanm/css-color-parser-js
++//
++// Permission is hereby granted, free of charge, to any person obtaining a copy
++// of this software and associated documentation files (the "Software"), to
++// deal in the Software without restriction, including without limitation the
++// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
++// sell copies of the Software, and to permit persons to whom the Software is
++// furnished to do so, subject to the following conditions:
++//
++// The above copyright notice and this permission notice shall be included in
++// all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
++// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
++// IN THE SOFTWARE.
+ 
+-var RED_START   = 'rs'
+-var RED_END     = 're'
+-var RED_BOXES   = 'rb'
+-var RED_INDEX   = 'ri'
+-var RED_PTR     = 'rp'
++// http://www.w3.org/TR/css3-color/
++var kCSSColorTable = {
++  "transparent": [0,0,0,0], "aliceblue": [240,248,255,1],
++  "antiquewhite": [250,235,215,1], "aqua": [0,255,255,1],
++  "aquamarine": [127,255,212,1], "azure": [240,255,255,1],
++  "beige": [245,245,220,1], "bisque": [255,228,196,1],
++  "black": [0,0,0,1], "blanchedalmond": [255,235,205,1],
++  "blue": [0,0,255,1], "blueviolet": [138,43,226,1],
++  "brown": [165,42,42,1], "burlywood": [222,184,135,1],
++  "cadetblue": [95,158,160,1], "chartreuse": [127,255,0,1],
++  "chocolate": [210,105,30,1], "coral": [255,127,80,1],
++  "cornflowerblue": [100,149,237,1], "cornsilk": [255,248,220,1],
++  "crimson": [220,20,60,1], "cyan": [0,255,255,1],
++  "darkblue": [0,0,139,1], "darkcyan": [0,139,139,1],
++  "darkgoldenrod": [184,134,11,1], "darkgray": [169,169,169,1],
++  "darkgreen": [0,100,0,1], "darkgrey": [169,169,169,1],
++  "darkkhaki": [189,183,107,1], "darkmagenta": [139,0,139,1],
++  "darkolivegreen": [85,107,47,1], "darkorange": [255,140,0,1],
++  "darkorchid": [153,50,204,1], "darkred": [139,0,0,1],
++  "darksalmon": [233,150,122,1], "darkseagreen": [143,188,143,1],
++  "darkslateblue": [72,61,139,1], "darkslategray": [47,79,79,1],
++  "darkslategrey": [47,79,79,1], "darkturquoise": [0,206,209,1],
++  "darkviolet": [148,0,211,1], "deeppink": [255,20,147,1],
++  "deepskyblue": [0,191,255,1], "dimgray": [105,105,105,1],
++  "dimgrey": [105,105,105,1], "dodgerblue": [30,144,255,1],
++  "firebrick": [178,34,34,1], "floralwhite": [255,250,240,1],
++  "forestgreen": [34,139,34,1], "fuchsia": [255,0,255,1],
++  "gainsboro": [220,220,220,1], "ghostwhite": [248,248,255,1],
++  "gold": [255,215,0,1], "goldenrod": [218,165,32,1],
++  "gray": [128,128,128,1], "green": [0,128,0,1],
++  "greenyellow": [173,255,47,1], "grey": [128,128,128,1],
++  "honeydew": [240,255,240,1], "hotpink": [255,105,180,1],
++  "indianred": [205,92,92,1], "indigo": [75,0,130,1],
++  "ivory": [255,255,240,1], "khaki": [240,230,140,1],
++  "lavender": [230,230,250,1], "lavenderblush": [255,240,245,1],
++  "lawngreen": [124,252,0,1], "lemonchiffon": [255,250,205,1],
++  "lightblue": [173,216,230,1], "lightcoral": [240,128,128,1],
++  "lightcyan": [224,255,255,1], "lightgoldenrodyellow": [250,250,210,1],
++  "lightgray": [211,211,211,1], "lightgreen": [144,238,144,1],
++  "lightgrey": [211,211,211,1], "lightpink": [255,182,193,1],
++  "lightsalmon": [255,160,122,1], "lightseagreen": [32,178,170,1],
++  "lightskyblue": [135,206,250,1], "lightslategray": [119,136,153,1],
++  "lightslategrey": [119,136,153,1], "lightsteelblue": [176,196,222,1],
++  "lightyellow": [255,255,224,1], "lime": [0,255,0,1],
++  "limegreen": [50,205,50,1], "linen": [250,240,230,1],
++  "magenta": [255,0,255,1], "maroon": [128,0,0,1],
++  "mediumaquamarine": [102,205,170,1], "mediumblue": [0,0,205,1],
++  "mediumorchid": [186,85,211,1], "mediumpurple": [147,112,219,1],
++  "mediumseagreen": [60,179,113,1], "mediumslateblue": [123,104,238,1],
++  "mediumspringgreen": [0,250,154,1], "mediumturquoise": [72,209,204,1],
++  "mediumvioletred": [199,21,133,1], "midnightblue": [25,25,112,1],
++  "mintcream": [245,255,250,1], "mistyrose": [255,228,225,1],
++  "moccasin": [255,228,181,1], "navajowhite": [255,222,173,1],
++  "navy": [0,0,128,1], "oldlace": [253,245,230,1],
++  "olive": [128,128,0,1], "olivedrab": [107,142,35,1],
++  "orange": [255,165,0,1], "orangered": [255,69,0,1],
++  "orchid": [218,112,214,1], "palegoldenrod": [238,232,170,1],
++  "palegreen": [152,251,152,1], "paleturquoise": [175,238,238,1],
++  "palevioletred": [219,112,147,1], "papayawhip": [255,239,213,1],
++  "peachpuff": [255,218,185,1], "peru": [205,133,63,1],
++  "pink": [255,192,203,1], "plum": [221,160,221,1],
++  "powderblue": [176,224,230,1], "purple": [128,0,128,1],
++  "rebeccapurple": [102,51,153,1],
++  "red": [255,0,0,1], "rosybrown": [188,143,143,1],
++  "royalblue": [65,105,225,1], "saddlebrown": [139,69,19,1],
++  "salmon": [250,128,114,1], "sandybrown": [244,164,96,1],
++  "seagreen": [46,139,87,1], "seashell": [255,245,238,1],
++  "sienna": [160,82,45,1], "silver": [192,192,192,1],
++  "skyblue": [135,206,235,1], "slateblue": [106,90,205,1],
++  "slategray": [112,128,144,1], "slategrey": [112,128,144,1],
++  "snow": [255,250,250,1], "springgreen": [0,255,127,1],
++  "steelblue": [70,130,180,1], "tan": [210,180,140,1],
++  "teal": [0,128,128,1], "thistle": [216,191,216,1],
++  "tomato": [255,99,71,1], "turquoise": [64,224,208,1],
++  "violet": [238,130,238,1], "wheat": [245,222,179,1],
++  "white": [255,255,255,1], "whitesmoke": [245,245,245,1],
++  "yellow": [255,255,0,1], "yellowgreen": [154,205,50,1]}
+ 
+-var BLUE_START  = 'bs'
+-var BLUE_END    = 'be'
+-var BLUE_BOXES  = 'bb'
+-var BLUE_INDEX  = 'bi'
+-var BLUE_PTR    = 'bp'
++function clamp_css_byte(i) {  // Clamp to integer 0 .. 255.
++  i = Math.round(i);  // Seems to be what Chrome does (vs truncation).
++  return i < 0 ? 0 : i > 255 ? 255 : i;
++}
+ 
+-var RETVAL      = 'rv'
++function clamp_css_float(f) {  // Clamp to float 0.0 .. 1.0.
++  return f < 0 ? 0 : f > 1 ? 1 : f;
++}
+ 
+-var INNER_LABEL = 'Q'
++function parse_css_int(str) {  // int or percentage.
++  if (str[str.length - 1] === '%')
++    return clamp_css_byte(parseFloat(str) / 100 * 255);
++  return clamp_css_byte(parseInt(str));
++}
+ 
+-var ARGS = [
+-  DIMENSION,
+-  AXIS,
+-  VISIT,
+-  RED_START,
+-  RED_END,
+-  RED_BOXES,
+-  RED_INDEX,
+-  BLUE_START,
+-  BLUE_END,
+-  BLUE_BOXES,
+-  BLUE_INDEX
+-]
++function parse_css_float(str) {  // float or percentage.
++  if (str[str.length - 1] === '%')
++    return clamp_css_float(parseFloat(str) / 100);
++  return clamp_css_float(parseFloat(str));
++}
+ 
+-function generateBruteForce(redMajor, flip, full) {
+-  var funcName = 'bruteForce' + 
+-    (redMajor ? 'Red' : 'Blue') + 
+-    (flip ? 'Flip' : '') +
+-    (full ? 'Full' : '')
++function css_hue_to_rgb(m1, m2, h) {
++  if (h < 0) h += 1;
++  else if (h > 1) h -= 1;
+ 
+-  var code = ['function ', funcName, '(', ARGS.join(), '){',
+-    'var ', ELEM_SIZE, '=2*', DIMENSION, ';']
++  if (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
++  if (h * 2 < 1) return m2;
++  if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6;
++  return m1;
++}
+ 
+-  var redLoop = 
+-    'for(var i=' + RED_START + ',' + RED_PTR + '=' + ELEM_SIZE + '*' + RED_START + ';' +
+-        'i<' + RED_END +';' +
+-        '++i,' + RED_PTR + '+=' + ELEM_SIZE + '){' +
+-        'var x0=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '],' +
+-            'x1=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '+' + DIMENSION + '],' +
+-            'xi=' + RED_INDEX + '[i];'
++function parseCSSColor(css_str) {
++  // Remove all whitespace, not compliant, but should just be more accepting.
++  var str = css_str.replace(/ /g, '').toLowerCase();
+ 
+-  var blueLoop = 
+-    'for(var j=' + BLUE_START + ',' + BLUE_PTR + '=' + ELEM_SIZE + '*' + BLUE_START + ';' +
+-        'j<' + BLUE_END + ';' +
+-        '++j,' + BLUE_PTR + '+=' + ELEM_SIZE + '){' +
+-        'var y0=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '],' +
+-            (full ? 'y1=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '+' + DIMENSION + '],' : '') +
+-            'yi=' + BLUE_INDEX + '[j];'
++  // Color keywords (and transparent) lookup.
++  if (str in kCSSColorTable) return kCSSColorTable[str].slice();  // dup.
+ 
+-  if(redMajor) {
+-    code.push(redLoop, INNER_LABEL, ':', blueLoop)
+-  } else {
+-    code.push(blueLoop, INNER_LABEL, ':', redLoop)
+-  }
++  // #abc and #abc123 syntax.
++  if (str[0] === '#') {
++    if (str.length === 4) {
++      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
++      if (!(iv >= 0 && iv <= 0xfff)) return null;  // Covers NaN.
++      return [((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8),
++              (iv & 0xf0) | ((iv & 0xf0) >> 4),
++              (iv & 0xf) | ((iv & 0xf) << 4),
++              1];
++    } else if (str.length === 7) {
++      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
++      if (!(iv >= 0 && iv <= 0xffffff)) return null;  // Covers NaN.
++      return [(iv & 0xff0000) >> 16,
++              (iv & 0xff00) >> 8,
++              iv & 0xff,
++              1];
++    }
+ 
+-  if(full) {
+-    code.push('if(y1<x0||x1<y0)continue;')
+-  } else if(flip) {
+-    code.push('if(y0<=x0||x1<y0)continue;')
+-  } else {
+-    code.push('if(y0<x0||x1<y0)continue;')
++    return null;
+   }
+ 
+-  code.push('for(var k='+AXIS+'+1;k<'+DIMENSION+';++k){'+
+-    'var r0='+RED_BOXES+'[k+'+RED_PTR+'],'+
+-        'r1='+RED_BOXES+'[k+'+DIMENSION+'+'+RED_PTR+'],'+
+-        'b0='+BLUE_BOXES+'[k+'+BLUE_PTR+'],'+
+-        'b1='+BLUE_BOXES+'[k+'+DIMENSION+'+'+BLUE_PTR+'];'+
+-      'if(r1<b0||b1<r0)continue ' + INNER_LABEL + ';}' +
+-      'var ' + RETVAL + '=' + VISIT + '(')
+-
+-  if(flip) {
+-    code.push('yi,xi')
+-  } else {
+-    code.push('xi,yi')
+-  }
+-
+-  code.push(');if(' + RETVAL + '!==void 0)return ' + RETVAL + ';}}}')
+-
+-  return {
+-    name: funcName, 
+-    code: code.join('')
+-  }
+-}
+-
+-function bruteForcePlanner(full) {
+-  var funcName = 'bruteForce' + (full ? 'Full' : 'Partial')
+-  var prefix = []
+-  var fargs = ARGS.slice()
+-  if(!full) {
+-    fargs.splice(3, 0, FLIP)
+-  }
+-
+-  var code = ['function ' + funcName + '(' + fargs.join() + '){']
+-
+-  function invoke(redMajor, flip) {
+-    var res = generateBruteForce(redMajor, flip, full)
+-    prefix.push(res.code)
+-    code.push('return ' + res.name + '(' + ARGS.join() + ');')
+-  }
+-
+-  code.push('if(' + RED_END + '-' + RED_START + '>' +
+-                    BLUE_END + '-' + BLUE_START + '){')
+-
+-  if(full) {
+-    invoke(true, false)
+-    code.push('}else{')
+-    invoke(false, false)
+-  } else {
+-    code.push('if(' + FLIP + '){')
+-    invoke(true, true)
+-    code.push('}else{')
+-    invoke(true, false)
+-    code.push('}}else{if(' + FLIP + '){')
+-    invoke(false, true)
+-    code.push('}else{')
+-    invoke(false, false)
+-    code.push('}')
+-  }
+-  code.push('}}return ' + funcName)
+-
+-  var codeStr = prefix.join('') + code.join('')
+-  var proc = new Function(codeStr)
+-  return proc()
+-}
+-
+-
+-exports.partial = bruteForcePlanner(false)
+-exports.full    = bruteForcePlanner(true)
+-},{}],91:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = boxIntersectIter
+-
+-var pool = require('typedarray-pool')
+-var bits = require('bit-twiddle')
+-var bruteForce = require('./brute')
+-var bruteForcePartial = bruteForce.partial
+-var bruteForceFull = bruteForce.full
+-var sweep = require('./sweep')
+-var findMedian = require('./median')
+-var genPartition = require('./partition')
+-
+-//Twiddle parameters
+-var BRUTE_FORCE_CUTOFF    = 128       //Cut off for brute force search
+-var SCAN_CUTOFF           = (1<<22)   //Cut off for two way scan
+-var SCAN_COMPLETE_CUTOFF  = (1<<22)  
+-
+-//Partition functions
+-var partitionInteriorContainsInterval = genPartition(
+-  '!(lo>=p0)&&!(p1>=hi)', 
+-  ['p0', 'p1'])
+-
+-var partitionStartEqual = genPartition(
+-  'lo===p0',
+-  ['p0'])
+-
+-var partitionStartLessThan = genPartition(
+-  'lo<p0',
+-  ['p0'])
+-
+-var partitionEndLessThanEqual = genPartition(
+-  'hi<=p0',
+-  ['p0'])
+-
+-var partitionContainsPoint = genPartition(
+-  'lo<=p0&&p0<=hi',
+-  ['p0'])
+-
+-var partitionContainsPointProper = genPartition(
+-  'lo<p0&&p0<=hi',
+-  ['p0'])
+-
+-//Frame size for iterative loop
+-var IFRAME_SIZE = 6
+-var DFRAME_SIZE = 2
+-
+-//Data for box statck
+-var INIT_CAPACITY = 1024
+-var BOX_ISTACK  = pool.mallocInt32(INIT_CAPACITY)
+-var BOX_DSTACK  = pool.mallocDouble(INIT_CAPACITY)
+-
+-//Initialize iterative loop queue
+-function iterInit(d, count) {
+-  var levels = (8 * bits.log2(count+1) * (d+1))|0
+-  var maxInts = bits.nextPow2(IFRAME_SIZE*levels)
+-  if(BOX_ISTACK.length < maxInts) {
+-    pool.free(BOX_ISTACK)
+-    BOX_ISTACK = pool.mallocInt32(maxInts)
+-  }
+-  var maxDoubles = bits.nextPow2(DFRAME_SIZE*levels)
+-  if(BOX_DSTACK < maxDoubles) {
+-    pool.free(BOX_DSTACK)
+-    BOX_DSTACK = pool.mallocDouble(maxDoubles)
++  var op = str.indexOf('('), ep = str.indexOf(')');
++  if (op !== -1 && ep + 1 === str.length) {
++    var fname = str.substr(0, op);
++    var params = str.substr(op+1, ep-(op+1)).split(',');
++    var alpha = 1;  // To allow case fallthrough.
++    switch (fname) {
++      case 'rgba':
++        if (params.length !== 4) return null;
++        alpha = parse_css_float(params.pop());
++        // Fall through.
++      case 'rgb':
++        if (params.length !== 3) return null;
++        return [parse_css_int(params[0]),
++                parse_css_int(params[1]),
++                parse_css_int(params[2]),
++                alpha];
++      case 'hsla':
++        if (params.length !== 4) return null;
++        alpha = parse_css_float(params.pop());
++        // Fall through.
++      case 'hsl':
++        if (params.length !== 3) return null;
++        var h = (((parseFloat(params[0]) % 360) + 360) % 360) / 360;  // 0 .. 1
++        // NOTE(deanm): According to the CSS spec s/l should only be
++        // percentages, but we don't bother and let float or percentage.
++        var s = parse_css_float(params[1]);
++        var l = parse_css_float(params[2]);
++        var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
++        var m1 = l * 2 - m2;
++        return [clamp_css_byte(css_hue_to_rgb(m1, m2, h+1/3) * 255),
++                clamp_css_byte(css_hue_to_rgb(m1, m2, h) * 255),
++                clamp_css_byte(css_hue_to_rgb(m1, m2, h-1/3) * 255),
++                alpha];
++      default:
++        return null;
++    }
+   }
+-}
+-
+-//Append item to queue
+-function iterPush(ptr,
+-  axis, 
+-  redStart, redEnd, 
+-  blueStart, blueEnd, 
+-  state, 
+-  lo, hi) {
+-
+-  var iptr = IFRAME_SIZE * ptr
+-  BOX_ISTACK[iptr]   = axis
+-  BOX_ISTACK[iptr+1] = redStart
+-  BOX_ISTACK[iptr+2] = redEnd
+-  BOX_ISTACK[iptr+3] = blueStart
+-  BOX_ISTACK[iptr+4] = blueEnd
+-  BOX_ISTACK[iptr+5] = state
+ 
+-  var dptr = DFRAME_SIZE * ptr
+-  BOX_DSTACK[dptr]   = lo
+-  BOX_DSTACK[dptr+1] = hi
++  return null;
+ }
+ 
+-//Special case:  Intersect single point with list of intervals
+-function onePointPartial(
+-  d, axis, visit, flip,
+-  redStart, redEnd, red, redIndex,
+-  blueOffset, blue, blueId) {
++try { exports.parseCSSColor = parseCSSColor } catch(e) { }
+ 
+-  var elemSize = 2 * d
+-  var bluePtr  = blueOffset * elemSize
+-  var blueX    = blue[bluePtr + axis]
++},{}],85:[function(require,module,exports){
++"use strict"
+ 
+-red_loop:
+-  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
+-    var r0 = red[redPtr+axis]
+-    var r1 = red[redPtr+axis+d]
+-    if(blueX < r0 || r1 < blueX) {
+-      continue
+-    }
+-    if(flip && blueX === r0) {
+-      continue
+-    }
+-    var redId = redIndex[i]
+-    for(var j=axis+1; j<d; ++j) {
+-      var r0 = red[redPtr+j]
+-      var r1 = red[redPtr+j+d]
+-      var b0 = blue[bluePtr+j]
+-      var b1 = blue[bluePtr+j+d]
+-      if(r1 < b0 || b1 < r0) {
+-        continue red_loop
+-      }
+-    }
+-    var retval
+-    if(flip) {
+-      retval = visit(blueId, redId)
+-    } else {
+-      retval = visit(redId, blueId)
++function dcubicHermite(p0, v0, p1, v1, t, f) {
++  var dh00 = 6*t*t-6*t,
++      dh10 = 3*t*t-4*t + 1,
++      dh01 = -6*t*t+6*t,
++      dh11 = 3*t*t-2*t
++  if(p0.length) {
++    if(!f) {
++      f = new Array(p0.length)
+     }
+-    if(retval !== void 0) {
+-      return retval
++    for(var i=p0.length-1; i>=0; --i) {
++      f[i] = dh00*p0[i] + dh10*v0[i] + dh01*p1[i] + dh11*v1[i]
+     }
++    return f
+   }
++  return dh00*p0 + dh10*v0 + dh01*p1[i] + dh11*v1
+ }
+ 
+-//Special case:  Intersect one point with list of intervals
+-function onePointFull(
+-  d, axis, visit,
+-  redStart, redEnd, red, redIndex,
+-  blueOffset, blue, blueId) {
+-
+-  var elemSize = 2 * d
+-  var bluePtr  = blueOffset * elemSize
+-  var blueX    = blue[bluePtr + axis]
+-
+-red_loop:
+-  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
+-    var redId = redIndex[i]
+-    if(redId === blueId) {
+-      continue
+-    }
+-    var r0 = red[redPtr+axis]
+-    var r1 = red[redPtr+axis+d]
+-    if(blueX < r0 || r1 < blueX) {
+-      continue
+-    }
+-    for(var j=axis+1; j<d; ++j) {
+-      var r0 = red[redPtr+j]
+-      var r1 = red[redPtr+j+d]
+-      var b0 = blue[bluePtr+j]
+-      var b1 = blue[bluePtr+j+d]
+-      if(r1 < b0 || b1 < r0) {
+-        continue red_loop
+-      }
++function cubicHermite(p0, v0, p1, v1, t, f) {
++  var ti  = (t-1), t2 = t*t, ti2 = ti*ti,
++      h00 = (1+2*t)*ti2,
++      h10 = t*ti2,
++      h01 = t2*(3-2*t),
++      h11 = t2*ti
++  if(p0.length) {
++    if(!f) {
++      f = new Array(p0.length)
+     }
+-    var retval = visit(redId, blueId)
+-    if(retval !== void 0) {
+-      return retval
++    for(var i=p0.length-1; i>=0; --i) {
++      f[i] = h00*p0[i] + h10*v0[i] + h01*p1[i] + h11*v1[i]
+     }
++    return f
+   }
++  return h00*p0 + h10*v0 + h01*p1 + h11*v1
+ }
+ 
+-//The main box intersection routine
+-function boxIntersectIter(
+-  d, visit, initFull,
+-  xSize, xBoxes, xIndex,
+-  ySize, yBoxes, yIndex) {
+-
+-  //Reserve memory for stack
+-  iterInit(d, xSize + ySize)
+-
+-  var top  = 0
+-  var elemSize = 2 * d
+-  var retval
+-
+-  iterPush(top++,
+-      0,
+-      0, xSize,
+-      0, ySize,
+-      initFull ? 16 : 0, 
+-      -Infinity, Infinity)
+-  if(!initFull) {
+-    iterPush(top++,
+-      0,
+-      0, ySize,
+-      0, xSize,
+-      1, 
+-      -Infinity, Infinity)
+-  }
+-
+-  while(top > 0) {
+-    top  -= 1
+-
+-    var iptr = top * IFRAME_SIZE
+-    var axis      = BOX_ISTACK[iptr]
+-    var redStart  = BOX_ISTACK[iptr+1]
+-    var redEnd    = BOX_ISTACK[iptr+2]
+-    var blueStart = BOX_ISTACK[iptr+3]
+-    var blueEnd   = BOX_ISTACK[iptr+4]
+-    var state     = BOX_ISTACK[iptr+5]
+-
+-    var dptr = top * DFRAME_SIZE
+-    var lo        = BOX_DSTACK[dptr]
+-    var hi        = BOX_DSTACK[dptr+1]
+-
+-    //Unpack state info
+-    var flip      = (state & 1)
+-    var full      = !!(state & 16)
+-
+-    //Unpack indices
+-    var red       = xBoxes
+-    var redIndex  = xIndex
+-    var blue      = yBoxes
+-    var blueIndex = yIndex
+-    if(flip) {
+-      red         = yBoxes
+-      redIndex    = yIndex
+-      blue        = xBoxes
+-      blueIndex   = xIndex
+-    }
+-
+-    if(state & 2) {
+-      redEnd = partitionStartLessThan(
+-        d, axis,
+-        redStart, redEnd, red, redIndex,
+-        hi)
+-      if(redStart >= redEnd) {
+-        continue
+-      }
+-    }
+-    if(state & 4) {
+-      redStart = partitionEndLessThanEqual(
+-        d, axis,
+-        redStart, redEnd, red, redIndex,
+-        lo)
+-      if(redStart >= redEnd) {
+-        continue
+-      }
+-    }
+-    
+-    var redCount  = redEnd  - redStart
+-    var blueCount = blueEnd - blueStart
+-
+-    if(full) {
+-      if(d * redCount * (redCount + blueCount) < SCAN_COMPLETE_CUTOFF) {
+-        retval = sweep.scanComplete(
+-          d, axis, visit, 
+-          redStart, redEnd, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      }
+-    } else {
+-      if(d * Math.min(redCount, blueCount) < BRUTE_FORCE_CUTOFF) {
+-        //If input small, then use brute force
+-        retval = bruteForcePartial(
+-            d, axis, visit, flip,
+-            redStart,  redEnd,  red,  redIndex,
+-            blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      } else if(d * redCount * blueCount < SCAN_CUTOFF) {
+-        //If input medium sized, then use sweep and prune
+-        retval = sweep.scanBipartite(
+-          d, axis, visit, flip, 
+-          redStart, redEnd, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-        continue
+-      }
+-    }
+-    
+-    //First, find all red intervals whose interior contains (lo,hi)
+-    var red0 = partitionInteriorContainsInterval(
+-      d, axis, 
+-      redStart, redEnd, red, redIndex,
+-      lo, hi)
+-
+-    //Lower dimensional case
+-    if(redStart < red0) {
++module.exports = cubicHermite
++module.exports.derivative = dcubicHermite
++},{}],86:[function(require,module,exports){
++"use strict"
++
++var createThunk = require("./lib/thunk.js")
++
++function Procedure() {
++  this.argTypes = []
++  this.shimArgs = []
++  this.arrayArgs = []
++  this.arrayBlockIndices = []
++  this.scalarArgs = []
++  this.offsetArgs = []
++  this.offsetArgIndex = []
++  this.indexArgs = []
++  this.shapeArgs = []
++  this.funcName = ""
++  this.pre = null
++  this.body = null
++  this.post = null
++  this.debug = false
++}
++
++function compileCwise(user_args) {
++  //Create procedure
++  var proc = new Procedure()
++  
++  //Parse blocks
++  proc.pre    = user_args.pre
++  proc.body   = user_args.body
++  proc.post   = user_args.post
++
++  //Parse arguments
++  var proc_args = user_args.args.slice(0)
++  proc.argTypes = proc_args
++  for(var i=0; i<proc_args.length; ++i) {
++    var arg_type = proc_args[i]
++    if(arg_type === "array" || (typeof arg_type === "object" && arg_type.blockIndices)) {
++      proc.argTypes[i] = "array"
++      proc.arrayArgs.push(i)
++      proc.arrayBlockIndices.push(arg_type.blockIndices ? arg_type.blockIndices : 0)
++      proc.shimArgs.push("array" + i)
++      if(i < proc.pre.args.length && proc.pre.args[i].count>0) {
++        throw new Error("cwise: pre() block may not reference array args")
++      }
++      if(i < proc.post.args.length && proc.post.args[i].count>0) {
++        throw new Error("cwise: post() block may not reference array args")
++      }
++    } else if(arg_type === "scalar") {
++      proc.scalarArgs.push(i)
++      proc.shimArgs.push("scalar" + i)
++    } else if(arg_type === "index") {
++      proc.indexArgs.push(i)
++      if(i < proc.pre.args.length && proc.pre.args[i].count > 0) {
++        throw new Error("cwise: pre() block may not reference array index")
++      }
++      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
++        throw new Error("cwise: body() block may not write to array index")
++      }
++      if(i < proc.post.args.length && proc.post.args[i].count > 0) {
++        throw new Error("cwise: post() block may not reference array index")
++      }
++    } else if(arg_type === "shape") {
++      proc.shapeArgs.push(i)
++      if(i < proc.pre.args.length && proc.pre.args[i].lvalue) {
++        throw new Error("cwise: pre() block may not write to array shape")
++      }
++      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
++        throw new Error("cwise: body() block may not write to array shape")
++      }
++      if(i < proc.post.args.length && proc.post.args[i].lvalue) {
++        throw new Error("cwise: post() block may not write to array shape")
++      }
++    } else if(typeof arg_type === "object" && arg_type.offset) {
++      proc.argTypes[i] = "offset"
++      proc.offsetArgs.push({ array: arg_type.array, offset:arg_type.offset })
++      proc.offsetArgIndex.push(i)
++    } else {
++      throw new Error("cwise: Unknown argument type " + proc_args[i])
++    }
++  }
++  
++  //Make sure at least one array argument was specified
++  if(proc.arrayArgs.length <= 0) {
++    throw new Error("cwise: No array arguments specified")
++  }
++  
++  //Make sure arguments are correct
++  if(proc.pre.args.length > proc_args.length) {
++    throw new Error("cwise: Too many arguments in pre() block")
++  }
++  if(proc.body.args.length > proc_args.length) {
++    throw new Error("cwise: Too many arguments in body() block")
++  }
++  if(proc.post.args.length > proc_args.length) {
++    throw new Error("cwise: Too many arguments in post() block")
++  }
++
++  //Check debug flag
++  proc.debug = !!user_args.printCode || !!user_args.debug
++  
++  //Retrieve name
++  proc.funcName = user_args.funcName || "cwise"
++  
++  //Read in block size
++  proc.blockSize = user_args.blockSize || 64
++
++  return createThunk(proc)
++}
++
++module.exports = compileCwise
+ 
+-      if(d * (red0 - redStart) < BRUTE_FORCE_CUTOFF) {
+-        //Special case for small inputs: use brute force
+-        retval = bruteForceFull(
+-          d, axis+1, visit,
+-          redStart, red0, red, redIndex,
+-          blueStart, blueEnd, blue, blueIndex)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      } else if(axis === d-2) {
+-        if(flip) {
+-          retval = sweep.sweepBipartite(
+-            d, visit,
+-            blueStart, blueEnd, blue, blueIndex,
+-            redStart, red0, red, redIndex)
+-        } else {
+-          retval = sweep.sweepBipartite(
+-            d, visit,
+-            redStart, red0, red, redIndex,
+-            blueStart, blueEnd, blue, blueIndex)
+-        }
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      } else {
+-        iterPush(top++,
+-          axis+1,
+-          redStart, red0,
+-          blueStart, blueEnd,
+-          flip,
+-          -Infinity, Infinity)
+-        iterPush(top++,
+-          axis+1,
+-          blueStart, blueEnd,
+-          redStart, red0,
+-          flip^1,
+-          -Infinity, Infinity)
+-      }
+-    }
+-
+-    //Divide and conquer phase
+-    if(red0 < redEnd) {
+-
+-      //Cut blue into 3 parts:
+-      //
+-      //  Points < mid point
+-      //  Points = mid point
+-      //  Points > mid point
+-      //
+-      var blue0 = findMedian(
+-        d, axis, 
+-        blueStart, blueEnd, blue, blueIndex)
+-      var mid = blue[elemSize * blue0 + axis]
+-      var blue1 = partitionStartEqual(
+-        d, axis,
+-        blue0, blueEnd, blue, blueIndex,
+-        mid)
+-
+-      //Right case
+-      if(blue1 < blueEnd) {
+-        iterPush(top++,
+-          axis,
+-          red0, redEnd,
+-          blue1, blueEnd,
+-          (flip|4) + (full ? 16 : 0),
+-          mid, hi)
+-      }
+-
+-      //Left case
+-      if(blueStart < blue0) {
+-        iterPush(top++,
+-          axis,
+-          red0, redEnd,
+-          blueStart, blue0,
+-          (flip|2) + (full ? 16 : 0),
+-          lo, mid)
+-      }
+-
+-      //Center case (the hard part)
+-      if(blue0 + 1 === blue1) {
+-        //Optimization: Range with exactly 1 point, use a brute force scan
+-        if(full) {
+-          retval = onePointFull(
+-            d, axis, visit,
+-            red0, redEnd, red, redIndex,
+-            blue0, blue, blueIndex[blue0])
+-        } else {
+-          retval = onePointPartial(
+-            d, axis, visit, flip,
+-            red0, redEnd, red, redIndex,
+-            blue0, blue, blueIndex[blue0])
+-        }
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      } else if(blue0 < blue1) {
+-        var red1
+-        if(full) {
+-          //If full intersection, need to handle special case
+-          red1 = partitionContainsPoint(
+-            d, axis,
+-            red0, redEnd, red, redIndex,
+-            mid)
+-          if(red0 < red1) {
+-            var redX = partitionStartEqual(
+-              d, axis,
+-              red0, red1, red, redIndex,
+-              mid)
+-            if(axis === d-2) {
+-              //Degenerate sweep intersection:
+-              //  [red0, redX] with [blue0, blue1]
+-              if(red0 < redX) {
+-                retval = sweep.sweepComplete(
+-                  d, visit,
+-                  red0, redX, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-                if(retval !== void 0) {
+-                  return retval
+-                }
+-              }
+-
+-              //Normal sweep intersection:
+-              //  [redX, red1] with [blue0, blue1]
+-              if(redX < red1) {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  redX, red1, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-                if(retval !== void 0) {
+-                  return retval
+-                }
+-              }
+-            } else {
+-              if(red0 < redX) {
+-                iterPush(top++,
+-                  axis+1,
+-                  red0, redX,
+-                  blue0, blue1,
+-                  16,
+-                  -Infinity, Infinity)
+-              }
+-              if(redX < red1) {
+-                iterPush(top++,
+-                  axis+1,
+-                  redX, red1,
+-                  blue0, blue1,
+-                  0,
+-                  -Infinity, Infinity)
+-                iterPush(top++,
+-                  axis+1,
+-                  blue0, blue1,
+-                  redX, red1,
+-                  1,
+-                  -Infinity, Infinity)
+-              }
+-            }
+-          }
+-        } else {
+-          if(flip) {
+-            red1 = partitionContainsPointProper(
+-              d, axis,
+-              red0, redEnd, red, redIndex,
+-              mid)
+-          } else {
+-            red1 = partitionContainsPoint(
+-              d, axis,
+-              red0, redEnd, red, redIndex,
+-              mid)
+-          }
+-          if(red0 < red1) {
+-            if(axis === d-2) {
+-              if(flip) {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  blue0, blue1, blue, blueIndex,
+-                  red0, red1, red, redIndex)
+-              } else {
+-                retval = sweep.sweepBipartite(
+-                  d, visit,
+-                  red0, red1, red, redIndex,
+-                  blue0, blue1, blue, blueIndex)
+-              }
+-            } else {
+-              iterPush(top++,
+-                axis+1,
+-                red0, red1,
+-                blue0, blue1,
+-                flip,
+-                -Infinity, Infinity)
+-              iterPush(top++,
+-                axis+1,
+-                blue0, blue1,
+-                red0, red1,
+-                flip^1,
+-                -Infinity, Infinity)
+-            }
+-          }
+-        }
+-      }
+-    }
+-  }
+-}
+-},{"./brute":90,"./median":92,"./partition":93,"./sweep":95,"bit-twiddle":51,"typedarray-pool":458}],92:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = findMedian
+-
+-var genPartition = require('./partition')
+-
+-var partitionStartLessThan = genPartition('lo<p0', ['p0'])
+-
+-var PARTITION_THRESHOLD = 8   //Cut off for using insertion sort in findMedian
+-
+-//Base case for median finding:  Use insertion sort
+-function insertionSort(d, axis, start, end, boxes, ids) {
+-  var elemSize = 2 * d
+-  var boxPtr = elemSize * (start+1) + axis
+-  for(var i=start+1; i<end; ++i, boxPtr+=elemSize) {
+-    var x = boxes[boxPtr]
+-    for(var j=i, ptr=elemSize*(i-1); 
+-        j>start && boxes[ptr+axis] > x; 
+-        --j, ptr-=elemSize) {
+-      //Swap
+-      var aPtr = ptr
+-      var bPtr = ptr+elemSize
+-      for(var k=0; k<elemSize; ++k, ++aPtr, ++bPtr) {
+-        var y = boxes[aPtr]
+-        boxes[aPtr] = boxes[bPtr]
+-        boxes[bPtr] = y
+-      }
+-      var tmp = ids[j]
+-      ids[j] = ids[j-1]
+-      ids[j-1] = tmp
+-    }
+-  }
+-}
+-
+-//Find median using quick select algorithm
+-//  takes O(n) time with high probability
+-function findMedian(d, axis, start, end, boxes, ids) {
+-  if(end <= start+1) {
+-    return start
+-  }
+-
+-  var lo       = start
+-  var hi       = end
+-  var mid      = ((end + start) >>> 1)
+-  var elemSize = 2*d
+-  var pivot    = mid
+-  var value    = boxes[elemSize*mid+axis]
+-  
+-  while(lo < hi) {
+-    if(hi - lo < PARTITION_THRESHOLD) {
+-      insertionSort(d, axis, lo, hi, boxes, ids)
+-      value = boxes[elemSize*mid+axis]
+-      break
+-    }
+-    
+-    //Select pivot using median-of-3
+-    var count  = hi - lo
+-    var pivot0 = (Math.random()*count+lo)|0
+-    var value0 = boxes[elemSize*pivot0 + axis]
+-    var pivot1 = (Math.random()*count+lo)|0
+-    var value1 = boxes[elemSize*pivot1 + axis]
+-    var pivot2 = (Math.random()*count+lo)|0
+-    var value2 = boxes[elemSize*pivot2 + axis]
+-    if(value0 <= value1) {
+-      if(value2 >= value1) {
+-        pivot = pivot1
+-        value = value1
+-      } else if(value0 >= value2) {
+-        pivot = pivot0
+-        value = value0
+-      } else {
+-        pivot = pivot2
+-        value = value2
+-      }
+-    } else {
+-      if(value1 >= value2) {
+-        pivot = pivot1
+-        value = value1
+-      } else if(value2 >= value0) {
+-        pivot = pivot0
+-        value = value0
+-      } else {
+-        pivot = pivot2
+-        value = value2
+-      }
+-    }
+-
+-    //Swap pivot to end of array
+-    var aPtr = elemSize * (hi-1)
+-    var bPtr = elemSize * pivot
+-    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
+-      var x = boxes[aPtr]
+-      boxes[aPtr] = boxes[bPtr]
+-      boxes[bPtr] = x
+-    }
+-    var y = ids[hi-1]
+-    ids[hi-1] = ids[pivot]
+-    ids[pivot] = y
+-
+-    //Partition using pivot
+-    pivot = partitionStartLessThan(
+-      d, axis, 
+-      lo, hi-1, boxes, ids,
+-      value)
+-
+-    //Swap pivot back
+-    var aPtr = elemSize * (hi-1)
+-    var bPtr = elemSize * pivot
+-    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
+-      var x = boxes[aPtr]
+-      boxes[aPtr] = boxes[bPtr]
+-      boxes[bPtr] = x
+-    }
+-    var y = ids[hi-1]
+-    ids[hi-1] = ids[pivot]
+-    ids[pivot] = y
+-
+-    //Swap pivot to last pivot
+-    if(mid < pivot) {
+-      hi = pivot-1
+-      while(lo < hi && 
+-        boxes[elemSize*(hi-1)+axis] === value) {
+-        hi -= 1
+-      }
+-      hi += 1
+-    } else if(pivot < mid) {
+-      lo = pivot + 1
+-      while(lo < hi &&
+-        boxes[elemSize*lo+axis] === value) {
+-        lo += 1
+-      }
+-    } else {
+-      break
+-    }
+-  }
+-
+-  //Make sure pivot is at start
+-  return partitionStartLessThan(
+-    d, axis, 
+-    start, mid, boxes, ids,
+-    boxes[elemSize*mid+axis])
+-}
+-},{"./partition":93}],93:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = genPartition
+-
+-var code = 'for(var j=2*a,k=j*c,l=k,m=c,n=b,o=a+b,p=c;d>p;++p,k+=j){var _;if($)if(m===p)m+=1,l+=j;else{for(var s=0;j>s;++s){var t=e[k+s];e[k+s]=e[l],e[l++]=t}var u=f[p];f[p]=f[m],f[m++]=u}}return m'
+-
+-function genPartition(predicate, args) {
+-  var fargs ='abcdef'.split('').concat(args)
+-  var reads = []
+-  if(predicate.indexOf('lo') >= 0) {
+-    reads.push('lo=e[k+n]')
+-  }
+-  if(predicate.indexOf('hi') >= 0) {
+-    reads.push('hi=e[k+o]')
+-  }
+-  fargs.push(
+-    code.replace('_', reads.join())
+-        .replace('$', predicate))
+-  return Function.apply(void 0, fargs)
+-}
+-},{}],94:[function(require,module,exports){
+-'use strict';
+-
+-//This code is extracted from ndarray-sort
+-//It is inlined here as a temporary workaround
+-
+-module.exports = wrapper;
+-
+-var INSERT_SORT_CUTOFF = 32
+-
+-function wrapper(data, n0) {
+-  if (n0 <= 4*INSERT_SORT_CUTOFF) {
+-    insertionSort(0, n0 - 1, data);
+-  } else {
+-    quickSort(0, n0 - 1, data);
+-  }
+-}
+-
+-function insertionSort(left, right, data) {
+-  var ptr = 2*(left+1)
+-  for(var i=left+1; i<=right; ++i) {
+-    var a = data[ptr++]
+-    var b = data[ptr++]
+-    var j = i
+-    var jptr = ptr-2
+-    while(j-- > left) {
+-      var x = data[jptr-2]
+-      var y = data[jptr-1]
+-      if(x < a) {
+-        break
+-      } else if(x === a && y < b) {
+-        break
+-      }
+-      data[jptr]   = x
+-      data[jptr+1] = y
+-      jptr -= 2
+-    }
+-    data[jptr]   = a
+-    data[jptr+1] = b
+-  }
+-}
+-
+-function swap(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  var x = data[i]
+-  var y = data[i+1]
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-  data[j] = x
+-  data[j+1] = y
+-}
+-
+-function move(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-}
+-
+-function rotate(i, j, k, data) {
+-  i *= 2
+-  j *= 2
+-  k *= 2
+-  var x = data[i]
+-  var y = data[i+1]
+-  data[i] = data[j]
+-  data[i+1] = data[j+1]
+-  data[j] = data[k]
+-  data[j+1] = data[k+1]
+-  data[k] = x
+-  data[k+1] = y
+-}
+-
+-function shufflePivot(i, j, px, py, data) {
+-  i *= 2
+-  j *= 2
+-  data[i] = data[j]
+-  data[j] = px
+-  data[i+1] = data[j+1]
+-  data[j+1] = py
+-}
+-
+-function compare(i, j, data) {
+-  i *= 2
+-  j *= 2
+-  var x = data[i],
+-      y = data[j]
+-  if(x < y) {
+-    return false
+-  } else if(x === y) {
+-    return data[i+1] > data[j+1]
+-  }
+-  return true
+-}
+-
+-function comparePivot(i, y, b, data) {
+-  i *= 2
+-  var x = data[i]
+-  if(x < y) {
+-    return true
+-  } else if(x === y) {
+-    return data[i+1] < b
+-  }
+-  return false
+-}
+-
+-function quickSort(left, right, data) {
+-  var sixth = (right - left + 1) / 6 | 0, 
+-      index1 = left + sixth, 
+-      index5 = right - sixth, 
+-      index3 = left + right >> 1, 
+-      index2 = index3 - sixth, 
+-      index4 = index3 + sixth, 
+-      el1 = index1, 
+-      el2 = index2, 
+-      el3 = index3, 
+-      el4 = index4, 
+-      el5 = index5, 
+-      less = left + 1, 
+-      great = right - 1, 
+-      tmp = 0
+-  if(compare(el1, el2, data)) {
+-    tmp = el1
+-    el1 = el2
+-    el2 = tmp
+-  }
+-  if(compare(el4, el5, data)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el1, el3, data)) {
+-    tmp = el1
+-    el1 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el2, el3, data)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el1, el4, data)) {
+-    tmp = el1
+-    el1 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el3, el4, data)) {
+-    tmp = el3
+-    el3 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el2, el5, data)) {
+-    tmp = el2
+-    el2 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el2, el3, data)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el4, el5, data)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
+-
+-  var pivot1X = data[2*el2]
+-  var pivot1Y = data[2*el2+1]
+-  var pivot2X = data[2*el4]
+-  var pivot2Y = data[2*el4+1]
+-
+-  var ptr0 = 2 * el1;
+-  var ptr2 = 2 * el3;
+-  var ptr4 = 2 * el5;
+-  var ptr5 = 2 * index1;
+-  var ptr6 = 2 * index3;
+-  var ptr7 = 2 * index5;
+-  for (var i1 = 0; i1 < 2; ++i1) {
+-    var x = data[ptr0+i1];
+-    var y = data[ptr2+i1];
+-    var z = data[ptr4+i1];
+-    data[ptr5+i1] = x;
+-    data[ptr6+i1] = y;
+-    data[ptr7+i1] = z;
+-  }
+-
+-  move(index2, left, data)
+-  move(index4, right, data)
+-  for (var k = less; k <= great; ++k) {
+-    if (comparePivot(k, pivot1X, pivot1Y, data)) {
+-      if (k !== less) {
+-        swap(k, less, data)
+-      }
+-      ++less;
+-    } else {
+-      if (!comparePivot(k, pivot2X, pivot2Y, data)) {
+-        while (true) {
+-          if (!comparePivot(great, pivot2X, pivot2Y, data)) {
+-            if (--great < k) {
+-              break;
+-            }
+-            continue;
+-          } else {
+-            if (comparePivot(great, pivot1X, pivot1Y, data)) {
+-              rotate(k, less, great, data)
+-              ++less;
+-              --great;
+-            } else {
+-              swap(k, great, data)
+-              --great;
+-            }
+-            break;
+-          }
+-        }
+-      }
+-    }
+-  }
+-  shufflePivot(left, less-1, pivot1X, pivot1Y, data)
+-  shufflePivot(right, great+1, pivot2X, pivot2Y, data)
+-  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
+-    insertionSort(left, less - 2, data);
+-  } else {
+-    quickSort(left, less - 2, data);
+-  }
+-  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
+-    insertionSort(great + 2, right, data);
+-  } else {
+-    quickSort(great + 2, right, data);
+-  }
+-  if (great - less <= INSERT_SORT_CUTOFF) {
+-    insertionSort(less, great, data);
+-  } else {
+-    quickSort(less, great, data);
+-  }
+-}
+-},{}],95:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = {
+-  init:           sqInit,
+-  sweepBipartite: sweepBipartite,
+-  sweepComplete:  sweepComplete,
+-  scanBipartite:  scanBipartite,
+-  scanComplete:   scanComplete
+-}
+-
+-var pool  = require('typedarray-pool')
+-var bits  = require('bit-twiddle')
+-var isort = require('./sort')
+-
+-//Flag for blue
+-var BLUE_FLAG = (1<<28)
+-
+-//1D sweep event queue stuff (use pool to save space)
+-var INIT_CAPACITY      = 1024
+-var RED_SWEEP_QUEUE    = pool.mallocInt32(INIT_CAPACITY)
+-var RED_SWEEP_INDEX    = pool.mallocInt32(INIT_CAPACITY)
+-var BLUE_SWEEP_QUEUE   = pool.mallocInt32(INIT_CAPACITY)
+-var BLUE_SWEEP_INDEX   = pool.mallocInt32(INIT_CAPACITY)
+-var COMMON_SWEEP_QUEUE = pool.mallocInt32(INIT_CAPACITY)
+-var COMMON_SWEEP_INDEX = pool.mallocInt32(INIT_CAPACITY)
+-var SWEEP_EVENTS       = pool.mallocDouble(INIT_CAPACITY * 8)
+-
+-//Reserves memory for the 1D sweep data structures
+-function sqInit(count) {
+-  var rcount = bits.nextPow2(count)
+-  if(RED_SWEEP_QUEUE.length < rcount) {
+-    pool.free(RED_SWEEP_QUEUE)
+-    RED_SWEEP_QUEUE = pool.mallocInt32(rcount)
+-  }
+-  if(RED_SWEEP_INDEX.length < rcount) {
+-    pool.free(RED_SWEEP_INDEX)
+-    RED_SWEEP_INDEX = pool.mallocInt32(rcount)
+-  }
+-  if(BLUE_SWEEP_QUEUE.length < rcount) {
+-    pool.free(BLUE_SWEEP_QUEUE)
+-    BLUE_SWEEP_QUEUE = pool.mallocInt32(rcount)
+-  }
+-  if(BLUE_SWEEP_INDEX.length < rcount) {
+-    pool.free(BLUE_SWEEP_INDEX)
+-    BLUE_SWEEP_INDEX = pool.mallocInt32(rcount)
+-  }
+-  if(COMMON_SWEEP_QUEUE.length < rcount) {
+-    pool.free(COMMON_SWEEP_QUEUE)
+-    COMMON_SWEEP_QUEUE = pool.mallocInt32(rcount)
+-  }
+-  if(COMMON_SWEEP_INDEX.length < rcount) {
+-    pool.free(COMMON_SWEEP_INDEX)
+-    COMMON_SWEEP_INDEX = pool.mallocInt32(rcount)
+-  }
+-  var eventLength = 8 * rcount
+-  if(SWEEP_EVENTS.length < eventLength) {
+-    pool.free(SWEEP_EVENTS)
+-    SWEEP_EVENTS = pool.mallocDouble(eventLength)
+-  }
+-}
+-
+-//Remove an item from the active queue in O(1)
+-function sqPop(queue, index, count, item) {
+-  var idx = index[item]
+-  var top = queue[count-1]
+-  queue[idx] = top
+-  index[top] = idx
+-}
+-
+-//Insert an item into the active queue in O(1)
+-function sqPush(queue, index, count, item) {
+-  queue[count] = item
+-  index[item]  = count
+-}
+-
+-//Recursion base case: use 1D sweep algorithm
+-function sweepBipartite(
+-    d, visit,
+-    redStart,  redEnd, red, redIndex,
+-    blueStart, blueEnd, blue, blueIndex) {
+-
+-  //store events as pairs [coordinate, idx]
+-  //
+-  //  red create:  -(idx+1)
+-  //  red destroy: idx
+-  //  blue create: -(idx+BLUE_FLAG)
+-  //  blue destroy: idx+BLUE_FLAG
+-  //
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = d-1
+-  var iend     = elemSize-1
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = redIndex[i]
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -(idx+1)
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = blueIndex[i]+BLUE_FLAG
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive  = 0
+-  var blueActive = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e >= BLUE_FLAG) {
+-      //blue destroy event
+-      e = (e-BLUE_FLAG)|0
+-      sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, e)
+-    } else if(e >= 0) {
+-      //red destroy event
+-      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e)
+-    } else if(e <= -BLUE_FLAG) {
+-      //blue create event
+-      e = (-e-BLUE_FLAG)|0
+-      for(var j=0; j<redActive; ++j) {
+-        var retval = visit(RED_SWEEP_QUEUE[j], e)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      }
+-      sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, e)
+-    } else {
+-      //red create event
+-      e = (-e-1)|0
+-      for(var j=0; j<blueActive; ++j) {
+-        var retval = visit(e, BLUE_SWEEP_QUEUE[j])
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      }
+-      sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, e)
+-    }
+-  }
+-}
+-
+-//Complete sweep
+-function sweepComplete(d, visit, 
+-  redStart, redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = d-1
+-  var iend     = elemSize-1
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = (redIndex[i]+1)<<1
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = (blueIndex[i]+1)<<1
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = (-idx)|1
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx|1
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  var blueActive   = 0
+-  var commonActive = 0
+-  for(var i=0; i<n; ++i) {
+-    var e     = SWEEP_EVENTS[2*i+1]|0
+-    var color = e&1
+-    if(i < n-1 && (e>>1) === (SWEEP_EVENTS[2*i+3]>>1)) {
+-      color = 2
+-      i += 1
+-    }
+-    
+-    if(e < 0) {
+-      //Create event
+-      var id = -(e>>1) - 1
+-
+-      //Intersect with common
+-      for(var j=0; j<commonActive; ++j) {
+-        var retval = visit(COMMON_SWEEP_QUEUE[j], id)
+-        if(retval !== void 0) {
+-          return retval
+-        }
+-      }
+-
+-      if(color !== 0) {
+-        //Intersect with red
+-        for(var j=0; j<redActive; ++j) {
+-          var retval = visit(RED_SWEEP_QUEUE[j], id)
+-          if(retval !== void 0) {
+-            return retval
+-          }
+-        }
+-      }
+-
+-      if(color !== 1) {
+-        //Intersect with blue
+-        for(var j=0; j<blueActive; ++j) {
+-          var retval = visit(BLUE_SWEEP_QUEUE[j], id)
+-          if(retval !== void 0) {
+-            return retval
+-          }
+-        }
+-      }
+-
+-      if(color === 0) {
+-        //Red
+-        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, id)
+-      } else if(color === 1) {
+-        //Blue
+-        sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, id)
+-      } else if(color === 2) {
+-        //Both
+-        sqPush(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive++, id)
+-      }
+-    } else {
+-      //Destroy event
+-      var id = (e>>1) - 1
+-      if(color === 0) {
+-        //Red
+-        sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, id)
+-      } else if(color === 1) {
+-        //Blue
+-        sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, id)
+-      } else if(color === 2) {
+-        //Both
+-        sqPop(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive--, id)
+-      }
+-    }
+-  }
+-}
+-
+-//Sweep and prune/scanline algorithm:
+-//  Scan along axis, detect intersections
+-//  Brute force all boxes along axis
+-function scanBipartite(
+-  d, axis, visit, flip,
+-  redStart,  redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-  
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = axis
+-  var iend     = axis+d
+-
+-  var redShift  = 1
+-  var blueShift = 1
+-  if(flip) {
+-    blueShift = BLUE_FLAG
+-  } else {
+-    redShift  = BLUE_FLAG
+-  }
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = i + redShift
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = i + blueShift
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e < 0) {
+-      var idx   = -e
+-      var isRed = false
+-      if(idx >= BLUE_FLAG) {
+-        isRed = !flip
+-        idx -= BLUE_FLAG 
+-      } else {
+-        isRed = !!flip
+-        idx -= 1
+-      }
+-      if(isRed) {
+-        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, idx)
+-      } else {
+-        var blueId  = blueIndex[idx]
+-        var bluePtr = elemSize * idx
+-        
+-        var b0 = blue[bluePtr+axis+1]
+-        var b1 = blue[bluePtr+axis+1+d]
+-
+-red_loop:
+-        for(var j=0; j<redActive; ++j) {
+-          var oidx   = RED_SWEEP_QUEUE[j]
+-          var redPtr = elemSize * oidx
+-
+-          if(b1 < red[redPtr+axis+1] || 
+-             red[redPtr+axis+1+d] < b0) {
+-            continue
+-          }
+-
+-          for(var k=axis+2; k<d; ++k) {
+-            if(blue[bluePtr + k + d] < red[redPtr + k] || 
+-               red[redPtr + k + d] < blue[bluePtr + k]) {
+-              continue red_loop
+-            }
+-          }
+-
+-          var redId  = redIndex[oidx]
+-          var retval
+-          if(flip) {
+-            retval = visit(blueId, redId)
+-          } else {
+-            retval = visit(redId, blueId)
+-          }
+-          if(retval !== void 0) {
+-            return retval 
+-          }
+-        }
+-      }
+-    } else {
+-      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e - redShift)
+-    }
+-  }
+-}
+-
+-function scanComplete(
+-  d, axis, visit,
+-  redStart,  redEnd, red, redIndex,
+-  blueStart, blueEnd, blue, blueIndex) {
+-
+-  var ptr      = 0
+-  var elemSize = 2*d
+-  var istart   = axis
+-  var iend     = axis+d
+-
+-  for(var i=redStart; i<redEnd; ++i) {
+-    var idx = i + BLUE_FLAG
+-    var redOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
+-    SWEEP_EVENTS[ptr++] = idx
+-  }
+-  for(var i=blueStart; i<blueEnd; ++i) {
+-    var idx = i + 1
+-    var blueOffset = elemSize*i
+-    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
+-    SWEEP_EVENTS[ptr++] = -idx
+-  }
+-
+-  //process events from left->right
+-  var n = ptr >>> 1
+-  isort(SWEEP_EVENTS, n)
+-  
+-  var redActive    = 0
+-  for(var i=0; i<n; ++i) {
+-    var e = SWEEP_EVENTS[2*i+1]|0
+-    if(e < 0) {
+-      var idx   = -e
+-      if(idx >= BLUE_FLAG) {
+-        RED_SWEEP_QUEUE[redActive++] = idx - BLUE_FLAG
+-      } else {
+-        idx -= 1
+-        var blueId  = blueIndex[idx]
+-        var bluePtr = elemSize * idx
+-
+-        var b0 = blue[bluePtr+axis+1]
+-        var b1 = blue[bluePtr+axis+1+d]
+-
+-red_loop:
+-        for(var j=0; j<redActive; ++j) {
+-          var oidx   = RED_SWEEP_QUEUE[j]
+-          var redId  = redIndex[oidx]
+-
+-          if(redId === blueId) {
+-            break
+-          }
+-
+-          var redPtr = elemSize * oidx
+-          if(b1 < red[redPtr+axis+1] || 
+-            red[redPtr+axis+1+d] < b0) {
+-            continue
+-          }
+-          for(var k=axis+2; k<d; ++k) {
+-            if(blue[bluePtr + k + d] < red[redPtr + k] || 
+-               red[redPtr + k + d]   < blue[bluePtr + k]) {
+-              continue red_loop
+-            }
+-          }
+-
+-          var retval = visit(redId, blueId)
+-          if(retval !== void 0) {
+-            return retval 
+-          }
+-        }
+-      }
+-    } else {
+-      var idx = e - BLUE_FLAG
+-      for(var j=redActive-1; j>=0; --j) {
+-        if(RED_SWEEP_QUEUE[j] === idx) {
+-          for(var k=j+1; k<redActive; ++k) {
+-            RED_SWEEP_QUEUE[k-1] = RED_SWEEP_QUEUE[k]
+-          }
+-          break
+-        }
+-      }
+-      --redActive
+-    }
+-  }
+-}
+-},{"./sort":94,"bit-twiddle":51,"typedarray-pool":458}],96:[function(require,module,exports){
+-(function (Buffer){
+-var hasTypedArrays = false
+-if(typeof Float64Array !== "undefined") {
+-  var DOUBLE_VIEW = new Float64Array(1)
+-    , UINT_VIEW   = new Uint32Array(DOUBLE_VIEW.buffer)
+-  DOUBLE_VIEW[0] = 1.0
+-  hasTypedArrays = true
+-  if(UINT_VIEW[1] === 0x3ff00000) {
+-    //Use little endian
+-    module.exports = function doubleBitsLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return [ UINT_VIEW[0], UINT_VIEW[1] ]
+-    }
+-    function toDoubleLE(lo, hi) {
+-      UINT_VIEW[0] = lo
+-      UINT_VIEW[1] = hi
+-      return DOUBLE_VIEW[0]
+-    }
+-    module.exports.pack = toDoubleLE
+-    function lowUintLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[0]
+-    }
+-    module.exports.lo = lowUintLE
+-    function highUintLE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[1]
+-    }
+-    module.exports.hi = highUintLE
+-  } else if(UINT_VIEW[0] === 0x3ff00000) {
+-    //Use big endian
+-    module.exports = function doubleBitsBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return [ UINT_VIEW[1], UINT_VIEW[0] ]
+-    }
+-    function toDoubleBE(lo, hi) {
+-      UINT_VIEW[1] = lo
+-      UINT_VIEW[0] = hi
+-      return DOUBLE_VIEW[0]
+-    }
+-    module.exports.pack = toDoubleBE
+-    function lowUintBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[1]
+-    }
+-    module.exports.lo = lowUintBE
+-    function highUintBE(n) {
+-      DOUBLE_VIEW[0] = n
+-      return UINT_VIEW[0]
+-    }
+-    module.exports.hi = highUintBE
+-  } else {
+-    hasTypedArrays = false
+-  }
+-}
+-if(!hasTypedArrays) {
+-  var buffer = new Buffer(8)
+-  module.exports = function doubleBits(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return [ buffer.readUInt32LE(0, true), buffer.readUInt32LE(4, true) ]
+-  }
+-  function toDouble(lo, hi) {
+-    buffer.writeUInt32LE(lo, 0, true)
+-    buffer.writeUInt32LE(hi, 4, true)
+-    return buffer.readDoubleLE(0, true)
+-  }
+-  module.exports.pack = toDouble  
+-  function lowUint(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return buffer.readUInt32LE(0, true)
+-  }
+-  module.exports.lo = lowUint
+-  function highUint(n) {
+-    buffer.writeDoubleLE(n, 0, true)
+-    return buffer.readUInt32LE(4, true)
+-  }
+-  module.exports.hi = highUint
+-}
+-
+-module.exports.sign = function(n) {
+-  return module.exports.hi(n) >>> 31
+-}
+-
+-module.exports.exponent = function(n) {
+-  var b = module.exports.hi(n)
+-  return ((b<<1) >>> 21) - 1023
+-}
+-
+-module.exports.fraction = function(n) {
+-  var lo = module.exports.lo(n)
+-  var hi = module.exports.hi(n)
+-  var b = hi & ((1<<20) - 1)
+-  if(hi & 0x7ff00000) {
+-    b += (1<<20)
+-  }
+-  return [lo, b]
+-}
+-
+-module.exports.denormalized = function(n) {
+-  var hi = module.exports.hi(n)
+-  return !(hi & 0x7ff00000)
+-}
+-}).call(this,require("buffer").Buffer)
+-},{"buffer":53}],97:[function(require,module,exports){
+-"use strict"
+-
+-var doubleBits = require("double-bits")
+-
+-var SMALLEST_DENORM = Math.pow(2, -1074)
+-var UINT_MAX = (-1)>>>0
+-
+-module.exports = nextafter
+-
+-function nextafter(x, y) {
+-  if(isNaN(x) || isNaN(y)) {
+-    return NaN
+-  }
+-  if(x === y) {
+-    return x
+-  }
+-  if(x === 0) {
+-    if(y < 0) {
+-      return -SMALLEST_DENORM
+-    } else {
+-      return SMALLEST_DENORM
+-    }
+-  }
+-  var hi = doubleBits.hi(x)
+-  var lo = doubleBits.lo(x)
+-  if((y > x) === (x > 0)) {
+-    if(lo === UINT_MAX) {
+-      hi += 1
+-      lo = 0
+-    } else {
+-      lo += 1
+-    }
+-  } else {
+-    if(lo === 0) {
+-      lo = UINT_MAX
+-      hi -= 1
+-    } else {
+-      lo -= 1
+-    }
+-  }
+-  return doubleBits.pack(lo, hi)
+-}
+-},{"double-bits":96}],98:[function(require,module,exports){
+-'use strict'
+-
+-var bnadd = require('big-rat/add')
+-
+-module.exports = add
+-
+-function add(a, b) {
+-  var n = a.length
+-  var r = new Array(n)
+-    for(var i=0; i<n; ++i) {
+-    r[i] = bnadd(a[i], b[i])
+-  }
+-  return r
+-}
+-
+-},{"big-rat/add":72}],99:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = float2rat
+-
+-var rat = require('big-rat')
+-
+-function float2rat(v) {
+-  var result = new Array(v.length)
+-  for(var i=0; i<v.length; ++i) {
+-    result[i] = rat(v[i])
+-  }
+-  return result
+-}
+-
+-},{"big-rat":75}],100:[function(require,module,exports){
+-'use strict'
+-
+-var rat = require('big-rat')
+-var mul = require('big-rat/mul')
+-
+-module.exports = muls
+-
+-function muls(a, x) {
+-  var s = rat(x)
+-  var n = a.length
+-  var r = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    r[i] = mul(a[i], s)
+-  }
+-  return r
+-}
+-
+-},{"big-rat":75,"big-rat/mul":84}],101:[function(require,module,exports){
+-'use strict'
+-
+-var bnsub = require('big-rat/sub')
+-
+-module.exports = sub
+-
+-function sub(a, b) {
+-  var n = a.length
+-  var r = new Array(n)
+-    for(var i=0; i<n; ++i) {
+-    r[i] = bnsub(a[i], b[i])
+-  }
+-  return r
+-}
+-
+-},{"big-rat/sub":87}],102:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = segmentsIntersect
+-
+-var orient = require("robust-orientation")[3]
+-
+-function checkCollinear(a0, a1, b0, b1) {
+-
+-  for(var d=0; d<2; ++d) {
+-    var x0 = a0[d]
+-    var y0 = a1[d]
+-    var l0 = Math.min(x0, y0)
+-    var h0 = Math.max(x0, y0)    
+-
+-    var x1 = b0[d]
+-    var y1 = b1[d]
+-    var l1 = Math.min(x1, y1)
+-    var h1 = Math.max(x1, y1)    
+-
+-    if(h1 < l0 || h0 < l1) {
+-      return false
+-    }
+-  }
+-
+-  return true
+-}
+-
+-function segmentsIntersect(a0, a1, b0, b1) {
+-  var x0 = orient(a0, b0, b1)
+-  var y0 = orient(a1, b0, b1)
+-  if((x0 > 0 && y0 > 0) || (x0 < 0 && y0 < 0)) {
+-    return false
+-  }
+-
+-  var x1 = orient(b0, a0, a1)
+-  var y1 = orient(b1, a0, a1)
+-  if((x1 > 0 && y1 > 0) || (x1 < 0 && y1 < 0)) {
+-    return false
+-  }
+-
+-  //Check for degenerate collinear case
+-  if(x0 === 0 && y0 === 0 && x1 === 0 && y1 === 0) {
+-    return checkCollinear(a0, a1, b0, b1)
+-  }
+-
+-  return true
+-}
+-},{"robust-orientation":439}],103:[function(require,module,exports){
+-"use strict"; "use restrict";
+-
+-module.exports = UnionFind;
+-
+-function UnionFind(count) {
+-  this.roots = new Array(count);
+-  this.ranks = new Array(count);
+-  
+-  for(var i=0; i<count; ++i) {
+-    this.roots[i] = i;
+-    this.ranks[i] = 0;
+-  }
+-}
+-
+-var proto = UnionFind.prototype
+-
+-Object.defineProperty(proto, "length", {
+-  "get": function() {
+-    return this.roots.length
+-  }
+-})
+-
+-proto.makeSet = function() {
+-  var n = this.roots.length;
+-  this.roots.push(n);
+-  this.ranks.push(0);
+-  return n;
+-}
+-
+-proto.find = function(x) {
+-  var x0 = x
+-  var roots = this.roots;
+-  while(roots[x] !== x) {
+-    x = roots[x]
+-  }
+-  while(roots[x0] !== x) {
+-    var y = roots[x0]
+-    roots[x0] = x
+-    x0 = y
+-  }
+-  return x;
+-}
+-
+-proto.link = function(x, y) {
+-  var xr = this.find(x)
+-    , yr = this.find(y);
+-  if(xr === yr) {
+-    return;
+-  }
+-  var ranks = this.ranks
+-    , roots = this.roots
+-    , xd    = ranks[xr]
+-    , yd    = ranks[yr];
+-  if(xd < yd) {
+-    roots[xr] = yr;
+-  } else if(yd < xd) {
+-    roots[yr] = xr;
+-  } else {
+-    roots[yr] = xr;
+-    ++ranks[xr];
+-  }
+-}
+-},{}],104:[function(require,module,exports){
+-(function (Buffer){
+-var clone = (function() {
+-'use strict';
+-
+-/**
+- * Clones (copies) an Object using deep copying.
+- *
+- * This function supports circular references by default, but if you are certain
+- * there are no circular references in your object, you can save some CPU time
+- * by calling clone(obj, false).
+- *
+- * Caution: if `circular` is false and `parent` contains circular references,
+- * your program may enter an infinite loop and crash.
+- *
+- * @param `parent` - the object to be cloned
+- * @param `circular` - set to true if the object to be cloned may contain
+- *    circular references. (optional - true by default)
+- * @param `depth` - set to a number if the object is only to be cloned to
+- *    a particular depth. (optional - defaults to Infinity)
+- * @param `prototype` - sets the prototype to be used when cloning an object.
+- *    (optional - defaults to parent prototype).
+-*/
+-function clone(parent, circular, depth, prototype) {
+-  var filter;
+-  if (typeof circular === 'object') {
+-    depth = circular.depth;
+-    prototype = circular.prototype;
+-    filter = circular.filter;
+-    circular = circular.circular
+-  }
+-  // maintain two arrays for circular references, where corresponding parents
+-  // and children have the same index
+-  var allParents = [];
+-  var allChildren = [];
+-
+-  var useBuffer = typeof Buffer != 'undefined';
+-
+-  if (typeof circular == 'undefined')
+-    circular = true;
+-
+-  if (typeof depth == 'undefined')
+-    depth = Infinity;
+-
+-  // recurse this function so we don't reset allParents and allChildren
+-  function _clone(parent, depth) {
+-    // cloning null always returns null
+-    if (parent === null)
+-      return null;
+-
+-    if (depth == 0)
+-      return parent;
+-
+-    var child;
+-    var proto;
+-    if (typeof parent != 'object') {
+-      return parent;
+-    }
+-
+-    if (clone.__isArray(parent)) {
+-      child = [];
+-    } else if (clone.__isRegExp(parent)) {
+-      child = new RegExp(parent.source, __getRegExpFlags(parent));
+-      if (parent.lastIndex) child.lastIndex = parent.lastIndex;
+-    } else if (clone.__isDate(parent)) {
+-      child = new Date(parent.getTime());
+-    } else if (useBuffer && Buffer.isBuffer(parent)) {
+-      child = new Buffer(parent.length);
+-      parent.copy(child);
+-      return child;
+-    } else {
+-      if (typeof prototype == 'undefined') {
+-        proto = Object.getPrototypeOf(parent);
+-        child = Object.create(proto);
+-      }
+-      else {
+-        child = Object.create(prototype);
+-        proto = prototype;
+-      }
+-    }
+-
+-    if (circular) {
+-      var index = allParents.indexOf(parent);
+-
+-      if (index != -1) {
+-        return allChildren[index];
+-      }
+-      allParents.push(parent);
+-      allChildren.push(child);
+-    }
+-
+-    for (var i in parent) {
+-      var attrs;
+-      if (proto) {
+-        attrs = Object.getOwnPropertyDescriptor(proto, i);
+-      }
+-
+-      if (attrs && attrs.set == null) {
+-        continue;
+-      }
+-      child[i] = _clone(parent[i], depth - 1);
+-    }
+-
+-    return child;
+-  }
+-
+-  return _clone(parent, depth);
+-}
+-
+-/**
+- * Simple flat clone using prototype, accepts only objects, usefull for property
+- * override on FLAT configuration object (no nested props).
+- *
+- * USE WITH CAUTION! This may not behave as you wish if you do not know how this
+- * works.
+- */
+-clone.clonePrototype = function clonePrototype(parent) {
+-  if (parent === null)
+-    return null;
+-
+-  var c = function () {};
+-  c.prototype = parent;
+-  return new c();
+-};
+-
+-// private utility functions
+-
+-function __objToStr(o) {
+-  return Object.prototype.toString.call(o);
+-};
+-clone.__objToStr = __objToStr;
+-
+-function __isDate(o) {
+-  return typeof o === 'object' && __objToStr(o) === '[object Date]';
+-};
+-clone.__isDate = __isDate;
+-
+-function __isArray(o) {
+-  return typeof o === 'object' && __objToStr(o) === '[object Array]';
+-};
+-clone.__isArray = __isArray;
+-
+-function __isRegExp(o) {
+-  return typeof o === 'object' && __objToStr(o) === '[object RegExp]';
+-};
+-clone.__isRegExp = __isRegExp;
+-
+-function __getRegExpFlags(re) {
+-  var flags = '';
+-  if (re.global) flags += 'g';
+-  if (re.ignoreCase) flags += 'i';
+-  if (re.multiline) flags += 'm';
+-  return flags;
+-};
+-clone.__getRegExpFlags = __getRegExpFlags;
+-
+-return clone;
+-})();
+-
+-if (typeof module === 'object' && module.exports) {
+-  module.exports = clone;
+-}
+-
+-}).call(this,require("buffer").Buffer)
+-},{"buffer":53}],105:[function(require,module,exports){
+-module.exports={"jet":[{"index":0,"rgb":[0,0,131]},{"index":0.125,"rgb":[0,60,170]},{"index":0.375,"rgb":[5,255,255]},{"index":0.625,"rgb":[255,255,0]},{"index":0.875,"rgb":[250,0,0]},{"index":1,"rgb":[128,0,0]}],"hsv":[{"index":0,"rgb":[255,0,0]},{"index":0.169,"rgb":[253,255,2]},{"index":0.173,"rgb":[247,255,2]},{"index":0.337,"rgb":[0,252,4]},{"index":0.341,"rgb":[0,252,10]},{"index":0.506,"rgb":[1,249,255]},{"index":0.671,"rgb":[2,0,253]},{"index":0.675,"rgb":[8,0,253]},{"index":0.839,"rgb":[255,0,251]},{"index":0.843,"rgb":[255,0,245]},{"index":1,"rgb":[255,0,6]}],"hot":[{"index":0,"rgb":[0,0,0]},{"index":0.3,"rgb":[230,0,0]},{"index":0.6,"rgb":[255,210,0]},{"index":1,"rgb":[255,255,255]}],"cool":[{"index":0,"rgb":[0,255,255]},{"index":1,"rgb":[255,0,255]}],"spring":[{"index":0,"rgb":[255,0,255]},{"index":1,"rgb":[255,255,0]}],"summer":[{"index":0,"rgb":[0,128,102]},{"index":1,"rgb":[255,255,102]}],"autumn":[{"index":0,"rgb":[255,0,0]},{"index":1,"rgb":[255,255,0]}],"winter":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[0,255,128]}],"bone":[{"index":0,"rgb":[0,0,0]},{"index":0.376,"rgb":[84,84,116]},{"index":0.753,"rgb":[169,200,200]},{"index":1,"rgb":[255,255,255]}],"copper":[{"index":0,"rgb":[0,0,0]},{"index":0.804,"rgb":[255,160,102]},{"index":1,"rgb":[255,199,127]}],"greys":[{"index":0,"rgb":[0,0,0]},{"index":1,"rgb":[255,255,255]}],"yignbu":[{"index":0,"rgb":[8,29,88]},{"index":0.125,"rgb":[37,52,148]},{"index":0.25,"rgb":[34,94,168]},{"index":0.375,"rgb":[29,145,192]},{"index":0.5,"rgb":[65,182,196]},{"index":0.625,"rgb":[127,205,187]},{"index":0.75,"rgb":[199,233,180]},{"index":0.875,"rgb":[237,248,217]},{"index":1,"rgb":[255,255,217]}],"greens":[{"index":0,"rgb":[0,68,27]},{"index":0.125,"rgb":[0,109,44]},{"index":0.25,"rgb":[35,139,69]},{"index":0.375,"rgb":[65,171,93]},{"index":0.5,"rgb":[116,196,118]},{"index":0.625,"rgb":[161,217,155]},{"index":0.75,"rgb":[199,233,192]},{"index":0.875,"rgb":[229,245,224]},{"index":1,"rgb":[247,252,245]}],"yiorrd":[{"index":0,"rgb":[128,0,38]},{"index":0.125,"rgb":[189,0,38]},{"index":0.25,"rgb":[227,26,28]},{"index":0.375,"rgb":[252,78,42]},{"index":0.5,"rgb":[253,141,60]},{"index":0.625,"rgb":[254,178,76]},{"index":0.75,"rgb":[254,217,118]},{"index":0.875,"rgb":[255,237,160]},{"index":1,"rgb":[255,255,204]}],"bluered":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[255,0,0]}],"rdbu":[{"index":0,"rgb":[5,10,172]},{"index":0.35,"rgb":[106,137,247]},{"index":0.5,"rgb":[190,190,190]},{"index":0.6,"rgb":[220,170,132]},{"index":0.7,"rgb":[230,145,90]},{"index":1,"rgb":[178,10,28]}],"picnic":[{"index":0,"rgb":[0,0,255]},{"index":0.1,"rgb":[51,153,255]},{"index":0.2,"rgb":[102,204,255]},{"index":0.3,"rgb":[153,204,255]},{"index":0.4,"rgb":[204,204,255]},{"index":0.5,"rgb":[255,255,255]},{"index":0.6,"rgb":[255,204,255]},{"index":0.7,"rgb":[255,153,255]},{"index":0.8,"rgb":[255,102,204]},{"index":0.9,"rgb":[255,102,102]},{"index":1,"rgb":[255,0,0]}],"rainbow":[{"index":0,"rgb":[150,0,90]},{"index":0.125,"rgb":[0,0,200]},{"index":0.25,"rgb":[0,25,255]},{"index":0.375,"rgb":[0,152,255]},{"index":0.5,"rgb":[44,255,150]},{"index":0.625,"rgb":[151,255,0]},{"index":0.75,"rgb":[255,234,0]},{"index":0.875,"rgb":[255,111,0]},{"index":1,"rgb":[255,0,0]}],"portland":[{"index":0,"rgb":[12,51,131]},{"index":0.25,"rgb":[10,136,186]},{"index":0.5,"rgb":[242,211,56]},{"index":0.75,"rgb":[242,143,56]},{"index":1,"rgb":[217,30,30]}],"blackbody":[{"index":0,"rgb":[0,0,0]},{"index":0.2,"rgb":[230,0,0]},{"index":0.4,"rgb":[230,210,0]},{"index":0.7,"rgb":[255,255,255]},{"index":1,"rgb":[160,200,255]}],"earth":[{"index":0,"rgb":[0,0,130]},{"index":0.1,"rgb":[0,180,180]},{"index":0.2,"rgb":[40,210,40]},{"index":0.4,"rgb":[230,230,50]},{"index":0.6,"rgb":[120,70,20]},{"index":1,"rgb":[255,255,255]}],"electric":[{"index":0,"rgb":[0,0,0]},{"index":0.15,"rgb":[30,0,100]},{"index":0.4,"rgb":[120,0,100]},{"index":0.6,"rgb":[160,90,0]},{"index":0.8,"rgb":[230,200,0]},{"index":1,"rgb":[255,250,220]}], "alpha": [{"index":0, "rgb": [255,255,255,0]},{"index":0, "rgb": [255,255,255,1]}]};
+-
+-},{}],106:[function(require,module,exports){
+-/*
+- * Ben Postlethwaite
+- * January 2013
+- * License MIT
+- */
+-'use strict';
+-
+-var at = require('arraytools');
+-var clone = require('clone');
+-var colorScale = require('./colorScales');
+-
+-module.exports = function (spec) {
+-
+-    /*
+-     * Default Options
+-     */
+-    var indicies, rgba, fromrgba, torgba,
+-        nsteps, cmap, colormap, format,
+-        nshades, colors, alpha, index, i,
+-        r = [],
+-        g = [],
+-        b = [],
+-        a = [];
+-
+-    if ( !at.isPlainObject(spec) ) spec = {};
+-
+-    nshades = spec.nshades || 72;
+-    format = spec.format || 'hex';
+-
+-    colormap = spec.colormap;
+-    if (!colormap) colormap = 'jet';
+-
+-    if (typeof colormap === 'string') {
+-        colormap = colormap.toLowerCase();
+-
+-        if (!colorScale[colormap]) {
+-            throw Error(colormap + ' not a supported colorscale');
+-        }
+-
+-        cmap = clone(colorScale[colormap]);
+-
+-    } else if (Array.isArray(colormap)) {
+-        cmap = clone(colormap);
+-
+-    } else {
+-        throw Error('unsupported colormap option', colormap);
+-    }
+-
+-    if (cmap.length > nshades) {
+-        throw new Error(
+-            colormap+' map requires nshades to be at least size '+cmap.length
+-        );
+-    }
+-
+-    if (!Array.isArray(spec.alpha)) {
+-
+-        if (typeof spec.alpha === 'number') {
+-            alpha = [spec.alpha, spec.alpha];
+-
+-        } else {
+-            alpha = [1, 1];
+-        }
+-
+-    } else if (spec.alpha.length !== 2) {
+-        alpha = [1, 1];
+-
+-    } else {
+-        alpha = clone(spec.alpha);
+-    }
+-
+-    /*
+-     * map index points from 0->1 to 0 -> n-1
+-     */
+-    indicies = cmap.map(function(c) {
+-        return Math.round(c.index * nshades);
+-    });
+-
+-    /*
+-     * Add alpha channel to the map
+-     */
+-    if (alpha[0] < 0) alpha[0] = 0;
+-    if (alpha[1] < 0) alpha[0] = 0;
+-    if (alpha[0] > 1) alpha[0] = 1;
+-    if (alpha[1] > 1) alpha[0] = 1;
+-
+-    for (i = 0; i < indicies.length; ++i) {
+-        index = cmap[i].index;
+-        rgba = cmap[i].rgb;
+-
+-        // if user supplies their own map use it
+-        if (rgba.length === 4 && rgba[3] >= 0 && rgba[3] <= 1) continue;
+-        rgba[3] = alpha[0] + (alpha[1] - alpha[0])*index;
+-    }
+-
+-    /*
+-     * map increasing linear values between indicies to
+-     * linear steps in colorvalues
+-     */
+-    for (i = 0; i < indicies.length-1; ++i) {
+-        nsteps = indicies[i+1] - indicies[i];
+-        fromrgba = cmap[i].rgb;
+-        torgba = cmap[i+1].rgb;
+-        r = r.concat(at.linspace(fromrgba[0], torgba[0], nsteps ) );
+-        g = g.concat(at.linspace(fromrgba[1], torgba[1], nsteps ) );
+-        b = b.concat(at.linspace(fromrgba[2], torgba[2], nsteps ) );
+-        a = a.concat(at.linspace(fromrgba[3], torgba[3], nsteps ) );
+-    }
+-
+-    r = r.map( Math.round );
+-    g = g.map( Math.round );
+-    b = b.map( Math.round );
+-
+-    colors = at.zip(r, g, b, a);
+-
+-    if (format === 'hex') colors = colors.map( rgb2hex );
+-    if (format === 'rgbaString') colors = colors.map( rgbaStr );
+-
+-    return colors;
+-};
+-
+-
+-function rgb2hex (rgba) {
+-    var dig, hex = '#';
+-    for (var i = 0; i < 3; ++i) {
+-        dig = rgba[i];
+-        dig = dig.toString(16);
+-        hex += ('00' + dig).substr( dig.length );
+-    }
+-    return hex;
+-}
+-
+-function rgbaStr (rgba) {
+-    return 'rgba(' + rgba.join(',') + ')';
+-}
+-
+-},{"./colorScales":105,"arraytools":50,"clone":104}],107:[function(require,module,exports){
+-module.exports = compareCells
+-
+-var min = Math.min
+-
+-function compareInt(a, b) {
+-  return a - b
+-}
+-
+-function compareCells(a, b) {
+-  var n = a.length
+-    , t = a.length - b.length
+-  if(t) {
+-    return t
+-  }
+-  switch(n) {
+-    case 0:
+-      return 0
+-    case 1:
+-      return a[0] - b[0]
+-    case 2:
+-      return (a[0]+a[1]-b[0]-b[1]) ||
+-             min(a[0],a[1]) - min(b[0],b[1])
+-    case 3:
+-      var l1 = a[0]+a[1]
+-        , m1 = b[0]+b[1]
+-      t = l1+a[2] - (m1+b[2])
+-      if(t) {
+-        return t
+-      }
+-      var l0 = min(a[0], a[1])
+-        , m0 = min(b[0], b[1])
+-      return min(l0, a[2]) - min(m0, b[2]) ||
+-             min(l0+a[2], l1) - min(m0+b[2], m1)
+-    case 4:
+-      var aw=a[0], ax=a[1], ay=a[2], az=a[3]
+-        , bw=b[0], bx=b[1], by=b[2], bz=b[3]
+-      return (aw+ax+ay+az)-(bw+bx+by+bz) ||
+-             min(aw,ax,ay,az)-min(bw,bx,by,bz,bw) ||
+-             min(aw+ax,aw+ay,aw+az,ax+ay,ax+az,ay+az) -
+-               min(bw+bx,bw+by,bw+bz,bx+by,bx+bz,by+bz) ||
+-             min(aw+ax+ay,aw+ax+az,aw+ay+az,ax+ay+az) -
+-               min(bw+bx+by,bw+bx+bz,bw+by+bz,bx+by+bz)
+-    default:
+-      var as = a.slice().sort(compareInt)
+-      var bs = b.slice().sort(compareInt)
+-      for(var i=0; i<n; ++i) {
+-        t = as[i] - bs[i]
+-        if(t) {
+-          return t
+-        }
+-      }
+-      return 0
+-  }
+-}
+-
+-},{}],108:[function(require,module,exports){
+-"use strict"
+-
+-var convexHull1d = require('./lib/ch1d')
+-var convexHull2d = require('./lib/ch2d')
+-var convexHullnd = require('./lib/chnd')
+-
+-module.exports = convexHull
+-
+-function convexHull(points) {
+-  var n = points.length
+-  if(n === 0) {
+-    return []
+-  } else if(n === 1) {
+-    return [[0]]
+-  }
+-  var d = points[0].length
+-  if(d === 0) {
+-    return []
+-  } else if(d === 1) {
+-    return convexHull1d(points)
+-  } else if(d === 2) {
+-    return convexHull2d(points)
+-  }
+-  return convexHullnd(points, d)
+-}
+-},{"./lib/ch1d":109,"./lib/ch2d":110,"./lib/chnd":111}],109:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = convexHull1d
+-
+-function convexHull1d(points) {
+-  var lo = 0
+-  var hi = 0
+-  for(var i=1; i<points.length; ++i) {
+-    if(points[i][0] < points[lo][0]) {
+-      lo = i
+-    }
+-    if(points[i][0] > points[hi][0]) {
+-      hi = i
+-    }
+-  }
+-  if(lo < hi) {
+-    return [[lo], [hi]]
+-  } else if(lo > hi) {
+-    return [[hi], [lo]]
+-  } else {
+-    return [[lo]]
+-  }
+-}
+-},{}],110:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = convexHull2D
+-
+-var monotoneHull = require('monotone-convex-hull-2d')
+-
+-function convexHull2D(points) {
+-  var hull = monotoneHull(points)
+-  var h = hull.length
+-  if(h <= 2) {
+-    return []
+-  }
+-  var edges = new Array(h)
+-  var a = hull[h-1]
+-  for(var i=0; i<h; ++i) {
+-    var b = hull[i]
+-    edges[i] = [a,b]
+-    a = b
+-  }
+-  return edges
+-}
+-
+-},{"monotone-convex-hull-2d":113}],111:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = convexHullnD
+-
+-var ich = require('incremental-convex-hull')
+-var aff = require('affine-hull')
+-
+-function permute(points, front) {
+-  var n = points.length
+-  var npoints = new Array(n)
+-  for(var i=0; i<front.length; ++i) {
+-    npoints[i] = points[front[i]]
+-  }
+-  var ptr = front.length
+-  for(var i=0; i<n; ++i) {
+-    if(front.indexOf(i) < 0) {
+-      npoints[ptr++] = points[i]
+-    }
+-  }
+-  return npoints
+-}
+-
+-function invPermute(cells, front) {
+-  var nc = cells.length
+-  var nf = front.length
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      var x = c[j]
+-      if(x < nf) {
+-        c[j] = front[x]
+-      } else {
+-        x = x - nf
+-        for(var k=0; k<nf; ++k) {
+-          if(x >= front[k]) {
+-            x += 1
+-          }
+-        }
+-        c[j] = x
+-      }
+-    }
+-  }
+-  return cells
+-}
+-
+-function convexHullnD(points, d) {
+-  try {
+-    return ich(points, true)
+-  } catch(e) {
+-    //If point set is degenerate, try to find a basis and rerun it
+-    var ah = aff(points)
+-    if(ah.length <= d) {
+-      //No basis, no try
+-      return []
+-    }
+-    var npoints = permute(points, ah)
+-    var nhull   = ich(npoints, true)
+-    return invPermute(nhull, ah)
+-  }
+-}
+-},{"affine-hull":112,"incremental-convex-hull":241}],112:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = affineHull
+-
+-var orient = require('robust-orientation')
+-
+-function linearlyIndependent(points, d) {
+-  var nhull = new Array(d+1)
+-  for(var i=0; i<points.length; ++i) {
+-    nhull[i] = points[i]
+-  }
+-  for(var i=0; i<=points.length; ++i) {
+-    for(var j=points.length; j<=d; ++j) {
+-      var x = new Array(d)
+-      for(var k=0; k<d; ++k) {
+-        x[k] = Math.pow(j+1-i, k)
+-      }
+-      nhull[j] = x
+-    }
+-    var o = orient.apply(void 0, nhull)
+-    if(o) {
+-      return true
+-    }
+-  }
+-  return false
+-}
+-
+-function affineHull(points) {
+-  var n = points.length
+-  if(n === 0) {
+-    return []
+-  }
+-  if(n === 1) {
+-    return [0]
+-  }
+-  var d = points[0].length
+-  var frame = [ points[0] ]
+-  var index = [ 0 ]
+-  for(var i=1; i<n; ++i) {
+-    frame.push(points[i])
+-    if(!linearlyIndependent(frame, d)) {
+-      frame.pop()
+-      continue
+-    }
+-    index.push(i)
+-    if(index.length === d+1) {
+-      return index
+-    }
+-  }
+-  return index
+-}
+-},{"robust-orientation":439}],113:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = monotoneConvexHull2D
+-
+-var orient = require('robust-orientation')[3]
+-
+-function monotoneConvexHull2D(points) {
+-  var n = points.length
+-
+-  if(n < 3) {
+-    var result = new Array(n)
+-    for(var i=0; i<n; ++i) {
+-      result[i] = i
+-    }
+-
+-    if(n === 2 &&
+-       points[0][0] === points[1][0] &&
+-       points[0][1] === points[1][1]) {
+-      return [0]
+-    }
+-
+-    return result
+-  }
+-
+-  //Sort point indices along x-axis
+-  var sorted = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    sorted[i] = i
+-  }
+-  sorted.sort(function(a,b) {
+-    var d = points[a][0]-points[b][0]
+-    if(d) {
+-      return d
+-    }
+-    return points[a][1] - points[b][1]
+-  })
+-
+-  //Construct upper and lower hulls
+-  var lower = [sorted[0], sorted[1]]
+-  var upper = [sorted[0], sorted[1]]
+-
+-  for(var i=2; i<n; ++i) {
+-    var idx = sorted[i]
+-    var p   = points[idx]
+-
+-    //Insert into lower list
+-    var m = lower.length
+-    while(m > 1 && orient(
+-        points[lower[m-2]], 
+-        points[lower[m-1]], 
+-        p) <= 0) {
+-      m -= 1
+-      lower.pop()
+-    }
+-    lower.push(idx)
+-
+-    //Insert into upper list
+-    m = upper.length
+-    while(m > 1 && orient(
+-        points[upper[m-2]], 
+-        points[upper[m-1]], 
+-        p) >= 0) {
+-      m -= 1
+-      upper.pop()
+-    }
+-    upper.push(idx)
+-  }
+-
+-  //Merge lists together
+-  var result = new Array(upper.length + lower.length - 2)
+-  var ptr    = 0
+-  for(var i=0, nl=lower.length; i<nl; ++i) {
+-    result[ptr++] = lower[i]
+-  }
+-  for(var j=upper.length-2; j>0; --j) {
+-    result[ptr++] = upper[j]
+-  }
+-
+-  //Return result
+-  return result
+-}
+-},{"robust-orientation":439}],114:[function(require,module,exports){
+-module.exports = {
+-  AFG: "afghan",
+-  ALA: "\\b\\wland",
+-  ALB: "albania",
+-  DZA: "algeria",
+-  ASM: "^(?=.*americ).*samoa",
+-  AND: "andorra",
+-  AGO: "angola",
+-  AIA: "anguill?a",
+-  ATA: "antarctica",
+-  ATG: "antigua",
+-  ARG: "argentin",
+-  ARM: "armenia",
+-  ABW: "^(?!.*bonaire).*\\baruba",
+-  AUS: "australia",
+-  AUT: "^(?!.*hungary).*austria|\\baustri.*\\bemp",
+-  AZE: "azerbaijan",
+-  BHS: "bahamas",
+-  BHR: "bahrain",
+-  BGD: "bangladesh|^(?=.*east).*paki?stan",
+-  BRB: "barbados",
+-  BLR: "belarus|byelo",
+-  BEL: "^(?!.*luxem).*belgium",
+-  BLZ: "belize|^(?=.*british).*honduras",
+-  BEN: "benin|dahome",
+-  BMU: "bermuda",
+-  BTN: "bhutan",
+-  BOL: "bolivia",
+-  BES: "^(?=.*bonaire).*eustatius|^(?=.*carib).*netherlands|\\bbes.?islands",
+-  BIH: "herzegovina|bosnia",
+-  BWA: "botswana|bechuana",
+-  BVT: "bouvet",
+-  BRA: "brazil",
+-  IOT: "british.?indian.?ocean",
+-  BRN: "brunei",
+-  BGR: "bulgaria",
+-  BFA: "burkina|\\bfaso|upper.?volta",
+-  BDI: "burundi",
+-  KHM: "cambodia|kampuchea|khmer",
+-  CMR: "cameroon",
+-  CAN: "canada",
+-  CPV: "verde",
+-  CYM: "cayman",
+-  CAF: "\\bcentral.african.republic",
+-  TCD: "\\bchad",
+-  CHL: "\\bchile",
+-  CHN: "^(?!.*\\bmac)(?!.*\\bhong)(?!.*\\btai).*china",
+-  CXR: "christmas",
+-  CCK: "\\bcocos|keeling",
+-  COL: "colombia",
+-  COM: "comoro",
+-  COD: "\\bdem.*congo|congo.*\\bdem|congo.*\\bdr|\\bdr.*congo|belgian.?congo|congo.?free.?state|kinshasa|zaire|l.opoldville|drc|droc|rdc",
+-  COG: "^(?!.*\\bdem)(?!.*\\bdr)(?!.*kinshasa)(?!.*zaire)(?!.*belg)(?!.*l.opoldville)(?!.*free).*\\bcongo",
+-  COK: "\\bcook",
+-  CRI: "costa.?rica",
+-  CIV: "ivoire|ivory",
+-  HRV: "croatia",
+-  CUB: "\\bcuba",
+-  CUW: "^(?!.*bonaire).*\\bcura(c|ç)ao",
+-  CYP: "cyprus",
+-  CZE: "^(?=.*rep).*czech|czechia|bohemia",
+-  CSK: "czechoslovakia",
+-  DNK: "denmark",
+-  DJI: "djibouti",
+-  DMA: "dominica(?!n)",
+-  DOM: "dominican.rep",
+-  ECU: "ecuador",
+-  EGY: "egypt",
+-  SLV: "el.?salvador",
+-  GNQ: "guine.*eq|eq.*guine|^(?=.*span).*guinea",
+-  ERI: "eritrea",
+-  EST: "estonia",
+-  ETH: "ethiopia|abyssinia",
+-  FLK: "falkland|malvinas",
+-  FRO: "faroe|faeroe",
+-  FJI: "fiji",
+-  FIN: "finland",
+-  FRA: "^(?!.*\\bdep)(?!.*martinique).*france|french.?republic|\\bgaul",
+-  GUF: "^(?=.*french).*guiana",
+-  PYF: "french.?polynesia|tahiti",
+-  ATF: "french.?southern",
+-  GAB: "gabon",
+-  GMB: "gambia",
+-  GEO: "^(?!.*south).*georgia",
+-  DDR: "german.?democratic.?republic|democratic.?republic.*germany|east.germany",
+-  DEU: "^(?!.*east).*germany|^(?=.*\\bfed.*\\brep).*german",
+-  GHA: "ghana|gold.?coast",
+-  GIB: "gibraltar",
+-  GRC: "greece|hellenic|hellas",
+-  GRL: "greenland",
+-  GRD: "grenada",
+-  GLP: "guadeloupe",
+-  GUM: "\\bguam",
+-  GTM: "guatemala",
+-  GGY: "guernsey",
+-  GIN: "^(?!.*eq)(?!.*span)(?!.*bissau)(?!.*portu)(?!.*new).*guinea",
+-  GNB: "bissau|^(?=.*portu).*guinea",
+-  GUY: "guyana|british.?guiana",
+-  HTI: "haiti",
+-  HMD: "heard.*mcdonald",
+-  VAT: "holy.?see|vatican|papal.?st",
+-  HND: "^(?!.*brit).*honduras",
+-  HKG: "hong.?kong",
+-  HUN: "^(?!.*austr).*hungary",
+-  ISL: "iceland",
+-  IND: "india(?!.*ocea)",
+-  IDN: "indonesia",
+-  IRN: "\\biran|persia",
+-  IRQ: "\\biraq|mesopotamia",
+-  IRL: "ireland",
+-  IMN: "^(?=.*isle).*\\bman",
+-  ISR: "israel",
+-  ITA: "italy",
+-  JAM: "jamaica",
+-  JPN: "japan",
+-  JEY: "jersey",
+-  JOR: "jordan",
+-  KAZ: "kazak",
+-  KEN: "kenya|british.?east.?africa|east.?africa.?prot",
+-  KIR: "kiribati",
+-  PRK: "^(?=.*democrat).*\\bkorea|^(?=.*people).*\\bkorea|^(?=.*north).*\\bkorea|dprk",
+-  KOR: "^(?!.*democrat)(?!.*people)(?!.*north).*\\bkorea",
+-  KWT: "kuwait",
+-  KGZ: "kyrgyz|kirghiz",
+-  LAO: "\\blaos?\\b",
+-  LVA: "latvia",
+-  LBN: "lebanon",
+-  LSO: "lesotho|basuto",
+-  LBR: "liberia",
+-  LBY: "libya",
+-  LIE: "liechtenstein",
+-  LTU: "lithuania",
+-  LUX: "^(?!.*belg).*luxem",
+-  MAC: "maca(o|u)",
+-  MKD: "macedonia|fyrom",
+-  MDG: "madagascar|malagasy",
+-  MWI: "malawi|nyasa",
+-  MYS: "malaysia",
+-  MDV: "maldive",
+-  MLI: "\\bmali\\b",
+-  MLT: "\\bmalta",
+-  MHL: "marshall",
+-  MTQ: "martinique",
+-  MRT: "mauritania",
+-  MUS: "mauritius",
+-  MYT: "\\bmayotte",
+-  MEX: "\\bmexic",
+-  FSM: "micronesia",
+-  MDA: "moldov|b(a|e)ssarabia",
+-  MCO: "monaco",
+-  MNG: "mongolia",
+-  MNE: "^(?!.*serbia).*montenegro",
+-  MSR: "montserrat",
+-  MAR: "morocco|\\bmaroc",
+-  MOZ: "mozambique",
+-  MMR: "myanmar|burma",
+-  NAM: "namibia",
+-  NRU: "nauru",
+-  NPL: "nepal",
+-  NLD: "^(?!.*\\bant)(?!.*\\bcarib).*netherlands",
+-  ANT: "^(?=.*\\bant).*(nether|dutch)",
+-  NCL: "new.?caledonia",
+-  NZL: "new.?zealand",
+-  NIC: "nicaragua",
+-  NER: "\\bniger(?!ia)",
+-  NGA: "nigeria",
+-  NIU: "niue",
+-  NFK: "norfolk",
+-  MNP: "mariana",
+-  NOR: "norway",
+-  OMN: "\\boman|trucial",
+-  PAK: "^(?!.*east).*paki?stan",
+-  PLW: "palau",
+-  PSE: "palestin|\\bgaza|west.?bank",
+-  PAN: "panama",
+-  PNG: "papua|new.?guinea",
+-  PRY: "paraguay",
+-  PER: "peru",
+-  PHL: "philippines",
+-  PCN: "pitcairn",
+-  POL: "poland",
+-  PRT: "portugal",
+-  PRI: "puerto.?rico",
+-  QAT: "qatar",
+-  REU: "r(e|é)union",
+-  ROU: "r(o|u|ou)mania",
+-  RUS: "\\brussia|soviet.?union|u\\.?s\\.?s\\.?r|socialist.?republics",
+-  RWA: "rwanda",
+-  BLM: "barth(e|é)lemy",
+-  SHN: "helena",
+-  KNA: "kitts|\\bnevis",
+-  LCA: "\\blucia",
+-  MAF: "^(?=.*collectivity).*martin|^(?=.*france).*martin(?!ique)|^(?=.*french).*martin(?!ique)",
+-  SPM: "miquelon",
+-  VCT: "vincent",
+-  WSM: "^(?!.*amer).*samoa",
+-  SMR: "san.?marino",
+-  STP: "\\bs(a|ã)o.?tom(e|é)",
+-  SAU: "\\bsa\\w*.?arabia",
+-  SEN: "senegal",
+-  SRB: "^(?!.*monte).*serbia",
+-  SYC: "seychell",
+-  SLE: "sierra",
+-  SGP: "singapore",
+-  SXM: "^(?!.*martin)(?!.*saba).*maarten",
+-  SVK: "^(?!.*cze).*slovak",
+-  SVN: "slovenia",
+-  SLB: "solomon",
+-  SOM: "somali",
+-  ZAF: "\\bs\\w*.?africa",
+-  SGS: "south.?georgia|sandwich",
+-  SSD: "\\bs\\w*.?sudan",
+-  ESP: "spain",
+-  LKA: "sri.?lanka|ceylon",
+-  SDN: "^(?!.*\\bs(?!u)).*sudan",
+-  SUR: "surinam|dutch.?guiana",
+-  SJM: "svalbard",
+-  SWZ: "swaziland",
+-  SWE: "sweden",
+-  CHE: "switz|swiss",
+-  SYR: "syria",
+-  TWN: "taiwan|taipei|formosa",
+-  TJK: "tajik",
+-  TZA: "tanzania",
+-  THA: "thailand|\\bsiam",
+-  TLS: "^(?=.*leste).*timor|^(?=.*east).*timor",
+-  TGO: "togo",
+-  TKL: "tokelau",
+-  TON: "tonga",
+-  TTO: "trinidad|tobago",
+-  TUN: "tunisia",
+-  TUR: "turkey",
+-  TKM: "turkmen",
+-  TCA: "turks",
+-  TUV: "tuvalu",
+-  UGA: "uganda",
+-  UKR: "ukrain",
+-  ARE: "emirates|^u\\.?a\\.?e\\.?$|united.?arab.?em",
+-  GBR: "united.?kingdom|britain|^u\\.?k\\.?$",
+-  USA: "united.?states|\\bu\\.?s\\.?a\\.?\\b|\\bu\\.?s\\.?\\b(?!.*islands)",
+-  UMI: "minor.?outlying.?is",
+-  URY: "uruguay",
+-  UZB: "uzbek",
+-  VUT: "vanuatu|new.?hebrides",
+-  VEN: "venezuela",
+-  VNM: "^(?!.*republic).*viet.?nam|^(?=.*socialist).*viet.?nam",
+-  VGB: "^(?=.*\\bu\\.?\\s?k).*virgin|^(?=.*brit).*virgin|^(?=.*kingdom).*virgin",
+-  VIR: "^(?=.*\\bu\\.?\\s?s).*virgin|^(?=.*states).*virgin",
+-  WLF: "futuna|wallis",
+-  ESH: "western.sahara",
+-  YEM: "^(?!.*arab)(?!.*north)(?!.*sana)(?!.*peo)(?!.*dem)(?!.*south)(?!.*aden)(?!.*\\bp\\.?d\\.?r).*yemen",
+-  YMD: "^(?=.*peo).*yemen|^(?!.*rep)(?=.*dem).*yemen|^(?=.*south).*yemen|^(?=.*aden).*yemen|^(?=.*\\bp\\.?d\\.?r).*yemen",
+-  YUG: "yugoslavia",
+-  ZMB: "zambia|northern.?rhodesia",
+-  EAZ: "zanzibar",
+-  ZWE: "zimbabwe|^(?!.*northern).*rhodesia"
+-};
+-
+-},{}],115:[function(require,module,exports){
+-"use strict"
+-
+-var createThunk = require("./lib/thunk.js")
+-
+-function Procedure() {
+-  this.argTypes = []
+-  this.shimArgs = []
+-  this.arrayArgs = []
+-  this.arrayBlockIndices = []
+-  this.scalarArgs = []
+-  this.offsetArgs = []
+-  this.offsetArgIndex = []
+-  this.indexArgs = []
+-  this.shapeArgs = []
+-  this.funcName = ""
+-  this.pre = null
+-  this.body = null
+-  this.post = null
+-  this.debug = false
+-}
+-
+-function compileCwise(user_args) {
+-  //Create procedure
+-  var proc = new Procedure()
+-  
+-  //Parse blocks
+-  proc.pre    = user_args.pre
+-  proc.body   = user_args.body
+-  proc.post   = user_args.post
+-
+-  //Parse arguments
+-  var proc_args = user_args.args.slice(0)
+-  proc.argTypes = proc_args
+-  for(var i=0; i<proc_args.length; ++i) {
+-    var arg_type = proc_args[i]
+-    if(arg_type === "array" || (typeof arg_type === "object" && arg_type.blockIndices)) {
+-      proc.argTypes[i] = "array"
+-      proc.arrayArgs.push(i)
+-      proc.arrayBlockIndices.push(arg_type.blockIndices ? arg_type.blockIndices : 0)
+-      proc.shimArgs.push("array" + i)
+-      if(i < proc.pre.args.length && proc.pre.args[i].count>0) {
+-        throw new Error("cwise: pre() block may not reference array args")
+-      }
+-      if(i < proc.post.args.length && proc.post.args[i].count>0) {
+-        throw new Error("cwise: post() block may not reference array args")
+-      }
+-    } else if(arg_type === "scalar") {
+-      proc.scalarArgs.push(i)
+-      proc.shimArgs.push("scalar" + i)
+-    } else if(arg_type === "index") {
+-      proc.indexArgs.push(i)
+-      if(i < proc.pre.args.length && proc.pre.args[i].count > 0) {
+-        throw new Error("cwise: pre() block may not reference array index")
+-      }
+-      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
+-        throw new Error("cwise: body() block may not write to array index")
+-      }
+-      if(i < proc.post.args.length && proc.post.args[i].count > 0) {
+-        throw new Error("cwise: post() block may not reference array index")
+-      }
+-    } else if(arg_type === "shape") {
+-      proc.shapeArgs.push(i)
+-      if(i < proc.pre.args.length && proc.pre.args[i].lvalue) {
+-        throw new Error("cwise: pre() block may not write to array shape")
+-      }
+-      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
+-        throw new Error("cwise: body() block may not write to array shape")
+-      }
+-      if(i < proc.post.args.length && proc.post.args[i].lvalue) {
+-        throw new Error("cwise: post() block may not write to array shape")
+-      }
+-    } else if(typeof arg_type === "object" && arg_type.offset) {
+-      proc.argTypes[i] = "offset"
+-      proc.offsetArgs.push({ array: arg_type.array, offset:arg_type.offset })
+-      proc.offsetArgIndex.push(i)
+-    } else {
+-      throw new Error("cwise: Unknown argument type " + proc_args[i])
+-    }
+-  }
+-  
+-  //Make sure at least one array argument was specified
+-  if(proc.arrayArgs.length <= 0) {
+-    throw new Error("cwise: No array arguments specified")
+-  }
+-  
+-  //Make sure arguments are correct
+-  if(proc.pre.args.length > proc_args.length) {
+-    throw new Error("cwise: Too many arguments in pre() block")
+-  }
+-  if(proc.body.args.length > proc_args.length) {
+-    throw new Error("cwise: Too many arguments in body() block")
+-  }
+-  if(proc.post.args.length > proc_args.length) {
+-    throw new Error("cwise: Too many arguments in post() block")
+-  }
+-
+-  //Check debug flag
+-  proc.debug = !!user_args.printCode || !!user_args.debug
+-  
+-  //Retrieve name
+-  proc.funcName = user_args.funcName || "cwise"
+-  
+-  //Read in block size
+-  proc.blockSize = user_args.blockSize || 64
+-
+-  return createThunk(proc)
+-}
+-
+-module.exports = compileCwise
+-
+-},{"./lib/thunk.js":117}],116:[function(require,module,exports){
++},{"./lib/thunk.js":88}],87:[function(require,module,exports){
+ "use strict"
+ 
+ var uniq = require("uniq")
+@@ -13703,7 +10822,7 @@ function generateCWiseOp(proc, typesig) {
+ }
+ module.exports = generateCWiseOp
+ 
+-},{"uniq":459}],117:[function(require,module,exports){
++},{"uniq":451}],88:[function(require,module,exports){
+ "use strict"
+ 
+ // The function below is called when constructing a cwise function object, and does the following:
+@@ -13791,12 +10910,12 @@ function createThunk(proc) {
+ 
+ module.exports = createThunk
+ 
+-},{"./compile.js":116}],118:[function(require,module,exports){
++},{"./compile.js":87}],89:[function(require,module,exports){
+ module.exports = require("cwise-compiler")
+-},{"cwise-compiler":115}],119:[function(require,module,exports){
++},{"cwise-compiler":86}],90:[function(require,module,exports){
+ !function() {
+   var d3 = {
+-    version: "3.5.16"
++    version: "3.5.17"
+   };
+   var d3_arraySlice = [].slice, d3_array = function(list) {
+     return d3_arraySlice.call(list);
+@@ -17321,7 +14440,7 @@ module.exports = require("cwise-compiler")
+         λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
+       }
+     }
+-    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
++    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
+   }
+   function d3_geo_clipCircle(radius) {
+     var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
+@@ -23348,7 +20467,7 @@ module.exports = require("cwise-compiler")
+   });
+   if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
+ }();
+-},{}],120:[function(require,module,exports){
++},{}],91:[function(require,module,exports){
+ "use strict"
+ 
+ var ch = require("incremental-convex-hull")
+@@ -23508,7 +20627,111 @@ function triangulate(points, includePointAtInfinity) {
+ 
+   return hull
+ }
+-},{"incremental-convex-hull":241,"uniq":459}],121:[function(require,module,exports){
++},{"incremental-convex-hull":224,"uniq":451}],92:[function(require,module,exports){
++(function (Buffer){
++var hasTypedArrays = false
++if(typeof Float64Array !== "undefined") {
++  var DOUBLE_VIEW = new Float64Array(1)
++    , UINT_VIEW   = new Uint32Array(DOUBLE_VIEW.buffer)
++  DOUBLE_VIEW[0] = 1.0
++  hasTypedArrays = true
++  if(UINT_VIEW[1] === 0x3ff00000) {
++    //Use little endian
++    module.exports = function doubleBitsLE(n) {
++      DOUBLE_VIEW[0] = n
++      return [ UINT_VIEW[0], UINT_VIEW[1] ]
++    }
++    function toDoubleLE(lo, hi) {
++      UINT_VIEW[0] = lo
++      UINT_VIEW[1] = hi
++      return DOUBLE_VIEW[0]
++    }
++    module.exports.pack = toDoubleLE
++    function lowUintLE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[0]
++    }
++    module.exports.lo = lowUintLE
++    function highUintLE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[1]
++    }
++    module.exports.hi = highUintLE
++  } else if(UINT_VIEW[0] === 0x3ff00000) {
++    //Use big endian
++    module.exports = function doubleBitsBE(n) {
++      DOUBLE_VIEW[0] = n
++      return [ UINT_VIEW[1], UINT_VIEW[0] ]
++    }
++    function toDoubleBE(lo, hi) {
++      UINT_VIEW[1] = lo
++      UINT_VIEW[0] = hi
++      return DOUBLE_VIEW[0]
++    }
++    module.exports.pack = toDoubleBE
++    function lowUintBE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[1]
++    }
++    module.exports.lo = lowUintBE
++    function highUintBE(n) {
++      DOUBLE_VIEW[0] = n
++      return UINT_VIEW[0]
++    }
++    module.exports.hi = highUintBE
++  } else {
++    hasTypedArrays = false
++  }
++}
++if(!hasTypedArrays) {
++  var buffer = new Buffer(8)
++  module.exports = function doubleBits(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return [ buffer.readUInt32LE(0, true), buffer.readUInt32LE(4, true) ]
++  }
++  function toDouble(lo, hi) {
++    buffer.writeUInt32LE(lo, 0, true)
++    buffer.writeUInt32LE(hi, 4, true)
++    return buffer.readDoubleLE(0, true)
++  }
++  module.exports.pack = toDouble  
++  function lowUint(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return buffer.readUInt32LE(0, true)
++  }
++  module.exports.lo = lowUint
++  function highUint(n) {
++    buffer.writeDoubleLE(n, 0, true)
++    return buffer.readUInt32LE(4, true)
++  }
++  module.exports.hi = highUint
++}
++
++module.exports.sign = function(n) {
++  return module.exports.hi(n) >>> 31
++}
++
++module.exports.exponent = function(n) {
++  var b = module.exports.hi(n)
++  return ((b<<1) >>> 21) - 1023
++}
++
++module.exports.fraction = function(n) {
++  var lo = module.exports.lo(n)
++  var hi = module.exports.hi(n)
++  var b = hi & ((1<<20) - 1)
++  if(hi & 0x7ff00000) {
++    b += (1<<20)
++  }
++  return [lo, b]
++}
++
++module.exports.denormalized = function(n) {
++  var hi = module.exports.hi(n)
++  return !(hi & 0x7ff00000)
++}
++}).call(this,require("buffer").Buffer)
++},{"buffer":59}],93:[function(require,module,exports){
+ "use strict"
+ 
+ function dupe_array(count, value, i) {
+@@ -23558,965 +20781,1519 @@ function dupe(count, value) {
+ }
+ 
+ module.exports = dupe
+-},{}],122:[function(require,module,exports){
++},{}],94:[function(require,module,exports){
++"use strict"
++
++module.exports = edgeToAdjacency
++
++var uniq = require("uniq")
++
++function edgeToAdjacency(edges, numVertices) {
++  var numEdges = edges.length
++  if(typeof numVertices !== "number") {
++    numVertices = 0
++    for(var i=0; i<numEdges; ++i) {
++      var e = edges[i]
++      numVertices = Math.max(numVertices, e[0], e[1])
++    }
++    numVertices = (numVertices|0) + 1
++  }
++  numVertices = numVertices|0
++  var adj = new Array(numVertices)
++  for(var i=0; i<numVertices; ++i) {
++    adj[i] = []
++  }
++  for(var i=0; i<numEdges; ++i) {
++    var e = edges[i]
++    adj[e[0]].push(e[1])
++    adj[e[1]].push(e[0])
++  }
++  for(var j=0; j<numVertices; ++j) {
++    uniq(adj[j], function(a, b) {
++      return a - b
++    })
++  }
++  return adj
++}
++},{"uniq":451}],95:[function(require,module,exports){
+ (function (process,global){
+ /*!
+  * @overview es6-promise - a tiny implementation of Promises/A+.
+  * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
+  * @license   Licensed under MIT license
+- *            See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
+- * @version   3.1.2
++ *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
++ * @version   3.3.1
+  */
+ 
+-(function() {
+-    "use strict";
+-    function lib$es6$promise$utils$$objectOrFunction(x) {
+-      return typeof x === 'function' || (typeof x === 'object' && x !== null);
+-    }
++(function (global, factory) {
++    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
++    typeof define === 'function' && define.amd ? define(factory) :
++    (global.ES6Promise = factory());
++}(this, (function () { 'use strict';
+ 
+-    function lib$es6$promise$utils$$isFunction(x) {
+-      return typeof x === 'function';
+-    }
++function objectOrFunction(x) {
++  return typeof x === 'function' || typeof x === 'object' && x !== null;
++}
+ 
+-    function lib$es6$promise$utils$$isMaybeThenable(x) {
+-      return typeof x === 'object' && x !== null;
+-    }
++function isFunction(x) {
++  return typeof x === 'function';
++}
+ 
+-    var lib$es6$promise$utils$$_isArray;
+-    if (!Array.isArray) {
+-      lib$es6$promise$utils$$_isArray = function (x) {
+-        return Object.prototype.toString.call(x) === '[object Array]';
+-      };
++var _isArray = undefined;
++if (!Array.isArray) {
++  _isArray = function (x) {
++    return Object.prototype.toString.call(x) === '[object Array]';
++  };
++} else {
++  _isArray = Array.isArray;
++}
++
++var isArray = _isArray;
++
++var len = 0;
++var vertxNext = undefined;
++var customSchedulerFn = undefined;
++
++var asap = function asap(callback, arg) {
++  queue[len] = callback;
++  queue[len + 1] = arg;
++  len += 2;
++  if (len === 2) {
++    // If len is 2, that means that we need to schedule an async flush.
++    // If additional callbacks are queued before the queue is flushed, they
++    // will be processed by this flush that we are scheduling.
++    if (customSchedulerFn) {
++      customSchedulerFn(flush);
+     } else {
+-      lib$es6$promise$utils$$_isArray = Array.isArray;
+-    }
+-
+-    var lib$es6$promise$utils$$isArray = lib$es6$promise$utils$$_isArray;
+-    var lib$es6$promise$asap$$len = 0;
+-    var lib$es6$promise$asap$$vertxNext;
+-    var lib$es6$promise$asap$$customSchedulerFn;
+-
+-    var lib$es6$promise$asap$$asap = function asap(callback, arg) {
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len] = callback;
+-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len + 1] = arg;
+-      lib$es6$promise$asap$$len += 2;
+-      if (lib$es6$promise$asap$$len === 2) {
+-        // If len is 2, that means that we need to schedule an async flush.
+-        // If additional callbacks are queued before the queue is flushed, they
+-        // will be processed by this flush that we are scheduling.
+-        if (lib$es6$promise$asap$$customSchedulerFn) {
+-          lib$es6$promise$asap$$customSchedulerFn(lib$es6$promise$asap$$flush);
+-        } else {
+-          lib$es6$promise$asap$$scheduleFlush();
+-        }
+-      }
++      scheduleFlush();
+     }
++  }
++};
+ 
+-    function lib$es6$promise$asap$$setScheduler(scheduleFn) {
+-      lib$es6$promise$asap$$customSchedulerFn = scheduleFn;
+-    }
++function setScheduler(scheduleFn) {
++  customSchedulerFn = scheduleFn;
++}
+ 
+-    function lib$es6$promise$asap$$setAsap(asapFn) {
+-      lib$es6$promise$asap$$asap = asapFn;
+-    }
++function setAsap(asapFn) {
++  asap = asapFn;
++}
+ 
+-    var lib$es6$promise$asap$$browserWindow = (typeof window !== 'undefined') ? window : undefined;
+-    var lib$es6$promise$asap$$browserGlobal = lib$es6$promise$asap$$browserWindow || {};
+-    var lib$es6$promise$asap$$BrowserMutationObserver = lib$es6$promise$asap$$browserGlobal.MutationObserver || lib$es6$promise$asap$$browserGlobal.WebKitMutationObserver;
+-    var lib$es6$promise$asap$$isNode = typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';
++var browserWindow = typeof window !== 'undefined' ? window : undefined;
++var browserGlobal = browserWindow || {};
++var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
++var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]';
+ 
+-    // test for web worker but not in IE10
+-    var lib$es6$promise$asap$$isWorker = typeof Uint8ClampedArray !== 'undefined' &&
+-      typeof importScripts !== 'undefined' &&
+-      typeof MessageChannel !== 'undefined';
++// test for web worker but not in IE10
++var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined';
+ 
+-    // node
+-    function lib$es6$promise$asap$$useNextTick() {
+-      // node version 0.10.x displays a deprecation warning when nextTick is used recursively
+-      // see https://github.com/cujojs/when/issues/410 for details
+-      return function() {
+-        process.nextTick(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// node
++function useNextTick() {
++  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
++  // see https://github.com/cujojs/when/issues/410 for details
++  return function () {
++    return process.nextTick(flush);
++  };
++}
+ 
+-    // vertx
+-    function lib$es6$promise$asap$$useVertxTimer() {
+-      return function() {
+-        lib$es6$promise$asap$$vertxNext(lib$es6$promise$asap$$flush);
+-      };
+-    }
++// vertx
++function useVertxTimer() {
++  return function () {
++    vertxNext(flush);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useMutationObserver() {
+-      var iterations = 0;
+-      var observer = new lib$es6$promise$asap$$BrowserMutationObserver(lib$es6$promise$asap$$flush);
+-      var node = document.createTextNode('');
+-      observer.observe(node, { characterData: true });
++function useMutationObserver() {
++  var iterations = 0;
++  var observer = new BrowserMutationObserver(flush);
++  var node = document.createTextNode('');
++  observer.observe(node, { characterData: true });
+ 
+-      return function() {
+-        node.data = (iterations = ++iterations % 2);
+-      };
+-    }
++  return function () {
++    node.data = iterations = ++iterations % 2;
++  };
++}
+ 
+-    // web worker
+-    function lib$es6$promise$asap$$useMessageChannel() {
+-      var channel = new MessageChannel();
+-      channel.port1.onmessage = lib$es6$promise$asap$$flush;
+-      return function () {
+-        channel.port2.postMessage(0);
+-      };
+-    }
++// web worker
++function useMessageChannel() {
++  var channel = new MessageChannel();
++  channel.port1.onmessage = flush;
++  return function () {
++    return channel.port2.postMessage(0);
++  };
++}
+ 
+-    function lib$es6$promise$asap$$useSetTimeout() {
+-      return function() {
+-        setTimeout(lib$es6$promise$asap$$flush, 1);
+-      };
+-    }
++function useSetTimeout() {
++  // Store setTimeout reference so es6-promise will be unaffected by
++  // other code modifying setTimeout (like sinon.useFakeTimers())
++  var globalSetTimeout = setTimeout;
++  return function () {
++    return globalSetTimeout(flush, 1);
++  };
++}
+ 
+-    var lib$es6$promise$asap$$queue = new Array(1000);
+-    function lib$es6$promise$asap$$flush() {
+-      for (var i = 0; i < lib$es6$promise$asap$$len; i+=2) {
+-        var callback = lib$es6$promise$asap$$queue[i];
+-        var arg = lib$es6$promise$asap$$queue[i+1];
++var queue = new Array(1000);
++function flush() {
++  for (var i = 0; i < len; i += 2) {
++    var callback = queue[i];
++    var arg = queue[i + 1];
+ 
+-        callback(arg);
++    callback(arg);
+ 
+-        lib$es6$promise$asap$$queue[i] = undefined;
+-        lib$es6$promise$asap$$queue[i+1] = undefined;
+-      }
++    queue[i] = undefined;
++    queue[i + 1] = undefined;
++  }
+ 
+-      lib$es6$promise$asap$$len = 0;
+-    }
++  len = 0;
++}
+ 
+-    function lib$es6$promise$asap$$attemptVertx() {
+-      try {
+-        var r = require;
+-        var vertx = r('vertx');
+-        lib$es6$promise$asap$$vertxNext = vertx.runOnLoop || vertx.runOnContext;
+-        return lib$es6$promise$asap$$useVertxTimer();
+-      } catch(e) {
+-        return lib$es6$promise$asap$$useSetTimeout();
+-      }
+-    }
+-
+-    var lib$es6$promise$asap$$scheduleFlush;
+-    // Decide what async method to use to triggering processing of queued callbacks:
+-    if (lib$es6$promise$asap$$isNode) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useNextTick();
+-    } else if (lib$es6$promise$asap$$BrowserMutationObserver) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMutationObserver();
+-    } else if (lib$es6$promise$asap$$isWorker) {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMessageChannel();
+-    } else if (lib$es6$promise$asap$$browserWindow === undefined && typeof require === 'function') {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$attemptVertx();
+-    } else {
+-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useSetTimeout();
+-    }
+-    function lib$es6$promise$then$$then(onFulfillment, onRejection) {
+-      var parent = this;
+-      var state = parent._state;
++function attemptVertx() {
++  try {
++    var r = require;
++    var vertx = r('vertx');
++    vertxNext = vertx.runOnLoop || vertx.runOnContext;
++    return useVertxTimer();
++  } catch (e) {
++    return useSetTimeout();
++  }
++}
+ 
+-      if (state === lib$es6$promise$$internal$$FULFILLED && !onFulfillment || state === lib$es6$promise$$internal$$REJECTED && !onRejection) {
+-        return this;
+-      }
++var scheduleFlush = undefined;
++// Decide what async method to use to triggering processing of queued callbacks:
++if (isNode) {
++  scheduleFlush = useNextTick();
++} else if (BrowserMutationObserver) {
++  scheduleFlush = useMutationObserver();
++} else if (isWorker) {
++  scheduleFlush = useMessageChannel();
++} else if (browserWindow === undefined && typeof require === 'function') {
++  scheduleFlush = attemptVertx();
++} else {
++  scheduleFlush = useSetTimeout();
++}
+ 
+-      var child = new this.constructor(lib$es6$promise$$internal$$noop);
+-      var result = parent._result;
++function then(onFulfillment, onRejection) {
++  var _arguments = arguments;
+ 
+-      if (state) {
+-        var callback = arguments[state - 1];
+-        lib$es6$promise$asap$$asap(function(){
+-          lib$es6$promise$$internal$$invokeCallback(state, child, callback, result);
+-        });
++  var parent = this;
++
++  var child = new this.constructor(noop);
++
++  if (child[PROMISE_ID] === undefined) {
++    makePromise(child);
++  }
++
++  var _state = parent._state;
++
++  if (_state) {
++    (function () {
++      var callback = _arguments[_state - 1];
++      asap(function () {
++        return invokeCallback(_state, child, callback, parent._result);
++      });
++    })();
++  } else {
++    subscribe(parent, child, onFulfillment, onRejection);
++  }
++
++  return child;
++}
++
++/**
++  `Promise.resolve` returns a promise that will become resolved with the
++  passed `value`. It is shorthand for the following:
++
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    resolve(1);
++  });
++
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
++
++  Instead of writing the above, your code now simply becomes the following:
++
++  ```javascript
++  let promise = Promise.resolve(1);
++
++  promise.then(function(value){
++    // value === 1
++  });
++  ```
++
++  @method resolve
++  @static
++  @param {Any} value value that the returned promise will be resolved with
++  Useful for tooling.
++  @return {Promise} a promise that will become fulfilled with the given
++  `value`
++*/
++function resolve(object) {
++  /*jshint validthis:true */
++  var Constructor = this;
++
++  if (object && typeof object === 'object' && object.constructor === Constructor) {
++    return object;
++  }
++
++  var promise = new Constructor(noop);
++  _resolve(promise, object);
++  return promise;
++}
++
++var PROMISE_ID = Math.random().toString(36).substring(16);
++
++function noop() {}
++
++var PENDING = void 0;
++var FULFILLED = 1;
++var REJECTED = 2;
++
++var GET_THEN_ERROR = new ErrorObject();
++
++function selfFulfillment() {
++  return new TypeError("You cannot resolve a promise with itself");
++}
++
++function cannotReturnOwn() {
++  return new TypeError('A promises callback cannot return that same promise.');
++}
++
++function getThen(promise) {
++  try {
++    return promise.then;
++  } catch (error) {
++    GET_THEN_ERROR.error = error;
++    return GET_THEN_ERROR;
++  }
++}
++
++function tryThen(then, value, fulfillmentHandler, rejectionHandler) {
++  try {
++    then.call(value, fulfillmentHandler, rejectionHandler);
++  } catch (e) {
++    return e;
++  }
++}
++
++function handleForeignThenable(promise, thenable, then) {
++  asap(function (promise) {
++    var sealed = false;
++    var error = tryThen(then, thenable, function (value) {
++      if (sealed) {
++        return;
++      }
++      sealed = true;
++      if (thenable !== value) {
++        _resolve(promise, value);
+       } else {
+-        lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection);
++        fulfill(promise, value);
++      }
++    }, function (reason) {
++      if (sealed) {
++        return;
+       }
++      sealed = true;
+ 
+-      return child;
++      _reject(promise, reason);
++    }, 'Settle: ' + (promise._label || ' unknown promise'));
++
++    if (!sealed && error) {
++      sealed = true;
++      _reject(promise, error);
+     }
+-    var lib$es6$promise$then$$default = lib$es6$promise$then$$then;
+-    function lib$es6$promise$promise$resolve$$resolve(object) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++  }, promise);
++}
+ 
+-      if (object && typeof object === 'object' && object.constructor === Constructor) {
+-        return object;
+-      }
++function handleOwnThenable(promise, thenable) {
++  if (thenable._state === FULFILLED) {
++    fulfill(promise, thenable._result);
++  } else if (thenable._state === REJECTED) {
++    _reject(promise, thenable._result);
++  } else {
++    subscribe(thenable, undefined, function (value) {
++      return _resolve(promise, value);
++    }, function (reason) {
++      return _reject(promise, reason);
++    });
++  }
++}
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$resolve(promise, object);
+-      return promise;
++function handleMaybeThenable(promise, maybeThenable, then$$) {
++  if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) {
++    handleOwnThenable(promise, maybeThenable);
++  } else {
++    if (then$$ === GET_THEN_ERROR) {
++      _reject(promise, GET_THEN_ERROR.error);
++    } else if (then$$ === undefined) {
++      fulfill(promise, maybeThenable);
++    } else if (isFunction(then$$)) {
++      handleForeignThenable(promise, maybeThenable, then$$);
++    } else {
++      fulfill(promise, maybeThenable);
+     }
+-    var lib$es6$promise$promise$resolve$$default = lib$es6$promise$promise$resolve$$resolve;
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$noop() {}
++function _resolve(promise, value) {
++  if (promise === value) {
++    _reject(promise, selfFulfillment());
++  } else if (objectOrFunction(value)) {
++    handleMaybeThenable(promise, value, getThen(value));
++  } else {
++    fulfill(promise, value);
++  }
++}
+ 
+-    var lib$es6$promise$$internal$$PENDING   = void 0;
+-    var lib$es6$promise$$internal$$FULFILLED = 1;
+-    var lib$es6$promise$$internal$$REJECTED  = 2;
++function publishRejection(promise) {
++  if (promise._onerror) {
++    promise._onerror(promise._result);
++  }
+ 
+-    var lib$es6$promise$$internal$$GET_THEN_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++  publish(promise);
++}
+ 
+-    function lib$es6$promise$$internal$$selfFulfillment() {
+-      return new TypeError("You cannot resolve a promise with itself");
+-    }
++function fulfill(promise, value) {
++  if (promise._state !== PENDING) {
++    return;
++  }
+ 
+-    function lib$es6$promise$$internal$$cannotReturnOwn() {
+-      return new TypeError('A promises callback cannot return that same promise.');
+-    }
++  promise._result = value;
++  promise._state = FULFILLED;
+ 
+-    function lib$es6$promise$$internal$$getThen(promise) {
+-      try {
+-        return promise.then;
+-      } catch(error) {
+-        lib$es6$promise$$internal$$GET_THEN_ERROR.error = error;
+-        return lib$es6$promise$$internal$$GET_THEN_ERROR;
+-      }
+-    }
++  if (promise._subscribers.length !== 0) {
++    asap(publish, promise);
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$tryThen(then, value, fulfillmentHandler, rejectionHandler) {
+-      try {
+-        then.call(value, fulfillmentHandler, rejectionHandler);
+-      } catch(e) {
+-        return e;
+-      }
++function _reject(promise, reason) {
++  if (promise._state !== PENDING) {
++    return;
++  }
++  promise._state = REJECTED;
++  promise._result = reason;
++
++  asap(publishRejection, promise);
++}
++
++function subscribe(parent, child, onFulfillment, onRejection) {
++  var _subscribers = parent._subscribers;
++  var length = _subscribers.length;
++
++  parent._onerror = null;
++
++  _subscribers[length] = child;
++  _subscribers[length + FULFILLED] = onFulfillment;
++  _subscribers[length + REJECTED] = onRejection;
++
++  if (length === 0 && parent._state) {
++    asap(publish, parent);
++  }
++}
++
++function publish(promise) {
++  var subscribers = promise._subscribers;
++  var settled = promise._state;
++
++  if (subscribers.length === 0) {
++    return;
++  }
++
++  var child = undefined,
++      callback = undefined,
++      detail = promise._result;
++
++  for (var i = 0; i < subscribers.length; i += 3) {
++    child = subscribers[i];
++    callback = subscribers[i + settled];
++
++    if (child) {
++      invokeCallback(settled, child, callback, detail);
++    } else {
++      callback(detail);
+     }
++  }
+ 
+-    function lib$es6$promise$$internal$$handleForeignThenable(promise, thenable, then) {
+-       lib$es6$promise$asap$$asap(function(promise) {
+-        var sealed = false;
+-        var error = lib$es6$promise$$internal$$tryThen(then, thenable, function(value) {
+-          if (sealed) { return; }
+-          sealed = true;
+-          if (thenable !== value) {
+-            lib$es6$promise$$internal$$resolve(promise, value);
+-          } else {
+-            lib$es6$promise$$internal$$fulfill(promise, value);
+-          }
+-        }, function(reason) {
+-          if (sealed) { return; }
+-          sealed = true;
++  promise._subscribers.length = 0;
++}
++
++function ErrorObject() {
++  this.error = null;
++}
+ 
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        }, 'Settle: ' + (promise._label || ' unknown promise'));
++var TRY_CATCH_ERROR = new ErrorObject();
+ 
+-        if (!sealed && error) {
+-          sealed = true;
+-          lib$es6$promise$$internal$$reject(promise, error);
+-        }
+-      }, promise);
++function tryCatch(callback, detail) {
++  try {
++    return callback(detail);
++  } catch (e) {
++    TRY_CATCH_ERROR.error = e;
++    return TRY_CATCH_ERROR;
++  }
++}
++
++function invokeCallback(settled, promise, callback, detail) {
++  var hasCallback = isFunction(callback),
++      value = undefined,
++      error = undefined,
++      succeeded = undefined,
++      failed = undefined;
++
++  if (hasCallback) {
++    value = tryCatch(callback, detail);
++
++    if (value === TRY_CATCH_ERROR) {
++      failed = true;
++      error = value.error;
++      value = null;
++    } else {
++      succeeded = true;
+     }
+ 
+-    function lib$es6$promise$$internal$$handleOwnThenable(promise, thenable) {
+-      if (thenable._state === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, thenable._result);
+-      } else if (thenable._state === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, thenable._result);
+-      } else {
+-        lib$es6$promise$$internal$$subscribe(thenable, undefined, function(value) {
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      }
++    if (promise === value) {
++      _reject(promise, cannotReturnOwn());
++      return;
+     }
++  } else {
++    value = detail;
++    succeeded = true;
++  }
+ 
+-    function lib$es6$promise$$internal$$handleMaybeThenable(promise, maybeThenable, then) {
+-      if (maybeThenable.constructor === promise.constructor &&
+-          then === lib$es6$promise$then$$default &&
+-          constructor.resolve === lib$es6$promise$promise$resolve$$default) {
+-        lib$es6$promise$$internal$$handleOwnThenable(promise, maybeThenable);
+-      } else {
+-        if (then === lib$es6$promise$$internal$$GET_THEN_ERROR) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$GET_THEN_ERROR.error);
+-        } else if (then === undefined) {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        } else if (lib$es6$promise$utils$$isFunction(then)) {
+-          lib$es6$promise$$internal$$handleForeignThenable(promise, maybeThenable, then);
+-        } else {
+-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
+-        }
+-      }
++  if (promise._state !== PENDING) {
++    // noop
++  } else if (hasCallback && succeeded) {
++      _resolve(promise, value);
++    } else if (failed) {
++      _reject(promise, error);
++    } else if (settled === FULFILLED) {
++      fulfill(promise, value);
++    } else if (settled === REJECTED) {
++      _reject(promise, value);
+     }
++}
+ 
+-    function lib$es6$promise$$internal$$resolve(promise, value) {
+-      if (promise === value) {
+-        lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$selfFulfillment());
+-      } else if (lib$es6$promise$utils$$objectOrFunction(value)) {
+-        lib$es6$promise$$internal$$handleMaybeThenable(promise, value, lib$es6$promise$$internal$$getThen(value));
+-      } else {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
++function initializePromise(promise, resolver) {
++  try {
++    resolver(function resolvePromise(value) {
++      _resolve(promise, value);
++    }, function rejectPromise(reason) {
++      _reject(promise, reason);
++    });
++  } catch (e) {
++    _reject(promise, e);
++  }
++}
++
++var id = 0;
++function nextId() {
++  return id++;
++}
++
++function makePromise(promise) {
++  promise[PROMISE_ID] = id++;
++  promise._state = undefined;
++  promise._result = undefined;
++  promise._subscribers = [];
++}
++
++function Enumerator(Constructor, input) {
++  this._instanceConstructor = Constructor;
++  this.promise = new Constructor(noop);
++
++  if (!this.promise[PROMISE_ID]) {
++    makePromise(this.promise);
++  }
++
++  if (isArray(input)) {
++    this._input = input;
++    this.length = input.length;
++    this._remaining = input.length;
++
++    this._result = new Array(this.length);
++
++    if (this.length === 0) {
++      fulfill(this.promise, this._result);
++    } else {
++      this.length = this.length || 0;
++      this._enumerate();
++      if (this._remaining === 0) {
++        fulfill(this.promise, this._result);
+       }
+     }
++  } else {
++    _reject(this.promise, validationError());
++  }
++}
+ 
+-    function lib$es6$promise$$internal$$publishRejection(promise) {
+-      if (promise._onerror) {
+-        promise._onerror(promise._result);
+-      }
++function validationError() {
++  return new Error('Array Methods must be provided an Array');
++};
+ 
+-      lib$es6$promise$$internal$$publish(promise);
+-    }
++Enumerator.prototype._enumerate = function () {
++  var length = this.length;
++  var _input = this._input;
+ 
+-    function lib$es6$promise$$internal$$fulfill(promise, value) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
++  for (var i = 0; this._state === PENDING && i < length; i++) {
++    this._eachEntry(_input[i], i);
++  }
++};
+ 
+-      promise._result = value;
+-      promise._state = lib$es6$promise$$internal$$FULFILLED;
++Enumerator.prototype._eachEntry = function (entry, i) {
++  var c = this._instanceConstructor;
++  var resolve$$ = c.resolve;
+ 
+-      if (promise._subscribers.length !== 0) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, promise);
+-      }
++  if (resolve$$ === resolve) {
++    var _then = getThen(entry);
++
++    if (_then === then && entry._state !== PENDING) {
++      this._settledAt(entry._state, i, entry._result);
++    } else if (typeof _then !== 'function') {
++      this._remaining--;
++      this._result[i] = entry;
++    } else if (c === Promise) {
++      var promise = new c(noop);
++      handleMaybeThenable(promise, entry, _then);
++      this._willSettleAt(promise, i);
++    } else {
++      this._willSettleAt(new c(function (resolve$$) {
++        return resolve$$(entry);
++      }), i);
+     }
++  } else {
++    this._willSettleAt(resolve$$(entry), i);
++  }
++};
++
++Enumerator.prototype._settledAt = function (state, i, value) {
++  var promise = this.promise;
+ 
+-    function lib$es6$promise$$internal$$reject(promise, reason) {
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
+-      promise._state = lib$es6$promise$$internal$$REJECTED;
+-      promise._result = reason;
++  if (promise._state === PENDING) {
++    this._remaining--;
+ 
+-      lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publishRejection, promise);
++    if (state === REJECTED) {
++      _reject(promise, value);
++    } else {
++      this._result[i] = value;
+     }
++  }
+ 
+-    function lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection) {
+-      var subscribers = parent._subscribers;
+-      var length = subscribers.length;
++  if (this._remaining === 0) {
++    fulfill(promise, this._result);
++  }
++};
+ 
+-      parent._onerror = null;
++Enumerator.prototype._willSettleAt = function (promise, i) {
++  var enumerator = this;
+ 
+-      subscribers[length] = child;
+-      subscribers[length + lib$es6$promise$$internal$$FULFILLED] = onFulfillment;
+-      subscribers[length + lib$es6$promise$$internal$$REJECTED]  = onRejection;
++  subscribe(promise, undefined, function (value) {
++    return enumerator._settledAt(FULFILLED, i, value);
++  }, function (reason) {
++    return enumerator._settledAt(REJECTED, i, reason);
++  });
++};
+ 
+-      if (length === 0 && parent._state) {
+-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, parent);
+-      }
+-    }
++/**
++  `Promise.all` accepts an array of promises, and returns a new promise which
++  is fulfilled with an array of fulfillment values for the passed promises, or
++  rejected with the reason of the first passed promise to be rejected. It casts all
++  elements of the passed iterable to promises as it runs this algorithm.
+ 
+-    function lib$es6$promise$$internal$$publish(promise) {
+-      var subscribers = promise._subscribers;
+-      var settled = promise._state;
++  Example:
+ 
+-      if (subscribers.length === 0) { return; }
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = resolve(2);
++  let promise3 = resolve(3);
++  let promises = [ promise1, promise2, promise3 ];
+ 
+-      var child, callback, detail = promise._result;
++  Promise.all(promises).then(function(array){
++    // The array here would be [ 1, 2, 3 ];
++  });
++  ```
+ 
+-      for (var i = 0; i < subscribers.length; i += 3) {
+-        child = subscribers[i];
+-        callback = subscribers[i + settled];
++  If any of the `promises` given to `all` are rejected, the first promise
++  that is rejected will be given as an argument to the returned promises's
++  rejection handler. For example:
+ 
+-        if (child) {
+-          lib$es6$promise$$internal$$invokeCallback(settled, child, callback, detail);
+-        } else {
+-          callback(detail);
+-        }
+-      }
++  Example:
+ 
+-      promise._subscribers.length = 0;
+-    }
++  ```javascript
++  let promise1 = resolve(1);
++  let promise2 = reject(new Error("2"));
++  let promise3 = reject(new Error("3"));
++  let promises = [ promise1, promise2, promise3 ];
+ 
+-    function lib$es6$promise$$internal$$ErrorObject() {
+-      this.error = null;
+-    }
++  Promise.all(promises).then(function(array){
++    // Code here never runs because there are rejected promises!
++  }, function(error) {
++    // error.message === "2"
++  });
++  ```
++
++  @method all
++  @static
++  @param {Array} entries array of promises
++  @param {String} label optional string for labeling the promise.
++  Useful for tooling.
++  @return {Promise} promise that is fulfilled when all `promises` have been
++  fulfilled, or rejected if any of them become rejected.
++  @static
++*/
++function all(entries) {
++  return new Enumerator(this, entries).promise;
++}
+ 
+-    var lib$es6$promise$$internal$$TRY_CATCH_ERROR = new lib$es6$promise$$internal$$ErrorObject();
++/**
++  `Promise.race` returns a new promise which is settled in the same way as the
++  first passed promise to settle.
+ 
+-    function lib$es6$promise$$internal$$tryCatch(callback, detail) {
+-      try {
+-        return callback(detail);
+-      } catch(e) {
+-        lib$es6$promise$$internal$$TRY_CATCH_ERROR.error = e;
+-        return lib$es6$promise$$internal$$TRY_CATCH_ERROR;
+-      }
+-    }
++  Example:
+ 
+-    function lib$es6$promise$$internal$$invokeCallback(settled, promise, callback, detail) {
+-      var hasCallback = lib$es6$promise$utils$$isFunction(callback),
+-          value, error, succeeded, failed;
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-      if (hasCallback) {
+-        value = lib$es6$promise$$internal$$tryCatch(callback, detail);
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 2');
++    }, 100);
++  });
+ 
+-        if (value === lib$es6$promise$$internal$$TRY_CATCH_ERROR) {
+-          failed = true;
+-          error = value.error;
+-          value = null;
+-        } else {
+-          succeeded = true;
+-        }
++  Promise.race([promise1, promise2]).then(function(result){
++    // result === 'promise 2' because it was resolved before promise1
++    // was resolved.
++  });
++  ```
++
++  `Promise.race` is deterministic in that only the state of the first
++  settled promise matters. For example, even if other promises given to the
++  `promises` array argument are resolved, but the first settled promise has
++  become rejected before the other promises became fulfilled, the returned
++  promise will become rejected:
++
++  ```javascript
++  let promise1 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      resolve('promise 1');
++    }, 200);
++  });
+ 
+-        if (promise === value) {
+-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$cannotReturnOwn());
+-          return;
+-        }
++  let promise2 = new Promise(function(resolve, reject){
++    setTimeout(function(){
++      reject(new Error('promise 2'));
++    }, 100);
++  });
+ 
+-      } else {
+-        value = detail;
+-        succeeded = true;
+-      }
++  Promise.race([promise1, promise2]).then(function(result){
++    // Code here never runs
++  }, function(reason){
++    // reason.message === 'promise 2' because promise 2 became rejected before
++    // promise 1 became fulfilled
++  });
++  ```
+ 
+-      if (promise._state !== lib$es6$promise$$internal$$PENDING) {
+-        // noop
+-      } else if (hasCallback && succeeded) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      } else if (failed) {
+-        lib$es6$promise$$internal$$reject(promise, error);
+-      } else if (settled === lib$es6$promise$$internal$$FULFILLED) {
+-        lib$es6$promise$$internal$$fulfill(promise, value);
+-      } else if (settled === lib$es6$promise$$internal$$REJECTED) {
+-        lib$es6$promise$$internal$$reject(promise, value);
+-      }
+-    }
++  An example real-world use case is implementing timeouts:
+ 
+-    function lib$es6$promise$$internal$$initializePromise(promise, resolver) {
+-      try {
+-        resolver(function resolvePromise(value){
+-          lib$es6$promise$$internal$$resolve(promise, value);
+-        }, function rejectPromise(reason) {
+-          lib$es6$promise$$internal$$reject(promise, reason);
+-        });
+-      } catch(e) {
+-        lib$es6$promise$$internal$$reject(promise, e);
++  ```javascript
++  Promise.race([ajax('foo.json'), timeout(5000)])
++  ```
++
++  @method race
++  @static
++  @param {Array} promises array of promises to observe
++  Useful for tooling.
++  @return {Promise} a promise which settles in the same way as the first passed
++  promise to settle.
++*/
++function race(entries) {
++  /*jshint validthis:true */
++  var Constructor = this;
++
++  if (!isArray(entries)) {
++    return new Constructor(function (_, reject) {
++      return reject(new TypeError('You must pass an array to race.'));
++    });
++  } else {
++    return new Constructor(function (resolve, reject) {
++      var length = entries.length;
++      for (var i = 0; i < length; i++) {
++        Constructor.resolve(entries[i]).then(resolve, reject);
+       }
+-    }
++    });
++  }
++}
+ 
+-    function lib$es6$promise$promise$all$$all(entries) {
+-      return new lib$es6$promise$enumerator$$default(this, entries).promise;
+-    }
+-    var lib$es6$promise$promise$all$$default = lib$es6$promise$promise$all$$all;
+-    function lib$es6$promise$promise$race$$race(entries) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
++/**
++  `Promise.reject` returns a promise rejected with the passed `reason`.
++  It is shorthand for the following:
+ 
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
++  ```javascript
++  let promise = new Promise(function(resolve, reject){
++    reject(new Error('WHOOPS'));
++  });
+ 
+-      if (!lib$es6$promise$utils$$isArray(entries)) {
+-        lib$es6$promise$$internal$$reject(promise, new TypeError('You must pass an array to race.'));
+-        return promise;
+-      }
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      var length = entries.length;
++  Instead of writing the above, your code now simply becomes the following:
+ 
+-      function onFulfillment(value) {
+-        lib$es6$promise$$internal$$resolve(promise, value);
+-      }
++  ```javascript
++  let promise = Promise.reject(new Error('WHOOPS'));
+ 
+-      function onRejection(reason) {
+-        lib$es6$promise$$internal$$reject(promise, reason);
+-      }
++  promise.then(function(value){
++    // Code here doesn't run because the promise is rejected!
++  }, function(reason){
++    // reason.message === 'WHOOPS'
++  });
++  ```
+ 
+-      for (var i = 0; promise._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        lib$es6$promise$$internal$$subscribe(Constructor.resolve(entries[i]), undefined, onFulfillment, onRejection);
+-      }
++  @method reject
++  @static
++  @param {Any} reason value that the returned promise will be rejected with.
++  Useful for tooling.
++  @return {Promise} a promise rejected with the given `reason`.
++*/
++function reject(reason) {
++  /*jshint validthis:true */
++  var Constructor = this;
++  var promise = new Constructor(noop);
++  _reject(promise, reason);
++  return promise;
++}
+ 
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$race$$default = lib$es6$promise$promise$race$$race;
+-    function lib$es6$promise$promise$reject$$reject(reason) {
+-      /*jshint validthis:true */
+-      var Constructor = this;
+-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
+-      lib$es6$promise$$internal$$reject(promise, reason);
+-      return promise;
+-    }
+-    var lib$es6$promise$promise$reject$$default = lib$es6$promise$promise$reject$$reject;
++function needsResolver() {
++  throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
++}
++
++function needsNew() {
++  throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
++}
+ 
+-    var lib$es6$promise$promise$$counter = 0;
++/**
++  Promise objects represent the eventual result of an asynchronous operation. The
++  primary way of interacting with a promise is through its `then` method, which
++  registers callbacks to receive either a promise's eventual value or the reason
++  why the promise cannot be fulfilled.
+ 
+-    function lib$es6$promise$promise$$needsResolver() {
+-      throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
+-    }
++  Terminology
++  -----------
+ 
+-    function lib$es6$promise$promise$$needsNew() {
+-      throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
+-    }
++  - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
++  - `thenable` is an object or function that defines a `then` method.
++  - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
++  - `exception` is a value that is thrown using the throw statement.
++  - `reason` is a value that indicates why a promise was rejected.
++  - `settled` the final resting state of a promise, fulfilled or rejected.
++
++  A promise can be in one of three states: pending, fulfilled, or rejected.
++
++  Promises that are fulfilled have a fulfillment value and are in the fulfilled
++  state.  Promises that are rejected have a rejection reason and are in the
++  rejected state.  A fulfillment value is never a thenable.
++
++  Promises can also be said to *resolve* a value.  If this value is also a
++  promise, then the original promise's settled state will match the value's
++  settled state.  So a promise that *resolves* a promise that rejects will
++  itself reject, and a promise that *resolves* a promise that fulfills will
++  itself fulfill.
+ 
+-    var lib$es6$promise$promise$$default = lib$es6$promise$promise$$Promise;
+-    /**
+-      Promise objects represent the eventual result of an asynchronous operation. The
+-      primary way of interacting with a promise is through its `then` method, which
+-      registers callbacks to receive either a promise's eventual value or the reason
+-      why the promise cannot be fulfilled.
+ 
+-      Terminology
+-      -----------
++  Basic Usage:
++  ------------
+ 
+-      - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
+-      - `thenable` is an object or function that defines a `then` method.
+-      - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
+-      - `exception` is a value that is thrown using the throw statement.
+-      - `reason` is a value that indicates why a promise was rejected.
+-      - `settled` the final resting state of a promise, fulfilled or rejected.
++  ```js
++  let promise = new Promise(function(resolve, reject) {
++    // on success
++    resolve(value);
+ 
+-      A promise can be in one of three states: pending, fulfilled, or rejected.
++    // on failure
++    reject(reason);
++  });
++
++  promise.then(function(value) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
++
++  Advanced Usage:
++  ---------------
+ 
+-      Promises that are fulfilled have a fulfillment value and are in the fulfilled
+-      state.  Promises that are rejected have a rejection reason and are in the
+-      rejected state.  A fulfillment value is never a thenable.
++  Promises shine when abstracting away asynchronous interactions such as
++  `XMLHttpRequest`s.
+ 
+-      Promises can also be said to *resolve* a value.  If this value is also a
+-      promise, then the original promise's settled state will match the value's
+-      settled state.  So a promise that *resolves* a promise that rejects will
+-      itself reject, and a promise that *resolves* a promise that fulfills will
+-      itself fulfill.
++  ```js
++  function getJSON(url) {
++    return new Promise(function(resolve, reject){
++      let xhr = new XMLHttpRequest();
+ 
++      xhr.open('GET', url);
++      xhr.onreadystatechange = handler;
++      xhr.responseType = 'json';
++      xhr.setRequestHeader('Accept', 'application/json');
++      xhr.send();
++
++      function handler() {
++        if (this.readyState === this.DONE) {
++          if (this.status === 200) {
++            resolve(this.response);
++          } else {
++            reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
++          }
++        }
++      };
++    });
++  }
+ 
+-      Basic Usage:
+-      ------------
++  getJSON('/posts.json').then(function(json) {
++    // on fulfillment
++  }, function(reason) {
++    // on rejection
++  });
++  ```
+ 
+-      ```js
+-      var promise = new Promise(function(resolve, reject) {
+-        // on success
+-        resolve(value);
++  Unlike callbacks, promises are great composable primitives.
+ 
+-        // on failure
+-        reject(reason);
+-      });
++  ```js
++  Promise.all([
++    getJSON('/posts'),
++    getJSON('/comments')
++  ]).then(function(values){
++    values[0] // => postsJSON
++    values[1] // => commentsJSON
+ 
+-      promise.then(function(value) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++    return values;
++  });
++  ```
+ 
+-      Advanced Usage:
+-      ---------------
++  @class Promise
++  @param {function} resolver
++  Useful for tooling.
++  @constructor
++*/
++function Promise(resolver) {
++  this[PROMISE_ID] = nextId();
++  this._result = this._state = undefined;
++  this._subscribers = [];
+ 
+-      Promises shine when abstracting away asynchronous interactions such as
+-      `XMLHttpRequest`s.
++  if (noop !== resolver) {
++    typeof resolver !== 'function' && needsResolver();
++    this instanceof Promise ? initializePromise(this, resolver) : needsNew();
++  }
++}
+ 
+-      ```js
+-      function getJSON(url) {
+-        return new Promise(function(resolve, reject){
+-          var xhr = new XMLHttpRequest();
++Promise.all = all;
++Promise.race = race;
++Promise.resolve = resolve;
++Promise.reject = reject;
++Promise._setScheduler = setScheduler;
++Promise._setAsap = setAsap;
++Promise._asap = asap;
+ 
+-          xhr.open('GET', url);
+-          xhr.onreadystatechange = handler;
+-          xhr.responseType = 'json';
+-          xhr.setRequestHeader('Accept', 'application/json');
+-          xhr.send();
++Promise.prototype = {
++  constructor: Promise,
+ 
+-          function handler() {
+-            if (this.readyState === this.DONE) {
+-              if (this.status === 200) {
+-                resolve(this.response);
+-              } else {
+-                reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
++  /**
++    The primary way of interacting with a promise is through its `then` method,
++    which registers callbacks to receive either a promise's eventual value or the
++    reason why the promise cannot be fulfilled.
++  
++    ```js
++    findUser().then(function(user){
++      // user is available
++    }, function(reason){
++      // user is unavailable, and you are given the reason why
++    });
++    ```
++  
++    Chaining
++    --------
++  
++    The return value of `then` is itself a promise.  This second, 'downstream'
++    promise is resolved with the return value of the first promise's fulfillment
++    or rejection handler, or rejected if the handler throws an exception.
++  
++    ```js
++    findUser().then(function (user) {
++      return user.name;
++    }, function (reason) {
++      return 'default name';
++    }).then(function (userName) {
++      // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
++      // will be `'default name'`
++    });
++  
++    findUser().then(function (user) {
++      throw new Error('Found user, but still unhappy');
++    }, function (reason) {
++      throw new Error('`findUser` rejected and we're unhappy');
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
++      // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
++    });
++    ```
++    If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
++  
++    ```js
++    findUser().then(function (user) {
++      throw new PedagogicalException('Upstream error');
++    }).then(function (value) {
++      // never reached
++    }).then(function (value) {
++      // never reached
++    }, function (reason) {
++      // The `PedgagocialException` is propagated all the way down to here
++    });
++    ```
++  
++    Assimilation
++    ------------
++  
++    Sometimes the value you want to propagate to a downstream promise can only be
++    retrieved asynchronously. This can be achieved by returning a promise in the
++    fulfillment or rejection handler. The downstream promise will then be pending
++    until the returned promise is settled. This is called *assimilation*.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // The user's comments are now available
++    });
++    ```
++  
++    If the assimliated promise rejects, then the downstream promise will also reject.
++  
++    ```js
++    findUser().then(function (user) {
++      return findCommentsByAuthor(user);
++    }).then(function (comments) {
++      // If `findCommentsByAuthor` fulfills, we'll have the value here
++    }, function (reason) {
++      // If `findCommentsByAuthor` rejects, we'll have the reason here
++    });
++    ```
++  
++    Simple Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let result;
++  
++    try {
++      result = findResult();
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++    findResult(function(result, err){
++      if (err) {
++        // failure
++      } else {
++        // success
++      }
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findResult().then(function(result){
++      // success
++    }, function(reason){
++      // failure
++    });
++    ```
++  
++    Advanced Example
++    --------------
++  
++    Synchronous Example
++  
++    ```javascript
++    let author, books;
++  
++    try {
++      author = findAuthor();
++      books  = findBooksByAuthor(author);
++      // success
++    } catch(reason) {
++      // failure
++    }
++    ```
++  
++    Errback Example
++  
++    ```js
++  
++    function foundBooks(books) {
++  
++    }
++  
++    function failure(reason) {
++  
++    }
++  
++    findAuthor(function(author, err){
++      if (err) {
++        failure(err);
++        // failure
++      } else {
++        try {
++          findBoooksByAuthor(author, function(books, err) {
++            if (err) {
++              failure(err);
++            } else {
++              try {
++                foundBooks(books);
++              } catch(reason) {
++                failure(reason);
+               }
+             }
+-          };
+-        });
++          });
++        } catch(error) {
++          failure(err);
++        }
++        // success
+       }
++    });
++    ```
++  
++    Promise Example;
++  
++    ```javascript
++    findAuthor().
++      then(findBooksByAuthor).
++      then(function(books){
++        // found books
++    }).catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method then
++    @param {Function} onFulfilled
++    @param {Function} onRejected
++    Useful for tooling.
++    @return {Promise}
++  */
++  then: then,
+ 
+-      getJSON('/posts.json').then(function(json) {
+-        // on fulfillment
+-      }, function(reason) {
+-        // on rejection
+-      });
+-      ```
++  /**
++    `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
++    as the catch block of a try/catch statement.
++  
++    ```js
++    function findAuthor(){
++      throw new Error('couldn't find that author');
++    }
++  
++    // synchronous
++    try {
++      findAuthor();
++    } catch(reason) {
++      // something went wrong
++    }
++  
++    // async with promises
++    findAuthor().catch(function(reason){
++      // something went wrong
++    });
++    ```
++  
++    @method catch
++    @param {Function} onRejection
++    Useful for tooling.
++    @return {Promise}
++  */
++  'catch': function _catch(onRejection) {
++    return this.then(null, onRejection);
++  }
++};
+ 
+-      Unlike callbacks, promises are great composable primitives.
++function polyfill() {
++    var local = undefined;
+ 
+-      ```js
+-      Promise.all([
+-        getJSON('/posts'),
+-        getJSON('/comments')
+-      ]).then(function(values){
+-        values[0] // => postsJSON
+-        values[1] // => commentsJSON
++    if (typeof global !== 'undefined') {
++        local = global;
++    } else if (typeof self !== 'undefined') {
++        local = self;
++    } else {
++        try {
++            local = Function('return this')();
++        } catch (e) {
++            throw new Error('polyfill failed because global object is unavailable in this environment');
++        }
++    }
+ 
+-        return values;
+-      });
+-      ```
++    var P = local.Promise;
+ 
+-      @class Promise
+-      @param {function} resolver
+-      Useful for tooling.
+-      @constructor
+-    */
+-    function lib$es6$promise$promise$$Promise(resolver) {
+-      this._id = lib$es6$promise$promise$$counter++;
+-      this._state = undefined;
+-      this._result = undefined;
+-      this._subscribers = [];
++    if (P) {
++        var promiseToString = null;
++        try {
++            promiseToString = Object.prototype.toString.call(P.resolve());
++        } catch (e) {
++            // silently ignored
++        }
+ 
+-      if (lib$es6$promise$$internal$$noop !== resolver) {
+-        typeof resolver !== 'function' && lib$es6$promise$promise$$needsResolver();
+-        this instanceof lib$es6$promise$promise$$Promise ? lib$es6$promise$$internal$$initializePromise(this, resolver) : lib$es6$promise$promise$$needsNew();
+-      }
++        if (promiseToString === '[object Promise]' && !P.cast) {
++            return;
++        }
+     }
+ 
+-    lib$es6$promise$promise$$Promise.all = lib$es6$promise$promise$all$$default;
+-    lib$es6$promise$promise$$Promise.race = lib$es6$promise$promise$race$$default;
+-    lib$es6$promise$promise$$Promise.resolve = lib$es6$promise$promise$resolve$$default;
+-    lib$es6$promise$promise$$Promise.reject = lib$es6$promise$promise$reject$$default;
+-    lib$es6$promise$promise$$Promise._setScheduler = lib$es6$promise$asap$$setScheduler;
+-    lib$es6$promise$promise$$Promise._setAsap = lib$es6$promise$asap$$setAsap;
+-    lib$es6$promise$promise$$Promise._asap = lib$es6$promise$asap$$asap;
++    local.Promise = Promise;
++}
+ 
+-    lib$es6$promise$promise$$Promise.prototype = {
+-      constructor: lib$es6$promise$promise$$Promise,
++polyfill();
++// Strange compat..
++Promise.polyfill = polyfill;
++Promise.Promise = Promise;
+ 
+-    /**
+-      The primary way of interacting with a promise is through its `then` method,
+-      which registers callbacks to receive either a promise's eventual value or the
+-      reason why the promise cannot be fulfilled.
+-
+-      ```js
+-      findUser().then(function(user){
+-        // user is available
+-      }, function(reason){
+-        // user is unavailable, and you are given the reason why
+-      });
+-      ```
+-
+-      Chaining
+-      --------
+-
+-      The return value of `then` is itself a promise.  This second, 'downstream'
+-      promise is resolved with the return value of the first promise's fulfillment
+-      or rejection handler, or rejected if the handler throws an exception.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        return user.name;
+-      }, function (reason) {
+-        return 'default name';
+-      }).then(function (userName) {
+-        // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
+-        // will be `'default name'`
+-      });
++return Promise;
+ 
+-      findUser().then(function (user) {
+-        throw new Error('Found user, but still unhappy');
+-      }, function (reason) {
+-        throw new Error('`findUser` rejected and we're unhappy');
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
+-        // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
+-      });
+-      ```
+-      If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
+-
+-      ```js
+-      findUser().then(function (user) {
+-        throw new PedagogicalException('Upstream error');
+-      }).then(function (value) {
+-        // never reached
+-      }).then(function (value) {
+-        // never reached
+-      }, function (reason) {
+-        // The `PedgagocialException` is propagated all the way down to here
+-      });
+-      ```
++})));
+ 
+-      Assimilation
+-      ------------
++}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"_process":403}],96:[function(require,module,exports){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-      Sometimes the value you want to propagate to a downstream promise can only be
+-      retrieved asynchronously. This can be achieved by returning a promise in the
+-      fulfillment or rejection handler. The downstream promise will then be pending
+-      until the returned promise is settled. This is called *assimilation*.
++function EventEmitter() {
++  this._events = this._events || {};
++  this._maxListeners = this._maxListeners || undefined;
++}
++module.exports = EventEmitter;
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // The user's comments are now available
+-      });
+-      ```
++// Backwards-compat with node 0.10.x
++EventEmitter.EventEmitter = EventEmitter;
+ 
+-      If the assimliated promise rejects, then the downstream promise will also reject.
++EventEmitter.prototype._events = undefined;
++EventEmitter.prototype._maxListeners = undefined;
+ 
+-      ```js
+-      findUser().then(function (user) {
+-        return findCommentsByAuthor(user);
+-      }).then(function (comments) {
+-        // If `findCommentsByAuthor` fulfills, we'll have the value here
+-      }, function (reason) {
+-        // If `findCommentsByAuthor` rejects, we'll have the reason here
+-      });
+-      ```
++// By default EventEmitters will print a warning if more than 10 listeners are
++// added to it. This is a useful default which helps finding memory leaks.
++EventEmitter.defaultMaxListeners = 10;
+ 
+-      Simple Example
+-      --------------
++// Obviously not all Emitters should be limited to 10. This function allows
++// that to be increased. Set to zero for unlimited.
++EventEmitter.prototype.setMaxListeners = function(n) {
++  if (!isNumber(n) || n < 0 || isNaN(n))
++    throw TypeError('n must be a positive number');
++  this._maxListeners = n;
++  return this;
++};
+ 
+-      Synchronous Example
++EventEmitter.prototype.emit = function(type) {
++  var er, handler, len, args, i, listeners;
+ 
+-      ```javascript
+-      var result;
++  if (!this._events)
++    this._events = {};
+ 
+-      try {
+-        result = findResult();
+-        // success
+-      } catch(reason) {
+-        // failure
++  // If there is no 'error' event listener then throw.
++  if (type === 'error') {
++    if (!this._events.error ||
++        (isObject(this._events.error) && !this._events.error.length)) {
++      er = arguments[1];
++      if (er instanceof Error) {
++        throw er; // Unhandled 'error' event
++      } else {
++        // At least give some kind of context to the user
++        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
++        err.context = er;
++        throw err;
+       }
+-      ```
+-
+-      Errback Example
++    }
++  }
+ 
+-      ```js
+-      findResult(function(result, err){
+-        if (err) {
+-          // failure
+-        } else {
+-          // success
+-        }
+-      });
+-      ```
++  handler = this._events[type];
+ 
+-      Promise Example;
++  if (isUndefined(handler))
++    return false;
+ 
+-      ```javascript
+-      findResult().then(function(result){
+-        // success
+-      }, function(reason){
+-        // failure
+-      });
+-      ```
++  if (isFunction(handler)) {
++    switch (arguments.length) {
++      // fast cases
++      case 1:
++        handler.call(this);
++        break;
++      case 2:
++        handler.call(this, arguments[1]);
++        break;
++      case 3:
++        handler.call(this, arguments[1], arguments[2]);
++        break;
++      // slower
++      default:
++        args = Array.prototype.slice.call(arguments, 1);
++        handler.apply(this, args);
++    }
++  } else if (isObject(handler)) {
++    args = Array.prototype.slice.call(arguments, 1);
++    listeners = handler.slice();
++    len = listeners.length;
++    for (i = 0; i < len; i++)
++      listeners[i].apply(this, args);
++  }
+ 
+-      Advanced Example
+-      --------------
++  return true;
++};
+ 
+-      Synchronous Example
++EventEmitter.prototype.addListener = function(type, listener) {
++  var m;
+ 
+-      ```javascript
+-      var author, books;
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-      try {
+-        author = findAuthor();
+-        books  = findBooksByAuthor(author);
+-        // success
+-      } catch(reason) {
+-        // failure
+-      }
+-      ```
++  if (!this._events)
++    this._events = {};
+ 
+-      Errback Example
++  // To avoid recursion in the case that type === "newListener"! Before
++  // adding it to the listeners, first emit "newListener".
++  if (this._events.newListener)
++    this.emit('newListener', type,
++              isFunction(listener.listener) ?
++              listener.listener : listener);
+ 
+-      ```js
++  if (!this._events[type])
++    // Optimize the case of one listener. Don't need the extra array object.
++    this._events[type] = listener;
++  else if (isObject(this._events[type]))
++    // If we've already got an array, just append.
++    this._events[type].push(listener);
++  else
++    // Adding the second element, need to change to array.
++    this._events[type] = [this._events[type], listener];
+ 
+-      function foundBooks(books) {
++  // Check for listener leak
++  if (isObject(this._events[type]) && !this._events[type].warned) {
++    if (!isUndefined(this._maxListeners)) {
++      m = this._maxListeners;
++    } else {
++      m = EventEmitter.defaultMaxListeners;
++    }
+ 
++    if (m && m > 0 && this._events[type].length > m) {
++      this._events[type].warned = true;
++      console.error('(node) warning: possible EventEmitter memory ' +
++                    'leak detected. %d listeners added. ' +
++                    'Use emitter.setMaxListeners() to increase limit.',
++                    this._events[type].length);
++      if (typeof console.trace === 'function') {
++        // not supported in IE 10
++        console.trace();
+       }
++    }
++  }
+ 
+-      function failure(reason) {
++  return this;
++};
+ 
+-      }
++EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+ 
+-      findAuthor(function(author, err){
+-        if (err) {
+-          failure(err);
+-          // failure
+-        } else {
+-          try {
+-            findBoooksByAuthor(author, function(books, err) {
+-              if (err) {
+-                failure(err);
+-              } else {
+-                try {
+-                  foundBooks(books);
+-                } catch(reason) {
+-                  failure(reason);
+-                }
+-              }
+-            });
+-          } catch(error) {
+-            failure(err);
+-          }
+-          // success
+-        }
+-      });
+-      ```
++EventEmitter.prototype.once = function(type, listener) {
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-      Promise Example;
++  var fired = false;
+ 
+-      ```javascript
+-      findAuthor().
+-        then(findBooksByAuthor).
+-        then(function(books){
+-          // found books
+-      }).catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
++  function g() {
++    this.removeListener(type, g);
+ 
+-      @method then
+-      @param {Function} onFulfilled
+-      @param {Function} onRejected
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      then: lib$es6$promise$then$$default,
++    if (!fired) {
++      fired = true;
++      listener.apply(this, arguments);
++    }
++  }
+ 
+-    /**
+-      `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
+-      as the catch block of a try/catch statement.
++  g.listener = listener;
++  this.on(type, g);
+ 
+-      ```js
+-      function findAuthor(){
+-        throw new Error('couldn't find that author');
+-      }
++  return this;
++};
+ 
+-      // synchronous
+-      try {
+-        findAuthor();
+-      } catch(reason) {
+-        // something went wrong
+-      }
++// emits a 'removeListener' event iff the listener was removed
++EventEmitter.prototype.removeListener = function(type, listener) {
++  var list, position, length, i;
+ 
+-      // async with promises
+-      findAuthor().catch(function(reason){
+-        // something went wrong
+-      });
+-      ```
++  if (!isFunction(listener))
++    throw TypeError('listener must be a function');
+ 
+-      @method catch
+-      @param {Function} onRejection
+-      Useful for tooling.
+-      @return {Promise}
+-    */
+-      'catch': function(onRejection) {
+-        return this.then(null, onRejection);
+-      }
+-    };
+-    var lib$es6$promise$enumerator$$default = lib$es6$promise$enumerator$$Enumerator;
+-    function lib$es6$promise$enumerator$$Enumerator(Constructor, input) {
+-      this._instanceConstructor = Constructor;
+-      this.promise = new Constructor(lib$es6$promise$$internal$$noop);
++  if (!this._events || !this._events[type])
++    return this;
+ 
+-      if (Array.isArray(input)) {
+-        this._input     = input;
+-        this.length     = input.length;
+-        this._remaining = input.length;
++  list = this._events[type];
++  length = list.length;
++  position = -1;
+ 
+-        this._result = new Array(this.length);
++  if (list === listener ||
++      (isFunction(list.listener) && list.listener === listener)) {
++    delete this._events[type];
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
+ 
+-        if (this.length === 0) {
+-          lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-        } else {
+-          this.length = this.length || 0;
+-          this._enumerate();
+-          if (this._remaining === 0) {
+-            lib$es6$promise$$internal$$fulfill(this.promise, this._result);
+-          }
+-        }
+-      } else {
+-        lib$es6$promise$$internal$$reject(this.promise, this._validationError());
++  } else if (isObject(list)) {
++    for (i = length; i-- > 0;) {
++      if (list[i] === listener ||
++          (list[i].listener && list[i].listener === listener)) {
++        position = i;
++        break;
+       }
+     }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._validationError = function() {
+-      return new Error('Array Methods must be provided an Array');
+-    };
++    if (position < 0)
++      return this;
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._enumerate = function() {
+-      var length  = this.length;
+-      var input   = this._input;
++    if (list.length === 1) {
++      list.length = 0;
++      delete this._events[type];
++    } else {
++      list.splice(position, 1);
++    }
+ 
+-      for (var i = 0; this._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
+-        this._eachEntry(input[i], i);
+-      }
+-    };
++    if (this._events.removeListener)
++      this.emit('removeListener', type, listener);
++  }
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._eachEntry = function(entry, i) {
+-      var c = this._instanceConstructor;
+-      var resolve = c.resolve;
++  return this;
++};
+ 
+-      if (resolve === lib$es6$promise$promise$resolve$$default) {
+-        var then = lib$es6$promise$$internal$$getThen(entry);
++EventEmitter.prototype.removeAllListeners = function(type) {
++  var key, listeners;
+ 
+-        if (then === lib$es6$promise$then$$default &&
+-            entry._state !== lib$es6$promise$$internal$$PENDING) {
+-          this._settledAt(entry._state, i, entry._result);
+-        } else if (typeof then !== 'function') {
+-          this._remaining--;
+-          this._result[i] = entry;
+-        } else if (c === lib$es6$promise$promise$$default) {
+-          var promise = new c(lib$es6$promise$$internal$$noop);
+-          lib$es6$promise$$internal$$handleMaybeThenable(promise, entry, then);
+-          this._willSettleAt(promise, i);
+-        } else {
+-          this._willSettleAt(new c(function(resolve) { resolve(entry); }), i);
+-        }
+-      } else {
+-        this._willSettleAt(resolve(entry), i);
+-      }
+-    };
++  if (!this._events)
++    return this;
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._settledAt = function(state, i, value) {
+-      var promise = this.promise;
++  // not listening for removeListener, no need to emit
++  if (!this._events.removeListener) {
++    if (arguments.length === 0)
++      this._events = {};
++    else if (this._events[type])
++      delete this._events[type];
++    return this;
++  }
+ 
+-      if (promise._state === lib$es6$promise$$internal$$PENDING) {
+-        this._remaining--;
++  // emit removeListener for all listeners on all events
++  if (arguments.length === 0) {
++    for (key in this._events) {
++      if (key === 'removeListener') continue;
++      this.removeAllListeners(key);
++    }
++    this.removeAllListeners('removeListener');
++    this._events = {};
++    return this;
++  }
+ 
+-        if (state === lib$es6$promise$$internal$$REJECTED) {
+-          lib$es6$promise$$internal$$reject(promise, value);
+-        } else {
+-          this._result[i] = value;
+-        }
+-      }
++  listeners = this._events[type];
+ 
+-      if (this._remaining === 0) {
+-        lib$es6$promise$$internal$$fulfill(promise, this._result);
+-      }
+-    };
++  if (isFunction(listeners)) {
++    this.removeListener(type, listeners);
++  } else if (listeners) {
++    // LIFO order
++    while (listeners.length)
++      this.removeListener(type, listeners[listeners.length - 1]);
++  }
++  delete this._events[type];
+ 
+-    lib$es6$promise$enumerator$$Enumerator.prototype._willSettleAt = function(promise, i) {
+-      var enumerator = this;
++  return this;
++};
+ 
+-      lib$es6$promise$$internal$$subscribe(promise, undefined, function(value) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$FULFILLED, i, value);
+-      }, function(reason) {
+-        enumerator._settledAt(lib$es6$promise$$internal$$REJECTED, i, reason);
+-      });
+-    };
+-    function lib$es6$promise$polyfill$$polyfill() {
+-      var local;
++EventEmitter.prototype.listeners = function(type) {
++  var ret;
++  if (!this._events || !this._events[type])
++    ret = [];
++  else if (isFunction(this._events[type]))
++    ret = [this._events[type]];
++  else
++    ret = this._events[type].slice();
++  return ret;
++};
+ 
+-      if (typeof global !== 'undefined') {
+-          local = global;
+-      } else if (typeof self !== 'undefined') {
+-          local = self;
+-      } else {
+-          try {
+-              local = Function('return this')();
+-          } catch (e) {
+-              throw new Error('polyfill failed because global object is unavailable in this environment');
+-          }
+-      }
++EventEmitter.prototype.listenerCount = function(type) {
++  if (this._events) {
++    var evlistener = this._events[type];
+ 
+-      var P = local.Promise;
++    if (isFunction(evlistener))
++      return 1;
++    else if (evlistener)
++      return evlistener.length;
++  }
++  return 0;
++};
+ 
+-      if (P && Object.prototype.toString.call(P.resolve()) === '[object Promise]' && !P.cast) {
+-        return;
+-      }
++EventEmitter.listenerCount = function(emitter, type) {
++  return emitter.listenerCount(type);
++};
+ 
+-      local.Promise = lib$es6$promise$promise$$default;
+-    }
+-    var lib$es6$promise$polyfill$$default = lib$es6$promise$polyfill$$polyfill;
++function isFunction(arg) {
++  return typeof arg === 'function';
++}
+ 
+-    var lib$es6$promise$umd$$ES6Promise = {
+-      'Promise': lib$es6$promise$promise$$default,
+-      'polyfill': lib$es6$promise$polyfill$$default
+-    };
++function isNumber(arg) {
++  return typeof arg === 'number';
++}
+ 
+-    /* global define:true module:true window: true */
+-    if (typeof define === 'function' && define['amd']) {
+-      define(function() { return lib$es6$promise$umd$$ES6Promise; });
+-    } else if (typeof module !== 'undefined' && module['exports']) {
+-      module['exports'] = lib$es6$promise$umd$$ES6Promise;
+-    } else if (typeof this !== 'undefined') {
+-      this['ES6Promise'] = lib$es6$promise$umd$$ES6Promise;
+-    }
++function isObject(arg) {
++  return typeof arg === 'object' && arg !== null;
++}
++
++function isUndefined(arg) {
++  return arg === void 0;
++}
+ 
+-    lib$es6$promise$polyfill$$default();
+-}).call(this);
++},{}],97:[function(require,module,exports){
++"use strict"
+ 
++module.exports = extractPlanes
+ 
+-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"_process":60}],123:[function(require,module,exports){
++function extractPlanes(M, zNear, zFar) {
++  var z  = zNear || 0.0
++  var zf = zFar || 1.0
++  return [
++    [ M[12] + M[0], M[13] + M[1], M[14] + M[2], M[15] + M[3] ],
++    [ M[12] - M[0], M[13] - M[1], M[14] - M[2], M[15] - M[3] ],
++    [ M[12] + M[4], M[13] + M[5], M[14] + M[6], M[15] + M[7] ],
++    [ M[12] - M[4], M[13] - M[5], M[14] - M[6], M[15] - M[7] ],
++    [ z*M[12] + M[8], z*M[13] + M[9], z*M[14] + M[10], z*M[15] + M[11] ],
++    [ zf*M[12] - M[8], zf*M[13] - M[9], zf*M[14] - M[10], zf*M[15] - M[11] ]
++  ]
++}
++},{}],98:[function(require,module,exports){
+ /**
+  * inspired by is-number <https://github.com/jonschlinkert/is-number>
+  * but significantly simplified and sped up by ignoring number and string constructors
+@@ -24573,32639 +22350,36442 @@ module.exports = function(n) {
+     return n - n < 1;
+ };
+ 
+-},{}],124:[function(require,module,exports){
+-"use strict"
++},{}],99:[function(require,module,exports){
++'use strict';
+ 
+-var pool = require("typedarray-pool")
+-var ops = require("ndarray-ops")
+-var ndarray = require("ndarray")
++module.exports = createFilter;
+ 
+-var SUPPORTED_TYPES = [
+-  "uint8",
+-  "uint8_clamped",
+-  "uint16",
+-  "uint32",
+-  "int8",
+-  "int16",
+-  "int32",
+-  "float32" ]
++var types = ['Unknown', 'Point', 'LineString', 'Polygon'];
+ 
+-function GLBuffer(gl, type, handle, length, usage) {
+-  this.gl = gl
+-  this.type = type
+-  this.handle = handle
+-  this.length = length
+-  this.usage = usage
++/**
++ * Given a filter expressed as nested arrays, return a new function
++ * that evaluates whether a given feature (with a .properties or .tags property)
++ * passes its test.
++ *
++ * @param {Array} filter mapbox gl filter
++ * @returns {Function} filter-evaluating function
++ */
++function createFilter(filter) {
++    return new Function('f', 'var p = (f && f.properties || {}); return ' + compile(filter));
++}
++
++function compile(filter) {
++    if (!filter) return 'true';
++    var op = filter[0];
++    if (filter.length <= 1) return op === 'any' ? 'false' : 'true';
++    var str =
++        op === '==' ? compileComparisonOp(filter[1], filter[2], '===', false) :
++        op === '!=' ? compileComparisonOp(filter[1], filter[2], '!==', false) :
++        op === '<' ||
++        op === '>' ||
++        op === '<=' ||
++        op === '>=' ? compileComparisonOp(filter[1], filter[2], op, true) :
++        op === 'any' ? compileLogicalOp(filter.slice(1), '||') :
++        op === 'all' ? compileLogicalOp(filter.slice(1), '&&') :
++        op === 'none' ? compileNegation(compileLogicalOp(filter.slice(1), '||')) :
++        op === 'in' ? compileInOp(filter[1], filter.slice(2)) :
++        op === '!in' ? compileNegation(compileInOp(filter[1], filter.slice(2))) :
++        op === 'has' ? compileHasOp(filter[1]) :
++        op === '!has' ? compileNegation(compileHasOp([filter[1]])) :
++        'true';
++    return '(' + str + ')';
++}
++
++function compilePropertyReference(property) {
++    return property === '$type' ? 'f.type' :
++        property === '$id' ? 'f.id' :
++        'p[' + JSON.stringify(property) + ']';
++}
++
++function compileComparisonOp(property, value, op, checkType) {
++    var left = compilePropertyReference(property);
++    var right = property === '$type' ? types.indexOf(value) : JSON.stringify(value);
++    return (checkType ? 'typeof ' + left + '=== typeof ' + right + '&&' : '') + left + op + right;
++}
++
++function compileLogicalOp(expressions, op) {
++    return expressions.map(compile).join(op);
++}
++
++function compileInOp(property, values) {
++    if (property === '$type') values = values.map(function(value) { return types.indexOf(value); });
++    var left = JSON.stringify(values.sort(compare));
++    var right = compilePropertyReference(property);
++
++    if (values.length <= 200) return left + '.indexOf(' + right + ') !== -1';
++
++    return 'function(v, a, i, j) {' +
++        'while (i <= j) { var m = (i + j) >> 1;' +
++        '    if (a[m] === v) return true; if (a[m] > v) j = m - 1; else i = m + 1;' +
++        '}' +
++    'return false; }(' + right + ', ' + left + ',0,' + (values.length - 1) + ')';
+ }
+ 
+-var proto = GLBuffer.prototype
++function compileHasOp(property) {
++    return JSON.stringify(property) + ' in p';
++}
+ 
+-proto.bind = function() {
+-  this.gl.bindBuffer(this.type, this.handle)
++function compileNegation(expression) {
++    return '!(' + expression + ')';
+ }
+ 
+-proto.unbind = function() {
+-  this.gl.bindBuffer(this.type, null)
++// Comparison function to sort numbers and strings
++function compare(a, b) {
++    return a < b ? -1 : a > b ? 1 : 0;
+ }
+ 
+-proto.dispose = function() {
+-  this.gl.deleteBuffer(this.handle)
++},{}],100:[function(require,module,exports){
++'use strict'
++
++module.exports = createFilteredVector
++
++var cubicHermite = require('cubic-hermite')
++var bsearch = require('binary-search-bounds')
++
++function clamp(lo, hi, x) {
++  return Math.min(hi, Math.max(lo, x))
+ }
+ 
+-function updateTypeArray(gl, type, len, usage, data, offset) {
+-  var dataLen = data.length * data.BYTES_PER_ELEMENT
+-  if(offset < 0) {
+-    gl.bufferData(type, data, usage)
+-    return dataLen
+-  }
+-  if(dataLen + offset > len) {
+-    throw new Error("gl-buffer: If resizing buffer, must not specify offset")
++function FilteredVector(state0, velocity0, t0) {
++  this.dimension  = state0.length
++  this.bounds     = [ new Array(this.dimension), new Array(this.dimension) ]
++  for(var i=0; i<this.dimension; ++i) {
++    this.bounds[0][i] = -Infinity
++    this.bounds[1][i] = Infinity
+   }
+-  gl.bufferSubData(type, offset, data)
+-  return len
++  this._state     = state0.slice().reverse()
++  this._velocity  = velocity0.slice().reverse()
++  this._time      = [ t0 ]
++  this._scratch   = [ state0.slice(), state0.slice(), state0.slice(), state0.slice(), state0.slice() ]
+ }
+ 
+-function makeScratchTypeArray(array, dtype) {
+-  var res = pool.malloc(array.length, dtype)
+-  var n = array.length
+-  for(var i=0; i<n; ++i) {
+-    res[i] = array[i]
++var proto = FilteredVector.prototype
++
++proto.flush = function(t) {
++  var idx = bsearch.gt(this._time, t) - 1
++  if(idx <= 0) {
++    return
+   }
+-  return res
++  this._time.splice(0, idx)
++  this._state.splice(0, idx * this.dimension)
++  this._velocity.splice(0, idx * this.dimension)
+ }
+ 
+-function isPacked(shape, stride) {
+-  var n = 1
+-  for(var i=stride.length-1; i>=0; --i) {
+-    if(stride[i] !== n) {
+-      return false
++proto.curve = function(t) {
++  var time      = this._time
++  var n         = time.length
++  var idx       = bsearch.le(time, t)
++  var result    = this._scratch[0]
++  var state     = this._state
++  var velocity  = this._velocity
++  var d         = this.dimension
++  var bounds    = this.bounds
++  if(idx < 0) {
++    var ptr = d-1
++    for(var i=0; i<d; ++i, --ptr) {
++      result[i] = state[ptr]
++    }
++  } else if(idx >= n-1) {
++    var ptr = state.length-1
++    var tf = t - time[n-1]
++    for(var i=0; i<d; ++i, --ptr) {
++      result[i] = state[ptr] + tf * velocity[ptr]
++    }
++  } else {
++    var ptr = d * (idx+1) - 1
++    var t0  = time[idx]
++    var t1  = time[idx+1]
++    var dt  = (t1 - t0) || 1.0
++    var x0  = this._scratch[1]
++    var x1  = this._scratch[2]
++    var v0  = this._scratch[3]
++    var v1  = this._scratch[4]
++    var steady = true
++    for(var i=0; i<d; ++i, --ptr) {
++      x0[i] = state[ptr]
++      v0[i] = velocity[ptr] * dt
++      x1[i] = state[ptr+d]
++      v1[i] = velocity[ptr+d] * dt
++      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
++    }
++    if(steady) {
++      for(var i=0; i<d; ++i) {
++        result[i] = x0[i]
++      }
++    } else {
++      cubicHermite(x0, v0, x1, v1, (t-t0)/dt, result)
+     }
+-    n *= shape[i]
+   }
+-  return true
++  var lo = bounds[0]
++  var hi = bounds[1]
++  for(var i=0; i<d; ++i) {
++    result[i] = clamp(lo[i], hi[i], result[i])
++  }
++  return result
+ }
+ 
+-proto.update = function(array, offset) {
+-  if(typeof offset !== "number") {
+-    offset = -1
+-  }
+-  this.bind()
+-  if(typeof array === "object" && typeof array.shape !== "undefined") { //ndarray
+-    var dtype = array.dtype
+-    if(SUPPORTED_TYPES.indexOf(dtype) < 0) {
+-      dtype = "float32"
++proto.dcurve = function(t) {
++  var time     = this._time
++  var n        = time.length
++  var idx      = bsearch.le(time, t)
++  var result   = this._scratch[0]
++  var state    = this._state
++  var velocity = this._velocity
++  var d        = this.dimension
++  if(idx >= n-1) {
++    var ptr = state.length-1
++    var tf = t - time[n-1]
++    for(var i=0; i<d; ++i, --ptr) {
++      result[i] = velocity[ptr]
+     }
+-    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
+-      var ext = gl.getExtension('OES_element_index_uint')
+-      if(ext && dtype !== "uint16") {
+-        dtype = "uint32"
+-      } else {
+-        dtype = "uint16"
+-      }
++  } else {
++    var ptr = d * (idx+1) - 1
++    var t0 = time[idx]
++    var t1 = time[idx+1]
++    var dt = (t1 - t0) || 1.0
++    var x0 = this._scratch[1]
++    var x1 = this._scratch[2]
++    var v0 = this._scratch[3]
++    var v1 = this._scratch[4]
++    var steady = true
++    for(var i=0; i<d; ++i, --ptr) {
++      x0[i] = state[ptr]
++      v0[i] = velocity[ptr] * dt
++      x1[i] = state[ptr+d]
++      v1[i] = velocity[ptr+d] * dt
++      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
+     }
+-    if(dtype === array.dtype && isPacked(array.shape, array.stride)) {
+-      if(array.offset === 0 && array.data.length === array.shape[0]) {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data, offset)
+-      } else {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data.subarray(array.offset, array.shape[0]), offset)
++    if(steady) {
++      for(var i=0; i<d; ++i) {
++        result[i] = 0.0
+       }
+     } else {
+-      var tmp = pool.malloc(array.size, dtype)
+-      var ndt = ndarray(tmp, array.shape)
+-      ops.assign(ndt, array)
+-      if(offset < 0) {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp, offset)
+-      } else {
+-        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp.subarray(0, array.size), offset)
++      cubicHermite.derivative(x0, v0, x1, v1, (t-t0)/dt, result)
++      for(var i=0; i<d; ++i) {
++        result[i] /= dt
+       }
+-      pool.free(tmp)
+-    }
+-  } else if(Array.isArray(array)) { //Vanilla array
+-    var t
+-    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
+-      t = makeScratchTypeArray(array, "uint16")
+-    } else {
+-      t = makeScratchTypeArray(array, "float32")
+-    }
+-    if(offset < 0) {
+-      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t, offset)
+-    } else {
+-      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t.subarray(0, array.length), offset)
+-    }
+-    pool.free(t)
+-  } else if(typeof array === "object" && typeof array.length === "number") { //Typed array
+-    this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array, offset)
+-  } else if(typeof array === "number" || array === undefined) { //Number/default
+-    if(offset >= 0) {
+-      throw new Error("gl-buffer: Cannot specify offset when resizing buffer")
+     }
+-    array = array | 0
+-    if(array <= 0) {
+-      array = 1
++  }
++  return result
++}
++
++proto.lastT = function() {
++  var time = this._time
++  return time[time.length-1]
++}
++
++proto.stable = function() {
++  var velocity = this._velocity
++  var ptr = velocity.length
++  for(var i=this.dimension-1; i>=0; --i) {
++    if(velocity[--ptr]) {
++      return false
+     }
+-    this.gl.bufferData(this.type, array|0, this.usage)
+-    this.length = array
+-  } else { //Error, case should not happen
+-    throw new Error("gl-buffer: Invalid data type")
+   }
++  return true
+ }
+ 
+-function createBuffer(gl, data, type, usage) {
+-  type = type || gl.ARRAY_BUFFER
+-  usage = usage || gl.DYNAMIC_DRAW
+-  if(type !== gl.ARRAY_BUFFER && type !== gl.ELEMENT_ARRAY_BUFFER) {
+-    throw new Error("gl-buffer: Invalid type for webgl buffer, must be either gl.ARRAY_BUFFER or gl.ELEMENT_ARRAY_BUFFER")
++proto.jump = function(t) {
++  var t0 = this.lastT()
++  var d  = this.dimension
++  if(t < t0 || arguments.length !== d+1) {
++    return
+   }
+-  if(usage !== gl.DYNAMIC_DRAW && usage !== gl.STATIC_DRAW && usage !== gl.STREAM_DRAW) {
+-    throw new Error("gl-buffer: Invalid usage for buffer, must be either gl.DYNAMIC_DRAW, gl.STATIC_DRAW or gl.STREAM_DRAW")
++  var state     = this._state
++  var velocity  = this._velocity
++  var ptr       = state.length-this.dimension
++  var bounds    = this.bounds
++  var lo        = bounds[0]
++  var hi        = bounds[1]
++  this._time.push(t0, t)
++  for(var j=0; j<2; ++j) {
++    for(var i=0; i<d; ++i) {
++      state.push(state[ptr++])
++      velocity.push(0)
++    }
++  }
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
++    velocity.push(0)
+   }
+-  var handle = gl.createBuffer()
+-  var result = new GLBuffer(gl, type, handle, 0, usage)
+-  result.update(data)
+-  return result
+ }
+ 
+-module.exports = createBuffer
+-
+-},{"ndarray":433,"ndarray-ops":432,"typedarray-pool":458}],125:[function(require,module,exports){
+-'use strict'
+-
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var pool = require('typedarray-pool')
+-var shaders = require('./lib/shaders')
+-
+-module.exports = createError2D
+-
+-var WEIGHTS = [
+-  // x-error bar
+-  [1, 0, 0, 1, 0, 0],
+-  [1, 0, 0, -1, 0, 0],
+-  [-1, 0, 0, -1, 0, 0],
+-
+-  [-1, 0, 0, -1, 0, 0],
+-  [-1, 0, 0, 1, 0, 0],
+-  [1, 0, 0, 1, 0, 0],
+-
+-  // x-error right cap
+-  [1, 0, -1, 0, 0, 1],
+-  [1, 0, -1, 0, 0, -1],
+-  [1, 0, 1, 0, 0, -1],
+-
+-  [1, 0, 1, 0, 0, -1],
+-  [1, 0, 1, 0, 0, 1],
+-  [1, 0, -1, 0, 0, 1],
+-
+-  // x-error left cap
+-  [-1, 0, -1, 0, 0, 1],
+-  [-1, 0, -1, 0, 0, -1],
+-  [-1, 0, 1, 0, 0, -1],
+-
+-  [-1, 0, 1, 0, 0, -1],
+-  [-1, 0, 1, 0, 0, 1],
+-  [-1, 0, -1, 0, 0, 1],
+-
+-  // y-error bar
+-  [0, 1, 1, 0, 0, 0],
+-  [0, 1, -1, 0, 0, 0],
+-  [0, -1, -1, 0, 0, 0],
+-
+-  [0, -1, -1, 0, 0, 0],
+-  [0, 1, 1, 0, 0, 0],
+-  [0, -1, 1, 0, 0, 0],
+-
+-  // y-error top cap
+-  [0, 1, 0, -1, 1, 0],
+-  [0, 1, 0, -1, -1, 0],
+-  [0, 1, 0, 1, -1, 0],
+-
+-  [0, 1, 0, 1, 1, 0],
+-  [0, 1, 0, -1, 1, 0],
+-  [0, 1, 0, 1, -1, 0],
+-
+-  // y-error bottom cap
+-  [0, -1, 0, -1, 1, 0],
+-  [0, -1, 0, -1, -1, 0],
+-  [0, -1, 0, 1, -1, 0],
+-
+-  [0, -1, 0, 1, 1, 0],
+-  [0, -1, 0, -1, 1, 0],
+-  [0, -1, 0, 1, -1, 0]
+-]
+-
+-function GLError2D (plot, shader, buffer) {
+-  this.plot = plot
+-
+-  this.shader = shader
+-  this.buffer = buffer
+-
+-  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
+-
+-  this.numPoints = 0
+-
+-  this.color = [0, 0, 0, 1]
++proto.push = function(t) {
++  var t0 = this.lastT()
++  var d  = this.dimension
++  if(t < t0 || arguments.length !== d+1) {
++    return
++  }
++  var state     = this._state
++  var velocity  = this._velocity
++  var ptr       = state.length-this.dimension
++  var dt        = t - t0
++  var bounds    = this.bounds
++  var lo        = bounds[0]
++  var hi        = bounds[1]
++  var sf        = (dt > 1e-6) ? 1/dt : 0
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    var xc = clamp(lo[i-1], hi[i-1], arguments[i])
++    state.push(xc)
++    velocity.push((xc - state[ptr++]) * sf)
++  }
+ }
+ 
+-var proto = GLError2D.prototype
+-
+-proto.draw = (function () {
+-  var MATRIX = [
+-    1, 0, 0,
+-    0, 1, 0,
+-    0, 0, 1
+-  ]
+-
+-  var PIXEL_SCALE = [1, 1]
+-
+-  return function () {
+-    var plot = this.plot
+-    var shader = this.shader
+-    var buffer = this.buffer
+-    var bounds = this.bounds
+-    var numPoints = this.numPoints
+-
+-    if (!numPoints) {
+-      return
+-    }
+-
+-    var gl = plot.gl
+-    var dataBox = plot.dataBox
+-    var viewBox = plot.viewBox
+-    var pixelRatio = plot.pixelRatio
++proto.set = function(t) {
++  var d = this.dimension
++  if(t < this.lastT() || arguments.length !== d+1) {
++    return
++  }
++  var state     = this._state
++  var velocity  = this._velocity
++  var bounds    = this.bounds
++  var lo        = bounds[0]
++  var hi        = bounds[1]
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
++    velocity.push(0)
++  }
++}
+ 
+-    var boundX = bounds[2] - bounds[0]
+-    var boundY = bounds[3] - bounds[1]
+-    var dataX = dataBox[2] - dataBox[0]
+-    var dataY = dataBox[3] - dataBox[1]
++proto.move = function(t) {
++  var t0 = this.lastT()
++  var d  = this.dimension
++  if(t <= t0 || arguments.length !== d+1) {
++    return
++  }
++  var state    = this._state
++  var velocity = this._velocity
++  var statePtr = state.length - this.dimension
++  var bounds   = this.bounds
++  var lo       = bounds[0]
++  var hi       = bounds[1]
++  var dt       = t - t0
++  var sf       = (dt > 1e-6) ? 1/dt : 0.0
++  this._time.push(t)
++  for(var i=d; i>0; --i) {
++    var dx = arguments[i]
++    state.push(clamp(lo[i-1], hi[i-1], state[statePtr++] + dx))
++    velocity.push(dx * sf)
++  }
++}
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++proto.idle = function(t) {
++  var t0 = this.lastT()
++  if(t < t0) {
++    return
++  }
++  var d        = this.dimension
++  var state    = this._state
++  var velocity = this._velocity
++  var statePtr = state.length-d
++  var bounds   = this.bounds
++  var lo       = bounds[0]
++  var hi       = bounds[1]
++  var dt       = t - t0
++  this._time.push(t)
++  for(var i=d-1; i>=0; --i) {
++    state.push(clamp(lo[i], hi[i], state[statePtr] + dt * velocity[statePtr]))
++    velocity.push(0)
++    statePtr += 1
++  }
++}
+ 
+-    var screenX = viewBox[2] - viewBox[0]
+-    var screenY = viewBox[3] - viewBox[1]
++function getZero(d) {
++  var result = new Array(d)
++  for(var i=0; i<d; ++i) {
++    result[i] = 0.0
++  }
++  return result
++}
+ 
+-    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
+-    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
++function createFilteredVector(initState, initVelocity, initTime) {
++  switch(arguments.length) {
++    case 0:
++      return new FilteredVector([0], [0], 0)
++    case 1:
++      if(typeof initState === 'number') {
++        var zero = getZero(initState)
++        return new FilteredVector(zero, zero, 0)
++      } else {
++        return new FilteredVector(initState, getZero(initState.length), 0)
++      }
++    case 2:
++      if(typeof initVelocity === 'number') {
++        var zero = getZero(initState.length)
++        return new FilteredVector(initState, zero, +initVelocity)
++      } else {
++        initTime = 0
++      }
++    case 3:
++      if(initState.length !== initVelocity.length) {
++        throw new Error('state and velocity lengths must match')
++      }
++      return new FilteredVector(initState, initVelocity, initTime)
++  }
++}
+ 
+-    buffer.bind()
+-    shader.bind()
++},{"binary-search-bounds":48,"cubic-hermite":85}],101:[function(require,module,exports){
++"use strict"
+ 
+-    shader.uniforms.viewTransform = MATRIX
+-    shader.uniforms.pixelScale = PIXEL_SCALE
+-    shader.uniforms.color = this.color
++module.exports = createRBTree
+ 
+-    shader.attributes.position.pointer(
+-      gl.FLOAT,
+-      false,
+-      16,
+-      0)
++var RED   = 0
++var BLACK = 1
+ 
+-    shader.attributes.pixelOffset.pointer(
+-      gl.FLOAT,
+-      false,
+-      16,
+-      8)
++function RBNode(color, key, value, left, right, count) {
++  this._color = color
++  this.key = key
++  this.value = value
++  this.left = left
++  this.right = right
++  this._count = count
++}
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, numPoints * WEIGHTS.length)
+-  }
+-})()
++function cloneNode(node) {
++  return new RBNode(node._color, node.key, node.value, node.left, node.right, node._count)
++}
+ 
+-proto.drawPick = function (offset) { return offset }
+-proto.pick = function (x, y) {
+-  return null
++function repaint(color, node) {
++  return new RBNode(color, node.key, node.value, node.left, node.right, node._count)
+ }
+ 
+-proto.update = function (options) {
+-  options = options || {}
++function recount(node) {
++  node._count = 1 + (node.left ? node.left._count : 0) + (node.right ? node.right._count : 0)
++}
+ 
+-  var i, x, y
++function RedBlackTree(compare, root) {
++  this._compare = compare
++  this.root = root
++}
+ 
+-  var positions = options.positions || []
+-  var errors = options.errors || []
++var proto = RedBlackTree.prototype
+ 
+-  var lineWidth = 1
+-  if ('lineWidth' in options) {
+-    lineWidth = +options.lineWidth
++Object.defineProperty(proto, "keys", {
++  get: function() {
++    var result = []
++    this.forEach(function(k,v) {
++      result.push(k)
++    })
++    return result
+   }
++})
+ 
+-  var capSize = 5
+-  if ('capSize' in options) {
+-    capSize = +options.capSize
++Object.defineProperty(proto, "values", {
++  get: function() {
++    var result = []
++    this.forEach(function(k,v) {
++      result.push(v)
++    })
++    return result
+   }
++})
+ 
+-  this.color = (options.color || [0, 0, 0, 1]).slice()
+-
+-  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
+-
+-  var numPoints = this.numPoints = positions.length >> 1
+-  for (i = 0; i < numPoints; ++i) {
+-    x = positions[i * 2]
+-    y = positions[i * 2 + 1]
+-
+-    bounds[0] = Math.min(x, bounds[0])
+-    bounds[1] = Math.min(y, bounds[1])
+-    bounds[2] = Math.max(x, bounds[2])
+-    bounds[3] = Math.max(y, bounds[3])
++//Returns the number of nodes in the tree
++Object.defineProperty(proto, "length", {
++  get: function() {
++    if(this.root) {
++      return this.root._count
++    }
++    return 0
+   }
+-  if (bounds[2] === bounds[0]) {
+-    bounds[2] += 1
++})
++
++//Insert a new item into the tree
++proto.insert = function(key, value) {
++  var cmp = this._compare
++  //Find point to insert new node at
++  var n = this.root
++  var n_stack = []
++  var d_stack = []
++  while(n) {
++    var d = cmp(key, n.key)
++    n_stack.push(n)
++    d_stack.push(d)
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
+   }
+-  if (bounds[3] === bounds[1]) {
+-    bounds[3] += 1
++  //Rebuild path to leaf node
++  n_stack.push(new RBNode(RED, key, value, null, null, 1))
++  for(var s=n_stack.length-2; s>=0; --s) {
++    var n = n_stack[s]
++    if(d_stack[s] <= 0) {
++      n_stack[s] = new RBNode(n._color, n.key, n.value, n_stack[s+1], n.right, n._count+1)
++    } else {
++      n_stack[s] = new RBNode(n._color, n.key, n.value, n.left, n_stack[s+1], n._count+1)
++    }
+   }
+-  var sx = 1.0 / (bounds[2] - bounds[0])
+-  var sy = 1.0 / (bounds[3] - bounds[1])
+-  var tx = bounds[0]
+-  var ty = bounds[1]
+-
+-  var bufferData = pool.mallocFloat32(numPoints * WEIGHTS.length * 4)
+-  var ptr = 0
+-  for (i = 0; i < numPoints; ++i) {
+-    x = positions[2 * i]
+-    y = positions[2 * i + 1]
+-    var ex0 = errors[4 * i]
+-    var ex1 = errors[4 * i + 1]
+-    var ey0 = errors[4 * i + 2]
+-    var ey1 = errors[4 * i + 3]
+-
+-    for (var j = 0; j < WEIGHTS.length; ++j) {
+-      var w = WEIGHTS[j]
+-
+-      var dx = w[0]
+-      var dy = w[1]
+-
+-      if (dx < 0) {
+-        dx *= ex0
+-      } else if (dx > 0) {
+-        dx *= ex1
++  //Rebalance tree using rotations
++  //console.log("start insert", key, d_stack)
++  for(var s=n_stack.length-1; s>1; --s) {
++    var p = n_stack[s-1]
++    var n = n_stack[s]
++    if(p._color === BLACK || n._color === BLACK) {
++      break
++    }
++    var pp = n_stack[s-2]
++    if(pp.left === p) {
++      if(p.left === n) {
++        var y = pp.right
++        if(y && y._color === RED) {
++          //console.log("LLr")
++          p._color = BLACK
++          pp.right = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("LLb")
++          pp._color = RED
++          pp.left = p.right
++          p._color = BLACK
++          p.right = pp
++          n_stack[s-2] = p
++          n_stack[s-1] = n
++          recount(pp)
++          recount(p)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.left === pp) {
++              ppp.left = p
++            } else {
++              ppp.right = p
++            }
++          }
++          break
++        }
++      } else {
++        var y = pp.right
++        if(y && y._color === RED) {
++          //console.log("LRr")
++          p._color = BLACK
++          pp.right = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("LRb")
++          p.right = n.left
++          pp._color = RED
++          pp.left = n.right
++          n._color = BLACK
++          n.left = p
++          n.right = pp
++          n_stack[s-2] = n
++          n_stack[s-1] = p
++          recount(pp)
++          recount(p)
++          recount(n)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.left === pp) {
++              ppp.left = n
++            } else {
++              ppp.right = n
++            }
++          }
++          break
++        }
+       }
+-
+-      if (dy < 0) {
+-        dy *= ey0
+-      } else if (dy > 0) {
+-        dy *= ey1
++    } else {
++      if(p.right === n) {
++        var y = pp.left
++        if(y && y._color === RED) {
++          //console.log("RRr", y.key)
++          p._color = BLACK
++          pp.left = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("RRb")
++          pp._color = RED
++          pp.right = p.left
++          p._color = BLACK
++          p.left = pp
++          n_stack[s-2] = p
++          n_stack[s-1] = n
++          recount(pp)
++          recount(p)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.right === pp) {
++              ppp.right = p
++            } else {
++              ppp.left = p
++            }
++          }
++          break
++        }
++      } else {
++        var y = pp.left
++        if(y && y._color === RED) {
++          //console.log("RLr")
++          p._color = BLACK
++          pp.left = repaint(BLACK, y)
++          pp._color = RED
++          s -= 1
++        } else {
++          //console.log("RLb")
++          p.left = n.right
++          pp._color = RED
++          pp.right = n.left
++          n._color = BLACK
++          n.right = p
++          n.left = pp
++          n_stack[s-2] = n
++          n_stack[s-1] = p
++          recount(pp)
++          recount(p)
++          recount(n)
++          if(s >= 3) {
++            var ppp = n_stack[s-3]
++            if(ppp.right === pp) {
++              ppp.right = n
++            } else {
++              ppp.left = n
++            }
++          }
++          break
++        }
+       }
+-
+-      bufferData[ptr++] = sx * ((x - tx) + dx)
+-      bufferData[ptr++] = sy * ((y - ty) + dy)
+-      bufferData[ptr++] = lineWidth * w[2] + (capSize + lineWidth) * w[4]
+-      bufferData[ptr++] = lineWidth * w[3] + (capSize + lineWidth) * w[5]
+     }
+   }
+-  this.buffer.update(bufferData)
+-  pool.free(bufferData)
+-}
+-
+-proto.dispose = function () {
+-  this.plot.removeObject(this)
+-  this.shader.dispose()
+-  this.buffer.dispose()
++  //Return new tree
++  n_stack[0]._color = BLACK
++  return new RedBlackTree(cmp, n_stack[0])
+ }
+ 
+-function createError2D (plot, options) {
+-  var shader = createShader(plot.gl, shaders.vertex, shaders.fragment)
+-  var buffer = createBuffer(plot.gl)
+-
+-  var errorbars = new GLError2D(plot, shader, buffer)
+-
+-  errorbars.update(options)
+-
+-  plot.addObject(errorbars)
+ 
+-  return errorbars
++//Visit all nodes inorder
++function doVisitFull(visit, node) {
++  if(node.left) {
++    var v = doVisitFull(visit, node.left)
++    if(v) { return v }
++  }
++  var v = visit(node.key, node.value)
++  if(v) { return v }
++  if(node.right) {
++    return doVisitFull(visit, node.right)
++  }
+ }
+ 
+-},{"./lib/shaders":126,"gl-buffer":124,"gl-shader":203,"typedarray-pool":458}],126:[function(require,module,exports){
+-
+-
+-module.exports = {
+-  vertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 pixelOffset;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvoid main() {\n  vec3 scrPosition = viewTransform * vec3(position, 1);\n  gl_Position = vec4(\n    scrPosition.xy + scrPosition.z * pixelScale * pixelOffset,\n    0,\n    scrPosition.z);\n}\n",
+-  fragment: "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
++//Visit half nodes in order
++function doVisitHalf(lo, compare, visit, node) {
++  var l = compare(lo, node.key)
++  if(l <= 0) {
++    if(node.left) {
++      var v = doVisitHalf(lo, compare, visit, node.left)
++      if(v) { return v }
++    }
++    var v = visit(node.key, node.value)
++    if(v) { return v }
++  }
++  if(node.right) {
++    return doVisitHalf(lo, compare, visit, node.right)
++  }
+ }
+ 
+-},{}],127:[function(require,module,exports){
+-'use strict'
++//Visit all nodes within a range
++function doVisit(lo, hi, compare, visit, node) {
++  var l = compare(lo, node.key)
++  var h = compare(hi, node.key)
++  var v
++  if(l <= 0) {
++    if(node.left) {
++      v = doVisit(lo, hi, compare, visit, node.left)
++      if(v) { return v }
++    }
++    if(h > 0) {
++      v = visit(node.key, node.value)
++      if(v) { return v }
++    }
++  }
++  if(h > 0 && node.right) {
++    return doVisit(lo, hi, compare, visit, node.right)
++  }
++}
+ 
+-module.exports = createErrorBars
+ 
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var createShader  = require('./shaders/index')
++proto.forEach = function rbTreeForEach(visit, lo, hi) {
++  if(!this.root) {
++    return
++  }
++  switch(arguments.length) {
++    case 1:
++      return doVisitFull(visit, this.root)
++    break
+ 
+-var IDENTITY = [1,0,0,0,
+-                0,1,0,0,
+-                0,0,1,0,
+-                0,0,0,1]
++    case 2:
++      return doVisitHalf(lo, this._compare, visit, this.root)
++    break
+ 
+-function ErrorBars(gl, buffer, vao, shader) {
+-  this.gl           = gl
+-  this.shader       = shader
+-  this.buffer       = buffer
+-  this.vao          = vao
+-  this.pixelRatio   = 1
+-  this.bounds       = [[ Infinity, Infinity, Infinity], [-Infinity,-Infinity,-Infinity]]
+-  this.clipBounds   = [[-Infinity,-Infinity,-Infinity], [ Infinity, Infinity, Infinity]]
+-  this.lineWidth    = [1,1,1]
+-  this.capSize      = [10,10,10]
+-  this.lineCount    = [0,0,0]
+-  this.lineOffset   = [0,0,0]
+-  this.opacity      = 1
++    case 3:
++      if(this._compare(lo, hi) >= 0) {
++        return
++      }
++      return doVisit(lo, hi, this._compare, visit, this.root)
++    break
++  }
+ }
+ 
+-var proto = ErrorBars.prototype
++//First item in list
++Object.defineProperty(proto, "begin", {
++  get: function() {
++    var stack = []
++    var n = this.root
++    while(n) {
++      stack.push(n)
++      n = n.left
++    }
++    return new RedBlackTreeIterator(this, stack)
++  }
++})
+ 
+-proto.isOpaque = function() {
+-  return this.opacity >= 1
+-}
++//Last item in list
++Object.defineProperty(proto, "end", {
++  get: function() {
++    var stack = []
++    var n = this.root
++    while(n) {
++      stack.push(n)
++      n = n.right
++    }
++    return new RedBlackTreeIterator(this, stack)
++  }
++})
+ 
+-proto.isTransparent = function() {
+-  return this.opacity < 1
++//Find the ith item in the tree
++proto.at = function(idx) {
++  if(idx < 0) {
++    return new RedBlackTreeIterator(this, [])
++  }
++  var n = this.root
++  var stack = []
++  while(true) {
++    stack.push(n)
++    if(n.left) {
++      if(idx < n.left._count) {
++        n = n.left
++        continue
++      }
++      idx -= n.left._count
++    }
++    if(!idx) {
++      return new RedBlackTreeIterator(this, stack)
++    }
++    idx -= 1
++    if(n.right) {
++      if(idx >= n.right._count) {
++        break
++      }
++      n = n.right
++    } else {
++      break
++    }
++  }
++  return new RedBlackTreeIterator(this, [])
+ }
+ 
+-proto.drawTransparent = proto.draw = function(cameraParams) {
+-  var gl = this.gl
+-  var uniforms        = this.shader.uniforms
+-
+-  this.shader.bind()
+-  var view       = uniforms.view       = cameraParams.view       || IDENTITY
+-  var projection = uniforms.projection = cameraParams.projection || IDENTITY
+-  uniforms.model      = cameraParams.model      || IDENTITY
+-  uniforms.clipBounds = this.clipBounds
+-  uniforms.opacity    = this.opacity
+-
+-
+-  var cx = view[12]
+-  var cy = view[13]
+-  var cz = view[14]
+-  var cw = view[15]
+-  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
++proto.ge = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d <= 0) {
++      last_ptr = stack.length
++    }
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
++}
+ 
++proto.gt = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d < 0) {
++      last_ptr = stack.length
++    }
++    if(d < 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
++  }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
++}
+ 
+-  this.vao.bind()
+-  for(var i=0; i<3; ++i) {
+-    gl.lineWidth(this.lineWidth[i])
+-    uniforms.capSize = this.capSize[i] * pixelScaleF
+-    gl.drawArrays(gl.LINES, this.lineOffset[i], this.lineCount[i])
++proto.lt = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d > 0) {
++      last_ptr = stack.length
++    }
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
+   }
+-  this.vao.unbind()
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
+ }
+ 
+-function updateBounds(bounds, point) {
+-  for(var i=0; i<3; ++i) {
+-    bounds[0][i] = Math.min(bounds[0][i], point[i])
+-    bounds[1][i] = Math.max(bounds[1][i], point[i])
++proto.le = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  var last_ptr = 0
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d >= 0) {
++      last_ptr = stack.length
++    }
++    if(d < 0) {
++      n = n.left
++    } else {
++      n = n.right
++    }
+   }
++  stack.length = last_ptr
++  return new RedBlackTreeIterator(this, stack)
+ }
+ 
+-var FACE_TABLE = (function(){
+-  var table = new Array(3)
+-  for(var d=0; d<3; ++d) {
+-    var row = []
+-    for(var j=1; j<=2; ++j) {
+-      for(var s=-1; s<=1; s+=2) {
+-        var u = (j+d) % 3
+-        var y = [0,0,0]
+-        y[u] = s
+-        row.push(y)
+-      }
++//Finds the item with key if it exists
++proto.find = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  var stack = []
++  while(n) {
++    var d = cmp(key, n.key)
++    stack.push(n)
++    if(d === 0) {
++      return new RedBlackTreeIterator(this, stack)
++    }
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
+-    table[d] = row
+   }
+-  return table
+-})()
+-
++  return new RedBlackTreeIterator(this, [])
++}
+ 
+-function emitFace(verts, x, c, d) {
+-  var offsets = FACE_TABLE[d]
+-  for(var i=0; i<offsets.length; ++i) {
+-    var o = offsets[i]
+-    verts.push(x[0], x[1], x[2],
+-               c[0], c[1], c[2], c[3],
+-               o[0], o[1], o[2])
++//Removes item with key from tree
++proto.remove = function(key) {
++  var iter = this.find(key)
++  if(iter) {
++    return iter.remove()
+   }
+-  return offsets.length
++  return this
+ }
+ 
+-proto.update = function(options) {
+-  options = options || {}
+-
+-  if('lineWidth' in options) {
+-    this.lineWidth = options.lineWidth
+-    if(!Array.isArray(this.lineWidth)) {
+-      this.lineWidth = [this.lineWidth, this.lineWidth, this.lineWidth]
++//Returns the item at `key`
++proto.get = function(key) {
++  var cmp = this._compare
++  var n = this.root
++  while(n) {
++    var d = cmp(key, n.key)
++    if(d === 0) {
++      return n.value
+     }
+-  }
+-  if('capSize' in options) {
+-    this.capSize = options.capSize
+-    if(!Array.isArray(this.capSize)) {
+-      this.capSize = [this.capSize, this.capSize, this.capSize]
++    if(d <= 0) {
++      n = n.left
++    } else {
++      n = n.right
+     }
+   }
+-  if('opacity' in options) {
+-    this.opacity = options.opacity
+-  }
++  return
++}
+ 
+-  var color    = options.color || [[0,0,0],[0,0,0],[0,0,0]]
+-  var position = options.position
+-  var error    = options.error
+-  if(!Array.isArray(color[0])) {
+-    color = [color,color,color]
+-  }
++//Iterator for red black tree
++function RedBlackTreeIterator(tree, stack) {
++  this.tree = tree
++  this._stack = stack
++}
+ 
+-  if(position && error) {
++var iproto = RedBlackTreeIterator.prototype
+ 
+-    var verts       = []
+-    var n           = position.length
+-    var vertexCount = 0
+-    this.bounds     = [[ Infinity, Infinity, Infinity],
+-                       [-Infinity,-Infinity,-Infinity]]
+-    this.lineCount  = [0,0,0]
++//Test if iterator is valid
++Object.defineProperty(iproto, "valid", {
++  get: function() {
++    return this._stack.length > 0
++  }
++})
+ 
+-    //Build geometry for lines
+-    for(var j=0; j<3; ++j) {
+-      this.lineOffset[j] = vertexCount
++//Node of the iterator
++Object.defineProperty(iproto, "node", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1]
++    }
++    return null
++  },
++  enumerable: true
++})
+ 
+-i_loop:
+-      for(var i=0; i<n; ++i) {
+-        var p = position[i]
++//Makes a copy of an iterator
++iproto.clone = function() {
++  return new RedBlackTreeIterator(this.tree, this._stack.slice())
++}
+ 
+-        for(var k=0; k<3; ++k) {
+-          if(isNaN(p[k]) || !isFinite(p[k])) {
+-            continue i_loop
++//Swaps two nodes
++function swapNode(n, v) {
++  n.key = v.key
++  n.value = v.value
++  n.left = v.left
++  n.right = v.right
++  n._color = v._color
++  n._count = v._count
++}
++
++//Fix up a double black node in a tree
++function fixDoubleBlack(stack) {
++  var n, p, s, z
++  for(var i=stack.length-1; i>=0; --i) {
++    n = stack[i]
++    if(i === 0) {
++      n._color = BLACK
++      return
++    }
++    //console.log("visit node:", n.key, i, stack[i].key, stack[i-1].key)
++    p = stack[i-1]
++    if(p.left === n) {
++      //console.log("left child")
++      s = p.right
++      if(s.right && s.right._color === RED) {
++        //console.log("case 1: right sibling child red")
++        s = p.right = cloneNode(s)
++        z = s.right = cloneNode(s.right)
++        p.right = s.left
++        s.left = p
++        s.right = z
++        s._color = p._color
++        n._color = BLACK
++        p._color = BLACK
++        z._color = BLACK
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = s
++          } else {
++            pp.right = s
+           }
+         }
+-
+-        var e = error[i]
+-        var c = color[j]
+-        if(Array.isArray(c[0])) {
+-          c = color[i]
++        stack[i-1] = s
++        return
++      } else if(s.left && s.left._color === RED) {
++        //console.log("case 1: left sibling child red")
++        s = p.right = cloneNode(s)
++        z = s.left = cloneNode(s.left)
++        p.right = z.left
++        s.left = z.right
++        z.left = p
++        z.right = s
++        z._color = p._color
++        p._color = BLACK
++        s._color = BLACK
++        n._color = BLACK
++        recount(p)
++        recount(s)
++        recount(z)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = z
++          } else {
++            pp.right = z
++          }
+         }
+-        if(c.length === 3) {
+-          c = [c[0], c[1], c[2], 1]
++        stack[i-1] = z
++        return
++      }
++      if(s._color === BLACK) {
++        if(p._color === RED) {
++          //console.log("case 2: black sibling, red parent", p.right.value)
++          p._color = BLACK
++          p.right = repaint(RED, s)
++          return
++        } else {
++          //console.log("case 2: black sibling, black parent", p.right.value)
++          p.right = repaint(RED, s)
++          continue  
+         }
+-        if(isNaN(e[0][j]) || isNaN(e[1][j])) {
+-          continue
++      } else {
++        //console.log("case 3: red sibling")
++        s = cloneNode(s)
++        p.right = s.left
++        s.left = p
++        s._color = p._color
++        p._color = RED
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.left === p) {
++            pp.left = s
++          } else {
++            pp.right = s
++          }
+         }
+-        if(e[0][j] < 0) {
+-          var x = p.slice()
+-          x[j] += e[0][j]
+-          verts.push(p[0], p[1], p[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0,
+-                     x[0], x[1], x[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0)
+-          updateBounds(this.bounds, x)
+-          vertexCount += 2 + emitFace(verts, x, c, j)
++        stack[i-1] = s
++        stack[i] = p
++        if(i+1 < stack.length) {
++          stack[i+1] = n
++        } else {
++          stack.push(n)
+         }
+-        if(e[1][j] > 0) {
+-          var x = p.slice()
+-          x[j] += e[1][j]
+-          verts.push(p[0], p[1], p[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0,
+-                     x[0], x[1], x[2],
+-                     c[0], c[1], c[2], c[3],
+-                        0,    0,    0)
+-          updateBounds(this.bounds, x)
+-          vertexCount += 2 + emitFace(verts, x, c, j)
++        i = i+2
++      }
++    } else {
++      //console.log("right child")
++      s = p.left
++      if(s.left && s.left._color === RED) {
++        //console.log("case 1: left sibling child red", p.value, p._color)
++        s = p.left = cloneNode(s)
++        z = s.left = cloneNode(s.left)
++        p.left = s.right
++        s.right = p
++        s.left = z
++        s._color = p._color
++        n._color = BLACK
++        p._color = BLACK
++        z._color = BLACK
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = s
++          } else {
++            pp.left = s
++          }
++        }
++        stack[i-1] = s
++        return
++      } else if(s.right && s.right._color === RED) {
++        //console.log("case 1: right sibling child red")
++        s = p.left = cloneNode(s)
++        z = s.right = cloneNode(s.right)
++        p.left = z.right
++        s.right = z.left
++        z.right = p
++        z.left = s
++        z._color = p._color
++        p._color = BLACK
++        s._color = BLACK
++        n._color = BLACK
++        recount(p)
++        recount(s)
++        recount(z)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = z
++          } else {
++            pp.left = z
++          }
+         }
++        stack[i-1] = z
++        return
++      }
++      if(s._color === BLACK) {
++        if(p._color === RED) {
++          //console.log("case 2: black sibling, red parent")
++          p._color = BLACK
++          p.left = repaint(RED, s)
++          return
++        } else {
++          //console.log("case 2: black sibling, black parent")
++          p.left = repaint(RED, s)
++          continue  
++        }
++      } else {
++        //console.log("case 3: red sibling")
++        s = cloneNode(s)
++        p.left = s.right
++        s.right = p
++        s._color = p._color
++        p._color = RED
++        recount(p)
++        recount(s)
++        if(i > 1) {
++          var pp = stack[i-2]
++          if(pp.right === p) {
++            pp.right = s
++          } else {
++            pp.left = s
++          }
++        }
++        stack[i-1] = s
++        stack[i] = p
++        if(i+1 < stack.length) {
++          stack[i+1] = n
++        } else {
++          stack.push(n)
++        }
++        i = i+2
+       }
+-      this.lineCount[j] = vertexCount - this.lineOffset[j]
+     }
+-    this.buffer.update(verts)
+   }
+ }
+ 
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.buffer.dispose()
+-  this.vao.dispose()
+-}
+-
+-function createErrorBars(options) {
+-  var gl = options.gl
+-  var buffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-      {
+-        buffer: buffer,
+-        type:   gl.FLOAT,
+-        size:   3,
+-        offset: 0,
+-        stride: 40
+-      },
+-      {
+-        buffer: buffer,
+-        type:   gl.FLOAT,
+-        size:   4,
+-        offset: 12,
+-        stride: 40
+-      },
+-      {
+-        buffer: buffer,
+-        type:   gl.FLOAT,
+-        size:   3,
+-        offset: 28,
+-        stride: 40
+-      }
+-    ])
+-
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location    = 1
+-  shader.attributes.offset.location   = 2
+-
+-  var result = new ErrorBars(gl, buffer, vao, shader)
+-  result.update(options)
+-  return result
+-}
++//Removes item at iterator from tree
++iproto.remove = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
++    return this.tree
++  }
++  //First copy path to node
++  var cstack = new Array(stack.length)
++  var n = stack[stack.length-1]
++  cstack[cstack.length-1] = new RBNode(n._color, n.key, n.value, n.left, n.right, n._count)
++  for(var i=stack.length-2; i>=0; --i) {
++    var n = stack[i]
++    if(n.left === stack[i+1]) {
++      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
++    } else {
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++    }
++  }
+ 
+-},{"./shaders/index":128,"gl-buffer":124,"gl-vao":232}],128:[function(require,module,exports){
+-'use strict'
++  //Get node
++  n = cstack[cstack.length-1]
++  //console.log("start remove: ", n.value)
+ 
++  //If not leaf, then swap with previous node
++  if(n.left && n.right) {
++    //console.log("moving to leaf")
+ 
+-var createShader = require('gl-shader')
++    //First walk to previous leaf
++    var split = cstack.length
++    n = n.left
++    while(n.right) {
++      cstack.push(n)
++      n = n.right
++    }
++    //Copy path to leaf
++    var v = cstack[split-1]
++    cstack.push(new RBNode(n._color, v.key, v.value, n.left, n.right, n._count))
++    cstack[split-1].key = n.key
++    cstack[split-1].value = n.value
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, offset;\nattribute vec4 color;\nuniform mat4 model, view, projection;\nuniform float capSize;\nvarying vec4 fragColor;\nvarying vec3 fragPosition;\n\nvoid main() {\n  vec4 worldPosition  = model * vec4(position, 1.0);\n  worldPosition       = (worldPosition / worldPosition.w) + vec4(capSize * offset, 0.0);\n  gl_Position         = projection * view * worldPosition;\n  fragColor           = color;\n  fragPosition        = position;\n}"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\nuniform vec3 clipBounds[2];\nuniform float opacity;\nvarying vec3 fragPosition;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(fragPosition, clipBounds[0])) || any(greaterThan(fragPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = opacity * fragColor;\n}"
++    //Fix up stack
++    for(var i=cstack.length-2; i>=split; --i) {
++      n = cstack[i]
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++    }
++    cstack[split-1].left = cstack[split]
++  }
++  //console.log("stack=", cstack.map(function(v) { return v.value }))
+ 
+-module.exports = function(gl) {
+-  return createShader(gl, vertSrc, fragSrc, null, [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'offset', type: 'vec3'},
+-    {name: 'color', type: 'vec4'}
+-  ])
++  //Remove leaf node
++  n = cstack[cstack.length-1]
++  if(n._color === RED) {
++    //Easy case: removing red leaf
++    //console.log("RED leaf")
++    var p = cstack[cstack.length-2]
++    if(p.left === n) {
++      p.left = null
++    } else if(p.right === n) {
++      p.right = null
++    }
++    cstack.pop()
++    for(var i=0; i<cstack.length; ++i) {
++      cstack[i]._count--
++    }
++    return new RedBlackTree(this.tree._compare, cstack[0])
++  } else {
++    if(n.left || n.right) {
++      //Second easy case:  Single child black parent
++      //console.log("BLACK single child")
++      if(n.left) {
++        swapNode(n, n.left)
++      } else if(n.right) {
++        swapNode(n, n.right)
++      }
++      //Child must be red, so repaint it black to balance color
++      n._color = BLACK
++      for(var i=0; i<cstack.length-1; ++i) {
++        cstack[i]._count--
++      }
++      return new RedBlackTree(this.tree._compare, cstack[0])
++    } else if(cstack.length === 1) {
++      //Third easy case: root
++      //console.log("ROOT")
++      return new RedBlackTree(this.tree._compare, null)
++    } else {
++      //Hard case: Repaint n, and then do some nasty stuff
++      //console.log("BLACK leaf no children")
++      for(var i=0; i<cstack.length; ++i) {
++        cstack[i]._count--
++      }
++      var parent = cstack[cstack.length-2]
++      fixDoubleBlack(cstack)
++      //Fix up links
++      if(parent.left === n) {
++        parent.left = null
++      } else {
++        parent.right = null
++      }
++    }
++  }
++  return new RedBlackTree(this.tree._compare, cstack[0])
+ }
+ 
+-},{"gl-shader":203}],129:[function(require,module,exports){
+-'use strict'
++//Returns key
++Object.defineProperty(iproto, "key", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1].key
++    }
++    return
++  },
++  enumerable: true
++})
+ 
+-var createTexture = require('gl-texture2d')
++//Returns value
++Object.defineProperty(iproto, "value", {
++  get: function() {
++    if(this._stack.length > 0) {
++      return this._stack[this._stack.length-1].value
++    }
++    return
++  },
++  enumerable: true
++})
+ 
+-module.exports = createFBO
+ 
+-var colorAttachmentArrays = null
+-var FRAMEBUFFER_UNSUPPORTED
+-var FRAMEBUFFER_INCOMPLETE_ATTACHMENT
+-var FRAMEBUFFER_INCOMPLETE_DIMENSIONS
+-var FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
++//Returns the position of this iterator in the sorted list
++Object.defineProperty(iproto, "index", {
++  get: function() {
++    var idx = 0
++    var stack = this._stack
++    if(stack.length === 0) {
++      var r = this.tree.root
++      if(r) {
++        return r._count
++      }
++      return 0
++    } else if(stack[stack.length-1].left) {
++      idx = stack[stack.length-1].left._count
++    }
++    for(var s=stack.length-2; s>=0; --s) {
++      if(stack[s+1] === stack[s].right) {
++        ++idx
++        if(stack[s].left) {
++          idx += stack[s].left._count
++        }
++      }
++    }
++    return idx
++  },
++  enumerable: true
++})
+ 
+-function saveFBOState(gl) {
+-  var fbo = gl.getParameter(gl.FRAMEBUFFER_BINDING)
+-  var rbo = gl.getParameter(gl.RENDERBUFFER_BINDING)
+-  var tex = gl.getParameter(gl.TEXTURE_BINDING_2D)
+-  return [fbo, rbo, tex]
++//Advances iterator to next element in list
++iproto.next = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
++    return
++  }
++  var n = stack[stack.length-1]
++  if(n.right) {
++    n = n.right
++    while(n) {
++      stack.push(n)
++      n = n.left
++    }
++  } else {
++    stack.pop()
++    while(stack.length > 0 && stack[stack.length-1].right === n) {
++      n = stack[stack.length-1]
++      stack.pop()
++    }
++  }
+ }
+ 
+-function restoreFBOState(gl, data) {
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, data[0])
+-  gl.bindRenderbuffer(gl.RENDERBUFFER, data[1])
+-  gl.bindTexture(gl.TEXTURE_2D, data[2])
++//Checks if iterator is at end of tree
++Object.defineProperty(iproto, "hasNext", {
++  get: function() {
++    var stack = this._stack
++    if(stack.length === 0) {
++      return false
++    }
++    if(stack[stack.length-1].right) {
++      return true
++    }
++    for(var s=stack.length-1; s>0; --s) {
++      if(stack[s-1].left === stack[s]) {
++        return true
++      }
++    }
++    return false
++  }
++})
++
++//Update value
++iproto.update = function(value) {
++  var stack = this._stack
++  if(stack.length === 0) {
++    throw new Error("Can't update empty node!")
++  }
++  var cstack = new Array(stack.length)
++  var n = stack[stack.length-1]
++  cstack[cstack.length-1] = new RBNode(n._color, n.key, value, n.left, n.right, n._count)
++  for(var i=stack.length-2; i>=0; --i) {
++    n = stack[i]
++    if(n.left === stack[i+1]) {
++      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
++    } else {
++      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++    }
++  }
++  return new RedBlackTree(this.tree._compare, cstack[0])
+ }
+ 
+-function lazyInitColorAttachments(gl, ext) {
+-  var maxColorAttachments = gl.getParameter(ext.MAX_COLOR_ATTACHMENTS_WEBGL)
+-  colorAttachmentArrays = new Array(maxColorAttachments + 1)
+-  for(var i=0; i<=maxColorAttachments; ++i) {
+-    var x = new Array(maxColorAttachments)
+-    for(var j=0; j<i; ++j) {
+-      x[j] = gl.COLOR_ATTACHMENT0 + j
++//Moves iterator backward one element
++iproto.prev = function() {
++  var stack = this._stack
++  if(stack.length === 0) {
++    return
++  }
++  var n = stack[stack.length-1]
++  if(n.left) {
++    n = n.left
++    while(n) {
++      stack.push(n)
++      n = n.right
+     }
+-    for(var j=i; j<maxColorAttachments; ++j) {
+-      x[j] = gl.NONE
++  } else {
++    stack.pop()
++    while(stack.length > 0 && stack[stack.length-1].left === n) {
++      n = stack[stack.length-1]
++      stack.pop()
+     }
+-    colorAttachmentArrays[i] = x
+   }
+ }
+ 
+-//Throw an appropriate error
+-function throwFBOError(status) {
+-  switch(status){
+-    case FRAMEBUFFER_UNSUPPORTED:
+-      throw new Error('gl-fbo: Framebuffer unsupported')
+-    case FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
+-      throw new Error('gl-fbo: Framebuffer incomplete attachment')
+-    case FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
+-      throw new Error('gl-fbo: Framebuffer incomplete dimensions')
+-    case FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
+-      throw new Error('gl-fbo: Framebuffer incomplete missing attachment')
+-    default:
+-      throw new Error('gl-fbo: Framebuffer failed for unspecified reason')
++//Checks if iterator is at start of tree
++Object.defineProperty(iproto, "hasPrev", {
++  get: function() {
++    var stack = this._stack
++    if(stack.length === 0) {
++      return false
++    }
++    if(stack[stack.length-1].left) {
++      return true
++    }
++    for(var s=stack.length-1; s>0; --s) {
++      if(stack[s-1].right === stack[s]) {
++        return true
++      }
++    }
++    return false
+   }
+-}
++})
+ 
+-//Initialize a texture object
+-function initTexture(gl, width, height, type, format, attachment) {
+-  if(!type) {
+-    return null
++//Default comparison function
++function defaultCompare(a, b) {
++  if(a < b) {
++    return -1
+   }
+-  var result = createTexture(gl, width, height, format, type)
+-  result.magFilter = gl.NEAREST
+-  result.minFilter = gl.NEAREST
+-  result.mipSamples = 1
+-  result.bind()
+-  gl.framebufferTexture2D(gl.FRAMEBUFFER, attachment, gl.TEXTURE_2D, result.handle, 0)
+-  return result
++  if(a > b) {
++    return 1
++  }
++  return 0
+ }
+ 
+-//Initialize a render buffer object
+-function initRenderBuffer(gl, width, height, component, attachment) {
+-  var result = gl.createRenderbuffer()
+-  gl.bindRenderbuffer(gl.RENDERBUFFER, result)
+-  gl.renderbufferStorage(gl.RENDERBUFFER, component, width, height)
+-  gl.framebufferRenderbuffer(gl.FRAMEBUFFER, attachment, gl.RENDERBUFFER, result)
+-  return result
++//Build a tree
++function createRBTree(compare) {
++  return new RedBlackTree(compare || defaultCompare, null)
+ }
++},{}],102:[function(require,module,exports){
++// transliterated from the python snippet here:
++// http://en.wikipedia.org/wiki/Lanczos_approximation
+ 
+-//Rebuild the frame buffer
+-function rebuildFBO(fbo) {
++var g = 7;
++var p = [
++    0.99999999999980993,
++    676.5203681218851,
++    -1259.1392167224028,
++    771.32342877765313,
++    -176.61502916214059,
++    12.507343278686905,
++    -0.13857109526572012,
++    9.9843695780195716e-6,
++    1.5056327351493116e-7
++];
+ 
+-  //Save FBO state
+-  var state = saveFBOState(fbo.gl)
++var g_ln = 607/128;
++var p_ln = [
++    0.99999999999999709182,
++    57.156235665862923517,
++    -59.597960355475491248,
++    14.136097974741747174,
++    -0.49191381609762019978,
++    0.33994649984811888699e-4,
++    0.46523628927048575665e-4,
++    -0.98374475304879564677e-4,
++    0.15808870322491248884e-3,
++    -0.21026444172410488319e-3,
++    0.21743961811521264320e-3,
++    -0.16431810653676389022e-3,
++    0.84418223983852743293e-4,
++    -0.26190838401581408670e-4,
++    0.36899182659531622704e-5
++];
+ 
+-  var gl = fbo.gl
+-  var handle = fbo.handle = gl.createFramebuffer()
+-  var width = fbo._shape[0]
+-  var height = fbo._shape[1]
+-  var numColors = fbo.color.length
+-  var ext = fbo._ext
+-  var useStencil = fbo._useStencil
+-  var useDepth = fbo._useDepth
+-  var colorType = fbo._colorType
++// Spouge approximation (suitable for large arguments)
++function lngamma(z) {
+ 
+-  //Bind the fbo
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, handle)
++    if(z < 0) return Number('0/0');
++    var x = p_ln[0];
++    for(var i = p_ln.length - 1; i > 0; --i) x += p_ln[i] / (z + i);
++    var t = z + g_ln + 0.5;
++    return .5*Math.log(2*Math.PI)+(z+.5)*Math.log(t)-t+Math.log(x)-Math.log(z);
++}
+ 
+-  //Allocate color buffers
+-  for(var i=0; i<numColors; ++i) {
+-    fbo.color[i] = initTexture(gl, width, height, colorType, gl.RGBA, gl.COLOR_ATTACHMENT0 + i)
+-  }
+-  if(numColors === 0) {
+-    fbo._color_rb = initRenderBuffer(gl, width, height, gl.RGBA4, gl.COLOR_ATTACHMENT0)
+-    if(ext) {
+-      ext.drawBuffersWEBGL(colorAttachmentArrays[0])
++module.exports = function gamma (z) {
++    if (z < 0.5) {
++        return Math.PI / (Math.sin(Math.PI * z) * gamma(1 - z));
+     }
+-  } else if(numColors > 1) {
+-    ext.drawBuffersWEBGL(colorAttachmentArrays[numColors])
+-  }
++    else if(z > 100) return Math.exp(lngamma(z));
++    else {
++        z -= 1;
++        var x = p[0];
++        for (var i = 1; i < g + 2; i++) {
++            x += p[i] / (z + i);
++        }
++        var t = z + g + 0.5;
+ 
+-  //Allocate depth/stencil buffers
+-  var WEBGL_depth_texture = gl.getExtension('WEBGL_depth_texture')
+-  if(WEBGL_depth_texture) {
+-    if(useStencil) {
+-      fbo.depth = initTexture(gl, width, height,
+-                          WEBGL_depth_texture.UNSIGNED_INT_24_8_WEBGL,
+-                          gl.DEPTH_STENCIL,
+-                          gl.DEPTH_STENCIL_ATTACHMENT)
+-    } else if(useDepth) {
+-      fbo.depth = initTexture(gl, width, height,
+-                          gl.UNSIGNED_SHORT,
+-                          gl.DEPTH_COMPONENT,
+-                          gl.DEPTH_ATTACHMENT)
+-    }
+-  } else {
+-    if(useDepth && useStencil) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_STENCIL, gl.DEPTH_STENCIL_ATTACHMENT)
+-    } else if(useDepth) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_COMPONENT16, gl.DEPTH_ATTACHMENT)
+-    } else if(useStencil) {
+-      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.STENCIL_INDEX, gl.STENCIL_ATTACHMENT)
++        return Math.sqrt(2 * Math.PI)
++            * Math.pow(t, z + 0.5)
++            * Math.exp(-t)
++            * x
++        ;
+     }
+-  }
+-
+-  //Check frame buffer state
+-  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
+-  if(status !== gl.FRAMEBUFFER_COMPLETE) {
+-
+-    //Release all partially allocated resources
+-    fbo._destroyed = true
++};
+ 
+-    //Release all resources
+-    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-    gl.deleteFramebuffer(fbo.handle)
+-    fbo.handle = null
+-    if(fbo.depth) {
+-      fbo.depth.dispose()
+-      fbo.depth = null
+-    }
+-    if(fbo._depth_rb) {
+-      gl.deleteRenderbuffer(fbo._depth_rb)
+-      fbo._depth_rb = null
+-    }
+-    for(var i=0; i<fbo.color.length; ++i) {
+-      fbo.color[i].dispose()
+-      fbo.color[i] = null
+-    }
+-    if(fbo._color_rb) {
+-      gl.deleteRenderbuffer(fbo._color_rb)
+-      fbo._color_rb = null
+-    }
++module.exports.log = lngamma;
+ 
+-    restoreFBOState(gl, state)
++},{}],103:[function(require,module,exports){
++var wgs84 = require('wgs84');
+ 
+-    //Throw the frame buffer error
+-    throwFBOError(status)
+-  }
++module.exports.geometry = geometry;
++module.exports.ring = ringArea;
+ 
+-  //Everything ok, let's get on with life
+-  restoreFBOState(gl, state)
++function geometry(_) {
++    if (_.type === 'Polygon') return polygonArea(_.coordinates);
++    else if (_.type === 'MultiPolygon') {
++        var area = 0;
++        for (var i = 0; i < _.coordinates.length; i++) {
++            area += polygonArea(_.coordinates[i]);
++        }
++        return area;
++    } else {
++        return null;
++    }
+ }
+ 
+-function Framebuffer(gl, width, height, colorType, numColors, useDepth, useStencil, ext) {
++function polygonArea(coords) {
++    var area = 0;
++    if (coords && coords.length > 0) {
++        area += Math.abs(ringArea(coords[0]));
++        for (var i = 1; i < coords.length; i++) {
++            area -= Math.abs(ringArea(coords[i]));
++        }
++    }
++    return area;
++}
+ 
+-  //Handle and set properties
+-  this.gl = gl
+-  this._shape = [width|0, height|0]
+-  this._destroyed = false
+-  this._ext = ext
++/**
++ * Calculate the approximate area of the polygon were it projected onto
++ *     the earth.  Note that this area will be positive if ring is oriented
++ *     clockwise, otherwise it will be negative.
++ *
++ * Reference:
++ * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
++ *     Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
++ *     Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
++ *
++ * Returns:
++ * {float} The approximate signed geodesic area of the polygon in square
++ *     meters.
++ */
+ 
+-  //Allocate buffers
+-  this.color = new Array(numColors)
+-  for(var i=0; i<numColors; ++i) {
+-    this.color[i] = null
+-  }
+-  this._color_rb = null
+-  this.depth = null
+-  this._depth_rb = null
++function ringArea(coords) {
++    var area = 0;
+ 
+-  //Save depth and stencil flags
+-  this._colorType = colorType
+-  this._useDepth = useDepth
+-  this._useStencil = useStencil
++    if (coords.length > 2) {
++        var p1, p2;
++        for (var i = 0; i < coords.length - 1; i++) {
++            p1 = coords[i];
++            p2 = coords[i + 1];
++            area += rad(p2[0] - p1[0]) * (2 + Math.sin(rad(p1[1])) + Math.sin(rad(p2[1])));
++        }
+ 
+-  //Shape vector for resizing
+-  var parent = this
+-  var shapeVector = [width|0, height|0]
+-  Object.defineProperties(shapeVector, {
+-    0: {
+-      get: function() {
+-        return parent._shape[0]
+-      },
+-      set: function(w) {
+-        return parent.width = w
+-      }
+-    },
+-    1: {
+-      get: function() {
+-        return parent._shape[1]
+-      },
+-      set: function(h) {
+-        return parent.height = h
+-      }
++        area = area * wgs84.RADIUS * wgs84.RADIUS / 2;
+     }
+-  })
+-  this._shapeVector = shapeVector
+ 
+-  //Initialize all attachments
+-  rebuildFBO(this)
++    return area;
+ }
+ 
+-var proto = Framebuffer.prototype
+-
+-function reshapeFBO(fbo, w, h) {
+-  //If fbo is invalid, just skip this
+-  if(fbo._destroyed) {
+-    throw new Error('gl-fbo: Can\'t resize destroyed FBO')
+-  }
+-
+-  //Don't resize if no change in shape
+-  if( (fbo._shape[0] === w) &&
+-      (fbo._shape[1] === h) ) {
+-    return
+-  }
++function rad(_) {
++    return _ * Math.PI / 180;
++}
+ 
+-  var gl = fbo.gl
++},{"wgs84":470}],104:[function(require,module,exports){
++var geojsonArea = require('geojson-area');
+ 
+-  //Check parameter ranges
+-  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
+-  if( w < 0 || w > maxFBOSize ||
+-      h < 0 || h > maxFBOSize) {
+-    throw new Error('gl-fbo: Can\'t resize FBO, invalid dimensions')
+-  }
++module.exports = rewind;
+ 
+-  //Update shape
+-  fbo._shape[0] = w
+-  fbo._shape[1] = h
++function rewind(gj, outer) {
++    switch ((gj && gj.type) || null) {
++        case 'FeatureCollection':
++            gj.features = gj.features.map(curryOuter(rewind, outer));
++            return gj;
++        case 'Feature':
++            gj.geometry = rewind(gj.geometry, outer);
++            return gj;
++        case 'Polygon':
++        case 'MultiPolygon':
++            return correct(gj, outer);
++        default:
++            return gj;
++    }
++}
+ 
+-  //Save framebuffer state
+-  var state = saveFBOState(gl)
++function curryOuter(a, b) {
++    return function(_) { return a(_, b); };
++}
+ 
+-  //Resize framebuffer attachments
+-  for(var i=0; i<fbo.color.length; ++i) {
+-    fbo.color[i].shape = fbo._shape
+-  }
+-  if(fbo._color_rb) {
+-    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._color_rb)
+-    gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fbo._shape[0], fbo._shape[1])
+-  }
+-  if(fbo.depth) {
+-    fbo.depth.shape = fbo._shape
+-  }
+-  if(fbo._depth_rb) {
+-    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._depth_rb)
+-    if(fbo._useDepth && fbo._useStencil) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, fbo._shape[0], fbo._shape[1])
+-    } else if(fbo._useDepth) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, fbo._shape[0], fbo._shape[1])
+-    } else if(fbo._useStencil) {
+-      gl.renderbufferStorage(gl.RENDERBUFFER, gl.STENCIL_INDEX, fbo._shape[0], fbo._shape[1])
++function correct(_, outer) {
++    if (_.type === 'Polygon') {
++        _.coordinates = correctRings(_.coordinates, outer);
++    } else if (_.type === 'MultiPolygon') {
++        _.coordinates = _.coordinates.map(curryOuter(correctRings, outer));
++    }
++    return _;
++}
++
++function correctRings(_, outer) {
++    outer = !!outer;
++    _[0] = wind(_[0], !outer);
++    for (var i = 1; i < _.length; i++) {
++        _[i] = wind(_[i], outer);
+     }
+-  }
++    return _;
++}
+ 
+-  //Check FBO status after resize, if something broke then die in a fire
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo.handle)
+-  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
+-  if(status !== gl.FRAMEBUFFER_COMPLETE) {
+-    fbo.dispose()
+-    restoreFBOState(gl, state)
+-    throwFBOError(status)
+-  }
++function wind(_, dir) {
++    return cw(_) === dir ? _ : _.reverse();
++}
+ 
+-  //Restore framebuffer state
+-  restoreFBOState(gl, state)
++function cw(_) {
++    return geojsonArea.ring(_) >= 0;
+ }
+ 
+-Object.defineProperties(proto, {
+-  'shape': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return [0,0]
+-      }
+-      return this._shapeVector
+-    },
+-    set: function(x) {
+-      if(!Array.isArray(x)) {
+-        x = [x|0, x|0]
+-      }
+-      if(x.length !== 2) {
+-        throw new Error('gl-fbo: Shape vector must be length 2')
+-      }
++},{"geojson-area":103}],105:[function(require,module,exports){
++'use strict';
+ 
+-      var w = x[0]|0
+-      var h = x[1]|0
+-      reshapeFBO(this, w, h)
++module.exports = clip;
+ 
+-      return [w, h]
+-    },
+-    enumerable: false
+-  },
+-  'width': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return 0
+-      }
+-      return this._shape[0]
+-    },
+-    set: function(w) {
+-      w = w|0
+-      reshapeFBO(this, w, this._shape[1])
+-      return w
+-    },
+-    enumerable: false
+-  },
+-  'height': {
+-    get: function() {
+-      if(this._destroyed) {
+-        return 0
+-      }
+-      return this._shape[1]
+-    },
+-    set: function(h) {
+-      h = h|0
+-      reshapeFBO(this, this._shape[0], h)
+-      return h
+-    },
+-    enumerable: false
+-  }
+-})
++var createFeature = require('./feature');
+ 
+-proto.bind = function() {
+-  if(this._destroyed) {
+-    return
+-  }
+-  var gl = this.gl
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, this.handle)
+-  gl.viewport(0, 0, this._shape[0], this._shape[1])
+-}
++/* clip features between two axis-parallel lines:
++ *     |        |
++ *  ___|___     |     /
++ * /   |   \____|____/
++ *     |        |
++ */
+ 
+-proto.dispose = function() {
+-  if(this._destroyed) {
+-    return
+-  }
+-  this._destroyed = true
+-  var gl = this.gl
+-  gl.deleteFramebuffer(this.handle)
+-  this.handle = null
+-  if(this.depth) {
+-    this.depth.dispose()
+-    this.depth = null
+-  }
+-  if(this._depth_rb) {
+-    gl.deleteRenderbuffer(this._depth_rb)
+-    this._depth_rb = null
+-  }
+-  for(var i=0; i<this.color.length; ++i) {
+-    this.color[i].dispose()
+-    this.color[i] = null
+-  }
+-  if(this._color_rb) {
+-    gl.deleteRenderbuffer(this._color_rb)
+-    this._color_rb = null
+-  }
+-}
++function clip(features, scale, k1, k2, axis, intersect, minAll, maxAll) {
+ 
+-function createFBO(gl, width, height, options) {
++    k1 /= scale;
++    k2 /= scale;
+ 
+-  //Update frame buffer error code values
+-  if(!FRAMEBUFFER_UNSUPPORTED) {
+-    FRAMEBUFFER_UNSUPPORTED = gl.FRAMEBUFFER_UNSUPPORTED
+-    FRAMEBUFFER_INCOMPLETE_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT
+-    FRAMEBUFFER_INCOMPLETE_DIMENSIONS = gl.FRAMEBUFFER_INCOMPLETE_DIMENSIONS
+-    FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+-  }
++    if (minAll >= k1 && maxAll <= k2) return features; // trivial accept
++    else if (minAll > k2 || maxAll < k1) return null; // trivial reject
+ 
+-  //Lazily initialize color attachment arrays
+-  var WEBGL_draw_buffers = gl.getExtension('WEBGL_draw_buffers')
+-  if(!colorAttachmentArrays && WEBGL_draw_buffers) {
+-    lazyInitColorAttachments(gl, WEBGL_draw_buffers)
+-  }
++    var clipped = [];
+ 
+-  //Special case: Can accept an array as argument
+-  if(Array.isArray(width)) {
+-    options = height
+-    height = width[1]|0
+-    width = width[0]|0
+-  }
++    for (var i = 0; i < features.length; i++) {
+ 
+-  if(typeof width !== 'number') {
+-    throw new Error('gl-fbo: Missing shape parameter')
+-  }
++        var feature = features[i],
++            geometry = feature.geometry,
++            type = feature.type,
++            min, max;
+ 
+-  //Validate width/height properties
+-  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
+-  if(width < 0 || width > maxFBOSize || height < 0 || height > maxFBOSize) {
+-    throw new Error('gl-fbo: Parameters are too large for FBO')
+-  }
++        min = feature.min[axis];
++        max = feature.max[axis];
+ 
+-  //Handle each option type
+-  options = options || {}
++        if (min >= k1 && max <= k2) { // trivial accept
++            clipped.push(feature);
++            continue;
++        } else if (min > k2 || max < k1) continue; // trivial reject
+ 
+-  //Figure out number of color buffers to use
+-  var numColors = 1
+-  if('color' in options) {
+-    numColors = Math.max(options.color|0, 0)
+-    if(numColors < 0) {
+-      throw new Error('gl-fbo: Must specify a nonnegative number of colors')
+-    }
+-    if(numColors > 1) {
+-      //Check if multiple render targets supported
+-      if(!WEBGL_draw_buffers) {
+-        throw new Error('gl-fbo: Multiple draw buffer extension not supported')
+-      } else if(numColors > gl.getParameter(WEBGL_draw_buffers.MAX_COLOR_ATTACHMENTS_WEBGL)) {
+-        throw new Error('gl-fbo: Context does not support ' + numColors + ' draw buffers')
+-      }
+-    }
+-  }
++        var slices = type === 1 ?
++                clipPoints(geometry, k1, k2, axis) :
++                clipGeometry(geometry, k1, k2, axis, intersect, type === 3);
+ 
+-  //Determine whether to use floating point textures
+-  var colorType = gl.UNSIGNED_BYTE
+-  var OES_texture_float = gl.getExtension('OES_texture_float')
+-  if(options.float && numColors > 0) {
+-    if(!OES_texture_float) {
+-      throw new Error('gl-fbo: Context does not support floating point textures')
+-    }
+-    colorType = gl.FLOAT
+-  } else if(options.preferFloat && numColors > 0) {
+-    if(OES_texture_float) {
+-      colorType = gl.FLOAT
++        if (slices.length) {
++            // if a feature got clipped, it will likely get clipped on the next zoom level as well,
++            // so there's no need to recalculate bboxes
++            clipped.push(createFeature(feature.tags, type, slices, feature.id));
++        }
+     }
+-  }
+ 
+-  //Check if we should use depth buffer
+-  var useDepth = true
+-  if('depth' in options) {
+-    useDepth = !!options.depth
+-  }
++    return clipped.length ? clipped : null;
++}
+ 
+-  //Check if we should use a stencil buffer
+-  var useStencil = false
+-  if('stencil' in options) {
+-    useStencil = !!options.stencil
+-  }
++function clipPoints(geometry, k1, k2, axis) {
++    var slice = [];
+ 
+-  return new Framebuffer(
+-    gl,
+-    width,
+-    height,
+-    colorType,
+-    numColors,
+-    useDepth,
+-    useStencil,
+-    WEBGL_draw_buffers)
++    for (var i = 0; i < geometry.length; i++) {
++        var a = geometry[i],
++            ak = a[axis];
++
++        if (ak >= k1 && ak <= k2) slice.push(a);
++    }
++    return slice;
+ }
+ 
+-},{"gl-texture2d":228}],130:[function(require,module,exports){
++function clipGeometry(geometry, k1, k2, axis, intersect, closed) {
+ 
++    var slices = [];
+ 
+-exports.lineVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\nvoid main() {\n  vec2 dir = (matrix * vec3(d, 0)).xy;\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = 0.5 * width *\n    normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n}\n"
+-exports.lineFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}\n"
+-exports.mitreVertex   = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 p;\n\nuniform mat3  matrix;\nuniform vec2 screenShape;\nuniform float radius;\n\nvoid main() {\n  vec3 pp = matrix * vec3(p, 1);\n  gl_Position  = vec4(pp.xy, 0, pp.z);\n  gl_PointSize = radius;\n}\n"
+-exports.mitreFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}\n"
+-exports.pickVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\nattribute vec4 pick0, pick1;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = width *\n    normalize(screenShape.yx * vec2(d.y, -d.x)) / screenShape.xy;\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}\n"
+-exports.pickFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}\n"
+-exports.fillVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 projectAxis;\nuniform float projectValue;\nuniform float depth;\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 p = base.xy / base.z;\n  if(d.y < 0.0 || (d.y == 0.0 && d.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}\n"
+-exports.fillFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
++    for (var i = 0; i < geometry.length; i++) {
+ 
+-},{}],131:[function(require,module,exports){
+-'use strict'
++        var ak = 0,
++            bk = 0,
++            b = null,
++            points = geometry[i],
++            area = points.area,
++            dist = points.dist,
++            outer = points.outer,
++            len = points.length,
++            a, j, last;
+ 
+-module.exports = createLinePlot
++        var slice = [];
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var createTexture = require('gl-texture2d')
+-var ndarray = require('ndarray')
+-var pool = require('typedarray-pool')
++        for (j = 0; j < len - 1; j++) {
++            a = b || points[j];
++            b = points[j + 1];
++            ak = bk || a[axis];
++            bk = b[axis];
+ 
+-var SHADERS = require('./lib/shaders')
++            if (ak < k1) {
+ 
+-function GLLine2D(
+-  plot,
+-  dashPattern,
+-  lineBuffer,
+-  pickBuffer,
+-  lineShader,
+-  mitreShader,
+-  fillShader,
+-  pickShader) {
++                if ((bk > k2)) { // ---|-----|-->
++                    slice.push(intersect(a, b, k1), intersect(a, b, k2));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
+ 
+-  this.plot         = plot
+-  this.dashPattern  = dashPattern
+-  this.lineBuffer   = lineBuffer
+-  this.pickBuffer   = pickBuffer
+-  this.lineShader   = lineShader
+-  this.mitreShader  = mitreShader
+-  this.fillShader   = fillShader
+-  this.pickShader   = pickShader
+-  this.usingDashes  = false
++                } else if (bk >= k1) slice.push(intersect(a, b, k1)); // ---|-->  |
+ 
+-  this.bounds     = [Infinity, Infinity, -Infinity, -Infinity]
++            } else if (ak > k2) {
+ 
+-  this.width      = 1
+-  this.color      = [0,0,1,1]
++                if ((bk < k1)) { // <--|-----|---
++                    slice.push(intersect(a, b, k2), intersect(a, b, k1));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
+ 
+-  //Fill to axes
+-  this.fill       = [false, false, false, false]
+-  this.fillColor  = [[0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1]]
++                } else if (bk <= k2) slice.push(intersect(a, b, k2)); // |  <--|---
+ 
+-  this.data       = null
+-  this.numPoints  = 0
+-  this.vertCount  = 0
++            } else {
+ 
+-  this.pickOffset = 0
++                slice.push(a);
+ 
+-  this.lodBuffer = []
+-}
++                if (bk < k1) { // <--|---  |
++                    slice.push(intersect(a, b, k1));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
+ 
+-var proto = GLLine2D.prototype
++                } else if (bk > k2) { // |  ---|-->
++                    slice.push(intersect(a, b, k2));
++                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
++                }
++                // | --> |
++            }
++        }
+ 
+-proto.draw = (function() {
+-var MATRIX = [1, 0, 0,
+-              0, 1, 0,
+-              0, 0, 1]
+-var SCREEN_SHAPE = [0,0]
+-var PX_AXIS = [1,0]
+-var NX_AXIS = [-1,0]
+-var PY_AXIS = [0,1]
+-var NY_AXIS = [0,-1]
+-return function() {
+-  var plot      = this.plot
+-  var color     = this.color
+-  var width     = this.width
+-  var numPoints = this.numPoints
+-  var bounds    = this.bounds
+-  var count     = this.vertCount
++        // add the last point
++        a = points[len - 1];
++        ak = a[axis];
++        if (ak >= k1 && ak <= k2) slice.push(a);
+ 
+-  if(!count) {
+-    return
+-  }
++        // close the polygon if its endpoints are not the same after clipping
+ 
+-  var gl        = plot.gl
+-  var viewBox   = plot.viewBox
+-  var dataBox   = plot.dataBox
+-  var pixelRatio = plot.pixelRatio
++        last = slice[slice.length - 1];
++        if (closed && last && (slice[0][0] !== last[0] || slice[0][1] !== last[1])) slice.push(slice[0]);
+ 
+-  var boundX  = bounds[2] - bounds[0]
+-  var boundY  = bounds[3] - bounds[1]
+-  var dataX   = dataBox[2] - dataBox[0]
+-  var dataY   = dataBox[3] - dataBox[1]
+-  var screenX = viewBox[2] - viewBox[0]
+-  var screenY = viewBox[3] - viewBox[1]
++        // add the final slice
++        newSlice(slices, slice, area, dist, outer);
++    }
+ 
+-  MATRIX[0] = 2.0 * boundX / dataX
+-  MATRIX[4] = 2.0 * boundY / dataY
+-  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++    return slices;
++}
+ 
+-  SCREEN_SHAPE[0] = screenX
+-  SCREEN_SHAPE[1] = screenY
++function newSlice(slices, slice, area, dist, outer) {
++    if (slice.length) {
++        // we don't recalculate the area/length of the unclipped geometry because the case where it goes
++        // below the visibility threshold as a result of clipping is rare, so we avoid doing unnecessary work
++        slice.area = area;
++        slice.dist = dist;
++        if (outer !== undefined) slice.outer = outer;
+ 
+-  var buffer    = this.lineBuffer
+-  buffer.bind()
++        slices.push(slice);
++    }
++    return [];
++}
+ 
+-  var fill = this.fill
++},{"./feature":107}],106:[function(require,module,exports){
++'use strict';
+ 
+-  if(fill[0] || fill[1] || fill[2] || fill[3]) {
++module.exports = convert;
+ 
+-    var fillShader = this.fillShader
+-    fillShader.bind()
++var simplify = require('./simplify');
++var createFeature = require('./feature');
+ 
+-    var fillUniforms = fillShader.uniforms
+-    fillUniforms.matrix = MATRIX
+-    fillUniforms.depth = plot.nextDepthValue()
++// converts GeoJSON feature into an intermediate projected JSON vector format with simplification data
+ 
+-    var fillAttributes = fillShader.attributes
+-    fillAttributes.a.pointer(gl.FLOAT, false, 16, 0)
+-    fillAttributes.d.pointer(gl.FLOAT, false, 16, 8)
++function convert(data, tolerance) {
++    var features = [];
+ 
+-    gl.depthMask(true)
+-    gl.enable(gl.DEPTH_TEST)
++    if (data.type === 'FeatureCollection') {
++        for (var i = 0; i < data.features.length; i++) {
++            convertFeature(features, data.features[i], tolerance);
++        }
++    } else if (data.type === 'Feature') {
++        convertFeature(features, data, tolerance);
+ 
+-    var fillColor = this.fillColor
+-    if(fill[0]) {
+-      fillUniforms.color        = fillColor[0]
+-      fillUniforms.projectAxis  = NX_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
++    } else {
++        // single geometry or a geometry collection
++        convertFeature(features, {geometry: data}, tolerance);
+     }
++    return features;
++}
+ 
+-    if(fill[1]) {
+-      fillUniforms.color        = fillColor[1]
+-      fillUniforms.projectAxis  = NY_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
++function convertFeature(features, feature, tolerance) {
++    if (feature.geometry === null) {
++        // ignore features with null geometry
++        return;
+     }
+ 
+-    if(fill[2]) {
+-      fillUniforms.color        = fillColor[2]
+-      fillUniforms.projectAxis  = PX_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
++    var geom = feature.geometry,
++        type = geom.type,
++        coords = geom.coordinates,
++        tags = feature.properties,
++        id = feature.id,
++        i, j, rings, projectedRing;
++
++    if (type === 'Point') {
++        features.push(createFeature(tags, 1, [projectPoint(coords)], id));
++
++    } else if (type === 'MultiPoint') {
++        features.push(createFeature(tags, 1, project(coords), id));
++
++    } else if (type === 'LineString') {
++        features.push(createFeature(tags, 2, [project(coords, tolerance)], id));
++
++    } else if (type === 'MultiLineString' || type === 'Polygon') {
++        rings = [];
++        for (i = 0; i < coords.length; i++) {
++            projectedRing = project(coords[i], tolerance);
++            if (type === 'Polygon') projectedRing.outer = (i === 0);
++            rings.push(projectedRing);
++        }
++        features.push(createFeature(tags, type === 'Polygon' ? 3 : 2, rings, id));
++
++    } else if (type === 'MultiPolygon') {
++        rings = [];
++        for (i = 0; i < coords.length; i++) {
++            for (j = 0; j < coords[i].length; j++) {
++                projectedRing = project(coords[i][j], tolerance);
++                projectedRing.outer = (j === 0);
++                rings.push(projectedRing);
++            }
++        }
++        features.push(createFeature(tags, 3, rings, id));
++
++    } else if (type === 'GeometryCollection') {
++        for (i = 0; i < geom.geometries.length; i++) {
++            convertFeature(features, {
++                geometry: geom.geometries[i],
++                properties: tags
++            }, tolerance);
++        }
++
++    } else {
++        throw new Error('Input data is not a valid GeoJSON object.');
+     }
++}
+ 
+-    if(fill[3]) {
+-      fillUniforms.color        = fillColor[3]
+-      fillUniforms.projectAxis  = PY_AXIS
+-      fillUniforms.projectValue = 1
+-      gl.drawArrays(gl.TRIANGLES, 0, count)
++function project(lonlats, tolerance) {
++    var projected = [];
++    for (var i = 0; i < lonlats.length; i++) {
++        projected.push(projectPoint(lonlats[i]));
++    }
++    if (tolerance) {
++        simplify(projected, tolerance);
++        calcSize(projected);
+     }
++    return projected;
++}
+ 
+-    gl.depthMask(false)
+-    gl.disable(gl.DEPTH_TEST)
+-  }
++function projectPoint(p) {
++    var sin = Math.sin(p[1] * Math.PI / 180),
++        x = (p[0] / 360 + 0.5),
++        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
+ 
+-  var shader    = this.lineShader
+-  shader.bind()
++    y = y < 0 ? 0 :
++        y > 1 ? 1 : y;
+ 
+-  var uniforms = shader.uniforms
+-  uniforms.matrix = MATRIX
+-  uniforms.color  = color
+-  uniforms.width  = width * pixelRatio
+-  uniforms.screenShape = SCREEN_SHAPE
+-  uniforms.dashPattern = this.dashPattern.bind()
+-  uniforms.dashLength = this.dashLength * pixelRatio
++    return [x, y, 0];
++}
+ 
+-  var attributes = shader.attributes
+-  attributes.a.pointer(gl.FLOAT, false, 16, 0)
+-  attributes.d.pointer(gl.FLOAT, false, 16, 8)
++// calculate area and length of the poly
++function calcSize(points) {
++    var area = 0,
++        dist = 0;
++
++    for (var i = 0, a, b; i < points.length - 1; i++) {
++        a = b || points[i];
++        b = points[i + 1];
++
++        area += a[0] * b[1] - b[0] * a[1];
++
++        // use Manhattan distance instead of Euclidian one to avoid expensive square root computation
++        dist += Math.abs(b[0] - a[0]) + Math.abs(b[1] - a[1]);
++    }
++    points.area = Math.abs(area / 2);
++    points.dist = dist;
++}
++
++},{"./feature":107,"./simplify":109}],107:[function(require,module,exports){
++'use strict';
++
++module.exports = createFeature;
++
++function createFeature(tags, type, geom, id) {
++    var feature = {
++        id: id || null,
++        type: type,
++        geometry: geom,
++        tags: tags || null,
++        min: [Infinity, Infinity], // initial bbox values
++        max: [-Infinity, -Infinity]
++    };
++    calcBBox(feature);
++    return feature;
++}
+ 
+-  gl.drawArrays(gl.TRIANGLES, 0, count)
++// calculate the feature bounding box for faster clipping later
++function calcBBox(feature) {
++    var geometry = feature.geometry,
++        min = feature.min,
++        max = feature.max;
+ 
+-  //Draw mitres
+-  if(width > 2 && !this.usingDashes) {
+-    var mshader = this.mitreShader
+-    mshader.bind()
++    if (feature.type === 1) {
++        calcRingBBox(min, max, geometry);
++    } else {
++        for (var i = 0; i < geometry.length; i++) {
++            calcRingBBox(min, max, geometry[i]);
++        }
++    }
+ 
+-    var muniforms = mshader.uniforms
+-    muniforms.matrix = MATRIX
+-    muniforms.color  = color
+-    muniforms.screenShape = SCREEN_SHAPE
+-    muniforms.radius = width * pixelRatio
++    return feature;
++}
+ 
+-    mshader.attributes.p.pointer(gl.FLOAT, false, 48, 0)
+-    gl.drawArrays(gl.POINTS, 0, (count/3)|0)
+-  }
++function calcRingBBox(min, max, points) {
++    for (var i = 0, p; i < points.length; i++) {
++        p = points[i];
++        min[0] = Math.min(p[0], min[0]);
++        max[0] = Math.max(p[0], max[0]);
++        min[1] = Math.min(p[1], min[1]);
++        max[1] = Math.max(p[1], max[1]);
++    }
+ }
+-})()
+ 
+-proto.drawPick = (function() {
+-  var MATRIX = [1, 0, 0,
+-                0, 1, 0,
+-                0, 0, 1]
+-  var SCREEN_SHAPE = [0,0]
+-  var PICK_OFFSET = [0,0,0,0]
+-  return function(pickOffset) {
+-    var plot      = this.plot
+-    var shader    = this.pickShader
+-    var buffer    = this.lineBuffer
+-    var pickBuffer= this.pickBuffer
+-    var width     = this.width
+-    var numPoints = this.numPoints
+-    var bounds    = this.bounds
+-    var count     = this.vertCount
++},{}],108:[function(require,module,exports){
++'use strict';
+ 
+-    var gl        = plot.gl
+-    var viewBox   = plot.viewBox
+-    var dataBox   = plot.dataBox
+-    var pixelRatio = plot.pickPixelRatio
++module.exports = geojsonvt;
+ 
+-    var boundX  = bounds[2]  - bounds[0]
+-    var boundY  = bounds[3]  - bounds[1]
+-    var dataX   = dataBox[2] - dataBox[0]
+-    var dataY   = dataBox[3] - dataBox[1]
+-    var screenX = viewBox[2] - viewBox[0]
+-    var screenY = viewBox[3] - viewBox[1]
++var convert = require('./convert'),     // GeoJSON conversion and preprocessing
++    transform = require('./transform'), // coordinate transformation
++    clip = require('./clip'),           // stripe clipping algorithm
++    wrap = require('./wrap'),           // date line processing
++    createTile = require('./tile');     // final simplified tile generation
+ 
+-    this.pickOffset = pickOffset
+ 
+-    if(!count) {
+-      return pickOffset + numPoints
+-    }
++function geojsonvt(data, options) {
++    return new GeoJSONVT(data, options);
++}
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++function GeoJSONVT(data, options) {
++    options = this.options = extend(Object.create(this.options), options);
+ 
+-    SCREEN_SHAPE[0] = screenX
+-    SCREEN_SHAPE[1] = screenY
++    var debug = options.debug;
+ 
+-    PICK_OFFSET[0] =  pickOffset       & 0xff
+-    PICK_OFFSET[1] = (pickOffset>>>8)  & 0xff
+-    PICK_OFFSET[2] = (pickOffset>>>16) & 0xff
+-    PICK_OFFSET[3] =  pickOffset>>>24
++    if (debug) console.time('preprocess data');
+ 
+-    shader.bind()
++    var z2 = 1 << options.maxZoom, // 2^z
++        features = convert(data, options.tolerance / (z2 * options.extent));
+ 
+-    var uniforms = shader.uniforms
+-    uniforms.matrix      = MATRIX
+-    uniforms.width       = width * pixelRatio
+-    uniforms.pickOffset  = PICK_OFFSET
+-    uniforms.screenShape = SCREEN_SHAPE
++    this.tiles = {};
++    this.tileCoords = [];
+ 
+-    var attributes = shader.attributes
++    if (debug) {
++        console.timeEnd('preprocess data');
++        console.log('index: maxZoom: %d, maxPoints: %d', options.indexMaxZoom, options.indexMaxPoints);
++        console.time('generate tiles');
++        this.stats = {};
++        this.total = 0;
++    }
+ 
+-    buffer.bind()
+-    attributes.a.pointer(gl.FLOAT, false, 16, 0)
+-    attributes.d.pointer(gl.FLOAT, false, 16, 8)
++    features = wrap(features, options.buffer / options.extent, intersectX);
+ 
+-    pickBuffer.bind()
+-    attributes.pick0.pointer(gl.UNSIGNED_BYTE, false, 8, 0)
+-    attributes.pick1.pointer(gl.UNSIGNED_BYTE, false, 8, 4)
++    // start slicing from the top tile down
++    if (features.length) this.splitTile(features, 0, 0, 0);
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, count)
++    if (debug) {
++        if (features.length) console.log('features: %d, points: %d', this.tiles[0].numFeatures, this.tiles[0].numPoints);
++        console.timeEnd('generate tiles');
++        console.log('tiles generated:', this.total, JSON.stringify(this.stats));
++    }
++}
+ 
+-    return pickOffset + numPoints
+-  }
+-})()
++GeoJSONVT.prototype.options = {
++    maxZoom: 14,            // max zoom to preserve detail on
++    indexMaxZoom: 5,        // max zoom in the tile index
++    indexMaxPoints: 100000, // max number of points per tile in the tile index
++    solidChildren: false,   // whether to tile solid square tiles further
++    tolerance: 3,           // simplification tolerance (higher means simpler)
++    extent: 4096,           // tile extent
++    buffer: 64,             // tile buffer on each side
++    debug: 0                // logging level (0, 1 or 2)
++};
+ 
+-proto.pick = function(x, y, value) {
+-  var pickOffset = this.pickOffset
+-  var pointCount = this.numPoints
+-  if(value < pickOffset || value >= pickOffset + pointCount) {
+-    return null
+-  }
+-  var pointId = value - pickOffset
+-  var points = this.data
+-  return {
+-    object:    this,
+-    pointId:   pointId,
+-    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+-  }
+-}
++GeoJSONVT.prototype.splitTile = function (features, z, x, y, cz, cx, cy) {
+ 
+-function deepCopy(arr) {
+-  return arr.map(function(x) {
+-    return x.slice()
+-  })
+-}
++    var stack = [features, z, x, y],
++        options = this.options,
++        debug = options.debug,
++        solid = null;
+ 
+-proto.update = function(options) {
+-  options = options || {}
++    // avoid recursion by using a processing queue
++    while (stack.length) {
++        y = stack.pop();
++        x = stack.pop();
++        z = stack.pop();
++        features = stack.pop();
+ 
+-  var gl = this.plot.gl
++        var z2 = 1 << z,
++            id = toID(z, x, y),
++            tile = this.tiles[id],
++            tileTolerance = z === options.maxZoom ? 0 : options.tolerance / (z2 * options.extent);
+ 
+-  var connectGaps = !!options.connectGaps
++        if (!tile) {
++            if (debug > 1) console.time('creation');
+ 
+-  this.color = (options.color || [0,0,1,1]).slice()
+-  this.width = +(options.width || 1)
++            tile = this.tiles[id] = createTile(features, z2, x, y, tileTolerance, z === options.maxZoom);
++            this.tileCoords.push({z: z, x: x, y: y});
+ 
+-  this.fill      = (options.fill || [false,false,false,false]).slice()
+-  this.fillColor = deepCopy(options.fillColor || [[0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1],
+-                     [0,0,0,1]])
++            if (debug) {
++                if (debug > 1) {
++                    console.log('tile z%d-%d-%d (features: %d, points: %d, simplified: %d)',
++                        z, x, y, tile.numFeatures, tile.numPoints, tile.numSimplified);
++                    console.timeEnd('creation');
++                }
++                var key = 'z' + z;
++                this.stats[key] = (this.stats[key] || 0) + 1;
++                this.total++;
++            }
++        }
+ 
+-  var dashes = options.dashes || [1]
+-  var dashLength = 0
+-  for(var i=0; i<dashes.length; ++i) {
+-    dashLength += dashes[i]
+-  }
+-  var dashData = pool.mallocUint8(dashLength)
+-  var ptr = 0
+-  var fillColor = 255
+-  for(var i=0; i<dashes.length; ++i) {
+-    for(var j=0; j<dashes[i]; ++j) {
+-      dashData[ptr++] = fillColor
+-    }
+-    fillColor ^= 255
+-  }
+-  this.dashPattern.dispose()
+-  this.usingDashes = dashes.length > 1
++        // save reference to original geometry in tile so that we can drill down later if we stop now
++        tile.source = features;
+ 
+-  this.dashPattern = createTexture(gl,
+-    ndarray(dashData, [dashLength, 1, 4], [1, 0, 0]))
+-  this.dashPattern.minFilter = gl.NEAREST
+-  this.dashPattern.magFilter = gl.NEAREST
+-  this.dashLength = dashLength
+-  pool.free(dashData)
++        // if it's the first-pass tiling
++        if (!cz) {
++            // stop tiling if we reached max zoom, or if the tile is too simple
++            if (z === options.indexMaxZoom || tile.numPoints <= options.indexMaxPoints) continue;
+ 
+-  var data = options.positions
+-  this.data = data
++        // if a drilldown to a specific tile
++        } else {
++            // stop tiling if we reached base zoom or our target tile zoom
++            if (z === options.maxZoom || z === cz) continue;
+ 
+-  var bounds = this.bounds
+-  bounds[0] = bounds[1] = Infinity
+-  bounds[2] = bounds[3] = -Infinity
++            // stop tiling if it's not an ancestor of the target tile
++            var m = 1 << (cz - z);
++            if (x !== Math.floor(cx / m) || y !== Math.floor(cy / m)) continue;
++        }
+ 
+-  var numPoints = this.numPoints = data.length>>>1
+-  if(numPoints === 0) {
+-    return
+-  }
++        // stop tiling if the tile is solid clipped square
++        if (!options.solidChildren && isClippedSquare(tile, options.extent, options.buffer)) {
++            if (cz) solid = z; // and remember the zoom if we're drilling down
++            continue;
++        }
+ 
+-  for(var i=0; i<numPoints; ++i) {
+-    var ax = data[2*i]
+-    var ay = data[2*i+1]
++        // if we slice further down, no need to keep source geometry
++        tile.source = null;
+ 
+-    if (isNaN(ax) || isNaN(ay)) {
+-      continue
+-    }
++        if (debug > 1) console.time('clipping');
+ 
+-    bounds[0] = Math.min(bounds[0], ax)
+-    bounds[1] = Math.min(bounds[1], ay)
+-    bounds[2] = Math.max(bounds[2], ax)
+-    bounds[3] = Math.max(bounds[3], ay)
+-  }
++        // values we'll use for clipping
++        var k1 = 0.5 * options.buffer / options.extent,
++            k2 = 0.5 - k1,
++            k3 = 0.5 + k1,
++            k4 = 1 + k1,
++            tl, bl, tr, br, left, right;
+ 
+-  if(bounds[0] === bounds[2]) {
+-    bounds[2] += 1
+-  }
+-  if(bounds[3] === bounds[1]) {
+-    bounds[3] += 1
+-  }
++        tl = bl = tr = br = null;
+ 
+-  //Generate line data
+-  var lineData    = pool.mallocFloat32(24*(numPoints-1))
+-  var pickData    = pool.mallocUint32(12*(numPoints-1))
+-  var lineDataPtr = lineData.length
+-  var pickDataPtr = pickData.length
+-  var ptr = numPoints
++        left  = clip(features, z2, x - k1, x + k3, 0, intersectX, tile.min[0], tile.max[0]);
++        right = clip(features, z2, x + k2, x + k4, 0, intersectX, tile.min[0], tile.max[0]);
+ 
+-  var count = 0
++        if (left) {
++            tl = clip(left, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
++            bl = clip(left, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
++        }
+ 
+-  while(ptr > 1) {
+-    var id = --ptr
+-    var ax = data[2*ptr]
+-    var ay = data[2*ptr+1]
++        if (right) {
++            tr = clip(right, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
++            br = clip(right, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
++        }
+ 
+-    var next = id-1
+-    var bx = data[2*next]
+-    var by = data[2*next+1]
++        if (debug > 1) console.timeEnd('clipping');
+ 
+-    if (isNaN(ax) || isNaN(ay) || isNaN(bx) || isNaN(by)) {
+-      continue
++        if (features.length) {
++            stack.push(tl || [], z + 1, x * 2,     y * 2);
++            stack.push(bl || [], z + 1, x * 2,     y * 2 + 1);
++            stack.push(tr || [], z + 1, x * 2 + 1, y * 2);
++            stack.push(br || [], z + 1, x * 2 + 1, y * 2 + 1);
++        }
+     }
+ 
+-    count += 1
++    return solid;
++};
+ 
+-    ax = (ax - bounds[0]) / (bounds[2] - bounds[0])
+-    ay = (ay - bounds[1]) / (bounds[3] - bounds[1])
++GeoJSONVT.prototype.getTile = function (z, x, y) {
++    var options = this.options,
++        extent = options.extent,
++        debug = options.debug;
+ 
+-    bx = (bx - bounds[0]) / (bounds[2] - bounds[0])
+-    by = (by - bounds[1]) / (bounds[3] - bounds[1])
++    var z2 = 1 << z;
++    x = ((x % z2) + z2) % z2; // wrap tile x coordinate
+ 
+-    var dx = bx - ax
+-    var dy = by - ay
++    var id = toID(z, x, y);
++    if (this.tiles[id]) return transform.tile(this.tiles[id], extent);
+ 
+-    var akey0 = id     | (1<<24)
+-    var akey1 = (id-1)
+-    var bkey0 = id
+-    var bkey1 = (id-1) | (1<<24)
++    if (debug > 1) console.log('drilling down to z%d-%d-%d', z, x, y);
+ 
+-    lineData[--lineDataPtr] = -dy
+-    lineData[--lineDataPtr] = -dx
+-    lineData[--lineDataPtr] = ay
+-    lineData[--lineDataPtr] = ax
+-    pickData[--pickDataPtr] = akey0
+-    pickData[--pickDataPtr] = akey1
++    var z0 = z,
++        x0 = x,
++        y0 = y,
++        parent;
+ 
+-    lineData[--lineDataPtr] = dy
+-    lineData[--lineDataPtr] = dx
+-    lineData[--lineDataPtr] = by
+-    lineData[--lineDataPtr] = bx
+-    pickData[--pickDataPtr] = bkey0
+-    pickData[--pickDataPtr] = bkey1
++    while (!parent && z0 > 0) {
++        z0--;
++        x0 = Math.floor(x0 / 2);
++        y0 = Math.floor(y0 / 2);
++        parent = this.tiles[toID(z0, x0, y0)];
++    }
+ 
+-    lineData[--lineDataPtr] = -dy
+-    lineData[--lineDataPtr] = -dx
+-    lineData[--lineDataPtr] = by
+-    lineData[--lineDataPtr] = bx
+-    pickData[--pickDataPtr] = bkey0
+-    pickData[--pickDataPtr] = bkey1
++    if (!parent || !parent.source) return null;
+ 
+-    lineData[--lineDataPtr] = dy
+-    lineData[--lineDataPtr] = dx
+-    lineData[--lineDataPtr] = by
+-    lineData[--lineDataPtr] = bx
+-    pickData[--pickDataPtr] = bkey0
+-    pickData[--pickDataPtr] = bkey1
++    // if we found a parent tile containing the original geometry, we can drill down from it
++    if (debug > 1) console.log('found parent tile z%d-%d-%d', z0, x0, y0);
+ 
+-    lineData[--lineDataPtr] = -dy
+-    lineData[--lineDataPtr] = -dx
+-    lineData[--lineDataPtr] = ay
+-    lineData[--lineDataPtr] = ax
+-    pickData[--pickDataPtr] = akey0
+-    pickData[--pickDataPtr] = akey1
++    // it parent tile is a solid clipped square, return it instead since it's identical
++    if (isClippedSquare(parent, extent, options.buffer)) return transform.tile(parent, extent);
+ 
+-    lineData[--lineDataPtr] = dy
+-    lineData[--lineDataPtr] = dx
+-    lineData[--lineDataPtr] = ay
+-    lineData[--lineDataPtr] = ax
+-    pickData[--pickDataPtr] = akey0
+-    pickData[--pickDataPtr] = akey1
+-  }
++    if (debug > 1) console.time('drilling down');
++    var solid = this.splitTile(parent.source, z0, x0, y0, z, x, y);
++    if (debug > 1) console.timeEnd('drilling down');
+ 
+-  this.vertCount = 6 * count
+-  this.lineBuffer.update(lineData.subarray(lineDataPtr))
+-  this.pickBuffer.update(pickData.subarray(pickDataPtr))
++    // one of the parent tiles was a solid clipped square
++    if (solid !== null) {
++        var m = 1 << (z - solid);
++        id = toID(solid, Math.floor(x / m), Math.floor(y / m));
++    }
+ 
+-  pool.free(lineData)
+-  pool.free(pickData)
++    return this.tiles[id] ? transform.tile(this.tiles[id], extent) : null;
++};
++
++function toID(z, x, y) {
++    return (((1 << z) * y + x) * 32) + z;
+ }
+ 
+-proto.dispose = function() {
+-  this.plot.removeObject(this)
+-  this.lineBuffer.dispose()
+-  this.pickBuffer.dispose()
+-  this.lineShader.dispose()
+-  this.mitreShader.dispose()
+-  this.fillShader.dispose()
+-  this.pickShader.dispose()
+-  this.dashPattern.dispose()
++function intersectX(a, b, x) {
++    return [x, (x - a[0]) * (b[1] - a[1]) / (b[0] - a[0]) + a[1], 1];
++}
++function intersectY(a, b, y) {
++    return [(y - a[1]) * (b[0] - a[0]) / (b[1] - a[1]) + a[0], y, 1];
+ }
+ 
+-function createLinePlot(plot, options) {
+-  var gl = plot.gl
+-  var lineBuffer  = createBuffer(gl)
+-  var pickBuffer  = createBuffer(gl)
+-  var dashPattern = createTexture(gl, [1,1])
+-  var lineShader  = createShader(gl, SHADERS.lineVertex,  SHADERS.lineFragment)
+-  var mitreShader = createShader(gl, SHADERS.mitreVertex, SHADERS.mitreFragment)
+-  var fillShader  = createShader(gl, SHADERS.fillVertex,  SHADERS.fillFragment)
+-  var pickShader  = createShader(gl, SHADERS.pickVertex,  SHADERS.pickFragment)
+-  var linePlot    = new GLLine2D(
+-    plot,
+-    dashPattern,
+-    lineBuffer,
+-    pickBuffer,
+-    lineShader,
+-    mitreShader,
+-    fillShader,
+-    pickShader)
+-  plot.addObject(linePlot)
+-  linePlot.update(options)
+-  return linePlot
++function extend(dest, src) {
++    for (var i in src) dest[i] = src[i];
++    return dest;
+ }
+ 
+-},{"./lib/shaders":130,"gl-buffer":124,"gl-shader":203,"gl-texture2d":228,"ndarray":433,"typedarray-pool":458}],132:[function(require,module,exports){
++// checks whether a tile is a whole-area fill after clipping; if it is, there's no sense slicing it further
++function isClippedSquare(tile, extent, buffer) {
+ 
+-var createShader  = require('gl-shader')
++    var features = tile.source;
++    if (features.length !== 1) return false;
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, nextPosition;\nattribute float arcLength, lineWidth;\nattribute vec4 color;\n\nuniform vec2 screenShape;\nuniform float pixelRatio;\nuniform mat4 model, view, projection;\n\nvarying vec4 fragColor;\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\n\nvoid main() {\n  vec4 projected = projection * view * model * vec4(position, 1.0);\n  vec4 tangentClip = projection * view * model * vec4(nextPosition - position, 0.0);\n  vec2 tangent = normalize(screenShape * tangentClip.xy);\n  vec2 offset = 0.5 * pixelRatio * lineWidth * vec2(tangent.y, -tangent.x) / screenShape;\n\n  gl_Position = vec4(projected.xy + projected.w * offset, projected.zw);\n\n  worldPosition = position;\n  pixelArcLength = arcLength;\n  fragColor = color;\n}\n"
+-var forwardFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3      clipBounds[2];\nuniform sampler2D dashTexture;\nuniform float     dashScale;\nuniform float     opacity;\n\nvarying vec3    worldPosition;\nvarying float   pixelArcLength;\nvarying vec4    fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  float dashWeight = texture2D(dashTexture, vec2(dashScale * pixelArcLength, 0)).r;\n  if(dashWeight < 0.5) {\n    discard;\n  }\n  gl_FragColor = fragColor * opacity;\n}\n"
+-var pickFrag = "precision mediump float;\n#define GLSLIFY 1\n\n#define FLOAT_MAX  1.70141184e38\n#define FLOAT_MIN  1.17549435e-38\n\nlowp vec4 encode_float_1_0(highp float v) {\n  highp float av = abs(v);\n\n  //Handle special cases\n  if(av < FLOAT_MIN) {\n    return vec4(0.0, 0.0, 0.0, 0.0);\n  } else if(v > FLOAT_MAX) {\n    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;\n  } else if(v < -FLOAT_MAX) {\n    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;\n  }\n\n  highp vec4 c = vec4(0,0,0,0);\n\n  //Compute exponent and mantissa\n  highp float e = floor(log2(av));\n  highp float m = av * pow(2.0, -e) - 1.0;\n  \n  //Unpack mantissa\n  c[1] = floor(128.0 * m);\n  m -= c[1] / 128.0;\n  c[2] = floor(32768.0 * m);\n  m -= c[2] / 32768.0;\n  c[3] = floor(8388608.0 * m);\n  \n  //Unpack exponent\n  highp float ebias = e + 127.0;\n  c[0] = floor(ebias / 2.0);\n  ebias -= c[0] * 2.0;\n  c[1] += floor(ebias) * 128.0; \n\n  //Unpack sign bit\n  c[0] += 128.0 * step(0.0, -v);\n\n  //Scale back to range\n  return c / 255.0;\n}\n\n\n\nuniform float pickId;\nuniform vec3 clipBounds[2];\n\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId/255.0, encode_float_1_0(pixelArcLength).xyz);\n}"
++    var feature = features[0];
++    if (feature.type !== 3 || feature.geometry.length > 1) return false;
+ 
+-var ATTRIBUTES = [
+-  {name: 'position', type: 'vec3'},
+-  {name: 'nextPosition', type: 'vec3'},
+-  {name: 'arcLength', type: 'float'},
+-  {name: 'lineWidth', type: 'float'},
+-  {name: 'color', type: 'vec4'}
+-]
++    var len = feature.geometry[0].length;
++    if (len !== 5) return false;
+ 
+-exports.createShader = function(gl) {
+-  return createShader(gl, vertSrc, forwardFrag, null, ATTRIBUTES)
+-}
++    for (var i = 0; i < len; i++) {
++        var p = transform.point(feature.geometry[0][i], extent, tile.z2, tile.x, tile.y);
++        if ((p[0] !== -buffer && p[0] !== extent + buffer) ||
++            (p[1] !== -buffer && p[1] !== extent + buffer)) return false;
++    }
+ 
+-exports.createPickShader = function(gl) {
+-  return createShader(gl, vertSrc, pickFrag, null, ATTRIBUTES)
++    return true;
+ }
+ 
+-},{"gl-shader":203}],133:[function(require,module,exports){
+-'use strict'
++},{"./clip":105,"./convert":106,"./tile":110,"./transform":111,"./wrap":112}],109:[function(require,module,exports){
++'use strict';
+ 
+-module.exports = createLinePlot
++module.exports = simplify;
+ 
+-var createBuffer = require('gl-buffer')
+-var createVAO = require('gl-vao')
+-var createTexture = require('gl-texture2d')
+-var unpackFloat = require('glsl-read-float')
+-var bsearch = require('binary-search-bounds')
+-var ndarray = require('ndarray')
+-var shaders = require('./lib/shaders')
++// calculate simplification data using optimized Douglas-Peucker algorithm
+ 
+-var createShader = shaders.createShader
+-var createPickShader = shaders.createPickShader
++function simplify(points, tolerance) {
+ 
+-var identity = [1, 0, 0, 0,
+-  0, 1, 0, 0,
+-  0, 0, 1, 0,
+-  0, 0, 0, 1]
++    var sqTolerance = tolerance * tolerance,
++        len = points.length,
++        first = 0,
++        last = len - 1,
++        stack = [],
++        i, maxSqDist, sqDist, index;
+ 
+-function distance (a, b) {
+-  var s = 0.0
+-  for (var i = 0; i < 3; ++i) {
+-    var d = a[i] - b[i]
+-    s += d * d
+-  }
+-  return Math.sqrt(s)
+-}
++    // always retain the endpoints (1 is the max value)
++    points[first][2] = 1;
++    points[last][2] = 1;
++
++    // avoid recursion by using a stack
++    while (last) {
++
++        maxSqDist = 0;
++
++        for (i = first + 1; i < last; i++) {
++            sqDist = getSqSegDist(points[i], points[first], points[last]);
++
++            if (sqDist > maxSqDist) {
++                index = i;
++                maxSqDist = sqDist;
++            }
++        }
+ 
+-function filterClipBounds (bounds) {
+-  var result = [[-1e6, -1e6, -1e6], [1e6, 1e6, 1e6]]
+-  for (var i = 0; i < 3; ++i) {
+-    result[0][i] = Math.max(bounds[0][i], result[0][i])
+-    result[1][i] = Math.min(bounds[1][i], result[1][i])
+-  }
+-  return result
+-}
++        if (maxSqDist > sqTolerance) {
++            points[index][2] = maxSqDist; // save the point importance in squared pixels as a z coordinate
++            stack.push(first);
++            stack.push(index);
++            first = index;
+ 
+-function PickResult (tau, position, index, dataCoordinate) {
+-  this.arcLength = tau
+-  this.position = position
+-  this.index = index
+-  this.dataCoordinate = dataCoordinate
++        } else {
++            last = stack.pop();
++            first = stack.pop();
++        }
++    }
+ }
+ 
+-function LinePlot (gl, shader, pickShader, buffer, vao, texture) {
+-  this.gl = gl
+-  this.shader = shader
+-  this.pickShader = pickShader
+-  this.buffer = buffer
+-  this.vao = vao
+-  this.clipBounds = [
+-    [ -Infinity, -Infinity, -Infinity ],
+-    [ Infinity, Infinity, Infinity ]]
+-  this.points = []
+-  this.arcLength = []
+-  this.vertexCount = 0
+-  this.bounds = [[0, 0, 0], [0, 0, 0]]
+-  this.pickId = 0
+-  this.lineWidth = 1
+-  this.texture = texture
+-  this.dashScale = 1
+-  this.opacity = 1
+-  this.dirty = true
+-  this.pixelRatio = 1
+-}
++// square distance from a point to a segment
++function getSqSegDist(p, a, b) {
+ 
+-var proto = LinePlot.prototype
++    var x = a[0], y = a[1],
++        bx = b[0], by = b[1],
++        px = p[0], py = p[1],
++        dx = bx - x,
++        dy = by - y;
+ 
+-proto.isTransparent = function () {
+-  return this.opacity < 1
+-}
++    if (dx !== 0 || dy !== 0) {
+ 
+-proto.isOpaque = function () {
+-  return this.opacity >= 1
+-}
++        var t = ((px - x) * dx + (py - y) * dy) / (dx * dx + dy * dy);
+ 
+-proto.pickSlots = 1
++        if (t > 1) {
++            x = bx;
++            y = by;
+ 
+-proto.setPickBase = function (id) {
+-  this.pickId = id
+-}
++        } else if (t > 0) {
++            x += dx * t;
++            y += dy * t;
++        }
++    }
+ 
+-proto.drawTransparent = proto.draw = function (camera) {
+-  var gl = this.gl
+-  var shader = this.shader
+-  var vao = this.vao
+-  shader.bind()
+-  shader.uniforms = {
+-    model: camera.model || identity,
+-    view: camera.view || identity,
+-    projection: camera.projection || identity,
+-    clipBounds: filterClipBounds(this.clipBounds),
+-    dashTexture: this.texture.bind(),
+-    dashScale: this.dashScale / this.arcLength[this.arcLength.length - 1],
+-    opacity: this.opacity,
+-    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
+-    pixelRatio: this.pixelRatio
+-  }
+-  vao.bind()
+-  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
+-}
++    dx = px - x;
++    dy = py - y;
+ 
+-proto.drawPick = function (camera) {
+-  var gl = this.gl
+-  var shader = this.pickShader
+-  var vao = this.vao
+-  shader.bind()
+-  shader.uniforms = {
+-    model: camera.model || identity,
+-    view: camera.view || identity,
+-    projection: camera.projection || identity,
+-    pickId: this.pickId,
+-    clipBounds: filterClipBounds(this.clipBounds),
+-    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
+-    pixelRatio: this.pixelRatio
+-  }
+-  vao.bind()
+-  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
++    return dx * dx + dy * dy;
+ }
+ 
+-proto.update = function (options) {
+-  var i, j
++},{}],110:[function(require,module,exports){
++'use strict';
+ 
+-  this.dirty = true
++module.exports = createTile;
+ 
+-  var connectGaps = !!options.connectGaps
++function createTile(features, z2, tx, ty, tolerance, noSimplify) {
++    var tile = {
++        features: [],
++        numPoints: 0,
++        numSimplified: 0,
++        numFeatures: 0,
++        source: null,
++        x: tx,
++        y: ty,
++        z2: z2,
++        transformed: false,
++        min: [2, 1],
++        max: [-1, 0]
++    };
++    for (var i = 0; i < features.length; i++) {
++        tile.numFeatures++;
++        addFeature(tile, features[i], tolerance, noSimplify);
+ 
+-  if ('dashScale' in options) {
+-    this.dashScale = options.dashScale
+-  }
+-  if ('opacity' in options) {
+-    this.opacity = +options.opacity
+-  }
++        var min = features[i].min,
++            max = features[i].max;
+ 
+-  var positions = options.position || options.positions
+-  if (!positions) {
+-    return
+-  }
++        if (min[0] < tile.min[0]) tile.min[0] = min[0];
++        if (min[1] < tile.min[1]) tile.min[1] = min[1];
++        if (max[0] > tile.max[0]) tile.max[0] = max[0];
++        if (max[1] > tile.max[1]) tile.max[1] = max[1];
++    }
++    return tile;
++}
+ 
+-  // Default color
+-  var colors = options.color || options.colors || [0, 0, 0, 1]
++function addFeature(tile, feature, tolerance, noSimplify) {
+ 
+-  var lineWidth = options.lineWidth || 1
++    var geom = feature.geometry,
++        type = feature.type,
++        simplified = [],
++        sqTolerance = tolerance * tolerance,
++        i, j, ring, p;
+ 
+-  // Recalculate buffer data
+-  var buffer = []
+-  var arcLengthArray = []
+-  var pointArray = []
+-  var arcLength = 0.0
+-  var vertexCount = 0
+-  var bounds = [
+-    [ Infinity, Infinity, Infinity ],
+-    [ -Infinity, -Infinity, -Infinity ]]
+-  var hadGap = false
++    if (type === 1) {
++        for (i = 0; i < geom.length; i++) {
++            simplified.push(geom[i]);
++            tile.numPoints++;
++            tile.numSimplified++;
++        }
+ 
+-  fill_loop:
+-  for (i = 1; i < positions.length; ++i) {
+-    var a = positions[i - 1]
+-    var b = positions[i]
++    } else {
+ 
+-    arcLengthArray.push(arcLength)
+-    pointArray.push(a.slice())
++        // simplify and transform projected coordinates for tile geometry
++        for (i = 0; i < geom.length; i++) {
++            ring = geom[i];
+ 
+-    for (j = 0; j < 3; ++j) {
+-      if (isNaN(a[j]) || isNaN(b[j]) ||
+-        !isFinite(a[j]) || !isFinite(b[j])) {
++            // filter out tiny polylines & polygons
++            if (!noSimplify && ((type === 2 && ring.dist < tolerance) ||
++                                (type === 3 && ring.area < sqTolerance))) {
++                tile.numPoints += ring.length;
++                continue;
++            }
+ 
+-        if (!connectGaps && buffer.length > 0) {
+-          for (var k = 0; k < 24; ++k) {
+-            buffer.push(buffer[buffer.length - 12])
+-          }
+-          vertexCount += 2
+-          hadGap = true
+-        }
++            var simplifiedRing = [];
+ 
+-        continue fill_loop
+-      }
+-      bounds[0][j] = Math.min(bounds[0][j], a[j], b[j])
+-      bounds[1][j] = Math.max(bounds[1][j], a[j], b[j])
+-    }
++            for (j = 0; j < ring.length; j++) {
++                p = ring[j];
++                // keep points with importance > tolerance
++                if (noSimplify || p[2] > sqTolerance) {
++                    simplifiedRing.push(p);
++                    tile.numSimplified++;
++                }
++                tile.numPoints++;
++            }
+ 
+-    var acolor, bcolor
+-    if (Array.isArray(colors[0])) {
+-      acolor = colors[i - 1]
+-      bcolor = colors[i]
+-    } else {
+-      acolor = bcolor = colors
+-    }
+-    if (acolor.length === 3) {
+-      acolor = [acolor[0], acolor[1], acolor[2], 1]
+-    }
+-    if (bcolor.length === 3) {
+-      bcolor = [bcolor[0], bcolor[1], bcolor[2], 1]
++            if (type === 3) rewind(simplifiedRing, ring.outer);
++
++            simplified.push(simplifiedRing);
++        }
+     }
+ 
+-    var w0
+-    if (Array.isArray(lineWidth)) {
+-      w0 = lineWidth[i - 1]
+-    } else {
+-      w0 = lineWidth
++    if (simplified.length) {
++        var tileFeature = {
++            geometry: simplified,
++            type: type,
++            tags: feature.tags || null
++        };
++        if (feature.id !== null) {
++            tileFeature.id = feature.id;
++        }
++        tile.features.push(tileFeature);
+     }
++}
+ 
+-    var t0 = arcLength
+-    arcLength += distance(a, b)
++function rewind(ring, clockwise) {
++    var area = signedArea(ring);
++    if (area < 0 === clockwise) ring.reverse();
++}
+ 
+-    if (hadGap) {
+-      for (j = 0; j < 2; ++j) {
+-        buffer.push(
+-          a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3])
+-      }
+-      vertexCount += 2
+-      hadGap = false
++function signedArea(ring) {
++    var sum = 0;
++    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
++        p1 = ring[i];
++        p2 = ring[j];
++        sum += (p2[0] - p1[0]) * (p1[1] + p2[1]);
+     }
++    return sum;
++}
+ 
+-    buffer.push(
+-      a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3],
+-      a[0], a[1], a[2], b[0], b[1], b[2], t0, -w0, acolor[0], acolor[1], acolor[2], acolor[3],
+-      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, -w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3],
+-      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3])
+-
+-    vertexCount += 4
+-  }
+-  this.buffer.update(buffer)
++},{}],111:[function(require,module,exports){
++'use strict';
+ 
+-  arcLengthArray.push(arcLength)
+-  pointArray.push(positions[positions.length - 1].slice())
++exports.tile = transformTile;
++exports.point = transformPoint;
+ 
+-  this.bounds = bounds
++// Transforms the coordinates of each feature in the given tile from
++// mercator-projected space into (extent x extent) tile space.
++function transformTile(tile, extent) {
++    if (tile.transformed) return tile;
+ 
+-  this.vertexCount = vertexCount
++    var z2 = tile.z2,
++        tx = tile.x,
++        ty = tile.y,
++        i, j, k;
+ 
+-  this.points = pointArray
+-  this.arcLength = arcLengthArray
++    for (i = 0; i < tile.features.length; i++) {
++        var feature = tile.features[i],
++            geom = feature.geometry,
++            type = feature.type;
+ 
+-  if ('dashes' in options) {
+-    var dashArray = options.dashes
++        if (type === 1) {
++            for (j = 0; j < geom.length; j++) geom[j] = transformPoint(geom[j], extent, z2, tx, ty);
+ 
+-    // Calculate prefix sum
+-    var prefixSum = dashArray.slice()
+-    prefixSum.unshift(0)
+-    for (i = 1; i < prefixSum.length; ++i) {
+-      prefixSum[i] = prefixSum[i - 1] + prefixSum[i]
++        } else {
++            for (j = 0; j < geom.length; j++) {
++                var ring = geom[j];
++                for (k = 0; k < ring.length; k++) ring[k] = transformPoint(ring[k], extent, z2, tx, ty);
++            }
++        }
+     }
+ 
+-    var dashTexture = ndarray(new Array(256 * 4), [256, 1, 4])
+-    for (i = 0; i < 256; ++i) {
+-      for (j = 0; j < 4; ++j) {
+-        dashTexture.set(i, 0, j, 0)
+-      }
+-      if (bsearch.le(prefixSum, prefixSum[prefixSum.length - 1] * i / 255.0) & 1) {
+-        dashTexture.set(i, 0, 0, 0)
+-      } else {
+-        dashTexture.set(i, 0, 0, 255)
+-      }
+-    }
++    tile.transformed = true;
+ 
+-    this.texture.setPixels(dashTexture)
+-  }
++    return tile;
+ }
+ 
+-proto.dispose = function () {
+-  this.shader.dispose()
+-  this.vao.dispose()
+-  this.buffer.dispose()
++function transformPoint(p, extent, z2, tx, ty) {
++    var x = Math.round(extent * (p[0] * z2 - tx)),
++        y = Math.round(extent * (p[1] * z2 - ty));
++    return [x, y];
+ }
+ 
+-proto.pick = function (selection) {
+-  if (!selection) {
+-    return null
+-  }
+-  if (selection.id !== this.pickId) {
+-    return null
+-  }
+-  var tau = unpackFloat(
+-    selection.value[0],
+-    selection.value[1],
+-    selection.value[2],
+-    0)
+-  var index = bsearch.le(this.arcLength, tau)
+-  if (index < 0) {
+-    return null
+-  }
+-  if (index === this.arcLength.length - 1) {
+-    return new PickResult(
+-      this.arcLength[this.arcLength.length - 1],
+-      this.points[this.points.length - 1].slice(),
+-      index)
+-  }
+-  var a = this.points[index]
+-  var b = this.points[Math.min(index + 1, this.points.length - 1)]
+-  var t = (tau - this.arcLength[index]) / (this.arcLength[index + 1] - this.arcLength[index])
+-  var ti = 1.0 - t
+-  var x = [0, 0, 0]
+-  for (var i = 0; i < 3; ++i) {
+-    x[i] = ti * a[i] + t * b[i]
+-  }
+-  var dataIndex = Math.min((t < 0.5) ? index : (index + 1), this.points.length - 1)
+-  return new PickResult(
+-    tau,
+-    x,
+-    dataIndex,
+-    this.points[dataIndex])
+-}
++},{}],112:[function(require,module,exports){
++'use strict';
+ 
+-function createLinePlot (options) {
+-  var gl = options.gl || (options.scene && options.scene.gl)
++var clip = require('./clip');
++var createFeature = require('./feature');
+ 
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.nextPosition.location = 1
+-  shader.attributes.arcLength.location = 2
+-  shader.attributes.lineWidth.location = 3
+-  shader.attributes.color.location = 4
++module.exports = wrap;
+ 
+-  var pickShader = createPickShader(gl)
+-  pickShader.attributes.position.location = 0
+-  pickShader.attributes.nextPosition.location = 1
+-  pickShader.attributes.arcLength.location = 2
+-  pickShader.attributes.lineWidth.location = 3
+-  pickShader.attributes.color.location = 4
++function wrap(features, buffer, intersectX) {
++    var merged = features,
++        left  = clip(features, 1, -1 - buffer, buffer,     0, intersectX, -1, 2), // left world copy
++        right = clip(features, 1,  1 - buffer, 2 + buffer, 0, intersectX, -1, 2); // right world copy
+ 
+-  var buffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    {
+-      'buffer': buffer,
+-      'size': 3,
+-      'offset': 0,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 3,
+-      'offset': 12,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 1,
+-      'offset': 24,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 1,
+-      'offset': 28,
+-      'stride': 48
+-    },
+-    {
+-      'buffer': buffer,
+-      'size': 4,
+-      'offset': 32,
+-      'stride': 48
+-    }
+-  ])
++    if (left || right) {
++        merged = clip(features, 1, -buffer, 1 + buffer, 0, intersectX, -1, 2) || []; // center world copy
+ 
+-  // Create texture for dash pattern
+-  var defaultTexture = ndarray(new Array(256 * 4), [256, 1, 4])
+-  for (var i = 0; i < 256 * 4; ++i) {
+-    defaultTexture.data[i] = 255
+-  }
+-  var texture = createTexture(gl, defaultTexture)
+-  texture.wrap = gl.REPEAT
++        if (left) merged = shiftFeatureCoords(left, 1).concat(merged); // merge left into center
++        if (right) merged = merged.concat(shiftFeatureCoords(right, -1)); // merge right into center
++    }
+ 
+-  var linePlot = new LinePlot(gl, shader, pickShader, buffer, vao, texture)
+-  linePlot.update(options)
+-  return linePlot
++    return merged;
+ }
+ 
+-},{"./lib/shaders":132,"binary-search-bounds":134,"gl-buffer":124,"gl-texture2d":228,"gl-vao":232,"glsl-read-float":135,"ndarray":433}],134:[function(require,module,exports){
+-arguments[4][22][0].apply(exports,arguments)
+-},{"dup":22}],135:[function(require,module,exports){
+-module.exports = decodeFloat
++function shiftFeatureCoords(features, offset) {
++    var newFeatures = [];
+ 
+-var UINT8_VIEW = new Uint8Array(4)
+-var FLOAT_VIEW = new Float32Array(UINT8_VIEW.buffer)
++    for (var i = 0; i < features.length; i++) {
++        var feature = features[i],
++            type = feature.type;
+ 
+-function decodeFloat(x, y, z, w) {
+-  UINT8_VIEW[0] = w
+-  UINT8_VIEW[1] = z
+-  UINT8_VIEW[2] = y
+-  UINT8_VIEW[3] = x
+-  return FLOAT_VIEW[0]
++        var newGeometry;
++
++        if (type === 1) {
++            newGeometry = shiftCoords(feature.geometry, offset);
++        } else {
++            newGeometry = [];
++            for (var j = 0; j < feature.geometry.length; j++) {
++                newGeometry.push(shiftCoords(feature.geometry[j], offset));
++            }
++        }
++
++        newFeatures.push(createFeature(feature.tags, type, newGeometry, feature.id));
++    }
++
++    return newFeatures;
+ }
+ 
+-},{}],136:[function(require,module,exports){
+-module.exports = invert
++function shiftCoords(points, offset) {
++    var newPoints = [];
++    newPoints.area = points.area;
++    newPoints.dist = points.dist;
+ 
+-/**
+- * Inverts a mat3
+- *
+- * @alias mat3.invert
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
+- */
+-function invert(out, a) {
+-  var a00 = a[0], a01 = a[1], a02 = a[2]
+-  var a10 = a[3], a11 = a[4], a12 = a[5]
+-  var a20 = a[6], a21 = a[7], a22 = a[8]
++    for (var i = 0; i < points.length; i++) {
++        newPoints.push([points[i][0] + offset, points[i][1], points[i][2]]);
++    }
++    return newPoints;
++}
+ 
+-  var b01 = a22 * a11 - a12 * a21
+-  var b11 = -a22 * a10 + a12 * a20
+-  var b21 = a21 * a10 - a11 * a20
++},{"./clip":105,"./feature":107}],113:[function(require,module,exports){
++'use strict'
+ 
+-  // Calculate the determinant
+-  var det = a00 * b01 + a01 * b11 + a02 * b21
++module.exports = createAxes
+ 
+-  if (!det) return null
+-  det = 1.0 / det
++var createText        = require('./lib/text.js')
++var createLines       = require('./lib/lines.js')
++var createBackground  = require('./lib/background.js')
++var getCubeProperties = require('./lib/cube.js')
++var Ticks             = require('./lib/ticks.js')
+ 
+-  out[0] = b01 * det
+-  out[1] = (-a22 * a01 + a02 * a21) * det
+-  out[2] = (a12 * a01 - a02 * a11) * det
+-  out[3] = b11 * det
+-  out[4] = (a22 * a00 - a02 * a20) * det
+-  out[5] = (-a12 * a00 + a02 * a10) * det
+-  out[6] = b21 * det
+-  out[7] = (-a21 * a00 + a01 * a20) * det
+-  out[8] = (a11 * a00 - a01 * a10) * det
++var identity = new Float32Array([
++  1, 0, 0, 0,
++  0, 1, 0, 0,
++  0, 0, 1, 0,
++  0, 0, 0, 1])
+ 
+-  return out
++function copyVec3(a, b) {
++  a[0] = b[0]
++  a[1] = b[1]
++  a[2] = b[2]
++  return a
+ }
+ 
+-},{}],137:[function(require,module,exports){
+-module.exports = clone;
++function Axes(gl) {
++  this.gl             = gl
+ 
+-/**
+- * Creates a new mat4 initialized with values from an existing matrix
+- *
+- * @param {mat4} a matrix to clone
+- * @returns {mat4} a new 4x4 matrix
+- */
+-function clone(a) {
+-    var out = new Float32Array(16);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    out[9] = a[9];
+-    out[10] = a[10];
+-    out[11] = a[11];
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
+-},{}],138:[function(require,module,exports){
+-module.exports = create;
++  this.pixelRatio     = 1
+ 
+-/**
+- * Creates a new identity mat4
+- *
+- * @returns {mat4} a new 4x4 matrix
+- */
+-function create() {
+-    var out = new Float32Array(16);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-};
+-},{}],139:[function(require,module,exports){
+-module.exports = determinant;
++  this.bounds         = [ [-10, -10, -10],
++                          [ 10,  10,  10] ]
++  this.ticks          = [ [], [], [] ]
++  this.autoTicks      = true
++  this.tickSpacing    = [ 1, 1, 1 ]
+ 
+-/**
+- * Calculates the determinant of a mat4
+- *
+- * @param {mat4} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-function determinant(a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++  this.tickEnable     = [ true, true, true ]
++  this.tickFont       = [ 'sans-serif', 'sans-serif', 'sans-serif' ]
++  this.tickSize       = [ 12, 12, 12 ]
++  this.tickAngle      = [ 0, 0, 0 ]
++  this.tickColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++  this.tickPad        = [ 10, 10, 10 ]
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32;
++  this.lastCubeProps  = {
++    cubeEdges: [0,0,0],
++    axis:      [0,0,0]
++  }
+ 
+-    // Calculate the determinant
+-    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+-};
+-},{}],140:[function(require,module,exports){
+-module.exports = fromQuat;
++  this.labels         = [ 'x', 'y', 'z' ]
++  this.labelEnable    = [ true, true, true ]
++  this.labelFont      = 'sans-serif'
++  this.labelSize      = [ 20, 20, 20 ]
++  this.labelAngle     = [ 0, 0, 0 ]
++  this.labelColor     = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++  this.labelPad       = [ 10, 10, 10 ]
+ 
+-/**
+- * Creates a matrix from a quaternion rotation.
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @returns {mat4} out
+- */
+-function fromQuat(out, q) {
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++  this.lineEnable     = [ true, true, true ]
++  this.lineMirror     = [ false, false, false ]
++  this.lineWidth      = [ 1, 1, 1 ]
++  this.lineColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+ 
+-        xx = x * x2,
+-        yx = y * x2,
+-        yy = y * y2,
+-        zx = z * x2,
+-        zy = z * y2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++  this.lineTickEnable = [ true, true, true ]
++  this.lineTickMirror = [ false, false, false ]
++  this.lineTickLength = [ 0, 0, 0 ]
++  this.lineTickWidth  = [ 1, 1, 1 ]
++  this.lineTickColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+ 
+-    out[0] = 1 - yy - zz;
+-    out[1] = yx + wz;
+-    out[2] = zx - wy;
+-    out[3] = 0;
++  this.gridEnable     = [ true, true, true ]
++  this.gridWidth      = [ 1, 1, 1 ]
++  this.gridColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+ 
+-    out[4] = yx - wz;
+-    out[5] = 1 - xx - zz;
+-    out[6] = zy + wx;
+-    out[7] = 0;
++  this.zeroEnable     = [ true, true, true ]
++  this.zeroLineColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++  this.zeroLineWidth  = [ 2, 2, 2 ]
+ 
+-    out[8] = zx + wy;
+-    out[9] = zy - wx;
+-    out[10] = 1 - xx - yy;
+-    out[11] = 0;
++  this.backgroundEnable = [ false, false, false ]
++  this.backgroundColor  = [ [0.8, 0.8, 0.8, 0.5],
++                            [0.8, 0.8, 0.8, 0.5],
++                            [0.8, 0.8, 0.8, 0.5] ]
+ 
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
++  this._firstInit = true
++  this._text  = null
++  this._lines = null
++  this._background = createBackground(gl)
++}
+ 
+-    return out;
+-};
+-},{}],141:[function(require,module,exports){
+-module.exports = fromRotationTranslation;
++var proto = Axes.prototype
+ 
+-/**
+- * Creates a matrix from a quaternion rotation and vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @returns {mat4} out
+- */
+-function fromRotationTranslation(out, q, v) {
+-    // Quaternion math
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++proto.update = function(options) {
++  options = options || {}
+ 
+-        xx = x * x2,
+-        xy = x * y2,
+-        xz = x * z2,
+-        yy = y * y2,
+-        yz = y * z2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++  //Option parsing helper functions
++  function parseOption(nest, cons, name) {
++    if(name in options) {
++      var opt = options[name]
++      var prev = this[name]
++      var next
++      if(nest ? (Array.isArray(opt) && Array.isArray(opt[0])) :
++                 Array.isArray(opt) ) {
++        this[name] = next = [ cons(opt[0]), cons(opt[1]), cons(opt[2]) ]
++      } else {
++        this[name] = next = [ cons(opt), cons(opt), cons(opt) ]
++      }
++      for(var i=0; i<3; ++i) {
++        if(next[i] !== prev[i]) {
++          return true
++        }
++      }
++    }
++    return false
++  }
+ 
+-    out[0] = 1 - (yy + zz);
+-    out[1] = xy + wz;
+-    out[2] = xz - wy;
+-    out[3] = 0;
+-    out[4] = xy - wz;
+-    out[5] = 1 - (xx + zz);
+-    out[6] = yz + wx;
+-    out[7] = 0;
+-    out[8] = xz + wy;
+-    out[9] = yz - wx;
+-    out[10] = 1 - (xx + yy);
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
+-    
+-    return out;
+-};
+-},{}],142:[function(require,module,exports){
+-module.exports = identity;
++  var NUMBER  = parseOption.bind(this, false, Number)
++  var BOOLEAN = parseOption.bind(this, false, Boolean)
++  var STRING  = parseOption.bind(this, false, String)
++  var COLOR   = parseOption.bind(this, true, function(v) {
++    if(Array.isArray(v)) {
++      if(v.length === 3) {
++        return [ +v[0], +v[1], +v[2], 1.0 ]
++      } else if(v.length === 4) {
++        return [ +v[0], +v[1], +v[2], +v[3] ]
++      }
++    }
++    return [ 0, 0, 0, 1 ]
++  })
+ 
+-/**
+- * Set a mat4 to the identity matrix
+- *
+- * @param {mat4} out the receiving matrix
+- * @returns {mat4} out
+- */
+-function identity(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-};
+-},{}],143:[function(require,module,exports){
+-module.exports = invert;
++  //Tick marks and bounds
++  var nextTicks
++  var ticksUpdate   = false
++  var boundsChanged = false
++  if('bounds' in options) {
++    var bounds = options.bounds
++i_loop:
++    for(var i=0; i<2; ++i) {
++      for(var j=0; j<3; ++j) {
++        if(bounds[i][j] !== this.bounds[i][j]) {
++          boundsChanged = true
++        }
++        this.bounds[i][j] = bounds[i][j]
++      }
++    }
++  }
++  if('ticks' in options) {
++    nextTicks      = options.ticks
++    ticksUpdate    = true
++    this.autoTicks = false
++    for(var i=0; i<3; ++i) {
++      this.tickSpacing[i] = 0.0
++    }
++  } else if(NUMBER('tickSpacing')) {
++    this.autoTicks  = true
++    boundsChanged   = true
++  }
+ 
+-/**
+- * Inverts a mat4
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-function invert(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++  if(this._firstInit) {
++    if(!('ticks' in options || 'tickSpacing' in options)) {
++      this.autoTicks = true
++    }
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32,
++    //Force tick recomputation on first update
++    boundsChanged   = true
++    ticksUpdate     = true
++    this._firstInit = false
++  }
+ 
+-        // Calculate the determinant
+-        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++  if(boundsChanged && this.autoTicks) {
++    nextTicks = Ticks.create(this.bounds, this.tickSpacing)
++    ticksUpdate = true
++  }
+ 
+-    if (!det) { 
+-        return null; 
++  //Compare next ticks to previous ticks, only update if needed
++  if(ticksUpdate) {
++    for(var i=0; i<3; ++i) {
++      nextTicks[i].sort(function(a,b) {
++        return a.x-b.x
++      })
+     }
+-    det = 1.0 / det;
++    if(Ticks.equal(nextTicks, this.ticks)) {
++      ticksUpdate = false
++    } else {
++      this.ticks = nextTicks
++    }
++  }
+ 
+-    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+-    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+-    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+-    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
+-    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+-    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+-    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+-    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
+-    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+-    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+-    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+-    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
+-    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
+-    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
+-    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
+-    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
++  //Parse tick properties
++  BOOLEAN('tickEnable')
++  if(STRING('tickFont')) {
++    ticksUpdate = true  //If font changes, must rebuild vbo
++  }
++  NUMBER('tickSize')
++  NUMBER('tickAngle')
++  NUMBER('tickPad')
++  COLOR('tickColor')
+ 
+-    return out;
+-};
+-},{}],144:[function(require,module,exports){
+-var identity = require('./identity');
++  //Axis labels
++  var labelUpdate = STRING('labels')
++  if(STRING('labelFont')) {
++    labelUpdate = true
++  }
++  BOOLEAN('labelEnable')
++  NUMBER('labelSize')
++  NUMBER('labelPad')
++  COLOR('labelColor')
+ 
+-module.exports = lookAt;
++  //Axis lines
++  BOOLEAN('lineEnable')
++  BOOLEAN('lineMirror')
++  NUMBER('lineWidth')
++  COLOR('lineColor')
+ 
+-/**
+- * Generates a look-at matrix with the given eye position, focal point, and up axis
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {vec3} eye Position of the viewer
+- * @param {vec3} center Point the viewer is looking at
+- * @param {vec3} up vec3 pointing up
+- * @returns {mat4} out
+- */
+-function lookAt(out, eye, center, up) {
+-    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
+-        eyex = eye[0],
+-        eyey = eye[1],
+-        eyez = eye[2],
+-        upx = up[0],
+-        upy = up[1],
+-        upz = up[2],
+-        centerx = center[0],
+-        centery = center[1],
+-        centerz = center[2];
++  //Axis line ticks
++  BOOLEAN('lineTickEnable')
++  BOOLEAN('lineTickMirror')
++  NUMBER('lineTickLength')
++  NUMBER('lineTickWidth')
++  COLOR('lineTickColor')
+ 
+-    if (Math.abs(eyex - centerx) < 0.000001 &&
+-        Math.abs(eyey - centery) < 0.000001 &&
+-        Math.abs(eyez - centerz) < 0.000001) {
+-        return identity(out);
+-    }
++  //Grid lines
++  BOOLEAN('gridEnable')
++  NUMBER('gridWidth')
++  COLOR('gridColor')
+ 
+-    z0 = eyex - centerx;
+-    z1 = eyey - centery;
+-    z2 = eyez - centerz;
++  //Zero line
++  BOOLEAN('zeroEnable')
++  COLOR('zeroLineColor')
++  NUMBER('zeroLineWidth')
+ 
+-    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
+-    z0 *= len;
+-    z1 *= len;
+-    z2 *= len;
++  //Background
++  BOOLEAN('backgroundEnable')
++  COLOR('backgroundColor')
+ 
+-    x0 = upy * z2 - upz * z1;
+-    x1 = upz * z0 - upx * z2;
+-    x2 = upx * z1 - upy * z0;
+-    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
+-    if (!len) {
+-        x0 = 0;
+-        x1 = 0;
+-        x2 = 0;
+-    } else {
+-        len = 1 / len;
+-        x0 *= len;
+-        x1 *= len;
+-        x2 *= len;
+-    }
++  //Update text if necessary
++  if(!this._text) {
++    this._text = createText(
++      this.gl,
++      this.bounds,
++      this.labels,
++      this.labelFont,
++      this.ticks,
++      this.tickFont)
++  } else if(this._text && (labelUpdate || ticksUpdate)) {
++    this._text.update(
++      this.bounds,
++      this.labels,
++      this.labelFont,
++      this.ticks,
++      this.tickFont)
++  }
++
++  //Update lines if necessary
++  if(this._lines && ticksUpdate) {
++    this._lines.dispose()
++    this._lines = null
++  }
++  if(!this._lines) {
++    this._lines = createLines(this.gl, this.bounds, this.ticks)
++  }
++}
+ 
+-    y0 = z1 * x2 - z2 * x1;
+-    y1 = z2 * x0 - z0 * x2;
+-    y2 = z0 * x1 - z1 * x0;
++function OffsetInfo() {
++  this.primalOffset = [0,0,0]
++  this.primalMinor  = [0,0,0]
++  this.mirrorOffset = [0,0,0]
++  this.mirrorMinor  = [0,0,0]
++}
+ 
+-    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
+-    if (!len) {
+-        y0 = 0;
+-        y1 = 0;
+-        y2 = 0;
++var LINE_OFFSET = [ new OffsetInfo(), new OffsetInfo(), new OffsetInfo() ]
++
++function computeLineOffset(result, i, bounds, cubeEdges, cubeAxis) {
++  var primalOffset = result.primalOffset
++  var primalMinor  = result.primalMinor
++  var dualOffset   = result.mirrorOffset
++  var dualMinor    = result.mirrorMinor
++  var e = cubeEdges[i]
++
++  //Calculate offsets
++  for(var j=0; j<3; ++j) {
++    if(i === j) {
++      continue
++    }
++    var a = primalOffset,
++        b = dualOffset,
++        c = primalMinor,
++        d = dualMinor
++    if(e & (1<<j)) {
++      a = dualOffset
++      b = primalOffset
++      c = dualMinor
++      d = primalMinor
++    }
++    a[j] = bounds[0][j]
++    b[j] = bounds[1][j]
++    if(cubeAxis[j] > 0) {
++      c[j] = -1
++      d[j] = 0
+     } else {
+-        len = 1 / len;
+-        y0 *= len;
+-        y1 *= len;
+-        y2 *= len;
++      c[j] = 0
++      d[j] = +1
+     }
++  }
++}
+ 
+-    out[0] = x0;
+-    out[1] = y0;
+-    out[2] = z0;
+-    out[3] = 0;
+-    out[4] = x1;
+-    out[5] = y1;
+-    out[6] = z1;
+-    out[7] = 0;
+-    out[8] = x2;
+-    out[9] = y2;
+-    out[10] = z2;
+-    out[11] = 0;
+-    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
+-    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
+-    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
+-    out[15] = 1;
++var CUBE_ENABLE = [0,0,0]
++var DEFAULT_PARAMS = {
++  model:      identity,
++  view:       identity,
++  projection: identity
++}
+ 
+-    return out;
+-};
+-},{"./identity":142}],145:[function(require,module,exports){
+-module.exports = multiply;
++proto.isOpaque = function() {
++  return true
++}
+ 
+-/**
+- * Multiplies two mat4's
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-function multiply(out, a, b) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
++proto.isTransparent = function() {
++  return false
++}
+ 
+-    // Cache only the current line of the second matrix
+-    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];  
+-    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++proto.drawTransparent = function(params) {}
+ 
+-    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
+-    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
+-    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++var PRIMAL_MINOR  = [0,0,0]
++var MIRROR_MINOR  = [0,0,0]
++var PRIMAL_OFFSET = [0,0,0]
+ 
+-    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
+-    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+-    return out;
+-};
+-},{}],146:[function(require,module,exports){
+-module.exports = perspective;
++proto.draw = function(params) {
++  params = params || DEFAULT_PARAMS
+ 
+-/**
+- * Generates a perspective projection matrix with the given bounds
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {number} fovy Vertical field of view in radians
+- * @param {number} aspect Aspect ratio. typically viewport width/height
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-function perspective(out, fovy, aspect, near, far) {
+-    var f = 1.0 / Math.tan(fovy / 2),
+-        nf = 1 / (near - far);
+-    out[0] = f / aspect;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = f;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = (far + near) * nf;
+-    out[11] = -1;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = (2 * far * near) * nf;
+-    out[15] = 0;
+-    return out;
+-};
+-},{}],147:[function(require,module,exports){
+-module.exports = rotate;
++  var gl = this.gl
+ 
+-/**
+- * Rotates a mat4 by the given angle
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @param {vec3} axis the axis to rotate around
+- * @returns {mat4} out
+- */
+-function rotate(out, a, rad, axis) {
+-    var x = axis[0], y = axis[1], z = axis[2],
+-        len = Math.sqrt(x * x + y * y + z * z),
+-        s, c, t,
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23,
+-        b00, b01, b02,
+-        b10, b11, b12,
+-        b20, b21, b22;
++  //Geometry for camera and axes
++  var model       = params.model || identity
++  var view        = params.view || identity
++  var projection  = params.projection || identity
++  var bounds      = this.bounds
+ 
+-    if (Math.abs(len) < 0.000001) { return null; }
+-    
+-    len = 1 / len;
+-    x *= len;
+-    y *= len;
+-    z *= len;
++  //Unpack axis info
++  var cubeParams  = getCubeProperties(model, view, projection, bounds)
++  var cubeEdges   = cubeParams.cubeEdges
++  var cubeAxis    = cubeParams.axis
+ 
+-    s = Math.sin(rad);
+-    c = Math.cos(rad);
+-    t = 1 - c;
++  var cx = view[12]
++  var cy = view[13]
++  var cz = view[14]
++  var cw = view[15]
+ 
+-    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
+ 
+-    // Construct the elements of the rotation matrix
+-    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
+-    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
+-    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
++  for(var i=0; i<3; ++i) {
++    this.lastCubeProps.cubeEdges[i] = cubeEdges[i]
++    this.lastCubeProps.axis[i] = cubeAxis[i]
++  }
+ 
+-    // Perform rotation-specific matrix multiplication
+-    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
+-    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
+-    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
+-    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
+-    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
+-    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
+-    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
+-    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
+-    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
+-    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
+-    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
+-    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
++  //Compute axis info
++  var lineOffset  = LINE_OFFSET
++  for(var i=0; i<3; ++i) {
++    computeLineOffset(
++      LINE_OFFSET[i],
++      i,
++      this.bounds,
++      cubeEdges,
++      cubeAxis)
++  }
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
++  //Set up state parameters
++  var gl = this.gl
++
++  //Draw background first
++  var cubeEnable = CUBE_ENABLE
++  for(var i=0; i<3; ++i) {
++    if(this.backgroundEnable[i]) {
++      cubeEnable[i] = cubeAxis[i]
++    } else {
++      cubeEnable[i] = 0
+     }
+-    return out;
+-};
+-},{}],148:[function(require,module,exports){
+-module.exports = rotateX;
++  }
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-function rotateX(out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++  this._background.draw(
++    model,
++    view,
++    projection,
++    bounds,
++    cubeEnable,
++    this.backgroundColor)
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[0]  = a[0];
+-        out[1]  = a[1];
+-        out[2]  = a[2];
+-        out[3]  = a[3];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++  //Draw lines
++  this._lines.bind(
++    model,
++    view,
++    projection,
++    this)
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[4] = a10 * c + a20 * s;
+-    out[5] = a11 * c + a21 * s;
+-    out[6] = a12 * c + a22 * s;
+-    out[7] = a13 * c + a23 * s;
+-    out[8] = a20 * c - a10 * s;
+-    out[9] = a21 * c - a11 * s;
+-    out[10] = a22 * c - a12 * s;
+-    out[11] = a23 * c - a13 * s;
+-    return out;
+-};
+-},{}],149:[function(require,module,exports){
+-module.exports = rotateY;
++  //First draw grid lines and zero lines
++  for(var i=0; i<3; ++i) {
++    var x = [0,0,0]
++    if(cubeAxis[i] > 0) {
++      x[i] = bounds[1][i]
++    } else {
++      x[i] = bounds[0][i]
++    }
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-function rotateY(out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++    //Draw grid lines
++    for(var j=0; j<2; ++j) {
++      var u = (i + 1 + j) % 3
++      var v = (i + 1 + (j^1)) % 3
++      if(this.gridEnable[u]) {
++        this._lines.drawGrid(u, v, this.bounds, x, this.gridColor[u], this.gridWidth[u]*this.pixelRatio)
++      }
++    }
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[4]  = a[4];
+-        out[5]  = a[5];
+-        out[6]  = a[6];
+-        out[7]  = a[7];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
++    //Draw zero lines (need to do this AFTER all grid lines are drawn)
++    for(var j=0; j<2; ++j) {
++      var u = (i + 1 + j) % 3
++      var v = (i + 1 + (j^1)) % 3
++      if(this.zeroEnable[v]) {
++        //Check if zero line in bounds
++        if(bounds[0][v] <= 0 && bounds[1][v] >= 0) {
++          this._lines.drawZero(u, v, this.bounds, x, this.zeroLineColor[v], this.zeroLineWidth[v]*this.pixelRatio)
++        }
++      }
+     }
++  }
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c - a20 * s;
+-    out[1] = a01 * c - a21 * s;
+-    out[2] = a02 * c - a22 * s;
+-    out[3] = a03 * c - a23 * s;
+-    out[8] = a00 * s + a20 * c;
+-    out[9] = a01 * s + a21 * c;
+-    out[10] = a02 * s + a22 * c;
+-    out[11] = a03 * s + a23 * c;
+-    return out;
+-};
+-},{}],150:[function(require,module,exports){
+-module.exports = rotateZ;
++  //Then draw axis lines and tick marks
++  for(var i=0; i<3; ++i) {
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-function rotateZ(out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7];
++    //Draw axis lines
++    if(this.lineEnable[i]) {
++      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].primalOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
++    }
++    if(this.lineMirror[i]) {
++      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].mirrorOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
++    }
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[8]  = a[8];
+-        out[9]  = a[9];
+-        out[10] = a[10];
+-        out[11] = a[11];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
++    //Compute minor axes
++    var primalMinor = copyVec3(PRIMAL_MINOR, lineOffset[i].primalMinor)
++    var mirrorMinor = copyVec3(MIRROR_MINOR, lineOffset[i].mirrorMinor)
++    var tickLength  = this.lineTickLength
++    var op = 0
++    for(var j=0; j<3; ++j) {
++      var scaleFactor = pixelScaleF / model[5*j]
++      primalMinor[j] *= tickLength[j] * scaleFactor
++      mirrorMinor[j] *= tickLength[j] * scaleFactor
+     }
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c + a10 * s;
+-    out[1] = a01 * c + a11 * s;
+-    out[2] = a02 * c + a12 * s;
+-    out[3] = a03 * c + a13 * s;
+-    out[4] = a10 * c - a00 * s;
+-    out[5] = a11 * c - a01 * s;
+-    out[6] = a12 * c - a02 * s;
+-    out[7] = a13 * c - a03 * s;
+-    return out;
+-};
+-},{}],151:[function(require,module,exports){
+-module.exports = scale;
++    //Draw axis line ticks
++    if(this.lineTickEnable[i]) {
++      this._lines.drawAxisTicks(i, lineOffset[i].primalOffset, primalMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
++    }
++    if(this.lineTickMirror[i]) {
++      this._lines.drawAxisTicks(i, lineOffset[i].mirrorOffset, mirrorMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
++    }
++  }
+ 
+-/**
+- * Scales the mat4 by the dimensions in the given vec3
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- **/
+-function scale(out, a, v) {
+-    var x = v[0], y = v[1], z = v[2];
++  //Draw text sprites
++  this._text.bind(
++    model,
++    view,
++    projection,
++    this.pixelRatio)
+ 
+-    out[0] = a[0] * x;
+-    out[1] = a[1] * x;
+-    out[2] = a[2] * x;
+-    out[3] = a[3] * x;
+-    out[4] = a[4] * y;
+-    out[5] = a[5] * y;
+-    out[6] = a[6] * y;
+-    out[7] = a[7] * y;
+-    out[8] = a[8] * z;
+-    out[9] = a[9] * z;
+-    out[10] = a[10] * z;
+-    out[11] = a[11] * z;
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
+-},{}],152:[function(require,module,exports){
+-module.exports = translate;
++  for(var i=0; i<3; ++i) {
+ 
+-/**
+- * Translate a mat4 by the given vector
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
+- */
+-function translate(out, a, v) {
+-    var x = v[0], y = v[1], z = v[2],
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23;
++    var minor      = lineOffset[i].primalMinor
++    var offset     = copyVec3(PRIMAL_OFFSET, lineOffset[i].primalOffset)
+ 
+-    if (a === out) {
+-        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
+-        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
+-        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
+-        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
+-    } else {
+-        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++    for(var j=0; j<3; ++j) {
++      if(this.lineTickEnable[i]) {
++        offset[j] += pixelScaleF * minor[j] * Math.max(this.lineTickLength[j], 0)  / model[5*j]
++      }
++    }
+ 
+-        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
+-        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
+-        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
++    //Draw tick text
++    if(this.tickEnable[i]) {
+ 
+-        out[12] = a00 * x + a10 * y + a20 * z + a[12];
+-        out[13] = a01 * x + a11 * y + a21 * z + a[13];
+-        out[14] = a02 * x + a12 * y + a22 * z + a[14];
+-        out[15] = a03 * x + a13 * y + a23 * z + a[15];
++      //Add tick padding
++      for(var j=0; j<3; ++j) {
++        offset[j] += pixelScaleF * minor[j] * this.tickPad[j] / model[5*j]
++      }
++
++      //Draw axis
++      this._text.drawTicks(
++        i,
++        this.tickSize[i],
++        this.tickAngle[i],
++        offset,
++        this.tickColor[i])
+     }
+ 
+-    return out;
+-};
+-},{}],153:[function(require,module,exports){
+-module.exports = transpose;
++    //Draw labels
++    if(this.labelEnable[i]) {
+ 
+-/**
+- * Transpose the values of a mat4
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-function transpose(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a01 = a[1], a02 = a[2], a03 = a[3],
+-            a12 = a[6], a13 = a[7],
+-            a23 = a[11];
++      //Add label padding
++      for(var j=0; j<3; ++j) {
++        offset[j] += pixelScaleF * minor[j] * this.labelPad[j] / model[5*j]
++      }
++      offset[i] += 0.5 * (bounds[0][i] + bounds[1][i])
+ 
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a01;
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a02;
+-        out[9] = a12;
+-        out[11] = a[14];
+-        out[12] = a03;
+-        out[13] = a13;
+-        out[14] = a23;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a[1];
+-        out[5] = a[5];
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a[2];
+-        out[9] = a[6];
+-        out[10] = a[10];
+-        out[11] = a[14];
+-        out[12] = a[3];
+-        out[13] = a[7];
+-        out[14] = a[11];
+-        out[15] = a[15];
++      //Draw axis
++      this._text.drawLabel(
++        i,
++        this.labelSize[i],
++        this.labelAngle[i],
++        offset,
++        this.labelColor[i])
+     }
+-    
+-    return out;
+-};
+-},{}],154:[function(require,module,exports){
++  }
++}
++
++proto.dispose = function() {
++  this._text.dispose()
++  this._lines.dispose()
++  this._background.dispose()
++  this._lines = null
++  this._text = null
++  this._background = null
++  this.gl = null
++}
++
++function createAxes(gl, options) {
++  var axes = new Axes(gl)
++  axes.update(options)
++  return axes
++}
++
++},{"./lib/background.js":114,"./lib/cube.js":115,"./lib/lines.js":116,"./lib/text.js":118,"./lib/ticks.js":119}],114:[function(require,module,exports){
+ 'use strict'
+ 
+-var barycentric            = require('barycentric')
+-var closestPointToTriangle = require('polytope-closest-point/lib/closest_point_2d.js')
++module.exports = createBackgroundCube
+ 
+-module.exports = closestPointToPickLocation
++var createBuffer = require('gl-buffer')
++var createVAO    = require('gl-vao')
++var createShader = require('./shaders').bg
+ 
+-function xformMatrix(m, v) {
+-  var out = [0,0,0,0]
+-  for(var i=0; i<4; ++i) {
+-    for(var j=0; j<4; ++j) {
+-      out[j] += m[4*i + j] * v[i]
+-    }
+-  }
+-  return out
++function BackgroundCube(gl, buffer, vao, shader) {
++  this.gl = gl
++  this.buffer = buffer
++  this.vao = vao
++  this.shader = shader
+ }
+ 
+-function projectVertex(v, model, view, projection, resolution) {
+-  var p = xformMatrix(projection,
+-            xformMatrix(view,
+-              xformMatrix(model, [v[0], v[1], v[2], 1])))
++var proto = BackgroundCube.prototype
++
++proto.draw = function(model, view, projection, bounds, enable, colors) {
++  var needsBG = false
+   for(var i=0; i<3; ++i) {
+-    p[i] /= p[3]
++    needsBG = needsBG || enable[i]
++  }
++  if(!needsBG) {
++    return
+   }
+-  return [ 0.5 * resolution[0] * (1.0+p[0]), 0.5 * resolution[1] * (1.0-p[1]) ]
+-}
+ 
+-function barycentricCoord(simplex, point) {
+-  if(simplex.length === 2) {
+-    var d0 = 0.0
+-    var d1 = 0.0
+-    for(var i=0; i<2; ++i) {
+-      d0 += Math.pow(point[i] - simplex[0][i], 2)
+-      d1 += Math.pow(point[i] - simplex[1][i], 2)
+-    }
+-    d0 = Math.sqrt(d0)
+-    d1 = Math.sqrt(d1)
+-    if(d0+d1 < 1e-6) {
+-      return [1,0]
+-    }
+-    return [d1/(d0+d1),d0/(d1+d0)]
+-  } else if(simplex.length === 3) {
+-    var closestPoint = [0,0]
+-    closestPointToTriangle(simplex[0], simplex[1], simplex[2], point, closestPoint)
+-    return barycentric(simplex, closestPoint)
++  var gl = this.gl
++
++  gl.enable(gl.POLYGON_OFFSET_FILL)
++  gl.polygonOffset(1, 2)
++
++  this.shader.bind()
++  this.shader.uniforms = {
++    model: model,
++    view: view,
++    projection: projection,
++    bounds: bounds,
++    enable: enable,
++    colors: colors
+   }
+-  return []
++  this.vao.bind()
++  this.vao.draw(this.gl.TRIANGLES, 36)
++
++  gl.disable(gl.POLYGON_OFFSET_FILL)
+ }
+ 
+-function interpolate(simplex, weights) {
+-  var result = [0,0,0]
+-  for(var i=0; i<simplex.length; ++i) {
+-    var p = simplex[i]
+-    var w = weights[i]
+-    for(var j=0; j<3; ++j) {
+-      result[j] += w * p[j]
++proto.dispose = function() {
++  this.vao.dispose()
++  this.buffer.dispose()
++  this.shader.dispose()
++}
++
++function createBackgroundCube(gl) {
++  //Create cube vertices
++  var vertices = []
++  var indices  = []
++  var ptr = 0
++  for(var d=0; d<3; ++d) {
++    var u = (d+1) % 3
++    var v = (d+2) % 3
++    var x = [0,0,0]
++    var c = [0,0,0]
++    for(var s=-1; s<=1; s+=2) {
++      indices.push(ptr,   ptr+2, ptr+1,
++                   ptr+1, ptr+2, ptr+3)
++      x[d] = s
++      c[d] = s
++      for(var i=-1; i<=1; i+=2) {
++        x[u] = i
++        for(var j=-1; j<=1; j+=2) {
++          x[v] = j
++          vertices.push(x[0], x[1], x[2],
++                        c[0], c[1], c[2])
++          ptr += 1
++        }
++      }
++      //Swap u and v
++      var tt = u
++      u = v
++      v = tt
+     }
+   }
+-  return result
++
++  //Allocate buffer and vertex array
++  var buffer = createBuffer(gl, new Float32Array(vertices))
++  var elements = createBuffer(gl, new Uint16Array(indices), gl.ELEMENT_ARRAY_BUFFER)
++  var vao = createVAO(gl, [
++      {
++        buffer: buffer,
++        type: gl.FLOAT,
++        size: 3,
++        offset: 0,
++        stride: 24
++      },
++      {
++        buffer: buffer,
++        type: gl.FLOAT,
++        size: 3,
++        offset: 12,
++        stride: 24
++      }
++    ], elements)
++
++  //Create shader object
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  shader.attributes.normal.location = 1
++
++  return new BackgroundCube(gl, buffer, vao, shader)
+ }
+ 
+-function closestPointToPickLocation(simplex, pixelCoord, model, view, projection, resolution) {
+-  if(simplex.length === 1) {
+-    return [0, simplex[0].slice()]
+-  }
+-  var simplex2D = new Array(simplex.length)
+-  for(var i=0; i<simplex.length; ++i) {
+-    simplex2D[i] = projectVertex(simplex[i], model, view, projection, resolution);
++},{"./shaders":117,"gl-buffer":121,"gl-vao":206}],115:[function(require,module,exports){
++"use strict"
++
++module.exports = getCubeEdges
++
++var bits      = require('bit-twiddle')
++var multiply  = require('gl-mat4/multiply')
++var invert    = require('gl-mat4/invert')
++var splitPoly = require('split-polygon')
++var orient    = require('robust-orientation')
++
++var mvp        = new Array(16)
++var imvp       = new Array(16)
++var pCubeVerts = new Array(8)
++var cubeVerts  = new Array(8)
++var x          = new Array(3)
++var zero3      = [0,0,0]
++
++;(function() {
++  for(var i=0; i<8; ++i) {
++    pCubeVerts[i] =[1,1,1,1]
++    cubeVerts[i] = [1,1,1]
+   }
++})()
+ 
+-  var closestIndex = 0
+-  var closestDist  = Infinity
+-  for(var i=0; i<simplex2D.length; ++i) {
+-    var d2 = 0.0
+-    for(var j=0; j<2; ++j) {
+-      d2 += Math.pow(simplex2D[i][j] - pixelCoord[j], 2)
+-    }
+-    if(d2 < closestDist) {
+-      closestDist  = d2
+-      closestIndex = i
++
++function transformHg(result, x, mat) {
++  for(var i=0; i<4; ++i) {
++    result[i] = mat[12+i]
++    for(var j=0; j<3; ++j) {
++      result[i] += x[j]*mat[4*j+i]
+     }
+   }
++}
+ 
+-  var weights = barycentricCoord(simplex2D, pixelCoord)
+-  var s = 0.0
+-  for(var i=0; i<3; ++i) {
+-    if(weights[i] < -0.001 ||
+-       weights[i] > 1.0001) {
+-      return null
++var FRUSTUM_PLANES = [
++  [ 0, 0, 1, 0, 0],
++  [ 0, 0,-1, 1, 0],
++  [ 0,-1, 0, 1, 0],
++  [ 0, 1, 0, 1, 0],
++  [-1, 0, 0, 1, 0],
++  [ 1, 0, 0, 1, 0]
++]
++
++function polygonArea(p) {
++  for(var i=0; i<FRUSTUM_PLANES.length; ++i) {
++    p = splitPoly.positive(p, FRUSTUM_PLANES[i])
++    if(p.length < 3) {
++      return 0
+     }
+-    s += weights[i]
+-  }
+-  if(Math.abs(s - 1.0) > 0.001) {
+-    return null
+   }
+-  return [closestIndex, interpolate(simplex, weights), weights]
+-}
+-},{"barycentric":157,"polytope-closest-point/lib/closest_point_2d.js":159}],155:[function(require,module,exports){
+ 
++  var base = p[0]
++  var ax = base[0] / base[3]
++  var ay = base[1] / base[3]
++  var area = 0.0
++  for(var i=1; i+1<p.length; ++i) {
++    var b = p[i]
++    var c = p[i+1]
+ 
+-var triVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, normal;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model\n           , view\n           , projection;\nuniform vec3 eyePosition\n           , lightPosition;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec4 m_position  = model * vec4(position, 1.0);\n  vec4 t_position  = view * m_position;\n  gl_Position      = projection * t_position;\n  f_color          = color;\n  f_normal         = normal;\n  f_data           = position;\n  f_eyeDirection   = eyePosition   - position;\n  f_lightDirection = lightPosition - position;\n  f_uv             = uv;\n}"
+-var triFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat cookTorranceSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness,\n  float fresnel) {\n\n  float VdotN = max(dot(viewDirection, surfaceNormal), 0.0);\n  float LdotN = max(dot(lightDirection, surfaceNormal), 0.0);\n\n  //Half angle vector\n  vec3 H = normalize(lightDirection + viewDirection);\n\n  //Geometric term\n  float NdotH = max(dot(surfaceNormal, H), 0.0);\n  float VdotH = max(dot(viewDirection, H), 0.000001);\n  float LdotH = max(dot(lightDirection, H), 0.000001);\n  float G1 = (2.0 * NdotH * VdotN) / VdotH;\n  float G2 = (2.0 * NdotH * LdotN) / LdotH;\n  float G = min(1.0, min(G1, G2));\n  \n  //Distribution term\n  float D = beckmannDistribution_2_0(NdotH, roughness);\n\n  //Fresnel term\n  float F = pow(1.0 - VdotN, fresnel);\n\n  //Multiply terms and done\n  return  G * F * D / max(3.14159265 * VdotN, 0.000001);\n}\n\n\n\nuniform vec3 clipBounds[2];\nuniform float roughness\n            , fresnel\n            , kambient\n            , kdiffuse\n            , kspecular\n            , opacity;\nuniform sampler2D texture;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(f_normal);\n  vec3 L = normalize(f_lightDirection);\n  vec3 V = normalize(f_eyeDirection);\n  \n  if(!gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = cookTorranceSpecular_1_1(L, V, N, roughness, fresnel);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = f_color * texture2D(texture, f_uv);\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = litColor * opacity;\n}"
+-var edgeVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model, view, projection;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_color = color;\n  f_data  = position;\n  f_uv    = uv;\n}"
+-var edgeFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 clipBounds[2];\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
+-var pointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\nattribute float pointSize;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position = projection * view * model * vec4(position, 1.0);\n  }\n  gl_PointSize = pointSize;\n  f_color = color;\n  f_uv = uv;\n}"
+-var pointFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec2 pointR = gl_PointCoord.xy - vec2(0.5,0.5);\n  if(dot(pointR, pointR) > 0.25) {\n    discard;\n  }\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
+-var pickVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_id        = id;\n  f_position  = position;\n}"
+-var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3  clipBounds[2];\nuniform float pickId;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(f_position, clipBounds[0])) || \n     any(greaterThan(f_position, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId, f_id.xyz);\n}"
+-var pickPointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3  position;\nattribute float pointSize;\nattribute vec4  id;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position  = projection * view * model * vec4(position, 1.0);\n    gl_PointSize = pointSize;\n  }\n  f_id         = id;\n  f_position   = position;\n}"
+-var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n}"
+-var contourFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 contourColor;\n\nvoid main() {\n  gl_FragColor = vec4(contourColor,1);\n}\n"
++    var bx = b[0]/b[3]
++    var by = b[1]/b[3]
++    var cx = c[0]/c[3]
++    var cy = c[1]/c[3]
+ 
+-exports.meshShader = {
+-  vertex:   triVertSrc,
+-  fragment: triFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'},
+-    {name: 'color', type: 'vec4'},
+-    {name: 'uv', type: 'vec2'}
+-  ]
+-}
+-exports.wireShader = {
+-  vertex:   edgeVertSrc,
+-  fragment: edgeFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'color', type: 'vec4'},
+-    {name: 'uv', type: 'vec2'}
+-  ]
+-}
+-exports.pointShader = {
+-  vertex:   pointVertSrc,
+-  fragment: pointFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'color', type: 'vec4'},
+-    {name: 'uv', type: 'vec2'},
+-    {name: 'pointSize', type: 'float'}
+-  ]
+-}
+-exports.pickShader = {
+-  vertex:   pickVertSrc,
+-  fragment: pickFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'id', type: 'vec4'}
+-  ]
+-}
+-exports.pointPickShader = {
+-  vertex:   pickPointVertSrc,
+-  fragment: pickFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'pointSize', type: 'float'},
+-    {name: 'id', type: 'vec4'}
+-  ]
+-}
+-exports.contourShader = {
+-  vertex:   contourVertSrc,
+-  fragment: contourFragSrc,
+-  attributes: [
+-    {name: 'position', type: 'vec3'}
+-  ]
++    var ux = bx - ax
++    var uy = by - ay
++
++    var vx = cx - ax
++    var vy = cy - ay
++
++    area += Math.abs(ux * vy - uy * vx)
++  }
++
++  return area
+ }
+ 
+-},{}],156:[function(require,module,exports){
+-'use strict'
++var CUBE_EDGES = [1,1,1]
++var CUBE_AXIS  = [0,0,0]
++var CUBE_RESULT = {
++  cubeEdges: CUBE_EDGES,
++  axis: CUBE_AXIS
++}
+ 
+-var DEFAULT_VERTEX_NORMALS_EPSILON = 1e-6; // may be too large if triangles are very small
+-var DEFAULT_FACE_NORMALS_EPSILON = 1e-6;
++function getCubeEdges(model, view, projection, bounds) {
+ 
+-var createShader  = require('gl-shader')
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var createTexture = require('gl-texture2d')
+-var normals       = require('normals')
+-var multiply      = require('gl-mat4/multiply')
+-var invert        = require('gl-mat4/invert')
+-var ndarray       = require('ndarray')
+-var colormap      = require('colormap')
+-var getContour    = require('simplicial-complex-contour')
+-var pool          = require('typedarray-pool')
+-var shaders       = require('./lib/shaders')
+-var closestPoint  = require('./lib/closest-point')
++  //Concatenate matrices
++  multiply(mvp, view, model)
++  multiply(mvp, projection, mvp)
++  
++  //First project cube vertices
++  var ptr = 0
++  for(var i=0; i<2; ++i) {
++    x[2] = bounds[i][2]
++    for(var j=0; j<2; ++j) {
++      x[1] = bounds[j][1]
++      for(var k=0; k<2; ++k) {
++        x[0] = bounds[k][0]
++        transformHg(pCubeVerts[ptr], x, mvp)
++        ptr += 1
++      }
++    }
++  }
+ 
+-var meshShader    = shaders.meshShader
+-var wireShader    = shaders.wireShader
+-var pointShader   = shaders.pointShader
+-var pickShader    = shaders.pickShader
+-var pointPickShader = shaders.pointPickShader
+-var contourShader = shaders.contourShader
++  //Classify camera against cube faces
++  var closest = -1
+ 
+-var identityMatrix = [
+-  1,0,0,0,
+-  0,1,0,0,
+-  0,0,1,0,
+-  0,0,0,1]
++  for(var i=0; i<8; ++i) {
++    var w = pCubeVerts[i][3]
++    for(var l=0; l<3; ++l) {
++      cubeVerts[i][l] = pCubeVerts[i][l] / w
++    }
++    if(w < 0) {
++      if(closest < 0) {
++        closest = i
++      } else if(cubeVerts[i][2] < cubeVerts[closest][2]) {
++        closest = i
++      }
++    }    
++  }
+ 
+-function SimplicialMesh(gl
+-  , texture
+-  , triShader
+-  , lineShader
+-  , pointShader
+-  , pickShader
+-  , pointPickShader
+-  , contourShader
+-  , trianglePositions
+-  , triangleIds
+-  , triangleColors
+-  , triangleUVs
+-  , triangleNormals
+-  , triangleVAO
+-  , edgePositions
+-  , edgeIds
+-  , edgeColors
+-  , edgeUVs
+-  , edgeVAO
+-  , pointPositions
+-  , pointIds
+-  , pointColors
+-  , pointUVs
+-  , pointSizes
+-  , pointVAO
+-  , contourPositions
+-  , contourVAO) {
++  if(closest < 0) {
++    closest = 0
++    for(var d=0; d<3; ++d) {
++      var u = (d+2) % 3
++      var v = (d+1) % 3
++      var o0 = -1
++      var o1 = -1
++      for(var s=0; s<2; ++s) {
++        var f0 = (s<<d)
++        var f1 = f0 + (s << u) + ((1-s) << v)
++        var f2 = f0 + ((1-s) << u) + (s << v)
++        if(orient(cubeVerts[f0], cubeVerts[f1], cubeVerts[f2], zero3) < 0) {
++          continue
++        }
++        if(s) {
++          o0 = 1
++        } else {
++          o1 = 1
++        }
++      }
++      if(o0 < 0 || o1 < 0) {
++        if(o1 > o0) {
++          closest |= 1<<d
++        }
++        continue
++      } 
++      for(var s=0; s<2; ++s) {
++        var f0 = (s<<d)
++        var f1 = f0 + (s << u) + ((1-s) << v)
++        var f2 = f0 + ((1-s) << u) + (s << v)    
++        var o = polygonArea([
++            pCubeVerts[f0], 
++            pCubeVerts[f1], 
++            pCubeVerts[f2], 
++            pCubeVerts[f0+(1<<u)+(1<<v)]])
++        if(s) {
++          o0 = o
++        } else {
++          o1 = o
++        }
++      }
++      if(o1 > o0) {
++        closest |= 1<<d
++        continue
++      }
++    }
++  }
+ 
+-  this.gl                = gl
+-  this.cells             = []
+-  this.positions         = []
+-  this.intensity         = []
+-  this.texture           = texture
+-  this.dirty             = true
++  var farthest = 7^closest
+ 
+-  this.triShader         = triShader
+-  this.lineShader        = lineShader
+-  this.pointShader       = pointShader
+-  this.pickShader        = pickShader
+-  this.pointPickShader   = pointPickShader
+-  this.contourShader     = contourShader
++  //Find lowest vertex which is not closest closest
++  var bottom = -1
++  for(var i=0; i<8; ++i) {
++    if(i === closest || i === farthest) {
++      continue
++    }
++    if(bottom < 0) {
++      bottom = i
++    } else if(cubeVerts[bottom][1] > cubeVerts[i][1]) {
++      bottom = i
++    }
++  }
+ 
+-  this.trianglePositions = trianglePositions
+-  this.triangleColors    = triangleColors
+-  this.triangleNormals   = triangleNormals
+-  this.triangleUVs       = triangleUVs
+-  this.triangleIds       = triangleIds
+-  this.triangleVAO       = triangleVAO
+-  this.triangleCount     = 0
++  //Find left/right neighbors of bottom vertex
++  var left = -1
++  for(var i=0; i<3; ++i) {
++    var idx = bottom ^ (1<<i)
++    if(idx === closest || idx === farthest) {
++      continue
++    }
++    if(left < 0) {
++      left = idx
++    }
++    var v = cubeVerts[idx]
++    if(v[0] < cubeVerts[left][0]) {
++      left = idx
++    }
++  }
++  var right = -1
++  for(var i=0; i<3; ++i) {
++    var idx = bottom ^ (1<<i)
++    if(idx === closest || idx === farthest || idx === left) {
++      continue
++    }
++    if(right < 0) {
++      right = idx
++    }
++    var v = cubeVerts[idx]
++    if(v[0] > cubeVerts[right][0]) {
++      right = idx
++    }
++  }
+ 
+-  this.lineWidth         = 1
+-  this.edgePositions     = edgePositions
+-  this.edgeColors        = edgeColors
+-  this.edgeUVs           = edgeUVs
+-  this.edgeIds           = edgeIds
+-  this.edgeVAO           = edgeVAO
+-  this.edgeCount         = 0
++  //Determine edge axis coordinates
++  var cubeEdges = CUBE_EDGES
++  cubeEdges[0] = cubeEdges[1] = cubeEdges[2] = 0
++  cubeEdges[bits.log2(left^bottom)] = bottom&left
++  cubeEdges[bits.log2(bottom^right)] = bottom&right
++  var top = right ^ 7
++  if(top === closest || top === farthest) {
++    top = left ^ 7
++    cubeEdges[bits.log2(right^top)] = top&right
++  } else {
++    cubeEdges[bits.log2(left^top)] = top&left
++  }
+ 
+-  this.pointPositions    = pointPositions
+-  this.pointColors       = pointColors
+-  this.pointUVs          = pointUVs
+-  this.pointSizes        = pointSizes
+-  this.pointIds          = pointIds
+-  this.pointVAO          = pointVAO
+-  this.pointCount        = 0
++  //Determine visible faces
++  var axis = CUBE_AXIS
++  var cutCorner = closest
++  for(var d=0; d<3; ++d) {
++    if(cutCorner & (1<<d)) {
++      axis[d] = -1
++    } else {
++      axis[d] = 1
++    }
++  }
+ 
+-  this.contourLineWidth  = 1
+-  this.contourPositions  = contourPositions
+-  this.contourVAO        = contourVAO
+-  this.contourCount      = 0
+-  this.contourColor      = [0,0,0]
+-  this.contourEnable     = true
++  //Return result
++  return CUBE_RESULT
++}
++},{"bit-twiddle":49,"gl-mat4/invert":142,"gl-mat4/multiply":144,"robust-orientation":418,"split-polygon":436}],116:[function(require,module,exports){
++'use strict'
+ 
+-  this.pickId            = 1
+-  this.bounds            = [
+-    [ Infinity, Infinity, Infinity],
+-    [-Infinity,-Infinity,-Infinity] ]
+-  this.clipBounds        = [
+-    [-Infinity,-Infinity,-Infinity],
+-    [ Infinity, Infinity, Infinity] ]
++module.exports    = createLines
+ 
+-  this.lightPosition = [1e5, 1e5, 0]
+-  this.ambientLight  = 0.8
+-  this.diffuseLight  = 0.8
+-  this.specularLight = 2.0
+-  this.roughness     = 0.5
+-  this.fresnel       = 1.5
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var createShader  = require('./shaders').line
+ 
+-  this.opacity       = 1.0
++var MAJOR_AXIS = [0,0,0]
++var MINOR_AXIS = [0,0,0]
++var SCREEN_AXIS = [0,0,0]
++var OFFSET_VEC = [0,0,0]
++var SHAPE = [1,1]
+ 
+-  this._model       = identityMatrix
+-  this._view        = identityMatrix
+-  this._projection  = identityMatrix
+-  this._resolution  = [1,1]
++function zeroVec(a) {
++  a[0] = a[1] = a[2] = 0
++  return a
+ }
+ 
+-var proto = SimplicialMesh.prototype
+-
+-proto.isOpaque = function() {
+-  return this.opacity >= 1
++function copyVec(a,b) {
++  a[0] = b[0]
++  a[1] = b[1]
++  a[2] = b[2]
++  return a
+ }
+ 
+-proto.isTransparent = function() {
+-  return this.opacity < 1
++function Lines(gl, vertBuffer, vao, shader, tickCount, tickOffset, gridCount, gridOffset) {
++  this.gl         = gl
++  this.vertBuffer = vertBuffer
++  this.vao        = vao
++  this.shader     = shader
++  this.tickCount  = tickCount
++  this.tickOffset = tickOffset
++  this.gridCount  = gridCount
++  this.gridOffset = gridOffset
+ }
+ 
+-proto.pickSlots = 1
++var proto = Lines.prototype
+ 
+-proto.setPickBase = function(id) {
+-  this.pickId = id
++proto.bind = function(model, view, projection) {
++  this.shader.bind()
++  this.shader.uniforms.model = model
++  this.shader.uniforms.view = view
++  this.shader.uniforms.projection = projection
++
++  SHAPE[0] = this.gl.drawingBufferWidth
++  SHAPE[1] = this.gl.drawingBufferHeight
++
++  this.shader.uniforms.screenShape = SHAPE
++  this.vao.bind()
+ }
+ 
+-function genColormap(param) {
+-  var colors = colormap({
+-      colormap: param
+-    , nshades:  256
+-    , format:  'rgba'
+-  })
++proto.drawAxisLine = function(j, bounds, offset, color, lineWidth) {
++  var minorAxis = zeroVec(MINOR_AXIS)
++  this.shader.uniforms.majorAxis = MINOR_AXIS
+ 
+-  var result = new Uint8Array(256*4)
+-  for(var i=0; i<256; ++i) {
+-    var c = colors[i]
+-    for(var j=0; j<3; ++j) {
+-      result[4*i+j] = c[j]
+-    }
+-    result[4*i+3] = c[3]*255
+-  }
++  minorAxis[j] = bounds[1][j] - bounds[0][j]
++  this.shader.uniforms.minorAxis = minorAxis
+ 
+-  return ndarray(result, [256,256,4], [4,0,1])
+-}
++  var noffset = copyVec(OFFSET_VEC, offset)
++  noffset[j] += bounds[0][j]
++  this.shader.uniforms.offset = noffset
+ 
+-function unpackIntensity(cells, numVerts, cellIntensity) {
+-  var result = new Array(numVerts)
+-  for(var i=0; i<numVerts; ++i) {
+-    result[i] = 0
+-  }
+-  var numCells = cells.length
+-  for(var i=0; i<numCells; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      result[c[j]] = cellIntensity[i]
+-    }
+-  }
+-  return result
+-}
++  this.shader.uniforms.lineWidth = lineWidth
+ 
+-function takeZComponent(array) {
+-  var n = array.length
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = array[i][2]
+-  }
+-  return result
++  this.shader.uniforms.color = color
++
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[(j+2)%3] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.vao.draw(this.gl.TRIANGLES, 6)
++
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[(j+1)%3] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.vao.draw(this.gl.TRIANGLES, 6)
+ }
+ 
+-proto.highlight = function(selection) {
+-  if(!selection || !this.contourEnable) {
+-    this.contourCount = 0
++proto.drawAxisTicks = function(j, offset, minorAxis, color, lineWidth) {
++  if(!this.tickCount[j]) {
+     return
+   }
+-  var level = getContour(this.cells, this.intensity, selection.intensity)
+-  var cells         = level.cells
+-  var vertexIds     = level.vertexIds
+-  var vertexWeights = level.vertexWeights
+-  var numCells = cells.length
+-  var result = pool.mallocFloat32(2 * 3 * numCells)
+-  var ptr = 0
+-  for(var i=0; i<numCells; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<2; ++j) {
+-      var v = c[0]
+-      if(c.length === 2) {
+-        v = c[j]
+-      }
+-      var a = vertexIds[v][0]
+-      var b = vertexIds[v][1]
+-      var w = vertexWeights[v]
+-      var wi = 1.0 - w
+-      var pa = this.positions[a]
+-      var pb = this.positions[b]
+-      for(var k=0; k<3; ++k) {
+-        result[ptr++] = w * pa[k] + wi * pb[k]
+-      }
+-    }
+-  }
+-  this.contourCount = (ptr / 3)|0
+-  this.contourPositions.update(result.subarray(0, ptr))
+-  pool.free(result)
+-}
+-
+-proto.update = function(params) {
+-  params = params || {}
+-  var gl = this.gl
+ 
+-  this.dirty = true
+-
+-  if('contourEnable' in params) {
+-    this.contourEnable = params.contourEnable
+-  }
+-  if('contourColor' in params) {
+-    this.contourColor = params.contourColor
+-  }
+-  if('lineWidth' in params) {
+-    this.lineWidth = params.lineWidth
+-  }
+-  if('lightPosition' in params) {
+-    this.lightPosition = params.lightPosition
+-  }
+-  if('opacity' in params) {
+-    this.opacity = params.opacity
+-  }
+-  if('ambient' in params) {
+-    this.ambientLight  = params.ambient
+-  }
+-  if('diffuse' in params) {
+-    this.diffuseLight = params.diffuse
+-  }
+-  if('specular' in params) {
+-    this.specularLight = params.specular
+-  }
+-  if('roughness' in params) {
+-    this.roughness = params.roughness
+-  }
+-  if('fresnel' in params) {
+-    this.fresnel = params.fresnel
+-  }
++  var majorAxis = zeroVec(MAJOR_AXIS)
++  majorAxis[j]  = 1
++  this.shader.uniforms.majorAxis = majorAxis
++  this.shader.uniforms.offset    = offset
++  this.shader.uniforms.minorAxis = minorAxis
++  this.shader.uniforms.color     = color
++  this.shader.uniforms.lineWidth = lineWidth
+ 
+-  if(params.texture) {
+-    this.texture.dispose()
+-    this.texture = createTexture(gl, params.texture)
+-  } else if (params.colormap) {
+-    this.texture.shape = [256,256]
+-    this.texture.minFilter = gl.LINEAR_MIPMAP_LINEAR
+-    this.texture.magFilter = gl.LINEAR
+-    this.texture.setPixels(genColormap(params.colormap))
+-    this.texture.generateMipmap()
+-  }
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[j] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.vao.draw(this.gl.TRIANGLES, this.tickCount[j], this.tickOffset[j])
++}
+ 
+-  var cells = params.cells
+-  var positions = params.positions
+ 
+-  if(!positions || !cells) {
++proto.drawGrid = function(i, j, bounds, offset, color, lineWidth) {
++  if(!this.gridCount[i]) {
+     return
+   }
+ 
+-  var tPos = []
+-  var tCol = []
+-  var tNor = []
+-  var tUVs = []
+-  var tIds = []
++  var minorAxis = zeroVec(MINOR_AXIS)
++  minorAxis[j]  = bounds[1][j] - bounds[0][j]
++  this.shader.uniforms.minorAxis = minorAxis
+ 
+-  var ePos = []
+-  var eCol = []
+-  var eUVs = []
+-  var eIds = []
++  var noffset = copyVec(OFFSET_VEC, offset)
++  noffset[j] += bounds[0][j]
++  this.shader.uniforms.offset = noffset
+ 
+-  var pPos = []
+-  var pCol = []
+-  var pUVs = []
+-  var pSiz = []
+-  var pIds = []
++  var majorAxis = zeroVec(MAJOR_AXIS)
++  majorAxis[i]  = 1
++  this.shader.uniforms.majorAxis = majorAxis
+ 
+-  //Save geometry data for picking calculations
+-  this.cells     = cells
+-  this.positions = positions
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[i] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.shader.uniforms.lineWidth = lineWidth
+ 
+-  //Compute normals
+-  var vertexNormals = params.vertexNormals
+-  var cellNormals   = params.cellNormals
+-  var vertexNormalsEpsilon = params.vertexNormalsEpsilon === void(0) ? DEFAULT_VERTEX_NORMALS_EPSILON : params.vertexNormalsEpsilon
+-  var faceNormalsEpsilon = params.faceNormalsEpsilon === void(0) ? DEFAULT_FACE_NORMALS_EPSILON : params.faceNormalsEpsilon
+-  if(params.useFacetNormals && !cellNormals) {
+-    cellNormals = normals.faceNormals(cells, positions, faceNormalsEpsilon)
+-  }
+-  if(!cellNormals && !vertexNormals) {
+-    vertexNormals = normals.vertexNormals(cells, positions, vertexNormalsEpsilon)
+-  }
++  this.shader.uniforms.color = color
++  this.vao.draw(this.gl.TRIANGLES, this.gridCount[i], this.gridOffset[i])
++}
+ 
+-  //Compute colors
+-  var vertexColors    = params.vertexColors
+-  var cellColors      = params.cellColors
+-  var meshColor       = params.meshColor || [1,1,1,1]
++proto.drawZero = function(j, i, bounds, offset, color, lineWidth) {
++  var minorAxis = zeroVec(MINOR_AXIS)
++  this.shader.uniforms.majorAxis = minorAxis
+ 
+-  //UVs
+-  var vertexUVs       = params.vertexUVs
+-  var vertexIntensity = params.vertexIntensity
+-  var cellUVs         = params.cellUVs
+-  var cellIntensity   = params.cellIntensity
++  minorAxis[j] = bounds[1][j] - bounds[0][j]
++  this.shader.uniforms.minorAxis = minorAxis
+ 
+-  var intensityLo     = Infinity
+-  var intensityHi     = -Infinity
+-  if(!vertexUVs && !cellUVs) {
+-    if(vertexIntensity) {
+-      for(var i=0; i<vertexIntensity.length; ++i) {
+-        var f = vertexIntensity[i]
+-        intensityLo = Math.min(intensityLo, f)
+-        intensityHi = Math.max(intensityHi, f)
+-      }
+-    } else if(cellIntensity) {
+-      for(var i=0; i<cellIntensity.length; ++i) {
+-        var f = cellIntensity[i]
+-        intensityLo = Math.min(intensityLo, f)
+-        intensityHi = Math.max(intensityHi, f)
+-      }
+-    } else {
+-      for(var i=0; i<positions.length; ++i) {
+-        var f = positions[i][2]
+-        intensityLo = Math.min(intensityLo, f)
+-        intensityHi = Math.max(intensityHi, f)
+-      }
+-    }
+-  }
++  var noffset = copyVec(OFFSET_VEC, offset)
++  noffset[j] += bounds[0][j]
++  this.shader.uniforms.offset = noffset
+ 
+-  if(vertexIntensity) {
+-    this.intensity = vertexIntensity
+-  } else if(cellIntensity) {
+-    this.intensity = unpackIntensity(cells, positions.length, cellIntensity)
+-  } else {
+-    this.intensity = takeZComponent(positions)
+-  }
++  var screenAxis = zeroVec(SCREEN_AXIS)
++  screenAxis[i] = 1
++  this.shader.uniforms.screenAxis = screenAxis
++  this.shader.uniforms.lineWidth = lineWidth
+ 
+-  //Point size
+-  var pointSizes      = params.pointSizes
+-  var meshPointSize   = params.pointSize || 1.0
++  this.shader.uniforms.color = color
++  this.vao.draw(this.gl.TRIANGLES, 6)
++}
+ 
+-  //Update bounds
+-  this.bounds       = [[Infinity,Infinity,Infinity], [-Infinity,-Infinity,-Infinity]]
+-  for(var i=0; i<positions.length; ++i) {
+-    var p = positions[i]
+-    for(var j=0; j<3; ++j) {
+-      if(isNaN(p[j]) || !isFinite(p[j])) {
+-        continue
+-      }
+-      this.bounds[0][j] = Math.min(this.bounds[0][j], p[j])
+-      this.bounds[1][j] = Math.max(this.bounds[1][j], p[j])
+-    }
+-  }
++proto.dispose = function() {
++  this.vao.dispose()
++  this.vertBuffer.dispose()
++  this.shader.dispose()
++}
+ 
+-  //Pack cells into buffers
+-  var triangleCount = 0
+-  var edgeCount = 0
+-  var pointCount = 0
++function createLines(gl, bounds, ticks) {
++  var vertices    = []
++  var tickOffset  = [0,0,0]
++  var tickCount   = [0,0,0]
+ 
+-fill_loop:
+-  for(var i=0; i<cells.length; ++i) {
+-    var cell = cells[i]
+-    switch(cell.length) {
+-      case 1:
++  //Create grid lines for each axis/direction
++  var gridOffset = [0,0,0]
++  var gridCount  = [0,0,0]
+ 
+-        var v = cell[0]
+-        var p = positions[v]
++  //Add zero line
++  vertices.push(
++    0,0,1,   0,1,1,   0,0,-1,
++    0,0,-1,  0,1,1,   0,1,-1)
+ 
+-        //Check NaNs
+-        for(var j=0; j<3; ++j) {
+-          if(isNaN(p[j]) || !isFinite(p[j])) {
+-            continue fill_loop
+-          }
+-        }
++  for(var i=0; i<3; ++i) {
++    //Axis tick marks
++    var start = ((vertices.length / 3)|0)
++    for(var j=0; j<ticks[i].length; ++j) {
++      var x = +ticks[i][j].x
++      vertices.push(
++        x,0,1,   x,1,1,   x,0,-1,
++        x,0,-1,  x,1,1,   x,1,-1)
++    }
++    var end = ((vertices.length / 3)|0)
++    tickOffset[i] = start
++    tickCount[i]  = end - start
+ 
+-        pPos.push(p[0], p[1], p[2])
++    //Grid lines
++    var start = ((vertices.length / 3)|0)
++    for(var k=0; k<ticks[i].length; ++k) {
++      var x = +ticks[i][k].x
++      vertices.push(
++        x,0,1,   x,1,1,   x,0,-1,
++        x,0,-1,  x,1,1,   x,1,-1)
++    }
++    var end = ((vertices.length / 3)|0)
++    gridOffset[i] = start
++    gridCount[i]  = end - start
++  }
+ 
+-        var c
+-        if(vertexColors) {
+-          c = vertexColors[v]
+-        } else if(cellColors) {
+-          c = cellColors[i]
+-        } else {
+-          c = meshColor
+-        }
+-        if(c.length === 3) {
+-          pCol.push(c[0], c[1], c[2], 1)
+-        } else {
+-          pCol.push(c[0], c[1], c[2], c[3])
+-        }
++  //Create cube VAO
++  var vertBuf = createBuffer(gl, new Float32Array(vertices))
++  var vao = createVAO(gl, [
++    { "buffer": vertBuf,
++      "type": gl.FLOAT,
++      "size": 3,
++      "stride": 0,
++      "offset": 0
++    }
++  ])
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  return new Lines(gl, vertBuf, vao, shader, tickCount, tickOffset, gridCount, gridOffset)
++}
+ 
+-        var uv
+-        if(vertexUVs) {
+-          uv = vertexUVs[v]
+-        } else if(vertexIntensity) {
+-          uv = [
+-            (vertexIntensity[v] - intensityLo) /
+-            (intensityHi - intensityLo), 0]
+-        } else if(cellUVs) {
+-          uv = cellUVs[i]
+-        } else if(cellIntensity) {
+-          uv = [
+-            (cellIntensity[i] - intensityLo) /
+-            (intensityHi - intensityLo), 0]
+-        } else {
+-          uv = [
+-            (p[2] - intensityLo) /
+-            (intensityHi - intensityLo), 0]
+-        }
+-        pUVs.push(uv[0], uv[1])
++},{"./shaders":117,"gl-buffer":121,"gl-vao":206}],117:[function(require,module,exports){
++'use strict'
+ 
+-        if(pointSizes) {
+-          pSiz.push(pointSizes[v])
+-        } else {
+-          pSiz.push(meshPointSize)
+-        }
+ 
+-        pIds.push(i)
++var createShader = require('gl-shader')
+ 
+-        pointCount += 1
+-      break
++var lineVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, majorAxis, minorAxis, screenAxis;\nuniform float lineWidth;\nuniform vec2 screenShape;\n\nvec3 project(vec3 p) {\n  vec4 pp = projection * view * model * vec4(p, 1.0);\n  return pp.xyz / max(pp.w, 0.0001);\n}\n\nvoid main() {\n  vec3 major = position.x * majorAxis;\n  vec3 minor = position.y * minorAxis;\n\n  vec3 vPosition = major + minor + offset;\n  vec3 pPosition = project(vPosition);\n  vec3 offset = project(vPosition + screenAxis * position.z);\n\n  vec2 screen = normalize((offset - pPosition).xy * screenShape) / screenShape;\n\n  gl_Position = vec4(pPosition + vec3(0.5 * screen * lineWidth, 0), 1.0);\n}\n"
++var lineFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
++exports.line = function(gl) {
++  return createShader(gl, lineVert, lineFrag, null, [
++    {name: 'position', type: 'vec3'}
++  ])
++}
+ 
+-      case 2:
++var textVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, axis;\nuniform float scale, angle, pixelScale;\nuniform vec2 resolution;\n\nvoid main() {  \n  //Compute plane offset\n  vec2 planeCoord = position.xy * pixelScale;\n  mat2 planeXform = scale * mat2(cos(angle), sin(angle),\n                                -sin(angle), cos(angle));\n  vec2 viewOffset = 2.0 * planeXform * planeCoord / resolution;\n\n  //Compute world offset\n  float axisDistance = position.z;\n  vec3 dataPosition = axisDistance * axis + offset;\n  vec4 worldPosition = model * vec4(dataPosition, 1);\n  \n  //Compute clip position\n  vec4 viewPosition = view * worldPosition;\n  vec4 clipPosition = projection * viewPosition;\n  clipPosition /= clipPosition.w;\n\n  //Apply text offset in clip coordinates\n  clipPosition += vec4(viewOffset, 0, 0);\n\n  //Done\n  gl_Position = clipPosition;\n}"
++var textFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
++exports.text = function(gl) {
++  return createShader(gl, textVert, textFrag, null, [
++    {name: 'position', type: 'vec3'}
++  ])
++}
+ 
+-        //Check NaNs
+-        for(var j=0; j<2; ++j) {
+-          var v = cell[j]
+-          var p = positions[v]
+-          for(var k=0; k<3; ++k) {
+-            if(isNaN(p[k]) || !isFinite(p[k])) {
+-              continue fill_loop
+-            }
+-          }
+-        }
++var bgVert = "#define GLSLIFY 1\nattribute vec3 position;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection;\nuniform vec3 enable;\nuniform vec3 bounds[2];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  if(dot(normal, enable) > 0.0) {\n    vec3 nPosition = mix(bounds[0], bounds[1], 0.5 * (position + 1.0));\n    gl_Position = projection * view * model * vec4(nPosition, 1.0);\n  } else {\n    gl_Position = vec4(0,0,0,0);\n  }\n  colorChannel = abs(normal);\n}"
++var bgFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 colors[3];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  gl_FragColor = colorChannel.x * colors[0] + \n                 colorChannel.y * colors[1] +\n                 colorChannel.z * colors[2];\n}"
++exports.bg = function(gl) {
++  return createShader(gl, bgVert, bgFrag, null, [
++    {name: 'position', type: 'vec3'},
++    {name: 'normal', type: 'vec3'}
++  ])
++}
+ 
+-        for(var j=0; j<2; ++j) {
+-          var v = cell[j]
+-          var p = positions[v]
++},{"gl-shader":190}],118:[function(require,module,exports){
++(function (process){
++"use strict"
+ 
+-          ePos.push(p[0], p[1], p[2])
++module.exports = createTextSprites
+ 
+-          var c
+-          if(vertexColors) {
+-            c = vertexColors[v]
+-          } else if(cellColors) {
+-            c = cellColors[i]
+-          } else {
+-            c = meshColor
+-          }
+-          if(c.length === 3) {
+-            eCol.push(c[0], c[1], c[2], 1)
+-          } else {
+-            eCol.push(c[0], c[1], c[2], c[3])
+-          }
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var vectorizeText = require('vectorize-text')
++var createShader  = require('./shaders').text
+ 
+-          var uv
+-          if(vertexUVs) {
+-            uv = vertexUVs[v]
+-          } else if(vertexIntensity) {
+-            uv = [
+-              (vertexIntensity[v] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else if(cellUVs) {
+-            uv = cellUVs[i]
+-          } else if(cellIntensity) {
+-            uv = [
+-              (cellIntensity[i] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else {
+-            uv = [
+-              (p[2] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          }
+-          eUVs.push(uv[0], uv[1])
++var globals = window || process.global || {}
++var __TEXT_CACHE  = globals.__TEXT_CACHE || {}
++globals.__TEXT_CACHE = {}
+ 
+-          eIds.push(i)
+-        }
+-        edgeCount += 1
+-      break
++//Vertex buffer format for text is:
++//
++/// [x,y,z] = Spatial coordinate
++//
+ 
+-      case 3:
+-        //Check NaNs
+-        for(var j=0; j<3; ++j) {
+-          var v = cell[j]
+-          var p = positions[v]
+-          for(var k=0; k<3; ++k) {
+-            if(isNaN(p[k]) || !isFinite(p[k])) {
+-              continue fill_loop
+-            }
+-          }
+-        }
++var VERTEX_SIZE = 3
++var VERTEX_STRIDE = VERTEX_SIZE * 4
+ 
+-        for(var j=0; j<3; ++j) {
+-          var v = cell[j]
++function TextSprites(
++  gl,
++  shader,
++  buffer,
++  vao) {
++  this.gl           = gl
++  this.shader       = shader
++  this.buffer       = buffer
++  this.vao          = vao
++  this.tickOffset   =
++  this.tickCount    =
++  this.labelOffset  =
++  this.labelCount   = null
++}
+ 
+-          var p = positions[v]
+-          tPos.push(p[0], p[1], p[2])
++var proto = TextSprites.prototype
+ 
+-          var c
+-          if(vertexColors) {
+-            c = vertexColors[v]
+-          } else if(cellColors) {
+-            c = cellColors[i]
+-          } else {
+-            c = meshColor
+-          }
+-          if(c.length === 3) {
+-            tCol.push(c[0], c[1], c[2], 1)
+-          } else {
+-            tCol.push(c[0], c[1], c[2], c[3])
+-          }
++//Bind textures for rendering
++var SHAPE = [0,0]
++proto.bind = function(model, view, projection, pixelScale) {
++  this.vao.bind()
++  this.shader.bind()
++  var uniforms = this.shader.uniforms
++  uniforms.model = model
++  uniforms.view = view
++  uniforms.projection = projection
++  uniforms.pixelScale = pixelScale
++  SHAPE[0] = this.gl.drawingBufferWidth
++  SHAPE[1] = this.gl.drawingBufferHeight
++  this.shader.uniforms.resolution = SHAPE
++}
+ 
+-          var uv
+-          if(vertexUVs) {
+-            uv = vertexUVs[v]
+-          } else if(vertexIntensity) {
+-            uv = [
+-              (vertexIntensity[v] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else if(cellUVs) {
+-            uv = cellUVs[i]
+-          } else if(cellIntensity) {
+-            uv = [
+-              (cellIntensity[i] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          } else {
+-            uv = [
+-              (p[2] - intensityLo) /
+-              (intensityHi - intensityLo), 0]
+-          }
+-          tUVs.push(uv[0], uv[1])
++proto.update = function(bounds, labels, labelFont, ticks, tickFont) {
++  var gl = this.gl
++  var data = []
+ 
+-          var q
+-          if(vertexNormals) {
+-            q = vertexNormals[v]
+-          } else {
+-            q = cellNormals[i]
+-          }
+-          tNor.push(q[0], q[1], q[2])
++  function addItem(t, text, font, size) {
++    var fontcache = __TEXT_CACHE[font]
++    if(!fontcache) {
++      fontcache = __TEXT_CACHE[font] = {}
++    }
++    var mesh = fontcache[text]
++    if(!mesh) {
++      mesh = fontcache[text] = tryVectorizeText(text, {
++        triangles: true,
++        font: font,
++        textAlign: 'center',
++        textBaseline: 'middle'
++      })
++    }
++    var scale = (size || 12) / 12
++    var positions = mesh.positions
++    var cells = mesh.cells
++    var lo = [ Infinity, Infinity]
++    var hi = [-Infinity,-Infinity]
++    for(var i=0, nc=cells.length; i<nc; ++i) {
++      var c = cells[i]
++      for(var j=2; j>=0; --j) {
++        var p = positions[c[j]]
++        data.push(scale*p[0], -scale*p[1], t)
++      }
++    }
++  }
+ 
+-          tIds.push(i)
+-        }
+-        triangleCount += 1
+-      break
++  //Generate sprites for all 3 axes, store data in texture atlases
++  var tickOffset  = [0,0,0]
++  var tickCount   = [0,0,0]
++  var labelOffset = [0,0,0]
++  var labelCount  = [0,0,0]
++  for(var d=0; d<3; ++d) {
+ 
+-      default:
+-      break
++    //Generate label
++    labelOffset[d] = (data.length/VERTEX_SIZE)|0
++    addItem(0.5*(bounds[0][d]+bounds[1][d]), labels[d], labelFont)
++    labelCount[d] = ((data.length/VERTEX_SIZE)|0) - labelOffset[d]
++
++    //Generate sprites for tick marks
++    tickOffset[d] = (data.length/VERTEX_SIZE)|0
++    for(var i=0; i<ticks[d].length; ++i) {
++      if(!ticks[d][i].text) {
++        continue
++      }
++      addItem(
++        ticks[d][i].x,
++        ticks[d][i].text,
++        ticks[d][i].font || tickFont,
++        ticks[d][i].fontSize || 12)
+     }
++    tickCount[d] = ((data.length/VERTEX_SIZE)|0) - tickOffset[d]
+   }
+ 
+-  this.pointCount     = pointCount
+-  this.edgeCount      = edgeCount
+-  this.triangleCount  = triangleCount
++  this.buffer.update(data)
++  this.tickOffset = tickOffset
++  this.tickCount = tickCount
++  this.labelOffset = labelOffset
++  this.labelCount = labelCount
++}
+ 
+-  this.pointPositions.update(pPos)
+-  this.pointColors.update(pCol)
+-  this.pointUVs.update(pUVs)
+-  this.pointSizes.update(pSiz)
+-  this.pointIds.update(new Uint32Array(pIds))
++//Draws the tick marks for an axis
++var AXIS = [0,0,0]
++proto.drawTicks = function(d, scale, angle, offset, color) {
++  if(!this.tickCount[d]) {
++    return
++  }
+ 
+-  this.edgePositions.update(ePos)
+-  this.edgeColors.update(eCol)
+-  this.edgeUVs.update(eUVs)
+-  this.edgeIds.update(new Uint32Array(eIds))
++  var v = AXIS
++  v[0] = v[1] = v[2] = 0
++  v[d] = 1
++  this.shader.uniforms.axis = v
++  this.shader.uniforms.color = color
++  this.shader.uniforms.angle = angle
++  this.shader.uniforms.scale = scale
++  this.shader.uniforms.offset = offset
++  this.vao.draw(this.gl.TRIANGLES, this.tickCount[d], this.tickOffset[d])
++}
+ 
+-  this.trianglePositions.update(tPos)
+-  this.triangleColors.update(tCol)
+-  this.triangleUVs.update(tUVs)
+-  this.triangleNormals.update(tNor)
+-  this.triangleIds.update(new Uint32Array(tIds))
++//Draws the text label for an axis
++var ZERO = [0,0,0]
++proto.drawLabel = function(d, scale, angle, offset, color) {
++  if(!this.labelCount[d]) {
++    return
++  }
++  this.shader.uniforms.axis = ZERO
++  this.shader.uniforms.color = color
++  this.shader.uniforms.angle = angle
++  this.shader.uniforms.scale = scale
++  this.shader.uniforms.offset = offset
++  this.vao.draw(this.gl.TRIANGLES, this.labelCount[d], this.labelOffset[d])
+ }
+ 
+-proto.drawTransparent = proto.draw = function(params) {
+-  params = params || {}
+-  var gl          = this.gl
+-  var model       = params.model      || identityMatrix
+-  var view        = params.view       || identityMatrix
+-  var projection  = params.projection || identityMatrix
++//Releases all resources attached to this object
++proto.dispose = function() {
++  this.shader.dispose()
++  this.vao.dispose()
++  this.buffer.dispose()
++}
+ 
+-  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
+-  for(var i=0; i<3; ++i) {
+-    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
+-    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
++function tryVectorizeText(text, options) {
++  try {
++    return vectorizeText(text, options)
++  } catch(e) {
++    console.warn('error vectorizing text:', e)
++    return {
++      cells: [],
++      positions: []
++    }
+   }
++}
+ 
+-  var uniforms = {
+-    model:      model,
+-    view:       view,
+-    projection: projection,
+-
+-    clipBounds: clipBounds,
++function createTextSprites(
++    gl,
++    bounds,
++    labels,
++    labelFont,
++    ticks,
++    tickFont) {
+ 
+-    kambient:   this.ambientLight,
+-    kdiffuse:   this.diffuseLight,
+-    kspecular:  this.specularLight,
+-    roughness:  this.roughness,
+-    fresnel:    this.fresnel,
++  var buffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++    { "buffer": buffer,
++      "size": 3
++    }
++  ])
+ 
+-    eyePosition:   [0,0,0],
+-    lightPosition: [0,0,0],
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
+ 
+-    opacity:  this.opacity,
++  var result = new TextSprites(
++    gl,
++    shader,
++    buffer,
++    vao)
+ 
+-    contourColor: this.contourColor,
++  result.update(bounds, labels, labelFont, ticks, tickFont)
+ 
+-    texture:    0
+-  }
++  return result
++}
+ 
+-  this.texture.bind(0)
++}).call(this,require('_process'))
++},{"./shaders":117,"_process":403,"gl-buffer":121,"gl-vao":206,"vectorize-text":460}],119:[function(require,module,exports){
++'use strict'
+ 
+-  var invCameraMatrix = new Array(16)
+-  multiply(invCameraMatrix, uniforms.view, uniforms.model)
+-  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
+-  invert(invCameraMatrix, invCameraMatrix)
++exports.create   = defaultTicks
++exports.equal    = ticksEqual
+ 
+-  for(var i=0; i<3; ++i) {
+-    uniforms.eyePosition[i] = invCameraMatrix[12+i] / invCameraMatrix[15]
++function prettyPrint(spacing, i) {
++  var stepStr = spacing + ""
++  var u = stepStr.indexOf(".")
++  var sigFigs = 0
++  if(u >= 0) {
++    sigFigs = stepStr.length - u - 1
+   }
+-
+-  var w = invCameraMatrix[15]
+-  for(var i=0; i<3; ++i) {
+-    w += this.lightPosition[i] * invCameraMatrix[4*i+3]
++  var shift = Math.pow(10, sigFigs)
++  var x = Math.round(spacing * i * shift)
++  var xstr = x + ""
++  if(xstr.indexOf("e") >= 0) {
++    return xstr
+   }
+-  for(var i=0; i<3; ++i) {
+-    var s = invCameraMatrix[12+i]
+-    for(var j=0; j<3; ++j) {
+-      s += invCameraMatrix[4*j+i] * this.lightPosition[j]
++  var xi = x / shift, xf = x % shift
++  if(x < 0) {
++    xi = -Math.ceil(xi)|0
++    xf = (-xf)|0
++  } else {
++    xi = Math.floor(xi)|0
++    xf = xf|0
++  }
++  var xis = "" + xi 
++  if(x < 0) {
++    xis = "-" + xis
++  }
++  if(sigFigs) {
++    var xs = "" + xf
++    while(xs.length < sigFigs) {
++      xs = "0" + xs
+     }
+-    uniforms.lightPosition[i] = s / w
++    return xis + "." + xs
++  } else {
++    return xis
+   }
++}
+ 
+-  if(this.triangleCount > 0) {
+-    var shader = this.triShader
+-    shader.bind()
+-    shader.uniforms = uniforms
+-
+-    this.triangleVAO.bind()
+-    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
+-    this.triangleVAO.unbind()
++function defaultTicks(bounds, tickSpacing) {
++  var array = []
++  for(var d=0; d<3; ++d) {
++    var ticks = []
++    var m = 0.5*(bounds[0][d]+bounds[1][d])
++    for(var t=0; t*tickSpacing[d]<=bounds[1][d]; ++t) {
++      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
++    }
++    for(var t=-1; t*tickSpacing[d]>=bounds[0][d]; --t) {
++      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
++    }
++    array.push(ticks)
+   }
++  return array
++}
+ 
+-  if(this.edgeCount > 0 && this.lineWidth > 0) {
+-    var shader = this.lineShader
+-    shader.bind()
+-    shader.uniforms = uniforms
+-
+-    this.edgeVAO.bind()
+-    gl.lineWidth(this.lineWidth)
+-    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
+-    this.edgeVAO.unbind()
++function ticksEqual(ticksA, ticksB) {
++  for(var i=0; i<3; ++i) {
++    if(ticksA[i].length !== ticksB[i].length) {
++      return false
++    }
++    for(var j=0; j<ticksA[i].length; ++j) {
++      var a = ticksA[i][j]
++      var b = ticksB[i][j]
++      if(a.x !== b.x || a.text !== b.text) {
++        return false
++      }
++    }
+   }
++  return true
++}
++},{}],120:[function(require,module,exports){
++"use strict"
+ 
+-  if(this.pointCount > 0) {
+-    var shader = this.pointShader
+-    shader.bind()
+-    shader.uniforms = uniforms
+-
+-    this.pointVAO.bind()
+-    gl.drawArrays(gl.POINTS, 0, this.pointCount)
+-    this.pointVAO.unbind()
+-  }
++module.exports = axesProperties
+ 
+-  if(this.contourEnable && this.contourCount > 0 && this.contourLineWidth > 0) {
+-    var shader = this.contourShader
+-    shader.bind()
+-    shader.uniforms = uniforms
++var getPlanes   = require("extract-frustum-planes")
++var splitPoly   = require("split-polygon")
++var cubeParams  = require("./lib/cube.js")
++var m4mul       = require("gl-mat4/multiply")
++var m4transpose = require("gl-mat4/transpose")
++var v4transformMat4 = require("gl-vec4/transformMat4")
+ 
+-    this.contourVAO.bind()
+-    gl.drawArrays(gl.LINES, 0, this.contourCount)
+-    this.contourVAO.unbind()
+-  }
+-}
++var identity    = new Float32Array([
++    1, 0, 0, 0,
++    0, 1, 0, 0,
++    0, 0, 1, 0,
++    0, 0, 0, 1
++  ])
+ 
+-proto.drawPick = function(params) {
+-  params = params || {}
++var mvp         = new Float32Array(16)
+ 
+-  var gl         = this.gl
++function AxesRange3D(lo, hi, pixelsPerDataUnit) {
++  this.lo = lo
++  this.hi = hi
++  this.pixelsPerDataUnit = pixelsPerDataUnit
++}
+ 
+-  var model      = params.model      || identityMatrix
+-  var view       = params.view       || identityMatrix
+-  var projection = params.projection || identityMatrix
++var SCRATCH_P = [0,0,0,1]
++var SCRATCH_Q = [0,0,0,1]
+ 
+-  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
++function gradient(result, M, v, width, height) {
+   for(var i=0; i<3; ++i) {
+-    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
+-    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
+-  }
++    var p = SCRATCH_P
++    var q = SCRATCH_Q
++    for(var j=0; j<3; ++j) {
++      q[j] = p[j] = v[j]
++    }
++    q[3] = p[3] = 1
+ 
+-  //Save camera parameters
+-  this._model      = [].slice.call(model)
+-  this._view       = [].slice.call(view)
+-  this._projection = [].slice.call(projection)
+-  this._resolution = [gl.drawingBufferWidth, gl.drawingBufferHeight]
++    q[i] += 1
++    v4transformMat4(q, q, M)
++    if(q[3] < 0) {
++      result[i] = Infinity
++    }
+ 
+-  var uniforms = {
+-    model:      model,
+-    view:       view,
+-    projection: projection,
+-    clipBounds: clipBounds,
+-    pickId:     this.pickId / 255.0,
+-  }
++    p[i] -= 1
++    v4transformMat4(p, p, M)
++    if(p[3] < 0) {
++      result[i] = Infinity
++    }
+ 
+-  var shader = this.pickShader
+-  shader.bind()
+-  shader.uniforms = uniforms
++    var dx = (p[0]/p[3] - q[0]/q[3]) * width
++    var dy = (p[1]/p[3] - q[1]/q[3]) * height
+ 
+-  if(this.triangleCount > 0) {
+-    this.triangleVAO.bind()
+-    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
+-    this.triangleVAO.unbind()
++    result[i] = 0.25 * Math.sqrt(dx*dx + dy*dy)
+   }
++  return result
++}
+ 
+-  if(this.edgeCount > 0) {
+-    this.edgeVAO.bind()
+-    gl.lineWidth(this.lineWidth)
+-    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
+-    this.edgeVAO.unbind()
+-  }
++var RANGES = [
++  new AxesRange3D(Infinity, -Infinity, Infinity),
++  new AxesRange3D(Infinity, -Infinity, Infinity),
++  new AxesRange3D(Infinity, -Infinity, Infinity)
++]
+ 
+-  if(this.pointCount > 0) {
+-    var shader = this.pointPickShader
+-    shader.bind()
+-    shader.uniforms = uniforms
++var SCRATCH_X = [0,0,0]
+ 
+-    this.pointVAO.bind()
+-    gl.drawArrays(gl.POINTS, 0, this.pointCount)
+-    this.pointVAO.unbind()
+-  }
+-}
++function axesProperties(axes, camera, width, height, params) {
++  var model       = camera.model || identity
++  var view        = camera.view || identity
++  var projection  = camera.projection || identity
++  var bounds      = axes.bounds
++  var params      = params || cubeParams(model, view, projection, bounds)
++  var axis        = params.axis
++  var edges       = params.edges
+ 
++  m4mul(mvp, view, model)
++  m4mul(mvp, projection, mvp)
+ 
+-proto.pick = function(pickData) {
+-  if(!pickData) {
+-    return null
+-  }
+-  if(pickData.id !== this.pickId) {
+-    return null
++  //Calculate the following properties for each axis:
++  //
++  // * lo - start of visible range for each axis in tick coordinates
++  // * hi - end of visible range for each axis in tick coordinates
++  // * ticksPerPixel - pixel density of tick marks for the axis
++  //
++  var ranges = RANGES
++  for(var i=0; i<3; ++i) {
++    ranges[i].lo = Infinity
++    ranges[i].hi = -Infinity
++    ranges[i].pixelsPerDataUnit = Infinity
+   }
+ 
+-  var cellId    = pickData.value[0] + 256*pickData.value[1] + 65536*pickData.value[2]
+-  var cell      = this.cells[cellId]
+-  var positions = this.positions
++  //Compute frustum planes, intersect with box
++  var frustum = getPlanes(m4transpose(mvp, mvp))
++  m4transpose(mvp, mvp)
+ 
+-  var simplex   = new Array(cell.length)
+-  for(var i=0; i<cell.length; ++i) {
+-    simplex[i] = positions[cell[i]]
+-  }
++  //Loop over vertices of viewable box
++  for(var d=0; d<3; ++d) {
++    var u = (d+1)%3
++    var v = (d+2)%3
++    var x = SCRATCH_X
++i_loop:
++    for(var i=0; i<2; ++i) {
++      var poly = []
+ 
+-  var data = closestPoint(
+-    simplex,
+-    [pickData.coord[0], this._resolution[1]-pickData.coord[1]],
+-    this._model,
+-    this._view,
+-    this._projection,
+-    this._resolution)
++      if((axis[d] < 0) === !!i) {
++        continue
++      }
+ 
+-  if(!data) {
+-    return null
+-  }
++      x[d] = bounds[i][d]
++      for(var j=0; j<2; ++j) {
++        x[u] = bounds[j^i][u]
++        for(var k=0; k<2; ++k) {
++          x[v] = bounds[k^j^i][v]
++          poly.push(x.slice())
++        }
++      }
++      for(var j=0; j<frustum.length; ++j) {
++        if(poly.length === 0) {
++          continue i_loop
++        }
++        poly = splitPoly.positive(poly, frustum[j])
++      }
+ 
+-  var weights = data[2]
+-  var interpIntensity = 0.0
+-  for(var i=0; i<cell.length; ++i) {
+-    interpIntensity += weights[i] * this.intensity[cell[i]]
++      //Loop over vertices of polygon to find extremal points
++      for(var j=0; j<poly.length; ++j) {
++        var v = poly[j]
++        var grad = gradient(SCRATCH_X, mvp, v, width, height)
++        for(var k=0; k<3; ++k) {
++          ranges[k].lo = Math.min(ranges[k].lo, v[k])
++          ranges[k].hi = Math.max(ranges[k].hi, v[k])
++          if(k !== d) {
++            ranges[k].pixelsPerDataUnit = Math.min(ranges[k].pixelsPerDataUnit, Math.abs(grad[k]))
++          }
++        }
++      }
++    }
+   }
+ 
+-  return {
+-    position: data[1],
+-    index:    cell[data[0]],
+-    cell:     cell,
+-    cellId:   cellId,
+-    intensity:  interpIntensity,
+-    dataCoordinate: this.positions[cell[data[0]]]
+-  }
++  return ranges
+ }
+ 
++},{"./lib/cube.js":115,"extract-frustum-planes":97,"gl-mat4/multiply":144,"gl-mat4/transpose":152,"gl-vec4/transformMat4":212,"split-polygon":436}],121:[function(require,module,exports){
++"use strict"
+ 
+-proto.dispose = function() {
+-  this.texture.dispose()
+-
+-  this.triShader.dispose()
+-  this.lineShader.dispose()
+-  this.pointShader.dispose()
+-  this.pickShader.dispose()
+-  this.pointPickShader.dispose()
+-
+-  this.triangleVAO.dispose()
+-  this.trianglePositions.dispose()
+-  this.triangleColors.dispose()
+-  this.triangleUVs.dispose()
+-  this.triangleNormals.dispose()
+-  this.triangleIds.dispose()
+-
+-  this.edgeVAO.dispose()
+-  this.edgePositions.dispose()
+-  this.edgeColors.dispose()
+-  this.edgeUVs.dispose()
+-  this.edgeIds.dispose()
++var pool = require("typedarray-pool")
++var ops = require("ndarray-ops")
++var ndarray = require("ndarray")
+ 
+-  this.pointVAO.dispose()
+-  this.pointPositions.dispose()
+-  this.pointColors.dispose()
+-  this.pointUVs.dispose()
+-  this.pointSizes.dispose()
+-  this.pointIds.dispose()
++var SUPPORTED_TYPES = [
++  "uint8",
++  "uint8_clamped",
++  "uint16",
++  "uint32",
++  "int8",
++  "int16",
++  "int32",
++  "float32" ]
+ 
+-  this.contourVAO.dispose()
+-  this.contourPositions.dispose()
+-  this.contourShader.dispose()
++function GLBuffer(gl, type, handle, length, usage) {
++  this.gl = gl
++  this.type = type
++  this.handle = handle
++  this.length = length
++  this.usage = usage
+ }
+ 
+-function createMeshShader(gl) {
+-  var shader = createShader(gl, meshShader)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location    = 2
+-  shader.attributes.uv.location       = 3
+-  shader.attributes.normal.location   = 4
+-  return shader
+-}
++var proto = GLBuffer.prototype
+ 
+-function createWireShader(gl) {
+-  var shader = createShader(gl, wireShader)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location    = 2
+-  shader.attributes.uv.location       = 3
+-  return shader
++proto.bind = function() {
++  this.gl.bindBuffer(this.type, this.handle)
+ }
+ 
+-function createPointShader(gl) {
+-  var shader = createShader(gl, pointShader)
+-  shader.attributes.position.location  = 0
+-  shader.attributes.color.location     = 2
+-  shader.attributes.uv.location        = 3
+-  shader.attributes.pointSize.location = 4
+-  return shader
++proto.unbind = function() {
++  this.gl.bindBuffer(this.type, null)
+ }
+ 
+-function createPickShader(gl) {
+-  var shader = createShader(gl, pickShader)
+-  shader.attributes.position.location = 0
+-  shader.attributes.id.location       = 1
+-  return shader
++proto.dispose = function() {
++  this.gl.deleteBuffer(this.handle)
+ }
+ 
+-function createPointPickShader(gl) {
+-  var shader = createShader(gl, pointPickShader)
+-  shader.attributes.position.location  = 0
+-  shader.attributes.id.location        = 1
+-  shader.attributes.pointSize.location = 4
+-  return shader
++function updateTypeArray(gl, type, len, usage, data, offset) {
++  var dataLen = data.length * data.BYTES_PER_ELEMENT
++  if(offset < 0) {
++    gl.bufferData(type, data, usage)
++    return dataLen
++  }
++  if(dataLen + offset > len) {
++    throw new Error("gl-buffer: If resizing buffer, must not specify offset")
++  }
++  gl.bufferSubData(type, offset, data)
++  return len
+ }
+ 
+-function createContourShader(gl) {
+-  var shader = createShader(gl, contourShader)
+-  shader.attributes.position.location = 0
+-  return shader
++function makeScratchTypeArray(array, dtype) {
++  var res = pool.malloc(array.length, dtype)
++  var n = array.length
++  for(var i=0; i<n; ++i) {
++    res[i] = array[i]
++  }
++  return res
+ }
+ 
+-function createSimplicialMesh(params) {
+-  var gl = params.gl
+-
+-  var triShader       = createMeshShader(gl)
+-  var lineShader      = createWireShader(gl)
+-  var pointShader     = createPointShader(gl)
+-  var pickShader      = createPickShader(gl)
+-  var pointPickShader = createPointPickShader(gl)
+-  var contourShader   = createContourShader(gl)
+-
+-  var meshTexture       = createTexture(gl,
+-    ndarray(new Uint8Array([255,255,255,255]), [1,1,4]))
+-  meshTexture.generateMipmap()
+-  meshTexture.minFilter = gl.LINEAR_MIPMAP_LINEAR
+-  meshTexture.magFilter = gl.LINEAR
+-
+-  var trianglePositions = createBuffer(gl)
+-  var triangleColors    = createBuffer(gl)
+-  var triangleUVs       = createBuffer(gl)
+-  var triangleNormals   = createBuffer(gl)
+-  var triangleIds       = createBuffer(gl)
+-  var triangleVAO       = createVAO(gl, [
+-    { buffer: trianglePositions,
+-      type: gl.FLOAT,
+-      size: 3
+-    },
+-    { buffer: triangleIds,
+-      type: gl.UNSIGNED_BYTE,
+-      size: 4,
+-      normalized: true
+-    },
+-    { buffer: triangleColors,
+-      type: gl.FLOAT,
+-      size: 4
+-    },
+-    { buffer: triangleUVs,
+-      type: gl.FLOAT,
+-      size: 2
+-    },
+-    { buffer: triangleNormals,
+-      type: gl.FLOAT,
+-      size: 3
+-    }
+-  ])
+-
+-  var edgePositions = createBuffer(gl)
+-  var edgeColors    = createBuffer(gl)
+-  var edgeUVs       = createBuffer(gl)
+-  var edgeIds       = createBuffer(gl)
+-  var edgeVAO       = createVAO(gl, [
+-    { buffer: edgePositions,
+-      type: gl.FLOAT,
+-      size: 3
+-    },
+-    { buffer: edgeIds,
+-      type: gl.UNSIGNED_BYTE,
+-      size: 4,
+-      normalized: true
+-    },
+-    { buffer: edgeColors,
+-      type: gl.FLOAT,
+-      size: 4
+-    },
+-    { buffer: edgeUVs,
+-      type: gl.FLOAT,
+-      size: 2
+-    }
+-  ])
+-
+-  var pointPositions  = createBuffer(gl)
+-  var pointColors     = createBuffer(gl)
+-  var pointUVs        = createBuffer(gl)
+-  var pointSizes      = createBuffer(gl)
+-  var pointIds        = createBuffer(gl)
+-  var pointVAO        = createVAO(gl, [
+-    { buffer: pointPositions,
+-      type: gl.FLOAT,
+-      size: 3
+-    },
+-    { buffer: pointIds,
+-      type: gl.UNSIGNED_BYTE,
+-      size: 4,
+-      normalized: true
+-    },
+-    { buffer: pointColors,
+-      type: gl.FLOAT,
+-      size: 4
+-    },
+-    { buffer: pointUVs,
+-      type: gl.FLOAT,
+-      size: 2
+-    },
+-    { buffer: pointSizes,
+-      type: gl.FLOAT,
+-      size: 1
++function isPacked(shape, stride) {
++  var n = 1
++  for(var i=stride.length-1; i>=0; --i) {
++    if(stride[i] !== n) {
++      return false
+     }
+-  ])
+-
+-  var contourPositions = createBuffer(gl)
+-  var contourVAO       = createVAO(gl, [
+-    { buffer: contourPositions,
+-      type:   gl.FLOAT,
+-      size:   3
+-    }])
+-
+-  var mesh = new SimplicialMesh(gl
+-    , meshTexture
+-    , triShader
+-    , lineShader
+-    , pointShader
+-    , pickShader
+-    , pointPickShader
+-    , contourShader
+-    , trianglePositions
+-    , triangleIds
+-    , triangleColors
+-    , triangleUVs
+-    , triangleNormals
+-    , triangleVAO
+-    , edgePositions
+-    , edgeIds
+-    , edgeColors
+-    , edgeUVs
+-    , edgeVAO
+-    , pointPositions
+-    , pointIds
+-    , pointColors
+-    , pointUVs
+-    , pointSizes
+-    , pointVAO
+-    , contourPositions
+-    , contourVAO)
+-
+-  mesh.update(params)
+-
+-  return mesh
+-}
+-
+-module.exports = createSimplicialMesh
+-
+-},{"./lib/closest-point":154,"./lib/shaders":155,"colormap":106,"gl-buffer":124,"gl-mat4/invert":143,"gl-mat4/multiply":145,"gl-shader":203,"gl-texture2d":228,"gl-vao":232,"ndarray":433,"normals":158,"simplicial-complex-contour":160,"typedarray-pool":458}],157:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = barycentric
+-
+-var solve = require('robust-linear-solve')
+-
+-function reduce(x) {
+-  var r = 0
+-  for(var i=0; i<x.length; ++i) {
+-    r += x[i]
++    n *= shape[i]
+   }
+-  return r
++  return true
+ }
+ 
+-function barycentric(simplex, point) {
+-  var d = point.length
+-  var A = new Array(d+1)
+-  for(var i=0; i<d; ++i) {
+-    var row = new Array(d+1)
+-    for(var j=0; j<=d; ++j) {
+-      row[j] = simplex[j][i]
++proto.update = function(array, offset) {
++  if(typeof offset !== "number") {
++    offset = -1
++  }
++  this.bind()
++  if(typeof array === "object" && typeof array.shape !== "undefined") { //ndarray
++    var dtype = array.dtype
++    if(SUPPORTED_TYPES.indexOf(dtype) < 0) {
++      dtype = "float32"
++    }
++    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
++      var ext = gl.getExtension('OES_element_index_uint')
++      if(ext && dtype !== "uint16") {
++        dtype = "uint32"
++      } else {
++        dtype = "uint16"
++      }
++    }
++    if(dtype === array.dtype && isPacked(array.shape, array.stride)) {
++      if(array.offset === 0 && array.data.length === array.shape[0]) {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data, offset)
++      } else {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data.subarray(array.offset, array.shape[0]), offset)
++      }
++    } else {
++      var tmp = pool.malloc(array.size, dtype)
++      var ndt = ndarray(tmp, array.shape)
++      ops.assign(ndt, array)
++      if(offset < 0) {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp, offset)
++      } else {
++        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp.subarray(0, array.size), offset)
++      }
++      pool.free(tmp)
+     }
+-    A[i] = row
+-  }
+-  A[d] = new Array(d+1)
+-  for(var i=0; i<=d; ++i) {
+-    A[d][i] = 1
+-  }
+-
+-  var b = new Array(d+1)
+-  for(var i=0; i<d; ++i) {
+-    b[i] = point[i]
++  } else if(Array.isArray(array)) { //Vanilla array
++    var t
++    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
++      t = makeScratchTypeArray(array, "uint16")
++    } else {
++      t = makeScratchTypeArray(array, "float32")
++    }
++    if(offset < 0) {
++      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t, offset)
++    } else {
++      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t.subarray(0, array.length), offset)
++    }
++    pool.free(t)
++  } else if(typeof array === "object" && typeof array.length === "number") { //Typed array
++    this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array, offset)
++  } else if(typeof array === "number" || array === undefined) { //Number/default
++    if(offset >= 0) {
++      throw new Error("gl-buffer: Cannot specify offset when resizing buffer")
++    }
++    array = array | 0
++    if(array <= 0) {
++      array = 1
++    }
++    this.gl.bufferData(this.type, array|0, this.usage)
++    this.length = array
++  } else { //Error, case should not happen
++    throw new Error("gl-buffer: Invalid data type")
+   }
+-  b[d] = 1.0
++}
+ 
+-  var x = solve(A, b)
+-  var w = reduce(x[d+1])
+-  
+-  if(w === 0) {
+-    w = 1.0
++function createBuffer(gl, data, type, usage) {
++  type = type || gl.ARRAY_BUFFER
++  usage = usage || gl.DYNAMIC_DRAW
++  if(type !== gl.ARRAY_BUFFER && type !== gl.ELEMENT_ARRAY_BUFFER) {
++    throw new Error("gl-buffer: Invalid type for webgl buffer, must be either gl.ARRAY_BUFFER or gl.ELEMENT_ARRAY_BUFFER")
+   }
+-  var y = new Array(d+1)
+-  for(var i=0; i<=d; ++i) {
+-    y[i] = reduce(x[i]) / w
++  if(usage !== gl.DYNAMIC_DRAW && usage !== gl.STATIC_DRAW && usage !== gl.STREAM_DRAW) {
++    throw new Error("gl-buffer: Invalid usage for buffer, must be either gl.DYNAMIC_DRAW, gl.STATIC_DRAW or gl.STREAM_DRAW")
+   }
+-  return y
++  var handle = gl.createBuffer()
++  var result = new GLBuffer(gl, type, handle, 0, usage)
++  result.update(data)
++  return result
+ }
+-},{"robust-linear-solve":436}],158:[function(require,module,exports){
+-var DEFAULT_NORMALS_EPSILON = 1e-6;
+-var DEFAULT_FACE_EPSILON = 1e-6;
+-
+-//Estimate the vertex normals of a mesh
+-exports.vertexNormals = function(faces, positions, specifiedEpsilon) {
+-
+-  var N         = positions.length;
+-  var normals   = new Array(N);
+-  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_NORMALS_EPSILON : specifiedEpsilon;
+ 
+-  //Initialize normal array
+-  for(var i=0; i<N; ++i) {
+-    normals[i] = [0.0, 0.0, 0.0];
+-  }
++module.exports = createBuffer
+ 
+-  //Walk over all the faces and add per-vertex contribution to normal weights
+-  for(var i=0; i<faces.length; ++i) {
+-    var f = faces[i];
+-    var p = 0;
+-    var c = f[f.length-1];
+-    var n = f[0];
+-    for(var j=0; j<f.length; ++j) {
++},{"ndarray":385,"ndarray-ops":379,"typedarray-pool":449}],122:[function(require,module,exports){
++module.exports = {
++  0: 'NONE',
++  1: 'ONE',
++  2: 'LINE_LOOP',
++  3: 'LINE_STRIP',
++  4: 'TRIANGLES',
++  5: 'TRIANGLE_STRIP',
++  6: 'TRIANGLE_FAN',
++  256: 'DEPTH_BUFFER_BIT',
++  512: 'NEVER',
++  513: 'LESS',
++  514: 'EQUAL',
++  515: 'LEQUAL',
++  516: 'GREATER',
++  517: 'NOTEQUAL',
++  518: 'GEQUAL',
++  519: 'ALWAYS',
++  768: 'SRC_COLOR',
++  769: 'ONE_MINUS_SRC_COLOR',
++  770: 'SRC_ALPHA',
++  771: 'ONE_MINUS_SRC_ALPHA',
++  772: 'DST_ALPHA',
++  773: 'ONE_MINUS_DST_ALPHA',
++  774: 'DST_COLOR',
++  775: 'ONE_MINUS_DST_COLOR',
++  776: 'SRC_ALPHA_SATURATE',
++  1024: 'STENCIL_BUFFER_BIT',
++  1028: 'FRONT',
++  1029: 'BACK',
++  1032: 'FRONT_AND_BACK',
++  1280: 'INVALID_ENUM',
++  1281: 'INVALID_VALUE',
++  1282: 'INVALID_OPERATION',
++  1285: 'OUT_OF_MEMORY',
++  1286: 'INVALID_FRAMEBUFFER_OPERATION',
++  2304: 'CW',
++  2305: 'CCW',
++  2849: 'LINE_WIDTH',
++  2884: 'CULL_FACE',
++  2885: 'CULL_FACE_MODE',
++  2886: 'FRONT_FACE',
++  2928: 'DEPTH_RANGE',
++  2929: 'DEPTH_TEST',
++  2930: 'DEPTH_WRITEMASK',
++  2931: 'DEPTH_CLEAR_VALUE',
++  2932: 'DEPTH_FUNC',
++  2960: 'STENCIL_TEST',
++  2961: 'STENCIL_CLEAR_VALUE',
++  2962: 'STENCIL_FUNC',
++  2963: 'STENCIL_VALUE_MASK',
++  2964: 'STENCIL_FAIL',
++  2965: 'STENCIL_PASS_DEPTH_FAIL',
++  2966: 'STENCIL_PASS_DEPTH_PASS',
++  2967: 'STENCIL_REF',
++  2968: 'STENCIL_WRITEMASK',
++  2978: 'VIEWPORT',
++  3024: 'DITHER',
++  3042: 'BLEND',
++  3088: 'SCISSOR_BOX',
++  3089: 'SCISSOR_TEST',
++  3106: 'COLOR_CLEAR_VALUE',
++  3107: 'COLOR_WRITEMASK',
++  3317: 'UNPACK_ALIGNMENT',
++  3333: 'PACK_ALIGNMENT',
++  3379: 'MAX_TEXTURE_SIZE',
++  3386: 'MAX_VIEWPORT_DIMS',
++  3408: 'SUBPIXEL_BITS',
++  3410: 'RED_BITS',
++  3411: 'GREEN_BITS',
++  3412: 'BLUE_BITS',
++  3413: 'ALPHA_BITS',
++  3414: 'DEPTH_BITS',
++  3415: 'STENCIL_BITS',
++  3553: 'TEXTURE_2D',
++  4352: 'DONT_CARE',
++  4353: 'FASTEST',
++  4354: 'NICEST',
++  5120: 'BYTE',
++  5121: 'UNSIGNED_BYTE',
++  5122: 'SHORT',
++  5123: 'UNSIGNED_SHORT',
++  5124: 'INT',
++  5125: 'UNSIGNED_INT',
++  5126: 'FLOAT',
++  5386: 'INVERT',
++  5890: 'TEXTURE',
++  6401: 'STENCIL_INDEX',
++  6402: 'DEPTH_COMPONENT',
++  6406: 'ALPHA',
++  6407: 'RGB',
++  6408: 'RGBA',
++  6409: 'LUMINANCE',
++  6410: 'LUMINANCE_ALPHA',
++  7680: 'KEEP',
++  7681: 'REPLACE',
++  7682: 'INCR',
++  7683: 'DECR',
++  7936: 'VENDOR',
++  7937: 'RENDERER',
++  7938: 'VERSION',
++  9728: 'NEAREST',
++  9729: 'LINEAR',
++  9984: 'NEAREST_MIPMAP_NEAREST',
++  9985: 'LINEAR_MIPMAP_NEAREST',
++  9986: 'NEAREST_MIPMAP_LINEAR',
++  9987: 'LINEAR_MIPMAP_LINEAR',
++  10240: 'TEXTURE_MAG_FILTER',
++  10241: 'TEXTURE_MIN_FILTER',
++  10242: 'TEXTURE_WRAP_S',
++  10243: 'TEXTURE_WRAP_T',
++  10497: 'REPEAT',
++  10752: 'POLYGON_OFFSET_UNITS',
++  16384: 'COLOR_BUFFER_BIT',
++  32769: 'CONSTANT_COLOR',
++  32770: 'ONE_MINUS_CONSTANT_COLOR',
++  32771: 'CONSTANT_ALPHA',
++  32772: 'ONE_MINUS_CONSTANT_ALPHA',
++  32773: 'BLEND_COLOR',
++  32774: 'FUNC_ADD',
++  32777: 'BLEND_EQUATION_RGB',
++  32778: 'FUNC_SUBTRACT',
++  32779: 'FUNC_REVERSE_SUBTRACT',
++  32819: 'UNSIGNED_SHORT_4_4_4_4',
++  32820: 'UNSIGNED_SHORT_5_5_5_1',
++  32823: 'POLYGON_OFFSET_FILL',
++  32824: 'POLYGON_OFFSET_FACTOR',
++  32854: 'RGBA4',
++  32855: 'RGB5_A1',
++  32873: 'TEXTURE_BINDING_2D',
++  32926: 'SAMPLE_ALPHA_TO_COVERAGE',
++  32928: 'SAMPLE_COVERAGE',
++  32936: 'SAMPLE_BUFFERS',
++  32937: 'SAMPLES',
++  32938: 'SAMPLE_COVERAGE_VALUE',
++  32939: 'SAMPLE_COVERAGE_INVERT',
++  32968: 'BLEND_DST_RGB',
++  32969: 'BLEND_SRC_RGB',
++  32970: 'BLEND_DST_ALPHA',
++  32971: 'BLEND_SRC_ALPHA',
++  33071: 'CLAMP_TO_EDGE',
++  33170: 'GENERATE_MIPMAP_HINT',
++  33189: 'DEPTH_COMPONENT16',
++  33306: 'DEPTH_STENCIL_ATTACHMENT',
++  33635: 'UNSIGNED_SHORT_5_6_5',
++  33648: 'MIRRORED_REPEAT',
++  33901: 'ALIASED_POINT_SIZE_RANGE',
++  33902: 'ALIASED_LINE_WIDTH_RANGE',
++  33984: 'TEXTURE0',
++  33985: 'TEXTURE1',
++  33986: 'TEXTURE2',
++  33987: 'TEXTURE3',
++  33988: 'TEXTURE4',
++  33989: 'TEXTURE5',
++  33990: 'TEXTURE6',
++  33991: 'TEXTURE7',
++  33992: 'TEXTURE8',
++  33993: 'TEXTURE9',
++  33994: 'TEXTURE10',
++  33995: 'TEXTURE11',
++  33996: 'TEXTURE12',
++  33997: 'TEXTURE13',
++  33998: 'TEXTURE14',
++  33999: 'TEXTURE15',
++  34000: 'TEXTURE16',
++  34001: 'TEXTURE17',
++  34002: 'TEXTURE18',
++  34003: 'TEXTURE19',
++  34004: 'TEXTURE20',
++  34005: 'TEXTURE21',
++  34006: 'TEXTURE22',
++  34007: 'TEXTURE23',
++  34008: 'TEXTURE24',
++  34009: 'TEXTURE25',
++  34010: 'TEXTURE26',
++  34011: 'TEXTURE27',
++  34012: 'TEXTURE28',
++  34013: 'TEXTURE29',
++  34014: 'TEXTURE30',
++  34015: 'TEXTURE31',
++  34016: 'ACTIVE_TEXTURE',
++  34024: 'MAX_RENDERBUFFER_SIZE',
++  34041: 'DEPTH_STENCIL',
++  34055: 'INCR_WRAP',
++  34056: 'DECR_WRAP',
++  34067: 'TEXTURE_CUBE_MAP',
++  34068: 'TEXTURE_BINDING_CUBE_MAP',
++  34069: 'TEXTURE_CUBE_MAP_POSITIVE_X',
++  34070: 'TEXTURE_CUBE_MAP_NEGATIVE_X',
++  34071: 'TEXTURE_CUBE_MAP_POSITIVE_Y',
++  34072: 'TEXTURE_CUBE_MAP_NEGATIVE_Y',
++  34073: 'TEXTURE_CUBE_MAP_POSITIVE_Z',
++  34074: 'TEXTURE_CUBE_MAP_NEGATIVE_Z',
++  34076: 'MAX_CUBE_MAP_TEXTURE_SIZE',
++  34338: 'VERTEX_ATTRIB_ARRAY_ENABLED',
++  34339: 'VERTEX_ATTRIB_ARRAY_SIZE',
++  34340: 'VERTEX_ATTRIB_ARRAY_STRIDE',
++  34341: 'VERTEX_ATTRIB_ARRAY_TYPE',
++  34342: 'CURRENT_VERTEX_ATTRIB',
++  34373: 'VERTEX_ATTRIB_ARRAY_POINTER',
++  34466: 'NUM_COMPRESSED_TEXTURE_FORMATS',
++  34467: 'COMPRESSED_TEXTURE_FORMATS',
++  34660: 'BUFFER_SIZE',
++  34661: 'BUFFER_USAGE',
++  34816: 'STENCIL_BACK_FUNC',
++  34817: 'STENCIL_BACK_FAIL',
++  34818: 'STENCIL_BACK_PASS_DEPTH_FAIL',
++  34819: 'STENCIL_BACK_PASS_DEPTH_PASS',
++  34877: 'BLEND_EQUATION_ALPHA',
++  34921: 'MAX_VERTEX_ATTRIBS',
++  34922: 'VERTEX_ATTRIB_ARRAY_NORMALIZED',
++  34930: 'MAX_TEXTURE_IMAGE_UNITS',
++  34962: 'ARRAY_BUFFER',
++  34963: 'ELEMENT_ARRAY_BUFFER',
++  34964: 'ARRAY_BUFFER_BINDING',
++  34965: 'ELEMENT_ARRAY_BUFFER_BINDING',
++  34975: 'VERTEX_ATTRIB_ARRAY_BUFFER_BINDING',
++  35040: 'STREAM_DRAW',
++  35044: 'STATIC_DRAW',
++  35048: 'DYNAMIC_DRAW',
++  35632: 'FRAGMENT_SHADER',
++  35633: 'VERTEX_SHADER',
++  35660: 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
++  35661: 'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
++  35663: 'SHADER_TYPE',
++  35664: 'FLOAT_VEC2',
++  35665: 'FLOAT_VEC3',
++  35666: 'FLOAT_VEC4',
++  35667: 'INT_VEC2',
++  35668: 'INT_VEC3',
++  35669: 'INT_VEC4',
++  35670: 'BOOL',
++  35671: 'BOOL_VEC2',
++  35672: 'BOOL_VEC3',
++  35673: 'BOOL_VEC4',
++  35674: 'FLOAT_MAT2',
++  35675: 'FLOAT_MAT3',
++  35676: 'FLOAT_MAT4',
++  35678: 'SAMPLER_2D',
++  35680: 'SAMPLER_CUBE',
++  35712: 'DELETE_STATUS',
++  35713: 'COMPILE_STATUS',
++  35714: 'LINK_STATUS',
++  35715: 'VALIDATE_STATUS',
++  35716: 'INFO_LOG_LENGTH',
++  35717: 'ATTACHED_SHADERS',
++  35718: 'ACTIVE_UNIFORMS',
++  35719: 'ACTIVE_UNIFORM_MAX_LENGTH',
++  35720: 'SHADER_SOURCE_LENGTH',
++  35721: 'ACTIVE_ATTRIBUTES',
++  35722: 'ACTIVE_ATTRIBUTE_MAX_LENGTH',
++  35724: 'SHADING_LANGUAGE_VERSION',
++  35725: 'CURRENT_PROGRAM',
++  36003: 'STENCIL_BACK_REF',
++  36004: 'STENCIL_BACK_VALUE_MASK',
++  36005: 'STENCIL_BACK_WRITEMASK',
++  36006: 'FRAMEBUFFER_BINDING',
++  36007: 'RENDERBUFFER_BINDING',
++  36048: 'FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE',
++  36049: 'FRAMEBUFFER_ATTACHMENT_OBJECT_NAME',
++  36050: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL',
++  36051: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
++  36053: 'FRAMEBUFFER_COMPLETE',
++  36054: 'FRAMEBUFFER_INCOMPLETE_ATTACHMENT',
++  36055: 'FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT',
++  36057: 'FRAMEBUFFER_INCOMPLETE_DIMENSIONS',
++  36061: 'FRAMEBUFFER_UNSUPPORTED',
++  36064: 'COLOR_ATTACHMENT0',
++  36096: 'DEPTH_ATTACHMENT',
++  36128: 'STENCIL_ATTACHMENT',
++  36160: 'FRAMEBUFFER',
++  36161: 'RENDERBUFFER',
++  36162: 'RENDERBUFFER_WIDTH',
++  36163: 'RENDERBUFFER_HEIGHT',
++  36164: 'RENDERBUFFER_INTERNAL_FORMAT',
++  36168: 'STENCIL_INDEX8',
++  36176: 'RENDERBUFFER_RED_SIZE',
++  36177: 'RENDERBUFFER_GREEN_SIZE',
++  36178: 'RENDERBUFFER_BLUE_SIZE',
++  36179: 'RENDERBUFFER_ALPHA_SIZE',
++  36180: 'RENDERBUFFER_DEPTH_SIZE',
++  36181: 'RENDERBUFFER_STENCIL_SIZE',
++  36194: 'RGB565',
++  36336: 'LOW_FLOAT',
++  36337: 'MEDIUM_FLOAT',
++  36338: 'HIGH_FLOAT',
++  36339: 'LOW_INT',
++  36340: 'MEDIUM_INT',
++  36341: 'HIGH_INT',
++  36346: 'SHADER_COMPILER',
++  36347: 'MAX_VERTEX_UNIFORM_VECTORS',
++  36348: 'MAX_VARYING_VECTORS',
++  36349: 'MAX_FRAGMENT_UNIFORM_VECTORS',
++  37440: 'UNPACK_FLIP_Y_WEBGL',
++  37441: 'UNPACK_PREMULTIPLY_ALPHA_WEBGL',
++  37442: 'CONTEXT_LOST_WEBGL',
++  37443: 'UNPACK_COLORSPACE_CONVERSION_WEBGL',
++  37444: 'BROWSER_DEFAULT_WEBGL'
++}
+ 
+-      //Shift indices back
+-      p = c;
+-      c = n;
+-      n = f[(j+1) % f.length];
++},{}],123:[function(require,module,exports){
++var gl10 = require('./1.0/numbers')
+ 
+-      var v0 = positions[p];
+-      var v1 = positions[c];
+-      var v2 = positions[n];
++module.exports = function lookupConstant (number) {
++  return gl10[number]
++}
+ 
+-      //Compute infineteismal arcs
+-      var d01 = new Array(3);
+-      var m01 = 0.0;
+-      var d21 = new Array(3);
+-      var m21 = 0.0;
+-      for(var k=0; k<3; ++k) {
+-        d01[k] = v0[k]  - v1[k];
+-        m01   += d01[k] * d01[k];
+-        d21[k] = v2[k]  - v1[k];
+-        m21   += d21[k] * d21[k];
+-      }
++},{"./1.0/numbers":122}],124:[function(require,module,exports){
++'use strict'
+ 
+-      //Accumulate values in normal
+-      if(m01 * m21 > epsilon) {
+-        var norm = normals[c];
+-        var w = 1.0 / Math.sqrt(m01 * m21);
+-        for(var k=0; k<3; ++k) {
+-          var u = (k+1)%3;
+-          var v = (k+2)%3;
+-          norm[k] += w * (d21[u] * d01[v] - d21[v] * d01[u]);
+-        }
+-      }
+-    }
+-  }
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var pool = require('typedarray-pool')
++var shaders = require('./lib/shaders')
+ 
+-  //Scale all normals to unit length
+-  for(var i=0; i<N; ++i) {
+-    var norm = normals[i];
+-    var m = 0.0;
+-    for(var k=0; k<3; ++k) {
+-      m += norm[k] * norm[k];
+-    }
+-    if(m > epsilon) {
+-      var w = 1.0 / Math.sqrt(m);
+-      for(var k=0; k<3; ++k) {
+-        norm[k] *= w;
+-      }
+-    } else {
+-      for(var k=0; k<3; ++k) {
+-        norm[k] = 0.0;
+-      }
+-    }
+-  }
++module.exports = createError2D
+ 
+-  //Return the resulting set of patches
+-  return normals;
+-}
++var WEIGHTS = [
++  // x-error bar
++  [1, 0, 0, 1, 0, 0],
++  [1, 0, 0, -1, 0, 0],
++  [-1, 0, 0, -1, 0, 0],
+ 
+-//Compute face normals of a mesh
+-exports.faceNormals = function(faces, positions, specifiedEpsilon) {
++  [-1, 0, 0, -1, 0, 0],
++  [-1, 0, 0, 1, 0, 0],
++  [1, 0, 0, 1, 0, 0],
+ 
+-  var N         = faces.length;
+-  var normals   = new Array(N);
+-  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_FACE_EPSILON : specifiedEpsilon;
++  // x-error right cap
++  [1, 0, -1, 0, 0, 1],
++  [1, 0, -1, 0, 0, -1],
++  [1, 0, 1, 0, 0, -1],
+ 
+-  for(var i=0; i<N; ++i) {
+-    var f = faces[i];
+-    var pos = new Array(3);
+-    for(var j=0; j<3; ++j) {
+-      pos[j] = positions[f[j]];
+-    }
++  [1, 0, 1, 0, 0, -1],
++  [1, 0, 1, 0, 0, 1],
++  [1, 0, -1, 0, 0, 1],
+ 
+-    var d01 = new Array(3);
+-    var d21 = new Array(3);
+-    for(var j=0; j<3; ++j) {
+-      d01[j] = pos[1][j] - pos[0][j];
+-      d21[j] = pos[2][j] - pos[0][j];
+-    }
++  // x-error left cap
++  [-1, 0, -1, 0, 0, 1],
++  [-1, 0, -1, 0, 0, -1],
++  [-1, 0, 1, 0, 0, -1],
+ 
+-    var n = new Array(3);
+-    var l = 0.0;
+-    for(var j=0; j<3; ++j) {
+-      var u = (j+1)%3;
+-      var v = (j+2)%3;
+-      n[j] = d01[u] * d21[v] - d01[v] * d21[u];
+-      l += n[j] * n[j];
+-    }
+-    if(l > epsilon) {
+-      l = 1.0 / Math.sqrt(l);
+-    } else {
+-      l = 0.0;
+-    }
+-    for(var j=0; j<3; ++j) {
+-      n[j] *= l;
+-    }
+-    normals[i] = n;
+-  }
+-  return normals;
+-}
++  [-1, 0, 1, 0, 0, -1],
++  [-1, 0, 1, 0, 0, 1],
++  [-1, 0, -1, 0, 0, 1],
+ 
++  // y-error bar
++  [0, 1, 1, 0, 0, 0],
++  [0, 1, -1, 0, 0, 0],
++  [0, -1, -1, 0, 0, 0],
+ 
++  [0, -1, -1, 0, 0, 0],
++  [0, 1, 1, 0, 0, 0],
++  [0, -1, 1, 0, 0, 0],
+ 
+-},{}],159:[function(require,module,exports){
+-//Optimized version for triangle closest point
+-// Based on Eberly's WildMagick codes
+-// http://www.geometrictools.com/LibMathematics/Distance/Distance.html
+-"use strict";
++  // y-error top cap
++  [0, 1, 0, -1, 1, 0],
++  [0, 1, 0, -1, -1, 0],
++  [0, 1, 0, 1, -1, 0],
+ 
+-var diff = new Float64Array(4);
+-var edge0 = new Float64Array(4);
+-var edge1 = new Float64Array(4);
++  [0, 1, 0, 1, 1, 0],
++  [0, 1, 0, -1, 1, 0],
++  [0, 1, 0, 1, -1, 0],
+ 
+-function closestPoint2d(V0, V1, V2, point, result) {
+-  //Reallocate buffers if necessary
+-  if(diff.length < point.length) {
+-    diff = new Float64Array(point.length);
+-    edge0 = new Float64Array(point.length);
+-    edge1 = new Float64Array(point.length);
+-  }
+-  //Compute edges
+-  for(var i=0; i<point.length; ++i) {
+-    diff[i]  = V0[i] - point[i];
+-    edge0[i] = V1[i] - V0[i];
+-    edge1[i] = V2[i] - V0[i];
+-  }
+-  //Compute coefficients for quadratic func
+-  var a00 = 0.0
+-    , a01 = 0.0
+-    , a11 = 0.0
+-    , b0  = 0.0
+-    , b1  = 0.0
+-    , c   = 0.0;
+-  for(var i=0; i<point.length; ++i) {
+-    var e0 = edge0[i]
+-      , e1 = edge1[i]
+-      , d  = diff[i];
+-    a00 += e0 * e0;
+-    a01 += e0 * e1;
+-    a11 += e1 * e1;
+-    b0  += d * e0;
+-    b1  += d * e1;
+-    c   += d * d;
+-  }
+-  //Compute determinant/coeffs
+-  var det = Math.abs(a00*a11 - a01*a01);
+-  var s   = a01*b1 - a11*b0;
+-  var t   = a01*b0 - a00*b1;
+-  var sqrDistance;
+-  //Hardcoded Voronoi diagram classification
+-  if (s + t <= det) {
+-    if (s < 0) {
+-      if (t < 0) { // region 4
+-        if (b0 < 0) {
+-          t = 0;
+-          if (-b0 >= a00) {
+-            s = 1.0;
+-            sqrDistance = a00 + 2.0*b0 + c;
+-          } else {
+-            s = -b0/a00;
+-            sqrDistance = b0*s + c;
+-          }
+-        } else {
+-          s = 0;
+-          if (b1 >= 0) {
+-            t = 0;
+-            sqrDistance = c;
+-          } else if (-b1 >= a11) {
+-            t = 1;
+-            sqrDistance = a11 + 2.0*b1 + c;
+-          } else {
+-            t = -b1/a11;
+-            sqrDistance = b1*t + c;
+-          }
+-        }
+-      } else {  // region 3
+-        s = 0;
+-        if (b1 >= 0) {
+-          t = 0;
+-          sqrDistance = c;
+-        } else if (-b1 >= a11) {
+-          t = 1;
+-          sqrDistance = a11 + 2.0*b1 + c;
+-        } else {
+-          t = -b1/a11;
+-          sqrDistance = b1*t + c;
+-        }
+-      }
+-    } else if (t < 0) { // region 5
+-      t = 0;
+-      if (b0 >= 0) {
+-        s = 0;
+-        sqrDistance = c;
+-      } else if (-b0 >= a00) {
+-        s = 1;
+-        sqrDistance = a00 + 2.0*b0 + c;
+-      } else {
+-        s = -b0/a00;
+-        sqrDistance = b0*s + c;
+-      }
+-    } else {  // region 0
+-      // minimum at interior point
+-      var invDet = 1.0 / det;
+-      s *= invDet;
+-      t *= invDet;
+-      sqrDistance = s*(a00*s + a01*t + 2.0*b0) + t*(a01*s + a11*t + 2.0*b1) + c;
+-    }
+-  } else {
+-    var tmp0, tmp1, numer, denom;
+-    
+-    if (s < 0) {  // region 2
+-      tmp0 = a01 + b0;
+-      tmp1 = a11 + b1;
+-      if (tmp1 > tmp0) {
+-        numer = tmp1 - tmp0;
+-        denom = a00 - 2.0*a01 + a11;
+-        if (numer >= denom) {
+-          s = 1;
+-          t = 0;
+-          sqrDistance = a00 + 2.0*b0 + c;
+-        } else {
+-          s = numer/denom;
+-          t = 1 - s;
+-          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
+-          t*(a01*s + a11*t + 2.0*b1) + c;
+-        }
+-      } else {
+-        s = 0;
+-        if (tmp1 <= 0) {
+-          t = 1;
+-          sqrDistance = a11 + 2.0*b1 + c;
+-        } else if (b1 >= 0) {
+-          t = 0;
+-          sqrDistance = c;
+-        } else {
+-          t = -b1/a11;
+-          sqrDistance = b1*t + c;
+-        }
+-      }
+-    } else if (t < 0) {  // region 6
+-      tmp0 = a01 + b1;
+-      tmp1 = a00 + b0;
+-      if (tmp1 > tmp0) {
+-        numer = tmp1 - tmp0;
+-        denom = a00 - 2.0*a01 + a11;
+-        if (numer >= denom) {
+-          t = 1;
+-          s = 0;
+-          sqrDistance = a11 + 2.0*b1 + c;
+-        } else {
+-          t = numer/denom;
+-          s = 1 - t;
+-          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
+-          t*(a01*s + a11*t + 2.0*b1) + c;
+-        }
+-      } else {
+-        t = 0;
+-        if (tmp1 <= 0) {
+-          s = 1;
+-          sqrDistance = a00 + 2.0*b0 + c;
+-        } else if (b0 >= 0) {
+-          s = 0;
+-          sqrDistance = c;
+-        } else {
+-          s = -b0/a00;
+-          sqrDistance = b0*s + c;
+-        }
+-      }
+-    } else {  // region 1
+-      numer = a11 + b1 - a01 - b0;
+-      if (numer <= 0) {
+-        s = 0;
+-        t = 1;
+-        sqrDistance = a11 + 2.0*b1 + c;
+-      } else {
+-        denom = a00 - 2.0*a01 + a11;
+-        if (numer >= denom) {
+-          s = 1;
+-          t = 0;
+-          sqrDistance = a00 + 2.0*b0 + c;
+-        } else {
+-          s = numer/denom;
+-          t = 1 - s;
+-          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
+-          t*(a01*s + a11*t + 2.0*b1) + c;
+-        }
+-      }
+-    }
+-  }
+-  var u = 1.0 - s - t;
+-  for(var i=0; i<point.length; ++i) {
+-    result[i] = u * V0[i] + s * V1[i] + t * V2[i];
+-  }
+-  if(sqrDistance < 0) {
+-    return 0;
+-  }
+-  return sqrDistance;
+-}
++  // y-error bottom cap
++  [0, -1, 0, -1, 1, 0],
++  [0, -1, 0, -1, -1, 0],
++  [0, -1, 0, 1, -1, 0],
+ 
+-module.exports = closestPoint2d;
++  [0, -1, 0, 1, 1, 0],
++  [0, -1, 0, -1, 1, 0],
++  [0, -1, 0, 1, -1, 0]
++]
+ 
+-},{}],160:[function(require,module,exports){
+-'use strict'
++function GLError2D (plot, shader, buffer) {
++  this.plot = plot
+ 
+-module.exports = extractContour
++  this.shader = shader
++  this.buffer = buffer
+ 
+-var ndarray = require('ndarray')
+-var pool    = require('typedarray-pool')
+-var ndsort  = require('ndarray-sort')
++  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
+ 
+-var contourAlgorithm = require('./lib/codegen')
++  this.numPoints = 0
+ 
+-function getDimension(cells) {
+-  var numCells = cells.length
+-  var d = 0
+-  for(var i=0; i<numCells; ++i) {
+-    d = Math.max(d, cells[i].length)|0
+-  }
+-  return d-1
++  this.color = [0, 0, 0, 1]
+ }
+ 
+-function getSigns(values, level) {
+-  var numVerts    = values.length
+-  var vertexSigns = pool.mallocUint8(numVerts)
+-  for(var i=0; i<numVerts; ++i) {
+-    vertexSigns[i] = (values[i] < level)|0
+-  }
+-  return vertexSigns
+-}
++var proto = GLError2D.prototype
+ 
+-function getEdges(cells, d) {
+-  var numCells = cells.length
+-  var maxEdges = ((d * (d+1)/2) * numCells)|0
+-  var edges    = pool.mallocUint32(maxEdges*2)
+-  var ePtr     = 0
+-  for(var i=0; i<numCells; ++i) {
+-    var c = cells[i]
+-    var d = c.length
+-    for(var j=0; j<d; ++j) {
+-      for(var k=0; k<j; ++k) {
+-        var a = c[k]
+-        var b = c[j]
+-        edges[ePtr++] = Math.min(a,b)|0
+-        edges[ePtr++] = Math.max(a,b)|0
+-      }
+-    }
+-  }
+-  var nedges = (ePtr/2)|0
+-  ndsort(ndarray(edges, [nedges,2])) 
+-  var ptr = 2
+-  for(var i=2; i<ePtr; i+=2) {
+-    if(edges[i-2] === edges[i] &&
+-       edges[i-1] === edges[i+1]) {
+-      continue
+-    }
+-    edges[ptr++] = edges[i]
+-    edges[ptr++] = edges[i+1]
+-  }
++proto.draw = (function () {
++  var MATRIX = [
++    1, 0, 0,
++    0, 1, 0,
++    0, 0, 1
++  ]
+ 
+-  return ndarray(edges, [(ptr/2)|0, 2])
+-}
++  var PIXEL_SCALE = [1, 1]
+ 
+-function getCrossingWeights(edges, values, signs, level) {
+-  var edata     = edges.data
+-  var numEdges  = edges.shape[0]
+-  var weights   = pool.mallocDouble(numEdges)
+-  var ptr       = 0
+-  for(var i=0; i<numEdges; ++i) {
+-    var a  = edata[2*i]
+-    var b  = edata[2*i+1]
+-    if(signs[a] === signs[b]) {
+-      continue
+-    }
+-    var va = values[a]
+-    var vb = values[b]
+-    edata[2*ptr]     = a
+-    edata[2*ptr+1]   = b
+-    weights[ptr++]   = (vb - level) / (vb - va)
+-  }
+-  edges.shape[0] = ptr
+-  return ndarray(weights, [ptr])
+-}
++  return function () {
++    var plot = this.plot
++    var shader = this.shader
++    var buffer = this.buffer
++    var bounds = this.bounds
++    var numPoints = this.numPoints
+ 
+-function getCascade(edges, numVerts) {
+-  var result   = pool.mallocInt32(numVerts*2)
+-  var numEdges = edges.shape[0]
+-  var edata    = edges.data
+-  result[0]    = 0
+-  var lastV    = 0
+-  for(var i=0; i<numEdges; ++i) {
+-    var a = edata[2*i]
+-    if(a !== lastV) {
+-      result[2*lastV+1] = i
+-      while(++lastV < a) {
+-        result[2*lastV] = i
+-        result[2*lastV+1] = i
+-      }
+-      result[2*lastV] = i
++    if (!numPoints) {
++      return
+     }
+-  }
+-  result[2*lastV+1] = numEdges
+-  while(++lastV < numVerts) {
+-    result[2*lastV] = result[2*lastV+1] = numEdges
+-  }
+-  return result
+-}
+ 
+-function unpackEdges(edges) {
+-  var ne = edges.shape[0]|0
+-  var edata = edges.data
+-  var result = new Array(ne)
+-  for(var i=0; i<ne; ++i) {
+-    result[i] = [edata[2*i], edata[2*i+1]]
+-  }
+-  return result
+-}
++    var gl = plot.gl
++    var dataBox = plot.dataBox
++    var viewBox = plot.viewBox
++    var pixelRatio = plot.pixelRatio
+ 
+-function extractContour(cells, values, level, d) {
+-  level = level||0.0
++    var boundX = bounds[2] - bounds[0]
++    var boundY = bounds[3] - bounds[1]
++    var dataX = dataBox[2] - dataBox[0]
++    var dataY = dataBox[3] - dataBox[1]
+ 
+-  //If user didn't specify `d`, use brute force scan
+-  if(typeof d === 'undefined') {
+-    d = getDimension(cells)
+-  }
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-  //Count number of cells
+-  var numCells = cells.length
+-  if(numCells === 0 || d < 1) {
+-    return {
+-      cells:         [],
+-      vertexIds:     [],
+-      vertexWeights: []
+-    }
+-  }
++    var screenX = viewBox[2] - viewBox[0]
++    var screenY = viewBox[3] - viewBox[1]
+ 
+-  //Read in vertex signs
+-  var vertexSigns = getSigns(values, +level)
++    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
++    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
+ 
+-  //First get 1-skeleton, find all crossings
+-  var edges   = getEdges(cells, d)
+-  var weights = getCrossingWeights(edges, values, vertexSigns, +level)
++    buffer.bind()
++    shader.bind()
+ 
+-  //Build vertex cascade to speed up binary search
+-  var vcascade = getCascade(edges, values.length|0)
++    shader.uniforms.viewTransform = MATRIX
++    shader.uniforms.pixelScale = PIXEL_SCALE
++    shader.uniforms.color = this.color
+ 
+-  //Then construct cells
+-  var faces = contourAlgorithm(d)(cells, edges.data, vcascade, vertexSigns)
++    shader.attributes.position.pointer(
++      gl.FLOAT,
++      false,
++      16,
++      0)
+ 
+-  //Unpack data into pretty format
+-  var uedges   = unpackEdges(edges)
+-  var uweights = [].slice.call(weights.data, 0, weights.shape[0])
++    shader.attributes.pixelOffset.pointer(
++      gl.FLOAT,
++      false,
++      16,
++      8)
+ 
+-  //Release data
+-  pool.free(vertexSigns)
+-  pool.free(edges.data)
+-  pool.free(weights.data)
+-  pool.free(vcascade)
+-  
+-  return {
+-    cells:         faces,
+-    vertexIds:     uedges,
+-    vertexWeights: uweights
++    gl.drawArrays(gl.TRIANGLES, 0, numPoints * WEIGHTS.length)
+   }
++})()
++
++proto.drawPick = function (offset) { return offset }
++proto.pick = function (x, y) {
++  return null
+ }
+-},{"./lib/codegen":161,"ndarray":433,"ndarray-sort":164,"typedarray-pool":458}],161:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = getPolygonizer
++proto.update = function (options) {
++  options = options || {}
+ 
+-var pool = require('typedarray-pool')
+-var createMSTable = require('marching-simplex-table')
++  var i, x, y
+ 
+-var CACHE = {}
++  var positions = options.positions || []
++  var errors = options.errors || []
+ 
+-function createCellPolygonizer(d) {
+-  var maxCellSize = 0
+-  var tables = new Array(d+1)
+-  tables[0] = [ [] ]
+-  for(var i=1; i<=d; ++i) {
+-    var tab = tables[i] = createMSTable(i)
+-    for(var j=0; j<tab.length; ++j) {
+-      maxCellSize = Math.max(maxCellSize, tab[i].length)
+-    }
++  var lineWidth = 1
++  if ('lineWidth' in options) {
++    lineWidth = +options.lineWidth
+   }
+ 
+-  var code  = [
+-  'function B(C,E,i,j){',
+-    'var a=Math.min(i,j)|0,b=Math.max(i,j)|0,l=C[2*a],h=C[2*a+1];',
+-    'while(l<h){',
+-      'var m=(l+h)>>1,v=E[2*m+1];',
+-      'if(v===b){return m}',
+-      'if(b<v){h=m}else{l=m+1}',
+-    '}',
+-    'return l;',
+-  '};',
+-  'function getContour', d, 'd(F,E,C,S){',
+-    'var n=F.length,R=[];',
+-    'for(var i=0;i<n;++i){var c=F[i],l=c.length;'
+-  ]
+-
+-  function generateCase(facets) {
+-    if(facets.length <= 0) {
+-      return
+-    }
+-    code.push('R.push(')
+-    for(var i=0; i<facets.length; ++i) {
+-      var facet = facets[i]
+-      if(i > 0) {
+-        code.push(',')
+-      }
+-      code.push('[')
+-      for(var j=0; j<facet.length; ++j) {
+-        var f = facet[j]
+-        if(j > 0) {
+-          code.push(',')
+-        }
+-        code.push('B(C,E,c[', f[0], '],c[', f[1], '])')
+-      }
+-      code.push(']')
+-    }
+-    code.push(');')
++  var capSize = 5
++  if ('capSize' in options) {
++    capSize = +options.capSize
+   }
+ 
+-  for(var i=d+1; i>1; --i) {
+-    if(i < d+1) {
+-      code.push('else ')
+-    }
+-    code.push('if(l===', i, '){')
++  this.color = (options.color || [0, 0, 0, 1]).slice()
+ 
+-    //Generate mask
+-    var maskStr = []
+-    for(var j=0; j<i; ++j) {
+-      maskStr.push('(S[c['+j+']]<<'+j+')')
+-    }
++  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
+ 
+-    //Perform table look up
+-    code.push('var M=', maskStr.join('+'), 
+-      ';if(M===0||M===', (1<<i)-1, 
+-        '){continue}switch(M){')
++  var numPoints = this.numPoints = positions.length >> 1
++  for (i = 0; i < numPoints; ++i) {
++    x = positions[i * 2]
++    y = positions[i * 2 + 1]
+ 
+-    var tab = tables[i-1]
+-    for(var j=0; j<tab.length; ++j) {
+-      code.push('case ', j, ':')
+-      generateCase(tab[j])
+-      code.push('break;')
+-    }
+-    code.push('}}')
++    bounds[0] = Math.min(x, bounds[0])
++    bounds[1] = Math.min(y, bounds[1])
++    bounds[2] = Math.max(x, bounds[2])
++    bounds[3] = Math.max(y, bounds[3])
+   }
+-  code.push('}return R;};return getContour', d, 'd')
+-
+-  var proc = new Function('pool', code.join(''))
+-  return proc(pool)
+-}
+-
+-function getPolygonizer(d) {
+-  var alg = CACHE[d]
+-  if(!alg) {
+-    alg = CACHE[d] = createCellPolygonizer(d) 
++  if (bounds[2] === bounds[0]) {
++    bounds[2] += 1
+   }
+-  return alg
+-}
+-},{"marching-simplex-table":162,"typedarray-pool":458}],162:[function(require,module,exports){
+-'use strict'
++  if (bounds[3] === bounds[1]) {
++    bounds[3] += 1
++  }
++  var sx = 1.0 / (bounds[2] - bounds[0])
++  var sy = 1.0 / (bounds[3] - bounds[1])
++  var tx = bounds[0]
++  var ty = bounds[1]
+ 
+-module.exports = createTable
++  var bufferData = pool.mallocFloat32(numPoints * WEIGHTS.length * 4)
++  var ptr = 0
++  for (i = 0; i < numPoints; ++i) {
++    x = positions[2 * i]
++    y = positions[2 * i + 1]
++    var ex0 = errors[4 * i]
++    var ex1 = errors[4 * i + 1]
++    var ey0 = errors[4 * i + 2]
++    var ey1 = errors[4 * i + 3]
+ 
+-var chull = require('convex-hull')
++    for (var j = 0; j < WEIGHTS.length; ++j) {
++      var w = WEIGHTS[j]
+ 
+-function constructVertex(d, a, b) {
+-  var x = new Array(d)
+-  for(var i=0; i<d; ++i) {
+-    x[i] = 0.0
+-    if(i === a) {
+-      x[i] += 0.5
+-    }
+-    if(i === b) {
+-      x[i] += 0.5
+-    }
+-  }
+-  return x
+-}
++      var dx = w[0]
++      var dy = w[1]
+ 
+-function constructCell(dimension, mask) {
+-  if(mask === 0 || mask === (1<<(dimension+1))-1) {
+-    return []
+-  }
+-  var points = []
+-  var index  = []
+-  for(var i=0; i<=dimension; ++i) {
+-    if(mask & (1<<i)) {
+-      points.push(constructVertex(dimension, i-1, i-1))
+-      index.push(null)
+-      for(var j=0; j<=dimension; ++j) {
+-        if(~mask & (1<<j)) {
+-          points.push(constructVertex(dimension, i-1, j-1))
+-          index.push([i,j])
+-        }
++      if (dx < 0) {
++        dx *= ex0
++      } else if (dx > 0) {
++        dx *= ex1
+       }
+-    }
+-  }
+-  
+-  //Preprocess points so first d+1 points are linearly independent
+-  var hull = chull(points)
+-  var faces = []
+-i_loop:
+-  for(var i=0; i<hull.length; ++i) {
+-    var face = hull[i]
+-    var nface = []
+-    for(var j=0; j<face.length; ++j) {
+-      if(!index[face[j]]) {
+-        continue i_loop
++
++      if (dy < 0) {
++        dy *= ey0
++      } else if (dy > 0) {
++        dy *= ey1
+       }
+-      nface.push(index[face[j]].slice())
++
++      bufferData[ptr++] = sx * ((x - tx) + dx)
++      bufferData[ptr++] = sy * ((y - ty) + dy)
++      bufferData[ptr++] = lineWidth * w[2] + (capSize + lineWidth) * w[4]
++      bufferData[ptr++] = lineWidth * w[3] + (capSize + lineWidth) * w[5]
+     }
+-    faces.push(nface)
+   }
+-  return faces
++  this.buffer.update(bufferData)
++  pool.free(bufferData)
+ }
+ 
+-function createTable(dimension) {
+-  var numCells = 1<<(dimension+1)
+-  var result = new Array(numCells)
+-  for(var i=0; i<numCells; ++i) {
+-    result[i] = constructCell(dimension, i)
+-  }
+-  return result
++proto.dispose = function () {
++  this.plot.removeObject(this)
++  this.shader.dispose()
++  this.buffer.dispose()
+ }
+-},{"convex-hull":108}],163:[function(require,module,exports){
+-"use strict"
+ 
+-var pool = require("typedarray-pool")
++function createError2D (plot, options) {
++  var shader = createShader(plot.gl, shaders.vertex, shaders.fragment)
++  var buffer = createBuffer(plot.gl)
+ 
+-var INSERTION_SORT_THRESHOLD = 32
++  var errorbars = new GLError2D(plot, shader, buffer)
+ 
+-function getMallocFree(dtype) {
+-  switch(dtype) {
+-    case "uint8":
+-      return [pool.mallocUint8, pool.freeUint8]
+-    case "uint16":
+-      return [pool.mallocUint16, pool.freeUint16]
+-    case "uint32":
+-      return [pool.mallocUint32, pool.freeUint32]
+-    case "int8":
+-      return [pool.mallocInt8, pool.freeInt8]
+-    case "int16":
+-      return [pool.mallocInt16, pool.freeInt16]
+-    case "int32":
+-      return [pool.mallocInt32, pool.freeInt32]
+-    case "float32":
+-      return [pool.mallocFloat, pool.freeFloat]
+-    case "float64":
+-      return [pool.mallocDouble, pool.freeDouble]
+-    default:
+-      return null
+-  }
++  errorbars.update(options)
++
++  plot.addObject(errorbars)
++
++  return errorbars
+ }
+ 
+-function shapeArgs(dimension) {
+-  var args = []
+-  for(var i=0; i<dimension; ++i) {
+-    args.push("s"+i)
+-  }
+-  for(var i=0; i<dimension; ++i) {
+-    args.push("n"+i)
+-  }
+-  for(var i=1; i<dimension; ++i) {
+-    args.push("d"+i)
+-  }
+-  for(var i=1; i<dimension; ++i) {
+-    args.push("e"+i)
+-  }
+-  for(var i=1; i<dimension; ++i) {
+-    args.push("f"+i)
+-  }
+-  return args
++},{"./lib/shaders":125,"gl-buffer":121,"gl-shader":190,"typedarray-pool":449}],125:[function(require,module,exports){
++
++
++module.exports = {
++  vertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 pixelOffset;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvoid main() {\n  vec3 scrPosition = viewTransform * vec3(position, 1);\n  gl_Position = vec4(\n    scrPosition.xy + scrPosition.z * pixelScale * pixelOffset,\n    0,\n    scrPosition.z);\n}\n",
++  fragment: "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
+ }
+ 
+-function createInsertionSort(order, dtype) {
++},{}],126:[function(require,module,exports){
++'use strict'
+ 
+-  var code = ["'use strict'"]
+-  var funcName = ["ndarrayInsertionSort", order.join("d"), dtype].join("")
+-  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
+-  var allocator = getMallocFree(dtype)
+-  
+-  var vars = [ "i,j,cptr,ptr=left*s0+offset" ]
+-  
+-  if(order.length > 1) {
+-    var scratch_shape = []
+-    for(var i=1; i<order.length; ++i) {
+-      vars.push("i"+i)
+-      scratch_shape.push("n"+i)
+-    }
+-    if(allocator) {
+-      vars.push("scratch=malloc(" + scratch_shape.join("*") + ")")
+-    } else {
+-      vars.push("scratch=new Array("+scratch_shape.join("*") + ")")
+-    }
+-    vars.push("dptr","sptr","a","b")
+-  } else {
+-    vars.push("scratch")
+-  }
+-  
+-  function dataRead(ptr) {
+-    if(dtype === "generic") {
+-      return ["data.get(", ptr, ")"].join("")
+-    }
+-    return ["data[",ptr,"]"].join("")
+-  }
+-  
+-  function dataWrite(ptr, v) {
+-    if(dtype === "generic") {
+-      return ["data.set(", ptr, ",", v, ")"].join("")
+-    }
+-    return ["data[",ptr,"]=",v].join("")
+-  }
+-  
+-  //Create function header
+-  code.push(
+-    ["function ", funcName, "(", funcArgs.join(","), "){var ", vars.join(",")].join(""),
+-      "for(i=left+1;i<=right;++i){",
+-        "j=i;ptr+=s0",
+-        "cptr=ptr")
+-  
+-  
+-  if(order.length > 1) {
+-  
+-    //Copy data into scratch
+-    code.push("dptr=0;sptr=ptr")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    code.push("scratch[dptr++]=",dataRead("sptr"))
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push("sptr+=d"+j,"}")
+-    }
++module.exports = createErrorBars
+ 
+-    
+-    //Compare items in outer loop
+-    code.push("__g:while(j-->left){",
+-              "dptr=0",
+-              "sptr=cptr-s0")
+-    for(var i=1; i<order.length; ++i) {
+-      if(i === 1) {
+-        code.push("__l:")
+-      }
+-      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
+-    }
+-    code.push(["a=", dataRead("sptr"),"\nb=scratch[dptr]\nif(a<b){break __g}\nif(a>b){break __l}"].join(""))
+-    for(var i=order.length-1; i>=1; --i) {
+-      code.push(
+-        "sptr+=e"+i,
+-        "dptr+=f"+i,
+-        "}")
+-    }
+-    
+-    //Copy data back
+-    code.push("dptr=cptr;sptr=cptr-s0")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    code.push(dataWrite("dptr", dataRead("sptr")))
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["dptr+=d",j,";sptr+=d",j].join(""),"}")
+-    }
+-    
+-    //Close while loop
+-    code.push("cptr-=s0\n}")
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var createShader  = require('./shaders/index')
+ 
+-    //Copy scratch into cptr
+-    code.push("dptr=cptr;sptr=0")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    code.push(dataWrite("dptr", "scratch[sptr++]"))
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push("dptr+=d"+j,"}")
+-    }
+-  } else {
+-    code.push("scratch=" + dataRead("ptr"),
+-              "while((j-->left)&&("+dataRead("cptr-s0")+">scratch)){",
+-                dataWrite("cptr", dataRead("cptr-s0")),
+-                "cptr-=s0",
+-              "}",
+-              dataWrite("cptr", "scratch"))
+-  }
+-  
+-  //Close outer loop body
+-  code.push("}")
+-  if(order.length > 1 && allocator) {
+-    code.push("free(scratch)")
+-  }
+-  code.push("} return " + funcName)
+-  
+-  //Compile and link function
+-  if(allocator) {
+-    var result = new Function("malloc", "free", code.join("\n"))
+-    return result(allocator[0], allocator[1])
+-  } else {
+-    var result = new Function(code.join("\n"))
+-    return result()
+-  }
++var IDENTITY = [1,0,0,0,
++                0,1,0,0,
++                0,0,1,0,
++                0,0,0,1]
++
++function ErrorBars(gl, buffer, vao, shader) {
++  this.gl           = gl
++  this.shader       = shader
++  this.buffer       = buffer
++  this.vao          = vao
++  this.pixelRatio   = 1
++  this.bounds       = [[ Infinity, Infinity, Infinity], [-Infinity,-Infinity,-Infinity]]
++  this.clipBounds   = [[-Infinity,-Infinity,-Infinity], [ Infinity, Infinity, Infinity]]
++  this.lineWidth    = [1,1,1]
++  this.capSize      = [10,10,10]
++  this.lineCount    = [0,0,0]
++  this.lineOffset   = [0,0,0]
++  this.opacity      = 1
+ }
+ 
+-function createQuickSort(order, dtype, insertionSort) {
+-  var code = [ "'use strict'" ]
+-  var funcName = ["ndarrayQuickSort", order.join("d"), dtype].join("")
+-  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
+-  var allocator = getMallocFree(dtype)
+-  var labelCounter=0
+-  
+-  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
+-  
+-  var vars = [
+-    "sixth=((right-left+1)/6)|0",
+-    "index1=left+sixth",
+-    "index5=right-sixth",
+-    "index3=(left+right)>>1",
+-    "index2=index3-sixth",
+-    "index4=index3+sixth",
+-    "el1=index1",
+-    "el2=index2",
+-    "el3=index3",
+-    "el4=index4",
+-    "el5=index5",
+-    "less=left+1",
+-    "great=right-1",
+-    "pivots_are_equal=true",
+-    "tmp",
+-    "tmp0",
+-    "x",
+-    "y",
+-    "z",
+-    "k",
+-    "ptr0",
+-    "ptr1",
+-    "ptr2",
+-    "comp_pivot1=0",
+-    "comp_pivot2=0",
+-    "comp=0"
+-  ]
+-  
+-  if(order.length > 1) {
+-    var ele_size = []
+-    for(var i=1; i<order.length; ++i) {
+-      ele_size.push("n"+i)
+-      vars.push("i"+i)
+-    }
+-    for(var i=0; i<8; ++i) {
+-      vars.push("b_ptr"+i)
+-    }
+-    vars.push(
+-      "ptr3",
+-      "ptr4",
+-      "ptr5",
+-      "ptr6",
+-      "ptr7",
+-      "pivot_ptr",
+-      "ptr_shift",
+-      "elementSize="+ele_size.join("*"))
+-    if(allocator) {
+-      vars.push("pivot1=malloc(elementSize)",
+-                "pivot2=malloc(elementSize)")
+-    } else {
+-      vars.push("pivot1=new Array(elementSize),pivot2=new Array(elementSize)")
+-    }
+-  } else {
+-    vars.push("pivot1", "pivot2")
+-  }
+-  
+-  //Initialize local variables
+-  code.push("var " + vars.join(","))
+-  
+-  function toPointer(v) {
+-    return ["(offset+",v,"*s0)"].join("")
+-  }
+-  
+-  function dataRead(ptr) {
+-    if(dtype === "generic") {
+-      return ["data.get(", ptr, ")"].join("")
+-    }
+-    return ["data[",ptr,"]"].join("")
+-  }
+-  
+-  function dataWrite(ptr, v) {
+-    if(dtype === "generic") {
+-      return ["data.set(", ptr, ",", v, ")"].join("")
+-    }
+-    return ["data[",ptr,"]=",v].join("")
+-  }
+-  
+-  function cacheLoop(ptrs, usePivot, body) {
+-    if(ptrs.length === 1) {
+-      code.push("ptr0="+toPointer(ptrs[0]))
+-    } else {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
+-      }
+-    }
+-    if(usePivot) {
+-      code.push("pivot_ptr=0")
+-    }
+-    code.push("ptr_shift=offset")
+-    for(var i=order.length-1; i>=0; --i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+-    }
+-    if(ptrs.length > 1) {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
+-      }
+-    }
+-    code.push(body)
+-    if(usePivot) {
+-      code.push("++pivot_ptr")
+-    }
+-    for(var i=0; i<order.length; ++i) {
+-      var j = order[i]
+-      if(j === 0) {
+-        continue
+-      }
+-      if(ptrs.length>1) {
+-        code.push("ptr_shift+=d"+j)
+-      } else {
+-        code.push("ptr0+=d"+j)
+-      }
+-      code.push("}")
+-    }
+-  }
+-  
+-  function lexicoLoop(label, ptrs, usePivot, body) {
+-    if(ptrs.length === 1) {
+-      code.push("ptr0="+toPointer(ptrs[0]))
+-    } else {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
+-      }
+-      code.push("ptr_shift=offset")
+-    }
+-    if(usePivot) {
+-      code.push("pivot_ptr=0")
+-    }
+-    if(label) {
+-      code.push(label+":")
+-    }
+-    for(var i=1; i<order.length; ++i) {
+-      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
+-    }
+-    if(ptrs.length > 1) {
+-      for(var i=0; i<ptrs.length; ++i) {
+-        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
+-      }
+-    }
+-    code.push(body)
+-    for(var i=order.length-1; i>=1; --i) {
+-      if(usePivot) {
+-        code.push("pivot_ptr+=f"+i)
+-      }
+-      if(ptrs.length > 1) {
+-        code.push("ptr_shift+=e"+i)
+-      } else {
+-        code.push("ptr0+=e"+i)
+-      }
+-      code.push("}")
+-    }
+-  }
+-  
+-  function cleanUp() {
+-    if(order.length > 1 && allocator) {
+-      code.push("free(pivot1)", "free(pivot2)")
+-    }
+-  }
+-  
+-  function compareSwap(a_id, b_id) {
+-    var a = "el"+a_id
+-    var b = "el"+b_id
+-    if(order.length > 1) {
+-      var lbl = "__l" + (++labelCounter)
+-      lexicoLoop(lbl, [a, b], false, [
+-        "comp=",dataRead("ptr0"),"-",dataRead("ptr1"),"\n",
+-        "if(comp>0){tmp0=", a, ";",a,"=",b,";", b,"=tmp0;break ", lbl,"}\n",
+-        "if(comp<0){break ", lbl, "}"
+-      ].join(""))
+-    } else {
+-      code.push(["if(", dataRead(toPointer(a)), ">", dataRead(toPointer(b)), "){tmp0=", a, ";",a,"=",b,";", b,"=tmp0}"].join(""))
+-    }
++var proto = ErrorBars.prototype
++
++proto.isOpaque = function() {
++  return this.opacity >= 1
++}
++
++proto.isTransparent = function() {
++  return this.opacity < 1
++}
++
++proto.drawTransparent = proto.draw = function(cameraParams) {
++  var gl = this.gl
++  var uniforms        = this.shader.uniforms
++
++  this.shader.bind()
++  var view       = uniforms.view       = cameraParams.view       || IDENTITY
++  var projection = uniforms.projection = cameraParams.projection || IDENTITY
++  uniforms.model      = cameraParams.model      || IDENTITY
++  uniforms.clipBounds = this.clipBounds
++  uniforms.opacity    = this.opacity
++
++
++  var cx = view[12]
++  var cy = view[13]
++  var cz = view[14]
++  var cw = view[15]
++  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
++
++
++  this.vao.bind()
++  for(var i=0; i<3; ++i) {
++    gl.lineWidth(this.lineWidth[i])
++    uniforms.capSize = this.capSize[i] * pixelScaleF
++    gl.drawArrays(gl.LINES, this.lineOffset[i], this.lineCount[i])
+   }
+-  
+-  compareSwap(1, 2)
+-  compareSwap(4, 5)
+-  compareSwap(1, 3)
+-  compareSwap(2, 3)
+-  compareSwap(1, 4)
+-  compareSwap(3, 4)
+-  compareSwap(2, 5)
+-  compareSwap(2, 3)
+-  compareSwap(4, 5)
+-  
+-  if(order.length > 1) {
+-    cacheLoop(["el1", "el2", "el3", "el4", "el5", "index1", "index3", "index5"], true, [
+-      "pivot1[pivot_ptr]=",dataRead("ptr1"),"\n",
+-      "pivot2[pivot_ptr]=",dataRead("ptr3"),"\n",
+-      "pivots_are_equal=pivots_are_equal&&(pivot1[pivot_ptr]===pivot2[pivot_ptr])\n",
+-      "x=",dataRead("ptr0"),"\n",
+-      "y=",dataRead("ptr2"),"\n",
+-      "z=",dataRead("ptr4"),"\n",
+-      dataWrite("ptr5", "x"),"\n",
+-      dataWrite("ptr6", "y"),"\n",
+-      dataWrite("ptr7", "z")
+-    ].join(""))
+-  } else {
+-    code.push([
+-      "pivot1=", dataRead(toPointer("el2")), "\n",
+-      "pivot2=", dataRead(toPointer("el4")), "\n",
+-      "pivots_are_equal=pivot1===pivot2\n",
+-      "x=", dataRead(toPointer("el1")), "\n",
+-      "y=", dataRead(toPointer("el3")), "\n",
+-      "z=", dataRead(toPointer("el5")), "\n",
+-      dataWrite(toPointer("index1"), "x"), "\n",
+-      dataWrite(toPointer("index3"), "y"), "\n",
+-      dataWrite(toPointer("index5"), "z")
+-    ].join(""))
++  this.vao.unbind()
++}
++
++function updateBounds(bounds, point) {
++  for(var i=0; i<3; ++i) {
++    bounds[0][i] = Math.min(bounds[0][i], point[i])
++    bounds[1][i] = Math.max(bounds[1][i], point[i])
+   }
+-  
++}
+ 
+-  function moveElement(dst, src) {
+-    if(order.length > 1) {
+-      cacheLoop([dst, src], false,
+-        dataWrite("ptr0", dataRead("ptr1"))
+-      )
+-    } else {
+-      code.push(dataWrite(toPointer(dst), dataRead(toPointer(src))))
++var FACE_TABLE = (function(){
++  var table = new Array(3)
++  for(var d=0; d<3; ++d) {
++    var row = []
++    for(var j=1; j<=2; ++j) {
++      for(var s=-1; s<=1; s+=2) {
++        var u = (j+d) % 3
++        var y = [0,0,0]
++        y[u] = s
++        row.push(y)
++      }
+     }
++    table[d] = row
+   }
+-  
+-  moveElement("index2", "left")
+-  moveElement("index4", "right")
+-  
+-  function comparePivot(result, ptr, n) {
+-    if(order.length > 1) {
+-      var lbl = "__l" + (++labelCounter)
+-      lexicoLoop(lbl, [ptr], true, [
+-        result,"=",dataRead("ptr0"),"-pivot",n,"[pivot_ptr]\n",
+-        "if(",result,"!==0){break ", lbl, "}"
+-      ].join(""))
+-    } else {
+-      code.push([result,"=", dataRead(toPointer(ptr)), "-pivot", n].join(""))
+-    }
++  return table
++})()
++
++
++function emitFace(verts, x, c, d) {
++  var offsets = FACE_TABLE[d]
++  for(var i=0; i<offsets.length; ++i) {
++    var o = offsets[i]
++    verts.push(x[0], x[1], x[2],
++               c[0], c[1], c[2], c[3],
++               o[0], o[1], o[2])
+   }
+-  
+-  function swapElements(a, b) {
+-    if(order.length > 1) {
+-      cacheLoop([a,b],false,[
+-        "tmp=",dataRead("ptr0"),"\n",
+-        dataWrite("ptr0", dataRead("ptr1")),"\n",
+-        dataWrite("ptr1", "tmp")
+-      ].join(""))
+-    } else {
+-      code.push([
+-        "ptr0=",toPointer(a),"\n",
+-        "ptr1=",toPointer(b),"\n",
+-        "tmp=",dataRead("ptr0"),"\n",
+-        dataWrite("ptr0", dataRead("ptr1")),"\n",
+-        dataWrite("ptr1", "tmp")
+-      ].join(""))
++  return offsets.length
++}
++
++proto.update = function(options) {
++  options = options || {}
++
++  if('lineWidth' in options) {
++    this.lineWidth = options.lineWidth
++    if(!Array.isArray(this.lineWidth)) {
++      this.lineWidth = [this.lineWidth, this.lineWidth, this.lineWidth]
+     }
+   }
+-  
+-  function tripleSwap(k, less, great) {
+-    if(order.length > 1) {
+-      cacheLoop([k,less,great], false, [
+-        "tmp=",dataRead("ptr0"),"\n",
+-        dataWrite("ptr0", dataRead("ptr1")),"\n",
+-        dataWrite("ptr1", dataRead("ptr2")),"\n",
+-        dataWrite("ptr2", "tmp")
+-      ].join(""))
+-      code.push("++"+less, "--"+great)
+-    } else {
+-      code.push([
+-        "ptr0=",toPointer(k),"\n",
+-        "ptr1=",toPointer(less),"\n",
+-        "ptr2=",toPointer(great),"\n",
+-        "++",less,"\n",
+-        "--",great,"\n",
+-        "tmp=", dataRead("ptr0"), "\n",
+-        dataWrite("ptr0", dataRead("ptr1")), "\n",
+-        dataWrite("ptr1", dataRead("ptr2")), "\n",
+-        dataWrite("ptr2", "tmp")
+-      ].join(""))
++  if('capSize' in options) {
++    this.capSize = options.capSize
++    if(!Array.isArray(this.capSize)) {
++      this.capSize = [this.capSize, this.capSize, this.capSize]
+     }
+   }
+-  
+-  function swapAndDecrement(k, great) {
+-    swapElements(k, great)
+-    code.push("--"+great)
+-  }
+-    
+-  code.push("if(pivots_are_equal){")
+-    //Pivots are equal case
+-    code.push("for(k=less;k<=great;++k){")
+-      comparePivot("comp", "k", 1)
+-      code.push("if(comp===0){continue}")
+-      code.push("if(comp<0){")
+-        code.push("if(k!==less){")
+-          swapElements("k", "less")
+-        code.push("}")
+-        code.push("++less")
+-      code.push("}else{")
+-        code.push("while(true){")
+-          comparePivot("comp", "great", 1)
+-          code.push("if(comp>0){")
+-            code.push("great--")
+-          code.push("}else if(comp<0){")
+-            tripleSwap("k", "less", "great")
+-            code.push("break")
+-          code.push("}else{")
+-            swapAndDecrement("k", "great")
+-            code.push("break")
+-          code.push("}")
+-        code.push("}")
+-      code.push("}")
+-    code.push("}")
+-  code.push("}else{")
+-    //Pivots not equal case
+-    code.push("for(k=less;k<=great;++k){")
+-      comparePivot("comp_pivot1", "k", 1)
+-      code.push("if(comp_pivot1<0){")
+-        code.push("if(k!==less){")
+-          swapElements("k", "less")
+-        code.push("}")
+-        code.push("++less")
+-      code.push("}else{")
+-        comparePivot("comp_pivot2", "k", 2)
+-        code.push("if(comp_pivot2>0){")
+-          code.push("while(true){")
+-            comparePivot("comp", "great", 2)
+-            code.push("if(comp>0){")
+-              code.push("if(--great<k){break}")
+-              code.push("continue")
+-            code.push("}else{")
+-              comparePivot("comp", "great", 1)
+-              code.push("if(comp<0){")
+-                tripleSwap("k", "less", "great")
+-              code.push("}else{")
+-                swapAndDecrement("k", "great")
+-              code.push("}")
+-              code.push("break")
+-            code.push("}")
+-          code.push("}")
+-        code.push("}")
+-      code.push("}")
+-    code.push("}")
+-  code.push("}")
+-  
+-  //Move pivots to correct place
+-  function storePivot(mem_dest, pivot_dest, pivot) {
+-    if(order.length>1) {
+-      cacheLoop([mem_dest, pivot_dest], true, [
+-        dataWrite("ptr0", dataRead("ptr1")), "\n",
+-        dataWrite("ptr1", ["pivot",pivot,"[pivot_ptr]"].join(""))
+-      ].join(""))
+-    } else {
+-      code.push(
+-          dataWrite(toPointer(mem_dest), dataRead(toPointer(pivot_dest))),
+-          dataWrite(toPointer(pivot_dest), "pivot"+pivot))
+-    }
++  if('opacity' in options) {
++    this.opacity = options.opacity
+   }
+-  
+-  storePivot("left", "(less-1)", 1)
+-  storePivot("right", "(great+1)", 2)
+ 
+-  //Recursive sort call
+-  function doSort(left, right) {
+-    code.push([
+-      "if((",right,"-",left,")<=",INSERTION_SORT_THRESHOLD,"){\n",
+-        "insertionSort(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
+-      "}else{\n",
+-        funcName, "(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
+-      "}"
+-    ].join(""))
++  var color    = options.color || [[0,0,0],[0,0,0],[0,0,0]]
++  var position = options.position
++  var error    = options.error
++  if(!Array.isArray(color[0])) {
++    color = [color,color,color]
+   }
+-  doSort("left", "(less-2)")
+-  doSort("(great+2)", "right")
+-  
+-  //If pivots are equal, then early out
+-  code.push("if(pivots_are_equal){")
+-    cleanUp()
+-    code.push("return")
+-  code.push("}")
+-  
+-  function walkPointer(ptr, pivot, body) {
+-    if(order.length > 1) {
+-      code.push(["__l",++labelCounter,":while(true){"].join(""))
+-      cacheLoop([ptr], true, [
+-        "if(", dataRead("ptr0"), "!==pivot", pivot, "[pivot_ptr]){break __l", labelCounter, "}"
+-      ].join(""))
+-      code.push(body, "}")
+-    } else {
+-      code.push(["while(", dataRead(toPointer(ptr)), "===pivot", pivot, "){", body, "}"].join(""))
++
++  if(position && error) {
++
++    var verts       = []
++    var n           = position.length
++    var vertexCount = 0
++    this.bounds     = [[ Infinity, Infinity, Infinity],
++                       [-Infinity,-Infinity,-Infinity]]
++    this.lineCount  = [0,0,0]
++
++    //Build geometry for lines
++    for(var j=0; j<3; ++j) {
++      this.lineOffset[j] = vertexCount
++
++i_loop:
++      for(var i=0; i<n; ++i) {
++        var p = position[i]
++
++        for(var k=0; k<3; ++k) {
++          if(isNaN(p[k]) || !isFinite(p[k])) {
++            continue i_loop
++          }
++        }
++
++        var e = error[i]
++        var c = color[j]
++        if(Array.isArray(c[0])) {
++          c = color[i]
++        }
++        if(c.length === 3) {
++          c = [c[0], c[1], c[2], 1]
++        }
++        if(isNaN(e[0][j]) || isNaN(e[1][j])) {
++          continue
++        }
++        if(e[0][j] < 0) {
++          var x = p.slice()
++          x[j] += e[0][j]
++          verts.push(p[0], p[1], p[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0,
++                     x[0], x[1], x[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0)
++          updateBounds(this.bounds, x)
++          vertexCount += 2 + emitFace(verts, x, c, j)
++        }
++        if(e[1][j] > 0) {
++          var x = p.slice()
++          x[j] += e[1][j]
++          verts.push(p[0], p[1], p[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0,
++                     x[0], x[1], x[2],
++                     c[0], c[1], c[2], c[3],
++                        0,    0,    0)
++          updateBounds(this.bounds, x)
++          vertexCount += 2 + emitFace(verts, x, c, j)
++        }
++      }
++      this.lineCount[j] = vertexCount - this.lineOffset[j]
+     }
++    this.buffer.update(verts)
+   }
+-  
+-  //Check bounds
+-  code.push("if(less<index1&&great>index5){")
+-  
+-    walkPointer("less", 1, "++less")
+-    walkPointer("great", 2, "--great")
+-  
+-    code.push("for(k=less;k<=great;++k){")
+-      comparePivot("comp_pivot1", "k", 1)
+-      code.push("if(comp_pivot1===0){")
+-        code.push("if(k!==less){")
+-          swapElements("k", "less")
+-        code.push("}")
+-        code.push("++less")
+-      code.push("}else{")
+-        comparePivot("comp_pivot2", "k", 2)
+-        code.push("if(comp_pivot2===0){")
+-          code.push("while(true){")
+-            comparePivot("comp", "great", 2)
+-            code.push("if(comp===0){")
+-              code.push("if(--great<k){break}")
+-              code.push("continue")
+-            code.push("}else{")
+-              comparePivot("comp", "great", 1)
+-              code.push("if(comp<0){")
+-                tripleSwap("k", "less", "great")
+-              code.push("}else{")
+-                swapAndDecrement("k", "great")
+-              code.push("}")
+-              code.push("break")
+-            code.push("}")
+-          code.push("}")
+-        code.push("}")
+-      code.push("}")
+-    code.push("}")
+-  code.push("}")
+-  
+-  //Clean up and do a final sorting pass
+-  cleanUp()
+-  doSort("less", "great")
+- 
+-  //Close off main loop
+-  code.push("}return " + funcName)
+-  
+-  //Compile and link
+-  if(order.length > 1 && allocator) {
+-    var compiled = new Function("insertionSort", "malloc", "free", code.join("\n"))
+-    return compiled(insertionSort, allocator[0], allocator[1])
+-  }
+-  var compiled = new Function("insertionSort", code.join("\n"))
+-  return compiled(insertionSort)
+ }
+ 
+-function compileSort(order, dtype) {
+-  var code = ["'use strict'"]
+-  var funcName = ["ndarraySortWrapper", order.join("d"), dtype].join("")
+-  var funcArgs = [ "array" ]
+-  
+-  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
+-  
+-  //Unpack local variables from array
+-  var vars = ["data=array.data,offset=array.offset|0,shape=array.shape,stride=array.stride"]
+-  for(var i=0; i<order.length; ++i) {
+-    vars.push(["s",i,"=stride[",i,"]|0,n",i,"=shape[",i,"]|0"].join(""))
+-  }
+-  
+-  var scratch_stride = new Array(order.length)
+-  var nprod = []
+-  for(var i=0; i<order.length; ++i) {
+-    var k = order[i]
+-    if(k === 0) {
+-      continue
+-    }
+-    if(nprod.length === 0) {
+-      scratch_stride[k] = "1"
+-    } else {
+-      scratch_stride[k] = nprod.join("*")
+-    }
+-    nprod.push("n"+k)
+-  }
+-  
+-  var p = -1, q = -1
+-  for(var i=0; i<order.length; ++i) {
+-    var j = order[i]
+-    if(j !== 0) {
+-      if(p > 0) {
+-        vars.push(["d",j,"=s",j,"-d",p,"*n",p].join(""))
+-      } else {
+-        vars.push(["d",j,"=s",j].join(""))
++proto.dispose = function() {
++  this.shader.dispose()
++  this.buffer.dispose()
++  this.vao.dispose()
++}
++
++function createErrorBars(options) {
++  var gl = options.gl
++  var buffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++      {
++        buffer: buffer,
++        type:   gl.FLOAT,
++        size:   3,
++        offset: 0,
++        stride: 40
++      },
++      {
++        buffer: buffer,
++        type:   gl.FLOAT,
++        size:   4,
++        offset: 12,
++        stride: 40
++      },
++      {
++        buffer: buffer,
++        type:   gl.FLOAT,
++        size:   3,
++        offset: 28,
++        stride: 40
+       }
+-      p = j
++    ])
++
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location    = 1
++  shader.attributes.offset.location   = 2
++
++  var result = new ErrorBars(gl, buffer, vao, shader)
++  result.update(options)
++  return result
++}
++
++},{"./shaders/index":127,"gl-buffer":121,"gl-vao":206}],127:[function(require,module,exports){
++'use strict'
++
++
++var createShader = require('gl-shader')
++
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, offset;\nattribute vec4 color;\nuniform mat4 model, view, projection;\nuniform float capSize;\nvarying vec4 fragColor;\nvarying vec3 fragPosition;\n\nvoid main() {\n  vec4 worldPosition  = model * vec4(position, 1.0);\n  worldPosition       = (worldPosition / worldPosition.w) + vec4(capSize * offset, 0.0);\n  gl_Position         = projection * view * worldPosition;\n  fragColor           = color;\n  fragPosition        = position;\n}"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\nuniform vec3 clipBounds[2];\nuniform float opacity;\nvarying vec3 fragPosition;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(fragPosition, clipBounds[0])) || any(greaterThan(fragPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = opacity * fragColor;\n}"
++
++module.exports = function(gl) {
++  return createShader(gl, vertSrc, fragSrc, null, [
++    {name: 'position', type: 'vec3'},
++    {name: 'offset', type: 'vec3'},
++    {name: 'color', type: 'vec4'}
++  ])
++}
++
++},{"gl-shader":190}],128:[function(require,module,exports){
++'use strict'
++
++var createTexture = require('gl-texture2d')
++
++module.exports = createFBO
++
++var colorAttachmentArrays = null
++var FRAMEBUFFER_UNSUPPORTED
++var FRAMEBUFFER_INCOMPLETE_ATTACHMENT
++var FRAMEBUFFER_INCOMPLETE_DIMENSIONS
++var FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
++
++function saveFBOState(gl) {
++  var fbo = gl.getParameter(gl.FRAMEBUFFER_BINDING)
++  var rbo = gl.getParameter(gl.RENDERBUFFER_BINDING)
++  var tex = gl.getParameter(gl.TEXTURE_BINDING_2D)
++  return [fbo, rbo, tex]
++}
++
++function restoreFBOState(gl, data) {
++  gl.bindFramebuffer(gl.FRAMEBUFFER, data[0])
++  gl.bindRenderbuffer(gl.RENDERBUFFER, data[1])
++  gl.bindTexture(gl.TEXTURE_2D, data[2])
++}
++
++function lazyInitColorAttachments(gl, ext) {
++  var maxColorAttachments = gl.getParameter(ext.MAX_COLOR_ATTACHMENTS_WEBGL)
++  colorAttachmentArrays = new Array(maxColorAttachments + 1)
++  for(var i=0; i<=maxColorAttachments; ++i) {
++    var x = new Array(maxColorAttachments)
++    for(var j=0; j<i; ++j) {
++      x[j] = gl.COLOR_ATTACHMENT0 + j
+     }
+-    var k = order.length-1-i
+-    if(k !== 0) {
+-      if(q > 0) {
+-        vars.push(["e",k,"=s",k,"-e",q,"*n",q,
+-                  ",f",k,"=",scratch_stride[k],"-f",q,"*n",q].join(""))
+-      } else {
+-        vars.push(["e",k,"=s",k,",f",k,"=",scratch_stride[k]].join(""))
+-      }
+-      q = k
++    for(var j=i; j<maxColorAttachments; ++j) {
++      x[j] = gl.NONE
+     }
++    colorAttachmentArrays[i] = x
+   }
+-  
+-  //Declare local variables
+-  code.push("var " + vars.join(","))
+-  
+-  //Create arguments for subroutine
+-  var sortArgs = ["0", "n0-1", "data", "offset"].concat(shapeArgs(order.length))
+-  
+-  //Call main sorting routine
+-  code.push([
+-    "if(n0<=",INSERTION_SORT_THRESHOLD,"){",
+-      "insertionSort(", sortArgs.join(","), ")}else{",
+-      "quickSort(", sortArgs.join(","),
+-    ")}"
+-  ].join(""))
+-  
+-  //Return
+-  code.push("}return " + funcName)
+-  
+-  //Link everything together
+-  var result = new Function("insertionSort", "quickSort", code.join("\n"))
+-  var insertionSort = createInsertionSort(order, dtype)
+-  var quickSort = createQuickSort(order, dtype, insertionSort)
+-  return result(insertionSort, quickSort)
+ }
+ 
+-module.exports = compileSort
+-},{"typedarray-pool":458}],164:[function(require,module,exports){
+-"use strict"
+-
+-var compile = require("./lib/compile_sort.js")
+-var CACHE = {}
++//Throw an appropriate error
++function throwFBOError(status) {
++  switch(status){
++    case FRAMEBUFFER_UNSUPPORTED:
++      throw new Error('gl-fbo: Framebuffer unsupported')
++    case FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
++      throw new Error('gl-fbo: Framebuffer incomplete attachment')
++    case FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
++      throw new Error('gl-fbo: Framebuffer incomplete dimensions')
++    case FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
++      throw new Error('gl-fbo: Framebuffer incomplete missing attachment')
++    default:
++      throw new Error('gl-fbo: Framebuffer failed for unspecified reason')
++  }
++}
+ 
+-function sort(array) {
+-  var order = array.order
+-  var dtype = array.dtype
+-  var typeSig = [order, dtype ]
+-  var typeName = typeSig.join(":")
+-  var compiled = CACHE[typeName]
+-  if(!compiled) {
+-    CACHE[typeName] = compiled = compile(order, dtype)
++//Initialize a texture object
++function initTexture(gl, width, height, type, format, attachment) {
++  if(!type) {
++    return null
+   }
+-  compiled(array)
+-  return array
++  var result = createTexture(gl, width, height, format, type)
++  result.magFilter = gl.NEAREST
++  result.minFilter = gl.NEAREST
++  result.mipSamples = 1
++  result.bind()
++  gl.framebufferTexture2D(gl.FRAMEBUFFER, attachment, gl.TEXTURE_2D, result.handle, 0)
++  return result
+ }
+ 
+-module.exports = sort
+-},{"./lib/compile_sort.js":163}],165:[function(require,module,exports){
+-'use strict'
++//Initialize a render buffer object
++function initRenderBuffer(gl, width, height, component, attachment) {
++  var result = gl.createRenderbuffer()
++  gl.bindRenderbuffer(gl.RENDERBUFFER, result)
++  gl.renderbufferStorage(gl.RENDERBUFFER, component, width, height)
++  gl.framebufferRenderbuffer(gl.FRAMEBUFFER, attachment, gl.RENDERBUFFER, result)
++  return result
++}
+ 
+-module.exports = createBoxes
++//Rebuild the frame buffer
++function rebuildFBO(fbo) {
+ 
+-var createBuffer = require('gl-buffer')
+-var createShader = require('gl-shader')
++  //Save FBO state
++  var state = saveFBOState(fbo.gl)
+ 
+-var shaders = require('./shaders')
++  var gl = fbo.gl
++  var handle = fbo.handle = gl.createFramebuffer()
++  var width = fbo._shape[0]
++  var height = fbo._shape[1]
++  var numColors = fbo.color.length
++  var ext = fbo._ext
++  var useStencil = fbo._useStencil
++  var useDepth = fbo._useDepth
++  var colorType = fbo._colorType
+ 
+-function Boxes(plot, vbo, shader) {
+-  this.plot   = plot
+-  this.vbo    = vbo
+-  this.shader = shader
+-}
++  //Bind the fbo
++  gl.bindFramebuffer(gl.FRAMEBUFFER, handle)
+ 
+-var proto = Boxes.prototype
++  //Allocate color buffers
++  for(var i=0; i<numColors; ++i) {
++    fbo.color[i] = initTexture(gl, width, height, colorType, gl.RGBA, gl.COLOR_ATTACHMENT0 + i)
++  }
++  if(numColors === 0) {
++    fbo._color_rb = initRenderBuffer(gl, width, height, gl.RGBA4, gl.COLOR_ATTACHMENT0)
++    if(ext) {
++      ext.drawBuffersWEBGL(colorAttachmentArrays[0])
++    }
++  } else if(numColors > 1) {
++    ext.drawBuffersWEBGL(colorAttachmentArrays[numColors])
++  }
+ 
+-proto.bind = function() {
+-  var shader = this.shader
+-  this.vbo.bind()
+-  this.shader.bind()
+-  shader.attributes.coord.pointer()
+-  shader.uniforms.screenBox = this.plot.screenBox
+-}
++  //Allocate depth/stencil buffers
++  var WEBGL_depth_texture = gl.getExtension('WEBGL_depth_texture')
++  if(WEBGL_depth_texture) {
++    if(useStencil) {
++      fbo.depth = initTexture(gl, width, height,
++                          WEBGL_depth_texture.UNSIGNED_INT_24_8_WEBGL,
++                          gl.DEPTH_STENCIL,
++                          gl.DEPTH_STENCIL_ATTACHMENT)
++    } else if(useDepth) {
++      fbo.depth = initTexture(gl, width, height,
++                          gl.UNSIGNED_SHORT,
++                          gl.DEPTH_COMPONENT,
++                          gl.DEPTH_ATTACHMENT)
++    }
++  } else {
++    if(useDepth && useStencil) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_STENCIL, gl.DEPTH_STENCIL_ATTACHMENT)
++    } else if(useDepth) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_COMPONENT16, gl.DEPTH_ATTACHMENT)
++    } else if(useStencil) {
++      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.STENCIL_INDEX, gl.STENCIL_ATTACHMENT)
++    }
++  }
+ 
+-proto.drawBox = (function() {
+-  var lo = [0,0]
+-  var hi = [0,0]
+-  return function(loX, loY, hiX, hiY, color) {
+-    var plot       = this.plot
+-    var shader     = this.shader
+-    var gl         = plot.gl
++  //Check frame buffer state
++  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
++  if(status !== gl.FRAMEBUFFER_COMPLETE) {
+ 
+-    lo[0] = loX
+-    lo[1] = loY
+-    hi[0] = hiX
+-    hi[1] = hiY
++    //Release all partially allocated resources
++    fbo._destroyed = true
+ 
+-    shader.uniforms.lo     = lo
+-    shader.uniforms.hi     = hi
+-    shader.uniforms.color  = color
++    //Release all resources
++    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++    gl.deleteFramebuffer(fbo.handle)
++    fbo.handle = null
++    if(fbo.depth) {
++      fbo.depth.dispose()
++      fbo.depth = null
++    }
++    if(fbo._depth_rb) {
++      gl.deleteRenderbuffer(fbo._depth_rb)
++      fbo._depth_rb = null
++    }
++    for(var i=0; i<fbo.color.length; ++i) {
++      fbo.color[i].dispose()
++      fbo.color[i] = null
++    }
++    if(fbo._color_rb) {
++      gl.deleteRenderbuffer(fbo._color_rb)
++      fbo._color_rb = null
++    }
+ 
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
++    restoreFBOState(gl, state)
++
++    //Throw the frame buffer error
++    throwFBOError(status)
+   }
+-}())
+ 
+-proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
++  //Everything ok, let's get on with life
++  restoreFBOState(gl, state)
+ }
+ 
+-function createBoxes(plot) {
+-  var gl  = plot.gl
+-  var vbo = createBuffer(gl, [
+-    0,0,
+-    0,1,
+-    1,0,
+-    1,1])
+-  var shader  = createShader(gl, shaders.boxVert, shaders.lineFrag)
+-  return new Boxes(plot, vbo, shader)
+-}
++function Framebuffer(gl, width, height, colorType, numColors, useDepth, useStencil, ext) {
+ 
+-},{"./shaders":168,"gl-buffer":124,"gl-shader":203}],166:[function(require,module,exports){
+-'use strict'
++  //Handle and set properties
++  this.gl = gl
++  this._shape = [width|0, height|0]
++  this._destroyed = false
++  this._ext = ext
+ 
+-module.exports = createGrid
++  //Allocate buffers
++  this.color = new Array(numColors)
++  for(var i=0; i<numColors; ++i) {
++    this.color[i] = null
++  }
++  this._color_rb = null
++  this.depth = null
++  this._depth_rb = null
+ 
+-var createBuffer  = require('gl-buffer')
+-var createShader  = require('gl-shader')
+-var bsearch       = require('binary-search-bounds')
+-var shaders       = require('./shaders')
++  //Save depth and stencil flags
++  this._colorType = colorType
++  this._useDepth = useDepth
++  this._useStencil = useStencil
+ 
+-function Grid(plot, vbo, shader, tickShader) {
+-  this.plot   = plot
+-  this.vbo    = vbo
+-  this.shader = shader
+-  this.tickShader = tickShader
+-  this.ticks  = [[], []]
+-}
++  //Shape vector for resizing
++  var parent = this
++  var shapeVector = [width|0, height|0]
++  Object.defineProperties(shapeVector, {
++    0: {
++      get: function() {
++        return parent._shape[0]
++      },
++      set: function(w) {
++        return parent.width = w
++      }
++    },
++    1: {
++      get: function() {
++        return parent._shape[1]
++      },
++      set: function(h) {
++        return parent.height = h
++      }
++    }
++  })
++  this._shapeVector = shapeVector
+ 
+-function compareTickNum(a, b) {
+-  return a - b
++  //Initialize all attachments
++  rebuildFBO(this)
+ }
+ 
+-var proto = Grid.prototype
++var proto = Framebuffer.prototype
+ 
+-proto.draw = (function() {
++function reshapeFBO(fbo, w, h) {
++  //If fbo is invalid, just skip this
++  if(fbo._destroyed) {
++    throw new Error('gl-fbo: Can\'t resize destroyed FBO')
++  }
+ 
+-  var DATA_SHIFT = [0,0]
+-  var DATA_SCALE = [0,0]
+-  var DATA_AXIS  = [0,0]
++  //Don't resize if no change in shape
++  if( (fbo._shape[0] === w) &&
++      (fbo._shape[1] === h) ) {
++    return
++  }
+ 
+-  return function() {
+-    var plot       = this.plot
+-    var vbo        = this.vbo
+-    var shader     = this.shader
+-    var ticks      = this.ticks
+-    var gl         = plot.gl
+-    var bounds     = plot._tickBounds
+-    var dataBox    = plot.dataBox
+-    var viewPixels = plot.viewBox
+-    var lineWidth  = plot.gridLineWidth
+-    var gridColor  = plot.gridLineColor
+-    var gridEnable = plot.gridLineEnable
+-    var pixelRatio = plot.pixelRatio
++  var gl = fbo.gl
+ 
+-    for(var i=0; i<2; ++i) {
+-      var lo = bounds[i]
+-      var hi = bounds[i+2]
+-      var boundScale = hi - lo
+-      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
+-      var dataWidth   = dataBox[i+2] - dataBox[i]
+-      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
+-      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
+-    }
++  //Check parameter ranges
++  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
++  if( w < 0 || w > maxFBOSize ||
++      h < 0 || h > maxFBOSize) {
++    throw new Error('gl-fbo: Can\'t resize FBO, invalid dimensions')
++  }
+ 
+-    shader.bind()
+-    vbo.bind()
+-    shader.attributes.dataCoord.pointer()
+-    shader.uniforms.dataShift = DATA_SHIFT
+-    shader.uniforms.dataScale = DATA_SCALE
++  //Update shape
++  fbo._shape[0] = w
++  fbo._shape[1] = h
+ 
+-    var offset = 0
+-    for(var i=0; i<2; ++i) {
+-      DATA_AXIS[0] = DATA_AXIS[1] = 0
+-      DATA_AXIS[i] = 1
+-      shader.uniforms.dataAxis  = DATA_AXIS
+-      shader.uniforms.lineWidth = lineWidth[i] / (viewPixels[i+2] - viewPixels[i]) * pixelRatio
+-      shader.uniforms.color     = gridColor[i]
++  //Save framebuffer state
++  var state = saveFBOState(gl)
+ 
+-      var size = ticks[i].length * 6
+-      if(gridEnable[i] && size) {
+-        gl.drawArrays(gl.TRIANGLES, offset, size)
+-      }
+-      offset += size
++  //Resize framebuffer attachments
++  for(var i=0; i<fbo.color.length; ++i) {
++    fbo.color[i].shape = fbo._shape
++  }
++  if(fbo._color_rb) {
++    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._color_rb)
++    gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fbo._shape[0], fbo._shape[1])
++  }
++  if(fbo.depth) {
++    fbo.depth.shape = fbo._shape
++  }
++  if(fbo._depth_rb) {
++    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._depth_rb)
++    if(fbo._useDepth && fbo._useStencil) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, fbo._shape[0], fbo._shape[1])
++    } else if(fbo._useDepth) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, fbo._shape[0], fbo._shape[1])
++    } else if(fbo._useStencil) {
++      gl.renderbufferStorage(gl.RENDERBUFFER, gl.STENCIL_INDEX, fbo._shape[0], fbo._shape[1])
+     }
+   }
+-})()
+ 
+-proto.drawTickMarks = (function() {
+-  var DATA_SHIFT = [0,0]
+-  var DATA_SCALE = [0,0]
+-  var X_AXIS     = [1,0]
+-  var Y_AXIS     = [0,1]
+-  var SCR_OFFSET = [0,0]
+-  var TICK_SCALE = [0,0]
++  //Check FBO status after resize, if something broke then die in a fire
++  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo.handle)
++  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
++  if(status !== gl.FRAMEBUFFER_COMPLETE) {
++    fbo.dispose()
++    restoreFBOState(gl, state)
++    throwFBOError(status)
++  }
+ 
+-  return function() {
+-    var plot       = this.plot
+-    var vbo        = this.vbo
+-    var shader     = this.tickShader
+-    var ticks      = this.ticks
+-    var gl         = plot.gl
+-    var bounds     = plot._tickBounds
+-    var dataBox    = plot.dataBox
+-    var viewBox    = plot.viewBox
+-    var pixelRatio = plot.pixelRatio
+-    var screenBox  = plot.screenBox
++  //Restore framebuffer state
++  restoreFBOState(gl, state)
++}
+ 
+-    var screenWidth  = screenBox[2] - screenBox[0]
+-    var screenHeight = screenBox[3] - screenBox[1]
+-    var viewWidth    = viewBox[2]   - viewBox[0]
+-    var viewHeight   = viewBox[3]   - viewBox[1]
++Object.defineProperties(proto, {
++  'shape': {
++    get: function() {
++      if(this._destroyed) {
++        return [0,0]
++      }
++      return this._shapeVector
++    },
++    set: function(x) {
++      if(!Array.isArray(x)) {
++        x = [x|0, x|0]
++      }
++      if(x.length !== 2) {
++        throw new Error('gl-fbo: Shape vector must be length 2')
++      }
+ 
+-    for(var i=0; i<2; ++i) {
+-      var lo = bounds[i]
+-      var hi = bounds[i+2]
+-      var boundScale = hi - lo
+-      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
+-      var dataWidth   = (dataBox[i+2] - dataBox[i])
+-      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
+-      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
+-    }
++      var w = x[0]|0
++      var h = x[1]|0
++      reshapeFBO(this, w, h)
+ 
+-    DATA_SCALE[0] *= viewWidth / screenWidth
+-    DATA_SHIFT[0] *= viewWidth / screenWidth
++      return [w, h]
++    },
++    enumerable: false
++  },
++  'width': {
++    get: function() {
++      if(this._destroyed) {
++        return 0
++      }
++      return this._shape[0]
++    },
++    set: function(w) {
++      w = w|0
++      reshapeFBO(this, w, this._shape[1])
++      return w
++    },
++    enumerable: false
++  },
++  'height': {
++    get: function() {
++      if(this._destroyed) {
++        return 0
++      }
++      return this._shape[1]
++    },
++    set: function(h) {
++      h = h|0
++      reshapeFBO(this, this._shape[0], h)
++      return h
++    },
++    enumerable: false
++  }
++})
+ 
+-    DATA_SCALE[1] *= viewHeight / screenHeight
+-    DATA_SHIFT[1] *= viewHeight / screenHeight
++proto.bind = function() {
++  if(this._destroyed) {
++    return
++  }
++  var gl = this.gl
++  gl.bindFramebuffer(gl.FRAMEBUFFER, this.handle)
++  gl.viewport(0, 0, this._shape[0], this._shape[1])
++}
++
++proto.dispose = function() {
++  if(this._destroyed) {
++    return
++  }
++  this._destroyed = true
++  var gl = this.gl
++  gl.deleteFramebuffer(this.handle)
++  this.handle = null
++  if(this.depth) {
++    this.depth.dispose()
++    this.depth = null
++  }
++  if(this._depth_rb) {
++    gl.deleteRenderbuffer(this._depth_rb)
++    this._depth_rb = null
++  }
++  for(var i=0; i<this.color.length; ++i) {
++    this.color[i].dispose()
++    this.color[i] = null
++  }
++  if(this._color_rb) {
++    gl.deleteRenderbuffer(this._color_rb)
++    this._color_rb = null
++  }
++}
++
++function createFBO(gl, width, height, options) {
++
++  //Update frame buffer error code values
++  if(!FRAMEBUFFER_UNSUPPORTED) {
++    FRAMEBUFFER_UNSUPPORTED = gl.FRAMEBUFFER_UNSUPPORTED
++    FRAMEBUFFER_INCOMPLETE_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT
++    FRAMEBUFFER_INCOMPLETE_DIMENSIONS = gl.FRAMEBUFFER_INCOMPLETE_DIMENSIONS
++    FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
++  }
++
++  //Lazily initialize color attachment arrays
++  var WEBGL_draw_buffers = gl.getExtension('WEBGL_draw_buffers')
++  if(!colorAttachmentArrays && WEBGL_draw_buffers) {
++    lazyInitColorAttachments(gl, WEBGL_draw_buffers)
++  }
+ 
+-    shader.bind()
+-    vbo.bind()
++  //Special case: Can accept an array as argument
++  if(Array.isArray(width)) {
++    options = height
++    height = width[1]|0
++    width = width[0]|0
++  }
+ 
+-    shader.attributes.dataCoord.pointer()
++  if(typeof width !== 'number') {
++    throw new Error('gl-fbo: Missing shape parameter')
++  }
+ 
+-    var uniforms = shader.uniforms
+-    uniforms.dataShift = DATA_SHIFT
+-    uniforms.dataScale = DATA_SCALE
++  //Validate width/height properties
++  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
++  if(width < 0 || width > maxFBOSize || height < 0 || height > maxFBOSize) {
++    throw new Error('gl-fbo: Parameters are too large for FBO')
++  }
+ 
+-    var tickMarkLength = plot.tickMarkLength
+-    var tickMarkWidth  = plot.tickMarkWidth
+-    var tickMarkColor  = plot.tickMarkColor
++  //Handle each option type
++  options = options || {}
+ 
+-    var xTicksOffset = 0
+-    var yTicksOffset = ticks[0].length * 6
++  //Figure out number of color buffers to use
++  var numColors = 1
++  if('color' in options) {
++    numColors = Math.max(options.color|0, 0)
++    if(numColors < 0) {
++      throw new Error('gl-fbo: Must specify a nonnegative number of colors')
++    }
++    if(numColors > 1) {
++      //Check if multiple render targets supported
++      if(!WEBGL_draw_buffers) {
++        throw new Error('gl-fbo: Multiple draw buffer extension not supported')
++      } else if(numColors > gl.getParameter(WEBGL_draw_buffers.MAX_COLOR_ATTACHMENTS_WEBGL)) {
++        throw new Error('gl-fbo: Context does not support ' + numColors + ' draw buffers')
++      }
++    }
++  }
+ 
+-    var xStart = Math.min(bsearch.ge(ticks[0], (dataBox[0] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
+-    var xEnd   = Math.min(bsearch.gt(ticks[0], (dataBox[2] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
+-    var xOffset = xTicksOffset + 6 * xStart
+-    var xCount  = 6 * Math.max(0, xEnd - xStart)
++  //Determine whether to use floating point textures
++  var colorType = gl.UNSIGNED_BYTE
++  var OES_texture_float = gl.getExtension('OES_texture_float')
++  if(options.float && numColors > 0) {
++    if(!OES_texture_float) {
++      throw new Error('gl-fbo: Context does not support floating point textures')
++    }
++    colorType = gl.FLOAT
++  } else if(options.preferFloat && numColors > 0) {
++    if(OES_texture_float) {
++      colorType = gl.FLOAT
++    }
++  }
+ 
+-    var yStart = Math.min(bsearch.ge(ticks[1], (dataBox[1] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
+-    var yEnd   = Math.min(bsearch.gt(ticks[1], (dataBox[3] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
+-    var yOffset = yTicksOffset + 6 * yStart
+-    var yCount  = 6 * Math.max(0, yEnd - yStart)
++  //Check if we should use depth buffer
++  var useDepth = true
++  if('depth' in options) {
++    useDepth = !!options.depth
++  }
+ 
+-    SCR_OFFSET[0]         = 2.0 * (viewBox[0] - tickMarkLength[1]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkLength[1] * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkWidth[1]  * pixelRatio / screenHeight
++  //Check if we should use a stencil buffer
++  var useStencil = false
++  if('stencil' in options) {
++    useStencil = !!options.stencil
++  }
+ 
+-    if(yCount) {
+-      uniforms.color        = tickMarkColor[1]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = Y_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
+-    }
++  return new Framebuffer(
++    gl,
++    width,
++    height,
++    colorType,
++    numColors,
++    useDepth,
++    useStencil,
++    WEBGL_draw_buffers)
++}
+ 
+-    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = 2.0 * (viewBox[1] - tickMarkLength[0]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkWidth[0]  * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkLength[0] * pixelRatio / screenHeight
++},{"gl-texture2d":202}],129:[function(require,module,exports){
+ 
+-    if(xCount) {
+-      uniforms.color        = tickMarkColor[0]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = X_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
+-    }
++var sprintf = require('sprintf-js').sprintf;
++var glConstants = require('gl-constants/lookup');
++var shaderName = require('glsl-shader-name');
++var addLineNumbers = require('add-line-numbers');
+ 
+-    SCR_OFFSET[0]         = 2.0 * (viewBox[2] + tickMarkLength[3]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkLength[3] * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkWidth[3]  * pixelRatio / screenHeight
++module.exports = formatCompilerError;
+ 
+-    if(yCount) {
+-      uniforms.color        = tickMarkColor[3]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = Y_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
+-    }
++function formatCompilerError(errLog, src, type) {
++    "use strict";
+ 
+-    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
+-    SCR_OFFSET[1]         = 2.0 * (viewBox[3] + tickMarkLength[2]) / screenHeight - 1.0
+-    TICK_SCALE[0]         = tickMarkWidth[2]  * pixelRatio / screenWidth
+-    TICK_SCALE[1]         = tickMarkLength[2] * pixelRatio / screenHeight
++    var name = shaderName(src) || 'of unknown name (see npm glsl-shader-name)';
+ 
+-    if(xCount) {
+-      uniforms.color        = tickMarkColor[2]
+-      uniforms.tickScale    = TICK_SCALE
+-      uniforms.dataAxis     = X_AXIS
+-      uniforms.screenOffset = SCR_OFFSET
+-      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
++    var typeName = 'unknown type';
++    if (type !== undefined) {
++        typeName = type === glConstants.FRAGMENT_SHADER ? 'fragment' : 'vertex'
+     }
+-  }
+-})()
+-
+-proto.update = (function() {
+-  var OFFSET_X = [1,  1, -1, -1,  1, -1]
+-  var OFFSET_Y = [1, -1,  1,  1, -1, -1]
+ 
+-  return function(options) {
+-    var ticks  = options.ticks
+-    var bounds = options.bounds
+-    var data   = new Float32Array(6 * 3 * (ticks[0].length + ticks[1].length))
++    var longForm = sprintf('Error compiling %s shader %s:\n', typeName, name);
++    var shortForm = sprintf("%s%s", longForm, errLog);
+ 
+-    var zeroLineEnable = this.plot.zeroLineEnable
++    var errorStrings = errLog.split('\n');
++    var errors = {};
+ 
+-    var ptr    = 0
+-    var gridTicks = [[], []]
+-    for(var dim=0; dim<2; ++dim) {
+-      var localTicks = gridTicks[dim]
+-      var axisTicks = ticks[dim]
+-      var lo = bounds[dim]
+-      var hi = bounds[dim+2]
+-      for(var i=0; i<axisTicks.length; ++i) {
+-        var x = (axisTicks[i].x - lo) / (hi - lo)
+-        localTicks.push(x)
+-        for(var j=0; j<6; ++j) {
+-          data[ptr++] = x
+-          data[ptr++] = OFFSET_X[j]
+-          data[ptr++] = OFFSET_Y[j]
++    for (var i = 0; i < errorStrings.length; i++) {
++        var errorString = errorStrings[i];
++        if (errorString === '') continue;
++        var lineNo = parseInt(errorString.split(':')[2]);
++        if (isNaN(lineNo)) {
++            throw new Error(sprintf('Could not parse error: %s', errorString));
+         }
+-      }
++        errors[lineNo] = errorString;
+     }
+ 
+-    this.ticks = gridTicks
+-    this.vbo.update(data)
+-  }
+-})()
++    var lines = addLineNumbers(src).split('\n');
+ 
+-proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
+-  this.tickShader.dispose()
+-}
++    for (var i = 0; i < lines.length; i++) {
++        if (!errors[i+3] && !errors[i+2] && !errors[i+1]) continue;
++        var line = lines[i];
++        longForm += line + '\n';
++        if (errors[i+1]) {
++            var e = errors[i+1];
++            e = e.substr(e.split(':', 3).join(':').length + 1).trim();
++            longForm += sprintf('^^^ %s\n\n', e);
++        }
++    }
+ 
+-function createGrid(plot) {
+-  var gl     = plot.gl
+-  var vbo    = createBuffer(gl)
+-  var shader = createShader(gl, shaders.gridVert, shaders.gridFrag)
+-  var tickShader = createShader(gl, shaders.tickVert, shaders.gridFrag)
+-  var grid   = new Grid(plot, vbo, shader, tickShader)
+-  return grid
++    return {
++        long: longForm.trim(),
++        short: shortForm.trim()
++    };
+ }
+ 
+-},{"./shaders":168,"binary-search-bounds":170,"gl-buffer":124,"gl-shader":203}],167:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = createLines
++},{"add-line-numbers":24,"gl-constants/lookup":123,"glsl-shader-name":214,"sprintf-js":437}],130:[function(require,module,exports){
+ 
+-var createBuffer = require('gl-buffer')
+-var createShader = require('gl-shader')
+ 
+-var shaders = require('./shaders')
++exports.lineVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\nvoid main() {\n  vec2 dir = (matrix * vec3(d, 0)).xy;\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = 0.5 * width *\n    normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n}\n"
++exports.lineFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}\n"
++exports.mitreVertex   = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 p;\n\nuniform mat3  matrix;\nuniform vec2 screenShape;\nuniform float radius;\n\nvoid main() {\n  vec3 pp = matrix * vec3(p, 1);\n  gl_Position  = vec4(pp.xy, 0, pp.z);\n  gl_PointSize = radius;\n}\n"
++exports.mitreFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}\n"
++exports.pickVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\nattribute vec4 pick0, pick1;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = width *\n    normalize(screenShape.yx * vec2(d.y, -d.x)) / screenShape.xy;\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}\n"
++exports.pickFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}\n"
++exports.fillVertex    = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 projectAxis;\nuniform float projectValue;\nuniform float depth;\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 p = base.xy / base.z;\n  if(d.y < 0.0 || (d.y == 0.0 && d.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}\n"
++exports.fillFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
+ 
+-function Lines(plot, vbo, shader) {
+-  this.plot   = plot
+-  this.vbo    = vbo
+-  this.shader = shader
+-}
++},{}],131:[function(require,module,exports){
++'use strict'
+ 
+-var proto = Lines.prototype
++module.exports = createLinePlot
+ 
+-proto.bind = function() {
+-  var shader = this.shader
+-  this.vbo.bind()
+-  this.shader.bind()
+-  shader.attributes.coord.pointer()
+-  shader.uniforms.screenBox = this.plot.screenBox
+-}
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var createTexture = require('gl-texture2d')
++var ndarray = require('ndarray')
++var pool = require('typedarray-pool')
+ 
+-proto.drawLine = (function() {
+-  var start = [0,0]
+-  var end   = [0,0]
+-  return function(startX, startY, endX, endY, width, color) {
+-    var plot       = this.plot
+-    var shader     = this.shader
+-    var gl         = plot.gl
++var SHADERS = require('./lib/shaders')
+ 
+-    start[0] = startX
+-    start[1] = startY
+-    end[0]   = endX
+-    end[1]   = endY
++function GLLine2D(
++  plot,
++  dashPattern,
++  lineBuffer,
++  pickBuffer,
++  lineShader,
++  mitreShader,
++  fillShader,
++  pickShader) {
+ 
+-    shader.uniforms.start  = start
+-    shader.uniforms.end    = end
+-    shader.uniforms.width  = width * plot.pixelRatio
+-    shader.uniforms.color  = color
++  this.plot         = plot
++  this.dashPattern  = dashPattern
++  this.lineBuffer   = lineBuffer
++  this.pickBuffer   = pickBuffer
++  this.lineShader   = lineShader
++  this.mitreShader  = mitreShader
++  this.fillShader   = fillShader
++  this.pickShader   = pickShader
++  this.usingDashes  = false
+ 
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
+-  }
+-}())
++  this.bounds     = [Infinity, Infinity, -Infinity, -Infinity]
+ 
+-proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
+-}
++  this.width      = 1
++  this.color      = [0,0,1,1]
+ 
+-function createLines(plot) {
+-  var gl  = plot.gl
+-  var vbo = createBuffer(gl, [
+-    -1,-1,
+-    -1,1,
+-    1,-1,
+-    1,1])
+-  var shader  = createShader(gl, shaders.lineVert, shaders.lineFrag)
+-  var lines   = new Lines(plot, vbo, shader)
+-  return lines
+-}
++  //Fill to axes
++  this.fill       = [false, false, false, false]
++  this.fillColor  = [[0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1]]
+ 
+-},{"./shaders":168,"gl-buffer":124,"gl-shader":203}],168:[function(require,module,exports){
+-'use strict'
++  this.data       = null
++  this.numPoints  = 0
++  this.vertCount  = 0
+ 
++  this.pickOffset = 0
+ 
++  this.lodBuffer = []
++}
+ 
+-var FRAGMENT = "precision lowp float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = vec4(color.xyz * color.w, color.w);\n}\n"
++var proto = GLLine2D.prototype
+ 
+-module.exports = {
+-  lineVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 start, end;\nuniform float width;\n\nvec2 perp(vec2 v) {\n  return vec2(v.y, -v.x);\n}\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  vec2 delta = normalize(perp(start - end));\n  vec2 offset = mix(start, end, 0.5 * (coord.y+1.0));\n  gl_Position = vec4(screen(offset + 0.5 * width * delta * coord.x), 0, 1);\n}\n",
+-  lineFrag: FRAGMENT,
+-  textVert: "#define GLSLIFY 1\nattribute vec3 textCoordinate;\n\nuniform vec2 dataScale, dataShift, dataAxis, screenOffset, textScale;\nuniform float angle;\n\nvoid main() {\n  float dataOffset  = textCoordinate.z;\n  vec2 glyphOffset  = textCoordinate.xy;\n  mat2 glyphMatrix = mat2(cos(angle), sin(angle), -sin(angle), cos(angle));\n  vec2 screenCoordinate = dataAxis * (dataScale * dataOffset + dataShift) +\n    glyphMatrix * glyphOffset * textScale + screenOffset;\n  gl_Position = vec4(screenCoordinate, 0, 1);\n}\n",
+-  textFrag: FRAGMENT,
+-  gridVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale;\nuniform float lineWidth;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  pos += 10.0 * dataCoord.y * vec2(dataAxis.y, -dataAxis.x) + dataCoord.z * lineWidth;\n  gl_Position = vec4(pos, 0, 1);\n}\n",
+-  gridFrag: FRAGMENT,
+-  boxVert:  "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 lo, hi;\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  gl_Position = vec4(screen(mix(lo, hi, coord)), 0, 1);\n}\n",
+-  tickVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale, screenOffset, tickScale;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  gl_Position = vec4(pos + tickScale*dataCoord.yz + screenOffset, 0, 1);\n}\n"
+-}
++proto.draw = (function() {
++var MATRIX = [1, 0, 0,
++              0, 1, 0,
++              0, 0, 1]
++var SCREEN_SHAPE = [0,0]
++var PX_AXIS = [1,0]
++var NX_AXIS = [-1,0]
++var PY_AXIS = [0,1]
++var NY_AXIS = [0,-1]
++return function() {
++  var plot      = this.plot
++  var color     = this.color
++  var width     = this.width
++  var numPoints = this.numPoints
++  var bounds    = this.bounds
++  var count     = this.vertCount
+ 
+-},{}],169:[function(require,module,exports){
+-'use strict'
++  if(!count) {
++    return
++  }
+ 
+-module.exports = createTextElements
++  var gl        = plot.gl
++  var viewBox   = plot.viewBox
++  var dataBox   = plot.dataBox
++  var pixelRatio = plot.pixelRatio
+ 
+-var createBuffer = require('gl-buffer')
+-var createShader = require('gl-shader')
+-var getText      = require('text-cache')
+-var bsearch      = require('binary-search-bounds')
+-var shaders      = require('./shaders')
++  var boundX  = bounds[2] - bounds[0]
++  var boundY  = bounds[3] - bounds[1]
++  var dataX   = dataBox[2] - dataBox[0]
++  var dataY   = dataBox[3] - dataBox[1]
++  var screenX = viewBox[2] - viewBox[0]
++  var screenY = viewBox[3] - viewBox[1]
+ 
+-function TextElements(plot, vbo, shader) {
+-  this.plot         = plot
+-  this.vbo          = vbo
+-  this.shader       = shader
+-  this.tickOffset   = [[],[]]
+-  this.tickX        = [[],[]]
+-  this.labelOffset  = [0,0]
+-  this.labelCount   = [0,0]
+-}
++  MATRIX[0] = 2.0 * boundX / dataX
++  MATRIX[4] = 2.0 * boundY / dataY
++  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-var proto = TextElements.prototype
++  SCREEN_SHAPE[0] = screenX
++  SCREEN_SHAPE[1] = screenY
+ 
+-proto.drawTicks = (function() {
+-  var DATA_AXIS = [0,0]
+-  var SCREEN_OFFSET = [0,0]
+-  var ZERO_2 = [0,0]
++  var buffer    = this.lineBuffer
++  buffer.bind()
+ 
+-  return function(axis) {
+-    var plot        = this.plot
+-    var shader      = this.shader
+-    var tickX       = this.tickX[axis]
+-    var tickOffset  = this.tickOffset[axis]
+-    var gl          = plot.gl
+-    var viewBox     = plot.viewBox
+-    var dataBox     = plot.dataBox
+-    var screenBox   = plot.screenBox
+-    var pixelRatio  = plot.pixelRatio
+-    var tickEnable  = plot.tickEnable
+-    var tickPad     = plot.tickPad
+-    var textColor   = plot.tickColor
+-    var textAngle   = plot.tickAngle
+-    var tickLength  = plot.tickMarkLength
++  var fill = this.fill
+ 
+-    var labelEnable = plot.labelEnable
+-    var labelPad    = plot.labelPad
+-    var labelColor  = plot.labelColor
+-    var labelAngle  = plot.labelAngle
+-    var labelOffset = this.labelOffset[axis]
+-    var labelCount  = this.labelCount[axis]
++  if(fill[0] || fill[1] || fill[2] || fill[3]) {
+ 
+-    var start = bsearch.lt(tickX, dataBox[axis])
+-    var end   = bsearch.le(tickX, dataBox[axis+2])
++    var fillShader = this.fillShader
++    fillShader.bind()
+ 
+-    DATA_AXIS[0]    = DATA_AXIS[1] = 0
+-    DATA_AXIS[axis] = 1
++    var fillUniforms = fillShader.uniforms
++    fillUniforms.matrix = MATRIX
++    fillUniforms.depth = plot.nextDepthValue()
+ 
+-    SCREEN_OFFSET[axis] = (viewBox[2+axis] + viewBox[axis]) / (screenBox[2+axis] - screenBox[axis]) - 1.0
++    var fillAttributes = fillShader.attributes
++    fillAttributes.a.pointer(gl.FLOAT, false, 16, 0)
++    fillAttributes.d.pointer(gl.FLOAT, false, 16, 8)
+ 
+-    var screenScale = 2.0 / screenBox[2+(axis^1)] - screenBox[axis^1]
++    gl.depthMask(true)
++    gl.enable(gl.DEPTH_TEST)
+ 
+-    SCREEN_OFFSET[axis^1] = screenScale * viewBox[axis^1] - 1.0
+-    if(tickEnable[axis]) {
+-      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * tickPad[axis]
+-      if(start < end && tickOffset[end] > tickOffset[start]) {
+-        shader.uniforms.dataAxis     = DATA_AXIS
+-        shader.uniforms.screenOffset = SCREEN_OFFSET
+-        shader.uniforms.color        = textColor[axis]
+-        shader.uniforms.angle        = textAngle[axis]
+-        gl.drawArrays(
+-          gl.TRIANGLES,
+-          tickOffset[start],
+-          tickOffset[end] - tickOffset[start])
+-      }
++    var fillColor = this.fillColor
++    if(fill[0]) {
++      fillUniforms.color        = fillColor[0]
++      fillUniforms.projectAxis  = NX_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
+     }
+-    if(labelEnable[axis] && labelCount) {
+-      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * labelPad[axis]
+-      shader.uniforms.dataAxis     = ZERO_2
+-      shader.uniforms.screenOffset = SCREEN_OFFSET
+-      shader.uniforms.color        = labelColor[axis]
+-      shader.uniforms.angle        = labelAngle[axis]
+-      gl.drawArrays(
+-        gl.TRIANGLES,
+-        labelOffset,
+-        labelCount)
++
++    if(fill[1]) {
++      fillUniforms.color        = fillColor[1]
++      fillUniforms.projectAxis  = NY_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
+     }
+ 
+-    SCREEN_OFFSET[axis^1] = screenScale * viewBox[2+(axis^1)] - 1.0
+-    if(tickEnable[axis+2]) {
+-      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * tickPad[axis+2]
+-      if(start < end && tickOffset[end] > tickOffset[start]) {
+-        shader.uniforms.dataAxis     = DATA_AXIS
+-        shader.uniforms.screenOffset = SCREEN_OFFSET
+-        shader.uniforms.color        = textColor[axis+2]
+-        shader.uniforms.angle        = textAngle[axis+2]
+-        gl.drawArrays(
+-          gl.TRIANGLES,
+-          tickOffset[start],
+-          tickOffset[end] - tickOffset[start])
+-      }
++    if(fill[2]) {
++      fillUniforms.color        = fillColor[2]
++      fillUniforms.projectAxis  = PX_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
+     }
+-    if(labelEnable[axis+2] && labelCount) {
+-      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * labelPad[axis+2]
+-      shader.uniforms.dataAxis     = ZERO_2
+-      shader.uniforms.screenOffset = SCREEN_OFFSET
+-      shader.uniforms.color        = labelColor[axis+2]
+-      shader.uniforms.angle        = labelAngle[axis+2]
+-      gl.drawArrays(
+-        gl.TRIANGLES,
+-        labelOffset,
+-        labelCount)
++
++    if(fill[3]) {
++      fillUniforms.color        = fillColor[3]
++      fillUniforms.projectAxis  = PY_AXIS
++      fillUniforms.projectValue = 1
++      gl.drawArrays(gl.TRIANGLES, 0, count)
+     }
+ 
++    gl.depthMask(false)
++    gl.disable(gl.DEPTH_TEST)
++  }
++
++  var shader    = this.lineShader
++  shader.bind()
++
++  var uniforms = shader.uniforms
++  uniforms.matrix = MATRIX
++  uniforms.color  = color
++  uniforms.width  = width * pixelRatio
++  uniforms.screenShape = SCREEN_SHAPE
++  uniforms.dashPattern = this.dashPattern.bind()
++  uniforms.dashLength = this.dashLength * pixelRatio
++
++  var attributes = shader.attributes
++  attributes.a.pointer(gl.FLOAT, false, 16, 0)
++  attributes.d.pointer(gl.FLOAT, false, 16, 8)
++
++  gl.drawArrays(gl.TRIANGLES, 0, count)
++
++  //Draw mitres
++  if(width > 2 && !this.usingDashes) {
++    var mshader = this.mitreShader
++    mshader.bind()
++
++    var muniforms = mshader.uniforms
++    muniforms.matrix = MATRIX
++    muniforms.color  = color
++    muniforms.screenShape = SCREEN_SHAPE
++    muniforms.radius = width * pixelRatio
++
++    mshader.attributes.p.pointer(gl.FLOAT, false, 48, 0)
++    gl.drawArrays(gl.POINTS, 0, (count/3)|0)
+   }
++}
+ })()
+ 
+-proto.drawTitle = (function() {
+-  var DATA_AXIS = [0,0]
+-  var SCREEN_OFFSET = [0,0]
++proto.drawPick = (function() {
++  var MATRIX = [1, 0, 0,
++                0, 1, 0,
++                0, 0, 1]
++  var SCREEN_SHAPE = [0,0]
++  var PICK_OFFSET = [0,0,0,0]
++  return function(pickOffset) {
++    var plot      = this.plot
++    var shader    = this.pickShader
++    var buffer    = this.lineBuffer
++    var pickBuffer= this.pickBuffer
++    var width     = this.width
++    var numPoints = this.numPoints
++    var bounds    = this.bounds
++    var count     = this.vertCount
+ 
+-  return function() {
+-    var plot        = this.plot
+-    var shader      = this.shader
+-    var gl          = plot.gl
+-    var screenBox   = plot.screenBox
+-    var titleCenter = plot.titleCenter
+-    var titleAngle  = plot.titleAngle
+-    var titleColor  = plot.titleColor
+-    var titleCenter = plot.titleCenter
+-    var pixelRatio  = plot.pixelRatio
++    var gl        = plot.gl
++    var viewBox   = plot.viewBox
++    var dataBox   = plot.dataBox
++    var pixelRatio = plot.pickPixelRatio
+ 
+-    if(!this.titleCount) {
+-      return
+-    }
++    var boundX  = bounds[2]  - bounds[0]
++    var boundY  = bounds[3]  - bounds[1]
++    var dataX   = dataBox[2] - dataBox[0]
++    var dataY   = dataBox[3] - dataBox[1]
++    var screenX = viewBox[2] - viewBox[0]
++    var screenY = viewBox[3] - viewBox[1]
+ 
+-    for(var i=0; i<2; ++i) {
+-      SCREEN_OFFSET[i] = 2.0 * (titleCenter[i]*pixelRatio - screenBox[i]) /
+-        (screenBox[2+i] - screenBox[i]) - 1
++    this.pickOffset = pickOffset
++
++    if(!count) {
++      return pickOffset + numPoints
+     }
+ 
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++
++    SCREEN_SHAPE[0] = screenX
++    SCREEN_SHAPE[1] = screenY
++
++    PICK_OFFSET[0] =  pickOffset       & 0xff
++    PICK_OFFSET[1] = (pickOffset>>>8)  & 0xff
++    PICK_OFFSET[2] = (pickOffset>>>16) & 0xff
++    PICK_OFFSET[3] =  pickOffset>>>24
++
+     shader.bind()
+-    shader.uniforms.dataAxis      = DATA_AXIS
+-    shader.uniforms.screenOffset  = SCREEN_OFFSET
+-    shader.uniforms.angle         = titleAngle
+-    shader.uniforms.color         = titleColor
+ 
+-    gl.drawArrays(gl.TRIANGLES, this.titleOffset, this.titleCount)
++    var uniforms = shader.uniforms
++    uniforms.matrix      = MATRIX
++    uniforms.width       = width * pixelRatio
++    uniforms.pickOffset  = PICK_OFFSET
++    uniforms.screenShape = SCREEN_SHAPE
++
++    var attributes = shader.attributes
++
++    buffer.bind()
++    attributes.a.pointer(gl.FLOAT, false, 16, 0)
++    attributes.d.pointer(gl.FLOAT, false, 16, 8)
++
++    pickBuffer.bind()
++    attributes.pick0.pointer(gl.UNSIGNED_BYTE, false, 8, 0)
++    attributes.pick1.pointer(gl.UNSIGNED_BYTE, false, 8, 4)
++
++    gl.drawArrays(gl.TRIANGLES, 0, count)
++
++    return pickOffset + numPoints
+   }
+ })()
+ 
+-proto.bind = (function() {
+-  var DATA_SHIFT = [0,0]
+-  var DATA_SCALE = [0,0]
+-  var TEXT_SCALE = [0,0]
++proto.pick = function(x, y, value) {
++  var pickOffset = this.pickOffset
++  var pointCount = this.numPoints
++  if(value < pickOffset || value >= pickOffset + pointCount) {
++    return null
++  }
++  var pointId = value - pickOffset
++  var points = this.data
++  return {
++    object:    this,
++    pointId:   pointId,
++    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
++  }
++}
+ 
+-  return function() {
+-    var plot      = this.plot
+-    var shader    = this.shader
+-    var bounds    = plot._tickBounds
+-    var dataBox   = plot.dataBox
+-    var screenBox = plot.screenBox
+-    var viewBox   = plot.viewBox
++function deepCopy(arr) {
++  return arr.map(function(x) {
++    return x.slice()
++  })
++}
+ 
+-    shader.bind()
++proto.update = function(options) {
++  options = options || {}
+ 
+-    //Set up coordinate scaling uniforms
+-    for(var i=0; i<2; ++i) {
++  var gl = this.plot.gl
+ 
+-      var lo = bounds[i]
+-      var hi = bounds[i+2]
+-      var boundScale = hi - lo
+-      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
+-      var dataWidth   = (dataBox[i+2] - dataBox[i])
++  var connectGaps = !!options.connectGaps
+ 
+-      var viewLo = viewBox[i]
+-      var viewHi = viewBox[i+2]
+-      var viewScale = viewHi - viewLo
+-      var screenLo = screenBox[i]
+-      var screenHi = screenBox[i+2]
+-      var screenScale = screenHi - screenLo
++  this.color = (options.color || [0,0,1,1]).slice()
++  this.width = +(options.width || 1)
+ 
+-      DATA_SCALE[i] = 2.0 * boundScale / dataWidth * viewScale / screenScale
+-      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth * viewScale / screenScale
++  this.fill      = (options.fill || [false,false,false,false]).slice()
++  this.fillColor = deepCopy(options.fillColor || [[0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1],
++                     [0,0,0,1]])
++
++  var dashes = options.dashes || [1]
++  var dashLength = 0
++  for(var i=0; i<dashes.length; ++i) {
++    dashLength += dashes[i]
++  }
++  var dashData = pool.mallocUint8(dashLength)
++  var ptr = 0
++  var fillColor = 255
++  for(var i=0; i<dashes.length; ++i) {
++    for(var j=0; j<dashes[i]; ++j) {
++      dashData[ptr++] = fillColor
+     }
++    fillColor ^= 255
++  }
++  this.dashPattern.dispose()
++  this.usingDashes = dashes.length > 1
+ 
+-    TEXT_SCALE[1] = 2.0 * plot.pixelRatio / (screenBox[3] - screenBox[1])
+-    TEXT_SCALE[0] = TEXT_SCALE[1] * (screenBox[3] - screenBox[1]) / (screenBox[2] - screenBox[0])
++  this.dashPattern = createTexture(gl,
++    ndarray(dashData, [dashLength, 1, 4], [1, 0, 0]))
++  this.dashPattern.minFilter = gl.NEAREST
++  this.dashPattern.magFilter = gl.NEAREST
++  this.dashLength = dashLength
++  pool.free(dashData)
+ 
+-    shader.uniforms.dataScale = DATA_SCALE
+-    shader.uniforms.dataShift = DATA_SHIFT
+-    shader.uniforms.textScale = TEXT_SCALE
++  var data = options.positions
++  this.data = data
+ 
+-    //Set attributes
+-    this.vbo.bind()
+-    shader.attributes.textCoordinate.pointer()
++  var bounds = this.bounds
++  bounds[0] = bounds[1] = Infinity
++  bounds[2] = bounds[3] = -Infinity
++
++  var numPoints = this.numPoints = data.length>>>1
++  if(numPoints === 0) {
++    return
+   }
+-})()
+ 
+-proto.update = function(options) {
+-  var vertices  = []
+-  var axesTicks = options.ticks
+-  var bounds    = options.bounds
++  for(var i=0; i<numPoints; ++i) {
++    var ax = data[2*i]
++    var ay = data[2*i+1]
+ 
+-  for(var dimension=0; dimension<2; ++dimension) {
+-    var offsets = [Math.floor(vertices.length/3)], tickX = [-Infinity]
++    if (isNaN(ax) || isNaN(ay)) {
++      continue
++    }
+ 
+-    //Copy vertices over to buffer
+-    var ticks = axesTicks[dimension]
+-    for(var i=0; i<ticks.length; ++i) {
+-      var tick  = ticks[i]
+-      var x     = tick.x
+-      var text  = tick.text
+-      var font  = tick.font || 'sans-serif'
+-      var scale = (tick.fontSize || 12)
++    bounds[0] = Math.min(bounds[0], ax)
++    bounds[1] = Math.min(bounds[1], ay)
++    bounds[2] = Math.max(bounds[2], ax)
++    bounds[3] = Math.max(bounds[3], ay)
++  }
+ 
+-      var data = getText(font, text).data
++  if(bounds[0] === bounds[2]) {
++    bounds[2] += 1
++  }
++  if(bounds[3] === bounds[1]) {
++    bounds[3] += 1
++  }
+ 
+-      var coordScale = 1.0 / (bounds[dimension+2] - bounds[dimension])
+-      var coordShift = bounds[dimension]
++  //Generate line data
++  var lineData    = pool.mallocFloat32(24*(numPoints-1))
++  var pickData    = pool.mallocUint32(12*(numPoints-1))
++  var lineDataPtr = lineData.length
++  var pickDataPtr = pickData.length
++  var ptr = numPoints
+ 
+-      for(var j=0; j<data.length; j+=2) {
+-        vertices.push(
+-           data[j]  *scale,
+-          -data[j+1]*scale,
+-          (x - coordShift) * coordScale)
+-      }
++  var count = 0
+ 
+-      offsets.push(Math.floor(vertices.length/3))
+-      tickX.push(x)
++  while(ptr > 1) {
++    var id = --ptr
++    var ax = data[2*ptr]
++    var ay = data[2*ptr+1]
++
++    var next = id-1
++    var bx = data[2*next]
++    var by = data[2*next+1]
++
++    if (isNaN(ax) || isNaN(ay) || isNaN(bx) || isNaN(by)) {
++      continue
+     }
+ 
+-    this.tickOffset[dimension] = offsets
+-    this.tickX[dimension] = tickX
+-  }
++    count += 1
+ 
+-  //Add labels
+-  for(var dimension=0; dimension<2; ++dimension) {
+-    this.labelOffset[dimension] = Math.floor(vertices.length/3)
++    ax = (ax - bounds[0]) / (bounds[2] - bounds[0])
++    ay = (ay - bounds[1]) / (bounds[3] - bounds[1])
+ 
+-    var data  = getText(options.labelFont[dimension], options.labels[dimension]).data
+-    var scale = options.labelSize[dimension]
+-    for(var i=0; i<data.length; i+=2) {
+-      vertices.push(data[i]*scale, -data[i+1]*scale, 0)
+-    }
++    bx = (bx - bounds[0]) / (bounds[2] - bounds[0])
++    by = (by - bounds[1]) / (bounds[3] - bounds[1])
+ 
+-    this.labelCount[dimension] =
+-      Math.floor(vertices.length/3) - this.labelOffset[dimension]
+-  }
++    var dx = bx - ax
++    var dy = by - ay
+ 
+-  //Add title
+-  this.titleOffset = Math.floor(vertices.length/3)
+-  var data = getText(options.titleFont, options.title).data
+-  var scale = options.titleSize
+-  for(var i=0; i<data.length; i+=2) {
+-    vertices.push(data[i]*scale, -data[i+1]*scale, 0)
++    var akey0 = id     | (1<<24)
++    var akey1 = (id-1)
++    var bkey0 = id
++    var bkey1 = (id-1) | (1<<24)
++
++    lineData[--lineDataPtr] = -dy
++    lineData[--lineDataPtr] = -dx
++    lineData[--lineDataPtr] = ay
++    lineData[--lineDataPtr] = ax
++    pickData[--pickDataPtr] = akey0
++    pickData[--pickDataPtr] = akey1
++
++    lineData[--lineDataPtr] = dy
++    lineData[--lineDataPtr] = dx
++    lineData[--lineDataPtr] = by
++    lineData[--lineDataPtr] = bx
++    pickData[--pickDataPtr] = bkey0
++    pickData[--pickDataPtr] = bkey1
++
++    lineData[--lineDataPtr] = -dy
++    lineData[--lineDataPtr] = -dx
++    lineData[--lineDataPtr] = by
++    lineData[--lineDataPtr] = bx
++    pickData[--pickDataPtr] = bkey0
++    pickData[--pickDataPtr] = bkey1
++
++    lineData[--lineDataPtr] = dy
++    lineData[--lineDataPtr] = dx
++    lineData[--lineDataPtr] = by
++    lineData[--lineDataPtr] = bx
++    pickData[--pickDataPtr] = bkey0
++    pickData[--pickDataPtr] = bkey1
++
++    lineData[--lineDataPtr] = -dy
++    lineData[--lineDataPtr] = -dx
++    lineData[--lineDataPtr] = ay
++    lineData[--lineDataPtr] = ax
++    pickData[--pickDataPtr] = akey0
++    pickData[--pickDataPtr] = akey1
++
++    lineData[--lineDataPtr] = dy
++    lineData[--lineDataPtr] = dx
++    lineData[--lineDataPtr] = ay
++    lineData[--lineDataPtr] = ax
++    pickData[--pickDataPtr] = akey0
++    pickData[--pickDataPtr] = akey1
+   }
+-  this.titleCount = Math.floor(vertices.length/3) - this.titleOffset
+ 
+-  //Upload new vertices
+-  this.vbo.update(vertices)
++  this.vertCount = 6 * count
++  this.lineBuffer.update(lineData.subarray(lineDataPtr))
++  this.pickBuffer.update(pickData.subarray(pickDataPtr))
++
++  pool.free(lineData)
++  pool.free(pickData)
+ }
+ 
+ proto.dispose = function() {
+-  this.vbo.dispose()
+-  this.shader.dispose()
++  this.plot.removeObject(this)
++  this.lineBuffer.dispose()
++  this.pickBuffer.dispose()
++  this.lineShader.dispose()
++  this.mitreShader.dispose()
++  this.fillShader.dispose()
++  this.pickShader.dispose()
++  this.dashPattern.dispose()
+ }
+ 
+-function createTextElements(plot) {
++function createLinePlot(plot, options) {
+   var gl = plot.gl
+-  var vbo = createBuffer(gl)
+-  var shader = createShader(gl, shaders.textVert, shaders.textFrag)
+-  var text = new TextElements(plot, vbo, shader)
+-  return text
++  var lineBuffer  = createBuffer(gl)
++  var pickBuffer  = createBuffer(gl)
++  var dashPattern = createTexture(gl, [1,1])
++  var lineShader  = createShader(gl, SHADERS.lineVertex,  SHADERS.lineFragment)
++  var mitreShader = createShader(gl, SHADERS.mitreVertex, SHADERS.mitreFragment)
++  var fillShader  = createShader(gl, SHADERS.fillVertex,  SHADERS.fillFragment)
++  var pickShader  = createShader(gl, SHADERS.pickVertex,  SHADERS.pickFragment)
++  var linePlot    = new GLLine2D(
++    plot,
++    dashPattern,
++    lineBuffer,
++    pickBuffer,
++    lineShader,
++    mitreShader,
++    fillShader,
++    pickShader)
++  plot.addObject(linePlot)
++  linePlot.update(options)
++  return linePlot
+ }
+ 
+-},{"./shaders":168,"binary-search-bounds":170,"gl-buffer":124,"gl-shader":203,"text-cache":453}],170:[function(require,module,exports){
+-arguments[4][68][0].apply(exports,arguments)
+-},{"dup":68}],171:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = createGLPlot2D
++},{"./lib/shaders":130,"gl-buffer":121,"gl-shader":190,"gl-texture2d":202,"ndarray":385,"typedarray-pool":449}],132:[function(require,module,exports){
+ 
+-var createPick = require('gl-select-static')
++var createShader  = require('gl-shader')
+ 
+-var createGrid = require('./lib/grid')
+-var createText = require('./lib/text')
+-var createLine = require('./lib/line')
+-var createBox  = require('./lib/box')
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, nextPosition;\nattribute float arcLength, lineWidth;\nattribute vec4 color;\n\nuniform vec2 screenShape;\nuniform float pixelRatio;\nuniform mat4 model, view, projection;\n\nvarying vec4 fragColor;\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\n\nvoid main() {\n  vec4 projected = projection * view * model * vec4(position, 1.0);\n  vec4 tangentClip = projection * view * model * vec4(nextPosition - position, 0.0);\n  vec2 tangent = normalize(screenShape * tangentClip.xy);\n  vec2 offset = 0.5 * pixelRatio * lineWidth * vec2(tangent.y, -tangent.x) / screenShape;\n\n  gl_Position = vec4(projected.xy + projected.w * offset, projected.zw);\n\n  worldPosition = position;\n  pixelArcLength = arcLength;\n  fragColor = color;\n}\n"
++var forwardFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3      clipBounds[2];\nuniform sampler2D dashTexture;\nuniform float     dashScale;\nuniform float     opacity;\n\nvarying vec3    worldPosition;\nvarying float   pixelArcLength;\nvarying vec4    fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  float dashWeight = texture2D(dashTexture, vec2(dashScale * pixelArcLength, 0)).r;\n  if(dashWeight < 0.5) {\n    discard;\n  }\n  gl_FragColor = fragColor * opacity;\n}\n"
++var pickFrag = "precision mediump float;\n#define GLSLIFY 1\n\n#define FLOAT_MAX  1.70141184e38\n#define FLOAT_MIN  1.17549435e-38\n\nlowp vec4 encode_float_1_0(highp float v) {\n  highp float av = abs(v);\n\n  //Handle special cases\n  if(av < FLOAT_MIN) {\n    return vec4(0.0, 0.0, 0.0, 0.0);\n  } else if(v > FLOAT_MAX) {\n    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;\n  } else if(v < -FLOAT_MAX) {\n    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;\n  }\n\n  highp vec4 c = vec4(0,0,0,0);\n\n  //Compute exponent and mantissa\n  highp float e = floor(log2(av));\n  highp float m = av * pow(2.0, -e) - 1.0;\n  \n  //Unpack mantissa\n  c[1] = floor(128.0 * m);\n  m -= c[1] / 128.0;\n  c[2] = floor(32768.0 * m);\n  m -= c[2] / 32768.0;\n  c[3] = floor(8388608.0 * m);\n  \n  //Unpack exponent\n  highp float ebias = e + 127.0;\n  c[0] = floor(ebias / 2.0);\n  ebias -= c[0] * 2.0;\n  c[1] += floor(ebias) * 128.0; \n\n  //Unpack sign bit\n  c[0] += 128.0 * step(0.0, -v);\n\n  //Scale back to range\n  return c / 255.0;\n}\n\n\n\nuniform float pickId;\nuniform vec3 clipBounds[2];\n\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId/255.0, encode_float_1_0(pixelArcLength).xyz);\n}"
+ 
+-function GLPlot2D(gl, pickBuffer) {
+-  this.gl               = gl
+-  this.pickBuffer       = pickBuffer
++var ATTRIBUTES = [
++  {name: 'position', type: 'vec3'},
++  {name: 'nextPosition', type: 'vec3'},
++  {name: 'arcLength', type: 'float'},
++  {name: 'lineWidth', type: 'float'},
++  {name: 'color', type: 'vec4'}
++]
+ 
+-  this.screenBox        = [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight]
+-  this.viewBox          = [0, 0, 0, 0]
+-  this.dataBox          = [-10, -10, 10, 10]
++exports.createShader = function(gl) {
++  return createShader(gl, vertSrc, forwardFrag, null, ATTRIBUTES)
++}
+ 
+-  this.gridLineEnable   = [true,true]
+-  this.gridLineWidth    = [1,1]
+-  this.gridLineColor    = [[0,0,0,1],
+-                           [0,0,0,1]]
++exports.createPickShader = function(gl) {
++  return createShader(gl, vertSrc, pickFrag, null, ATTRIBUTES)
++}
+ 
+-  this.pixelRatio       = 1
++},{"gl-shader":190}],133:[function(require,module,exports){
++'use strict'
+ 
+-  this.tickMarkLength   = [0,0,0,0]
+-  this.tickMarkWidth    = [0,0,0,0]
+-  this.tickMarkColor    = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++module.exports = createLinePlot
+ 
+-  this.tickPad          = [15,15,15,15]
+-  this.tickAngle        = [0,0,0,0]
+-  this.tickEnable       = [true,true,true,true]
+-  this.tickColor        = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++var createBuffer = require('gl-buffer')
++var createVAO = require('gl-vao')
++var createTexture = require('gl-texture2d')
++var unpackFloat = require('glsl-read-float')
++var bsearch = require('binary-search-bounds')
++var ndarray = require('ndarray')
++var shaders = require('./lib/shaders')
+ 
+-  this.labelPad         = [15,15,15,15]
+-  this.labelAngle       = [0,Math.PI/2,0,3.0*Math.PI/2]
+-  this.labelEnable      = [true,true,true,true]
+-  this.labelColor       = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++var createShader = shaders.createShader
++var createPickShader = shaders.createPickShader
+ 
+-  this.titleCenter      = [0,0]
+-  this.titleEnable      = true
+-  this.titleAngle       = 0
+-  this.titleColor       = [0,0,0,1]
++var identity = [1, 0, 0, 0,
++  0, 1, 0, 0,
++  0, 0, 1, 0,
++  0, 0, 0, 1]
+ 
+-  this.borderColor      = [0,0,0,0]
+-  this.backgroundColor  = [0,0,0,0]
++function distance (a, b) {
++  var s = 0.0
++  for (var i = 0; i < 3; ++i) {
++    var d = a[i] - b[i]
++    s += d * d
++  }
++  return Math.sqrt(s)
++}
+ 
+-  this.zeroLineEnable   = [true, true]
+-  this.zeroLineWidth    = [4, 4]
+-  this.zeroLineColor    = [[0, 0, 0, 1],[0, 0, 0, 1]]
++function filterClipBounds (bounds) {
++  var result = [[-1e6, -1e6, -1e6], [1e6, 1e6, 1e6]]
++  for (var i = 0; i < 3; ++i) {
++    result[0][i] = Math.max(bounds[0][i], result[0][i])
++    result[1][i] = Math.min(bounds[1][i], result[1][i])
++  }
++  return result
++}
+ 
+-  this.borderLineEnable = [true,true,true,true]
+-  this.borderLineWidth  = [2,2,2,2]
+-  this.borderLineColor  = [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]]
++function PickResult (tau, position, index, dataCoordinate) {
++  this.arcLength = tau
++  this.position = position
++  this.index = index
++  this.dataCoordinate = dataCoordinate
++}
+ 
+-  //Drawing parameters
+-  this.grid             = null
+-  this.text             = null
+-  this.line             = null
+-  this.box              = null
+-  this.objects          = []
+-  this.overlays         = []
++function LinePlot (gl, shader, pickShader, buffer, vao, texture) {
++  this.gl = gl
++  this.shader = shader
++  this.pickShader = pickShader
++  this.buffer = buffer
++  this.vao = vao
++  this.clipBounds = [
++    [ -Infinity, -Infinity, -Infinity ],
++    [ Infinity, Infinity, Infinity ]]
++  this.points = []
++  this.arcLength = []
++  this.vertexCount = 0
++  this.bounds = [[0, 0, 0], [0, 0, 0]]
++  this.pickId = 0
++  this.lineWidth = 1
++  this.texture = texture
++  this.dashScale = 1
++  this.opacity = 1
++  this.dirty = true
++  this.pixelRatio = 1
++}
+ 
+-  this._tickBounds      = [Infinity, Infinity, -Infinity, -Infinity]
++var proto = LinePlot.prototype
+ 
+-  this.dirty        = false
+-  this.pickDirty    = false
+-  this.pickDelay    = 120
+-  this.pickRadius   = 10
+-  this._pickTimeout = null
+-  this._drawPick    = this.drawPick.bind(this)
++proto.isTransparent = function () {
++  return this.opacity < 1
++}
+ 
+-  this._depthCounter = 0
++proto.isOpaque = function () {
++  return this.opacity >= 1
+ }
+ 
+-var proto = GLPlot2D.prototype
++proto.pickSlots = 1
+ 
+-proto.setDirty = function() {
+-  this.dirty = this.pickDirty = true
++proto.setPickBase = function (id) {
++  this.pickId = id
+ }
+ 
+-proto.setOverlayDirty = function() {
+-  this.dirty = true
++proto.drawTransparent = proto.draw = function (camera) {
++  var gl = this.gl
++  var shader = this.shader
++  var vao = this.vao
++  shader.bind()
++  shader.uniforms = {
++    model: camera.model || identity,
++    view: camera.view || identity,
++    projection: camera.projection || identity,
++    clipBounds: filterClipBounds(this.clipBounds),
++    dashTexture: this.texture.bind(),
++    dashScale: this.dashScale / this.arcLength[this.arcLength.length - 1],
++    opacity: this.opacity,
++    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
++    pixelRatio: this.pixelRatio
++  }
++  vao.bind()
++  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
+ }
+ 
+-proto.nextDepthValue = function() {
+-  return (this._depthCounter++) / 65536.0
++proto.drawPick = function (camera) {
++  var gl = this.gl
++  var shader = this.pickShader
++  var vao = this.vao
++  shader.bind()
++  shader.uniforms = {
++    model: camera.model || identity,
++    view: camera.view || identity,
++    projection: camera.projection || identity,
++    pickId: this.pickId,
++    clipBounds: filterClipBounds(this.clipBounds),
++    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
++    pixelRatio: this.pixelRatio
++  }
++  vao.bind()
++  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
+ }
+ 
+-function lerp(a, b, t) {
+-  var s = 0.5 * (t + 1.0)
+-  return Math.floor((1.0-s)*a + s*b)|0
+-}
++proto.update = function (options) {
++  var i, j
+ 
+-proto.draw = (function() {
+-var TICK_MARK_BOX = [0,0,0,0]
+-return function() {
+-  var gl         = this.gl
+-  var screenBox  = this.screenBox
+-  var viewPixels = this.viewBox
+-  var dataBox    = this.dataBox
+-  var pixelRatio = this.pixelRatio
+-  var grid       = this.grid
+-  var line       = this.line
+-  var text       = this.text
+-  var objects    = this.objects
++  this.dirty = true
+ 
+-  this._depthCounter = 0
++  var connectGaps = !!options.connectGaps
+ 
+-  if(this.pickDirty) {
+-    if(this._pickTimeout) {
+-      clearTimeout(this._pickTimeout)
+-    }
+-    this.pickDirty = false
+-    this._pickTimeout = setTimeout(this._drawPick, this.pickDelay)
++  if ('dashScale' in options) {
++    this.dashScale = options.dashScale
++  }
++  if ('opacity' in options) {
++    this.opacity = +options.opacity
+   }
+ 
+-  if(!this.dirty) {
++  var positions = options.position || options.positions
++  if (!positions) {
+     return
+   }
+-  this.dirty = false
+ 
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++  // Default color
++  var colors = options.color || options.colors || [0, 0, 0, 1]
+ 
+-  //Turn on scissor
+-  gl.enable(gl.SCISSOR_TEST)
++  var lineWidth = options.lineWidth || 1
+ 
+-  //Turn off depth buffer
+-  gl.disable(gl.DEPTH_TEST)
+-  gl.depthFunc(gl.LESS)
+-  gl.depthMask(false)
++  // Recalculate buffer data
++  var buffer = []
++  var arcLengthArray = []
++  var pointArray = []
++  var arcLength = 0.0
++  var vertexCount = 0
++  var bounds = [
++    [ Infinity, Infinity, Infinity ],
++    [ -Infinity, -Infinity, -Infinity ]]
++  var hadGap = false
+ 
+-  //Configure premultiplied alpha blending
+-  gl.enable(gl.BLEND)
+-  gl.blendEquation(gl.FUNC_ADD, gl.FUNC_ADD);
+-  gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
++  fill_loop:
++  for (i = 1; i < positions.length; ++i) {
++    var a = positions[i - 1]
++    var b = positions[i]
+ 
+-  //Draw border
+-  gl.scissor(
+-    screenBox[0],
+-    screenBox[1],
+-    screenBox[2]-screenBox[0],
+-    screenBox[3]-screenBox[1])
+-  var borderColor = this.borderColor
+-  gl.clearColor(
+-    borderColor[0]*borderColor[3],
+-    borderColor[1]*borderColor[3],
+-    borderColor[2]*borderColor[3],
+-    borderColor[3])
+-  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
++    arcLengthArray.push(arcLength)
++    pointArray.push(a.slice())
+ 
+-  //Draw center pane
+-  gl.scissor(
+-    viewPixels[0],
+-    viewPixels[1],
+-    viewPixels[2]-viewPixels[0],
+-    viewPixels[3]-viewPixels[1])
+-  gl.viewport(
+-    viewPixels[0],
+-    viewPixels[1],
+-    viewPixels[2]-viewPixels[0],
+-    viewPixels[3]-viewPixels[1])
+-  var backgroundColor = this.backgroundColor
+-  gl.clearColor(
+-    backgroundColor[0]*backgroundColor[3],
+-    backgroundColor[1]*backgroundColor[3],
+-    backgroundColor[2]*backgroundColor[3],
+-    backgroundColor[3])
+-  gl.clear(gl.COLOR_BUFFER_BIT)
++    for (j = 0; j < 3; ++j) {
++      if (isNaN(a[j]) || isNaN(b[j]) ||
++        !isFinite(a[j]) || !isFinite(b[j])) {
+ 
+-  //Draw grid
+-  grid.draw()
++        if (!connectGaps && buffer.length > 0) {
++          for (var k = 0; k < 24; ++k) {
++            buffer.push(buffer[buffer.length - 12])
++          }
++          vertexCount += 2
++          hadGap = true
++        }
+ 
+-  //Draw zero lines separately
+-  var zeroLineEnable = this.zeroLineEnable
+-  var zeroLineColor  = this.zeroLineColor
+-  var zeroLineWidth  = this.zeroLineWidth
+-  if(zeroLineEnable[0] || zeroLineEnable[1]) {
+-    line.bind()
+-    for(var i=0; i<2; ++i) {
+-      if(!zeroLineEnable[i] ||
+-        !(dataBox[i] <= 0 && dataBox[i+2] >= 0)) {
+-        continue
++        continue fill_loop
+       }
++      bounds[0][j] = Math.min(bounds[0][j], a[j], b[j])
++      bounds[1][j] = Math.max(bounds[1][j], a[j], b[j])
++    }
+ 
+-      var zeroIntercept = screenBox[i] -
+-        dataBox[i] * (screenBox[i+2] - screenBox[i]) / (dataBox[i+2] - dataBox[i])
+-
+-      if(i === 0) {
+-        line.drawLine(
+-          zeroIntercept, screenBox[1], zeroIntercept, screenBox[3],
+-          zeroLineWidth[i],
+-          zeroLineColor[i])
+-      } else {
+-        line.drawLine(
+-          screenBox[0], zeroIntercept, screenBox[2], zeroIntercept,
+-          zeroLineWidth[i],
+-          zeroLineColor[i])
+-      }
++    var acolor, bcolor
++    if (Array.isArray(colors[0])) {
++      acolor = colors[i - 1]
++      bcolor = colors[i]
++    } else {
++      acolor = bcolor = colors
++    }
++    if (acolor.length === 3) {
++      acolor = [acolor[0], acolor[1], acolor[2], 1]
++    }
++    if (bcolor.length === 3) {
++      bcolor = [bcolor[0], bcolor[1], bcolor[2], 1]
+     }
+-  }
+ 
+-  //Draw traces
+-  for(var i=0; i<objects.length; ++i) {
+-    objects[i].draw()
+-  }
++    var w0
++    if (Array.isArray(lineWidth)) {
++      w0 = lineWidth[i - 1]
++    } else {
++      w0 = lineWidth
++    }
+ 
+-  //Return viewport to default
+-  gl.viewport(
+-    screenBox[0],
+-    screenBox[1],
+-    screenBox[2]-screenBox[0],
+-    screenBox[3]-screenBox[1])
+-  gl.scissor(
+-    screenBox[0],
+-    screenBox[1],
+-    screenBox[2]-screenBox[0],
+-    screenBox[3]-screenBox[1])
++    var t0 = arcLength
++    arcLength += distance(a, b)
+ 
+-  //Draw tick marks
+-  this.grid.drawTickMarks()
++    if (hadGap) {
++      for (j = 0; j < 2; ++j) {
++        buffer.push(
++          a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3])
++      }
++      vertexCount += 2
++      hadGap = false
++    }
+ 
+-  //Draw line elements
+-  line.bind()
++    buffer.push(
++      a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3],
++      a[0], a[1], a[2], b[0], b[1], b[2], t0, -w0, acolor[0], acolor[1], acolor[2], acolor[3],
++      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, -w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3],
++      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3])
+ 
+-  //Draw border lines
+-  var borderLineEnable = this.borderLineEnable
+-  var borderLineWidth  = this.borderLineWidth
+-  var borderLineColor  = this.borderLineColor
+-  if(borderLineEnable[1]) {
+-    line.drawLine(
+-      viewPixels[0], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
+-      viewPixels[0], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
+-      borderLineWidth[1], borderLineColor[1])
+-  }
+-  if(borderLineEnable[0]) {
+-    line.drawLine(
+-      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[1],
+-      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[1],
+-      borderLineWidth[0], borderLineColor[0])
+-  }
+-  if(borderLineEnable[3]) {
+-    line.drawLine(
+-      viewPixels[2], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
+-      viewPixels[2], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
+-      borderLineWidth[3], borderLineColor[3])
+-  }
+-  if(borderLineEnable[2]) {
+-    line.drawLine(
+-      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[3],
+-      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[3],
+-      borderLineWidth[2], borderLineColor[2])
++    vertexCount += 4
+   }
++  this.buffer.update(buffer)
+ 
+-  //Draw text elements
+-  text.bind()
+-  for(var i=0; i<2; ++i) {
+-    text.drawTicks(i)
+-  }
+-  if(this.titleEnable) {
+-    text.drawTitle()
+-  }
++  arcLengthArray.push(arcLength)
++  pointArray.push(positions[positions.length - 1].slice())
+ 
+-  //Draw other overlay elements (select boxes, etc.)
+-  var overlays = this.overlays
+-  for(var i=0; i<overlays.length; ++i) {
+-    overlays[i].draw()
+-  }
++  this.bounds = bounds
+ 
+-  //Turn off scissor test
+-  gl.disable(gl.SCISSOR_TEST)
+-  gl.disable(gl.BLEND)
+-  gl.depthMask(true)
+-}
+-})()
++  this.vertexCount = vertexCount
+ 
+-proto.drawPick = (function() {
++  this.points = pointArray
++  this.arcLength = arcLengthArray
+ 
+-return function() {
+-  var pickBuffer = this.pickBuffer
+-  var gl = this.gl
++  if ('dashes' in options) {
++    var dashArray = options.dashes
+ 
+-  this._pickTimeout = null
+-  pickBuffer.begin()
++    // Calculate prefix sum
++    var prefixSum = dashArray.slice()
++    prefixSum.unshift(0)
++    for (i = 1; i < prefixSum.length; ++i) {
++      prefixSum[i] = prefixSum[i - 1] + prefixSum[i]
++    }
+ 
+-  var pickOffset = 1
+-  var objects = this.objects
+-  for(var i=0; i<objects.length; ++i) {
+-    pickOffset = objects[i].drawPick(pickOffset)
+-  }
++    var dashTexture = ndarray(new Array(256 * 4), [256, 1, 4])
++    for (i = 0; i < 256; ++i) {
++      for (j = 0; j < 4; ++j) {
++        dashTexture.set(i, 0, j, 0)
++      }
++      if (bsearch.le(prefixSum, prefixSum[prefixSum.length - 1] * i / 255.0) & 1) {
++        dashTexture.set(i, 0, 0, 0)
++      } else {
++        dashTexture.set(i, 0, 0, 255)
++      }
++    }
+ 
+-  pickBuffer.end()
++    this.texture.setPixels(dashTexture)
++  }
+ }
+-})()
+ 
+-proto.pick = (function() {
+-return function(x, y) {
+-  var pixelRatio     = this.pixelRatio
+-  var pickPixelRatio = this.pickPixelRatio
+-  var viewBox        = this.viewBox
+-
+-  var scrX = Math.round((x - viewBox[0] / pixelRatio) * pickPixelRatio)|0
+-  var scrY = Math.round((y - viewBox[1] / pixelRatio) * pickPixelRatio)|0
++proto.dispose = function () {
++  this.shader.dispose()
++  this.vao.dispose()
++  this.buffer.dispose()
++}
+ 
+-  var pickResult = this.pickBuffer.query(scrX, scrY, this.pickRadius)
+-  if(!pickResult) {
++proto.pick = function (selection) {
++  if (!selection) {
++    return null
++  }
++  if (selection.id !== this.pickId) {
++    return null
++  }
++  var tau = unpackFloat(
++    selection.value[0],
++    selection.value[1],
++    selection.value[2],
++    0)
++  var index = bsearch.le(this.arcLength, tau)
++  if (index < 0) {
+     return null
+   }
++  if (index === this.arcLength.length - 1) {
++    return new PickResult(
++      this.arcLength[this.arcLength.length - 1],
++      this.points[this.points.length - 1].slice(),
++      index)
++  }
++  var a = this.points[index]
++  var b = this.points[Math.min(index + 1, this.points.length - 1)]
++  var t = (tau - this.arcLength[index]) / (this.arcLength[index + 1] - this.arcLength[index])
++  var ti = 1.0 - t
++  var x = [0, 0, 0]
++  for (var i = 0; i < 3; ++i) {
++    x[i] = ti * a[i] + t * b[i]
++  }
++  var dataIndex = Math.min((t < 0.5) ? index : (index + 1), this.points.length - 1)
++  return new PickResult(
++    tau,
++    x,
++    dataIndex,
++    this.points[dataIndex])
++}
+ 
+-  var pickValue = pickResult.id +
+-    (pickResult.value[0]<<8)  +
+-    (pickResult.value[1]<<16) +
+-    (pickResult.value[2]<<24)
++function createLinePlot (options) {
++  var gl = options.gl || (options.scene && options.scene.gl)
+ 
+-  var objects = this.objects
+-  for(var i=0; i<objects.length; ++i) {
+-    var result = objects[i].pick(scrX, scrY, pickValue)
+-    if(result) {
+-      return result
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  shader.attributes.nextPosition.location = 1
++  shader.attributes.arcLength.location = 2
++  shader.attributes.lineWidth.location = 3
++  shader.attributes.color.location = 4
++
++  var pickShader = createPickShader(gl)
++  pickShader.attributes.position.location = 0
++  pickShader.attributes.nextPosition.location = 1
++  pickShader.attributes.arcLength.location = 2
++  pickShader.attributes.lineWidth.location = 3
++  pickShader.attributes.color.location = 4
++
++  var buffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++    {
++      'buffer': buffer,
++      'size': 3,
++      'offset': 0,
++      'stride': 48
++    },
++    {
++      'buffer': buffer,
++      'size': 3,
++      'offset': 12,
++      'stride': 48
++    },
++    {
++      'buffer': buffer,
++      'size': 1,
++      'offset': 24,
++      'stride': 48
++    },
++    {
++      'buffer': buffer,
++      'size': 1,
++      'offset': 28,
++      'stride': 48
++    },
++    {
++      'buffer': buffer,
++      'size': 4,
++      'offset': 32,
++      'stride': 48
+     }
++  ])
++
++  // Create texture for dash pattern
++  var defaultTexture = ndarray(new Array(256 * 4), [256, 1, 4])
++  for (var i = 0; i < 256 * 4; ++i) {
++    defaultTexture.data[i] = 255
+   }
++  var texture = createTexture(gl, defaultTexture)
++  texture.wrap = gl.REPEAT
+ 
+-  return null
++  var linePlot = new LinePlot(gl, shader, pickShader, buffer, vao, texture)
++  linePlot.update(options)
++  return linePlot
+ }
+-})()
+ 
+-function deepClone(array) {
+-  var result = array.slice()
+-  for(var i=0; i<result.length; ++i) {
+-    result[i] = result[i].slice()
+-  }
+-  return result
+-}
++},{"./lib/shaders":132,"binary-search-bounds":48,"gl-buffer":121,"gl-texture2d":202,"gl-vao":206,"glsl-read-float":213,"ndarray":385}],134:[function(require,module,exports){
++module.exports = invert
+ 
+-function compareTicks(a, b) {
+-  return a.x - b.x
+-}
++/**
++ * Inverts a mat2
++ *
++ * @alias mat2.invert
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++function invert(out, a) {
++  var a0 = a[0]
++  var a1 = a[1]
++  var a2 = a[2]
++  var a3 = a[3]
++  var det = a0 * a3 - a2 * a1
+ 
+-proto.setScreenBox = function(nbox) {
+-  var screenBox = this.screenBox
+-  var pixelRatio = this.pixelRatio
++  if (!det) return null
++  det = 1.0 / det
+ 
+-  screenBox[0] = Math.round(nbox[0] * pixelRatio) | 0
+-  screenBox[1] = Math.round(nbox[1] * pixelRatio) | 0
+-  screenBox[2] = Math.round(nbox[2] * pixelRatio) | 0
+-  screenBox[3] = Math.round(nbox[3] * pixelRatio) | 0
++  out[0] =  a3 * det
++  out[1] = -a1 * det
++  out[2] = -a2 * det
++  out[3] =  a0 * det
+ 
+-  this.setDirty()
++  return out
+ }
+ 
+-proto.setDataBox = function(nbox) {
+-  var dataBox = this.dataBox
+-
+-  var different =
+-    dataBox[0] !== nbox[0] ||
+-    dataBox[1] !== nbox[1] ||
+-    dataBox[2] !== nbox[2] ||
+-    dataBox[3] !== nbox[3]
++},{}],135:[function(require,module,exports){
++module.exports = invert
+ 
+-  if(different) {
+-    dataBox[0] = nbox[0]
+-    dataBox[1] = nbox[1]
+-    dataBox[2] = nbox[2]
+-    dataBox[3] = nbox[3]
++/**
++ * Inverts a mat3
++ *
++ * @alias mat3.invert
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++function invert(out, a) {
++  var a00 = a[0], a01 = a[1], a02 = a[2]
++  var a10 = a[3], a11 = a[4], a12 = a[5]
++  var a20 = a[6], a21 = a[7], a22 = a[8]
+ 
+-    this.setDirty()
+-  }
+-}
++  var b01 = a22 * a11 - a12 * a21
++  var b11 = -a22 * a10 + a12 * a20
++  var b21 = a21 * a10 - a11 * a20
+ 
+-proto.setViewBox = function(nbox) {
+-  var pixelRatio = this.pixelRatio
+-  var viewBox = this.viewBox
++  // Calculate the determinant
++  var det = a00 * b01 + a01 * b11 + a02 * b21
+ 
+-  viewBox[0] = Math.round(nbox[0] * pixelRatio)|0
+-  viewBox[1] = Math.round(nbox[1] * pixelRatio)|0
+-  viewBox[2] = Math.round(nbox[2] * pixelRatio)|0
+-  viewBox[3] = Math.round(nbox[3] * pixelRatio)|0
++  if (!det) return null
++  det = 1.0 / det
+ 
+-  var pickPixelRatio = this.pickPixelRatio
+-  this.pickBuffer.shape = [
+-    Math.round((nbox[2] - nbox[0]) * pickPixelRatio)|0,
+-    Math.round((nbox[3] - nbox[1]) * pickPixelRatio)|0 ]
++  out[0] = b01 * det
++  out[1] = (-a22 * a01 + a02 * a21) * det
++  out[2] = (a12 * a01 - a02 * a11) * det
++  out[3] = b11 * det
++  out[4] = (a22 * a00 - a02 * a20) * det
++  out[5] = (-a12 * a00 + a02 * a10) * det
++  out[6] = b21 * det
++  out[7] = (-a21 * a00 + a01 * a20) * det
++  out[8] = (a11 * a00 - a01 * a10) * det
+ 
+-  this.setDirty()
++  return out
+ }
+ 
+-proto.update = function(options) {
+-  options = options || {}
++},{}],136:[function(require,module,exports){
++module.exports = clone;
+ 
+-  var gl = this.gl
++/**
++ * Creates a new mat4 initialized with values from an existing matrix
++ *
++ * @param {mat4} a matrix to clone
++ * @returns {mat4} a new 4x4 matrix
++ */
++function clone(a) {
++    var out = new Float32Array(16);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    out[9] = a[9];
++    out[10] = a[10];
++    out[11] = a[11];
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
++},{}],137:[function(require,module,exports){
++module.exports = create;
+ 
+-  this.pixelRatio      = options.pixelRatio || 1
++/**
++ * Creates a new identity mat4
++ *
++ * @returns {mat4} a new 4x4 matrix
++ */
++function create() {
++    var out = new Float32Array(16);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
++},{}],138:[function(require,module,exports){
++module.exports = determinant;
+ 
+-  var pixelRatio       = this.pixelRatio
+-  this.pickPixelRatio  = Math.max(pixelRatio, 1)
++/**
++ * Calculates the determinant of a mat4
++ *
++ * @param {mat4} a the source matrix
++ * @returns {Number} determinant of a
++ */
++function determinant(a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-  this.setScreenBox(options.screenBox ||
+-    [0, 0, gl.drawingBufferWidth/pixelRatio, gl.drawingBufferHeight/pixelRatio])
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32;
+ 
+-  var screenBox = this.screenBox
+-  this.setViewBox(options.viewBox ||
+-    [0.125*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
+-     0.125*(this.screenBox[3]-this.screenBox[1])/pixelRatio,
+-     0.875*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
+-     0.875*(this.screenBox[3]-this.screenBox[1])/pixelRatio])
++    // Calculate the determinant
++    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++};
++},{}],139:[function(require,module,exports){
++module.exports = fromQuat;
+ 
+-  var viewBox = this.viewBox
+-  var aspectRatio = (viewBox[2] - viewBox[0]) / (viewBox[3] - viewBox[1])
+-  this.setDataBox(options.dataBox || [-10, -10/aspectRatio, 10, 10/aspectRatio])
++/**
++ * Creates a matrix from a quaternion rotation.
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @returns {mat4} out
++ */
++function fromQuat(out, q) {
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-  this.borderColor     = (options.borderColor     || [0,0,0,0]).slice()
+-  this.backgroundColor = (options.backgroundColor || [0,0,0,0]).slice()
++        xx = x * x2,
++        yx = y * x2,
++        yy = y * y2,
++        zx = z * x2,
++        zy = z * y2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-  this.gridLineEnable  = (options.gridLineEnable || [true,true]).slice()
+-  this.gridLineWidth   = (options.gridLineWidth || [1,1]).slice()
+-  this.gridLineColor   = deepClone(options.gridLineColor ||
+-    [[0.5,0.5,0.5,1],[0.5,0.5,0.5,1]])
++    out[0] = 1 - yy - zz;
++    out[1] = yx + wz;
++    out[2] = zx - wy;
++    out[3] = 0;
+ 
+-  this.zeroLineEnable   = (options.zeroLineEnable || [true, true]).slice()
+-  this.zeroLineWidth    = (options.zeroLineWidth || [4, 4]).slice()
+-  this.zeroLineColor    = deepClone(options.zeroLineColor ||
+-    [[0, 0, 0, 1],[0, 0, 0, 1]])
++    out[4] = yx - wz;
++    out[5] = 1 - xx - zz;
++    out[6] = zy + wx;
++    out[7] = 0;
+ 
+-  this.tickMarkLength   = (options.tickMarkLength || [0,0,0,0]).slice()
+-  this.tickMarkWidth    = (options.tickMarkWidth || [0,0,0,0]).slice()
+-  this.tickMarkColor    = deepClone(options.tickMarkColor ||
+-    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++    out[8] = zx + wy;
++    out[9] = zy - wx;
++    out[10] = 1 - xx - yy;
++    out[11] = 0;
+ 
+-  this.titleCenter      = (options.titleCenter || [
+-    0.5*(viewBox[0]+viewBox[2])/pixelRatio,(viewBox[3]+120)/pixelRatio]).slice()
+-  this.titleEnable      = !('titleEnable' in options) || !!options.titleEnable
+-  this.titleAngle       = options.titleAngle || 0
+-  this.titleColor       = (options.titleColor || [0,0,0,1]).slice()
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
+ 
+-  this.labelPad         = (options.labelPad || [15,15,15,15]).slice()
+-  this.labelAngle       = (options.labelAngle ||
+-    [0,Math.PI/2,0,3.0*Math.PI/2]).slice()
+-  this.labelEnable      = (options.labelEnable || [true,true,true,true]).slice()
+-  this.labelColor       = deepClone(options.labelColor ||
+-    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++    return out;
++};
++},{}],140:[function(require,module,exports){
++module.exports = fromRotationTranslation;
+ 
+-  this.tickPad         = (options.tickPad || [15,15,15,15]).slice()
+-  this.tickAngle       = (options.tickAngle || [0,0,0,0]).slice()
+-  this.tickEnable      = (options.tickEnable || [true,true,true,true]).slice()
+-  this.tickColor       = deepClone(options.tickColor ||
+-    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++/**
++ * Creates a matrix from a quaternion rotation and vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @returns {mat4} out
++ */
++function fromRotationTranslation(out, q, v) {
++    // Quaternion math
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-  this.borderLineEnable = (options.borderLineEnable ||
+-                            [true,true,true,true]).slice()
+-  this.borderLineWidth  = (options.borderLineWidth || [2,2,2,2]).slice()
+-  this.borderLineColor  = deepClone(options.borderLineColor ||
+-                          [[0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1],
+-                           [0,0,0,1]])
++        xx = x * x2,
++        xy = x * y2,
++        xz = x * z2,
++        yy = y * y2,
++        yz = y * z2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-  var ticks = options.ticks || [ [], [] ]
++    out[0] = 1 - (yy + zz);
++    out[1] = xy + wz;
++    out[2] = xz - wy;
++    out[3] = 0;
++    out[4] = xy - wz;
++    out[5] = 1 - (xx + zz);
++    out[6] = yz + wx;
++    out[7] = 0;
++    out[8] = xz + wy;
++    out[9] = yz - wx;
++    out[10] = 1 - (xx + yy);
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
++    
++    return out;
++};
++},{}],141:[function(require,module,exports){
++module.exports = identity;
+ 
+-  //Compute bounds on ticks
+-  var bounds = this._tickBounds
+-  bounds[0] = bounds[1] =  Infinity
+-  bounds[2] = bounds[3] = -Infinity
+-  for(var i=0; i<2; ++i) {
+-    var axisTicks = ticks[i].slice(0)
+-    if(axisTicks.length === 0) {
+-      continue
+-    }
+-    axisTicks.sort(compareTicks)
+-    bounds[i]   = Math.min(bounds[i], axisTicks[0].x)
+-    bounds[i+2] = Math.max(bounds[i+2], axisTicks[axisTicks.length-1].x)
+-  }
++/**
++ * Set a mat4 to the identity matrix
++ *
++ * @param {mat4} out the receiving matrix
++ * @returns {mat4} out
++ */
++function identity(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
++},{}],142:[function(require,module,exports){
++module.exports = invert;
+ 
+-  //Update grid
+-  this.grid.update({
+-    bounds: bounds,
+-    ticks:  ticks
+-  })
++/**
++ * Inverts a mat4
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++function invert(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-  //Update text
+-  this.text.update({
+-    bounds:     bounds,
+-    ticks:      ticks,
+-    labels:     options.labels    || ['x', 'y'],
+-    labelSize:  options.labelSize || [12,12],
+-    labelFont:  options.labelFont || ['sans-serif', 'sans-serif'],
+-    title:      options.title     || '',
+-    titleSize:  options.titleSize || 18,
+-    titleFont:  options.titleFont || 'sans-serif'
+-  })
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32,
+ 
+-  this.setDirty()
+-}
++        // Calculate the determinant
++        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+ 
+-proto.dispose = function() {
+-  this.box.dispose()
+-  this.grid.dispose()
+-  this.text.dispose()
+-  this.line.dispose()
+-  for(var i=this.objects.length-1; i>=0; --i) {
+-    this.objects[i].dispose()
+-  }
+-  this.objects.length = 0
+-  for(var i=this.overlays.length-1; i>=0; --i) {
+-    this.overlays[i].dispose()
+-  }
+-  this.overlays.length = 0
++    if (!det) { 
++        return null; 
++    }
++    det = 1.0 / det;
+ 
+-  this.gl = null
+-}
++    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
++    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
++    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
++    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
++    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
++    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
++    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
++    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
++    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
++    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
++    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
++    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
++    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
++    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
++    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
++    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
+ 
+-proto.addObject = function(object) {
+-  if(this.objects.indexOf(object) < 0) {
+-    this.objects.push(object)
+-    this.setDirty()
+-  }
+-}
++    return out;
++};
++},{}],143:[function(require,module,exports){
++var identity = require('./identity');
+ 
+-proto.removeObject = function(object) {
+-  var objects = this.objects
+-  for(var i=0; i<objects.length; ++i) {
+-    if(objects[i] === object) {
+-      objects.splice(i,1)
+-      this.setDirty()
+-      break
+-    }
+-  }
+-}
++module.exports = lookAt;
+ 
+-proto.addOverlay = function(object) {
+-  if(this.overlays.indexOf(object) < 0) {
+-    this.overlays.push(object)
+-    this.setOverlayDirty()
+-  }
+-}
++/**
++ * Generates a look-at matrix with the given eye position, focal point, and up axis
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {vec3} eye Position of the viewer
++ * @param {vec3} center Point the viewer is looking at
++ * @param {vec3} up vec3 pointing up
++ * @returns {mat4} out
++ */
++function lookAt(out, eye, center, up) {
++    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
++        eyex = eye[0],
++        eyey = eye[1],
++        eyez = eye[2],
++        upx = up[0],
++        upy = up[1],
++        upz = up[2],
++        centerx = center[0],
++        centery = center[1],
++        centerz = center[2];
+ 
+-proto.removeOverlay = function(object) {
+-  var objects = this.overlays
+-  for(var i=0; i<objects.length; ++i) {
+-    if(objects[i] === object) {
+-      objects.splice(i,1)
+-      this.setOverlayDirty()
+-      break
++    if (Math.abs(eyex - centerx) < 0.000001 &&
++        Math.abs(eyey - centery) < 0.000001 &&
++        Math.abs(eyez - centerz) < 0.000001) {
++        return identity(out);
+     }
+-  }
+-}
+ 
+-function createGLPlot2D(options) {
+-  var gl = options.gl
+-  var pickBuffer = createPick(gl, [
+-    gl.drawingBufferWidth, gl.drawingBufferHeight])
+-  var plot = new GLPlot2D(gl, pickBuffer)
+-  plot.grid = createGrid(plot)
+-  plot.text = createText(plot)
+-  plot.line = createLine(plot)
+-  plot.box  = createBox(plot)
+-  plot.update(options)
+-  return plot
+-}
++    z0 = eyex - centerx;
++    z1 = eyey - centery;
++    z2 = eyez - centerz;
+ 
+-},{"./lib/box":165,"./lib/grid":166,"./lib/line":167,"./lib/text":169,"gl-select-static":202}],172:[function(require,module,exports){
++    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
++    z0 *= len;
++    z1 *= len;
++    z2 *= len;
+ 
+-var createShader = require('gl-shader')
++    x0 = upy * z2 - upz * z1;
++    x1 = upz * z0 - upx * z2;
++    x2 = upx * z1 - upy * z0;
++    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
++    if (!len) {
++        x0 = 0;
++        x1 = 0;
++        x2 = 0;
++    } else {
++        len = 1 / len;
++        x0 *= len;
++        x1 *= len;
++        x2 *= len;
++    }
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\nattribute vec2 position;\nvarying vec2 uv;\nvoid main() {\n  uv = position;\n  gl_Position = vec4(position, 0, 1);\n}"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D accumBuffer;\nvarying vec2 uv;\n\nvoid main() {\n  vec4 accum = texture2D(accumBuffer, 0.5 * (uv + 1.0));\n  gl_FragColor = min(vec4(1,1,1,1), accum);\n}"
++    y0 = z1 * x2 - z2 * x1;
++    y1 = z2 * x0 - z0 * x2;
++    y2 = z0 * x1 - z1 * x0;
+ 
+-module.exports = function(gl) {
+-  return createShader(gl, vertSrc, fragSrc, null, [ { name: 'position', type: 'vec2'}])
+-}
++    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
++    if (!len) {
++        y0 = 0;
++        y1 = 0;
++        y2 = 0;
++    } else {
++        len = 1 / len;
++        y0 *= len;
++        y1 *= len;
++        y2 *= len;
++    }
++
++    out[0] = x0;
++    out[1] = y0;
++    out[2] = z0;
++    out[3] = 0;
++    out[4] = x1;
++    out[5] = y1;
++    out[6] = z1;
++    out[7] = 0;
++    out[8] = x2;
++    out[9] = y2;
++    out[10] = z2;
++    out[11] = 0;
++    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
++    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
++    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
++    out[15] = 1;
+ 
+-},{"gl-shader":203}],173:[function(require,module,exports){
+-'use strict'
++    return out;
++};
++},{"./identity":141}],144:[function(require,module,exports){
++module.exports = multiply;
+ 
+-module.exports = createCamera
++/**
++ * Multiplies two mat4's
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++function multiply(out, a, b) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+ 
+-var now         = require('right-now')
+-var createView  = require('3d-view')
+-var mouseChange = require('mouse-change')
+-var mouseWheel  = require('mouse-wheel')
++    // Cache only the current line of the second matrix
++    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];  
++    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-function createCamera(element, options) {
+-  element = element || document.body
+-  options = options || {}
++    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
++    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-  var limits  = [ 0.01, Infinity ]
+-  if('distanceLimits' in options) {
+-    limits[0] = options.distanceLimits[0]
+-    limits[1] = options.distanceLimits[1]
+-  }
+-  if('zoomMin' in options) {
+-    limits[0] = options.zoomMin
+-  }
+-  if('zoomMax' in options) {
+-    limits[1] = options.zoomMax
+-  }
++    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
++    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-  var view = createView({
+-    center: options.center || [0,0,0],
+-    up:     options.up     || [0,1,0],
+-    eye:    options.eye    || [0,0,10],
+-    mode:   options.mode   || 'orbit',
+-    distanceLimits: limits
+-  })
++    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
++    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    return out;
++};
++},{}],145:[function(require,module,exports){
++module.exports = perspective;
+ 
+-  var pmatrix = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+-  var distance = 0.0
+-  var width   = element.clientWidth
+-  var height  = element.clientHeight
++/**
++ * Generates a perspective projection matrix with the given bounds
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {number} fovy Vertical field of view in radians
++ * @param {number} aspect Aspect ratio. typically viewport width/height
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++function perspective(out, fovy, aspect, near, far) {
++    var f = 1.0 / Math.tan(fovy / 2),
++        nf = 1 / (near - far);
++    out[0] = f / aspect;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = f;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = (far + near) * nf;
++    out[11] = -1;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = (2 * far * near) * nf;
++    out[15] = 0;
++    return out;
++};
++},{}],146:[function(require,module,exports){
++module.exports = rotate;
+ 
+-  var camera = {
+-    view:               view,
+-    element:            element,
+-    delay:              options.delay          || 16,
+-    rotateSpeed:        options.rotateSpeed    || 1,
+-    zoomSpeed:          options.zoomSpeed      || 1,
+-    translateSpeed:     options.translateSpeed || 1,
+-    flipX:              !!options.flipX,
+-    flipY:              !!options.flipY,
+-    modes:              view.modes,
+-    tick: function() {
+-      var t = now()
+-      var delay = this.delay
+-      view.idle(t-delay)
+-      view.flush(t-(100+delay*2))
+-      var ctime = t - 2 * delay
+-      view.recalcMatrix(ctime)
+-      var allEqual = true
+-      var matrix = view.computedMatrix
+-      for(var i=0; i<16; ++i) {
+-        allEqual = allEqual && (pmatrix[i] === matrix[i])
+-        pmatrix[i] = matrix[i]
+-      }
+-      var sizeChanged = 
+-          element.clientWidth === width && 
+-          element.clientHeight === height
+-      width  = element.clientWidth
+-      height = element.clientHeight
+-      if(allEqual) {
+-        return !sizeChanged
+-      }
+-      distance = Math.exp(view.computedRadius[0])
+-      return true
+-    },
+-    lookAt: function(center, eye, up) {
+-      view.lookAt(view.lastT(), center, eye, up)
+-    },
+-    rotate: function(pitch, yaw, roll) {
+-      view.rotate(view.lastT(), pitch, yaw, roll)
+-    },
+-    pan: function(dx, dy, dz) {
+-      view.pan(view.lastT(), dx, dy, dz)
+-    },
+-    translate: function(dx, dy, dz) {
+-      view.translate(view.lastT(), dx, dy, dz)
+-    }
+-  }
++/**
++ * Rotates a mat4 by the given angle
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @param {vec3} axis the axis to rotate around
++ * @returns {mat4} out
++ */
++function rotate(out, a, rad, axis) {
++    var x = axis[0], y = axis[1], z = axis[2],
++        len = Math.sqrt(x * x + y * y + z * z),
++        s, c, t,
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23,
++        b00, b01, b02,
++        b10, b11, b12,
++        b20, b21, b22;
+ 
+-  Object.defineProperties(camera, {
+-    matrix: {
+-      get: function() {
+-        return view.computedMatrix
+-      },
+-      set: function(mat) {
+-        view.setMatrix(view.lastT(), mat)
+-        return view.computedMatrix
+-      },
+-      enumerable: true
+-    },
+-    mode: {
+-      get: function() {
+-        return view.getMode()
+-      },
+-      set: function(mode) {
+-        view.setMode(mode)
+-        return view.getMode()
+-      },
+-      enumerable: true
+-    },
+-    center: {
+-      get: function() {
+-        return view.computedCenter
+-      },
+-      set: function(ncenter) {
+-        view.lookAt(view.lastT(), ncenter)
+-        return view.computedCenter
+-      },
+-      enumerable: true
+-    },
+-    eye: {
+-      get: function() {
+-        return view.computedEye
+-      },
+-      set: function(neye) {
+-        view.lookAt(view.lastT(), null, neye)
+-        return view.computedEye
+-      },
+-      enumerable: true
+-    },
+-    up: {
+-      get: function() {
+-        return view.computedUp
+-      },
+-      set: function(nup) {
+-        view.lookAt(view.lastT(), null, null, nup)
+-        return view.computedUp
+-      },
+-      enumerable: true
+-    },
+-    distance: {
+-      get: function() {
+-        return distance
+-      },
+-      set: function(d) {
+-        view.setDistance(view.lastT(), d)
+-        return d
+-      },
+-      enumerable: true
+-    },
+-    distanceLimits: {
+-      get: function() {
+-        return view.getDistanceLimits(limits)
+-      },
+-      set: function(v) {
+-        view.setDistanceLimits(v)
+-        return v
+-      },
+-      enumerable: true
+-    }
+-  })
+-  
+-  element.addEventListener('contextmenu', function(ev) {
+-    ev.preventDefault()
+-    return false
+-  })
++    if (Math.abs(len) < 0.000001) { return null; }
++    
++    len = 1 / len;
++    x *= len;
++    y *= len;
++    z *= len;
+ 
+-  var lastX = 0, lastY = 0
+-  mouseChange(element, function(buttons, x, y, mods) {
+-    var scale = 1.0 / element.clientHeight
+-    var dx    = scale * (x - lastX)
+-    var dy    = scale * (y - lastY)
++    s = Math.sin(rad);
++    c = Math.cos(rad);
++    t = 1 - c;
+ 
+-    var flipX = camera.flipX ? 1 : -1
+-    var flipY = camera.flipY ? 1 : -1
++    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-    var drot  = Math.PI * camera.rotateSpeed
++    // Construct the elements of the rotation matrix
++    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
++    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
++    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
+ 
+-    var t = now()
++    // Perform rotation-specific matrix multiplication
++    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
++    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
++    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
++    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
++    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
++    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
++    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
++    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
++    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
++    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
++    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
++    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
+ 
+-    if(buttons & 1) {
+-      if(mods.shift) {
+-        view.rotate(t, 0, 0, -dx * drot)
+-      } else {
+-        view.rotate(t, flipX * drot * dx, -flipY * drot * dy, 0)
+-      }
+-    } else if(buttons & 2) {
+-      view.pan(t, -camera.translateSpeed * dx * distance, camera.translateSpeed * dy * distance, 0)
+-    } else if(buttons & 4) {
+-      var kzoom = camera.zoomSpeed * dy / window.innerHeight * (t - view.lastT()) * 50.0
+-      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
++    return out;
++};
++},{}],147:[function(require,module,exports){
++module.exports = rotateX;
+ 
+-    lastX = x
+-    lastY = y
+-  })
++/**
++ * Rotates a matrix by the given angle around the X axis
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++function rotateX(out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
+ 
+-  mouseWheel(element, function(dx, dy, dz) {
+-    var flipX = camera.flipX ? 1 : -1
+-    var flipY = camera.flipY ? 1 : -1
+-    var t = now()
+-    if(Math.abs(dx) > Math.abs(dy)) {
+-      view.rotate(t, 0, 0, -dx * flipX * Math.PI * camera.rotateSpeed / window.innerWidth)
+-    } else {
+-      var kzoom = camera.zoomSpeed * flipY * dy / window.innerHeight * (t - view.lastT()) / 100.0
+-      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[0]  = a[0];
++        out[1]  = a[1];
++        out[2]  = a[2];
++        out[3]  = a[3];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+-  }, true)
+ 
+-  return camera
+-}
+-},{"3d-view":40,"mouse-change":421,"mouse-wheel":425,"right-now":435}],174:[function(require,module,exports){
+-// Copyright (C) 2011 Google Inc.
+-//
+-// Licensed under the Apache License, Version 2.0 (the "License");
+-// you may not use this file except in compliance with the License.
+-// You may obtain a copy of the License at
+-//
+-// http://www.apache.org/licenses/LICENSE-2.0
+-//
+-// Unless required by applicable law or agreed to in writing, software
+-// distributed under the License is distributed on an "AS IS" BASIS,
+-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-// See the License for the specific language governing permissions and
+-// limitations under the License.
++    // Perform axis-specific matrix multiplication
++    out[4] = a10 * c + a20 * s;
++    out[5] = a11 * c + a21 * s;
++    out[6] = a12 * c + a22 * s;
++    out[7] = a13 * c + a23 * s;
++    out[8] = a20 * c - a10 * s;
++    out[9] = a21 * c - a11 * s;
++    out[10] = a22 * c - a12 * s;
++    out[11] = a23 * c - a13 * s;
++    return out;
++};
++},{}],148:[function(require,module,exports){
++module.exports = rotateY;
+ 
+ /**
+- * @fileoverview Install a leaky WeakMap emulation on platforms that
+- * don't provide a built-in one.
+- *
+- * <p>Assumes that an ES5 platform where, if {@code WeakMap} is
+- * already present, then it conforms to the anticipated ES6
+- * specification. To run this file on an ES5 or almost ES5
+- * implementation where the {@code WeakMap} specification does not
+- * quite conform, run <code>repairES5.js</code> first.
+- *
+- * <p>Even though WeakMapModule is not global, the linter thinks it
+- * is, which is why it is in the overrides list below.
+- *
+- * <p>NOTE: Before using this WeakMap emulation in a non-SES
+- * environment, see the note below about hiddenRecord.
++ * Rotates a matrix by the given angle around the Y axis
+  *
+- * @author Mark S. Miller
+- * @requires crypto, ArrayBuffer, Uint8Array, navigator, console
+- * @overrides WeakMap, ses, Proxy
+- * @overrides WeakMapModule
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
+  */
++function rotateY(out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
++
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[4]  = a[4];
++        out[5]  = a[5];
++        out[6]  = a[6];
++        out[7]  = a[7];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
++
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c - a20 * s;
++    out[1] = a01 * c - a21 * s;
++    out[2] = a02 * c - a22 * s;
++    out[3] = a03 * c - a23 * s;
++    out[8] = a00 * s + a20 * c;
++    out[9] = a01 * s + a21 * c;
++    out[10] = a02 * s + a22 * c;
++    out[11] = a03 * s + a23 * c;
++    return out;
++};
++},{}],149:[function(require,module,exports){
++module.exports = rotateZ;
+ 
+ /**
+- * This {@code WeakMap} emulation is observably equivalent to the
+- * ES-Harmony WeakMap, but with leakier garbage collection properties.
+- *
+- * <p>As with true WeakMaps, in this emulation, a key does not
+- * retain maps indexed by that key and (crucially) a map does not
+- * retain the keys it indexes. A map by itself also does not retain
+- * the values associated with that map.
+- *
+- * <p>However, the values associated with a key in some map are
+- * retained so long as that key is retained and those associations are
+- * not overridden. For example, when used to support membranes, all
+- * values exported from a given membrane will live for the lifetime
+- * they would have had in the absence of an interposed membrane. Even
+- * when the membrane is revoked, all objects that would have been
+- * reachable in the absence of revocation will still be reachable, as
+- * far as the GC can tell, even though they will no longer be relevant
+- * to ongoing computation.
+- *
+- * <p>The API implemented here is approximately the API as implemented
+- * in FF6.0a1 and agreed to by MarkM, Andreas Gal, and Dave Herman,
+- * rather than the offially approved proposal page. TODO(erights):
+- * upgrade the ecmascript WeakMap proposal page to explain this API
+- * change and present to EcmaScript committee for their approval.
+- *
+- * <p>The first difference between the emulation here and that in
+- * FF6.0a1 is the presence of non enumerable {@code get___, has___,
+- * set___, and delete___} methods on WeakMap instances to represent
+- * what would be the hidden internal properties of a primitive
+- * implementation. Whereas the FF6.0a1 WeakMap.prototype methods
+- * require their {@code this} to be a genuine WeakMap instance (i.e.,
+- * an object of {@code [[Class]]} "WeakMap}), since there is nothing
+- * unforgeable about the pseudo-internal method names used here,
+- * nothing prevents these emulated prototype methods from being
+- * applied to non-WeakMaps with pseudo-internal methods of the same
+- * names.
++ * Rotates a matrix by the given angle around the Z axis
+  *
+- * <p>Another difference is that our emulated {@code
+- * WeakMap.prototype} is not itself a WeakMap. A problem with the
+- * current FF6.0a1 API is that WeakMap.prototype is itself a WeakMap
+- * providing ambient mutability and an ambient communications
+- * channel. Thus, if a WeakMap is already present and has this
+- * problem, repairES5.js wraps it in a safe wrappper in order to
+- * prevent access to this channel. (See
+- * PATCH_MUTABLE_FROZEN_WEAKMAP_PROTO in repairES5.js).
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
+  */
++function rotateZ(out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7];
++
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[8]  = a[8];
++        out[9]  = a[9];
++        out[10] = a[10];
++        out[11] = a[11];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
++
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c + a10 * s;
++    out[1] = a01 * c + a11 * s;
++    out[2] = a02 * c + a12 * s;
++    out[3] = a03 * c + a13 * s;
++    out[4] = a10 * c - a00 * s;
++    out[5] = a11 * c - a01 * s;
++    out[6] = a12 * c - a02 * s;
++    out[7] = a13 * c - a03 * s;
++    return out;
++};
++},{}],150:[function(require,module,exports){
++module.exports = scale;
+ 
+ /**
+- * If this is a full <a href=
+- * "http://code.google.com/p/es-lab/wiki/SecureableES5"
+- * >secureable ES5</a> platform and the ES-Harmony {@code WeakMap} is
+- * absent, install an approximate emulation.
+- *
+- * <p>If WeakMap is present but cannot store some objects, use our approximate
+- * emulation as a wrapper.
++ * Scales the mat4 by the dimensions in the given vec3
+  *
+- * <p>If this is almost a secureable ES5 platform, then WeakMap.js
+- * should be run after repairES5.js.
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ **/
++function scale(out, a, v) {
++    var x = v[0], y = v[1], z = v[2];
++
++    out[0] = a[0] * x;
++    out[1] = a[1] * x;
++    out[2] = a[2] * x;
++    out[3] = a[3] * x;
++    out[4] = a[4] * y;
++    out[5] = a[5] * y;
++    out[6] = a[6] * y;
++    out[7] = a[7] * y;
++    out[8] = a[8] * z;
++    out[9] = a[9] * z;
++    out[10] = a[10] * z;
++    out[11] = a[11] * z;
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
++},{}],151:[function(require,module,exports){
++module.exports = translate;
++
++/**
++ * Translate a mat4 by the given vector
+  *
+- * <p>See {@code WeakMap} for documentation of the garbage collection
+- * properties of this WeakMap emulation.
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
+  */
+-(function WeakMapModule() {
+-  "use strict";
++function translate(out, a, v) {
++    var x = v[0], y = v[1], z = v[2],
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23;
+ 
+-  if (typeof ses !== 'undefined' && ses.ok && !ses.ok()) {
+-    // already too broken, so give up
+-    return;
+-  }
++    if (a === out) {
++        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
++        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
++        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
++        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
++    } else {
++        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-  /**
+-   * In some cases (current Firefox), we must make a choice betweeen a
+-   * WeakMap which is capable of using all varieties of host objects as
+-   * keys and one which is capable of safely using proxies as keys. See
+-   * comments below about HostWeakMap and DoubleWeakMap for details.
+-   *
+-   * This function (which is a global, not exposed to guests) marks a
+-   * WeakMap as permitted to do what is necessary to index all host
+-   * objects, at the cost of making it unsafe for proxies.
+-   *
+-   * Do not apply this function to anything which is not a genuine
+-   * fresh WeakMap.
+-   */
+-  function weakMapPermitHostObjects(map) {
+-    // identity of function used as a secret -- good enough and cheap
+-    if (map.permitHostObjects___) {
+-      map.permitHostObjects___(weakMapPermitHostObjects);
+-    }
+-  }
+-  if (typeof ses !== 'undefined') {
+-    ses.weakMapPermitHostObjects = weakMapPermitHostObjects;
+-  }
++        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
++        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
++        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
+ 
+-  // IE 11 has no Proxy but has a broken WeakMap such that we need to patch
+-  // it using DoubleWeakMap; this flag tells DoubleWeakMap so.
+-  var doubleWeakMapCheckSilentFailure = false;
++        out[12] = a00 * x + a10 * y + a20 * z + a[12];
++        out[13] = a01 * x + a11 * y + a21 * z + a[13];
++        out[14] = a02 * x + a12 * y + a22 * z + a[14];
++        out[15] = a03 * x + a13 * y + a23 * z + a[15];
++    }
+ 
+-  // Check if there is already a good-enough WeakMap implementation, and if so
+-  // exit without replacing it.
+-  if (typeof WeakMap === 'function') {
+-    var HostWeakMap = WeakMap;
+-    // There is a WeakMap -- is it good enough?
+-    if (typeof navigator !== 'undefined' &&
+-        /Firefox/.test(navigator.userAgent)) {
+-      // We're now *assuming not*, because as of this writing (2013-05-06)
+-      // Firefox's WeakMaps have a miscellany of objects they won't accept, and
+-      // we don't want to make an exhaustive list, and testing for just one
+-      // will be a problem if that one is fixed alone (as they did for Event).
++    return out;
++};
++},{}],152:[function(require,module,exports){
++module.exports = transpose;
+ 
+-      // If there is a platform that we *can* reliably test on, here's how to
+-      // do it:
+-      //  var problematic = ... ;
+-      //  var testHostMap = new HostWeakMap();
+-      //  try {
+-      //    testHostMap.set(problematic, 1);  // Firefox 20 will throw here
+-      //    if (testHostMap.get(problematic) === 1) {
+-      //      return;
+-      //    }
+-      //  } catch (e) {}
++/**
++ * Transpose the values of a mat4
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++function transpose(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a01 = a[1], a02 = a[2], a03 = a[3],
++            a12 = a[6], a13 = a[7],
++            a23 = a[11];
+ 
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a01;
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a02;
++        out[9] = a12;
++        out[11] = a[14];
++        out[12] = a03;
++        out[13] = a13;
++        out[14] = a23;
+     } else {
+-      // IE 11 bug: WeakMaps silently fail to store frozen objects.
+-      var testMap = new HostWeakMap();
+-      var testObject = Object.freeze({});
+-      testMap.set(testObject, 1);
+-      if (testMap.get(testObject) !== 1) {
+-        doubleWeakMapCheckSilentFailure = true;
+-        // Fall through to installing our WeakMap.
+-      } else {
+-        module.exports = WeakMap;
+-        return;
+-      }
++        out[0] = a[0];
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a[1];
++        out[5] = a[5];
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a[2];
++        out[9] = a[6];
++        out[10] = a[10];
++        out[11] = a[14];
++        out[12] = a[3];
++        out[13] = a[7];
++        out[14] = a[11];
++        out[15] = a[15];
+     }
+-  }
+-
+-  var hop = Object.prototype.hasOwnProperty;
+-  var gopn = Object.getOwnPropertyNames;
+-  var defProp = Object.defineProperty;
+-  var isExtensible = Object.isExtensible;
+-
+-  /**
+-   * Security depends on HIDDEN_NAME being both <i>unguessable</i> and
+-   * <i>undiscoverable</i> by untrusted code.
+-   *
+-   * <p>Given the known weaknesses of Math.random() on existing
+-   * browsers, it does not generate unguessability we can be confident
+-   * of.
+-   *
+-   * <p>It is the monkey patching logic in this file that is intended
+-   * to ensure undiscoverability. The basic idea is that there are
+-   * three fundamental means of discovering properties of an object:
+-   * The for/in loop, Object.keys(), and Object.getOwnPropertyNames(),
+-   * as well as some proposed ES6 extensions that appear on our
+-   * whitelist. The first two only discover enumerable properties, and
+-   * we only use HIDDEN_NAME to name a non-enumerable property, so the
+-   * only remaining threat should be getOwnPropertyNames and some
+-   * proposed ES6 extensions that appear on our whitelist. We monkey
+-   * patch them to remove HIDDEN_NAME from the list of properties they
+-   * returns.
+-   *
+-   * <p>TODO(erights): On a platform with built-in Proxies, proxies
+-   * could be used to trap and thereby discover the HIDDEN_NAME, so we
+-   * need to monkey patch Proxy.create, Proxy.createFunction, etc, in
+-   * order to wrap the provided handler with the real handler which
+-   * filters out all traps using HIDDEN_NAME.
+-   *
+-   * <p>TODO(erights): Revisit Mike Stay's suggestion that we use an
+-   * encapsulated function at a not-necessarily-secret name, which
+-   * uses the Stiegler shared-state rights amplification pattern to
+-   * reveal the associated value only to the WeakMap in which this key
+-   * is associated with that value. Since only the key retains the
+-   * function, the function can also remember the key without causing
+-   * leakage of the key, so this doesn't violate our general gc
+-   * goals. In addition, because the name need not be a guarded
+-   * secret, we could efficiently handle cross-frame frozen keys.
+-   */
+-  var HIDDEN_NAME_PREFIX = 'weakmap:';
+-  var HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'ident:' + Math.random() + '___';
+-
+-  if (typeof crypto !== 'undefined' &&
+-      typeof crypto.getRandomValues === 'function' &&
+-      typeof ArrayBuffer === 'function' &&
+-      typeof Uint8Array === 'function') {
+-    var ab = new ArrayBuffer(25);
+-    var u8s = new Uint8Array(ab);
+-    crypto.getRandomValues(u8s);
+-    HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'rand:' +
+-      Array.prototype.map.call(u8s, function(u8) {
+-        return (u8 % 36).toString(36);
+-      }).join('') + '___';
+-  }
++    
++    return out;
++};
++},{}],153:[function(require,module,exports){
++'use strict'
+ 
+-  function isNotHiddenName(name) {
+-    return !(
+-        name.substr(0, HIDDEN_NAME_PREFIX.length) == HIDDEN_NAME_PREFIX &&
+-        name.substr(name.length - 3) === '___');
+-  }
++module.exports = invert
+ 
+-  /**
+-   * Monkey patch getOwnPropertyNames to avoid revealing the
+-   * HIDDEN_NAME.
+-   *
+-   * <p>The ES5.1 spec requires each name to appear only once, but as
+-   * of this writing, this requirement is controversial for ES6, so we
+-   * made this code robust against this case. If the resulting extra
+-   * search turns out to be expensive, we can probably relax this once
+-   * ES6 is adequately supported on all major browsers, iff no browser
+-   * versions we support at that time have relaxed this constraint
+-   * without providing built-in ES6 WeakMaps.
+-   */
+-  defProp(Object, 'getOwnPropertyNames', {
+-    value: function fakeGetOwnPropertyNames(obj) {
+-      return gopn(obj).filter(isNotHiddenName);
+-    }
+-  });
++var invert2 = require('gl-mat2/invert')
++var invert3 = require('gl-mat3/invert')
++var invert4 = require('gl-mat4/invert')
+ 
+-  /**
+-   * getPropertyNames is not in ES5 but it is proposed for ES6 and
+-   * does appear in our whitelist, so we need to clean it too.
+-   */
+-  if ('getPropertyNames' in Object) {
+-    var originalGetPropertyNames = Object.getPropertyNames;
+-    defProp(Object, 'getPropertyNames', {
+-      value: function fakeGetPropertyNames(obj) {
+-        return originalGetPropertyNames(obj).filter(isNotHiddenName);
+-      }
+-    });
++function invert(out, M) {
++  switch(M.length) {
++    case 0:
++    break
++    case 1:
++      out[0] = 1.0 / M[0]
++    break
++    case 4:
++      invert2(out, M)
++    break
++    case 9:
++      invert3(out, M)
++    break
++    case 16:
++      invert4(out, M)
++    break
++    default:
++      throw new Error('currently supports matrices up to 4x4')
++    break
+   }
++  return out
++}
++},{"gl-mat2/invert":134,"gl-mat3/invert":135,"gl-mat4/invert":142}],154:[function(require,module,exports){
++/**
++ * @fileoverview gl-matrix - High performance matrix and vector operations
++ * @author Brandon Jones
++ * @author Colin MacKenzie IV
++ * @version 2.3.2
++ */
+ 
+-  /**
+-   * <p>To treat objects as identity-keys with reasonable efficiency
+-   * on ES5 by itself (i.e., without any object-keyed collections), we
+-   * need to add a hidden property to such key objects when we
+-   * can. This raises several issues:
+-   * <ul>
+-   * <li>Arranging to add this property to objects before we lose the
+-   *     chance, and
+-   * <li>Hiding the existence of this new property from most
+-   *     JavaScript code.
+-   * <li>Preventing <i>certification theft</i>, where one object is
+-   *     created falsely claiming to be the key of an association
+-   *     actually keyed by another object.
+-   * <li>Preventing <i>value theft</i>, where untrusted code with
+-   *     access to a key object but not a weak map nevertheless
+-   *     obtains access to the value associated with that key in that
+-   *     weak map.
+-   * </ul>
+-   * We do so by
+-   * <ul>
+-   * <li>Making the name of the hidden property unguessable, so "[]"
+-   *     indexing, which we cannot intercept, cannot be used to access
+-   *     a property without knowing the name.
+-   * <li>Making the hidden property non-enumerable, so we need not
+-   *     worry about for-in loops or {@code Object.keys},
+-   * <li>monkey patching those reflective methods that would
+-   *     prevent extensions, to add this hidden property first,
+-   * <li>monkey patching those methods that would reveal this
+-   *     hidden property.
+-   * </ul>
+-   * Unfortunately, because of same-origin iframes, we cannot reliably
+-   * add this hidden property before an object becomes
+-   * non-extensible. Instead, if we encounter a non-extensible object
+-   * without a hidden record that we can detect (whether or not it has
+-   * a hidden record stored under a name secret to us), then we just
+-   * use the key object itself to represent its identity in a brute
+-   * force leaky map stored in the weak map, losing all the advantages
+-   * of weakness for these.
+-   */
+-  function getHiddenRecord(key) {
+-    if (key !== Object(key)) {
+-      throw new TypeError('Not an object: ' + key);
+-    }
+-    var hiddenRecord = key[HIDDEN_NAME];
+-    if (hiddenRecord && hiddenRecord.key === key) { return hiddenRecord; }
+-    if (!isExtensible(key)) {
+-      // Weak map must brute force, as explained in doc-comment above.
+-      return void 0;
+-    }
+-
+-    // The hiddenRecord and the key point directly at each other, via
+-    // the "key" and HIDDEN_NAME properties respectively. The key
+-    // field is for quickly verifying that this hidden record is an
+-    // own property, not a hidden record from up the prototype chain.
+-    //
+-    // NOTE: Because this WeakMap emulation is meant only for systems like
+-    // SES where Object.prototype is frozen without any numeric
+-    // properties, it is ok to use an object literal for the hiddenRecord.
+-    // This has two advantages:
+-    // * It is much faster in a performance critical place
+-    // * It avoids relying on Object.create(null), which had been
+-    //   problematic on Chrome 28.0.1480.0. See
+-    //   https://code.google.com/p/google-caja/issues/detail?id=1687
+-    hiddenRecord = { key: key };
+-
+-    // When using this WeakMap emulation on platforms where
+-    // Object.prototype might not be frozen and Object.create(null) is
+-    // reliable, use the following two commented out lines instead.
+-    // hiddenRecord = Object.create(null);
+-    // hiddenRecord.key = key;
+-
+-    // Please contact us if you need this to work on platforms where
+-    // Object.prototype might not be frozen and
+-    // Object.create(null) might not be reliable.
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-    try {
+-      defProp(key, HIDDEN_NAME, {
+-        value: hiddenRecord,
+-        writable: false,
+-        enumerable: false,
+-        configurable: false
+-      });
+-      return hiddenRecord;
+-    } catch (error) {
+-      // Under some circumstances, isExtensible seems to misreport whether
+-      // the HIDDEN_NAME can be defined.
+-      // The circumstances have not been isolated, but at least affect
+-      // Node.js v0.10.26 on TravisCI / Linux, but not the same version of
+-      // Node.js on OS X.
+-      return void 0;
+-    }
+-  }
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-  /**
+-   * Monkey patch operations that would make their argument
+-   * non-extensible.
+-   *
+-   * <p>The monkey patched versions throw a TypeError if their
+-   * argument is not an object, so it should only be done to functions
+-   * that should throw a TypeError anyway if their argument is not an
+-   * object.
+-   */
+-  (function(){
+-    var oldFreeze = Object.freeze;
+-    defProp(Object, 'freeze', {
+-      value: function identifyingFreeze(obj) {
+-        getHiddenRecord(obj);
+-        return oldFreeze(obj);
+-      }
+-    });
+-    var oldSeal = Object.seal;
+-    defProp(Object, 'seal', {
+-      value: function identifyingSeal(obj) {
+-        getHiddenRecord(obj);
+-        return oldSeal(obj);
+-      }
+-    });
+-    var oldPreventExtensions = Object.preventExtensions;
+-    defProp(Object, 'preventExtensions', {
+-      value: function identifyingPreventExtensions(obj) {
+-        getHiddenRecord(obj);
+-        return oldPreventExtensions(obj);
+-      }
+-    });
+-  })();
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-  function constFunc(func) {
+-    func.prototype = null;
+-    return Object.freeze(func);
+-  }
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
++// END HEADER
+ 
+-  var calledAsFunctionWarningDone = false;
+-  function calledAsFunctionWarning() {
+-    // Future ES6 WeakMap is currently (2013-09-10) expected to reject WeakMap()
+-    // but we used to permit it and do it ourselves, so warn only.
+-    if (!calledAsFunctionWarningDone && typeof console !== 'undefined') {
+-      calledAsFunctionWarningDone = true;
+-      console.warn('WeakMap should be invoked as new WeakMap(), not ' +
+-          'WeakMap(). This will be an error in the future.');
+-    }
+-  }
++exports.glMatrix = require("./gl-matrix/common.js");
++exports.mat2 = require("./gl-matrix/mat2.js");
++exports.mat2d = require("./gl-matrix/mat2d.js");
++exports.mat3 = require("./gl-matrix/mat3.js");
++exports.mat4 = require("./gl-matrix/mat4.js");
++exports.quat = require("./gl-matrix/quat.js");
++exports.vec2 = require("./gl-matrix/vec2.js");
++exports.vec3 = require("./gl-matrix/vec3.js");
++exports.vec4 = require("./gl-matrix/vec4.js");
++},{"./gl-matrix/common.js":155,"./gl-matrix/mat2.js":156,"./gl-matrix/mat2d.js":157,"./gl-matrix/mat3.js":158,"./gl-matrix/mat4.js":159,"./gl-matrix/quat.js":160,"./gl-matrix/vec2.js":161,"./gl-matrix/vec3.js":162,"./gl-matrix/vec4.js":163}],155:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-  var nextId = 0;
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-  var OurWeakMap = function() {
+-    if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
+-      calledAsFunctionWarning();
+-    }
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-    // We are currently (12/25/2012) never encountering any prematurely
+-    // non-extensible keys.
+-    var keys = []; // brute force for prematurely non-extensible keys.
+-    var values = []; // brute force for corresponding values.
+-    var id = nextId++;
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-    function get___(key, opt_default) {
+-      var index;
+-      var hiddenRecord = getHiddenRecord(key);
+-      if (hiddenRecord) {
+-        return id in hiddenRecord ? hiddenRecord[id] : opt_default;
+-      } else {
+-        index = keys.indexOf(key);
+-        return index >= 0 ? values[index] : opt_default;
+-      }
+-    }
++/**
++ * @class Common utilities
++ * @name glMatrix
++ */
++var glMatrix = {};
+ 
+-    function has___(key) {
+-      var hiddenRecord = getHiddenRecord(key);
+-      if (hiddenRecord) {
+-        return id in hiddenRecord;
+-      } else {
+-        return keys.indexOf(key) >= 0;
+-      }
+-    }
++// Configuration Constants
++glMatrix.EPSILON = 0.000001;
++glMatrix.ARRAY_TYPE = (typeof Float32Array !== 'undefined') ? Float32Array : Array;
++glMatrix.RANDOM = Math.random;
++glMatrix.ENABLE_SIMD = false;
+ 
+-    function set___(key, value) {
+-      var index;
+-      var hiddenRecord = getHiddenRecord(key);
+-      if (hiddenRecord) {
+-        hiddenRecord[id] = value;
+-      } else {
+-        index = keys.indexOf(key);
+-        if (index >= 0) {
+-          values[index] = value;
+-        } else {
+-          // Since some browsers preemptively terminate slow turns but
+-          // then continue computing with presumably corrupted heap
+-          // state, we here defensively get keys.length first and then
+-          // use it to update both the values and keys arrays, keeping
+-          // them in sync.
+-          index = keys.length;
+-          values[index] = value;
+-          // If we crash here, values will be one longer than keys.
+-          keys[index] = key;
+-        }
+-      }
+-      return this;
+-    }
++// Capability detection
++glMatrix.SIMD_AVAILABLE = (glMatrix.ARRAY_TYPE === Float32Array) && ('SIMD' in this);
++glMatrix.USE_SIMD = glMatrix.ENABLE_SIMD && glMatrix.SIMD_AVAILABLE;
+ 
+-    function delete___(key) {
+-      var hiddenRecord = getHiddenRecord(key);
+-      var index, lastIndex;
+-      if (hiddenRecord) {
+-        return id in hiddenRecord && delete hiddenRecord[id];
+-      } else {
+-        index = keys.indexOf(key);
+-        if (index < 0) {
+-          return false;
+-        }
+-        // Since some browsers preemptively terminate slow turns but
+-        // then continue computing with potentially corrupted heap
+-        // state, we here defensively get keys.length first and then use
+-        // it to update both the keys and the values array, keeping
+-        // them in sync. We update the two with an order of assignments,
+-        // such that any prefix of these assignments will preserve the
+-        // key/value correspondence, either before or after the delete.
+-        // Note that this needs to work correctly when index === lastIndex.
+-        lastIndex = keys.length - 1;
+-        keys[index] = void 0;
+-        // If we crash here, there's a void 0 in the keys array, but
+-        // no operation will cause a "keys.indexOf(void 0)", since
+-        // getHiddenRecord(void 0) will always throw an error first.
+-        values[index] = values[lastIndex];
+-        // If we crash here, values[index] cannot be found here,
+-        // because keys[index] is void 0.
+-        keys[index] = keys[lastIndex];
+-        // If index === lastIndex and we crash here, then keys[index]
+-        // is still void 0, since the aliasing killed the previous key.
+-        keys.length = lastIndex;
+-        // If we crash here, keys will be one shorter than values.
+-        values.length = lastIndex;
+-        return true;
+-      }
+-    }
++/**
++ * Sets the type of array used when creating new vectors and matrices
++ *
++ * @param {Type} type Array type, such as Float32Array or Array
++ */
++glMatrix.setMatrixArrayType = function(type) {
++    glMatrix.ARRAY_TYPE = type;
++}
+ 
+-    return Object.create(OurWeakMap.prototype, {
+-      get___:    { value: constFunc(get___) },
+-      has___:    { value: constFunc(has___) },
+-      set___:    { value: constFunc(set___) },
+-      delete___: { value: constFunc(delete___) }
+-    });
+-  };
++var degree = Math.PI / 180;
+ 
+-  OurWeakMap.prototype = Object.create(Object.prototype, {
+-    get: {
+-      /**
+-       * Return the value most recently associated with key, or
+-       * opt_default if none.
+-       */
+-      value: function get(key, opt_default) {
+-        return this.get___(key, opt_default);
+-      },
+-      writable: true,
+-      configurable: true
+-    },
++/**
++* Convert Degree To Radian
++*
++* @param {Number} Angle in Degrees
++*/
++glMatrix.toRadian = function(a){
++     return a * degree;
++}
+ 
+-    has: {
+-      /**
+-       * Is there a value associated with key in this WeakMap?
+-       */
+-      value: function has(key) {
+-        return this.has___(key);
+-      },
+-      writable: true,
+-      configurable: true
+-    },
++/**
++ * Tests whether or not the arguments have approximately the same value, within an absolute
++ * or relative tolerance of glMatrix.EPSILON (an absolute tolerance is used for values less 
++ * than or equal to 1.0, and a relative tolerance is used for larger values)
++ * 
++ * @param {Number} a The first number to test.
++ * @param {Number} b The second number to test.
++ * @returns {Boolean} True if the numbers are approximately equal, false otherwise.
++ */
++glMatrix.equals = function(a, b) {
++	return Math.abs(a - b) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a), Math.abs(b));
++}
+ 
+-    set: {
+-      /**
+-       * Associate value with key in this WeakMap, overwriting any
+-       * previous association if present.
+-       */
+-      value: function set(key, value) {
+-        return this.set___(key, value);
+-      },
+-      writable: true,
+-      configurable: true
+-    },
++module.exports = glMatrix;
+ 
+-    'delete': {
+-      /**
+-       * Remove any association for key in this WeakMap, returning
+-       * whether there was one.
+-       *
+-       * <p>Note that the boolean return here does not work like the
+-       * {@code delete} operator. The {@code delete} operator returns
+-       * whether the deletion succeeds at bringing about a state in
+-       * which the deleted property is absent. The {@code delete}
+-       * operator therefore returns true if the property was already
+-       * absent, whereas this {@code delete} method returns false if
+-       * the association was already absent.
+-       */
+-      value: function remove(key) {
+-        return this.delete___(key);
+-      },
+-      writable: true,
+-      configurable: true
+-    }
+-  });
++},{}],156:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-  if (typeof HostWeakMap === 'function') {
+-    (function() {
+-      // If we got here, then the platform has a WeakMap but we are concerned
+-      // that it may refuse to store some key types. Therefore, make a map
+-      // implementation which makes use of both as possible.
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-      // In this mode we are always using double maps, so we are not proxy-safe.
+-      // This combination does not occur in any known browser, but we had best
+-      // be safe.
+-      if (doubleWeakMapCheckSilentFailure && typeof Proxy !== 'undefined') {
+-        Proxy = undefined;
+-      }
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-      function DoubleWeakMap() {
+-        if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
+-          calledAsFunctionWarning();
+-        }
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-        // Preferable, truly weak map.
+-        var hmap = new HostWeakMap();
++var glMatrix = require("./common.js");
+ 
+-        // Our hidden-property-based pseudo-weak-map. Lazily initialized in the
+-        // 'set' implementation; thus we can avoid performing extra lookups if
+-        // we know all entries actually stored are entered in 'hmap'.
+-        var omap = undefined;
++/**
++ * @class 2x2 Matrix
++ * @name mat2
++ */
++var mat2 = {};
+ 
+-        // Hidden-property maps are not compatible with proxies because proxies
+-        // can observe the hidden name and either accidentally expose it or fail
+-        // to allow the hidden property to be set. Therefore, we do not allow
+-        // arbitrary WeakMaps to switch to using hidden properties, but only
+-        // those which need the ability, and unprivileged code is not allowed
+-        // to set the flag.
+-        //
+-        // (Except in doubleWeakMapCheckSilentFailure mode in which case we
+-        // disable proxies.)
+-        var enableSwitching = false;
++/**
++ * Creates a new identity mat2
++ *
++ * @returns {mat2} a new 2x2 matrix
++ */
++mat2.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
++};
+ 
+-        function dget(key, opt_default) {
+-          if (omap) {
+-            return hmap.has(key) ? hmap.get(key)
+-                : omap.get___(key, opt_default);
+-          } else {
+-            return hmap.get(key, opt_default);
+-          }
+-        }
++/**
++ * Creates a new mat2 initialized with values from an existing matrix
++ *
++ * @param {mat2} a matrix to clone
++ * @returns {mat2} a new 2x2 matrix
++ */
++mat2.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-        function dhas(key) {
+-          return hmap.has(key) || (omap ? omap.has___(key) : false);
+-        }
++/**
++ * Copy the values from one mat2 to another
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++mat2.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-        var dset;
+-        if (doubleWeakMapCheckSilentFailure) {
+-          dset = function(key, value) {
+-            hmap.set(key, value);
+-            if (!hmap.has(key)) {
+-              if (!omap) { omap = new OurWeakMap(); }
+-              omap.set(key, value);
+-            }
+-            return this;
+-          };
+-        } else {
+-          dset = function(key, value) {
+-            if (enableSwitching) {
+-              try {
+-                hmap.set(key, value);
+-              } catch (e) {
+-                if (!omap) { omap = new OurWeakMap(); }
+-                omap.set___(key, value);
+-              }
+-            } else {
+-              hmap.set(key, value);
+-            }
+-            return this;
+-          };
+-        }
++/**
++ * Set a mat2 to the identity matrix
++ *
++ * @param {mat2} out the receiving matrix
++ * @returns {mat2} out
++ */
++mat2.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
++};
+ 
+-        function ddelete(key) {
+-          var result = !!hmap['delete'](key);
+-          if (omap) { return omap.delete___(key) || result; }
+-          return result;
+-        }
++/**
++ * Create a new mat2 with the given values
++ *
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m10 Component in column 1, row 0 position (index 2)
++ * @param {Number} m11 Component in column 1, row 1 position (index 3)
++ * @returns {mat2} out A new 2x2 matrix
++ */
++mat2.fromValues = function(m00, m01, m10, m11) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m10;
++    out[3] = m11;
++    return out;
++};
+ 
+-        return Object.create(OurWeakMap.prototype, {
+-          get___:    { value: constFunc(dget) },
+-          has___:    { value: constFunc(dhas) },
+-          set___:    { value: constFunc(dset) },
+-          delete___: { value: constFunc(ddelete) },
+-          permitHostObjects___: { value: constFunc(function(token) {
+-            if (token === weakMapPermitHostObjects) {
+-              enableSwitching = true;
+-            } else {
+-              throw new Error('bogus call to permitHostObjects___');
+-            }
+-          })}
+-        });
+-      }
+-      DoubleWeakMap.prototype = OurWeakMap.prototype;
+-      module.exports = DoubleWeakMap;
++/**
++ * Set the components of a mat2 to the given values
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m10 Component in column 1, row 0 position (index 2)
++ * @param {Number} m11 Component in column 1, row 1 position (index 3)
++ * @returns {mat2} out
++ */
++mat2.set = function(out, m00, m01, m10, m11) {
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m10;
++    out[3] = m11;
++    return out;
++};
+ 
+-      // define .constructor to hide OurWeakMap ctor
+-      Object.defineProperty(WeakMap.prototype, 'constructor', {
+-        value: WeakMap,
+-        enumerable: false,  // as default .constructor is
+-        configurable: true,
+-        writable: true
+-      });
+-    })();
+-  } else {
+-    // There is no host WeakMap, so we must use the emulation.
+ 
+-    // Emulated WeakMaps are incompatible with native proxies (because proxies
+-    // can observe the hidden name), so we must disable Proxy usage (in
+-    // ArrayLike and Domado, currently).
+-    if (typeof Proxy !== 'undefined') {
+-      Proxy = undefined;
++/**
++ * Transpose the values of a mat2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++mat2.transpose = function(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a1 = a[1];
++        out[1] = a[2];
++        out[2] = a1;
++    } else {
++        out[0] = a[0];
++        out[1] = a[2];
++        out[2] = a[1];
++        out[3] = a[3];
+     }
++    
++    return out;
++};
+ 
+-    module.exports = OurWeakMap;
+-  }
+-})();
++/**
++ * Inverts a mat2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++mat2.invert = function(out, a) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+ 
+-},{}],175:[function(require,module,exports){
+-'use strict'
++        // Calculate the determinant
++        det = a0 * a3 - a2 * a1;
+ 
+-var weakMap      = typeof WeakMap === 'undefined' ? require('weak-map') : WeakMap
+-var createBuffer = require('gl-buffer')
+-var createVAO    = require('gl-vao')
++    if (!det) {
++        return null;
++    }
++    det = 1.0 / det;
++    
++    out[0] =  a3 * det;
++    out[1] = -a1 * det;
++    out[2] = -a2 * det;
++    out[3] =  a0 * det;
+ 
+-var TriangleCache = new weakMap()
++    return out;
++};
+ 
+-function createABigTriangle(gl) {
++/**
++ * Calculates the adjugate of a mat2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the source matrix
++ * @returns {mat2} out
++ */
++mat2.adjoint = function(out, a) {
++    // Caching this value is nessecary if out == a
++    var a0 = a[0];
++    out[0] =  a[3];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    out[3] =  a0;
+ 
+-  var triangleVAO = TriangleCache.get(gl)
+-  if(!triangleVAO || !gl.isBuffer(triangleVAO._triangleBuffer.buffer)) {
+-    var buf = createBuffer(gl, new Float32Array([-1, -1, -1, 4, 4, -1]))
+-    triangleVAO = createVAO(gl, [
+-      { buffer: buf,
+-        type: gl.FLOAT,
+-        size: 2
+-      }
+-    ])
+-    triangleVAO._triangleBuffer = buf
+-    TriangleCache.set(gl, triangleVAO)
+-  }
+-  triangleVAO.bind()
+-  gl.drawArrays(gl.TRIANGLES, 0, 3)
+-  triangleVAO.unbind()
+-}
++    return out;
++};
+ 
+-module.exports = createABigTriangle
++/**
++ * Calculates the determinant of a mat2
++ *
++ * @param {mat2} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat2.determinant = function (a) {
++    return a[0] * a[3] - a[2] * a[1];
++};
+ 
+-},{"gl-buffer":124,"gl-vao":232,"weak-map":174}],176:[function(require,module,exports){
+-'use strict'
++/**
++ * Multiplies two mat2's
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @returns {mat2} out
++ */
++mat2.multiply = function (out, a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    out[0] = a0 * b0 + a2 * b1;
++    out[1] = a1 * b0 + a3 * b1;
++    out[2] = a0 * b2 + a2 * b3;
++    out[3] = a1 * b2 + a3 * b3;
++    return out;
++};
+ 
+-module.exports = createAxes
++/**
++ * Alias for {@link mat2.multiply}
++ * @function
++ */
++mat2.mul = mat2.multiply;
++
++/**
++ * Rotates a mat2 by the given angle
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2} out
++ */
++mat2.rotate = function (out, a, rad) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++        s = Math.sin(rad),
++        c = Math.cos(rad);
++    out[0] = a0 *  c + a2 * s;
++    out[1] = a1 *  c + a3 * s;
++    out[2] = a0 * -s + a2 * c;
++    out[3] = a1 * -s + a3 * c;
++    return out;
++};
+ 
+-var createText        = require('./lib/text.js')
+-var createLines       = require('./lib/lines.js')
+-var createBackground  = require('./lib/background.js')
+-var getCubeProperties = require('./lib/cube.js')
+-var Ticks             = require('./lib/ticks.js')
++/**
++ * Scales the mat2 by the dimensions in the given vec2
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the matrix to rotate
++ * @param {vec2} v the vec2 to scale the matrix by
++ * @returns {mat2} out
++ **/
++mat2.scale = function(out, a, v) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++        v0 = v[0], v1 = v[1];
++    out[0] = a0 * v0;
++    out[1] = a1 * v0;
++    out[2] = a2 * v1;
++    out[3] = a3 * v1;
++    return out;
++};
+ 
+-var identity = new Float32Array([
+-  1, 0, 0, 0,
+-  0, 1, 0, 0,
+-  0, 0, 1, 0,
+-  0, 0, 0, 1])
++/**
++ * Creates a matrix from a given angle
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2.identity(dest);
++ *     mat2.rotate(dest, dest, rad);
++ *
++ * @param {mat2} out mat2 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2} out
++ */
++mat2.fromRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
++    out[0] = c;
++    out[1] = s;
++    out[2] = -s;
++    out[3] = c;
++    return out;
++}
+ 
+-function copyVec3(a, b) {
+-  a[0] = b[0]
+-  a[1] = b[1]
+-  a[2] = b[2]
+-  return a
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2.identity(dest);
++ *     mat2.scale(dest, dest, vec);
++ *
++ * @param {mat2} out mat2 receiving operation result
++ * @param {vec2} v Scaling vector
++ * @returns {mat2} out
++ */
++mat2.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = v[1];
++    return out;
+ }
+ 
+-function Axes(gl) {
+-  this.gl             = gl
++/**
++ * Returns a string representation of a mat2
++ *
++ * @param {mat2} mat matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat2.str = function (a) {
++    return 'mat2(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
++};
+ 
+-  this.pixelRatio     = 1
++/**
++ * Returns Frobenius norm of a mat2
++ *
++ * @param {mat2} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
++ */
++mat2.frob = function (a) {
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2)))
++};
+ 
+-  this.bounds         = [ [-10, -10, -10],
+-                          [ 10,  10,  10] ]
+-  this.ticks          = [ [], [], [] ]
+-  this.autoTicks      = true
+-  this.tickSpacing    = [ 1, 1, 1 ]
++/**
++ * Returns L, D and U matrices (Lower triangular, Diagonal and Upper triangular) by factorizing the input matrix
++ * @param {mat2} L the lower triangular matrix 
++ * @param {mat2} D the diagonal matrix 
++ * @param {mat2} U the upper triangular matrix 
++ * @param {mat2} a the input matrix to factorize
++ */
+ 
+-  this.tickEnable     = [ true, true, true ]
+-  this.tickFont       = [ 'sans-serif', 'sans-serif', 'sans-serif' ]
+-  this.tickSize       = [ 12, 12, 12 ]
+-  this.tickAngle      = [ 0, 0, 0 ]
+-  this.tickColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+-  this.tickPad        = [ 10, 10, 10 ]
++mat2.LDU = function (L, D, U, a) { 
++    L[2] = a[2]/a[0]; 
++    U[0] = a[0]; 
++    U[1] = a[1]; 
++    U[3] = a[3] - L[2] * U[1]; 
++    return [L, D, U];       
++}; 
+ 
+-  this.lastCubeProps  = {
+-    cubeEdges: [0,0,0],
+-    axis:      [0,0,0]
+-  }
++/**
++ * Adds two mat2's
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @returns {mat2} out
++ */
++mat2.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    return out;
++};
+ 
+-  this.labels         = [ 'x', 'y', 'z' ]
+-  this.labelEnable    = [ true, true, true ]
+-  this.labelFont      = 'sans-serif'
+-  this.labelSize      = [ 20, 20, 20 ]
+-  this.labelAngle     = [ 0, 0, 0 ]
+-  this.labelColor     = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+-  this.labelPad       = [ 10, 10, 10 ]
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @returns {mat2} out
++ */
++mat2.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    return out;
++};
+ 
+-  this.lineEnable     = [ true, true, true ]
+-  this.lineMirror     = [ false, false, false ]
+-  this.lineWidth      = [ 1, 1, 1 ]
+-  this.lineColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++/**
++ * Alias for {@link mat2.subtract}
++ * @function
++ */
++mat2.sub = mat2.subtract;
+ 
+-  this.lineTickEnable = [ true, true, true ]
+-  this.lineTickMirror = [ false, false, false ]
+-  this.lineTickLength = [ 0, 0, 0 ]
+-  this.lineTickWidth  = [ 1, 1, 1 ]
+-  this.lineTickColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++/**
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {mat2} a The first matrix.
++ * @param {mat2} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat2.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
++};
+ 
+-  this.gridEnable     = [ true, true, true ]
+-  this.gridWidth      = [ 1, 1, 1 ]
+-  this.gridColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat2} a The first matrix.
++ * @param {mat2} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat2.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
++};
+ 
+-  this.zeroEnable     = [ true, true, true ]
+-  this.zeroLineColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
+-  this.zeroLineWidth  = [ 2, 2, 2 ]
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat2} out the receiving matrix
++ * @param {mat2} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat2} out
++ */
++mat2.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    return out;
++};
+ 
+-  this.backgroundEnable = [ false, false, false ]
+-  this.backgroundColor  = [ [0.8, 0.8, 0.8, 0.5],
+-                            [0.8, 0.8, 0.8, 0.5],
+-                            [0.8, 0.8, 0.8, 0.5] ]
++/**
++ * Adds two mat2's after multiplying each element of the second operand by a scalar value.
++ *
++ * @param {mat2} out the receiving vector
++ * @param {mat2} a the first operand
++ * @param {mat2} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat2} out
++ */
++mat2.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    return out;
++};
+ 
+-  this._firstInit = true
+-  this._text  = null
+-  this._lines = null
+-  this._background = createBackground(gl)
+-}
++module.exports = mat2;
+ 
+-var proto = Axes.prototype
++},{"./common.js":155}],157:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-proto.update = function(options) {
+-  options = options || {}
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-  //Option parsing helper functions
+-  function parseOption(nest, cons, name) {
+-    if(name in options) {
+-      var opt = options[name]
+-      var prev = this[name]
+-      var next
+-      if(nest ? (Array.isArray(opt) && Array.isArray(opt[0])) :
+-                 Array.isArray(opt) ) {
+-        this[name] = next = [ cons(opt[0]), cons(opt[1]), cons(opt[2]) ]
+-      } else {
+-        this[name] = next = [ cons(opt), cons(opt), cons(opt) ]
+-      }
+-      for(var i=0; i<3; ++i) {
+-        if(next[i] !== prev[i]) {
+-          return true
+-        }
+-      }
+-    }
+-    return false
+-  }
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-  var NUMBER  = parseOption.bind(this, false, Number)
+-  var BOOLEAN = parseOption.bind(this, false, Boolean)
+-  var STRING  = parseOption.bind(this, false, String)
+-  var COLOR   = parseOption.bind(this, true, function(v) {
+-    if(Array.isArray(v)) {
+-      if(v.length === 3) {
+-        return [ +v[0], +v[1], +v[2], 1.0 ]
+-      } else if(v.length === 4) {
+-        return [ +v[0], +v[1], +v[2], +v[3] ]
+-      }
+-    }
+-    return [ 0, 0, 0, 1 ]
+-  })
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-  //Tick marks and bounds
+-  var nextTicks
+-  var ticksUpdate   = false
+-  var boundsChanged = false
+-  if('bounds' in options) {
+-    var bounds = options.bounds
+-i_loop:
+-    for(var i=0; i<2; ++i) {
+-      for(var j=0; j<3; ++j) {
+-        if(bounds[i][j] !== this.bounds[i][j]) {
+-          boundsChanged = true
+-        }
+-        this.bounds[i][j] = bounds[i][j]
+-      }
+-    }
+-  }
+-  if('ticks' in options) {
+-    nextTicks      = options.ticks
+-    ticksUpdate    = true
+-    this.autoTicks = false
+-    for(var i=0; i<3; ++i) {
+-      this.tickSpacing[i] = 0.0
+-    }
+-  } else if(NUMBER('tickSpacing')) {
+-    this.autoTicks  = true
+-    boundsChanged   = true
+-  }
++var glMatrix = require("./common.js");
+ 
+-  if(this._firstInit) {
+-    if(!('ticks' in options || 'tickSpacing' in options)) {
+-      this.autoTicks = true
+-    }
++/**
++ * @class 2x3 Matrix
++ * @name mat2d
++ * 
++ * @description 
++ * A mat2d contains six elements defined as:
++ * <pre>
++ * [a, c, tx,
++ *  b, d, ty]
++ * </pre>
++ * This is a short form for the 3x3 matrix:
++ * <pre>
++ * [a, c, tx,
++ *  b, d, ty,
++ *  0, 0, 1]
++ * </pre>
++ * The last row is ignored so the array is shorter and operations are faster.
++ */
++var mat2d = {};
+ 
+-    //Force tick recomputation on first update
+-    boundsChanged   = true
+-    ticksUpdate     = true
+-    this._firstInit = false
+-  }
++/**
++ * Creates a new identity mat2d
++ *
++ * @returns {mat2d} a new 2x3 matrix
++ */
++mat2d.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(6);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    out[4] = 0;
++    out[5] = 0;
++    return out;
++};
+ 
+-  if(boundsChanged && this.autoTicks) {
+-    nextTicks = Ticks.create(this.bounds, this.tickSpacing)
+-    ticksUpdate = true
+-  }
++/**
++ * Creates a new mat2d initialized with values from an existing matrix
++ *
++ * @param {mat2d} a matrix to clone
++ * @returns {mat2d} a new 2x3 matrix
++ */
++mat2d.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(6);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    return out;
++};
+ 
+-  //Compare next ticks to previous ticks, only update if needed
+-  if(ticksUpdate) {
+-    for(var i=0; i<3; ++i) {
+-      nextTicks[i].sort(function(a,b) {
+-        return a.x-b.x
+-      })
+-    }
+-    if(Ticks.equal(nextTicks, this.ticks)) {
+-      ticksUpdate = false
+-    } else {
+-      this.ticks = nextTicks
+-    }
+-  }
++/**
++ * Copy the values from one mat2d to another
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the source matrix
++ * @returns {mat2d} out
++ */
++mat2d.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    return out;
++};
+ 
+-  //Parse tick properties
+-  BOOLEAN('tickEnable')
+-  if(STRING('tickFont')) {
+-    ticksUpdate = true  //If font changes, must rebuild vbo
+-  }
+-  NUMBER('tickSize')
+-  NUMBER('tickAngle')
+-  NUMBER('tickPad')
+-  COLOR('tickColor')
++/**
++ * Set a mat2d to the identity matrix
++ *
++ * @param {mat2d} out the receiving matrix
++ * @returns {mat2d} out
++ */
++mat2d.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    out[4] = 0;
++    out[5] = 0;
++    return out;
++};
+ 
+-  //Axis labels
+-  var labelUpdate = STRING('labels')
+-  if(STRING('labelFont')) {
+-    labelUpdate = true
+-  }
+-  BOOLEAN('labelEnable')
+-  NUMBER('labelSize')
+-  NUMBER('labelPad')
+-  COLOR('labelColor')
++/**
++ * Create a new mat2d with the given values
++ *
++ * @param {Number} a Component A (index 0)
++ * @param {Number} b Component B (index 1)
++ * @param {Number} c Component C (index 2)
++ * @param {Number} d Component D (index 3)
++ * @param {Number} tx Component TX (index 4)
++ * @param {Number} ty Component TY (index 5)
++ * @returns {mat2d} A new mat2d
++ */
++mat2d.fromValues = function(a, b, c, d, tx, ty) {
++    var out = new glMatrix.ARRAY_TYPE(6);
++    out[0] = a;
++    out[1] = b;
++    out[2] = c;
++    out[3] = d;
++    out[4] = tx;
++    out[5] = ty;
++    return out;
++};
+ 
+-  //Axis lines
+-  BOOLEAN('lineEnable')
+-  BOOLEAN('lineMirror')
+-  NUMBER('lineWidth')
+-  COLOR('lineColor')
++/**
++ * Set the components of a mat2d to the given values
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {Number} a Component A (index 0)
++ * @param {Number} b Component B (index 1)
++ * @param {Number} c Component C (index 2)
++ * @param {Number} d Component D (index 3)
++ * @param {Number} tx Component TX (index 4)
++ * @param {Number} ty Component TY (index 5)
++ * @returns {mat2d} out
++ */
++mat2d.set = function(out, a, b, c, d, tx, ty) {
++    out[0] = a;
++    out[1] = b;
++    out[2] = c;
++    out[3] = d;
++    out[4] = tx;
++    out[5] = ty;
++    return out;
++};
+ 
+-  //Axis line ticks
+-  BOOLEAN('lineTickEnable')
+-  BOOLEAN('lineTickMirror')
+-  NUMBER('lineTickLength')
+-  NUMBER('lineTickWidth')
+-  COLOR('lineTickColor')
++/**
++ * Inverts a mat2d
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the source matrix
++ * @returns {mat2d} out
++ */
++mat2d.invert = function(out, a) {
++    var aa = a[0], ab = a[1], ac = a[2], ad = a[3],
++        atx = a[4], aty = a[5];
+ 
+-  //Grid lines
+-  BOOLEAN('gridEnable')
+-  NUMBER('gridWidth')
+-  COLOR('gridColor')
++    var det = aa * ad - ab * ac;
++    if(!det){
++        return null;
++    }
++    det = 1.0 / det;
+ 
+-  //Zero line
+-  BOOLEAN('zeroEnable')
+-  COLOR('zeroLineColor')
+-  NUMBER('zeroLineWidth')
++    out[0] = ad * det;
++    out[1] = -ab * det;
++    out[2] = -ac * det;
++    out[3] = aa * det;
++    out[4] = (ac * aty - ad * atx) * det;
++    out[5] = (ab * atx - aa * aty) * det;
++    return out;
++};
+ 
+-  //Background
+-  BOOLEAN('backgroundEnable')
+-  COLOR('backgroundColor')
++/**
++ * Calculates the determinant of a mat2d
++ *
++ * @param {mat2d} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat2d.determinant = function (a) {
++    return a[0] * a[3] - a[1] * a[2];
++};
+ 
+-  //Update text if necessary
+-  if(!this._text) {
+-    this._text = createText(
+-      this.gl,
+-      this.bounds,
+-      this.labels,
+-      this.labelFont,
+-      this.ticks,
+-      this.tickFont)
+-  } else if(this._text && (labelUpdate || ticksUpdate)) {
+-    this._text.update(
+-      this.bounds,
+-      this.labels,
+-      this.labelFont,
+-      this.ticks,
+-      this.tickFont)
+-  }
++/**
++ * Multiplies two mat2d's
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @returns {mat2d} out
++ */
++mat2d.multiply = function (out, a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
++    out[0] = a0 * b0 + a2 * b1;
++    out[1] = a1 * b0 + a3 * b1;
++    out[2] = a0 * b2 + a2 * b3;
++    out[3] = a1 * b2 + a3 * b3;
++    out[4] = a0 * b4 + a2 * b5 + a4;
++    out[5] = a1 * b4 + a3 * b5 + a5;
++    return out;
++};
+ 
+-  //Update lines if necessary
+-  if(this._lines && ticksUpdate) {
+-    this._lines.dispose()
+-    this._lines = null
+-  }
+-  if(!this._lines) {
+-    this._lines = createLines(this.gl, this.bounds, this.ticks)
+-  }
+-}
++/**
++ * Alias for {@link mat2d.multiply}
++ * @function
++ */
++mat2d.mul = mat2d.multiply;
+ 
+-function OffsetInfo() {
+-  this.primalOffset = [0,0,0]
+-  this.primalMinor  = [0,0,0]
+-  this.mirrorOffset = [0,0,0]
+-  this.mirrorMinor  = [0,0,0]
+-}
++/**
++ * Rotates a mat2d by the given angle
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2d} out
++ */
++mat2d.rotate = function (out, a, rad) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        s = Math.sin(rad),
++        c = Math.cos(rad);
++    out[0] = a0 *  c + a2 * s;
++    out[1] = a1 *  c + a3 * s;
++    out[2] = a0 * -s + a2 * c;
++    out[3] = a1 * -s + a3 * c;
++    out[4] = a4;
++    out[5] = a5;
++    return out;
++};
+ 
+-var LINE_OFFSET = [ new OffsetInfo(), new OffsetInfo(), new OffsetInfo() ]
++/**
++ * Scales the mat2d by the dimensions in the given vec2
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to translate
++ * @param {vec2} v the vec2 to scale the matrix by
++ * @returns {mat2d} out
++ **/
++mat2d.scale = function(out, a, v) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        v0 = v[0], v1 = v[1];
++    out[0] = a0 * v0;
++    out[1] = a1 * v0;
++    out[2] = a2 * v1;
++    out[3] = a3 * v1;
++    out[4] = a4;
++    out[5] = a5;
++    return out;
++};
+ 
+-function computeLineOffset(result, i, bounds, cubeEdges, cubeAxis) {
+-  var primalOffset = result.primalOffset
+-  var primalMinor  = result.primalMinor
+-  var dualOffset   = result.mirrorOffset
+-  var dualMinor    = result.mirrorMinor
+-  var e = cubeEdges[i]
++/**
++ * Translates the mat2d by the dimensions in the given vec2
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to translate
++ * @param {vec2} v the vec2 to translate the matrix by
++ * @returns {mat2d} out
++ **/
++mat2d.translate = function(out, a, v) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
++        v0 = v[0], v1 = v[1];
++    out[0] = a0;
++    out[1] = a1;
++    out[2] = a2;
++    out[3] = a3;
++    out[4] = a0 * v0 + a2 * v1 + a4;
++    out[5] = a1 * v0 + a3 * v1 + a5;
++    return out;
++};
+ 
+-  //Calculate offsets
+-  for(var j=0; j<3; ++j) {
+-    if(i === j) {
+-      continue
+-    }
+-    var a = primalOffset,
+-        b = dualOffset,
+-        c = primalMinor,
+-        d = dualMinor
+-    if(e & (1<<j)) {
+-      a = dualOffset
+-      b = primalOffset
+-      c = dualMinor
+-      d = primalMinor
+-    }
+-    a[j] = bounds[0][j]
+-    b[j] = bounds[1][j]
+-    if(cubeAxis[j] > 0) {
+-      c[j] = -1
+-      d[j] = 0
+-    } else {
+-      c[j] = 0
+-      d[j] = +1
+-    }
+-  }
++/**
++ * Creates a matrix from a given angle
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2d.identity(dest);
++ *     mat2d.rotate(dest, dest, rad);
++ *
++ * @param {mat2d} out mat2d receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat2d} out
++ */
++mat2d.fromRotation = function(out, rad) {
++    var s = Math.sin(rad), c = Math.cos(rad);
++    out[0] = c;
++    out[1] = s;
++    out[2] = -s;
++    out[3] = c;
++    out[4] = 0;
++    out[5] = 0;
++    return out;
+ }
+ 
+-var CUBE_ENABLE = [0,0,0]
+-var DEFAULT_PARAMS = {
+-  model:      identity,
+-  view:       identity,
+-  projection: identity
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2d.identity(dest);
++ *     mat2d.scale(dest, dest, vec);
++ *
++ * @param {mat2d} out mat2d receiving operation result
++ * @param {vec2} v Scaling vector
++ * @returns {mat2d} out
++ */
++mat2d.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = v[1];
++    out[4] = 0;
++    out[5] = 0;
++    return out;
+ }
+ 
+-proto.isOpaque = function() {
+-  return true
++/**
++ * Creates a matrix from a vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat2d.identity(dest);
++ *     mat2d.translate(dest, dest, vec);
++ *
++ * @param {mat2d} out mat2d receiving operation result
++ * @param {vec2} v Translation vector
++ * @returns {mat2d} out
++ */
++mat2d.fromTranslation = function(out, v) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    out[4] = v[0];
++    out[5] = v[1];
++    return out;
+ }
+ 
+-proto.isTransparent = function() {
+-  return false
+-}
++/**
++ * Returns a string representation of a mat2d
++ *
++ * @param {mat2d} a matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat2d.str = function (a) {
++    return 'mat2d(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
++                    a[3] + ', ' + a[4] + ', ' + a[5] + ')';
++};
+ 
+-proto.drawTransparent = function(params) {}
++/**
++ * Returns Frobenius norm of a mat2d
++ *
++ * @param {mat2d} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
++ */
++mat2d.frob = function (a) { 
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + 1))
++}; 
+ 
++/**
++ * Adds two mat2d's
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @returns {mat2d} out
++ */
++mat2d.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    out[4] = a[4] + b[4];
++    out[5] = a[5] + b[5];
++    return out;
++};
+ 
+-var PRIMAL_MINOR  = [0,0,0]
+-var MIRROR_MINOR  = [0,0,0]
+-var PRIMAL_OFFSET = [0,0,0]
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @returns {mat2d} out
++ */
++mat2d.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    out[4] = a[4] - b[4];
++    out[5] = a[5] - b[5];
++    return out;
++};
+ 
+-proto.draw = function(params) {
+-  params = params || DEFAULT_PARAMS
++/**
++ * Alias for {@link mat2d.subtract}
++ * @function
++ */
++mat2d.sub = mat2d.subtract;
+ 
+-  var gl = this.gl
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat2d} out the receiving matrix
++ * @param {mat2d} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat2d} out
++ */
++mat2d.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    out[4] = a[4] * b;
++    out[5] = a[5] * b;
++    return out;
++};
+ 
+-  //Geometry for camera and axes
+-  var model       = params.model || identity
+-  var view        = params.view || identity
+-  var projection  = params.projection || identity
+-  var bounds      = this.bounds
++/**
++ * Adds two mat2d's after multiplying each element of the second operand by a scalar value.
++ *
++ * @param {mat2d} out the receiving vector
++ * @param {mat2d} a the first operand
++ * @param {mat2d} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat2d} out
++ */
++mat2d.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    out[4] = a[4] + (b[4] * scale);
++    out[5] = a[5] + (b[5] * scale);
++    return out;
++};
+ 
+-  //Unpack axis info
+-  var cubeParams  = getCubeProperties(model, view, projection, bounds)
+-  var cubeEdges   = cubeParams.cubeEdges
+-  var cubeAxis    = cubeParams.axis
++/**
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {mat2d} a The first matrix.
++ * @param {mat2d} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat2d.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5];
++};
+ 
+-  var cx = view[12]
+-  var cy = view[13]
+-  var cz = view[14]
+-  var cw = view[15]
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat2d} a The first matrix.
++ * @param {mat2d} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat2d.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
++            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
++            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)));
++};
+ 
+-  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight
++module.exports = mat2d;
+ 
+-  for(var i=0; i<3; ++i) {
+-    this.lastCubeProps.cubeEdges[i] = cubeEdges[i]
+-    this.lastCubeProps.axis[i] = cubeAxis[i]
+-  }
++},{"./common.js":155}],158:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-  //Compute axis info
+-  var lineOffset  = LINE_OFFSET
+-  for(var i=0; i<3; ++i) {
+-    computeLineOffset(
+-      LINE_OFFSET[i],
+-      i,
+-      this.bounds,
+-      cubeEdges,
+-      cubeAxis)
+-  }
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-  //Set up state parameters
+-  var gl = this.gl
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-  //Draw background first
+-  var cubeEnable = CUBE_ENABLE
+-  for(var i=0; i<3; ++i) {
+-    if(this.backgroundEnable[i]) {
+-      cubeEnable[i] = cubeAxis[i]
+-    } else {
+-      cubeEnable[i] = 0
+-    }
+-  }
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-  this._background.draw(
+-    model,
+-    view,
+-    projection,
+-    bounds,
+-    cubeEnable,
+-    this.backgroundColor)
++var glMatrix = require("./common.js");
+ 
+-  //Draw lines
+-  this._lines.bind(
+-    model,
+-    view,
+-    projection,
+-    this)
++/**
++ * @class 3x3 Matrix
++ * @name mat3
++ */
++var mat3 = {};
++
++/**
++ * Creates a new identity mat3
++ *
++ * @returns {mat3} a new 3x3 matrix
++ */
++mat3.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(9);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 1;
++    out[5] = 0;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
++};
++
++/**
++ * Copies the upper-left 3x3 values into the given mat3.
++ *
++ * @param {mat3} out the receiving 3x3 matrix
++ * @param {mat4} a   the source 4x4 matrix
++ * @returns {mat3} out
++ */
++mat3.fromMat4 = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[4];
++    out[4] = a[5];
++    out[5] = a[6];
++    out[6] = a[8];
++    out[7] = a[9];
++    out[8] = a[10];
++    return out;
++};
++
++/**
++ * Creates a new mat3 initialized with values from an existing matrix
++ *
++ * @param {mat3} a matrix to clone
++ * @returns {mat3} a new 3x3 matrix
++ */
++mat3.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(9);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    return out;
++};
+ 
+-  //First draw grid lines and zero lines
+-  for(var i=0; i<3; ++i) {
+-    var x = [0,0,0]
+-    if(cubeAxis[i] > 0) {
+-      x[i] = bounds[1][i]
+-    } else {
+-      x[i] = bounds[0][i]
+-    }
++/**
++ * Copy the values from one mat3 to another
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    return out;
++};
+ 
+-    //Draw grid lines
+-    for(var j=0; j<2; ++j) {
+-      var u = (i + 1 + j) % 3
+-      var v = (i + 1 + (j^1)) % 3
+-      if(this.gridEnable[u]) {
+-        this._lines.drawGrid(u, v, this.bounds, x, this.gridColor[u], this.gridWidth[u]*this.pixelRatio)
+-      }
+-    }
++/**
++ * Create a new mat3 with the given values
++ *
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m10 Component in column 1, row 0 position (index 3)
++ * @param {Number} m11 Component in column 1, row 1 position (index 4)
++ * @param {Number} m12 Component in column 1, row 2 position (index 5)
++ * @param {Number} m20 Component in column 2, row 0 position (index 6)
++ * @param {Number} m21 Component in column 2, row 1 position (index 7)
++ * @param {Number} m22 Component in column 2, row 2 position (index 8)
++ * @returns {mat3} A new mat3
++ */
++mat3.fromValues = function(m00, m01, m02, m10, m11, m12, m20, m21, m22) {
++    var out = new glMatrix.ARRAY_TYPE(9);
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m10;
++    out[4] = m11;
++    out[5] = m12;
++    out[6] = m20;
++    out[7] = m21;
++    out[8] = m22;
++    return out;
++};
+ 
+-    //Draw zero lines (need to do this AFTER all grid lines are drawn)
+-    for(var j=0; j<2; ++j) {
+-      var u = (i + 1 + j) % 3
+-      var v = (i + 1 + (j^1)) % 3
+-      if(this.zeroEnable[v]) {
+-        //Check if zero line in bounds
+-        if(bounds[0][v] <= 0 && bounds[1][v] >= 0) {
+-          this._lines.drawZero(u, v, this.bounds, x, this.zeroLineColor[v], this.zeroLineWidth[v]*this.pixelRatio)
+-        }
+-      }
+-    }
+-  }
++/**
++ * Set the components of a mat3 to the given values
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m10 Component in column 1, row 0 position (index 3)
++ * @param {Number} m11 Component in column 1, row 1 position (index 4)
++ * @param {Number} m12 Component in column 1, row 2 position (index 5)
++ * @param {Number} m20 Component in column 2, row 0 position (index 6)
++ * @param {Number} m21 Component in column 2, row 1 position (index 7)
++ * @param {Number} m22 Component in column 2, row 2 position (index 8)
++ * @returns {mat3} out
++ */
++mat3.set = function(out, m00, m01, m02, m10, m11, m12, m20, m21, m22) {
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m10;
++    out[4] = m11;
++    out[5] = m12;
++    out[6] = m20;
++    out[7] = m21;
++    out[8] = m22;
++    return out;
++};
+ 
+-  //Then draw axis lines and tick marks
+-  for(var i=0; i<3; ++i) {
++/**
++ * Set a mat3 to the identity matrix
++ *
++ * @param {mat3} out the receiving matrix
++ * @returns {mat3} out
++ */
++mat3.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 1;
++    out[5] = 0;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
++};
+ 
+-    //Draw axis lines
+-    if(this.lineEnable[i]) {
+-      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].primalOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
+-    }
+-    if(this.lineMirror[i]) {
+-      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].mirrorOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
++/**
++ * Transpose the values of a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.transpose = function(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a01 = a[1], a02 = a[2], a12 = a[5];
++        out[1] = a[3];
++        out[2] = a[6];
++        out[3] = a01;
++        out[5] = a[7];
++        out[6] = a02;
++        out[7] = a12;
++    } else {
++        out[0] = a[0];
++        out[1] = a[3];
++        out[2] = a[6];
++        out[3] = a[1];
++        out[4] = a[4];
++        out[5] = a[7];
++        out[6] = a[2];
++        out[7] = a[5];
++        out[8] = a[8];
+     }
++    
++    return out;
++};
+ 
+-    //Compute minor axes
+-    var primalMinor = copyVec3(PRIMAL_MINOR, lineOffset[i].primalMinor)
+-    var mirrorMinor = copyVec3(MIRROR_MINOR, lineOffset[i].mirrorMinor)
+-    var tickLength  = this.lineTickLength
+-    var op = 0
+-    for(var j=0; j<3; ++j) {
+-      var scaleFactor = pixelScaleF / model[5*j]
+-      primalMinor[j] *= tickLength[j] * scaleFactor
+-      mirrorMinor[j] *= tickLength[j] * scaleFactor
+-    }
++/**
++ * Inverts a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.invert = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
+ 
+-    //Draw axis line ticks
+-    if(this.lineTickEnable[i]) {
+-      this._lines.drawAxisTicks(i, lineOffset[i].primalOffset, primalMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
+-    }
+-    if(this.lineTickMirror[i]) {
+-      this._lines.drawAxisTicks(i, lineOffset[i].mirrorOffset, mirrorMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
+-    }
+-  }
++        b01 = a22 * a11 - a12 * a21,
++        b11 = -a22 * a10 + a12 * a20,
++        b21 = a21 * a10 - a11 * a20,
+ 
+-  //Draw text sprites
+-  this._text.bind(
+-    model,
+-    view,
+-    projection,
+-    this.pixelRatio)
++        // Calculate the determinant
++        det = a00 * b01 + a01 * b11 + a02 * b21;
+ 
+-  for(var i=0; i<3; ++i) {
++    if (!det) { 
++        return null; 
++    }
++    det = 1.0 / det;
+ 
+-    var minor      = lineOffset[i].primalMinor
+-    var offset     = copyVec3(PRIMAL_OFFSET, lineOffset[i].primalOffset)
++    out[0] = b01 * det;
++    out[1] = (-a22 * a01 + a02 * a21) * det;
++    out[2] = (a12 * a01 - a02 * a11) * det;
++    out[3] = b11 * det;
++    out[4] = (a22 * a00 - a02 * a20) * det;
++    out[5] = (-a12 * a00 + a02 * a10) * det;
++    out[6] = b21 * det;
++    out[7] = (-a21 * a00 + a01 * a20) * det;
++    out[8] = (a11 * a00 - a01 * a10) * det;
++    return out;
++};
+ 
+-    for(var j=0; j<3; ++j) {
+-      if(this.lineTickEnable[i]) {
+-        offset[j] += pixelScaleF * minor[j] * Math.max(this.lineTickLength[j], 0)  / model[5*j]
+-      }
+-    }
++/**
++ * Calculates the adjugate of a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the source matrix
++ * @returns {mat3} out
++ */
++mat3.adjoint = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8];
+ 
+-    //Draw tick text
+-    if(this.tickEnable[i]) {
++    out[0] = (a11 * a22 - a12 * a21);
++    out[1] = (a02 * a21 - a01 * a22);
++    out[2] = (a01 * a12 - a02 * a11);
++    out[3] = (a12 * a20 - a10 * a22);
++    out[4] = (a00 * a22 - a02 * a20);
++    out[5] = (a02 * a10 - a00 * a12);
++    out[6] = (a10 * a21 - a11 * a20);
++    out[7] = (a01 * a20 - a00 * a21);
++    out[8] = (a00 * a11 - a01 * a10);
++    return out;
++};
+ 
+-      //Add tick padding
+-      for(var j=0; j<3; ++j) {
+-        offset[j] += pixelScaleF * minor[j] * this.tickPad[j] / model[5*j]
+-      }
++/**
++ * Calculates the determinant of a mat3
++ *
++ * @param {mat3} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat3.determinant = function (a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8];
+ 
+-      //Draw axis
+-      this._text.drawTicks(
+-        i,
+-        this.tickSize[i],
+-        this.tickAngle[i],
+-        offset,
+-        this.tickColor[i])
+-    }
++    return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);
++};
+ 
+-    //Draw labels
+-    if(this.labelEnable[i]) {
++/**
++ * Multiplies two mat3's
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @returns {mat3} out
++ */
++mat3.multiply = function (out, a, b) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
+ 
+-      //Add label padding
+-      for(var j=0; j<3; ++j) {
+-        offset[j] += pixelScaleF * minor[j] * this.labelPad[j] / model[5*j]
+-      }
+-      offset[i] += 0.5 * (bounds[0][i] + bounds[1][i])
++        b00 = b[0], b01 = b[1], b02 = b[2],
++        b10 = b[3], b11 = b[4], b12 = b[5],
++        b20 = b[6], b21 = b[7], b22 = b[8];
+ 
+-      //Draw axis
+-      this._text.drawLabel(
+-        i,
+-        this.labelSize[i],
+-        this.labelAngle[i],
+-        offset,
+-        this.labelColor[i])
+-    }
+-  }
+-}
++    out[0] = b00 * a00 + b01 * a10 + b02 * a20;
++    out[1] = b00 * a01 + b01 * a11 + b02 * a21;
++    out[2] = b00 * a02 + b01 * a12 + b02 * a22;
+ 
+-proto.dispose = function() {
+-  this._text.dispose()
+-  this._lines.dispose()
+-  this._background.dispose()
+-  this._lines = null
+-  this._text = null
+-  this._background = null
+-  this.gl = null
+-}
++    out[3] = b10 * a00 + b11 * a10 + b12 * a20;
++    out[4] = b10 * a01 + b11 * a11 + b12 * a21;
++    out[5] = b10 * a02 + b11 * a12 + b12 * a22;
+ 
+-function createAxes(gl, options) {
+-  var axes = new Axes(gl)
+-  axes.update(options)
+-  return axes
+-}
++    out[6] = b20 * a00 + b21 * a10 + b22 * a20;
++    out[7] = b20 * a01 + b21 * a11 + b22 * a21;
++    out[8] = b20 * a02 + b21 * a12 + b22 * a22;
++    return out;
++};
+ 
+-},{"./lib/background.js":177,"./lib/cube.js":178,"./lib/lines.js":179,"./lib/text.js":181,"./lib/ticks.js":182}],177:[function(require,module,exports){
+-'use strict'
++/**
++ * Alias for {@link mat3.multiply}
++ * @function
++ */
++mat3.mul = mat3.multiply;
+ 
+-module.exports = createBackgroundCube
++/**
++ * Translate a mat3 by the given vector
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to translate
++ * @param {vec2} v vector to translate by
++ * @returns {mat3} out
++ */
++mat3.translate = function(out, a, v) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
++        x = v[0], y = v[1];
+ 
+-var createBuffer = require('gl-buffer')
+-var createVAO    = require('gl-vao')
+-var createShader = require('./shaders').bg
++    out[0] = a00;
++    out[1] = a01;
++    out[2] = a02;
+ 
+-function BackgroundCube(gl, buffer, vao, shader) {
+-  this.gl = gl
+-  this.buffer = buffer
+-  this.vao = vao
+-  this.shader = shader
+-}
++    out[3] = a10;
++    out[4] = a11;
++    out[5] = a12;
+ 
+-var proto = BackgroundCube.prototype
++    out[6] = x * a00 + y * a10 + a20;
++    out[7] = x * a01 + y * a11 + a21;
++    out[8] = x * a02 + y * a12 + a22;
++    return out;
++};
+ 
+-proto.draw = function(model, view, projection, bounds, enable, colors) {
+-  var needsBG = false
+-  for(var i=0; i<3; ++i) {
+-    needsBG = needsBG || enable[i]
+-  }
+-  if(!needsBG) {
+-    return
+-  }
++/**
++ * Rotates a mat3 by the given angle
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat3} out
++ */
++mat3.rotate = function (out, a, rad) {
++    var a00 = a[0], a01 = a[1], a02 = a[2],
++        a10 = a[3], a11 = a[4], a12 = a[5],
++        a20 = a[6], a21 = a[7], a22 = a[8],
+ 
+-  var gl = this.gl
++        s = Math.sin(rad),
++        c = Math.cos(rad);
+ 
+-  gl.enable(gl.POLYGON_OFFSET_FILL)
+-  gl.polygonOffset(1, 2)
++    out[0] = c * a00 + s * a10;
++    out[1] = c * a01 + s * a11;
++    out[2] = c * a02 + s * a12;
+ 
+-  this.shader.bind()
+-  this.shader.uniforms = {
+-    model: model,
+-    view: view,
+-    projection: projection,
+-    bounds: bounds,
+-    enable: enable,
+-    colors: colors
+-  }
+-  this.vao.bind()
+-  this.vao.draw(this.gl.TRIANGLES, 36)
++    out[3] = c * a10 - s * a00;
++    out[4] = c * a11 - s * a01;
++    out[5] = c * a12 - s * a02;
+ 
+-  gl.disable(gl.POLYGON_OFFSET_FILL)
+-}
++    out[6] = a20;
++    out[7] = a21;
++    out[8] = a22;
++    return out;
++};
+ 
+-proto.dispose = function() {
+-  this.vao.dispose()
+-  this.buffer.dispose()
+-  this.shader.dispose()
+-}
++/**
++ * Scales the mat3 by the dimensions in the given vec2
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to rotate
++ * @param {vec2} v the vec2 to scale the matrix by
++ * @returns {mat3} out
++ **/
++mat3.scale = function(out, a, v) {
++    var x = v[0], y = v[1];
+ 
+-function createBackgroundCube(gl) {
+-  //Create cube vertices
+-  var vertices = []
+-  var indices  = []
+-  var ptr = 0
+-  for(var d=0; d<3; ++d) {
+-    var u = (d+1) % 3
+-    var v = (d+2) % 3
+-    var x = [0,0,0]
+-    var c = [0,0,0]
+-    for(var s=-1; s<=1; s+=2) {
+-      indices.push(ptr,   ptr+2, ptr+1,
+-                   ptr+1, ptr+2, ptr+3)
+-      x[d] = s
+-      c[d] = s
+-      for(var i=-1; i<=1; i+=2) {
+-        x[u] = i
+-        for(var j=-1; j<=1; j+=2) {
+-          x[v] = j
+-          vertices.push(x[0], x[1], x[2],
+-                        c[0], c[1], c[2])
+-          ptr += 1
+-        }
+-      }
+-      //Swap u and v
+-      var tt = u
+-      u = v
+-      v = tt
+-    }
+-  }
++    out[0] = x * a[0];
++    out[1] = x * a[1];
++    out[2] = x * a[2];
+ 
+-  //Allocate buffer and vertex array
+-  var buffer = createBuffer(gl, new Float32Array(vertices))
+-  var elements = createBuffer(gl, new Uint16Array(indices), gl.ELEMENT_ARRAY_BUFFER)
+-  var vao = createVAO(gl, [
+-      {
+-        buffer: buffer,
+-        type: gl.FLOAT,
+-        size: 3,
+-        offset: 0,
+-        stride: 24
+-      },
+-      {
+-        buffer: buffer,
+-        type: gl.FLOAT,
+-        size: 3,
+-        offset: 12,
+-        stride: 24
+-      }
+-    ], elements)
++    out[3] = y * a[3];
++    out[4] = y * a[4];
++    out[5] = y * a[5];
+ 
+-  //Create shader object
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.normal.location = 1
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    return out;
++};
+ 
+-  return new BackgroundCube(gl, buffer, vao, shader)
++/**
++ * Creates a matrix from a vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat3.identity(dest);
++ *     mat3.translate(dest, dest, vec);
++ *
++ * @param {mat3} out mat3 receiving operation result
++ * @param {vec2} v Translation vector
++ * @returns {mat3} out
++ */
++mat3.fromTranslation = function(out, v) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 1;
++    out[5] = 0;
++    out[6] = v[0];
++    out[7] = v[1];
++    out[8] = 1;
++    return out;
+ }
+ 
+-},{"./shaders":180,"gl-buffer":124,"gl-vao":232}],178:[function(require,module,exports){
+-"use strict"
++/**
++ * Creates a matrix from a given angle
++ * This is equivalent to (but much faster than):
++ *
++ *     mat3.identity(dest);
++ *     mat3.rotate(dest, dest, rad);
++ *
++ * @param {mat3} out mat3 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat3} out
++ */
++mat3.fromRotation = function(out, rad) {
++    var s = Math.sin(rad), c = Math.cos(rad);
+ 
+-module.exports = getCubeEdges
++    out[0] = c;
++    out[1] = s;
++    out[2] = 0;
+ 
+-var bits      = require('bit-twiddle')
+-var multiply  = require('gl-mat4/multiply')
+-var invert    = require('gl-mat4/invert')
+-var splitPoly = require('split-polygon')
+-var orient    = require('robust-orientation')
++    out[3] = -s;
++    out[4] = c;
++    out[5] = 0;
+ 
+-var mvp        = new Array(16)
+-var imvp       = new Array(16)
+-var pCubeVerts = new Array(8)
+-var cubeVerts  = new Array(8)
+-var x          = new Array(3)
+-var zero3      = [0,0,0]
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
++}
+ 
+-;(function() {
+-  for(var i=0; i<8; ++i) {
+-    pCubeVerts[i] =[1,1,1,1]
+-    cubeVerts[i] = [1,1,1]
+-  }
+-})()
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat3.identity(dest);
++ *     mat3.scale(dest, dest, vec);
++ *
++ * @param {mat3} out mat3 receiving operation result
++ * @param {vec2} v Scaling vector
++ * @returns {mat3} out
++ */
++mat3.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
+ 
++    out[3] = 0;
++    out[4] = v[1];
++    out[5] = 0;
+ 
+-function transformHg(result, x, mat) {
+-  for(var i=0; i<4; ++i) {
+-    result[i] = mat[12+i]
+-    for(var j=0; j<3; ++j) {
+-      result[i] += x[j]*mat[4*j+i]
+-    }
+-  }
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 1;
++    return out;
+ }
+ 
+-var FRUSTUM_PLANES = [
+-  [ 0, 0, 1, 0, 0],
+-  [ 0, 0,-1, 1, 0],
+-  [ 0,-1, 0, 1, 0],
+-  [ 0, 1, 0, 1, 0],
+-  [-1, 0, 0, 1, 0],
+-  [ 1, 0, 0, 1, 0]
+-]
++/**
++ * Copies the values from a mat2d into a mat3
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat2d} a the matrix to copy
++ * @returns {mat3} out
++ **/
++mat3.fromMat2d = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = 0;
+ 
+-function polygonArea(p) {
+-  for(var i=0; i<FRUSTUM_PLANES.length; ++i) {
+-    p = splitPoly.positive(p, FRUSTUM_PLANES[i])
+-    if(p.length < 3) {
+-      return 0
+-    }
+-  }
++    out[3] = a[2];
++    out[4] = a[3];
++    out[5] = 0;
+ 
+-  var base = p[0]
+-  var ax = base[0] / base[3]
+-  var ay = base[1] / base[3]
+-  var area = 0.0
+-  for(var i=1; i+1<p.length; ++i) {
+-    var b = p[i]
+-    var c = p[i+1]
++    out[6] = a[4];
++    out[7] = a[5];
++    out[8] = 1;
++    return out;
++};
+ 
+-    var bx = b[0]/b[3]
+-    var by = b[1]/b[3]
+-    var cx = c[0]/c[3]
+-    var cy = c[1]/c[3]
++/**
++* Calculates a 3x3 matrix from the given quaternion
++*
++* @param {mat3} out mat3 receiving operation result
++* @param {quat} q Quaternion to create matrix from
++*
++* @returns {mat3} out
++*/
++mat3.fromQuat = function (out, q) {
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-    var ux = bx - ax
+-    var uy = by - ay
++        xx = x * x2,
++        yx = y * x2,
++        yy = y * y2,
++        zx = z * x2,
++        zy = z * y2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-    var vx = cx - ax
+-    var vy = cy - ay
++    out[0] = 1 - yy - zz;
++    out[3] = yx - wz;
++    out[6] = zx + wy;
+ 
+-    area += Math.abs(ux * vy - uy * vx)
+-  }
++    out[1] = yx + wz;
++    out[4] = 1 - xx - zz;
++    out[7] = zy - wx;
+ 
+-  return area
+-}
++    out[2] = zx - wy;
++    out[5] = zy + wx;
++    out[8] = 1 - xx - yy;
+ 
+-var CUBE_EDGES = [1,1,1]
+-var CUBE_AXIS  = [0,0,0]
+-var CUBE_RESULT = {
+-  cubeEdges: CUBE_EDGES,
+-  axis: CUBE_AXIS
+-}
++    return out;
++};
+ 
+-function getCubeEdges(model, view, projection, bounds) {
++/**
++* Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix
++*
++* @param {mat3} out mat3 receiving operation result
++* @param {mat4} a Mat4 to derive the normal matrix from
++*
++* @returns {mat3} out
++*/
++mat3.normalFromMat4 = function (out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-  //Concatenate matrices
+-  multiply(mvp, view, model)
+-  multiply(mvp, projection, mvp)
+-  
+-  //First project cube vertices
+-  var ptr = 0
+-  for(var i=0; i<2; ++i) {
+-    x[2] = bounds[i][2]
+-    for(var j=0; j<2; ++j) {
+-      x[1] = bounds[j][1]
+-      for(var k=0; k<2; ++k) {
+-        x[0] = bounds[k][0]
+-        transformHg(pCubeVerts[ptr], x, mvp)
+-        ptr += 1
+-      }
+-    }
+-  }
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32,
+ 
+-  //Classify camera against cube faces
+-  var closest = -1
++        // Calculate the determinant
++        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+ 
+-  for(var i=0; i<8; ++i) {
+-    var w = pCubeVerts[i][3]
+-    for(var l=0; l<3; ++l) {
+-      cubeVerts[i][l] = pCubeVerts[i][l] / w
++    if (!det) { 
++        return null; 
+     }
+-    if(w < 0) {
+-      if(closest < 0) {
+-        closest = i
+-      } else if(cubeVerts[i][2] < cubeVerts[closest][2]) {
+-        closest = i
+-      }
+-    }    
+-  }
++    det = 1.0 / det;
+ 
+-  if(closest < 0) {
+-    closest = 0
+-    for(var d=0; d<3; ++d) {
+-      var u = (d+2) % 3
+-      var v = (d+1) % 3
+-      var o0 = -1
+-      var o1 = -1
+-      for(var s=0; s<2; ++s) {
+-        var f0 = (s<<d)
+-        var f1 = f0 + (s << u) + ((1-s) << v)
+-        var f2 = f0 + ((1-s) << u) + (s << v)
+-        if(orient(cubeVerts[f0], cubeVerts[f1], cubeVerts[f2], zero3) < 0) {
+-          continue
+-        }
+-        if(s) {
+-          o0 = 1
+-        } else {
+-          o1 = 1
+-        }
+-      }
+-      if(o0 < 0 || o1 < 0) {
+-        if(o1 > o0) {
+-          closest |= 1<<d
+-        }
+-        continue
+-      } 
+-      for(var s=0; s<2; ++s) {
+-        var f0 = (s<<d)
+-        var f1 = f0 + (s << u) + ((1-s) << v)
+-        var f2 = f0 + ((1-s) << u) + (s << v)    
+-        var o = polygonArea([
+-            pCubeVerts[f0], 
+-            pCubeVerts[f1], 
+-            pCubeVerts[f2], 
+-            pCubeVerts[f0+(1<<u)+(1<<v)]])
+-        if(s) {
+-          o0 = o
+-        } else {
+-          o1 = o
+-        }
+-      }
+-      if(o1 > o0) {
+-        closest |= 1<<d
+-        continue
+-      }
+-    }
+-  }
++    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
++    out[1] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
++    out[2] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+ 
+-  var farthest = 7^closest
++    out[3] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
++    out[4] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
++    out[5] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+ 
+-  //Find lowest vertex which is not closest closest
+-  var bottom = -1
+-  for(var i=0; i<8; ++i) {
+-    if(i === closest || i === farthest) {
+-      continue
+-    }
+-    if(bottom < 0) {
+-      bottom = i
+-    } else if(cubeVerts[bottom][1] > cubeVerts[i][1]) {
+-      bottom = i
+-    }
+-  }
++    out[6] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
++    out[7] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
++    out[8] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+ 
+-  //Find left/right neighbors of bottom vertex
+-  var left = -1
+-  for(var i=0; i<3; ++i) {
+-    var idx = bottom ^ (1<<i)
+-    if(idx === closest || idx === farthest) {
+-      continue
+-    }
+-    if(left < 0) {
+-      left = idx
+-    }
+-    var v = cubeVerts[idx]
+-    if(v[0] < cubeVerts[left][0]) {
+-      left = idx
+-    }
+-  }
+-  var right = -1
+-  for(var i=0; i<3; ++i) {
+-    var idx = bottom ^ (1<<i)
+-    if(idx === closest || idx === farthest || idx === left) {
+-      continue
+-    }
+-    if(right < 0) {
+-      right = idx
+-    }
+-    var v = cubeVerts[idx]
+-    if(v[0] > cubeVerts[right][0]) {
+-      right = idx
+-    }
+-  }
++    return out;
++};
+ 
+-  //Determine edge axis coordinates
+-  var cubeEdges = CUBE_EDGES
+-  cubeEdges[0] = cubeEdges[1] = cubeEdges[2] = 0
+-  cubeEdges[bits.log2(left^bottom)] = bottom&left
+-  cubeEdges[bits.log2(bottom^right)] = bottom&right
+-  var top = right ^ 7
+-  if(top === closest || top === farthest) {
+-    top = left ^ 7
+-    cubeEdges[bits.log2(right^top)] = top&right
+-  } else {
+-    cubeEdges[bits.log2(left^top)] = top&left
+-  }
++/**
++ * Returns a string representation of a mat3
++ *
++ * @param {mat3} mat matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat3.str = function (a) {
++    return 'mat3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
++                    a[3] + ', ' + a[4] + ', ' + a[5] + ', ' + 
++                    a[6] + ', ' + a[7] + ', ' + a[8] + ')';
++};
+ 
+-  //Determine visible faces
+-  var axis = CUBE_AXIS
+-  var cutCorner = closest
+-  for(var d=0; d<3; ++d) {
+-    if(cutCorner & (1<<d)) {
+-      axis[d] = -1
+-    } else {
+-      axis[d] = 1
+-    }
+-  }
++/**
++ * Returns Frobenius norm of a mat3
++ *
++ * @param {mat3} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
++ */
++mat3.frob = function (a) {
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2)))
++};
+ 
+-  //Return result
+-  return CUBE_RESULT
+-}
+-},{"bit-twiddle":51,"gl-mat4/invert":143,"gl-mat4/multiply":145,"robust-orientation":439,"split-polygon":184}],179:[function(require,module,exports){
+-'use strict'
++/**
++ * Adds two mat3's
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @returns {mat3} out
++ */
++mat3.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    out[4] = a[4] + b[4];
++    out[5] = a[5] + b[5];
++    out[6] = a[6] + b[6];
++    out[7] = a[7] + b[7];
++    out[8] = a[8] + b[8];
++    return out;
++};
+ 
+-module.exports    = createLines
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @returns {mat3} out
++ */
++mat3.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    out[4] = a[4] - b[4];
++    out[5] = a[5] - b[5];
++    out[6] = a[6] - b[6];
++    out[7] = a[7] - b[7];
++    out[8] = a[8] - b[8];
++    return out;
++};
+ 
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var createShader  = require('./shaders').line
++/**
++ * Alias for {@link mat3.subtract}
++ * @function
++ */
++mat3.sub = mat3.subtract;
+ 
+-var MAJOR_AXIS = [0,0,0]
+-var MINOR_AXIS = [0,0,0]
+-var SCREEN_AXIS = [0,0,0]
+-var OFFSET_VEC = [0,0,0]
+-var SHAPE = [1,1]
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat3} out the receiving matrix
++ * @param {mat3} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat3} out
++ */
++mat3.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    out[4] = a[4] * b;
++    out[5] = a[5] * b;
++    out[6] = a[6] * b;
++    out[7] = a[7] * b;
++    out[8] = a[8] * b;
++    return out;
++};
++
++/**
++ * Adds two mat3's after multiplying each element of the second operand by a scalar value.
++ *
++ * @param {mat3} out the receiving vector
++ * @param {mat3} a the first operand
++ * @param {mat3} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat3} out
++ */
++mat3.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    out[4] = a[4] + (b[4] * scale);
++    out[5] = a[5] + (b[5] * scale);
++    out[6] = a[6] + (b[6] * scale);
++    out[7] = a[7] + (b[7] * scale);
++    out[8] = a[8] + (b[8] * scale);
++    return out;
++};
++
++/*
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {mat3} a The first matrix.
++ * @param {mat3} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat3.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && 
++           a[3] === b[3] && a[4] === b[4] && a[5] === b[5] &&
++           a[6] === b[6] && a[7] === b[7] && a[8] === b[8];
++};
++
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat3} a The first matrix.
++ * @param {mat3} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat3.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5], a6 = a[6], a7 = a[7], a8 = a[8];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5], b6 = a[6], b7 = b[7], b8 = b[8];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
++            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
++            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
++            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
++            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
++            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)));
++};
++
++
++module.exports = mat3;
++
++},{"./common.js":155}],159:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-function zeroVec(a) {
+-  a[0] = a[1] = a[2] = 0
+-  return a
+-}
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-function copyVec(a,b) {
+-  a[0] = b[0]
+-  a[1] = b[1]
+-  a[2] = b[2]
+-  return a
+-}
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-function Lines(gl, vertBuffer, vao, shader, tickCount, tickOffset, gridCount, gridOffset) {
+-  this.gl         = gl
+-  this.vertBuffer = vertBuffer
+-  this.vao        = vao
+-  this.shader     = shader
+-  this.tickCount  = tickCount
+-  this.tickOffset = tickOffset
+-  this.gridCount  = gridCount
+-  this.gridOffset = gridOffset
+-}
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-var proto = Lines.prototype
++var glMatrix = require("./common.js");
+ 
+-proto.bind = function(model, view, projection) {
+-  this.shader.bind()
+-  this.shader.uniforms.model = model
+-  this.shader.uniforms.view = view
+-  this.shader.uniforms.projection = projection
++/**
++ * @class 4x4 Matrix
++ * @name mat4
++ */
++var mat4 = {
++  scalar: {},
++  SIMD: {},
++};
+ 
+-  SHAPE[0] = this.gl.drawingBufferWidth
+-  SHAPE[1] = this.gl.drawingBufferHeight
++/**
++ * Creates a new identity mat4
++ *
++ * @returns {mat4} a new 4x4 matrix
++ */
++mat4.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(16);
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
+ 
+-  this.shader.uniforms.screenShape = SHAPE
+-  this.vao.bind()
+-}
++/**
++ * Creates a new mat4 initialized with values from an existing matrix
++ *
++ * @param {mat4} a matrix to clone
++ * @returns {mat4} a new 4x4 matrix
++ */
++mat4.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(16);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    out[9] = a[9];
++    out[10] = a[10];
++    out[11] = a[11];
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-proto.drawAxisLine = function(j, bounds, offset, color, lineWidth) {
+-  var minorAxis = zeroVec(MINOR_AXIS)
+-  this.shader.uniforms.majorAxis = MINOR_AXIS
++/**
++ * Copy the values from one mat4 to another
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    out[4] = a[4];
++    out[5] = a[5];
++    out[6] = a[6];
++    out[7] = a[7];
++    out[8] = a[8];
++    out[9] = a[9];
++    out[10] = a[10];
++    out[11] = a[11];
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-  minorAxis[j] = bounds[1][j] - bounds[0][j]
+-  this.shader.uniforms.minorAxis = minorAxis
++/**
++ * Create a new mat4 with the given values
++ *
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m03 Component in column 0, row 3 position (index 3)
++ * @param {Number} m10 Component in column 1, row 0 position (index 4)
++ * @param {Number} m11 Component in column 1, row 1 position (index 5)
++ * @param {Number} m12 Component in column 1, row 2 position (index 6)
++ * @param {Number} m13 Component in column 1, row 3 position (index 7)
++ * @param {Number} m20 Component in column 2, row 0 position (index 8)
++ * @param {Number} m21 Component in column 2, row 1 position (index 9)
++ * @param {Number} m22 Component in column 2, row 2 position (index 10)
++ * @param {Number} m23 Component in column 2, row 3 position (index 11)
++ * @param {Number} m30 Component in column 3, row 0 position (index 12)
++ * @param {Number} m31 Component in column 3, row 1 position (index 13)
++ * @param {Number} m32 Component in column 3, row 2 position (index 14)
++ * @param {Number} m33 Component in column 3, row 3 position (index 15)
++ * @returns {mat4} A new mat4
++ */
++mat4.fromValues = function(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
++    var out = new glMatrix.ARRAY_TYPE(16);
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m03;
++    out[4] = m10;
++    out[5] = m11;
++    out[6] = m12;
++    out[7] = m13;
++    out[8] = m20;
++    out[9] = m21;
++    out[10] = m22;
++    out[11] = m23;
++    out[12] = m30;
++    out[13] = m31;
++    out[14] = m32;
++    out[15] = m33;
++    return out;
++};
+ 
+-  var noffset = copyVec(OFFSET_VEC, offset)
+-  noffset[j] += bounds[0][j]
+-  this.shader.uniforms.offset = noffset
++/**
++ * Set the components of a mat4 to the given values
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {Number} m00 Component in column 0, row 0 position (index 0)
++ * @param {Number} m01 Component in column 0, row 1 position (index 1)
++ * @param {Number} m02 Component in column 0, row 2 position (index 2)
++ * @param {Number} m03 Component in column 0, row 3 position (index 3)
++ * @param {Number} m10 Component in column 1, row 0 position (index 4)
++ * @param {Number} m11 Component in column 1, row 1 position (index 5)
++ * @param {Number} m12 Component in column 1, row 2 position (index 6)
++ * @param {Number} m13 Component in column 1, row 3 position (index 7)
++ * @param {Number} m20 Component in column 2, row 0 position (index 8)
++ * @param {Number} m21 Component in column 2, row 1 position (index 9)
++ * @param {Number} m22 Component in column 2, row 2 position (index 10)
++ * @param {Number} m23 Component in column 2, row 3 position (index 11)
++ * @param {Number} m30 Component in column 3, row 0 position (index 12)
++ * @param {Number} m31 Component in column 3, row 1 position (index 13)
++ * @param {Number} m32 Component in column 3, row 2 position (index 14)
++ * @param {Number} m33 Component in column 3, row 3 position (index 15)
++ * @returns {mat4} out
++ */
++mat4.set = function(out, m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
++    out[0] = m00;
++    out[1] = m01;
++    out[2] = m02;
++    out[3] = m03;
++    out[4] = m10;
++    out[5] = m11;
++    out[6] = m12;
++    out[7] = m13;
++    out[8] = m20;
++    out[9] = m21;
++    out[10] = m22;
++    out[11] = m23;
++    out[12] = m30;
++    out[13] = m31;
++    out[14] = m32;
++    out[15] = m33;
++    return out;
++};
+ 
+-  this.shader.uniforms.lineWidth = lineWidth
+ 
+-  this.shader.uniforms.color = color
++/**
++ * Set a mat4 to the identity matrix
++ *
++ * @param {mat4} out the receiving matrix
++ * @returns {mat4} out
++ */
++mat4.identity = function(out) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++};
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[(j+2)%3] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.vao.draw(this.gl.TRIANGLES, 6)
++/**
++ * Transpose the values of a mat4 not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.scalar.transpose = function(out, a) {
++    // If we are transposing ourselves we can skip a few steps but have to cache some values
++    if (out === a) {
++        var a01 = a[1], a02 = a[2], a03 = a[3],
++            a12 = a[6], a13 = a[7],
++            a23 = a[11];
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[(j+1)%3] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.vao.draw(this.gl.TRIANGLES, 6)
+-}
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a01;
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a02;
++        out[9] = a12;
++        out[11] = a[14];
++        out[12] = a03;
++        out[13] = a13;
++        out[14] = a23;
++    } else {
++        out[0] = a[0];
++        out[1] = a[4];
++        out[2] = a[8];
++        out[3] = a[12];
++        out[4] = a[1];
++        out[5] = a[5];
++        out[6] = a[9];
++        out[7] = a[13];
++        out[8] = a[2];
++        out[9] = a[6];
++        out[10] = a[10];
++        out[11] = a[14];
++        out[12] = a[3];
++        out[13] = a[7];
++        out[14] = a[11];
++        out[15] = a[15];
++    }
+ 
+-proto.drawAxisTicks = function(j, offset, minorAxis, color, lineWidth) {
+-  if(!this.tickCount[j]) {
+-    return
+-  }
++    return out;
++};
+ 
+-  var majorAxis = zeroVec(MAJOR_AXIS)
+-  majorAxis[j]  = 1
+-  this.shader.uniforms.majorAxis = majorAxis
+-  this.shader.uniforms.offset    = offset
+-  this.shader.uniforms.minorAxis = minorAxis
+-  this.shader.uniforms.color     = color
+-  this.shader.uniforms.lineWidth = lineWidth
++/**
++ * Transpose the values of a mat4 using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.SIMD.transpose = function(out, a) {
++    var a0, a1, a2, a3,
++        tmp01, tmp23,
++        out0, out1, out2, out3;
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[j] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.vao.draw(this.gl.TRIANGLES, this.tickCount[j], this.tickOffset[j])
+-}
++    a0 = SIMD.Float32x4.load(a, 0);
++    a1 = SIMD.Float32x4.load(a, 4);
++    a2 = SIMD.Float32x4.load(a, 8);
++    a3 = SIMD.Float32x4.load(a, 12);
+ 
++    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
++    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
++    out0  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
++    out1  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
++    SIMD.Float32x4.store(out, 0,  out0);
++    SIMD.Float32x4.store(out, 4,  out1);
+ 
+-proto.drawGrid = function(i, j, bounds, offset, color, lineWidth) {
+-  if(!this.gridCount[i]) {
+-    return
+-  }
++    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
++    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
++    out2  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
++    out3  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
++    SIMD.Float32x4.store(out, 8,  out2);
++    SIMD.Float32x4.store(out, 12, out3);
+ 
+-  var minorAxis = zeroVec(MINOR_AXIS)
+-  minorAxis[j]  = bounds[1][j] - bounds[0][j]
+-  this.shader.uniforms.minorAxis = minorAxis
++    return out;
++};
+ 
+-  var noffset = copyVec(OFFSET_VEC, offset)
+-  noffset[j] += bounds[0][j]
+-  this.shader.uniforms.offset = noffset
++/**
++ * Transpse a mat4 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.transpose = glMatrix.USE_SIMD ? mat4.SIMD.transpose : mat4.scalar.transpose;
+ 
+-  var majorAxis = zeroVec(MAJOR_AXIS)
+-  majorAxis[i]  = 1
+-  this.shader.uniforms.majorAxis = majorAxis
++/**
++ * Inverts a mat4 not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.scalar.invert = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[i] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.shader.uniforms.lineWidth = lineWidth
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32,
+ 
+-  this.shader.uniforms.color = color
+-  this.vao.draw(this.gl.TRIANGLES, this.gridCount[i], this.gridOffset[i])
+-}
++        // Calculate the determinant
++        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+ 
+-proto.drawZero = function(j, i, bounds, offset, color, lineWidth) {
+-  var minorAxis = zeroVec(MINOR_AXIS)
+-  this.shader.uniforms.majorAxis = minorAxis
++    if (!det) {
++        return null;
++    }
++    det = 1.0 / det;
+ 
+-  minorAxis[j] = bounds[1][j] - bounds[0][j]
+-  this.shader.uniforms.minorAxis = minorAxis
++    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
++    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
++    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
++    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
++    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
++    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
++    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
++    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
++    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
++    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
++    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
++    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
++    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
++    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
++    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
++    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
+ 
+-  var noffset = copyVec(OFFSET_VEC, offset)
+-  noffset[j] += bounds[0][j]
+-  this.shader.uniforms.offset = noffset
++    return out;
++};
+ 
+-  var screenAxis = zeroVec(SCREEN_AXIS)
+-  screenAxis[i] = 1
+-  this.shader.uniforms.screenAxis = screenAxis
+-  this.shader.uniforms.lineWidth = lineWidth
++/**
++ * Inverts a mat4 using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.SIMD.invert = function(out, a) {
++  var row0, row1, row2, row3,
++      tmp1,
++      minor0, minor1, minor2, minor3,
++      det,
++      a0 = SIMD.Float32x4.load(a, 0),
++      a1 = SIMD.Float32x4.load(a, 4),
++      a2 = SIMD.Float32x4.load(a, 8),
++      a3 = SIMD.Float32x4.load(a, 12);
+ 
+-  this.shader.uniforms.color = color
+-  this.vao.draw(this.gl.TRIANGLES, 6)
+-}
++  // Compute matrix adjugate
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
++  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
++  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
++  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
++  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
++  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
++  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
+ 
+-proto.dispose = function() {
+-  this.vao.dispose()
+-  this.vertBuffer.dispose()
+-  this.shader.dispose()
+-}
++  tmp1   = SIMD.Float32x4.mul(row2, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.mul(row1, tmp1);
++  minor1 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
++  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
++  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
+ 
+-function createLines(gl, bounds, ticks) {
+-  var vertices    = []
+-  var tickOffset  = [0,0,0]
+-  var tickCount   = [0,0,0]
++  tmp1   = SIMD.Float32x4.mul(row1, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
++  minor3 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
++  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
+ 
+-  //Create grid lines for each axis/direction
+-  var gridOffset = [0,0,0]
+-  var gridCount  = [0,0,0]
++  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
++  minor2 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
++  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
+ 
+-  //Add zero line
+-  vertices.push(
+-    0,0,1,   0,1,1,   0,0,-1,
+-    0,0,-1,  0,1,1,   0,1,-1)
++  tmp1   = SIMD.Float32x4.mul(row0, row1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
+ 
+-  for(var i=0; i<3; ++i) {
+-    //Axis tick marks
+-    var start = ((vertices.length / 3)|0)
+-    for(var j=0; j<ticks[i].length; ++j) {
+-      var x = +ticks[i][j].x
+-      vertices.push(
+-        x,0,1,   x,1,1,   x,0,-1,
+-        x,0,-1,  x,1,1,   x,1,-1)
+-    }
+-    var end = ((vertices.length / 3)|0)
+-    tickOffset[i] = start
+-    tickCount[i]  = end - start
++  tmp1   = SIMD.Float32x4.mul(row0, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
++  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
+ 
+-    //Grid lines
+-    var start = ((vertices.length / 3)|0)
+-    for(var k=0; k<ticks[i].length; ++k) {
+-      var x = +ticks[i][k].x
+-      vertices.push(
+-        x,0,1,   x,1,1,   x,0,-1,
+-        x,0,-1,  x,1,1,   x,1,-1)
+-    }
+-    var end = ((vertices.length / 3)|0)
+-    gridOffset[i] = start
+-    gridCount[i]  = end - start
++  tmp1   = SIMD.Float32x4.mul(row0, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
++
++  // Compute matrix determinant
++  det   = SIMD.Float32x4.mul(row0, minor0);
++  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 2, 3, 0, 1), det);
++  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 1, 0, 3, 2), det);
++  tmp1  = SIMD.Float32x4.reciprocalApproximation(det);
++  det   = SIMD.Float32x4.sub(
++               SIMD.Float32x4.add(tmp1, tmp1),
++               SIMD.Float32x4.mul(det, SIMD.Float32x4.mul(tmp1, tmp1)));
++  det   = SIMD.Float32x4.swizzle(det, 0, 0, 0, 0);
++  if (!det) {
++      return null;
+   }
+ 
+-  //Create cube VAO
+-  var vertBuf = createBuffer(gl, new Float32Array(vertices))
+-  var vao = createVAO(gl, [
+-    { "buffer": vertBuf,
+-      "type": gl.FLOAT,
+-      "size": 3,
+-      "stride": 0,
+-      "offset": 0
+-    }
+-  ])
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  return new Lines(gl, vertBuf, vao, shader, tickCount, tickOffset, gridCount, gridOffset)
++  // Compute matrix inverse
++  SIMD.Float32x4.store(out, 0,  SIMD.Float32x4.mul(det, minor0));
++  SIMD.Float32x4.store(out, 4,  SIMD.Float32x4.mul(det, minor1));
++  SIMD.Float32x4.store(out, 8,  SIMD.Float32x4.mul(det, minor2));
++  SIMD.Float32x4.store(out, 12, SIMD.Float32x4.mul(det, minor3));
++  return out;
+ }
+ 
+-},{"./shaders":180,"gl-buffer":124,"gl-vao":232}],180:[function(require,module,exports){
+-'use strict'
++/**
++ * Inverts a mat4 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.invert = glMatrix.USE_SIMD ? mat4.SIMD.invert : mat4.scalar.invert;
+ 
++/**
++ * Calculates the adjugate of a mat4 not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.scalar.adjoint = function(out, a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+ 
+-var createShader = require('gl-shader')
++    out[0]  =  (a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22));
++    out[1]  = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));
++    out[2]  =  (a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12));
++    out[3]  = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));
++    out[4]  = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));
++    out[5]  =  (a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22));
++    out[6]  = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));
++    out[7]  =  (a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12));
++    out[8]  =  (a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21));
++    out[9]  = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));
++    out[10] =  (a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11));
++    out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));
++    out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));
++    out[13] =  (a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21));
++    out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));
++    out[15] =  (a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11));
++    return out;
++};
+ 
+-var lineVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, majorAxis, minorAxis, screenAxis;\nuniform float lineWidth;\nuniform vec2 screenShape;\n\nvec3 project(vec3 p) {\n  vec4 pp = projection * view * model * vec4(p, 1.0);\n  return pp.xyz / max(pp.w, 0.0001);\n}\n\nvoid main() {\n  vec3 major = position.x * majorAxis;\n  vec3 minor = position.y * minorAxis;\n\n  vec3 vPosition = major + minor + offset;\n  vec3 pPosition = project(vPosition);\n  vec3 offset = project(vPosition + screenAxis * position.z);\n\n  vec2 screen = normalize((offset - pPosition).xy * screenShape) / screenShape;\n\n  gl_Position = vec4(pPosition + vec3(0.5 * screen * lineWidth, 0), 1.0);\n}\n"
+-var lineFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
+-exports.line = function(gl) {
+-  return createShader(gl, lineVert, lineFrag, null, [
+-    {name: 'position', type: 'vec3'}
+-  ])
+-}
++/**
++ * Calculates the adjugate of a mat4 using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++mat4.SIMD.adjoint = function(out, a) {
++  var a0, a1, a2, a3;
++  var row0, row1, row2, row3;
++  var tmp1;
++  var minor0, minor1, minor2, minor3;
+ 
+-var textVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, axis;\nuniform float scale, angle, pixelScale;\nuniform vec2 resolution;\n\nvoid main() {  \n  //Compute plane offset\n  vec2 planeCoord = position.xy * pixelScale;\n  mat2 planeXform = scale * mat2(cos(angle), sin(angle),\n                                -sin(angle), cos(angle));\n  vec2 viewOffset = 2.0 * planeXform * planeCoord / resolution;\n\n  //Compute world offset\n  float axisDistance = position.z;\n  vec3 dataPosition = axisDistance * axis + offset;\n  vec4 worldPosition = model * vec4(dataPosition, 1);\n  \n  //Compute clip position\n  vec4 viewPosition = view * worldPosition;\n  vec4 clipPosition = projection * viewPosition;\n  clipPosition /= clipPosition.w;\n\n  //Apply text offset in clip coordinates\n  clipPosition += vec4(viewOffset, 0, 0);\n\n  //Done\n  gl_Position = clipPosition;\n}"
+-var textFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
+-exports.text = function(gl) {
+-  return createShader(gl, textVert, textFrag, null, [
+-    {name: 'position', type: 'vec3'}
+-  ])
+-}
++  var a0 = SIMD.Float32x4.load(a, 0);
++  var a1 = SIMD.Float32x4.load(a, 4);
++  var a2 = SIMD.Float32x4.load(a, 8);
++  var a3 = SIMD.Float32x4.load(a, 12);
+ 
+-var bgVert = "#define GLSLIFY 1\nattribute vec3 position;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection;\nuniform vec3 enable;\nuniform vec3 bounds[2];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  if(dot(normal, enable) > 0.0) {\n    vec3 nPosition = mix(bounds[0], bounds[1], 0.5 * (position + 1.0));\n    gl_Position = projection * view * model * vec4(nPosition, 1.0);\n  } else {\n    gl_Position = vec4(0,0,0,0);\n  }\n  colorChannel = abs(normal);\n}"
+-var bgFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 colors[3];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  gl_FragColor = colorChannel.x * colors[0] + \n                 colorChannel.y * colors[1] +\n                 colorChannel.z * colors[2];\n}"
+-exports.bg = function(gl) {
+-  return createShader(gl, bgVert, bgFrag, null, [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'}
+-  ])
+-}
++  // Transpose the source matrix.  Sort of.  Not a true transpose operation
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
++  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
++  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
++  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
+ 
+-},{"gl-shader":203}],181:[function(require,module,exports){
+-(function (process){
+-"use strict"
++  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
++  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
++  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
++  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
+ 
+-module.exports = createTextSprites
++  tmp1   = SIMD.Float32x4.mul(row2, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.mul(row1, tmp1);
++  minor1 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
++  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
++  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
+ 
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var vectorizeText = require('vectorize-text')
+-var createShader  = require('./shaders').text
++  tmp1   = SIMD.Float32x4.mul(row1, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
++  minor3 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
++  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
+ 
+-var globals = window || process.global || {}
+-var __TEXT_CACHE  = globals.__TEXT_CACHE || {}
+-globals.__TEXT_CACHE = {}
++  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
++  minor2 = SIMD.Float32x4.mul(row0, tmp1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
++  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
+ 
+-//Vertex buffer format for text is:
+-//
+-/// [x,y,z] = Spatial coordinate
+-//
++  tmp1   = SIMD.Float32x4.mul(row0, row1);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
+ 
+-var VERTEX_SIZE = 3
+-var VERTEX_STRIDE = VERTEX_SIZE * 4
++  tmp1   = SIMD.Float32x4.mul(row0, row3);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
++  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
++  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
+ 
+-function TextSprites(
+-  gl,
+-  shader,
+-  buffer,
+-  vao) {
+-  this.gl           = gl
+-  this.shader       = shader
+-  this.buffer       = buffer
+-  this.vao          = vao
+-  this.tickOffset   =
+-  this.tickCount    =
+-  this.labelOffset  =
+-  this.labelCount   = null
+-}
++  tmp1   = SIMD.Float32x4.mul(row0, row2);
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
++  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
++  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
++  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
++  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
++  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
+ 
+-var proto = TextSprites.prototype
++  SIMD.Float32x4.store(out, 0,  minor0);
++  SIMD.Float32x4.store(out, 4,  minor1);
++  SIMD.Float32x4.store(out, 8,  minor2);
++  SIMD.Float32x4.store(out, 12, minor3);
++  return out;
++};
+ 
+-//Bind textures for rendering
+-var SHAPE = [0,0]
+-proto.bind = function(model, view, projection, pixelScale) {
+-  this.vao.bind()
+-  this.shader.bind()
+-  var uniforms = this.shader.uniforms
+-  uniforms.model = model
+-  uniforms.view = view
+-  uniforms.projection = projection
+-  uniforms.pixelScale = pixelScale
+-  SHAPE[0] = this.gl.drawingBufferWidth
+-  SHAPE[1] = this.gl.drawingBufferHeight
+-  this.shader.uniforms.resolution = SHAPE
+-}
++/**
++ * Calculates the adjugate of a mat4 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the source matrix
++ * @returns {mat4} out
++ */
++ mat4.adjoint = glMatrix.USE_SIMD ? mat4.SIMD.adjoint : mat4.scalar.adjoint;
+ 
+-proto.update = function(bounds, labels, labelFont, ticks, tickFont) {
+-  var gl = this.gl
+-  var data = []
++/**
++ * Calculates the determinant of a mat4
++ *
++ * @param {mat4} a the source matrix
++ * @returns {Number} determinant of a
++ */
++mat4.determinant = function (a) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-  function addItem(t, text, font, size) {
+-    var fontcache = __TEXT_CACHE[font]
+-    if(!fontcache) {
+-      fontcache = __TEXT_CACHE[font] = {}
+-    }
+-    var mesh = fontcache[text]
+-    if(!mesh) {
+-      mesh = fontcache[text] = tryVectorizeText(text, {
+-        triangles: true,
+-        font: font,
+-        textAlign: 'center',
+-        textBaseline: 'middle'
+-      })
+-    }
+-    var scale = (size || 12) / 12
+-    var positions = mesh.positions
+-    var cells = mesh.cells
+-    var lo = [ Infinity, Infinity]
+-    var hi = [-Infinity,-Infinity]
+-    for(var i=0, nc=cells.length; i<nc; ++i) {
+-      var c = cells[i]
+-      for(var j=2; j>=0; --j) {
+-        var p = positions[c[j]]
+-        data.push(scale*p[0], -scale*p[1], t)
+-      }
+-    }
+-  }
++        b00 = a00 * a11 - a01 * a10,
++        b01 = a00 * a12 - a02 * a10,
++        b02 = a00 * a13 - a03 * a10,
++        b03 = a01 * a12 - a02 * a11,
++        b04 = a01 * a13 - a03 * a11,
++        b05 = a02 * a13 - a03 * a12,
++        b06 = a20 * a31 - a21 * a30,
++        b07 = a20 * a32 - a22 * a30,
++        b08 = a20 * a33 - a23 * a30,
++        b09 = a21 * a32 - a22 * a31,
++        b10 = a21 * a33 - a23 * a31,
++        b11 = a22 * a33 - a23 * a32;
+ 
+-  //Generate sprites for all 3 axes, store data in texture atlases
+-  var tickOffset  = [0,0,0]
+-  var tickCount   = [0,0,0]
+-  var labelOffset = [0,0,0]
+-  var labelCount  = [0,0,0]
+-  for(var d=0; d<3; ++d) {
++    // Calculate the determinant
++    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++};
+ 
+-    //Generate label
+-    labelOffset[d] = (data.length/VERTEX_SIZE)|0
+-    addItem(0.5*(bounds[0][d]+bounds[1][d]), labels[d], labelFont)
+-    labelCount[d] = ((data.length/VERTEX_SIZE)|0) - labelOffset[d]
++/**
++ * Multiplies two mat4's explicitly using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand, must be a Float32Array
++ * @param {mat4} b the second operand, must be a Float32Array
++ * @returns {mat4} out
++ */
++mat4.SIMD.multiply = function (out, a, b) {
++    var a0 = SIMD.Float32x4.load(a, 0);
++    var a1 = SIMD.Float32x4.load(a, 4);
++    var a2 = SIMD.Float32x4.load(a, 8);
++    var a3 = SIMD.Float32x4.load(a, 12);
+ 
+-    //Generate sprites for tick marks
+-    tickOffset[d] = (data.length/VERTEX_SIZE)|0
+-    for(var i=0; i<ticks[d].length; ++i) {
+-      if(!ticks[d][i].text) {
+-        continue
+-      }
+-      addItem(
+-        ticks[d][i].x,
+-        ticks[d][i].text,
+-        ticks[d][i].font || tickFont,
+-        ticks[d][i].fontSize || 12)
+-    }
+-    tickCount[d] = ((data.length/VERTEX_SIZE)|0) - tickOffset[d]
+-  }
++    var b0 = SIMD.Float32x4.load(b, 0);
++    var out0 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 1, 1, 1, 1), a1),
++                       SIMD.Float32x4.add(
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 2, 2, 2, 2), a2),
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 0, out0);
+ 
+-  this.buffer.update(data)
+-  this.tickOffset = tickOffset
+-  this.tickCount = tickCount
+-  this.labelOffset = labelOffset
+-  this.labelCount = labelCount
+-}
++    var b1 = SIMD.Float32x4.load(b, 4);
++    var out1 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 1, 1, 1, 1), a1),
++                       SIMD.Float32x4.add(
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 2, 2, 2, 2), a2),
++                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 4, out1);
+ 
+-//Draws the tick marks for an axis
+-var AXIS = [0,0,0]
+-proto.drawTicks = function(d, scale, angle, offset, color) {
+-  if(!this.tickCount[d]) {
+-    return
+-  }
++    var b2 = SIMD.Float32x4.load(b, 8);
++    var out2 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 1, 1, 1, 1), a1),
++                       SIMD.Float32x4.add(
++                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 2, 2, 2, 2), a2),
++                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 8, out2);
+ 
+-  var v = AXIS
+-  v[0] = v[1] = v[2] = 0
+-  v[d] = 1
+-  this.shader.uniforms.axis = v
+-  this.shader.uniforms.color = color
+-  this.shader.uniforms.angle = angle
+-  this.shader.uniforms.scale = scale
+-  this.shader.uniforms.offset = offset
+-  this.vao.draw(this.gl.TRIANGLES, this.tickCount[d], this.tickOffset[d])
+-}
++    var b3 = SIMD.Float32x4.load(b, 12);
++    var out3 = SIMD.Float32x4.add(
++                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 0, 0, 0, 0), a0),
++                   SIMD.Float32x4.add(
++                        SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 1, 1, 1, 1), a1),
++                        SIMD.Float32x4.add(
++                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 2, 2, 2, 2), a2),
++                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 3, 3, 3, 3), a3))));
++    SIMD.Float32x4.store(out, 12, out3);
+ 
+-//Draws the text label for an axis
+-var ZERO = [0,0,0]
+-proto.drawLabel = function(d, scale, angle, offset, color) {
+-  if(!this.labelCount[d]) {
+-    return
+-  }
+-  this.shader.uniforms.axis = ZERO
+-  this.shader.uniforms.color = color
+-  this.shader.uniforms.angle = angle
+-  this.shader.uniforms.scale = scale
+-  this.shader.uniforms.offset = offset
+-  this.vao.draw(this.gl.TRIANGLES, this.labelCount[d], this.labelOffset[d])
+-}
++    return out;
++};
+ 
+-//Releases all resources attached to this object
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.vao.dispose()
+-  this.buffer.dispose()
+-}
++/**
++ * Multiplies two mat4's explicitly not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++mat4.scalar.multiply = function (out, a, b) {
++    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
++        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
++        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
++        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+ 
+-function tryVectorizeText(text, options) {
+-  try {
+-    return vectorizeText(text, options)
+-  } catch(e) {
+-    console.warn('error vectorizing text:', e)
+-    return {
+-      cells: [],
+-      positions: []
+-    }
+-  }
+-}
++    // Cache only the current line of the second matrix
++    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-function createTextSprites(
+-    gl,
+-    bounds,
+-    labels,
+-    labelFont,
+-    ticks,
+-    tickFont) {
++    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
++    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-  var buffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    { "buffer": buffer,
+-      "size": 3
+-    }
+-  ])
++    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
++    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ 
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
++    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
++    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
++    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
++    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
++    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    return out;
++};
+ 
+-  var result = new TextSprites(
+-    gl,
+-    shader,
+-    buffer,
+-    vao)
++/**
++ * Multiplies two mat4's using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++mat4.multiply = glMatrix.USE_SIMD ? mat4.SIMD.multiply : mat4.scalar.multiply;
+ 
+-  result.update(bounds, labels, labelFont, ticks, tickFont)
++/**
++ * Alias for {@link mat4.multiply}
++ * @function
++ */
++mat4.mul = mat4.multiply;
+ 
+-  return result
+-}
++/**
++ * Translate a mat4 by the given vector not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
++ */
++mat4.scalar.translate = function (out, a, v) {
++    var x = v[0], y = v[1], z = v[2],
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23;
+ 
+-}).call(this,require('_process'))
+-},{"./shaders":180,"_process":60,"gl-buffer":124,"gl-vao":232,"vectorize-text":460}],182:[function(require,module,exports){
+-'use strict'
++    if (a === out) {
++        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
++        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
++        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
++        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
++    } else {
++        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-exports.create   = defaultTicks
+-exports.equal    = ticksEqual
++        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
++        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
++        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
+ 
+-function prettyPrint(spacing, i) {
+-  var stepStr = spacing + ""
+-  var u = stepStr.indexOf(".")
+-  var sigFigs = 0
+-  if(u >= 0) {
+-    sigFigs = stepStr.length - u - 1
+-  }
+-  var shift = Math.pow(10, sigFigs)
+-  var x = Math.round(spacing * i * shift)
+-  var xstr = x + ""
+-  if(xstr.indexOf("e") >= 0) {
+-    return xstr
+-  }
+-  var xi = x / shift, xf = x % shift
+-  if(x < 0) {
+-    xi = -Math.ceil(xi)|0
+-    xf = (-xf)|0
+-  } else {
+-    xi = Math.floor(xi)|0
+-    xf = xf|0
+-  }
+-  var xis = "" + xi 
+-  if(x < 0) {
+-    xis = "-" + xis
+-  }
+-  if(sigFigs) {
+-    var xs = "" + xf
+-    while(xs.length < sigFigs) {
+-      xs = "0" + xs
++        out[12] = a00 * x + a10 * y + a20 * z + a[12];
++        out[13] = a01 * x + a11 * y + a21 * z + a[13];
++        out[14] = a02 * x + a12 * y + a22 * z + a[14];
++        out[15] = a03 * x + a13 * y + a23 * z + a[15];
+     }
+-    return xis + "." + xs
+-  } else {
+-    return xis
+-  }
+-}
+ 
+-function defaultTicks(bounds, tickSpacing) {
+-  var array = []
+-  for(var d=0; d<3; ++d) {
+-    var ticks = []
+-    var m = 0.5*(bounds[0][d]+bounds[1][d])
+-    for(var t=0; t*tickSpacing[d]<=bounds[1][d]; ++t) {
+-      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
+-    }
+-    for(var t=-1; t*tickSpacing[d]>=bounds[0][d]; --t) {
+-      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
+-    }
+-    array.push(ticks)
+-  }
+-  return array
+-}
++    return out;
++};
+ 
+-function ticksEqual(ticksA, ticksB) {
+-  for(var i=0; i<3; ++i) {
+-    if(ticksA[i].length !== ticksB[i].length) {
+-      return false
+-    }
+-    for(var j=0; j<ticksA[i].length; ++j) {
+-      var a = ticksA[i][j]
+-      var b = ticksB[i][j]
+-      if(a.x !== b.x || a.text !== b.text) {
+-        return false
+-      }
++/**
++ * Translates a mat4 by the given vector using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
++ */
++mat4.SIMD.translate = function (out, a, v) {
++    var a0 = SIMD.Float32x4.load(a, 0),
++        a1 = SIMD.Float32x4.load(a, 4),
++        a2 = SIMD.Float32x4.load(a, 8),
++        a3 = SIMD.Float32x4.load(a, 12),
++        vec = SIMD.Float32x4(v[0], v[1], v[2] , 0);
++
++    if (a !== out) {
++        out[0] = a[0]; out[1] = a[1]; out[2] = a[2]; out[3] = a[3];
++        out[4] = a[4]; out[5] = a[5]; out[6] = a[6]; out[7] = a[7];
++        out[8] = a[8]; out[9] = a[9]; out[10] = a[10]; out[11] = a[11];
+     }
+-  }
+-  return true
+-}
+-},{}],183:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = extractPlanes
++    a0 = SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0));
++    a1 = SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1));
++    a2 = SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2));
+ 
+-function extractPlanes(M, zNear, zFar) {
+-  var z  = zNear || 0.0
+-  var zf = zFar || 1.0
+-  return [
+-    [ M[12] + M[0], M[13] + M[1], M[14] + M[2], M[15] + M[3] ],
+-    [ M[12] - M[0], M[13] - M[1], M[14] - M[2], M[15] - M[3] ],
+-    [ M[12] + M[4], M[13] + M[5], M[14] + M[6], M[15] + M[7] ],
+-    [ M[12] - M[4], M[13] - M[5], M[14] - M[6], M[15] - M[7] ],
+-    [ z*M[12] + M[8], z*M[13] + M[9], z*M[14] + M[10], z*M[15] + M[11] ],
+-    [ zf*M[12] - M[8], zf*M[13] - M[9], zf*M[14] - M[10], zf*M[15] - M[11] ]
+-  ]
+-}
+-},{}],184:[function(require,module,exports){
+-"use strict"
++    var t0 = SIMD.Float32x4.add(a0, SIMD.Float32x4.add(a1, SIMD.Float32x4.add(a2, a3)));
++    SIMD.Float32x4.store(out, 12, t0);
+ 
+-var robustDot = require("robust-dot-product")
+-var robustSum = require("robust-sum")
++    return out;
++};
+ 
+-module.exports = splitPolygon
+-module.exports.positive = positive
+-module.exports.negative = negative
++/**
++ * Translates a mat4 by the given vector using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to translate
++ * @param {vec3} v vector to translate by
++ * @returns {mat4} out
++ */
++mat4.translate = glMatrix.USE_SIMD ? mat4.SIMD.translate : mat4.scalar.translate;
+ 
+-function planeT(p, plane) {
+-  var r = robustSum(robustDot(p, plane), [plane[plane.length-1]])
+-  return r[r.length-1]
+-}
++/**
++ * Scales the mat4 by the dimensions in the given vec3 not using vectorization
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ **/
++mat4.scalar.scale = function(out, a, v) {
++    var x = v[0], y = v[1], z = v[2];
+ 
++    out[0] = a[0] * x;
++    out[1] = a[1] * x;
++    out[2] = a[2] * x;
++    out[3] = a[3] * x;
++    out[4] = a[4] * y;
++    out[5] = a[5] * y;
++    out[6] = a[6] * y;
++    out[7] = a[7] * y;
++    out[8] = a[8] * z;
++    out[9] = a[9] * z;
++    out[10] = a[10] * z;
++    out[11] = a[11] * z;
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-//Can't do this exactly and emit a floating point result
+-function lerpW(a, wa, b, wb) {
+-  var d = wb - wa
+-  var t = -wa / d
+-  if(t < 0.0) {
+-    t = 0.0
+-  } else if(t > 1.0) {
+-    t = 1.0
+-  }
+-  var ti = 1.0 - t
+-  var n = a.length
+-  var r = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    r[i] = t * a[i] + ti * b[i]
+-  }
+-  return r
+-}
++/**
++ * Scales the mat4 by the dimensions in the given vec3 using vectorization
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ **/
++mat4.SIMD.scale = function(out, a, v) {
++    var a0, a1, a2;
++    var vec = SIMD.Float32x4(v[0], v[1], v[2], 0);
+ 
+-function splitPolygon(points, plane) {
+-  var pos = []
+-  var neg = []
+-  var a = planeT(points[points.length-1], plane)
+-  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
+-    t = points[i]
+-    var b = planeT(t, plane)
+-    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
+-      var p = lerpW(s, b, t, a)
+-      pos.push(p)
+-      neg.push(p.slice())
+-    }
+-    if(b < 0) {
+-      neg.push(t.slice())
+-    } else if(b > 0) {
+-      pos.push(t.slice())
+-    } else {
+-      pos.push(t.slice())
+-      neg.push(t.slice())
+-    }
+-    a = b
+-  }
+-  return { positive: pos, negative: neg }
+-}
++    a0 = SIMD.Float32x4.load(a, 0);
++    SIMD.Float32x4.store(
++        out, 0, SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0)));
+ 
+-function positive(points, plane) {
+-  var pos = []
+-  var a = planeT(points[points.length-1], plane)
+-  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
+-    t = points[i]
+-    var b = planeT(t, plane)
+-    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
+-      pos.push(lerpW(s, b, t, a))
+-    }
+-    if(b >= 0) {
+-      pos.push(t.slice())
+-    }
+-    a = b
+-  }
+-  return pos
+-}
++    a1 = SIMD.Float32x4.load(a, 4);
++    SIMD.Float32x4.store(
++        out, 4, SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1)));
+ 
+-function negative(points, plane) {
+-  var neg = []
+-  var a = planeT(points[points.length-1], plane)
+-  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
+-    t = points[i]
+-    var b = planeT(t, plane)
+-    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
+-      neg.push(lerpW(s, b, t, a))
+-    }
+-    if(b <= 0) {
+-      neg.push(t.slice())
+-    }
+-    a = b
+-  }
+-  return neg
+-}
+-},{"robust-dot-product":185,"robust-sum":442}],185:[function(require,module,exports){
+-"use strict"
++    a2 = SIMD.Float32x4.load(a, 8);
++    SIMD.Float32x4.store(
++        out, 8, SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2)));
+ 
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
++    out[12] = a[12];
++    out[13] = a[13];
++    out[14] = a[14];
++    out[15] = a[15];
++    return out;
++};
+ 
+-module.exports = robustDotProduct
++/**
++ * Scales the mat4 by the dimensions in the given vec3 using SIMD if available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {vec3} v the vec3 to scale the matrix by
++ * @returns {mat4} out
++ */
++mat4.scale = glMatrix.USE_SIMD ? mat4.SIMD.scale : mat4.scalar.scale;
+ 
+-function robustDotProduct(a, b) {
+-  var r = twoProduct(a[0], b[0])
+-  for(var i=1; i<a.length; ++i) {
+-    r = robustSum(r, twoProduct(a[i], b[i]))
+-  }
+-  return r
+-}
+-},{"robust-sum":442,"two-product":456}],186:[function(require,module,exports){
+-"use strict"
++/**
++ * Rotates a mat4 by the given angle around the given axis
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @param {vec3} axis the axis to rotate around
++ * @returns {mat4} out
++ */
++mat4.rotate = function (out, a, rad, axis) {
++    var x = axis[0], y = axis[1], z = axis[2],
++        len = Math.sqrt(x * x + y * y + z * z),
++        s, c, t,
++        a00, a01, a02, a03,
++        a10, a11, a12, a13,
++        a20, a21, a22, a23,
++        b00, b01, b02,
++        b10, b11, b12,
++        b20, b21, b22;
+ 
+-module.exports = axesProperties
++    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
+ 
+-var getPlanes   = require("extract-frustum-planes")
+-var splitPoly   = require("split-polygon")
+-var cubeParams  = require("./lib/cube.js")
+-var m4mul       = require("gl-mat4/multiply")
+-var m4transpose = require("gl-mat4/transpose")
+-var v4transformMat4 = require("gl-vec4/transformMat4")
++    len = 1 / len;
++    x *= len;
++    y *= len;
++    z *= len;
+ 
+-var identity    = new Float32Array([
+-    1, 0, 0, 0,
+-    0, 1, 0, 0,
+-    0, 0, 1, 0,
+-    0, 0, 0, 1
+-  ])
++    s = Math.sin(rad);
++    c = Math.cos(rad);
++    t = 1 - c;
+ 
+-var mvp         = new Float32Array(16)
++    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
++    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
++    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+ 
+-function AxesRange3D(lo, hi, pixelsPerDataUnit) {
+-  this.lo = lo
+-  this.hi = hi
+-  this.pixelsPerDataUnit = pixelsPerDataUnit
+-}
++    // Construct the elements of the rotation matrix
++    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
++    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
++    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
+ 
+-var SCRATCH_P = [0,0,0,1]
+-var SCRATCH_Q = [0,0,0,1]
++    // Perform rotation-specific matrix multiplication
++    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
++    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
++    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
++    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
++    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
++    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
++    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
++    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
++    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
++    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
++    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
++    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
+ 
+-function gradient(result, M, v, width, height) {
+-  for(var i=0; i<3; ++i) {
+-    var p = SCRATCH_P
+-    var q = SCRATCH_Q
+-    for(var j=0; j<3; ++j) {
+-      q[j] = p[j] = v[j]
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+-    q[3] = p[3] = 1
++    return out;
++};
+ 
+-    q[i] += 1
+-    v4transformMat4(q, q, M)
+-    if(q[3] < 0) {
+-      result[i] = Infinity
+-    }
++/**
++ * Rotates a matrix by the given angle around the X axis not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.scalar.rotateX = function (out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
+ 
+-    p[i] -= 1
+-    v4transformMat4(p, p, M)
+-    if(p[3] < 0) {
+-      result[i] = Infinity
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[0]  = a[0];
++        out[1]  = a[1];
++        out[2]  = a[2];
++        out[3]  = a[3];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+ 
+-    var dx = (p[0]/p[3] - q[0]/q[3]) * width
+-    var dy = (p[1]/p[3] - q[1]/q[3]) * height
++    // Perform axis-specific matrix multiplication
++    out[4] = a10 * c + a20 * s;
++    out[5] = a11 * c + a21 * s;
++    out[6] = a12 * c + a22 * s;
++    out[7] = a13 * c + a23 * s;
++    out[8] = a20 * c - a10 * s;
++    out[9] = a21 * c - a11 * s;
++    out[10] = a22 * c - a12 * s;
++    out[11] = a23 * c - a13 * s;
++    return out;
++};
+ 
+-    result[i] = 0.25 * Math.sqrt(dx*dx + dy*dy)
+-  }
+-  return result
+-}
++/**
++ * Rotates a matrix by the given angle around the X axis using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.SIMD.rotateX = function (out, a, rad) {
++    var s = SIMD.Float32x4.splat(Math.sin(rad)),
++        c = SIMD.Float32x4.splat(Math.cos(rad));
+ 
+-var RANGES = [
+-  new AxesRange3D(Infinity, -Infinity, Infinity),
+-  new AxesRange3D(Infinity, -Infinity, Infinity),
+-  new AxesRange3D(Infinity, -Infinity, Infinity)
+-]
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++      out[0]  = a[0];
++      out[1]  = a[1];
++      out[2]  = a[2];
++      out[3]  = a[3];
++      out[12] = a[12];
++      out[13] = a[13];
++      out[14] = a[14];
++      out[15] = a[15];
++    }
+ 
+-var SCRATCH_X = [0,0,0]
++    // Perform axis-specific matrix multiplication
++    var a_1 = SIMD.Float32x4.load(a, 4);
++    var a_2 = SIMD.Float32x4.load(a, 8);
++    SIMD.Float32x4.store(out, 4,
++                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_2, s)));
++    SIMD.Float32x4.store(out, 8,
++                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_2, c), SIMD.Float32x4.mul(a_1, s)));
++    return out;
++};
++
++/**
++ * Rotates a matrix by the given angle around the X axis using SIMD if availabe and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.rotateX = glMatrix.USE_SIMD ? mat4.SIMD.rotateX : mat4.scalar.rotateX;
++
++/**
++ * Rotates a matrix by the given angle around the Y axis not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.scalar.rotateY = function (out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a20 = a[8],
++        a21 = a[9],
++        a22 = a[10],
++        a23 = a[11];
+ 
+-function axesProperties(axes, camera, width, height, params) {
+-  var model       = camera.model || identity
+-  var view        = camera.view || identity
+-  var projection  = camera.projection || identity
+-  var bounds      = axes.bounds
+-  var params      = params || cubeParams(model, view, projection, bounds)
+-  var axis        = params.axis
+-  var edges       = params.edges
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[4]  = a[4];
++        out[5]  = a[5];
++        out[6]  = a[6];
++        out[7]  = a[7];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
+ 
+-  m4mul(mvp, view, model)
+-  m4mul(mvp, projection, mvp)
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c - a20 * s;
++    out[1] = a01 * c - a21 * s;
++    out[2] = a02 * c - a22 * s;
++    out[3] = a03 * c - a23 * s;
++    out[8] = a00 * s + a20 * c;
++    out[9] = a01 * s + a21 * c;
++    out[10] = a02 * s + a22 * c;
++    out[11] = a03 * s + a23 * c;
++    return out;
++};
+ 
+-  //Calculate the following properties for each axis:
+-  //
+-  // * lo - start of visible range for each axis in tick coordinates
+-  // * hi - end of visible range for each axis in tick coordinates
+-  // * ticksPerPixel - pixel density of tick marks for the axis
+-  //
+-  var ranges = RANGES
+-  for(var i=0; i<3; ++i) {
+-    ranges[i].lo = Infinity
+-    ranges[i].hi = -Infinity
+-    ranges[i].pixelsPerDataUnit = Infinity
+-  }
++/**
++ * Rotates a matrix by the given angle around the Y axis using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.SIMD.rotateY = function (out, a, rad) {
++    var s = SIMD.Float32x4.splat(Math.sin(rad)),
++        c = SIMD.Float32x4.splat(Math.cos(rad));
+ 
+-  //Compute frustum planes, intersect with box
+-  var frustum = getPlanes(m4transpose(mvp, mvp))
+-  m4transpose(mvp, mvp)
++    if (a !== out) { // If the source and destination differ, copy the unchanged rows
++        out[4]  = a[4];
++        out[5]  = a[5];
++        out[6]  = a[6];
++        out[7]  = a[7];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
+ 
+-  //Loop over vertices of viewable box
+-  for(var d=0; d<3; ++d) {
+-    var u = (d+1)%3
+-    var v = (d+2)%3
+-    var x = SCRATCH_X
+-i_loop:
+-    for(var i=0; i<2; ++i) {
+-      var poly = []
++    // Perform axis-specific matrix multiplication
++    var a_0 = SIMD.Float32x4.load(a, 0);
++    var a_2 = SIMD.Float32x4.load(a, 8);
++    SIMD.Float32x4.store(out, 0,
++                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_2, s)));
++    SIMD.Float32x4.store(out, 8,
++                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, s), SIMD.Float32x4.mul(a_2, c)));
++    return out;
++};
+ 
+-      if((axis[d] < 0) === !!i) {
+-        continue
+-      }
++/**
++ * Rotates a matrix by the given angle around the Y axis if SIMD available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++ mat4.rotateY = glMatrix.USE_SIMD ? mat4.SIMD.rotateY : mat4.scalar.rotateY;
+ 
+-      x[d] = bounds[i][d]
+-      for(var j=0; j<2; ++j) {
+-        x[u] = bounds[j^i][u]
+-        for(var k=0; k<2; ++k) {
+-          x[v] = bounds[k^j^i][v]
+-          poly.push(x.slice())
+-        }
+-      }
+-      for(var j=0; j<frustum.length; ++j) {
+-        if(poly.length === 0) {
+-          continue i_loop
+-        }
+-        poly = splitPoly.positive(poly, frustum[j])
+-      }
++/**
++ * Rotates a matrix by the given angle around the Z axis not using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.scalar.rotateZ = function (out, a, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad),
++        a00 = a[0],
++        a01 = a[1],
++        a02 = a[2],
++        a03 = a[3],
++        a10 = a[4],
++        a11 = a[5],
++        a12 = a[6],
++        a13 = a[7];
+ 
+-      //Loop over vertices of polygon to find extremal points
+-      for(var j=0; j<poly.length; ++j) {
+-        var v = poly[j]
+-        var grad = gradient(SCRATCH_X, mvp, v, width, height)
+-        for(var k=0; k<3; ++k) {
+-          ranges[k].lo = Math.min(ranges[k].lo, v[k])
+-          ranges[k].hi = Math.max(ranges[k].hi, v[k])
+-          if(k !== d) {
+-            ranges[k].pixelsPerDataUnit = Math.min(ranges[k].pixelsPerDataUnit, Math.abs(grad[k]))
+-          }
+-        }
+-      }
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[8]  = a[8];
++        out[9]  = a[9];
++        out[10] = a[10];
++        out[11] = a[11];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
+     }
+-  }
+ 
+-  return ranges
+-}
++    // Perform axis-specific matrix multiplication
++    out[0] = a00 * c + a10 * s;
++    out[1] = a01 * c + a11 * s;
++    out[2] = a02 * c + a12 * s;
++    out[3] = a03 * c + a13 * s;
++    out[4] = a10 * c - a00 * s;
++    out[5] = a11 * c - a01 * s;
++    out[6] = a12 * c - a02 * s;
++    out[7] = a13 * c - a03 * s;
++    return out;
++};
+ 
+-},{"./lib/cube.js":178,"extract-frustum-planes":183,"gl-mat4/multiply":145,"gl-mat4/transpose":153,"gl-vec4/transformMat4":233,"split-polygon":184}],187:[function(require,module,exports){
+-'use strict'
++/**
++ * Rotates a matrix by the given angle around the Z axis using SIMD
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.SIMD.rotateZ = function (out, a, rad) {
++    var s = SIMD.Float32x4.splat(Math.sin(rad)),
++        c = SIMD.Float32x4.splat(Math.cos(rad));
+ 
++    if (a !== out) { // If the source and destination differ, copy the unchanged last row
++        out[8]  = a[8];
++        out[9]  = a[9];
++        out[10] = a[10];
++        out[11] = a[11];
++        out[12] = a[12];
++        out[13] = a[13];
++        out[14] = a[14];
++        out[15] = a[15];
++    }
+ 
+-var createShader = require('gl-shader')
++    // Perform axis-specific matrix multiplication
++    var a_0 = SIMD.Float32x4.load(a, 0);
++    var a_1 = SIMD.Float32x4.load(a, 4);
++    SIMD.Float32x4.store(out, 0,
++                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_1, s)));
++    SIMD.Float32x4.store(out, 4,
++                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_0, s)));
++    return out;
++};
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, color;\nattribute float weight;\n\nuniform mat4 model, view, projection;\nuniform vec3 coordinates[3];\nuniform vec4 colors[3];\nuniform vec2 screenShape;\nuniform float lineWidth;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vertexPosition = mix(coordinates[0],\n    mix(coordinates[2], coordinates[1], 0.5 * (position + 1.0)), abs(position));\n\n  vec4 clipPos = projection * view * model * vec4(vertexPosition, 1.0);\n  vec2 clipOffset = (projection * view * model * vec4(color, 0.0)).xy;\n  vec2 delta = weight * clipOffset * screenShape;\n  vec2 lineOffset = normalize(vec2(delta.y, -delta.x)) / screenShape;\n\n  gl_Position   = vec4(clipPos.xy + clipPos.w * 0.5 * lineWidth * lineOffset, clipPos.z, clipPos.w);\n  fragColor     = color.x * colors[0] + color.y * colors[1] + color.z * colors[2];\n}\n"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragColor;\n\nvoid main() {\n  gl_FragColor = fragColor;\n}"
++/**
++ * Rotates a matrix by the given angle around the Z axis if SIMD available and enabled
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to rotate
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++ mat4.rotateZ = glMatrix.USE_SIMD ? mat4.SIMD.rotateZ : mat4.scalar.rotateZ;
+ 
+-module.exports = function(gl) {
+-  return createShader(gl, vertSrc, fragSrc, null, [
+-    {name: 'position', type: 'vec3'},
+-    {name: 'color', type: 'vec3'},
+-    {name: 'weight', type: 'float'}
+-  ])
++/**
++ * Creates a matrix from a vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, dest, vec);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {vec3} v Translation vector
++ * @returns {mat4} out
++ */
++mat4.fromTranslation = function(out, v) {
++    out[0] = 1;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
++    return out;
+ }
+ 
+-},{"gl-shader":203}],188:[function(require,module,exports){
+-'use strict'
++/**
++ * Creates a matrix from a vector scaling
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.scale(dest, dest, vec);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {vec3} v Scaling vector
++ * @returns {mat4} out
++ */
++mat4.fromScaling = function(out, v) {
++    out[0] = v[0];
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = v[1];
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = v[2];
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++}
+ 
+-var createBuffer = require('gl-buffer')
+-var createVAO = require('gl-vao')
+-var createShader = require('./shaders/index')
++/**
++ * Creates a matrix from a given angle around a given axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotate(dest, dest, rad, axis);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @param {vec3} axis the axis to rotate around
++ * @returns {mat4} out
++ */
++mat4.fromRotation = function(out, rad, axis) {
++    var x = axis[0], y = axis[1], z = axis[2],
++        len = Math.sqrt(x * x + y * y + z * z),
++        s, c, t;
+ 
+-module.exports = createSpikes
++    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
+ 
+-var identity = [1,0,0,0,
+-                0,1,0,0,
+-                0,0,1,0,
+-                0,0,0,1]
++    len = 1 / len;
++    x *= len;
++    y *= len;
++    z *= len;
+ 
+-function AxisSpikes(gl, buffer, vao, shader) {
+-  this.gl         = gl
+-  this.buffer     = buffer
+-  this.vao        = vao
+-  this.shader     = shader
+-  this.pixelRatio = 1
+-  this.bounds     = [[-1000,-1000,-1000], [1000,1000,1000]]
+-  this.position   = [0,0,0]
+-  this.lineWidth  = [2,2,2]
+-  this.colors     = [[0,0,0,1], [0,0,0,1], [0,0,0,1]]
+-  this.enabled    = [true,true,true]
+-  this.drawSides  = [true,true,true]
+-  this.axes       = null
++    s = Math.sin(rad);
++    c = Math.cos(rad);
++    t = 1 - c;
++
++    // Perform rotation-specific matrix multiplication
++    out[0] = x * x * t + c;
++    out[1] = y * x * t + z * s;
++    out[2] = z * x * t - y * s;
++    out[3] = 0;
++    out[4] = x * y * t - z * s;
++    out[5] = y * y * t + c;
++    out[6] = z * y * t + x * s;
++    out[7] = 0;
++    out[8] = x * z * t + y * s;
++    out[9] = y * z * t - x * s;
++    out[10] = z * z * t + c;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
+ }
+ 
+-var proto = AxisSpikes.prototype
++/**
++ * Creates a matrix from the given angle around the X axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotateX(dest, dest, rad);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.fromXRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
+ 
+-var OUTER_FACE = [0,0,0]
+-var INNER_FACE = [0,0,0]
++    // Perform axis-specific matrix multiplication
++    out[0]  = 1;
++    out[1]  = 0;
++    out[2]  = 0;
++    out[3]  = 0;
++    out[4] = 0;
++    out[5] = c;
++    out[6] = s;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = -s;
++    out[10] = c;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++}
+ 
+-var SHAPE = [0,0]
++/**
++ * Creates a matrix from the given angle around the Y axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotateY(dest, dest, rad);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.fromYRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
+ 
+-proto.isTransparent = function() {
+-  return false
++    // Perform axis-specific matrix multiplication
++    out[0]  = c;
++    out[1]  = 0;
++    out[2]  = -s;
++    out[3]  = 0;
++    out[4] = 0;
++    out[5] = 1;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = s;
++    out[9] = 0;
++    out[10] = c;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
+ }
+ 
+-proto.drawTransparent = function(camera) {}
+-
+-proto.draw = function(camera) {
+-  var gl = this.gl
+-  var vao = this.vao
+-  var shader = this.shader
++/**
++ * Creates a matrix from the given angle around the Z axis
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.rotateZ(dest, dest, rad);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {Number} rad the angle to rotate the matrix by
++ * @returns {mat4} out
++ */
++mat4.fromZRotation = function(out, rad) {
++    var s = Math.sin(rad),
++        c = Math.cos(rad);
+ 
+-  vao.bind()
+-  shader.bind()
++    // Perform axis-specific matrix multiplication
++    out[0]  = c;
++    out[1]  = s;
++    out[2]  = 0;
++    out[3]  = 0;
++    out[4] = -s;
++    out[5] = c;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 1;
++    out[11] = 0;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
++    return out;
++}
+ 
+-  var model      = camera.model || identity
+-  var view       = camera.view || identity
+-  var projection = camera.projection || identity
++/**
++ * Creates a matrix from a quaternion rotation and vector translation
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @returns {mat4} out
++ */
++mat4.fromRotationTranslation = function (out, q, v) {
++    // Quaternion math
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-  var axis
+-  if(this.axes) {
+-    axis = this.axes.lastCubeProps.axis
+-  }
++        xx = x * x2,
++        xy = x * y2,
++        xz = x * z2,
++        yy = y * y2,
++        yz = y * z2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-  var outerFace = OUTER_FACE
+-  var innerFace = INNER_FACE
+-  for(var i=0; i<3; ++i) {
+-    if(axis && axis[i] < 0) {
+-      outerFace[i] = this.bounds[0][i]
+-      innerFace[i] = this.bounds[1][i]
+-    } else {
+-      outerFace[i] = this.bounds[1][i]
+-      innerFace[i] = this.bounds[0][i]
+-    }
+-  }
++    out[0] = 1 - (yy + zz);
++    out[1] = xy + wz;
++    out[2] = xz - wy;
++    out[3] = 0;
++    out[4] = xy - wz;
++    out[5] = 1 - (xx + zz);
++    out[6] = yz + wx;
++    out[7] = 0;
++    out[8] = xz + wy;
++    out[9] = yz - wx;
++    out[10] = 1 - (xx + yy);
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
+ 
+-  SHAPE[0] = gl.drawingBufferWidth
+-  SHAPE[1] = gl.drawingBufferHeight
++    return out;
++};
+ 
+-  shader.uniforms.model       = model
+-  shader.uniforms.view        = view
+-  shader.uniforms.projection  = projection
+-  shader.uniforms.coordinates = [this.position, outerFace, innerFace]
+-  shader.uniforms.colors      = this.colors
+-  shader.uniforms.screenShape = SHAPE
++/**
++ * Returns the translation vector component of a transformation
++ *  matrix. If a matrix is built with fromRotationTranslation,
++ *  the returned vector will be the same as the translation vector
++ *  originally supplied.
++ * @param  {vec3} out Vector to receive translation component
++ * @param  {mat4} mat Matrix to be decomposed (input)
++ * @return {vec3} out
++ */
++mat4.getTranslation = function (out, mat) {
++  out[0] = mat[12];
++  out[1] = mat[13];
++  out[2] = mat[14];
+ 
+-  for(var i=0; i<3; ++i) {
+-    shader.uniforms.lineWidth = this.lineWidth[i] * this.pixelRatio
+-    if(this.enabled[i]) {
+-      vao.draw(gl.TRIANGLES, 6, 6*i)
+-      if(this.drawSides[i]) {
+-        vao.draw(gl.TRIANGLES, 12, 18+12*i)
+-      }
+-    }
+-  }
++  return out;
++};
+ 
+-  vao.unbind()
+-}
++/**
++ * Returns a quaternion representing the rotational component
++ *  of a transformation matrix. If a matrix is built with
++ *  fromRotationTranslation, the returned quaternion will be the
++ *  same as the quaternion originally supplied.
++ * @param {quat} out Quaternion to receive the rotation component
++ * @param {mat4} mat Matrix to be decomposed (input)
++ * @return {quat} out
++ */
++mat4.getRotation = function (out, mat) {
++  // Algorithm taken from http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
++  var trace = mat[0] + mat[5] + mat[10];
++  var S = 0;
+ 
+-proto.update = function(options) {
+-  if(!options) {
+-    return
+-  }
+-  if("bounds" in options) {
+-    this.bounds = options.bounds
+-  }
+-  if("position" in options) {
+-    this.position = options.position
+-  }
+-  if("lineWidth" in options) {
+-    this.lineWidth = options.lineWidth
+-  }
+-  if("colors" in options) {
+-    this.colors = options.colors
+-  }
+-  if("enabled" in options) {
+-    this.enabled = options.enabled
+-  }
+-  if("drawSides" in options) {
+-    this.drawSides = options.drawSides
++  if (trace > 0) { 
++    S = Math.sqrt(trace + 1.0) * 2;
++    out[3] = 0.25 * S;
++    out[0] = (mat[6] - mat[9]) / S;
++    out[1] = (mat[8] - mat[2]) / S; 
++    out[2] = (mat[1] - mat[4]) / S; 
++  } else if ((mat[0] > mat[5])&(mat[0] > mat[10])) { 
++    S = Math.sqrt(1.0 + mat[0] - mat[5] - mat[10]) * 2;
++    out[3] = (mat[6] - mat[9]) / S;
++    out[0] = 0.25 * S;
++    out[1] = (mat[1] + mat[4]) / S; 
++    out[2] = (mat[8] + mat[2]) / S; 
++  } else if (mat[5] > mat[10]) { 
++    S = Math.sqrt(1.0 + mat[5] - mat[0] - mat[10]) * 2;
++    out[3] = (mat[8] - mat[2]) / S;
++    out[0] = (mat[1] + mat[4]) / S; 
++    out[1] = 0.25 * S;
++    out[2] = (mat[6] + mat[9]) / S; 
++  } else { 
++    S = Math.sqrt(1.0 + mat[10] - mat[0] - mat[5]) * 2;
++    out[3] = (mat[1] - mat[4]) / S;
++    out[0] = (mat[8] + mat[2]) / S;
++    out[1] = (mat[6] + mat[9]) / S;
++    out[2] = 0.25 * S;
+   }
+-}
+ 
+-proto.dispose = function() {
+-  this.vao.dispose()
+-  this.buffer.dispose()
+-  this.shader.dispose()
+-}
++  return out;
++};
+ 
++/**
++ * Creates a matrix from a quaternion rotation, vector translation and vector scale
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *     mat4.scale(dest, scale)
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @param {vec3} s Scaling vector
++ * @returns {mat4} out
++ */
++mat4.fromRotationTranslationScale = function (out, q, v, s) {
++    // Quaternion math
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
++        xx = x * x2,
++        xy = x * y2,
++        xz = x * z2,
++        yy = y * y2,
++        yz = y * z2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2,
++        sx = s[0],
++        sy = s[1],
++        sz = s[2];
+ 
+-function createSpikes(gl, options) {
+-  //Create buffers
+-  var data = [ ]
++    out[0] = (1 - (yy + zz)) * sx;
++    out[1] = (xy + wz) * sx;
++    out[2] = (xz - wy) * sx;
++    out[3] = 0;
++    out[4] = (xy - wz) * sy;
++    out[5] = (1 - (xx + zz)) * sy;
++    out[6] = (yz + wx) * sy;
++    out[7] = 0;
++    out[8] = (xz + wy) * sz;
++    out[9] = (yz - wx) * sz;
++    out[10] = (1 - (xx + yy)) * sz;
++    out[11] = 0;
++    out[12] = v[0];
++    out[13] = v[1];
++    out[14] = v[2];
++    out[15] = 1;
+ 
+-  function line(x,y,z,i,l,h) {
+-    var row = [x,y,z,  0,0,0,  1]
+-    row[i+3] = 1
+-    row[i] = l
+-    data.push.apply(data, row)
+-    row[6] = -1
+-    data.push.apply(data, row)
+-    row[i] = h
+-    data.push.apply(data, row)
+-    data.push.apply(data, row)
+-    row[6] = 1
+-    data.push.apply(data, row)
+-    row[i] = l
+-    data.push.apply(data, row)
+-  }
++    return out;
++};
+ 
+-  line(0,0,0, 0, 0, 1)
+-  line(0,0,0, 1, 0, 1)
+-  line(0,0,0, 2, 0, 1)
++/**
++ * Creates a matrix from a quaternion rotation, vector translation and vector scale, rotating and scaling around the given origin
++ * This is equivalent to (but much faster than):
++ *
++ *     mat4.identity(dest);
++ *     mat4.translate(dest, vec);
++ *     mat4.translate(dest, origin);
++ *     var quatMat = mat4.create();
++ *     quat4.toMat4(quat, quatMat);
++ *     mat4.multiply(dest, quatMat);
++ *     mat4.scale(dest, scale)
++ *     mat4.translate(dest, negativeOrigin);
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat4} q Rotation quaternion
++ * @param {vec3} v Translation vector
++ * @param {vec3} s Scaling vector
++ * @param {vec3} o The origin vector around which to scale and rotate
++ * @returns {mat4} out
++ */
++mat4.fromRotationTranslationScaleOrigin = function (out, q, v, s, o) {
++  // Quaternion math
++  var x = q[0], y = q[1], z = q[2], w = q[3],
++      x2 = x + x,
++      y2 = y + y,
++      z2 = z + z,
+ 
+-  line(1,0,0,  1,  -1,1)
+-  line(1,0,0,  2,  -1,1)
++      xx = x * x2,
++      xy = x * y2,
++      xz = x * z2,
++      yy = y * y2,
++      yz = y * z2,
++      zz = z * z2,
++      wx = w * x2,
++      wy = w * y2,
++      wz = w * z2,
+ 
+-  line(0,1,0,  0,  -1,1)
+-  line(0,1,0,  2,  -1,1)
++      sx = s[0],
++      sy = s[1],
++      sz = s[2],
+ 
+-  line(0,0,1,  0,  -1,1)
+-  line(0,0,1,  1,  -1,1)
++      ox = o[0],
++      oy = o[1],
++      oz = o[2];
+ 
+-  var buffer = createBuffer(gl, data)
+-  var vao = createVAO(gl, [{
+-    type: gl.FLOAT,
+-    buffer: buffer,
+-    size: 3,
+-    offset: 0,
+-    stride: 28
+-  }, {
+-    type: gl.FLOAT,
+-    buffer: buffer,
+-    size: 3,
+-    offset: 12,
+-    stride: 28
+-  }, {
+-    type: gl.FLOAT,
+-    buffer: buffer,
+-    size: 1,
+-    offset: 24,
+-    stride: 28
+-  }])
++  out[0] = (1 - (yy + zz)) * sx;
++  out[1] = (xy + wz) * sx;
++  out[2] = (xz - wy) * sx;
++  out[3] = 0;
++  out[4] = (xy - wz) * sy;
++  out[5] = (1 - (xx + zz)) * sy;
++  out[6] = (yz + wx) * sy;
++  out[7] = 0;
++  out[8] = (xz + wy) * sz;
++  out[9] = (yz - wx) * sz;
++  out[10] = (1 - (xx + yy)) * sz;
++  out[11] = 0;
++  out[12] = v[0] + ox - (out[0] * ox + out[4] * oy + out[8] * oz);
++  out[13] = v[1] + oy - (out[1] * ox + out[5] * oy + out[9] * oz);
++  out[14] = v[2] + oz - (out[2] * ox + out[6] * oy + out[10] * oz);
++  out[15] = 1;
+ 
+-  //Create shader
+-  var shader = createShader(gl)
+-  shader.attributes.position.location = 0
+-  shader.attributes.color.location = 1
+-  shader.attributes.weight.location = 2
++  return out;
++};
+ 
+-  //Create spike object
+-  var spikes = new AxisSpikes(gl, buffer, vao, shader)
++/**
++ * Calculates a 4x4 matrix from the given quaternion
++ *
++ * @param {mat4} out mat4 receiving operation result
++ * @param {quat} q Quaternion to create matrix from
++ *
++ * @returns {mat4} out
++ */
++mat4.fromQuat = function (out, q) {
++    var x = q[0], y = q[1], z = q[2], w = q[3],
++        x2 = x + x,
++        y2 = y + y,
++        z2 = z + z,
+ 
+-  //Set parameters
+-  spikes.update(options)
++        xx = x * x2,
++        yx = y * x2,
++        yy = y * y2,
++        zx = z * x2,
++        zy = z * y2,
++        zz = z * z2,
++        wx = w * x2,
++        wy = w * y2,
++        wz = w * z2;
+ 
+-  //Return resulting object
+-  return spikes
+-}
++    out[0] = 1 - yy - zz;
++    out[1] = yx + wz;
++    out[2] = zx - wy;
++    out[3] = 0;
+ 
+-},{"./shaders/index":187,"gl-buffer":124,"gl-vao":232}],189:[function(require,module,exports){
+-'use strict'
++    out[4] = yx - wz;
++    out[5] = 1 - xx - zz;
++    out[6] = zy + wx;
++    out[7] = 0;
+ 
+-module.exports = createScene
++    out[8] = zx + wy;
++    out[9] = zy - wx;
++    out[10] = 1 - xx - yy;
++    out[11] = 0;
+ 
+-var createCamera = require('3d-view-controls')
+-var createAxes   = require('gl-axes3d')
+-var axesRanges   = require('gl-axes3d/properties')
+-var createSpikes = require('gl-spikes3d')
+-var createSelect = require('gl-select-static')
+-var createFBO    = require('gl-fbo')
+-var drawTriangle = require('a-big-triangle')
+-var mouseChange  = require('mouse-change')
+-var perspective  = require('gl-mat4/perspective')
+-var createShader = require('./lib/shader')
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = 0;
++    out[15] = 1;
+ 
+-function MouseSelect() {
+-  this.mouse          = [-1,-1]
+-  this.screen         = null
+-  this.distance       = Infinity
+-  this.index          = null
+-  this.dataCoordinate = null
+-  this.dataPosition   = null
+-  this.object         = null
+-  this.data           = null
+-}
++    return out;
++};
+ 
+-function getContext(canvas, options) {
+-  var gl = null
+-  try {
+-    gl = canvas.getContext('webgl', options)
+-    if(!gl) {
+-      gl = canvas.getContext('experimental-webgl', options)
+-    }
+-  } catch(e) {
+-    return null
+-  }
+-  return gl
+-}
++/**
++ * Generates a frustum matrix with the given bounds
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {Number} left Left bound of the frustum
++ * @param {Number} right Right bound of the frustum
++ * @param {Number} bottom Bottom bound of the frustum
++ * @param {Number} top Top bound of the frustum
++ * @param {Number} near Near bound of the frustum
++ * @param {Number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.frustum = function (out, left, right, bottom, top, near, far) {
++    var rl = 1 / (right - left),
++        tb = 1 / (top - bottom),
++        nf = 1 / (near - far);
++    out[0] = (near * 2) * rl;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = (near * 2) * tb;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = (right + left) * rl;
++    out[9] = (top + bottom) * tb;
++    out[10] = (far + near) * nf;
++    out[11] = -1;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = (far * near * 2) * nf;
++    out[15] = 0;
++    return out;
++};
+ 
+-function roundUpPow10(x) {
+-  var y = Math.round(Math.log(Math.abs(x)) / Math.log(10))
+-  if(y < 0) {
+-    var base = Math.round(Math.pow(10, -y))
+-    return Math.ceil(x*base) / base
+-  } else if(y > 0) {
+-    var base = Math.round(Math.pow(10, y))
+-    return Math.ceil(x/base) * base
+-  }
+-  return Math.ceil(x)
+-}
++/**
++ * Generates a perspective projection matrix with the given bounds
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {number} fovy Vertical field of view in radians
++ * @param {number} aspect Aspect ratio. typically viewport width/height
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.perspective = function (out, fovy, aspect, near, far) {
++    var f = 1.0 / Math.tan(fovy / 2),
++        nf = 1 / (near - far);
++    out[0] = f / aspect;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = f;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = (far + near) * nf;
++    out[11] = -1;
++    out[12] = 0;
++    out[13] = 0;
++    out[14] = (2 * far * near) * nf;
++    out[15] = 0;
++    return out;
++};
+ 
+-function defaultBool(x) {
+-  if(typeof x === 'boolean') {
+-    return x
+-  }
+-  return true
++/**
++ * Generates a perspective projection matrix with the given field of view.
++ * This is primarily useful for generating projection matrices to be used
++ * with the still experiemental WebVR API.
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {Object} fov Object containing the following values: upDegrees, downDegrees, leftDegrees, rightDegrees
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.perspectiveFromFieldOfView = function (out, fov, near, far) {
++    var upTan = Math.tan(fov.upDegrees * Math.PI/180.0),
++        downTan = Math.tan(fov.downDegrees * Math.PI/180.0),
++        leftTan = Math.tan(fov.leftDegrees * Math.PI/180.0),
++        rightTan = Math.tan(fov.rightDegrees * Math.PI/180.0),
++        xScale = 2.0 / (leftTan + rightTan),
++        yScale = 2.0 / (upTan + downTan);
++
++    out[0] = xScale;
++    out[1] = 0.0;
++    out[2] = 0.0;
++    out[3] = 0.0;
++    out[4] = 0.0;
++    out[5] = yScale;
++    out[6] = 0.0;
++    out[7] = 0.0;
++    out[8] = -((leftTan - rightTan) * xScale * 0.5);
++    out[9] = ((upTan - downTan) * yScale * 0.5);
++    out[10] = far / (near - far);
++    out[11] = -1.0;
++    out[12] = 0.0;
++    out[13] = 0.0;
++    out[14] = (far * near) / (near - far);
++    out[15] = 0.0;
++    return out;
+ }
+ 
+-function createScene(options) {
+-  options = options || {}
++/**
++ * Generates a orthogonal projection matrix with the given bounds
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {number} left Left bound of the frustum
++ * @param {number} right Right bound of the frustum
++ * @param {number} bottom Bottom bound of the frustum
++ * @param {number} top Top bound of the frustum
++ * @param {number} near Near bound of the frustum
++ * @param {number} far Far bound of the frustum
++ * @returns {mat4} out
++ */
++mat4.ortho = function (out, left, right, bottom, top, near, far) {
++    var lr = 1 / (left - right),
++        bt = 1 / (bottom - top),
++        nf = 1 / (near - far);
++    out[0] = -2 * lr;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    out[4] = 0;
++    out[5] = -2 * bt;
++    out[6] = 0;
++    out[7] = 0;
++    out[8] = 0;
++    out[9] = 0;
++    out[10] = 2 * nf;
++    out[11] = 0;
++    out[12] = (left + right) * lr;
++    out[13] = (top + bottom) * bt;
++    out[14] = (far + near) * nf;
++    out[15] = 1;
++    return out;
++};
++
++/**
++ * Generates a look-at matrix with the given eye position, focal point, and up axis
++ *
++ * @param {mat4} out mat4 frustum matrix will be written into
++ * @param {vec3} eye Position of the viewer
++ * @param {vec3} center Point the viewer is looking at
++ * @param {vec3} up vec3 pointing up
++ * @returns {mat4} out
++ */
++mat4.lookAt = function (out, eye, center, up) {
++    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
++        eyex = eye[0],
++        eyey = eye[1],
++        eyez = eye[2],
++        upx = up[0],
++        upy = up[1],
++        upz = up[2],
++        centerx = center[0],
++        centery = center[1],
++        centerz = center[2];
++
++    if (Math.abs(eyex - centerx) < glMatrix.EPSILON &&
++        Math.abs(eyey - centery) < glMatrix.EPSILON &&
++        Math.abs(eyez - centerz) < glMatrix.EPSILON) {
++        return mat4.identity(out);
++    }
+ 
+-  var stopped = false
++    z0 = eyex - centerx;
++    z1 = eyey - centery;
++    z2 = eyez - centerz;
+ 
+-  var pixelRatio = options.pixelRatio || parseFloat(window.devicePixelRatio)
++    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
++    z0 *= len;
++    z1 *= len;
++    z2 *= len;
+ 
+-  var canvas = options.canvas
+-  if(!canvas) {
+-    canvas = document.createElement('canvas')
+-    if(options.container) {
+-      var container = options.container
+-      container.appendChild(canvas)
++    x0 = upy * z2 - upz * z1;
++    x1 = upz * z0 - upx * z2;
++    x2 = upx * z1 - upy * z0;
++    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
++    if (!len) {
++        x0 = 0;
++        x1 = 0;
++        x2 = 0;
+     } else {
+-      document.body.appendChild(canvas)
++        len = 1 / len;
++        x0 *= len;
++        x1 *= len;
++        x2 *= len;
+     }
+-  }
+-
+-  var gl = options.gl
+-  if(!gl) {
+-    gl = getContext(canvas,
+-      options.glOptions || {
+-        premultipliedAlpha: true,
+-        antialias: true
+-      })
+-  }
+-  if(!gl) {
+-    throw new Error('webgl not supported')
+-  }
+-
+-  //Initial bounds
+-  var bounds = options.bounds || [[-10,-10,-10], [10,10,10]]
+ 
+-  //Create selection
+-  var selection = new MouseSelect()
++    y0 = z1 * x2 - z2 * x1;
++    y1 = z2 * x0 - z0 * x2;
++    y2 = z0 * x1 - z1 * x0;
+ 
+-  //Accumulation buffer
+-  var accumBuffer = createFBO(gl,
+-    [gl.drawingBufferWidth, gl.drawingBufferHeight], {
+-      preferFloat: true
+-    })
++    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
++    if (!len) {
++        y0 = 0;
++        y1 = 0;
++        y2 = 0;
++    } else {
++        len = 1 / len;
++        y0 *= len;
++        y1 *= len;
++        y2 *= len;
++    }
+ 
+-  var accumShader = createShader(gl)
++    out[0] = x0;
++    out[1] = y0;
++    out[2] = z0;
++    out[3] = 0;
++    out[4] = x1;
++    out[5] = y1;
++    out[6] = z1;
++    out[7] = 0;
++    out[8] = x2;
++    out[9] = y2;
++    out[10] = z2;
++    out[11] = 0;
++    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
++    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
++    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
++    out[15] = 1;
+ 
+-  //Create a camera
+-  var cameraOptions = options.camera || {
+-    eye:    [2,0,0],
+-    center: [0,0,0],
+-    up:     [0,1,0],
+-    zoomMin: 0.1,
+-    zoomMax: 100,
+-    mode:    'turntable'
+-  }
++    return out;
++};
+ 
+-  //Create axes
+-  var axesOptions = options.axes || {}
+-  var axes = createAxes(gl, axesOptions)
+-  axes.enable = !axesOptions.disable
++/**
++ * Returns a string representation of a mat4
++ *
++ * @param {mat4} mat matrix to represent as a string
++ * @returns {String} string representation of the matrix
++ */
++mat4.str = function (a) {
++    return 'mat4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ', ' +
++                    a[4] + ', ' + a[5] + ', ' + a[6] + ', ' + a[7] + ', ' +
++                    a[8] + ', ' + a[9] + ', ' + a[10] + ', ' + a[11] + ', ' +
++                    a[12] + ', ' + a[13] + ', ' + a[14] + ', ' + a[15] + ')';
++};
+ 
+-  //Create spikes
+-  var spikeOptions = options.spikes || {}
+-  var spikes = createSpikes(gl, spikeOptions)
++/**
++ * Returns Frobenius norm of a mat4
++ *
++ * @param {mat4} a the matrix to calculate Frobenius norm of
++ * @returns {Number} Frobenius norm
++ */
++mat4.frob = function (a) {
++    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2) + Math.pow(a[9], 2) + Math.pow(a[10], 2) + Math.pow(a[11], 2) + Math.pow(a[12], 2) + Math.pow(a[13], 2) + Math.pow(a[14], 2) + Math.pow(a[15], 2) ))
++};
+ 
+-  //Object list is empty initially
+-  var objects         = []
+-  var pickBufferIds   = []
+-  var pickBufferCount = []
+-  var pickBuffers     = []
++/**
++ * Adds two mat4's
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++mat4.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    out[4] = a[4] + b[4];
++    out[5] = a[5] + b[5];
++    out[6] = a[6] + b[6];
++    out[7] = a[7] + b[7];
++    out[8] = a[8] + b[8];
++    out[9] = a[9] + b[9];
++    out[10] = a[10] + b[10];
++    out[11] = a[11] + b[11];
++    out[12] = a[12] + b[12];
++    out[13] = a[13] + b[13];
++    out[14] = a[14] + b[14];
++    out[15] = a[15] + b[15];
++    return out;
++};
+ 
+-  //Dirty flag, skip redraw if scene static
+-  var dirty       = true
+-  var pickDirty   = true
++/**
++ * Subtracts matrix b from matrix a
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @returns {mat4} out
++ */
++mat4.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    out[4] = a[4] - b[4];
++    out[5] = a[5] - b[5];
++    out[6] = a[6] - b[6];
++    out[7] = a[7] - b[7];
++    out[8] = a[8] - b[8];
++    out[9] = a[9] - b[9];
++    out[10] = a[10] - b[10];
++    out[11] = a[11] - b[11];
++    out[12] = a[12] - b[12];
++    out[13] = a[13] - b[13];
++    out[14] = a[14] - b[14];
++    out[15] = a[15] - b[15];
++    return out;
++};
+ 
+-  var projection     = new Array(16)
+-  var model          = new Array(16)
++/**
++ * Alias for {@link mat4.subtract}
++ * @function
++ */
++mat4.sub = mat4.subtract;
+ 
+-  var cameraParams = {
+-    view:         null,
+-    projection:   projection,
+-    model:        model
+-  }
++/**
++ * Multiply each element of the matrix by a scalar.
++ *
++ * @param {mat4} out the receiving matrix
++ * @param {mat4} a the matrix to scale
++ * @param {Number} b amount to scale the matrix's elements by
++ * @returns {mat4} out
++ */
++mat4.multiplyScalar = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    out[4] = a[4] * b;
++    out[5] = a[5] * b;
++    out[6] = a[6] * b;
++    out[7] = a[7] * b;
++    out[8] = a[8] * b;
++    out[9] = a[9] * b;
++    out[10] = a[10] * b;
++    out[11] = a[11] * b;
++    out[12] = a[12] * b;
++    out[13] = a[13] * b;
++    out[14] = a[14] * b;
++    out[15] = a[15] * b;
++    return out;
++};
+ 
+-  var pickDirty = true
++/**
++ * Adds two mat4's after multiplying each element of the second operand by a scalar value.
++ *
++ * @param {mat4} out the receiving vector
++ * @param {mat4} a the first operand
++ * @param {mat4} b the second operand
++ * @param {Number} scale the amount to scale b's elements by before adding
++ * @returns {mat4} out
++ */
++mat4.multiplyScalarAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    out[4] = a[4] + (b[4] * scale);
++    out[5] = a[5] + (b[5] * scale);
++    out[6] = a[6] + (b[6] * scale);
++    out[7] = a[7] + (b[7] * scale);
++    out[8] = a[8] + (b[8] * scale);
++    out[9] = a[9] + (b[9] * scale);
++    out[10] = a[10] + (b[10] * scale);
++    out[11] = a[11] + (b[11] * scale);
++    out[12] = a[12] + (b[12] * scale);
++    out[13] = a[13] + (b[13] * scale);
++    out[14] = a[14] + (b[14] * scale);
++    out[15] = a[15] + (b[15] * scale);
++    return out;
++};
+ 
+-  var viewShape = [ gl.drawingBufferWidth, gl.drawingBufferHeight ]
++/**
++ * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {mat4} a The first matrix.
++ * @param {mat4} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat4.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && 
++           a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && 
++           a[8] === b[8] && a[9] === b[9] && a[10] === b[10] && a[11] === b[11] &&
++           a[12] === b[12] && a[13] === b[13] && a[14] === b[14] && a[15] === b[15];
++};
+ 
+-  //Create scene object
+-  var scene = {
+-    gl:           gl,
+-    contextLost:  false,
+-    pixelRatio:   options.pixelRatio || parseFloat(window.devicePixelRatio),
+-    canvas:       canvas,
+-    selection:    selection,
+-    camera:       createCamera(canvas, cameraOptions),
+-    axes:         axes,
+-    axesPixels:   null,
+-    spikes:       spikes,
+-    bounds:       bounds,
+-    objects:      objects,
+-    shape:        viewShape,
+-    aspect:       options.aspectRatio || [1,1,1],
+-    pickRadius:   options.pickRadius || 10,
+-    zNear:        options.zNear || 0.01,
+-    zFar:         options.zFar  || 1000,
+-    fovy:         options.fovy  || Math.PI/4,
+-    clearColor:   options.clearColor || [0,0,0,0],
+-    autoResize:   defaultBool(options.autoResize),
+-    autoBounds:   defaultBool(options.autoBounds),
+-    autoScale:    !!options.autoScale,
+-    autoCenter:   defaultBool(options.autoCenter),
+-    clipToBounds: defaultBool(options.clipToBounds),
+-    snapToData:   !!options.snapToData,
+-    onselect:     options.onselect || null,
+-    onrender:     options.onrender || null,
+-    onclick:      options.onclick  || null,
+-    cameraParams: cameraParams,
+-    oncontextloss: null,
+-    mouseListener: null
+-  }
++/**
++ * Returns whether or not the matrices have approximately the same elements in the same position.
++ *
++ * @param {mat4} a The first matrix.
++ * @param {mat4} b The second matrix.
++ * @returns {Boolean} True if the matrices are equal, false otherwise.
++ */
++mat4.equals = function (a, b) {
++    var a0  = a[0],  a1  = a[1],  a2  = a[2],  a3  = a[3],
++        a4  = a[4],  a5  = a[5],  a6  = a[6],  a7  = a[7], 
++        a8  = a[8],  a9  = a[9],  a10 = a[10], a11 = a[11], 
++        a12 = a[12], a13 = a[13], a14 = a[14], a15 = a[15];
+ 
+-  var pickShape = [ (gl.drawingBufferWidth/scene.pixelRatio)|0, (gl.drawingBufferHeight/scene.pixelRatio)|0 ]
++    var b0  = b[0],  b1  = b[1],  b2  = b[2],  b3  = b[3],
++        b4  = b[4],  b5  = b[5],  b6  = b[6],  b7  = b[7], 
++        b8  = b[8],  b9  = b[9],  b10 = b[10], b11 = b[11], 
++        b12 = b[12], b13 = b[13], b14 = b[14], b15 = b[15];
+ 
+-  function resizeListener() {
+-    if(stopped) {
+-      return
+-    }
+-    if(!scene.autoResize) {
+-      return
+-    }
+-    var parent = canvas.parentNode
+-    var width  = 1
+-    var height = 1
+-    if(parent && parent !== document.body) {
+-      width  = parent.clientWidth
+-      height = parent.clientHeight
+-    } else {
+-      width  = window.innerWidth
+-      height = window.innerHeight
+-    }
+-    var nextWidth  = Math.ceil(width  * scene.pixelRatio)|0
+-    var nextHeight = Math.ceil(height * scene.pixelRatio)|0
+-    if(nextWidth !== canvas.width || nextHeight !== canvas.height) {
+-      canvas.width   = nextWidth
+-      canvas.height  = nextHeight
+-      var style = canvas.style
+-      style.position = style.position || 'absolute'
+-      style.left     = '0px'
+-      style.top      = '0px'
+-      style.width    = width  + 'px'
+-      style.height   = height + 'px'
+-      dirty = true
+-    }
+-  }
+-  if(scene.autoResize) {
+-    resizeListener()
+-  }
+-  window.addEventListener('resize', resizeListener)
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
++            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
++            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
++            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
++            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
++            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)) &&
++            Math.abs(a9 - b9) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a9), Math.abs(b9)) &&
++            Math.abs(a10 - b10) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a10), Math.abs(b10)) &&
++            Math.abs(a11 - b11) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a11), Math.abs(b11)) &&
++            Math.abs(a12 - b12) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a12), Math.abs(b12)) &&
++            Math.abs(a13 - b13) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a13), Math.abs(b13)) &&
++            Math.abs(a14 - b14) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a14), Math.abs(b14)) &&
++            Math.abs(a15 - b15) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a15), Math.abs(b15)));
++};
+ 
+-  function reallocPickIds() {
+-    var numObjs = objects.length
+-    var numPick = pickBuffers.length
+-    for(var i=0; i<numPick; ++i) {
+-      pickBufferCount[i] = 0
+-    }
+-    obj_loop:
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
+-      var pickCount = obj.pickSlots
+-      if(!pickCount) {
+-        pickBufferIds[i] = -1
+-        continue
+-      }
+-      for(var j=0; j<numPick; ++j) {
+-        if(pickBufferCount[j] + pickCount < 255) {
+-          pickBufferIds[i] = j
+-          obj.setPickBase(pickBufferCount[j]+1)
+-          pickBufferCount[j] += pickCount
+-          continue obj_loop
+-        }
+-      }
+-      //Create new pick buffer
+-      var nbuffer = createSelect(gl, viewShape)
+-      pickBufferIds[i] = numPick
+-      pickBuffers.push(nbuffer)
+-      pickBufferCount.push(pickCount)
+-      obj.setPickBase(1)
+-      numPick += 1
+-    }
+-    while(numPick > 0 && pickBufferCount[numPick-1] === 0) {
+-      pickBufferCount.pop()
+-      pickBuffers.pop().dispose()
+-    }
+-  }
+ 
+-  scene.update = function(options) {
+-    if(stopped) {
+-      return
+-    }
+-    options = options || {}
+-    dirty = true
+-    pickDirty = true
+-  }
+ 
+-  scene.add = function(obj) {
+-    if(stopped) {
+-      return
+-    }
+-    obj.axes = axes
+-    objects.push(obj)
+-    pickBufferIds.push(-1)
+-    dirty = true
+-    pickDirty = true
+-    reallocPickIds()
+-  }
++module.exports = mat4;
+ 
+-  scene.remove = function(obj) {
+-    if(stopped) {
+-      return
+-    }
+-    var idx = objects.indexOf(obj)
+-    if(idx < 0) {
+-      return
+-    }
+-    objects.splice(idx, 1)
+-    pickBufferIds.pop()
+-    dirty = true
+-    pickDirty = true
+-    reallocPickIds()
+-  }
++},{"./common.js":155}],160:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-  scene.dispose = function() {
+-    if(stopped) {
+-      return
+-    }
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-    stopped = true
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-    window.removeEventListener('resize', resizeListener)
+-    canvas.removeEventListener('webglcontextlost', checkContextLoss)
+-    scene.mouseListener.enabled = false
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-    if(scene.contextLost) {
+-      return
+-    }
++var glMatrix = require("./common.js");
++var mat3 = require("./mat3.js");
++var vec3 = require("./vec3.js");
++var vec4 = require("./vec4.js");
+ 
+-    //Destroy objects
+-    axes.dispose()
+-    spikes.dispose()
+-    for(var i=0; i<objects.length; ++i) {
+-      objects[i].dispose()
+-    }
++/**
++ * @class Quaternion
++ * @name quat
++ */
++var quat = {};
+ 
+-    //Clean up buffers
+-    accumBuffer.dispose()
+-    for(var i=0; i<pickBuffers.length; ++i) {
+-      pickBuffers[i].dispose()
+-    }
++/**
++ * Creates a new identity quat
++ *
++ * @returns {quat} a new quaternion
++ */
++quat.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
++};
+ 
+-    //Clean up shaders
+-    accumShader.dispose()
++/**
++ * Sets a quaternion to represent the shortest rotation from one
++ * vector to another.
++ *
++ * Both vectors are assumed to be unit length.
++ *
++ * @param {quat} out the receiving quaternion.
++ * @param {vec3} a the initial vector
++ * @param {vec3} b the destination vector
++ * @returns {quat} out
++ */
++quat.rotationTo = (function() {
++    var tmpvec3 = vec3.create();
++    var xUnitVec3 = vec3.fromValues(1,0,0);
++    var yUnitVec3 = vec3.fromValues(0,1,0);
+ 
+-    //Release all references
+-    gl = null
+-    axes = null
+-    spikes = null
+-    objects = []
+-  }
++    return function(out, a, b) {
++        var dot = vec3.dot(a, b);
++        if (dot < -0.999999) {
++            vec3.cross(tmpvec3, xUnitVec3, a);
++            if (vec3.length(tmpvec3) < 0.000001)
++                vec3.cross(tmpvec3, yUnitVec3, a);
++            vec3.normalize(tmpvec3, tmpvec3);
++            quat.setAxisAngle(out, tmpvec3, Math.PI);
++            return out;
++        } else if (dot > 0.999999) {
++            out[0] = 0;
++            out[1] = 0;
++            out[2] = 0;
++            out[3] = 1;
++            return out;
++        } else {
++            vec3.cross(tmpvec3, a, b);
++            out[0] = tmpvec3[0];
++            out[1] = tmpvec3[1];
++            out[2] = tmpvec3[2];
++            out[3] = 1 + dot;
++            return quat.normalize(out, out);
++        }
++    };
++})();
+ 
+-  //Update mouse position
+-  var mouseRotating = false
++/**
++ * Sets the specified quaternion with values corresponding to the given
++ * axes. Each axis is a vec3 and is expected to be unit length and
++ * perpendicular to all other specified axes.
++ *
++ * @param {vec3} view  the vector representing the viewing direction
++ * @param {vec3} right the vector representing the local "right" direction
++ * @param {vec3} up    the vector representing the local "up" direction
++ * @returns {quat} out
++ */
++quat.setAxes = (function() {
++    var matr = mat3.create();
+ 
+-  var prevButtons = 0
++    return function(out, view, right, up) {
++        matr[0] = right[0];
++        matr[3] = right[1];
++        matr[6] = right[2];
+ 
+-  scene.mouseListener = mouseChange(canvas, function(buttons, x, y) {
+-    if(stopped) {
+-      return
+-    }
++        matr[1] = up[0];
++        matr[4] = up[1];
++        matr[7] = up[2];
+ 
+-    var numPick = pickBuffers.length
+-    var numObjs = objects.length
+-    var prevObj = selection.object
++        matr[2] = -view[0];
++        matr[5] = -view[1];
++        matr[8] = -view[2];
+ 
+-    selection.distance = Infinity
+-    selection.mouse[0] = x
+-    selection.mouse[1] = y
+-    selection.object = null
+-    selection.screen = null
+-    selection.dataCoordinate = selection.dataPosition = null
++        return quat.normalize(out, quat.fromMat3(out, matr));
++    };
++})();
+ 
+-    var change = false
++/**
++ * Creates a new quat initialized with values from an existing quaternion
++ *
++ * @param {quat} a quaternion to clone
++ * @returns {quat} a new quaternion
++ * @function
++ */
++quat.clone = vec4.clone;
+ 
+-    if(buttons && prevButtons) {
+-      mouseRotating = true
+-    } else {
+-      if(mouseRotating) {
+-        pickDirty = true
+-      }
+-      mouseRotating = false
++/**
++ * Creates a new quat initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {quat} a new quaternion
++ * @function
++ */
++quat.fromValues = vec4.fromValues;
+ 
+-      for(var i=0; i<numPick; ++i) {
+-        var result = pickBuffers[i].query(x, pickShape[1] - y - 1, scene.pickRadius)
+-        if(result) {
+-          if(result.distance > selection.distance) {
+-            continue
+-          }
+-          for(var j=0; j<numObjs; ++j) {
+-            var obj = objects[j]
+-            if(pickBufferIds[j] !== i) {
+-              continue
+-            }
+-            var objPick = obj.pick(result)
+-            if(objPick) {
+-              selection.buttons        = buttons
+-              selection.screen         = result.coord
+-              selection.distance       = result.distance
+-              selection.object         = obj
+-              selection.index          = objPick.distance
+-              selection.dataPosition   = objPick.position
+-              selection.dataCoordinate = objPick.dataCoordinate
+-              selection.data           = objPick
+-              change = true
+-            }
+-          }
+-        }
+-      }
+-    }
++/**
++ * Copy the values from one quat to another
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the source quaternion
++ * @returns {quat} out
++ * @function
++ */
++quat.copy = vec4.copy;
+ 
+-    if(prevObj && prevObj !== selection.object) {
+-      if(prevObj.highlight) {
+-        prevObj.highlight(null)
+-      }
+-      dirty = true
+-    }
+-    if(selection.object) {
+-      if(selection.object.highlight) {
+-        selection.object.highlight(selection.data)
+-      }
+-      dirty = true
+-    }
++/**
++ * Set the components of a quat to the given values
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {quat} out
++ * @function
++ */
++quat.set = vec4.set;
+ 
+-    change = change || (selection.object !== prevObj)
+-    if(change && scene.onselect) {
+-      scene.onselect(selection)
+-    }
++/**
++ * Set a quat to the identity quaternion
++ *
++ * @param {quat} out the receiving quaternion
++ * @returns {quat} out
++ */
++quat.identity = function(out) {
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 1;
++    return out;
++};
+ 
+-    if((buttons & 1) && !(prevButtons & 1) && scene.onclick) {
+-      scene.onclick(selection)
+-    }
+-    prevButtons = buttons
+-  })
++/**
++ * Sets a quat from the given angle and rotation axis,
++ * then returns it.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {vec3} axis the axis around which to rotate
++ * @param {Number} rad the angle in radians
++ * @returns {quat} out
++ **/
++quat.setAxisAngle = function(out, axis, rad) {
++    rad = rad * 0.5;
++    var s = Math.sin(rad);
++    out[0] = s * axis[0];
++    out[1] = s * axis[1];
++    out[2] = s * axis[2];
++    out[3] = Math.cos(rad);
++    return out;
++};
+ 
+-  function checkContextLoss() {
+-    if(scene.contextLost) {
+-      return true
+-    }
+-    if(gl.isContextLost()) {
+-      scene.contextLost = true
+-      scene.mouseListener.enabled = false
+-      scene.selection.object = null
+-      if(scene.oncontextloss) {
+-        scene.oncontextloss()
+-      }
++/**
++ * Gets the rotation axis and angle for a given
++ *  quaternion. If a quaternion is created with
++ *  setAxisAngle, this method will return the same
++ *  values as providied in the original parameter list
++ *  OR functionally equivalent values.
++ * Example: The quaternion formed by axis [0, 0, 1] and
++ *  angle -90 is the same as the quaternion formed by
++ *  [0, 0, 1] and 270. This method favors the latter.
++ * @param  {vec3} out_axis  Vector receiving the axis of rotation
++ * @param  {quat} q     Quaternion to be decomposed
++ * @return {Number}     Angle, in radians, of the rotation
++ */
++quat.getAxisAngle = function(out_axis, q) {
++    var rad = Math.acos(q[3]) * 2.0;
++    var s = Math.sin(rad / 2.0);
++    if (s != 0.0) {
++        out_axis[0] = q[0] / s;
++        out_axis[1] = q[1] / s;
++        out_axis[2] = q[2] / s;
++    } else {
++        // If s is zero, return any axis (no rotation - axis does not matter)
++        out_axis[0] = 1;
++        out_axis[1] = 0;
++        out_axis[2] = 0;
+     }
+-  }
++    return rad;
++};
+ 
+-  canvas.addEventListener('webglcontextlost', checkContextLoss)
++/**
++ * Adds two quat's
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @returns {quat} out
++ * @function
++ */
++quat.add = vec4.add;
+ 
+-  //Render the scene for mouse picking
+-  function renderPick() {
+-    if(checkContextLoss()) {
+-      return
+-    }
++/**
++ * Multiplies two quat's
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @returns {quat} out
++ */
++quat.multiply = function(out, a, b) {
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bx = b[0], by = b[1], bz = b[2], bw = b[3];
+ 
+-    gl.colorMask(true, true, true, true)
+-    gl.depthMask(true)
+-    gl.disable(gl.BLEND)
+-    gl.enable(gl.DEPTH_TEST)
++    out[0] = ax * bw + aw * bx + ay * bz - az * by;
++    out[1] = ay * bw + aw * by + az * bx - ax * bz;
++    out[2] = az * bw + aw * bz + ax * by - ay * bx;
++    out[3] = aw * bw - ax * bx - ay * by - az * bz;
++    return out;
++};
+ 
+-    var numObjs = objects.length
+-    var numPick = pickBuffers.length
+-    for(var j=0; j<numPick; ++j) {
+-      var buf = pickBuffers[j]
+-      buf.shape = pickShape
+-      buf.begin()
+-      for(var i=0; i<numObjs; ++i) {
+-        if(pickBufferIds[i] !== j) {
+-          continue
+-        }
+-        var obj = objects[i]
+-        if(obj.drawPick) {
+-          obj.pixelRatio = 1
+-          obj.drawPick(cameraParams)
+-        }
+-      }
+-      buf.end()
+-    }
+-  }
++/**
++ * Alias for {@link quat.multiply}
++ * @function
++ */
++quat.mul = quat.multiply;
+ 
+-  var nBounds = [
+-    [ Infinity, Infinity, Infinity],
+-    [-Infinity,-Infinity,-Infinity]]
++/**
++ * Scales a quat by a scalar number
++ *
++ * @param {quat} out the receiving vector
++ * @param {quat} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {quat} out
++ * @function
++ */
++quat.scale = vec4.scale;
+ 
+-  var prevBounds = [nBounds[0].slice(), nBounds[1].slice()]
++/**
++ * Rotates a quaternion by the given angle about the X axis
++ *
++ * @param {quat} out quat receiving operation result
++ * @param {quat} a quat to rotate
++ * @param {number} rad angle (in radians) to rotate
++ * @returns {quat} out
++ */
++quat.rotateX = function (out, a, rad) {
++    rad *= 0.5; 
+ 
+-  function redraw() {
+-    if(checkContextLoss()) {
+-      return
+-    }
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bx = Math.sin(rad), bw = Math.cos(rad);
+ 
+-    resizeListener()
++    out[0] = ax * bw + aw * bx;
++    out[1] = ay * bw + az * bx;
++    out[2] = az * bw - ay * bx;
++    out[3] = aw * bw - ax * bx;
++    return out;
++};
+ 
+-    //Tick camera
+-    var cameraMoved = scene.camera.tick()
+-    cameraParams.view = scene.camera.matrix
+-    dirty     = dirty || cameraMoved
+-    pickDirty = pickDirty || cameraMoved
++/**
++ * Rotates a quaternion by the given angle about the Y axis
++ *
++ * @param {quat} out quat receiving operation result
++ * @param {quat} a quat to rotate
++ * @param {number} rad angle (in radians) to rotate
++ * @returns {quat} out
++ */
++quat.rotateY = function (out, a, rad) {
++    rad *= 0.5; 
+ 
+-      //Set pixel ratio
+-    axes.pixelRatio   = scene.pixelRatio
+-    spikes.pixelRatio = scene.pixelRatio
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        by = Math.sin(rad), bw = Math.cos(rad);
+ 
+-    //Check if any objects changed, recalculate bounds
+-    var numObjs = objects.length
+-    var lo = nBounds[0]
+-    var hi = nBounds[1]
+-    lo[0] = lo[1] = lo[2] =  Infinity
+-    hi[0] = hi[1] = hi[2] = -Infinity
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
++    out[0] = ax * bw - az * by;
++    out[1] = ay * bw + aw * by;
++    out[2] = az * bw + ax * by;
++    out[3] = aw * bw - ay * by;
++    return out;
++};
+ 
+-      //Set the axes properties for each object
+-      obj.pixelRatio = scene.pixelRatio
+-      obj.axes = scene.axes
++/**
++ * Rotates a quaternion by the given angle about the Z axis
++ *
++ * @param {quat} out quat receiving operation result
++ * @param {quat} a quat to rotate
++ * @param {number} rad angle (in radians) to rotate
++ * @returns {quat} out
++ */
++quat.rotateZ = function (out, a, rad) {
++    rad *= 0.5; 
+ 
+-      dirty = dirty || !!obj.dirty
+-      pickDirty = pickDirty || !!obj.dirty
+-      var obb = obj.bounds
+-      if(obb) {
+-        var olo = obb[0]
+-        var ohi = obb[1]
+-        for(var j=0; j<3; ++j) {
+-          lo[j] = Math.min(lo[j], olo[j])
+-          hi[j] = Math.max(hi[j], ohi[j])
+-        }
+-      }
+-    }
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bz = Math.sin(rad), bw = Math.cos(rad);
+ 
+-    //Recalculate bounds
+-    var bounds = scene.bounds
+-    if(scene.autoBounds) {
+-      for(var j=0; j<3; ++j) {
+-        if(hi[j] < lo[j]) {
+-          lo[j] = -1
+-          hi[j] = 1
+-        } else {
+-          if(lo[j] === hi[j]) {
+-            lo[j] -= 1
+-            hi[j] += 1
+-          }
+-          var padding = 0.05 * (hi[j] - lo[j])
+-          lo[j] = lo[j] - padding
+-          hi[j] = hi[j] + padding
+-        }
+-        bounds[0][j] = lo[j]
+-        bounds[1][j] = hi[j]
+-      }
+-    }
++    out[0] = ax * bw + ay * bz;
++    out[1] = ay * bw - ax * bz;
++    out[2] = az * bw + aw * bz;
++    out[3] = aw * bw - az * bz;
++    return out;
++};
+ 
+-    var boundsChanged = false
+-    for(var j=0; j<3; ++j) {
+-        boundsChanged = boundsChanged ||
+-            (prevBounds[0][j] !== bounds[0][j])  ||
+-            (prevBounds[1][j] !== bounds[1][j])
+-        prevBounds[0][j] = bounds[0][j]
+-        prevBounds[1][j] = bounds[1][j]
+-    }
++/**
++ * Calculates the W component of a quat from the X, Y, and Z components.
++ * Assumes that quaternion is 1 unit in length.
++ * Any existing W component will be ignored.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quat to calculate W component of
++ * @returns {quat} out
++ */
++quat.calculateW = function (out, a) {
++    var x = a[0], y = a[1], z = a[2];
+ 
+-    if(boundsChanged) {
+-      var tickSpacing = [0,0,0]
+-      for(var i=0; i<3; ++i) {
+-        tickSpacing[i] = roundUpPow10((bounds[1][i]-bounds[0][i]) / 10.0)
+-      }
+-      if(axes.autoTicks) {
+-        axes.update({
+-          bounds: bounds,
+-          tickSpacing: tickSpacing
+-        })
+-      } else {
+-        axes.update({
+-          bounds: bounds
+-        })
+-      }
+-    }
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    out[3] = Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));
++    return out;
++};
+ 
+-    //Recalculate bounds
+-    pickDirty = pickDirty || boundsChanged
+-    dirty = dirty || boundsChanged
++/**
++ * Calculates the dot product of two quat's
++ *
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @returns {Number} dot product of a and b
++ * @function
++ */
++quat.dot = vec4.dot;
+ 
+-    //Get scene
+-    var width  = gl.drawingBufferWidth
+-    var height = gl.drawingBufferHeight
+-    viewShape[0] = width
+-    viewShape[1] = height
+-    pickShape[0] = Math.max(width/scene.pixelRatio, 1)|0
+-    pickShape[1] = Math.max(height/scene.pixelRatio, 1)|0
++/**
++ * Performs a linear interpolation between two quat's
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {quat} out
++ * @function
++ */
++quat.lerp = vec4.lerp;
++
++/**
++ * Performs a spherical linear interpolation between two quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {quat} out
++ */
++quat.slerp = function (out, a, b, t) {
++    // benchmarks:
++    //    http://jsperf.com/quaternion-slerp-implementations
+ 
+-    //Compute camera parameters
+-    perspective(projection,
+-      scene.fovy,
+-      width/height,
+-      scene.zNear,
+-      scene.zFar)
++    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++        bx = b[0], by = b[1], bz = b[2], bw = b[3];
+ 
+-    //Compute model matrix
+-    for(var i=0; i<16; ++i) {
+-      model[i] = 0
+-    }
+-    model[15] = 1
++    var        omega, cosom, sinom, scale0, scale1;
+ 
+-    var maxS = 0
+-    for(var i=0; i<3; ++i) {
+-      maxS = Math.max(maxS, bounds[1][i] - bounds[0][i])
++    // calc cosine
++    cosom = ax * bx + ay * by + az * bz + aw * bw;
++    // adjust signs (if necessary)
++    if ( cosom < 0.0 ) {
++        cosom = -cosom;
++        bx = - bx;
++        by = - by;
++        bz = - bz;
++        bw = - bw;
+     }
+-
+-    for(var i=0; i<3; ++i) {
+-      if(scene.autoScale) {
+-        model[5*i] = scene.aspect[i] / (bounds[1][i] - bounds[0][i])
+-      } else {
+-        model[5*i] = 1  / maxS
+-      }
+-      if(scene.autoCenter) {
+-        model[12+i] = -model[5*i] * 0.5 * (bounds[0][i] + bounds[1][i])
+-      }
++    // calculate coefficients
++    if ( (1.0 - cosom) > 0.000001 ) {
++        // standard case (slerp)
++        omega  = Math.acos(cosom);
++        sinom  = Math.sin(omega);
++        scale0 = Math.sin((1.0 - t) * omega) / sinom;
++        scale1 = Math.sin(t * omega) / sinom;
++    } else {        
++        // "from" and "to" quaternions are very close 
++        //  ... so we can do a linear interpolation
++        scale0 = 1.0 - t;
++        scale1 = t;
+     }
++    // calculate final values
++    out[0] = scale0 * ax + scale1 * bx;
++    out[1] = scale0 * ay + scale1 * by;
++    out[2] = scale0 * az + scale1 * bz;
++    out[3] = scale0 * aw + scale1 * bw;
++    
++    return out;
++};
+ 
+-    //Apply axes/clip bounds
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
+-
+-      //Set axes bounds
+-      obj.axesBounds = bounds
++/**
++ * Performs a spherical linear interpolation with two control points
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {quat} c the third operand
++ * @param {quat} d the fourth operand
++ * @param {Number} t interpolation amount
++ * @returns {quat} out
++ */
++quat.sqlerp = (function () {
++  var temp1 = quat.create();
++  var temp2 = quat.create();
++  
++  return function (out, a, b, c, d, t) {
++    quat.slerp(temp1, a, d, t);
++    quat.slerp(temp2, b, c, t);
++    quat.slerp(out, temp1, temp2, 2 * t * (1 - t));
++    
++    return out;
++  };
++}());
+ 
+-      //Set clip bounds
+-      if(scene.clipToBounds) {
+-        obj.clipBounds = bounds
+-      }
+-    }
++/**
++ * Calculates the inverse of a quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quat to calculate inverse of
++ * @returns {quat} out
++ */
++quat.invert = function(out, a) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++        dot = a0*a0 + a1*a1 + a2*a2 + a3*a3,
++        invDot = dot ? 1.0/dot : 0;
++    
++    // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0
+ 
+-    //Set spike parameters
+-    if(selection.object) {
+-      if(scene.snapToData) {
+-        spikes.position = selection.dataCoordinate
+-      } else {
+-        spikes.position = selection.dataPosition
+-      }
+-      spikes.bounds = bounds
+-    }
++    out[0] = -a0*invDot;
++    out[1] = -a1*invDot;
++    out[2] = -a2*invDot;
++    out[3] = a3*invDot;
++    return out;
++};
+ 
+-    //If state changed, then redraw pick buffers
+-    if(pickDirty) {
+-      pickDirty = false
+-      renderPick()
+-    }
++/**
++ * Calculates the conjugate of a quat
++ * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quat to calculate conjugate of
++ * @returns {quat} out
++ */
++quat.conjugate = function (out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-    if(!dirty) {
+-      return
+-    }
++/**
++ * Calculates the length of a quat
++ *
++ * @param {quat} a vector to calculate length of
++ * @returns {Number} length of a
++ * @function
++ */
++quat.length = vec4.length;
+ 
+-    //Recalculate pixel data
+-    scene.axesPixels = axesRanges(scene.axes, cameraParams, width, height)
++/**
++ * Alias for {@link quat.length}
++ * @function
++ */
++quat.len = quat.length;
+ 
+-    //Call render callback
+-    if(scene.onrender) {
+-      scene.onrender()
+-    }
++/**
++ * Calculates the squared length of a quat
++ *
++ * @param {quat} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ * @function
++ */
++quat.squaredLength = vec4.squaredLength;
+ 
+-    //Read value
+-    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-    gl.viewport(0, 0, width, height)
++/**
++ * Alias for {@link quat.squaredLength}
++ * @function
++ */
++quat.sqrLen = quat.squaredLength;
+ 
+-    //General strategy: 3 steps
+-    //  1. render non-transparent objects
+-    //  2. accumulate transparent objects into separate fbo
+-    //  3. composite final scene
++/**
++ * Normalize a quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a quaternion to normalize
++ * @returns {quat} out
++ * @function
++ */
++quat.normalize = vec4.normalize;
+ 
+-    //Clear FBO
+-    var clearColor = scene.clearColor
+-    gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3])
+-    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+-    gl.depthMask(true)
+-    gl.colorMask(true, true, true, true)
+-    gl.enable(gl.DEPTH_TEST)
+-    gl.depthFunc(gl.LEQUAL)
+-    gl.disable(gl.BLEND)
+-    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
++/**
++ * Creates a quaternion from the given 3x3 rotation matrix.
++ *
++ * NOTE: The resultant quaternion is not normalized, so you should be sure
++ * to renormalize the quaternion yourself where necessary.
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {mat3} m rotation matrix
++ * @returns {quat} out
++ * @function
++ */
++quat.fromMat3 = function(out, m) {
++    // Algorithm in Ken Shoemake's article in 1987 SIGGRAPH course notes
++    // article "Quaternion Calculus and Fast Animation".
++    var fTrace = m[0] + m[4] + m[8];
++    var fRoot;
+ 
+-    //Render opaque pass
+-    var hasTransparent = false
+-    if(axes.enable) {
+-      hasTransparent = hasTransparent || axes.isTransparent()
+-      axes.draw(cameraParams)
+-    }
+-    spikes.axes = axes
+-    if(selection.object) {
+-      spikes.draw(cameraParams)
++    if ( fTrace > 0.0 ) {
++        // |w| > 1/2, may as well choose w > 1/2
++        fRoot = Math.sqrt(fTrace + 1.0);  // 2w
++        out[3] = 0.5 * fRoot;
++        fRoot = 0.5/fRoot;  // 1/(4w)
++        out[0] = (m[5]-m[7])*fRoot;
++        out[1] = (m[6]-m[2])*fRoot;
++        out[2] = (m[1]-m[3])*fRoot;
++    } else {
++        // |w| <= 1/2
++        var i = 0;
++        if ( m[4] > m[0] )
++          i = 1;
++        if ( m[8] > m[i*3+i] )
++          i = 2;
++        var j = (i+1)%3;
++        var k = (i+2)%3;
++        
++        fRoot = Math.sqrt(m[i*3+i]-m[j*3+j]-m[k*3+k] + 1.0);
++        out[i] = 0.5 * fRoot;
++        fRoot = 0.5 / fRoot;
++        out[3] = (m[j*3+k] - m[k*3+j]) * fRoot;
++        out[j] = (m[j*3+i] + m[i*3+j]) * fRoot;
++        out[k] = (m[k*3+i] + m[i*3+k]) * fRoot;
+     }
++    
++    return out;
++};
+ 
+-    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
++/**
++ * Returns a string representation of a quatenion
++ *
++ * @param {quat} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++quat.str = function (a) {
++    return 'quat(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
++};
+ 
+-    for(var i=0; i<numObjs; ++i) {
+-      var obj = objects[i]
+-      obj.axes = axes
+-      obj.pixelRatio = scene.pixelRatio
+-      if(obj.isOpaque && obj.isOpaque()) {
+-        obj.draw(cameraParams)
+-      }
+-      if(obj.isTransparent && obj.isTransparent()) {
+-        hasTransparent = true
+-      }
+-    }
++/**
++ * Returns whether or not the quaternions have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {quat} a The first quaternion.
++ * @param {quat} b The second quaternion.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++quat.exactEquals = vec4.exactEquals;
+ 
+-    if(hasTransparent) {
+-      //Render transparent pass
+-      accumBuffer.shape = viewShape
+-      accumBuffer.bind()
+-      gl.clear(gl.DEPTH_BUFFER_BIT)
+-      gl.colorMask(false, false, false, false)
+-      gl.depthMask(true)
+-      gl.depthFunc(gl.LESS)
++/**
++ * Returns whether or not the quaternions have approximately the same elements in the same position.
++ *
++ * @param {quat} a The first vector.
++ * @param {quat} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++quat.equals = vec4.equals;
+ 
+-      //Render forward facing objects
+-      if(axes.enable && axes.isTransparent()) {
+-        axes.drawTransparent(cameraParams)
+-      }
+-      for(var i=0; i<numObjs; ++i) {
+-        var obj = objects[i]
+-        if(obj.isOpaque && obj.isOpaque()) {
+-          obj.draw(cameraParams)
+-        }
+-      }
++module.exports = quat;
+ 
+-      //Render transparent pass
+-      gl.enable(gl.BLEND)
+-      gl.blendEquation(gl.FUNC_ADD)
+-      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
+-      gl.colorMask(true, true, true, true)
+-      gl.depthMask(false)
+-      gl.clearColor(0,0,0,0)
+-      gl.clear(gl.COLOR_BUFFER_BIT)
++},{"./common.js":155,"./mat3.js":158,"./vec3.js":162,"./vec4.js":163}],161:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-      if(axes.isTransparent()) {
+-        axes.drawTransparent(cameraParams)
+-      }
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-      for(var i=0; i<numObjs; ++i) {
+-        var obj = objects[i]
+-        if(obj.isTransparent && obj.isTransparent()) {
+-          obj.drawTransparent(cameraParams)
+-        }
+-      }
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-      //Unbind framebuffer
+-      gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-      //Draw composite pass
+-      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
+-      gl.disable(gl.DEPTH_TEST)
+-      accumShader.bind()
+-      accumBuffer.color[0].bind(0)
+-      accumShader.uniforms.accumBuffer = 0
+-      drawTriangle(gl)
++var glMatrix = require("./common.js");
+ 
+-      //Turn off blending
+-      gl.disable(gl.BLEND)
+-    }
++/**
++ * @class 2 Dimensional Vector
++ * @name vec2
++ */
++var vec2 = {};
+ 
+-    //Clear dirty flags
+-    dirty = false
+-    for(var i=0; i<numObjs; ++i) {
+-      objects[i].dirty = false
+-    }
+-  }
++/**
++ * Creates a new, empty vec2
++ *
++ * @returns {vec2} a new 2D vector
++ */
++vec2.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(2);
++    out[0] = 0;
++    out[1] = 0;
++    return out;
++};
+ 
++/**
++ * Creates a new vec2 initialized with values from an existing vector
++ *
++ * @param {vec2} a vector to clone
++ * @returns {vec2} a new 2D vector
++ */
++vec2.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(2);
++    out[0] = a[0];
++    out[1] = a[1];
++    return out;
++};
+ 
+-  //Draw the whole scene
+-  function render() {
+-    if(stopped || scene.contextLost) {
+-      return
+-    }
+-    requestAnimationFrame(render)
+-    redraw()
+-  }
+-  render()
++/**
++ * Creates a new vec2 initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @returns {vec2} a new 2D vector
++ */
++vec2.fromValues = function(x, y) {
++    var out = new glMatrix.ARRAY_TYPE(2);
++    out[0] = x;
++    out[1] = y;
++    return out;
++};
+ 
+-  //Force redraw of whole scene
+-  scene.redraw = function() {
+-    if(stopped) {
+-      return
+-    }
+-    dirty = true
+-    redraw()
+-  }
++/**
++ * Copy the values from one vec2 to another
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the source vector
++ * @returns {vec2} out
++ */
++vec2.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    return out;
++};
+ 
+-  return scene
+-}
++/**
++ * Set the components of a vec2 to the given values
++ *
++ * @param {vec2} out the receiving vector
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @returns {vec2} out
++ */
++vec2.set = function(out, x, y) {
++    out[0] = x;
++    out[1] = y;
++    return out;
++};
+ 
+-},{"./lib/shader":172,"3d-view-controls":173,"a-big-triangle":175,"gl-axes3d":176,"gl-axes3d/properties":186,"gl-fbo":129,"gl-mat4/perspective":146,"gl-select-static":202,"gl-spikes3d":188,"mouse-change":421}],190:[function(require,module,exports){
+-'use strict'
++/**
++ * Adds two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    return out;
++};
++
++/**
++ * Subtracts vector b from vector a
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    return out;
++};
+ 
++/**
++ * Alias for {@link vec2.subtract}
++ * @function
++ */
++vec2.sub = vec2.subtract;
+ 
++/**
++ * Multiplies two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.multiply = function(out, a, b) {
++    out[0] = a[0] * b[0];
++    out[1] = a[1] * b[1];
++    return out;
++};
+ 
+-module.exports = {
+-  vertex:       "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  fragColor = color;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
+-  fragment:     "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
+-  pickVertex:   "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 id;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\nuniform vec4 pickOffset;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
+-  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"
+-}
++/**
++ * Alias for {@link vec2.multiply}
++ * @function
++ */
++vec2.mul = vec2.multiply;
+ 
+-},{}],191:[function(require,module,exports){
+-'use strict'
++/**
++ * Divides two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.divide = function(out, a, b) {
++    out[0] = a[0] / b[0];
++    out[1] = a[1] / b[1];
++    return out;
++};
+ 
+-module.exports = createFancyScatter2D
++/**
++ * Alias for {@link vec2.divide}
++ * @function
++ */
++vec2.div = vec2.divide;
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var textCache = require('text-cache')
+-var pool = require('typedarray-pool')
+-var vectorizeText = require('vectorize-text')
+-var shaders = require('./lib/shaders')
++/**
++ * Math.ceil the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to ceil
++ * @returns {vec2} out
++ */
++vec2.ceil = function (out, a) {
++    out[0] = Math.ceil(a[0]);
++    out[1] = Math.ceil(a[1]);
++    return out;
++};
+ 
+-var BOUNDARIES = {}
++/**
++ * Math.floor the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to floor
++ * @returns {vec2} out
++ */
++vec2.floor = function (out, a) {
++    out[0] = Math.floor(a[0]);
++    out[1] = Math.floor(a[1]);
++    return out;
++};
+ 
+-function getBoundary(glyph) {
+-  if(glyph in BOUNDARIES) {
+-    return BOUNDARIES[glyph]
+-  }
++/**
++ * Returns the minimum of two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.min = function(out, a, b) {
++    out[0] = Math.min(a[0], b[0]);
++    out[1] = Math.min(a[1], b[1]);
++    return out;
++};
+ 
+-  var polys = vectorizeText(glyph, {
+-    polygons: true,
+-    font: 'sans-serif',
+-    textAlign: 'left',
+-    textBaseline: 'alphabetic'
+-  })
++/**
++ * Returns the maximum of two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec2} out
++ */
++vec2.max = function(out, a, b) {
++    out[0] = Math.max(a[0], b[0]);
++    out[1] = Math.max(a[1], b[1]);
++    return out;
++};
+ 
+-  var coords  = []
+-  var normals = []
++/**
++ * Math.round the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to round
++ * @returns {vec2} out
++ */
++vec2.round = function (out, a) {
++    out[0] = Math.round(a[0]);
++    out[1] = Math.round(a[1]);
++    return out;
++};
+ 
+-  polys.forEach(function(loops) {
+-    loops.forEach(function(loop) {
+-      for(var i=0; i<loop.length; ++i) {
+-        var a = loop[(i + loop.length - 1) % loop.length]
+-        var b = loop[i]
+-        var c = loop[(i + 1) % loop.length]
+-        var d = loop[(i + 2) % loop.length]
++/**
++ * Scales a vec2 by a scalar number
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {vec2} out
++ */
++vec2.scale = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    return out;
++};
+ 
+-        var dx = b[0] - a[0]
+-        var dy = b[1] - a[1]
+-        var dl = Math.sqrt(dx*dx + dy*dy)
+-        dx /= dl
+-        dy /= dl
++/**
++ * Adds two vec2's after scaling the second operand by a scalar value
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @param {Number} scale the amount to scale b by before adding
++ * @returns {vec2} out
++ */
++vec2.scaleAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    return out;
++};
+ 
+-        coords.push(a[0], a[1] + 1.4)
+-        normals.push(dy, -dx)
+-        coords.push(a[0], a[1] + 1.4)
+-        normals.push(-dy, dx)
+-        coords.push(b[0], b[1] + 1.4)
+-        normals.push(-dy, dx)
++/**
++ * Calculates the euclidian distance between two vec2's
++ *
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {Number} distance between a and b
++ */
++vec2.distance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1];
++    return Math.sqrt(x*x + y*y);
++};
+ 
+-        coords.push(b[0], b[1] + 1.4)
+-        normals.push(-dy, dx)
+-        coords.push(a[0], a[1] + 1.4)
+-        normals.push(dy, -dx)
+-        coords.push(b[0], b[1] + 1.4)
+-        normals.push(dy, -dx)
++/**
++ * Alias for {@link vec2.distance}
++ * @function
++ */
++vec2.dist = vec2.distance;
+ 
+-        var ex = d[0] - c[0]
+-        var ey = d[1] - c[1]
+-        var el = Math.sqrt(ex*ex + ey*ey)
+-        ex /= el
+-        ey /= el
++/**
++ * Calculates the squared euclidian distance between two vec2's
++ *
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {Number} squared distance between a and b
++ */
++vec2.squaredDistance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1];
++    return x*x + y*y;
++};
+ 
+-        coords.push(b[0], b[1]+1.4)
+-        normals.push(dy, -dx)
+-        coords.push(b[0], b[1]+1.4)
+-        normals.push(-dy, dx)
+-        coords.push(c[0], c[1]+1.4)
+-        normals.push(-ey, ex)
++/**
++ * Alias for {@link vec2.squaredDistance}
++ * @function
++ */
++vec2.sqrDist = vec2.squaredDistance;
+ 
+-        coords.push(c[0], c[1]+1.4)
+-        normals.push(-ey, ex)
+-        coords.push(b[0], b[1]+1.4)
+-        normals.push(ey, -ex)
+-        coords.push(c[0], c[1]+1.4)
+-        normals.push(ey, -ex)
+-      }
+-    })
+-  })
++/**
++ * Calculates the length of a vec2
++ *
++ * @param {vec2} a vector to calculate length of
++ * @returns {Number} length of a
++ */
++vec2.length = function (a) {
++    var x = a[0],
++        y = a[1];
++    return Math.sqrt(x*x + y*y);
++};
+ 
+-  var bounds = [Infinity, Infinity, -Infinity, -Infinity]
+-  for(var i=0; i<coords.length; i+=2) {
+-    for(var j=0; j<2; ++j) {
+-      bounds[j]   = Math.min(bounds[j],   coords[i+j])
+-      bounds[2+j] = Math.max(bounds[2+j], coords[i+j])
+-    }
+-  }
++/**
++ * Alias for {@link vec2.length}
++ * @function
++ */
++vec2.len = vec2.length;
+ 
+-  return BOUNDARIES[glyph] = {
+-    coords:  coords,
+-    normals: normals,
+-    bounds:  bounds
+-  }
+-}
++/**
++ * Calculates the squared length of a vec2
++ *
++ * @param {vec2} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ */
++vec2.squaredLength = function (a) {
++    var x = a[0],
++        y = a[1];
++    return x*x + y*y;
++};
+ 
++/**
++ * Alias for {@link vec2.squaredLength}
++ * @function
++ */
++vec2.sqrLen = vec2.squaredLength;
+ 
+-var VERTEX_SIZE       = 9
+-var VERTEX_SIZE_BYTES = VERTEX_SIZE * 4
++/**
++ * Negates the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to negate
++ * @returns {vec2} out
++ */
++vec2.negate = function(out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    return out;
++};
+ 
+-function GLScatterFancy(
+-    plot,
+-    shader,
+-    pickShader,
+-    positionBuffer,
+-    offsetBuffer,
+-    colorBuffer,
+-    idBuffer) {
+-  this.plot           = plot
+-  this.shader         = shader
+-  this.pickShader     = pickShader
+-  this.positionBuffer = positionBuffer
+-  this.offsetBuffer   = offsetBuffer
+-  this.colorBuffer    = colorBuffer
+-  this.idBuffer       = idBuffer
+-  this.bounds         = [Infinity, Infinity, -Infinity, -Infinity]
+-  this.numPoints      = 0
+-  this.numVertices    = 0
+-  this.pickOffset     = 0
+-  this.points         = null
+-}
++/**
++ * Returns the inverse of the components of a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to invert
++ * @returns {vec2} out
++ */
++vec2.inverse = function(out, a) {
++  out[0] = 1.0 / a[0];
++  out[1] = 1.0 / a[1];
++  return out;
++};
+ 
+-var proto = GLScatterFancy.prototype
++/**
++ * Normalize a vec2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a vector to normalize
++ * @returns {vec2} out
++ */
++vec2.normalize = function(out, a) {
++    var x = a[0],
++        y = a[1];
++    var len = x*x + y*y;
++    if (len > 0) {
++        //TODO: evaluate use of glm_invsqrt here?
++        len = 1 / Math.sqrt(len);
++        out[0] = a[0] * len;
++        out[1] = a[1] * len;
++    }
++    return out;
++};
+ 
+-;(function() {
+-  var MATRIX = [
+-    1, 0, 0,
+-    0, 1, 0,
+-    0, 0, 1
+-  ];
++/**
++ * Calculates the dot product of two vec2's
++ *
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {Number} dot product of a and b
++ */
++vec2.dot = function (a, b) {
++    return a[0] * b[0] + a[1] * b[1];
++};
+ 
+-  var PIXEL_SCALE = [1, 1]
++/**
++ * Computes the cross product of two vec2's
++ * Note that the cross product must by definition produce a 3D vector
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @returns {vec3} out
++ */
++vec2.cross = function(out, a, b) {
++    var z = a[0] * b[1] - a[1] * b[0];
++    out[0] = out[1] = 0;
++    out[2] = z;
++    return out;
++};
+ 
+-  function calcScales() {
+-    var plot          = this.plot
+-    var bounds        = this.bounds
++/**
++ * Performs a linear interpolation between two vec2's
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the first operand
++ * @param {vec2} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec2} out
++ */
++vec2.lerp = function (out, a, b, t) {
++    var ax = a[0],
++        ay = a[1];
++    out[0] = ax + t * (b[0] - ax);
++    out[1] = ay + t * (b[1] - ay);
++    return out;
++};
+ 
+-    var viewBox     = plot.viewBox
+-    var dataBox     = plot.dataBox
+-    var pixelRatio  = plot.pixelRatio
++/**
++ * Generates a random vector with the given scale
++ *
++ * @param {vec2} out the receiving vector
++ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
++ * @returns {vec2} out
++ */
++vec2.random = function (out, scale) {
++    scale = scale || 1.0;
++    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
++    out[0] = Math.cos(r) * scale;
++    out[1] = Math.sin(r) * scale;
++    return out;
++};
+ 
+-    var boundX  = bounds[2] - bounds[0]
+-    var boundY  = bounds[3] - bounds[1]
+-    var dataX   = dataBox[2] - dataBox[0]
+-    var dataY   = dataBox[3] - dataBox[1]
++/**
++ * Transforms the vec2 with a mat2
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat2} m matrix to transform with
++ * @returns {vec2} out
++ */
++vec2.transformMat2 = function(out, a, m) {
++    var x = a[0],
++        y = a[1];
++    out[0] = m[0] * x + m[2] * y;
++    out[1] = m[1] * x + m[3] * y;
++    return out;
++};
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++/**
++ * Transforms the vec2 with a mat2d
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat2d} m matrix to transform with
++ * @returns {vec2} out
++ */
++vec2.transformMat2d = function(out, a, m) {
++    var x = a[0],
++        y = a[1];
++    out[0] = m[0] * x + m[2] * y + m[4];
++    out[1] = m[1] * x + m[3] * y + m[5];
++    return out;
++};
+ 
+-    var screenX = (viewBox[2] - viewBox[0])
+-    var screenY = (viewBox[3] - viewBox[1])
++/**
++ * Transforms the vec2 with a mat3
++ * 3rd vector component is implicitly '1'
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat3} m matrix to transform with
++ * @returns {vec2} out
++ */
++vec2.transformMat3 = function(out, a, m) {
++    var x = a[0],
++        y = a[1];
++    out[0] = m[0] * x + m[3] * y + m[6];
++    out[1] = m[1] * x + m[4] * y + m[7];
++    return out;
++};
+ 
+-    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
+-    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
+-  }
++/**
++ * Transforms the vec2 with a mat4
++ * 3rd vector component is implicitly '0'
++ * 4th vector component is implicitly '1'
++ *
++ * @param {vec2} out the receiving vector
++ * @param {vec2} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec2} out
++ */
++vec2.transformMat4 = function(out, a, m) {
++    var x = a[0], 
++        y = a[1];
++    out[0] = m[0] * x + m[4] * y + m[12];
++    out[1] = m[1] * x + m[5] * y + m[13];
++    return out;
++};
+ 
+-  proto.draw = function() {
+-    var plot          = this.plot
+-    var shader        = this.shader
+-    var numVertices   = this.numVertices
++/**
++ * Perform some operation over an array of vec2s.
++ *
++ * @param {Array} a the array of vectors to iterate over
++ * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed
++ * @param {Number} offset Number of elements to skip at the beginning of the array
++ * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
++ * @param {Function} fn Function to call for each vector in the array
++ * @param {Object} [arg] additional argument to pass to fn
++ * @returns {Array} a
++ * @function
++ */
++vec2.forEach = (function() {
++    var vec = vec2.create();
+ 
+-    if(!numVertices) {
+-      return
+-    }
++    return function(a, stride, offset, count, fn, arg) {
++        var i, l;
++        if(!stride) {
++            stride = 2;
++        }
+ 
+-    var gl          = plot.gl
++        if(!offset) {
++            offset = 0;
++        }
++        
++        if(count) {
++            l = Math.min((count * stride) + offset, a.length);
++        } else {
++            l = a.length;
++        }
+ 
+-    calcScales.call(this)
++        for(i = offset; i < l; i += stride) {
++            vec[0] = a[i]; vec[1] = a[i+1];
++            fn(vec, vec, arg);
++            a[i] = vec[0]; a[i+1] = vec[1];
++        }
++        
++        return a;
++    };
++})();
+ 
+-    shader.bind()
++/**
++ * Returns a string representation of a vector
++ *
++ * @param {vec2} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++vec2.str = function (a) {
++    return 'vec2(' + a[0] + ', ' + a[1] + ')';
++};
+ 
+-    shader.uniforms.pixelScale = PIXEL_SCALE
+-    shader.uniforms.viewTransform = MATRIX
++/**
++ * Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)
++ *
++ * @param {vec2} a The first vector.
++ * @param {vec2} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec2.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1];
++};
+ 
+-    this.positionBuffer.bind()
+-    shader.attributes.position.pointer()
++/**
++ * Returns whether or not the vectors have approximately the same elements in the same position.
++ *
++ * @param {vec2} a The first vector.
++ * @param {vec2} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec2.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1];
++    var b0 = b[0], b1 = b[1];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)));
++};
+ 
+-    this.offsetBuffer.bind()
+-    shader.attributes.offset.pointer()
++module.exports = vec2;
+ 
+-    this.colorBuffer.bind()
+-    shader.attributes.color.pointer(gl.UNSIGNED_BYTE, true)
++},{"./common.js":155}],162:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
+-  }
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-  var PICK_OFFSET = [0,0,0,0]
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-  proto.drawPick = function(offset) {
+-    var plot          = this.plot
+-    var shader        = this.pickShader
+-    var numVertices   = this.numVertices
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-    var gl          = plot.gl
++var glMatrix = require("./common.js");
+ 
+-    this.pickOffset = offset
++/**
++ * @class 3 Dimensional Vector
++ * @name vec3
++ */
++var vec3 = {};
+ 
+-    if(!numVertices) {
+-      return offset
+-    }
++/**
++ * Creates a new, empty vec3
++ *
++ * @returns {vec3} a new 3D vector
++ */
++vec3.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(3);
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    return out;
++};
+ 
+-    for(var i=0; i<4; ++i) {
+-      PICK_OFFSET[i] = ((offset>>(i*8)) & 0xff)
+-    }
++/**
++ * Creates a new vec3 initialized with values from an existing vector
++ *
++ * @param {vec3} a vector to clone
++ * @returns {vec3} a new 3D vector
++ */
++vec3.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(3);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    return out;
++};
+ 
+-    calcScales.call(this)
++/**
++ * Creates a new vec3 initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @returns {vec3} a new 3D vector
++ */
++vec3.fromValues = function(x, y, z) {
++    var out = new glMatrix.ARRAY_TYPE(3);
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    return out;
++};
+ 
+-    shader.bind()
++/**
++ * Copy the values from one vec3 to another
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the source vector
++ * @returns {vec3} out
++ */
++vec3.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    return out;
++};
+ 
+-    shader.uniforms.pixelScale    = PIXEL_SCALE
+-    shader.uniforms.viewTransform = MATRIX
+-    shader.uniforms.pickOffset    = PICK_OFFSET
++/**
++ * Set the components of a vec3 to the given values
++ *
++ * @param {vec3} out the receiving vector
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @returns {vec3} out
++ */
++vec3.set = function(out, x, y, z) {
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    return out;
++};
+ 
+-    this.positionBuffer.bind()
+-    shader.attributes.position.pointer()
++/**
++ * Adds two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    return out;
++};
+ 
+-    this.offsetBuffer.bind()
+-    shader.attributes.offset.pointer()
++/**
++ * Subtracts vector b from vector a
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    return out;
++};
+ 
+-    this.idBuffer.bind()
+-    shader.attributes.id.pointer(gl.UNSIGNED_BYTE, false)
++/**
++ * Alias for {@link vec3.subtract}
++ * @function
++ */
++vec3.sub = vec3.subtract;
+ 
+-    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
++/**
++ * Multiplies two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.multiply = function(out, a, b) {
++    out[0] = a[0] * b[0];
++    out[1] = a[1] * b[1];
++    out[2] = a[2] * b[2];
++    return out;
++};
+ 
+-    return offset + this.numPoints
+-  }
+-})()
++/**
++ * Alias for {@link vec3.multiply}
++ * @function
++ */
++vec3.mul = vec3.multiply;
+ 
+-proto.pick = function(x, y, value) {
+-  var pickOffset = this.pickOffset
+-  var pointCount = this.numPoints
+-  if(value < pickOffset || value >= pickOffset + pointCount) {
+-    return null
+-  }
+-  var pointId = value - pickOffset
+-  var points   = this.points
+-  return {
+-    object:     this,
+-    pointId:    pointId,
+-    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+-  }
+-}
++/**
++ * Divides two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.divide = function(out, a, b) {
++    out[0] = a[0] / b[0];
++    out[1] = a[1] / b[1];
++    out[2] = a[2] / b[2];
++    return out;
++};
+ 
+-proto.update = function(options) {
+-  options = options || {}
++/**
++ * Alias for {@link vec3.divide}
++ * @function
++ */
++vec3.div = vec3.divide;
+ 
+-  var positions     = options.positions    || []
+-  var colors        = options.colors       || []
+-  var glyphs        = options.glyphs       || []
+-  var sizes         = options.sizes        || []
+-  var borderWidths  = options.borderWidths || []
+-  var borderColors  = options.borderColors || []
++/**
++ * Math.ceil the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to ceil
++ * @returns {vec3} out
++ */
++vec3.ceil = function (out, a) {
++    out[0] = Math.ceil(a[0]);
++    out[1] = Math.ceil(a[1]);
++    out[2] = Math.ceil(a[2]);
++    return out;
++};
+ 
+-  this.points = positions
++/**
++ * Math.floor the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to floor
++ * @returns {vec3} out
++ */
++vec3.floor = function (out, a) {
++    out[0] = Math.floor(a[0]);
++    out[1] = Math.floor(a[1]);
++    out[2] = Math.floor(a[2]);
++    return out;
++};
+ 
+-  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
+-  var numVertices = 0
+-  for(var i=0; i<glyphs.length; ++i) {
+-    numVertices += (
+-      textCache('sans-serif', glyphs[i]).data.length +
+-      getBoundary(glyphs[i]).coords.length
+-    )>> 1
+-    for(var j=0; j<2; ++j) {
+-      bounds[j]   = Math.min(bounds[j],   positions[2*i+j])
+-      bounds[2+j] = Math.max(bounds[2+j], positions[2*i+j])
+-    }
+-  }
++/**
++ * Returns the minimum of two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.min = function(out, a, b) {
++    out[0] = Math.min(a[0], b[0]);
++    out[1] = Math.min(a[1], b[1]);
++    out[2] = Math.min(a[2], b[2]);
++    return out;
++};
+ 
+-  if(bounds[0] === bounds[2]) {
+-    bounds[2] += 1
+-  }
+-  if(bounds[3] === bounds[1]) {
+-    bounds[3] += 1
+-  }
++/**
++ * Returns the maximum of two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.max = function(out, a, b) {
++    out[0] = Math.max(a[0], b[0]);
++    out[1] = Math.max(a[1], b[1]);
++    out[2] = Math.max(a[2], b[2]);
++    return out;
++};
+ 
+-  var sx = 1/(bounds[2] - bounds[0])
+-  var sy = 1/(bounds[3] - bounds[1])
+-  var tx = bounds[0]
+-  var ty = bounds[1]
++/**
++ * Math.round the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to round
++ * @returns {vec3} out
++ */
++vec3.round = function (out, a) {
++    out[0] = Math.round(a[0]);
++    out[1] = Math.round(a[1]);
++    out[2] = Math.round(a[2]);
++    return out;
++};
+ 
+-  var v_position = pool.mallocFloat32(2 * numVertices)
+-  var v_offset   = pool.mallocFloat32(2 * numVertices)
+-  var v_color    = pool.mallocUint8(4 * numVertices)
+-  var v_ids      = pool.mallocUint32(numVertices)
+-  var ptr = 0
++/**
++ * Scales a vec3 by a scalar number
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {vec3} out
++ */
++vec3.scale = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    return out;
++};
+ 
+-  for(var i=0; i<glyphs.length; ++i) {
+-    var glyph = textCache('sans-serif', glyphs[i])
+-    var border = getBoundary(glyphs[i])
+-    var x = sx * (positions[2*i]   - tx)
+-    var y = sy * (positions[2*i+1] - ty)
+-    var s = sizes[i]
+-    var r = colors[4*i]   * 255.0
+-    var g = colors[4*i+1] * 255.0
+-    var b = colors[4*i+2] * 255.0
+-    var a = colors[4*i+3] * 255.0
++/**
++ * Adds two vec3's after scaling the second operand by a scalar value
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {Number} scale the amount to scale b by before adding
++ * @returns {vec3} out
++ */
++vec3.scaleAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    return out;
++};
+ 
+-    var gx = 0.5*(border.bounds[0] + border.bounds[2])
+-    var gy = 0.5*(border.bounds[1] + border.bounds[3])
++/**
++ * Calculates the euclidian distance between two vec3's
++ *
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} distance between a and b
++ */
++vec3.distance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2];
++    return Math.sqrt(x*x + y*y + z*z);
++};
+ 
+-    for(var j=0; j<glyph.data.length; j+=2) {
+-      v_position[2*ptr]   = x
+-      v_position[2*ptr+1] = y
+-      v_offset[2*ptr]     = -s * (glyph.data[j]   - gx)
+-      v_offset[2*ptr+1]   = -s * (glyph.data[j+1] - gy)
+-      v_color[4*ptr]      = r
+-      v_color[4*ptr+1]    = g
+-      v_color[4*ptr+2]    = b
+-      v_color[4*ptr+3]    = a
+-      v_ids[ptr]          = i
++/**
++ * Alias for {@link vec3.distance}
++ * @function
++ */
++vec3.dist = vec3.distance;
+ 
+-      ptr += 1
+-    }
++/**
++ * Calculates the squared euclidian distance between two vec3's
++ *
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} squared distance between a and b
++ */
++vec3.squaredDistance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2];
++    return x*x + y*y + z*z;
++};
+ 
+-    var w = borderWidths[i]
+-    r = borderColors[4*i]   * 255.0
+-    g = borderColors[4*i+1] * 255.0
+-    b = borderColors[4*i+2] * 255.0
+-    a = borderColors[4*i+3] * 255.0
++/**
++ * Alias for {@link vec3.squaredDistance}
++ * @function
++ */
++vec3.sqrDist = vec3.squaredDistance;
+ 
+-    for(var j=0; j<border.coords.length; j+=2) {
+-      v_position[2*ptr]   = x
+-      v_position[2*ptr+1] = y
+-      v_offset[2*ptr]     = -(s*(border.coords[j]  -gx)+w*border.normals[j])
+-      v_offset[2*ptr+1]   = -(s*(border.coords[j+1]-gy)+w*border.normals[j+1])
+-      v_color[4*ptr]      = r
+-      v_color[4*ptr+1]    = g
+-      v_color[4*ptr+2]    = b
+-      v_color[4*ptr+3]    = a
+-      v_ids[ptr]          = i
++/**
++ * Calculates the length of a vec3
++ *
++ * @param {vec3} a vector to calculate length of
++ * @returns {Number} length of a
++ */
++vec3.length = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2];
++    return Math.sqrt(x*x + y*y + z*z);
++};
+ 
+-      ptr += 1
+-    }
+-  }
++/**
++ * Alias for {@link vec3.length}
++ * @function
++ */
++vec3.len = vec3.length;
+ 
+-  this.numPoints = glyphs.length
+-  this.numVertices = numVertices
++/**
++ * Calculates the squared length of a vec3
++ *
++ * @param {vec3} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ */
++vec3.squaredLength = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2];
++    return x*x + y*y + z*z;
++};
+ 
+-  this.positionBuffer.update(v_position)
+-  this.offsetBuffer.update(v_offset)
+-  this.colorBuffer.update(v_color)
+-  this.idBuffer.update(v_ids)
++/**
++ * Alias for {@link vec3.squaredLength}
++ * @function
++ */
++vec3.sqrLen = vec3.squaredLength;
+ 
+-  pool.free(v_position)
+-  pool.free(v_offset)
+-  pool.free(v_color)
+-  pool.free(v_ids)
+-}
++/**
++ * Negates the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to negate
++ * @returns {vec3} out
++ */
++vec3.negate = function(out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    return out;
++};
+ 
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.pickShader.dispose()
+-  this.positionBuffer.dispose()
+-  this.offsetBuffer.dispose()
+-  this.colorBuffer.dispose()
+-  this.idBuffer.dispose()
+-  this.plot.removeObject(this)
+-}
++/**
++ * Returns the inverse of the components of a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to invert
++ * @returns {vec3} out
++ */
++vec3.inverse = function(out, a) {
++  out[0] = 1.0 / a[0];
++  out[1] = 1.0 / a[1];
++  out[2] = 1.0 / a[2];
++  return out;
++};
+ 
+-function createFancyScatter2D(plot, options) {
+-  var gl = plot.gl
++/**
++ * Normalize a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to normalize
++ * @returns {vec3} out
++ */
++vec3.normalize = function(out, a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2];
++    var len = x*x + y*y + z*z;
++    if (len > 0) {
++        //TODO: evaluate use of glm_invsqrt here?
++        len = 1 / Math.sqrt(len);
++        out[0] = a[0] * len;
++        out[1] = a[1] * len;
++        out[2] = a[2] * len;
++    }
++    return out;
++};
+ 
+-  var shader      = createShader(gl, shaders.vertex,     shaders.fragment)
+-  var pickShader  = createShader(gl, shaders.pickVertex, shaders.pickFragment)
++/**
++ * Calculates the dot product of two vec3's
++ *
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} dot product of a and b
++ */
++vec3.dot = function (a, b) {
++    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
++};
+ 
+-  var positionBuffer  = createBuffer(gl)
+-  var offsetBuffer    = createBuffer(gl)
+-  var colorBuffer     = createBuffer(gl)
+-  var idBuffer        = createBuffer(gl)
++/**
++ * Computes the cross product of two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
++ */
++vec3.cross = function(out, a, b) {
++    var ax = a[0], ay = a[1], az = a[2],
++        bx = b[0], by = b[1], bz = b[2];
+ 
+-  var scatter = new GLScatterFancy(
+-    plot,
+-    shader,
+-    pickShader,
+-    positionBuffer,
+-    offsetBuffer,
+-    colorBuffer,
+-    idBuffer)
++    out[0] = ay * bz - az * by;
++    out[1] = az * bx - ax * bz;
++    out[2] = ax * by - ay * bx;
++    return out;
++};
+ 
+-  scatter.update(options)
++/**
++ * Performs a linear interpolation between two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
++ */
++vec3.lerp = function (out, a, b, t) {
++    var ax = a[0],
++        ay = a[1],
++        az = a[2];
++    out[0] = ax + t * (b[0] - ax);
++    out[1] = ay + t * (b[1] - ay);
++    out[2] = az + t * (b[2] - az);
++    return out;
++};
+ 
+-  plot.addObject(scatter)
++/**
++ * Performs a hermite interpolation with two control points
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {vec3} c the third operand
++ * @param {vec3} d the fourth operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
++ */
++vec3.hermite = function (out, a, b, c, d, t) {
++  var factorTimes2 = t * t,
++      factor1 = factorTimes2 * (2 * t - 3) + 1,
++      factor2 = factorTimes2 * (t - 2) + t,
++      factor3 = factorTimes2 * (t - 1),
++      factor4 = factorTimes2 * (3 - 2 * t);
++  
++  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
++  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
++  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
++  
++  return out;
++};
+ 
+-  return scatter
+-}
++/**
++ * Performs a bezier interpolation with two control points
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {vec3} c the third operand
++ * @param {vec3} d the fourth operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
++ */
++vec3.bezier = function (out, a, b, c, d, t) {
++  var inverseFactor = 1 - t,
++      inverseFactorTimesTwo = inverseFactor * inverseFactor,
++      factorTimes2 = t * t,
++      factor1 = inverseFactorTimesTwo * inverseFactor,
++      factor2 = 3 * t * inverseFactorTimesTwo,
++      factor3 = 3 * factorTimes2 * inverseFactor,
++      factor4 = factorTimes2 * t;
++  
++  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
++  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
++  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
++  
++  return out;
++};
+ 
+-},{"./lib/shaders":190,"gl-buffer":124,"gl-shader":203,"text-cache":453,"typedarray-pool":458,"vectorize-text":460}],192:[function(require,module,exports){
++/**
++ * Generates a random vector with the given scale
++ *
++ * @param {vec3} out the receiving vector
++ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
++ * @returns {vec3} out
++ */
++vec3.random = function (out, scale) {
++    scale = scale || 1.0;
+ 
++    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
++    var z = (glMatrix.RANDOM() * 2.0) - 1.0;
++    var zScale = Math.sqrt(1.0-z*z) * scale;
+ 
+-exports.pointVertex       = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute float weight;\n\nuniform mat3 matrix;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}\n"
+-exports.pointFragment     = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}\n"
+-exports.pickVertex        = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n"
+-exports.pickFragment      = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"
++    out[0] = Math.cos(r) * zScale;
++    out[1] = Math.sin(r) * zScale;
++    out[2] = z * scale;
++    return out;
++};
+ 
+-},{}],193:[function(require,module,exports){
+-arguments[4][68][0].apply(exports,arguments)
+-},{"dup":68}],194:[function(require,module,exports){
+-'use strict'
++/**
++ * Transforms the vec3 with a mat4.
++ * 4th vector component is implicitly '1'
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec3} out
++ */
++vec3.transformMat4 = function(out, a, m) {
++    var x = a[0], y = a[1], z = a[2],
++        w = m[3] * x + m[7] * y + m[11] * z + m[15];
++    w = w || 1.0;
++    out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w;
++    out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w;
++    out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w;
++    return out;
++};
+ 
+-module.exports = sortLevels
++/**
++ * Transforms the vec3 with a mat3.
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to transform
++ * @param {mat4} m the 3x3 matrix to transform with
++ * @returns {vec3} out
++ */
++vec3.transformMat3 = function(out, a, m) {
++    var x = a[0], y = a[1], z = a[2];
++    out[0] = x * m[0] + y * m[3] + z * m[6];
++    out[1] = x * m[1] + y * m[4] + z * m[7];
++    out[2] = x * m[2] + y * m[5] + z * m[8];
++    return out;
++};
+ 
+-var INSERT_SORT_CUTOFF = 32
++/**
++ * Transforms the vec3 with a quat
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the vector to transform
++ * @param {quat} q quaternion to transform with
++ * @returns {vec3} out
++ */
++vec3.transformQuat = function(out, a, q) {
++    // benchmarks: http://jsperf.com/quaternion-transform-vec3-implementations
+ 
+-function sortLevels(data_levels, data_points, data_ids, data_weights, n0) {
+-  if (n0 <= 4*INSERT_SORT_CUTOFF) {
+-    insertionSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
+-  }
+-}
++    var x = a[0], y = a[1], z = a[2],
++        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+ 
+-function insertionSort(left, right, data_levels, data_points, data_ids, data_weights) {
+-  for(var i=left+1; i<=right; ++i) {
+-    var a_level  = data_levels[i]
+-    var a_x      = data_points[2*i]
+-    var a_y      = data_points[2*i+1]
+-    var a_id     = data_ids[i]
+-    var a_weight = data_weights[i]
++        // calculate quat * vec
++        ix = qw * x + qy * z - qz * y,
++        iy = qw * y + qz * x - qx * z,
++        iz = qw * z + qx * y - qy * x,
++        iw = -qx * x - qy * y - qz * z;
+ 
+-    var j = i
+-    while(j > left) {
+-      var b_level = data_levels[j-1]
+-      var b_x     = data_points[2*(j-1)]
+-      if(((b_level - a_level) || (a_x - b_x)) >= 0) {
+-        break
+-      }
+-      data_levels[j]      = b_level
+-      data_points[2*j]    = b_x
+-      data_points[2*j+1]  = data_points[2*j-1]
+-      data_ids[j]         = data_ids[j-1]
+-      data_weights[j]     = data_weights[j-1]
+-      j -= 1
+-    }
++    // calculate result * inverse quat
++    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
++    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
++    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
++    return out;
++};
+ 
+-    data_levels[j]     = a_level
+-    data_points[2*j]   = a_x
+-    data_points[2*j+1] = a_y
+-    data_ids[j]        = a_id
+-    data_weights[j]    = a_weight
+-  }
+-}
++/**
++ * Rotate a 3D vector around the x-axis
++ * @param {vec3} out The receiving vec3
++ * @param {vec3} a The vec3 point to rotate
++ * @param {vec3} b The origin of the rotation
++ * @param {Number} c The angle of rotation
++ * @returns {vec3} out
++ */
++vec3.rotateX = function(out, a, b, c){
++   var p = [], r=[];
++	  //Translate point to the origin
++	  p[0] = a[0] - b[0];
++	  p[1] = a[1] - b[1];
++  	p[2] = a[2] - b[2];
+ 
+-function swap(i, j, data_levels, data_points, data_ids, data_weights) {
+-  var a_level = data_levels[i]
+-  var a_x     = data_points[2*i]
+-  var a_y     = data_points[2*i+1]
+-  var a_id    = data_ids[i]
+-  var a_weight = data_weights[i]
++	  //perform rotation
++	  r[0] = p[0];
++	  r[1] = p[1]*Math.cos(c) - p[2]*Math.sin(c);
++	  r[2] = p[1]*Math.sin(c) + p[2]*Math.cos(c);
+ 
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
++	  //translate to correct position
++	  out[0] = r[0] + b[0];
++	  out[1] = r[1] + b[1];
++	  out[2] = r[2] + b[2];
+ 
+-  data_levels[j]     = a_level
+-  data_points[2*j]   = a_x
+-  data_points[2*j+1] = a_y
+-  data_ids[j]        = a_id
+-  data_weights[j]    = a_weight
+-}
++  	return out;
++};
+ 
+-function move(i, j, data_levels, data_points, data_ids, data_weights) {
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
+-}
++/**
++ * Rotate a 3D vector around the y-axis
++ * @param {vec3} out The receiving vec3
++ * @param {vec3} a The vec3 point to rotate
++ * @param {vec3} b The origin of the rotation
++ * @param {Number} c The angle of rotation
++ * @returns {vec3} out
++ */
++vec3.rotateY = function(out, a, b, c){
++  	var p = [], r=[];
++  	//Translate point to the origin
++  	p[0] = a[0] - b[0];
++  	p[1] = a[1] - b[1];
++  	p[2] = a[2] - b[2];
++  
++  	//perform rotation
++  	r[0] = p[2]*Math.sin(c) + p[0]*Math.cos(c);
++  	r[1] = p[1];
++  	r[2] = p[2]*Math.cos(c) - p[0]*Math.sin(c);
++  
++  	//translate to correct position
++  	out[0] = r[0] + b[0];
++  	out[1] = r[1] + b[1];
++  	out[2] = r[2] + b[2];
++  
++  	return out;
++};
+ 
+-function rotate(i, j, k, data_levels, data_points, data_ids, data_weights) {
+-  var a_level = data_levels[i]
+-  var a_x     = data_points[2*i]
+-  var a_y     = data_points[2*i+1]
+-  var a_id    = data_ids[i]
+-  var a_weight = data_weights[i]
++/**
++ * Rotate a 3D vector around the z-axis
++ * @param {vec3} out The receiving vec3
++ * @param {vec3} a The vec3 point to rotate
++ * @param {vec3} b The origin of the rotation
++ * @param {Number} c The angle of rotation
++ * @returns {vec3} out
++ */
++vec3.rotateZ = function(out, a, b, c){
++  	var p = [], r=[];
++  	//Translate point to the origin
++  	p[0] = a[0] - b[0];
++  	p[1] = a[1] - b[1];
++  	p[2] = a[2] - b[2];
++  
++  	//perform rotation
++  	r[0] = p[0]*Math.cos(c) - p[1]*Math.sin(c);
++  	r[1] = p[0]*Math.sin(c) + p[1]*Math.cos(c);
++  	r[2] = p[2];
++  
++  	//translate to correct position
++  	out[0] = r[0] + b[0];
++  	out[1] = r[1] + b[1];
++  	out[2] = r[2] + b[2];
++  
++  	return out;
++};
+ 
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
++/**
++ * Perform some operation over an array of vec3s.
++ *
++ * @param {Array} a the array of vectors to iterate over
++ * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed
++ * @param {Number} offset Number of elements to skip at the beginning of the array
++ * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array
++ * @param {Function} fn Function to call for each vector in the array
++ * @param {Object} [arg] additional argument to pass to fn
++ * @returns {Array} a
++ * @function
++ */
++vec3.forEach = (function() {
++    var vec = vec3.create();
+ 
+-  data_levels[j]     = data_levels[k]
+-  data_points[2*j]   = data_points[2*k]
+-  data_points[2*j+1] = data_points[2*k+1]
+-  data_ids[j]        = data_ids[k]
+-  data_weights[j]    = data_weights[k]
++    return function(a, stride, offset, count, fn, arg) {
++        var i, l;
++        if(!stride) {
++            stride = 3;
++        }
+ 
+-  data_levels[k]     = a_level
+-  data_points[2*k]   = a_x
+-  data_points[2*k+1] = a_y
+-  data_ids[k]        = a_id
+-  data_weights[k]    = a_weight
+-}
++        if(!offset) {
++            offset = 0;
++        }
++        
++        if(count) {
++            l = Math.min((count * stride) + offset, a.length);
++        } else {
++            l = a.length;
++        }
+ 
+-function shufflePivot(
+-  i, j,
+-  a_level, a_x, a_y, a_id, a_weight,
+-  data_levels, data_points, data_ids, data_weights) {
++        for(i = offset; i < l; i += stride) {
++            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2];
++            fn(vec, vec, arg);
++            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2];
++        }
++        
++        return a;
++    };
++})();
+ 
+-  data_levels[i]     = data_levels[j]
+-  data_points[2*i]   = data_points[2*j]
+-  data_points[2*i+1] = data_points[2*j+1]
+-  data_ids[i]        = data_ids[j]
+-  data_weights[i]    = data_weights[j]
++/**
++ * Get the angle between two 3D vectors
++ * @param {vec3} a The first operand
++ * @param {vec3} b The second operand
++ * @returns {Number} The angle in radians
++ */
++vec3.angle = function(a, b) {
++   
++    var tempA = vec3.fromValues(a[0], a[1], a[2]);
++    var tempB = vec3.fromValues(b[0], b[1], b[2]);
++ 
++    vec3.normalize(tempA, tempA);
++    vec3.normalize(tempB, tempB);
++ 
++    var cosine = vec3.dot(tempA, tempB);
+ 
+-  data_levels[j]     = a_level
+-  data_points[2*j]   = a_x
+-  data_points[2*j+1] = a_y
+-  data_ids[j]        = a_id
+-  data_weights[j]    = a_weight
+-}
++    if(cosine > 1.0){
++        return 0;
++    } else {
++        return Math.acos(cosine);
++    }     
++};
+ 
+-function compare(i, j, data_levels, data_points, data_ids) {
+-  return ((data_levels[i] - data_levels[j]) ||
+-          (data_points[2*j] - data_points[2*i]) ||
+-          (data_ids[i] - data_ids[j])) < 0
+-}
++/**
++ * Returns a string representation of a vector
++ *
++ * @param {vec3} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++vec3.str = function (a) {
++    return 'vec3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ')';
++};
+ 
+-function comparePivot(i, level, x, y, id, data_levels, data_points, data_ids) {
+-  return ((level - data_levels[i]) ||
+-          (data_points[2*i] - x) ||
+-          (id - data_ids[i])) < 0
+-}
++/**
++ * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {vec3} a The first vector.
++ * @param {vec3} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec3.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2];
++};
++
++/**
++ * Returns whether or not the vectors have approximately the same elements in the same position.
++ *
++ * @param {vec3} a The first vector.
++ * @param {vec3} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec3.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2];
++    var b0 = b[0], b1 = b[1], b2 = b[2];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)));
++};
+ 
+-function quickSort(left, right, data_levels, data_points, data_ids, data_weights) {
+-  var sixth = (right - left + 1) / 6 | 0,
+-      index1 = left + sixth,
+-      index5 = right - sixth,
+-      index3 = left + right >> 1,
+-      index2 = index3 - sixth,
+-      index4 = index3 + sixth,
+-      el1 = index1,
+-      el2 = index2,
+-      el3 = index3,
+-      el4 = index4,
+-      el5 = index5,
+-      less = left + 1,
+-      great = right - 1,
+-      tmp = 0
+-  if(compare(el1, el2, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el1
+-    el1 = el2
+-    el2 = tmp
+-  }
+-  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el1, el3, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el1
+-    el1 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el1, el4, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el1
+-    el1 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el3, el4, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el3
+-    el3 = el4
+-    el4 = tmp
+-  }
+-  if(compare(el2, el5, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el2
+-    el2 = el5
+-    el5 = tmp
+-  }
+-  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el2
+-    el2 = el3
+-    el3 = tmp
+-  }
+-  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
+-    tmp = el4
+-    el4 = el5
+-    el5 = tmp
+-  }
++module.exports = vec3;
+ 
+-  var pivot1_level  = data_levels[el2]
+-  var pivot1_x      = data_points[2*el2]
+-  var pivot1_y      = data_points[2*el2+1]
+-  var pivot1_id     = data_ids[el2]
+-  var pivot1_weight = data_weights[el2]
++},{"./common.js":155}],163:[function(require,module,exports){
++/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-  var pivot2_level  = data_levels[el4]
+-  var pivot2_x      = data_points[2*el4]
+-  var pivot2_y      = data_points[2*el4+1]
+-  var pivot2_id     = data_ids[el4]
+-  var pivot2_weight = data_weights[el4]
++Permission is hereby granted, free of charge, to any person obtaining a copy
++of this software and associated documentation files (the "Software"), to deal
++in the Software without restriction, including without limitation the rights
++to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
++copies of the Software, and to permit persons to whom the Software is
++furnished to do so, subject to the following conditions:
+ 
+-  var ptr0 = el1
+-  var ptr2 = el3
+-  var ptr4 = el5
+-  var ptr5 = index1
+-  var ptr6 = index3
+-  var ptr7 = index5
++The above copyright notice and this permission notice shall be included in
++all copies or substantial portions of the Software.
+ 
+-  var level_x = data_levels[ptr0]
+-  var level_y = data_levels[ptr2]
+-  var level_z = data_levels[ptr4]
+-  data_levels[ptr5] = level_x
+-  data_levels[ptr6] = level_y
+-  data_levels[ptr7] = level_z
++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
++IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
++FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
++AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
++LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
++OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
++THE SOFTWARE. */
+ 
+-  for (var i1 = 0; i1 < 2; ++i1) {
+-    var x = data_points[2*ptr0+i1]
+-    var y = data_points[2*ptr2+i1]
+-    var z = data_points[2*ptr4+i1]
+-    data_points[2*ptr5+i1] = x
+-    data_points[2*ptr6+i1] = y
+-    data_points[2*ptr7+i1] = z
+-  }
++var glMatrix = require("./common.js");
+ 
+-  var id_x = data_ids[ptr0]
+-  var id_y = data_ids[ptr2]
+-  var id_z = data_ids[ptr4]
+-  data_ids[ptr5] = id_x
+-  data_ids[ptr6] = id_y
+-  data_ids[ptr7] = id_z
++/**
++ * @class 4 Dimensional Vector
++ * @name vec4
++ */
++var vec4 = {};
+ 
+-  var weight_x = data_weights[ptr0]
+-  var weight_y = data_weights[ptr2]
+-  var weight_z = data_weights[ptr4]
+-  data_weights[ptr5] = weight_x
+-  data_weights[ptr6] = weight_y
+-  data_weights[ptr7] = weight_z
++/**
++ * Creates a new, empty vec4
++ *
++ * @returns {vec4} a new 4D vector
++ */
++vec4.create = function() {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = 0;
++    out[1] = 0;
++    out[2] = 0;
++    out[3] = 0;
++    return out;
++};
+ 
+-  move(index2, left,  data_levels, data_points, data_ids, data_weights)
+-  move(index4, right, data_levels, data_points, data_ids, data_weights)
+-  for (var k = less; k <= great; ++k) {
+-    if (comparePivot(k,
+-        pivot1_level, pivot1_x, pivot1_y, pivot1_id,
+-        data_levels, data_points, data_ids)) {
+-      if (k !== less) {
+-        swap(k, less, data_levels, data_points, data_ids, data_weights)
+-      }
+-      ++less;
+-    } else {
+-      if (!comparePivot(k,
+-          pivot2_level, pivot2_x, pivot2_y, pivot2_id,
+-          data_levels, data_points, data_ids)) {
+-        while (true) {
+-          if (!comparePivot(great,
+-              pivot2_level, pivot2_x, pivot2_y, pivot2_id,
+-              data_levels, data_points, data_ids)) {
+-            if (--great < k) {
+-              break;
+-            }
+-            continue;
+-          } else {
+-            if (comparePivot(great,
+-                pivot1_level, pivot1_x, pivot1_y, pivot1_id,
+-                data_levels, data_points, data_ids)) {
+-              rotate(k, less, great, data_levels, data_points, data_ids, data_weights)
+-              ++less;
+-              --great;
+-            } else {
+-              swap(k, great, data_levels, data_points, data_ids, data_weights)
+-              --great;
+-            }
+-            break;
+-          }
+-        }
+-      }
+-    }
+-  }
+-  shufflePivot(left, less-1, pivot1_level, pivot1_x, pivot1_y, pivot1_id, pivot1_weight, data_levels, data_points, data_ids, data_weights)
+-  shufflePivot(right, great+1, pivot2_level, pivot2_x, pivot2_y, pivot2_id, pivot2_weight, data_levels, data_points, data_ids, data_weights)
+-  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
+-    insertionSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
+-  }
+-  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
+-    insertionSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
+-  }
+-  if (great - less <= INSERT_SORT_CUTOFF) {
+-    insertionSort(less, great, data_levels, data_points, data_ids, data_weights)
+-  } else {
+-    quickSort(less, great, data_levels, data_points, data_ids, data_weights)
+-  }
+-}
++/**
++ * Creates a new vec4 initialized with values from an existing vector
++ *
++ * @param {vec4} a vector to clone
++ * @returns {vec4} a new 4D vector
++ */
++vec4.clone = function(a) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-},{}],195:[function(require,module,exports){
+-'use strict'
++/**
++ * Creates a new vec4 initialized with the given values
++ *
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {vec4} a new 4D vector
++ */
++vec4.fromValues = function(x, y, z, w) {
++    var out = new glMatrix.ARRAY_TYPE(4);
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    out[3] = w;
++    return out;
++};
+ 
+-var pool = require('typedarray-pool')
++/**
++ * Copy the values from one vec4 to another
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the source vector
++ * @returns {vec4} out
++ */
++vec4.copy = function(out, a) {
++    out[0] = a[0];
++    out[1] = a[1];
++    out[2] = a[2];
++    out[3] = a[3];
++    return out;
++};
+ 
+-var sortLevels = require('./lib/sort')
++/**
++ * Set the components of a vec4 to the given values
++ *
++ * @param {vec4} out the receiving vector
++ * @param {Number} x X component
++ * @param {Number} y Y component
++ * @param {Number} z Z component
++ * @param {Number} w W component
++ * @returns {vec4} out
++ */
++vec4.set = function(out, x, y, z, w) {
++    out[0] = x;
++    out[1] = y;
++    out[2] = z;
++    out[3] = w;
++    return out;
++};
+ 
+-module.exports = snapPoints
++/**
++ * Adds two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.add = function(out, a, b) {
++    out[0] = a[0] + b[0];
++    out[1] = a[1] + b[1];
++    out[2] = a[2] + b[2];
++    out[3] = a[3] + b[3];
++    return out;
++};
+ 
+-function partition(points, ids, start, end, lox, loy, hix, hiy) {
+-  var mid = start
+-  for(var i=start; i<end; ++i) {
+-    var x  = points[2*i]
+-    var y  = points[2*i+1]
+-    var s  = ids[i]
+-    if(lox <= x && x <= hix &&
+-       loy <= y && y <= hiy) {
+-      if(i === mid) {
+-        mid += 1
+-      } else {
+-        points[2*i]     = points[2*mid]
+-        points[2*i+1]   = points[2*mid+1]
+-        ids[i]          = ids[mid]
+-        points[2*mid]   = x
+-        points[2*mid+1] = y
+-        ids[mid]        = s
+-        mid += 1
+-      }
+-    }
+-  }
+-  return mid
+-}
++/**
++ * Subtracts vector b from vector a
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.subtract = function(out, a, b) {
++    out[0] = a[0] - b[0];
++    out[1] = a[1] - b[1];
++    out[2] = a[2] - b[2];
++    out[3] = a[3] - b[3];
++    return out;
++};
+ 
+-function SnapInterval(pixelSize, offset, count) {
+-  this.pixelSize  = pixelSize
+-  this.offset     = offset
+-  this.count      = count
+-}
++/**
++ * Alias for {@link vec4.subtract}
++ * @function
++ */
++vec4.sub = vec4.subtract;
+ 
+-function snapPoints(points, ids, weights, bounds) {
+-  var n    = points.length >>> 1
+-  if(n < 1) {
+-    return []
+-  }
++/**
++ * Multiplies two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.multiply = function(out, a, b) {
++    out[0] = a[0] * b[0];
++    out[1] = a[1] * b[1];
++    out[2] = a[2] * b[2];
++    out[3] = a[3] * b[3];
++    return out;
++};
+ 
+-  var lox =  Infinity, loy =  Infinity
+-  var hix = -Infinity, hiy = -Infinity
+-  for(var i=0; i<n; ++i) {
+-    var x = points[2*i]
+-    var y = points[2*i+1]
+-    lox = Math.min(lox, x)
+-    hix = Math.max(hix, x)
+-    loy = Math.min(loy, y)
+-    hiy = Math.max(hiy, y)
+-    ids[i] = i
+-  }
++/**
++ * Alias for {@link vec4.multiply}
++ * @function
++ */
++vec4.mul = vec4.multiply;
+ 
+-  if(lox === hix) {
+-    hix += 1 + Math.abs(hix)
+-  }
+-  if(loy === hiy) {
+-    hiy += 1 + Math.abs(hix)
+-  }
++/**
++ * Divides two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.divide = function(out, a, b) {
++    out[0] = a[0] / b[0];
++    out[1] = a[1] / b[1];
++    out[2] = a[2] / b[2];
++    out[3] = a[3] / b[3];
++    return out;
++};
+ 
+-  //Calculate diameter
+-  var scaleX = 1.0 / (hix - lox)
+-  var scaleY = 1.0 / (hiy - loy)
+-  var diam = Math.max(hix - lox, hiy - loy)
++/**
++ * Alias for {@link vec4.divide}
++ * @function
++ */
++vec4.div = vec4.divide;
+ 
+-  bounds = bounds || [0,0,0,0]
++/**
++ * Math.ceil the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to ceil
++ * @returns {vec4} out
++ */
++vec4.ceil = function (out, a) {
++    out[0] = Math.ceil(a[0]);
++    out[1] = Math.ceil(a[1]);
++    out[2] = Math.ceil(a[2]);
++    out[3] = Math.ceil(a[3]);
++    return out;
++};
+ 
+-  bounds[0] = lox
+-  bounds[1] = loy
+-  bounds[2] = hix
+-  bounds[3] = hiy
++/**
++ * Math.floor the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to floor
++ * @returns {vec4} out
++ */
++vec4.floor = function (out, a) {
++    out[0] = Math.floor(a[0]);
++    out[1] = Math.floor(a[1]);
++    out[2] = Math.floor(a[2]);
++    out[3] = Math.floor(a[3]);
++    return out;
++};
+ 
+-  var levels = pool.mallocInt32(n)
+-  var ptr = 0
++/**
++ * Returns the minimum of two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.min = function(out, a, b) {
++    out[0] = Math.min(a[0], b[0]);
++    out[1] = Math.min(a[1], b[1]);
++    out[2] = Math.min(a[2], b[2]);
++    out[3] = Math.min(a[3], b[3]);
++    return out;
++};
+ 
+-  function snapRec(x, y, diam, start, end, level) {
+-    var diam_2 = diam * 0.5
+-    var offset = start + 1
+-    var count = end - start
+-    weights[ptr] = count
+-    levels[ptr++] = level
+-    for(var i=0; i<2; ++i) {
+-      for(var j=0; j<2; ++j) {
+-        var nx = x+i*diam_2
+-        var ny = y+j*diam_2
+-        var nextOffset = partition(
+-            points
+-          , ids
+-          , offset
+-          , end
+-          , nx, ny
+-          , nx+diam_2, ny+diam_2)
+-        if(nextOffset === offset) {
+-          continue
+-        }
+-        if(nextOffset - offset >= Math.max(0.9 * count, 32)) {
+-          var mid = (end + start)>>>1
+-          snapRec(nx, ny, diam_2, offset, mid, level+1)
+-          offset = mid
+-        }
+-        snapRec(nx, ny, diam_2, offset, nextOffset, level+1)
+-        offset = nextOffset
+-      }
+-    }
+-  }
+-  snapRec(lox, loy, diam, 0, n, 0)
+-  sortLevels(levels, points, ids, weights, n)
++/**
++ * Returns the maximum of two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {vec4} out
++ */
++vec4.max = function(out, a, b) {
++    out[0] = Math.max(a[0], b[0]);
++    out[1] = Math.max(a[1], b[1]);
++    out[2] = Math.max(a[2], b[2]);
++    out[3] = Math.max(a[3], b[3]);
++    return out;
++};
++
++/**
++ * Math.round the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to round
++ * @returns {vec4} out
++ */
++vec4.round = function (out, a) {
++    out[0] = Math.round(a[0]);
++    out[1] = Math.round(a[1]);
++    out[2] = Math.round(a[2]);
++    out[3] = Math.round(a[3]);
++    return out;
++};
++
++/**
++ * Scales a vec4 by a scalar number
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to scale
++ * @param {Number} b amount to scale the vector by
++ * @returns {vec4} out
++ */
++vec4.scale = function(out, a, b) {
++    out[0] = a[0] * b;
++    out[1] = a[1] * b;
++    out[2] = a[2] * b;
++    out[3] = a[3] * b;
++    return out;
++};
+ 
+-  var lod         = []
+-  var lastLevel   = 0
+-  var prevOffset  = n
+-  for(var ptr=n-1; ptr>=0; --ptr) {
+-    points[2*ptr]   = (points[2*ptr]   - lox) * scaleX
+-    points[2*ptr+1] = (points[2*ptr+1] - loy) * scaleY
++/**
++ * Adds two vec4's after scaling the second operand by a scalar value
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @param {Number} scale the amount to scale b by before adding
++ * @returns {vec4} out
++ */
++vec4.scaleAndAdd = function(out, a, b, scale) {
++    out[0] = a[0] + (b[0] * scale);
++    out[1] = a[1] + (b[1] * scale);
++    out[2] = a[2] + (b[2] * scale);
++    out[3] = a[3] + (b[3] * scale);
++    return out;
++};
+ 
+-    var level = levels[ptr]
+-    if(level === lastLevel) {
+-      continue
+-    }
++/**
++ * Calculates the euclidian distance between two vec4's
++ *
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {Number} distance between a and b
++ */
++vec4.distance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2],
++        w = b[3] - a[3];
++    return Math.sqrt(x*x + y*y + z*z + w*w);
++};
+ 
+-    lod.push(new SnapInterval(
+-      diam * Math.pow(0.5, level),
+-      ptr+1,
+-      prevOffset - (ptr+1)
+-    ))
+-    prevOffset = ptr+1
++/**
++ * Alias for {@link vec4.distance}
++ * @function
++ */
++vec4.dist = vec4.distance;
+ 
+-    lastLevel = level
+-  }
++/**
++ * Calculates the squared euclidian distance between two vec4's
++ *
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {Number} squared distance between a and b
++ */
++vec4.squaredDistance = function(a, b) {
++    var x = b[0] - a[0],
++        y = b[1] - a[1],
++        z = b[2] - a[2],
++        w = b[3] - a[3];
++    return x*x + y*y + z*z + w*w;
++};
+ 
+-  lod.push(new SnapInterval(diam * Math.pow(0.5, level+1), 0, prevOffset))
+-  pool.free(levels)
++/**
++ * Alias for {@link vec4.squaredDistance}
++ * @function
++ */
++vec4.sqrDist = vec4.squaredDistance;
+ 
+-  return lod
+-}
++/**
++ * Calculates the length of a vec4
++ *
++ * @param {vec4} a vector to calculate length of
++ * @returns {Number} length of a
++ */
++vec4.length = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2],
++        w = a[3];
++    return Math.sqrt(x*x + y*y + z*z + w*w);
++};
+ 
+-},{"./lib/sort":194,"typedarray-pool":458}],196:[function(require,module,exports){
+-'use strict'
++/**
++ * Alias for {@link vec4.length}
++ * @function
++ */
++vec4.len = vec4.length;
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-var bsearch = require('binary-search-bounds')
+-var snapPoints = require('snap-points-2d')
++/**
++ * Calculates the squared length of a vec4
++ *
++ * @param {vec4} a vector to calculate squared length of
++ * @returns {Number} squared length of a
++ */
++vec4.squaredLength = function (a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2],
++        w = a[3];
++    return x*x + y*y + z*z + w*w;
++};
+ 
+-var pool = require('typedarray-pool')
++/**
++ * Alias for {@link vec4.squaredLength}
++ * @function
++ */
++vec4.sqrLen = vec4.squaredLength;
+ 
+-var SHADERS = require('./lib/shader')
++/**
++ * Negates the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to negate
++ * @returns {vec4} out
++ */
++vec4.negate = function(out, a) {
++    out[0] = -a[0];
++    out[1] = -a[1];
++    out[2] = -a[2];
++    out[3] = -a[3];
++    return out;
++};
+ 
+-module.exports = createScatter2D
++/**
++ * Returns the inverse of the components of a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to invert
++ * @returns {vec4} out
++ */
++vec4.inverse = function(out, a) {
++  out[0] = 1.0 / a[0];
++  out[1] = 1.0 / a[1];
++  out[2] = 1.0 / a[2];
++  out[3] = 1.0 / a[3];
++  return out;
++};
+ 
+-function Scatter2D(plot, offsetBuffer, pickBuffer, weightBuffer, shader, pickShader) {
+-  this.plot           = plot
+-  this.offsetBuffer   = offsetBuffer
+-  this.pickBuffer     = pickBuffer
+-  this.weightBuffer   = weightBuffer
+-  this.shader         = shader
+-  this.pickShader     = pickShader
+-  this.scales         = []
+-  this.size           = 12.0
+-  this.borderSize     = 1.0
+-  this.pointCount     = 0
+-  this.color          = [1,0,0,1]
+-  this.borderColor    = [0,0,0,1]
+-  this.bounds         = [Infinity,Infinity,-Infinity,-Infinity]
+-  this.pickOffset     = 0
+-  this.points         = null
+-  this.xCoords        = null
+-}
++/**
++ * Normalize a vec4
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a vector to normalize
++ * @returns {vec4} out
++ */
++vec4.normalize = function(out, a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2],
++        w = a[3];
++    var len = x*x + y*y + z*z + w*w;
++    if (len > 0) {
++        len = 1 / Math.sqrt(len);
++        out[0] = x * len;
++        out[1] = y * len;
++        out[2] = z * len;
++        out[3] = w * len;
++    }
++    return out;
++};
+ 
+-var proto = Scatter2D.prototype
++/**
++ * Calculates the dot product of two vec4's
++ *
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @returns {Number} dot product of a and b
++ */
++vec4.dot = function (a, b) {
++    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
++};
+ 
+-proto.dispose = function() {
+-  this.shader.dispose()
+-  this.pickShader.dispose()
+-  this.offsetBuffer.dispose()
+-  this.pickBuffer.dispose()
+-  if(this.xCoords) {
+-    pool.free(this.xCoords)
+-  }
+-  this.plot.removeObject(this)
+-}
++/**
++ * Performs a linear interpolation between two vec4's
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the first operand
++ * @param {vec4} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec4} out
++ */
++vec4.lerp = function (out, a, b, t) {
++    var ax = a[0],
++        ay = a[1],
++        az = a[2],
++        aw = a[3];
++    out[0] = ax + t * (b[0] - ax);
++    out[1] = ay + t * (b[1] - ay);
++    out[2] = az + t * (b[2] - az);
++    out[3] = aw + t * (b[3] - aw);
++    return out;
++};
+ 
+-proto.update = function(options) {
+-  options = options || {}
++/**
++ * Generates a random vector with the given scale
++ *
++ * @param {vec4} out the receiving vector
++ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
++ * @returns {vec4} out
++ */
++vec4.random = function (out, scale) {
++    scale = scale || 1.0;
+ 
+-  function dflt(opt, value) {
+-    if(opt in options) {
+-      return options[opt]
+-    }
+-    return value
+-  }
++    //TODO: This is a pretty awful way of doing this. Find something better.
++    out[0] = glMatrix.RANDOM();
++    out[1] = glMatrix.RANDOM();
++    out[2] = glMatrix.RANDOM();
++    out[3] = glMatrix.RANDOM();
++    vec4.normalize(out, out);
++    vec4.scale(out, out, scale);
++    return out;
++};
+ 
+-  this.size         = dflt('size', 12.0)
+-  this.color        = dflt('color', [1,0,0,1]).slice()
+-  this.borderSize   = dflt('borderSize', 1)
+-  this.borderColor  = dflt('borderColor', [0,0,0,1]).slice()
++/**
++ * Transforms the vec4 with a mat4.
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec4} out
++ */
++vec4.transformMat4 = function(out, a, m) {
++    var x = a[0], y = a[1], z = a[2], w = a[3];
++    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
++    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
++    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
++    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
++    return out;
++};
+ 
+-  //Update point data
+-  if(this.xCoords) {
+-    pool.free(this.xCoords)
+-  }
+-  var data          = options.positions
+-  var packed        = pool.mallocFloat32(data.length)
+-  var packedId      = pool.mallocInt32(data.length>>>1)
+-  packed.set(data)
+-  var packedW       = pool.mallocFloat32(data.length)
+-  this.points       = data
+-  this.scales       = snapPoints(packed, packedId, packedW, this.bounds)
+-  this.offsetBuffer.update(packed)
+-  this.pickBuffer.update(packedId)
+-  this.weightBuffer.update(packedW)
+-  var xCoords      = pool.mallocFloat32(data.length>>>1)
+-  for(var i=0,j=0; i<data.length; i+=2,++j) {
+-    xCoords[j] = packed[i]
+-  }
+-  pool.free(packedId)
+-  pool.free(packed)
+-  pool.free(packedW)
++/**
++ * Transforms the vec4 with a quat
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to transform
++ * @param {quat} q quaternion to transform with
++ * @returns {vec4} out
++ */
++vec4.transformQuat = function(out, a, q) {
++    var x = a[0], y = a[1], z = a[2],
++        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+ 
+-  this.xCoords = xCoords
++        // calculate quat * vec
++        ix = qw * x + qy * z - qz * y,
++        iy = qw * y + qz * x - qx * z,
++        iz = qw * z + qx * y - qy * x,
++        iw = -qx * x - qy * y - qz * z;
+ 
+-  this.pointCount = data.length >>> 1
+-  this.pickOffset = 0
+-}
++    // calculate result * inverse quat
++    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
++    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
++    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
++    out[3] = a[3];
++    return out;
++};
+ 
+-proto.drawPick = (function() {
+-  var MATRIX = [1,0,0,
+-                0,1,0,
+-                0,0,1]
+-  var PICK_VEC4 = [0,0,0,0]
+-return function(pickOffset) {
+-  var plot          = this.plot
+-  var shader        = this.pickShader
+-  var scales        = this.scales
+-  var offsetBuffer  = this.offsetBuffer
+-  var pickBuffer    = this.pickBuffer
+-  var bounds        = this.bounds
+-  var size          = this.size
+-  var borderSize    = this.borderSize
+-  var gl            = plot.gl
+-  var pixelRatio    = plot.pickPixelRatio
+-  var viewBox       = plot.viewBox
+-  var dataBox       = plot.dataBox
++/**
++ * Perform some operation over an array of vec4s.
++ *
++ * @param {Array} a the array of vectors to iterate over
++ * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed
++ * @param {Number} offset Number of elements to skip at the beginning of the array
++ * @param {Number} count Number of vec4s to iterate over. If 0 iterates over entire array
++ * @param {Function} fn Function to call for each vector in the array
++ * @param {Object} [arg] additional argument to pass to fn
++ * @returns {Array} a
++ * @function
++ */
++vec4.forEach = (function() {
++    var vec = vec4.create();
+ 
+-  if(this.pointCount === 0) {
+-    return pickOffset
+-  }
++    return function(a, stride, offset, count, fn, arg) {
++        var i, l;
++        if(!stride) {
++            stride = 4;
++        }
+ 
+-  var boundX  = bounds[2] - bounds[0]
+-  var boundY  = bounds[3] - bounds[1]
+-  var dataX   = dataBox[2] - dataBox[0]
+-  var dataY   = dataBox[3] - dataBox[1]
+-  var screenX = (viewBox[2] - viewBox[0]) * pixelRatio / plot.pixelRatio
+-  var screenY = (viewBox[3] - viewBox[1]) * pixelRatio / plot.pixelRatio
++        if(!offset) {
++            offset = 0;
++        }
++        
++        if(count) {
++            l = Math.min((count * stride) + offset, a.length);
++        } else {
++            l = a.length;
++        }
+ 
+-  var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
+-  var targetScale = pixelSize
++        for(i = offset; i < l; i += stride) {
++            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2]; vec[3] = a[i+3];
++            fn(vec, vec, arg);
++            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2]; a[i+3] = vec[3];
++        }
++        
++        return a;
++    };
++})();
+ 
++/**
++ * Returns a string representation of a vector
++ *
++ * @param {vec4} vec vector to represent as a string
++ * @returns {String} string representation of the vector
++ */
++vec4.str = function (a) {
++    return 'vec4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
++};
+ 
+-  MATRIX[0] = 2.0 * boundX / dataX
+-  MATRIX[4] = 2.0 * boundY / dataY
+-  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++/**
++ * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
++ *
++ * @param {vec4} a The first vector.
++ * @param {vec4} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec4.exactEquals = function (a, b) {
++    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
++};
+ 
+-  this.pickOffset = pickOffset
+-  PICK_VEC4[0] = ( pickOffset      & 0xff)
+-  PICK_VEC4[1] = ((pickOffset>>8)  & 0xff)
+-  PICK_VEC4[2] = ((pickOffset>>16) & 0xff)
+-  PICK_VEC4[3] = ((pickOffset>>24) & 0xff)
++/**
++ * Returns whether or not the vectors have approximately the same elements in the same position.
++ *
++ * @param {vec4} a The first vector.
++ * @param {vec4} b The second vector.
++ * @returns {Boolean} True if the vectors are equal, false otherwise.
++ */
++vec4.equals = function (a, b) {
++    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
++    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
++    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
++            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
++            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
++            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
++};
+ 
+-  shader.bind()
+-  shader.uniforms.matrix      = MATRIX
+-  shader.uniforms.color       = this.color
+-  shader.uniforms.borderColor = this.borderColor
+-  shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
+-  shader.uniforms.pickOffset  = PICK_VEC4
++module.exports = vec4;
+ 
+-  if(this.borderSize === 0) {
+-    shader.uniforms.centerFraction = 2.0;
+-  } else {
+-    shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
+-  }
++},{"./common.js":155}],164:[function(require,module,exports){
++'use strict'
+ 
+-  offsetBuffer.bind()
+-  shader.attributes.position.pointer()
+-  pickBuffer.bind()
+-  shader.attributes.pickId.pointer(gl.UNSIGNED_BYTE)
++var barycentric            = require('barycentric')
++var closestPointToTriangle = require('polytope-closest-point/lib/closest_point_2d.js')
+ 
+-  var xCoords = this.xCoords
+-  var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
+-  var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
++module.exports = closestPointToPickLocation
+ 
+-  for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
+-    var lod     = scales[scaleNum]
+-    if(lod.pixelSize < pixelSize && scaleNum > 1) {
+-      continue
++function xformMatrix(m, v) {
++  var out = [0,0,0,0]
++  for(var i=0; i<4; ++i) {
++    for(var j=0; j<4; ++j) {
++      out[j] += m[4*i + j] * v[i]
+     }
++  }
++  return out
++}
+ 
+-    var intervalStart = lod.offset
+-    var intervalEnd   = lod.count + intervalStart
++function projectVertex(v, model, view, projection, resolution) {
++  var p = xformMatrix(projection,
++            xformMatrix(view,
++              xformMatrix(model, [v[0], v[1], v[2], 1])))
++  for(var i=0; i<3; ++i) {
++    p[i] /= p[3]
++  }
++  return [ 0.5 * resolution[0] * (1.0+p[0]), 0.5 * resolution[1] * (1.0-p[1]) ]
++}
+ 
+-    var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
+-    var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
++function barycentricCoord(simplex, point) {
++  if(simplex.length === 2) {
++    var d0 = 0.0
++    var d1 = 0.0
++    for(var i=0; i<2; ++i) {
++      d0 += Math.pow(point[i] - simplex[0][i], 2)
++      d1 += Math.pow(point[i] - simplex[1][i], 2)
++    }
++    d0 = Math.sqrt(d0)
++    d1 = Math.sqrt(d1)
++    if(d0+d1 < 1e-6) {
++      return [1,0]
++    }
++    return [d1/(d0+d1),d0/(d1+d0)]
++  } else if(simplex.length === 3) {
++    var closestPoint = [0,0]
++    closestPointToTriangle(simplex[0], simplex[1], simplex[2], point, closestPoint)
++    return barycentric(simplex, closestPoint)
++  }
++  return []
++}
+ 
+-    if(endOffset > startOffset) {
+-      gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
++function interpolate(simplex, weights) {
++  var result = [0,0,0]
++  for(var i=0; i<simplex.length; ++i) {
++    var p = simplex[i]
++    var w = weights[i]
++    for(var j=0; j<3; ++j) {
++      result[j] += w * p[j]
+     }
+   }
+-
+-  return pickOffset + this.pointCount
++  return result
+ }
+-})()
+ 
+-proto.draw = (function() {
+-  var MATRIX = [1, 0, 0,
+-                0, 1, 0,
+-                0, 0, 1]
++function closestPointToPickLocation(simplex, pixelCoord, model, view, projection, resolution) {
++  if(simplex.length === 1) {
++    return [0, simplex[0].slice()]
++  }
++  var simplex2D = new Array(simplex.length)
++  for(var i=0; i<simplex.length; ++i) {
++    simplex2D[i] = projectVertex(simplex[i], model, view, projection, resolution);
++  }
+ 
+-  return function() {
+-    var plot          = this.plot
+-    var shader        = this.shader
+-    var scales        = this.scales
+-    var offsetBuffer  = this.offsetBuffer
+-    var bounds        = this.bounds
+-    var size          = this.size
+-    var borderSize    = this.borderSize
+-    var gl            = plot.gl
+-    var pixelRatio    = plot.pixelRatio
+-    var viewBox       = plot.viewBox
+-    var dataBox       = plot.dataBox
++  var closestIndex = 0
++  var closestDist  = Infinity
++  for(var i=0; i<simplex2D.length; ++i) {
++    var d2 = 0.0
++    for(var j=0; j<2; ++j) {
++      d2 += Math.pow(simplex2D[i][j] - pixelCoord[j], 2)
++    }
++    if(d2 < closestDist) {
++      closestDist  = d2
++      closestIndex = i
++    }
++  }
+ 
+-    if(this.pointCount === 0) {
+-      return
++  var weights = barycentricCoord(simplex2D, pixelCoord)
++  var s = 0.0
++  for(var i=0; i<3; ++i) {
++    if(weights[i] < -0.001 ||
++       weights[i] > 1.0001) {
++      return null
+     }
++    s += weights[i]
++  }
++  if(Math.abs(s - 1.0) > 0.001) {
++    return null
++  }
++  return [closestIndex, interpolate(simplex, weights), weights]
++}
++},{"barycentric":31,"polytope-closest-point/lib/closest_point_2d.js":402}],165:[function(require,module,exports){
+ 
+-    var boundX  = bounds[2] - bounds[0]
+-    var boundY  = bounds[3] - bounds[1]
+-    var dataX   = dataBox[2] - dataBox[0]
+-    var dataY   = dataBox[3] - dataBox[1]
+-    var screenX = viewBox[2] - viewBox[0]
+-    var screenY = viewBox[3] - viewBox[1]
+ 
+-    var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
+-    var targetScale = pixelSize
++var triVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, normal;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model\n           , view\n           , projection;\nuniform vec3 eyePosition\n           , lightPosition;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec4 m_position  = model * vec4(position, 1.0);\n  vec4 t_position  = view * m_position;\n  gl_Position      = projection * t_position;\n  f_color          = color;\n  f_normal         = normal;\n  f_data           = position;\n  f_eyeDirection   = eyePosition   - position;\n  f_lightDirection = lightPosition - position;\n  f_uv             = uv;\n}"
++var triFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat cookTorranceSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness,\n  float fresnel) {\n\n  float VdotN = max(dot(viewDirection, surfaceNormal), 0.0);\n  float LdotN = max(dot(lightDirection, surfaceNormal), 0.0);\n\n  //Half angle vector\n  vec3 H = normalize(lightDirection + viewDirection);\n\n  //Geometric term\n  float NdotH = max(dot(surfaceNormal, H), 0.0);\n  float VdotH = max(dot(viewDirection, H), 0.000001);\n  float LdotH = max(dot(lightDirection, H), 0.000001);\n  float G1 = (2.0 * NdotH * VdotN) / VdotH;\n  float G2 = (2.0 * NdotH * LdotN) / LdotH;\n  float G = min(1.0, min(G1, G2));\n  \n  //Distribution term\n  float D = beckmannDistribution_2_0(NdotH, roughness);\n\n  //Fresnel term\n  float F = pow(1.0 - VdotN, fresnel);\n\n  //Multiply terms and done\n  return  G * F * D / max(3.14159265 * VdotN, 0.000001);\n}\n\n\n\nuniform vec3 clipBounds[2];\nuniform float roughness\n            , fresnel\n            , kambient\n            , kdiffuse\n            , kspecular\n            , opacity;\nuniform sampler2D texture;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(f_normal);\n  vec3 L = normalize(f_lightDirection);\n  vec3 V = normalize(f_eyeDirection);\n  \n  if(!gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = cookTorranceSpecular_1_1(L, V, N, roughness, fresnel);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = f_color * texture2D(texture, f_uv);\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = litColor * opacity;\n}"
++var edgeVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model, view, projection;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_color = color;\n  f_data  = position;\n  f_uv    = uv;\n}"
++var edgeFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 clipBounds[2];\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
++var pointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\nattribute float pointSize;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position = projection * view * model * vec4(position, 1.0);\n  }\n  gl_PointSize = pointSize;\n  f_color = color;\n  f_uv = uv;\n}"
++var pointFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec2 pointR = gl_PointCoord.xy - vec2(0.5,0.5);\n  if(dot(pointR, pointR) > 0.25) {\n    discard;\n  }\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
++var pickVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_id        = id;\n  f_position  = position;\n}"
++var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3  clipBounds[2];\nuniform float pickId;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(f_position, clipBounds[0])) || \n     any(greaterThan(f_position, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId, f_id.xyz);\n}"
++var pickPointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3  position;\nattribute float pointSize;\nattribute vec4  id;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position  = projection * view * model * vec4(position, 1.0);\n    gl_PointSize = pointSize;\n  }\n  f_id         = id;\n  f_position   = position;\n}"
++var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n}"
++var contourFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 contourColor;\n\nvoid main() {\n  gl_FragColor = vec4(contourColor,1);\n}\n"
+ 
+-    MATRIX[0] = 2.0 * boundX / dataX
+-    MATRIX[4] = 2.0 * boundY / dataY
+-    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
+-    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
++exports.meshShader = {
++  vertex:   triVertSrc,
++  fragment: triFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'normal', type: 'vec3'},
++    {name: 'color', type: 'vec4'},
++    {name: 'uv', type: 'vec2'}
++  ]
++}
++exports.wireShader = {
++  vertex:   edgeVertSrc,
++  fragment: edgeFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'color', type: 'vec4'},
++    {name: 'uv', type: 'vec2'}
++  ]
++}
++exports.pointShader = {
++  vertex:   pointVertSrc,
++  fragment: pointFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'color', type: 'vec4'},
++    {name: 'uv', type: 'vec2'},
++    {name: 'pointSize', type: 'float'}
++  ]
++}
++exports.pickShader = {
++  vertex:   pickVertSrc,
++  fragment: pickFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'id', type: 'vec4'}
++  ]
++}
++exports.pointPickShader = {
++  vertex:   pickPointVertSrc,
++  fragment: pickFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'},
++    {name: 'pointSize', type: 'float'},
++    {name: 'id', type: 'vec4'}
++  ]
++}
++exports.contourShader = {
++  vertex:   contourVertSrc,
++  fragment: contourFragSrc,
++  attributes: [
++    {name: 'position', type: 'vec3'}
++  ]
++}
+ 
+-    shader.bind()
+-    shader.uniforms.matrix      = MATRIX
+-    shader.uniforms.color       = this.color
+-    shader.uniforms.borderColor = this.borderColor
+-    shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
+-    shader.uniforms.useWeight   = 1
++},{}],166:[function(require,module,exports){
++'use strict'
+ 
+-    if(this.borderSize === 0) {
+-      shader.uniforms.centerFraction = 2.0;
+-    } else {
+-      shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
+-    }
++var DEFAULT_VERTEX_NORMALS_EPSILON = 1e-6; // may be too large if triangles are very small
++var DEFAULT_FACE_NORMALS_EPSILON = 1e-6;
+ 
+-    offsetBuffer.bind()
+-    shader.attributes.position.pointer()
++var createShader  = require('gl-shader')
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var createTexture = require('gl-texture2d')
++var normals       = require('normals')
++var multiply      = require('gl-mat4/multiply')
++var invert        = require('gl-mat4/invert')
++var ndarray       = require('ndarray')
++var colormap      = require('colormap')
++var getContour    = require('simplicial-complex-contour')
++var pool          = require('typedarray-pool')
++var shaders       = require('./lib/shaders')
++var closestPoint  = require('./lib/closest-point')
+ 
+-    this.weightBuffer.bind()
+-    shader.attributes.weight.pointer()
++var meshShader    = shaders.meshShader
++var wireShader    = shaders.wireShader
++var pointShader   = shaders.pointShader
++var pickShader    = shaders.pickShader
++var pointPickShader = shaders.pointPickShader
++var contourShader = shaders.contourShader
+ 
+-    var xCoords = this.xCoords
+-    var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
+-    var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
++var identityMatrix = [
++  1,0,0,0,
++  0,1,0,0,
++  0,0,1,0,
++  0,0,0,1]
+ 
+-    var firstLevel = true
++function SimplicialMesh(gl
++  , texture
++  , triShader
++  , lineShader
++  , pointShader
++  , pickShader
++  , pointPickShader
++  , contourShader
++  , trianglePositions
++  , triangleIds
++  , triangleColors
++  , triangleUVs
++  , triangleNormals
++  , triangleVAO
++  , edgePositions
++  , edgeIds
++  , edgeColors
++  , edgeUVs
++  , edgeVAO
++  , pointPositions
++  , pointIds
++  , pointColors
++  , pointUVs
++  , pointSizes
++  , pointVAO
++  , contourPositions
++  , contourVAO) {
+ 
+-    for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
+-      var lod     = scales[scaleNum]
+-      if(lod.pixelSize < pixelSize && scaleNum > 1) {
+-        continue
+-      }
++  this.gl                = gl
++  this.cells             = []
++  this.positions         = []
++  this.intensity         = []
++  this.texture           = texture
++  this.dirty             = true
+ 
+-      var intervalStart = lod.offset
+-      var intervalEnd   = lod.count + intervalStart
++  this.triShader         = triShader
++  this.lineShader        = lineShader
++  this.pointShader       = pointShader
++  this.pickShader        = pickShader
++  this.pointPickShader   = pointPickShader
++  this.contourShader     = contourShader
+ 
+-      var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
+-      var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
++  this.trianglePositions = trianglePositions
++  this.triangleColors    = triangleColors
++  this.triangleNormals   = triangleNormals
++  this.triangleUVs       = triangleUVs
++  this.triangleIds       = triangleIds
++  this.triangleVAO       = triangleVAO
++  this.triangleCount     = 0
+ 
+-      if(endOffset > startOffset) {
+-        gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
+-      }
++  this.lineWidth         = 1
++  this.edgePositions     = edgePositions
++  this.edgeColors        = edgeColors
++  this.edgeUVs           = edgeUVs
++  this.edgeIds           = edgeIds
++  this.edgeVAO           = edgeVAO
++  this.edgeCount         = 0
+ 
+-      if(firstLevel) {
+-        firstLevel = false
+-        shader.uniforms.useWeight = 0
+-      }
+-    }
+-  }
+-})()
++  this.pointPositions    = pointPositions
++  this.pointColors       = pointColors
++  this.pointUVs          = pointUVs
++  this.pointSizes        = pointSizes
++  this.pointIds          = pointIds
++  this.pointVAO          = pointVAO
++  this.pointCount        = 0
+ 
+-proto.pick = function(x, y, value) {
+-  var pickOffset = this.pickOffset
+-  var pointCount = this.pointCount
+-  if(value < pickOffset || value >= pickOffset + pointCount) {
+-    return null
+-  }
+-  var pointId = value - pickOffset
+-  var points = this.points
+-  return {
+-    object:  this,
+-    pointId: pointId,
+-    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+-  }
+-}
++  this.contourLineWidth  = 1
++  this.contourPositions  = contourPositions
++  this.contourVAO        = contourVAO
++  this.contourCount      = 0
++  this.contourColor      = [0,0,0]
++  this.contourEnable     = true
+ 
+-function createScatter2D(plot, options) {
+-  var gl     = plot.gl
+-  var buffer = createBuffer(gl)
+-  var pickBuffer = createBuffer(gl)
+-  var weightBuffer = createBuffer(gl)
+-  var shader = createShader(gl, SHADERS.pointVertex, SHADERS.pointFragment)
+-  var pickShader = createShader(gl, SHADERS.pickVertex, SHADERS.pickFragment)
++  this.pickId            = 1
++  this.bounds            = [
++    [ Infinity, Infinity, Infinity],
++    [-Infinity,-Infinity,-Infinity] ]
++  this.clipBounds        = [
++    [-Infinity,-Infinity,-Infinity],
++    [ Infinity, Infinity, Infinity] ]
+ 
+-  var result = new Scatter2D(
+-    plot, buffer, pickBuffer, weightBuffer, shader, pickShader)
+-  result.update(options)
++  this.lightPosition = [1e5, 1e5, 0]
++  this.ambientLight  = 0.8
++  this.diffuseLight  = 0.8
++  this.specularLight = 2.0
++  this.roughness     = 0.5
++  this.fresnel       = 1.5
+ 
+-  //Register with plot
+-  plot.addObject(result)
++  this.opacity       = 1.0
+ 
+-  return result
++  this._model       = identityMatrix
++  this._view        = identityMatrix
++  this._projection  = identityMatrix
++  this._resolution  = [1,1]
+ }
+ 
+-},{"./lib/shader":192,"binary-search-bounds":193,"gl-buffer":124,"gl-shader":203,"snap-points-2d":195,"typedarray-pool":458}],197:[function(require,module,exports){
+-"use strict"
++var proto = SimplicialMesh.prototype
+ 
+-var vectorizeText = require("vectorize-text")
++proto.isOpaque = function() {
++  return this.opacity >= 1
++}
+ 
+-module.exports = getGlyph
++proto.isTransparent = function() {
++  return this.opacity < 1
++}
+ 
+-var GLYPH_CACHE = {}
++proto.pickSlots = 1
+ 
+-function getGlyph(symbol, font) {
+-  var fontCache = GLYPH_CACHE[font]
+-  if(!fontCache) {
+-    fontCache = GLYPH_CACHE[font] = {}
+-  }
+-  if(symbol in fontCache) {
+-    return fontCache[symbol]
+-  }
++proto.setPickBase = function(id) {
++  this.pickId = id
++}
+ 
+-  //Get line and triangle meshes for glyph
+-  var lineSymbol = vectorizeText(symbol, {
+-      textAlign: "center",
+-      textBaseline: "middle",
+-      lineHeight: 1.0,
+-      font: font
+-    }) 
+-  var triSymbol = vectorizeText(symbol, {
+-      triangles: true,
+-      textAlign: "center",
+-      textBaseline: "middle",
+-      lineHeight: 1.0,
+-      font: font
+-    })
++function genColormap(param) {
++  var colors = colormap({
++      colormap: param
++    , nshades:  256
++    , format:  'rgba'
++  })
+ 
+-  //Calculate bounding box
+-  var bounds = [[Infinity,Infinity], [-Infinity,-Infinity]]
+-  for(var i=0; i<lineSymbol.positions.length; ++i) {
+-    var p = lineSymbol.positions[i]
+-    for(var j=0; j<2; ++j) {
+-      bounds[0][j] = Math.min(bounds[0][j], p[j])
+-      bounds[1][j] = Math.max(bounds[1][j], p[j])
++  var result = new Uint8Array(256*4)
++  for(var i=0; i<256; ++i) {
++    var c = colors[i]
++    for(var j=0; j<3; ++j) {
++      result[4*i+j] = c[j]
+     }
++    result[4*i+3] = c[3]*255
+   }
+ 
+-  //Save cached symbol
+-  return fontCache[symbol] = [triSymbol, lineSymbol, bounds]
++  return ndarray(result, [256,256,4], [4,0,1])
+ }
+-},{"vectorize-text":460}],198:[function(require,module,exports){
+-var createShaderWrapper = require('gl-shader')
+-
+-
+-var perspectiveVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\n\nuniform vec4 highlightId;\nuniform float highlightScale;\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   || \n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = 1.0;\n    if(distance(highlightId, id) < 0.0001) {\n      scale = highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1);\n    vec4 viewPosition = view * worldPosition;\n    viewPosition = viewPosition / viewPosition.w;\n    vec4 clipPosition = projection * (viewPosition + scale * vec4(glyph.x, -glyph.y, 0, 0));\n    \n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
+-var orthographicVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float highlightScale, pixelRatio;\nuniform vec4 highlightId;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = pixelRatio;\n    if(distance(highlightId.bgr, id.bgr) < 0.001) {\n      scale *= highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1.0);\n    vec4 viewPosition = view * worldPosition;\n    vec4 clipPosition = projection * viewPosition;\n    clipPosition /= clipPosition.w;\n    \n    gl_Position = clipPosition + vec4(screenSize * scale * vec2(glyph.x, -glyph.y), 0.0, 0.0);\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
+-var projectionVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform float highlightScale;\nuniform vec4 highlightId;\nuniform vec3 axes[2];\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float scale, pixelRatio;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   ||\n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float lscale = pixelRatio * scale;\n    if(distance(highlightId, id) < 0.0001) {\n      lscale *= highlightScale;\n    }\n\n    vec4 clipCenter   = projection * view * model * vec4(position, 1);\n    vec3 dataPosition = position + 0.5*lscale*(axes[0] * glyph.x + axes[1] * glyph.y) * clipCenter.w * screenSize.y;\n    vec4 clipPosition = projection * view * model * vec4(dataPosition, 1);\n\n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = dataPosition;\n  }\n}\n"
+-var drawFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float opacity;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   ||\n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = interpColor * opacity;\n  }\n}\n"
+-var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float pickGroup;\n\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   || \n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = vec4(pickGroup, pickId.bgr);\n  }\n}"
+-
+-var ATTRIBUTES = [
+-  {name: 'position', type: 'vec3'},
+-  {name: 'color', type: 'vec4'},
+-  {name: 'glyph', type: 'vec2'},
+-  {name: 'id', type: 'vec4'}
+-]
+ 
+-var perspective = {
+-    vertex: perspectiveVertSrc,
+-    fragment: drawFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  ortho = {
+-    vertex: orthographicVertSrc,
+-    fragment: drawFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  project = {
+-    vertex: projectionVertSrc,
+-    fragment: drawFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  pickPerspective = {
+-    vertex: perspectiveVertSrc,
+-    fragment: pickFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  pickOrtho = {
+-    vertex: orthographicVertSrc,
+-    fragment: pickFragSrc,
+-    attributes: ATTRIBUTES
+-  },
+-  pickProject = {
+-    vertex: projectionVertSrc,
+-    fragment: pickFragSrc,
+-    attributes: ATTRIBUTES
++function unpackIntensity(cells, numVerts, cellIntensity) {
++  var result = new Array(numVerts)
++  for(var i=0; i<numVerts; ++i) {
++    result[i] = 0
+   }
+-
+-function createShader(gl, src) {
+-  var shader = createShaderWrapper(gl, src)
+-  var attr = shader.attributes
+-  attr.position.location = 0
+-  attr.color.location = 1
+-  attr.glyph.location = 2
+-  attr.id.location = 3
+-  return shader
++  var numCells = cells.length
++  for(var i=0; i<numCells; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      result[c[j]] = cellIntensity[i]
++    }
++  }
++  return result
+ }
+ 
+-exports.createPerspective = function(gl) {
+-  return createShader(gl, perspective)
+-}
+-exports.createOrtho = function(gl) {
+-  return createShader(gl, ortho)
+-}
+-exports.createProject = function(gl) {
+-  return createShader(gl, project)
+-}
+-exports.createPickPerspective = function(gl) {
+-  return createShader(gl, pickPerspective)
+-}
+-exports.createPickOrtho = function(gl) {
+-  return createShader(gl, pickOrtho)
+-}
+-exports.createPickProject = function(gl) {
+-  return createShader(gl, pickProject)
++function takeZComponent(array) {
++  var n = array.length
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = array[i][2]
++  }
++  return result
+ }
+ 
+-},{"gl-shader":203}],199:[function(require,module,exports){
+-'use strict'
+-
+-var createBuffer  = require('gl-buffer')
+-var createVAO     = require('gl-vao')
+-var pool          = require('typedarray-pool')
+-var mat4mult      = require('gl-mat4/multiply')
+-var shaders       = require('./lib/shaders')
+-var getGlyph      = require('./lib/glyphs')
+-
+-var IDENTITY = [1,0,0,0,
+-                0,1,0,0,
+-                0,0,1,0,
+-                0,0,0,1]
+-
+-module.exports = createPointCloud
+-
+-function transformMat4(x, m) {
+-  var x0 = x[0]
+-  var x1 = x[1]
+-  var x2 = x[2]
+-  var x3 = x[3]
+-  x[0] = m[0] * x0 + m[4] * x1 + m[8]  * x2 + m[12] * x3
+-  x[1] = m[1] * x0 + m[5] * x1 + m[9]  * x2 + m[13] * x3
+-  x[2] = m[2] * x0 + m[6] * x1 + m[10] * x2 + m[14] * x3
+-  x[3] = m[3] * x0 + m[7] * x1 + m[11] * x2 + m[15] * x3
+-  return x
++proto.highlight = function(selection) {
++  if(!selection || !this.contourEnable) {
++    this.contourCount = 0
++    return
++  }
++  var level = getContour(this.cells, this.intensity, selection.intensity)
++  var cells         = level.cells
++  var vertexIds     = level.vertexIds
++  var vertexWeights = level.vertexWeights
++  var numCells = cells.length
++  var result = pool.mallocFloat32(2 * 3 * numCells)
++  var ptr = 0
++  for(var i=0; i<numCells; ++i) {
++    var c = cells[i]
++    for(var j=0; j<2; ++j) {
++      var v = c[0]
++      if(c.length === 2) {
++        v = c[j]
++      }
++      var a = vertexIds[v][0]
++      var b = vertexIds[v][1]
++      var w = vertexWeights[v]
++      var wi = 1.0 - w
++      var pa = this.positions[a]
++      var pb = this.positions[b]
++      for(var k=0; k<3; ++k) {
++        result[ptr++] = w * pa[k] + wi * pb[k]
++      }
++    }
++  }
++  this.contourCount = (ptr / 3)|0
++  this.contourPositions.update(result.subarray(0, ptr))
++  pool.free(result)
+ }
+ 
+-function project(p, v, m, x) {
+-  transformMat4(x, x, m)
+-  transformMat4(x, x, v)
+-  return transformMat4(x, x, p)
+-}
++proto.update = function(params) {
++  params = params || {}
++  var gl = this.gl
+ 
+-function clampVec(v) {
+-  var result = new Array(3)
+-  for(var i=0; i<3; ++i) {
+-    result[i] = Math.min(Math.max(v[i], -1e8), 1e8)
++  this.dirty = true
++
++  if('contourEnable' in params) {
++    this.contourEnable = params.contourEnable
++  }
++  if('contourColor' in params) {
++    this.contourColor = params.contourColor
++  }
++  if('lineWidth' in params) {
++    this.lineWidth = params.lineWidth
++  }
++  if('lightPosition' in params) {
++    this.lightPosition = params.lightPosition
++  }
++  if('opacity' in params) {
++    this.opacity = params.opacity
++  }
++  if('ambient' in params) {
++    this.ambientLight  = params.ambient
++  }
++  if('diffuse' in params) {
++    this.diffuseLight = params.diffuse
++  }
++  if('specular' in params) {
++    this.specularLight = params.specular
++  }
++  if('roughness' in params) {
++    this.roughness = params.roughness
++  }
++  if('fresnel' in params) {
++    this.fresnel = params.fresnel
+   }
+-  return result
+-}
+ 
+-function ScatterPlotPickResult(index, position) {
+-  this.index = index
+-  this.dataCoordinate = this.position = position
+-}
++  if(params.texture) {
++    this.texture.dispose()
++    this.texture = createTexture(gl, params.texture)
++  } else if (params.colormap) {
++    this.texture.shape = [256,256]
++    this.texture.minFilter = gl.LINEAR_MIPMAP_LINEAR
++    this.texture.magFilter = gl.LINEAR
++    this.texture.setPixels(genColormap(params.colormap))
++    this.texture.generateMipmap()
++  }
+ 
+-function PointCloud(
+-  gl,
+-  shader,
+-  orthoShader,
+-  projectShader,
+-  pointBuffer,
+-  colorBuffer,
+-  glyphBuffer,
+-  idBuffer,
+-  vao,
+-  pickPerspectiveShader,
+-  pickOrthoShader,
+-  pickProjectShader) {
++  var cells = params.cells
++  var positions = params.positions
+ 
+-  this.gl              = gl
++  if(!positions || !cells) {
++    return
++  }
+ 
+-  this.pixelRatio      = 1
++  var tPos = []
++  var tCol = []
++  var tNor = []
++  var tUVs = []
++  var tIds = []
+ 
+-  this.shader          = shader
+-  this.orthoShader     = orthoShader
+-  this.projectShader   = projectShader
++  var ePos = []
++  var eCol = []
++  var eUVs = []
++  var eIds = []
+ 
+-  this.pointBuffer     = pointBuffer
+-  this.colorBuffer     = colorBuffer
+-  this.glyphBuffer     = glyphBuffer
+-  this.idBuffer        = idBuffer
+-  this.vao             = vao
+-  this.vertexCount     = 0
+-  this.lineVertexCount = 0
++  var pPos = []
++  var pCol = []
++  var pUVs = []
++  var pSiz = []
++  var pIds = []
+ 
+-  this.opacity         = 1.0
++  //Save geometry data for picking calculations
++  this.cells     = cells
++  this.positions = positions
+ 
+-  this.lineWidth       = 0
+-  this.projectScale    = [2.0/3.0, 2.0/3.0, 2.0/3.0]
+-  this.projectOpacity  = [1,1,1]
++  //Compute normals
++  var vertexNormals = params.vertexNormals
++  var cellNormals   = params.cellNormals
++  var vertexNormalsEpsilon = params.vertexNormalsEpsilon === void(0) ? DEFAULT_VERTEX_NORMALS_EPSILON : params.vertexNormalsEpsilon
++  var faceNormalsEpsilon = params.faceNormalsEpsilon === void(0) ? DEFAULT_FACE_NORMALS_EPSILON : params.faceNormalsEpsilon
++  if(params.useFacetNormals && !cellNormals) {
++    cellNormals = normals.faceNormals(cells, positions, faceNormalsEpsilon)
++  }
++  if(!cellNormals && !vertexNormals) {
++    vertexNormals = normals.vertexNormals(cells, positions, vertexNormalsEpsilon)
++  }
+ 
+-  this.pickId                = 0
+-  this.pickPerspectiveShader = pickPerspectiveShader
+-  this.pickOrthoShader       = pickOrthoShader
+-  this.pickProjectShader     = pickProjectShader
+-  this.points                = []
++  //Compute colors
++  var vertexColors    = params.vertexColors
++  var cellColors      = params.cellColors
++  var meshColor       = params.meshColor || [1,1,1,1]
+ 
+-  this._selectResult = new ScatterPlotPickResult(0, [0,0,0])
++  //UVs
++  var vertexUVs       = params.vertexUVs
++  var vertexIntensity = params.vertexIntensity
++  var cellUVs         = params.cellUVs
++  var cellIntensity   = params.cellIntensity
+ 
+-  this.useOrtho = true
+-  this.bounds   = [[ Infinity,Infinity,Infinity],
+-                   [-Infinity,-Infinity,-Infinity]]
++  var intensityLo     = Infinity
++  var intensityHi     = -Infinity
++  if(!vertexUVs && !cellUVs) {
++    if(vertexIntensity) {
++      for(var i=0; i<vertexIntensity.length; ++i) {
++        var f = vertexIntensity[i]
++        intensityLo = Math.min(intensityLo, f)
++        intensityHi = Math.max(intensityHi, f)
++      }
++    } else if(cellIntensity) {
++      for(var i=0; i<cellIntensity.length; ++i) {
++        var f = cellIntensity[i]
++        intensityLo = Math.min(intensityLo, f)
++        intensityHi = Math.max(intensityHi, f)
++      }
++    } else {
++      for(var i=0; i<positions.length; ++i) {
++        var f = positions[i][2]
++        intensityLo = Math.min(intensityLo, f)
++        intensityHi = Math.max(intensityHi, f)
++      }
++    }
++  }
+ 
+-  //Axes projections
+-  this.axesProject = [ true, true, true ]
+-  this.axesBounds = [[-Infinity,-Infinity,-Infinity],
+-                     [ Infinity, Infinity, Infinity]]
++  if(vertexIntensity) {
++    this.intensity = vertexIntensity
++  } else if(cellIntensity) {
++    this.intensity = unpackIntensity(cells, positions.length, cellIntensity)
++  } else {
++    this.intensity = takeZComponent(positions)
++  }
+ 
+-  this.highlightId    = [1,1,1,1]
+-  this.highlightScale = 2
++  //Point size
++  var pointSizes      = params.pointSizes
++  var meshPointSize   = params.pointSize || 1.0
+ 
+-  this.clipBounds = [[-Infinity,-Infinity,-Infinity],
+-                     [ Infinity, Infinity, Infinity]]
++  //Update bounds
++  this.bounds       = [[Infinity,Infinity,Infinity], [-Infinity,-Infinity,-Infinity]]
++  for(var i=0; i<positions.length; ++i) {
++    var p = positions[i]
++    for(var j=0; j<3; ++j) {
++      if(isNaN(p[j]) || !isFinite(p[j])) {
++        continue
++      }
++      this.bounds[0][j] = Math.min(this.bounds[0][j], p[j])
++      this.bounds[1][j] = Math.max(this.bounds[1][j], p[j])
++    }
++  }
+ 
+-  this.dirty = true
+-}
++  //Pack cells into buffers
++  var triangleCount = 0
++  var edgeCount = 0
++  var pointCount = 0
+ 
+-var proto = PointCloud.prototype
++fill_loop:
++  for(var i=0; i<cells.length; ++i) {
++    var cell = cells[i]
++    switch(cell.length) {
++      case 1:
+ 
+-proto.pickSlots = 1
++        var v = cell[0]
++        var p = positions[v]
+ 
+-proto.setPickBase = function(pickBase) {
+-  this.pickId = pickBase
+-}
++        //Check NaNs
++        for(var j=0; j<3; ++j) {
++          if(isNaN(p[j]) || !isFinite(p[j])) {
++            continue fill_loop
++          }
++        }
+ 
+-proto.isTransparent = function() {
+-  if(this.opacity < 1)  {
+-    return true
+-  }
+-  for(var i=0; i<3; ++i) {
+-    if(this.axesProject[i] && this.projectOpacity[i] < 1) {
+-      return true
+-    }
+-  }
+-  return false
+-}
++        pPos.push(p[0], p[1], p[2])
+ 
+-proto.isOpaque = function() {
+-  if(this.opacity >= 1)  {
+-    return true
+-  }
+-  for(var i=0; i<3; ++i) {
+-    if(this.axesProject[i] && this.projectOpacity[i] >= 1) {
+-      return true
+-    }
+-  }
+-  return false
+-}
++        var c
++        if(vertexColors) {
++          c = vertexColors[v]
++        } else if(cellColors) {
++          c = cellColors[i]
++        } else {
++          c = meshColor
++        }
++        if(c.length === 3) {
++          pCol.push(c[0], c[1], c[2], 1)
++        } else {
++          pCol.push(c[0], c[1], c[2], c[3])
++        }
+ 
+-var VIEW_SHAPE = [0,0]
+-var U_VEC = [0,0,0]
+-var V_VEC = [0,0,0]
+-var MU_VEC = [0,0,0,1]
+-var MV_VEC = [0,0,0,1]
+-var SCRATCH_MATRIX = IDENTITY.slice()
+-var SCRATCH_VEC = [0,0,0]
+-var CLIP_BOUNDS = [[0,0,0], [0,0,0]]
++        var uv
++        if(vertexUVs) {
++          uv = vertexUVs[v]
++        } else if(vertexIntensity) {
++          uv = [
++            (vertexIntensity[v] - intensityLo) /
++            (intensityHi - intensityLo), 0]
++        } else if(cellUVs) {
++          uv = cellUVs[i]
++        } else if(cellIntensity) {
++          uv = [
++            (cellIntensity[i] - intensityLo) /
++            (intensityHi - intensityLo), 0]
++        } else {
++          uv = [
++            (p[2] - intensityLo) /
++            (intensityHi - intensityLo), 0]
++        }
++        pUVs.push(uv[0], uv[1])
+ 
+-function zeroVec(a) {
+-  a[0] = a[1] = a[2] = 0
+-  return a
+-}
++        if(pointSizes) {
++          pSiz.push(pointSizes[v])
++        } else {
++          pSiz.push(meshPointSize)
++        }
+ 
+-function augment(hg, af) {
+-  hg[0] = af[0]
+-  hg[1] = af[1]
+-  hg[2] = af[2]
+-  hg[3] = 1
+-  return hg
+-}
++        pIds.push(i)
+ 
+-function setComponent(out, v, i, x) {
+-  out[0] = v[0]
+-  out[1] = v[1]
+-  out[2] = v[2]
+-  out[i] = x
+-  return out
+-}
++        pointCount += 1
++      break
+ 
+-function getClipBounds(bounds) {
+-  var result = CLIP_BOUNDS
+-  for(var i=0; i<2; ++i) {
+-    for(var j=0; j<3; ++j) {
+-      result[i][j] = Math.max(Math.min(bounds[i][j], 1e8), -1e8)
+-    }
+-  }
+-  return result
+-}
++      case 2:
+ 
+-function drawProject(shader, points, camera, transparent, forceDraw) {
+-  var axesProject = points.axesProject
++        //Check NaNs
++        for(var j=0; j<2; ++j) {
++          var v = cell[j]
++          var p = positions[v]
++          for(var k=0; k<3; ++k) {
++            if(isNaN(p[k]) || !isFinite(p[k])) {
++              continue fill_loop
++            }
++          }
++        }
+ 
+-  var gl         = points.gl
+-  var uniforms   = shader.uniforms
+-  var model      = camera.model      || IDENTITY
+-  var view       = camera.view       || IDENTITY
+-  var projection = camera.projection || IDENTITY
+-  var bounds     = points.axesBounds
+-  var clipBounds = getClipBounds(points.clipBounds)
++        for(var j=0; j<2; ++j) {
++          var v = cell[j]
++          var p = positions[v]
+ 
+-  var cubeAxis
+-  if(points.axes) {
+-    cubeAxis = points.axes.lastCubeProps.axis
+-  } else {
+-    cubeAxis = [1,1,1]
+-  }
++          ePos.push(p[0], p[1], p[2])
+ 
+-  VIEW_SHAPE[0] = 2.0/gl.drawingBufferWidth
+-  VIEW_SHAPE[1] = 2.0/gl.drawingBufferHeight
++          var c
++          if(vertexColors) {
++            c = vertexColors[v]
++          } else if(cellColors) {
++            c = cellColors[i]
++          } else {
++            c = meshColor
++          }
++          if(c.length === 3) {
++            eCol.push(c[0], c[1], c[2], 1)
++          } else {
++            eCol.push(c[0], c[1], c[2], c[3])
++          }
+ 
+-  shader.bind()
+-  uniforms.view           = view
+-  uniforms.projection     = projection
+-  uniforms.screenSize     = VIEW_SHAPE
+-  uniforms.highlightId    = points.highlightId
+-  uniforms.highlightScale = points.highlightScale
+-  uniforms.clipBounds     = clipBounds
+-  uniforms.pickGroup      = points.pickId / 255.0
+-  uniforms.pixelRatio     = points.pixelRatio
++          var uv
++          if(vertexUVs) {
++            uv = vertexUVs[v]
++          } else if(vertexIntensity) {
++            uv = [
++              (vertexIntensity[v] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else if(cellUVs) {
++            uv = cellUVs[i]
++          } else if(cellIntensity) {
++            uv = [
++              (cellIntensity[i] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else {
++            uv = [
++              (p[2] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          }
++          eUVs.push(uv[0], uv[1])
+ 
+-  for(var i=0; i<3; ++i) {
+-    if(!axesProject[i]) {
+-      continue
+-    }
+-    if((points.projectOpacity[i] < 1) !== transparent) {
+-      continue
+-    }
++          eIds.push(i)
++        }
++        edgeCount += 1
++      break
+ 
+-    uniforms.scale          = points.projectScale[i]
+-    uniforms.opacity        = points.projectOpacity[i]
++      case 3:
++        //Check NaNs
++        for(var j=0; j<3; ++j) {
++          var v = cell[j]
++          var p = positions[v]
++          for(var k=0; k<3; ++k) {
++            if(isNaN(p[k]) || !isFinite(p[k])) {
++              continue fill_loop
++            }
++          }
++        }
+ 
+-    //Project model matrix
+-    var pmodel = SCRATCH_MATRIX
+-    for(var j=0; j<16; ++j) {
+-      pmodel[j] = 0
+-    }
+-    for(var j=0; j<4; ++j) {
+-      pmodel[5*j] = 1
+-    }
+-    pmodel[5*i] = 0
+-    if(cubeAxis[i] < 0) {
+-      pmodel[12+i] = bounds[0][i]
+-    } else {
+-      pmodel[12+i] = bounds[1][i]
+-    }
+-    mat4mult(pmodel, model, pmodel)
+-    uniforms.model = pmodel
++        for(var j=0; j<3; ++j) {
++          var v = cell[j]
+ 
+-    //Compute initial axes
+-    var u = (i+1)%3
+-    var v = (i+2)%3
+-    var du = zeroVec(U_VEC)
+-    var dv = zeroVec(V_VEC)
+-    du[u] = 1
+-    dv[v] = 1
++          var p = positions[v]
++          tPos.push(p[0], p[1], p[2])
+ 
+-    //Align orientation relative to viewer
+-    var mdu = project(projection, view, model, augment(MU_VEC, du))
+-    var mdv = project(projection, view, model, augment(MV_VEC, dv))
+-    if(Math.abs(mdu[1]) > Math.abs(mdv[1])) {
+-      var tmp = mdu
+-      mdu = mdv
+-      mdv = tmp
+-      tmp = du
+-      du = dv
+-      dv = tmp
+-      var t = u
+-      u = v
+-      v = t
+-    }
+-    if(mdu[0] < 0) {
+-      du[u] = -1
+-    }
+-    if(mdv[1] > 0) {
+-      dv[v] = -1
+-    }
+-    var su = 0.0
+-    var sv = 0.0
+-    for(var j=0; j<4; ++j) {
+-      su += Math.pow(model[4*u+j], 2)
+-      sv += Math.pow(model[4*v+j], 2)
+-    }
+-    du[u] /= Math.sqrt(su)
+-    dv[v] /= Math.sqrt(sv)
+-    uniforms.axes[0] = du
+-    uniforms.axes[1] = dv
++          var c
++          if(vertexColors) {
++            c = vertexColors[v]
++          } else if(cellColors) {
++            c = cellColors[i]
++          } else {
++            c = meshColor
++          }
++          if(c.length === 3) {
++            tCol.push(c[0], c[1], c[2], 1)
++          } else {
++            tCol.push(c[0], c[1], c[2], c[3])
++          }
+ 
+-    //Update fragment clip bounds
+-    uniforms.fragClipBounds[0] = setComponent(SCRATCH_VEC, clipBounds[0], i, -1e8)
+-    uniforms.fragClipBounds[1] = setComponent(SCRATCH_VEC, clipBounds[1], i, 1e8)
++          var uv
++          if(vertexUVs) {
++            uv = vertexUVs[v]
++          } else if(vertexIntensity) {
++            uv = [
++              (vertexIntensity[v] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else if(cellUVs) {
++            uv = cellUVs[i]
++          } else if(cellIntensity) {
++            uv = [
++              (cellIntensity[i] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          } else {
++            uv = [
++              (p[2] - intensityLo) /
++              (intensityHi - intensityLo), 0]
++          }
++          tUVs.push(uv[0], uv[1])
++
++          var q
++          if(vertexNormals) {
++            q = vertexNormals[v]
++          } else {
++            q = cellNormals[i]
++          }
++          tNor.push(q[0], q[1], q[2])
+ 
+-    //Draw interior
+-    points.vao.draw(gl.TRIANGLES, points.vertexCount)
++          tIds.push(i)
++        }
++        triangleCount += 1
++      break
+ 
+-    //Draw edges
+-    if(points.lineWidth > 0) {
+-      gl.lineWidth(points.lineWidth)
+-      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
++      default:
++      break
+     }
+   }
+-}
+ 
++  this.pointCount     = pointCount
++  this.edgeCount      = edgeCount
++  this.triangleCount  = triangleCount
+ 
+-var NEG_INFINITY3 = [-1e8, -1e8, -1e8]
+-var POS_INFINITY3 = [1e8, 1e8, 1e8]
+-var CLIP_GROUP    = [NEG_INFINITY3, POS_INFINITY3]
++  this.pointPositions.update(pPos)
++  this.pointColors.update(pCol)
++  this.pointUVs.update(pUVs)
++  this.pointSizes.update(pSiz)
++  this.pointIds.update(new Uint32Array(pIds))
+ 
+-function drawFull(shader, pshader, points, camera, transparent, forceDraw) {
+-  var gl = points.gl
++  this.edgePositions.update(ePos)
++  this.edgeColors.update(eCol)
++  this.edgeUVs.update(eUVs)
++  this.edgeIds.update(new Uint32Array(eIds))
+ 
+-  points.vao.bind()
++  this.trianglePositions.update(tPos)
++  this.triangleColors.update(tCol)
++  this.triangleUVs.update(tUVs)
++  this.triangleNormals.update(tNor)
++  this.triangleIds.update(new Uint32Array(tIds))
++}
+ 
+-  if(transparent === (points.opacity < 1) || forceDraw) {
+-    shader.bind()
+-    var uniforms = shader.uniforms
++proto.drawTransparent = proto.draw = function(params) {
++  params = params || {}
++  var gl          = this.gl
++  var model       = params.model      || identityMatrix
++  var view        = params.view       || identityMatrix
++  var projection  = params.projection || identityMatrix
+ 
+-    uniforms.model      = camera.model      || IDENTITY
+-    uniforms.view       = camera.view       || IDENTITY
+-    uniforms.projection = camera.projection || IDENTITY
++  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
++  for(var i=0; i<3; ++i) {
++    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
++    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
++  }
+ 
+-    VIEW_SHAPE[0]       = 2.0/gl.drawingBufferWidth
+-    VIEW_SHAPE[1]       = 2.0/gl.drawingBufferHeight
+-    uniforms.screenSize = VIEW_SHAPE
++  var uniforms = {
++    model:      model,
++    view:       view,
++    projection: projection,
+ 
+-    uniforms.highlightId    = points.highlightId
+-    uniforms.highlightScale = points.highlightScale
++    clipBounds: clipBounds,
+ 
+-    uniforms.fragClipBounds = CLIP_GROUP
+-    uniforms.clipBounds     = points.axes.bounds
++    kambient:   this.ambientLight,
++    kdiffuse:   this.diffuseLight,
++    kspecular:  this.specularLight,
++    roughness:  this.roughness,
++    fresnel:    this.fresnel,
+ 
+-    uniforms.opacity    = points.opacity
+-    uniforms.pickGroup  = points.pickId / 255.0
++    eyePosition:   [0,0,0],
++    lightPosition: [0,0,0],
+ 
+-    uniforms.pixelRatio = points.pixelRatio
++    opacity:  this.opacity,
+ 
+-    //Draw interior
+-    points.vao.draw(gl.TRIANGLES, points.vertexCount)
++    contourColor: this.contourColor,
+ 
+-    //Draw edges
+-    if(points.lineWidth > 0) {
+-      gl.lineWidth(points.lineWidth)
+-      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
+-    }
++    texture:    0
+   }
+ 
+-  drawProject(pshader, points, camera, transparent, forceDraw)
+-
+-  points.vao.unbind()
+-}
+-
+-proto.draw = function(camera) {
+-  var shader = this.useOrtho ? this.orthoShader : this.shader
+-  drawFull(shader, this.projectShader, this, camera, false, false)
+-}
+-
+-proto.drawTransparent = function(camera) {
+-  var shader = this.useOrtho ? this.orthoShader : this.shader
+-  drawFull(shader, this.projectShader, this, camera, true, false)
+-}
++  this.texture.bind(0)
+ 
+-proto.drawPick = function(camera) {
+-  var shader = this.useOrtho ? this.pickOrthoShader : this.pickPerspectiveShader
+-  drawFull(shader, this.pickProjectShader, this, camera, false, true)
+-}
++  var invCameraMatrix = new Array(16)
++  multiply(invCameraMatrix, uniforms.view, uniforms.model)
++  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
++  invert(invCameraMatrix, invCameraMatrix)
+ 
+-proto.pick = function(selected) {
+-  if(!selected) {
+-    return null
+-  }
+-  if(selected.id !== this.pickId) {
+-    return null
+-  }
+-  var x = selected.value[2] + (selected.value[1]<<8) + (selected.value[0]<<16)
+-  if(x >= this.pointCount || x < 0) {
+-    return null
++  for(var i=0; i<3; ++i) {
++    uniforms.eyePosition[i] = invCameraMatrix[12+i] / invCameraMatrix[15]
+   }
+ 
+-  //Unpack result
+-  var coord = this.points[x]
+-  var result = this._selectResult
+-  result.index = x
++  var w = invCameraMatrix[15]
+   for(var i=0; i<3; ++i) {
+-    result.position[i] = result.dataCoordinate[i] = coord[i]
++    w += this.lightPosition[i] * invCameraMatrix[4*i+3]
+   }
+-  return result
+-}
+-
+-proto.highlight = function(selection) {
+-  if(!selection) {
+-    this.highlightId = [1,1,1,1]
+-  } else {
+-    var pointId = selection.index
+-    var a0 =  pointId     &0xff
+-    var a1 = (pointId>>8) &0xff
+-    var a2 = (pointId>>16)&0xff
+-    this.highlightId = [a0/255.0, a1/255.0, a2/255.0, 0]
++  for(var i=0; i<3; ++i) {
++    var s = invCameraMatrix[12+i]
++    for(var j=0; j<3; ++j) {
++      s += invCameraMatrix[4*j+i] * this.lightPosition[j]
++    }
++    uniforms.lightPosition[i] = s / w
+   }
+-}
+-
+-proto.update = function(options) {
+ 
+-  options = options || {}
++  if(this.triangleCount > 0) {
++    var shader = this.triShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-  if('perspective' in options) {
+-    this.useOrtho = !options.perspective
+-  }
+-  if('orthographic' in options) {
+-    this.useOrtho = !!options.orthographic
+-  }
+-  if('lineWidth' in options) {
+-    this.lineWidth = options.lineWidth
+-  }
+-  if('project' in options) {
+-    if(Array.isArray(options.project)) {
+-      this.axesProject = options.project
+-    } else {
+-      var v = !!options.project
+-      this.axesProject = [v,v,v]
+-    }
+-  }
+-  if('projectScale' in options) {
+-    if(Array.isArray(options.projectScale)) {
+-      this.projectScale = options.projectScale.slice()
+-    } else {
+-      var s = +options.projectScale
+-      this.projectScale = [s,s,s]
+-    }
+-  }
+-  if('projectOpacity' in options) {
+-    if(Array.isArray(options.projectOpacity)) {
+-      this.projectOpacity = options.projectOpacity.slice()
+-    } else {
+-      var s = +options.projectOpacity
+-      this.projectOpacity = [s,s,s]
+-    }
+-  }
+-  if('opacity' in options) {
+-    this.opacity = options.opacity
++    this.triangleVAO.bind()
++    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
++    this.triangleVAO.unbind()
+   }
+ 
+-  //Set dirty flag
+-  this.dirty = true
++  if(this.edgeCount > 0 && this.lineWidth > 0) {
++    var shader = this.lineShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-  //Create new buffers
+-  var points = options.position
+-  if(!points) {
+-    return
++    this.edgeVAO.bind()
++    gl.lineWidth(this.lineWidth)
++    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
++    this.edgeVAO.unbind()
+   }
+ 
+-  //Text font
+-  var font      = options.font      || 'normal'
+-  var alignment = options.alignment || [0,0]
+-
+-  //Bounds
+-  var lowerBound = [ Infinity, Infinity, Infinity]
+-  var upperBound = [-Infinity,-Infinity,-Infinity]
++  if(this.pointCount > 0) {
++    var shader = this.pointShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-  //Unpack options
+-  var glyphs     = options.glyph
+-  var colors     = options.color
+-  var sizes      = options.size
+-  var angles     = options.angle
+-  var lineColors = options.lineColor
++    this.pointVAO.bind()
++    gl.drawArrays(gl.POINTS, 0, this.pointCount)
++    this.pointVAO.unbind()
++  }
+ 
+-  //Picking geometry
+-  var pickCounter = 0
++  if(this.contourEnable && this.contourCount > 0 && this.contourLineWidth > 0) {
++    var shader = this.contourShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-  //First do pass to compute buffer sizes
+-  var triVertexCount     = 0
+-  var lineVertexCount = 0
++    this.contourVAO.bind()
++    gl.drawArrays(gl.LINES, 0, this.contourCount)
++    this.contourVAO.unbind()
++  }
++}
+ 
+-  //Count number of points and buffer size
+-  var numPoints   = points.length
++proto.drawPick = function(params) {
++  params = params || {}
+ 
+-count_loop:
+-  for(var i=0; i<numPoints; ++i) {
+-    var x = points[i]
+-    for(var j=0; j<3; ++j) {
+-      if(isNaN(x[j]) || !isFinite(x[j])) {
+-        continue count_loop
+-      }
+-    }
++  var gl         = this.gl
+ 
+-    var glyphData
+-    if(Array.isArray(glyphs)) {
+-      glyphData = getGlyph(glyphs[i], font)
+-    } else if(glyphs) {
+-      glyphData = getGlyph(glyphs, font)
+-    } else {
+-      glyphData = getGlyph('●', font)
+-    }
+-    var glyphMesh   = glyphData[0]
+-    var glyphLines  = glyphData[1]
+-    var glyphBounds = glyphData[2]
++  var model      = params.model      || identityMatrix
++  var view       = params.view       || identityMatrix
++  var projection = params.projection || identityMatrix
+ 
+-    triVertexCount  += glyphMesh.cells.length * 3
+-    lineVertexCount += glyphLines.edges.length * 2
++  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
++  for(var i=0; i<3; ++i) {
++    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
++    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
+   }
+ 
++  //Save camera parameters
++  this._model      = [].slice.call(model)
++  this._view       = [].slice.call(view)
++  this._projection = [].slice.call(projection)
++  this._resolution = [gl.drawingBufferWidth, gl.drawingBufferHeight]
+ 
+-  //Preallocate data
+-  var vertexCount   = triVertexCount + lineVertexCount
+-  var positionArray = pool.mallocFloat(3*vertexCount)
+-  var colorArray    = pool.mallocFloat(4*vertexCount)
+-  var glyphArray    = pool.mallocFloat(2*vertexCount)
+-  var idArray       = pool.mallocUint32(vertexCount)
+-
+-  var textOffset = [0,alignment[1]]
+-
+-  var triOffset  = 0
+-  var lineOffset = triVertexCount
+-  var color      = [0,0,0,1]
+-  var lineColor  = [0,0,0,1]
+-
+-  var isColorArray      = Array.isArray(colors)     && Array.isArray(colors[0])
+-  var isLineColorArray  = Array.isArray(lineColors) && Array.isArray(lineColors[0])
++  var uniforms = {
++    model:      model,
++    view:       view,
++    projection: projection,
++    clipBounds: clipBounds,
++    pickId:     this.pickId / 255.0,
++  }
+ 
+-fill_loop:
+-  for(var i=0; i<numPoints; ++i) {
+-    var x = points[i]
+-    for(var j=0; j<3; ++j) {
+-      if(isNaN(x[j]) || !isFinite(x[j])) {
+-        pickCounter += 1
+-        continue fill_loop
+-      }
++  var shader = this.pickShader
++  shader.bind()
++  shader.uniforms = uniforms
+ 
+-      upperBound[j] = Math.max(upperBound[j], x[j])
+-      lowerBound[j] = Math.min(lowerBound[j], x[j])
+-    }
++  if(this.triangleCount > 0) {
++    this.triangleVAO.bind()
++    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
++    this.triangleVAO.unbind()
++  }
+ 
+-    var glyphData
+-    if(Array.isArray(glyphs)) {
+-      glyphData = getGlyph(glyphs[i], font)
+-    } else if(glyphs) {
+-      glyphData = getGlyph(glyphs, font)
+-    } else {
+-      glyphData = getGlyph('●', font)
+-    }
+-    var glyphMesh   = glyphData[0]
+-    var glyphLines  = glyphData[1]
+-    var glyphBounds = glyphData[2]
++  if(this.edgeCount > 0) {
++    this.edgeVAO.bind()
++    gl.lineWidth(this.lineWidth)
++    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
++    this.edgeVAO.unbind()
++  }
+ 
++  if(this.pointCount > 0) {
++    var shader = this.pointPickShader
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-    //Get color
+-    if(Array.isArray(colors)) {
+-      var c
+-      if(isColorArray) {
+-        c = colors[i]
+-      } else {
+-        c = colors
+-      }
+-      if(c.length === 3) {
+-        for(var j=0; j<3; ++j) {
+-          color[j] = c[j]
+-        }
+-        color[3] = 1
+-      } else if(c.length === 4) {
+-        for(var j=0; j<4; ++j) {
+-          color[j] = c[j]
+-        }
+-      }
+-    } else {
+-      color[0] = color[1] = color[2] = 0
+-      color[3] = 1
+-    }
++    this.pointVAO.bind()
++    gl.drawArrays(gl.POINTS, 0, this.pointCount)
++    this.pointVAO.unbind()
++  }
++}
+ 
+-    //Get lineColor
+-    if(Array.isArray(lineColors)) {
+-      var c
+-      if(isLineColorArray) {
+-        c = lineColors[i]
+-      } else {
+-        c = lineColors
+-      }
+-      if(c.length === 3) {
+-        for(var j=0; j<3; ++j) {
+-          lineColor[j] = c[j]
+-        }
+-        lineColor[j] = 1
+-      } else if(c.length === 4) {
+-        for(var j=0; j<4; ++j) {
+-          lineColor[j] = c[j]
+-        }
+-      }
+-    } else {
+-      lineColor[0] = lineColor[1] = lineColor[2] = 0
+-      lineColor[3] = 1
+-    }
+ 
+-    var size = 0.5
+-    if(Array.isArray(sizes)) {
+-      size = +sizes[i]
+-    } else if(sizes) {
+-      size = +sizes
+-    } else if(this.useOrtho) {
+-      size = 12
+-    }
++proto.pick = function(pickData) {
++  if(!pickData) {
++    return null
++  }
++  if(pickData.id !== this.pickId) {
++    return null
++  }
+ 
+-    var angle = 0
+-    if(Array.isArray(angles)) {
+-      angle = +angles[i]
+-    } else if(angles) {
+-      angle = +angles
+-    }
++  var cellId    = pickData.value[0] + 256*pickData.value[1] + 65536*pickData.value[2]
++  var cell      = this.cells[cellId]
++  var positions = this.positions
+ 
+-    //Loop through markers and append to buffers
+-    var cos = Math.cos(angle)
+-    var sin = Math.sin(angle)
++  var simplex   = new Array(cell.length)
++  for(var i=0; i<cell.length; ++i) {
++    simplex[i] = positions[cell[i]]
++  }
+ 
+-    var x = points[i]
+-    for(var j=0; j<3; ++j) {
+-      upperBound[j] = Math.max(upperBound[j], x[j])
+-      lowerBound[j] = Math.min(lowerBound[j], x[j])
+-    }
++  var data = closestPoint(
++    simplex,
++    [pickData.coord[0], this._resolution[1]-pickData.coord[1]],
++    this._model,
++    this._view,
++    this._projection,
++    this._resolution)
+ 
+-    //Calculate text offset
+-    if(alignment[0] < 0) {
+-      textOffset[0] = alignment[0]  * (1+glyphBounds[1][0])
+-    } else if(alignment[0] > 0) {
+-      textOffset[0] = -alignment[0] * (1+glyphBounds[0][0])
+-    }
++  if(!data) {
++    return null
++  }
+ 
+-    //Write out inner marker
+-    var cells = glyphMesh.cells
+-    var verts = glyphMesh.positions
++  var weights = data[2]
++  var interpIntensity = 0.0
++  for(var i=0; i<cell.length; ++i) {
++    interpIntensity += weights[i] * this.intensity[cell[i]]
++  }
+ 
+-    for(var j=0; j<cells.length; ++j) {
+-      var cell = cells[j]
+-      for(var k=0; k<3; ++k) {
+-        for(var l=0; l<3; ++l) {
+-          positionArray[3*triOffset+l] = x[l]
+-        }
+-        for(var l=0; l<4; ++l) {
+-          colorArray[4*triOffset+l] = color[l]
+-        }
+-        idArray[triOffset] = pickCounter
+-        var p = verts[cell[k]]
+-        glyphArray[2*triOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
+-        glyphArray[2*triOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
+-        triOffset += 1
+-      }
+-    }
++  return {
++    position: data[1],
++    index:    cell[data[0]],
++    cell:     cell,
++    cellId:   cellId,
++    intensity:  interpIntensity,
++    dataCoordinate: this.positions[cell[data[0]]]
++  }
++}
+ 
+-    var cells = glyphLines.edges
+-    var verts = glyphLines.positions
+ 
+-    for(var j=0; j<cells.length; ++j) {
+-      var cell = cells[j]
+-      for(var k=0; k<2; ++k) {
+-        for(var l=0; l<3; ++l) {
+-          positionArray[3*lineOffset+l] = x[l]
+-        }
+-        for(var l=0; l<4; ++l) {
+-          colorArray[4*lineOffset+l] = lineColor[l]
+-        }
+-        idArray[lineOffset] = pickCounter
+-        var p = verts[cell[k]]
+-        glyphArray[2*lineOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
+-        glyphArray[2*lineOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
+-        lineOffset += 1
+-      }
+-    }
++proto.dispose = function() {
++  this.texture.dispose()
+ 
+-    //Increment pickCounter
+-    pickCounter += 1
+-  }
++  this.triShader.dispose()
++  this.lineShader.dispose()
++  this.pointShader.dispose()
++  this.pickShader.dispose()
++  this.pointPickShader.dispose()
+ 
++  this.triangleVAO.dispose()
++  this.trianglePositions.dispose()
++  this.triangleColors.dispose()
++  this.triangleUVs.dispose()
++  this.triangleNormals.dispose()
++  this.triangleIds.dispose()
+ 
+-  //Update vertex counts
+-  this.vertexCount      = triVertexCount
+-  this.lineVertexCount  = lineVertexCount
++  this.edgeVAO.dispose()
++  this.edgePositions.dispose()
++  this.edgeColors.dispose()
++  this.edgeUVs.dispose()
++  this.edgeIds.dispose()
+ 
+-  //Update buffers
+-  this.pointBuffer.update(positionArray)
+-  this.colorBuffer.update(colorArray)
+-  this.glyphBuffer.update(glyphArray)
+-  this.idBuffer.update(new Uint32Array(idArray))
++  this.pointVAO.dispose()
++  this.pointPositions.dispose()
++  this.pointColors.dispose()
++  this.pointUVs.dispose()
++  this.pointSizes.dispose()
++  this.pointIds.dispose()
+ 
+-  pool.free(positionArray)
+-  pool.free(colorArray)
+-  pool.free(glyphArray)
+-  pool.free(idArray)
++  this.contourVAO.dispose()
++  this.contourPositions.dispose()
++  this.contourShader.dispose()
++}
+ 
+-  //Update bounds
+-  this.bounds = [lowerBound, upperBound]
++function createMeshShader(gl) {
++  var shader = createShader(gl, meshShader)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location    = 2
++  shader.attributes.uv.location       = 3
++  shader.attributes.normal.location   = 4
++  return shader
++}
+ 
+-  //Save points
+-  this.points = points
++function createWireShader(gl) {
++  var shader = createShader(gl, wireShader)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location    = 2
++  shader.attributes.uv.location       = 3
++  return shader
++}
+ 
+-  //Save number of points
+-  this.pointCount = points.length
++function createPointShader(gl) {
++  var shader = createShader(gl, pointShader)
++  shader.attributes.position.location  = 0
++  shader.attributes.color.location     = 2
++  shader.attributes.uv.location        = 3
++  shader.attributes.pointSize.location = 4
++  return shader
+ }
+ 
+-proto.dispose = function() {
+-  //Shaders
+-  this.shader.dispose()
+-  this.orthoShader.dispose()
+-  this.pickPerspectiveShader.dispose()
+-  this.pickOrthoShader.dispose()
++function createPickShader(gl) {
++  var shader = createShader(gl, pickShader)
++  shader.attributes.position.location = 0
++  shader.attributes.id.location       = 1
++  return shader
++}
+ 
+-  //Vertex array
+-  this.vao.dispose()
++function createPointPickShader(gl) {
++  var shader = createShader(gl, pointPickShader)
++  shader.attributes.position.location  = 0
++  shader.attributes.id.location        = 1
++  shader.attributes.pointSize.location = 4
++  return shader
++}
+ 
+-  //Buffers
+-  this.pointBuffer.dispose()
+-  this.colorBuffer.dispose()
+-  this.glyphBuffer.dispose()
+-  this.idBuffer.dispose()
++function createContourShader(gl) {
++  var shader = createShader(gl, contourShader)
++  shader.attributes.position.location = 0
++  return shader
+ }
+ 
+-function createPointCloud(options) {
+-  var gl = options.gl
++function createSimplicialMesh(params) {
++  var gl = params.gl
+ 
+-  var shader                = shaders.createPerspective(gl)
+-  var orthoShader           = shaders.createOrtho(gl)
+-  var projectShader         = shaders.createProject(gl)
+-  var pickPerspectiveShader = shaders.createPickPerspective(gl)
+-  var pickOrthoShader       = shaders.createPickOrtho(gl)
+-  var pickProjectShader     = shaders.createPickProject(gl)
++  var triShader       = createMeshShader(gl)
++  var lineShader      = createWireShader(gl)
++  var pointShader     = createPointShader(gl)
++  var pickShader      = createPickShader(gl)
++  var pointPickShader = createPointPickShader(gl)
++  var contourShader   = createContourShader(gl)
+ 
+-  var pointBuffer = createBuffer(gl)
+-  var colorBuffer = createBuffer(gl)
+-  var glyphBuffer = createBuffer(gl)
+-  var idBuffer    = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    {
+-      buffer: pointBuffer,
+-      size: 3,
+-      type: gl.FLOAT
++  var meshTexture       = createTexture(gl,
++    ndarray(new Uint8Array([255,255,255,255]), [1,1,4]))
++  meshTexture.generateMipmap()
++  meshTexture.minFilter = gl.LINEAR_MIPMAP_LINEAR
++  meshTexture.magFilter = gl.LINEAR
++
++  var trianglePositions = createBuffer(gl)
++  var triangleColors    = createBuffer(gl)
++  var triangleUVs       = createBuffer(gl)
++  var triangleNormals   = createBuffer(gl)
++  var triangleIds       = createBuffer(gl)
++  var triangleVAO       = createVAO(gl, [
++    { buffer: trianglePositions,
++      type: gl.FLOAT,
++      size: 3
+     },
+-    {
+-      buffer: colorBuffer,
++    { buffer: triangleIds,
++      type: gl.UNSIGNED_BYTE,
+       size: 4,
+-      type: gl.FLOAT
++      normalized: true
+     },
+-    {
+-      buffer: glyphBuffer,
+-      size: 2,
+-      type: gl.FLOAT
++    { buffer: triangleColors,
++      type: gl.FLOAT,
++      size: 4
+     },
+-    {
+-      buffer: idBuffer,
+-      size: 4,
++    { buffer: triangleUVs,
++      type: gl.FLOAT,
++      size: 2
++    },
++    { buffer: triangleNormals,
++      type: gl.FLOAT,
++      size: 3
++    }
++  ])
++
++  var edgePositions = createBuffer(gl)
++  var edgeColors    = createBuffer(gl)
++  var edgeUVs       = createBuffer(gl)
++  var edgeIds       = createBuffer(gl)
++  var edgeVAO       = createVAO(gl, [
++    { buffer: edgePositions,
++      type: gl.FLOAT,
++      size: 3
++    },
++    { buffer: edgeIds,
+       type: gl.UNSIGNED_BYTE,
++      size: 4,
+       normalized: true
++    },
++    { buffer: edgeColors,
++      type: gl.FLOAT,
++      size: 4
++    },
++    { buffer: edgeUVs,
++      type: gl.FLOAT,
++      size: 2
+     }
+   ])
+ 
+-  var pointCloud = new PointCloud(
+-    gl,
+-    shader,
+-    orthoShader,
+-    projectShader,
+-    pointBuffer,
+-    colorBuffer,
+-    glyphBuffer,
+-    idBuffer,
+-    vao,
+-    pickPerspectiveShader,
+-    pickOrthoShader,
+-    pickProjectShader)
+-
+-  pointCloud.update(options)
++  var pointPositions  = createBuffer(gl)
++  var pointColors     = createBuffer(gl)
++  var pointUVs        = createBuffer(gl)
++  var pointSizes      = createBuffer(gl)
++  var pointIds        = createBuffer(gl)
++  var pointVAO        = createVAO(gl, [
++    { buffer: pointPositions,
++      type: gl.FLOAT,
++      size: 3
++    },
++    { buffer: pointIds,
++      type: gl.UNSIGNED_BYTE,
++      size: 4,
++      normalized: true
++    },
++    { buffer: pointColors,
++      type: gl.FLOAT,
++      size: 4
++    },
++    { buffer: pointUVs,
++      type: gl.FLOAT,
++      size: 2
++    },
++    { buffer: pointSizes,
++      type: gl.FLOAT,
++      size: 1
++    }
++  ])
+ 
+-  return pointCloud
+-}
++  var contourPositions = createBuffer(gl)
++  var contourVAO       = createVAO(gl, [
++    { buffer: contourPositions,
++      type:   gl.FLOAT,
++      size:   3
++    }])
+ 
+-},{"./lib/glyphs":197,"./lib/shaders":198,"gl-buffer":124,"gl-mat4/multiply":145,"gl-vao":232,"typedarray-pool":458}],200:[function(require,module,exports){
+-'use strict'
++  var mesh = new SimplicialMesh(gl
++    , meshTexture
++    , triShader
++    , lineShader
++    , pointShader
++    , pickShader
++    , pointPickShader
++    , contourShader
++    , trianglePositions
++    , triangleIds
++    , triangleColors
++    , triangleUVs
++    , triangleNormals
++    , triangleVAO
++    , edgePositions
++    , edgeIds
++    , edgeColors
++    , edgeUVs
++    , edgeVAO
++    , pointPositions
++    , pointIds
++    , pointColors
++    , pointUVs
++    , pointSizes
++    , pointVAO
++    , contourPositions
++    , contourVAO)
+ 
++  mesh.update(params)
+ 
++  return mesh
++}
+ 
+-exports.boxVertex = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n"
+-exports.boxFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"
++module.exports = createSimplicialMesh
+ 
+-},{}],201:[function(require,module,exports){
++},{"./lib/closest-point":164,"./lib/shaders":165,"colormap":75,"gl-buffer":121,"gl-mat4/invert":142,"gl-mat4/multiply":144,"gl-shader":190,"gl-texture2d":202,"gl-vao":206,"ndarray":385,"normals":387,"simplicial-complex-contour":427,"typedarray-pool":449}],167:[function(require,module,exports){
+ 'use strict'
+ 
+-var createShader = require('gl-shader')
+-var createBuffer = require('gl-buffer')
+-
+-var SHADERS = require('./lib/shaders')
+-
+-module.exports = createSelectBox
+-
+-function SelectBox(plot, boxBuffer, boxShader) {
+-  this.plot = plot
+-  this.boxBuffer = boxBuffer
+-  this.boxShader = boxShader
++module.exports = createBoxes
+ 
+-  this.enabled = true
++var createBuffer = require('gl-buffer')
++var createShader = require('gl-shader')
+ 
+-  this.selectBox = [Infinity,Infinity,-Infinity,-Infinity]
++var shaders = require('./shaders')
+ 
+-  this.borderColor = [0,0,0,1]
+-  this.innerFill   = false
+-  this.innerColor  = [0,0,0,0.25]
+-  this.outerFill   = true
+-  this.outerColor  = [0,0,0,0.5]
+-  this.borderWidth = 10
++function Boxes(plot, vbo, shader) {
++  this.plot   = plot
++  this.vbo    = vbo
++  this.shader = shader
+ }
+ 
+-var proto = SelectBox.prototype
+-
+-proto.draw = function() {
+-  if(!this.enabled) {
+-    return
+-  }
+-
+-  var plot         = this.plot
+-  var selectBox    = this.selectBox
+-  var lineWidth    = this.borderWidth
+-
+-  var innerFill    = this.innerFill
+-  var innerColor   = this.innerColor
+-  var outerFill    = this.outerFill
+-  var outerColor   = this.outerColor
+-  var borderColor  = this.borderColor
+-
+-  var boxes        = plot.box
+-  var screenBox    = plot.screenBox
+-  var dataBox      = plot.dataBox
+-  var viewBox      = plot.viewBox
+-  var pixelRatio   = plot.pixelRatio
+-
+-  //Map select box into pixel coordinates
+-  var loX = (selectBox[0]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
+-  var loY = (selectBox[1]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
+-  var hiX = (selectBox[2]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
+-  var hiY = (selectBox[3]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
+-
+-  loX = Math.max(loX, viewBox[0])
+-  loY = Math.max(loY, viewBox[1])
+-  hiX = Math.min(hiX, viewBox[2])
+-  hiY = Math.min(hiY, viewBox[3])
+-
+-  if(hiX < loX || hiY < loY) {
+-    return
+-  }
+-
+-  boxes.bind()
++var proto = Boxes.prototype
+ 
+-  //Draw box
+-  var screenWidth  = screenBox[2] - screenBox[0]
+-  var screenHeight = screenBox[3] - screenBox[1]
++proto.bind = function() {
++  var shader = this.shader
++  this.vbo.bind()
++  this.shader.bind()
++  shader.attributes.coord.pointer()
++  shader.uniforms.screenBox = this.plot.screenBox
++}
+ 
+-  if(this.outerFill) {
+-    boxes.drawBox(0, 0, screenWidth, loY, outerColor)
+-    boxes.drawBox(0, loY, loX, hiY, outerColor)
+-    boxes.drawBox(0, hiY, screenWidth, screenHeight, outerColor)
+-    boxes.drawBox(hiX, loY, screenWidth, hiY, outerColor)
+-  }
++proto.drawBox = (function() {
++  var lo = [0,0]
++  var hi = [0,0]
++  return function(loX, loY, hiX, hiY, color) {
++    var plot       = this.plot
++    var shader     = this.shader
++    var gl         = plot.gl
+ 
+-  if(this.innerFill) {
+-    boxes.drawBox(loX, loY, hiX, hiY, innerColor)
+-  }
++    lo[0] = loX
++    lo[1] = loY
++    hi[0] = hiX
++    hi[1] = hiY
+ 
+-  //Draw border
+-  if(lineWidth > 0) {
++    shader.uniforms.lo     = lo
++    shader.uniforms.hi     = hi
++    shader.uniforms.color  = color
+ 
+-    //Draw border
+-    var w = lineWidth * pixelRatio
+-    boxes.drawBox(loX-w, loY-w, hiX+w, loY+w, borderColor)
+-    boxes.drawBox(loX-w, hiY-w, hiX+w, hiY+w, borderColor)
+-    boxes.drawBox(loX-w, loY-w, loX+w, hiY+w, borderColor)
+-    boxes.drawBox(hiX-w, loY-w, hiX+w, hiY+w, borderColor)
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
+   }
+-}
+-
+-proto.update = function(options) {
+-  options = options || {}
+-
+-  this.innerFill    = !!options.innerFill
+-  this.outerFill    = !!options.outerFill
+-  this.innerColor   = (options.innerColor   || [0,0,0,0.5]).slice()
+-  this.outerColor   = (options.outerColor   || [0,0,0,0.5]).slice()
+-  this.borderColor  = (options.borderColor || [0,0,0,1]).slice()
+-  this.borderWidth  = options.borderWidth || 0
+-  this.selectBox    = (options.selectBox || this.selectBox).slice()
+-}
++}())
+ 
+ proto.dispose = function() {
+-  this.boxBuffer.dispose()
+-  this.boxShader.dispose()
+-  this.plot.removeOverlay(this)
++  this.vbo.dispose()
++  this.shader.dispose()
+ }
+ 
+-function createSelectBox(plot, options) {
+-  var gl = plot.gl
+-  var buffer = createBuffer(gl, [
+-    0, 0,
+-    0, 1,
+-    1, 0,
+-    1, 1 ])
+-  var shader = createShader(gl, SHADERS.boxVertex, SHADERS.boxFragment)
+-  var selectBox = new SelectBox(plot, buffer, shader)
+-  selectBox.update(options)
+-  plot.addOverlay(selectBox)
+-  return selectBox
++function createBoxes(plot) {
++  var gl  = plot.gl
++  var vbo = createBuffer(gl, [
++    0,0,
++    0,1,
++    1,0,
++    1,1])
++  var shader  = createShader(gl, shaders.boxVert, shaders.lineFrag)
++  return new Boxes(plot, vbo, shader)
+ }
+ 
+-},{"./lib/shaders":200,"gl-buffer":124,"gl-shader":203}],202:[function(require,module,exports){
++},{"./shaders":170,"gl-buffer":121,"gl-shader":190}],168:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createSelectBuffer
+-
+-var createFBO = require('gl-fbo')
+-var pool      = require('typedarray-pool')
+-var ndarray   = require('ndarray')
+-
+-var nextPow2  = require('bit-twiddle').nextPow2
++module.exports = createGrid
+ 
+-var selectRange = require('cwise/lib/wrapper')({"args":["array",{"offset":[0,0,1],"array":0},{"offset":[0,0,2],"array":0},{"offset":[0,0,3],"array":0},"scalar","scalar","index"],"pre":{"body":"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"body":{"body":"{if(255>_inline_46_arg0_||255>_inline_46_arg1_||255>_inline_46_arg2_||255>_inline_46_arg3_){var _inline_46_l=_inline_46_arg4_-_inline_46_arg6_[0],_inline_46_a=_inline_46_arg5_-_inline_46_arg6_[1],_inline_46_f=_inline_46_l*_inline_46_l+_inline_46_a*_inline_46_a;_inline_46_f<this_closestD2&&(this_closestD2=_inline_46_f,this_closestX=_inline_46_arg6_[0],this_closestY=_inline_46_arg6_[1])}}","args":[{"name":"_inline_46_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg4_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg5_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg6_","lvalue":false,"rvalue":true,"count":4}],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":["_inline_46_a","_inline_46_f","_inline_46_l"]},"post":{"body":"{return[this_closestX,this_closestY,this_closestD2]}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
++var createBuffer  = require('gl-buffer')
++var createShader  = require('gl-shader')
++var bsearch       = require('binary-search-bounds')
++var shaders       = require('./shaders')
+ 
+-function SelectResult(x, y, id, value, distance) {
+-  this.coord = [x, y]
+-  this.id = id
+-  this.value = value
+-  this.distance = distance
++function Grid(plot, vbo, shader, tickShader) {
++  this.plot   = plot
++  this.vbo    = vbo
++  this.shader = shader
++  this.tickShader = tickShader
++  this.ticks  = [[], []]
+ }
+ 
+-function SelectBuffer(gl, fbo, buffer) {
+-  this.gl     = gl
+-  this.fbo    = fbo
+-  this.buffer = buffer
+-  this._readTimeout = null
+-  var self = this
+-
+-  this._readCallback = function() {
+-    if(!self.gl) {
+-      return
+-    }
+-    fbo.bind()
+-    gl.readPixels(0,0,fbo.shape[0],fbo.shape[1],gl.RGBA,gl.UNSIGNED_BYTE,self.buffer)
+-    self._readTimeout = null
+-  }
++function compareTickNum(a, b) {
++  return a - b
+ }
+ 
+-var proto = SelectBuffer.prototype
+-
+-Object.defineProperty(proto, 'shape', {
+-  get: function() {
+-    if(!this.gl) {
+-      return [0,0]
+-    }
+-    return this.fbo.shape.slice()
+-  },
+-  set: function(v) {
+-    if(!this.gl) {
+-      return
+-    }
+-    this.fbo.shape = v
+-    var c = this.fbo.shape[0]
+-    var r = this.fbo.shape[1]
+-    if(r*c*4 > this.buffer.length) {
+-      pool.free(this.buffer)
+-      var buffer = this.buffer = pool.mallocUint8(nextPow2(r*c*4))
+-      for(var i=0; i<r*c*4; ++i) {
+-        buffer[i] = 0xff
+-      }
+-    }
+-    return v
+-  }
+-})
+-
+-proto.begin = function() {
+-  var gl = this.gl
+-  var shape = this.shape
+-  if(!gl) {
+-    return
+-  }
++var proto = Grid.prototype
+ 
+-  this.fbo.bind()
+-  gl.clearColor(1,1,1,1)
+-  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+-}
++proto.draw = (function() {
+ 
+-proto.end = function() {
+-  var gl = this.gl
+-  if(!gl) {
+-    return
+-  }
+-  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+-  if(!this._readTimeout) {
+-    clearTimeout(this._readTimeout)
+-  }
+-  this._readTimeout = setTimeout(this._readCallback, 1)
+-}
++  var DATA_SHIFT = [0,0]
++  var DATA_SCALE = [0,0]
++  var DATA_AXIS  = [0,0]
+ 
+-proto.query = function(x, y, radius) {
+-  if(!this.gl) {
+-    return null
+-  }
++  return function() {
++    var plot       = this.plot
++    var vbo        = this.vbo
++    var shader     = this.shader
++    var ticks      = this.ticks
++    var gl         = plot.gl
++    var bounds     = plot._tickBounds
++    var dataBox    = plot.dataBox
++    var viewPixels = plot.viewBox
++    var lineWidth  = plot.gridLineWidth
++    var gridColor  = plot.gridLineColor
++    var gridEnable = plot.gridLineEnable
++    var pixelRatio = plot.pixelRatio
+ 
+-  var shape = this.fbo.shape.slice()
++    for(var i=0; i<2; ++i) {
++      var lo = bounds[i]
++      var hi = bounds[i+2]
++      var boundScale = hi - lo
++      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
++      var dataWidth   = dataBox[i+2] - dataBox[i]
++      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
++      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
++    }
+ 
+-  x = x|0
+-  y = y|0
+-  if(typeof radius !== 'number') {
+-    radius = 1.0
+-  }
++    shader.bind()
++    vbo.bind()
++    shader.attributes.dataCoord.pointer()
++    shader.uniforms.dataShift = DATA_SHIFT
++    shader.uniforms.dataScale = DATA_SCALE
+ 
+-  var x0 = Math.min(Math.max(x - radius, 0), shape[0])|0
+-  var x1 = Math.min(Math.max(x + radius, 0), shape[0])|0
+-  var y0 = Math.min(Math.max(y - radius, 0), shape[1])|0
+-  var y1 = Math.min(Math.max(y + radius, 0), shape[1])|0
++    var offset = 0
++    for(var i=0; i<2; ++i) {
++      DATA_AXIS[0] = DATA_AXIS[1] = 0
++      DATA_AXIS[i] = 1
++      shader.uniforms.dataAxis  = DATA_AXIS
++      shader.uniforms.lineWidth = lineWidth[i] / (viewPixels[i+2] - viewPixels[i]) * pixelRatio
++      shader.uniforms.color     = gridColor[i]
+ 
+-  if(x1 <= x0 || y1 <= y0) {
+-    return null
++      var size = ticks[i].length * 6
++      if(gridEnable[i] && size) {
++        gl.drawArrays(gl.TRIANGLES, offset, size)
++      }
++      offset += size
++    }
+   }
++})()
+ 
+-  var dims   = [x1-x0,y1-y0]
+-  var region = ndarray(
+-    this.buffer,
+-    [dims[0], dims[1], 4],
+-    [4, shape[0]*4, 1],
+-    4*(x0 + shape[0]*y0));
+-
+-  var closest = selectRange(region.hi(dims[0],dims[1],1), radius, radius)
+-  var dx = closest[0]
+-  var dy = closest[1]
+-  if(dx < 0 || Math.pow(this.radius, 2) < closest[2]) {
+-    return null
+-  }
++proto.drawTickMarks = (function() {
++  var DATA_SHIFT = [0,0]
++  var DATA_SCALE = [0,0]
++  var X_AXIS     = [1,0]
++  var Y_AXIS     = [0,1]
++  var SCR_OFFSET = [0,0]
++  var TICK_SCALE = [0,0]
+ 
+-  var c0 = region.get(dx, dy, 0)
+-  var c1 = region.get(dx, dy, 1)
+-  var c2 = region.get(dx, dy, 2)
+-  var c3 = region.get(dx, dy, 3)
++  return function() {
++    var plot       = this.plot
++    var vbo        = this.vbo
++    var shader     = this.tickShader
++    var ticks      = this.ticks
++    var gl         = plot.gl
++    var bounds     = plot._tickBounds
++    var dataBox    = plot.dataBox
++    var viewBox    = plot.viewBox
++    var pixelRatio = plot.pixelRatio
++    var screenBox  = plot.screenBox
+ 
+-  return new SelectResult(
+-     (dx + x0)|0,
+-     (dy + y0)|0,
+-     c0,
+-     [c1, c2, c3],
+-     Math.sqrt(closest[2]))
+-}
++    var screenWidth  = screenBox[2] - screenBox[0]
++    var screenHeight = screenBox[3] - screenBox[1]
++    var viewWidth    = viewBox[2]   - viewBox[0]
++    var viewHeight   = viewBox[3]   - viewBox[1]
+ 
+-proto.dispose = function() {
+-  if(!this.gl) {
+-    return
+-  }
+-  this.fbo.dispose()
+-  pool.free(this.buffer)
+-  this.gl = null
+-  if(this._readTimeout) {
+-    clearTimeout(this._readTimeout)
+-  }
+-}
++    for(var i=0; i<2; ++i) {
++      var lo = bounds[i]
++      var hi = bounds[i+2]
++      var boundScale = hi - lo
++      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
++      var dataWidth   = (dataBox[i+2] - dataBox[i])
++      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
++      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
++    }
+ 
+-function createSelectBuffer(gl, shape) {
+-  var fbo = createFBO(gl, shape)
+-  var buffer = pool.mallocUint8(shape[0]*shape[1]*4)
+-  return new SelectBuffer(gl, fbo, buffer)
+-}
++    DATA_SCALE[0] *= viewWidth / screenWidth
++    DATA_SHIFT[0] *= viewWidth / screenWidth
+ 
+-},{"bit-twiddle":51,"cwise/lib/wrapper":118,"gl-fbo":129,"ndarray":433,"typedarray-pool":458}],203:[function(require,module,exports){
+-'use strict'
++    DATA_SCALE[1] *= viewHeight / screenHeight
++    DATA_SHIFT[1] *= viewHeight / screenHeight
+ 
+-var createUniformWrapper   = require('./lib/create-uniforms')
+-var createAttributeWrapper = require('./lib/create-attributes')
+-var makeReflect            = require('./lib/reflect')
+-var shaderCache            = require('./lib/shader-cache')
+-var runtime                = require('./lib/runtime-reflect')
+-var GLError                = require("./lib/GLError")
++    shader.bind()
++    vbo.bind()
+ 
+-//Shader object
+-function Shader(gl) {
+-  this.gl         = gl
++    shader.attributes.dataCoord.pointer()
+ 
+-  //Default initialize these to null
+-  this._vref      =
+-  this._fref      =
+-  this._relink    =
+-  this.vertShader =
+-  this.fragShader =
+-  this.program    =
+-  this.attributes =
+-  this.uniforms   =
+-  this.types      = null
+-}
++    var uniforms = shader.uniforms
++    uniforms.dataShift = DATA_SHIFT
++    uniforms.dataScale = DATA_SCALE
+ 
+-var proto = Shader.prototype
++    var tickMarkLength = plot.tickMarkLength
++    var tickMarkWidth  = plot.tickMarkWidth
++    var tickMarkColor  = plot.tickMarkColor
+ 
+-proto.bind = function() {
+-  if(!this.program) {
+-    this._relink()
+-  }
+-  this.gl.useProgram(this.program)
+-}
++    var xTicksOffset = 0
++    var yTicksOffset = ticks[0].length * 6
+ 
+-proto.dispose = function() {
+-  if(this._fref) {
+-    this._fref.dispose()
+-  }
+-  if(this._vref) {
+-    this._vref.dispose()
+-  }
+-  this.attributes =
+-  this.types      =
+-  this.vertShader =
+-  this.fragShader =
+-  this.program    =
+-  this._relink    =
+-  this._fref      =
+-  this._vref      = null
+-}
++    var xStart = Math.min(bsearch.ge(ticks[0], (dataBox[0] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
++    var xEnd   = Math.min(bsearch.gt(ticks[0], (dataBox[2] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
++    var xOffset = xTicksOffset + 6 * xStart
++    var xCount  = 6 * Math.max(0, xEnd - xStart)
+ 
+-function compareAttributes(a, b) {
+-  if(a.name < b.name) {
+-    return -1
+-  }
+-  return 1
+-}
++    var yStart = Math.min(bsearch.ge(ticks[1], (dataBox[1] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
++    var yEnd   = Math.min(bsearch.gt(ticks[1], (dataBox[3] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
++    var yOffset = yTicksOffset + 6 * yStart
++    var yCount  = 6 * Math.max(0, yEnd - yStart)
+ 
+-//Update export hook for glslify-live
+-proto.update = function(
+-    vertSource
+-  , fragSource
+-  , uniforms
+-  , attributes) {
++    SCR_OFFSET[0]         = 2.0 * (viewBox[0] - tickMarkLength[1]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkLength[1] * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkWidth[1]  * pixelRatio / screenHeight
+ 
+-  //If only one object passed, assume glslify style output
+-  if(!fragSource || arguments.length === 1) {
+-    var obj = vertSource
+-    vertSource = obj.vertex
+-    fragSource = obj.fragment
+-    uniforms   = obj.uniforms
+-    attributes = obj.attributes
+-  }
++    if(yCount) {
++      uniforms.color        = tickMarkColor[1]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = Y_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
++    }
+ 
+-  var wrapper = this
+-  var gl      = wrapper.gl
++    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = 2.0 * (viewBox[1] - tickMarkLength[0]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkWidth[0]  * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkLength[0] * pixelRatio / screenHeight
+ 
+-  //Compile vertex and fragment shaders
+-  var pvref = wrapper._vref
+-  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
+-  if(pvref) {
+-    pvref.dispose()
+-  }
+-  wrapper.vertShader = wrapper._vref.shader
+-  var pfref = this._fref
+-  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
+-  if(pfref) {
+-    pfref.dispose()
+-  }
+-  wrapper.fragShader = wrapper._fref.shader
++    if(xCount) {
++      uniforms.color        = tickMarkColor[0]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = X_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
++    }
+ 
+-  //If uniforms/attributes is not specified, use RT reflection
+-  if(!uniforms || !attributes) {
++    SCR_OFFSET[0]         = 2.0 * (viewBox[2] + tickMarkLength[3]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkLength[3] * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkWidth[3]  * pixelRatio / screenHeight
+ 
+-    //Create initial test program
+-    var testProgram = gl.createProgram()
+-    gl.attachShader(testProgram, wrapper.fragShader)
+-    gl.attachShader(testProgram, wrapper.vertShader)
+-    gl.linkProgram(testProgram)
+-    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
+-      var errLog = gl.getProgramInfoLog(testProgram)
+-      throw new GLError(errLog, 'Error linking program:' + errLog)
++    if(yCount) {
++      uniforms.color        = tickMarkColor[3]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = Y_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
+     }
+ 
+-    //Load data from runtime
+-    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
+-    attributes = attributes || runtime.attributes(gl, testProgram)
++    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
++    SCR_OFFSET[1]         = 2.0 * (viewBox[3] + tickMarkLength[2]) / screenHeight - 1.0
++    TICK_SCALE[0]         = tickMarkWidth[2]  * pixelRatio / screenWidth
++    TICK_SCALE[1]         = tickMarkLength[2] * pixelRatio / screenHeight
+ 
+-    //Release test program
+-    gl.deleteProgram(testProgram)
++    if(xCount) {
++      uniforms.color        = tickMarkColor[2]
++      uniforms.tickScale    = TICK_SCALE
++      uniforms.dataAxis     = X_AXIS
++      uniforms.screenOffset = SCR_OFFSET
++      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
++    }
+   }
++})()
+ 
+-  //Sort attributes lexicographically
+-  // overrides undefined WebGL behavior for attribute locations
+-  attributes = attributes.slice()
+-  attributes.sort(compareAttributes)
++proto.update = (function() {
++  var OFFSET_X = [1,  1, -1, -1,  1, -1]
++  var OFFSET_Y = [1, -1,  1,  1, -1, -1]
+ 
+-  //Convert attribute types, read out locations
+-  var attributeUnpacked  = []
+-  var attributeNames     = []
+-  var attributeLocations = []
+-  for(var i=0; i<attributes.length; ++i) {
+-    var attr = attributes[i]
+-    if(attr.type.indexOf('mat') >= 0) {
+-      var size = attr.type.charAt(attr.type.length-1)|0
+-      var locVector = new Array(size)
+-      for(var j=0; j<size; ++j) {
+-        locVector[j] = attributeLocations.length
+-        attributeNames.push(attr.name + '[' + j + ']')
+-        if(typeof attr.location === 'number') {
+-          attributeLocations.push(attr.location + j)
+-        } else if(Array.isArray(attr.location) &&
+-                  attr.location.length === size &&
+-                  typeof attr.location[j] === 'number') {
+-          attributeLocations.push(attr.location[j]|0)
+-        } else {
+-          attributeLocations.push(-1)
++  return function(options) {
++    var ticks  = options.ticks
++    var bounds = options.bounds
++    var data   = new Float32Array(6 * 3 * (ticks[0].length + ticks[1].length))
++
++    var zeroLineEnable = this.plot.zeroLineEnable
++
++    var ptr    = 0
++    var gridTicks = [[], []]
++    for(var dim=0; dim<2; ++dim) {
++      var localTicks = gridTicks[dim]
++      var axisTicks = ticks[dim]
++      var lo = bounds[dim]
++      var hi = bounds[dim+2]
++      for(var i=0; i<axisTicks.length; ++i) {
++        var x = (axisTicks[i].x - lo) / (hi - lo)
++        localTicks.push(x)
++        for(var j=0; j<6; ++j) {
++          data[ptr++] = x
++          data[ptr++] = OFFSET_X[j]
++          data[ptr++] = OFFSET_Y[j]
+         }
+       }
+-      attributeUnpacked.push({
+-        name: attr.name,
+-        type: attr.type,
+-        locations: locVector
+-      })
+-    } else {
+-      attributeUnpacked.push({
+-        name: attr.name,
+-        type: attr.type,
+-        locations: [ attributeLocations.length ]
+-      })
+-      attributeNames.push(attr.name)
+-      if(typeof attr.location === 'number') {
+-        attributeLocations.push(attr.location|0)
+-      } else {
+-        attributeLocations.push(-1)
+-      }
+     }
+-  }
+ 
+-  //For all unspecified attributes, assign them lexicographically min attribute
+-  var curLocation = 0
+-  for(var i=0; i<attributeLocations.length; ++i) {
+-    if(attributeLocations[i] < 0) {
+-      while(attributeLocations.indexOf(curLocation) >= 0) {
+-        curLocation += 1
+-      }
+-      attributeLocations[i] = curLocation
+-    }
++    this.ticks = gridTicks
++    this.vbo.update(data)
+   }
++})()
+ 
+-  //Rebuild program and recompute all uniform locations
+-  var uniformLocations = new Array(uniforms.length)
+-  function relink() {
+-    wrapper.program = shaderCache.program(
+-        gl
+-      , wrapper._vref
+-      , wrapper._fref
+-      , attributeNames
+-      , attributeLocations)
++proto.dispose = function() {
++  this.vbo.dispose()
++  this.shader.dispose()
++  this.tickShader.dispose()
++}
+ 
+-    for(var i=0; i<uniforms.length; ++i) {
+-      uniformLocations[i] = gl.getUniformLocation(
+-          wrapper.program
+-        , uniforms[i].name)
+-    }
+-  }
++function createGrid(plot) {
++  var gl     = plot.gl
++  var vbo    = createBuffer(gl)
++  var shader = createShader(gl, shaders.gridVert, shaders.gridFrag)
++  var tickShader = createShader(gl, shaders.tickVert, shaders.gridFrag)
++  var grid   = new Grid(plot, vbo, shader, tickShader)
++  return grid
++}
+ 
+-  //Perform initial linking, reuse program used for reflection
+-  relink()
++},{"./shaders":170,"binary-search-bounds":172,"gl-buffer":121,"gl-shader":190}],169:[function(require,module,exports){
++'use strict'
+ 
+-  //Save relinking procedure, defer until runtime
+-  wrapper._relink = relink
++module.exports = createLines
+ 
+-  //Generate type info
+-  wrapper.types = {
+-    uniforms:   makeReflect(uniforms),
+-    attributes: makeReflect(attributes)
+-  }
++var createBuffer = require('gl-buffer')
++var createShader = require('gl-shader')
+ 
+-  //Generate attribute wrappers
+-  wrapper.attributes = createAttributeWrapper(
+-      gl
+-    , wrapper
+-    , attributeUnpacked
+-    , attributeLocations)
++var shaders = require('./shaders')
+ 
+-  //Generate uniform wrappers
+-  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
+-      gl
+-    , wrapper
+-    , uniforms
+-    , uniformLocations))
++function Lines(plot, vbo, shader) {
++  this.plot   = plot
++  this.vbo    = vbo
++  this.shader = shader
+ }
+ 
+-//Compiles and links a shader program with the given attribute and vertex list
+-function createShader(
+-    gl
+-  , vertSource
+-  , fragSource
+-  , uniforms
+-  , attributes) {
++var proto = Lines.prototype
+ 
+-  var shader = new Shader(gl)
++proto.bind = function() {
++  var shader = this.shader
++  this.vbo.bind()
++  this.shader.bind()
++  shader.attributes.coord.pointer()
++  shader.uniforms.screenBox = this.plot.screenBox
++}
+ 
+-  shader.update(
+-      vertSource
+-    , fragSource
+-    , uniforms
+-    , attributes)
++proto.drawLine = (function() {
++  var start = [0,0]
++  var end   = [0,0]
++  return function(startX, startY, endX, endY, width, color) {
++    var plot       = this.plot
++    var shader     = this.shader
++    var gl         = plot.gl
+ 
+-  return shader
+-}
++    start[0] = startX
++    start[1] = startY
++    end[0]   = endX
++    end[1]   = endY
+ 
+-module.exports = createShader
++    shader.uniforms.start  = start
++    shader.uniforms.end    = end
++    shader.uniforms.width  = width * plot.pixelRatio
++    shader.uniforms.color  = color
+ 
+-},{"./lib/GLError":204,"./lib/create-attributes":205,"./lib/create-uniforms":206,"./lib/reflect":207,"./lib/runtime-reflect":208,"./lib/shader-cache":209}],204:[function(require,module,exports){
+-function GLError (rawError, shortMessage, longMessage) {
+-    this.shortMessage = shortMessage || ''
+-    this.longMessage = longMessage || ''
+-    this.rawError = rawError || ''
+-    this.message =
+-      'gl-shader: ' + (shortMessage || rawError || '') +
+-      (longMessage ? '\n'+longMessage : '')
+-    this.stack = (new Error()).stack
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
++  }
++}())
++
++proto.dispose = function() {
++  this.vbo.dispose()
++  this.shader.dispose()
++}
++
++function createLines(plot) {
++  var gl  = plot.gl
++  var vbo = createBuffer(gl, [
++    -1,-1,
++    -1,1,
++    1,-1,
++    1,1])
++  var shader  = createShader(gl, shaders.lineVert, shaders.lineFrag)
++  var lines   = new Lines(plot, vbo, shader)
++  return lines
+ }
+-GLError.prototype = new Error
+-GLError.prototype.name = 'GLError'
+-GLError.prototype.constructor = GLError
+-module.exports = GLError
+ 
+-},{}],205:[function(require,module,exports){
++},{"./shaders":170,"gl-buffer":121,"gl-shader":190}],170:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createAttributeWrapper
+ 
+-var GLError = require("./GLError")
+ 
+-function ShaderAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , constFunc) {
+-  this._gl        = gl
+-  this._wrapper   = wrapper
+-  this._index     = index
+-  this._locations = locations
+-  this._dimension = dimension
+-  this._constFunc = constFunc
++var FRAGMENT = "precision lowp float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = vec4(color.xyz * color.w, color.w);\n}\n"
++
++module.exports = {
++  lineVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 start, end;\nuniform float width;\n\nvec2 perp(vec2 v) {\n  return vec2(v.y, -v.x);\n}\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  vec2 delta = normalize(perp(start - end));\n  vec2 offset = mix(start, end, 0.5 * (coord.y+1.0));\n  gl_Position = vec4(screen(offset + 0.5 * width * delta * coord.x), 0, 1);\n}\n",
++  lineFrag: FRAGMENT,
++  textVert: "#define GLSLIFY 1\nattribute vec3 textCoordinate;\n\nuniform vec2 dataScale, dataShift, dataAxis, screenOffset, textScale;\nuniform float angle;\n\nvoid main() {\n  float dataOffset  = textCoordinate.z;\n  vec2 glyphOffset  = textCoordinate.xy;\n  mat2 glyphMatrix = mat2(cos(angle), sin(angle), -sin(angle), cos(angle));\n  vec2 screenCoordinate = dataAxis * (dataScale * dataOffset + dataShift) +\n    glyphMatrix * glyphOffset * textScale + screenOffset;\n  gl_Position = vec4(screenCoordinate, 0, 1);\n}\n",
++  textFrag: FRAGMENT,
++  gridVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale;\nuniform float lineWidth;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  pos += 10.0 * dataCoord.y * vec2(dataAxis.y, -dataAxis.x) + dataCoord.z * lineWidth;\n  gl_Position = vec4(pos, 0, 1);\n}\n",
++  gridFrag: FRAGMENT,
++  boxVert:  "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 lo, hi;\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  gl_Position = vec4(screen(mix(lo, hi, coord)), 0, 1);\n}\n",
++  tickVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale, screenOffset, tickScale;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  gl_Position = vec4(pos + tickScale*dataCoord.yz + screenOffset, 0, 1);\n}\n"
+ }
+ 
+-var proto = ShaderAttribute.prototype
++},{}],171:[function(require,module,exports){
++'use strict'
+ 
+-proto.pointer = function setAttribPointer(
+-    type
+-  , normalized
+-  , stride
+-  , offset) {
++module.exports = createTextElements
+ 
+-  var self      = this
+-  var gl        = self._gl
+-  var location  = self._locations[self._index]
++var createBuffer = require('gl-buffer')
++var createShader = require('gl-shader')
++var getText      = require('text-cache')
++var bsearch      = require('binary-search-bounds')
++var shaders      = require('./shaders')
+ 
+-  gl.vertexAttribPointer(
+-      location
+-    , self._dimension
+-    , type || gl.FLOAT
+-    , !!normalized
+-    , stride || 0
+-    , offset || 0)
+-  gl.enableVertexAttribArray(location)
++function TextElements(plot, vbo, shader) {
++  this.plot         = plot
++  this.vbo          = vbo
++  this.shader       = shader
++  this.tickOffset   = [[],[]]
++  this.tickX        = [[],[]]
++  this.labelOffset  = [0,0]
++  this.labelCount   = [0,0]
+ }
+ 
+-proto.set = function(x0, x1, x2, x3) {
+-  return this._constFunc(this._locations[this._index], x0, x1, x2, x3)
+-}
++var proto = TextElements.prototype
+ 
+-Object.defineProperty(proto, 'location', {
+-  get: function() {
+-    return this._locations[this._index]
+-  }
+-  , set: function(v) {
+-    if(v !== this._locations[this._index]) {
+-      this._locations[this._index] = v|0
+-      this._wrapper.program = null
+-    }
+-    return v|0
+-  }
+-})
++proto.drawTicks = (function() {
++  var DATA_AXIS = [0,0]
++  var SCREEN_OFFSET = [0,0]
++  var ZERO_2 = [0,0]
+ 
+-//Adds a vector attribute to obj
+-function addVectorAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , obj
+-  , name) {
++  return function(axis) {
++    var plot        = this.plot
++    var shader      = this.shader
++    var tickX       = this.tickX[axis]
++    var tickOffset  = this.tickOffset[axis]
++    var gl          = plot.gl
++    var viewBox     = plot.viewBox
++    var dataBox     = plot.dataBox
++    var screenBox   = plot.screenBox
++    var pixelRatio  = plot.pixelRatio
++    var tickEnable  = plot.tickEnable
++    var tickPad     = plot.tickPad
++    var textColor   = plot.tickColor
++    var textAngle   = plot.tickAngle
++    var tickLength  = plot.tickMarkLength
+ 
+-  //Construct constant function
+-  var constFuncArgs = [ 'gl', 'v' ]
+-  var varNames = []
+-  for(var i=0; i<dimension; ++i) {
+-    constFuncArgs.push('x'+i)
+-    varNames.push('x'+i)
+-  }
+-  constFuncArgs.push(
+-    'if(x0.length===void 0){return gl.vertexAttrib' +
+-    dimension + 'f(v,' +
+-    varNames.join() +
+-    ')}else{return gl.vertexAttrib' +
+-    dimension +
+-    'fv(v,x0)}')
+-  var constFunc = Function.apply(null, constFuncArgs)
++    var labelEnable = plot.labelEnable
++    var labelPad    = plot.labelPad
++    var labelColor  = plot.labelColor
++    var labelAngle  = plot.labelAngle
++    var labelOffset = this.labelOffset[axis]
++    var labelCount  = this.labelCount[axis]
+ 
+-  //Create attribute wrapper
+-  var attr = new ShaderAttribute(
+-      gl
+-    , wrapper
+-    , index
+-    , locations
+-    , dimension
+-    , constFunc)
++    var start = bsearch.lt(tickX, dataBox[axis])
++    var end   = bsearch.le(tickX, dataBox[axis+2])
+ 
+-  //Create accessor
+-  Object.defineProperty(obj, name, {
+-    set: function(x) {
+-      gl.disableVertexAttribArray(locations[index])
+-      constFunc(gl, locations[index], x)
+-      return x
+-    }
+-    , get: function() {
+-      return attr
+-    }
+-    , enumerable: true
+-  })
+-}
++    DATA_AXIS[0]    = DATA_AXIS[1] = 0
++    DATA_AXIS[axis] = 1
+ 
+-function addMatrixAttribute(
+-    gl
+-  , wrapper
+-  , index
+-  , locations
+-  , dimension
+-  , obj
+-  , name) {
++    SCREEN_OFFSET[axis] = (viewBox[2+axis] + viewBox[axis]) / (screenBox[2+axis] - screenBox[axis]) - 1.0
+ 
+-  var parts = new Array(dimension)
+-  var attrs = new Array(dimension)
+-  for(var i=0; i<dimension; ++i) {
+-    addVectorAttribute(
+-        gl
+-      , wrapper
+-      , index[i]
+-      , locations
+-      , dimension
+-      , parts
+-      , i)
+-    attrs[i] = parts[i]
+-  }
++    var screenScale = 2.0 / screenBox[2+(axis^1)] - screenBox[axis^1]
+ 
+-  Object.defineProperty(parts, 'location', {
+-    set: function(v) {
+-      if(Array.isArray(v)) {
+-        for(var i=0; i<dimension; ++i) {
+-          attrs[i].location = v[i]
+-        }
+-      } else {
+-        for(var i=0; i<dimension; ++i) {
+-          attrs[i].location = v + i
+-        }
+-      }
+-      return v
+-    }
+-    , get: function() {
+-      var result = new Array(dimension)
+-      for(var i=0; i<dimension; ++i) {
+-        result[i] = locations[index[i]]
++    SCREEN_OFFSET[axis^1] = screenScale * viewBox[axis^1] - 1.0
++    if(tickEnable[axis]) {
++      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * tickPad[axis]
++      if(start < end && tickOffset[end] > tickOffset[start]) {
++        shader.uniforms.dataAxis     = DATA_AXIS
++        shader.uniforms.screenOffset = SCREEN_OFFSET
++        shader.uniforms.color        = textColor[axis]
++        shader.uniforms.angle        = textAngle[axis]
++        gl.drawArrays(
++          gl.TRIANGLES,
++          tickOffset[start],
++          tickOffset[end] - tickOffset[start])
+       }
+-      return result
+     }
+-    , enumerable: true
+-  })
+-
+-  parts.pointer = function(type, normalized, stride, offset) {
+-    type       = type || gl.FLOAT
+-    normalized = !!normalized
+-    stride     = stride || (dimension * dimension)
+-    offset     = offset || 0
+-    for(var i=0; i<dimension; ++i) {
+-      var location = locations[index[i]]
+-      gl.vertexAttribPointer(
+-            location
+-          , dimension
+-          , type
+-          , normalized
+-          , stride
+-          , offset + i * dimension)
+-      gl.enableVertexAttribArray(location)
++    if(labelEnable[axis] && labelCount) {
++      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * labelPad[axis]
++      shader.uniforms.dataAxis     = ZERO_2
++      shader.uniforms.screenOffset = SCREEN_OFFSET
++      shader.uniforms.color        = labelColor[axis]
++      shader.uniforms.angle        = labelAngle[axis]
++      gl.drawArrays(
++        gl.TRIANGLES,
++        labelOffset,
++        labelCount)
+     }
+-  }
+-
+-  var scratch = new Array(dimension)
+-  var vertexAttrib = gl['vertexAttrib' + dimension + 'fv']
+ 
+-  Object.defineProperty(obj, name, {
+-    set: function(x) {
+-      for(var i=0; i<dimension; ++i) {
+-        var loc = locations[index[i]]
+-        gl.disableVertexAttribArray(loc)
+-        if(Array.isArray(x[0])) {
+-          vertexAttrib.call(gl, loc, x[i])
+-        } else {
+-          for(var j=0; j<dimension; ++j) {
+-            scratch[j] = x[dimension*i + j]
+-          }
+-          vertexAttrib.call(gl, loc, scratch)
+-        }
++    SCREEN_OFFSET[axis^1] = screenScale * viewBox[2+(axis^1)] - 1.0
++    if(tickEnable[axis+2]) {
++      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * tickPad[axis+2]
++      if(start < end && tickOffset[end] > tickOffset[start]) {
++        shader.uniforms.dataAxis     = DATA_AXIS
++        shader.uniforms.screenOffset = SCREEN_OFFSET
++        shader.uniforms.color        = textColor[axis+2]
++        shader.uniforms.angle        = textAngle[axis+2]
++        gl.drawArrays(
++          gl.TRIANGLES,
++          tickOffset[start],
++          tickOffset[end] - tickOffset[start])
+       }
+-      return x
+     }
+-    , get: function() {
+-      return parts
++    if(labelEnable[axis+2] && labelCount) {
++      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * labelPad[axis+2]
++      shader.uniforms.dataAxis     = ZERO_2
++      shader.uniforms.screenOffset = SCREEN_OFFSET
++      shader.uniforms.color        = labelColor[axis+2]
++      shader.uniforms.angle        = labelAngle[axis+2]
++      gl.drawArrays(
++        gl.TRIANGLES,
++        labelOffset,
++        labelCount)
+     }
+-    , enumerable: true
+-  })
+-}
+ 
+-//Create shims for attributes
+-function createAttributeWrapper(
+-    gl
+-  , wrapper
+-  , attributes
+-  , locations) {
++  }
++})()
+ 
+-  var obj = {}
+-  for(var i=0, n=attributes.length; i<n; ++i) {
++proto.drawTitle = (function() {
++  var DATA_AXIS = [0,0]
++  var SCREEN_OFFSET = [0,0]
+ 
+-    var a = attributes[i]
+-    var name = a.name
+-    var type = a.type
+-    var locs = a.locations
++  return function() {
++    var plot        = this.plot
++    var shader      = this.shader
++    var gl          = plot.gl
++    var screenBox   = plot.screenBox
++    var titleCenter = plot.titleCenter
++    var titleAngle  = plot.titleAngle
++    var titleColor  = plot.titleColor
++    var titleCenter = plot.titleCenter
++    var pixelRatio  = plot.pixelRatio
+ 
+-    switch(type) {
+-      case 'bool':
+-      case 'int':
+-      case 'float':
+-        addVectorAttribute(
+-            gl
+-          , wrapper
+-          , locs[0]
+-          , locations
+-          , 1
+-          , obj
+-          , name)
+-      break
++    if(!this.titleCount) {
++      return
++    }
+ 
+-      default:
+-        if(type.indexOf('vec') >= 0) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
+-          }
+-          addVectorAttribute(
+-              gl
+-            , wrapper
+-            , locs[0]
+-            , locations
+-            , d
+-            , obj
+-            , name)
+-        } else if(type.indexOf('mat') >= 0) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
+-          }
+-          addMatrixAttribute(
+-              gl
+-            , wrapper
+-            , locs
+-            , locations
+-            , d
+-            , obj
+-            , name)
+-        } else {
+-          throw new GLError('', 'Unknown data type for attribute ' + name + ': ' + type)
+-        }
+-      break
++    for(var i=0; i<2; ++i) {
++      SCREEN_OFFSET[i] = 2.0 * (titleCenter[i]*pixelRatio - screenBox[i]) /
++        (screenBox[2+i] - screenBox[i]) - 1
+     }
+-  }
+-  return obj
+-}
+ 
+-},{"./GLError":204}],206:[function(require,module,exports){
+-'use strict'
++    shader.bind()
++    shader.uniforms.dataAxis      = DATA_AXIS
++    shader.uniforms.screenOffset  = SCREEN_OFFSET
++    shader.uniforms.angle         = titleAngle
++    shader.uniforms.color         = titleColor
+ 
+-var coallesceUniforms = require('./reflect')
+-var GLError = require("./GLError")
++    gl.drawArrays(gl.TRIANGLES, this.titleOffset, this.titleCount)
++  }
++})()
+ 
+-module.exports = createUniformWrapper
++proto.bind = (function() {
++  var DATA_SHIFT = [0,0]
++  var DATA_SCALE = [0,0]
++  var TEXT_SCALE = [0,0]
+ 
+-//Binds a function and returns a value
+-function identity(x) {
+-  var c = new Function('y', 'return function(){return y}')
+-  return c(x)
+-}
++  return function() {
++    var plot      = this.plot
++    var shader    = this.shader
++    var bounds    = plot._tickBounds
++    var dataBox   = plot.dataBox
++    var screenBox = plot.screenBox
++    var viewBox   = plot.viewBox
+ 
+-function makeVector(length, fill) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = fill
+-  }
+-  return result
+-}
++    shader.bind()
+ 
+-//Create shims for uniforms
+-function createUniformWrapper(gl, wrapper, uniforms, locations) {
++    //Set up coordinate scaling uniforms
++    for(var i=0; i<2; ++i) {
+ 
+-  function makeGetter(index) {
+-    var proc = new Function(
+-        'gl'
+-      , 'wrapper'
+-      , 'locations'
+-      , 'return function(){return gl.getUniform(wrapper.program,locations[' + index + '])}')
+-    return proc(gl, wrapper, locations)
+-  }
++      var lo = bounds[i]
++      var hi = bounds[i+2]
++      var boundScale = hi - lo
++      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
++      var dataWidth   = (dataBox[i+2] - dataBox[i])
+ 
+-  function makePropSetter(path, index, type) {
+-    switch(type) {
+-      case 'bool':
+-      case 'int':
+-      case 'sampler2D':
+-      case 'samplerCube':
+-        return 'gl.uniform1i(locations[' + index + '],obj' + path + ')'
+-      case 'float':
+-        return 'gl.uniform1f(locations[' + index + '],obj' + path + ')'
+-      default:
+-        var vidx = type.indexOf('vec')
+-        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type')
+-          }
+-          switch(type.charAt(0)) {
+-            case 'b':
+-            case 'i':
+-              return 'gl.uniform' + d + 'iv(locations[' + index + '],obj' + path + ')'
+-            case 'v':
+-              return 'gl.uniform' + d + 'fv(locations[' + index + '],obj' + path + ')'
+-            default:
+-              throw new GLError('', 'Unrecognized data type for vector ' + name + ': ' + type)
+-          }
+-        } else if(type.indexOf('mat') === 0 && type.length === 4) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
+-          }
+-          return 'gl.uniformMatrix' + d + 'fv(locations[' + index + '],false,obj' + path + ')'
+-        } else {
+-          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
+-        }
+-      break
+-    }
+-  }
++      var viewLo = viewBox[i]
++      var viewHi = viewBox[i+2]
++      var viewScale = viewHi - viewLo
++      var screenLo = screenBox[i]
++      var screenHi = screenBox[i+2]
++      var screenScale = screenHi - screenLo
+ 
+-  function enumerateIndices(prefix, type) {
+-    if(typeof type !== 'object') {
+-      return [ [prefix, type] ]
+-    }
+-    var indices = []
+-    for(var id in type) {
+-      var prop = type[id]
+-      var tprefix = prefix
+-      if(parseInt(id) + '' === id) {
+-        tprefix += '[' + id + ']'
+-      } else {
+-        tprefix += '.' + id
+-      }
+-      if(typeof prop === 'object') {
+-        indices.push.apply(indices, enumerateIndices(tprefix, prop))
+-      } else {
+-        indices.push([tprefix, prop])
+-      }
++      DATA_SCALE[i] = 2.0 * boundScale / dataWidth * viewScale / screenScale
++      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth * viewScale / screenScale
+     }
+-    return indices
+-  }
+ 
+-  function makeSetter(type) {
+-    var code = [ 'return function updateProperty(obj){' ]
+-    var indices = enumerateIndices('', type)
+-    for(var i=0; i<indices.length; ++i) {
+-      var item = indices[i]
+-      var path = item[0]
+-      var idx  = item[1]
+-      if(locations[idx]) {
+-        code.push(makePropSetter(path, idx, uniforms[idx].type))
+-      }
+-    }
+-    code.push('return obj}')
+-    var proc = new Function('gl', 'locations', code.join('\n'))
+-    return proc(gl, locations)
+-  }
++    TEXT_SCALE[1] = 2.0 * plot.pixelRatio / (screenBox[3] - screenBox[1])
++    TEXT_SCALE[0] = TEXT_SCALE[1] * (screenBox[3] - screenBox[1]) / (screenBox[2] - screenBox[0])
+ 
+-  function defaultValue(type) {
+-    switch(type) {
+-      case 'bool':
+-        return false
+-      case 'int':
+-      case 'sampler2D':
+-      case 'samplerCube':
+-        return 0
+-      case 'float':
+-        return 0.0
+-      default:
+-        var vidx = type.indexOf('vec')
+-        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid data type')
+-          }
+-          if(type.charAt(0) === 'b') {
+-            return makeVector(d, false)
+-          }
+-          return makeVector(d, 0)
+-        } else if(type.indexOf('mat') === 0 && type.length === 4) {
+-          var d = type.charCodeAt(type.length-1) - 48
+-          if(d < 2 || d > 4) {
+-            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
+-          }
+-          return makeVector(d*d, 0)
+-        } else {
+-          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
+-        }
+-      break
+-    }
++    shader.uniforms.dataScale = DATA_SCALE
++    shader.uniforms.dataShift = DATA_SHIFT
++    shader.uniforms.textScale = TEXT_SCALE
++
++    //Set attributes
++    this.vbo.bind()
++    shader.attributes.textCoordinate.pointer()
+   }
++})()
++
++proto.update = function(options) {
++  var vertices  = []
++  var axesTicks = options.ticks
++  var bounds    = options.bounds
++
++  for(var dimension=0; dimension<2; ++dimension) {
++    var offsets = [Math.floor(vertices.length/3)], tickX = [-Infinity]
++
++    //Copy vertices over to buffer
++    var ticks = axesTicks[dimension]
++    for(var i=0; i<ticks.length; ++i) {
++      var tick  = ticks[i]
++      var x     = tick.x
++      var text  = tick.text
++      var font  = tick.font || 'sans-serif'
++      var scale = (tick.fontSize || 12)
+ 
+-  function storeProperty(obj, prop, type) {
+-    if(typeof type === 'object') {
+-      var child = processObject(type)
+-      Object.defineProperty(obj, prop, {
+-        get: identity(child),
+-        set: makeSetter(type),
+-        enumerable: true,
+-        configurable: false
+-      })
+-    } else {
+-      if(locations[type]) {
+-        Object.defineProperty(obj, prop, {
+-          get: makeGetter(type),
+-          set: makeSetter(type),
+-          enumerable: true,
+-          configurable: false
+-        })
+-      } else {
+-        obj[prop] = defaultValue(uniforms[type].type)
++      var data = getText(font, text).data
++
++      var coordScale = 1.0 / (bounds[dimension+2] - bounds[dimension])
++      var coordShift = bounds[dimension]
++
++      for(var j=0; j<data.length; j+=2) {
++        vertices.push(
++           data[j]  *scale,
++          -data[j+1]*scale,
++          (x - coordShift) * coordScale)
+       }
++
++      offsets.push(Math.floor(vertices.length/3))
++      tickX.push(x)
+     }
++
++    this.tickOffset[dimension] = offsets
++    this.tickX[dimension] = tickX
+   }
+ 
+-  function processObject(obj) {
+-    var result
+-    if(Array.isArray(obj)) {
+-      result = new Array(obj.length)
+-      for(var i=0; i<obj.length; ++i) {
+-        storeProperty(result, i, obj[i])
+-      }
+-    } else {
+-      result = {}
+-      for(var id in obj) {
+-        storeProperty(result, id, obj[id])
+-      }
++  //Add labels
++  for(var dimension=0; dimension<2; ++dimension) {
++    this.labelOffset[dimension] = Math.floor(vertices.length/3)
++
++    var data  = getText(options.labelFont[dimension], options.labels[dimension]).data
++    var scale = options.labelSize[dimension]
++    for(var i=0; i<data.length; i+=2) {
++      vertices.push(data[i]*scale, -data[i+1]*scale, 0)
+     }
+-    return result
++
++    this.labelCount[dimension] =
++      Math.floor(vertices.length/3) - this.labelOffset[dimension]
+   }
+ 
+-  //Return data
+-  var coallesced = coallesceUniforms(uniforms, true)
+-  return {
+-    get: identity(processObject(coallesced)),
+-    set: makeSetter(coallesced),
+-    enumerable: true,
+-    configurable: true
++  //Add title
++  this.titleOffset = Math.floor(vertices.length/3)
++  var data = getText(options.titleFont, options.title).data
++  var scale = options.titleSize
++  for(var i=0; i<data.length; i+=2) {
++    vertices.push(data[i]*scale, -data[i+1]*scale, 0)
+   }
++  this.titleCount = Math.floor(vertices.length/3) - this.titleOffset
++
++  //Upload new vertices
++  this.vbo.update(vertices)
++}
++
++proto.dispose = function() {
++  this.vbo.dispose()
++  this.shader.dispose()
++}
++
++function createTextElements(plot) {
++  var gl = plot.gl
++  var vbo = createBuffer(gl)
++  var shader = createShader(gl, shaders.textVert, shaders.textFrag)
++  var text = new TextElements(plot, vbo, shader)
++  return text
+ }
+ 
+-},{"./GLError":204,"./reflect":207}],207:[function(require,module,exports){
++},{"./shaders":170,"binary-search-bounds":172,"gl-buffer":121,"gl-shader":190,"text-cache":441}],172:[function(require,module,exports){
++arguments[4][67][0].apply(exports,arguments)
++},{"dup":67}],173:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = makeReflectTypes
++module.exports = createGLPlot2D
+ 
+-//Construct type info for reflection.
+-//
+-// This iterates over the flattened list of uniform type values and smashes them into a JSON object.
+-//
+-// The leaves of the resulting object are either indices or type strings representing primitive glslify types
+-function makeReflectTypes(uniforms, useIndex) {
+-  var obj = {}
+-  for(var i=0; i<uniforms.length; ++i) {
+-    var n = uniforms[i].name
+-    var parts = n.split(".")
+-    var o = obj
+-    for(var j=0; j<parts.length; ++j) {
+-      var x = parts[j].split("[")
+-      if(x.length > 1) {
+-        if(!(x[0] in o)) {
+-          o[x[0]] = []
+-        }
+-        o = o[x[0]]
+-        for(var k=1; k<x.length; ++k) {
+-          var y = parseInt(x[k])
+-          if(k<x.length-1 || j<parts.length-1) {
+-            if(!(y in o)) {
+-              if(k < x.length-1) {
+-                o[y] = []
+-              } else {
+-                o[y] = {}
+-              }
+-            }
+-            o = o[y]
+-          } else {
+-            if(useIndex) {
+-              o[y] = i
+-            } else {
+-              o[y] = uniforms[i].type
+-            }
+-          }
+-        }
+-      } else if(j < parts.length-1) {
+-        if(!(x[0] in o)) {
+-          o[x[0]] = {}
+-        }
+-        o = o[x[0]]
+-      } else {
+-        if(useIndex) {
+-          o[x[0]] = i
+-        } else {
+-          o[x[0]] = uniforms[i].type
+-        }
+-      }
+-    }
+-  }
+-  return obj
++var createPick = require('gl-select-static')
++
++var createGrid = require('./lib/grid')
++var createText = require('./lib/text')
++var createLine = require('./lib/line')
++var createBox  = require('./lib/box')
++
++function GLPlot2D(gl, pickBuffer) {
++  this.gl               = gl
++  this.pickBuffer       = pickBuffer
++
++  this.screenBox        = [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight]
++  this.viewBox          = [0, 0, 0, 0]
++  this.dataBox          = [-10, -10, 10, 10]
++
++  this.gridLineEnable   = [true,true]
++  this.gridLineWidth    = [1,1]
++  this.gridLineColor    = [[0,0,0,1],
++                           [0,0,0,1]]
++
++  this.pixelRatio       = 1
++
++  this.tickMarkLength   = [0,0,0,0]
++  this.tickMarkWidth    = [0,0,0,0]
++  this.tickMarkColor    = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
++
++  this.tickPad          = [15,15,15,15]
++  this.tickAngle        = [0,0,0,0]
++  this.tickEnable       = [true,true,true,true]
++  this.tickColor        = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
++
++  this.labelPad         = [15,15,15,15]
++  this.labelAngle       = [0,Math.PI/2,0,3.0*Math.PI/2]
++  this.labelEnable      = [true,true,true,true]
++  this.labelColor       = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
++
++  this.titleCenter      = [0,0]
++  this.titleEnable      = true
++  this.titleAngle       = 0
++  this.titleColor       = [0,0,0,1]
++
++  this.borderColor      = [0,0,0,0]
++  this.backgroundColor  = [0,0,0,0]
++
++  this.zeroLineEnable   = [true, true]
++  this.zeroLineWidth    = [4, 4]
++  this.zeroLineColor    = [[0, 0, 0, 1],[0, 0, 0, 1]]
++
++  this.borderLineEnable = [true,true,true,true]
++  this.borderLineWidth  = [2,2,2,2]
++  this.borderLineColor  = [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]]
++
++  //Drawing parameters
++  this.grid             = null
++  this.text             = null
++  this.line             = null
++  this.box              = null
++  this.objects          = []
++  this.overlays         = []
++
++  this._tickBounds      = [Infinity, Infinity, -Infinity, -Infinity]
++
++  this.dirty        = false
++  this.pickDirty    = false
++  this.pickDelay    = 120
++  this.pickRadius   = 10
++  this._pickTimeout = null
++  this._drawPick    = this.drawPick.bind(this)
++
++  this._depthCounter = 0
+ }
+-},{}],208:[function(require,module,exports){
+-'use strict'
+ 
+-exports.uniforms    = runtimeUniforms
+-exports.attributes  = runtimeAttributes
++var proto = GLPlot2D.prototype
+ 
+-var GL_TO_GLSL_TYPES = {
+-  'FLOAT':       'float',
+-  'FLOAT_VEC2':  'vec2',
+-  'FLOAT_VEC3':  'vec3',
+-  'FLOAT_VEC4':  'vec4',
+-  'INT':         'int',
+-  'INT_VEC2':    'ivec2',
+-  'INT_VEC3':    'ivec3',
+-  'INT_VEC4':    'ivec4',
+-  'BOOL':        'bool',
+-  'BOOL_VEC2':   'bvec2',
+-  'BOOL_VEC3':   'bvec3',
+-  'BOOL_VEC4':   'bvec4',
+-  'FLOAT_MAT2':  'mat2',
+-  'FLOAT_MAT3':  'mat3',
+-  'FLOAT_MAT4':  'mat4',
+-  'SAMPLER_2D':  'sampler2D',
+-  'SAMPLER_CUBE':'samplerCube'
++proto.setDirty = function() {
++  this.dirty = this.pickDirty = true
+ }
+ 
+-var GL_TABLE = null
++proto.setOverlayDirty = function() {
++  this.dirty = true
++}
+ 
+-function getType(gl, type) {
+-  if(!GL_TABLE) {
+-    var typeNames = Object.keys(GL_TO_GLSL_TYPES)
+-    GL_TABLE = {}
+-    for(var i=0; i<typeNames.length; ++i) {
+-      var tn = typeNames[i]
+-      GL_TABLE[gl[tn]] = GL_TO_GLSL_TYPES[tn]
+-    }
+-  }
+-  return GL_TABLE[type]
++proto.nextDepthValue = function() {
++  return (this._depthCounter++) / 65536.0
+ }
+ 
+-function runtimeUniforms(gl, program) {
+-  var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS)
+-  var result = []
+-  for(var i=0; i<numUniforms; ++i) {
+-    var info = gl.getActiveUniform(program, i)
+-    if(info) {
+-      var type = getType(gl, info.type)
+-      if(info.size > 1) {
+-        for(var j=0; j<info.size; ++j) {
+-          result.push({
+-            name: info.name.replace('[0]', '[' + j + ']'),
+-            type: type
+-          })
+-        }
+-      } else {
+-        result.push({
+-          name: info.name,
+-          type: type
+-        })
+-      }
+-    }
+-  }
+-  return result
++function lerp(a, b, t) {
++  var s = 0.5 * (t + 1.0)
++  return Math.floor((1.0-s)*a + s*b)|0
+ }
+ 
+-function runtimeAttributes(gl, program) {
+-  var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES)
+-  var result = []
+-  for(var i=0; i<numAttributes; ++i) {
+-    var info = gl.getActiveAttrib(program, i)
+-    if(info) {
+-      result.push({
+-        name: info.name,
+-        type: getType(gl, info.type)
+-      })
++proto.draw = (function() {
++var TICK_MARK_BOX = [0,0,0,0]
++return function() {
++  var gl         = this.gl
++  var screenBox  = this.screenBox
++  var viewPixels = this.viewBox
++  var dataBox    = this.dataBox
++  var pixelRatio = this.pixelRatio
++  var grid       = this.grid
++  var line       = this.line
++  var text       = this.text
++  var objects    = this.objects
++
++  this._depthCounter = 0
++
++  if(this.pickDirty) {
++    if(this._pickTimeout) {
++      clearTimeout(this._pickTimeout)
+     }
++    this.pickDirty = false
++    this._pickTimeout = setTimeout(this._drawPick, this.pickDelay)
+   }
+-  return result
+-}
+ 
+-},{}],209:[function(require,module,exports){
+-'use strict'
++  if(!this.dirty) {
++    return
++  }
++  this.dirty = false
+ 
+-exports.shader   = getShaderReference
+-exports.program  = createProgram
++  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
+ 
+-var GLError = require("./GLError")
+-var formatCompilerError = require('gl-format-compiler-error');
++  //Turn on scissor
++  gl.enable(gl.SCISSOR_TEST)
+ 
+-var weakMap = typeof WeakMap === 'undefined' ? require('weakmap-shim') : WeakMap
+-var CACHE = new weakMap()
++  //Turn off depth buffer
++  gl.disable(gl.DEPTH_TEST)
++  gl.depthFunc(gl.LESS)
++  gl.depthMask(false)
+ 
+-var SHADER_COUNTER = 0
++  //Configure premultiplied alpha blending
++  gl.enable(gl.BLEND)
++  gl.blendEquation(gl.FUNC_ADD, gl.FUNC_ADD);
++  gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+ 
+-function ShaderReference(id, src, type, shader, programs, count, cache) {
+-  this.id       = id
+-  this.src      = src
+-  this.type     = type
+-  this.shader   = shader
+-  this.count    = count
+-  this.programs = []
+-  this.cache    = cache
+-}
++  //Draw border
++  gl.scissor(
++    screenBox[0],
++    screenBox[1],
++    screenBox[2]-screenBox[0],
++    screenBox[3]-screenBox[1])
++  var borderColor = this.borderColor
++  gl.clearColor(
++    borderColor[0]*borderColor[3],
++    borderColor[1]*borderColor[3],
++    borderColor[2]*borderColor[3],
++    borderColor[3])
++  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+ 
+-ShaderReference.prototype.dispose = function() {
+-  if(--this.count === 0) {
+-    var cache    = this.cache
+-    var gl       = cache.gl
++  //Draw center pane
++  gl.scissor(
++    viewPixels[0],
++    viewPixels[1],
++    viewPixels[2]-viewPixels[0],
++    viewPixels[3]-viewPixels[1])
++  gl.viewport(
++    viewPixels[0],
++    viewPixels[1],
++    viewPixels[2]-viewPixels[0],
++    viewPixels[3]-viewPixels[1])
++  var backgroundColor = this.backgroundColor
++  gl.clearColor(
++    backgroundColor[0]*backgroundColor[3],
++    backgroundColor[1]*backgroundColor[3],
++    backgroundColor[2]*backgroundColor[3],
++    backgroundColor[3])
++  gl.clear(gl.COLOR_BUFFER_BIT)
+ 
+-    //Remove program references
+-    var programs = this.programs
+-    for(var i=0, n=programs.length; i<n; ++i) {
+-      var p = cache.programs[programs[i]]
+-      if(p) {
+-        delete cache.programs[i]
+-        gl.deleteProgram(p)
++  //Draw grid
++  grid.draw()
++
++  //Draw zero lines separately
++  var zeroLineEnable = this.zeroLineEnable
++  var zeroLineColor  = this.zeroLineColor
++  var zeroLineWidth  = this.zeroLineWidth
++  if(zeroLineEnable[0] || zeroLineEnable[1]) {
++    line.bind()
++    for(var i=0; i<2; ++i) {
++      if(!zeroLineEnable[i] ||
++        !(dataBox[i] <= 0 && dataBox[i+2] >= 0)) {
++        continue
++      }
++
++      var zeroIntercept = screenBox[i] -
++        dataBox[i] * (screenBox[i+2] - screenBox[i]) / (dataBox[i+2] - dataBox[i])
++
++      if(i === 0) {
++        line.drawLine(
++          zeroIntercept, screenBox[1], zeroIntercept, screenBox[3],
++          zeroLineWidth[i],
++          zeroLineColor[i])
++      } else {
++        line.drawLine(
++          screenBox[0], zeroIntercept, screenBox[2], zeroIntercept,
++          zeroLineWidth[i],
++          zeroLineColor[i])
+       }
+     }
++  }
+ 
+-    //Remove shader reference
+-    gl.deleteShader(this.shader)
+-    delete cache.shaders[(this.type === gl.FRAGMENT_SHADER)|0][this.src]
++  //Draw traces
++  for(var i=0; i<objects.length; ++i) {
++    objects[i].draw()
+   }
+-}
+ 
+-function ContextCache(gl) {
+-  this.gl       = gl
+-  this.shaders  = [{}, {}]
+-  this.programs = {}
+-}
++  //Return viewport to default
++  gl.viewport(
++    screenBox[0],
++    screenBox[1],
++    screenBox[2]-screenBox[0],
++    screenBox[3]-screenBox[1])
++  gl.scissor(
++    screenBox[0],
++    screenBox[1],
++    screenBox[2]-screenBox[0],
++    screenBox[3]-screenBox[1])
+ 
+-var proto = ContextCache.prototype
++  //Draw tick marks
++  this.grid.drawTickMarks()
+ 
+-function compileShader(gl, type, src) {
+-  var shader = gl.createShader(type)
+-  gl.shaderSource(shader, src)
+-  gl.compileShader(shader)
+-  if(!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
+-    var errLog = gl.getShaderInfoLog(shader)
+-    try {
+-        var fmt = formatCompilerError(errLog, src, type);
+-    } catch (e){
+-        console.warn('Failed to format compiler error: ' + e);
+-        throw new GLError(errLog, 'Error compiling shader:\n' + errLog)
+-    }
+-    throw new GLError(errLog, fmt.short, fmt.long)
+-  }
+-  return shader
+-}
++  //Draw line elements
++  line.bind()
+ 
+-proto.getShaderReference = function(type, src) {
+-  var gl      = this.gl
+-  var shaders = this.shaders[(type === gl.FRAGMENT_SHADER)|0]
+-  var shader  = shaders[src]
+-  if(!shader || !gl.isShader(shader.shader)) {
+-    var shaderObj = compileShader(gl, type, src)
+-    shader = shaders[src] = new ShaderReference(
+-      SHADER_COUNTER++,
+-      src,
+-      type,
+-      shaderObj,
+-      [],
+-      1,
+-      this)
+-  } else {
+-    shader.count += 1
++  //Draw border lines
++  var borderLineEnable = this.borderLineEnable
++  var borderLineWidth  = this.borderLineWidth
++  var borderLineColor  = this.borderLineColor
++  if(borderLineEnable[1]) {
++    line.drawLine(
++      viewPixels[0], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
++      viewPixels[0], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
++      borderLineWidth[1], borderLineColor[1])
++  }
++  if(borderLineEnable[0]) {
++    line.drawLine(
++      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[1],
++      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[1],
++      borderLineWidth[0], borderLineColor[0])
++  }
++  if(borderLineEnable[3]) {
++    line.drawLine(
++      viewPixels[2], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
++      viewPixels[2], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
++      borderLineWidth[3], borderLineColor[3])
++  }
++  if(borderLineEnable[2]) {
++    line.drawLine(
++      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[3],
++      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[3],
++      borderLineWidth[2], borderLineColor[2])
+   }
+-  return shader
+-}
+ 
+-function linkProgram(gl, vshader, fshader, attribs, locations) {
+-  var program = gl.createProgram()
+-  gl.attachShader(program, vshader)
+-  gl.attachShader(program, fshader)
+-  for(var i=0; i<attribs.length; ++i) {
+-    gl.bindAttribLocation(program, locations[i], attribs[i])
++  //Draw text elements
++  text.bind()
++  for(var i=0; i<2; ++i) {
++    text.drawTicks(i)
+   }
+-  gl.linkProgram(program)
+-  if(!gl.getProgramParameter(program, gl.LINK_STATUS)) {
+-    var errLog = gl.getProgramInfoLog(program)
+-    throw new GLError(errLog, 'Error linking program: ' + errLog)
++  if(this.titleEnable) {
++    text.drawTitle()
+   }
+-  return program
+-}
+ 
+-proto.getProgram = function(vref, fref, attribs, locations) {
+-  var token = [vref.id, fref.id, attribs.join(':'), locations.join(':')].join('@')
+-  var prog  = this.programs[token]
+-  if(!prog || !this.gl.isProgram(prog)) {
+-    this.programs[token] = prog = linkProgram(
+-      this.gl,
+-      vref.shader,
+-      fref.shader,
+-      attribs,
+-      locations)
+-    vref.programs.push(token)
+-    fref.programs.push(token)
++  //Draw other overlay elements (select boxes, etc.)
++  var overlays = this.overlays
++  for(var i=0; i<overlays.length; ++i) {
++    overlays[i].draw()
+   }
+-  return prog
+-}
+ 
+-function getCache(gl) {
+-  var ctxCache = CACHE.get(gl)
+-  if(!ctxCache) {
+-    ctxCache = new ContextCache(gl)
+-    CACHE.set(gl, ctxCache)
+-  }
+-  return ctxCache
++  //Turn off scissor test
++  gl.disable(gl.SCISSOR_TEST)
++  gl.disable(gl.BLEND)
++  gl.depthMask(true)
+ }
++})()
+ 
+-function getShaderReference(gl, type, src) {
+-  return getCache(gl).getShaderReference(type, src)
+-}
++proto.drawPick = (function() {
+ 
+-function createProgram(gl, vref, fref, attribs, locations) {
+-  return getCache(gl).getProgram(vref, fref, attribs, locations)
+-}
++return function() {
++  var pickBuffer = this.pickBuffer
++  var gl = this.gl
+ 
+-},{"./GLError":204,"gl-format-compiler-error":210,"weakmap-shim":220}],210:[function(require,module,exports){
++  this._pickTimeout = null
++  pickBuffer.begin()
+ 
+-var sprintf = require('sprintf-js').sprintf;
+-var glConstants = require('gl-constants/lookup');
+-var shaderName = require('glsl-shader-name');
+-var addLineNumbers = require('add-line-numbers');
++  var pickOffset = 1
++  var objects = this.objects
++  for(var i=0; i<objects.length; ++i) {
++    pickOffset = objects[i].drawPick(pickOffset)
++  }
+ 
+-module.exports = formatCompilerError;
++  pickBuffer.end()
++}
++})()
+ 
+-function formatCompilerError(errLog, src, type) {
+-    "use strict";
++proto.pick = (function() {
++return function(x, y) {
++  var pixelRatio     = this.pixelRatio
++  var pickPixelRatio = this.pickPixelRatio
++  var viewBox        = this.viewBox
+ 
+-    var name = shaderName(src) || 'of unknown name (see npm glsl-shader-name)';
++  var scrX = Math.round((x - viewBox[0] / pixelRatio) * pickPixelRatio)|0
++  var scrY = Math.round((y - viewBox[1] / pixelRatio) * pickPixelRatio)|0
+ 
+-    var typeName = 'unknown type';
+-    if (type !== undefined) {
+-        typeName = type === glConstants.FRAGMENT_SHADER ? 'fragment' : 'vertex'
++  var pickResult = this.pickBuffer.query(scrX, scrY, this.pickRadius)
++  if(!pickResult) {
++    return null
++  }
++
++  var pickValue = pickResult.id +
++    (pickResult.value[0]<<8)  +
++    (pickResult.value[1]<<16) +
++    (pickResult.value[2]<<24)
++
++  var objects = this.objects
++  for(var i=0; i<objects.length; ++i) {
++    var result = objects[i].pick(scrX, scrY, pickValue)
++    if(result) {
++      return result
+     }
++  }
+ 
+-    var longForm = sprintf('Error compiling %s shader %s:\n', typeName, name);
+-    var shortForm = sprintf("%s%s", longForm, errLog);
++  return null
++}
++})()
+ 
+-    var errorStrings = errLog.split('\n');
+-    var errors = {};
++function deepClone(array) {
++  var result = array.slice()
++  for(var i=0; i<result.length; ++i) {
++    result[i] = result[i].slice()
++  }
++  return result
++}
+ 
+-    for (var i = 0; i < errorStrings.length; i++) {
+-        var errorString = errorStrings[i];
+-        if (errorString === '') continue;
+-        var lineNo = parseInt(errorString.split(':')[2]);
+-        if (isNaN(lineNo)) {
+-            throw new Error(sprintf('Could not parse error: %s', errorString));
+-        }
+-        errors[lineNo] = errorString;
+-    }
++function compareTicks(a, b) {
++  return a.x - b.x
++}
+ 
+-    var lines = addLineNumbers(src).split('\n');
++proto.setScreenBox = function(nbox) {
++  var screenBox = this.screenBox
++  var pixelRatio = this.pixelRatio
+ 
+-    for (var i = 0; i < lines.length; i++) {
+-        if (!errors[i+3] && !errors[i+2] && !errors[i+1]) continue;
+-        var line = lines[i];
+-        longForm += line + '\n';
+-        if (errors[i+1]) {
+-            var e = errors[i+1];
+-            e = e.substr(e.split(':', 3).join(':').length + 1).trim();
+-            longForm += sprintf('^^^ %s\n\n', e);
+-        }
+-    }
++  screenBox[0] = Math.round(nbox[0] * pixelRatio) | 0
++  screenBox[1] = Math.round(nbox[1] * pixelRatio) | 0
++  screenBox[2] = Math.round(nbox[2] * pixelRatio) | 0
++  screenBox[3] = Math.round(nbox[3] * pixelRatio) | 0
+ 
+-    return {
+-        long: longForm.trim(),
+-        short: shortForm.trim()
+-    };
++  this.setDirty()
+ }
+ 
++proto.setDataBox = function(nbox) {
++  var dataBox = this.dataBox
+ 
+-},{"add-line-numbers":211,"gl-constants/lookup":214,"glsl-shader-name":215,"sprintf-js":217}],211:[function(require,module,exports){
+-var padLeft = require('pad-left')
++  var different =
++    dataBox[0] !== nbox[0] ||
++    dataBox[1] !== nbox[1] ||
++    dataBox[2] !== nbox[2] ||
++    dataBox[3] !== nbox[3]
+ 
+-module.exports = addLineNumbers
+-function addLineNumbers (string, start, delim) {
+-  start = typeof start === 'number' ? start : 1
+-  delim = delim || ': '
++  if(different) {
++    dataBox[0] = nbox[0]
++    dataBox[1] = nbox[1]
++    dataBox[2] = nbox[2]
++    dataBox[3] = nbox[3]
+ 
+-  var lines = string.split(/\r?\n/)
+-  var totalDigits = String(lines.length + start - 1).length
+-  return lines.map(function (line, i) {
+-    var c = i + start
+-    var digits = String(c).length
+-    var prefix = padLeft(c, totalDigits - digits)
+-    return prefix + delim + line
+-  }).join('\n')
++    this.setDirty()
++  }
+ }
+ 
+-},{"pad-left":212}],212:[function(require,module,exports){
+-/*!
+- * pad-left <https://github.com/jonschlinkert/pad-left>
+- *
+- * Copyright (c) 2014-2015, Jon Schlinkert.
+- * Licensed under the MIT license.
+- */
++proto.setViewBox = function(nbox) {
++  var pixelRatio = this.pixelRatio
++  var viewBox = this.viewBox
+ 
+-'use strict';
++  viewBox[0] = Math.round(nbox[0] * pixelRatio)|0
++  viewBox[1] = Math.round(nbox[1] * pixelRatio)|0
++  viewBox[2] = Math.round(nbox[2] * pixelRatio)|0
++  viewBox[3] = Math.round(nbox[3] * pixelRatio)|0
+ 
+-var repeat = require('repeat-string');
++  var pickPixelRatio = this.pickPixelRatio
++  this.pickBuffer.shape = [
++    Math.round((nbox[2] - nbox[0]) * pickPixelRatio)|0,
++    Math.round((nbox[3] - nbox[1]) * pickPixelRatio)|0 ]
+ 
+-module.exports = function padLeft(str, num, ch) {
+-  ch = typeof ch !== 'undefined' ? (ch + '') : ' ';
+-  return repeat(ch, num) + str;
+-};
+-},{"repeat-string":434}],213:[function(require,module,exports){
+-module.exports = {
+-  0: 'NONE',
+-  1: 'ONE',
+-  2: 'LINE_LOOP',
+-  3: 'LINE_STRIP',
+-  4: 'TRIANGLES',
+-  5: 'TRIANGLE_STRIP',
+-  6: 'TRIANGLE_FAN',
+-  256: 'DEPTH_BUFFER_BIT',
+-  512: 'NEVER',
+-  513: 'LESS',
+-  514: 'EQUAL',
+-  515: 'LEQUAL',
+-  516: 'GREATER',
+-  517: 'NOTEQUAL',
+-  518: 'GEQUAL',
+-  519: 'ALWAYS',
+-  768: 'SRC_COLOR',
+-  769: 'ONE_MINUS_SRC_COLOR',
+-  770: 'SRC_ALPHA',
+-  771: 'ONE_MINUS_SRC_ALPHA',
+-  772: 'DST_ALPHA',
+-  773: 'ONE_MINUS_DST_ALPHA',
+-  774: 'DST_COLOR',
+-  775: 'ONE_MINUS_DST_COLOR',
+-  776: 'SRC_ALPHA_SATURATE',
+-  1024: 'STENCIL_BUFFER_BIT',
+-  1028: 'FRONT',
+-  1029: 'BACK',
+-  1032: 'FRONT_AND_BACK',
+-  1280: 'INVALID_ENUM',
+-  1281: 'INVALID_VALUE',
+-  1282: 'INVALID_OPERATION',
+-  1285: 'OUT_OF_MEMORY',
+-  1286: 'INVALID_FRAMEBUFFER_OPERATION',
+-  2304: 'CW',
+-  2305: 'CCW',
+-  2849: 'LINE_WIDTH',
+-  2884: 'CULL_FACE',
+-  2885: 'CULL_FACE_MODE',
+-  2886: 'FRONT_FACE',
+-  2928: 'DEPTH_RANGE',
+-  2929: 'DEPTH_TEST',
+-  2930: 'DEPTH_WRITEMASK',
+-  2931: 'DEPTH_CLEAR_VALUE',
+-  2932: 'DEPTH_FUNC',
+-  2960: 'STENCIL_TEST',
+-  2961: 'STENCIL_CLEAR_VALUE',
+-  2962: 'STENCIL_FUNC',
+-  2963: 'STENCIL_VALUE_MASK',
+-  2964: 'STENCIL_FAIL',
+-  2965: 'STENCIL_PASS_DEPTH_FAIL',
+-  2966: 'STENCIL_PASS_DEPTH_PASS',
+-  2967: 'STENCIL_REF',
+-  2968: 'STENCIL_WRITEMASK',
+-  2978: 'VIEWPORT',
+-  3024: 'DITHER',
+-  3042: 'BLEND',
+-  3088: 'SCISSOR_BOX',
+-  3089: 'SCISSOR_TEST',
+-  3106: 'COLOR_CLEAR_VALUE',
+-  3107: 'COLOR_WRITEMASK',
+-  3317: 'UNPACK_ALIGNMENT',
+-  3333: 'PACK_ALIGNMENT',
+-  3379: 'MAX_TEXTURE_SIZE',
+-  3386: 'MAX_VIEWPORT_DIMS',
+-  3408: 'SUBPIXEL_BITS',
+-  3410: 'RED_BITS',
+-  3411: 'GREEN_BITS',
+-  3412: 'BLUE_BITS',
+-  3413: 'ALPHA_BITS',
+-  3414: 'DEPTH_BITS',
+-  3415: 'STENCIL_BITS',
+-  3553: 'TEXTURE_2D',
+-  4352: 'DONT_CARE',
+-  4353: 'FASTEST',
+-  4354: 'NICEST',
+-  5120: 'BYTE',
+-  5121: 'UNSIGNED_BYTE',
+-  5122: 'SHORT',
+-  5123: 'UNSIGNED_SHORT',
+-  5124: 'INT',
+-  5125: 'UNSIGNED_INT',
+-  5126: 'FLOAT',
+-  5386: 'INVERT',
+-  5890: 'TEXTURE',
+-  6401: 'STENCIL_INDEX',
+-  6402: 'DEPTH_COMPONENT',
+-  6406: 'ALPHA',
+-  6407: 'RGB',
+-  6408: 'RGBA',
+-  6409: 'LUMINANCE',
+-  6410: 'LUMINANCE_ALPHA',
+-  7680: 'KEEP',
+-  7681: 'REPLACE',
+-  7682: 'INCR',
+-  7683: 'DECR',
+-  7936: 'VENDOR',
+-  7937: 'RENDERER',
+-  7938: 'VERSION',
+-  9728: 'NEAREST',
+-  9729: 'LINEAR',
+-  9984: 'NEAREST_MIPMAP_NEAREST',
+-  9985: 'LINEAR_MIPMAP_NEAREST',
+-  9986: 'NEAREST_MIPMAP_LINEAR',
+-  9987: 'LINEAR_MIPMAP_LINEAR',
+-  10240: 'TEXTURE_MAG_FILTER',
+-  10241: 'TEXTURE_MIN_FILTER',
+-  10242: 'TEXTURE_WRAP_S',
+-  10243: 'TEXTURE_WRAP_T',
+-  10497: 'REPEAT',
+-  10752: 'POLYGON_OFFSET_UNITS',
+-  16384: 'COLOR_BUFFER_BIT',
+-  32769: 'CONSTANT_COLOR',
+-  32770: 'ONE_MINUS_CONSTANT_COLOR',
+-  32771: 'CONSTANT_ALPHA',
+-  32772: 'ONE_MINUS_CONSTANT_ALPHA',
+-  32773: 'BLEND_COLOR',
+-  32774: 'FUNC_ADD',
+-  32777: 'BLEND_EQUATION_RGB',
+-  32778: 'FUNC_SUBTRACT',
+-  32779: 'FUNC_REVERSE_SUBTRACT',
+-  32819: 'UNSIGNED_SHORT_4_4_4_4',
+-  32820: 'UNSIGNED_SHORT_5_5_5_1',
+-  32823: 'POLYGON_OFFSET_FILL',
+-  32824: 'POLYGON_OFFSET_FACTOR',
+-  32854: 'RGBA4',
+-  32855: 'RGB5_A1',
+-  32873: 'TEXTURE_BINDING_2D',
+-  32926: 'SAMPLE_ALPHA_TO_COVERAGE',
+-  32928: 'SAMPLE_COVERAGE',
+-  32936: 'SAMPLE_BUFFERS',
+-  32937: 'SAMPLES',
+-  32938: 'SAMPLE_COVERAGE_VALUE',
+-  32939: 'SAMPLE_COVERAGE_INVERT',
+-  32968: 'BLEND_DST_RGB',
+-  32969: 'BLEND_SRC_RGB',
+-  32970: 'BLEND_DST_ALPHA',
+-  32971: 'BLEND_SRC_ALPHA',
+-  33071: 'CLAMP_TO_EDGE',
+-  33170: 'GENERATE_MIPMAP_HINT',
+-  33189: 'DEPTH_COMPONENT16',
+-  33306: 'DEPTH_STENCIL_ATTACHMENT',
+-  33635: 'UNSIGNED_SHORT_5_6_5',
+-  33648: 'MIRRORED_REPEAT',
+-  33901: 'ALIASED_POINT_SIZE_RANGE',
+-  33902: 'ALIASED_LINE_WIDTH_RANGE',
+-  33984: 'TEXTURE0',
+-  33985: 'TEXTURE1',
+-  33986: 'TEXTURE2',
+-  33987: 'TEXTURE3',
+-  33988: 'TEXTURE4',
+-  33989: 'TEXTURE5',
+-  33990: 'TEXTURE6',
+-  33991: 'TEXTURE7',
+-  33992: 'TEXTURE8',
+-  33993: 'TEXTURE9',
+-  33994: 'TEXTURE10',
+-  33995: 'TEXTURE11',
+-  33996: 'TEXTURE12',
+-  33997: 'TEXTURE13',
+-  33998: 'TEXTURE14',
+-  33999: 'TEXTURE15',
+-  34000: 'TEXTURE16',
+-  34001: 'TEXTURE17',
+-  34002: 'TEXTURE18',
+-  34003: 'TEXTURE19',
+-  34004: 'TEXTURE20',
+-  34005: 'TEXTURE21',
+-  34006: 'TEXTURE22',
+-  34007: 'TEXTURE23',
+-  34008: 'TEXTURE24',
+-  34009: 'TEXTURE25',
+-  34010: 'TEXTURE26',
+-  34011: 'TEXTURE27',
+-  34012: 'TEXTURE28',
+-  34013: 'TEXTURE29',
+-  34014: 'TEXTURE30',
+-  34015: 'TEXTURE31',
+-  34016: 'ACTIVE_TEXTURE',
+-  34024: 'MAX_RENDERBUFFER_SIZE',
+-  34041: 'DEPTH_STENCIL',
+-  34055: 'INCR_WRAP',
+-  34056: 'DECR_WRAP',
+-  34067: 'TEXTURE_CUBE_MAP',
+-  34068: 'TEXTURE_BINDING_CUBE_MAP',
+-  34069: 'TEXTURE_CUBE_MAP_POSITIVE_X',
+-  34070: 'TEXTURE_CUBE_MAP_NEGATIVE_X',
+-  34071: 'TEXTURE_CUBE_MAP_POSITIVE_Y',
+-  34072: 'TEXTURE_CUBE_MAP_NEGATIVE_Y',
+-  34073: 'TEXTURE_CUBE_MAP_POSITIVE_Z',
+-  34074: 'TEXTURE_CUBE_MAP_NEGATIVE_Z',
+-  34076: 'MAX_CUBE_MAP_TEXTURE_SIZE',
+-  34338: 'VERTEX_ATTRIB_ARRAY_ENABLED',
+-  34339: 'VERTEX_ATTRIB_ARRAY_SIZE',
+-  34340: 'VERTEX_ATTRIB_ARRAY_STRIDE',
+-  34341: 'VERTEX_ATTRIB_ARRAY_TYPE',
+-  34342: 'CURRENT_VERTEX_ATTRIB',
+-  34373: 'VERTEX_ATTRIB_ARRAY_POINTER',
+-  34466: 'NUM_COMPRESSED_TEXTURE_FORMATS',
+-  34467: 'COMPRESSED_TEXTURE_FORMATS',
+-  34660: 'BUFFER_SIZE',
+-  34661: 'BUFFER_USAGE',
+-  34816: 'STENCIL_BACK_FUNC',
+-  34817: 'STENCIL_BACK_FAIL',
+-  34818: 'STENCIL_BACK_PASS_DEPTH_FAIL',
+-  34819: 'STENCIL_BACK_PASS_DEPTH_PASS',
+-  34877: 'BLEND_EQUATION_ALPHA',
+-  34921: 'MAX_VERTEX_ATTRIBS',
+-  34922: 'VERTEX_ATTRIB_ARRAY_NORMALIZED',
+-  34930: 'MAX_TEXTURE_IMAGE_UNITS',
+-  34962: 'ARRAY_BUFFER',
+-  34963: 'ELEMENT_ARRAY_BUFFER',
+-  34964: 'ARRAY_BUFFER_BINDING',
+-  34965: 'ELEMENT_ARRAY_BUFFER_BINDING',
+-  34975: 'VERTEX_ATTRIB_ARRAY_BUFFER_BINDING',
+-  35040: 'STREAM_DRAW',
+-  35044: 'STATIC_DRAW',
+-  35048: 'DYNAMIC_DRAW',
+-  35632: 'FRAGMENT_SHADER',
+-  35633: 'VERTEX_SHADER',
+-  35660: 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
+-  35661: 'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
+-  35663: 'SHADER_TYPE',
+-  35664: 'FLOAT_VEC2',
+-  35665: 'FLOAT_VEC3',
+-  35666: 'FLOAT_VEC4',
+-  35667: 'INT_VEC2',
+-  35668: 'INT_VEC3',
+-  35669: 'INT_VEC4',
+-  35670: 'BOOL',
+-  35671: 'BOOL_VEC2',
+-  35672: 'BOOL_VEC3',
+-  35673: 'BOOL_VEC4',
+-  35674: 'FLOAT_MAT2',
+-  35675: 'FLOAT_MAT3',
+-  35676: 'FLOAT_MAT4',
+-  35678: 'SAMPLER_2D',
+-  35680: 'SAMPLER_CUBE',
+-  35712: 'DELETE_STATUS',
+-  35713: 'COMPILE_STATUS',
+-  35714: 'LINK_STATUS',
+-  35715: 'VALIDATE_STATUS',
+-  35716: 'INFO_LOG_LENGTH',
+-  35717: 'ATTACHED_SHADERS',
+-  35718: 'ACTIVE_UNIFORMS',
+-  35719: 'ACTIVE_UNIFORM_MAX_LENGTH',
+-  35720: 'SHADER_SOURCE_LENGTH',
+-  35721: 'ACTIVE_ATTRIBUTES',
+-  35722: 'ACTIVE_ATTRIBUTE_MAX_LENGTH',
+-  35724: 'SHADING_LANGUAGE_VERSION',
+-  35725: 'CURRENT_PROGRAM',
+-  36003: 'STENCIL_BACK_REF',
+-  36004: 'STENCIL_BACK_VALUE_MASK',
+-  36005: 'STENCIL_BACK_WRITEMASK',
+-  36006: 'FRAMEBUFFER_BINDING',
+-  36007: 'RENDERBUFFER_BINDING',
+-  36048: 'FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE',
+-  36049: 'FRAMEBUFFER_ATTACHMENT_OBJECT_NAME',
+-  36050: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL',
+-  36051: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
+-  36053: 'FRAMEBUFFER_COMPLETE',
+-  36054: 'FRAMEBUFFER_INCOMPLETE_ATTACHMENT',
+-  36055: 'FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT',
+-  36057: 'FRAMEBUFFER_INCOMPLETE_DIMENSIONS',
+-  36061: 'FRAMEBUFFER_UNSUPPORTED',
+-  36064: 'COLOR_ATTACHMENT0',
+-  36096: 'DEPTH_ATTACHMENT',
+-  36128: 'STENCIL_ATTACHMENT',
+-  36160: 'FRAMEBUFFER',
+-  36161: 'RENDERBUFFER',
+-  36162: 'RENDERBUFFER_WIDTH',
+-  36163: 'RENDERBUFFER_HEIGHT',
+-  36164: 'RENDERBUFFER_INTERNAL_FORMAT',
+-  36168: 'STENCIL_INDEX8',
+-  36176: 'RENDERBUFFER_RED_SIZE',
+-  36177: 'RENDERBUFFER_GREEN_SIZE',
+-  36178: 'RENDERBUFFER_BLUE_SIZE',
+-  36179: 'RENDERBUFFER_ALPHA_SIZE',
+-  36180: 'RENDERBUFFER_DEPTH_SIZE',
+-  36181: 'RENDERBUFFER_STENCIL_SIZE',
+-  36194: 'RGB565',
+-  36336: 'LOW_FLOAT',
+-  36337: 'MEDIUM_FLOAT',
+-  36338: 'HIGH_FLOAT',
+-  36339: 'LOW_INT',
+-  36340: 'MEDIUM_INT',
+-  36341: 'HIGH_INT',
+-  36346: 'SHADER_COMPILER',
+-  36347: 'MAX_VERTEX_UNIFORM_VECTORS',
+-  36348: 'MAX_VARYING_VECTORS',
+-  36349: 'MAX_FRAGMENT_UNIFORM_VECTORS',
+-  37440: 'UNPACK_FLIP_Y_WEBGL',
+-  37441: 'UNPACK_PREMULTIPLY_ALPHA_WEBGL',
+-  37442: 'CONTEXT_LOST_WEBGL',
+-  37443: 'UNPACK_COLORSPACE_CONVERSION_WEBGL',
+-  37444: 'BROWSER_DEFAULT_WEBGL'
++  this.setDirty()
+ }
+ 
+-},{}],214:[function(require,module,exports){
+-var gl10 = require('./1.0/numbers')
++proto.update = function(options) {
++  options = options || {}
++
++  var gl = this.gl
+ 
+-module.exports = function lookupConstant (number) {
+-  return gl10[number]
++  this.pixelRatio      = options.pixelRatio || 1
++
++  var pixelRatio       = this.pixelRatio
++  this.pickPixelRatio  = Math.max(pixelRatio, 1)
++
++  this.setScreenBox(options.screenBox ||
++    [0, 0, gl.drawingBufferWidth/pixelRatio, gl.drawingBufferHeight/pixelRatio])
++
++  var screenBox = this.screenBox
++  this.setViewBox(options.viewBox ||
++    [0.125*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
++     0.125*(this.screenBox[3]-this.screenBox[1])/pixelRatio,
++     0.875*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
++     0.875*(this.screenBox[3]-this.screenBox[1])/pixelRatio])
++
++  var viewBox = this.viewBox
++  var aspectRatio = (viewBox[2] - viewBox[0]) / (viewBox[3] - viewBox[1])
++  this.setDataBox(options.dataBox || [-10, -10/aspectRatio, 10, 10/aspectRatio])
++
++  this.borderColor     = (options.borderColor     || [0,0,0,0]).slice()
++  this.backgroundColor = (options.backgroundColor || [0,0,0,0]).slice()
++
++  this.gridLineEnable  = (options.gridLineEnable || [true,true]).slice()
++  this.gridLineWidth   = (options.gridLineWidth || [1,1]).slice()
++  this.gridLineColor   = deepClone(options.gridLineColor ||
++    [[0.5,0.5,0.5,1],[0.5,0.5,0.5,1]])
++
++  this.zeroLineEnable   = (options.zeroLineEnable || [true, true]).slice()
++  this.zeroLineWidth    = (options.zeroLineWidth || [4, 4]).slice()
++  this.zeroLineColor    = deepClone(options.zeroLineColor ||
++    [[0, 0, 0, 1],[0, 0, 0, 1]])
++
++  this.tickMarkLength   = (options.tickMarkLength || [0,0,0,0]).slice()
++  this.tickMarkWidth    = (options.tickMarkWidth || [0,0,0,0]).slice()
++  this.tickMarkColor    = deepClone(options.tickMarkColor ||
++    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++
++  this.titleCenter      = (options.titleCenter || [
++    0.5*(viewBox[0]+viewBox[2])/pixelRatio,(viewBox[3]+120)/pixelRatio]).slice()
++  this.titleEnable      = !('titleEnable' in options) || !!options.titleEnable
++  this.titleAngle       = options.titleAngle || 0
++  this.titleColor       = (options.titleColor || [0,0,0,1]).slice()
++
++  this.labelPad         = (options.labelPad || [15,15,15,15]).slice()
++  this.labelAngle       = (options.labelAngle ||
++    [0,Math.PI/2,0,3.0*Math.PI/2]).slice()
++  this.labelEnable      = (options.labelEnable || [true,true,true,true]).slice()
++  this.labelColor       = deepClone(options.labelColor ||
++    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++
++  this.tickPad         = (options.tickPad || [15,15,15,15]).slice()
++  this.tickAngle       = (options.tickAngle || [0,0,0,0]).slice()
++  this.tickEnable      = (options.tickEnable || [true,true,true,true]).slice()
++  this.tickColor       = deepClone(options.tickColor ||
++    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])
++
++  this.borderLineEnable = (options.borderLineEnable ||
++                            [true,true,true,true]).slice()
++  this.borderLineWidth  = (options.borderLineWidth || [2,2,2,2]).slice()
++  this.borderLineColor  = deepClone(options.borderLineColor ||
++                          [[0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1],
++                           [0,0,0,1]])
++
++  var ticks = options.ticks || [ [], [] ]
++
++  //Compute bounds on ticks
++  var bounds = this._tickBounds
++  bounds[0] = bounds[1] =  Infinity
++  bounds[2] = bounds[3] = -Infinity
++  for(var i=0; i<2; ++i) {
++    var axisTicks = ticks[i].slice(0)
++    if(axisTicks.length === 0) {
++      continue
++    }
++    axisTicks.sort(compareTicks)
++    bounds[i]   = Math.min(bounds[i], axisTicks[0].x)
++    bounds[i+2] = Math.max(bounds[i+2], axisTicks[axisTicks.length-1].x)
++  }
++
++  //Update grid
++  this.grid.update({
++    bounds: bounds,
++    ticks:  ticks
++  })
++
++  //Update text
++  this.text.update({
++    bounds:     bounds,
++    ticks:      ticks,
++    labels:     options.labels    || ['x', 'y'],
++    labelSize:  options.labelSize || [12,12],
++    labelFont:  options.labelFont || ['sans-serif', 'sans-serif'],
++    title:      options.title     || '',
++    titleSize:  options.titleSize || 18,
++    titleFont:  options.titleFont || 'sans-serif'
++  })
++
++  this.setDirty()
+ }
+ 
+-},{"./1.0/numbers":213}],215:[function(require,module,exports){
+-var tokenize = require('glsl-tokenizer')
+-var atob     = require('atob-lite')
++proto.dispose = function() {
++  this.box.dispose()
++  this.grid.dispose()
++  this.text.dispose()
++  this.line.dispose()
++  for(var i=this.objects.length-1; i>=0; --i) {
++    this.objects[i].dispose()
++  }
++  this.objects.length = 0
++  for(var i=this.overlays.length-1; i>=0; --i) {
++    this.overlays[i].dispose()
++  }
++  this.overlays.length = 0
+ 
+-module.exports = getName
++  this.gl = null
++}
+ 
+-function getName(src) {
+-  var tokens = Array.isArray(src)
+-    ? src
+-    : tokenize(src)
++proto.addObject = function(object) {
++  if(this.objects.indexOf(object) < 0) {
++    this.objects.push(object)
++    this.setDirty()
++  }
++}
+ 
+-  for (var i = 0; i < tokens.length; i++) {
+-    var token = tokens[i]
+-    if (token.type !== 'preprocessor') continue
+-    var match = token.data.match(/\#define\s+SHADER_NAME(_B64)?\s+(.+)$/)
+-    if (!match) continue
+-    if (!match[2]) continue
++proto.removeObject = function(object) {
++  var objects = this.objects
++  for(var i=0; i<objects.length; ++i) {
++    if(objects[i] === object) {
++      objects.splice(i,1)
++      this.setDirty()
++      break
++    }
++  }
++}
+ 
+-    var b64  = match[1]
+-    var name = match[2]
++proto.addOverlay = function(object) {
++  if(this.overlays.indexOf(object) < 0) {
++    this.overlays.push(object)
++    this.setOverlayDirty()
++  }
++}
+ 
+-    return (b64 ? atob(name) : name).trim()
++proto.removeOverlay = function(object) {
++  var objects = this.overlays
++  for(var i=0; i<objects.length; ++i) {
++    if(objects[i] === object) {
++      objects.splice(i,1)
++      this.setOverlayDirty()
++      break
++    }
+   }
+ }
+ 
+-},{"atob-lite":216,"glsl-tokenizer":240}],216:[function(require,module,exports){
+-module.exports = function _atob(str) {
+-  return atob(str)
++function createGLPlot2D(options) {
++  var gl = options.gl
++  var pickBuffer = createPick(gl, [
++    gl.drawingBufferWidth, gl.drawingBufferHeight])
++  var plot = new GLPlot2D(gl, pickBuffer)
++  plot.grid = createGrid(plot)
++  plot.text = createText(plot)
++  plot.line = createLine(plot)
++  plot.box  = createBox(plot)
++  plot.update(options)
++  return plot
+ }
+ 
+-},{}],217:[function(require,module,exports){
+-(function(window) {
+-    var re = {
+-        not_string: /[^s]/,
+-        number: /[diefg]/,
+-        json: /[j]/,
+-        not_json: /[^j]/,
+-        text: /^[^\x25]+/,
+-        modulo: /^\x25{2}/,
+-        placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijosuxX])/,
+-        key: /^([a-z_][a-z_\d]*)/i,
+-        key_access: /^\.([a-z_][a-z_\d]*)/i,
+-        index_access: /^\[(\d+)\]/,
+-        sign: /^[\+\-]/
++},{"./lib/box":167,"./lib/grid":168,"./lib/line":169,"./lib/text":171,"gl-select-static":189}],174:[function(require,module,exports){
++
++var createShader = require('gl-shader')
++
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\nattribute vec2 position;\nvarying vec2 uv;\nvoid main() {\n  uv = position;\n  gl_Position = vec4(position, 0, 1);\n}"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D accumBuffer;\nvarying vec2 uv;\n\nvoid main() {\n  vec4 accum = texture2D(accumBuffer, 0.5 * (uv + 1.0));\n  gl_FragColor = min(vec4(1,1,1,1), accum);\n}"
++
++module.exports = function(gl) {
++  return createShader(gl, vertSrc, fragSrc, null, [ { name: 'position', type: 'vec2'}])
++}
++
++},{"gl-shader":190}],175:[function(require,module,exports){
++'use strict'
++
++module.exports = createScene
++
++var createCamera = require('3d-view-controls')
++var createAxes   = require('gl-axes3d')
++var axesRanges   = require('gl-axes3d/properties')
++var createSpikes = require('gl-spikes3d')
++var createSelect = require('gl-select-static')
++var createFBO    = require('gl-fbo')
++var drawTriangle = require('a-big-triangle')
++var mouseChange  = require('mouse-change')
++var perspective  = require('gl-mat4/perspective')
++var createShader = require('./lib/shader')
++
++function MouseSelect() {
++  this.mouse          = [-1,-1]
++  this.screen         = null
++  this.distance       = Infinity
++  this.index          = null
++  this.dataCoordinate = null
++  this.dataPosition   = null
++  this.object         = null
++  this.data           = null
++}
++
++function getContext(canvas, options) {
++  var gl = null
++  try {
++    gl = canvas.getContext('webgl', options)
++    if(!gl) {
++      gl = canvas.getContext('experimental-webgl', options)
+     }
++  } catch(e) {
++    return null
++  }
++  return gl
++}
+ 
+-    function sprintf() {
+-        var key = arguments[0], cache = sprintf.cache
+-        if (!(cache[key] && cache.hasOwnProperty(key))) {
+-            cache[key] = sprintf.parse(key)
+-        }
+-        return sprintf.format.call(null, cache[key], arguments)
++function roundUpPow10(x) {
++  var y = Math.round(Math.log(Math.abs(x)) / Math.log(10))
++  if(y < 0) {
++    var base = Math.round(Math.pow(10, -y))
++    return Math.ceil(x*base) / base
++  } else if(y > 0) {
++    var base = Math.round(Math.pow(10, y))
++    return Math.ceil(x/base) * base
++  }
++  return Math.ceil(x)
++}
++
++function defaultBool(x) {
++  if(typeof x === 'boolean') {
++    return x
++  }
++  return true
++}
++
++function createScene(options) {
++  options = options || {}
++
++  var stopped = false
++
++  var pixelRatio = options.pixelRatio || parseFloat(window.devicePixelRatio)
++
++  var canvas = options.canvas
++  if(!canvas) {
++    canvas = document.createElement('canvas')
++    if(options.container) {
++      var container = options.container
++      container.appendChild(canvas)
++    } else {
++      document.body.appendChild(canvas)
+     }
++  }
+ 
+-    sprintf.format = function(parse_tree, argv) {
+-        var cursor = 1, tree_length = parse_tree.length, node_type = "", arg, output = [], i, k, match, pad, pad_character, pad_length, is_positive = true, sign = ""
+-        for (i = 0; i < tree_length; i++) {
+-            node_type = get_type(parse_tree[i])
+-            if (node_type === "string") {
+-                output[output.length] = parse_tree[i]
+-            }
+-            else if (node_type === "array") {
+-                match = parse_tree[i] // convenience purposes only
+-                if (match[2]) { // keyword argument
+-                    arg = argv[cursor]
+-                    for (k = 0; k < match[2].length; k++) {
+-                        if (!arg.hasOwnProperty(match[2][k])) {
+-                            throw new Error(sprintf("[sprintf] property '%s' does not exist", match[2][k]))
+-                        }
+-                        arg = arg[match[2][k]]
+-                    }
+-                }
+-                else if (match[1]) { // positional argument (explicit)
+-                    arg = argv[match[1]]
+-                }
+-                else { // positional argument (implicit)
+-                    arg = argv[cursor++]
+-                }
++  var gl = options.gl
++  if(!gl) {
++    gl = getContext(canvas,
++      options.glOptions || {
++        premultipliedAlpha: true,
++        antialias: true
++      })
++  }
++  if(!gl) {
++    throw new Error('webgl not supported')
++  }
+ 
+-                if (get_type(arg) == "function") {
+-                    arg = arg()
+-                }
++  //Initial bounds
++  var bounds = options.bounds || [[-10,-10,-10], [10,10,10]]
+ 
+-                if (re.not_string.test(match[8]) && re.not_json.test(match[8]) && (get_type(arg) != "number" && isNaN(arg))) {
+-                    throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg)))
+-                }
++  //Create selection
++  var selection = new MouseSelect()
+ 
+-                if (re.number.test(match[8])) {
+-                    is_positive = arg >= 0
+-                }
++  //Accumulation buffer
++  var accumBuffer = createFBO(gl,
++    [gl.drawingBufferWidth, gl.drawingBufferHeight], {
++      preferFloat: true
++    })
+ 
+-                switch (match[8]) {
+-                    case "b":
+-                        arg = arg.toString(2)
+-                    break
+-                    case "c":
+-                        arg = String.fromCharCode(arg)
+-                    break
+-                    case "d":
+-                    case "i":
+-                        arg = parseInt(arg, 10)
+-                    break
+-                    case "j":
+-                        arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
+-                    break
+-                    case "e":
+-                        arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential()
+-                    break
+-                    case "f":
+-                        arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
+-                    break
+-                    case "g":
+-                        arg = match[7] ? parseFloat(arg).toPrecision(match[7]) : parseFloat(arg)
+-                    break
+-                    case "o":
+-                        arg = arg.toString(8)
+-                    break
+-                    case "s":
+-                        arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg)
+-                    break
+-                    case "u":
+-                        arg = arg >>> 0
+-                    break
+-                    case "x":
+-                        arg = arg.toString(16)
+-                    break
+-                    case "X":
+-                        arg = arg.toString(16).toUpperCase()
+-                    break
+-                }
+-                if (re.json.test(match[8])) {
+-                    output[output.length] = arg
+-                }
+-                else {
+-                    if (re.number.test(match[8]) && (!is_positive || match[3])) {
+-                        sign = is_positive ? "+" : "-"
+-                        arg = arg.toString().replace(re.sign, "")
+-                    }
+-                    else {
+-                        sign = ""
+-                    }
+-                    pad_character = match[4] ? match[4] === "0" ? "0" : match[4].charAt(1) : " "
+-                    pad_length = match[6] - (sign + arg).length
+-                    pad = match[6] ? (pad_length > 0 ? str_repeat(pad_character, pad_length) : "") : ""
+-                    output[output.length] = match[5] ? sign + arg + pad : (pad_character === "0" ? sign + pad + arg : pad + sign + arg)
+-                }
+-            }
+-        }
+-        return output.join("")
++  var accumShader = createShader(gl)
++
++  //Create a camera
++  var cameraOptions = options.camera || {
++    eye:    [2,0,0],
++    center: [0,0,0],
++    up:     [0,1,0],
++    zoomMin: 0.1,
++    zoomMax: 100,
++    mode:    'turntable'
++  }
++
++  //Create axes
++  var axesOptions = options.axes || {}
++  var axes = createAxes(gl, axesOptions)
++  axes.enable = !axesOptions.disable
++
++  //Create spikes
++  var spikeOptions = options.spikes || {}
++  var spikes = createSpikes(gl, spikeOptions)
++
++  //Object list is empty initially
++  var objects         = []
++  var pickBufferIds   = []
++  var pickBufferCount = []
++  var pickBuffers     = []
++
++  //Dirty flag, skip redraw if scene static
++  var dirty       = true
++  var pickDirty   = true
++
++  var projection     = new Array(16)
++  var model          = new Array(16)
++
++  var cameraParams = {
++    view:         null,
++    projection:   projection,
++    model:        model
++  }
++
++  var pickDirty = true
++
++  var viewShape = [ gl.drawingBufferWidth, gl.drawingBufferHeight ]
++
++  //Create scene object
++  var scene = {
++    gl:           gl,
++    contextLost:  false,
++    pixelRatio:   options.pixelRatio || parseFloat(window.devicePixelRatio),
++    canvas:       canvas,
++    selection:    selection,
++    camera:       createCamera(canvas, cameraOptions),
++    axes:         axes,
++    axesPixels:   null,
++    spikes:       spikes,
++    bounds:       bounds,
++    objects:      objects,
++    shape:        viewShape,
++    aspect:       options.aspectRatio || [1,1,1],
++    pickRadius:   options.pickRadius || 10,
++    zNear:        options.zNear || 0.01,
++    zFar:         options.zFar  || 1000,
++    fovy:         options.fovy  || Math.PI/4,
++    clearColor:   options.clearColor || [0,0,0,0],
++    autoResize:   defaultBool(options.autoResize),
++    autoBounds:   defaultBool(options.autoBounds),
++    autoScale:    !!options.autoScale,
++    autoCenter:   defaultBool(options.autoCenter),
++    clipToBounds: defaultBool(options.clipToBounds),
++    snapToData:   !!options.snapToData,
++    onselect:     options.onselect || null,
++    onrender:     options.onrender || null,
++    onclick:      options.onclick  || null,
++    cameraParams: cameraParams,
++    oncontextloss: null,
++    mouseListener: null
++  }
++
++  var pickShape = [ (gl.drawingBufferWidth/scene.pixelRatio)|0, (gl.drawingBufferHeight/scene.pixelRatio)|0 ]
++
++  function resizeListener() {
++    if(stopped) {
++      return
++    }
++    if(!scene.autoResize) {
++      return
++    }
++    var parent = canvas.parentNode
++    var width  = 1
++    var height = 1
++    if(parent && parent !== document.body) {
++      width  = parent.clientWidth
++      height = parent.clientHeight
++    } else {
++      width  = window.innerWidth
++      height = window.innerHeight
++    }
++    var nextWidth  = Math.ceil(width  * scene.pixelRatio)|0
++    var nextHeight = Math.ceil(height * scene.pixelRatio)|0
++    if(nextWidth !== canvas.width || nextHeight !== canvas.height) {
++      canvas.width   = nextWidth
++      canvas.height  = nextHeight
++      var style = canvas.style
++      style.position = style.position || 'absolute'
++      style.left     = '0px'
++      style.top      = '0px'
++      style.width    = width  + 'px'
++      style.height   = height + 'px'
++      dirty = true
++    }
++  }
++  if(scene.autoResize) {
++    resizeListener()
++  }
++  window.addEventListener('resize', resizeListener)
++
++  function reallocPickIds() {
++    var numObjs = objects.length
++    var numPick = pickBuffers.length
++    for(var i=0; i<numPick; ++i) {
++      pickBufferCount[i] = 0
+     }
+-
+-    sprintf.cache = {}
+-
+-    sprintf.parse = function(fmt) {
+-        var _fmt = fmt, match = [], parse_tree = [], arg_names = 0
+-        while (_fmt) {
+-            if ((match = re.text.exec(_fmt)) !== null) {
+-                parse_tree[parse_tree.length] = match[0]
+-            }
+-            else if ((match = re.modulo.exec(_fmt)) !== null) {
+-                parse_tree[parse_tree.length] = "%"
+-            }
+-            else if ((match = re.placeholder.exec(_fmt)) !== null) {
+-                if (match[2]) {
+-                    arg_names |= 1
+-                    var field_list = [], replacement_field = match[2], field_match = []
+-                    if ((field_match = re.key.exec(replacement_field)) !== null) {
+-                        field_list[field_list.length] = field_match[1]
+-                        while ((replacement_field = replacement_field.substring(field_match[0].length)) !== "") {
+-                            if ((field_match = re.key_access.exec(replacement_field)) !== null) {
+-                                field_list[field_list.length] = field_match[1]
+-                            }
+-                            else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
+-                                field_list[field_list.length] = field_match[1]
+-                            }
+-                            else {
+-                                throw new SyntaxError("[sprintf] failed to parse named argument key")
+-                            }
+-                        }
+-                    }
+-                    else {
+-                        throw new SyntaxError("[sprintf] failed to parse named argument key")
+-                    }
+-                    match[2] = field_list
+-                }
+-                else {
+-                    arg_names |= 2
+-                }
+-                if (arg_names === 3) {
+-                    throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
+-                }
+-                parse_tree[parse_tree.length] = match
+-            }
+-            else {
+-                throw new SyntaxError("[sprintf] unexpected placeholder")
+-            }
+-            _fmt = _fmt.substring(match[0].length)
++    obj_loop:
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
++      var pickCount = obj.pickSlots
++      if(!pickCount) {
++        pickBufferIds[i] = -1
++        continue
++      }
++      for(var j=0; j<numPick; ++j) {
++        if(pickBufferCount[j] + pickCount < 255) {
++          pickBufferIds[i] = j
++          obj.setPickBase(pickBufferCount[j]+1)
++          pickBufferCount[j] += pickCount
++          continue obj_loop
+         }
+-        return parse_tree
++      }
++      //Create new pick buffer
++      var nbuffer = createSelect(gl, viewShape)
++      pickBufferIds[i] = numPick
++      pickBuffers.push(nbuffer)
++      pickBufferCount.push(pickCount)
++      obj.setPickBase(1)
++      numPick += 1
+     }
+-
+-    var vsprintf = function(fmt, argv, _argv) {
+-        _argv = (argv || []).slice(0)
+-        _argv.splice(0, 0, fmt)
+-        return sprintf.apply(null, _argv)
++    while(numPick > 0 && pickBufferCount[numPick-1] === 0) {
++      pickBufferCount.pop()
++      pickBuffers.pop().dispose()
+     }
++  }
+ 
+-    /**
+-     * helpers
+-     */
+-    function get_type(variable) {
+-        return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase()
++  scene.update = function(options) {
++    if(stopped) {
++      return
+     }
++    options = options || {}
++    dirty = true
++    pickDirty = true
++  }
+ 
+-    function str_repeat(input, multiplier) {
+-        return Array(multiplier + 1).join(input)
++  scene.add = function(obj) {
++    if(stopped) {
++      return
+     }
++    obj.axes = axes
++    objects.push(obj)
++    pickBufferIds.push(-1)
++    dirty = true
++    pickDirty = true
++    reallocPickIds()
++  }
+ 
+-    /**
+-     * export to either browser or node.js
+-     */
+-    if (typeof exports !== "undefined") {
+-        exports.sprintf = sprintf
+-        exports.vsprintf = vsprintf
++  scene.remove = function(obj) {
++    if(stopped) {
++      return
+     }
+-    else {
+-        window.sprintf = sprintf
+-        window.vsprintf = vsprintf
++    var idx = objects.indexOf(obj)
++    if(idx < 0) {
++      return
++    }
++    objects.splice(idx, 1)
++    pickBufferIds.pop()
++    dirty = true
++    pickDirty = true
++    reallocPickIds()
++  }
+ 
+-        if (typeof define === "function" && define.amd) {
+-            define(function() {
+-                return {
+-                    sprintf: sprintf,
+-                    vsprintf: vsprintf
+-                }
+-            })
+-        }
++  scene.dispose = function() {
++    if(stopped) {
++      return
+     }
+-})(typeof window === "undefined" ? this : window);
+ 
+-},{}],218:[function(require,module,exports){
+-var hiddenStore = require('./hidden-store.js');
++    stopped = true
+ 
+-module.exports = createStore;
++    window.removeEventListener('resize', resizeListener)
++    canvas.removeEventListener('webglcontextlost', checkContextLoss)
++    scene.mouseListener.enabled = false
+ 
+-function createStore() {
+-    var key = {};
++    if(scene.contextLost) {
++      return
++    }
+ 
+-    return function (obj) {
+-        if ((typeof obj !== 'object' || obj === null) &&
+-            typeof obj !== 'function'
+-        ) {
+-            throw new Error('Weakmap-shim: Key must be object')
+-        }
++    //Destroy objects
++    axes.dispose()
++    spikes.dispose()
++    for(var i=0; i<objects.length; ++i) {
++      objects[i].dispose()
++    }
+ 
+-        var store = obj.valueOf(key);
+-        return store && store.identity === key ?
+-            store : hiddenStore(obj, key);
+-    };
+-}
++    //Clean up buffers
++    accumBuffer.dispose()
++    for(var i=0; i<pickBuffers.length; ++i) {
++      pickBuffers[i].dispose()
++    }
+ 
+-},{"./hidden-store.js":219}],219:[function(require,module,exports){
+-module.exports = hiddenStore;
++    //Clean up shaders
++    accumShader.dispose()
+ 
+-function hiddenStore(obj, key) {
+-    var store = { identity: key };
+-    var valueOf = obj.valueOf;
++    //Release all references
++    gl = null
++    axes = null
++    spikes = null
++    objects = []
++  }
+ 
+-    Object.defineProperty(obj, "valueOf", {
+-        value: function (value) {
+-            return value !== key ?
+-                valueOf.apply(this, arguments) : store;
+-        },
+-        writable: true
+-    });
++  //Update mouse position
++  var mouseRotating = false
+ 
+-    return store;
+-}
++  var prevButtons = 0
+ 
+-},{}],220:[function(require,module,exports){
+-// Original - @Gozola. 
+-// https://gist.github.com/Gozala/1269991
+-// This is a reimplemented version (with a few bug fixes).
++  scene.mouseListener = mouseChange(canvas, function(buttons, x, y) {
++    if(stopped) {
++      return
++    }
+ 
+-var createStore = require('./create-store.js');
++    var numPick = pickBuffers.length
++    var numObjs = objects.length
++    var prevObj = selection.object
+ 
+-module.exports = weakMap;
++    selection.distance = Infinity
++    selection.mouse[0] = x
++    selection.mouse[1] = y
++    selection.object = null
++    selection.screen = null
++    selection.dataCoordinate = selection.dataPosition = null
+ 
+-function weakMap() {
+-    var privates = createStore();
++    var change = false
+ 
+-    return {
+-        'get': function (key, fallback) {
+-            var store = privates(key)
+-            return store.hasOwnProperty('value') ?
+-                store.value : fallback
+-        },
+-        'set': function (key, value) {
+-            privates(key).value = value;
+-        },
+-        'has': function(key) {
+-            return 'value' in privates(key);
+-        },
+-        'delete': function (key) {
+-            return delete privates(key).value;
++    if(buttons && prevButtons) {
++      mouseRotating = true
++    } else {
++      if(mouseRotating) {
++        pickDirty = true
++      }
++      mouseRotating = false
++
++      for(var i=0; i<numPick; ++i) {
++        var result = pickBuffers[i].query(x, pickShape[1] - y - 1, scene.pickRadius)
++        if(result) {
++          if(result.distance > selection.distance) {
++            continue
++          }
++          for(var j=0; j<numObjs; ++j) {
++            var obj = objects[j]
++            if(pickBufferIds[j] !== i) {
++              continue
++            }
++            var objPick = obj.pick(result)
++            if(objPick) {
++              selection.buttons        = buttons
++              selection.screen         = result.coord
++              selection.distance       = result.distance
++              selection.object         = obj
++              selection.index          = objPick.distance
++              selection.dataPosition   = objPick.position
++              selection.dataCoordinate = objPick.dataCoordinate
++              selection.data           = objPick
++              change = true
++            }
++          }
+         }
++      }
+     }
+-}
+ 
+-},{"./create-store.js":218}],221:[function(require,module,exports){
+-'use strict'
++    if(prevObj && prevObj !== selection.object) {
++      if(prevObj.highlight) {
++        prevObj.highlight(null)
++      }
++      dirty = true
++    }
++    if(selection.object) {
++      if(selection.object.highlight) {
++        selection.object.highlight(selection.data)
++      }
++      dirty = true
++    }
+ 
+-module.exports = createSpikes2D
++    change = change || (selection.object !== prevObj)
++    if(change && scene.onselect) {
++      scene.onselect(selection)
++    }
+ 
+-function GLSpikes2D(plot) {
+-  this.plot = plot
+-  this.enable = [true, true, false, false]
+-  this.width  = [1, 1, 1, 1]
+-  this.color  = [[0,0,0,1],
+-                 [0,0,0,1],
+-                 [0,0,0,1],
+-                 [0,0,0,1]]
+-  this.center = [Infinity, Infinity]
+-}
++    if((buttons & 1) && !(prevButtons & 1) && scene.onclick) {
++      scene.onclick(selection)
++    }
++    prevButtons = buttons
++  })
+ 
+-var proto = GLSpikes2D.prototype
++  function checkContextLoss() {
++    if(scene.contextLost) {
++      return true
++    }
++    if(gl.isContextLost()) {
++      scene.contextLost = true
++      scene.mouseListener.enabled = false
++      scene.selection.object = null
++      if(scene.oncontextloss) {
++        scene.oncontextloss()
++      }
++    }
++  }
+ 
+-proto.update = function(options) {
+-  options = options || {}
+-  this.enable = (options.enable || [true,true,false,false]).slice()
+-  this.width  = (options.width || [1,1,1,1]).slice()
+-  this.color  = (options.color || [
+-                  [0,0,0,1],
+-                  [0,0,0,1],
+-                  [0,0,0,1],
+-                  [0,0,0,1]]).map(function(x) { return x.slice() })
+-  this.center = (options.center || [Infinity,Infinity]).slice()
+-  this.plot.setOverlayDirty()
+-}
++  canvas.addEventListener('webglcontextlost', checkContextLoss)
+ 
+-proto.draw = function() {
+-  var spikeEnable = this.enable
+-  var spikeWidth  = this.width
+-  var spikeColor  = this.color
+-  var spikeCenter = this.center
+-  var plot        = this.plot
+-  var line        = plot.line
++  //Render the scene for mouse picking
++  function renderPick() {
++    if(checkContextLoss()) {
++      return
++    }
+ 
+-  var dataBox     = plot.dataBox
+-  var viewPixels  = plot.viewBox
++    gl.colorMask(true, true, true, true)
++    gl.depthMask(true)
++    gl.disable(gl.BLEND)
++    gl.enable(gl.DEPTH_TEST)
+ 
+-  line.bind()
++    var numObjs = objects.length
++    var numPick = pickBuffers.length
++    for(var j=0; j<numPick; ++j) {
++      var buf = pickBuffers[j]
++      buf.shape = pickShape
++      buf.begin()
++      for(var i=0; i<numObjs; ++i) {
++        if(pickBufferIds[i] !== j) {
++          continue
++        }
++        var obj = objects[i]
++        if(obj.drawPick) {
++          obj.pixelRatio = 1
++          obj.drawPick(cameraParams)
++        }
++      }
++      buf.end()
++    }
++  }
+ 
+-  if(dataBox[0] <= spikeCenter[0] && spikeCenter[0] <= dataBox[2] &&
+-     dataBox[1] <= spikeCenter[1] && spikeCenter[1] <= dataBox[3]) {
++  var nBounds = [
++    [ Infinity, Infinity, Infinity],
++    [-Infinity,-Infinity,-Infinity]]
+ 
+-    var centerX = viewPixels[0] + (spikeCenter[0] - dataBox[0]) / (dataBox[2] - dataBox[0]) * (viewPixels[2] - viewPixels[0])
+-    var centerY = viewPixels[1] + (spikeCenter[1] - dataBox[1]) / (dataBox[3] - dataBox[1]) * (viewPixels[3] - viewPixels[1])
++  var prevBounds = [nBounds[0].slice(), nBounds[1].slice()]
+ 
+-    if(spikeEnable[0]) {
+-     line.drawLine(
+-       centerX, centerY,
+-       viewPixels[0], centerY,
+-       spikeWidth[0], spikeColor[0])
+-    }
+-    if(spikeEnable[1]) {
+-     line.drawLine(
+-       centerX, centerY,
+-       centerX, viewPixels[1],
+-       spikeWidth[1], spikeColor[1])
+-    }
+-    if(spikeEnable[2]) {
+-      line.drawLine(
+-        centerX, centerY,
+-        viewPixels[2], centerY,
+-        spikeWidth[2], spikeColor[2])
+-    }
+-    if(spikeEnable[3]) {
+-      line.drawLine(
+-        centerX, centerY,
+-        centerX, viewPixels[3],
+-        spikeWidth[3], spikeColor[3])
++  function redraw() {
++    if(checkContextLoss()) {
++      return
+     }
+-  }
+-}
+ 
+-proto.dispose = function() {
+-  this.plot.removeOverlay(this)
+-}
++    resizeListener()
+ 
+-function createSpikes2D(plot, options) {
+-  var spikes = new GLSpikes2D(plot)
+-  spikes.update(options)
+-  plot.addOverlay(spikes)
+-  return spikes
+-}
++    //Tick camera
++    var cameraMoved = scene.camera.tick()
++    cameraParams.view = scene.camera.matrix
++    dirty     = dirty || cameraMoved
++    pickDirty = pickDirty || cameraMoved
+ 
+-},{}],222:[function(require,module,exports){
+-var createShader = require('gl-shader')
++      //Set pixel ratio
++    axes.pixelRatio   = scene.pixelRatio
++    spikes.pixelRatio = scene.pixelRatio
+ 
++    //Check if any objects changed, recalculate bounds
++    var numObjs = objects.length
++    var lo = nBounds[0]
++    var hi = nBounds[1]
++    lo[0] = lo[1] = lo[2] =  Infinity
++    hi[0] = hi[1] = hi[2] = -Infinity
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
+ 
+-var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute vec3 f;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection, inverseModel;\nuniform vec3 lightPosition, eyePosition;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  worldCoordinate = vec3(uv.zw, f.x);\n  vec4 worldPosition = model * vec4(worldCoordinate, 1.0);\n  vec4 clipPosition = projection * view * worldPosition;\n  gl_Position = clipPosition;\n  kill = f.y;\n  value = f.z;\n  planeCoordinate = uv.xy;\n\n  //Lighting geometry parameters\n  vec4 cameraCoordinate = view * worldPosition;\n  cameraCoordinate.xyz /= cameraCoordinate.w;\n  lightDirection = lightPosition - cameraCoordinate.xyz;\n  eyeDirection   = eyePosition - cameraCoordinate.xyz;\n  surfaceNormal  = normalize((vec4(normal,0) * inverseModel).xyz);\n}\n"
+-var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat beckmannSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness) {\n  return beckmannDistribution_2_0(dot(surfaceNormal, normalize(lightDirection + viewDirection)), roughness);\n}\n\n\n\nuniform vec3 lowerBound, upperBound;\nuniform float contourTint;\nuniform vec4 contourColor;\nuniform sampler2D colormap;\nuniform vec3 clipBounds[2];\nuniform float roughness, fresnel, kambient, kdiffuse, kspecular, opacity;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(surfaceNormal);\n  vec3 V = normalize(eyeDirection);\n  vec3 L = normalize(lightDirection);\n\n  if(gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = beckmannSpecular_1_1(L, V, N, roughness);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = texture2D(colormap, vec2(value, value));\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = mix(litColor, contourColor, contourTint) * opacity;\n}\n"
+-var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute float f;\n\nuniform mat3 permutation;\nuniform mat4 model, view, projection;\nuniform float height, zOffset;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  vec3 dataCoordinate = permutation * vec3(uv.xy, height);\n  vec4 worldPosition = model * vec4(dataCoordinate, 1.0);\n\n  vec4 clipPosition = projection * view * worldPosition;\n  clipPosition.z = clipPosition.z + zOffset;\n\n  gl_Position = clipPosition;\n  value = f;\n  kill = -1.0;\n  worldCoordinate = dataCoordinate;\n  planeCoordinate = uv.zw;\n\n  //Don't do lighting for contours\n  surfaceNormal   = vec3(1,0,0);\n  eyeDirection    = vec3(0,1,0);\n  lightDirection  = vec3(0,0,1);\n}\n"
+-var pickSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec2 shape;\nuniform vec3 clipBounds[2];\nuniform float pickId;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 surfaceNormal;\n\nvec2 splitFloat(float v) {\n  float vh = 255.0 * v;\n  float upper = floor(vh);\n  float lower = fract(vh);\n  return vec2(upper / 255.0, floor(lower * 16.0) / 16.0);\n}\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n  vec2 ux = splitFloat(planeCoordinate.x / shape.x);\n  vec2 uy = splitFloat(planeCoordinate.y / shape.y);\n  gl_FragColor = vec4(pickId, ux.x, uy.x, ux.y + (uy.y/16.0));\n}\n"
++      //Set the axes properties for each object
++      obj.pixelRatio = scene.pixelRatio
++      obj.axes = scene.axes
+ 
+-exports.createShader = function (gl) {
+-  var shader = createShader(gl, vertSrc, fragSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  shader.attributes.normal.location = 2
+-  return shader
+-}
+-exports.createPickShader = function (gl) {
+-  var shader = createShader(gl, vertSrc, pickSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'vec3'},
+-    {name: 'normal', type: 'vec3'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  shader.attributes.normal.location = 2
+-  return shader
+-}
+-exports.createContourShader = function (gl) {
+-  var shader = createShader(gl, contourVertSrc, fragSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'float'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  return shader
+-}
+-exports.createPickContourShader = function (gl) {
+-  var shader = createShader(gl, contourVertSrc, pickSrc, null, [
+-    {name: 'uv', type: 'vec4'},
+-    {name: 'f', type: 'float'}
+-  ])
+-  shader.attributes.uv.location = 0
+-  shader.attributes.f.location = 1
+-  return shader
+-}
++      dirty = dirty || !!obj.dirty
++      pickDirty = pickDirty || !!obj.dirty
++      var obb = obj.bounds
++      if(obb) {
++        var olo = obb[0]
++        var ohi = obb[1]
++        for(var j=0; j<3; ++j) {
++          lo[j] = Math.min(lo[j], olo[j])
++          hi[j] = Math.max(hi[j], ohi[j])
++        }
++      }
++    }
++
++    //Recalculate bounds
++    var bounds = scene.bounds
++    if(scene.autoBounds) {
++      for(var j=0; j<3; ++j) {
++        if(hi[j] < lo[j]) {
++          lo[j] = -1
++          hi[j] = 1
++        } else {
++          if(lo[j] === hi[j]) {
++            lo[j] -= 1
++            hi[j] += 1
++          }
++          var padding = 0.05 * (hi[j] - lo[j])
++          lo[j] = lo[j] - padding
++          hi[j] = hi[j] + padding
++        }
++        bounds[0][j] = lo[j]
++        bounds[1][j] = hi[j]
++      }
++    }
++
++    var boundsChanged = false
++    for(var j=0; j<3; ++j) {
++        boundsChanged = boundsChanged ||
++            (prevBounds[0][j] !== bounds[0][j])  ||
++            (prevBounds[1][j] !== bounds[1][j])
++        prevBounds[0][j] = bounds[0][j]
++        prevBounds[1][j] = bounds[1][j]
++    }
+ 
+-},{"gl-shader":203}],223:[function(require,module,exports){
+-arguments[4][22][0].apply(exports,arguments)
+-},{"dup":22}],224:[function(require,module,exports){
+-'use strict'
++    if(boundsChanged) {
++      var tickSpacing = [0,0,0]
++      for(var i=0; i<3; ++i) {
++        tickSpacing[i] = roundUpPow10((bounds[1][i]-bounds[0][i]) / 10.0)
++      }
++      if(axes.autoTicks) {
++        axes.update({
++          bounds: bounds,
++          tickSpacing: tickSpacing
++        })
++      } else {
++        axes.update({
++          bounds: bounds
++        })
++      }
++    }
+ 
+-module.exports      = gradient
++    //Recalculate bounds
++    pickDirty = pickDirty || boundsChanged
++    dirty = dirty || boundsChanged
+ 
+-var dup             = require('dup')
+-var cwiseCompiler   = require('cwise-compiler')
++    //Get scene
++    var width  = gl.drawingBufferWidth
++    var height = gl.drawingBufferHeight
++    viewShape[0] = width
++    viewShape[1] = height
++    pickShape[0] = Math.max(width/scene.pixelRatio, 1)|0
++    pickShape[1] = Math.max(height/scene.pixelRatio, 1)|0
+ 
+-var TEMPLATE_CACHE  = {}
+-var GRADIENT_CACHE  = {}
++    //Compute camera parameters
++    perspective(projection,
++      scene.fovy,
++      width/height,
++      scene.zNear,
++      scene.zFar)
+ 
+-var EmptyProc = {
+-  body: "",
+-  args: [],
+-  thisVars: [],
+-  localVars: []
+-}
++    //Compute model matrix
++    for(var i=0; i<16; ++i) {
++      model[i] = 0
++    }
++    model[15] = 1
+ 
+-var centralDiff = cwiseCompiler({
+-  args: [ 'array', 'array', 'array' ],
+-  pre: EmptyProc,
+-  post: EmptyProc,
+-  body: {
+-    args: [ {
+-      name: 'out', 
+-      lvalue: true,
+-      rvalue: false,
+-      count: 1
+-    }, {
+-      name: 'left', 
+-      lvalue: false,
+-      rvalue: true,
+-      count: 1
+-    }, {
+-      name: 'right', 
+-      lvalue: false,
+-      rvalue: true,
+-      count: 1
+-    }],
+-    body: "out=0.5*(left-right)",
+-    thisVars: [],
+-    localVars: []
+-  },
+-  funcName: 'cdiff'
+-})
++    var maxS = 0
++    for(var i=0; i<3; ++i) {
++      maxS = Math.max(maxS, bounds[1][i] - bounds[0][i])
++    }
+ 
+-var zeroOut = cwiseCompiler({
+-  args: [ 'array' ],
+-  pre: EmptyProc,
+-  post: EmptyProc,
+-  body: {
+-    args: [ {
+-      name: 'out', 
+-      lvalue: true,
+-      rvalue: false,
+-      count: 1
+-    }],
+-    body: "out=0",
+-    thisVars: [],
+-    localVars: []
+-  },
+-  funcName: 'zero'
+-})
++    for(var i=0; i<3; ++i) {
++      if(scene.autoScale) {
++        model[5*i] = scene.aspect[i] / (bounds[1][i] - bounds[0][i])
++      } else {
++        model[5*i] = 1  / maxS
++      }
++      if(scene.autoCenter) {
++        model[12+i] = -model[5*i] * 0.5 * (bounds[0][i] + bounds[1][i])
++      }
++    }
+ 
+-function generateTemplate(d) {
+-  if(d in TEMPLATE_CACHE) {
+-    return TEMPLATE_CACHE[d]
+-  }
+-  var code = []
+-  for(var i=0; i<d; ++i) {
+-    code.push('out', i, 's=0.5*(inp', i, 'l-inp', i, 'r);')
+-  }
+-  var args = [ 'array' ]
+-  var names = ['junk']
+-  for(var i=0; i<d; ++i) {
+-    args.push('array')
+-    names.push('out' + i + 's')
+-    var o = dup(d)
+-    o[i] = -1
+-    args.push({
+-      array: 0,
+-      offset: o.slice()
+-    })
+-    o[i] = 1
+-    args.push({
+-      array: 0,
+-      offset: o.slice()
+-    })
+-    names.push('inp' + i + 'l', 'inp' + i + 'r')
+-  }
+-  return TEMPLATE_CACHE[d] = cwiseCompiler({
+-    args: args,
+-    pre:  EmptyProc,
+-    post: EmptyProc,
+-    body: {
+-      body: code.join(''),
+-      args: names.map(function(n) {
+-        return {
+-          name: n,
+-          lvalue: n.indexOf('out') === 0,
+-          rvalue: n.indexOf('inp') === 0,
+-          count: (n!=='junk')|0
+-        }
+-      }),
+-      thisVars: [],
+-      localVars: []
+-    },
+-    funcName: 'fdTemplate' + d
+-  })
+-}
++    //Apply axes/clip bounds
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
+ 
+-function generateGradient(boundaryConditions) {
+-  var token = boundaryConditions.join()
+-  var proc = GRADIENT_CACHE[token]
+-  if(proc) {
+-    return proc
+-  }
++      //Set axes bounds
++      obj.axesBounds = bounds
+ 
+-  var d = boundaryConditions.length
+-  var code = ['function gradient(dst,src){var s=src.shape.slice();' ]
+-  
+-  function handleBoundary(facet) {
+-    var cod = d - facet.length
++      //Set clip bounds
++      if(scene.clipToBounds) {
++        obj.clipBounds = bounds
++      }
++    }
+ 
+-    var loStr = []
+-    var hiStr = []
+-    var pickStr = []
+-    for(var i=0; i<d; ++i) {
+-      if(facet.indexOf(i+1) >= 0) {
+-        pickStr.push('0')
+-      } else if(facet.indexOf(-(i+1)) >= 0) {
+-        pickStr.push('s['+i+']-1')
++    //Set spike parameters
++    if(selection.object) {
++      if(scene.snapToData) {
++        spikes.position = selection.dataCoordinate
+       } else {
+-        pickStr.push('-1')
+-        loStr.push('1')
+-        hiStr.push('s['+i+']-2')
++        spikes.position = selection.dataPosition
+       }
++      spikes.bounds = bounds
+     }
+-    var boundStr = '.lo(' + loStr.join() + ').hi(' + hiStr.join() + ')'
+-    if(loStr.length === 0) {
+-      boundStr = ''
++
++    //If state changed, then redraw pick buffers
++    if(pickDirty) {
++      pickDirty = false
++      renderPick()
+     }
+-        
+-    if(cod > 0) {
+-      code.push('if(1') 
+-      for(var i=0; i<d; ++i) {
+-        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
+-          continue
+-        }
+-        code.push('&&s[', i, ']>2')
+-      }
+-      code.push('){grad', cod, '(src.pick(', pickStr.join(), ')', boundStr)
+-      for(var i=0; i<d; ++i) {
+-        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
+-          continue
+-        }
+-        code.push(',dst.pick(', pickStr.join(), ',', i, ')', boundStr)
+-      }
+-      code.push(');')
++
++    if(!dirty) {
++      return
+     }
+ 
+-    for(var i=0; i<facet.length; ++i) {
+-      var bnd = Math.abs(facet[i])-1
+-      var outStr = 'dst.pick(' + pickStr.join() + ',' + bnd + ')' + boundStr
+-      switch(boundaryConditions[bnd]) {
++    //Recalculate pixel data
++    scene.axesPixels = axesRanges(scene.axes, cameraParams, width, height)
+ 
+-        case 'clamp':
+-          var cPickStr = pickStr.slice()
+-          var dPickStr = pickStr.slice()
+-          if(facet[i] < 0) {
+-            cPickStr[bnd] = 's[' + bnd + ']-2'
+-          } else {
+-            dPickStr[bnd] = '1'
+-          }
+-          if(cod === 0) {
+-            code.push('if(s[', bnd, ']>1){dst.set(',
+-              pickStr.join(), ',', bnd, ',0.5*(src.get(',
+-                cPickStr.join(), ')-src.get(',
+-                dPickStr.join(), ')))}else{dst.set(',
+-              pickStr.join(), ',', bnd, ',0)};')
+-          } else {
+-            code.push('if(s[', bnd, ']>1){diff(', outStr, 
+-                ',src.pick(', cPickStr.join(), ')', boundStr, 
+-                ',src.pick(', dPickStr.join(), ')', boundStr, 
+-                ');}else{zero(', outStr, ');};')
+-          }
+-        break
++    //Call render callback
++    if(scene.onrender) {
++      scene.onrender()
++    }
+ 
+-        case 'mirror':
+-          if(cod === 0) {
+-            code.push('dst.set(', pickStr.join(), ',', bnd, ',0);')
+-          } else {
+-            code.push('zero(', outStr, ');')
+-          }
+-        break
++    //Read value
++    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++    gl.viewport(0, 0, width, height)
+ 
+-        case 'wrap':
+-          var aPickStr = pickStr.slice()
+-          var bPickStr = pickStr.slice()
+-          if(facet[i] < 0) {
+-            aPickStr[bnd] = 's[' + bnd + ']-2'
+-            bPickStr[bnd] = '0'
+-            
+-          } else {
+-            aPickStr[bnd] = 's[' + bnd + ']-1'
+-            bPickStr[bnd] = '1'
+-          }
+-          if(cod === 0) {
+-            code.push('if(s[', bnd, ']>2){dst.set(',
+-              pickStr.join(), ',', bnd, ',0.5*(src.get(',
+-                aPickStr.join(), ')-src.get(',
+-                bPickStr.join(), ')))}else{dst.set(',
+-              pickStr.join(), ',', bnd, ',0)};')
+-          } else {
+-            code.push('if(s[', bnd, ']>2){diff(', outStr, 
+-                ',src.pick(', aPickStr.join(), ')', boundStr, 
+-                ',src.pick(', bPickStr.join(), ')', boundStr, 
+-                ');}else{zero(', outStr, ');};')
+-          }
+-        break
++    //General strategy: 3 steps
++    //  1. render non-transparent objects
++    //  2. accumulate transparent objects into separate fbo
++    //  3. composite final scene
+ 
+-        default:
+-          throw new Error('ndarray-gradient: Invalid boundary condition')
+-      }
+-    }
++    //Clear FBO
++    var clearColor = scene.clearColor
++    gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3])
++    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
++    gl.depthMask(true)
++    gl.colorMask(true, true, true, true)
++    gl.enable(gl.DEPTH_TEST)
++    gl.depthFunc(gl.LEQUAL)
++    gl.disable(gl.BLEND)
++    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
+ 
+-    if(cod > 0) {
+-      code.push('};')
++    //Render opaque pass
++    var hasTransparent = false
++    if(axes.enable) {
++      hasTransparent = hasTransparent || axes.isTransparent()
++      axes.draw(cameraParams)
++    }
++    spikes.axes = axes
++    if(selection.object) {
++      spikes.draw(cameraParams)
+     }
+-  }
+ 
+-  //Enumerate ridges, facets, etc. of hypercube
+-  for(var i=0; i<(1<<d); ++i) {
+-    var faces = []
+-    for(var j=0; j<d; ++j) {
+-      if(i & (1<<j)) {
+-        faces.push(j+1)
++    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided
++
++    for(var i=0; i<numObjs; ++i) {
++      var obj = objects[i]
++      obj.axes = axes
++      obj.pixelRatio = scene.pixelRatio
++      if(obj.isOpaque && obj.isOpaque()) {
++        obj.draw(cameraParams)
++      }
++      if(obj.isTransparent && obj.isTransparent()) {
++        hasTransparent = true
+       }
+     }
+-    for(var k=0; k<(1<<faces.length); ++k) {
+-      var sfaces = faces.slice()
+-      for(var j=0; j<faces.length; ++j) {
+-        if(k & (1<<j)) {
+-          sfaces[j] = -sfaces[j]
++
++    if(hasTransparent) {
++      //Render transparent pass
++      accumBuffer.shape = viewShape
++      accumBuffer.bind()
++      gl.clear(gl.DEPTH_BUFFER_BIT)
++      gl.colorMask(false, false, false, false)
++      gl.depthMask(true)
++      gl.depthFunc(gl.LESS)
++
++      //Render forward facing objects
++      if(axes.enable && axes.isTransparent()) {
++        axes.drawTransparent(cameraParams)
++      }
++      for(var i=0; i<numObjs; ++i) {
++        var obj = objects[i]
++        if(obj.isOpaque && obj.isOpaque()) {
++          obj.draw(cameraParams)
+         }
+       }
+-      handleBoundary(sfaces)
+-    }
+-  }
+ 
+-  code.push('return dst;};return gradient')
++      //Render transparent pass
++      gl.enable(gl.BLEND)
++      gl.blendEquation(gl.FUNC_ADD)
++      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
++      gl.colorMask(true, true, true, true)
++      gl.depthMask(false)
++      gl.clearColor(0,0,0,0)
++      gl.clear(gl.COLOR_BUFFER_BIT)
+ 
+-  //Compile and link routine, save cached procedure
+-  var linkNames = [ 'diff', 'zero' ]
+-  var linkArgs  = [ centralDiff, zeroOut ]
+-  for(var i=1; i<=d; ++i) {
+-    linkNames.push('grad' + i)
+-    linkArgs.push(generateTemplate(i))
+-  }
+-  linkNames.push(code.join(''))
++      if(axes.isTransparent()) {
++        axes.drawTransparent(cameraParams)
++      }
+ 
+-  var link = Function.apply(void 0, linkNames)
+-  var proc = link.apply(void 0, linkArgs)
+-  TEMPLATE_CACHE[token] = proc
+-  return proc
+-}
++      for(var i=0; i<numObjs; ++i) {
++        var obj = objects[i]
++        if(obj.isTransparent && obj.isTransparent()) {
++          obj.drawTransparent(cameraParams)
++        }
++      }
+ 
+-function gradient(out, inp, bc) {
+-  if(Array.isArray(bc)) {
+-    if(bc.length !== inp.dimension) {
+-      throw new Error('ndarray-gradient: invalid boundary conditions')
++      //Unbind framebuffer
++      gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++
++      //Draw composite pass
++      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
++      gl.disable(gl.DEPTH_TEST)
++      accumShader.bind()
++      accumBuffer.color[0].bind(0)
++      accumShader.uniforms.accumBuffer = 0
++      drawTriangle(gl)
++
++      //Turn off blending
++      gl.disable(gl.BLEND)
+     }
+-  } else if(typeof bc === 'string') {
+-    bc = dup(inp.dimension, bc)
+-  } else {
+-    bc = dup(inp.dimension, 'clamp')
+-  }
+-  if(out.dimension !== inp.dimension + 1) {
+-    throw new Error('ndarray-gradient: output dimension must be +1 input dimension')
+-  }
+-  if(out.shape[inp.dimension] !== inp.dimension) {
+-    throw new Error('ndarray-gradient: output shape must match input shape')
+-  }
+-  for(var i=0; i<inp.dimension; ++i) {
+-    if(out.shape[i] !== inp.shape[i]) {
+-      throw new Error('ndarray-gradient: shape mismatch')
++
++    //Clear dirty flags
++    dirty = false
++    for(var i=0; i<numObjs; ++i) {
++      objects[i].dirty = false
+     }
+   }
+-  if(inp.size === 0) {
+-    return out
++
++
++  //Draw the whole scene
++  function render() {
++    if(stopped || scene.contextLost) {
++      return
++    }
++    requestAnimationFrame(render)
++    redraw()
+   }
+-  if(inp.dimension <= 0) {
+-    out.set(0)
+-    return out
++  render()
++
++  //Force redraw of whole scene
++  scene.redraw = function() {
++    if(stopped) {
++      return
++    }
++    dirty = true
++    redraw()
+   }
+-  var cached = generateGradient(bc)
+-  return cached(out, inp)
++
++  return scene
+ }
+-},{"cwise-compiler":115,"dup":121}],225:[function(require,module,exports){
+-"use strict"
+ 
+-var ndarray = require("ndarray")
+-var do_convert = require("./doConvert.js")
++},{"./lib/shader":174,"3d-view-controls":21,"a-big-triangle":23,"gl-axes3d":113,"gl-axes3d/properties":120,"gl-fbo":128,"gl-mat4/perspective":145,"gl-select-static":189,"gl-spikes3d":199,"mouse-change":371}],176:[function(require,module,exports){
++module.exports = slerp
+ 
+-module.exports = function convert(arr, result) {
+-  var shape = [], c = arr, sz = 1
+-  while(c instanceof Array) {
+-    shape.push(c.length)
+-    sz *= c.length
+-    c = c[0]
+-  }
+-  if(shape.length === 0) {
+-    return ndarray()
+-  }
+-  if(!result) {
+-    result = ndarray(new Float64Array(sz), shape)
++/**
++ * Performs a spherical linear interpolation between two quat
++ *
++ * @param {quat} out the receiving quaternion
++ * @param {quat} a the first operand
++ * @param {quat} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {quat} out
++ */
++function slerp (out, a, b, t) {
++  // benchmarks:
++  //    http://jsperf.com/quaternion-slerp-implementations
++
++  var ax = a[0], ay = a[1], az = a[2], aw = a[3],
++    bx = b[0], by = b[1], bz = b[2], bw = b[3]
++
++  var omega, cosom, sinom, scale0, scale1
++
++  // calc cosine
++  cosom = ax * bx + ay * by + az * bz + aw * bw
++  // adjust signs (if necessary)
++  if (cosom < 0.0) {
++    cosom = -cosom
++    bx = -bx
++    by = -by
++    bz = -bz
++    bw = -bw
+   }
+-  do_convert(result, arr)
+-  return result
+-}
++  // calculate coefficients
++  if ((1.0 - cosom) > 0.000001) {
++    // standard case (slerp)
++    omega = Math.acos(cosom)
++    sinom = Math.sin(omega)
++    scale0 = Math.sin((1.0 - t) * omega) / sinom
++    scale1 = Math.sin(t * omega) / sinom
++  } else {
++    // "from" and "to" quaternions are very close
++    //  ... so we can do a linear interpolation
++    scale0 = 1.0 - t
++    scale1 = t
++  }
++  // calculate final values
++  out[0] = scale0 * ax + scale1 * bx
++  out[1] = scale0 * ay + scale1 * by
++  out[2] = scale0 * az + scale1 * bz
++  out[3] = scale0 * aw + scale1 * bw
+ 
+-},{"./doConvert.js":226,"ndarray":433}],226:[function(require,module,exports){
+-module.exports=require('cwise-compiler')({"args":["array","scalar","index"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{\nvar _inline_1_v=_inline_1_arg1_,_inline_1_i\nfor(_inline_1_i=0;_inline_1_i<_inline_1_arg2_.length-1;++_inline_1_i) {\n_inline_1_v=_inline_1_v[_inline_1_arg2_[_inline_1_i]]\n}\n_inline_1_arg0_=_inline_1_v[_inline_1_arg2_[_inline_1_arg2_.length-1]]\n}","args":[{"name":"_inline_1_arg0_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_1_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_1_arg2_","lvalue":false,"rvalue":true,"count":4}],"thisVars":[],"localVars":["_inline_1_i","_inline_1_v"]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"funcName":"convert","blockSize":64})
++  return out
++}
+ 
+-},{"cwise-compiler":115}],227:[function(require,module,exports){
++},{}],177:[function(require,module,exports){
+ 'use strict'
+ 
+-module.exports = createSurfacePlot
+ 
+-var bits = require('bit-twiddle')
+-var createBuffer = require('gl-buffer')
+-var createVAO = require('gl-vao')
+-var createTexture = require('gl-texture2d')
+-var pool = require('typedarray-pool')
+-var colormap = require('colormap')
+-var ops = require('ndarray-ops')
+-var pack = require('ndarray-pack')
+-var ndarray = require('ndarray')
+-var surfaceNets = require('surface-nets')
+-var multiply = require('gl-mat4/multiply')
+-var invert = require('gl-mat4/invert')
+-var bsearch = require('binary-search-bounds')
+-var gradient = require('ndarray-gradient')
+-var shaders = require('./lib/shaders')
+ 
+-var createShader = shaders.createShader
+-var createContourShader = shaders.createContourShader
+-var createPickShader = shaders.createPickShader
+-var createPickContourShader = shaders.createPickContourShader
++module.exports = {
++  vertex:       "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  fragColor = color;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
++  fragment:     "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
++  pickVertex:   "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 id;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\nuniform vec4 pickOffset;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",
++  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"
++}
+ 
+-var SURFACE_VERTEX_SIZE = 4 * (4 + 3 + 3)
++},{}],178:[function(require,module,exports){
++'use strict'
+ 
+-var IDENTITY = [
+-  1, 0, 0, 0,
+-  0, 1, 0, 0,
+-  0, 0, 1, 0,
+-  0, 0, 0, 1 ]
++module.exports = createFancyScatter2D
+ 
+-var QUAD = [
+-  [0, 0],
+-  [0, 1],
+-  [1, 0],
+-  [1, 1],
+-  [1, 0],
+-  [0, 1]
+-]
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var textCache = require('text-cache')
++var pool = require('typedarray-pool')
++var vectorizeText = require('vectorize-text')
++var shaders = require('./lib/shaders')
+ 
+-var PERMUTATIONS = [
+-  [0, 0, 0, 0, 0, 0, 0, 0, 0],
+-  [0, 0, 0, 0, 0, 0, 0, 0, 0],
+-  [0, 0, 0, 0, 0, 0, 0, 0, 0]
+-]
++var BOUNDARIES = {}
+ 
+-;(function () {
+-  for (var i = 0; i < 3; ++i) {
+-    var p = PERMUTATIONS[i]
+-    var u = (i + 1) % 3
+-    var v = (i + 2) % 3
+-    p[u + 0] = 1
+-    p[v + 3] = 1
+-    p[i + 6] = 1
++function getBoundary(glyph) {
++  if(glyph in BOUNDARIES) {
++    return BOUNDARIES[glyph]
+   }
+-})()
+ 
+-function SurfacePickResult (position, index, uv, level, dataCoordinate) {
+-  this.position = position
+-  this.index = index
+-  this.uv = uv
+-  this.level = level
+-  this.dataCoordinate = dataCoordinate
+-}
++  var polys = vectorizeText(glyph, {
++    polygons: true,
++    font: 'sans-serif',
++    textAlign: 'left',
++    textBaseline: 'alphabetic'
++  })
+ 
+-var N_COLORS = 265
++  var coords  = []
++  var normals = []
+ 
+-function genColormap (name) {
+-  var x = pack([colormap({
+-    colormap: name,
+-    nshades: N_COLORS,
+-    format: 'rgba'
+-  }).map(function (c) {
+-    return [c[0], c[1], c[2], 255 * c[3]]
+-  })])
+-  ops.divseq(x, 255.0)
+-  return x
+-}
++  polys.forEach(function(loops) {
++    loops.forEach(function(loop) {
++      for(var i=0; i<loop.length; ++i) {
++        var a = loop[(i + loop.length - 1) % loop.length]
++        var b = loop[i]
++        var c = loop[(i + 1) % loop.length]
++        var d = loop[(i + 2) % loop.length]
+ 
+-function SurfacePlot (
+-  gl,
+-  shape,
+-  bounds,
+-  shader,
+-  pickShader,
+-  coordinates,
+-  vao,
+-  colorMap,
+-  contourShader,
+-  contourPickShader,
+-  contourBuffer,
+-  contourVAO,
+-  dynamicBuffer,
+-  dynamicVAO) {
+-  this.gl = gl
+-  this.shape = shape
+-  this.bounds = bounds
+-  this.intensityBounds = [];
++        var dx = b[0] - a[0]
++        var dy = b[1] - a[1]
++        var dl = Math.sqrt(dx*dx + dy*dy)
++        dx /= dl
++        dy /= dl
+ 
+-  this._shader = shader
+-  this._pickShader = pickShader
+-  this._coordinateBuffer = coordinates
+-  this._vao = vao
+-  this._colorMap = colorMap
++        coords.push(a[0], a[1] + 1.4)
++        normals.push(dy, -dx)
++        coords.push(a[0], a[1] + 1.4)
++        normals.push(-dy, dx)
++        coords.push(b[0], b[1] + 1.4)
++        normals.push(-dy, dx)
+ 
+-  this._contourShader = contourShader
+-  this._contourPickShader = contourPickShader
+-  this._contourBuffer = contourBuffer
+-  this._contourVAO = contourVAO
+-  this._contourOffsets = [[], [], []]
+-  this._contourCounts = [[], [], []]
+-  this._vertexCount = 0
++        coords.push(b[0], b[1] + 1.4)
++        normals.push(-dy, dx)
++        coords.push(a[0], a[1] + 1.4)
++        normals.push(dy, -dx)
++        coords.push(b[0], b[1] + 1.4)
++        normals.push(dy, -dx)
+ 
+-  this._pickResult = new SurfacePickResult([0, 0, 0], [0, 0], [0, 0], [0, 0, 0], [0, 0, 0])
++        var ex = d[0] - c[0]
++        var ey = d[1] - c[1]
++        var el = Math.sqrt(ex*ex + ey*ey)
++        ex /= el
++        ey /= el
+ 
+-  this._dynamicBuffer = dynamicBuffer
+-  this._dynamicVAO = dynamicVAO
+-  this._dynamicOffsets = [0, 0, 0]
+-  this._dynamicCounts = [0, 0, 0]
++        coords.push(b[0], b[1]+1.4)
++        normals.push(dy, -dx)
++        coords.push(b[0], b[1]+1.4)
++        normals.push(-dy, dx)
++        coords.push(c[0], c[1]+1.4)
++        normals.push(-ey, ex)
+ 
+-  this.contourWidth = [ 1, 1, 1 ]
+-  this.contourLevels = [[1], [1], [1]]
+-  this.contourTint = [0, 0, 0]
+-  this.contourColor = [[0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1]]
++        coords.push(c[0], c[1]+1.4)
++        normals.push(-ey, ex)
++        coords.push(b[0], b[1]+1.4)
++        normals.push(ey, -ex)
++        coords.push(c[0], c[1]+1.4)
++        normals.push(ey, -ex)
++      }
++    })
++  })
+ 
+-  this.showContour = true
+-  this.showSurface = true
++  var bounds = [Infinity, Infinity, -Infinity, -Infinity]
++  for(var i=0; i<coords.length; i+=2) {
++    for(var j=0; j<2; ++j) {
++      bounds[j]   = Math.min(bounds[j],   coords[i+j])
++      bounds[2+j] = Math.max(bounds[2+j], coords[i+j])
++    }
++  }
+ 
+-  this.enableHighlight = [true, true, true]
+-  this.highlightColor = [[0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1]]
+-  this.highlightTint = [ 1, 1, 1 ]
+-  this.highlightLevel = [-1, -1, -1]
++  return BOUNDARIES[glyph] = {
++    coords:  coords,
++    normals: normals,
++    bounds:  bounds
++  }
++}
+ 
+-  // Dynamic contour options
+-  this.enableDynamic = [ true, true, true ]
+-  this.dynamicLevel = [ NaN, NaN, NaN ]
+-  this.dynamicColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ]
+-  this.dynamicTint = [ 1, 1, 1 ]
+-  this.dynamicWidth = [ 1, 1, 1 ]
+ 
+-  this.axesBounds = [[Infinity, Infinity, Infinity], [-Infinity, -Infinity, -Infinity]]
+-  this.surfaceProject = [ false, false, false ]
+-  this.contourProject = [[ false, false, false ],
+-    [ false, false, false ],
+-    [ false, false, false ]]
++var VERTEX_SIZE       = 9
++var VERTEX_SIZE_BYTES = VERTEX_SIZE * 4
+ 
+-  this.colorBounds = [ false, false ]
++function GLScatterFancy(
++    plot,
++    shader,
++    pickShader,
++    positionBuffer,
++    offsetBuffer,
++    colorBuffer,
++    idBuffer) {
++  this.plot           = plot
++  this.shader         = shader
++  this.pickShader     = pickShader
++  this.positionBuffer = positionBuffer
++  this.offsetBuffer   = offsetBuffer
++  this.colorBuffer    = colorBuffer
++  this.idBuffer       = idBuffer
++  this.bounds         = [Infinity, Infinity, -Infinity, -Infinity]
++  this.numPoints      = 0
++  this.numVertices    = 0
++  this.pickOffset     = 0
++  this.points         = null
++}
+ 
+-  // Store xyz fields, need this for picking
+-  this._field = [
+-    ndarray(pool.mallocFloat(1024), [0, 0]),
+-    ndarray(pool.mallocFloat(1024), [0, 0]),
+-    ndarray(pool.mallocFloat(1024), [0, 0]) ]
++var proto = GLScatterFancy.prototype
+ 
+-  this.pickId = 1
+-  this.clipBounds = [[-Infinity, -Infinity, -Infinity], [Infinity, Infinity, Infinity]]
++;(function() {
++  var MATRIX = [
++    1, 0, 0,
++    0, 1, 0,
++    0, 0, 1
++  ];
+ 
+-  this.snapToData = false
++  var PIXEL_SCALE = [1, 1]
+ 
+-  this.opacity = 1.0
++  function calcScales() {
++    var plot          = this.plot
++    var bounds        = this.bounds
+ 
+-  this.lightPosition = [10, 10000, 0]
+-  this.ambientLight = 0.8
+-  this.diffuseLight = 0.8
+-  this.specularLight = 2.0
+-  this.roughness = 0.5
+-  this.fresnel = 1.5
++    var viewBox     = plot.viewBox
++    var dataBox     = plot.dataBox
++    var pixelRatio  = plot.pixelRatio
+ 
+-  this.dirty = true
+-}
++    var boundX  = bounds[2] - bounds[0]
++    var boundY  = bounds[3] - bounds[1]
++    var dataX   = dataBox[2] - dataBox[0]
++    var dataY   = dataBox[3] - dataBox[1]
+ 
+-var proto = SurfacePlot.prototype
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-proto.isTransparent = function () {
+-  return this.opacity < 1
+-}
++    var screenX = (viewBox[2] - viewBox[0])
++    var screenY = (viewBox[3] - viewBox[1])
+ 
+-proto.isOpaque = function () {
+-  if (this.opacity >= 1) {
+-    return true
++    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
++    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY
+   }
+-  for (var i = 0; i < 3; ++i) {
+-    if (this._contourCounts[i].length > 0 || this._dynamicCounts[i] > 0) {
+-      return true
++
++  proto.draw = function() {
++    var plot          = this.plot
++    var shader        = this.shader
++    var numVertices   = this.numVertices
++
++    if(!numVertices) {
++      return
+     }
+-  }
+-  return false
+-}
+ 
+-proto.pickSlots = 1
++    var gl          = plot.gl
+ 
+-proto.setPickBase = function (id) {
+-  this.pickId = id
+-}
++    calcScales.call(this)
+ 
+-var ZERO_VEC = [0, 0, 0]
++    shader.bind()
+ 
+-var PROJECT_DATA = {
+-  showSurface: false,
+-  showContour: false,
+-  projections: [IDENTITY.slice(), IDENTITY.slice(), IDENTITY.slice()],
+-  clipBounds: [
+-    [[0, 0, 0], [0, 0, 0]],
+-    [[0, 0, 0], [0, 0, 0]],
+-    [[0, 0, 0], [0, 0, 0]]]
+-}
++    shader.uniforms.pixelScale = PIXEL_SCALE
++    shader.uniforms.viewTransform = MATRIX
+ 
+-function computeProjectionData (camera, obj) {
+-  var i, j, k
++    this.positionBuffer.bind()
++    shader.attributes.position.pointer()
+ 
+-  // Compute cube properties
+-  var cubeAxis = (obj.axes && obj.axes.lastCubeProps.axis) || ZERO_VEC
++    this.offsetBuffer.bind()
++    shader.attributes.offset.pointer()
+ 
+-  var showSurface = obj.showSurface
+-  var showContour = obj.showContour
++    this.colorBuffer.bind()
++    shader.attributes.color.pointer(gl.UNSIGNED_BYTE, true)
+ 
+-  for (i = 0; i < 3; ++i) {
+-    showSurface = showSurface || obj.surfaceProject[i]
+-    for (j = 0; j < 3; ++j) {
+-      showContour = showContour || obj.contourProject[i][j]
+-    }
++    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
+   }
+ 
+-  for (i = 0; i < 3; ++i) {
+-    // Construct projection onto axis
+-    var axisSquish = PROJECT_DATA.projections[i]
+-    for (j = 0; j < 16; ++j) {
+-      axisSquish[j] = 0
+-    }
+-    for (j = 0; j < 4; ++j) {
+-      axisSquish[5 * j] = 1
++  var PICK_OFFSET = [0,0,0,0]
++
++  proto.drawPick = function(offset) {
++    var plot          = this.plot
++    var shader        = this.pickShader
++    var numVertices   = this.numVertices
++
++    var gl          = plot.gl
++
++    this.pickOffset = offset
++
++    if(!numVertices) {
++      return offset
+     }
+-    axisSquish[5 * i] = 0
+-    axisSquish[12 + i] = obj.axesBounds[+(cubeAxis[i] > 0)][i]
+-    multiply(axisSquish, camera.model, axisSquish)
+ 
+-    var nclipBounds = PROJECT_DATA.clipBounds[i]
+-    for (k = 0; k < 2; ++k) {
+-      for (j = 0; j < 3; ++j) {
+-        nclipBounds[k][j] = camera.clipBounds[k][j]
+-      }
++    for(var i=0; i<4; ++i) {
++      PICK_OFFSET[i] = ((offset>>(i*8)) & 0xff)
+     }
+-    nclipBounds[0][i] = -1e8
+-    nclipBounds[1][i] = 1e8
+-  }
+ 
+-  PROJECT_DATA.showSurface = showSurface
+-  PROJECT_DATA.showContour = showContour
++    calcScales.call(this)
+ 
+-  return PROJECT_DATA
+-}
++    shader.bind()
+ 
+-var UNIFORMS = {
+-  model: IDENTITY,
+-  view: IDENTITY,
+-  projection: IDENTITY,
+-  inverseModel: IDENTITY.slice(),
+-  lowerBound: [0, 0, 0],
+-  upperBound: [0, 0, 0],
+-  colorMap: 0,
+-  clipBounds: [[0, 0, 0], [0, 0, 0]],
+-  height: 0.0,
+-  contourTint: 0,
+-  contourColor: [0, 0, 0, 1],
+-  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
+-  zOffset: -1e-4,
+-  kambient: 1,
+-  kdiffuse: 1,
+-  kspecular: 1,
+-  lightPosition: [1000, 1000, 1000],
+-  eyePosition: [0, 0, 0],
+-  roughness: 1,
+-  fresnel: 1,
+-  opacity: 1
+-}
++    shader.uniforms.pixelScale    = PIXEL_SCALE
++    shader.uniforms.viewTransform = MATRIX
++    shader.uniforms.pickOffset    = PICK_OFFSET
+ 
+-var MATRIX_INVERSE = IDENTITY.slice()
+-var DEFAULT_PERM = [1, 0, 0, 0, 1, 0, 0, 0, 1]
++    this.positionBuffer.bind()
++    shader.attributes.position.pointer()
+ 
+-function drawCore (params, transparent) {
+-  params = params || {}
+-  var gl = this.gl
++    this.offsetBuffer.bind()
++    shader.attributes.offset.pointer()
+ 
+-  gl.disable(gl.CULL_FACE)
++    this.idBuffer.bind()
++    shader.attributes.id.pointer(gl.UNSIGNED_BYTE, false)
+ 
+-  this._colorMap.bind(0)
++    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
+ 
+-  var uniforms = UNIFORMS
+-  uniforms.model = params.model || IDENTITY
+-  uniforms.view = params.view || IDENTITY
+-  uniforms.projection = params.projection || IDENTITY
+-  uniforms.lowerBound = [this.bounds[0][0], this.bounds[0][1], this.colorBounds[0] || this.bounds[0][2]]
+-  uniforms.upperBound = [this.bounds[1][0], this.bounds[1][1], this.colorBounds[1] || this.bounds[1][2]]
+-  uniforms.contourColor = this.contourColor[0]
++    return offset + this.numPoints
++  }
++})()
+ 
+-  uniforms.inverseModel = invert(uniforms.inverseModel, uniforms.model)
++proto.pick = function(x, y, value) {
++  var pickOffset = this.pickOffset
++  var pointCount = this.numPoints
++  if(value < pickOffset || value >= pickOffset + pointCount) {
++    return null
++  }
++  var pointId = value - pickOffset
++  var points   = this.points
++  return {
++    object:     this,
++    pointId:    pointId,
++    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
++  }
++}
+ 
+-  for (var i = 0; i < 2; ++i) {
+-    var clipClamped = uniforms.clipBounds[i]
+-    for (var j = 0; j < 3; ++j) {
+-      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
++proto.update = function(options) {
++  options = options || {}
++
++  var positions     = options.positions    || []
++  var colors        = options.colors       || []
++  var glyphs        = options.glyphs       || []
++  var sizes         = options.sizes        || []
++  var borderWidths  = options.borderWidths || []
++  var borderColors  = options.borderColors || []
++
++  this.points = positions
++
++  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
++  var numVertices = 0
++  for(var i=0; i<glyphs.length; ++i) {
++    numVertices += (
++      textCache('sans-serif', glyphs[i]).data.length +
++      getBoundary(glyphs[i]).coords.length
++    )>> 1
++    for(var j=0; j<2; ++j) {
++      bounds[j]   = Math.min(bounds[j],   positions[2*i+j])
++      bounds[2+j] = Math.max(bounds[2+j], positions[2*i+j])
+     }
+   }
+ 
+-  uniforms.kambient = this.ambientLight
+-  uniforms.kdiffuse = this.diffuseLight
+-  uniforms.kspecular = this.specularLight
++  if(bounds[0] === bounds[2]) {
++    bounds[2] += 1
++  }
++  if(bounds[3] === bounds[1]) {
++    bounds[3] += 1
++  }
+ 
+-  uniforms.roughness = this.roughness
+-  uniforms.fresnel = this.fresnel
+-  uniforms.opacity = this.opacity
++  var sx = 1/(bounds[2] - bounds[0])
++  var sy = 1/(bounds[3] - bounds[1])
++  var tx = bounds[0]
++  var ty = bounds[1]
++
++  var v_position = pool.mallocFloat32(2 * numVertices)
++  var v_offset   = pool.mallocFloat32(2 * numVertices)
++  var v_color    = pool.mallocUint8(4 * numVertices)
++  var v_ids      = pool.mallocUint32(numVertices)
++  var ptr = 0
++
++  for(var i=0; i<glyphs.length; ++i) {
++    var glyph = textCache('sans-serif', glyphs[i])
++    var border = getBoundary(glyphs[i])
++    var x = sx * (positions[2*i]   - tx)
++    var y = sy * (positions[2*i+1] - ty)
++    var s = sizes[i]
++    var r = colors[4*i]   * 255.0
++    var g = colors[4*i+1] * 255.0
++    var b = colors[4*i+2] * 255.0
++    var a = colors[4*i+3] * 255.0
++
++    var gx = 0.5*(border.bounds[0] + border.bounds[2])
++    var gy = 0.5*(border.bounds[1] + border.bounds[3])
++
++    for(var j=0; j<glyph.data.length; j+=2) {
++      v_position[2*ptr]   = x
++      v_position[2*ptr+1] = y
++      v_offset[2*ptr]     = -s * (glyph.data[j]   - gx)
++      v_offset[2*ptr+1]   = -s * (glyph.data[j+1] - gy)
++      v_color[4*ptr]      = r
++      v_color[4*ptr+1]    = g
++      v_color[4*ptr+2]    = b
++      v_color[4*ptr+3]    = a
++      v_ids[ptr]          = i
+ 
+-  uniforms.height = 0.0
+-  uniforms.permutation = DEFAULT_PERM
++      ptr += 1
++    }
+ 
+-  // Compute camera matrix inverse
+-  var invCameraMatrix = MATRIX_INVERSE
+-  multiply(invCameraMatrix, uniforms.view, uniforms.model)
+-  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
+-  invert(invCameraMatrix, invCameraMatrix)
++    var w = borderWidths[i]
++    r = borderColors[4*i]   * 255.0
++    g = borderColors[4*i+1] * 255.0
++    b = borderColors[4*i+2] * 255.0
++    a = borderColors[4*i+3] * 255.0
+ 
+-  for (i = 0; i < 3; ++i) {
+-    uniforms.eyePosition[i] = invCameraMatrix[12 + i] / invCameraMatrix[15]
+-  }
++    for(var j=0; j<border.coords.length; j+=2) {
++      v_position[2*ptr]   = x
++      v_position[2*ptr+1] = y
++      v_offset[2*ptr]     = -(s*(border.coords[j]  -gx)+w*border.normals[j])
++      v_offset[2*ptr+1]   = -(s*(border.coords[j+1]-gy)+w*border.normals[j+1])
++      v_color[4*ptr]      = r
++      v_color[4*ptr+1]    = g
++      v_color[4*ptr+2]    = b
++      v_color[4*ptr+3]    = a
++      v_ids[ptr]          = i
+ 
+-  var w = invCameraMatrix[15]
+-  for (i = 0; i < 3; ++i) {
+-    w += this.lightPosition[i] * invCameraMatrix[4 * i + 3]
+-  }
+-  for (i = 0; i < 3; ++i) {
+-    var s = invCameraMatrix[12 + i]
+-    for (j = 0; j < 3; ++j) {
+-      s += invCameraMatrix[4 * j + i] * this.lightPosition[j]
++      ptr += 1
+     }
+-    uniforms.lightPosition[i] = s / w
+   }
+ 
+-  var projectData = computeProjectionData(uniforms, this)
++  this.numPoints = glyphs.length
++  this.numVertices = numVertices
+ 
+-  if (projectData.showSurface && (transparent === (this.opacity < 1))) {
+-    // Set up uniforms
+-    this._shader.bind()
+-    this._shader.uniforms = uniforms
++  this.positionBuffer.update(v_position)
++  this.offsetBuffer.update(v_offset)
++  this.colorBuffer.update(v_color)
++  this.idBuffer.update(v_ids)
+ 
+-    // Draw it
+-    this._vao.bind()
++  pool.free(v_position)
++  pool.free(v_offset)
++  pool.free(v_color)
++  pool.free(v_ids)
++}
+ 
+-    if (this.showSurface && this._vertexCount) {
+-      this._vao.draw(gl.TRIANGLES, this._vertexCount)
+-    }
++proto.dispose = function() {
++  this.shader.dispose()
++  this.pickShader.dispose()
++  this.positionBuffer.dispose()
++  this.offsetBuffer.dispose()
++  this.colorBuffer.dispose()
++  this.idBuffer.dispose()
++  this.plot.removeObject(this)
++}
+ 
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      if (!this.surfaceProject[i] || !this.vertexCount) {
+-        continue
+-      }
+-      this._shader.uniforms.model = projectData.projections[i]
+-      this._shader.uniforms.clipBounds = projectData.clipBounds[i]
+-      this._vao.draw(gl.TRIANGLES, this._vertexCount)
+-    }
++function createFancyScatter2D(plot, options) {
++  var gl = plot.gl
+ 
+-    this._vao.unbind()
+-  }
++  var shader      = createShader(gl, shaders.vertex,     shaders.fragment)
++  var pickShader  = createShader(gl, shaders.pickVertex, shaders.pickFragment)
+ 
+-  if (projectData.showContour && !transparent) {
+-    var shader = this._contourShader
++  var positionBuffer  = createBuffer(gl)
++  var offsetBuffer    = createBuffer(gl)
++  var colorBuffer     = createBuffer(gl)
++  var idBuffer        = createBuffer(gl)
+ 
+-    // Don't apply lighting to contours
+-    uniforms.kambient = 1.0
+-    uniforms.kdiffuse = 0.0
+-    uniforms.kspecular = 0.0
+-    uniforms.opacity = 1.0
++  var scatter = new GLScatterFancy(
++    plot,
++    shader,
++    pickShader,
++    positionBuffer,
++    offsetBuffer,
++    colorBuffer,
++    idBuffer)
+ 
+-    shader.bind()
+-    shader.uniforms = uniforms
++  scatter.update(options)
+ 
+-    // Draw contour lines
+-    var vao = this._contourVAO
+-    vao.bind()
++  plot.addObject(scatter)
+ 
+-    // Draw contour levels
+-    for (i = 0; i < 3; ++i) {
+-      shader.uniforms.permutation = PERMUTATIONS[i]
+-      gl.lineWidth(this.contourWidth[i])
++  return scatter
++}
+ 
+-      for (j = 0; j < this.contourLevels[i].length; ++j) {
+-        if (!this._contourCounts[i][j]) {
+-          continue
+-        }
+-        if (j === this.highlightLevel[i]) {
+-          shader.uniforms.contourColor = this.highlightColor[i]
+-          shader.uniforms.contourTint = this.highlightTint[i]
+-        } else if (j === 0 || (j - 1) === this.highlightLevel[i]) {
+-          shader.uniforms.contourColor = this.contourColor[i]
+-          shader.uniforms.contourTint = this.contourTint[i]
+-        }
+-        shader.uniforms.height = this.contourLevels[i][j]
+-        vao.draw(gl.LINES, this._contourCounts[i][j], this._contourOffsets[i][j])
+-      }
+-    }
++},{"./lib/shaders":177,"gl-buffer":121,"gl-shader":190,"text-cache":441,"typedarray-pool":449,"vectorize-text":460}],179:[function(require,module,exports){
+ 
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      shader.uniforms.model = projectData.projections[i]
+-      shader.uniforms.clipBounds = projectData.clipBounds[i]
+-      for (j = 0; j < 3; ++j) {
+-        if (!this.contourProject[i][j]) {
+-          continue
+-        }
+-        shader.uniforms.permutation = PERMUTATIONS[j]
+-        gl.lineWidth(this.contourWidth[j])
+-        for (var k = 0; k < this.contourLevels[j].length; ++k) {
+-          if (k === this.highlightLevel[j]) {
+-            shader.uniforms.contourColor = this.highlightColor[j]
+-            shader.uniforms.contourTint = this.highlightTint[j]
+-          } else if (k === 0 || (k - 1) === this.highlightLevel[j]) {
+-            shader.uniforms.contourColor = this.contourColor[j]
+-            shader.uniforms.contourTint = this.contourTint[j]
+-          }
+-          shader.uniforms.height = this.contourLevels[j][k]
+-          vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
+-        }
+-      }
+-    }
+ 
+-    // Draw dynamic contours
+-    vao = this._dynamicVAO
+-    vao.bind()
++exports.pointVertex       = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute float weight;\n\nuniform mat3 matrix;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}\n"
++exports.pointFragment     = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}\n"
++exports.pickVertex        = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n"
++exports.pickFragment      = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"
+ 
+-    // Draw contour levels
+-    for (i = 0; i < 3; ++i) {
+-      if (this._dynamicCounts[i] === 0) {
+-        continue
+-      }
++},{}],180:[function(require,module,exports){
++arguments[4][67][0].apply(exports,arguments)
++},{"dup":67}],181:[function(require,module,exports){
++'use strict'
+ 
+-      shader.uniforms.model = uniforms.model
+-      shader.uniforms.clipBounds = uniforms.clipBounds
+-      shader.uniforms.permutation = PERMUTATIONS[i]
+-      gl.lineWidth(this.dynamicWidth[i])
++module.exports = sortLevels
+ 
+-      shader.uniforms.contourColor = this.dynamicColor[i]
+-      shader.uniforms.contourTint = this.dynamicTint[i]
+-      shader.uniforms.height = this.dynamicLevel[i]
+-      vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
++var INSERT_SORT_CUTOFF = 32
+ 
+-      for (j = 0; j < 3; ++j) {
+-        if (!this.contourProject[j][i]) {
+-          continue
+-        }
++function sortLevels(data_levels, data_points, data_ids, data_weights, n0) {
++  if (n0 <= 4*INSERT_SORT_CUTOFF) {
++    insertionSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
++  }
++}
+ 
+-        shader.uniforms.model = projectData.projections[j]
+-        shader.uniforms.clipBounds = projectData.clipBounds[j]
+-        vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
++function insertionSort(left, right, data_levels, data_points, data_ids, data_weights) {
++  for(var i=left+1; i<=right; ++i) {
++    var a_level  = data_levels[i]
++    var a_x      = data_points[2*i]
++    var a_y      = data_points[2*i+1]
++    var a_id     = data_ids[i]
++    var a_weight = data_weights[i]
++
++    var j = i
++    while(j > left) {
++      var b_level = data_levels[j-1]
++      var b_x     = data_points[2*(j-1)]
++      if(((b_level - a_level) || (a_x - b_x)) >= 0) {
++        break
+       }
++      data_levels[j]      = b_level
++      data_points[2*j]    = b_x
++      data_points[2*j+1]  = data_points[2*j-1]
++      data_ids[j]         = data_ids[j-1]
++      data_weights[j]     = data_weights[j-1]
++      j -= 1
+     }
+ 
+-    vao.unbind()
++    data_levels[j]     = a_level
++    data_points[2*j]   = a_x
++    data_points[2*j+1] = a_y
++    data_ids[j]        = a_id
++    data_weights[j]    = a_weight
+   }
+ }
+ 
+-proto.draw = function (params) {
+-  return drawCore.call(this, params, false)
+-}
++function swap(i, j, data_levels, data_points, data_ids, data_weights) {
++  var a_level = data_levels[i]
++  var a_x     = data_points[2*i]
++  var a_y     = data_points[2*i+1]
++  var a_id    = data_ids[i]
++  var a_weight = data_weights[i]
+ 
+-proto.drawTransparent = function (params) {
+-  return drawCore.call(this, params, true)
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
++
++  data_levels[j]     = a_level
++  data_points[2*j]   = a_x
++  data_points[2*j+1] = a_y
++  data_ids[j]        = a_id
++  data_weights[j]    = a_weight
+ }
+ 
+-var PICK_UNIFORMS = {
+-  model: IDENTITY,
+-  view: IDENTITY,
+-  projection: IDENTITY,
+-  inverseModel: IDENTITY,
+-  clipBounds: [[0, 0, 0], [0, 0, 0]],
+-  height: 0.0,
+-  shape: [0, 0],
+-  pickId: 0,
+-  lowerBound: [0, 0, 0],
+-  upperBound: [0, 0, 0],
+-  zOffset: 0.0,
+-  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
+-  lightPosition: [0, 0, 0],
+-  eyePosition: [0, 0, 0]
++function move(i, j, data_levels, data_points, data_ids, data_weights) {
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
+ }
+ 
+-proto.drawPick = function (params) {
+-  params = params || {}
+-  var gl = this.gl
+-  gl.disable(gl.CULL_FACE)
++function rotate(i, j, k, data_levels, data_points, data_ids, data_weights) {
++  var a_level = data_levels[i]
++  var a_x     = data_points[2*i]
++  var a_y     = data_points[2*i+1]
++  var a_id    = data_ids[i]
++  var a_weight = data_weights[i]
+ 
+-  var uniforms = PICK_UNIFORMS
+-  uniforms.model = params.model || IDENTITY
+-  uniforms.view = params.view || IDENTITY
+-  uniforms.projection = params.projection || IDENTITY
+-  uniforms.shape = this._field[2].shape
+-  uniforms.pickId = this.pickId / 255.0
+-  uniforms.lowerBound = this.bounds[0]
+-  uniforms.upperBound = this.bounds[1]
+-  uniforms.permutation = DEFAULT_PERM
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
+ 
+-  for (var i = 0; i < 2; ++i) {
+-    var clipClamped = uniforms.clipBounds[i]
+-    for (var j = 0; j < 3; ++j) {
+-      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
+-    }
+-  }
++  data_levels[j]     = data_levels[k]
++  data_points[2*j]   = data_points[2*k]
++  data_points[2*j+1] = data_points[2*k+1]
++  data_ids[j]        = data_ids[k]
++  data_weights[j]    = data_weights[k]
+ 
+-  var projectData = computeProjectionData(uniforms, this)
++  data_levels[k]     = a_level
++  data_points[2*k]   = a_x
++  data_points[2*k+1] = a_y
++  data_ids[k]        = a_id
++  data_weights[k]    = a_weight
++}
+ 
+-  if (projectData.showSurface) {
+-    // Set up uniforms
+-    this._pickShader.bind()
+-    this._pickShader.uniforms = uniforms
++function shufflePivot(
++  i, j,
++  a_level, a_x, a_y, a_id, a_weight,
++  data_levels, data_points, data_ids, data_weights) {
+ 
+-    // Draw it
+-    this._vao.bind()
+-    this._vao.draw(gl.TRIANGLES, this._vertexCount)
++  data_levels[i]     = data_levels[j]
++  data_points[2*i]   = data_points[2*j]
++  data_points[2*i+1] = data_points[2*j+1]
++  data_ids[i]        = data_ids[j]
++  data_weights[i]    = data_weights[j]
+ 
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      if (!this.surfaceProject[i]) {
+-        continue
+-      }
+-      this._pickShader.uniforms.model = projectData.projections[i]
+-      this._pickShader.uniforms.clipBounds = projectData.clipBounds[i]
+-      this._vao.draw(gl.TRIANGLES, this._vertexCount)
+-    }
++  data_levels[j]     = a_level
++  data_points[2*j]   = a_x
++  data_points[2*j+1] = a_y
++  data_ids[j]        = a_id
++  data_weights[j]    = a_weight
++}
+ 
+-    this._vao.unbind()
++function compare(i, j, data_levels, data_points, data_ids) {
++  return ((data_levels[i] - data_levels[j]) ||
++          (data_points[2*j] - data_points[2*i]) ||
++          (data_ids[i] - data_ids[j])) < 0
++}
++
++function comparePivot(i, level, x, y, id, data_levels, data_points, data_ids) {
++  return ((level - data_levels[i]) ||
++          (data_points[2*i] - x) ||
++          (id - data_ids[i])) < 0
++}
++
++function quickSort(left, right, data_levels, data_points, data_ids, data_weights) {
++  var sixth = (right - left + 1) / 6 | 0,
++      index1 = left + sixth,
++      index5 = right - sixth,
++      index3 = left + right >> 1,
++      index2 = index3 - sixth,
++      index4 = index3 + sixth,
++      el1 = index1,
++      el2 = index2,
++      el3 = index3,
++      el4 = index4,
++      el5 = index5,
++      less = left + 1,
++      great = right - 1,
++      tmp = 0
++  if(compare(el1, el2, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el1
++    el1 = el2
++    el2 = tmp
++  }
++  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
++  }
++  if(compare(el1, el3, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el1
++    el1 = el3
++    el3 = tmp
++  }
++  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el1, el4, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el1
++    el1 = el4
++    el4 = tmp
++  }
++  if(compare(el3, el4, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el3
++    el3 = el4
++    el4 = tmp
++  }
++  if(compare(el2, el5, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el2
++    el2 = el5
++    el5 = tmp
++  }
++  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el2
++    el2 = el3
++    el3 = tmp
++  }
++  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
++    tmp = el4
++    el4 = el5
++    el5 = tmp
+   }
+ 
+-  if (projectData.showContour) {
+-    var shader = this._contourPickShader
++  var pivot1_level  = data_levels[el2]
++  var pivot1_x      = data_points[2*el2]
++  var pivot1_y      = data_points[2*el2+1]
++  var pivot1_id     = data_ids[el2]
++  var pivot1_weight = data_weights[el2]
+ 
+-    shader.bind()
+-    shader.uniforms = uniforms
++  var pivot2_level  = data_levels[el4]
++  var pivot2_x      = data_points[2*el4]
++  var pivot2_y      = data_points[2*el4+1]
++  var pivot2_id     = data_ids[el4]
++  var pivot2_weight = data_weights[el4]
+ 
+-    var vao = this._contourVAO
+-    vao.bind()
++  var ptr0 = el1
++  var ptr2 = el3
++  var ptr4 = el5
++  var ptr5 = index1
++  var ptr6 = index3
++  var ptr7 = index5
+ 
+-    for (j = 0; j < 3; ++j) {
+-      gl.lineWidth(this.contourWidth[j])
+-      shader.uniforms.permutation = PERMUTATIONS[j]
+-      for (i = 0; i < this.contourLevels[j].length; ++i) {
+-        if (this._contourCounts[j][i]) {
+-          shader.uniforms.height = this.contourLevels[j][i]
+-          vao.draw(gl.LINES, this._contourCounts[j][i], this._contourOffsets[j][i])
+-        }
+-      }
+-    }
++  var level_x = data_levels[ptr0]
++  var level_y = data_levels[ptr2]
++  var level_z = data_levels[ptr4]
++  data_levels[ptr5] = level_x
++  data_levels[ptr6] = level_y
++  data_levels[ptr7] = level_z
+ 
+-    // Draw projections of surface
+-    for (i = 0; i < 3; ++i) {
+-      shader.uniforms.model = projectData.projections[i]
+-      shader.uniforms.clipBounds = projectData.clipBounds[i]
++  for (var i1 = 0; i1 < 2; ++i1) {
++    var x = data_points[2*ptr0+i1]
++    var y = data_points[2*ptr2+i1]
++    var z = data_points[2*ptr4+i1]
++    data_points[2*ptr5+i1] = x
++    data_points[2*ptr6+i1] = y
++    data_points[2*ptr7+i1] = z
++  }
+ 
+-      for (j = 0; j < 3; ++j) {
+-        if (!this.contourProject[i][j]) {
+-          continue
+-        }
++  var id_x = data_ids[ptr0]
++  var id_y = data_ids[ptr2]
++  var id_z = data_ids[ptr4]
++  data_ids[ptr5] = id_x
++  data_ids[ptr6] = id_y
++  data_ids[ptr7] = id_z
+ 
+-        shader.uniforms.permutation = PERMUTATIONS[j]
+-        gl.lineWidth(this.contourWidth[j])
+-        for (var k = 0; k < this.contourLevels[j].length; ++k) {
+-          if (this._contourCounts[j][k]) {
+-            shader.uniforms.height = this.contourLevels[j][k]
+-            vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
++  var weight_x = data_weights[ptr0]
++  var weight_y = data_weights[ptr2]
++  var weight_z = data_weights[ptr4]
++  data_weights[ptr5] = weight_x
++  data_weights[ptr6] = weight_y
++  data_weights[ptr7] = weight_z
++
++  move(index2, left,  data_levels, data_points, data_ids, data_weights)
++  move(index4, right, data_levels, data_points, data_ids, data_weights)
++  for (var k = less; k <= great; ++k) {
++    if (comparePivot(k,
++        pivot1_level, pivot1_x, pivot1_y, pivot1_id,
++        data_levels, data_points, data_ids)) {
++      if (k !== less) {
++        swap(k, less, data_levels, data_points, data_ids, data_weights)
++      }
++      ++less;
++    } else {
++      if (!comparePivot(k,
++          pivot2_level, pivot2_x, pivot2_y, pivot2_id,
++          data_levels, data_points, data_ids)) {
++        while (true) {
++          if (!comparePivot(great,
++              pivot2_level, pivot2_x, pivot2_y, pivot2_id,
++              data_levels, data_points, data_ids)) {
++            if (--great < k) {
++              break;
++            }
++            continue;
++          } else {
++            if (comparePivot(great,
++                pivot1_level, pivot1_x, pivot1_y, pivot1_id,
++                data_levels, data_points, data_ids)) {
++              rotate(k, less, great, data_levels, data_points, data_ids, data_weights)
++              ++less;
++              --great;
++            } else {
++              swap(k, great, data_levels, data_points, data_ids, data_weights)
++              --great;
++            }
++            break;
+           }
+         }
+       }
+     }
+-
+-    vao.unbind()
+   }
+-}
+-
+-proto.pick = function (selection) {
+-  if (!selection) {
+-    return null
++  shufflePivot(left, less-1, pivot1_level, pivot1_x, pivot1_y, pivot1_id, pivot1_weight, data_levels, data_points, data_ids, data_weights)
++  shufflePivot(right, great+1, pivot2_level, pivot2_x, pivot2_y, pivot2_id, pivot2_weight, data_levels, data_points, data_ids, data_weights)
++  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
++    insertionSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
+   }
+-
+-  if (selection.id !== this.pickId) {
+-    return null
++  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
++    insertionSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
+   }
++  if (great - less <= INSERT_SORT_CUTOFF) {
++    insertionSort(less, great, data_levels, data_points, data_ids, data_weights)
++  } else {
++    quickSort(less, great, data_levels, data_points, data_ids, data_weights)
++  }
++}
+ 
+-  var shape = this._field[2].shape
+-
+-  var result = this._pickResult
+-
+-  // Compute uv coordinate
+-  var x = shape[0] * (selection.value[0] + (selection.value[2] >> 4) / 16.0) / 255.0
+-  var ix = Math.floor(x)
+-  var fx = x - ix
+-
+-  var y = shape[1] * (selection.value[1] + (selection.value[2] & 15) / 16.0) / 255.0
+-  var iy = Math.floor(y)
+-  var fy = y - iy
+-
+-  ix += 1
+-  iy += 1
++},{}],182:[function(require,module,exports){
++'use strict'
+ 
+-  // Compute xyz coordinate
+-  var pos = result.position
+-  pos[0] = pos[1] = pos[2] = 0
+-  for (var dx = 0; dx < 2; ++dx) {
+-    var s = dx ? fx : 1.0 - fx
+-    for (var dy = 0; dy < 2; ++dy) {
+-      var t = dy ? fy : 1.0 - fy
++var pool = require('typedarray-pool')
+ 
+-      var r = ix + dx
+-      var c = iy + dy
+-      var w = s * t
++var sortLevels = require('./lib/sort')
+ 
+-      for (var i = 0; i < 3; ++i) {
+-        pos[i] += this._field[i].get(r, c) * w
+-      }
+-    }
+-  }
++module.exports = snapPoints
+ 
+-  // Find closest level
+-  var levelIndex = this._pickResult.level
+-  for (var j = 0; j < 3; ++j) {
+-    levelIndex[j] = bsearch.le(this.contourLevels[j], pos[j])
+-    if (levelIndex[j] < 0) {
+-      if (this.contourLevels[j].length > 0) {
+-        levelIndex[j] = 0
+-      }
+-    } else if (levelIndex[j] < this.contourLevels[j].length - 1) {
+-      var a = this.contourLevels[j][levelIndex[j]]
+-      var b = this.contourLevels[j][levelIndex[j] + 1]
+-      if (Math.abs(a - pos[j]) > Math.abs(b - pos[j])) {
+-        levelIndex[j] += 1
++function partition(points, ids, start, end, lox, loy, hix, hiy) {
++  var mid = start
++  for(var i=start; i<end; ++i) {
++    var x  = points[2*i]
++    var y  = points[2*i+1]
++    var s  = ids[i]
++    if(lox <= x && x <= hix &&
++       loy <= y && y <= hiy) {
++      if(i === mid) {
++        mid += 1
++      } else {
++        points[2*i]     = points[2*mid]
++        points[2*i+1]   = points[2*mid+1]
++        ids[i]          = ids[mid]
++        points[2*mid]   = x
++        points[2*mid+1] = y
++        ids[mid]        = s
++        mid += 1
+       }
+     }
+   }
+-
+-  result.index[0] = fx < 0.5 ? ix : (ix + 1)
+-  result.index[1] = fy < 0.5 ? iy : (iy + 1)
+-
+-  result.uv[0] = x / shape[0]
+-  result.uv[1] = y / shape[1]
+-
+-  for (i = 0; i < 3; ++i) {
+-    result.dataCoordinate[i] = this._field[i].get(result.index[0], result.index[1])
+-  }
+-
+-  return result
+-}
+-
+-function padField (nfield, field) {
+-  var shape = field.shape.slice()
+-  var nshape = nfield.shape.slice()
+-
+-  // Center
+-  ops.assign(nfield.lo(1, 1).hi(shape[0], shape[1]), field)
+-
+-  // Edges
+-  ops.assign(nfield.lo(1).hi(shape[0], 1),
+-    field.hi(shape[0], 1))
+-  ops.assign(nfield.lo(1, nshape[1] - 1).hi(shape[0], 1),
+-    field.lo(0, shape[1] - 1).hi(shape[0], 1))
+-  ops.assign(nfield.lo(0, 1).hi(1, shape[1]),
+-    field.hi(1))
+-  ops.assign(nfield.lo(nshape[0] - 1, 1).hi(1, shape[1]),
+-    field.lo(shape[0] - 1))
+-  // Corners
+-  nfield.set(0, 0, field.get(0, 0))
+-  nfield.set(0, nshape[1] - 1, field.get(0, shape[1] - 1))
+-  nfield.set(nshape[0] - 1, 0, field.get(shape[0] - 1, 0))
+-  nfield.set(nshape[0] - 1, nshape[1] - 1, field.get(shape[0] - 1, shape[1] - 1))
++  return mid
+ }
+ 
+-function handleArray (param, ctor) {
+-  if (Array.isArray(param)) {
+-    return [ ctor(param[0]), ctor(param[1]), ctor(param[2]) ]
+-  }
+-  return [ ctor(param), ctor(param), ctor(param) ]
++function SnapInterval(pixelSize, offset, count) {
++  this.pixelSize  = pixelSize
++  this.offset     = offset
++  this.count      = count
+ }
+ 
+-function toColor (x) {
+-  if (Array.isArray(x)) {
+-    if (x.length === 3) {
+-      return [x[0], x[1], x[2], 1]
+-    }
+-    return [x[0], x[1], x[2], x[3]]
++function snapPoints(points, ids, weights, bounds) {
++  var n    = points.length >>> 1
++  if(n < 1) {
++    return []
+   }
+-  return [0, 0, 0, 1]
+-}
+ 
+-function handleColor (param) {
+-  if (Array.isArray(param)) {
+-    if (Array.isArray(param)) {
+-      return [
+-        toColor(param[0]),
+-        toColor(param[1]),
+-        toColor(param[2]) ]
+-    } else {
+-      var c = toColor(param)
+-      return [
+-        c.slice(),
+-        c.slice(),
+-        c.slice() ]
+-    }
++  var lox =  Infinity, loy =  Infinity
++  var hix = -Infinity, hiy = -Infinity
++  for(var i=0; i<n; ++i) {
++    var x = points[2*i]
++    var y = points[2*i+1]
++    lox = Math.min(lox, x)
++    hix = Math.max(hix, x)
++    loy = Math.min(loy, y)
++    hiy = Math.max(hiy, y)
++    ids[i] = i
+   }
+-}
+-
+-proto.update = function (params) {
+-  params = params || {}
+-
+-  this.dirty = true
+ 
+-  if ('contourWidth' in params) {
+-    this.contourWidth = handleArray(params.contourWidth, Number)
+-  }
+-  if ('showContour' in params) {
+-    this.showContour = handleArray(params.showContour, Boolean)
+-  }
+-  if ('showSurface' in params) {
+-    this.showSurface = !!params.showSurface
+-  }
+-  if ('contourTint' in params) {
+-    this.contourTint = handleArray(params.contourTint, Boolean)
+-  }
+-  if ('contourColor' in params) {
+-    this.contourColor = handleColor(params.contourColor)
+-  }
+-  if ('contourProject' in params) {
+-    this.contourProject = handleArray(params.contourProject, function (x) {
+-      return handleArray(x, Boolean)
+-    })
+-  }
+-  if ('surfaceProject' in params) {
+-    this.surfaceProject = params.surfaceProject
+-  }
+-  if ('dynamicColor' in params) {
+-    this.dynamicColor = handleColor(params.dynamicColor)
+-  }
+-  if ('dynamicTint' in params) {
+-    this.dynamicTint = handleArray(params.dynamicTint, Number)
+-  }
+-  if ('dynamicWidth' in params) {
+-    this.dynamicWidth = handleArray(params.dynamicWidth, Number)
+-  }
+-  if ('opacity' in params) {
+-    this.opacity = params.opacity
+-  }
+-  if ('colorBounds' in params) {
+-    this.colorBounds = params.colorBounds
++  if(lox === hix) {
++    hix += 1 + Math.abs(hix)
+   }
+-
+-  var field = params.field || (params.coords && params.coords[2]) || null
+-  var levelsChanged = false
+-
+-  if (!field) {
+-    if (this._field[2].shape[0] || this._field[2].shape[2]) {
+-      field = this._field[2].lo(1, 1).hi(this._field[2].shape[0] - 2, this._field[2].shape[1] - 2)
+-    } else {
+-      field = this._field[2].hi(0, 0)
+-    }
++  if(loy === hiy) {
++    hiy += 1 + Math.abs(hix)
+   }
+ 
+-  // Update field
+-  if ('field' in params || 'coords' in params) {
+-    var fsize = (field.shape[0] + 2) * (field.shape[1] + 2)
+-
+-    // Resize if necessary
+-    if (fsize > this._field[2].data.length) {
+-      pool.freeFloat(this._field[2].data)
+-      this._field[2].data = pool.mallocFloat(bits.nextPow2(fsize))
+-    }
++  //Calculate diameter
++  var scaleX = 1.0 / (hix - lox)
++  var scaleY = 1.0 / (hiy - loy)
++  var diam = Math.max(hix - lox, hiy - loy)
+ 
+-    // Pad field
+-    this._field[2] = ndarray(this._field[2].data, [field.shape[0] + 2, field.shape[1] + 2])
+-    padField(this._field[2], field)
++  bounds = bounds || [0,0,0,0]
+ 
+-    // Save shape of field
+-    this.shape = field.shape.slice()
+-    var shape = this.shape
++  bounds[0] = lox
++  bounds[1] = loy
++  bounds[2] = hix
++  bounds[3] = hiy
+ 
+-    // Resize coordinate fields if necessary
+-    for (var i = 0; i < 2; ++i) {
+-      if (this._field[2].size > this._field[i].data.length) {
+-        pool.freeFloat(this._field[i].data)
+-        this._field[i].data = pool.mallocFloat(this._field[2].size)
+-      }
+-      this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2])
+-    }
++  var levels = pool.mallocInt32(n)
++  var ptr = 0
+ 
+-    // Generate x/y coordinates
+-    if (params.coords) {
+-      var coords = params.coords
+-      if (!Array.isArray(coords) || coords.length !== 3) {
+-        throw new Error('gl-surface: invalid coordinates for x/y')
+-      }
+-      for (i = 0; i < 2; ++i) {
+-        var coord = coords[i]
+-        for (j = 0; j < 2; ++j) {
+-          if (coord.shape[j] !== shape[j]) {
+-            throw new Error('gl-surface: coords have incorrect shape')
+-          }
+-        }
+-        padField(this._field[i], coord)
+-      }
+-    } else if (params.ticks) {
+-      var ticks = params.ticks
+-      if (!Array.isArray(ticks) || ticks.length !== 2) {
+-        throw new Error('gl-surface: invalid ticks')
+-      }
+-      for (i = 0; i < 2; ++i) {
+-        var tick = ticks[i]
+-        if (Array.isArray(tick) || tick.length) {
+-          tick = ndarray(tick)
++  function snapRec(x, y, diam, start, end, level) {
++    var diam_2 = diam * 0.5
++    var offset = start + 1
++    var count = end - start
++    weights[ptr] = count
++    levels[ptr++] = level
++    for(var i=0; i<2; ++i) {
++      for(var j=0; j<2; ++j) {
++        var nx = x+i*diam_2
++        var ny = y+j*diam_2
++        var nextOffset = partition(
++            points
++          , ids
++          , offset
++          , end
++          , nx, ny
++          , nx+diam_2, ny+diam_2)
++        if(nextOffset === offset) {
++          continue
+         }
+-        if (tick.shape[0] !== shape[i]) {
+-          throw new Error('gl-surface: invalid tick length')
++        if(nextOffset - offset >= Math.max(0.9 * count, 32)) {
++          var mid = (end + start)>>>1
++          snapRec(nx, ny, diam_2, offset, mid, level+1)
++          offset = mid
+         }
+-        // Make a copy view of the tick array
+-        var tick2 = ndarray(tick.data, shape)
+-        tick2.stride[i] = tick.stride[0]
+-        tick2.stride[i ^ 1] = 0
+-
+-        // Fill in field array
+-        padField(this._field[i], tick2)
+-      }
+-    } else {
+-      for (i = 0; i < 2; ++i) {
+-        var offset = [0, 0]
+-        offset[i] = 1
+-        this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2], offset, 0)
+-      }
+-      this._field[0].set(0, 0, 0)
+-      for (var j = 0; j < shape[0]; ++j) {
+-        this._field[0].set(j + 1, 0, j)
+-      }
+-      this._field[0].set(shape[0] + 1, 0, shape[0] - 1)
+-      this._field[1].set(0, 0, 0)
+-      for (j = 0; j < shape[1]; ++j) {
+-        this._field[1].set(0, j + 1, j)
++        snapRec(nx, ny, diam_2, offset, nextOffset, level+1)
++        offset = nextOffset
+       }
+-      this._field[1].set(0, shape[1] + 1, shape[1] - 1)
+     }
++  }
++  snapRec(lox, loy, diam, 0, n, 0)
++  sortLevels(levels, points, ids, weights, n)
+ 
+-    // Save shape
+-    var fields = this._field
++  var lod         = []
++  var lastLevel   = 0
++  var prevOffset  = n
++  for(var ptr=n-1; ptr>=0; --ptr) {
++    points[2*ptr]   = (points[2*ptr]   - lox) * scaleX
++    points[2*ptr+1] = (points[2*ptr+1] - loy) * scaleY
+ 
+-    // Compute surface normals
+-    var dfields = ndarray(pool.mallocFloat(fields[2].size * 3 * 2), [3, shape[0] + 2, shape[1] + 2, 2])
+-    for (i = 0; i < 3; ++i) {
+-      gradient(dfields.pick(i), fields[i], 'mirror')
++    var level = levels[ptr]
++    if(level === lastLevel) {
++      continue
+     }
+-    var normals = ndarray(pool.mallocFloat(fields[2].size * 3), [shape[0] + 2, shape[1] + 2, 3])
+-    for (i = 0; i < shape[0] + 2; ++i) {
+-      for (j = 0; j < shape[1] + 2; ++j) {
+-        var dxdu = dfields.get(0, i, j, 0)
+-        var dxdv = dfields.get(0, i, j, 1)
+-        var dydu = dfields.get(1, i, j, 0)
+-        var dydv = dfields.get(1, i, j, 1)
+-        var dzdu = dfields.get(2, i, j, 0)
+-        var dzdv = dfields.get(2, i, j, 1)
+-
+-        var nx = dydu * dzdv - dydv * dzdu
+-        var ny = dzdu * dxdv - dzdv * dxdu
+-        var nz = dxdu * dydv - dxdv * dydu
+-
+-        var nl = Math.sqrt(nx * nx + ny * ny + nz * nz)
+-        if (nl < 1e-8) {
+-          nl = Math.max(Math.abs(nx), Math.abs(ny), Math.abs(nz))
+-          if (nl < 1e-8) {
+-            nz = 1.0
+-            ny = nx = 0.0
+-            nl = 1.0
+-          } else {
+-            nl = 1.0 / nl
+-          }
+-        } else {
+-          nl = 1.0 / Math.sqrt(nl)
+-        }
+ 
+-        normals.set(i, j, 0, nx * nl)
+-        normals.set(i, j, 1, ny * nl)
+-        normals.set(i, j, 2, nz * nl)
+-      }
+-    }
+-    pool.free(dfields.data)
++    lod.push(new SnapInterval(
++      diam * Math.pow(0.5, level),
++      ptr+1,
++      prevOffset - (ptr+1)
++    ))
++    prevOffset = ptr+1
+ 
+-    // Initialize surface
+-    var lo = [ Infinity, Infinity, Infinity ]
+-    var hi = [ -Infinity, -Infinity, -Infinity ]
+-    var lo_intensity = Infinity
+-    var hi_intensity = -Infinity
+-    var count = (shape[0] - 1) * (shape[1] - 1) * 6
+-    var tverts = pool.mallocFloat(bits.nextPow2(10 * count))
+-    var tptr = 0
+-    var vertexCount = 0
+-    for (i = 0; i < shape[0] - 1; ++i) {
+-      j_loop:
+-      for (j = 0; j < shape[1] - 1; ++j) {
+-        // Test for NaNs
+-        for (var dx = 0; dx < 2; ++dx) {
+-          for (var dy = 0; dy < 2; ++dy) {
+-            for (var k = 0; k < 3; ++k) {
+-              var f = this._field[k].get(1 + i + dx, 1 + j + dy)
+-              if (isNaN(f) || !isFinite(f)) {
+-                continue j_loop
+-              }
+-            }
+-          }
+-        }
+-        for (k = 0; k < 6; ++k) {
+-          var r = i + QUAD[k][0]
+-          var c = j + QUAD[k][1]
++    lastLevel = level
++  }
+ 
+-          var tx = this._field[0].get(r + 1, c + 1)
+-          var ty = this._field[1].get(r + 1, c + 1)
+-          f = this._field[2].get(r + 1, c + 1)
+-          var vf = f
+-          nx = normals.get(r + 1, c + 1, 0)
+-          ny = normals.get(r + 1, c + 1, 1)
+-          nz = normals.get(r + 1, c + 1, 2)
++  lod.push(new SnapInterval(diam * Math.pow(0.5, level+1), 0, prevOffset))
++  pool.free(levels)
+ 
+-          if (params.intensity) {
+-            vf = params.intensity.get(r, c)
+-          }
++  return lod
++}
+ 
+-          tverts[tptr++] = r
+-          tverts[tptr++] = c
+-          tverts[tptr++] = tx
+-          tverts[tptr++] = ty
+-          tverts[tptr++] = f
+-          tverts[tptr++] = 0
+-          tverts[tptr++] = vf
+-          tverts[tptr++] = nx
+-          tverts[tptr++] = ny
+-          tverts[tptr++] = nz
++},{"./lib/sort":181,"typedarray-pool":449}],183:[function(require,module,exports){
++'use strict'
+ 
+-          lo[0] = Math.min(lo[0], tx)
+-          lo[1] = Math.min(lo[1], ty)
+-          lo[2] = Math.min(lo[2], f)
+-          lo_intensity = Math.min(lo_intensity, vf)
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
++var bsearch = require('binary-search-bounds')
++var snapPoints = require('snap-points-2d')
+ 
+-          hi[0] = Math.max(hi[0], tx)
+-          hi[1] = Math.max(hi[1], ty)
+-          hi[2] = Math.max(hi[2], f)
+-          hi_intensity = Math.max(hi_intensity, vf)
++var pool = require('typedarray-pool')
+ 
+-          vertexCount += 1
+-        }
+-      }
+-    }
++var SHADERS = require('./lib/shader')
+ 
+-    if (params.intensityBounds) {
+-      lo_intensity = +params.intensityBounds[0]
+-      hi_intensity = +params.intensityBounds[1]
+-    }
++module.exports = createScatter2D
+ 
+-    // Scale all vertex intensities
+-    for (i = 6; i < tptr; i += 10) {
+-      tverts[i] = (tverts[i] - lo_intensity) / (hi_intensity - lo_intensity)
+-    }
++function Scatter2D(plot, offsetBuffer, pickBuffer, weightBuffer, shader, pickShader) {
++  this.plot           = plot
++  this.offsetBuffer   = offsetBuffer
++  this.pickBuffer     = pickBuffer
++  this.weightBuffer   = weightBuffer
++  this.shader         = shader
++  this.pickShader     = pickShader
++  this.scales         = []
++  this.size           = 12.0
++  this.borderSize     = 1.0
++  this.pointCount     = 0
++  this.color          = [1,0,0,1]
++  this.borderColor    = [0,0,0,1]
++  this.bounds         = [Infinity,Infinity,-Infinity,-Infinity]
++  this.pickOffset     = 0
++  this.points         = null
++  this.xCoords        = null
++}
+ 
+-    this._vertexCount = vertexCount
+-    this._coordinateBuffer.update(tverts.subarray(0, tptr))
+-    pool.freeFloat(tverts)
+-    pool.free(normals.data)
++var proto = Scatter2D.prototype
+ 
+-    // Update bounds
+-    this.bounds = [lo, hi]
++proto.dispose = function() {
++  this.shader.dispose()
++  this.pickShader.dispose()
++  this.offsetBuffer.dispose()
++  this.pickBuffer.dispose()
++  if(this.xCoords) {
++    pool.free(this.xCoords)
++  }
++  this.plot.removeObject(this)
++}
+ 
+-    // Save intensity
+-    this.intensity = params.intensity || this._field[2]
++proto.update = function(options) {
++  options = options || {}
+ 
+-    if(this.intensityBounds[0] !== lo_intensity || this.intensityBounds[1] !== hi_intensity) {
+-        levelsChanged = true
++  function dflt(opt, value) {
++    if(opt in options) {
++      return options[opt]
+     }
+-
+-    // Save intensity bound
+-    this.intensityBounds = [lo_intensity, hi_intensity]
++    return value
+   }
+ 
+-  // Update level crossings
+-  if ('levels' in params) {
+-    var levels = params.levels
+-    if (!Array.isArray(levels[0])) {
+-      levels = [ [], [], levels ]
+-    } else {
+-      levels = levels.slice()
+-    }
+-    for (i = 0; i < 3; ++i) {
+-      levels[i] = levels[i].slice()
+-      levels.sort(function (a, b) {
+-        return a - b
+-      })
+-    }
+-    change_test:
+-    for (i = 0; i < 3; ++i) {
+-      if (levels[i].length !== this.contourLevels[i].length) {
+-        levelsChanged = true
+-        break
+-      }
+-      for (j = 0; j < levels[i].length; ++j) {
+-        if (levels[i][j] !== this.contourLevels[i][j]) {
+-          levelsChanged = true
+-          break change_test
+-        }
+-      }
+-    }
+-    this.contourLevels = levels
++  this.size         = dflt('size', 12.0)
++  this.color        = dflt('color', [1,0,0,1]).slice()
++  this.borderSize   = dflt('borderSize', 1)
++  this.borderColor  = dflt('borderColor', [0,0,0,1]).slice()
++
++  //Update point data
++  if(this.xCoords) {
++    pool.free(this.xCoords)
++  }
++  var data          = options.positions
++  var packed        = pool.mallocFloat32(data.length)
++  var packedId      = pool.mallocInt32(data.length>>>1)
++  packed.set(data)
++  var packedW       = pool.mallocFloat32(data.length)
++  this.points       = data
++  this.scales       = snapPoints(packed, packedId, packedW, this.bounds)
++  this.offsetBuffer.update(packed)
++  this.pickBuffer.update(packedId)
++  this.weightBuffer.update(packedW)
++  var xCoords      = pool.mallocFloat32(data.length>>>1)
++  for(var i=0,j=0; i<data.length; i+=2,++j) {
++    xCoords[j] = packed[i]
+   }
++  pool.free(packedId)
++  pool.free(packed)
++  pool.free(packedW)
+ 
+-  if (levelsChanged) {
+-    fields = this._field
+-    shape = this.shape
++  this.xCoords = xCoords
+ 
+-    // Update contour lines
+-    var contourVerts = []
++  this.pointCount = data.length >>> 1
++  this.pickOffset = 0
++}
+ 
+-    for (var dim = 0; dim < 3; ++dim) {
+-      levels = this.contourLevels[dim]
+-      var levelOffsets = []
+-      var levelCounts = []
++proto.drawPick = (function() {
++  var MATRIX = [1,0,0,
++                0,1,0,
++                0,0,1]
++  var PICK_VEC4 = [0,0,0,0]
++return function(pickOffset) {
++  var plot          = this.plot
++  var shader        = this.pickShader
++  var scales        = this.scales
++  var offsetBuffer  = this.offsetBuffer
++  var pickBuffer    = this.pickBuffer
++  var bounds        = this.bounds
++  var size          = this.size
++  var borderSize    = this.borderSize
++  var gl            = plot.gl
++  var pixelRatio    = plot.pickPixelRatio
++  var viewBox       = plot.viewBox
++  var dataBox       = plot.dataBox
+ 
+-      var parts = [0, 0, 0]
++  if(this.pointCount === 0) {
++    return pickOffset
++  }
+ 
+-      for (i = 0; i < levels.length; ++i) {
+-        var graph = surfaceNets(this._field[dim], levels[i])
+-        levelOffsets.push((contourVerts.length / 5) | 0)
+-        vertexCount = 0
++  var boundX  = bounds[2] - bounds[0]
++  var boundY  = bounds[3] - bounds[1]
++  var dataX   = dataBox[2] - dataBox[0]
++  var dataY   = dataBox[3] - dataBox[1]
++  var screenX = (viewBox[2] - viewBox[0]) * pixelRatio / plot.pixelRatio
++  var screenY = (viewBox[3] - viewBox[1]) * pixelRatio / plot.pixelRatio
+ 
+-        edge_loop:
+-        for (j = 0; j < graph.cells.length; ++j) {
+-          var e = graph.cells[j]
+-          for (k = 0; k < 2; ++k) {
+-            var p = graph.positions[e[k]]
++  var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
++  var targetScale = pixelSize
+ 
+-            var x = p[0]
+-            var ix = Math.floor(x) | 0
+-            var fx = x - ix
+ 
+-            var y = p[1]
+-            var iy = Math.floor(y) | 0
+-            var fy = y - iy
++  MATRIX[0] = 2.0 * boundX / dataX
++  MATRIX[4] = 2.0 * boundY / dataY
++  MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++  MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-            var hole = false
+-            dd_loop:
+-            for (var dd = 0; dd < 3; ++dd) {
+-              parts[dd] = 0.0
+-              var iu = (dim + dd + 1) % 3
+-              for (dx = 0; dx < 2; ++dx) {
+-                var s = dx ? fx : 1.0 - fx
+-                r = Math.min(Math.max(ix + dx, 0), shape[0]) | 0
+-                for (dy = 0; dy < 2; ++dy) {
+-                  var t = dy ? fy : 1.0 - fy
+-                  c = Math.min(Math.max(iy + dy, 0), shape[1]) | 0
++  this.pickOffset = pickOffset
++  PICK_VEC4[0] = ( pickOffset      & 0xff)
++  PICK_VEC4[1] = ((pickOffset>>8)  & 0xff)
++  PICK_VEC4[2] = ((pickOffset>>16) & 0xff)
++  PICK_VEC4[3] = ((pickOffset>>24) & 0xff)
+ 
+-                  if (dd < 2) {
+-                    f = this._field[iu].get(r, c)
+-                  } else {
+-                    f = (this.intensity.get(r, c) - this.intensityBounds[0]) / (this.intensityBounds[1] - this.intensityBounds[0])
+-                  }
+-                  if (!isFinite(f) || isNaN(f)) {
+-                    hole = true
+-                    break dd_loop
+-                  }
++  shader.bind()
++  shader.uniforms.matrix      = MATRIX
++  shader.uniforms.color       = this.color
++  shader.uniforms.borderColor = this.borderColor
++  shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
++  shader.uniforms.pickOffset  = PICK_VEC4
+ 
+-                  var w = s * t
+-                  parts[dd] += w * f
+-                }
+-              }
+-            }
++  if(this.borderSize === 0) {
++    shader.uniforms.centerFraction = 2.0;
++  } else {
++    shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
++  }
+ 
+-            if (!hole) {
+-              contourVerts.push(parts[0], parts[1], p[0], p[1], parts[2])
+-              vertexCount += 1
+-            } else {
+-              if (k > 0) {
+-                // If we already added first edge, pop off verts
+-                for (var l = 0; l < 5; ++l) {
+-                  contourVerts.pop()
+-                }
+-                vertexCount -= 1
+-              }
+-              continue edge_loop
+-            }
+-          }
+-        }
+-        levelCounts.push(vertexCount)
+-      }
++  offsetBuffer.bind()
++  shader.attributes.position.pointer()
++  pickBuffer.bind()
++  shader.attributes.pickId.pointer(gl.UNSIGNED_BYTE)
+ 
+-      // Store results
+-      this._contourOffsets[dim] = levelOffsets
+-      this._contourCounts[dim] = levelCounts
+-    }
++  var xCoords = this.xCoords
++  var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
++  var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
+ 
+-    var floatBuffer = pool.mallocFloat(contourVerts.length)
+-    for (i = 0; i < contourVerts.length; ++i) {
+-      floatBuffer[i] = contourVerts[i]
++  for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
++    var lod     = scales[scaleNum]
++    if(lod.pixelSize < pixelSize && scaleNum > 1) {
++      continue
+     }
+-    this._contourBuffer.update(floatBuffer)
+-    pool.freeFloat(floatBuffer)
+-  }
+-
+-  if (params.colormap) {
+-    this._colorMap.setPixels(genColormap(params.colormap))
+-  }
+-}
+ 
+-proto.dispose = function () {
+-  this._shader.dispose()
+-  this._vao.dispose()
+-  this._coordinateBuffer.dispose()
+-  this._colorMap.dispose()
+-  this._contourBuffer.dispose()
+-  this._contourVAO.dispose()
+-  this._contourShader.dispose()
+-  this._contourPickShader.dispose()
+-  this._dynamicBuffer.dispose()
+-  this._dynamicVAO.dispose()
+-  for (var i = 0; i < 3; ++i) {
+-    pool.freeFloat(this._field[i].data)
+-  }
+-}
++    var intervalStart = lod.offset
++    var intervalEnd   = lod.count + intervalStart
+ 
+-proto.highlight = function (selection) {
+-  if (!selection) {
+-    this._dynamicCounts = [0, 0, 0]
+-    this.dyanamicLevel = [NaN, NaN, NaN]
+-    this.highlightLevel = [-1, -1, -1]
+-    return
+-  }
++    var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
++    var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
+ 
+-  for (var i = 0; i < 3; ++i) {
+-    if (this.enableHighlight[i]) {
+-      this.highlightLevel[i] = selection.level[i]
+-    } else {
+-      this.highlightLevel[i] = -1
++    if(endOffset > startOffset) {
++      gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
+     }
+   }
+ 
+-  var levels
+-  if (this.snapToData) {
+-    levels = selection.dataCoordinate
+-  } else {
+-    levels = selection.position
+-  }
+-  if ((!this.enableDynamic[0] || levels[0] === this.dynamicLevel[0]) &&
+-    (!this.enableDynamic[1] || levels[1] === this.dynamicLevel[1]) &&
+-    (!this.enableDynamic[2] || levels[2] === this.dynamicLevel[2])) {
+-    return
+-  }
++  return pickOffset + this.pointCount
++}
++})()
+ 
+-  var vertexCount = 0
+-  var shape = this.shape
+-  var scratchBuffer = pool.mallocFloat(12 * shape[0] * shape[1])
++proto.draw = (function() {
++  var MATRIX = [1, 0, 0,
++                0, 1, 0,
++                0, 0, 1]
+ 
+-  for (var d = 0; d < 3; ++d) {
+-    if (!this.enableDynamic[d]) {
+-      this.dynamicLevel[d] = NaN
+-      this._dynamicCounts[d] = 0
+-      continue
++  return function() {
++    var plot          = this.plot
++    var shader        = this.shader
++    var scales        = this.scales
++    var offsetBuffer  = this.offsetBuffer
++    var bounds        = this.bounds
++    var size          = this.size
++    var borderSize    = this.borderSize
++    var gl            = plot.gl
++    var pixelRatio    = plot.pixelRatio
++    var viewBox       = plot.viewBox
++    var dataBox       = plot.dataBox
++
++    if(this.pointCount === 0) {
++      return
+     }
+ 
+-    this.dynamicLevel[d] = levels[d]
++    var boundX  = bounds[2] - bounds[0]
++    var boundY  = bounds[3] - bounds[1]
++    var dataX   = dataBox[2] - dataBox[0]
++    var dataY   = dataBox[3] - dataBox[1]
++    var screenX = viewBox[2] - viewBox[0]
++    var screenY = viewBox[3] - viewBox[1]
+ 
+-    var u = (d + 1) % 3
+-    var v = (d + 2) % 3
++    var pixelSize   = Math.min(dataX / screenX, dataY / screenY)
++    var targetScale = pixelSize
+ 
+-    var f = this._field[d]
+-    var g = this._field[u]
+-    var h = this._field[v]
+-    var intensity = this.intensity
++    MATRIX[0] = 2.0 * boundX / dataX
++    MATRIX[4] = 2.0 * boundY / dataY
++    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
++    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0
+ 
+-    var graph = surfaceNets(f, levels[d])
+-    var edges = graph.cells
+-    var positions = graph.positions
++    shader.bind()
++    shader.uniforms.matrix      = MATRIX
++    shader.uniforms.color       = this.color
++    shader.uniforms.borderColor = this.borderColor
++    shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
++    shader.uniforms.useWeight   = 1
+ 
+-    this._dynamicOffsets[d] = vertexCount
++    if(this.borderSize === 0) {
++      shader.uniforms.centerFraction = 2.0;
++    } else {
++      shader.uniforms.centerFraction = size / (size + borderSize + 1.25)
++    }
+ 
+-    for (i = 0; i < edges.length; ++i) {
+-      var e = edges[i]
+-      for (var j = 0; j < 2; ++j) {
+-        var p = positions[e[j]]
++    offsetBuffer.bind()
++    shader.attributes.position.pointer()
+ 
+-        var x = +p[0]
+-        var ix = x | 0
+-        var jx = Math.min(ix + 1, shape[0]) | 0
+-        var fx = x - ix
+-        var hx = 1.0 - fx
++    this.weightBuffer.bind()
++    shader.attributes.weight.pointer()
+ 
+-        var y = +p[1]
+-        var iy = y | 0
+-        var jy = Math.min(iy + 1, shape[1]) | 0
+-        var fy = y - iy
+-        var hy = 1.0 - fy
++    var xCoords = this.xCoords
++    var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
++    var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX
+ 
+-        var w00 = hx * hy
+-        var w01 = hx * fy
+-        var w10 = fx * hy
+-        var w11 = fx * fy
++    var firstLevel = true
+ 
+-        var cu = w00 * g.get(ix, iy) +
+-          w01 * g.get(ix, jy) +
+-          w10 * g.get(jx, iy) +
+-          w11 * g.get(jx, jy)
++    for(var scaleNum = scales.length-1; scaleNum >= 0; --scaleNum) {
++      var lod     = scales[scaleNum]
++      if(lod.pixelSize < pixelSize && scaleNum > 1) {
++        continue
++      }
+ 
+-        var cv = w00 * h.get(ix, iy) +
+-          w01 * h.get(ix, jy) +
+-          w10 * h.get(jx, iy) +
+-          w11 * h.get(jx, jy)
++      var intervalStart = lod.offset
++      var intervalEnd   = lod.count + intervalStart
+ 
+-        if (isNaN(cu) || isNaN(cv)) {
+-          if (j) {
+-            vertexCount -= 1
+-          }
+-          break
+-        }
++      var startOffset = bsearch.ge(xCoords, xStart, intervalStart, intervalEnd-1)
++      var endOffset   = bsearch.lt(xCoords, xEnd, startOffset, intervalEnd-1)+1
+ 
+-        scratchBuffer[2 * vertexCount + 0] = cu
+-        scratchBuffer[2 * vertexCount + 1] = cv
++      if(endOffset > startOffset) {
++        gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)
++      }
+ 
+-        vertexCount += 1
++      if(firstLevel) {
++        firstLevel = false
++        shader.uniforms.useWeight = 0
+       }
+     }
++  }
++})()
+ 
+-    this._dynamicCounts[d] = vertexCount - this._dynamicOffsets[d]
++proto.pick = function(x, y, value) {
++  var pickOffset = this.pickOffset
++  var pointCount = this.pointCount
++  if(value < pickOffset || value >= pickOffset + pointCount) {
++    return null
++  }
++  var pointId = value - pickOffset
++  var points = this.points
++  return {
++    object:  this,
++    pointId: pointId,
++    dataCoord: [ points[2*pointId], points[2*pointId+1] ]
+   }
++}
+ 
+-  this._dynamicBuffer.update(scratchBuffer.subarray(0, 2 * vertexCount))
+-  pool.freeFloat(scratchBuffer)
++function createScatter2D(plot, options) {
++  var gl     = plot.gl
++  var buffer = createBuffer(gl)
++  var pickBuffer = createBuffer(gl)
++  var weightBuffer = createBuffer(gl)
++  var shader = createShader(gl, SHADERS.pointVertex, SHADERS.pointFragment)
++  var pickShader = createShader(gl, SHADERS.pickVertex, SHADERS.pickFragment)
++
++  var result = new Scatter2D(
++    plot, buffer, pickBuffer, weightBuffer, shader, pickShader)
++  result.update(options)
++
++  //Register with plot
++  plot.addObject(result)
++
++  return result
+ }
+ 
+-function createSurfacePlot (params) {
+-  var gl = params.gl
+-  var shader = createShader(gl)
+-  var pickShader = createPickShader(gl)
+-  var contourShader = createContourShader(gl)
+-  var contourPickShader = createPickContourShader(gl)
++},{"./lib/shader":179,"binary-search-bounds":180,"gl-buffer":121,"gl-shader":190,"snap-points-2d":182,"typedarray-pool":449}],184:[function(require,module,exports){
++"use strict"
+ 
+-  var coordinateBuffer = createBuffer(gl)
+-  var vao = createVAO(gl, [
+-    { buffer: coordinateBuffer,
+-      size: 4,
+-      stride: SURFACE_VERTEX_SIZE,
+-      offset: 0
+-    },
+-    { buffer: coordinateBuffer,
+-      size: 3,
+-      stride: SURFACE_VERTEX_SIZE,
+-      offset: 16
+-    },
+-    {
+-      buffer: coordinateBuffer,
+-      size: 3,
+-      stride: SURFACE_VERTEX_SIZE,
+-      offset: 28
+-    }
+-  ])
++var vectorizeText = require("vectorize-text")
+ 
+-  var contourBuffer = createBuffer(gl)
+-  var contourVAO = createVAO(gl, [
+-    {
+-      buffer: contourBuffer,
+-      size: 4,
+-      stride: 20,
+-      offset: 0
+-    },
+-    {
+-      buffer: contourBuffer,
+-      size: 1,
+-      stride: 20,
+-      offset: 16
+-    }
+-  ])
++module.exports = getGlyph
+ 
+-  var dynamicBuffer = createBuffer(gl)
+-  var dynamicVAO = createVAO(gl, [
+-    {
+-      buffer: dynamicBuffer,
+-      size: 2,
+-      type: gl.FLOAT
+-    }])
++var GLYPH_CACHE = {}
+ 
+-  var cmap = createTexture(gl, 1, N_COLORS, gl.RGBA, gl.UNSIGNED_BYTE)
+-  cmap.minFilter = gl.LINEAR
+-  cmap.magFilter = gl.LINEAR
++function getGlyph(symbol, font) {
++  var fontCache = GLYPH_CACHE[font]
++  if(!fontCache) {
++    fontCache = GLYPH_CACHE[font] = {}
++  }
++  if(symbol in fontCache) {
++    return fontCache[symbol]
++  }
+ 
+-  var surface = new SurfacePlot(
+-    gl,
+-    [0, 0],
+-    [[0, 0, 0], [0, 0, 0]],
+-    shader,
+-    pickShader,
+-    coordinateBuffer,
+-    vao,
+-    cmap,
+-    contourShader,
+-    contourPickShader,
+-    contourBuffer,
+-    contourVAO,
+-    dynamicBuffer,
+-    dynamicVAO)
++  //Get line and triangle meshes for glyph
++  var lineSymbol = vectorizeText(symbol, {
++      textAlign: "center",
++      textBaseline: "middle",
++      lineHeight: 1.0,
++      font: font
++    }) 
++  var triSymbol = vectorizeText(symbol, {
++      triangles: true,
++      textAlign: "center",
++      textBaseline: "middle",
++      lineHeight: 1.0,
++      font: font
++    })
+ 
+-  var nparams = {
+-    levels: [[], [], []]
++  //Calculate bounding box
++  var bounds = [[Infinity,Infinity], [-Infinity,-Infinity]]
++  for(var i=0; i<lineSymbol.positions.length; ++i) {
++    var p = lineSymbol.positions[i]
++    for(var j=0; j<2; ++j) {
++      bounds[0][j] = Math.min(bounds[0][j], p[j])
++      bounds[1][j] = Math.max(bounds[1][j], p[j])
++    }
+   }
+-  for (var id in params) {
+-    nparams[id] = params[id]
++
++  //Save cached symbol
++  return fontCache[symbol] = [triSymbol, lineSymbol, bounds]
++}
++},{"vectorize-text":460}],185:[function(require,module,exports){
++var createShaderWrapper = require('gl-shader')
++
++
++var perspectiveVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\n\nuniform vec4 highlightId;\nuniform float highlightScale;\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   || \n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = 1.0;\n    if(distance(highlightId, id) < 0.0001) {\n      scale = highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1);\n    vec4 viewPosition = view * worldPosition;\n    viewPosition = viewPosition / viewPosition.w;\n    vec4 clipPosition = projection * (viewPosition + scale * vec4(glyph.x, -glyph.y, 0, 0));\n    \n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
++var orthographicVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float highlightScale, pixelRatio;\nuniform vec4 highlightId;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = pixelRatio;\n    if(distance(highlightId.bgr, id.bgr) < 0.001) {\n      scale *= highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1.0);\n    vec4 viewPosition = view * worldPosition;\n    vec4 clipPosition = projection * viewPosition;\n    clipPosition /= clipPosition.w;\n    \n    gl_Position = clipPosition + vec4(screenSize * scale * vec2(glyph.x, -glyph.y), 0.0, 0.0);\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
++var projectionVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform float highlightScale;\nuniform vec4 highlightId;\nuniform vec3 axes[2];\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float scale, pixelRatio;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   ||\n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float lscale = pixelRatio * scale;\n    if(distance(highlightId, id) < 0.0001) {\n      lscale *= highlightScale;\n    }\n\n    vec4 clipCenter   = projection * view * model * vec4(position, 1);\n    vec3 dataPosition = position + 0.5*lscale*(axes[0] * glyph.x + axes[1] * glyph.y) * clipCenter.w * screenSize.y;\n    vec4 clipPosition = projection * view * model * vec4(dataPosition, 1);\n\n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = dataPosition;\n  }\n}\n"
++var drawFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float opacity;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   ||\n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = interpColor * opacity;\n  }\n}\n"
++var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float pickGroup;\n\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   || \n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = vec4(pickGroup, pickId.bgr);\n  }\n}"
++
++var ATTRIBUTES = [
++  {name: 'position', type: 'vec3'},
++  {name: 'color', type: 'vec4'},
++  {name: 'glyph', type: 'vec2'},
++  {name: 'id', type: 'vec4'}
++]
++
++var perspective = {
++    vertex: perspectiveVertSrc,
++    fragment: drawFragSrc,
++    attributes: ATTRIBUTES
++  },
++  ortho = {
++    vertex: orthographicVertSrc,
++    fragment: drawFragSrc,
++    attributes: ATTRIBUTES
++  },
++  project = {
++    vertex: projectionVertSrc,
++    fragment: drawFragSrc,
++    attributes: ATTRIBUTES
++  },
++  pickPerspective = {
++    vertex: perspectiveVertSrc,
++    fragment: pickFragSrc,
++    attributes: ATTRIBUTES
++  },
++  pickOrtho = {
++    vertex: orthographicVertSrc,
++    fragment: pickFragSrc,
++    attributes: ATTRIBUTES
++  },
++  pickProject = {
++    vertex: projectionVertSrc,
++    fragment: pickFragSrc,
++    attributes: ATTRIBUTES
+   }
+-  nparams.colormap = nparams.colormap || 'jet'
+ 
+-  surface.update(nparams)
++function createShader(gl, src) {
++  var shader = createShaderWrapper(gl, src)
++  var attr = shader.attributes
++  attr.position.location = 0
++  attr.color.location = 1
++  attr.glyph.location = 2
++  attr.id.location = 3
++  return shader
++}
+ 
+-  return surface
++exports.createPerspective = function(gl) {
++  return createShader(gl, perspective)
++}
++exports.createOrtho = function(gl) {
++  return createShader(gl, ortho)
++}
++exports.createProject = function(gl) {
++  return createShader(gl, project)
++}
++exports.createPickPerspective = function(gl) {
++  return createShader(gl, pickPerspective)
++}
++exports.createPickOrtho = function(gl) {
++  return createShader(gl, pickOrtho)
++}
++exports.createPickProject = function(gl) {
++  return createShader(gl, pickProject)
+ }
+ 
+-},{"./lib/shaders":222,"binary-search-bounds":223,"bit-twiddle":51,"colormap":106,"gl-buffer":124,"gl-mat4/invert":143,"gl-mat4/multiply":145,"gl-texture2d":228,"gl-vao":232,"ndarray":433,"ndarray-gradient":224,"ndarray-ops":432,"ndarray-pack":225,"surface-nets":452,"typedarray-pool":458}],228:[function(require,module,exports){
++},{"gl-shader":190}],186:[function(require,module,exports){
+ 'use strict'
+ 
+-var ndarray = require('ndarray')
+-var ops     = require('ndarray-ops')
+-var pool    = require('typedarray-pool')
++var createBuffer  = require('gl-buffer')
++var createVAO     = require('gl-vao')
++var pool          = require('typedarray-pool')
++var mat4mult      = require('gl-mat4/multiply')
++var shaders       = require('./lib/shaders')
++var getGlyph      = require('./lib/glyphs')
+ 
+-module.exports = createTexture2D
++var IDENTITY = [1,0,0,0,
++                0,1,0,0,
++                0,0,1,0,
++                0,0,0,1]
+ 
+-var linearTypes = null
+-var filterTypes = null
+-var wrapTypes   = null
++module.exports = createPointCloud
+ 
+-function lazyInitLinearTypes(gl) {
+-  linearTypes = [
+-    gl.LINEAR,
+-    gl.NEAREST_MIPMAP_LINEAR,
+-    gl.LINEAR_MIPMAP_NEAREST,
+-    gl.LINEAR_MIPMAP_NEAREST
+-  ]
+-  filterTypes = [
+-    gl.NEAREST,
+-    gl.LINEAR,
+-    gl.NEAREST_MIPMAP_NEAREST,
+-    gl.NEAREST_MIPMAP_LINEAR,
+-    gl.LINEAR_MIPMAP_NEAREST,
+-    gl.LINEAR_MIPMAP_LINEAR
+-  ]
+-  wrapTypes = [
+-    gl.REPEAT,
+-    gl.CLAMP_TO_EDGE,
+-    gl.MIRRORED_REPEAT
+-  ]
++function transformMat4(x, m) {
++  var x0 = x[0]
++  var x1 = x[1]
++  var x2 = x[2]
++  var x3 = x[3]
++  x[0] = m[0] * x0 + m[4] * x1 + m[8]  * x2 + m[12] * x3
++  x[1] = m[1] * x0 + m[5] * x1 + m[9]  * x2 + m[13] * x3
++  x[2] = m[2] * x0 + m[6] * x1 + m[10] * x2 + m[14] * x3
++  x[3] = m[3] * x0 + m[7] * x1 + m[11] * x2 + m[15] * x3
++  return x
+ }
+ 
+-var convertFloatToUint8 = function(out, inp) {
+-  ops.muls(out, inp, 255.0)
++function project(p, v, m, x) {
++  transformMat4(x, x, m)
++  transformMat4(x, x, v)
++  return transformMat4(x, x, p)
+ }
+ 
+-function reshapeTexture(tex, w, h) {
+-  var gl = tex.gl
+-  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(w < 0 || w > maxSize || h < 0 || h > maxSize) {
+-    throw new Error('gl-texture2d: Invalid texture size')
++function clampVec(v) {
++  var result = new Array(3)
++  for(var i=0; i<3; ++i) {
++    result[i] = Math.min(Math.max(v[i], -1e8), 1e8)
+   }
+-  tex._shape = [w, h]
+-  tex.bind()
+-  gl.texImage2D(gl.TEXTURE_2D, 0, tex.format, w, h, 0, tex.format, tex.type, null)
+-  tex._mipLevels = [0]
+-  return tex
++  return result
+ }
+ 
+-function Texture2D(gl, handle, width, height, format, type) {
+-  this.gl = gl
+-  this.handle = handle
+-  this.format = format
+-  this.type = type
+-  this._shape = [width, height]
+-  this._mipLevels = [0]
+-  this._magFilter = gl.NEAREST
+-  this._minFilter = gl.NEAREST
+-  this._wrapS = gl.CLAMP_TO_EDGE
+-  this._wrapT = gl.CLAMP_TO_EDGE
+-  this._anisoSamples = 1
+-
+-  var parent = this
+-  var wrapVector = [this._wrapS, this._wrapT]
+-  Object.defineProperties(wrapVector, [
+-    {
+-      get: function() {
+-        return parent._wrapS
+-      },
+-      set: function(v) {
+-        return parent.wrapS = v
+-      }
+-    },
+-    {
+-      get: function() {
+-        return parent._wrapT
+-      },
+-      set: function(v) {
+-        return parent.wrapT = v
+-      }
+-    }
+-  ])
+-  this._wrapVector = wrapVector
+-
+-  var shapeVector = [this._shape[0], this._shape[1]]
+-  Object.defineProperties(shapeVector, [
+-    {
+-      get: function() {
+-        return parent._shape[0]
+-      },
+-      set: function(v) {
+-        return parent.width = v
+-      }
+-    },
+-    {
+-      get: function() {
+-        return parent._shape[1]
+-      },
+-      set: function(v) {
+-        return parent.height = v
+-      }
+-    }
+-  ])
+-  this._shapeVector = shapeVector
++function ScatterPlotPickResult(index, position) {
++  this.index = index
++  this.dataCoordinate = this.position = position
+ }
+ 
+-var proto = Texture2D.prototype
++function PointCloud(
++  gl,
++  shader,
++  orthoShader,
++  projectShader,
++  pointBuffer,
++  colorBuffer,
++  glyphBuffer,
++  idBuffer,
++  vao,
++  pickPerspectiveShader,
++  pickOrthoShader,
++  pickProjectShader) {
+ 
+-Object.defineProperties(proto, {
+-  minFilter: {
+-    get: function() {
+-      return this._minFilter
+-    },
+-    set: function(v) {
+-      this.bind()
+-      var gl = this.gl
+-      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
+-        if(!gl.getExtension('OES_texture_float_linear')) {
+-          v = gl.NEAREST
+-        }
+-      }
+-      if(filterTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown filter mode ' + v)
+-      }
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, v)
+-      return this._minFilter = v
+-    }
+-  },
+-  magFilter: {
+-    get: function() {
+-      return this._magFilter
+-    },
+-    set: function(v) {
+-      this.bind()
+-      var gl = this.gl
+-      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
+-        if(!gl.getExtension('OES_texture_float_linear')) {
+-          v = gl.NEAREST
+-        }
+-      }
+-      if(filterTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown filter mode ' + v)
+-      }
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, v)
+-      return this._magFilter = v
+-    }
+-  },
+-  mipSamples: {
+-    get: function() {
+-      return this._anisoSamples
+-    },
+-    set: function(i) {
+-      var psamples = this._anisoSamples
+-      this._anisoSamples = Math.max(i, 1)|0
+-      if(psamples !== this._anisoSamples) {
+-        var ext = gl.getExtension('EXT_texture_filter_anisotropic')
+-        if(ext) {
+-          this.gl.texParameterf(this.gl.TEXTURE_2D, ext.TEXTURE_MAX_ANISOTROPY_EXT, this._anisoSamples)
+-        }
+-      }
+-      return this._anisoSamples
+-    }
+-  },
+-  wrapS: {
+-    get: function() {
+-      return this._wrapS
+-    },
+-    set: function(v) {
+-      this.bind()
+-      if(wrapTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
+-      }
+-      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_S, v)
+-      return this._wrapS = v
+-    }
+-  },
+-  wrapT: {
+-    get: function() {
+-      return this._wrapT
+-    },
+-    set: function(v) {
+-      this.bind()
+-      if(wrapTypes.indexOf(v) < 0) {
+-        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
+-      }
+-      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_T, v)
+-      return this._wrapT = v
+-    }
+-  },
+-  wrap: {
+-    get: function() {
+-      return this._wrapVector
+-    },
+-    set: function(v) {
+-      if(!Array.isArray(v)) {
+-        v = [v,v]
+-      }
+-      if(v.length !== 2) {
+-        throw new Error('gl-texture2d: Must specify wrap mode for rows and columns')
+-      }
+-      for(var i=0; i<2; ++i) {
+-        if(wrapTypes.indexOf(v[i]) < 0) {
+-          throw new Error('gl-texture2d: Unknown wrap mode ' + v)
+-        }
+-      }
+-      this._wrapS = v[0]
+-      this._wrapT = v[1]
++  this.gl              = gl
+ 
+-      var gl = this.gl
+-      this.bind()
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, this._wrapS)
+-      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, this._wrapT)
++  this.pixelRatio      = 1
+ 
+-      return v
+-    }
+-  },
+-  shape: {
+-    get: function() {
+-      return this._shapeVector
+-    },
+-    set: function(x) {
+-      if(!Array.isArray(x)) {
+-        x = [x|0,x|0]
+-      } else {
+-        if(x.length !== 2) {
+-          throw new Error('gl-texture2d: Invalid texture shape')
+-        }
+-      }
+-      reshapeTexture(this, x[0]|0, x[1]|0)
+-      return [x[0]|0, x[1]|0]
+-    }
+-  },
+-  width: {
+-    get: function() {
+-      return this._shape[0]
+-    },
+-    set: function(w) {
+-      w = w|0
+-      reshapeTexture(this, w, this._shape[1])
+-      return w
+-    }
+-  },
+-  height: {
+-    get: function() {
+-      return this._shape[1]
+-    },
+-    set: function(h) {
+-      h = h|0
+-      reshapeTexture(this, this._shape[0], h)
+-      return h
+-    }
+-  }
+-})
++  this.shader          = shader
++  this.orthoShader     = orthoShader
++  this.projectShader   = projectShader
+ 
+-proto.bind = function(unit) {
+-  var gl = this.gl
+-  if(unit !== undefined) {
+-    gl.activeTexture(gl.TEXTURE0 + (unit|0))
+-  }
+-  gl.bindTexture(gl.TEXTURE_2D, this.handle)
+-  if(unit !== undefined) {
+-    return (unit|0)
+-  }
+-  return gl.getParameter(gl.ACTIVE_TEXTURE) - gl.TEXTURE0
+-}
++  this.pointBuffer     = pointBuffer
++  this.colorBuffer     = colorBuffer
++  this.glyphBuffer     = glyphBuffer
++  this.idBuffer        = idBuffer
++  this.vao             = vao
++  this.vertexCount     = 0
++  this.lineVertexCount = 0
+ 
+-proto.dispose = function() {
+-  this.gl.deleteTexture(this.handle)
+-}
++  this.opacity         = 1.0
+ 
+-proto.generateMipmap = function() {
+-  this.bind()
+-  this.gl.generateMipmap(this.gl.TEXTURE_2D)
++  this.lineWidth       = 0
++  this.projectScale    = [2.0/3.0, 2.0/3.0, 2.0/3.0]
++  this.projectOpacity  = [1,1,1]
+ 
+-  //Update mip levels
+-  var l = Math.min(this._shape[0], this._shape[1])
+-  for(var i=0; l>0; ++i, l>>>=1) {
+-    if(this._mipLevels.indexOf(i) < 0) {
+-      this._mipLevels.push(i)
+-    }
+-  }
+-}
++  this.pickId                = 0
++  this.pickPerspectiveShader = pickPerspectiveShader
++  this.pickOrthoShader       = pickOrthoShader
++  this.pickProjectShader     = pickProjectShader
++  this.points                = []
+ 
+-proto.setPixels = function(data, x_off, y_off, mip_level) {
+-  var gl = this.gl
+-  this.bind()
+-  if(Array.isArray(x_off)) {
+-    mip_level = y_off
+-    y_off = x_off[1]|0
+-    x_off = x_off[0]|0
+-  } else {
+-    x_off = x_off || 0
+-    y_off = y_off || 0
+-  }
+-  mip_level = mip_level || 0
+-  if(data instanceof HTMLCanvasElement ||
+-     data instanceof ImageData ||
+-     data instanceof HTMLImageElement ||
+-     data instanceof HTMLVideoElement) {
+-    var needsMip = this._mipLevels.indexOf(mip_level) < 0
+-    if(needsMip) {
+-      gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, this.type, data)
+-      this._mipLevels.push(mip_level)
+-    } else {
+-      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, this.format, this.type, data)
+-    }
+-  } else if(data.shape && data.stride && data.data) {
+-    if(data.shape.length < 2 ||
+-       x_off + data.shape[1] > this._shape[1]>>>mip_level ||
+-       y_off + data.shape[0] > this._shape[0]>>>mip_level ||
+-       x_off < 0 ||
+-       y_off < 0) {
+-      throw new Error('gl-texture2d: Texture dimensions are out of bounds')
+-    }
+-    texSubImageArray(gl, x_off, y_off, mip_level, this.format, this.type, this._mipLevels, data)
+-  } else {
+-    throw new Error('gl-texture2d: Unsupported data type')
+-  }
+-}
++  this._selectResult = new ScatterPlotPickResult(0, [0,0,0])
+ 
++  this.useOrtho = true
++  this.bounds   = [[ Infinity,Infinity,Infinity],
++                   [-Infinity,-Infinity,-Infinity]]
+ 
+-function isPacked(shape, stride) {
+-  if(shape.length === 3) {
+-    return  (stride[2] === 1) &&
+-            (stride[1] === shape[0]*shape[2]) &&
+-            (stride[0] === shape[2])
+-  }
+-  return  (stride[0] === 1) &&
+-          (stride[1] === shape[0])
+-}
++  //Axes projections
++  this.axesProject = [ true, true, true ]
++  this.axesBounds = [[-Infinity,-Infinity,-Infinity],
++                     [ Infinity, Infinity, Infinity]]
+ 
+-function texSubImageArray(gl, x_off, y_off, mip_level, cformat, ctype, mipLevels, array) {
+-  var dtype = array.dtype
+-  var shape = array.shape.slice()
+-  if(shape.length < 2 || shape.length > 3) {
+-    throw new Error('gl-texture2d: Invalid ndarray, must be 2d or 3d')
+-  }
+-  var type = 0, format = 0
+-  var packed = isPacked(shape, array.stride.slice())
+-  if(dtype === 'float32') {
+-    type = gl.FLOAT
+-  } else if(dtype === 'float64') {
+-    type = gl.FLOAT
+-    packed = false
+-    dtype = 'float32'
+-  } else if(dtype === 'uint8') {
+-    type = gl.UNSIGNED_BYTE
+-  } else {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
+-    dtype = 'uint8'
+-  }
+-  var channels = 1
+-  if(shape.length === 2) {
+-    format = gl.LUMINANCE
+-    shape = [shape[0], shape[1], 1]
+-    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
+-  } else if(shape.length === 3) {
+-    if(shape[2] === 1) {
+-      format = gl.ALPHA
+-    } else if(shape[2] === 2) {
+-      format = gl.LUMINANCE_ALPHA
+-    } else if(shape[2] === 3) {
+-      format = gl.RGB
+-    } else if(shape[2] === 4) {
+-      format = gl.RGBA
+-    } else {
+-      throw new Error('gl-texture2d: Invalid shape for pixel coords')
+-    }
+-    channels = shape[2]
+-  } else {
+-    throw new Error('gl-texture2d: Invalid shape for texture')
+-  }
+-  //For 1-channel textures allow conversion between formats
+-  if((format  === gl.LUMINANCE || format  === gl.ALPHA) &&
+-     (cformat === gl.LUMINANCE || cformat === gl.ALPHA)) {
+-    format = cformat
++  this.highlightId    = [1,1,1,1]
++  this.highlightScale = 2
++
++  this.clipBounds = [[-Infinity,-Infinity,-Infinity],
++                     [ Infinity, Infinity, Infinity]]
++
++  this.dirty = true
++}
++
++var proto = PointCloud.prototype
++
++proto.pickSlots = 1
++
++proto.setPickBase = function(pickBase) {
++  this.pickId = pickBase
++}
++
++proto.isTransparent = function() {
++  if(this.opacity < 1)  {
++    return true
+   }
+-  if(format !== cformat) {
+-    throw new Error('gl-texture2d: Incompatible texture format for setPixels')
++  for(var i=0; i<3; ++i) {
++    if(this.axesProject[i] && this.projectOpacity[i] < 1) {
++      return true
++    }
+   }
+-  var size = array.size
+-  var needsMip = mipLevels.indexOf(mip_level) < 0
+-  if(needsMip) {
+-    mipLevels.push(mip_level)
++  return false
++}
++
++proto.isOpaque = function() {
++  if(this.opacity >= 1)  {
++    return true
+   }
+-  if(type === ctype && packed) {
+-    //Array data types are compatible, can directly copy into texture
+-    if(array.offset === 0 && array.data.length === size) {
+-      if(needsMip) {
+-        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data)
+-      } else {
+-        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data)
+-      }
+-    } else {
+-      if(needsMip) {
+-        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data.subarray(array.offset, array.offset+size))
+-      } else {
+-        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data.subarray(array.offset, array.offset+size))
+-      }
+-    }
+-  } else {
+-    //Need to do type conversion to pack data into buffer
+-    var pack_buffer
+-    if(ctype === gl.FLOAT) {
+-      pack_buffer = pool.mallocFloat32(size)
+-    } else {
+-      pack_buffer = pool.mallocUint8(size)
+-    }
+-    var pack_view = ndarray(pack_buffer, shape, [shape[2], shape[2]*shape[0], 1])
+-    if(type === gl.FLOAT && ctype === gl.UNSIGNED_BYTE) {
+-      convertFloatToUint8(pack_view, array)
+-    } else {
+-      ops.assign(pack_view, array)
+-    }
+-    if(needsMip) {
+-      gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, pack_buffer.subarray(0, size))
+-    } else {
+-      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, pack_buffer.subarray(0, size))
+-    }
+-    if(ctype === gl.FLOAT) {
+-      pool.freeFloat32(pack_buffer)
+-    } else {
+-      pool.freeUint8(pack_buffer)
++  for(var i=0; i<3; ++i) {
++    if(this.axesProject[i] && this.projectOpacity[i] >= 1) {
++      return true
+     }
+   }
++  return false
+ }
+ 
+-function initTexture(gl) {
+-  var tex = gl.createTexture()
+-  gl.bindTexture(gl.TEXTURE_2D, tex)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
+-  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
+-  return tex
++var VIEW_SHAPE = [0,0]
++var U_VEC = [0,0,0]
++var V_VEC = [0,0,0]
++var MU_VEC = [0,0,0,1]
++var MV_VEC = [0,0,0,1]
++var SCRATCH_MATRIX = IDENTITY.slice()
++var SCRATCH_VEC = [0,0,0]
++var CLIP_BOUNDS = [[0,0,0], [0,0,0]]
++
++function zeroVec(a) {
++  a[0] = a[1] = a[2] = 0
++  return a
+ }
+ 
+-function createTextureShape(gl, width, height, format, type) {
+-  var maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(width < 0 || width > maxTextureSize || height < 0 || height  > maxTextureSize) {
+-    throw new Error('gl-texture2d: Invalid texture shape')
+-  }
+-  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
+-    throw new Error('gl-texture2d: Floating point textures not supported on this platform')
+-  }
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, format, type, null)
+-  return new Texture2D(gl, tex, width, height, format, type)
++function augment(hg, af) {
++  hg[0] = af[0]
++  hg[1] = af[1]
++  hg[2] = af[2]
++  hg[3] = 1
++  return hg
+ }
+ 
+-function createTextureDOM(gl, element, format, type) {
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, format, type, element)
+-  return new Texture2D(gl, tex, element.width|0, element.height|0, format, type)
++function setComponent(out, v, i, x) {
++  out[0] = v[0]
++  out[1] = v[1]
++  out[2] = v[2]
++  out[i] = x
++  return out
+ }
+ 
+-//Creates a texture from an ndarray
+-function createTextureArray(gl, array) {
+-  var dtype = array.dtype
+-  var shape = array.shape.slice()
+-  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
+-  if(shape[0] < 0 || shape[0] > maxSize || shape[1] < 0 || shape[1] > maxSize) {
+-    throw new Error('gl-texture2d: Invalid texture size')
++function getClipBounds(bounds) {
++  var result = CLIP_BOUNDS
++  for(var i=0; i<2; ++i) {
++    for(var j=0; j<3; ++j) {
++      result[i][j] = Math.max(Math.min(bounds[i][j], 1e8), -1e8)
++    }
+   }
+-  var packed = isPacked(shape, array.stride.slice())
+-  var type = 0
+-  if(dtype === 'float32') {
+-    type = gl.FLOAT
+-  } else if(dtype === 'float64') {
+-    type = gl.FLOAT
+-    packed = false
+-    dtype = 'float32'
+-  } else if(dtype === 'uint8') {
+-    type = gl.UNSIGNED_BYTE
++  return result
++}
++
++function drawProject(shader, points, camera, transparent, forceDraw) {
++  var axesProject = points.axesProject
++
++  var gl         = points.gl
++  var uniforms   = shader.uniforms
++  var model      = camera.model      || IDENTITY
++  var view       = camera.view       || IDENTITY
++  var projection = camera.projection || IDENTITY
++  var bounds     = points.axesBounds
++  var clipBounds = getClipBounds(points.clipBounds)
++
++  var cubeAxis
++  if(points.axes) {
++    cubeAxis = points.axes.lastCubeProps.axis
+   } else {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
+-    dtype = 'uint8'
++    cubeAxis = [1,1,1]
+   }
+-  var format = 0
+-  if(shape.length === 2) {
+-    format = gl.LUMINANCE
+-    shape = [shape[0], shape[1], 1]
+-    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
+-  } else if(shape.length === 3) {
+-    if(shape[2] === 1) {
+-      format = gl.ALPHA
+-    } else if(shape[2] === 2) {
+-      format = gl.LUMINANCE_ALPHA
+-    } else if(shape[2] === 3) {
+-      format = gl.RGB
+-    } else if(shape[2] === 4) {
+-      format = gl.RGBA
+-    } else {
+-      throw new Error('gl-texture2d: Invalid shape for pixel coords')
++
++  VIEW_SHAPE[0] = 2.0/gl.drawingBufferWidth
++  VIEW_SHAPE[1] = 2.0/gl.drawingBufferHeight
++
++  shader.bind()
++  uniforms.view           = view
++  uniforms.projection     = projection
++  uniforms.screenSize     = VIEW_SHAPE
++  uniforms.highlightId    = points.highlightId
++  uniforms.highlightScale = points.highlightScale
++  uniforms.clipBounds     = clipBounds
++  uniforms.pickGroup      = points.pickId / 255.0
++  uniforms.pixelRatio     = points.pixelRatio
++
++  for(var i=0; i<3; ++i) {
++    if(!axesProject[i]) {
++      continue
+     }
+-  } else {
+-    throw new Error('gl-texture2d: Invalid shape for texture')
+-  }
+-  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
+-    type = gl.UNSIGNED_BYTE
+-    packed = false
+-  }
+-  var buffer, buf_store
+-  var size = array.size
+-  if(!packed) {
+-    var stride = [shape[2], shape[2]*shape[0], 1]
+-    buf_store = pool.malloc(size, dtype)
+-    var buf_array = ndarray(buf_store, shape, stride, 0)
+-    if((dtype === 'float32' || dtype === 'float64') && type === gl.UNSIGNED_BYTE) {
+-      convertFloatToUint8(buf_array, array)
+-    } else {
+-      ops.assign(buf_array, array)
++    if((points.projectOpacity[i] < 1) !== transparent) {
++      continue
+     }
+-    buffer = buf_store.subarray(0, size)
+-  } else if (array.offset === 0 && array.data.length === size) {
+-    buffer = array.data
+-  } else {
+-    buffer = array.data.subarray(array.offset, array.offset + size)
+-  }
+-  var tex = initTexture(gl)
+-  gl.texImage2D(gl.TEXTURE_2D, 0, format, shape[0], shape[1], 0, format, type, buffer)
+-  if(!packed) {
+-    pool.free(buf_store)
+-  }
+-  return new Texture2D(gl, tex, shape[0], shape[1], format, type)
+-}
+ 
+-function createTexture2D(gl) {
+-  if(arguments.length <= 1) {
+-    throw new Error('gl-texture2d: Missing arguments for texture2d constructor')
+-  }
+-  if(!linearTypes) {
+-    lazyInitLinearTypes(gl)
+-  }
+-  if(typeof arguments[1] === 'number') {
+-    return createTextureShape(gl, arguments[1], arguments[2], arguments[3]||gl.RGBA, arguments[4]||gl.UNSIGNED_BYTE)
+-  }
+-  if(Array.isArray(arguments[1])) {
+-    return createTextureShape(gl, arguments[1][0]|0, arguments[1][1]|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
+-  }
+-  if(typeof arguments[1] === 'object') {
+-    var obj = arguments[1]
+-    if(obj instanceof HTMLCanvasElement ||
+-       obj instanceof HTMLImageElement ||
+-       obj instanceof HTMLVideoElement ||
+-       obj instanceof ImageData) {
+-      return createTextureDOM(gl, obj, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
+-    } else if(obj.shape && obj.data && obj.stride) {
+-      return createTextureArray(gl, obj)
++    uniforms.scale          = points.projectScale[i]
++    uniforms.opacity        = points.projectOpacity[i]
++
++    //Project model matrix
++    var pmodel = SCRATCH_MATRIX
++    for(var j=0; j<16; ++j) {
++      pmodel[j] = 0
+     }
+-  }
+-  throw new Error('gl-texture2d: Invalid arguments for texture2d constructor')
+-}
++    for(var j=0; j<4; ++j) {
++      pmodel[5*j] = 1
++    }
++    pmodel[5*i] = 0
++    if(cubeAxis[i] < 0) {
++      pmodel[12+i] = bounds[0][i]
++    } else {
++      pmodel[12+i] = bounds[1][i]
++    }
++    mat4mult(pmodel, model, pmodel)
++    uniforms.model = pmodel
+ 
+-},{"ndarray":433,"ndarray-ops":432,"typedarray-pool":458}],229:[function(require,module,exports){
+-"use strict"
++    //Compute initial axes
++    var u = (i+1)%3
++    var v = (i+2)%3
++    var du = zeroVec(U_VEC)
++    var dv = zeroVec(V_VEC)
++    du[u] = 1
++    dv[v] = 1
+ 
+-function doBind(gl, elements, attributes) {
+-  if(elements) {
+-    elements.bind()
+-  } else {
+-    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null)
+-  }
+-  var nattribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS)|0
+-  if(attributes) {
+-    if(attributes.length > nattribs) {
+-      throw new Error("gl-vao: Too many vertex attributes")
++    //Align orientation relative to viewer
++    var mdu = project(projection, view, model, augment(MU_VEC, du))
++    var mdv = project(projection, view, model, augment(MV_VEC, dv))
++    if(Math.abs(mdu[1]) > Math.abs(mdv[1])) {
++      var tmp = mdu
++      mdu = mdv
++      mdv = tmp
++      tmp = du
++      du = dv
++      dv = tmp
++      var t = u
++      u = v
++      v = t
+     }
+-    for(var i=0; i<attributes.length; ++i) {
+-      var attrib = attributes[i]
+-      if(attrib.buffer) {
+-        var buffer = attrib.buffer
+-        var size = attrib.size || 4
+-        var type = attrib.type || gl.FLOAT
+-        var normalized = !!attrib.normalized
+-        var stride = attrib.stride || 0
+-        var offset = attrib.offset || 0
+-        buffer.bind()
+-        gl.enableVertexAttribArray(i)
+-        gl.vertexAttribPointer(i, size, type, normalized, stride, offset)
+-      } else {
+-        if(typeof attrib === "number") {
+-          gl.vertexAttrib1f(i, attrib)
+-        } else if(attrib.length === 1) {
+-          gl.vertexAttrib1f(i, attrib[0])
+-        } else if(attrib.length === 2) {
+-          gl.vertexAttrib2f(i, attrib[0], attrib[1])
+-        } else if(attrib.length === 3) {
+-          gl.vertexAttrib3f(i, attrib[0], attrib[1], attrib[2])
+-        } else if(attrib.length === 4) {
+-          gl.vertexAttrib4f(i, attrib[0], attrib[1], attrib[2], attrib[3])
+-        } else {
+-          throw new Error("gl-vao: Invalid vertex attribute")
+-        }
+-        gl.disableVertexAttribArray(i)
+-      }
++    if(mdu[0] < 0) {
++      du[u] = -1
+     }
+-    for(; i<nattribs; ++i) {
+-      gl.disableVertexAttribArray(i)
++    if(mdv[1] > 0) {
++      dv[v] = -1
+     }
+-  } else {
+-    gl.bindBuffer(gl.ARRAY_BUFFER, null)
+-    for(var i=0; i<nattribs; ++i) {
+-      gl.disableVertexAttribArray(i)
++    var su = 0.0
++    var sv = 0.0
++    for(var j=0; j<4; ++j) {
++      su += Math.pow(model[4*u+j], 2)
++      sv += Math.pow(model[4*v+j], 2)
++    }
++    du[u] /= Math.sqrt(su)
++    dv[v] /= Math.sqrt(sv)
++    uniforms.axes[0] = du
++    uniforms.axes[1] = dv
++
++    //Update fragment clip bounds
++    uniforms.fragClipBounds[0] = setComponent(SCRATCH_VEC, clipBounds[0], i, -1e8)
++    uniforms.fragClipBounds[1] = setComponent(SCRATCH_VEC, clipBounds[1], i, 1e8)
++
++    //Draw interior
++    points.vao.draw(gl.TRIANGLES, points.vertexCount)
++
++    //Draw edges
++    if(points.lineWidth > 0) {
++      gl.lineWidth(points.lineWidth)
++      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
+     }
+   }
+ }
+ 
+-module.exports = doBind
+-},{}],230:[function(require,module,exports){
+-"use strict"
+ 
+-var bindAttribs = require("./do-bind.js")
++var NEG_INFINITY3 = [-1e8, -1e8, -1e8]
++var POS_INFINITY3 = [1e8, 1e8, 1e8]
++var CLIP_GROUP    = [NEG_INFINITY3, POS_INFINITY3]
+ 
+-function VAOEmulated(gl) {
+-  this.gl = gl
+-  this._elements = null
+-  this._attributes = null
+-  this._elementsType = gl.UNSIGNED_SHORT
+-}
++function drawFull(shader, pshader, points, camera, transparent, forceDraw) {
++  var gl = points.gl
+ 
+-VAOEmulated.prototype.bind = function() {
+-  bindAttribs(this.gl, this._elements, this._attributes)
+-}
++  points.vao.bind()
+ 
+-VAOEmulated.prototype.update = function(attributes, elements, elementsType) {
+-  this._elements = elements
+-  this._attributes = attributes
+-  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
+-}
++  if(transparent === (points.opacity < 1) || forceDraw) {
++    shader.bind()
++    var uniforms = shader.uniforms
+ 
+-VAOEmulated.prototype.dispose = function() { }
+-VAOEmulated.prototype.unbind = function() { }
++    uniforms.model      = camera.model      || IDENTITY
++    uniforms.view       = camera.view       || IDENTITY
++    uniforms.projection = camera.projection || IDENTITY
+ 
+-VAOEmulated.prototype.draw = function(mode, count, offset) {
+-  offset = offset || 0
+-  var gl = this.gl
+-  if(this._elements) {
+-    gl.drawElements(mode, count, this._elementsType, offset)
+-  } else {
+-    gl.drawArrays(mode, offset, count)
+-  }
+-}
++    VIEW_SHAPE[0]       = 2.0/gl.drawingBufferWidth
++    VIEW_SHAPE[1]       = 2.0/gl.drawingBufferHeight
++    uniforms.screenSize = VIEW_SHAPE
+ 
+-function createVAOEmulated(gl) {
+-  return new VAOEmulated(gl)
+-}
++    uniforms.highlightId    = points.highlightId
++    uniforms.highlightScale = points.highlightScale
+ 
+-module.exports = createVAOEmulated
+-},{"./do-bind.js":229}],231:[function(require,module,exports){
+-"use strict"
++    uniforms.fragClipBounds = CLIP_GROUP
++    uniforms.clipBounds     = points.axes.bounds
+ 
+-var bindAttribs = require("./do-bind.js")
++    uniforms.opacity    = points.opacity
++    uniforms.pickGroup  = points.pickId / 255.0
+ 
+-function VertexAttribute(location, dimension, a, b, c, d) {
+-  this.location = location
+-  this.dimension = dimension
+-  this.a = a
+-  this.b = b
+-  this.c = c
+-  this.d = d
+-}
++    uniforms.pixelRatio = points.pixelRatio
+ 
+-VertexAttribute.prototype.bind = function(gl) {
+-  switch(this.dimension) {
+-    case 1:
+-      gl.vertexAttrib1f(this.location, this.a)
+-    break
+-    case 2:
+-      gl.vertexAttrib2f(this.location, this.a, this.b)
+-    break
+-    case 3:
+-      gl.vertexAttrib3f(this.location, this.a, this.b, this.c)
+-    break
+-    case 4:
+-      gl.vertexAttrib4f(this.location, this.a, this.b, this.c, this.d)
+-    break
++    //Draw interior
++    points.vao.draw(gl.TRIANGLES, points.vertexCount)
++
++    //Draw edges
++    if(points.lineWidth > 0) {
++      gl.lineWidth(points.lineWidth)
++      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
++    }
+   }
+-}
+ 
+-function VAONative(gl, ext, handle) {
+-  this.gl = gl
+-  this._ext = ext
+-  this.handle = handle
+-  this._attribs = []
+-  this._useElements = false
+-  this._elementsType = gl.UNSIGNED_SHORT
++  drawProject(pshader, points, camera, transparent, forceDraw)
++
++  points.vao.unbind()
+ }
+ 
+-VAONative.prototype.bind = function() {
+-  this._ext.bindVertexArrayOES(this.handle)
+-  for(var i=0; i<this._attribs.length; ++i) {
+-    this._attribs[i].bind(this.gl)
+-  }
++proto.draw = function(camera) {
++  var shader = this.useOrtho ? this.orthoShader : this.shader
++  drawFull(shader, this.projectShader, this, camera, false, false)
+ }
+ 
+-VAONative.prototype.unbind = function() {
+-  this._ext.bindVertexArrayOES(null)
++proto.drawTransparent = function(camera) {
++  var shader = this.useOrtho ? this.orthoShader : this.shader
++  drawFull(shader, this.projectShader, this, camera, true, false)
+ }
+ 
+-VAONative.prototype.dispose = function() {
+-  this._ext.deleteVertexArrayOES(this.handle)
++proto.drawPick = function(camera) {
++  var shader = this.useOrtho ? this.pickOrthoShader : this.pickPerspectiveShader
++  drawFull(shader, this.pickProjectShader, this, camera, false, true)
+ }
+ 
+-VAONative.prototype.update = function(attributes, elements, elementsType) {
+-  this.bind()
+-  bindAttribs(this.gl, elements, attributes)
+-  this.unbind()
+-  this._attribs.length = 0
+-  if(attributes)
+-  for(var i=0; i<attributes.length; ++i) {
+-    var a = attributes[i]
+-    if(typeof a === "number") {
+-      this._attribs.push(new VertexAttribute(i, 1, a))
+-    } else if(Array.isArray(a)) {
+-      this._attribs.push(new VertexAttribute(i, a.length, a[0], a[1], a[2], a[3]))
+-    }
++proto.pick = function(selected) {
++  if(!selected) {
++    return null
++  }
++  if(selected.id !== this.pickId) {
++    return null
++  }
++  var x = selected.value[2] + (selected.value[1]<<8) + (selected.value[0]<<16)
++  if(x >= this.pointCount || x < 0) {
++    return null
++  }
++
++  //Unpack result
++  var coord = this.points[x]
++  var result = this._selectResult
++  result.index = x
++  for(var i=0; i<3; ++i) {
++    result.position[i] = result.dataCoordinate[i] = coord[i]
+   }
+-  this._useElements = !!elements
+-  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
++  return result
+ }
+ 
+-VAONative.prototype.draw = function(mode, count, offset) {
+-  offset = offset || 0
+-  var gl = this.gl
+-  if(this._useElements) {
+-    gl.drawElements(mode, count, this._elementsType, offset)
++proto.highlight = function(selection) {
++  if(!selection) {
++    this.highlightId = [1,1,1,1]
+   } else {
+-    gl.drawArrays(mode, offset, count)
++    var pointId = selection.index
++    var a0 =  pointId     &0xff
++    var a1 = (pointId>>8) &0xff
++    var a2 = (pointId>>16)&0xff
++    this.highlightId = [a0/255.0, a1/255.0, a2/255.0, 0]
+   }
+ }
+ 
+-function createVAONative(gl, ext) {
+-  return new VAONative(gl, ext, ext.createVertexArrayOES())
+-}
++proto.update = function(options) {
+ 
+-module.exports = createVAONative
+-},{"./do-bind.js":229}],232:[function(require,module,exports){
+-"use strict"
++  options = options || {}
+ 
+-var createVAONative = require("./lib/vao-native.js")
+-var createVAOEmulated = require("./lib/vao-emulated.js")
++  if('perspective' in options) {
++    this.useOrtho = !options.perspective
++  }
++  if('orthographic' in options) {
++    this.useOrtho = !!options.orthographic
++  }
++  if('lineWidth' in options) {
++    this.lineWidth = options.lineWidth
++  }
++  if('project' in options) {
++    if(Array.isArray(options.project)) {
++      this.axesProject = options.project
++    } else {
++      var v = !!options.project
++      this.axesProject = [v,v,v]
++    }
++  }
++  if('projectScale' in options) {
++    if(Array.isArray(options.projectScale)) {
++      this.projectScale = options.projectScale.slice()
++    } else {
++      var s = +options.projectScale
++      this.projectScale = [s,s,s]
++    }
++  }
++  if('projectOpacity' in options) {
++    if(Array.isArray(options.projectOpacity)) {
++      this.projectOpacity = options.projectOpacity.slice()
++    } else {
++      var s = +options.projectOpacity
++      this.projectOpacity = [s,s,s]
++    }
++  }
++  if('opacity' in options) {
++    this.opacity = options.opacity
++  }
+ 
+-function createVAO(gl, attributes, elements, elementsType) {
+-  var ext = gl.getExtension('OES_vertex_array_object')
+-  var vao
+-  if(ext) {
+-    vao = createVAONative(gl, ext)
+-  } else {
+-    vao = createVAOEmulated(gl)
++  //Set dirty flag
++  this.dirty = true
++
++  //Create new buffers
++  var points = options.position
++  if(!points) {
++    return
+   }
+-  vao.update(attributes, elements, elementsType)
+-  return vao
+-}
+ 
+-module.exports = createVAO
++  //Text font
++  var font      = options.font      || 'normal'
++  var alignment = options.alignment || [0,0]
+ 
+-},{"./lib/vao-emulated.js":230,"./lib/vao-native.js":231}],233:[function(require,module,exports){
+-module.exports = transformMat4
++  //Bounds
++  var lowerBound = [ Infinity, Infinity, Infinity]
++  var upperBound = [-Infinity,-Infinity,-Infinity]
+ 
+-/**
+- * Transforms the vec4 with a mat4.
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec4} out
+- */
+-function transformMat4 (out, a, m) {
+-  var x = a[0], y = a[1], z = a[2], w = a[3]
+-  out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w
+-  out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w
+-  out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w
+-  out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w
+-  return out
+-}
++  //Unpack options
++  var glyphs     = options.glyph
++  var colors     = options.color
++  var sizes      = options.size
++  var angles     = options.angle
++  var lineColors = options.lineColor
+ 
+-},{}],234:[function(require,module,exports){
+-module.exports = tokenize
++  //Picking geometry
++  var pickCounter = 0
+ 
+-var literals100 = require('./lib/literals')
+-  , operators = require('./lib/operators')
+-  , builtins100 = require('./lib/builtins')
+-  , literals300es = require('./lib/literals-300es')
+-  , builtins300es = require('./lib/builtins-300es')
++  //First do pass to compute buffer sizes
++  var triVertexCount     = 0
++  var lineVertexCount = 0
+ 
+-var NORMAL = 999          // <-- never emitted
+-  , TOKEN = 9999          // <-- never emitted
+-  , BLOCK_COMMENT = 0
+-  , LINE_COMMENT = 1
+-  , PREPROCESSOR = 2
+-  , OPERATOR = 3
+-  , INTEGER = 4
+-  , FLOAT = 5
+-  , IDENT = 6
+-  , BUILTIN = 7
+-  , KEYWORD = 8
+-  , WHITESPACE = 9
+-  , EOF = 10
+-  , HEX = 11
++  //Count number of points and buffer size
++  var numPoints   = points.length
+ 
+-var map = [
+-    'block-comment'
+-  , 'line-comment'
+-  , 'preprocessor'
+-  , 'operator'
+-  , 'integer'
+-  , 'float'
+-  , 'ident'
+-  , 'builtin'
+-  , 'keyword'
+-  , 'whitespace'
+-  , 'eof'
+-  , 'integer'
+-]
++count_loop:
++  for(var i=0; i<numPoints; ++i) {
++    var x = points[i]
++    for(var j=0; j<3; ++j) {
++      if(isNaN(x[j]) || !isFinite(x[j])) {
++        continue count_loop
++      }
++    }
+ 
+-function tokenize(opt) {
+-  var i = 0
+-    , total = 0
+-    , mode = NORMAL
+-    , c
+-    , last
+-    , content = []
+-    , tokens = []
+-    , token_idx = 0
+-    , token_offs = 0
+-    , line = 1
+-    , col = 0
+-    , start = 0
+-    , isnum = false
+-    , isoperator = false
+-    , input = ''
+-    , len
++    var glyphData
++    if(Array.isArray(glyphs)) {
++      glyphData = getGlyph(glyphs[i], font)
++    } else if(glyphs) {
++      glyphData = getGlyph(glyphs, font)
++    } else {
++      glyphData = getGlyph('●', font)
++    }
++    var glyphMesh   = glyphData[0]
++    var glyphLines  = glyphData[1]
++    var glyphBounds = glyphData[2]
+ 
+-  opt = opt || {}
+-  var allBuiltins = builtins100
+-  var allLiterals = literals100
+-  if (opt.version === '300 es') {
+-    allBuiltins = builtins300es
+-    allLiterals = literals300es
++    triVertexCount  += glyphMesh.cells.length * 3
++    lineVertexCount += glyphLines.edges.length * 2
+   }
+ 
+-  return function(data) {
+-    tokens = []
+-    if (data !== null) return write(data)
+-    return end()
+-  }
+ 
+-  function token(data) {
+-    if (data.length) {
+-      tokens.push({
+-        type: map[mode]
+-      , data: data
+-      , position: start
+-      , line: line
+-      , column: col
+-      })
+-    }
+-  }
++  //Preallocate data
++  var vertexCount   = triVertexCount + lineVertexCount
++  var positionArray = pool.mallocFloat(3*vertexCount)
++  var colorArray    = pool.mallocFloat(4*vertexCount)
++  var glyphArray    = pool.mallocFloat(2*vertexCount)
++  var idArray       = pool.mallocUint32(vertexCount)
+ 
+-  function write(chunk) {
+-    i = 0
+-    input += chunk
+-    len = input.length
++  var textOffset = [0,alignment[1]]
+ 
+-    var last
++  var triOffset  = 0
++  var lineOffset = triVertexCount
++  var color      = [0,0,0,1]
++  var lineColor  = [0,0,0,1]
+ 
+-    while(c = input[i], i < len) {
+-      last = i
++  var isColorArray      = Array.isArray(colors)     && Array.isArray(colors[0])
++  var isLineColorArray  = Array.isArray(lineColors) && Array.isArray(lineColors[0])
+ 
+-      switch(mode) {
+-        case BLOCK_COMMENT: i = block_comment(); break
+-        case LINE_COMMENT: i = line_comment(); break
+-        case PREPROCESSOR: i = preprocessor(); break
+-        case OPERATOR: i = operator(); break
+-        case INTEGER: i = integer(); break
+-        case HEX: i = hex(); break
+-        case FLOAT: i = decimal(); break
+-        case TOKEN: i = readtoken(); break
+-        case WHITESPACE: i = whitespace(); break
+-        case NORMAL: i = normal(); break
++fill_loop:
++  for(var i=0; i<numPoints; ++i) {
++    var x = points[i]
++    for(var j=0; j<3; ++j) {
++      if(isNaN(x[j]) || !isFinite(x[j])) {
++        pickCounter += 1
++        continue fill_loop
+       }
+ 
+-      if(last !== i) {
+-        switch(input[last]) {
+-          case '\n': col = 0; ++line; break
+-          default: ++col; break
+-        }
+-      }
++      upperBound[j] = Math.max(upperBound[j], x[j])
++      lowerBound[j] = Math.min(lowerBound[j], x[j])
+     }
+ 
+-    total += i
+-    input = input.slice(i)
+-    return tokens
+-  }
+-
+-  function end(chunk) {
+-    if(content.length) {
+-      token(content.join(''))
++    var glyphData
++    if(Array.isArray(glyphs)) {
++      glyphData = getGlyph(glyphs[i], font)
++    } else if(glyphs) {
++      glyphData = getGlyph(glyphs, font)
++    } else {
++      glyphData = getGlyph('●', font)
+     }
++    var glyphMesh   = glyphData[0]
++    var glyphLines  = glyphData[1]
++    var glyphBounds = glyphData[2]
+ 
+-    mode = EOF
+-    token('(eof)')
+-    return tokens
+-  }
+-
+-  function normal() {
+-    content = content.length ? [] : content
+ 
+-    if(last === '/' && c === '*') {
+-      start = total + i - 1
+-      mode = BLOCK_COMMENT
+-      last = c
+-      return i + 1
++    //Get color
++    if(Array.isArray(colors)) {
++      var c
++      if(isColorArray) {
++        c = colors[i]
++      } else {
++        c = colors
++      }
++      if(c.length === 3) {
++        for(var j=0; j<3; ++j) {
++          color[j] = c[j]
++        }
++        color[3] = 1
++      } else if(c.length === 4) {
++        for(var j=0; j<4; ++j) {
++          color[j] = c[j]
++        }
++      }
++    } else {
++      color[0] = color[1] = color[2] = 0
++      color[3] = 1
+     }
+ 
+-    if(last === '/' && c === '/') {
+-      start = total + i - 1
+-      mode = LINE_COMMENT
+-      last = c
+-      return i + 1
++    //Get lineColor
++    if(Array.isArray(lineColors)) {
++      var c
++      if(isLineColorArray) {
++        c = lineColors[i]
++      } else {
++        c = lineColors
++      }
++      if(c.length === 3) {
++        for(var j=0; j<3; ++j) {
++          lineColor[j] = c[j]
++        }
++        lineColor[j] = 1
++      } else if(c.length === 4) {
++        for(var j=0; j<4; ++j) {
++          lineColor[j] = c[j]
++        }
++      }
++    } else {
++      lineColor[0] = lineColor[1] = lineColor[2] = 0
++      lineColor[3] = 1
+     }
+ 
+-    if(c === '#') {
+-      mode = PREPROCESSOR
+-      start = total + i
+-      return i
++    var size = 0.5
++    if(Array.isArray(sizes)) {
++      size = +sizes[i]
++    } else if(sizes) {
++      size = +sizes
++    } else if(this.useOrtho) {
++      size = 12
+     }
+ 
+-    if(/\s/.test(c)) {
+-      mode = WHITESPACE
+-      start = total + i
+-      return i
++    var angle = 0
++    if(Array.isArray(angles)) {
++      angle = +angles[i]
++    } else if(angles) {
++      angle = +angles
+     }
+ 
+-    isnum = /\d/.test(c)
+-    isoperator = /[^\w_]/.test(c)
++    //Loop through markers and append to buffers
++    var cos = Math.cos(angle)
++    var sin = Math.sin(angle)
+ 
+-    start = total + i
+-    mode = isnum ? INTEGER : isoperator ? OPERATOR : TOKEN
+-    return i
+-  }
++    var x = points[i]
++    for(var j=0; j<3; ++j) {
++      upperBound[j] = Math.max(upperBound[j], x[j])
++      lowerBound[j] = Math.min(lowerBound[j], x[j])
++    }
+ 
+-  function whitespace() {
+-    if(/[^\s]/g.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
++    //Calculate text offset
++    if(alignment[0] < 0) {
++      textOffset[0] = alignment[0]  * (1+glyphBounds[1][0])
++    } else if(alignment[0] > 0) {
++      textOffset[0] = -alignment[0] * (1+glyphBounds[0][0])
+     }
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
+ 
+-  function preprocessor() {
+-    if(c === '\n' && last !== '\\') {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
++    //Write out inner marker
++    var cells = glyphMesh.cells
++    var verts = glyphMesh.positions
++
++    for(var j=0; j<cells.length; ++j) {
++      var cell = cells[j]
++      for(var k=0; k<3; ++k) {
++        for(var l=0; l<3; ++l) {
++          positionArray[3*triOffset+l] = x[l]
++        }
++        for(var l=0; l<4; ++l) {
++          colorArray[4*triOffset+l] = color[l]
++        }
++        idArray[triOffset] = pickCounter
++        var p = verts[cell[k]]
++        glyphArray[2*triOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
++        glyphArray[2*triOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
++        triOffset += 1
++      }
+     }
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
+ 
+-  function line_comment() {
+-    return preprocessor()
+-  }
++    var cells = glyphLines.edges
++    var verts = glyphLines.positions
+ 
+-  function block_comment() {
+-    if(c === '/' && last === '*') {
+-      content.push(c)
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i + 1
++    for(var j=0; j<cells.length; ++j) {
++      var cell = cells[j]
++      for(var k=0; k<2; ++k) {
++        for(var l=0; l<3; ++l) {
++          positionArray[3*lineOffset+l] = x[l]
++        }
++        for(var l=0; l<4; ++l) {
++          colorArray[4*lineOffset+l] = lineColor[l]
++        }
++        idArray[lineOffset] = pickCounter
++        var p = verts[cell[k]]
++        glyphArray[2*lineOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
++        glyphArray[2*lineOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
++        lineOffset += 1
++      }
+     }
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
++    //Increment pickCounter
++    pickCounter += 1
+   }
+ 
+-  function operator() {
+-    if(last === '.' && /\d/.test(c)) {
+-      mode = FLOAT
+-      return i
+-    }
+ 
+-    if(last === '/' && c === '*') {
+-      mode = BLOCK_COMMENT
+-      return i
+-    }
++  //Update vertex counts
++  this.vertexCount      = triVertexCount
++  this.lineVertexCount  = lineVertexCount
+ 
+-    if(last === '/' && c === '/') {
+-      mode = LINE_COMMENT
+-      return i
++  //Update buffers
++  this.pointBuffer.update(positionArray)
++  this.colorBuffer.update(colorArray)
++  this.glyphBuffer.update(glyphArray)
++  this.idBuffer.update(new Uint32Array(idArray))
++
++  pool.free(positionArray)
++  pool.free(colorArray)
++  pool.free(glyphArray)
++  pool.free(idArray)
++
++  //Update bounds
++  this.bounds = [lowerBound, upperBound]
++
++  //Save points
++  this.points = points
++
++  //Save number of points
++  this.pointCount = points.length
++}
++
++proto.dispose = function() {
++  //Shaders
++  this.shader.dispose()
++  this.orthoShader.dispose()
++  this.pickPerspectiveShader.dispose()
++  this.pickOrthoShader.dispose()
++
++  //Vertex array
++  this.vao.dispose()
++
++  //Buffers
++  this.pointBuffer.dispose()
++  this.colorBuffer.dispose()
++  this.glyphBuffer.dispose()
++  this.idBuffer.dispose()
++}
++
++function createPointCloud(options) {
++  var gl = options.gl
++
++  var shader                = shaders.createPerspective(gl)
++  var orthoShader           = shaders.createOrtho(gl)
++  var projectShader         = shaders.createProject(gl)
++  var pickPerspectiveShader = shaders.createPickPerspective(gl)
++  var pickOrthoShader       = shaders.createPickOrtho(gl)
++  var pickProjectShader     = shaders.createPickProject(gl)
++
++  var pointBuffer = createBuffer(gl)
++  var colorBuffer = createBuffer(gl)
++  var glyphBuffer = createBuffer(gl)
++  var idBuffer    = createBuffer(gl)
++  var vao = createVAO(gl, [
++    {
++      buffer: pointBuffer,
++      size: 3,
++      type: gl.FLOAT
++    },
++    {
++      buffer: colorBuffer,
++      size: 4,
++      type: gl.FLOAT
++    },
++    {
++      buffer: glyphBuffer,
++      size: 2,
++      type: gl.FLOAT
++    },
++    {
++      buffer: idBuffer,
++      size: 4,
++      type: gl.UNSIGNED_BYTE,
++      normalized: true
+     }
++  ])
+ 
+-    if(c === '.' && content.length) {
+-      while(determine_operator(content));
++  var pointCloud = new PointCloud(
++    gl,
++    shader,
++    orthoShader,
++    projectShader,
++    pointBuffer,
++    colorBuffer,
++    glyphBuffer,
++    idBuffer,
++    vao,
++    pickPerspectiveShader,
++    pickOrthoShader,
++    pickProjectShader)
+ 
+-      mode = FLOAT
+-      return i
+-    }
++  pointCloud.update(options)
+ 
+-    if(c === ';' || c === ')' || c === '(') {
+-      if(content.length) while(determine_operator(content));
+-      token(c)
+-      mode = NORMAL
+-      return i + 1
+-    }
++  return pointCloud
++}
+ 
+-    var is_composite_operator = content.length === 2 && c !== '='
+-    if(/[\w_\d\s]/.test(c) || is_composite_operator) {
+-      while(determine_operator(content));
+-      mode = NORMAL
+-      return i
+-    }
++},{"./lib/glyphs":184,"./lib/shaders":185,"gl-buffer":121,"gl-mat4/multiply":144,"gl-vao":206,"typedarray-pool":449}],187:[function(require,module,exports){
++'use strict'
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
+ 
+-  function determine_operator(buf) {
+-    var j = 0
+-      , idx
+-      , res
+ 
+-    do {
+-      idx = operators.indexOf(buf.slice(0, buf.length + j).join(''))
+-      res = operators[idx]
++exports.boxVertex = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n"
++exports.boxFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"
+ 
+-      if(idx === -1) {
+-        if(j-- + buf.length > 0) continue
+-        res = buf.slice(0, 1).join('')
+-      }
++},{}],188:[function(require,module,exports){
++'use strict'
+ 
+-      token(res)
++var createShader = require('gl-shader')
++var createBuffer = require('gl-buffer')
+ 
+-      start += res.length
+-      content = content.slice(res.length)
+-      return content.length
+-    } while(1)
+-  }
++var SHADERS = require('./lib/shaders')
+ 
+-  function hex() {
+-    if(/[^a-fA-F0-9]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
++module.exports = createSelectBox
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
++function SelectBox(plot, boxBuffer, boxShader) {
++  this.plot = plot
++  this.boxBuffer = boxBuffer
++  this.boxShader = boxShader
+ 
+-  function integer() {
+-    if(c === '.') {
+-      content.push(c)
+-      mode = FLOAT
+-      last = c
+-      return i + 1
+-    }
++  this.enabled = true
+ 
+-    if(/[eE]/.test(c)) {
+-      content.push(c)
+-      mode = FLOAT
+-      last = c
+-      return i + 1
+-    }
++  this.selectBox = [Infinity,Infinity,-Infinity,-Infinity]
+ 
+-    if(c === 'x' && content.length === 1 && content[0] === '0') {
+-      mode = HEX
+-      content.push(c)
+-      last = c
+-      return i + 1
+-    }
++  this.borderColor = [0,0,0,1]
++  this.innerFill   = false
++  this.innerColor  = [0,0,0,0.25]
++  this.outerFill   = true
++  this.outerColor  = [0,0,0,0.5]
++  this.borderWidth = 10
++}
+ 
+-    if(/[^\d]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
++var proto = SelectBox.prototype
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
++proto.draw = function() {
++  if(!this.enabled) {
++    return
+   }
+ 
+-  function decimal() {
+-    if(c === 'f') {
+-      content.push(c)
+-      last = c
+-      i += 1
+-    }
++  var plot         = this.plot
++  var selectBox    = this.selectBox
++  var lineWidth    = this.borderWidth
+ 
+-    if(/[eE]/.test(c)) {
+-      content.push(c)
+-      last = c
+-      return i + 1
+-    }
++  var innerFill    = this.innerFill
++  var innerColor   = this.innerColor
++  var outerFill    = this.outerFill
++  var outerColor   = this.outerColor
++  var borderColor  = this.borderColor
+ 
+-    if (c === '-' && /[eE]/.test(last)) {
+-      content.push(c)
+-      last = c
+-      return i + 1
+-    }
++  var boxes        = plot.box
++  var screenBox    = plot.screenBox
++  var dataBox      = plot.dataBox
++  var viewBox      = plot.viewBox
++  var pixelRatio   = plot.pixelRatio
+ 
+-    if(/[^\d]/.test(c)) {
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
++  //Map select box into pixel coordinates
++  var loX = (selectBox[0]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
++  var loY = (selectBox[1]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
++  var hiX = (selectBox[2]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
++  var hiY = (selectBox[3]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
+ 
+-    content.push(c)
+-    last = c
+-    return i + 1
+-  }
++  loX = Math.max(loX, viewBox[0])
++  loY = Math.max(loY, viewBox[1])
++  hiX = Math.min(hiX, viewBox[2])
++  hiY = Math.min(hiY, viewBox[3])
+ 
+-  function readtoken() {
+-    if(/[^\d\w_]/.test(c)) {
+-      var contentstr = content.join('')
+-      if(allLiterals.indexOf(contentstr) > -1) {
+-        mode = KEYWORD
+-      } else if(allBuiltins.indexOf(contentstr) > -1) {
+-        mode = BUILTIN
+-      } else {
+-        mode = IDENT
+-      }
+-      token(content.join(''))
+-      mode = NORMAL
+-      return i
+-    }
+-    content.push(c)
+-    last = c
+-    return i + 1
++  if(hiX < loX || hiY < loY) {
++    return
+   }
+-}
+-
+-},{"./lib/builtins":236,"./lib/builtins-300es":235,"./lib/literals":238,"./lib/literals-300es":237,"./lib/operators":239}],235:[function(require,module,exports){
+-// 300es builtins/reserved words that were previously valid in v100
+-var v100 = require('./builtins')
+-
+-// The texture2D|Cube functions have been removed
+-// And the gl_ features are updated
+-v100 = v100.slice().filter(function (b) {
+-  return !/^(gl\_|texture)/.test(b)
+-})
+-
+-module.exports = v100.concat([
+-  // the updated gl_ constants
+-    'gl_VertexID'
+-  , 'gl_InstanceID'
+-  , 'gl_Position'
+-  , 'gl_PointSize'
+-  , 'gl_FragCoord'
+-  , 'gl_FrontFacing'
+-  , 'gl_FragDepth'
+-  , 'gl_PointCoord'
+-  , 'gl_MaxVertexAttribs'
+-  , 'gl_MaxVertexUniformVectors'
+-  , 'gl_MaxVertexOutputVectors'
+-  , 'gl_MaxFragmentInputVectors'
+-  , 'gl_MaxVertexTextureImageUnits'
+-  , 'gl_MaxCombinedTextureImageUnits'
+-  , 'gl_MaxTextureImageUnits'
+-  , 'gl_MaxFragmentUniformVectors'
+-  , 'gl_MaxDrawBuffers'
+-  , 'gl_MinProgramTexelOffset'
+-  , 'gl_MaxProgramTexelOffset'
+-  , 'gl_DepthRangeParameters'
+-  , 'gl_DepthRange'
+-
+-  // other builtins
+-  , 'trunc'
+-  , 'round'
+-  , 'roundEven'
+-  , 'isnan'
+-  , 'isinf'
+-  , 'floatBitsToInt'
+-  , 'floatBitsToUint'
+-  , 'intBitsToFloat'
+-  , 'uintBitsToFloat'
+-  , 'packSnorm2x16'
+-  , 'unpackSnorm2x16'
+-  , 'packUnorm2x16'
+-  , 'unpackUnorm2x16'
+-  , 'packHalf2x16'
+-  , 'unpackHalf2x16'
+-  , 'outerProduct'
+-  , 'transpose'
+-  , 'determinant'
+-  , 'inverse'
+-  , 'texture'
+-  , 'textureSize'
+-  , 'textureProj'
+-  , 'textureLod'
+-  , 'textureOffset'
+-  , 'texelFetch'
+-  , 'texelFetchOffset'
+-  , 'textureProjOffset'
+-  , 'textureLodOffset'
+-  , 'textureProjLod'
+-  , 'textureProjLodOffset'
+-  , 'textureGrad'
+-  , 'textureGradOffset'
+-  , 'textureProjGrad'
+-  , 'textureProjGradOffset'
+-])
+ 
+-},{"./builtins":236}],236:[function(require,module,exports){
+-module.exports = [
+-  // Keep this list sorted
+-  'abs'
+-  , 'acos'
+-  , 'all'
+-  , 'any'
+-  , 'asin'
+-  , 'atan'
+-  , 'ceil'
+-  , 'clamp'
+-  , 'cos'
+-  , 'cross'
+-  , 'dFdx'
+-  , 'dFdy'
+-  , 'degrees'
+-  , 'distance'
+-  , 'dot'
+-  , 'equal'
+-  , 'exp'
+-  , 'exp2'
+-  , 'faceforward'
+-  , 'floor'
+-  , 'fract'
+-  , 'gl_BackColor'
+-  , 'gl_BackLightModelProduct'
+-  , 'gl_BackLightProduct'
+-  , 'gl_BackMaterial'
+-  , 'gl_BackSecondaryColor'
+-  , 'gl_ClipPlane'
+-  , 'gl_ClipVertex'
+-  , 'gl_Color'
+-  , 'gl_DepthRange'
+-  , 'gl_DepthRangeParameters'
+-  , 'gl_EyePlaneQ'
+-  , 'gl_EyePlaneR'
+-  , 'gl_EyePlaneS'
+-  , 'gl_EyePlaneT'
+-  , 'gl_Fog'
+-  , 'gl_FogCoord'
+-  , 'gl_FogFragCoord'
+-  , 'gl_FogParameters'
+-  , 'gl_FragColor'
+-  , 'gl_FragCoord'
+-  , 'gl_FragData'
+-  , 'gl_FragDepth'
+-  , 'gl_FragDepthEXT'
+-  , 'gl_FrontColor'
+-  , 'gl_FrontFacing'
+-  , 'gl_FrontLightModelProduct'
+-  , 'gl_FrontLightProduct'
+-  , 'gl_FrontMaterial'
+-  , 'gl_FrontSecondaryColor'
+-  , 'gl_LightModel'
+-  , 'gl_LightModelParameters'
+-  , 'gl_LightModelProducts'
+-  , 'gl_LightProducts'
+-  , 'gl_LightSource'
+-  , 'gl_LightSourceParameters'
+-  , 'gl_MaterialParameters'
+-  , 'gl_MaxClipPlanes'
+-  , 'gl_MaxCombinedTextureImageUnits'
+-  , 'gl_MaxDrawBuffers'
+-  , 'gl_MaxFragmentUniformComponents'
+-  , 'gl_MaxLights'
+-  , 'gl_MaxTextureCoords'
+-  , 'gl_MaxTextureImageUnits'
+-  , 'gl_MaxTextureUnits'
+-  , 'gl_MaxVaryingFloats'
+-  , 'gl_MaxVertexAttribs'
+-  , 'gl_MaxVertexTextureImageUnits'
+-  , 'gl_MaxVertexUniformComponents'
+-  , 'gl_ModelViewMatrix'
+-  , 'gl_ModelViewMatrixInverse'
+-  , 'gl_ModelViewMatrixInverseTranspose'
+-  , 'gl_ModelViewMatrixTranspose'
+-  , 'gl_ModelViewProjectionMatrix'
+-  , 'gl_ModelViewProjectionMatrixInverse'
+-  , 'gl_ModelViewProjectionMatrixInverseTranspose'
+-  , 'gl_ModelViewProjectionMatrixTranspose'
+-  , 'gl_MultiTexCoord0'
+-  , 'gl_MultiTexCoord1'
+-  , 'gl_MultiTexCoord2'
+-  , 'gl_MultiTexCoord3'
+-  , 'gl_MultiTexCoord4'
+-  , 'gl_MultiTexCoord5'
+-  , 'gl_MultiTexCoord6'
+-  , 'gl_MultiTexCoord7'
+-  , 'gl_Normal'
+-  , 'gl_NormalMatrix'
+-  , 'gl_NormalScale'
+-  , 'gl_ObjectPlaneQ'
+-  , 'gl_ObjectPlaneR'
+-  , 'gl_ObjectPlaneS'
+-  , 'gl_ObjectPlaneT'
+-  , 'gl_Point'
+-  , 'gl_PointCoord'
+-  , 'gl_PointParameters'
+-  , 'gl_PointSize'
+-  , 'gl_Position'
+-  , 'gl_ProjectionMatrix'
+-  , 'gl_ProjectionMatrixInverse'
+-  , 'gl_ProjectionMatrixInverseTranspose'
+-  , 'gl_ProjectionMatrixTranspose'
+-  , 'gl_SecondaryColor'
+-  , 'gl_TexCoord'
+-  , 'gl_TextureEnvColor'
+-  , 'gl_TextureMatrix'
+-  , 'gl_TextureMatrixInverse'
+-  , 'gl_TextureMatrixInverseTranspose'
+-  , 'gl_TextureMatrixTranspose'
+-  , 'gl_Vertex'
+-  , 'greaterThan'
+-  , 'greaterThanEqual'
+-  , 'inversesqrt'
+-  , 'length'
+-  , 'lessThan'
+-  , 'lessThanEqual'
+-  , 'log'
+-  , 'log2'
+-  , 'matrixCompMult'
+-  , 'max'
+-  , 'min'
+-  , 'mix'
+-  , 'mod'
+-  , 'normalize'
+-  , 'not'
+-  , 'notEqual'
+-  , 'pow'
+-  , 'radians'
+-  , 'reflect'
+-  , 'refract'
+-  , 'sign'
+-  , 'sin'
+-  , 'smoothstep'
+-  , 'sqrt'
+-  , 'step'
+-  , 'tan'
+-  , 'texture2D'
+-  , 'texture2DLod'
+-  , 'texture2DProj'
+-  , 'texture2DProjLod'
+-  , 'textureCube'
+-  , 'textureCubeLod'
+-  , 'texture2DLodEXT'
+-  , 'texture2DProjLodEXT'
+-  , 'textureCubeLodEXT'
+-  , 'texture2DGradEXT'
+-  , 'texture2DProjGradEXT'
+-  , 'textureCubeGradEXT'
+-]
++  boxes.bind()
+ 
+-},{}],237:[function(require,module,exports){
+-var v100 = require('./literals')
++  //Draw box
++  var screenWidth  = screenBox[2] - screenBox[0]
++  var screenHeight = screenBox[3] - screenBox[1]
+ 
+-module.exports = v100.slice().concat([
+-   'layout'
+-  , 'centroid'
+-  , 'smooth'
+-  , 'case'
+-  , 'mat2x2'
+-  , 'mat2x3'
+-  , 'mat2x4'
+-  , 'mat3x2'
+-  , 'mat3x3'
+-  , 'mat3x4'
+-  , 'mat4x2'
+-  , 'mat4x3'
+-  , 'mat4x4'
+-  , 'uint'
+-  , 'uvec2'
+-  , 'uvec3'
+-  , 'uvec4'
+-  , 'samplerCubeShadow'
+-  , 'sampler2DArray'
+-  , 'sampler2DArrayShadow'
+-  , 'isampler2D'
+-  , 'isampler3D'
+-  , 'isamplerCube'
+-  , 'isampler2DArray'
+-  , 'usampler2D'
+-  , 'usampler3D'
+-  , 'usamplerCube'
+-  , 'usampler2DArray'
+-  , 'coherent'
+-  , 'restrict'
+-  , 'readonly'
+-  , 'writeonly'
+-  , 'resource'
+-  , 'atomic_uint'
+-  , 'noperspective'
+-  , 'patch'
+-  , 'sample'
+-  , 'subroutine'
+-  , 'common'
+-  , 'partition'
+-  , 'active'
+-  , 'filter'
+-  , 'image1D'
+-  , 'image2D'
+-  , 'image3D'
+-  , 'imageCube'
+-  , 'iimage1D'
+-  , 'iimage2D'
+-  , 'iimage3D'
+-  , 'iimageCube'
+-  , 'uimage1D'
+-  , 'uimage2D'
+-  , 'uimage3D'
+-  , 'uimageCube'
+-  , 'image1DArray'
+-  , 'image2DArray'
+-  , 'iimage1DArray'
+-  , 'iimage2DArray'
+-  , 'uimage1DArray'
+-  , 'uimage2DArray'
+-  , 'image1DShadow'
+-  , 'image2DShadow'
+-  , 'image1DArrayShadow'
+-  , 'image2DArrayShadow'
+-  , 'imageBuffer'
+-  , 'iimageBuffer'
+-  , 'uimageBuffer'
+-  , 'sampler1DArray'
+-  , 'sampler1DArrayShadow'
+-  , 'isampler1D'
+-  , 'isampler1DArray'
+-  , 'usampler1D'
+-  , 'usampler1DArray'
+-  , 'isampler2DRect'
+-  , 'usampler2DRect'
+-  , 'samplerBuffer'
+-  , 'isamplerBuffer'
+-  , 'usamplerBuffer'
+-  , 'sampler2DMS'
+-  , 'isampler2DMS'
+-  , 'usampler2DMS'
+-  , 'sampler2DMSArray'
+-  , 'isampler2DMSArray'
+-  , 'usampler2DMSArray'
+-])
++  if(this.outerFill) {
++    boxes.drawBox(0, 0, screenWidth, loY, outerColor)
++    boxes.drawBox(0, loY, loX, hiY, outerColor)
++    boxes.drawBox(0, hiY, screenWidth, screenHeight, outerColor)
++    boxes.drawBox(hiX, loY, screenWidth, hiY, outerColor)
++  }
+ 
+-},{"./literals":238}],238:[function(require,module,exports){
+-module.exports = [
+-  // current
+-    'precision'
+-  , 'highp'
+-  , 'mediump'
+-  , 'lowp'
+-  , 'attribute'
+-  , 'const'
+-  , 'uniform'
+-  , 'varying'
+-  , 'break'
+-  , 'continue'
+-  , 'do'
+-  , 'for'
+-  , 'while'
+-  , 'if'
+-  , 'else'
+-  , 'in'
+-  , 'out'
+-  , 'inout'
+-  , 'float'
+-  , 'int'
+-  , 'void'
+-  , 'bool'
+-  , 'true'
+-  , 'false'
+-  , 'discard'
+-  , 'return'
+-  , 'mat2'
+-  , 'mat3'
+-  , 'mat4'
+-  , 'vec2'
+-  , 'vec3'
+-  , 'vec4'
+-  , 'ivec2'
+-  , 'ivec3'
+-  , 'ivec4'
+-  , 'bvec2'
+-  , 'bvec3'
+-  , 'bvec4'
+-  , 'sampler1D'
+-  , 'sampler2D'
+-  , 'sampler3D'
+-  , 'samplerCube'
+-  , 'sampler1DShadow'
+-  , 'sampler2DShadow'
+-  , 'struct'
++  if(this.innerFill) {
++    boxes.drawBox(loX, loY, hiX, hiY, innerColor)
++  }
+ 
+-  // future
+-  , 'asm'
+-  , 'class'
+-  , 'union'
+-  , 'enum'
+-  , 'typedef'
+-  , 'template'
+-  , 'this'
+-  , 'packed'
+-  , 'goto'
+-  , 'switch'
+-  , 'default'
+-  , 'inline'
+-  , 'noinline'
+-  , 'volatile'
+-  , 'public'
+-  , 'static'
+-  , 'extern'
+-  , 'external'
+-  , 'interface'
+-  , 'long'
+-  , 'short'
+-  , 'double'
+-  , 'half'
+-  , 'fixed'
+-  , 'unsigned'
+-  , 'input'
+-  , 'output'
+-  , 'hvec2'
+-  , 'hvec3'
+-  , 'hvec4'
+-  , 'dvec2'
+-  , 'dvec3'
+-  , 'dvec4'
+-  , 'fvec2'
+-  , 'fvec3'
+-  , 'fvec4'
+-  , 'sampler2DRect'
+-  , 'sampler3DRect'
+-  , 'sampler2DRectShadow'
+-  , 'sizeof'
+-  , 'cast'
+-  , 'namespace'
+-  , 'using'
+-]
++  //Draw border
++  if(lineWidth > 0) {
+ 
+-},{}],239:[function(require,module,exports){
+-module.exports = [
+-    '<<='
+-  , '>>='
+-  , '++'
+-  , '--'
+-  , '<<'
+-  , '>>'
+-  , '<='
+-  , '>='
+-  , '=='
+-  , '!='
+-  , '&&'
+-  , '||'
+-  , '+='
+-  , '-='
+-  , '*='
+-  , '/='
+-  , '%='
+-  , '&='
+-  , '^^'
+-  , '^='
+-  , '|='
+-  , '('
+-  , ')'
+-  , '['
+-  , ']'
+-  , '.'
+-  , '!'
+-  , '~'
+-  , '*'
+-  , '/'
+-  , '%'
+-  , '+'
+-  , '-'
+-  , '<'
+-  , '>'
+-  , '&'
+-  , '^'
+-  , '|'
+-  , '?'
+-  , ':'
+-  , '='
+-  , ','
+-  , ';'
+-  , '{'
+-  , '}'
+-]
++    //Draw border
++    var w = lineWidth * pixelRatio
++    boxes.drawBox(loX-w, loY-w, hiX+w, loY+w, borderColor)
++    boxes.drawBox(loX-w, hiY-w, hiX+w, hiY+w, borderColor)
++    boxes.drawBox(loX-w, loY-w, loX+w, hiY+w, borderColor)
++    boxes.drawBox(hiX-w, loY-w, hiX+w, hiY+w, borderColor)
++  }
++}
+ 
+-},{}],240:[function(require,module,exports){
+-var tokenize = require('./index')
++proto.update = function(options) {
++  options = options || {}
+ 
+-module.exports = tokenizeString
++  this.innerFill    = !!options.innerFill
++  this.outerFill    = !!options.outerFill
++  this.innerColor   = (options.innerColor   || [0,0,0,0.5]).slice()
++  this.outerColor   = (options.outerColor   || [0,0,0,0.5]).slice()
++  this.borderColor  = (options.borderColor || [0,0,0,1]).slice()
++  this.borderWidth  = options.borderWidth || 0
++  this.selectBox    = (options.selectBox || this.selectBox).slice()
++}
+ 
+-function tokenizeString(str, opt) {
+-  var generator = tokenize(opt)
+-  var tokens = []
++proto.dispose = function() {
++  this.boxBuffer.dispose()
++  this.boxShader.dispose()
++  this.plot.removeOverlay(this)
++}
+ 
+-  tokens = tokens.concat(generator(str))
+-  tokens = tokens.concat(generator(null))
++function createSelectBox(plot, options) {
++  var gl = plot.gl
++  var buffer = createBuffer(gl, [
++    0, 0,
++    0, 1,
++    1, 0,
++    1, 1 ])
++  var shader = createShader(gl, SHADERS.boxVertex, SHADERS.boxFragment)
++  var selectBox = new SelectBox(plot, buffer, shader)
++  selectBox.update(options)
++  plot.addOverlay(selectBox)
++  return selectBox
++}
+ 
+-  return tokens
++},{"./lib/shaders":187,"gl-buffer":121,"gl-shader":190}],189:[function(require,module,exports){
++'use strict'
++
++module.exports = createSelectBuffer
++
++var createFBO = require('gl-fbo')
++var pool      = require('typedarray-pool')
++var ndarray   = require('ndarray')
++
++var nextPow2  = require('bit-twiddle').nextPow2
++
++var selectRange = require('cwise/lib/wrapper')({"args":["array",{"offset":[0,0,1],"array":0},{"offset":[0,0,2],"array":0},{"offset":[0,0,3],"array":0},"scalar","scalar","index"],"pre":{"body":"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"body":{"body":"{if(_inline_46_arg0_<255||_inline_46_arg1_<255||_inline_46_arg2_<255||_inline_46_arg3_<255){var _inline_46_l=_inline_46_arg4_-_inline_46_arg6_[0],_inline_46_a=_inline_46_arg5_-_inline_46_arg6_[1],_inline_46_f=_inline_46_l*_inline_46_l+_inline_46_a*_inline_46_a;_inline_46_f<this_closestD2&&(this_closestD2=_inline_46_f,this_closestX=_inline_46_arg6_[0],this_closestY=_inline_46_arg6_[1])}}","args":[{"name":"_inline_46_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg4_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg5_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_46_arg6_","lvalue":false,"rvalue":true,"count":4}],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":["_inline_46_a","_inline_46_f","_inline_46_l"]},"post":{"body":"{return[this_closestX,this_closestY,this_closestD2]}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
++
++function SelectResult(x, y, id, value, distance) {
++  this.coord = [x, y]
++  this.id = id
++  this.value = value
++  this.distance = distance
+ }
+ 
+-},{"./index":234}],241:[function(require,module,exports){
+-"use strict"
++function SelectBuffer(gl, fbo, buffer) {
++  this.gl     = gl
++  this.fbo    = fbo
++  this.buffer = buffer
++  this._readTimeout = null
++  var self = this
+ 
+-//High level idea:
+-// 1. Use Clarkson's incremental construction to find convex hull
+-// 2. Point location in triangulation by jump and walk
++  this._readCallback = function() {
++    if(!self.gl) {
++      return
++    }
++    fbo.bind()
++    gl.readPixels(0,0,fbo.shape[0],fbo.shape[1],gl.RGBA,gl.UNSIGNED_BYTE,self.buffer)
++    self._readTimeout = null
++  }
++}
+ 
+-module.exports = incrementalConvexHull
++var proto = SelectBuffer.prototype
+ 
+-var orient = require("robust-orientation")
+-var compareCell = require("simplicial-complex").compareCells
++Object.defineProperty(proto, 'shape', {
++  get: function() {
++    if(!this.gl) {
++      return [0,0]
++    }
++    return this.fbo.shape.slice()
++  },
++  set: function(v) {
++    if(!this.gl) {
++      return
++    }
++    this.fbo.shape = v
++    var c = this.fbo.shape[0]
++    var r = this.fbo.shape[1]
++    if(r*c*4 > this.buffer.length) {
++      pool.free(this.buffer)
++      var buffer = this.buffer = pool.mallocUint8(nextPow2(r*c*4))
++      for(var i=0; i<r*c*4; ++i) {
++        buffer[i] = 0xff
++      }
++    }
++    return v
++  }
++})
+ 
+-function compareInt(a, b) {
+-  return a - b
++proto.begin = function() {
++  var gl = this.gl
++  var shape = this.shape
++  if(!gl) {
++    return
++  }
++
++  this.fbo.bind()
++  gl.clearColor(1,1,1,1)
++  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
+ }
+ 
+-function Simplex(vertices, adjacent, boundary) {
+-  this.vertices = vertices
+-  this.adjacent = adjacent
+-  this.boundary = boundary
+-  this.lastVisited = -1
++proto.end = function() {
++  var gl = this.gl
++  if(!gl) {
++    return
++  }
++  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
++  if(!this._readTimeout) {
++    clearTimeout(this._readTimeout)
++  }
++  this._readTimeout = setTimeout(this._readCallback, 1)
+ }
+ 
+-Simplex.prototype.flip = function() {
+-  var t = this.vertices[0]
+-  this.vertices[0] = this.vertices[1]
+-  this.vertices[1] = t
+-  var u = this.adjacent[0]
+-  this.adjacent[0] = this.adjacent[1]
+-  this.adjacent[1] = u
++proto.query = function(x, y, radius) {
++  if(!this.gl) {
++    return null
++  }
++
++  var shape = this.fbo.shape.slice()
++
++  x = x|0
++  y = y|0
++  if(typeof radius !== 'number') {
++    radius = 1.0
++  }
++
++  var x0 = Math.min(Math.max(x - radius, 0), shape[0])|0
++  var x1 = Math.min(Math.max(x + radius, 0), shape[0])|0
++  var y0 = Math.min(Math.max(y - radius, 0), shape[1])|0
++  var y1 = Math.min(Math.max(y + radius, 0), shape[1])|0
++
++  if(x1 <= x0 || y1 <= y0) {
++    return null
++  }
++
++  var dims   = [x1-x0,y1-y0]
++  var region = ndarray(
++    this.buffer,
++    [dims[0], dims[1], 4],
++    [4, shape[0]*4, 1],
++    4*(x0 + shape[0]*y0));
++
++  var closest = selectRange(region.hi(dims[0],dims[1],1), radius, radius)
++  var dx = closest[0]
++  var dy = closest[1]
++  if(dx < 0 || Math.pow(this.radius, 2) < closest[2]) {
++    return null
++  }
++
++  var c0 = region.get(dx, dy, 0)
++  var c1 = region.get(dx, dy, 1)
++  var c2 = region.get(dx, dy, 2)
++  var c3 = region.get(dx, dy, 3)
++
++  return new SelectResult(
++     (dx + x0)|0,
++     (dy + y0)|0,
++     c0,
++     [c1, c2, c3],
++     Math.sqrt(closest[2]))
+ }
+ 
+-function GlueFacet(vertices, cell, index) {
+-  this.vertices = vertices
+-  this.cell = cell
+-  this.index = index
++proto.dispose = function() {
++  if(!this.gl) {
++    return
++  }
++  this.fbo.dispose()
++  pool.free(this.buffer)
++  this.gl = null
++  if(this._readTimeout) {
++    clearTimeout(this._readTimeout)
++  }
+ }
+ 
+-function compareGlue(a, b) {
+-  return compareCell(a.vertices, b.vertices)
++function createSelectBuffer(gl, shape) {
++  var fbo = createFBO(gl, shape)
++  var buffer = pool.mallocUint8(shape[0]*shape[1]*4)
++  return new SelectBuffer(gl, fbo, buffer)
+ }
+ 
+-function bakeOrient(d) {
+-  var code = ["function orient(){var tuple=this.tuple;return test("]
+-  for(var i=0; i<=d; ++i) {
+-    if(i > 0) {
+-      code.push(",")
+-    }
+-    code.push("tuple[", i, "]")
++},{"bit-twiddle":49,"cwise/lib/wrapper":89,"gl-fbo":128,"ndarray":385,"typedarray-pool":449}],190:[function(require,module,exports){
++'use strict'
++
++var createUniformWrapper   = require('./lib/create-uniforms')
++var createAttributeWrapper = require('./lib/create-attributes')
++var makeReflect            = require('./lib/reflect')
++var shaderCache            = require('./lib/shader-cache')
++var runtime                = require('./lib/runtime-reflect')
++var GLError                = require("./lib/GLError")
++
++//Shader object
++function Shader(gl) {
++  this.gl         = gl
++  this.gl.lastAttribCount = 0  // fixme where else should we store info, safe but not nice on the gl object
++
++  //Default initialize these to null
++  this._vref      =
++  this._fref      =
++  this._relink    =
++  this.vertShader =
++  this.fragShader =
++  this.program    =
++  this.attributes =
++  this.uniforms   =
++  this.types      = null
++}
++
++var proto = Shader.prototype
++
++proto.bind = function() {
++  if(!this.program) {
++    this._relink()
+   }
+-  code.push(")}return orient")
+-  var proc = new Function("test", code.join(""))
+-  var test = orient[d+1]
+-  if(!test) {
+-    test = orient
++
++  // ensuring that we have the right number of enabled vertex attributes
++  var i
++  var newAttribCount = this.gl.getProgramParameter(this.program, this.gl.ACTIVE_ATTRIBUTES) // more robust approach
++  //var newAttribCount = Object.keys(this.attributes).length // avoids the probably immaterial introspection slowdown
++  var oldAttribCount = this.gl.lastAttribCount
++  if(newAttribCount > oldAttribCount) {
++    for(i = oldAttribCount; i < newAttribCount; i++) {
++      this.gl.enableVertexAttribArray(i)
++    }
++  } else if(oldAttribCount > newAttribCount) {
++    for(i = newAttribCount; i < oldAttribCount; i++) {
++      this.gl.disableVertexAttribArray(i)
++    }
+   }
+-  return proc(test)
++
++  this.gl.lastAttribCount = newAttribCount
++
++  this.gl.useProgram(this.program)
+ }
+ 
+-var BAKED = []
++proto.dispose = function() {
+ 
+-function Triangulation(dimension, vertices, simplices) {
+-  this.dimension = dimension
+-  this.vertices = vertices
+-  this.simplices = simplices
+-  this.interior = simplices.filter(function(c) {
+-    return !c.boundary
+-  })
++  // disabling vertex attributes so new shader starts with zero
++  // and it's also useful if all shaders are disposed but the
++  // gl context is reused for subsequent replotting
++  var oldAttribCount = this.gl.lastAttribCount
++  for (var i = 0; i < oldAttribCount; i++) {
++    this.gl.disableVertexAttribArray(i)
++  }
++  this.gl.lastAttribCount = 0
+ 
+-  this.tuple = new Array(dimension+1)
+-  for(var i=0; i<=dimension; ++i) {
+-    this.tuple[i] = this.vertices[i]
++  if(this._fref) {
++    this._fref.dispose()
++  }
++  if(this._vref) {
++    this._vref.dispose()
+   }
++  this.attributes =
++  this.types      =
++  this.vertShader =
++  this.fragShader =
++  this.program    =
++  this._relink    =
++  this._fref      =
++  this._vref      = null
++}
+ 
+-  var o = BAKED[dimension]
+-  if(!o) {
+-    o = BAKED[dimension] = bakeOrient(dimension)
++function compareAttributes(a, b) {
++  if(a.name < b.name) {
++    return -1
+   }
+-  this.orient = o
++  return 1
+ }
+ 
+-var proto = Triangulation.prototype
++//Update export hook for glslify-live
++proto.update = function(
++    vertSource
++  , fragSource
++  , uniforms
++  , attributes) {
+ 
+-//Degenerate situation where we are on boundary, but coplanar to face
+-proto.handleBoundaryDegeneracy = function(cell, point) {
+-  var d = this.dimension
+-  var n = this.vertices.length - 1
+-  var tuple = this.tuple
+-  var verts = this.vertices
++  //If only one object passed, assume glslify style output
++  if(!fragSource || arguments.length === 1) {
++    var obj = vertSource
++    vertSource = obj.vertex
++    fragSource = obj.fragment
++    uniforms   = obj.uniforms
++    attributes = obj.attributes
++  }
+ 
+-  //Dumb solution: Just do dfs from boundary cell until we find any peak, or terminate
+-  var toVisit = [ cell ]
+-  cell.lastVisited = -n
+-  while(toVisit.length > 0) {
+-    cell = toVisit.pop()
+-    var cellVerts = cell.vertices
+-    var cellAdj = cell.adjacent
+-    for(var i=0; i<=d; ++i) {
+-      var neighbor = cellAdj[i]
+-      if(!neighbor.boundary || neighbor.lastVisited <= -n) {
+-        continue
+-      }
+-      var nv = neighbor.vertices
+-      for(var j=0; j<=d; ++j) {
+-        var vv = nv[j]
+-        if(vv < 0) {
+-          tuple[j] = point
++  var wrapper = this
++  var gl      = wrapper.gl
++
++  //Compile vertex and fragment shaders
++  var pvref = wrapper._vref
++  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
++  if(pvref) {
++    pvref.dispose()
++  }
++  wrapper.vertShader = wrapper._vref.shader
++  var pfref = this._fref
++  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
++  if(pfref) {
++    pfref.dispose()
++  }
++  wrapper.fragShader = wrapper._fref.shader
++
++  //If uniforms/attributes is not specified, use RT reflection
++  if(!uniforms || !attributes) {
++
++    //Create initial test program
++    var testProgram = gl.createProgram()
++    gl.attachShader(testProgram, wrapper.fragShader)
++    gl.attachShader(testProgram, wrapper.vertShader)
++    gl.linkProgram(testProgram)
++    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
++      var errLog = gl.getProgramInfoLog(testProgram)
++      throw new GLError(errLog, 'Error linking program:' + errLog)
++    }
++
++    //Load data from runtime
++    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
++    attributes = attributes || runtime.attributes(gl, testProgram)
++
++    //Release test program
++    gl.deleteProgram(testProgram)
++  }
++
++  //Sort attributes lexicographically
++  // overrides undefined WebGL behavior for attribute locations
++  attributes = attributes.slice()
++  attributes.sort(compareAttributes)
++
++  //Convert attribute types, read out locations
++  var attributeUnpacked  = []
++  var attributeNames     = []
++  var attributeLocations = []
++  var i
++  for(i=0; i<attributes.length; ++i) {
++    var attr = attributes[i]
++    if(attr.type.indexOf('mat') >= 0) {
++      var size = attr.type.charAt(attr.type.length-1)|0
++      var locVector = new Array(size)
++      for(var j=0; j<size; ++j) {
++        locVector[j] = attributeLocations.length
++        attributeNames.push(attr.name + '[' + j + ']')
++        if(typeof attr.location === 'number') {
++          attributeLocations.push(attr.location + j)
++        } else if(Array.isArray(attr.location) &&
++                  attr.location.length === size &&
++                  typeof attr.location[j] === 'number') {
++          attributeLocations.push(attr.location[j]|0)
+         } else {
+-          tuple[j] = verts[vv]
++          attributeLocations.push(-1)
+         }
+       }
+-      var o = this.orient()
+-      if(o > 0) {
+-        return neighbor
++      attributeUnpacked.push({
++        name: attr.name,
++        type: attr.type,
++        locations: locVector
++      })
++    } else {
++      attributeUnpacked.push({
++        name: attr.name,
++        type: attr.type,
++        locations: [ attributeLocations.length ]
++      })
++      attributeNames.push(attr.name)
++      if(typeof attr.location === 'number') {
++        attributeLocations.push(attr.location|0)
++      } else {
++        attributeLocations.push(-1)
+       }
+-      neighbor.lastVisited = -n
+-      if(o === 0) {
+-        toVisit.push(neighbor)
++    }
++  }
++
++  //For all unspecified attributes, assign them lexicographically min attribute
++  var curLocation = 0
++  for(i=0; i<attributeLocations.length; ++i) {
++    if(attributeLocations[i] < 0) {
++      while(attributeLocations.indexOf(curLocation) >= 0) {
++        curLocation += 1
+       }
++      attributeLocations[i] = curLocation
+     }
+   }
+-  return null
+-}
+ 
+-proto.walk = function(point, random) {
+-  //Alias local properties
+-  var n = this.vertices.length - 1
+-  var d = this.dimension
+-  var verts = this.vertices
+-  var tuple = this.tuple
++  //Rebuild program and recompute all uniform locations
++  var uniformLocations = new Array(uniforms.length)
++  function relink() {
++    wrapper.program = shaderCache.program(
++        gl
++      , wrapper._vref
++      , wrapper._fref
++      , attributeNames
++      , attributeLocations)
+ 
+-  //Compute initial jump cell
+-  var initIndex = random ? (this.interior.length * Math.random())|0 : (this.interior.length-1)
+-  var cell = this.interior[ initIndex ]
++    for(var i=0; i<uniforms.length; ++i) {
++      uniformLocations[i] = gl.getUniformLocation(
++          wrapper.program
++        , uniforms[i].name)
++    }
++  }
+ 
+-  //Start walking
+-outerLoop:
+-  while(!cell.boundary) {
+-    var cellVerts = cell.vertices
+-    var cellAdj = cell.adjacent
++  //Perform initial linking, reuse program used for reflection
++  relink()
+ 
+-    for(var i=0; i<=d; ++i) {
+-      tuple[i] = verts[cellVerts[i]]
+-    }
+-    cell.lastVisited = n
++  //Save relinking procedure, defer until runtime
++  wrapper._relink = relink
+ 
+-    //Find farthest adjacent cell
+-    for(var i=0; i<=d; ++i) {
+-      var neighbor = cellAdj[i]
+-      if(neighbor.lastVisited >= n) {
+-        continue
+-      }
+-      var prev = tuple[i]
+-      tuple[i] = point
+-      var o = this.orient()
+-      tuple[i] = prev
+-      if(o < 0) {
+-        cell = neighbor
+-        continue outerLoop
+-      } else {
+-        if(!neighbor.boundary) {
+-          neighbor.lastVisited = n
+-        } else {
+-          neighbor.lastVisited = -n
+-        }
+-      }
+-    }
+-    return
++  //Generate type info
++  wrapper.types = {
++    uniforms:   makeReflect(uniforms),
++    attributes: makeReflect(attributes)
+   }
+ 
+-  return cell
++  //Generate attribute wrappers
++  wrapper.attributes = createAttributeWrapper(
++      gl
++    , wrapper
++    , attributeUnpacked
++    , attributeLocations)
++
++  //Generate uniform wrappers
++  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
++      gl
++    , wrapper
++    , uniforms
++    , uniformLocations))
+ }
+ 
+-proto.addPeaks = function(point, cell) {
+-  var n = this.vertices.length - 1
+-  var d = this.dimension
+-  var verts = this.vertices
+-  var tuple = this.tuple
+-  var interior = this.interior
+-  var simplices = this.simplices
++//Compiles and links a shader program with the given attribute and vertex list
++function createShader(
++    gl
++  , vertSource
++  , fragSource
++  , uniforms
++  , attributes) {
+ 
+-  //Walking finished at boundary, time to add peaks
+-  var tovisit = [ cell ]
++  var shader = new Shader(gl)
+ 
+-  //Stretch initial boundary cell into a peak
+-  cell.lastVisited = n
+-  cell.vertices[cell.vertices.indexOf(-1)] = n
+-  cell.boundary = false
+-  interior.push(cell)
++  shader.update(
++      vertSource
++    , fragSource
++    , uniforms
++    , attributes)
+ 
+-  //Record a list of all new boundaries created by added peaks so we can glue them together when we are all done
+-  var glueFacets = []
++  return shader
++}
+ 
+-  //Do a traversal of the boundary walking outward from starting peak
+-  while(tovisit.length > 0) {
+-    //Pop off peak and walk over adjacent cells
+-    var cell = tovisit.pop()
+-    var cellVerts = cell.vertices
+-    var cellAdj = cell.adjacent
+-    var indexOfN = cellVerts.indexOf(n)
+-    if(indexOfN < 0) {
+-      continue
+-    }
++module.exports = createShader
+ 
+-    for(var i=0; i<=d; ++i) {
+-      if(i === indexOfN) {
+-        continue
+-      }
++},{"./lib/GLError":191,"./lib/create-attributes":192,"./lib/create-uniforms":193,"./lib/reflect":194,"./lib/runtime-reflect":195,"./lib/shader-cache":196}],191:[function(require,module,exports){
++function GLError (rawError, shortMessage, longMessage) {
++    this.shortMessage = shortMessage || ''
++    this.longMessage = longMessage || ''
++    this.rawError = rawError || ''
++    this.message =
++      'gl-shader: ' + (shortMessage || rawError || '') +
++      (longMessage ? '\n'+longMessage : '')
++    this.stack = (new Error()).stack
++}
++GLError.prototype = new Error
++GLError.prototype.name = 'GLError'
++GLError.prototype.constructor = GLError
++module.exports = GLError
+ 
+-      //For each boundary neighbor of the cell
+-      var neighbor = cellAdj[i]
+-      if(!neighbor.boundary || neighbor.lastVisited >= n) {
+-        continue
+-      }
++},{}],192:[function(require,module,exports){
++'use strict'
+ 
+-      var nv = neighbor.vertices
++module.exports = createAttributeWrapper
+ 
+-      //Test if neighbor is a peak
+-      if(neighbor.lastVisited !== -n) {      
+-        //Compute orientation of p relative to each boundary peak
+-        var indexOfNeg1 = 0
+-        for(var j=0; j<=d; ++j) {
+-          if(nv[j] < 0) {
+-            indexOfNeg1 = j
+-            tuple[j] = point
+-          } else {
+-            tuple[j] = verts[nv[j]]
+-          }
+-        }
+-        var o = this.orient()
++var GLError = require("./GLError")
+ 
+-        //Test if neighbor cell is also a peak
+-        if(o > 0) {
+-          nv[indexOfNeg1] = n
+-          neighbor.boundary = false
+-          interior.push(neighbor)
+-          tovisit.push(neighbor)
+-          neighbor.lastVisited = n
+-          continue
+-        } else {
+-          neighbor.lastVisited = -n
+-        }
+-      }
++function ShaderAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , constFunc) {
++  this._gl        = gl
++  this._wrapper   = wrapper
++  this._index     = index
++  this._locations = locations
++  this._dimension = dimension
++  this._constFunc = constFunc
++}
+ 
+-      var na = neighbor.adjacent
++var proto = ShaderAttribute.prototype
+ 
+-      //Otherwise, replace neighbor with new face
+-      var vverts = cellVerts.slice()
+-      var vadj = cellAdj.slice()
+-      var ncell = new Simplex(vverts, vadj, true)
+-      simplices.push(ncell)
++proto.pointer = function setAttribPointer(
++    type
++  , normalized
++  , stride
++  , offset) {
+ 
+-      //Connect to neighbor
+-      var opposite = na.indexOf(cell)
+-      if(opposite < 0) {
+-        continue
+-      }
+-      na[opposite] = ncell
+-      vadj[indexOfN] = neighbor
++  var self      = this
++  var gl        = self._gl
++  var location  = self._locations[self._index]
+ 
+-      //Connect to cell
+-      vverts[i] = -1
+-      vadj[i] = cell
+-      cellAdj[i] = ncell
++  gl.vertexAttribPointer(
++      location
++    , self._dimension
++    , type || gl.FLOAT
++    , !!normalized
++    , stride || 0
++    , offset || 0)
++  gl.enableVertexAttribArray(location)
++}
+ 
+-      //Flip facet
+-      ncell.flip()
++proto.set = function(x0, x1, x2, x3) {
++  return this._constFunc(this._locations[this._index], x0, x1, x2, x3)
++}
+ 
+-      //Add to glue list
+-      for(var j=0; j<=d; ++j) {
+-        var uu = vverts[j]
+-        if(uu < 0 || uu === n) {
+-          continue
+-        }
+-        var nface = new Array(d-1)
+-        var nptr = 0
+-        for(var k=0; k<=d; ++k) {
+-          var vv = vverts[k]
+-          if(vv < 0 || k === j) {
+-            continue
+-          }
+-          nface[nptr++] = vv
+-        }
+-        glueFacets.push(new GlueFacet(nface, ncell, j))
+-      }
+-    }
++Object.defineProperty(proto, 'location', {
++  get: function() {
++    return this._locations[this._index]
+   }
+-
+-  //Glue boundary facets together
+-  glueFacets.sort(compareGlue)
+-
+-  for(var i=0; i+1<glueFacets.length; i+=2) {
+-    var a = glueFacets[i]
+-    var b = glueFacets[i+1]
+-    var ai = a.index
+-    var bi = b.index
+-    if(ai < 0 || bi < 0) {
+-      continue
++  , set: function(v) {
++    if(v !== this._locations[this._index]) {
++      this._locations[this._index] = v|0
++      this._wrapper.program = null
+     }
+-    a.cell.adjacent[a.index] = b.cell
+-    b.cell.adjacent[b.index] = a.cell
++    return v|0
+   }
+-}
++})
+ 
+-proto.insert = function(point, random) {
+-  //Add point
+-  var verts = this.vertices
+-  verts.push(point)
++//Adds a vector attribute to obj
++function addVectorAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , obj
++  , name) {
+ 
+-  var cell = this.walk(point, random)
+-  if(!cell) {
+-    return
++  //Construct constant function
++  var constFuncArgs = [ 'gl', 'v' ]
++  var varNames = []
++  for(var i=0; i<dimension; ++i) {
++    constFuncArgs.push('x'+i)
++    varNames.push('x'+i)
+   }
++  constFuncArgs.push(
++    'if(x0.length===void 0){return gl.vertexAttrib' +
++    dimension + 'f(v,' +
++    varNames.join() +
++    ')}else{return gl.vertexAttrib' +
++    dimension +
++    'fv(v,x0)}')
++  var constFunc = Function.apply(null, constFuncArgs)
+ 
+-  //Alias local properties
+-  var d = this.dimension
+-  var tuple = this.tuple
++  //Create attribute wrapper
++  var attr = new ShaderAttribute(
++      gl
++    , wrapper
++    , index
++    , locations
++    , dimension
++    , constFunc)
+ 
+-  //Degenerate case: If point is coplanar to cell, then walk until we find a non-degenerate boundary
+-  for(var i=0; i<=d; ++i) {
+-    var vv = cell.vertices[i]
+-    if(vv < 0) {
+-      tuple[i] = point
+-    } else {
+-      tuple[i] = verts[vv]
++  //Create accessor
++  Object.defineProperty(obj, name, {
++    set: function(x) {
++      gl.disableVertexAttribArray(locations[index])
++      constFunc(gl, locations[index], x)
++      return x
+     }
+-  }
+-  var o = this.orient(tuple)
+-  if(o < 0) {
+-    return
+-  } else if(o === 0) {
+-    cell = this.handleBoundaryDegeneracy(cell, point)
+-    if(!cell) {
+-      return
++    , get: function() {
++      return attr
+     }
+-  }
+-
+-  //Add peaks
+-  this.addPeaks(point, cell)
++    , enumerable: true
++  })
+ }
+ 
+-//Extract all boundary cells
+-proto.boundary = function() {
+-  var d = this.dimension
+-  var boundary = []
+-  var cells = this.simplices
+-  var nc = cells.length
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    if(c.boundary) {
+-      var bcell = new Array(d)
+-      var cv = c.vertices
+-      var ptr = 0
+-      var parity = 0
+-      for(var j=0; j<=d; ++j) {
+-        if(cv[j] >= 0) {
+-          bcell[ptr++] = cv[j]
+-        } else {
+-          parity = j&1
++function addMatrixAttribute(
++    gl
++  , wrapper
++  , index
++  , locations
++  , dimension
++  , obj
++  , name) {
++
++  var parts = new Array(dimension)
++  var attrs = new Array(dimension)
++  for(var i=0; i<dimension; ++i) {
++    addVectorAttribute(
++        gl
++      , wrapper
++      , index[i]
++      , locations
++      , dimension
++      , parts
++      , i)
++    attrs[i] = parts[i]
++  }
++
++  Object.defineProperty(parts, 'location', {
++    set: function(v) {
++      if(Array.isArray(v)) {
++        for(var i=0; i<dimension; ++i) {
++          attrs[i].location = v[i]
++        }
++      } else {
++        for(var i=0; i<dimension; ++i) {
++          attrs[i].location = v + i
+         }
+       }
+-      if(parity === (d&1)) {
+-        var t = bcell[0]
+-        bcell[0] = bcell[1]
+-        bcell[1] = t
++      return v
++    }
++    , get: function() {
++      var result = new Array(dimension)
++      for(var i=0; i<dimension; ++i) {
++        result[i] = locations[index[i]]
+       }
+-      boundary.push(bcell)
++      return result
+     }
+-  }
+-  return boundary
+-}
+-
+-function incrementalConvexHull(points, randomSearch) {
+-  var n = points.length
+-  if(n === 0) {
+-    throw new Error("Must have at least d+1 points")
+-  }
+-  var d = points[0].length
+-  if(n <= d) {
+-    throw new Error("Must input at least d+1 points")
+-  }
+-
+-  //FIXME: This could be degenerate, but need to select d+1 non-coplanar points to bootstrap process
+-  var initialSimplex = points.slice(0, d+1)
+-
+-  //Make sure initial simplex is positively oriented
+-  var o = orient.apply(void 0, initialSimplex)
+-  if(o === 0) {
+-    throw new Error("Input not in general position")
+-  }
+-  var initialCoords = new Array(d+1)
+-  for(var i=0; i<=d; ++i) {
+-    initialCoords[i] = i
+-  }
+-  if(o < 0) {
+-    initialCoords[0] = 1
+-    initialCoords[1] = 0
+-  }
++    , enumerable: true
++  })
+ 
+-  //Create initial topological index, glue pointers together (kind of messy)
+-  var initialCell = new Simplex(initialCoords, new Array(d+1), false)
+-  var boundary = initialCell.adjacent
+-  var list = new Array(d+2)
+-  for(var i=0; i<=d; ++i) {
+-    var verts = initialCoords.slice()
+-    for(var j=0; j<=d; ++j) {
+-      if(j === i) {
+-        verts[j] = -1
+-      }
++  parts.pointer = function(type, normalized, stride, offset) {
++    type       = type || gl.FLOAT
++    normalized = !!normalized
++    stride     = stride || (dimension * dimension)
++    offset     = offset || 0
++    for(var i=0; i<dimension; ++i) {
++      var location = locations[index[i]]
++      gl.vertexAttribPointer(
++            location
++          , dimension
++          , type
++          , normalized
++          , stride
++          , offset + i * dimension)
++      gl.enableVertexAttribArray(location)
+     }
+-    var t = verts[0]
+-    verts[0] = verts[1]
+-    verts[1] = t
+-    var cell = new Simplex(verts, new Array(d+1), true)
+-    boundary[i] = cell
+-    list[i] = cell
+   }
+-  list[d+1] = initialCell
+-  for(var i=0; i<=d; ++i) {
+-    var verts = boundary[i].vertices
+-    var adj = boundary[i].adjacent
+-    for(var j=0; j<=d; ++j) {
+-      var v = verts[j]
+-      if(v < 0) {
+-        adj[j] = initialCell
+-        continue
+-      }
+-      for(var k=0; k<=d; ++k) {
+-        if(boundary[k].vertices.indexOf(v) < 0) {
+-          adj[j] = boundary[k]
++
++  var scratch = new Array(dimension)
++  var vertexAttrib = gl['vertexAttrib' + dimension + 'fv']
++
++  Object.defineProperty(obj, name, {
++    set: function(x) {
++      for(var i=0; i<dimension; ++i) {
++        var loc = locations[index[i]]
++        gl.disableVertexAttribArray(loc)
++        if(Array.isArray(x[0])) {
++          vertexAttrib.call(gl, loc, x[i])
++        } else {
++          for(var j=0; j<dimension; ++j) {
++            scratch[j] = x[dimension*i + j]
++          }
++          vertexAttrib.call(gl, loc, scratch)
+         }
+       }
++      return x
+     }
+-  }
++    , get: function() {
++      return parts
++    }
++    , enumerable: true
++  })
++}
+ 
+-  //Initialize triangles
+-  var triangles = new Triangulation(d, initialSimplex, list)
++//Create shims for attributes
++function createAttributeWrapper(
++    gl
++  , wrapper
++  , attributes
++  , locations) {
+ 
+-  //Insert remaining points
+-  var useRandom = !!randomSearch
+-  for(var i=d+1; i<n; ++i) {
+-    triangles.insert(points[i], useRandom)
++  var obj = {}
++  for(var i=0, n=attributes.length; i<n; ++i) {
++
++    var a = attributes[i]
++    var name = a.name
++    var type = a.type
++    var locs = a.locations
++
++    switch(type) {
++      case 'bool':
++      case 'int':
++      case 'float':
++        addVectorAttribute(
++            gl
++          , wrapper
++          , locs[0]
++          , locations
++          , 1
++          , obj
++          , name)
++      break
++
++      default:
++        if(type.indexOf('vec') >= 0) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
++          }
++          addVectorAttribute(
++              gl
++            , wrapper
++            , locs[0]
++            , locations
++            , d
++            , obj
++            , name)
++        } else if(type.indexOf('mat') >= 0) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
++          }
++          addMatrixAttribute(
++              gl
++            , wrapper
++            , locs
++            , locations
++            , d
++            , obj
++            , name)
++        } else {
++          throw new GLError('', 'Unknown data type for attribute ' + name + ': ' + type)
++        }
++      break
++    }
+   }
+-  
+-  //Extract boundary cells
+-  return triangles.boundary()
++  return obj
+ }
+-},{"robust-orientation":439,"simplicial-complex":244}],242:[function(require,module,exports){
+-arguments[4][51][0].apply(exports,arguments)
+-},{"dup":51}],243:[function(require,module,exports){
+-arguments[4][103][0].apply(exports,arguments)
+-},{"dup":103}],244:[function(require,module,exports){
+-"use strict"; "use restrict";
+ 
+-var bits      = require("bit-twiddle")
+-  , UnionFind = require("union-find")
++},{"./GLError":191}],193:[function(require,module,exports){
++'use strict'
+ 
+-//Returns the dimension of a cell complex
+-function dimension(cells) {
+-  var d = 0
+-    , max = Math.max
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    d = max(d, cells[i].length)
+-  }
+-  return d-1
++var coallesceUniforms = require('./reflect')
++var GLError = require("./GLError")
++
++module.exports = createUniformWrapper
++
++//Binds a function and returns a value
++function identity(x) {
++  var c = new Function('y', 'return function(){return y}')
++  return c(x)
+ }
+-exports.dimension = dimension
+ 
+-//Counts the number of vertices in faces
+-function countVertices(cells) {
+-  var vc = -1
+-    , max = Math.max
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-    for(var j=0, jl=c.length; j<jl; ++j) {
+-      vc = max(vc, c[j])
+-    }
++function makeVector(length, fill) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = fill
+   }
+-  return vc+1
++  return result
+ }
+-exports.countVertices = countVertices
+ 
+-//Returns a deep copy of cells
+-function cloneCells(cells) {
+-  var ncells = new Array(cells.length)
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    ncells[i] = cells[i].slice(0)
++//Create shims for uniforms
++function createUniformWrapper(gl, wrapper, uniforms, locations) {
++
++  function makeGetter(index) {
++    var proc = new Function(
++        'gl'
++      , 'wrapper'
++      , 'locations'
++      , 'return function(){return gl.getUniform(wrapper.program,locations[' + index + '])}')
++    return proc(gl, wrapper, locations)
+   }
+-  return ncells
+-}
+-exports.cloneCells = cloneCells
+ 
+-//Ranks a pair of cells up to permutation
+-function compareCells(a, b) {
+-  var n = a.length
+-    , t = a.length - b.length
+-    , min = Math.min
+-  if(t) {
+-    return t
++  function makePropSetter(path, index, type) {
++    switch(type) {
++      case 'bool':
++      case 'int':
++      case 'sampler2D':
++      case 'samplerCube':
++        return 'gl.uniform1i(locations[' + index + '],obj' + path + ')'
++      case 'float':
++        return 'gl.uniform1f(locations[' + index + '],obj' + path + ')'
++      default:
++        var vidx = type.indexOf('vec')
++        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type')
++          }
++          switch(type.charAt(0)) {
++            case 'b':
++            case 'i':
++              return 'gl.uniform' + d + 'iv(locations[' + index + '],obj' + path + ')'
++            case 'v':
++              return 'gl.uniform' + d + 'fv(locations[' + index + '],obj' + path + ')'
++            default:
++              throw new GLError('', 'Unrecognized data type for vector ' + name + ': ' + type)
++          }
++        } else if(type.indexOf('mat') === 0 && type.length === 4) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
++          }
++          return 'gl.uniformMatrix' + d + 'fv(locations[' + index + '],false,obj' + path + ')'
++        } else {
++          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
++        }
++      break
++    }
+   }
+-  switch(n) {
+-    case 0:
+-      return 0;
+-    case 1:
+-      return a[0] - b[0];
+-    case 2:
+-      var d = a[0]+a[1]-b[0]-b[1]
+-      if(d) {
+-        return d
+-      }
+-      return min(a[0],a[1]) - min(b[0],b[1])
+-    case 3:
+-      var l1 = a[0]+a[1]
+-        , m1 = b[0]+b[1]
+-      d = l1+a[2] - (m1+b[2])
+-      if(d) {
+-        return d
+-      }
+-      var l0 = min(a[0], a[1])
+-        , m0 = min(b[0], b[1])
+-        , d  = min(l0, a[2]) - min(m0, b[2])
+-      if(d) {
+-        return d
++
++  function enumerateIndices(prefix, type) {
++    if(typeof type !== 'object') {
++      return [ [prefix, type] ]
++    }
++    var indices = []
++    for(var id in type) {
++      var prop = type[id]
++      var tprefix = prefix
++      if(parseInt(id) + '' === id) {
++        tprefix += '[' + id + ']'
++      } else {
++        tprefix += '.' + id
+       }
+-      return min(l0+a[2], l1) - min(m0+b[2], m1)
+-    
+-    //TODO: Maybe optimize n=4 as well?
+-    
+-    default:
+-      var as = a.slice(0)
+-      as.sort()
+-      var bs = b.slice(0)
+-      bs.sort()
+-      for(var i=0; i<n; ++i) {
+-        t = as[i] - bs[i]
+-        if(t) {
+-          return t
+-        }
++      if(typeof prop === 'object') {
++        indices.push.apply(indices, enumerateIndices(tprefix, prop))
++      } else {
++        indices.push([tprefix, prop])
+       }
+-      return 0
++    }
++    return indices
+   }
+-}
+-exports.compareCells = compareCells
+-
+-function compareZipped(a, b) {
+-  return compareCells(a[0], b[0])
+-}
+ 
+-//Puts a cell complex into normal order for the purposes of findCell queries
+-function normalize(cells, attr) {
+-  if(attr) {
+-    var len = cells.length
+-    var zipped = new Array(len)
+-    for(var i=0; i<len; ++i) {
+-      zipped[i] = [cells[i], attr[i]]
+-    }
+-    zipped.sort(compareZipped)
+-    for(var i=0; i<len; ++i) {
+-      cells[i] = zipped[i][0]
+-      attr[i] = zipped[i][1]
++  function makeSetter(type) {
++    var code = [ 'return function updateProperty(obj){' ]
++    var indices = enumerateIndices('', type)
++    for(var i=0; i<indices.length; ++i) {
++      var item = indices[i]
++      var path = item[0]
++      var idx  = item[1]
++      if(locations[idx]) {
++        code.push(makePropSetter(path, idx, uniforms[idx].type))
++      }
+     }
+-    return cells
+-  } else {
+-    cells.sort(compareCells)
+-    return cells
++    code.push('return obj}')
++    var proc = new Function('gl', 'locations', code.join('\n'))
++    return proc(gl, locations)
+   }
+-}
+-exports.normalize = normalize
+ 
+-//Removes all duplicate cells in the complex
+-function unique(cells) {
+-  if(cells.length === 0) {
+-    return []
++  function defaultValue(type) {
++    switch(type) {
++      case 'bool':
++        return false
++      case 'int':
++      case 'sampler2D':
++      case 'samplerCube':
++        return 0
++      case 'float':
++        return 0.0
++      default:
++        var vidx = type.indexOf('vec')
++        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid data type')
++          }
++          if(type.charAt(0) === 'b') {
++            return makeVector(d, false)
++          }
++          return makeVector(d, 0)
++        } else if(type.indexOf('mat') === 0 && type.length === 4) {
++          var d = type.charCodeAt(type.length-1) - 48
++          if(d < 2 || d > 4) {
++            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
++          }
++          return makeVector(d*d, 0)
++        } else {
++          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
++        }
++      break
++    }
+   }
+-  var ptr = 1
+-    , len = cells.length
+-  for(var i=1; i<len; ++i) {
+-    var a = cells[i]
+-    if(compareCells(a, cells[i-1])) {
+-      if(i === ptr) {
+-        ptr++
+-        continue
++
++  function storeProperty(obj, prop, type) {
++    if(typeof type === 'object') {
++      var child = processObject(type)
++      Object.defineProperty(obj, prop, {
++        get: identity(child),
++        set: makeSetter(type),
++        enumerable: true,
++        configurable: false
++      })
++    } else {
++      if(locations[type]) {
++        Object.defineProperty(obj, prop, {
++          get: makeGetter(type),
++          set: makeSetter(type),
++          enumerable: true,
++          configurable: false
++        })
++      } else {
++        obj[prop] = defaultValue(uniforms[type].type)
+       }
+-      cells[ptr++] = a
+     }
+   }
+-  cells.length = ptr
+-  return cells
+-}
+-exports.unique = unique;
+ 
+-//Finds a cell in a normalized cell complex
+-function findCell(cells, c) {
+-  var lo = 0
+-    , hi = cells.length-1
+-    , r  = -1
+-  while (lo <= hi) {
+-    var mid = (lo + hi) >> 1
+-      , s   = compareCells(cells[mid], c)
+-    if(s <= 0) {
+-      if(s === 0) {
+-        r = mid
++  function processObject(obj) {
++    var result
++    if(Array.isArray(obj)) {
++      result = new Array(obj.length)
++      for(var i=0; i<obj.length; ++i) {
++        storeProperty(result, i, obj[i])
++      }
++    } else {
++      result = {}
++      for(var id in obj) {
++        storeProperty(result, id, obj[id])
+       }
+-      lo = mid + 1
+-    } else if(s > 0) {
+-      hi = mid - 1
+     }
++    return result
+   }
+-  return r
+-}
+-exports.findCell = findCell;
+ 
+-//Builds an index for an n-cell.  This is more general than dual, but less efficient
+-function incidence(from_cells, to_cells) {
+-  var index = new Array(from_cells.length)
+-  for(var i=0, il=index.length; i<il; ++i) {
+-    index[i] = []
++  //Return data
++  var coallesced = coallesceUniforms(uniforms, true)
++  return {
++    get: identity(processObject(coallesced)),
++    set: makeSetter(coallesced),
++    enumerable: true,
++    configurable: true
+   }
+-  var b = []
+-  for(var i=0, n=to_cells.length; i<n; ++i) {
+-    var c = to_cells[i]
+-    var cl = c.length
+-    for(var k=1, kn=(1<<cl); k<kn; ++k) {
+-      b.length = bits.popCount(k)
+-      var l = 0
+-      for(var j=0; j<cl; ++j) {
+-        if(k & (1<<j)) {
+-          b[l++] = c[j]
++}
++
++},{"./GLError":191,"./reflect":194}],194:[function(require,module,exports){
++'use strict'
++
++module.exports = makeReflectTypes
++
++//Construct type info for reflection.
++//
++// This iterates over the flattened list of uniform type values and smashes them into a JSON object.
++//
++// The leaves of the resulting object are either indices or type strings representing primitive glslify types
++function makeReflectTypes(uniforms, useIndex) {
++  var obj = {}
++  for(var i=0; i<uniforms.length; ++i) {
++    var n = uniforms[i].name
++    var parts = n.split(".")
++    var o = obj
++    for(var j=0; j<parts.length; ++j) {
++      var x = parts[j].split("[")
++      if(x.length > 1) {
++        if(!(x[0] in o)) {
++          o[x[0]] = []
+         }
+-      }
+-      var idx=findCell(from_cells, b)
+-      if(idx < 0) {
+-        continue
+-      }
+-      while(true) {
+-        index[idx++].push(i)
+-        if(idx >= from_cells.length || compareCells(from_cells[idx], b) !== 0) {
+-          break
++        o = o[x[0]]
++        for(var k=1; k<x.length; ++k) {
++          var y = parseInt(x[k])
++          if(k<x.length-1 || j<parts.length-1) {
++            if(!(y in o)) {
++              if(k < x.length-1) {
++                o[y] = []
++              } else {
++                o[y] = {}
++              }
++            }
++            o = o[y]
++          } else {
++            if(useIndex) {
++              o[y] = i
++            } else {
++              o[y] = uniforms[i].type
++            }
++          }
++        }
++      } else if(j < parts.length-1) {
++        if(!(x[0] in o)) {
++          o[x[0]] = {}
++        }
++        o = o[x[0]]
++      } else {
++        if(useIndex) {
++          o[x[0]] = i
++        } else {
++          o[x[0]] = uniforms[i].type
+         }
+       }
+     }
+   }
+-  return index
++  return obj
++}
++},{}],195:[function(require,module,exports){
++'use strict'
++
++exports.uniforms    = runtimeUniforms
++exports.attributes  = runtimeAttributes
++
++var GL_TO_GLSL_TYPES = {
++  'FLOAT':       'float',
++  'FLOAT_VEC2':  'vec2',
++  'FLOAT_VEC3':  'vec3',
++  'FLOAT_VEC4':  'vec4',
++  'INT':         'int',
++  'INT_VEC2':    'ivec2',
++  'INT_VEC3':    'ivec3',
++  'INT_VEC4':    'ivec4',
++  'BOOL':        'bool',
++  'BOOL_VEC2':   'bvec2',
++  'BOOL_VEC3':   'bvec3',
++  'BOOL_VEC4':   'bvec4',
++  'FLOAT_MAT2':  'mat2',
++  'FLOAT_MAT3':  'mat3',
++  'FLOAT_MAT4':  'mat4',
++  'SAMPLER_2D':  'sampler2D',
++  'SAMPLER_CUBE':'samplerCube'
+ }
+-exports.incidence = incidence
+ 
+-//Computes the dual of the mesh.  This is basically an optimized version of buildIndex for the situation where from_cells is just the list of vertices
+-function dual(cells, vertex_count) {
+-  if(!vertex_count) {
+-    return incidence(unique(skeleton(cells, 0)), cells, 0)
+-  }
+-  var res = new Array(vertex_count)
+-  for(var i=0; i<vertex_count; ++i) {
+-    res[i] = []
+-  }
+-  for(var i=0, len=cells.length; i<len; ++i) {
+-    var c = cells[i]
+-    for(var j=0, cl=c.length; j<cl; ++j) {
+-      res[c[j]].push(i)
++var GL_TABLE = null
++
++function getType(gl, type) {
++  if(!GL_TABLE) {
++    var typeNames = Object.keys(GL_TO_GLSL_TYPES)
++    GL_TABLE = {}
++    for(var i=0; i<typeNames.length; ++i) {
++      var tn = typeNames[i]
++      GL_TABLE[gl[tn]] = GL_TO_GLSL_TYPES[tn]
+     }
+   }
+-  return res
++  return GL_TABLE[type]
+ }
+-exports.dual = dual
+ 
+-//Enumerates all cells in the complex
+-function explode(cells) {
++function runtimeUniforms(gl, program) {
++  var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS)
+   var result = []
+-  for(var i=0, il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-      , cl = c.length|0
+-    for(var j=1, jl=(1<<cl); j<jl; ++j) {
+-      var b = []
+-      for(var k=0; k<cl; ++k) {
+-        if((j >>> k) & 1) {
+-          b.push(c[k])
++  for(var i=0; i<numUniforms; ++i) {
++    var info = gl.getActiveUniform(program, i)
++    if(info) {
++      var type = getType(gl, info.type)
++      if(info.size > 1) {
++        for(var j=0; j<info.size; ++j) {
++          result.push({
++            name: info.name.replace('[0]', '[' + j + ']'),
++            type: type
++          })
+         }
++      } else {
++        result.push({
++          name: info.name,
++          type: type
++        })
+       }
+-      result.push(b)
+     }
+   }
+-  return normalize(result)
++  return result
+ }
+-exports.explode = explode
+ 
+-//Enumerates all of the n-cells of a cell complex
+-function skeleton(cells, n) {
+-  if(n < 0) {
+-    return []
+-  }
++function runtimeAttributes(gl, program) {
++  var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES)
+   var result = []
+-    , k0     = (1<<(n+1))-1
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var k=k0; k<(1<<c.length); k=bits.nextCombination(k)) {
+-      var b = new Array(n+1)
+-        , l = 0
+-      for(var j=0; j<c.length; ++j) {
+-        if(k & (1<<j)) {
+-          b[l++] = c[j]
+-        }
+-      }
+-      result.push(b)
++  for(var i=0; i<numAttributes; ++i) {
++    var info = gl.getActiveAttrib(program, i)
++    if(info) {
++      result.push({
++        name: info.name,
++        type: getType(gl, info.type)
++      })
+     }
+   }
+-  return normalize(result)
++  return result
+ }
+-exports.skeleton = skeleton;
+ 
+-//Computes the boundary of all cells, does not remove duplicates
+-function boundary(cells) {
+-  var res = []
+-  for(var i=0,il=cells.length; i<il; ++i) {
+-    var c = cells[i]
+-    for(var j=0,cl=c.length; j<cl; ++j) {
+-      var b = new Array(c.length-1)
+-      for(var k=0, l=0; k<cl; ++k) {
+-        if(k !== j) {
+-          b[l++] = c[k]
+-        }
++},{}],196:[function(require,module,exports){
++'use strict'
++
++exports.shader   = getShaderReference
++exports.program  = createProgram
++
++var GLError = require("./GLError")
++var formatCompilerError = require('gl-format-compiler-error');
++
++var weakMap = typeof WeakMap === 'undefined' ? require('weakmap-shim') : WeakMap
++var CACHE = new weakMap()
++
++var SHADER_COUNTER = 0
++
++function ShaderReference(id, src, type, shader, programs, count, cache) {
++  this.id       = id
++  this.src      = src
++  this.type     = type
++  this.shader   = shader
++  this.count    = count
++  this.programs = []
++  this.cache    = cache
++}
++
++ShaderReference.prototype.dispose = function() {
++  if(--this.count === 0) {
++    var cache    = this.cache
++    var gl       = cache.gl
++
++    //Remove program references
++    var programs = this.programs
++    for(var i=0, n=programs.length; i<n; ++i) {
++      var p = cache.programs[programs[i]]
++      if(p) {
++        delete cache.programs[i]
++        gl.deleteProgram(p)
+       }
+-      res.push(b)
+     }
++
++    //Remove shader reference
++    gl.deleteShader(this.shader)
++    delete cache.shaders[(this.type === gl.FRAGMENT_SHADER)|0][this.src]
+   }
+-  return normalize(res)
+ }
+-exports.boundary = boundary;
+ 
+-//Computes connected components for a dense cell complex
+-function connectedComponents_dense(cells, vertex_count) {
+-  var labels = new UnionFind(vertex_count)
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      for(var k=j+1; k<c.length; ++k) {
+-        labels.link(c[j], c[k])
+-      }
++function ContextCache(gl) {
++  this.gl       = gl
++  this.shaders  = [{}, {}]
++  this.programs = {}
++}
++
++var proto = ContextCache.prototype
++
++function compileShader(gl, type, src) {
++  var shader = gl.createShader(type)
++  gl.shaderSource(shader, src)
++  gl.compileShader(shader)
++  if(!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
++    var errLog = gl.getShaderInfoLog(shader)
++    try {
++        var fmt = formatCompilerError(errLog, src, type);
++    } catch (e){
++        console.warn('Failed to format compiler error: ' + e);
++        throw new GLError(errLog, 'Error compiling shader:\n' + errLog)
+     }
++    throw new GLError(errLog, fmt.short, fmt.long)
+   }
+-  var components = []
+-    , component_labels = labels.ranks
+-  for(var i=0; i<component_labels.length; ++i) {
+-    component_labels[i] = -1
+-  }
+-  for(var i=0; i<cells.length; ++i) {
+-    var l = labels.find(cells[i][0])
+-    if(component_labels[l] < 0) {
+-      component_labels[l] = components.length
+-      components.push([cells[i].slice(0)])
+-    } else {
+-      components[component_labels[l]].push(cells[i].slice(0))
+-    }
++  return shader
++}
++
++proto.getShaderReference = function(type, src) {
++  var gl      = this.gl
++  var shaders = this.shaders[(type === gl.FRAGMENT_SHADER)|0]
++  var shader  = shaders[src]
++  if(!shader || !gl.isShader(shader.shader)) {
++    var shaderObj = compileShader(gl, type, src)
++    shader = shaders[src] = new ShaderReference(
++      SHADER_COUNTER++,
++      src,
++      type,
++      shaderObj,
++      [],
++      1,
++      this)
++  } else {
++    shader.count += 1
+   }
+-  return components
++  return shader
+ }
+ 
+-//Computes connected components for a sparse graph
+-function connectedComponents_sparse(cells) {
+-  var vertices  = unique(normalize(skeleton(cells, 0)))
+-    , labels    = new UnionFind(vertices.length)
+-  for(var i=0; i<cells.length; ++i) {
+-    var c = cells[i]
+-    for(var j=0; j<c.length; ++j) {
+-      var vj = findCell(vertices, [c[j]])
+-      for(var k=j+1; k<c.length; ++k) {
+-        labels.link(vj, findCell(vertices, [c[k]]))
+-      }
+-    }
++function linkProgram(gl, vshader, fshader, attribs, locations) {
++  var program = gl.createProgram()
++  gl.attachShader(program, vshader)
++  gl.attachShader(program, fshader)
++  for(var i=0; i<attribs.length; ++i) {
++    gl.bindAttribLocation(program, locations[i], attribs[i])
+   }
+-  var components        = []
+-    , component_labels  = labels.ranks
+-  for(var i=0; i<component_labels.length; ++i) {
+-    component_labels[i] = -1
++  gl.linkProgram(program)
++  if(!gl.getProgramParameter(program, gl.LINK_STATUS)) {
++    var errLog = gl.getProgramInfoLog(program)
++    throw new GLError(errLog, 'Error linking program: ' + errLog)
+   }
+-  for(var i=0; i<cells.length; ++i) {
+-    var l = labels.find(findCell(vertices, [cells[i][0]]));
+-    if(component_labels[l] < 0) {
+-      component_labels[l] = components.length
+-      components.push([cells[i].slice(0)])
+-    } else {
+-      components[component_labels[l]].push(cells[i].slice(0))
+-    }
++  return program
++}
++
++proto.getProgram = function(vref, fref, attribs, locations) {
++  var token = [vref.id, fref.id, attribs.join(':'), locations.join(':')].join('@')
++  var prog  = this.programs[token]
++  if(!prog || !this.gl.isProgram(prog)) {
++    this.programs[token] = prog = linkProgram(
++      this.gl,
++      vref.shader,
++      fref.shader,
++      attribs,
++      locations)
++    vref.programs.push(token)
++    fref.programs.push(token)
+   }
+-  return components
++  return prog
+ }
+ 
+-//Computes connected components for a cell complex
+-function connectedComponents(cells, vertex_count) {
+-  if(vertex_count) {
+-    return connectedComponents_dense(cells, vertex_count)
++function getCache(gl) {
++  var ctxCache = CACHE.get(gl)
++  if(!ctxCache) {
++    ctxCache = new ContextCache(gl)
++    CACHE.set(gl, ctxCache)
+   }
+-  return connectedComponents_sparse(cells)
++  return ctxCache
+ }
+-exports.connectedComponents = connectedComponents
+ 
+-},{"bit-twiddle":242,"union-find":243}],245:[function(require,module,exports){
+-"use strict"
++function getShaderReference(gl, type, src) {
++  return getCache(gl).getShaderReference(type, src)
++}
+ 
+-function iota(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = i
+-  }
+-  return result
++function createProgram(gl, vref, fref, attribs, locations) {
++  return getCache(gl).getProgram(vref, fref, attribs, locations)
+ }
+ 
+-module.exports = iota
+-},{}],246:[function(require,module,exports){
+-/**
+- * Determine if an object is Buffer
+- *
+- * Author:   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+- * License:  MIT
+- *
+- * `npm install is-buffer`
+- */
++},{"./GLError":191,"gl-format-compiler-error":129,"weakmap-shim":468}],197:[function(require,module,exports){
++'use strict'
+ 
+-module.exports = function (obj) {
+-  return !!(obj != null &&
+-    (obj._isBuffer || // For Safari 5-7 (missing Object.prototype.constructor)
+-      (obj.constructor &&
+-      typeof obj.constructor.isBuffer === 'function' &&
+-      obj.constructor.isBuffer(obj))
+-    ))
++module.exports = createSpikes2D
++
++function GLSpikes2D(plot) {
++  this.plot = plot
++  this.enable = [true, true, false, false]
++  this.width  = [1, 1, 1, 1]
++  this.color  = [[0,0,0,1],
++                 [0,0,0,1],
++                 [0,0,0,1],
++                 [0,0,0,1]]
++  this.center = [Infinity, Infinity]
+ }
+ 
+-},{}],247:[function(require,module,exports){
+-'use strict';
++var proto = GLSpikes2D.prototype
+ 
+-var featureFilter = require('feature-filter');
+-var Buffer = require('./buffer');
+-var util = require('../util/util');
+-var StructArrayType = require('../util/struct_array');
+-var VertexArrayObject = require('../render/vertex_array_object');
++proto.update = function(options) {
++  options = options || {}
++  this.enable = (options.enable || [true,true,false,false]).slice()
++  this.width  = (options.width || [1,1,1,1]).slice()
++  this.color  = (options.color || [
++                  [0,0,0,1],
++                  [0,0,0,1],
++                  [0,0,0,1],
++                  [0,0,0,1]]).map(function(x) { return x.slice() })
++  this.center = (options.center || [Infinity,Infinity]).slice()
++  this.plot.setOverlayDirty()
++}
+ 
+-module.exports = Bucket;
++proto.draw = function() {
++  var spikeEnable = this.enable
++  var spikeWidth  = this.width
++  var spikeColor  = this.color
++  var spikeCenter = this.center
++  var plot        = this.plot
++  var line        = plot.line
+ 
+-/**
+- * Instantiate the appropriate subclass of `Bucket` for `options`.
+- * @private
+- * @param options See `Bucket` constructor options
+- * @returns {Bucket}
+- */
+-Bucket.create = function(options) {
+-    var Classes = {
+-        fill: require('./bucket/fill_bucket'),
+-        line: require('./bucket/line_bucket'),
+-        circle: require('./bucket/circle_bucket'),
+-        symbol: require('./bucket/symbol_bucket')
+-    };
+-    return new Classes[options.layer.type](options);
+-};
++  var dataBox     = plot.dataBox
++  var viewPixels  = plot.viewBox
+ 
++  line.bind()
+ 
+-/**
+- * The maximum extent of a feature that can be safely stored in the buffer.
+- * In practice, all features are converted to this extent before being added.
+- *
+- * Positions are stored as signed 16bit integers.
+- * One bit is lost for signedness to support featuers extending past the left edge of the tile.
+- * One bit is lost because the line vertex buffer packs 1 bit of other data into the int.
+- * One bit is lost to support features extending past the extent on the right edge of the tile.
+- * This leaves us with 2^13 = 8192
+- *
+- * @private
+- * @readonly
+- */
+-Bucket.EXTENT = 8192;
++  if(dataBox[0] <= spikeCenter[0] && spikeCenter[0] <= dataBox[2] &&
++     dataBox[1] <= spikeCenter[1] && spikeCenter[1] <= dataBox[3]) {
+ 
+-/**
+- * The `Bucket` class is the single point of knowledge about turning vector
+- * tiles into WebGL buffers.
+- *
+- * `Bucket` is an abstract class. A subclass exists for each Mapbox GL
+- * style spec layer type. Because `Bucket` is an abstract class,
+- * instances should be created via the `Bucket.create` method.
+- *
+- * @class Bucket
+- * @private
+- * @param options
+- * @param {number} options.zoom Zoom level of the buffers being built. May be
+- *     a fractional zoom level.
+- * @param options.layer A Mapbox GL style layer object
+- * @param {Object.<string, Buffer>} options.buffers The set of `Buffer`s being
+- *     built for this tile. This object facilitates sharing of `Buffer`s be
+-       between `Bucket`s.
+- */
+-function Bucket(options) {
+-    this.zoom = options.zoom;
+-    this.overscaling = options.overscaling;
+-    this.layer = options.layer;
+-    this.childLayers = options.childLayers;
++    var centerX = viewPixels[0] + (spikeCenter[0] - dataBox[0]) / (dataBox[2] - dataBox[0]) * (viewPixels[2] - viewPixels[0])
++    var centerY = viewPixels[1] + (spikeCenter[1] - dataBox[1]) / (dataBox[3] - dataBox[1]) * (viewPixels[3] - viewPixels[1])
+ 
+-    this.type = this.layer.type;
+-    this.features = [];
+-    this.id = this.layer.id;
+-    this.index = options.index;
+-    this.sourceLayer = this.layer.sourceLayer;
+-    this.sourceLayerIndex = options.sourceLayerIndex;
+-    this.minZoom = this.layer.minzoom;
+-    this.maxZoom = this.layer.maxzoom;
++    if(spikeEnable[0]) {
++     line.drawLine(
++       centerX, centerY,
++       viewPixels[0], centerY,
++       spikeWidth[0], spikeColor[0])
++    }
++    if(spikeEnable[1]) {
++     line.drawLine(
++       centerX, centerY,
++       centerX, viewPixels[1],
++       spikeWidth[1], spikeColor[1])
++    }
++    if(spikeEnable[2]) {
++      line.drawLine(
++        centerX, centerY,
++        viewPixels[2], centerY,
++        spikeWidth[2], spikeColor[2])
++    }
++    if(spikeEnable[3]) {
++      line.drawLine(
++        centerX, centerY,
++        centerX, viewPixels[3],
++        spikeWidth[3], spikeColor[3])
++    }
++  }
++}
+ 
+-    this.paintAttributes = createPaintAttributes(this);
++proto.dispose = function() {
++  this.plot.removeOverlay(this)
++}
+ 
+-    if (options.arrays) {
+-        var childLayers = this.childLayers;
+-        this.bufferGroups = util.mapObject(options.arrays, function(programArrayGroups, programName) {
+-            return programArrayGroups.map(function(programArrayGroup) {
++function createSpikes2D(plot, options) {
++  var spikes = new GLSpikes2D(plot)
++  spikes.update(options)
++  plot.addOverlay(spikes)
++  return spikes
++}
+ 
+-                var group = util.mapObject(programArrayGroup, function(arrays, layoutOrPaint) {
+-                    return util.mapObject(arrays, function(array, name) {
+-                        var arrayType = options.arrayTypes[programName][layoutOrPaint][name];
+-                        var type = (arrayType.members.length && arrayType.members[0].name === 'vertices' ? Buffer.BufferType.ELEMENT : Buffer.BufferType.VERTEX);
+-                        return new Buffer(array, arrayType, type);
+-                    });
+-                });
++},{}],198:[function(require,module,exports){
++'use strict'
+ 
+-                group.vaos = {};
+-                if (group.layout.element2) group.secondVaos = {};
+-                for (var l = 0; l < childLayers.length; l++) {
+-                    var layerName = childLayers[l].id;
+-                    group.vaos[layerName] = new VertexArrayObject();
+-                    if (group.layout.element2) group.secondVaos[layerName] = new VertexArrayObject();
+-                }
+ 
+-                return group;
+-            });
+-        });
+-    }
++var createShader = require('gl-shader')
++
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, color;\nattribute float weight;\n\nuniform mat4 model, view, projection;\nuniform vec3 coordinates[3];\nuniform vec4 colors[3];\nuniform vec2 screenShape;\nuniform float lineWidth;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vertexPosition = mix(coordinates[0],\n    mix(coordinates[2], coordinates[1], 0.5 * (position + 1.0)), abs(position));\n\n  vec4 clipPos = projection * view * model * vec4(vertexPosition, 1.0);\n  vec2 clipOffset = (projection * view * model * vec4(color, 0.0)).xy;\n  vec2 delta = weight * clipOffset * screenShape;\n  vec2 lineOffset = normalize(vec2(delta.y, -delta.x)) / screenShape;\n\n  gl_Position   = vec4(clipPos.xy + clipPos.w * 0.5 * lineWidth * lineOffset, clipPos.z, clipPos.w);\n  fragColor     = color.x * colors[0] + color.y * colors[1] + color.z * colors[2];\n}\n"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragColor;\n\nvoid main() {\n  gl_FragColor = fragColor;\n}"
++
++module.exports = function(gl) {
++  return createShader(gl, vertSrc, fragSrc, null, [
++    {name: 'position', type: 'vec3'},
++    {name: 'color', type: 'vec3'},
++    {name: 'weight', type: 'float'}
++  ])
+ }
+ 
+-/**
+- * Build the buffers! Features are set directly to the `features` property.
+- * @private
+- */
+-Bucket.prototype.populateBuffers = function() {
+-    this.createArrays();
+-    this.recalculateStyleLayers();
++},{"gl-shader":190}],199:[function(require,module,exports){
++'use strict'
+ 
+-    for (var i = 0; i < this.features.length; i++) {
+-        this.addFeature(this.features[i]);
+-    }
++var createBuffer = require('gl-buffer')
++var createVAO = require('gl-vao')
++var createShader = require('./shaders/index')
+ 
+-    this.trimArrays();
+-};
++module.exports = createSpikes
++
++var identity = [1,0,0,0,
++                0,1,0,0,
++                0,0,1,0,
++                0,0,0,1]
++
++function AxisSpikes(gl, buffer, vao, shader) {
++  this.gl         = gl
++  this.buffer     = buffer
++  this.vao        = vao
++  this.shader     = shader
++  this.pixelRatio = 1
++  this.bounds     = [[-1000,-1000,-1000], [1000,1000,1000]]
++  this.position   = [0,0,0]
++  this.lineWidth  = [2,2,2]
++  this.colors     = [[0,0,0,1], [0,0,0,1], [0,0,0,1]]
++  this.enabled    = [true,true,true]
++  this.drawSides  = [true,true,true]
++  this.axes       = null
++}
++
++var proto = AxisSpikes.prototype
++
++var OUTER_FACE = [0,0,0]
++var INNER_FACE = [0,0,0]
++
++var SHAPE = [0,0]
+ 
+-/**
+- * Check if there is enough space available in the current element group for
+- * `vertexLength` vertices. If not, append a new elementGroup. Should be called
+- * by `populateBuffers` and its callees.
+- * @private
+- * @param {string} programName the name of the program associated with the buffer that will receive the vertices
+- * @param {number} vertexLength The number of vertices that will be inserted to the buffer.
+- */
+-Bucket.prototype.makeRoomFor = function(programName, numVertices) {
+-    var groups = this.arrayGroups[programName];
+-    var currentGroup = groups.length && groups[groups.length - 1];
++proto.isTransparent = function() {
++  return false
++}
+ 
+-    if (!currentGroup || currentGroup.layout.vertex.length + numVertices > 65535) {
++proto.drawTransparent = function(camera) {}
+ 
+-        var arrayTypes = this.arrayTypes[programName];
+-        var VertexArrayType = arrayTypes.layout.vertex;
+-        var ElementArrayType = arrayTypes.layout.element;
+-        var ElementArrayType2 = arrayTypes.layout.element2;
++proto.draw = function(camera) {
++  var gl = this.gl
++  var vao = this.vao
++  var shader = this.shader
+ 
+-        currentGroup = {
+-            index: groups.length,
+-            layout: {},
+-            paint: {}
+-        };
++  vao.bind()
++  shader.bind()
+ 
+-        currentGroup.layout.vertex = new VertexArrayType();
+-        if (ElementArrayType) currentGroup.layout.element = new ElementArrayType();
+-        if (ElementArrayType2) currentGroup.layout.element2 = new ElementArrayType2();
++  var model      = camera.model || identity
++  var view       = camera.view || identity
++  var projection = camera.projection || identity
+ 
+-        for (var i = 0; i < this.childLayers.length; i++) {
+-            var layerName = this.childLayers[i].id;
+-            var PaintVertexArrayType = arrayTypes.paint[layerName];
+-            currentGroup.paint[layerName] = new PaintVertexArrayType();
+-        }
++  var axis
++  if(this.axes) {
++    axis = this.axes.lastCubeProps.axis
++  }
+ 
+-        groups.push(currentGroup);
++  var outerFace = OUTER_FACE
++  var innerFace = INNER_FACE
++  for(var i=0; i<3; ++i) {
++    if(axis && axis[i] < 0) {
++      outerFace[i] = this.bounds[0][i]
++      innerFace[i] = this.bounds[1][i]
++    } else {
++      outerFace[i] = this.bounds[1][i]
++      innerFace[i] = this.bounds[0][i]
+     }
++  }
+ 
+-    return currentGroup;
+-};
++  SHAPE[0] = gl.drawingBufferWidth
++  SHAPE[1] = gl.drawingBufferHeight
+ 
+-/**
+- * Start using a new shared `buffers` object and recreate instances of `Buffer`
+- * as necessary.
+- * @private
+- */
+-Bucket.prototype.createArrays = function() {
+-    this.arrayGroups = {};
+-    this.arrayTypes = {};
++  shader.uniforms.model       = model
++  shader.uniforms.view        = view
++  shader.uniforms.projection  = projection
++  shader.uniforms.coordinates = [this.position, outerFace, innerFace]
++  shader.uniforms.colors      = this.colors
++  shader.uniforms.screenShape = SHAPE
+ 
+-    for (var programName in this.programInterfaces) {
+-        var programInterface = this.programInterfaces[programName];
+-        var programArrayTypes = this.arrayTypes[programName] = { layout: {}, paint: {} };
+-        this.arrayGroups[programName] = [];
++  for(var i=0; i<3; ++i) {
++    shader.uniforms.lineWidth = this.lineWidth[i] * this.pixelRatio
++    if(this.enabled[i]) {
++      vao.draw(gl.TRIANGLES, 6, 6*i)
++      if(this.drawSides[i]) {
++        vao.draw(gl.TRIANGLES, 12, 18+12*i)
++      }
++    }
++  }
+ 
+-        if (programInterface.vertexBuffer) {
+-            var VertexArrayType = new StructArrayType({
+-                members: this.programInterfaces[programName].layoutAttributes,
+-                alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
+-            });
++  vao.unbind()
++}
+ 
+-            programArrayTypes.layout.vertex = VertexArrayType;
++proto.update = function(options) {
++  if(!options) {
++    return
++  }
++  if("bounds" in options) {
++    this.bounds = options.bounds
++  }
++  if("position" in options) {
++    this.position = options.position
++  }
++  if("lineWidth" in options) {
++    this.lineWidth = options.lineWidth
++  }
++  if("colors" in options) {
++    this.colors = options.colors
++  }
++  if("enabled" in options) {
++    this.enabled = options.enabled
++  }
++  if("drawSides" in options) {
++    this.drawSides = options.drawSides
++  }
++}
+ 
+-            var layerPaintAttributes = this.paintAttributes[programName];
+-            for (var layerName in layerPaintAttributes) {
+-                var PaintVertexArrayType = new StructArrayType({
+-                    members: layerPaintAttributes[layerName].attributes,
+-                    alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
+-                });
++proto.dispose = function() {
++  this.vao.dispose()
++  this.buffer.dispose()
++  this.shader.dispose()
++}
+ 
+-                programArrayTypes.paint[layerName] = PaintVertexArrayType;
+-            }
+-        }
+ 
+-        if (programInterface.elementBuffer) {
+-            var ElementArrayType = createElementBufferType(programInterface.elementBufferComponents);
+-            programArrayTypes.layout.element = ElementArrayType;
+-        }
+ 
+-        if (programInterface.elementBuffer2) {
+-            var ElementArrayType2 = createElementBufferType(programInterface.elementBuffer2Components);
+-            programArrayTypes.layout.element2 = ElementArrayType2;
+-        }
+-    }
+-};
++function createSpikes(gl, options) {
++  //Create buffers
++  var data = [ ]
+ 
+-Bucket.prototype.destroy = function(gl) {
+-    for (var programName in this.bufferGroups) {
+-        var programBufferGroups = this.bufferGroups[programName];
+-        for (var i = 0; i < programBufferGroups.length; i++) {
+-            var programBuffers = programBufferGroups[i];
+-            for (var paintBuffer in programBuffers.paint) {
+-                programBuffers.paint[paintBuffer].destroy(gl);
+-            }
+-            for (var layoutBuffer in programBuffers.layout) {
+-                programBuffers.layout[layoutBuffer].destroy(gl);
+-            }
+-            for (var j in programBuffers.vaos) {
+-                programBuffers.vaos[j].destroy(gl);
+-            }
+-            for (var k in programBuffers.secondVaos) {
+-                programBuffers.secondVaos[k].destroy(gl);
+-            }
+-        }
+-    }
++  function line(x,y,z,i,l,h) {
++    var row = [x,y,z,  0,0,0,  1]
++    row[i+3] = 1
++    row[i] = l
++    data.push.apply(data, row)
++    row[6] = -1
++    data.push.apply(data, row)
++    row[i] = h
++    data.push.apply(data, row)
++    data.push.apply(data, row)
++    row[6] = 1
++    data.push.apply(data, row)
++    row[i] = l
++    data.push.apply(data, row)
++  }
+ 
+-};
++  line(0,0,0, 0, 0, 1)
++  line(0,0,0, 1, 0, 1)
++  line(0,0,0, 2, 0, 1)
+ 
+-Bucket.prototype.trimArrays = function() {
+-    for (var programName in this.arrayGroups) {
+-        var programArrays = this.arrayGroups[programName];
+-        for (var paintArray in programArrays.paint) {
+-            programArrays.paint[paintArray].trim();
+-        }
+-        for (var layoutArray in programArrays.layout) {
+-            programArrays.layout[layoutArray].trim();
+-        }
+-    }
+-};
++  line(1,0,0,  1,  -1,1)
++  line(1,0,0,  2,  -1,1)
+ 
+-Bucket.prototype.setUniforms = function(gl, programName, program, layer, globalProperties) {
+-    var uniforms = this.paintAttributes[programName][layer.id].uniforms;
+-    for (var i = 0; i < uniforms.length; i++) {
+-        var uniform = uniforms[i];
+-        var uniformLocation = program[uniform.name];
+-        gl['uniform' + uniform.components + 'fv'](uniformLocation, uniform.getValue(layer, globalProperties));
+-    }
+-};
++  line(0,1,0,  0,  -1,1)
++  line(0,1,0,  2,  -1,1)
+ 
+-Bucket.prototype.serialize = function() {
+-    return {
+-        layerId: this.layer.id,
+-        zoom: this.zoom,
+-        arrays: util.mapObject(this.arrayGroups, function(programArrayGroups) {
+-            return programArrayGroups.map(function(arrayGroup) {
+-                return util.mapObject(arrayGroup, function(arrays) {
+-                    return util.mapObject(arrays, function(array) {
+-                        return array.serialize();
+-                    });
+-                });
+-            });
+-        }),
+-        arrayTypes: util.mapObject(this.arrayTypes, function(programArrayTypes) {
+-            return util.mapObject(programArrayTypes, function(arrayTypes) {
+-                return util.mapObject(arrayTypes, function(arrayType) {
+-                    return arrayType.serialize();
+-                });
+-            });
+-        }),
++  line(0,0,1,  0,  -1,1)
++  line(0,0,1,  1,  -1,1)
+ 
+-        childLayerIds: this.childLayers.map(function(layer) {
+-            return layer.id;
+-        })
+-    };
+-};
++  var buffer = createBuffer(gl, data)
++  var vao = createVAO(gl, [{
++    type: gl.FLOAT,
++    buffer: buffer,
++    size: 3,
++    offset: 0,
++    stride: 28
++  }, {
++    type: gl.FLOAT,
++    buffer: buffer,
++    size: 3,
++    offset: 12,
++    stride: 28
++  }, {
++    type: gl.FLOAT,
++    buffer: buffer,
++    size: 1,
++    offset: 24,
++    stride: 28
++  }])
+ 
+-Bucket.prototype.createFilter = function() {
+-    if (!this.filter) {
+-        this.filter = featureFilter(this.layer.filter);
+-    }
+-};
++  //Create shader
++  var shader = createShader(gl)
++  shader.attributes.position.location = 0
++  shader.attributes.color.location = 1
++  shader.attributes.weight.location = 2
+ 
+-var FAKE_ZOOM_HISTORY = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
+-Bucket.prototype.recalculateStyleLayers = function() {
+-    for (var i = 0; i < this.childLayers.length; i++) {
+-        this.childLayers[i].recalculate(this.zoom, FAKE_ZOOM_HISTORY);
+-    }
+-};
++  //Create spike object
++  var spikes = new AxisSpikes(gl, buffer, vao, shader)
+ 
+-Bucket.prototype.getProgramMacros = function(programInterface, layer) {
+-    var macros = [];
+-    var attributes = this.paintAttributes[programInterface][layer.id].attributes;
+-    for (var i = 0; i < attributes.length; i++) {
+-        var attribute = attributes[i];
+-        macros.push('ATTRIBUTE_' + (attribute.isFunction ? 'ZOOM_FUNCTION_' : '') + attribute.name.toUpperCase());
+-    }
+-    return macros;
+-};
++  //Set parameters
++  spikes.update(options)
+ 
+-Bucket.prototype.addPaintAttributes = function(interfaceName, globalProperties, featureProperties, startGroup, startIndex) {
+-    for (var l = 0; l < this.childLayers.length; l++) {
+-        var layer = this.childLayers[l];
+-        var groups = this.arrayGroups[interfaceName];
+-        for (var g = startGroup.index; g < groups.length; g++) {
+-            var group = groups[g];
+-            var length = group.layout.vertex.length;
+-            var vertexArray = group.paint[layer.id];
+-            vertexArray.resize(length);
++  //Return resulting object
++  return spikes
++}
+ 
+-            var attributes = this.paintAttributes[interfaceName][layer.id].attributes;
+-            for (var m = 0; m < attributes.length; m++) {
+-                var attribute = attributes[m];
++},{"./shaders/index":198,"gl-buffer":121,"gl-vao":206}],200:[function(require,module,exports){
++var createShader = require('gl-shader')
+ 
+-                var value = attribute.getValue(layer, globalProperties, featureProperties);
+-                var multiplier = attribute.multiplier || 1;
+-                var components = attribute.components || 1;
+ 
+-                for (var i = startIndex; i < length; i++) {
+-                    var vertex = vertexArray.get(i);
+-                    for (var c = 0; c < components; c++) {
+-                        var memberName = components > 1 ? (attribute.name + c) : attribute.name;
+-                        vertex[memberName] = value[c] * multiplier;
+-                    }
+-                }
+-            }
+-        }
+-    }
+-};
++var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute vec3 f;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection, inverseModel;\nuniform vec3 lightPosition, eyePosition;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  worldCoordinate = vec3(uv.zw, f.x);\n  vec4 worldPosition = model * vec4(worldCoordinate, 1.0);\n  vec4 clipPosition = projection * view * worldPosition;\n  gl_Position = clipPosition;\n  kill = f.y;\n  value = f.z;\n  planeCoordinate = uv.xy;\n\n  //Lighting geometry parameters\n  vec4 cameraCoordinate = view * worldPosition;\n  cameraCoordinate.xyz /= cameraCoordinate.w;\n  lightDirection = lightPosition - cameraCoordinate.xyz;\n  eyeDirection   = eyePosition - cameraCoordinate.xyz;\n  surfaceNormal  = normalize((vec4(normal,0) * inverseModel).xyz);\n}\n"
++var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat beckmannSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness) {\n  return beckmannDistribution_2_0(dot(surfaceNormal, normalize(lightDirection + viewDirection)), roughness);\n}\n\n\n\nuniform vec3 lowerBound, upperBound;\nuniform float contourTint;\nuniform vec4 contourColor;\nuniform sampler2D colormap;\nuniform vec3 clipBounds[2];\nuniform float roughness, fresnel, kambient, kdiffuse, kspecular, opacity;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(surfaceNormal);\n  vec3 V = normalize(eyeDirection);\n  vec3 L = normalize(lightDirection);\n\n  if(gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = beckmannSpecular_1_1(L, V, N, roughness);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = texture2D(colormap, vec2(value, value));\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = mix(litColor, contourColor, contourTint) * opacity;\n}\n"
++var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute float f;\n\nuniform mat3 permutation;\nuniform mat4 model, view, projection;\nuniform float height, zOffset;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  vec3 dataCoordinate = permutation * vec3(uv.xy, height);\n  vec4 worldPosition = model * vec4(dataCoordinate, 1.0);\n\n  vec4 clipPosition = projection * view * worldPosition;\n  clipPosition.z = clipPosition.z + zOffset;\n\n  gl_Position = clipPosition;\n  value = f;\n  kill = -1.0;\n  worldCoordinate = dataCoordinate;\n  planeCoordinate = uv.zw;\n\n  //Don't do lighting for contours\n  surfaceNormal   = vec3(1,0,0);\n  eyeDirection    = vec3(0,1,0);\n  lightDirection  = vec3(0,0,1);\n}\n"
++var pickSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec2 shape;\nuniform vec3 clipBounds[2];\nuniform float pickId;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 surfaceNormal;\n\nvec2 splitFloat(float v) {\n  float vh = 255.0 * v;\n  float upper = floor(vh);\n  float lower = fract(vh);\n  return vec2(upper / 255.0, floor(lower * 16.0) / 16.0);\n}\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n  vec2 ux = splitFloat(planeCoordinate.x / shape.x);\n  vec2 uy = splitFloat(planeCoordinate.y / shape.y);\n  gl_FragColor = vec4(pickId, ux.x, uy.x, ux.y + (uy.y/16.0));\n}\n"
+ 
+-function createElementBufferType(components) {
+-    return new StructArrayType({
+-        members: [{
+-            type: Buffer.ELEMENT_ATTRIBUTE_TYPE,
+-            name: 'vertices',
+-            components: components || 3
+-        }]
+-    });
++exports.createShader = function (gl) {
++  var shader = createShader(gl, vertSrc, fragSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'vec3'},
++    {name: 'normal', type: 'vec3'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  shader.attributes.normal.location = 2
++  return shader
++}
++exports.createPickShader = function (gl) {
++  var shader = createShader(gl, vertSrc, pickSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'vec3'},
++    {name: 'normal', type: 'vec3'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  shader.attributes.normal.location = 2
++  return shader
++}
++exports.createContourShader = function (gl) {
++  var shader = createShader(gl, contourVertSrc, fragSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'float'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  return shader
++}
++exports.createPickContourShader = function (gl) {
++  var shader = createShader(gl, contourVertSrc, pickSrc, null, [
++    {name: 'uv', type: 'vec4'},
++    {name: 'f', type: 'float'}
++  ])
++  shader.attributes.uv.location = 0
++  shader.attributes.f.location = 1
++  return shader
+ }
+ 
+-function createPaintAttributes(bucket) {
+-    var attributes = {};
+-    for (var interfaceName in bucket.programInterfaces) {
+-        var layerPaintAttributes = attributes[interfaceName] = {};
++},{"gl-shader":190}],201:[function(require,module,exports){
++'use strict'
+ 
+-        for (var c = 0; c < bucket.childLayers.length; c++) {
+-            var childLayer = bucket.childLayers[c];
+-            layerPaintAttributes[childLayer.id] = { attributes: [], uniforms: [] };
+-        }
++module.exports = createSurfacePlot
+ 
+-        var interface_ = bucket.programInterfaces[interfaceName];
+-        if (!interface_.paintAttributes) continue;
+-        for (var i = 0; i < interface_.paintAttributes.length; i++) {
+-            var attribute = interface_.paintAttributes[i];
++var bits = require('bit-twiddle')
++var createBuffer = require('gl-buffer')
++var createVAO = require('gl-vao')
++var createTexture = require('gl-texture2d')
++var pool = require('typedarray-pool')
++var colormap = require('colormap')
++var ops = require('ndarray-ops')
++var pack = require('ndarray-pack')
++var ndarray = require('ndarray')
++var surfaceNets = require('surface-nets')
++var multiply = require('gl-mat4/multiply')
++var invert = require('gl-mat4/invert')
++var bsearch = require('binary-search-bounds')
++var gradient = require('ndarray-gradient')
++var shaders = require('./lib/shaders')
+ 
+-            for (var j = 0; j < bucket.childLayers.length; j++) {
+-                var layer = bucket.childLayers[j];
+-                var paintAttributes = layerPaintAttributes[layer.id];
++var createShader = shaders.createShader
++var createContourShader = shaders.createContourShader
++var createPickShader = shaders.createPickShader
++var createPickContourShader = shaders.createPickContourShader
+ 
+-                if (layer.isPaintValueFeatureConstant(attribute.paintProperty)) {
+-                    paintAttributes.uniforms.push(attribute);
+-                } else if (layer.isPaintValueZoomConstant(attribute.paintProperty)) {
+-                    paintAttributes.attributes.push(attribute);
+-                } else {
++var SURFACE_VERTEX_SIZE = 4 * (4 + 3 + 3)
+ 
+-                    var zoomLevels = layer.getPaintValueStopZoomLevels(attribute.paintProperty);
++var IDENTITY = [
++  1, 0, 0, 0,
++  0, 1, 0, 0,
++  0, 0, 1, 0,
++  0, 0, 0, 1 ]
+ 
+-                    // Pick the index of the first offset to add to the buffers.
+-                    // Find the four closest stops, ideally with two on each side of the zoom level.
+-                    var numStops = 0;
+-                    while (numStops < zoomLevels.length && zoomLevels[numStops] < bucket.zoom) numStops++;
+-                    var stopOffset = Math.max(0, Math.min(zoomLevels.length - 4, numStops - 2));
++var QUAD = [
++  [0, 0],
++  [0, 1],
++  [1, 0],
++  [1, 1],
++  [1, 0],
++  [0, 1]
++]
+ 
+-                    var fourZoomLevels = [];
+-                    for (var s = 0; s < 4; s++) {
+-                        fourZoomLevels.push(zoomLevels[Math.min(stopOffset + s, zoomLevels.length - 1)]);
+-                    }
++var PERMUTATIONS = [
++  [0, 0, 0, 0, 0, 0, 0, 0, 0],
++  [0, 0, 0, 0, 0, 0, 0, 0, 0],
++  [0, 0, 0, 0, 0, 0, 0, 0, 0]
++]
+ 
+-                    var components = attribute.components;
+-                    if (components === 1) {
+-                        paintAttributes.attributes.push(util.extend({}, attribute, {
+-                            getValue: createFunctionGetValue(attribute, fourZoomLevels),
+-                            isFunction: true,
+-                            components: components * 4
+-                        }));
+-                    } else {
+-                        for (var k = 0; k < 4; k++) {
+-                            paintAttributes.attributes.push(util.extend({}, attribute, {
+-                                getValue: createFunctionGetValue(attribute, [fourZoomLevels[k]]),
+-                                isFunction: true,
+-                                name: attribute.name + k
+-                            }));
+-                        }
+-                    }
++;(function () {
++  for (var i = 0; i < 3; ++i) {
++    var p = PERMUTATIONS[i]
++    var u = (i + 1) % 3
++    var v = (i + 2) % 3
++    p[u + 0] = 1
++    p[v + 3] = 1
++    p[i + 6] = 1
++  }
++})()
+ 
+-                    paintAttributes.uniforms.push(util.extend({}, attribute, {
+-                        name: 'u_' + attribute.name.slice(2) + '_t',
+-                        getValue: createGetUniform(attribute, stopOffset),
+-                        components: 1
+-                    }));
+-                }
+-            }
+-        }
+-    }
+-    return attributes;
++function SurfacePickResult (position, index, uv, level, dataCoordinate) {
++  this.position = position
++  this.index = index
++  this.uv = uv
++  this.level = level
++  this.dataCoordinate = dataCoordinate
+ }
+ 
+-function createFunctionGetValue(attribute, stopZoomLevels) {
+-    return function(layer, globalProperties, featureProperties) {
+-        if (stopZoomLevels.length === 1) {
+-            // return one multi-component value like color0
+-            return attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevels[0] }), featureProperties);
+-        } else {
+-            // pack multiple single-component values into a four component attribute
+-            var values = [];
+-            for (var z = 0; z < stopZoomLevels.length; z++) {
+-                var stopZoomLevel = stopZoomLevels[z];
+-                values.push(attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevel }), featureProperties)[0]);
+-            }
+-            return values;
+-        }
+-    };
+-}
++var N_COLORS = 265
+ 
+-function createGetUniform(attribute, stopOffset) {
+-    return function(layer, globalProperties) {
+-        // stopInterp indicates which stops need to be interpolated.
+-        // If stopInterp is 3.5 then interpolate half way between stops 3 and 4.
+-        var stopInterp = layer.getPaintInterpolationT(attribute.paintProperty, globalProperties.zoom);
+-        // We can only store four stop values in the buffers. stopOffset is the number of stops that come
+-        // before the stops that were added to the buffers.
+-        return [Math.max(0, Math.min(4, stopInterp - stopOffset))];
+-    };
++function genColormap (name) {
++  var x = pack([colormap({
++    colormap: name,
++    nshades: N_COLORS,
++    format: 'rgba'
++  }).map(function (c) {
++    return [c[0], c[1], c[2], 255 * c[3]]
++  })])
++  ops.divseq(x, 255.0)
++  return x
+ }
+ 
+-},{"../render/vertex_array_object":273,"../util/struct_array":347,"../util/util":349,"./bucket/circle_bucket":248,"./bucket/fill_bucket":249,"./bucket/line_bucket":250,"./bucket/symbol_bucket":251,"./buffer":252,"feature-filter":352}],248:[function(require,module,exports){
+-'use strict';
++function SurfacePlot (
++  gl,
++  shape,
++  bounds,
++  shader,
++  pickShader,
++  coordinates,
++  vao,
++  colorMap,
++  contourShader,
++  contourPickShader,
++  contourBuffer,
++  contourVAO,
++  dynamicBuffer,
++  dynamicVAO) {
++  this.gl = gl
++  this.shape = shape
++  this.bounds = bounds
++  this.intensityBounds = [];
+ 
+-var Bucket = require('../bucket');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
+-var EXTENT = Bucket.EXTENT;
++  this._shader = shader
++  this._pickShader = pickShader
++  this._coordinateBuffer = coordinates
++  this._vao = vao
++  this._colorMap = colorMap
+ 
+-module.exports = CircleBucket;
++  this._contourShader = contourShader
++  this._contourPickShader = contourPickShader
++  this._contourBuffer = contourBuffer
++  this._contourVAO = contourVAO
++  this._contourOffsets = [[], [], []]
++  this._contourCounts = [[], [], []]
++  this._vertexCount = 0
+ 
+-/**
+- * Circles are represented by two triangles.
+- *
+- * Each corner has a pos that is the center of the circle and an extrusion
+- * vector that is where it points.
+- * @private
+- */
+-function CircleBucket() {
+-    Bucket.apply(this, arguments);
+-}
++  this._pickResult = new SurfacePickResult([0, 0, 0], [0, 0], [0, 0], [0, 0, 0], [0, 0, 0])
+ 
+-CircleBucket.prototype = util.inherit(Bucket, {});
++  this._dynamicBuffer = dynamicBuffer
++  this._dynamicVAO = dynamicVAO
++  this._dynamicOffsets = [0, 0, 0]
++  this._dynamicCounts = [0, 0, 0]
+ 
+-CircleBucket.prototype.addCircleVertex = function(vertexArray, x, y, extrudeX, extrudeY) {
+-    return vertexArray.emplaceBack(
+-            (x * 2) + ((extrudeX + 1) / 2),
+-            (y * 2) + ((extrudeY + 1) / 2));
+-};
++  this.contourWidth = [ 1, 1, 1 ]
++  this.contourLevels = [[1], [1], [1]]
++  this.contourTint = [0, 0, 0]
++  this.contourColor = [[0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1]]
+ 
+-CircleBucket.prototype.programInterfaces = {
+-    circle: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
++  this.showContour = true
++  this.showSurface = true
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }],
+-        paintAttributes: [{
+-            name: 'a_color',
+-            components: 4,
+-            type: 'Uint8',
+-            getValue: function(layer, globalProperties, featureProperties) {
+-                return util.premultiply(layer.getPaintValue("circle-color", globalProperties, featureProperties));
+-            },
+-            multiplier: 255,
+-            paintProperty: 'circle-color'
+-        }, {
+-            name: 'a_radius',
+-            components: 1,
+-            type: 'Uint16',
+-            isLayerConstant: false,
+-            getValue: function(layer, globalProperties, featureProperties) {
+-                return [layer.getPaintValue("circle-radius", globalProperties, featureProperties)];
+-            },
+-            multiplier: 10,
+-            paintProperty: 'circle-radius'
+-        }]
+-    }
+-};
++  this.enableHighlight = [true, true, true]
++  this.highlightColor = [[0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1]]
++  this.highlightTint = [ 1, 1, 1 ]
++  this.highlightLevel = [-1, -1, -1]
+ 
+-CircleBucket.prototype.addFeature = function(feature) {
+-    var globalProperties = {zoom: this.zoom};
+-    var geometries = loadGeometry(feature);
++  // Dynamic contour options
++  this.enableDynamic = [ true, true, true ]
++  this.dynamicLevel = [ NaN, NaN, NaN ]
++  this.dynamicColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ]
++  this.dynamicTint = [ 1, 1, 1 ]
++  this.dynamicWidth = [ 1, 1, 1 ]
+ 
+-    var startGroup = this.makeRoomFor('circle', 0);
+-    var startIndex = startGroup.layout.vertex.length;
++  this.axesBounds = [[Infinity, Infinity, Infinity], [-Infinity, -Infinity, -Infinity]]
++  this.surfaceProject = [ false, false, false ]
++  this.contourProject = [[ false, false, false ],
++    [ false, false, false ],
++    [ false, false, false ]]
+ 
+-    for (var j = 0; j < geometries.length; j++) {
+-        for (var k = 0; k < geometries[j].length; k++) {
++  this.colorBounds = [ false, false ]
+ 
+-            var x = geometries[j][k].x;
+-            var y = geometries[j][k].y;
++  // Store xyz fields, need this for picking
++  this._field = [
++    ndarray(pool.mallocFloat(1024), [0, 0]),
++    ndarray(pool.mallocFloat(1024), [0, 0]),
++    ndarray(pool.mallocFloat(1024), [0, 0]) ]
+ 
+-            // Do not include points that are outside the tile boundaries.
+-            if (x < 0 || x >= EXTENT || y < 0 || y >= EXTENT) continue;
++  this.pickId = 1
++  this.clipBounds = [[-Infinity, -Infinity, -Infinity], [Infinity, Infinity, Infinity]]
+ 
+-            // this geometry will be of the Point type, and we'll derive
+-            // two triangles from it.
+-            //
+-            // ┌─────────┐
+-            // │ 3     2 │
+-            // │         │
+-            // │ 0     1 │
+-            // └─────────┘
++  this.snapToData = false
+ 
+-            var group = this.makeRoomFor('circle', 4);
+-            var vertexArray = group.layout.vertex;
++  this.opacity = 1.0
+ 
+-            var index = this.addCircleVertex(vertexArray, x, y, -1, -1);
+-            this.addCircleVertex(vertexArray, x, y, 1, -1);
+-            this.addCircleVertex(vertexArray, x, y, 1, 1);
+-            this.addCircleVertex(vertexArray, x, y, -1, 1);
++  this.lightPosition = [10, 10000, 0]
++  this.ambientLight = 0.8
++  this.diffuseLight = 0.8
++  this.specularLight = 2.0
++  this.roughness = 0.5
++  this.fresnel = 1.5
+ 
+-            group.layout.element.emplaceBack(index, index + 1, index + 2);
+-            group.layout.element.emplaceBack(index, index + 3, index + 2);
+-        }
+-    }
++  this.dirty = true
++}
+ 
+-    this.addPaintAttributes('circle', globalProperties, feature.properties, startGroup, startIndex);
+-};
++var proto = SurfacePlot.prototype
+ 
+-},{"../../util/util":349,"../bucket":247,"../load_geometry":254}],249:[function(require,module,exports){
+-'use strict';
++proto.isTransparent = function () {
++  return this.opacity < 1
++}
+ 
+-var Bucket = require('../bucket');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
++proto.isOpaque = function () {
++  if (this.opacity >= 1) {
++    return true
++  }
++  for (var i = 0; i < 3; ++i) {
++    if (this._contourCounts[i].length > 0 || this._dynamicCounts[i] > 0) {
++      return true
++    }
++  }
++  return false
++}
+ 
+-module.exports = FillBucket;
++proto.pickSlots = 1
+ 
+-function FillBucket() {
+-    Bucket.apply(this, arguments);
++proto.setPickBase = function (id) {
++  this.pickId = id
+ }
+ 
+-FillBucket.prototype = util.inherit(Bucket, {});
++var ZERO_VEC = [0, 0, 0]
+ 
+-FillBucket.prototype.programInterfaces = {
+-    fill: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
+-        elementBuffer2: true,
+-        elementBuffer2Components: 2,
++var PROJECT_DATA = {
++  showSurface: false,
++  showContour: false,
++  projections: [IDENTITY.slice(), IDENTITY.slice(), IDENTITY.slice()],
++  clipBounds: [
++    [[0, 0, 0], [0, 0, 0]],
++    [[0, 0, 0], [0, 0, 0]],
++    [[0, 0, 0], [0, 0, 0]]]
++}
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }]
++function computeProjectionData (camera, obj) {
++  var i, j, k
++
++  // Compute cube properties
++  var cubeAxis = (obj.axes && obj.axes.lastCubeProps.axis) || ZERO_VEC
++
++  var showSurface = obj.showSurface
++  var showContour = obj.showContour
++
++  for (i = 0; i < 3; ++i) {
++    showSurface = showSurface || obj.surfaceProject[i]
++    for (j = 0; j < 3; ++j) {
++      showContour = showContour || obj.contourProject[i][j]
+     }
+-};
++  }
+ 
+-FillBucket.prototype.addFeature = function(feature) {
+-    var lines = loadGeometry(feature);
+-    for (var i = 0; i < lines.length; i++) {
+-        this.addFill(lines[i]);
++  for (i = 0; i < 3; ++i) {
++    // Construct projection onto axis
++    var axisSquish = PROJECT_DATA.projections[i]
++    for (j = 0; j < 16; ++j) {
++      axisSquish[j] = 0
+     }
+-};
++    for (j = 0; j < 4; ++j) {
++      axisSquish[5 * j] = 1
++    }
++    axisSquish[5 * i] = 0
++    axisSquish[12 + i] = obj.axesBounds[+(cubeAxis[i] > 0)][i]
++    multiply(axisSquish, camera.model, axisSquish)
+ 
+-FillBucket.prototype.addFill = function(vertices) {
+-    if (vertices.length < 3) {
+-        //console.warn('a fill must have at least three vertices');
+-        return;
++    var nclipBounds = PROJECT_DATA.clipBounds[i]
++    for (k = 0; k < 2; ++k) {
++      for (j = 0; j < 3; ++j) {
++        nclipBounds[k][j] = camera.clipBounds[k][j]
++      }
+     }
++    nclipBounds[0][i] = -1e8
++    nclipBounds[1][i] = 1e8
++  }
+ 
+-    // Calculate the total number of vertices we're going to produce so that we
+-    // can resize the buffer beforehand, or detect whether the current line
+-    // won't fit into the buffer anymore.
+-    // In order to be able to use the vertex buffer for drawing the antialiased
+-    // outlines, we separate all polygon vertices with a degenerate (out-of-
+-    // viewplane) vertex.
++  PROJECT_DATA.showSurface = showSurface
++  PROJECT_DATA.showContour = showContour
+ 
+-    var len = vertices.length;
++  return PROJECT_DATA
++}
+ 
+-    // Expand this geometry buffer to hold all the required vertices.
+-    var group = this.makeRoomFor('fill', len + 1);
++var UNIFORMS = {
++  model: IDENTITY,
++  view: IDENTITY,
++  projection: IDENTITY,
++  inverseModel: IDENTITY.slice(),
++  lowerBound: [0, 0, 0],
++  upperBound: [0, 0, 0],
++  colorMap: 0,
++  clipBounds: [[0, 0, 0], [0, 0, 0]],
++  height: 0.0,
++  contourTint: 0,
++  contourColor: [0, 0, 0, 1],
++  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
++  zOffset: -1e-4,
++  kambient: 1,
++  kdiffuse: 1,
++  kspecular: 1,
++  lightPosition: [1000, 1000, 1000],
++  eyePosition: [0, 0, 0],
++  roughness: 1,
++  fresnel: 1,
++  opacity: 1
++}
+ 
+-    // We're generating triangle fans, so we always start with the first coordinate in this polygon.
+-    var firstIndex, prevIndex;
+-    for (var i = 0; i < vertices.length; i++) {
+-        var currentVertex = vertices[i];
++var MATRIX_INVERSE = IDENTITY.slice()
++var DEFAULT_PERM = [1, 0, 0, 0, 1, 0, 0, 0, 1]
+ 
+-        var currentIndex = group.layout.vertex.emplaceBack(currentVertex.x, currentVertex.y);
+-        if (i === 0) firstIndex = currentIndex;
++function drawCore (params, transparent) {
++  params = params || {}
++  var gl = this.gl
+ 
+-        // Only add triangles that have distinct vertices.
+-        if (i >= 2 && (currentVertex.x !== vertices[0].x || currentVertex.y !== vertices[0].y)) {
+-            group.layout.element.emplaceBack(firstIndex, prevIndex, currentIndex);
+-        }
++  gl.disable(gl.CULL_FACE)
+ 
+-        if (i >= 1) {
+-            group.layout.element2.emplaceBack(prevIndex, currentIndex);
+-        }
++  this._colorMap.bind(0)
+ 
+-        prevIndex = currentIndex;
++  var uniforms = UNIFORMS
++  uniforms.model = params.model || IDENTITY
++  uniforms.view = params.view || IDENTITY
++  uniforms.projection = params.projection || IDENTITY
++  uniforms.lowerBound = [this.bounds[0][0], this.bounds[0][1], this.colorBounds[0] || this.bounds[0][2]]
++  uniforms.upperBound = [this.bounds[1][0], this.bounds[1][1], this.colorBounds[1] || this.bounds[1][2]]
++  uniforms.contourColor = this.contourColor[0]
++
++  uniforms.inverseModel = invert(uniforms.inverseModel, uniforms.model)
++
++  for (var i = 0; i < 2; ++i) {
++    var clipClamped = uniforms.clipBounds[i]
++    for (var j = 0; j < 3; ++j) {
++      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
+     }
+-};
++  }
+ 
+-},{"../../util/util":349,"../bucket":247,"../load_geometry":254}],250:[function(require,module,exports){
+-'use strict';
++  uniforms.kambient = this.ambientLight
++  uniforms.kdiffuse = this.diffuseLight
++  uniforms.kspecular = this.specularLight
+ 
+-var Bucket = require('../bucket');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
+-var EXTENT = Bucket.EXTENT;
++  uniforms.roughness = this.roughness
++  uniforms.fresnel = this.fresnel
++  uniforms.opacity = this.opacity
+ 
+-// NOTE ON EXTRUDE SCALE:
+-// scale the extrusion vector so that the normal length is this value.
+-// contains the "texture" normals (-1..1). this is distinct from the extrude
+-// normals for line joins, because the x-value remains 0 for the texture
+-// normal array, while the extrude normal actually moves the vertex to create
+-// the acute/bevelled line join.
+-var EXTRUDE_SCALE = 63;
++  uniforms.height = 0.0
++  uniforms.permutation = DEFAULT_PERM
+ 
+-/*
+- * Sharp corners cause dashed lines to tilt because the distance along the line
+- * is the same at both the inner and outer corners. To improve the appearance of
+- * dashed lines we add extra points near sharp corners so that a smaller part
+- * of the line is tilted.
+- *
+- * COS_HALF_SHARP_CORNER controls how sharp a corner has to be for us to add an
+- * extra vertex. The default is 75 degrees.
+- *
+- * The newly created vertices are placed SHARP_CORNER_OFFSET pixels from the corner.
+- */
+-var COS_HALF_SHARP_CORNER = Math.cos(75 / 2 * (Math.PI / 180));
+-var SHARP_CORNER_OFFSET = 15;
++  // Compute camera matrix inverse
++  var invCameraMatrix = MATRIX_INVERSE
++  multiply(invCameraMatrix, uniforms.view, uniforms.model)
++  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
++  invert(invCameraMatrix, invCameraMatrix)
+ 
+-// The number of bits that is used to store the line distance in the buffer.
+-var LINE_DISTANCE_BUFFER_BITS = 14;
++  for (i = 0; i < 3; ++i) {
++    uniforms.eyePosition[i] = invCameraMatrix[12 + i] / invCameraMatrix[15]
++  }
+ 
+-// We don't have enough bits for the line distance as we'd like to have, so
+-// use this value to scale the line distance (in tile units) down to a smaller
+-// value. This lets us store longer distances while sacrificing precision.
+-var LINE_DISTANCE_SCALE = 1 / 2;
++  var w = invCameraMatrix[15]
++  for (i = 0; i < 3; ++i) {
++    w += this.lightPosition[i] * invCameraMatrix[4 * i + 3]
++  }
++  for (i = 0; i < 3; ++i) {
++    var s = invCameraMatrix[12 + i]
++    for (j = 0; j < 3; ++j) {
++      s += invCameraMatrix[4 * j + i] * this.lightPosition[j]
++    }
++    uniforms.lightPosition[i] = s / w
++  }
+ 
+-// The maximum line distance, in tile units, that fits in the buffer.
+-var MAX_LINE_DISTANCE = Math.pow(2, LINE_DISTANCE_BUFFER_BITS) / LINE_DISTANCE_SCALE;
++  var projectData = computeProjectionData(uniforms, this)
+ 
++  if (projectData.showSurface && (transparent === (this.opacity < 1))) {
++    // Set up uniforms
++    this._shader.bind()
++    this._shader.uniforms = uniforms
+ 
+-module.exports = LineBucket;
++    // Draw it
++    this._vao.bind()
+ 
+-/**
+- * @private
+- */
+-function LineBucket() {
+-    Bucket.apply(this, arguments);
+-}
++    if (this.showSurface && this._vertexCount) {
++      this._vao.draw(gl.TRIANGLES, this._vertexCount)
++    }
+ 
+-LineBucket.prototype = util.inherit(Bucket, {});
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      if (!this.surfaceProject[i] || !this.vertexCount) {
++        continue
++      }
++      this._shader.uniforms.model = projectData.projections[i]
++      this._shader.uniforms.clipBounds = projectData.clipBounds[i]
++      this._vao.draw(gl.TRIANGLES, this._vertexCount)
++    }
+ 
+-LineBucket.prototype.addLineVertex = function(vertexBuffer, point, extrude, tx, ty, dir, linesofar) {
+-    return vertexBuffer.emplaceBack(
+-            // a_pos
+-            (point.x << 1) | tx,
+-            (point.y << 1) | ty,
+-            // a_data
+-            // add 128 to store an byte in an unsigned byte
+-            Math.round(EXTRUDE_SCALE * extrude.x) + 128,
+-            Math.round(EXTRUDE_SCALE * extrude.y) + 128,
+-            // Encode the -1/0/1 direction value into the first two bits of .z of a_data.
+-            // Combine it with the lower 6 bits of `linesofar` (shifted by 2 bites to make
+-            // room for the direction value). The upper 8 bits of `linesofar` are placed in
+-            // the `w` component. `linesofar` is scaled down by `LINE_DISTANCE_SCALE` so that
+-            // we can store longer distances while sacrificing precision.
+-            ((dir === 0 ? 0 : (dir < 0 ? -1 : 1)) + 1) | (((linesofar * LINE_DISTANCE_SCALE) & 0x3F) << 2),
+-            (linesofar * LINE_DISTANCE_SCALE) >> 6);
+-};
++    this._vao.unbind()
++  }
+ 
+-LineBucket.prototype.programInterfaces = {
+-    line: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
++  if (projectData.showContour && !transparent) {
++    var shader = this._contourShader
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }, {
+-            name: 'a_data',
+-            components: 4,
+-            type: 'Uint8'
+-        }]
++    // Don't apply lighting to contours
++    uniforms.kambient = 1.0
++    uniforms.kdiffuse = 0.0
++    uniforms.kspecular = 0.0
++    uniforms.opacity = 1.0
++
++    shader.bind()
++    shader.uniforms = uniforms
++
++    // Draw contour lines
++    var vao = this._contourVAO
++    vao.bind()
++
++    // Draw contour levels
++    for (i = 0; i < 3; ++i) {
++      shader.uniforms.permutation = PERMUTATIONS[i]
++      gl.lineWidth(this.contourWidth[i])
++
++      for (j = 0; j < this.contourLevels[i].length; ++j) {
++        if (!this._contourCounts[i][j]) {
++          continue
++        }
++        if (j === this.highlightLevel[i]) {
++          shader.uniforms.contourColor = this.highlightColor[i]
++          shader.uniforms.contourTint = this.highlightTint[i]
++        } else if (j === 0 || (j - 1) === this.highlightLevel[i]) {
++          shader.uniforms.contourColor = this.contourColor[i]
++          shader.uniforms.contourTint = this.contourTint[i]
++        }
++        shader.uniforms.height = this.contourLevels[i][j]
++        vao.draw(gl.LINES, this._contourCounts[i][j], this._contourOffsets[i][j])
++      }
+     }
+-};
+ 
+-LineBucket.prototype.addFeature = function(feature) {
+-    var lines = loadGeometry(feature);
+-    for (var i = 0; i < lines.length; i++) {
+-        this.addLine(
+-            lines[i],
+-            this.layer.layout['line-join'],
+-            this.layer.layout['line-cap'],
+-            this.layer.layout['line-miter-limit'],
+-            this.layer.layout['line-round-limit']
+-        );
+-    }
+-};
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      shader.uniforms.model = projectData.projections[i]
++      shader.uniforms.clipBounds = projectData.clipBounds[i]
++      for (j = 0; j < 3; ++j) {
++        if (!this.contourProject[i][j]) {
++          continue
++        }
++        shader.uniforms.permutation = PERMUTATIONS[j]
++        gl.lineWidth(this.contourWidth[j])
++        for (var k = 0; k < this.contourLevels[j].length; ++k) {
++          if (k === this.highlightLevel[j]) {
++            shader.uniforms.contourColor = this.highlightColor[j]
++            shader.uniforms.contourTint = this.highlightTint[j]
++          } else if (k === 0 || (k - 1) === this.highlightLevel[j]) {
++            shader.uniforms.contourColor = this.contourColor[j]
++            shader.uniforms.contourTint = this.contourTint[j]
++          }
++          shader.uniforms.height = this.contourLevels[j][k]
++          vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
++        }
++      }
++    }
++
++    // Draw dynamic contours
++    vao = this._dynamicVAO
++    vao.bind()
++
++    // Draw contour levels
++    for (i = 0; i < 3; ++i) {
++      if (this._dynamicCounts[i] === 0) {
++        continue
++      }
++
++      shader.uniforms.model = uniforms.model
++      shader.uniforms.clipBounds = uniforms.clipBounds
++      shader.uniforms.permutation = PERMUTATIONS[i]
++      gl.lineWidth(this.dynamicWidth[i])
++
++      shader.uniforms.contourColor = this.dynamicColor[i]
++      shader.uniforms.contourTint = this.dynamicTint[i]
++      shader.uniforms.height = this.dynamicLevel[i]
++      vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
+ 
+-LineBucket.prototype.addLine = function(vertices, join, cap, miterLimit, roundLimit) {
++      for (j = 0; j < 3; ++j) {
++        if (!this.contourProject[j][i]) {
++          continue
++        }
+ 
+-    var len = vertices.length;
+-    // If the line has duplicate vertices at the end, adjust length to remove them.
+-    while (len > 2 && vertices[len - 1].equals(vertices[len - 2])) {
+-        len--;
++        shader.uniforms.model = projectData.projections[j]
++        shader.uniforms.clipBounds = projectData.clipBounds[j]
++        vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
++      }
+     }
+ 
+-    if (vertices.length < 2) {
+-        //console.warn('a line must have at least two vertices');
+-        return;
+-    }
++    vao.unbind()
++  }
++}
+ 
+-    if (join === 'bevel') miterLimit = 1.05;
++proto.draw = function (params) {
++  return drawCore.call(this, params, false)
++}
+ 
+-    var sharpCornerOffset = SHARP_CORNER_OFFSET * (EXTENT / (512 * this.overscaling));
++proto.drawTransparent = function (params) {
++  return drawCore.call(this, params, true)
++}
+ 
+-    var firstVertex = vertices[0],
+-        lastVertex = vertices[len - 1],
+-        closed = firstVertex.equals(lastVertex);
++var PICK_UNIFORMS = {
++  model: IDENTITY,
++  view: IDENTITY,
++  projection: IDENTITY,
++  inverseModel: IDENTITY,
++  clipBounds: [[0, 0, 0], [0, 0, 0]],
++  height: 0.0,
++  shape: [0, 0],
++  pickId: 0,
++  lowerBound: [0, 0, 0],
++  upperBound: [0, 0, 0],
++  zOffset: 0.0,
++  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
++  lightPosition: [0, 0, 0],
++  eyePosition: [0, 0, 0]
++}
+ 
+-    // we could be more precise, but it would only save a negligible amount of space
+-    this.makeRoomFor('line', len * 10);
++proto.drawPick = function (params) {
++  params = params || {}
++  var gl = this.gl
++  gl.disable(gl.CULL_FACE)
+ 
+-    if (len === 2 && closed) {
+-        // console.warn('a line may not have coincident points');
+-        return;
++  var uniforms = PICK_UNIFORMS
++  uniforms.model = params.model || IDENTITY
++  uniforms.view = params.view || IDENTITY
++  uniforms.projection = params.projection || IDENTITY
++  uniforms.shape = this._field[2].shape
++  uniforms.pickId = this.pickId / 255.0
++  uniforms.lowerBound = this.bounds[0]
++  uniforms.upperBound = this.bounds[1]
++  uniforms.permutation = DEFAULT_PERM
++
++  for (var i = 0; i < 2; ++i) {
++    var clipClamped = uniforms.clipBounds[i]
++    for (var j = 0; j < 3; ++j) {
++      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
+     }
++  }
+ 
+-    this.distance = 0;
++  var projectData = computeProjectionData(uniforms, this)
+ 
+-    var beginCap = cap,
+-        endCap = closed ? 'butt' : cap,
+-        startOfLine = true,
+-        currentVertex, prevVertex, nextVertex, prevNormal, nextNormal, offsetA, offsetB;
++  if (projectData.showSurface) {
++    // Set up uniforms
++    this._pickShader.bind()
++    this._pickShader.uniforms = uniforms
+ 
+-    // the last three vertices added
+-    this.e1 = this.e2 = this.e3 = -1;
++    // Draw it
++    this._vao.bind()
++    this._vao.draw(gl.TRIANGLES, this._vertexCount)
+ 
+-    if (closed) {
+-        currentVertex = vertices[len - 2];
+-        nextNormal = firstVertex.sub(currentVertex)._unit()._perp();
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      if (!this.surfaceProject[i]) {
++        continue
++      }
++      this._pickShader.uniforms.model = projectData.projections[i]
++      this._pickShader.uniforms.clipBounds = projectData.clipBounds[i]
++      this._vao.draw(gl.TRIANGLES, this._vertexCount)
+     }
+ 
+-    for (var i = 0; i < len; i++) {
++    this._vao.unbind()
++  }
+ 
+-        nextVertex = closed && i === len - 1 ?
+-            vertices[1] : // if the line is closed, we treat the last vertex like the first
+-            vertices[i + 1]; // just the next vertex
++  if (projectData.showContour) {
++    var shader = this._contourPickShader
+ 
+-        // if two consecutive vertices exist, skip the current one
+-        if (nextVertex && vertices[i].equals(nextVertex)) continue;
++    shader.bind()
++    shader.uniforms = uniforms
+ 
+-        if (nextNormal) prevNormal = nextNormal;
+-        if (currentVertex) prevVertex = currentVertex;
++    var vao = this._contourVAO
++    vao.bind()
+ 
+-        currentVertex = vertices[i];
++    for (j = 0; j < 3; ++j) {
++      gl.lineWidth(this.contourWidth[j])
++      shader.uniforms.permutation = PERMUTATIONS[j]
++      for (i = 0; i < this.contourLevels[j].length; ++i) {
++        if (this._contourCounts[j][i]) {
++          shader.uniforms.height = this.contourLevels[j][i]
++          vao.draw(gl.LINES, this._contourCounts[j][i], this._contourOffsets[j][i])
++        }
++      }
++    }
+ 
+-        // Calculate the normal towards the next vertex in this line. In case
+-        // there is no next vertex, pretend that the line is continuing straight,
+-        // meaning that we are just using the previous normal.
+-        nextNormal = nextVertex ? nextVertex.sub(currentVertex)._unit()._perp() : prevNormal;
++    // Draw projections of surface
++    for (i = 0; i < 3; ++i) {
++      shader.uniforms.model = projectData.projections[i]
++      shader.uniforms.clipBounds = projectData.clipBounds[i]
+ 
+-        // If we still don't have a previous normal, this is the beginning of a
+-        // non-closed line, so we're doing a straight "join".
+-        prevNormal = prevNormal || nextNormal;
++      for (j = 0; j < 3; ++j) {
++        if (!this.contourProject[i][j]) {
++          continue
++        }
+ 
+-        // Determine the normal of the join extrusion. It is the angle bisector
+-        // of the segments between the previous line and the next line.
+-        var joinNormal = prevNormal.add(nextNormal)._unit();
++        shader.uniforms.permutation = PERMUTATIONS[j]
++        gl.lineWidth(this.contourWidth[j])
++        for (var k = 0; k < this.contourLevels[j].length; ++k) {
++          if (this._contourCounts[j][k]) {
++            shader.uniforms.height = this.contourLevels[j][k]
++            vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
++          }
++        }
++      }
++    }
+ 
+-        /*  joinNormal     prevNormal
+-         *             ↖      ↑
+-         *                .________. prevVertex
+-         *                |
+-         * nextNormal  ←  |  currentVertex
+-         *                |
+-         *     nextVertex !
+-         *
+-         */
++    vao.unbind()
++  }
++}
+ 
+-        // Calculate the length of the miter (the ratio of the miter to the width).
+-        // Find the cosine of the angle between the next and join normals
+-        // using dot product. The inverse of that is the miter length.
+-        var cosHalfAngle = joinNormal.x * nextNormal.x + joinNormal.y * nextNormal.y;
+-        var miterLength = 1 / cosHalfAngle;
++proto.pick = function (selection) {
++  if (!selection) {
++    return null
++  }
+ 
+-        var isSharpCorner = cosHalfAngle < COS_HALF_SHARP_CORNER && prevVertex && nextVertex;
++  if (selection.id !== this.pickId) {
++    return null
++  }
+ 
+-        if (isSharpCorner && i > 0) {
+-            var prevSegmentLength = currentVertex.dist(prevVertex);
+-            if (prevSegmentLength > 2 * sharpCornerOffset) {
+-                var newPrevVertex = currentVertex.sub(currentVertex.sub(prevVertex)._mult(sharpCornerOffset / prevSegmentLength)._round());
+-                this.distance += newPrevVertex.dist(prevVertex);
+-                this.addCurrentVertex(newPrevVertex, this.distance, prevNormal.mult(1), 0, 0, false);
+-                prevVertex = newPrevVertex;
+-            }
+-        }
++  var shape = this._field[2].shape
+ 
+-        // The join if a middle vertex, otherwise the cap.
+-        var middleVertex = prevVertex && nextVertex;
+-        var currentJoin = middleVertex ? join : nextVertex ? beginCap : endCap;
++  var result = this._pickResult
+ 
+-        if (middleVertex && currentJoin === 'round') {
+-            if (miterLength < roundLimit) {
+-                currentJoin = 'miter';
+-            } else if (miterLength <= 2) {
+-                currentJoin = 'fakeround';
+-            }
+-        }
++  // Compute uv coordinate
++  var x = shape[0] * (selection.value[0] + (selection.value[2] >> 4) / 16.0) / 255.0
++  var ix = Math.floor(x)
++  var fx = x - ix
+ 
+-        if (currentJoin === 'miter' && miterLength > miterLimit) {
+-            currentJoin = 'bevel';
+-        }
++  var y = shape[1] * (selection.value[1] + (selection.value[2] & 15) / 16.0) / 255.0
++  var iy = Math.floor(y)
++  var fy = y - iy
+ 
+-        if (currentJoin === 'bevel') {
+-            // The maximum extrude length is 128 / 63 = 2 times the width of the line
+-            // so if miterLength >= 2 we need to draw a different type of bevel where.
+-            if (miterLength > 2) currentJoin = 'flipbevel';
++  ix += 1
++  iy += 1
+ 
+-            // If the miterLength is really small and the line bevel wouldn't be visible,
+-            // just draw a miter join to save a triangle.
+-            if (miterLength < miterLimit) currentJoin = 'miter';
+-        }
++  // Compute xyz coordinate
++  var pos = result.position
++  pos[0] = pos[1] = pos[2] = 0
++  for (var dx = 0; dx < 2; ++dx) {
++    var s = dx ? fx : 1.0 - fx
++    for (var dy = 0; dy < 2; ++dy) {
++      var t = dy ? fy : 1.0 - fy
+ 
+-        // Calculate how far along the line the currentVertex is
+-        if (prevVertex) this.distance += currentVertex.dist(prevVertex);
++      var r = ix + dx
++      var c = iy + dy
++      var w = s * t
+ 
+-        if (currentJoin === 'miter') {
++      for (var i = 0; i < 3; ++i) {
++        pos[i] += this._field[i].get(r, c) * w
++      }
++    }
++  }
+ 
+-            joinNormal._mult(miterLength);
+-            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
++  // Find closest level
++  var levelIndex = this._pickResult.level
++  for (var j = 0; j < 3; ++j) {
++    levelIndex[j] = bsearch.le(this.contourLevels[j], pos[j])
++    if (levelIndex[j] < 0) {
++      if (this.contourLevels[j].length > 0) {
++        levelIndex[j] = 0
++      }
++    } else if (levelIndex[j] < this.contourLevels[j].length - 1) {
++      var a = this.contourLevels[j][levelIndex[j]]
++      var b = this.contourLevels[j][levelIndex[j] + 1]
++      if (Math.abs(a - pos[j]) > Math.abs(b - pos[j])) {
++        levelIndex[j] += 1
++      }
++    }
++  }
+ 
+-        } else if (currentJoin === 'flipbevel') {
+-            // miter is too big, flip the direction to make a beveled join
++  result.index[0] = fx < 0.5 ? ix : (ix + 1)
++  result.index[1] = fy < 0.5 ? iy : (iy + 1)
+ 
+-            if (miterLength > 100) {
+-                // Almost parallel lines
+-                joinNormal = nextNormal.clone();
++  result.uv[0] = x / shape[0]
++  result.uv[1] = y / shape[1]
+ 
+-            } else {
+-                var direction = prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x > 0 ? -1 : 1;
+-                var bevelLength = miterLength * prevNormal.add(nextNormal).mag() / prevNormal.sub(nextNormal).mag();
+-                joinNormal._perp()._mult(bevelLength * direction);
+-            }
+-            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
+-            this.addCurrentVertex(currentVertex, this.distance, joinNormal.mult(-1), 0, 0, false);
++  for (i = 0; i < 3; ++i) {
++    result.dataCoordinate[i] = this._field[i].get(result.index[0], result.index[1])
++  }
+ 
+-        } else if (currentJoin === 'bevel' || currentJoin === 'fakeround') {
+-            var lineTurnsLeft = (prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x) > 0;
+-            var offset = -Math.sqrt(miterLength * miterLength - 1);
+-            if (lineTurnsLeft) {
+-                offsetB = 0;
+-                offsetA = offset;
+-            } else {
+-                offsetA = 0;
+-                offsetB = offset;
+-            }
++  return result
++}
+ 
+-            // Close previous segment with a bevel
+-            if (!startOfLine) {
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, offsetA, offsetB, false);
+-            }
++function padField (nfield, field) {
++  var shape = field.shape.slice()
++  var nshape = nfield.shape.slice()
+ 
+-            if (currentJoin === 'fakeround') {
+-                // The join angle is sharp enough that a round join would be visible.
+-                // Bevel joins fill the gap between segments with a single pie slice triangle.
+-                // Create a round join by adding multiple pie slices. The join isn't actually round, but
+-                // it looks like it is at the sizes we render lines at.
++  // Center
++  ops.assign(nfield.lo(1, 1).hi(shape[0], shape[1]), field)
+ 
+-                // Add more triangles for sharper angles.
+-                // This math is just a good enough approximation. It isn't "correct".
+-                var n = Math.floor((0.5 - (cosHalfAngle - 0.5)) * 8);
+-                var approxFractionalJoinNormal;
++  // Edges
++  ops.assign(nfield.lo(1).hi(shape[0], 1),
++    field.hi(shape[0], 1))
++  ops.assign(nfield.lo(1, nshape[1] - 1).hi(shape[0], 1),
++    field.lo(0, shape[1] - 1).hi(shape[0], 1))
++  ops.assign(nfield.lo(0, 1).hi(1, shape[1]),
++    field.hi(1))
++  ops.assign(nfield.lo(nshape[0] - 1, 1).hi(1, shape[1]),
++    field.lo(shape[0] - 1))
++  // Corners
++  nfield.set(0, 0, field.get(0, 0))
++  nfield.set(0, nshape[1] - 1, field.get(0, shape[1] - 1))
++  nfield.set(nshape[0] - 1, 0, field.get(shape[0] - 1, 0))
++  nfield.set(nshape[0] - 1, nshape[1] - 1, field.get(shape[0] - 1, shape[1] - 1))
++}
+ 
+-                for (var m = 0; m < n; m++) {
+-                    approxFractionalJoinNormal = nextNormal.mult((m + 1) / (n + 1))._add(prevNormal)._unit();
+-                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
+-                }
++function handleArray (param, ctor) {
++  if (Array.isArray(param)) {
++    return [ ctor(param[0]), ctor(param[1]), ctor(param[2]) ]
++  }
++  return [ ctor(param), ctor(param), ctor(param) ]
++}
+ 
+-                this.addPieSliceVertex(currentVertex, this.distance, joinNormal, lineTurnsLeft);
++function toColor (x) {
++  if (Array.isArray(x)) {
++    if (x.length === 3) {
++      return [x[0], x[1], x[2], 1]
++    }
++    return [x[0], x[1], x[2], x[3]]
++  }
++  return [0, 0, 0, 1]
++}
+ 
+-                for (var k = n - 1; k >= 0; k--) {
+-                    approxFractionalJoinNormal = prevNormal.mult((k + 1) / (n + 1))._add(nextNormal)._unit();
+-                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
+-                }
+-            }
++function handleColor (param) {
++  if (Array.isArray(param)) {
++    if (Array.isArray(param)) {
++      return [
++        toColor(param[0]),
++        toColor(param[1]),
++        toColor(param[2]) ]
++    } else {
++      var c = toColor(param)
++      return [
++        c.slice(),
++        c.slice(),
++        c.slice() ]
++    }
++  }
++}
+ 
+-            // Start next segment
+-            if (nextVertex) {
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -offsetA, -offsetB, false);
+-            }
++proto.update = function (params) {
++  params = params || {}
+ 
+-        } else if (currentJoin === 'butt') {
+-            if (!startOfLine) {
+-                // Close previous segment with a butt
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
+-            }
++  this.dirty = true
+ 
+-            // Start next segment with a butt
+-            if (nextVertex) {
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
+-            }
++  if ('contourWidth' in params) {
++    this.contourWidth = handleArray(params.contourWidth, Number)
++  }
++  if ('showContour' in params) {
++    this.showContour = handleArray(params.showContour, Boolean)
++  }
++  if ('showSurface' in params) {
++    this.showSurface = !!params.showSurface
++  }
++  if ('contourTint' in params) {
++    this.contourTint = handleArray(params.contourTint, Boolean)
++  }
++  if ('contourColor' in params) {
++    this.contourColor = handleColor(params.contourColor)
++  }
++  if ('contourProject' in params) {
++    this.contourProject = handleArray(params.contourProject, function (x) {
++      return handleArray(x, Boolean)
++    })
++  }
++  if ('surfaceProject' in params) {
++    this.surfaceProject = params.surfaceProject
++  }
++  if ('dynamicColor' in params) {
++    this.dynamicColor = handleColor(params.dynamicColor)
++  }
++  if ('dynamicTint' in params) {
++    this.dynamicTint = handleArray(params.dynamicTint, Number)
++  }
++  if ('dynamicWidth' in params) {
++    this.dynamicWidth = handleArray(params.dynamicWidth, Number)
++  }
++  if ('opacity' in params) {
++    this.opacity = params.opacity
++  }
++  if ('colorBounds' in params) {
++    this.colorBounds = params.colorBounds
++  }
+ 
+-        } else if (currentJoin === 'square') {
++  var field = params.field || (params.coords && params.coords[2]) || null
++  var levelsChanged = false
+ 
+-            if (!startOfLine) {
+-                // Close previous segment with a square cap
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, false);
++  if (!field) {
++    if (this._field[2].shape[0] || this._field[2].shape[2]) {
++      field = this._field[2].lo(1, 1).hi(this._field[2].shape[0] - 2, this._field[2].shape[1] - 2)
++    } else {
++      field = this._field[2].hi(0, 0)
++    }
++  }
+ 
+-                // The segment is done. Unset vertices to disconnect segments.
+-                this.e1 = this.e2 = -1;
+-            }
++  // Update field
++  if ('field' in params || 'coords' in params) {
++    var fsize = (field.shape[0] + 2) * (field.shape[1] + 2)
+ 
+-            // Start next segment
+-            if (nextVertex) {
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, false);
+-            }
++    // Resize if necessary
++    if (fsize > this._field[2].data.length) {
++      pool.freeFloat(this._field[2].data)
++      this._field[2].data = pool.mallocFloat(bits.nextPow2(fsize))
++    }
+ 
+-        } else if (currentJoin === 'round') {
++    // Pad field
++    this._field[2] = ndarray(this._field[2].data, [field.shape[0] + 2, field.shape[1] + 2])
++    padField(this._field[2], field)
+ 
+-            if (!startOfLine) {
+-                // Close previous segment with butt
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
++    // Save shape of field
++    this.shape = field.shape.slice()
++    var shape = this.shape
++
++    // Resize coordinate fields if necessary
++    for (var i = 0; i < 2; ++i) {
++      if (this._field[2].size > this._field[i].data.length) {
++        pool.freeFloat(this._field[i].data)
++        this._field[i].data = pool.mallocFloat(this._field[2].size)
++      }
++      this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2])
++    }
++
++    // Generate x/y coordinates
++    if (params.coords) {
++      var coords = params.coords
++      if (!Array.isArray(coords) || coords.length !== 3) {
++        throw new Error('gl-surface: invalid coordinates for x/y')
++      }
++      for (i = 0; i < 2; ++i) {
++        var coord = coords[i]
++        for (j = 0; j < 2; ++j) {
++          if (coord.shape[j] !== shape[j]) {
++            throw new Error('gl-surface: coords have incorrect shape')
++          }
++        }
++        padField(this._field[i], coord)
++      }
++    } else if (params.ticks) {
++      var ticks = params.ticks
++      if (!Array.isArray(ticks) || ticks.length !== 2) {
++        throw new Error('gl-surface: invalid ticks')
++      }
++      for (i = 0; i < 2; ++i) {
++        var tick = ticks[i]
++        if (Array.isArray(tick) || tick.length) {
++          tick = ndarray(tick)
++        }
++        if (tick.shape[0] !== shape[i]) {
++          throw new Error('gl-surface: invalid tick length')
++        }
++        // Make a copy view of the tick array
++        var tick2 = ndarray(tick.data, shape)
++        tick2.stride[i] = tick.stride[0]
++        tick2.stride[i ^ 1] = 0
+ 
+-                // Add round cap or linejoin at end of segment
+-                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, true);
++        // Fill in field array
++        padField(this._field[i], tick2)
++      }
++    } else {
++      for (i = 0; i < 2; ++i) {
++        var offset = [0, 0]
++        offset[i] = 1
++        this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2], offset, 0)
++      }
++      this._field[0].set(0, 0, 0)
++      for (var j = 0; j < shape[0]; ++j) {
++        this._field[0].set(j + 1, 0, j)
++      }
++      this._field[0].set(shape[0] + 1, 0, shape[0] - 1)
++      this._field[1].set(0, 0, 0)
++      for (j = 0; j < shape[1]; ++j) {
++        this._field[1].set(0, j + 1, j)
++      }
++      this._field[1].set(0, shape[1] + 1, shape[1] - 1)
++    }
+ 
+-                // The segment is done. Unset vertices to disconnect segments.
+-                this.e1 = this.e2 = -1;
+-            }
++    // Save shape
++    var fields = this._field
+ 
++    // Compute surface normals
++    var dfields = ndarray(pool.mallocFloat(fields[2].size * 3 * 2), [3, shape[0] + 2, shape[1] + 2, 2])
++    for (i = 0; i < 3; ++i) {
++      gradient(dfields.pick(i), fields[i], 'mirror')
++    }
++    var normals = ndarray(pool.mallocFloat(fields[2].size * 3), [shape[0] + 2, shape[1] + 2, 3])
++    for (i = 0; i < shape[0] + 2; ++i) {
++      for (j = 0; j < shape[1] + 2; ++j) {
++        var dxdu = dfields.get(0, i, j, 0)
++        var dxdv = dfields.get(0, i, j, 1)
++        var dydu = dfields.get(1, i, j, 0)
++        var dydv = dfields.get(1, i, j, 1)
++        var dzdu = dfields.get(2, i, j, 0)
++        var dzdv = dfields.get(2, i, j, 1)
+ 
+-            // Start next segment with a butt
+-            if (nextVertex) {
+-                // Add round cap before first segment
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, true);
++        var nx = dydu * dzdv - dydv * dzdu
++        var ny = dzdu * dxdv - dzdv * dxdu
++        var nz = dxdu * dydv - dxdv * dydu
+ 
+-                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
+-            }
++        var nl = Math.sqrt(nx * nx + ny * ny + nz * nz)
++        if (nl < 1e-8) {
++          nl = Math.max(Math.abs(nx), Math.abs(ny), Math.abs(nz))
++          if (nl < 1e-8) {
++            nz = 1.0
++            ny = nx = 0.0
++            nl = 1.0
++          } else {
++            nl = 1.0 / nl
++          }
++        } else {
++          nl = 1.0 / Math.sqrt(nl)
+         }
+ 
+-        if (isSharpCorner && i < len - 1) {
+-            var nextSegmentLength = currentVertex.dist(nextVertex);
+-            if (nextSegmentLength > 2 * sharpCornerOffset) {
+-                var newCurrentVertex = currentVertex.add(nextVertex.sub(currentVertex)._mult(sharpCornerOffset / nextSegmentLength)._round());
+-                this.distance += newCurrentVertex.dist(currentVertex);
+-                this.addCurrentVertex(newCurrentVertex, this.distance, nextNormal.mult(1), 0, 0, false);
+-                currentVertex = newCurrentVertex;
++        normals.set(i, j, 0, nx * nl)
++        normals.set(i, j, 1, ny * nl)
++        normals.set(i, j, 2, nz * nl)
++      }
++    }
++    pool.free(dfields.data)
++
++    // Initialize surface
++    var lo = [ Infinity, Infinity, Infinity ]
++    var hi = [ -Infinity, -Infinity, -Infinity ]
++    var lo_intensity = Infinity
++    var hi_intensity = -Infinity
++    var count = (shape[0] - 1) * (shape[1] - 1) * 6
++    var tverts = pool.mallocFloat(bits.nextPow2(10 * count))
++    var tptr = 0
++    var vertexCount = 0
++    for (i = 0; i < shape[0] - 1; ++i) {
++      j_loop:
++      for (j = 0; j < shape[1] - 1; ++j) {
++        // Test for NaNs
++        for (var dx = 0; dx < 2; ++dx) {
++          for (var dy = 0; dy < 2; ++dy) {
++            for (var k = 0; k < 3; ++k) {
++              var f = this._field[k].get(1 + i + dx, 1 + j + dy)
++              if (isNaN(f) || !isFinite(f)) {
++                continue j_loop
++              }
+             }
++          }
+         }
++        for (k = 0; k < 6; ++k) {
++          var r = i + QUAD[k][0]
++          var c = j + QUAD[k][1]
+ 
+-        startOfLine = false;
+-    }
++          var tx = this._field[0].get(r + 1, c + 1)
++          var ty = this._field[1].get(r + 1, c + 1)
++          f = this._field[2].get(r + 1, c + 1)
++          var vf = f
++          nx = normals.get(r + 1, c + 1, 0)
++          ny = normals.get(r + 1, c + 1, 1)
++          nz = normals.get(r + 1, c + 1, 2)
+ 
+-};
++          if (params.intensity) {
++            vf = params.intensity.get(r, c)
++          }
+ 
+-/**
+- * Add two vertices to the buffers.
+- *
+- * @param {Object} currentVertex the line vertex to add buffer vertices for
+- * @param {number} distance the distance from the beginning of the line to the vertex
+- * @param {number} endLeft extrude to shift the left vertex along the line
+- * @param {number} endRight extrude to shift the left vertex along the line
+- * @param {boolean} round whether this is a round cap
+- * @private
+- */
+-LineBucket.prototype.addCurrentVertex = function(currentVertex, distance, normal, endLeft, endRight, round) {
+-    var tx = round ? 1 : 0;
+-    var extrude;
+-    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
+-    var vertexArray = layoutArrays.vertex;
+-    var elementArray = layoutArrays.element;
++          tverts[tptr++] = r
++          tverts[tptr++] = c
++          tverts[tptr++] = tx
++          tverts[tptr++] = ty
++          tverts[tptr++] = f
++          tverts[tptr++] = 0
++          tverts[tptr++] = vf
++          tverts[tptr++] = nx
++          tverts[tptr++] = ny
++          tverts[tptr++] = nz
+ 
+-    extrude = normal.clone();
+-    if (endLeft) extrude._sub(normal.perp()._mult(endLeft));
+-    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 0, endLeft, distance);
+-    if (this.e1 >= 0 && this.e2 >= 0) {
+-        elementArray.emplaceBack(this.e1, this.e2, this.e3);
+-    }
+-    this.e1 = this.e2;
+-    this.e2 = this.e3;
++          lo[0] = Math.min(lo[0], tx)
++          lo[1] = Math.min(lo[1], ty)
++          lo[2] = Math.min(lo[2], f)
++          lo_intensity = Math.min(lo_intensity, vf)
+ 
+-    extrude = normal.mult(-1);
+-    if (endRight) extrude._sub(normal.perp()._mult(endRight));
+-    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 1, -endRight, distance);
+-    if (this.e1 >= 0 && this.e2 >= 0) {
+-        elementArray.emplaceBack(this.e1, this.e2, this.e3);
+-    }
+-    this.e1 = this.e2;
+-    this.e2 = this.e3;
++          hi[0] = Math.max(hi[0], tx)
++          hi[1] = Math.max(hi[1], ty)
++          hi[2] = Math.max(hi[2], f)
++          hi_intensity = Math.max(hi_intensity, vf)
+ 
+-    // There is a maximum "distance along the line" that we can store in the buffers.
+-    // When we get close to the distance, reset it to zero and add the vertex again with
+-    // a distance of zero. The max distance is determined by the number of bits we allocate
+-    // to `linesofar`.
+-    if (distance > MAX_LINE_DISTANCE / 2) {
+-        this.distance = 0;
+-        this.addCurrentVertex(currentVertex, this.distance, normal, endLeft, endRight, round);
++          vertexCount += 1
++        }
++      }
+     }
+-};
+-
+-/**
+- * Add a single new vertex and a triangle using two previous vertices.
+- * This adds a pie slice triangle near a join to simulate round joins
+- *
+- * @param {Object} currentVertex the line vertex to add buffer vertices for
+- * @param {number} distance the distance from the beggining of the line to the vertex
+- * @param {Object} extrude the offset of the new vertex from the currentVertex
+- * @param {boolean} whether the line is turning left or right at this angle
+- * @private
+- */
+-LineBucket.prototype.addPieSliceVertex = function(currentVertex, distance, extrude, lineTurnsLeft) {
+-    var ty = lineTurnsLeft ? 1 : 0;
+-    extrude = extrude.mult(lineTurnsLeft ? -1 : 1);
+-    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
+-    var vertexArray = layoutArrays.vertex;
+-    var elementArray = layoutArrays.element;
+ 
+-    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, 0, ty, 0, distance);
+-
+-    if (this.e1 >= 0 && this.e2 >= 0) {
+-        elementArray.emplaceBack(this.e1, this.e2, this.e3);
++    if (params.intensityBounds) {
++      lo_intensity = +params.intensityBounds[0]
++      hi_intensity = +params.intensityBounds[1]
+     }
+ 
+-    if (lineTurnsLeft) {
+-        this.e2 = this.e3;
+-    } else {
+-        this.e1 = this.e3;
++    // Scale all vertex intensities
++    for (i = 6; i < tptr; i += 10) {
++      tverts[i] = (tverts[i] - lo_intensity) / (hi_intensity - lo_intensity)
+     }
+-};
+-
+-},{"../../util/util":349,"../bucket":247,"../load_geometry":254}],251:[function(require,module,exports){
+-'use strict';
+-
+-var Point = require('point-geometry');
+-
+-var Bucket = require('../bucket');
+-var Anchor = require('../../symbol/anchor');
+-var getAnchors = require('../../symbol/get_anchors');
+-var resolveTokens = require('../../util/token');
+-var Quads = require('../../symbol/quads');
+-var Shaping = require('../../symbol/shaping');
+-var resolveText = require('../../symbol/resolve_text');
+-var mergeLines = require('../../symbol/mergelines');
+-var clipLine = require('../../symbol/clip_line');
+-var util = require('../../util/util');
+-var loadGeometry = require('../load_geometry');
+-var CollisionFeature = require('../../symbol/collision_feature');
+ 
+-var shapeText = Shaping.shapeText;
+-var shapeIcon = Shaping.shapeIcon;
+-var getGlyphQuads = Quads.getGlyphQuads;
+-var getIconQuads = Quads.getIconQuads;
+-
+-var EXTENT = Bucket.EXTENT;
+-
+-module.exports = SymbolBucket;
++    this._vertexCount = vertexCount
++    this._coordinateBuffer.update(tverts.subarray(0, tptr))
++    pool.freeFloat(tverts)
++    pool.free(normals.data)
+ 
+-function SymbolBucket(options) {
+-    Bucket.apply(this, arguments);
+-    this.showCollisionBoxes = options.showCollisionBoxes;
+-    this.overscaling = options.overscaling;
+-    this.collisionBoxArray = options.collisionBoxArray;
++    // Update bounds
++    this.bounds = [lo, hi]
+ 
+-    this.sdfIcons = options.sdfIcons;
+-    this.iconsNeedLinear = options.iconsNeedLinear;
+-    this.adjustedTextSize = options.adjustedTextSize;
+-    this.adjustedIconSize = options.adjustedIconSize;
+-    this.fontstack = options.fontstack;
+-}
++    // Save intensity
++    this.intensity = params.intensity || this._field[2]
+ 
+-SymbolBucket.prototype = util.inherit(Bucket, {});
++    if(this.intensityBounds[0] !== lo_intensity || this.intensityBounds[1] !== hi_intensity) {
++        levelsChanged = true
++    }
+ 
+-SymbolBucket.prototype.serialize = function() {
+-    var serialized = Bucket.prototype.serialize.apply(this);
+-    serialized.sdfIcons = this.sdfIcons;
+-    serialized.iconsNeedLinear = this.iconsNeedLinear;
+-    serialized.adjustedTextSize = this.adjustedTextSize;
+-    serialized.adjustedIconSize = this.adjustedIconSize;
+-    serialized.fontstack = this.fontstack;
+-    return serialized;
+-};
++    // Save intensity bound
++    this.intensityBounds = [lo_intensity, hi_intensity]
++  }
+ 
+-var programAttributes = [{
+-    name: 'a_pos',
+-    components: 2,
+-    type: 'Int16'
+-}, {
+-    name: 'a_offset',
+-    components: 2,
+-    type: 'Int16'
+-}, {
+-    name: 'a_data1',
+-    components: 4,
+-    type: 'Uint8'
+-}, {
+-    name: 'a_data2',
+-    components: 2,
+-    type: 'Uint8'
+-}];
++  // Update level crossings
++  if ('levels' in params) {
++    var levels = params.levels
++    if (!Array.isArray(levels[0])) {
++      levels = [ [], [], levels ]
++    } else {
++      levels = levels.slice()
++    }
++    for (i = 0; i < 3; ++i) {
++      levels[i] = levels[i].slice()
++      levels.sort(function (a, b) {
++        return a - b
++      })
++    }
++    change_test:
++    for (i = 0; i < 3; ++i) {
++      if (levels[i].length !== this.contourLevels[i].length) {
++        levelsChanged = true
++        break
++      }
++      for (j = 0; j < levels[i].length; ++j) {
++        if (levels[i][j] !== this.contourLevels[i][j]) {
++          levelsChanged = true
++          break change_test
++        }
++      }
++    }
++    this.contourLevels = levels
++  }
+ 
+-function addVertex(array, x, y, ox, oy, tx, ty, minzoom, maxzoom, labelminzoom) {
+-    return array.emplaceBack(
+-            // pos
+-            x,
+-            y,
+-            // offset
+-            Math.round(ox * 64), // use 1/64 pixels for placement
+-            Math.round(oy * 64),
+-            // data1
+-            tx / 4,                   // tex
+-            ty / 4,                   // tex
+-            (labelminzoom || 0) * 10, // labelminzoom
+-            0,
+-            // data2
+-            (minzoom || 0) * 10,               // minzoom
+-            Math.min(maxzoom || 25, 25) * 10); // minzoom
+-}
++  if (levelsChanged) {
++    fields = this._field
++    shape = this.shape
+ 
+-SymbolBucket.prototype.addCollisionBoxVertex = function(vertexArray, point, extrude, maxZoom, placementZoom) {
+-    return vertexArray.emplaceBack(
+-            // pos
+-            point.x,
+-            point.y,
+-            // extrude
+-            Math.round(extrude.x),
+-            Math.round(extrude.y),
+-            // data
+-            maxZoom * 10,
+-            placementZoom * 10);
+-};
++    // Update contour lines
++    var contourVerts = []
+ 
+-SymbolBucket.prototype.programInterfaces = {
++    for (var dim = 0; dim < 3; ++dim) {
++      levels = this.contourLevels[dim]
++      var levelOffsets = []
++      var levelCounts = []
+ 
+-    glyph: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
+-        layoutAttributes: programAttributes
+-    },
++      var parts = [0, 0, 0]
+ 
+-    icon: {
+-        vertexBuffer: true,
+-        elementBuffer: true,
+-        layoutAttributes: programAttributes
+-    },
++      for (i = 0; i < levels.length; ++i) {
++        var graph = surfaceNets(this._field[dim], levels[i])
++        levelOffsets.push((contourVerts.length / 5) | 0)
++        vertexCount = 0
+ 
+-    collisionBox: {
+-        vertexBuffer: true,
++        edge_loop:
++        for (j = 0; j < graph.cells.length; ++j) {
++          var e = graph.cells[j]
++          for (k = 0; k < 2; ++k) {
++            var p = graph.positions[e[k]]
+ 
+-        layoutAttributes: [{
+-            name: 'a_pos',
+-            components: 2,
+-            type: 'Int16'
+-        }, {
+-            name: 'a_extrude',
+-            components: 2,
+-            type: 'Int16'
+-        }, {
+-            name: 'a_data',
+-            components: 2,
+-            type: 'Uint8'
+-        }]
+-    }
+-};
++            var x = p[0]
++            var ix = Math.floor(x) | 0
++            var fx = x - ix
+ 
+-SymbolBucket.prototype.populateBuffers = function(collisionTile, stacks, icons) {
++            var y = p[1]
++            var iy = Math.floor(y) | 0
++            var fy = y - iy
+ 
+-    // To reduce the number of labels that jump around when zooming we need
+-    // to use a text-size value that is the same for all zoom levels.
+-    // This calculates text-size at a high zoom level so that all tiles can
+-    // use the same value when calculating anchor positions.
+-    var zoomHistory = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
+-    this.adjustedTextMaxSize = this.layer.getLayoutValue('text-size', {zoom: 18, zoomHistory: zoomHistory});
+-    this.adjustedTextSize = this.layer.getLayoutValue('text-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
+-    this.adjustedIconMaxSize = this.layer.getLayoutValue('icon-size', {zoom: 18, zoomHistory: zoomHistory});
+-    this.adjustedIconSize = this.layer.getLayoutValue('icon-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
++            var hole = false
++            dd_loop:
++            for (var dd = 0; dd < 3; ++dd) {
++              parts[dd] = 0.0
++              var iu = (dim + dd + 1) % 3
++              for (dx = 0; dx < 2; ++dx) {
++                var s = dx ? fx : 1.0 - fx
++                r = Math.min(Math.max(ix + dx, 0), shape[0]) | 0
++                for (dy = 0; dy < 2; ++dy) {
++                  var t = dy ? fy : 1.0 - fy
++                  c = Math.min(Math.max(iy + dy, 0), shape[1]) | 0
+ 
+-    var tileSize = 512 * this.overscaling;
+-    this.tilePixelRatio = EXTENT / tileSize;
+-    this.compareText = {};
+-    this.symbolInstances = [];
+-    this.iconsNeedLinear = false;
++                  if (dd < 2) {
++                    f = this._field[iu].get(r, c)
++                  } else {
++                    f = (this.intensity.get(r, c) - this.intensityBounds[0]) / (this.intensityBounds[1] - this.intensityBounds[0])
++                  }
++                  if (!isFinite(f) || isNaN(f)) {
++                    hole = true
++                    break dd_loop
++                  }
+ 
+-    var layout = this.layer.layout;
+-    var features = this.features;
+-    var textFeatures = this.textFeatures;
++                  var w = s * t
++                  parts[dd] += w * f
++                }
++              }
++            }
+ 
+-    var horizontalAlign = 0.5,
+-        verticalAlign = 0.5;
++            if (!hole) {
++              contourVerts.push(parts[0], parts[1], p[0], p[1], parts[2])
++              vertexCount += 1
++            } else {
++              if (k > 0) {
++                // If we already added first edge, pop off verts
++                for (var l = 0; l < 5; ++l) {
++                  contourVerts.pop()
++                }
++                vertexCount -= 1
++              }
++              continue edge_loop
++            }
++          }
++        }
++        levelCounts.push(vertexCount)
++      }
+ 
+-    switch (layout['text-anchor']) {
+-    case 'right':
+-    case 'top-right':
+-    case 'bottom-right':
+-        horizontalAlign = 1;
+-        break;
+-    case 'left':
+-    case 'top-left':
+-    case 'bottom-left':
+-        horizontalAlign = 0;
+-        break;
++      // Store results
++      this._contourOffsets[dim] = levelOffsets
++      this._contourCounts[dim] = levelCounts
+     }
+ 
+-    switch (layout['text-anchor']) {
+-    case 'bottom':
+-    case 'bottom-right':
+-    case 'bottom-left':
+-        verticalAlign = 1;
+-        break;
+-    case 'top':
+-    case 'top-right':
+-    case 'top-left':
+-        verticalAlign = 0;
+-        break;
++    var floatBuffer = pool.mallocFloat(contourVerts.length)
++    for (i = 0; i < contourVerts.length; ++i) {
++      floatBuffer[i] = contourVerts[i]
+     }
++    this._contourBuffer.update(floatBuffer)
++    pool.freeFloat(floatBuffer)
++  }
+ 
+-    var justify = layout['text-justify'] === 'right' ? 1 :
+-        layout['text-justify'] === 'left' ? 0 :
+-        0.5;
+-
+-    var oneEm = 24;
+-    var lineHeight = layout['text-line-height'] * oneEm;
+-    var maxWidth = layout['symbol-placement'] !== 'line' ? layout['text-max-width'] * oneEm : 0;
+-    var spacing = layout['text-letter-spacing'] * oneEm;
+-    var textOffset = [layout['text-offset'][0] * oneEm, layout['text-offset'][1] * oneEm];
+-    var fontstack = this.fontstack = layout['text-font'].join(',');
++  if (params.colormap) {
++    this._colorMap.setPixels(genColormap(params.colormap))
++  }
++}
+ 
+-    var geometries = [];
+-    for (var g = 0; g < features.length; g++) {
+-        geometries.push(loadGeometry(features[g]));
+-    }
++proto.dispose = function () {
++  this._shader.dispose()
++  this._vao.dispose()
++  this._coordinateBuffer.dispose()
++  this._colorMap.dispose()
++  this._contourBuffer.dispose()
++  this._contourVAO.dispose()
++  this._contourShader.dispose()
++  this._contourPickShader.dispose()
++  this._dynamicBuffer.dispose()
++  this._dynamicVAO.dispose()
++  for (var i = 0; i < 3; ++i) {
++    pool.freeFloat(this._field[i].data)
++  }
++}
+ 
+-    if (layout['symbol-placement'] === 'line') {
+-        // Merge adjacent lines with the same text to improve labelling.
+-        // It's better to place labels on one long line than on many short segments.
+-        var merged = mergeLines(features, textFeatures, geometries);
++proto.highlight = function (selection) {
++  if (!selection) {
++    this._dynamicCounts = [0, 0, 0]
++    this.dyanamicLevel = [NaN, NaN, NaN]
++    this.highlightLevel = [-1, -1, -1]
++    return
++  }
+ 
+-        geometries = merged.geometries;
+-        features = merged.features;
+-        textFeatures = merged.textFeatures;
++  for (var i = 0; i < 3; ++i) {
++    if (this.enableHighlight[i]) {
++      this.highlightLevel[i] = selection.level[i]
++    } else {
++      this.highlightLevel[i] = -1
+     }
++  }
+ 
+-    var shapedText, shapedIcon;
++  var levels
++  if (this.snapToData) {
++    levels = selection.dataCoordinate
++  } else {
++    levels = selection.position
++  }
++  if ((!this.enableDynamic[0] || levels[0] === this.dynamicLevel[0]) &&
++    (!this.enableDynamic[1] || levels[1] === this.dynamicLevel[1]) &&
++    (!this.enableDynamic[2] || levels[2] === this.dynamicLevel[2])) {
++    return
++  }
+ 
+-    for (var k = 0; k < features.length; k++) {
+-        if (!geometries[k]) continue;
++  var vertexCount = 0
++  var shape = this.shape
++  var scratchBuffer = pool.mallocFloat(12 * shape[0] * shape[1])
+ 
+-        if (textFeatures[k]) {
+-            shapedText = shapeText(textFeatures[k], stacks[fontstack], maxWidth,
+-                    lineHeight, horizontalAlign, verticalAlign, justify, spacing, textOffset);
+-        } else {
+-            shapedText = null;
+-        }
++  for (var d = 0; d < 3; ++d) {
++    if (!this.enableDynamic[d]) {
++      this.dynamicLevel[d] = NaN
++      this._dynamicCounts[d] = 0
++      continue
++    }
+ 
+-        if (layout['icon-image']) {
+-            var iconName = resolveTokens(features[k].properties, layout['icon-image']);
+-            var image = icons[iconName];
+-            shapedIcon = shapeIcon(image, layout);
++    this.dynamicLevel[d] = levels[d]
+ 
+-            if (image) {
+-                if (this.sdfIcons === undefined) {
+-                    this.sdfIcons = image.sdf;
+-                } else if (this.sdfIcons !== image.sdf) {
+-                    console.warn('Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer');
+-                }
+-                if (image.pixelRatio !== 1) {
+-                    this.iconsNeedLinear = true;
+-                }
+-            }
+-        } else {
+-            shapedIcon = null;
+-        }
++    var u = (d + 1) % 3
++    var v = (d + 2) % 3
+ 
+-        if (shapedText || shapedIcon) {
+-            this.addFeature(geometries[k], shapedText, shapedIcon, features[k].index);
+-        }
+-    }
++    var f = this._field[d]
++    var g = this._field[u]
++    var h = this._field[v]
++    var intensity = this.intensity
+ 
+-    this.placeFeatures(collisionTile, this.showCollisionBoxes);
++    var graph = surfaceNets(f, levels[d])
++    var edges = graph.cells
++    var positions = graph.positions
+ 
+-    this.trimArrays();
+-};
++    this._dynamicOffsets[d] = vertexCount
+ 
+-SymbolBucket.prototype.addFeature = function(lines, shapedText, shapedIcon, featureIndex) {
+-    var layout = this.layer.layout;
++    for (i = 0; i < edges.length; ++i) {
++      var e = edges[i]
++      for (var j = 0; j < 2; ++j) {
++        var p = positions[e[j]]
+ 
+-    var glyphSize = 24;
++        var x = +p[0]
++        var ix = x | 0
++        var jx = Math.min(ix + 1, shape[0]) | 0
++        var fx = x - ix
++        var hx = 1.0 - fx
+ 
+-    var fontScale = this.adjustedTextSize / glyphSize,
+-        textMaxSize = this.adjustedTextMaxSize !== undefined ? this.adjustedTextMaxSize : this.adjustedTextSize,
+-        textBoxScale = this.tilePixelRatio * fontScale,
+-        textMaxBoxScale = this.tilePixelRatio * textMaxSize / glyphSize,
+-        iconBoxScale = this.tilePixelRatio * this.adjustedIconSize,
+-        symbolMinDistance = this.tilePixelRatio * layout['symbol-spacing'],
+-        avoidEdges = layout['symbol-avoid-edges'],
+-        textPadding = layout['text-padding'] * this.tilePixelRatio,
+-        iconPadding = layout['icon-padding'] * this.tilePixelRatio,
+-        textMaxAngle = layout['text-max-angle'] / 180 * Math.PI,
+-        textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
+-        iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
+-        mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
+-            layout['text-ignore-placement'] || layout['icon-ignore-placement'],
+-        isLine = layout['symbol-placement'] === 'line',
+-        textRepeatDistance = symbolMinDistance / 2;
++        var y = +p[1]
++        var iy = y | 0
++        var jy = Math.min(iy + 1, shape[1]) | 0
++        var fy = y - iy
++        var hy = 1.0 - fy
+ 
+-    if (isLine) {
+-        lines = clipLine(lines, 0, 0, EXTENT, EXTENT);
+-    }
++        var w00 = hx * hy
++        var w01 = hx * fy
++        var w10 = fx * hy
++        var w11 = fx * fy
+ 
+-    for (var i = 0; i < lines.length; i++) {
+-        var line = lines[i];
++        var cu = w00 * g.get(ix, iy) +
++          w01 * g.get(ix, jy) +
++          w10 * g.get(jx, iy) +
++          w11 * g.get(jx, jy)
+ 
+-        // Calculate the anchor points around which you want to place labels
+-        var anchors;
+-        if (isLine) {
+-            anchors = getAnchors(
+-                line,
+-                symbolMinDistance,
+-                textMaxAngle,
+-                shapedText,
+-                shapedIcon,
+-                glyphSize,
+-                textMaxBoxScale,
+-                this.overscaling,
+-                EXTENT
+-            );
+-        } else {
+-            anchors = [ new Anchor(line[0].x, line[0].y, 0) ];
++        var cv = w00 * h.get(ix, iy) +
++          w01 * h.get(ix, jy) +
++          w10 * h.get(jx, iy) +
++          w11 * h.get(jx, jy)
++
++        if (isNaN(cu) || isNaN(cv)) {
++          if (j) {
++            vertexCount -= 1
++          }
++          break
+         }
+ 
+-        // For each potential label, create the placement features used to check for collisions, and the quads use for rendering.
+-        for (var j = 0, len = anchors.length; j < len; j++) {
+-            var anchor = anchors[j];
++        scratchBuffer[2 * vertexCount + 0] = cu
++        scratchBuffer[2 * vertexCount + 1] = cv
+ 
+-            if (shapedText && isLine) {
+-                if (this.anchorIsTooClose(shapedText.text, textRepeatDistance, anchor)) {
+-                    continue;
+-                }
+-            }
++        vertexCount += 1
++      }
++    }
+ 
+-            var inside = !(anchor.x < 0 || anchor.x > EXTENT || anchor.y < 0 || anchor.y > EXTENT);
++    this._dynamicCounts[d] = vertexCount - this._dynamicOffsets[d]
++  }
+ 
+-            if (avoidEdges && !inside) continue;
++  this._dynamicBuffer.update(scratchBuffer.subarray(0, 2 * vertexCount))
++  pool.freeFloat(scratchBuffer)
++}
+ 
+-            // Normally symbol layers are drawn across tile boundaries. Only symbols
+-            // with their anchors within the tile boundaries are added to the buffers
+-            // to prevent symbols from being drawn twice.
+-            //
+-            // Symbols in layers with overlap are sorted in the y direction so that
+-            // symbols lower on the canvas are drawn on top of symbols near the top.
+-            // To preserve this order across tile boundaries these symbols can't
+-            // be drawn across tile boundaries. Instead they need to be included in
+-            // the buffers for both tiles and clipped to tile boundaries at draw time.
+-            var addToBuffers = inside || mayOverlap;
++function createSurfacePlot (params) {
++  var gl = params.gl
++  var shader = createShader(gl)
++  var pickShader = createPickShader(gl)
++  var contourShader = createContourShader(gl)
++  var contourPickShader = createPickContourShader(gl)
+ 
+-            this.symbolInstances.push(new SymbolInstance(anchor, line, shapedText, shapedIcon, layout,
+-                        addToBuffers, this.symbolInstances.length, this.collisionBoxArray, featureIndex, this.sourceLayerIndex, this.index,
+-                        textBoxScale, textPadding, textAlongLine,
+-                        iconBoxScale, iconPadding, iconAlongLine));
+-        }
++  var coordinateBuffer = createBuffer(gl)
++  var vao = createVAO(gl, [
++    { buffer: coordinateBuffer,
++      size: 4,
++      stride: SURFACE_VERTEX_SIZE,
++      offset: 0
++    },
++    { buffer: coordinateBuffer,
++      size: 3,
++      stride: SURFACE_VERTEX_SIZE,
++      offset: 16
++    },
++    {
++      buffer: coordinateBuffer,
++      size: 3,
++      stride: SURFACE_VERTEX_SIZE,
++      offset: 28
+     }
+-};
++  ])
+ 
+-SymbolBucket.prototype.anchorIsTooClose = function(text, repeatDistance, anchor) {
+-    var compareText = this.compareText;
+-    if (!(text in compareText)) {
+-        compareText[text] = [];
+-    } else {
+-        var otherAnchors = compareText[text];
+-        for (var k = otherAnchors.length - 1; k >= 0; k--) {
+-            if (anchor.dist(otherAnchors[k]) < repeatDistance) {
+-                // If it's within repeatDistance of one anchor, stop looking
+-                return true;
+-            }
+-        }
++  var contourBuffer = createBuffer(gl)
++  var contourVAO = createVAO(gl, [
++    {
++      buffer: contourBuffer,
++      size: 4,
++      stride: 20,
++      offset: 0
++    },
++    {
++      buffer: contourBuffer,
++      size: 1,
++      stride: 20,
++      offset: 16
+     }
+-    // If anchor is not within repeatDistance of any other anchor, add to array
+-    compareText[text].push(anchor);
+-    return false;
+-};
++  ])
+ 
+-SymbolBucket.prototype.placeFeatures = function(collisionTile, showCollisionBoxes) {
+-    this.recalculateStyleLayers();
++  var dynamicBuffer = createBuffer(gl)
++  var dynamicVAO = createVAO(gl, [
++    {
++      buffer: dynamicBuffer,
++      size: 2,
++      type: gl.FLOAT
++    }])
+ 
+-    // Calculate which labels can be shown and when they can be shown and
+-    // create the bufers used for rendering.
++  var cmap = createTexture(gl, 1, N_COLORS, gl.RGBA, gl.UNSIGNED_BYTE)
++  cmap.minFilter = gl.LINEAR
++  cmap.magFilter = gl.LINEAR
+ 
+-    this.createArrays();
++  var surface = new SurfacePlot(
++    gl,
++    [0, 0],
++    [[0, 0, 0], [0, 0, 0]],
++    shader,
++    pickShader,
++    coordinateBuffer,
++    vao,
++    cmap,
++    contourShader,
++    contourPickShader,
++    contourBuffer,
++    contourVAO,
++    dynamicBuffer,
++    dynamicVAO)
+ 
+-    var layout = this.layer.layout;
++  var nparams = {
++    levels: [[], [], []]
++  }
++  for (var id in params) {
++    nparams[id] = params[id]
++  }
++  nparams.colormap = nparams.colormap || 'jet'
+ 
+-    var maxScale = collisionTile.maxScale;
++  surface.update(nparams)
+ 
+-    var textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
+-    var iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
++  return surface
++}
+ 
+-    var mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
+-        layout['text-ignore-placement'] || layout['icon-ignore-placement'];
++},{"./lib/shaders":200,"binary-search-bounds":48,"bit-twiddle":49,"colormap":75,"gl-buffer":121,"gl-mat4/invert":142,"gl-mat4/multiply":144,"gl-texture2d":202,"gl-vao":206,"ndarray":385,"ndarray-gradient":376,"ndarray-ops":379,"ndarray-pack":380,"surface-nets":440,"typedarray-pool":449}],202:[function(require,module,exports){
++'use strict'
+ 
+-    // Sort symbols by their y position on the canvas so that they lower symbols
+-    // are drawn on top of higher symbols.
+-    // Don't sort symbols that won't overlap because it isn't necessary and
+-    // because it causes more labels to pop in and out when rotating.
+-    if (mayOverlap) {
+-        var angle = collisionTile.angle;
+-        var sin = Math.sin(angle),
+-            cos = Math.cos(angle);
++var ndarray = require('ndarray')
++var ops     = require('ndarray-ops')
++var pool    = require('typedarray-pool')
+ 
+-        this.symbolInstances.sort(function(a, b) {
+-            var aRotated = (sin * a.x + cos * a.y) | 0;
+-            var bRotated = (sin * b.x + cos * b.y) | 0;
+-            return (aRotated - bRotated) || (b.index - a.index);
+-        });
+-    }
++module.exports = createTexture2D
+ 
+-    for (var p = 0; p < this.symbolInstances.length; p++) {
+-        var symbolInstance = this.symbolInstances[p];
+-        var hasText = symbolInstance.hasText;
+-        var hasIcon = symbolInstance.hasIcon;
++var linearTypes = null
++var filterTypes = null
++var wrapTypes   = null
+ 
+-        var iconWithoutText = layout['text-optional'] || !hasText,
+-            textWithoutIcon = layout['icon-optional'] || !hasIcon;
++function lazyInitLinearTypes(gl) {
++  linearTypes = [
++    gl.LINEAR,
++    gl.NEAREST_MIPMAP_LINEAR,
++    gl.LINEAR_MIPMAP_NEAREST,
++    gl.LINEAR_MIPMAP_NEAREST
++  ]
++  filterTypes = [
++    gl.NEAREST,
++    gl.LINEAR,
++    gl.NEAREST_MIPMAP_NEAREST,
++    gl.NEAREST_MIPMAP_LINEAR,
++    gl.LINEAR_MIPMAP_NEAREST,
++    gl.LINEAR_MIPMAP_LINEAR
++  ]
++  wrapTypes = [
++    gl.REPEAT,
++    gl.CLAMP_TO_EDGE,
++    gl.MIRRORED_REPEAT
++  ]
++}
+ 
++var convertFloatToUint8 = function(out, inp) {
++  ops.muls(out, inp, 255.0)
++}
+ 
+-        // Calculate the scales at which the text and icon can be placed without collision.
++function reshapeTexture(tex, w, h) {
++  var gl = tex.gl
++  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(w < 0 || w > maxSize || h < 0 || h > maxSize) {
++    throw new Error('gl-texture2d: Invalid texture size')
++  }
++  tex._shape = [w, h]
++  tex.bind()
++  gl.texImage2D(gl.TEXTURE_2D, 0, tex.format, w, h, 0, tex.format, tex.type, null)
++  tex._mipLevels = [0]
++  return tex
++}
+ 
+-        var glyphScale = hasText ?
+-            collisionTile.placeCollisionFeature(symbolInstance.textCollisionFeature,
+-                    layout['text-allow-overlap'], layout['symbol-avoid-edges']) :
+-            collisionTile.minScale;
++function Texture2D(gl, handle, width, height, format, type) {
++  this.gl = gl
++  this.handle = handle
++  this.format = format
++  this.type = type
++  this._shape = [width, height]
++  this._mipLevels = [0]
++  this._magFilter = gl.NEAREST
++  this._minFilter = gl.NEAREST
++  this._wrapS = gl.CLAMP_TO_EDGE
++  this._wrapT = gl.CLAMP_TO_EDGE
++  this._anisoSamples = 1
+ 
+-        var iconScale = hasIcon ?
+-            collisionTile.placeCollisionFeature(symbolInstance.iconCollisionFeature,
+-                    layout['icon-allow-overlap'], layout['symbol-avoid-edges']) :
+-            collisionTile.minScale;
++  var parent = this
++  var wrapVector = [this._wrapS, this._wrapT]
++  Object.defineProperties(wrapVector, [
++    {
++      get: function() {
++        return parent._wrapS
++      },
++      set: function(v) {
++        return parent.wrapS = v
++      }
++    },
++    {
++      get: function() {
++        return parent._wrapT
++      },
++      set: function(v) {
++        return parent.wrapT = v
++      }
++    }
++  ])
++  this._wrapVector = wrapVector
++
++  var shapeVector = [this._shape[0], this._shape[1]]
++  Object.defineProperties(shapeVector, [
++    {
++      get: function() {
++        return parent._shape[0]
++      },
++      set: function(v) {
++        return parent.width = v
++      }
++    },
++    {
++      get: function() {
++        return parent._shape[1]
++      },
++      set: function(v) {
++        return parent.height = v
++      }
++    }
++  ])
++  this._shapeVector = shapeVector
++}
++
++var proto = Texture2D.prototype
+ 
++Object.defineProperties(proto, {
++  minFilter: {
++    get: function() {
++      return this._minFilter
++    },
++    set: function(v) {
++      this.bind()
++      var gl = this.gl
++      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
++        if(!gl.getExtension('OES_texture_float_linear')) {
++          v = gl.NEAREST
++        }
++      }
++      if(filterTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown filter mode ' + v)
++      }
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, v)
++      return this._minFilter = v
++    }
++  },
++  magFilter: {
++    get: function() {
++      return this._magFilter
++    },
++    set: function(v) {
++      this.bind()
++      var gl = this.gl
++      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
++        if(!gl.getExtension('OES_texture_float_linear')) {
++          v = gl.NEAREST
++        }
++      }
++      if(filterTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown filter mode ' + v)
++      }
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, v)
++      return this._magFilter = v
++    }
++  },
++  mipSamples: {
++    get: function() {
++      return this._anisoSamples
++    },
++    set: function(i) {
++      var psamples = this._anisoSamples
++      this._anisoSamples = Math.max(i, 1)|0
++      if(psamples !== this._anisoSamples) {
++        var ext = this.gl.getExtension('EXT_texture_filter_anisotropic')
++        if(ext) {
++          this.gl.texParameterf(this.gl.TEXTURE_2D, ext.TEXTURE_MAX_ANISOTROPY_EXT, this._anisoSamples)
++        }
++      }
++      return this._anisoSamples
++    }
++  },
++  wrapS: {
++    get: function() {
++      return this._wrapS
++    },
++    set: function(v) {
++      this.bind()
++      if(wrapTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++      }
++      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_S, v)
++      return this._wrapS = v
++    }
++  },
++  wrapT: {
++    get: function() {
++      return this._wrapT
++    },
++    set: function(v) {
++      this.bind()
++      if(wrapTypes.indexOf(v) < 0) {
++        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++      }
++      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_T, v)
++      return this._wrapT = v
++    }
++  },
++  wrap: {
++    get: function() {
++      return this._wrapVector
++    },
++    set: function(v) {
++      if(!Array.isArray(v)) {
++        v = [v,v]
++      }
++      if(v.length !== 2) {
++        throw new Error('gl-texture2d: Must specify wrap mode for rows and columns')
++      }
++      for(var i=0; i<2; ++i) {
++        if(wrapTypes.indexOf(v[i]) < 0) {
++          throw new Error('gl-texture2d: Unknown wrap mode ' + v)
++        }
++      }
++      this._wrapS = v[0]
++      this._wrapT = v[1]
+ 
+-        // Combine the scales for icons and text.
++      var gl = this.gl
++      this.bind()
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, this._wrapS)
++      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, this._wrapT)
+ 
+-        if (!iconWithoutText && !textWithoutIcon) {
+-            iconScale = glyphScale = Math.max(iconScale, glyphScale);
+-        } else if (!textWithoutIcon && glyphScale) {
+-            glyphScale = Math.max(iconScale, glyphScale);
+-        } else if (!iconWithoutText && iconScale) {
+-            iconScale = Math.max(iconScale, glyphScale);
++      return v
++    }
++  },
++  shape: {
++    get: function() {
++      return this._shapeVector
++    },
++    set: function(x) {
++      if(!Array.isArray(x)) {
++        x = [x|0,x|0]
++      } else {
++        if(x.length !== 2) {
++          throw new Error('gl-texture2d: Invalid texture shape')
+         }
++      }
++      reshapeTexture(this, x[0]|0, x[1]|0)
++      return [x[0]|0, x[1]|0]
++    }
++  },
++  width: {
++    get: function() {
++      return this._shape[0]
++    },
++    set: function(w) {
++      w = w|0
++      reshapeTexture(this, w, this._shape[1])
++      return w
++    }
++  },
++  height: {
++    get: function() {
++      return this._shape[1]
++    },
++    set: function(h) {
++      h = h|0
++      reshapeTexture(this, this._shape[0], h)
++      return h
++    }
++  }
++})
+ 
++proto.bind = function(unit) {
++  var gl = this.gl
++  if(unit !== undefined) {
++    gl.activeTexture(gl.TEXTURE0 + (unit|0))
++  }
++  gl.bindTexture(gl.TEXTURE_2D, this.handle)
++  if(unit !== undefined) {
++    return (unit|0)
++  }
++  return gl.getParameter(gl.ACTIVE_TEXTURE) - gl.TEXTURE0
++}
+ 
+-        // Insert final placement into collision tree and add glyphs/icons to buffers
+-
+-        if (hasText) {
+-            collisionTile.insertCollisionFeature(symbolInstance.textCollisionFeature, glyphScale, layout['text-ignore-placement']);
+-            if (glyphScale <= maxScale) {
+-                this.addSymbols('glyph', symbolInstance.glyphQuads, glyphScale, layout['text-keep-upright'], textAlongLine, collisionTile.angle);
+-            }
+-        }
++proto.dispose = function() {
++  this.gl.deleteTexture(this.handle)
++}
+ 
+-        if (hasIcon) {
+-            collisionTile.insertCollisionFeature(symbolInstance.iconCollisionFeature, iconScale, layout['icon-ignore-placement']);
+-            if (iconScale <= maxScale) {
+-                this.addSymbols('icon', symbolInstance.iconQuads, iconScale, layout['icon-keep-upright'], iconAlongLine, collisionTile.angle);
+-            }
+-        }
++proto.generateMipmap = function() {
++  this.bind()
++  this.gl.generateMipmap(this.gl.TEXTURE_2D)
+ 
++  //Update mip levels
++  var l = Math.min(this._shape[0], this._shape[1])
++  for(var i=0; l>0; ++i, l>>>=1) {
++    if(this._mipLevels.indexOf(i) < 0) {
++      this._mipLevels.push(i)
+     }
++  }
++}
+ 
+-    if (showCollisionBoxes) this.addToDebugBuffers(collisionTile);
+-};
++proto.setPixels = function(data, x_off, y_off, mip_level) {
++  var gl = this.gl
++  this.bind()
++  if(Array.isArray(x_off)) {
++    mip_level = y_off
++    y_off = x_off[1]|0
++    x_off = x_off[0]|0
++  } else {
++    x_off = x_off || 0
++    y_off = y_off || 0
++  }
++  mip_level = mip_level || 0
++  if(data instanceof HTMLCanvasElement ||
++     data instanceof ImageData ||
++     data instanceof HTMLImageElement ||
++     data instanceof HTMLVideoElement) {
++    var needsMip = this._mipLevels.indexOf(mip_level) < 0
++    if(needsMip) {
++      gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, this.type, data)
++      this._mipLevels.push(mip_level)
++    } else {
++      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, this.format, this.type, data)
++    }
++  } else if(data.shape && data.stride && data.data) {
++    if(data.shape.length < 2 ||
++       x_off + data.shape[1] > this._shape[1]>>>mip_level ||
++       y_off + data.shape[0] > this._shape[0]>>>mip_level ||
++       x_off < 0 ||
++       y_off < 0) {
++      throw new Error('gl-texture2d: Texture dimensions are out of bounds')
++    }
++    texSubImageArray(gl, x_off, y_off, mip_level, this.format, this.type, this._mipLevels, data)
++  } else {
++    throw new Error('gl-texture2d: Unsupported data type')
++  }
++}
+ 
+-SymbolBucket.prototype.addSymbols = function(programName, quads, scale, keepUpright, alongLine, placementAngle) {
+ 
+-    var group = this.makeRoomFor(programName, 4 * quads.length);
++function isPacked(shape, stride) {
++  if(shape.length === 3) {
++    return  (stride[2] === 1) &&
++            (stride[1] === shape[0]*shape[2]) &&
++            (stride[0] === shape[2])
++  }
++  return  (stride[0] === 1) &&
++          (stride[1] === shape[0])
++}
+ 
+-    var elementArray = group.layout.element;
+-    var vertexArray = group.layout.vertex;
++function texSubImageArray(gl, x_off, y_off, mip_level, cformat, ctype, mipLevels, array) {
++  var dtype = array.dtype
++  var shape = array.shape.slice()
++  if(shape.length < 2 || shape.length > 3) {
++    throw new Error('gl-texture2d: Invalid ndarray, must be 2d or 3d')
++  }
++  var type = 0, format = 0
++  var packed = isPacked(shape, array.stride.slice())
++  if(dtype === 'float32') {
++    type = gl.FLOAT
++  } else if(dtype === 'float64') {
++    type = gl.FLOAT
++    packed = false
++    dtype = 'float32'
++  } else if(dtype === 'uint8') {
++    type = gl.UNSIGNED_BYTE
++  } else {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++    dtype = 'uint8'
++  }
++  var channels = 1
++  if(shape.length === 2) {
++    format = gl.LUMINANCE
++    shape = [shape[0], shape[1], 1]
++    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
++  } else if(shape.length === 3) {
++    if(shape[2] === 1) {
++      format = gl.ALPHA
++    } else if(shape[2] === 2) {
++      format = gl.LUMINANCE_ALPHA
++    } else if(shape[2] === 3) {
++      format = gl.RGB
++    } else if(shape[2] === 4) {
++      format = gl.RGBA
++    } else {
++      throw new Error('gl-texture2d: Invalid shape for pixel coords')
++    }
++    channels = shape[2]
++  } else {
++    throw new Error('gl-texture2d: Invalid shape for texture')
++  }
++  //For 1-channel textures allow conversion between formats
++  if((format  === gl.LUMINANCE || format  === gl.ALPHA) &&
++     (cformat === gl.LUMINANCE || cformat === gl.ALPHA)) {
++    format = cformat
++  }
++  if(format !== cformat) {
++    throw new Error('gl-texture2d: Incompatible texture format for setPixels')
++  }
++  var size = array.size
++  var needsMip = mipLevels.indexOf(mip_level) < 0
++  if(needsMip) {
++    mipLevels.push(mip_level)
++  }
++  if(type === ctype && packed) {
++    //Array data types are compatible, can directly copy into texture
++    if(array.offset === 0 && array.data.length === size) {
++      if(needsMip) {
++        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data)
++      } else {
++        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data)
++      }
++    } else {
++      if(needsMip) {
++        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data.subarray(array.offset, array.offset+size))
++      } else {
++        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data.subarray(array.offset, array.offset+size))
++      }
++    }
++  } else {
++    //Need to do type conversion to pack data into buffer
++    var pack_buffer
++    if(ctype === gl.FLOAT) {
++      pack_buffer = pool.mallocFloat32(size)
++    } else {
++      pack_buffer = pool.mallocUint8(size)
++    }
++    var pack_view = ndarray(pack_buffer, shape, [shape[2], shape[2]*shape[0], 1])
++    if(type === gl.FLOAT && ctype === gl.UNSIGNED_BYTE) {
++      convertFloatToUint8(pack_view, array)
++    } else {
++      ops.assign(pack_view, array)
++    }
++    if(needsMip) {
++      gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, pack_buffer.subarray(0, size))
++    } else {
++      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, pack_buffer.subarray(0, size))
++    }
++    if(ctype === gl.FLOAT) {
++      pool.freeFloat32(pack_buffer)
++    } else {
++      pool.freeUint8(pack_buffer)
++    }
++  }
++}
+ 
+-    var zoom = this.zoom;
+-    var placementZoom = Math.max(Math.log(scale) / Math.LN2 + zoom, 0);
++function initTexture(gl) {
++  var tex = gl.createTexture()
++  gl.bindTexture(gl.TEXTURE_2D, tex)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
++  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
++  return tex
++}
+ 
+-    for (var k = 0; k < quads.length; k++) {
++function createTextureShape(gl, width, height, format, type) {
++  var maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(width < 0 || width > maxTextureSize || height < 0 || height  > maxTextureSize) {
++    throw new Error('gl-texture2d: Invalid texture shape')
++  }
++  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
++    throw new Error('gl-texture2d: Floating point textures not supported on this platform')
++  }
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, format, type, null)
++  return new Texture2D(gl, tex, width, height, format, type)
++}
+ 
+-        var symbol = quads[k],
+-            angle = symbol.angle;
++function createTextureDOM(gl, element, format, type) {
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, format, type, element)
++  return new Texture2D(gl, tex, element.width|0, element.height|0, format, type)
++}
+ 
+-        // drop upside down versions of glyphs
+-        var a = (angle + placementAngle + Math.PI) % (Math.PI * 2);
+-        if (keepUpright && alongLine && (a <= Math.PI / 2 || a > Math.PI * 3 / 2)) continue;
++//Creates a texture from an ndarray
++function createTextureArray(gl, array) {
++  var dtype = array.dtype
++  var shape = array.shape.slice()
++  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
++  if(shape[0] < 0 || shape[0] > maxSize || shape[1] < 0 || shape[1] > maxSize) {
++    throw new Error('gl-texture2d: Invalid texture size')
++  }
++  var packed = isPacked(shape, array.stride.slice())
++  var type = 0
++  if(dtype === 'float32') {
++    type = gl.FLOAT
++  } else if(dtype === 'float64') {
++    type = gl.FLOAT
++    packed = false
++    dtype = 'float32'
++  } else if(dtype === 'uint8') {
++    type = gl.UNSIGNED_BYTE
++  } else {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++    dtype = 'uint8'
++  }
++  var format = 0
++  if(shape.length === 2) {
++    format = gl.LUMINANCE
++    shape = [shape[0], shape[1], 1]
++    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
++  } else if(shape.length === 3) {
++    if(shape[2] === 1) {
++      format = gl.ALPHA
++    } else if(shape[2] === 2) {
++      format = gl.LUMINANCE_ALPHA
++    } else if(shape[2] === 3) {
++      format = gl.RGB
++    } else if(shape[2] === 4) {
++      format = gl.RGBA
++    } else {
++      throw new Error('gl-texture2d: Invalid shape for pixel coords')
++    }
++  } else {
++    throw new Error('gl-texture2d: Invalid shape for texture')
++  }
++  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
++    type = gl.UNSIGNED_BYTE
++    packed = false
++  }
++  var buffer, buf_store
++  var size = array.size
++  if(!packed) {
++    var stride = [shape[2], shape[2]*shape[0], 1]
++    buf_store = pool.malloc(size, dtype)
++    var buf_array = ndarray(buf_store, shape, stride, 0)
++    if((dtype === 'float32' || dtype === 'float64') && type === gl.UNSIGNED_BYTE) {
++      convertFloatToUint8(buf_array, array)
++    } else {
++      ops.assign(buf_array, array)
++    }
++    buffer = buf_store.subarray(0, size)
++  } else if (array.offset === 0 && array.data.length === size) {
++    buffer = array.data
++  } else {
++    buffer = array.data.subarray(array.offset, array.offset + size)
++  }
++  var tex = initTexture(gl)
++  gl.texImage2D(gl.TEXTURE_2D, 0, format, shape[0], shape[1], 0, format, type, buffer)
++  if(!packed) {
++    pool.free(buf_store)
++  }
++  return new Texture2D(gl, tex, shape[0], shape[1], format, type)
++}
+ 
+-        var tl = symbol.tl,
+-            tr = symbol.tr,
+-            bl = symbol.bl,
+-            br = symbol.br,
+-            tex = symbol.tex,
+-            anchorPoint = symbol.anchorPoint,
++function createTexture2D(gl) {
++  if(arguments.length <= 1) {
++    throw new Error('gl-texture2d: Missing arguments for texture2d constructor')
++  }
++  if(!linearTypes) {
++    lazyInitLinearTypes(gl)
++  }
++  if(typeof arguments[1] === 'number') {
++    return createTextureShape(gl, arguments[1], arguments[2], arguments[3]||gl.RGBA, arguments[4]||gl.UNSIGNED_BYTE)
++  }
++  if(Array.isArray(arguments[1])) {
++    return createTextureShape(gl, arguments[1][0]|0, arguments[1][1]|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
++  }
++  if(typeof arguments[1] === 'object') {
++    var obj = arguments[1]
++    if(obj instanceof HTMLCanvasElement ||
++       obj instanceof HTMLImageElement ||
++       obj instanceof HTMLVideoElement ||
++       obj instanceof ImageData) {
++      return createTextureDOM(gl, obj, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
++    } else if(obj.shape && obj.data && obj.stride) {
++      return createTextureArray(gl, obj)
++    }
++  }
++  throw new Error('gl-texture2d: Invalid arguments for texture2d constructor')
++}
+ 
+-            minZoom = Math.max(zoom + Math.log(symbol.minScale) / Math.LN2, placementZoom),
+-            maxZoom = Math.min(zoom + Math.log(symbol.maxScale) / Math.LN2, 25);
++},{"ndarray":385,"ndarray-ops":379,"typedarray-pool":449}],203:[function(require,module,exports){
++"use strict"
+ 
+-        if (maxZoom <= minZoom) continue;
++function doBind(gl, elements, attributes) {
++  if(elements) {
++    elements.bind()
++  } else {
++    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null)
++  }
++  var nattribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS)|0
++  if(attributes) {
++    if(attributes.length > nattribs) {
++      throw new Error("gl-vao: Too many vertex attributes")
++    }
++    for(var i=0; i<attributes.length; ++i) {
++      var attrib = attributes[i]
++      if(attrib.buffer) {
++        var buffer = attrib.buffer
++        var size = attrib.size || 4
++        var type = attrib.type || gl.FLOAT
++        var normalized = !!attrib.normalized
++        var stride = attrib.stride || 0
++        var offset = attrib.offset || 0
++        buffer.bind()
++        gl.enableVertexAttribArray(i)
++        gl.vertexAttribPointer(i, size, type, normalized, stride, offset)
++      } else {
++        if(typeof attrib === "number") {
++          gl.vertexAttrib1f(i, attrib)
++        } else if(attrib.length === 1) {
++          gl.vertexAttrib1f(i, attrib[0])
++        } else if(attrib.length === 2) {
++          gl.vertexAttrib2f(i, attrib[0], attrib[1])
++        } else if(attrib.length === 3) {
++          gl.vertexAttrib3f(i, attrib[0], attrib[1], attrib[2])
++        } else if(attrib.length === 4) {
++          gl.vertexAttrib4f(i, attrib[0], attrib[1], attrib[2], attrib[3])
++        } else {
++          throw new Error("gl-vao: Invalid vertex attribute")
++        }
++        gl.disableVertexAttribArray(i)
++      }
++    }
++    for(; i<nattribs; ++i) {
++      gl.disableVertexAttribArray(i)
++    }
++  } else {
++    gl.bindBuffer(gl.ARRAY_BUFFER, null)
++    for(var i=0; i<nattribs; ++i) {
++      gl.disableVertexAttribArray(i)
++    }
++  }
++}
+ 
+-        // Lower min zoom so that while fading out the label it can be shown outside of collision-free zoom levels
+-        if (minZoom === placementZoom) minZoom = 0;
++module.exports = doBind
++},{}],204:[function(require,module,exports){
++"use strict"
+ 
+-        var index = addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tl.x, tl.y, tex.x, tex.y, minZoom, maxZoom, placementZoom);
+-        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tr.x, tr.y, tex.x + tex.w, tex.y, minZoom, maxZoom, placementZoom);
+-        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, bl.x, bl.y, tex.x, tex.y + tex.h, minZoom, maxZoom, placementZoom);
+-        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, br.x, br.y, tex.x + tex.w, tex.y + tex.h, minZoom, maxZoom, placementZoom);
++var bindAttribs = require("./do-bind.js")
+ 
+-        elementArray.emplaceBack(index, index + 1, index + 2);
+-        elementArray.emplaceBack(index + 1, index + 2, index + 3);
+-    }
++function VAOEmulated(gl) {
++  this.gl = gl
++  this._elements = null
++  this._attributes = null
++  this._elementsType = gl.UNSIGNED_SHORT
++}
+ 
+-};
++VAOEmulated.prototype.bind = function() {
++  bindAttribs(this.gl, this._elements, this._attributes)
++}
+ 
+-SymbolBucket.prototype.updateIcons = function(icons) {
+-    this.recalculateStyleLayers();
+-    var iconValue = this.layer.layout['icon-image'];
+-    if (!iconValue) return;
++VAOEmulated.prototype.update = function(attributes, elements, elementsType) {
++  this._elements = elements
++  this._attributes = attributes
++  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
++}
+ 
+-    for (var i = 0; i < this.features.length; i++) {
+-        var iconName = resolveTokens(this.features[i].properties, iconValue);
+-        if (iconName)
+-            icons[iconName] = true;
+-    }
+-};
++VAOEmulated.prototype.dispose = function() { }
++VAOEmulated.prototype.unbind = function() { }
+ 
+-SymbolBucket.prototype.updateFont = function(stacks) {
+-    this.recalculateStyleLayers();
+-    var fontName = this.layer.layout['text-font'],
+-        stack = stacks[fontName] = stacks[fontName] || {};
++VAOEmulated.prototype.draw = function(mode, count, offset) {
++  offset = offset || 0
++  var gl = this.gl
++  if(this._elements) {
++    gl.drawElements(mode, count, this._elementsType, offset)
++  } else {
++    gl.drawArrays(mode, offset, count)
++  }
++}
+ 
+-    this.textFeatures = resolveText(this.features, this.layer.layout, stack);
+-};
++function createVAOEmulated(gl) {
++  return new VAOEmulated(gl)
++}
+ 
+-SymbolBucket.prototype.addToDebugBuffers = function(collisionTile) {
+-    var group = this.makeRoomFor('collisionBox', 0);
+-    var vertexArray = group.layout.vertex;
+-    var angle = -collisionTile.angle;
+-    var yStretch = collisionTile.yStretch;
++module.exports = createVAOEmulated
++},{"./do-bind.js":203}],205:[function(require,module,exports){
++"use strict"
+ 
+-    for (var j = 0; j < this.symbolInstances.length; j++) {
+-        for (var i = 0; i < 2; i++) {
+-            var feature = this.symbolInstances[j][i === 0 ? 'textCollisionFeature' : 'iconCollisionFeature'];
+-            if (!feature) continue;
++var bindAttribs = require("./do-bind.js")
+ 
+-            for (var b = feature.boxStartIndex; b < feature.boxEndIndex; b++) {
+-                var box = this.collisionBoxArray.get(b);
+-                var anchorPoint = box.anchorPoint;
++function VertexAttribute(location, dimension, a, b, c, d) {
++  this.location = location
++  this.dimension = dimension
++  this.a = a
++  this.b = b
++  this.c = c
++  this.d = d
++}
+ 
+-                var tl = new Point(box.x1, box.y1 * yStretch)._rotate(angle);
+-                var tr = new Point(box.x2, box.y1 * yStretch)._rotate(angle);
+-                var bl = new Point(box.x1, box.y2 * yStretch)._rotate(angle);
+-                var br = new Point(box.x2, box.y2 * yStretch)._rotate(angle);
++VertexAttribute.prototype.bind = function(gl) {
++  switch(this.dimension) {
++    case 1:
++      gl.vertexAttrib1f(this.location, this.a)
++    break
++    case 2:
++      gl.vertexAttrib2f(this.location, this.a, this.b)
++    break
++    case 3:
++      gl.vertexAttrib3f(this.location, this.a, this.b, this.c)
++    break
++    case 4:
++      gl.vertexAttrib4f(this.location, this.a, this.b, this.c, this.d)
++    break
++  }
++}
+ 
+-                var maxZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.maxScale) / Math.LN2));
+-                var placementZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.placementScale) / Math.LN2));
++function VAONative(gl, ext, handle) {
++  this.gl = gl
++  this._ext = ext
++  this.handle = handle
++  this._attribs = []
++  this._useElements = false
++  this._elementsType = gl.UNSIGNED_SHORT
++}
+ 
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
+-                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
+-            }
+-        }
+-    }
+-};
++VAONative.prototype.bind = function() {
++  this._ext.bindVertexArrayOES(this.handle)
++  for(var i=0; i<this._attribs.length; ++i) {
++    this._attribs[i].bind(this.gl)
++  }
++}
+ 
+-function SymbolInstance(anchor, line, shapedText, shapedIcon, layout, addToBuffers, index, collisionBoxArray, featureIndex, sourceLayerIndex, bucketIndex,
+-                        textBoxScale, textPadding, textAlongLine,
+-                        iconBoxScale, iconPadding, iconAlongLine) {
++VAONative.prototype.unbind = function() {
++  this._ext.bindVertexArrayOES(null)
++}
+ 
+-    this.x = anchor.x;
+-    this.y = anchor.y;
+-    this.index = index;
+-    this.hasText = !!shapedText;
+-    this.hasIcon = !!shapedIcon;
++VAONative.prototype.dispose = function() {
++  this._ext.deleteVertexArrayOES(this.handle)
++}
+ 
+-    if (this.hasText) {
+-        this.glyphQuads = addToBuffers ? getGlyphQuads(anchor, shapedText, textBoxScale, line, layout, textAlongLine) : [];
+-        this.textCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
+-                shapedText, textBoxScale, textPadding, textAlongLine, false);
++VAONative.prototype.update = function(attributes, elements, elementsType) {
++  this.bind()
++  bindAttribs(this.gl, elements, attributes)
++  this.unbind()
++  this._attribs.length = 0
++  if(attributes)
++  for(var i=0; i<attributes.length; ++i) {
++    var a = attributes[i]
++    if(typeof a === "number") {
++      this._attribs.push(new VertexAttribute(i, 1, a))
++    } else if(Array.isArray(a)) {
++      this._attribs.push(new VertexAttribute(i, a.length, a[0], a[1], a[2], a[3]))
+     }
++  }
++  this._useElements = !!elements
++  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
++}
+ 
+-    if (this.hasIcon) {
+-        this.iconQuads = addToBuffers ? getIconQuads(anchor, shapedIcon, iconBoxScale, line, layout, iconAlongLine) : [];
+-        this.iconCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
+-                shapedIcon, iconBoxScale, iconPadding, iconAlongLine, true);
+-    }
++VAONative.prototype.draw = function(mode, count, offset) {
++  offset = offset || 0
++  var gl = this.gl
++  if(this._useElements) {
++    gl.drawElements(mode, count, this._elementsType, offset)
++  } else {
++    gl.drawArrays(mode, offset, count)
++  }
+ }
+ 
+-},{"../../symbol/anchor":303,"../../symbol/clip_line":305,"../../symbol/collision_feature":307,"../../symbol/get_anchors":309,"../../symbol/mergelines":312,"../../symbol/quads":313,"../../symbol/resolve_text":314,"../../symbol/shaping":315,"../../util/token":348,"../../util/util":349,"../bucket":247,"../load_geometry":254,"point-geometry":404}],252:[function(require,module,exports){
+-'use strict';
++function createVAONative(gl, ext) {
++  return new VAONative(gl, ext, ext.createVertexArrayOES())
++}
+ 
+-var assert = require('assert');
++module.exports = createVAONative
++},{"./do-bind.js":203}],206:[function(require,module,exports){
++"use strict"
+ 
+-module.exports = Buffer;
++var createVAONative = require("./lib/vao-native.js")
++var createVAOEmulated = require("./lib/vao-emulated.js")
+ 
+-/**
+- * The `Buffer` class turns a `StructArray` into a WebGL buffer. Each member of the StructArray's
+- * Struct type is converted to a WebGL atribute.
+- *
+- * @class Buffer
+- * @private
+- * @param {object} array A serialized StructArray.
+- * @param {object} arrayType A serialized StructArrayType.
+- * @param {BufferType} type
+- */
+-function Buffer(array, arrayType, type) {
+-    this.arrayBuffer = array.arrayBuffer;
+-    this.length = array.length;
+-    this.attributes = arrayType.members;
+-    this.itemSize = arrayType.bytesPerElement;
+-    this.type = type;
+-    this.arrayType = arrayType;
++function ExtensionShim (gl) {
++  this.bindVertexArrayOES = gl.bindVertexArray.bind(gl)
++  this.createVertexArrayOES = gl.createVertexArray.bind(gl)
++  this.deleteVertexArrayOES = gl.deleteVertexArray.bind(gl)
+ }
+ 
+-/**
+- * Bind this buffer to a WebGL context.
+- * @private
+- * @param gl The WebGL context
+- */
+-Buffer.prototype.bind = function(gl) {
+-    var type = gl[this.type];
++function createVAO(gl, attributes, elements, elementsType) {
++  var ext = gl.createVertexArray
++    ? new ExtensionShim(gl)
++    : gl.getExtension('OES_vertex_array_object')
++  var vao
+ 
+-    if (!this.buffer) {
+-        this.buffer = gl.createBuffer();
+-        gl.bindBuffer(type, this.buffer);
+-        gl.bufferData(type, this.arrayBuffer, gl.STATIC_DRAW);
++  if(ext) {
++    vao = createVAONative(gl, ext)
++  } else {
++    vao = createVAOEmulated(gl)
++  }
++  vao.update(attributes, elements, elementsType)
++  return vao
++}
+ 
+-        // dump array buffer once it's bound to gl
+-        this.arrayBuffer = null;
+-    } else {
+-        gl.bindBuffer(type, this.buffer);
+-    }
+-};
++module.exports = createVAO
+ 
+-/**
+- * @enum {string} AttributeType
+- * @private
+- * @readonly
+- */
+-var AttributeType = {
+-    Int8:   'BYTE',
+-    Uint8:  'UNSIGNED_BYTE',
+-    Int16:  'SHORT',
+-    Uint16: 'UNSIGNED_SHORT'
+-};
++},{"./lib/vao-emulated.js":204,"./lib/vao-native.js":205}],207:[function(require,module,exports){
++module.exports = cross;
+ 
+ /**
+- * Set the attribute pointers in a WebGL context
+- * @private
+- * @param gl The WebGL context
+- * @param program The active WebGL program
++ * Computes the cross product of two vec3's
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {vec3} out
+  */
+-Buffer.prototype.setVertexAttribPointers = function(gl, program) {
+-    for (var j = 0; j < this.attributes.length; j++) {
+-        var member = this.attributes[j];
+-        var attribIndex = program[member.name];
+-        assert(attribIndex !== undefined, 'array member "' + member.name + '" name does not match shader attribute name');
++function cross(out, a, b) {
++    var ax = a[0], ay = a[1], az = a[2],
++        bx = b[0], by = b[1], bz = b[2]
+ 
+-        gl.vertexAttribPointer(
+-            attribIndex,
+-            member.components,
+-            gl[AttributeType[member.type]],
+-            false,
+-            this.arrayType.bytesPerElement,
+-            member.offset
+-        );
+-    }
+-};
++    out[0] = ay * bz - az * by
++    out[1] = az * bx - ax * bz
++    out[2] = ax * by - ay * bx
++    return out
++}
++},{}],208:[function(require,module,exports){
++module.exports = dot;
+ 
+ /**
+- * Destroy the GL buffer bound to the given WebGL context
+- * @private
+- * @param gl The WebGL context
++ * Calculates the dot product of two vec3's
++ *
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @returns {Number} dot product of a and b
+  */
+-Buffer.prototype.destroy = function(gl) {
+-    if (this.buffer) {
+-        gl.deleteBuffer(this.buffer);
+-    }
+-};
++function dot(a, b) {
++    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]
++}
++},{}],209:[function(require,module,exports){
++module.exports = length;
+ 
+ /**
+- * @enum {string} BufferType
+- * @private
+- * @readonly
++ * Calculates the length of a vec3
++ *
++ * @param {vec3} a vector to calculate length of
++ * @returns {Number} length of a
+  */
+-Buffer.BufferType = {
+-    VERTEX: 'ARRAY_BUFFER',
+-    ELEMENT: 'ELEMENT_ARRAY_BUFFER'
+-};
++function length(a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2]
++    return Math.sqrt(x*x + y*y + z*z)
++}
++},{}],210:[function(require,module,exports){
++module.exports = lerp;
+ 
+ /**
+- * An `BufferType.ELEMENT` buffer holds indicies of a corresponding `BufferType.VERTEX` buffer.
+- * These indicies are stored in the `BufferType.ELEMENT` buffer as `UNSIGNED_SHORT`s.
++ * Performs a linear interpolation between two vec3's
+  *
+- * @private
+- * @readonly
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a the first operand
++ * @param {vec3} b the second operand
++ * @param {Number} t interpolation amount between the two inputs
++ * @returns {vec3} out
+  */
+-Buffer.ELEMENT_ATTRIBUTE_TYPE = 'Uint16';
++function lerp(out, a, b, t) {
++    var ax = a[0],
++        ay = a[1],
++        az = a[2]
++    out[0] = ax + t * (b[0] - ax)
++    out[1] = ay + t * (b[1] - ay)
++    out[2] = az + t * (b[2] - az)
++    return out
++}
++},{}],211:[function(require,module,exports){
++module.exports = normalize;
+ 
+ /**
+- * WebGL performs best if vertex attribute offsets are aligned to 4 byte boundaries.
+- * @private
+- * @readonly
++ * Normalize a vec3
++ *
++ * @param {vec3} out the receiving vector
++ * @param {vec3} a vector to normalize
++ * @returns {vec3} out
+  */
+-Buffer.VERTEX_ATTRIBUTE_ALIGNMENT = 4;
+-
+-},{"assert":52}],253:[function(require,module,exports){
+-'use strict';
+-
+-var Point = require('point-geometry');
+-var loadGeometry = require('./load_geometry');
+-var EXTENT = require('./bucket').EXTENT;
+-var featureFilter = require('feature-filter');
+-var StructArrayType = require('../util/struct_array');
+-var Grid = require('grid-index');
+-var DictionaryCoder = require('../util/dictionary_coder');
+-var vt = require('vector-tile');
+-var Protobuf = require('pbf');
+-var GeoJSONFeature = require('../util/vectortile_to_geojson');
+-var arraysIntersect = require('../util/util').arraysIntersect;
+-
+-var intersection = require('../util/intersection_tests');
+-var multiPolygonIntersectsBufferedMultiPoint = intersection.multiPolygonIntersectsBufferedMultiPoint;
+-var multiPolygonIntersectsMultiPolygon = intersection.multiPolygonIntersectsMultiPolygon;
+-var multiPolygonIntersectsBufferedMultiLine = intersection.multiPolygonIntersectsBufferedMultiLine;
+-
+-
+-var FeatureIndexArray = new StructArrayType({
+-    members: [
+-        // the index of the feature in the original vectortile
+-        { type: 'Uint32', name: 'featureIndex' },
+-        // the source layer the feature appears in
+-        { type: 'Uint16', name: 'sourceLayerIndex' },
+-        // the bucket the feature appears in
+-        { type: 'Uint16', name: 'bucketIndex' }
+-    ]});
+-
+-module.exports = FeatureIndex;
+-
+-function FeatureIndex(coord, overscaling, collisionTile) {
+-    if (coord.grid) {
+-        var serialized = coord;
+-        var rawTileData = overscaling;
+-        coord = serialized.coord;
+-        overscaling = serialized.overscaling;
+-        this.grid = new Grid(serialized.grid);
+-        this.featureIndexArray = new FeatureIndexArray(serialized.featureIndexArray);
+-        this.rawTileData = rawTileData;
+-        this.bucketLayerIDs = serialized.bucketLayerIDs;
+-    } else {
+-        this.grid = new Grid(EXTENT, 16, 0);
+-        this.featureIndexArray = new FeatureIndexArray();
++function normalize(out, a) {
++    var x = a[0],
++        y = a[1],
++        z = a[2]
++    var len = x*x + y*y + z*z
++    if (len > 0) {
++        //TODO: evaluate use of glm_invsqrt here?
++        len = 1 / Math.sqrt(len)
++        out[0] = a[0] * len
++        out[1] = a[1] * len
++        out[2] = a[2] * len
+     }
+-    this.coord = coord;
+-    this.overscaling = overscaling;
+-    this.x = coord.x;
+-    this.y = coord.y;
+-    this.z = coord.z - Math.log(overscaling) / Math.LN2;
+-    this.setCollisionTile(collisionTile);
++    return out
+ }
++},{}],212:[function(require,module,exports){
++module.exports = transformMat4
+ 
+-FeatureIndex.prototype.insert = function(feature, featureIndex, sourceLayerIndex, bucketIndex) {
+-    var key = this.featureIndexArray.length;
+-    this.featureIndexArray.emplaceBack(featureIndex, sourceLayerIndex, bucketIndex);
+-    var geometry = loadGeometry(feature);
+-
+-    for (var r = 0; r < geometry.length; r++) {
+-        var ring = geometry[r];
+-
+-        // TODO: skip holes when we start using vector tile spec 2.0
+-
+-        var bbox = [Infinity, Infinity, -Infinity, -Infinity];
+-        for (var i = 0; i < ring.length; i++) {
+-            var p = ring[i];
+-            bbox[0] = Math.min(bbox[0], p.x);
+-            bbox[1] = Math.min(bbox[1], p.y);
+-            bbox[2] = Math.max(bbox[2], p.x);
+-            bbox[3] = Math.max(bbox[3], p.y);
+-        }
+-
+-        this.grid.insert(key, bbox[0], bbox[1], bbox[2], bbox[3]);
+-    }
+-};
+-
+-FeatureIndex.prototype.setCollisionTile = function(collisionTile) {
+-    this.collisionTile = collisionTile;
+-};
+-
+-FeatureIndex.prototype.serialize = function() {
+-    var data = {
+-        coord: this.coord,
+-        overscaling: this.overscaling,
+-        grid: this.grid.toArrayBuffer(),
+-        featureIndexArray: this.featureIndexArray.serialize(),
+-        bucketLayerIDs: this.bucketLayerIDs
+-    };
+-    return {
+-        data: data,
+-        transferables: [data.grid, data.featureIndexArray.arrayBuffer]
+-    };
+-};
+-
+-function translateDistance(translate) {
+-    return Math.sqrt(translate[0] * translate[0] + translate[1] * translate[1]);
++/**
++ * Transforms the vec4 with a mat4.
++ *
++ * @param {vec4} out the receiving vector
++ * @param {vec4} a the vector to transform
++ * @param {mat4} m matrix to transform with
++ * @returns {vec4} out
++ */
++function transformMat4 (out, a, m) {
++  var x = a[0], y = a[1], z = a[2], w = a[3]
++  out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w
++  out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w
++  out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w
++  out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w
++  return out
+ }
+ 
+-// Finds features in this tile at a particular position.
+-FeatureIndex.prototype.query = function(args, styleLayers) {
+-    if (!this.vtLayers) {
+-        this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
+-        this.sourceLayerCoder = new DictionaryCoder(this.vtLayers ? Object.keys(this.vtLayers).sort() : ['_geojsonTileLayer']);
+-    }
+-
+-    var result = {};
+-
+-    var params = args.params || {},
+-        pixelsToTileUnits = EXTENT / args.tileSize / args.scale,
+-        filter = featureFilter(params.filter);
+-
+-    // Features are indexed their original geometries. The rendered geometries may
+-    // be buffered, translated or offset. Figure out how much the search radius needs to be
+-    // expanded by to include these features.
+-    var additionalRadius = 0;
+-    for (var id in styleLayers) {
+-        var styleLayer = styleLayers[id];
+-        var paint = styleLayer.paint;
+-
+-        var styleLayerDistance = 0;
+-        if (styleLayer.type === 'line') {
+-            styleLayerDistance = getLineWidth(paint) / 2 + Math.abs(paint['line-offset']) + translateDistance(paint['line-translate']);
+-        } else if (styleLayer.type === 'fill') {
+-            styleLayerDistance = translateDistance(paint['fill-translate']);
+-        } else if (styleLayer.type === 'circle') {
+-            styleLayerDistance = paint['circle-radius'] + translateDistance(paint['circle-translate']);
+-        }
+-        additionalRadius = Math.max(additionalRadius, styleLayerDistance * pixelsToTileUnits);
+-    }
+-
+-    var queryGeometry = args.queryGeometry.map(function(q) {
+-        return q.map(function(p) {
+-            return new Point(p.x, p.y);
+-        });
+-    });
+-
+-    var minX = Infinity;
+-    var minY = Infinity;
+-    var maxX = -Infinity;
+-    var maxY = -Infinity;
+-    for (var i = 0; i < queryGeometry.length; i++) {
+-        var ring = queryGeometry[i];
+-        for (var k = 0; k < ring.length; k++) {
+-            var p = ring[k];
+-            minX = Math.min(minX, p.x);
+-            minY = Math.min(minY, p.y);
+-            maxX = Math.max(maxX, p.x);
+-            maxY = Math.max(maxY, p.y);
+-        }
+-    }
+-
+-    var matching = this.grid.query(minX - additionalRadius, minY - additionalRadius, maxX + additionalRadius, maxY + additionalRadius);
+-    matching.sort(topDownFeatureComparator);
+-    this.filterMatching(result, matching, this.featureIndexArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+-
+-    var matchingSymbols = this.collisionTile.queryRenderedSymbols(minX, minY, maxX, maxY, args.scale);
+-    matchingSymbols.sort();
+-    this.filterMatching(result, matchingSymbols, this.collisionTile.collisionBoxArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+-
+-    return result;
+-};
++},{}],213:[function(require,module,exports){
++module.exports = decodeFloat
+ 
+-function topDownFeatureComparator(a, b) {
+-    return b - a;
+-}
++var UINT8_VIEW = new Uint8Array(4)
++var FLOAT_VIEW = new Float32Array(UINT8_VIEW.buffer)
+ 
+-function getLineWidth(paint) {
+-    if (paint['line-gap-width'] > 0) {
+-        return paint['line-gap-width'] + 2 * paint['line-width'];
+-    } else {
+-        return paint['line-width'];
+-    }
++function decodeFloat(x, y, z, w) {
++  UINT8_VIEW[0] = w
++  UINT8_VIEW[1] = z
++  UINT8_VIEW[2] = y
++  UINT8_VIEW[3] = x
++  return FLOAT_VIEW[0]
+ }
+ 
+-FeatureIndex.prototype.filterMatching = function(result, matching, array, queryGeometry, filter, filterLayerIDs, styleLayers, bearing, pixelsToTileUnits) {
+-    var previousIndex;
+-    for (var k = 0; k < matching.length; k++) {
+-        var index = matching[k];
+-
+-        // don't check the same feature more than once
+-        if (index === previousIndex) continue;
+-        previousIndex = index;
+-
+-        var match = array.get(index);
+-
+-        var layerIDs = this.bucketLayerIDs[match.bucketIndex];
+-        if (filterLayerIDs && !arraysIntersect(filterLayerIDs, layerIDs)) continue;
++},{}],214:[function(require,module,exports){
++var tokenize = require('glsl-tokenizer')
++var atob     = require('atob-lite')
+ 
+-        var sourceLayerName = this.sourceLayerCoder.decode(match.sourceLayerIndex);
+-        var sourceLayer = this.vtLayers[sourceLayerName];
+-        var feature = sourceLayer.feature(match.featureIndex);
++module.exports = getName
+ 
+-        if (!filter(feature)) continue;
++function getName(src) {
++  var tokens = Array.isArray(src)
++    ? src
++    : tokenize(src)
+ 
+-        var geometry = null;
++  for (var i = 0; i < tokens.length; i++) {
++    var token = tokens[i]
++    if (token.type !== 'preprocessor') continue
++    var match = token.data.match(/\#define\s+SHADER_NAME(_B64)?\s+(.+)$/)
++    if (!match) continue
++    if (!match[2]) continue
+ 
+-        for (var l = 0; l < layerIDs.length; l++) {
+-            var layerID = layerIDs[l];
++    var b64  = match[1]
++    var name = match[2]
+ 
+-            if (filterLayerIDs && filterLayerIDs.indexOf(layerID) < 0) {
+-                continue;
+-            }
++    return (b64 ? atob(name) : name).trim()
++  }
++}
+ 
+-            var styleLayer = styleLayers[layerID];
+-            if (!styleLayer) continue;
++},{"atob-lite":30,"glsl-tokenizer":221}],215:[function(require,module,exports){
++module.exports = tokenize
+ 
+-            var translatedPolygon;
+-            if (styleLayer.type !== 'symbol') {
+-                // all symbols already match the style
++var literals100 = require('./lib/literals')
++  , operators = require('./lib/operators')
++  , builtins100 = require('./lib/builtins')
++  , literals300es = require('./lib/literals-300es')
++  , builtins300es = require('./lib/builtins-300es')
+ 
+-                if (!geometry) geometry = loadGeometry(feature);
++var NORMAL = 999          // <-- never emitted
++  , TOKEN = 9999          // <-- never emitted
++  , BLOCK_COMMENT = 0
++  , LINE_COMMENT = 1
++  , PREPROCESSOR = 2
++  , OPERATOR = 3
++  , INTEGER = 4
++  , FLOAT = 5
++  , IDENT = 6
++  , BUILTIN = 7
++  , KEYWORD = 8
++  , WHITESPACE = 9
++  , EOF = 10
++  , HEX = 11
+ 
+-                var paint = styleLayer.paint;
++var map = [
++    'block-comment'
++  , 'line-comment'
++  , 'preprocessor'
++  , 'operator'
++  , 'integer'
++  , 'float'
++  , 'ident'
++  , 'builtin'
++  , 'keyword'
++  , 'whitespace'
++  , 'eof'
++  , 'integer'
++]
+ 
+-                if (styleLayer.type === 'line') {
+-                    translatedPolygon = translate(queryGeometry,
+-                            paint['line-translate'], paint['line-translate-anchor'],
+-                            bearing, pixelsToTileUnits);
+-                    var halfWidth = getLineWidth(paint) / 2 * pixelsToTileUnits;
+-                    if (paint['line-offset']) {
+-                        geometry = offsetLine(geometry, paint['line-offset'] * pixelsToTileUnits);
+-                    }
+-                    if (!multiPolygonIntersectsBufferedMultiLine(translatedPolygon, geometry, halfWidth)) continue;
++function tokenize(opt) {
++  var i = 0
++    , total = 0
++    , mode = NORMAL
++    , c
++    , last
++    , content = []
++    , tokens = []
++    , token_idx = 0
++    , token_offs = 0
++    , line = 1
++    , col = 0
++    , start = 0
++    , isnum = false
++    , isoperator = false
++    , input = ''
++    , len
+ 
+-                } else if (styleLayer.type === 'fill') {
+-                    translatedPolygon = translate(queryGeometry,
+-                            paint['fill-translate'], paint['fill-translate-anchor'],
+-                            bearing, pixelsToTileUnits);
+-                    if (!multiPolygonIntersectsMultiPolygon(translatedPolygon, geometry)) continue;
++  opt = opt || {}
++  var allBuiltins = builtins100
++  var allLiterals = literals100
++  if (opt.version === '300 es') {
++    allBuiltins = builtins300es
++    allLiterals = literals300es
++  }
+ 
+-                } else if (styleLayer.type === 'circle') {
+-                    translatedPolygon = translate(queryGeometry,
+-                            paint['circle-translate'], paint['circle-translate-anchor'],
+-                            bearing, pixelsToTileUnits);
+-                    var circleRadius = paint['circle-radius'] * pixelsToTileUnits;
+-                    if (!multiPolygonIntersectsBufferedMultiPoint(translatedPolygon, geometry, circleRadius)) continue;
+-                }
+-            }
++  return function(data) {
++    tokens = []
++    if (data !== null) return write(data.replace ? data.replace(/\r\n/g, '\n') : data)
++    return end()
++  }
+ 
+-            var geojsonFeature = new GeoJSONFeature(feature, this.z, this.x, this.y);
+-            geojsonFeature.layer = styleLayer.serialize({
+-                includeRefProperties: true
+-            });
+-            var layerResult = result[layerID];
+-            if (layerResult === undefined) {
+-                layerResult = result[layerID] = [];
+-            }
+-            layerResult.push(geojsonFeature);
+-        }
++  function token(data) {
++    if (data.length) {
++      tokens.push({
++        type: map[mode]
++      , data: data
++      , position: start
++      , line: line
++      , column: col
++      })
+     }
+-};
++  }
+ 
+-function translate(queryGeometry, translate, translateAnchor, bearing, pixelsToTileUnits) {
+-    if (!translate[0] && !translate[1]) {
+-        return queryGeometry;
+-    }
++  function write(chunk) {
++    i = 0
++    input += chunk
++    len = input.length
+ 
+-    translate = Point.convert(translate);
++    var last
+ 
+-    if (translateAnchor === "viewport") {
+-        translate._rotate(-bearing);
+-    }
++    while(c = input[i], i < len) {
++      last = i
+ 
+-    var translated = [];
+-    for (var i = 0; i < queryGeometry.length; i++) {
+-        var ring = queryGeometry[i];
+-        var translatedRing = [];
+-        for (var k = 0; k < ring.length; k++) {
+-            translatedRing.push(ring[k].sub(translate._mult(pixelsToTileUnits)));
++      switch(mode) {
++        case BLOCK_COMMENT: i = block_comment(); break
++        case LINE_COMMENT: i = line_comment(); break
++        case PREPROCESSOR: i = preprocessor(); break
++        case OPERATOR: i = operator(); break
++        case INTEGER: i = integer(); break
++        case HEX: i = hex(); break
++        case FLOAT: i = decimal(); break
++        case TOKEN: i = readtoken(); break
++        case WHITESPACE: i = whitespace(); break
++        case NORMAL: i = normal(); break
++      }
++
++      if(last !== i) {
++        switch(input[last]) {
++          case '\n': col = 0; ++line; break
++          default: ++col; break
+         }
+-        translated.push(translatedRing);
++      }
+     }
+-    return translated;
+-}
+-
+-function offsetLine(rings, offset) {
+-    var newRings = [];
+-    var zero = new Point(0, 0);
+-    for (var k = 0; k < rings.length; k++) {
+-        var ring = rings[k];
+-        var newRing = [];
+-        for (var i = 0; i < ring.length; i++) {
+-            var a = ring[i - 1];
+-            var b = ring[i];
+-            var c = ring[i + 1];
+-            var aToB = i === 0 ? zero : b.sub(a)._unit()._perp();
+-            var bToC = i === ring.length - 1 ? zero : c.sub(b)._unit()._perp();
+-            var extrude = aToB._add(bToC)._unit();
+ 
+-            var cosHalfAngle = extrude.x * bToC.x + extrude.y * bToC.y;
+-            extrude._mult(1 / cosHalfAngle);
++    total += i
++    input = input.slice(i)
++    return tokens
++  }
+ 
+-            newRing.push(extrude._mult(offset)._add(b));
+-        }
+-        newRings.push(newRing);
++  function end(chunk) {
++    if(content.length) {
++      token(content.join(''))
+     }
+-    return newRings;
+-}
+-
+-},{"../util/dictionary_coder":340,"../util/intersection_tests":344,"../util/struct_array":347,"../util/util":349,"../util/vectortile_to_geojson":350,"./bucket":247,"./load_geometry":254,"feature-filter":352,"grid-index":373,"pbf":402,"point-geometry":404,"vector-tile":413}],254:[function(require,module,exports){
+-'use strict';
+ 
+-var EXTENT = require('./bucket').EXTENT;
+-var EXTENT_MIN = EXTENT * -2;
+-var EXTENT_MAX = (EXTENT * 2) - 1;
++    mode = EOF
++    token('(eof)')
++    return tokens
++  }
+ 
+-// only log a geometry warning once per context
+-var warned = false;
++  function normal() {
++    content = content.length ? [] : content
+ 
+-/**
+- * Loads a geometry from a VectorTileFeature and scales it to the common extent
+- * used internally.
+- * @private
+- */
+-module.exports = function loadGeometry(feature) {
+-    var scale = EXTENT / feature.extent;
+-    var geometry = feature.loadGeometry();
+-    for (var r = 0; r < geometry.length; r++) {
+-        var ring = geometry[r];
+-        for (var p = 0; p < ring.length; p++) {
+-            var point = ring[p];
+-            // round here because mapbox-gl-native uses integers to represent
+-            // points and we need to do the same to avoid renering differences.
+-            point.x = Math.round(point.x * scale);
+-            point.y = Math.round(point.y * scale);
+-            if (warned === false && (
+-                point.x < EXTENT_MIN ||
+-                point.x > EXTENT_MAX ||
+-                point.y < EXTENT_MIN ||
+-                point.y > EXTENT_MAX)) {
+-                console.warn('Geometry exceeds allowed extent, reduce your vector tile buffer size');
+-                warned = true;
+-            }
+-        }
++    if(last === '/' && c === '*') {
++      start = total + i - 1
++      mode = BLOCK_COMMENT
++      last = c
++      return i + 1
+     }
+-    return geometry;
+-};
+-
+-},{"./bucket":247}],255:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = Coordinate;
+ 
+-/**
+- * A coordinate is a column, row, zoom combination, often used
+- * as the data component of a tile.
+- *
+- * @param {number} column
+- * @param {number} row
+- * @param {number} zoom
+- * @private
+- */
+-function Coordinate(column, row, zoom) {
+-    this.column = column;
+-    this.row = row;
+-    this.zoom = zoom;
+-}
++    if(last === '/' && c === '/') {
++      start = total + i - 1
++      mode = LINE_COMMENT
++      last = c
++      return i + 1
++    }
+ 
+-Coordinate.prototype = {
++    if(c === '#') {
++      mode = PREPROCESSOR
++      start = total + i
++      return i
++    }
+ 
+-    /**
+-     * Create a clone of this coordinate that can be mutated without
+-     * changing the original coordinate
+-     *
+-     * @returns {Coordinate} clone
+-     * @private
+-     * var coord = new Coordinate(0, 0, 0);
+-     * var c2 = coord.clone();
+-     * // since coord is cloned, modifying a property of c2 does
+-     * // not modify it.
+-     * c2.zoom = 2;
+-     */
+-    clone: function() {
+-        return new Coordinate(this.column, this.row, this.zoom);
+-    },
++    if(/\s/.test(c)) {
++      mode = WHITESPACE
++      start = total + i
++      return i
++    }
+ 
+-    /**
+-     * Zoom this coordinate to a given zoom level. This returns a new
+-     * coordinate object, not mutating the old one.
+-     *
+-     * @param {number} zoom
+-     * @returns {Coordinate} zoomed coordinate
+-     * @private
+-     * @example
+-     * var coord = new Coordinate(0, 0, 0);
+-     * var c2 = coord.zoomTo(1);
+-     * c2 // equals new Coordinate(0, 0, 1);
+-     */
+-    zoomTo: function(zoom) { return this.clone()._zoomTo(zoom); },
++    isnum = /\d/.test(c)
++    isoperator = /[^\w_]/.test(c)
+ 
+-    /**
+-     * Subtract the column and row values of this coordinate from those
+-     * of another coordinate. The other coordinat will be zoomed to the
+-     * same level as `this` before the subtraction occurs
+-     *
+-     * @param {Coordinate} c other coordinate
+-     * @returns {Coordinate} result
+-     * @private
+-     */
+-    sub: function(c) { return this.clone()._sub(c); },
++    start = total + i
++    mode = isnum ? INTEGER : isoperator ? OPERATOR : TOKEN
++    return i
++  }
+ 
+-    _zoomTo: function(zoom) {
+-        var scale = Math.pow(2, zoom - this.zoom);
+-        this.column *= scale;
+-        this.row *= scale;
+-        this.zoom = zoom;
+-        return this;
+-    },
++  function whitespace() {
++    if(/[^\s]/g.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-    _sub: function(c) {
+-        c = c.zoomTo(this.zoom);
+-        this.column -= c.column;
+-        this.row -= c.row;
+-        return this;
++  function preprocessor() {
++    if((c === '\r' || c === '\n') && last !== '\\') {
++      token(content.join(''))
++      mode = NORMAL
++      return i
+     }
+-};
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-},{}],256:[function(require,module,exports){
+-'use strict';
++  function line_comment() {
++    return preprocessor()
++  }
+ 
+-module.exports = LngLat;
++  function block_comment() {
++    if(c === '/' && last === '*') {
++      content.push(c)
++      token(content.join(''))
++      mode = NORMAL
++      return i + 1
++    }
+ 
+-var wrap = require('../util/util').wrap;
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-/**
+- * Create a longitude, latitude object from a given longitude and latitude pair in degrees.
+- * Mapbox GL uses Longitude, Latitude coordinate order to match GeoJSON.
+- *
+- * Note that any Mapbox GL method that accepts a `LngLat` object can also accept an
+- * `Array` and will perform an implicit conversion.  The following lines are equivalent:
+- ```
+- map.setCenter([-73.9749, 40.7736]);
+- map.setCenter( new mapboxgl.LngLat(-73.9749, 40.7736) );
+- ```
+- *
+- * @class LngLat
+- * @classdesc A representation of a longitude, latitude point, in degrees.
+- * @param {number} lng longitude
+- * @param {number} lat latitude
+- * @example
+- * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
+- */
+-function LngLat(lng, lat) {
+-    if (isNaN(lng) || isNaN(lat)) {
+-        throw new Error('Invalid LngLat object: (' + lng + ', ' + lat + ')');
++  function operator() {
++    if(last === '.' && /\d/.test(c)) {
++      mode = FLOAT
++      return i
+     }
+-    this.lng = +lng;
+-    this.lat = +lat;
+-    if (this.lat > 90 || this.lat < -90) {
+-        throw new Error('Invalid LngLat latitude value: must be between -90 and 90');
++
++    if(last === '/' && c === '*') {
++      mode = BLOCK_COMMENT
++      return i
+     }
+-}
+ 
+-/**
+- * Return a new `LngLat` object whose longitude is wrapped to the range (-180, 180).
+- *
+- * @returns {LngLat} wrapped LngLat object
+- * @example
+- * var ll = new mapboxgl.LngLat(286.0251, 40.7736);
+- * var wrapped = ll.wrap();
+- * wrapped.lng; // = -73.9749
+- */
+-LngLat.prototype.wrap = function () {
+-    return new LngLat(wrap(this.lng, -180, 180), this.lat);
+-};
++    if(last === '/' && c === '/') {
++      mode = LINE_COMMENT
++      return i
++    }
+ 
+-/**
+- * Return a `LngLat` as an array
+- *
+- * @returns {array} [lng, lat]
+- * @example
+- * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
+- * ll.toArray(); // = [-73.9749, 40.7736]
+- */
+-LngLat.prototype.toArray = function () {
+-    return [this.lng, this.lat];
+-};
++    if(c === '.' && content.length) {
++      while(determine_operator(content));
+ 
+-/**
+- * Return a `LngLat` as a string
+- *
+- * @returns {string} "LngLat(lng, lat)"
+- * @example
+- * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
+- * ll.toString(); // = "LngLat(-73.9749, 40.7736)"
+- */
+-LngLat.prototype.toString = function () {
+-    return 'LngLat(' + this.lng + ', ' + this.lat + ')';
+-};
++      mode = FLOAT
++      return i
++    }
+ 
+-/**
+- * Convert an array to a `LngLat` object, or return an existing `LngLat` object
+- * unchanged.
+- *
+- * @param {Array<number>|LngLat} input `input` to convert
+- * @returns {LngLat} LngLat object or original input
+- * @example
+- * var arr = [-73.9749, 40.7736];
+- * var ll = mapboxgl.LngLat.convert(arr);
+- * ll;   // = LngLat {lng: -73.9749, lat: 40.7736}
+- */
+-LngLat.convert = function (input) {
+-    if (input instanceof LngLat) {
+-        return input;
++    if(c === ';' || c === ')' || c === '(') {
++      if(content.length) while(determine_operator(content));
++      token(c)
++      mode = NORMAL
++      return i + 1
+     }
+-    if (Array.isArray(input)) {
+-        return new LngLat(input[0], input[1]);
++
++    var is_composite_operator = content.length === 2 && c !== '='
++    if(/[\w_\d\s]/.test(c) || is_composite_operator) {
++      while(determine_operator(content));
++      mode = NORMAL
++      return i
+     }
+-    return input;
+-};
+ 
+-},{"../util/util":349}],257:[function(require,module,exports){
+-'use strict';
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-module.exports = LngLatBounds;
++  function determine_operator(buf) {
++    var j = 0
++      , idx
++      , res
+ 
+-var LngLat = require('./lng_lat');
++    do {
++      idx = operators.indexOf(buf.slice(0, buf.length + j).join(''))
++      res = operators[idx]
+ 
+-/**
+- * Creates a bounding box from the given pair of points. If parameteres are omitted, a `null` bounding box is created.
+- *
+- * @class LngLatBounds
+- * @classdesc A representation of rectangular box on the earth, defined by its southwest and northeast points in longitude and latitude.
+- * @param {LngLat} sw southwest
+- * @param {LngLat} ne northeast
+- * @example
+- * var sw = new mapboxgl.LngLat(-73.9876, 40.7661);
+- * var ne = new mapboxgl.LngLat(-73.9397, 40.8002);
+- * var llb = new mapboxgl.LngLatBounds(sw, ne);
+- */
+-function LngLatBounds(sw, ne) {
+-    if (!sw) {
+-        return;
+-    } else if (ne) {
+-        this.extend(sw).extend(ne);
+-    } else if (sw.length === 4) {
+-        this.extend([sw[0], sw[1]]).extend([sw[2], sw[3]]);
+-    } else {
+-        this.extend(sw[0]).extend(sw[1]);
+-    }
+-}
++      if(idx === -1) {
++        if(j-- + buf.length > 0) continue
++        res = buf.slice(0, 1).join('')
++      }
+ 
+-LngLatBounds.prototype = {
++      token(res)
++
++      start += res.length
++      content = content.slice(res.length)
++      return content.length
++    } while(1)
++  }
+ 
+-    /**
+-     * Extend the bounds to include a given LngLat or LngLatBounds.
+-     *
+-     * @param {LngLat|LngLatBounds} obj object to extend to
+-     * @returns {LngLatBounds} `this`
+-     */
+-    extend: function(obj) {
+-        var sw = this._sw,
+-            ne = this._ne,
+-            sw2, ne2;
++  function hex() {
++    if(/[^a-fA-F0-9]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
+ 
+-        if (obj instanceof LngLat) {
+-            sw2 = obj;
+-            ne2 = obj;
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-        } else if (obj instanceof LngLatBounds) {
+-            sw2 = obj._sw;
+-            ne2 = obj._ne;
++  function integer() {
++    if(c === '.') {
++      content.push(c)
++      mode = FLOAT
++      last = c
++      return i + 1
++    }
+ 
+-            if (!sw2 || !ne2) return this;
++    if(/[eE]/.test(c)) {
++      content.push(c)
++      mode = FLOAT
++      last = c
++      return i + 1
++    }
+ 
+-        } else {
+-            return obj ? this.extend(LngLat.convert(obj) || LngLatBounds.convert(obj)) : this;
+-        }
++    if(c === 'x' && content.length === 1 && content[0] === '0') {
++      mode = HEX
++      content.push(c)
++      last = c
++      return i + 1
++    }
+ 
+-        if (!sw && !ne) {
+-            this._sw = new LngLat(sw2.lng, sw2.lat);
+-            this._ne = new LngLat(ne2.lng, ne2.lat);
++    if(/[^\d]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
+ 
+-        } else {
+-            sw.lng = Math.min(sw2.lng, sw.lng);
+-            sw.lat = Math.min(sw2.lat, sw.lat);
+-            ne.lng = Math.max(ne2.lng, ne.lng);
+-            ne.lat = Math.max(ne2.lat, ne.lat);
+-        }
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-        return this;
+-    },
++  function decimal() {
++    if(c === 'f') {
++      content.push(c)
++      last = c
++      i += 1
++    }
+ 
+-    /**
+-     * Get the point equidistant from this box's corners
+-     * @returns {LngLat} centerpoint
+-     * @example
+-     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
+-     * llb.getCenter(); // = LngLat {lng: -73.96365, lat: 40.78315}
+-     */
+-    getCenter: function() {
+-        return new LngLat((this._sw.lng + this._ne.lng) / 2, (this._sw.lat + this._ne.lat) / 2);
+-    },
++    if(/[eE]/.test(c)) {
++      content.push(c)
++      last = c
++      return i + 1
++    }
+ 
+-    /**
+-     * Get southwest corner
+-     * @returns {LngLat} southwest
+-     */
+-    getSouthWest: function() { return this._sw; },
++    if (c === '-' && /[eE]/.test(last)) {
++      content.push(c)
++      last = c
++      return i + 1
++    }
+ 
+-    /**
+-     * Get northeast corner
+-     * @returns {LngLat} northeast
+-     */
+-    getNorthEast: function() { return this._ne; },
++    if(/[^\d]/.test(c)) {
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
+ 
+-    /**
+-     * Get northwest corner
+-     * @returns {LngLat} northwest
+-     */
+-    getNorthWest: function() { return new LngLat(this.getWest(), this.getNorth()); },
++    content.push(c)
++    last = c
++    return i + 1
++  }
+ 
+-    /**
+-     * Get southeast corner
+-     * @returns {LngLat} southeast
+-     */
+-    getSouthEast: function() { return new LngLat(this.getEast(), this.getSouth()); },
++  function readtoken() {
++    if(/[^\d\w_]/.test(c)) {
++      var contentstr = content.join('')
++      if(allLiterals.indexOf(contentstr) > -1) {
++        mode = KEYWORD
++      } else if(allBuiltins.indexOf(contentstr) > -1) {
++        mode = BUILTIN
++      } else {
++        mode = IDENT
++      }
++      token(content.join(''))
++      mode = NORMAL
++      return i
++    }
++    content.push(c)
++    last = c
++    return i + 1
++  }
++}
+ 
+-    /**
+-     * Get west edge longitude
+-     * @returns {number} west
+-     */
+-    getWest:  function() { return this._sw.lng; },
++},{"./lib/builtins":217,"./lib/builtins-300es":216,"./lib/literals":219,"./lib/literals-300es":218,"./lib/operators":220}],216:[function(require,module,exports){
++// 300es builtins/reserved words that were previously valid in v100
++var v100 = require('./builtins')
+ 
+-    /**
+-     * Get south edge latitude
+-     * @returns {number} south
+-     */
+-    getSouth: function() { return this._sw.lat; },
++// The texture2D|Cube functions have been removed
++// And the gl_ features are updated
++v100 = v100.slice().filter(function (b) {
++  return !/^(gl\_|texture)/.test(b)
++})
+ 
+-    /**
+-     * Get east edge longitude
+-     * @returns {number} east
+-     */
+-    getEast:  function() { return this._ne.lng; },
++module.exports = v100.concat([
++  // the updated gl_ constants
++    'gl_VertexID'
++  , 'gl_InstanceID'
++  , 'gl_Position'
++  , 'gl_PointSize'
++  , 'gl_FragCoord'
++  , 'gl_FrontFacing'
++  , 'gl_FragDepth'
++  , 'gl_PointCoord'
++  , 'gl_MaxVertexAttribs'
++  , 'gl_MaxVertexUniformVectors'
++  , 'gl_MaxVertexOutputVectors'
++  , 'gl_MaxFragmentInputVectors'
++  , 'gl_MaxVertexTextureImageUnits'
++  , 'gl_MaxCombinedTextureImageUnits'
++  , 'gl_MaxTextureImageUnits'
++  , 'gl_MaxFragmentUniformVectors'
++  , 'gl_MaxDrawBuffers'
++  , 'gl_MinProgramTexelOffset'
++  , 'gl_MaxProgramTexelOffset'
++  , 'gl_DepthRangeParameters'
++  , 'gl_DepthRange'
+ 
+-    /**
+-     * Get north edge latitude
+-     * @returns {number} north
+-     */
+-    getNorth: function() { return this._ne.lat; },
++  // other builtins
++  , 'trunc'
++  , 'round'
++  , 'roundEven'
++  , 'isnan'
++  , 'isinf'
++  , 'floatBitsToInt'
++  , 'floatBitsToUint'
++  , 'intBitsToFloat'
++  , 'uintBitsToFloat'
++  , 'packSnorm2x16'
++  , 'unpackSnorm2x16'
++  , 'packUnorm2x16'
++  , 'unpackUnorm2x16'
++  , 'packHalf2x16'
++  , 'unpackHalf2x16'
++  , 'outerProduct'
++  , 'transpose'
++  , 'determinant'
++  , 'inverse'
++  , 'texture'
++  , 'textureSize'
++  , 'textureProj'
++  , 'textureLod'
++  , 'textureOffset'
++  , 'texelFetch'
++  , 'texelFetchOffset'
++  , 'textureProjOffset'
++  , 'textureLodOffset'
++  , 'textureProjLod'
++  , 'textureProjLodOffset'
++  , 'textureGrad'
++  , 'textureGradOffset'
++  , 'textureProjGrad'
++  , 'textureProjGradOffset'
++])
+ 
+-    /**
+-     * Return a `LngLatBounds` as an array
+-     *
+-     * @returns {array} [lng, lat]
+-     * @example
+-     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
+-     * llb.toArray(); // = [[-73.9876, 40.7661], [-73.9397, 40.8002]]
+-     */
+-    toArray: function () {
+-        return [this._sw.toArray(), this._ne.toArray()];
+-    },
++},{"./builtins":217}],217:[function(require,module,exports){
++module.exports = [
++  // Keep this list sorted
++  'abs'
++  , 'acos'
++  , 'all'
++  , 'any'
++  , 'asin'
++  , 'atan'
++  , 'ceil'
++  , 'clamp'
++  , 'cos'
++  , 'cross'
++  , 'dFdx'
++  , 'dFdy'
++  , 'degrees'
++  , 'distance'
++  , 'dot'
++  , 'equal'
++  , 'exp'
++  , 'exp2'
++  , 'faceforward'
++  , 'floor'
++  , 'fract'
++  , 'gl_BackColor'
++  , 'gl_BackLightModelProduct'
++  , 'gl_BackLightProduct'
++  , 'gl_BackMaterial'
++  , 'gl_BackSecondaryColor'
++  , 'gl_ClipPlane'
++  , 'gl_ClipVertex'
++  , 'gl_Color'
++  , 'gl_DepthRange'
++  , 'gl_DepthRangeParameters'
++  , 'gl_EyePlaneQ'
++  , 'gl_EyePlaneR'
++  , 'gl_EyePlaneS'
++  , 'gl_EyePlaneT'
++  , 'gl_Fog'
++  , 'gl_FogCoord'
++  , 'gl_FogFragCoord'
++  , 'gl_FogParameters'
++  , 'gl_FragColor'
++  , 'gl_FragCoord'
++  , 'gl_FragData'
++  , 'gl_FragDepth'
++  , 'gl_FragDepthEXT'
++  , 'gl_FrontColor'
++  , 'gl_FrontFacing'
++  , 'gl_FrontLightModelProduct'
++  , 'gl_FrontLightProduct'
++  , 'gl_FrontMaterial'
++  , 'gl_FrontSecondaryColor'
++  , 'gl_LightModel'
++  , 'gl_LightModelParameters'
++  , 'gl_LightModelProducts'
++  , 'gl_LightProducts'
++  , 'gl_LightSource'
++  , 'gl_LightSourceParameters'
++  , 'gl_MaterialParameters'
++  , 'gl_MaxClipPlanes'
++  , 'gl_MaxCombinedTextureImageUnits'
++  , 'gl_MaxDrawBuffers'
++  , 'gl_MaxFragmentUniformComponents'
++  , 'gl_MaxLights'
++  , 'gl_MaxTextureCoords'
++  , 'gl_MaxTextureImageUnits'
++  , 'gl_MaxTextureUnits'
++  , 'gl_MaxVaryingFloats'
++  , 'gl_MaxVertexAttribs'
++  , 'gl_MaxVertexTextureImageUnits'
++  , 'gl_MaxVertexUniformComponents'
++  , 'gl_ModelViewMatrix'
++  , 'gl_ModelViewMatrixInverse'
++  , 'gl_ModelViewMatrixInverseTranspose'
++  , 'gl_ModelViewMatrixTranspose'
++  , 'gl_ModelViewProjectionMatrix'
++  , 'gl_ModelViewProjectionMatrixInverse'
++  , 'gl_ModelViewProjectionMatrixInverseTranspose'
++  , 'gl_ModelViewProjectionMatrixTranspose'
++  , 'gl_MultiTexCoord0'
++  , 'gl_MultiTexCoord1'
++  , 'gl_MultiTexCoord2'
++  , 'gl_MultiTexCoord3'
++  , 'gl_MultiTexCoord4'
++  , 'gl_MultiTexCoord5'
++  , 'gl_MultiTexCoord6'
++  , 'gl_MultiTexCoord7'
++  , 'gl_Normal'
++  , 'gl_NormalMatrix'
++  , 'gl_NormalScale'
++  , 'gl_ObjectPlaneQ'
++  , 'gl_ObjectPlaneR'
++  , 'gl_ObjectPlaneS'
++  , 'gl_ObjectPlaneT'
++  , 'gl_Point'
++  , 'gl_PointCoord'
++  , 'gl_PointParameters'
++  , 'gl_PointSize'
++  , 'gl_Position'
++  , 'gl_ProjectionMatrix'
++  , 'gl_ProjectionMatrixInverse'
++  , 'gl_ProjectionMatrixInverseTranspose'
++  , 'gl_ProjectionMatrixTranspose'
++  , 'gl_SecondaryColor'
++  , 'gl_TexCoord'
++  , 'gl_TextureEnvColor'
++  , 'gl_TextureMatrix'
++  , 'gl_TextureMatrixInverse'
++  , 'gl_TextureMatrixInverseTranspose'
++  , 'gl_TextureMatrixTranspose'
++  , 'gl_Vertex'
++  , 'greaterThan'
++  , 'greaterThanEqual'
++  , 'inversesqrt'
++  , 'length'
++  , 'lessThan'
++  , 'lessThanEqual'
++  , 'log'
++  , 'log2'
++  , 'matrixCompMult'
++  , 'max'
++  , 'min'
++  , 'mix'
++  , 'mod'
++  , 'normalize'
++  , 'not'
++  , 'notEqual'
++  , 'pow'
++  , 'radians'
++  , 'reflect'
++  , 'refract'
++  , 'sign'
++  , 'sin'
++  , 'smoothstep'
++  , 'sqrt'
++  , 'step'
++  , 'tan'
++  , 'texture2D'
++  , 'texture2DLod'
++  , 'texture2DProj'
++  , 'texture2DProjLod'
++  , 'textureCube'
++  , 'textureCubeLod'
++  , 'texture2DLodEXT'
++  , 'texture2DProjLodEXT'
++  , 'textureCubeLodEXT'
++  , 'texture2DGradEXT'
++  , 'texture2DProjGradEXT'
++  , 'textureCubeGradEXT'
++]
+ 
+-    /**
+-     * Return a `LngLatBounds` as a string
+-     *
+-     * @returns {string} "LngLatBounds(LngLat(lng, lat), LngLat(lng, lat))"
+-     * @example
+-     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
+-     * llb.toString(); // = "LngLatBounds(LngLat(-73.9876, 40.7661), LngLat(-73.9397, 40.8002))"
+-     */
+-    toString: function () {
+-        return 'LngLatBounds(' + this._sw.toString() + ', ' + this._ne.toString() + ')';
+-    }
+-};
++},{}],218:[function(require,module,exports){
++var v100 = require('./literals')
+ 
+-/**
+- * Convert an array to a `LngLatBounds` object, or return an existing
+- * `LngLatBounds` object unchanged.
+- *
+- * Calls `LngLat#convert` internally to convert arrays as `LngLat` values.
+- *
+- * @param {LngLatBounds|Array<number>|Array<Array<number>>} input input to convert to a LngLatBounds
+- * @returns {LngLatBounds} LngLatBounds object or original input
+- * @example
+- * var arr = [[-73.9876, 40.7661], [-73.9397, 40.8002]];
+- * var llb = mapboxgl.LngLatBounds.convert(arr);
+- * llb;   // = LngLatBounds {_sw: LngLat {lng: -73.9876, lat: 40.7661}, _ne: LngLat {lng: -73.9397, lat: 40.8002}}
+- */
+-LngLatBounds.convert = function (input) {
+-    if (!input || input instanceof LngLatBounds) return input;
+-    return new LngLatBounds(input);
+-};
++module.exports = v100.slice().concat([
++   'layout'
++  , 'centroid'
++  , 'smooth'
++  , 'case'
++  , 'mat2x2'
++  , 'mat2x3'
++  , 'mat2x4'
++  , 'mat3x2'
++  , 'mat3x3'
++  , 'mat3x4'
++  , 'mat4x2'
++  , 'mat4x3'
++  , 'mat4x4'
++  , 'uint'
++  , 'uvec2'
++  , 'uvec3'
++  , 'uvec4'
++  , 'samplerCubeShadow'
++  , 'sampler2DArray'
++  , 'sampler2DArrayShadow'
++  , 'isampler2D'
++  , 'isampler3D'
++  , 'isamplerCube'
++  , 'isampler2DArray'
++  , 'usampler2D'
++  , 'usampler3D'
++  , 'usamplerCube'
++  , 'usampler2DArray'
++  , 'coherent'
++  , 'restrict'
++  , 'readonly'
++  , 'writeonly'
++  , 'resource'
++  , 'atomic_uint'
++  , 'noperspective'
++  , 'patch'
++  , 'sample'
++  , 'subroutine'
++  , 'common'
++  , 'partition'
++  , 'active'
++  , 'filter'
++  , 'image1D'
++  , 'image2D'
++  , 'image3D'
++  , 'imageCube'
++  , 'iimage1D'
++  , 'iimage2D'
++  , 'iimage3D'
++  , 'iimageCube'
++  , 'uimage1D'
++  , 'uimage2D'
++  , 'uimage3D'
++  , 'uimageCube'
++  , 'image1DArray'
++  , 'image2DArray'
++  , 'iimage1DArray'
++  , 'iimage2DArray'
++  , 'uimage1DArray'
++  , 'uimage2DArray'
++  , 'image1DShadow'
++  , 'image2DShadow'
++  , 'image1DArrayShadow'
++  , 'image2DArrayShadow'
++  , 'imageBuffer'
++  , 'iimageBuffer'
++  , 'uimageBuffer'
++  , 'sampler1DArray'
++  , 'sampler1DArrayShadow'
++  , 'isampler1D'
++  , 'isampler1DArray'
++  , 'usampler1D'
++  , 'usampler1DArray'
++  , 'isampler2DRect'
++  , 'usampler2DRect'
++  , 'samplerBuffer'
++  , 'isamplerBuffer'
++  , 'usamplerBuffer'
++  , 'sampler2DMS'
++  , 'isampler2DMS'
++  , 'usampler2DMS'
++  , 'sampler2DMSArray'
++  , 'isampler2DMSArray'
++  , 'usampler2DMSArray'
++])
+ 
+-},{"./lng_lat":256}],258:[function(require,module,exports){
+-'use strict';
++},{"./literals":219}],219:[function(require,module,exports){
++module.exports = [
++  // current
++    'precision'
++  , 'highp'
++  , 'mediump'
++  , 'lowp'
++  , 'attribute'
++  , 'const'
++  , 'uniform'
++  , 'varying'
++  , 'break'
++  , 'continue'
++  , 'do'
++  , 'for'
++  , 'while'
++  , 'if'
++  , 'else'
++  , 'in'
++  , 'out'
++  , 'inout'
++  , 'float'
++  , 'int'
++  , 'void'
++  , 'bool'
++  , 'true'
++  , 'false'
++  , 'discard'
++  , 'return'
++  , 'mat2'
++  , 'mat3'
++  , 'mat4'
++  , 'vec2'
++  , 'vec3'
++  , 'vec4'
++  , 'ivec2'
++  , 'ivec3'
++  , 'ivec4'
++  , 'bvec2'
++  , 'bvec3'
++  , 'bvec4'
++  , 'sampler1D'
++  , 'sampler2D'
++  , 'sampler3D'
++  , 'samplerCube'
++  , 'sampler1DShadow'
++  , 'sampler2DShadow'
++  , 'struct'
+ 
+-var LngLat = require('./lng_lat'),
+-    Point = require('point-geometry'),
+-    Coordinate = require('./coordinate'),
+-    wrap = require('../util/util').wrap,
+-    interp = require('../util/interpolate'),
+-    TileCoord = require('../source/tile_coord'),
+-    EXTENT = require('../data/bucket').EXTENT,
+-    glmatrix = require('gl-matrix');
++  // future
++  , 'asm'
++  , 'class'
++  , 'union'
++  , 'enum'
++  , 'typedef'
++  , 'template'
++  , 'this'
++  , 'packed'
++  , 'goto'
++  , 'switch'
++  , 'default'
++  , 'inline'
++  , 'noinline'
++  , 'volatile'
++  , 'public'
++  , 'static'
++  , 'extern'
++  , 'external'
++  , 'interface'
++  , 'long'
++  , 'short'
++  , 'double'
++  , 'half'
++  , 'fixed'
++  , 'unsigned'
++  , 'input'
++  , 'output'
++  , 'hvec2'
++  , 'hvec3'
++  , 'hvec4'
++  , 'dvec2'
++  , 'dvec3'
++  , 'dvec4'
++  , 'fvec2'
++  , 'fvec3'
++  , 'fvec4'
++  , 'sampler2DRect'
++  , 'sampler3DRect'
++  , 'sampler2DRectShadow'
++  , 'sizeof'
++  , 'cast'
++  , 'namespace'
++  , 'using'
++]
+ 
+-var vec4 = glmatrix.vec4,
+-    mat4 = glmatrix.mat4,
+-    mat2 = glmatrix.mat2;
++},{}],220:[function(require,module,exports){
++module.exports = [
++    '<<='
++  , '>>='
++  , '++'
++  , '--'
++  , '<<'
++  , '>>'
++  , '<='
++  , '>='
++  , '=='
++  , '!='
++  , '&&'
++  , '||'
++  , '+='
++  , '-='
++  , '*='
++  , '/='
++  , '%='
++  , '&='
++  , '^^'
++  , '^='
++  , '|='
++  , '('
++  , ')'
++  , '['
++  , ']'
++  , '.'
++  , '!'
++  , '~'
++  , '*'
++  , '/'
++  , '%'
++  , '+'
++  , '-'
++  , '<'
++  , '>'
++  , '&'
++  , '^'
++  , '|'
++  , '?'
++  , ':'
++  , '='
++  , ','
++  , ';'
++  , '{'
++  , '}'
++]
+ 
+-module.exports = Transform;
++},{}],221:[function(require,module,exports){
++var tokenize = require('./index')
+ 
+-/**
+- * A single transform, generally used for a single tile to be
+- * scaled, rotated, and zoomed.
+- *
+- * @param {number} minZoom
+- * @param {number} maxZoom
+- * @private
+- */
+-function Transform(minZoom, maxZoom) {
+-    this.tileSize = 512; // constant
++module.exports = tokenizeString
+ 
+-    this._minZoom = minZoom || 0;
+-    this._maxZoom = maxZoom || 22;
++function tokenizeString(str, opt) {
++  var generator = tokenize(opt)
++  var tokens = []
+ 
+-    this.latRange = [-85.05113, 85.05113];
++  tokens = tokens.concat(generator(str))
++  tokens = tokens.concat(generator(null))
+ 
+-    this.width = 0;
+-    this.height = 0;
+-    this._center = new LngLat(0, 0);
+-    this.zoom = 0;
+-    this.angle = 0;
+-    this._altitude = 1.5;
+-    this._pitch = 0;
+-    this._unmodified = true;
++  return tokens
+ }
+ 
+-Transform.prototype = {
+-    get minZoom() { return this._minZoom; },
+-    set minZoom(zoom) {
+-        if (this._minZoom === zoom) return;
+-        this._minZoom = zoom;
+-        this.zoom = Math.max(this.zoom, zoom);
+-    },
+-
+-    get maxZoom() { return this._maxZoom; },
+-    set maxZoom(zoom) {
+-        if (this._maxZoom === zoom) return;
+-        this._maxZoom = zoom;
+-        this.zoom = Math.min(this.zoom, zoom);
+-    },
+-
+-    get worldSize() {
+-        return this.tileSize * this.scale;
+-    },
+-
+-    get centerPoint() {
+-        return this.size._div(2);
+-    },
+-
+-    get size() {
+-        return new Point(this.width, this.height);
+-    },
+-
+-    get bearing() {
+-        return -this.angle / Math.PI * 180;
+-    },
+-    set bearing(bearing) {
+-        var b = -wrap(bearing, -180, 180) * Math.PI / 180;
+-        if (this.angle === b) return;
+-        this._unmodified = false;
+-        this.angle = b;
+-        this._calcProjMatrix();
+-
+-        // 2x2 matrix for rotating points
+-        this.rotationMatrix = mat2.create();
+-        mat2.rotate(this.rotationMatrix, this.rotationMatrix, this.angle);
+-    },
+-
+-    get pitch() {
+-        return this._pitch / Math.PI * 180;
+-    },
+-    set pitch(pitch) {
+-        var p = Math.min(60, pitch) / 180 * Math.PI;
+-        if (this._pitch === p) return;
+-        this._unmodified = false;
+-        this._pitch = p;
+-        this._calcProjMatrix();
+-    },
+-
+-    get altitude() {
+-        return this._altitude;
+-    },
+-    set altitude(altitude) {
+-        var a = Math.max(0.75, altitude);
+-        if (this._altitude === a) return;
+-        this._unmodified = false;
+-        this._altitude = a;
+-        this._calcProjMatrix();
+-    },
+-
+-    get zoom() { return this._zoom; },
+-    set zoom(zoom) {
+-        var z = Math.min(Math.max(zoom, this.minZoom), this.maxZoom);
+-        if (this._zoom === z) return;
+-        this._unmodified = false;
+-        this._zoom = z;
+-        this.scale = this.zoomScale(z);
+-        this.tileZoom = Math.floor(z);
+-        this.zoomFraction = z - this.tileZoom;
+-        this._calcProjMatrix();
+-        this._constrain();
+-    },
+-
+-    get center() { return this._center; },
+-    set center(center) {
+-        if (center.lat === this._center.lat && center.lng === this._center.lng) return;
+-        this._unmodified = false;
+-        this._center = center;
+-        this._calcProjMatrix();
+-        this._constrain();
+-    },
+-
+-    resize: function(width, height) {
+-        this.width = width;
+-        this.height = height;
+-
+-        this.pixelsToGLUnits = [2 / width, -2 / height];
+-        this._calcProjMatrix();
+-        this._constrain();
+-    },
+-
+-    get unmodified() { return this._unmodified; },
+-
+-    zoomScale: function(zoom) { return Math.pow(2, zoom); },
+-    scaleZoom: function(scale) { return Math.log(scale) / Math.LN2; },
+-
+-    project: function(lnglat, worldSize) {
+-        return new Point(
+-            this.lngX(lnglat.lng, worldSize),
+-            this.latY(lnglat.lat, worldSize));
+-    },
++},{"./index":215}],222:[function(require,module,exports){
++'use strict';
+ 
+-    unproject: function(point, worldSize) {
+-        return new LngLat(
+-            this.xLng(point.x, worldSize),
+-            this.yLat(point.y, worldSize));
+-    },
++module.exports = GridIndex;
+ 
+-    get x() { return this.lngX(this.center.lng); },
+-    get y() { return this.latY(this.center.lat); },
++var NUM_PARAMS = 3;
+ 
+-    get point() { return new Point(this.x, this.y); },
++function GridIndex(extent, n, padding) {
++    var cells = this.cells = [];
+ 
+-    /**
+-     * latitude to absolute x coord
+-     * @param {number} lon
+-     * @param {number} [worldSize=this.worldSize]
+-     * @returns {number} pixel coordinate
+-     * @private
+-     */
+-    lngX: function(lng, worldSize) {
+-        return (180 + lng) * (worldSize || this.worldSize) / 360;
+-    },
+-    /**
+-     * latitude to absolute y coord
+-     * @param {number} lat
+-     * @param {number} [worldSize=this.worldSize]
+-     * @returns {number} pixel coordinate
+-     * @private
+-     */
+-    latY: function(lat, worldSize) {
+-        var y = 180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360));
+-        return (180 - y) * (worldSize || this.worldSize) / 360;
+-    },
++    if (extent instanceof ArrayBuffer) {
++        this.arrayBuffer = extent;
++        var array = new Int32Array(this.arrayBuffer);
++        extent = array[0];
++        n = array[1];
++        padding = array[2];
+ 
+-    xLng: function(x, worldSize) {
+-        return x * 360 / (worldSize || this.worldSize) - 180;
+-    },
+-    yLat: function(y, worldSize) {
+-        var y2 = 180 - y * 360 / (worldSize || this.worldSize);
+-        return 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90;
+-    },
++        this.d = n + 2 * padding;
++        for (var k = 0; k < this.d * this.d; k++) {
++            var start = array[NUM_PARAMS + k];
++            var end = array[NUM_PARAMS + k + 1];
++            cells.push(start === end ?
++                    null :
++                    array.subarray(start, end));
++        }
++        var keysOffset = array[NUM_PARAMS + cells.length];
++        var bboxesOffset = array[NUM_PARAMS + cells.length + 1];
++        this.keys = array.subarray(keysOffset, bboxesOffset);
++        this.bboxes = array.subarray(bboxesOffset);
+ 
+-    panBy: function(offset) {
+-        var point = this.centerPoint._add(offset);
+-        this.center = this.pointLocation(point);
+-    },
++        this.insert = this._insertReadonly;
+ 
+-    setLocationAtPoint: function(lnglat, point) {
+-        var c = this.locationCoordinate(lnglat);
+-        var coordAtPoint = this.pointCoordinate(point);
+-        var coordCenter = this.pointCoordinate(this.centerPoint);
+-        var translate = coordAtPoint._sub(c);
+-        this._unmodified = false;
+-        this.center = this.coordinateLocation(coordCenter._sub(translate));
+-    },
++    } else {
++        this.d = n + 2 * padding;
++        for (var i = 0; i < this.d * this.d; i++) {
++            cells.push([]);
++        }
++        this.keys = [];
++        this.bboxes = [];
++    }
+ 
+-    /**
+-     * Given a location, return the screen point that corresponds to it
+-     * @param {LngLat} lnglat location
+-     * @returns {Point} screen point
+-     * @private
+-     */
+-    locationPoint: function(lnglat) {
+-        return this.coordinatePoint(this.locationCoordinate(lnglat));
+-    },
++    this.n = n;
++    this.extent = extent;
++    this.padding = padding;
++    this.scale = n / extent;
++    this.uid = 0;
+ 
+-    /**
+-     * Given a point on screen, return its lnglat
+-     * @param {Point} p screen point
+-     * @returns {LngLat} lnglat location
+-     * @private
+-     */
+-    pointLocation: function(p) {
+-        return this.coordinateLocation(this.pointCoordinate(p));
+-    },
++    var p = (padding / n) * extent;
++    this.min = -p;
++    this.max = extent + p;
++}
+ 
+-    /**
+-     * Given a geographical lnglat, return an unrounded
+-     * coordinate that represents it at this transform's zoom level and
+-     * worldsize.
+-     * @param {LngLat} lnglat
+-     * @returns {Coordinate}
+-     * @private
+-     */
+-    locationCoordinate: function(lnglat) {
+-        var k = this.zoomScale(this.tileZoom) / this.worldSize,
+-            ll = LngLat.convert(lnglat);
+ 
+-        return new Coordinate(
+-            this.lngX(ll.lng) * k,
+-            this.latY(ll.lat) * k,
+-            this.tileZoom);
+-    },
++GridIndex.prototype.insert = function(key, x1, y1, x2, y2) {
++    this._forEachCell(x1, y1, x2, y2, this._insertCell, this.uid++);
++    this.keys.push(key);
++    this.bboxes.push(x1);
++    this.bboxes.push(y1);
++    this.bboxes.push(x2);
++    this.bboxes.push(y2);
++};
+ 
+-    /**
+-     * Given a Coordinate, return its geographical position.
+-     * @param {Coordinate} coord
+-     * @returns {LngLat} lnglat
+-     * @private
+-     */
+-    coordinateLocation: function(coord) {
+-        var worldSize = this.zoomScale(coord.zoom);
+-        return new LngLat(
+-            this.xLng(coord.column, worldSize),
+-            this.yLat(coord.row, worldSize));
+-    },
++GridIndex.prototype._insertReadonly = function() {
++    throw 'Cannot insert into a GridIndex created from an ArrayBuffer.';
++};
+ 
+-    pointCoordinate: function(p) {
++GridIndex.prototype._insertCell = function(x1, y1, x2, y2, cellIndex, uid) {
++    this.cells[cellIndex].push(uid);
++};
+ 
+-        var targetZ = 0;
++GridIndex.prototype.query = function(x1, y1, x2, y2) {
++    var min = this.min;
++    var max = this.max;
++    if (x1 <= min && y1 <= min && max <= x2 && max <= y2) {
++        return this.keys.slice();
+ 
+-        var matrix = this.coordinatePointMatrix(this.tileZoom);
+-        mat4.invert(matrix, matrix);
++    } else {
++        var result = [];
++        var seenUids = {};
++        this._forEachCell(x1, y1, x2, y2, this._queryCell, result, seenUids);
++        return result;
++    }
++};
+ 
+-        if (!matrix) throw new Error("failed to invert matrix");
++GridIndex.prototype._queryCell = function(x1, y1, x2, y2, cellIndex, result, seenUids) {
++    var cell = this.cells[cellIndex];
++    if (cell !== null) {
++        var keys = this.keys;
++        var bboxes = this.bboxes;
++        for (var u = 0; u < cell.length; u++) {
++            var uid = cell[u];
++            if (seenUids[uid] === undefined) {
++                var offset = uid * 4;
++                if ((x1 <= bboxes[offset + 2]) &&
++                    (y1 <= bboxes[offset + 3]) &&
++                    (x2 >= bboxes[offset + 0]) &&
++                    (y2 >= bboxes[offset + 1])) {
++                    seenUids[uid] = true;
++                    result.push(keys[uid]);
++                } else {
++                    seenUids[uid] = false;
++                }
++            }
++        }
++    }
++};
+ 
+-        // since we don't know the correct projected z value for the point,
+-        // unproject two points to get a line and then find the point on that
+-        // line with z=0
++GridIndex.prototype._forEachCell = function(x1, y1, x2, y2, fn, arg1, arg2) {
++    var cx1 = this._convertToCellCoord(x1);
++    var cy1 = this._convertToCellCoord(y1);
++    var cx2 = this._convertToCellCoord(x2);
++    var cy2 = this._convertToCellCoord(y2);
++    for (var x = cx1; x <= cx2; x++) {
++        for (var y = cy1; y <= cy2; y++) {
++            var cellIndex = this.d * y + x;
++            if (fn.call(this, x1, y1, x2, y2, cellIndex, arg1, arg2)) return;
++        }
++    }
++};
+ 
+-        var coord0 = [p.x, p.y, 0, 1];
+-        var coord1 = [p.x, p.y, 1, 1];
++GridIndex.prototype._convertToCellCoord = function(x) {
++    return Math.max(0, Math.min(this.d - 1, Math.floor(x * this.scale) + this.padding));
++};
+ 
+-        vec4.transformMat4(coord0, coord0, matrix);
+-        vec4.transformMat4(coord1, coord1, matrix);
++GridIndex.prototype.toArrayBuffer = function() {
++    if (this.arrayBuffer) return this.arrayBuffer;
+ 
+-        var w0 = coord0[3];
+-        var w1 = coord1[3];
+-        var x0 = coord0[0] / w0;
+-        var x1 = coord1[0] / w1;
+-        var y0 = coord0[1] / w0;
+-        var y1 = coord1[1] / w1;
+-        var z0 = coord0[2] / w0;
+-        var z1 = coord1[2] / w1;
++    var cells = this.cells;
+ 
++    var metadataLength = NUM_PARAMS + this.cells.length + 1 + 1;
++    var totalCellLength = 0;
++    for (var i = 0; i < this.cells.length; i++) {
++        totalCellLength += this.cells[i].length;
++    }
+ 
+-        var t = z0 === z1 ? 0 : (targetZ - z0) / (z1 - z0);
++    var array = new Int32Array(metadataLength + totalCellLength + this.keys.length + this.bboxes.length);
++    array[0] = this.extent;
++    array[1] = this.n;
++    array[2] = this.padding;
+ 
+-        return new Coordinate(
+-            interp(x0, x1, t),
+-            interp(y0, y1, t),
+-            this.tileZoom);
+-    },
++    var offset = metadataLength;
++    for (var k = 0; k < cells.length; k++) {
++        var cell = cells[k];
++        array[NUM_PARAMS + k] = offset;
++        array.set(cell, offset);
++        offset += cell.length;
++    }
+ 
+-    /**
+-     * Given a coordinate, return the screen point that corresponds to it
+-     * @param {Coordinate} coord
+-     * @returns {Point} screen point
+-     * @private
+-     */
+-    coordinatePoint: function(coord) {
+-        var matrix = this.coordinatePointMatrix(coord.zoom);
+-        var p = [coord.column, coord.row, 0, 1];
+-        vec4.transformMat4(p, p, matrix);
+-        return new Point(p[0] / p[3], p[1] / p[3]);
+-    },
++    array[NUM_PARAMS + cells.length] = offset;
++    array.set(this.keys, offset);
++    offset += this.keys.length;
+ 
+-    coordinatePointMatrix: function(z) {
+-        var proj = mat4.copy(new Float64Array(16), this.projMatrix);
+-        var scale = this.worldSize / this.zoomScale(z);
+-        mat4.scale(proj, proj, [scale, scale, 1]);
+-        mat4.multiply(proj, this.getPixelMatrix(), proj);
+-        return proj;
+-    },
++    array[NUM_PARAMS + cells.length + 1] = offset;
++    array.set(this.bboxes, offset);
++    offset += this.bboxes.length;
+ 
+-    /**
+-     * converts gl coordinates -1..1 to pixels 0..width
+-     * @returns {Object} matrix
+-     * @private
+-     */
+-    getPixelMatrix: function() {
+-        var m = mat4.create();
+-        mat4.scale(m, m, [this.width / 2, -this.height / 2, 1]);
+-        mat4.translate(m, m, [1, -1, 0]);
+-        return m;
+-    },
++    return array.buffer;
++};
+ 
+-    /**
+-     * Calculate the posMatrix that, given a tile coordinate, would be used to display the tile on a map.
+-     * @param {TileCoord|Coordinate} coord
+-     * @param {Number} maxZoom maximum source zoom to account for overscaling
+-     * @private
+-     */
+-    calculatePosMatrix: function(coord, maxZoom) {
+-        if (maxZoom === undefined) maxZoom = Infinity;
+-        if (coord instanceof TileCoord) coord = coord.toCoordinate(maxZoom);
++},{}],223:[function(require,module,exports){
++exports.read = function (buffer, offset, isLE, mLen, nBytes) {
++  var e, m
++  var eLen = nBytes * 8 - mLen - 1
++  var eMax = (1 << eLen) - 1
++  var eBias = eMax >> 1
++  var nBits = -7
++  var i = isLE ? (nBytes - 1) : 0
++  var d = isLE ? -1 : 1
++  var s = buffer[offset + i]
+ 
+-        // Initialize model-view matrix that converts from the tile coordinates to screen coordinates.
++  i += d
+ 
+-        // if z > maxzoom then the tile is actually a overscaled maxzoom tile,
+-        // so calculate the matrix the maxzoom tile would use.
+-        var z = Math.min(coord.zoom, maxZoom);
++  e = s & ((1 << (-nBits)) - 1)
++  s >>= (-nBits)
++  nBits += eLen
++  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+ 
+-        var scale = this.worldSize / Math.pow(2, z);
+-        var posMatrix = new Float64Array(16);
++  m = e & ((1 << (-nBits)) - 1)
++  e >>= (-nBits)
++  nBits += mLen
++  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+ 
+-        mat4.identity(posMatrix);
+-        mat4.translate(posMatrix, posMatrix, [coord.column * scale, coord.row * scale, 0]);
+-        mat4.scale(posMatrix, posMatrix, [ scale / EXTENT, scale / EXTENT, 1 ]);
+-        mat4.multiply(posMatrix, this.projMatrix, posMatrix);
++  if (e === 0) {
++    e = 1 - eBias
++  } else if (e === eMax) {
++    return m ? NaN : ((s ? -1 : 1) * Infinity)
++  } else {
++    m = m + Math.pow(2, mLen)
++    e = e - eBias
++  }
++  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
++}
+ 
+-        return new Float32Array(posMatrix);
+-    },
++exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
++  var e, m, c
++  var eLen = nBytes * 8 - mLen - 1
++  var eMax = (1 << eLen) - 1
++  var eBias = eMax >> 1
++  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
++  var i = isLE ? 0 : (nBytes - 1)
++  var d = isLE ? 1 : -1
++  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+ 
+-    _constrain: function() {
+-        if (!this.center || !this.width || !this.height || this._constraining) return;
++  value = Math.abs(value)
+ 
+-        this._constraining = true;
++  if (isNaN(value) || value === Infinity) {
++    m = isNaN(value) ? 1 : 0
++    e = eMax
++  } else {
++    e = Math.floor(Math.log(value) / Math.LN2)
++    if (value * (c = Math.pow(2, -e)) < 1) {
++      e--
++      c *= 2
++    }
++    if (e + eBias >= 1) {
++      value += rt / c
++    } else {
++      value += rt * Math.pow(2, 1 - eBias)
++    }
++    if (value * c >= 2) {
++      e++
++      c /= 2
++    }
+ 
+-        var minY, maxY, minX, maxX, sy, sx, x2, y2,
+-            size = this.size,
+-            unmodified = this._unmodified;
++    if (e + eBias >= eMax) {
++      m = 0
++      e = eMax
++    } else if (e + eBias >= 1) {
++      m = (value * c - 1) * Math.pow(2, mLen)
++      e = e + eBias
++    } else {
++      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
++      e = 0
++    }
++  }
+ 
+-        if (this.latRange) {
+-            minY = this.latY(this.latRange[1]);
+-            maxY = this.latY(this.latRange[0]);
+-            sy = maxY - minY < size.y ? size.y / (maxY - minY) : 0;
+-        }
++  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+ 
+-        if (this.lngRange) {
+-            minX = this.lngX(this.lngRange[0]);
+-            maxX = this.lngX(this.lngRange[1]);
+-            sx = maxX - minX < size.x ? size.x / (maxX - minX) : 0;
+-        }
++  e = (e << mLen) | m
++  eLen += mLen
++  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+ 
+-        // how much the map should scale to fit the screen into given latitude/longitude ranges
+-        var s = Math.max(sx || 0, sy || 0);
++  buffer[offset + i - d] |= s * 128
++}
+ 
+-        if (s) {
+-            this.center = this.unproject(new Point(
+-                sx ? (maxX + minX) / 2 : this.x,
+-                sy ? (maxY + minY) / 2 : this.y));
+-            this.zoom += this.scaleZoom(s);
+-            this._unmodified = unmodified;
+-            this._constraining = false;
+-            return;
+-        }
++},{}],224:[function(require,module,exports){
++"use strict"
+ 
+-        if (this.latRange) {
+-            var y = this.y,
+-                h2 = size.y / 2;
++//High level idea:
++// 1. Use Clarkson's incremental construction to find convex hull
++// 2. Point location in triangulation by jump and walk
+ 
+-            if (y - h2 < minY) y2 = minY + h2;
+-            if (y + h2 > maxY) y2 = maxY - h2;
+-        }
++module.exports = incrementalConvexHull
+ 
+-        if (this.lngRange) {
+-            var x = this.x,
+-                w2 = size.x / 2;
++var orient = require("robust-orientation")
++var compareCell = require("simplicial-complex").compareCells
+ 
+-            if (x - w2 < minX) x2 = minX + w2;
+-            if (x + w2 > maxX) x2 = maxX - w2;
+-        }
++function compareInt(a, b) {
++  return a - b
++}
+ 
+-        // pan the map if the screen goes off the range
+-        if (x2 !== undefined || y2 !== undefined) {
+-            this.center = this.unproject(new Point(
+-                x2 !== undefined ? x2 : this.x,
+-                y2 !== undefined ? y2 : this.y));
+-        }
++function Simplex(vertices, adjacent, boundary) {
++  this.vertices = vertices
++  this.adjacent = adjacent
++  this.boundary = boundary
++  this.lastVisited = -1
++}
+ 
+-        this._unmodified = unmodified;
+-        this._constraining = false;
+-    },
++Simplex.prototype.flip = function() {
++  var t = this.vertices[0]
++  this.vertices[0] = this.vertices[1]
++  this.vertices[1] = t
++  var u = this.adjacent[0]
++  this.adjacent[0] = this.adjacent[1]
++  this.adjacent[1] = u
++}
+ 
+-    _calcProjMatrix: function() {
+-        var m = new Float64Array(16);
++function GlueFacet(vertices, cell, index) {
++  this.vertices = vertices
++  this.cell = cell
++  this.index = index
++}
+ 
+-        // Find the distance from the center point to the center top in altitude units using law of sines.
+-        var halfFov = Math.atan(0.5 / this.altitude);
+-        var topHalfSurfaceDistance = Math.sin(halfFov) * this.altitude / Math.sin(Math.PI / 2 - this._pitch - halfFov);
++function compareGlue(a, b) {
++  return compareCell(a.vertices, b.vertices)
++}
+ 
+-        // Calculate z value of the farthest fragment that should be rendered.
+-        var farZ = Math.cos(Math.PI / 2 - this._pitch) * topHalfSurfaceDistance + this.altitude;
++function bakeOrient(d) {
++  var code = ["function orient(){var tuple=this.tuple;return test("]
++  for(var i=0; i<=d; ++i) {
++    if(i > 0) {
++      code.push(",")
++    }
++    code.push("tuple[", i, "]")
++  }
++  code.push(")}return orient")
++  var proc = new Function("test", code.join(""))
++  var test = orient[d+1]
++  if(!test) {
++    test = orient
++  }
++  return proc(test)
++}
+ 
+-        mat4.perspective(m, 2 * Math.atan((this.height / 2) / this.altitude), this.width / this.height, 0.1, farZ);
++var BAKED = []
+ 
+-        mat4.translate(m, m, [0, 0, -this.altitude]);
++function Triangulation(dimension, vertices, simplices) {
++  this.dimension = dimension
++  this.vertices = vertices
++  this.simplices = simplices
++  this.interior = simplices.filter(function(c) {
++    return !c.boundary
++  })
+ 
+-        // After the rotateX, z values are in pixel units. Convert them to
+-        // altitude units. 1 altitude unit = the screen height.
+-        mat4.scale(m, m, [1, -1, 1 / this.height]);
++  this.tuple = new Array(dimension+1)
++  for(var i=0; i<=dimension; ++i) {
++    this.tuple[i] = this.vertices[i]
++  }
+ 
+-        mat4.rotateX(m, m, this._pitch);
+-        mat4.rotateZ(m, m, this.angle);
+-        mat4.translate(m, m, [-this.x, -this.y, 0]);
++  var o = BAKED[dimension]
++  if(!o) {
++    o = BAKED[dimension] = bakeOrient(dimension)
++  }
++  this.orient = o
++}
+ 
+-        this.projMatrix = m;
+-    }
+-};
++var proto = Triangulation.prototype
+ 
+-},{"../data/bucket":247,"../source/tile_coord":281,"../util/interpolate":343,"../util/util":349,"./coordinate":255,"./lng_lat":256,"gl-matrix":363,"point-geometry":404}],259:[function(require,module,exports){
+-'use strict';
++//Degenerate situation where we are on boundary, but coplanar to face
++proto.handleBoundaryDegeneracy = function(cell, point) {
++  var d = this.dimension
++  var n = this.vertices.length - 1
++  var tuple = this.tuple
++  var verts = this.vertices
+ 
+-// Font data From Hershey Simplex Font
+-// http://paulbourke.net/dataformats/hershey/
+-var simplexFont = {
+-    " ": [16, []],
+-    "!": [10, [5, 21, 5, 7, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
+-    "\"": [16, [4, 21, 4, 14, -1, -1, 12, 21, 12, 14]],
+-    "#": [21, [11, 25, 4, -7, -1, -1, 17, 25, 10, -7, -1, -1, 4, 12, 18, 12, -1, -1, 3, 6, 17, 6]],
+-    "$": [20, [8, 25, 8, -4, -1, -1, 12, 25, 12, -4, -1, -1, 17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
+-    "%": [24, [21, 21, 3, 0, -1, -1, 8, 21, 10, 19, 10, 17, 9, 15, 7, 14, 5, 14, 3, 16, 3, 18, 4, 20, 6, 21, 8, 21, 10, 20, 13, 19, 16, 19, 19, 20, 21, 21, -1, -1, 17, 7, 15, 6, 14, 4, 14, 2, 16, 0, 18, 0, 20, 1, 21, 3, 21, 5, 19, 7, 17, 7]],
+-    "&": [26, [23, 12, 23, 13, 22, 14, 21, 14, 20, 13, 19, 11, 17, 6, 15, 3, 13, 1, 11, 0, 7, 0, 5, 1, 4, 2, 3, 4, 3, 6, 4, 8, 5, 9, 12, 13, 13, 14, 14, 16, 14, 18, 13, 20, 11, 21, 9, 20, 8, 18, 8, 16, 9, 13, 11, 10, 16, 3, 18, 1, 20, 0, 22, 0, 23, 1, 23, 2]],
+-    "'": [10, [5, 19, 4, 20, 5, 21, 6, 20, 6, 18, 5, 16, 4, 15]],
+-    "(": [14, [11, 25, 9, 23, 7, 20, 5, 16, 4, 11, 4, 7, 5, 2, 7, -2, 9, -5, 11, -7]],
+-    ")": [14, [3, 25, 5, 23, 7, 20, 9, 16, 10, 11, 10, 7, 9, 2, 7, -2, 5, -5, 3, -7]],
+-    "*": [16, [8, 21, 8, 9, -1, -1, 3, 18, 13, 12, -1, -1, 13, 18, 3, 12]],
+-    "+": [26, [13, 18, 13, 0, -1, -1, 4, 9, 22, 9]],
+-    ",": [10, [6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
+-    "-": [26, [4, 9, 22, 9]],
+-    ".": [10, [5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
+-    "/": [22, [20, 25, 2, -7]],
+-    "0": [20, [9, 21, 6, 20, 4, 17, 3, 12, 3, 9, 4, 4, 6, 1, 9, 0, 11, 0, 14, 1, 16, 4, 17, 9, 17, 12, 16, 17, 14, 20, 11, 21, 9, 21]],
+-    "1": [20, [6, 17, 8, 18, 11, 21, 11, 0]],
+-    "2": [20, [4, 16, 4, 17, 5, 19, 6, 20, 8, 21, 12, 21, 14, 20, 15, 19, 16, 17, 16, 15, 15, 13, 13, 10, 3, 0, 17, 0]],
+-    "3": [20, [5, 21, 16, 21, 10, 13, 13, 13, 15, 12, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
+-    "4": [20, [13, 21, 3, 7, 18, 7, -1, -1, 13, 21, 13, 0]],
+-    "5": [20, [15, 21, 5, 21, 4, 12, 5, 13, 8, 14, 11, 14, 14, 13, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
+-    "6": [20, [16, 18, 15, 20, 12, 21, 10, 21, 7, 20, 5, 17, 4, 12, 4, 7, 5, 3, 7, 1, 10, 0, 11, 0, 14, 1, 16, 3, 17, 6, 17, 7, 16, 10, 14, 12, 11, 13, 10, 13, 7, 12, 5, 10, 4, 7]],
+-    "7": [20, [17, 21, 7, 0, -1, -1, 3, 21, 17, 21]],
+-    "8": [20, [8, 21, 5, 20, 4, 18, 4, 16, 5, 14, 7, 13, 11, 12, 14, 11, 16, 9, 17, 7, 17, 4, 16, 2, 15, 1, 12, 0, 8, 0, 5, 1, 4, 2, 3, 4, 3, 7, 4, 9, 6, 11, 9, 12, 13, 13, 15, 14, 16, 16, 16, 18, 15, 20, 12, 21, 8, 21]],
+-    "9": [20, [16, 14, 15, 11, 13, 9, 10, 8, 9, 8, 6, 9, 4, 11, 3, 14, 3, 15, 4, 18, 6, 20, 9, 21, 10, 21, 13, 20, 15, 18, 16, 14, 16, 9, 15, 4, 13, 1, 10, 0, 8, 0, 5, 1, 4, 3]],
+-    ":": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
+-    ";": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
+-    "<": [24, [20, 18, 4, 9, 20, 0]],
+-    "=": [26, [4, 12, 22, 12, -1, -1, 4, 6, 22, 6]],
+-    ">": [24, [4, 18, 20, 9, 4, 0]],
+-    "?": [18, [3, 16, 3, 17, 4, 19, 5, 20, 7, 21, 11, 21, 13, 20, 14, 19, 15, 17, 15, 15, 14, 13, 13, 12, 9, 10, 9, 7, -1, -1, 9, 2, 8, 1, 9, 0, 10, 1, 9, 2]],
+-    "@": [27, [18, 13, 17, 15, 15, 16, 12, 16, 10, 15, 9, 14, 8, 11, 8, 8, 9, 6, 11, 5, 14, 5, 16, 6, 17, 8, -1, -1, 12, 16, 10, 14, 9, 11, 9, 8, 10, 6, 11, 5, -1, -1, 18, 16, 17, 8, 17, 6, 19, 5, 21, 5, 23, 7, 24, 10, 24, 12, 23, 15, 22, 17, 20, 19, 18, 20, 15, 21, 12, 21, 9, 20, 7, 19, 5, 17, 4, 15, 3, 12, 3, 9, 4, 6, 5, 4, 7, 2, 9, 1, 12, 0, 15, 0, 18, 1, 20, 2, 21, 3, -1, -1, 19, 16, 18, 8, 18, 6, 19, 5]],
+-    "A": [18, [9, 21, 1, 0, -1, -1, 9, 21, 17, 0, -1, -1, 4, 7, 14, 7]],
+-    "B": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, -1, -1, 4, 11, 13, 11, 16, 10, 17, 9, 18, 7, 18, 4, 17, 2, 16, 1, 13, 0, 4, 0]],
+-    "C": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5]],
+-    "D": [21, [4, 21, 4, 0, -1, -1, 4, 21, 11, 21, 14, 20, 16, 18, 17, 16, 18, 13, 18, 8, 17, 5, 16, 3, 14, 1, 11, 0, 4, 0]],
+-    "E": [19, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11, -1, -1, 4, 0, 17, 0]],
+-    "F": [18, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11]],
+-    "G": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 18, 8, -1, -1, 13, 8, 18, 8]],
+-    "H": [22, [4, 21, 4, 0, -1, -1, 18, 21, 18, 0, -1, -1, 4, 11, 18, 11]],
+-    "I": [8, [4, 21, 4, 0]],
+-    "J": [16, [12, 21, 12, 5, 11, 2, 10, 1, 8, 0, 6, 0, 4, 1, 3, 2, 2, 5, 2, 7]],
+-    "K": [21, [4, 21, 4, 0, -1, -1, 18, 21, 4, 7, -1, -1, 9, 12, 18, 0]],
+-    "L": [17, [4, 21, 4, 0, -1, -1, 4, 0, 16, 0]],
+-    "M": [24, [4, 21, 4, 0, -1, -1, 4, 21, 12, 0, -1, -1, 20, 21, 12, 0, -1, -1, 20, 21, 20, 0]],
+-    "N": [22, [4, 21, 4, 0, -1, -1, 4, 21, 18, 0, -1, -1, 18, 21, 18, 0]],
+-    "O": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21]],
+-    "P": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 14, 17, 12, 16, 11, 13, 10, 4, 10]],
+-    "Q": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21, -1, -1, 12, 4, 18, -2]],
+-    "R": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, 4, 11, -1, -1, 11, 11, 18, 0]],
+-    "S": [20, [17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
+-    "T": [16, [8, 21, 8, 0, -1, -1, 1, 21, 15, 21]],
+-    "U": [22, [4, 21, 4, 6, 5, 3, 7, 1, 10, 0, 12, 0, 15, 1, 17, 3, 18, 6, 18, 21]],
+-    "V": [18, [1, 21, 9, 0, -1, -1, 17, 21, 9, 0]],
+-    "W": [24, [2, 21, 7, 0, -1, -1, 12, 21, 7, 0, -1, -1, 12, 21, 17, 0, -1, -1, 22, 21, 17, 0]],
+-    "X": [20, [3, 21, 17, 0, -1, -1, 17, 21, 3, 0]],
+-    "Y": [18, [1, 21, 9, 11, 9, 0, -1, -1, 17, 21, 9, 11]],
+-    "Z": [20, [17, 21, 3, 0, -1, -1, 3, 21, 17, 21, -1, -1, 3, 0, 17, 0]],
+-    "[": [14, [4, 25, 4, -7, -1, -1, 5, 25, 5, -7, -1, -1, 4, 25, 11, 25, -1, -1, 4, -7, 11, -7]],
+-    "\\": [14, [0, 21, 14, -3]],
+-    "]": [14, [9, 25, 9, -7, -1, -1, 10, 25, 10, -7, -1, -1, 3, 25, 10, 25, -1, -1, 3, -7, 10, -7]],
+-    "^": [16, [6, 15, 8, 18, 10, 15, -1, -1, 3, 12, 8, 17, 13, 12, -1, -1, 8, 17, 8, 0]],
+-    "_": [16, [0, -2, 16, -2]],
+-    "`": [10, [6, 21, 5, 20, 4, 18, 4, 16, 5, 15, 6, 16, 5, 17]],
+-    "a": [19, [15, 14, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "b": [19, [4, 21, 4, 0, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
+-    "c": [18, [15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "d": [19, [15, 21, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "e": [18, [3, 8, 15, 8, 15, 10, 14, 12, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "f": [12, [10, 21, 8, 21, 6, 20, 5, 17, 5, 0, -1, -1, 2, 14, 9, 14]],
+-    "g": [19, [15, 14, 15, -2, 14, -5, 13, -6, 11, -7, 8, -7, 6, -6, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "h": [19, [4, 21, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
+-    "i": [8, [3, 21, 4, 20, 5, 21, 4, 22, 3, 21, -1, -1, 4, 14, 4, 0]],
+-    "j": [10, [5, 21, 6, 20, 7, 21, 6, 22, 5, 21, -1, -1, 6, 14, 6, -3, 5, -6, 3, -7, 1, -7]],
+-    "k": [17, [4, 21, 4, 0, -1, -1, 14, 14, 4, 4, -1, -1, 8, 8, 15, 0]],
+-    "l": [8, [4, 21, 4, 0]],
+-    "m": [30, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0, -1, -1, 15, 10, 18, 13, 20, 14, 23, 14, 25, 13, 26, 10, 26, 0]],
+-    "n": [19, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
+-    "o": [19, [8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3, 16, 6, 16, 8, 15, 11, 13, 13, 11, 14, 8, 14]],
+-    "p": [19, [4, 14, 4, -7, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
+-    "q": [19, [15, 14, 15, -7, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
+-    "r": [13, [4, 14, 4, 0, -1, -1, 4, 8, 5, 11, 7, 13, 9, 14, 12, 14]],
+-    "s": [17, [14, 11, 13, 13, 10, 14, 7, 14, 4, 13, 3, 11, 4, 9, 6, 8, 11, 7, 13, 6, 14, 4, 14, 3, 13, 1, 10, 0, 7, 0, 4, 1, 3, 3]],
+-    "t": [12, [5, 21, 5, 4, 6, 1, 8, 0, 10, 0, -1, -1, 2, 14, 9, 14]],
+-    "u": [19, [4, 14, 4, 4, 5, 1, 7, 0, 10, 0, 12, 1, 15, 4, -1, -1, 15, 14, 15, 0]],
+-    "v": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0]],
+-    "w": [22, [3, 14, 7, 0, -1, -1, 11, 14, 7, 0, -1, -1, 11, 14, 15, 0, -1, -1, 19, 14, 15, 0]],
+-    "x": [17, [3, 14, 14, 0, -1, -1, 14, 14, 3, 0]],
+-    "y": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0, 6, -4, 4, -6, 2, -7, 1, -7]],
+-    "z": [17, [14, 14, 3, 0, -1, -1, 3, 14, 14, 14, -1, -1, 3, 0, 14, 0]],
+-    "{": [14, [9, 25, 7, 24, 6, 23, 5, 21, 5, 19, 6, 17, 7, 16, 8, 14, 8, 12, 6, 10, -1, -1, 7, 24, 6, 22, 6, 20, 7, 18, 8, 17, 9, 15, 9, 13, 8, 11, 4, 9, 8, 7, 9, 5, 9, 3, 8, 1, 7, 0, 6, -2, 6, -4, 7, -6, -1, -1, 6, 8, 8, 6, 8, 4, 7, 2, 6, 1, 5, -1, 5, -3, 6, -5, 7, -6, 9, -7]],
+-    "|": [8, [4, 25, 4, -7]],
+-    "}": [14, [5, 25, 7, 24, 8, 23, 9, 21, 9, 19, 8, 17, 7, 16, 6, 14, 6, 12, 8, 10, -1, -1, 7, 24, 8, 22, 8, 20, 7, 18, 6, 17, 5, 15, 5, 13, 6, 11, 10, 9, 6, 7, 5, 5, 5, 3, 6, 1, 7, 0, 8, -2, 8, -4, 7, -6, -1, -1, 8, 8, 6, 6, 6, 4, 7, 2, 8, 1, 9, -1, 9, -3, 8, -5, 7, -6, 5, -7]],
+-    "~": [24, [3, 6, 3, 8, 4, 11, 6, 12, 8, 12, 10, 11, 14, 8, 16, 7, 18, 7, 20, 8, 21, 10, -1, -1, 3, 8, 4, 10, 6, 11, 8, 11, 10, 10, 14, 7, 16, 6, 18, 6, 20, 7, 21, 10, 21, 12]]
+-};
++  //Dumb solution: Just do dfs from boundary cell until we find any peak, or terminate
++  var toVisit = [ cell ]
++  cell.lastVisited = -n
++  while(toVisit.length > 0) {
++    cell = toVisit.pop()
++    var cellVerts = cell.vertices
++    var cellAdj = cell.adjacent
++    for(var i=0; i<=d; ++i) {
++      var neighbor = cellAdj[i]
++      if(!neighbor.boundary || neighbor.lastVisited <= -n) {
++        continue
++      }
++      var nv = neighbor.vertices
++      for(var j=0; j<=d; ++j) {
++        var vv = nv[j]
++        if(vv < 0) {
++          tuple[j] = point
++        } else {
++          tuple[j] = verts[vv]
++        }
++      }
++      var o = this.orient()
++      if(o > 0) {
++        return neighbor
++      }
++      neighbor.lastVisited = -n
++      if(o === 0) {
++        toVisit.push(neighbor)
++      }
++    }
++  }
++  return null
++}
+ 
+-module.exports = function textVertices(text, left, baseline, scale) {
+-    scale = scale || 1;
++proto.walk = function(point, random) {
++  //Alias local properties
++  var n = this.vertices.length - 1
++  var d = this.dimension
++  var verts = this.vertices
++  var tuple = this.tuple
+ 
+-    var strokes = [],
+-        i, len, j, len2, glyph, x, y, prev;
++  //Compute initial jump cell
++  var initIndex = random ? (this.interior.length * Math.random())|0 : (this.interior.length-1)
++  var cell = this.interior[ initIndex ]
+ 
+-    for (i = 0, len = text.length; i < len; i++) {
+-        glyph = simplexFont[text[i]];
+-        if (!glyph) continue;
+-        prev = null;
++  //Start walking
++outerLoop:
++  while(!cell.boundary) {
++    var cellVerts = cell.vertices
++    var cellAdj = cell.adjacent
+ 
+-        for (j = 0, len2 = glyph[1].length; j < len2; j += 2) {
+-            if (glyph[1][j] === -1 && glyph[1][j + 1] === -1) {
+-                prev = null;
++    for(var i=0; i<=d; ++i) {
++      tuple[i] = verts[cellVerts[i]]
++    }
++    cell.lastVisited = n
+ 
+-            } else {
+-                x = left + glyph[1][j] * scale;
+-                y = baseline - glyph[1][j + 1] * scale;
+-                if (prev) {
+-                    strokes.push(prev.x, prev.y, x, y);
+-                }
+-                prev = {x: x, y: y};
+-            }
++    //Find farthest adjacent cell
++    for(var i=0; i<=d; ++i) {
++      var neighbor = cellAdj[i]
++      if(neighbor.lastVisited >= n) {
++        continue
++      }
++      var prev = tuple[i]
++      tuple[i] = point
++      var o = this.orient()
++      tuple[i] = prev
++      if(o < 0) {
++        cell = neighbor
++        continue outerLoop
++      } else {
++        if(!neighbor.boundary) {
++          neighbor.lastVisited = n
++        } else {
++          neighbor.lastVisited = -n
+         }
+-        left += glyph[0] * scale;
++      }
+     }
++    return
++  }
+ 
+-    return strokes;
+-};
+-
+-},{}],260:[function(require,module,exports){
+-'use strict';
++  return cell
++}
+ 
+-/**
+- * mapboxgl is a A WebGL JavaScript interactive maps library that can render
+- * [Mapbox vector tiles](https://www.mapbox.com/blog/vector-tiles/).
+- *
+- * @module mapboxgl
+- * @summary WebGL JavaScript map library
+- */
++proto.addPeaks = function(point, cell) {
++  var n = this.vertices.length - 1
++  var d = this.dimension
++  var verts = this.vertices
++  var tuple = this.tuple
++  var interior = this.interior
++  var simplices = this.simplices
+ 
+-// jshint -W079
+-var mapboxgl = module.exports = {};
++  //Walking finished at boundary, time to add peaks
++  var tovisit = [ cell ]
+ 
+-mapboxgl.Map = require('./ui/map');
+-mapboxgl.Control = require('./ui/control/control');
+-mapboxgl.Navigation = require('./ui/control/navigation');
+-mapboxgl.Geolocate = require('./ui/control/geolocate');
+-mapboxgl.Attribution = require('./ui/control/attribution');
+-mapboxgl.Popup = require('./ui/popup');
++  //Stretch initial boundary cell into a peak
++  cell.lastVisited = n
++  cell.vertices[cell.vertices.indexOf(-1)] = n
++  cell.boundary = false
++  interior.push(cell)
+ 
+-mapboxgl.GeoJSONSource = require('./source/geojson_source');
+-mapboxgl.VideoSource = require('./source/video_source');
+-mapboxgl.ImageSource = require('./source/image_source');
++  //Record a list of all new boundaries created by added peaks so we can glue them together when we are all done
++  var glueFacets = []
+ 
+-mapboxgl.Style = require('./style/style');
++  //Do a traversal of the boundary walking outward from starting peak
++  while(tovisit.length > 0) {
++    //Pop off peak and walk over adjacent cells
++    var cell = tovisit.pop()
++    var cellVerts = cell.vertices
++    var cellAdj = cell.adjacent
++    var indexOfN = cellVerts.indexOf(n)
++    if(indexOfN < 0) {
++      continue
++    }
+ 
+-mapboxgl.LngLat = require('./geo/lng_lat');
+-mapboxgl.LngLatBounds = require('./geo/lng_lat_bounds');
+-mapboxgl.Point = require('point-geometry');
++    for(var i=0; i<=d; ++i) {
++      if(i === indexOfN) {
++        continue
++      }
+ 
+-mapboxgl.Evented = require('./util/evented');
+-mapboxgl.util = require('./util/util');
++      //For each boundary neighbor of the cell
++      var neighbor = cellAdj[i]
++      if(!neighbor.boundary || neighbor.lastVisited >= n) {
++        continue
++      }
+ 
+-mapboxgl.supported = require('./util/browser').supported;
++      var nv = neighbor.vertices
+ 
+-var ajax = require('./util/ajax');
+-mapboxgl.util.getJSON = ajax.getJSON;
+-mapboxgl.util.getArrayBuffer = ajax.getArrayBuffer;
++      //Test if neighbor is a peak
++      if(neighbor.lastVisited !== -n) {      
++        //Compute orientation of p relative to each boundary peak
++        var indexOfNeg1 = 0
++        for(var j=0; j<=d; ++j) {
++          if(nv[j] < 0) {
++            indexOfNeg1 = j
++            tuple[j] = point
++          } else {
++            tuple[j] = verts[nv[j]]
++          }
++        }
++        var o = this.orient()
+ 
+-var config = require('./util/config');
+-mapboxgl.config = config;
++        //Test if neighbor cell is also a peak
++        if(o > 0) {
++          nv[indexOfNeg1] = n
++          neighbor.boundary = false
++          interior.push(neighbor)
++          tovisit.push(neighbor)
++          neighbor.lastVisited = n
++          continue
++        } else {
++          neighbor.lastVisited = -n
++        }
++      }
+ 
+-Object.defineProperty(mapboxgl, 'accessToken', {
+-    get: function() { return config.ACCESS_TOKEN; },
+-    set: function(token) { config.ACCESS_TOKEN = token; }
+-});
++      var na = neighbor.adjacent
+ 
+-},{"./geo/lng_lat":256,"./geo/lng_lat_bounds":257,"./source/geojson_source":274,"./source/image_source":276,"./source/video_source":284,"./style/style":290,"./ui/control/attribution":318,"./ui/control/control":319,"./ui/control/geolocate":320,"./ui/control/navigation":321,"./ui/map":331,"./ui/popup":332,"./util/ajax":334,"./util/browser":335,"./util/config":339,"./util/evented":341,"./util/util":349,"point-geometry":404}],261:[function(require,module,exports){
+-'use strict';
++      //Otherwise, replace neighbor with new face
++      var vverts = cellVerts.slice()
++      var vadj = cellAdj.slice()
++      var ncell = new Simplex(vverts, vadj, true)
++      simplices.push(ncell)
+ 
+-var TilePyramid = require('../source/tile_pyramid');
+-var pyramid = new TilePyramid({ tileSize: 512 });
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++      //Connect to neighbor
++      var opposite = na.indexOf(cell)
++      if(opposite < 0) {
++        continue
++      }
++      na[opposite] = ncell
++      vadj[indexOfN] = neighbor
+ 
+-module.exports = drawBackground;
++      //Connect to cell
++      vverts[i] = -1
++      vadj[i] = cell
++      cellAdj[i] = ncell
+ 
+-function drawBackground(painter, source, layer) {
+-    var gl = painter.gl;
+-    var transform = painter.transform;
+-    var color = util.premultiply(layer.paint['background-color']);
+-    var image = layer.paint['background-pattern'];
+-    var opacity = layer.paint['background-opacity'];
+-    var program;
++      //Flip facet
++      ncell.flip()
+ 
+-    var imagePosA = image ? painter.spriteAtlas.getPosition(image.from, true) : null;
+-    var imagePosB = image ? painter.spriteAtlas.getPosition(image.to, true) : null;
++      //Add to glue list
++      for(var j=0; j<=d; ++j) {
++        var uu = vverts[j]
++        if(uu < 0 || uu === n) {
++          continue
++        }
++        var nface = new Array(d-1)
++        var nptr = 0
++        for(var k=0; k<=d; ++k) {
++          var vv = vverts[k]
++          if(vv < 0 || k === j) {
++            continue
++          }
++          nface[nptr++] = vv
++        }
++        glueFacets.push(new GlueFacet(nface, ncell, j))
++      }
++    }
++  }
+ 
+-    painter.setDepthSublayer(0);
+-    if (imagePosA && imagePosB) {
++  //Glue boundary facets together
++  glueFacets.sort(compareGlue)
+ 
+-        if (painter.isOpaquePass) return;
++  for(var i=0; i+1<glueFacets.length; i+=2) {
++    var a = glueFacets[i]
++    var b = glueFacets[i+1]
++    var ai = a.index
++    var bi = b.index
++    if(ai < 0 || bi < 0) {
++      continue
++    }
++    a.cell.adjacent[a.index] = b.cell
++    b.cell.adjacent[b.index] = a.cell
++  }
++}
+ 
+-        // Draw texture fill
+-        program = painter.useProgram('pattern');
+-        gl.uniform1i(program.u_image, 0);
+-        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
+-        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
+-        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
+-        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
+-        gl.uniform1f(program.u_opacity, opacity);
++proto.insert = function(point, random) {
++  //Add point
++  var verts = this.vertices
++  verts.push(point)
+ 
+-        gl.uniform1f(program.u_mix, image.t);
++  var cell = this.walk(point, random)
++  if(!cell) {
++    return
++  }
+ 
+-        painter.spriteAtlas.bind(gl, true);
++  //Alias local properties
++  var d = this.dimension
++  var tuple = this.tuple
+ 
+-        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
++  //Degenerate case: If point is coplanar to cell, then walk until we find a non-degenerate boundary
++  for(var i=0; i<=d; ++i) {
++    var vv = cell.vertices[i]
++    if(vv < 0) {
++      tuple[i] = point
+     } else {
+-        // Draw filling rectangle.
+-        if (painter.isOpaquePass !== (color[3] === 1)) return;
+-
+-        program = painter.useProgram('fill');
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, opacity);
+-        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
++      tuple[i] = verts[vv]
+     }
++  }
++  var o = this.orient(tuple)
++  if(o < 0) {
++    return
++  } else if(o === 0) {
++    cell = this.handleBoundaryDegeneracy(cell, point)
++    if(!cell) {
++      return
++    }
++  }
+ 
+-    gl.disable(gl.STENCIL_TEST);
+-
+-    // We need to draw the background in tiles in order to use calculatePosMatrix
+-    // which applies the projection matrix (transform.projMatrix). Otherwise
+-    // the depth and stencil buffers get into a bad state.
+-    // This can be refactored into a single draw call once earcut lands and
+-    // we don't have so much going on in the stencil buffer.
+-    var coords = pyramid.coveringTiles(transform);
+-    for (var c = 0; c < coords.length; c++) {
+-        var coord = coords[c];
+-        var tileSize = 512;
+-        // var pixelsToTileUnitsBound = pixelsToTileUnits.bind({coord:coord, tileSize: tileSize});
+-        if (imagePosA && imagePosB) {
+-            var imageSizeScaledA = [
+-                (imagePosA.size[0] * image.fromScale),
+-                (imagePosA.size[1] * image.fromScale)
+-            ];
+-            var imageSizeScaledB = [
+-                (imagePosB.size[0] * image.toScale),
+-                (imagePosB.size[1] * image.toScale)
+-            ];
+-            var tile = {coord:coord, tileSize: tileSize};
++  //Add peaks
++  this.addPeaks(point, cell)
++}
+ 
+-            gl.uniform2fv(program.u_patternscale_a, [
+-                1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
+-                1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
+-            ]);
++//Extract all boundary cells
++proto.boundary = function() {
++  var d = this.dimension
++  var boundary = []
++  var cells = this.simplices
++  var nc = cells.length
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    if(c.boundary) {
++      var bcell = new Array(d)
++      var cv = c.vertices
++      var ptr = 0
++      var parity = 0
++      for(var j=0; j<=d; ++j) {
++        if(cv[j] >= 0) {
++          bcell[ptr++] = cv[j]
++        } else {
++          parity = j&1
++        }
++      }
++      if(parity === (d&1)) {
++        var t = bcell[0]
++        bcell[0] = bcell[1]
++        bcell[1] = t
++      }
++      boundary.push(bcell)
++    }
++  }
++  return boundary
++}
+ 
+-            gl.uniform2fv(program.u_patternscale_b, [
+-                1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
+-                1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
+-            ]);
+-            var tileSizeAtNearestZoom = tileSize * Math.pow(2, painter.transform.tileZoom - coord.z);
++function incrementalConvexHull(points, randomSearch) {
++  var n = points.length
++  if(n === 0) {
++    throw new Error("Must have at least d+1 points")
++  }
++  var d = points[0].length
++  if(n <= d) {
++    throw new Error("Must input at least d+1 points")
++  }
+ 
+-            var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
+-            var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * coord.y;
++  //FIXME: This could be degenerate, but need to select d+1 non-coplanar points to bootstrap process
++  var initialSimplex = points.slice(0, d+1)
+ 
+-            var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
+-            var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * coord.y;
++  //Make sure initial simplex is positively oriented
++  var o = orient.apply(void 0, initialSimplex)
++  if(o === 0) {
++    throw new Error("Input not in general position")
++  }
++  var initialCoords = new Array(d+1)
++  for(var i=0; i<=d; ++i) {
++    initialCoords[i] = i
++  }
++  if(o < 0) {
++    initialCoords[0] = 1
++    initialCoords[1] = 0
++  }
+ 
+-            gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
+-            gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
++  //Create initial topological index, glue pointers together (kind of messy)
++  var initialCell = new Simplex(initialCoords, new Array(d+1), false)
++  var boundary = initialCell.adjacent
++  var list = new Array(d+2)
++  for(var i=0; i<=d; ++i) {
++    var verts = initialCoords.slice()
++    for(var j=0; j<=d; ++j) {
++      if(j === i) {
++        verts[j] = -1
++      }
++    }
++    var t = verts[0]
++    verts[0] = verts[1]
++    verts[1] = t
++    var cell = new Simplex(verts, new Array(d+1), true)
++    boundary[i] = cell
++    list[i] = cell
++  }
++  list[d+1] = initialCell
++  for(var i=0; i<=d; ++i) {
++    var verts = boundary[i].vertices
++    var adj = boundary[i].adjacent
++    for(var j=0; j<=d; ++j) {
++      var v = verts[j]
++      if(v < 0) {
++        adj[j] = initialCell
++        continue
++      }
++      for(var k=0; k<=d; ++k) {
++        if(boundary[k].vertices.indexOf(v) < 0) {
++          adj[j] = boundary[k]
+         }
+-
+-        gl.uniformMatrix4fv(program.u_matrix, false, painter.transform.calculatePosMatrix(coord));
+-        gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
++      }
+     }
++  }
+ 
+-    gl.stencilMask(0x00);
+-    gl.stencilFunc(gl.EQUAL, 0x80, 0x80);
+-}
+-
+-},{"../source/pixels_to_tile_units":277,"../source/tile_pyramid":282,"../util/util":349}],262:[function(require,module,exports){
+-'use strict';
++  //Initialize triangles
++  var triangles = new Triangulation(d, initialSimplex, list)
+ 
+-var browser = require('../util/browser');
++  //Insert remaining points
++  var useRandom = !!randomSearch
++  for(var i=d+1; i<n; ++i) {
++    triangles.insert(points[i], useRandom)
++  }
++  
++  //Extract boundary cells
++  return triangles.boundary()
++}
++},{"robust-orientation":418,"simplicial-complex":429}],225:[function(require,module,exports){
++"use strict"
+ 
+-module.exports = drawCircles;
++var bounds = require("binary-search-bounds")
+ 
+-function drawCircles(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
++var NOT_FOUND = 0
++var SUCCESS = 1
++var EMPTY = 2
+ 
+-    var gl = painter.gl;
++module.exports = createWrapper
+ 
+-    painter.setDepthSublayer(0);
+-    painter.depthMask(false);
++function IntervalTreeNode(mid, left, right, leftPoints, rightPoints) {
++  this.mid = mid
++  this.left = left
++  this.right = right
++  this.leftPoints = leftPoints
++  this.rightPoints = rightPoints
++  this.count = (left ? left.count : 0) + (right ? right.count : 0) + leftPoints.length
++}
+ 
+-    // Allow circles to be drawn across boundaries, so that
+-    // large circles are not clipped to tiles
+-    gl.disable(gl.STENCIL_TEST);
++var proto = IntervalTreeNode.prototype
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
++function copy(a, b) {
++  a.mid = b.mid
++  a.left = b.left
++  a.right = b.right
++  a.leftPoints = b.leftPoints
++  a.rightPoints = b.rightPoints
++  a.count = b.count
++}
+ 
+-        var tile = source.getTile(coord);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bufferGroups = bucket.bufferGroups.circle;
+-        if (!bufferGroups) continue;
++function rebuild(node, intervals) {
++  var ntree = createIntervalTree(intervals)
++  node.mid = ntree.mid
++  node.left = ntree.left
++  node.right = ntree.right
++  node.leftPoints = ntree.leftPoints
++  node.rightPoints = ntree.rightPoints
++  node.count = ntree.count
++}
+ 
+-        var program = painter.useProgram('circle', bucket.getProgramMacros('circle', layer));
++function rebuildWithInterval(node, interval) {
++  var intervals = node.intervals([])
++  intervals.push(interval)
++  rebuild(node, intervals)    
++}
+ 
+-        gl.uniform2fv(program.u_extrude_scale, painter.transform.pixelsToGLUnits);
+-        gl.uniform1f(program.u_blur, layer.paint['circle-blur']);
+-        gl.uniform1f(program.u_devicepixelratio, browser.devicePixelRatio);
+-        gl.uniform1f(program.u_opacity, layer.paint['circle-opacity']);
++function rebuildWithoutInterval(node, interval) {
++  var intervals = node.intervals([])
++  var idx = intervals.indexOf(interval)
++  if(idx < 0) {
++    return NOT_FOUND
++  }
++  intervals.splice(idx, 1)
++  rebuild(node, intervals)
++  return SUCCESS
++}
+ 
+-        gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
+-            coord.posMatrix,
+-            tile,
+-            layer.paint['circle-translate'],
+-            layer.paint['circle-translate-anchor']
+-        ));
++proto.intervals = function(result) {
++  result.push.apply(result, this.leftPoints)
++  if(this.left) {
++    this.left.intervals(result)
++  }
++  if(this.right) {
++    this.right.intervals(result)
++  }
++  return result
++}
+ 
+-        bucket.setUniforms(gl, 'circle', program, layer, {zoom: painter.transform.zoom});
++proto.insert = function(interval) {
++  var weight = this.count - this.leftPoints.length
++  this.count += 1
++  if(interval[1] < this.mid) {
++    if(this.left) {
++      if(4*(this.left.count+1) > 3*(weight+1)) {
++        rebuildWithInterval(this, interval)
++      } else {
++        this.left.insert(interval)
++      }
++    } else {
++      this.left = createIntervalTree([interval])
++    }
++  } else if(interval[0] > this.mid) {
++    if(this.right) {
++      if(4*(this.right.count+1) > 3*(weight+1)) {
++        rebuildWithInterval(this, interval)
++      } else {
++        this.right.insert(interval)
++      }
++    } else {
++      this.right = createIntervalTree([interval])
++    }
++  } else {
++    var l = bounds.ge(this.leftPoints, interval, compareBegin)
++    var r = bounds.ge(this.rightPoints, interval, compareEnd)
++    this.leftPoints.splice(l, 0, interval)
++    this.rightPoints.splice(r, 0, interval)
++  }
++}
+ 
+-        for (var k = 0; k < bufferGroups.length; k++) {
+-            var group = bufferGroups[k];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element, group.paint[layer.id]);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++proto.remove = function(interval) {
++  var weight = this.count - this.leftPoints
++  if(interval[1] < this.mid) {
++    if(!this.left) {
++      return NOT_FOUND
++    }
++    var rw = this.right ? this.right.count : 0
++    if(4 * rw > 3 * (weight-1)) {
++      return rebuildWithoutInterval(this, interval)
++    }
++    var r = this.left.remove(interval)
++    if(r === EMPTY) {
++      this.left = null
++      this.count -= 1
++      return SUCCESS
++    } else if(r === SUCCESS) {
++      this.count -= 1
++    }
++    return r
++  } else if(interval[0] > this.mid) {
++    if(!this.right) {
++      return NOT_FOUND
++    }
++    var lw = this.left ? this.left.count : 0
++    if(4 * lw > 3 * (weight-1)) {
++      return rebuildWithoutInterval(this, interval)
++    }
++    var r = this.right.remove(interval)
++    if(r === EMPTY) {
++      this.right = null
++      this.count -= 1
++      return SUCCESS
++    } else if(r === SUCCESS) {
++      this.count -= 1
++    }
++    return r
++  } else {
++    if(this.count === 1) {
++      if(this.leftPoints[0] === interval) {
++        return EMPTY
++      } else {
++        return NOT_FOUND
++      }
++    }
++    if(this.leftPoints.length === 1 && this.leftPoints[0] === interval) {
++      if(this.left && this.right) {
++        var p = this
++        var n = this.left
++        while(n.right) {
++          p = n
++          n = n.right
++        }
++        if(p === this) {
++          n.right = this.right
++        } else {
++          var l = this.left
++          var r = this.right
++          p.count -= n.count
++          p.right = n.left
++          n.left = l
++          n.right = r
++        }
++        copy(this, n)
++        this.count = (this.left?this.left.count:0) + (this.right?this.right.count:0) + this.leftPoints.length
++      } else if(this.left) {
++        copy(this, this.left)
++      } else {
++        copy(this, this.right)
++      }
++      return SUCCESS
++    }
++    for(var l = bounds.ge(this.leftPoints, interval, compareBegin); l<this.leftPoints.length; ++l) {
++      if(this.leftPoints[l][0] !== interval[0]) {
++        break
++      }
++      if(this.leftPoints[l] === interval) {
++        this.count -= 1
++        this.leftPoints.splice(l, 1)
++        for(var r = bounds.ge(this.rightPoints, interval, compareEnd); r<this.rightPoints.length; ++r) {
++          if(this.rightPoints[r][1] !== interval[1]) {
++            break
++          } else if(this.rightPoints[r] === interval) {
++            this.rightPoints.splice(r, 1)
++            return SUCCESS
++          }
+         }
++      }
+     }
++    return NOT_FOUND
++  }
+ }
+ 
+-},{"../util/browser":335}],263:[function(require,module,exports){
+-'use strict';
+-
+-module.exports = drawCollisionDebug;
+-
+-function drawCollisionDebug(painter, source, layer, coords) {
+-    var gl = painter.gl;
+-    gl.enable(gl.STENCIL_TEST);
+-    var program = painter.useProgram('collisionbox');
+-
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
+-        var tile = source.getTile(coord);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bufferGroups = bucket.bufferGroups.collisionBox;
+-
+-        if (!bufferGroups || !bufferGroups.length) continue;
+-        var group = bufferGroups[0];
+-        if (group.layout.vertex.length === 0) continue;
+-
+-        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
++function reportLeftRange(arr, hi, cb) {
++  for(var i=0; i<arr.length && arr[i][0] <= hi; ++i) {
++    var r = cb(arr[i])
++    if(r) { return r }
++  }
++}
+ 
+-        painter.enableTileClippingMask(coord);
++function reportRightRange(arr, lo, cb) {
++  for(var i=arr.length-1; i>=0 && arr[i][1] >= lo; --i) {
++    var r = cb(arr[i])
++    if(r) { return r }
++  }
++}
+ 
+-        painter.lineWidth(1);
+-        gl.uniform1f(program.u_scale, Math.pow(2, painter.transform.zoom - tile.coord.z));
+-        gl.uniform1f(program.u_zoom, painter.transform.zoom * 10);
+-        gl.uniform1f(program.u_maxzoom, (tile.coord.z + 1) * 10);
++function reportRange(arr, cb) {
++  for(var i=0; i<arr.length; ++i) {
++    var r = cb(arr[i])
++    if(r) { return r }
++  }
++}
+ 
+-        group.vaos[layer.id].bind(gl, program, group.layout.vertex);
+-        gl.drawArrays(gl.LINES, 0, group.layout.vertex.length);
++proto.queryPoint = function(x, cb) {
++  if(x < this.mid) {
++    if(this.left) {
++      var r = this.left.queryPoint(x, cb)
++      if(r) { return r }
++    }
++    return reportLeftRange(this.leftPoints, x, cb)
++  } else if(x > this.mid) {
++    if(this.right) {
++      var r = this.right.queryPoint(x, cb)
++      if(r) { return r }
+     }
++    return reportRightRange(this.rightPoints, x, cb)
++  } else {
++    return reportRange(this.leftPoints, cb)
++  }
+ }
+ 
+-},{}],264:[function(require,module,exports){
+-'use strict';
+-
+-var textVertices = require('../lib/debugtext');
+-var browser = require('../util/browser');
+-var mat4 = require('gl-matrix').mat4;
+-var EXTENT = require('../data/bucket').EXTENT;
+-var Buffer = require('../data/buffer');
+-var VertexArrayObject = require('./vertex_array_object');
+-
+-module.exports = drawDebug;
+-
+-function drawDebug(painter, source, coords) {
+-    if (painter.isOpaquePass) return;
+-    if (!painter.options.debug) return;
++proto.queryInterval = function(lo, hi, cb) {
++  if(lo < this.mid && this.left) {
++    var r = this.left.queryInterval(lo, hi, cb)
++    if(r) { return r }
++  }
++  if(hi > this.mid && this.right) {
++    var r = this.right.queryInterval(lo, hi, cb)
++    if(r) { return r }
++  }
++  if(hi < this.mid) {
++    return reportLeftRange(this.leftPoints, hi, cb)
++  } else if(lo > this.mid) {
++    return reportRightRange(this.rightPoints, lo, cb)
++  } else {
++    return reportRange(this.leftPoints, cb)
++  }
++}
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        drawDebugTile(painter, source, coords[i]);
+-    }
++function compareNumbers(a, b) {
++  return a - b
+ }
+ 
+-function drawDebugTile(painter, source, coord) {
+-    var gl = painter.gl;
++function compareBegin(a, b) {
++  var d = a[0] - b[0]
++  if(d) { return d }
++  return a[1] - b[1]
++}
+ 
+-    gl.disable(gl.STENCIL_TEST);
+-    painter.lineWidth(1 * browser.devicePixelRatio);
++function compareEnd(a, b) {
++  var d = a[1] - b[1]
++  if(d) { return d }
++  return a[0] - b[0]
++}
+ 
+-    var posMatrix = coord.posMatrix;
+-    var program = painter.useProgram('debug');
++function createIntervalTree(intervals) {
++  if(intervals.length === 0) {
++    return null
++  }
++  var pts = []
++  for(var i=0; i<intervals.length; ++i) {
++    pts.push(intervals[i][0], intervals[i][1])
++  }
++  pts.sort(compareNumbers)
+ 
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+-    gl.uniform4f(program.u_color, 1, 0, 0, 1);
+-    painter.debugVAO.bind(gl, program, painter.debugBuffer);
+-    gl.drawArrays(gl.LINE_STRIP, 0, painter.debugBuffer.length);
++  var mid = pts[pts.length>>1]
+ 
+-    var vertices = textVertices(coord.toString(), 50, 200, 5);
+-    var debugTextArray = new painter.PosArray();
+-    for (var v = 0; v < vertices.length; v += 2) {
+-        debugTextArray.emplaceBack(vertices[v], vertices[v + 1]);
++  var leftIntervals = []
++  var rightIntervals = []
++  var centerIntervals = []
++  for(var i=0; i<intervals.length; ++i) {
++    var s = intervals[i]
++    if(s[1] < mid) {
++      leftIntervals.push(s)
++    } else if(mid < s[0]) {
++      rightIntervals.push(s)
++    } else {
++      centerIntervals.push(s)
+     }
+-    var debugTextBuffer = new Buffer(debugTextArray.serialize(), painter.PosArray.serialize(), Buffer.BufferType.VERTEX);
+-    var debugTextVAO = new VertexArrayObject();
+-    debugTextVAO.bind(gl, program, debugTextBuffer);
+-    gl.uniform4f(program.u_color, 1, 1, 1, 1);
++  }
+ 
+-    // Draw the halo with multiple 1px lines instead of one wider line because
+-    // the gl spec doesn't guarantee support for lines with width > 1.
+-    var tileSize = source.getTile(coord).tileSize;
+-    var onePixel = EXTENT / (Math.pow(2, painter.transform.zoom - coord.z) * tileSize);
+-    var translations = [[-1, -1], [-1, 1], [1, -1], [1, 1]];
+-    for (var i = 0; i < translations.length; i++) {
+-        var translation = translations[i];
+-        gl.uniformMatrix4fv(program.u_matrix, false, mat4.translate([], posMatrix, [onePixel * translation[0], onePixel * translation[1], 0]));
+-        gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
+-    }
++  //Split center intervals
++  var leftPoints = centerIntervals
++  var rightPoints = centerIntervals.slice()
++  leftPoints.sort(compareBegin)
++  rightPoints.sort(compareEnd)
+ 
+-    gl.uniform4f(program.u_color, 0, 0, 0, 1);
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+-    gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
++  return new IntervalTreeNode(mid, 
++    createIntervalTree(leftIntervals),
++    createIntervalTree(rightIntervals),
++    leftPoints,
++    rightPoints)
+ }
+ 
+-},{"../data/bucket":247,"../data/buffer":252,"../lib/debugtext":259,"../util/browser":335,"./vertex_array_object":273,"gl-matrix":363}],265:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+-
+-module.exports = draw;
++//User friendly wrapper that makes it possible to support empty trees
++function IntervalTree(root) {
++  this.root = root
++}
+ 
+-function draw(painter, source, layer, coords) {
+-    var gl = painter.gl;
+-    gl.enable(gl.STENCIL_TEST);
++var tproto = IntervalTree.prototype
+ 
+-    var color = util.premultiply(layer.paint['fill-color']);
+-    var image = layer.paint['fill-pattern'];
+-    var strokeColor = util.premultiply(layer.paint['fill-outline-color']);
+-    var opacity = layer.paint['fill-opacity'];
++tproto.insert = function(interval) {
++  if(this.root) {
++    this.root.insert(interval)
++  } else {
++    this.root = new IntervalTreeNode(interval[0], null, null, [interval], [interval])
++  }
++}
+ 
+-    // Draw fill
+-    if (image ? !painter.isOpaquePass : painter.isOpaquePass === (color[3] === 1 && opacity === 1)) {
+-        // Once we switch to earcut drawing we can pull most of the WebGL setup
+-        // outside of this coords loop.
+-        for (var i = 0; i < coords.length; i++) {
+-            drawFill(painter, source, layer, coords[i]);
+-        }
++tproto.remove = function(interval) {
++  if(this.root) {
++    var r = this.root.remove(interval)
++    if(r === EMPTY) {
++      this.root = null
+     }
++    return r !== NOT_FOUND
++  }
++  return false
++}
+ 
+-    // Draw stroke
+-    if (!painter.isOpaquePass && layer.paint['fill-antialias']) {
+-        if (strokeColor || !layer.paint['fill-pattern']) {
+-            var outlineProgram = painter.useProgram('outline');
+-            painter.lineWidth(2);
+-            painter.depthMask(false);
+-
+-            if (strokeColor) {
+-                // If we defined a different color for the fill outline, we are
+-                // going to ignore the bits in 0x07 and just care about the global
+-                // clipping mask.
+-                painter.setDepthSublayer(2);
+-            } else {
+-                // Otherwise, we only want to drawFill the antialiased parts that are
+-                // *outside* the current shape. This is important in case the fill
+-                // or stroke color is translucent. If we wouldn't clip to outside
+-                // the current shape, some pixels from the outline stroke overlapped
+-                // the (non-antialiased) fill.
+-                painter.setDepthSublayer(0);
+-            }
+-            gl.uniform2f(outlineProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
+-            gl.uniform4fv(outlineProgram.u_color, strokeColor ? strokeColor : color);
+-            gl.uniform1f(outlineProgram.u_opacity, opacity);
++tproto.queryPoint = function(p, cb) {
++  if(this.root) {
++    return this.root.queryPoint(p, cb)
++  }
++}
+ 
+-            for (var j = 0; j < coords.length; j++) {
+-                drawStroke(painter, source, layer, coords[j]);
+-            }
+-        } else {
+-            var outlinePatternProgram = painter.useProgram('outlinepattern');
+-            painter.lineWidth(2);
+-            painter.depthMask(false);
+-            // Otherwise, we only want to drawFill the antialiased parts that are
+-            // *outside* the current shape. This is important in case the fill
+-            // or stroke color is translucent. If we wouldn't clip to outside
+-            // the current shape, some pixels from the outline stroke overlapped
+-            // the (non-antialiased) fill.
+-            painter.setDepthSublayer(0);
+-            gl.uniform2f(outlinePatternProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
++tproto.queryInterval = function(lo, hi, cb) {
++  if(lo <= hi && this.root) {
++    return this.root.queryInterval(lo, hi, cb)
++  }
++}
+ 
+-            for (var k = 0; k < coords.length; k++) {
+-                drawStroke(painter, source, layer, coords[k]);
+-            }
+-        }
++Object.defineProperty(tproto, "count", {
++  get: function() {
++    if(this.root) {
++      return this.root.count
++    }
++    return 0
++  }
++})
+ 
++Object.defineProperty(tproto, "intervals", {
++  get: function() {
++    if(this.root) {
++      return this.root.intervals([])
+     }
+-}
++    return []
++  }
++})
+ 
+-function drawFill(painter, source, layer, coord) {
+-    var tile = source.getTile(coord);
+-    var bucket = tile.getBucket(layer);
+-    if (!bucket) return;
+-    var bufferGroups = bucket.bufferGroups.fill;
+-    if (!bufferGroups) return;
++function createWrapper(intervals) {
++  if(!intervals || intervals.length === 0) {
++    return new IntervalTree(null)
++  }
++  return new IntervalTree(createIntervalTree(intervals))
++}
+ 
+-    var gl = painter.gl;
++},{"binary-search-bounds":48}],226:[function(require,module,exports){
++"use strict"
+ 
+-    var color = util.premultiply(layer.paint['fill-color']);
+-    var image = layer.paint['fill-pattern'];
+-    var opacity = layer.paint['fill-opacity'];
++function invertPermutation(pi, result) {
++  result = result || new Array(pi.length)
++  for(var i=0; i<pi.length; ++i) {
++    result[pi[i]] = i
++  }
++  return result
++}
+ 
+-    var posMatrix = coord.posMatrix;
+-    var translatedPosMatrix = painter.translatePosMatrix(posMatrix, tile, layer.paint['fill-translate'], layer.paint['fill-translate-anchor']);
++module.exports = invertPermutation
++},{}],227:[function(require,module,exports){
++"use strict"
+ 
+-    // Draw the stencil mask.
+-    painter.setDepthSublayer(1);
++function iota(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = i
++  }
++  return result
++}
+ 
+-    // We're only drawFilling to the first seven bits (== support a maximum of
+-    // 8 overlapping polygons in one place before we get rendering errors).
+-    gl.stencilMask(0x07);
+-    gl.clear(gl.STENCIL_BUFFER_BIT);
++module.exports = iota
++},{}],228:[function(require,module,exports){
++/*!
++ * Determine if an object is a Buffer
++ *
++ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
++ * @license  MIT
++ */
+ 
+-    // Draw front facing triangles. Wherever the 0x80 bit is 1, we are
+-    // increasing the lower 7 bits by one if the triangle is a front-facing
+-    // triangle. This means that all visible polygons should be in CCW
+-    // orientation, while all holes (see below) are in CW orientation.
+-    painter.enableTileClippingMask(coord);
++// The _isBuffer check is for Safari 5-7 support, because it's missing
++// Object.prototype.constructor. Remove this eventually
++module.exports = function (obj) {
++  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
++}
+ 
+-    // When we do a nonzero fill, we count the number of times a pixel is
+-    // covered by a counterclockwise polygon, and subtract the number of
+-    // times it is "uncovered" by a clockwise polygon.
+-    gl.stencilOpSeparate(gl.FRONT, gl.KEEP, gl.KEEP, gl.INCR_WRAP);
+-    gl.stencilOpSeparate(gl.BACK, gl.KEEP, gl.KEEP, gl.DECR_WRAP);
++function isBuffer (obj) {
++  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
++}
+ 
+-    // When drawFilling a shape, we first drawFill all shapes to the stencil buffer
+-    // and incrementing all areas where polygons are
+-    gl.colorMask(false, false, false, false);
+-    painter.depthMask(false);
++// For Node v0.10 support. Remove this eventually.
++function isSlowBuffer (obj) {
++  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
++}
+ 
+-    // Draw the actual triangle fan into the stencil buffer.
+-    var fillProgram = painter.useProgram('fill');
+-    gl.uniformMatrix4fv(fillProgram.u_matrix, false, translatedPosMatrix);
++},{}],229:[function(require,module,exports){
++'use strict';
+ 
+-    for (var i = 0; i < bufferGroups.length; i++) {
+-        var group = bufferGroups[i];
+-        group.vaos[layer.id].bind(gl, fillProgram, group.layout.vertex, group.layout.element);
+-        gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-    }
++var sort = require('./sort');
++var range = require('./range');
++var within = require('./within');
+ 
+-    // Now that we have the stencil mask in the stencil buffer, we can start
+-    // writing to the color buffer.
+-    gl.colorMask(true, true, true, true);
+-    painter.depthMask(true);
++module.exports = kdbush;
+ 
+-    // From now on, we don't want to update the stencil buffer anymore.
+-    gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
+-    gl.stencilMask(0x0);
+-    var program;
++function kdbush(points, getX, getY, nodeSize, ArrayType) {
++    return new KDBush(points, getX, getY, nodeSize, ArrayType);
++}
+ 
+-    if (image) {
+-        // Draw texture fill
+-        program = painter.useProgram('pattern');
+-        setPattern(image, opacity, tile, coord, painter, program);
++function KDBush(points, getX, getY, nodeSize, ArrayType) {
++    getX = getX || defaultGetX;
++    getY = getY || defaultGetY;
++    ArrayType = ArrayType || Array;
+ 
+-        gl.activeTexture(gl.TEXTURE0);
+-        painter.spriteAtlas.bind(gl, true);
++    this.nodeSize = nodeSize || 64;
++    this.points = points;
+ 
+-        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
++    this.ids = new ArrayType(points.length);
++    this.coords = new ArrayType(points.length * 2);
+ 
+-    } else {
+-        // Draw filling rectangle.
+-        program = painter.useProgram('fill');
+-        gl.uniform4fv(fillProgram.u_color, color);
+-        gl.uniform1f(fillProgram.u_opacity, opacity);
+-        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
++    for (var i = 0; i < points.length; i++) {
++        this.ids[i] = i;
++        this.coords[2 * i] = getX(points[i]);
++        this.coords[2 * i + 1] = getY(points[i]);
+     }
+ 
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+-
+-    // Only draw regions that we marked
+-    gl.stencilFunc(gl.NOTEQUAL, 0x0, 0x07);
+-
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
+-
+-    gl.stencilMask(0x00);
++    sort(this.ids, this.coords, this.nodeSize, 0, this.ids.length - 1, 0);
+ }
+ 
+-function drawStroke(painter, source, layer, coord) {
+-    var tile = source.getTile(coord);
+-    var bucket = tile.getBucket(layer);
+-    if (!bucket) return;
+-
+-    var gl = painter.gl;
+-    var bufferGroups = bucket.bufferGroups.fill;
+-
+-    var image = layer.paint['fill-pattern'];
+-    var opacity = layer.paint['fill-opacity'];
+-    var program = image ? painter.useProgram('outlinepattern') : painter.useProgram('outline');
+-
+-    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
+-        coord.posMatrix,
+-        tile,
+-        layer.paint['fill-translate'],
+-        layer.paint['fill-translate-anchor']
+-    ));
+-
+-    if (image) { setPattern(image, opacity, tile, coord, painter, program); }
+-
+-    painter.enableTileClippingMask(coord);
++KDBush.prototype = {
++    range: function (minX, minY, maxX, maxY) {
++        return range(this.ids, this.coords, minX, minY, maxX, maxY, this.nodeSize);
++    },
+ 
+-    for (var k = 0; k < bufferGroups.length; k++) {
+-        var group = bufferGroups[k];
+-        group.secondVaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element2);
+-        gl.drawElements(gl.LINES, group.layout.element2.length * 2, gl.UNSIGNED_SHORT, 0);
++    within: function (x, y, r) {
++        return within(this.ids, this.coords, x, y, r, this.nodeSize);
+     }
+-}
+-
++};
+ 
+-function setPattern(image, opacity, tile, coord, painter, program) {
+-    var gl = painter.gl;
++function defaultGetX(p) { return p[0]; }
++function defaultGetY(p) { return p[1]; }
+ 
+-    var imagePosA = painter.spriteAtlas.getPosition(image.from, true);
+-    var imagePosB = painter.spriteAtlas.getPosition(image.to, true);
+-    if (!imagePosA || !imagePosB) return;
++},{"./range":230,"./sort":231,"./within":232}],230:[function(require,module,exports){
++'use strict';
+ 
++module.exports = range;
+ 
+-    gl.uniform1i(program.u_image, 0);
+-    gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
+-    gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
+-    gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
+-    gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
+-    gl.uniform1f(program.u_opacity, opacity);
+-    gl.uniform1f(program.u_mix, image.t);
++function range(ids, coords, minX, minY, maxX, maxY, nodeSize) {
++    var stack = [0, ids.length - 1, 0];
++    var result = [];
++    var x, y;
+ 
+-    var imageSizeScaledA = [
+-        (imagePosA.size[0] * image.fromScale),
+-        (imagePosA.size[1] * image.fromScale)
+-    ];
+-    var imageSizeScaledB = [
+-        (imagePosB.size[0] * image.toScale),
+-        (imagePosB.size[1] * image.toScale)
+-    ];
++    while (stack.length) {
++        var axis = stack.pop();
++        var right = stack.pop();
++        var left = stack.pop();
+ 
+-    gl.uniform2fv(program.u_patternscale_a, [
+-        1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
+-        1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
+-    ]);
++        if (right - left <= nodeSize) {
++            for (var i = left; i <= right; i++) {
++                x = coords[2 * i];
++                y = coords[2 * i + 1];
++                if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[i]);
++            }
++            continue;
++        }
+ 
+-    gl.uniform2fv(program.u_patternscale_b, [
+-        1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
+-        1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
+-    ]);
++        var m = Math.floor((left + right) / 2);
+ 
+-    var tileSizeAtNearestZoom = tile.tileSize * Math.pow(2, painter.transform.tileZoom - tile.coord.z);
++        x = coords[2 * m];
++        y = coords[2 * m + 1];
+ 
+-    // shift images to match at tile boundaries
+-    var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
+-    var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * tile.coord.y;
++        if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[m]);
+ 
+-    var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
+-    var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * tile.coord.y;
++        var nextAxis = (axis + 1) % 2;
+ 
+-    gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
+-    gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
++        if (axis === 0 ? minX <= x : minY <= y) {
++            stack.push(left);
++            stack.push(m - 1);
++            stack.push(nextAxis);
++        }
++        if (axis === 0 ? maxX >= x : maxY >= y) {
++            stack.push(m + 1);
++            stack.push(right);
++            stack.push(nextAxis);
++        }
++    }
+ 
+-    gl.activeTexture(gl.TEXTURE0);
+-    painter.spriteAtlas.bind(gl, true);
++    return result;
+ }
+ 
+-},{"../source/pixels_to_tile_units":277,"../util/util":349}],266:[function(require,module,exports){
++},{}],231:[function(require,module,exports){
+ 'use strict';
+ 
+-var browser = require('../util/browser');
+-var mat2 = require('gl-matrix').mat2;
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++module.exports = sortKD;
+ 
+-/**
+- * Draw a line. Under the hood this will read elements from
+- * a tile, dash textures from a lineAtlas, and style properties from a layer.
+- * @param {Object} painter
+- * @param {Object} layer
+- * @param {Object} posMatrix
+- * @param {Tile} tile
+- * @returns {undefined} draws with the painter
+- * @private
+- */
+-module.exports = function drawLine(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
+-    painter.setDepthSublayer(0);
+-    painter.depthMask(false);
++function sortKD(ids, coords, nodeSize, left, right, depth) {
++    if (right - left <= nodeSize) return;
+ 
+-    var gl = painter.gl;
+-    gl.enable(gl.STENCIL_TEST);
++    var m = Math.floor((left + right) / 2);
+ 
+-    // don't draw zero-width lines
+-    if (layer.paint['line-width'] <= 0) return;
++    select(ids, coords, m, left, right, depth % 2);
+ 
+-    // the distance over which the line edge fades out.
+-    // Retina devices need a smaller distance to avoid aliasing.
+-    var antialiasing = 1 / browser.devicePixelRatio;
++    sortKD(ids, coords, nodeSize, left, m - 1, depth + 1);
++    sortKD(ids, coords, nodeSize, m + 1, right, depth + 1);
++}
+ 
+-    var blur = layer.paint['line-blur'] + antialiasing;
+-    var edgeWidth = layer.paint['line-width'] / 2;
+-    var inset = -1;
+-    var offset = 0;
+-    var shift = 0;
++function select(ids, coords, k, left, right, inc) {
+ 
+-    if (layer.paint['line-gap-width'] > 0) {
+-        inset = layer.paint['line-gap-width'] / 2 + antialiasing * 0.5;
+-        edgeWidth = layer.paint['line-width'];
++    while (right > left) {
++        if (right - left > 600) {
++            var n = right - left + 1;
++            var m = k - left + 1;
++            var z = Math.log(n);
++            var s = 0.5 * Math.exp(2 * z / 3);
++            var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
++            var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
++            var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
++            select(ids, coords, k, newLeft, newRight, inc);
++        }
+ 
+-        // shift outer lines half a pixel towards the middle to eliminate the crack
+-        offset = inset - antialiasing / 2;
+-    }
++        var t = coords[2 * k + inc];
++        var i = left;
++        var j = right;
+ 
+-    var outset = offset + edgeWidth + antialiasing / 2 + shift;
+-    var color = util.premultiply(layer.paint['line-color']);
++        swapItem(ids, coords, left, k);
++        if (coords[2 * right + inc] > t) swapItem(ids, coords, left, right);
+ 
+-    var tr = painter.transform;
++        while (i < j) {
++            swapItem(ids, coords, i, j);
++            i++;
++            j--;
++            while (coords[2 * i + inc] < t) i++;
++            while (coords[2 * j + inc] > t) j--;
++        }
+ 
+-    var antialiasingMatrix = mat2.create();
+-    mat2.scale(antialiasingMatrix, antialiasingMatrix, [1, Math.cos(tr._pitch)]);
+-    mat2.rotate(antialiasingMatrix, antialiasingMatrix, painter.transform.angle);
++        if (coords[2 * left + inc] === t) swapItem(ids, coords, left, j);
++        else {
++            j++;
++            swapItem(ids, coords, j, right);
++        }
+ 
+-    // calculate how much longer the real world distance is at the top of the screen
+-    // than at the middle of the screen.
+-    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
+-    var x = tr.height / 2 * Math.tan(tr._pitch);
+-    var extra = (topedgelength + x) / topedgelength - 1;
++        if (j <= k) left = j + 1;
++        if (k <= j) right = j - 1;
++    }
++}
+ 
+-    var dasharray = layer.paint['line-dasharray'];
+-    var image = layer.paint['line-pattern'];
+-    var program, posA, posB, imagePosA, imagePosB;
++function swapItem(ids, coords, i, j) {
++    swap(ids, i, j);
++    swap(coords, 2 * i, 2 * j);
++    swap(coords, 2 * i + 1, 2 * j + 1);
++}
+ 
+-    if (dasharray) {
+-        program = painter.useProgram('linesdfpattern');
++function swap(arr, i, j) {
++    var tmp = arr[i];
++    arr[i] = arr[j];
++    arr[j] = tmp;
++}
+ 
+-        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
+-        gl.uniform1f(program.u_blur, blur);
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
++},{}],232:[function(require,module,exports){
++'use strict';
+ 
+-        posA = painter.lineAtlas.getDash(dasharray.from, layer.layout['line-cap'] === 'round');
+-        posB = painter.lineAtlas.getDash(dasharray.to, layer.layout['line-cap'] === 'round');
++module.exports = within;
+ 
+-        gl.uniform1i(program.u_image, 0);
+-        gl.activeTexture(gl.TEXTURE0);
+-        painter.lineAtlas.bind(gl);
++function within(ids, coords, qx, qy, r, nodeSize) {
++    var stack = [0, ids.length - 1, 0];
++    var result = [];
++    var r2 = r * r;
+ 
+-        gl.uniform1f(program.u_tex_y_a, posA.y);
+-        gl.uniform1f(program.u_tex_y_b, posB.y);
+-        gl.uniform1f(program.u_mix, dasharray.t);
+-        gl.uniform1f(program.u_extra, extra);
+-        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
+-        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
++    while (stack.length) {
++        var axis = stack.pop();
++        var right = stack.pop();
++        var left = stack.pop();
+ 
+-    } else if (image) {
+-        imagePosA = painter.spriteAtlas.getPosition(image.from, true);
+-        imagePosB = painter.spriteAtlas.getPosition(image.to, true);
+-        if (!imagePosA || !imagePosB) return;
++        if (right - left <= nodeSize) {
++            for (var i = left; i <= right; i++) {
++                if (sqDist(coords[2 * i], coords[2 * i + 1], qx, qy) <= r2) result.push(ids[i]);
++            }
++            continue;
++        }
+ 
+-        program = painter.useProgram('linepattern');
++        var m = Math.floor((left + right) / 2);
+ 
+-        gl.uniform1i(program.u_image, 0);
+-        gl.activeTexture(gl.TEXTURE0);
+-        painter.spriteAtlas.bind(gl, true);
++        var x = coords[2 * m];
++        var y = coords[2 * m + 1];
+ 
+-        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
+-        gl.uniform1f(program.u_blur, blur);
+-        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
+-        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
+-        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
+-        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
+-        gl.uniform1f(program.u_fade, image.t);
+-        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
+-        gl.uniform1f(program.u_extra, extra);
+-        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
+-        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
++        if (sqDist(x, y, qx, qy) <= r2) result.push(ids[m]);
+ 
+-    } else {
+-        program = painter.useProgram('line');
++        var nextAxis = (axis + 1) % 2;
+ 
+-        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
+-        gl.uniform1f(program.u_blur, blur);
+-        gl.uniform1f(program.u_extra, extra);
+-        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
+-        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
++        if (axis === 0 ? qx - r <= x : qy - r <= y) {
++            stack.push(left);
++            stack.push(m - 1);
++            stack.push(nextAxis);
++        }
++        if (axis === 0 ? qx + r >= x : qy + r >= y) {
++            stack.push(m + 1);
++            stack.push(right);
++            stack.push(nextAxis);
++        }
+     }
+ 
+-    for (var k = 0; k < coords.length; k++) {
+-        var coord = coords[k];
+-        var tile = source.getTile(coord);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bufferGroups = bucket.bufferGroups.line;
+-        if (!bufferGroups) continue;
++    return result;
++}
+ 
+-        painter.enableTileClippingMask(coord);
++function sqDist(ax, ay, bx, by) {
++    var dx = ax - bx;
++    var dy = ay - by;
++    return dx * dx + dy * dy;
++}
+ 
+-        // set uniforms that are different for each tile
+-        var posMatrix = painter.translatePosMatrix(coord.posMatrix, tile, layer.paint['line-translate'], layer.paint['line-translate-anchor']);
+-        gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++},{}],233:[function(require,module,exports){
++'use strict';
+ 
+-        var ratio = 1 / pixelsToTileUnits(tile, 1, painter.transform.zoom);
++function createFunction(parameters, defaultType) {
++    var fun;
+ 
+-        if (dasharray) {
+-            var widthA = posA.width * dasharray.fromScale;
+-            var widthB = posB.width * dasharray.toScale;
+-            var scaleA = [1 / pixelsToTileUnits(tile, widthA, painter.transform.tileZoom), -posA.height / 2];
+-            var scaleB = [1 / pixelsToTileUnits(tile, widthB, painter.transform.tileZoom), -posB.height / 2];
+-            var gamma = painter.lineAtlas.width / (Math.min(widthA, widthB) * 256 * browser.devicePixelRatio) / 2;
+-            gl.uniform1f(program.u_ratio, ratio);
+-            gl.uniform2fv(program.u_patternscale_a, scaleA);
+-            gl.uniform2fv(program.u_patternscale_b, scaleB);
+-            gl.uniform1f(program.u_sdfgamma, gamma);
++    if (!isFunctionDefinition(parameters)) {
++        fun = function() { return parameters; };
++        fun.isFeatureConstant = true;
++        fun.isZoomConstant = true;
+ 
+-        } else if (image) {
+-            gl.uniform1f(program.u_ratio, ratio);
+-            gl.uniform2fv(program.u_pattern_size_a, [
+-                pixelsToTileUnits(tile, imagePosA.size[0] * image.fromScale, painter.transform.tileZoom),
+-                imagePosB.size[1]
+-            ]);
+-            gl.uniform2fv(program.u_pattern_size_b, [
+-                pixelsToTileUnits(tile, imagePosB.size[0] * image.toScale, painter.transform.tileZoom),
+-                imagePosB.size[1]
+-            ]);
++    } else {
++        var zoomAndFeatureDependent = typeof parameters.stops[0][0] === 'object';
++        var featureDependent = zoomAndFeatureDependent || parameters.property !== undefined;
++        var zoomDependent = zoomAndFeatureDependent || !featureDependent;
++        var type = parameters.type || defaultType || 'exponential';
+ 
++        var innerFun;
++        if (type === 'exponential') {
++            innerFun = evaluateExponentialFunction;
++        } else if (type === 'interval') {
++            innerFun = evaluateIntervalFunction;
++        } else if (type === 'categorical') {
++            innerFun = evaluateCategoricalFunction;
+         } else {
+-            gl.uniform1f(program.u_ratio, ratio);
++            throw new Error('Unknown function type "' + type + '"');
+         }
+ 
+-        for (var i = 0; i < bufferGroups.length; i++) {
+-            var group = bufferGroups[i];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++        if (zoomAndFeatureDependent) {
++            var featureFunctions = {};
++            var featureFunctionStops = [];
++            for (var s = 0; s < parameters.stops.length; s++) {
++                var stop = parameters.stops[s];
++                if (featureFunctions[stop[0].zoom] === undefined) {
++                    featureFunctions[stop[0].zoom] = {
++                        zoom: stop[0].zoom,
++                        type: parameters.type,
++                        property: parameters.property,
++                        stops: []
++                    };
++                }
++                featureFunctions[stop[0].zoom].stops.push([stop[0].value, stop[1]]);
++            }
++
++            for (var z in featureFunctions) {
++                featureFunctionStops.push([featureFunctions[z].zoom, createFunction(featureFunctions[z])]);
++            }
++            fun = function(zoom, feature) {
++                return evaluateExponentialFunction({ stops: featureFunctionStops, base: parameters.base }, zoom)(zoom, feature);
++            };
++            fun.isFeatureConstant = false;
++            fun.isZoomConstant = false;
++
++        } else if (zoomDependent) {
++            fun = function(zoom) {
++                return innerFun(parameters, zoom);
++            };
++            fun.isFeatureConstant = true;
++            fun.isZoomConstant = false;
++        } else {
++            fun = function(zoom, feature) {
++                return innerFun(parameters, feature[parameters.property]);
++            };
++            fun.isFeatureConstant = false;
++            fun.isZoomConstant = true;
+         }
+     }
+ 
+-};
++    return fun;
++}
+ 
+-},{"../source/pixels_to_tile_units":277,"../util/browser":335,"../util/util":349,"gl-matrix":363}],267:[function(require,module,exports){
+-'use strict';
++function evaluateCategoricalFunction(parameters, input) {
++    for (var i = 0; i < parameters.stops.length; i++) {
++        if (input === parameters.stops[i][0]) {
++            return parameters.stops[i][1];
++        }
++    }
++    return parameters.stops[0][1];
++}
+ 
+-var util = require('../util/util');
+-var StructArrayType = require('../util/struct_array');
++function evaluateIntervalFunction(parameters, input) {
++    for (var i = 0; i < parameters.stops.length; i++) {
++        if (input < parameters.stops[i][0]) break;
++    }
++    return parameters.stops[Math.max(i - 1, 0)][1];
++}
+ 
+-module.exports = drawRaster;
++function evaluateExponentialFunction(parameters, input) {
++    var base = parameters.base !== undefined ? parameters.base : 1;
+ 
+-function drawRaster(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
++    var i = 0;
++    while (true) {
++        if (i >= parameters.stops.length) break;
++        else if (input <= parameters.stops[i][0]) break;
++        else i++;
++    }
+ 
+-    var gl = painter.gl;
++    if (i === 0) {
++        return parameters.stops[i][1];
+ 
+-    gl.enable(gl.DEPTH_TEST);
+-    painter.depthMask(true);
++    } else if (i === parameters.stops.length) {
++        return parameters.stops[i - 1][1];
+ 
+-    // Change depth function to prevent double drawing in areas where tiles overlap.
+-    gl.depthFunc(gl.LESS);
++    } else {
++        return interpolate(
++            input,
++            base,
++            parameters.stops[i - 1][0],
++            parameters.stops[i][0],
++            parameters.stops[i - 1][1],
++            parameters.stops[i][1]
++        );
++    }
++}
+ 
+-    var minTileZ = coords.length && coords[0].z;
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
+-        // set the lower zoom level to sublayer 0, and higher zoom levels to higher sublayers
+-        painter.setDepthSublayer(coord.z - minTileZ);
+-        drawRasterTile(painter, source, layer, coord);
++function interpolate(input, base, inputLower, inputUpper, outputLower, outputUpper) {
++    if (typeof outputLower === 'function') {
++        return function() {
++            var evaluatedLower = outputLower.apply(undefined, arguments);
++            var evaluatedUpper = outputUpper.apply(undefined, arguments);
++            return interpolate(input, base, inputLower, inputUpper, evaluatedLower, evaluatedUpper);
++        };
++    } else if (outputLower.length) {
++        return interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper);
++    } else {
++        return interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper);
+     }
+-
+-    gl.depthFunc(gl.LEQUAL);
+ }
+ 
+-drawRaster.RasterBoundsArray = new StructArrayType({
+-    members: [
+-        { name: 'a_pos', type: 'Int16', components: 2 },
+-        { name: 'a_texture_pos', type: 'Int16', components: 2 }
+-    ]
+-});
++function interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper) {
++    var difference =  inputUpper - inputLower;
++    var progress = input - inputLower;
+ 
+-function drawRasterTile(painter, source, layer, coord) {
++    var ratio;
++    if (base === 1) {
++        ratio = progress / difference;
++    } else {
++        ratio = (Math.pow(base, progress) - 1) / (Math.pow(base, difference) - 1);
++    }
+ 
+-    var gl = painter.gl;
++    return (outputLower * (1 - ratio)) + (outputUpper * ratio);
++}
+ 
+-    gl.disable(gl.STENCIL_TEST);
++function interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper) {
++    var output = [];
++    for (var i = 0; i < outputLower.length; i++) {
++        output[i] = interpolateNumber(input, base, inputLower, inputUpper, outputLower[i], outputUpper[i]);
++    }
++    return output;
++}
+ 
+-    var tile = source.getTile(coord);
+-    var posMatrix = painter.transform.calculatePosMatrix(coord, source.maxzoom);
++function isFunctionDefinition(value) {
++    return typeof value === 'object' && value.stops;
++}
+ 
+-    var program = painter.useProgram('raster');
+-    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+ 
+-    // color parameters
+-    gl.uniform1f(program.u_brightness_low, layer.paint['raster-brightness-min']);
+-    gl.uniform1f(program.u_brightness_high, layer.paint['raster-brightness-max']);
+-    gl.uniform1f(program.u_saturation_factor, saturationFactor(layer.paint['raster-saturation']));
+-    gl.uniform1f(program.u_contrast_factor, contrastFactor(layer.paint['raster-contrast']));
+-    gl.uniform3fv(program.u_spin_weights, spinWeights(layer.paint['raster-hue-rotate']));
++module.exports.isFunctionDefinition = isFunctionDefinition;
+ 
+-    var parentTile = tile.source && tile.source._pyramid.findLoadedParent(coord, 0, {}),
+-        opacities = getOpacities(tile, parentTile, layer, painter.transform);
++module.exports.interpolated = function(parameters) {
++    return createFunction(parameters, 'exponential');
++};
+ 
+-    var parentScaleBy, parentTL;
++module.exports['piecewise-constant'] = function(parameters) {
++    return createFunction(parameters, 'interval');
++};
+ 
+-    gl.activeTexture(gl.TEXTURE0);
+-    gl.bindTexture(gl.TEXTURE_2D, tile.texture);
++},{}],234:[function(require,module,exports){
++'use strict';
+ 
+-    if (parentTile) {
+-        gl.activeTexture(gl.TEXTURE1);
+-        gl.bindTexture(gl.TEXTURE_2D, parentTile.texture);
++if (typeof module !== 'undefined' && module.exports) {
++    module.exports = isSupported;
++} else if (window) {
++    window.mapboxgl = window.mapboxgl || {};
++    window.mapboxgl.supported = isSupported;
++}
+ 
+-        parentScaleBy = Math.pow(2, parentTile.coord.z - tile.coord.z);
+-        parentTL = [tile.coord.x * parentScaleBy % 1, tile.coord.y * parentScaleBy % 1];
+-    } else {
+-        opacities[1] = 0;
+-    }
++/**
++ * Test whether the current browser supports Mapbox GL JS
++ * @param {Object} options
++ * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
++ *   if the performance of Mapbox GL JS would be dramatically worse than
++ *   expected (i.e. a software renderer is would be used)
++ * @return {boolean}
++ */
++function isSupported(options) {
++    return !!(
++        isBrowser() &&
++        isArraySupported() &&
++        isFunctionSupported() &&
++        isObjectSupported() &&
++        isJSONSupported() &&
++        isWorkerSupported() &&
++        isWebGLSupportedCached(options && options.failIfMajorPerformanceCaveat)
++    );
++}
+ 
+-    // cross-fade parameters
+-    gl.uniform2fv(program.u_tl_parent, parentTL || [0, 0]);
+-    gl.uniform1f(program.u_scale_parent, parentScaleBy || 1);
+-    gl.uniform1f(program.u_buffer_scale, 1);
+-    gl.uniform1f(program.u_opacity0, opacities[0]);
+-    gl.uniform1f(program.u_opacity1, opacities[1]);
+-    gl.uniform1i(program.u_image0, 0);
+-    gl.uniform1i(program.u_image1, 1);
++function isBrowser() {
++    return typeof window !== 'undefined' && typeof document !== 'undefined';
++}
+ 
+-    var buffer = tile.boundsBuffer || painter.rasterBoundsBuffer;
+-    var vao = tile.boundsVAO || painter.rasterBoundsVAO;
+-    vao.bind(gl, program, buffer);
+-    gl.drawArrays(gl.TRIANGLE_STRIP, 0, buffer.length);
++function isArraySupported() {
++    return (
++        Array.prototype &&
++        Array.prototype.every &&
++        Array.prototype.filter &&
++        Array.prototype.forEach &&
++        Array.prototype.indexOf &&
++        Array.prototype.lastIndexOf &&
++        Array.prototype.map &&
++        Array.prototype.some &&
++        Array.prototype.reduce &&
++        Array.prototype.reduceRight &&
++        Array.isArray
++    );
+ }
+ 
+-function spinWeights(angle) {
+-    angle *= Math.PI / 180;
+-    var s = Math.sin(angle);
+-    var c = Math.cos(angle);
+-    return [
+-        (2 * c + 1) / 3,
+-        (-Math.sqrt(3) * s - c + 1) / 3,
+-        (Math.sqrt(3) * s - c + 1) / 3
+-    ];
++function isFunctionSupported() {
++    return Function.prototype && Function.prototype.bind;
++}
++
++function isObjectSupported() {
++    return (
++        Object.keys &&
++        Object.create &&
++        Object.getPrototypeOf &&
++        Object.getOwnPropertyNames &&
++        Object.isSealed &&
++        Object.isFrozen &&
++        Object.isExtensible &&
++        Object.getOwnPropertyDescriptor &&
++        Object.defineProperty &&
++        Object.defineProperties &&
++        Object.seal &&
++        Object.freeze &&
++        Object.preventExtensions
++    );
+ }
+ 
+-function contrastFactor(contrast) {
+-    return contrast > 0 ?
+-        1 / (1 - contrast) :
+-        1 + contrast;
++function isJSONSupported() {
++    return 'JSON' in window && 'parse' in JSON && 'stringify' in JSON;
+ }
+ 
+-function saturationFactor(saturation) {
+-    return saturation > 0 ?
+-        1 - 1 / (1.001 - saturation) :
+-        -saturation;
++function isWorkerSupported() {
++    return 'Worker' in window;
+ }
+ 
+-function getOpacities(tile, parentTile, layer, transform) {
+-    var opacity = [1, 0];
+-    var fadeDuration = layer.paint['raster-fade-duration'];
+-
+-    if (tile.source && fadeDuration > 0) {
+-        var now = new Date().getTime();
+-
+-        var sinceTile = (now - tile.timeAdded) / fadeDuration;
+-        var sinceParent = parentTile ? (now - parentTile.timeAdded) / fadeDuration : -1;
+-
+-        var idealZ = tile.source._pyramid.coveringZoomLevel(transform);
+-        var parentFurther = parentTile ? Math.abs(parentTile.coord.z - idealZ) > Math.abs(tile.coord.z - idealZ) : false;
++var isWebGLSupportedCache = {};
++function isWebGLSupportedCached(failIfMajorPerformanceCaveat) {
+ 
+-        if (!parentTile || parentFurther) {
+-            // if no parent or parent is older
+-            opacity[0] = util.clamp(sinceTile, 0, 1);
+-            opacity[1] = 1 - opacity[0];
+-        } else {
+-            // parent is younger, zooming out
+-            opacity[0] = util.clamp(1 - sinceParent, 0, 1);
+-            opacity[1] = 1 - opacity[0];
+-        }
++    if (isWebGLSupportedCache[failIfMajorPerformanceCaveat] === undefined) {
++        isWebGLSupportedCache[failIfMajorPerformanceCaveat] = isWebGLSupported(failIfMajorPerformanceCaveat);
+     }
+ 
+-    var op = layer.paint['raster-opacity'];
+-    opacity[0] *= op;
+-    opacity[1] *= op;
+-
+-    return opacity;
++    return isWebGLSupportedCache[failIfMajorPerformanceCaveat];
+ }
+ 
+-},{"../util/struct_array":347,"../util/util":349}],268:[function(require,module,exports){
+-'use strict';
+-
+-var browser = require('../util/browser');
+-var drawCollisionDebug = require('./draw_collision_debug');
+-var util = require('../util/util');
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++isSupported.webGLContextAttributes = {
++    antialias: false,
++    alpha: true,
++    stencil: true,
++    depth: true
++};
+ 
++function isWebGLSupported(failIfMajorPerformanceCaveat) {
+ 
+-module.exports = drawSymbols;
++    var canvas = document.createElement('canvas');
+ 
+-function drawSymbols(painter, source, layer, coords) {
+-    if (painter.isOpaquePass) return;
++    var attributes = Object.create(isSupported.webGLContextAttributes);
++    attributes.failIfMajorPerformanceCaveat = failIfMajorPerformanceCaveat;
+ 
+-    var drawAcrossEdges = !(layer.layout['text-allow-overlap'] || layer.layout['icon-allow-overlap'] ||
+-        layer.layout['text-ignore-placement'] || layer.layout['icon-ignore-placement']);
++    if (canvas.probablySupportsContext) {
++        return (
++            canvas.probablySupportsContext('webgl', attributes) ||
++            canvas.probablySupportsContext('experimental-webgl', attributes)
++        );
+ 
+-    var gl = painter.gl;
++    } else if (canvas.supportsContext) {
++        return (
++            canvas.supportsContext('webgl', attributes) ||
++            canvas.supportsContext('experimental-webgl', attributes)
++        );
+ 
+-    // Disable the stencil test so that labels aren't clipped to tile boundaries.
+-    //
+-    // Layers with features that may be drawn overlapping aren't clipped. These
+-    // layers are sorted in the y direction, and to draw the correct ordering near
+-    // tile edges the icons are included in both tiles and clipped when drawing.
+-    if (drawAcrossEdges) {
+-        gl.disable(gl.STENCIL_TEST);
+     } else {
+-        gl.enable(gl.STENCIL_TEST);
++        return (
++            canvas.getContext('webgl', attributes) ||
++            canvas.getContext('experimental-webgl', attributes)
++        );
+     }
+-
+-    painter.setDepthSublayer(0);
+-    painter.depthMask(false);
+-    gl.disable(gl.DEPTH_TEST);
+-
+-    drawLayerSymbols(painter, source, layer, coords, false,
+-            layer.paint['icon-translate'],
+-            layer.paint['icon-translate-anchor'],
+-            layer.layout['icon-rotation-alignment'],
+-            layer.layout['icon-size'],
+-            layer.paint['icon-halo-width'],
+-            layer.paint['icon-halo-color'],
+-            layer.paint['icon-halo-blur'],
+-            layer.paint['icon-opacity'],
+-            layer.paint['icon-color']);
+-
+-    drawLayerSymbols(painter, source, layer, coords, true,
+-            layer.paint['text-translate'],
+-            layer.paint['text-translate-anchor'],
+-            layer.layout['text-rotation-alignment'],
+-            layer.layout['text-size'],
+-            layer.paint['text-halo-width'],
+-            layer.paint['text-halo-color'],
+-            layer.paint['text-halo-blur'],
+-            layer.paint['text-opacity'],
+-            layer.paint['text-color']);
+-
+-    gl.enable(gl.DEPTH_TEST);
+-
+-    drawCollisionDebug(painter, source, layer, coords);
+ }
+ 
+-function drawLayerSymbols(painter, source, layer, coords, isText,
+-        translate,
+-        translateAnchor,
+-        rotationAlignment,
+-        size,
+-        haloWidth,
+-        haloColor,
+-        haloBlur,
+-        opacity,
+-        color) {
++},{}],235:[function(require,module,exports){
++'use strict';
+ 
+-    haloColor = util.premultiply(haloColor);
+-    color = util.premultiply(color);
++var format = require('util').format;
+ 
+-    for (var j = 0; j < coords.length; j++) {
+-        var tile = source.getTile(coords[j]);
+-        var bucket = tile.getBucket(layer);
+-        if (!bucket) continue;
+-        var bothBufferGroups = bucket.bufferGroups;
+-        var bufferGroups = isText ? bothBufferGroups.glyph : bothBufferGroups.icon;
+-        if (!bufferGroups.length) continue;
++function ValidationError(key, value /*, message, ...*/) {
++    this.message = (
++        (key ? key + ': ' : '') +
++        format.apply(format, Array.prototype.slice.call(arguments, 2))
++    );
+ 
+-        painter.enableTileClippingMask(coords[j]);
+-        drawSymbol(painter, layer, coords[j].posMatrix, tile, bucket, bufferGroups, isText,
+-                isText || bucket.sdfIcons, !isText && bucket.iconsNeedLinear,
+-                isText ? bucket.adjustedTextSize : bucket.adjustedIconSize, bucket.fontstack,
+-                translate,
+-                translateAnchor,
+-                rotationAlignment,
+-                size,
+-                haloWidth,
+-                haloColor,
+-                haloBlur,
+-                opacity,
+-                color);
++    if (value !== null && value !== undefined && value.__line__) {
++        this.line = value.__line__;
+     }
+ }
+ 
+-function drawSymbol(painter, layer, posMatrix, tile, bucket, bufferGroups, isText, sdf, iconsNeedLinear, adjustedSize, fontstack,
+-        translate,
+-        translateAnchor,
+-        rotationAlignment,
+-        size,
+-        haloWidth,
+-        haloColor,
+-        haloBlur,
+-        opacity,
+-        color) {
+-    var gl = painter.gl;
+-    var tr = painter.transform;
+-    var alignedWithMap = rotationAlignment === 'map';
++module.exports = ValidationError;
+ 
+-    var defaultSize = isText ? 24 : 1;
+-    var fontScale = size / defaultSize;
++},{"util":455}],236:[function(require,module,exports){
++'use strict';
+ 
+-    var extrudeScale, s, gammaScale;
+-    if (alignedWithMap) {
+-        s = pixelsToTileUnits(tile, 1, painter.transform.zoom) * fontScale;
+-        gammaScale = 1 / Math.cos(tr._pitch);
+-        extrudeScale = [s, s];
+-    } else {
+-        s = painter.transform.altitude * fontScale;
+-        gammaScale = 1;
+-        extrudeScale = [ tr.pixelsToGLUnits[0] * s, tr.pixelsToGLUnits[1] * s];
++module.exports = function (output) {
++    for (var i = 1; i < arguments.length; i++) {
++        var input = arguments[i];
++        for (var k in input) {
++            output[k] = input[k];
++        }
+     }
++    return output;
++};
+ 
+-    // calculate how much longer the real world distance is at the top of the screen
+-    // than at the middle of the screen.
+-    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
+-    var x = tr.height / 2 * Math.tan(tr._pitch);
+-    var extra = (topedgelength + x) / topedgelength - 1;
+-
+-    if (!isText && !painter.style.sprite.loaded())
+-        return;
+-
+-    var program = painter.useProgram(sdf ? 'sdf' : 'icon');
+-    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(posMatrix, tile, translate, translateAnchor));
+-    gl.uniform1i(program.u_skewed, alignedWithMap);
+-    gl.uniform1f(program.u_extra, extra);
+-    gl.uniform2fv(program.u_extrude_scale, extrudeScale);
+-
+-    gl.activeTexture(gl.TEXTURE0);
+-    gl.uniform1i(program.u_texture, 0);
+-
+-    if (isText) {
+-        // use the fonstack used when parsing the tile, not the fontstack
+-        // at the current zoom level (layout['text-font']).
+-        var glyphAtlas = fontstack && painter.glyphSource.getGlyphAtlas(fontstack);
+-        if (!glyphAtlas) return;
++},{}],237:[function(require,module,exports){
++'use strict';
+ 
+-        glyphAtlas.updateTexture(gl);
+-        gl.uniform2f(program.u_texsize, glyphAtlas.width / 4, glyphAtlas.height / 4);
++module.exports = function getType(val) {
++    if (val instanceof Number) {
++        return 'number';
++    } else if (val instanceof String) {
++        return 'string';
++    } else if (val instanceof Boolean) {
++        return 'boolean';
++    } else if (Array.isArray(val)) {
++        return 'array';
++    } else if (val === null) {
++        return 'null';
+     } else {
+-        var mapMoving = painter.options.rotating || painter.options.zooming;
+-        var iconScaled = fontScale !== 1 || browser.devicePixelRatio !== painter.spriteAtlas.pixelRatio || iconsNeedLinear;
+-        var iconTransformed = alignedWithMap || painter.transform.pitch;
+-        painter.spriteAtlas.bind(gl, sdf || mapMoving || iconScaled || iconTransformed);
+-        gl.uniform2f(program.u_texsize, painter.spriteAtlas.width / 4, painter.spriteAtlas.height / 4);
++        return typeof val;
+     }
++};
+ 
+-    // adjust min/max zooms for variable font sizes
+-    var zoomAdjust = Math.log(size / adjustedSize) / Math.LN2 || 0;
+-    gl.uniform1f(program.u_zoom, (painter.transform.zoom - zoomAdjust) * 10); // current zoom level
+-
+-    gl.activeTexture(gl.TEXTURE1);
+-    painter.frameHistory.bind(gl);
+-    gl.uniform1i(program.u_fadetexture, 1);
+-
+-    var group;
+-
+-    if (sdf) {
+-        var sdfPx = 8;
+-        var blurOffset = 1.19;
+-        var haloOffset = 6;
+-        var gamma = 0.105 * defaultSize / size / browser.devicePixelRatio;
+-
+-        if (haloWidth) {
+-            // Draw halo underneath the text.
+-            gl.uniform1f(program.u_gamma, (haloBlur * blurOffset / fontScale / sdfPx + gamma) * gammaScale);
+-            gl.uniform4fv(program.u_color, haloColor);
+-            gl.uniform1f(program.u_opacity, opacity);
+-            gl.uniform1f(program.u_buffer, (haloOffset - haloWidth / fontScale) / sdfPx);
+-
+-            for (var j = 0; j < bufferGroups.length; j++) {
+-                group = bufferGroups[j];
+-                group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-                gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-            }
+-        }
+-
+-        gl.uniform1f(program.u_gamma, gamma * gammaScale);
+-        gl.uniform4fv(program.u_color, color);
+-        gl.uniform1f(program.u_opacity, opacity);
+-        gl.uniform1f(program.u_buffer, (256 - 64) / 256);
+-
+-        for (var i = 0; i < bufferGroups.length; i++) {
+-            group = bufferGroups[i];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-        }
++},{}],238:[function(require,module,exports){
++'use strict';
+ 
++// Turn jsonlint-lines-primitives objects into primitive objects
++module.exports = function unbundle(value) {
++    if (value instanceof Number || value instanceof String || value instanceof Boolean) {
++        return value.valueOf();
+     } else {
+-        gl.uniform1f(program.u_opacity, opacity);
+-        for (var k = 0; k < bufferGroups.length; k++) {
+-            group = bufferGroups[k];
+-            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
+-            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+-        }
++        return value;
+     }
+-}
++};
+ 
+-},{"../source/pixels_to_tile_units":277,"../util/browser":335,"../util/util":349,"./draw_collision_debug":263}],269:[function(require,module,exports){
++},{}],239:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = FrameHistory;
+-
+-function FrameHistory() {
+-    this.changeTimes = new Float64Array(256);
+-    this.changeOpacities = new Uint8Array(256);
+-    this.opacities = new Uint8ClampedArray(256);
+-    this.array = new Uint8Array(this.opacities.buffer);
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var extend = require('../util/extend');
+ 
+-    this.fadeDuration = 300;
+-    this.previousZoom = 0;
+-    this.firstFrame = true;
+-}
++// Main recursive validation function. Tracks:
++//
++// - key: string representing location of validation in style tree. Used only
++//   for more informative error reporting.
++// - value: current value from style being evaluated. May be anything from a
++//   high level object that needs to be descended into deeper or a simple
++//   scalar value.
++// - valueSpec: current spec being evaluated. Tracks value.
+ 
+-FrameHistory.prototype.record = function(zoom) {
+-    var now = Date.now();
++module.exports = function validate(options) {
+ 
+-    if (this.firstFrame) {
+-        now = 0;
+-        this.firstFrame = false;
+-    }
++    var validateFunction = require('./validate_function');
++    var validateObject = require('./validate_object');
++    var VALIDATORS = {
++        '*': function() {
++            return [];
++        },
++        'array': require('./validate_array'),
++        'boolean': require('./validate_boolean'),
++        'number': require('./validate_number'),
++        'color': require('./validate_color'),
++        'constants': require('./validate_constants'),
++        'enum': require('./validate_enum'),
++        'filter': require('./validate_filter'),
++        'function': require('./validate_function'),
++        'layer': require('./validate_layer'),
++        'object': require('./validate_object'),
++        'source': require('./validate_source'),
++        'string': require('./validate_string')
++    };
+ 
+-    zoom = Math.floor(zoom * 10);
++    var value = options.value;
++    var valueSpec = options.valueSpec;
++    var key = options.key;
++    var styleSpec = options.styleSpec;
++    var style = options.style;
+ 
+-    var z;
+-    if (zoom < this.previousZoom) {
+-        for (z = zoom + 1; z <= this.previousZoom; z++) {
+-            this.changeTimes[z] = now;
+-            this.changeOpacities[z] = this.opacities[z];
+-        }
+-    } else {
+-        for (z = zoom; z > this.previousZoom; z--) {
+-            this.changeTimes[z] = now;
+-            this.changeOpacities[z] = this.opacities[z];
++    if (getType(value) === 'string' && value[0] === '@') {
++        if (styleSpec.$version > 7) {
++            return [new ValidationError(key, value, 'constants have been deprecated as of v8')];
+         }
+-    }
+-
+-    for (z = 0; z < 256; z++) {
+-        var timeSince = now - this.changeTimes[z];
+-        var opacityChange = timeSince / this.fadeDuration * 255;
+-        if (z <= zoom) {
+-            this.opacities[z] = this.changeOpacities[z] + opacityChange;
+-        } else {
+-            this.opacities[z] = this.changeOpacities[z] - opacityChange;
++        if (!(value in style.constants)) {
++            return [new ValidationError(key, value, 'constant "%s" not found', value)];
+         }
++        options = extend({}, options, { value: style.constants[value] });
+     }
+ 
+-    this.changed = true;
+-    this.previousZoom = zoom;
+-};
++    if (valueSpec.function && getType(value) === 'object') {
++        return validateFunction(options);
+ 
+-FrameHistory.prototype.bind = function(gl) {
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+-        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, 256, 1, 0, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
++    } else if (valueSpec.type && VALIDATORS[valueSpec.type]) {
++        return VALIDATORS[valueSpec.type](options);
+ 
+     } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        if (this.changed) {
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 256, 1, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
+-            this.changed = false;
+-        }
++        return validateObject(extend({}, options, {
++            valueSpec: valueSpec.type ? styleSpec[valueSpec.type] : valueSpec
++        }));
+     }
+ };
+ 
+-},{}],270:[function(require,module,exports){
++},{"../error/validation_error":235,"../util/extend":236,"../util/get_type":237,"./validate_array":240,"./validate_boolean":241,"./validate_color":242,"./validate_constants":243,"./validate_enum":244,"./validate_filter":245,"./validate_function":246,"./validate_layer":248,"./validate_number":250,"./validate_object":251,"./validate_source":253,"./validate_string":254}],240:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = LineAtlas;
+-
+-/**
+- * A LineAtlas lets us reuse rendered dashed lines
+- * by writing many of them to a texture and then fetching their positions
+- * using .getDash.
+- *
+- * @param {number} width
+- * @param {number} height
+- * @private
+- */
+-function LineAtlas(width, height) {
+-    this.width = width;
+-    this.height = height;
+-    this.nextRow = 0;
+-
+-    this.bytes = 4;
+-    this.data = new Uint8Array(this.width * this.height * this.bytes);
+-
+-    this.positions = {};
+-}
++var getType = require('../util/get_type');
++var validate = require('./validate');
++var ValidationError = require('../error/validation_error');
+ 
+-LineAtlas.prototype.setSprite = function(sprite) {
+-    this.sprite = sprite;
+-};
++module.exports = function validateArray(options) {
++    var array = options.value;
++    var arraySpec = options.valueSpec;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var key = options.key;
++    var validateArrayElement = options.arrayElementValidator || validate;
+ 
+-/**
+- * Get or create a dash line pattern.
+- *
+- * @param {Array<number>} dasharray
+- * @param {boolean} round whether to add circle caps in between dash segments
+- * @returns {Object} position of dash texture in { y, height, width }
+- * @private
+- */
+-LineAtlas.prototype.getDash = function(dasharray, round) {
+-    var key = dasharray.join(",") + round;
++    if (getType(array) !== 'array') {
++        return [new ValidationError(key, array, 'array expected, %s found', getType(array))];
++    }
+ 
+-    if (!this.positions[key]) {
+-        this.positions[key] = this.addDash(dasharray, round);
++    if (arraySpec.length && array.length !== arraySpec.length) {
++        return [new ValidationError(key, array, 'array length %d expected, length %d found', arraySpec.length, array.length)];
+     }
+-    return this.positions[key];
+-};
+ 
+-LineAtlas.prototype.addDash = function(dasharray, round) {
++    if (arraySpec['min-length'] && array.length < arraySpec['min-length']) {
++        return [new ValidationError(key, array, 'array length at least %d expected, length %d found', arraySpec['min-length'], array.length)];
++    }
+ 
+-    var n = round ? 7 : 0;
+-    var height = 2 * n + 1;
+-    var offset = 128;
++    var arrayElementSpec = {
++        "type": arraySpec.value
++    };
+ 
+-    if (this.nextRow + height > this.height) {
+-        console.warn('LineAtlas out of space');
+-        return null;
++    if (styleSpec.$version < 7) {
++        arrayElementSpec.function = arraySpec.function;
+     }
+ 
+-    var length = 0;
+-    for (var i = 0; i < dasharray.length; i++) {
+-        length += dasharray[i];
++    if (getType(arraySpec.value) === 'object') {
++        arrayElementSpec = arraySpec.value;
+     }
+ 
+-    var stretch = this.width / length;
+-    var halfWidth = stretch / 2;
++    var errors = [];
++    for (var i = 0; i < array.length; i++) {
++        errors = errors.concat(validateArrayElement({
++            array: array,
++            arrayIndex: i,
++            value: array[i],
++            valueSpec: arrayElementSpec,
++            style: style,
++            styleSpec: styleSpec,
++            key: key + '[' + i + ']'
++        }));
++    }
++    return errors;
++};
+ 
+-    // If dasharray has an odd length, both the first and last parts
+-    // are dashes and should be joined seamlessly.
+-    var oddLength = dasharray.length % 2 === 1;
++},{"../error/validation_error":235,"../util/get_type":237,"./validate":239}],241:[function(require,module,exports){
++'use strict';
+ 
+-    for (var y = -n; y <= n; y++) {
+-        var row = this.nextRow + n + y;
+-        var index = this.width * row;
++var getType = require('../util/get_type');
++var ValidationError = require('../error/validation_error');
+ 
+-        var left = oddLength ? -dasharray[dasharray.length - 1] : 0;
+-        var right = dasharray[0];
+-        var partIndex = 1;
++module.exports = function validateBoolean(options) {
++    var value = options.value;
++    var key = options.key;
++    var type = getType(value);
+ 
+-        for (var x = 0; x < this.width; x++) {
++    if (type !== 'boolean') {
++        return [new ValidationError(key, value, 'boolean expected, %s found', type)];
++    }
+ 
+-            while (right < x / stretch) {
+-                left = right;
+-                right = right + dasharray[partIndex];
++    return [];
++};
+ 
+-                if (oddLength && partIndex === dasharray.length - 1) {
+-                    right += dasharray[0];
+-                }
++},{"../error/validation_error":235,"../util/get_type":237}],242:[function(require,module,exports){
++'use strict';
+ 
+-                partIndex++;
+-            }
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var parseCSSColor = require('csscolorparser').parseCSSColor;
+ 
+-            var distLeft = Math.abs(x - left * stretch);
+-            var distRight = Math.abs(x - right * stretch);
+-            var dist = Math.min(distLeft, distRight);
+-            var inside = (partIndex % 2) === 1;
+-            var signedDistance;
++module.exports = function validateColor(options) {
++    var key = options.key;
++    var value = options.value;
++    var type = getType(value);
+ 
+-            if (round) {
+-                // Add circle caps
+-                var distMiddle = n ? y / n * (halfWidth + 1) : 0;
+-                if (inside) {
+-                    var distEdge = halfWidth - Math.abs(distMiddle);
+-                    signedDistance = Math.sqrt(dist * dist + distEdge * distEdge);
+-                } else {
+-                    signedDistance = halfWidth - Math.sqrt(dist * dist + distMiddle * distMiddle);
+-                }
+-            } else {
+-                signedDistance = (inside ? 1 : -1) * dist;
+-            }
++    if (type !== 'string') {
++        return [new ValidationError(key, value, 'color expected, %s found', type)];
++    }
+ 
+-            this.data[3 + (index + x) * 4] = Math.max(0, Math.min(255, signedDistance + offset));
+-        }
++    if (parseCSSColor(value) === null) {
++        return [new ValidationError(key, value, 'color expected, "%s" found', value)];
+     }
+ 
+-    var pos = {
+-        y: (this.nextRow + n + 0.5) / this.height,
+-        height: 2 * n / this.height,
+-        width: length
+-    };
++    return [];
++};
+ 
+-    this.nextRow += height;
+-    this.dirty = true;
++},{"../error/validation_error":235,"../util/get_type":237,"csscolorparser":84}],243:[function(require,module,exports){
++'use strict';
+ 
+-    return pos;
+-};
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
+ 
+-LineAtlas.prototype.bind = function(gl) {
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, this.width, this.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
++module.exports = function validateConstants(options) {
++    var key = options.key;
++    var constants = options.value;
++    var styleSpec = options.styleSpec;
+ 
++    if (styleSpec.$version > 7) {
++        if (constants) {
++            return [new ValidationError(key, constants, 'constants have been deprecated as of v8')];
++        } else {
++            return [];
++        }
+     } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        var type = getType(constants);
++        if (type !== 'object') {
++            return [new ValidationError(key, constants, 'object expected, %s found', type)];
++        }
+ 
+-        if (this.dirty) {
+-            this.dirty = false;
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
++        var errors = [];
++        for (var constantName in constants) {
++            if (constantName[0] !== '@') {
++                errors.push(new ValidationError(key + '.' + constantName, constants[constantName], 'constants must start with "@"'));
++            }
+         }
++        return errors;
+     }
++
+ };
+ 
+-},{}],271:[function(require,module,exports){
++},{"../error/validation_error":235,"../util/get_type":237}],244:[function(require,module,exports){
+ 'use strict';
+ 
+-var browser = require('../util/browser');
+-var mat4 = require('gl-matrix').mat4;
+-var FrameHistory = require('./frame_history');
+-var TilePyramid = require('../source/tile_pyramid');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+-var util = require('../util/util');
+-var StructArrayType = require('../util/struct_array');
+-var Buffer = require('../data/buffer');
+-var VertexArrayObject = require('./vertex_array_object');
+-var RasterBoundsArray = require('./draw_raster').RasterBoundsArray;
++var ValidationError = require('../error/validation_error');
++var unbundle = require('../util/unbundle_jsonlint');
+ 
+-module.exports = Painter;
++module.exports = function validateEnum(options) {
++    var key = options.key;
++    var value = options.value;
++    var valueSpec = options.valueSpec;
++    var errors = [];
+ 
+-/**
+- * Initialize a new painter object.
+- *
+- * @param {Canvas} gl an experimental-webgl drawing context
+- * @private
+- */
+-function Painter(gl, transform) {
+-    this.gl = gl;
+-    this.transform = transform;
++    if (valueSpec.values.indexOf(unbundle(value)) === -1) {
++        errors.push(new ValidationError(key, value, 'expected one of [%s], %s found', valueSpec.values.join(', '), value));
++    }
++    return errors;
++};
+ 
+-    this.reusableTextures = {};
+-    this.preFbos = {};
++},{"../error/validation_error":235,"../util/unbundle_jsonlint":238}],245:[function(require,module,exports){
++'use strict';
+ 
+-    this.frameHistory = new FrameHistory();
++var ValidationError = require('../error/validation_error');
++var validateEnum = require('./validate_enum');
++var getType = require('../util/get_type');
++var unbundle = require('../util/unbundle_jsonlint');
+ 
+-    this.setup();
++module.exports = function validateFilter(options) {
++    var value = options.value;
++    var key = options.key;
++    var styleSpec = options.styleSpec;
++    var type;
+ 
+-    // Within each layer there are multiple distinct z-planes that can be drawn to.
+-    // This is implemented using the WebGL depth buffer.
+-    this.numSublayers = TilePyramid.maxUnderzooming + TilePyramid.maxOverzooming + 1;
+-    this.depthEpsilon = 1 / Math.pow(2, 16);
++    var errors = [];
+ 
+-    this.lineWidthRange = gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE);
+-}
++    if (getType(value) !== 'array') {
++        return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
++    }
+ 
+-util.extend(Painter.prototype, require('./painter/use_program'));
++    if (value.length < 1) {
++        return [new ValidationError(key, value, 'filter array must have at least 1 element')];
++    }
+ 
+-/*
+- * Update the GL viewport, projection matrix, and transforms to compensate
+- * for a new width and height value.
+- */
+-Painter.prototype.resize = function(width, height) {
+-    var gl = this.gl;
++    errors = errors.concat(validateEnum({
++        key: key + '[0]',
++        value: value[0],
++        valueSpec: styleSpec.filter_operator,
++        style: options.style,
++        styleSpec: options.styleSpec
++    }));
+ 
+-    this.width = width * browser.devicePixelRatio;
+-    this.height = height * browser.devicePixelRatio;
+-    gl.viewport(0, 0, this.width, this.height);
++    switch (unbundle(value[0])) {
++        case '<':
++        case '<=':
++        case '>':
++        case '>=':
++            if (value.length >= 2 && value[1] == '$type') {
++                errors.push(new ValidationError(key, value, '"$type" cannot be use with operator "%s"', value[0]));
++            }
++        /* falls through */
++        case '==':
++        case '!=':
++            if (value.length != 3) {
++                errors.push(new ValidationError(key, value, 'filter array for operator "%s" must have 3 elements', value[0]));
++            }
++        /* falls through */
++        case 'in':
++        case '!in':
++            if (value.length >= 2) {
++                type = getType(value[1]);
++                if (type !== 'string') {
++                    errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
++                } else if (value[1][0] === '@') {
++                    errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
++                }
++            }
++            for (var i = 2; i < value.length; i++) {
++                type = getType(value[i]);
++                if (value[1] == '$type') {
++                    errors = errors.concat(validateEnum({
++                        key: key + '[' + i + ']',
++                        value: value[i],
++                        valueSpec: styleSpec.geometry_type,
++                        style: options.style,
++                        styleSpec: options.styleSpec
++                    }));
++                } else if (type === 'string' && value[i][0] === '@') {
++                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'filter value cannot be a constant'));
++                } else if (type !== 'string' && type !== 'number' && type !== 'boolean') {
++                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'string, number, or boolean expected, %s found', type));
++                }
++            }
++            break;
+ 
+-};
++        case 'any':
++        case 'all':
++        case 'none':
++            for (i = 1; i < value.length; i++) {
++                errors = errors.concat(validateFilter({
++                    key: key + '[' + i + ']',
++                    value: value[i],
++                    style: options.style,
++                    styleSpec: options.styleSpec
++                }));
++            }
++            break;
+ 
+-Painter.prototype.setup = function() {
+-    var gl = this.gl;
++        case 'has':
++        case '!has':
++            type = getType(value[1]);
++            if (value.length !== 2) {
++                errors.push(new ValidationError(key, value, 'filter array for "%s" operator must have 2 elements', value[0]));
++            } else if (type !== 'string') {
++                errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
++            } else if (value[1][0] === '@') {
++                errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
++            }
++            break;
+ 
+-    gl.verbose = true;
++    }
+ 
+-    // We are blending the new pixels *behind* the existing pixels. That way we can
+-    // draw front-to-back and use then stencil buffer to cull opaque pixels early.
+-    gl.enable(gl.BLEND);
+-    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
++    return errors;
++};
+ 
+-    gl.enable(gl.STENCIL_TEST);
++},{"../error/validation_error":235,"../util/get_type":237,"../util/unbundle_jsonlint":238,"./validate_enum":244}],246:[function(require,module,exports){
++'use strict';
+ 
+-    gl.enable(gl.DEPTH_TEST);
+-    gl.depthFunc(gl.LEQUAL);
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var validate = require('./validate');
++var validateObject = require('./validate_object');
++var validateArray = require('./validate_array');
++var validateNumber = require('./validate_number');
+ 
+-    this._depthMask = false;
+-    gl.depthMask(false);
++module.exports = function validateFunction(options) {
++    var functionValueSpec = options.valueSpec;
++    var stopKeyType;
+ 
+-    var PosArray = this.PosArray = new StructArrayType({
+-        members: [{ name: 'a_pos', type: 'Int16', components: 2 }]
+-    });
++    var isPropertyFunction = options.value.property !== undefined || stopKeyType === 'object';
++    var isZoomFunction = options.value.property === undefined || stopKeyType === 'object';
+ 
+-    var tileExtentArray = new PosArray();
+-    tileExtentArray.emplaceBack(0, 0);
+-    tileExtentArray.emplaceBack(EXTENT, 0);
+-    tileExtentArray.emplaceBack(0, EXTENT);
+-    tileExtentArray.emplaceBack(EXTENT, EXTENT);
+-    this.tileExtentBuffer = new Buffer(tileExtentArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
+-    this.tileExtentVAO = new VertexArrayObject();
+-    this.tileExtentPatternVAO = new VertexArrayObject();
++    var errors = validateObject({
++        key: options.key,
++        value: options.value,
++        valueSpec: options.styleSpec.function,
++        style: options.style,
++        styleSpec: options.styleSpec,
++        objectElementValidators: { stops: validateFunctionStops }
++    });
+ 
+-    var debugArray = new PosArray();
+-    debugArray.emplaceBack(0, 0);
+-    debugArray.emplaceBack(EXTENT, 0);
+-    debugArray.emplaceBack(EXTENT, EXTENT);
+-    debugArray.emplaceBack(0, EXTENT);
+-    debugArray.emplaceBack(0, 0);
+-    this.debugBuffer = new Buffer(debugArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
+-    this.debugVAO = new VertexArrayObject();
++    if (options.styleSpec.$version >= 8) {
++       if (isPropertyFunction && !options.valueSpec['property-function']) {
++           errors.push(new ValidationError(options.key, options.value, 'property functions not supported'));
++       } else if (isZoomFunction && !options.valueSpec['zoom-function']) {
++           errors.push(new ValidationError(options.key, options.value, 'zoom functions not supported'));
++       }
++    }
+ 
+-    var rasterBoundsArray = new RasterBoundsArray();
+-    rasterBoundsArray.emplaceBack(0, 0, 0, 0);
+-    rasterBoundsArray.emplaceBack(EXTENT, 0, 32767, 0);
+-    rasterBoundsArray.emplaceBack(0, EXTENT, 0, 32767);
+-    rasterBoundsArray.emplaceBack(EXTENT, EXTENT, 32767, 32767);
+-    this.rasterBoundsBuffer = new Buffer(rasterBoundsArray.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
+-    this.rasterBoundsVAO = new VertexArrayObject();
+-};
++    return errors;
+ 
+-/*
+- * Reset the color buffers of the drawing canvas.
+- */
+-Painter.prototype.clearColor = function() {
+-    var gl = this.gl;
+-    gl.clearColor(0, 0, 0, 0);
+-    gl.clear(gl.COLOR_BUFFER_BIT);
+-};
++    function validateFunctionStops(options) {
++        var errors = [];
++        var value = options.value;
+ 
+-/*
+- * Reset the drawing canvas by clearing the stencil buffer so that we can draw
+- * new tiles at the same location, while retaining previously drawn pixels.
+- */
+-Painter.prototype.clearStencil = function() {
+-    var gl = this.gl;
+-    gl.clearStencil(0x0);
+-    gl.stencilMask(0xFF);
+-    gl.clear(gl.STENCIL_BUFFER_BIT);
+-};
++        errors = errors.concat(validateArray({
++            key: options.key,
++            value: value,
++            valueSpec: options.valueSpec,
++            style: options.style,
++            styleSpec: options.styleSpec,
++            arrayElementValidator: validateFunctionStop
++        }));
+ 
+-Painter.prototype.clearDepth = function() {
+-    var gl = this.gl;
+-    gl.clearDepth(1);
+-    this.depthMask(true);
+-    gl.clear(gl.DEPTH_BUFFER_BIT);
+-};
++        if (getType(value) === 'array' && value.length === 0) {
++            errors.push(new ValidationError(options.key, value, 'array must have at least one stop'));
++        }
+ 
+-Painter.prototype._renderTileClippingMasks = function(coords) {
+-    var gl = this.gl;
+-    gl.colorMask(false, false, false, false);
+-    this.depthMask(false);
+-    gl.disable(gl.DEPTH_TEST);
+-    gl.enable(gl.STENCIL_TEST);
++        return errors;
++    }
+ 
+-    // Only write clipping IDs to the last 5 bits. The first three are used for drawing fills.
+-    gl.stencilMask(0xF8);
+-    // Tests will always pass, and ref value will be written to stencil buffer.
+-    gl.stencilOp(gl.KEEP, gl.KEEP, gl.REPLACE);
++    function validateFunctionStop(options) {
++        var errors = [];
++        var value = options.value;
++        var key = options.key;
+ 
+-    var idNext = 1;
+-    this._tileClippingMaskIDs = {};
+-    for (var i = 0; i < coords.length; i++) {
+-        var coord = coords[i];
+-        var id = this._tileClippingMaskIDs[coord.id] = (idNext++) << 3;
++        if (getType(value) !== 'array') {
++            return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
++        }
+ 
+-        gl.stencilFunc(gl.ALWAYS, id, 0xF8);
++        if (value.length !== 2) {
++            return [new ValidationError(key, value, 'array length %d expected, length %d found', 2, value.length)];
++        }
+ 
+-        var program = this.useProgram('fill');
+-        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
++        var type = getType(value[0]);
++        if (!stopKeyType) stopKeyType = type;
++        if (type !== stopKeyType) {
++            return [new ValidationError(key, value, '%s stop key type must match previous stop key type %s', type, stopKeyType)];
++        }
+ 
+-        // Draw the clipping mask
+-        this.tileExtentVAO.bind(gl, program, this.tileExtentBuffer);
+-        gl.drawArrays(gl.TRIANGLE_STRIP, 0, this.tileExtentBuffer.length);
+-    }
++        if (type === 'object') {
++            if (value[0].zoom === undefined) {
++                return [new ValidationError(key, value, 'object stop key must have zoom')];
++            }
++            if (value[0].value === undefined) {
++                return [new ValidationError(key, value, 'object stop key must have value')];
++            }
++            errors = errors.concat(validateObject({
++                key: key + '[0]',
++                value: value[0],
++                valueSpec: { zoom: {} },
++                style: options.style,
++                styleSpec: options.styleSpec,
++                objectElementValidators: { zoom: validateNumber, value: validateValue }
++            }));
++        } else {
++            errors = errors.concat((isZoomFunction ? validateNumber : validateValue)({
++                key: key + '[0]',
++                value: value[0],
++                valueSpec: {},
++                style: options.style,
++                styleSpec: options.styleSpec
++            }));
++        }
+ 
+-    gl.stencilMask(0x00);
+-    gl.colorMask(true, true, true, true);
+-    this.depthMask(true);
+-    gl.enable(gl.DEPTH_TEST);
+-};
++        errors = errors.concat(validate({
++            key: key + '[1]',
++            value: value[1],
++            valueSpec: functionValueSpec,
++            style: options.style,
++            styleSpec: options.styleSpec
++        }));
+ 
+-Painter.prototype.enableTileClippingMask = function(coord) {
+-    var gl = this.gl;
+-    gl.stencilFunc(gl.EQUAL, this._tileClippingMaskIDs[coord.id], 0xF8);
+-};
++        if (getType(value[0]) === 'number') {
++            if (functionValueSpec.function === 'piecewise-constant' && value[0] % 1 !== 0) {
++                errors.push(new ValidationError(key + '[0]', value[0], 'zoom level for piecewise-constant functions must be an integer'));
++            }
+ 
+-// Overridden by headless tests.
+-Painter.prototype.prepareBuffers = function() {};
+-Painter.prototype.bindDefaultFramebuffer = function() {
+-    var gl = this.gl;
+-    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+-};
++            if (options.arrayIndex !== 0) {
++                if (value[0] < options.array[options.arrayIndex - 1][0]) {
++                    errors.push(new ValidationError(key + '[0]', value[0], 'array stops must appear in ascending order'));
++                }
++            }
++        }
+ 
+-var draw = {
+-    symbol: require('./draw_symbol'),
+-    circle: require('./draw_circle'),
+-    line: require('./draw_line'),
+-    fill: require('./draw_fill'),
+-    raster: require('./draw_raster'),
+-    background: require('./draw_background'),
+-    debug: require('./draw_debug')
+-};
++        return errors;
++    }
+ 
+-Painter.prototype.render = function(style, options) {
+-    this.style = style;
+-    this.options = options;
++    function validateValue(options) {
++        var errors = [];
++        var type = getType(options.value);
++        if (type !== 'number' && type !== 'string' && type !== 'array') {
++            errors.push(new ValidationError(options.key, options.value, 'property value must be a number, string or array'));
++        }
++        return errors;
++    }
+ 
+-    this.lineAtlas = style.lineAtlas;
++};
+ 
+-    this.spriteAtlas = style.spriteAtlas;
+-    this.spriteAtlas.setSprite(style.sprite);
++},{"../error/validation_error":235,"../util/get_type":237,"./validate":239,"./validate_array":240,"./validate_number":250,"./validate_object":251}],247:[function(require,module,exports){
++'use strict';
+ 
+-    this.glyphSource = style.glyphSource;
++var ValidationError = require('../error/validation_error');
++var validateString = require('./validate_string');
+ 
+-    this.frameHistory.record(this.transform.zoom);
++module.exports = function(options) {
++    var value = options.value;
++    var key = options.key;
+ 
+-    this.prepareBuffers();
+-    this.clearColor();
+-    this.clearDepth();
++    var errors = validateString(options);
++    if (errors.length) return errors;
+ 
+-    this.showOverdrawInspector(options.showOverdrawInspector);
++    if (value.indexOf('{fontstack}') === -1) {
++        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{fontstack}" token'));
++    }
+ 
+-    this.depthRange = (style._order.length + 2) * this.numSublayers * this.depthEpsilon;
++    if (value.indexOf('{range}') === -1) {
++        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{range}" token'));
++    }
+ 
+-    this.renderPass({isOpaquePass: true});
+-    this.renderPass({isOpaquePass: false});
++    return errors;
+ };
+ 
+-Painter.prototype.renderPass = function(options) {
+-    var groups = this.style._groups;
+-    var isOpaquePass = options.isOpaquePass;
+-    this.currentLayer = isOpaquePass ? this.style._order.length : -1;
+-
+-    for (var i = 0; i < groups.length; i++) {
+-        var group = groups[isOpaquePass ? groups.length - 1 - i : i];
+-        var source = this.style.sources[group.source];
+-
+-        var j;
+-        var coords = [];
+-        if (source) {
+-            coords = source.getVisibleCoordinates();
+-            for (j = 0; j < coords.length; j++) {
+-                coords[j].posMatrix = this.transform.calculatePosMatrix(coords[j], source.maxzoom);
+-            }
+-            this.clearStencil();
+-            if (source.prepare) source.prepare();
+-            if (source.isTileClipped) {
+-                this._renderTileClippingMasks(coords);
+-            }
+-        }
++},{"../error/validation_error":235,"./validate_string":254}],248:[function(require,module,exports){
++'use strict';
+ 
+-        if (isOpaquePass) {
+-            if (!this._showOverdrawInspector) {
+-                this.gl.disable(this.gl.BLEND);
+-            }
+-            this.isOpaquePass = true;
+-        } else {
+-            this.gl.enable(this.gl.BLEND);
+-            this.isOpaquePass = false;
+-            coords.reverse();
+-        }
++var ValidationError = require('../error/validation_error');
++var unbundle = require('../util/unbundle_jsonlint');
++var validateObject = require('./validate_object');
++var validateFilter = require('./validate_filter');
++var validatePaintProperty = require('./validate_paint_property');
++var validateLayoutProperty = require('./validate_layout_property');
++var extend = require('../util/extend');
+ 
+-        for (j = 0; j < group.length; j++) {
+-            var layer = group[isOpaquePass ? group.length - 1 - j : j];
+-            this.currentLayer += isOpaquePass ? -1 : 1;
+-            this.renderLayer(this, source, layer, coords);
+-        }
++module.exports = function validateLayer(options) {
++    var errors = [];
+ 
+-        if (source) {
+-            draw.debug(this, source, coords);
+-        }
++    var layer = options.value;
++    var key = options.key;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++
++    if (!layer.type && !layer.ref) {
++        errors.push(new ValidationError(key, layer, 'either "type" or "ref" is required'));
+     }
+-};
++    var type = unbundle(layer.type);
++    var ref = unbundle(layer.ref);
+ 
+-Painter.prototype.depthMask = function(mask) {
+-    if (mask !== this._depthMask) {
+-        this._depthMask = mask;
+-        this.gl.depthMask(mask);
++    if (layer.id) {
++        for (var i = 0; i < options.arrayIndex; i++) {
++            var otherLayer = style.layers[i];
++            if (unbundle(otherLayer.id) === unbundle(layer.id)) {
++                errors.push(new ValidationError(key, layer.id, 'duplicate layer id "%s", previously used at line %d', layer.id, otherLayer.id.__line__));
++            }
++        }
+     }
+-};
+ 
+-Painter.prototype.renderLayer = function(painter, source, layer, coords) {
+-    if (layer.isHidden(this.transform.zoom)) return;
+-    if (layer.type !== 'background' && !coords.length) return;
+-    this.id = layer.id;
+-    draw[layer.type](painter, source, layer, coords);
+-};
++    if ('ref' in layer) {
++        ['type', 'source', 'source-layer', 'filter', 'layout'].forEach(function (p) {
++            if (p in layer) {
++                errors.push(new ValidationError(key, layer[p], '"%s" is prohibited for ref layers', p));
++            }
++        });
+ 
+-Painter.prototype.setDepthSublayer = function(n) {
+-    var farDepth = 1 - ((1 + this.currentLayer) * this.numSublayers + n) * this.depthEpsilon;
+-    var nearDepth = farDepth - 1 + this.depthRange;
+-    this.gl.depthRange(nearDepth, farDepth);
+-};
++        var parent;
+ 
+-Painter.prototype.translatePosMatrix = function(matrix, tile, translate, anchor) {
+-    if (!translate[0] && !translate[1]) return matrix;
++        style.layers.forEach(function(layer) {
++            if (layer.id == ref) parent = layer;
++        });
+ 
+-    if (anchor === 'viewport') {
+-        var sinA = Math.sin(-this.transform.angle);
+-        var cosA = Math.cos(-this.transform.angle);
+-        translate = [
+-            translate[0] * cosA - translate[1] * sinA,
+-            translate[0] * sinA + translate[1] * cosA
+-        ];
++        if (!parent) {
++            errors.push(new ValidationError(key, layer.ref, 'ref layer "%s" not found', ref));
++        } else if (parent.ref) {
++            errors.push(new ValidationError(key, layer.ref, 'ref cannot reference another ref layer'));
++        } else {
++            type = unbundle(parent.type);
++        }
++    } else if (type !== 'background') {
++        if (!layer.source) {
++            errors.push(new ValidationError(key, layer, 'missing required property "source"'));
++        } else {
++            var source = style.sources && style.sources[layer.source];
++            if (!source) {
++                errors.push(new ValidationError(key, layer.source, 'source "%s" not found', layer.source));
++            } else if (source.type == 'vector' && type == 'raster') {
++                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a raster source', layer.id));
++            } else if (source.type == 'raster' && type != 'raster') {
++                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a vector source', layer.id));
++            } else if (source.type == 'vector' && !layer['source-layer']) {
++                errors.push(new ValidationError(key, layer, 'layer "%s" must specify a "source-layer"', layer.id));
++            }
++        }
+     }
+ 
+-    var translation = [
+-        pixelsToTileUnits(tile, translate[0], this.transform.zoom),
+-        pixelsToTileUnits(tile, translate[1], this.transform.zoom),
+-        0
+-    ];
++    errors = errors.concat(validateObject({
++        key: key,
++        value: layer,
++        valueSpec: styleSpec.layer,
++        style: options.style,
++        styleSpec: options.styleSpec,
++        objectElementValidators: {
++            filter: validateFilter,
++            layout: function(options) {
++                return validateObject({
++                    layer: layer,
++                    key: options.key,
++                    value: options.value,
++                    style: options.style,
++                    styleSpec: options.styleSpec,
++                    objectElementValidators: {
++                        '*': function(options) {
++                            return validateLayoutProperty(extend({layerType: type}, options));
++                        }
++                    }
++                });
++            },
++            paint: function(options) {
++                return validateObject({
++                    layer: layer,
++                    key: options.key,
++                    value: options.value,
++                    style: options.style,
++                    styleSpec: options.styleSpec,
++                    objectElementValidators: {
++                        '*': function(options) {
++                            return validatePaintProperty(extend({layerType: type}, options));
++                        }
++                    }
++                });
++            }
++        }
++    }));
+ 
+-    var translatedMatrix = new Float32Array(16);
+-    mat4.translate(translatedMatrix, matrix, translation);
+-    return translatedMatrix;
++    return errors;
+ };
+ 
+-Painter.prototype.saveTexture = function(texture) {
+-    var textures = this.reusableTextures[texture.size];
+-    if (!textures) {
+-        this.reusableTextures[texture.size] = [texture];
+-    } else {
+-        textures.push(texture);
+-    }
+-};
++},{"../error/validation_error":235,"../util/extend":236,"../util/unbundle_jsonlint":238,"./validate_filter":245,"./validate_layout_property":249,"./validate_object":251,"./validate_paint_property":252}],249:[function(require,module,exports){
++'use strict';
+ 
++var validate = require('./validate');
++var ValidationError = require('../error/validation_error');
+ 
+-Painter.prototype.getTexture = function(size) {
+-    var textures = this.reusableTextures[size];
+-    return textures && textures.length > 0 ? textures.pop() : null;
+-};
++module.exports = function validateLayoutProperty(options) {
++    var key = options.key;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var value = options.value;
++    var propertyKey = options.objectKey;
++    var layerSpec = styleSpec['layout_' + options.layerType];
+ 
+-Painter.prototype.lineWidth = function(width) {
+-    this.gl.lineWidth(util.clamp(width, this.lineWidthRange[0], this.lineWidthRange[1]));
+-};
++    if (!layerSpec) return [];
+ 
+-Painter.prototype.showOverdrawInspector = function(enabled) {
+-    if (!enabled && !this._showOverdrawInspector) return;
+-    this._showOverdrawInspector = enabled;
++    if (options.valueSpec || layerSpec[propertyKey]) {
++        var errors = [];
++
++        if (options.layerType === 'symbol') {
++            if (propertyKey === 'icon-image' && style && !style.sprite) {
++                errors.push(new ValidationError(key, value, 'use of "icon-image" requires a style "sprite" property'));
++            } else if (propertyKey === 'text-field' && style && !style.glyphs) {
++                errors.push(new ValidationError(key, value, 'use of "text-field" requires a style "glyphs" property'));
++            }
++        }
++
++        return errors.concat(validate({
++            key: options.key,
++            value: value,
++            valueSpec: options.valueSpec || layerSpec[propertyKey],
++            style: style,
++            styleSpec: styleSpec
++        }));
+ 
+-    var gl = this.gl;
+-    if (enabled) {
+-        gl.blendFunc(gl.CONSTANT_COLOR, gl.ONE);
+-        var numOverdrawSteps = 8;
+-        var a = 1 / numOverdrawSteps;
+-        gl.blendColor(a, a, a, 0);
+-        gl.clearColor(0, 0, 0, 1);
+-        gl.clear(gl.COLOR_BUFFER_BIT);
+     } else {
+-        gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
++        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
+     }
++
+ };
+ 
+-},{"../data/bucket":247,"../data/buffer":252,"../source/pixels_to_tile_units":277,"../source/tile_pyramid":282,"../util/browser":335,"../util/struct_array":347,"../util/util":349,"./draw_background":261,"./draw_circle":262,"./draw_debug":264,"./draw_fill":265,"./draw_line":266,"./draw_raster":267,"./draw_symbol":268,"./frame_history":269,"./painter/use_program":272,"./vertex_array_object":273,"gl-matrix":363}],272:[function(require,module,exports){
++},{"../error/validation_error":235,"./validate":239}],250:[function(require,module,exports){
+ 'use strict';
+ 
++var getType = require('../util/get_type');
++var ValidationError = require('../error/validation_error');
+ 
+-var path = require('path');
+-var assert = require('assert');
+-var util = require('../../util/util');
++module.exports = function validateNumber(options) {
++    var key = options.key;
++    var value = options.value;
++    var valueSpec = options.valueSpec;
++    var type = getType(value);
+ 
+-// readFileSync calls must be written out long-form for brfs.
+-var definitions = {
+-    debug: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\n\nvoid main() {\n    gl_FragColor = u_color;\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1);\n}\n"
+-    },
+-    fill: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvoid main() {\n    gl_FragColor = u_color * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n"
+-    },
+-    circle: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp float u_blur;\nuniform lowp float u_opacity;\n\nvarying lowp vec4 v_color;\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main() {\n    float t = smoothstep(1.0 - max(u_blur, v_antialiasblur), 1.0, length(v_extrude));\n    gl_FragColor = v_color * (1.0 - t) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_extrude_scale;\nuniform float u_devicepixelratio;\n\nattribute vec2 a_pos;\n\n#ifdef ATTRIBUTE_A_COLOR\nattribute lowp vec4 a_color;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\nuniform lowp float u_color_t;\nattribute lowp vec4 a_color0;\nattribute lowp vec4 a_color1;\nattribute lowp vec4 a_color2;\nattribute lowp vec4 a_color3;\n#else\nuniform lowp vec4 a_color;\n#endif\n\n#ifdef ATTRIBUTE_A_RADIUS\nattribute mediump float a_radius;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\nuniform lowp float u_radius_t;\nattribute mediump vec4 a_radius;\n#else\nuniform mediump float a_radius;\n#endif\n\nvarying vec2 v_extrude;\nvarying lowp vec4 v_color;\nvarying lowp float v_antialiasblur;\n\nfloat evaluate_zoom_function_1(const vec4 values, const float t) {\n    if (t < 1.0) {\n        return mix(values[0], values[1], t);\n    } else if (t < 2.0) {\n        return mix(values[1], values[2], t - 1.0);\n    } else {\n        return mix(values[2], values[3], t - 2.0);\n    }\n}\n\nvec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) {\n    if (t < 1.0) {\n        return mix(value0, value1, t);\n    } else if (t < 2.0) {\n        return mix(value1, value2, t - 1.0);\n    } else {\n        return mix(value2, value3, t - 2.0);\n    }\n}\n\nvoid main(void) {\n\n#ifdef ATTRIBUTE_A_RADIUS\n    mediump float radius = a_radius / 10.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\n    mediump float radius = evaluate_zoom_function_1(a_radius, u_radius_t) / 10.0;\n#else\n    mediump float radius = a_radius;\n#endif\n\n    // unencode the extrusion vector that we snuck into the a_pos vector\n    v_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);\n\n    vec2 extrude = v_extrude * radius * u_extrude_scale;\n    // multiply a_pos by 0.5, since we had it * 2 in order to sneak\n    // in extrusion data\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1);\n\n    // gl_Position is divided by gl_Position.w after this shader runs.\n    // Multiply the extrude by it so that it isn't affected by it.\n    gl_Position.xy += extrude * gl_Position.w;\n\n#ifdef ATTRIBUTE_A_COLOR\n    v_color = a_color / 255.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\n    v_color = evaluate_zoom_function_4(a_color0, a_color1, a_color2, a_color3, u_color_t) / 255.0;\n#else\n    v_color = a_color;\n#endif\n\n    // This is a minimum blur distance that serves as a faux-antialiasing for\n    // the circle. since blur is a ratio of the circle's size and the intent is\n    // to keep the blur at roughly 1px, the two are inversely related.\n    v_antialiasblur = 1.0 / u_devicepixelratio / radius;\n}\n"
+-    },
+-    line: {
+-        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
+-    },
+-    linepattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform float u_point;\nuniform float u_blur;\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_fade;\nuniform float u_opacity;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0);\n    float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0);\n    float y_a = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_a.y);\n    float y_b = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_b.y);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, vec2(x_a, y_a));\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, vec2(x_b, y_b));\n\n    vec4 color = mix(texture2D(u_image, pos), texture2D(u_image, pos2), u_fade);\n\n    alpha *= u_opacity;\n\n    gl_FragColor = color * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 extrude = a_extrude * scale;\n    mediump vec2 dist = u_linewidth.s * extrude;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n    v_linesofar = a_linesofar;\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
+-    },
+-    linesdfpattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\nuniform sampler2D u_image;\nuniform float u_sdfgamma;\nuniform float u_mix;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float sdfdist_a = texture2D(u_image, v_tex_a).a;\n    float sdfdist_b = texture2D(u_image, v_tex_b).a;\n    float sdfdist = mix(sdfdist_a, sdfdist_b, u_mix);\n    alpha *= smoothstep(0.5 - u_sdfgamma, 0.5 + u_sdfgamma, sdfdist);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump vec2 u_linewidth;\nuniform mediump float u_ratio;\nuniform vec2 u_patternscale_a;\nuniform float u_tex_y_a;\nuniform vec2 u_patternscale_b;\nuniform float u_tex_y_b;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    v_tex_a = vec2(a_linesofar * u_patternscale_a.x, normal.y * u_patternscale_a.y + u_tex_y_a);\n    v_tex_b = vec2(a_linesofar * u_patternscale_b.x, normal.y * u_patternscale_b.y + u_tex_y_b);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
+-    },
+-    outline: {
+-        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
+-    },
+-    outlinepattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    // find distance to outline for alpha interpolation\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    \n\n    gl_FragColor = mix(color1, color2, u_mix) * alpha * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
+-    },
+-    pattern: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    gl_FragColor = mix(color1, color2, u_mix) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n}\n"
+-    },
+-    raster: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_opacity0;\nuniform float u_opacity1;\nuniform sampler2D u_image0;\nuniform sampler2D u_image1;\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nuniform float u_brightness_low;\nuniform float u_brightness_high;\n\nuniform float u_saturation_factor;\nuniform float u_contrast_factor;\nuniform vec3 u_spin_weights;\n\nvoid main() {\n\n    // read and cross-fade colors from the main and parent tiles\n    vec4 color0 = texture2D(u_image0, v_pos0);\n    vec4 color1 = texture2D(u_image1, v_pos1);\n    vec4 color = color0 * u_opacity0 + color1 * u_opacity1;\n    vec3 rgb = color.rgb;\n\n    // spin\n    rgb = vec3(\n        dot(rgb, u_spin_weights.xyz),\n        dot(rgb, u_spin_weights.zxy),\n        dot(rgb, u_spin_weights.yzx));\n\n    // saturation\n    float average = (color.r + color.g + color.b) / 3.0;\n    rgb += (average - rgb) * u_saturation_factor;\n\n    // contrast\n    rgb = (rgb - 0.5) * u_contrast_factor + 0.5;\n\n    // brightness\n    vec3 u_high_vec = vec3(u_brightness_low, u_brightness_low, u_brightness_low);\n    vec3 u_low_vec = vec3(u_brightness_high, u_brightness_high, u_brightness_high);\n\n    gl_FragColor = vec4(mix(u_high_vec, u_low_vec, rgb), color.a);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_tl_parent;\nuniform float u_scale_parent;\nuniform float u_buffer_scale;\n\nattribute vec2 a_pos;\nattribute vec2 a_texture_pos;\n\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5;\n    v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent;\n}\n"
+-    },
+-    icon: {
+-        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp float u_opacity;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * u_opacity;\n    gl_FragColor = texture2D(u_texture, v_tex) * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
+-    },
+-    sdf: {
+-        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform lowp float u_buffer;\nuniform lowp float u_gamma;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    lowp float dist = texture2D(u_texture, v_tex).a;\n    lowp float fade_alpha = texture2D(u_fadetexture, v_fade_tex).a;\n    lowp float gamma = u_gamma * v_gamma_scale;\n    lowp float alpha = smoothstep(u_buffer - gamma, u_buffer + gamma, dist) * fade_alpha;\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - y * u_extra);\n    v_gamma_scale = perspective_scale;\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
+-    },
+-    collisionbox: {
+-        fragmentSource: "precision mediump float;\n\nuniform float u_zoom;\nuniform float u_maxzoom;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n\n    float alpha = 0.5;\n\n    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha;\n\n    if (v_placement_zoom > u_zoom) {\n        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha;\n    }\n\n    if (u_zoom >= v_max_zoom) {\n        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25;\n    }\n\n    if (v_placement_zoom >= u_maxzoom) {\n        gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2;\n    }\n}\n",
+-        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_extrude;\nattribute vec2 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_scale;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n     gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0);\n\n     v_max_zoom = a_data.x;\n     v_placement_zoom = a_data.y;\n}\n"
++    if (type !== 'number') {
++        return [new ValidationError(key, value, 'number expected, %s found', type)];
+     }
+-};
+ 
+-module.exports._createProgram = function(name, macros) {
+-    var gl = this.gl;
+-    var program = gl.createProgram();
+-    var definition = definitions[name];
++    if ('minimum' in valueSpec && value < valueSpec.minimum) {
++        return [new ValidationError(key, value, '%s is less than the minimum value %s', value, valueSpec.minimum)];
++    }
+ 
+-    var defines = '';
+-    if (macros) {
+-        for (var m = 0; m < macros.length; m++) {
+-            defines += '#define ' + macros[m] + '\n';
+-        }
++    if ('maximum' in valueSpec && value > valueSpec.maximum) {
++        return [new ValidationError(key, value, '%s is greater than the maximum value %s', value, valueSpec.maximum)];
+     }
+ 
+-    var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);
+-    gl.shaderSource(fragmentShader, defines + definition.fragmentSource);
+-    gl.compileShader(fragmentShader);
+-    assert(gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(fragmentShader));
+-    gl.attachShader(program, fragmentShader);
++    return [];
++};
+ 
+-    var vertexShader = gl.createShader(gl.VERTEX_SHADER);
+-    gl.shaderSource(vertexShader, defines + definition.vertexSource);
+-    gl.compileShader(vertexShader);
+-    assert(gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(vertexShader));
+-    gl.attachShader(program, vertexShader);
++},{"../error/validation_error":235,"../util/get_type":237}],251:[function(require,module,exports){
++'use strict';
+ 
+-    gl.linkProgram(program);
+-    assert(gl.getProgramParameter(program, gl.LINK_STATUS), gl.getProgramInfoLog(program));
++var ValidationError = require('../error/validation_error');
++var getType = require('../util/get_type');
++var validate = require('./validate');
+ 
+-    var attributes = {};
+-    var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
+-    for (var i = 0; i < numAttributes; i++) {
+-        var attribute = gl.getActiveAttrib(program, i);
+-        attributes[attribute.name] = i;
+-    }
++module.exports = function validateObject(options) {
++    var key = options.key;
++    var object = options.value;
++    var valueSpec = options.valueSpec;
++    var objectElementValidators = options.objectElementValidators || {};
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var errors = [];
+ 
+-    var uniforms = {};
+-    var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
+-    for (var ui = 0; ui < numUniforms; ui++) {
+-        var uniform = gl.getActiveUniform(program, ui);
+-        uniforms[uniform.name] = gl.getUniformLocation(program, uniform.name);
++    var type = getType(object);
++    if (type !== 'object') {
++        return [new ValidationError(key, object, 'object expected, %s found', type)];
+     }
+ 
+-    return util.extend({
+-        program: program,
+-        definition: definition,
+-        attributes: attributes,
+-        numAttributes: numAttributes
+-    }, attributes, uniforms);
+-};
+-
+-module.exports._createProgramCached = function(name, macros) {
+-    this.cache = this.cache || {};
+-    if (this._showOverdrawInspector) {
+-        macros = macros || [];
+-        macros.push('OVERDRAW_INSPECTOR');
+-    }
+-    var key = JSON.stringify({name: name, macros: macros});
+-    if (!this.cache[key]) {
+-        this.cache[key] = this._createProgram(name, macros);
+-    }
+-    return this.cache[key];
+-};
++    for (var objectKey in object) {
++        var valueSpecKey = objectKey.split('.')[0]; // treat 'paint.*' as 'paint'
++        var objectElementSpec = valueSpec && (valueSpec[valueSpecKey] || valueSpec['*']);
++        var objectElementValidator = objectElementValidators[valueSpecKey] || objectElementValidators['*'];
+ 
+-module.exports.useProgram = function (nextProgramName, macros) {
+-    var gl = this.gl;
++        if (objectElementSpec || objectElementValidator) {
++            errors = errors.concat((objectElementValidator || validate)({
++                key: (key ? key + '.' : key) + objectKey,
++                value: object[objectKey],
++                valueSpec: objectElementSpec,
++                style: style,
++                styleSpec: styleSpec,
++                object: object,
++                objectKey: objectKey
++            }));
+ 
+-    var nextProgram = this._createProgramCached(nextProgramName, macros);
+-    var previousProgram = this.currentProgram;
++        // tolerate root-level extra keys & arbitrary layer properties
++        // TODO remove this layer-specific logic
++        } else if (key !== '' && key.split('.').length !== 1) {
++            errors.push(new ValidationError(key, object[objectKey], 'unknown property "%s"', objectKey));
++        }
++    }
+ 
+-    if (previousProgram !== nextProgram) {
+-        gl.useProgram(nextProgram.program);
+-        this.currentProgram = nextProgram;
++    for (valueSpecKey in valueSpec) {
++        if (valueSpec[valueSpecKey].required && valueSpec[valueSpecKey]['default'] === undefined && object[valueSpecKey] === undefined) {
++            errors.push(new ValidationError(key, object, 'missing required property "%s"', valueSpecKey));
++        }
+     }
+ 
+-    return nextProgram;
++    return errors;
+ };
+ 
+-},{"../../util/util":349,"assert":52,"path":59}],273:[function(require,module,exports){
++},{"../error/validation_error":235,"../util/get_type":237,"./validate":239}],252:[function(require,module,exports){
+ 'use strict';
+ 
+-var assert = require('assert');
++var validate = require('./validate');
++var ValidationError = require('../error/validation_error');
+ 
+-module.exports = VertexArrayObject;
++module.exports = function validatePaintProperty(options) {
++    var key = options.key;
++    var style = options.style;
++    var styleSpec = options.styleSpec;
++    var value = options.value;
++    var propertyKey = options.objectKey;
++    var layerSpec = styleSpec['paint_' + options.layerType];
+ 
+-function VertexArrayObject() {
+-    this.boundProgram = null;
+-    this.boundVertexBuffer = null;
+-    this.boundVertexBuffer2 = null;
+-    this.boundElementBuffer = null;
+-    this.vao = null;
+-}
++    if (!layerSpec) return [];
+ 
+-var reported = false;
++    var transitionMatch = propertyKey.match(/^(.*)-transition$/);
+ 
+-VertexArrayObject.prototype.bind = function(gl, program, vertexBuffer, elementBuffer, vertexBuffer2) {
++    if (transitionMatch && layerSpec[transitionMatch[1]] && layerSpec[transitionMatch[1]].transition) {
++        return validate({
++            key: key,
++            value: value,
++            valueSpec: styleSpec.transition,
++            style: style,
++            styleSpec: styleSpec
++        });
+ 
+-    var ext = gl.extVertexArrayObject;
+-    if (ext === undefined) {
+-        ext = gl.extVertexArrayObject = gl.getExtension("OES_vertex_array_object");
+-    }
++    } else if (options.valueSpec || layerSpec[propertyKey]) {
++        return validate({
++            key: options.key,
++            value: value,
++            valueSpec: options.valueSpec || layerSpec[propertyKey],
++            style: style,
++            styleSpec: styleSpec
++        });
+ 
+-    if (ext) {
+-        if (!this.vao) this.vao = ext.createVertexArrayOES();
+-        ext.bindVertexArrayOES(this.vao);
+-    } else if (!reported) {
+-        console.warn('Not using VertexArrayObject extension.');
+-        reported = true;
++    } else {
++        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
+     }
+ 
+-    if (!this.boundProgram) {
++};
+ 
+-        var numPrevAttributes = ext ? 0 : (gl.currentNumAttributes || 0);
+-        var numNextAttributes = program.numAttributes;
+-        var i;
++},{"../error/validation_error":235,"./validate":239}],253:[function(require,module,exports){
++'use strict';
+ 
+-        // Enable all attributes for the new program.
+-        for (i = numPrevAttributes; i < numNextAttributes; i++) {
+-            gl.enableVertexAttribArray(i);
+-        }
++var ValidationError = require('../error/validation_error');
++var unbundle = require('../util/unbundle_jsonlint');
++var validateObject = require('./validate_object');
++var validateEnum = require('./validate_enum');
+ 
+-        if (!ext) {
+-            // Disable all attributes from the previous program that aren't used in
+-            // the new program. Note: attribute indices are *not* program specific!
+-            // WebGL breaks if you disable attribute 0. http://stackoverflow.com/questions/20305231
+-            assert(i > 0);
+-            for (i = numNextAttributes; i < numPrevAttributes; i++) {
+-                gl.disableVertexAttribArray(i);
++module.exports = function validateSource(options) {
++    var value = options.value;
++    var key = options.key;
++    var styleSpec = options.styleSpec;
++    var style = options.style;
++
++    if (!value.type) {
++        return [new ValidationError(key, value, '"type" is required')];
++    }
++
++    var type = unbundle(value.type);
++    switch (type) {
++        case 'vector':
++        case 'raster':
++            var errors = [];
++            errors = errors.concat(validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_tile,
++                style: options.style,
++                styleSpec: styleSpec
++            }));
++            if ('url' in value) {
++                for (var prop in value) {
++                    if (['type', 'url', 'tileSize'].indexOf(prop) < 0) {
++                        errors.push(new ValidationError(key + '.' + prop, value[prop], 'a source with a "url" property may not include a "%s" property', prop));
++                    }
++                }
+             }
+-            gl.currentNumAttributes = numNextAttributes;
+-        }
++            return errors;
+ 
+-        vertexBuffer.bind(gl);
+-        vertexBuffer.setVertexAttribPointers(gl, program);
+-        if (vertexBuffer2) {
+-            vertexBuffer2.bind(gl);
+-            vertexBuffer2.setVertexAttribPointers(gl, program);
+-        }
+-        if (elementBuffer) {
+-            elementBuffer.bind(gl);
+-        }
++        case 'geojson':
++            return validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_geojson,
++                style: style,
++                styleSpec: styleSpec
++            });
+ 
+-        if (ext) {
+-            // store the arguments so that we can verify them when the vao is bound again
+-            this.boundProgram = program;
+-            this.boundVertexBuffer = vertexBuffer;
+-            this.boundVertexBuffer2 = vertexBuffer2;
+-            this.boundElementBuffer = elementBuffer;
+-        }
++        case 'video':
++            return validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_video,
++                style: style,
++                styleSpec: styleSpec
++            });
+ 
+-    } else {
+-        // verify that bind was called with the same arguments
+-        assert(this.boundProgram === program, 'trying to bind a VAO to a different shader');
+-        assert(this.boundVertexBuffer === vertexBuffer, 'trying to bind a VAO to a different vertex buffer');
+-        assert(this.boundVertexBuffer2 === vertexBuffer2, 'trying to bind a VAO to a different vertex buffer');
+-        assert(this.boundElementBuffer === elementBuffer, 'trying to bind a VAO to a different element buffer');
+-    }
+-};
++        case 'image':
++            return validateObject({
++                key: key,
++                value: value,
++                valueSpec: styleSpec.source_image,
++                style: style,
++                styleSpec: styleSpec
++            });
+ 
+-VertexArrayObject.prototype.unbind = function(gl) {
+-    var ext = gl.extVertexArrayObject;
+-    if (ext) {
+-        ext.bindVertexArrayOES(null);
++        default:
++            return validateEnum({
++                key: key + '.type',
++                value: value.type,
++                valueSpec: {values: ['vector', 'raster', 'geojson', 'video', 'image']},
++                style: style,
++                styleSpec: styleSpec
++            });
+     }
+ };
+ 
+-VertexArrayObject.prototype.destroy = function(gl) {
+-    var ext = gl.extVertexArrayObject;
+-    if (ext && this.vao) {
+-        ext.deleteVertexArrayOES(this.vao);
+-        this.vao = null;
++},{"../error/validation_error":235,"../util/unbundle_jsonlint":238,"./validate_enum":244,"./validate_object":251}],254:[function(require,module,exports){
++'use strict';
++
++var getType = require('../util/get_type');
++var ValidationError = require('../error/validation_error');
++
++module.exports = function validateString(options) {
++    var value = options.value;
++    var key = options.key;
++    var type = getType(value);
++
++    if (type !== 'string') {
++        return [new ValidationError(key, value, 'string expected, %s found', type)];
+     }
++
++    return [];
+ };
+ 
+-},{"assert":52}],274:[function(require,module,exports){
++},{"../error/validation_error":235,"../util/get_type":237}],255:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('../util/util');
+-var Evented = require('../util/evented');
+-var TilePyramid = require('./tile_pyramid');
+-var Source = require('./source');
+-var urlResolve = require('resolve-url');
+-var EXTENT = require('../data/bucket').EXTENT;
+-
+-module.exports = GeoJSONSource;
++var validateConstants = require('./validate/validate_constants');
++var validate = require('./validate/validate');
++var latestStyleSpec = require('../reference/latest.min');
++var validateGlyphsURL = require('./validate/validate_glyphs_url');
+ 
+ /**
+- * Create a GeoJSON data source instance given an options object
+- * @class GeoJSONSource
+- * @param {Object} [options]
+- * @param {Object|string} options.data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
+- * @param {number} [options.maxzoom=18] Maximum zoom to preserve detail at.
+- * @param {number} [options.buffer] Tile buffer on each side in pixels.
+- * @param {number} [options.tolerance] Simplification tolerance (higher means simpler) in pixels.
+- * @param {number} [options.cluster] If the data is a collection of point features, setting this to true clusters the points by radius into groups.
+- * @param {number} [options.clusterRadius=50] Radius of each cluster when clustering points, in pixels.
+- * @param {number} [options.clusterMaxZoom] Max zoom to cluster points on. Defaults to one zoom less than `maxzoom` (so that last zoom features are not clustered).
+-
++ * Validate a Mapbox GL style against the style specification. This entrypoint,
++ * `mapbox-gl-style-spec/lib/validate_style.min`, is designed to produce as
++ * small a browserify bundle as possible by omitting unnecessary functionality
++ * and legacy style specifications.
++ *
++ * @param {Object} style The style to be validated.
++ * @param {Object} [styleSpec] The style specification to validate against.
++ *     If omitted, the latest style spec is used.
++ * @returns {Array<ValidationError>}
+  * @example
+- * var sourceObj = new mapboxgl.GeoJSONSource({
+- *    data: {
+- *        "type": "FeatureCollection",
+- *        "features": [{
+- *            "type": "Feature",
+- *            "geometry": {
+- *                "type": "Point",
+- *                "coordinates": [
+- *                    -76.53063297271729,
+- *                    39.18174077994108
+- *                ]
+- *            }
+- *        }]
+- *    }
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
++ *   var validate = require('mapbox-gl-style-spec/lib/validate_style.min');
++ *   var errors = validate(style);
+  */
+-function GeoJSONSource(options) {
+-    options = options || {};
++function validateStyleMin(style, styleSpec) {
++    styleSpec = styleSpec || latestStyleSpec;
+ 
+-    this._data = options.data;
++    var errors = [];
+ 
+-    if (options.maxzoom !== undefined) this.maxzoom = options.maxzoom;
++    errors = errors.concat(validate({
++        key: '',
++        value: style,
++        valueSpec: styleSpec.$root,
++        styleSpec: styleSpec,
++        style: style,
++        objectElementValidators: {
++            glyphs: validateGlyphsURL
++        }
++    }));
+ 
+-    var scale = EXTENT / this.tileSize;
++    if (styleSpec.$version > 7 && style.constants) {
++        errors = errors.concat(validateConstants({
++            key: 'constants',
++            value: style.constants,
++            style: style,
++            styleSpec: styleSpec
++        }));
++    }
+ 
+-    this.geojsonVtOptions = {
+-        buffer: (options.buffer !== undefined ? options.buffer : 128) * scale,
+-        tolerance: (options.tolerance !== undefined ? options.tolerance : 0.375) * scale,
+-        extent: EXTENT,
+-        maxZoom: this.maxzoom
+-    };
++    return sortErrors(errors);
++}
+ 
+-    this.cluster = options.cluster || false;
+-    this.superclusterOptions = {
+-        maxZoom: Math.min(options.clusterMaxZoom, this.maxzoom - 1) || (this.maxzoom - 1),
+-        extent: EXTENT,
+-        radius: (options.clusterRadius || 50) * scale,
+-        log: false
+-    };
++validateStyleMin.source = wrapCleanErrors(require('./validate/validate_source'));
++validateStyleMin.layer = wrapCleanErrors(require('./validate/validate_layer'));
++validateStyleMin.filter = wrapCleanErrors(require('./validate/validate_filter'));
++validateStyleMin.paintProperty = wrapCleanErrors(require('./validate/validate_paint_property'));
++validateStyleMin.layoutProperty = wrapCleanErrors(require('./validate/validate_layout_property'));
+ 
+-    this._pyramid = new TilePyramid({
+-        tileSize: this.tileSize,
+-        minzoom: this.minzoom,
+-        maxzoom: this.maxzoom,
+-        reparseOverscaled: true,
+-        load: this._loadTile.bind(this),
+-        abort: this._abortTile.bind(this),
+-        unload: this._unloadTile.bind(this),
+-        add: this._addTile.bind(this),
+-        remove: this._removeTile.bind(this),
+-        redoPlacement: this._redoTilePlacement.bind(this)
++function sortErrors(errors) {
++    return [].concat(errors).sort(function (a, b) {
++        return a.line - b.line;
+     });
+ }
+ 
+-GeoJSONSource.prototype = util.inherit(Evented, /** @lends GeoJSONSource.prototype */{
+-    minzoom: 0,
+-    maxzoom: 18,
+-    tileSize: 512,
+-    _dirty: true,
+-    isTileClipped: true,
++function wrapCleanErrors(inner) {
++    return function() {
++        return sortErrors(inner.apply(this, arguments));
++    };
++}
+ 
+-    /**
+-     * Update source geojson data and rerender map
+-     *
+-     * @param {Object|string} data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
+-     * @returns {GeoJSONSource} this
+-     */
+-    setData: function(data) {
+-        this._data = data;
+-        this._dirty = true;
++module.exports = validateStyleMin;
+ 
+-        this.fire('change');
++},{"../reference/latest.min":257,"./validate/validate":239,"./validate/validate_constants":243,"./validate/validate_filter":245,"./validate/validate_glyphs_url":247,"./validate/validate_layer":248,"./validate/validate_layout_property":249,"./validate/validate_paint_property":252,"./validate/validate_source":253}],256:[function(require,module,exports){
++module.exports = require('./v8.json');
+ 
+-        if (this.map)
+-            this.update(this.map.transform);
++},{"./v8.json":258}],257:[function(require,module,exports){
++module.exports = require('./v8.min.json');
+ 
+-        return this;
++},{"./v8.min.json":259}],258:[function(require,module,exports){
++module.exports={
++  "$version": 8,
++  "$root": {
++    "version": {
++      "required": true,
++      "type": "enum",
++      "values": [8],
++      "doc": "Style specification version number. Must be 8.",
++      "example": 8
+     },
+-
+-    onAdd: function(map) {
+-        this.map = map;
++    "name": {
++      "type": "string",
++      "doc": "A human-readable name for the style.",
++      "example": "Bright"
+     },
+-
+-    loaded: function() {
+-        return this._loaded && this._pyramid.loaded();
++    "metadata": {
++      "type": "*",
++      "doc": "Arbitrary properties useful to track with the stylesheet, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
+     },
+-
+-    update: function(transform) {
+-        if (this._dirty) {
+-            this._updateData();
++    "center": {
++      "type": "array",
++      "value": "number",
++      "doc": "Default map center in longitude and latitude.  The style center will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": [-73.9749, 40.7736]
++    },
++    "zoom": {
++      "type": "number",
++      "doc": "Default zoom level.  The style zoom will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": 12.5
++    },
++    "bearing": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "units": "degrees",
++      "doc": "Default bearing, in degrees clockwise from true north.  The style bearing will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": 29
++    },
++    "pitch": {
++      "type": "number",
++      "default": 0,
++      "units": "degrees",
++      "doc": "Default pitch, in degrees. Zero is perpendicular to the surface, for a look straight down at the map, while a greater value like 60 looks ahead towards the horizon. The style pitch will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
++      "example": 50
++    },
++    "sources": {
++      "required": true,
++      "type": "sources",
++      "doc": "Data source specifications.",
++      "example": {
++        "mapbox-streets": {
++          "type": "vector",
++          "url": "mapbox://mapbox.mapbox-streets-v6"
++        }
++      }
++    },
++    "sprite": {
++      "type": "string",
++      "doc": "A base URL for retrieving the sprite image and metadata. The extensions `.png`, `.json` and scale factor `@2x.png` will be automatically appended. This property is required if any layer uses the 'sprite-image' layout property.",
++      "example": "mapbox://sprites/mapbox/bright-v8"
++    },
++    "glyphs": {
++      "type": "string",
++      "doc": "A URL template for loading signed-distance-field glyph sets in PBF format. The URL must include `{fontstack}` and `{range}` tokens. This property is required if any layer uses the 'text-field' layout property.",
++      "example": "mapbox://fonts/mapbox/{fontstack}/{range}.pbf"
++    },
++    "transition": {
++      "type": "transition",
++      "doc": "A global transition definition to use as a default across properties.",
++      "example": {
++        "duration": 300,
++        "delay": 0
++      }
++    },
++    "layers": {
++      "required": true,
++      "type": "array",
++      "value": "layer",
++      "doc": "Layers will be drawn in the order of this array.",
++      "example": [
++        {
++          "id": "water",
++          "source": "mapbox-streets",
++          "source-layer": "water",
++          "type": "fill",
++          "paint": {
++            "fill-color": "#00ffff"
++          }
++        }
++      ]
++    }
++  },
++  "sources": {
++    "*": {
++      "type": "source",
++      "doc": "Specification of a data source. For vector and raster sources, either TileJSON or a URL to a TileJSON must be provided. For GeoJSON and video sources, a URL must be provided."
++    }
++  },
++  "source": [
++    "source_tile",
++    "source_geojson",
++    "source_video",
++    "source_image"
++  ],
++  "source_tile": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "vector",
++        "raster"
++      ],
++      "doc": "The data type of the tile source."
++    },
++    "url": {
++      "type": "string",
++      "doc": "A URL to a TileJSON resource. Supported protocols are `http:`, `https:`, and `mapbox://<mapid>`."
++    },
++    "tiles": {
++      "type": "array",
++      "value": "string",
++      "doc": "An array of one or more tile source URLs, as in the TileJSON spec."
++    },
++    "minzoom": {
++      "type": "number",
++      "default": 0,
++      "doc": "Minimum zoom level for which tiles are available, as in the TileJSON spec."
++    },
++    "maxzoom": {
++      "type": "number",
++      "default": 22,
++      "doc": "Maximum zoom level for which tiles are available, as in the TileJSON spec. Data from tiles at the maxzoom are used when displaying the map at higher zoom levels."
++    },
++    "tileSize": {
++      "type": "number",
++      "default": 512,
++      "units": "pixels",
++      "doc": "The minimum visual size to display tiles for this layer. Only configurable for raster layers."
++    },
++    "*": {
++      "type": "*",
++      "doc": "Other keys to configure the data source."
++    }
++  },
++  "source_geojson": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "geojson"
++      ],
++      "doc": "The data type of the GeoJSON source."
++    },
++    "data": {
++      "type": "*",
++      "doc": "A URL to a GeoJSON file, or inline GeoJSON."
++    },
++    "maxzoom": {
++      "type": "number",
++      "default": 18,
++      "doc": "Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels)."
++    },
++    "buffer": {
++      "type": "number",
++      "default": 128,
++      "doc": "Tile buffer size on each side (measured in 1/512ths of a tile; higher means fewer rendering artifacts near tile edges but slower performance)."
++    },
++    "tolerance": {
++      "type": "number",
++      "default": 0.375,
++      "doc": "Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance)."
++    },
++    "cluster": {
++      "type": "boolean",
++      "default": false,
++      "doc": "If the data is a collection of point features, setting this to true clusters the points by radius into groups."
++    },
++    "clusterRadius": {
++      "type": "number",
++      "default": 50,
++      "doc": "Radius of each cluster when clustering points, measured in 1/512ths of a tile."
++    },
++    "clusterMaxZoom": {
++      "type": "number",
++      "doc": "Max zoom to cluster points on. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered)."
++    }
++  },
++  "source_video": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "video"
++      ],
++      "doc": "The data type of the video source."
++    },
++    "urls": {
++      "required": true,
++      "type": "array",
++      "value": "string",
++      "doc": "URLs to video content in order of preferred format."
++    },
++    "coordinates": {
++      "required": true,
++      "doc": "Corners of video specified in longitude, latitude pairs.",
++      "type": "array",
++      "length": 4,
++      "value": {
++        "type": "array",
++        "length": 2,
++        "value": "number",
++        "doc": "A single longitude, latitude pair."
++      }
++    }
++  },
++  "source_image": {
++    "type": {
++      "required": true,
++      "type": "enum",
++      "values": [
++        "image"
++      ],
++      "doc": "The data type of the image source."
++    },
++    "url": {
++      "required": true,
++      "type": "string",
++      "doc": "URL that points to an image"
++    },
++    "coordinates": {
++      "required": true,
++      "doc": "Corners of image specified in longitude, latitude pairs.",
++      "type": "array",
++      "length": 4,
++      "value": {
++        "type": "array",
++        "length": 2,
++        "value": "number",
++        "doc": "A single longitude, latitude pair."
++      }
++    }
++  },
++  "layer": {
++    "id": {
++      "type": "string",
++      "doc": "Unique layer name.",
++      "required": true
++    },
++    "type": {
++      "type": "enum",
++      "values": [
++        "fill",
++        "line",
++        "symbol",
++        "circle",
++        "raster",
++        "background"
++      ],
++      "doc": "Rendering type of this layer."
++    },
++    "metadata": {
++      "type": "*",
++      "doc": "Arbitrary properties useful to track with the layer, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
++    },
++    "ref": {
++      "type": "string",
++      "doc": "References another layer to copy `type`, `source`, `source-layer`, `minzoom`, `maxzoom`, `filter`, and `layout` properties from. This allows the layers to share processing and be more efficient."
++    },
++    "source": {
++      "type": "string",
++      "doc": "Name of a source description to be used for this layer."
++    },
++    "source-layer": {
++      "type": "string",
++      "doc": "Layer to use from a vector tile source. Required if the source supports multiple layers."
++    },
++    "minzoom": {
++      "type": "number",
++      "minimum": 0,
++      "maximum": 22,
++      "doc": "The minimum zoom level on which the layer gets parsed and appears on."
++    },
++    "maxzoom": {
++      "type": "number",
++      "minimum": 0,
++      "maximum": 22,
++      "doc": "The maximum zoom level on which the layer gets parsed and appears on."
++    },
++    "interactive": {
++      "type": "boolean",
++      "doc": "Enable querying of feature data from this layer for interactivity.",
++      "default": false
++    },
++    "filter": {
++      "type": "filter",
++      "doc": "A expression specifying conditions on source features. Only features that match the filter are displayed."
++    },
++    "layout": {
++      "type": "layout",
++      "doc": "Layout properties for the layer."
++    },
++    "paint": {
++      "type": "paint",
++      "doc": "Default paint properties for this layer."
++    },
++    "paint.*": {
++      "type": "paint",
++      "doc": "Class-specific paint properties for this layer. The class name is the part after the first dot."
++    }
++  },
++  "layout": [
++    "layout_fill",
++    "layout_line",
++    "layout_circle",
++    "layout_symbol",
++    "layout_raster",
++    "layout_background"
++  ],
++  "layout_background": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "layout_fill": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "layout_circle": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        if (this._loaded) {
+-            this._pyramid.update(this.used, transform);
++      }
++    }
++  },
++  "layout_line": {
++    "line-cap": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "butt",
++        "round",
++        "square"
++      ],
++      "default": "butt",
++      "doc": "The display of line endings.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    reload: function() {
+-        if (this._loaded) {
+-            this._pyramid.reload();
++    "line-join": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "bevel",
++        "round",
++        "miter"
++      ],
++      "default": "miter",
++      "doc": "The display of lines when joining.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    serialize: function() {
+-        return {
+-            type: 'geojson',
+-            data: this._data
+-        };
+-    },
+-
+-    getVisibleCoordinates: Source._getVisibleCoordinates,
+-    getTile: Source._getTile,
+-
+-    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
+-    querySourceFeatures: Source._querySourceFeatures,
+-
+-    _updateData: function() {
+-        this._dirty = false;
+-        var options = {
+-            tileSize: this.tileSize,
+-            source: this.id,
+-            geojsonVtOptions: this.geojsonVtOptions,
+-            cluster: this.cluster,
+-            superclusterOptions: this.superclusterOptions
+-        };
+-
+-        var data = this._data;
+-        if (typeof data === 'string') {
+-            options.url = typeof window != 'undefined' ? urlResolve(window.location.href, data) : data;
+-        } else {
+-            options.data = JSON.stringify(data);
++    "line-miter-limit": {
++      "type": "number",
++      "default": 2,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Used to automatically convert miter joins to bevel joins for sharp angles.",
++      "requires": [
++        {
++          "line-join": "miter"
+         }
+-        this.workerID = this.dispatcher.send('parse geojson', options, function(err) {
+-            this._loaded = true;
+-            if (err) {
+-                this.fire('error', {error: err});
+-            } else {
+-                this._pyramid.reload();
+-                this.fire('change');
+-            }
+-
+-        }.bind(this));
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _loadTile: function(tile) {
+-        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
+-        var params = {
+-            uid: tile.uid,
+-            coord: tile.coord,
+-            zoom: tile.coord.z,
+-            maxZoom: this.maxzoom,
+-            tileSize: this.tileSize,
+-            source: this.id,
+-            overscaling: overscaling,
+-            angle: this.map.transform.angle,
+-            pitch: this.map.transform.pitch,
+-            showCollisionBoxes: this.map.showCollisionBoxes
+-        };
+-
+-        tile.workerID = this.dispatcher.send('load geojson tile', params, function(err, data) {
+-
+-            tile.unloadVectorData(this.map.painter);
+-
+-            if (tile.aborted)
+-                return;
+-
+-            if (err) {
+-                this.fire('tile.error', {tile: tile});
+-                return;
+-            }
+-
+-            tile.loadVectorData(data, this.map.style);
+-
+-            if (tile.redoWhenDone) {
+-                tile.redoWhenDone = false;
+-                tile.redoPlacement(this);
+-            }
+-
+-            this.fire('tile.load', {tile: tile});
+-
+-        }.bind(this), this.workerID);
++    "line-round-limit": {
++      "type": "number",
++      "default": 1.05,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Used to automatically convert round joins to miter joins for shallow angles.",
++      "requires": [
++        {
++          "line-join": "round"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _abortTile: function(tile) {
+-        tile.aborted = true;
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "layout_symbol": {
++    "symbol-placement": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++          "point",
++          "line"
++      ],
++      "default": "point",
++      "doc": "Label placement relative to its geometry. `line` can only be used on LineStrings and Polygons.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _addTile: function(tile) {
+-        this.fire('tile.add', {tile: tile});
++    "symbol-spacing": {
++      "type": "number",
++      "default": 250,
++      "minimum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "units": "pixels",
++      "doc": "Distance between two symbol anchors.",
++      "requires": [
++        {
++          "symbol-placement": "line"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _removeTile: function(tile) {
+-        this.fire('tile.remove', {tile: tile});
++    "symbol-avoid-edges": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _unloadTile: function(tile) {
+-        tile.unloadVectorData(this.map.painter);
+-        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    "icon-allow-overlap": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the icon will be visible even if it collides with other previously drawn symbols.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    redoPlacement: Source.redoPlacement,
+-
+-    _redoTilePlacement: function(tile) {
+-        tile.redoPlacement(this);
+-    }
+-});
+-
+-},{"../data/bucket":247,"../util/evented":341,"../util/util":349,"./source":279,"./tile_pyramid":282,"resolve-url":405}],275:[function(require,module,exports){
+-'use strict';
+-
+-var Point = require('point-geometry');
+-var VectorTileFeature = require('vector-tile').VectorTileFeature;
+-var EXTENT = require('../data/bucket').EXTENT;
+-
+-module.exports = GeoJSONWrapper;
+-
+-// conform to vectortile api
+-function GeoJSONWrapper(features) {
+-    this.features = features;
+-    this.length = features.length;
+-    this.extent = EXTENT;
+-}
+-
+-GeoJSONWrapper.prototype.feature = function(i) {
+-    return new FeatureWrapper(this.features[i]);
+-};
+-
+-function FeatureWrapper(feature) {
+-    this.type = feature.type;
+-    this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry;
+-    this.properties = feature.tags;
+-    this.extent = EXTENT;
+-}
+-
+-FeatureWrapper.prototype.loadGeometry = function() {
+-    var rings = this.rawGeometry;
+-    this.geometry = [];
+-
+-    for (var i = 0; i < rings.length; i++) {
+-        var ring = rings[i],
+-            newRing = [];
+-        for (var j = 0; j < ring.length; j++) {
+-            newRing.push(new Point(ring[j][0], ring[j][1]));
++    "icon-ignore-placement": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, other symbols can be visible even if they collide with the icon.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-        this.geometry.push(newRing);
+-    }
+-    return this.geometry;
+-};
+-
+-FeatureWrapper.prototype.bbox = function() {
+-    if (!this.geometry) this.loadGeometry();
+-
+-    var rings = this.geometry,
+-        x1 = Infinity,
+-        x2 = -Infinity,
+-        y1 = Infinity,
+-        y2 = -Infinity;
+-
+-    for (var i = 0; i < rings.length; i++) {
+-        var ring = rings[i];
+-
+-        for (var j = 0; j < ring.length; j++) {
+-            var coord = ring[j];
+-
+-            x1 = Math.min(x1, coord.x);
+-            x2 = Math.max(x2, coord.x);
+-            y1 = Math.min(y1, coord.y);
+-            y2 = Math.max(y2, coord.y);
++      }
++    },
++    "icon-optional": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.",
++      "requires": [
++        "icon-image",
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-    }
+-
+-    return [x1, y1, x2, y2];
+-};
+-
+-FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON;
+-
+-},{"../data/bucket":247,"point-geometry":404,"vector-tile":413}],276:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var Tile = require('./tile');
+-var TileCoord = require('./tile_coord');
+-var LngLat = require('../geo/lng_lat');
+-var Point = require('point-geometry');
+-var Evented = require('../util/evented');
+-var ajax = require('../util/ajax');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
+-var Buffer = require('../data/buffer');
+-var VertexArrayObject = require('../render/vertex_array_object');
+-
+-module.exports = ImageSource;
+-
+-/**
+- * Create an Image source instance given an options object
+- * @class ImageSource
+- * @param {Object} [options]
+- * @param {string} options.url A string URL of an image file
+- * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
+- * @example
+- * var sourceObj = new mapboxgl.ImageSource({
+- *    url: 'https://www.mapbox.com/images/foo.png',
+- *    coordinates: [
+- *        [-76.54335737228394, 39.18579907229748],
+- *        [-76.52803659439087, 39.1838364847587],
+- *        [-76.5295386314392, 39.17683392507606],
+- *        [-76.54520273208618, 39.17876344106642]
+- *    ]
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
+- */
+-function ImageSource(options) {
+-    this.urls = options.urls;
+-    this.coordinates = options.coordinates;
+-
+-    ajax.getImage(options.url, function(err, image) {
+-        // @TODO handle errors via event.
+-        if (err) return;
+-
+-        this.image = image;
+-
+-        this.image.addEventListener('load', function() {
+-            this.map._rerender();
+-        }.bind(this));
+-
+-        this._loaded = true;
+-
+-        if (this.map) {
+-            this.setCoordinates(options.coordinates);
++      }
++    },
++    "icon-rotation-alignment": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "default": "viewport",
++      "doc": "Orientation of icon when map is rotated.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-    }.bind(this));
+-}
+-
+-ImageSource.prototype = util.inherit(Evented, /** @lends ImageSource.prototype */ {
+-    onAdd: function(map) {
+-        this.map = map;
+-        if (this.image) {
+-            this.setCoordinates(this.coordinates);
++      }
++    },
++    "icon-size": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Scale factor for icon. 1 is original size, 3 triples the size.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    /**
+-     * Update image coordinates and rerender map
+-     *
+-     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
+-     * @returns {ImageSource} this
+-     */
+-    setCoordinates: function(coordinates) {
+-        this.coordinates = coordinates;
+-
+-        // Calculate which mercator tile is suitable for rendering the image in
+-        // and create a buffer with the corner coordinates. These coordinates
+-        // may be outside the tile, because raster tiles aren't clipped when rendering.
+-
+-        var map = this.map;
+-        var cornerZ0Coords = coordinates.map(function(coord) {
+-            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
+-        });
+-
+-        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
+-        centerCoord.column = Math.round(centerCoord.column);
+-        centerCoord.row = Math.round(centerCoord.row);
+-
+-        var tileCoords = cornerZ0Coords.map(function(coord) {
+-            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
+-            return new Point(
+-                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
+-                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
+-        });
+-
+-        var maxInt16 = 32767;
+-        var array = new RasterBoundsArray();
+-        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
+-        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
+-        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
+-        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
+-
+-        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
+-        this.tile.buckets = {};
+-
+-        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
+-        this.tile.boundsVAO = new VertexArrayObject();
+-
+-        this.fire('change');
+-
+-        return this;
++    "icon-text-fit": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": false,
++      "values": [
++        "none",
++        "both",
++        "width",
++        "height"
++      ],
++      "default": "none",
++      "doc": "Position and scale an icon by the its corresponding text.",
++      "requires": [
++        "icon-image",
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
++        }
++      }
+     },
+-
+-    loaded: function() {
+-        return this.image && this.image.complete;
++    "icon-text-fit-padding": {
++      "type": "array",
++      "value": "number",
++      "length": 4,
++      "default": [
++        0,
++        0,
++        0,
++        0
++      ],
++      "units": "pixels",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Size of padding area around the text-fit size in clockwise order: top, right, bottom, left.",
++      "requires": [
++        "icon-image",
++        "icon-text-fit",
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
++        }
++      }
+     },
+-
+-    update: function() {
+-        // noop
++    "icon-image": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "A string with {tokens} replaced, referencing the data property to pull from.",
++      "tokens": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    reload: function() {
+-        // noop
++    "icon-rotate": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "units": "degrees",
++      "doc": "Rotates the icon clockwise.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.21.0"
++        }
++      }
+     },
+-
+-    prepare: function() {
+-        if (!this._loaded || !this.loaded()) return;
+-
+-        var painter = this.map.painter;
+-        var gl = painter.gl;
+-
+-        if (!this.tile.texture) {
+-            this.tile.texture = gl.createTexture();
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
+-        } else {
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
++    "icon-padding": {
++      "type": "number",
++      "default": 2,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "units": "pixels",
++      "doc": "Size of the additional area around the icon bounding box used for detecting symbol collisions.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    getVisibleCoordinates: function() {
+-        if (this.tile) return [this.tile.coord];
+-        else return [];
+-    },
+-
+-    getTile: function() {
+-        return this.tile;
++    "icon-keep-upright": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the icon may be flipped to prevent it from being rendered upside-down.",
++      "requires": [
++        "icon-image",
++        {
++          "icon-rotation-alignment": "map"
++        },
++        {
++          "symbol-placement": "line"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    serialize: function() {
+-        return {
+-            type: 'image',
+-            urls: this.urls,
+-            coordinates: this.coordinates
+-        };
+-    }
+-});
+-
+-},{"../data/bucket":247,"../data/buffer":252,"../geo/lng_lat":256,"../render/draw_raster":267,"../render/vertex_array_object":273,"../util/ajax":334,"../util/evented":341,"../util/util":349,"./tile":280,"./tile_coord":281,"point-geometry":404}],277:[function(require,module,exports){
+-'use strict';
+-
+-var Bucket = require('../data/bucket');
+-
+-/**
+- * Converts a pixel value at a the given zoom level to tile units.
+- *
+- * The shaders mostly calculate everything in tile units so style
+- * properties need to be converted from pixels to tile units using this.
+- *
+- * For example, a translation by 30 pixels at zoom 6.5 will be a
+- * translation by pixelsToTileUnits(30, 6.5) tile units.
+- *
+- * @param {object} tile a {Tile object} will work well, but any object that follows the format {coord: {TileCord object}, tileSize: {number}} will work
+- * @param {number} pixelValue
+- * @param {number} z
+- * @returns {number} value in tile units
+- * @private
+- */
+-module.exports = function(tile, pixelValue, z) {
+-    return pixelValue * (Bucket.EXTENT / (tile.tileSize * Math.pow(2, z - tile.coord.z)));
+-};
+-
+-
+-},{"../data/bucket":247}],278:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var Evented = require('../util/evented');
+-var Source = require('./source');
+-var normalizeURL = require('../util/mapbox').normalizeTileURL;
+-
+-module.exports = RasterTileSource;
+-
+-function RasterTileSource(options) {
+-    util.extend(this, util.pick(options, ['url', 'tileSize']));
+-
+-    Source._loadTileJSON.call(this, options);
+-}
+-
+-RasterTileSource.prototype = util.inherit(Evented, {
+-    minzoom: 0,
+-    maxzoom: 22,
+-    roundZoom: true,
+-    tileSize: 512,
+-    _loaded: false,
+-
+-    onAdd: function(map) {
+-        this.map = map;
++    "icon-offset": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    loaded: function() {
+-        return this._pyramid && this._pyramid.loaded();
++    "text-pitch-alignment": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Aligns text to the plane of the `viewport` or the `map` when the map is pitched. Matches `text-rotation-alignment` if unspecified.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
++        }
++      }
+     },
+-
+-    update: function(transform) {
+-        if (this._pyramid) {
+-            this._pyramid.update(this.used, transform, this.map.style.rasterFadeDuration);
++    "text-rotation-alignment": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "default": "viewport",
++      "doc": "Orientation of text when map is rotated.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    reload: function() {
+-        // noop
++    "text-field": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": "",
++      "tokens": true,
++      "doc": "Value to use for a text label. Feature properties are specified using tokens like {field_name}.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    serialize: function() {
+-        return {
+-            type: 'raster',
+-            url: this.url,
+-            tileSize: this.tileSize
+-        };
++    "text-font": {
++      "type": "array",
++      "value": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": ["Open Sans Regular", "Arial Unicode MS Regular"],
++      "doc": "Font stack to use for displaying text.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    getVisibleCoordinates: Source._getVisibleCoordinates,
+-    getTile: Source._getTile,
+-
+-    _loadTile: function(tile) {
+-        var url = normalizeURL(tile.coord.url(this.tiles), this.url, this.tileSize);
+-
+-        tile.request = ajax.getImage(url, done.bind(this));
+-
+-        function done(err, img) {
+-            delete tile.request;
+-
+-            if (tile.aborted)
+-                return;
+-
+-            if (err) {
+-                tile.errored = true;
+-                this.fire('tile.error', {tile: tile, error: err});
+-                return;
+-            }
+-
+-            var gl = this.map.painter.gl;
+-            tile.texture = this.map.painter.getTexture(img.width);
+-            if (tile.texture) {
+-                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
+-                gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, img);
+-            } else {
+-                tile.texture = gl.createTexture();
+-                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-                gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
+-                gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, img);
+-                tile.texture.size = img.width;
+-            }
+-            gl.generateMipmap(gl.TEXTURE_2D);
+-
+-            tile.timeAdded = new Date().getTime();
+-            this.map.animationLoop.set(this.style.rasterFadeDuration);
+-
+-            tile.source = this;
+-            tile.loaded = true;
+-
+-            this.fire('tile.load', {tile: tile});
++    "text-size": {
++      "type": "number",
++      "default": 16,
++      "minimum": 0,
++      "units": "pixels",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Font size.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    _abortTile: function(tile) {
+-        tile.aborted = true;
+-
+-        if (tile.request) {
+-            tile.request.abort();
+-            delete tile.request;
++    "text-max-width": {
++      "type": "number",
++      "default": 10,
++      "minimum": 0,
++      "units": "em",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "The maximum line width for text wrapping.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    _addTile: function(tile) {
+-        this.fire('tile.add', {tile: tile});
++    "text-line-height": {
++      "type": "number",
++      "default": 1.2,
++      "units": "em",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Text leading value for multi-line text.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _removeTile: function(tile) {
+-        this.fire('tile.remove', {tile: tile});
++    "text-letter-spacing": {
++      "type": "number",
++      "default": 0,
++      "units": "em",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Text tracking amount.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _unloadTile: function(tile) {
+-        if (tile.texture) this.map.painter.saveTexture(tile.texture);
+-    }
+-});
+-
+-},{"../util/ajax":334,"../util/evented":341,"../util/mapbox":346,"../util/util":349,"./source":279}],279:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var browser = require('../util/browser');
+-var TilePyramid = require('./tile_pyramid');
+-var normalizeURL = require('../util/mapbox').normalizeSourceURL;
+-var TileCoord = require('./tile_coord');
+-
+-exports._loadTileJSON = function(options) {
+-    var loaded = function(err, tileJSON) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
++    "text-justify": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "left",
++        "center",
++        "right"
++      ],
++      "default": "center",
++      "doc": "Text justification options.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        util.extend(this, util.pick(tileJSON,
+-            ['tiles', 'minzoom', 'maxzoom', 'attribution']));
+-
+-        if (tileJSON.vector_layers) {
+-            this.vectorLayers = tileJSON.vector_layers;
+-            this.vectorLayerIds = this.vectorLayers.map(function(layer) { return layer.id; });
++      }
++    },
++    "text-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "center",
++        "left",
++        "right",
++        "top",
++        "bottom",
++        "top-left",
++        "top-right",
++        "bottom-left",
++        "bottom-right"
++      ],
++      "default": "center",
++      "doc": "Part of the text placed closest to the anchor.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        this._pyramid = new TilePyramid({
+-            tileSize: this.tileSize,
+-            minzoom: this.minzoom,
+-            maxzoom: this.maxzoom,
+-            roundZoom: this.roundZoom,
+-            reparseOverscaled: this.reparseOverscaled,
+-            load: this._loadTile.bind(this),
+-            abort: this._abortTile.bind(this),
+-            unload: this._unloadTile.bind(this),
+-            add: this._addTile.bind(this),
+-            remove: this._removeTile.bind(this),
+-            redoPlacement: this._redoTilePlacement ? this._redoTilePlacement.bind(this) : undefined
+-        });
+-
+-        this.fire('load');
+-    }.bind(this);
+-
+-    if (options.url) {
+-        ajax.getJSON(normalizeURL(options.url), loaded);
+-    } else {
+-        browser.frame(loaded.bind(this, null, options));
+-    }
+-};
+-
+-exports.redoPlacement = function() {
+-    if (!this._pyramid) {
+-        return;
+-    }
+-
+-    var ids = this._pyramid.orderedIDs();
+-    for (var i = 0; i < ids.length; i++) {
+-        var tile = this._pyramid.getTile(ids[i]);
+-        this._redoTilePlacement(tile);
+-    }
+-};
+-
+-exports._getTile = function(coord) {
+-    return this._pyramid.getTile(coord.id);
+-};
+-
+-exports._getVisibleCoordinates = function() {
+-    if (!this._pyramid) return [];
+-    else return this._pyramid.renderedIDs().map(TileCoord.fromID);
+-};
+-
+-function sortTilesIn(a, b) {
+-    var coordA = a.tile.coord;
+-    var coordB = b.tile.coord;
+-    return (coordA.z - coordB.z) || (coordA.y - coordB.y) || (coordA.x - coordB.x);
+-}
+-
+-function mergeRenderedFeatureLayers(tiles) {
+-    var result = tiles[0] || {};
+-    for (var i = 1; i < tiles.length; i++) {
+-        var tile = tiles[i];
+-        for (var layerID in tile) {
+-            var tileFeatures = tile[layerID];
+-            var resultFeatures = result[layerID];
+-            if (resultFeatures === undefined) {
+-                resultFeatures = result[layerID] = tileFeatures;
+-            } else {
+-                for (var f = 0; f < tileFeatures.length; f++) {
+-                    resultFeatures.push(tileFeatures[f]);
+-                }
+-            }
++      }
++    },
++    "text-max-angle": {
++      "type": "number",
++      "default": 45,
++      "units": "degrees",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Maximum angle change between adjacent characters.",
++      "requires": [
++        "text-field",
++        {
++          "symbol-placement": "line"
+         }
+-    }
+-    return result;
+-}
+-
+-exports._queryRenderedVectorFeatures = function(queryGeometry, params, zoom, bearing) {
+-    if (!this._pyramid)
+-        return {};
+-
+-    var tilesIn = this._pyramid.tilesIn(queryGeometry);
+-
+-    tilesIn.sort(sortTilesIn);
+-
+-    var styleLayers = this.map.style._layers;
+-
+-    var renderedFeatureLayers = [];
+-    for (var r = 0; r < tilesIn.length; r++) {
+-        var tileIn = tilesIn[r];
+-        if (!tileIn.tile.featureIndex) continue;
+-
+-        renderedFeatureLayers.push(tileIn.tile.featureIndex.query({
+-            queryGeometry: tileIn.queryGeometry,
+-            scale: tileIn.scale,
+-            tileSize: tileIn.tile.tileSize,
+-            bearing: bearing,
+-            params: params
+-        }, styleLayers));
+-    }
+-    return mergeRenderedFeatureLayers(renderedFeatureLayers);
+-};
+-
+-exports._querySourceFeatures = function(params) {
+-    if (!this._pyramid) {
+-        return [];
+-    }
+-
+-    var pyramid = this._pyramid;
+-    var tiles = pyramid.renderedIDs().map(function(id) {
+-        return pyramid.getTile(id);
+-    });
+-
+-    var result = [];
+-
+-    var dataTiles = {};
+-    for (var i = 0; i < tiles.length; i++) {
+-        var tile = tiles[i];
+-        var dataID = new TileCoord(Math.min(tile.sourceMaxZoom, tile.coord.z), tile.coord.x, tile.coord.y, 0).id;
+-        if (!dataTiles[dataID]) {
+-            dataTiles[dataID] = true;
+-            tile.querySourceFeatures(result, params);
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-    }
+-
+-    return result;
+-};
+-
+-/*
+- * Create a tiled data source instance given an options object
+- *
+- * @param {Object} options
+- * @param {string} options.type Either `raster` or `vector`.
+- * @param {string} options.url A tile source URL. This should either be `mapbox://{mapid}` or a full `http[s]` url that points to a TileJSON endpoint.
+- * @param {Array} options.tiles An array of tile sources. If `url` is not specified, `tiles` can be used instead to specify tile sources, as in the TileJSON spec. Other TileJSON keys such as `minzoom` and `maxzoom` can be specified in a source object if `tiles` is used.
+- * @param {string} options.id An optional `id` to assign to the source
+- * @param {number} [options.tileSize=512] Optional tile size (width and height in pixels, assuming tiles are square). This option is only configurable for raster sources
+- * @example
+- * var sourceObj = new mapboxgl.Source.create({
+- *    type: 'vector',
+- *    url: 'mapbox://mapbox.mapbox-streets-v5'
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
+- */
+-exports.create = function(source) {
+-    // This is not at file scope in order to avoid a circular require.
+-    var sources = {
+-        vector: require('./vector_tile_source'),
+-        raster: require('./raster_tile_source'),
+-        geojson: require('./geojson_source'),
+-        video: require('./video_source'),
+-        image: require('./image_source')
+-    };
+-
+-    return exports.is(source) ? source : new sources[source.type](source);
+-};
+-
+-exports.is = function(source) {
+-    // This is not at file scope in order to avoid a circular require.
+-    var sources = {
+-        vector: require('./vector_tile_source'),
+-        raster: require('./raster_tile_source'),
+-        geojson: require('./geojson_source'),
+-        video: require('./video_source'),
+-        image: require('./image_source')
+-    };
+-
+-    for (var type in sources) {
+-        if (source instanceof sources[type]) {
+-            return true;
++      }
++    },
++    "text-rotate": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "units": "degrees",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Rotates the text clockwise.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-    }
+-
+-    return false;
+-};
+-
+-},{"../util/ajax":334,"../util/browser":335,"../util/mapbox":346,"../util/util":349,"./geojson_source":274,"./image_source":276,"./raster_tile_source":278,"./tile_coord":281,"./tile_pyramid":282,"./vector_tile_source":283,"./video_source":284}],280:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var Bucket = require('../data/bucket');
+-var FeatureIndex = require('../data/feature_index');
+-var vt = require('vector-tile');
+-var Protobuf = require('pbf');
+-var GeoJSONFeature = require('../util/vectortile_to_geojson');
+-var featureFilter = require('feature-filter');
+-var CollisionTile = require('../symbol/collision_tile');
+-var CollisionBoxArray = require('../symbol/collision_box');
+-
+-module.exports = Tile;
+-
+-/**
+- * A tile object is the combination of a Coordinate, which defines
+- * its place, as well as a unique ID and data tracking for its content
+- *
+- * @param {Coordinate} coord
+- * @param {number} size
+- * @private
+- */
+-function Tile(coord, size, sourceMaxZoom) {
+-    this.coord = coord;
+-    this.uid = util.uniqueId();
+-    this.loaded = false; // TODO rename loaded
+-    this.isUnloaded = false;
+-    this.uses = 0;
+-    this.tileSize = size;
+-    this.sourceMaxZoom = sourceMaxZoom;
+-    this.buckets = {};
+-}
+-
+-Tile.prototype = {
+-
+-    /**
+-     * Given a data object with a 'buffers' property, load it into
+-     * this tile's elementGroups and buffers properties and set loaded
+-     * to true. If the data is null, like in the case of an empty
+-     * GeoJSON tile, no-op but still set loaded to true.
+-     * @param {Object} data
+-     * @returns {undefined}
+-     * @private
+-     */
+-    loadVectorData: function(data, style) {
+-        this.loaded = true;
+-
+-        // empty GeoJSON tile
+-        if (!data) return;
+-
+-        this.collisionBoxArray = new CollisionBoxArray(data.collisionBoxArray);
+-        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
+-        this.featureIndex = new FeatureIndex(data.featureIndex, data.rawTileData, this.collisionTile);
+-        this.rawTileData = data.rawTileData;
+-        this.buckets = unserializeBuckets(data.buckets, style);
++      }
+     },
+-
+-    /**
+-     * given a data object and a GL painter, destroy and re-create
+-     * all of its buffers.
+-     * @param {Object} data
+-     * @param {Object} painter
+-     * @returns {undefined}
+-     * @private
+-     */
+-    reloadSymbolData: function(data, painter, style) {
+-        if (this.isUnloaded) return;
+-
+-        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
+-        this.featureIndex.setCollisionTile(this.collisionTile);
+-
+-        // Destroy and delete existing symbol buckets
+-        for (var id in this.buckets) {
+-            var bucket = this.buckets[id];
+-            if (bucket.type === 'symbol') {
+-                bucket.destroy(painter.gl);
+-                delete this.buckets[id];
+-            }
++    "text-padding": {
++      "type": "number",
++      "default": 2,
++      "minimum": 0,
++      "units": "pixels",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Size of the additional area around the text bounding box used for detecting symbol collisions.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        // Add new symbol buckets
+-        util.extend(this.buckets, unserializeBuckets(data.buckets, style));
++      }
+     },
+-
+-    /**
+-     * Make sure that this tile doesn't own any data within a given
+-     * painter, so that it doesn't consume any memory or maintain
+-     * any references to the painter.
+-     * @param {Object} painter gl painter object
+-     * @returns {undefined}
+-     * @private
+-     */
+-    unloadVectorData: function(painter) {
+-        for (var id in this.buckets) {
+-            var bucket = this.buckets[id];
+-            bucket.destroy(painter.gl);
++    "text-keep-upright": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": true,
++      "doc": "If true, the text may be flipped vertically to prevent it from being rendered upside-down.",
++      "requires": [
++        "text-field",
++        {
++          "text-rotation-alignment": "map"
++        },
++        {
++          "symbol-placement": "line"
+         }
+-
+-        this.collisionBoxArray = null;
+-        this.collisionTile = null;
+-        this.featureIndex = null;
+-        this.rawTileData = null;
+-        this.buckets = null;
+-        this.loaded = false;
+-        this.isUnloaded = true;
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    redoPlacement: function(source) {
+-        if (!this.loaded || this.redoingPlacement) {
+-            this.redoWhenDone = true;
+-            return;
++    "text-transform": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "none",
++        "uppercase",
++        "lowercase"
++      ],
++      "default": "none",
++      "doc": "Specifies how to capitalize text, similar to the CSS `text-transform` property.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        this.redoingPlacement = true;
+-
+-        source.dispatcher.send('redo placement', {
+-            uid: this.uid,
+-            source: source.id,
+-            angle: source.map.transform.angle,
+-            pitch: source.map.transform.pitch,
+-            showCollisionBoxes: source.map.showCollisionBoxes
+-        }, done.bind(this), this.workerID);
+-
+-        function done(_, data) {
+-            this.reloadSymbolData(data, source.map.painter, source.map.style);
+-            source.fire('tile.load', {tile: this});
+-
+-            this.redoingPlacement = false;
+-            if (this.redoWhenDone) {
+-                this.redoPlacement(source);
+-                this.redoWhenDone = false;
+-            }
++      }
++    },
++    "text-offset": {
++      "type": "array",
++      "doc": "Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
++      "value": "number",
++      "units": "ems",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    getBucket: function(layer) {
+-        return this.buckets && this.buckets[layer.ref || layer.id];
++    "text-allow-overlap": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, the text will be visible even if it collides with other previously drawn symbols.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    querySourceFeatures: function(result, params) {
+-        if (!this.rawTileData) return;
+-
+-        if (!this.vtLayers) {
+-            this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
++    "text-ignore-placement": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, other symbols can be visible even if they collide with the text.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        var layer = this.vtLayers._geojsonTileLayer || this.vtLayers[params.sourceLayer];
+-
+-        if (!layer) return;
+-
+-        var filter = featureFilter(params.filter);
+-        var coord = { z: this.coord.z, x: this.coord.x, y: this.coord.y };
+-
+-        for (var i = 0; i < layer.length; i++) {
+-            var feature = layer.feature(i);
+-            if (filter(feature)) {
+-                var geojsonFeature = new GeoJSONFeature(feature, this.coord.z, this.coord.x, this.coord.y);
+-                geojsonFeature.tile = coord;
+-                result.push(geojsonFeature);
+-            }
++      }
++    },
++    "text-optional": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": false,
++      "doc": "If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not.",
++      "requires": [
++        "text-field",
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
++    },
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     }
+-};
+-
+-function unserializeBuckets(input, style) {
+-    var output = {};
+-    for (var i = 0; i < input.length; i++) {
+-        var layer = style.getLayer(input[i].layerId);
+-        if (!layer) continue;
+-
+-        var bucket = Bucket.create(util.extend({
+-            layer: layer,
+-            childLayers: input[i].childLayerIds
+-                .map(style.getLayer.bind(style))
+-                .filter(function(layer) { return layer; })
+-        }, input[i]));
+-        output[bucket.id] = bucket;
+-    }
+-    return output;
+-}
+-
+-},{"../data/bucket":247,"../data/feature_index":253,"../symbol/collision_box":306,"../symbol/collision_tile":308,"../util/util":349,"../util/vectortile_to_geojson":350,"feature-filter":352,"pbf":402,"vector-tile":413}],281:[function(require,module,exports){
+-'use strict';
+-
+-var assert = require('assert');
+-var Coordinate = require('../geo/coordinate');
+-
+-module.exports = TileCoord;
+-
+-function TileCoord(z, x, y, w) {
+-    assert(!isNaN(z) && z >= 0 && z % 1 === 0);
+-    assert(!isNaN(x) && x >= 0 && x % 1 === 0);
+-    assert(!isNaN(y) && y >= 0 && y % 1 === 0);
+-
+-    if (isNaN(w)) w = 0;
+-
+-    this.z = +z;
+-    this.x = +x;
+-    this.y = +y;
+-    this.w = +w;
+-
+-    // calculate id
+-    w *= 2;
+-    if (w < 0) w = w * -1 - 1;
+-    var dim = 1 << this.z;
+-    this.id = ((dim * dim * w + dim * this.y + this.x) * 32) + this.z;
+-
+-    // for caching pos matrix calculation when rendering
+-    this.posMatrix = null;
+-}
+-
+-TileCoord.prototype.toString = function() {
+-    return this.z + "/" + this.x + "/" + this.y;
+-};
+-
+-TileCoord.prototype.toCoordinate = function(sourceMaxZoom) {
+-    var zoom = Math.min(this.z, sourceMaxZoom);
+-    var tileScale = Math.pow(2, zoom);
+-    var row = this.y;
+-    var column = this.x + tileScale * this.w;
+-    return new Coordinate(column, row, zoom);
+-};
+-
+-// Parse a packed integer id into a TileCoord object
+-TileCoord.fromID = function(id) {
+-    var z = id % 32, dim = 1 << z;
+-    var xy = ((id - z) / 32);
+-    var x = xy % dim, y = ((xy - x) / dim) % dim;
+-    var w = Math.floor(xy / (dim * dim));
+-    if (w % 2 !== 0) w = w * -1 - 1;
+-    w /= 2;
+-    return new TileCoord(z, x, y, w);
+-};
+-
+-// given a list of urls, choose a url template and return a tile URL
+-TileCoord.prototype.url = function(urls, sourceMaxZoom) {
+-    return urls[(this.x + this.y) % urls.length]
+-        .replace('{prefix}', (this.x % 16).toString(16) + (this.y % 16).toString(16))
+-        .replace('{z}', Math.min(this.z, sourceMaxZoom || this.z))
+-        .replace('{x}', this.x)
+-        .replace('{y}', this.y);
+-};
+-
+-// Return the coordinate of the parent tile
+-TileCoord.prototype.parent = function(sourceMaxZoom) {
+-    if (this.z === 0) return null;
+-
+-    // the id represents an overscaled tile, return the same coordinates with a lower z
+-    if (this.z > sourceMaxZoom) {
+-        return new TileCoord(this.z - 1, this.x, this.y, this.w);
+-    }
+-
+-    return new TileCoord(this.z - 1, Math.floor(this.x / 2), Math.floor(this.y / 2), this.w);
+-};
+-
+-TileCoord.prototype.wrapped = function() {
+-    return new TileCoord(this.z, this.x, this.y, 0);
+-};
+-
+-// Return the coordinates of the tile's children
+-TileCoord.prototype.children = function(sourceMaxZoom) {
+-
+-    if (this.z >= sourceMaxZoom) {
+-        // return a single tile coord representing a an overscaled tile
+-        return [new TileCoord(this.z + 1, this.x, this.y, this.w)];
+-    }
+-
+-    var z = this.z + 1;
+-    var x = this.x * 2;
+-    var y = this.y * 2;
+-    return [
+-        new TileCoord(z, x, y, this.w),
+-        new TileCoord(z, x + 1, y, this.w),
+-        new TileCoord(z, x, y + 1, this.w),
+-        new TileCoord(z, x + 1, y + 1, this.w)
+-    ];
+-};
+-
+-// Taken from polymaps src/Layer.js
+-// https://github.com/simplegeo/polymaps/blob/master/src/Layer.js#L333-L383
+-
+-function edge(a, b) {
+-    if (a.row > b.row) { var t = a; a = b; b = t; }
+-    return {
+-        x0: a.column,
+-        y0: a.row,
+-        x1: b.column,
+-        y1: b.row,
+-        dx: b.column - a.column,
+-        dy: b.row - a.row
+-    };
+-}
+-
+-function scanSpans(e0, e1, ymin, ymax, scanLine) {
+-    var y0 = Math.max(ymin, Math.floor(e1.y0));
+-    var y1 = Math.min(ymax, Math.ceil(e1.y1));
+-
+-    // sort edges by x-coordinate
+-    if ((e0.x0 === e1.x0 && e0.y0 === e1.y0) ?
+-            (e0.x0 + e1.dy / e0.dy * e0.dx < e1.x1) :
+-            (e0.x1 - e1.dy / e0.dy * e0.dx < e1.x0)) {
+-        var t = e0; e0 = e1; e1 = t;
+-    }
+-
+-    // scan lines!
+-    var m0 = e0.dx / e0.dy;
+-    var m1 = e1.dx / e1.dy;
+-    var d0 = e0.dx > 0; // use y + 1 to compute x0
+-    var d1 = e1.dx < 0; // use y + 1 to compute x1
+-    for (var y = y0; y < y1; y++) {
+-        var x0 = m0 * Math.max(0, Math.min(e0.dy, y + d0 - e0.y0)) + e0.x0;
+-        var x1 = m1 * Math.max(0, Math.min(e1.dy, y + d1 - e1.y0)) + e1.x0;
+-        scanLine(Math.floor(x1), Math.ceil(x0), y);
++  },
++  "layout_raster": {
++    "visibility": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "values": [
++        "visible",
++        "none"
++      ],
++      "default": "visible",
++      "doc": "The display of this layer. `none` hides this layer.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     }
+-}
+-
+-function scanTriangle(a, b, c, ymin, ymax, scanLine) {
+-    var ab = edge(a, b),
+-        bc = edge(b, c),
+-        ca = edge(c, a);
+-
+-    var t;
+-
+-    // sort edges by y-length
+-    if (ab.dy > bc.dy) { t = ab; ab = bc; bc = t; }
+-    if (ab.dy > ca.dy) { t = ab; ab = ca; ca = t; }
+-    if (bc.dy > ca.dy) { t = bc; bc = ca; ca = t; }
+-
+-    // scan span! scan span!
+-    if (ab.dy) scanSpans(ca, ab, ymin, ymax, scanLine);
+-    if (bc.dy) scanSpans(ca, bc, ymin, ymax, scanLine);
+-}
+-
+-TileCoord.cover = function(z, bounds, actualZ) {
+-    var tiles = 1 << z;
+-    var t = {};
+-
+-    function scanLine(x0, x1, y) {
+-        var x, wx, coord;
+-        if (y >= 0 && y <= tiles) {
+-            for (x = x0; x < x1; x++) {
+-                wx = (x % tiles + tiles) % tiles;
+-                coord = new TileCoord(actualZ, wx, y, Math.floor(x / tiles));
+-                t[coord.id] = coord;
+-            }
++  },
++  "filter": {
++    "type": "array",
++    "value": "*",
++    "doc": "A filter selects specific features from a layer."
++  },
++  "filter_operator": {
++    "type": "enum",
++    "values": [
++      "==",
++      "!=",
++      ">",
++      ">=",
++      "<",
++      "<=",
++      "in",
++      "!in",
++      "all",
++      "any",
++      "none",
++      "has",
++      "!has"
++    ],
++    "doc": "The filter operator."
++  },
++  "geometry_type": {
++    "type": "enum",
++    "values": [
++      "Point",
++      "LineString",
++      "Polygon"
++    ],
++    "doc": "The geometry type for the filter to select."
++  },
++  "color_operation": {
++    "type": "enum",
++    "values": [
++      "lighten",
++      "saturate",
++      "spin",
++      "fade",
++      "mix"
++    ],
++    "doc": "A color operation to apply."
++  },
++  "function": {
++    "stops": {
++      "type": "array",
++      "required": true,
++      "doc": "An array of stops.",
++      "value": "function_stop"
++    },
++    "base": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "doc": "The exponential base of the interpolation curve. It controls the rate at which the result increases. Higher values make the result increase more towards the high end of the range. With `1` the stops are interpolated linearly."
++    },
++    "property": {
++      "type": "string",
++      "doc": "The name of a global property or feature property to use as the function input.",
++      "default": "$zoom"
++    },
++    "type": {
++      "type": "enum",
++      "values": [
++          "exponential",
++          "interval",
++          "categorical"
++      ],
++      "doc": "The interpolation strategy to use in function evaluation.",
++      "default": "exponential"
++    }
++  },
++  "function_stop": {
++    "type": "array",
++    "minimum": 0,
++    "maximum": 22,
++    "value": [
++      "number",
++      "color"
++    ],
++    "length": 2,
++    "doc": "Zoom level and value pair."
++  },
++  "paint": [
++    "paint_fill",
++    "paint_line",
++    "paint_circle",
++    "paint_symbol",
++    "paint_raster",
++    "paint_background"
++  ],
++  "paint_fill": {
++    "fill-antialias": {
++      "type": "boolean",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "default": true,
++      "doc": "Whether or not the fill should be antialiased.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "fill-opacity": {
++      "type": "number",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "doc": "The opacity of the entire fill layer. In contrast to the fill-color, this value will also affect the 1px stroke around the fill, if the stroke is used.",
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.21.0"
++        }
++      }
++    },
++    "fill-color": {
++      "type": "color",
++      "default": "#000000",
++      "doc": "The color of the filled part of this layer. This color can be specified as rgba with an alpha component and the color's opacity will not affect the opacity of the 1px stroke, if it is used.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "fill-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.19.0"
++        }
++      }
++    },
++    "fill-outline-color": {
++      "type": "color",
++      "doc": "The outline color of the fill. Matches the value of `fill-color` if unspecified.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "fill-pattern"
++        },
++        {
++          "fill-antialias": true
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.19.0"
++        }
++      }
++    },
++    "fill-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "fill-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
++      "default": "map",
++      "requires": [
++        "fill-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "fill-pattern": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     }
+-
+-    // Divide the screen up in two triangles and scan each of them:
+-    // +---/
+-    // | / |
+-    // /---+
+-    scanTriangle(bounds[0], bounds[1], bounds[2], 0, tiles, scanLine);
+-    scanTriangle(bounds[2], bounds[3], bounds[0], 0, tiles, scanLine);
+-
+-    return Object.keys(t).map(function(id) {
+-        return t[id];
+-    });
+-};
+-
+-},{"../geo/coordinate":255,"assert":52}],282:[function(require,module,exports){
+-'use strict';
+-
+-var Tile = require('./tile');
+-var TileCoord = require('./tile_coord');
+-var Point = require('point-geometry');
+-var Cache = require('../util/lru_cache');
+-var Coordinate = require('../geo/coordinate');
+-var util = require('../util/util');
+-var EXTENT = require('../data/bucket').EXTENT;
+-
+-module.exports = TilePyramid;
+-
+-/**
+- * A tile pyramid is a specialized cache and datastructure
+- * that contains tiles. It's used by sources to manage their
+- * data.
+- *
+- * @param {Object} options
+- * @param {number} options.tileSize
+- * @param {number} options.minzoom
+- * @param {number} options.maxzoom
+- * @private
+- */
+-function TilePyramid(options) {
+-    this.tileSize = options.tileSize;
+-    this.minzoom = options.minzoom;
+-    this.maxzoom = options.maxzoom;
+-    this.roundZoom = options.roundZoom;
+-    this.reparseOverscaled = options.reparseOverscaled;
+-
+-    this._load = options.load;
+-    this._abort = options.abort;
+-    this._unload = options.unload;
+-    this._add = options.add;
+-    this._remove = options.remove;
+-    this._redoPlacement = options.redoPlacement;
+-
+-    this._tiles = {};
+-    this._cache = new Cache(0, function(tile) { return this._unload(tile); }.bind(this));
+-
+-    this._filterRendered = this._filterRendered.bind(this);
+-}
+-
+-
+-TilePyramid.maxOverzooming = 10;
+-TilePyramid.maxUnderzooming = 3;
+-
+-TilePyramid.prototype = {
+-    /**
+-     * Confirm that every tracked tile is loaded.
+-     * @returns {boolean} whether all tiles are loaded.
+-     * @private
+-     */
+-    loaded: function() {
+-        for (var t in this._tiles) {
+-            if (!this._tiles[t].loaded && !this._tiles[t].errored)
+-                return false;
++  },
++  "paint_line": {
++    "line-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the line will be drawn.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-        return true;
++      }
+     },
+-
+-    /**
+-     * Return all tile ids ordered with z-order, and cast to numbers
+-     * @returns {Array<number>} ids
+-     * @private
+-     */
+-    orderedIDs: function() {
+-        return Object.keys(this._tiles).map(Number).sort(compareKeyZoom);
++    "line-color": {
++      "type": "color",
++      "doc": "The color with which the line will be drawn.",
++      "default": "#000000",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "line-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.23.0"
++        }
++      }
+     },
+-
+-    renderedIDs: function() {
+-        return this.orderedIDs().filter(this._filterRendered);
++    "line-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _filterRendered: function(id) {
+-        return this._tiles[id].loaded && !this._coveredTiles[id];
++    "line-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
++      "default": "map",
++      "requires": [
++        "line-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    reload: function() {
+-        this._cache.reset();
+-        for (var i in this._tiles) {
+-            this._load(this._tiles[i]);
++    "line-width": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Stroke thickness.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    /**
+-     * Get a specific tile by id
+-     * @param {string|number} id tile id
+-     * @returns {Object} tile
+-     * @private
+-     */
+-    getTile: function(id) {
+-        return this._tiles[id];
++    "line-gap-width": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "doc": "Draws a line casing outside of a line's actual path. Value indicates the width of the inner gap.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    /**
+-     * get the zoom level adjusted for the difference in map and source tilesizes
+-     * @param {Object} transform
+-     * @returns {number} zoom level
+-     * @private
+-     */
+-    getZoom: function(transform) {
+-        return transform.zoom + Math.log(transform.tileSize / this.tileSize) / Math.LN2;
++    "line-offset": {
++      "type": "number",
++      "default": 0,
++      "doc": "The line's offset. For linear features, a positive value offsets the line to the right, relative to the direction of the line, and a negative value to the left. For polygon features, a positive value results in an inset, and a negative value results in an outset.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "sdk-support": {
++        "basic": {
++          "js": "0.12.1",
++          "ios": "3.1.0",
++          "android": "3.0.0"
++        }
++      }
+     },
+-
+-    /**
+-     * Return a zoom level that will cover all tiles in a given transform
+-     * @param {Object} transform
+-     * @returns {number} zoom level
+-     * @private
+-     */
+-    coveringZoomLevel: function(transform) {
+-        return (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
++    "line-blur": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Blur applied to the line, in pixels.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    /**
+-     * Given a transform, return all coordinates that could cover that
+-     * transform for a covering zoom level.
+-     * @param {Object} transform
+-     * @returns {Array<Tile>} tiles
+-     * @private
+-     */
+-    coveringTiles: function(transform) {
+-        var z = this.coveringZoomLevel(transform);
+-        var actualZ = z;
+-
+-        if (z < this.minzoom) return [];
+-        if (z > this.maxzoom) z = this.maxzoom;
+-
+-        var tr = transform,
+-            tileCenter = tr.locationCoordinate(tr.center)._zoomTo(z),
+-            centerPoint = new Point(tileCenter.column - 0.5, tileCenter.row - 0.5);
+-
+-        return TileCoord.cover(z, [
+-            tr.pointCoordinate(new Point(0, 0))._zoomTo(z),
+-            tr.pointCoordinate(new Point(tr.width, 0))._zoomTo(z),
+-            tr.pointCoordinate(new Point(tr.width, tr.height))._zoomTo(z),
+-            tr.pointCoordinate(new Point(0, tr.height))._zoomTo(z)
+-        ], this.reparseOverscaled ? actualZ : z).sort(function(a, b) {
+-            return centerPoint.dist(a) - centerPoint.dist(b);
+-        });
++    "line-dasharray": {
++      "type": "array",
++      "value": "number",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "doc": "Specifies the lengths of the alternating dashes and gaps that form the dash pattern. The lengths are later scaled by the line width. To convert a dash length to pixels, multiply the length by the current line width.",
++      "minimum": 0,
++      "transition": true,
++      "units": "line widths",
++      "requires": [
++        {
++          "!": "line-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    /**
+-     * Recursively find children of the given tile (up to maxCoveringZoom) that are already loaded;
+-     * adds found tiles to retain object; returns true if any child is found.
+-     *
+-     * @param {Coordinate} coord
+-     * @param {number} maxCoveringZoom
+-     * @param {boolean} retain
+-     * @returns {boolean} whether the operation was complete
+-     * @private
+-     */
+-    findLoadedChildren: function(coord, maxCoveringZoom, retain) {
+-        var found = false;
+-
+-        for (var id in this._tiles) {
+-            var tile = this._tiles[id];
+-
+-            // only consider loaded tiles on higher zoom levels (up to maxCoveringZoom)
+-            if (retain[id] || !tile.loaded || tile.coord.z <= coord.z || tile.coord.z > maxCoveringZoom) continue;
+-
+-            // disregard tiles that are not descendants of the given tile coordinate
+-            var z2 = Math.pow(2, Math.min(tile.coord.z, this.maxzoom) - Math.min(coord.z, this.maxzoom));
+-            if (Math.floor(tile.coord.x / z2) !== coord.x ||
+-                Math.floor(tile.coord.y / z2) !== coord.y)
+-                continue;
+-
+-            // found loaded child
+-            retain[id] = true;
+-            found = true;
+-
+-            // loop through parents; retain the topmost loaded one if found
+-            while (tile && tile.coord.z - 1 > coord.z) {
+-                var parentId = tile.coord.parent(this.maxzoom).id;
+-                tile = this._tiles[parentId];
+-
+-                if (tile && tile.loaded) {
+-                    delete retain[id];
+-                    retain[parentId] = true;
+-                }
+-            }
++    "line-pattern": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "Name of image in sprite to use for drawing image lines. For seamless patterns, image width must be a factor of two (2, 4, 8, ..., 512).",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-        return found;
++      }
++    }
++  },
++  "paint_circle": {
++    "circle-radius": {
++      "type": "number",
++      "default": 5,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Circle radius.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.18.0"
++        }
++      }
+     },
+-
+-    /**
+-     * Find a loaded parent of the given tile (up to minCoveringZoom);
+-     * adds the found tile to retain object and returns the tile if found
+-     *
+-     * @param {Coordinate} coord
+-     * @param {number} minCoveringZoom
+-     * @param {boolean} retain
+-     * @returns {Tile} tile object
+-     * @private
+-     */
+-    findLoadedParent: function(coord, minCoveringZoom, retain) {
+-        for (var z = coord.z - 1; z >= minCoveringZoom; z--) {
+-            coord = coord.parent(this.maxzoom);
+-            var tile = this._tiles[coord.id];
+-            if (tile && tile.loaded) {
+-                retain[coord.id] = true;
+-                return tile;
+-            }
+-            if (this._cache.has(coord.id)) {
+-                this.addTile(coord);
+-                retain[coord.id] = true;
+-                return this._tiles[coord.id];
+-            }
++    "circle-color": {
++      "type": "color",
++      "default": "#000000",
++      "doc": "The color of the circle.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.18.0"
+         }
++      }
+     },
+-
+-    /**
+-     * Resizes the tile cache based on the current viewport's size.
+-     *
+-     * Larger viewports use more tiles and need larger caches. Larger viewports
+-     * are more likely to be found on devices with more memory and on pages where
+-     * the map is more important.
+-     *
+-     * @private
+-     */
+-    updateCacheSize: function(transform) {
+-        var widthInTiles = Math.ceil(transform.width / transform.tileSize) + 1;
+-        var heightInTiles = Math.ceil(transform.height / transform.tileSize) + 1;
+-        var approxTilesInView = widthInTiles * heightInTiles;
+-        var commonZoomRange = 5;
+-        this._cache.setMaxSize(Math.floor(approxTilesInView * commonZoomRange));
++    "circle-blur": {
++      "type": "number",
++      "default": 0,
++      "doc": "Amount to blur the circle. 1 blurs the circle such that only the centerpoint is full opacity.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.20.0"
++        }
++      }
++    },
++    "circle-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the circle will be drawn.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        },
++        "property-function": {
++          "js": "0.20.0"
++        }
++      }
++    },
++    "circle-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [0, 0],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    },
++    "circle-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
++      "default": "map",
++      "requires": [
++        "circle-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    /**
+-     * Removes tiles that are outside the viewport and adds new tiles that
+-     * are inside the viewport.
+-     * @private
+-     */
+-    update: function(used, transform, fadeDuration) {
+-        var i;
+-        var coord;
+-        var tile;
+-
+-        this.updateCacheSize(transform);
+-
+-        // Determine the overzooming/underzooming amounts.
+-        var zoom = (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
+-        var minCoveringZoom = Math.max(zoom - TilePyramid.maxOverzooming, this.minzoom);
+-        var maxCoveringZoom = Math.max(zoom + TilePyramid.maxUnderzooming,  this.minzoom);
+-
+-        // Retain is a list of tiles that we shouldn't delete, even if they are not
+-        // the most ideal tile for the current viewport. This may include tiles like
+-        // parent or child tiles that are *already* loaded.
+-        var retain = {};
+-        var now = new Date().getTime();
+-
+-        // Covered is a list of retained tiles who's areas are full covered by other,
+-        // better, retained tiles. They are not drawn separately.
+-        this._coveredTiles = {};
+-
+-        var required = used ? this.coveringTiles(transform) : [];
+-        for (i = 0; i < required.length; i++) {
+-            coord = required[i];
+-            tile = this.addTile(coord);
+-
+-            retain[coord.id] = true;
+-
+-            if (tile.loaded)
+-                continue;
+-
+-            // The tile we require is not yet loaded.
+-            // Retain child or parent tiles that cover the same area.
+-            if (!this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
+-                this.findLoadedParent(coord, minCoveringZoom, retain);
+-            }
++    "circle-pitch-scale": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "default": "map",
++      "doc": "Controls the scaling behavior of the circle when the map is pitched. The value `map` scales circles according to their apparent distance to the camera. The value `viewport` results in no pitch-related scaling.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.21.0"
+         }
+-
+-        var parentsForFading = {};
+-
+-        var ids = Object.keys(retain);
+-        for (var k = 0; k < ids.length; k++) {
+-            var id = ids[k];
+-            coord = TileCoord.fromID(id);
+-            tile = this._tiles[id];
+-            if (tile && tile.timeAdded > now - (fadeDuration || 0)) {
+-                // This tile is still fading in. Find tiles to cross-fade with it.
+-                if (this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
+-                    retain[id] = true;
+-                }
+-                this.findLoadedParent(coord, minCoveringZoom, parentsForFading);
+-            }
++      }
++    }
++  },
++  "paint_symbol": {
++    "icon-opacity": {
++      "doc": "The opacity at which the icon will be drawn.",
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        var fadedParent;
+-        for (fadedParent in parentsForFading) {
+-            if (!retain[fadedParent]) {
+-                // If a tile is only needed for fading, mark it as covered so that it isn't rendered on it's own.
+-                this._coveredTiles[fadedParent] = true;
+-            }
++      }
++    },
++    "icon-color": {
++      "type": "color",
++      "default": "#000000",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "The color of the icon. This can only be used with sdf icons.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-        for (fadedParent in parentsForFading) {
+-            retain[fadedParent] = true;
++      }
++    },
++    "icon-halo-color": {
++      "type": "color",
++      "default": "rgba(0, 0, 0, 0)",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "The color of the icon's halo. Icon halos can only be used with sdf icons.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        // Remove the tiles we don't need anymore.
+-        var remove = util.keysDifference(this._tiles, retain);
+-        for (i = 0; i < remove.length; i++) {
+-            this.removeTile(+remove[i]);
++      }
++    },
++    "icon-halo-width": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance of halo to the icon outline.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        this.transform = transform;
++      }
+     },
+-
+-    /**
+-     * Add a tile, given its coordinate, to the pyramid.
+-     * @param {Coordinate} coord
+-     * @returns {Coordinate} the coordinate.
+-     * @private
+-     */
+-    addTile: function(coord) {
+-        var tile = this._tiles[coord.id];
+-        if (tile)
+-            return tile;
+-
+-        var wrapped = coord.wrapped();
+-        tile = this._tiles[wrapped.id];
+-
+-        if (!tile) {
+-            tile = this._cache.get(wrapped.id);
+-            if (tile && this._redoPlacement) {
+-                this._redoPlacement(tile);
+-            }
++    "icon-halo-blur": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Fade out the halo towards the outside.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        if (!tile) {
+-            var zoom = coord.z;
+-            var overscaling = zoom > this.maxzoom ? Math.pow(2, zoom - this.maxzoom) : 1;
+-            tile = new Tile(wrapped, this.tileSize * overscaling, this.maxzoom);
+-            this._load(tile);
++      }
++    },
++    "icon-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
++      "requires": [
++        "icon-image"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        tile.uses++;
+-        this._tiles[coord.id] = tile;
+-        this._add(tile, coord);
+-
+-        return tile;
++      }
+     },
+-
+-    /**
+-     * Remove a tile, given its id, from the pyramid
+-     * @param {string|number} id tile id
+-     * @returns {undefined} nothing
+-     * @private
+-     */
+-    removeTile: function(id) {
+-        var tile = this._tiles[id];
+-        if (!tile)
+-            return;
+-
+-        tile.uses--;
+-        delete this._tiles[id];
+-        this._remove(tile);
+-
+-        if (tile.uses > 0)
+-            return;
+-
+-        if (tile.loaded) {
+-            this._cache.add(tile.coord.wrapped().id, tile);
+-        } else {
+-            this._abort(tile);
+-            this._unload(tile);
++    "icon-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
++      "default": "map",
++      "requires": [
++        "icon-image",
++        "icon-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    /**
+-     * Remove all tiles from this pyramid
+-     * @private
+-     */
+-    clearTiles: function() {
+-        for (var id in this._tiles)
+-            this.removeTile(id);
+-        this._cache.reset();
++    "text-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the text will be drawn.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    /**
+-     * Search through our current tiles and attempt to find the tiles that
+-     * cover the given bounds.
+-     * @param {Array<Coordinate>} queryGeometry coordinates of the corners of bounding rectangle
+-     * @returns {Array<Object>} result items have {tile, minX, maxX, minY, maxY}, where min/max bounding values are the given bounds transformed in into the coordinate space of this tile.
+-     * @private
+-     */
+-    tilesIn: function(queryGeometry) {
+-        var tileResults = {};
+-        var ids = this.orderedIDs();
+-
+-        var minX = Infinity;
+-        var minY = Infinity;
+-        var maxX = -Infinity;
+-        var maxY = -Infinity;
+-        var z = queryGeometry[0].zoom;
+-
+-        for (var k = 0; k < queryGeometry.length; k++) {
+-            var p = queryGeometry[k];
+-            minX = Math.min(minX, p.column);
+-            minY = Math.min(minY, p.row);
+-            maxX = Math.max(maxX, p.column);
+-            maxY = Math.max(maxY, p.row);
++    "text-color": {
++      "type": "color",
++      "doc": "The color with which the text will be drawn.",
++      "default": "#000000",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        for (var i = 0; i < ids.length; i++) {
+-            var tile = this._tiles[ids[i]];
+-            var coord = TileCoord.fromID(ids[i]);
+-
+-            var tileSpaceBounds = [
+-                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(minX, minY, z)),
+-                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(maxX, maxY, z))
+-            ];
+-
+-            if (tileSpaceBounds[0].x < EXTENT && tileSpaceBounds[0].y < EXTENT &&
+-                tileSpaceBounds[1].x >= 0 && tileSpaceBounds[1].y >= 0) {
+-
+-                var tileSpaceQueryGeometry = [];
+-                for (var j = 0; j < queryGeometry.length; j++) {
+-                    tileSpaceQueryGeometry.push(coordinateToTilePoint(coord, tile.sourceMaxZoom, queryGeometry[j]));
+-                }
+-
+-                var tileResult = tileResults[tile.coord.id];
+-                if (tileResult === undefined) {
+-                    tileResult = tileResults[tile.coord.id] = {
+-                        tile: tile,
+-                        queryGeometry: [],
+-                        scale: Math.pow(2, this.transform.zoom - tile.coord.z)
+-                    };
+-                }
+-
+-                // Wrapped tiles share one tileResult object but can have multiple queryGeometry parts
+-                tileResult.queryGeometry.push(tileSpaceQueryGeometry);
+-            }
++      }
++    },
++    "text-halo-color": {
++      "type": "color",
++      "default": "rgba(0, 0, 0, 0)",
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "doc": "The color of the text's halo, which helps it stand out from backgrounds.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        var results = [];
+-        for (var t in tileResults) {
+-            results.push(tileResults[t]);
++      }
++    },
++    "text-halo-width": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance of halo to the font outline. Max text halo width is 1/4 of the font-size.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-        return results;
+-    }
+-};
+-
+-/**
+- * Convert a coordinate to a point in a tile's coordinate space.
+- * @param {Coordinate} tileCoord
+- * @param {Coordinate} coord
+- * @returns {Object} position
+- * @private
+- */
+-function coordinateToTilePoint(tileCoord, sourceMaxZoom, coord) {
+-    var zoomedCoord = coord.zoomTo(Math.min(tileCoord.z, sourceMaxZoom));
+-    return {
+-        x: (zoomedCoord.column - (tileCoord.x + tileCoord.w * Math.pow(2, tileCoord.z))) * EXTENT,
+-        y: (zoomedCoord.row - tileCoord.y) * EXTENT
+-    };
+-
+-}
+-
+-function compareKeyZoom(a, b) {
+-    return (a % 32) - (b % 32);
+-}
+-
+-},{"../data/bucket":247,"../geo/coordinate":255,"../util/lru_cache":345,"../util/util":349,"./tile":280,"./tile_coord":281,"point-geometry":404}],283:[function(require,module,exports){
+-'use strict';
+-
+-var util = require('../util/util');
+-var Evented = require('../util/evented');
+-var Source = require('./source');
+-var normalizeURL = require('../util/mapbox').normalizeTileURL;
+-
+-module.exports = VectorTileSource;
+-
+-function VectorTileSource(options) {
+-    util.extend(this, util.pick(options, ['url', 'tileSize']));
+-    this._options = util.extend({ type: 'vector' }, options);
+-
+-    if (this.tileSize !== 512) {
+-        throw new Error('vector tile sources must have a tileSize of 512');
+-    }
+-
+-    Source._loadTileJSON.call(this, options);
+-}
+-
+-VectorTileSource.prototype = util.inherit(Evented, {
+-    minzoom: 0,
+-    maxzoom: 22,
+-    tileSize: 512,
+-    reparseOverscaled: true,
+-    _loaded: false,
+-    isTileClipped: true,
+-
+-    onAdd: function(map) {
+-        this.map = map;
++      }
+     },
+-
+-    loaded: function() {
+-        return this._pyramid && this._pyramid.loaded();
++    "text-halo-blur": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "The halo's fadeout distance towards the outside.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    update: function(transform) {
+-        if (this._pyramid) {
+-            this._pyramid.update(this.used, transform);
++    "text-translate": {
++      "type": "array",
++      "value": "number",
++      "length": 2,
++      "default": [
++        0,
++        0
++      ],
++      "function": "interpolated",
++      "zoom-function": true,
++      "property-function": true,
++      "transition": true,
++      "units": "pixels",
++      "doc": "Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
++      "requires": [
++        "text-field"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    reload: function() {
+-        if (this._pyramid) {
+-            this._pyramid.reload();
++    "text-translate-anchor": {
++      "type": "enum",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "property-function": true,
++      "values": [
++        "map",
++        "viewport"
++      ],
++      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
++      "default": "map",
++      "requires": [
++        "text-field",
++        "text-translate"
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "paint_raster": {
++    "raster-opacity": {
++      "type": "number",
++      "doc": "The opacity at which the image will be drawn.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    serialize: function() {
+-        return util.extend({}, this._options);
++    "raster-hue-rotate": {
++      "type": "number",
++      "default": 0,
++      "period": 360,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "units": "degrees",
++      "doc": "Rotates hues around the color wheel.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    getVisibleCoordinates: Source._getVisibleCoordinates,
+-    getTile: Source._getTile,
+-
+-    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
+-    querySourceFeatures: Source._querySourceFeatures,
+-
+-    _loadTile: function(tile) {
+-        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
+-        var params = {
+-            url: normalizeURL(tile.coord.url(this.tiles, this.maxzoom), this.url),
+-            uid: tile.uid,
+-            coord: tile.coord,
+-            zoom: tile.coord.z,
+-            tileSize: this.tileSize * overscaling,
+-            source: this.id,
+-            overscaling: overscaling,
+-            angle: this.map.transform.angle,
+-            pitch: this.map.transform.pitch,
+-            showCollisionBoxes: this.map.showCollisionBoxes
+-        };
+-
+-        if (tile.workerID) {
+-            params.rawTileData = tile.rawTileData;
+-            this.dispatcher.send('reload tile', params, this._tileLoaded.bind(this, tile), tile.workerID);
+-        } else {
+-            tile.workerID = this.dispatcher.send('load tile', params, this._tileLoaded.bind(this, tile));
++    "raster-brightness-min": {
++      "type": "number",
++      "function": "interpolated",
++      "zoom-function": true,
++      "doc": "Increase or reduce the brightness of the image. The value is the minimum brightness.",
++      "default": 0,
++      "minimum": 0,
++      "maximum": 1,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
++      }
+     },
+-
+-    _tileLoaded: function(tile, err, data) {
+-        if (tile.aborted)
+-            return;
+-
+-        if (err) {
+-            tile.errored = true;
+-            this.fire('tile.error', {tile: tile, error: err});
+-            return;
++    "raster-brightness-max": {
++      "type": "number",
++      "function": "interpolated",
++      "zoom-function": true,
++      "doc": "Increase or reduce the brightness of the image. The value is the maximum brightness.",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        tile.loadVectorData(data, this.map.style);
+-
+-        if (tile.redoWhenDone) {
+-            tile.redoWhenDone = false;
+-            tile.redoPlacement(this);
++      }
++    },
++    "raster-saturation": {
++      "type": "number",
++      "doc": "Increase or reduce the saturation of the image.",
++      "default": 0,
++      "minimum": -1,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
+         }
+-
+-        this.fire('tile.load', {tile: tile});
+-        this.fire('tile.stats', data.bucketStats);
++      }
+     },
+-
+-    _abortTile: function(tile) {
+-        tile.aborted = true;
+-        this.dispatcher.send('abort tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    "raster-contrast": {
++      "type": "number",
++      "doc": "Increase or reduce the contrast of the image.",
++      "default": 0,
++      "minimum": -1,
++      "maximum": 1,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _addTile: function(tile) {
+-        this.fire('tile.add', {tile: tile});
++    "raster-fade-duration": {
++      "type": "number",
++      "default": 300,
++      "minimum": 0,
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "units": "milliseconds",
++      "doc": "Fade duration when a new tile is added.",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "paint_background": {
++    "background-color": {
++      "type": "color",
++      "default": "#000000",
++      "doc": "The color with which the background will be drawn.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "requires": [
++        {
++          "!": "background-pattern"
++        }
++      ],
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _removeTile: function(tile) {
+-        this.fire('tile.remove', {tile: tile});
++    "background-pattern": {
++      "type": "string",
++      "function": "piecewise-constant",
++      "zoom-function": true,
++      "transition": true,
++      "doc": "Name of image in sprite to use for drawing an image background. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).",
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
+     },
+-
+-    _unloadTile: function(tile) {
+-        tile.unloadVectorData(this.map.painter);
+-        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    "background-opacity": {
++      "type": "number",
++      "default": 1,
++      "minimum": 0,
++      "maximum": 1,
++      "doc": "The opacity at which the background will be drawn.",
++      "function": "interpolated",
++      "zoom-function": true,
++      "transition": true,
++      "sdk-support": {
++        "basic": {
++          "js": "0.10.0",
++          "ios": "2.0.0",
++          "android": "2.0.1"
++        }
++      }
++    }
++  },
++  "transition": {
++    "duration": {
++      "type": "number",
++      "default": 300,
++      "minimum": 0,
++      "units": "milliseconds",
++      "doc": "Time allotted for transitions to complete."
+     },
+-
+-    redoPlacement: Source.redoPlacement,
+-
+-    _redoTilePlacement: function(tile) {
+-        tile.redoPlacement(this);
++    "delay": {
++      "type": "number",
++      "default": 0,
++      "minimum": 0,
++      "units": "milliseconds",
++      "doc": "Length of time before a transition begins."
+     }
+-});
++  }
++}
+ 
+-},{"../util/evented":341,"../util/mapbox":346,"../util/util":349,"./source":279}],284:[function(require,module,exports){
++},{}],259:[function(require,module,exports){
++module.exports={"$version":8,"$root":{"version":{"required":true,"type":"enum","values":[8]},"name":{"type":"string"},"metadata":{"type":"*"},"center":{"type":"array","value":"number"},"zoom":{"type":"number"},"bearing":{"type":"number","default":0,"period":360,"units":"degrees"},"pitch":{"type":"number","default":0,"units":"degrees"},"sources":{"required":true,"type":"sources"},"sprite":{"type":"string"},"glyphs":{"type":"string"},"transition":{"type":"transition"},"layers":{"required":true,"type":"array","value":"layer"}},"sources":{"*":{"type":"source"}},"source":["source_tile","source_geojson","source_video","source_image"],"source_tile":{"type":{"required":true,"type":"enum","values":["vector","raster"]},"url":{"type":"string"},"tiles":{"type":"array","value":"string"},"minzoom":{"type":"number","default":0},"maxzoom":{"type":"number","default":22},"tileSize":{"type":"number","default":512,"units":"pixels"},"*":{"type":"*"}},"source_geojson":{"type":{"required":true,"type":"enum","values":["geojson"]},"data":{"type":"*"},"maxzoom":{"type":"number","default":14},"buffer":{"type":"number","default":64},"tolerance":{"type":"number","default":3},"cluster":{"type":"boolean","default":false},"clusterRadius":{"type":"number","default":400},"clusterMaxZoom":{"type":"number"}},"source_video":{"type":{"required":true,"type":"enum","values":["video"]},"urls":{"required":true,"type":"array","value":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"source_image":{"type":{"required":true,"type":"enum","values":["image"]},"url":{"required":true,"type":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"layer":{"id":{"type":"string","required":true},"type":{"type":"enum","values":["fill","line","symbol","circle","raster","background"]},"metadata":{"type":"*"},"ref":{"type":"string"},"source":{"type":"string"},"source-layer":{"type":"string"},"minzoom":{"type":"number","minimum":0,"maximum":22},"maxzoom":{"type":"number","minimum":0,"maximum":22},"interactive":{"type":"boolean","default":false},"filter":{"type":"filter"},"layout":{"type":"layout"},"paint":{"type":"paint"},"paint.*":{"type":"paint"}},"layout":["layout_fill","layout_line","layout_circle","layout_symbol","layout_raster","layout_background"],"layout_background":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_fill":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_circle":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_line":{"line-cap":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["butt","round","square"],"default":"butt"},"line-join":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["bevel","round","miter"],"default":"miter"},"line-miter-limit":{"type":"number","default":2,"function":"interpolated","zoom-function":true,"property-function":true,"requires":[{"line-join":"miter"}]},"line-round-limit":{"type":"number","default":1.05,"function":"interpolated","zoom-function":true,"property-function":true,"requires":[{"line-join":"round"}]},"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_symbol":{"symbol-placement":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["point","line"],"default":"point"},"symbol-spacing":{"type":"number","default":250,"minimum":1,"function":"interpolated","zoom-function":true,"property-function":true,"units":"pixels","requires":[{"symbol-placement":"line"}]},"symbol-avoid-edges":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false},"icon-allow-overlap":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image"]},"icon-ignore-placement":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image"]},"icon-optional":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image","text-field"]},"icon-rotation-alignment":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"viewport","requires":["icon-image"]},"icon-size":{"type":"number","default":1,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"requires":["icon-image"]},"icon-text-fit":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":false,"values":["none","both","width","height"],"default":"none","requires":["icon-image","text-field"]},"icon-text-fit-padding":{"type":"array","value":"number","length":4,"default":[0,0,0,0],"units":"pixels","function":"interpolated","zoom-function":true,"property-function":true,"requires":["icon-image","icon-text-fit","text-field"]},"icon-image":{"type":"string","function":"piecewise-constant","zoom-function":true,"property-function":true,"tokens":true},"icon-rotate":{"type":"number","default":0,"period":360,"function":"interpolated","zoom-function":true,"property-function":true,"units":"degrees","requires":["icon-image"]},"icon-padding":{"type":"number","default":2,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"units":"pixels","requires":["icon-image"]},"icon-keep-upright":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image",{"icon-rotation-alignment":"map"},{"symbol-placement":"line"}]},"icon-offset":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","zoom-function":true,"property-function":true,"requires":["icon-image"]},"text-pitch-alignment":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"requires":["text-field"]},"text-rotation-alignment":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"viewport","requires":["text-field"]},"text-field":{"type":"string","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":"","tokens":true},"text-font":{"type":"array","value":"string","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":["Open Sans Regular","Arial Unicode MS 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true}},"paint_line":{"line-opacity":{"type":"number","function":"interpolated","zoom-function":true,"property-function":true,"default":1,"minimum":0,"maximum":1,"transition":true},"line-color":{"type":"color","default":"#000000","function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"requires":[{"!":"line-pattern"}]},"line-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"line-translate-anchor":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"map","requires":["line-translate"]},"line-width":{"type":"number","default":1,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"line-gap-width":{"type":"number","default":0,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"line-offset":{"type":"number","default":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"line-blur":{"type":"number","default":0,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"line-dasharray":{"type":"array","value":"number","function":"piecewise-constant","zoom-function":true,"property-function":true,"minimum":0,"transition":true,"units":"line 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++},{}],260:[function(require,module,exports){
+ 'use strict';
+ 
++var featureFilter = require('feature-filter');
++var Buffer = require('./buffer');
+ var util = require('../util/util');
+-var Tile = require('./tile');
+-var TileCoord = require('./tile_coord');
+-var LngLat = require('../geo/lng_lat');
+-var Point = require('point-geometry');
+-var Evented = require('../util/evented');
+-var ajax = require('../util/ajax');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
+-var Buffer = require('../data/buffer');
++var StructArrayType = require('../util/struct_array');
+ var VertexArrayObject = require('../render/vertex_array_object');
+ 
+-module.exports = VideoSource;
++module.exports = Bucket;
+ 
+ /**
+- * Create a Video data source instance given an options object
+- * @class VideoSource
+- * @param {Object} [options]
+- * @param {Array<string>} options.urls An array of URLs to video files
+- * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
+- * @example
+- * var sourceObj = new mapboxgl.VideoSource({
+- *    url: [
+- *        'https://www.mapbox.com/videos/baltimore-smoke.mp4',
+- *        'https://www.mapbox.com/videos/baltimore-smoke.webm'
+- *    ],
+- *    coordinates: [
+- *        [-76.54335737228394, 39.18579907229748],
+- *        [-76.52803659439087, 39.1838364847587],
+- *        [-76.5295386314392, 39.17683392507606],
+- *        [-76.54520273208618, 39.17876344106642]
+- *    ]
+- * });
+- * map.addSource('some id', sourceObj); // add
+- * map.removeSource('some id');  // remove
++ * Instantiate the appropriate subclass of `Bucket` for `options`.
++ * @private
++ * @param options See `Bucket` constructor options
++ * @returns {Bucket}
+  */
+-function VideoSource(options) {
+-    this.urls = options.urls;
+-    this.coordinates = options.coordinates;
+-
+-    ajax.getVideo(options.urls, function(err, video) {
+-        // @TODO handle errors via event.
+-        if (err) return;
+-
+-        this.video = video;
+-        this.video.loop = true;
+-
+-        var loopID;
+-
+-        // start repainting when video starts playing
+-        this.video.addEventListener('playing', function() {
+-            loopID = this.map.style.animationLoop.set(Infinity);
+-            this.map._rerender();
+-        }.bind(this));
+-
+-        // stop repainting when video stops
+-        this.video.addEventListener('pause', function() {
+-            this.map.style.animationLoop.cancel(loopID);
+-        }.bind(this));
+-
+-        this._loaded = true;
+-
+-        if (this.map) {
+-            this.video.play();
+-            this.setCoordinates(options.coordinates);
+-        }
+-    }.bind(this));
+-}
++Bucket.create = function(options) {
++    var Classes = {
++        fill: require('./bucket/fill_bucket'),
++        line: require('./bucket/line_bucket'),
++        circle: require('./bucket/circle_bucket'),
++        symbol: require('./bucket/symbol_bucket')
++    };
++    return new Classes[options.layer.type](options);
++};
+ 
+-VideoSource.prototype = util.inherit(Evented, /** @lends VideoSource.prototype */{
+-    roundZoom: true,
+ 
+-    /**
+-     * Return the HTML video element.
+-     *
+-     * @returns {Object}
+-     */
+-    getVideo: function() {
+-        return this.video;
+-    },
++/**
++ * The maximum extent of a feature that can be safely stored in the buffer.
++ * In practice, all features are converted to this extent before being added.
++ *
++ * Positions are stored as signed 16bit integers.
++ * One bit is lost for signedness to support featuers extending past the left edge of the tile.
++ * One bit is lost because the line vertex buffer packs 1 bit of other data into the int.
++ * One bit is lost to support features extending past the extent on the right edge of the tile.
++ * This leaves us with 2^13 = 8192
++ *
++ * @private
++ * @readonly
++ */
++Bucket.EXTENT = 8192;
+ 
+-    onAdd: function(map) {
+-        this.map = map;
+-        if (this.video) {
+-            this.video.play();
+-            this.setCoordinates(this.coordinates);
+-        }
+-    },
++/**
++ * The `Bucket` class is the single point of knowledge about turning vector
++ * tiles into WebGL buffers.
++ *
++ * `Bucket` is an abstract class. A subclass exists for each Mapbox GL
++ * style spec layer type. Because `Bucket` is an abstract class,
++ * instances should be created via the `Bucket.create` method.
++ *
++ * @class Bucket
++ * @private
++ * @param options
++ * @param {number} options.zoom Zoom level of the buffers being built. May be
++ *     a fractional zoom level.
++ * @param options.layer A Mapbox GL style layer object
++ * @param {Object.<string, Buffer>} options.buffers The set of `Buffer`s being
++ *     built for this tile. This object facilitates sharing of `Buffer`s be
++       between `Bucket`s.
++ */
++function Bucket(options) {
++    this.zoom = options.zoom;
++    this.overscaling = options.overscaling;
++    this.layer = options.layer;
++    this.childLayers = options.childLayers;
+ 
+-    /**
+-     * Update video coordinates and rerender map
+-     *
+-     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
+-     * @returns {VideoSource} this
+-     */
+-    setCoordinates: function(coordinates) {
+-        this.coordinates = coordinates;
++    this.type = this.layer.type;
++    this.features = [];
++    this.id = this.layer.id;
++    this.index = options.index;
++    this.sourceLayer = this.layer.sourceLayer;
++    this.sourceLayerIndex = options.sourceLayerIndex;
++    this.minZoom = this.layer.minzoom;
++    this.maxZoom = this.layer.maxzoom;
+ 
+-        // Calculate which mercator tile is suitable for rendering the video in
+-        // and create a buffer with the corner coordinates. These coordinates
+-        // may be outside the tile, because raster tiles aren't clipped when rendering.
++    this.paintAttributes = createPaintAttributes(this);
+ 
+-        var map = this.map;
+-        var cornerZ0Coords = coordinates.map(function(coord) {
+-            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
+-        });
++    if (options.arrays) {
++        var childLayers = this.childLayers;
++        this.bufferGroups = util.mapObject(options.arrays, function(programArrayGroups, programName) {
++            return programArrayGroups.map(function(programArrayGroup) {
+ 
+-        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
+-        centerCoord.column = Math.round(centerCoord.column);
+-        centerCoord.row = Math.round(centerCoord.row);
++                var group = util.mapObject(programArrayGroup, function(arrays, layoutOrPaint) {
++                    return util.mapObject(arrays, function(array, name) {
++                        var arrayType = options.arrayTypes[programName][layoutOrPaint][name];
++                        var type = (arrayType.members.length && arrayType.members[0].name === 'vertices' ? Buffer.BufferType.ELEMENT : Buffer.BufferType.VERTEX);
++                        return new Buffer(array, arrayType, type);
++                    });
++                });
+ 
++                group.vaos = {};
++                if (group.layout.element2) group.secondVaos = {};
++                for (var l = 0; l < childLayers.length; l++) {
++                    var layerName = childLayers[l].id;
++                    group.vaos[layerName] = new VertexArrayObject();
++                    if (group.layout.element2) group.secondVaos[layerName] = new VertexArrayObject();
++                }
+ 
+-        var tileCoords = cornerZ0Coords.map(function(coord) {
+-            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
+-            return new Point(
+-                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
+-                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
++                return group;
++            });
+         });
++    }
++}
+ 
+-        var maxInt16 = 32767;
+-        var array = new RasterBoundsArray();
+-        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
+-        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
+-        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
+-        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
+-
+-        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
+-        this.tile.buckets = {};
++/**
++ * Build the buffers! Features are set directly to the `features` property.
++ * @private
++ */
++Bucket.prototype.populateBuffers = function() {
++    this.createArrays();
++    this.recalculateStyleLayers();
+ 
+-        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
+-        this.tile.boundsVAO = new VertexArrayObject();
++    for (var i = 0; i < this.features.length; i++) {
++        this.addFeature(this.features[i]);
++    }
+ 
+-        this.fire('change');
++    this.trimArrays();
++};
+ 
+-        return this;
+-    },
++/**
++ * Check if there is enough space available in the current element group for
++ * `vertexLength` vertices. If not, append a new elementGroup. Should be called
++ * by `populateBuffers` and its callees.
++ * @private
++ * @param {string} programName the name of the program associated with the buffer that will receive the vertices
++ * @param {number} vertexLength The number of vertices that will be inserted to the buffer.
++ */
++Bucket.prototype.makeRoomFor = function(programName, numVertices) {
++    var groups = this.arrayGroups[programName];
++    var currentGroup = groups.length && groups[groups.length - 1];
+ 
+-    loaded: function() {
+-        return this.video && this.video.readyState >= 2;
+-    },
++    if (!currentGroup || currentGroup.layout.vertex.length + numVertices > 65535) {
+ 
+-    update: function() {
+-        // noop
+-    },
++        var arrayTypes = this.arrayTypes[programName];
++        var VertexArrayType = arrayTypes.layout.vertex;
++        var ElementArrayType = arrayTypes.layout.element;
++        var ElementArrayType2 = arrayTypes.layout.element2;
+ 
+-    reload: function() {
+-        // noop
+-    },
++        currentGroup = {
++            index: groups.length,
++            layout: {},
++            paint: {}
++        };
+ 
+-    prepare: function() {
+-        if (!this._loaded) return;
+-        if (this.video.readyState < 2) return; // not enough data for current position
++        currentGroup.layout.vertex = new VertexArrayType();
++        if (ElementArrayType) currentGroup.layout.element = new ElementArrayType();
++        if (ElementArrayType2) currentGroup.layout.element2 = new ElementArrayType2();
+ 
+-        var gl = this.map.painter.gl;
+-        if (!this.tile.texture) {
+-            this.tile.texture = gl.createTexture();
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
+-        } else {
+-            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
+-            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
++        for (var i = 0; i < this.childLayers.length; i++) {
++            var layerName = this.childLayers[i].id;
++            var PaintVertexArrayType = arrayTypes.paint[layerName];
++            currentGroup.paint[layerName] = new PaintVertexArrayType();
+         }
+ 
+-        this._currentTime = this.video.currentTime;
+-    },
+-
+-    getVisibleCoordinates: function() {
+-        if (this.tile) return [this.tile.coord];
+-        else return [];
+-    },
+-
+-    getTile: function() {
+-        return this.tile;
+-    },
+-
+-    serialize: function() {
+-        return {
+-            type: 'video',
+-            urls: this.urls,
+-            coordinates: this.coordinates
+-        };
++        groups.push(currentGroup);
+     }
+-});
+-
+-},{"../data/bucket":247,"../data/buffer":252,"../geo/lng_lat":256,"../render/draw_raster":267,"../render/vertex_array_object":273,"../util/ajax":334,"../util/evented":341,"../util/util":349,"./tile":280,"./tile_coord":281,"point-geometry":404}],285:[function(require,module,exports){
+-'use strict';
+-
+-var Actor = require('../util/actor');
+-var WorkerTile = require('./worker_tile');
+-var StyleLayer = require('../style/style_layer');
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var vt = require('vector-tile');
+-var Protobuf = require('pbf');
+-var supercluster = require('supercluster');
+-
+-var geojsonvt = require('geojson-vt');
+-var rewind = require('geojson-rewind');
+-var GeoJSONWrapper = require('./geojson_wrapper');
+-var vtpbf = require('vt-pbf');
+ 
+-module.exports = function(self) {
+-    return new Worker(self);
++    return currentGroup;
+ };
+ 
+-function Worker(self) {
+-    this.self = self;
+-    this.actor = new Actor(self, this);
+-    this.loading = {};
+-
+-    this.loaded = {};
+-    this.geoJSONIndexes = {};
+-}
+-
+-util.extend(Worker.prototype, {
+-    'set layers': function(layers) {
+-        this.layers = {};
+-        var that = this;
+-
+-        // Filter layers and create an id -> layer map
+-        var childLayerIndicies = [];
+-        for (var i = 0; i < layers.length; i++) {
+-            var layer = layers[i];
+-            if (layer.type === 'fill' || layer.type === 'line' || layer.type === 'circle' || layer.type === 'symbol') {
+-                if (layer.ref) {
+-                    childLayerIndicies.push(i);
+-                } else {
+-                    setLayer(layer);
+-                }
+-            }
+-        }
+-
+-        // Create an instance of StyleLayer per layer
+-        for (var j = 0; j < childLayerIndicies.length; j++) {
+-            setLayer(layers[childLayerIndicies[j]]);
+-        }
+-
+-        function setLayer(serializedLayer) {
+-            var styleLayer = StyleLayer.create(
+-                serializedLayer,
+-                serializedLayer.ref && that.layers[serializedLayer.ref]
+-            );
+-            styleLayer.updatePaintTransitions({}, {transition: false});
+-            that.layers[styleLayer.id] = styleLayer;
+-        }
++/**
++ * Start using a new shared `buffers` object and recreate instances of `Buffer`
++ * as necessary.
++ * @private
++ */
++Bucket.prototype.createArrays = function() {
++    this.arrayGroups = {};
++    this.arrayTypes = {};
+ 
+-        this.layerFamilies = createLayerFamilies(this.layers);
+-    },
++    for (var programName in this.programInterfaces) {
++        var programInterface = this.programInterfaces[programName];
++        var programArrayTypes = this.arrayTypes[programName] = { layout: {}, paint: {} };
++        this.arrayGroups[programName] = [];
+ 
+-    'update layers': function(layers) {
+-        var that = this;
+-        var id;
+-        var layer;
++        if (programInterface.vertexBuffer) {
++            var VertexArrayType = new StructArrayType({
++                members: this.programInterfaces[programName].layoutAttributes,
++                alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
++            });
+ 
+-        // Update ref parents
+-        for (id in layers) {
+-            layer = layers[id];
+-            if (layer.ref) updateLayer(layer);
+-        }
++            programArrayTypes.layout.vertex = VertexArrayType;
+ 
+-        // Update ref children
+-        for (id in layers) {
+-            layer = layers[id];
+-            if (!layer.ref) updateLayer(layer);
+-        }
++            var layerPaintAttributes = this.paintAttributes[programName];
++            for (var layerName in layerPaintAttributes) {
++                var PaintVertexArrayType = new StructArrayType({
++                    members: layerPaintAttributes[layerName].attributes,
++                    alignment: Buffer.VERTEX_ATTRIBUTE_ALIGNMENT
++                });
+ 
+-        function updateLayer(layer) {
+-            var refLayer = that.layers[layer.ref];
+-            if (that.layers[layer.id]) {
+-                that.layers[layer.id].set(layer, refLayer);
+-            } else {
+-                that.layers[layer.id] = StyleLayer.create(layer, refLayer);
++                programArrayTypes.paint[layerName] = PaintVertexArrayType;
+             }
+-            that.layers[layer.id].updatePaintTransitions({}, {transition: false});
+         }
+ 
+-        this.layerFamilies = createLayerFamilies(this.layers);
+-    },
+-
+-    'load tile': function(params, callback) {
+-        var source = params.source,
+-            uid = params.uid;
++        if (programInterface.elementBuffer) {
++            var ElementArrayType = createElementBufferType(programInterface.elementBufferComponents);
++            programArrayTypes.layout.element = ElementArrayType;
++        }
+ 
+-        if (!this.loading[source])
+-            this.loading[source] = {};
++        if (programInterface.elementBuffer2) {
++            var ElementArrayType2 = createElementBufferType(programInterface.elementBuffer2Components);
++            programArrayTypes.layout.element2 = ElementArrayType2;
++        }
++    }
++};
+ 
++Bucket.prototype.destroy = function(gl) {
++    for (var programName in this.bufferGroups) {
++        var programBufferGroups = this.bufferGroups[programName];
++        for (var i = 0; i < programBufferGroups.length; i++) {
++            var programBuffers = programBufferGroups[i];
++            for (var paintBuffer in programBuffers.paint) {
++                programBuffers.paint[paintBuffer].destroy(gl);
++            }
++            for (var layoutBuffer in programBuffers.layout) {
++                programBuffers.layout[layoutBuffer].destroy(gl);
++            }
++            for (var j in programBuffers.vaos) {
++                programBuffers.vaos[j].destroy(gl);
++            }
++            for (var k in programBuffers.secondVaos) {
++                programBuffers.secondVaos[k].destroy(gl);
++            }
++        }
++    }
+ 
+-        var tile = this.loading[source][uid] = new WorkerTile(params);
++};
+ 
+-        tile.xhr = ajax.getArrayBuffer(params.url, done.bind(this));
++Bucket.prototype.trimArrays = function() {
++    for (var programName in this.arrayGroups) {
++        var programArrays = this.arrayGroups[programName];
++        for (var paintArray in programArrays.paint) {
++            programArrays.paint[paintArray].trim();
++        }
++        for (var layoutArray in programArrays.layout) {
++            programArrays.layout[layoutArray].trim();
++        }
++    }
++};
+ 
+-        function done(err, data) {
+-            delete this.loading[source][uid];
++Bucket.prototype.setUniforms = function(gl, programName, program, layer, globalProperties) {
++    var uniforms = this.paintAttributes[programName][layer.id].uniforms;
++    for (var i = 0; i < uniforms.length; i++) {
++        var uniform = uniforms[i];
++        var uniformLocation = program[uniform.name];
++        gl['uniform' + uniform.components + 'fv'](uniformLocation, uniform.getValue(layer, globalProperties));
++    }
++};
+ 
+-            if (err) return callback(err);
++Bucket.prototype.serialize = function() {
++    return {
++        layerId: this.layer.id,
++        zoom: this.zoom,
++        arrays: util.mapObject(this.arrayGroups, function(programArrayGroups) {
++            return programArrayGroups.map(function(arrayGroup) {
++                return util.mapObject(arrayGroup, function(arrays) {
++                    return util.mapObject(arrays, function(array) {
++                        return array.serialize();
++                    });
++                });
++            });
++        }),
++        arrayTypes: util.mapObject(this.arrayTypes, function(programArrayTypes) {
++            return util.mapObject(programArrayTypes, function(arrayTypes) {
++                return util.mapObject(arrayTypes, function(arrayType) {
++                    return arrayType.serialize();
++                });
++            });
++        }),
+ 
+-            tile.data = new vt.VectorTile(new Protobuf(new Uint8Array(data)));
+-            tile.parse(tile.data, this.layerFamilies, this.actor, data, callback);
++        childLayerIds: this.childLayers.map(function(layer) {
++            return layer.id;
++        })
++    };
++};
+ 
+-            this.loaded[source] = this.loaded[source] || {};
+-            this.loaded[source][uid] = tile;
+-        }
+-    },
++Bucket.prototype.createFilter = function() {
++    if (!this.filter) {
++        this.filter = featureFilter(this.layer.filter);
++    }
++};
+ 
+-    'reload tile': function(params, callback) {
+-        var loaded = this.loaded[params.source],
+-            uid = params.uid;
+-        if (loaded && loaded[uid]) {
+-            var tile = loaded[uid];
+-            tile.parse(tile.data, this.layerFamilies, this.actor, params.rawTileData, callback);
+-        }
+-    },
++var FAKE_ZOOM_HISTORY = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
++Bucket.prototype.recalculateStyleLayers = function() {
++    for (var i = 0; i < this.childLayers.length; i++) {
++        this.childLayers[i].recalculate(this.zoom, FAKE_ZOOM_HISTORY);
++    }
++};
+ 
+-    'abort tile': function(params) {
+-        var loading = this.loading[params.source],
+-            uid = params.uid;
+-        if (loading && loading[uid]) {
+-            loading[uid].xhr.abort();
+-            delete loading[uid];
+-        }
+-    },
++Bucket.prototype.getProgramMacros = function(programInterface, layer) {
++    var macros = [];
++    var attributes = this.paintAttributes[programInterface][layer.id].attributes;
++    for (var i = 0; i < attributes.length; i++) {
++        var attribute = attributes[i];
++        macros.push('ATTRIBUTE_' + (attribute.isFunction ? 'ZOOM_FUNCTION_' : '') + attribute.name.toUpperCase());
++    }
++    return macros;
++};
+ 
+-    'remove tile': function(params) {
+-        var loaded = this.loaded[params.source],
+-            uid = params.uid;
+-        if (loaded && loaded[uid]) {
+-            delete loaded[uid];
+-        }
+-    },
++Bucket.prototype.addPaintAttributes = function(interfaceName, globalProperties, featureProperties, startGroup, startIndex) {
++    for (var l = 0; l < this.childLayers.length; l++) {
++        var layer = this.childLayers[l];
++        var groups = this.arrayGroups[interfaceName];
++        for (var g = startGroup.index; g < groups.length; g++) {
++            var group = groups[g];
++            var length = group.layout.vertex.length;
++            var vertexArray = group.paint[layer.id];
++            vertexArray.resize(length);
+ 
+-    'redo placement': function(params, callback) {
+-        var loaded = this.loaded[params.source],
+-            loading = this.loading[params.source],
+-            uid = params.uid;
++            var attributes = this.paintAttributes[interfaceName][layer.id].attributes;
++            for (var m = 0; m < attributes.length; m++) {
++                var attribute = attributes[m];
+ 
+-        if (loaded && loaded[uid]) {
+-            var tile = loaded[uid];
+-            var result = tile.redoPlacement(params.angle, params.pitch, params.showCollisionBoxes);
++                var value = attribute.getValue(layer, globalProperties, featureProperties);
++                var multiplier = attribute.multiplier || 1;
++                var components = attribute.components || 1;
+ 
+-            if (result.result) {
+-                callback(null, result.result, result.transferables);
++                for (var i = startIndex; i < length; i++) {
++                    var vertex = vertexArray.get(i);
++                    for (var c = 0; c < components; c++) {
++                        var memberName = components > 1 ? (attribute.name + c) : attribute.name;
++                        vertex[memberName] = value[c] * multiplier;
++                    }
++                }
+             }
+-
+-        } else if (loading && loading[uid]) {
+-            loading[uid].angle = params.angle;
+         }
+-    },
++    }
++};
+ 
+-    'parse geojson': function(params, callback) {
+-        var indexData = function(err, data) {
+-            rewind(data, true);
+-            if (err) return callback(err);
+-            if (typeof data != 'object') {
+-                return callback(new Error("Input data is not a valid GeoJSON object."));
+-            }
+-            try {
+-                this.geoJSONIndexes[params.source] = params.cluster ?
+-                    supercluster(params.superclusterOptions).load(data.features) :
+-                    geojsonvt(data, params.geojsonVtOptions);
+-            } catch (err) {
+-                return callback(err);
+-            }
+-            callback(null);
+-        }.bind(this);
++function createElementBufferType(components) {
++    return new StructArrayType({
++        members: [{
++            type: Buffer.ELEMENT_ATTRIBUTE_TYPE,
++            name: 'vertices',
++            components: components || 3
++        }]
++    });
++}
+ 
+-        // Not, because of same origin issues, urls must either include an
+-        // explicit origin or absolute path.
+-        // ie: /foo/bar.json or http://example.com/bar.json
+-        // but not ../foo/bar.json
+-        if (params.url) {
+-            ajax.getJSON(params.url, indexData);
+-        } else if (typeof params.data === 'string') {
+-            indexData(null, JSON.parse(params.data));
+-        } else {
+-            return callback(new Error("Input data is not a valid GeoJSON object."));
+-        }
+-    },
++function createPaintAttributes(bucket) {
++    var attributes = {};
++    for (var interfaceName in bucket.programInterfaces) {
++        var layerPaintAttributes = attributes[interfaceName] = {};
+ 
+-    'load geojson tile': function(params, callback) {
+-        var source = params.source,
+-            coord = params.coord;
++        for (var c = 0; c < bucket.childLayers.length; c++) {
++            var childLayer = bucket.childLayers[c];
++            layerPaintAttributes[childLayer.id] = { attributes: [], uniforms: [] };
++        }
+ 
+-        if (!this.geoJSONIndexes[source]) return callback(null, null); // we couldn't load the file
++        var interface_ = bucket.programInterfaces[interfaceName];
++        if (!interface_.paintAttributes) continue;
++        for (var i = 0; i < interface_.paintAttributes.length; i++) {
++            var attribute = interface_.paintAttributes[i];
+ 
+-        // console.time('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
++            for (var j = 0; j < bucket.childLayers.length; j++) {
++                var layer = bucket.childLayers[j];
++                var paintAttributes = layerPaintAttributes[layer.id];
+ 
+-        var geoJSONTile = this.geoJSONIndexes[source].getTile(Math.min(coord.z, params.maxZoom), coord.x, coord.y);
++                if (layer.isPaintValueFeatureConstant(attribute.paintProperty)) {
++                    paintAttributes.uniforms.push(attribute);
++                } else if (layer.isPaintValueZoomConstant(attribute.paintProperty)) {
++                    paintAttributes.attributes.push(attribute);
++                } else {
+ 
+-        // console.timeEnd('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
++                    var zoomLevels = layer.getPaintValueStopZoomLevels(attribute.paintProperty);
+ 
+-        // if (!geoJSONTile) console.log('not found', this.geoJSONIndexes[source], coord);
++                    // Pick the index of the first offset to add to the buffers.
++                    // Find the four closest stops, ideally with two on each side of the zoom level.
++                    var numStops = 0;
++                    while (numStops < zoomLevels.length && zoomLevels[numStops] < bucket.zoom) numStops++;
++                    var stopOffset = Math.max(0, Math.min(zoomLevels.length - 4, numStops - 2));
+ 
+-        var tile = geoJSONTile ? new WorkerTile(params) : undefined;
++                    var fourZoomLevels = [];
++                    for (var s = 0; s < 4; s++) {
++                        fourZoomLevels.push(zoomLevels[Math.min(stopOffset + s, zoomLevels.length - 1)]);
++                    }
+ 
+-        this.loaded[source] = this.loaded[source] || {};
+-        this.loaded[source][params.uid] = tile;
++                    var components = attribute.components;
++                    if (components === 1) {
++                        paintAttributes.attributes.push(util.extend({}, attribute, {
++                            getValue: createFunctionGetValue(attribute, fourZoomLevels),
++                            isFunction: true,
++                            components: components * 4
++                        }));
++                    } else {
++                        for (var k = 0; k < 4; k++) {
++                            paintAttributes.attributes.push(util.extend({}, attribute, {
++                                getValue: createFunctionGetValue(attribute, [fourZoomLevels[k]]),
++                                isFunction: true,
++                                name: attribute.name + k
++                            }));
++                        }
++                    }
+ 
+-        if (geoJSONTile) {
+-            var geojsonWrapper = new GeoJSONWrapper(geoJSONTile.features);
+-            geojsonWrapper.name = '_geojsonTileLayer';
+-            var rawTileData = vtpbf({ layers: { '_geojsonTileLayer': geojsonWrapper }}).buffer;
+-            tile.parse(geojsonWrapper, this.layerFamilies, this.actor, rawTileData, callback);
+-        } else {
+-            return callback(null, null); // nothing in the given tile
++                    paintAttributes.uniforms.push(util.extend({}, attribute, {
++                        name: 'u_' + attribute.name.slice(2) + '_t',
++                        getValue: createGetUniform(attribute, stopOffset),
++                        components: 1
++                    }));
++                }
++            }
+         }
+     }
+-});
+-
+-function createLayerFamilies(layers) {
+-    var families = {};
+-
+-    for (var layerId in layers) {
+-        var layer = layers[layerId];
+-        var parentLayerId = layer.ref || layer.id;
+-        var parentLayer = layers[parentLayerId];
+-
+-        if (parentLayer.layout && parentLayer.layout.visibility === 'none') continue;
++    return attributes;
++}
+ 
+-        families[parentLayerId] = families[parentLayerId] || [];
+-        if (layerId === parentLayerId) {
+-            families[parentLayerId].unshift(layer);
++function createFunctionGetValue(attribute, stopZoomLevels) {
++    return function(layer, globalProperties, featureProperties) {
++        if (stopZoomLevels.length === 1) {
++            // return one multi-component value like color0
++            return attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevels[0] }), featureProperties);
+         } else {
+-            families[parentLayerId].push(layer);
++            // pack multiple single-component values into a four component attribute
++            var values = [];
++            for (var z = 0; z < stopZoomLevels.length; z++) {
++                var stopZoomLevel = stopZoomLevels[z];
++                values.push(attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevel }), featureProperties)[0]);
++            }
++            return values;
+         }
+-    }
++    };
++}
+ 
+-    return families;
++function createGetUniform(attribute, stopOffset) {
++    return function(layer, globalProperties) {
++        // stopInterp indicates which stops need to be interpolated.
++        // If stopInterp is 3.5 then interpolate half way between stops 3 and 4.
++        var stopInterp = layer.getPaintInterpolationT(attribute.paintProperty, globalProperties.zoom);
++        // We can only store four stop values in the buffers. stopOffset is the number of stops that come
++        // before the stops that were added to the buffers.
++        return [Math.max(0, Math.min(4, stopInterp - stopOffset))];
++    };
+ }
+ 
+-},{"../style/style_layer":293,"../util/actor":333,"../util/ajax":334,"../util/util":349,"./geojson_wrapper":275,"./worker_tile":286,"geojson-rewind":353,"geojson-vt":358,"pbf":402,"supercluster":407,"vector-tile":413,"vt-pbf":417}],286:[function(require,module,exports){
++},{"../render/vertex_array_object":286,"../util/struct_array":360,"../util/util":362,"./bucket/circle_bucket":261,"./bucket/fill_bucket":262,"./bucket/line_bucket":263,"./bucket/symbol_bucket":264,"./buffer":265,"feature-filter":99}],261:[function(require,module,exports){
+ 'use strict';
+ 
+-var FeatureIndex = require('../data/feature_index');
+-var CollisionTile = require('../symbol/collision_tile');
+-var Bucket = require('../data/bucket');
+-var CollisionBoxArray = require('../symbol/collision_box');
+-var DictionaryCoder = require('../util/dictionary_coder');
++var Bucket = require('../bucket');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
++var EXTENT = Bucket.EXTENT;
+ 
+-module.exports = WorkerTile;
++module.exports = CircleBucket;
+ 
+-function WorkerTile(params) {
+-    this.coord = params.coord;
+-    this.uid = params.uid;
+-    this.zoom = params.zoom;
+-    this.tileSize = params.tileSize;
+-    this.source = params.source;
+-    this.overscaling = params.overscaling;
+-    this.angle = params.angle;
+-    this.pitch = params.pitch;
+-    this.showCollisionBoxes = params.showCollisionBoxes;
++/**
++ * Circles are represented by two triangles.
++ *
++ * Each corner has a pos that is the center of the circle and an extrusion
++ * vector that is where it points.
++ * @private
++ */
++function CircleBucket() {
++    Bucket.apply(this, arguments);
+ }
+ 
+-WorkerTile.prototype.parse = function(data, layerFamilies, actor, rawTileData, callback) {
++CircleBucket.prototype = util.inherit(Bucket, {});
+ 
+-    this.status = 'parsing';
+-    this.data = data;
++CircleBucket.prototype.addCircleVertex = function(vertexArray, x, y, extrudeX, extrudeY) {
++    return vertexArray.emplaceBack(
++            (x * 2) + ((extrudeX + 1) / 2),
++            (y * 2) + ((extrudeY + 1) / 2));
++};
+ 
+-    this.collisionBoxArray = new CollisionBoxArray();
+-    var collisionTile = new CollisionTile(this.angle, this.pitch, this.collisionBoxArray);
+-    var featureIndex = new FeatureIndex(this.coord, this.overscaling, collisionTile, data.layers);
+-    var sourceLayerCoder = new DictionaryCoder(data.layers ? Object.keys(data.layers).sort() : ['_geojsonTileLayer']);
++CircleBucket.prototype.programInterfaces = {
++    circle: {
++        vertexBuffer: true,
++        elementBuffer: true,
+ 
+-    var stats = { _total: 0 };
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }],
++        paintAttributes: [{
++            name: 'a_color',
++            components: 4,
++            type: 'Uint8',
++            getValue: function(layer, globalProperties, featureProperties) {
++                return util.premultiply(layer.getPaintValue("circle-color", globalProperties, featureProperties));
++            },
++            multiplier: 255,
++            paintProperty: 'circle-color'
++        }, {
++            name: 'a_radius',
++            components: 1,
++            type: 'Uint16',
++            isLayerConstant: false,
++            getValue: function(layer, globalProperties, featureProperties) {
++                return [layer.getPaintValue("circle-radius", globalProperties, featureProperties)];
++            },
++            multiplier: 10,
++            paintProperty: 'circle-radius'
++        }]
++    }
++};
+ 
+-    var tile = this;
+-    var bucketsById = {};
+-    var bucketsBySourceLayer = {};
+-    var i;
+-    var layer;
+-    var sourceLayerId;
+-    var bucket;
++CircleBucket.prototype.addFeature = function(feature) {
++    var globalProperties = {zoom: this.zoom};
++    var geometries = loadGeometry(feature);
+ 
+-    // Map non-ref layers to buckets.
+-    var bucketIndex = 0;
+-    for (var layerId in layerFamilies) {
+-        layer = layerFamilies[layerId][0];
++    var startGroup = this.makeRoomFor('circle', 0);
++    var startIndex = startGroup.layout.vertex.length;
+ 
+-        if (layer.source !== this.source) continue;
+-        if (layer.ref) continue;
+-        if (layer.minzoom && this.zoom < layer.minzoom) continue;
+-        if (layer.maxzoom && this.zoom >= layer.maxzoom) continue;
+-        if (layer.layout && layer.layout.visibility === 'none') continue;
+-        if (data.layers && !data.layers[layer.sourceLayer]) continue;
++    for (var j = 0; j < geometries.length; j++) {
++        for (var k = 0; k < geometries[j].length; k++) {
+ 
+-        bucket = Bucket.create({
+-            layer: layer,
+-            index: bucketIndex++,
+-            childLayers: layerFamilies[layerId],
+-            zoom: this.zoom,
+-            overscaling: this.overscaling,
+-            showCollisionBoxes: this.showCollisionBoxes,
+-            collisionBoxArray: this.collisionBoxArray,
+-            sourceLayerIndex: sourceLayerCoder.encode(layer.sourceLayer || '_geojsonTileLayer')
+-        });
+-        bucket.createFilter();
++            var x = geometries[j][k].x;
++            var y = geometries[j][k].y;
+ 
+-        bucketsById[layer.id] = bucket;
++            // Do not include points that are outside the tile boundaries.
++            if (x < 0 || x >= EXTENT || y < 0 || y >= EXTENT) continue;
+ 
+-        if (data.layers) { // vectortile
+-            sourceLayerId = layer.sourceLayer;
+-            bucketsBySourceLayer[sourceLayerId] = bucketsBySourceLayer[sourceLayerId] || {};
+-            bucketsBySourceLayer[sourceLayerId][layer.id] = bucket;
+-        }
+-    }
++            // this geometry will be of the Point type, and we'll derive
++            // two triangles from it.
++            //
++            // ┌─────────┐
++            // │ 3     2 │
++            // │         │
++            // │ 0     1 │
++            // └─────────┘
+ 
+-    // read each layer, and sort its features into buckets
+-    if (data.layers) { // vectortile
+-        for (sourceLayerId in bucketsBySourceLayer) {
+-            layer = data.layers[sourceLayerId];
+-            if (layer) {
+-                sortLayerIntoBuckets(layer, bucketsBySourceLayer[sourceLayerId]);
+-            }
+-        }
+-    } else { // geojson
+-        sortLayerIntoBuckets(data, bucketsById);
+-    }
++            var group = this.makeRoomFor('circle', 4);
++            var vertexArray = group.layout.vertex;
+ 
+-    function sortLayerIntoBuckets(layer, buckets) {
+-        for (var i = 0; i < layer.length; i++) {
+-            var feature = layer.feature(i);
+-            feature.index = i;
+-            for (var id in buckets) {
+-                if (buckets[id].filter(feature))
+-                    buckets[id].features.push(feature);
+-            }
++            var index = this.addCircleVertex(vertexArray, x, y, -1, -1);
++            this.addCircleVertex(vertexArray, x, y, 1, -1);
++            this.addCircleVertex(vertexArray, x, y, 1, 1);
++            this.addCircleVertex(vertexArray, x, y, -1, 1);
++
++            group.layout.element.emplaceBack(index, index + 1, index + 2);
++            group.layout.element.emplaceBack(index, index + 3, index + 2);
+         }
+     }
+ 
+-    var buckets = [],
+-        symbolBuckets = this.symbolBuckets = [],
+-        otherBuckets = [];
++    this.addPaintAttributes('circle', globalProperties, feature.properties, startGroup, startIndex);
++};
++
++},{"../../util/util":362,"../bucket":260,"../load_geometry":267}],262:[function(require,module,exports){
++'use strict';
++
++var Bucket = require('../bucket');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
++
++module.exports = FillBucket;
++
++function FillBucket() {
++    Bucket.apply(this, arguments);
++}
++
++FillBucket.prototype = util.inherit(Bucket, {});
++
++FillBucket.prototype.programInterfaces = {
++    fill: {
++        vertexBuffer: true,
++        elementBuffer: true,
++        elementBuffer2: true,
++        elementBuffer2Components: 2,
+ 
+-    featureIndex.bucketLayerIDs = {};
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }]
++    }
++};
+ 
+-    for (var id in bucketsById) {
+-        bucket = bucketsById[id];
+-        if (bucket.features.length === 0) continue;
++FillBucket.prototype.addFeature = function(feature) {
++    var lines = loadGeometry(feature);
++    for (var i = 0; i < lines.length; i++) {
++        this.addFill(lines[i]);
++    }
++};
+ 
+-        featureIndex.bucketLayerIDs[bucket.index] = bucket.childLayers.map(getLayerId);
++FillBucket.prototype.addFill = function(vertices) {
++    if (vertices.length < 3) {
++        //console.warn('a fill must have at least three vertices');
++        return;
++    }
+ 
+-        buckets.push(bucket);
++    // Calculate the total number of vertices we're going to produce so that we
++    // can resize the buffer beforehand, or detect whether the current line
++    // won't fit into the buffer anymore.
++    // In order to be able to use the vertex buffer for drawing the antialiased
++    // outlines, we separate all polygon vertices with a degenerate (out-of-
++    // viewplane) vertex.
+ 
+-        if (bucket.type === 'symbol')
+-            symbolBuckets.push(bucket);
+-        else
+-            otherBuckets.push(bucket);
+-    }
++    var len = vertices.length;
+ 
+-    var icons = {};
+-    var stacks = {};
+-    var deps = 0;
++    // Expand this geometry buffer to hold all the required vertices.
++    var group = this.makeRoomFor('fill', len + 1);
+ 
++    // We're generating triangle fans, so we always start with the first coordinate in this polygon.
++    var firstIndex, prevIndex;
++    for (var i = 0; i < vertices.length; i++) {
++        var currentVertex = vertices[i];
+ 
+-    if (symbolBuckets.length > 0) {
++        var currentIndex = group.layout.vertex.emplaceBack(currentVertex.x, currentVertex.y);
++        if (i === 0) firstIndex = currentIndex;
+ 
+-        // Get dependencies for symbol buckets
+-        for (i = symbolBuckets.length - 1; i >= 0; i--) {
+-            symbolBuckets[i].updateIcons(icons);
+-            symbolBuckets[i].updateFont(stacks);
++        // Only add triangles that have distinct vertices.
++        if (i >= 2 && (currentVertex.x !== vertices[0].x || currentVertex.y !== vertices[0].y)) {
++            group.layout.element.emplaceBack(firstIndex, prevIndex, currentIndex);
+         }
+ 
+-        for (var fontName in stacks) {
+-            stacks[fontName] = Object.keys(stacks[fontName]).map(Number);
++        if (i >= 1) {
++            group.layout.element2.emplaceBack(prevIndex, currentIndex);
+         }
+-        icons = Object.keys(icons);
+ 
+-        actor.send('get glyphs', {uid: this.uid, stacks: stacks}, function(err, newStacks) {
+-            stacks = newStacks;
+-            gotDependency(err);
+-        });
+-
+-        if (icons.length) {
+-            actor.send('get icons', {icons: icons}, function(err, newIcons) {
+-                icons = newIcons;
+-                gotDependency(err);
+-            });
+-        } else {
+-            gotDependency();
+-        }
++        prevIndex = currentIndex;
+     }
++};
+ 
+-    // immediately parse non-symbol buckets (they have no dependencies)
+-    for (i = otherBuckets.length - 1; i >= 0; i--) {
+-        parseBucket(this, otherBuckets[i]);
+-    }
++},{"../../util/util":362,"../bucket":260,"../load_geometry":267}],263:[function(require,module,exports){
++'use strict';
+ 
+-    if (symbolBuckets.length === 0)
+-        return done();
++var Bucket = require('../bucket');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
++var EXTENT = Bucket.EXTENT;
+ 
+-    function gotDependency(err) {
+-        if (err) return callback(err);
+-        deps++;
+-        if (deps === 2) {
+-            // all symbol bucket dependencies fetched; parse them in proper order
+-            for (var i = symbolBuckets.length - 1; i >= 0; i--) {
+-                parseBucket(tile, symbolBuckets[i]);
+-            }
+-            done();
+-        }
+-    }
++// NOTE ON EXTRUDE SCALE:
++// scale the extrusion vector so that the normal length is this value.
++// contains the "texture" normals (-1..1). this is distinct from the extrude
++// normals for line joins, because the x-value remains 0 for the texture
++// normal array, while the extrude normal actually moves the vertex to create
++// the acute/bevelled line join.
++var EXTRUDE_SCALE = 63;
+ 
+-    function parseBucket(tile, bucket) {
+-        var now = Date.now();
+-        bucket.populateBuffers(collisionTile, stacks, icons);
+-        var time = Date.now() - now;
++/*
++ * Sharp corners cause dashed lines to tilt because the distance along the line
++ * is the same at both the inner and outer corners. To improve the appearance of
++ * dashed lines we add extra points near sharp corners so that a smaller part
++ * of the line is tilted.
++ *
++ * COS_HALF_SHARP_CORNER controls how sharp a corner has to be for us to add an
++ * extra vertex. The default is 75 degrees.
++ *
++ * The newly created vertices are placed SHARP_CORNER_OFFSET pixels from the corner.
++ */
++var COS_HALF_SHARP_CORNER = Math.cos(75 / 2 * (Math.PI / 180));
++var SHARP_CORNER_OFFSET = 15;
+ 
++// The number of bits that is used to store the line distance in the buffer.
++var LINE_DISTANCE_BUFFER_BITS = 14;
+ 
+-        if (bucket.type !== 'symbol') {
+-            for (var i = 0; i < bucket.features.length; i++) {
+-                var feature = bucket.features[i];
+-                featureIndex.insert(feature, feature.index, bucket.sourceLayerIndex, bucket.index);
+-            }
+-        }
++// We don't have enough bits for the line distance as we'd like to have, so
++// use this value to scale the line distance (in tile units) down to a smaller
++// value. This lets us store longer distances while sacrificing precision.
++var LINE_DISTANCE_SCALE = 1 / 2;
+ 
+-        bucket.features = null;
++// The maximum line distance, in tile units, that fits in the buffer.
++var MAX_LINE_DISTANCE = Math.pow(2, LINE_DISTANCE_BUFFER_BITS) / LINE_DISTANCE_SCALE;
+ 
+-        stats._total += time;
+-        stats[bucket.id] = (stats[bucket.id] || 0) + time;
+-    }
+ 
+-    function done() {
+-        tile.status = 'done';
++module.exports = LineBucket;
+ 
+-        if (tile.redoPlacementAfterDone) {
+-            tile.redoPlacement(tile.angle, tile.pitch, null);
+-            tile.redoPlacementAfterDone = false;
+-        }
++/**
++ * @private
++ */
++function LineBucket() {
++    Bucket.apply(this, arguments);
++}
+ 
+-        var featureIndex_ = featureIndex.serialize();
+-        var collisionTile_ = collisionTile.serialize();
+-        var collisionBoxArray = tile.collisionBoxArray.serialize();
+-        var transferables = [rawTileData].concat(featureIndex_.transferables).concat(collisionTile_.transferables);
++LineBucket.prototype = util.inherit(Bucket, {});
+ 
+-        var nonEmptyBuckets = buckets.filter(isBucketEmpty);
++LineBucket.prototype.addLineVertex = function(vertexBuffer, point, extrude, tx, ty, dir, linesofar) {
++    return vertexBuffer.emplaceBack(
++            // a_pos
++            (point.x << 1) | tx,
++            (point.y << 1) | ty,
++            // a_data
++            // add 128 to store an byte in an unsigned byte
++            Math.round(EXTRUDE_SCALE * extrude.x) + 128,
++            Math.round(EXTRUDE_SCALE * extrude.y) + 128,
++            // Encode the -1/0/1 direction value into the first two bits of .z of a_data.
++            // Combine it with the lower 6 bits of `linesofar` (shifted by 2 bites to make
++            // room for the direction value). The upper 8 bits of `linesofar` are placed in
++            // the `w` component. `linesofar` is scaled down by `LINE_DISTANCE_SCALE` so that
++            // we can store longer distances while sacrificing precision.
++            ((dir === 0 ? 0 : (dir < 0 ? -1 : 1)) + 1) | (((linesofar * LINE_DISTANCE_SCALE) & 0x3F) << 2),
++            (linesofar * LINE_DISTANCE_SCALE) >> 6);
++};
+ 
+-        callback(null, {
+-            buckets: nonEmptyBuckets.map(serializeBucket),
+-            bucketStats: stats, // TODO put this in a separate message?
+-            featureIndex: featureIndex_.data,
+-            collisionTile: collisionTile_.data,
+-            collisionBoxArray: collisionBoxArray,
+-            rawTileData: rawTileData
+-        }, getTransferables(nonEmptyBuckets).concat(transferables));
++LineBucket.prototype.programInterfaces = {
++    line: {
++        vertexBuffer: true,
++        elementBuffer: true,
++
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }, {
++            name: 'a_data',
++            components: 4,
++            type: 'Uint8'
++        }]
+     }
+ };
+ 
+-WorkerTile.prototype.redoPlacement = function(angle, pitch, showCollisionBoxes) {
+-    if (this.status !== 'done') {
+-        this.redoPlacementAfterDone = true;
+-        this.angle = angle;
+-        return {};
++LineBucket.prototype.addFeature = function(feature) {
++    var lines = loadGeometry(feature);
++    for (var i = 0; i < lines.length; i++) {
++        this.addLine(
++            lines[i],
++            this.layer.layout['line-join'],
++            this.layer.layout['line-cap'],
++            this.layer.layout['line-miter-limit'],
++            this.layer.layout['line-round-limit']
++        );
+     }
++};
+ 
+-    var collisionTile = new CollisionTile(angle, pitch, this.collisionBoxArray);
+-
+-    var buckets = this.symbolBuckets;
++LineBucket.prototype.addLine = function(vertices, join, cap, miterLimit, roundLimit) {
+ 
+-    for (var i = buckets.length - 1; i >= 0; i--) {
+-        buckets[i].placeFeatures(collisionTile, showCollisionBoxes);
++    var len = vertices.length;
++    // If the line has duplicate vertices at the end, adjust length to remove them.
++    while (len > 2 && vertices[len - 1].equals(vertices[len - 2])) {
++        len--;
+     }
+ 
+-    var collisionTile_ = collisionTile.serialize();
++    if (vertices.length < 2) {
++        //console.warn('a line must have at least two vertices');
++        return;
++    }
+ 
+-    var nonEmptyBuckets = buckets.filter(isBucketEmpty);
++    if (join === 'bevel') miterLimit = 1.05;
+ 
+-    return {
+-        result: {
+-            buckets: nonEmptyBuckets.map(serializeBucket),
+-            collisionTile: collisionTile_.data
+-        },
+-        transferables: getTransferables(nonEmptyBuckets).concat(collisionTile_.transferables)
+-    };
+-};
++    var sharpCornerOffset = SHARP_CORNER_OFFSET * (EXTENT / (512 * this.overscaling));
+ 
+-function isBucketEmpty(bucket) {
+-    for (var programName in bucket.arrayGroups) {
+-        var programArrayGroups = bucket.arrayGroups[programName];
+-        for (var k = 0; k < programArrayGroups.length; k++) {
+-            var programArrayGroup = programArrayGroups[k];
+-            for (var layoutOrPaint in programArrayGroup) {
+-                var arrays = programArrayGroup[layoutOrPaint];
+-                for (var bufferName in arrays) {
+-                    if (arrays[bufferName].length > 0) return true;
+-                }
+-            }
+-        }
+-    }
+-    return false;
+-}
++    var firstVertex = vertices[0],
++        lastVertex = vertices[len - 1],
++        closed = firstVertex.equals(lastVertex);
+ 
+-function serializeBucket(bucket) {
+-    return bucket.serialize();
+-}
++    // we could be more precise, but it would only save a negligible amount of space
++    this.makeRoomFor('line', len * 10);
+ 
+-function getTransferables(buckets) {
+-    var transferables = [];
+-    for (var i in buckets) {
+-        var bucket = buckets[i];
+-        for (var programName in bucket.arrayGroups) {
+-            var programArrayGroups = bucket.arrayGroups[programName];
+-            for (var k = 0; k < programArrayGroups.length; k++) {
+-                var programArrayGroup = programArrayGroups[k];
+-                for (var layoutOrPaint in programArrayGroup) {
+-                    var arrays = programArrayGroup[layoutOrPaint];
+-                    for (var bufferName in arrays) {
+-                        transferables.push(arrays[bufferName].arrayBuffer);
+-                    }
+-                }
+-            }
+-        }
++    if (len === 2 && closed) {
++        // console.warn('a line may not have coincident points');
++        return;
+     }
+-    return transferables;
+-}
+ 
+-function getLayerId(layer) {
+-    return layer.id;
+-}
++    this.distance = 0;
+ 
+-},{"../data/bucket":247,"../data/feature_index":253,"../symbol/collision_box":306,"../symbol/collision_tile":308,"../util/dictionary_coder":340}],287:[function(require,module,exports){
+-'use strict';
++    var beginCap = cap,
++        endCap = closed ? 'butt' : cap,
++        startOfLine = true,
++        currentVertex, prevVertex, nextVertex, prevNormal, nextNormal, offsetA, offsetB;
+ 
+-module.exports = AnimationLoop;
++    // the last three vertices added
++    this.e1 = this.e2 = this.e3 = -1;
+ 
+-function AnimationLoop() {
+-    this.n = 0;
+-    this.times = [];
+-}
++    if (closed) {
++        currentVertex = vertices[len - 2];
++        nextNormal = firstVertex.sub(currentVertex)._unit()._perp();
++    }
+ 
+-// Are all animations done?
+-AnimationLoop.prototype.stopped = function() {
+-    this.times = this.times.filter(function(t) {
+-        return t.time >= (new Date()).getTime();
+-    });
+-    return !this.times.length;
+-};
++    for (var i = 0; i < len; i++) {
+ 
+-// Add a new animation that will run t milliseconds
+-// Returns an id that can be used to cancel it layer
+-AnimationLoop.prototype.set = function(t) {
+-    this.times.push({ id: this.n, time: t + (new Date()).getTime() });
+-    return this.n++;
+-};
++        nextVertex = closed && i === len - 1 ?
++            vertices[1] : // if the line is closed, we treat the last vertex like the first
++            vertices[i + 1]; // just the next vertex
+ 
+-// Cancel an animation
+-AnimationLoop.prototype.cancel = function(n) {
+-    this.times = this.times.filter(function(t) {
+-        return t.id !== n;
+-    });
+-};
++        // if two consecutive vertices exist, skip the current one
++        if (nextVertex && vertices[i].equals(nextVertex)) continue;
+ 
+-},{}],288:[function(require,module,exports){
+-'use strict';
++        if (nextNormal) prevNormal = nextNormal;
++        if (currentVertex) prevVertex = currentVertex;
+ 
+-var Evented = require('../util/evented');
+-var ajax = require('../util/ajax');
+-var browser = require('../util/browser');
+-var normalizeURL = require('../util/mapbox').normalizeSpriteURL;
++        currentVertex = vertices[i];
+ 
+-module.exports = ImageSprite;
++        // Calculate the normal towards the next vertex in this line. In case
++        // there is no next vertex, pretend that the line is continuing straight,
++        // meaning that we are just using the previous normal.
++        nextNormal = nextVertex ? nextVertex.sub(currentVertex)._unit()._perp() : prevNormal;
+ 
+-function ImageSprite(base) {
+-    this.base = base;
+-    this.retina = browser.devicePixelRatio > 1;
++        // If we still don't have a previous normal, this is the beginning of a
++        // non-closed line, so we're doing a straight "join".
++        prevNormal = prevNormal || nextNormal;
+ 
+-    var format = this.retina ? '@2x' : '';
++        // Determine the normal of the join extrusion. It is the angle bisector
++        // of the segments between the previous line and the next line.
++        var joinNormal = prevNormal.add(nextNormal)._unit();
+ 
+-    ajax.getJSON(normalizeURL(base, format, '.json'), function(err, data) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
+-        }
++        /*  joinNormal     prevNormal
++         *             ↖      ↑
++         *                .________. prevVertex
++         *                |
++         * nextNormal  ←  |  currentVertex
++         *                |
++         *     nextVertex !
++         *
++         */
+ 
+-        this.data = data;
+-        if (this.img) this.fire('load');
+-    }.bind(this));
++        // Calculate the length of the miter (the ratio of the miter to the width).
++        // Find the cosine of the angle between the next and join normals
++        // using dot product. The inverse of that is the miter length.
++        var cosHalfAngle = joinNormal.x * nextNormal.x + joinNormal.y * nextNormal.y;
++        var miterLength = 1 / cosHalfAngle;
+ 
+-    ajax.getImage(normalizeURL(base, format, '.png'), function(err, img) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
+-        }
++        var isSharpCorner = cosHalfAngle < COS_HALF_SHARP_CORNER && prevVertex && nextVertex;
+ 
+-        // premultiply the sprite
+-        var data = img.getData();
+-        var newdata = img.data = new Uint8Array(data.length);
+-        for (var i = 0; i < data.length; i += 4) {
+-            var alpha = data[i + 3] / 255;
+-            newdata[i + 0] = data[i + 0] * alpha;
+-            newdata[i + 1] = data[i + 1] * alpha;
+-            newdata[i + 2] = data[i + 2] * alpha;
+-            newdata[i + 3] = data[i + 3];
++        if (isSharpCorner && i > 0) {
++            var prevSegmentLength = currentVertex.dist(prevVertex);
++            if (prevSegmentLength > 2 * sharpCornerOffset) {
++                var newPrevVertex = currentVertex.sub(currentVertex.sub(prevVertex)._mult(sharpCornerOffset / prevSegmentLength)._round());
++                this.distance += newPrevVertex.dist(prevVertex);
++                this.addCurrentVertex(newPrevVertex, this.distance, prevNormal.mult(1), 0, 0, false);
++                prevVertex = newPrevVertex;
++            }
+         }
+ 
+-        this.img = img;
+-        if (this.data) this.fire('load');
+-    }.bind(this));
+-}
+-
+-ImageSprite.prototype = Object.create(Evented);
+-
+-ImageSprite.prototype.toJSON = function() {
+-    return this.base;
+-};
+-
+-ImageSprite.prototype.loaded = function() {
+-    return !!(this.data && this.img);
+-};
+-
+-ImageSprite.prototype.resize = function(/*gl*/) {
+-    if (browser.devicePixelRatio > 1 !== this.retina) {
+-        var newSprite = new ImageSprite(this.base);
+-        newSprite.on('load', function() {
+-            this.img = newSprite.img;
+-            this.data = newSprite.data;
+-            this.retina = newSprite.retina;
+-        }.bind(this));
+-    }
+-};
++        // The join if a middle vertex, otherwise the cap.
++        var middleVertex = prevVertex && nextVertex;
++        var currentJoin = middleVertex ? join : nextVertex ? beginCap : endCap;
+ 
+-function SpritePosition() {}
+-SpritePosition.prototype = { x: 0, y: 0, width: 0, height: 0, pixelRatio: 1, sdf: false };
++        if (middleVertex && currentJoin === 'round') {
++            if (miterLength < roundLimit) {
++                currentJoin = 'miter';
++            } else if (miterLength <= 2) {
++                currentJoin = 'fakeround';
++            }
++        }
+ 
+-ImageSprite.prototype.getSpritePosition = function(name) {
+-    if (!this.loaded()) return new SpritePosition();
++        if (currentJoin === 'miter' && miterLength > miterLimit) {
++            currentJoin = 'bevel';
++        }
+ 
+-    var pos = this.data && this.data[name];
+-    if (pos && this.img) return pos;
++        if (currentJoin === 'bevel') {
++            // The maximum extrude length is 128 / 63 = 2 times the width of the line
++            // so if miterLength >= 2 we need to draw a different type of bevel where.
++            if (miterLength > 2) currentJoin = 'flipbevel';
+ 
+-    return new SpritePosition();
+-};
++            // If the miterLength is really small and the line bevel wouldn't be visible,
++            // just draw a miter join to save a triangle.
++            if (miterLength < miterLimit) currentJoin = 'miter';
++        }
+ 
+-},{"../util/ajax":334,"../util/browser":335,"../util/evented":341,"../util/mapbox":346}],289:[function(require,module,exports){
+-'use strict';
++        // Calculate how far along the line the currentVertex is
++        if (prevVertex) this.distance += currentVertex.dist(prevVertex);
+ 
+-var parseCSSColor = require('csscolorparser').parseCSSColor;
+-var util = require('../util/util');
++        if (currentJoin === 'miter') {
+ 
+-var colorCache = {};
++            joinNormal._mult(miterLength);
++            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
+ 
+-function parseColor(input) {
++        } else if (currentJoin === 'flipbevel') {
++            // miter is too big, flip the direction to make a beveled join
+ 
+-    if (colorCache[input]) {
+-        return colorCache[input];
++            if (miterLength > 100) {
++                // Almost parallel lines
++                joinNormal = nextNormal.clone();
+ 
+-    // RGBA array
+-    } else if (Array.isArray(input)) {
+-        return input;
++            } else {
++                var direction = prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x > 0 ? -1 : 1;
++                var bevelLength = miterLength * prevNormal.add(nextNormal).mag() / prevNormal.sub(nextNormal).mag();
++                joinNormal._perp()._mult(bevelLength * direction);
++            }
++            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
++            this.addCurrentVertex(currentVertex, this.distance, joinNormal.mult(-1), 0, 0, false);
+ 
+-    // GL function
+-    } else if (input && input.stops) {
+-        return util.extend({}, input, {
+-            stops: input.stops.map(parseFunctionStopColor)
+-        });
++        } else if (currentJoin === 'bevel' || currentJoin === 'fakeround') {
++            var lineTurnsLeft = (prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x) > 0;
++            var offset = -Math.sqrt(miterLength * miterLength - 1);
++            if (lineTurnsLeft) {
++                offsetB = 0;
++                offsetA = offset;
++            } else {
++                offsetA = 0;
++                offsetB = offset;
++            }
+ 
+-    // Color string
+-    } else if (typeof input === 'string') {
+-        var parsedColor = parseCSSColor(input);
+-        if (!parsedColor) { throw new Error('Invalid color ' + input); }
++            // Close previous segment with a bevel
++            if (!startOfLine) {
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, offsetA, offsetB, false);
++            }
+ 
+-        var output = colorDowngrade(parsedColor);
+-        colorCache[input] = output;
+-        return output;
++            if (currentJoin === 'fakeround') {
++                // The join angle is sharp enough that a round join would be visible.
++                // Bevel joins fill the gap between segments with a single pie slice triangle.
++                // Create a round join by adding multiple pie slices. The join isn't actually round, but
++                // it looks like it is at the sizes we render lines at.
+ 
+-    } else {
+-        throw new Error('Invalid color ' + input);
+-    }
++                // Add more triangles for sharper angles.
++                // This math is just a good enough approximation. It isn't "correct".
++                var n = Math.floor((0.5 - (cosHalfAngle - 0.5)) * 8);
++                var approxFractionalJoinNormal;
+ 
+-}
++                for (var m = 0; m < n; m++) {
++                    approxFractionalJoinNormal = nextNormal.mult((m + 1) / (n + 1))._add(prevNormal)._unit();
++                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
++                }
+ 
+-function parseFunctionStopColor(stop) {
+-    return [stop[0], parseColor(stop[1])];
+-}
++                this.addPieSliceVertex(currentVertex, this.distance, joinNormal, lineTurnsLeft);
+ 
+-function colorDowngrade(color) {
+-    return [color[0] / 255, color[1] / 255, color[2] / 255, color[3] / 1];
+-}
++                for (var k = n - 1; k >= 0; k--) {
++                    approxFractionalJoinNormal = prevNormal.mult((k + 1) / (n + 1))._add(nextNormal)._unit();
++                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
++                }
++            }
+ 
+-module.exports = parseColor;
++            // Start next segment
++            if (nextVertex) {
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -offsetA, -offsetB, false);
++            }
+ 
+-},{"../util/util":349,"csscolorparser":351}],290:[function(require,module,exports){
+-'use strict';
++        } else if (currentJoin === 'butt') {
++            if (!startOfLine) {
++                // Close previous segment with a butt
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
++            }
+ 
+-var Evented = require('../util/evented');
+-var StyleLayer = require('./style_layer');
+-var ImageSprite = require('./image_sprite');
+-var GlyphSource = require('../symbol/glyph_source');
+-var SpriteAtlas = require('../symbol/sprite_atlas');
+-var LineAtlas = require('../render/line_atlas');
+-var util = require('../util/util');
+-var ajax = require('../util/ajax');
+-var normalizeURL = require('../util/mapbox').normalizeStyleURL;
+-var browser = require('../util/browser');
+-var Dispatcher = require('../util/dispatcher');
+-var AnimationLoop = require('./animation_loop');
+-var validateStyle = require('./validate_style');
+-var Source = require('../source/source');
+-var styleSpec = require('./style_spec');
+-var StyleFunction = require('./style_function');
++            // Start next segment with a butt
++            if (nextVertex) {
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
++            }
+ 
+-module.exports = Style;
++        } else if (currentJoin === 'square') {
+ 
+-function Style(stylesheet, animationLoop) {
+-    this.animationLoop = animationLoop || new AnimationLoop();
+-    this.dispatcher = new Dispatcher(Math.max(browser.hardwareConcurrency - 1, 1), this);
+-    this.spriteAtlas = new SpriteAtlas(512, 512);
+-    this.lineAtlas = new LineAtlas(256, 512);
++            if (!startOfLine) {
++                // Close previous segment with a square cap
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, false);
+ 
+-    this._layers = {};
+-    this._order  = [];
+-    this._groups = [];
+-    this.sources = {};
+-    this.zoomHistory = {};
++                // The segment is done. Unset vertices to disconnect segments.
++                this.e1 = this.e2 = -1;
++            }
+ 
+-    util.bindAll([
+-        '_forwardSourceEvent',
+-        '_forwardTileEvent',
+-        '_forwardLayerEvent',
+-        '_redoPlacement'
+-    ], this);
++            // Start next segment
++            if (nextVertex) {
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, false);
++            }
+ 
+-    this._resetUpdates();
++        } else if (currentJoin === 'round') {
+ 
+-    var loaded = function(err, stylesheet) {
+-        if (err) {
+-            this.fire('error', {error: err});
+-            return;
+-        }
++            if (!startOfLine) {
++                // Close previous segment with butt
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
+ 
+-        if (validateStyle.emitErrors(this, validateStyle(stylesheet))) return;
++                // Add round cap or linejoin at end of segment
++                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, true);
+ 
+-        this._loaded = true;
+-        this.stylesheet = stylesheet;
++                // The segment is done. Unset vertices to disconnect segments.
++                this.e1 = this.e2 = -1;
++            }
+ 
+-        this.updateClasses();
+ 
+-        var sources = stylesheet.sources;
+-        for (var id in sources) {
+-            this.addSource(id, sources[id]);
++            // Start next segment with a butt
++            if (nextVertex) {
++                // Add round cap before first segment
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, true);
++
++                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
++            }
+         }
+ 
+-        if (stylesheet.sprite) {
+-            this.sprite = new ImageSprite(stylesheet.sprite);
+-            this.sprite.on('load', this.fire.bind(this, 'change'));
++        if (isSharpCorner && i < len - 1) {
++            var nextSegmentLength = currentVertex.dist(nextVertex);
++            if (nextSegmentLength > 2 * sharpCornerOffset) {
++                var newCurrentVertex = currentVertex.add(nextVertex.sub(currentVertex)._mult(sharpCornerOffset / nextSegmentLength)._round());
++                this.distance += newCurrentVertex.dist(currentVertex);
++                this.addCurrentVertex(newCurrentVertex, this.distance, nextNormal.mult(1), 0, 0, false);
++                currentVertex = newCurrentVertex;
++            }
+         }
+ 
+-        this.glyphSource = new GlyphSource(stylesheet.glyphs);
+-        this._resolve();
+-        this.fire('load');
+-    }.bind(this);
++        startOfLine = false;
++    }
+ 
+-    if (typeof stylesheet === 'string') {
+-        ajax.getJSON(normalizeURL(stylesheet), loaded);
+-    } else {
+-        browser.frame(loaded.bind(this, null, stylesheet));
++};
++
++/**
++ * Add two vertices to the buffers.
++ *
++ * @param {Object} currentVertex the line vertex to add buffer vertices for
++ * @param {number} distance the distance from the beginning of the line to the vertex
++ * @param {number} endLeft extrude to shift the left vertex along the line
++ * @param {number} endRight extrude to shift the left vertex along the line
++ * @param {boolean} round whether this is a round cap
++ * @private
++ */
++LineBucket.prototype.addCurrentVertex = function(currentVertex, distance, normal, endLeft, endRight, round) {
++    var tx = round ? 1 : 0;
++    var extrude;
++    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
++    var vertexArray = layoutArrays.vertex;
++    var elementArray = layoutArrays.element;
++
++    extrude = normal.clone();
++    if (endLeft) extrude._sub(normal.perp()._mult(endLeft));
++    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 0, endLeft, distance);
++    if (this.e1 >= 0 && this.e2 >= 0) {
++        elementArray.emplaceBack(this.e1, this.e2, this.e3);
+     }
++    this.e1 = this.e2;
++    this.e2 = this.e3;
+ 
+-    this.on('source.load', function(event) {
+-        var source = event.source;
+-        if (source && source.vectorLayerIds) {
+-            for (var layerId in this._layers) {
+-                var layer = this._layers[layerId];
+-                if (layer.source === source.id) {
+-                    this._validateLayer(layer);
+-                }
+-            }
+-        }
+-    });
+-}
++    extrude = normal.mult(-1);
++    if (endRight) extrude._sub(normal.perp()._mult(endRight));
++    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, tx, 1, -endRight, distance);
++    if (this.e1 >= 0 && this.e2 >= 0) {
++        elementArray.emplaceBack(this.e1, this.e2, this.e3);
++    }
++    this.e1 = this.e2;
++    this.e2 = this.e3;
+ 
+-Style.prototype = util.inherit(Evented, {
+-    _loaded: false,
++    // There is a maximum "distance along the line" that we can store in the buffers.
++    // When we get close to the distance, reset it to zero and add the vertex again with
++    // a distance of zero. The max distance is determined by the number of bits we allocate
++    // to `linesofar`.
++    if (distance > MAX_LINE_DISTANCE / 2) {
++        this.distance = 0;
++        this.addCurrentVertex(currentVertex, this.distance, normal, endLeft, endRight, round);
++    }
++};
+ 
+-    _validateLayer: function(layer) {
+-        var source = this.sources[layer.source];
++/**
++ * Add a single new vertex and a triangle using two previous vertices.
++ * This adds a pie slice triangle near a join to simulate round joins
++ *
++ * @param {Object} currentVertex the line vertex to add buffer vertices for
++ * @param {number} distance the distance from the beggining of the line to the vertex
++ * @param {Object} extrude the offset of the new vertex from the currentVertex
++ * @param {boolean} whether the line is turning left or right at this angle
++ * @private
++ */
++LineBucket.prototype.addPieSliceVertex = function(currentVertex, distance, extrude, lineTurnsLeft) {
++    var ty = lineTurnsLeft ? 1 : 0;
++    extrude = extrude.mult(lineTurnsLeft ? -1 : 1);
++    var layoutArrays = this.arrayGroups.line[this.arrayGroups.line.length - 1].layout;
++    var vertexArray = layoutArrays.vertex;
++    var elementArray = layoutArrays.element;
+ 
+-        if (!layer.sourceLayer) return;
+-        if (!source) return;
+-        if (!source.vectorLayerIds) return;
++    this.e3 = this.addLineVertex(vertexArray, currentVertex, extrude, 0, ty, 0, distance);
+ 
+-        if (source.vectorLayerIds.indexOf(layer.sourceLayer) === -1) {
+-            this.fire('error', {
+-                error: new Error(
+-                    'Source layer "' + layer.sourceLayer + '" ' +
+-                    'does not exist on source "' + source.id + '" ' +
+-                    'as specified by style layer "' + layer.id + '"'
+-                )
+-            });
+-        }
+-    },
++    if (this.e1 >= 0 && this.e2 >= 0) {
++        elementArray.emplaceBack(this.e1, this.e2, this.e3);
++    }
+ 
+-    loaded: function() {
+-        if (!this._loaded)
+-            return false;
++    if (lineTurnsLeft) {
++        this.e2 = this.e3;
++    } else {
++        this.e1 = this.e3;
++    }
++};
+ 
+-        for (var id in this.sources)
+-            if (!this.sources[id].loaded())
+-                return false;
++},{"../../util/util":362,"../bucket":260,"../load_geometry":267}],264:[function(require,module,exports){
++'use strict';
+ 
+-        if (this.sprite && !this.sprite.loaded())
+-            return false;
++var Point = require('point-geometry');
+ 
+-        return true;
+-    },
++var Bucket = require('../bucket');
++var Anchor = require('../../symbol/anchor');
++var getAnchors = require('../../symbol/get_anchors');
++var resolveTokens = require('../../util/token');
++var Quads = require('../../symbol/quads');
++var Shaping = require('../../symbol/shaping');
++var resolveText = require('../../symbol/resolve_text');
++var mergeLines = require('../../symbol/mergelines');
++var clipLine = require('../../symbol/clip_line');
++var util = require('../../util/util');
++var loadGeometry = require('../load_geometry');
++var CollisionFeature = require('../../symbol/collision_feature');
+ 
+-    _resolve: function() {
+-        var layer, layerJSON;
++var shapeText = Shaping.shapeText;
++var shapeIcon = Shaping.shapeIcon;
++var getGlyphQuads = Quads.getGlyphQuads;
++var getIconQuads = Quads.getIconQuads;
+ 
+-        this._layers = {};
+-        this._order  = this.stylesheet.layers.map(function(layer) {
+-            return layer.id;
+-        });
++var EXTENT = Bucket.EXTENT;
+ 
+-        // resolve all layers WITHOUT a ref
+-        for (var i = 0; i < this.stylesheet.layers.length; i++) {
+-            layerJSON = this.stylesheet.layers[i];
+-            if (layerJSON.ref) continue;
+-            layer = StyleLayer.create(layerJSON);
+-            this._layers[layer.id] = layer;
+-            layer.on('error', this._forwardLayerEvent);
+-        }
++module.exports = SymbolBucket;
+ 
+-        // resolve all layers WITH a ref
+-        for (var j = 0; j < this.stylesheet.layers.length; j++) {
+-            layerJSON = this.stylesheet.layers[j];
+-            if (!layerJSON.ref) continue;
+-            var refLayer = this.getLayer(layerJSON.ref);
+-            layer = StyleLayer.create(layerJSON, refLayer);
+-            this._layers[layer.id] = layer;
+-            layer.on('error', this._forwardLayerEvent);
+-        }
++function SymbolBucket(options) {
++    Bucket.apply(this, arguments);
++    this.showCollisionBoxes = options.showCollisionBoxes;
++    this.overscaling = options.overscaling;
++    this.collisionBoxArray = options.collisionBoxArray;
+ 
+-        this._groupLayers();
+-        this._updateWorkerLayers();
+-    },
++    this.sdfIcons = options.sdfIcons;
++    this.iconsNeedLinear = options.iconsNeedLinear;
++    this.adjustedTextSize = options.adjustedTextSize;
++    this.adjustedIconSize = options.adjustedIconSize;
++    this.fontstack = options.fontstack;
++}
+ 
+-    _groupLayers: function() {
+-        var group;
++SymbolBucket.prototype = util.inherit(Bucket, {});
+ 
+-        this._groups = [];
++SymbolBucket.prototype.serialize = function() {
++    var serialized = Bucket.prototype.serialize.apply(this);
++    serialized.sdfIcons = this.sdfIcons;
++    serialized.iconsNeedLinear = this.iconsNeedLinear;
++    serialized.adjustedTextSize = this.adjustedTextSize;
++    serialized.adjustedIconSize = this.adjustedIconSize;
++    serialized.fontstack = this.fontstack;
++    return serialized;
++};
+ 
+-        // Split into groups of consecutive top-level layers with the same source.
+-        for (var i = 0; i < this._order.length; ++i) {
+-            var layer = this._layers[this._order[i]];
++var programAttributes = [{
++    name: 'a_pos',
++    components: 2,
++    type: 'Int16'
++}, {
++    name: 'a_offset',
++    components: 2,
++    type: 'Int16'
++}, {
++    name: 'a_data1',
++    components: 4,
++    type: 'Uint8'
++}, {
++    name: 'a_data2',
++    components: 2,
++    type: 'Uint8'
++}];
+ 
+-            if (!group || layer.source !== group.source) {
+-                group = [];
+-                group.source = layer.source;
+-                this._groups.push(group);
+-            }
++function addVertex(array, x, y, ox, oy, tx, ty, minzoom, maxzoom, labelminzoom) {
++    return array.emplaceBack(
++            // pos
++            x,
++            y,
++            // offset
++            Math.round(ox * 64), // use 1/64 pixels for placement
++            Math.round(oy * 64),
++            // data1
++            tx / 4,                   // tex
++            ty / 4,                   // tex
++            (labelminzoom || 0) * 10, // labelminzoom
++            0,
++            // data2
++            (minzoom || 0) * 10,               // minzoom
++            Math.min(maxzoom || 25, 25) * 10); // minzoom
++}
+ 
+-            group.push(layer);
+-        }
+-    },
++SymbolBucket.prototype.addCollisionBoxVertex = function(vertexArray, point, extrude, maxZoom, placementZoom) {
++    return vertexArray.emplaceBack(
++            // pos
++            point.x,
++            point.y,
++            // extrude
++            Math.round(extrude.x),
++            Math.round(extrude.y),
++            // data
++            maxZoom * 10,
++            placementZoom * 10);
++};
+ 
+-    _updateWorkerLayers: function(ids) {
+-        this.dispatcher.broadcast(ids ? 'update layers' : 'set layers', this._serializeLayers(ids));
+-    },
++SymbolBucket.prototype.programInterfaces = {
+ 
+-    _serializeLayers: function(ids) {
+-        ids = ids || this._order;
+-        var serialized = [];
+-        var options = {includeRefProperties: true};
+-        for (var i = 0; i < ids.length; i++) {
+-            serialized.push(this._layers[ids[i]].serialize(options));
+-        }
+-        return serialized;
++    glyph: {
++        vertexBuffer: true,
++        elementBuffer: true,
++        layoutAttributes: programAttributes
+     },
+ 
+-    _applyClasses: function(classes, options) {
+-        if (!this._loaded) return;
++    icon: {
++        vertexBuffer: true,
++        elementBuffer: true,
++        layoutAttributes: programAttributes
++    },
+ 
+-        classes = classes || [];
+-        options = options || {transition: true};
+-        var transition = this.stylesheet.transition || {};
++    collisionBox: {
++        vertexBuffer: true,
+ 
+-        var layers = this._updates.allPaintProps ? this._layers : this._updates.paintProps;
++        layoutAttributes: [{
++            name: 'a_pos',
++            components: 2,
++            type: 'Int16'
++        }, {
++            name: 'a_extrude',
++            components: 2,
++            type: 'Int16'
++        }, {
++            name: 'a_data',
++            components: 2,
++            type: 'Uint8'
++        }]
++    }
++};
+ 
+-        for (var id in layers) {
+-            var layer = this._layers[id];
+-            var props = this._updates.paintProps[id];
++SymbolBucket.prototype.populateBuffers = function(collisionTile, stacks, icons) {
+ 
+-            if (this._updates.allPaintProps || props.all) {
+-                layer.updatePaintTransitions(classes, options, transition, this.animationLoop);
+-            } else {
+-                for (var paintName in props) {
+-                    this._layers[id].updatePaintTransition(paintName, classes, options, transition, this.animationLoop);
+-                }
+-            }
+-        }
+-    },
++    // To reduce the number of labels that jump around when zooming we need
++    // to use a text-size value that is the same for all zoom levels.
++    // This calculates text-size at a high zoom level so that all tiles can
++    // use the same value when calculating anchor positions.
++    var zoomHistory = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
++    this.adjustedTextMaxSize = this.layer.getLayoutValue('text-size', {zoom: 18, zoomHistory: zoomHistory});
++    this.adjustedTextSize = this.layer.getLayoutValue('text-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
++    this.adjustedIconMaxSize = this.layer.getLayoutValue('icon-size', {zoom: 18, zoomHistory: zoomHistory});
++    this.adjustedIconSize = this.layer.getLayoutValue('icon-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
+ 
+-    _recalculate: function(z) {
+-        for (var sourceId in this.sources)
+-            this.sources[sourceId].used = false;
++    var tileSize = 512 * this.overscaling;
++    this.tilePixelRatio = EXTENT / tileSize;
++    this.compareText = {};
++    this.symbolInstances = [];
++    this.iconsNeedLinear = false;
+ 
+-        this._updateZoomHistory(z);
++    var layout = this.layer.layout;
++    var features = this.features;
++    var textFeatures = this.textFeatures;
+ 
+-        this.rasterFadeDuration = 300;
+-        for (var layerId in this._layers) {
+-            var layer = this._layers[layerId];
++    var horizontalAlign = 0.5,
++        verticalAlign = 0.5;
+ 
+-            layer.recalculate(z, this.zoomHistory);
+-            if (!layer.isHidden(z) && layer.source) {
+-                this.sources[layer.source].used = true;
+-            }
+-        }
++    switch (layout['text-anchor']) {
++    case 'right':
++    case 'top-right':
++    case 'bottom-right':
++        horizontalAlign = 1;
++        break;
++    case 'left':
++    case 'top-left':
++    case 'bottom-left':
++        horizontalAlign = 0;
++        break;
++    }
+ 
+-        var maxZoomTransitionDuration = 300;
+-        if (Math.floor(this.z) !== Math.floor(z)) {
+-            this.animationLoop.set(maxZoomTransitionDuration);
+-        }
++    switch (layout['text-anchor']) {
++    case 'bottom':
++    case 'bottom-right':
++    case 'bottom-left':
++        verticalAlign = 1;
++        break;
++    case 'top':
++    case 'top-right':
++    case 'top-left':
++        verticalAlign = 0;
++        break;
++    }
+ 
+-        this.z = z;
+-        this.fire('zoom');
+-    },
++    var justify = layout['text-justify'] === 'right' ? 1 :
++        layout['text-justify'] === 'left' ? 0 :
++        0.5;
+ 
+-    _updateZoomHistory: function(z) {
++    var oneEm = 24;
++    var lineHeight = layout['text-line-height'] * oneEm;
++    var maxWidth = layout['symbol-placement'] !== 'line' ? layout['text-max-width'] * oneEm : 0;
++    var spacing = layout['text-letter-spacing'] * oneEm;
++    var textOffset = [layout['text-offset'][0] * oneEm, layout['text-offset'][1] * oneEm];
++    var fontstack = this.fontstack = layout['text-font'].join(',');
+ 
+-        var zh = this.zoomHistory;
++    var geometries = [];
++    for (var g = 0; g < features.length; g++) {
++        geometries.push(loadGeometry(features[g]));
++    }
+ 
+-        if (zh.lastIntegerZoom === undefined) {
+-            // first time
+-            zh.lastIntegerZoom = Math.floor(z);
+-            zh.lastIntegerZoomTime = 0;
+-            zh.lastZoom = z;
+-        }
++    if (layout['symbol-placement'] === 'line') {
++        // Merge adjacent lines with the same text to improve labelling.
++        // It's better to place labels on one long line than on many short segments.
++        var merged = mergeLines(features, textFeatures, geometries);
+ 
+-        // check whether an integer zoom level as passed since the last frame
+-        // and if yes, record it with the time. Used for transitioning patterns.
+-        if (Math.floor(zh.lastZoom) < Math.floor(z)) {
+-            zh.lastIntegerZoom = Math.floor(z);
+-            zh.lastIntegerZoomTime = Date.now();
++        geometries = merged.geometries;
++        features = merged.features;
++        textFeatures = merged.textFeatures;
++    }
+ 
+-        } else if (Math.floor(zh.lastZoom) > Math.floor(z)) {
+-            zh.lastIntegerZoom = Math.floor(z + 1);
+-            zh.lastIntegerZoomTime = Date.now();
+-        }
++    var shapedText, shapedIcon;
+ 
+-        zh.lastZoom = z;
+-    },
++    for (var k = 0; k < features.length; k++) {
++        if (!geometries[k]) continue;
+ 
+-    _checkLoaded: function () {
+-        if (!this._loaded) {
+-            throw new Error('Style is not done loading');
++        if (textFeatures[k]) {
++            shapedText = shapeText(textFeatures[k], stacks[fontstack], maxWidth,
++                    lineHeight, horizontalAlign, verticalAlign, justify, spacing, textOffset);
++        } else {
++            shapedText = null;
+         }
+-    },
+ 
+-    /**
+-     * Apply queued style updates in a batch
+-     * @private
+-     */
+-    update: function(classes, options) {
+-        if (!this._updates.changed) return this;
++        if (layout['icon-image']) {
++            var iconName = resolveTokens(features[k].properties, layout['icon-image']);
++            var image = icons[iconName];
++            shapedIcon = shapeIcon(image, layout);
+ 
+-        if (this._updates.allLayers) {
+-            this._groupLayers();
+-            this._updateWorkerLayers();
+-        } else {
+-            var updatedIds = Object.keys(this._updates.layers);
+-            if (updatedIds.length) {
+-                this._updateWorkerLayers(updatedIds);
++            if (image) {
++                if (this.sdfIcons === undefined) {
++                    this.sdfIcons = image.sdf;
++                } else if (this.sdfIcons !== image.sdf) {
++                    console.warn('Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer');
++                }
++                if (image.pixelRatio !== 1) {
++                    this.iconsNeedLinear = true;
++                }
+             }
++        } else {
++            shapedIcon = null;
+         }
+ 
+-        var updatedSourceIds = Object.keys(this._updates.sources);
+-        var i;
+-        for (i = 0; i < updatedSourceIds.length; i++) {
+-            this._reloadSource(updatedSourceIds[i]);
++        if (shapedText || shapedIcon) {
++            this.addFeature(geometries[k], shapedText, shapedIcon, features[k].index);
+         }
++    }
+ 
+-        for (i = 0; i < this._updates.events.length; i++) {
+-            var args = this._updates.events[i];
+-            this.fire(args[0], args[1]);
+-        }
++    this.placeFeatures(collisionTile, this.showCollisionBoxes);
+ 
+-        this._applyClasses(classes, options);
++    this.trimArrays();
++};
+ 
+-        if (this._updates.changed) {
+-            this.fire('change');
+-        }
++SymbolBucket.prototype.addFeature = function(lines, shapedText, shapedIcon, featureIndex) {
++    var layout = this.layer.layout;
+ 
+-        this._resetUpdates();
++    var glyphSize = 24;
+ 
+-        return this;
+-    },
++    var fontScale = this.adjustedTextSize / glyphSize,
++        textMaxSize = this.adjustedTextMaxSize !== undefined ? this.adjustedTextMaxSize : this.adjustedTextSize,
++        textBoxScale = this.tilePixelRatio * fontScale,
++        textMaxBoxScale = this.tilePixelRatio * textMaxSize / glyphSize,
++        iconBoxScale = this.tilePixelRatio * this.adjustedIconSize,
++        symbolMinDistance = this.tilePixelRatio * layout['symbol-spacing'],
++        avoidEdges = layout['symbol-avoid-edges'],
++        textPadding = layout['text-padding'] * this.tilePixelRatio,
++        iconPadding = layout['icon-padding'] * this.tilePixelRatio,
++        textMaxAngle = layout['text-max-angle'] / 180 * Math.PI,
++        textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
++        iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
++        mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
++            layout['text-ignore-placement'] || layout['icon-ignore-placement'],
++        isLine = layout['symbol-placement'] === 'line',
++        textRepeatDistance = symbolMinDistance / 2;
+ 
+-    _resetUpdates: function() {
+-        this._updates = {
+-            events: [],
+-            layers: {},
+-            sources: {},
+-            paintProps: {}
+-        };
+-    },
++    if (isLine) {
++        lines = clipLine(lines, 0, 0, EXTENT, EXTENT);
++    }
+ 
+-    addSource: function(id, source) {
+-        this._checkLoaded();
+-        if (this.sources[id] !== undefined) {
+-            throw new Error('There is already a source with this ID');
++    for (var i = 0; i < lines.length; i++) {
++        var line = lines[i];
++
++        // Calculate the anchor points around which you want to place labels
++        var anchors;
++        if (isLine) {
++            anchors = getAnchors(
++                line,
++                symbolMinDistance,
++                textMaxAngle,
++                shapedText,
++                shapedIcon,
++                glyphSize,
++                textMaxBoxScale,
++                this.overscaling,
++                EXTENT
++            );
++        } else {
++            anchors = [ new Anchor(line[0].x, line[0].y, 0) ];
+         }
+-        if (!Source.is(source) && this._handleErrors(validateStyle.source, 'sources.' + id, source)) return this;
+ 
+-        source = Source.create(source);
+-        this.sources[id] = source;
+-        source.id = id;
+-        source.style = this;
+-        source.dispatcher = this.dispatcher;
+-        source
+-            .on('load', this._forwardSourceEvent)
+-            .on('error', this._forwardSourceEvent)
+-            .on('change', this._forwardSourceEvent)
+-            .on('tile.add', this._forwardTileEvent)
+-            .on('tile.load', this._forwardTileEvent)
+-            .on('tile.error', this._forwardTileEvent)
+-            .on('tile.remove', this._forwardTileEvent)
+-            .on('tile.stats', this._forwardTileEvent);
++        // For each potential label, create the placement features used to check for collisions, and the quads use for rendering.
++        for (var j = 0, len = anchors.length; j < len; j++) {
++            var anchor = anchors[j];
+ 
+-        this._updates.events.push(['source.add', {source: source}]);
+-        this._updates.changed = true;
++            if (shapedText && isLine) {
++                if (this.anchorIsTooClose(shapedText.text, textRepeatDistance, anchor)) {
++                    continue;
++                }
++            }
+ 
+-        return this;
+-    },
++            var inside = !(anchor.x < 0 || anchor.x > EXTENT || anchor.y < 0 || anchor.y > EXTENT);
+ 
+-    /**
+-     * Remove a source from this stylesheet, given its id.
+-     * @param {string} id id of the source to remove
+-     * @returns {Style} this style
+-     * @throws {Error} if no source is found with the given ID
+-     * @private
+-     */
+-    removeSource: function(id) {
+-        this._checkLoaded();
++            if (avoidEdges && !inside) continue;
+ 
+-        if (this.sources[id] === undefined) {
+-            throw new Error('There is no source with this ID');
++            // Normally symbol layers are drawn across tile boundaries. Only symbols
++            // with their anchors within the tile boundaries are added to the buffers
++            // to prevent symbols from being drawn twice.
++            //
++            // Symbols in layers with overlap are sorted in the y direction so that
++            // symbols lower on the canvas are drawn on top of symbols near the top.
++            // To preserve this order across tile boundaries these symbols can't
++            // be drawn across tile boundaries. Instead they need to be included in
++            // the buffers for both tiles and clipped to tile boundaries at draw time.
++            var addToBuffers = inside || mayOverlap;
++
++            this.symbolInstances.push(new SymbolInstance(anchor, line, shapedText, shapedIcon, layout,
++                        addToBuffers, this.symbolInstances.length, this.collisionBoxArray, featureIndex, this.sourceLayerIndex, this.index,
++                        textBoxScale, textPadding, textAlongLine,
++                        iconBoxScale, iconPadding, iconAlongLine));
+         }
+-        var source = this.sources[id];
+-        delete this.sources[id];
+-        source
+-            .off('load', this._forwardSourceEvent)
+-            .off('error', this._forwardSourceEvent)
+-            .off('change', this._forwardSourceEvent)
+-            .off('tile.add', this._forwardTileEvent)
+-            .off('tile.load', this._forwardTileEvent)
+-            .off('tile.error', this._forwardTileEvent)
+-            .off('tile.remove', this._forwardTileEvent)
+-            .off('tile.stats', this._forwardTileEvent);
++    }
++};
+ 
+-        this._updates.events.push(['source.remove', {source: source}]);
+-        this._updates.changed = true;
++SymbolBucket.prototype.anchorIsTooClose = function(text, repeatDistance, anchor) {
++    var compareText = this.compareText;
++    if (!(text in compareText)) {
++        compareText[text] = [];
++    } else {
++        var otherAnchors = compareText[text];
++        for (var k = otherAnchors.length - 1; k >= 0; k--) {
++            if (anchor.dist(otherAnchors[k]) < repeatDistance) {
++                // If it's within repeatDistance of one anchor, stop looking
++                return true;
++            }
++        }
++    }
++    // If anchor is not within repeatDistance of any other anchor, add to array
++    compareText[text].push(anchor);
++    return false;
++};
+ 
+-        return this;
+-    },
++SymbolBucket.prototype.placeFeatures = function(collisionTile, showCollisionBoxes) {
++    this.recalculateStyleLayers();
+ 
+-    /**
+-     * Get a source by id.
+-     * @param {string} id id of the desired source
+-     * @returns {Object} source
+-     * @private
+-     */
+-    getSource: function(id) {
+-        return this.sources[id];
+-    },
++    // Calculate which labels can be shown and when they can be shown and
++    // create the bufers used for rendering.
+ 
+-    /**
+-     * Add a layer to the map style. The layer will be inserted before the layer with
+-     * ID `before`, or appended if `before` is omitted.
+-     * @param {StyleLayer|Object} layer
+-     * @param {string=} before  ID of an existing layer to insert before
+-     * @fires layer.add
+-     * @returns {Style} `this`
+-     * @private
+-     */
+-    addLayer: function(layer, before) {
+-        this._checkLoaded();
++    this.createArrays();
+ 
+-        if (!(layer instanceof StyleLayer)) {
+-            // this layer is not in the style.layers array, so we pass an impossible array index
+-            if (this._handleErrors(validateStyle.layer,
+-                    'layers.' + layer.id, layer, false, {arrayIndex: -1})) return this;
++    var layout = this.layer.layout;
+ 
+-            var refLayer = layer.ref && this.getLayer(layer.ref);
+-            layer = StyleLayer.create(layer, refLayer);
+-        }
+-        this._validateLayer(layer);
++    var maxScale = collisionTile.maxScale;
+ 
+-        layer.on('error', this._forwardLayerEvent);
++    var textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
++    var iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
+ 
+-        this._layers[layer.id] = layer;
+-        this._order.splice(before ? this._order.indexOf(before) : Infinity, 0, layer.id);
++    var mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
++        layout['text-ignore-placement'] || layout['icon-ignore-placement'];
+ 
+-        this._updates.allLayers = true;
+-        if (layer.source) {
+-            this._updates.sources[layer.source] = true;
+-        }
+-        this._updates.events.push(['layer.add', {layer: layer}]);
++    // Sort symbols by their y position on the canvas so that they lower symbols
++    // are drawn on top of higher symbols.
++    // Don't sort symbols that won't overlap because it isn't necessary and
++    // because it causes more labels to pop in and out when rotating.
++    if (mayOverlap) {
++        var angle = collisionTile.angle;
++        var sin = Math.sin(angle),
++            cos = Math.cos(angle);
+ 
+-        return this.updateClasses(layer.id);
+-    },
++        this.symbolInstances.sort(function(a, b) {
++            var aRotated = (sin * a.x + cos * a.y) | 0;
++            var bRotated = (sin * b.x + cos * b.y) | 0;
++            return (aRotated - bRotated) || (b.index - a.index);
++        });
++    }
+ 
+-    /**
+-     * Remove a layer from this stylesheet, given its id.
+-     * @param {string} id id of the layer to remove
+-     * @returns {Style} this style
+-     * @throws {Error} if no layer is found with the given ID
+-     * @private
+-     */
+-    removeLayer: function(id) {
+-        this._checkLoaded();
++    for (var p = 0; p < this.symbolInstances.length; p++) {
++        var symbolInstance = this.symbolInstances[p];
++        var hasText = symbolInstance.hasText;
++        var hasIcon = symbolInstance.hasIcon;
+ 
+-        var layer = this._layers[id];
+-        if (layer === undefined) {
+-            throw new Error('There is no layer with this ID');
+-        }
+-        for (var i in this._layers) {
+-            if (this._layers[i].ref === id) {
+-                this.removeLayer(i);
+-            }
+-        }
++        var iconWithoutText = layout['text-optional'] || !hasText,
++            textWithoutIcon = layout['icon-optional'] || !hasIcon;
+ 
+-        layer.off('error', this._forwardLayerEvent);
+ 
+-        delete this._layers[id];
+-        this._order.splice(this._order.indexOf(id), 1);
++        // Calculate the scales at which the text and icon can be placed without collision.
+ 
+-        this._updates.allLayers = true;
+-        this._updates.events.push(['layer.remove', {layer: layer}]);
+-        this._updates.changed = true;
++        var glyphScale = hasText ?
++            collisionTile.placeCollisionFeature(symbolInstance.textCollisionFeature,
++                    layout['text-allow-overlap'], layout['symbol-avoid-edges']) :
++            collisionTile.minScale;
+ 
+-        return this;
+-    },
++        var iconScale = hasIcon ?
++            collisionTile.placeCollisionFeature(symbolInstance.iconCollisionFeature,
++                    layout['icon-allow-overlap'], layout['symbol-avoid-edges']) :
++            collisionTile.minScale;
+ 
+-    /**
+-     * Return the style layer object with the given `id`.
+-     *
+-     * @param {string} id - id of the desired layer
+-     * @returns {?Object} a layer, if one with the given `id` exists
+-     * @private
+-     */
+-    getLayer: function(id) {
+-        return this._layers[id];
+-    },
+ 
+-    /**
+-     * If a layer has a `ref` property that makes it derive some values
+-     * from another layer, return that referent layer. Otherwise,
+-     * returns the layer itself.
+-     * @param {string} id the layer's id
+-     * @returns {Layer} the referent layer or the layer itself
+-     * @private
+-     */
+-    getReferentLayer: function(id) {
+-        var layer = this.getLayer(id);
+-        if (layer.ref) {
+-            layer = this.getLayer(layer.ref);
+-        }
+-        return layer;
+-    },
++        // Combine the scales for icons and text.
+ 
+-    setLayerZoomRange: function(layerId, minzoom, maxzoom) {
+-        this._checkLoaded();
++        if (!iconWithoutText && !textWithoutIcon) {
++            iconScale = glyphScale = Math.max(iconScale, glyphScale);
++        } else if (!textWithoutIcon && glyphScale) {
++            glyphScale = Math.max(iconScale, glyphScale);
++        } else if (!iconWithoutText && iconScale) {
++            iconScale = Math.max(iconScale, glyphScale);
++        }
+ 
+-        var layer = this.getReferentLayer(layerId);
+ 
+-        if (layer.minzoom === minzoom && layer.maxzoom === maxzoom) return this;
++        // Insert final placement into collision tree and add glyphs/icons to buffers
+ 
+-        if (minzoom != null) {
+-            layer.minzoom = minzoom;
++        if (hasText) {
++            collisionTile.insertCollisionFeature(symbolInstance.textCollisionFeature, glyphScale, layout['text-ignore-placement']);
++            if (glyphScale <= maxScale) {
++                this.addSymbols('glyph', symbolInstance.glyphQuads, glyphScale, layout['text-keep-upright'], textAlongLine, collisionTile.angle);
++            }
+         }
+-        if (maxzoom != null) {
+-            layer.maxzoom = maxzoom;
++
++        if (hasIcon) {
++            collisionTile.insertCollisionFeature(symbolInstance.iconCollisionFeature, iconScale, layout['icon-ignore-placement']);
++            if (iconScale <= maxScale) {
++                this.addSymbols('icon', symbolInstance.iconQuads, iconScale, layout['icon-keep-upright'], iconAlongLine, collisionTile.angle);
++            }
+         }
+-        return this._updateLayer(layer);
+-    },
+ 
+-    setFilter: function(layerId, filter) {
+-        this._checkLoaded();
++    }
+ 
+-        var layer = this.getReferentLayer(layerId);
++    if (showCollisionBoxes) this.addToDebugBuffers(collisionTile);
++};
+ 
+-        if (this._handleErrors(validateStyle.filter, 'layers.' + layer.id + '.filter', filter)) return this;
++SymbolBucket.prototype.addSymbols = function(programName, quads, scale, keepUpright, alongLine, placementAngle) {
+ 
+-        if (util.deepEqual(layer.filter, filter)) return this;
+-        layer.filter = util.clone(filter);
++    var group = this.makeRoomFor(programName, 4 * quads.length);
+ 
+-        return this._updateLayer(layer);
+-    },
++    var elementArray = group.layout.element;
++    var vertexArray = group.layout.vertex;
+ 
+-    /**
+-     * Get a layer's filter object
+-     * @param {string} layer the layer to inspect
+-     * @returns {*} the layer's filter, if any
+-     * @private
+-     */
+-    getFilter: function(layer) {
+-        return this.getReferentLayer(layer).filter;
+-    },
++    var zoom = this.zoom;
++    var placementZoom = Math.max(Math.log(scale) / Math.LN2 + zoom, 0);
+ 
+-    setLayoutProperty: function(layerId, name, value) {
+-        this._checkLoaded();
++    for (var k = 0; k < quads.length; k++) {
+ 
+-        var layer = this.getReferentLayer(layerId);
++        var symbol = quads[k],
++            angle = symbol.angle;
+ 
+-        if (util.deepEqual(layer.getLayoutProperty(name), value)) return this;
++        // drop upside down versions of glyphs
++        var a = (angle + placementAngle + Math.PI) % (Math.PI * 2);
++        if (keepUpright && alongLine && (a <= Math.PI / 2 || a > Math.PI * 3 / 2)) continue;
+ 
+-        layer.setLayoutProperty(name, value);
+-        return this._updateLayer(layer);
+-    },
++        var tl = symbol.tl,
++            tr = symbol.tr,
++            bl = symbol.bl,
++            br = symbol.br,
++            tex = symbol.tex,
++            anchorPoint = symbol.anchorPoint,
+ 
+-    /**
+-     * Get a layout property's value from a given layer
+-     * @param {string} layer the layer to inspect
+-     * @param {string} name the name of the layout property
+-     * @returns {*} the property value
+-     * @private
+-     */
+-    getLayoutProperty: function(layer, name) {
+-        return this.getReferentLayer(layer).getLayoutProperty(name);
+-    },
++            minZoom = Math.max(zoom + Math.log(symbol.minScale) / Math.LN2, placementZoom),
++            maxZoom = Math.min(zoom + Math.log(symbol.maxScale) / Math.LN2, 25);
+ 
+-    setPaintProperty: function(layerId, name, value, klass) {
+-        this._checkLoaded();
++        if (maxZoom <= minZoom) continue;
+ 
+-        var layer = this.getLayer(layerId);
++        // Lower min zoom so that while fading out the label it can be shown outside of collision-free zoom levels
++        if (minZoom === placementZoom) minZoom = 0;
+ 
+-        if (util.deepEqual(layer.getPaintProperty(name, klass), value)) return this;
++        var index = addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tl.x, tl.y, tex.x, tex.y, minZoom, maxZoom, placementZoom);
++        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, tr.x, tr.y, tex.x + tex.w, tex.y, minZoom, maxZoom, placementZoom);
++        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, bl.x, bl.y, tex.x, tex.y + tex.h, minZoom, maxZoom, placementZoom);
++        addVertex(vertexArray, anchorPoint.x, anchorPoint.y, br.x, br.y, tex.x + tex.w, tex.y + tex.h, minZoom, maxZoom, placementZoom);
+ 
+-        var wasFeatureConstant = layer.isPaintValueFeatureConstant(name);
+-        layer.setPaintProperty(name, value, klass);
++        elementArray.emplaceBack(index, index + 1, index + 2);
++        elementArray.emplaceBack(index + 1, index + 2, index + 3);
++    }
+ 
+-        var isFeatureConstant = !(StyleFunction.isFunctionDefinition(value) && value.property !== '$zoom' && value.property !== undefined);
++};
+ 
+-        if (!isFeatureConstant || !wasFeatureConstant) {
+-            this._updates.layers[layerId] = true;
+-            if (layer.source) {
+-                this._updates.sources[layer.source] = true;
+-            }
+-        }
++SymbolBucket.prototype.updateIcons = function(icons) {
++    this.recalculateStyleLayers();
++    var iconValue = this.layer.layout['icon-image'];
++    if (!iconValue) return;
+ 
+-        return this.updateClasses(layerId, name);
+-    },
++    for (var i = 0; i < this.features.length; i++) {
++        var iconName = resolveTokens(this.features[i].properties, iconValue);
++        if (iconName)
++            icons[iconName] = true;
++    }
++};
+ 
+-    getPaintProperty: function(layer, name, klass) {
+-        return this.getLayer(layer).getPaintProperty(name, klass);
+-    },
++SymbolBucket.prototype.updateFont = function(stacks) {
++    this.recalculateStyleLayers();
++    var fontName = this.layer.layout['text-font'],
++        stack = stacks[fontName] = stacks[fontName] || {};
+ 
+-    updateClasses: function (layerId, paintName) {
+-        this._updates.changed = true;
+-        if (!layerId) {
+-            this._updates.allPaintProps = true;
+-        } else {
+-            var props = this._updates.paintProps;
+-            if (!props[layerId]) props[layerId] = {};
+-            props[layerId][paintName || 'all'] = true;
+-        }
+-        return this;
+-    },
++    this.textFeatures = resolveText(this.features, this.layer.layout, stack);
++};
+ 
+-    serialize: function() {
+-        return util.filterObject({
+-            version: this.stylesheet.version,
+-            name: this.stylesheet.name,
+-            metadata: this.stylesheet.metadata,
+-            center: this.stylesheet.center,
+-            zoom: this.stylesheet.zoom,
+-            bearing: this.stylesheet.bearing,
+-            pitch: this.stylesheet.pitch,
+-            sprite: this.stylesheet.sprite,
+-            glyphs: this.stylesheet.glyphs,
+-            transition: this.stylesheet.transition,
+-            sources: util.mapObject(this.sources, function(source) {
+-                return source.serialize();
+-            }),
+-            layers: this._order.map(function(id) {
+-                return this._layers[id].serialize();
+-            }, this)
+-        }, function(value) { return value !== undefined; });
+-    },
++SymbolBucket.prototype.addToDebugBuffers = function(collisionTile) {
++    var group = this.makeRoomFor('collisionBox', 0);
++    var vertexArray = group.layout.vertex;
++    var angle = -collisionTile.angle;
++    var yStretch = collisionTile.yStretch;
+ 
+-    _updateLayer: function (layer) {
+-        this._updates.layers[layer.id] = true;
+-        if (layer.source) {
+-            this._updates.sources[layer.source] = true;
+-        }
+-        this._updates.changed = true;
+-        return this;
+-    },
++    for (var j = 0; j < this.symbolInstances.length; j++) {
++        for (var i = 0; i < 2; i++) {
++            var feature = this.symbolInstances[j][i === 0 ? 'textCollisionFeature' : 'iconCollisionFeature'];
++            if (!feature) continue;
+ 
+-    _flattenRenderedFeatures: function(sourceResults) {
+-        var features = [];
+-        for (var l = this._order.length - 1; l >= 0; l--) {
+-            var layerID = this._order[l];
+-            for (var s = 0; s < sourceResults.length; s++) {
+-                var layerFeatures = sourceResults[s][layerID];
+-                if (layerFeatures) {
+-                    for (var f = 0; f < layerFeatures.length; f++) {
+-                        features.push(layerFeatures[f]);
+-                    }
+-                }
+-            }
+-        }
+-        return features;
+-    },
++            for (var b = feature.boxStartIndex; b < feature.boxEndIndex; b++) {
++                var box = this.collisionBoxArray.get(b);
++                var anchorPoint = box.anchorPoint;
+ 
+-    queryRenderedFeatures: function(queryGeometry, params, zoom, bearing) {
+-        if (params && params.filter) {
+-            this._handleErrors(validateStyle.filter, 'queryRenderedFeatures.filter', params.filter, true);
+-        }
++                var tl = new Point(box.x1, box.y1 * yStretch)._rotate(angle);
++                var tr = new Point(box.x2, box.y1 * yStretch)._rotate(angle);
++                var bl = new Point(box.x1, box.y2 * yStretch)._rotate(angle);
++                var br = new Point(box.x2, box.y2 * yStretch)._rotate(angle);
+ 
+-        var sourceResults = [];
+-        for (var id in this.sources) {
+-            var source = this.sources[id];
+-            if (source.queryRenderedFeatures) {
+-                sourceResults.push(source.queryRenderedFeatures(queryGeometry, params, zoom, bearing));
++                var maxZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.maxScale) / Math.LN2));
++                var placementZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.placementScale) / Math.LN2));
++
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tr, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, br, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, bl, maxZoom, placementZoom);
++                this.addCollisionBoxVertex(vertexArray, anchorPoint, tl, maxZoom, placementZoom);
+             }
+         }
+-        return this._flattenRenderedFeatures(sourceResults);
+-    },
++    }
++};
+ 
+-    querySourceFeatures: function(sourceID, params) {
+-        if (params && params.filter) {
+-            this._handleErrors(validateStyle.filter, 'querySourceFeatures.filter', params.filter, true);
+-        }
+-        var source = this.getSource(sourceID);
+-        return source && source.querySourceFeatures ? source.querySourceFeatures(params) : [];
+-    },
++function SymbolInstance(anchor, line, shapedText, shapedIcon, layout, addToBuffers, index, collisionBoxArray, featureIndex, sourceLayerIndex, bucketIndex,
++                        textBoxScale, textPadding, textAlongLine,
++                        iconBoxScale, iconPadding, iconAlongLine) {
+ 
+-    _handleErrors: function(validate, key, value, throws, props) {
+-        var action = throws ? validateStyle.throwErrors : validateStyle.emitErrors;
+-        var result = validate.call(validateStyle, util.extend({
+-            key: key,
+-            style: this.serialize(),
+-            value: value,
+-            styleSpec: styleSpec
+-        }, props));
+-        return action.call(validateStyle, this, result);
+-    },
++    this.x = anchor.x;
++    this.y = anchor.y;
++    this.index = index;
++    this.hasText = !!shapedText;
++    this.hasIcon = !!shapedIcon;
+ 
+-    _remove: function() {
+-        this.dispatcher.remove();
+-    },
++    if (this.hasText) {
++        this.glyphQuads = addToBuffers ? getGlyphQuads(anchor, shapedText, textBoxScale, line, layout, textAlongLine) : [];
++        this.textCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
++                shapedText, textBoxScale, textPadding, textAlongLine, false);
++    }
+ 
+-    _reloadSource: function(id) {
+-        this.sources[id].reload();
+-    },
++    if (this.hasIcon) {
++        this.iconQuads = addToBuffers ? getIconQuads(anchor, shapedIcon, iconBoxScale, line, layout, iconAlongLine) : [];
++        this.iconCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex,
++                shapedIcon, iconBoxScale, iconPadding, iconAlongLine, true);
++    }
++}
+ 
+-    _updateSources: function(transform) {
+-        for (var id in this.sources) {
+-            this.sources[id].update(transform);
+-        }
+-    },
++},{"../../symbol/anchor":316,"../../symbol/clip_line":318,"../../symbol/collision_feature":320,"../../symbol/get_anchors":322,"../../symbol/mergelines":325,"../../symbol/quads":326,"../../symbol/resolve_text":327,"../../symbol/shaping":328,"../../util/token":361,"../../util/util":362,"../bucket":260,"../load_geometry":267,"point-geometry":400}],265:[function(require,module,exports){
++'use strict';
+ 
+-    _redoPlacement: function() {
+-        for (var id in this.sources) {
+-            if (this.sources[id].redoPlacement) this.sources[id].redoPlacement();
+-        }
+-    },
++var assert = require('assert');
+ 
+-    _forwardSourceEvent: function(e) {
+-        this.fire('source.' + e.type, util.extend({source: e.target}, e));
+-    },
++module.exports = Buffer;
+ 
+-    _forwardTileEvent: function(e) {
+-        this.fire(e.type, util.extend({source: e.target}, e));
+-    },
++/**
++ * The `Buffer` class turns a `StructArray` into a WebGL buffer. Each member of the StructArray's
++ * Struct type is converted to a WebGL atribute.
++ *
++ * @class Buffer
++ * @private
++ * @param {object} array A serialized StructArray.
++ * @param {object} arrayType A serialized StructArrayType.
++ * @param {BufferType} type
++ */
++function Buffer(array, arrayType, type) {
++    this.arrayBuffer = array.arrayBuffer;
++    this.length = array.length;
++    this.attributes = arrayType.members;
++    this.itemSize = arrayType.bytesPerElement;
++    this.type = type;
++    this.arrayType = arrayType;
++}
+ 
+-    _forwardLayerEvent: function(e) {
+-        this.fire('layer.' + e.type, util.extend({layer: {id: e.target.id}}, e));
+-    },
++/**
++ * Bind this buffer to a WebGL context.
++ * @private
++ * @param gl The WebGL context
++ */
++Buffer.prototype.bind = function(gl) {
++    var type = gl[this.type];
+ 
+-    // Callbacks from web workers
++    if (!this.buffer) {
++        this.buffer = gl.createBuffer();
++        gl.bindBuffer(type, this.buffer);
++        gl.bufferData(type, this.arrayBuffer, gl.STATIC_DRAW);
+ 
+-    'get sprite json': function(params, callback) {
+-        var sprite = this.sprite;
+-        if (sprite.loaded()) {
+-            callback(null, { sprite: sprite.data, retina: sprite.retina });
+-        } else {
+-            sprite.on('load', function() {
+-                callback(null, { sprite: sprite.data, retina: sprite.retina });
+-            });
+-        }
+-    },
++        // dump array buffer once it's bound to gl
++        this.arrayBuffer = null;
++    } else {
++        gl.bindBuffer(type, this.buffer);
++    }
++};
+ 
+-    'get icons': function(params, callback) {
+-        var sprite = this.sprite;
+-        var spriteAtlas = this.spriteAtlas;
+-        if (sprite.loaded()) {
+-            spriteAtlas.setSprite(sprite);
+-            spriteAtlas.addIcons(params.icons, callback);
+-        } else {
+-            sprite.on('load', function() {
+-                spriteAtlas.setSprite(sprite);
+-                spriteAtlas.addIcons(params.icons, callback);
+-            });
+-        }
+-    },
++/**
++ * @enum {string} AttributeType
++ * @private
++ * @readonly
++ */
++var AttributeType = {
++    Int8:   'BYTE',
++    Uint8:  'UNSIGNED_BYTE',
++    Int16:  'SHORT',
++    Uint16: 'UNSIGNED_SHORT'
++};
+ 
+-    'get glyphs': function(params, callback) {
+-        var stacks = params.stacks,
+-            remaining = Object.keys(stacks).length,
+-            allGlyphs = {};
++/**
++ * Set the attribute pointers in a WebGL context
++ * @private
++ * @param gl The WebGL context
++ * @param program The active WebGL program
++ */
++Buffer.prototype.setVertexAttribPointers = function(gl, program) {
++    for (var j = 0; j < this.attributes.length; j++) {
++        var member = this.attributes[j];
++        var attribIndex = program[member.name];
++        assert(attribIndex !== undefined, 'array member "' + member.name + '" name does not match shader attribute name');
+ 
+-        for (var fontName in stacks) {
+-            this.glyphSource.getSimpleGlyphs(fontName, stacks[fontName], params.uid, done);
+-        }
++        gl.vertexAttribPointer(
++            attribIndex,
++            member.components,
++            gl[AttributeType[member.type]],
++            false,
++            this.arrayType.bytesPerElement,
++            member.offset
++        );
++    }
++};
+ 
+-        function done(err, glyphs, fontName) {
+-            if (err) console.error(err);
++/**
++ * Destroy the GL buffer bound to the given WebGL context
++ * @private
++ * @param gl The WebGL context
++ */
++Buffer.prototype.destroy = function(gl) {
++    if (this.buffer) {
++        gl.deleteBuffer(this.buffer);
++    }
++};
+ 
+-            allGlyphs[fontName] = glyphs;
+-            remaining--;
++/**
++ * @enum {string} BufferType
++ * @private
++ * @readonly
++ */
++Buffer.BufferType = {
++    VERTEX: 'ARRAY_BUFFER',
++    ELEMENT: 'ELEMENT_ARRAY_BUFFER'
++};
+ 
+-            if (remaining === 0)
+-                callback(null, allGlyphs);
+-        }
+-    }
+-});
++/**
++ * An `BufferType.ELEMENT` buffer holds indicies of a corresponding `BufferType.VERTEX` buffer.
++ * These indicies are stored in the `BufferType.ELEMENT` buffer as `UNSIGNED_SHORT`s.
++ *
++ * @private
++ * @readonly
++ */
++Buffer.ELEMENT_ATTRIBUTE_TYPE = 'Uint16';
++
++/**
++ * WebGL performs best if vertex attribute offsets are aligned to 4 byte boundaries.
++ * @private
++ * @readonly
++ */
++Buffer.VERTEX_ATTRIBUTE_ALIGNMENT = 4;
+ 
+-},{"../render/line_atlas":270,"../source/source":279,"../symbol/glyph_source":311,"../symbol/sprite_atlas":316,"../util/ajax":334,"../util/browser":335,"../util/dispatcher":337,"../util/evented":341,"../util/mapbox":346,"../util/util":349,"./animation_loop":287,"./image_sprite":288,"./style_function":292,"./style_layer":293,"./style_spec":300,"./validate_style":302}],291:[function(require,module,exports){
++},{"assert":29}],266:[function(require,module,exports){
+ 'use strict';
+ 
+-var MapboxGLFunction = require('./style_function');
+-var parseColor = require('./parse_color');
+-var util = require('../util/util');
++var Point = require('point-geometry');
++var loadGeometry = require('./load_geometry');
++var EXTENT = require('./bucket').EXTENT;
++var featureFilter = require('feature-filter');
++var StructArrayType = require('../util/struct_array');
++var Grid = require('grid-index');
++var DictionaryCoder = require('../util/dictionary_coder');
++var vt = require('vector-tile');
++var Protobuf = require('pbf');
++var GeoJSONFeature = require('../util/vectortile_to_geojson');
++var arraysIntersect = require('../util/util').arraysIntersect;
+ 
+-module.exports = StyleDeclaration;
++var intersection = require('../util/intersection_tests');
++var multiPolygonIntersectsBufferedMultiPoint = intersection.multiPolygonIntersectsBufferedMultiPoint;
++var multiPolygonIntersectsMultiPolygon = intersection.multiPolygonIntersectsMultiPolygon;
++var multiPolygonIntersectsBufferedMultiLine = intersection.multiPolygonIntersectsBufferedMultiLine;
+ 
+-function StyleDeclaration(reference, value) {
+-    this.type = reference.type;
+-    this.transitionable = reference.transition;
+-    this.value = util.clone(value);
+-    this.isFunction = !!value.stops;
+ 
+-    // immutable representation of value. used for comparison
+-    this.json = JSON.stringify(this.value);
++var FeatureIndexArray = new StructArrayType({
++    members: [
++        // the index of the feature in the original vectortile
++        { type: 'Uint32', name: 'featureIndex' },
++        // the source layer the feature appears in
++        { type: 'Uint16', name: 'sourceLayerIndex' },
++        // the bucket the feature appears in
++        { type: 'Uint16', name: 'bucketIndex' }
++    ]});
+ 
+-    var parsedValue = this.type === 'color' ? parseColor(this.value) : value;
+-    this.calculate = MapboxGLFunction[reference.function || 'piecewise-constant'](parsedValue);
+-    this.isFeatureConstant = this.calculate.isFeatureConstant;
+-    this.isZoomConstant = this.calculate.isZoomConstant;
++module.exports = FeatureIndex;
+ 
+-    if (reference.function === 'piecewise-constant' && reference.transition) {
+-        this.calculate = transitioned(this.calculate);
++function FeatureIndex(coord, overscaling, collisionTile) {
++    if (coord.grid) {
++        var serialized = coord;
++        var rawTileData = overscaling;
++        coord = serialized.coord;
++        overscaling = serialized.overscaling;
++        this.grid = new Grid(serialized.grid);
++        this.featureIndexArray = new FeatureIndexArray(serialized.featureIndexArray);
++        this.rawTileData = rawTileData;
++        this.bucketLayerIDs = serialized.bucketLayerIDs;
++    } else {
++        this.grid = new Grid(EXTENT, 16, 0);
++        this.featureIndexArray = new FeatureIndexArray();
+     }
++    this.coord = coord;
++    this.overscaling = overscaling;
++    this.x = coord.x;
++    this.y = coord.y;
++    this.z = coord.z - Math.log(overscaling) / Math.LN2;
++    this.setCollisionTile(collisionTile);
++}
+ 
+-    if (!this.isFeatureConstant && !this.isZoomConstant) {
+-        this.stopZoomLevels = [];
+-        var interpolationAmountStops = [];
+-        var stops = this.value.stops;
+-        for (var i = 0; i < this.value.stops.length; i++) {
+-            var zoom = stops[i][0].zoom;
+-            if (this.stopZoomLevels.indexOf(zoom) < 0) {
+-                this.stopZoomLevels.push(zoom);
+-                interpolationAmountStops.push([zoom, interpolationAmountStops.length]);
+-            }
++FeatureIndex.prototype.insert = function(feature, featureIndex, sourceLayerIndex, bucketIndex) {
++    var key = this.featureIndexArray.length;
++    this.featureIndexArray.emplaceBack(featureIndex, sourceLayerIndex, bucketIndex);
++    var geometry = loadGeometry(feature);
++
++    for (var r = 0; r < geometry.length; r++) {
++        var ring = geometry[r];
++
++        // TODO: skip holes when we start using vector tile spec 2.0
++
++        var bbox = [Infinity, Infinity, -Infinity, -Infinity];
++        for (var i = 0; i < ring.length; i++) {
++            var p = ring[i];
++            bbox[0] = Math.min(bbox[0], p.x);
++            bbox[1] = Math.min(bbox[1], p.y);
++            bbox[2] = Math.max(bbox[2], p.x);
++            bbox[3] = Math.max(bbox[3], p.y);
+         }
+ 
+-        this.calculateInterpolationT = MapboxGLFunction.interpolated({
+-            stops: interpolationAmountStops,
+-            base: value.base
+-        });
++        this.grid.insert(key, bbox[0], bbox[1], bbox[2], bbox[3]);
+     }
++};
++
++FeatureIndex.prototype.setCollisionTile = function(collisionTile) {
++    this.collisionTile = collisionTile;
++};
++
++FeatureIndex.prototype.serialize = function() {
++    var data = {
++        coord: this.coord,
++        overscaling: this.overscaling,
++        grid: this.grid.toArrayBuffer(),
++        featureIndexArray: this.featureIndexArray.serialize(),
++        bucketLayerIDs: this.bucketLayerIDs
++    };
++    return {
++        data: data,
++        transferables: [data.grid, data.featureIndexArray.arrayBuffer]
++    };
++};
++
++function translateDistance(translate) {
++    return Math.sqrt(translate[0] * translate[0] + translate[1] * translate[1]);
+ }
+ 
+-function transitioned(calculate) {
+-    return function(globalProperties, featureProperties) {
+-        var z = globalProperties.zoom;
+-        var zh = globalProperties.zoomHistory;
+-        var duration = globalProperties.duration;
++// Finds features in this tile at a particular position.
++FeatureIndex.prototype.query = function(args, styleLayers) {
++    if (!this.vtLayers) {
++        this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
++        this.sourceLayerCoder = new DictionaryCoder(this.vtLayers ? Object.keys(this.vtLayers).sort() : ['_geojsonTileLayer']);
++    }
+ 
+-        var fraction = z % 1;
+-        var t = Math.min((Date.now() - zh.lastIntegerZoomTime) / duration, 1);
+-        var fromScale = 1;
+-        var toScale = 1;
+-        var mix, from, to;
++    var result = {};
+ 
+-        if (z > zh.lastIntegerZoom) {
+-            mix = fraction + (1 - fraction) * t;
+-            fromScale *= 2;
+-            from = calculate({zoom: z - 1}, featureProperties);
+-            to = calculate({zoom: z}, featureProperties);
+-        } else {
+-            mix = 1 - (1 - t) * fraction;
+-            to = calculate({zoom: z}, featureProperties);
+-            from = calculate({zoom: z + 1}, featureProperties);
+-            fromScale /= 2;
++    var params = args.params || {},
++        pixelsToTileUnits = EXTENT / args.tileSize / args.scale,
++        filter = featureFilter(params.filter);
++
++    // Features are indexed their original geometries. The rendered geometries may
++    // be buffered, translated or offset. Figure out how much the search radius needs to be
++    // expanded by to include these features.
++    var additionalRadius = 0;
++    for (var id in styleLayers) {
++        var styleLayer = styleLayers[id];
++        var paint = styleLayer.paint;
++
++        var styleLayerDistance = 0;
++        if (styleLayer.type === 'line') {
++            styleLayerDistance = getLineWidth(paint) / 2 + Math.abs(paint['line-offset']) + translateDistance(paint['line-translate']);
++        } else if (styleLayer.type === 'fill') {
++            styleLayerDistance = translateDistance(paint['fill-translate']);
++        } else if (styleLayer.type === 'circle') {
++            styleLayerDistance = paint['circle-radius'] + translateDistance(paint['circle-translate']);
+         }
++        additionalRadius = Math.max(additionalRadius, styleLayerDistance * pixelsToTileUnits);
++    }
+ 
+-        return {
+-            from: from,
+-            fromScale: fromScale,
+-            to: to,
+-            toScale: toScale,
+-            t: mix
+-        };
+-    };
+-}
++    var queryGeometry = args.queryGeometry.map(function(q) {
++        return q.map(function(p) {
++            return new Point(p.x, p.y);
++        });
++    });
+ 
+-},{"../util/util":349,"./parse_color":289,"./style_function":292}],292:[function(require,module,exports){
+-'use strict';
++    var minX = Infinity;
++    var minY = Infinity;
++    var maxX = -Infinity;
++    var maxY = -Infinity;
++    for (var i = 0; i < queryGeometry.length; i++) {
++        var ring = queryGeometry[i];
++        for (var k = 0; k < ring.length; k++) {
++            var p = ring[k];
++            minX = Math.min(minX, p.x);
++            minY = Math.min(minY, p.y);
++            maxX = Math.max(maxX, p.x);
++            maxY = Math.max(maxY, p.y);
++        }
++    }
+ 
+-var MapboxGLFunction = require('mapbox-gl-function');
++    var matching = this.grid.query(minX - additionalRadius, minY - additionalRadius, maxX + additionalRadius, maxY + additionalRadius);
++    matching.sort(topDownFeatureComparator);
++    this.filterMatching(result, matching, this.featureIndexArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+ 
+-exports.interpolated = function(parameters) {
+-    var inner = MapboxGLFunction.interpolated(parameters);
+-    var outer = function(globalProperties, featureProperties) {
+-        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
+-    };
+-    outer.isFeatureConstant = inner.isFeatureConstant;
+-    outer.isZoomConstant = inner.isZoomConstant;
+-    return outer;
+-};
++    var matchingSymbols = this.collisionTile.queryRenderedSymbols(minX, minY, maxX, maxY, args.scale);
++    matchingSymbols.sort();
++    this.filterMatching(result, matchingSymbols, this.collisionTile.collisionBoxArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);
+ 
+-exports['piecewise-constant'] = function(parameters) {
+-    var inner = MapboxGLFunction['piecewise-constant'](parameters);
+-    var outer = function(globalProperties, featureProperties) {
+-        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
+-    };
+-    outer.isFeatureConstant = inner.isFeatureConstant;
+-    outer.isZoomConstant = inner.isZoomConstant;
+-    return outer;
++    return result;
+ };
+ 
+-exports.isFunctionDefinition = MapboxGLFunction.isFunctionDefinition;
++function topDownFeatureComparator(a, b) {
++    return b - a;
++}
+ 
+-},{"mapbox-gl-function":374}],293:[function(require,module,exports){
+-'use strict';
++function getLineWidth(paint) {
++    if (paint['line-gap-width'] > 0) {
++        return paint['line-gap-width'] + 2 * paint['line-width'];
++    } else {
++        return paint['line-width'];
++    }
++}
+ 
+-var util = require('../util/util');
+-var StyleTransition = require('./style_transition');
+-var StyleDeclaration = require('./style_declaration');
+-var styleSpec = require('./style_spec');
+-var validateStyle = require('./validate_style');
+-var parseColor = require('./parse_color');
+-var Evented = require('../util/evented');
++FeatureIndex.prototype.filterMatching = function(result, matching, array, queryGeometry, filter, filterLayerIDs, styleLayers, bearing, pixelsToTileUnits) {
++    var previousIndex;
++    for (var k = 0; k < matching.length; k++) {
++        var index = matching[k];
++
++        // don't check the same feature more than once
++        if (index === previousIndex) continue;
++        previousIndex = index;
++
++        var match = array.get(index);
+ 
+-module.exports = StyleLayer;
++        var layerIDs = this.bucketLayerIDs[match.bucketIndex];
++        if (filterLayerIDs && !arraysIntersect(filterLayerIDs, layerIDs)) continue;
+ 
+-var TRANSITION_SUFFIX = '-transition';
++        var sourceLayerName = this.sourceLayerCoder.decode(match.sourceLayerIndex);
++        var sourceLayer = this.vtLayers[sourceLayerName];
++        var feature = sourceLayer.feature(match.featureIndex);
+ 
+-StyleLayer.create = function(layer, refLayer) {
+-    var Classes = {
+-        background: require('./style_layer/background_style_layer'),
+-        circle: require('./style_layer/circle_style_layer'),
+-        fill: require('./style_layer/fill_style_layer'),
+-        line: require('./style_layer/line_style_layer'),
+-        raster: require('./style_layer/raster_style_layer'),
+-        symbol: require('./style_layer/symbol_style_layer')
+-    };
+-    return new Classes[(refLayer || layer).type](layer, refLayer);
+-};
++        if (!filter(feature)) continue;
+ 
+-function StyleLayer(layer, refLayer) {
+-    this.set(layer, refLayer);
+-}
++        var geometry = null;
+ 
+-StyleLayer.prototype = util.inherit(Evented, {
++        for (var l = 0; l < layerIDs.length; l++) {
++            var layerID = layerIDs[l];
+ 
+-    set: function(layer, refLayer) {
+-        this.id = layer.id;
+-        this.ref = layer.ref;
+-        this.metadata = layer.metadata;
+-        this.type = (refLayer || layer).type;
+-        this.source = (refLayer || layer).source;
+-        this.sourceLayer = (refLayer || layer)['source-layer'];
+-        this.minzoom = (refLayer || layer).minzoom;
+-        this.maxzoom = (refLayer || layer).maxzoom;
+-        this.filter = (refLayer || layer).filter;
++            if (filterLayerIDs && filterLayerIDs.indexOf(layerID) < 0) {
++                continue;
++            }
+ 
+-        this.paint = {};
+-        this.layout = {};
++            var styleLayer = styleLayers[layerID];
++            if (!styleLayer) continue;
+ 
+-        this._paintSpecifications = styleSpec['paint_' + this.type];
+-        this._layoutSpecifications = styleSpec['layout_' + this.type];
++            var translatedPolygon;
++            if (styleLayer.type !== 'symbol') {
++                // all symbols already match the style
+ 
+-        this._paintTransitions = {}; // {[propertyName]: StyleTransition}
+-        this._paintTransitionOptions = {}; // {[className]: {[propertyName]: { duration:Number, delay:Number }}}
+-        this._paintDeclarations = {}; // {[className]: {[propertyName]: StyleDeclaration}}
+-        this._layoutDeclarations = {}; // {[propertyName]: StyleDeclaration}
+-        this._layoutFunctions = {}; // {[propertyName]: Boolean}
++                if (!geometry) geometry = loadGeometry(feature);
+ 
+-        var paintName, layoutName;
++                var paint = styleLayer.paint;
+ 
+-        // Resolve paint declarations
+-        for (var key in layer) {
+-            var match = key.match(/^paint(?:\.(.*))?$/);
+-            if (match) {
+-                var klass = match[1] || '';
+-                for (paintName in layer[key]) {
+-                    this.setPaintProperty(paintName, layer[key][paintName], klass);
++                if (styleLayer.type === 'line') {
++                    translatedPolygon = translate(queryGeometry,
++                            paint['line-translate'], paint['line-translate-anchor'],
++                            bearing, pixelsToTileUnits);
++                    var halfWidth = getLineWidth(paint) / 2 * pixelsToTileUnits;
++                    if (paint['line-offset']) {
++                        geometry = offsetLine(geometry, paint['line-offset'] * pixelsToTileUnits);
++                    }
++                    if (!multiPolygonIntersectsBufferedMultiLine(translatedPolygon, geometry, halfWidth)) continue;
++
++                } else if (styleLayer.type === 'fill') {
++                    translatedPolygon = translate(queryGeometry,
++                            paint['fill-translate'], paint['fill-translate-anchor'],
++                            bearing, pixelsToTileUnits);
++                    if (!multiPolygonIntersectsMultiPolygon(translatedPolygon, geometry)) continue;
++
++                } else if (styleLayer.type === 'circle') {
++                    translatedPolygon = translate(queryGeometry,
++                            paint['circle-translate'], paint['circle-translate-anchor'],
++                            bearing, pixelsToTileUnits);
++                    var circleRadius = paint['circle-radius'] * pixelsToTileUnits;
++                    if (!multiPolygonIntersectsBufferedMultiPoint(translatedPolygon, geometry, circleRadius)) continue;
+                 }
+             }
+-        }
+ 
+-        // Resolve layout declarations
+-        if (this.ref) {
+-            this._layoutDeclarations = refLayer._layoutDeclarations;
+-        } else {
+-            for (layoutName in layer.layout) {
+-                this.setLayoutProperty(layoutName, layer.layout[layoutName]);
++            var geojsonFeature = new GeoJSONFeature(feature, this.z, this.x, this.y);
++            geojsonFeature.layer = styleLayer.serialize({
++                includeRefProperties: true
++            });
++            var layerResult = result[layerID];
++            if (layerResult === undefined) {
++                layerResult = result[layerID] = [];
+             }
++            layerResult.push(geojsonFeature);
+         }
++    }
++};
+ 
+-        // set initial layout/paint values
+-        for (paintName in this._paintSpecifications) {
+-            this.paint[paintName] = this.getPaintValue(paintName);
+-        }
+-        for (layoutName in this._layoutSpecifications) {
+-            this._updateLayoutValue(layoutName);
+-        }
+-    },
++function translate(queryGeometry, translate, translateAnchor, bearing, pixelsToTileUnits) {
++    if (!translate[0] && !translate[1]) {
++        return queryGeometry;
++    }
+ 
+-    setLayoutProperty: function(name, value) {
++    translate = Point.convert(translate);
+ 
+-        if (value == null) {
+-            delete this._layoutDeclarations[name];
+-        } else {
+-            var key = 'layers.' + this.id + '.layout.' + name;
+-            if (this._handleErrors(validateStyle.layoutProperty, key, name, value)) return;
+-            this._layoutDeclarations[name] = new StyleDeclaration(this._layoutSpecifications[name], value);
++    if (translateAnchor === "viewport") {
++        translate._rotate(-bearing);
++    }
++
++    var translated = [];
++    for (var i = 0; i < queryGeometry.length; i++) {
++        var ring = queryGeometry[i];
++        var translatedRing = [];
++        for (var k = 0; k < ring.length; k++) {
++            translatedRing.push(ring[k].sub(translate._mult(pixelsToTileUnits)));
+         }
+-        this._updateLayoutValue(name);
+-    },
++        translated.push(translatedRing);
++    }
++    return translated;
++}
+ 
+-    getLayoutProperty: function(name) {
+-        return (
+-            this._layoutDeclarations[name] &&
+-            this._layoutDeclarations[name].value
+-        );
+-    },
++function offsetLine(rings, offset) {
++    var newRings = [];
++    var zero = new Point(0, 0);
++    for (var k = 0; k < rings.length; k++) {
++        var ring = rings[k];
++        var newRing = [];
++        for (var i = 0; i < ring.length; i++) {
++            var a = ring[i - 1];
++            var b = ring[i];
++            var c = ring[i + 1];
++            var aToB = i === 0 ? zero : b.sub(a)._unit()._perp();
++            var bToC = i === ring.length - 1 ? zero : c.sub(b)._unit()._perp();
++            var extrude = aToB._add(bToC)._unit();
+ 
+-    getLayoutValue: function(name, globalProperties, featureProperties) {
+-        var specification = this._layoutSpecifications[name];
+-        var declaration = this._layoutDeclarations[name];
++            var cosHalfAngle = extrude.x * bToC.x + extrude.y * bToC.y;
++            extrude._mult(1 / cosHalfAngle);
+ 
+-        if (declaration) {
+-            return declaration.calculate(globalProperties, featureProperties);
+-        } else {
+-            return specification.default;
++            newRing.push(extrude._mult(offset)._add(b));
+         }
+-    },
++        newRings.push(newRing);
++    }
++    return newRings;
++}
+ 
+-    setPaintProperty: function(name, value, klass) {
+-        var validateStyleKey = 'layers.' + this.id + (klass ? '["paint.' + klass + '"].' : '.paint.') + name;
++},{"../util/dictionary_coder":353,"../util/intersection_tests":357,"../util/struct_array":360,"../util/util":362,"../util/vectortile_to_geojson":363,"./bucket":260,"./load_geometry":267,"feature-filter":99,"grid-index":222,"pbf":394,"point-geometry":400,"vector-tile":456}],267:[function(require,module,exports){
++'use strict';
+ 
+-        if (util.endsWith(name, TRANSITION_SUFFIX)) {
+-            if (!this._paintTransitionOptions[klass || '']) {
+-                this._paintTransitionOptions[klass || ''] = {};
+-            }
+-            if (value === null || value === undefined) {
+-                delete this._paintTransitionOptions[klass || ''][name];
+-            } else {
+-                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
+-                this._paintTransitionOptions[klass || ''][name] = value;
+-            }
+-        } else {
+-            if (!this._paintDeclarations[klass || '']) {
+-                this._paintDeclarations[klass || ''] = {};
+-            }
+-            if (value === null || value === undefined) {
+-                delete this._paintDeclarations[klass || ''][name];
+-            } else {
+-                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
+-                this._paintDeclarations[klass || ''][name] = new StyleDeclaration(this._paintSpecifications[name], value);
++var EXTENT = require('./bucket').EXTENT;
++var EXTENT_MIN = EXTENT * -2;
++var EXTENT_MAX = (EXTENT * 2) - 1;
++
++// only log a geometry warning once per context
++var warned = false;
++
++/**
++ * Loads a geometry from a VectorTileFeature and scales it to the common extent
++ * used internally.
++ * @private
++ */
++module.exports = function loadGeometry(feature) {
++    var scale = EXTENT / feature.extent;
++    var geometry = feature.loadGeometry();
++    for (var r = 0; r < geometry.length; r++) {
++        var ring = geometry[r];
++        for (var p = 0; p < ring.length; p++) {
++            var point = ring[p];
++            // round here because mapbox-gl-native uses integers to represent
++            // points and we need to do the same to avoid renering differences.
++            point.x = Math.round(point.x * scale);
++            point.y = Math.round(point.y * scale);
++            if (warned === false && (
++                point.x < EXTENT_MIN ||
++                point.x > EXTENT_MAX ||
++                point.y < EXTENT_MIN ||
++                point.y > EXTENT_MAX)) {
++                console.warn('Geometry exceeds allowed extent, reduce your vector tile buffer size');
++                warned = true;
+             }
+         }
+-    },
++    }
++    return geometry;
++};
+ 
+-    getPaintProperty: function(name, klass) {
+-        klass = klass || '';
+-        if (util.endsWith(name, TRANSITION_SUFFIX)) {
+-            return (
+-                this._paintTransitionOptions[klass] &&
+-                this._paintTransitionOptions[klass][name]
+-            );
+-        } else {
+-            return (
+-                this._paintDeclarations[klass] &&
+-                this._paintDeclarations[klass][name] &&
+-                this._paintDeclarations[klass][name].value
+-            );
+-        }
+-    },
++},{"./bucket":260}],268:[function(require,module,exports){
++'use strict';
+ 
+-    getPaintValue: function(name, globalProperties, featureProperties) {
+-        var specification = this._paintSpecifications[name];
+-        var transition = this._paintTransitions[name];
++module.exports = Coordinate;
+ 
+-        if (transition) {
+-            return transition.calculate(globalProperties, featureProperties);
+-        } else if (specification.type === 'color' && specification.default) {
+-            return parseColor(specification.default);
+-        } else {
+-            return specification.default;
+-        }
+-    },
++/**
++ * A coordinate is a column, row, zoom combination, often used
++ * as the data component of a tile.
++ *
++ * @param {number} column
++ * @param {number} row
++ * @param {number} zoom
++ * @private
++ */
++function Coordinate(column, row, zoom) {
++    this.column = column;
++    this.row = row;
++    this.zoom = zoom;
++}
+ 
+-    getPaintValueStopZoomLevels: function(name) {
+-        var transition = this._paintTransitions[name];
+-        if (transition) {
+-            return transition.declaration.stopZoomLevels;
+-        } else {
+-            return [];
+-        }
+-    },
++Coordinate.prototype = {
+ 
+-    getPaintInterpolationT: function(name, zoom) {
+-        var transition = this._paintTransitions[name];
+-        return transition.declaration.calculateInterpolationT({ zoom: zoom });
++    /**
++     * Create a clone of this coordinate that can be mutated without
++     * changing the original coordinate
++     *
++     * @returns {Coordinate} clone
++     * @private
++     * var coord = new Coordinate(0, 0, 0);
++     * var c2 = coord.clone();
++     * // since coord is cloned, modifying a property of c2 does
++     * // not modify it.
++     * c2.zoom = 2;
++     */
++    clone: function() {
++        return new Coordinate(this.column, this.row, this.zoom);
+     },
+ 
+-    isPaintValueFeatureConstant: function(name) {
+-        var transition = this._paintTransitions[name];
++    /**
++     * Zoom this coordinate to a given zoom level. This returns a new
++     * coordinate object, not mutating the old one.
++     *
++     * @param {number} zoom
++     * @returns {Coordinate} zoomed coordinate
++     * @private
++     * @example
++     * var coord = new Coordinate(0, 0, 0);
++     * var c2 = coord.zoomTo(1);
++     * c2 // equals new Coordinate(0, 0, 1);
++     */
++    zoomTo: function(zoom) { return this.clone()._zoomTo(zoom); },
+ 
+-        if (transition) {
+-            return transition.declaration.isFeatureConstant;
+-        } else {
+-            return true;
+-        }
++    /**
++     * Subtract the column and row values of this coordinate from those
++     * of another coordinate. The other coordinat will be zoomed to the
++     * same level as `this` before the subtraction occurs
++     *
++     * @param {Coordinate} c other coordinate
++     * @returns {Coordinate} result
++     * @private
++     */
++    sub: function(c) { return this.clone()._sub(c); },
++
++    _zoomTo: function(zoom) {
++        var scale = Math.pow(2, zoom - this.zoom);
++        this.column *= scale;
++        this.row *= scale;
++        this.zoom = zoom;
++        return this;
+     },
+ 
+-    isPaintValueZoomConstant: function(name) {
+-        var transition = this._paintTransitions[name];
++    _sub: function(c) {
++        c = c.zoomTo(this.zoom);
++        this.column -= c.column;
++        this.row -= c.row;
++        return this;
++    }
++};
+ 
+-        if (transition) {
+-            return transition.declaration.isZoomConstant;
+-        } else {
+-            return true;
+-        }
+-    },
++},{}],269:[function(require,module,exports){
++'use strict';
+ 
++module.exports = LngLat;
+ 
+-    isHidden: function(zoom) {
+-        if (this.minzoom && zoom < this.minzoom) return true;
+-        if (this.maxzoom && zoom >= this.maxzoom) return true;
+-        if (this.layout['visibility'] === 'none') return true;
+-        if (this.paint[this.type + '-opacity'] === 0) return true;
+-        return false;
+-    },
++var wrap = require('../util/util').wrap;
+ 
+-    updatePaintTransitions: function(classes, options, globalOptions, animationLoop) {
+-        var declarations = util.extend({}, this._paintDeclarations['']);
+-        for (var i = 0; i < classes.length; i++) {
+-            util.extend(declarations, this._paintDeclarations[classes[i]]);
+-        }
++/**
++ * Create a longitude, latitude object from a given longitude and latitude pair in degrees.
++ * Mapbox GL uses Longitude, Latitude coordinate order to match GeoJSON.
++ *
++ * Note that any Mapbox GL method that accepts a `LngLat` object can also accept an
++ * `Array` and will perform an implicit conversion.  The following lines are equivalent:
++ ```
++ map.setCenter([-73.9749, 40.7736]);
++ map.setCenter( new mapboxgl.LngLat(-73.9749, 40.7736) );
++ ```
++ *
++ * @class LngLat
++ * @classdesc A representation of a longitude, latitude point, in degrees.
++ * @param {number} lng longitude
++ * @param {number} lat latitude
++ * @example
++ * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
++ */
++function LngLat(lng, lat) {
++    if (isNaN(lng) || isNaN(lat)) {
++        throw new Error('Invalid LngLat object: (' + lng + ', ' + lat + ')');
++    }
++    this.lng = +lng;
++    this.lat = +lat;
++    if (this.lat > 90 || this.lat < -90) {
++        throw new Error('Invalid LngLat latitude value: must be between -90 and 90');
++    }
++}
+ 
+-        var name;
+-        for (name in declarations) { // apply new declarations
+-            this._applyPaintDeclaration(name, declarations[name], options, globalOptions, animationLoop);
+-        }
+-        for (name in this._paintTransitions) {
+-            if (!(name in declarations)) // apply removed declarations
+-                this._applyPaintDeclaration(name, null, options, globalOptions, animationLoop);
+-        }
+-    },
++/**
++ * Return a new `LngLat` object whose longitude is wrapped to the range (-180, 180).
++ *
++ * @returns {LngLat} wrapped LngLat object
++ * @example
++ * var ll = new mapboxgl.LngLat(286.0251, 40.7736);
++ * var wrapped = ll.wrap();
++ * wrapped.lng; // = -73.9749
++ */
++LngLat.prototype.wrap = function () {
++    return new LngLat(wrap(this.lng, -180, 180), this.lat);
++};
+ 
+-    updatePaintTransition: function(name, classes, options, globalOptions, animationLoop) {
+-        var declaration = this._paintDeclarations[''][name];
+-        for (var i = 0; i < classes.length; i++) {
+-            var classPaintDeclarations = this._paintDeclarations[classes[i]];
+-            if (classPaintDeclarations && classPaintDeclarations[name]) {
+-                declaration = classPaintDeclarations[name];
+-            }
+-        }
+-        this._applyPaintDeclaration(name, declaration, options, globalOptions, animationLoop);
+-    },
++/**
++ * Return a `LngLat` as an array
++ *
++ * @returns {array} [lng, lat]
++ * @example
++ * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
++ * ll.toArray(); // = [-73.9749, 40.7736]
++ */
++LngLat.prototype.toArray = function () {
++    return [this.lng, this.lat];
++};
+ 
+-    // update all zoom-dependent layout/paint values
+-    recalculate: function(zoom, zoomHistory) {
+-        for (var paintName in this._paintTransitions) {
+-            this.paint[paintName] = this.getPaintValue(paintName, {zoom: zoom, zoomHistory: zoomHistory});
+-        }
+-        for (var layoutName in this._layoutFunctions) {
+-            this.layout[layoutName] = this.getLayoutValue(layoutName, {zoom: zoom, zoomHistory: zoomHistory});
+-        }
+-    },
++/**
++ * Return a `LngLat` as a string
++ *
++ * @returns {string} "LngLat(lng, lat)"
++ * @example
++ * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
++ * ll.toString(); // = "LngLat(-73.9749, 40.7736)"
++ */
++LngLat.prototype.toString = function () {
++    return 'LngLat(' + this.lng + ', ' + this.lat + ')';
++};
+ 
+-    serialize: function(options) {
+-        var output = {
+-            'id': this.id,
+-            'ref': this.ref,
+-            'metadata': this.metadata,
+-            'minzoom': this.minzoom,
+-            'maxzoom': this.maxzoom
+-        };
++/**
++ * Convert an array to a `LngLat` object, or return an existing `LngLat` object
++ * unchanged.
++ *
++ * @param {Array<number>|LngLat} input `input` to convert
++ * @returns {LngLat} LngLat object or original input
++ * @example
++ * var arr = [-73.9749, 40.7736];
++ * var ll = mapboxgl.LngLat.convert(arr);
++ * ll;   // = LngLat {lng: -73.9749, lat: 40.7736}
++ */
++LngLat.convert = function (input) {
++    if (input instanceof LngLat) {
++        return input;
++    }
++    if (Array.isArray(input)) {
++        return new LngLat(input[0], input[1]);
++    }
++    return input;
++};
+ 
+-        for (var klass in this._paintDeclarations) {
+-            var key = klass === '' ? 'paint' : 'paint.' + klass;
+-            output[key] = util.mapObject(this._paintDeclarations[klass], getDeclarationValue);
+-        }
++},{"../util/util":362}],270:[function(require,module,exports){
++'use strict';
+ 
+-        if (!this.ref || (options && options.includeRefProperties)) {
+-            util.extend(output, {
+-                'type': this.type,
+-                'source': this.source,
+-                'source-layer': this.sourceLayer,
+-                'filter': this.filter,
+-                'layout': util.mapObject(this._layoutDeclarations, getDeclarationValue)
+-            });
+-        }
++module.exports = LngLatBounds;
+ 
+-        return util.filterObject(output, function(value, key) {
+-            return value !== undefined && !(key === 'layout' && !Object.keys(value).length);
+-        });
+-    },
++var LngLat = require('./lng_lat');
++
++/**
++ * Creates a bounding box from the given pair of points. If parameteres are omitted, a `null` bounding box is created.
++ *
++ * @class LngLatBounds
++ * @classdesc A representation of rectangular box on the earth, defined by its southwest and northeast points in longitude and latitude.
++ * @param {LngLat} sw southwest
++ * @param {LngLat} ne northeast
++ * @example
++ * var sw = new mapboxgl.LngLat(-73.9876, 40.7661);
++ * var ne = new mapboxgl.LngLat(-73.9397, 40.8002);
++ * var llb = new mapboxgl.LngLatBounds(sw, ne);
++ */
++function LngLatBounds(sw, ne) {
++    if (!sw) {
++        return;
++    } else if (ne) {
++        this.extend(sw).extend(ne);
++    } else if (sw.length === 4) {
++        this.extend([sw[0], sw[1]]).extend([sw[2], sw[3]]);
++    } else {
++        this.extend(sw[0]).extend(sw[1]);
++    }
++}
+ 
+-    // set paint transition based on a given paint declaration
+-    _applyPaintDeclaration: function (name, declaration, options, globalOptions, animationLoop) {
+-        var oldTransition = options.transition ? this._paintTransitions[name] : undefined;
++LngLatBounds.prototype = {
+ 
+-        if (declaration === null || declaration === undefined) {
+-            var spec = this._paintSpecifications[name];
+-            declaration = new StyleDeclaration(spec, spec.default);
+-        }
++    /**
++     * Extend the bounds to include a given LngLat or LngLatBounds.
++     *
++     * @param {LngLat|LngLatBounds} obj object to extend to
++     * @returns {LngLatBounds} `this`
++     */
++    extend: function(obj) {
++        var sw = this._sw,
++            ne = this._ne,
++            sw2, ne2;
+ 
+-        if (oldTransition && oldTransition.declaration.json === declaration.json) return;
++        if (obj instanceof LngLat) {
++            sw2 = obj;
++            ne2 = obj;
+ 
+-        var transitionOptions = util.extend({
+-            duration: 300,
+-            delay: 0
+-        }, globalOptions, this.getPaintProperty(name + TRANSITION_SUFFIX));
++        } else if (obj instanceof LngLatBounds) {
++            sw2 = obj._sw;
++            ne2 = obj._ne;
+ 
+-        var newTransition = this._paintTransitions[name] =
+-                new StyleTransition(declaration, oldTransition, transitionOptions);
++            if (!sw2 || !ne2) return this;
+ 
+-        if (!newTransition.instant()) {
+-            newTransition.loopID = animationLoop.set(newTransition.endTime - Date.now());
+-        }
+-        if (oldTransition) {
+-            animationLoop.cancel(oldTransition.loopID);
++        } else {
++            return obj ? this.extend(LngLat.convert(obj) || LngLatBounds.convert(obj)) : this;
+         }
+-    },
+ 
+-    // update layout value if it's constant, or mark it as zoom-dependent
+-    _updateLayoutValue: function(name) {
+-        var declaration = this._layoutDeclarations[name];
++        if (!sw && !ne) {
++            this._sw = new LngLat(sw2.lng, sw2.lat);
++            this._ne = new LngLat(ne2.lng, ne2.lat);
+ 
+-        if (declaration && declaration.isFunction) {
+-            this._layoutFunctions[name] = true;
+         } else {
+-            delete this._layoutFunctions[name];
+-            this.layout[name] = this.getLayoutValue(name);
++            sw.lng = Math.min(sw2.lng, sw.lng);
++            sw.lat = Math.min(sw2.lat, sw.lat);
++            ne.lng = Math.max(ne2.lng, ne.lng);
++            ne.lat = Math.max(ne2.lat, ne.lat);
+         }
++
++        return this;
+     },
+ 
+-    _handleErrors: function(validate, key, name, value) {
+-        return validateStyle.emitErrors(this, validate.call(validateStyle, {
+-            key: key,
+-            layerType: this.type,
+-            objectKey: name,
+-            value: value,
+-            styleSpec: styleSpec,
+-            // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407
+-            style: {glyphs: true, sprite: true}
+-        }));
+-    }
+-});
++    /**
++     * Get the point equidistant from this box's corners
++     * @returns {LngLat} centerpoint
++     * @example
++     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
++     * llb.getCenter(); // = LngLat {lng: -73.96365, lat: 40.78315}
++     */
++    getCenter: function() {
++        return new LngLat((this._sw.lng + this._ne.lng) / 2, (this._sw.lat + this._ne.lat) / 2);
++    },
+ 
+-function getDeclarationValue(declaration) {
+-    return declaration.value;
+-}
++    /**
++     * Get southwest corner
++     * @returns {LngLat} southwest
++     */
++    getSouthWest: function() { return this._sw; },
+ 
+-},{"../util/evented":341,"../util/util":349,"./parse_color":289,"./style_declaration":291,"./style_layer/background_style_layer":294,"./style_layer/circle_style_layer":295,"./style_layer/fill_style_layer":296,"./style_layer/line_style_layer":297,"./style_layer/raster_style_layer":298,"./style_layer/symbol_style_layer":299,"./style_spec":300,"./style_transition":301,"./validate_style":302}],294:[function(require,module,exports){
+-'use strict';
++    /**
++     * Get northeast corner
++     * @returns {LngLat} northeast
++     */
++    getNorthEast: function() { return this._ne; },
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++    /**
++     * Get northwest corner
++     * @returns {LngLat} northwest
++     */
++    getNorthWest: function() { return new LngLat(this.getWest(), this.getNorth()); },
+ 
+-function BackgroundStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++    /**
++     * Get southeast corner
++     * @returns {LngLat} southeast
++     */
++    getSouthEast: function() { return new LngLat(this.getEast(), this.getSouth()); },
+ 
+-module.exports = BackgroundStyleLayer;
++    /**
++     * Get west edge longitude
++     * @returns {number} west
++     */
++    getWest:  function() { return this._sw.lng; },
+ 
+-BackgroundStyleLayer.prototype = util.inherit(StyleLayer, {});
++    /**
++     * Get south edge latitude
++     * @returns {number} south
++     */
++    getSouth: function() { return this._sw.lat; },
+ 
+-},{"../../util/util":349,"../style_layer":293}],295:[function(require,module,exports){
+-'use strict';
++    /**
++     * Get east edge longitude
++     * @returns {number} east
++     */
++    getEast:  function() { return this._ne.lng; },
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++    /**
++     * Get north edge latitude
++     * @returns {number} north
++     */
++    getNorth: function() { return this._ne.lat; },
+ 
+-function CircleStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++    /**
++     * Return a `LngLatBounds` as an array
++     *
++     * @returns {array} [lng, lat]
++     * @example
++     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
++     * llb.toArray(); // = [[-73.9876, 40.7661], [-73.9397, 40.8002]]
++     */
++    toArray: function () {
++        return [this._sw.toArray(), this._ne.toArray()];
++    },
+ 
+-module.exports = CircleStyleLayer;
++    /**
++     * Return a `LngLatBounds` as a string
++     *
++     * @returns {string} "LngLatBounds(LngLat(lng, lat), LngLat(lng, lat))"
++     * @example
++     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
++     * llb.toString(); // = "LngLatBounds(LngLat(-73.9876, 40.7661), LngLat(-73.9397, 40.8002))"
++     */
++    toString: function () {
++        return 'LngLatBounds(' + this._sw.toString() + ', ' + this._ne.toString() + ')';
++    }
++};
+ 
+-CircleStyleLayer.prototype = util.inherit(StyleLayer, {});
++/**
++ * Convert an array to a `LngLatBounds` object, or return an existing
++ * `LngLatBounds` object unchanged.
++ *
++ * Calls `LngLat#convert` internally to convert arrays as `LngLat` values.
++ *
++ * @param {LngLatBounds|Array<number>|Array<Array<number>>} input input to convert to a LngLatBounds
++ * @returns {LngLatBounds} LngLatBounds object or original input
++ * @example
++ * var arr = [[-73.9876, 40.7661], [-73.9397, 40.8002]];
++ * var llb = mapboxgl.LngLatBounds.convert(arr);
++ * llb;   // = LngLatBounds {_sw: LngLat {lng: -73.9876, lat: 40.7661}, _ne: LngLat {lng: -73.9397, lat: 40.8002}}
++ */
++LngLatBounds.convert = function (input) {
++    if (!input || input instanceof LngLatBounds) return input;
++    return new LngLatBounds(input);
++};
+ 
+-},{"../../util/util":349,"../style_layer":293}],296:[function(require,module,exports){
++},{"./lng_lat":269}],271:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++var LngLat = require('./lng_lat'),
++    Point = require('point-geometry'),
++    Coordinate = require('./coordinate'),
++    wrap = require('../util/util').wrap,
++    interp = require('../util/interpolate'),
++    TileCoord = require('../source/tile_coord'),
++    EXTENT = require('../data/bucket').EXTENT,
++    glmatrix = require('gl-matrix');
+ 
+-function FillStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++var vec4 = glmatrix.vec4,
++    mat4 = glmatrix.mat4,
++    mat2 = glmatrix.mat2;
+ 
+-module.exports = FillStyleLayer;
++module.exports = Transform;
+ 
+-FillStyleLayer.prototype = util.inherit(StyleLayer, {});
++/**
++ * A single transform, generally used for a single tile to be
++ * scaled, rotated, and zoomed.
++ *
++ * @param {number} minZoom
++ * @param {number} maxZoom
++ * @private
++ */
++function Transform(minZoom, maxZoom) {
++    this.tileSize = 512; // constant
+ 
+-},{"../../util/util":349,"../style_layer":293}],297:[function(require,module,exports){
+-'use strict';
++    this._minZoom = minZoom || 0;
++    this._maxZoom = maxZoom || 22;
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++    this.latRange = [-85.05113, 85.05113];
+ 
+-function LineStyleLayer() {
+-    StyleLayer.apply(this, arguments);
++    this.width = 0;
++    this.height = 0;
++    this._center = new LngLat(0, 0);
++    this.zoom = 0;
++    this.angle = 0;
++    this._altitude = 1.5;
++    this._pitch = 0;
++    this._unmodified = true;
+ }
+ 
+-module.exports = LineStyleLayer;
+-
+-LineStyleLayer.prototype = util.inherit(StyleLayer, {
+-
+-    getPaintValue: function(name, globalProperties, featureProperties) {
+-        var value = StyleLayer.prototype.getPaintValue.apply(this, arguments);
+-
+-        // If the line is dashed, scale the dash lengths by the line
+-        // width at the previous round zoom level.
+-        if (value && name === 'line-dasharray') {
+-            var flooredZoom = Math.floor(globalProperties.zoom);
+-            if (this._flooredZoom !== flooredZoom) {
+-                this._flooredZoom = flooredZoom;
+-                this._flooredLineWidth = this.getPaintValue('line-width', globalProperties, featureProperties);
+-            }
+-
+-            value.fromScale *= this._flooredLineWidth;
+-            value.toScale *= this._flooredLineWidth;
+-        }
+-
+-        return value;
+-    }
+-});
+-
+-},{"../../util/util":349,"../style_layer":293}],298:[function(require,module,exports){
+-'use strict';
++Transform.prototype = {
++    get minZoom() { return this._minZoom; },
++    set minZoom(zoom) {
++        if (this._minZoom === zoom) return;
++        this._minZoom = zoom;
++        this.zoom = Math.max(this.zoom, zoom);
++    },
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++    get maxZoom() { return this._maxZoom; },
++    set maxZoom(zoom) {
++        if (this._maxZoom === zoom) return;
++        this._maxZoom = zoom;
++        this.zoom = Math.min(this.zoom, zoom);
++    },
+ 
+-function RasterStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++    get worldSize() {
++        return this.tileSize * this.scale;
++    },
+ 
+-module.exports = RasterStyleLayer;
++    get centerPoint() {
++        return this.size._div(2);
++    },
+ 
+-RasterStyleLayer.prototype = util.inherit(StyleLayer, {});
++    get size() {
++        return new Point(this.width, this.height);
++    },
+ 
+-},{"../../util/util":349,"../style_layer":293}],299:[function(require,module,exports){
+-'use strict';
++    get bearing() {
++        return -this.angle / Math.PI * 180;
++    },
++    set bearing(bearing) {
++        var b = -wrap(bearing, -180, 180) * Math.PI / 180;
++        if (this.angle === b) return;
++        this._unmodified = false;
++        this.angle = b;
++        this._calcProjMatrix();
+ 
+-var util = require('../../util/util');
+-var StyleLayer = require('../style_layer');
++        // 2x2 matrix for rotating points
++        this.rotationMatrix = mat2.create();
++        mat2.rotate(this.rotationMatrix, this.rotationMatrix, this.angle);
++    },
+ 
+-function SymbolStyleLayer() {
+-    StyleLayer.apply(this, arguments);
+-}
++    get pitch() {
++        return this._pitch / Math.PI * 180;
++    },
++    set pitch(pitch) {
++        var p = Math.min(60, pitch) / 180 * Math.PI;
++        if (this._pitch === p) return;
++        this._unmodified = false;
++        this._pitch = p;
++        this._calcProjMatrix();
++    },
+ 
+-module.exports = SymbolStyleLayer;
++    get altitude() {
++        return this._altitude;
++    },
++    set altitude(altitude) {
++        var a = Math.max(0.75, altitude);
++        if (this._altitude === a) return;
++        this._unmodified = false;
++        this._altitude = a;
++        this._calcProjMatrix();
++    },
+ 
+-SymbolStyleLayer.prototype = util.inherit(StyleLayer, {
++    get zoom() { return this._zoom; },
++    set zoom(zoom) {
++        var z = Math.min(Math.max(zoom, this.minZoom), this.maxZoom);
++        if (this._zoom === z) return;
++        this._unmodified = false;
++        this._zoom = z;
++        this.scale = this.zoomScale(z);
++        this.tileZoom = Math.floor(z);
++        this.zoomFraction = z - this.tileZoom;
++        this._calcProjMatrix();
++        this._constrain();
++    },
+ 
+-    isHidden: function() {
+-        if (StyleLayer.prototype.isHidden.apply(this, arguments)) return true;
++    get center() { return this._center; },
++    set center(center) {
++        if (center.lat === this._center.lat && center.lng === this._center.lng) return;
++        this._unmodified = false;
++        this._center = center;
++        this._calcProjMatrix();
++        this._constrain();
++    },
+ 
+-        var isTextHidden = this.paint['text-opacity'] === 0 || !this.layout['text-field'];
+-        var isIconHidden = this.paint['icon-opacity'] === 0 || !this.layout['icon-image'];
+-        if (isTextHidden && isIconHidden) return true;
++    resize: function(width, height) {
++        this.width = width;
++        this.height = height;
+ 
+-        return false;
++        this.pixelsToGLUnits = [2 / width, -2 / height];
++        this._calcProjMatrix();
++        this._constrain();
+     },
+ 
+-    getLayoutValue: function(name, globalProperties, featureProperties) {
+-        if (name === 'text-rotation-alignment' &&
+-                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
+-                !this.getLayoutProperty('text-rotation-alignment')) {
+-            return 'map';
+-        } else if (name === 'icon-rotation-alignment' &&
+-                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
+-                !this.getLayoutProperty('icon-rotation-alignment')) {
+-            return 'map';
+-        } else {
+-            return StyleLayer.prototype.getLayoutValue.apply(this, arguments);
+-        }
+-    }
+-
+-});
++    get unmodified() { return this._unmodified; },
+ 
+-},{"../../util/util":349,"../style_layer":293}],300:[function(require,module,exports){
+-'use strict';
++    zoomScale: function(zoom) { return Math.pow(2, zoom); },
++    scaleZoom: function(scale) { return Math.log(scale) / Math.LN2; },
+ 
+-module.exports = require('mapbox-gl-style-spec/reference/latest');
++    project: function(lnglat, worldSize) {
++        return new Point(
++            this.lngX(lnglat.lng, worldSize),
++            this.latY(lnglat.lat, worldSize));
++    },
+ 
+-},{"mapbox-gl-style-spec/reference/latest":397}],301:[function(require,module,exports){
+-'use strict';
++    unproject: function(point, worldSize) {
++        return new LngLat(
++            this.xLng(point.x, worldSize),
++            this.yLat(point.y, worldSize));
++    },
+ 
+-var util = require('../util/util');
+-var interpolate = require('../util/interpolate');
++    get x() { return this.lngX(this.center.lng); },
++    get y() { return this.latY(this.center.lat); },
+ 
+-module.exports = StyleTransition;
++    get point() { return new Point(this.x, this.y); },
+ 
+-/*
+- * Represents a transition between two declarations
+- */
+-function StyleTransition(declaration, oldTransition, value) {
++    /**
++     * latitude to absolute x coord
++     * @param {number} lon
++     * @param {number} [worldSize=this.worldSize]
++     * @returns {number} pixel coordinate
++     * @private
++     */
++    lngX: function(lng, worldSize) {
++        return (180 + lng) * (worldSize || this.worldSize) / 360;
++    },
++    /**
++     * latitude to absolute y coord
++     * @param {number} lat
++     * @param {number} [worldSize=this.worldSize]
++     * @returns {number} pixel coordinate
++     * @private
++     */
++    latY: function(lat, worldSize) {
++        var y = 180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360));
++        return (180 - y) * (worldSize || this.worldSize) / 360;
++    },
+ 
+-    this.declaration = declaration;
+-    this.startTime = this.endTime = (new Date()).getTime();
++    xLng: function(x, worldSize) {
++        return x * 360 / (worldSize || this.worldSize) - 180;
++    },
++    yLat: function(y, worldSize) {
++        var y2 = 180 - y * 360 / (worldSize || this.worldSize);
++        return 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90;
++    },
+ 
+-    var type = declaration.type;
+-    if ((type === 'string' || type === 'array') && declaration.transitionable) {
+-        this.interp = interpZoomTransitioned;
+-    } else {
+-        this.interp = interpolate[type];
+-    }
++    panBy: function(offset) {
++        var point = this.centerPoint._add(offset);
++        this.center = this.pointLocation(point);
++    },
+ 
+-    this.oldTransition = oldTransition;
+-    this.duration = value.duration || 0;
+-    this.delay = value.delay || 0;
++    setLocationAtPoint: function(lnglat, point) {
++        var c = this.locationCoordinate(lnglat);
++        var coordAtPoint = this.pointCoordinate(point);
++        var coordCenter = this.pointCoordinate(this.centerPoint);
++        var translate = coordAtPoint._sub(c);
++        this._unmodified = false;
++        this.center = this.coordinateLocation(coordCenter._sub(translate));
++    },
+ 
+-    if (!this.instant()) {
+-        this.endTime = this.startTime + this.duration + this.delay;
+-        this.ease = util.easeCubicInOut;
+-    }
++    /**
++     * Given a location, return the screen point that corresponds to it
++     * @param {LngLat} lnglat location
++     * @returns {Point} screen point
++     * @private
++     */
++    locationPoint: function(lnglat) {
++        return this.coordinatePoint(this.locationCoordinate(lnglat));
++    },
+ 
+-    if (oldTransition && oldTransition.endTime <= this.startTime) {
+-        // Old transition is done running, so we can
+-        // delete its reference to its old transition.
++    /**
++     * Given a point on screen, return its lnglat
++     * @param {Point} p screen point
++     * @returns {LngLat} lnglat location
++     * @private
++     */
++    pointLocation: function(p) {
++        return this.coordinateLocation(this.pointCoordinate(p));
++    },
+ 
+-        delete oldTransition.oldTransition;
+-    }
+-}
++    /**
++     * Given a geographical lnglat, return an unrounded
++     * coordinate that represents it at this transform's zoom level and
++     * worldsize.
++     * @param {LngLat} lnglat
++     * @returns {Coordinate}
++     * @private
++     */
++    locationCoordinate: function(lnglat) {
++        var k = this.zoomScale(this.tileZoom) / this.worldSize,
++            ll = LngLat.convert(lnglat);
+ 
+-StyleTransition.prototype.instant = function() {
+-    return !this.oldTransition || !this.interp || (this.duration === 0 && this.delay === 0);
+-};
++        return new Coordinate(
++            this.lngX(ll.lng) * k,
++            this.latY(ll.lat) * k,
++            this.tileZoom);
++    },
+ 
+-/*
+- * Return the value of the transitioning property at zoom level `z` and optional time `t`
+- */
+-StyleTransition.prototype.calculate = function(globalProperties, featureProperties) {
+-    var value = this.declaration.calculate(
+-        util.extend({}, globalProperties, {duration: this.duration}),
+-        featureProperties
+-    );
++    /**
++     * Given a Coordinate, return its geographical position.
++     * @param {Coordinate} coord
++     * @returns {LngLat} lnglat
++     * @private
++     */
++    coordinateLocation: function(coord) {
++        var worldSize = this.zoomScale(coord.zoom);
++        return new LngLat(
++            this.xLng(coord.column, worldSize),
++            this.yLat(coord.row, worldSize));
++    },
+ 
+-    if (this.instant()) return value;
++    pointCoordinate: function(p) {
+ 
+-    var t = globalProperties.time || Date.now();
++        var targetZ = 0;
+ 
+-    if (t < this.endTime) {
+-        var oldValue = this.oldTransition.calculate(
+-            util.extend({}, globalProperties, {time: this.startTime}),
+-            featureProperties
+-        );
+-        var eased = this.ease((t - this.startTime - this.delay) / this.duration);
+-        value = this.interp(oldValue, value, eased);
+-    }
++        var matrix = this.coordinatePointMatrix(this.tileZoom);
++        mat4.invert(matrix, matrix);
+ 
+-    return value;
++        if (!matrix) throw new Error("failed to invert matrix");
+ 
+-};
++        // since we don't know the correct projected z value for the point,
++        // unproject two points to get a line and then find the point on that
++        // line with z=0
+ 
+-function interpZoomTransitioned(from, to, t) {
+-    return {
+-        from: from.to,
+-        fromScale: from.toScale,
+-        to: to.to,
+-        toScale: to.toScale,
+-        t: t
+-    };
+-}
++        var coord0 = [p.x, p.y, 0, 1];
++        var coord1 = [p.x, p.y, 1, 1];
+ 
+-},{"../util/interpolate":343,"../util/util":349}],302:[function(require,module,exports){
+-'use strict';
++        vec4.transformMat4(coord0, coord0, matrix);
++        vec4.transformMat4(coord1, coord1, matrix);
+ 
+-module.exports = require('mapbox-gl-style-spec/lib/validate_style.min');
++        var w0 = coord0[3];
++        var w1 = coord1[3];
++        var x0 = coord0[0] / w0;
++        var x1 = coord1[0] / w1;
++        var y0 = coord0[1] / w0;
++        var y1 = coord1[1] / w1;
++        var z0 = coord0[2] / w0;
++        var z1 = coord1[2] / w1;
+ 
+-module.exports.emitErrors = function throwErrors(emitter, errors) {
+-    if (errors && errors.length) {
+-        for (var i = 0; i < errors.length; i++) {
+-            emitter.fire('error', { error: new Error(errors[i].message) });
+-        }
+-        return true;
+-    } else {
+-        return false;
+-    }
+-};
+ 
+-module.exports.throwErrors = function throwErrors(emitter, errors) {
+-    if (errors) {
+-        for (var i = 0; i < errors.length; i++) {
+-            throw new Error(errors[i].message);
+-        }
+-    }
+-};
++        var t = z0 === z1 ? 0 : (targetZ - z0) / (z1 - z0);
+ 
+-},{"mapbox-gl-style-spec/lib/validate_style.min":396}],303:[function(require,module,exports){
+-'use strict';
++        return new Coordinate(
++            interp(x0, x1, t),
++            interp(y0, y1, t),
++            this.tileZoom);
++    },
+ 
+-var Point = require('point-geometry');
++    /**
++     * Given a coordinate, return the screen point that corresponds to it
++     * @param {Coordinate} coord
++     * @returns {Point} screen point
++     * @private
++     */
++    coordinatePoint: function(coord) {
++        var matrix = this.coordinatePointMatrix(coord.zoom);
++        var p = [coord.column, coord.row, 0, 1];
++        vec4.transformMat4(p, p, matrix);
++        return new Point(p[0] / p[3], p[1] / p[3]);
++    },
+ 
+-module.exports = Anchor;
++    coordinatePointMatrix: function(z) {
++        var proj = mat4.copy(new Float64Array(16), this.projMatrix);
++        var scale = this.worldSize / this.zoomScale(z);
++        mat4.scale(proj, proj, [scale, scale, 1]);
++        mat4.multiply(proj, this.getPixelMatrix(), proj);
++        return proj;
++    },
+ 
+-function Anchor(x, y, angle, segment) {
+-    this.x = x;
+-    this.y = y;
+-    this.angle = angle;
++    /**
++     * converts gl coordinates -1..1 to pixels 0..width
++     * @returns {Object} matrix
++     * @private
++     */
++    getPixelMatrix: function() {
++        var m = mat4.create();
++        mat4.scale(m, m, [this.width / 2, -this.height / 2, 1]);
++        mat4.translate(m, m, [1, -1, 0]);
++        return m;
++    },
+ 
+-    if (segment !== undefined) {
+-        this.segment = segment;
+-    }
+-}
++    /**
++     * Calculate the posMatrix that, given a tile coordinate, would be used to display the tile on a map.
++     * @param {TileCoord|Coordinate} coord
++     * @param {Number} maxZoom maximum source zoom to account for overscaling
++     * @private
++     */
++    calculatePosMatrix: function(coord, maxZoom) {
++        if (maxZoom === undefined) maxZoom = Infinity;
++        if (coord instanceof TileCoord) coord = coord.toCoordinate(maxZoom);
+ 
+-Anchor.prototype = Object.create(Point.prototype);
++        // Initialize model-view matrix that converts from the tile coordinates to screen coordinates.
+ 
+-Anchor.prototype.clone = function() {
+-    return new Anchor(this.x, this.y, this.angle, this.segment);
+-};
++        // if z > maxzoom then the tile is actually a overscaled maxzoom tile,
++        // so calculate the matrix the maxzoom tile would use.
++        var z = Math.min(coord.zoom, maxZoom);
+ 
+-},{"point-geometry":404}],304:[function(require,module,exports){
+-'use strict';
++        var scale = this.worldSize / Math.pow(2, z);
++        var posMatrix = new Float64Array(16);
+ 
+-module.exports = checkMaxAngle;
++        mat4.identity(posMatrix);
++        mat4.translate(posMatrix, posMatrix, [coord.column * scale, coord.row * scale, 0]);
++        mat4.scale(posMatrix, posMatrix, [ scale / EXTENT, scale / EXTENT, 1 ]);
++        mat4.multiply(posMatrix, this.projMatrix, posMatrix);
+ 
+-/**
+- * Labels placed around really sharp angles aren't readable. Check if any
+- * part of the potential label has a combined angle that is too big.
+- *
+- * @param {Array<Point>} line
+- * @param {Anchor} anchor The point on the line around which the label is anchored.
+- * @param {number} labelLength The length of the label in geometry units.
+- * @param {number} windowSize The check fails if the combined angles within a part of the line that is `windowSize` long is too big.
+- * @param {number} maxAngle The maximum combined angle that any window along the label is allowed to have.
+- *
+- * @returns {boolean} whether the label should be placed
+- * @private
+- */
+-function checkMaxAngle(line, anchor, labelLength, windowSize, maxAngle) {
++        return new Float32Array(posMatrix);
++    },
+ 
+-    // horizontal labels always pass
+-    if (anchor.segment === undefined) return true;
++    _constrain: function() {
++        if (!this.center || !this.width || !this.height || this._constraining) return;
+ 
+-    var p = anchor;
+-    var index = anchor.segment + 1;
+-    var anchorDistance = 0;
++        this._constraining = true;
+ 
+-    // move backwards along the line to the first segment the label appears on
+-    while (anchorDistance > -labelLength / 2) {
+-        index--;
++        var minY, maxY, minX, maxX, sy, sx, x2, y2,
++            size = this.size,
++            unmodified = this._unmodified;
+ 
+-        // there isn't enough room for the label after the beginning of the line
+-        if (index < 0) return false;
++        if (this.latRange) {
++            minY = this.latY(this.latRange[1]);
++            maxY = this.latY(this.latRange[0]);
++            sy = maxY - minY < size.y ? size.y / (maxY - minY) : 0;
++        }
+ 
+-        anchorDistance -= line[index].dist(p);
+-        p = line[index];
+-    }
++        if (this.lngRange) {
++            minX = this.lngX(this.lngRange[0]);
++            maxX = this.lngX(this.lngRange[1]);
++            sx = maxX - minX < size.x ? size.x / (maxX - minX) : 0;
++        }
+ 
+-    anchorDistance += line[index].dist(line[index + 1]);
+-    index++;
++        // how much the map should scale to fit the screen into given latitude/longitude ranges
++        var s = Math.max(sx || 0, sy || 0);
+ 
+-    // store recent corners and their total angle difference
+-    var recentCorners = [];
+-    var recentAngleDelta = 0;
++        if (s) {
++            this.center = this.unproject(new Point(
++                sx ? (maxX + minX) / 2 : this.x,
++                sy ? (maxY + minY) / 2 : this.y));
++            this.zoom += this.scaleZoom(s);
++            this._unmodified = unmodified;
++            this._constraining = false;
++            return;
++        }
+ 
+-    // move forwards by the length of the label and check angles along the way
+-    while (anchorDistance < labelLength / 2) {
+-        var prev = line[index - 1];
+-        var current = line[index];
+-        var next = line[index + 1];
++        if (this.latRange) {
++            var y = this.y,
++                h2 = size.y / 2;
+ 
+-        // there isn't enough room for the label before the end of the line
+-        if (!next) return false;
++            if (y - h2 < minY) y2 = minY + h2;
++            if (y + h2 > maxY) y2 = maxY - h2;
++        }
+ 
+-        var angleDelta = prev.angleTo(current) - current.angleTo(next);
+-        // restrict angle to -pi..pi range
+-        angleDelta = Math.abs(((angleDelta + 3 * Math.PI) % (Math.PI * 2)) - Math.PI);
++        if (this.lngRange) {
++            var x = this.x,
++                w2 = size.x / 2;
+ 
+-        recentCorners.push({
+-            distance: anchorDistance,
+-            angleDelta: angleDelta
+-        });
+-        recentAngleDelta += angleDelta;
++            if (x - w2 < minX) x2 = minX + w2;
++            if (x + w2 > maxX) x2 = maxX - w2;
++        }
+ 
+-        // remove corners that are far enough away from the list of recent anchors
+-        while (anchorDistance - recentCorners[0].distance > windowSize) {
+-            recentAngleDelta -= recentCorners.shift().angleDelta;
++        // pan the map if the screen goes off the range
++        if (x2 !== undefined || y2 !== undefined) {
++            this.center = this.unproject(new Point(
++                x2 !== undefined ? x2 : this.x,
++                y2 !== undefined ? y2 : this.y));
+         }
+ 
+-        // the sum of angles within the window area exceeds the maximum allowed value. check fails.
+-        if (recentAngleDelta > maxAngle) return false;
++        this._unmodified = unmodified;
++        this._constraining = false;
++    },
+ 
+-        index++;
+-        anchorDistance += current.dist(next);
+-    }
++    _calcProjMatrix: function() {
++        var m = new Float64Array(16);
+ 
+-    // no part of the line had an angle greater than the maximum allowed. check passes.
+-    return true;
+-}
++        // Find the distance from the center point to the center top in altitude units using law of sines.
++        var halfFov = Math.atan(0.5 / this.altitude);
++        var topHalfSurfaceDistance = Math.sin(halfFov) * this.altitude / Math.sin(Math.PI / 2 - this._pitch - halfFov);
+ 
+-},{}],305:[function(require,module,exports){
+-'use strict';
++        // Calculate z value of the farthest fragment that should be rendered.
++        var farZ = Math.cos(Math.PI / 2 - this._pitch) * topHalfSurfaceDistance + this.altitude;
+ 
+-var Point = require('point-geometry');
++        mat4.perspective(m, 2 * Math.atan((this.height / 2) / this.altitude), this.width / this.height, 0.1, farZ);
+ 
+-module.exports = clipLine;
++        mat4.translate(m, m, [0, 0, -this.altitude]);
+ 
+-/**
+- * Returns the part of a multiline that intersects with the provided rectangular box.
+- *
+- * @param {Array<Array<Point>>} lines
+- * @param {number} x1 the left edge of the box
+- * @param {number} y1 the top edge of the box
+- * @param {number} x2 the right edge of the box
+- * @param {number} y2 the bottom edge of the box
+- * @returns {Array<Array<Point>>} lines
+- * @private
+- */
+-function clipLine(lines, x1, y1, x2, y2) {
+-    var clippedLines = [];
++        // After the rotateX, z values are in pixel units. Convert them to
++        // altitude units. 1 altitude unit = the screen height.
++        mat4.scale(m, m, [1, -1, 1 / this.height]);
+ 
+-    for (var l = 0; l < lines.length; l++) {
+-        var line = lines[l];
+-        var clippedLine;
++        mat4.rotateX(m, m, this._pitch);
++        mat4.rotateZ(m, m, this.angle);
++        mat4.translate(m, m, [-this.x, -this.y, 0]);
+ 
+-        for (var i = 0; i < line.length - 1; i++) {
+-            var p0 = line[i];
+-            var p1 = line[i + 1];
++        this.projMatrix = m;
++    }
++};
+ 
++},{"../data/bucket":260,"../source/tile_coord":294,"../util/interpolate":356,"../util/util":362,"./coordinate":268,"./lng_lat":269,"gl-matrix":154,"point-geometry":400}],272:[function(require,module,exports){
++'use strict';
+ 
+-            if (p0.x < x1 && p1.x < x1) {
+-                continue;
+-            } else if (p0.x < x1) {
+-                p0 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
+-            } else if (p1.x < x1) {
+-                p1 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
+-            }
++// Font data From Hershey Simplex Font
++// http://paulbourke.net/dataformats/hershey/
++var simplexFont = {
++    " ": [16, []],
++    "!": [10, [5, 21, 5, 7, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
++    "\"": [16, [4, 21, 4, 14, -1, -1, 12, 21, 12, 14]],
++    "#": [21, [11, 25, 4, -7, -1, -1, 17, 25, 10, -7, -1, -1, 4, 12, 18, 12, -1, -1, 3, 6, 17, 6]],
++    "$": [20, [8, 25, 8, -4, -1, -1, 12, 25, 12, -4, -1, -1, 17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
++    "%": [24, [21, 21, 3, 0, -1, -1, 8, 21, 10, 19, 10, 17, 9, 15, 7, 14, 5, 14, 3, 16, 3, 18, 4, 20, 6, 21, 8, 21, 10, 20, 13, 19, 16, 19, 19, 20, 21, 21, -1, -1, 17, 7, 15, 6, 14, 4, 14, 2, 16, 0, 18, 0, 20, 1, 21, 3, 21, 5, 19, 7, 17, 7]],
++    "&": [26, [23, 12, 23, 13, 22, 14, 21, 14, 20, 13, 19, 11, 17, 6, 15, 3, 13, 1, 11, 0, 7, 0, 5, 1, 4, 2, 3, 4, 3, 6, 4, 8, 5, 9, 12, 13, 13, 14, 14, 16, 14, 18, 13, 20, 11, 21, 9, 20, 8, 18, 8, 16, 9, 13, 11, 10, 16, 3, 18, 1, 20, 0, 22, 0, 23, 1, 23, 2]],
++    "'": [10, [5, 19, 4, 20, 5, 21, 6, 20, 6, 18, 5, 16, 4, 15]],
++    "(": [14, [11, 25, 9, 23, 7, 20, 5, 16, 4, 11, 4, 7, 5, 2, 7, -2, 9, -5, 11, -7]],
++    ")": [14, [3, 25, 5, 23, 7, 20, 9, 16, 10, 11, 10, 7, 9, 2, 7, -2, 5, -5, 3, -7]],
++    "*": [16, [8, 21, 8, 9, -1, -1, 3, 18, 13, 12, -1, -1, 13, 18, 3, 12]],
++    "+": [26, [13, 18, 13, 0, -1, -1, 4, 9, 22, 9]],
++    ",": [10, [6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
++    "-": [26, [4, 9, 22, 9]],
++    ".": [10, [5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
++    "/": [22, [20, 25, 2, -7]],
++    "0": [20, [9, 21, 6, 20, 4, 17, 3, 12, 3, 9, 4, 4, 6, 1, 9, 0, 11, 0, 14, 1, 16, 4, 17, 9, 17, 12, 16, 17, 14, 20, 11, 21, 9, 21]],
++    "1": [20, [6, 17, 8, 18, 11, 21, 11, 0]],
++    "2": [20, [4, 16, 4, 17, 5, 19, 6, 20, 8, 21, 12, 21, 14, 20, 15, 19, 16, 17, 16, 15, 15, 13, 13, 10, 3, 0, 17, 0]],
++    "3": [20, [5, 21, 16, 21, 10, 13, 13, 13, 15, 12, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
++    "4": [20, [13, 21, 3, 7, 18, 7, -1, -1, 13, 21, 13, 0]],
++    "5": [20, [15, 21, 5, 21, 4, 12, 5, 13, 8, 14, 11, 14, 14, 13, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
++    "6": [20, [16, 18, 15, 20, 12, 21, 10, 21, 7, 20, 5, 17, 4, 12, 4, 7, 5, 3, 7, 1, 10, 0, 11, 0, 14, 1, 16, 3, 17, 6, 17, 7, 16, 10, 14, 12, 11, 13, 10, 13, 7, 12, 5, 10, 4, 7]],
++    "7": [20, [17, 21, 7, 0, -1, -1, 3, 21, 17, 21]],
++    "8": [20, [8, 21, 5, 20, 4, 18, 4, 16, 5, 14, 7, 13, 11, 12, 14, 11, 16, 9, 17, 7, 17, 4, 16, 2, 15, 1, 12, 0, 8, 0, 5, 1, 4, 2, 3, 4, 3, 7, 4, 9, 6, 11, 9, 12, 13, 13, 15, 14, 16, 16, 16, 18, 15, 20, 12, 21, 8, 21]],
++    "9": [20, [16, 14, 15, 11, 13, 9, 10, 8, 9, 8, 6, 9, 4, 11, 3, 14, 3, 15, 4, 18, 6, 20, 9, 21, 10, 21, 13, 20, 15, 18, 16, 14, 16, 9, 15, 4, 13, 1, 10, 0, 8, 0, 5, 1, 4, 3]],
++    ":": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
++    ";": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
++    "<": [24, [20, 18, 4, 9, 20, 0]],
++    "=": [26, [4, 12, 22, 12, -1, -1, 4, 6, 22, 6]],
++    ">": [24, [4, 18, 20, 9, 4, 0]],
++    "?": [18, [3, 16, 3, 17, 4, 19, 5, 20, 7, 21, 11, 21, 13, 20, 14, 19, 15, 17, 15, 15, 14, 13, 13, 12, 9, 10, 9, 7, -1, -1, 9, 2, 8, 1, 9, 0, 10, 1, 9, 2]],
++    "@": [27, [18, 13, 17, 15, 15, 16, 12, 16, 10, 15, 9, 14, 8, 11, 8, 8, 9, 6, 11, 5, 14, 5, 16, 6, 17, 8, -1, -1, 12, 16, 10, 14, 9, 11, 9, 8, 10, 6, 11, 5, -1, -1, 18, 16, 17, 8, 17, 6, 19, 5, 21, 5, 23, 7, 24, 10, 24, 12, 23, 15, 22, 17, 20, 19, 18, 20, 15, 21, 12, 21, 9, 20, 7, 19, 5, 17, 4, 15, 3, 12, 3, 9, 4, 6, 5, 4, 7, 2, 9, 1, 12, 0, 15, 0, 18, 1, 20, 2, 21, 3, -1, -1, 19, 16, 18, 8, 18, 6, 19, 5]],
++    "A": [18, [9, 21, 1, 0, -1, -1, 9, 21, 17, 0, -1, -1, 4, 7, 14, 7]],
++    "B": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, -1, -1, 4, 11, 13, 11, 16, 10, 17, 9, 18, 7, 18, 4, 17, 2, 16, 1, 13, 0, 4, 0]],
++    "C": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5]],
++    "D": [21, [4, 21, 4, 0, -1, -1, 4, 21, 11, 21, 14, 20, 16, 18, 17, 16, 18, 13, 18, 8, 17, 5, 16, 3, 14, 1, 11, 0, 4, 0]],
++    "E": [19, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11, -1, -1, 4, 0, 17, 0]],
++    "F": [18, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11]],
++    "G": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 18, 8, -1, -1, 13, 8, 18, 8]],
++    "H": [22, [4, 21, 4, 0, -1, -1, 18, 21, 18, 0, -1, -1, 4, 11, 18, 11]],
++    "I": [8, [4, 21, 4, 0]],
++    "J": [16, [12, 21, 12, 5, 11, 2, 10, 1, 8, 0, 6, 0, 4, 1, 3, 2, 2, 5, 2, 7]],
++    "K": [21, [4, 21, 4, 0, -1, -1, 18, 21, 4, 7, -1, -1, 9, 12, 18, 0]],
++    "L": [17, [4, 21, 4, 0, -1, -1, 4, 0, 16, 0]],
++    "M": [24, [4, 21, 4, 0, -1, -1, 4, 21, 12, 0, -1, -1, 20, 21, 12, 0, -1, -1, 20, 21, 20, 0]],
++    "N": [22, [4, 21, 4, 0, -1, -1, 4, 21, 18, 0, -1, -1, 18, 21, 18, 0]],
++    "O": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21]],
++    "P": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 14, 17, 12, 16, 11, 13, 10, 4, 10]],
++    "Q": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21, -1, -1, 12, 4, 18, -2]],
++    "R": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, 4, 11, -1, -1, 11, 11, 18, 0]],
++    "S": [20, [17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
++    "T": [16, [8, 21, 8, 0, -1, -1, 1, 21, 15, 21]],
++    "U": [22, [4, 21, 4, 6, 5, 3, 7, 1, 10, 0, 12, 0, 15, 1, 17, 3, 18, 6, 18, 21]],
++    "V": [18, [1, 21, 9, 0, -1, -1, 17, 21, 9, 0]],
++    "W": [24, [2, 21, 7, 0, -1, -1, 12, 21, 7, 0, -1, -1, 12, 21, 17, 0, -1, -1, 22, 21, 17, 0]],
++    "X": [20, [3, 21, 17, 0, -1, -1, 17, 21, 3, 0]],
++    "Y": [18, [1, 21, 9, 11, 9, 0, -1, -1, 17, 21, 9, 11]],
++    "Z": [20, [17, 21, 3, 0, -1, -1, 3, 21, 17, 21, -1, -1, 3, 0, 17, 0]],
++    "[": [14, [4, 25, 4, -7, -1, -1, 5, 25, 5, -7, -1, -1, 4, 25, 11, 25, -1, -1, 4, -7, 11, -7]],
++    "\\": [14, [0, 21, 14, -3]],
++    "]": [14, [9, 25, 9, -7, -1, -1, 10, 25, 10, -7, -1, -1, 3, 25, 10, 25, -1, -1, 3, -7, 10, -7]],
++    "^": [16, [6, 15, 8, 18, 10, 15, -1, -1, 3, 12, 8, 17, 13, 12, -1, -1, 8, 17, 8, 0]],
++    "_": [16, [0, -2, 16, -2]],
++    "`": [10, [6, 21, 5, 20, 4, 18, 4, 16, 5, 15, 6, 16, 5, 17]],
++    "a": [19, [15, 14, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "b": [19, [4, 21, 4, 0, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
++    "c": [18, [15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "d": [19, [15, 21, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "e": [18, [3, 8, 15, 8, 15, 10, 14, 12, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "f": [12, [10, 21, 8, 21, 6, 20, 5, 17, 5, 0, -1, -1, 2, 14, 9, 14]],
++    "g": [19, [15, 14, 15, -2, 14, -5, 13, -6, 11, -7, 8, -7, 6, -6, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "h": [19, [4, 21, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
++    "i": [8, [3, 21, 4, 20, 5, 21, 4, 22, 3, 21, -1, -1, 4, 14, 4, 0]],
++    "j": [10, [5, 21, 6, 20, 7, 21, 6, 22, 5, 21, -1, -1, 6, 14, 6, -3, 5, -6, 3, -7, 1, -7]],
++    "k": [17, [4, 21, 4, 0, -1, -1, 14, 14, 4, 4, -1, -1, 8, 8, 15, 0]],
++    "l": [8, [4, 21, 4, 0]],
++    "m": [30, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0, -1, -1, 15, 10, 18, 13, 20, 14, 23, 14, 25, 13, 26, 10, 26, 0]],
++    "n": [19, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
++    "o": [19, [8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3, 16, 6, 16, 8, 15, 11, 13, 13, 11, 14, 8, 14]],
++    "p": [19, [4, 14, 4, -7, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
++    "q": [19, [15, 14, 15, -7, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
++    "r": [13, [4, 14, 4, 0, -1, -1, 4, 8, 5, 11, 7, 13, 9, 14, 12, 14]],
++    "s": [17, [14, 11, 13, 13, 10, 14, 7, 14, 4, 13, 3, 11, 4, 9, 6, 8, 11, 7, 13, 6, 14, 4, 14, 3, 13, 1, 10, 0, 7, 0, 4, 1, 3, 3]],
++    "t": [12, [5, 21, 5, 4, 6, 1, 8, 0, 10, 0, -1, -1, 2, 14, 9, 14]],
++    "u": [19, [4, 14, 4, 4, 5, 1, 7, 0, 10, 0, 12, 1, 15, 4, -1, -1, 15, 14, 15, 0]],
++    "v": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0]],
++    "w": [22, [3, 14, 7, 0, -1, -1, 11, 14, 7, 0, -1, -1, 11, 14, 15, 0, -1, -1, 19, 14, 15, 0]],
++    "x": [17, [3, 14, 14, 0, -1, -1, 14, 14, 3, 0]],
++    "y": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0, 6, -4, 4, -6, 2, -7, 1, -7]],
++    "z": [17, [14, 14, 3, 0, -1, -1, 3, 14, 14, 14, -1, -1, 3, 0, 14, 0]],
++    "{": [14, [9, 25, 7, 24, 6, 23, 5, 21, 5, 19, 6, 17, 7, 16, 8, 14, 8, 12, 6, 10, -1, -1, 7, 24, 6, 22, 6, 20, 7, 18, 8, 17, 9, 15, 9, 13, 8, 11, 4, 9, 8, 7, 9, 5, 9, 3, 8, 1, 7, 0, 6, -2, 6, -4, 7, -6, -1, -1, 6, 8, 8, 6, 8, 4, 7, 2, 6, 1, 5, -1, 5, -3, 6, -5, 7, -6, 9, -7]],
++    "|": [8, [4, 25, 4, -7]],
++    "}": [14, [5, 25, 7, 24, 8, 23, 9, 21, 9, 19, 8, 17, 7, 16, 6, 14, 6, 12, 8, 10, -1, -1, 7, 24, 8, 22, 8, 20, 7, 18, 6, 17, 5, 15, 5, 13, 6, 11, 10, 9, 6, 7, 5, 5, 5, 3, 6, 1, 7, 0, 8, -2, 8, -4, 7, -6, -1, -1, 8, 8, 6, 6, 6, 4, 7, 2, 8, 1, 9, -1, 9, -3, 8, -5, 7, -6, 5, -7]],
++    "~": [24, [3, 6, 3, 8, 4, 11, 6, 12, 8, 12, 10, 11, 14, 8, 16, 7, 18, 7, 20, 8, 21, 10, -1, -1, 3, 8, 4, 10, 6, 11, 8, 11, 10, 10, 14, 7, 16, 6, 18, 6, 20, 7, 21, 10, 21, 12]]
++};
+ 
+-            if (p0.y < y1 && p1.y < y1) {
+-                continue;
+-            } else if (p0.y < y1) {
+-                p0 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
+-            } else if (p1.y < y1) {
+-                p1 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
+-            }
++module.exports = function textVertices(text, left, baseline, scale) {
++    scale = scale || 1;
+ 
+-            if (p0.x >= x2 && p1.x >= x2) {
+-                continue;
+-            } else if (p0.x >= x2) {
+-                p0 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
+-            } else if (p1.x >= x2) {
+-                p1 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
+-            }
++    var strokes = [],
++        i, len, j, len2, glyph, x, y, prev;
+ 
+-            if (p0.y >= y2 && p1.y >= y2) {
+-                continue;
+-            } else if (p0.y >= y2) {
+-                p0 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
+-            } else if (p1.y >= y2) {
+-                p1 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
+-            }
++    for (i = 0, len = text.length; i < len; i++) {
++        glyph = simplexFont[text[i]];
++        if (!glyph) continue;
++        prev = null;
+ 
+-            if (!clippedLine || !p0.equals(clippedLine[clippedLine.length - 1])) {
+-                clippedLine = [p0];
+-                clippedLines.push(clippedLine);
+-            }
++        for (j = 0, len2 = glyph[1].length; j < len2; j += 2) {
++            if (glyph[1][j] === -1 && glyph[1][j + 1] === -1) {
++                prev = null;
+ 
+-            clippedLine.push(p1);
++            } else {
++                x = left + glyph[1][j] * scale;
++                y = baseline - glyph[1][j + 1] * scale;
++                if (prev) {
++                    strokes.push(prev.x, prev.y, x, y);
++                }
++                prev = {x: x, y: y};
++            }
+         }
++        left += glyph[0] * scale;
+     }
+ 
+-    return clippedLines;
+-}
++    return strokes;
++};
+ 
+-},{"point-geometry":404}],306:[function(require,module,exports){
++},{}],273:[function(require,module,exports){
+ 'use strict';
+ 
+-var StructArrayType = require('../util/struct_array');
+-var util = require('../util/util');
+-var Point = require('point-geometry');
+-
+ /**
+- * A collision box represents an area of the map that that is covered by a
+- * label. CollisionFeature uses one or more of these collision boxes to
+- * represent all the area covered by a single label. They are used to
+- * prevent collisions between labels.
+- *
+- * A collision box actually represents a 3d volume. The first two dimensions,
+- * x and y, are specified with `anchor` along with `x1`, `y1`, `x2`, `y2`.
+- * The third dimension, zoom, is limited by `maxScale` which determines
+- * how far in the z dimensions the box extends.
+- *
+- * As you zoom in on a map, all points on the map get further and further apart
+- * but labels stay roughly the same size. Labels cover less real world area on
+- * the map at higher zoom levels than they do at lower zoom levels. This is why
+- * areas are are represented with an anchor point and offsets from that point
+- * instead of just using four absolute points.
+- *
+- * Line labels are represented by a set of these boxes spaced out along a line.
+- * When you zoom in, line labels cover less real world distance along the line
+- * than they used to. Collision boxes near the edges that used to cover label
+- * no longer do. If a box doesn't cover the label anymore it should be ignored
+- * when doing collision checks. `maxScale` is how much you can scale the map
+- * before the label isn't within the box anymore.
+- * For example
+- * lower zoom:
+- * https://cloud.githubusercontent.com/assets/1421652/8060094/4d975f76-0e91-11e5-84b1-4edeb30a5875.png
+- * slightly higher zoom:
+- * https://cloud.githubusercontent.com/assets/1421652/8060061/26ae1c38-0e91-11e5-8c5a-9f380bf29f0a.png
+- * In the zoomed in image the two grey boxes on either side don't cover the
+- * label anymore. Their maxScale is smaller than the current scale.
+- *
++ * mapboxgl is a A WebGL JavaScript interactive maps library that can render
++ * [Mapbox vector tiles](https://www.mapbox.com/blog/vector-tiles/).
+  *
+- * @class CollisionBoxArray
+- * @private
++ * @module mapboxgl
++ * @summary WebGL JavaScript map library
+  */
+ 
+-var CollisionBoxArray = module.exports = new StructArrayType({
+-    members: [
+-        // the box is centered around the anchor point
+-        { type: 'Int16', name: 'anchorPointX' },
+-        { type: 'Int16', name: 'anchorPointY' },
++// jshint -W079
++var mapboxgl = module.exports = {};
+ 
+-        // distances to the edges from the anchor
+-        { type: 'Int16', name: 'x1' },
+-        { type: 'Int16', name: 'y1' },
+-        { type: 'Int16', name: 'x2' },
+-        { type: 'Int16', name: 'y2' },
++mapboxgl.Map = require('./ui/map');
++mapboxgl.Control = require('./ui/control/control');
++mapboxgl.Navigation = require('./ui/control/navigation');
++mapboxgl.Geolocate = require('./ui/control/geolocate');
++mapboxgl.Attribution = require('./ui/control/attribution');
++mapboxgl.Popup = require('./ui/popup');
++
++mapboxgl.GeoJSONSource = require('./source/geojson_source');
++mapboxgl.VideoSource = require('./source/video_source');
++mapboxgl.ImageSource = require('./source/image_source');
++
++mapboxgl.Style = require('./style/style');
++
++mapboxgl.LngLat = require('./geo/lng_lat');
++mapboxgl.LngLatBounds = require('./geo/lng_lat_bounds');
++mapboxgl.Point = require('point-geometry');
+ 
+-        // the box is only valid for scales < maxScale.
+-        // The box does not block other boxes at scales >= maxScale;
+-        { type: 'Float32', name: 'maxScale' },
++mapboxgl.Evented = require('./util/evented');
++mapboxgl.util = require('./util/util');
+ 
+-        // the index of the feature in the original vectortile
+-        { type: 'Uint32', name: 'featureIndex' },
+-        // the source layer the feature appears in
+-        { type: 'Uint16', name: 'sourceLayerIndex' },
+-        // the bucket the feature appears in
+-        { type: 'Uint16', name: 'bucketIndex' },
++mapboxgl.supported = require('./util/browser').supported;
+ 
+-        // rotated and scaled bbox used for indexing
+-        { type: 'Int16', name: 'bbox0' },
+-        { type: 'Int16', name: 'bbox1' },
+-        { type: 'Int16', name: 'bbox2' },
+-        { type: 'Int16', name: 'bbox3' },
++var ajax = require('./util/ajax');
++mapboxgl.util.getJSON = ajax.getJSON;
++mapboxgl.util.getArrayBuffer = ajax.getArrayBuffer;
+ 
+-        { type: 'Float32', name: 'placementScale' }
+-    ]});
++var config = require('./util/config');
++mapboxgl.config = config;
+ 
+-util.extendAll(CollisionBoxArray.prototype.StructType.prototype, {
+-    get anchorPoint() {
+-        return new Point(this.anchorPointX, this.anchorPointY);
+-    }
++Object.defineProperty(mapboxgl, 'accessToken', {
++    get: function() { return config.ACCESS_TOKEN; },
++    set: function(token) { config.ACCESS_TOKEN = token; }
+ });
+ 
+-},{"../util/struct_array":347,"../util/util":349,"point-geometry":404}],307:[function(require,module,exports){
++},{"./geo/lng_lat":269,"./geo/lng_lat_bounds":270,"./source/geojson_source":287,"./source/image_source":289,"./source/video_source":297,"./style/style":303,"./ui/control/attribution":331,"./ui/control/control":332,"./ui/control/geolocate":333,"./ui/control/navigation":334,"./ui/map":344,"./ui/popup":345,"./util/ajax":347,"./util/browser":348,"./util/config":352,"./util/evented":354,"./util/util":362,"point-geometry":400}],274:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = CollisionFeature;
++var TilePyramid = require('../source/tile_pyramid');
++var pyramid = new TilePyramid({ tileSize: 512 });
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-/**
+- * A CollisionFeature represents the area of the tile covered by a single label.
+- * It is used with CollisionTile to check if the label overlaps with any
+- * previous labels. A CollisionFeature is mostly just a set of CollisionBox
+- * objects.
+- *
+- * @class CollisionFeature
+- * @param {Array<Point>} line The geometry the label is placed on.
+- * @param {Anchor} anchor The point along the line around which the label is anchored.
+- * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
+- * @param {Array<string>} layerIDs The IDs of the layers that this CollisionFeature is a part of.
+- * @param {Object} shaped The text or icon shaping results.
+- * @param {number} boxScale A magic number used to convert from glyph metrics units to geometry units.
+- * @param {number} padding The amount of padding to add around the label edges.
+- * @param {boolean} alignLine Whether the label is aligned with the line or the viewport.
+- *
+- * @private
+- */
+-function CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex, shaped, boxScale, padding, alignLine, straight) {
++module.exports = drawBackground;
+ 
+-    var y1 = shaped.top * boxScale - padding;
+-    var y2 = shaped.bottom * boxScale + padding;
+-    var x1 = shaped.left * boxScale - padding;
+-    var x2 = shaped.right * boxScale + padding;
++function drawBackground(painter, source, layer) {
++    var gl = painter.gl;
++    var transform = painter.transform;
++    var color = util.premultiply(layer.paint['background-color']);
++    var image = layer.paint['background-pattern'];
++    var opacity = layer.paint['background-opacity'];
++    var program;
+ 
+-    this.boxStartIndex = collisionBoxArray.length;
++    var imagePosA = image ? painter.spriteAtlas.getPosition(image.from, true) : null;
++    var imagePosB = image ? painter.spriteAtlas.getPosition(image.to, true) : null;
+ 
+-    if (alignLine) {
++    painter.setDepthSublayer(0);
++    if (imagePosA && imagePosB) {
+ 
+-        var height = y2 - y1;
+-        var length = x2 - x1;
++        if (painter.isOpaquePass) return;
+ 
+-        if (height > 0) {
+-            // set minimum box height to avoid very many small labels
+-            height = Math.max(10 * boxScale, height);
++        // Draw texture fill
++        program = painter.useProgram('pattern');
++        gl.uniform1i(program.u_image, 0);
++        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
++        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
++        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
++        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
++        gl.uniform1f(program.u_opacity, opacity);
+ 
+-            if (straight) {
+-                // used for icon labels that are aligned with the line, but don't curve along it
+-                var vector = line[anchor.segment + 1].sub(line[anchor.segment])._unit()._mult(length);
+-                var straightLine = [anchor.sub(vector), anchor.add(vector)];
+-                this._addLineCollisionBoxes(collisionBoxArray, straightLine, anchor, 0, length, height, featureIndex, sourceLayerIndex, bucketIndex);
+-            } else {
+-                // used for text labels that curve along a line
+-                this._addLineCollisionBoxes(collisionBoxArray, line, anchor, anchor.segment, length, height, featureIndex, sourceLayerIndex, bucketIndex);
+-            }
+-        }
++        gl.uniform1f(program.u_mix, image.t);
+ 
++        painter.spriteAtlas.bind(gl, true);
++
++        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
+     } else {
+-        collisionBoxArray.emplaceBack(anchor.x, anchor.y, x1, y1, x2, y2, Infinity, featureIndex, sourceLayerIndex, bucketIndex,
+-                0, 0, 0, 0, 0);
++        // Draw filling rectangle.
++        if (painter.isOpaquePass !== (color[3] === 1)) return;
++
++        program = painter.useProgram('fill');
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, opacity);
++        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
+     }
+ 
+-    this.boxEndIndex = collisionBoxArray.length;
+-}
++    gl.disable(gl.STENCIL_TEST);
+ 
+-/**
+- * Create a set of CollisionBox objects for a line.
+- *
+- * @param {Array<Point>} line
+- * @param {Anchor} anchor
+- * @param {number} labelLength The length of the label in geometry units.
+- * @param {Anchor} anchor The point along the line around which the label is anchored.
+- * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
+- * @param {number} boxSize The size of the collision boxes that will be created.
+- *
+- * @private
+- */
+-CollisionFeature.prototype._addLineCollisionBoxes = function(collisionBoxArray, line, anchor, segment, labelLength, boxSize, featureIndex, sourceLayerIndex, bucketIndex) {
+-    var step = boxSize / 2;
+-    var nBoxes = Math.floor(labelLength / step);
++    // We need to draw the background in tiles in order to use calculatePosMatrix
++    // which applies the projection matrix (transform.projMatrix). Otherwise
++    // the depth and stencil buffers get into a bad state.
++    // This can be refactored into a single draw call once earcut lands and
++    // we don't have so much going on in the stencil buffer.
++    var coords = pyramid.coveringTiles(transform);
++    for (var c = 0; c < coords.length; c++) {
++        var coord = coords[c];
++        var tileSize = 512;
++        // var pixelsToTileUnitsBound = pixelsToTileUnits.bind({coord:coord, tileSize: tileSize});
++        if (imagePosA && imagePosB) {
++            var imageSizeScaledA = [
++                (imagePosA.size[0] * image.fromScale),
++                (imagePosA.size[1] * image.fromScale)
++            ];
++            var imageSizeScaledB = [
++                (imagePosB.size[0] * image.toScale),
++                (imagePosB.size[1] * image.toScale)
++            ];
++            var tile = {coord:coord, tileSize: tileSize};
+ 
+-    // offset the center of the first box by half a box so that the edge of the
+-    // box is at the edge of the label.
+-    var firstBoxOffset = -boxSize / 2;
++            gl.uniform2fv(program.u_patternscale_a, [
++                1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
++                1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
++            ]);
+ 
+-    var bboxes = this.boxes;
++            gl.uniform2fv(program.u_patternscale_b, [
++                1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
++                1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
++            ]);
++            var tileSizeAtNearestZoom = tileSize * Math.pow(2, painter.transform.tileZoom - coord.z);
+ 
+-    var p = anchor;
+-    var index = segment + 1;
+-    var anchorDistance = firstBoxOffset;
++            var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
++            var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * coord.y;
+ 
+-    // move backwards along the line to the first segment the label appears on
+-    do {
+-        index--;
++            var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (coord.x + coord.w * Math.pow(2, coord.z));
++            var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * coord.y;
+ 
+-        // there isn't enough room for the label after the beginning of the line
+-        // checkMaxAngle should have already caught this
+-        if (index < 0) return bboxes;
++            gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
++            gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
++        }
+ 
+-        anchorDistance -= line[index].dist(p);
+-        p = line[index];
+-    } while (anchorDistance > -labelLength / 2);
++        gl.uniformMatrix4fv(program.u_matrix, false, painter.transform.calculatePosMatrix(coord));
++        gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
++    }
+ 
+-    var segmentLength = line[index].dist(line[index + 1]);
++    gl.stencilMask(0x00);
++    gl.stencilFunc(gl.EQUAL, 0x80, 0x80);
++}
+ 
+-    for (var i = 0; i < nBoxes; i++) {
+-        // the distance the box will be from the anchor
+-        var boxDistanceToAnchor = -labelLength / 2 + i * step;
++},{"../source/pixels_to_tile_units":290,"../source/tile_pyramid":295,"../util/util":362}],275:[function(require,module,exports){
++'use strict';
+ 
+-        // the box is not on the current segment. Move to the next segment.
+-        while (anchorDistance + segmentLength < boxDistanceToAnchor) {
+-            anchorDistance += segmentLength;
+-            index++;
++var browser = require('../util/browser');
+ 
+-            // There isn't enough room before the end of the line.
+-            if (index + 1 >= line.length) return bboxes;
++module.exports = drawCircles;
+ 
+-            segmentLength = line[index].dist(line[index + 1]);
+-        }
++function drawCircles(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
+ 
+-        // the distance the box will be from the beginning of the segment
+-        var segmentBoxDistance = boxDistanceToAnchor - anchorDistance;
++    var gl = painter.gl;
+ 
+-        var p0 = line[index];
+-        var p1 = line[index + 1];
+-        var boxAnchorPoint = p1.sub(p0)._unit()._mult(segmentBoxDistance)._add(p0)._round();
++    painter.setDepthSublayer(0);
++    painter.depthMask(false);
+ 
+-        var distanceToInnerEdge = Math.max(Math.abs(boxDistanceToAnchor - firstBoxOffset) - step / 2, 0);
+-        var maxScale = labelLength / 2 / distanceToInnerEdge;
++    // Allow circles to be drawn across boundaries, so that
++    // large circles are not clipped to tiles
++    gl.disable(gl.STENCIL_TEST);
+ 
+-        collisionBoxArray.emplaceBack(boxAnchorPoint.x, boxAnchorPoint.y,
+-                -boxSize / 2, -boxSize / 2, boxSize / 2, boxSize / 2, maxScale,
+-                featureIndex, sourceLayerIndex, bucketIndex,
+-                0, 0, 0, 0, 0);
+-    }
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
+ 
+-    return bboxes;
+-};
++        var tile = source.getTile(coord);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bufferGroups = bucket.bufferGroups.circle;
++        if (!bufferGroups) continue;
+ 
+-},{}],308:[function(require,module,exports){
+-'use strict';
++        var program = painter.useProgram('circle', bucket.getProgramMacros('circle', layer));
+ 
+-var Point = require('point-geometry');
+-var EXTENT = require('../data/bucket').EXTENT;
+-var Grid = require('grid-index');
++        gl.uniform2fv(program.u_extrude_scale, painter.transform.pixelsToGLUnits);
++        gl.uniform1f(program.u_blur, layer.paint['circle-blur']);
++        gl.uniform1f(program.u_devicepixelratio, browser.devicePixelRatio);
++        gl.uniform1f(program.u_opacity, layer.paint['circle-opacity']);
+ 
+-module.exports = CollisionTile;
++        gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
++            coord.posMatrix,
++            tile,
++            layer.paint['circle-translate'],
++            layer.paint['circle-translate-anchor']
++        ));
+ 
+-/**
+- * A collision tile used to prevent symbols from overlapping. It keep tracks of
+- * where previous symbols have been placed and is used to check if a new
+- * symbol overlaps with any previously added symbols.
+- *
+- * @class CollisionTile
+- * @param {number} angle
+- * @param {number} pitch
+- * @private
+- */
+-function CollisionTile(angle, pitch, collisionBoxArray) {
+-    if (typeof angle === 'object') {
+-        var serialized = angle;
+-        collisionBoxArray = pitch;
+-        angle = serialized.angle;
+-        pitch = serialized.pitch;
+-        this.grid = new Grid(serialized.grid);
+-        this.ignoredGrid = new Grid(serialized.ignoredGrid);
+-    } else {
+-        this.grid = new Grid(EXTENT, 12, 6);
+-        this.ignoredGrid = new Grid(EXTENT, 12, 0);
++        bucket.setUniforms(gl, 'circle', program, layer, {zoom: painter.transform.zoom});
++
++        for (var k = 0; k < bufferGroups.length; k++) {
++            var group = bufferGroups[k];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element, group.paint[layer.id]);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++        }
+     }
++}
+ 
+-    this.angle = angle;
+-    this.pitch = pitch;
++},{"../util/browser":348}],276:[function(require,module,exports){
++'use strict';
+ 
+-    var sin = Math.sin(angle),
+-        cos = Math.cos(angle);
+-    this.rotationMatrix = [cos, -sin, sin, cos];
+-    this.reverseRotationMatrix = [cos, sin, -sin, cos];
++module.exports = drawCollisionDebug;
+ 
+-    // Stretch boxes in y direction to account for the map tilt.
+-    this.yStretch = 1 / Math.cos(pitch / 180 * Math.PI);
++function drawCollisionDebug(painter, source, layer, coords) {
++    var gl = painter.gl;
++    gl.enable(gl.STENCIL_TEST);
++    var program = painter.useProgram('collisionbox');
+ 
+-    // The amount the map is squished depends on the y position.
+-    // Sort of account for this by making all boxes a bit bigger.
+-    this.yStretch = Math.pow(this.yStretch, 1.3);
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
++        var tile = source.getTile(coord);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bufferGroups = bucket.bufferGroups.collisionBox;
+ 
+-    this.collisionBoxArray = collisionBoxArray;
+-    if (collisionBoxArray.length === 0) {
+-        // the first collisionBoxArray is passed to a CollisionTile
++        if (!bufferGroups || !bufferGroups.length) continue;
++        var group = bufferGroups[0];
++        if (group.layout.vertex.length === 0) continue;
+ 
+-        // tempCollisionBox
+-        collisionBoxArray.emplaceBack();
++        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
+ 
+-        var maxInt16 = 32767;
+-        //left
+-        collisionBoxArray.emplaceBack(0, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
+-        // right
+-        collisionBoxArray.emplaceBack(EXTENT, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
+-        // top
+-        collisionBoxArray.emplaceBack(0, 0, -maxInt16, 0, maxInt16, 0, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
+-        // bottom
+-        collisionBoxArray.emplaceBack(0, EXTENT, -maxInt16, 0, maxInt16, 0, maxInt16,
+-                0, 0, 0, 0, 0, 0, 0, 0,
+-                0);
++        painter.enableTileClippingMask(coord);
++
++        painter.lineWidth(1);
++        gl.uniform1f(program.u_scale, Math.pow(2, painter.transform.zoom - tile.coord.z));
++        gl.uniform1f(program.u_zoom, painter.transform.zoom * 10);
++        gl.uniform1f(program.u_maxzoom, (tile.coord.z + 1) * 10);
++
++        group.vaos[layer.id].bind(gl, program, group.layout.vertex);
++        gl.drawArrays(gl.LINES, 0, group.layout.vertex.length);
+     }
++}
+ 
+-    this.tempCollisionBox = collisionBoxArray.get(0);
+-    this.edges = [
+-        collisionBoxArray.get(1),
+-        collisionBoxArray.get(2),
+-        collisionBoxArray.get(3),
+-        collisionBoxArray.get(4)
+-    ];
++},{}],277:[function(require,module,exports){
++'use strict';
++
++var textVertices = require('../lib/debugtext');
++var browser = require('../util/browser');
++var mat4 = require('gl-matrix').mat4;
++var EXTENT = require('../data/bucket').EXTENT;
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('./vertex_array_object');
++
++module.exports = drawDebug;
++
++function drawDebug(painter, source, coords) {
++    if (painter.isOpaquePass) return;
++    if (!painter.options.debug) return;
++
++    for (var i = 0; i < coords.length; i++) {
++        drawDebugTile(painter, source, coords[i]);
++    }
+ }
+ 
+-CollisionTile.prototype.serialize = function() {
+-    var data = {
+-        angle: this.angle,
+-        pitch: this.pitch,
+-        grid: this.grid.toArrayBuffer(),
+-        ignoredGrid: this.ignoredGrid.toArrayBuffer()
+-    };
+-    return {
+-        data: data,
+-        transferables: [data.grid, data.ignoredGrid]
+-    };
+-};
++function drawDebugTile(painter, source, coord) {
++    var gl = painter.gl;
+ 
+-CollisionTile.prototype.minScale = 0.25;
+-CollisionTile.prototype.maxScale = 2;
++    gl.disable(gl.STENCIL_TEST);
++    painter.lineWidth(1 * browser.devicePixelRatio);
+ 
++    var posMatrix = coord.posMatrix;
++    var program = painter.useProgram('debug');
+ 
+-/**
+- * Find the scale at which the collisionFeature can be shown without
+- * overlapping with other features.
+- *
+- * @param {CollisionFeature} collisionFeature
+- * @returns {number} placementScale
+- * @private
+- */
+-CollisionTile.prototype.placeCollisionFeature = function(collisionFeature, allowOverlap, avoidEdges) {
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++    gl.uniform4f(program.u_color, 1, 0, 0, 1);
++    painter.debugVAO.bind(gl, program, painter.debugBuffer);
++    gl.drawArrays(gl.LINE_STRIP, 0, painter.debugBuffer.length);
+ 
+-    var collisionBoxArray = this.collisionBoxArray;
+-    var minPlacementScale = this.minScale;
+-    var rotationMatrix = this.rotationMatrix;
+-    var yStretch = this.yStretch;
++    var vertices = textVertices(coord.toString(), 50, 200, 5);
++    var debugTextArray = new painter.PosArray();
++    for (var v = 0; v < vertices.length; v += 2) {
++        debugTextArray.emplaceBack(vertices[v], vertices[v + 1]);
++    }
++    var debugTextBuffer = new Buffer(debugTextArray.serialize(), painter.PosArray.serialize(), Buffer.BufferType.VERTEX);
++    var debugTextVAO = new VertexArrayObject();
++    debugTextVAO.bind(gl, program, debugTextBuffer);
++    gl.uniform4f(program.u_color, 1, 1, 1, 1);
+ 
+-    for (var b = collisionFeature.boxStartIndex; b < collisionFeature.boxEndIndex; b++) {
++    // Draw the halo with multiple 1px lines instead of one wider line because
++    // the gl spec doesn't guarantee support for lines with width > 1.
++    var tileSize = source.getTile(coord).tileSize;
++    var onePixel = EXTENT / (Math.pow(2, painter.transform.zoom - coord.z) * tileSize);
++    var translations = [[-1, -1], [-1, 1], [1, -1], [1, 1]];
++    for (var i = 0; i < translations.length; i++) {
++        var translation = translations[i];
++        gl.uniformMatrix4fv(program.u_matrix, false, mat4.translate([], posMatrix, [onePixel * translation[0], onePixel * translation[1], 0]));
++        gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
++    }
+ 
+-        var box = collisionBoxArray.get(b);
++    gl.uniform4f(program.u_color, 0, 0, 0, 1);
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
++    gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
++}
+ 
+-        var anchorPoint = box.anchorPoint._matMult(rotationMatrix);
+-        var x = anchorPoint.x;
+-        var y = anchorPoint.y;
++},{"../data/bucket":260,"../data/buffer":265,"../lib/debugtext":272,"../util/browser":348,"./vertex_array_object":286,"gl-matrix":154}],278:[function(require,module,exports){
++'use strict';
+ 
+-        var x1 = x + box.x1;
+-        var y1 = y + box.y1 * yStretch;
+-        var x2 = x + box.x2;
+-        var y2 = y + box.y2 * yStretch;
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-        box.bbox0 = x1;
+-        box.bbox1 = y1;
+-        box.bbox2 = x2;
+-        box.bbox3 = y2;
++module.exports = draw;
+ 
+-        if (!allowOverlap) {
+-            var blockingBoxes = this.grid.query(x1, y1, x2, y2);
++function draw(painter, source, layer, coords) {
++    var gl = painter.gl;
++    gl.enable(gl.STENCIL_TEST);
+ 
+-            for (var i = 0; i < blockingBoxes.length; i++) {
+-                var blocking = collisionBoxArray.get(blockingBoxes[i]);
+-                var blockingAnchorPoint = blocking.anchorPoint._matMult(rotationMatrix);
++    var color = util.premultiply(layer.paint['fill-color']);
++    var image = layer.paint['fill-pattern'];
++    var strokeColor = util.premultiply(layer.paint['fill-outline-color']);
++    var opacity = layer.paint['fill-opacity'];
+ 
+-                minPlacementScale = this.getPlacementScale(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking);
+-                if (minPlacementScale >= this.maxScale) {
+-                    return minPlacementScale;
+-                }
+-            }
++    // Draw fill
++    if (image ? !painter.isOpaquePass : painter.isOpaquePass === (color[3] === 1 && opacity === 1)) {
++        // Once we switch to earcut drawing we can pull most of the WebGL setup
++        // outside of this coords loop.
++        for (var i = 0; i < coords.length; i++) {
++            drawFill(painter, source, layer, coords[i]);
+         }
++    }
+ 
+-        if (avoidEdges) {
+-            var rotatedCollisionBox;
+-
+-            if (this.angle) {
+-                var reverseRotationMatrix = this.reverseRotationMatrix;
+-                var tl = new Point(box.x1, box.y1).matMult(reverseRotationMatrix);
+-                var tr = new Point(box.x2, box.y1).matMult(reverseRotationMatrix);
+-                var bl = new Point(box.x1, box.y2).matMult(reverseRotationMatrix);
+-                var br = new Point(box.x2, box.y2).matMult(reverseRotationMatrix);
++    // Draw stroke
++    if (!painter.isOpaquePass && layer.paint['fill-antialias']) {
++        if (strokeColor || !layer.paint['fill-pattern']) {
++            var outlineProgram = painter.useProgram('outline');
++            painter.lineWidth(2);
++            painter.depthMask(false);
+ 
+-                rotatedCollisionBox = this.tempCollisionBox;
+-                rotatedCollisionBox.anchorPointX = box.anchorPoint.x;
+-                rotatedCollisionBox.anchorPointY = box.anchorPoint.y;
+-                rotatedCollisionBox.x1 = Math.min(tl.x, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.y1 = Math.min(tl.y, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.x2 = Math.max(tl.x, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.y2 = Math.max(tl.y, tr.x, bl.x, br.x);
+-                rotatedCollisionBox.maxScale = box.maxScale;
++            if (strokeColor) {
++                // If we defined a different color for the fill outline, we are
++                // going to ignore the bits in 0x07 and just care about the global
++                // clipping mask.
++                painter.setDepthSublayer(2);
+             } else {
+-                rotatedCollisionBox = box;
++                // Otherwise, we only want to drawFill the antialiased parts that are
++                // *outside* the current shape. This is important in case the fill
++                // or stroke color is translucent. If we wouldn't clip to outside
++                // the current shape, some pixels from the outline stroke overlapped
++                // the (non-antialiased) fill.
++                painter.setDepthSublayer(0);
++            }
++            gl.uniform2f(outlineProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
++            gl.uniform4fv(outlineProgram.u_color, strokeColor ? strokeColor : color);
++            gl.uniform1f(outlineProgram.u_opacity, opacity);
++
++            for (var j = 0; j < coords.length; j++) {
++                drawStroke(painter, source, layer, coords[j]);
+             }
++        } else {
++            var outlinePatternProgram = painter.useProgram('outlinepattern');
++            painter.lineWidth(2);
++            painter.depthMask(false);
++            // Otherwise, we only want to drawFill the antialiased parts that are
++            // *outside* the current shape. This is important in case the fill
++            // or stroke color is translucent. If we wouldn't clip to outside
++            // the current shape, some pixels from the outline stroke overlapped
++            // the (non-antialiased) fill.
++            painter.setDepthSublayer(0);
++            gl.uniform2f(outlinePatternProgram.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
+ 
+-            for (var k = 0; k < this.edges.length; k++) {
+-                var edgeBox = this.edges[k];
+-                minPlacementScale = this.getPlacementScale(minPlacementScale, box.anchorPoint, rotatedCollisionBox, edgeBox.anchorPoint, edgeBox);
+-                if (minPlacementScale >= this.maxScale) {
+-                    return minPlacementScale;
+-                }
++            for (var k = 0; k < coords.length; k++) {
++                drawStroke(painter, source, layer, coords[k]);
+             }
+         }
++
+     }
++}
+ 
+-    return minPlacementScale;
+-};
++function drawFill(painter, source, layer, coord) {
++    var tile = source.getTile(coord);
++    var bucket = tile.getBucket(layer);
++    if (!bucket) return;
++    var bufferGroups = bucket.bufferGroups.fill;
++    if (!bufferGroups) return;
+ 
+-CollisionTile.prototype.queryRenderedSymbols = function(minX, minY, maxX, maxY, scale) {
+-    var sourceLayerFeatures = {};
+-    var result = [];
++    var gl = painter.gl;
+ 
+-    var collisionBoxArray = this.collisionBoxArray;
+-    var rotationMatrix = this.rotationMatrix;
+-    var anchorPoint = new Point(minX, minY)._matMult(rotationMatrix);
++    var color = util.premultiply(layer.paint['fill-color']);
++    var image = layer.paint['fill-pattern'];
++    var opacity = layer.paint['fill-opacity'];
+ 
+-    var queryBox = this.tempCollisionBox;
+-    queryBox.anchorX = anchorPoint.x;
+-    queryBox.anchorY = anchorPoint.y;
+-    queryBox.x1 = 0;
+-    queryBox.y1 = 0;
+-    queryBox.x2 = maxX - minX;
+-    queryBox.y2 = maxY - minY;
+-    queryBox.maxScale = scale;
++    var posMatrix = coord.posMatrix;
++    var translatedPosMatrix = painter.translatePosMatrix(posMatrix, tile, layer.paint['fill-translate'], layer.paint['fill-translate-anchor']);
+ 
+-    // maxScale is stored using a Float32. Convert `scale` to the stored Float32 value.
+-    scale = queryBox.maxScale;
++    // Draw the stencil mask.
++    painter.setDepthSublayer(1);
+ 
+-    var searchBox = [
+-        anchorPoint.x + queryBox.x1 / scale,
+-        anchorPoint.y + queryBox.y1 / scale * this.yStretch,
+-        anchorPoint.x + queryBox.x2 / scale,
+-        anchorPoint.y + queryBox.y2 / scale * this.yStretch
+-    ];
++    // We're only drawFilling to the first seven bits (== support a maximum of
++    // 8 overlapping polygons in one place before we get rendering errors).
++    gl.stencilMask(0x07);
++    gl.clear(gl.STENCIL_BUFFER_BIT);
+ 
+-    var blockingBoxKeys = this.grid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
+-    var blockingBoxKeys2 = this.ignoredGrid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
+-    for (var k = 0; k < blockingBoxKeys2.length; k++) {
+-        blockingBoxKeys.push(blockingBoxKeys2[k]);
+-    }
++    // Draw front facing triangles. Wherever the 0x80 bit is 1, we are
++    // increasing the lower 7 bits by one if the triangle is a front-facing
++    // triangle. This means that all visible polygons should be in CCW
++    // orientation, while all holes (see below) are in CW orientation.
++    painter.enableTileClippingMask(coord);
+ 
+-    for (var i = 0; i < blockingBoxKeys.length; i++) {
+-        var blocking = collisionBoxArray.get(blockingBoxKeys[i]);
++    // When we do a nonzero fill, we count the number of times a pixel is
++    // covered by a counterclockwise polygon, and subtract the number of
++    // times it is "uncovered" by a clockwise polygon.
++    gl.stencilOpSeparate(gl.FRONT, gl.KEEP, gl.KEEP, gl.INCR_WRAP);
++    gl.stencilOpSeparate(gl.BACK, gl.KEEP, gl.KEEP, gl.DECR_WRAP);
+ 
+-        var sourceLayer = blocking.sourceLayerIndex;
+-        var featureIndex = blocking.featureIndex;
+-        if (sourceLayerFeatures[sourceLayer] === undefined) {
+-            sourceLayerFeatures[sourceLayer] = {};
+-        }
++    // When drawFilling a shape, we first drawFill all shapes to the stencil buffer
++    // and incrementing all areas where polygons are
++    gl.colorMask(false, false, false, false);
++    painter.depthMask(false);
+ 
+-        if (!sourceLayerFeatures[sourceLayer][featureIndex]) {
+-            var blockingAnchorPoint = blocking.anchorPoint.matMult(rotationMatrix);
+-            var minPlacementScale = this.getPlacementScale(this.minScale, anchorPoint, queryBox, blockingAnchorPoint, blocking);
+-            if (minPlacementScale >= scale) {
+-                sourceLayerFeatures[sourceLayer][featureIndex] = true;
+-                result.push(blockingBoxKeys[i]);
+-            }
+-        }
+-    }
++    // Draw the actual triangle fan into the stencil buffer.
++    var fillProgram = painter.useProgram('fill');
++    gl.uniformMatrix4fv(fillProgram.u_matrix, false, translatedPosMatrix);
+ 
+-    return result;
+-};
++    for (var i = 0; i < bufferGroups.length; i++) {
++        var group = bufferGroups[i];
++        group.vaos[layer.id].bind(gl, fillProgram, group.layout.vertex, group.layout.element);
++        gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++    }
+ 
+-CollisionTile.prototype.getPlacementScale = function(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking) {
++    // Now that we have the stencil mask in the stencil buffer, we can start
++    // writing to the color buffer.
++    gl.colorMask(true, true, true, true);
++    painter.depthMask(true);
+ 
+-    // Find the lowest scale at which the two boxes can fit side by side without overlapping.
+-    // Original algorithm:
+-    var anchorDiffX = anchorPoint.x - blockingAnchorPoint.x;
+-    var anchorDiffY = anchorPoint.y - blockingAnchorPoint.y;
+-    var s1 = (blocking.x1 - box.x2) / anchorDiffX; // scale at which new box is to the left of old box
+-    var s2 = (blocking.x2 - box.x1) / anchorDiffX; // scale at which new box is to the right of old box
+-    var s3 = (blocking.y1 - box.y2) * this.yStretch / anchorDiffY; // scale at which new box is to the top of old box
+-    var s4 = (blocking.y2 - box.y1) * this.yStretch / anchorDiffY; // scale at which new box is to the bottom of old box
++    // From now on, we don't want to update the stencil buffer anymore.
++    gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
++    gl.stencilMask(0x0);
++    var program;
+ 
+-    if (isNaN(s1) || isNaN(s2)) s1 = s2 = 1;
+-    if (isNaN(s3) || isNaN(s4)) s3 = s4 = 1;
++    if (image) {
++        // Draw texture fill
++        program = painter.useProgram('pattern');
++        setPattern(image, opacity, tile, coord, painter, program);
+ 
+-    var collisionFreeScale = Math.min(Math.max(s1, s2), Math.max(s3, s4));
+-    var blockingMaxScale = blocking.maxScale;
+-    var boxMaxScale = box.maxScale;
++        gl.activeTexture(gl.TEXTURE0);
++        painter.spriteAtlas.bind(gl, true);
+ 
+-    if (collisionFreeScale > blockingMaxScale) {
+-        // After a box's maxScale the label has shrunk enough that the box is no longer needed to cover it,
+-        // so unblock the new box at the scale that the old box disappears.
+-        collisionFreeScale = blockingMaxScale;
+-    }
++        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
+ 
+-    if (collisionFreeScale > boxMaxScale) {
+-        // If the box can only be shown after it is visible, then the box can never be shown.
+-        // But the label can be shown after this box is not visible.
+-        collisionFreeScale = boxMaxScale;
++    } else {
++        // Draw filling rectangle.
++        program = painter.useProgram('fill');
++        gl.uniform4fv(fillProgram.u_color, color);
++        gl.uniform1f(fillProgram.u_opacity, opacity);
++        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
+     }
+ 
+-    if (collisionFreeScale > minPlacementScale &&
+-            collisionFreeScale >= blocking.placementScale) {
+-        // If this collision occurs at a lower scale than previously found collisions
+-        // and the collision occurs while the other label is visible
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+ 
+-        // this this is the lowest scale at which the label won't collide with anything
+-        minPlacementScale = collisionFreeScale;
+-    }
++    // Only draw regions that we marked
++    gl.stencilFunc(gl.NOTEQUAL, 0x0, 0x07);
+ 
+-    return minPlacementScale;
+-};
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
+ 
++    gl.stencilMask(0x00);
++}
+ 
+-/**
+- * Remember this collisionFeature and what scale it was placed at to block
+- * later features from overlapping with it.
+- *
+- * @param {CollisionFeature} collisionFeature
+- * @param {number} minPlacementScale
+- * @private
+- */
+-CollisionTile.prototype.insertCollisionFeature = function(collisionFeature, minPlacementScale, ignorePlacement) {
++function drawStroke(painter, source, layer, coord) {
++    var tile = source.getTile(coord);
++    var bucket = tile.getBucket(layer);
++    if (!bucket) return;
+ 
+-    var grid = ignorePlacement ? this.ignoredGrid : this.grid;
+-    var collisionBoxArray = this.collisionBoxArray;
++    var gl = painter.gl;
++    var bufferGroups = bucket.bufferGroups.fill;
+ 
+-    for (var k = collisionFeature.boxStartIndex; k < collisionFeature.boxEndIndex; k++) {
+-        var box = collisionBoxArray.get(k);
+-        box.placementScale = minPlacementScale;
+-        if (minPlacementScale < this.maxScale) {
+-            grid.insert(k, box.bbox0, box.bbox1, box.bbox2, box.bbox3);
+-        }
+-    }
+-};
++    var image = layer.paint['fill-pattern'];
++    var opacity = layer.paint['fill-opacity'];
++    var program = image ? painter.useProgram('outlinepattern') : painter.useProgram('outline');
+ 
+-},{"../data/bucket":247,"grid-index":373,"point-geometry":404}],309:[function(require,module,exports){
+-'use strict';
++    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
++        coord.posMatrix,
++        tile,
++        layer.paint['fill-translate'],
++        layer.paint['fill-translate-anchor']
++    ));
+ 
+-var interpolate = require('../util/interpolate');
+-var Anchor = require('../symbol/anchor');
+-var checkMaxAngle = require('./check_max_angle');
++    if (image) { setPattern(image, opacity, tile, coord, painter, program); }
+ 
+-module.exports = getAnchors;
++    painter.enableTileClippingMask(coord);
+ 
+-function getAnchors(line, spacing, maxAngle, shapedText, shapedIcon, glyphSize, boxScale, overscaling, tileExtent) {
++    for (var k = 0; k < bufferGroups.length; k++) {
++        var group = bufferGroups[k];
++        group.secondVaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element2);
++        gl.drawElements(gl.LINES, group.layout.element2.length * 2, gl.UNSIGNED_SHORT, 0);
++    }
++}
+ 
+-    // Resample a line to get anchor points for labels and check that each
+-    // potential label passes text-max-angle check and has enough froom to fit
+-    // on the line.
+ 
+-    var angleWindowSize = shapedText ?
+-        3 / 5 * glyphSize * boxScale :
+-        0;
++function setPattern(image, opacity, tile, coord, painter, program) {
++    var gl = painter.gl;
+ 
+-    var labelLength = Math.max(
+-        shapedText ? shapedText.right - shapedText.left : 0,
+-        shapedIcon ? shapedIcon.right - shapedIcon.left : 0);
++    var imagePosA = painter.spriteAtlas.getPosition(image.from, true);
++    var imagePosB = painter.spriteAtlas.getPosition(image.to, true);
++    if (!imagePosA || !imagePosB) return;
+ 
+-    // Is the line continued from outside the tile boundary?
+-    var isLineContinued = line[0].x === 0 || line[0].x === tileExtent || line[0].y === 0 || line[0].y === tileExtent;
+ 
+-    // Is the label long, relative to the spacing?
+-    // If so, adjust the spacing so there is always a minimum space of `spacing / 4` between label edges.
+-    if (spacing - labelLength * boxScale  < spacing / 4) {
+-        spacing = labelLength * boxScale + spacing / 4;
+-    }
++    gl.uniform1i(program.u_image, 0);
++    gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
++    gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
++    gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
++    gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
++    gl.uniform1f(program.u_opacity, opacity);
++    gl.uniform1f(program.u_mix, image.t);
+ 
+-    // Offset the first anchor by:
+-    // Either half the label length plus a fixed extra offset if the line is not continued
+-    // Or half the spacing if the line is continued.
++    var imageSizeScaledA = [
++        (imagePosA.size[0] * image.fromScale),
++        (imagePosA.size[1] * image.fromScale)
++    ];
++    var imageSizeScaledB = [
++        (imagePosB.size[0] * image.toScale),
++        (imagePosB.size[1] * image.toScale)
++    ];
+ 
+-    // For non-continued lines, add a bit of fixed extra offset to avoid collisions at T intersections.
+-    var fixedExtraOffset = glyphSize * 2;
++    gl.uniform2fv(program.u_patternscale_a, [
++        1 / pixelsToTileUnits(tile, imageSizeScaledA[0], painter.transform.tileZoom),
++        1 / pixelsToTileUnits(tile, imageSizeScaledA[1], painter.transform.tileZoom)
++    ]);
+ 
+-    var offset = !isLineContinued ?
+-        ((labelLength / 2 + fixedExtraOffset) * boxScale * overscaling) % spacing :
+-        (spacing / 2 * overscaling) % spacing;
++    gl.uniform2fv(program.u_patternscale_b, [
++        1 / pixelsToTileUnits(tile, imageSizeScaledB[0], painter.transform.tileZoom),
++        1 / pixelsToTileUnits(tile, imageSizeScaledB[1], painter.transform.tileZoom)
++    ]);
+ 
+-    return resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength * boxScale, isLineContinued, false, tileExtent);
+-}
++    var tileSizeAtNearestZoom = tile.tileSize * Math.pow(2, painter.transform.tileZoom - tile.coord.z);
+ 
++    // shift images to match at tile boundaries
++    var offsetAx = ((tileSizeAtNearestZoom / imageSizeScaledA[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
++    var offsetAy = ((tileSizeAtNearestZoom / imageSizeScaledA[1]) % 1) * tile.coord.y;
+ 
+-function resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, placeAtMiddle, tileExtent) {
++    var offsetBx = ((tileSizeAtNearestZoom / imageSizeScaledB[0]) % 1) * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
++    var offsetBy = ((tileSizeAtNearestZoom / imageSizeScaledB[1]) % 1) * tile.coord.y;
+ 
+-    var halfLabelLength = labelLength / 2;
+-    var lineLength = 0;
+-    for (var k = 0; k < line.length - 1; k++) {
+-        lineLength += line[k].dist(line[k + 1]);
+-    }
++    gl.uniform2fv(program.u_offset_a, [offsetAx, offsetAy]);
++    gl.uniform2fv(program.u_offset_b, [offsetBx, offsetBy]);
+ 
+-    var distance = 0,
+-        markedDistance = offset - spacing;
++    gl.activeTexture(gl.TEXTURE0);
++    painter.spriteAtlas.bind(gl, true);
++}
+ 
+-    var anchors = [];
++},{"../source/pixels_to_tile_units":290,"../util/util":362}],279:[function(require,module,exports){
++'use strict';
+ 
+-    for (var i = 0; i < line.length - 1; i++) {
++var browser = require('../util/browser');
++var mat2 = require('gl-matrix').mat2;
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-        var a = line[i],
+-            b = line[i + 1];
++/**
++ * Draw a line. Under the hood this will read elements from
++ * a tile, dash textures from a lineAtlas, and style properties from a layer.
++ * @param {Object} painter
++ * @param {Object} layer
++ * @param {Object} posMatrix
++ * @param {Tile} tile
++ * @returns {undefined} draws with the painter
++ * @private
++ */
++module.exports = function drawLine(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
++    painter.setDepthSublayer(0);
++    painter.depthMask(false);
+ 
+-        var segmentDist = a.dist(b),
+-            angle = b.angleTo(a);
++    var gl = painter.gl;
++    gl.enable(gl.STENCIL_TEST);
+ 
+-        while (markedDistance + spacing < distance + segmentDist) {
+-            markedDistance += spacing;
++    // don't draw zero-width lines
++    if (layer.paint['line-width'] <= 0) return;
+ 
+-            var t = (markedDistance - distance) / segmentDist,
+-                x = interpolate(a.x, b.x, t),
+-                y = interpolate(a.y, b.y, t);
++    // the distance over which the line edge fades out.
++    // Retina devices need a smaller distance to avoid aliasing.
++    var antialiasing = 1 / browser.devicePixelRatio;
+ 
+-            // Check that the point is within the tile boundaries and that
+-            // the label would fit before the beginning and end of the line
+-            // if placed at this point.
+-            if (x >= 0 && x < tileExtent && y >= 0 && y < tileExtent &&
+-                    markedDistance - halfLabelLength >= 0 &&
+-                    markedDistance + halfLabelLength <= lineLength) {
+-                var anchor = new Anchor(x, y, angle, i)._round();
++    var blur = layer.paint['line-blur'] + antialiasing;
++    var edgeWidth = layer.paint['line-width'] / 2;
++    var inset = -1;
++    var offset = 0;
++    var shift = 0;
+ 
+-                if (!angleWindowSize || checkMaxAngle(line, anchor, labelLength, angleWindowSize, maxAngle)) {
+-                    anchors.push(anchor);
+-                }
+-            }
+-        }
++    if (layer.paint['line-gap-width'] > 0) {
++        inset = layer.paint['line-gap-width'] / 2 + antialiasing * 0.5;
++        edgeWidth = layer.paint['line-width'];
+ 
+-        distance += segmentDist;
++        // shift outer lines half a pixel towards the middle to eliminate the crack
++        offset = inset - antialiasing / 2;
+     }
+ 
+-    if (!placeAtMiddle && !anchors.length && !isLineContinued) {
+-        // The first attempt at finding anchors at which labels can be placed failed.
+-        // Try again, but this time just try placing one anchor at the middle of the line.
+-        // This has the most effect for short lines in overscaled tiles, since the
+-        // initial offset used in overscaled tiles is calculated to align labels with positions in
+-        // parent tiles instead of placing the label as close to the beginning as possible.
+-        anchors = resample(line, distance / 2, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, true, tileExtent);
+-    }
++    var outset = offset + edgeWidth + antialiasing / 2 + shift;
++    var color = util.premultiply(layer.paint['line-color']);
+ 
+-    return anchors;
+-}
++    var tr = painter.transform;
+ 
+-},{"../symbol/anchor":303,"../util/interpolate":343,"./check_max_angle":304}],310:[function(require,module,exports){
+-'use strict';
++    var antialiasingMatrix = mat2.create();
++    mat2.scale(antialiasingMatrix, antialiasingMatrix, [1, Math.cos(tr._pitch)]);
++    mat2.rotate(antialiasingMatrix, antialiasingMatrix, painter.transform.angle);
+ 
+-var ShelfPack = require('shelf-pack');
++    // calculate how much longer the real world distance is at the top of the screen
++    // than at the middle of the screen.
++    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
++    var x = tr.height / 2 * Math.tan(tr._pitch);
++    var extra = (topedgelength + x) / topedgelength - 1;
+ 
+-module.exports = GlyphAtlas;
+-function GlyphAtlas(width, height) {
+-    this.width = width;
+-    this.height = height;
++    var dasharray = layer.paint['line-dasharray'];
++    var image = layer.paint['line-pattern'];
++    var program, posA, posB, imagePosA, imagePosB;
+ 
+-    this.bin = new ShelfPack(width, height);
+-    this.index = {};
+-    this.ids = {};
+-    this.data = new Uint8Array(width * height);
+-}
++    if (dasharray) {
++        program = painter.useProgram('linesdfpattern');
+ 
+-GlyphAtlas.prototype.getGlyphs = function() {
+-    var glyphs = {},
+-        split,
+-        name,
+-        id;
++        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
++        gl.uniform1f(program.u_blur, blur);
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
+ 
+-    for (var key in this.ids) {
+-        split = key.split('#');
+-        name = split[0];
+-        id = split[1];
++        posA = painter.lineAtlas.getDash(dasharray.from, layer.layout['line-cap'] === 'round');
++        posB = painter.lineAtlas.getDash(dasharray.to, layer.layout['line-cap'] === 'round');
+ 
+-        if (!glyphs[name]) glyphs[name] = [];
+-        glyphs[name].push(id);
+-    }
++        gl.uniform1i(program.u_image, 0);
++        gl.activeTexture(gl.TEXTURE0);
++        painter.lineAtlas.bind(gl);
+ 
+-    return glyphs;
+-};
++        gl.uniform1f(program.u_tex_y_a, posA.y);
++        gl.uniform1f(program.u_tex_y_b, posB.y);
++        gl.uniform1f(program.u_mix, dasharray.t);
++        gl.uniform1f(program.u_extra, extra);
++        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
++        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
+ 
+-GlyphAtlas.prototype.getRects = function() {
+-    var rects = {},
+-        split,
+-        name,
+-        id;
++    } else if (image) {
++        imagePosA = painter.spriteAtlas.getPosition(image.from, true);
++        imagePosB = painter.spriteAtlas.getPosition(image.to, true);
++        if (!imagePosA || !imagePosB) return;
+ 
+-    for (var key in this.ids) {
+-        split = key.split('#');
+-        name = split[0];
+-        id = split[1];
++        program = painter.useProgram('linepattern');
+ 
+-        if (!rects[name]) rects[name] = {};
+-        rects[name][id] = this.index[key];
+-    }
++        gl.uniform1i(program.u_image, 0);
++        gl.activeTexture(gl.TEXTURE0);
++        painter.spriteAtlas.bind(gl, true);
+ 
+-    return rects;
+-};
++        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
++        gl.uniform1f(program.u_blur, blur);
++        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
++        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
++        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
++        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
++        gl.uniform1f(program.u_fade, image.t);
++        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
++        gl.uniform1f(program.u_extra, extra);
++        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
++        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
+ 
++    } else {
++        program = painter.useProgram('line');
+ 
+-GlyphAtlas.prototype.addGlyph = function(id, name, glyph, buffer) {
+-    if (!glyph) {
+-        // console.warn('missing glyph', code, String.fromCharCode(code));
+-        return null;
++        gl.uniform2fv(program.u_linewidth, [ outset, inset ]);
++        gl.uniform1f(program.u_blur, blur);
++        gl.uniform1f(program.u_extra, extra);
++        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
++        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
+     }
+-    var key = name + "#" + glyph.id;
+ 
+-    // The glyph is already in this texture.
+-    if (this.index[key]) {
+-        if (this.ids[key].indexOf(id) < 0) {
+-            this.ids[key].push(id);
+-        }
+-        return this.index[key];
+-    }
++    for (var k = 0; k < coords.length; k++) {
++        var coord = coords[k];
++        var tile = source.getTile(coord);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bufferGroups = bucket.bufferGroups.line;
++        if (!bufferGroups) continue;
+ 
+-    // The glyph bitmap has zero width.
+-    if (!glyph.bitmap) {
+-        return null;
+-    }
++        painter.enableTileClippingMask(coord);
+ 
+-    var bufferedWidth = glyph.width + buffer * 2;
+-    var bufferedHeight = glyph.height + buffer * 2;
++        // set uniforms that are different for each tile
++        var posMatrix = painter.translatePosMatrix(coord.posMatrix, tile, layer.paint['line-translate'], layer.paint['line-translate-anchor']);
++        gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+ 
+-    // Add a 1px border around every image.
+-    var padding = 1;
+-    var packWidth = bufferedWidth + 2 * padding;
+-    var packHeight = bufferedHeight + 2 * padding;
++        var ratio = 1 / pixelsToTileUnits(tile, 1, painter.transform.zoom);
+ 
+-    // Increase to next number divisible by 4, but at least 1.
+-    // This is so we can scale down the texture coordinates and pack them
+-    // into 2 bytes rather than 4 bytes.
+-    packWidth += (4 - packWidth % 4);
+-    packHeight += (4 - packHeight % 4);
++        if (dasharray) {
++            var widthA = posA.width * dasharray.fromScale;
++            var widthB = posB.width * dasharray.toScale;
++            var scaleA = [1 / pixelsToTileUnits(tile, widthA, painter.transform.tileZoom), -posA.height / 2];
++            var scaleB = [1 / pixelsToTileUnits(tile, widthB, painter.transform.tileZoom), -posB.height / 2];
++            var gamma = painter.lineAtlas.width / (Math.min(widthA, widthB) * 256 * browser.devicePixelRatio) / 2;
++            gl.uniform1f(program.u_ratio, ratio);
++            gl.uniform2fv(program.u_patternscale_a, scaleA);
++            gl.uniform2fv(program.u_patternscale_b, scaleB);
++            gl.uniform1f(program.u_sdfgamma, gamma);
+ 
+-    var rect = this.bin.packOne(packWidth, packHeight);
+-    if (!rect) {
+-        this.resize();
+-        rect = this.bin.packOne(packWidth, packHeight);
+-    }
+-    if (!rect) {
+-        console.warn('glyph bitmap overflow');
+-        return null;
+-    }
++        } else if (image) {
++            gl.uniform1f(program.u_ratio, ratio);
++            gl.uniform2fv(program.u_pattern_size_a, [
++                pixelsToTileUnits(tile, imagePosA.size[0] * image.fromScale, painter.transform.tileZoom),
++                imagePosB.size[1]
++            ]);
++            gl.uniform2fv(program.u_pattern_size_b, [
++                pixelsToTileUnits(tile, imagePosB.size[0] * image.toScale, painter.transform.tileZoom),
++                imagePosB.size[1]
++            ]);
+ 
+-    this.index[key] = rect;
+-    this.ids[key] = [id];
++        } else {
++            gl.uniform1f(program.u_ratio, ratio);
++        }
+ 
+-    var target = this.data;
+-    var source = glyph.bitmap;
+-    for (var y = 0; y < bufferedHeight; y++) {
+-        var y1 = this.width * (rect.y + y + padding) + rect.x + padding;
+-        var y2 = bufferedWidth * y;
+-        for (var x = 0; x < bufferedWidth; x++) {
+-            target[y1 + x] = source[y2 + x];
++        for (var i = 0; i < bufferGroups.length; i++) {
++            var group = bufferGroups[i];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+         }
+     }
+ 
+-    this.dirty = true;
+-
+-    return rect;
+ };
+ 
+-GlyphAtlas.prototype.resize = function() {
+-    var origw = this.width,
+-        origh = this.height;
++},{"../source/pixels_to_tile_units":290,"../util/browser":348,"../util/util":362,"gl-matrix":154}],280:[function(require,module,exports){
++'use strict';
+ 
+-    // For now, don't grow the atlas beyond 1024x1024 because of how
+-    // texture coords pack into unsigned byte in symbol bucket.
+-    if (origw > 512 || origh > 512) return;
++var util = require('../util/util');
++var StructArrayType = require('../util/struct_array');
+ 
+-    if (this.texture) {
+-        if (this.gl) {
+-            this.gl.deleteTexture(this.texture);
+-        }
+-        this.texture = null;
+-    }
++module.exports = drawRaster;
+ 
+-    this.width *= 2;
+-    this.height *= 2;
+-    this.bin.resize(this.width, this.height);
++function drawRaster(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
+ 
+-    var buf = new ArrayBuffer(this.width * this.height),
+-        src, dst;
+-    for (var i = 0; i < origh; i++) {
+-        src = new Uint8Array(this.data.buffer, origh * i, origw);
+-        dst = new Uint8Array(buf, origh * i * 2, origw);
+-        dst.set(src);
+-    }
+-    this.data = new Uint8Array(buf);
+-};
++    var gl = painter.gl;
+ 
+-GlyphAtlas.prototype.bind = function(gl) {
+-    this.gl = gl;
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, this.width, this.height, 0, gl.ALPHA, gl.UNSIGNED_BYTE, null);
++    gl.enable(gl.DEPTH_TEST);
++    painter.depthMask(true);
+ 
+-    } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-    }
+-};
++    // Change depth function to prevent double drawing in areas where tiles overlap.
++    gl.depthFunc(gl.LESS);
+ 
+-GlyphAtlas.prototype.updateTexture = function(gl) {
+-    this.bind(gl);
+-    if (this.dirty) {
+-        gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.ALPHA, gl.UNSIGNED_BYTE, this.data);
+-        this.dirty = false;
++    var minTileZ = coords.length && coords[0].z;
++
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
++        // set the lower zoom level to sublayer 0, and higher zoom levels to higher sublayers
++        painter.setDepthSublayer(coord.z - minTileZ);
++        drawRasterTile(painter, source, layer, coord);
+     }
+-};
+ 
+-},{"shelf-pack":406}],311:[function(require,module,exports){
+-'use strict';
++    gl.depthFunc(gl.LEQUAL);
++}
+ 
+-var normalizeURL = require('../util/mapbox').normalizeGlyphsURL;
+-var getArrayBuffer = require('../util/ajax').getArrayBuffer;
+-var Glyphs = require('../util/glyphs');
+-var GlyphAtlas = require('../symbol/glyph_atlas');
+-var Protobuf = require('pbf');
++drawRaster.RasterBoundsArray = new StructArrayType({
++    members: [
++        { name: 'a_pos', type: 'Int16', components: 2 },
++        { name: 'a_texture_pos', type: 'Int16', components: 2 }
++    ]
++});
+ 
+-module.exports = GlyphSource;
++function drawRasterTile(painter, source, layer, coord) {
+ 
+-/**
+- * A glyph source has a URL from which to load new glyphs and manages
+- * GlyphAtlases in which to store glyphs used by the requested fontstacks
+- * and ranges.
+- *
+- * @param {string} url glyph template url
+- * @private
+- */
+-function GlyphSource(url) {
+-    this.url = url && normalizeURL(url);
+-    this.atlases = {};
+-    this.stacks = {};
+-    this.loading = {};
+-}
++    var gl = painter.gl;
+ 
+-GlyphSource.prototype.getSimpleGlyphs = function(fontstack, glyphIDs, uid, callback) {
+-    if (this.stacks[fontstack] === undefined) {
+-        this.stacks[fontstack] = {};
+-    }
+-    if (this.atlases[fontstack] === undefined) {
+-        this.atlases[fontstack] = new GlyphAtlas(128, 128);
+-    }
++    gl.disable(gl.STENCIL_TEST);
+ 
+-    var glyphs = {};
+-    var stack = this.stacks[fontstack];
+-    var atlas = this.atlases[fontstack];
++    var tile = source.getTile(coord);
++    var posMatrix = painter.transform.calculatePosMatrix(coord, source.maxzoom);
+ 
+-    // the number of pixels the sdf bitmaps are padded by
+-    var buffer = 3;
++    var program = painter.useProgram('raster');
++    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
+ 
+-    var missing = {};
+-    var remaining = 0;
+-    var range;
++    // color parameters
++    gl.uniform1f(program.u_brightness_low, layer.paint['raster-brightness-min']);
++    gl.uniform1f(program.u_brightness_high, layer.paint['raster-brightness-max']);
++    gl.uniform1f(program.u_saturation_factor, saturationFactor(layer.paint['raster-saturation']));
++    gl.uniform1f(program.u_contrast_factor, contrastFactor(layer.paint['raster-contrast']));
++    gl.uniform3fv(program.u_spin_weights, spinWeights(layer.paint['raster-hue-rotate']));
+ 
+-    for (var i = 0; i < glyphIDs.length; i++) {
+-        var glyphID = glyphIDs[i];
+-        range = Math.floor(glyphID / 256);
++    var parentTile = tile.source && tile.source._pyramid.findLoadedParent(coord, 0, {}),
++        opacities = getOpacities(tile, parentTile, layer, painter.transform);
+ 
+-        if (stack[range]) {
+-            var glyph = stack[range].glyphs[glyphID];
+-            var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
+-            if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
+-        } else {
+-            if (missing[range] === undefined) {
+-                missing[range] = [];
+-                remaining++;
+-            }
+-            missing[range].push(glyphID);
+-        }
+-    }
++    var parentScaleBy, parentTL;
+ 
+-    if (!remaining) callback(undefined, glyphs, fontstack);
++    gl.activeTexture(gl.TEXTURE0);
++    gl.bindTexture(gl.TEXTURE_2D, tile.texture);
+ 
+-    var onRangeLoaded = function(err, range, data) {
+-        // TODO not be silent about errors
+-        if (!err) {
+-            var stack = this.stacks[fontstack][range] = data.stacks[0];
+-            for (var i = 0; i < missing[range].length; i++) {
+-                var glyphID = missing[range][i];
+-                var glyph = stack.glyphs[glyphID];
+-                var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
+-                if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
+-            }
+-        }
+-        remaining--;
+-        if (!remaining) callback(undefined, glyphs, fontstack);
+-    }.bind(this);
++    if (parentTile) {
++        gl.activeTexture(gl.TEXTURE1);
++        gl.bindTexture(gl.TEXTURE_2D, parentTile.texture);
+ 
+-    for (var r in missing) {
+-        this.loadRange(fontstack, r, onRangeLoaded);
++        parentScaleBy = Math.pow(2, parentTile.coord.z - tile.coord.z);
++        parentTL = [tile.coord.x * parentScaleBy % 1, tile.coord.y * parentScaleBy % 1];
++    } else {
++        opacities[1] = 0;
+     }
+-};
+ 
+-// A simplified representation of the glyph containing only the properties needed for shaping.
+-function SimpleGlyph(glyph, rect, buffer) {
+-    var padding = 1;
+-    this.advance = glyph.advance;
+-    this.left = glyph.left - buffer - padding;
+-    this.top = glyph.top + buffer + padding;
+-    this.rect = rect;
++    // cross-fade parameters
++    gl.uniform2fv(program.u_tl_parent, parentTL || [0, 0]);
++    gl.uniform1f(program.u_scale_parent, parentScaleBy || 1);
++    gl.uniform1f(program.u_buffer_scale, 1);
++    gl.uniform1f(program.u_opacity0, opacities[0]);
++    gl.uniform1f(program.u_opacity1, opacities[1]);
++    gl.uniform1i(program.u_image0, 0);
++    gl.uniform1i(program.u_image1, 1);
++
++    var buffer = tile.boundsBuffer || painter.rasterBoundsBuffer;
++    var vao = tile.boundsVAO || painter.rasterBoundsVAO;
++    vao.bind(gl, program, buffer);
++    gl.drawArrays(gl.TRIANGLE_STRIP, 0, buffer.length);
+ }
+ 
+-GlyphSource.prototype.loadRange = function(fontstack, range, callback) {
+-    if (range * 256 > 65535) return callback('glyphs > 65535 not supported');
++function spinWeights(angle) {
++    angle *= Math.PI / 180;
++    var s = Math.sin(angle);
++    var c = Math.cos(angle);
++    return [
++        (2 * c + 1) / 3,
++        (-Math.sqrt(3) * s - c + 1) / 3,
++        (Math.sqrt(3) * s - c + 1) / 3
++    ];
++}
+ 
+-    if (this.loading[fontstack] === undefined) {
+-        this.loading[fontstack] = {};
+-    }
+-    var loading = this.loading[fontstack];
++function contrastFactor(contrast) {
++    return contrast > 0 ?
++        1 / (1 - contrast) :
++        1 + contrast;
++}
+ 
+-    if (loading[range]) {
+-        loading[range].push(callback);
+-    } else {
+-        loading[range] = [callback];
++function saturationFactor(saturation) {
++    return saturation > 0 ?
++        1 - 1 / (1.001 - saturation) :
++        -saturation;
++}
+ 
+-        var rangeName = (range * 256) + '-' + (range * 256 + 255);
+-        var url = glyphUrl(fontstack, rangeName, this.url);
++function getOpacities(tile, parentTile, layer, transform) {
++    var opacity = [1, 0];
++    var fadeDuration = layer.paint['raster-fade-duration'];
+ 
+-        getArrayBuffer(url, function(err, data) {
+-            var glyphs = !err && new Glyphs(new Protobuf(new Uint8Array(data)));
+-            for (var i = 0; i < loading[range].length; i++) {
+-                loading[range][i](err, range, glyphs);
+-            }
+-            delete loading[range];
+-        });
+-    }
+-};
++    if (tile.source && fadeDuration > 0) {
++        var now = new Date().getTime();
+ 
+-GlyphSource.prototype.getGlyphAtlas = function(fontstack) {
+-    return this.atlases[fontstack];
+-};
++        var sinceTile = (now - tile.timeAdded) / fadeDuration;
++        var sinceParent = parentTile ? (now - parentTile.timeAdded) / fadeDuration : -1;
+ 
+-/**
+- * Use CNAME sharding to load a specific glyph range over a randomized
+- * but consistent subdomain.
+- * @param {string} fontstack comma-joined fonts
+- * @param {string} range comma-joined range
+- * @param {url} url templated url
+- * @param {string} [subdomains=abc] subdomains as a string where each letter is one.
+- * @returns {string} a url to load that section of glyphs
+- * @private
+- */
+-function glyphUrl(fontstack, range, url, subdomains) {
+-    subdomains = subdomains || 'abc';
++        var idealZ = tile.source._pyramid.coveringZoomLevel(transform);
++        var parentFurther = parentTile ? Math.abs(parentTile.coord.z - idealZ) > Math.abs(tile.coord.z - idealZ) : false;
+ 
+-    return url
+-        .replace('{s}', subdomains[fontstack.length % subdomains.length])
+-        .replace('{fontstack}', fontstack)
+-        .replace('{range}', range);
++        if (!parentTile || parentFurther) {
++            // if no parent or parent is older
++            opacity[0] = util.clamp(sinceTile, 0, 1);
++            opacity[1] = 1 - opacity[0];
++        } else {
++            // parent is younger, zooming out
++            opacity[0] = util.clamp(1 - sinceParent, 0, 1);
++            opacity[1] = 1 - opacity[0];
++        }
++    }
++
++    var op = layer.paint['raster-opacity'];
++    opacity[0] *= op;
++    opacity[1] *= op;
++
++    return opacity;
+ }
+ 
+-},{"../symbol/glyph_atlas":310,"../util/ajax":334,"../util/glyphs":342,"../util/mapbox":346,"pbf":402}],312:[function(require,module,exports){
++},{"../util/struct_array":360,"../util/util":362}],281:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = function (features, textFeatures, geometries) {
+-
+-    var leftIndex = {},
+-        rightIndex = {},
+-        mergedFeatures = [],
+-        mergedGeom = [],
+-        mergedTexts = [],
+-        mergedIndex = 0,
+-        k;
++var browser = require('../util/browser');
++var drawCollisionDebug = require('./draw_collision_debug');
++var util = require('../util/util');
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
+ 
+-    function add(k) {
+-        mergedFeatures.push(features[k]);
+-        mergedGeom.push(geometries[k]);
+-        mergedTexts.push(textFeatures[k]);
+-        mergedIndex++;
+-    }
+ 
+-    function mergeFromRight(leftKey, rightKey, geom) {
+-        var i = rightIndex[leftKey];
+-        delete rightIndex[leftKey];
+-        rightIndex[rightKey] = i;
++module.exports = drawSymbols;
+ 
+-        mergedGeom[i][0].pop();
+-        mergedGeom[i][0] = mergedGeom[i][0].concat(geom[0]);
+-        return i;
+-    }
++function drawSymbols(painter, source, layer, coords) {
++    if (painter.isOpaquePass) return;
+ 
+-    function mergeFromLeft(leftKey, rightKey, geom) {
+-        var i = leftIndex[rightKey];
+-        delete leftIndex[rightKey];
+-        leftIndex[leftKey] = i;
++    var drawAcrossEdges = !(layer.layout['text-allow-overlap'] || layer.layout['icon-allow-overlap'] ||
++        layer.layout['text-ignore-placement'] || layer.layout['icon-ignore-placement']);
+ 
+-        mergedGeom[i][0].shift();
+-        mergedGeom[i][0] = geom[0].concat(mergedGeom[i][0]);
+-        return i;
+-    }
++    var gl = painter.gl;
+ 
+-    function getKey(text, geom, onRight) {
+-        var point = onRight ? geom[0][geom[0].length - 1] : geom[0][0];
+-        return text + ':' + point.x + ':' + point.y;
++    // Disable the stencil test so that labels aren't clipped to tile boundaries.
++    //
++    // Layers with features that may be drawn overlapping aren't clipped. These
++    // layers are sorted in the y direction, and to draw the correct ordering near
++    // tile edges the icons are included in both tiles and clipped when drawing.
++    if (drawAcrossEdges) {
++        gl.disable(gl.STENCIL_TEST);
++    } else {
++        gl.enable(gl.STENCIL_TEST);
+     }
+ 
+-    for (k = 0; k < features.length; k++) {
+-        var geom = geometries[k],
+-            text = textFeatures[k];
++    painter.setDepthSublayer(0);
++    painter.depthMask(false);
++    gl.disable(gl.DEPTH_TEST);
+ 
+-        if (!text) {
+-            add(k);
+-            continue;
+-        }
++    drawLayerSymbols(painter, source, layer, coords, false,
++            layer.paint['icon-translate'],
++            layer.paint['icon-translate-anchor'],
++            layer.layout['icon-rotation-alignment'],
++            layer.layout['icon-size'],
++            layer.paint['icon-halo-width'],
++            layer.paint['icon-halo-color'],
++            layer.paint['icon-halo-blur'],
++            layer.paint['icon-opacity'],
++            layer.paint['icon-color']);
+ 
+-        var leftKey = getKey(text, geom),
+-            rightKey = getKey(text, geom, true);
++    drawLayerSymbols(painter, source, layer, coords, true,
++            layer.paint['text-translate'],
++            layer.paint['text-translate-anchor'],
++            layer.layout['text-rotation-alignment'],
++            layer.layout['text-size'],
++            layer.paint['text-halo-width'],
++            layer.paint['text-halo-color'],
++            layer.paint['text-halo-blur'],
++            layer.paint['text-opacity'],
++            layer.paint['text-color']);
+ 
+-        if ((leftKey in rightIndex) && (rightKey in leftIndex) && (rightIndex[leftKey] !== leftIndex[rightKey])) {
+-            // found lines with the same text adjacent to both ends of the current line, merge all three
+-            var j = mergeFromLeft(leftKey, rightKey, geom);
+-            var i = mergeFromRight(leftKey, rightKey, mergedGeom[j]);
++    gl.enable(gl.DEPTH_TEST);
+ 
+-            delete leftIndex[leftKey];
+-            delete rightIndex[rightKey];
++    drawCollisionDebug(painter, source, layer, coords);
++}
+ 
+-            rightIndex[getKey(text, mergedGeom[i], true)] = i;
+-            mergedGeom[j] = null;
++function drawLayerSymbols(painter, source, layer, coords, isText,
++        translate,
++        translateAnchor,
++        rotationAlignment,
++        size,
++        haloWidth,
++        haloColor,
++        haloBlur,
++        opacity,
++        color) {
+ 
+-        } else if (leftKey in rightIndex) {
+-            // found mergeable line adjacent to the start of the current line, merge
+-            mergeFromRight(leftKey, rightKey, geom);
++    haloColor = util.premultiply(haloColor);
++    color = util.premultiply(color);
+ 
+-        } else if (rightKey in leftIndex) {
+-            // found mergeable line adjacent to the end of the current line, merge
+-            mergeFromLeft(leftKey, rightKey, geom);
++    for (var j = 0; j < coords.length; j++) {
++        var tile = source.getTile(coords[j]);
++        var bucket = tile.getBucket(layer);
++        if (!bucket) continue;
++        var bothBufferGroups = bucket.bufferGroups;
++        var bufferGroups = isText ? bothBufferGroups.glyph : bothBufferGroups.icon;
++        if (!bufferGroups.length) continue;
+ 
+-        } else {
+-            // no adjacent lines, add as a new item
+-            add(k);
+-            leftIndex[leftKey] = mergedIndex - 1;
+-            rightIndex[rightKey] = mergedIndex - 1;
+-        }
++        painter.enableTileClippingMask(coords[j]);
++        drawSymbol(painter, layer, coords[j].posMatrix, tile, bucket, bufferGroups, isText,
++                isText || bucket.sdfIcons, !isText && bucket.iconsNeedLinear,
++                isText ? bucket.adjustedTextSize : bucket.adjustedIconSize, bucket.fontstack,
++                translate,
++                translateAnchor,
++                rotationAlignment,
++                size,
++                haloWidth,
++                haloColor,
++                haloBlur,
++                opacity,
++                color);
+     }
++}
+ 
+-    return {
+-        features: mergedFeatures,
+-        textFeatures: mergedTexts,
+-        geometries: mergedGeom
+-    };
+-};
+-
+-},{}],313:[function(require,module,exports){
+-'use strict';
+-
+-var Point = require('point-geometry');
+-
+-module.exports = {
+-    getIconQuads: getIconQuads,
+-    getGlyphQuads: getGlyphQuads
+-};
+-
+-var minScale = 0.5; // underscale by 1 zoom level
++function drawSymbol(painter, layer, posMatrix, tile, bucket, bufferGroups, isText, sdf, iconsNeedLinear, adjustedSize, fontstack,
++        translate,
++        translateAnchor,
++        rotationAlignment,
++        size,
++        haloWidth,
++        haloColor,
++        haloBlur,
++        opacity,
++        color) {
++    var gl = painter.gl;
++    var tr = painter.transform;
++    var alignedWithMap = rotationAlignment === 'map';
+ 
+-/**
+- * A textured quad for rendering a single icon or glyph.
+- *
+- * The zoom range the glyph can be shown is defined by minScale and maxScale.
+- *
+- * @param {Point} anchorPoint the point the symbol is anchored around
+- * @param {Point} tl The offset of the top left corner from the anchor.
+- * @param {Point} tr The offset of the top right corner from the anchor.
+- * @param {Point} bl The offset of the bottom left corner from the anchor.
+- * @param {Point} br The offset of the bottom right corner from the anchor.
+- * @param {Object} tex The texture coordinates.
+- * @param {number} angle The angle of the label at it's center, not the angle of this quad.
+- * @param {number} minScale The minimum scale, relative to the tile's intended scale, that the glyph can be shown at.
+- * @param {number} maxScale The maximum scale, relative to the tile's intended scale, that the glyph can be shown at.
+- *
+- * @class SymbolQuad
+- * @private
+- */
+-function SymbolQuad(anchorPoint, tl, tr, bl, br, tex, angle, minScale, maxScale) {
+-    this.anchorPoint = anchorPoint;
+-    this.tl = tl;
+-    this.tr = tr;
+-    this.bl = bl;
+-    this.br = br;
+-    this.tex = tex;
+-    this.angle = angle;
+-    this.minScale = minScale;
+-    this.maxScale = maxScale;
+-}
++    var defaultSize = isText ? 24 : 1;
++    var fontScale = size / defaultSize;
+ 
+-/**
+- * Create the quads used for rendering an icon.
+- *
+- * @param {Anchor} anchor
+- * @param {PositionedIcon} shapedIcon
+- * @param {number} boxScale A magic number for converting glyph metric units to geometry units.
+- * @param {Array<Array<Point>>} line
+- * @param {LayoutProperties} layout
+- * @param {boolean} alongLine Whether the icon should be placed along the line.
+- * @returns {Array<SymbolQuad>}
+- * @private
+- */
+-function getIconQuads(anchor, shapedIcon, boxScale, line, layout, alongLine) {
++    var extrudeScale, s, gammaScale;
++    if (alignedWithMap) {
++        s = pixelsToTileUnits(tile, 1, painter.transform.zoom) * fontScale;
++        gammaScale = 1 / Math.cos(tr._pitch);
++        extrudeScale = [s, s];
++    } else {
++        s = painter.transform.altitude * fontScale;
++        gammaScale = 1;
++        extrudeScale = [ tr.pixelsToGLUnits[0] * s, tr.pixelsToGLUnits[1] * s];
++    }
+ 
+-    var rect = shapedIcon.image.rect;
++    // calculate how much longer the real world distance is at the top of the screen
++    // than at the middle of the screen.
++    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
++    var x = tr.height / 2 * Math.tan(tr._pitch);
++    var extra = (topedgelength + x) / topedgelength - 1;
+ 
+-    var border = 1;
+-    var left = shapedIcon.left - border;
+-    var right = left + rect.w / shapedIcon.image.pixelRatio;
+-    var top = shapedIcon.top - border;
+-    var bottom = top + rect.h / shapedIcon.image.pixelRatio;
+-    var tl = new Point(left, top);
+-    var tr = new Point(right, top);
+-    var br = new Point(right, bottom);
+-    var bl = new Point(left, bottom);
++    if (!isText && !painter.style.sprite.loaded())
++        return;
+ 
+-    var angle = layout['icon-rotate'] * Math.PI / 180;
+-    if (alongLine) {
+-        var prev = line[anchor.segment];
+-        if (anchor.y === prev.y && anchor.x === prev.x && anchor.segment + 1 < line.length) {
+-            var next = line[anchor.segment + 1];
+-            angle += Math.atan2(anchor.y - next.y, anchor.x - next.x) + Math.PI;
+-        } else {
+-            angle += Math.atan2(anchor.y - prev.y, anchor.x - prev.x);
+-        }
+-    }
++    var program = painter.useProgram(sdf ? 'sdf' : 'icon');
++    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(posMatrix, tile, translate, translateAnchor));
++    gl.uniform1i(program.u_skewed, alignedWithMap);
++    gl.uniform1f(program.u_extra, extra);
++    gl.uniform2fv(program.u_extrude_scale, extrudeScale);
+ 
+-    if (angle) {
+-        var sin = Math.sin(angle),
+-            cos = Math.cos(angle),
+-            matrix = [cos, -sin, sin, cos];
++    gl.activeTexture(gl.TEXTURE0);
++    gl.uniform1i(program.u_texture, 0);
+ 
+-        tl = tl.matMult(matrix);
+-        tr = tr.matMult(matrix);
+-        bl = bl.matMult(matrix);
+-        br = br.matMult(matrix);
++    if (isText) {
++        // use the fonstack used when parsing the tile, not the fontstack
++        // at the current zoom level (layout['text-font']).
++        var glyphAtlas = fontstack && painter.glyphSource.getGlyphAtlas(fontstack);
++        if (!glyphAtlas) return;
++
++        glyphAtlas.updateTexture(gl);
++        gl.uniform2f(program.u_texsize, glyphAtlas.width / 4, glyphAtlas.height / 4);
++    } else {
++        var mapMoving = painter.options.rotating || painter.options.zooming;
++        var iconScaled = fontScale !== 1 || browser.devicePixelRatio !== painter.spriteAtlas.pixelRatio || iconsNeedLinear;
++        var iconTransformed = alignedWithMap || painter.transform.pitch;
++        painter.spriteAtlas.bind(gl, sdf || mapMoving || iconScaled || iconTransformed);
++        gl.uniform2f(program.u_texsize, painter.spriteAtlas.width / 4, painter.spriteAtlas.height / 4);
+     }
+ 
+-    return [new SymbolQuad(new Point(anchor.x, anchor.y), tl, tr, bl, br, shapedIcon.image.rect, 0, minScale, Infinity)];
+-}
++    // adjust min/max zooms for variable font sizes
++    var zoomAdjust = Math.log(size / adjustedSize) / Math.LN2 || 0;
++    gl.uniform1f(program.u_zoom, (painter.transform.zoom - zoomAdjust) * 10); // current zoom level
+ 
+-/**
+- * Create the quads used for rendering a text label.
+- *
+- * @param {Anchor} anchor
+- * @param {Shaping} shaping
+- * @param {number} boxScale A magic number for converting from glyph metric units to geometry units.
+- * @param {Array<Array<Point>>} line
+- * @param {LayoutProperties} layout
+- * @param {boolean} alongLine Whether the label should be placed along the line.
+- * @returns {Array<SymbolQuad>}
+- * @private
+- */
+-function getGlyphQuads(anchor, shaping, boxScale, line, layout, alongLine) {
++    gl.activeTexture(gl.TEXTURE1);
++    painter.frameHistory.bind(gl);
++    gl.uniform1i(program.u_fadetexture, 1);
+ 
+-    var textRotate = layout['text-rotate'] * Math.PI / 180;
+-    var keepUpright = layout['text-keep-upright'];
++    var group;
+ 
+-    var positionedGlyphs = shaping.positionedGlyphs;
+-    var quads = [];
++    if (sdf) {
++        var sdfPx = 8;
++        var blurOffset = 1.19;
++        var haloOffset = 6;
++        var gamma = 0.105 * defaultSize / size / browser.devicePixelRatio;
+ 
+-    for (var k = 0; k < positionedGlyphs.length; k++) {
+-        var positionedGlyph = positionedGlyphs[k];
+-        var glyph = positionedGlyph.glyph;
+-        var rect = glyph.rect;
++        if (haloWidth) {
++            // Draw halo underneath the text.
++            gl.uniform1f(program.u_gamma, (haloBlur * blurOffset / fontScale / sdfPx + gamma) * gammaScale);
++            gl.uniform4fv(program.u_color, haloColor);
++            gl.uniform1f(program.u_opacity, opacity);
++            gl.uniform1f(program.u_buffer, (haloOffset - haloWidth / fontScale) / sdfPx);
+ 
+-        if (!rect) continue;
++            for (var j = 0; j < bufferGroups.length; j++) {
++                group = bufferGroups[j];
++                group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++                gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++            }
++        }
+ 
+-        var centerX = (positionedGlyph.x + glyph.advance / 2) * boxScale;
++        gl.uniform1f(program.u_gamma, gamma * gammaScale);
++        gl.uniform4fv(program.u_color, color);
++        gl.uniform1f(program.u_opacity, opacity);
++        gl.uniform1f(program.u_buffer, (256 - 64) / 256);
+ 
+-        var glyphInstances;
+-        var labelMinScale = minScale;
+-        if (alongLine) {
+-            glyphInstances = [];
+-            labelMinScale = getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, true);
+-            if (keepUpright) {
+-                labelMinScale = Math.min(labelMinScale, getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, false));
+-            }
++        for (var i = 0; i < bufferGroups.length; i++) {
++            group = bufferGroups[i];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
++        }
+ 
+-        } else {
+-            glyphInstances = [{
+-                anchorPoint: new Point(anchor.x, anchor.y),
+-                offset: 0,
+-                angle: 0,
+-                maxScale: Infinity,
+-                minScale: minScale
+-            }];
++    } else {
++        gl.uniform1f(program.u_opacity, opacity);
++        for (var k = 0; k < bufferGroups.length; k++) {
++            group = bufferGroups[k];
++            group.vaos[layer.id].bind(gl, program, group.layout.vertex, group.layout.element);
++            gl.drawElements(gl.TRIANGLES, group.layout.element.length * 3, gl.UNSIGNED_SHORT, 0);
+         }
++    }
++}
+ 
+-        var x1 = positionedGlyph.x + glyph.left,
+-            y1 = positionedGlyph.y - glyph.top,
+-            x2 = x1 + rect.w,
+-            y2 = y1 + rect.h,
++},{"../source/pixels_to_tile_units":290,"../util/browser":348,"../util/util":362,"./draw_collision_debug":276}],282:[function(require,module,exports){
++'use strict';
+ 
+-            otl = new Point(x1, y1),
+-            otr = new Point(x2, y1),
+-            obl = new Point(x1, y2),
+-            obr = new Point(x2, y2);
++module.exports = FrameHistory;
+ 
+-        for (var i = 0; i < glyphInstances.length; i++) {
++function FrameHistory() {
++    this.changeTimes = new Float64Array(256);
++    this.changeOpacities = new Uint8Array(256);
++    this.opacities = new Uint8ClampedArray(256);
++    this.array = new Uint8Array(this.opacities.buffer);
+ 
+-            var instance = glyphInstances[i],
+-                tl = otl,
+-                tr = otr,
+-                bl = obl,
+-                br = obr,
+-                angle = instance.angle + textRotate;
++    this.fadeDuration = 300;
++    this.previousZoom = 0;
++    this.firstFrame = true;
++}
+ 
+-            if (angle) {
+-                var sin = Math.sin(angle),
+-                    cos = Math.cos(angle),
+-                    matrix = [cos, -sin, sin, cos];
++FrameHistory.prototype.record = function(zoom) {
++    var now = Date.now();
+ 
+-                tl = tl.matMult(matrix);
+-                tr = tr.matMult(matrix);
+-                bl = bl.matMult(matrix);
+-                br = br.matMult(matrix);
+-            }
++    if (this.firstFrame) {
++        now = 0;
++        this.firstFrame = false;
++    }
+ 
+-            // Prevent label from extending past the end of the line
+-            var glyphMinScale = Math.max(instance.minScale, labelMinScale);
++    zoom = Math.floor(zoom * 10);
+ 
+-            var glyphAngle = (anchor.angle + textRotate + instance.offset + 2 * Math.PI) % (2 * Math.PI);
+-            quads.push(new SymbolQuad(instance.anchorPoint, tl, tr, bl, br, rect, glyphAngle, glyphMinScale, instance.maxScale));
++    var z;
++    if (zoom < this.previousZoom) {
++        for (z = zoom + 1; z <= this.previousZoom; z++) {
++            this.changeTimes[z] = now;
++            this.changeOpacities[z] = this.opacities[z];
++        }
++    } else {
++        for (z = zoom; z > this.previousZoom; z--) {
++            this.changeTimes[z] = now;
++            this.changeOpacities[z] = this.opacities[z];
++        }
++    }
+ 
++    for (z = 0; z < 256; z++) {
++        var timeSince = now - this.changeTimes[z];
++        var opacityChange = timeSince / this.fadeDuration * 255;
++        if (z <= zoom) {
++            this.opacities[z] = this.changeOpacities[z] + opacityChange;
++        } else {
++            this.opacities[z] = this.changeOpacities[z] - opacityChange;
+         }
+     }
+ 
+-    return quads;
+-}
++    this.changed = true;
++    this.previousZoom = zoom;
++};
++
++FrameHistory.prototype.bind = function(gl) {
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
++        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, 256, 1, 0, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
++
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        if (this.changed) {
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 256, 1, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
++            this.changed = false;
++        }
++    }
++};
++
++},{}],283:[function(require,module,exports){
++'use strict';
++
++module.exports = LineAtlas;
+ 
+ /**
+- * We can only render glyph quads that slide along a straight line. To draw
+- * curved lines we need an instance of a glyph for each segment it appears on.
+- * This creates all the instances of a glyph that are necessary to render a label.
+- *
+- * We need a
+- * @param {Array<Object>} glyphInstances An empty array that glyphInstances are added to.
+- * @param {Anchor} anchor
+- * @param {number} offset The glyph's offset from the center of the label.
+- * @param {Array<Point>} line
+- * @param {number} segment The index of the segment of the line on which the anchor exists.
+- * @param {boolean} forward If true get the glyphs that come later on the line, otherwise get the glyphs that come earlier.
++ * A LineAtlas lets us reuse rendered dashed lines
++ * by writing many of them to a texture and then fetching their positions
++ * using .getDash.
+  *
+- * @returns {Array<Object>} glyphInstances
++ * @param {number} width
++ * @param {number} height
+  * @private
+  */
+-function getSegmentGlyphs(glyphs, anchor, offset, line, segment, forward) {
+-    var upsideDown = !forward;
+-
+-    if (offset < 0) forward = !forward;
++function LineAtlas(width, height) {
++    this.width = width;
++    this.height = height;
++    this.nextRow = 0;
+ 
+-    if (forward) segment++;
++    this.bytes = 4;
++    this.data = new Uint8Array(this.width * this.height * this.bytes);
+ 
+-    var newAnchorPoint = new Point(anchor.x, anchor.y);
+-    var end = line[segment];
+-    var prevScale = Infinity;
++    this.positions = {};
++}
+ 
+-    offset = Math.abs(offset);
++LineAtlas.prototype.setSprite = function(sprite) {
++    this.sprite = sprite;
++};
+ 
+-    var placementScale = minScale;
++/**
++ * Get or create a dash line pattern.
++ *
++ * @param {Array<number>} dasharray
++ * @param {boolean} round whether to add circle caps in between dash segments
++ * @returns {Object} position of dash texture in { y, height, width }
++ * @private
++ */
++LineAtlas.prototype.getDash = function(dasharray, round) {
++    var key = dasharray.join(",") + round;
+ 
+-    while (true) {
+-        var distance = newAnchorPoint.dist(end);
+-        var scale = offset / distance;
++    if (!this.positions[key]) {
++        this.positions[key] = this.addDash(dasharray, round);
++    }
++    return this.positions[key];
++};
+ 
+-        // Get the angle of the line segment
+-        var angle = Math.atan2(end.y - newAnchorPoint.y, end.x - newAnchorPoint.x);
+-        if (!forward) angle += Math.PI;
+-        if (upsideDown) angle += Math.PI;
++LineAtlas.prototype.addDash = function(dasharray, round) {
+ 
+-        glyphs.push({
+-            anchorPoint: newAnchorPoint,
+-            offset: upsideDown ? Math.PI : 0,
+-            minScale: scale,
+-            maxScale: prevScale,
+-            angle: (angle + 2 * Math.PI) % (2 * Math.PI)
+-        });
++    var n = round ? 7 : 0;
++    var height = 2 * n + 1;
++    var offset = 128;
+ 
+-        if (scale <= placementScale) break;
++    if (this.nextRow + height > this.height) {
++        console.warn('LineAtlas out of space');
++        return null;
++    }
+ 
+-        newAnchorPoint = end;
++    var length = 0;
++    for (var i = 0; i < dasharray.length; i++) {
++        length += dasharray[i];
++    }
+ 
+-        // skip duplicate nodes
+-        while (newAnchorPoint.equals(end)) {
+-            segment += forward ? 1 : -1;
+-            end = line[segment];
+-            if (!end) {
+-                return scale;
+-            }
+-        }
++    var stretch = this.width / length;
++    var halfWidth = stretch / 2;
+ 
+-        var unit = end.sub(newAnchorPoint)._unit();
+-        newAnchorPoint = newAnchorPoint.sub(unit._mult(distance));
++    // If dasharray has an odd length, both the first and last parts
++    // are dashes and should be joined seamlessly.
++    var oddLength = dasharray.length % 2 === 1;
+ 
+-        prevScale = scale;
+-    }
++    for (var y = -n; y <= n; y++) {
++        var row = this.nextRow + n + y;
++        var index = this.width * row;
+ 
+-    return placementScale;
+-}
++        var left = oddLength ? -dasharray[dasharray.length - 1] : 0;
++        var right = dasharray[0];
++        var partIndex = 1;
+ 
+-},{"point-geometry":404}],314:[function(require,module,exports){
+-'use strict';
++        for (var x = 0; x < this.width; x++) {
+ 
+-var resolveTokens = require('../util/token');
++            while (right < x / stretch) {
++                left = right;
++                right = right + dasharray[partIndex];
+ 
+-module.exports = resolveText;
++                if (oddLength && partIndex === dasharray.length - 1) {
++                    right += dasharray[0];
++                }
+ 
+-/**
+- * For an array of features determine what glyphs need to be loaded
+- * and apply any text preprocessing. The remaining users of text should
+- * use the `textFeatures` key returned by this function rather than accessing
+- * feature text directly.
+- * @private
+- */
+-function resolveText(features, layoutProperties, codepoints) {
+-    var textFeatures = [];
++                partIndex++;
++            }
+ 
+-    for (var i = 0, fl = features.length; i < fl; i++) {
+-        var text = resolveTokens(features[i].properties, layoutProperties['text-field']);
+-        if (!text) {
+-            textFeatures[i] = null;
+-            continue;
+-        }
+-        text = text.toString();
++            var distLeft = Math.abs(x - left * stretch);
++            var distRight = Math.abs(x - right * stretch);
++            var dist = Math.min(distLeft, distRight);
++            var inside = (partIndex % 2) === 1;
++            var signedDistance;
+ 
+-        var transform = layoutProperties['text-transform'];
+-        if (transform === 'uppercase') {
+-            text = text.toLocaleUpperCase();
+-        } else if (transform === 'lowercase') {
+-            text = text.toLocaleLowerCase();
+-        }
++            if (round) {
++                // Add circle caps
++                var distMiddle = n ? y / n * (halfWidth + 1) : 0;
++                if (inside) {
++                    var distEdge = halfWidth - Math.abs(distMiddle);
++                    signedDistance = Math.sqrt(dist * dist + distEdge * distEdge);
++                } else {
++                    signedDistance = halfWidth - Math.sqrt(dist * dist + distMiddle * distMiddle);
++                }
++            } else {
++                signedDistance = (inside ? 1 : -1) * dist;
++            }
+ 
+-        for (var j = 0; j < text.length; j++) {
+-            codepoints[text.charCodeAt(j)] = true;
++            this.data[3 + (index + x) * 4] = Math.max(0, Math.min(255, signedDistance + offset));
+         }
+-
+-        // Track indexes of features with text.
+-        textFeatures[i] = text;
+     }
+ 
+-    return textFeatures;
+-}
++    var pos = {
++        y: (this.nextRow + n + 0.5) / this.height,
++        height: 2 * n / this.height,
++        width: length
++    };
+ 
+-},{"../util/token":348}],315:[function(require,module,exports){
+-'use strict';
++    this.nextRow += height;
++    this.dirty = true;
+ 
+-module.exports = {
+-    shapeText: shapeText,
+-    shapeIcon: shapeIcon
++    return pos;
+ };
+ 
++LineAtlas.prototype.bind = function(gl) {
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, this.width, this.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
+ 
+-// The position of a glyph relative to the text's anchor point.
+-function PositionedGlyph(codePoint, x, y, glyph) {
+-    this.codePoint = codePoint;
+-    this.x = x;
+-    this.y = y;
+-    this.glyph = glyph;
+-}
+-
+-// A collection of positioned glyphs and some metadata
+-function Shaping(positionedGlyphs, text, top, bottom, left, right) {
+-    this.positionedGlyphs = positionedGlyphs;
+-    this.text = text;
+-    this.top = top;
+-    this.bottom = bottom;
+-    this.left = left;
+-    this.right = right;
+-}
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+ 
+-function shapeText(text, glyphs, maxWidth, lineHeight, horizontalAlign, verticalAlign, justify, spacing, translate) {
++        if (this.dirty) {
++            this.dirty = false;
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
++        }
++    }
++};
+ 
+-    var positionedGlyphs = [];
+-    var shaping = new Shaping(positionedGlyphs, text, translate[1], translate[1], translate[0], translate[0]);
++},{}],284:[function(require,module,exports){
++'use strict';
+ 
+-    // the y offset *should* be part of the font metadata
+-    var yOffset = -17;
++var browser = require('../util/browser');
++var mat4 = require('gl-matrix').mat4;
++var FrameHistory = require('./frame_history');
++var TilePyramid = require('../source/tile_pyramid');
++var EXTENT = require('../data/bucket').EXTENT;
++var pixelsToTileUnits = require('../source/pixels_to_tile_units');
++var util = require('../util/util');
++var StructArrayType = require('../util/struct_array');
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('./vertex_array_object');
++var RasterBoundsArray = require('./draw_raster').RasterBoundsArray;
+ 
+-    var x = 0;
+-    var y = yOffset;
++module.exports = Painter;
+ 
+-    for (var i = 0; i < text.length; i++) {
+-        var codePoint = text.charCodeAt(i);
+-        var glyph = glyphs[codePoint];
++/**
++ * Initialize a new painter object.
++ *
++ * @param {Canvas} gl an experimental-webgl drawing context
++ * @private
++ */
++function Painter(gl, transform) {
++    this.gl = gl;
++    this.transform = transform;
+ 
+-        if (!glyph) continue;
++    this.reusableTextures = {};
++    this.preFbos = {};
+ 
+-        positionedGlyphs.push(new PositionedGlyph(codePoint, x, y, glyph));
+-        x += glyph.advance + spacing;
+-    }
++    this.frameHistory = new FrameHistory();
+ 
+-    if (!positionedGlyphs.length) return false;
++    this.setup();
+ 
+-    linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate);
++    // Within each layer there are multiple distinct z-planes that can be drawn to.
++    // This is implemented using the WebGL depth buffer.
++    this.numSublayers = TilePyramid.maxUnderzooming + TilePyramid.maxOverzooming + 1;
++    this.depthEpsilon = 1 / Math.pow(2, 16);
+ 
+-    return shaping;
++    this.lineWidthRange = gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE);
+ }
+ 
+-var invisible = {
+-    0x20:   true, // space
+-    0x200b: true  // zero-width space
+-};
++util.extend(Painter.prototype, require('./painter/use_program'));
++
++/*
++ * Update the GL viewport, projection matrix, and transforms to compensate
++ * for a new width and height value.
++ */
++Painter.prototype.resize = function(width, height) {
++    var gl = this.gl;
++
++    this.width = width * browser.devicePixelRatio;
++    this.height = height * browser.devicePixelRatio;
++    gl.viewport(0, 0, this.width, this.height);
+ 
+-var breakable = {
+-    0x20:   true, // space
+-    0x26:   true, // ampersand
+-    0x2b:   true, // plus sign
+-    0x2d:   true, // hyphen-minus
+-    0x2f:   true, // solidus
+-    0xad:   true, // soft hyphen
+-    0xb7:   true, // middle dot
+-    0x200b: true, // zero-width space
+-    0x2010: true, // hyphen
+-    0x2013: true  // en dash
+ };
+ 
+-function linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate) {
+-    var lastSafeBreak = null;
++Painter.prototype.setup = function() {
++    var gl = this.gl;
+ 
+-    var lengthBeforeCurrentLine = 0;
+-    var lineStartIndex = 0;
+-    var line = 0;
++    gl.verbose = true;
+ 
+-    var maxLineLength = 0;
++    // We are blending the new pixels *behind* the existing pixels. That way we can
++    // draw front-to-back and use then stencil buffer to cull opaque pixels early.
++    gl.enable(gl.BLEND);
++    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+ 
+-    var positionedGlyphs = shaping.positionedGlyphs;
++    gl.enable(gl.STENCIL_TEST);
+ 
+-    if (maxWidth) {
+-        for (var i = 0; i < positionedGlyphs.length; i++) {
+-            var positionedGlyph = positionedGlyphs[i];
++    gl.enable(gl.DEPTH_TEST);
++    gl.depthFunc(gl.LEQUAL);
+ 
+-            positionedGlyph.x -= lengthBeforeCurrentLine;
+-            positionedGlyph.y += lineHeight * line;
++    this._depthMask = false;
++    gl.depthMask(false);
+ 
+-            if (positionedGlyph.x > maxWidth && lastSafeBreak !== null) {
++    var PosArray = this.PosArray = new StructArrayType({
++        members: [{ name: 'a_pos', type: 'Int16', components: 2 }]
++    });
+ 
+-                var lineLength = positionedGlyphs[lastSafeBreak + 1].x;
+-                maxLineLength = Math.max(lineLength, maxLineLength);
++    var tileExtentArray = new PosArray();
++    tileExtentArray.emplaceBack(0, 0);
++    tileExtentArray.emplaceBack(EXTENT, 0);
++    tileExtentArray.emplaceBack(0, EXTENT);
++    tileExtentArray.emplaceBack(EXTENT, EXTENT);
++    this.tileExtentBuffer = new Buffer(tileExtentArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
++    this.tileExtentVAO = new VertexArrayObject();
++    this.tileExtentPatternVAO = new VertexArrayObject();
+ 
+-                for (var k = lastSafeBreak + 1; k <= i; k++) {
+-                    positionedGlyphs[k].y += lineHeight;
+-                    positionedGlyphs[k].x -= lineLength;
+-                }
++    var debugArray = new PosArray();
++    debugArray.emplaceBack(0, 0);
++    debugArray.emplaceBack(EXTENT, 0);
++    debugArray.emplaceBack(EXTENT, EXTENT);
++    debugArray.emplaceBack(0, EXTENT);
++    debugArray.emplaceBack(0, 0);
++    this.debugBuffer = new Buffer(debugArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
++    this.debugVAO = new VertexArrayObject();
+ 
+-                if (justify) {
+-                    // Collapse invisible characters.
+-                    var lineEnd = lastSafeBreak;
+-                    if (invisible[positionedGlyphs[lastSafeBreak].codePoint]) {
+-                        lineEnd--;
+-                    }
++    var rasterBoundsArray = new RasterBoundsArray();
++    rasterBoundsArray.emplaceBack(0, 0, 0, 0);
++    rasterBoundsArray.emplaceBack(EXTENT, 0, 32767, 0);
++    rasterBoundsArray.emplaceBack(0, EXTENT, 0, 32767);
++    rasterBoundsArray.emplaceBack(EXTENT, EXTENT, 32767, 32767);
++    this.rasterBoundsBuffer = new Buffer(rasterBoundsArray.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
++    this.rasterBoundsVAO = new VertexArrayObject();
++};
+ 
+-                    justifyLine(positionedGlyphs, glyphs, lineStartIndex, lineEnd, justify);
+-                }
++/*
++ * Reset the color buffers of the drawing canvas.
++ */
++Painter.prototype.clearColor = function() {
++    var gl = this.gl;
++    gl.clearColor(0, 0, 0, 0);
++    gl.clear(gl.COLOR_BUFFER_BIT);
++};
+ 
+-                lineStartIndex = lastSafeBreak + 1;
+-                lastSafeBreak = null;
+-                lengthBeforeCurrentLine += lineLength;
+-                line++;
+-            }
++/*
++ * Reset the drawing canvas by clearing the stencil buffer so that we can draw
++ * new tiles at the same location, while retaining previously drawn pixels.
++ */
++Painter.prototype.clearStencil = function() {
++    var gl = this.gl;
++    gl.clearStencil(0x0);
++    gl.stencilMask(0xFF);
++    gl.clear(gl.STENCIL_BUFFER_BIT);
++};
+ 
+-            if (breakable[positionedGlyph.codePoint]) {
+-                lastSafeBreak = i;
+-            }
+-        }
+-    }
++Painter.prototype.clearDepth = function() {
++    var gl = this.gl;
++    gl.clearDepth(1);
++    this.depthMask(true);
++    gl.clear(gl.DEPTH_BUFFER_BIT);
++};
+ 
+-    var lastPositionedGlyph = positionedGlyphs[positionedGlyphs.length - 1];
+-    var lastLineLength = lastPositionedGlyph.x + glyphs[lastPositionedGlyph.codePoint].advance;
+-    maxLineLength = Math.max(maxLineLength, lastLineLength);
++Painter.prototype._renderTileClippingMasks = function(coords) {
++    var gl = this.gl;
++    gl.colorMask(false, false, false, false);
++    this.depthMask(false);
++    gl.disable(gl.DEPTH_TEST);
++    gl.enable(gl.STENCIL_TEST);
+ 
+-    var height = (line + 1) * lineHeight;
++    // Only write clipping IDs to the last 5 bits. The first three are used for drawing fills.
++    gl.stencilMask(0xF8);
++    // Tests will always pass, and ref value will be written to stencil buffer.
++    gl.stencilOp(gl.KEEP, gl.KEEP, gl.REPLACE);
+ 
+-    justifyLine(positionedGlyphs, glyphs, lineStartIndex, positionedGlyphs.length - 1, justify);
+-    align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate);
++    var idNext = 1;
++    this._tileClippingMaskIDs = {};
++    for (var i = 0; i < coords.length; i++) {
++        var coord = coords[i];
++        var id = this._tileClippingMaskIDs[coord.id] = (idNext++) << 3;
+ 
+-    // Calculate the bounding box
+-    shaping.top += -verticalAlign * height;
+-    shaping.bottom = shaping.top + height;
+-    shaping.left += -horizontalAlign * maxLineLength;
+-    shaping.right = shaping.left + maxLineLength;
+-}
++        gl.stencilFunc(gl.ALWAYS, id, 0xF8);
+ 
+-function justifyLine(positionedGlyphs, glyphs, start, end, justify) {
+-    var lastAdvance = glyphs[positionedGlyphs[end].codePoint].advance;
+-    var lineIndent = (positionedGlyphs[end].x + lastAdvance) * justify;
++        var program = this.useProgram('fill');
++        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);
+ 
+-    for (var j = start; j <= end; j++) {
+-        positionedGlyphs[j].x -= lineIndent;
++        // Draw the clipping mask
++        this.tileExtentVAO.bind(gl, program, this.tileExtentBuffer);
++        gl.drawArrays(gl.TRIANGLE_STRIP, 0, this.tileExtentBuffer.length);
+     }
+ 
+-}
++    gl.stencilMask(0x00);
++    gl.colorMask(true, true, true, true);
++    this.depthMask(true);
++    gl.enable(gl.DEPTH_TEST);
++};
+ 
+-function align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate) {
+-    var shiftX = (justify - horizontalAlign) * maxLineLength + translate[0];
+-    var shiftY = (-verticalAlign * (line + 1) + 0.5) * lineHeight + translate[1];
++Painter.prototype.enableTileClippingMask = function(coord) {
++    var gl = this.gl;
++    gl.stencilFunc(gl.EQUAL, this._tileClippingMaskIDs[coord.id], 0xF8);
++};
+ 
+-    for (var j = 0; j < positionedGlyphs.length; j++) {
+-        positionedGlyphs[j].x += shiftX;
+-        positionedGlyphs[j].y += shiftY;
+-    }
+-}
++// Overridden by headless tests.
++Painter.prototype.prepareBuffers = function() {};
++Painter.prototype.bindDefaultFramebuffer = function() {
++    var gl = this.gl;
++    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
++};
+ 
++var draw = {
++    symbol: require('./draw_symbol'),
++    circle: require('./draw_circle'),
++    line: require('./draw_line'),
++    fill: require('./draw_fill'),
++    raster: require('./draw_raster'),
++    background: require('./draw_background'),
++    debug: require('./draw_debug')
++};
+ 
+-function shapeIcon(image, layout) {
+-    if (!image || !image.rect) return null;
++Painter.prototype.render = function(style, options) {
++    this.style = style;
++    this.options = options;
+ 
+-    var dx = layout['icon-offset'][0];
+-    var dy = layout['icon-offset'][1];
+-    var x1 = dx - image.width / 2;
+-    var x2 = x1 + image.width;
+-    var y1 = dy - image.height / 2;
+-    var y2 = y1 + image.height;
++    this.lineAtlas = style.lineAtlas;
+ 
+-    return new PositionedIcon(image, y1, y2, x1, x2);
+-}
++    this.spriteAtlas = style.spriteAtlas;
++    this.spriteAtlas.setSprite(style.sprite);
+ 
+-function PositionedIcon(image, top, bottom, left, right) {
+-    this.image = image;
+-    this.top = top;
+-    this.bottom = bottom;
+-    this.left = left;
+-    this.right = right;
+-}
++    this.glyphSource = style.glyphSource;
+ 
+-},{}],316:[function(require,module,exports){
+-'use strict';
++    this.frameHistory.record(this.transform.zoom);
+ 
+-var ShelfPack = require('shelf-pack');
+-var browser = require('../util/browser');
++    this.prepareBuffers();
++    this.clearColor();
++    this.clearDepth();
+ 
+-module.exports = SpriteAtlas;
+-function SpriteAtlas(width, height) {
+-    this.width = width;
+-    this.height = height;
++    this.showOverdrawInspector(options.showOverdrawInspector);
+ 
+-    this.bin = new ShelfPack(width, height);
+-    this.images = {};
+-    this.data = false;
+-    this.texture = 0; // WebGL ID
+-    this.filter = 0; // WebGL ID
+-    this.pixelRatio = 1;
+-    this.dirty = true;
+-}
++    this.depthRange = (style._order.length + 2) * this.numSublayers * this.depthEpsilon;
+ 
+-function copyBitmap(src, srcStride, srcX, srcY, dst, dstStride, dstX, dstY, width, height, wrap) {
+-    var srcI = srcY * srcStride + srcX;
+-    var dstI = dstY * dstStride + dstX;
+-    var x, y;
++    this.renderPass({isOpaquePass: true});
++    this.renderPass({isOpaquePass: false});
++};
+ 
+-    if (wrap) {
+-        // add 1 pixel wrapped padding on each side of the image
+-        dstI -= dstStride;
+-        for (y = -1; y <= height; y++, srcI = ((y + height) % height + srcY) * srcStride + srcX, dstI += dstStride) {
+-            for (x = -1; x <= width; x++) {
+-                dst[dstI + x] = src[srcI + ((x + width) % width)];
++Painter.prototype.renderPass = function(options) {
++    var groups = this.style._groups;
++    var isOpaquePass = options.isOpaquePass;
++    this.currentLayer = isOpaquePass ? this.style._order.length : -1;
++
++    for (var i = 0; i < groups.length; i++) {
++        var group = groups[isOpaquePass ? groups.length - 1 - i : i];
++        var source = this.style.sources[group.source];
++
++        var j;
++        var coords = [];
++        if (source) {
++            coords = source.getVisibleCoordinates();
++            for (j = 0; j < coords.length; j++) {
++                coords[j].posMatrix = this.transform.calculatePosMatrix(coords[j], source.maxzoom);
++            }
++            this.clearStencil();
++            if (source.prepare) source.prepare();
++            if (source.isTileClipped) {
++                this._renderTileClippingMasks(coords);
+             }
+         }
+ 
+-    } else {
+-        for (y = 0; y < height; y++, srcI += srcStride, dstI += dstStride) {
+-            for (x = 0; x < width; x++) {
+-                dst[dstI + x] = src[srcI + x];
++        if (isOpaquePass) {
++            if (!this._showOverdrawInspector) {
++                this.gl.disable(this.gl.BLEND);
+             }
++            this.isOpaquePass = true;
++        } else {
++            this.gl.enable(this.gl.BLEND);
++            this.isOpaquePass = false;
++            coords.reverse();
+         }
+-    }
+-}
+-
+-SpriteAtlas.prototype.allocateImage = function(pixelWidth, pixelHeight) {
+-
+-    pixelWidth = pixelWidth / this.pixelRatio;
+-    pixelHeight = pixelHeight / this.pixelRatio;
+ 
+-    // Increase to next number divisible by 4, but at least 1.
+-    // This is so we can scale down the texture coordinates and pack them
+-    // into 2 bytes rather than 4 bytes.
+-    // Pad icons to prevent them from polluting neighbours during linear interpolation
+-    var padding = 2;
+-    var packWidth = pixelWidth + padding + (4 - (pixelWidth + padding) % 4);
+-    var packHeight = pixelHeight + padding + (4 - (pixelHeight + padding) % 4);// + 4;
++        for (j = 0; j < group.length; j++) {
++            var layer = group[isOpaquePass ? group.length - 1 - j : j];
++            this.currentLayer += isOpaquePass ? -1 : 1;
++            this.renderLayer(this, source, layer, coords);
++        }
+ 
+-    var rect = this.bin.packOne(packWidth, packHeight);
+-    if (!rect) {
+-        console.warn('SpriteAtlas out of space.');
+-        return null;
++        if (source) {
++            draw.debug(this, source, coords);
++        }
+     }
+-
+-    return rect;
+ };
+ 
+-SpriteAtlas.prototype.getImage = function(name, wrap) {
+-    if (this.images[name]) {
+-        return this.images[name];
++Painter.prototype.depthMask = function(mask) {
++    if (mask !== this._depthMask) {
++        this._depthMask = mask;
++        this.gl.depthMask(mask);
+     }
++};
+ 
+-    if (!this.sprite) {
+-        return null;
+-    }
++Painter.prototype.renderLayer = function(painter, source, layer, coords) {
++    if (layer.isHidden(this.transform.zoom)) return;
++    if (layer.type !== 'background' && !coords.length) return;
++    this.id = layer.id;
++    draw[layer.type](painter, source, layer, coords);
++};
+ 
+-    var pos = this.sprite.getSpritePosition(name);
+-    if (!pos.width || !pos.height) {
+-        return null;
+-    }
++Painter.prototype.setDepthSublayer = function(n) {
++    var farDepth = 1 - ((1 + this.currentLayer) * this.numSublayers + n) * this.depthEpsilon;
++    var nearDepth = farDepth - 1 + this.depthRange;
++    this.gl.depthRange(nearDepth, farDepth);
++};
+ 
+-    var rect = this.allocateImage(pos.width, pos.height);
+-    if (!rect) {
+-        return null;
+-    }
++Painter.prototype.translatePosMatrix = function(matrix, tile, translate, anchor) {
++    if (!translate[0] && !translate[1]) return matrix;
+ 
+-    var image = new AtlasImage(rect, pos.width / pos.pixelRatio, pos.height / pos.pixelRatio, pos.sdf, pos.pixelRatio / this.pixelRatio);
+-    this.images[name] = image;
++    if (anchor === 'viewport') {
++        var sinA = Math.sin(-this.transform.angle);
++        var cosA = Math.cos(-this.transform.angle);
++        translate = [
++            translate[0] * cosA - translate[1] * sinA,
++            translate[0] * sinA + translate[1] * cosA
++        ];
++    }
+ 
+-    this.copy(rect, pos, wrap);
++    var translation = [
++        pixelsToTileUnits(tile, translate[0], this.transform.zoom),
++        pixelsToTileUnits(tile, translate[1], this.transform.zoom),
++        0
++    ];
+ 
+-    return image;
++    var translatedMatrix = new Float32Array(16);
++    mat4.translate(translatedMatrix, matrix, translation);
++    return translatedMatrix;
+ };
+ 
+-
+-// Return position of a repeating fill pattern.
+-SpriteAtlas.prototype.getPosition = function(name, repeating) {
+-    var image = this.getImage(name, repeating);
+-    var rect = image && image.rect;
+-
+-    if (!rect) {
+-        return null;
++Painter.prototype.saveTexture = function(texture) {
++    var textures = this.reusableTextures[texture.size];
++    if (!textures) {
++        this.reusableTextures[texture.size] = [texture];
++    } else {
++        textures.push(texture);
+     }
++};
+ 
+-    var width = image.width * image.pixelRatio;
+-    var height = image.height * image.pixelRatio;
+-    var padding = 1;
+ 
+-    return {
+-        size: [image.width, image.height],
+-        tl: [(rect.x + padding)         / this.width, (rect.y + padding)          / this.height],
+-        br: [(rect.x + padding + width) / this.width, (rect.y + padding + height) / this.height]
+-    };
++Painter.prototype.getTexture = function(size) {
++    var textures = this.reusableTextures[size];
++    return textures && textures.length > 0 ? textures.pop() : null;
+ };
+ 
+-
+-SpriteAtlas.prototype.allocate = function() {
+-    if (!this.data) {
+-        var w = Math.floor(this.width * this.pixelRatio);
+-        var h = Math.floor(this.height * this.pixelRatio);
+-        this.data = new Uint32Array(w * h);
+-        for (var i = 0; i < this.data.length; i++) {
+-            this.data[i] = 0;
+-        }
+-    }
++Painter.prototype.lineWidth = function(width) {
++    this.gl.lineWidth(util.clamp(width, this.lineWidthRange[0], this.lineWidthRange[1]));
+ };
+ 
++Painter.prototype.showOverdrawInspector = function(enabled) {
++    if (!enabled && !this._showOverdrawInspector) return;
++    this._showOverdrawInspector = enabled;
+ 
+-SpriteAtlas.prototype.copy = function(dst, src, wrap) {
+-    if (!this.sprite.img.data) return;
+-    var srcImg = new Uint32Array(this.sprite.img.data.buffer);
++    var gl = this.gl;
++    if (enabled) {
++        gl.blendFunc(gl.CONSTANT_COLOR, gl.ONE);
++        var numOverdrawSteps = 8;
++        var a = 1 / numOverdrawSteps;
++        gl.blendColor(a, a, a, 0);
++        gl.clearColor(0, 0, 0, 1);
++        gl.clear(gl.COLOR_BUFFER_BIT);
++    } else {
++        gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
++    }
++};
+ 
+-    this.allocate();
+-    var dstImg = this.data;
++},{"../data/bucket":260,"../data/buffer":265,"../source/pixels_to_tile_units":290,"../source/tile_pyramid":295,"../util/browser":348,"../util/struct_array":360,"../util/util":362,"./draw_background":274,"./draw_circle":275,"./draw_debug":277,"./draw_fill":278,"./draw_line":279,"./draw_raster":280,"./draw_symbol":281,"./frame_history":282,"./painter/use_program":285,"./vertex_array_object":286,"gl-matrix":154}],285:[function(require,module,exports){
++'use strict';
+ 
+-    var padding = 1;
+ 
+-    copyBitmap(
+-        /* source buffer */  srcImg,
+-        /* source stride */  this.sprite.img.width,
+-        /* source x */       src.x,
+-        /* source y */       src.y,
+-        /* dest buffer */    dstImg,
+-        /* dest stride */    this.width * this.pixelRatio,
+-        /* dest x */         (dst.x + padding) * this.pixelRatio,
+-        /* dest y */         (dst.y + padding) * this.pixelRatio,
+-        /* icon dimension */ src.width,
+-        /* icon dimension */ src.height,
+-        /* wrap */ wrap
+-    );
++var path = require('path');
++var assert = require('assert');
++var util = require('../../util/util');
+ 
+-    this.dirty = true;
++// readFileSync calls must be written out long-form for brfs.
++var definitions = {
++    debug: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\n\nvoid main() {\n    gl_FragColor = u_color;\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1);\n}\n"
++    },
++    fill: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvoid main() {\n    gl_FragColor = u_color * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n"
++    },
++    circle: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp float u_blur;\nuniform lowp float u_opacity;\n\nvarying lowp vec4 v_color;\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main() {\n    float t = smoothstep(1.0 - max(u_blur, v_antialiasblur), 1.0, length(v_extrude));\n    gl_FragColor = v_color * (1.0 - t) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_extrude_scale;\nuniform float u_devicepixelratio;\n\nattribute vec2 a_pos;\n\n#ifdef ATTRIBUTE_A_COLOR\nattribute lowp vec4 a_color;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\nuniform lowp float u_color_t;\nattribute lowp vec4 a_color0;\nattribute lowp vec4 a_color1;\nattribute lowp vec4 a_color2;\nattribute lowp vec4 a_color3;\n#else\nuniform lowp vec4 a_color;\n#endif\n\n#ifdef ATTRIBUTE_A_RADIUS\nattribute mediump float a_radius;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\nuniform lowp float u_radius_t;\nattribute mediump vec4 a_radius;\n#else\nuniform mediump float a_radius;\n#endif\n\nvarying vec2 v_extrude;\nvarying lowp vec4 v_color;\nvarying lowp float v_antialiasblur;\n\nfloat evaluate_zoom_function_1(const vec4 values, const float t) {\n    if (t < 1.0) {\n        return mix(values[0], values[1], t);\n    } else if (t < 2.0) {\n        return mix(values[1], values[2], t - 1.0);\n    } else {\n        return mix(values[2], values[3], t - 2.0);\n    }\n}\n\nvec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) {\n    if (t < 1.0) {\n        return mix(value0, value1, t);\n    } else if (t < 2.0) {\n        return mix(value1, value2, t - 1.0);\n    } else {\n        return mix(value2, value3, t - 2.0);\n    }\n}\n\nvoid main(void) {\n\n#ifdef ATTRIBUTE_A_RADIUS\n    mediump float radius = a_radius / 10.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\n    mediump float radius = evaluate_zoom_function_1(a_radius, u_radius_t) / 10.0;\n#else\n    mediump float radius = a_radius;\n#endif\n\n    // unencode the extrusion vector that we snuck into the a_pos vector\n    v_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);\n\n    vec2 extrude = v_extrude * radius * u_extrude_scale;\n    // multiply a_pos by 0.5, since we had it * 2 in order to sneak\n    // in extrusion data\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1);\n\n    // gl_Position is divided by gl_Position.w after this shader runs.\n    // Multiply the extrude by it so that it isn't affected by it.\n    gl_Position.xy += extrude * gl_Position.w;\n\n#ifdef ATTRIBUTE_A_COLOR\n    v_color = a_color / 255.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\n    v_color = evaluate_zoom_function_4(a_color0, a_color1, a_color2, a_color3, u_color_t) / 255.0;\n#else\n    v_color = a_color;\n#endif\n\n    // This is a minimum blur distance that serves as a faux-antialiasing for\n    // the circle. since blur is a ratio of the circle's size and the intent is\n    // to keep the blur at roughly 1px, the two are inversely related.\n    v_antialiasblur = 1.0 / u_devicepixelratio / radius;\n}\n"
++    },
++    line: {
++        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
++    },
++    linepattern: {
++        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform float u_point;\nuniform float u_blur;\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_fade;\nuniform float u_opacity;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0);\n    float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0);\n    float y_a = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_a.y);\n    float y_b = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_b.y);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, vec2(x_a, y_a));\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, vec2(x_b, y_b));\n\n    vec4 color = mix(texture2D(u_image, pos), texture2D(u_image, pos2), u_fade);\n\n    alpha *= u_opacity;\n\n    gl_FragColor = color * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 extrude = a_extrude * scale;\n    mediump vec2 dist = u_linewidth.s * extrude;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n    v_linesofar = a_linesofar;\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
++    },
++    linesdfpattern: {
++        fragmentSource: "precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\nuniform sampler2D u_image;\nuniform float u_sdfgamma;\nuniform float u_mix;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float sdfdist_a = texture2D(u_image, v_tex_a).a;\n    float sdfdist_b = texture2D(u_image, v_tex_b).a;\n    float sdfdist = mix(sdfdist_a, sdfdist_b, u_mix);\n    alpha *= smoothstep(0.5 - u_sdfgamma, 0.5 + u_sdfgamma, sdfdist);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump vec2 u_linewidth;\nuniform mediump float u_ratio;\nuniform vec2 u_patternscale_a;\nuniform float u_tex_y_a;\nuniform vec2 u_patternscale_b;\nuniform float u_tex_y_b;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    v_tex_a = vec2(a_linesofar * u_patternscale_a.x, normal.y * u_patternscale_a.y + u_tex_y_a);\n    v_tex_b = vec2(a_linesofar * u_patternscale_b.x, normal.y * u_patternscale_b.y + u_tex_y_b);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
++    },
++    outline: {
++        fragmentSource: "precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
++    },
++    outlinepattern: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    // find distance to outline for alpha interpolation\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    \n\n    gl_FragColor = mix(color1, color2, u_mix) * alpha * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
++    },
++    pattern: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    gl_FragColor = mix(color1, color2, u_mix) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n}\n"
++    },
++    raster: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_opacity0;\nuniform float u_opacity1;\nuniform sampler2D u_image0;\nuniform sampler2D u_image1;\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nuniform float u_brightness_low;\nuniform float u_brightness_high;\n\nuniform float u_saturation_factor;\nuniform float u_contrast_factor;\nuniform vec3 u_spin_weights;\n\nvoid main() {\n\n    // read and cross-fade colors from the main and parent tiles\n    vec4 color0 = texture2D(u_image0, v_pos0);\n    vec4 color1 = texture2D(u_image1, v_pos1);\n    vec4 color = color0 * u_opacity0 + color1 * u_opacity1;\n    vec3 rgb = color.rgb;\n\n    // spin\n    rgb = vec3(\n        dot(rgb, u_spin_weights.xyz),\n        dot(rgb, u_spin_weights.zxy),\n        dot(rgb, u_spin_weights.yzx));\n\n    // saturation\n    float average = (color.r + color.g + color.b) / 3.0;\n    rgb += (average - rgb) * u_saturation_factor;\n\n    // contrast\n    rgb = (rgb - 0.5) * u_contrast_factor + 0.5;\n\n    // brightness\n    vec3 u_high_vec = vec3(u_brightness_low, u_brightness_low, u_brightness_low);\n    vec3 u_low_vec = vec3(u_brightness_high, u_brightness_high, u_brightness_high);\n\n    gl_FragColor = vec4(mix(u_high_vec, u_low_vec, rgb), color.a);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_tl_parent;\nuniform float u_scale_parent;\nuniform float u_buffer_scale;\n\nattribute vec2 a_pos;\nattribute vec2 a_texture_pos;\n\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5;\n    v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent;\n}\n"
++    },
++    icon: {
++        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp float u_opacity;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * u_opacity;\n    gl_FragColor = texture2D(u_texture, v_tex) * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
++    },
++    sdf: {
++        fragmentSource: "precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform lowp float u_buffer;\nuniform lowp float u_gamma;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    lowp float dist = texture2D(u_texture, v_tex).a;\n    lowp float fade_alpha = texture2D(u_fadetexture, v_fade_tex).a;\n    lowp float gamma = u_gamma * v_gamma_scale;\n    lowp float alpha = smoothstep(u_buffer - gamma, u_buffer + gamma, dist) * fade_alpha;\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - y * u_extra);\n    v_gamma_scale = perspective_scale;\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
++    },
++    collisionbox: {
++        fragmentSource: "precision mediump float;\n\nuniform float u_zoom;\nuniform float u_maxzoom;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n\n    float alpha = 0.5;\n\n    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha;\n\n    if (v_placement_zoom > u_zoom) {\n        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha;\n    }\n\n    if (u_zoom >= v_max_zoom) {\n        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25;\n    }\n\n    if (v_placement_zoom >= u_maxzoom) {\n        gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2;\n    }\n}\n",
++        vertexSource: "precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_extrude;\nattribute vec2 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_scale;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n     gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0);\n\n     v_max_zoom = a_data.x;\n     v_placement_zoom = a_data.y;\n}\n"
++    }
+ };
+ 
+-SpriteAtlas.prototype.setSprite = function(sprite) {
+-    if (sprite) {
+-        this.pixelRatio = browser.devicePixelRatio > 1 ? 2 : 1;
++module.exports._createProgram = function(name, macros) {
++    var gl = this.gl;
++    var program = gl.createProgram();
++    var definition = definitions[name];
+ 
+-        if (this.canvas) {
+-            this.canvas.width = this.width * this.pixelRatio;
+-            this.canvas.height = this.height * this.pixelRatio;
++    var defines = '';
++    if (macros) {
++        for (var m = 0; m < macros.length; m++) {
++            defines += '#define ' + macros[m] + '\n';
+         }
+     }
+-    this.sprite = sprite;
+-};
+ 
+-SpriteAtlas.prototype.addIcons = function(icons, callback) {
+-    for (var i = 0; i < icons.length; i++) {
+-        this.getImage(icons[i]);
++    var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);
++    gl.shaderSource(fragmentShader, defines + definition.fragmentSource);
++    gl.compileShader(fragmentShader);
++    assert(gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(fragmentShader));
++    gl.attachShader(program, fragmentShader);
++
++    var vertexShader = gl.createShader(gl.VERTEX_SHADER);
++    gl.shaderSource(vertexShader, defines + definition.vertexSource);
++    gl.compileShader(vertexShader);
++    assert(gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(vertexShader));
++    gl.attachShader(program, vertexShader);
++
++    gl.linkProgram(program);
++    assert(gl.getProgramParameter(program, gl.LINK_STATUS), gl.getProgramInfoLog(program));
++
++    var attributes = {};
++    var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
++    for (var i = 0; i < numAttributes; i++) {
++        var attribute = gl.getActiveAttrib(program, i);
++        attributes[attribute.name] = i;
++    }
++
++    var uniforms = {};
++    var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
++    for (var ui = 0; ui < numUniforms; ui++) {
++        var uniform = gl.getActiveUniform(program, ui);
++        uniforms[uniform.name] = gl.getUniformLocation(program, uniform.name);
+     }
+ 
+-    callback(null, this.images);
++    return util.extend({
++        program: program,
++        definition: definition,
++        attributes: attributes,
++        numAttributes: numAttributes
++    }, attributes, uniforms);
+ };
+ 
+-SpriteAtlas.prototype.bind = function(gl, linear) {
+-    var first = false;
+-    if (!this.texture) {
+-        this.texture = gl.createTexture();
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+-        first = true;
+-    } else {
+-        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++module.exports._createProgramCached = function(name, macros) {
++    this.cache = this.cache || {};
++    if (this._showOverdrawInspector) {
++        macros = macros || [];
++        macros.push('OVERDRAW_INSPECTOR');
+     }
+-
+-    var filterVal = linear ? gl.LINEAR : gl.NEAREST;
+-    if (filterVal !== this.filter) {
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, filterVal);
+-        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, filterVal);
+-        this.filter = filterVal;
++    var key = JSON.stringify({name: name, macros: macros});
++    if (!this.cache[key]) {
++        this.cache[key] = this._createProgram(name, macros);
+     }
++    return this.cache[key];
++};
+ 
+-    if (this.dirty) {
+-        this.allocate();
++module.exports.useProgram = function (nextProgramName, macros) {
++    var gl = this.gl;
+ 
+-        if (first) {
+-            gl.texImage2D(
+-                gl.TEXTURE_2D, // enum target
+-                0, // ind level
+-                gl.RGBA, // ind internalformat
+-                this.width * this.pixelRatio, // GLsizei width
+-                this.height * this.pixelRatio, // GLsizei height
+-                0, // ind border
+-                gl.RGBA, // enum format
+-                gl.UNSIGNED_BYTE, // enum type
+-                new Uint8Array(this.data.buffer) // Object data
+-            );
+-        } else {
+-            gl.texSubImage2D(
+-                gl.TEXTURE_2D, // enum target
+-                0, // int level
+-                0, // int xoffset
+-                0, // int yoffset
+-                this.width * this.pixelRatio, // long width
+-                this.height * this.pixelRatio, // long height
+-                gl.RGBA, // enum format
+-                gl.UNSIGNED_BYTE, // enum type
+-                new Uint8Array(this.data.buffer) // Object pixels
+-            );
+-        }
++    var nextProgram = this._createProgramCached(nextProgramName, macros);
++    var previousProgram = this.currentProgram;
+ 
+-        this.dirty = false;
++    if (previousProgram !== nextProgram) {
++        gl.useProgram(nextProgram.program);
++        this.currentProgram = nextProgram;
+     }
+-};
+ 
+-function AtlasImage(rect, width, height, sdf, pixelRatio) {
+-    this.rect = rect;
+-    this.width = width;
+-    this.height = height;
+-    this.sdf = sdf;
+-    this.pixelRatio = pixelRatio;
+-}
++    return nextProgram;
++};
+ 
+-},{"../util/browser":335,"shelf-pack":406}],317:[function(require,module,exports){
++},{"../../util/util":362,"assert":29,"path":392}],286:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('../util/util');
+-var interpolate = require('../util/interpolate');
+-var browser = require('../util/browser');
+-var LngLat = require('../geo/lng_lat');
+-var LngLatBounds = require('../geo/lng_lat_bounds');
+-var Point = require('point-geometry');
+-
+-/**
+- * Options common to Map#jumpTo, Map#easeTo, and Map#flyTo, controlling the destination
+- * location, zoom level, bearing and pitch. All properties are options; unspecified
+- * options will default to the current value for that property.
+- *
+- * @typedef {Object} CameraOptions
+- * @property {LngLat} center Map center
+- * @property {number} zoom Map zoom level
+- * @property {number} bearing Map rotation bearing in degrees counter-clockwise from north
+- * @property {number} pitch Map angle in degrees at which the camera is looking at the ground
+- * @property {LngLat} around If zooming, the zoom center (defaults to map center)
+- */
++var assert = require('assert');
+ 
+-/**
+- * Options common to map movement methods that involve animation, such as Map#panBy and
+- * Map#easeTo, controlling the duration of the animation and easing function. All properties
+- * are optional.
+- *
+- * @typedef {Object} AnimationOptions
+- * @property {number} duration Number in milliseconds
+- * @property {Function} easing
+- * @property {Array} offset point, origin of movement relative to map center
+- * @property {boolean} animate When set to false, no animation happens
+- */
++module.exports = VertexArrayObject;
+ 
+-var Camera = module.exports = function() {};
++function VertexArrayObject() {
++    this.boundProgram = null;
++    this.boundVertexBuffer = null;
++    this.boundVertexBuffer2 = null;
++    this.boundElementBuffer = null;
++    this.vao = null;
++}
+ 
+-util.extend(Camera.prototype, /** @lends Map.prototype */{
+-    /**
+-     * Get the current view geographical point.
+-     * @returns {LngLat}
+-     */
+-    getCenter: function() { return this.transform.center; },
++var reported = false;
+ 
+-    /**
+-     * Sets a map location. Equivalent to `jumpTo({center: center})`.
+-     *
+-     * @param {LngLat} center Map center to jump to
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setCenter([-74, 38]);
+-     */
+-    setCenter: function(center, eventData) {
+-        this.jumpTo({center: center}, eventData);
+-        return this;
+-    },
++VertexArrayObject.prototype.bind = function(gl, program, vertexBuffer, elementBuffer, vertexBuffer2) {
+ 
+-    /**
+-     * Pan by a certain number of pixels
+-     *
+-     * @param {Array<number>} offset [x, y]
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    panBy: function(offset, options, eventData) {
+-        this.panTo(this.transform.center,
+-            util.extend({offset: Point.convert(offset).mult(-1)}, options), eventData);
+-        return this;
+-    },
++    var ext = gl.extVertexArrayObject;
++    if (ext === undefined) {
++        ext = gl.extVertexArrayObject = gl.getExtension("OES_vertex_array_object");
++    }
+ 
+-    /**
+-     * Pan to a certain location with easing
+-     *
+-     * @param {LngLat} lnglat Location to pan to
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    panTo: function(lnglat, options, eventData) {
+-        return this.easeTo(util.extend({
+-            center: lnglat
+-        }, options), eventData);
+-    },
++    if (ext) {
++        if (!this.vao) this.vao = ext.createVertexArrayOES();
++        ext.bindVertexArrayOES(this.vao);
++    } else if (!reported) {
++        console.warn('Not using VertexArrayObject extension.');
++        reported = true;
++    }
+ 
++    if (!this.boundProgram) {
+ 
+-    /**
+-     * Get the current zoom
+-     * @returns {number}
+-     */
+-    getZoom: function() { return this.transform.zoom; },
++        var numPrevAttributes = ext ? 0 : (gl.currentNumAttributes || 0);
++        var numNextAttributes = program.numAttributes;
++        var i;
+ 
+-    /**
+-     * Sets a map zoom. Equivalent to `jumpTo({zoom: zoom})`.
+-     *
+-     * @param {number} zoom Map zoom level
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     * @example
+-     * // zoom the map to 5
+-     * map.setZoom(5);
+-     */
+-    setZoom: function(zoom, eventData) {
+-        this.jumpTo({zoom: zoom}, eventData);
+-        return this;
+-    },
++        // Enable all attributes for the new program.
++        for (i = numPrevAttributes; i < numNextAttributes; i++) {
++            gl.enableVertexAttribArray(i);
++        }
+ 
+-    /**
+-     * Zooms to a certain zoom level with easing.
+-     *
+-     * @param {number} zoom
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     */
+-    zoomTo: function(zoom, options, eventData) {
+-        return this.easeTo(util.extend({
+-            zoom: zoom
+-        }, options), eventData);
+-    },
++        if (!ext) {
++            // Disable all attributes from the previous program that aren't used in
++            // the new program. Note: attribute indices are *not* program specific!
++            // WebGL breaks if you disable attribute 0. http://stackoverflow.com/questions/20305231
++            assert(i > 0);
++            for (i = numNextAttributes; i < numPrevAttributes; i++) {
++                gl.disableVertexAttribArray(i);
++            }
++            gl.currentNumAttributes = numNextAttributes;
++        }
+ 
+-    /**
+-     * Zoom in by 1 level
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     */
+-    zoomIn: function(options, eventData) {
+-        this.zoomTo(this.getZoom() + 1, options, eventData);
+-        return this;
+-    },
++        vertexBuffer.bind(gl);
++        vertexBuffer.setVertexAttribPointers(gl, program);
++        if (vertexBuffer2) {
++            vertexBuffer2.bind(gl);
++            vertexBuffer2.setVertexAttribPointers(gl, program);
++        }
++        if (elementBuffer) {
++            elementBuffer.bind(gl);
++        }
+ 
+-    /**
+-     * Zoom out by 1 level
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires moveend
+-     * @fires zoomend
+-     * @returns {Map} `this`
+-     */
+-    zoomOut: function(options, eventData) {
+-        this.zoomTo(this.getZoom() - 1, options, eventData);
+-        return this;
+-    },
++        if (ext) {
++            // store the arguments so that we can verify them when the vao is bound again
++            this.boundProgram = program;
++            this.boundVertexBuffer = vertexBuffer;
++            this.boundVertexBuffer2 = vertexBuffer2;
++            this.boundElementBuffer = elementBuffer;
++        }
+ 
++    } else {
++        // verify that bind was called with the same arguments
++        assert(this.boundProgram === program, 'trying to bind a VAO to a different shader');
++        assert(this.boundVertexBuffer === vertexBuffer, 'trying to bind a VAO to a different vertex buffer');
++        assert(this.boundVertexBuffer2 === vertexBuffer2, 'trying to bind a VAO to a different vertex buffer');
++        assert(this.boundElementBuffer === elementBuffer, 'trying to bind a VAO to a different element buffer');
++    }
++};
+ 
+-    /**
+-     * Get the current bearing in degrees
+-     * @returns {number}
+-     */
+-    getBearing: function() { return this.transform.bearing; },
++VertexArrayObject.prototype.unbind = function(gl) {
++    var ext = gl.extVertexArrayObject;
++    if (ext) {
++        ext.bindVertexArrayOES(null);
++    }
++};
+ 
+-    /**
+-     * Sets a map rotation. Equivalent to `jumpTo({bearing: bearing})`.
+-     *
+-     * @param {number} bearing Map rotation bearing in degrees counter-clockwise from north
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     * @example
+-     * // rotate the map to 90 degrees
+-     * map.setBearing(90);
+-     */
+-    setBearing: function(bearing, eventData) {
+-        this.jumpTo({bearing: bearing}, eventData);
+-        return this;
+-    },
++VertexArrayObject.prototype.destroy = function(gl) {
++    var ext = gl.extVertexArrayObject;
++    if (ext && this.vao) {
++        ext.deleteVertexArrayOES(this.vao);
++        this.vao = null;
++    }
++};
+ 
+-    /**
+-     * Rotate bearing by a certain number of degrees with easing
+-     *
+-     * @param {number} bearing
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    rotateTo: function(bearing, options, eventData) {
+-        return this.easeTo(util.extend({
+-            bearing: bearing
+-        }, options), eventData);
+-    },
++},{"assert":29}],287:[function(require,module,exports){
++'use strict';
+ 
+-    /**
+-     * Sets map bearing to 0 (north) with easing
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    resetNorth: function(options, eventData) {
+-        this.rotateTo(0, util.extend({duration: 1000}, options), eventData);
+-        return this;
+-    },
++var util = require('../util/util');
++var Evented = require('../util/evented');
++var TilePyramid = require('./tile_pyramid');
++var Source = require('./source');
++var urlResolve = require('resolve-url');
++var EXTENT = require('../data/bucket').EXTENT;
+ 
+-    /**
+-     * Animates map bearing to 0 (north) if it's already close to it.
+-     *
+-     * @param {AnimationOptions} [options]
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    snapToNorth: function(options, eventData) {
+-        if (Math.abs(this.getBearing()) < this.options.bearingSnap) {
+-            return this.resetNorth(options, eventData);
+-        }
+-        return this;
+-    },
++module.exports = GeoJSONSource;
+ 
+-    /**
+-     * Get the current angle in degrees
+-     * @returns {number}
+-     */
+-    getPitch: function() { return this.transform.pitch; },
++/**
++ * Create a GeoJSON data source instance given an options object
++ * @class GeoJSONSource
++ * @param {Object} [options]
++ * @param {Object|string} options.data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
++ * @param {number} [options.maxzoom=18] Maximum zoom to preserve detail at.
++ * @param {number} [options.buffer] Tile buffer on each side in pixels.
++ * @param {number} [options.tolerance] Simplification tolerance (higher means simpler) in pixels.
++ * @param {number} [options.cluster] If the data is a collection of point features, setting this to true clusters the points by radius into groups.
++ * @param {number} [options.clusterRadius=50] Radius of each cluster when clustering points, in pixels.
++ * @param {number} [options.clusterMaxZoom] Max zoom to cluster points on. Defaults to one zoom less than `maxzoom` (so that last zoom features are not clustered).
+ 
+-    /**
+-     * Sets a map angle. Equivalent to `jumpTo({pitch: pitch})`.
+-     *
+-     * @param {number} pitch The angle at which the camera is looking at the ground
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    setPitch: function(pitch, eventData) {
+-        this.jumpTo({pitch: pitch}, eventData);
+-        return this;
+-    },
++ * @example
++ * var sourceObj = new mapboxgl.GeoJSONSource({
++ *    data: {
++ *        "type": "FeatureCollection",
++ *        "features": [{
++ *            "type": "Feature",
++ *            "geometry": {
++ *                "type": "Point",
++ *                "coordinates": [
++ *                    -76.53063297271729,
++ *                    39.18174077994108
++ *                ]
++ *            }
++ *        }]
++ *    }
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
++ */
++function GeoJSONSource(options) {
++    options = options || {};
+ 
++    this._data = options.data;
+ 
+-    /**
+-     * Zoom to contain certain geographical bounds
+-     *
+-     * @param {LngLatBounds|Array<Array<number>>} bounds [[minLng, minLat], [maxLng, maxLat]]
+-     * @param {Object} options
+-     * @param {boolean} [options.linear] When true, the map transitions to the new camera using
+-     *     {@link #Map.easeTo}. When false, the map transitions using {@link #Map.flyTo}. See
+-     *     {@link #Map.flyTo} for information on options specific to that animation transition.
+-     * @param {Function} options.easing
+-     * @param {number} options.padding how much padding there is around the given bounds on each side in pixels
+-     * @param {number} options.maxZoom The resulting zoom level will be at most
+-     *     this value.
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    fitBounds: function(bounds, options, eventData) {
++    if (options.maxzoom !== undefined) this.maxzoom = options.maxzoom;
+ 
+-        options = util.extend({
+-            padding: 0,
+-            offset: [0, 0],
+-            maxZoom: Infinity
+-        }, options);
++    var scale = EXTENT / this.tileSize;
+ 
+-        bounds = LngLatBounds.convert(bounds);
++    this.geojsonVtOptions = {
++        buffer: (options.buffer !== undefined ? options.buffer : 128) * scale,
++        tolerance: (options.tolerance !== undefined ? options.tolerance : 0.375) * scale,
++        extent: EXTENT,
++        maxZoom: this.maxzoom
++    };
+ 
+-        var offset = Point.convert(options.offset),
+-            tr = this.transform,
+-            nw = tr.project(bounds.getNorthWest()),
+-            se = tr.project(bounds.getSouthEast()),
+-            size = se.sub(nw),
+-            scaleX = (tr.width - options.padding * 2 - Math.abs(offset.x) * 2) / size.x,
+-            scaleY = (tr.height - options.padding * 2 - Math.abs(offset.y) * 2) / size.y;
++    this.cluster = options.cluster || false;
++    this.superclusterOptions = {
++        maxZoom: Math.min(options.clusterMaxZoom, this.maxzoom - 1) || (this.maxzoom - 1),
++        extent: EXTENT,
++        radius: (options.clusterRadius || 50) * scale,
++        log: false
++    };
+ 
+-        options.center = tr.unproject(nw.add(se).div(2));
+-        options.zoom = Math.min(tr.scaleZoom(tr.scale * Math.min(scaleX, scaleY)), options.maxZoom);
+-        options.bearing = 0;
++    this._pyramid = new TilePyramid({
++        tileSize: this.tileSize,
++        minzoom: this.minzoom,
++        maxzoom: this.maxzoom,
++        reparseOverscaled: true,
++        load: this._loadTile.bind(this),
++        abort: this._abortTile.bind(this),
++        unload: this._unloadTile.bind(this),
++        add: this._addTile.bind(this),
++        remove: this._removeTile.bind(this),
++        redoPlacement: this._redoTilePlacement.bind(this)
++    });
++}
+ 
+-        return options.linear ?
+-            this.easeTo(options, eventData) :
+-            this.flyTo(options, eventData);
+-    },
++GeoJSONSource.prototype = util.inherit(Evented, /** @lends GeoJSONSource.prototype */{
++    minzoom: 0,
++    maxzoom: 18,
++    tileSize: 512,
++    _dirty: true,
++    isTileClipped: true,
+ 
+     /**
+-     * Change any combination of center, zoom, bearing, and pitch, without
+-     * a transition. The map will retain the current values for any options
+-     * not included in `options`.
++     * Update source geojson data and rerender map
+      *
+-     * @param {CameraOptions} options map view options
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires rotate
+-     * @fires pitch
+-     * @fires zoomend
+-     * @fires moveend
+-     * @returns {Map} `this`
++     * @param {Object|string} data A GeoJSON data object or URL to it. The latter is preferable in case of large GeoJSON files.
++     * @returns {GeoJSONSource} this
+      */
+-    jumpTo: function(options, eventData) {
+-        this.stop();
+-
+-        var tr = this.transform,
+-            zoomChanged = false,
+-            bearingChanged = false,
+-            pitchChanged = false;
++    setData: function(data) {
++        this._data = data;
++        this._dirty = true;
+ 
+-        if ('zoom' in options && tr.zoom !== +options.zoom) {
+-            zoomChanged = true;
+-            tr.zoom = +options.zoom;
+-        }
++        this.fire('change');
+ 
+-        if ('center' in options) {
+-            tr.center = LngLat.convert(options.center);
+-        }
++        if (this.map)
++            this.update(this.map.transform);
+ 
+-        if ('bearing' in options && tr.bearing !== +options.bearing) {
+-            bearingChanged = true;
+-            tr.bearing = +options.bearing;
+-        }
++        return this;
++    },
+ 
+-        if ('pitch' in options && tr.pitch !== +options.pitch) {
+-            pitchChanged = true;
+-            tr.pitch = +options.pitch;
+-        }
++    onAdd: function(map) {
++        this.map = map;
++    },
+ 
+-        this.fire('movestart', eventData)
+-            .fire('move', eventData);
++    loaded: function() {
++        return this._loaded && this._pyramid.loaded();
++    },
+ 
+-        if (zoomChanged) {
+-            this.fire('zoomstart', eventData)
+-                .fire('zoom', eventData)
+-                .fire('zoomend', eventData);
++    update: function(transform) {
++        if (this._dirty) {
++            this._updateData();
+         }
+ 
+-        if (bearingChanged) {
+-            this.fire('rotate', eventData);
++        if (this._loaded) {
++            this._pyramid.update(this.used, transform);
+         }
++    },
+ 
+-        if (pitchChanged) {
+-            this.fire('pitch', eventData);
++    reload: function() {
++        if (this._loaded) {
++            this._pyramid.reload();
+         }
+-
+-        return this.fire('moveend', eventData);
+     },
+ 
+-    /**
+-     * Change any combination of center, zoom, bearing, and pitch, with a smooth animation
+-     * between old and new values. The map will retain the current values for any options
+-     * not included in `options`.
+-     *
+-     * @param {CameraOptions|AnimationOptions} options map view and animation options
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires rotate
+-     * @fires pitch
+-     * @fires zoomend
+-     * @fires moveend
+-     * @returns {Map} `this`
+-     */
+-    easeTo: function(options, eventData) {
+-        this.stop();
+-
+-        options = util.extend({
+-            offset: [0, 0],
+-            duration: 500,
+-            easing: util.ease
+-        }, options);
++    serialize: function() {
++        return {
++            type: 'geojson',
++            data: this._data
++        };
++    },
+ 
+-        var tr = this.transform,
+-            offset = Point.convert(options.offset),
+-            startZoom = this.getZoom(),
+-            startBearing = this.getBearing(),
+-            startPitch = this.getPitch(),
++    getVisibleCoordinates: Source._getVisibleCoordinates,
++    getTile: Source._getTile,
+ 
+-            zoom = 'zoom' in options ? +options.zoom : startZoom,
+-            bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing,
+-            pitch = 'pitch' in options ? +options.pitch : startPitch,
++    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
++    querySourceFeatures: Source._querySourceFeatures,
+ 
+-            toLngLat,
+-            toPoint;
++    _updateData: function() {
++        this._dirty = false;
++        var options = {
++            tileSize: this.tileSize,
++            source: this.id,
++            geojsonVtOptions: this.geojsonVtOptions,
++            cluster: this.cluster,
++            superclusterOptions: this.superclusterOptions
++        };
+ 
+-        if ('center' in options) {
+-            toLngLat = LngLat.convert(options.center);
+-            toPoint = tr.centerPoint.add(offset);
+-        } else if ('around' in options) {
+-            toLngLat = LngLat.convert(options.around);
+-            toPoint = tr.locationPoint(toLngLat);
++        var data = this._data;
++        if (typeof data === 'string') {
++            options.url = typeof window != 'undefined' ? urlResolve(window.location.href, data) : data;
+         } else {
+-            toPoint = tr.centerPoint.add(offset);
+-            toLngLat = tr.pointLocation(toPoint);
++            options.data = JSON.stringify(data);
+         }
++        this.workerID = this.dispatcher.send('parse geojson', options, function(err) {
++            this._loaded = true;
++            if (err) {
++                this.fire('error', {error: err});
++            } else {
++                this._pyramid.reload();
++                this.fire('change');
++            }
+ 
+-        var fromPoint = tr.locationPoint(toLngLat);
++        }.bind(this));
++    },
+ 
+-        if (options.animate === false) options.duration = 0;
++    _loadTile: function(tile) {
++        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
++        var params = {
++            uid: tile.uid,
++            coord: tile.coord,
++            zoom: tile.coord.z,
++            maxZoom: this.maxzoom,
++            tileSize: this.tileSize,
++            source: this.id,
++            overscaling: overscaling,
++            angle: this.map.transform.angle,
++            pitch: this.map.transform.pitch,
++            showCollisionBoxes: this.map.showCollisionBoxes
++        };
+ 
+-        this.zooming = (zoom !== startZoom);
+-        this.rotating = (startBearing !== bearing);
+-        this.pitching = (pitch !== startPitch);
++        tile.workerID = this.dispatcher.send('load geojson tile', params, function(err, data) {
+ 
+-        if (!options.noMoveStart) {
+-            this.fire('movestart', eventData);
+-        }
+-        if (this.zooming) {
+-            this.fire('zoomstart', eventData);
+-        }
++            tile.unloadVectorData(this.map.painter);
+ 
+-        clearTimeout(this._onEaseEnd);
++            if (tile.aborted)
++                return;
+ 
+-        this._ease(function (k) {
+-            if (this.zooming) {
+-                tr.zoom = interpolate(startZoom, zoom, k);
++            if (err) {
++                this.fire('tile.error', {tile: tile});
++                return;
+             }
+ 
+-            if (this.rotating) {
+-                tr.bearing = interpolate(startBearing, bearing, k);
+-            }
++            tile.loadVectorData(data, this.map.style);
+ 
+-            if (this.pitching) {
+-                tr.pitch = interpolate(startPitch, pitch, k);
++            if (tile.redoWhenDone) {
++                tile.redoWhenDone = false;
++                tile.redoPlacement(this);
+             }
+ 
+-            tr.setLocationAtPoint(toLngLat, fromPoint.add(toPoint.sub(fromPoint)._mult(k)));
++            this.fire('tile.load', {tile: tile});
+ 
+-            this.fire('move', eventData);
+-            if (this.zooming) {
+-                this.fire('zoom', eventData);
+-            }
+-            if (this.rotating) {
+-                this.fire('rotate', eventData);
+-            }
+-            if (this.pitching) {
+-                this.fire('pitch', eventData);
+-            }
+-        }, function() {
+-            if (options.delayEndEvents) {
+-                this._onEaseEnd = setTimeout(this._easeToEnd.bind(this, eventData), options.delayEndEvents);
+-            } else {
+-                this._easeToEnd(eventData);
+-            }
+-        }.bind(this), options);
++        }.bind(this), this.workerID);
++    },
+ 
+-        return this;
++    _abortTile: function(tile) {
++        tile.aborted = true;
+     },
+ 
+-    _easeToEnd: function(eventData) {
+-        if (this.zooming) {
+-            this.fire('zoomend', eventData);
+-        }
+-        this.fire('moveend', eventData);
++    _addTile: function(tile) {
++        this.fire('tile.add', {tile: tile});
++    },
+ 
+-        this.zooming = false;
+-        this.rotating = false;
+-        this.pitching = false;
++    _removeTile: function(tile) {
++        this.fire('tile.remove', {tile: tile});
+     },
+ 
+-    /**
+-     * Change any combination of center, zoom, bearing, and pitch, animated along a curve that
+-     * evokes flight. The transition animation seamlessly incorporates zooming and panning to help
+-     * the user find his or her bearings even after traversing a great distance.
+-     *
+-     * @param {CameraOptions|AnimationOptions} options map view and animation options
+-     * @param {number} [options.curve=1.42] Relative amount of zooming that takes place along the
+-     *     flight path. A high value maximizes zooming for an exaggerated animation, while a low
+-     *     value minimizes zooming for something closer to {@link #Map.easeTo}. 1.42 is the average
+-     *     value selected by participants in the user study in
+-     *     [van Wijk (2003)](https://www.win.tue.nl/~vanwijk/zoompan.pdf). A value of
+-     *     `Math.pow(6, 0.25)` would be equivalent to the root mean squared average velocity. A
+-     *     value of 1 would produce a circular motion.
+-     * @param {number} [options.minZoom] Zero-based zoom level at the peak of the flight path. If
+-     *     `options.curve` is specified, this option is ignored.
+-     * @param {number} [options.speed=1.2] Average speed of the animation. A speed of 1.2 means that
+-     *     the map appears to move along the flight path by 1.2 times `options.curve` screenfuls every
+-     *     second. A _screenful_ is the visible span in pixels. It does not correspond to a fixed
+-     *     physical distance but rather varies by zoom level.
+-     * @param {number} [options.screenSpeed] Average speed of the animation, measured in screenfuls
+-     *     per second, assuming a linear timing curve. If `options.speed` is specified, this option
+-     *     is ignored.
+-     * @param {Function} [options.easing] Transition timing curve
+-     * @param {EventData} [eventData] Data to propagate to any event receivers
+-     * @fires movestart
+-     * @fires zoomstart
+-     * @fires move
+-     * @fires zoom
+-     * @fires rotate
+-     * @fires pitch
+-     * @fires zoomend
+-     * @fires moveend
+-     * @returns {this}
+-     * @example
+-     * // fly with default options to null island
+-     * map.flyTo({center: [0, 0], zoom: 9});
+-     * // using flyTo options
+-     * map.flyTo({
+-     *   center: [0, 0],
+-     *   zoom: 9,
+-     *   speed: 0.2,
+-     *   curve: 1,
+-     *   easing: function(t) {
+-     *     return t;
+-     *   }
+-     * });
+-     */
+-    flyTo: function(options, eventData) {
+-        // This method implements an “optimal path” animation, as detailed in:
+-        //
+-        // Van Wijk, Jarke J.; Nuij, Wim A. A. “Smooth and efficient zooming and panning.” INFOVIS
+-        //   ’03. pp. 15–22. <https://www.win.tue.nl/~vanwijk/zoompan.pdf#page=5>.
+-        //
+-        // Where applicable, local variable documentation begins with the associated variable or
+-        // function in van Wijk (2003).
++    _unloadTile: function(tile) {
++        tile.unloadVectorData(this.map.painter);
++        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    },
+ 
+-        this.stop();
++    redoPlacement: Source.redoPlacement,
+ 
+-        options = util.extend({
+-            offset: [0, 0],
+-            speed: 1.2,
+-            curve: 1.42,
+-            easing: util.ease
+-        }, options);
++    _redoTilePlacement: function(tile) {
++        tile.redoPlacement(this);
++    }
++});
+ 
+-        var tr = this.transform,
+-            offset = Point.convert(options.offset),
+-            startZoom = this.getZoom(),
+-            startBearing = this.getBearing(),
+-            startPitch = this.getPitch();
++},{"../data/bucket":260,"../util/evented":354,"../util/util":362,"./source":292,"./tile_pyramid":295,"resolve-url":411}],288:[function(require,module,exports){
++'use strict';
+ 
+-        var center = 'center' in options ? LngLat.convert(options.center) : this.getCenter();
+-        var zoom = 'zoom' in options ?  +options.zoom : startZoom;
+-        var bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing;
+-        var pitch = 'pitch' in options ? +options.pitch : startPitch;
++var Point = require('point-geometry');
++var VectorTileFeature = require('vector-tile').VectorTileFeature;
++var EXTENT = require('../data/bucket').EXTENT;
+ 
+-        // If a path crossing the antimeridian would be shorter, extend the final coordinate so that
+-        // interpolating between the two endpoints will cross it.
+-        if (Math.abs(tr.center.lng) + Math.abs(center.lng) > 180) {
+-            if (tr.center.lng > 0 && center.lng < 0) {
+-                center.lng += 360;
+-            } else if (tr.center.lng < 0 && center.lng > 0) {
+-                center.lng -= 360;
+-            }
+-        }
++module.exports = GeoJSONWrapper;
+ 
+-        var scale = tr.zoomScale(zoom - startZoom),
+-            from = tr.point,
+-            to = 'center' in options ? tr.project(center).sub(offset.div(scale)) : from;
++// conform to vectortile api
++function GeoJSONWrapper(features) {
++    this.features = features;
++    this.length = features.length;
++    this.extent = EXTENT;
++}
+ 
+-        var startWorldSize = tr.worldSize,
+-            rho = options.curve,
++GeoJSONWrapper.prototype.feature = function(i) {
++    return new FeatureWrapper(this.features[i]);
++};
+ 
+-            // w₀: Initial visible span, measured in pixels at the initial scale.
+-            w0 = Math.max(tr.width, tr.height),
+-            // w₁: Final visible span, measured in pixels with respect to the initial scale.
+-            w1 = w0 / scale,
+-            // Length of the flight path as projected onto the ground plane, measured in pixels from
+-            // the world image origin at the initial scale.
+-            u1 = to.sub(from).mag();
++function FeatureWrapper(feature) {
++    this.type = feature.type;
++    this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry;
++    this.properties = feature.tags;
++    this.extent = EXTENT;
++}
+ 
+-        if ('minZoom' in options) {
+-            var minZoom = util.clamp(Math.min(options.minZoom, startZoom, zoom), tr.minZoom, tr.maxZoom);
+-            // w<sub>m</sub>: Maximum visible span, measured in pixels with respect to the initial
+-            // scale.
+-            var wMax = w0 / tr.zoomScale(minZoom - startZoom);
+-            rho = Math.sqrt(wMax / u1 * 2);
++FeatureWrapper.prototype.loadGeometry = function() {
++    var rings = this.rawGeometry;
++    this.geometry = [];
++
++    for (var i = 0; i < rings.length; i++) {
++        var ring = rings[i],
++            newRing = [];
++        for (var j = 0; j < ring.length; j++) {
++            newRing.push(new Point(ring[j][0], ring[j][1]));
+         }
++        this.geometry.push(newRing);
++    }
++    return this.geometry;
++};
+ 
+-        // ρ²
+-        var rho2 = rho * rho;
++FeatureWrapper.prototype.bbox = function() {
++    if (!this.geometry) this.loadGeometry();
+ 
+-        /**
+-         * rᵢ: Returns the zoom-out factor at one end of the animation.
+-         *
+-         * @param i 0 for the ascent or 1 for the descent.
+-         * @private
+-         */
+-        function r(i) {
+-            var b = (w1 * w1 - w0 * w0 + (i ? -1 : 1) * rho2 * rho2 * u1 * u1) / (2 * (i ? w1 : w0) * rho2 * u1);
+-            return Math.log(Math.sqrt(b * b + 1) - b);
++    var rings = this.geometry,
++        x1 = Infinity,
++        x2 = -Infinity,
++        y1 = Infinity,
++        y2 = -Infinity;
++
++    for (var i = 0; i < rings.length; i++) {
++        var ring = rings[i];
++
++        for (var j = 0; j < ring.length; j++) {
++            var coord = ring[j];
++
++            x1 = Math.min(x1, coord.x);
++            x2 = Math.max(x2, coord.x);
++            y1 = Math.min(y1, coord.y);
++            y2 = Math.max(y2, coord.y);
+         }
++    }
+ 
+-        function sinh(n) { return (Math.exp(n) - Math.exp(-n)) / 2; }
+-        function cosh(n) { return (Math.exp(n) + Math.exp(-n)) / 2; }
+-        function tanh(n) { return sinh(n) / cosh(n); }
++    return [x1, y1, x2, y2];
++};
+ 
+-        // r₀: Zoom-out factor during ascent.
+-        var r0 = r(0),
+-            /**
+-             * w(s): Returns the visible span on the ground, measured in pixels with respect to the
+-             * initial scale.
+-             *
+-             * Assumes an angular field of view of 2 arctan ½ ≈ 53°.
+-             * @private
+-             */
+-            w = function (s) { return (cosh(r0) / cosh(r0 + rho * s)); },
+-            /**
+-             * u(s): Returns the distance along the flight path as projected onto the ground plane,
+-             * measured in pixels from the world image origin at the initial scale.
+-             * @private
+-             */
+-            u = function (s) { return w0 * ((cosh(r0) * tanh(r0 + rho * s) - sinh(r0)) / rho2) / u1; },
+-            // S: Total length of the flight path, measured in ρ-screenfuls.
+-            S = (r(1) - r0) / rho;
++FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON;
+ 
+-        // When u₀ = u₁, the optimal path doesn’t require both ascent and descent.
+-        if (Math.abs(u1) < 0.000001) {
+-            // Perform a more or less instantaneous transition if the path is too short.
+-            if (Math.abs(w0 - w1) < 0.000001) return this.easeTo(options);
++},{"../data/bucket":260,"point-geometry":400,"vector-tile":456}],289:[function(require,module,exports){
++'use strict';
+ 
+-            var k = w1 < w0 ? -1 : 1;
+-            S = Math.abs(Math.log(w1 / w0)) / rho;
++var util = require('../util/util');
++var Tile = require('./tile');
++var TileCoord = require('./tile_coord');
++var LngLat = require('../geo/lng_lat');
++var Point = require('point-geometry');
++var Evented = require('../util/evented');
++var ajax = require('../util/ajax');
++var EXTENT = require('../data/bucket').EXTENT;
++var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('../render/vertex_array_object');
+ 
+-            u = function() { return 0; };
+-            w = function(s) { return Math.exp(k * rho * s); };
++module.exports = ImageSource;
++
++/**
++ * Create an Image source instance given an options object
++ * @class ImageSource
++ * @param {Object} [options]
++ * @param {string} options.url A string URL of an image file
++ * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
++ * @example
++ * var sourceObj = new mapboxgl.ImageSource({
++ *    url: 'https://www.mapbox.com/images/foo.png',
++ *    coordinates: [
++ *        [-76.54335737228394, 39.18579907229748],
++ *        [-76.52803659439087, 39.1838364847587],
++ *        [-76.5295386314392, 39.17683392507606],
++ *        [-76.54520273208618, 39.17876344106642]
++ *    ]
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
++ */
++function ImageSource(options) {
++    this.urls = options.urls;
++    this.coordinates = options.coordinates;
++
++    ajax.getImage(options.url, function(err, image) {
++        // @TODO handle errors via event.
++        if (err) return;
++
++        this.image = image;
++
++        this.image.addEventListener('load', function() {
++            this.map._rerender();
++        }.bind(this));
++
++        this._loaded = true;
++
++        if (this.map) {
++            this.setCoordinates(options.coordinates);
+         }
++    }.bind(this));
++}
+ 
+-        if ('duration' in options) {
+-            options.duration = +options.duration;
+-        } else {
+-            var V = 'screenSpeed' in options ? +options.screenSpeed / rho : +options.speed;
+-            options.duration = 1000 * S / V;
++ImageSource.prototype = util.inherit(Evented, /** @lends ImageSource.prototype */ {
++    onAdd: function(map) {
++        this.map = map;
++        if (this.image) {
++            this.setCoordinates(this.coordinates);
+         }
++    },
+ 
+-        this.zooming = true;
+-        if (startBearing !== bearing) this.rotating = true;
+-        if (startPitch !== pitch) this.pitching = true;
++    /**
++     * Update image coordinates and rerender map
++     *
++     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the image. Does not have to be a rectangle.
++     * @returns {ImageSource} this
++     */
++    setCoordinates: function(coordinates) {
++        this.coordinates = coordinates;
+ 
+-        this.fire('movestart', eventData);
+-        this.fire('zoomstart', eventData);
++        // Calculate which mercator tile is suitable for rendering the image in
++        // and create a buffer with the corner coordinates. These coordinates
++        // may be outside the tile, because raster tiles aren't clipped when rendering.
+ 
+-        this._ease(function (k) {
+-            // s: The distance traveled along the flight path, measured in ρ-screenfuls.
+-            var s = k * S,
+-                us = u(s);
++        var map = this.map;
++        var cornerZ0Coords = coordinates.map(function(coord) {
++            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
++        });
+ 
+-            tr.zoom = startZoom + tr.scaleZoom(1 / w(s));
+-            tr.center = tr.unproject(from.add(to.sub(from).mult(us)), startWorldSize);
++        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
++        centerCoord.column = Math.round(centerCoord.column);
++        centerCoord.row = Math.round(centerCoord.row);
+ 
+-            if (this.rotating) {
+-                tr.bearing = interpolate(startBearing, bearing, k);
+-            }
+-            if (this.pitching) {
+-                tr.pitch = interpolate(startPitch, pitch, k);
+-            }
++        var tileCoords = cornerZ0Coords.map(function(coord) {
++            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
++            return new Point(
++                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
++                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
++        });
+ 
+-            this.fire('move', eventData);
+-            this.fire('zoom', eventData);
+-            if (this.rotating) {
+-                this.fire('rotate', eventData);
+-            }
+-            if (this.pitching) {
+-                this.fire('pitch', eventData);
+-            }
+-        }, function() {
+-            this.fire('zoomend', eventData);
+-            this.fire('moveend', eventData);
+-            this.zooming = false;
+-            this.rotating = false;
+-            this.pitching = false;
+-        }, options);
++        var maxInt16 = 32767;
++        var array = new RasterBoundsArray();
++        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
++        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
++        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
++        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
+ 
+-        return this;
+-    },
++        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
++        this.tile.buckets = {};
+ 
+-    isEasing: function() {
+-        return !!this._abortFn;
+-    },
++        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
++        this.tile.boundsVAO = new VertexArrayObject();
++
++        this.fire('change');
+ 
+-    /**
+-     * Stop current animation
+-     *
+-     * @returns {Map} `this`
+-     */
+-    stop: function() {
+-        if (this._abortFn) {
+-            this._abortFn();
+-            this._finishEase();
+-        }
+         return this;
+     },
+ 
+-    _ease: function(frame, finish, options) {
+-        this._finishFn = finish;
+-        this._abortFn = browser.timed(function (t) {
+-            frame.call(this, options.easing(t));
+-            if (t === 1) {
+-                this._finishEase();
+-            }
+-        }, options.animate === false ? 0 : options.duration, this);
++    loaded: function() {
++        return this.image && this.image.complete;
+     },
+ 
+-    _finishEase: function() {
+-        delete this._abortFn;
+-        // The finish function might emit events which trigger new eases, which
+-        // set a new _finishFn. Ensure we don't delete it unintentionally.
+-        var finish = this._finishFn;
+-        delete this._finishFn;
+-        finish.call(this);
++    update: function() {
++        // noop
+     },
+ 
+-    // convert bearing so that it's numerically close to the current one so that it interpolates properly
+-    _normalizeBearing: function(bearing, currentBearing) {
+-        bearing = util.wrap(bearing, -180, 180);
+-        var diff = Math.abs(bearing - currentBearing);
+-        if (Math.abs(bearing - 360 - currentBearing) < diff) bearing -= 360;
+-        if (Math.abs(bearing + 360 - currentBearing) < diff) bearing += 360;
+-        return bearing;
++    reload: function() {
++        // noop
+     },
+ 
+-    _updateEasing: function(duration, zoom, bezier) {
+-        var easing;
+-
+-        if (this.ease) {
+-            var ease = this.ease,
+-                t = (Date.now() - ease.start) / ease.duration,
+-                speed = ease.easing(t + 0.01) - ease.easing(t),
++    prepare: function() {
++        if (!this._loaded || !this.loaded()) return;
+ 
+-                // Quick hack to make new bezier that is continuous with last
+-                x = 0.27 / Math.sqrt(speed * speed + 0.0001) * 0.01,
+-                y = Math.sqrt(0.27 * 0.27 - x * x);
++        var painter = this.map.painter;
++        var gl = painter.gl;
+ 
+-            easing = util.bezier(x, y, 0.25, 1);
++        if (!this.tile.texture) {
++            this.tile.texture = gl.createTexture();
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
+         } else {
+-            easing = bezier ? util.bezier.apply(util, bezier) : util.ease;
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
+         }
++    },
+ 
+-        // store information on current easing
+-        this.ease = {
+-            start: (new Date()).getTime(),
+-            to: Math.pow(2, zoom),
+-            duration: duration,
+-            easing: easing
+-        };
++    getVisibleCoordinates: function() {
++        if (this.tile) return [this.tile.coord];
++        else return [];
++    },
+ 
+-        return easing;
++    getTile: function() {
++        return this.tile;
++    },
++
++    serialize: function() {
++        return {
++            type: 'image',
++            urls: this.urls,
++            coordinates: this.coordinates
++        };
+     }
+ });
+ 
++},{"../data/bucket":260,"../data/buffer":265,"../geo/lng_lat":269,"../render/draw_raster":280,"../render/vertex_array_object":286,"../util/ajax":347,"../util/evented":354,"../util/util":362,"./tile":293,"./tile_coord":294,"point-geometry":400}],290:[function(require,module,exports){
++'use strict';
++
++var Bucket = require('../data/bucket');
++
+ /**
+- * Pitch event. This event is emitted whenever the map's pitch changes.
++ * Converts a pixel value at a the given zoom level to tile units.
+  *
+- * @event pitch
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
++ * The shaders mostly calculate everything in tile units so style
++ * properties need to be converted from pixels to tile units using this.
++ *
++ * For example, a translation by 30 pixels at zoom 6.5 will be a
++ * translation by pixelsToTileUnits(30, 6.5) tile units.
++ *
++ * @param {object} tile a {Tile object} will work well, but any object that follows the format {coord: {TileCord object}, tileSize: {number}} will work
++ * @param {number} pixelValue
++ * @param {number} z
++ * @returns {number} value in tile units
++ * @private
+  */
++module.exports = function(tile, pixelValue, z) {
++    return pixelValue * (Bucket.EXTENT / (tile.tileSize * Math.pow(2, z - tile.coord.z)));
++};
+ 
+-},{"../geo/lng_lat":256,"../geo/lng_lat_bounds":257,"../util/browser":335,"../util/interpolate":343,"../util/util":349,"point-geometry":404}],318:[function(require,module,exports){
++
++},{"../data/bucket":260}],291:[function(require,module,exports){
+ 'use strict';
+ 
+-var Control = require('./control');
+-var DOM = require('../../util/dom');
+-var util = require('../../util/util');
++var util = require('../util/util');
++var ajax = require('../util/ajax');
++var Evented = require('../util/evented');
++var Source = require('./source');
++var normalizeURL = require('../util/mapbox').normalizeTileURL;
+ 
+-module.exports = Attribution;
++module.exports = RasterTileSource;
+ 
+-/**
+- * Creates an attribution control
+- * @class Attribution
+- * @param {Object} [options]
+- * @param {string} [options.position='bottom-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
+- * @example
+- * var map = new mapboxgl.Map({attributionControl: false})
+- *     .addControl(new mapboxgl.Attribution({position: 'top-left'}));
+- */
+-function Attribution(options) {
+-    util.setOptions(this, options);
++function RasterTileSource(options) {
++    util.extend(this, util.pick(options, ['url', 'tileSize']));
++
++    Source._loadTileJSON.call(this, options);
+ }
+ 
+-Attribution.createAttributionString = function(sources) {
+-    var attributions = [];
++RasterTileSource.prototype = util.inherit(Evented, {
++    minzoom: 0,
++    maxzoom: 22,
++    roundZoom: true,
++    tileSize: 512,
++    _loaded: false,
+ 
+-    for (var id in sources) {
+-        var source = sources[id];
+-        if (source.attribution && attributions.indexOf(source.attribution) < 0) {
+-            attributions.push(source.attribution);
+-        }
+-    }
++    onAdd: function(map) {
++        this.map = map;
++    },
+ 
+-    // remove any entries that are substrings of another entry.
+-    // first sort by length so that substrings come first
+-    attributions.sort(function (a, b) { return a.length - b.length; });
+-    attributions = attributions.filter(function (attrib, i) {
+-        for (var j = i + 1; j < attributions.length; j++) {
+-            if (attributions[j].indexOf(attrib) >= 0) { return false; }
++    loaded: function() {
++        return this._pyramid && this._pyramid.loaded();
++    },
++
++    update: function(transform) {
++        if (this._pyramid) {
++            this._pyramid.update(this.used, transform, this.map.style.rasterFadeDuration);
+         }
+-        return true;
+-    });
++    },
+ 
+-    return attributions.join(' | ');
+-};
++    reload: function() {
++        // noop
++    },
+ 
+-Attribution.prototype = util.inherit(Control, {
+-    options: {
+-        position: 'bottom-right'
++    serialize: function() {
++        return {
++            type: 'raster',
++            url: this.url,
++            tileSize: this.tileSize
++        };
+     },
+ 
+-    onAdd: function(map) {
+-        var className = 'mapboxgl-ctrl-attrib',
+-            container = this._container = DOM.create('div', className, map.getContainer());
++    getVisibleCoordinates: Source._getVisibleCoordinates,
++    getTile: Source._getTile,
+ 
+-        this._update();
+-        map.on('source.load', this._update.bind(this));
+-        map.on('source.change', this._update.bind(this));
+-        map.on('source.remove', this._update.bind(this));
+-        map.on('moveend', this._updateEditLink.bind(this));
++    _loadTile: function(tile) {
++        var url = normalizeURL(tile.coord.url(this.tiles), this.url, this.tileSize);
+ 
+-        return container;
++        tile.request = ajax.getImage(url, done.bind(this));
++
++        function done(err, img) {
++            delete tile.request;
++
++            if (tile.aborted)
++                return;
++
++            if (err) {
++                tile.errored = true;
++                this.fire('tile.error', {tile: tile, error: err});
++                return;
++            }
++
++            var gl = this.map.painter.gl;
++            tile.texture = this.map.painter.getTexture(img.width);
++            if (tile.texture) {
++                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
++                gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, img);
++            } else {
++                tile.texture = gl.createTexture();
++                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++                gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
++                gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, img);
++                tile.texture.size = img.width;
++            }
++            gl.generateMipmap(gl.TEXTURE_2D);
++
++            tile.timeAdded = new Date().getTime();
++            this.map.animationLoop.set(this.style.rasterFadeDuration);
++
++            tile.source = this;
++            tile.loaded = true;
++
++            this.fire('tile.load', {tile: tile});
++        }
+     },
+ 
+-    _update: function() {
+-        if (this._map.style) {
+-            this._container.innerHTML = Attribution.createAttributionString(this._map.style.sources);
++    _abortTile: function(tile) {
++        tile.aborted = true;
++
++        if (tile.request) {
++            tile.request.abort();
++            delete tile.request;
+         }
++    },
+ 
+-        this._editLink = this._container.getElementsByClassName('mapbox-improve-map')[0];
+-        this._updateEditLink();
++    _addTile: function(tile) {
++        this.fire('tile.add', {tile: tile});
+     },
+ 
+-    _updateEditLink: function() {
+-        if (this._editLink) {
+-            var center = this._map.getCenter();
+-            this._editLink.href = 'https://www.mapbox.com/map-feedback/#/' +
+-                    center.lng + '/' + center.lat + '/' + Math.round(this._map.getZoom() + 1);
+-        }
++    _removeTile: function(tile) {
++        this.fire('tile.remove', {tile: tile});
++    },
++
++    _unloadTile: function(tile) {
++        if (tile.texture) this.map.painter.saveTexture(tile.texture);
+     }
+ });
+ 
+-},{"../../util/dom":338,"../../util/util":349,"./control":319}],319:[function(require,module,exports){
++},{"../util/ajax":347,"../util/evented":354,"../util/mapbox":359,"../util/util":362,"./source":292}],292:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = Control;
++var util = require('../util/util');
++var ajax = require('../util/ajax');
++var browser = require('../util/browser');
++var TilePyramid = require('./tile_pyramid');
++var normalizeURL = require('../util/mapbox').normalizeSourceURL;
++var TileCoord = require('./tile_coord');
+ 
+-/**
+- * A base class for map-related interface elements.
+- *
+- * @class Control
+- */
+-function Control() {}
++exports._loadTileJSON = function(options) {
++    var loaded = function(err, tileJSON) {
++        if (err) {
++            this.fire('error', {error: err});
++            return;
++        }
+ 
+-Control.prototype = {
+-    /**
+-     * Add this control to the map, returning the control itself
+-     * for chaining. This will insert the control's DOM element into
+-     * the map's DOM element if the control has a `position` specified.
+-     *
+-     * @param {Map} map
+-     * @returns {Control} `this`
+-     */
+-    addTo: function(map) {
+-        this._map = map;
+-        var container = this._container = this.onAdd(map);
+-        if (this.options && this.options.position) {
+-            var pos = this.options.position;
+-            var corner = map._controlCorners[pos];
+-            container.className += ' mapboxgl-ctrl';
+-            if (pos.indexOf('bottom') !== -1) {
+-                corner.insertBefore(container, corner.firstChild);
+-            } else {
+-                corner.appendChild(container);
+-            }
++        util.extend(this, util.pick(tileJSON,
++            ['tiles', 'minzoom', 'maxzoom', 'attribution']));
++
++        if (tileJSON.vector_layers) {
++            this.vectorLayers = tileJSON.vector_layers;
++            this.vectorLayerIds = this.vectorLayers.map(function(layer) { return layer.id; });
+         }
+ 
+-        return this;
+-    },
++        this._pyramid = new TilePyramid({
++            tileSize: this.tileSize,
++            minzoom: this.minzoom,
++            maxzoom: this.maxzoom,
++            roundZoom: this.roundZoom,
++            reparseOverscaled: this.reparseOverscaled,
++            load: this._loadTile.bind(this),
++            abort: this._abortTile.bind(this),
++            unload: this._unloadTile.bind(this),
++            add: this._addTile.bind(this),
++            remove: this._removeTile.bind(this),
++            redoPlacement: this._redoTilePlacement ? this._redoTilePlacement.bind(this) : undefined
++        });
+ 
+-    /**
+-     * Remove this control from the map it has been added to.
+-     *
+-     * @returns {Control} `this`
+-     */
+-    remove: function() {
+-        this._container.parentNode.removeChild(this._container);
+-        if (this.onRemove) this.onRemove(this._map);
+-        this._map = null;
+-        return this;
++        this.fire('load');
++    }.bind(this);
++
++    if (options.url) {
++        ajax.getJSON(normalizeURL(options.url), loaded);
++    } else {
++        browser.frame(loaded.bind(this, null, options));
+     }
+ };
+ 
+-},{}],320:[function(require,module,exports){
+-'use strict';
++exports.redoPlacement = function() {
++    if (!this._pyramid) {
++        return;
++    }
+ 
+-var Control = require('./control');
+-var browser = require('../../util/browser');
+-var DOM = require('../../util/dom');
+-var util = require('../../util/util');
++    var ids = this._pyramid.orderedIDs();
++    for (var i = 0; i < ids.length; i++) {
++        var tile = this._pyramid.getTile(ids[i]);
++        this._redoTilePlacement(tile);
++    }
++};
+ 
+-module.exports = Geolocate;
++exports._getTile = function(coord) {
++    return this._pyramid.getTile(coord.id);
++};
+ 
+-var geoOptions = { enableHighAccuracy: false, timeout: 6000 /* 6sec */ };
++exports._getVisibleCoordinates = function() {
++    if (!this._pyramid) return [];
++    else return this._pyramid.renderedIDs().map(TileCoord.fromID);
++};
+ 
++function sortTilesIn(a, b) {
++    var coordA = a.tile.coord;
++    var coordB = b.tile.coord;
++    return (coordA.z - coordB.z) || (coordA.y - coordB.y) || (coordA.x - coordB.x);
++}
+ 
+-/**
+- * Creates a geolocation control
+- * @class Geolocate
+- * @param {Object} [options]
+- * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
+- * @example
+- * map.addControl(new mapboxgl.Geolocate({position: 'top-left'})); // position is optional
+- */
+-function Geolocate(options) {
+-    util.setOptions(this, options);
++function mergeRenderedFeatureLayers(tiles) {
++    var result = tiles[0] || {};
++    for (var i = 1; i < tiles.length; i++) {
++        var tile = tiles[i];
++        for (var layerID in tile) {
++            var tileFeatures = tile[layerID];
++            var resultFeatures = result[layerID];
++            if (resultFeatures === undefined) {
++                resultFeatures = result[layerID] = tileFeatures;
++            } else {
++                for (var f = 0; f < tileFeatures.length; f++) {
++                    resultFeatures.push(tileFeatures[f]);
++                }
++            }
++        }
++    }
++    return result;
+ }
+ 
+-Geolocate.prototype = util.inherit(Control, {
+-    options: {
+-        position: 'top-right'
+-    },
++exports._queryRenderedVectorFeatures = function(queryGeometry, params, zoom, bearing) {
++    if (!this._pyramid)
++        return {};
+ 
+-    onAdd: function(map) {
+-        var className = 'mapboxgl-ctrl';
++    var tilesIn = this._pyramid.tilesIn(queryGeometry);
+ 
+-        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
+-        if (!browser.supportsGeolocation) return container;
++    tilesIn.sort(sortTilesIn);
+ 
+-        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
++    var styleLayers = this.map.style._layers;
+ 
+-        this._geolocateButton = DOM.create('button', (className + '-icon ' + className + '-geolocate'), this._container);
+-        this._geolocateButton.addEventListener('click', this._onClickGeolocate.bind(this));
+-        return container;
+-    },
++    var renderedFeatureLayers = [];
++    for (var r = 0; r < tilesIn.length; r++) {
++        var tileIn = tilesIn[r];
++        if (!tileIn.tile.featureIndex) continue;
++
++        renderedFeatureLayers.push(tileIn.tile.featureIndex.query({
++            queryGeometry: tileIn.queryGeometry,
++            scale: tileIn.scale,
++            tileSize: tileIn.tile.tileSize,
++            bearing: bearing,
++            params: params
++        }, styleLayers));
++    }
++    return mergeRenderedFeatureLayers(renderedFeatureLayers);
++};
++
++exports._querySourceFeatures = function(params) {
++    if (!this._pyramid) {
++        return [];
++    }
++
++    var pyramid = this._pyramid;
++    var tiles = pyramid.renderedIDs().map(function(id) {
++        return pyramid.getTile(id);
++    });
+ 
+-    _onContextMenu: function(e) {
+-        e.preventDefault();
+-    },
++    var result = [];
+ 
+-    _onClickGeolocate: function() {
+-        navigator.geolocation.getCurrentPosition(this._success.bind(this), this._error.bind(this), geoOptions);
++    var dataTiles = {};
++    for (var i = 0; i < tiles.length; i++) {
++        var tile = tiles[i];
++        var dataID = new TileCoord(Math.min(tile.sourceMaxZoom, tile.coord.z), tile.coord.x, tile.coord.y, 0).id;
++        if (!dataTiles[dataID]) {
++            dataTiles[dataID] = true;
++            tile.querySourceFeatures(result, params);
++        }
++    }
+ 
+-        // This timeout ensures that we still call finish() even if
+-        // the user declines to share their location in Firefox
+-        this._timeoutId = setTimeout(this._finish.bind(this), 10000 /* 10sec */);
+-    },
++    return result;
++};
+ 
+-    _success: function(position) {
+-        this._map.jumpTo({
+-            center: [position.coords.longitude, position.coords.latitude],
+-            zoom: 17,
+-            bearing: 0,
+-            pitch: 0
+-        });
+-        this._finish();
+-    },
++/*
++ * Create a tiled data source instance given an options object
++ *
++ * @param {Object} options
++ * @param {string} options.type Either `raster` or `vector`.
++ * @param {string} options.url A tile source URL. This should either be `mapbox://{mapid}` or a full `http[s]` url that points to a TileJSON endpoint.
++ * @param {Array} options.tiles An array of tile sources. If `url` is not specified, `tiles` can be used instead to specify tile sources, as in the TileJSON spec. Other TileJSON keys such as `minzoom` and `maxzoom` can be specified in a source object if `tiles` is used.
++ * @param {string} options.id An optional `id` to assign to the source
++ * @param {number} [options.tileSize=512] Optional tile size (width and height in pixels, assuming tiles are square). This option is only configurable for raster sources
++ * @example
++ * var sourceObj = new mapboxgl.Source.create({
++ *    type: 'vector',
++ *    url: 'mapbox://mapbox.mapbox-streets-v5'
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
++ */
++exports.create = function(source) {
++    // This is not at file scope in order to avoid a circular require.
++    var sources = {
++        vector: require('./vector_tile_source'),
++        raster: require('./raster_tile_source'),
++        geojson: require('./geojson_source'),
++        video: require('./video_source'),
++        image: require('./image_source')
++    };
+ 
+-    _error: function() {
+-        this._finish();
+-    },
++    return exports.is(source) ? source : new sources[source.type](source);
++};
+ 
+-    _finish: function() {
+-        if (this._timeoutId) { clearTimeout(this._timeoutId); }
+-        this._timeoutId = undefined;
+-    }
++exports.is = function(source) {
++    // This is not at file scope in order to avoid a circular require.
++    var sources = {
++        vector: require('./vector_tile_source'),
++        raster: require('./raster_tile_source'),
++        geojson: require('./geojson_source'),
++        video: require('./video_source'),
++        image: require('./image_source')
++    };
+ 
+-});
++    for (var type in sources) {
++        if (source instanceof sources[type]) {
++            return true;
++        }
++    }
+ 
++    return false;
++};
+ 
+-},{"../../util/browser":335,"../../util/dom":338,"../../util/util":349,"./control":319}],321:[function(require,module,exports){
++},{"../util/ajax":347,"../util/browser":348,"../util/mapbox":359,"../util/util":362,"./geojson_source":287,"./image_source":289,"./raster_tile_source":291,"./tile_coord":294,"./tile_pyramid":295,"./vector_tile_source":296,"./video_source":297}],293:[function(require,module,exports){
+ 'use strict';
+ 
+-var Control = require('./control');
+-var DOM = require('../../util/dom');
+-var util = require('../../util/util');
++var util = require('../util/util');
++var Bucket = require('../data/bucket');
++var FeatureIndex = require('../data/feature_index');
++var vt = require('vector-tile');
++var Protobuf = require('pbf');
++var GeoJSONFeature = require('../util/vectortile_to_geojson');
++var featureFilter = require('feature-filter');
++var CollisionTile = require('../symbol/collision_tile');
++var CollisionBoxArray = require('../symbol/collision_box');
+ 
+-module.exports = Navigation;
++module.exports = Tile;
+ 
+ /**
+- * Creates a navigation control with zoom buttons and a compass
+- * @class Navigation
+- * @param {Object} [options]
+- * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
+- * @example
+- * map.addControl(new mapboxgl.Navigation({position: 'top-left'})); // position is optional
++ * A tile object is the combination of a Coordinate, which defines
++ * its place, as well as a unique ID and data tracking for its content
++ *
++ * @param {Coordinate} coord
++ * @param {number} size
++ * @private
+  */
+-function Navigation(options) {
+-    util.setOptions(this, options);
++function Tile(coord, size, sourceMaxZoom) {
++    this.coord = coord;
++    this.uid = util.uniqueId();
++    this.loaded = false; // TODO rename loaded
++    this.isUnloaded = false;
++    this.uses = 0;
++    this.tileSize = size;
++    this.sourceMaxZoom = sourceMaxZoom;
++    this.buckets = {};
+ }
+ 
+-Navigation.prototype = util.inherit(Control, {
+-    options: {
+-        position: 'top-right'
+-    },
+-
+-    onAdd: function(map) {
+-        var className = 'mapboxgl-ctrl';
++Tile.prototype = {
+ 
+-        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
+-        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
++    /**
++     * Given a data object with a 'buffers' property, load it into
++     * this tile's elementGroups and buffers properties and set loaded
++     * to true. If the data is null, like in the case of an empty
++     * GeoJSON tile, no-op but still set loaded to true.
++     * @param {Object} data
++     * @returns {undefined}
++     * @private
++     */
++    loadVectorData: function(data, style) {
++        this.loaded = true;
+ 
+-        this._zoomInButton = this._createButton(className + '-icon ' + className + '-zoom-in', map.zoomIn.bind(map));
+-        this._zoomOutButton = this._createButton(className + '-icon ' + className + '-zoom-out', map.zoomOut.bind(map));
+-        this._compass = this._createButton(className + '-icon ' + className + '-compass', map.resetNorth.bind(map));
++        // empty GeoJSON tile
++        if (!data) return;
+ 
+-        this._compassArrow = DOM.create('div', 'arrow', this._compass);
++        this.collisionBoxArray = new CollisionBoxArray(data.collisionBoxArray);
++        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
++        this.featureIndex = new FeatureIndex(data.featureIndex, data.rawTileData, this.collisionTile);
++        this.rawTileData = data.rawTileData;
++        this.buckets = unserializeBuckets(data.buckets, style);
++    },
+ 
+-        this._compass.addEventListener('mousedown', this._onCompassDown.bind(this));
+-        this._onCompassMove = this._onCompassMove.bind(this);
+-        this._onCompassUp = this._onCompassUp.bind(this);
++    /**
++     * given a data object and a GL painter, destroy and re-create
++     * all of its buffers.
++     * @param {Object} data
++     * @param {Object} painter
++     * @returns {undefined}
++     * @private
++     */
++    reloadSymbolData: function(data, painter, style) {
++        if (this.isUnloaded) return;
+ 
+-        map.on('rotate', this._rotateCompassArrow.bind(this));
+-        this._rotateCompassArrow();
++        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
++        this.featureIndex.setCollisionTile(this.collisionTile);
+ 
+-        this._el = map.getCanvasContainer();
++        // Destroy and delete existing symbol buckets
++        for (var id in this.buckets) {
++            var bucket = this.buckets[id];
++            if (bucket.type === 'symbol') {
++                bucket.destroy(painter.gl);
++                delete this.buckets[id];
++            }
++        }
+ 
+-        return container;
++        // Add new symbol buckets
++        util.extend(this.buckets, unserializeBuckets(data.buckets, style));
+     },
+ 
+-    _onContextMenu: function(e) {
+-        e.preventDefault();
++    /**
++     * Make sure that this tile doesn't own any data within a given
++     * painter, so that it doesn't consume any memory or maintain
++     * any references to the painter.
++     * @param {Object} painter gl painter object
++     * @returns {undefined}
++     * @private
++     */
++    unloadVectorData: function(painter) {
++        for (var id in this.buckets) {
++            var bucket = this.buckets[id];
++            bucket.destroy(painter.gl);
++        }
++
++        this.collisionBoxArray = null;
++        this.collisionTile = null;
++        this.featureIndex = null;
++        this.rawTileData = null;
++        this.buckets = null;
++        this.loaded = false;
++        this.isUnloaded = true;
+     },
+ 
+-    _onCompassDown: function(e) {
+-        if (e.button !== 0) return;
++    redoPlacement: function(source) {
++        if (!this.loaded || this.redoingPlacement) {
++            this.redoWhenDone = true;
++            return;
++        }
+ 
+-        DOM.disableDrag();
+-        document.addEventListener('mousemove', this._onCompassMove);
+-        document.addEventListener('mouseup', this._onCompassUp);
++        this.redoingPlacement = true;
+ 
+-        this._el.dispatchEvent(copyMouseEvent(e));
+-        e.stopPropagation();
+-    },
++        source.dispatcher.send('redo placement', {
++            uid: this.uid,
++            source: source.id,
++            angle: source.map.transform.angle,
++            pitch: source.map.transform.pitch,
++            showCollisionBoxes: source.map.showCollisionBoxes
++        }, done.bind(this), this.workerID);
+ 
+-    _onCompassMove: function(e) {
+-        if (e.button !== 0) return;
++        function done(_, data) {
++            this.reloadSymbolData(data, source.map.painter, source.map.style);
++            source.fire('tile.load', {tile: this});
+ 
+-        this._el.dispatchEvent(copyMouseEvent(e));
+-        e.stopPropagation();
++            this.redoingPlacement = false;
++            if (this.redoWhenDone) {
++                this.redoPlacement(source);
++                this.redoWhenDone = false;
++            }
++        }
+     },
+ 
+-    _onCompassUp: function(e) {
+-        if (e.button !== 0) return;
++    getBucket: function(layer) {
++        return this.buckets && this.buckets[layer.ref || layer.id];
++    },
+ 
+-        document.removeEventListener('mousemove', this._onCompassMove);
+-        document.removeEventListener('mouseup', this._onCompassUp);
+-        DOM.enableDrag();
++    querySourceFeatures: function(result, params) {
++        if (!this.rawTileData) return;
+ 
+-        this._el.dispatchEvent(copyMouseEvent(e));
+-        e.stopPropagation();
+-    },
++        if (!this.vtLayers) {
++            this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
++        }
+ 
+-    _createButton: function(className, fn) {
+-        var a = DOM.create('button', className, this._container);
+-        a.addEventListener('click', function() { fn(); });
+-        return a;
+-    },
++        var layer = this.vtLayers._geojsonTileLayer || this.vtLayers[params.sourceLayer];
+ 
+-    _rotateCompassArrow: function() {
+-        var rotate = 'rotate(' + (this._map.transform.angle * (180 / Math.PI)) + 'deg)';
+-        this._compassArrow.style.transform = rotate;
++        if (!layer) return;
++
++        var filter = featureFilter(params.filter);
++        var coord = { z: this.coord.z, x: this.coord.x, y: this.coord.y };
++
++        for (var i = 0; i < layer.length; i++) {
++            var feature = layer.feature(i);
++            if (filter(feature)) {
++                var geojsonFeature = new GeoJSONFeature(feature, this.coord.z, this.coord.x, this.coord.y);
++                geojsonFeature.tile = coord;
++                result.push(geojsonFeature);
++            }
++        }
+     }
+-});
++};
+ 
++function unserializeBuckets(input, style) {
++    var output = {};
++    for (var i = 0; i < input.length; i++) {
++        var layer = style.getLayer(input[i].layerId);
++        if (!layer) continue;
+ 
+-function copyMouseEvent(e) {
+-    return new MouseEvent(e.type, {
+-        button: 2,    // right click
+-        buttons: 2,   // right click
+-        bubbles: true,
+-        cancelable: true,
+-        detail: e.detail,
+-        view: e.view,
+-        screenX: e.screenX,
+-        screenY: e.screenY,
+-        clientX: e.clientX,
+-        clientY: e.clientY,
+-        movementX: e.movementX,
+-        movementY: e.movementY,
+-        ctrlKey: e.ctrlKey,
+-        shiftKey: e.shiftKey,
+-        altKey: e.altKey,
+-        metaKey: e.metaKey
+-    });
++        var bucket = Bucket.create(util.extend({
++            layer: layer,
++            childLayers: input[i].childLayerIds
++                .map(style.getLayer.bind(style))
++                .filter(function(layer) { return layer; })
++        }, input[i]));
++        output[bucket.id] = bucket;
++    }
++    return output;
+ }
+ 
+-
+-},{"../../util/dom":338,"../../util/util":349,"./control":319}],322:[function(require,module,exports){
++},{"../data/bucket":260,"../data/feature_index":266,"../symbol/collision_box":319,"../symbol/collision_tile":321,"../util/util":362,"../util/vectortile_to_geojson":363,"feature-filter":99,"pbf":394,"vector-tile":456}],294:[function(require,module,exports){
+ 'use strict';
+ 
+-var DOM = require('../../util/dom'),
+-    LngLatBounds = require('../../geo/lng_lat_bounds'),
+-    util = require('../../util/util');
++var assert = require('assert');
++var Coordinate = require('../geo/coordinate');
+ 
+-module.exports = BoxZoomHandler;
++module.exports = TileCoord;
+ 
+-/**
+- * The `BoxZoomHandler` allows a user to zoom the map to fit a bounding box.
+- * The bounding box is defined by holding `shift` while dragging the cursor.
+- * @class BoxZoomHandler
+- */
+-function BoxZoomHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
+-    this._container = map.getContainer();
++function TileCoord(z, x, y, w) {
++    assert(!isNaN(z) && z >= 0 && z % 1 === 0);
++    assert(!isNaN(x) && x >= 0 && x % 1 === 0);
++    assert(!isNaN(y) && y >= 0 && y % 1 === 0);
+ 
+-    util.bindHandlers(this);
+-}
++    if (isNaN(w)) w = 0;
+ 
+-BoxZoomHandler.prototype = {
++    this.z = +z;
++    this.x = +x;
++    this.y = +y;
++    this.w = +w;
+ 
+-    _enabled: false,
+-    _active: false,
++    // calculate id
++    w *= 2;
++    if (w < 0) w = w * -1 - 1;
++    var dim = 1 << this.z;
++    this.id = ((dim * dim * w + dim * this.y + this.x) * 32) + this.z;
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "box zoom" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
+-    },
++    // for caching pos matrix calculation when rendering
++    this.posMatrix = null;
++}
+ 
+-    /**
+-     * Returns true if the "box zoom" interaction is currently active, i.e. currently being used.
+-     * @returns {boolean} active state
+-     */
+-    isActive: function () {
+-        return this._active;
+-    },
++TileCoord.prototype.toString = function() {
++    return this.z + "/" + this.x + "/" + this.y;
++};
+ 
+-    /**
+-     * Enable the "box zoom" interaction.
+-     * @example
+-     *   map.boxZoom.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('mousedown', this._onMouseDown, false);
+-        this._enabled = true;
+-    },
++TileCoord.prototype.toCoordinate = function(sourceMaxZoom) {
++    var zoom = Math.min(this.z, sourceMaxZoom);
++    var tileScale = Math.pow(2, zoom);
++    var row = this.y;
++    var column = this.x + tileScale * this.w;
++    return new Coordinate(column, row, zoom);
++};
+ 
+-    /**
+-     * Disable the "box zoom" interaction.
+-     * @example
+-     *   map.boxZoom.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('mousedown', this._onMouseDown);
+-        this._enabled = false;
+-    },
++// Parse a packed integer id into a TileCoord object
++TileCoord.fromID = function(id) {
++    var z = id % 32, dim = 1 << z;
++    var xy = ((id - z) / 32);
++    var x = xy % dim, y = ((xy - x) / dim) % dim;
++    var w = Math.floor(xy / (dim * dim));
++    if (w % 2 !== 0) w = w * -1 - 1;
++    w /= 2;
++    return new TileCoord(z, x, y, w);
++};
+ 
+-    _onMouseDown: function (e) {
+-        if (!(e.shiftKey && e.button === 0)) return;
++// given a list of urls, choose a url template and return a tile URL
++TileCoord.prototype.url = function(urls, sourceMaxZoom) {
++    return urls[(this.x + this.y) % urls.length]
++        .replace('{prefix}', (this.x % 16).toString(16) + (this.y % 16).toString(16))
++        .replace('{z}', Math.min(this.z, sourceMaxZoom || this.z))
++        .replace('{x}', this.x)
++        .replace('{y}', this.y);
++};
+ 
+-        document.addEventListener('mousemove', this._onMouseMove, false);
+-        document.addEventListener('keydown', this._onKeyDown, false);
+-        document.addEventListener('mouseup', this._onMouseUp, false);
++// Return the coordinate of the parent tile
++TileCoord.prototype.parent = function(sourceMaxZoom) {
++    if (this.z === 0) return null;
+ 
+-        DOM.disableDrag();
+-        this._startPos = DOM.mousePos(this._el, e);
+-        this._active = true;
+-    },
++    // the id represents an overscaled tile, return the same coordinates with a lower z
++    if (this.z > sourceMaxZoom) {
++        return new TileCoord(this.z - 1, this.x, this.y, this.w);
++    }
+ 
+-    _onMouseMove: function (e) {
+-        var p0 = this._startPos,
+-            p1 = DOM.mousePos(this._el, e);
++    return new TileCoord(this.z - 1, Math.floor(this.x / 2), Math.floor(this.y / 2), this.w);
++};
+ 
+-        if (!this._box) {
+-            this._box = DOM.create('div', 'mapboxgl-boxzoom', this._container);
+-            this._container.classList.add('mapboxgl-crosshair');
+-            this._fireEvent('boxzoomstart', e);
+-        }
++TileCoord.prototype.wrapped = function() {
++    return new TileCoord(this.z, this.x, this.y, 0);
++};
+ 
+-        var minX = Math.min(p0.x, p1.x),
+-            maxX = Math.max(p0.x, p1.x),
+-            minY = Math.min(p0.y, p1.y),
+-            maxY = Math.max(p0.y, p1.y);
++// Return the coordinates of the tile's children
++TileCoord.prototype.children = function(sourceMaxZoom) {
+ 
+-        DOM.setTransform(this._box, 'translate(' + minX + 'px,' + minY + 'px)');
++    if (this.z >= sourceMaxZoom) {
++        // return a single tile coord representing a an overscaled tile
++        return [new TileCoord(this.z + 1, this.x, this.y, this.w)];
++    }
+ 
+-        this._box.style.width = (maxX - minX) + 'px';
+-        this._box.style.height = (maxY - minY) + 'px';
+-    },
++    var z = this.z + 1;
++    var x = this.x * 2;
++    var y = this.y * 2;
++    return [
++        new TileCoord(z, x, y, this.w),
++        new TileCoord(z, x + 1, y, this.w),
++        new TileCoord(z, x, y + 1, this.w),
++        new TileCoord(z, x + 1, y + 1, this.w)
++    ];
++};
+ 
+-    _onMouseUp: function (e) {
+-        if (e.button !== 0) return;
++// Taken from polymaps src/Layer.js
++// https://github.com/simplegeo/polymaps/blob/master/src/Layer.js#L333-L383
+ 
+-        var p0 = this._startPos,
+-            p1 = DOM.mousePos(this._el, e),
+-            bounds = new LngLatBounds(this._map.unproject(p0), this._map.unproject(p1));
++function edge(a, b) {
++    if (a.row > b.row) { var t = a; a = b; b = t; }
++    return {
++        x0: a.column,
++        y0: a.row,
++        x1: b.column,
++        y1: b.row,
++        dx: b.column - a.column,
++        dy: b.row - a.row
++    };
++}
+ 
+-        this._finish();
++function scanSpans(e0, e1, ymin, ymax, scanLine) {
++    var y0 = Math.max(ymin, Math.floor(e1.y0));
++    var y1 = Math.min(ymax, Math.ceil(e1.y1));
+ 
+-        if (p0.x === p1.x && p0.y === p1.y) {
+-            this._fireEvent('boxzoomcancel', e);
+-        } else {
+-            this._map
+-                .fitBounds(bounds, {linear: true})
+-                .fire('boxzoomend', { originalEvent: e, boxZoomBounds: bounds });
+-        }
+-    },
++    // sort edges by x-coordinate
++    if ((e0.x0 === e1.x0 && e0.y0 === e1.y0) ?
++            (e0.x0 + e1.dy / e0.dy * e0.dx < e1.x1) :
++            (e0.x1 - e1.dy / e0.dy * e0.dx < e1.x0)) {
++        var t = e0; e0 = e1; e1 = t;
++    }
++
++    // scan lines!
++    var m0 = e0.dx / e0.dy;
++    var m1 = e1.dx / e1.dy;
++    var d0 = e0.dx > 0; // use y + 1 to compute x0
++    var d1 = e1.dx < 0; // use y + 1 to compute x1
++    for (var y = y0; y < y1; y++) {
++        var x0 = m0 * Math.max(0, Math.min(e0.dy, y + d0 - e0.y0)) + e0.x0;
++        var x1 = m1 * Math.max(0, Math.min(e1.dy, y + d1 - e1.y0)) + e1.x0;
++        scanLine(Math.floor(x1), Math.ceil(x0), y);
++    }
++}
+ 
+-    _onKeyDown: function (e) {
+-        if (e.keyCode === 27) {
+-            this._finish();
+-            this._fireEvent('boxzoomcancel', e);
+-        }
+-    },
++function scanTriangle(a, b, c, ymin, ymax, scanLine) {
++    var ab = edge(a, b),
++        bc = edge(b, c),
++        ca = edge(c, a);
+ 
+-    _finish: function () {
+-        this._active = false;
++    var t;
+ 
+-        document.removeEventListener('mousemove', this._onMouseMove, false);
+-        document.removeEventListener('keydown', this._onKeyDown, false);
+-        document.removeEventListener('mouseup', this._onMouseUp, false);
++    // sort edges by y-length
++    if (ab.dy > bc.dy) { t = ab; ab = bc; bc = t; }
++    if (ab.dy > ca.dy) { t = ab; ab = ca; ca = t; }
++    if (bc.dy > ca.dy) { t = bc; bc = ca; ca = t; }
+ 
+-        this._container.classList.remove('mapboxgl-crosshair');
++    // scan span! scan span!
++    if (ab.dy) scanSpans(ca, ab, ymin, ymax, scanLine);
++    if (bc.dy) scanSpans(ca, bc, ymin, ymax, scanLine);
++}
+ 
+-        if (this._box) {
+-            this._box.parentNode.removeChild(this._box);
+-            this._box = null;
++TileCoord.cover = function(z, bounds, actualZ) {
++    var tiles = 1 << z;
++    var t = {};
++
++    function scanLine(x0, x1, y) {
++        var x, wx, coord;
++        if (y >= 0 && y <= tiles) {
++            for (x = x0; x < x1; x++) {
++                wx = (x % tiles + tiles) % tiles;
++                coord = new TileCoord(actualZ, wx, y, Math.floor(x / tiles));
++                t[coord.id] = coord;
++            }
+         }
++    }
+ 
+-        DOM.enableDrag();
+-    },
++    // Divide the screen up in two triangles and scan each of them:
++    // +---/
++    // | / |
++    // /---+
++    scanTriangle(bounds[0], bounds[1], bounds[2], 0, tiles, scanLine);
++    scanTriangle(bounds[2], bounds[3], bounds[0], 0, tiles, scanLine);
+ 
+-    _fireEvent: function (type, e) {
+-        return this._map.fire(type, { originalEvent: e });
+-    }
++    return Object.keys(t).map(function(id) {
++        return t[id];
++    });
+ };
+ 
++},{"../geo/coordinate":268,"assert":29}],295:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Boxzoom start event. This event is emitted at the start of a box zoom interaction.
+- *
+- * @event boxzoomstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++var Tile = require('./tile');
++var TileCoord = require('./tile_coord');
++var Point = require('point-geometry');
++var Cache = require('../util/lru_cache');
++var Coordinate = require('../geo/coordinate');
++var util = require('../util/util');
++var EXTENT = require('../data/bucket').EXTENT;
+ 
+-/**
+- * Boxzoom end event. This event is emitted at the end of a box zoom interaction
+- *
+- * @event boxzoomend
+- * @memberof Map
+- * @instance
+- * @type {Object}
+- * @property {Event} originalEvent the original DOM event
+- * @property {LngLatBounds} boxZoomBounds the bounds of the box zoom target
+- */
++module.exports = TilePyramid;
+ 
+ /**
+- * Boxzoom cancel event.  This event is emitted when the user cancels a box zoom interaction,
+- *   or when the box zoom does not meet the minimum size threshold.
++ * A tile pyramid is a specialized cache and datastructure
++ * that contains tiles. It's used by sources to manage their
++ * data.
+  *
+- * @event boxzoomcancel
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
++ * @param {Object} options
++ * @param {number} options.tileSize
++ * @param {number} options.minzoom
++ * @param {number} options.maxzoom
++ * @private
+  */
++function TilePyramid(options) {
++    this.tileSize = options.tileSize;
++    this.minzoom = options.minzoom;
++    this.maxzoom = options.maxzoom;
++    this.roundZoom = options.roundZoom;
++    this.reparseOverscaled = options.reparseOverscaled;
+ 
+-},{"../../geo/lng_lat_bounds":257,"../../util/dom":338,"../../util/util":349}],323:[function(require,module,exports){
+-'use strict';
++    this._load = options.load;
++    this._abort = options.abort;
++    this._unload = options.unload;
++    this._add = options.add;
++    this._remove = options.remove;
++    this._redoPlacement = options.redoPlacement;
+ 
+-module.exports = DoubleClickZoomHandler;
++    this._tiles = {};
++    this._cache = new Cache(0, function(tile) { return this._unload(tile); }.bind(this));
+ 
+-/**
+- * The `DoubleClickZoomHandler` allows a user to zoom the map around point by
+- * double clicking.
+- * @class DoubleClickZoomHandler
+- */
+-function DoubleClickZoomHandler(map) {
+-    this._map = map;
+-    this._onDblClick = this._onDblClick.bind(this);
++    this._filterRendered = this._filterRendered.bind(this);
+ }
+ 
+-DoubleClickZoomHandler.prototype = {
+ 
+-    _enabled: false,
++TilePyramid.maxOverzooming = 10;
++TilePyramid.maxUnderzooming = 3;
+ 
++TilePyramid.prototype = {
+     /**
+-     * Returns the current enabled/disabled state of the "double click to zoom" interaction.
+-     * @returns {boolean} enabled state
++     * Confirm that every tracked tile is loaded.
++     * @returns {boolean} whether all tiles are loaded.
++     * @private
+      */
+-    isEnabled: function () {
+-        return this._enabled;
++    loaded: function() {
++        for (var t in this._tiles) {
++            if (!this._tiles[t].loaded && !this._tiles[t].errored)
++                return false;
++        }
++        return true;
+     },
+ 
+     /**
+-     * Enable the "double click to zoom" interaction.
+-     * @example
+-     * map.doubleClickZoom.enable();
++     * Return all tile ids ordered with z-order, and cast to numbers
++     * @returns {Array<number>} ids
++     * @private
+      */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._map.on('dblclick', this._onDblClick);
+-        this._enabled = true;
++    orderedIDs: function() {
++        return Object.keys(this._tiles).map(Number).sort(compareKeyZoom);
++    },
++
++    renderedIDs: function() {
++        return this.orderedIDs().filter(this._filterRendered);
++    },
++
++    _filterRendered: function(id) {
++        return this._tiles[id].loaded && !this._coveredTiles[id];
++    },
++
++    reload: function() {
++        this._cache.reset();
++        for (var i in this._tiles) {
++            this._load(this._tiles[i]);
++        }
+     },
+ 
+     /**
+-     * Disable the "double click to zoom" interaction.
+-     * @example
+-     * map.doubleClickZoom.disable();
++     * Get a specific tile by id
++     * @param {string|number} id tile id
++     * @returns {Object} tile
++     * @private
+      */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._map.off('dblclick', this._onDblClick);
+-        this._enabled = false;
++    getTile: function(id) {
++        return this._tiles[id];
+     },
+ 
+-    _onDblClick: function (e) {
+-        this._map.zoomTo(this._map.getZoom() +
+-            (e.originalEvent.shiftKey ? -1 : 1), {around: e.lngLat});
+-    }
+-};
++    /**
++     * get the zoom level adjusted for the difference in map and source tilesizes
++     * @param {Object} transform
++     * @returns {number} zoom level
++     * @private
++     */
++    getZoom: function(transform) {
++        return transform.zoom + Math.log(transform.tileSize / this.tileSize) / Math.LN2;
++    },
+ 
+-},{}],324:[function(require,module,exports){
+-'use strict';
++    /**
++     * Return a zoom level that will cover all tiles in a given transform
++     * @param {Object} transform
++     * @returns {number} zoom level
++     * @private
++     */
++    coveringZoomLevel: function(transform) {
++        return (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
++    },
+ 
+-var DOM = require('../../util/dom'),
+-    util = require('../../util/util');
++    /**
++     * Given a transform, return all coordinates that could cover that
++     * transform for a covering zoom level.
++     * @param {Object} transform
++     * @returns {Array<Tile>} tiles
++     * @private
++     */
++    coveringTiles: function(transform) {
++        var z = this.coveringZoomLevel(transform);
++        var actualZ = z;
+ 
+-module.exports = DragPanHandler;
++        if (z < this.minzoom) return [];
++        if (z > this.maxzoom) z = this.maxzoom;
+ 
+-var inertiaLinearity = 0.3,
+-    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
+-    inertiaMaxSpeed = 1400, // px/s
+-    inertiaDeceleration = 2500; // px/s^2
++        var tr = transform,
++            tileCenter = tr.locationCoordinate(tr.center)._zoomTo(z),
++            centerPoint = new Point(tileCenter.column - 0.5, tileCenter.row - 0.5);
+ 
++        return TileCoord.cover(z, [
++            tr.pointCoordinate(new Point(0, 0))._zoomTo(z),
++            tr.pointCoordinate(new Point(tr.width, 0))._zoomTo(z),
++            tr.pointCoordinate(new Point(tr.width, tr.height))._zoomTo(z),
++            tr.pointCoordinate(new Point(0, tr.height))._zoomTo(z)
++        ], this.reparseOverscaled ? actualZ : z).sort(function(a, b) {
++            return centerPoint.dist(a) - centerPoint.dist(b);
++        });
++    },
+ 
+-/**
+- * The `DragPanHandler` allows a user to pan the map by clicking and dragging
+- * the cursor.
+- * @class DragPanHandler
+- */
+-function DragPanHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++    /**
++     * Recursively find children of the given tile (up to maxCoveringZoom) that are already loaded;
++     * adds found tiles to retain object; returns true if any child is found.
++     *
++     * @param {Coordinate} coord
++     * @param {number} maxCoveringZoom
++     * @param {boolean} retain
++     * @returns {boolean} whether the operation was complete
++     * @private
++     */
++    findLoadedChildren: function(coord, maxCoveringZoom, retain) {
++        var found = false;
+ 
+-    util.bindHandlers(this);
+-}
++        for (var id in this._tiles) {
++            var tile = this._tiles[id];
+ 
+-DragPanHandler.prototype = {
++            // only consider loaded tiles on higher zoom levels (up to maxCoveringZoom)
++            if (retain[id] || !tile.loaded || tile.coord.z <= coord.z || tile.coord.z > maxCoveringZoom) continue;
+ 
+-    _enabled: false,
+-    _active: false,
++            // disregard tiles that are not descendants of the given tile coordinate
++            var z2 = Math.pow(2, Math.min(tile.coord.z, this.maxzoom) - Math.min(coord.z, this.maxzoom));
++            if (Math.floor(tile.coord.x / z2) !== coord.x ||
++                Math.floor(tile.coord.y / z2) !== coord.y)
++                continue;
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "drag to pan" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
++            // found loaded child
++            retain[id] = true;
++            found = true;
++
++            // loop through parents; retain the topmost loaded one if found
++            while (tile && tile.coord.z - 1 > coord.z) {
++                var parentId = tile.coord.parent(this.maxzoom).id;
++                tile = this._tiles[parentId];
++
++                if (tile && tile.loaded) {
++                    delete retain[id];
++                    retain[parentId] = true;
++                }
++            }
++        }
++        return found;
+     },
+ 
+     /**
+-     * Returns true if the "drag to pan" interaction is currently active, i.e. currently being used.
+-     * @returns {boolean} active state
++     * Find a loaded parent of the given tile (up to minCoveringZoom);
++     * adds the found tile to retain object and returns the tile if found
++     *
++     * @param {Coordinate} coord
++     * @param {number} minCoveringZoom
++     * @param {boolean} retain
++     * @returns {Tile} tile object
++     * @private
+      */
+-    isActive: function () {
+-        return this._active;
++    findLoadedParent: function(coord, minCoveringZoom, retain) {
++        for (var z = coord.z - 1; z >= minCoveringZoom; z--) {
++            coord = coord.parent(this.maxzoom);
++            var tile = this._tiles[coord.id];
++            if (tile && tile.loaded) {
++                retain[coord.id] = true;
++                return tile;
++            }
++            if (this._cache.has(coord.id)) {
++                this.addTile(coord);
++                retain[coord.id] = true;
++                return this._tiles[coord.id];
++            }
++        }
+     },
+ 
+     /**
+-     * Enable the "drag to pan" interaction.
+-     * @example
+-     * map.dragPan.enable();
++     * Resizes the tile cache based on the current viewport's size.
++     *
++     * Larger viewports use more tiles and need larger caches. Larger viewports
++     * are more likely to be found on devices with more memory and on pages where
++     * the map is more important.
++     *
++     * @private
+      */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('mousedown', this._onDown);
+-        this._el.addEventListener('touchstart', this._onDown);
+-        this._enabled = true;
++    updateCacheSize: function(transform) {
++        var widthInTiles = Math.ceil(transform.width / transform.tileSize) + 1;
++        var heightInTiles = Math.ceil(transform.height / transform.tileSize) + 1;
++        var approxTilesInView = widthInTiles * heightInTiles;
++        var commonZoomRange = 5;
++        this._cache.setMaxSize(Math.floor(approxTilesInView * commonZoomRange));
+     },
+ 
+     /**
+-     * Disable the "drag to pan" interaction.
+-     * @example
+-     * map.dragPan.disable();
++     * Removes tiles that are outside the viewport and adds new tiles that
++     * are inside the viewport.
++     * @private
+      */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('mousedown', this._onDown);
+-        this._el.removeEventListener('touchstart', this._onDown);
+-        this._enabled = false;
+-    },
++    update: function(used, transform, fadeDuration) {
++        var i;
++        var coord;
++        var tile;
+ 
+-    _onDown: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        if (this.isActive()) return;
++        this.updateCacheSize(transform);
+ 
+-        if (e.touches) {
+-            document.addEventListener('touchmove', this._onMove);
+-            document.addEventListener('touchend', this._onTouchEnd);
+-        } else {
+-            document.addEventListener('mousemove', this._onMove);
+-            document.addEventListener('mouseup', this._onMouseUp);
+-        }
++        // Determine the overzooming/underzooming amounts.
++        var zoom = (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
++        var minCoveringZoom = Math.max(zoom - TilePyramid.maxOverzooming, this.minzoom);
++        var maxCoveringZoom = Math.max(zoom + TilePyramid.maxUnderzooming,  this.minzoom);
+ 
+-        this._active = false;
+-        this._startPos = this._pos = DOM.mousePos(this._el, e);
+-        this._inertia = [[Date.now(), this._pos]];
+-    },
++        // Retain is a list of tiles that we shouldn't delete, even if they are not
++        // the most ideal tile for the current viewport. This may include tiles like
++        // parent or child tiles that are *already* loaded.
++        var retain = {};
++        var now = new Date().getTime();
+ 
+-    _onMove: function (e) {
+-        if (this._ignoreEvent(e)) return;
++        // Covered is a list of retained tiles who's areas are full covered by other,
++        // better, retained tiles. They are not drawn separately.
++        this._coveredTiles = {};
+ 
+-        if (!this.isActive()) {
+-            this._active = true;
+-            this._fireEvent('dragstart', e);
+-            this._fireEvent('movestart', e);
+-        }
++        var required = used ? this.coveringTiles(transform) : [];
++        for (i = 0; i < required.length; i++) {
++            coord = required[i];
++            tile = this.addTile(coord);
+ 
+-        var pos = DOM.mousePos(this._el, e),
+-            map = this._map;
++            retain[coord.id] = true;
+ 
+-        map.stop();
+-        this._drainInertiaBuffer();
+-        this._inertia.push([Date.now(), pos]);
++            if (tile.loaded)
++                continue;
+ 
+-        map.transform.setLocationAtPoint(map.transform.pointLocation(this._pos), pos);
++            // The tile we require is not yet loaded.
++            // Retain child or parent tiles that cover the same area.
++            if (!this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
++                this.findLoadedParent(coord, minCoveringZoom, retain);
++            }
++        }
+ 
+-        this._fireEvent('drag', e);
+-        this._fireEvent('move', e);
++        var parentsForFading = {};
+ 
+-        this._pos = pos;
++        var ids = Object.keys(retain);
++        for (var k = 0; k < ids.length; k++) {
++            var id = ids[k];
++            coord = TileCoord.fromID(id);
++            tile = this._tiles[id];
++            if (tile && tile.timeAdded > now - (fadeDuration || 0)) {
++                // This tile is still fading in. Find tiles to cross-fade with it.
++                if (this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
++                    retain[id] = true;
++                }
++                this.findLoadedParent(coord, minCoveringZoom, parentsForFading);
++            }
++        }
+ 
+-        e.preventDefault();
++        var fadedParent;
++        for (fadedParent in parentsForFading) {
++            if (!retain[fadedParent]) {
++                // If a tile is only needed for fading, mark it as covered so that it isn't rendered on it's own.
++                this._coveredTiles[fadedParent] = true;
++            }
++        }
++        for (fadedParent in parentsForFading) {
++            retain[fadedParent] = true;
++        }
++
++        // Remove the tiles we don't need anymore.
++        var remove = util.keysDifference(this._tiles, retain);
++        for (i = 0; i < remove.length; i++) {
++            this.removeTile(+remove[i]);
++        }
++
++        this.transform = transform;
+     },
+ 
+-    _onUp: function (e) {
+-        if (!this.isActive()) return;
++    /**
++     * Add a tile, given its coordinate, to the pyramid.
++     * @param {Coordinate} coord
++     * @returns {Coordinate} the coordinate.
++     * @private
++     */
++    addTile: function(coord) {
++        var tile = this._tiles[coord.id];
++        if (tile)
++            return tile;
+ 
+-        this._active = false;
+-        this._fireEvent('dragend', e);
+-        this._drainInertiaBuffer();
++        var wrapped = coord.wrapped();
++        tile = this._tiles[wrapped.id];
+ 
+-        var finish = function() {
+-            this._fireEvent('moveend', e);
+-        }.bind(this);
++        if (!tile) {
++            tile = this._cache.get(wrapped.id);
++            if (tile && this._redoPlacement) {
++                this._redoPlacement(tile);
++            }
++        }
+ 
+-        var inertia = this._inertia;
+-        if (inertia.length < 2) {
+-            finish();
+-            return;
++        if (!tile) {
++            var zoom = coord.z;
++            var overscaling = zoom > this.maxzoom ? Math.pow(2, zoom - this.maxzoom) : 1;
++            tile = new Tile(wrapped, this.tileSize * overscaling, this.maxzoom);
++            this._load(tile);
+         }
+ 
+-        var last = inertia[inertia.length - 1],
+-            first = inertia[0],
+-            flingOffset = last[1].sub(first[1]),
+-            flingDuration = (last[0] - first[0]) / 1000;
++        tile.uses++;
++        this._tiles[coord.id] = tile;
++        this._add(tile, coord);
+ 
+-        if (flingDuration === 0 || last[1].equals(first[1])) {
+-            finish();
++        return tile;
++    },
++
++    /**
++     * Remove a tile, given its id, from the pyramid
++     * @param {string|number} id tile id
++     * @returns {undefined} nothing
++     * @private
++     */
++    removeTile: function(id) {
++        var tile = this._tiles[id];
++        if (!tile)
++            return;
++
++        tile.uses--;
++        delete this._tiles[id];
++        this._remove(tile);
++
++        if (tile.uses > 0)
+             return;
++
++        if (tile.loaded) {
++            this._cache.add(tile.coord.wrapped().id, tile);
++        } else {
++            this._abort(tile);
++            this._unload(tile);
+         }
++    },
+ 
+-        // calculate px/s velocity & adjust for increased initial animation speed when easing out
+-        var velocity = flingOffset.mult(inertiaLinearity / flingDuration),
+-            speed = velocity.mag(); // px/s
++    /**
++     * Remove all tiles from this pyramid
++     * @private
++     */
++    clearTiles: function() {
++        for (var id in this._tiles)
++            this.removeTile(id);
++        this._cache.reset();
++    },
+ 
+-        if (speed > inertiaMaxSpeed) {
+-            speed = inertiaMaxSpeed;
+-            velocity._unit()._mult(speed);
+-        }
++    /**
++     * Search through our current tiles and attempt to find the tiles that
++     * cover the given bounds.
++     * @param {Array<Coordinate>} queryGeometry coordinates of the corners of bounding rectangle
++     * @returns {Array<Object>} result items have {tile, minX, maxX, minY, maxY}, where min/max bounding values are the given bounds transformed in into the coordinate space of this tile.
++     * @private
++     */
++    tilesIn: function(queryGeometry) {
++        var tileResults = {};
++        var ids = this.orderedIDs();
+ 
+-        var duration = speed / (inertiaDeceleration * inertiaLinearity),
+-            offset = velocity.mult(-duration / 2);
++        var minX = Infinity;
++        var minY = Infinity;
++        var maxX = -Infinity;
++        var maxY = -Infinity;
++        var z = queryGeometry[0].zoom;
+ 
+-        this._map.panBy(offset, {
+-            duration: duration * 1000,
+-            easing: inertiaEasing,
+-            noMoveStart: true
+-        }, { originalEvent: e });
+-    },
++        for (var k = 0; k < queryGeometry.length; k++) {
++            var p = queryGeometry[k];
++            minX = Math.min(minX, p.column);
++            minY = Math.min(minY, p.row);
++            maxX = Math.max(maxX, p.column);
++            maxY = Math.max(maxY, p.row);
++        }
+ 
+-    _onMouseUp: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        this._onUp(e);
+-        document.removeEventListener('mousemove', this._onMove);
+-        document.removeEventListener('mouseup', this._onMouseUp);
+-    },
++        for (var i = 0; i < ids.length; i++) {
++            var tile = this._tiles[ids[i]];
++            var coord = TileCoord.fromID(ids[i]);
+ 
+-    _onTouchEnd: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        this._onUp(e);
+-        document.removeEventListener('touchmove', this._onMove);
+-        document.removeEventListener('touchend', this._onTouchEnd);
+-    },
++            var tileSpaceBounds = [
++                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(minX, minY, z)),
++                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(maxX, maxY, z))
++            ];
+ 
+-    _fireEvent: function (type, e) {
+-        return this._map.fire(type, { originalEvent: e });
+-    },
++            if (tileSpaceBounds[0].x < EXTENT && tileSpaceBounds[0].y < EXTENT &&
++                tileSpaceBounds[1].x >= 0 && tileSpaceBounds[1].y >= 0) {
+ 
+-    _ignoreEvent: function (e) {
+-        var map = this._map;
++                var tileSpaceQueryGeometry = [];
++                for (var j = 0; j < queryGeometry.length; j++) {
++                    tileSpaceQueryGeometry.push(coordinateToTilePoint(coord, tile.sourceMaxZoom, queryGeometry[j]));
++                }
+ 
+-        if (map.boxZoom && map.boxZoom.isActive()) return true;
+-        if (map.dragRotate && map.dragRotate.isActive()) return true;
+-        if (e.touches) {
+-            return (e.touches.length > 1);
+-        } else {
+-            if (e.ctrlKey) return true;
+-            var buttons = 1,  // left button
+-                button = 0;   // left button
+-            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
+-        }
+-    },
++                var tileResult = tileResults[tile.coord.id];
++                if (tileResult === undefined) {
++                    tileResult = tileResults[tile.coord.id] = {
++                        tile: tile,
++                        queryGeometry: [],
++                        scale: Math.pow(2, this.transform.zoom - tile.coord.z)
++                    };
++                }
+ 
+-    _drainInertiaBuffer: function () {
+-        var inertia = this._inertia,
+-            now = Date.now(),
+-            cutoff = 160;   // msec
++                // Wrapped tiles share one tileResult object but can have multiple queryGeometry parts
++                tileResult.queryGeometry.push(tileSpaceQueryGeometry);
++            }
++        }
+ 
+-        while (inertia.length > 0 && now - inertia[0][0] > cutoff) inertia.shift();
++        var results = [];
++        for (var t in tileResults) {
++            results.push(tileResults[t]);
++        }
++        return results;
+     }
+ };
+ 
+-
+ /**
+- * Drag start event. This event is emitted at the start of a user-initiated pan interaction.
+- *
+- * @event dragstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
++ * Convert a coordinate to a point in a tile's coordinate space.
++ * @param {Coordinate} tileCoord
++ * @param {Coordinate} coord
++ * @returns {Object} position
++ * @private
+  */
++function coordinateToTilePoint(tileCoord, sourceMaxZoom, coord) {
++    var zoomedCoord = coord.zoomTo(Math.min(tileCoord.z, sourceMaxZoom));
++    return {
++        x: (zoomedCoord.column - (tileCoord.x + tileCoord.w * Math.pow(2, tileCoord.z))) * EXTENT,
++        y: (zoomedCoord.row - tileCoord.y) * EXTENT
++    };
+ 
+-/**
+- * Drag event. This event is emitted repeatedly during a user-initiated pan interaction.
+- *
+- * @event drag
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++}
+ 
+-/**
+- * Drag end event. This event is emitted at the end of a user-initiated pan interaction.
+- *
+- * @event dragend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++function compareKeyZoom(a, b) {
++    return (a % 32) - (b % 32);
++}
+ 
+-},{"../../util/dom":338,"../../util/util":349}],325:[function(require,module,exports){
++},{"../data/bucket":260,"../geo/coordinate":268,"../util/lru_cache":358,"../util/util":362,"./tile":293,"./tile_coord":294,"point-geometry":400}],296:[function(require,module,exports){
+ 'use strict';
+ 
+-var DOM = require('../../util/dom'),
+-    Point = require('point-geometry'),
+-    util = require('../../util/util');
+-
+-module.exports = DragRotateHandler;
++var util = require('../util/util');
++var Evented = require('../util/evented');
++var Source = require('./source');
++var normalizeURL = require('../util/mapbox').normalizeTileURL;
+ 
+-var inertiaLinearity = 0.25,
+-    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
+-    inertiaMaxSpeed = 180, // deg/s
+-    inertiaDeceleration = 720; // deg/s^2
++module.exports = VectorTileSource;
+ 
++function VectorTileSource(options) {
++    util.extend(this, util.pick(options, ['url', 'tileSize']));
++    this._options = util.extend({ type: 'vector' }, options);
+ 
+-/**
+- * The `DragRotateHandler` allows a user to rotate the map by clicking and
+- * dragging the cursor while holding the right mouse button or the `ctrl` key.
+- * @class DragRotateHandler
+- */
+-function DragRotateHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++    if (this.tileSize !== 512) {
++        throw new Error('vector tile sources must have a tileSize of 512');
++    }
+ 
+-    util.bindHandlers(this);
++    Source._loadTileJSON.call(this, options);
+ }
+ 
+-DragRotateHandler.prototype = {
+-
+-    _enabled: false,
+-    _active: false,
++VectorTileSource.prototype = util.inherit(Evented, {
++    minzoom: 0,
++    maxzoom: 22,
++    tileSize: 512,
++    reparseOverscaled: true,
++    _loaded: false,
++    isTileClipped: true,
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "drag to rotate" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
++    onAdd: function(map) {
++        this.map = map;
+     },
+ 
+-    /**
+-     * Returns true if the "drag to rotate" interaction is currently active, i.e. currently being used.
+-     * @returns {boolean} active state
+-     */
+-    isActive: function () {
+-        return this._active;
++    loaded: function() {
++        return this._pyramid && this._pyramid.loaded();
+     },
+ 
+-    /**
+-     * Enable the "drag to rotate" interaction.
+-     * @example
+-     * map.dragRotate.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('mousedown', this._onDown);
+-        this._enabled = true;
++    update: function(transform) {
++        if (this._pyramid) {
++            this._pyramid.update(this.used, transform);
++        }
+     },
+ 
+-    /**
+-     * Disable the "drag to rotate" interaction.
+-     * @example
+-     * map.dragRotate.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('mousedown', this._onDown);
+-        this._enabled = false;
++    reload: function() {
++        if (this._pyramid) {
++            this._pyramid.reload();
++        }
+     },
+ 
+-    _onDown: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        if (this.isActive()) return;
++    serialize: function() {
++        return util.extend({}, this._options);
++    },
+ 
+-        document.addEventListener('mousemove', this._onMove);
+-        document.addEventListener('mouseup', this._onUp);
++    getVisibleCoordinates: Source._getVisibleCoordinates,
++    getTile: Source._getTile,
+ 
+-        this._active = false;
+-        this._inertia = [[Date.now(), this._map.getBearing()]];
+-        this._startPos = this._pos = DOM.mousePos(this._el, e);
+-        this._center = this._map.transform.centerPoint;  // Center of rotation
++    queryRenderedFeatures: Source._queryRenderedVectorFeatures,
++    querySourceFeatures: Source._querySourceFeatures,
+ 
+-        // If the first click was too close to the center, move the center of rotation by 200 pixels
+-        // in the direction of the click.
+-        var startToCenter = this._startPos.sub(this._center),
+-            startToCenterDist = startToCenter.mag();
++    _loadTile: function(tile) {
++        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
++        var params = {
++            url: normalizeURL(tile.coord.url(this.tiles, this.maxzoom), this.url),
++            uid: tile.uid,
++            coord: tile.coord,
++            zoom: tile.coord.z,
++            tileSize: this.tileSize * overscaling,
++            source: this.id,
++            overscaling: overscaling,
++            angle: this.map.transform.angle,
++            pitch: this.map.transform.pitch,
++            showCollisionBoxes: this.map.showCollisionBoxes
++        };
+ 
+-        if (startToCenterDist < 200) {
+-            this._center = this._startPos.add(new Point(-200, 0)._rotate(startToCenter.angle()));
++        if (tile.workerID) {
++            params.rawTileData = tile.rawTileData;
++            this.dispatcher.send('reload tile', params, this._tileLoaded.bind(this, tile), tile.workerID);
++        } else {
++            tile.workerID = this.dispatcher.send('load tile', params, this._tileLoaded.bind(this, tile));
+         }
+-
+-        e.preventDefault();
+     },
+ 
+-    _onMove: function (e) {
+-        if (this._ignoreEvent(e)) return;
++    _tileLoaded: function(tile, err, data) {
++        if (tile.aborted)
++            return;
+ 
+-        if (!this.isActive()) {
+-            this._active = true;
+-            this._fireEvent('rotatestart', e);
+-            this._fireEvent('movestart', e);
++        if (err) {
++            tile.errored = true;
++            this.fire('tile.error', {tile: tile, error: err});
++            return;
+         }
+ 
+-        var map = this._map;
+-        map.stop();
++        tile.loadVectorData(data, this.map.style);
+ 
+-        var p1 = this._pos,
+-            p2 = DOM.mousePos(this._el, e),
+-            center = this._center,
+-            bearingDiff = p1.sub(center).angleWith(p2.sub(center)) / Math.PI * 180,
+-            bearing = map.getBearing() - bearingDiff,
+-            inertia = this._inertia,
+-            last = inertia[inertia.length - 1];
++        if (tile.redoWhenDone) {
++            tile.redoWhenDone = false;
++            tile.redoPlacement(this);
++        }
+ 
+-        this._drainInertiaBuffer();
+-        inertia.push([Date.now(), map._normalizeBearing(bearing, last[1])]);
++        this.fire('tile.load', {tile: tile});
++        this.fire('tile.stats', data.bucketStats);
++    },
+ 
+-        map.transform.bearing = bearing;
++    _abortTile: function(tile) {
++        tile.aborted = true;
++        this.dispatcher.send('abort tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    },
+ 
+-        this._fireEvent('rotate', e);
+-        this._fireEvent('move', e);
++    _addTile: function(tile) {
++        this.fire('tile.add', {tile: tile});
++    },
+ 
+-        this._pos = p2;
++    _removeTile: function(tile) {
++        this.fire('tile.remove', {tile: tile});
+     },
+ 
+-    _onUp: function (e) {
+-        if (this._ignoreEvent(e)) return;
+-        document.removeEventListener('mousemove', this._onMove);
+-        document.removeEventListener('mouseup', this._onUp);
++    _unloadTile: function(tile) {
++        tile.unloadVectorData(this.map.painter);
++        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
++    },
+ 
+-        if (!this.isActive()) return;
++    redoPlacement: Source.redoPlacement,
+ 
+-        this._active = false;
+-        this._fireEvent('rotateend', e);
+-        this._drainInertiaBuffer();
++    _redoTilePlacement: function(tile) {
++        tile.redoPlacement(this);
++    }
++});
+ 
+-        var map = this._map,
+-            mapBearing = map.getBearing(),
+-            inertia = this._inertia;
++},{"../util/evented":354,"../util/mapbox":359,"../util/util":362,"./source":292}],297:[function(require,module,exports){
++'use strict';
+ 
+-        var finish = function() {
+-            if (Math.abs(mapBearing) < map.options.bearingSnap) {
+-                map.resetNorth({noMoveStart: true}, { originalEvent: e });
+-            } else {
+-                this._fireEvent('moveend', e);
+-            }
+-        }.bind(this);
++var util = require('../util/util');
++var Tile = require('./tile');
++var TileCoord = require('./tile_coord');
++var LngLat = require('../geo/lng_lat');
++var Point = require('point-geometry');
++var Evented = require('../util/evented');
++var ajax = require('../util/ajax');
++var EXTENT = require('../data/bucket').EXTENT;
++var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
++var Buffer = require('../data/buffer');
++var VertexArrayObject = require('../render/vertex_array_object');
+ 
+-        if (inertia.length < 2) {
+-            finish();
+-            return;
+-        }
++module.exports = VideoSource;
+ 
+-        var first = inertia[0],
+-            last = inertia[inertia.length - 1],
+-            previous = inertia[inertia.length - 2],
+-            bearing = map._normalizeBearing(mapBearing, previous[1]),
+-            flingDiff = last[1] - first[1],
+-            sign = flingDiff < 0 ? -1 : 1,
+-            flingDuration = (last[0] - first[0]) / 1000;
++/**
++ * Create a Video data source instance given an options object
++ * @class VideoSource
++ * @param {Object} [options]
++ * @param {Array<string>} options.urls An array of URLs to video files
++ * @param {Array} options.coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
++ * @example
++ * var sourceObj = new mapboxgl.VideoSource({
++ *    url: [
++ *        'https://www.mapbox.com/videos/baltimore-smoke.mp4',
++ *        'https://www.mapbox.com/videos/baltimore-smoke.webm'
++ *    ],
++ *    coordinates: [
++ *        [-76.54335737228394, 39.18579907229748],
++ *        [-76.52803659439087, 39.1838364847587],
++ *        [-76.5295386314392, 39.17683392507606],
++ *        [-76.54520273208618, 39.17876344106642]
++ *    ]
++ * });
++ * map.addSource('some id', sourceObj); // add
++ * map.removeSource('some id');  // remove
++ */
++function VideoSource(options) {
++    this.urls = options.urls;
++    this.coordinates = options.coordinates;
+ 
+-        if (flingDiff === 0 || flingDuration === 0) {
+-            finish();
+-            return;
+-        }
++    ajax.getVideo(options.urls, function(err, video) {
++        // @TODO handle errors via event.
++        if (err) return;
+ 
+-        var speed = Math.abs(flingDiff * (inertiaLinearity / flingDuration));  // deg/s
+-        if (speed > inertiaMaxSpeed) {
+-            speed = inertiaMaxSpeed;
+-        }
++        this.video = video;
++        this.video.loop = true;
+ 
+-        var duration = speed / (inertiaDeceleration * inertiaLinearity),
+-            offset = sign * speed * (duration / 2);
++        var loopID;
+ 
+-        bearing += offset;
++        // start repainting when video starts playing
++        this.video.addEventListener('playing', function() {
++            loopID = this.map.style.animationLoop.set(Infinity);
++            this.map._rerender();
++        }.bind(this));
+ 
+-        if (Math.abs(map._normalizeBearing(bearing, 0)) < map.options.bearingSnap) {
+-            bearing = map._normalizeBearing(0, bearing);
++        // stop repainting when video stops
++        this.video.addEventListener('pause', function() {
++            this.map.style.animationLoop.cancel(loopID);
++        }.bind(this));
++
++        this._loaded = true;
++
++        if (this.map) {
++            this.video.play();
++            this.setCoordinates(options.coordinates);
+         }
++    }.bind(this));
++}
+ 
+-        map.rotateTo(bearing, {
+-            duration: duration * 1000,
+-            easing: inertiaEasing,
+-            noMoveStart: true
+-        }, { originalEvent: e });
+-    },
++VideoSource.prototype = util.inherit(Evented, /** @lends VideoSource.prototype */{
++    roundZoom: true,
+ 
+-    _fireEvent: function (type, e) {
+-        return this._map.fire(type, { originalEvent: e });
++    /**
++     * Return the HTML video element.
++     *
++     * @returns {Object}
++     */
++    getVideo: function() {
++        return this.video;
+     },
+ 
+-    _ignoreEvent: function (e) {
+-        var map = this._map;
+-
+-        if (map.boxZoom && map.boxZoom.isActive()) return true;
+-        if (map.dragPan && map.dragPan.isActive()) return true;
+-        if (e.touches) {
+-            return (e.touches.length > 1);
+-        } else {
+-            var buttons = (e.ctrlKey ? 1 : 2),  // ? ctrl+left button : right button
+-                button = (e.ctrlKey ? 0 : 2);   // ? ctrl+left button : right button
+-            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
++    onAdd: function(map) {
++        this.map = map;
++        if (this.video) {
++            this.video.play();
++            this.setCoordinates(this.coordinates);
+         }
+     },
+ 
+-    _drainInertiaBuffer: function () {
+-        var inertia = this._inertia,
+-            now = Date.now(),
+-            cutoff = 160;   //msec
+-
+-        while (inertia.length > 0 && now - inertia[0][0] > cutoff)
+-            inertia.shift();
+-    }
+-
+-};
+-
+-
+-/**
+- * Rotate start event. This event is emitted at the start of a user-initiated rotate interaction.
+- *
+- * @event rotatestart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
+-
+-/**
+- * Rotate event. This event is emitted repeatedly during a user-initiated rotate interaction.
+- *
+- * @event rotate
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
+-
+-/**
+- * Rotate end event. This event is emitted at the end of a user-initiated rotate interaction.
+- *
+- * @event rotateend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++    /**
++     * Update video coordinates and rerender map
++     *
++     * @param {Array} coordinates Four geographical [lng, lat] coordinates in clockwise order defining the corners (starting with top left) of the video. Does not have to be a rectangle.
++     * @returns {VideoSource} this
++     */
++    setCoordinates: function(coordinates) {
++        this.coordinates = coordinates;
+ 
+-},{"../../util/dom":338,"../../util/util":349,"point-geometry":404}],326:[function(require,module,exports){
+-'use strict';
++        // Calculate which mercator tile is suitable for rendering the video in
++        // and create a buffer with the corner coordinates. These coordinates
++        // may be outside the tile, because raster tiles aren't clipped when rendering.
+ 
+-module.exports = KeyboardHandler;
++        var map = this.map;
++        var cornerZ0Coords = coordinates.map(function(coord) {
++            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
++        });
+ 
++        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
++        centerCoord.column = Math.round(centerCoord.column);
++        centerCoord.row = Math.round(centerCoord.row);
+ 
+-var panDelta = 80,
+-    rotateDelta = 2,
+-    pitchDelta = 5;
+ 
+-/**
+- * The `KeyboardHandler` allows a user to zoom, rotate, and pan the map using
+- * following keyboard shortcuts:
+- *  * `=` / `+`: increase zoom level by 1
+- *  * `Shift-=` / `Shift-+`: increase zoom level by 2
+- *  * `-`: decrease zoom level by 1
+- *  * `Shift--`: decrease zoom level by 2
+- *  * Arrow keys: pan by 80 pixels
+- *  * `Shift+⇢`: increase rotation by 2 degrees
+- *  * `Shift+⇠`: decrease rotation by 2 degrees
+- *  * `Shift+⇡`: increase pitch by 5 degrees
+- *  * `Shift+⇣`: decrease pitch by 5 degrees
+- * @class KeyboardHandler
+- */
+-function KeyboardHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++        var tileCoords = cornerZ0Coords.map(function(coord) {
++            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
++            return new Point(
++                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
++                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
++        });
+ 
+-    this._onKeyDown = this._onKeyDown.bind(this);
+-}
++        var maxInt16 = 32767;
++        var array = new RasterBoundsArray();
++        array.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);
++        array.emplaceBack(tileCoords[1].x, tileCoords[1].y, maxInt16, 0);
++        array.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, maxInt16);
++        array.emplaceBack(tileCoords[2].x, tileCoords[2].y, maxInt16, maxInt16);
+ 
+-KeyboardHandler.prototype = {
++        this.tile = new Tile(new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row));
++        this.tile.buckets = {};
+ 
+-    _enabled: false,
++        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
++        this.tile.boundsVAO = new VertexArrayObject();
+ 
+-    /**
+-     * Returns the current enabled/disabled state of keyboard interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
+-    },
++        this.fire('change');
+ 
+-    /**
+-     * Enable the ability to interact with the map using keyboard input.
+-     * @example
+-     * map.keyboard.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('keydown', this._onKeyDown, false);
+-        this._enabled = true;
++        return this;
+     },
+ 
+-    /**
+-     * Disable the ability to interact with the map using keyboard input.
+-     * @example
+-     * map.keyboard.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('keydown', this._onKeyDown);
+-        this._enabled = false;
++    loaded: function() {
++        return this.video && this.video.readyState >= 2;
+     },
+ 
+-    _onKeyDown: function (e) {
+-        if (e.altKey || e.ctrlKey || e.metaKey) return;
++    update: function() {
++        // noop
++    },
+ 
+-        var map = this._map,
+-            eventData = { originalEvent: e };
++    reload: function() {
++        // noop
++    },
+ 
+-        switch (e.keyCode) {
+-        case 61:
+-        case 107:
+-        case 171:
+-        case 187:
+-            map.zoomTo(Math.round(map.getZoom()) + (e.shiftKey ? 2 : 1), eventData);
+-            break;
++    prepare: function() {
++        if (!this._loaded) return;
++        if (this.video.readyState < 2) return; // not enough data for current position
+ 
+-        case 189:
+-        case 109:
+-        case 173:
+-            map.zoomTo(Math.round(map.getZoom()) - (e.shiftKey ? 2 : 1), eventData);
+-            break;
++        var gl = this.map.painter.gl;
++        if (!this.tile.texture) {
++            this.tile.texture = gl.createTexture();
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
++        } else {
++            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
++            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
++        }
+ 
+-        case 37:
+-            if (e.shiftKey) {
+-                map.easeTo({ bearing: map.getBearing() - rotateDelta }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([-panDelta, 0], eventData);
+-            }
+-            break;
++        this._currentTime = this.video.currentTime;
++    },
+ 
+-        case 39:
+-            if (e.shiftKey) {
+-                map.easeTo({ bearing: map.getBearing() + rotateDelta }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([panDelta, 0], eventData);
+-            }
+-            break;
++    getVisibleCoordinates: function() {
++        if (this.tile) return [this.tile.coord];
++        else return [];
++    },
+ 
+-        case 38:
+-            if (e.shiftKey) {
+-                map.easeTo({ pitch: map.getPitch() + pitchDelta }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([0, -panDelta], eventData);
+-            }
+-            break;
++    getTile: function() {
++        return this.tile;
++    },
+ 
+-        case 40:
+-            if (e.shiftKey) {
+-                map.easeTo({ pitch: Math.max(map.getPitch() - pitchDelta, 0) }, eventData);
+-            } else {
+-                e.preventDefault();
+-                map.panBy([0, panDelta], eventData);
+-            }
+-            break;
+-        }
++    serialize: function() {
++        return {
++            type: 'video',
++            urls: this.urls,
++            coordinates: this.coordinates
++        };
+     }
+-};
++});
+ 
+-},{}],327:[function(require,module,exports){
++},{"../data/bucket":260,"../data/buffer":265,"../geo/lng_lat":269,"../render/draw_raster":280,"../render/vertex_array_object":286,"../util/ajax":347,"../util/evented":354,"../util/util":362,"./tile":293,"./tile_coord":294,"point-geometry":400}],298:[function(require,module,exports){
+ 'use strict';
+ 
+-var DOM = require('../../util/dom'),
+-    browser = require('../../util/browser'),
+-    util = require('../../util/util');
+-
+-module.exports = ScrollZoomHandler;
+-
++var Actor = require('../util/actor');
++var WorkerTile = require('./worker_tile');
++var StyleLayer = require('../style/style_layer');
++var util = require('../util/util');
++var ajax = require('../util/ajax');
++var vt = require('vector-tile');
++var Protobuf = require('pbf');
++var supercluster = require('supercluster');
+ 
+-var ua = typeof navigator !== 'undefined' ? navigator.userAgent.toLowerCase() : '',
+-    firefox = ua.indexOf('firefox') !== -1,
+-    safari = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') === -1;
++var geojsonvt = require('geojson-vt');
++var rewind = require('geojson-rewind');
++var GeoJSONWrapper = require('./geojson_wrapper');
++var vtpbf = require('vt-pbf');
+ 
++module.exports = function(self) {
++    return new Worker(self);
++};
+ 
+-/**
+- * The `ScrollZoomHandler` allows a user to zoom the map by scrolling.
+- * @class ScrollZoomHandler
+- */
+-function ScrollZoomHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++function Worker(self) {
++    this.self = self;
++    this.actor = new Actor(self, this);
++    this.loading = {};
+ 
+-    util.bindHandlers(this);
++    this.loaded = {};
++    this.geoJSONIndexes = {};
+ }
+ 
+-ScrollZoomHandler.prototype = {
++util.extend(Worker.prototype, {
++    'set layers': function(layers) {
++        this.layers = {};
++        var that = this;
+ 
+-    _enabled: false,
++        // Filter layers and create an id -> layer map
++        var childLayerIndicies = [];
++        for (var i = 0; i < layers.length; i++) {
++            var layer = layers[i];
++            if (layer.type === 'fill' || layer.type === 'line' || layer.type === 'circle' || layer.type === 'symbol') {
++                if (layer.ref) {
++                    childLayerIndicies.push(i);
++                } else {
++                    setLayer(layer);
++                }
++            }
++        }
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "scroll to zoom" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
+-    },
++        // Create an instance of StyleLayer per layer
++        for (var j = 0; j < childLayerIndicies.length; j++) {
++            setLayer(layers[childLayerIndicies[j]]);
++        }
+ 
+-    /**
+-     * Enable the "scroll to zoom" interaction.
+-     * @example
+-     *   map.scrollZoom.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('wheel', this._onWheel, false);
+-        this._el.addEventListener('mousewheel', this._onWheel, false);
+-        this._enabled = true;
+-    },
++        function setLayer(serializedLayer) {
++            var styleLayer = StyleLayer.create(
++                serializedLayer,
++                serializedLayer.ref && that.layers[serializedLayer.ref]
++            );
++            styleLayer.updatePaintTransitions({}, {transition: false});
++            that.layers[styleLayer.id] = styleLayer;
++        }
+ 
+-    /**
+-     * Disable the "scroll to zoom" interaction.
+-     * @example
+-     *   map.scrollZoom.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('wheel', this._onWheel);
+-        this._el.removeEventListener('mousewheel', this._onWheel);
+-        this._enabled = false;
++        this.layerFamilies = createLayerFamilies(this.layers);
+     },
+ 
+-    _onWheel: function (e) {
+-        var value;
++    'update layers': function(layers) {
++        var that = this;
++        var id;
++        var layer;
+ 
+-        if (e.type === 'wheel') {
+-            value = e.deltaY;
+-            // Firefox doubles the values on retina screens...
+-            if (firefox && e.deltaMode === window.WheelEvent.DOM_DELTA_PIXEL) value /= browser.devicePixelRatio;
+-            if (e.deltaMode === window.WheelEvent.DOM_DELTA_LINE) value *= 40;
++        // Update ref parents
++        for (id in layers) {
++            layer = layers[id];
++            if (layer.ref) updateLayer(layer);
++        }
+ 
+-        } else if (e.type === 'mousewheel') {
+-            value = -e.wheelDeltaY;
+-            if (safari) value = value / 3;
++        // Update ref children
++        for (id in layers) {
++            layer = layers[id];
++            if (!layer.ref) updateLayer(layer);
+         }
+ 
+-        var now = browser.now(),
+-            timeDelta = now - (this._time || 0);
++        function updateLayer(layer) {
++            var refLayer = that.layers[layer.ref];
++            if (that.layers[layer.id]) {
++                that.layers[layer.id].set(layer, refLayer);
++            } else {
++                that.layers[layer.id] = StyleLayer.create(layer, refLayer);
++            }
++            that.layers[layer.id].updatePaintTransitions({}, {transition: false});
++        }
+ 
+-        this._pos = DOM.mousePos(this._el, e);
+-        this._time = now;
++        this.layerFamilies = createLayerFamilies(this.layers);
++    },
+ 
+-        if (value !== 0 && (value % 4.000244140625) === 0) {
+-            // This one is definitely a mouse wheel event.
+-            this._type = 'wheel';
+-            // Normalize this value to match trackpad.
+-            value = Math.floor(value / 4);
++    'load tile': function(params, callback) {
++        var source = params.source,
++            uid = params.uid;
+ 
+-        } else if (value !== 0 && Math.abs(value) < 4) {
+-            // This one is definitely a trackpad event because it is so small.
+-            this._type = 'trackpad';
++        if (!this.loading[source])
++            this.loading[source] = {};
+ 
+-        } else if (timeDelta > 400) {
+-            // This is likely a new scroll action.
+-            this._type = null;
+-            this._lastValue = value;
+ 
+-            // Start a timeout in case this was a singular event, and dely it by up to 40ms.
+-            this._timeout = setTimeout(this._onTimeout, 40);
++        var tile = this.loading[source][uid] = new WorkerTile(params);
+ 
+-        } else if (!this._type) {
+-            // This is a repeating event, but we don't know the type of event just yet.
+-            // If the delta per time is small, we assume it's a fast trackpad; otherwise we switch into wheel mode.
+-            this._type = (Math.abs(timeDelta * value) < 200) ? 'trackpad' : 'wheel';
++        tile.xhr = ajax.getArrayBuffer(params.url, done.bind(this));
+ 
+-            // Make sure our delayed event isn't fired again, because we accumulate
+-            // the previous event (which was less than 40ms ago) into this event.
+-            if (this._timeout) {
+-                clearTimeout(this._timeout);
+-                this._timeout = null;
+-                value += this._lastValue;
+-            }
++        function done(err, data) {
++            delete this.loading[source][uid];
++
++            if (err) return callback(err);
++
++            tile.data = new vt.VectorTile(new Protobuf(new Uint8Array(data)));
++            tile.parse(tile.data, this.layerFamilies, this.actor, data, callback);
++
++            this.loaded[source] = this.loaded[source] || {};
++            this.loaded[source][uid] = tile;
+         }
++    },
+ 
+-        // Slow down zoom if shift key is held for more precise zooming
+-        if (e.shiftKey && value) value = value / 4;
++    'reload tile': function(params, callback) {
++        var loaded = this.loaded[params.source],
++            uid = params.uid;
++        if (loaded && loaded[uid]) {
++            var tile = loaded[uid];
++            tile.parse(tile.data, this.layerFamilies, this.actor, params.rawTileData, callback);
++        }
++    },
+ 
+-        // Only fire the callback if we actually know what type of scrolling device the user uses.
+-        if (this._type) this._zoom(-value, e);
++    'abort tile': function(params) {
++        var loading = this.loading[params.source],
++            uid = params.uid;
++        if (loading && loading[uid]) {
++            loading[uid].xhr.abort();
++            delete loading[uid];
++        }
++    },
+ 
+-        e.preventDefault();
++    'remove tile': function(params) {
++        var loaded = this.loaded[params.source],
++            uid = params.uid;
++        if (loaded && loaded[uid]) {
++            delete loaded[uid];
++        }
+     },
+ 
+-    _onTimeout: function () {
+-        this._type = 'wheel';
+-        this._zoom(-this._lastValue);
++    'redo placement': function(params, callback) {
++        var loaded = this.loaded[params.source],
++            loading = this.loading[params.source],
++            uid = params.uid;
++
++        if (loaded && loaded[uid]) {
++            var tile = loaded[uid];
++            var result = tile.redoPlacement(params.angle, params.pitch, params.showCollisionBoxes);
++
++            if (result.result) {
++                callback(null, result.result, result.transferables);
++            }
++
++        } else if (loading && loading[uid]) {
++            loading[uid].angle = params.angle;
++        }
+     },
+ 
+-    _zoom: function (delta, e) {
+-        if (delta === 0) return;
+-        var map = this._map;
++    'parse geojson': function(params, callback) {
++        var indexData = function(err, data) {
++            rewind(data, true);
++            if (err) return callback(err);
++            if (typeof data != 'object') {
++                return callback(new Error("Input data is not a valid GeoJSON object."));
++            }
++            try {
++                this.geoJSONIndexes[params.source] = params.cluster ?
++                    supercluster(params.superclusterOptions).load(data.features) :
++                    geojsonvt(data, params.geojsonVtOptions);
++            } catch (err) {
++                return callback(err);
++            }
++            callback(null);
++        }.bind(this);
+ 
+-        // Scale by sigmoid of scroll wheel delta.
+-        var scale = 2 / (1 + Math.exp(-Math.abs(delta / 100)));
+-        if (delta < 0 && scale !== 0) scale = 1 / scale;
++        // Not, because of same origin issues, urls must either include an
++        // explicit origin or absolute path.
++        // ie: /foo/bar.json or http://example.com/bar.json
++        // but not ../foo/bar.json
++        if (params.url) {
++            ajax.getJSON(params.url, indexData);
++        } else if (typeof params.data === 'string') {
++            indexData(null, JSON.parse(params.data));
++        } else {
++            return callback(new Error("Input data is not a valid GeoJSON object."));
++        }
++    },
+ 
+-        var fromScale = map.ease ? map.ease.to : map.transform.scale,
+-            targetZoom = map.transform.scaleZoom(fromScale * scale);
++    'load geojson tile': function(params, callback) {
++        var source = params.source,
++            coord = params.coord;
+ 
+-        map.zoomTo(targetZoom, {
+-            duration: 0,
+-            around: map.unproject(this._pos),
+-            delayEndEvents: 200
+-        }, { originalEvent: e });
+-    }
+-};
++        if (!this.geoJSONIndexes[source]) return callback(null, null); // we couldn't load the file
+ 
++        // console.time('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
+ 
+-/**
+- * Zoom start event. This event is emitted just before the map begins a transition from one
+- * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event zoomstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++        var geoJSONTile = this.geoJSONIndexes[source].getTile(Math.min(coord.z, params.maxZoom), coord.x, coord.y);
+ 
+-/**
+- * Zoom event. This event is emitted repeatedly during animated transitions from one zoom level to
+- * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event zoom
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++        // console.timeEnd('tile ' + coord.z + ' ' + coord.x + ' ' + coord.y);
+ 
+-/**
+- * Zoom end event. This event is emitted just after the map completes a transition from one
+- * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event zoomend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++        // if (!geoJSONTile) console.log('not found', this.geoJSONIndexes[source], coord);
+ 
+-},{"../../util/browser":335,"../../util/dom":338,"../../util/util":349}],328:[function(require,module,exports){
+-'use strict';
++        var tile = geoJSONTile ? new WorkerTile(params) : undefined;
+ 
+-var DOM = require('../../util/dom'),
+-    util = require('../../util/util');
++        this.loaded[source] = this.loaded[source] || {};
++        this.loaded[source][params.uid] = tile;
+ 
+-module.exports = TouchZoomRotateHandler;
++        if (geoJSONTile) {
++            var geojsonWrapper = new GeoJSONWrapper(geoJSONTile.features);
++            geojsonWrapper.name = '_geojsonTileLayer';
++            var rawTileData = vtpbf({ layers: { '_geojsonTileLayer': geojsonWrapper }}).buffer;
++            tile.parse(geojsonWrapper, this.layerFamilies, this.actor, rawTileData, callback);
++        } else {
++            return callback(null, null); // nothing in the given tile
++        }
++    }
++});
+ 
+-var inertiaLinearity = 0.15,
+-    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
+-    inertiaDeceleration = 12, // scale / s^2
+-    inertiaMaxSpeed = 2.5, // scale / s
+-    significantScaleThreshold = 0.15,
+-    significantRotateThreshold = 4;
++function createLayerFamilies(layers) {
++    var families = {};
+ 
++    for (var layerId in layers) {
++        var layer = layers[layerId];
++        var parentLayerId = layer.ref || layer.id;
++        var parentLayer = layers[parentLayerId];
+ 
+-/**
+- * The `TouchZoomRotateHandler` allows a user to zoom and rotate the map by
+- * pinching on a touchscreen.
+- * @class TouchZoomRotateHandler
+- */
+-function TouchZoomRotateHandler(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++        if (parentLayer.layout && parentLayer.layout.visibility === 'none') continue;
++
++        families[parentLayerId] = families[parentLayerId] || [];
++        if (layerId === parentLayerId) {
++            families[parentLayerId].unshift(layer);
++        } else {
++            families[parentLayerId].push(layer);
++        }
++    }
+ 
+-    util.bindHandlers(this);
++    return families;
+ }
+ 
+-TouchZoomRotateHandler.prototype = {
++},{"../style/style_layer":306,"../util/actor":346,"../util/ajax":347,"../util/util":362,"./geojson_wrapper":288,"./worker_tile":299,"geojson-rewind":104,"geojson-vt":108,"pbf":394,"supercluster":438,"vector-tile":456,"vt-pbf":462}],299:[function(require,module,exports){
++'use strict';
+ 
+-    _enabled: false,
++var FeatureIndex = require('../data/feature_index');
++var CollisionTile = require('../symbol/collision_tile');
++var Bucket = require('../data/bucket');
++var CollisionBoxArray = require('../symbol/collision_box');
++var DictionaryCoder = require('../util/dictionary_coder');
+ 
+-    /**
+-     * Returns the current enabled/disabled state of the "pinch to rotate and zoom" interaction.
+-     * @returns {boolean} enabled state
+-     */
+-    isEnabled: function () {
+-        return this._enabled;
+-    },
++module.exports = WorkerTile;
+ 
+-    /**
+-     * Enable the "pinch to rotate and zoom" interaction.
+-     * @example
+-     *   map.touchZoomRotate.enable();
+-     */
+-    enable: function () {
+-        if (this.isEnabled()) return;
+-        this._el.addEventListener('touchstart', this._onStart, false);
+-        this._enabled = true;
+-    },
++function WorkerTile(params) {
++    this.coord = params.coord;
++    this.uid = params.uid;
++    this.zoom = params.zoom;
++    this.tileSize = params.tileSize;
++    this.source = params.source;
++    this.overscaling = params.overscaling;
++    this.angle = params.angle;
++    this.pitch = params.pitch;
++    this.showCollisionBoxes = params.showCollisionBoxes;
++}
+ 
+-    /**
+-     * Disable the "pinch to rotate and zoom" interaction.
+-     * @example
+-     *   map.touchZoomRotate.disable();
+-     */
+-    disable: function () {
+-        if (!this.isEnabled()) return;
+-        this._el.removeEventListener('touchstart', this._onStart);
+-        this._enabled = false;
+-    },
++WorkerTile.prototype.parse = function(data, layerFamilies, actor, rawTileData, callback) {
+ 
+-    /**
+-     * Disable the "pinch to rotate" interaction, leaving the "pinch to zoom"
+-     * interaction enabled.
+-     * @example
+-     *   map.touchZoomRotate.disableRotation();
+-     */
+-    disableRotation: function() {
+-        this._rotationDisabled = true;
+-    },
++    this.status = 'parsing';
++    this.data = data;
+ 
+-    /**
+-     * Enable the "pinch to rotate" interaction, undoing a call to
+-     * `disableRotation`.
+-     * @example
+-     *   map.touchZoomRotate.enable();
+-     *   map.touchZoomRotate.enableRotation();
+-     */
+-    enableRotation: function() {
+-        this._rotationDisabled = false;
+-    },
++    this.collisionBoxArray = new CollisionBoxArray();
++    var collisionTile = new CollisionTile(this.angle, this.pitch, this.collisionBoxArray);
++    var featureIndex = new FeatureIndex(this.coord, this.overscaling, collisionTile, data.layers);
++    var sourceLayerCoder = new DictionaryCoder(data.layers ? Object.keys(data.layers).sort() : ['_geojsonTileLayer']);
+ 
+-    _onStart: function (e) {
+-        if (e.touches.length !== 2) return;
++    var stats = { _total: 0 };
+ 
+-        var p0 = DOM.mousePos(this._el, e.touches[0]),
+-            p1 = DOM.mousePos(this._el, e.touches[1]);
++    var tile = this;
++    var bucketsById = {};
++    var bucketsBySourceLayer = {};
++    var i;
++    var layer;
++    var sourceLayerId;
++    var bucket;
+ 
+-        this._startVec = p0.sub(p1);
+-        this._startScale = this._map.transform.scale;
+-        this._startBearing = this._map.transform.bearing;
+-        this._gestureIntent = undefined;
+-        this._inertia = [];
++    // Map non-ref layers to buckets.
++    var bucketIndex = 0;
++    for (var layerId in layerFamilies) {
++        layer = layerFamilies[layerId][0];
+ 
+-        document.addEventListener('touchmove', this._onMove, false);
+-        document.addEventListener('touchend', this._onEnd, false);
+-    },
++        if (layer.source !== this.source) continue;
++        if (layer.ref) continue;
++        if (layer.minzoom && this.zoom < layer.minzoom) continue;
++        if (layer.maxzoom && this.zoom >= layer.maxzoom) continue;
++        if (layer.layout && layer.layout.visibility === 'none') continue;
++        if (data.layers && !data.layers[layer.sourceLayer]) continue;
+ 
+-    _onMove: function (e) {
+-        if (e.touches.length !== 2) return;
++        bucket = Bucket.create({
++            layer: layer,
++            index: bucketIndex++,
++            childLayers: layerFamilies[layerId],
++            zoom: this.zoom,
++            overscaling: this.overscaling,
++            showCollisionBoxes: this.showCollisionBoxes,
++            collisionBoxArray: this.collisionBoxArray,
++            sourceLayerIndex: sourceLayerCoder.encode(layer.sourceLayer || '_geojsonTileLayer')
++        });
++        bucket.createFilter();
+ 
+-        var p0 = DOM.mousePos(this._el, e.touches[0]),
+-            p1 = DOM.mousePos(this._el, e.touches[1]),
+-            p = p0.add(p1).div(2),
+-            vec = p0.sub(p1),
+-            scale = vec.mag() / this._startVec.mag(),
+-            bearing = this._rotationDisabled ? 0 : vec.angleWith(this._startVec) * 180 / Math.PI,
+-            map = this._map;
++        bucketsById[layer.id] = bucket;
+ 
+-        // Determine 'intent' by whichever threshold is surpassed first,
+-        // then keep that state for the duration of this gesture.
+-        if (!this._gestureIntent) {
+-            var scalingSignificantly = (Math.abs(1 - scale) > significantScaleThreshold),
+-                rotatingSignificantly = (Math.abs(bearing) > significantRotateThreshold);
++        if (data.layers) { // vectortile
++            sourceLayerId = layer.sourceLayer;
++            bucketsBySourceLayer[sourceLayerId] = bucketsBySourceLayer[sourceLayerId] || {};
++            bucketsBySourceLayer[sourceLayerId][layer.id] = bucket;
++        }
++    }
+ 
+-            if (rotatingSignificantly) {
+-                this._gestureIntent = 'rotate';
+-            } else if (scalingSignificantly) {
+-                this._gestureIntent = 'zoom';
++    // read each layer, and sort its features into buckets
++    if (data.layers) { // vectortile
++        for (sourceLayerId in bucketsBySourceLayer) {
++            layer = data.layers[sourceLayerId];
++            if (layer) {
++                sortLayerIntoBuckets(layer, bucketsBySourceLayer[sourceLayerId]);
+             }
++        }
++    } else { // geojson
++        sortLayerIntoBuckets(data, bucketsById);
++    }
+ 
+-            if (this._gestureIntent) {
+-                this._startVec = vec;
+-                this._startScale = map.transform.scale;
+-                this._startBearing = map.transform.bearing;
++    function sortLayerIntoBuckets(layer, buckets) {
++        for (var i = 0; i < layer.length; i++) {
++            var feature = layer.feature(i);
++            feature.index = i;
++            for (var id in buckets) {
++                if (buckets[id].filter(feature))
++                    buckets[id].features.push(feature);
+             }
++        }
++    }
+ 
+-        } else {
+-            var param = { duration: 0, around: map.unproject(p) };
++    var buckets = [],
++        symbolBuckets = this.symbolBuckets = [],
++        otherBuckets = [];
+ 
+-            if (this._gestureIntent === 'rotate') {
+-                param.bearing = this._startBearing + bearing;
+-            }
+-            if (this._gestureIntent === 'zoom' || this._gestureIntent === 'rotate') {
+-                param.zoom = map.transform.scaleZoom(this._startScale * scale);
+-            }
++    featureIndex.bucketLayerIDs = {};
+ 
+-            map.stop();
+-            this._drainInertiaBuffer();
+-            this._inertia.push([Date.now(), scale, p]);
++    for (var id in bucketsById) {
++        bucket = bucketsById[id];
++        if (bucket.features.length === 0) continue;
+ 
+-            map.easeTo(param, { originalEvent: e });
+-        }
++        featureIndex.bucketLayerIDs[bucket.index] = bucket.childLayers.map(getLayerId);
+ 
+-        e.preventDefault();
+-    },
++        buckets.push(bucket);
+ 
+-    _onEnd: function (e) {
+-        document.removeEventListener('touchmove', this._onMove);
+-        document.removeEventListener('touchend', this._onEnd);
+-        this._drainInertiaBuffer();
++        if (bucket.type === 'symbol')
++            symbolBuckets.push(bucket);
++        else
++            otherBuckets.push(bucket);
++    }
+ 
+-        var inertia = this._inertia,
+-            map = this._map;
++    var icons = {};
++    var stacks = {};
++    var deps = 0;
+ 
+-        if (inertia.length < 2) {
+-            map.snapToNorth({}, { originalEvent: e });
+-            return;
+-        }
+ 
+-        var last = inertia[inertia.length - 1],
+-            first = inertia[0],
+-            lastScale = map.transform.scaleZoom(this._startScale * last[1]),
+-            firstScale = map.transform.scaleZoom(this._startScale * first[1]),
+-            scaleOffset = lastScale - firstScale,
+-            scaleDuration = (last[0] - first[0]) / 1000,
+-            p = last[2];
++    if (symbolBuckets.length > 0) {
+ 
+-        if (scaleDuration === 0 || lastScale === firstScale) {
+-            map.snapToNorth({}, { originalEvent: e });
+-            return;
++        // Get dependencies for symbol buckets
++        for (i = symbolBuckets.length - 1; i >= 0; i--) {
++            symbolBuckets[i].updateIcons(icons);
++            symbolBuckets[i].updateFont(stacks);
+         }
+ 
+-        // calculate scale/s speed and adjust for increased initial animation speed when easing
+-        var speed = scaleOffset * inertiaLinearity / scaleDuration; // scale/s
+-
+-        if (Math.abs(speed) > inertiaMaxSpeed) {
+-            if (speed > 0) {
+-                speed = inertiaMaxSpeed;
+-            } else {
+-                speed = -inertiaMaxSpeed;
+-            }
++        for (var fontName in stacks) {
++            stacks[fontName] = Object.keys(stacks[fontName]).map(Number);
+         }
++        icons = Object.keys(icons);
+ 
+-        var duration = Math.abs(speed / (inertiaDeceleration * inertiaLinearity)) * 1000,
+-            targetScale = lastScale + speed * duration / 2000;
++        actor.send('get glyphs', {uid: this.uid, stacks: stacks}, function(err, newStacks) {
++            stacks = newStacks;
++            gotDependency(err);
++        });
+ 
+-        if (targetScale < 0) {
+-            targetScale = 0;
++        if (icons.length) {
++            actor.send('get icons', {icons: icons}, function(err, newIcons) {
++                icons = newIcons;
++                gotDependency(err);
++            });
++        } else {
++            gotDependency();
+         }
++    }
+ 
+-        map.easeTo({
+-            zoom: targetScale,
+-            duration: duration,
+-            easing: inertiaEasing,
+-            around: map.unproject(p)
+-        }, { originalEvent: e });
+-    },
++    // immediately parse non-symbol buckets (they have no dependencies)
++    for (i = otherBuckets.length - 1; i >= 0; i--) {
++        parseBucket(this, otherBuckets[i]);
++    }
+ 
+-    _drainInertiaBuffer: function() {
+-        var inertia = this._inertia,
+-            now = Date.now(),
+-            cutoff = 160; // msec
++    if (symbolBuckets.length === 0)
++        return done();
+ 
+-        while (inertia.length > 2 && now - inertia[0][0] > cutoff) inertia.shift();
++    function gotDependency(err) {
++        if (err) return callback(err);
++        deps++;
++        if (deps === 2) {
++            // all symbol bucket dependencies fetched; parse them in proper order
++            for (var i = symbolBuckets.length - 1; i >= 0; i--) {
++                parseBucket(tile, symbolBuckets[i]);
++            }
++            done();
++        }
+     }
+-};
+ 
+-},{"../../util/dom":338,"../../util/util":349}],329:[function(require,module,exports){
+-'use strict';
++    function parseBucket(tile, bucket) {
++        var now = Date.now();
++        bucket.populateBuffers(collisionTile, stacks, icons);
++        var time = Date.now() - now;
+ 
+-/*
+- * Adds the map's position to its page's location hash.
+- * Passed as an option to the map object.
+- *
+- * @class mapboxgl.Hash
+- * @returns {Hash} `this`
+- */
+-module.exports = Hash;
+ 
+-var util = require('../util/util');
++        if (bucket.type !== 'symbol') {
++            for (var i = 0; i < bucket.features.length; i++) {
++                var feature = bucket.features[i];
++                featureIndex.insert(feature, feature.index, bucket.sourceLayerIndex, bucket.index);
++            }
++        }
+ 
+-function Hash() {
+-    util.bindAll([
+-        '_onHashChange',
+-        '_updateHash'
+-    ], this);
+-}
++        bucket.features = null;
+ 
+-Hash.prototype = {
+-    /*
+-     * Map element to listen for coordinate changes
+-     *
+-     * @param {Object} map
+-     * @returns {Hash} `this`
+-     */
+-    addTo: function(map) {
+-        this._map = map;
+-        window.addEventListener('hashchange', this._onHashChange, false);
+-        this._map.on('moveend', this._updateHash);
+-        return this;
+-    },
++        stats._total += time;
++        stats[bucket.id] = (stats[bucket.id] || 0) + time;
++    }
+ 
+-    /*
+-     * Removes hash
+-     *
+-     * @returns {Popup} `this`
+-     */
+-    remove: function() {
+-        window.removeEventListener('hashchange', this._onHashChange, false);
+-        this._map.off('moveend', this._updateHash);
+-        delete this._map;
+-        return this;
+-    },
++    function done() {
++        tile.status = 'done';
+ 
+-    _onHashChange: function() {
+-        var loc = location.hash.replace('#', '').split('/');
+-        if (loc.length >= 3) {
+-            this._map.jumpTo({
+-                center: [+loc[2], +loc[1]],
+-                zoom: +loc[0],
+-                bearing: +(loc[3] || 0)
+-            });
+-            return true;
++        if (tile.redoPlacementAfterDone) {
++            tile.redoPlacement(tile.angle, tile.pitch, null);
++            tile.redoPlacementAfterDone = false;
+         }
+-        return false;
+-    },
+ 
+-    _updateHash: function() {
+-        var center = this._map.getCenter(),
+-            zoom = this._map.getZoom(),
+-            bearing = this._map.getBearing(),
+-            precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2)),
++        var featureIndex_ = featureIndex.serialize();
++        var collisionTile_ = collisionTile.serialize();
++        var collisionBoxArray = tile.collisionBoxArray.serialize();
++        var transferables = [rawTileData].concat(featureIndex_.transferables).concat(collisionTile_.transferables);
+ 
+-            hash = '#' + (Math.round(zoom * 100) / 100) +
+-                '/' + center.lat.toFixed(precision) +
+-                '/' + center.lng.toFixed(precision) +
+-                (bearing ? '/' + (Math.round(bearing * 10) / 10) : '');
++        var nonEmptyBuckets = buckets.filter(isBucketEmpty);
+ 
+-        window.history.replaceState('', '', hash);
++        callback(null, {
++            buckets: nonEmptyBuckets.map(serializeBucket),
++            bucketStats: stats, // TODO put this in a separate message?
++            featureIndex: featureIndex_.data,
++            collisionTile: collisionTile_.data,
++            collisionBoxArray: collisionBoxArray,
++            rawTileData: rawTileData
++        }, getTransferables(nonEmptyBuckets).concat(transferables));
+     }
+ };
+ 
+-},{"../util/util":349}],330:[function(require,module,exports){
+-'use strict';
+-
+-var handlers = {
+-    scrollZoom: require('./handler/scroll_zoom'),
+-    boxZoom: require('./handler/box_zoom'),
+-    dragRotate: require('./handler/drag_rotate'),
+-    dragPan: require('./handler/drag_pan'),
+-    keyboard: require('./handler/keyboard'),
+-    doubleClickZoom: require('./handler/dblclick_zoom'),
+-    touchZoomRotate: require('./handler/touch_zoom_rotate')
+-};
+-
+-var DOM = require('../util/dom'),
+-    util = require('../util/util'),
+-    Point = require('point-geometry');
++WorkerTile.prototype.redoPlacement = function(angle, pitch, showCollisionBoxes) {
++    if (this.status !== 'done') {
++        this.redoPlacementAfterDone = true;
++        this.angle = angle;
++        return {};
++    }
+ 
+-module.exports = Interaction;
++    var collisionTile = new CollisionTile(angle, pitch, this.collisionBoxArray);
+ 
+-function Interaction(map) {
+-    this._map = map;
+-    this._el = map.getCanvasContainer();
++    var buckets = this.symbolBuckets;
+ 
+-    for (var name in handlers) {
+-        map[name] = new handlers[name](map);
++    for (var i = buckets.length - 1; i >= 0; i--) {
++        buckets[i].placeFeatures(collisionTile, showCollisionBoxes);
+     }
+ 
+-    util.bindHandlers(this);
+-}
+-
+-Interaction.prototype = {
+-    enable: function () {
+-        var options = this._map.options,
+-            el = this._el;
+-
+-        for (var name in handlers) {
+-            if (options[name]) this._map[name].enable();
+-        }
++    var collisionTile_ = collisionTile.serialize();
+ 
+-        el.addEventListener('mousedown', this._onMouseDown, false);
+-        el.addEventListener('mouseup', this._onMouseUp, false);
+-        el.addEventListener('mousemove', this._onMouseMove, false);
+-        el.addEventListener('touchstart', this._onTouchStart, false);
+-        el.addEventListener('touchend', this._onTouchEnd, false);
+-        el.addEventListener('touchmove', this._onTouchMove, false);
+-        el.addEventListener('touchcancel', this._onTouchCancel, false);
+-        el.addEventListener('click', this._onClick, false);
+-        el.addEventListener('dblclick', this._onDblClick, false);
+-        el.addEventListener('contextmenu', this._onContextMenu, false);
+-    },
++    var nonEmptyBuckets = buckets.filter(isBucketEmpty);
+ 
+-    disable: function () {
+-        var options = this._map.options,
+-            el = this._el;
++    return {
++        result: {
++            buckets: nonEmptyBuckets.map(serializeBucket),
++            collisionTile: collisionTile_.data
++        },
++        transferables: getTransferables(nonEmptyBuckets).concat(collisionTile_.transferables)
++    };
++};
+ 
+-        for (var name in handlers) {
+-            if (options[name]) this._map[name].disable();
++function isBucketEmpty(bucket) {
++    for (var programName in bucket.arrayGroups) {
++        var programArrayGroups = bucket.arrayGroups[programName];
++        for (var k = 0; k < programArrayGroups.length; k++) {
++            var programArrayGroup = programArrayGroups[k];
++            for (var layoutOrPaint in programArrayGroup) {
++                var arrays = programArrayGroup[layoutOrPaint];
++                for (var bufferName in arrays) {
++                    if (arrays[bufferName].length > 0) return true;
++                }
++            }
+         }
++    }
++    return false;
++}
+ 
+-        el.removeEventListener('mousedown', this._onMouseDown);
+-        el.removeEventListener('mouseup', this._onMouseUp);
+-        el.removeEventListener('mousemove', this._onMouseMove);
+-        el.removeEventListener('touchstart', this._onTouchStart);
+-        el.removeEventListener('touchend', this._onTouchEnd);
+-        el.removeEventListener('touchmove', this._onTouchMove);
+-        el.removeEventListener('touchcancel', this._onTouchCancel);
+-        el.removeEventListener('click', this._onClick);
+-        el.removeEventListener('dblclick', this._onDblClick);
+-        el.removeEventListener('contextmenu', this._onContextMenu);
+-    },
+-
+-    _onMouseDown: function (e) {
+-        this._map.stop();
+-        this._startPos = DOM.mousePos(this._el, e);
+-        this._fireMouseEvent('mousedown', e);
+-    },
+-
+-    _onMouseUp: function (e) {
+-        var map = this._map,
+-            rotating = map.dragRotate && map.dragRotate.isActive();
++function serializeBucket(bucket) {
++    return bucket.serialize();
++}
+ 
+-        if (this._contextMenuEvent && !rotating) {
+-            this._fireMouseEvent('contextmenu', this._contextMenuEvent);
++function getTransferables(buckets) {
++    var transferables = [];
++    for (var i in buckets) {
++        var bucket = buckets[i];
++        for (var programName in bucket.arrayGroups) {
++            var programArrayGroups = bucket.arrayGroups[programName];
++            for (var k = 0; k < programArrayGroups.length; k++) {
++                var programArrayGroup = programArrayGroups[k];
++                for (var layoutOrPaint in programArrayGroup) {
++                    var arrays = programArrayGroup[layoutOrPaint];
++                    for (var bufferName in arrays) {
++                        transferables.push(arrays[bufferName].arrayBuffer);
++                    }
++                }
++            }
+         }
++    }
++    return transferables;
++}
+ 
+-        this._contextMenuEvent = null;
+-        this._fireMouseEvent('mouseup', e);
+-    },
++function getLayerId(layer) {
++    return layer.id;
++}
+ 
+-    _onMouseMove: function (e) {
+-        var map = this._map,
+-            el = this._el;
++},{"../data/bucket":260,"../data/feature_index":266,"../symbol/collision_box":319,"../symbol/collision_tile":321,"../util/dictionary_coder":353}],300:[function(require,module,exports){
++'use strict';
+ 
+-        if (map.dragPan && map.dragPan.isActive()) return;
+-        if (map.dragRotate && map.dragRotate.isActive()) return;
++module.exports = AnimationLoop;
+ 
+-        var target = e.toElement || e.target;
+-        while (target && target !== el) target = target.parentNode;
+-        if (target !== el) return;
++function AnimationLoop() {
++    this.n = 0;
++    this.times = [];
++}
+ 
+-        this._fireMouseEvent('mousemove', e);
+-    },
++// Are all animations done?
++AnimationLoop.prototype.stopped = function() {
++    this.times = this.times.filter(function(t) {
++        return t.time >= (new Date()).getTime();
++    });
++    return !this.times.length;
++};
+ 
+-    _onTouchStart: function (e) {
+-        this._map.stop();
+-        this._fireTouchEvent('touchstart', e);
++// Add a new animation that will run t milliseconds
++// Returns an id that can be used to cancel it layer
++AnimationLoop.prototype.set = function(t) {
++    this.times.push({ id: this.n, time: t + (new Date()).getTime() });
++    return this.n++;
++};
+ 
+-        if (!e.touches || e.touches.length > 1) return;
++// Cancel an animation
++AnimationLoop.prototype.cancel = function(n) {
++    this.times = this.times.filter(function(t) {
++        return t.id !== n;
++    });
++};
+ 
+-        if (!this._tapped) {
+-            this._tapped = setTimeout(this._onTouchTimeout, 300);
++},{}],301:[function(require,module,exports){
++'use strict';
+ 
+-        } else {
+-            clearTimeout(this._tapped);
+-            this._tapped = null;
+-            this._fireMouseEvent('dblclick', e);
+-        }
+-    },
++var Evented = require('../util/evented');
++var ajax = require('../util/ajax');
++var browser = require('../util/browser');
++var normalizeURL = require('../util/mapbox').normalizeSpriteURL;
+ 
+-    _onTouchMove: function (e) {
+-        this._fireTouchEvent('touchmove', e);
+-    },
++module.exports = ImageSprite;
+ 
+-    _onTouchEnd: function (e) {
+-        this._fireTouchEvent('touchend', e);
+-    },
++function ImageSprite(base) {
++    this.base = base;
++    this.retina = browser.devicePixelRatio > 1;
+ 
+-    _onTouchCancel: function (e) {
+-        this._fireTouchEvent('touchcancel', e);
+-    },
++    var format = this.retina ? '@2x' : '';
+ 
+-    _onTouchTimeout: function () {
+-        this._tapped = null;
+-    },
++    ajax.getJSON(normalizeURL(base, format, '.json'), function(err, data) {
++        if (err) {
++            this.fire('error', {error: err});
++            return;
++        }
+ 
+-    _onClick: function (e) {
+-        var pos = DOM.mousePos(this._el, e);
++        this.data = data;
++        if (this.img) this.fire('load');
++    }.bind(this));
+ 
+-        if (pos.equals(this._startPos)) {
+-            this._fireMouseEvent('click', e);
++    ajax.getImage(normalizeURL(base, format, '.png'), function(err, img) {
++        if (err) {
++            this.fire('error', {error: err});
++            return;
+         }
+-    },
+ 
+-    _onDblClick: function (e) {
+-        this._fireMouseEvent('dblclick', e);
+-        e.preventDefault();
+-    },
++        // premultiply the sprite
++        var data = img.getData();
++        var newdata = img.data = new Uint8Array(data.length);
++        for (var i = 0; i < data.length; i += 4) {
++            var alpha = data[i + 3] / 255;
++            newdata[i + 0] = data[i + 0] * alpha;
++            newdata[i + 1] = data[i + 1] * alpha;
++            newdata[i + 2] = data[i + 2] * alpha;
++            newdata[i + 3] = data[i + 3];
++        }
+ 
+-    _onContextMenu: function (e) {
+-        this._contextMenuEvent = e;
+-        e.preventDefault();
+-    },
++        this.img = img;
++        if (this.data) this.fire('load');
++    }.bind(this));
++}
+ 
+-    _fireMouseEvent: function (type, e) {
+-        var pos = DOM.mousePos(this._el, e);
++ImageSprite.prototype = Object.create(Evented);
+ 
+-        return this._map.fire(type, {
+-            lngLat: this._map.unproject(pos),
+-            point: pos,
+-            originalEvent: e
+-        });
+-    },
++ImageSprite.prototype.toJSON = function() {
++    return this.base;
++};
+ 
+-    _fireTouchEvent: function (type, e) {
+-        var touches = DOM.touchPos(this._el, e),
+-            singular = touches.reduce(function (prev, curr, i, arr) {
+-                return prev.add(curr.div(arr.length));
+-            }, new Point(0, 0));
++ImageSprite.prototype.loaded = function() {
++    return !!(this.data && this.img);
++};
+ 
+-        return this._map.fire(type, {
+-            lngLat: this._map.unproject(singular),
+-            point: singular,
+-            lngLats: touches.map(function(t) { return this._map.unproject(t); }, this),
+-            points: touches,
+-            originalEvent: e
+-        });
++ImageSprite.prototype.resize = function(/*gl*/) {
++    if (browser.devicePixelRatio > 1 !== this.retina) {
++        var newSprite = new ImageSprite(this.base);
++        newSprite.on('load', function() {
++            this.img = newSprite.img;
++            this.data = newSprite.data;
++            this.retina = newSprite.retina;
++        }.bind(this));
+     }
+ };
+ 
++function SpritePosition() {}
++SpritePosition.prototype = { x: 0, y: 0, width: 0, height: 0, pixelRatio: 1, sdf: false };
+ 
+-/**
+- * When an event [fires]{@link #Evented.fire} as a result of a
+- * user interaction, the event will be called with an EventData
+- * object containing the original DOM event along with coordinates of
+- * the event target.
+- *
+- * @typedef {Object} EventData
+- * @property {Event} originalEvent The original DOM event
+- * @property {Point} point The pixel location of the event
+- * @property {LngLat} lngLat The geographic location of the event
+- * @example
+- * map.on('click', function(data) {
+- *   var e = data && data.originalEvent;
+- *   console.log('got click ' + (e ? 'button = ' + e.button : ''));
+- * });
+- */
++ImageSprite.prototype.getSpritePosition = function(name) {
++    if (!this.loaded()) return new SpritePosition();
+ 
+-/**
+- * Mouse down event.
+- *
+- * @event mousedown
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [mousedown event](https://developer.mozilla.org/en-US/docs/Web/Events/mousedown)
+- */
++    var pos = this.data && this.data[name];
++    if (pos && this.img) return pos;
+ 
+-/**
+- * Mouse up event.
+- *
+- * @event mouseup
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [mouseup event](https://developer.mozilla.org/en-US/docs/Web/Events/mouseup)
+- */
++    return new SpritePosition();
++};
+ 
+-/**
+- * Mouse move event.
+- *
+- * @event mousemove
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [mousemouse event](https://developer.mozilla.org/en-US/docs/Web/Events/mousemove)
+- */
++},{"../util/ajax":347,"../util/browser":348,"../util/evented":354,"../util/mapbox":359}],302:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Touch start event.
+- *
+- * @event touchstart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchstart event](https://developer.mozilla.org/en-US/docs/Web/Events/touchstart).
+- */
++var parseCSSColor = require('csscolorparser').parseCSSColor;
++var util = require('../util/util');
+ 
+-/**
+- * Touch end event.
+- *
+- * @event touchend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
+- */
++var colorCache = {};
+ 
+-/**
+- * Touch move event.
+- *
+- * @event touchmove
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchmove event](https://developer.mozilla.org/en-US/docs/Web/Events/touchmove).
+- */
++function parseColor(input) {
+ 
+-/**
+- * Touch cancel event.
+- *
+- * @event touchcancel
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
+- */
++    if (colorCache[input]) {
++        return colorCache[input];
+ 
+-/**
+- * Click event.
+- *
+- * @event click
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data: a [click event](https://developer.mozilla.org/en-US/docs/Web/Events/click)
+- */
++    // RGBA array
++    } else if (Array.isArray(input)) {
++        return input;
+ 
+-/**
+- * Double click event.
+- *
+- * @event dblclick
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data
+- */
++    // GL function
++    } else if (input && input.stops) {
++        return util.extend({}, input, {
++            stops: input.stops.map(parseFunctionStopColor)
++        });
+ 
+-/**
+- * Context menu event.
+- *
+- * @event contextmenu
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if available
+- */
++    // Color string
++    } else if (typeof input === 'string') {
++        var parsedColor = parseCSSColor(input);
++        if (!parsedColor) { throw new Error('Invalid color ' + input); }
+ 
+-/**
+- * Load event. This event is emitted immediately after all necessary resources have been downloaded
+- * and the first visually complete rendering has occurred.
+- *
+- * @event load
+- * @memberof Map
+- * @instance
+- * @type {Object}
+- */
++        var output = colorDowngrade(parsedColor);
++        colorCache[input] = output;
++        return output;
+ 
+-/**
+- * Move start event. This event is emitted just before the map begins a transition from one
+- * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event movestart
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++    } else {
++        throw new Error('Invalid color ' + input);
++    }
+ 
+-/**
+- * Move event. This event is emitted repeatedly during animated transitions from one view to
+- * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event move
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++}
+ 
+-/**
+- * Move end event. This event is emitted just after the map completes a transition from one
+- * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+- *
+- * @event moveend
+- * @memberof Map
+- * @instance
+- * @property {EventData} data Original event data, if fired interactively
+- */
++function parseFunctionStopColor(stop) {
++    return [stop[0], parseColor(stop[1])];
++}
++
++function colorDowngrade(color) {
++    return [color[0] / 255, color[1] / 255, color[2] / 255, color[3] / 1];
++}
+ 
+-},{"../util/dom":338,"../util/util":349,"./handler/box_zoom":322,"./handler/dblclick_zoom":323,"./handler/drag_pan":324,"./handler/drag_rotate":325,"./handler/keyboard":326,"./handler/scroll_zoom":327,"./handler/touch_zoom_rotate":328,"point-geometry":404}],331:[function(require,module,exports){
++module.exports = parseColor;
++
++},{"../util/util":362,"csscolorparser":84}],303:[function(require,module,exports){
+ 'use strict';
+ 
+-var Canvas = require('../util/canvas');
++var Evented = require('../util/evented');
++var StyleLayer = require('./style_layer');
++var ImageSprite = require('./image_sprite');
++var GlyphSource = require('../symbol/glyph_source');
++var SpriteAtlas = require('../symbol/sprite_atlas');
++var LineAtlas = require('../render/line_atlas');
+ var util = require('../util/util');
++var ajax = require('../util/ajax');
++var normalizeURL = require('../util/mapbox').normalizeStyleURL;
+ var browser = require('../util/browser');
+-var Evented = require('../util/evented');
+-var DOM = require('../util/dom');
+-
+-var Style = require('../style/style');
+-var AnimationLoop = require('../style/animation_loop');
+-var Painter = require('../render/painter');
+-
+-var Transform = require('../geo/transform');
+-var Hash = require('./hash');
+-
+-var Interaction = require('./interaction');
+-
+-var Camera = require('./camera');
+-var LngLat = require('../geo/lng_lat');
+-var LngLatBounds = require('../geo/lng_lat_bounds');
+-var Point = require('point-geometry');
+-var Attribution = require('./control/attribution');
+-
+-var defaultMinZoom = 0;
+-var defaultMaxZoom = 20;
+-
+-/**
+- * Creates a map instance. This is usually the beginning of your map:
+- * you tell Mapbox GL JS where to put the map by specifying a `container`
+- * option, and the map's style with `style` and other attributes of the map,
+- * and in return Mapbox GL JS initializes the map on your page and returns
+- * a map variable that lets you programmatically call methods on the map.
+- * @class Map
+- * @param {Object} options
+- * @param {string|Element} options.container HTML element to initialize the map in (or element id as string)
+- * @param {number} [options.minZoom=0] Minimum zoom of the map
+- * @param {number} [options.maxZoom=20] Maximum zoom of the map
+- * @param {Object|string} [options.style] Map style. This must be an an object conforming to the schema described in the [style reference](https://mapbox.com/mapbox-gl-style-spec/), or a URL to a JSON style. To load a style from the Mapbox API, you can use a URL of the form `mapbox://styles/:owner/:style`, where `:owner` is your Mapbox account name and `:style` is the style ID. Or you can use one of the predefined Mapbox styles:
+- *   * `mapbox://styles/mapbox/basic-v8` - Simple and flexible starting template.
+- *   * `mapbox://styles/mapbox/bright-v8` - Template for complex custom basemaps.
+- *   * `mapbox://styles/mapbox/streets-v8` - A ready-to-use basemap, perfect for minor customization or incorporating your own data.
+- *   * `mapbox://styles/mapbox/light-v8` - Subtle light backdrop for data vizualizations.
+- *   * `mapbox://styles/mapbox/dark-v8` - Subtle dark backdrop for data vizualizations.
+- * @param {boolean} [options.hash=false] If `true`, the map will track and update the page URL according to map position
+- * @param {boolean} [options.interactive=true] If `false`, no mouse, touch, or keyboard listeners are attached to the map, so it will not respond to input
+- * @param {number} [options.bearingSnap=7] Snap to north threshold in degrees.
+- * @param {Array} [options.classes] Style class names with which to initialize the map
+- * @param {boolean} [options.attributionControl=true] If `true`, an attribution control will be added to the map.
+- * @param {boolean} [options.failIfMajorPerformanceCaveat=false] If `true`, map creation will fail if the implementation determines that the performance of the created WebGL context would be dramatically lower than expected.
+- * @param {boolean} [options.preserveDrawingBuffer=false] If `true`, The maps canvas can be exported to a PNG using `map.getCanvas().toDataURL();`. This is false by default as a performance optimization.
+- * @param {LngLatBounds|Array<Array<number>>} [options.maxBounds] If set, the map is constrained to the given bounds.
+- * @param {boolean} [options.scrollZoom=true] If `true`, enable the "scroll to zoom" interaction (see `ScrollZoomHandler`)
+- * @param {boolean} [options.boxZoom=true] If `true`, enable the "box zoom" interaction (see `BoxZoomHandler`)
+- * @param {boolean} [options.dragRotate=true] If `true`, enable the "drag to rotate" interaction (see `DragRotateHandler`).
+- * @param {boolean} [options.dragPan=true] If `true`, enable the "drag to pan" interaction (see `DragPanHandler`).
+- * @param {boolean} [options.keyboard=true] If `true`, enable keyboard shortcuts (see `KeyboardHandler`).
+- * @param {boolean} [options.doubleClickZoom=true] If `true`, enable the "double click to zoom" interaction (see `DoubleClickZoomHandler`).
+- * @param {boolean} [options.touchZoomRotate=true] If `true`, enable the "pinch to rotate and zoom" interaction (see `TouchZoomRotateHandler`).
+- * @example
+- * var map = new mapboxgl.Map({
+- *   container: 'map',
+- *   center: [-122.420679, 37.772537],
+- *   zoom: 13,
+- *   style: style_object,
+- *   hash: true
+- * });
+- */
+-var Map = module.exports = function(options) {
+-
+-    options = util.inherit(this.options, options);
+-    this._interactive = options.interactive;
+-    this._failIfMajorPerformanceCaveat = options.failIfMajorPerformanceCaveat;
+-    this._preserveDrawingBuffer = options.preserveDrawingBuffer;
++var Dispatcher = require('../util/dispatcher');
++var AnimationLoop = require('./animation_loop');
++var validateStyle = require('./validate_style');
++var Source = require('../source/source');
++var styleSpec = require('./style_spec');
++var StyleFunction = require('./style_function');
+ 
+-    if (typeof options.container === 'string') {
+-        this._container = document.getElementById(options.container);
+-    } else {
+-        this._container = options.container;
+-    }
++module.exports = Style;
+ 
+-    this.animationLoop = new AnimationLoop();
+-    this.transform = new Transform(options.minZoom, options.maxZoom);
++function Style(stylesheet, animationLoop) {
++    this.animationLoop = animationLoop || new AnimationLoop();
++    this.dispatcher = new Dispatcher(Math.max(browser.hardwareConcurrency - 1, 1), this);
++    this.spriteAtlas = new SpriteAtlas(512, 512);
++    this.lineAtlas = new LineAtlas(256, 512);
+ 
+-    if (options.maxBounds) {
+-        this.setMaxBounds(options.maxBounds);
+-    }
++    this._layers = {};
++    this._order  = [];
++    this._groups = [];
++    this.sources = {};
++    this.zoomHistory = {};
+ 
+     util.bindAll([
+-        '_forwardStyleEvent',
+         '_forwardSourceEvent',
+-        '_forwardLayerEvent',
+         '_forwardTileEvent',
+-        '_onStyleLoad',
+-        '_onStyleChange',
+-        '_onSourceAdd',
+-        '_onSourceRemove',
+-        '_onSourceUpdate',
+-        '_onWindowResize',
+-        'onError',
+-        '_update',
+-        '_render'
++        '_forwardLayerEvent',
++        '_redoPlacement'
+     ], this);
+ 
+-    this._setupContainer();
+-    this._setupPainter();
+-
+-    this.on('move', this._update.bind(this, false));
+-    this.on('zoom', this._update.bind(this, true));
+-    this.on('moveend', function() {
+-        this.animationLoop.set(300); // text fading
+-        this._rerender();
+-    }.bind(this));
+-
+-    if (typeof window !== 'undefined') {
+-        window.addEventListener('resize', this._onWindowResize, false);
+-    }
+-
+-    this.interaction = new Interaction(this);
+-
+-    if (options.interactive) {
+-        this.interaction.enable();
+-    }
+-
+-    this._hash = options.hash && (new Hash()).addTo(this);
+-    // don't set position from options if set through hash
+-    if (!this._hash || !this._hash._onHashChange()) {
+-        this.jumpTo(options);
+-    }
+-
+-    this.stacks = {};
+-    this._classes = [];
++    this._resetUpdates();
+ 
+-    this.resize();
++    var loaded = function(err, stylesheet) {
++        if (err) {
++            this.fire('error', {error: err});
++            return;
++        }
+ 
+-    if (options.classes) this.setClasses(options.classes);
+-    if (options.style) this.setStyle(options.style);
+-    if (options.attributionControl) this.addControl(new Attribution(options.attributionControl));
++        if (validateStyle.emitErrors(this, validateStyle(stylesheet))) return;
+ 
+-    this.on('style.error', this.onError);
+-    this.on('source.error', this.onError);
+-    this.on('tile.error', this.onError);
+-    this.on('layer.error', this.onError);
+-};
++        this._loaded = true;
++        this.stylesheet = stylesheet;
+ 
+-util.extend(Map.prototype, Evented);
+-util.extend(Map.prototype, Camera.prototype);
+-util.extend(Map.prototype, /** @lends Map.prototype */{
++        this.updateClasses();
+ 
+-    options: {
+-        center: [0, 0],
+-        zoom: 0,
+-        bearing: 0,
+-        pitch: 0,
++        var sources = stylesheet.sources;
++        for (var id in sources) {
++            this.addSource(id, sources[id]);
++        }
+ 
+-        minZoom: defaultMinZoom,
+-        maxZoom: defaultMaxZoom,
++        if (stylesheet.sprite) {
++            this.sprite = new ImageSprite(stylesheet.sprite);
++            this.sprite.on('load', this.fire.bind(this, 'change'));
++        }
+ 
+-        interactive: true,
++        this.glyphSource = new GlyphSource(stylesheet.glyphs);
++        this._resolve();
++        this.fire('load');
++    }.bind(this);
+ 
+-        scrollZoom: true,
+-        boxZoom: true,
+-        dragRotate: true,
+-        dragPan: true,
+-        keyboard: true,
+-        doubleClickZoom: true,
+-        touchZoomRotate: true,
++    if (typeof stylesheet === 'string') {
++        ajax.getJSON(normalizeURL(stylesheet), loaded);
++    } else {
++        browser.frame(loaded.bind(this, null, stylesheet));
++    }
+ 
+-        bearingSnap: 7,
++    this.on('source.load', function(event) {
++        var source = event.source;
++        if (source && source.vectorLayerIds) {
++            for (var layerId in this._layers) {
++                var layer = this._layers[layerId];
++                if (layer.source === source.id) {
++                    this._validateLayer(layer);
++                }
++            }
++        }
++    });
++}
+ 
+-        hash: false,
++Style.prototype = util.inherit(Evented, {
++    _loaded: false,
+ 
+-        attributionControl: true,
++    _validateLayer: function(layer) {
++        var source = this.sources[layer.source];
+ 
+-        failIfMajorPerformanceCaveat: false,
+-        preserveDrawingBuffer: false
+-    },
++        if (!layer.sourceLayer) return;
++        if (!source) return;
++        if (!source.vectorLayerIds) return;
+ 
+-    /**
+-     * Adds a control to the map, calling `control.addTo(this)`.
+-     *
+-     * @param {Control} control
+-     * @returns {Map} `this`
+-     */
+-    addControl: function(control) {
+-        control.addTo(this);
+-        return this;
++        if (source.vectorLayerIds.indexOf(layer.sourceLayer) === -1) {
++            this.fire('error', {
++                error: new Error(
++                    'Source layer "' + layer.sourceLayer + '" ' +
++                    'does not exist on source "' + source.id + '" ' +
++                    'as specified by style layer "' + layer.id + '"'
++                )
++            });
++        }
+     },
+ 
+-    /**
+-     * Adds a style class to a map.
+-     *
+-     * @param {string} klass name of style class
+-     * @param {StyleOptions} [options]
+-     * @fires change
+-     * @returns {Map} `this`
+-     */
+-    addClass: function(klass, options) {
+-        if (this._classes.indexOf(klass) >= 0 || klass === '') return this;
+-        this._classes.push(klass);
+-        this._classOptions = options;
++    loaded: function() {
++        if (!this._loaded)
++            return false;
+ 
+-        if (this.style) this.style.updateClasses();
+-        return this._update(true);
+-    },
++        for (var id in this.sources)
++            if (!this.sources[id].loaded())
++                return false;
+ 
+-    /**
+-     * Removes a style class from a map.
+-     *
+-     * @param {string} klass name of style class
+-     * @param {StyleOptions} [options]
+-     * @fires change
+-     * @returns {Map} `this`
+-     */
+-    removeClass: function(klass, options) {
+-        var i = this._classes.indexOf(klass);
+-        if (i < 0 || klass === '') return this;
+-        this._classes.splice(i, 1);
+-        this._classOptions = options;
++        if (this.sprite && !this.sprite.loaded())
++            return false;
+ 
+-        if (this.style) this.style.updateClasses();
+-        return this._update(true);
++        return true;
+     },
+ 
+-    /**
+-     * Helper method to add more than one class.
+-     *
+-     * @param {Array<string>} klasses An array of class names
+-     * @param {StyleOptions} [options]
+-     * @fires change
+-     * @returns {Map} `this`
+-     */
+-    setClasses: function(klasses, options) {
+-        var uniqueClasses = {};
+-        for (var i = 0; i < klasses.length; i++) {
+-            if (klasses[i] !== '') uniqueClasses[klasses[i]] = true;
+-        }
+-        this._classes = Object.keys(uniqueClasses);
+-        this._classOptions = options;
++    _resolve: function() {
++        var layer, layerJSON;
+ 
+-        if (this.style) this.style.updateClasses();
+-        return this._update(true);
+-    },
++        this._layers = {};
++        this._order  = this.stylesheet.layers.map(function(layer) {
++            return layer.id;
++        });
+ 
+-    /**
+-     * Check whether a style class is active.
+-     *
+-     * @param {string} klass Name of style class
+-     * @returns {boolean}
+-     */
+-    hasClass: function(klass) {
+-        return this._classes.indexOf(klass) >= 0;
+-    },
++        // resolve all layers WITHOUT a ref
++        for (var i = 0; i < this.stylesheet.layers.length; i++) {
++            layerJSON = this.stylesheet.layers[i];
++            if (layerJSON.ref) continue;
++            layer = StyleLayer.create(layerJSON);
++            this._layers[layer.id] = layer;
++            layer.on('error', this._forwardLayerEvent);
++        }
+ 
+-    /**
+-     * Return an array of the current active style classes.
+-     *
+-     * @returns {boolean}
+-     */
+-    getClasses: function() {
+-        return this._classes;
+-    },
++        // resolve all layers WITH a ref
++        for (var j = 0; j < this.stylesheet.layers.length; j++) {
++            layerJSON = this.stylesheet.layers[j];
++            if (!layerJSON.ref) continue;
++            var refLayer = this.getLayer(layerJSON.ref);
++            layer = StyleLayer.create(layerJSON, refLayer);
++            this._layers[layer.id] = layer;
++            layer.on('error', this._forwardLayerEvent);
++        }
+ 
+-    /**
+-     * Detect the map's new width and height and resize it. Given
+-     * the `container` of the map specified in the Map constructor,
+-     * this reads the new width from the DOM: so this method is often
+-     * called after the map's container is resized by another script
+-     * or the map is shown after being initially hidden with CSS.
+-     *
+-     * @returns {Map} `this`
+-     */
+-    resize: function() {
+-        var width = 0, height = 0;
++        this._groupLayers();
++        this._updateWorkerLayers();
++    },
+ 
+-        if (this._container) {
+-            width = this._container.offsetWidth || 400;
+-            height = this._container.offsetHeight || 300;
+-        }
++    _groupLayers: function() {
++        var group;
+ 
+-        this._canvas.resize(width, height);
+-        this.transform.resize(width, height);
+-        this.painter.resize(width, height);
++        this._groups = [];
+ 
+-        return this
+-            .fire('movestart')
+-            .fire('move')
+-            .fire('resize')
+-            .fire('moveend');
+-    },
++        // Split into groups of consecutive top-level layers with the same source.
++        for (var i = 0; i < this._order.length; ++i) {
++            var layer = this._layers[this._order[i]];
+ 
+-    /**
+-     * Get the map's geographical bounds.
+-     *
+-     * @returns {LngLatBounds}
+-     */
+-    getBounds: function() {
+-        var bounds = new LngLatBounds(
+-            this.transform.pointLocation(new Point(0, 0)),
+-            this.transform.pointLocation(this.transform.size));
++            if (!group || layer.source !== group.source) {
++                group = [];
++                group.source = layer.source;
++                this._groups.push(group);
++            }
+ 
+-        if (this.transform.angle || this.transform.pitch) {
+-            bounds.extend(this.transform.pointLocation(new Point(this.transform.size.x, 0)));
+-            bounds.extend(this.transform.pointLocation(new Point(0, this.transform.size.y)));
++            group.push(layer);
+         }
++    },
+ 
+-        return bounds;
++    _updateWorkerLayers: function(ids) {
++        this.dispatcher.broadcast(ids ? 'update layers' : 'set layers', this._serializeLayers(ids));
+     },
+ 
+-    /**
+-     * Set constraint on the map's geographical bounds. Pan or zoom operations that would result in
+-     * displaying regions that fall outside of the bounds instead result in displaying the map at the
+-     * closest point and/or zoom level of the requested operation that is within the max bounds.
+-     *
+-     * @param {LngLatBounds | Array<Array<number>> | null | undefined} lnglatbounds Desired max bounds of the map. If null or undefined, function removes any bounds constraints on the map.
+-     * @returns {Map} `this`
+-     */
+-    setMaxBounds: function (lnglatbounds) {
+-        if (lnglatbounds) {
+-            var b = LngLatBounds.convert(lnglatbounds);
+-            this.transform.lngRange = [b.getWest(), b.getEast()];
+-            this.transform.latRange = [b.getSouth(), b.getNorth()];
+-            this.transform._constrain();
+-            this._update();
+-        } else if (lnglatbounds === null || lnglatbounds === undefined) {
+-            this.transform.lngRange = [];
+-            this.transform.latRange = [];
+-            this._update();
++    _serializeLayers: function(ids) {
++        ids = ids || this._order;
++        var serialized = [];
++        var options = {includeRefProperties: true};
++        for (var i = 0; i < ids.length; i++) {
++            serialized.push(this._layers[ids[i]].serialize(options));
+         }
+-        return this;
+-
++        return serialized;
+     },
+-    /**
+-     * Set the map's minimum zoom level, and zooms map to that level if it is
+-     * currently below it. If no parameter provided, unsets the current
+-     * minimum zoom (sets it to 0)
+-     *
+-     * @param {number} minZoom Minimum zoom level. Must be between 0 and 20.
+-     * @returns {Map} `this
+-     */
+-    setMinZoom: function(minZoom) {
+ 
+-        minZoom = minZoom === null || minZoom === undefined ? defaultMinZoom : minZoom;
++    _applyClasses: function(classes, options) {
++        if (!this._loaded) return;
+ 
+-        if (minZoom >= defaultMinZoom && minZoom <= this.transform.maxZoom) {
+-            this.transform.minZoom = minZoom;
+-            this._update();
++        classes = classes || [];
++        options = options || {transition: true};
++        var transition = this.stylesheet.transition || {};
+ 
+-            if (this.getZoom() < minZoom) this.setZoom(minZoom);
++        var layers = this._updates.allPaintProps ? this._layers : this._updates.paintProps;
+ 
+-            return this;
++        for (var id in layers) {
++            var layer = this._layers[id];
++            var props = this._updates.paintProps[id];
+ 
+-        } else throw new Error('minZoom must be between ' + defaultMinZoom + ' and the current maxZoom, inclusive');
++            if (this._updates.allPaintProps || props.all) {
++                layer.updatePaintTransitions(classes, options, transition, this.animationLoop);
++            } else {
++                for (var paintName in props) {
++                    this._layers[id].updatePaintTransition(paintName, classes, options, transition, this.animationLoop);
++                }
++            }
++        }
+     },
+ 
+-    /**
+-     * Set the map's maximum zoom level, and zooms map to that level if it is
+-     * currently above it. If no parameter provided, unsets the current
+-     * maximum zoom (sets it to 20)
+-     * @param {number} maxZoom Maximum zoom level. Must be between 0 and 20.
+-     * @returns {Map} `this`
+-     */
+-    setMaxZoom: function(maxZoom) {
++    _recalculate: function(z) {
++        for (var sourceId in this.sources)
++            this.sources[sourceId].used = false;
+ 
+-        maxZoom = maxZoom === null || maxZoom === undefined ? defaultMaxZoom : maxZoom;
++        this._updateZoomHistory(z);
+ 
+-        if (maxZoom >= this.transform.minZoom && maxZoom <= defaultMaxZoom) {
+-            this.transform.maxZoom = maxZoom;
+-            this._update();
++        this.rasterFadeDuration = 300;
++        for (var layerId in this._layers) {
++            var layer = this._layers[layerId];
+ 
+-            if (this.getZoom() > maxZoom) this.setZoom(maxZoom);
++            layer.recalculate(z, this.zoomHistory);
++            if (!layer.isHidden(z) && layer.source) {
++                this.sources[layer.source].used = true;
++            }
++        }
+ 
+-            return this;
++        var maxZoomTransitionDuration = 300;
++        if (Math.floor(this.z) !== Math.floor(z)) {
++            this.animationLoop.set(maxZoomTransitionDuration);
++        }
+ 
+-        } else throw new Error('maxZoom must be between the current minZoom and ' + defaultMaxZoom + ', inclusive');
+-    },
+-    /**
+-     * Get pixel coordinates relative to the map container, given a geographical
+-     * location.
+-     *
+-     * @param {LngLat} lnglat
+-     * @returns {Object} `x` and `y` coordinates
+-     */
+-    project: function(lnglat) {
+-        return this.transform.locationPoint(LngLat.convert(lnglat));
++        this.z = z;
++        this.fire('zoom');
+     },
+ 
+-    /**
+-     * Get geographical coordinates, given pixel coordinates.
+-     *
+-     * @param {Array<number>} point [x, y] pixel coordinates
+-     * @returns {LngLat}
+-     */
+-    unproject: function(point) {
+-        return this.transform.pointLocation(Point.convert(point));
+-    },
++    _updateZoomHistory: function(z) {
+ 
+-    /**
+-     * Query rendered features within a point or rectangle.
+-     *
+-     * @param {Point|Array<number>|Array<Point>|Array<Array<number>>} [pointOrBox] Either [x, y] pixel coordinates of a point, or [[x1, y1], [x2, y2]] pixel coordinates of opposite corners of bounding rectangle. Optional: use entire viewport if omitted.
+-     * @param {Object} params
+-     * @param {Array<string>} [params.layers] Only query features from layers with these layer IDs.
+-     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
+-     *
+-     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features
+-     * matching the query parameters. The GeoJSON properties of each feature are taken from
+-     * the original source. Each feature object also contains a top-level `layer`
+-     * property whose value is an object representing the style layer to which the
+-     * feature belongs. Layout and paint properties in this object contain values
+-     * which are fully evaluated for the given zoom level and feature.
+-     *
+-     * @example
+-     * var features = map.queryRenderedFeatures([20, 35], { layers: ['my-layer-name'] });
+-     *
+-     * @example
+-     * var features = map.queryRenderedFeatures([[10, 20], [30, 50]], { layers: ['my-layer-name'] });
+-     */
+-    queryRenderedFeatures: function(pointOrBox, params) {
+-        if (!(pointOrBox instanceof Point || Array.isArray(pointOrBox))) {
+-            params = pointOrBox;
+-            pointOrBox = undefined;
+-        }
+-        var queryGeometry = this._makeQueryGeometry(pointOrBox);
+-        return this.style.queryRenderedFeatures(queryGeometry, params, this.transform.zoom, this.transform.angle);
+-    },
++        var zh = this.zoomHistory;
+ 
+-    _makeQueryGeometry: function(pointOrBox) {
+-        if (pointOrBox === undefined) {
+-            // bounds was omitted: use full viewport
+-            pointOrBox = [
+-                Point.convert([0, 0]),
+-                Point.convert([this.transform.width, this.transform.height])
+-            ];
++        if (zh.lastIntegerZoom === undefined) {
++            // first time
++            zh.lastIntegerZoom = Math.floor(z);
++            zh.lastIntegerZoomTime = 0;
++            zh.lastZoom = z;
+         }
+ 
+-        var queryGeometry;
+-        var isPoint = pointOrBox instanceof Point || typeof pointOrBox[0] === 'number';
++        // check whether an integer zoom level as passed since the last frame
++        // and if yes, record it with the time. Used for transitioning patterns.
++        if (Math.floor(zh.lastZoom) < Math.floor(z)) {
++            zh.lastIntegerZoom = Math.floor(z);
++            zh.lastIntegerZoomTime = Date.now();
+ 
+-        if (isPoint) {
+-            var point = Point.convert(pointOrBox);
+-            queryGeometry = [point];
+-        } else {
+-            var box = [Point.convert(pointOrBox[0]), Point.convert(pointOrBox[1])];
+-            queryGeometry = [
+-                box[0],
+-                new Point(box[1].x, box[0].y),
+-                box[1],
+-                new Point(box[0].x, box[1].y),
+-                box[0]
+-            ];
++        } else if (Math.floor(zh.lastZoom) > Math.floor(z)) {
++            zh.lastIntegerZoom = Math.floor(z + 1);
++            zh.lastIntegerZoomTime = Date.now();
+         }
+ 
+-        queryGeometry = queryGeometry.map(function(p) {
+-            return this.transform.pointCoordinate(p);
+-        }.bind(this));
+-
+-        return queryGeometry;
++        zh.lastZoom = z;
+     },
+ 
+-    /**
+-     * Get data from vector tiles as an array of GeoJSON Features.
+-     *
+-     * @param {string} sourceID source ID
+-     * @param {Object} params
+-     * @param {string} [params.sourceLayer] The name of the vector tile layer to get features from.
+-     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
+-     *
+-     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features matching the query parameters. The GeoJSON properties of each feature are taken from the original source. Each feature object also contains a top-level `layer` property whose value is an object representing the style layer to which the feature belongs. Layout and paint properties in this object contain values which are fully evaluated for the given zoom level and feature.
+-     */
+-    querySourceFeatures: function(sourceID, params) {
+-        return this.style.querySourceFeatures(sourceID, params);
++    _checkLoaded: function () {
++        if (!this._loaded) {
++            throw new Error('Style is not done loading');
++        }
+     },
+ 
+     /**
+-     * Replaces the map's style object with a new value. Unlike the `style`
+-     * option in the Map constructor, this method only accepts an object
+-     * of a new style, not a URL string.
+-     *
+-     * @param {Object} style A style object formatted as JSON
+-     * @returns {Map} `this`
++     * Apply queued style updates in a batch
++     * @private
+      */
+-    setStyle: function(style) {
+-        if (this.style) {
+-            this.style
+-                .off('load', this._onStyleLoad)
+-                .off('error', this._forwardStyleEvent)
+-                .off('change', this._onStyleChange)
+-                .off('source.add', this._onSourceAdd)
+-                .off('source.remove', this._onSourceRemove)
+-                .off('source.load', this._onSourceUpdate)
+-                .off('source.error', this._forwardSourceEvent)
+-                .off('source.change', this._onSourceUpdate)
+-                .off('layer.add', this._forwardLayerEvent)
+-                .off('layer.remove', this._forwardLayerEvent)
+-                .off('layer.error', this._forwardLayerEvent)
+-                .off('tile.add', this._forwardTileEvent)
+-                .off('tile.remove', this._forwardTileEvent)
+-                .off('tile.load', this._update)
+-                .off('tile.error', this._forwardTileEvent)
+-                .off('tile.stats', this._forwardTileEvent)
+-                ._remove();
++    update: function(classes, options) {
++        if (!this._updates.changed) return this;
+ 
+-            this.off('rotate', this.style._redoPlacement);
+-            this.off('pitch', this.style._redoPlacement);
++        if (this._updates.allLayers) {
++            this._groupLayers();
++            this._updateWorkerLayers();
++        } else {
++            var updatedIds = Object.keys(this._updates.layers);
++            if (updatedIds.length) {
++                this._updateWorkerLayers(updatedIds);
++            }
+         }
+ 
+-        if (!style) {
+-            this.style = null;
+-            return this;
+-        } else if (style instanceof Style) {
+-            this.style = style;
+-        } else {
+-            this.style = new Style(style, this.animationLoop);
++        var updatedSourceIds = Object.keys(this._updates.sources);
++        var i;
++        for (i = 0; i < updatedSourceIds.length; i++) {
++            this._reloadSource(updatedSourceIds[i]);
+         }
+ 
+-        this.style
+-            .on('load', this._onStyleLoad)
+-            .on('error', this._forwardStyleEvent)
+-            .on('change', this._onStyleChange)
+-            .on('source.add', this._onSourceAdd)
+-            .on('source.remove', this._onSourceRemove)
+-            .on('source.load', this._onSourceUpdate)
+-            .on('source.error', this._forwardSourceEvent)
+-            .on('source.change', this._onSourceUpdate)
+-            .on('layer.add', this._forwardLayerEvent)
+-            .on('layer.remove', this._forwardLayerEvent)
+-            .on('layer.error', this._forwardLayerEvent)
+-            .on('tile.add', this._forwardTileEvent)
+-            .on('tile.remove', this._forwardTileEvent)
+-            .on('tile.load', this._update)
+-            .on('tile.error', this._forwardTileEvent)
+-            .on('tile.stats', this._forwardTileEvent);
++        for (i = 0; i < this._updates.events.length; i++) {
++            var args = this._updates.events[i];
++            this.fire(args[0], args[1]);
++        }
+ 
+-        this.on('rotate', this.style._redoPlacement);
+-        this.on('pitch', this.style._redoPlacement);
++        this._applyClasses(classes, options);
++
++        if (this._updates.changed) {
++            this.fire('change');
++        }
++
++        this._resetUpdates();
+ 
+         return this;
+     },
+ 
+-    /**
+-     * Get a style object that can be used to recreate the map's style.
+-     *
+-     * @returns {Object} style
+-     */
+-    getStyle: function() {
+-        return this.style.serialize();
++    _resetUpdates: function() {
++        this._updates = {
++            events: [],
++            layers: {},
++            sources: {},
++            paintProps: {}
++        };
+     },
+ 
+-    /**
+-     * Add a source to the map style.
+-     *
+-     * @param {string} id ID of the source. Must not be used by any existing source.
+-     * @param {Object} source source specification, following the
+-     * [Mapbox GL Style Reference](https://www.mapbox.com/mapbox-gl-style-spec/#sources)
+-     * @fires source.add
+-     * @returns {Map} `this`
+-     */
+-    addSource: function(id, source) {
+-        this.style.addSource(id, source);
+-        this._update(true);
++    addSource: function(id, source) {
++        this._checkLoaded();
++        if (this.sources[id] !== undefined) {
++            throw new Error('There is already a source with this ID');
++        }
++        if (!Source.is(source) && this._handleErrors(validateStyle.source, 'sources.' + id, source)) return this;
++
++        source = Source.create(source);
++        this.sources[id] = source;
++        source.id = id;
++        source.style = this;
++        source.dispatcher = this.dispatcher;
++        source
++            .on('load', this._forwardSourceEvent)
++            .on('error', this._forwardSourceEvent)
++            .on('change', this._forwardSourceEvent)
++            .on('tile.add', this._forwardTileEvent)
++            .on('tile.load', this._forwardTileEvent)
++            .on('tile.error', this._forwardTileEvent)
++            .on('tile.remove', this._forwardTileEvent)
++            .on('tile.stats', this._forwardTileEvent);
++
++        this._updates.events.push(['source.add', {source: source}]);
++        this._updates.changed = true;
++
+         return this;
+     },
+ 
+     /**
+-     * Remove an existing source from the map style.
+-     *
+-     * @param {string} id ID of the source to remove
+-     * @fires source.remove
+-     * @returns {Map} `this`
++     * Remove a source from this stylesheet, given its id.
++     * @param {string} id id of the source to remove
++     * @returns {Style} this style
++     * @throws {Error} if no source is found with the given ID
++     * @private
+      */
+     removeSource: function(id) {
+-        this.style.removeSource(id);
+-        this._update(true);
++        this._checkLoaded();
++
++        if (this.sources[id] === undefined) {
++            throw new Error('There is no source with this ID');
++        }
++        var source = this.sources[id];
++        delete this.sources[id];
++        source
++            .off('load', this._forwardSourceEvent)
++            .off('error', this._forwardSourceEvent)
++            .off('change', this._forwardSourceEvent)
++            .off('tile.add', this._forwardTileEvent)
++            .off('tile.load', this._forwardTileEvent)
++            .off('tile.error', this._forwardTileEvent)
++            .off('tile.remove', this._forwardTileEvent)
++            .off('tile.stats', this._forwardTileEvent);
++
++        this._updates.events.push(['source.remove', {source: source}]);
++        this._updates.changed = true;
++
+         return this;
+     },
+ 
+     /**
+-     * Return the style source object with the given `id`.
+-     *
+-     * @param {string} id source ID
+-     * @returns {Object}
++     * Get a source by id.
++     * @param {string} id id of the desired source
++     * @returns {Object} source
++     * @private
+      */
+     getSource: function(id) {
+-        return this.style.getSource(id);
++        return this.sources[id];
+     },
+ 
+     /**
+@@ -57214,18498 +58794,18337 @@ util.extend(Map.prototype, /** @lends Map.prototype */{
+      * @param {StyleLayer|Object} layer
+      * @param {string=} before  ID of an existing layer to insert before
+      * @fires layer.add
+-     * @returns {Map} `this`
++     * @returns {Style} `this`
++     * @private
+      */
+     addLayer: function(layer, before) {
+-        this.style.addLayer(layer, before);
+-        this._update(true);
+-        return this;
++        this._checkLoaded();
++
++        if (!(layer instanceof StyleLayer)) {
++            // this layer is not in the style.layers array, so we pass an impossible array index
++            if (this._handleErrors(validateStyle.layer,
++                    'layers.' + layer.id, layer, false, {arrayIndex: -1})) return this;
++
++            var refLayer = layer.ref && this.getLayer(layer.ref);
++            layer = StyleLayer.create(layer, refLayer);
++        }
++        this._validateLayer(layer);
++
++        layer.on('error', this._forwardLayerEvent);
++
++        this._layers[layer.id] = layer;
++        this._order.splice(before ? this._order.indexOf(before) : Infinity, 0, layer.id);
++
++        this._updates.allLayers = true;
++        if (layer.source) {
++            this._updates.sources[layer.source] = true;
++        }
++        this._updates.events.push(['layer.add', {layer: layer}]);
++
++        return this.updateClasses(layer.id);
+     },
+ 
+     /**
+-     * Remove the layer with the given `id` from the map. Any layers which refer to the
+-     * specified layer via a `ref` property are also removed.
+-     *
+-     * @param {string} id layer id
+-     * @throws {Error} if no layer with the given `id` exists
+-     * @fires layer.remove
+-     * @returns {Map} `this`
++     * Remove a layer from this stylesheet, given its id.
++     * @param {string} id id of the layer to remove
++     * @returns {Style} this style
++     * @throws {Error} if no layer is found with the given ID
++     * @private
+      */
+     removeLayer: function(id) {
+-        this.style.removeLayer(id);
+-        this._update(true);
++        this._checkLoaded();
++
++        var layer = this._layers[id];
++        if (layer === undefined) {
++            throw new Error('There is no layer with this ID');
++        }
++        for (var i in this._layers) {
++            if (this._layers[i].ref === id) {
++                this.removeLayer(i);
++            }
++        }
++
++        layer.off('error', this._forwardLayerEvent);
++
++        delete this._layers[id];
++        this._order.splice(this._order.indexOf(id), 1);
++
++        this._updates.allLayers = true;
++        this._updates.events.push(['layer.remove', {layer: layer}]);
++        this._updates.changed = true;
++
+         return this;
+     },
+ 
+     /**
+      * Return the style layer object with the given `id`.
+      *
+-     * @param {string} id layer id
++     * @param {string} id - id of the desired layer
+      * @returns {?Object} a layer, if one with the given `id` exists
++     * @private
+      */
+     getLayer: function(id) {
+-        return this.style.getLayer(id);
++        return this._layers[id];
+     },
+ 
+     /**
+-     * Set the filter for a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {Array} filter filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#types-filter)
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setFilter('my-layer', ['==', 'name', 'USA']);
++     * If a layer has a `ref` property that makes it derive some values
++     * from another layer, return that referent layer. Otherwise,
++     * returns the layer itself.
++     * @param {string} id the layer's id
++     * @returns {Layer} the referent layer or the layer itself
++     * @private
+      */
+-    setFilter: function(layer, filter) {
+-        this.style.setFilter(layer, filter);
+-        this._update(true);
+-        return this;
++    getReferentLayer: function(id) {
++        var layer = this.getLayer(id);
++        if (layer.ref) {
++            layer = this.getLayer(layer.ref);
++        }
++        return layer;
+     },
+ 
+-    /**
+-     * Set the zoom extent for a given style layer.
+-     *
+-     * @param {string} layerId ID of a layer
+-     * @param {number} minzoom minimum zoom extent
+-     * @param {number} maxzoom maximum zoom extent
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setLayerZoomRange('my-layer', 2, 5);
+-     */
+     setLayerZoomRange: function(layerId, minzoom, maxzoom) {
+-        this.style.setLayerZoomRange(layerId, minzoom, maxzoom);
+-        this._update(true);
+-        return this;
+-    },
++        this._checkLoaded();
+ 
+-    /**
+-     * Get the filter for a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @returns {Array} filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#filter)
+-     */
+-    getFilter: function(layer) {
+-        return this.style.getFilter(layer);
+-    },
++        var layer = this.getReferentLayer(layerId);
+ 
+-    /**
+-     * Set the value of a paint property in a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a paint property
+-     * @param {*} value value for the paint propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
+-     * @param {string=} klass optional class specifier for the property
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setPaintProperty('my-layer', 'fill-color', '#faafee');
+-     */
+-    setPaintProperty: function(layer, name, value, klass) {
+-        this.style.setPaintProperty(layer, name, value, klass);
+-        this._update(true);
+-        return this;
+-    },
++        if (layer.minzoom === minzoom && layer.maxzoom === maxzoom) return this;
+ 
+-    /**
+-     * Get the value of a paint property in a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a paint property
+-     * @param {string=} klass optional class specifier for the property
+-     * @returns {*} value for the paint propery
+-     */
+-    getPaintProperty: function(layer, name, klass) {
+-        return this.style.getPaintProperty(layer, name, klass);
++        if (minzoom != null) {
++            layer.minzoom = minzoom;
++        }
++        if (maxzoom != null) {
++            layer.maxzoom = maxzoom;
++        }
++        return this._updateLayer(layer);
+     },
+ 
+-    /**
+-     * Set the value of a layout property in a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a layout property
+-     * @param {*} value value for the layout propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
+-     * @returns {Map} `this`
+-     * @example
+-     * map.setLayoutProperty('my-layer', 'visibility', 'none');
+-     */
+-    setLayoutProperty: function(layer, name, value) {
+-        this.style.setLayoutProperty(layer, name, value);
+-        this._update(true);
+-        return this;
+-    },
++    setFilter: function(layerId, filter) {
++        this._checkLoaded();
+ 
+-    /**
+-     * Get the value of a layout property in a given style layer.
+-     *
+-     * @param {string} layer ID of a layer
+-     * @param {string} name name of a layout property
+-     * @param {string=} klass optional class specifier for the property
+-     * @returns {*} value for the layout propery
+-     */
+-    getLayoutProperty: function(layer, name) {
+-        return this.style.getLayoutProperty(layer, name);
++        var layer = this.getReferentLayer(layerId);
++
++        if (this._handleErrors(validateStyle.filter, 'layers.' + layer.id + '.filter', filter)) return this;
++
++        if (util.deepEqual(layer.filter, filter)) return this;
++        layer.filter = util.clone(filter);
++
++        return this._updateLayer(layer);
+     },
+ 
+     /**
+-     * Get the Map's container as an HTML element
+-     * @returns {HTMLElement} container
++     * Get a layer's filter object
++     * @param {string} layer the layer to inspect
++     * @returns {*} the layer's filter, if any
++     * @private
+      */
+-    getContainer: function() {
+-        return this._container;
++    getFilter: function(layer) {
++        return this.getReferentLayer(layer).filter;
+     },
+ 
+-    /**
+-     * Get the container for the map `canvas` element.
+-     *
+-     * If you want to add non-GL overlays to the map, you should append them to this element. This
+-     * is the element to which event bindings for map interactivity such as panning and zooming are
+-     * attached. It will receive bubbled events for child elements such as the `canvas`, but not for
+-     * map controls.
+-     *
+-     * @returns {HTMLElement} container
+-     */
+-    getCanvasContainer: function() {
+-        return this._canvasContainer;
++    setLayoutProperty: function(layerId, name, value) {
++        this._checkLoaded();
++
++        var layer = this.getReferentLayer(layerId);
++
++        if (util.deepEqual(layer.getLayoutProperty(name), value)) return this;
++
++        layer.setLayoutProperty(name, value);
++        return this._updateLayer(layer);
+     },
+ 
+     /**
+-     * Get the Map's canvas as an HTML canvas
+-     * @returns {HTMLElement} canvas
++     * Get a layout property's value from a given layer
++     * @param {string} layer the layer to inspect
++     * @param {string} name the name of the layout property
++     * @returns {*} the property value
++     * @private
+      */
+-    getCanvas: function() {
+-        return this._canvas.getElement();
++    getLayoutProperty: function(layer, name) {
++        return this.getReferentLayer(layer).getLayoutProperty(name);
+     },
+ 
+-    _setupContainer: function() {
+-        var container = this._container;
+-        container.classList.add('mapboxgl-map');
++    setPaintProperty: function(layerId, name, value, klass) {
++        this._checkLoaded();
+ 
+-        var canvasContainer = this._canvasContainer = DOM.create('div', 'mapboxgl-canvas-container', container);
+-        if (this._interactive) {
+-            canvasContainer.classList.add('mapboxgl-interactive');
+-        }
+-        this._canvas = new Canvas(this, canvasContainer);
++        var layer = this.getLayer(layerId);
+ 
+-        var controlContainer = this._controlContainer = DOM.create('div', 'mapboxgl-control-container', container);
+-        var corners = this._controlCorners = {};
+-        ['top-left', 'top-right', 'bottom-left', 'bottom-right'].forEach(function (pos) {
+-            corners[pos] = DOM.create('div', 'mapboxgl-ctrl-' + pos, controlContainer);
+-        });
+-    },
++        if (util.deepEqual(layer.getPaintProperty(name, klass), value)) return this;
+ 
+-    _setupPainter: function() {
+-        var gl = this._canvas.getWebGLContext({
+-            failIfMajorPerformanceCaveat: this._failIfMajorPerformanceCaveat,
+-            preserveDrawingBuffer: this._preserveDrawingBuffer
+-        });
++        var wasFeatureConstant = layer.isPaintValueFeatureConstant(name);
++        layer.setPaintProperty(name, value, klass);
+ 
+-        if (!gl) {
+-            console.error('Failed to initialize WebGL');
+-            return;
++        var isFeatureConstant = !(StyleFunction.isFunctionDefinition(value) && value.property !== '$zoom' && value.property !== undefined);
++
++        if (!isFeatureConstant || !wasFeatureConstant) {
++            this._updates.layers[layerId] = true;
++            if (layer.source) {
++                this._updates.sources[layer.source] = true;
++            }
+         }
+ 
+-        this.painter = new Painter(gl, this.transform);
++        return this.updateClasses(layerId, name);
+     },
+ 
+-    /**
+-     * WebGL Context Lost event.
+-     *
+-     * @event webglcontextlost
+-     * @memberof Map
+-     * @instance
+-     * @type {Object}
+-     * @property {Event} originalEvent the original DOM event
+-     */
+-    _contextLost: function(event) {
+-        event.preventDefault();
+-        if (this._frameId) {
+-            browser.cancelFrame(this._frameId);
+-        }
+-        this.fire("webglcontextlost", {originalEvent: event});
++    getPaintProperty: function(layer, name, klass) {
++        return this.getLayer(layer).getPaintProperty(name, klass);
+     },
+ 
+-    /**
+-     * WebGL Context Restored event.
+-     *
+-     * @event webglcontextrestored
+-     * @memberof Map
+-     * @instance
+-     * @type {Object}
+-     */
+-    _contextRestored: function(event) {
+-        this._setupPainter();
+-        this.resize();
+-        this._update();
+-        this.fire("webglcontextrestored", {originalEvent: event});
++    updateClasses: function (layerId, paintName) {
++        this._updates.changed = true;
++        if (!layerId) {
++            this._updates.allPaintProps = true;
++        } else {
++            var props = this._updates.paintProps;
++            if (!props[layerId]) props[layerId] = {};
++            props[layerId][paintName || 'all'] = true;
++        }
++        return this;
+     },
+ 
+-    /**
+-     * Is this map fully loaded? If the style isn't loaded
+-     * or it has a change to the sources or style that isn't
+-     * propagated to its style, return false.
+-     *
+-     * @returns {boolean} whether the map is loaded
+-     */
+-    loaded: function() {
+-        if (this._styleDirty || this._sourcesDirty)
+-            return false;
+-        if (!this.style || !this.style.loaded())
+-            return false;
+-        return true;
++    serialize: function() {
++        return util.filterObject({
++            version: this.stylesheet.version,
++            name: this.stylesheet.name,
++            metadata: this.stylesheet.metadata,
++            center: this.stylesheet.center,
++            zoom: this.stylesheet.zoom,
++            bearing: this.stylesheet.bearing,
++            pitch: this.stylesheet.pitch,
++            sprite: this.stylesheet.sprite,
++            glyphs: this.stylesheet.glyphs,
++            transition: this.stylesheet.transition,
++            sources: util.mapObject(this.sources, function(source) {
++                return source.serialize();
++            }),
++            layers: this._order.map(function(id) {
++                return this._layers[id].serialize();
++            }, this)
++        }, function(value) { return value !== undefined; });
+     },
+ 
+-    /**
+-     * Update this map's style and sources, and re-render the map.
+-     *
+-     * @param {boolean} updateStyle mark the map's style for reprocessing as
+-     * well as its sources
+-     * @returns {Map} this
+-     * @private
+-     */
+-    _update: function(updateStyle) {
+-        if (!this.style) return this;
+-
+-        this._styleDirty = this._styleDirty || updateStyle;
+-        this._sourcesDirty = true;
+-
+-        this._rerender();
+-
++    _updateLayer: function (layer) {
++        this._updates.layers[layer.id] = true;
++        if (layer.source) {
++            this._updates.sources[layer.source] = true;
++        }
++        this._updates.changed = true;
+         return this;
+     },
+ 
+-    /**
+-     * Call when a (re-)render of the map is required, e.g. when the
+-     * user panned or zoomed,f or new data is available.
+-     * @returns {Map} this
+-     * @private
+-     */
+-    _render: function() {
+-        if (this.style && this._styleDirty) {
+-            this._styleDirty = false;
+-            this.style.update(this._classes, this._classOptions);
+-            this._classOptions = null;
+-            this.style._recalculate(this.transform.zoom);
+-        }
+-
+-        if (this.style && this._sourcesDirty) {
+-            this._sourcesDirty = false;
+-            this.style._updateSources(this.transform);
++    _flattenRenderedFeatures: function(sourceResults) {
++        var features = [];
++        for (var l = this._order.length - 1; l >= 0; l--) {
++            var layerID = this._order[l];
++            for (var s = 0; s < sourceResults.length; s++) {
++                var layerFeatures = sourceResults[s][layerID];
++                if (layerFeatures) {
++                    for (var f = 0; f < layerFeatures.length; f++) {
++                        features.push(layerFeatures[f]);
++                    }
++                }
++            }
+         }
++        return features;
++    },
+ 
+-        this.painter.render(this.style, {
+-            debug: this.showTileBoundaries,
+-            showOverdrawInspector: this._showOverdrawInspector,
+-            vertices: this.vertices,
+-            rotating: this.rotating,
+-            zooming: this.zooming
+-        });
+-
+-        this.fire('render');
+-
+-        if (this.loaded() && !this._loaded) {
+-            this._loaded = true;
+-            this.fire('load');
++    queryRenderedFeatures: function(queryGeometry, params, zoom, bearing) {
++        if (params && params.filter) {
++            this._handleErrors(validateStyle.filter, 'queryRenderedFeatures.filter', params.filter, true);
+         }
+ 
+-        this._frameId = null;
+-
+-        if (!this.animationLoop.stopped()) {
+-            this._styleDirty = true;
++        var sourceResults = [];
++        for (var id in this.sources) {
++            var source = this.sources[id];
++            if (source.queryRenderedFeatures) {
++                sourceResults.push(source.queryRenderedFeatures(queryGeometry, params, zoom, bearing));
++            }
+         }
++        return this._flattenRenderedFeatures(sourceResults);
++    },
+ 
+-        if (this._sourcesDirty || this._repaint || !this.animationLoop.stopped()) {
+-            this._rerender();
++    querySourceFeatures: function(sourceID, params) {
++        if (params && params.filter) {
++            this._handleErrors(validateStyle.filter, 'querySourceFeatures.filter', params.filter, true);
+         }
++        var source = this.getSource(sourceID);
++        return source && source.querySourceFeatures ? source.querySourceFeatures(params) : [];
++    },
+ 
+-        return this;
++    _handleErrors: function(validate, key, value, throws, props) {
++        var action = throws ? validateStyle.throwErrors : validateStyle.emitErrors;
++        var result = validate.call(validateStyle, util.extend({
++            key: key,
++            style: this.serialize(),
++            value: value,
++            styleSpec: styleSpec
++        }, props));
++        return action.call(validateStyle, this, result);
+     },
+ 
+-    /**
+-     * Destroys the map's underlying resources, including web workers and DOM elements. Afterwards,
+-     * you must not call any further methods on this Map instance.
+-     *
+-     * @returns {undefined}
+-     */
+-    remove: function() {
+-        if (this._hash) this._hash.remove();
+-        browser.cancelFrame(this._frameId);
+-        this.setStyle(null);
+-        if (typeof window !== 'undefined') {
+-            window.removeEventListener('resize', this._onWindowResize, false);
+-        }
+-        removeNode(this._canvasContainer);
+-        removeNode(this._controlContainer);
+-        this._container.classList.remove('mapboxgl-map');
++    _remove: function() {
++        this.dispatcher.remove();
+     },
+ 
+-    /**
+-     * A default error handler for `style.error`, `source.error`, `layer.error`,
+-     * and `tile.error` events.
+-     * It logs the error via `console.error`.
+-     *
+-     * @example
+-     * // Disable the default error handler
+-     * map.off('style.error', map.onError);
+-     * map.off('source.error', map.onError);
+-     * map.off('tile.error', map.onError);
+-     * map.off('layer.error', map.onError);
+-     */
+-    onError: function(e) {
+-        console.error(e.error);
++    _reloadSource: function(id) {
++        this.sources[id].reload();
+     },
+ 
+-    _rerender: function() {
+-        if (this.style && !this._frameId) {
+-            this._frameId = browser.frame(this._render);
++    _updateSources: function(transform) {
++        for (var id in this.sources) {
++            this.sources[id].update(transform);
+         }
+     },
+ 
+-    _forwardStyleEvent: function(e) {
+-        this.fire('style.' + e.type, util.extend({style: e.target}, e));
++    _redoPlacement: function() {
++        for (var id in this.sources) {
++            if (this.sources[id].redoPlacement) this.sources[id].redoPlacement();
++        }
+     },
+ 
+     _forwardSourceEvent: function(e) {
+-        this.fire(e.type, util.extend({style: e.target}, e));
++        this.fire('source.' + e.type, util.extend({source: e.target}, e));
+     },
+ 
+-    _forwardLayerEvent: function(e) {
+-        this.fire(e.type, util.extend({style: e.target}, e));
++    _forwardTileEvent: function(e) {
++        this.fire(e.type, util.extend({source: e.target}, e));
+     },
+ 
+-    _forwardTileEvent: function(e) {
+-        this.fire(e.type, util.extend({style: e.target}, e));
++    _forwardLayerEvent: function(e) {
++        this.fire('layer.' + e.type, util.extend({layer: {id: e.target.id}}, e));
+     },
+ 
+-    _onStyleLoad: function(e) {
+-        if (this.transform.unmodified) {
+-            this.jumpTo(this.style.stylesheet);
++    // Callbacks from web workers
++
++    'get sprite json': function(params, callback) {
++        var sprite = this.sprite;
++        if (sprite.loaded()) {
++            callback(null, { sprite: sprite.data, retina: sprite.retina });
++        } else {
++            sprite.on('load', function() {
++                callback(null, { sprite: sprite.data, retina: sprite.retina });
++            });
+         }
+-        this.style.update(this._classes, {transition: false});
+-        this._forwardStyleEvent(e);
+     },
+ 
+-    _onStyleChange: function(e) {
+-        this._update(true);
+-        this._forwardStyleEvent(e);
++    'get icons': function(params, callback) {
++        var sprite = this.sprite;
++        var spriteAtlas = this.spriteAtlas;
++        if (sprite.loaded()) {
++            spriteAtlas.setSprite(sprite);
++            spriteAtlas.addIcons(params.icons, callback);
++        } else {
++            sprite.on('load', function() {
++                spriteAtlas.setSprite(sprite);
++                spriteAtlas.addIcons(params.icons, callback);
++            });
++        }
+     },
+ 
+-    _onSourceAdd: function(e) {
+-        var source = e.source;
+-        if (source.onAdd)
+-            source.onAdd(this);
+-        this._forwardSourceEvent(e);
+-    },
++    'get glyphs': function(params, callback) {
++        var stacks = params.stacks,
++            remaining = Object.keys(stacks).length,
++            allGlyphs = {};
+ 
+-    _onSourceRemove: function(e) {
+-        var source = e.source;
+-        if (source.onRemove)
+-            source.onRemove(this);
+-        this._forwardSourceEvent(e);
+-    },
++        for (var fontName in stacks) {
++            this.glyphSource.getSimpleGlyphs(fontName, stacks[fontName], params.uid, done);
++        }
+ 
+-    _onSourceUpdate: function(e) {
+-        this._update();
+-        this._forwardSourceEvent(e);
+-    },
++        function done(err, glyphs, fontName) {
++            if (err) console.error(err);
+ 
+-    _onWindowResize: function() {
+-        this.stop().resize()._update();
++            allGlyphs[fontName] = glyphs;
++            remaining--;
++
++            if (remaining === 0)
++                callback(null, allGlyphs);
++        }
+     }
+ });
+ 
+-util.extendAll(Map.prototype, /** @lends Map.prototype */{
++},{"../render/line_atlas":283,"../source/source":292,"../symbol/glyph_source":324,"../symbol/sprite_atlas":329,"../util/ajax":347,"../util/browser":348,"../util/dispatcher":350,"../util/evented":354,"../util/mapbox":359,"../util/util":362,"./animation_loop":300,"./image_sprite":301,"./style_function":305,"./style_layer":306,"./style_spec":313,"./validate_style":315}],304:[function(require,module,exports){
++'use strict';
+ 
+-    /**
+-     * Draw an outline around each rendered tile for debugging.
+-     *
+-     * @name showTileBoundaries
+-     * @type {boolean}
+-     */
+-    _showTileBoundaries: false,
+-    get showTileBoundaries() { return this._showTileBoundaries; },
+-    set showTileBoundaries(value) {
+-        if (this._showTileBoundaries === value) return;
+-        this._showTileBoundaries = value;
+-        this._update();
+-    },
++var MapboxGLFunction = require('./style_function');
++var parseColor = require('./parse_color');
++var util = require('../util/util');
+ 
+-    /**
+-     * Draw boxes around all symbols in the data source, showing which were
+-     * rendered and which were hidden due to collisions with other symbols for
+-     * style debugging.
+-     *
+-     * @name showCollisionBoxes
+-     * @type {boolean}
+-     */
+-    _showCollisionBoxes: false,
+-    get showCollisionBoxes() { return this._showCollisionBoxes; },
+-    set showCollisionBoxes(value) {
+-        if (this._showCollisionBoxes === value) return;
+-        this._showCollisionBoxes = value;
+-        this.style._redoPlacement();
+-    },
++module.exports = StyleDeclaration;
+ 
+-    /*
+-     * Show how many times each fragment has been shaded. White fragments have
+-     * been shaded 8 or more times. Black fragments have been shaded 0 times.
+-     *
+-     * @name showOverdraw
+-     * @type {boolean}
+-     */
+-    _showOverdrawInspector: false,
+-    get showOverdrawInspector() { return this._showOverdrawInspector; },
+-    set showOverdrawInspector(value) {
+-        if (this._showOverdrawInspector === value) return;
+-        this._showOverdrawInspector = value;
+-        this._update();
+-    },
++function StyleDeclaration(reference, value) {
++    this.type = reference.type;
++    this.transitionable = reference.transition;
++    this.value = util.clone(value);
++    this.isFunction = !!value.stops;
+ 
+-    /**
+-     * Enable continuous repaint to analyze performance.
+-     *
+-     * @name repaint
+-     * @type {boolean}
+-     */
+-    _repaint: false,
+-    get repaint() { return this._repaint; },
+-    set repaint(value) { this._repaint = value; this._update(); },
++    // immutable representation of value. used for comparison
++    this.json = JSON.stringify(this.value);
+ 
+-    // show vertices
+-    _vertices: false,
+-    get vertices() { return this._vertices; },
+-    set vertices(value) { this._vertices = value; this._update(); }
+-});
++    var parsedValue = this.type === 'color' ? parseColor(this.value) : value;
++    this.calculate = MapboxGLFunction[reference.function || 'piecewise-constant'](parsedValue);
++    this.isFeatureConstant = this.calculate.isFeatureConstant;
++    this.isZoomConstant = this.calculate.isZoomConstant;
+ 
+-function removeNode(node) {
+-    if (node.parentNode) {
+-        node.parentNode.removeChild(node);
++    if (reference.function === 'piecewise-constant' && reference.transition) {
++        this.calculate = transitioned(this.calculate);
++    }
++
++    if (!this.isFeatureConstant && !this.isZoomConstant) {
++        this.stopZoomLevels = [];
++        var interpolationAmountStops = [];
++        var stops = this.value.stops;
++        for (var i = 0; i < this.value.stops.length; i++) {
++            var zoom = stops[i][0].zoom;
++            if (this.stopZoomLevels.indexOf(zoom) < 0) {
++                this.stopZoomLevels.push(zoom);
++                interpolationAmountStops.push([zoom, interpolationAmountStops.length]);
++            }
++        }
++
++        this.calculateInterpolationT = MapboxGLFunction.interpolated({
++            stops: interpolationAmountStops,
++            base: value.base
++        });
+     }
+ }
+ 
+-/**
+- * Options common to Map#addClass, Map#removeClass, and Map#setClasses, controlling
+- * whether or not to smoothly transition property changes triggered by the class change.
+- *
+- * @typedef {Object} StyleOptions
+- * @property {boolean} transition
+- */
++function transitioned(calculate) {
++    return function(globalProperties, featureProperties) {
++        var z = globalProperties.zoom;
++        var zh = globalProperties.zoomHistory;
++        var duration = globalProperties.duration;
+ 
+- /**
+-  * This event is fired whenever the map is drawn to the screen because of
+-  *
+-  *  - a change in map position, zoom, pitch, or bearing
+-  *  - a change to the map style
+-  *  - a change to a GeoJSON source
+-  *  - a vector tile, GeoJSON file, glyph, or sprite being loaded
+-  *
+-  * @event render
+-  * @memberof Map
+-  * @instance
+-  */
++        var fraction = z % 1;
++        var t = Math.min((Date.now() - zh.lastIntegerZoomTime) / duration, 1);
++        var fromScale = 1;
++        var toScale = 1;
++        var mix, from, to;
++
++        if (z > zh.lastIntegerZoom) {
++            mix = fraction + (1 - fraction) * t;
++            fromScale *= 2;
++            from = calculate({zoom: z - 1}, featureProperties);
++            to = calculate({zoom: z}, featureProperties);
++        } else {
++            mix = 1 - (1 - t) * fraction;
++            to = calculate({zoom: z}, featureProperties);
++            from = calculate({zoom: z + 1}, featureProperties);
++            fromScale /= 2;
++        }
++
++        return {
++            from: from,
++            fromScale: fromScale,
++            to: to,
++            toScale: toScale,
++            t: mix
++        };
++    };
++}
+ 
+-},{"../geo/lng_lat":256,"../geo/lng_lat_bounds":257,"../geo/transform":258,"../render/painter":271,"../style/animation_loop":287,"../style/style":290,"../util/browser":335,"../util/canvas":336,"../util/dom":338,"../util/evented":341,"../util/util":349,"./camera":317,"./control/attribution":318,"./hash":329,"./interaction":330,"point-geometry":404}],332:[function(require,module,exports){
++},{"../util/util":362,"./parse_color":302,"./style_function":305}],305:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = Popup;
++var MapboxGLFunction = require('mapbox-gl-function');
++
++exports.interpolated = function(parameters) {
++    var inner = MapboxGLFunction.interpolated(parameters);
++    var outer = function(globalProperties, featureProperties) {
++        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
++    };
++    outer.isFeatureConstant = inner.isFeatureConstant;
++    outer.isZoomConstant = inner.isZoomConstant;
++    return outer;
++};
++
++exports['piecewise-constant'] = function(parameters) {
++    var inner = MapboxGLFunction['piecewise-constant'](parameters);
++    var outer = function(globalProperties, featureProperties) {
++        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
++    };
++    outer.isFeatureConstant = inner.isFeatureConstant;
++    outer.isZoomConstant = inner.isZoomConstant;
++    return outer;
++};
++
++exports.isFunctionDefinition = MapboxGLFunction.isFunctionDefinition;
++
++},{"mapbox-gl-function":233}],306:[function(require,module,exports){
++'use strict';
+ 
+ var util = require('../util/util');
++var StyleTransition = require('./style_transition');
++var StyleDeclaration = require('./style_declaration');
++var styleSpec = require('./style_spec');
++var validateStyle = require('./validate_style');
++var parseColor = require('./parse_color');
+ var Evented = require('../util/evented');
+-var DOM = require('../util/dom');
+-var LngLat = require('../geo/lng_lat');
+ 
+-/**
+- * Creates a popup component
+- * @class Popup
+- * @param {Object} options
+- * @param {boolean} options.closeButton whether to show a close button in the
+- * top right corner of the popup.
+- * @param {boolean} options.closeOnClick whether to close the popup when the
+- * map is clicked.
+- * @param {string} options.anchor - One of "top", "bottom", "left", "right", "top-left",
+- * "top-right", "bottom-left", or "bottom-right", describing where the popup's anchor
+- * relative to the coordinate set via `setLngLat`.
+- * @example
+- * var tooltip = new mapboxgl.Popup()
+- *   .setLngLat(e.lngLat)
+- *   .setHTML("<h1>Hello World!</h1>")
+- *   .addTo(map);
+- */
+-function Popup(options) {
+-    util.setOptions(this, options);
+-    util.bindAll([
+-        '_update',
+-        '_onClickClose'],
+-        this);
++module.exports = StyleLayer;
++
++var TRANSITION_SUFFIX = '-transition';
++
++StyleLayer.create = function(layer, refLayer) {
++    var Classes = {
++        background: require('./style_layer/background_style_layer'),
++        circle: require('./style_layer/circle_style_layer'),
++        fill: require('./style_layer/fill_style_layer'),
++        line: require('./style_layer/line_style_layer'),
++        raster: require('./style_layer/raster_style_layer'),
++        symbol: require('./style_layer/symbol_style_layer')
++    };
++    return new Classes[(refLayer || layer).type](layer, refLayer);
++};
++
++function StyleLayer(layer, refLayer) {
++    this.set(layer, refLayer);
+ }
+ 
+-Popup.prototype = util.inherit(Evented, /** @lends Popup.prototype */{
+-    options: {
+-        closeButton: true,
+-        closeOnClick: true
+-    },
++StyleLayer.prototype = util.inherit(Evented, {
+ 
+-    /**
+-     * Attaches the popup to a map
+-     * @param {Map} map
+-     * @returns {Popup} `this`
+-     */
+-    addTo: function(map) {
+-        this._map = map;
+-        this._map.on('move', this._update);
+-        if (this.options.closeOnClick) {
+-            this._map.on('click', this._onClickClose);
+-        }
+-        this._update();
+-        return this;
+-    },
++    set: function(layer, refLayer) {
++        this.id = layer.id;
++        this.ref = layer.ref;
++        this.metadata = layer.metadata;
++        this.type = (refLayer || layer).type;
++        this.source = (refLayer || layer).source;
++        this.sourceLayer = (refLayer || layer)['source-layer'];
++        this.minzoom = (refLayer || layer).minzoom;
++        this.maxzoom = (refLayer || layer).maxzoom;
++        this.filter = (refLayer || layer).filter;
+ 
+-    /**
+-     * Removes the popup from a map
+-     * @example
+-     * var popup = new mapboxgl.Popup().addTo(map);
+-     * popup.remove();
+-     * @returns {Popup} `this`
+-     */
+-    remove: function() {
+-        if (this._content && this._content.parentNode) {
+-            this._content.parentNode.removeChild(this._content);
++        this.paint = {};
++        this.layout = {};
++
++        this._paintSpecifications = styleSpec['paint_' + this.type];
++        this._layoutSpecifications = styleSpec['layout_' + this.type];
++
++        this._paintTransitions = {}; // {[propertyName]: StyleTransition}
++        this._paintTransitionOptions = {}; // {[className]: {[propertyName]: { duration:Number, delay:Number }}}
++        this._paintDeclarations = {}; // {[className]: {[propertyName]: StyleDeclaration}}
++        this._layoutDeclarations = {}; // {[propertyName]: StyleDeclaration}
++        this._layoutFunctions = {}; // {[propertyName]: Boolean}
++
++        var paintName, layoutName;
++
++        // Resolve paint declarations
++        for (var key in layer) {
++            var match = key.match(/^paint(?:\.(.*))?$/);
++            if (match) {
++                var klass = match[1] || '';
++                for (paintName in layer[key]) {
++                    this.setPaintProperty(paintName, layer[key][paintName], klass);
++                }
++            }
+         }
+ 
+-        if (this._container) {
+-            this._container.parentNode.removeChild(this._container);
+-            delete this._container;
++        // Resolve layout declarations
++        if (this.ref) {
++            this._layoutDeclarations = refLayer._layoutDeclarations;
++        } else {
++            for (layoutName in layer.layout) {
++                this.setLayoutProperty(layoutName, layer.layout[layoutName]);
++            }
+         }
+ 
+-        if (this._map) {
+-            this._map.off('move', this._update);
+-            this._map.off('click', this._onClickClose);
+-            delete this._map;
++        // set initial layout/paint values
++        for (paintName in this._paintSpecifications) {
++            this.paint[paintName] = this.getPaintValue(paintName);
++        }
++        for (layoutName in this._layoutSpecifications) {
++            this._updateLayoutValue(layoutName);
+         }
++    },
+ 
+-        return this;
++    setLayoutProperty: function(name, value) {
++
++        if (value == null) {
++            delete this._layoutDeclarations[name];
++        } else {
++            var key = 'layers.' + this.id + '.layout.' + name;
++            if (this._handleErrors(validateStyle.layoutProperty, key, name, value)) return;
++            this._layoutDeclarations[name] = new StyleDeclaration(this._layoutSpecifications[name], value);
++        }
++        this._updateLayoutValue(name);
+     },
+ 
+-    /**
+-     * Get the popup's geographical location
+-     * @returns {LngLat}
+-     */
+-    getLngLat: function() {
+-        return this._lngLat;
++    getLayoutProperty: function(name) {
++        return (
++            this._layoutDeclarations[name] &&
++            this._layoutDeclarations[name].value
++        );
+     },
+ 
+-    /**
+-     * Set the popup's geographical position and move it.
+-     * @param {LngLat} lnglat
+-     * @returns {Popup} `this`
+-     */
+-    setLngLat: function(lnglat) {
+-        this._lngLat = LngLat.convert(lnglat);
+-        this._update();
+-        return this;
++    getLayoutValue: function(name, globalProperties, featureProperties) {
++        var specification = this._layoutSpecifications[name];
++        var declaration = this._layoutDeclarations[name];
++
++        if (declaration) {
++            return declaration.calculate(globalProperties, featureProperties);
++        } else {
++            return specification.default;
++        }
+     },
+ 
+-    /**
+-     * Fill a popup element with text only content. This creates a text node
+-     * in the DOM, so it cannot end up appending raw HTML. Use this method
+-     * if you want an added level of security against XSS if the popup
+-     * content is user-provided.
+-     * @param {string} text
+-     * @returns {Popup} `this`
+-     * @example
+-     * var tooltip = new mapboxgl.Popup()
+-     *   .setLngLat(e.lngLat)
+-     *   .setText('Hello, world!')
+-     *   .addTo(map);
+-     */
+-    setText: function(text) {
+-        return this.setDOMContent(document.createTextNode(text));
++    setPaintProperty: function(name, value, klass) {
++        var validateStyleKey = 'layers.' + this.id + (klass ? '["paint.' + klass + '"].' : '.paint.') + name;
++
++        if (util.endsWith(name, TRANSITION_SUFFIX)) {
++            if (!this._paintTransitionOptions[klass || '']) {
++                this._paintTransitionOptions[klass || ''] = {};
++            }
++            if (value === null || value === undefined) {
++                delete this._paintTransitionOptions[klass || ''][name];
++            } else {
++                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
++                this._paintTransitionOptions[klass || ''][name] = value;
++            }
++        } else {
++            if (!this._paintDeclarations[klass || '']) {
++                this._paintDeclarations[klass || ''] = {};
++            }
++            if (value === null || value === undefined) {
++                delete this._paintDeclarations[klass || ''][name];
++            } else {
++                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
++                this._paintDeclarations[klass || ''][name] = new StyleDeclaration(this._paintSpecifications[name], value);
++            }
++        }
+     },
+ 
+-    /**
+-     * Fill a popup element with HTML content, provided as a string.
+-     * @param {string} html
+-     * @returns {Popup} `this`
+-     */
+-    setHTML: function(html) {
+-        var frag = document.createDocumentFragment();
+-        var temp = document.createElement('body'), child;
+-        temp.innerHTML = html;
+-        while (true) {
+-            child = temp.firstChild;
+-            if (!child) break;
+-            frag.appendChild(child);
++    getPaintProperty: function(name, klass) {
++        klass = klass || '';
++        if (util.endsWith(name, TRANSITION_SUFFIX)) {
++            return (
++                this._paintTransitionOptions[klass] &&
++                this._paintTransitionOptions[klass][name]
++            );
++        } else {
++            return (
++                this._paintDeclarations[klass] &&
++                this._paintDeclarations[klass][name] &&
++                this._paintDeclarations[klass][name].value
++            );
+         }
+-
+-        return this.setDOMContent(frag);
+     },
+ 
+-    /**
+-     * Fill a popup element with DOM content
+-     * @param {Node} htmlNode Popup content as a DOM node
+-     * @returns {Popup} `this`
+-     * @example
+-     * // create an element with the popup content
+-     * var div = document.createElement('div');
+-     * div.innerHTML = 'Hello, world!';
+-     * var tooltip = new mapboxgl.Popup()
+-     *   .setLngLat(e.lngLat)
+-     *   .setDOMContent(div)
+-     *   .addTo(map);
+-     */
+-    setDOMContent: function(htmlNode) {
+-        this._createContent();
+-        this._content.appendChild(htmlNode);
+-        this._update();
+-        return this;
++    getPaintValue: function(name, globalProperties, featureProperties) {
++        var specification = this._paintSpecifications[name];
++        var transition = this._paintTransitions[name];
++
++        if (transition) {
++            return transition.calculate(globalProperties, featureProperties);
++        } else if (specification.type === 'color' && specification.default) {
++            return parseColor(specification.default);
++        } else {
++            return specification.default;
++        }
+     },
+ 
+-    _createContent: function() {
+-        if (this._content && this._content.parentNode) {
+-            this._content.parentNode.removeChild(this._content);
++    getPaintValueStopZoomLevels: function(name) {
++        var transition = this._paintTransitions[name];
++        if (transition) {
++            return transition.declaration.stopZoomLevels;
++        } else {
++            return [];
+         }
++    },
+ 
+-        this._content = DOM.create('div', 'mapboxgl-popup-content', this._container);
++    getPaintInterpolationT: function(name, zoom) {
++        var transition = this._paintTransitions[name];
++        return transition.declaration.calculateInterpolationT({ zoom: zoom });
++    },
+ 
+-        if (this.options.closeButton) {
+-            this._closeButton = DOM.create('button', 'mapboxgl-popup-close-button', this._content);
+-            this._closeButton.innerHTML = '&#215;';
+-            this._closeButton.addEventListener('click', this._onClickClose);
++    isPaintValueFeatureConstant: function(name) {
++        var transition = this._paintTransitions[name];
++
++        if (transition) {
++            return transition.declaration.isFeatureConstant;
++        } else {
++            return true;
+         }
+     },
+ 
+-    _update: function() {
+-        if (!this._map || !this._lngLat || !this._content) { return; }
++    isPaintValueZoomConstant: function(name) {
++        var transition = this._paintTransitions[name];
+ 
+-        if (!this._container) {
+-            this._container = DOM.create('div', 'mapboxgl-popup', this._map.getContainer());
+-            this._tip       = DOM.create('div', 'mapboxgl-popup-tip', this._container);
+-            this._container.appendChild(this._content);
++        if (transition) {
++            return transition.declaration.isZoomConstant;
++        } else {
++            return true;
+         }
++    },
+ 
+-        var pos = this._map.project(this._lngLat).round(),
+-            anchor = this.options.anchor;
+ 
+-        if (!anchor) {
+-            var width = this._container.offsetWidth,
+-                height = this._container.offsetHeight;
++    isHidden: function(zoom) {
++        if (this.minzoom && zoom < this.minzoom) return true;
++        if (this.maxzoom && zoom >= this.maxzoom) return true;
++        if (this.layout['visibility'] === 'none') return true;
++        if (this.paint[this.type + '-opacity'] === 0) return true;
++        return false;
++    },
+ 
+-            if (pos.y < height) {
+-                anchor = ['top'];
+-            } else if (pos.y > this._map.transform.height - height) {
+-                anchor = ['bottom'];
+-            } else {
+-                anchor = [];
+-            }
++    updatePaintTransitions: function(classes, options, globalOptions, animationLoop) {
++        var declarations = util.extend({}, this._paintDeclarations['']);
++        for (var i = 0; i < classes.length; i++) {
++            util.extend(declarations, this._paintDeclarations[classes[i]]);
++        }
+ 
+-            if (pos.x < width / 2) {
+-                anchor.push('left');
+-            } else if (pos.x > this._map.transform.width - width / 2) {
+-                anchor.push('right');
+-            }
++        var name;
++        for (name in declarations) { // apply new declarations
++            this._applyPaintDeclaration(name, declarations[name], options, globalOptions, animationLoop);
++        }
++        for (name in this._paintTransitions) {
++            if (!(name in declarations)) // apply removed declarations
++                this._applyPaintDeclaration(name, null, options, globalOptions, animationLoop);
++        }
++    },
+ 
+-            if (anchor.length === 0) {
+-                anchor = 'bottom';
+-            } else {
+-                anchor = anchor.join('-');
++    updatePaintTransition: function(name, classes, options, globalOptions, animationLoop) {
++        var declaration = this._paintDeclarations[''][name];
++        for (var i = 0; i < classes.length; i++) {
++            var classPaintDeclarations = this._paintDeclarations[classes[i]];
++            if (classPaintDeclarations && classPaintDeclarations[name]) {
++                declaration = classPaintDeclarations[name];
+             }
+         }
++        this._applyPaintDeclaration(name, declaration, options, globalOptions, animationLoop);
++    },
+ 
+-        var anchorTranslate = {
+-            'top': 'translate(-50%,0)',
+-            'top-left': 'translate(0,0)',
+-            'top-right': 'translate(-100%,0)',
+-            'bottom': 'translate(-50%,-100%)',
+-            'bottom-left': 'translate(0,-100%)',
+-            'bottom-right': 'translate(-100%,-100%)',
+-            'left': 'translate(0,-50%)',
+-            'right': 'translate(-100%,-50%)'
+-        };
+-
+-        var classList = this._container.classList;
+-        for (var key in anchorTranslate) {
+-            classList.remove('mapboxgl-popup-anchor-' + key);
++    // update all zoom-dependent layout/paint values
++    recalculate: function(zoom, zoomHistory) {
++        for (var paintName in this._paintTransitions) {
++            this.paint[paintName] = this.getPaintValue(paintName, {zoom: zoom, zoomHistory: zoomHistory});
++        }
++        for (var layoutName in this._layoutFunctions) {
++            this.layout[layoutName] = this.getLayoutValue(layoutName, {zoom: zoom, zoomHistory: zoomHistory});
+         }
+-        classList.add('mapboxgl-popup-anchor-' + anchor);
+-
+-        DOM.setTransform(this._container, anchorTranslate[anchor] + ' translate(' + pos.x + 'px,' + pos.y + 'px)');
+     },
+ 
+-    _onClickClose: function() {
+-        this.remove();
+-    }
+-});
++    serialize: function(options) {
++        var output = {
++            'id': this.id,
++            'ref': this.ref,
++            'metadata': this.metadata,
++            'minzoom': this.minzoom,
++            'maxzoom': this.maxzoom
++        };
+ 
+-},{"../geo/lng_lat":256,"../util/dom":338,"../util/evented":341,"../util/util":349}],333:[function(require,module,exports){
+-'use strict';
++        for (var klass in this._paintDeclarations) {
++            var key = klass === '' ? 'paint' : 'paint.' + klass;
++            output[key] = util.mapObject(this._paintDeclarations[klass], getDeclarationValue);
++        }
+ 
+-module.exports = Actor;
++        if (!this.ref || (options && options.includeRefProperties)) {
++            util.extend(output, {
++                'type': this.type,
++                'source': this.source,
++                'source-layer': this.sourceLayer,
++                'filter': this.filter,
++                'layout': util.mapObject(this._layoutDeclarations, getDeclarationValue)
++            });
++        }
+ 
+-/**
+- * An implementation of the [Actor design pattern](http://en.wikipedia.org/wiki/Actor_model)
+- * that maintains the relationship between asynchronous tasks and the objects
+- * that spin them off - in this case, tasks like parsing parts of styles,
+- * owned by the styles
+- *
+- * @param {WebWorker} target
+- * @param {WebWorker} parent
+- * @private
+- */
+-function Actor(target, parent) {
+-    this.target = target;
+-    this.parent = parent;
+-    this.callbacks = {};
+-    this.callbackID = 0;
+-    this.receive = this.receive.bind(this);
+-    this.target.addEventListener('message', this.receive, false);
+-}
++        return util.filterObject(output, function(value, key) {
++            return value !== undefined && !(key === 'layout' && !Object.keys(value).length);
++        });
++    },
+ 
+-Actor.prototype.receive = function(message) {
+-    var data = message.data,
+-        callback;
++    // set paint transition based on a given paint declaration
++    _applyPaintDeclaration: function (name, declaration, options, globalOptions, animationLoop) {
++        var oldTransition = options.transition ? this._paintTransitions[name] : undefined;
+ 
+-    if (data.type === '<response>') {
+-        callback = this.callbacks[data.id];
+-        delete this.callbacks[data.id];
+-        callback(data.error || null, data.data);
+-    } else if (typeof data.id !== 'undefined') {
+-        var id = data.id;
+-        this.parent[data.type](data.data, function(err, data, buffers) {
+-            this.postMessage({
+-                type: '<response>',
+-                id: String(id),
+-                error: err ? String(err) : null,
+-                data: data
+-            }, buffers);
+-        }.bind(this));
+-    } else {
+-        this.parent[data.type](data.data);
+-    }
+-};
++        if (declaration === null || declaration === undefined) {
++            var spec = this._paintSpecifications[name];
++            declaration = new StyleDeclaration(spec, spec.default);
++        }
+ 
+-Actor.prototype.send = function(type, data, callback, buffers) {
+-    var id = null;
+-    if (callback) this.callbacks[id = this.callbackID++] = callback;
+-    this.postMessage({ type: type, id: String(id), data: data }, buffers);
+-};
++        if (oldTransition && oldTransition.declaration.json === declaration.json) return;
+ 
+-/**
+- * Wrapped postMessage API that abstracts around IE's lack of
+- * `transferList` support.
+- *
+- * @param {Object} message
+- * @param {Object} transferList
+- * @private
+- */
+-Actor.prototype.postMessage = function(message, transferList) {
+-    this.target.postMessage(message, transferList);
+-};
++        var transitionOptions = util.extend({
++            duration: 300,
++            delay: 0
++        }, globalOptions, this.getPaintProperty(name + TRANSITION_SUFFIX));
+ 
+-},{}],334:[function(require,module,exports){
+-'use strict';
++        var newTransition = this._paintTransitions[name] =
++                new StyleTransition(declaration, oldTransition, transitionOptions);
+ 
+-exports.getJSON = function(url, callback) {
+-    var xhr = new XMLHttpRequest();
+-    xhr.open('GET', url, true);
+-    xhr.setRequestHeader('Accept', 'application/json');
+-    xhr.onerror = function(e) {
+-        callback(e);
+-    };
+-    xhr.onload = function() {
+-        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
+-            var data;
+-            try {
+-                data = JSON.parse(xhr.response);
+-            } catch (err) {
+-                return callback(err);
+-            }
+-            callback(null, data);
+-        } else {
+-            callback(new Error(xhr.statusText));
++        if (!newTransition.instant()) {
++            newTransition.loopID = animationLoop.set(newTransition.endTime - Date.now());
+         }
+-    };
+-    xhr.send();
+-    return xhr;
+-};
+-
+-exports.getArrayBuffer = function(url, callback) {
+-    var xhr = new XMLHttpRequest();
+-    xhr.open('GET', url, true);
+-    xhr.responseType = 'arraybuffer';
+-    xhr.onerror = function(e) {
+-        callback(e);
+-    };
+-    xhr.onload = function() {
+-        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
+-            callback(null, xhr.response);
+-        } else {
+-            callback(new Error(xhr.statusText));
++        if (oldTransition) {
++            animationLoop.cancel(oldTransition.loopID);
+         }
+-    };
+-    xhr.send();
+-    return xhr;
+-};
+-
+-function sameOrigin(url) {
+-    var a = document.createElement('a');
+-    a.href = url;
+-    return a.protocol === document.location.protocol && a.host === document.location.host;
+-}
++    },
+ 
+-exports.getImage = function(url, callback) {
+-    return exports.getArrayBuffer(url, function(err, imgData) {
+-        if (err) return callback(err);
+-        var img = new Image();
+-        img.onload = function() {
+-            callback(null, img);
+-            (window.URL || window.webkitURL).revokeObjectURL(img.src);
+-        };
+-        var blob = new Blob([new Uint8Array(imgData)], { type: 'image/png' });
+-        img.src = (window.URL || window.webkitURL).createObjectURL(blob);
+-        img.getData = function() {
+-            var canvas = document.createElement('canvas');
+-            var context = canvas.getContext('2d');
+-            canvas.width = img.width;
+-            canvas.height = img.height;
+-            context.drawImage(img, 0, 0);
+-            return context.getImageData(0, 0, img.width, img.height).data;
+-        };
+-        return img;
+-    });
+-};
++    // update layout value if it's constant, or mark it as zoom-dependent
++    _updateLayoutValue: function(name) {
++        var declaration = this._layoutDeclarations[name];
+ 
+-exports.getVideo = function(urls, callback) {
+-    var video = document.createElement('video');
+-    video.onloadstart = function() {
+-        callback(null, video);
+-    };
+-    for (var i = 0; i < urls.length; i++) {
+-        var s = document.createElement('source');
+-        if (!sameOrigin(urls[i])) {
+-            video.crossOrigin = 'Anonymous';
++        if (declaration && declaration.isFunction) {
++            this._layoutFunctions[name] = true;
++        } else {
++            delete this._layoutFunctions[name];
++            this.layout[name] = this.getLayoutValue(name);
+         }
+-        s.src = urls[i];
+-        video.appendChild(s);
++    },
++
++    _handleErrors: function(validate, key, name, value) {
++        return validateStyle.emitErrors(this, validate.call(validateStyle, {
++            key: key,
++            layerType: this.type,
++            objectKey: name,
++            value: value,
++            styleSpec: styleSpec,
++            // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407
++            style: {glyphs: true, sprite: true}
++        }));
+     }
+-    video.getData = function() { return video; };
+-    return video;
+-};
++});
++
++function getDeclarationValue(declaration) {
++    return declaration.value;
++}
+ 
+-},{}],335:[function(require,module,exports){
++},{"../util/evented":354,"../util/util":362,"./parse_color":302,"./style_declaration":304,"./style_layer/background_style_layer":307,"./style_layer/circle_style_layer":308,"./style_layer/fill_style_layer":309,"./style_layer/line_style_layer":310,"./style_layer/raster_style_layer":311,"./style_layer/symbol_style_layer":312,"./style_spec":313,"./style_transition":314,"./validate_style":315}],307:[function(require,module,exports){
+ 'use strict';
+ 
+-/**
+- * Unlike js/util/browser.js, this code is written with the expectation
+- * of a browser environment with a global 'window' object
+- * @module browser
+- * @private
+- */
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-/**
+- * Provides a function that outputs milliseconds: either performance.now()
+- * or a fallback to Date.now()
+- */
+-module.exports.now = (function() {
+-    if (window.performance &&
+-        window.performance.now) {
+-        return window.performance.now.bind(window.performance);
+-    } else {
+-        return Date.now.bind(Date);
+-    }
+-}());
++function BackgroundStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-var frame = window.requestAnimationFrame ||
+-    window.mozRequestAnimationFrame ||
+-    window.webkitRequestAnimationFrame ||
+-    window.msRequestAnimationFrame;
++module.exports = BackgroundStyleLayer;
+ 
+-exports.frame = function(fn) {
+-    return frame(fn);
+-};
++BackgroundStyleLayer.prototype = util.inherit(StyleLayer, {});
+ 
+-var cancel = window.cancelAnimationFrame ||
+-    window.mozCancelAnimationFrame ||
+-    window.webkitCancelAnimationFrame ||
+-    window.msCancelAnimationFrame;
++},{"../../util/util":362,"../style_layer":306}],308:[function(require,module,exports){
++'use strict';
+ 
+-exports.cancelFrame = function(id) {
+-    cancel(id);
+-};
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-exports.timed = function (fn, dur, ctx) {
+-    if (!dur) {
+-        fn.call(ctx, 1);
+-        return null;
+-    }
++function CircleStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-    var abort = false,
+-        start = module.exports.now();
++module.exports = CircleStyleLayer;
+ 
+-    function tick(now) {
+-        if (abort) return;
+-        now = module.exports.now();
++CircleStyleLayer.prototype = util.inherit(StyleLayer, {});
+ 
+-        if (now >= start + dur) {
+-            fn.call(ctx, 1);
+-        } else {
+-            fn.call(ctx, (now - start) / dur);
+-            exports.frame(tick);
+-        }
+-    }
++},{"../../util/util":362,"../style_layer":306}],309:[function(require,module,exports){
++'use strict';
+ 
+-    exports.frame(tick);
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-    return function() { abort = true; };
+-};
++function FillStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-/**
+- * Test if the current browser supports Mapbox GL JS
+- * @param {Object} options
+- * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
+- *   if the performance of Mapbox GL JS would be dramatically worse than
+- *   expected (i.e. a software renderer would be used)
+- * @return {boolean}
+- */
+-exports.supported = require('mapbox-gl-js-supported');
++module.exports = FillStyleLayer;
+ 
+-exports.hardwareConcurrency = navigator.hardwareConcurrency || 8;
++FillStyleLayer.prototype = util.inherit(StyleLayer, {});
+ 
+-Object.defineProperty(exports, 'devicePixelRatio', {
+-    get: function() { return window.devicePixelRatio; }
+-});
++},{"../../util/util":362,"../style_layer":306}],310:[function(require,module,exports){
++'use strict';
+ 
+-exports.supportsWebp = false;
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-var webpImgTest = document.createElement('img');
+-webpImgTest.onload = function() {
+-    exports.supportsWebp = true;
+-};
+-webpImgTest.src = 'data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=';
++function LineStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-exports.supportsGeolocation = !!navigator.geolocation;
++module.exports = LineStyleLayer;
+ 
+-},{"mapbox-gl-js-supported":375}],336:[function(require,module,exports){
+-'use strict';
++LineStyleLayer.prototype = util.inherit(StyleLayer, {
+ 
+-var util = require('../util');
+-var isSupported = require('mapbox-gl-js-supported');
++    getPaintValue: function(name, globalProperties, featureProperties) {
++        var value = StyleLayer.prototype.getPaintValue.apply(this, arguments);
+ 
+-module.exports = Canvas;
++        // If the line is dashed, scale the dash lengths by the line
++        // width at the previous round zoom level.
++        if (value && name === 'line-dasharray') {
++            var flooredZoom = Math.floor(globalProperties.zoom);
++            if (this._flooredZoom !== flooredZoom) {
++                this._flooredZoom = flooredZoom;
++                this._flooredLineWidth = this.getPaintValue('line-width', globalProperties, featureProperties);
++            }
+ 
+-function Canvas(parent, container) {
+-    this.canvas = document.createElement('canvas');
++            value.fromScale *= this._flooredLineWidth;
++            value.toScale *= this._flooredLineWidth;
++        }
+ 
+-    if (parent && container) {
+-        this.canvas.style.position = 'absolute';
+-        this.canvas.classList.add('mapboxgl-canvas');
+-        this.canvas.addEventListener('webglcontextlost', parent._contextLost.bind(parent), false);
+-        this.canvas.addEventListener('webglcontextrestored', parent._contextRestored.bind(parent), false);
+-        this.canvas.setAttribute('tabindex', 0);
+-        container.appendChild(this.canvas);
++        return value;
+     }
+-}
+-
+-Canvas.prototype.resize = function(width, height) {
+-    var pixelRatio = window.devicePixelRatio || 1;
+-
+-    // Request the required canvas size taking the pixelratio into account.
+-    this.canvas.width = pixelRatio * width;
+-    this.canvas.height = pixelRatio * height;
++});
+ 
+-    // Maintain the same canvas size, potentially downscaling it for HiDPI displays
+-    this.canvas.style.width = width + 'px';
+-    this.canvas.style.height = height + 'px';
+-};
++},{"../../util/util":362,"../style_layer":306}],311:[function(require,module,exports){
++'use strict';
+ 
+-Canvas.prototype.getWebGLContext = function(attributes) {
+-    attributes = util.extend({}, attributes, isSupported.webGLContextAttributes);
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-    return this.canvas.getContext('webgl', attributes) ||
+-        this.canvas.getContext('experimental-webgl', attributes);
+-};
++function RasterStyleLayer() {
++    StyleLayer.apply(this, arguments);
++}
+ 
+-Canvas.prototype.getElement = function() {
+-    return this.canvas;
+-};
++module.exports = RasterStyleLayer;
+ 
+-},{"../util":349,"mapbox-gl-js-supported":375}],337:[function(require,module,exports){
+-'use strict';
++RasterStyleLayer.prototype = util.inherit(StyleLayer, {});
+ 
+-var Actor = require('../actor');
+-var WebWorkify = require('webworkify');
++},{"../../util/util":362,"../style_layer":306}],312:[function(require,module,exports){
++'use strict';
+ 
+-module.exports = Dispatcher;
++var util = require('../../util/util');
++var StyleLayer = require('../style_layer');
+ 
+-function Dispatcher(length, parent) {
+-    this.actors = [];
+-    this.currentActor = 0;
+-    for (var i = 0; i < length; i++) {
+-        var worker = new WebWorkify(require('../../source/worker'));
+-        var actor = new Actor(worker, parent);
+-        actor.name = "Worker " + i;
+-        this.actors.push(actor);
+-    }
++function SymbolStyleLayer() {
++    StyleLayer.apply(this, arguments);
+ }
+ 
+-Dispatcher.prototype = {
+-    broadcast: function(type, data) {
+-        for (var i = 0; i < this.actors.length; i++) {
+-            this.actors[i].send(type, data);
+-        }
+-    },
++module.exports = SymbolStyleLayer;
+ 
+-    send: function(type, data, callback, targetID, buffers) {
+-        if (typeof targetID !== 'number' || isNaN(targetID)) {
+-            // Use round robin to send requests to web workers.
+-            targetID = this.currentActor = (this.currentActor + 1) % this.actors.length;
+-        }
++SymbolStyleLayer.prototype = util.inherit(StyleLayer, {
+ 
+-        this.actors[targetID].send(type, data, callback, buffers);
+-        return targetID;
++    isHidden: function() {
++        if (StyleLayer.prototype.isHidden.apply(this, arguments)) return true;
++
++        var isTextHidden = this.paint['text-opacity'] === 0 || !this.layout['text-field'];
++        var isIconHidden = this.paint['icon-opacity'] === 0 || !this.layout['icon-image'];
++        if (isTextHidden && isIconHidden) return true;
++
++        return false;
+     },
+ 
+-    remove: function() {
+-        for (var i = 0; i < this.actors.length; i++) {
+-            this.actors[i].target.terminate();
++    getLayoutValue: function(name, globalProperties, featureProperties) {
++        if (name === 'text-rotation-alignment' &&
++                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
++                !this.getLayoutProperty('text-rotation-alignment')) {
++            return 'map';
++        } else if (name === 'icon-rotation-alignment' &&
++                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
++                !this.getLayoutProperty('icon-rotation-alignment')) {
++            return 'map';
++        } else {
++            return StyleLayer.prototype.getLayoutValue.apply(this, arguments);
+         }
+-        this.actors = [];
+     }
+-};
+ 
+-},{"../../source/worker":285,"../actor":333,"webworkify":420}],338:[function(require,module,exports){
++});
++
++},{"../../util/util":362,"../style_layer":306}],313:[function(require,module,exports){
+ 'use strict';
+ 
+-var Point = require('point-geometry');
++module.exports = require('mapbox-gl-style-spec/reference/latest');
+ 
+-exports.create = function (tagName, className, container) {
+-    var el = document.createElement(tagName);
+-    if (className) el.className = className;
+-    if (container) container.appendChild(el);
+-    return el;
+-};
++},{"mapbox-gl-style-spec/reference/latest":256}],314:[function(require,module,exports){
++'use strict';
+ 
+-var docStyle = document.documentElement.style;
++var util = require('../util/util');
++var interpolate = require('../util/interpolate');
+ 
+-function testProp(props) {
+-    for (var i = 0; i < props.length; i++) {
+-        if (props[i] in docStyle) {
+-            return props[i];
+-        }
+-    }
+-}
++module.exports = StyleTransition;
+ 
+-var selectProp = testProp(['userSelect', 'MozUserSelect', 'WebkitUserSelect', 'msUserSelect']),
+-    userSelect;
+-exports.disableDrag = function () {
+-    if (selectProp) {
+-        userSelect = docStyle[selectProp];
+-        docStyle[selectProp] = 'none';
++/*
++ * Represents a transition between two declarations
++ */
++function StyleTransition(declaration, oldTransition, value) {
++
++    this.declaration = declaration;
++    this.startTime = this.endTime = (new Date()).getTime();
++
++    var type = declaration.type;
++    if ((type === 'string' || type === 'array') && declaration.transitionable) {
++        this.interp = interpZoomTransitioned;
++    } else {
++        this.interp = interpolate[type];
+     }
+-};
+-exports.enableDrag = function () {
+-    if (selectProp) {
+-        docStyle[selectProp] = userSelect;
++
++    this.oldTransition = oldTransition;
++    this.duration = value.duration || 0;
++    this.delay = value.delay || 0;
++
++    if (!this.instant()) {
++        this.endTime = this.startTime + this.duration + this.delay;
++        this.ease = util.easeCubicInOut;
+     }
+-};
+ 
+-var transformProp = testProp(['transform', 'WebkitTransform']);
+-exports.setTransform = function(el, value) {
+-    el.style[transformProp] = value;
+-};
++    if (oldTransition && oldTransition.endTime <= this.startTime) {
++        // Old transition is done running, so we can
++        // delete its reference to its old transition.
+ 
+-// Suppress the next click, but only if it's immediate.
+-function suppressClick(e) {
+-    e.preventDefault();
+-    e.stopPropagation();
+-    window.removeEventListener('click', suppressClick, true);
++        delete oldTransition.oldTransition;
++    }
+ }
+-exports.suppressClick = function() {
+-    window.addEventListener('click', suppressClick, true);
+-    window.setTimeout(function() {
+-        window.removeEventListener('click', suppressClick, true);
+-    }, 0);
++
++StyleTransition.prototype.instant = function() {
++    return !this.oldTransition || !this.interp || (this.duration === 0 && this.delay === 0);
+ };
+ 
+-exports.mousePos = function (el, e) {
+-    var rect = el.getBoundingClientRect();
+-    e = e.touches ? e.touches[0] : e;
+-    return new Point(
+-        e.clientX - rect.left - el.clientLeft,
+-        e.clientY - rect.top - el.clientTop
++/*
++ * Return the value of the transitioning property at zoom level `z` and optional time `t`
++ */
++StyleTransition.prototype.calculate = function(globalProperties, featureProperties) {
++    var value = this.declaration.calculate(
++        util.extend({}, globalProperties, {duration: this.duration}),
++        featureProperties
+     );
+-};
+ 
+-exports.touchPos = function (el, e) {
+-    var rect = el.getBoundingClientRect(),
+-        points = [];
+-    for (var i = 0; i < e.touches.length; i++) {
+-        points.push(new Point(
+-            e.touches[i].clientX - rect.left - el.clientLeft,
+-            e.touches[i].clientY - rect.top - el.clientTop
+-        ));
++    if (this.instant()) return value;
++
++    var t = globalProperties.time || Date.now();
++
++    if (t < this.endTime) {
++        var oldValue = this.oldTransition.calculate(
++            util.extend({}, globalProperties, {time: this.startTime}),
++            featureProperties
++        );
++        var eased = this.ease((t - this.startTime - this.delay) / this.duration);
++        value = this.interp(oldValue, value, eased);
+     }
+-    return points;
++
++    return value;
++
+ };
+ 
+-},{"point-geometry":404}],339:[function(require,module,exports){
++function interpZoomTransitioned(from, to, t) {
++    return {
++        from: from.to,
++        fromScale: from.toScale,
++        to: to.to,
++        toScale: to.toScale,
++        t: t
++    };
++}
++
++},{"../util/interpolate":356,"../util/util":362}],315:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = {
+-    API_URL: 'https://api.mapbox.com',
+-    REQUIRE_ACCESS_TOKEN: true
++module.exports = require('mapbox-gl-style-spec/lib/validate_style.min');
++
++module.exports.emitErrors = function throwErrors(emitter, errors) {
++    if (errors && errors.length) {
++        for (var i = 0; i < errors.length; i++) {
++            emitter.fire('error', { error: new Error(errors[i].message) });
++        }
++        return true;
++    } else {
++        return false;
++    }
+ };
+ 
+-},{}],340:[function(require,module,exports){
++module.exports.throwErrors = function throwErrors(emitter, errors) {
++    if (errors) {
++        for (var i = 0; i < errors.length; i++) {
++            throw new Error(errors[i].message);
++        }
++    }
++};
++
++},{"mapbox-gl-style-spec/lib/validate_style.min":255}],316:[function(require,module,exports){
+ 'use strict';
+ 
+-var assert = require('assert');
++var Point = require('point-geometry');
+ 
+-module.exports = DictionaryCoder;
++module.exports = Anchor;
+ 
+-function DictionaryCoder(strings) {
+-    this._stringToNumber = {};
+-    this._numberToString = [];
+-    for (var i = 0; i < strings.length; i++) {
+-        var string = strings[i];
+-        this._stringToNumber[string] = i;
+-        this._numberToString[i] = string;
++function Anchor(x, y, angle, segment) {
++    this.x = x;
++    this.y = y;
++    this.angle = angle;
++
++    if (segment !== undefined) {
++        this.segment = segment;
+     }
+ }
+ 
+-DictionaryCoder.prototype.encode = function(string) {
+-    assert(string in this._stringToNumber);
+-    return this._stringToNumber[string];
+-};
++Anchor.prototype = Object.create(Point.prototype);
+ 
+-DictionaryCoder.prototype.decode = function(n) {
+-    assert(n < this._numberToString.length);
+-    return this._numberToString[n];
++Anchor.prototype.clone = function() {
++    return new Anchor(this.x, this.y, this.angle, this.segment);
+ };
+ 
+-},{"assert":52}],341:[function(require,module,exports){
++},{"point-geometry":400}],317:[function(require,module,exports){
+ 'use strict';
+ 
+-var util = require('./util');
++module.exports = checkMaxAngle;
+ 
+ /**
+- * Methods mixed in to other classes for event capabilities.
+- * @mixin Evented
++ * Labels placed around really sharp angles aren't readable. Check if any
++ * part of the potential label has a combined angle that is too big.
++ *
++ * @param {Array<Point>} line
++ * @param {Anchor} anchor The point on the line around which the label is anchored.
++ * @param {number} labelLength The length of the label in geometry units.
++ * @param {number} windowSize The check fails if the combined angles within a part of the line that is `windowSize` long is too big.
++ * @param {number} maxAngle The maximum combined angle that any window along the label is allowed to have.
++ *
++ * @returns {boolean} whether the label should be placed
++ * @private
+  */
+-var Evented = {
++function checkMaxAngle(line, anchor, labelLength, windowSize, maxAngle) {
+ 
+-    /**
+-     * Subscribe to a specified event with a listener function the latter gets the data object that was passed to `fire` and additionally `target` and `type` properties
+-     *
+-     * @param {string} type Event type
+-     * @param {Function} listener Function to be called when the event is fired
+-     * @returns {Object} `this`
+-     */
+-    on: function(type, listener) {
+-        this._events = this._events || {};
+-        this._events[type] = this._events[type] || [];
+-        this._events[type].push(listener);
++    // horizontal labels always pass
++    if (anchor.segment === undefined) return true;
+ 
+-        return this;
+-    },
++    var p = anchor;
++    var index = anchor.segment + 1;
++    var anchorDistance = 0;
+ 
+-    /**
+-     * Remove a event listener
+-     *
+-     * @param {string} [type] Event type. If none is specified, remove all listeners
+-     * @param {Function} [listener] Function to be called when the event is fired. If none is specified all listeners are removed
+-     * @returns {Object} `this`
+-     */
+-    off: function(type, listener) {
+-        if (!type) {
+-            // clear all listeners if no arguments specified
+-            delete this._events;
+-            return this;
+-        }
++    // move backwards along the line to the first segment the label appears on
++    while (anchorDistance > -labelLength / 2) {
++        index--;
+ 
+-        if (!this.listens(type)) return this;
++        // there isn't enough room for the label after the beginning of the line
++        if (index < 0) return false;
+ 
+-        if (listener) {
+-            var idx = this._events[type].indexOf(listener);
+-            if (idx >= 0) {
+-                this._events[type].splice(idx, 1);
+-            }
+-            if (!this._events[type].length) {
+-                delete this._events[type];
+-            }
+-        } else {
+-            delete this._events[type];
+-        }
++        anchorDistance -= line[index].dist(p);
++        p = line[index];
++    }
+ 
+-        return this;
+-    },
++    anchorDistance += line[index].dist(line[index + 1]);
++    index++;
+ 
+-    /**
+-     * Call a function once when an event has fired
+-     *
+-     * @param {string} type Event type.
+-     * @param {Function} listener Function to be called once when the event is fired
+-     * @returns {Object} `this`
+-     */
+-    once: function(type, listener) {
+-        var wrapper = function(data) {
+-            this.off(type, wrapper);
+-            listener.call(this, data);
+-        }.bind(this);
+-        this.on(type, wrapper);
+-        return this;
+-    },
++    // store recent corners and their total angle difference
++    var recentCorners = [];
++    var recentAngleDelta = 0;
+ 
+-    /**
+-     * Fire event of a given string type with the given data object
+-     *
+-     * @param {string} type Event type
+-     * @param {Object} [data] Optional data passed to the event receiver (e.g. {@link #EventData})
+-     * @returns {Object} `this`
+-     */
+-    fire: function(type, data) {
+-        if (!this.listens(type)) return this;
++    // move forwards by the length of the label and check angles along the way
++    while (anchorDistance < labelLength / 2) {
++        var prev = line[index - 1];
++        var current = line[index];
++        var next = line[index + 1];
+ 
+-        data = util.extend({}, data);
+-        util.extend(data, {type: type, target: this});
++        // there isn't enough room for the label before the end of the line
++        if (!next) return false;
+ 
+-        // make sure adding/removing listeners inside other listeners won't cause infinite loop
+-        var listeners = this._events[type].slice();
++        var angleDelta = prev.angleTo(current) - current.angleTo(next);
++        // restrict angle to -pi..pi range
++        angleDelta = Math.abs(((angleDelta + 3 * Math.PI) % (Math.PI * 2)) - Math.PI);
+ 
+-        for (var i = 0; i < listeners.length; i++) {
+-            listeners[i].call(this, data);
++        recentCorners.push({
++            distance: anchorDistance,
++            angleDelta: angleDelta
++        });
++        recentAngleDelta += angleDelta;
++
++        // remove corners that are far enough away from the list of recent anchors
++        while (anchorDistance - recentCorners[0].distance > windowSize) {
++            recentAngleDelta -= recentCorners.shift().angleDelta;
+         }
+ 
+-        return this;
+-    },
++        // the sum of angles within the window area exceeds the maximum allowed value. check fails.
++        if (recentAngleDelta > maxAngle) return false;
+ 
+-    /**
+-     * Check if an event is registered to a type
+-     * @param {string} type Event type
+-     * @returns {boolean} `true` if there is at least one registered listener for events of type `type`
+-     */
+-    listens: function(type) {
+-        return !!(this._events && this._events[type]);
++        index++;
++        anchorDistance += current.dist(next);
+     }
+-};
+ 
+-module.exports = Evented;
++    // no part of the line had an angle greater than the maximum allowed. check passes.
++    return true;
++}
+ 
+-},{"./util":349}],342:[function(require,module,exports){
++},{}],318:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = Glyphs;
++var Point = require('point-geometry');
+ 
+-function Glyphs(pbf, end) {
+-    this.stacks = pbf.readFields(readFontstacks, [], end);
+-}
++module.exports = clipLine;
+ 
+-function readFontstacks(tag, stacks, pbf) {
+-    if (tag === 1) {
+-        var fontstack = pbf.readMessage(readFontstack, {glyphs: {}});
+-        stacks.push(fontstack);
+-    }
+-}
++/**
++ * Returns the part of a multiline that intersects with the provided rectangular box.
++ *
++ * @param {Array<Array<Point>>} lines
++ * @param {number} x1 the left edge of the box
++ * @param {number} y1 the top edge of the box
++ * @param {number} x2 the right edge of the box
++ * @param {number} y2 the bottom edge of the box
++ * @returns {Array<Array<Point>>} lines
++ * @private
++ */
++function clipLine(lines, x1, y1, x2, y2) {
++    var clippedLines = [];
+ 
+-function readFontstack(tag, fontstack, pbf) {
+-    if (tag === 1) fontstack.name = pbf.readString();
+-    else if (tag === 2) fontstack.range = pbf.readString();
+-    else if (tag === 3) {
+-        var glyph = pbf.readMessage(readGlyph, {});
+-        fontstack.glyphs[glyph.id] = glyph;
+-    }
+-}
++    for (var l = 0; l < lines.length; l++) {
++        var line = lines[l];
++        var clippedLine;
+ 
+-function readGlyph(tag, glyph, pbf) {
+-    if (tag === 1) glyph.id = pbf.readVarint();
+-    else if (tag === 2) glyph.bitmap = pbf.readBytes();
+-    else if (tag === 3) glyph.width = pbf.readVarint();
+-    else if (tag === 4) glyph.height = pbf.readVarint();
+-    else if (tag === 5) glyph.left = pbf.readSVarint();
+-    else if (tag === 6) glyph.top = pbf.readSVarint();
+-    else if (tag === 7) glyph.advance = pbf.readVarint();
+-}
++        for (var i = 0; i < line.length - 1; i++) {
++            var p0 = line[i];
++            var p1 = line[i + 1];
+ 
+-},{}],343:[function(require,module,exports){
+-'use strict';
+ 
+-module.exports = interpolate;
++            if (p0.x < x1 && p1.x < x1) {
++                continue;
++            } else if (p0.x < x1) {
++                p0 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
++            } else if (p1.x < x1) {
++                p1 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
++            }
+ 
+-function interpolate(a, b, t) {
+-    return (a * (1 - t)) + (b * t);
++            if (p0.y < y1 && p1.y < y1) {
++                continue;
++            } else if (p0.y < y1) {
++                p0 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
++            } else if (p1.y < y1) {
++                p1 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
++            }
++
++            if (p0.x >= x2 && p1.x >= x2) {
++                continue;
++            } else if (p0.x >= x2) {
++                p0 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
++            } else if (p1.x >= x2) {
++                p1 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
++            }
++
++            if (p0.y >= y2 && p1.y >= y2) {
++                continue;
++            } else if (p0.y >= y2) {
++                p0 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
++            } else if (p1.y >= y2) {
++                p1 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
++            }
++
++            if (!clippedLine || !p0.equals(clippedLine[clippedLine.length - 1])) {
++                clippedLine = [p0];
++                clippedLines.push(clippedLine);
++            }
++
++            clippedLine.push(p1);
++        }
++    }
++
++    return clippedLines;
+ }
+ 
+-interpolate.number = interpolate;
++},{"point-geometry":400}],319:[function(require,module,exports){
++'use strict';
+ 
+-interpolate.vec2 = function(from, to, t) {
+-    return [
+-        interpolate(from[0], to[0], t),
+-        interpolate(from[1], to[1], t)
+-    ];
+-};
++var StructArrayType = require('../util/struct_array');
++var util = require('../util/util');
++var Point = require('point-geometry');
+ 
+-/*
+- * Interpolate between two colors given as 4-element arrays.
++/**
++ * A collision box represents an area of the map that that is covered by a
++ * label. CollisionFeature uses one or more of these collision boxes to
++ * represent all the area covered by a single label. They are used to
++ * prevent collisions between labels.
++ *
++ * A collision box actually represents a 3d volume. The first two dimensions,
++ * x and y, are specified with `anchor` along with `x1`, `y1`, `x2`, `y2`.
++ * The third dimension, zoom, is limited by `maxScale` which determines
++ * how far in the z dimensions the box extends.
++ *
++ * As you zoom in on a map, all points on the map get further and further apart
++ * but labels stay roughly the same size. Labels cover less real world area on
++ * the map at higher zoom levels than they do at lower zoom levels. This is why
++ * areas are are represented with an anchor point and offsets from that point
++ * instead of just using four absolute points.
++ *
++ * Line labels are represented by a set of these boxes spaced out along a line.
++ * When you zoom in, line labels cover less real world distance along the line
++ * than they used to. Collision boxes near the edges that used to cover label
++ * no longer do. If a box doesn't cover the label anymore it should be ignored
++ * when doing collision checks. `maxScale` is how much you can scale the map
++ * before the label isn't within the box anymore.
++ * For example
++ * lower zoom:
++ * https://cloud.githubusercontent.com/assets/1421652/8060094/4d975f76-0e91-11e5-84b1-4edeb30a5875.png
++ * slightly higher zoom:
++ * https://cloud.githubusercontent.com/assets/1421652/8060061/26ae1c38-0e91-11e5-8c5a-9f380bf29f0a.png
++ * In the zoomed in image the two grey boxes on either side don't cover the
++ * label anymore. Their maxScale is smaller than the current scale.
++ *
+  *
+- * @param {Color} from
+- * @param {Color} to
+- * @param {number} t interpolation factor between 0 and 1
+- * @returns {Color} interpolated color
++ * @class CollisionBoxArray
++ * @private
+  */
+-interpolate.color = function(from, to, t) {
+-    return [
+-        interpolate(from[0], to[0], t),
+-        interpolate(from[1], to[1], t),
+-        interpolate(from[2], to[2], t),
+-        interpolate(from[3], to[3], t)
+-    ];
+-};
+ 
+-interpolate.array = function(from, to, t) {
+-    return from.map(function(d, i) {
+-        return interpolate(d, to[i], t);
+-    });
+-};
++var CollisionBoxArray = module.exports = new StructArrayType({
++    members: [
++        // the box is centered around the anchor point
++        { type: 'Int16', name: 'anchorPointX' },
++        { type: 'Int16', name: 'anchorPointY' },
+ 
+-},{}],344:[function(require,module,exports){
+-'use strict';
++        // distances to the edges from the anchor
++        { type: 'Int16', name: 'x1' },
++        { type: 'Int16', name: 'y1' },
++        { type: 'Int16', name: 'x2' },
++        { type: 'Int16', name: 'y2' },
+ 
+-module.exports = {
+-    multiPolygonIntersectsBufferedMultiPoint: multiPolygonIntersectsBufferedMultiPoint,
+-    multiPolygonIntersectsMultiPolygon: multiPolygonIntersectsMultiPolygon,
+-    multiPolygonIntersectsBufferedMultiLine: multiPolygonIntersectsBufferedMultiLine
+-};
++        // the box is only valid for scales < maxScale.
++        // The box does not block other boxes at scales >= maxScale;
++        { type: 'Float32', name: 'maxScale' },
+ 
+-function multiPolygonIntersectsBufferedMultiPoint(multiPolygon, rings, radius) {
+-    for (var j = 0; j < multiPolygon.length; j++) {
+-        var polygon = multiPolygon[j];
+-        for (var i = 0; i < rings.length; i++) {
+-            var ring = rings[i];
+-            for (var k = 0; k < ring.length; k++) {
+-                var point = ring[k];
+-                if (polygonContainsPoint(polygon, point)) return true;
+-                if (pointIntersectsBufferedLine(point, polygon, radius)) return true;
+-            }
+-        }
+-    }
+-    return false;
+-}
++        // the index of the feature in the original vectortile
++        { type: 'Uint32', name: 'featureIndex' },
++        // the source layer the feature appears in
++        { type: 'Uint16', name: 'sourceLayerIndex' },
++        // the bucket the feature appears in
++        { type: 'Uint16', name: 'bucketIndex' },
+ 
+-function multiPolygonIntersectsMultiPolygon(multiPolygonA, multiPolygonB) {
++        // rotated and scaled bbox used for indexing
++        { type: 'Int16', name: 'bbox0' },
++        { type: 'Int16', name: 'bbox1' },
++        { type: 'Int16', name: 'bbox2' },
++        { type: 'Int16', name: 'bbox3' },
+ 
+-    if (multiPolygonA.length === 1 && multiPolygonA[0].length === 1) {
+-        return multiPolygonContainsPoint(multiPolygonB, multiPolygonA[0][0]);
+-    }
++        { type: 'Float32', name: 'placementScale' }
++    ]});
+ 
+-    for (var m = 0; m < multiPolygonB.length; m++) {
+-        var ring = multiPolygonB[m];
+-        for (var n = 0; n < ring.length; n++) {
+-            if (multiPolygonContainsPoint(multiPolygonA, ring[n])) return true;
+-        }
++util.extendAll(CollisionBoxArray.prototype.StructType.prototype, {
++    get anchorPoint() {
++        return new Point(this.anchorPointX, this.anchorPointY);
+     }
++});
+ 
+-    for (var j = 0; j < multiPolygonA.length; j++) {
+-        var polygon = multiPolygonA[j];
+-        for (var i = 0; i < polygon.length; i++) {
+-            if (multiPolygonContainsPoint(multiPolygonB, polygon[i])) return true;
+-        }
+-
+-        for (var k = 0; k < multiPolygonB.length; k++) {
+-            if (lineIntersectsLine(polygon, multiPolygonB[k])) return true;
+-        }
+-    }
++},{"../util/struct_array":360,"../util/util":362,"point-geometry":400}],320:[function(require,module,exports){
++'use strict';
+ 
+-    return false;
+-}
++module.exports = CollisionFeature;
+ 
+-function multiPolygonIntersectsBufferedMultiLine(multiPolygon, multiLine, radius) {
+-    for (var i = 0; i < multiLine.length; i++) {
+-        var line = multiLine[i];
++/**
++ * A CollisionFeature represents the area of the tile covered by a single label.
++ * It is used with CollisionTile to check if the label overlaps with any
++ * previous labels. A CollisionFeature is mostly just a set of CollisionBox
++ * objects.
++ *
++ * @class CollisionFeature
++ * @param {Array<Point>} line The geometry the label is placed on.
++ * @param {Anchor} anchor The point along the line around which the label is anchored.
++ * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
++ * @param {Array<string>} layerIDs The IDs of the layers that this CollisionFeature is a part of.
++ * @param {Object} shaped The text or icon shaping results.
++ * @param {number} boxScale A magic number used to convert from glyph metrics units to geometry units.
++ * @param {number} padding The amount of padding to add around the label edges.
++ * @param {boolean} alignLine Whether the label is aligned with the line or the viewport.
++ *
++ * @private
++ */
++function CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex, shaped, boxScale, padding, alignLine, straight) {
+ 
+-        for (var j = 0; j < multiPolygon.length; j++) {
+-            var polygon = multiPolygon[j];
++    var y1 = shaped.top * boxScale - padding;
++    var y2 = shaped.bottom * boxScale + padding;
++    var x1 = shaped.left * boxScale - padding;
++    var x2 = shaped.right * boxScale + padding;
+ 
+-            if (polygon.length >= 3) {
+-                for (var k = 0; k < line.length; k++) {
+-                    if (polygonContainsPoint(polygon, line[k])) return true;
+-                }
+-            }
++    this.boxStartIndex = collisionBoxArray.length;
+ 
+-            if (lineIntersectsBufferedLine(polygon, line, radius)) return true;
+-        }
+-    }
+-    return false;
+-}
++    if (alignLine) {
+ 
+-function lineIntersectsBufferedLine(lineA, lineB, radius) {
++        var height = y2 - y1;
++        var length = x2 - x1;
+ 
+-    if (lineA.length > 1) {
+-        if (lineIntersectsLine(lineA, lineB)) return true;
++        if (height > 0) {
++            // set minimum box height to avoid very many small labels
++            height = Math.max(10 * boxScale, height);
+ 
+-        // Check whether any point in either line is within radius of the other line
+-        for (var j = 0; j < lineB.length; j++) {
+-            if (pointIntersectsBufferedLine(lineB[j], lineA, radius)) return true;
++            if (straight) {
++                // used for icon labels that are aligned with the line, but don't curve along it
++                var vector = line[anchor.segment + 1].sub(line[anchor.segment])._unit()._mult(length);
++                var straightLine = [anchor.sub(vector), anchor.add(vector)];
++                this._addLineCollisionBoxes(collisionBoxArray, straightLine, anchor, 0, length, height, featureIndex, sourceLayerIndex, bucketIndex);
++            } else {
++                // used for text labels that curve along a line
++                this._addLineCollisionBoxes(collisionBoxArray, line, anchor, anchor.segment, length, height, featureIndex, sourceLayerIndex, bucketIndex);
++            }
+         }
+-    }
+ 
+-    for (var k = 0; k < lineA.length; k++) {
+-        if (pointIntersectsBufferedLine(lineA[k], lineB, radius)) return true;
++    } else {
++        collisionBoxArray.emplaceBack(anchor.x, anchor.y, x1, y1, x2, y2, Infinity, featureIndex, sourceLayerIndex, bucketIndex,
++                0, 0, 0, 0, 0);
+     }
+ 
+-    return false;
++    this.boxEndIndex = collisionBoxArray.length;
+ }
+ 
+-function lineIntersectsLine(lineA, lineB) {
+-    for (var i = 0; i < lineA.length - 1; i++) {
+-        var a0 = lineA[i];
+-        var a1 = lineA[i + 1];
+-        for (var j = 0; j < lineB.length - 1; j++) {
+-            var b0 = lineB[j];
+-            var b1 = lineB[j + 1];
+-            if (lineSegmentIntersectsLineSegment(a0, a1, b0, b1)) return true;
+-        }
+-    }
+-    return false;
+-}
++/**
++ * Create a set of CollisionBox objects for a line.
++ *
++ * @param {Array<Point>} line
++ * @param {Anchor} anchor
++ * @param {number} labelLength The length of the label in geometry units.
++ * @param {Anchor} anchor The point along the line around which the label is anchored.
++ * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
++ * @param {number} boxSize The size of the collision boxes that will be created.
++ *
++ * @private
++ */
++CollisionFeature.prototype._addLineCollisionBoxes = function(collisionBoxArray, line, anchor, segment, labelLength, boxSize, featureIndex, sourceLayerIndex, bucketIndex) {
++    var step = boxSize / 2;
++    var nBoxes = Math.floor(labelLength / step);
+ 
++    // offset the center of the first box by half a box so that the edge of the
++    // box is at the edge of the label.
++    var firstBoxOffset = -boxSize / 2;
+ 
+-// http://bryceboe.com/2006/10/23/line-segment-intersection-algorithm/
+-function isCounterClockwise(a, b, c) {
+-    return (c.y - a.y) * (b.x - a.x) > (b.y - a.y) * (c.x - a.x);
+-}
++    var bboxes = this.boxes;
+ 
+-function lineSegmentIntersectsLineSegment(a0, a1, b0, b1) {
+-    return isCounterClockwise(a0, b0, b1) !== isCounterClockwise(a1, b0, b1) &&
+-        isCounterClockwise(a0, a1, b0) !== isCounterClockwise(a0, a1, b1);
+-}
++    var p = anchor;
++    var index = segment + 1;
++    var anchorDistance = firstBoxOffset;
+ 
+-function pointIntersectsBufferedLine(p, line, radius) {
+-    var radiusSquared = radius * radius;
++    // move backwards along the line to the first segment the label appears on
++    do {
++        index--;
+ 
+-    if (line.length === 1) return p.distSqr(line[0]) < radiusSquared;
++        // there isn't enough room for the label after the beginning of the line
++        // checkMaxAngle should have already caught this
++        if (index < 0) return bboxes;
+ 
+-    for (var i = 1; i < line.length; i++) {
+-        // Find line segments that have a distance <= radius^2 to p
+-        // In that case, we treat the line as "containing point p".
+-        var v = line[i - 1], w = line[i];
+-        if (distToSegmentSquared(p, v, w) < radiusSquared) return true;
+-    }
+-    return false;
+-}
++        anchorDistance -= line[index].dist(p);
++        p = line[index];
++    } while (anchorDistance > -labelLength / 2);
+ 
+-// Code from http://stackoverflow.com/a/1501725/331379.
+-function distToSegmentSquared(p, v, w) {
+-    var l2 = v.distSqr(w);
+-    if (l2 === 0) return p.distSqr(v);
+-    var t = ((p.x - v.x) * (w.x - v.x) + (p.y - v.y) * (w.y - v.y)) / l2;
+-    if (t < 0) return p.distSqr(v);
+-    if (t > 1) return p.distSqr(w);
+-    return p.distSqr(w.sub(v)._mult(t)._add(v));
+-}
++    var segmentLength = line[index].dist(line[index + 1]);
+ 
+-// point in polygon ray casting algorithm
+-function multiPolygonContainsPoint(rings, p) {
+-    var c = false,
+-        ring, p1, p2;
++    for (var i = 0; i < nBoxes; i++) {
++        // the distance the box will be from the anchor
++        var boxDistanceToAnchor = -labelLength / 2 + i * step;
+ 
+-    for (var k = 0; k < rings.length; k++) {
+-        ring = rings[k];
+-        for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
+-            p1 = ring[i];
+-            p2 = ring[j];
+-            if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
+-                c = !c;
+-            }
+-        }
+-    }
+-    return c;
+-}
++        // the box is not on the current segment. Move to the next segment.
++        while (anchorDistance + segmentLength < boxDistanceToAnchor) {
++            anchorDistance += segmentLength;
++            index++;
+ 
+-function polygonContainsPoint(ring, p) {
+-    var c = false;
+-    for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
+-        var p1 = ring[i];
+-        var p2 = ring[j];
+-        if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
+-            c = !c;
++            // There isn't enough room before the end of the line.
++            if (index + 1 >= line.length) return bboxes;
++
++            segmentLength = line[index].dist(line[index + 1]);
+         }
++
++        // the distance the box will be from the beginning of the segment
++        var segmentBoxDistance = boxDistanceToAnchor - anchorDistance;
++
++        var p0 = line[index];
++        var p1 = line[index + 1];
++        var boxAnchorPoint = p1.sub(p0)._unit()._mult(segmentBoxDistance)._add(p0)._round();
++
++        var distanceToInnerEdge = Math.max(Math.abs(boxDistanceToAnchor - firstBoxOffset) - step / 2, 0);
++        var maxScale = labelLength / 2 / distanceToInnerEdge;
++
++        collisionBoxArray.emplaceBack(boxAnchorPoint.x, boxAnchorPoint.y,
++                -boxSize / 2, -boxSize / 2, boxSize / 2, boxSize / 2, maxScale,
++                featureIndex, sourceLayerIndex, bucketIndex,
++                0, 0, 0, 0, 0);
+     }
+-    return c;
+-}
+ 
+-},{}],345:[function(require,module,exports){
++    return bboxes;
++};
++
++},{}],321:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = LRUCache;
++var Point = require('point-geometry');
++var EXTENT = require('../data/bucket').EXTENT;
++var Grid = require('grid-index');
+ 
+-/**
+- * A [least-recently-used cache](http://en.wikipedia.org/wiki/Cache_algorithms)
+- * with hash lookup made possible by keeping a list of keys in parallel to
+- * an array of dictionary of values
+- *
+- * @param {number} max number of permitted values
+- * @param {Function} onRemove callback called with items when they expire
+- * @private
+- */
+-function LRUCache(max, onRemove) {
+-    this.max = max;
+-    this.onRemove = onRemove;
+-    this.reset();
+-}
++module.exports = CollisionTile;
+ 
+ /**
+- * Clear the cache
++ * A collision tile used to prevent symbols from overlapping. It keep tracks of
++ * where previous symbols have been placed and is used to check if a new
++ * symbol overlaps with any previously added symbols.
+  *
+- * @returns {LRUCache} this cache
++ * @class CollisionTile
++ * @param {number} angle
++ * @param {number} pitch
+  * @private
+  */
+-LRUCache.prototype.reset = function() {
+-    for (var key in this.data) {
+-        this.onRemove(this.data[key]);
++function CollisionTile(angle, pitch, collisionBoxArray) {
++    if (typeof angle === 'object') {
++        var serialized = angle;
++        collisionBoxArray = pitch;
++        angle = serialized.angle;
++        pitch = serialized.pitch;
++        this.grid = new Grid(serialized.grid);
++        this.ignoredGrid = new Grid(serialized.ignoredGrid);
++    } else {
++        this.grid = new Grid(EXTENT, 12, 6);
++        this.ignoredGrid = new Grid(EXTENT, 12, 0);
+     }
+ 
+-    this.data = {};
+-    this.order = [];
++    this.angle = angle;
++    this.pitch = pitch;
+ 
+-    return this;
+-};
++    var sin = Math.sin(angle),
++        cos = Math.cos(angle);
++    this.rotationMatrix = [cos, -sin, sin, cos];
++    this.reverseRotationMatrix = [cos, sin, -sin, cos];
+ 
+-/**
+- * Add a key, value combination to the cache, trimming its size if this pushes
+- * it over max length.
+- *
+- * @param {string} key lookup key for the item
+- * @param {*} data any value
+- *
+- * @returns {LRUCache} this cache
+- * @private
+- */
+-LRUCache.prototype.add = function(key, data) {
++    // Stretch boxes in y direction to account for the map tilt.
++    this.yStretch = 1 / Math.cos(pitch / 180 * Math.PI);
+ 
+-    if (this.has(key)) {
+-        this.order.splice(this.order.indexOf(key), 1);
+-        this.data[key] = data;
+-        this.order.push(key);
++    // The amount the map is squished depends on the y position.
++    // Sort of account for this by making all boxes a bit bigger.
++    this.yStretch = Math.pow(this.yStretch, 1.3);
+ 
+-    } else {
+-        this.data[key] = data;
+-        this.order.push(key);
++    this.collisionBoxArray = collisionBoxArray;
++    if (collisionBoxArray.length === 0) {
++        // the first collisionBoxArray is passed to a CollisionTile
+ 
+-        if (this.order.length > this.max) {
+-            var removedData = this.get(this.order[0]);
+-            if (removedData) this.onRemove(removedData);
+-        }
++        // tempCollisionBox
++        collisionBoxArray.emplaceBack();
++
++        var maxInt16 = 32767;
++        //left
++        collisionBoxArray.emplaceBack(0, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
++        // right
++        collisionBoxArray.emplaceBack(EXTENT, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
++        // top
++        collisionBoxArray.emplaceBack(0, 0, -maxInt16, 0, maxInt16, 0, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
++        // bottom
++        collisionBoxArray.emplaceBack(0, EXTENT, -maxInt16, 0, maxInt16, 0, maxInt16,
++                0, 0, 0, 0, 0, 0, 0, 0,
++                0);
+     }
+ 
+-    return this;
+-};
++    this.tempCollisionBox = collisionBoxArray.get(0);
++    this.edges = [
++        collisionBoxArray.get(1),
++        collisionBoxArray.get(2),
++        collisionBoxArray.get(3),
++        collisionBoxArray.get(4)
++    ];
++}
+ 
+-/**
+- * Determine whether the value attached to `key` is present
+- *
+- * @param {string} key the key to be looked-up
+- * @returns {boolean} whether the cache has this value
+- * @private
+- */
+-LRUCache.prototype.has = function(key) {
+-    return key in this.data;
++CollisionTile.prototype.serialize = function() {
++    var data = {
++        angle: this.angle,
++        pitch: this.pitch,
++        grid: this.grid.toArrayBuffer(),
++        ignoredGrid: this.ignoredGrid.toArrayBuffer()
++    };
++    return {
++        data: data,
++        transferables: [data.grid, data.ignoredGrid]
++    };
+ };
+ 
+-/**
+- * List all keys in the cache
+- *
+- * @returns {Array<string>} an array of keys in this cache.
+- * @private
+- */
+-LRUCache.prototype.keys = function() {
+-    return this.order;
+-};
++CollisionTile.prototype.minScale = 0.25;
++CollisionTile.prototype.maxScale = 2;
++
+ 
+ /**
+- * Get the value attached to a specific key. If the key is not found,
+- * returns `null`
++ * Find the scale at which the collisionFeature can be shown without
++ * overlapping with other features.
+  *
+- * @param {string} key the key to look up
+- * @returns {*} the data, or null if it isn't found
++ * @param {CollisionFeature} collisionFeature
++ * @returns {number} placementScale
+  * @private
+  */
+-LRUCache.prototype.get = function(key) {
+-    if (!this.has(key)) { return null; }
++CollisionTile.prototype.placeCollisionFeature = function(collisionFeature, allowOverlap, avoidEdges) {
+ 
+-    var data = this.data[key];
++    var collisionBoxArray = this.collisionBoxArray;
++    var minPlacementScale = this.minScale;
++    var rotationMatrix = this.rotationMatrix;
++    var yStretch = this.yStretch;
+ 
+-    delete this.data[key];
+-    this.order.splice(this.order.indexOf(key), 1);
++    for (var b = collisionFeature.boxStartIndex; b < collisionFeature.boxEndIndex; b++) {
+ 
+-    return data;
+-};
++        var box = collisionBoxArray.get(b);
+ 
+-/**
+- * Change the max size of the cache.
+- *
+- * @param {number} max the max size of the cache
+- * @returns {LRUCache} this cache
+- * @private
+- */
+-LRUCache.prototype.setMaxSize = function(max) {
+-    this.max = max;
++        var anchorPoint = box.anchorPoint._matMult(rotationMatrix);
++        var x = anchorPoint.x;
++        var y = anchorPoint.y;
+ 
+-    while (this.order.length > this.max) {
+-        var removedData = this.get(this.order[0]);
+-        if (removedData) this.onRemove(removedData);
++        var x1 = x + box.x1;
++        var y1 = y + box.y1 * yStretch;
++        var x2 = x + box.x2;
++        var y2 = y + box.y2 * yStretch;
++
++        box.bbox0 = x1;
++        box.bbox1 = y1;
++        box.bbox2 = x2;
++        box.bbox3 = y2;
++
++        if (!allowOverlap) {
++            var blockingBoxes = this.grid.query(x1, y1, x2, y2);
++
++            for (var i = 0; i < blockingBoxes.length; i++) {
++                var blocking = collisionBoxArray.get(blockingBoxes[i]);
++                var blockingAnchorPoint = blocking.anchorPoint._matMult(rotationMatrix);
++
++                minPlacementScale = this.getPlacementScale(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking);
++                if (minPlacementScale >= this.maxScale) {
++                    return minPlacementScale;
++                }
++            }
++        }
++
++        if (avoidEdges) {
++            var rotatedCollisionBox;
++
++            if (this.angle) {
++                var reverseRotationMatrix = this.reverseRotationMatrix;
++                var tl = new Point(box.x1, box.y1).matMult(reverseRotationMatrix);
++                var tr = new Point(box.x2, box.y1).matMult(reverseRotationMatrix);
++                var bl = new Point(box.x1, box.y2).matMult(reverseRotationMatrix);
++                var br = new Point(box.x2, box.y2).matMult(reverseRotationMatrix);
++
++                rotatedCollisionBox = this.tempCollisionBox;
++                rotatedCollisionBox.anchorPointX = box.anchorPoint.x;
++                rotatedCollisionBox.anchorPointY = box.anchorPoint.y;
++                rotatedCollisionBox.x1 = Math.min(tl.x, tr.x, bl.x, br.x);
++                rotatedCollisionBox.y1 = Math.min(tl.y, tr.x, bl.x, br.x);
++                rotatedCollisionBox.x2 = Math.max(tl.x, tr.x, bl.x, br.x);
++                rotatedCollisionBox.y2 = Math.max(tl.y, tr.x, bl.x, br.x);
++                rotatedCollisionBox.maxScale = box.maxScale;
++            } else {
++                rotatedCollisionBox = box;
++            }
++
++            for (var k = 0; k < this.edges.length; k++) {
++                var edgeBox = this.edges[k];
++                minPlacementScale = this.getPlacementScale(minPlacementScale, box.anchorPoint, rotatedCollisionBox, edgeBox.anchorPoint, edgeBox);
++                if (minPlacementScale >= this.maxScale) {
++                    return minPlacementScale;
++                }
++            }
++        }
+     }
+ 
+-    return this;
++    return minPlacementScale;
+ };
+ 
+-},{}],346:[function(require,module,exports){
+-'use strict';
++CollisionTile.prototype.queryRenderedSymbols = function(minX, minY, maxX, maxY, scale) {
++    var sourceLayerFeatures = {};
++    var result = [];
+ 
+-var config = require('./config');
+-var browser = require('./browser');
++    var collisionBoxArray = this.collisionBoxArray;
++    var rotationMatrix = this.rotationMatrix;
++    var anchorPoint = new Point(minX, minY)._matMult(rotationMatrix);
+ 
+-function normalizeURL(url, pathPrefix, accessToken) {
+-    accessToken = accessToken || config.ACCESS_TOKEN;
++    var queryBox = this.tempCollisionBox;
++    queryBox.anchorX = anchorPoint.x;
++    queryBox.anchorY = anchorPoint.y;
++    queryBox.x1 = 0;
++    queryBox.y1 = 0;
++    queryBox.x2 = maxX - minX;
++    queryBox.y2 = maxY - minY;
++    queryBox.maxScale = scale;
+ 
+-    if (!accessToken && config.REQUIRE_ACCESS_TOKEN) {
+-        throw new Error('An API access token is required to use Mapbox GL. ' +
+-            'See https://www.mapbox.com/developers/api/#access-tokens');
++    // maxScale is stored using a Float32. Convert `scale` to the stored Float32 value.
++    scale = queryBox.maxScale;
++
++    var searchBox = [
++        anchorPoint.x + queryBox.x1 / scale,
++        anchorPoint.y + queryBox.y1 / scale * this.yStretch,
++        anchorPoint.x + queryBox.x2 / scale,
++        anchorPoint.y + queryBox.y2 / scale * this.yStretch
++    ];
++
++    var blockingBoxKeys = this.grid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
++    var blockingBoxKeys2 = this.ignoredGrid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
++    for (var k = 0; k < blockingBoxKeys2.length; k++) {
++        blockingBoxKeys.push(blockingBoxKeys2[k]);
+     }
+ 
+-    url = url.replace(/^mapbox:\/\//, config.API_URL + pathPrefix);
+-    url += url.indexOf('?') !== -1 ? '&access_token=' : '?access_token=';
++    for (var i = 0; i < blockingBoxKeys.length; i++) {
++        var blocking = collisionBoxArray.get(blockingBoxKeys[i]);
+ 
+-    if (config.REQUIRE_ACCESS_TOKEN) {
+-        if (accessToken[0] === 's') {
+-            throw new Error('Use a public access token (pk.*) with Mapbox GL JS, not a secret access token (sk.*). ' +
+-                'See https://www.mapbox.com/developers/api/#access-tokens');
++        var sourceLayer = blocking.sourceLayerIndex;
++        var featureIndex = blocking.featureIndex;
++        if (sourceLayerFeatures[sourceLayer] === undefined) {
++            sourceLayerFeatures[sourceLayer] = {};
+         }
+ 
+-        url += accessToken;
++        if (!sourceLayerFeatures[sourceLayer][featureIndex]) {
++            var blockingAnchorPoint = blocking.anchorPoint.matMult(rotationMatrix);
++            var minPlacementScale = this.getPlacementScale(this.minScale, anchorPoint, queryBox, blockingAnchorPoint, blocking);
++            if (minPlacementScale >= scale) {
++                sourceLayerFeatures[sourceLayer][featureIndex] = true;
++                result.push(blockingBoxKeys[i]);
++            }
++        }
+     }
+ 
+-    return url;
+-}
++    return result;
++};
+ 
+-module.exports.normalizeStyleURL = function(url, accessToken) {
+-    if (!url.match(/^mapbox:\/\/styles\//))
+-        return url;
++CollisionTile.prototype.getPlacementScale = function(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking) {
+ 
+-    var split = url.split('/');
+-    var user = split[3];
+-    var style = split[4];
+-    var draft = split[5] ? '/draft' : '';
+-    return normalizeURL('mapbox://' + user + '/' + style + draft, '/styles/v1/', accessToken);
+-};
++    // Find the lowest scale at which the two boxes can fit side by side without overlapping.
++    // Original algorithm:
++    var anchorDiffX = anchorPoint.x - blockingAnchorPoint.x;
++    var anchorDiffY = anchorPoint.y - blockingAnchorPoint.y;
++    var s1 = (blocking.x1 - box.x2) / anchorDiffX; // scale at which new box is to the left of old box
++    var s2 = (blocking.x2 - box.x1) / anchorDiffX; // scale at which new box is to the right of old box
++    var s3 = (blocking.y1 - box.y2) * this.yStretch / anchorDiffY; // scale at which new box is to the top of old box
++    var s4 = (blocking.y2 - box.y1) * this.yStretch / anchorDiffY; // scale at which new box is to the bottom of old box
+ 
+-module.exports.normalizeSourceURL = function(url, accessToken) {
+-    if (!url.match(/^mapbox:\/\//))
+-        return url;
++    if (isNaN(s1) || isNaN(s2)) s1 = s2 = 1;
++    if (isNaN(s3) || isNaN(s4)) s3 = s4 = 1;
+ 
+-    // TileJSON requests need a secure flag appended to their URLs so
+-    // that the server knows to send SSL-ified resource references.
+-    return normalizeURL(url + '.json', '/v4/', accessToken) + '&secure';
+-};
++    var collisionFreeScale = Math.min(Math.max(s1, s2), Math.max(s3, s4));
++    var blockingMaxScale = blocking.maxScale;
++    var boxMaxScale = box.maxScale;
+ 
+-module.exports.normalizeGlyphsURL = function(url, accessToken) {
+-    if (!url.match(/^mapbox:\/\//))
+-        return url;
++    if (collisionFreeScale > blockingMaxScale) {
++        // After a box's maxScale the label has shrunk enough that the box is no longer needed to cover it,
++        // so unblock the new box at the scale that the old box disappears.
++        collisionFreeScale = blockingMaxScale;
++    }
+ 
+-    var user = url.split('/')[3];
+-    return normalizeURL('mapbox://' + user + '/{fontstack}/{range}.pbf', '/fonts/v1/', accessToken);
+-};
++    if (collisionFreeScale > boxMaxScale) {
++        // If the box can only be shown after it is visible, then the box can never be shown.
++        // But the label can be shown after this box is not visible.
++        collisionFreeScale = boxMaxScale;
++    }
+ 
+-module.exports.normalizeSpriteURL = function(url, format, ext, accessToken) {
+-    if (!url.match(/^mapbox:\/\/sprites\//))
+-        return url + format + ext;
++    if (collisionFreeScale > minPlacementScale &&
++            collisionFreeScale >= blocking.placementScale) {
++        // If this collision occurs at a lower scale than previously found collisions
++        // and the collision occurs while the other label is visible
+ 
+-    var split = url.split('/');
+-    var user = split[3];
+-    var style = split[4];
+-    var draft = split[5] ? '/draft' : '';
+-    return normalizeURL('mapbox://' + user + '/' + style + draft + '/sprite' + format + ext, '/styles/v1/', accessToken);
++        // this this is the lowest scale at which the label won't collide with anything
++        minPlacementScale = collisionFreeScale;
++    }
++
++    return minPlacementScale;
+ };
+ 
+-module.exports.normalizeTileURL = function(url, sourceUrl, tileSize) {
+-    if (!sourceUrl || !sourceUrl.match(/^mapbox:\/\//))
+-        return url;
+ 
+-    // The v4 mapbox tile API supports 512x512 image tiles only when @2x
+-    // is appended to the tile URL. If `tileSize: 512` is specified for
+-    // a Mapbox raster source force the @2x suffix even if a non hidpi
+-    // device.
+-    url = url.replace(/([?&]access_token=)tk\.[^&]+/, '$1' + config.ACCESS_TOKEN);
+-    var extension = browser.supportsWebp ? 'webp' : '$1';
+-    return url.replace(/\.((?:png|jpg)\d*)(?=$|\?)/, browser.devicePixelRatio >= 2 || tileSize === 512 ? '@2x.' + extension : '.' + extension);
++/**
++ * Remember this collisionFeature and what scale it was placed at to block
++ * later features from overlapping with it.
++ *
++ * @param {CollisionFeature} collisionFeature
++ * @param {number} minPlacementScale
++ * @private
++ */
++CollisionTile.prototype.insertCollisionFeature = function(collisionFeature, minPlacementScale, ignorePlacement) {
++
++    var grid = ignorePlacement ? this.ignoredGrid : this.grid;
++    var collisionBoxArray = this.collisionBoxArray;
++
++    for (var k = collisionFeature.boxStartIndex; k < collisionFeature.boxEndIndex; k++) {
++        var box = collisionBoxArray.get(k);
++        box.placementScale = minPlacementScale;
++        if (minPlacementScale < this.maxScale) {
++            grid.insert(k, box.bbox0, box.bbox1, box.bbox2, box.bbox3);
++        }
++    }
+ };
+ 
+-},{"./browser":335,"./config":339}],347:[function(require,module,exports){
++},{"../data/bucket":260,"grid-index":222,"point-geometry":400}],322:[function(require,module,exports){
+ 'use strict';
+ 
+-// Note: all "sizes" are measured in bytes
++var interpolate = require('../util/interpolate');
++var Anchor = require('../symbol/anchor');
++var checkMaxAngle = require('./check_max_angle');
+ 
+-var assert = require('assert');
++module.exports = getAnchors;
+ 
+-module.exports = StructArrayType;
++function getAnchors(line, spacing, maxAngle, shapedText, shapedIcon, glyphSize, boxScale, overscaling, tileExtent) {
+ 
+-var viewTypes = {
+-    'Int8': Int8Array,
+-    'Uint8': Uint8Array,
+-    'Uint8Clamped': Uint8ClampedArray,
+-    'Int16': Int16Array,
+-    'Uint16': Uint16Array,
+-    'Int32': Int32Array,
+-    'Uint32': Uint32Array,
+-    'Float32': Float32Array,
+-    'Float64': Float64Array
+-};
++    // Resample a line to get anchor points for labels and check that each
++    // potential label passes text-max-angle check and has enough froom to fit
++    // on the line.
+ 
+-/**
+- * @typedef StructMember
+- * @private
+- * @property {string} name
+- * @property {string} type
+- * @property {number} components
+- */
++    var angleWindowSize = shapedText ?
++        3 / 5 * glyphSize * boxScale :
++        0;
+ 
+-var structArrayTypeCache = {};
++    var labelLength = Math.max(
++        shapedText ? shapedText.right - shapedText.left : 0,
++        shapedIcon ? shapedIcon.right - shapedIcon.left : 0);
+ 
+-/**
+- * `StructArrayType` is used to create new `StructArray` types.
+- *
+- * `StructArray` provides an abstraction over `ArrayBuffer` and `TypedArray` making it behave like
+- * an array of typed structs. A StructArray is comprised of elements. Each element has a set of
+- * members that are defined when the `StructArrayType` is created.
+- *
+- * StructArrays useful for creating large arrays that:
+- * - can be transferred from workers as a Transferable object
+- * - can be copied cheaply
+- * - use less memory for lower-precision members
+- * - can be used as buffers in WebGL.
+- *
+- * @class StructArrayType
+- * @param {Array.<StructMember>}
+- * @param options
+- * @param {number} options.alignment Use `4` to align members to 4 byte boundaries. Default is 1.
+- *
+- * @example
+- *
+- * var PointArrayType = new StructArrayType({
+- *  members: [
+- *      { type: 'Int16', name: 'x' },
+- *      { type: 'Int16', name: 'y' }
+- *  ]});
+- *
+- *  var pointArray = new PointArrayType();
+- *  pointArray.emplaceBack(10, 15);
+- *  pointArray.emplaceBack(20, 35);
+- *
+- *  point = pointArray.get(0);
+- *  assert(point.x === 10);
+- *  assert(point.y === 15);
+- *
+- * @private
+- */
+-function StructArrayType(options) {
++    // Is the line continued from outside the tile boundary?
++    var isLineContinued = line[0].x === 0 || line[0].x === tileExtent || line[0].y === 0 || line[0].y === tileExtent;
+ 
+-    var key = JSON.stringify(options);
+-    if (structArrayTypeCache[key]) {
+-        return structArrayTypeCache[key];
++    // Is the label long, relative to the spacing?
++    // If so, adjust the spacing so there is always a minimum space of `spacing / 4` between label edges.
++    if (spacing - labelLength * boxScale  < spacing / 4) {
++        spacing = labelLength * boxScale + spacing / 4;
+     }
+ 
+-    if (options.alignment === undefined) options.alignment = 1;
++    // Offset the first anchor by:
++    // Either half the label length plus a fixed extra offset if the line is not continued
++    // Or half the spacing if the line is continued.
+ 
+-    function StructType() {
+-        Struct.apply(this, arguments);
+-    }
++    // For non-continued lines, add a bit of fixed extra offset to avoid collisions at T intersections.
++    var fixedExtraOffset = glyphSize * 2;
+ 
+-    StructType.prototype = Object.create(Struct.prototype);
++    var offset = !isLineContinued ?
++        ((labelLength / 2 + fixedExtraOffset) * boxScale * overscaling) % spacing :
++        (spacing / 2 * overscaling) % spacing;
+ 
+-    var offset = 0;
+-    var maxSize = 0;
+-    var usedTypes = ['Uint8'];
++    return resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength * boxScale, isLineContinued, false, tileExtent);
++}
+ 
+-    StructType.prototype.members = options.members.map(function(member) {
+-        member = {
+-            name: member.name,
+-            type: member.type,
+-            components: member.components || 1
+-        };
+ 
+-        assert(member.name.length);
+-        assert(member.type in viewTypes);
++function resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, placeAtMiddle, tileExtent) {
+ 
+-        if (usedTypes.indexOf(member.type) < 0) usedTypes.push(member.type);
++    var halfLabelLength = labelLength / 2;
++    var lineLength = 0;
++    for (var k = 0; k < line.length - 1; k++) {
++        lineLength += line[k].dist(line[k + 1]);
++    }
+ 
+-        var typeSize = sizeOf(member.type);
+-        maxSize = Math.max(maxSize, typeSize);
+-        member.offset = offset = align(offset, Math.max(options.alignment, typeSize));
++    var distance = 0,
++        markedDistance = offset - spacing;
+ 
+-        for (var c = 0; c < member.components; c++) {
+-            Object.defineProperty(StructType.prototype, member.name + (member.components === 1 ? '' : c), {
+-                get: createGetter(member, c),
+-                set: createSetter(member, c)
+-            });
+-        }
++    var anchors = [];
+ 
+-        offset += typeSize * member.components;
++    for (var i = 0; i < line.length - 1; i++) {
+ 
+-        return member;
+-    });
++        var a = line[i],
++            b = line[i + 1];
+ 
+-    StructType.prototype.alignment = options.alignment;
+-    StructType.prototype.size = align(offset, Math.max(maxSize, options.alignment));
++        var segmentDist = a.dist(b),
++            angle = b.angleTo(a);
+ 
+-    function StructArrayType() {
+-        StructArray.apply(this, arguments);
+-        this.members = StructType.prototype.members;
+-    }
++        while (markedDistance + spacing < distance + segmentDist) {
++            markedDistance += spacing;
+ 
+-    StructArrayType.serialize = serializeStructArrayType;
++            var t = (markedDistance - distance) / segmentDist,
++                x = interpolate(a.x, b.x, t),
++                y = interpolate(a.y, b.y, t);
+ 
+-    StructArrayType.prototype = Object.create(StructArray.prototype);
+-    StructArrayType.prototype.StructType = StructType;
+-    StructArrayType.prototype.bytesPerElement = StructType.prototype.size;
+-    StructArrayType.prototype.emplaceBack = createEmplaceBack(StructType.prototype.members, StructType.prototype.size);
+-    StructArrayType.prototype._usedTypes = usedTypes;
++            // Check that the point is within the tile boundaries and that
++            // the label would fit before the beginning and end of the line
++            // if placed at this point.
++            if (x >= 0 && x < tileExtent && y >= 0 && y < tileExtent &&
++                    markedDistance - halfLabelLength >= 0 &&
++                    markedDistance + halfLabelLength <= lineLength) {
++                var anchor = new Anchor(x, y, angle, i)._round();
+ 
++                if (!angleWindowSize || checkMaxAngle(line, anchor, labelLength, angleWindowSize, maxAngle)) {
++                    anchors.push(anchor);
++                }
++            }
++        }
+ 
+-    structArrayTypeCache[key] = StructArrayType;
++        distance += segmentDist;
++    }
+ 
+-    return StructArrayType;
+-}
++    if (!placeAtMiddle && !anchors.length && !isLineContinued) {
++        // The first attempt at finding anchors at which labels can be placed failed.
++        // Try again, but this time just try placing one anchor at the middle of the line.
++        // This has the most effect for short lines in overscaled tiles, since the
++        // initial offset used in overscaled tiles is calculated to align labels with positions in
++        // parent tiles instead of placing the label as close to the beginning as possible.
++        anchors = resample(line, distance / 2, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, true, tileExtent);
++    }
+ 
+-/**
+- * Serialize the StructArray type. This serializes the *type* not an instance of the type.
+- * @private
+- */
+-function serializeStructArrayType() {
+-    return {
+-        members: this.prototype.StructType.prototype.members,
+-        alignment: this.prototype.StructType.prototype.alignment,
+-        bytesPerElement: this.prototype.bytesPerElement
+-    };
++    return anchors;
+ }
+ 
++},{"../symbol/anchor":316,"../util/interpolate":356,"./check_max_angle":317}],323:[function(require,module,exports){
++'use strict';
+ 
+-function align(offset, size) {
+-    return Math.ceil(offset / size) * size;
+-}
++var ShelfPack = require('shelf-pack');
+ 
+-function sizeOf(type) {
+-    return viewTypes[type].BYTES_PER_ELEMENT;
+-}
++module.exports = GlyphAtlas;
++function GlyphAtlas(width, height) {
++    this.width = width;
++    this.height = height;
+ 
+-function getArrayViewName(type) {
+-    return type.toLowerCase();
++    this.bin = new ShelfPack(width, height);
++    this.index = {};
++    this.ids = {};
++    this.data = new Uint8Array(width * height);
+ }
+ 
++GlyphAtlas.prototype.getGlyphs = function() {
++    var glyphs = {},
++        split,
++        name,
++        id;
+ 
+-/*
+- * > I saw major perf gains by shortening the source of these generated methods (i.e. renaming
+- * > elementIndex to i) (likely due to v8 inlining heuristics).
+- * - lucaswoj
+- */
+-function createEmplaceBack(members, bytesPerElement) {
+-    var usedTypeSizes = [];
+-    var argNames = [];
+-    var body = '' +
+-    'var i = this.length;\n' +
+-    'this.resize(this.length + 1);\n';
++    for (var key in this.ids) {
++        split = key.split('#');
++        name = split[0];
++        id = split[1];
+ 
+-    for (var m = 0; m < members.length; m++) {
+-        var member = members[m];
+-        var size = sizeOf(member.type);
++        if (!glyphs[name]) glyphs[name] = [];
++        glyphs[name].push(id);
++    }
+ 
+-        if (usedTypeSizes.indexOf(size) < 0) {
+-            usedTypeSizes.push(size);
+-            body += 'var o' + size.toFixed(0) + ' = i * ' + (bytesPerElement / size).toFixed(0) + ';\n';
+-        }
++    return glyphs;
++};
+ 
+-        for (var c = 0; c < member.components; c++) {
+-            var argName = 'v' + argNames.length;
+-            var index = 'o' + size.toFixed(0) + ' + ' + (member.offset / size + c).toFixed(0);
+-            body += 'this.' + getArrayViewName(member.type) + '[' + index + '] = ' + argName + ';\n';
+-            argNames.push(argName);
+-        }
++GlyphAtlas.prototype.getRects = function() {
++    var rects = {},
++        split,
++        name,
++        id;
++
++    for (var key in this.ids) {
++        split = key.split('#');
++        name = split[0];
++        id = split[1];
++
++        if (!rects[name]) rects[name] = {};
++        rects[name][id] = this.index[key];
+     }
+ 
+-    body += 'return i;';
++    return rects;
++};
+ 
+-    return new Function(argNames, body);
+-}
+ 
+-function createMemberComponentString(member, component) {
+-    var elementOffset = 'this._pos' + sizeOf(member.type).toFixed(0);
+-    var componentOffset = (member.offset / sizeOf(member.type) + component).toFixed(0);
+-    var index = elementOffset + ' + ' + componentOffset;
+-    return 'this._structArray.' + getArrayViewName(member.type) + '[' + index + ']';
++GlyphAtlas.prototype.addGlyph = function(id, name, glyph, buffer) {
++    if (!glyph) {
++        // console.warn('missing glyph', code, String.fromCharCode(code));
++        return null;
++    }
++    var key = name + "#" + glyph.id;
+ 
+-}
++    // The glyph is already in this texture.
++    if (this.index[key]) {
++        if (this.ids[key].indexOf(id) < 0) {
++            this.ids[key].push(id);
++        }
++        return this.index[key];
++    }
+ 
+-function createGetter(member, c) {
+-    return new Function([], 'return ' + createMemberComponentString(member, c) + ';');
+-}
++    // The glyph bitmap has zero width.
++    if (!glyph.bitmap) {
++        return null;
++    }
+ 
+-function createSetter(member, c) {
+-    return new Function(['x'], createMemberComponentString(member, c) + ' = x;');
+-}
++    var bufferedWidth = glyph.width + buffer * 2;
++    var bufferedHeight = glyph.height + buffer * 2;
+ 
+-/**
+- * @class Struct
+- * @param {StructArray} structArray The StructArray the struct is stored in
+- * @param {number} index The index of the struct in the StructArray.
+- * @private
+- */
+-function Struct(structArray, index) {
+-    this._structArray = structArray;
+-    this._pos1 = index * this.size;
+-    this._pos2 = this._pos1 / 2;
+-    this._pos4 = this._pos1 / 4;
+-    this._pos8 = this._pos1 / 8;
+-}
++    // Add a 1px border around every image.
++    var padding = 1;
++    var packWidth = bufferedWidth + 2 * padding;
++    var packHeight = bufferedHeight + 2 * padding;
+ 
+-/**
+- * @class StructArray
+- * The StructArray class is inherited by the custom StructArrayType classes created with
+- * `new StructArrayType(members, options)`.
+- * @private
+- */
+-function StructArray(serialized) {
+-    if (serialized !== undefined) {
+-    // Create from an serialized StructArray
+-        this.arrayBuffer = serialized.arrayBuffer;
+-        this.length = serialized.length;
+-        this.capacity = this.arrayBuffer.byteLength / this.bytesPerElement;
+-        this._refreshViews();
++    // Increase to next number divisible by 4, but at least 1.
++    // This is so we can scale down the texture coordinates and pack them
++    // into 2 bytes rather than 4 bytes.
++    packWidth += (4 - packWidth % 4);
++    packHeight += (4 - packHeight % 4);
+ 
+-    // Create a new StructArray
+-    } else {
+-        this.capacity = -1;
+-        this.resize(0);
++    var rect = this.bin.packOne(packWidth, packHeight);
++    if (!rect) {
++        this.resize();
++        rect = this.bin.packOne(packWidth, packHeight);
++    }
++    if (!rect) {
++        console.warn('glyph bitmap overflow');
++        return null;
++    }
++
++    this.index[key] = rect;
++    this.ids[key] = [id];
++
++    var target = this.data;
++    var source = glyph.bitmap;
++    for (var y = 0; y < bufferedHeight; y++) {
++        var y1 = this.width * (rect.y + y + padding) + rect.x + padding;
++        var y2 = bufferedWidth * y;
++        for (var x = 0; x < bufferedWidth; x++) {
++            target[y1 + x] = source[y2 + x];
++        }
+     }
+-}
+-
+-/**
+- * @property {number}
+- * @private
+- * @readonly
+- */
+-StructArray.prototype.DEFAULT_CAPACITY = 128;
+ 
+-/**
+- * @property {number}
+- * @private
+- * @readonly
+- */
+-StructArray.prototype.RESIZE_MULTIPLIER = 5;
++    this.dirty = true;
+ 
+-/**
+- * Serialize this StructArray instance
+- * @private
+- */
+-StructArray.prototype.serialize = function() {
+-    this.trim();
+-    return {
+-        length: this.length,
+-        arrayBuffer: this.arrayBuffer
+-    };
++    return rect;
+ };
+ 
+-/**
+- * Return the Struct at the given location in the array.
+- * @private
+- * @param {number} index The index of the element.
+- */
+-StructArray.prototype.get = function(index) {
+-    return new this.StructType(this, index);
+-};
++GlyphAtlas.prototype.resize = function() {
++    var origw = this.width,
++        origh = this.height;
+ 
+-/**
+- * Resize the array to discard unused capacity.
+- * @private
+- */
+-StructArray.prototype.trim = function() {
+-    if (this.length !== this.capacity) {
+-        this.capacity = this.length;
+-        this.arrayBuffer = this.arrayBuffer.slice(0, this.length * this.bytesPerElement);
+-        this._refreshViews();
++    // For now, don't grow the atlas beyond 1024x1024 because of how
++    // texture coords pack into unsigned byte in symbol bucket.
++    if (origw > 512 || origh > 512) return;
++
++    if (this.texture) {
++        if (this.gl) {
++            this.gl.deleteTexture(this.texture);
++        }
++        this.texture = null;
++    }
++
++    this.width *= 2;
++    this.height *= 2;
++    this.bin.resize(this.width, this.height);
++
++    var buf = new ArrayBuffer(this.width * this.height),
++        src, dst;
++    for (var i = 0; i < origh; i++) {
++        src = new Uint8Array(this.data.buffer, origh * i, origw);
++        dst = new Uint8Array(buf, origh * i * 2, origw);
++        dst.set(src);
+     }
++    this.data = new Uint8Array(buf);
+ };
+ 
+-/**
+- * Resize the array.
+- * If `n` is greater than the current length then additional elements with undefined values are added.
+- * If `n` is less than the current length then the array will be reduced to the first `n` elements.
+- * @param {number} n The new size of the array.
+- */
+-StructArray.prototype.resize = function(n) {
+-    this.length = n;
+-    if (n > this.capacity) {
+-        this.capacity = Math.max(n, Math.floor(this.capacity * this.RESIZE_MULTIPLIER), this.DEFAULT_CAPACITY);
+-        this.arrayBuffer = new ArrayBuffer(this.capacity * this.bytesPerElement);
++GlyphAtlas.prototype.bind = function(gl) {
++    this.gl = gl;
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, this.width, this.height, 0, gl.ALPHA, gl.UNSIGNED_BYTE, null);
+ 
+-        var oldUint8Array = this.uint8;
+-        this._refreshViews();
+-        if (oldUint8Array) this.uint8.set(oldUint8Array);
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
+     }
+ };
+ 
+-/**
+- * Create TypedArray views for the current ArrayBuffer.
+- * @private
+- */
+-StructArray.prototype._refreshViews = function() {
+-    for (var t = 0; t < this._usedTypes.length; t++) {
+-        var type = this._usedTypes[t];
+-        this[getArrayViewName(type)] = new viewTypes[type](this.arrayBuffer);
++GlyphAtlas.prototype.updateTexture = function(gl) {
++    this.bind(gl);
++    if (this.dirty) {
++        gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.ALPHA, gl.UNSIGNED_BYTE, this.data);
++        this.dirty = false;
+     }
+ };
+ 
+-},{"assert":52}],348:[function(require,module,exports){
++},{"shelf-pack":424}],324:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = resolveTokens;
++var normalizeURL = require('../util/mapbox').normalizeGlyphsURL;
++var getArrayBuffer = require('../util/ajax').getArrayBuffer;
++var Glyphs = require('../util/glyphs');
++var GlyphAtlas = require('../symbol/glyph_atlas');
++var Protobuf = require('pbf');
++
++module.exports = GlyphSource;
+ 
+ /**
+- * Replace tokens in a string template with values in an object
++ * A glyph source has a URL from which to load new glyphs and manages
++ * GlyphAtlases in which to store glyphs used by the requested fontstacks
++ * and ranges.
+  *
+- * @param {Object} properties a key/value relationship between tokens and replacements
+- * @param {string} text the template string
+- * @returns {string} the template with tokens replaced
++ * @param {string} url glyph template url
+  * @private
+  */
+-function resolveTokens(properties, text) {
+-    return text.replace(/{([^{}()\[\]<>$=:;.,^]+)}/g, function(match, key) {
+-        return key in properties ? properties[key] : '';
+-    });
++function GlyphSource(url) {
++    this.url = url && normalizeURL(url);
++    this.atlases = {};
++    this.stacks = {};
++    this.loading = {};
+ }
+ 
+-},{}],349:[function(require,module,exports){
+-'use strict';
++GlyphSource.prototype.getSimpleGlyphs = function(fontstack, glyphIDs, uid, callback) {
++    if (this.stacks[fontstack] === undefined) {
++        this.stacks[fontstack] = {};
++    }
++    if (this.atlases[fontstack] === undefined) {
++        this.atlases[fontstack] = new GlyphAtlas(128, 128);
++    }
+ 
+-var UnitBezier = require('unitbezier');
+-var Coordinate = require('../geo/coordinate');
++    var glyphs = {};
++    var stack = this.stacks[fontstack];
++    var atlas = this.atlases[fontstack];
+ 
+-/**
+- * Given a value `t` that varies between 0 and 1, return
+- * an interpolation function that eases between 0 and 1 in a pleasing
+- * cubic in-out fashion.
+- *
+- * @param {number} t input
+- * @returns {number} input
+- * @private
+- */
+-exports.easeCubicInOut = function (t) {
+-    if (t <= 0) return 0;
+-    if (t >= 1) return 1;
+-    var t2 = t * t,
+-        t3 = t2 * t;
+-    return 4 * (t < 0.5 ? t3 : 3 * (t - t2) + t3 - 0.75);
+-};
++    // the number of pixels the sdf bitmaps are padded by
++    var buffer = 3;
+ 
+-/**
+- * Given given (x, y), (x1, y1) control points for a bezier curve,
+- * return a function that interpolates along that curve.
+- *
+- * @param {number} p1x control point 1 x coordinate
+- * @param {number} p1y control point 1 y coordinate
+- * @param {number} p2x control point 2 x coordinate
+- * @param {number} p2y control point 2 y coordinate
+- * @returns {Function} interpolator: receives number value, returns
+- * number value.
+- * @private
+- */
+-exports.bezier = function(p1x, p1y, p2x, p2y) {
+-    var bezier = new UnitBezier(p1x, p1y, p2x, p2y);
+-    return function(t) {
+-        return bezier.solve(t);
+-    };
+-};
++    var missing = {};
++    var remaining = 0;
++    var range;
+ 
+-/**
+- * A default bezier-curve powered easing function with
+- * control points (0.25, 0.1) and (0.25, 1)
+- *
+- * @param {number} t
+- * @returns {number} output
+- * @private
+- */
+-exports.ease = exports.bezier(0.25, 0.1, 0.25, 1);
++    for (var i = 0; i < glyphIDs.length; i++) {
++        var glyphID = glyphIDs[i];
++        range = Math.floor(glyphID / 256);
+ 
+-/**
+- * Given a four-element array of numbers that represents a color in
+- * RGBA, return a version for which the RGB components are multiplied
+- * by the A (alpha) component
+- *
+- * @param {Array<number>} color color array
+- * @returns {Array<number>} premultiplied color array
+- * @private
+- */
+-exports.premultiply = function (color) {
+-    if (!color) return null;
+-    var opacity = color[3];
+-    return [
+-        color[0] * opacity,
+-        color[1] * opacity,
+-        color[2] * opacity,
+-        opacity
+-    ];
+-};
++        if (stack[range]) {
++            var glyph = stack[range].glyphs[glyphID];
++            var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
++            if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
++        } else {
++            if (missing[range] === undefined) {
++                missing[range] = [];
++                remaining++;
++            }
++            missing[range].push(glyphID);
++        }
++    }
+ 
+-/**
+- * constrain n to the given range via min + max
+- *
+- * @param {number} n value
+- * @param {number} min the minimum value to be returned
+- * @param {number} max the maximum value to be returned
+- * @returns {number} the clamped value
+- * @private
+- */
+-exports.clamp = function (n, min, max) {
+-    return Math.min(max, Math.max(min, n));
+-};
++    if (!remaining) callback(undefined, glyphs, fontstack);
+ 
+-/*
+- * constrain n to the given range, excluding the minimum, via modular arithmetic
+- * @param {number} n value
+- * @param {number} min the minimum value to be returned, exclusive
+- * @param {number} max the maximum value to be returned, inclusive
+- * @returns {number} constrained number
+- * @private
+- */
+-exports.wrap = function (n, min, max) {
+-    var d = max - min;
+-    var w = ((n - min) % d + d) % d + min;
+-    return (w === min) ? max : w;
+-};
++    var onRangeLoaded = function(err, range, data) {
++        // TODO not be silent about errors
++        if (!err) {
++            var stack = this.stacks[fontstack][range] = data.stacks[0];
++            for (var i = 0; i < missing[range].length; i++) {
++                var glyphID = missing[range][i];
++                var glyph = stack.glyphs[glyphID];
++                var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
++                if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
++            }
++        }
++        remaining--;
++        if (!remaining) callback(undefined, glyphs, fontstack);
++    }.bind(this);
+ 
+-/*
+- * return the first non-null and non-undefined argument to this function.
+- * @returns {*} argument
+- * @private
+- */
+-exports.coalesce = function() {
+-    for (var i = 0; i < arguments.length; i++) {
+-        var arg = arguments[i];
+-        if (arg !== null && arg !== undefined)
+-            return arg;
++    for (var r in missing) {
++        this.loadRange(fontstack, r, onRangeLoaded);
+     }
+ };
+ 
+-/*
+- * Call an asynchronous function on an array of arguments,
+- * calling `callback` with the completed results of all calls.
+- *
+- * @param {Array<*>} array input to each call of the async function.
+- * @param {Function} fn an async function with signature (data, callback)
+- * @param {Function} callback a callback run after all async work is done.
+- * called with an array, containing the results of each async call.
+- * @returns {undefined}
+- * @private
+- */
+-exports.asyncAll = function (array, fn, callback) {
+-    if (!array.length) { return callback(null, []); }
+-    var remaining = array.length;
+-    var results = new Array(array.length);
+-    var error = null;
+-    array.forEach(function (item, i) {
+-        fn(item, function (err, result) {
+-            if (err) error = err;
+-            results[i] = result;
+-            if (--remaining === 0) callback(error, results);
++// A simplified representation of the glyph containing only the properties needed for shaping.
++function SimpleGlyph(glyph, rect, buffer) {
++    var padding = 1;
++    this.advance = glyph.advance;
++    this.left = glyph.left - buffer - padding;
++    this.top = glyph.top + buffer + padding;
++    this.rect = rect;
++}
++
++GlyphSource.prototype.loadRange = function(fontstack, range, callback) {
++    if (range * 256 > 65535) return callback('glyphs > 65535 not supported');
++
++    if (this.loading[fontstack] === undefined) {
++        this.loading[fontstack] = {};
++    }
++    var loading = this.loading[fontstack];
++
++    if (loading[range]) {
++        loading[range].push(callback);
++    } else {
++        loading[range] = [callback];
++
++        var rangeName = (range * 256) + '-' + (range * 256 + 255);
++        var url = glyphUrl(fontstack, rangeName, this.url);
++
++        getArrayBuffer(url, function(err, data) {
++            var glyphs = !err && new Glyphs(new Protobuf(new Uint8Array(data)));
++            for (var i = 0; i < loading[range].length; i++) {
++                loading[range][i](err, range, glyphs);
++            }
++            delete loading[range];
+         });
+-    });
++    }
+ };
+ 
+-/*
+- * Compute the difference between the keys in one object and the keys
+- * in another object.
+- *
+- * @param {Object} obj
+- * @param {Object} other
+- * @returns {Array<string>} keys difference
+- * @private
+- */
+-exports.keysDifference = function (obj, other) {
+-    var difference = [];
+-    for (var i in obj) {
+-        if (!(i in other)) {
+-            difference.push(i);
+-        }
+-    }
+-    return difference;
++GlyphSource.prototype.getGlyphAtlas = function(fontstack) {
++    return this.atlases[fontstack];
+ };
+ 
+ /**
+- * Given a destination object and optionally many source objects,
+- * copy all properties from the source objects into the destination.
+- * The last source object given overrides properties from previous
+- * source objects.
+- * @param {Object} dest destination object
+- * @param {...Object} sources sources from which properties are pulled
+- * @returns {Object} dest
++ * Use CNAME sharding to load a specific glyph range over a randomized
++ * but consistent subdomain.
++ * @param {string} fontstack comma-joined fonts
++ * @param {string} range comma-joined range
++ * @param {url} url templated url
++ * @param {string} [subdomains=abc] subdomains as a string where each letter is one.
++ * @returns {string} a url to load that section of glyphs
+  * @private
+  */
+-exports.extend = function (dest) {
+-    for (var i = 1; i < arguments.length; i++) {
+-        var src = arguments[i];
+-        for (var k in src) {
+-            dest[k] = src[k];
+-        }
++function glyphUrl(fontstack, range, url, subdomains) {
++    subdomains = subdomains || 'abc';
++
++    return url
++        .replace('{s}', subdomains[fontstack.length % subdomains.length])
++        .replace('{fontstack}', fontstack)
++        .replace('{range}', range);
++}
++
++},{"../symbol/glyph_atlas":323,"../util/ajax":347,"../util/glyphs":355,"../util/mapbox":359,"pbf":394}],325:[function(require,module,exports){
++'use strict';
++
++module.exports = function (features, textFeatures, geometries) {
++
++    var leftIndex = {},
++        rightIndex = {},
++        mergedFeatures = [],
++        mergedGeom = [],
++        mergedTexts = [],
++        mergedIndex = 0,
++        k;
++
++    function add(k) {
++        mergedFeatures.push(features[k]);
++        mergedGeom.push(geometries[k]);
++        mergedTexts.push(textFeatures[k]);
++        mergedIndex++;
+     }
+-    return dest;
+-};
+ 
+-/**
+- * Extend a destination object with all properties of the src object,
+- * using defineProperty instead of simple assignment.
+- * @param {Object} dest
+- * @param {Object} src
+- * @returns {Object} dest
+- * @private
+- */
+-exports.extendAll = function (dest, src) {
+-    for (var i in src) {
+-        Object.defineProperty(dest, i, Object.getOwnPropertyDescriptor(src, i));
++    function mergeFromRight(leftKey, rightKey, geom) {
++        var i = rightIndex[leftKey];
++        delete rightIndex[leftKey];
++        rightIndex[rightKey] = i;
++
++        mergedGeom[i][0].pop();
++        mergedGeom[i][0] = mergedGeom[i][0].concat(geom[0]);
++        return i;
+     }
+-    return dest;
+-};
+ 
+-/**
+- * Extend a parent's prototype with all properties in a properties
+- * object.
+- *
+- * @param {Object} parent
+- * @param {Object} props
+- * @returns {Object}
+- * @private
+- */
+-exports.inherit = function (parent, props) {
+-    var parentProto = typeof parent === 'function' ? parent.prototype : parent,
+-        proto = Object.create(parentProto);
+-    exports.extendAll(proto, props);
+-    return proto;
+-};
++    function mergeFromLeft(leftKey, rightKey, geom) {
++        var i = leftIndex[rightKey];
++        delete leftIndex[rightKey];
++        leftIndex[leftKey] = i;
+ 
+-/**
+- * Given an object and a number of properties as strings, return version
+- * of that object with only those properties.
+- *
+- * @param {Object} src the object
+- * @param {Array<string>} properties an array of property names chosen
+- * to appear on the resulting object.
+- * @returns {Object} object with limited properties.
+- * @example
+- * var foo = { name: 'Charlie', age: 10 };
+- * var justName = pick(foo, ['name']);
+- * // justName = { name: 'Charlie' }
+- * @private
+- */
+-exports.pick = function (src, properties) {
+-    var result = {};
+-    for (var i = 0; i < properties.length; i++) {
+-        var k = properties[i];
+-        if (k in src) {
+-            result[k] = src[k];
+-        }
++        mergedGeom[i][0].shift();
++        mergedGeom[i][0] = geom[0].concat(mergedGeom[i][0]);
++        return i;
+     }
+-    return result;
+-};
+ 
+-var id = 1;
++    function getKey(text, geom, onRight) {
++        var point = onRight ? geom[0][geom[0].length - 1] : geom[0][0];
++        return text + ':' + point.x + ':' + point.y;
++    }
+ 
+-/**
+- * Return a unique numeric id, starting at 1 and incrementing with
+- * each call.
+- *
+- * @returns {number} unique numeric id.
+- * @private
+- */
+-exports.uniqueId = function () {
+-    return id++;
+-};
++    for (k = 0; k < features.length; k++) {
++        var geom = geometries[k],
++            text = textFeatures[k];
+ 
+-/**
+- * Create a version of `fn` that is only called `time` milliseconds
+- * after its last invocation
+- *
+- * @param {Function} fn the function to be debounced
+- * @param {number} time millseconds after which the function will be invoked
+- * @returns {Function} debounced function
+- * @private
+- */
+-exports.debounce = function(fn, time) {
+-    var timer, args;
++        if (!text) {
++            add(k);
++            continue;
++        }
++
++        var leftKey = getKey(text, geom),
++            rightKey = getKey(text, geom, true);
++
++        if ((leftKey in rightIndex) && (rightKey in leftIndex) && (rightIndex[leftKey] !== leftIndex[rightKey])) {
++            // found lines with the same text adjacent to both ends of the current line, merge all three
++            var j = mergeFromLeft(leftKey, rightKey, geom);
++            var i = mergeFromRight(leftKey, rightKey, mergedGeom[j]);
+ 
+-    return function() {
+-        args = arguments;
+-        clearTimeout(timer);
++            delete leftIndex[leftKey];
++            delete rightIndex[rightKey];
+ 
+-        timer = setTimeout(function() {
+-            fn.apply(null, args);
+-        }, time);
+-    };
+-};
++            rightIndex[getKey(text, mergedGeom[i], true)] = i;
++            mergedGeom[j] = null;
+ 
+-/**
+- * Given an array of member function names as strings, replace all of them
+- * with bound versions that will always refer to `context` as `this`. This
+- * is useful for classes where otherwise event bindings would reassign
+- * `this` to the evented object or some other value: this lets you ensure
+- * the `this` value always.
+- *
+- * @param {Array<string>} fns list of member function names
+- * @param {*} context the context value
+- * @returns {undefined} changes functions in-place
+- * @example
+- * function MyClass() {
+- *   bindAll(['ontimer'], this);
+- *   this.name = 'Tom';
+- * }
+- * MyClass.prototype.ontimer = function() {
+- *   alert(this.name);
+- * };
+- * var myClass = new MyClass();
+- * setTimeout(myClass.ontimer, 100);
+- * @private
+- */
+-exports.bindAll = function(fns, context) {
+-    fns.forEach(function(fn) {
+-        context[fn] = context[fn].bind(context);
+-    });
+-};
++        } else if (leftKey in rightIndex) {
++            // found mergeable line adjacent to the start of the current line, merge
++            mergeFromRight(leftKey, rightKey, geom);
+ 
+-/**
+- * Given a class, bind all of the methods that look like handlers: that
+- * begin with _on, and bind them to the class.
+- *
+- * @param {Object} context an object with methods
+- * @private
+- */
+-exports.bindHandlers = function(context) {
+-    for (var i in context) {
+-        if (typeof context[i] === 'function' && i.indexOf('_on') === 0) {
+-            context[i] = context[i].bind(context);
++        } else if (rightKey in leftIndex) {
++            // found mergeable line adjacent to the end of the current line, merge
++            mergeFromLeft(leftKey, rightKey, geom);
++
++        } else {
++            // no adjacent lines, add as a new item
++            add(k);
++            leftIndex[leftKey] = mergedIndex - 1;
++            rightIndex[rightKey] = mergedIndex - 1;
+         }
+     }
+-};
+ 
+-/**
+- * Set the 'options' property on `obj` with properties
+- * from the `options` argument. Properties in the `options`
+- * object will override existing properties.
+- *
+- * @param {Object} obj destination object
+- * @param {Object} options object of override options
+- * @returns {Object} derived options object.
+- * @private
+- */
+-exports.setOptions = function(obj, options) {
+-    if (!obj.hasOwnProperty('options')) {
+-        obj.options = obj.options ? Object.create(obj.options) : {};
+-    }
+-    for (var i in options) {
+-        obj.options[i] = options[i];
+-    }
+-    return obj.options;
++    return {
++        features: mergedFeatures,
++        textFeatures: mergedTexts,
++        geometries: mergedGeom
++    };
+ };
+ 
+-/**
+- * Given a list of coordinates, get their center as a coordinate.
+- * @param {Array<Coordinate>} coords
+- * @returns {Coordinate} centerpoint
+- * @private
+- */
+-exports.getCoordinatesCenter = function(coords) {
+-    var minX = Infinity;
+-    var minY = Infinity;
+-    var maxX = -Infinity;
+-    var maxY = -Infinity;
++},{}],326:[function(require,module,exports){
++'use strict';
+ 
+-    for (var i = 0; i < coords.length; i++) {
+-        minX = Math.min(minX, coords[i].column);
+-        minY = Math.min(minY, coords[i].row);
+-        maxX = Math.max(maxX, coords[i].column);
+-        maxY = Math.max(maxY, coords[i].row);
+-    }
++var Point = require('point-geometry');
+ 
+-    var dx = maxX - minX;
+-    var dy = maxY - minY;
+-    var dMax = Math.max(dx, dy);
+-    return new Coordinate((minX + maxX) / 2, (minY + maxY) / 2, 0)
+-        .zoomTo(Math.floor(-Math.log(dMax) / Math.LN2));
++module.exports = {
++    getIconQuads: getIconQuads,
++    getGlyphQuads: getGlyphQuads
+ };
+ 
+-/**
+- * Determine if a string ends with a particular substring
+- * @param {string} string
+- * @param {string} suffix
+- * @returns {boolean}
+- * @private
+- */
+-exports.endsWith = function(string, suffix) {
+-    return string.indexOf(suffix, string.length - suffix.length) !== -1;
+-};
++var minScale = 0.5; // underscale by 1 zoom level
+ 
+ /**
+- * Determine if a string starts with a particular substring
+- * @param {string} string
+- * @param {string} prefix
+- * @returns {boolean}
++ * A textured quad for rendering a single icon or glyph.
++ *
++ * The zoom range the glyph can be shown is defined by minScale and maxScale.
++ *
++ * @param {Point} anchorPoint the point the symbol is anchored around
++ * @param {Point} tl The offset of the top left corner from the anchor.
++ * @param {Point} tr The offset of the top right corner from the anchor.
++ * @param {Point} bl The offset of the bottom left corner from the anchor.
++ * @param {Point} br The offset of the bottom right corner from the anchor.
++ * @param {Object} tex The texture coordinates.
++ * @param {number} angle The angle of the label at it's center, not the angle of this quad.
++ * @param {number} minScale The minimum scale, relative to the tile's intended scale, that the glyph can be shown at.
++ * @param {number} maxScale The maximum scale, relative to the tile's intended scale, that the glyph can be shown at.
++ *
++ * @class SymbolQuad
+  * @private
+  */
+-exports.startsWith = function(string, prefix) {
+-    return string.indexOf(prefix) === 0;
+-};
++function SymbolQuad(anchorPoint, tl, tr, bl, br, tex, angle, minScale, maxScale) {
++    this.anchorPoint = anchorPoint;
++    this.tl = tl;
++    this.tr = tr;
++    this.bl = bl;
++    this.br = br;
++    this.tex = tex;
++    this.angle = angle;
++    this.minScale = minScale;
++    this.maxScale = maxScale;
++}
+ 
+ /**
+- * Create an object by mapping all the values of an existing object while
+- * preserving their keys.
+- * @param {Object} input
+- * @param {Function} iterator
+- * @returns {Object}
++ * Create the quads used for rendering an icon.
++ *
++ * @param {Anchor} anchor
++ * @param {PositionedIcon} shapedIcon
++ * @param {number} boxScale A magic number for converting glyph metric units to geometry units.
++ * @param {Array<Array<Point>>} line
++ * @param {LayoutProperties} layout
++ * @param {boolean} alongLine Whether the icon should be placed along the line.
++ * @returns {Array<SymbolQuad>}
+  * @private
+  */
+-exports.mapObject = function(input, iterator, context) {
+-    var output = {};
+-    for (var key in input) {
+-        output[key] = iterator.call(context || this, input[key], key, input);
+-    }
+-    return output;
+-};
++function getIconQuads(anchor, shapedIcon, boxScale, line, layout, alongLine) {
+ 
+-/**
+- * Create an object by filtering out values of an existing object
+- * @param {Object} input
+- * @param {Function} iterator
+- * @returns {Object}
+- * @private
+- */
+-exports.filterObject = function(input, iterator, context) {
+-    var output = {};
+-    for (var key in input) {
+-        if (iterator.call(context || this, input[key], key, input)) {
+-            output[key] = input[key];
+-        }
+-    }
+-    return output;
+-};
++    var rect = shapedIcon.image.rect;
+ 
+-/**
+- * Deeply compares two object literals.
+- * @param {Object} obj1
+- * @param {Object} obj2
+- * @returns {boolean}
+- * @private
+- */
+-exports.deepEqual = function deepEqual(a, b) {
+-    if (Array.isArray(a)) {
+-        if (!Array.isArray(b) || a.length !== b.length) return false;
+-        for (var i = 0; i < a.length; i++) {
+-            if (!deepEqual(a[i], b[i])) return false;
+-        }
+-        return true;
+-    }
+-    if (typeof a === 'object') {
+-        if (!(typeof b === 'object')) return false;
+-        var keys = Object.keys(a);
+-        if (keys.length !== Object.keys(b).length) return false;
+-        for (var key in a) {
+-            if (!deepEqual(a[key], b[key])) return false;
++    var border = 1;
++    var left = shapedIcon.left - border;
++    var right = left + rect.w / shapedIcon.image.pixelRatio;
++    var top = shapedIcon.top - border;
++    var bottom = top + rect.h / shapedIcon.image.pixelRatio;
++    var tl = new Point(left, top);
++    var tr = new Point(right, top);
++    var br = new Point(right, bottom);
++    var bl = new Point(left, bottom);
++
++    var angle = layout['icon-rotate'] * Math.PI / 180;
++    if (alongLine) {
++        var prev = line[anchor.segment];
++        if (anchor.y === prev.y && anchor.x === prev.x && anchor.segment + 1 < line.length) {
++            var next = line[anchor.segment + 1];
++            angle += Math.atan2(anchor.y - next.y, anchor.x - next.x) + Math.PI;
++        } else {
++            angle += Math.atan2(anchor.y - prev.y, anchor.x - prev.x);
+         }
+-        return true;
+     }
+-    return a === b;
+-};
+ 
+-/**
+- * Deeply clones two objects.
+- * @param {Object} obj1
+- * @param {Object} obj2
+- * @returns {boolean}
+- * @private
+- */
+-exports.clone = function deepEqual(input) {
+-    if (Array.isArray(input)) {
+-        return input.map(exports.clone);
+-    } else if (typeof input === 'object') {
+-        return exports.mapObject(input, exports.clone);
+-    } else {
+-        return input;
++    if (angle) {
++        var sin = Math.sin(angle),
++            cos = Math.cos(angle),
++            matrix = [cos, -sin, sin, cos];
++
++        tl = tl.matMult(matrix);
++        tr = tr.matMult(matrix);
++        bl = bl.matMult(matrix);
++        br = br.matMult(matrix);
+     }
+-};
++
++    return [new SymbolQuad(new Point(anchor.x, anchor.y), tl, tr, bl, br, shapedIcon.image.rect, 0, minScale, Infinity)];
++}
+ 
+ /**
+- * Check if two arrays have at least one common element.
+- * @param {Array} a
+- * @param {Array} b
+- * @returns {boolean}
++ * Create the quads used for rendering a text label.
++ *
++ * @param {Anchor} anchor
++ * @param {Shaping} shaping
++ * @param {number} boxScale A magic number for converting from glyph metric units to geometry units.
++ * @param {Array<Array<Point>>} line
++ * @param {LayoutProperties} layout
++ * @param {boolean} alongLine Whether the label should be placed along the line.
++ * @returns {Array<SymbolQuad>}
+  * @private
+  */
+-exports.arraysIntersect = function(a, b) {
+-    for (var l = 0; l < a.length; l++) {
+-        if (b.indexOf(a[l]) >= 0) return true;
+-    }
+-    return false;
+-};
++function getGlyphQuads(anchor, shaping, boxScale, line, layout, alongLine) {
+ 
+-},{"../geo/coordinate":255,"unitbezier":412}],350:[function(require,module,exports){
+-'use strict';
++    var textRotate = layout['text-rotate'] * Math.PI / 180;
++    var keepUpright = layout['text-keep-upright'];
+ 
+-var VectorTileFeature = require('vector-tile').VectorTileFeature;
++    var positionedGlyphs = shaping.positionedGlyphs;
++    var quads = [];
+ 
+-module.exports = Feature;
++    for (var k = 0; k < positionedGlyphs.length; k++) {
++        var positionedGlyph = positionedGlyphs[k];
++        var glyph = positionedGlyph.glyph;
++        var rect = glyph.rect;
+ 
+-function Feature(vectorTileFeature, z, x, y) {
+-    this._vectorTileFeature = vectorTileFeature;
+-    vectorTileFeature._z = z;
+-    vectorTileFeature._x = x;
+-    vectorTileFeature._y = y;
++        if (!rect) continue;
+ 
+-    this.properties = vectorTileFeature.properties;
++        var centerX = (positionedGlyph.x + glyph.advance / 2) * boxScale;
+ 
+-    if (vectorTileFeature._id) {
+-        this.id = vectorTileFeature._id;
+-    }
+-}
++        var glyphInstances;
++        var labelMinScale = minScale;
++        if (alongLine) {
++            glyphInstances = [];
++            labelMinScale = getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, true);
++            if (keepUpright) {
++                labelMinScale = Math.min(labelMinScale, getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, false));
++            }
+ 
+-Feature.prototype = {
+-    type: "Feature",
++        } else {
++            glyphInstances = [{
++                anchorPoint: new Point(anchor.x, anchor.y),
++                offset: 0,
++                angle: 0,
++                maxScale: Infinity,
++                minScale: minScale
++            }];
++        }
+ 
+-    get geometry() {
+-        if (this._geometry === undefined) {
+-            var feature = this._vectorTileFeature;
+-            var coords = projectCoords(
+-                feature.loadGeometry(),
+-                feature.extent,
+-                feature._z, feature._x, feature._y);
++        var x1 = positionedGlyph.x + glyph.left,
++            y1 = positionedGlyph.y - glyph.top,
++            x2 = x1 + rect.w,
++            y2 = y1 + rect.h,
+ 
+-            var type = VectorTileFeature.types[feature.type];
++            otl = new Point(x1, y1),
++            otr = new Point(x2, y1),
++            obl = new Point(x1, y2),
++            obr = new Point(x2, y2);
+ 
+-            if (type === 'Point' && coords.length === 1) {
+-                coords = coords[0][0];
+-            } else if (type === 'Point') {
+-                coords = coords[0];
+-                type = 'MultiPoint';
+-            } else if (type === 'LineString' && coords.length === 1) {
+-                coords = coords[0];
+-            } else if (type === 'LineString') {
+-                type = 'MultiLineString';
+-            }
++        for (var i = 0; i < glyphInstances.length; i++) {
+ 
+-            this._geometry = {
+-                type: type,
+-                coordinates: coords
+-            };
++            var instance = glyphInstances[i],
++                tl = otl,
++                tr = otr,
++                bl = obl,
++                br = obr,
++                angle = instance.angle + textRotate;
+ 
+-            this._vectorTileFeature = null;
+-        }
+-        return this._geometry;
+-    },
++            if (angle) {
++                var sin = Math.sin(angle),
++                    cos = Math.cos(angle),
++                    matrix = [cos, -sin, sin, cos];
+ 
+-    set geometry(g) {
+-        this._geometry = g;
+-    },
++                tl = tl.matMult(matrix);
++                tr = tr.matMult(matrix);
++                bl = bl.matMult(matrix);
++                br = br.matMult(matrix);
++            }
+ 
+-    toJSON: function() {
+-        var json = {};
+-        for (var i in this) {
+-            if (i === '_geometry' || i === '_vectorTileFeature') continue;
+-            json[i] = this[i];
+-        }
+-        return json;
+-    }
+-};
++            // Prevent label from extending past the end of the line
++            var glyphMinScale = Math.max(instance.minScale, labelMinScale);
++
++            var glyphAngle = (anchor.angle + textRotate + instance.offset + 2 * Math.PI) % (2 * Math.PI);
++            quads.push(new SymbolQuad(instance.anchorPoint, tl, tr, bl, br, rect, glyphAngle, glyphMinScale, instance.maxScale));
+ 
+-function projectCoords(coords, extent, z, x, y) {
+-    var size = extent * Math.pow(2, z),
+-        x0 = extent * x,
+-        y0 = extent * y;
+-    for (var i = 0; i < coords.length; i++) {
+-        var line = coords[i];
+-        for (var j = 0; j < line.length; j++) {
+-            var p = line[j];
+-            var y2 = 180 - (p.y + y0) * 360 / size;
+-            line[j] = [
+-                (p.x + x0) * 360 / size - 180,
+-                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
+-            ];
+         }
+     }
+-    return coords;
+-}
+-
+-},{"vector-tile":413}],351:[function(require,module,exports){
+-// (c) Dean McNamee <dean@gmail.com>, 2012.
+-//
+-// https://github.com/deanm/css-color-parser-js
+-//
+-// Permission is hereby granted, free of charge, to any person obtaining a copy
+-// of this software and associated documentation files (the "Software"), to
+-// deal in the Software without restriction, including without limitation the
+-// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+-// sell copies of the Software, and to permit persons to whom the Software is
+-// furnished to do so, subject to the following conditions:
+-//
+-// The above copyright notice and this permission notice shall be included in
+-// all copies or substantial portions of the Software.
+-//
+-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+-// IN THE SOFTWARE.
+-
+-// http://www.w3.org/TR/css3-color/
+-var kCSSColorTable = {
+-  "transparent": [0,0,0,0], "aliceblue": [240,248,255,1],
+-  "antiquewhite": [250,235,215,1], "aqua": [0,255,255,1],
+-  "aquamarine": [127,255,212,1], "azure": [240,255,255,1],
+-  "beige": [245,245,220,1], "bisque": [255,228,196,1],
+-  "black": [0,0,0,1], "blanchedalmond": [255,235,205,1],
+-  "blue": [0,0,255,1], "blueviolet": [138,43,226,1],
+-  "brown": [165,42,42,1], "burlywood": [222,184,135,1],
+-  "cadetblue": [95,158,160,1], "chartreuse": [127,255,0,1],
+-  "chocolate": [210,105,30,1], "coral": [255,127,80,1],
+-  "cornflowerblue": [100,149,237,1], "cornsilk": [255,248,220,1],
+-  "crimson": [220,20,60,1], "cyan": [0,255,255,1],
+-  "darkblue": [0,0,139,1], "darkcyan": [0,139,139,1],
+-  "darkgoldenrod": [184,134,11,1], "darkgray": [169,169,169,1],
+-  "darkgreen": [0,100,0,1], "darkgrey": [169,169,169,1],
+-  "darkkhaki": [189,183,107,1], "darkmagenta": [139,0,139,1],
+-  "darkolivegreen": [85,107,47,1], "darkorange": [255,140,0,1],
+-  "darkorchid": [153,50,204,1], "darkred": [139,0,0,1],
+-  "darksalmon": [233,150,122,1], "darkseagreen": [143,188,143,1],
+-  "darkslateblue": [72,61,139,1], "darkslategray": [47,79,79,1],
+-  "darkslategrey": [47,79,79,1], "darkturquoise": [0,206,209,1],
+-  "darkviolet": [148,0,211,1], "deeppink": [255,20,147,1],
+-  "deepskyblue": [0,191,255,1], "dimgray": [105,105,105,1],
+-  "dimgrey": [105,105,105,1], "dodgerblue": [30,144,255,1],
+-  "firebrick": [178,34,34,1], "floralwhite": [255,250,240,1],
+-  "forestgreen": [34,139,34,1], "fuchsia": [255,0,255,1],
+-  "gainsboro": [220,220,220,1], "ghostwhite": [248,248,255,1],
+-  "gold": [255,215,0,1], "goldenrod": [218,165,32,1],
+-  "gray": [128,128,128,1], "green": [0,128,0,1],
+-  "greenyellow": [173,255,47,1], "grey": [128,128,128,1],
+-  "honeydew": [240,255,240,1], "hotpink": [255,105,180,1],
+-  "indianred": [205,92,92,1], "indigo": [75,0,130,1],
+-  "ivory": [255,255,240,1], "khaki": [240,230,140,1],
+-  "lavender": [230,230,250,1], "lavenderblush": [255,240,245,1],
+-  "lawngreen": [124,252,0,1], "lemonchiffon": [255,250,205,1],
+-  "lightblue": [173,216,230,1], "lightcoral": [240,128,128,1],
+-  "lightcyan": [224,255,255,1], "lightgoldenrodyellow": [250,250,210,1],
+-  "lightgray": [211,211,211,1], "lightgreen": [144,238,144,1],
+-  "lightgrey": [211,211,211,1], "lightpink": [255,182,193,1],
+-  "lightsalmon": [255,160,122,1], "lightseagreen": [32,178,170,1],
+-  "lightskyblue": [135,206,250,1], "lightslategray": [119,136,153,1],
+-  "lightslategrey": [119,136,153,1], "lightsteelblue": [176,196,222,1],
+-  "lightyellow": [255,255,224,1], "lime": [0,255,0,1],
+-  "limegreen": [50,205,50,1], "linen": [250,240,230,1],
+-  "magenta": [255,0,255,1], "maroon": [128,0,0,1],
+-  "mediumaquamarine": [102,205,170,1], "mediumblue": [0,0,205,1],
+-  "mediumorchid": [186,85,211,1], "mediumpurple": [147,112,219,1],
+-  "mediumseagreen": [60,179,113,1], "mediumslateblue": [123,104,238,1],
+-  "mediumspringgreen": [0,250,154,1], "mediumturquoise": [72,209,204,1],
+-  "mediumvioletred": [199,21,133,1], "midnightblue": [25,25,112,1],
+-  "mintcream": [245,255,250,1], "mistyrose": [255,228,225,1],
+-  "moccasin": [255,228,181,1], "navajowhite": [255,222,173,1],
+-  "navy": [0,0,128,1], "oldlace": [253,245,230,1],
+-  "olive": [128,128,0,1], "olivedrab": [107,142,35,1],
+-  "orange": [255,165,0,1], "orangered": [255,69,0,1],
+-  "orchid": [218,112,214,1], "palegoldenrod": [238,232,170,1],
+-  "palegreen": [152,251,152,1], "paleturquoise": [175,238,238,1],
+-  "palevioletred": [219,112,147,1], "papayawhip": [255,239,213,1],
+-  "peachpuff": [255,218,185,1], "peru": [205,133,63,1],
+-  "pink": [255,192,203,1], "plum": [221,160,221,1],
+-  "powderblue": [176,224,230,1], "purple": [128,0,128,1],
+-  "red": [255,0,0,1], "rosybrown": [188,143,143,1],
+-  "royalblue": [65,105,225,1], "saddlebrown": [139,69,19,1],
+-  "salmon": [250,128,114,1], "sandybrown": [244,164,96,1],
+-  "seagreen": [46,139,87,1], "seashell": [255,245,238,1],
+-  "sienna": [160,82,45,1], "silver": [192,192,192,1],
+-  "skyblue": [135,206,235,1], "slateblue": [106,90,205,1],
+-  "slategray": [112,128,144,1], "slategrey": [112,128,144,1],
+-  "snow": [255,250,250,1], "springgreen": [0,255,127,1],
+-  "steelblue": [70,130,180,1], "tan": [210,180,140,1],
+-  "teal": [0,128,128,1], "thistle": [216,191,216,1],
+-  "tomato": [255,99,71,1], "turquoise": [64,224,208,1],
+-  "violet": [238,130,238,1], "wheat": [245,222,179,1],
+-  "white": [255,255,255,1], "whitesmoke": [245,245,245,1],
+-  "yellow": [255,255,0,1], "yellowgreen": [154,205,50,1]}
+ 
+-function clamp_css_byte(i) {  // Clamp to integer 0 .. 255.
+-  i = Math.round(i);  // Seems to be what Chrome does (vs truncation).
+-  return i < 0 ? 0 : i > 255 ? 255 : i;
++    return quads;
+ }
+ 
+-function clamp_css_float(f) {  // Clamp to float 0.0 .. 1.0.
+-  return f < 0 ? 0 : f > 1 ? 1 : f;
+-}
++/**
++ * We can only render glyph quads that slide along a straight line. To draw
++ * curved lines we need an instance of a glyph for each segment it appears on.
++ * This creates all the instances of a glyph that are necessary to render a label.
++ *
++ * We need a
++ * @param {Array<Object>} glyphInstances An empty array that glyphInstances are added to.
++ * @param {Anchor} anchor
++ * @param {number} offset The glyph's offset from the center of the label.
++ * @param {Array<Point>} line
++ * @param {number} segment The index of the segment of the line on which the anchor exists.
++ * @param {boolean} forward If true get the glyphs that come later on the line, otherwise get the glyphs that come earlier.
++ *
++ * @returns {Array<Object>} glyphInstances
++ * @private
++ */
++function getSegmentGlyphs(glyphs, anchor, offset, line, segment, forward) {
++    var upsideDown = !forward;
+ 
+-function parse_css_int(str) {  // int or percentage.
+-  if (str[str.length - 1] === '%')
+-    return clamp_css_byte(parseFloat(str) / 100 * 255);
+-  return clamp_css_byte(parseInt(str));
+-}
++    if (offset < 0) forward = !forward;
+ 
+-function parse_css_float(str) {  // float or percentage.
+-  if (str[str.length - 1] === '%')
+-    return clamp_css_float(parseFloat(str) / 100);
+-  return clamp_css_float(parseFloat(str));
+-}
++    if (forward) segment++;
+ 
+-function css_hue_to_rgb(m1, m2, h) {
+-  if (h < 0) h += 1;
+-  else if (h > 1) h -= 1;
++    var newAnchorPoint = new Point(anchor.x, anchor.y);
++    var end = line[segment];
++    var prevScale = Infinity;
+ 
+-  if (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
+-  if (h * 2 < 1) return m2;
+-  if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6;
+-  return m1;
+-}
++    offset = Math.abs(offset);
+ 
+-function parseCSSColor(css_str) {
+-  // Remove all whitespace, not compliant, but should just be more accepting.
+-  var str = css_str.replace(/ /g, '').toLowerCase();
++    var placementScale = minScale;
+ 
+-  // Color keywords (and transparent) lookup.
+-  if (str in kCSSColorTable) return kCSSColorTable[str].slice();  // dup.
++    while (true) {
++        var distance = newAnchorPoint.dist(end);
++        var scale = offset / distance;
+ 
+-  // #abc and #abc123 syntax.
+-  if (str[0] === '#') {
+-    if (str.length === 4) {
+-      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
+-      if (!(iv >= 0 && iv <= 0xfff)) return null;  // Covers NaN.
+-      return [((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8),
+-              (iv & 0xf0) | ((iv & 0xf0) >> 4),
+-              (iv & 0xf) | ((iv & 0xf) << 4),
+-              1];
+-    } else if (str.length === 7) {
+-      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
+-      if (!(iv >= 0 && iv <= 0xffffff)) return null;  // Covers NaN.
+-      return [(iv & 0xff0000) >> 16,
+-              (iv & 0xff00) >> 8,
+-              iv & 0xff,
+-              1];
+-    }
++        // Get the angle of the line segment
++        var angle = Math.atan2(end.y - newAnchorPoint.y, end.x - newAnchorPoint.x);
++        if (!forward) angle += Math.PI;
++        if (upsideDown) angle += Math.PI;
+ 
+-    return null;
+-  }
++        glyphs.push({
++            anchorPoint: newAnchorPoint,
++            offset: upsideDown ? Math.PI : 0,
++            minScale: scale,
++            maxScale: prevScale,
++            angle: (angle + 2 * Math.PI) % (2 * Math.PI)
++        });
+ 
+-  var op = str.indexOf('('), ep = str.indexOf(')');
+-  if (op !== -1 && ep + 1 === str.length) {
+-    var fname = str.substr(0, op);
+-    var params = str.substr(op+1, ep-(op+1)).split(',');
+-    var alpha = 1;  // To allow case fallthrough.
+-    switch (fname) {
+-      case 'rgba':
+-        if (params.length !== 4) return null;
+-        alpha = parse_css_float(params.pop());
+-        // Fall through.
+-      case 'rgb':
+-        if (params.length !== 3) return null;
+-        return [parse_css_int(params[0]),
+-                parse_css_int(params[1]),
+-                parse_css_int(params[2]),
+-                alpha];
+-      case 'hsla':
+-        if (params.length !== 4) return null;
+-        alpha = parse_css_float(params.pop());
+-        // Fall through.
+-      case 'hsl':
+-        if (params.length !== 3) return null;
+-        var h = (((parseFloat(params[0]) % 360) + 360) % 360) / 360;  // 0 .. 1
+-        // NOTE(deanm): According to the CSS spec s/l should only be
+-        // percentages, but we don't bother and let float or percentage.
+-        var s = parse_css_float(params[1]);
+-        var l = parse_css_float(params[2]);
+-        var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
+-        var m1 = l * 2 - m2;
+-        return [clamp_css_byte(css_hue_to_rgb(m1, m2, h+1/3) * 255),
+-                clamp_css_byte(css_hue_to_rgb(m1, m2, h) * 255),
+-                clamp_css_byte(css_hue_to_rgb(m1, m2, h-1/3) * 255),
+-                alpha];
+-      default:
+-        return null;
++        if (scale <= placementScale) break;
++
++        newAnchorPoint = end;
++
++        // skip duplicate nodes
++        while (newAnchorPoint.equals(end)) {
++            segment += forward ? 1 : -1;
++            end = line[segment];
++            if (!end) {
++                return scale;
++            }
++        }
++
++        var unit = end.sub(newAnchorPoint)._unit();
++        newAnchorPoint = newAnchorPoint.sub(unit._mult(distance));
++
++        prevScale = scale;
+     }
+-  }
+ 
+-  return null;
++    return placementScale;
+ }
+ 
+-try { exports.parseCSSColor = parseCSSColor } catch(e) { }
+-
+-},{}],352:[function(require,module,exports){
++},{"point-geometry":400}],327:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = createFilter;
++var resolveTokens = require('../util/token');
+ 
+-var types = ['Unknown', 'Point', 'LineString', 'Polygon'];
++module.exports = resolveText;
+ 
+ /**
+- * Given a filter expressed as nested arrays, return a new function
+- * that evaluates whether a given feature (with a .properties or .tags property)
+- * passes its test.
+- *
+- * @param {Array} filter mapbox gl filter
+- * @returns {Function} filter-evaluating function
++ * For an array of features determine what glyphs need to be loaded
++ * and apply any text preprocessing. The remaining users of text should
++ * use the `textFeatures` key returned by this function rather than accessing
++ * feature text directly.
++ * @private
+  */
+-function createFilter(filter) {
+-    return new Function('f', 'var p = (f && f.properties || {}); return ' + compile(filter));
+-}
++function resolveText(features, layoutProperties, codepoints) {
++    var textFeatures = [];
+ 
+-function compile(filter) {
+-    if (!filter) return 'true';
+-    var op = filter[0];
+-    if (filter.length <= 1) return op === 'any' ? 'false' : 'true';
+-    var str =
+-        op === '==' ? compileComparisonOp(filter[1], filter[2], '===', false) :
+-        op === '!=' ? compileComparisonOp(filter[1], filter[2], '!==', false) :
+-        op === '<' ||
+-        op === '>' ||
+-        op === '<=' ||
+-        op === '>=' ? compileComparisonOp(filter[1], filter[2], op, true) :
+-        op === 'any' ? compileLogicalOp(filter.slice(1), '||') :
+-        op === 'all' ? compileLogicalOp(filter.slice(1), '&&') :
+-        op === 'none' ? compileNegation(compileLogicalOp(filter.slice(1), '||')) :
+-        op === 'in' ? compileInOp(filter[1], filter.slice(2)) :
+-        op === '!in' ? compileNegation(compileInOp(filter[1], filter.slice(2))) :
+-        op === 'has' ? compileHasOp(filter[1]) :
+-        op === '!has' ? compileNegation(compileHasOp([filter[1]])) :
+-        'true';
+-    return '(' + str + ')';
+-}
++    for (var i = 0, fl = features.length; i < fl; i++) {
++        var text = resolveTokens(features[i].properties, layoutProperties['text-field']);
++        if (!text) {
++            textFeatures[i] = null;
++            continue;
++        }
++        text = text.toString();
+ 
+-function compilePropertyReference(property) {
+-    return property === '$type' ? 'f.type' : 'p[' + JSON.stringify(property) + ']';
+-}
++        var transform = layoutProperties['text-transform'];
++        if (transform === 'uppercase') {
++            text = text.toLocaleUpperCase();
++        } else if (transform === 'lowercase') {
++            text = text.toLocaleLowerCase();
++        }
+ 
+-function compileComparisonOp(property, value, op, checkType) {
+-    var left = compilePropertyReference(property);
+-    var right = property === '$type' ? types.indexOf(value) : JSON.stringify(value);
+-    return (checkType ? 'typeof ' + left + '=== typeof ' + right + '&&' : '') + left + op + right;
+-}
++        for (var j = 0; j < text.length; j++) {
++            codepoints[text.charCodeAt(j)] = true;
++        }
+ 
+-function compileLogicalOp(expressions, op) {
+-    return expressions.map(compile).join(op);
++        // Track indexes of features with text.
++        textFeatures[i] = text;
++    }
++
++    return textFeatures;
+ }
+ 
+-function compileInOp(property, values) {
+-    if (property === '$type') values = values.map(function(value) { return types.indexOf(value); });
+-    var left = JSON.stringify(values.sort(compare));
+-    var right = compilePropertyReference(property);
++},{"../util/token":361}],328:[function(require,module,exports){
++'use strict';
+ 
+-    if (values.length <= 200) return left + '.indexOf(' + right + ') !== -1';
++module.exports = {
++    shapeText: shapeText,
++    shapeIcon: shapeIcon
++};
+ 
+-    return 'function(v, a, i, j) {' +
+-        'while (i <= j) { var m = (i + j) >> 1;' +
+-        '    if (a[m] === v) return true; if (a[m] > v) j = m - 1; else i = m + 1;' +
+-        '}' +
+-    'return false; }(' + right + ', ' + left + ',0,' + (values.length - 1) + ')';
+-}
+ 
+-function compileHasOp(property) {
+-    return JSON.stringify(property) + ' in p';
++// The position of a glyph relative to the text's anchor point.
++function PositionedGlyph(codePoint, x, y, glyph) {
++    this.codePoint = codePoint;
++    this.x = x;
++    this.y = y;
++    this.glyph = glyph;
+ }
+ 
+-function compileNegation(expression) {
+-    return '!(' + expression + ')';
++// A collection of positioned glyphs and some metadata
++function Shaping(positionedGlyphs, text, top, bottom, left, right) {
++    this.positionedGlyphs = positionedGlyphs;
++    this.text = text;
++    this.top = top;
++    this.bottom = bottom;
++    this.left = left;
++    this.right = right;
+ }
+ 
+-// Comparison function to sort numbers and strings
+-function compare(a, b) {
+-    return a < b ? -1 : a > b ? 1 : 0;
+-}
++function shapeText(text, glyphs, maxWidth, lineHeight, horizontalAlign, verticalAlign, justify, spacing, translate) {
+ 
+-},{}],353:[function(require,module,exports){
+-var geojsonArea = require('geojson-area');
++    var positionedGlyphs = [];
++    var shaping = new Shaping(positionedGlyphs, text, translate[1], translate[1], translate[0], translate[0]);
+ 
+-module.exports = rewind;
++    // the y offset *should* be part of the font metadata
++    var yOffset = -17;
+ 
+-function rewind(gj, outer) {
+-    switch ((gj && gj.type) || null) {
+-        case 'FeatureCollection':
+-            gj.features = gj.features.map(curryOuter(rewind, outer));
+-            return gj;
+-        case 'Feature':
+-            gj.geometry = rewind(gj.geometry, outer);
+-            return gj;
+-        case 'Polygon':
+-        case 'MultiPolygon':
+-            return correct(gj, outer);
+-        default:
+-            return gj;
++    var x = 0;
++    var y = yOffset;
++
++    for (var i = 0; i < text.length; i++) {
++        var codePoint = text.charCodeAt(i);
++        var glyph = glyphs[codePoint];
++
++        if (!glyph) continue;
++
++        positionedGlyphs.push(new PositionedGlyph(codePoint, x, y, glyph));
++        x += glyph.advance + spacing;
+     }
++
++    if (!positionedGlyphs.length) return false;
++
++    linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate);
++
++    return shaping;
+ }
+ 
+-function curryOuter(a, b) {
+-    return function(_) { return a(_, b); };
++var invisible = {
++    0x20:   true, // space
++    0x200b: true  // zero-width space
++};
++
++var breakable = {
++    0x20:   true, // space
++    0x26:   true, // ampersand
++    0x2b:   true, // plus sign
++    0x2d:   true, // hyphen-minus
++    0x2f:   true, // solidus
++    0xad:   true, // soft hyphen
++    0xb7:   true, // middle dot
++    0x200b: true, // zero-width space
++    0x2010: true, // hyphen
++    0x2013: true  // en dash
++};
++
++function linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate) {
++    var lastSafeBreak = null;
++
++    var lengthBeforeCurrentLine = 0;
++    var lineStartIndex = 0;
++    var line = 0;
++
++    var maxLineLength = 0;
++
++    var positionedGlyphs = shaping.positionedGlyphs;
++
++    if (maxWidth) {
++        for (var i = 0; i < positionedGlyphs.length; i++) {
++            var positionedGlyph = positionedGlyphs[i];
++
++            positionedGlyph.x -= lengthBeforeCurrentLine;
++            positionedGlyph.y += lineHeight * line;
++
++            if (positionedGlyph.x > maxWidth && lastSafeBreak !== null) {
++
++                var lineLength = positionedGlyphs[lastSafeBreak + 1].x;
++                maxLineLength = Math.max(lineLength, maxLineLength);
++
++                for (var k = lastSafeBreak + 1; k <= i; k++) {
++                    positionedGlyphs[k].y += lineHeight;
++                    positionedGlyphs[k].x -= lineLength;
++                }
++
++                if (justify) {
++                    // Collapse invisible characters.
++                    var lineEnd = lastSafeBreak;
++                    if (invisible[positionedGlyphs[lastSafeBreak].codePoint]) {
++                        lineEnd--;
++                    }
++
++                    justifyLine(positionedGlyphs, glyphs, lineStartIndex, lineEnd, justify);
++                }
++
++                lineStartIndex = lastSafeBreak + 1;
++                lastSafeBreak = null;
++                lengthBeforeCurrentLine += lineLength;
++                line++;
++            }
++
++            if (breakable[positionedGlyph.codePoint]) {
++                lastSafeBreak = i;
++            }
++        }
++    }
++
++    var lastPositionedGlyph = positionedGlyphs[positionedGlyphs.length - 1];
++    var lastLineLength = lastPositionedGlyph.x + glyphs[lastPositionedGlyph.codePoint].advance;
++    maxLineLength = Math.max(maxLineLength, lastLineLength);
++
++    var height = (line + 1) * lineHeight;
++
++    justifyLine(positionedGlyphs, glyphs, lineStartIndex, positionedGlyphs.length - 1, justify);
++    align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate);
++
++    // Calculate the bounding box
++    shaping.top += -verticalAlign * height;
++    shaping.bottom = shaping.top + height;
++    shaping.left += -horizontalAlign * maxLineLength;
++    shaping.right = shaping.left + maxLineLength;
+ }
+ 
+-function correct(_, outer) {
+-    if (_.type === 'Polygon') {
+-        _.coordinates = correctRings(_.coordinates, outer);
+-    } else if (_.type === 'MultiPolygon') {
+-        _.coordinates = _.coordinates.map(curryOuter(correctRings, outer));
++function justifyLine(positionedGlyphs, glyphs, start, end, justify) {
++    var lastAdvance = glyphs[positionedGlyphs[end].codePoint].advance;
++    var lineIndent = (positionedGlyphs[end].x + lastAdvance) * justify;
++
++    for (var j = start; j <= end; j++) {
++        positionedGlyphs[j].x -= lineIndent;
+     }
+-    return _;
++
+ }
+ 
+-function correctRings(_, outer) {
+-    outer = !!outer;
+-    _[0] = wind(_[0], !outer);
+-    for (var i = 1; i < _.length; i++) {
+-        _[i] = wind(_[i], outer);
++function align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate) {
++    var shiftX = (justify - horizontalAlign) * maxLineLength + translate[0];
++    var shiftY = (-verticalAlign * (line + 1) + 0.5) * lineHeight + translate[1];
++
++    for (var j = 0; j < positionedGlyphs.length; j++) {
++        positionedGlyphs[j].x += shiftX;
++        positionedGlyphs[j].y += shiftY;
+     }
+-    return _;
+ }
+ 
+-function wind(_, dir) {
+-    return cw(_) === dir ? _ : _.reverse();
++
++function shapeIcon(image, layout) {
++    if (!image || !image.rect) return null;
++
++    var dx = layout['icon-offset'][0];
++    var dy = layout['icon-offset'][1];
++    var x1 = dx - image.width / 2;
++    var x2 = x1 + image.width;
++    var y1 = dy - image.height / 2;
++    var y2 = y1 + image.height;
++
++    return new PositionedIcon(image, y1, y2, x1, x2);
+ }
+ 
+-function cw(_) {
+-    return geojsonArea.ring(_) >= 0;
++function PositionedIcon(image, top, bottom, left, right) {
++    this.image = image;
++    this.top = top;
++    this.bottom = bottom;
++    this.left = left;
++    this.right = right;
+ }
+ 
+-},{"geojson-area":354}],354:[function(require,module,exports){
+-var wgs84 = require('wgs84');
++},{}],329:[function(require,module,exports){
++'use strict';
+ 
+-module.exports.geometry = geometry;
+-module.exports.ring = ringArea;
++var ShelfPack = require('shelf-pack');
++var browser = require('../util/browser');
+ 
+-function geometry(_) {
+-    if (_.type === 'Polygon') return polygonArea(_.coordinates);
+-    else if (_.type === 'MultiPolygon') {
+-        var area = 0;
+-        for (var i = 0; i < _.coordinates.length; i++) {
+-            area += polygonArea(_.coordinates[i]);
++module.exports = SpriteAtlas;
++function SpriteAtlas(width, height) {
++    this.width = width;
++    this.height = height;
++
++    this.bin = new ShelfPack(width, height);
++    this.images = {};
++    this.data = false;
++    this.texture = 0; // WebGL ID
++    this.filter = 0; // WebGL ID
++    this.pixelRatio = 1;
++    this.dirty = true;
++}
++
++function copyBitmap(src, srcStride, srcX, srcY, dst, dstStride, dstX, dstY, width, height, wrap) {
++    var srcI = srcY * srcStride + srcX;
++    var dstI = dstY * dstStride + dstX;
++    var x, y;
++
++    if (wrap) {
++        // add 1 pixel wrapped padding on each side of the image
++        dstI -= dstStride;
++        for (y = -1; y <= height; y++, srcI = ((y + height) % height + srcY) * srcStride + srcX, dstI += dstStride) {
++            for (x = -1; x <= width; x++) {
++                dst[dstI + x] = src[srcI + ((x + width) % width)];
++            }
+         }
+-        return area;
++
+     } else {
+-        return null;
++        for (y = 0; y < height; y++, srcI += srcStride, dstI += dstStride) {
++            for (x = 0; x < width; x++) {
++                dst[dstI + x] = src[srcI + x];
++            }
++        }
+     }
+ }
+ 
+-function polygonArea(coords) {
+-    var area = 0;
+-    if (coords && coords.length > 0) {
+-        area += Math.abs(ringArea(coords[0]));
+-        for (var i = 1; i < coords.length; i++) {
+-            area -= Math.abs(ringArea(coords[i]));
+-        }
++SpriteAtlas.prototype.allocateImage = function(pixelWidth, pixelHeight) {
++
++    pixelWidth = pixelWidth / this.pixelRatio;
++    pixelHeight = pixelHeight / this.pixelRatio;
++
++    // Increase to next number divisible by 4, but at least 1.
++    // This is so we can scale down the texture coordinates and pack them
++    // into 2 bytes rather than 4 bytes.
++    // Pad icons to prevent them from polluting neighbours during linear interpolation
++    var padding = 2;
++    var packWidth = pixelWidth + padding + (4 - (pixelWidth + padding) % 4);
++    var packHeight = pixelHeight + padding + (4 - (pixelHeight + padding) % 4);// + 4;
++
++    var rect = this.bin.packOne(packWidth, packHeight);
++    if (!rect) {
++        console.warn('SpriteAtlas out of space.');
++        return null;
+     }
+-    return area;
+-}
+ 
+-/**
+- * Calculate the approximate area of the polygon were it projected onto
+- *     the earth.  Note that this area will be positive if ring is oriented
+- *     clockwise, otherwise it will be negative.
+- *
+- * Reference:
+- * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
+- *     Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
+- *     Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
+- *
+- * Returns:
+- * {float} The approximate signed geodesic area of the polygon in square
+- *     meters.
+- */
++    return rect;
++};
++
++SpriteAtlas.prototype.getImage = function(name, wrap) {
++    if (this.images[name]) {
++        return this.images[name];
++    }
+ 
+-function ringArea(coords) {
+-    var area = 0;
++    if (!this.sprite) {
++        return null;
++    }
+ 
+-    if (coords.length > 2) {
+-        var p1, p2;
+-        for (var i = 0; i < coords.length - 1; i++) {
+-            p1 = coords[i];
+-            p2 = coords[i + 1];
+-            area += rad(p2[0] - p1[0]) * (2 + Math.sin(rad(p1[1])) + Math.sin(rad(p2[1])));
+-        }
++    var pos = this.sprite.getSpritePosition(name);
++    if (!pos.width || !pos.height) {
++        return null;
++    }
+ 
+-        area = area * wgs84.RADIUS * wgs84.RADIUS / 2;
++    var rect = this.allocateImage(pos.width, pos.height);
++    if (!rect) {
++        return null;
+     }
+ 
+-    return area;
+-}
++    var image = new AtlasImage(rect, pos.width / pos.pixelRatio, pos.height / pos.pixelRatio, pos.sdf, pos.pixelRatio / this.pixelRatio);
++    this.images[name] = image;
+ 
+-function rad(_) {
+-    return _ * Math.PI / 180;
+-}
++    this.copy(rect, pos, wrap);
+ 
+-},{"wgs84":355}],355:[function(require,module,exports){
+-module.exports.RADIUS = 6378137;
+-module.exports.FLATTENING = 1/298.257223563;
+-module.exports.POLAR_RADIUS = 6356752.3142;
++    return image;
++};
+ 
+-},{}],356:[function(require,module,exports){
+-'use strict';
+ 
+-module.exports = clip;
++// Return position of a repeating fill pattern.
++SpriteAtlas.prototype.getPosition = function(name, repeating) {
++    var image = this.getImage(name, repeating);
++    var rect = image && image.rect;
+ 
+-/* clip features between two axis-parallel lines:
+- *     |        |
+- *  ___|___     |     /
+- * /   |   \____|____/
+- *     |        |
+- */
++    if (!rect) {
++        return null;
++    }
+ 
+-function clip(features, scale, k1, k2, axis, intersect, minAll, maxAll) {
++    var width = image.width * image.pixelRatio;
++    var height = image.height * image.pixelRatio;
++    var padding = 1;
+ 
+-    k1 /= scale;
+-    k2 /= scale;
++    return {
++        size: [image.width, image.height],
++        tl: [(rect.x + padding)         / this.width, (rect.y + padding)          / this.height],
++        br: [(rect.x + padding + width) / this.width, (rect.y + padding + height) / this.height]
++    };
++};
+ 
+-    if (minAll >= k1 && maxAll <= k2) return features; // trivial accept
+-    else if (minAll > k2 || maxAll < k1) return null; // trivial reject
+ 
+-    var clipped = [];
++SpriteAtlas.prototype.allocate = function() {
++    if (!this.data) {
++        var w = Math.floor(this.width * this.pixelRatio);
++        var h = Math.floor(this.height * this.pixelRatio);
++        this.data = new Uint32Array(w * h);
++        for (var i = 0; i < this.data.length; i++) {
++            this.data[i] = 0;
++        }
++    }
++};
+ 
+-    for (var i = 0; i < features.length; i++) {
+ 
+-        var feature = features[i],
+-            geometry = feature.geometry,
+-            type = feature.type,
+-            min, max;
++SpriteAtlas.prototype.copy = function(dst, src, wrap) {
++    if (!this.sprite.img.data) return;
++    var srcImg = new Uint32Array(this.sprite.img.data.buffer);
+ 
+-        min = feature.min[axis];
+-        max = feature.max[axis];
++    this.allocate();
++    var dstImg = this.data;
+ 
+-        if (min >= k1 && max <= k2) { // trivial accept
+-            clipped.push(feature);
+-            continue;
+-        } else if (min > k2 || max < k1) continue; // trivial reject
++    var padding = 1;
+ 
+-        var slices = type === 1 ?
+-                clipPoints(geometry, k1, k2, axis) :
+-                clipGeometry(geometry, k1, k2, axis, intersect, type === 3);
++    copyBitmap(
++        /* source buffer */  srcImg,
++        /* source stride */  this.sprite.img.width,
++        /* source x */       src.x,
++        /* source y */       src.y,
++        /* dest buffer */    dstImg,
++        /* dest stride */    this.width * this.pixelRatio,
++        /* dest x */         (dst.x + padding) * this.pixelRatio,
++        /* dest y */         (dst.y + padding) * this.pixelRatio,
++        /* icon dimension */ src.width,
++        /* icon dimension */ src.height,
++        /* wrap */ wrap
++    );
+ 
+-        if (slices.length) {
+-            // if a feature got clipped, it will likely get clipped on the next zoom level as well,
+-            // so there's no need to recalculate bboxes
+-            clipped.push({
+-                geometry: slices,
+-                type: type,
+-                tags: features[i].tags || null,
+-                min: feature.min,
+-                max: feature.max
+-            });
++    this.dirty = true;
++};
++
++SpriteAtlas.prototype.setSprite = function(sprite) {
++    if (sprite) {
++        this.pixelRatio = browser.devicePixelRatio > 1 ? 2 : 1;
++
++        if (this.canvas) {
++            this.canvas.width = this.width * this.pixelRatio;
++            this.canvas.height = this.height * this.pixelRatio;
+         }
+     }
++    this.sprite = sprite;
++};
+ 
+-    return clipped.length ? clipped : null;
+-}
++SpriteAtlas.prototype.addIcons = function(icons, callback) {
++    for (var i = 0; i < icons.length; i++) {
++        this.getImage(icons[i]);
++    }
+ 
+-function clipPoints(geometry, k1, k2, axis) {
+-    var slice = [];
++    callback(null, this.images);
++};
+ 
+-    for (var i = 0; i < geometry.length; i++) {
+-        var a = geometry[i],
+-            ak = a[axis];
++SpriteAtlas.prototype.bind = function(gl, linear) {
++    var first = false;
++    if (!this.texture) {
++        this.texture = gl.createTexture();
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
++        first = true;
++    } else {
++        gl.bindTexture(gl.TEXTURE_2D, this.texture);
++    }
+ 
+-        if (ak >= k1 && ak <= k2) slice.push(a);
++    var filterVal = linear ? gl.LINEAR : gl.NEAREST;
++    if (filterVal !== this.filter) {
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, filterVal);
++        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, filterVal);
++        this.filter = filterVal;
+     }
+-    return slice;
+-}
+ 
+-function clipGeometry(geometry, k1, k2, axis, intersect, closed) {
++    if (this.dirty) {
++        this.allocate();
+ 
+-    var slices = [];
++        if (first) {
++            gl.texImage2D(
++                gl.TEXTURE_2D, // enum target
++                0, // ind level
++                gl.RGBA, // ind internalformat
++                this.width * this.pixelRatio, // GLsizei width
++                this.height * this.pixelRatio, // GLsizei height
++                0, // ind border
++                gl.RGBA, // enum format
++                gl.UNSIGNED_BYTE, // enum type
++                new Uint8Array(this.data.buffer) // Object data
++            );
++        } else {
++            gl.texSubImage2D(
++                gl.TEXTURE_2D, // enum target
++                0, // int level
++                0, // int xoffset
++                0, // int yoffset
++                this.width * this.pixelRatio, // long width
++                this.height * this.pixelRatio, // long height
++                gl.RGBA, // enum format
++                gl.UNSIGNED_BYTE, // enum type
++                new Uint8Array(this.data.buffer) // Object pixels
++            );
++        }
+ 
+-    for (var i = 0; i < geometry.length; i++) {
++        this.dirty = false;
++    }
++};
+ 
+-        var ak = 0,
+-            bk = 0,
+-            b = null,
+-            points = geometry[i],
+-            area = points.area,
+-            dist = points.dist,
+-            len = points.length,
+-            a, j, last;
++function AtlasImage(rect, width, height, sdf, pixelRatio) {
++    this.rect = rect;
++    this.width = width;
++    this.height = height;
++    this.sdf = sdf;
++    this.pixelRatio = pixelRatio;
++}
+ 
+-        var slice = [];
++},{"../util/browser":348,"shelf-pack":424}],330:[function(require,module,exports){
++'use strict';
+ 
+-        for (j = 0; j < len - 1; j++) {
+-            a = b || points[j];
+-            b = points[j + 1];
+-            ak = bk || a[axis];
+-            bk = b[axis];
++var util = require('../util/util');
++var interpolate = require('../util/interpolate');
++var browser = require('../util/browser');
++var LngLat = require('../geo/lng_lat');
++var LngLatBounds = require('../geo/lng_lat_bounds');
++var Point = require('point-geometry');
+ 
+-            if (ak < k1) {
++/**
++ * Options common to Map#jumpTo, Map#easeTo, and Map#flyTo, controlling the destination
++ * location, zoom level, bearing and pitch. All properties are options; unspecified
++ * options will default to the current value for that property.
++ *
++ * @typedef {Object} CameraOptions
++ * @property {LngLat} center Map center
++ * @property {number} zoom Map zoom level
++ * @property {number} bearing Map rotation bearing in degrees counter-clockwise from north
++ * @property {number} pitch Map angle in degrees at which the camera is looking at the ground
++ * @property {LngLat} around If zooming, the zoom center (defaults to map center)
++ */
+ 
+-                if ((bk > k2)) { // ---|-----|-->
+-                    slice.push(intersect(a, b, k1), intersect(a, b, k2));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
++/**
++ * Options common to map movement methods that involve animation, such as Map#panBy and
++ * Map#easeTo, controlling the duration of the animation and easing function. All properties
++ * are optional.
++ *
++ * @typedef {Object} AnimationOptions
++ * @property {number} duration Number in milliseconds
++ * @property {Function} easing
++ * @property {Array} offset point, origin of movement relative to map center
++ * @property {boolean} animate When set to false, no animation happens
++ */
+ 
+-                } else if (bk >= k1) slice.push(intersect(a, b, k1)); // ---|-->  |
++var Camera = module.exports = function() {};
+ 
+-            } else if (ak > k2) {
++util.extend(Camera.prototype, /** @lends Map.prototype */{
++    /**
++     * Get the current view geographical point.
++     * @returns {LngLat}
++     */
++    getCenter: function() { return this.transform.center; },
+ 
+-                if ((bk < k1)) { // <--|-----|---
+-                    slice.push(intersect(a, b, k2), intersect(a, b, k1));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
++    /**
++     * Sets a map location. Equivalent to `jumpTo({center: center})`.
++     *
++     * @param {LngLat} center Map center to jump to
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     * @example
++     * map.setCenter([-74, 38]);
++     */
++    setCenter: function(center, eventData) {
++        this.jumpTo({center: center}, eventData);
++        return this;
++    },
+ 
+-                } else if (bk <= k2) slice.push(intersect(a, b, k2)); // |  <--|---
++    /**
++     * Pan by a certain number of pixels
++     *
++     * @param {Array<number>} offset [x, y]
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    panBy: function(offset, options, eventData) {
++        this.panTo(this.transform.center,
++            util.extend({offset: Point.convert(offset).mult(-1)}, options), eventData);
++        return this;
++    },
+ 
+-            } else {
++    /**
++     * Pan to a certain location with easing
++     *
++     * @param {LngLat} lnglat Location to pan to
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    panTo: function(lnglat, options, eventData) {
++        return this.easeTo(util.extend({
++            center: lnglat
++        }, options), eventData);
++    },
+ 
+-                slice.push(a);
+ 
+-                if (bk < k1) { // <--|---  |
+-                    slice.push(intersect(a, b, k1));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
++    /**
++     * Get the current zoom
++     * @returns {number}
++     */
++    getZoom: function() { return this.transform.zoom; },
+ 
+-                } else if (bk > k2) { // |  ---|-->
+-                    slice.push(intersect(a, b, k2));
+-                    if (!closed) slice = newSlice(slices, slice, area, dist);
+-                }
+-                // | --> |
+-            }
+-        }
++    /**
++     * Sets a map zoom. Equivalent to `jumpTo({zoom: zoom})`.
++     *
++     * @param {number} zoom Map zoom level
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     * @example
++     * // zoom the map to 5
++     * map.setZoom(5);
++     */
++    setZoom: function(zoom, eventData) {
++        this.jumpTo({zoom: zoom}, eventData);
++        return this;
++    },
+ 
+-        // add the last point
+-        a = points[len - 1];
+-        ak = a[axis];
+-        if (ak >= k1 && ak <= k2) slice.push(a);
++    /**
++     * Zooms to a certain zoom level with easing.
++     *
++     * @param {number} zoom
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     */
++    zoomTo: function(zoom, options, eventData) {
++        return this.easeTo(util.extend({
++            zoom: zoom
++        }, options), eventData);
++    },
+ 
+-        // close the polygon if its endpoints are not the same after clipping
++    /**
++     * Zoom in by 1 level
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     */
++    zoomIn: function(options, eventData) {
++        this.zoomTo(this.getZoom() + 1, options, eventData);
++        return this;
++    },
+ 
+-        last = slice[slice.length - 1];
+-        if (closed && last && (slice[0][0] !== last[0] || slice[0][1] !== last[1])) slice.push(slice[0]);
++    /**
++     * Zoom out by 1 level
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires moveend
++     * @fires zoomend
++     * @returns {Map} `this`
++     */
++    zoomOut: function(options, eventData) {
++        this.zoomTo(this.getZoom() - 1, options, eventData);
++        return this;
++    },
+ 
+-        // add the final slice
+-        newSlice(slices, slice, area, dist);
+-    }
+ 
+-    return slices;
+-}
++    /**
++     * Get the current bearing in degrees
++     * @returns {number}
++     */
++    getBearing: function() { return this.transform.bearing; },
+ 
+-function newSlice(slices, slice, area, dist) {
+-    if (slice.length) {
+-        // we don't recalculate the area/length of the unclipped geometry because the case where it goes
+-        // below the visibility threshold as a result of clipping is rare, so we avoid doing unnecessary work
+-        slice.area = area;
+-        slice.dist = dist;
++    /**
++     * Sets a map rotation. Equivalent to `jumpTo({bearing: bearing})`.
++     *
++     * @param {number} bearing Map rotation bearing in degrees counter-clockwise from north
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     * @example
++     * // rotate the map to 90 degrees
++     * map.setBearing(90);
++     */
++    setBearing: function(bearing, eventData) {
++        this.jumpTo({bearing: bearing}, eventData);
++        return this;
++    },
+ 
+-        slices.push(slice);
+-    }
+-    return [];
+-}
++    /**
++     * Rotate bearing by a certain number of degrees with easing
++     *
++     * @param {number} bearing
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    rotateTo: function(bearing, options, eventData) {
++        return this.easeTo(util.extend({
++            bearing: bearing
++        }, options), eventData);
++    },
+ 
+-},{}],357:[function(require,module,exports){
+-'use strict';
++    /**
++     * Sets map bearing to 0 (north) with easing
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    resetNorth: function(options, eventData) {
++        this.rotateTo(0, util.extend({duration: 1000}, options), eventData);
++        return this;
++    },
+ 
+-module.exports = convert;
++    /**
++     * Animates map bearing to 0 (north) if it's already close to it.
++     *
++     * @param {AnimationOptions} [options]
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    snapToNorth: function(options, eventData) {
++        if (Math.abs(this.getBearing()) < this.options.bearingSnap) {
++            return this.resetNorth(options, eventData);
++        }
++        return this;
++    },
+ 
+-var simplify = require('./simplify');
++    /**
++     * Get the current angle in degrees
++     * @returns {number}
++     */
++    getPitch: function() { return this.transform.pitch; },
+ 
+-// converts GeoJSON feature into an intermediate projected JSON vector format with simplification data
++    /**
++     * Sets a map angle. Equivalent to `jumpTo({pitch: pitch})`.
++     *
++     * @param {number} pitch The angle at which the camera is looking at the ground
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    setPitch: function(pitch, eventData) {
++        this.jumpTo({pitch: pitch}, eventData);
++        return this;
++    },
++
++
++    /**
++     * Zoom to contain certain geographical bounds
++     *
++     * @param {LngLatBounds|Array<Array<number>>} bounds [[minLng, minLat], [maxLng, maxLat]]
++     * @param {Object} options
++     * @param {boolean} [options.linear] When true, the map transitions to the new camera using
++     *     {@link #Map.easeTo}. When false, the map transitions using {@link #Map.flyTo}. See
++     *     {@link #Map.flyTo} for information on options specific to that animation transition.
++     * @param {Function} options.easing
++     * @param {number} options.padding how much padding there is around the given bounds on each side in pixels
++     * @param {number} options.maxZoom The resulting zoom level will be at most
++     *     this value.
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    fitBounds: function(bounds, options, eventData) {
+ 
+-function convert(data, tolerance) {
+-    var features = [];
++        options = util.extend({
++            padding: 0,
++            offset: [0, 0],
++            maxZoom: Infinity
++        }, options);
+ 
+-    if (data.type === 'FeatureCollection') {
+-        for (var i = 0; i < data.features.length; i++) {
+-            convertFeature(features, data.features[i], tolerance);
+-        }
+-    } else if (data.type === 'Feature') {
+-        convertFeature(features, data, tolerance);
++        bounds = LngLatBounds.convert(bounds);
+ 
+-    } else {
+-        // single geometry or a geometry collection
+-        convertFeature(features, {geometry: data}, tolerance);
+-    }
+-    return features;
+-}
++        var offset = Point.convert(options.offset),
++            tr = this.transform,
++            nw = tr.project(bounds.getNorthWest()),
++            se = tr.project(bounds.getSouthEast()),
++            size = se.sub(nw),
++            scaleX = (tr.width - options.padding * 2 - Math.abs(offset.x) * 2) / size.x,
++            scaleY = (tr.height - options.padding * 2 - Math.abs(offset.y) * 2) / size.y;
+ 
+-function convertFeature(features, feature, tolerance) {
+-    var geom = feature.geometry,
+-        type = geom.type,
+-        coords = geom.coordinates,
+-        tags = feature.properties,
+-        i, j, rings;
++        options.center = tr.unproject(nw.add(se).div(2));
++        options.zoom = Math.min(tr.scaleZoom(tr.scale * Math.min(scaleX, scaleY)), options.maxZoom);
++        options.bearing = 0;
+ 
+-    if (type === 'Point') {
+-        features.push(create(tags, 1, [projectPoint(coords)]));
++        return options.linear ?
++            this.easeTo(options, eventData) :
++            this.flyTo(options, eventData);
++    },
+ 
+-    } else if (type === 'MultiPoint') {
+-        features.push(create(tags, 1, project(coords)));
++    /**
++     * Change any combination of center, zoom, bearing, and pitch, without
++     * a transition. The map will retain the current values for any options
++     * not included in `options`.
++     *
++     * @param {CameraOptions} options map view options
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires rotate
++     * @fires pitch
++     * @fires zoomend
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    jumpTo: function(options, eventData) {
++        this.stop();
+ 
+-    } else if (type === 'LineString') {
+-        features.push(create(tags, 2, [project(coords, tolerance)]));
++        var tr = this.transform,
++            zoomChanged = false,
++            bearingChanged = false,
++            pitchChanged = false;
+ 
+-    } else if (type === 'MultiLineString' || type === 'Polygon') {
+-        rings = [];
+-        for (i = 0; i < coords.length; i++) {
+-            rings.push(project(coords[i], tolerance));
++        if ('zoom' in options && tr.zoom !== +options.zoom) {
++            zoomChanged = true;
++            tr.zoom = +options.zoom;
+         }
+-        features.push(create(tags, type === 'Polygon' ? 3 : 2, rings));
+ 
+-    } else if (type === 'MultiPolygon') {
+-        rings = [];
+-        for (i = 0; i < coords.length; i++) {
+-            for (j = 0; j < coords[i].length; j++) {
+-                rings.push(project(coords[i][j], tolerance));
+-            }
++        if ('center' in options) {
++            tr.center = LngLat.convert(options.center);
+         }
+-        features.push(create(tags, 3, rings));
+ 
+-    } else if (type === 'GeometryCollection') {
+-        for (i = 0; i < geom.geometries.length; i++) {
+-            convertFeature(features, {
+-                geometry: geom.geometries[i],
+-                properties: tags
+-            }, tolerance);
++        if ('bearing' in options && tr.bearing !== +options.bearing) {
++            bearingChanged = true;
++            tr.bearing = +options.bearing;
+         }
+ 
+-    } else {
+-        throw new Error('Input data is not a valid GeoJSON object.');
+-    }
+-}
+-
+-function create(tags, type, geometry) {
+-    var feature = {
+-        geometry: geometry,
+-        type: type,
+-        tags: tags || null,
+-        min: [2, 1], // initial bbox values;
+-        max: [-1, 0]  // note that coords are usually in [0..1] range
+-    };
+-    calcBBox(feature);
+-    return feature;
+-}
+-
+-function project(lonlats, tolerance) {
+-    var projected = [];
+-    for (var i = 0; i < lonlats.length; i++) {
+-        projected.push(projectPoint(lonlats[i]));
+-    }
+-    if (tolerance) {
+-        simplify(projected, tolerance);
+-        calcSize(projected);
+-    }
+-    return projected;
+-}
+-
+-function projectPoint(p) {
+-    var sin = Math.sin(p[1] * Math.PI / 180),
+-        x = (p[0] / 360 + 0.5),
+-        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
+-
+-    y = y < -1 ? -1 :
+-        y > 1 ? 1 : y;
+-
+-    return [x, y, 0];
+-}
++        if ('pitch' in options && tr.pitch !== +options.pitch) {
++            pitchChanged = true;
++            tr.pitch = +options.pitch;
++        }
+ 
+-// calculate area and length of the poly
+-function calcSize(points) {
+-    var area = 0,
+-        dist = 0;
++        this.fire('movestart', eventData)
++            .fire('move', eventData);
+ 
+-    for (var i = 0, a, b; i < points.length - 1; i++) {
+-        a = b || points[i];
+-        b = points[i + 1];
++        if (zoomChanged) {
++            this.fire('zoomstart', eventData)
++                .fire('zoom', eventData)
++                .fire('zoomend', eventData);
++        }
+ 
+-        area += a[0] * b[1] - b[0] * a[1];
++        if (bearingChanged) {
++            this.fire('rotate', eventData);
++        }
+ 
+-        // use Manhattan distance instead of Euclidian one to avoid expensive square root computation
+-        dist += Math.abs(b[0] - a[0]) + Math.abs(b[1] - a[1]);
+-    }
+-    points.area = Math.abs(area / 2);
+-    points.dist = dist;
+-}
++        if (pitchChanged) {
++            this.fire('pitch', eventData);
++        }
+ 
+-// calculate the feature bounding box for faster clipping later
+-function calcBBox(feature) {
+-    var geometry = feature.geometry,
+-        min = feature.min,
+-        max = feature.max;
++        return this.fire('moveend', eventData);
++    },
+ 
+-    if (feature.type === 1) calcRingBBox(min, max, geometry);
+-    else for (var i = 0; i < geometry.length; i++) calcRingBBox(min, max, geometry[i]);
++    /**
++     * Change any combination of center, zoom, bearing, and pitch, with a smooth animation
++     * between old and new values. The map will retain the current values for any options
++     * not included in `options`.
++     *
++     * @param {CameraOptions|AnimationOptions} options map view and animation options
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires rotate
++     * @fires pitch
++     * @fires zoomend
++     * @fires moveend
++     * @returns {Map} `this`
++     */
++    easeTo: function(options, eventData) {
++        this.stop();
+ 
+-    return feature;
+-}
++        options = util.extend({
++            offset: [0, 0],
++            duration: 500,
++            easing: util.ease
++        }, options);
+ 
+-function calcRingBBox(min, max, points) {
+-    for (var i = 0, p; i < points.length; i++) {
+-        p = points[i];
+-        min[0] = Math.min(p[0], min[0]);
+-        max[0] = Math.max(p[0], max[0]);
+-        min[1] = Math.min(p[1], min[1]);
+-        max[1] = Math.max(p[1], max[1]);
+-    }
+-}
++        var tr = this.transform,
++            offset = Point.convert(options.offset),
++            startZoom = this.getZoom(),
++            startBearing = this.getBearing(),
++            startPitch = this.getPitch(),
+ 
+-},{"./simplify":359}],358:[function(require,module,exports){
+-'use strict';
++            zoom = 'zoom' in options ? +options.zoom : startZoom,
++            bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing,
++            pitch = 'pitch' in options ? +options.pitch : startPitch,
+ 
+-module.exports = geojsonvt;
++            toLngLat,
++            toPoint;
+ 
+-var convert = require('./convert'),     // GeoJSON conversion and preprocessing
+-    transform = require('./transform'), // coordinate transformation
+-    clip = require('./clip'),           // stripe clipping algorithm
+-    wrap = require('./wrap'),           // date line processing
+-    createTile = require('./tile');     // final simplified tile generation
++        if ('center' in options) {
++            toLngLat = LngLat.convert(options.center);
++            toPoint = tr.centerPoint.add(offset);
++        } else if ('around' in options) {
++            toLngLat = LngLat.convert(options.around);
++            toPoint = tr.locationPoint(toLngLat);
++        } else {
++            toPoint = tr.centerPoint.add(offset);
++            toLngLat = tr.pointLocation(toPoint);
++        }
+ 
++        var fromPoint = tr.locationPoint(toLngLat);
+ 
+-function geojsonvt(data, options) {
+-    return new GeoJSONVT(data, options);
+-}
++        if (options.animate === false) options.duration = 0;
+ 
+-function GeoJSONVT(data, options) {
+-    options = this.options = extend(Object.create(this.options), options);
++        this.zooming = (zoom !== startZoom);
++        this.rotating = (startBearing !== bearing);
++        this.pitching = (pitch !== startPitch);
+ 
+-    var debug = options.debug;
++        if (!options.noMoveStart) {
++            this.fire('movestart', eventData);
++        }
++        if (this.zooming) {
++            this.fire('zoomstart', eventData);
++        }
+ 
+-    if (debug) console.time('preprocess data');
++        clearTimeout(this._onEaseEnd);
+ 
+-    var z2 = 1 << options.maxZoom, // 2^z
+-        features = convert(data, options.tolerance / (z2 * options.extent));
++        this._ease(function (k) {
++            if (this.zooming) {
++                tr.zoom = interpolate(startZoom, zoom, k);
++            }
+ 
+-    this.tiles = {};
+-    this.tileCoords = [];
++            if (this.rotating) {
++                tr.bearing = interpolate(startBearing, bearing, k);
++            }
+ 
+-    if (debug) {
+-        console.timeEnd('preprocess data');
+-        console.log('index: maxZoom: %d, maxPoints: %d', options.indexMaxZoom, options.indexMaxPoints);
+-        console.time('generate tiles');
+-        this.stats = {};
+-        this.total = 0;
+-    }
++            if (this.pitching) {
++                tr.pitch = interpolate(startPitch, pitch, k);
++            }
+ 
+-    features = wrap(features, options.buffer / options.extent, intersectX);
++            tr.setLocationAtPoint(toLngLat, fromPoint.add(toPoint.sub(fromPoint)._mult(k)));
+ 
+-    // start slicing from the top tile down
+-    if (features.length) this.splitTile(features, 0, 0, 0);
++            this.fire('move', eventData);
++            if (this.zooming) {
++                this.fire('zoom', eventData);
++            }
++            if (this.rotating) {
++                this.fire('rotate', eventData);
++            }
++            if (this.pitching) {
++                this.fire('pitch', eventData);
++            }
++        }, function() {
++            if (options.delayEndEvents) {
++                this._onEaseEnd = setTimeout(this._easeToEnd.bind(this, eventData), options.delayEndEvents);
++            } else {
++                this._easeToEnd(eventData);
++            }
++        }.bind(this), options);
+ 
+-    if (debug) {
+-        if (features.length) console.log('features: %d, points: %d', this.tiles[0].numFeatures, this.tiles[0].numPoints);
+-        console.timeEnd('generate tiles');
+-        console.log('tiles generated:', this.total, JSON.stringify(this.stats));
+-    }
+-}
++        return this;
++    },
+ 
+-GeoJSONVT.prototype.options = {
+-    maxZoom: 14,            // max zoom to preserve detail on
+-    indexMaxZoom: 5,        // max zoom in the tile index
+-    indexMaxPoints: 100000, // max number of points per tile in the tile index
+-    solidChildren: false,   // whether to tile solid square tiles further
+-    tolerance: 3,           // simplification tolerance (higher means simpler)
+-    extent: 4096,           // tile extent
+-    buffer: 64,             // tile buffer on each side
+-    debug: 0                // logging level (0, 1 or 2)
+-};
++    _easeToEnd: function(eventData) {
++        if (this.zooming) {
++            this.fire('zoomend', eventData);
++        }
++        this.fire('moveend', eventData);
+ 
+-GeoJSONVT.prototype.splitTile = function (features, z, x, y, cz, cx, cy) {
++        this.zooming = false;
++        this.rotating = false;
++        this.pitching = false;
++    },
+ 
+-    var stack = [features, z, x, y],
+-        options = this.options,
+-        debug = options.debug,
+-        solid = null;
++    /**
++     * Change any combination of center, zoom, bearing, and pitch, animated along a curve that
++     * evokes flight. The transition animation seamlessly incorporates zooming and panning to help
++     * the user find his or her bearings even after traversing a great distance.
++     *
++     * @param {CameraOptions|AnimationOptions} options map view and animation options
++     * @param {number} [options.curve=1.42] Relative amount of zooming that takes place along the
++     *     flight path. A high value maximizes zooming for an exaggerated animation, while a low
++     *     value minimizes zooming for something closer to {@link #Map.easeTo}. 1.42 is the average
++     *     value selected by participants in the user study in
++     *     [van Wijk (2003)](https://www.win.tue.nl/~vanwijk/zoompan.pdf). A value of
++     *     `Math.pow(6, 0.25)` would be equivalent to the root mean squared average velocity. A
++     *     value of 1 would produce a circular motion.
++     * @param {number} [options.minZoom] Zero-based zoom level at the peak of the flight path. If
++     *     `options.curve` is specified, this option is ignored.
++     * @param {number} [options.speed=1.2] Average speed of the animation. A speed of 1.2 means that
++     *     the map appears to move along the flight path by 1.2 times `options.curve` screenfuls every
++     *     second. A _screenful_ is the visible span in pixels. It does not correspond to a fixed
++     *     physical distance but rather varies by zoom level.
++     * @param {number} [options.screenSpeed] Average speed of the animation, measured in screenfuls
++     *     per second, assuming a linear timing curve. If `options.speed` is specified, this option
++     *     is ignored.
++     * @param {Function} [options.easing] Transition timing curve
++     * @param {EventData} [eventData] Data to propagate to any event receivers
++     * @fires movestart
++     * @fires zoomstart
++     * @fires move
++     * @fires zoom
++     * @fires rotate
++     * @fires pitch
++     * @fires zoomend
++     * @fires moveend
++     * @returns {this}
++     * @example
++     * // fly with default options to null island
++     * map.flyTo({center: [0, 0], zoom: 9});
++     * // using flyTo options
++     * map.flyTo({
++     *   center: [0, 0],
++     *   zoom: 9,
++     *   speed: 0.2,
++     *   curve: 1,
++     *   easing: function(t) {
++     *     return t;
++     *   }
++     * });
++     */
++    flyTo: function(options, eventData) {
++        // This method implements an “optimal path” animation, as detailed in:
++        //
++        // Van Wijk, Jarke J.; Nuij, Wim A. A. “Smooth and efficient zooming and panning.” INFOVIS
++        //   ’03. pp. 15–22. <https://www.win.tue.nl/~vanwijk/zoompan.pdf#page=5>.
++        //
++        // Where applicable, local variable documentation begins with the associated variable or
++        // function in van Wijk (2003).
+ 
+-    // avoid recursion by using a processing queue
+-    while (stack.length) {
+-        y = stack.pop();
+-        x = stack.pop();
+-        z = stack.pop();
+-        features = stack.pop();
++        this.stop();
+ 
+-        var z2 = 1 << z,
+-            id = toID(z, x, y),
+-            tile = this.tiles[id],
+-            tileTolerance = z === options.maxZoom ? 0 : options.tolerance / (z2 * options.extent);
++        options = util.extend({
++            offset: [0, 0],
++            speed: 1.2,
++            curve: 1.42,
++            easing: util.ease
++        }, options);
+ 
+-        if (!tile) {
+-            if (debug > 1) console.time('creation');
++        var tr = this.transform,
++            offset = Point.convert(options.offset),
++            startZoom = this.getZoom(),
++            startBearing = this.getBearing(),
++            startPitch = this.getPitch();
+ 
+-            tile = this.tiles[id] = createTile(features, z2, x, y, tileTolerance, z === options.maxZoom);
+-            this.tileCoords.push({z: z, x: x, y: y});
++        var center = 'center' in options ? LngLat.convert(options.center) : this.getCenter();
++        var zoom = 'zoom' in options ?  +options.zoom : startZoom;
++        var bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing;
++        var pitch = 'pitch' in options ? +options.pitch : startPitch;
+ 
+-            if (debug) {
+-                if (debug > 1) {
+-                    console.log('tile z%d-%d-%d (features: %d, points: %d, simplified: %d)',
+-                        z, x, y, tile.numFeatures, tile.numPoints, tile.numSimplified);
+-                    console.timeEnd('creation');
+-                }
+-                var key = 'z' + z;
+-                this.stats[key] = (this.stats[key] || 0) + 1;
+-                this.total++;
++        // If a path crossing the antimeridian would be shorter, extend the final coordinate so that
++        // interpolating between the two endpoints will cross it.
++        if (Math.abs(tr.center.lng) + Math.abs(center.lng) > 180) {
++            if (tr.center.lng > 0 && center.lng < 0) {
++                center.lng += 360;
++            } else if (tr.center.lng < 0 && center.lng > 0) {
++                center.lng -= 360;
+             }
+         }
+ 
+-        // save reference to original geometry in tile so that we can drill down later if we stop now
+-        tile.source = features;
+-
+-        // if it's the first-pass tiling
+-        if (!cz) {
+-            // stop tiling if we reached max zoom, or if the tile is too simple
+-            if (z === options.indexMaxZoom || tile.numPoints <= options.indexMaxPoints) continue;
++        var scale = tr.zoomScale(zoom - startZoom),
++            from = tr.point,
++            to = 'center' in options ? tr.project(center).sub(offset.div(scale)) : from;
+ 
+-        // if a drilldown to a specific tile
+-        } else {
+-            // stop tiling if we reached base zoom or our target tile zoom
+-            if (z === options.maxZoom || z === cz) continue;
++        var startWorldSize = tr.worldSize,
++            rho = options.curve,
+ 
+-            // stop tiling if it's not an ancestor of the target tile
+-            var m = 1 << (cz - z);
+-            if (x !== Math.floor(cx / m) || y !== Math.floor(cy / m)) continue;
+-        }
++            // w₀: Initial visible span, measured in pixels at the initial scale.
++            w0 = Math.max(tr.width, tr.height),
++            // w₁: Final visible span, measured in pixels with respect to the initial scale.
++            w1 = w0 / scale,
++            // Length of the flight path as projected onto the ground plane, measured in pixels from
++            // the world image origin at the initial scale.
++            u1 = to.sub(from).mag();
+ 
+-        // stop tiling if the tile is solid clipped square
+-        if (!options.solidChildren && isClippedSquare(tile, options.extent, options.buffer)) {
+-            if (cz) solid = z; // and remember the zoom if we're drilling down
+-            continue;
++        if ('minZoom' in options) {
++            var minZoom = util.clamp(Math.min(options.minZoom, startZoom, zoom), tr.minZoom, tr.maxZoom);
++            // w<sub>m</sub>: Maximum visible span, measured in pixels with respect to the initial
++            // scale.
++            var wMax = w0 / tr.zoomScale(minZoom - startZoom);
++            rho = Math.sqrt(wMax / u1 * 2);
+         }
+ 
+-        // if we slice further down, no need to keep source geometry
+-        tile.source = null;
+-
+-        if (debug > 1) console.time('clipping');
+-
+-        // values we'll use for clipping
+-        var k1 = 0.5 * options.buffer / options.extent,
+-            k2 = 0.5 - k1,
+-            k3 = 0.5 + k1,
+-            k4 = 1 + k1,
+-            tl, bl, tr, br, left, right;
+-
+-        tl = bl = tr = br = null;
+-
+-        left  = clip(features, z2, x - k1, x + k3, 0, intersectX, tile.min[0], tile.max[0]);
+-        right = clip(features, z2, x + k2, x + k4, 0, intersectX, tile.min[0], tile.max[0]);
++        // ρ²
++        var rho2 = rho * rho;
+ 
+-        if (left) {
+-            tl = clip(left, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
+-            bl = clip(left, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
++        /**
++         * rᵢ: Returns the zoom-out factor at one end of the animation.
++         *
++         * @param i 0 for the ascent or 1 for the descent.
++         * @private
++         */
++        function r(i) {
++            var b = (w1 * w1 - w0 * w0 + (i ? -1 : 1) * rho2 * rho2 * u1 * u1) / (2 * (i ? w1 : w0) * rho2 * u1);
++            return Math.log(Math.sqrt(b * b + 1) - b);
+         }
+ 
+-        if (right) {
+-            tr = clip(right, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
+-            br = clip(right, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
+-        }
++        function sinh(n) { return (Math.exp(n) - Math.exp(-n)) / 2; }
++        function cosh(n) { return (Math.exp(n) + Math.exp(-n)) / 2; }
++        function tanh(n) { return sinh(n) / cosh(n); }
+ 
+-        if (debug > 1) console.timeEnd('clipping');
++        // r₀: Zoom-out factor during ascent.
++        var r0 = r(0),
++            /**
++             * w(s): Returns the visible span on the ground, measured in pixels with respect to the
++             * initial scale.
++             *
++             * Assumes an angular field of view of 2 arctan ½ ≈ 53°.
++             * @private
++             */
++            w = function (s) { return (cosh(r0) / cosh(r0 + rho * s)); },
++            /**
++             * u(s): Returns the distance along the flight path as projected onto the ground plane,
++             * measured in pixels from the world image origin at the initial scale.
++             * @private
++             */
++            u = function (s) { return w0 * ((cosh(r0) * tanh(r0 + rho * s) - sinh(r0)) / rho2) / u1; },
++            // S: Total length of the flight path, measured in ρ-screenfuls.
++            S = (r(1) - r0) / rho;
+ 
+-        if (tl) stack.push(tl, z + 1, x * 2,     y * 2);
+-        if (bl) stack.push(bl, z + 1, x * 2,     y * 2 + 1);
+-        if (tr) stack.push(tr, z + 1, x * 2 + 1, y * 2);
+-        if (br) stack.push(br, z + 1, x * 2 + 1, y * 2 + 1);
+-    }
++        // When u₀ = u₁, the optimal path doesn’t require both ascent and descent.
++        if (Math.abs(u1) < 0.000001) {
++            // Perform a more or less instantaneous transition if the path is too short.
++            if (Math.abs(w0 - w1) < 0.000001) return this.easeTo(options);
+ 
+-    return solid;
+-};
++            var k = w1 < w0 ? -1 : 1;
++            S = Math.abs(Math.log(w1 / w0)) / rho;
+ 
+-GeoJSONVT.prototype.getTile = function (z, x, y) {
+-    var options = this.options,
+-        extent = options.extent,
+-        debug = options.debug;
++            u = function() { return 0; };
++            w = function(s) { return Math.exp(k * rho * s); };
++        }
+ 
+-    var z2 = 1 << z;
+-    x = ((x % z2) + z2) % z2; // wrap tile x coordinate
++        if ('duration' in options) {
++            options.duration = +options.duration;
++        } else {
++            var V = 'screenSpeed' in options ? +options.screenSpeed / rho : +options.speed;
++            options.duration = 1000 * S / V;
++        }
+ 
+-    var id = toID(z, x, y);
+-    if (this.tiles[id]) return transform.tile(this.tiles[id], extent);
++        this.zooming = true;
++        if (startBearing !== bearing) this.rotating = true;
++        if (startPitch !== pitch) this.pitching = true;
+ 
+-    if (debug > 1) console.log('drilling down to z%d-%d-%d', z, x, y);
++        this.fire('movestart', eventData);
++        this.fire('zoomstart', eventData);
+ 
+-    var z0 = z,
+-        x0 = x,
+-        y0 = y,
+-        parent;
++        this._ease(function (k) {
++            // s: The distance traveled along the flight path, measured in ρ-screenfuls.
++            var s = k * S,
++                us = u(s);
+ 
+-    while (!parent && z0 > 0) {
+-        z0--;
+-        x0 = Math.floor(x0 / 2);
+-        y0 = Math.floor(y0 / 2);
+-        parent = this.tiles[toID(z0, x0, y0)];
+-    }
++            tr.zoom = startZoom + tr.scaleZoom(1 / w(s));
++            tr.center = tr.unproject(from.add(to.sub(from).mult(us)), startWorldSize);
+ 
+-    if (!parent || !parent.source) return null;
++            if (this.rotating) {
++                tr.bearing = interpolate(startBearing, bearing, k);
++            }
++            if (this.pitching) {
++                tr.pitch = interpolate(startPitch, pitch, k);
++            }
+ 
+-    // if we found a parent tile containing the original geometry, we can drill down from it
+-    if (debug > 1) console.log('found parent tile z%d-%d-%d', z0, x0, y0);
++            this.fire('move', eventData);
++            this.fire('zoom', eventData);
++            if (this.rotating) {
++                this.fire('rotate', eventData);
++            }
++            if (this.pitching) {
++                this.fire('pitch', eventData);
++            }
++        }, function() {
++            this.fire('zoomend', eventData);
++            this.fire('moveend', eventData);
++            this.zooming = false;
++            this.rotating = false;
++            this.pitching = false;
++        }, options);
+ 
+-    // it parent tile is a solid clipped square, return it instead since it's identical
+-    if (isClippedSquare(parent, extent, options.buffer)) return transform.tile(parent, extent);
++        return this;
++    },
+ 
+-    if (debug > 1) console.time('drilling down');
+-    var solid = this.splitTile(parent.source, z0, x0, y0, z, x, y);
+-    if (debug > 1) console.timeEnd('drilling down');
++    isEasing: function() {
++        return !!this._abortFn;
++    },
+ 
+-    // one of the parent tiles was a solid clipped square
+-    if (solid !== null) {
+-        var m = 1 << (z - solid);
+-        id = toID(solid, Math.floor(x / m), Math.floor(y / m));
+-    }
++    /**
++     * Stop current animation
++     *
++     * @returns {Map} `this`
++     */
++    stop: function() {
++        if (this._abortFn) {
++            this._abortFn();
++            this._finishEase();
++        }
++        return this;
++    },
+ 
+-    return this.tiles[id] ? transform.tile(this.tiles[id], extent) : null;
+-};
++    _ease: function(frame, finish, options) {
++        this._finishFn = finish;
++        this._abortFn = browser.timed(function (t) {
++            frame.call(this, options.easing(t));
++            if (t === 1) {
++                this._finishEase();
++            }
++        }, options.animate === false ? 0 : options.duration, this);
++    },
+ 
+-function toID(z, x, y) {
+-    return (((1 << z) * y + x) * 32) + z;
+-}
++    _finishEase: function() {
++        delete this._abortFn;
++        // The finish function might emit events which trigger new eases, which
++        // set a new _finishFn. Ensure we don't delete it unintentionally.
++        var finish = this._finishFn;
++        delete this._finishFn;
++        finish.call(this);
++    },
+ 
+-function intersectX(a, b, x) {
+-    return [x, (x - a[0]) * (b[1] - a[1]) / (b[0] - a[0]) + a[1], 1];
+-}
+-function intersectY(a, b, y) {
+-    return [(y - a[1]) * (b[0] - a[0]) / (b[1] - a[1]) + a[0], y, 1];
+-}
++    // convert bearing so that it's numerically close to the current one so that it interpolates properly
++    _normalizeBearing: function(bearing, currentBearing) {
++        bearing = util.wrap(bearing, -180, 180);
++        var diff = Math.abs(bearing - currentBearing);
++        if (Math.abs(bearing - 360 - currentBearing) < diff) bearing -= 360;
++        if (Math.abs(bearing + 360 - currentBearing) < diff) bearing += 360;
++        return bearing;
++    },
+ 
+-function extend(dest, src) {
+-    for (var i in src) dest[i] = src[i];
+-    return dest;
+-}
++    _updateEasing: function(duration, zoom, bezier) {
++        var easing;
+ 
+-// checks whether a tile is a whole-area fill after clipping; if it is, there's no sense slicing it further
+-function isClippedSquare(tile, extent, buffer) {
++        if (this.ease) {
++            var ease = this.ease,
++                t = (Date.now() - ease.start) / ease.duration,
++                speed = ease.easing(t + 0.01) - ease.easing(t),
+ 
+-    var features = tile.source;
+-    if (features.length !== 1) return false;
++                // Quick hack to make new bezier that is continuous with last
++                x = 0.27 / Math.sqrt(speed * speed + 0.0001) * 0.01,
++                y = Math.sqrt(0.27 * 0.27 - x * x);
+ 
+-    var feature = features[0];
+-    if (feature.type !== 3 || feature.geometry.length > 1) return false;
++            easing = util.bezier(x, y, 0.25, 1);
++        } else {
++            easing = bezier ? util.bezier.apply(util, bezier) : util.ease;
++        }
+ 
+-    var len = feature.geometry[0].length;
+-    if (len !== 5) return false;
++        // store information on current easing
++        this.ease = {
++            start: (new Date()).getTime(),
++            to: Math.pow(2, zoom),
++            duration: duration,
++            easing: easing
++        };
+ 
+-    for (var i = 0; i < len; i++) {
+-        var p = transform.point(feature.geometry[0][i], extent, tile.z2, tile.x, tile.y);
+-        if ((p[0] !== -buffer && p[0] !== extent + buffer) ||
+-            (p[1] !== -buffer && p[1] !== extent + buffer)) return false;
++        return easing;
+     }
++});
+ 
+-    return true;
+-}
++/**
++ * Pitch event. This event is emitted whenever the map's pitch changes.
++ *
++ * @event pitch
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
++ */
+ 
+-},{"./clip":356,"./convert":357,"./tile":360,"./transform":361,"./wrap":362}],359:[function(require,module,exports){
++},{"../geo/lng_lat":269,"../geo/lng_lat_bounds":270,"../util/browser":348,"../util/interpolate":356,"../util/util":362,"point-geometry":400}],331:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = simplify;
+-
+-// calculate simplification data using optimized Douglas-Peucker algorithm
+-
+-function simplify(points, tolerance) {
+-
+-    var sqTolerance = tolerance * tolerance,
+-        len = points.length,
+-        first = 0,
+-        last = len - 1,
+-        stack = [],
+-        i, maxSqDist, sqDist, index;
+-
+-    // always retain the endpoints (1 is the max value)
+-    points[first][2] = 1;
+-    points[last][2] = 1;
++var Control = require('./control');
++var DOM = require('../../util/dom');
++var util = require('../../util/util');
+ 
+-    // avoid recursion by using a stack
+-    while (last) {
++module.exports = Attribution;
+ 
+-        maxSqDist = 0;
++/**
++ * Creates an attribution control
++ * @class Attribution
++ * @param {Object} [options]
++ * @param {string} [options.position='bottom-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
++ * @example
++ * var map = new mapboxgl.Map({attributionControl: false})
++ *     .addControl(new mapboxgl.Attribution({position: 'top-left'}));
++ */
++function Attribution(options) {
++    util.setOptions(this, options);
++}
+ 
+-        for (i = first + 1; i < last; i++) {
+-            sqDist = getSqSegDist(points[i], points[first], points[last]);
++Attribution.createAttributionString = function(sources) {
++    var attributions = [];
+ 
+-            if (sqDist > maxSqDist) {
+-                index = i;
+-                maxSqDist = sqDist;
+-            }
++    for (var id in sources) {
++        var source = sources[id];
++        if (source.attribution && attributions.indexOf(source.attribution) < 0) {
++            attributions.push(source.attribution);
+         }
++    }
+ 
+-        if (maxSqDist > sqTolerance) {
+-            points[index][2] = maxSqDist; // save the point importance in squared pixels as a z coordinate
+-            stack.push(first);
+-            stack.push(index);
+-            first = index;
+-
+-        } else {
+-            last = stack.pop();
+-            first = stack.pop();
++    // remove any entries that are substrings of another entry.
++    // first sort by length so that substrings come first
++    attributions.sort(function (a, b) { return a.length - b.length; });
++    attributions = attributions.filter(function (attrib, i) {
++        for (var j = i + 1; j < attributions.length; j++) {
++            if (attributions[j].indexOf(attrib) >= 0) { return false; }
+         }
+-    }
+-}
++        return true;
++    });
+ 
+-// square distance from a point to a segment
+-function getSqSegDist(p, a, b) {
++    return attributions.join(' | ');
++};
+ 
+-    var x = a[0], y = a[1],
+-        bx = b[0], by = b[1],
+-        px = p[0], py = p[1],
+-        dx = bx - x,
+-        dy = by - y;
++Attribution.prototype = util.inherit(Control, {
++    options: {
++        position: 'bottom-right'
++    },
+ 
+-    if (dx !== 0 || dy !== 0) {
++    onAdd: function(map) {
++        var className = 'mapboxgl-ctrl-attrib',
++            container = this._container = DOM.create('div', className, map.getContainer());
+ 
+-        var t = ((px - x) * dx + (py - y) * dy) / (dx * dx + dy * dy);
++        this._update();
++        map.on('source.load', this._update.bind(this));
++        map.on('source.change', this._update.bind(this));
++        map.on('source.remove', this._update.bind(this));
++        map.on('moveend', this._updateEditLink.bind(this));
+ 
+-        if (t > 1) {
+-            x = bx;
+-            y = by;
++        return container;
++    },
+ 
+-        } else if (t > 0) {
+-            x += dx * t;
+-            y += dy * t;
++    _update: function() {
++        if (this._map.style) {
++            this._container.innerHTML = Attribution.createAttributionString(this._map.style.sources);
+         }
+-    }
+ 
+-    dx = px - x;
+-    dy = py - y;
++        this._editLink = this._container.getElementsByClassName('mapbox-improve-map')[0];
++        this._updateEditLink();
++    },
+ 
+-    return dx * dx + dy * dy;
+-}
++    _updateEditLink: function() {
++        if (this._editLink) {
++            var center = this._map.getCenter();
++            this._editLink.href = 'https://www.mapbox.com/map-feedback/#/' +
++                    center.lng + '/' + center.lat + '/' + Math.round(this._map.getZoom() + 1);
++        }
++    }
++});
+ 
+-},{}],360:[function(require,module,exports){
++},{"../../util/dom":351,"../../util/util":362,"./control":332}],332:[function(require,module,exports){
+ 'use strict';
+ 
+-module.exports = createTile;
+-
+-function createTile(features, z2, tx, ty, tolerance, noSimplify) {
+-    var tile = {
+-        features: [],
+-        numPoints: 0,
+-        numSimplified: 0,
+-        numFeatures: 0,
+-        source: null,
+-        x: tx,
+-        y: ty,
+-        z2: z2,
+-        transformed: false,
+-        min: [2, 1],
+-        max: [-1, 0]
+-    };
+-    for (var i = 0; i < features.length; i++) {
+-        tile.numFeatures++;
+-        addFeature(tile, features[i], tolerance, noSimplify);
+-
+-        var min = features[i].min,
+-            max = features[i].max;
+-
+-        if (min[0] < tile.min[0]) tile.min[0] = min[0];
+-        if (min[1] < tile.min[1]) tile.min[1] = min[1];
+-        if (max[0] > tile.max[0]) tile.max[0] = max[0];
+-        if (max[1] > tile.max[1]) tile.max[1] = max[1];
+-    }
+-    return tile;
+-}
+-
+-function addFeature(tile, feature, tolerance, noSimplify) {
++module.exports = Control;
+ 
+-    var geom = feature.geometry,
+-        type = feature.type,
+-        simplified = [],
+-        sqTolerance = tolerance * tolerance,
+-        i, j, ring, p;
++/**
++ * A base class for map-related interface elements.
++ *
++ * @class Control
++ */
++function Control() {}
+ 
+-    if (type === 1) {
+-        for (i = 0; i < geom.length; i++) {
+-            simplified.push(geom[i]);
+-            tile.numPoints++;
+-            tile.numSimplified++;
++Control.prototype = {
++    /**
++     * Add this control to the map, returning the control itself
++     * for chaining. This will insert the control's DOM element into
++     * the map's DOM element if the control has a `position` specified.
++     *
++     * @param {Map} map
++     * @returns {Control} `this`
++     */
++    addTo: function(map) {
++        this._map = map;
++        var container = this._container = this.onAdd(map);
++        if (this.options && this.options.position) {
++            var pos = this.options.position;
++            var corner = map._controlCorners[pos];
++            container.className += ' mapboxgl-ctrl';
++            if (pos.indexOf('bottom') !== -1) {
++                corner.insertBefore(container, corner.firstChild);
++            } else {
++                corner.appendChild(container);
++            }
+         }
+ 
+-    } else {
+-
+-        // simplify and transform projected coordinates for tile geometry
+-        for (i = 0; i < geom.length; i++) {
+-            ring = geom[i];
++        return this;
++    },
+ 
+-            // filter out tiny polylines & polygons
+-            if (!noSimplify && ((type === 2 && ring.dist < tolerance) ||
+-                                (type === 3 && ring.area < sqTolerance))) {
+-                tile.numPoints += ring.length;
+-                continue;
+-            }
++    /**
++     * Remove this control from the map it has been added to.
++     *
++     * @returns {Control} `this`
++     */
++    remove: function() {
++        this._container.parentNode.removeChild(this._container);
++        if (this.onRemove) this.onRemove(this._map);
++        this._map = null;
++        return this;
++    }
++};
+ 
+-            var simplifiedRing = [];
++},{}],333:[function(require,module,exports){
++'use strict';
+ 
+-            for (j = 0; j < ring.length; j++) {
+-                p = ring[j];
+-                // keep points with importance > tolerance
+-                if (noSimplify || p[2] > sqTolerance) {
+-                    simplifiedRing.push(p);
+-                    tile.numSimplified++;
+-                }
+-                tile.numPoints++;
+-            }
++var Control = require('./control');
++var browser = require('../../util/browser');
++var DOM = require('../../util/dom');
++var util = require('../../util/util');
+ 
+-            simplified.push(simplifiedRing);
+-        }
+-    }
++module.exports = Geolocate;
+ 
+-    if (simplified.length) {
+-        tile.features.push({
+-            geometry: simplified,
+-            type: type,
+-            tags: feature.tags || null
+-        });
+-    }
+-}
++var geoOptions = { enableHighAccuracy: false, timeout: 6000 /* 6sec */ };
+ 
+-},{}],361:[function(require,module,exports){
+-'use strict';
+ 
+-exports.tile = transformTile;
+-exports.point = transformPoint;
++/**
++ * Creates a geolocation control
++ * @class Geolocate
++ * @param {Object} [options]
++ * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
++ * @example
++ * map.addControl(new mapboxgl.Geolocate({position: 'top-left'})); // position is optional
++ */
++function Geolocate(options) {
++    util.setOptions(this, options);
++}
+ 
+-// Transforms the coordinates of each feature in the given tile from
+-// mercator-projected space into (extent x extent) tile space.
+-function transformTile(tile, extent) {
+-    if (tile.transformed) return tile;
++Geolocate.prototype = util.inherit(Control, {
++    options: {
++        position: 'top-right'
++    },
+ 
+-    var z2 = tile.z2,
+-        tx = tile.x,
+-        ty = tile.y,
+-        i, j, k;
++    onAdd: function(map) {
++        var className = 'mapboxgl-ctrl';
+ 
+-    for (i = 0; i < tile.features.length; i++) {
+-        var feature = tile.features[i],
+-            geom = feature.geometry,
+-            type = feature.type;
++        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
++        if (!browser.supportsGeolocation) return container;
+ 
+-        if (type === 1) {
+-            for (j = 0; j < geom.length; j++) geom[j] = transformPoint(geom[j], extent, z2, tx, ty);
++        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
+ 
+-        } else {
+-            for (j = 0; j < geom.length; j++) {
+-                var ring = geom[j];
+-                for (k = 0; k < ring.length; k++) ring[k] = transformPoint(ring[k], extent, z2, tx, ty);
+-            }
+-        }
+-    }
++        this._geolocateButton = DOM.create('button', (className + '-icon ' + className + '-geolocate'), this._container);
++        this._geolocateButton.addEventListener('click', this._onClickGeolocate.bind(this));
++        return container;
++    },
+ 
+-    tile.transformed = true;
++    _onContextMenu: function(e) {
++        e.preventDefault();
++    },
+ 
+-    return tile;
+-}
++    _onClickGeolocate: function() {
++        navigator.geolocation.getCurrentPosition(this._success.bind(this), this._error.bind(this), geoOptions);
+ 
+-function transformPoint(p, extent, z2, tx, ty) {
+-    var x = Math.round(extent * (p[0] * z2 - tx)),
+-        y = Math.round(extent * (p[1] * z2 - ty));
+-    return [x, y];
+-}
++        // This timeout ensures that we still call finish() even if
++        // the user declines to share their location in Firefox
++        this._timeoutId = setTimeout(this._finish.bind(this), 10000 /* 10sec */);
++    },
+ 
+-},{}],362:[function(require,module,exports){
+-'use strict';
++    _success: function(position) {
++        this._map.jumpTo({
++            center: [position.coords.longitude, position.coords.latitude],
++            zoom: 17,
++            bearing: 0,
++            pitch: 0
++        });
++        this._finish();
++    },
+ 
+-var clip = require('./clip');
++    _error: function() {
++        this._finish();
++    },
+ 
+-module.exports = wrap;
++    _finish: function() {
++        if (this._timeoutId) { clearTimeout(this._timeoutId); }
++        this._timeoutId = undefined;
++    }
+ 
+-function wrap(features, buffer, intersectX) {
+-    var merged = features,
+-        left  = clip(features, 1, -1 - buffer, buffer,     0, intersectX, -1, 2), // left world copy
+-        right = clip(features, 1,  1 - buffer, 2 + buffer, 0, intersectX, -1, 2); // right world copy
++});
+ 
+-    if (left || right) {
+-        merged = clip(features, 1, -buffer, 1 + buffer, 0, intersectX, -1, 2); // center world copy
+ 
+-        if (left) merged = shiftFeatureCoords(left, 1).concat(merged); // merge left into center
+-        if (right) merged = merged.concat(shiftFeatureCoords(right, -1)); // merge right into center
+-    }
++},{"../../util/browser":348,"../../util/dom":351,"../../util/util":362,"./control":332}],334:[function(require,module,exports){
++'use strict';
+ 
+-    return merged;
++var Control = require('./control');
++var DOM = require('../../util/dom');
++var util = require('../../util/util');
++
++module.exports = Navigation;
++
++/**
++ * Creates a navigation control with zoom buttons and a compass
++ * @class Navigation
++ * @param {Object} [options]
++ * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `top-right`, `top-left`, `bottom-right`, `bottom-left`
++ * @example
++ * map.addControl(new mapboxgl.Navigation({position: 'top-left'})); // position is optional
++ */
++function Navigation(options) {
++    util.setOptions(this, options);
+ }
+ 
+-function shiftFeatureCoords(features, offset) {
+-    var newFeatures = [];
++Navigation.prototype = util.inherit(Control, {
++    options: {
++        position: 'top-right'
++    },
+ 
+-    for (var i = 0; i < features.length; i++) {
+-        var feature = features[i],
+-            type = feature.type;
++    onAdd: function(map) {
++        var className = 'mapboxgl-ctrl';
+ 
+-        var newGeometry;
++        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
++        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));
+ 
+-        if (type === 1) {
+-            newGeometry = shiftCoords(feature.geometry, offset);
+-        } else {
+-            newGeometry = [];
+-            for (var j = 0; j < feature.geometry.length; j++) {
+-                newGeometry.push(shiftCoords(feature.geometry[j], offset));
+-            }
+-        }
++        this._zoomInButton = this._createButton(className + '-icon ' + className + '-zoom-in', map.zoomIn.bind(map));
++        this._zoomOutButton = this._createButton(className + '-icon ' + className + '-zoom-out', map.zoomOut.bind(map));
++        this._compass = this._createButton(className + '-icon ' + className + '-compass', map.resetNorth.bind(map));
+ 
+-        newFeatures.push({
+-            geometry: newGeometry,
+-            type: type,
+-            tags: feature.tags,
+-            min: [feature.min[0] + offset, feature.min[1]],
+-            max: [feature.max[0] + offset, feature.max[1]]
+-        });
+-    }
++        this._compassArrow = DOM.create('div', 'arrow', this._compass);
+ 
+-    return newFeatures;
+-}
++        this._compass.addEventListener('mousedown', this._onCompassDown.bind(this));
++        this._onCompassMove = this._onCompassMove.bind(this);
++        this._onCompassUp = this._onCompassUp.bind(this);
+ 
+-function shiftCoords(points, offset) {
+-    var newPoints = [];
+-    newPoints.area = points.area;
+-    newPoints.dist = points.dist;
++        map.on('rotate', this._rotateCompassArrow.bind(this));
++        this._rotateCompassArrow();
+ 
+-    for (var i = 0; i < points.length; i++) {
+-        newPoints.push([points[i][0] + offset, points[i][1], points[i][2]]);
+-    }
+-    return newPoints;
+-}
++        this._el = map.getCanvasContainer();
+ 
+-},{"./clip":356}],363:[function(require,module,exports){
+-/**
+- * @fileoverview gl-matrix - High performance matrix and vector operations
+- * @author Brandon Jones
+- * @author Colin MacKenzie IV
+- * @version 2.3.2
+- */
++        return container;
++    },
+ 
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++    _onContextMenu: function(e) {
++        e.preventDefault();
++    },
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    _onCompassDown: function(e) {
++        if (e.button !== 0) return;
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++        DOM.disableDrag();
++        document.addEventListener('mousemove', this._onCompassMove);
++        document.addEventListener('mouseup', this._onCompassUp);
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
+-// END HEADER
++        this._el.dispatchEvent(copyMouseEvent(e));
++        e.stopPropagation();
++    },
+ 
+-exports.glMatrix = require("./gl-matrix/common.js");
+-exports.mat2 = require("./gl-matrix/mat2.js");
+-exports.mat2d = require("./gl-matrix/mat2d.js");
+-exports.mat3 = require("./gl-matrix/mat3.js");
+-exports.mat4 = require("./gl-matrix/mat4.js");
+-exports.quat = require("./gl-matrix/quat.js");
+-exports.vec2 = require("./gl-matrix/vec2.js");
+-exports.vec3 = require("./gl-matrix/vec3.js");
+-exports.vec4 = require("./gl-matrix/vec4.js");
+-},{"./gl-matrix/common.js":364,"./gl-matrix/mat2.js":365,"./gl-matrix/mat2d.js":366,"./gl-matrix/mat3.js":367,"./gl-matrix/mat4.js":368,"./gl-matrix/quat.js":369,"./gl-matrix/vec2.js":370,"./gl-matrix/vec3.js":371,"./gl-matrix/vec4.js":372}],364:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++    _onCompassMove: function(e) {
++        if (e.button !== 0) return;
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++        this._el.dispatchEvent(copyMouseEvent(e));
++        e.stopPropagation();
++    },
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    _onCompassUp: function(e) {
++        if (e.button !== 0) return;
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++        document.removeEventListener('mousemove', this._onCompassMove);
++        document.removeEventListener('mouseup', this._onCompassUp);
++        DOM.enableDrag();
+ 
+-/**
+- * @class Common utilities
+- * @name glMatrix
+- */
+-var glMatrix = {};
++        this._el.dispatchEvent(copyMouseEvent(e));
++        e.stopPropagation();
++    },
+ 
+-// Configuration Constants
+-glMatrix.EPSILON = 0.000001;
+-glMatrix.ARRAY_TYPE = (typeof Float32Array !== 'undefined') ? Float32Array : Array;
+-glMatrix.RANDOM = Math.random;
+-glMatrix.ENABLE_SIMD = false;
++    _createButton: function(className, fn) {
++        var a = DOM.create('button', className, this._container);
++        a.addEventListener('click', function() { fn(); });
++        return a;
++    },
+ 
+-// Capability detection
+-glMatrix.SIMD_AVAILABLE = (glMatrix.ARRAY_TYPE === Float32Array) && ('SIMD' in this);
+-glMatrix.USE_SIMD = glMatrix.ENABLE_SIMD && glMatrix.SIMD_AVAILABLE;
++    _rotateCompassArrow: function() {
++        var rotate = 'rotate(' + (this._map.transform.angle * (180 / Math.PI)) + 'deg)';
++        this._compassArrow.style.transform = rotate;
++    }
++});
+ 
+-/**
+- * Sets the type of array used when creating new vectors and matrices
+- *
+- * @param {Type} type Array type, such as Float32Array or Array
+- */
+-glMatrix.setMatrixArrayType = function(type) {
+-    glMatrix.ARRAY_TYPE = type;
++
++function copyMouseEvent(e) {
++    return new MouseEvent(e.type, {
++        button: 2,    // right click
++        buttons: 2,   // right click
++        bubbles: true,
++        cancelable: true,
++        detail: e.detail,
++        view: e.view,
++        screenX: e.screenX,
++        screenY: e.screenY,
++        clientX: e.clientX,
++        clientY: e.clientY,
++        movementX: e.movementX,
++        movementY: e.movementY,
++        ctrlKey: e.ctrlKey,
++        shiftKey: e.shiftKey,
++        altKey: e.altKey,
++        metaKey: e.metaKey
++    });
+ }
+ 
+-var degree = Math.PI / 180;
+ 
+-/**
+-* Convert Degree To Radian
+-*
+-* @param {Number} Angle in Degrees
+-*/
+-glMatrix.toRadian = function(a){
+-     return a * degree;
+-}
++},{"../../util/dom":351,"../../util/util":362,"./control":332}],335:[function(require,module,exports){
++'use strict';
++
++var DOM = require('../../util/dom'),
++    LngLatBounds = require('../../geo/lng_lat_bounds'),
++    util = require('../../util/util');
++
++module.exports = BoxZoomHandler;
+ 
+ /**
+- * Tests whether or not the arguments have approximately the same value, within an absolute
+- * or relative tolerance of glMatrix.EPSILON (an absolute tolerance is used for values less 
+- * than or equal to 1.0, and a relative tolerance is used for larger values)
+- * 
+- * @param {Number} a The first number to test.
+- * @param {Number} b The second number to test.
+- * @returns {Boolean} True if the numbers are approximately equal, false otherwise.
++ * The `BoxZoomHandler` allows a user to zoom the map to fit a bounding box.
++ * The bounding box is defined by holding `shift` while dragging the cursor.
++ * @class BoxZoomHandler
+  */
+-glMatrix.equals = function(a, b) {
+-	return Math.abs(a - b) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a), Math.abs(b));
++function BoxZoomHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
++    this._container = map.getContainer();
++
++    util.bindHandlers(this);
+ }
+ 
+-module.exports = glMatrix;
++BoxZoomHandler.prototype = {
+ 
+-},{}],365:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++    _enabled: false,
++    _active: false,
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    /**
++     * Returns the current enabled/disabled state of the "box zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    /**
++     * Returns true if the "box zoom" interaction is currently active, i.e. currently being used.
++     * @returns {boolean} active state
++     */
++    isActive: function () {
++        return this._active;
++    },
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    /**
++     * Enable the "box zoom" interaction.
++     * @example
++     *   map.boxZoom.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('mousedown', this._onMouseDown, false);
++        this._enabled = true;
++    },
+ 
+-var glMatrix = require("./common.js");
++    /**
++     * Disable the "box zoom" interaction.
++     * @example
++     *   map.boxZoom.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('mousedown', this._onMouseDown);
++        this._enabled = false;
++    },
+ 
+-/**
+- * @class 2x2 Matrix
+- * @name mat2
+- */
+-var mat2 = {};
++    _onMouseDown: function (e) {
++        if (!(e.shiftKey && e.button === 0)) return;
+ 
+-/**
+- * Creates a new identity mat2
+- *
+- * @returns {mat2} a new 2x2 matrix
+- */
+-mat2.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
+-};
++        document.addEventListener('mousemove', this._onMouseMove, false);
++        document.addEventListener('keydown', this._onKeyDown, false);
++        document.addEventListener('mouseup', this._onMouseUp, false);
+ 
+-/**
+- * Creates a new mat2 initialized with values from an existing matrix
+- *
+- * @param {mat2} a matrix to clone
+- * @returns {mat2} a new 2x2 matrix
+- */
+-mat2.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
+-};
++        DOM.disableDrag();
++        this._startPos = DOM.mousePos(this._el, e);
++        this._active = true;
++    },
+ 
+-/**
+- * Copy the values from one mat2 to another
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
+-};
++    _onMouseMove: function (e) {
++        var p0 = this._startPos,
++            p1 = DOM.mousePos(this._el, e);
+ 
+-/**
+- * Set a mat2 to the identity matrix
+- *
+- * @param {mat2} out the receiving matrix
+- * @returns {mat2} out
+- */
+-mat2.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
+-};
++        if (!this._box) {
++            this._box = DOM.create('div', 'mapboxgl-boxzoom', this._container);
++            this._container.classList.add('mapboxgl-crosshair');
++            this._fireEvent('boxzoomstart', e);
++        }
+ 
+-/**
+- * Create a new mat2 with the given values
+- *
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m10 Component in column 1, row 0 position (index 2)
+- * @param {Number} m11 Component in column 1, row 1 position (index 3)
+- * @returns {mat2} out A new 2x2 matrix
+- */
+-mat2.fromValues = function(m00, m01, m10, m11) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m10;
+-    out[3] = m11;
+-    return out;
+-};
++        var minX = Math.min(p0.x, p1.x),
++            maxX = Math.max(p0.x, p1.x),
++            minY = Math.min(p0.y, p1.y),
++            maxY = Math.max(p0.y, p1.y);
+ 
+-/**
+- * Set the components of a mat2 to the given values
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m10 Component in column 1, row 0 position (index 2)
+- * @param {Number} m11 Component in column 1, row 1 position (index 3)
+- * @returns {mat2} out
+- */
+-mat2.set = function(out, m00, m01, m10, m11) {
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m10;
+-    out[3] = m11;
+-    return out;
+-};
++        DOM.setTransform(this._box, 'translate(' + minX + 'px,' + minY + 'px)');
+ 
++        this._box.style.width = (maxX - minX) + 'px';
++        this._box.style.height = (maxY - minY) + 'px';
++    },
+ 
+-/**
+- * Transpose the values of a mat2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.transpose = function(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a1 = a[1];
+-        out[1] = a[2];
+-        out[2] = a1;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[2];
+-        out[2] = a[1];
+-        out[3] = a[3];
+-    }
+-    
+-    return out;
+-};
++    _onMouseUp: function (e) {
++        if (e.button !== 0) return;
+ 
+-/**
+- * Inverts a mat2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.invert = function(out, a) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
++        var p0 = this._startPos,
++            p1 = DOM.mousePos(this._el, e),
++            bounds = new LngLatBounds(this._map.unproject(p0), this._map.unproject(p1));
+ 
+-        // Calculate the determinant
+-        det = a0 * a3 - a2 * a1;
++        this._finish();
+ 
+-    if (!det) {
+-        return null;
+-    }
+-    det = 1.0 / det;
+-    
+-    out[0] =  a3 * det;
+-    out[1] = -a1 * det;
+-    out[2] = -a2 * det;
+-    out[3] =  a0 * det;
++        if (p0.x === p1.x && p0.y === p1.y) {
++            this._fireEvent('boxzoomcancel', e);
++        } else {
++            this._map
++                .fitBounds(bounds, {linear: true})
++                .fire('boxzoomend', { originalEvent: e, boxZoomBounds: bounds });
++        }
++    },
+ 
+-    return out;
+-};
++    _onKeyDown: function (e) {
++        if (e.keyCode === 27) {
++            this._finish();
++            this._fireEvent('boxzoomcancel', e);
++        }
++    },
+ 
+-/**
+- * Calculates the adjugate of a mat2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
+- */
+-mat2.adjoint = function(out, a) {
+-    // Caching this value is nessecary if out == a
+-    var a0 = a[0];
+-    out[0] =  a[3];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    out[3] =  a0;
++    _finish: function () {
++        this._active = false;
+ 
+-    return out;
+-};
++        document.removeEventListener('mousemove', this._onMouseMove, false);
++        document.removeEventListener('keydown', this._onKeyDown, false);
++        document.removeEventListener('mouseup', this._onMouseUp, false);
+ 
+-/**
+- * Calculates the determinant of a mat2
+- *
+- * @param {mat2} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-mat2.determinant = function (a) {
+-    return a[0] * a[3] - a[2] * a[1];
+-};
++        this._container.classList.remove('mapboxgl-crosshair');
+ 
+-/**
+- * Multiplies two mat2's
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @returns {mat2} out
+- */
+-mat2.multiply = function (out, a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    out[0] = a0 * b0 + a2 * b1;
+-    out[1] = a1 * b0 + a3 * b1;
+-    out[2] = a0 * b2 + a2 * b3;
+-    out[3] = a1 * b2 + a3 * b3;
+-    return out;
+-};
++        if (this._box) {
++            this._box.parentNode.removeChild(this._box);
++            this._box = null;
++        }
+ 
+-/**
+- * Alias for {@link mat2.multiply}
+- * @function
+- */
+-mat2.mul = mat2.multiply;
++        DOM.enableDrag();
++    },
+ 
+-/**
+- * Rotates a mat2 by the given angle
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2} out
+- */
+-mat2.rotate = function (out, a, rad) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+-        s = Math.sin(rad),
+-        c = Math.cos(rad);
+-    out[0] = a0 *  c + a2 * s;
+-    out[1] = a1 *  c + a3 * s;
+-    out[2] = a0 * -s + a2 * c;
+-    out[3] = a1 * -s + a3 * c;
+-    return out;
++    _fireEvent: function (type, e) {
++        return this._map.fire(type, { originalEvent: e });
++    }
+ };
+ 
+-/**
+- * Scales the mat2 by the dimensions in the given vec2
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the matrix to rotate
+- * @param {vec2} v the vec2 to scale the matrix by
+- * @returns {mat2} out
+- **/
+-mat2.scale = function(out, a, v) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+-        v0 = v[0], v1 = v[1];
+-    out[0] = a0 * v0;
+-    out[1] = a1 * v0;
+-    out[2] = a2 * v1;
+-    out[3] = a3 * v1;
+-    return out;
+-};
+ 
+ /**
+- * Creates a matrix from a given angle
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2.identity(dest);
+- *     mat2.rotate(dest, dest, rad);
++ * Boxzoom start event. This event is emitted at the start of a box zoom interaction.
+  *
+- * @param {mat2} out mat2 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2} out
++ * @event boxzoomstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2.fromRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
+-    out[0] = c;
+-    out[1] = s;
+-    out[2] = -s;
+-    out[3] = c;
+-    return out;
+-}
+ 
+ /**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2.identity(dest);
+- *     mat2.scale(dest, dest, vec);
++ * Boxzoom end event. This event is emitted at the end of a box zoom interaction
+  *
+- * @param {mat2} out mat2 receiving operation result
+- * @param {vec2} v Scaling vector
+- * @returns {mat2} out
++ * @event boxzoomend
++ * @memberof Map
++ * @instance
++ * @type {Object}
++ * @property {Event} originalEvent the original DOM event
++ * @property {LngLatBounds} boxZoomBounds the bounds of the box zoom target
+  */
+-mat2.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = v[1];
+-    return out;
+-}
+ 
+ /**
+- * Returns a string representation of a mat2
++ * Boxzoom cancel event.  This event is emitted when the user cancels a box zoom interaction,
++ *   or when the box zoom does not meet the minimum size threshold.
+  *
+- * @param {mat2} mat matrix to represent as a string
+- * @returns {String} string representation of the matrix
++ * @event boxzoomcancel
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2.str = function (a) {
+-    return 'mat2(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+-};
+ 
+-/**
+- * Returns Frobenius norm of a mat2
+- *
+- * @param {mat2} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
+- */
+-mat2.frob = function (a) {
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2)))
+-};
++},{"../../geo/lng_lat_bounds":270,"../../util/dom":351,"../../util/util":362}],336:[function(require,module,exports){
++'use strict';
++
++module.exports = DoubleClickZoomHandler;
+ 
+ /**
+- * Returns L, D and U matrices (Lower triangular, Diagonal and Upper triangular) by factorizing the input matrix
+- * @param {mat2} L the lower triangular matrix 
+- * @param {mat2} D the diagonal matrix 
+- * @param {mat2} U the upper triangular matrix 
+- * @param {mat2} a the input matrix to factorize
++ * The `DoubleClickZoomHandler` allows a user to zoom the map around point by
++ * double clicking.
++ * @class DoubleClickZoomHandler
+  */
++function DoubleClickZoomHandler(map) {
++    this._map = map;
++    this._onDblClick = this._onDblClick.bind(this);
++}
+ 
+-mat2.LDU = function (L, D, U, a) { 
+-    L[2] = a[2]/a[0]; 
+-    U[0] = a[0]; 
+-    U[1] = a[1]; 
+-    U[3] = a[3] - L[2] * U[1]; 
+-    return [L, D, U];       
+-}; 
++DoubleClickZoomHandler.prototype = {
+ 
+-/**
+- * Adds two mat2's
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @returns {mat2} out
+- */
+-mat2.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    return out;
+-};
++    _enabled: false,
+ 
+-/**
+- * Subtracts matrix b from matrix a
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @returns {mat2} out
+- */
+-mat2.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    return out;
+-};
++    /**
++     * Returns the current enabled/disabled state of the "double click to zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-/**
+- * Alias for {@link mat2.subtract}
+- * @function
+- */
+-mat2.sub = mat2.subtract;
++    /**
++     * Enable the "double click to zoom" interaction.
++     * @example
++     * map.doubleClickZoom.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._map.on('dblclick', this._onDblClick);
++        this._enabled = true;
++    },
+ 
+-/**
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {mat2} a The first matrix.
+- * @param {mat2} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat2.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
+-};
++    /**
++     * Disable the "double click to zoom" interaction.
++     * @example
++     * map.doubleClickZoom.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._map.off('dblclick', this._onDblClick);
++        this._enabled = false;
++    },
+ 
+-/**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
+- *
+- * @param {mat2} a The first matrix.
+- * @param {mat2} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat2.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
++    _onDblClick: function (e) {
++        this._map.zoomTo(this._map.getZoom() +
++            (e.originalEvent.shiftKey ? -1 : 1), {around: e.lngLat});
++    }
+ };
+ 
+-/**
+- * Multiply each element of the matrix by a scalar.
+- *
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat2} out
+- */
+-mat2.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    return out;
+-};
++},{}],337:[function(require,module,exports){
++'use strict';
++
++var DOM = require('../../util/dom'),
++    util = require('../../util/util');
++
++module.exports = DragPanHandler;
++
++var inertiaLinearity = 0.3,
++    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
++    inertiaMaxSpeed = 1400, // px/s
++    inertiaDeceleration = 2500; // px/s^2
++
+ 
+ /**
+- * Adds two mat2's after multiplying each element of the second operand by a scalar value.
+- *
+- * @param {mat2} out the receiving vector
+- * @param {mat2} a the first operand
+- * @param {mat2} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat2} out
++ * The `DragPanHandler` allows a user to pan the map by clicking and dragging
++ * the cursor.
++ * @class DragPanHandler
+  */
+-mat2.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    return out;
+-};
++function DragPanHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-module.exports = mat2;
++    util.bindHandlers(this);
++}
+ 
+-},{"./common.js":364}],366:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++DragPanHandler.prototype = {
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    _enabled: false,
++    _active: false,
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++    /**
++     * Returns the current enabled/disabled state of the "drag to pan" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    /**
++     * Returns true if the "drag to pan" interaction is currently active, i.e. currently being used.
++     * @returns {boolean} active state
++     */
++    isActive: function () {
++        return this._active;
++    },
+ 
+-var glMatrix = require("./common.js");
++    /**
++     * Enable the "drag to pan" interaction.
++     * @example
++     * map.dragPan.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('mousedown', this._onDown);
++        this._el.addEventListener('touchstart', this._onDown);
++        this._enabled = true;
++    },
+ 
+-/**
+- * @class 2x3 Matrix
+- * @name mat2d
+- * 
+- * @description 
+- * A mat2d contains six elements defined as:
+- * <pre>
+- * [a, c, tx,
+- *  b, d, ty]
+- * </pre>
+- * This is a short form for the 3x3 matrix:
+- * <pre>
+- * [a, c, tx,
+- *  b, d, ty,
+- *  0, 0, 1]
+- * </pre>
+- * The last row is ignored so the array is shorter and operations are faster.
+- */
+-var mat2d = {};
++    /**
++     * Disable the "drag to pan" interaction.
++     * @example
++     * map.dragPan.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('mousedown', this._onDown);
++        this._el.removeEventListener('touchstart', this._onDown);
++        this._enabled = false;
++    },
+ 
+-/**
+- * Creates a new identity mat2d
+- *
+- * @returns {mat2d} a new 2x3 matrix
+- */
+-mat2d.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(6);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
+-};
++    _onDown: function (e) {
++        if (this._ignoreEvent(e)) return;
++        if (this.isActive()) return;
+ 
+-/**
+- * Creates a new mat2d initialized with values from an existing matrix
+- *
+- * @param {mat2d} a matrix to clone
+- * @returns {mat2d} a new 2x3 matrix
+- */
+-mat2d.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(6);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    return out;
+-};
++        if (e.touches) {
++            document.addEventListener('touchmove', this._onMove);
++            document.addEventListener('touchend', this._onTouchEnd);
++        } else {
++            document.addEventListener('mousemove', this._onMove);
++            document.addEventListener('mouseup', this._onMouseUp);
++        }
+ 
+-/**
+- * Copy the values from one mat2d to another
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the source matrix
+- * @returns {mat2d} out
+- */
+-mat2d.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    return out;
+-};
++        this._active = false;
++        this._startPos = this._pos = DOM.mousePos(this._el, e);
++        this._inertia = [[Date.now(), this._pos]];
++    },
++
++    _onMove: function (e) {
++        if (this._ignoreEvent(e)) return;
++
++        if (!this.isActive()) {
++            this._active = true;
++            this._fireEvent('dragstart', e);
++            this._fireEvent('movestart', e);
++        }
++
++        var pos = DOM.mousePos(this._el, e),
++            map = this._map;
++
++        map.stop();
++        this._drainInertiaBuffer();
++        this._inertia.push([Date.now(), pos]);
++
++        map.transform.setLocationAtPoint(map.transform.pointLocation(this._pos), pos);
++
++        this._fireEvent('drag', e);
++        this._fireEvent('move', e);
++
++        this._pos = pos;
++
++        e.preventDefault();
++    },
++
++    _onUp: function (e) {
++        if (!this.isActive()) return;
++
++        this._active = false;
++        this._fireEvent('dragend', e);
++        this._drainInertiaBuffer();
++
++        var finish = function() {
++            this._fireEvent('moveend', e);
++        }.bind(this);
++
++        var inertia = this._inertia;
++        if (inertia.length < 2) {
++            finish();
++            return;
++        }
++
++        var last = inertia[inertia.length - 1],
++            first = inertia[0],
++            flingOffset = last[1].sub(first[1]),
++            flingDuration = (last[0] - first[0]) / 1000;
++
++        if (flingDuration === 0 || last[1].equals(first[1])) {
++            finish();
++            return;
++        }
++
++        // calculate px/s velocity & adjust for increased initial animation speed when easing out
++        var velocity = flingOffset.mult(inertiaLinearity / flingDuration),
++            speed = velocity.mag(); // px/s
++
++        if (speed > inertiaMaxSpeed) {
++            speed = inertiaMaxSpeed;
++            velocity._unit()._mult(speed);
++        }
++
++        var duration = speed / (inertiaDeceleration * inertiaLinearity),
++            offset = velocity.mult(-duration / 2);
++
++        this._map.panBy(offset, {
++            duration: duration * 1000,
++            easing: inertiaEasing,
++            noMoveStart: true
++        }, { originalEvent: e });
++    },
++
++    _onMouseUp: function (e) {
++        if (this._ignoreEvent(e)) return;
++        this._onUp(e);
++        document.removeEventListener('mousemove', this._onMove);
++        document.removeEventListener('mouseup', this._onMouseUp);
++    },
++
++    _onTouchEnd: function (e) {
++        if (this._ignoreEvent(e)) return;
++        this._onUp(e);
++        document.removeEventListener('touchmove', this._onMove);
++        document.removeEventListener('touchend', this._onTouchEnd);
++    },
++
++    _fireEvent: function (type, e) {
++        return this._map.fire(type, { originalEvent: e });
++    },
++
++    _ignoreEvent: function (e) {
++        var map = this._map;
++
++        if (map.boxZoom && map.boxZoom.isActive()) return true;
++        if (map.dragRotate && map.dragRotate.isActive()) return true;
++        if (e.touches) {
++            return (e.touches.length > 1);
++        } else {
++            if (e.ctrlKey) return true;
++            var buttons = 1,  // left button
++                button = 0;   // left button
++            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
++        }
++    },
+ 
+-/**
+- * Set a mat2d to the identity matrix
+- *
+- * @param {mat2d} out the receiving matrix
+- * @returns {mat2d} out
+- */
+-mat2d.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
++    _drainInertiaBuffer: function () {
++        var inertia = this._inertia,
++            now = Date.now(),
++            cutoff = 160;   // msec
++
++        while (inertia.length > 0 && now - inertia[0][0] > cutoff) inertia.shift();
++    }
+ };
+ 
++
+ /**
+- * Create a new mat2d with the given values
++ * Drag start event. This event is emitted at the start of a user-initiated pan interaction.
+  *
+- * @param {Number} a Component A (index 0)
+- * @param {Number} b Component B (index 1)
+- * @param {Number} c Component C (index 2)
+- * @param {Number} d Component D (index 3)
+- * @param {Number} tx Component TX (index 4)
+- * @param {Number} ty Component TY (index 5)
+- * @returns {mat2d} A new mat2d
++ * @event dragstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2d.fromValues = function(a, b, c, d, tx, ty) {
+-    var out = new glMatrix.ARRAY_TYPE(6);
+-    out[0] = a;
+-    out[1] = b;
+-    out[2] = c;
+-    out[3] = d;
+-    out[4] = tx;
+-    out[5] = ty;
+-    return out;
+-};
+ 
+ /**
+- * Set the components of a mat2d to the given values
++ * Drag event. This event is emitted repeatedly during a user-initiated pan interaction.
+  *
+- * @param {mat2d} out the receiving matrix
+- * @param {Number} a Component A (index 0)
+- * @param {Number} b Component B (index 1)
+- * @param {Number} c Component C (index 2)
+- * @param {Number} d Component D (index 3)
+- * @param {Number} tx Component TX (index 4)
+- * @param {Number} ty Component TY (index 5)
+- * @returns {mat2d} out
++ * @event drag
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2d.set = function(out, a, b, c, d, tx, ty) {
+-    out[0] = a;
+-    out[1] = b;
+-    out[2] = c;
+-    out[3] = d;
+-    out[4] = tx;
+-    out[5] = ty;
+-    return out;
+-};
+ 
+ /**
+- * Inverts a mat2d
++ * Drag end event. This event is emitted at the end of a user-initiated pan interaction.
+  *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the source matrix
+- * @returns {mat2d} out
++ * @event dragend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2d.invert = function(out, a) {
+-    var aa = a[0], ab = a[1], ac = a[2], ad = a[3],
+-        atx = a[4], aty = a[5];
+ 
+-    var det = aa * ad - ab * ac;
+-    if(!det){
+-        return null;
+-    }
+-    det = 1.0 / det;
++},{"../../util/dom":351,"../../util/util":362}],338:[function(require,module,exports){
++'use strict';
+ 
+-    out[0] = ad * det;
+-    out[1] = -ab * det;
+-    out[2] = -ac * det;
+-    out[3] = aa * det;
+-    out[4] = (ac * aty - ad * atx) * det;
+-    out[5] = (ab * atx - aa * aty) * det;
+-    return out;
+-};
++var DOM = require('../../util/dom'),
++    Point = require('point-geometry'),
++    util = require('../../util/util');
+ 
+-/**
+- * Calculates the determinant of a mat2d
+- *
+- * @param {mat2d} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-mat2d.determinant = function (a) {
+-    return a[0] * a[3] - a[1] * a[2];
+-};
++module.exports = DragRotateHandler;
+ 
+-/**
+- * Multiplies two mat2d's
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @returns {mat2d} out
+- */
+-mat2d.multiply = function (out, a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
+-    out[0] = a0 * b0 + a2 * b1;
+-    out[1] = a1 * b0 + a3 * b1;
+-    out[2] = a0 * b2 + a2 * b3;
+-    out[3] = a1 * b2 + a3 * b3;
+-    out[4] = a0 * b4 + a2 * b5 + a4;
+-    out[5] = a1 * b4 + a3 * b5 + a5;
+-    return out;
+-};
++var inertiaLinearity = 0.25,
++    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
++    inertiaMaxSpeed = 180, // deg/s
++    inertiaDeceleration = 720; // deg/s^2
+ 
+-/**
+- * Alias for {@link mat2d.multiply}
+- * @function
+- */
+-mat2d.mul = mat2d.multiply;
+ 
+ /**
+- * Rotates a mat2d by the given angle
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2d} out
++ * The `DragRotateHandler` allows a user to rotate the map by clicking and
++ * dragging the cursor while holding the right mouse button or the `ctrl` key.
++ * @class DragRotateHandler
+  */
+-mat2d.rotate = function (out, a, rad) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        s = Math.sin(rad),
+-        c = Math.cos(rad);
+-    out[0] = a0 *  c + a2 * s;
+-    out[1] = a1 *  c + a3 * s;
+-    out[2] = a0 * -s + a2 * c;
+-    out[3] = a1 * -s + a3 * c;
+-    out[4] = a4;
+-    out[5] = a5;
+-    return out;
+-};
++function DragRotateHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-/**
+- * Scales the mat2d by the dimensions in the given vec2
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to translate
+- * @param {vec2} v the vec2 to scale the matrix by
+- * @returns {mat2d} out
+- **/
+-mat2d.scale = function(out, a, v) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        v0 = v[0], v1 = v[1];
+-    out[0] = a0 * v0;
+-    out[1] = a1 * v0;
+-    out[2] = a2 * v1;
+-    out[3] = a3 * v1;
+-    out[4] = a4;
+-    out[5] = a5;
+-    return out;
+-};
++    util.bindHandlers(this);
++}
+ 
+-/**
+- * Translates the mat2d by the dimensions in the given vec2
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to translate
+- * @param {vec2} v the vec2 to translate the matrix by
+- * @returns {mat2d} out
+- **/
+-mat2d.translate = function(out, a, v) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+-        v0 = v[0], v1 = v[1];
+-    out[0] = a0;
+-    out[1] = a1;
+-    out[2] = a2;
+-    out[3] = a3;
+-    out[4] = a0 * v0 + a2 * v1 + a4;
+-    out[5] = a1 * v0 + a3 * v1 + a5;
+-    return out;
+-};
++DragRotateHandler.prototype = {
+ 
+-/**
+- * Creates a matrix from a given angle
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2d.identity(dest);
+- *     mat2d.rotate(dest, dest, rad);
+- *
+- * @param {mat2d} out mat2d receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat2d} out
+- */
+-mat2d.fromRotation = function(out, rad) {
+-    var s = Math.sin(rad), c = Math.cos(rad);
+-    out[0] = c;
+-    out[1] = s;
+-    out[2] = -s;
+-    out[3] = c;
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
+-}
++    _enabled: false,
++    _active: false,
+ 
+-/**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2d.identity(dest);
+- *     mat2d.scale(dest, dest, vec);
+- *
+- * @param {mat2d} out mat2d receiving operation result
+- * @param {vec2} v Scaling vector
+- * @returns {mat2d} out
+- */
+-mat2d.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = v[1];
+-    out[4] = 0;
+-    out[5] = 0;
+-    return out;
+-}
++    /**
++     * Returns the current enabled/disabled state of the "drag to rotate" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-/**
+- * Creates a matrix from a vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat2d.identity(dest);
+- *     mat2d.translate(dest, dest, vec);
+- *
+- * @param {mat2d} out mat2d receiving operation result
+- * @param {vec2} v Translation vector
+- * @returns {mat2d} out
+- */
+-mat2d.fromTranslation = function(out, v) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    out[4] = v[0];
+-    out[5] = v[1];
+-    return out;
+-}
++    /**
++     * Returns true if the "drag to rotate" interaction is currently active, i.e. currently being used.
++     * @returns {boolean} active state
++     */
++    isActive: function () {
++        return this._active;
++    },
+ 
+-/**
+- * Returns a string representation of a mat2d
+- *
+- * @param {mat2d} a matrix to represent as a string
+- * @returns {String} string representation of the matrix
+- */
+-mat2d.str = function (a) {
+-    return 'mat2d(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
+-                    a[3] + ', ' + a[4] + ', ' + a[5] + ')';
+-};
++    /**
++     * Enable the "drag to rotate" interaction.
++     * @example
++     * map.dragRotate.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('mousedown', this._onDown);
++        this._enabled = true;
++    },
+ 
+-/**
+- * Returns Frobenius norm of a mat2d
+- *
+- * @param {mat2d} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
+- */
+-mat2d.frob = function (a) { 
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + 1))
+-}; 
++    /**
++     * Disable the "drag to rotate" interaction.
++     * @example
++     * map.dragRotate.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('mousedown', this._onDown);
++        this._enabled = false;
++    },
+ 
+-/**
+- * Adds two mat2d's
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @returns {mat2d} out
+- */
+-mat2d.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    out[4] = a[4] + b[4];
+-    out[5] = a[5] + b[5];
+-    return out;
+-};
++    _onDown: function (e) {
++        if (this._ignoreEvent(e)) return;
++        if (this.isActive()) return;
+ 
+-/**
+- * Subtracts matrix b from matrix a
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @returns {mat2d} out
+- */
+-mat2d.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    out[4] = a[4] - b[4];
+-    out[5] = a[5] - b[5];
+-    return out;
+-};
++        document.addEventListener('mousemove', this._onMove);
++        document.addEventListener('mouseup', this._onUp);
+ 
+-/**
+- * Alias for {@link mat2d.subtract}
+- * @function
+- */
+-mat2d.sub = mat2d.subtract;
++        this._active = false;
++        this._inertia = [[Date.now(), this._map.getBearing()]];
++        this._startPos = this._pos = DOM.mousePos(this._el, e);
++        this._center = this._map.transform.centerPoint;  // Center of rotation
++
++        // If the first click was too close to the center, move the center of rotation by 200 pixels
++        // in the direction of the click.
++        var startToCenter = this._startPos.sub(this._center),
++            startToCenterDist = startToCenter.mag();
++
++        if (startToCenterDist < 200) {
++            this._center = this._startPos.add(new Point(-200, 0)._rotate(startToCenter.angle()));
++        }
++
++        e.preventDefault();
++    },
++
++    _onMove: function (e) {
++        if (this._ignoreEvent(e)) return;
++
++        if (!this.isActive()) {
++            this._active = true;
++            this._fireEvent('rotatestart', e);
++            this._fireEvent('movestart', e);
++        }
++
++        var map = this._map;
++        map.stop();
++
++        var p1 = this._pos,
++            p2 = DOM.mousePos(this._el, e),
++            center = this._center,
++            bearingDiff = p1.sub(center).angleWith(p2.sub(center)) / Math.PI * 180,
++            bearing = map.getBearing() - bearingDiff,
++            inertia = this._inertia,
++            last = inertia[inertia.length - 1];
++
++        this._drainInertiaBuffer();
++        inertia.push([Date.now(), map._normalizeBearing(bearing, last[1])]);
++
++        map.transform.bearing = bearing;
++
++        this._fireEvent('rotate', e);
++        this._fireEvent('move', e);
++
++        this._pos = p2;
++    },
++
++    _onUp: function (e) {
++        if (this._ignoreEvent(e)) return;
++        document.removeEventListener('mousemove', this._onMove);
++        document.removeEventListener('mouseup', this._onUp);
++
++        if (!this.isActive()) return;
++
++        this._active = false;
++        this._fireEvent('rotateend', e);
++        this._drainInertiaBuffer();
++
++        var map = this._map,
++            mapBearing = map.getBearing(),
++            inertia = this._inertia;
++
++        var finish = function() {
++            if (Math.abs(mapBearing) < map.options.bearingSnap) {
++                map.resetNorth({noMoveStart: true}, { originalEvent: e });
++            } else {
++                this._fireEvent('moveend', e);
++            }
++        }.bind(this);
++
++        if (inertia.length < 2) {
++            finish();
++            return;
++        }
++
++        var first = inertia[0],
++            last = inertia[inertia.length - 1],
++            previous = inertia[inertia.length - 2],
++            bearing = map._normalizeBearing(mapBearing, previous[1]),
++            flingDiff = last[1] - first[1],
++            sign = flingDiff < 0 ? -1 : 1,
++            flingDuration = (last[0] - first[0]) / 1000;
++
++        if (flingDiff === 0 || flingDuration === 0) {
++            finish();
++            return;
++        }
++
++        var speed = Math.abs(flingDiff * (inertiaLinearity / flingDuration));  // deg/s
++        if (speed > inertiaMaxSpeed) {
++            speed = inertiaMaxSpeed;
++        }
++
++        var duration = speed / (inertiaDeceleration * inertiaLinearity),
++            offset = sign * speed * (duration / 2);
++
++        bearing += offset;
++
++        if (Math.abs(map._normalizeBearing(bearing, 0)) < map.options.bearingSnap) {
++            bearing = map._normalizeBearing(0, bearing);
++        }
++
++        map.rotateTo(bearing, {
++            duration: duration * 1000,
++            easing: inertiaEasing,
++            noMoveStart: true
++        }, { originalEvent: e });
++    },
++
++    _fireEvent: function (type, e) {
++        return this._map.fire(type, { originalEvent: e });
++    },
++
++    _ignoreEvent: function (e) {
++        var map = this._map;
++
++        if (map.boxZoom && map.boxZoom.isActive()) return true;
++        if (map.dragPan && map.dragPan.isActive()) return true;
++        if (e.touches) {
++            return (e.touches.length > 1);
++        } else {
++            var buttons = (e.ctrlKey ? 1 : 2),  // ? ctrl+left button : right button
++                button = (e.ctrlKey ? 0 : 2);   // ? ctrl+left button : right button
++            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
++        }
++    },
++
++    _drainInertiaBuffer: function () {
++        var inertia = this._inertia,
++            now = Date.now(),
++            cutoff = 160;   //msec
++
++        while (inertia.length > 0 && now - inertia[0][0] > cutoff)
++            inertia.shift();
++    }
+ 
+-/**
+- * Multiply each element of the matrix by a scalar.
+- *
+- * @param {mat2d} out the receiving matrix
+- * @param {mat2d} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat2d} out
+- */
+-mat2d.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    out[4] = a[4] * b;
+-    out[5] = a[5] * b;
+-    return out;
+ };
+ 
++
+ /**
+- * Adds two mat2d's after multiplying each element of the second operand by a scalar value.
++ * Rotate start event. This event is emitted at the start of a user-initiated rotate interaction.
+  *
+- * @param {mat2d} out the receiving vector
+- * @param {mat2d} a the first operand
+- * @param {mat2d} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat2d} out
++ * @event rotatestart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2d.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    out[4] = a[4] + (b[4] * scale);
+-    out[5] = a[5] + (b[5] * scale);
+-    return out;
+-};
+ 
+ /**
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
++ * Rotate event. This event is emitted repeatedly during a user-initiated rotate interaction.
+  *
+- * @param {mat2d} a The first matrix.
+- * @param {mat2d} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
++ * @event rotate
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2d.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5];
+-};
+ 
+ /**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
++ * Rotate end event. This event is emitted at the end of a user-initiated rotate interaction.
+  *
+- * @param {mat2d} a The first matrix.
+- * @param {mat2d} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
++ * @event rotateend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
+  */
+-mat2d.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
+-            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
+-            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)));
+-};
+-
+-module.exports = mat2d;
+-
+-},{"./common.js":364}],367:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++},{"../../util/dom":351,"../../util/util":362,"point-geometry":400}],339:[function(require,module,exports){
++'use strict';
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++module.exports = KeyboardHandler;
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
+ 
+-var glMatrix = require("./common.js");
++var panDelta = 80,
++    rotateDelta = 2,
++    pitchDelta = 5;
+ 
+ /**
+- * @class 3x3 Matrix
+- * @name mat3
++ * The `KeyboardHandler` allows a user to zoom, rotate, and pan the map using
++ * following keyboard shortcuts:
++ *  * `=` / `+`: increase zoom level by 1
++ *  * `Shift-=` / `Shift-+`: increase zoom level by 2
++ *  * `-`: decrease zoom level by 1
++ *  * `Shift--`: decrease zoom level by 2
++ *  * Arrow keys: pan by 80 pixels
++ *  * `Shift+⇢`: increase rotation by 2 degrees
++ *  * `Shift+⇠`: decrease rotation by 2 degrees
++ *  * `Shift+⇡`: increase pitch by 5 degrees
++ *  * `Shift+⇣`: decrease pitch by 5 degrees
++ * @class KeyboardHandler
+  */
+-var mat3 = {};
++function KeyboardHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-/**
+- * Creates a new identity mat3
+- *
+- * @returns {mat3} a new 3x3 matrix
+- */
+-mat3.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(9);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 1;
+-    out[5] = 0;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
+-};
++    this._onKeyDown = this._onKeyDown.bind(this);
++}
+ 
+-/**
+- * Copies the upper-left 3x3 values into the given mat3.
+- *
+- * @param {mat3} out the receiving 3x3 matrix
+- * @param {mat4} a   the source 4x4 matrix
+- * @returns {mat3} out
+- */
+-mat3.fromMat4 = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[4];
+-    out[4] = a[5];
+-    out[5] = a[6];
+-    out[6] = a[8];
+-    out[7] = a[9];
+-    out[8] = a[10];
+-    return out;
+-};
++KeyboardHandler.prototype = {
+ 
+-/**
+- * Creates a new mat3 initialized with values from an existing matrix
+- *
+- * @param {mat3} a matrix to clone
+- * @returns {mat3} a new 3x3 matrix
+- */
+-mat3.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(9);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    return out;
+-};
++    _enabled: false,
+ 
+-/**
+- * Copy the values from one mat3 to another
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
+- */
+-mat3.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    return out;
+-};
++    /**
++     * Returns the current enabled/disabled state of keyboard interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-/**
+- * Create a new mat3 with the given values
+- *
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m10 Component in column 1, row 0 position (index 3)
+- * @param {Number} m11 Component in column 1, row 1 position (index 4)
+- * @param {Number} m12 Component in column 1, row 2 position (index 5)
+- * @param {Number} m20 Component in column 2, row 0 position (index 6)
+- * @param {Number} m21 Component in column 2, row 1 position (index 7)
+- * @param {Number} m22 Component in column 2, row 2 position (index 8)
+- * @returns {mat3} A new mat3
+- */
+-mat3.fromValues = function(m00, m01, m02, m10, m11, m12, m20, m21, m22) {
+-    var out = new glMatrix.ARRAY_TYPE(9);
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m10;
+-    out[4] = m11;
+-    out[5] = m12;
+-    out[6] = m20;
+-    out[7] = m21;
+-    out[8] = m22;
+-    return out;
+-};
++    /**
++     * Enable the ability to interact with the map using keyboard input.
++     * @example
++     * map.keyboard.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('keydown', this._onKeyDown, false);
++        this._enabled = true;
++    },
+ 
+-/**
+- * Set the components of a mat3 to the given values
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m10 Component in column 1, row 0 position (index 3)
+- * @param {Number} m11 Component in column 1, row 1 position (index 4)
+- * @param {Number} m12 Component in column 1, row 2 position (index 5)
+- * @param {Number} m20 Component in column 2, row 0 position (index 6)
+- * @param {Number} m21 Component in column 2, row 1 position (index 7)
+- * @param {Number} m22 Component in column 2, row 2 position (index 8)
+- * @returns {mat3} out
+- */
+-mat3.set = function(out, m00, m01, m02, m10, m11, m12, m20, m21, m22) {
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m10;
+-    out[4] = m11;
+-    out[5] = m12;
+-    out[6] = m20;
+-    out[7] = m21;
+-    out[8] = m22;
+-    return out;
+-};
++    /**
++     * Disable the ability to interact with the map using keyboard input.
++     * @example
++     * map.keyboard.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('keydown', this._onKeyDown);
++        this._enabled = false;
++    },
+ 
+-/**
+- * Set a mat3 to the identity matrix
+- *
+- * @param {mat3} out the receiving matrix
+- * @returns {mat3} out
+- */
+-mat3.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 1;
+-    out[5] = 0;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
+-};
++    _onKeyDown: function (e) {
++        if (e.altKey || e.ctrlKey || e.metaKey) return;
+ 
+-/**
+- * Transpose the values of a mat3
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
+- */
+-mat3.transpose = function(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a01 = a[1], a02 = a[2], a12 = a[5];
+-        out[1] = a[3];
+-        out[2] = a[6];
+-        out[3] = a01;
+-        out[5] = a[7];
+-        out[6] = a02;
+-        out[7] = a12;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[3];
+-        out[2] = a[6];
+-        out[3] = a[1];
+-        out[4] = a[4];
+-        out[5] = a[7];
+-        out[6] = a[2];
+-        out[7] = a[5];
+-        out[8] = a[8];
++        var map = this._map,
++            eventData = { originalEvent: e };
++
++        switch (e.keyCode) {
++        case 61:
++        case 107:
++        case 171:
++        case 187:
++            map.zoomTo(Math.round(map.getZoom()) + (e.shiftKey ? 2 : 1), eventData);
++            break;
++
++        case 189:
++        case 109:
++        case 173:
++            map.zoomTo(Math.round(map.getZoom()) - (e.shiftKey ? 2 : 1), eventData);
++            break;
++
++        case 37:
++            if (e.shiftKey) {
++                map.easeTo({ bearing: map.getBearing() - rotateDelta }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([-panDelta, 0], eventData);
++            }
++            break;
++
++        case 39:
++            if (e.shiftKey) {
++                map.easeTo({ bearing: map.getBearing() + rotateDelta }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([panDelta, 0], eventData);
++            }
++            break;
++
++        case 38:
++            if (e.shiftKey) {
++                map.easeTo({ pitch: map.getPitch() + pitchDelta }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([0, -panDelta], eventData);
++            }
++            break;
++
++        case 40:
++            if (e.shiftKey) {
++                map.easeTo({ pitch: Math.max(map.getPitch() - pitchDelta, 0) }, eventData);
++            } else {
++                e.preventDefault();
++                map.panBy([0, panDelta], eventData);
++            }
++            break;
++        }
+     }
+-    
+-    return out;
+ };
+ 
++},{}],340:[function(require,module,exports){
++'use strict';
++
++var DOM = require('../../util/dom'),
++    browser = require('../../util/browser'),
++    util = require('../../util/util');
++
++module.exports = ScrollZoomHandler;
++
++
++var ua = typeof navigator !== 'undefined' ? navigator.userAgent.toLowerCase() : '',
++    firefox = ua.indexOf('firefox') !== -1,
++    safari = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') === -1;
++
++
+ /**
+- * Inverts a mat3
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
++ * The `ScrollZoomHandler` allows a user to zoom the map by scrolling.
++ * @class ScrollZoomHandler
+  */
+-mat3.invert = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
++function ScrollZoomHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-        b01 = a22 * a11 - a12 * a21,
+-        b11 = -a22 * a10 + a12 * a20,
+-        b21 = a21 * a10 - a11 * a20,
++    util.bindHandlers(this);
++}
+ 
+-        // Calculate the determinant
+-        det = a00 * b01 + a01 * b11 + a02 * b21;
++ScrollZoomHandler.prototype = {
+ 
+-    if (!det) { 
+-        return null; 
+-    }
+-    det = 1.0 / det;
++    _enabled: false,
++
++    /**
++     * Returns the current enabled/disabled state of the "scroll to zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
++
++    /**
++     * Enable the "scroll to zoom" interaction.
++     * @example
++     *   map.scrollZoom.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('wheel', this._onWheel, false);
++        this._el.addEventListener('mousewheel', this._onWheel, false);
++        this._enabled = true;
++    },
++
++    /**
++     * Disable the "scroll to zoom" interaction.
++     * @example
++     *   map.scrollZoom.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('wheel', this._onWheel);
++        this._el.removeEventListener('mousewheel', this._onWheel);
++        this._enabled = false;
++    },
++
++    _onWheel: function (e) {
++        var value;
++
++        if (e.type === 'wheel') {
++            value = e.deltaY;
++            // Firefox doubles the values on retina screens...
++            if (firefox && e.deltaMode === window.WheelEvent.DOM_DELTA_PIXEL) value /= browser.devicePixelRatio;
++            if (e.deltaMode === window.WheelEvent.DOM_DELTA_LINE) value *= 40;
++
++        } else if (e.type === 'mousewheel') {
++            value = -e.wheelDeltaY;
++            if (safari) value = value / 3;
++        }
++
++        var now = browser.now(),
++            timeDelta = now - (this._time || 0);
++
++        this._pos = DOM.mousePos(this._el, e);
++        this._time = now;
++
++        if (value !== 0 && (value % 4.000244140625) === 0) {
++            // This one is definitely a mouse wheel event.
++            this._type = 'wheel';
++            // Normalize this value to match trackpad.
++            value = Math.floor(value / 4);
++
++        } else if (value !== 0 && Math.abs(value) < 4) {
++            // This one is definitely a trackpad event because it is so small.
++            this._type = 'trackpad';
++
++        } else if (timeDelta > 400) {
++            // This is likely a new scroll action.
++            this._type = null;
++            this._lastValue = value;
++
++            // Start a timeout in case this was a singular event, and dely it by up to 40ms.
++            this._timeout = setTimeout(this._onTimeout, 40);
++
++        } else if (!this._type) {
++            // This is a repeating event, but we don't know the type of event just yet.
++            // If the delta per time is small, we assume it's a fast trackpad; otherwise we switch into wheel mode.
++            this._type = (Math.abs(timeDelta * value) < 200) ? 'trackpad' : 'wheel';
++
++            // Make sure our delayed event isn't fired again, because we accumulate
++            // the previous event (which was less than 40ms ago) into this event.
++            if (this._timeout) {
++                clearTimeout(this._timeout);
++                this._timeout = null;
++                value += this._lastValue;
++            }
++        }
++
++        // Slow down zoom if shift key is held for more precise zooming
++        if (e.shiftKey && value) value = value / 4;
++
++        // Only fire the callback if we actually know what type of scrolling device the user uses.
++        if (this._type) this._zoom(-value, e);
++
++        e.preventDefault();
++    },
++
++    _onTimeout: function () {
++        this._type = 'wheel';
++        this._zoom(-this._lastValue);
++    },
++
++    _zoom: function (delta, e) {
++        if (delta === 0) return;
++        var map = this._map;
++
++        // Scale by sigmoid of scroll wheel delta.
++        var scale = 2 / (1 + Math.exp(-Math.abs(delta / 100)));
++        if (delta < 0 && scale !== 0) scale = 1 / scale;
++
++        var fromScale = map.ease ? map.ease.to : map.transform.scale,
++            targetZoom = map.transform.scaleZoom(fromScale * scale);
+ 
+-    out[0] = b01 * det;
+-    out[1] = (-a22 * a01 + a02 * a21) * det;
+-    out[2] = (a12 * a01 - a02 * a11) * det;
+-    out[3] = b11 * det;
+-    out[4] = (a22 * a00 - a02 * a20) * det;
+-    out[5] = (-a12 * a00 + a02 * a10) * det;
+-    out[6] = b21 * det;
+-    out[7] = (-a21 * a00 + a01 * a20) * det;
+-    out[8] = (a11 * a00 - a01 * a10) * det;
+-    return out;
++        map.zoomTo(targetZoom, {
++            duration: 0,
++            around: map.unproject(this._pos),
++            delayEndEvents: 200
++        }, { originalEvent: e });
++    }
+ };
+ 
++
+ /**
+- * Calculates the adjugate of a mat3
++ * Zoom start event. This event is emitted just before the map begins a transition from one
++ * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the source matrix
+- * @returns {mat3} out
++ * @event zoomstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-mat3.adjoint = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8];
+-
+-    out[0] = (a11 * a22 - a12 * a21);
+-    out[1] = (a02 * a21 - a01 * a22);
+-    out[2] = (a01 * a12 - a02 * a11);
+-    out[3] = (a12 * a20 - a10 * a22);
+-    out[4] = (a00 * a22 - a02 * a20);
+-    out[5] = (a02 * a10 - a00 * a12);
+-    out[6] = (a10 * a21 - a11 * a20);
+-    out[7] = (a01 * a20 - a00 * a21);
+-    out[8] = (a00 * a11 - a01 * a10);
+-    return out;
+-};
+ 
+ /**
+- * Calculates the determinant of a mat3
++ * Zoom event. This event is emitted repeatedly during animated transitions from one zoom level to
++ * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat3} a the source matrix
+- * @returns {Number} determinant of a
++ * @event zoom
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-mat3.determinant = function (a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8];
+-
+-    return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);
+-};
+ 
+ /**
+- * Multiplies two mat3's
++ * Zoom end event. This event is emitted just after the map completes a transition from one
++ * zoom level to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @returns {mat3} out
++ * @event zoomend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-mat3.multiply = function (out, a, b) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
+ 
+-        b00 = b[0], b01 = b[1], b02 = b[2],
+-        b10 = b[3], b11 = b[4], b12 = b[5],
+-        b20 = b[6], b21 = b[7], b22 = b[8];
++},{"../../util/browser":348,"../../util/dom":351,"../../util/util":362}],341:[function(require,module,exports){
++'use strict';
+ 
+-    out[0] = b00 * a00 + b01 * a10 + b02 * a20;
+-    out[1] = b00 * a01 + b01 * a11 + b02 * a21;
+-    out[2] = b00 * a02 + b01 * a12 + b02 * a22;
++var DOM = require('../../util/dom'),
++    util = require('../../util/util');
+ 
+-    out[3] = b10 * a00 + b11 * a10 + b12 * a20;
+-    out[4] = b10 * a01 + b11 * a11 + b12 * a21;
+-    out[5] = b10 * a02 + b11 * a12 + b12 * a22;
++module.exports = TouchZoomRotateHandler;
+ 
+-    out[6] = b20 * a00 + b21 * a10 + b22 * a20;
+-    out[7] = b20 * a01 + b21 * a11 + b22 * a21;
+-    out[8] = b20 * a02 + b21 * a12 + b22 * a22;
+-    return out;
+-};
++var inertiaLinearity = 0.15,
++    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
++    inertiaDeceleration = 12, // scale / s^2
++    inertiaMaxSpeed = 2.5, // scale / s
++    significantScaleThreshold = 0.15,
++    significantRotateThreshold = 4;
+ 
+-/**
+- * Alias for {@link mat3.multiply}
+- * @function
+- */
+-mat3.mul = mat3.multiply;
+ 
+ /**
+- * Translate a mat3 by the given vector
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to translate
+- * @param {vec2} v vector to translate by
+- * @returns {mat3} out
++ * The `TouchZoomRotateHandler` allows a user to zoom and rotate the map by
++ * pinching on a touchscreen.
++ * @class TouchZoomRotateHandler
+  */
+-mat3.translate = function(out, a, v) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
+-        x = v[0], y = v[1];
++function TouchZoomRotateHandler(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-    out[0] = a00;
+-    out[1] = a01;
+-    out[2] = a02;
++    util.bindHandlers(this);
++}
+ 
+-    out[3] = a10;
+-    out[4] = a11;
+-    out[5] = a12;
++TouchZoomRotateHandler.prototype = {
+ 
+-    out[6] = x * a00 + y * a10 + a20;
+-    out[7] = x * a01 + y * a11 + a21;
+-    out[8] = x * a02 + y * a12 + a22;
+-    return out;
+-};
++    _enabled: false,
+ 
+-/**
+- * Rotates a mat3 by the given angle
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat3} out
+- */
+-mat3.rotate = function (out, a, rad) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2],
+-        a10 = a[3], a11 = a[4], a12 = a[5],
+-        a20 = a[6], a21 = a[7], a22 = a[8],
++    /**
++     * Returns the current enabled/disabled state of the "pinch to rotate and zoom" interaction.
++     * @returns {boolean} enabled state
++     */
++    isEnabled: function () {
++        return this._enabled;
++    },
+ 
+-        s = Math.sin(rad),
+-        c = Math.cos(rad);
++    /**
++     * Enable the "pinch to rotate and zoom" interaction.
++     * @example
++     *   map.touchZoomRotate.enable();
++     */
++    enable: function () {
++        if (this.isEnabled()) return;
++        this._el.addEventListener('touchstart', this._onStart, false);
++        this._enabled = true;
++    },
+ 
+-    out[0] = c * a00 + s * a10;
+-    out[1] = c * a01 + s * a11;
+-    out[2] = c * a02 + s * a12;
++    /**
++     * Disable the "pinch to rotate and zoom" interaction.
++     * @example
++     *   map.touchZoomRotate.disable();
++     */
++    disable: function () {
++        if (!this.isEnabled()) return;
++        this._el.removeEventListener('touchstart', this._onStart);
++        this._enabled = false;
++    },
+ 
+-    out[3] = c * a10 - s * a00;
+-    out[4] = c * a11 - s * a01;
+-    out[5] = c * a12 - s * a02;
++    /**
++     * Disable the "pinch to rotate" interaction, leaving the "pinch to zoom"
++     * interaction enabled.
++     * @example
++     *   map.touchZoomRotate.disableRotation();
++     */
++    disableRotation: function() {
++        this._rotationDisabled = true;
++    },
+ 
+-    out[6] = a20;
+-    out[7] = a21;
+-    out[8] = a22;
+-    return out;
+-};
++    /**
++     * Enable the "pinch to rotate" interaction, undoing a call to
++     * `disableRotation`.
++     * @example
++     *   map.touchZoomRotate.enable();
++     *   map.touchZoomRotate.enableRotation();
++     */
++    enableRotation: function() {
++        this._rotationDisabled = false;
++    },
+ 
+-/**
+- * Scales the mat3 by the dimensions in the given vec2
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to rotate
+- * @param {vec2} v the vec2 to scale the matrix by
+- * @returns {mat3} out
+- **/
+-mat3.scale = function(out, a, v) {
+-    var x = v[0], y = v[1];
++    _onStart: function (e) {
++        if (e.touches.length !== 2) return;
+ 
+-    out[0] = x * a[0];
+-    out[1] = x * a[1];
+-    out[2] = x * a[2];
++        var p0 = DOM.mousePos(this._el, e.touches[0]),
++            p1 = DOM.mousePos(this._el, e.touches[1]);
+ 
+-    out[3] = y * a[3];
+-    out[4] = y * a[4];
+-    out[5] = y * a[5];
++        this._startVec = p0.sub(p1);
++        this._startScale = this._map.transform.scale;
++        this._startBearing = this._map.transform.bearing;
++        this._gestureIntent = undefined;
++        this._inertia = [];
+ 
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    return out;
+-};
++        document.addEventListener('touchmove', this._onMove, false);
++        document.addEventListener('touchend', this._onEnd, false);
++    },
+ 
+-/**
+- * Creates a matrix from a vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat3.identity(dest);
+- *     mat3.translate(dest, dest, vec);
+- *
+- * @param {mat3} out mat3 receiving operation result
+- * @param {vec2} v Translation vector
+- * @returns {mat3} out
+- */
+-mat3.fromTranslation = function(out, v) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 1;
+-    out[5] = 0;
+-    out[6] = v[0];
+-    out[7] = v[1];
+-    out[8] = 1;
+-    return out;
+-}
++    _onMove: function (e) {
++        if (e.touches.length !== 2) return;
+ 
+-/**
+- * Creates a matrix from a given angle
+- * This is equivalent to (but much faster than):
+- *
+- *     mat3.identity(dest);
+- *     mat3.rotate(dest, dest, rad);
+- *
+- * @param {mat3} out mat3 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat3} out
+- */
+-mat3.fromRotation = function(out, rad) {
+-    var s = Math.sin(rad), c = Math.cos(rad);
++        var p0 = DOM.mousePos(this._el, e.touches[0]),
++            p1 = DOM.mousePos(this._el, e.touches[1]),
++            p = p0.add(p1).div(2),
++            vec = p0.sub(p1),
++            scale = vec.mag() / this._startVec.mag(),
++            bearing = this._rotationDisabled ? 0 : vec.angleWith(this._startVec) * 180 / Math.PI,
++            map = this._map;
+ 
+-    out[0] = c;
+-    out[1] = s;
+-    out[2] = 0;
++        // Determine 'intent' by whichever threshold is surpassed first,
++        // then keep that state for the duration of this gesture.
++        if (!this._gestureIntent) {
++            var scalingSignificantly = (Math.abs(1 - scale) > significantScaleThreshold),
++                rotatingSignificantly = (Math.abs(bearing) > significantRotateThreshold);
+ 
+-    out[3] = -s;
+-    out[4] = c;
+-    out[5] = 0;
++            if (rotatingSignificantly) {
++                this._gestureIntent = 'rotate';
++            } else if (scalingSignificantly) {
++                this._gestureIntent = 'zoom';
++            }
+ 
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
+-}
++            if (this._gestureIntent) {
++                this._startVec = vec;
++                this._startScale = map.transform.scale;
++                this._startBearing = map.transform.bearing;
++            }
+ 
+-/**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat3.identity(dest);
+- *     mat3.scale(dest, dest, vec);
++        } else {
++            var param = { duration: 0, around: map.unproject(p) };
++
++            if (this._gestureIntent === 'rotate') {
++                param.bearing = this._startBearing + bearing;
++            }
++            if (this._gestureIntent === 'zoom' || this._gestureIntent === 'rotate') {
++                param.zoom = map.transform.scaleZoom(this._startScale * scale);
++            }
++
++            map.stop();
++            this._drainInertiaBuffer();
++            this._inertia.push([Date.now(), scale, p]);
++
++            map.easeTo(param, { originalEvent: e });
++        }
++
++        e.preventDefault();
++    },
++
++    _onEnd: function (e) {
++        document.removeEventListener('touchmove', this._onMove);
++        document.removeEventListener('touchend', this._onEnd);
++        this._drainInertiaBuffer();
++
++        var inertia = this._inertia,
++            map = this._map;
++
++        if (inertia.length < 2) {
++            map.snapToNorth({}, { originalEvent: e });
++            return;
++        }
++
++        var last = inertia[inertia.length - 1],
++            first = inertia[0],
++            lastScale = map.transform.scaleZoom(this._startScale * last[1]),
++            firstScale = map.transform.scaleZoom(this._startScale * first[1]),
++            scaleOffset = lastScale - firstScale,
++            scaleDuration = (last[0] - first[0]) / 1000,
++            p = last[2];
++
++        if (scaleDuration === 0 || lastScale === firstScale) {
++            map.snapToNorth({}, { originalEvent: e });
++            return;
++        }
++
++        // calculate scale/s speed and adjust for increased initial animation speed when easing
++        var speed = scaleOffset * inertiaLinearity / scaleDuration; // scale/s
++
++        if (Math.abs(speed) > inertiaMaxSpeed) {
++            if (speed > 0) {
++                speed = inertiaMaxSpeed;
++            } else {
++                speed = -inertiaMaxSpeed;
++            }
++        }
++
++        var duration = Math.abs(speed / (inertiaDeceleration * inertiaLinearity)) * 1000,
++            targetScale = lastScale + speed * duration / 2000;
++
++        if (targetScale < 0) {
++            targetScale = 0;
++        }
++
++        map.easeTo({
++            zoom: targetScale,
++            duration: duration,
++            easing: inertiaEasing,
++            around: map.unproject(p)
++        }, { originalEvent: e });
++    },
++
++    _drainInertiaBuffer: function() {
++        var inertia = this._inertia,
++            now = Date.now(),
++            cutoff = 160; // msec
++
++        while (inertia.length > 2 && now - inertia[0][0] > cutoff) inertia.shift();
++    }
++};
++
++},{"../../util/dom":351,"../../util/util":362}],342:[function(require,module,exports){
++'use strict';
++
++/*
++ * Adds the map's position to its page's location hash.
++ * Passed as an option to the map object.
+  *
+- * @param {mat3} out mat3 receiving operation result
+- * @param {vec2} v Scaling vector
+- * @returns {mat3} out
++ * @class mapboxgl.Hash
++ * @returns {Hash} `this`
+  */
+-mat3.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
++module.exports = Hash;
+ 
+-    out[3] = 0;
+-    out[4] = v[1];
+-    out[5] = 0;
++var util = require('../util/util');
+ 
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 1;
+-    return out;
++function Hash() {
++    util.bindAll([
++        '_onHashChange',
++        '_updateHash'
++    ], this);
+ }
+ 
+-/**
+- * Copies the values from a mat2d into a mat3
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat2d} a the matrix to copy
+- * @returns {mat3} out
+- **/
+-mat3.fromMat2d = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = 0;
+-
+-    out[3] = a[2];
+-    out[4] = a[3];
+-    out[5] = 0;
++Hash.prototype = {
++    /*
++     * Map element to listen for coordinate changes
++     *
++     * @param {Object} map
++     * @returns {Hash} `this`
++     */
++    addTo: function(map) {
++        this._map = map;
++        window.addEventListener('hashchange', this._onHashChange, false);
++        this._map.on('moveend', this._updateHash);
++        return this;
++    },
+ 
+-    out[6] = a[4];
+-    out[7] = a[5];
+-    out[8] = 1;
+-    return out;
+-};
++    /*
++     * Removes hash
++     *
++     * @returns {Popup} `this`
++     */
++    remove: function() {
++        window.removeEventListener('hashchange', this._onHashChange, false);
++        this._map.off('moveend', this._updateHash);
++        delete this._map;
++        return this;
++    },
+ 
+-/**
+-* Calculates a 3x3 matrix from the given quaternion
+-*
+-* @param {mat3} out mat3 receiving operation result
+-* @param {quat} q Quaternion to create matrix from
+-*
+-* @returns {mat3} out
+-*/
+-mat3.fromQuat = function (out, q) {
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++    _onHashChange: function() {
++        var loc = location.hash.replace('#', '').split('/');
++        if (loc.length >= 3) {
++            this._map.jumpTo({
++                center: [+loc[2], +loc[1]],
++                zoom: +loc[0],
++                bearing: +(loc[3] || 0)
++            });
++            return true;
++        }
++        return false;
++    },
+ 
+-        xx = x * x2,
+-        yx = y * x2,
+-        yy = y * y2,
+-        zx = z * x2,
+-        zy = z * y2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++    _updateHash: function() {
++        var center = this._map.getCenter(),
++            zoom = this._map.getZoom(),
++            bearing = this._map.getBearing(),
++            precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2)),
+ 
+-    out[0] = 1 - yy - zz;
+-    out[3] = yx - wz;
+-    out[6] = zx + wy;
++            hash = '#' + (Math.round(zoom * 100) / 100) +
++                '/' + center.lat.toFixed(precision) +
++                '/' + center.lng.toFixed(precision) +
++                (bearing ? '/' + (Math.round(bearing * 10) / 10) : '');
+ 
+-    out[1] = yx + wz;
+-    out[4] = 1 - xx - zz;
+-    out[7] = zy - wx;
++        window.history.replaceState('', '', hash);
++    }
++};
+ 
+-    out[2] = zx - wy;
+-    out[5] = zy + wx;
+-    out[8] = 1 - xx - yy;
++},{"../util/util":362}],343:[function(require,module,exports){
++'use strict';
+ 
+-    return out;
++var handlers = {
++    scrollZoom: require('./handler/scroll_zoom'),
++    boxZoom: require('./handler/box_zoom'),
++    dragRotate: require('./handler/drag_rotate'),
++    dragPan: require('./handler/drag_pan'),
++    keyboard: require('./handler/keyboard'),
++    doubleClickZoom: require('./handler/dblclick_zoom'),
++    touchZoomRotate: require('./handler/touch_zoom_rotate')
+ };
+ 
+-/**
+-* Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix
+-*
+-* @param {mat3} out mat3 receiving operation result
+-* @param {mat4} a Mat4 to derive the normal matrix from
+-*
+-* @returns {mat3} out
+-*/
+-mat3.normalFromMat4 = function (out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++var DOM = require('../util/dom'),
++    util = require('../util/util'),
++    Point = require('point-geometry');
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32,
++module.exports = Interaction;
+ 
+-        // Calculate the determinant
+-        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++function Interaction(map) {
++    this._map = map;
++    this._el = map.getCanvasContainer();
+ 
+-    if (!det) { 
+-        return null; 
++    for (var name in handlers) {
++        map[name] = new handlers[name](map);
+     }
+-    det = 1.0 / det;
+ 
+-    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+-    out[1] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+-    out[2] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
++    util.bindHandlers(this);
++}
+ 
+-    out[3] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+-    out[4] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+-    out[5] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
++Interaction.prototype = {
++    enable: function () {
++        var options = this._map.options,
++            el = this._el;
+ 
+-    out[6] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+-    out[7] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+-    out[8] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
++        for (var name in handlers) {
++            if (options[name]) this._map[name].enable();
++        }
+ 
+-    return out;
+-};
++        el.addEventListener('mousedown', this._onMouseDown, false);
++        el.addEventListener('mouseup', this._onMouseUp, false);
++        el.addEventListener('mousemove', this._onMouseMove, false);
++        el.addEventListener('touchstart', this._onTouchStart, false);
++        el.addEventListener('touchend', this._onTouchEnd, false);
++        el.addEventListener('touchmove', this._onTouchMove, false);
++        el.addEventListener('touchcancel', this._onTouchCancel, false);
++        el.addEventListener('click', this._onClick, false);
++        el.addEventListener('dblclick', this._onDblClick, false);
++        el.addEventListener('contextmenu', this._onContextMenu, false);
++    },
+ 
+-/**
+- * Returns a string representation of a mat3
+- *
+- * @param {mat3} mat matrix to represent as a string
+- * @returns {String} string representation of the matrix
+- */
+-mat3.str = function (a) {
+-    return 'mat3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
+-                    a[3] + ', ' + a[4] + ', ' + a[5] + ', ' + 
+-                    a[6] + ', ' + a[7] + ', ' + a[8] + ')';
+-};
++    disable: function () {
++        var options = this._map.options,
++            el = this._el;
+ 
+-/**
+- * Returns Frobenius norm of a mat3
+- *
+- * @param {mat3} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
+- */
+-mat3.frob = function (a) {
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2)))
+-};
++        for (var name in handlers) {
++            if (options[name]) this._map[name].disable();
++        }
+ 
+-/**
+- * Adds two mat3's
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @returns {mat3} out
+- */
+-mat3.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    out[4] = a[4] + b[4];
+-    out[5] = a[5] + b[5];
+-    out[6] = a[6] + b[6];
+-    out[7] = a[7] + b[7];
+-    out[8] = a[8] + b[8];
+-    return out;
+-};
++        el.removeEventListener('mousedown', this._onMouseDown);
++        el.removeEventListener('mouseup', this._onMouseUp);
++        el.removeEventListener('mousemove', this._onMouseMove);
++        el.removeEventListener('touchstart', this._onTouchStart);
++        el.removeEventListener('touchend', this._onTouchEnd);
++        el.removeEventListener('touchmove', this._onTouchMove);
++        el.removeEventListener('touchcancel', this._onTouchCancel);
++        el.removeEventListener('click', this._onClick);
++        el.removeEventListener('dblclick', this._onDblClick);
++        el.removeEventListener('contextmenu', this._onContextMenu);
++    },
+ 
+-/**
+- * Subtracts matrix b from matrix a
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @returns {mat3} out
+- */
+-mat3.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    out[4] = a[4] - b[4];
+-    out[5] = a[5] - b[5];
+-    out[6] = a[6] - b[6];
+-    out[7] = a[7] - b[7];
+-    out[8] = a[8] - b[8];
+-    return out;
+-};
++    _onMouseDown: function (e) {
++        this._map.stop();
++        this._startPos = DOM.mousePos(this._el, e);
++        this._fireMouseEvent('mousedown', e);
++    },
+ 
+-/**
+- * Alias for {@link mat3.subtract}
+- * @function
+- */
+-mat3.sub = mat3.subtract;
++    _onMouseUp: function (e) {
++        var map = this._map,
++            rotating = map.dragRotate && map.dragRotate.isActive();
+ 
+-/**
+- * Multiply each element of the matrix by a scalar.
+- *
+- * @param {mat3} out the receiving matrix
+- * @param {mat3} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat3} out
+- */
+-mat3.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    out[4] = a[4] * b;
+-    out[5] = a[5] * b;
+-    out[6] = a[6] * b;
+-    out[7] = a[7] * b;
+-    out[8] = a[8] * b;
+-    return out;
+-};
++        if (this._contextMenuEvent && !rotating) {
++            this._fireMouseEvent('contextmenu', this._contextMenuEvent);
++        }
+ 
+-/**
+- * Adds two mat3's after multiplying each element of the second operand by a scalar value.
+- *
+- * @param {mat3} out the receiving vector
+- * @param {mat3} a the first operand
+- * @param {mat3} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat3} out
+- */
+-mat3.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    out[4] = a[4] + (b[4] * scale);
+-    out[5] = a[5] + (b[5] * scale);
+-    out[6] = a[6] + (b[6] * scale);
+-    out[7] = a[7] + (b[7] * scale);
+-    out[8] = a[8] + (b[8] * scale);
+-    return out;
+-};
++        this._contextMenuEvent = null;
++        this._fireMouseEvent('mouseup', e);
++    },
+ 
+-/*
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {mat3} a The first matrix.
+- * @param {mat3} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat3.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && 
+-           a[3] === b[3] && a[4] === b[4] && a[5] === b[5] &&
+-           a[6] === b[6] && a[7] === b[7] && a[8] === b[8];
+-};
++    _onMouseMove: function (e) {
++        var map = this._map,
++            el = this._el;
+ 
+-/**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
+- *
+- * @param {mat3} a The first matrix.
+- * @param {mat3} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat3.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5], a6 = a[6], a7 = a[7], a8 = a[8];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5], b6 = a[6], b7 = b[7], b8 = b[8];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
+-            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
+-            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
+-            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
+-            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
+-            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)));
+-};
++        if (map.dragPan && map.dragPan.isActive()) return;
++        if (map.dragRotate && map.dragRotate.isActive()) return;
+ 
++        var target = e.toElement || e.target;
++        while (target && target !== el) target = target.parentNode;
++        if (target !== el) return;
+ 
+-module.exports = mat3;
++        this._fireMouseEvent('mousemove', e);
++    },
+ 
+-},{"./common.js":364}],368:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++    _onTouchStart: function (e) {
++        this._map.stop();
++        this._fireTouchEvent('touchstart', e);
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++        if (!e.touches || e.touches.length > 1) return;
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++        if (!this._tapped) {
++            this._tapped = setTimeout(this._onTouchTimeout, 300);
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++        } else {
++            clearTimeout(this._tapped);
++            this._tapped = null;
++            this._fireMouseEvent('dblclick', e);
++        }
++    },
+ 
+-var glMatrix = require("./common.js");
++    _onTouchMove: function (e) {
++        this._fireTouchEvent('touchmove', e);
++    },
+ 
+-/**
+- * @class 4x4 Matrix
+- * @name mat4
+- */
+-var mat4 = {
+-  scalar: {},
+-  SIMD: {},
+-};
++    _onTouchEnd: function (e) {
++        this._fireTouchEvent('touchend', e);
++    },
+ 
+-/**
+- * Creates a new identity mat4
+- *
+- * @returns {mat4} a new 4x4 matrix
+- */
+-mat4.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(16);
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-};
++    _onTouchCancel: function (e) {
++        this._fireTouchEvent('touchcancel', e);
++    },
+ 
+-/**
+- * Creates a new mat4 initialized with values from an existing matrix
+- *
+- * @param {mat4} a matrix to clone
+- * @returns {mat4} a new 4x4 matrix
+- */
+-mat4.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(16);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    out[9] = a[9];
+-    out[10] = a[10];
+-    out[11] = a[11];
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++    _onTouchTimeout: function () {
++        this._tapped = null;
++    },
+ 
+-/**
+- * Copy the values from one mat4 to another
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-mat4.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    out[4] = a[4];
+-    out[5] = a[5];
+-    out[6] = a[6];
+-    out[7] = a[7];
+-    out[8] = a[8];
+-    out[9] = a[9];
+-    out[10] = a[10];
+-    out[11] = a[11];
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++    _onClick: function (e) {
++        var pos = DOM.mousePos(this._el, e);
+ 
+-/**
+- * Create a new mat4 with the given values
+- *
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m03 Component in column 0, row 3 position (index 3)
+- * @param {Number} m10 Component in column 1, row 0 position (index 4)
+- * @param {Number} m11 Component in column 1, row 1 position (index 5)
+- * @param {Number} m12 Component in column 1, row 2 position (index 6)
+- * @param {Number} m13 Component in column 1, row 3 position (index 7)
+- * @param {Number} m20 Component in column 2, row 0 position (index 8)
+- * @param {Number} m21 Component in column 2, row 1 position (index 9)
+- * @param {Number} m22 Component in column 2, row 2 position (index 10)
+- * @param {Number} m23 Component in column 2, row 3 position (index 11)
+- * @param {Number} m30 Component in column 3, row 0 position (index 12)
+- * @param {Number} m31 Component in column 3, row 1 position (index 13)
+- * @param {Number} m32 Component in column 3, row 2 position (index 14)
+- * @param {Number} m33 Component in column 3, row 3 position (index 15)
+- * @returns {mat4} A new mat4
+- */
+-mat4.fromValues = function(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
+-    var out = new glMatrix.ARRAY_TYPE(16);
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m03;
+-    out[4] = m10;
+-    out[5] = m11;
+-    out[6] = m12;
+-    out[7] = m13;
+-    out[8] = m20;
+-    out[9] = m21;
+-    out[10] = m22;
+-    out[11] = m23;
+-    out[12] = m30;
+-    out[13] = m31;
+-    out[14] = m32;
+-    out[15] = m33;
+-    return out;
+-};
++        if (pos.equals(this._startPos)) {
++            this._fireMouseEvent('click', e);
++        }
++    },
+ 
+-/**
+- * Set the components of a mat4 to the given values
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {Number} m00 Component in column 0, row 0 position (index 0)
+- * @param {Number} m01 Component in column 0, row 1 position (index 1)
+- * @param {Number} m02 Component in column 0, row 2 position (index 2)
+- * @param {Number} m03 Component in column 0, row 3 position (index 3)
+- * @param {Number} m10 Component in column 1, row 0 position (index 4)
+- * @param {Number} m11 Component in column 1, row 1 position (index 5)
+- * @param {Number} m12 Component in column 1, row 2 position (index 6)
+- * @param {Number} m13 Component in column 1, row 3 position (index 7)
+- * @param {Number} m20 Component in column 2, row 0 position (index 8)
+- * @param {Number} m21 Component in column 2, row 1 position (index 9)
+- * @param {Number} m22 Component in column 2, row 2 position (index 10)
+- * @param {Number} m23 Component in column 2, row 3 position (index 11)
+- * @param {Number} m30 Component in column 3, row 0 position (index 12)
+- * @param {Number} m31 Component in column 3, row 1 position (index 13)
+- * @param {Number} m32 Component in column 3, row 2 position (index 14)
+- * @param {Number} m33 Component in column 3, row 3 position (index 15)
+- * @returns {mat4} out
+- */
+-mat4.set = function(out, m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
+-    out[0] = m00;
+-    out[1] = m01;
+-    out[2] = m02;
+-    out[3] = m03;
+-    out[4] = m10;
+-    out[5] = m11;
+-    out[6] = m12;
+-    out[7] = m13;
+-    out[8] = m20;
+-    out[9] = m21;
+-    out[10] = m22;
+-    out[11] = m23;
+-    out[12] = m30;
+-    out[13] = m31;
+-    out[14] = m32;
+-    out[15] = m33;
+-    return out;
++    _onDblClick: function (e) {
++        this._fireMouseEvent('dblclick', e);
++        e.preventDefault();
++    },
++
++    _onContextMenu: function (e) {
++        this._contextMenuEvent = e;
++        e.preventDefault();
++    },
++
++    _fireMouseEvent: function (type, e) {
++        var pos = DOM.mousePos(this._el, e);
++
++        return this._map.fire(type, {
++            lngLat: this._map.unproject(pos),
++            point: pos,
++            originalEvent: e
++        });
++    },
++
++    _fireTouchEvent: function (type, e) {
++        var touches = DOM.touchPos(this._el, e),
++            singular = touches.reduce(function (prev, curr, i, arr) {
++                return prev.add(curr.div(arr.length));
++            }, new Point(0, 0));
++
++        return this._map.fire(type, {
++            lngLat: this._map.unproject(singular),
++            point: singular,
++            lngLats: touches.map(function(t) { return this._map.unproject(t); }, this),
++            points: touches,
++            originalEvent: e
++        });
++    }
+ };
+ 
+ 
+ /**
+- * Set a mat4 to the identity matrix
++ * When an event [fires]{@link #Evented.fire} as a result of a
++ * user interaction, the event will be called with an EventData
++ * object containing the original DOM event along with coordinates of
++ * the event target.
+  *
+- * @param {mat4} out the receiving matrix
+- * @returns {mat4} out
++ * @typedef {Object} EventData
++ * @property {Event} originalEvent The original DOM event
++ * @property {Point} point The pixel location of the event
++ * @property {LngLat} lngLat The geographic location of the event
++ * @example
++ * map.on('click', function(data) {
++ *   var e = data && data.originalEvent;
++ *   console.log('got click ' + (e ? 'button = ' + e.button : ''));
++ * });
+  */
+-mat4.identity = function(out) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-};
+ 
+ /**
+- * Transpose the values of a mat4 not using SIMD
++ * Mouse down event.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event mousedown
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [mousedown event](https://developer.mozilla.org/en-US/docs/Web/Events/mousedown)
+  */
+-mat4.scalar.transpose = function(out, a) {
+-    // If we are transposing ourselves we can skip a few steps but have to cache some values
+-    if (out === a) {
+-        var a01 = a[1], a02 = a[2], a03 = a[3],
+-            a12 = a[6], a13 = a[7],
+-            a23 = a[11];
+-
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a01;
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a02;
+-        out[9] = a12;
+-        out[11] = a[14];
+-        out[12] = a03;
+-        out[13] = a13;
+-        out[14] = a23;
+-    } else {
+-        out[0] = a[0];
+-        out[1] = a[4];
+-        out[2] = a[8];
+-        out[3] = a[12];
+-        out[4] = a[1];
+-        out[5] = a[5];
+-        out[6] = a[9];
+-        out[7] = a[13];
+-        out[8] = a[2];
+-        out[9] = a[6];
+-        out[10] = a[10];
+-        out[11] = a[14];
+-        out[12] = a[3];
+-        out[13] = a[7];
+-        out[14] = a[11];
+-        out[15] = a[15];
+-    }
+-
+-    return out;
+-};
+ 
+ /**
+- * Transpose the values of a mat4 using SIMD
++ * Mouse up event.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event mouseup
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [mouseup event](https://developer.mozilla.org/en-US/docs/Web/Events/mouseup)
+  */
+-mat4.SIMD.transpose = function(out, a) {
+-    var a0, a1, a2, a3,
+-        tmp01, tmp23,
+-        out0, out1, out2, out3;
+-
+-    a0 = SIMD.Float32x4.load(a, 0);
+-    a1 = SIMD.Float32x4.load(a, 4);
+-    a2 = SIMD.Float32x4.load(a, 8);
+-    a3 = SIMD.Float32x4.load(a, 12);
+-
+-    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
+-    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
+-    out0  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
+-    out1  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
+-    SIMD.Float32x4.store(out, 0,  out0);
+-    SIMD.Float32x4.store(out, 4,  out1);
+ 
+-    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
+-    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
+-    out2  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
+-    out3  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
+-    SIMD.Float32x4.store(out, 8,  out2);
+-    SIMD.Float32x4.store(out, 12, out3);
++/**
++ * Mouse move event.
++ *
++ * @event mousemove
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [mousemouse event](https://developer.mozilla.org/en-US/docs/Web/Events/mousemove)
++ */
+ 
+-    return out;
+-};
++/**
++ * Touch start event.
++ *
++ * @event touchstart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchstart event](https://developer.mozilla.org/en-US/docs/Web/Events/touchstart).
++ */
+ 
+ /**
+- * Transpse a mat4 using SIMD if available and enabled
++ * Touch end event.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event touchend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
+  */
+-mat4.transpose = glMatrix.USE_SIMD ? mat4.SIMD.transpose : mat4.scalar.transpose;
+ 
+ /**
+- * Inverts a mat4 not using SIMD
++ * Touch move event.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event touchmove
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchmove event](https://developer.mozilla.org/en-US/docs/Web/Events/touchmove).
+  */
+-mat4.scalar.invert = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32,
++/**
++ * Touch cancel event.
++ *
++ * @event touchcancel
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [touchcancel event](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel).
++ */
+ 
+-        // Calculate the determinant
+-        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
++/**
++ * Click event.
++ *
++ * @event click
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data: a [click event](https://developer.mozilla.org/en-US/docs/Web/Events/click)
++ */
+ 
+-    if (!det) {
+-        return null;
+-    }
+-    det = 1.0 / det;
++/**
++ * Double click event.
++ *
++ * @event dblclick
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data
++ */
+ 
+-    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+-    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+-    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+-    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
+-    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+-    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+-    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+-    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
+-    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+-    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+-    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+-    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
+-    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
+-    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
+-    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
+-    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
++/**
++ * Context menu event.
++ *
++ * @event contextmenu
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if available
++ */
+ 
+-    return out;
+-};
++/**
++ * Load event. This event is emitted immediately after all necessary resources have been downloaded
++ * and the first visually complete rendering has occurred.
++ *
++ * @event load
++ * @memberof Map
++ * @instance
++ * @type {Object}
++ */
+ 
+ /**
+- * Inverts a mat4 using SIMD
++ * Move start event. This event is emitted just before the map begins a transition from one
++ * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
+  *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * @event movestart
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
+  */
+-mat4.SIMD.invert = function(out, a) {
+-  var row0, row1, row2, row3,
+-      tmp1,
+-      minor0, minor1, minor2, minor3,
+-      det,
+-      a0 = SIMD.Float32x4.load(a, 0),
+-      a1 = SIMD.Float32x4.load(a, 4),
+-      a2 = SIMD.Float32x4.load(a, 8),
+-      a3 = SIMD.Float32x4.load(a, 12);
+ 
+-  // Compute matrix adjugate
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
+-  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
+-  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
+-  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
+-  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
+-  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
+-  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
++/**
++ * Move event. This event is emitted repeatedly during animated transitions from one view to
++ * another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
++ *
++ * @event move
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
++ */
+ 
+-  tmp1   = SIMD.Float32x4.mul(row2, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.mul(row1, tmp1);
+-  minor1 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
+-  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
+-  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
++/**
++ * Move end event. This event is emitted just after the map completes a transition from one
++ * view to another, either as a result of user interaction or the use of methods such as `Map#jumpTo`.
++ *
++ * @event moveend
++ * @memberof Map
++ * @instance
++ * @property {EventData} data Original event data, if fired interactively
++ */
+ 
+-  tmp1   = SIMD.Float32x4.mul(row1, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
+-  minor3 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
+-  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
++},{"../util/dom":351,"../util/util":362,"./handler/box_zoom":335,"./handler/dblclick_zoom":336,"./handler/drag_pan":337,"./handler/drag_rotate":338,"./handler/keyboard":339,"./handler/scroll_zoom":340,"./handler/touch_zoom_rotate":341,"point-geometry":400}],344:[function(require,module,exports){
++'use strict';
+ 
+-  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
+-  minor2 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
+-  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
++var Canvas = require('../util/canvas');
++var util = require('../util/util');
++var browser = require('../util/browser');
++var Evented = require('../util/evented');
++var DOM = require('../util/dom');
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
++var Style = require('../style/style');
++var AnimationLoop = require('../style/animation_loop');
++var Painter = require('../render/painter');
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
+-  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
++var Transform = require('../geo/transform');
++var Hash = require('./hash');
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
++var Interaction = require('./interaction');
+ 
+-  // Compute matrix determinant
+-  det   = SIMD.Float32x4.mul(row0, minor0);
+-  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 2, 3, 0, 1), det);
+-  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 1, 0, 3, 2), det);
+-  tmp1  = SIMD.Float32x4.reciprocalApproximation(det);
+-  det   = SIMD.Float32x4.sub(
+-               SIMD.Float32x4.add(tmp1, tmp1),
+-               SIMD.Float32x4.mul(det, SIMD.Float32x4.mul(tmp1, tmp1)));
+-  det   = SIMD.Float32x4.swizzle(det, 0, 0, 0, 0);
+-  if (!det) {
+-      return null;
+-  }
++var Camera = require('./camera');
++var LngLat = require('../geo/lng_lat');
++var LngLatBounds = require('../geo/lng_lat_bounds');
++var Point = require('point-geometry');
++var Attribution = require('./control/attribution');
+ 
+-  // Compute matrix inverse
+-  SIMD.Float32x4.store(out, 0,  SIMD.Float32x4.mul(det, minor0));
+-  SIMD.Float32x4.store(out, 4,  SIMD.Float32x4.mul(det, minor1));
+-  SIMD.Float32x4.store(out, 8,  SIMD.Float32x4.mul(det, minor2));
+-  SIMD.Float32x4.store(out, 12, SIMD.Float32x4.mul(det, minor3));
+-  return out;
+-}
++var defaultMinZoom = 0;
++var defaultMaxZoom = 20;
+ 
+ /**
+- * Inverts a mat4 using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
++ * Creates a map instance. This is usually the beginning of your map:
++ * you tell Mapbox GL JS where to put the map by specifying a `container`
++ * option, and the map's style with `style` and other attributes of the map,
++ * and in return Mapbox GL JS initializes the map on your page and returns
++ * a map variable that lets you programmatically call methods on the map.
++ * @class Map
++ * @param {Object} options
++ * @param {string|Element} options.container HTML element to initialize the map in (or element id as string)
++ * @param {number} [options.minZoom=0] Minimum zoom of the map
++ * @param {number} [options.maxZoom=20] Maximum zoom of the map
++ * @param {Object|string} [options.style] Map style. This must be an an object conforming to the schema described in the [style reference](https://mapbox.com/mapbox-gl-style-spec/), or a URL to a JSON style. To load a style from the Mapbox API, you can use a URL of the form `mapbox://styles/:owner/:style`, where `:owner` is your Mapbox account name and `:style` is the style ID. Or you can use one of the predefined Mapbox styles:
++ *   * `mapbox://styles/mapbox/basic-v8` - Simple and flexible starting template.
++ *   * `mapbox://styles/mapbox/bright-v8` - Template for complex custom basemaps.
++ *   * `mapbox://styles/mapbox/streets-v8` - A ready-to-use basemap, perfect for minor customization or incorporating your own data.
++ *   * `mapbox://styles/mapbox/light-v8` - Subtle light backdrop for data vizualizations.
++ *   * `mapbox://styles/mapbox/dark-v8` - Subtle dark backdrop for data vizualizations.
++ * @param {boolean} [options.hash=false] If `true`, the map will track and update the page URL according to map position
++ * @param {boolean} [options.interactive=true] If `false`, no mouse, touch, or keyboard listeners are attached to the map, so it will not respond to input
++ * @param {number} [options.bearingSnap=7] Snap to north threshold in degrees.
++ * @param {Array} [options.classes] Style class names with which to initialize the map
++ * @param {boolean} [options.attributionControl=true] If `true`, an attribution control will be added to the map.
++ * @param {boolean} [options.failIfMajorPerformanceCaveat=false] If `true`, map creation will fail if the implementation determines that the performance of the created WebGL context would be dramatically lower than expected.
++ * @param {boolean} [options.preserveDrawingBuffer=false] If `true`, The maps canvas can be exported to a PNG using `map.getCanvas().toDataURL();`. This is false by default as a performance optimization.
++ * @param {LngLatBounds|Array<Array<number>>} [options.maxBounds] If set, the map is constrained to the given bounds.
++ * @param {boolean} [options.scrollZoom=true] If `true`, enable the "scroll to zoom" interaction (see `ScrollZoomHandler`)
++ * @param {boolean} [options.boxZoom=true] If `true`, enable the "box zoom" interaction (see `BoxZoomHandler`)
++ * @param {boolean} [options.dragRotate=true] If `true`, enable the "drag to rotate" interaction (see `DragRotateHandler`).
++ * @param {boolean} [options.dragPan=true] If `true`, enable the "drag to pan" interaction (see `DragPanHandler`).
++ * @param {boolean} [options.keyboard=true] If `true`, enable keyboard shortcuts (see `KeyboardHandler`).
++ * @param {boolean} [options.doubleClickZoom=true] If `true`, enable the "double click to zoom" interaction (see `DoubleClickZoomHandler`).
++ * @param {boolean} [options.touchZoomRotate=true] If `true`, enable the "pinch to rotate and zoom" interaction (see `TouchZoomRotateHandler`).
++ * @example
++ * var map = new mapboxgl.Map({
++ *   container: 'map',
++ *   center: [-122.420679, 37.772537],
++ *   zoom: 13,
++ *   style: style_object,
++ *   hash: true
++ * });
+  */
+-mat4.invert = glMatrix.USE_SIMD ? mat4.SIMD.invert : mat4.scalar.invert;
++var Map = module.exports = function(options) {
+ 
+-/**
+- * Calculates the adjugate of a mat4 not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-mat4.scalar.adjoint = function(out, a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
++    options = util.inherit(this.options, options);
++    this._interactive = options.interactive;
++    this._failIfMajorPerformanceCaveat = options.failIfMajorPerformanceCaveat;
++    this._preserveDrawingBuffer = options.preserveDrawingBuffer;
+ 
+-    out[0]  =  (a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22));
+-    out[1]  = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));
+-    out[2]  =  (a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12));
+-    out[3]  = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));
+-    out[4]  = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));
+-    out[5]  =  (a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22));
+-    out[6]  = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));
+-    out[7]  =  (a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12));
+-    out[8]  =  (a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21));
+-    out[9]  = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));
+-    out[10] =  (a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11));
+-    out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));
+-    out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));
+-    out[13] =  (a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21));
+-    out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));
+-    out[15] =  (a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11));
+-    return out;
+-};
++    if (typeof options.container === 'string') {
++        this._container = document.getElementById(options.container);
++    } else {
++        this._container = options.container;
++    }
+ 
+-/**
+- * Calculates the adjugate of a mat4 using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+-mat4.SIMD.adjoint = function(out, a) {
+-  var a0, a1, a2, a3;
+-  var row0, row1, row2, row3;
+-  var tmp1;
+-  var minor0, minor1, minor2, minor3;
++    this.animationLoop = new AnimationLoop();
++    this.transform = new Transform(options.minZoom, options.maxZoom);
+ 
+-  var a0 = SIMD.Float32x4.load(a, 0);
+-  var a1 = SIMD.Float32x4.load(a, 4);
+-  var a2 = SIMD.Float32x4.load(a, 8);
+-  var a3 = SIMD.Float32x4.load(a, 12);
++    if (options.maxBounds) {
++        this.setMaxBounds(options.maxBounds);
++    }
++
++    util.bindAll([
++        '_forwardStyleEvent',
++        '_forwardSourceEvent',
++        '_forwardLayerEvent',
++        '_forwardTileEvent',
++        '_onStyleLoad',
++        '_onStyleChange',
++        '_onSourceAdd',
++        '_onSourceRemove',
++        '_onSourceUpdate',
++        '_onWindowResize',
++        'onError',
++        '_update',
++        '_render'
++    ], this);
++
++    this._setupContainer();
++    this._setupPainter();
++
++    this.on('move', this._update.bind(this, false));
++    this.on('zoom', this._update.bind(this, true));
++    this.on('moveend', function() {
++        this.animationLoop.set(300); // text fading
++        this._rerender();
++    }.bind(this));
++
++    if (typeof window !== 'undefined') {
++        window.addEventListener('resize', this._onWindowResize, false);
++    }
++
++    this.interaction = new Interaction(this);
++
++    if (options.interactive) {
++        this.interaction.enable();
++    }
+ 
+-  // Transpose the source matrix.  Sort of.  Not a true transpose operation
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
+-  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
+-  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
+-  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
++    this._hash = options.hash && (new Hash()).addTo(this);
++    // don't set position from options if set through hash
++    if (!this._hash || !this._hash._onHashChange()) {
++        this.jumpTo(options);
++    }
+ 
+-  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
+-  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
+-  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
+-  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);
++    this.stacks = {};
++    this._classes = [];
+ 
+-  tmp1   = SIMD.Float32x4.mul(row2, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.mul(row1, tmp1);
+-  minor1 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
+-  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
+-  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);
++    this.resize();
+ 
+-  tmp1   = SIMD.Float32x4.mul(row1, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
+-  minor3 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
+-  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);
++    if (options.classes) this.setClasses(options.classes);
++    if (options.style) this.setStyle(options.style);
++    if (options.attributionControl) this.addControl(new Attribution(options.attributionControl));
+ 
+-  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
+-  minor2 = SIMD.Float32x4.mul(row0, tmp1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
+-  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);
++    this.on('style.error', this.onError);
++    this.on('source.error', this.onError);
++    this.on('tile.error', this.onError);
++    this.on('layer.error', this.onError);
++};
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row1);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));
++util.extend(Map.prototype, Evented);
++util.extend(Map.prototype, Camera.prototype);
++util.extend(Map.prototype, /** @lends Map.prototype */{
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row3);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
+-  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
+-  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));
++    options: {
++        center: [0, 0],
++        zoom: 0,
++        bearing: 0,
++        pitch: 0,
+ 
+-  tmp1   = SIMD.Float32x4.mul(row0, row2);
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
+-  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
+-  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
+-  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
+-  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
+-  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);
++        minZoom: defaultMinZoom,
++        maxZoom: defaultMaxZoom,
+ 
+-  SIMD.Float32x4.store(out, 0,  minor0);
+-  SIMD.Float32x4.store(out, 4,  minor1);
+-  SIMD.Float32x4.store(out, 8,  minor2);
+-  SIMD.Float32x4.store(out, 12, minor3);
+-  return out;
+-};
++        interactive: true,
+ 
+-/**
+- * Calculates the adjugate of a mat4 using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the source matrix
+- * @returns {mat4} out
+- */
+- mat4.adjoint = glMatrix.USE_SIMD ? mat4.SIMD.adjoint : mat4.scalar.adjoint;
++        scrollZoom: true,
++        boxZoom: true,
++        dragRotate: true,
++        dragPan: true,
++        keyboard: true,
++        doubleClickZoom: true,
++        touchZoomRotate: true,
+ 
+-/**
+- * Calculates the determinant of a mat4
+- *
+- * @param {mat4} a the source matrix
+- * @returns {Number} determinant of a
+- */
+-mat4.determinant = function (a) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
++        bearingSnap: 7,
+ 
+-        b00 = a00 * a11 - a01 * a10,
+-        b01 = a00 * a12 - a02 * a10,
+-        b02 = a00 * a13 - a03 * a10,
+-        b03 = a01 * a12 - a02 * a11,
+-        b04 = a01 * a13 - a03 * a11,
+-        b05 = a02 * a13 - a03 * a12,
+-        b06 = a20 * a31 - a21 * a30,
+-        b07 = a20 * a32 - a22 * a30,
+-        b08 = a20 * a33 - a23 * a30,
+-        b09 = a21 * a32 - a22 * a31,
+-        b10 = a21 * a33 - a23 * a31,
+-        b11 = a22 * a33 - a23 * a32;
++        hash: false,
+ 
+-    // Calculate the determinant
+-    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+-};
++        attributionControl: true,
+ 
+-/**
+- * Multiplies two mat4's explicitly using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand, must be a Float32Array
+- * @param {mat4} b the second operand, must be a Float32Array
+- * @returns {mat4} out
+- */
+-mat4.SIMD.multiply = function (out, a, b) {
+-    var a0 = SIMD.Float32x4.load(a, 0);
+-    var a1 = SIMD.Float32x4.load(a, 4);
+-    var a2 = SIMD.Float32x4.load(a, 8);
+-    var a3 = SIMD.Float32x4.load(a, 12);
++        failIfMajorPerformanceCaveat: false,
++        preserveDrawingBuffer: false
++    },
+ 
+-    var b0 = SIMD.Float32x4.load(b, 0);
+-    var out0 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 1, 1, 1, 1), a1),
+-                       SIMD.Float32x4.add(
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 2, 2, 2, 2), a2),
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 0, out0);
++    /**
++     * Adds a control to the map, calling `control.addTo(this)`.
++     *
++     * @param {Control} control
++     * @returns {Map} `this`
++     */
++    addControl: function(control) {
++        control.addTo(this);
++        return this;
++    },
+ 
+-    var b1 = SIMD.Float32x4.load(b, 4);
+-    var out1 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 1, 1, 1, 1), a1),
+-                       SIMD.Float32x4.add(
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 2, 2, 2, 2), a2),
+-                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 4, out1);
++    /**
++     * Adds a style class to a map.
++     *
++     * @param {string} klass name of style class
++     * @param {StyleOptions} [options]
++     * @fires change
++     * @returns {Map} `this`
++     */
++    addClass: function(klass, options) {
++        if (this._classes.indexOf(klass) >= 0 || klass === '') return this;
++        this._classes.push(klass);
++        this._classOptions = options;
+ 
+-    var b2 = SIMD.Float32x4.load(b, 8);
+-    var out2 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 1, 1, 1, 1), a1),
+-                       SIMD.Float32x4.add(
+-                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 2, 2, 2, 2), a2),
+-                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 8, out2);
++        if (this.style) this.style.updateClasses();
++        return this._update(true);
++    },
+ 
+-    var b3 = SIMD.Float32x4.load(b, 12);
+-    var out3 = SIMD.Float32x4.add(
+-                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 0, 0, 0, 0), a0),
+-                   SIMD.Float32x4.add(
+-                        SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 1, 1, 1, 1), a1),
+-                        SIMD.Float32x4.add(
+-                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 2, 2, 2, 2), a2),
+-                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 3, 3, 3, 3), a3))));
+-    SIMD.Float32x4.store(out, 12, out3);
++    /**
++     * Removes a style class from a map.
++     *
++     * @param {string} klass name of style class
++     * @param {StyleOptions} [options]
++     * @fires change
++     * @returns {Map} `this`
++     */
++    removeClass: function(klass, options) {
++        var i = this._classes.indexOf(klass);
++        if (i < 0 || klass === '') return this;
++        this._classes.splice(i, 1);
++        this._classOptions = options;
+ 
+-    return out;
+-};
++        if (this.style) this.style.updateClasses();
++        return this._update(true);
++    },
+ 
+-/**
+- * Multiplies two mat4's explicitly not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.scalar.multiply = function (out, a, b) {
+-    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+-        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+-        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+-        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
++    /**
++     * Helper method to add more than one class.
++     *
++     * @param {Array<string>} klasses An array of class names
++     * @param {StyleOptions} [options]
++     * @fires change
++     * @returns {Map} `this`
++     */
++    setClasses: function(klasses, options) {
++        var uniqueClasses = {};
++        for (var i = 0; i < klasses.length; i++) {
++            if (klasses[i] !== '') uniqueClasses[klasses[i]] = true;
++        }
++        this._classes = Object.keys(uniqueClasses);
++        this._classOptions = options;
+ 
+-    // Cache only the current line of the second matrix
+-    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++        if (this.style) this.style.updateClasses();
++        return this._update(true);
++    },
+ 
+-    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
+-    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    /**
++     * Check whether a style class is active.
++     *
++     * @param {string} klass Name of style class
++     * @returns {boolean}
++     */
++    hasClass: function(klass) {
++        return this._classes.indexOf(klass) >= 0;
++    },
+ 
+-    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
+-    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
++    /**
++     * Return an array of the current active style classes.
++     *
++     * @returns {boolean}
++     */
++    getClasses: function() {
++        return this._classes;
++    },
+ 
+-    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
+-    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+-    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+-    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+-    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+-    return out;
+-};
++    /**
++     * Detect the map's new width and height and resize it. Given
++     * the `container` of the map specified in the Map constructor,
++     * this reads the new width from the DOM: so this method is often
++     * called after the map's container is resized by another script
++     * or the map is shown after being initially hidden with CSS.
++     *
++     * @returns {Map} `this`
++     */
++    resize: function() {
++        var width = 0, height = 0;
+ 
+-/**
+- * Multiplies two mat4's using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.multiply = glMatrix.USE_SIMD ? mat4.SIMD.multiply : mat4.scalar.multiply;
++        if (this._container) {
++            width = this._container.offsetWidth || 400;
++            height = this._container.offsetHeight || 300;
++        }
+ 
+-/**
+- * Alias for {@link mat4.multiply}
+- * @function
+- */
+-mat4.mul = mat4.multiply;
++        this._canvas.resize(width, height);
++        this.transform.resize(width, height);
++        this.painter.resize(width, height);
+ 
+-/**
+- * Translate a mat4 by the given vector not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
+- */
+-mat4.scalar.translate = function (out, a, v) {
+-    var x = v[0], y = v[1], z = v[2],
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23;
++        return this
++            .fire('movestart')
++            .fire('move')
++            .fire('resize')
++            .fire('moveend');
++    },
+ 
+-    if (a === out) {
+-        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
+-        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
+-        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
+-        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
+-    } else {
+-        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++    /**
++     * Get the map's geographical bounds.
++     *
++     * @returns {LngLatBounds}
++     */
++    getBounds: function() {
++        var bounds = new LngLatBounds(
++            this.transform.pointLocation(new Point(0, 0)),
++            this.transform.pointLocation(this.transform.size));
+ 
+-        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
+-        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
+-        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
++        if (this.transform.angle || this.transform.pitch) {
++            bounds.extend(this.transform.pointLocation(new Point(this.transform.size.x, 0)));
++            bounds.extend(this.transform.pointLocation(new Point(0, this.transform.size.y)));
++        }
+ 
+-        out[12] = a00 * x + a10 * y + a20 * z + a[12];
+-        out[13] = a01 * x + a11 * y + a21 * z + a[13];
+-        out[14] = a02 * x + a12 * y + a22 * z + a[14];
+-        out[15] = a03 * x + a13 * y + a23 * z + a[15];
+-    }
++        return bounds;
++    },
+ 
+-    return out;
+-};
++    /**
++     * Set constraint on the map's geographical bounds. Pan or zoom operations that would result in
++     * displaying regions that fall outside of the bounds instead result in displaying the map at the
++     * closest point and/or zoom level of the requested operation that is within the max bounds.
++     *
++     * @param {LngLatBounds | Array<Array<number>> | null | undefined} lnglatbounds Desired max bounds of the map. If null or undefined, function removes any bounds constraints on the map.
++     * @returns {Map} `this`
++     */
++    setMaxBounds: function (lnglatbounds) {
++        if (lnglatbounds) {
++            var b = LngLatBounds.convert(lnglatbounds);
++            this.transform.lngRange = [b.getWest(), b.getEast()];
++            this.transform.latRange = [b.getSouth(), b.getNorth()];
++            this.transform._constrain();
++            this._update();
++        } else if (lnglatbounds === null || lnglatbounds === undefined) {
++            this.transform.lngRange = [];
++            this.transform.latRange = [];
++            this._update();
++        }
++        return this;
+ 
+-/**
+- * Translates a mat4 by the given vector using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.translate = function (out, a, v) {
+-    var a0 = SIMD.Float32x4.load(a, 0),
+-        a1 = SIMD.Float32x4.load(a, 4),
+-        a2 = SIMD.Float32x4.load(a, 8),
+-        a3 = SIMD.Float32x4.load(a, 12),
+-        vec = SIMD.Float32x4(v[0], v[1], v[2] , 0);
++    },
++    /**
++     * Set the map's minimum zoom level, and zooms map to that level if it is
++     * currently below it. If no parameter provided, unsets the current
++     * minimum zoom (sets it to 0)
++     *
++     * @param {number} minZoom Minimum zoom level. Must be between 0 and 20.
++     * @returns {Map} `this
++     */
++    setMinZoom: function(minZoom) {
+ 
+-    if (a !== out) {
+-        out[0] = a[0]; out[1] = a[1]; out[2] = a[2]; out[3] = a[3];
+-        out[4] = a[4]; out[5] = a[5]; out[6] = a[6]; out[7] = a[7];
+-        out[8] = a[8]; out[9] = a[9]; out[10] = a[10]; out[11] = a[11];
+-    }
++        minZoom = minZoom === null || minZoom === undefined ? defaultMinZoom : minZoom;
+ 
+-    a0 = SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0));
+-    a1 = SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1));
+-    a2 = SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2));
++        if (minZoom >= defaultMinZoom && minZoom <= this.transform.maxZoom) {
++            this.transform.minZoom = minZoom;
++            this._update();
+ 
+-    var t0 = SIMD.Float32x4.add(a0, SIMD.Float32x4.add(a1, SIMD.Float32x4.add(a2, a3)));
+-    SIMD.Float32x4.store(out, 12, t0);
++            if (this.getZoom() < minZoom) this.setZoom(minZoom);
+ 
+-    return out;
+-};
++            return this;
+ 
+-/**
+- * Translates a mat4 by the given vector using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to translate
+- * @param {vec3} v vector to translate by
+- * @returns {mat4} out
+- */
+-mat4.translate = glMatrix.USE_SIMD ? mat4.SIMD.translate : mat4.scalar.translate;
++        } else throw new Error('minZoom must be between ' + defaultMinZoom + ' and the current maxZoom, inclusive');
++    },
+ 
+-/**
+- * Scales the mat4 by the dimensions in the given vec3 not using vectorization
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- **/
+-mat4.scalar.scale = function(out, a, v) {
+-    var x = v[0], y = v[1], z = v[2];
++    /**
++     * Set the map's maximum zoom level, and zooms map to that level if it is
++     * currently above it. If no parameter provided, unsets the current
++     * maximum zoom (sets it to 20)
++     * @param {number} maxZoom Maximum zoom level. Must be between 0 and 20.
++     * @returns {Map} `this`
++     */
++    setMaxZoom: function(maxZoom) {
+ 
+-    out[0] = a[0] * x;
+-    out[1] = a[1] * x;
+-    out[2] = a[2] * x;
+-    out[3] = a[3] * x;
+-    out[4] = a[4] * y;
+-    out[5] = a[5] * y;
+-    out[6] = a[6] * y;
+-    out[7] = a[7] * y;
+-    out[8] = a[8] * z;
+-    out[9] = a[9] * z;
+-    out[10] = a[10] * z;
+-    out[11] = a[11] * z;
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++        maxZoom = maxZoom === null || maxZoom === undefined ? defaultMaxZoom : maxZoom;
+ 
+-/**
+- * Scales the mat4 by the dimensions in the given vec3 using vectorization
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- **/
+-mat4.SIMD.scale = function(out, a, v) {
+-    var a0, a1, a2;
+-    var vec = SIMD.Float32x4(v[0], v[1], v[2], 0);
++        if (maxZoom >= this.transform.minZoom && maxZoom <= defaultMaxZoom) {
++            this.transform.maxZoom = maxZoom;
++            this._update();
++
++            if (this.getZoom() > maxZoom) this.setZoom(maxZoom);
+ 
+-    a0 = SIMD.Float32x4.load(a, 0);
+-    SIMD.Float32x4.store(
+-        out, 0, SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0)));
++            return this;
+ 
+-    a1 = SIMD.Float32x4.load(a, 4);
+-    SIMD.Float32x4.store(
+-        out, 4, SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1)));
++        } else throw new Error('maxZoom must be between the current minZoom and ' + defaultMaxZoom + ', inclusive');
++    },
++    /**
++     * Get pixel coordinates relative to the map container, given a geographical
++     * location.
++     *
++     * @param {LngLat} lnglat
++     * @returns {Object} `x` and `y` coordinates
++     */
++    project: function(lnglat) {
++        return this.transform.locationPoint(LngLat.convert(lnglat));
++    },
+ 
+-    a2 = SIMD.Float32x4.load(a, 8);
+-    SIMD.Float32x4.store(
+-        out, 8, SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2)));
++    /**
++     * Get geographical coordinates, given pixel coordinates.
++     *
++     * @param {Array<number>} point [x, y] pixel coordinates
++     * @returns {LngLat}
++     */
++    unproject: function(point) {
++        return this.transform.pointLocation(Point.convert(point));
++    },
+ 
+-    out[12] = a[12];
+-    out[13] = a[13];
+-    out[14] = a[14];
+-    out[15] = a[15];
+-    return out;
+-};
++    /**
++     * Query rendered features within a point or rectangle.
++     *
++     * @param {Point|Array<number>|Array<Point>|Array<Array<number>>} [pointOrBox] Either [x, y] pixel coordinates of a point, or [[x1, y1], [x2, y2]] pixel coordinates of opposite corners of bounding rectangle. Optional: use entire viewport if omitted.
++     * @param {Object} params
++     * @param {Array<string>} [params.layers] Only query features from layers with these layer IDs.
++     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
++     *
++     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features
++     * matching the query parameters. The GeoJSON properties of each feature are taken from
++     * the original source. Each feature object also contains a top-level `layer`
++     * property whose value is an object representing the style layer to which the
++     * feature belongs. Layout and paint properties in this object contain values
++     * which are fully evaluated for the given zoom level and feature.
++     *
++     * @example
++     * var features = map.queryRenderedFeatures([20, 35], { layers: ['my-layer-name'] });
++     *
++     * @example
++     * var features = map.queryRenderedFeatures([[10, 20], [30, 50]], { layers: ['my-layer-name'] });
++     */
++    queryRenderedFeatures: function(pointOrBox, params) {
++        if (!(pointOrBox instanceof Point || Array.isArray(pointOrBox))) {
++            params = pointOrBox;
++            pointOrBox = undefined;
++        }
++        var queryGeometry = this._makeQueryGeometry(pointOrBox);
++        return this.style.queryRenderedFeatures(queryGeometry, params, this.transform.zoom, this.transform.angle);
++    },
+ 
+-/**
+- * Scales the mat4 by the dimensions in the given vec3 using SIMD if available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {vec3} v the vec3 to scale the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scale = glMatrix.USE_SIMD ? mat4.SIMD.scale : mat4.scalar.scale;
++    _makeQueryGeometry: function(pointOrBox) {
++        if (pointOrBox === undefined) {
++            // bounds was omitted: use full viewport
++            pointOrBox = [
++                Point.convert([0, 0]),
++                Point.convert([this.transform.width, this.transform.height])
++            ];
++        }
+ 
+-/**
+- * Rotates a mat4 by the given angle around the given axis
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @param {vec3} axis the axis to rotate around
+- * @returns {mat4} out
+- */
+-mat4.rotate = function (out, a, rad, axis) {
+-    var x = axis[0], y = axis[1], z = axis[2],
+-        len = Math.sqrt(x * x + y * y + z * z),
+-        s, c, t,
+-        a00, a01, a02, a03,
+-        a10, a11, a12, a13,
+-        a20, a21, a22, a23,
+-        b00, b01, b02,
+-        b10, b11, b12,
+-        b20, b21, b22;
++        var queryGeometry;
++        var isPoint = pointOrBox instanceof Point || typeof pointOrBox[0] === 'number';
+ 
+-    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
++        if (isPoint) {
++            var point = Point.convert(pointOrBox);
++            queryGeometry = [point];
++        } else {
++            var box = [Point.convert(pointOrBox[0]), Point.convert(pointOrBox[1])];
++            queryGeometry = [
++                box[0],
++                new Point(box[1].x, box[0].y),
++                box[1],
++                new Point(box[0].x, box[1].y),
++                box[0]
++            ];
++        }
+ 
+-    len = 1 / len;
+-    x *= len;
+-    y *= len;
+-    z *= len;
++        queryGeometry = queryGeometry.map(function(p) {
++            return this.transform.pointCoordinate(p);
++        }.bind(this));
+ 
+-    s = Math.sin(rad);
+-    c = Math.cos(rad);
+-    t = 1 - c;
++        return queryGeometry;
++    },
+ 
+-    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+-    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+-    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
++    /**
++     * Get data from vector tiles as an array of GeoJSON Features.
++     *
++     * @param {string} sourceID source ID
++     * @param {Object} params
++     * @param {string} [params.sourceLayer] The name of the vector tile layer to get features from.
++     * @param {Array} [params.filter] A mapbox-gl-style-spec filter.
++     *
++     * @returns {Array<Object>} features - An array of [GeoJSON](http://geojson.org/) features matching the query parameters. The GeoJSON properties of each feature are taken from the original source. Each feature object also contains a top-level `layer` property whose value is an object representing the style layer to which the feature belongs. Layout and paint properties in this object contain values which are fully evaluated for the given zoom level and feature.
++     */
++    querySourceFeatures: function(sourceID, params) {
++        return this.style.querySourceFeatures(sourceID, params);
++    },
+ 
+-    // Construct the elements of the rotation matrix
+-    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
+-    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
+-    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
++    /**
++     * Replaces the map's style object with a new value. Unlike the `style`
++     * option in the Map constructor, this method only accepts an object
++     * of a new style, not a URL string.
++     *
++     * @param {Object} style A style object formatted as JSON
++     * @returns {Map} `this`
++     */
++    setStyle: function(style) {
++        if (this.style) {
++            this.style
++                .off('load', this._onStyleLoad)
++                .off('error', this._forwardStyleEvent)
++                .off('change', this._onStyleChange)
++                .off('source.add', this._onSourceAdd)
++                .off('source.remove', this._onSourceRemove)
++                .off('source.load', this._onSourceUpdate)
++                .off('source.error', this._forwardSourceEvent)
++                .off('source.change', this._onSourceUpdate)
++                .off('layer.add', this._forwardLayerEvent)
++                .off('layer.remove', this._forwardLayerEvent)
++                .off('layer.error', this._forwardLayerEvent)
++                .off('tile.add', this._forwardTileEvent)
++                .off('tile.remove', this._forwardTileEvent)
++                .off('tile.load', this._update)
++                .off('tile.error', this._forwardTileEvent)
++                .off('tile.stats', this._forwardTileEvent)
++                ._remove();
+ 
+-    // Perform rotation-specific matrix multiplication
+-    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
+-    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
+-    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
+-    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
+-    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
+-    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
+-    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
+-    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
+-    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
+-    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
+-    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
+-    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
++            this.off('rotate', this.style._redoPlacement);
++            this.off('pitch', this.style._redoPlacement);
++        }
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
+-    return out;
+-};
++        if (!style) {
++            this.style = null;
++            return this;
++        } else if (style instanceof Style) {
++            this.style = style;
++        } else {
++            this.style = new Style(style, this.animationLoop);
++        }
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scalar.rotateX = function (out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++        this.style
++            .on('load', this._onStyleLoad)
++            .on('error', this._forwardStyleEvent)
++            .on('change', this._onStyleChange)
++            .on('source.add', this._onSourceAdd)
++            .on('source.remove', this._onSourceRemove)
++            .on('source.load', this._onSourceUpdate)
++            .on('source.error', this._forwardSourceEvent)
++            .on('source.change', this._onSourceUpdate)
++            .on('layer.add', this._forwardLayerEvent)
++            .on('layer.remove', this._forwardLayerEvent)
++            .on('layer.error', this._forwardLayerEvent)
++            .on('tile.add', this._forwardTileEvent)
++            .on('tile.remove', this._forwardTileEvent)
++            .on('tile.load', this._update)
++            .on('tile.error', this._forwardTileEvent)
++            .on('tile.stats', this._forwardTileEvent);
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[0]  = a[0];
+-        out[1]  = a[1];
+-        out[2]  = a[2];
+-        out[3]  = a[3];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++        this.on('rotate', this.style._redoPlacement);
++        this.on('pitch', this.style._redoPlacement);
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[4] = a10 * c + a20 * s;
+-    out[5] = a11 * c + a21 * s;
+-    out[6] = a12 * c + a22 * s;
+-    out[7] = a13 * c + a23 * s;
+-    out[8] = a20 * c - a10 * s;
+-    out[9] = a21 * c - a11 * s;
+-    out[10] = a22 * c - a12 * s;
+-    out[11] = a23 * c - a13 * s;
+-    return out;
+-};
++        return this;
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.rotateX = function (out, a, rad) {
+-    var s = SIMD.Float32x4.splat(Math.sin(rad)),
+-        c = SIMD.Float32x4.splat(Math.cos(rad));
++    /**
++     * Get a style object that can be used to recreate the map's style.
++     *
++     * @returns {Object} style
++     */
++    getStyle: function() {
++        return this.style.serialize();
++    },
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-      out[0]  = a[0];
+-      out[1]  = a[1];
+-      out[2]  = a[2];
+-      out[3]  = a[3];
+-      out[12] = a[12];
+-      out[13] = a[13];
+-      out[14] = a[14];
+-      out[15] = a[15];
+-    }
++    /**
++     * Add a source to the map style.
++     *
++     * @param {string} id ID of the source. Must not be used by any existing source.
++     * @param {Object} source source specification, following the
++     * [Mapbox GL Style Reference](https://www.mapbox.com/mapbox-gl-style-spec/#sources)
++     * @fires source.add
++     * @returns {Map} `this`
++     */
++    addSource: function(id, source) {
++        this.style.addSource(id, source);
++        this._update(true);
++        return this;
++    },
+ 
+-    // Perform axis-specific matrix multiplication
+-    var a_1 = SIMD.Float32x4.load(a, 4);
+-    var a_2 = SIMD.Float32x4.load(a, 8);
+-    SIMD.Float32x4.store(out, 4,
+-                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_2, s)));
+-    SIMD.Float32x4.store(out, 8,
+-                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_2, c), SIMD.Float32x4.mul(a_1, s)));
+-    return out;
+-};
++    /**
++     * Remove an existing source from the map style.
++     *
++     * @param {string} id ID of the source to remove
++     * @fires source.remove
++     * @returns {Map} `this`
++     */
++    removeSource: function(id) {
++        this.style.removeSource(id);
++        this._update(true);
++        return this;
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the X axis using SIMD if availabe and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.rotateX = glMatrix.USE_SIMD ? mat4.SIMD.rotateX : mat4.scalar.rotateX;
++    /**
++     * Return the style source object with the given `id`.
++     *
++     * @param {string} id source ID
++     * @returns {Object}
++     */
++    getSource: function(id) {
++        return this.style.getSource(id);
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scalar.rotateY = function (out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a20 = a[8],
+-        a21 = a[9],
+-        a22 = a[10],
+-        a23 = a[11];
++    /**
++     * Add a layer to the map style. The layer will be inserted before the layer with
++     * ID `before`, or appended if `before` is omitted.
++     * @param {StyleLayer|Object} layer
++     * @param {string=} before  ID of an existing layer to insert before
++     * @fires layer.add
++     * @returns {Map} `this`
++     */
++    addLayer: function(layer, before) {
++        this.style.addLayer(layer, before);
++        this._update(true);
++        return this;
++    },
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[4]  = a[4];
+-        out[5]  = a[5];
+-        out[6]  = a[6];
+-        out[7]  = a[7];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++    /**
++     * Remove the layer with the given `id` from the map. Any layers which refer to the
++     * specified layer via a `ref` property are also removed.
++     *
++     * @param {string} id layer id
++     * @throws {Error} if no layer with the given `id` exists
++     * @fires layer.remove
++     * @returns {Map} `this`
++     */
++    removeLayer: function(id) {
++        this.style.removeLayer(id);
++        this._update(true);
++        return this;
++    },
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c - a20 * s;
+-    out[1] = a01 * c - a21 * s;
+-    out[2] = a02 * c - a22 * s;
+-    out[3] = a03 * c - a23 * s;
+-    out[8] = a00 * s + a20 * c;
+-    out[9] = a01 * s + a21 * c;
+-    out[10] = a02 * s + a22 * c;
+-    out[11] = a03 * s + a23 * c;
+-    return out;
+-};
++    /**
++     * Return the style layer object with the given `id`.
++     *
++     * @param {string} id layer id
++     * @returns {?Object} a layer, if one with the given `id` exists
++     */
++    getLayer: function(id) {
++        return this.style.getLayer(id);
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.rotateY = function (out, a, rad) {
+-    var s = SIMD.Float32x4.splat(Math.sin(rad)),
+-        c = SIMD.Float32x4.splat(Math.cos(rad));
++    /**
++     * Set the filter for a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {Array} filter filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#types-filter)
++     * @returns {Map} `this`
++     * @example
++     * map.setFilter('my-layer', ['==', 'name', 'USA']);
++     */
++    setFilter: function(layer, filter) {
++        this.style.setFilter(layer, filter);
++        this._update(true);
++        return this;
++    },
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+-        out[4]  = a[4];
+-        out[5]  = a[5];
+-        out[6]  = a[6];
+-        out[7]  = a[7];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++    /**
++     * Set the zoom extent for a given style layer.
++     *
++     * @param {string} layerId ID of a layer
++     * @param {number} minzoom minimum zoom extent
++     * @param {number} maxzoom maximum zoom extent
++     * @returns {Map} `this`
++     * @example
++     * map.setLayerZoomRange('my-layer', 2, 5);
++     */
++    setLayerZoomRange: function(layerId, minzoom, maxzoom) {
++        this.style.setLayerZoomRange(layerId, minzoom, maxzoom);
++        this._update(true);
++        return this;
++    },
+ 
+-    // Perform axis-specific matrix multiplication
+-    var a_0 = SIMD.Float32x4.load(a, 0);
+-    var a_2 = SIMD.Float32x4.load(a, 8);
+-    SIMD.Float32x4.store(out, 0,
+-                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_2, s)));
+-    SIMD.Float32x4.store(out, 8,
+-                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, s), SIMD.Float32x4.mul(a_2, c)));
+-    return out;
+-};
++    /**
++     * Get the filter for a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @returns {Array} filter specification, as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#filter)
++     */
++    getFilter: function(layer) {
++        return this.style.getFilter(layer);
++    },
++
++    /**
++     * Set the value of a paint property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a paint property
++     * @param {*} value value for the paint propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
++     * @param {string=} klass optional class specifier for the property
++     * @returns {Map} `this`
++     * @example
++     * map.setPaintProperty('my-layer', 'fill-color', '#faafee');
++     */
++    setPaintProperty: function(layer, name, value, klass) {
++        this.style.setPaintProperty(layer, name, value, klass);
++        this._update(true);
++        return this;
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Y axis if SIMD available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+- mat4.rotateY = glMatrix.USE_SIMD ? mat4.SIMD.rotateY : mat4.scalar.rotateY;
++    /**
++     * Get the value of a paint property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a paint property
++     * @param {string=} klass optional class specifier for the property
++     * @returns {*} value for the paint propery
++     */
++    getPaintProperty: function(layer, name, klass) {
++        return this.style.getPaintProperty(layer, name, klass);
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis not using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.scalar.rotateZ = function (out, a, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad),
+-        a00 = a[0],
+-        a01 = a[1],
+-        a02 = a[2],
+-        a03 = a[3],
+-        a10 = a[4],
+-        a11 = a[5],
+-        a12 = a[6],
+-        a13 = a[7];
++    /**
++     * Set the value of a layout property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a layout property
++     * @param {*} value value for the layout propery; must have the type appropriate for the property as defined in the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/)
++     * @returns {Map} `this`
++     * @example
++     * map.setLayoutProperty('my-layer', 'visibility', 'none');
++     */
++    setLayoutProperty: function(layer, name, value) {
++        this.style.setLayoutProperty(layer, name, value);
++        this._update(true);
++        return this;
++    },
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[8]  = a[8];
+-        out[9]  = a[9];
+-        out[10] = a[10];
+-        out[11] = a[11];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++    /**
++     * Get the value of a layout property in a given style layer.
++     *
++     * @param {string} layer ID of a layer
++     * @param {string} name name of a layout property
++     * @param {string=} klass optional class specifier for the property
++     * @returns {*} value for the layout propery
++     */
++    getLayoutProperty: function(layer, name) {
++        return this.style.getLayoutProperty(layer, name);
++    },
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0] = a00 * c + a10 * s;
+-    out[1] = a01 * c + a11 * s;
+-    out[2] = a02 * c + a12 * s;
+-    out[3] = a03 * c + a13 * s;
+-    out[4] = a10 * c - a00 * s;
+-    out[5] = a11 * c - a01 * s;
+-    out[6] = a12 * c - a02 * s;
+-    out[7] = a13 * c - a03 * s;
+-    return out;
+-};
++    /**
++     * Get the Map's container as an HTML element
++     * @returns {HTMLElement} container
++     */
++    getContainer: function() {
++        return this._container;
++    },
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis using SIMD
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.SIMD.rotateZ = function (out, a, rad) {
+-    var s = SIMD.Float32x4.splat(Math.sin(rad)),
+-        c = SIMD.Float32x4.splat(Math.cos(rad));
++    /**
++     * Get the container for the map `canvas` element.
++     *
++     * If you want to add non-GL overlays to the map, you should append them to this element. This
++     * is the element to which event bindings for map interactivity such as panning and zooming are
++     * attached. It will receive bubbled events for child elements such as the `canvas`, but not for
++     * map controls.
++     *
++     * @returns {HTMLElement} container
++     */
++    getCanvasContainer: function() {
++        return this._canvasContainer;
++    },
+ 
+-    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+-        out[8]  = a[8];
+-        out[9]  = a[9];
+-        out[10] = a[10];
+-        out[11] = a[11];
+-        out[12] = a[12];
+-        out[13] = a[13];
+-        out[14] = a[14];
+-        out[15] = a[15];
+-    }
++    /**
++     * Get the Map's canvas as an HTML canvas
++     * @returns {HTMLElement} canvas
++     */
++    getCanvas: function() {
++        return this._canvas.getElement();
++    },
+ 
+-    // Perform axis-specific matrix multiplication
+-    var a_0 = SIMD.Float32x4.load(a, 0);
+-    var a_1 = SIMD.Float32x4.load(a, 4);
+-    SIMD.Float32x4.store(out, 0,
+-                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_1, s)));
+-    SIMD.Float32x4.store(out, 4,
+-                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_0, s)));
+-    return out;
+-};
++    _setupContainer: function() {
++        var container = this._container;
++        container.classList.add('mapboxgl-map');
+ 
+-/**
+- * Rotates a matrix by the given angle around the Z axis if SIMD available and enabled
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to rotate
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+- mat4.rotateZ = glMatrix.USE_SIMD ? mat4.SIMD.rotateZ : mat4.scalar.rotateZ;
++        var canvasContainer = this._canvasContainer = DOM.create('div', 'mapboxgl-canvas-container', container);
++        if (this._interactive) {
++            canvasContainer.classList.add('mapboxgl-interactive');
++        }
++        this._canvas = new Canvas(this, canvasContainer);
+ 
+-/**
+- * Creates a matrix from a vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, dest, vec);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {vec3} v Translation vector
+- * @returns {mat4} out
+- */
+-mat4.fromTranslation = function(out, v) {
+-    out[0] = 1;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
+-    return out;
+-}
++        var controlContainer = this._controlContainer = DOM.create('div', 'mapboxgl-control-container', container);
++        var corners = this._controlCorners = {};
++        ['top-left', 'top-right', 'bottom-left', 'bottom-right'].forEach(function (pos) {
++            corners[pos] = DOM.create('div', 'mapboxgl-ctrl-' + pos, controlContainer);
++        });
++    },
+ 
+-/**
+- * Creates a matrix from a vector scaling
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.scale(dest, dest, vec);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {vec3} v Scaling vector
+- * @returns {mat4} out
+- */
+-mat4.fromScaling = function(out, v) {
+-    out[0] = v[0];
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = v[1];
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = v[2];
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++    _setupPainter: function() {
++        var gl = this._canvas.getWebGLContext({
++            failIfMajorPerformanceCaveat: this._failIfMajorPerformanceCaveat,
++            preserveDrawingBuffer: this._preserveDrawingBuffer
++        });
+ 
+-/**
+- * Creates a matrix from a given angle around a given axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotate(dest, dest, rad, axis);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @param {vec3} axis the axis to rotate around
+- * @returns {mat4} out
+- */
+-mat4.fromRotation = function(out, rad, axis) {
+-    var x = axis[0], y = axis[1], z = axis[2],
+-        len = Math.sqrt(x * x + y * y + z * z),
+-        s, c, t;
++        if (!gl) {
++            console.error('Failed to initialize WebGL');
++            return;
++        }
+ 
+-    if (Math.abs(len) < glMatrix.EPSILON) { return null; }
++        this.painter = new Painter(gl, this.transform);
++    },
+ 
+-    len = 1 / len;
+-    x *= len;
+-    y *= len;
+-    z *= len;
++    /**
++     * WebGL Context Lost event.
++     *
++     * @event webglcontextlost
++     * @memberof Map
++     * @instance
++     * @type {Object}
++     * @property {Event} originalEvent the original DOM event
++     */
++    _contextLost: function(event) {
++        event.preventDefault();
++        if (this._frameId) {
++            browser.cancelFrame(this._frameId);
++        }
++        this.fire("webglcontextlost", {originalEvent: event});
++    },
+ 
+-    s = Math.sin(rad);
+-    c = Math.cos(rad);
+-    t = 1 - c;
++    /**
++     * WebGL Context Restored event.
++     *
++     * @event webglcontextrestored
++     * @memberof Map
++     * @instance
++     * @type {Object}
++     */
++    _contextRestored: function(event) {
++        this._setupPainter();
++        this.resize();
++        this._update();
++        this.fire("webglcontextrestored", {originalEvent: event});
++    },
+ 
+-    // Perform rotation-specific matrix multiplication
+-    out[0] = x * x * t + c;
+-    out[1] = y * x * t + z * s;
+-    out[2] = z * x * t - y * s;
+-    out[3] = 0;
+-    out[4] = x * y * t - z * s;
+-    out[5] = y * y * t + c;
+-    out[6] = z * y * t + x * s;
+-    out[7] = 0;
+-    out[8] = x * z * t + y * s;
+-    out[9] = y * z * t - x * s;
+-    out[10] = z * z * t + c;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++    /**
++     * Is this map fully loaded? If the style isn't loaded
++     * or it has a change to the sources or style that isn't
++     * propagated to its style, return false.
++     *
++     * @returns {boolean} whether the map is loaded
++     */
++    loaded: function() {
++        if (this._styleDirty || this._sourcesDirty)
++            return false;
++        if (!this.style || !this.style.loaded())
++            return false;
++        return true;
++    },
+ 
+-/**
+- * Creates a matrix from the given angle around the X axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotateX(dest, dest, rad);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.fromXRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
++    /**
++     * Update this map's style and sources, and re-render the map.
++     *
++     * @param {boolean} updateStyle mark the map's style for reprocessing as
++     * well as its sources
++     * @returns {Map} this
++     * @private
++     */
++    _update: function(updateStyle) {
++        if (!this.style) return this;
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0]  = 1;
+-    out[1]  = 0;
+-    out[2]  = 0;
+-    out[3]  = 0;
+-    out[4] = 0;
+-    out[5] = c;
+-    out[6] = s;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = -s;
+-    out[10] = c;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++        this._styleDirty = this._styleDirty || updateStyle;
++        this._sourcesDirty = true;
+ 
+-/**
+- * Creates a matrix from the given angle around the Y axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotateY(dest, dest, rad);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.fromYRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
++        this._rerender();
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0]  = c;
+-    out[1]  = 0;
+-    out[2]  = -s;
+-    out[3]  = 0;
+-    out[4] = 0;
+-    out[5] = 1;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = s;
+-    out[9] = 0;
+-    out[10] = c;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++        return this;
++    },
+ 
+-/**
+- * Creates a matrix from the given angle around the Z axis
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.rotateZ(dest, dest, rad);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {Number} rad the angle to rotate the matrix by
+- * @returns {mat4} out
+- */
+-mat4.fromZRotation = function(out, rad) {
+-    var s = Math.sin(rad),
+-        c = Math.cos(rad);
++    /**
++     * Call when a (re-)render of the map is required, e.g. when the
++     * user panned or zoomed,f or new data is available.
++     * @returns {Map} this
++     * @private
++     */
++    _render: function() {
++        if (this.style && this._styleDirty) {
++            this._styleDirty = false;
++            this.style.update(this._classes, this._classOptions);
++            this._classOptions = null;
++            this.style._recalculate(this.transform.zoom);
++        }
+ 
+-    // Perform axis-specific matrix multiplication
+-    out[0]  = c;
+-    out[1]  = s;
+-    out[2]  = 0;
+-    out[3]  = 0;
+-    out[4] = -s;
+-    out[5] = c;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 1;
+-    out[11] = 0;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
+-    return out;
+-}
++        if (this.style && this._sourcesDirty) {
++            this._sourcesDirty = false;
++            this.style._updateSources(this.transform);
++        }
+ 
+-/**
+- * Creates a matrix from a quaternion rotation and vector translation
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @returns {mat4} out
+- */
+-mat4.fromRotationTranslation = function (out, q, v) {
+-    // Quaternion math
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++        this.painter.render(this.style, {
++            debug: this.showTileBoundaries,
++            showOverdrawInspector: this._showOverdrawInspector,
++            vertices: this.vertices,
++            rotating: this.rotating,
++            zooming: this.zooming
++        });
+ 
+-        xx = x * x2,
+-        xy = x * y2,
+-        xz = x * z2,
+-        yy = y * y2,
+-        yz = y * z2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++        this.fire('render');
+ 
+-    out[0] = 1 - (yy + zz);
+-    out[1] = xy + wz;
+-    out[2] = xz - wy;
+-    out[3] = 0;
+-    out[4] = xy - wz;
+-    out[5] = 1 - (xx + zz);
+-    out[6] = yz + wx;
+-    out[7] = 0;
+-    out[8] = xz + wy;
+-    out[9] = yz - wx;
+-    out[10] = 1 - (xx + yy);
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
++        if (this.loaded() && !this._loaded) {
++            this._loaded = true;
++            this.fire('load');
++        }
+ 
+-    return out;
+-};
++        this._frameId = null;
+ 
+-/**
+- * Returns the translation vector component of a transformation
+- *  matrix. If a matrix is built with fromRotationTranslation,
+- *  the returned vector will be the same as the translation vector
+- *  originally supplied.
+- * @param  {vec3} out Vector to receive translation component
+- * @param  {mat4} mat Matrix to be decomposed (input)
+- * @return {vec3} out
+- */
+-mat4.getTranslation = function (out, mat) {
+-  out[0] = mat[12];
+-  out[1] = mat[13];
+-  out[2] = mat[14];
++        if (!this.animationLoop.stopped()) {
++            this._styleDirty = true;
++        }
+ 
+-  return out;
+-};
++        if (this._sourcesDirty || this._repaint || !this.animationLoop.stopped()) {
++            this._rerender();
++        }
+ 
+-/**
+- * Returns a quaternion representing the rotational component
+- *  of a transformation matrix. If a matrix is built with
+- *  fromRotationTranslation, the returned quaternion will be the
+- *  same as the quaternion originally supplied.
+- * @param {quat} out Quaternion to receive the rotation component
+- * @param {mat4} mat Matrix to be decomposed (input)
+- * @return {quat} out
+- */
+-mat4.getRotation = function (out, mat) {
+-  // Algorithm taken from http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
+-  var trace = mat[0] + mat[5] + mat[10];
+-  var S = 0;
++        return this;
++    },
+ 
+-  if (trace > 0) { 
+-    S = Math.sqrt(trace + 1.0) * 2;
+-    out[3] = 0.25 * S;
+-    out[0] = (mat[6] - mat[9]) / S;
+-    out[1] = (mat[8] - mat[2]) / S; 
+-    out[2] = (mat[1] - mat[4]) / S; 
+-  } else if ((mat[0] > mat[5])&(mat[0] > mat[10])) { 
+-    S = Math.sqrt(1.0 + mat[0] - mat[5] - mat[10]) * 2;
+-    out[3] = (mat[6] - mat[9]) / S;
+-    out[0] = 0.25 * S;
+-    out[1] = (mat[1] + mat[4]) / S; 
+-    out[2] = (mat[8] + mat[2]) / S; 
+-  } else if (mat[5] > mat[10]) { 
+-    S = Math.sqrt(1.0 + mat[5] - mat[0] - mat[10]) * 2;
+-    out[3] = (mat[8] - mat[2]) / S;
+-    out[0] = (mat[1] + mat[4]) / S; 
+-    out[1] = 0.25 * S;
+-    out[2] = (mat[6] + mat[9]) / S; 
+-  } else { 
+-    S = Math.sqrt(1.0 + mat[10] - mat[0] - mat[5]) * 2;
+-    out[3] = (mat[1] - mat[4]) / S;
+-    out[0] = (mat[8] + mat[2]) / S;
+-    out[1] = (mat[6] + mat[9]) / S;
+-    out[2] = 0.25 * S;
+-  }
++    /**
++     * Destroys the map's underlying resources, including web workers and DOM elements. Afterwards,
++     * you must not call any further methods on this Map instance.
++     *
++     * @returns {undefined}
++     */
++    remove: function() {
++        if (this._hash) this._hash.remove();
++        browser.cancelFrame(this._frameId);
++        this.setStyle(null);
++        if (typeof window !== 'undefined') {
++            window.removeEventListener('resize', this._onWindowResize, false);
++        }
++        removeNode(this._canvasContainer);
++        removeNode(this._controlContainer);
++        this._container.classList.remove('mapboxgl-map');
++    },
+ 
+-  return out;
+-};
++    /**
++     * A default error handler for `style.error`, `source.error`, `layer.error`,
++     * and `tile.error` events.
++     * It logs the error via `console.error`.
++     *
++     * @example
++     * // Disable the default error handler
++     * map.off('style.error', map.onError);
++     * map.off('source.error', map.onError);
++     * map.off('tile.error', map.onError);
++     * map.off('layer.error', map.onError);
++     */
++    onError: function(e) {
++        console.error(e.error);
++    },
+ 
+-/**
+- * Creates a matrix from a quaternion rotation, vector translation and vector scale
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *     mat4.scale(dest, scale)
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @param {vec3} s Scaling vector
+- * @returns {mat4} out
+- */
+-mat4.fromRotationTranslationScale = function (out, q, v, s) {
+-    // Quaternion math
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++    _rerender: function() {
++        if (this.style && !this._frameId) {
++            this._frameId = browser.frame(this._render);
++        }
++    },
+ 
+-        xx = x * x2,
+-        xy = x * y2,
+-        xz = x * z2,
+-        yy = y * y2,
+-        yz = y * z2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2,
+-        sx = s[0],
+-        sy = s[1],
+-        sz = s[2];
++    _forwardStyleEvent: function(e) {
++        this.fire('style.' + e.type, util.extend({style: e.target}, e));
++    },
+ 
+-    out[0] = (1 - (yy + zz)) * sx;
+-    out[1] = (xy + wz) * sx;
+-    out[2] = (xz - wy) * sx;
+-    out[3] = 0;
+-    out[4] = (xy - wz) * sy;
+-    out[5] = (1 - (xx + zz)) * sy;
+-    out[6] = (yz + wx) * sy;
+-    out[7] = 0;
+-    out[8] = (xz + wy) * sz;
+-    out[9] = (yz - wx) * sz;
+-    out[10] = (1 - (xx + yy)) * sz;
+-    out[11] = 0;
+-    out[12] = v[0];
+-    out[13] = v[1];
+-    out[14] = v[2];
+-    out[15] = 1;
++    _forwardSourceEvent: function(e) {
++        this.fire(e.type, util.extend({style: e.target}, e));
++    },
+ 
+-    return out;
+-};
++    _forwardLayerEvent: function(e) {
++        this.fire(e.type, util.extend({style: e.target}, e));
++    },
+ 
+-/**
+- * Creates a matrix from a quaternion rotation, vector translation and vector scale, rotating and scaling around the given origin
+- * This is equivalent to (but much faster than):
+- *
+- *     mat4.identity(dest);
+- *     mat4.translate(dest, vec);
+- *     mat4.translate(dest, origin);
+- *     var quatMat = mat4.create();
+- *     quat4.toMat4(quat, quatMat);
+- *     mat4.multiply(dest, quatMat);
+- *     mat4.scale(dest, scale)
+- *     mat4.translate(dest, negativeOrigin);
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat4} q Rotation quaternion
+- * @param {vec3} v Translation vector
+- * @param {vec3} s Scaling vector
+- * @param {vec3} o The origin vector around which to scale and rotate
+- * @returns {mat4} out
+- */
+-mat4.fromRotationTranslationScaleOrigin = function (out, q, v, s, o) {
+-  // Quaternion math
+-  var x = q[0], y = q[1], z = q[2], w = q[3],
+-      x2 = x + x,
+-      y2 = y + y,
+-      z2 = z + z,
++    _forwardTileEvent: function(e) {
++        this.fire(e.type, util.extend({style: e.target}, e));
++    },
+ 
+-      xx = x * x2,
+-      xy = x * y2,
+-      xz = x * z2,
+-      yy = y * y2,
+-      yz = y * z2,
+-      zz = z * z2,
+-      wx = w * x2,
+-      wy = w * y2,
+-      wz = w * z2,
++    _onStyleLoad: function(e) {
++        if (this.transform.unmodified) {
++            this.jumpTo(this.style.stylesheet);
++        }
++        this.style.update(this._classes, {transition: false});
++        this._forwardStyleEvent(e);
++    },
+ 
+-      sx = s[0],
+-      sy = s[1],
+-      sz = s[2],
++    _onStyleChange: function(e) {
++        this._update(true);
++        this._forwardStyleEvent(e);
++    },
+ 
+-      ox = o[0],
+-      oy = o[1],
+-      oz = o[2];
++    _onSourceAdd: function(e) {
++        var source = e.source;
++        if (source.onAdd)
++            source.onAdd(this);
++        this._forwardSourceEvent(e);
++    },
+ 
+-  out[0] = (1 - (yy + zz)) * sx;
+-  out[1] = (xy + wz) * sx;
+-  out[2] = (xz - wy) * sx;
+-  out[3] = 0;
+-  out[4] = (xy - wz) * sy;
+-  out[5] = (1 - (xx + zz)) * sy;
+-  out[6] = (yz + wx) * sy;
+-  out[7] = 0;
+-  out[8] = (xz + wy) * sz;
+-  out[9] = (yz - wx) * sz;
+-  out[10] = (1 - (xx + yy)) * sz;
+-  out[11] = 0;
+-  out[12] = v[0] + ox - (out[0] * ox + out[4] * oy + out[8] * oz);
+-  out[13] = v[1] + oy - (out[1] * ox + out[5] * oy + out[9] * oz);
+-  out[14] = v[2] + oz - (out[2] * ox + out[6] * oy + out[10] * oz);
+-  out[15] = 1;
++    _onSourceRemove: function(e) {
++        var source = e.source;
++        if (source.onRemove)
++            source.onRemove(this);
++        this._forwardSourceEvent(e);
++    },
+ 
+-  return out;
+-};
++    _onSourceUpdate: function(e) {
++        this._update();
++        this._forwardSourceEvent(e);
++    },
+ 
+-/**
+- * Calculates a 4x4 matrix from the given quaternion
+- *
+- * @param {mat4} out mat4 receiving operation result
+- * @param {quat} q Quaternion to create matrix from
+- *
+- * @returns {mat4} out
+- */
+-mat4.fromQuat = function (out, q) {
+-    var x = q[0], y = q[1], z = q[2], w = q[3],
+-        x2 = x + x,
+-        y2 = y + y,
+-        z2 = z + z,
++    _onWindowResize: function() {
++        this.stop().resize()._update();
++    }
++});
+ 
+-        xx = x * x2,
+-        yx = y * x2,
+-        yy = y * y2,
+-        zx = z * x2,
+-        zy = z * y2,
+-        zz = z * z2,
+-        wx = w * x2,
+-        wy = w * y2,
+-        wz = w * z2;
++util.extendAll(Map.prototype, /** @lends Map.prototype */{
+ 
+-    out[0] = 1 - yy - zz;
+-    out[1] = yx + wz;
+-    out[2] = zx - wy;
+-    out[3] = 0;
++    /**
++     * Draw an outline around each rendered tile for debugging.
++     *
++     * @name showTileBoundaries
++     * @type {boolean}
++     */
++    _showTileBoundaries: false,
++    get showTileBoundaries() { return this._showTileBoundaries; },
++    set showTileBoundaries(value) {
++        if (this._showTileBoundaries === value) return;
++        this._showTileBoundaries = value;
++        this._update();
++    },
+ 
+-    out[4] = yx - wz;
+-    out[5] = 1 - xx - zz;
+-    out[6] = zy + wx;
+-    out[7] = 0;
++    /**
++     * Draw boxes around all symbols in the data source, showing which were
++     * rendered and which were hidden due to collisions with other symbols for
++     * style debugging.
++     *
++     * @name showCollisionBoxes
++     * @type {boolean}
++     */
++    _showCollisionBoxes: false,
++    get showCollisionBoxes() { return this._showCollisionBoxes; },
++    set showCollisionBoxes(value) {
++        if (this._showCollisionBoxes === value) return;
++        this._showCollisionBoxes = value;
++        this.style._redoPlacement();
++    },
+ 
+-    out[8] = zx + wy;
+-    out[9] = zy - wx;
+-    out[10] = 1 - xx - yy;
+-    out[11] = 0;
++    /*
++     * Show how many times each fragment has been shaded. White fragments have
++     * been shaded 8 or more times. Black fragments have been shaded 0 times.
++     *
++     * @name showOverdraw
++     * @type {boolean}
++     */
++    _showOverdrawInspector: false,
++    get showOverdrawInspector() { return this._showOverdrawInspector; },
++    set showOverdrawInspector(value) {
++        if (this._showOverdrawInspector === value) return;
++        this._showOverdrawInspector = value;
++        this._update();
++    },
+ 
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = 0;
+-    out[15] = 1;
++    /**
++     * Enable continuous repaint to analyze performance.
++     *
++     * @name repaint
++     * @type {boolean}
++     */
++    _repaint: false,
++    get repaint() { return this._repaint; },
++    set repaint(value) { this._repaint = value; this._update(); },
+ 
+-    return out;
+-};
++    // show vertices
++    _vertices: false,
++    get vertices() { return this._vertices; },
++    set vertices(value) { this._vertices = value; this._update(); }
++});
+ 
+-/**
+- * Generates a frustum matrix with the given bounds
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {Number} left Left bound of the frustum
+- * @param {Number} right Right bound of the frustum
+- * @param {Number} bottom Bottom bound of the frustum
+- * @param {Number} top Top bound of the frustum
+- * @param {Number} near Near bound of the frustum
+- * @param {Number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-mat4.frustum = function (out, left, right, bottom, top, near, far) {
+-    var rl = 1 / (right - left),
+-        tb = 1 / (top - bottom),
+-        nf = 1 / (near - far);
+-    out[0] = (near * 2) * rl;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = (near * 2) * tb;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = (right + left) * rl;
+-    out[9] = (top + bottom) * tb;
+-    out[10] = (far + near) * nf;
+-    out[11] = -1;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = (far * near * 2) * nf;
+-    out[15] = 0;
+-    return out;
+-};
++function removeNode(node) {
++    if (node.parentNode) {
++        node.parentNode.removeChild(node);
++    }
++}
+ 
+ /**
+- * Generates a perspective projection matrix with the given bounds
++ * Options common to Map#addClass, Map#removeClass, and Map#setClasses, controlling
++ * whether or not to smoothly transition property changes triggered by the class change.
+  *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {number} fovy Vertical field of view in radians
+- * @param {number} aspect Aspect ratio. typically viewport width/height
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
++ * @typedef {Object} StyleOptions
++ * @property {boolean} transition
+  */
+-mat4.perspective = function (out, fovy, aspect, near, far) {
+-    var f = 1.0 / Math.tan(fovy / 2),
+-        nf = 1 / (near - far);
+-    out[0] = f / aspect;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = f;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = (far + near) * nf;
+-    out[11] = -1;
+-    out[12] = 0;
+-    out[13] = 0;
+-    out[14] = (2 * far * near) * nf;
+-    out[15] = 0;
+-    return out;
+-};
+ 
+-/**
+- * Generates a perspective projection matrix with the given field of view.
+- * This is primarily useful for generating projection matrices to be used
+- * with the still experiemental WebVR API.
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {Object} fov Object containing the following values: upDegrees, downDegrees, leftDegrees, rightDegrees
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-mat4.perspectiveFromFieldOfView = function (out, fov, near, far) {
+-    var upTan = Math.tan(fov.upDegrees * Math.PI/180.0),
+-        downTan = Math.tan(fov.downDegrees * Math.PI/180.0),
+-        leftTan = Math.tan(fov.leftDegrees * Math.PI/180.0),
+-        rightTan = Math.tan(fov.rightDegrees * Math.PI/180.0),
+-        xScale = 2.0 / (leftTan + rightTan),
+-        yScale = 2.0 / (upTan + downTan);
++ /**
++  * This event is fired whenever the map is drawn to the screen because of
++  *
++  *  - a change in map position, zoom, pitch, or bearing
++  *  - a change to the map style
++  *  - a change to a GeoJSON source
++  *  - a vector tile, GeoJSON file, glyph, or sprite being loaded
++  *
++  * @event render
++  * @memberof Map
++  * @instance
++  */
+ 
+-    out[0] = xScale;
+-    out[1] = 0.0;
+-    out[2] = 0.0;
+-    out[3] = 0.0;
+-    out[4] = 0.0;
+-    out[5] = yScale;
+-    out[6] = 0.0;
+-    out[7] = 0.0;
+-    out[8] = -((leftTan - rightTan) * xScale * 0.5);
+-    out[9] = ((upTan - downTan) * yScale * 0.5);
+-    out[10] = far / (near - far);
+-    out[11] = -1.0;
+-    out[12] = 0.0;
+-    out[13] = 0.0;
+-    out[14] = (far * near) / (near - far);
+-    out[15] = 0.0;
+-    return out;
+-}
++},{"../geo/lng_lat":269,"../geo/lng_lat_bounds":270,"../geo/transform":271,"../render/painter":284,"../style/animation_loop":300,"../style/style":303,"../util/browser":348,"../util/canvas":349,"../util/dom":351,"../util/evented":354,"../util/util":362,"./camera":330,"./control/attribution":331,"./hash":342,"./interaction":343,"point-geometry":400}],345:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Generates a orthogonal projection matrix with the given bounds
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {number} left Left bound of the frustum
+- * @param {number} right Right bound of the frustum
+- * @param {number} bottom Bottom bound of the frustum
+- * @param {number} top Top bound of the frustum
+- * @param {number} near Near bound of the frustum
+- * @param {number} far Far bound of the frustum
+- * @returns {mat4} out
+- */
+-mat4.ortho = function (out, left, right, bottom, top, near, far) {
+-    var lr = 1 / (left - right),
+-        bt = 1 / (bottom - top),
+-        nf = 1 / (near - far);
+-    out[0] = -2 * lr;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    out[4] = 0;
+-    out[5] = -2 * bt;
+-    out[6] = 0;
+-    out[7] = 0;
+-    out[8] = 0;
+-    out[9] = 0;
+-    out[10] = 2 * nf;
+-    out[11] = 0;
+-    out[12] = (left + right) * lr;
+-    out[13] = (top + bottom) * bt;
+-    out[14] = (far + near) * nf;
+-    out[15] = 1;
+-    return out;
+-};
++module.exports = Popup;
++
++var util = require('../util/util');
++var Evented = require('../util/evented');
++var DOM = require('../util/dom');
++var LngLat = require('../geo/lng_lat');
+ 
+ /**
+- * Generates a look-at matrix with the given eye position, focal point, and up axis
+- *
+- * @param {mat4} out mat4 frustum matrix will be written into
+- * @param {vec3} eye Position of the viewer
+- * @param {vec3} center Point the viewer is looking at
+- * @param {vec3} up vec3 pointing up
+- * @returns {mat4} out
++ * Creates a popup component
++ * @class Popup
++ * @param {Object} options
++ * @param {boolean} options.closeButton whether to show a close button in the
++ * top right corner of the popup.
++ * @param {boolean} options.closeOnClick whether to close the popup when the
++ * map is clicked.
++ * @param {string} options.anchor - One of "top", "bottom", "left", "right", "top-left",
++ * "top-right", "bottom-left", or "bottom-right", describing where the popup's anchor
++ * relative to the coordinate set via `setLngLat`.
++ * @example
++ * var tooltip = new mapboxgl.Popup()
++ *   .setLngLat(e.lngLat)
++ *   .setHTML("<h1>Hello World!</h1>")
++ *   .addTo(map);
+  */
+-mat4.lookAt = function (out, eye, center, up) {
+-    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
+-        eyex = eye[0],
+-        eyey = eye[1],
+-        eyez = eye[2],
+-        upx = up[0],
+-        upy = up[1],
+-        upz = up[2],
+-        centerx = center[0],
+-        centery = center[1],
+-        centerz = center[2];
++function Popup(options) {
++    util.setOptions(this, options);
++    util.bindAll([
++        '_update',
++        '_onClickClose'],
++        this);
++}
+ 
+-    if (Math.abs(eyex - centerx) < glMatrix.EPSILON &&
+-        Math.abs(eyey - centery) < glMatrix.EPSILON &&
+-        Math.abs(eyez - centerz) < glMatrix.EPSILON) {
+-        return mat4.identity(out);
+-    }
++Popup.prototype = util.inherit(Evented, /** @lends Popup.prototype */{
++    options: {
++        closeButton: true,
++        closeOnClick: true
++    },
+ 
+-    z0 = eyex - centerx;
+-    z1 = eyey - centery;
+-    z2 = eyez - centerz;
++    /**
++     * Attaches the popup to a map
++     * @param {Map} map
++     * @returns {Popup} `this`
++     */
++    addTo: function(map) {
++        this._map = map;
++        this._map.on('move', this._update);
++        if (this.options.closeOnClick) {
++            this._map.on('click', this._onClickClose);
++        }
++        this._update();
++        return this;
++    },
+ 
+-    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
+-    z0 *= len;
+-    z1 *= len;
+-    z2 *= len;
++    /**
++     * Removes the popup from a map
++     * @example
++     * var popup = new mapboxgl.Popup().addTo(map);
++     * popup.remove();
++     * @returns {Popup} `this`
++     */
++    remove: function() {
++        if (this._content && this._content.parentNode) {
++            this._content.parentNode.removeChild(this._content);
++        }
+ 
+-    x0 = upy * z2 - upz * z1;
+-    x1 = upz * z0 - upx * z2;
+-    x2 = upx * z1 - upy * z0;
+-    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
+-    if (!len) {
+-        x0 = 0;
+-        x1 = 0;
+-        x2 = 0;
+-    } else {
+-        len = 1 / len;
+-        x0 *= len;
+-        x1 *= len;
+-        x2 *= len;
+-    }
++        if (this._container) {
++            this._container.parentNode.removeChild(this._container);
++            delete this._container;
++        }
+ 
+-    y0 = z1 * x2 - z2 * x1;
+-    y1 = z2 * x0 - z0 * x2;
+-    y2 = z0 * x1 - z1 * x0;
++        if (this._map) {
++            this._map.off('move', this._update);
++            this._map.off('click', this._onClickClose);
++            delete this._map;
++        }
+ 
+-    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
+-    if (!len) {
+-        y0 = 0;
+-        y1 = 0;
+-        y2 = 0;
+-    } else {
+-        len = 1 / len;
+-        y0 *= len;
+-        y1 *= len;
+-        y2 *= len;
+-    }
++        return this;
++    },
+ 
+-    out[0] = x0;
+-    out[1] = y0;
+-    out[2] = z0;
+-    out[3] = 0;
+-    out[4] = x1;
+-    out[5] = y1;
+-    out[6] = z1;
+-    out[7] = 0;
+-    out[8] = x2;
+-    out[9] = y2;
+-    out[10] = z2;
+-    out[11] = 0;
+-    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
+-    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
+-    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
+-    out[15] = 1;
++    /**
++     * Get the popup's geographical location
++     * @returns {LngLat}
++     */
++    getLngLat: function() {
++        return this._lngLat;
++    },
+ 
+-    return out;
+-};
++    /**
++     * Set the popup's geographical position and move it.
++     * @param {LngLat} lnglat
++     * @returns {Popup} `this`
++     */
++    setLngLat: function(lnglat) {
++        this._lngLat = LngLat.convert(lnglat);
++        this._update();
++        return this;
++    },
+ 
+-/**
+- * Returns a string representation of a mat4
+- *
+- * @param {mat4} mat matrix to represent as a string
+- * @returns {String} string representation of the matrix
+- */
+-mat4.str = function (a) {
+-    return 'mat4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ', ' +
+-                    a[4] + ', ' + a[5] + ', ' + a[6] + ', ' + a[7] + ', ' +
+-                    a[8] + ', ' + a[9] + ', ' + a[10] + ', ' + a[11] + ', ' +
+-                    a[12] + ', ' + a[13] + ', ' + a[14] + ', ' + a[15] + ')';
+-};
++    /**
++     * Fill a popup element with text only content. This creates a text node
++     * in the DOM, so it cannot end up appending raw HTML. Use this method
++     * if you want an added level of security against XSS if the popup
++     * content is user-provided.
++     * @param {string} text
++     * @returns {Popup} `this`
++     * @example
++     * var tooltip = new mapboxgl.Popup()
++     *   .setLngLat(e.lngLat)
++     *   .setText('Hello, world!')
++     *   .addTo(map);
++     */
++    setText: function(text) {
++        return this.setDOMContent(document.createTextNode(text));
++    },
+ 
+-/**
+- * Returns Frobenius norm of a mat4
+- *
+- * @param {mat4} a the matrix to calculate Frobenius norm of
+- * @returns {Number} Frobenius norm
+- */
+-mat4.frob = function (a) {
+-    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2) + Math.pow(a[9], 2) + Math.pow(a[10], 2) + Math.pow(a[11], 2) + Math.pow(a[12], 2) + Math.pow(a[13], 2) + Math.pow(a[14], 2) + Math.pow(a[15], 2) ))
+-};
++    /**
++     * Fill a popup element with HTML content, provided as a string.
++     * @param {string} html
++     * @returns {Popup} `this`
++     */
++    setHTML: function(html) {
++        var frag = document.createDocumentFragment();
++        var temp = document.createElement('body'), child;
++        temp.innerHTML = html;
++        while (true) {
++            child = temp.firstChild;
++            if (!child) break;
++            frag.appendChild(child);
++        }
+ 
+-/**
+- * Adds two mat4's
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    out[4] = a[4] + b[4];
+-    out[5] = a[5] + b[5];
+-    out[6] = a[6] + b[6];
+-    out[7] = a[7] + b[7];
+-    out[8] = a[8] + b[8];
+-    out[9] = a[9] + b[9];
+-    out[10] = a[10] + b[10];
+-    out[11] = a[11] + b[11];
+-    out[12] = a[12] + b[12];
+-    out[13] = a[13] + b[13];
+-    out[14] = a[14] + b[14];
+-    out[15] = a[15] + b[15];
+-    return out;
+-};
++        return this.setDOMContent(frag);
++    },
+ 
+-/**
+- * Subtracts matrix b from matrix a
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @returns {mat4} out
+- */
+-mat4.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    out[4] = a[4] - b[4];
+-    out[5] = a[5] - b[5];
+-    out[6] = a[6] - b[6];
+-    out[7] = a[7] - b[7];
+-    out[8] = a[8] - b[8];
+-    out[9] = a[9] - b[9];
+-    out[10] = a[10] - b[10];
+-    out[11] = a[11] - b[11];
+-    out[12] = a[12] - b[12];
+-    out[13] = a[13] - b[13];
+-    out[14] = a[14] - b[14];
+-    out[15] = a[15] - b[15];
+-    return out;
+-};
++    /**
++     * Fill a popup element with DOM content
++     * @param {Node} htmlNode Popup content as a DOM node
++     * @returns {Popup} `this`
++     * @example
++     * // create an element with the popup content
++     * var div = document.createElement('div');
++     * div.innerHTML = 'Hello, world!';
++     * var tooltip = new mapboxgl.Popup()
++     *   .setLngLat(e.lngLat)
++     *   .setDOMContent(div)
++     *   .addTo(map);
++     */
++    setDOMContent: function(htmlNode) {
++        this._createContent();
++        this._content.appendChild(htmlNode);
++        this._update();
++        return this;
++    },
+ 
+-/**
+- * Alias for {@link mat4.subtract}
+- * @function
+- */
+-mat4.sub = mat4.subtract;
++    _createContent: function() {
++        if (this._content && this._content.parentNode) {
++            this._content.parentNode.removeChild(this._content);
++        }
+ 
+-/**
+- * Multiply each element of the matrix by a scalar.
+- *
+- * @param {mat4} out the receiving matrix
+- * @param {mat4} a the matrix to scale
+- * @param {Number} b amount to scale the matrix's elements by
+- * @returns {mat4} out
+- */
+-mat4.multiplyScalar = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    out[4] = a[4] * b;
+-    out[5] = a[5] * b;
+-    out[6] = a[6] * b;
+-    out[7] = a[7] * b;
+-    out[8] = a[8] * b;
+-    out[9] = a[9] * b;
+-    out[10] = a[10] * b;
+-    out[11] = a[11] * b;
+-    out[12] = a[12] * b;
+-    out[13] = a[13] * b;
+-    out[14] = a[14] * b;
+-    out[15] = a[15] * b;
+-    return out;
+-};
++        this._content = DOM.create('div', 'mapboxgl-popup-content', this._container);
+ 
+-/**
+- * Adds two mat4's after multiplying each element of the second operand by a scalar value.
+- *
+- * @param {mat4} out the receiving vector
+- * @param {mat4} a the first operand
+- * @param {mat4} b the second operand
+- * @param {Number} scale the amount to scale b's elements by before adding
+- * @returns {mat4} out
+- */
+-mat4.multiplyScalarAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    out[4] = a[4] + (b[4] * scale);
+-    out[5] = a[5] + (b[5] * scale);
+-    out[6] = a[6] + (b[6] * scale);
+-    out[7] = a[7] + (b[7] * scale);
+-    out[8] = a[8] + (b[8] * scale);
+-    out[9] = a[9] + (b[9] * scale);
+-    out[10] = a[10] + (b[10] * scale);
+-    out[11] = a[11] + (b[11] * scale);
+-    out[12] = a[12] + (b[12] * scale);
+-    out[13] = a[13] + (b[13] * scale);
+-    out[14] = a[14] + (b[14] * scale);
+-    out[15] = a[15] + (b[15] * scale);
+-    return out;
+-};
++        if (this.options.closeButton) {
++            this._closeButton = DOM.create('button', 'mapboxgl-popup-close-button', this._content);
++            this._closeButton.innerHTML = '&#215;';
++            this._closeButton.addEventListener('click', this._onClickClose);
++        }
++    },
+ 
+-/**
+- * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {mat4} a The first matrix.
+- * @param {mat4} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat4.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && 
+-           a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && 
+-           a[8] === b[8] && a[9] === b[9] && a[10] === b[10] && a[11] === b[11] &&
+-           a[12] === b[12] && a[13] === b[13] && a[14] === b[14] && a[15] === b[15];
+-};
++    _update: function() {
++        if (!this._map || !this._lngLat || !this._content) { return; }
+ 
+-/**
+- * Returns whether or not the matrices have approximately the same elements in the same position.
+- *
+- * @param {mat4} a The first matrix.
+- * @param {mat4} b The second matrix.
+- * @returns {Boolean} True if the matrices are equal, false otherwise.
+- */
+-mat4.equals = function (a, b) {
+-    var a0  = a[0],  a1  = a[1],  a2  = a[2],  a3  = a[3],
+-        a4  = a[4],  a5  = a[5],  a6  = a[6],  a7  = a[7], 
+-        a8  = a[8],  a9  = a[9],  a10 = a[10], a11 = a[11], 
+-        a12 = a[12], a13 = a[13], a14 = a[14], a15 = a[15];
++        if (!this._container) {
++            this._container = DOM.create('div', 'mapboxgl-popup', this._map.getContainer());
++            this._tip       = DOM.create('div', 'mapboxgl-popup-tip', this._container);
++            this._container.appendChild(this._content);
++        }
+ 
+-    var b0  = b[0],  b1  = b[1],  b2  = b[2],  b3  = b[3],
+-        b4  = b[4],  b5  = b[5],  b6  = b[6],  b7  = b[7], 
+-        b8  = b[8],  b9  = b[9],  b10 = b[10], b11 = b[11], 
+-        b12 = b[12], b13 = b[13], b14 = b[14], b15 = b[15];
++        var pos = this._map.project(this._lngLat).round(),
++            anchor = this.options.anchor;
+ 
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
+-            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
+-            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
+-            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
+-            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
+-            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)) &&
+-            Math.abs(a9 - b9) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a9), Math.abs(b9)) &&
+-            Math.abs(a10 - b10) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a10), Math.abs(b10)) &&
+-            Math.abs(a11 - b11) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a11), Math.abs(b11)) &&
+-            Math.abs(a12 - b12) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a12), Math.abs(b12)) &&
+-            Math.abs(a13 - b13) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a13), Math.abs(b13)) &&
+-            Math.abs(a14 - b14) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a14), Math.abs(b14)) &&
+-            Math.abs(a15 - b15) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a15), Math.abs(b15)));
+-};
++        if (!anchor) {
++            var width = this._container.offsetWidth,
++                height = this._container.offsetHeight;
+ 
++            if (pos.y < height) {
++                anchor = ['top'];
++            } else if (pos.y > this._map.transform.height - height) {
++                anchor = ['bottom'];
++            } else {
++                anchor = [];
++            }
+ 
++            if (pos.x < width / 2) {
++                anchor.push('left');
++            } else if (pos.x > this._map.transform.width - width / 2) {
++                anchor.push('right');
++            }
+ 
+-module.exports = mat4;
++            if (anchor.length === 0) {
++                anchor = 'bottom';
++            } else {
++                anchor = anchor.join('-');
++            }
++        }
+ 
+-},{"./common.js":364}],369:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++        var anchorTranslate = {
++            'top': 'translate(-50%,0)',
++            'top-left': 'translate(0,0)',
++            'top-right': 'translate(-100%,0)',
++            'bottom': 'translate(-50%,-100%)',
++            'bottom-left': 'translate(0,-100%)',
++            'bottom-right': 'translate(-100%,-100%)',
++            'left': 'translate(0,-50%)',
++            'right': 'translate(-100%,-50%)'
++        };
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++        var classList = this._container.classList;
++        for (var key in anchorTranslate) {
++            classList.remove('mapboxgl-popup-anchor-' + key);
++        }
++        classList.add('mapboxgl-popup-anchor-' + anchor);
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++        DOM.setTransform(this._container, anchorTranslate[anchor] + ' translate(' + pos.x + 'px,' + pos.y + 'px)');
++    },
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    _onClickClose: function() {
++        this.remove();
++    }
++});
+ 
+-var glMatrix = require("./common.js");
+-var mat3 = require("./mat3.js");
+-var vec3 = require("./vec3.js");
+-var vec4 = require("./vec4.js");
++},{"../geo/lng_lat":269,"../util/dom":351,"../util/evented":354,"../util/util":362}],346:[function(require,module,exports){
++'use strict';
++
++module.exports = Actor;
++
++/**
++ * An implementation of the [Actor design pattern](http://en.wikipedia.org/wiki/Actor_model)
++ * that maintains the relationship between asynchronous tasks and the objects
++ * that spin them off - in this case, tasks like parsing parts of styles,
++ * owned by the styles
++ *
++ * @param {WebWorker} target
++ * @param {WebWorker} parent
++ * @private
++ */
++function Actor(target, parent) {
++    this.target = target;
++    this.parent = parent;
++    this.callbacks = {};
++    this.callbackID = 0;
++    this.receive = this.receive.bind(this);
++    this.target.addEventListener('message', this.receive, false);
++}
++
++Actor.prototype.receive = function(message) {
++    var data = message.data,
++        callback;
++
++    if (data.type === '<response>') {
++        callback = this.callbacks[data.id];
++        delete this.callbacks[data.id];
++        callback(data.error || null, data.data);
++    } else if (typeof data.id !== 'undefined') {
++        var id = data.id;
++        this.parent[data.type](data.data, function(err, data, buffers) {
++            this.postMessage({
++                type: '<response>',
++                id: String(id),
++                error: err ? String(err) : null,
++                data: data
++            }, buffers);
++        }.bind(this));
++    } else {
++        this.parent[data.type](data.data);
++    }
++};
+ 
+-/**
+- * @class Quaternion
+- * @name quat
+- */
+-var quat = {};
++Actor.prototype.send = function(type, data, callback, buffers) {
++    var id = null;
++    if (callback) this.callbacks[id = this.callbackID++] = callback;
++    this.postMessage({ type: type, id: String(id), data: data }, buffers);
++};
+ 
+ /**
+- * Creates a new identity quat
++ * Wrapped postMessage API that abstracts around IE's lack of
++ * `transferList` support.
+  *
+- * @returns {quat} a new quaternion
++ * @param {Object} message
++ * @param {Object} transferList
++ * @private
+  */
+-quat.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
++Actor.prototype.postMessage = function(message, transferList) {
++    this.target.postMessage(message, transferList);
+ };
+ 
+-/**
+- * Sets a quaternion to represent the shortest rotation from one
+- * vector to another.
+- *
+- * Both vectors are assumed to be unit length.
+- *
+- * @param {quat} out the receiving quaternion.
+- * @param {vec3} a the initial vector
+- * @param {vec3} b the destination vector
+- * @returns {quat} out
+- */
+-quat.rotationTo = (function() {
+-    var tmpvec3 = vec3.create();
+-    var xUnitVec3 = vec3.fromValues(1,0,0);
+-    var yUnitVec3 = vec3.fromValues(0,1,0);
++},{}],347:[function(require,module,exports){
++'use strict';
+ 
+-    return function(out, a, b) {
+-        var dot = vec3.dot(a, b);
+-        if (dot < -0.999999) {
+-            vec3.cross(tmpvec3, xUnitVec3, a);
+-            if (vec3.length(tmpvec3) < 0.000001)
+-                vec3.cross(tmpvec3, yUnitVec3, a);
+-            vec3.normalize(tmpvec3, tmpvec3);
+-            quat.setAxisAngle(out, tmpvec3, Math.PI);
+-            return out;
+-        } else if (dot > 0.999999) {
+-            out[0] = 0;
+-            out[1] = 0;
+-            out[2] = 0;
+-            out[3] = 1;
+-            return out;
++exports.getJSON = function(url, callback) {
++    var xhr = new XMLHttpRequest();
++    xhr.open('GET', url, true);
++    xhr.setRequestHeader('Accept', 'application/json');
++    xhr.onerror = function(e) {
++        callback(e);
++    };
++    xhr.onload = function() {
++        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
++            var data;
++            try {
++                data = JSON.parse(xhr.response);
++            } catch (err) {
++                return callback(err);
++            }
++            callback(null, data);
+         } else {
+-            vec3.cross(tmpvec3, a, b);
+-            out[0] = tmpvec3[0];
+-            out[1] = tmpvec3[1];
+-            out[2] = tmpvec3[2];
+-            out[3] = 1 + dot;
+-            return quat.normalize(out, out);
++            callback(new Error(xhr.statusText));
+         }
+     };
+-})();
+-
+-/**
+- * Sets the specified quaternion with values corresponding to the given
+- * axes. Each axis is a vec3 and is expected to be unit length and
+- * perpendicular to all other specified axes.
+- *
+- * @param {vec3} view  the vector representing the viewing direction
+- * @param {vec3} right the vector representing the local "right" direction
+- * @param {vec3} up    the vector representing the local "up" direction
+- * @returns {quat} out
+- */
+-quat.setAxes = (function() {
+-    var matr = mat3.create();
++    xhr.send();
++    return xhr;
++};
+ 
+-    return function(out, view, right, up) {
+-        matr[0] = right[0];
+-        matr[3] = right[1];
+-        matr[6] = right[2];
++exports.getArrayBuffer = function(url, callback) {
++    var xhr = new XMLHttpRequest();
++    xhr.open('GET', url, true);
++    xhr.responseType = 'arraybuffer';
++    xhr.onerror = function(e) {
++        callback(e);
++    };
++    xhr.onload = function() {
++        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
++            callback(null, xhr.response);
++        } else {
++            callback(new Error(xhr.statusText));
++        }
++    };
++    xhr.send();
++    return xhr;
++};
+ 
+-        matr[1] = up[0];
+-        matr[4] = up[1];
+-        matr[7] = up[2];
++function sameOrigin(url) {
++    var a = document.createElement('a');
++    a.href = url;
++    return a.protocol === document.location.protocol && a.host === document.location.host;
++}
+ 
+-        matr[2] = -view[0];
+-        matr[5] = -view[1];
+-        matr[8] = -view[2];
++exports.getImage = function(url, callback) {
++    return exports.getArrayBuffer(url, function(err, imgData) {
++        if (err) return callback(err);
++        var img = new Image();
++        img.onload = function() {
++            callback(null, img);
++            (window.URL || window.webkitURL).revokeObjectURL(img.src);
++        };
++        var blob = new Blob([new Uint8Array(imgData)], { type: 'image/png' });
++        img.src = (window.URL || window.webkitURL).createObjectURL(blob);
++        img.getData = function() {
++            var canvas = document.createElement('canvas');
++            var context = canvas.getContext('2d');
++            canvas.width = img.width;
++            canvas.height = img.height;
++            context.drawImage(img, 0, 0);
++            return context.getImageData(0, 0, img.width, img.height).data;
++        };
++        return img;
++    });
++};
+ 
+-        return quat.normalize(out, quat.fromMat3(out, matr));
++exports.getVideo = function(urls, callback) {
++    var video = document.createElement('video');
++    video.onloadstart = function() {
++        callback(null, video);
+     };
+-})();
++    for (var i = 0; i < urls.length; i++) {
++        var s = document.createElement('source');
++        if (!sameOrigin(urls[i])) {
++            video.crossOrigin = 'Anonymous';
++        }
++        s.src = urls[i];
++        video.appendChild(s);
++    }
++    video.getData = function() { return video; };
++    return video;
++};
+ 
+-/**
+- * Creates a new quat initialized with values from an existing quaternion
+- *
+- * @param {quat} a quaternion to clone
+- * @returns {quat} a new quaternion
+- * @function
+- */
+-quat.clone = vec4.clone;
++},{}],348:[function(require,module,exports){
++'use strict';
+ 
+ /**
+- * Creates a new quat initialized with the given values
+- *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {quat} a new quaternion
+- * @function
++ * Unlike js/util/browser.js, this code is written with the expectation
++ * of a browser environment with a global 'window' object
++ * @module browser
++ * @private
+  */
+-quat.fromValues = vec4.fromValues;
+ 
+ /**
+- * Copy the values from one quat to another
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the source quaternion
+- * @returns {quat} out
+- * @function
++ * Provides a function that outputs milliseconds: either performance.now()
++ * or a fallback to Date.now()
+  */
+-quat.copy = vec4.copy;
++module.exports.now = (function() {
++    if (window.performance &&
++        window.performance.now) {
++        return window.performance.now.bind(window.performance);
++    } else {
++        return Date.now.bind(Date);
++    }
++}());
+ 
+-/**
+- * Set the components of a quat to the given values
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {quat} out
+- * @function
+- */
+-quat.set = vec4.set;
++var frame = window.requestAnimationFrame ||
++    window.mozRequestAnimationFrame ||
++    window.webkitRequestAnimationFrame ||
++    window.msRequestAnimationFrame;
+ 
+-/**
+- * Set a quat to the identity quaternion
+- *
+- * @param {quat} out the receiving quaternion
+- * @returns {quat} out
+- */
+-quat.identity = function(out) {
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 1;
+-    return out;
++exports.frame = function(fn) {
++    return frame(fn);
+ };
+ 
+-/**
+- * Sets a quat from the given angle and rotation axis,
+- * then returns it.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {vec3} axis the axis around which to rotate
+- * @param {Number} rad the angle in radians
+- * @returns {quat} out
+- **/
+-quat.setAxisAngle = function(out, axis, rad) {
+-    rad = rad * 0.5;
+-    var s = Math.sin(rad);
+-    out[0] = s * axis[0];
+-    out[1] = s * axis[1];
+-    out[2] = s * axis[2];
+-    out[3] = Math.cos(rad);
+-    return out;
++var cancel = window.cancelAnimationFrame ||
++    window.mozCancelAnimationFrame ||
++    window.webkitCancelAnimationFrame ||
++    window.msCancelAnimationFrame;
++
++exports.cancelFrame = function(id) {
++    cancel(id);
+ };
+ 
+-/**
+- * Gets the rotation axis and angle for a given
+- *  quaternion. If a quaternion is created with
+- *  setAxisAngle, this method will return the same
+- *  values as providied in the original parameter list
+- *  OR functionally equivalent values.
+- * Example: The quaternion formed by axis [0, 0, 1] and
+- *  angle -90 is the same as the quaternion formed by
+- *  [0, 0, 1] and 270. This method favors the latter.
+- * @param  {vec3} out_axis  Vector receiving the axis of rotation
+- * @param  {quat} q     Quaternion to be decomposed
+- * @return {Number}     Angle, in radians, of the rotation
+- */
+-quat.getAxisAngle = function(out_axis, q) {
+-    var rad = Math.acos(q[3]) * 2.0;
+-    var s = Math.sin(rad / 2.0);
+-    if (s != 0.0) {
+-        out_axis[0] = q[0] / s;
+-        out_axis[1] = q[1] / s;
+-        out_axis[2] = q[2] / s;
+-    } else {
+-        // If s is zero, return any axis (no rotation - axis does not matter)
+-        out_axis[0] = 1;
+-        out_axis[1] = 0;
+-        out_axis[2] = 0;
++exports.timed = function (fn, dur, ctx) {
++    if (!dur) {
++        fn.call(ctx, 1);
++        return null;
+     }
+-    return rad;
+-};
+ 
+-/**
+- * Adds two quat's
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @returns {quat} out
+- * @function
+- */
+-quat.add = vec4.add;
++    var abort = false,
++        start = module.exports.now();
+ 
+-/**
+- * Multiplies two quat's
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @returns {quat} out
+- */
+-quat.multiply = function(out, a, b) {
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bx = b[0], by = b[1], bz = b[2], bw = b[3];
++    function tick(now) {
++        if (abort) return;
++        now = module.exports.now();
+ 
+-    out[0] = ax * bw + aw * bx + ay * bz - az * by;
+-    out[1] = ay * bw + aw * by + az * bx - ax * bz;
+-    out[2] = az * bw + aw * bz + ax * by - ay * bx;
+-    out[3] = aw * bw - ax * bx - ay * by - az * bz;
+-    return out;
++        if (now >= start + dur) {
++            fn.call(ctx, 1);
++        } else {
++            fn.call(ctx, (now - start) / dur);
++            exports.frame(tick);
++        }
++    }
++
++    exports.frame(tick);
++
++    return function() { abort = true; };
+ };
+ 
+ /**
+- * Alias for {@link quat.multiply}
+- * @function
++ * Test if the current browser supports Mapbox GL JS
++ * @param {Object} options
++ * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
++ *   if the performance of Mapbox GL JS would be dramatically worse than
++ *   expected (i.e. a software renderer would be used)
++ * @return {boolean}
+  */
+-quat.mul = quat.multiply;
++exports.supported = require('mapbox-gl-js-supported');
+ 
+-/**
+- * Scales a quat by a scalar number
+- *
+- * @param {quat} out the receiving vector
+- * @param {quat} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {quat} out
+- * @function
+- */
+-quat.scale = vec4.scale;
++exports.hardwareConcurrency = navigator.hardwareConcurrency || 8;
+ 
+-/**
+- * Rotates a quaternion by the given angle about the X axis
+- *
+- * @param {quat} out quat receiving operation result
+- * @param {quat} a quat to rotate
+- * @param {number} rad angle (in radians) to rotate
+- * @returns {quat} out
+- */
+-quat.rotateX = function (out, a, rad) {
+-    rad *= 0.5; 
++Object.defineProperty(exports, 'devicePixelRatio', {
++    get: function() { return window.devicePixelRatio; }
++});
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bx = Math.sin(rad), bw = Math.cos(rad);
++exports.supportsWebp = false;
+ 
+-    out[0] = ax * bw + aw * bx;
+-    out[1] = ay * bw + az * bx;
+-    out[2] = az * bw - ay * bx;
+-    out[3] = aw * bw - ax * bx;
+-    return out;
++var webpImgTest = document.createElement('img');
++webpImgTest.onload = function() {
++    exports.supportsWebp = true;
+ };
++webpImgTest.src = 'data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=';
+ 
+-/**
+- * Rotates a quaternion by the given angle about the Y axis
+- *
+- * @param {quat} out quat receiving operation result
+- * @param {quat} a quat to rotate
+- * @param {number} rad angle (in radians) to rotate
+- * @returns {quat} out
+- */
+-quat.rotateY = function (out, a, rad) {
+-    rad *= 0.5; 
++exports.supportsGeolocation = !!navigator.geolocation;
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        by = Math.sin(rad), bw = Math.cos(rad);
++},{"mapbox-gl-js-supported":234}],349:[function(require,module,exports){
++'use strict';
+ 
+-    out[0] = ax * bw - az * by;
+-    out[1] = ay * bw + aw * by;
+-    out[2] = az * bw + ax * by;
+-    out[3] = aw * bw - ay * by;
+-    return out;
++var util = require('../util');
++var isSupported = require('mapbox-gl-js-supported');
++
++module.exports = Canvas;
++
++function Canvas(parent, container) {
++    this.canvas = document.createElement('canvas');
++
++    if (parent && container) {
++        this.canvas.style.position = 'absolute';
++        this.canvas.classList.add('mapboxgl-canvas');
++        this.canvas.addEventListener('webglcontextlost', parent._contextLost.bind(parent), false);
++        this.canvas.addEventListener('webglcontextrestored', parent._contextRestored.bind(parent), false);
++        this.canvas.setAttribute('tabindex', 0);
++        container.appendChild(this.canvas);
++    }
++}
++
++Canvas.prototype.resize = function(width, height) {
++    var pixelRatio = window.devicePixelRatio || 1;
++
++    // Request the required canvas size taking the pixelratio into account.
++    this.canvas.width = pixelRatio * width;
++    this.canvas.height = pixelRatio * height;
++
++    // Maintain the same canvas size, potentially downscaling it for HiDPI displays
++    this.canvas.style.width = width + 'px';
++    this.canvas.style.height = height + 'px';
+ };
+ 
+-/**
+- * Rotates a quaternion by the given angle about the Z axis
+- *
+- * @param {quat} out quat receiving operation result
+- * @param {quat} a quat to rotate
+- * @param {number} rad angle (in radians) to rotate
+- * @returns {quat} out
+- */
+-quat.rotateZ = function (out, a, rad) {
+-    rad *= 0.5; 
++Canvas.prototype.getWebGLContext = function(attributes) {
++    attributes = util.extend({}, attributes, isSupported.webGLContextAttributes);
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bz = Math.sin(rad), bw = Math.cos(rad);
++    return this.canvas.getContext('webgl', attributes) ||
++        this.canvas.getContext('experimental-webgl', attributes);
++};
+ 
+-    out[0] = ax * bw + ay * bz;
+-    out[1] = ay * bw - ax * bz;
+-    out[2] = az * bw + aw * bz;
+-    out[3] = aw * bw - az * bz;
+-    return out;
++Canvas.prototype.getElement = function() {
++    return this.canvas;
+ };
+ 
+-/**
+- * Calculates the W component of a quat from the X, Y, and Z components.
+- * Assumes that quaternion is 1 unit in length.
+- * Any existing W component will be ignored.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quat to calculate W component of
+- * @returns {quat} out
+- */
+-quat.calculateW = function (out, a) {
+-    var x = a[0], y = a[1], z = a[2];
++},{"../util":362,"mapbox-gl-js-supported":234}],350:[function(require,module,exports){
++'use strict';
+ 
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    out[3] = Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));
+-    return out;
++var Actor = require('../actor');
++var WebWorkify = require('webworkify');
++
++module.exports = Dispatcher;
++
++function Dispatcher(length, parent) {
++    this.actors = [];
++    this.currentActor = 0;
++    for (var i = 0; i < length; i++) {
++        var worker = new WebWorkify(require('../../source/worker'));
++        var actor = new Actor(worker, parent);
++        actor.name = "Worker " + i;
++        this.actors.push(actor);
++    }
++}
++
++Dispatcher.prototype = {
++    broadcast: function(type, data) {
++        for (var i = 0; i < this.actors.length; i++) {
++            this.actors[i].send(type, data);
++        }
++    },
++
++    send: function(type, data, callback, targetID, buffers) {
++        if (typeof targetID !== 'number' || isNaN(targetID)) {
++            // Use round robin to send requests to web workers.
++            targetID = this.currentActor = (this.currentActor + 1) % this.actors.length;
++        }
++
++        this.actors[targetID].send(type, data, callback, buffers);
++        return targetID;
++    },
++
++    remove: function() {
++        for (var i = 0; i < this.actors.length; i++) {
++            this.actors[i].target.terminate();
++        }
++        this.actors = [];
++    }
+ };
+ 
+-/**
+- * Calculates the dot product of two quat's
+- *
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @returns {Number} dot product of a and b
+- * @function
+- */
+-quat.dot = vec4.dot;
++},{"../../source/worker":298,"../actor":346,"webworkify":469}],351:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Performs a linear interpolation between two quat's
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {quat} out
+- * @function
+- */
+-quat.lerp = vec4.lerp;
++var Point = require('point-geometry');
+ 
+-/**
+- * Performs a spherical linear interpolation between two quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {quat} out
+- */
+-quat.slerp = function (out, a, b, t) {
+-    // benchmarks:
+-    //    http://jsperf.com/quaternion-slerp-implementations
++exports.create = function (tagName, className, container) {
++    var el = document.createElement(tagName);
++    if (className) el.className = className;
++    if (container) container.appendChild(el);
++    return el;
++};
+ 
+-    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+-        bx = b[0], by = b[1], bz = b[2], bw = b[3];
++var docStyle = document.documentElement.style;
+ 
+-    var        omega, cosom, sinom, scale0, scale1;
++function testProp(props) {
++    for (var i = 0; i < props.length; i++) {
++        if (props[i] in docStyle) {
++            return props[i];
++        }
++    }
++}
+ 
+-    // calc cosine
+-    cosom = ax * bx + ay * by + az * bz + aw * bw;
+-    // adjust signs (if necessary)
+-    if ( cosom < 0.0 ) {
+-        cosom = -cosom;
+-        bx = - bx;
+-        by = - by;
+-        bz = - bz;
+-        bw = - bw;
++var selectProp = testProp(['userSelect', 'MozUserSelect', 'WebkitUserSelect', 'msUserSelect']),
++    userSelect;
++exports.disableDrag = function () {
++    if (selectProp) {
++        userSelect = docStyle[selectProp];
++        docStyle[selectProp] = 'none';
+     }
+-    // calculate coefficients
+-    if ( (1.0 - cosom) > 0.000001 ) {
+-        // standard case (slerp)
+-        omega  = Math.acos(cosom);
+-        sinom  = Math.sin(omega);
+-        scale0 = Math.sin((1.0 - t) * omega) / sinom;
+-        scale1 = Math.sin(t * omega) / sinom;
+-    } else {        
+-        // "from" and "to" quaternions are very close 
+-        //  ... so we can do a linear interpolation
+-        scale0 = 1.0 - t;
+-        scale1 = t;
++};
++exports.enableDrag = function () {
++    if (selectProp) {
++        docStyle[selectProp] = userSelect;
+     }
+-    // calculate final values
+-    out[0] = scale0 * ax + scale1 * bx;
+-    out[1] = scale0 * ay + scale1 * by;
+-    out[2] = scale0 * az + scale1 * bz;
+-    out[3] = scale0 * aw + scale1 * bw;
+-    
+-    return out;
+ };
+ 
+-/**
+- * Performs a spherical linear interpolation with two control points
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a the first operand
+- * @param {quat} b the second operand
+- * @param {quat} c the third operand
+- * @param {quat} d the fourth operand
+- * @param {Number} t interpolation amount
+- * @returns {quat} out
+- */
+-quat.sqlerp = (function () {
+-  var temp1 = quat.create();
+-  var temp2 = quat.create();
+-  
+-  return function (out, a, b, c, d, t) {
+-    quat.slerp(temp1, a, d, t);
+-    quat.slerp(temp2, b, c, t);
+-    quat.slerp(out, temp1, temp2, 2 * t * (1 - t));
+-    
+-    return out;
+-  };
+-}());
+-
+-/**
+- * Calculates the inverse of a quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quat to calculate inverse of
+- * @returns {quat} out
+- */
+-quat.invert = function(out, a) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+-        dot = a0*a0 + a1*a1 + a2*a2 + a3*a3,
+-        invDot = dot ? 1.0/dot : 0;
+-    
+-    // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0
++var transformProp = testProp(['transform', 'WebkitTransform']);
++exports.setTransform = function(el, value) {
++    el.style[transformProp] = value;
++};
+ 
+-    out[0] = -a0*invDot;
+-    out[1] = -a1*invDot;
+-    out[2] = -a2*invDot;
+-    out[3] = a3*invDot;
+-    return out;
++// Suppress the next click, but only if it's immediate.
++function suppressClick(e) {
++    e.preventDefault();
++    e.stopPropagation();
++    window.removeEventListener('click', suppressClick, true);
++}
++exports.suppressClick = function() {
++    window.addEventListener('click', suppressClick, true);
++    window.setTimeout(function() {
++        window.removeEventListener('click', suppressClick, true);
++    }, 0);
+ };
+ 
+-/**
+- * Calculates the conjugate of a quat
+- * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quat to calculate conjugate of
+- * @returns {quat} out
+- */
+-quat.conjugate = function (out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    out[3] = a[3];
+-    return out;
++exports.mousePos = function (el, e) {
++    var rect = el.getBoundingClientRect();
++    e = e.touches ? e.touches[0] : e;
++    return new Point(
++        e.clientX - rect.left - el.clientLeft,
++        e.clientY - rect.top - el.clientTop
++    );
+ };
+ 
+-/**
+- * Calculates the length of a quat
+- *
+- * @param {quat} a vector to calculate length of
+- * @returns {Number} length of a
+- * @function
+- */
+-quat.length = vec4.length;
++exports.touchPos = function (el, e) {
++    var rect = el.getBoundingClientRect(),
++        points = [];
++    for (var i = 0; i < e.touches.length; i++) {
++        points.push(new Point(
++            e.touches[i].clientX - rect.left - el.clientLeft,
++            e.touches[i].clientY - rect.top - el.clientTop
++        ));
++    }
++    return points;
++};
+ 
+-/**
+- * Alias for {@link quat.length}
+- * @function
+- */
+-quat.len = quat.length;
++},{"point-geometry":400}],352:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Calculates the squared length of a quat
+- *
+- * @param {quat} a vector to calculate squared length of
+- * @returns {Number} squared length of a
+- * @function
+- */
+-quat.squaredLength = vec4.squaredLength;
++module.exports = {
++    API_URL: 'https://api.mapbox.com',
++    REQUIRE_ACCESS_TOKEN: true
++};
+ 
+-/**
+- * Alias for {@link quat.squaredLength}
+- * @function
+- */
+-quat.sqrLen = quat.squaredLength;
++},{}],353:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Normalize a quat
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {quat} a quaternion to normalize
+- * @returns {quat} out
+- * @function
+- */
+-quat.normalize = vec4.normalize;
++var assert = require('assert');
+ 
+-/**
+- * Creates a quaternion from the given 3x3 rotation matrix.
+- *
+- * NOTE: The resultant quaternion is not normalized, so you should be sure
+- * to renormalize the quaternion yourself where necessary.
+- *
+- * @param {quat} out the receiving quaternion
+- * @param {mat3} m rotation matrix
+- * @returns {quat} out
+- * @function
+- */
+-quat.fromMat3 = function(out, m) {
+-    // Algorithm in Ken Shoemake's article in 1987 SIGGRAPH course notes
+-    // article "Quaternion Calculus and Fast Animation".
+-    var fTrace = m[0] + m[4] + m[8];
+-    var fRoot;
++module.exports = DictionaryCoder;
+ 
+-    if ( fTrace > 0.0 ) {
+-        // |w| > 1/2, may as well choose w > 1/2
+-        fRoot = Math.sqrt(fTrace + 1.0);  // 2w
+-        out[3] = 0.5 * fRoot;
+-        fRoot = 0.5/fRoot;  // 1/(4w)
+-        out[0] = (m[5]-m[7])*fRoot;
+-        out[1] = (m[6]-m[2])*fRoot;
+-        out[2] = (m[1]-m[3])*fRoot;
+-    } else {
+-        // |w| <= 1/2
+-        var i = 0;
+-        if ( m[4] > m[0] )
+-          i = 1;
+-        if ( m[8] > m[i*3+i] )
+-          i = 2;
+-        var j = (i+1)%3;
+-        var k = (i+2)%3;
+-        
+-        fRoot = Math.sqrt(m[i*3+i]-m[j*3+j]-m[k*3+k] + 1.0);
+-        out[i] = 0.5 * fRoot;
+-        fRoot = 0.5 / fRoot;
+-        out[3] = (m[j*3+k] - m[k*3+j]) * fRoot;
+-        out[j] = (m[j*3+i] + m[i*3+j]) * fRoot;
+-        out[k] = (m[k*3+i] + m[i*3+k]) * fRoot;
++function DictionaryCoder(strings) {
++    this._stringToNumber = {};
++    this._numberToString = [];
++    for (var i = 0; i < strings.length; i++) {
++        var string = strings[i];
++        this._stringToNumber[string] = i;
++        this._numberToString[i] = string;
+     }
+-    
+-    return out;
++}
++
++DictionaryCoder.prototype.encode = function(string) {
++    assert(string in this._stringToNumber);
++    return this._stringToNumber[string];
+ };
+ 
+-/**
+- * Returns a string representation of a quatenion
+- *
+- * @param {quat} vec vector to represent as a string
+- * @returns {String} string representation of the vector
+- */
+-quat.str = function (a) {
+-    return 'quat(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
++DictionaryCoder.prototype.decode = function(n) {
++    assert(n < this._numberToString.length);
++    return this._numberToString[n];
+ };
+ 
+-/**
+- * Returns whether or not the quaternions have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {quat} a The first quaternion.
+- * @param {quat} b The second quaternion.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-quat.exactEquals = vec4.exactEquals;
++},{"assert":29}],354:[function(require,module,exports){
++'use strict';
++
++var util = require('./util');
+ 
+ /**
+- * Returns whether or not the quaternions have approximately the same elements in the same position.
+- *
+- * @param {quat} a The first vector.
+- * @param {quat} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * Methods mixed in to other classes for event capabilities.
++ * @mixin Evented
+  */
+-quat.equals = vec4.equals;
++var Evented = {
+ 
+-module.exports = quat;
++    /**
++     * Subscribe to a specified event with a listener function the latter gets the data object that was passed to `fire` and additionally `target` and `type` properties
++     *
++     * @param {string} type Event type
++     * @param {Function} listener Function to be called when the event is fired
++     * @returns {Object} `this`
++     */
++    on: function(type, listener) {
++        this._events = this._events || {};
++        this._events[type] = this._events[type] || [];
++        this._events[type].push(listener);
+ 
+-},{"./common.js":364,"./mat3.js":367,"./vec3.js":371,"./vec4.js":372}],370:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
++        return this;
++    },
+ 
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
++    /**
++     * Remove a event listener
++     *
++     * @param {string} [type] Event type. If none is specified, remove all listeners
++     * @param {Function} [listener] Function to be called when the event is fired. If none is specified all listeners are removed
++     * @returns {Object} `this`
++     */
++    off: function(type, listener) {
++        if (!type) {
++            // clear all listeners if no arguments specified
++            delete this._events;
++            return this;
++        }
+ 
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++        if (!this.listens(type)) return this;
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++        if (listener) {
++            var idx = this._events[type].indexOf(listener);
++            if (idx >= 0) {
++                this._events[type].splice(idx, 1);
++            }
++            if (!this._events[type].length) {
++                delete this._events[type];
++            }
++        } else {
++            delete this._events[type];
++        }
+ 
+-var glMatrix = require("./common.js");
++        return this;
++    },
+ 
+-/**
+- * @class 2 Dimensional Vector
+- * @name vec2
+- */
+-var vec2 = {};
++    /**
++     * Call a function once when an event has fired
++     *
++     * @param {string} type Event type.
++     * @param {Function} listener Function to be called once when the event is fired
++     * @returns {Object} `this`
++     */
++    once: function(type, listener) {
++        var wrapper = function(data) {
++            this.off(type, wrapper);
++            listener.call(this, data);
++        }.bind(this);
++        this.on(type, wrapper);
++        return this;
++    },
+ 
+-/**
+- * Creates a new, empty vec2
+- *
+- * @returns {vec2} a new 2D vector
+- */
+-vec2.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(2);
+-    out[0] = 0;
+-    out[1] = 0;
+-    return out;
+-};
++    /**
++     * Fire event of a given string type with the given data object
++     *
++     * @param {string} type Event type
++     * @param {Object} [data] Optional data passed to the event receiver (e.g. {@link #EventData})
++     * @returns {Object} `this`
++     */
++    fire: function(type, data) {
++        if (!this.listens(type)) return this;
+ 
+-/**
+- * Creates a new vec2 initialized with values from an existing vector
+- *
+- * @param {vec2} a vector to clone
+- * @returns {vec2} a new 2D vector
+- */
+-vec2.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(2);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    return out;
+-};
++        data = util.extend({}, data);
++        util.extend(data, {type: type, target: this});
+ 
+-/**
+- * Creates a new vec2 initialized with the given values
+- *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @returns {vec2} a new 2D vector
+- */
+-vec2.fromValues = function(x, y) {
+-    var out = new glMatrix.ARRAY_TYPE(2);
+-    out[0] = x;
+-    out[1] = y;
+-    return out;
+-};
++        // make sure adding/removing listeners inside other listeners won't cause infinite loop
++        var listeners = this._events[type].slice();
+ 
+-/**
+- * Copy the values from one vec2 to another
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the source vector
+- * @returns {vec2} out
+- */
+-vec2.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    return out;
+-};
++        for (var i = 0; i < listeners.length; i++) {
++            listeners[i].call(this, data);
++        }
+ 
+-/**
+- * Set the components of a vec2 to the given values
+- *
+- * @param {vec2} out the receiving vector
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @returns {vec2} out
+- */
+-vec2.set = function(out, x, y) {
+-    out[0] = x;
+-    out[1] = y;
+-    return out;
+-};
++        return this;
++    },
+ 
+-/**
+- * Adds two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    return out;
++    /**
++     * Check if an event is registered to a type
++     * @param {string} type Event type
++     * @returns {boolean} `true` if there is at least one registered listener for events of type `type`
++     */
++    listens: function(type) {
++        return !!(this._events && this._events[type]);
++    }
+ };
+ 
+-/**
+- * Subtracts vector b from vector a
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    return out;
+-};
++module.exports = Evented;
++
++},{"./util":362}],355:[function(require,module,exports){
++'use strict';
++
++module.exports = Glyphs;
++
++function Glyphs(pbf, end) {
++    this.stacks = pbf.readFields(readFontstacks, [], end);
++}
++
++function readFontstacks(tag, stacks, pbf) {
++    if (tag === 1) {
++        var fontstack = pbf.readMessage(readFontstack, {glyphs: {}});
++        stacks.push(fontstack);
++    }
++}
+ 
+-/**
+- * Alias for {@link vec2.subtract}
+- * @function
+- */
+-vec2.sub = vec2.subtract;
++function readFontstack(tag, fontstack, pbf) {
++    if (tag === 1) fontstack.name = pbf.readString();
++    else if (tag === 2) fontstack.range = pbf.readString();
++    else if (tag === 3) {
++        var glyph = pbf.readMessage(readGlyph, {});
++        fontstack.glyphs[glyph.id] = glyph;
++    }
++}
+ 
+-/**
+- * Multiplies two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.multiply = function(out, a, b) {
+-    out[0] = a[0] * b[0];
+-    out[1] = a[1] * b[1];
+-    return out;
+-};
++function readGlyph(tag, glyph, pbf) {
++    if (tag === 1) glyph.id = pbf.readVarint();
++    else if (tag === 2) glyph.bitmap = pbf.readBytes();
++    else if (tag === 3) glyph.width = pbf.readVarint();
++    else if (tag === 4) glyph.height = pbf.readVarint();
++    else if (tag === 5) glyph.left = pbf.readSVarint();
++    else if (tag === 6) glyph.top = pbf.readSVarint();
++    else if (tag === 7) glyph.advance = pbf.readVarint();
++}
+ 
+-/**
+- * Alias for {@link vec2.multiply}
+- * @function
+- */
+-vec2.mul = vec2.multiply;
++},{}],356:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Divides two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.divide = function(out, a, b) {
+-    out[0] = a[0] / b[0];
+-    out[1] = a[1] / b[1];
+-    return out;
+-};
++module.exports = interpolate;
+ 
+-/**
+- * Alias for {@link vec2.divide}
+- * @function
+- */
+-vec2.div = vec2.divide;
++function interpolate(a, b, t) {
++    return (a * (1 - t)) + (b * t);
++}
+ 
+-/**
+- * Math.ceil the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to ceil
+- * @returns {vec2} out
+- */
+-vec2.ceil = function (out, a) {
+-    out[0] = Math.ceil(a[0]);
+-    out[1] = Math.ceil(a[1]);
+-    return out;
+-};
++interpolate.number = interpolate;
+ 
+-/**
+- * Math.floor the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to floor
+- * @returns {vec2} out
+- */
+-vec2.floor = function (out, a) {
+-    out[0] = Math.floor(a[0]);
+-    out[1] = Math.floor(a[1]);
+-    return out;
++interpolate.vec2 = function(from, to, t) {
++    return [
++        interpolate(from[0], to[0], t),
++        interpolate(from[1], to[1], t)
++    ];
+ };
+ 
+-/**
+- * Returns the minimum of two vec2's
++/*
++ * Interpolate between two colors given as 4-element arrays.
+  *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
++ * @param {Color} from
++ * @param {Color} to
++ * @param {number} t interpolation factor between 0 and 1
++ * @returns {Color} interpolated color
+  */
+-vec2.min = function(out, a, b) {
+-    out[0] = Math.min(a[0], b[0]);
+-    out[1] = Math.min(a[1], b[1]);
+-    return out;
++interpolate.color = function(from, to, t) {
++    return [
++        interpolate(from[0], to[0], t),
++        interpolate(from[1], to[1], t),
++        interpolate(from[2], to[2], t),
++        interpolate(from[3], to[3], t)
++    ];
+ };
+ 
+-/**
+- * Returns the maximum of two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec2} out
+- */
+-vec2.max = function(out, a, b) {
+-    out[0] = Math.max(a[0], b[0]);
+-    out[1] = Math.max(a[1], b[1]);
+-    return out;
++interpolate.array = function(from, to, t) {
++    return from.map(function(d, i) {
++        return interpolate(d, to[i], t);
++    });
+ };
+ 
+-/**
+- * Math.round the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to round
+- * @returns {vec2} out
+- */
+-vec2.round = function (out, a) {
+-    out[0] = Math.round(a[0]);
+-    out[1] = Math.round(a[1]);
+-    return out;
+-};
++},{}],357:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Scales a vec2 by a scalar number
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {vec2} out
+- */
+-vec2.scale = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    return out;
++module.exports = {
++    multiPolygonIntersectsBufferedMultiPoint: multiPolygonIntersectsBufferedMultiPoint,
++    multiPolygonIntersectsMultiPolygon: multiPolygonIntersectsMultiPolygon,
++    multiPolygonIntersectsBufferedMultiLine: multiPolygonIntersectsBufferedMultiLine
+ };
+ 
+-/**
+- * Adds two vec2's after scaling the second operand by a scalar value
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @param {Number} scale the amount to scale b by before adding
+- * @returns {vec2} out
+- */
+-vec2.scaleAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    return out;
+-};
++function multiPolygonIntersectsBufferedMultiPoint(multiPolygon, rings, radius) {
++    for (var j = 0; j < multiPolygon.length; j++) {
++        var polygon = multiPolygon[j];
++        for (var i = 0; i < rings.length; i++) {
++            var ring = rings[i];
++            for (var k = 0; k < ring.length; k++) {
++                var point = ring[k];
++                if (polygonContainsPoint(polygon, point)) return true;
++                if (pointIntersectsBufferedLine(point, polygon, radius)) return true;
++            }
++        }
++    }
++    return false;
++}
+ 
+-/**
+- * Calculates the euclidian distance between two vec2's
+- *
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {Number} distance between a and b
+- */
+-vec2.distance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1];
+-    return Math.sqrt(x*x + y*y);
+-};
++function multiPolygonIntersectsMultiPolygon(multiPolygonA, multiPolygonB) {
+ 
+-/**
+- * Alias for {@link vec2.distance}
+- * @function
+- */
+-vec2.dist = vec2.distance;
++    if (multiPolygonA.length === 1 && multiPolygonA[0].length === 1) {
++        return multiPolygonContainsPoint(multiPolygonB, multiPolygonA[0][0]);
++    }
+ 
+-/**
+- * Calculates the squared euclidian distance between two vec2's
+- *
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {Number} squared distance between a and b
+- */
+-vec2.squaredDistance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1];
+-    return x*x + y*y;
+-};
++    for (var m = 0; m < multiPolygonB.length; m++) {
++        var ring = multiPolygonB[m];
++        for (var n = 0; n < ring.length; n++) {
++            if (multiPolygonContainsPoint(multiPolygonA, ring[n])) return true;
++        }
++    }
+ 
+-/**
+- * Alias for {@link vec2.squaredDistance}
+- * @function
+- */
+-vec2.sqrDist = vec2.squaredDistance;
++    for (var j = 0; j < multiPolygonA.length; j++) {
++        var polygon = multiPolygonA[j];
++        for (var i = 0; i < polygon.length; i++) {
++            if (multiPolygonContainsPoint(multiPolygonB, polygon[i])) return true;
++        }
+ 
+-/**
+- * Calculates the length of a vec2
+- *
+- * @param {vec2} a vector to calculate length of
+- * @returns {Number} length of a
+- */
+-vec2.length = function (a) {
+-    var x = a[0],
+-        y = a[1];
+-    return Math.sqrt(x*x + y*y);
+-};
++        for (var k = 0; k < multiPolygonB.length; k++) {
++            if (lineIntersectsLine(polygon, multiPolygonB[k])) return true;
++        }
++    }
+ 
+-/**
+- * Alias for {@link vec2.length}
+- * @function
+- */
+-vec2.len = vec2.length;
++    return false;
++}
+ 
+-/**
+- * Calculates the squared length of a vec2
+- *
+- * @param {vec2} a vector to calculate squared length of
+- * @returns {Number} squared length of a
+- */
+-vec2.squaredLength = function (a) {
+-    var x = a[0],
+-        y = a[1];
+-    return x*x + y*y;
+-};
++function multiPolygonIntersectsBufferedMultiLine(multiPolygon, multiLine, radius) {
++    for (var i = 0; i < multiLine.length; i++) {
++        var line = multiLine[i];
+ 
+-/**
+- * Alias for {@link vec2.squaredLength}
+- * @function
+- */
+-vec2.sqrLen = vec2.squaredLength;
++        for (var j = 0; j < multiPolygon.length; j++) {
++            var polygon = multiPolygon[j];
+ 
+-/**
+- * Negates the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to negate
+- * @returns {vec2} out
+- */
+-vec2.negate = function(out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    return out;
+-};
++            if (polygon.length >= 3) {
++                for (var k = 0; k < line.length; k++) {
++                    if (polygonContainsPoint(polygon, line[k])) return true;
++                }
++            }
+ 
+-/**
+- * Returns the inverse of the components of a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to invert
+- * @returns {vec2} out
+- */
+-vec2.inverse = function(out, a) {
+-  out[0] = 1.0 / a[0];
+-  out[1] = 1.0 / a[1];
+-  return out;
+-};
++            if (lineIntersectsBufferedLine(polygon, line, radius)) return true;
++        }
++    }
++    return false;
++}
+ 
+-/**
+- * Normalize a vec2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a vector to normalize
+- * @returns {vec2} out
+- */
+-vec2.normalize = function(out, a) {
+-    var x = a[0],
+-        y = a[1];
+-    var len = x*x + y*y;
+-    if (len > 0) {
+-        //TODO: evaluate use of glm_invsqrt here?
+-        len = 1 / Math.sqrt(len);
+-        out[0] = a[0] * len;
+-        out[1] = a[1] * len;
++function lineIntersectsBufferedLine(lineA, lineB, radius) {
++
++    if (lineA.length > 1) {
++        if (lineIntersectsLine(lineA, lineB)) return true;
++
++        // Check whether any point in either line is within radius of the other line
++        for (var j = 0; j < lineB.length; j++) {
++            if (pointIntersectsBufferedLine(lineB[j], lineA, radius)) return true;
++        }
+     }
+-    return out;
+-};
+ 
+-/**
+- * Calculates the dot product of two vec2's
+- *
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-vec2.dot = function (a, b) {
+-    return a[0] * b[0] + a[1] * b[1];
+-};
++    for (var k = 0; k < lineA.length; k++) {
++        if (pointIntersectsBufferedLine(lineA[k], lineB, radius)) return true;
++    }
+ 
+-/**
+- * Computes the cross product of two vec2's
+- * Note that the cross product must by definition produce a 3D vector
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @returns {vec3} out
+- */
+-vec2.cross = function(out, a, b) {
+-    var z = a[0] * b[1] - a[1] * b[0];
+-    out[0] = out[1] = 0;
+-    out[2] = z;
+-    return out;
+-};
++    return false;
++}
+ 
+-/**
+- * Performs a linear interpolation between two vec2's
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the first operand
+- * @param {vec2} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec2} out
+- */
+-vec2.lerp = function (out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1];
+-    out[0] = ax + t * (b[0] - ax);
+-    out[1] = ay + t * (b[1] - ay);
+-    return out;
+-};
++function lineIntersectsLine(lineA, lineB) {
++    for (var i = 0; i < lineA.length - 1; i++) {
++        var a0 = lineA[i];
++        var a1 = lineA[i + 1];
++        for (var j = 0; j < lineB.length - 1; j++) {
++            var b0 = lineB[j];
++            var b1 = lineB[j + 1];
++            if (lineSegmentIntersectsLineSegment(a0, a1, b0, b1)) return true;
++        }
++    }
++    return false;
++}
+ 
+-/**
+- * Generates a random vector with the given scale
+- *
+- * @param {vec2} out the receiving vector
+- * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+- * @returns {vec2} out
+- */
+-vec2.random = function (out, scale) {
+-    scale = scale || 1.0;
+-    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
+-    out[0] = Math.cos(r) * scale;
+-    out[1] = Math.sin(r) * scale;
+-    return out;
+-};
+ 
+-/**
+- * Transforms the vec2 with a mat2
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat2} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat2 = function(out, a, m) {
+-    var x = a[0],
+-        y = a[1];
+-    out[0] = m[0] * x + m[2] * y;
+-    out[1] = m[1] * x + m[3] * y;
+-    return out;
+-};
++// http://bryceboe.com/2006/10/23/line-segment-intersection-algorithm/
++function isCounterClockwise(a, b, c) {
++    return (c.y - a.y) * (b.x - a.x) > (b.y - a.y) * (c.x - a.x);
++}
+ 
+-/**
+- * Transforms the vec2 with a mat2d
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat2d} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat2d = function(out, a, m) {
+-    var x = a[0],
+-        y = a[1];
+-    out[0] = m[0] * x + m[2] * y + m[4];
+-    out[1] = m[1] * x + m[3] * y + m[5];
+-    return out;
+-};
++function lineSegmentIntersectsLineSegment(a0, a1, b0, b1) {
++    return isCounterClockwise(a0, b0, b1) !== isCounterClockwise(a1, b0, b1) &&
++        isCounterClockwise(a0, a1, b0) !== isCounterClockwise(a0, a1, b1);
++}
+ 
+-/**
+- * Transforms the vec2 with a mat3
+- * 3rd vector component is implicitly '1'
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat3} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat3 = function(out, a, m) {
+-    var x = a[0],
+-        y = a[1];
+-    out[0] = m[0] * x + m[3] * y + m[6];
+-    out[1] = m[1] * x + m[4] * y + m[7];
+-    return out;
+-};
++function pointIntersectsBufferedLine(p, line, radius) {
++    var radiusSquared = radius * radius;
+ 
+-/**
+- * Transforms the vec2 with a mat4
+- * 3rd vector component is implicitly '0'
+- * 4th vector component is implicitly '1'
+- *
+- * @param {vec2} out the receiving vector
+- * @param {vec2} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec2} out
+- */
+-vec2.transformMat4 = function(out, a, m) {
+-    var x = a[0], 
+-        y = a[1];
+-    out[0] = m[0] * x + m[4] * y + m[12];
+-    out[1] = m[1] * x + m[5] * y + m[13];
+-    return out;
+-};
++    if (line.length === 1) return p.distSqr(line[0]) < radiusSquared;
++
++    for (var i = 1; i < line.length; i++) {
++        // Find line segments that have a distance <= radius^2 to p
++        // In that case, we treat the line as "containing point p".
++        var v = line[i - 1], w = line[i];
++        if (distToSegmentSquared(p, v, w) < radiusSquared) return true;
++    }
++    return false;
++}
++
++// Code from http://stackoverflow.com/a/1501725/331379.
++function distToSegmentSquared(p, v, w) {
++    var l2 = v.distSqr(w);
++    if (l2 === 0) return p.distSqr(v);
++    var t = ((p.x - v.x) * (w.x - v.x) + (p.y - v.y) * (w.y - v.y)) / l2;
++    if (t < 0) return p.distSqr(v);
++    if (t > 1) return p.distSqr(w);
++    return p.distSqr(w.sub(v)._mult(t)._add(v));
++}
+ 
+-/**
+- * Perform some operation over an array of vec2s.
+- *
+- * @param {Array} a the array of vectors to iterate over
+- * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed
+- * @param {Number} offset Number of elements to skip at the beginning of the array
+- * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
+- * @param {Function} fn Function to call for each vector in the array
+- * @param {Object} [arg] additional argument to pass to fn
+- * @returns {Array} a
+- * @function
+- */
+-vec2.forEach = (function() {
+-    var vec = vec2.create();
++// point in polygon ray casting algorithm
++function multiPolygonContainsPoint(rings, p) {
++    var c = false,
++        ring, p1, p2;
+ 
+-    return function(a, stride, offset, count, fn, arg) {
+-        var i, l;
+-        if(!stride) {
+-            stride = 2;
++    for (var k = 0; k < rings.length; k++) {
++        ring = rings[k];
++        for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
++            p1 = ring[i];
++            p2 = ring[j];
++            if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
++                c = !c;
++            }
+         }
++    }
++    return c;
++}
+ 
+-        if(!offset) {
+-            offset = 0;
+-        }
+-        
+-        if(count) {
+-            l = Math.min((count * stride) + offset, a.length);
+-        } else {
+-            l = a.length;
++function polygonContainsPoint(ring, p) {
++    var c = false;
++    for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
++        var p1 = ring[i];
++        var p2 = ring[j];
++        if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
++            c = !c;
+         }
++    }
++    return c;
++}
+ 
+-        for(i = offset; i < l; i += stride) {
+-            vec[0] = a[i]; vec[1] = a[i+1];
+-            fn(vec, vec, arg);
+-            a[i] = vec[0]; a[i+1] = vec[1];
+-        }
+-        
+-        return a;
+-    };
+-})();
++},{}],358:[function(require,module,exports){
++'use strict';
++
++module.exports = LRUCache;
+ 
+ /**
+- * Returns a string representation of a vector
++ * A [least-recently-used cache](http://en.wikipedia.org/wiki/Cache_algorithms)
++ * with hash lookup made possible by keeping a list of keys in parallel to
++ * an array of dictionary of values
+  *
+- * @param {vec2} vec vector to represent as a string
+- * @returns {String} string representation of the vector
++ * @param {number} max number of permitted values
++ * @param {Function} onRemove callback called with items when they expire
++ * @private
+  */
+-vec2.str = function (a) {
+-    return 'vec2(' + a[0] + ', ' + a[1] + ')';
+-};
++function LRUCache(max, onRemove) {
++    this.max = max;
++    this.onRemove = onRemove;
++    this.reset();
++}
+ 
+ /**
+- * Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)
++ * Clear the cache
+  *
+- * @param {vec2} a The first vector.
+- * @param {vec2} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * @returns {LRUCache} this cache
++ * @private
+  */
+-vec2.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1];
++LRUCache.prototype.reset = function() {
++    for (var key in this.data) {
++        this.onRemove(this.data[key]);
++    }
++
++    this.data = {};
++    this.order = [];
++
++    return this;
+ };
+ 
+ /**
+- * Returns whether or not the vectors have approximately the same elements in the same position.
++ * Add a key, value combination to the cache, trimming its size if this pushes
++ * it over max length.
+  *
+- * @param {vec2} a The first vector.
+- * @param {vec2} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * @param {string} key lookup key for the item
++ * @param {*} data any value
++ *
++ * @returns {LRUCache} this cache
++ * @private
+  */
+-vec2.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1];
+-    var b0 = b[0], b1 = b[1];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)));
+-};
+-
+-module.exports = vec2;
+-
+-},{"./common.js":364}],371:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+-
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
+-
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
++LRUCache.prototype.add = function(key, data) {
+ 
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++    if (this.has(key)) {
++        this.order.splice(this.order.indexOf(key), 1);
++        this.data[key] = data;
++        this.order.push(key);
+ 
+-var glMatrix = require("./common.js");
++    } else {
++        this.data[key] = data;
++        this.order.push(key);
+ 
+-/**
+- * @class 3 Dimensional Vector
+- * @name vec3
+- */
+-var vec3 = {};
++        if (this.order.length > this.max) {
++            var removedData = this.get(this.order[0]);
++            if (removedData) this.onRemove(removedData);
++        }
++    }
+ 
+-/**
+- * Creates a new, empty vec3
+- *
+- * @returns {vec3} a new 3D vector
+- */
+-vec3.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(3);
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    return out;
++    return this;
+ };
+ 
+ /**
+- * Creates a new vec3 initialized with values from an existing vector
++ * Determine whether the value attached to `key` is present
+  *
+- * @param {vec3} a vector to clone
+- * @returns {vec3} a new 3D vector
++ * @param {string} key the key to be looked-up
++ * @returns {boolean} whether the cache has this value
++ * @private
+  */
+-vec3.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(3);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    return out;
++LRUCache.prototype.has = function(key) {
++    return key in this.data;
+ };
+ 
+ /**
+- * Creates a new vec3 initialized with the given values
++ * List all keys in the cache
+  *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @returns {vec3} a new 3D vector
++ * @returns {Array<string>} an array of keys in this cache.
++ * @private
+  */
+-vec3.fromValues = function(x, y, z) {
+-    var out = new glMatrix.ARRAY_TYPE(3);
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    return out;
++LRUCache.prototype.keys = function() {
++    return this.order;
+ };
+ 
+ /**
+- * Copy the values from one vec3 to another
++ * Get the value attached to a specific key. If the key is not found,
++ * returns `null`
+  *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the source vector
+- * @returns {vec3} out
++ * @param {string} key the key to look up
++ * @returns {*} the data, or null if it isn't found
++ * @private
+  */
+-vec3.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    return out;
+-};
++LRUCache.prototype.get = function(key) {
++    if (!this.has(key)) { return null; }
+ 
+-/**
+- * Set the components of a vec3 to the given values
+- *
+- * @param {vec3} out the receiving vector
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @returns {vec3} out
+- */
+-vec3.set = function(out, x, y, z) {
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    return out;
+-};
++    var data = this.data[key];
+ 
+-/**
+- * Adds two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    return out;
++    delete this.data[key];
++    this.order.splice(this.order.indexOf(key), 1);
++
++    return data;
+ };
+ 
+ /**
+- * Subtracts vector b from vector a
++ * Change the max size of the cache.
+  *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
++ * @param {number} max the max size of the cache
++ * @returns {LRUCache} this cache
++ * @private
+  */
+-vec3.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    return out;
+-};
++LRUCache.prototype.setMaxSize = function(max) {
++    this.max = max;
+ 
+-/**
+- * Alias for {@link vec3.subtract}
+- * @function
+- */
+-vec3.sub = vec3.subtract;
++    while (this.order.length > this.max) {
++        var removedData = this.get(this.order[0]);
++        if (removedData) this.onRemove(removedData);
++    }
+ 
+-/**
+- * Multiplies two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.multiply = function(out, a, b) {
+-    out[0] = a[0] * b[0];
+-    out[1] = a[1] * b[1];
+-    out[2] = a[2] * b[2];
+-    return out;
++    return this;
+ };
+ 
+-/**
+- * Alias for {@link vec3.multiply}
+- * @function
+- */
+-vec3.mul = vec3.multiply;
++},{}],359:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Divides two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.divide = function(out, a, b) {
+-    out[0] = a[0] / b[0];
+-    out[1] = a[1] / b[1];
+-    out[2] = a[2] / b[2];
+-    return out;
+-};
++var config = require('./config');
++var browser = require('./browser');
+ 
+-/**
+- * Alias for {@link vec3.divide}
+- * @function
+- */
+-vec3.div = vec3.divide;
++function normalizeURL(url, pathPrefix, accessToken) {
++    accessToken = accessToken || config.ACCESS_TOKEN;
+ 
+-/**
+- * Math.ceil the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to ceil
+- * @returns {vec3} out
+- */
+-vec3.ceil = function (out, a) {
+-    out[0] = Math.ceil(a[0]);
+-    out[1] = Math.ceil(a[1]);
+-    out[2] = Math.ceil(a[2]);
+-    return out;
+-};
++    if (!accessToken && config.REQUIRE_ACCESS_TOKEN) {
++        throw new Error('An API access token is required to use Mapbox GL. ' +
++            'See https://www.mapbox.com/developers/api/#access-tokens');
++    }
+ 
+-/**
+- * Math.floor the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to floor
+- * @returns {vec3} out
+- */
+-vec3.floor = function (out, a) {
+-    out[0] = Math.floor(a[0]);
+-    out[1] = Math.floor(a[1]);
+-    out[2] = Math.floor(a[2]);
+-    return out;
+-};
++    url = url.replace(/^mapbox:\/\//, config.API_URL + pathPrefix);
++    url += url.indexOf('?') !== -1 ? '&access_token=' : '?access_token=';
+ 
+-/**
+- * Returns the minimum of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.min = function(out, a, b) {
+-    out[0] = Math.min(a[0], b[0]);
+-    out[1] = Math.min(a[1], b[1]);
+-    out[2] = Math.min(a[2], b[2]);
+-    return out;
+-};
++    if (config.REQUIRE_ACCESS_TOKEN) {
++        if (accessToken[0] === 's') {
++            throw new Error('Use a public access token (pk.*) with Mapbox GL JS, not a secret access token (sk.*). ' +
++                'See https://www.mapbox.com/developers/api/#access-tokens');
++        }
+ 
+-/**
+- * Returns the maximum of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.max = function(out, a, b) {
+-    out[0] = Math.max(a[0], b[0]);
+-    out[1] = Math.max(a[1], b[1]);
+-    out[2] = Math.max(a[2], b[2]);
+-    return out;
++        url += accessToken;
++    }
++
++    return url;
++}
++
++module.exports.normalizeStyleURL = function(url, accessToken) {
++    if (!url.match(/^mapbox:\/\/styles\//))
++        return url;
++
++    var split = url.split('/');
++    var user = split[3];
++    var style = split[4];
++    var draft = split[5] ? '/draft' : '';
++    return normalizeURL('mapbox://' + user + '/' + style + draft, '/styles/v1/', accessToken);
+ };
+ 
+-/**
+- * Math.round the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to round
+- * @returns {vec3} out
+- */
+-vec3.round = function (out, a) {
+-    out[0] = Math.round(a[0]);
+-    out[1] = Math.round(a[1]);
+-    out[2] = Math.round(a[2]);
+-    return out;
++module.exports.normalizeSourceURL = function(url, accessToken) {
++    if (!url.match(/^mapbox:\/\//))
++        return url;
++
++    // TileJSON requests need a secure flag appended to their URLs so
++    // that the server knows to send SSL-ified resource references.
++    return normalizeURL(url + '.json', '/v4/', accessToken) + '&secure';
+ };
+ 
+-/**
+- * Scales a vec3 by a scalar number
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {vec3} out
+- */
+-vec3.scale = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    return out;
++module.exports.normalizeGlyphsURL = function(url, accessToken) {
++    if (!url.match(/^mapbox:\/\//))
++        return url;
++
++    var user = url.split('/')[3];
++    return normalizeURL('mapbox://' + user + '/{fontstack}/{range}.pbf', '/fonts/v1/', accessToken);
+ };
+ 
+-/**
+- * Adds two vec3's after scaling the second operand by a scalar value
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {Number} scale the amount to scale b by before adding
+- * @returns {vec3} out
+- */
+-vec3.scaleAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    return out;
++module.exports.normalizeSpriteURL = function(url, format, ext, accessToken) {
++    if (!url.match(/^mapbox:\/\/sprites\//))
++        return url + format + ext;
++
++    var split = url.split('/');
++    var user = split[3];
++    var style = split[4];
++    var draft = split[5] ? '/draft' : '';
++    return normalizeURL('mapbox://' + user + '/' + style + draft + '/sprite' + format + ext, '/styles/v1/', accessToken);
+ };
+ 
+-/**
+- * Calculates the euclidian distance between two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} distance between a and b
+- */
+-vec3.distance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2];
+-    return Math.sqrt(x*x + y*y + z*z);
++module.exports.normalizeTileURL = function(url, sourceUrl, tileSize) {
++    if (!sourceUrl || !sourceUrl.match(/^mapbox:\/\//))
++        return url;
++
++    // The v4 mapbox tile API supports 512x512 image tiles only when @2x
++    // is appended to the tile URL. If `tileSize: 512` is specified for
++    // a Mapbox raster source force the @2x suffix even if a non hidpi
++    // device.
++    url = url.replace(/([?&]access_token=)tk\.[^&]+/, '$1' + config.ACCESS_TOKEN);
++    var extension = browser.supportsWebp ? 'webp' : '$1';
++    return url.replace(/\.((?:png|jpg)\d*)(?=$|\?)/, browser.devicePixelRatio >= 2 || tileSize === 512 ? '@2x.' + extension : '.' + extension);
+ };
+ 
+-/**
+- * Alias for {@link vec3.distance}
+- * @function
+- */
+-vec3.dist = vec3.distance;
++},{"./browser":348,"./config":352}],360:[function(require,module,exports){
++'use strict';
+ 
+-/**
+- * Calculates the squared euclidian distance between two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} squared distance between a and b
+- */
+-vec3.squaredDistance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2];
+-    return x*x + y*y + z*z;
++// Note: all "sizes" are measured in bytes
++
++var assert = require('assert');
++
++module.exports = StructArrayType;
++
++var viewTypes = {
++    'Int8': Int8Array,
++    'Uint8': Uint8Array,
++    'Uint8Clamped': Uint8ClampedArray,
++    'Int16': Int16Array,
++    'Uint16': Uint16Array,
++    'Int32': Int32Array,
++    'Uint32': Uint32Array,
++    'Float32': Float32Array,
++    'Float64': Float64Array
+ };
+ 
+ /**
+- * Alias for {@link vec3.squaredDistance}
+- * @function
++ * @typedef StructMember
++ * @private
++ * @property {string} name
++ * @property {string} type
++ * @property {number} components
+  */
+-vec3.sqrDist = vec3.squaredDistance;
++
++var structArrayTypeCache = {};
+ 
+ /**
+- * Calculates the length of a vec3
++ * `StructArrayType` is used to create new `StructArray` types.
+  *
+- * @param {vec3} a vector to calculate length of
+- * @returns {Number} length of a
++ * `StructArray` provides an abstraction over `ArrayBuffer` and `TypedArray` making it behave like
++ * an array of typed structs. A StructArray is comprised of elements. Each element has a set of
++ * members that are defined when the `StructArrayType` is created.
++ *
++ * StructArrays useful for creating large arrays that:
++ * - can be transferred from workers as a Transferable object
++ * - can be copied cheaply
++ * - use less memory for lower-precision members
++ * - can be used as buffers in WebGL.
++ *
++ * @class StructArrayType
++ * @param {Array.<StructMember>}
++ * @param options
++ * @param {number} options.alignment Use `4` to align members to 4 byte boundaries. Default is 1.
++ *
++ * @example
++ *
++ * var PointArrayType = new StructArrayType({
++ *  members: [
++ *      { type: 'Int16', name: 'x' },
++ *      { type: 'Int16', name: 'y' }
++ *  ]});
++ *
++ *  var pointArray = new PointArrayType();
++ *  pointArray.emplaceBack(10, 15);
++ *  pointArray.emplaceBack(20, 35);
++ *
++ *  point = pointArray.get(0);
++ *  assert(point.x === 10);
++ *  assert(point.y === 15);
++ *
++ * @private
+  */
+-vec3.length = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2];
+-    return Math.sqrt(x*x + y*y + z*z);
+-};
++function StructArrayType(options) {
+ 
+-/**
+- * Alias for {@link vec3.length}
+- * @function
+- */
+-vec3.len = vec3.length;
++    var key = JSON.stringify(options);
++    if (structArrayTypeCache[key]) {
++        return structArrayTypeCache[key];
++    }
+ 
+-/**
+- * Calculates the squared length of a vec3
+- *
+- * @param {vec3} a vector to calculate squared length of
+- * @returns {Number} squared length of a
+- */
+-vec3.squaredLength = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2];
+-    return x*x + y*y + z*z;
+-};
++    if (options.alignment === undefined) options.alignment = 1;
+ 
+-/**
+- * Alias for {@link vec3.squaredLength}
+- * @function
+- */
+-vec3.sqrLen = vec3.squaredLength;
++    function StructType() {
++        Struct.apply(this, arguments);
++    }
+ 
+-/**
+- * Negates the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to negate
+- * @returns {vec3} out
+- */
+-vec3.negate = function(out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    return out;
+-};
++    StructType.prototype = Object.create(Struct.prototype);
+ 
+-/**
+- * Returns the inverse of the components of a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to invert
+- * @returns {vec3} out
+- */
+-vec3.inverse = function(out, a) {
+-  out[0] = 1.0 / a[0];
+-  out[1] = 1.0 / a[1];
+-  out[2] = 1.0 / a[2];
+-  return out;
+-};
++    var offset = 0;
++    var maxSize = 0;
++    var usedTypes = ['Uint8'];
+ 
+-/**
+- * Normalize a vec3
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a vector to normalize
+- * @returns {vec3} out
+- */
+-vec3.normalize = function(out, a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2];
+-    var len = x*x + y*y + z*z;
+-    if (len > 0) {
+-        //TODO: evaluate use of glm_invsqrt here?
+-        len = 1 / Math.sqrt(len);
+-        out[0] = a[0] * len;
+-        out[1] = a[1] * len;
+-        out[2] = a[2] * len;
++    StructType.prototype.members = options.members.map(function(member) {
++        member = {
++            name: member.name,
++            type: member.type,
++            components: member.components || 1
++        };
++
++        assert(member.name.length);
++        assert(member.type in viewTypes);
++
++        if (usedTypes.indexOf(member.type) < 0) usedTypes.push(member.type);
++
++        var typeSize = sizeOf(member.type);
++        maxSize = Math.max(maxSize, typeSize);
++        member.offset = offset = align(offset, Math.max(options.alignment, typeSize));
++
++        for (var c = 0; c < member.components; c++) {
++            Object.defineProperty(StructType.prototype, member.name + (member.components === 1 ? '' : c), {
++                get: createGetter(member, c),
++                set: createSetter(member, c)
++            });
++        }
++
++        offset += typeSize * member.components;
++
++        return member;
++    });
++
++    StructType.prototype.alignment = options.alignment;
++    StructType.prototype.size = align(offset, Math.max(maxSize, options.alignment));
++
++    function StructArrayType() {
++        StructArray.apply(this, arguments);
++        this.members = StructType.prototype.members;
+     }
+-    return out;
+-};
+ 
+-/**
+- * Calculates the dot product of two vec3's
+- *
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-vec3.dot = function (a, b) {
+-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+-};
++    StructArrayType.serialize = serializeStructArrayType;
+ 
+-/**
+- * Computes the cross product of two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @returns {vec3} out
+- */
+-vec3.cross = function(out, a, b) {
+-    var ax = a[0], ay = a[1], az = a[2],
+-        bx = b[0], by = b[1], bz = b[2];
++    StructArrayType.prototype = Object.create(StructArray.prototype);
++    StructArrayType.prototype.StructType = StructType;
++    StructArrayType.prototype.bytesPerElement = StructType.prototype.size;
++    StructArrayType.prototype.emplaceBack = createEmplaceBack(StructType.prototype.members, StructType.prototype.size);
++    StructArrayType.prototype._usedTypes = usedTypes;
+ 
+-    out[0] = ay * bz - az * by;
+-    out[1] = az * bx - ax * bz;
+-    out[2] = ax * by - ay * bx;
+-    return out;
+-};
+ 
+-/**
+- * Performs a linear interpolation between two vec3's
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
+- */
+-vec3.lerp = function (out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1],
+-        az = a[2];
+-    out[0] = ax + t * (b[0] - ax);
+-    out[1] = ay + t * (b[1] - ay);
+-    out[2] = az + t * (b[2] - az);
+-    return out;
+-};
++    structArrayTypeCache[key] = StructArrayType;
+ 
+-/**
+- * Performs a hermite interpolation with two control points
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {vec3} c the third operand
+- * @param {vec3} d the fourth operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
+- */
+-vec3.hermite = function (out, a, b, c, d, t) {
+-  var factorTimes2 = t * t,
+-      factor1 = factorTimes2 * (2 * t - 3) + 1,
+-      factor2 = factorTimes2 * (t - 2) + t,
+-      factor3 = factorTimes2 * (t - 1),
+-      factor4 = factorTimes2 * (3 - 2 * t);
+-  
+-  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
+-  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
+-  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
+-  
+-  return out;
+-};
++    return StructArrayType;
++}
+ 
+ /**
+- * Performs a bezier interpolation with two control points
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the first operand
+- * @param {vec3} b the second operand
+- * @param {vec3} c the third operand
+- * @param {vec3} d the fourth operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec3} out
++ * Serialize the StructArray type. This serializes the *type* not an instance of the type.
++ * @private
+  */
+-vec3.bezier = function (out, a, b, c, d, t) {
+-  var inverseFactor = 1 - t,
+-      inverseFactorTimesTwo = inverseFactor * inverseFactor,
+-      factorTimes2 = t * t,
+-      factor1 = inverseFactorTimesTwo * inverseFactor,
+-      factor2 = 3 * t * inverseFactorTimesTwo,
+-      factor3 = 3 * factorTimes2 * inverseFactor,
+-      factor4 = factorTimes2 * t;
+-  
+-  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
+-  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
+-  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
+-  
+-  return out;
+-};
++function serializeStructArrayType() {
++    return {
++        members: this.prototype.StructType.prototype.members,
++        alignment: this.prototype.StructType.prototype.alignment,
++        bytesPerElement: this.prototype.bytesPerElement
++    };
++}
+ 
+-/**
+- * Generates a random vector with the given scale
+- *
+- * @param {vec3} out the receiving vector
+- * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+- * @returns {vec3} out
+- */
+-vec3.random = function (out, scale) {
+-    scale = scale || 1.0;
+ 
+-    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
+-    var z = (glMatrix.RANDOM() * 2.0) - 1.0;
+-    var zScale = Math.sqrt(1.0-z*z) * scale;
++function align(offset, size) {
++    return Math.ceil(offset / size) * size;
++}
+ 
+-    out[0] = Math.cos(r) * zScale;
+-    out[1] = Math.sin(r) * zScale;
+-    out[2] = z * scale;
+-    return out;
+-};
++function sizeOf(type) {
++    return viewTypes[type].BYTES_PER_ELEMENT;
++}
+ 
+-/**
+- * Transforms the vec3 with a mat4.
+- * 4th vector component is implicitly '1'
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec3} out
+- */
+-vec3.transformMat4 = function(out, a, m) {
+-    var x = a[0], y = a[1], z = a[2],
+-        w = m[3] * x + m[7] * y + m[11] * z + m[15];
+-    w = w || 1.0;
+-    out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w;
+-    out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w;
+-    out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w;
+-    return out;
+-};
++function getArrayViewName(type) {
++    return type.toLowerCase();
++}
+ 
+-/**
+- * Transforms the vec3 with a mat3.
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to transform
+- * @param {mat4} m the 3x3 matrix to transform with
+- * @returns {vec3} out
+- */
+-vec3.transformMat3 = function(out, a, m) {
+-    var x = a[0], y = a[1], z = a[2];
+-    out[0] = x * m[0] + y * m[3] + z * m[6];
+-    out[1] = x * m[1] + y * m[4] + z * m[7];
+-    out[2] = x * m[2] + y * m[5] + z * m[8];
+-    return out;
+-};
+ 
+-/**
+- * Transforms the vec3 with a quat
+- *
+- * @param {vec3} out the receiving vector
+- * @param {vec3} a the vector to transform
+- * @param {quat} q quaternion to transform with
+- * @returns {vec3} out
++/*
++ * > I saw major perf gains by shortening the source of these generated methods (i.e. renaming
++ * > elementIndex to i) (likely due to v8 inlining heuristics).
++ * - lucaswoj
+  */
+-vec3.transformQuat = function(out, a, q) {
+-    // benchmarks: http://jsperf.com/quaternion-transform-vec3-implementations
++function createEmplaceBack(members, bytesPerElement) {
++    var usedTypeSizes = [];
++    var argNames = [];
++    var body = '' +
++    'var i = this.length;\n' +
++    'this.resize(this.length + 1);\n';
+ 
+-    var x = a[0], y = a[1], z = a[2],
+-        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
++    for (var m = 0; m < members.length; m++) {
++        var member = members[m];
++        var size = sizeOf(member.type);
+ 
+-        // calculate quat * vec
+-        ix = qw * x + qy * z - qz * y,
+-        iy = qw * y + qz * x - qx * z,
+-        iz = qw * z + qx * y - qy * x,
+-        iw = -qx * x - qy * y - qz * z;
++        if (usedTypeSizes.indexOf(size) < 0) {
++            usedTypeSizes.push(size);
++            body += 'var o' + size.toFixed(0) + ' = i * ' + (bytesPerElement / size).toFixed(0) + ';\n';
++        }
+ 
+-    // calculate result * inverse quat
+-    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+-    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+-    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+-    return out;
+-};
++        for (var c = 0; c < member.components; c++) {
++            var argName = 'v' + argNames.length;
++            var index = 'o' + size.toFixed(0) + ' + ' + (member.offset / size + c).toFixed(0);
++            body += 'this.' + getArrayViewName(member.type) + '[' + index + '] = ' + argName + ';\n';
++            argNames.push(argName);
++        }
++    }
+ 
+-/**
+- * Rotate a 3D vector around the x-axis
+- * @param {vec3} out The receiving vec3
+- * @param {vec3} a The vec3 point to rotate
+- * @param {vec3} b The origin of the rotation
+- * @param {Number} c The angle of rotation
+- * @returns {vec3} out
+- */
+-vec3.rotateX = function(out, a, b, c){
+-   var p = [], r=[];
+-	  //Translate point to the origin
+-	  p[0] = a[0] - b[0];
+-	  p[1] = a[1] - b[1];
+-  	p[2] = a[2] - b[2];
++    body += 'return i;';
+ 
+-	  //perform rotation
+-	  r[0] = p[0];
+-	  r[1] = p[1]*Math.cos(c) - p[2]*Math.sin(c);
+-	  r[2] = p[1]*Math.sin(c) + p[2]*Math.cos(c);
++    return new Function(argNames, body);
++}
+ 
+-	  //translate to correct position
+-	  out[0] = r[0] + b[0];
+-	  out[1] = r[1] + b[1];
+-	  out[2] = r[2] + b[2];
++function createMemberComponentString(member, component) {
++    var elementOffset = 'this._pos' + sizeOf(member.type).toFixed(0);
++    var componentOffset = (member.offset / sizeOf(member.type) + component).toFixed(0);
++    var index = elementOffset + ' + ' + componentOffset;
++    return 'this._structArray.' + getArrayViewName(member.type) + '[' + index + ']';
+ 
+-  	return out;
+-};
++}
++
++function createGetter(member, c) {
++    return new Function([], 'return ' + createMemberComponentString(member, c) + ';');
++}
++
++function createSetter(member, c) {
++    return new Function(['x'], createMemberComponentString(member, c) + ' = x;');
++}
+ 
+ /**
+- * Rotate a 3D vector around the y-axis
+- * @param {vec3} out The receiving vec3
+- * @param {vec3} a The vec3 point to rotate
+- * @param {vec3} b The origin of the rotation
+- * @param {Number} c The angle of rotation
+- * @returns {vec3} out
++ * @class Struct
++ * @param {StructArray} structArray The StructArray the struct is stored in
++ * @param {number} index The index of the struct in the StructArray.
++ * @private
+  */
+-vec3.rotateY = function(out, a, b, c){
+-  	var p = [], r=[];
+-  	//Translate point to the origin
+-  	p[0] = a[0] - b[0];
+-  	p[1] = a[1] - b[1];
+-  	p[2] = a[2] - b[2];
+-  
+-  	//perform rotation
+-  	r[0] = p[2]*Math.sin(c) + p[0]*Math.cos(c);
+-  	r[1] = p[1];
+-  	r[2] = p[2]*Math.cos(c) - p[0]*Math.sin(c);
+-  
+-  	//translate to correct position
+-  	out[0] = r[0] + b[0];
+-  	out[1] = r[1] + b[1];
+-  	out[2] = r[2] + b[2];
+-  
+-  	return out;
+-};
++function Struct(structArray, index) {
++    this._structArray = structArray;
++    this._pos1 = index * this.size;
++    this._pos2 = this._pos1 / 2;
++    this._pos4 = this._pos1 / 4;
++    this._pos8 = this._pos1 / 8;
++}
+ 
+ /**
+- * Rotate a 3D vector around the z-axis
+- * @param {vec3} out The receiving vec3
+- * @param {vec3} a The vec3 point to rotate
+- * @param {vec3} b The origin of the rotation
+- * @param {Number} c The angle of rotation
+- * @returns {vec3} out
++ * @class StructArray
++ * The StructArray class is inherited by the custom StructArrayType classes created with
++ * `new StructArrayType(members, options)`.
++ * @private
+  */
+-vec3.rotateZ = function(out, a, b, c){
+-  	var p = [], r=[];
+-  	//Translate point to the origin
+-  	p[0] = a[0] - b[0];
+-  	p[1] = a[1] - b[1];
+-  	p[2] = a[2] - b[2];
+-  
+-  	//perform rotation
+-  	r[0] = p[0]*Math.cos(c) - p[1]*Math.sin(c);
+-  	r[1] = p[0]*Math.sin(c) + p[1]*Math.cos(c);
+-  	r[2] = p[2];
+-  
+-  	//translate to correct position
+-  	out[0] = r[0] + b[0];
+-  	out[1] = r[1] + b[1];
+-  	out[2] = r[2] + b[2];
+-  
+-  	return out;
+-};
++function StructArray(serialized) {
++    if (serialized !== undefined) {
++    // Create from an serialized StructArray
++        this.arrayBuffer = serialized.arrayBuffer;
++        this.length = serialized.length;
++        this.capacity = this.arrayBuffer.byteLength / this.bytesPerElement;
++        this._refreshViews();
++
++    // Create a new StructArray
++    } else {
++        this.capacity = -1;
++        this.resize(0);
++    }
++}
++
++/**
++ * @property {number}
++ * @private
++ * @readonly
++ */
++StructArray.prototype.DEFAULT_CAPACITY = 128;
+ 
+ /**
+- * Perform some operation over an array of vec3s.
+- *
+- * @param {Array} a the array of vectors to iterate over
+- * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed
+- * @param {Number} offset Number of elements to skip at the beginning of the array
+- * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array
+- * @param {Function} fn Function to call for each vector in the array
+- * @param {Object} [arg] additional argument to pass to fn
+- * @returns {Array} a
+- * @function
++ * @property {number}
++ * @private
++ * @readonly
+  */
+-vec3.forEach = (function() {
+-    var vec = vec3.create();
+-
+-    return function(a, stride, offset, count, fn, arg) {
+-        var i, l;
+-        if(!stride) {
+-            stride = 3;
+-        }
+-
+-        if(!offset) {
+-            offset = 0;
+-        }
+-        
+-        if(count) {
+-            l = Math.min((count * stride) + offset, a.length);
+-        } else {
+-            l = a.length;
+-        }
++StructArray.prototype.RESIZE_MULTIPLIER = 5;
+ 
+-        for(i = offset; i < l; i += stride) {
+-            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2];
+-            fn(vec, vec, arg);
+-            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2];
+-        }
+-        
+-        return a;
++/**
++ * Serialize this StructArray instance
++ * @private
++ */
++StructArray.prototype.serialize = function() {
++    this.trim();
++    return {
++        length: this.length,
++        arrayBuffer: this.arrayBuffer
+     };
+-})();
++};
+ 
+ /**
+- * Get the angle between two 3D vectors
+- * @param {vec3} a The first operand
+- * @param {vec3} b The second operand
+- * @returns {Number} The angle in radians
++ * Return the Struct at the given location in the array.
++ * @private
++ * @param {number} index The index of the element.
+  */
+-vec3.angle = function(a, b) {
+-   
+-    var tempA = vec3.fromValues(a[0], a[1], a[2]);
+-    var tempB = vec3.fromValues(b[0], b[1], b[2]);
+- 
+-    vec3.normalize(tempA, tempA);
+-    vec3.normalize(tempB, tempB);
+- 
+-    var cosine = vec3.dot(tempA, tempB);
+-
+-    if(cosine > 1.0){
+-        return 0;
+-    } else {
+-        return Math.acos(cosine);
+-    }     
++StructArray.prototype.get = function(index) {
++    return new this.StructType(this, index);
+ };
+ 
+ /**
+- * Returns a string representation of a vector
+- *
+- * @param {vec3} vec vector to represent as a string
+- * @returns {String} string representation of the vector
++ * Resize the array to discard unused capacity.
++ * @private
+  */
+-vec3.str = function (a) {
+-    return 'vec3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ')';
++StructArray.prototype.trim = function() {
++    if (this.length !== this.capacity) {
++        this.capacity = this.length;
++        this.arrayBuffer = this.arrayBuffer.slice(0, this.length * this.bytesPerElement);
++        this._refreshViews();
++    }
+ };
+ 
+ /**
+- * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {vec3} a The first vector.
+- * @param {vec3} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * Resize the array.
++ * If `n` is greater than the current length then additional elements with undefined values are added.
++ * If `n` is less than the current length then the array will be reduced to the first `n` elements.
++ * @param {number} n The new size of the array.
+  */
+-vec3.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2];
++StructArray.prototype.resize = function(n) {
++    this.length = n;
++    if (n > this.capacity) {
++        this.capacity = Math.max(n, Math.floor(this.capacity * this.RESIZE_MULTIPLIER), this.DEFAULT_CAPACITY);
++        this.arrayBuffer = new ArrayBuffer(this.capacity * this.bytesPerElement);
++
++        var oldUint8Array = this.uint8;
++        this._refreshViews();
++        if (oldUint8Array) this.uint8.set(oldUint8Array);
++    }
+ };
+ 
+ /**
+- * Returns whether or not the vectors have approximately the same elements in the same position.
+- *
+- * @param {vec3} a The first vector.
+- * @param {vec3} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
++ * Create TypedArray views for the current ArrayBuffer.
++ * @private
+  */
+-vec3.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2];
+-    var b0 = b[0], b1 = b[1], b2 = b[2];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)));
++StructArray.prototype._refreshViews = function() {
++    for (var t = 0; t < this._usedTypes.length; t++) {
++        var type = this._usedTypes[t];
++        this[getArrayViewName(type)] = new viewTypes[type](this.arrayBuffer);
++    }
+ };
+ 
+-module.exports = vec3;
+-
+-},{"./common.js":364}],372:[function(require,module,exports){
+-/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.
+-
+-Permission is hereby granted, free of charge, to any person obtaining a copy
+-of this software and associated documentation files (the "Software"), to deal
+-in the Software without restriction, including without limitation the rights
+-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-copies of the Software, and to permit persons to whom the Software is
+-furnished to do so, subject to the following conditions:
+-
+-The above copyright notice and this permission notice shall be included in
+-all copies or substantial portions of the Software.
+-
+-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+-THE SOFTWARE. */
++},{"assert":29}],361:[function(require,module,exports){
++'use strict';
+ 
+-var glMatrix = require("./common.js");
++module.exports = resolveTokens;
+ 
+ /**
+- * @class 4 Dimensional Vector
+- * @name vec4
++ * Replace tokens in a string template with values in an object
++ *
++ * @param {Object} properties a key/value relationship between tokens and replacements
++ * @param {string} text the template string
++ * @returns {string} the template with tokens replaced
++ * @private
+  */
+-var vec4 = {};
++function resolveTokens(properties, text) {
++    return text.replace(/{([^{}()\[\]<>$=:;.,^]+)}/g, function(match, key) {
++        return key in properties ? properties[key] : '';
++    });
++}
++
++},{}],362:[function(require,module,exports){
++'use strict';
++
++var UnitBezier = require('unitbezier');
++var Coordinate = require('../geo/coordinate');
+ 
+ /**
+- * Creates a new, empty vec4
++ * Given a value `t` that varies between 0 and 1, return
++ * an interpolation function that eases between 0 and 1 in a pleasing
++ * cubic in-out fashion.
+  *
+- * @returns {vec4} a new 4D vector
++ * @param {number} t input
++ * @returns {number} input
++ * @private
+  */
+-vec4.create = function() {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = 0;
+-    out[1] = 0;
+-    out[2] = 0;
+-    out[3] = 0;
+-    return out;
++exports.easeCubicInOut = function (t) {
++    if (t <= 0) return 0;
++    if (t >= 1) return 1;
++    var t2 = t * t,
++        t3 = t2 * t;
++    return 4 * (t < 0.5 ? t3 : 3 * (t - t2) + t3 - 0.75);
+ };
+ 
+ /**
+- * Creates a new vec4 initialized with values from an existing vector
++ * Given given (x, y), (x1, y1) control points for a bezier curve,
++ * return a function that interpolates along that curve.
+  *
+- * @param {vec4} a vector to clone
+- * @returns {vec4} a new 4D vector
++ * @param {number} p1x control point 1 x coordinate
++ * @param {number} p1y control point 1 y coordinate
++ * @param {number} p2x control point 2 x coordinate
++ * @param {number} p2y control point 2 y coordinate
++ * @returns {Function} interpolator: receives number value, returns
++ * number value.
++ * @private
+  */
+-vec4.clone = function(a) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
++exports.bezier = function(p1x, p1y, p2x, p2y) {
++    var bezier = new UnitBezier(p1x, p1y, p2x, p2y);
++    return function(t) {
++        return bezier.solve(t);
++    };
+ };
+ 
+ /**
+- * Creates a new vec4 initialized with the given values
++ * A default bezier-curve powered easing function with
++ * control points (0.25, 0.1) and (0.25, 1)
+  *
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {vec4} a new 4D vector
++ * @param {number} t
++ * @returns {number} output
++ * @private
+  */
+-vec4.fromValues = function(x, y, z, w) {
+-    var out = new glMatrix.ARRAY_TYPE(4);
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    out[3] = w;
+-    return out;
+-};
++exports.ease = exports.bezier(0.25, 0.1, 0.25, 1);
+ 
+ /**
+- * Copy the values from one vec4 to another
++ * Given a four-element array of numbers that represents a color in
++ * RGBA, return a version for which the RGB components are multiplied
++ * by the A (alpha) component
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the source vector
+- * @returns {vec4} out
++ * @param {Array<number>} color color array
++ * @returns {Array<number>} premultiplied color array
++ * @private
+  */
+-vec4.copy = function(out, a) {
+-    out[0] = a[0];
+-    out[1] = a[1];
+-    out[2] = a[2];
+-    out[3] = a[3];
+-    return out;
++exports.premultiply = function (color) {
++    if (!color) return null;
++    var opacity = color[3];
++    return [
++        color[0] * opacity,
++        color[1] * opacity,
++        color[2] * opacity,
++        opacity
++    ];
+ };
+ 
+ /**
+- * Set the components of a vec4 to the given values
++ * constrain n to the given range via min + max
+  *
+- * @param {vec4} out the receiving vector
+- * @param {Number} x X component
+- * @param {Number} y Y component
+- * @param {Number} z Z component
+- * @param {Number} w W component
+- * @returns {vec4} out
++ * @param {number} n value
++ * @param {number} min the minimum value to be returned
++ * @param {number} max the maximum value to be returned
++ * @returns {number} the clamped value
++ * @private
+  */
+-vec4.set = function(out, x, y, z, w) {
+-    out[0] = x;
+-    out[1] = y;
+-    out[2] = z;
+-    out[3] = w;
+-    return out;
++exports.clamp = function (n, min, max) {
++    return Math.min(max, Math.max(min, n));
+ };
+ 
+-/**
+- * Adds two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++/*
++ * constrain n to the given range, excluding the minimum, via modular arithmetic
++ * @param {number} n value
++ * @param {number} min the minimum value to be returned, exclusive
++ * @param {number} max the maximum value to be returned, inclusive
++ * @returns {number} constrained number
++ * @private
+  */
+-vec4.add = function(out, a, b) {
+-    out[0] = a[0] + b[0];
+-    out[1] = a[1] + b[1];
+-    out[2] = a[2] + b[2];
+-    out[3] = a[3] + b[3];
+-    return out;
++exports.wrap = function (n, min, max) {
++    var d = max - min;
++    var w = ((n - min) % d + d) % d + min;
++    return (w === min) ? max : w;
+ };
+ 
+-/**
+- * Subtracts vector b from vector a
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++/*
++ * return the first non-null and non-undefined argument to this function.
++ * @returns {*} argument
++ * @private
+  */
+-vec4.subtract = function(out, a, b) {
+-    out[0] = a[0] - b[0];
+-    out[1] = a[1] - b[1];
+-    out[2] = a[2] - b[2];
+-    out[3] = a[3] - b[3];
+-    return out;
++exports.coalesce = function() {
++    for (var i = 0; i < arguments.length; i++) {
++        var arg = arguments[i];
++        if (arg !== null && arg !== undefined)
++            return arg;
++    }
+ };
+ 
+-/**
+- * Alias for {@link vec4.subtract}
+- * @function
++/*
++ * Call an asynchronous function on an array of arguments,
++ * calling `callback` with the completed results of all calls.
++ *
++ * @param {Array<*>} array input to each call of the async function.
++ * @param {Function} fn an async function with signature (data, callback)
++ * @param {Function} callback a callback run after all async work is done.
++ * called with an array, containing the results of each async call.
++ * @returns {undefined}
++ * @private
+  */
+-vec4.sub = vec4.subtract;
++exports.asyncAll = function (array, fn, callback) {
++    if (!array.length) { return callback(null, []); }
++    var remaining = array.length;
++    var results = new Array(array.length);
++    var error = null;
++    array.forEach(function (item, i) {
++        fn(item, function (err, result) {
++            if (err) error = err;
++            results[i] = result;
++            if (--remaining === 0) callback(error, results);
++        });
++    });
++};
+ 
+-/**
+- * Multiplies two vec4's
++/*
++ * Compute the difference between the keys in one object and the keys
++ * in another object.
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++ * @param {Object} obj
++ * @param {Object} other
++ * @returns {Array<string>} keys difference
++ * @private
+  */
+-vec4.multiply = function(out, a, b) {
+-    out[0] = a[0] * b[0];
+-    out[1] = a[1] * b[1];
+-    out[2] = a[2] * b[2];
+-    out[3] = a[3] * b[3];
+-    return out;
++exports.keysDifference = function (obj, other) {
++    var difference = [];
++    for (var i in obj) {
++        if (!(i in other)) {
++            difference.push(i);
++        }
++    }
++    return difference;
+ };
+ 
+ /**
+- * Alias for {@link vec4.multiply}
+- * @function
++ * Given a destination object and optionally many source objects,
++ * copy all properties from the source objects into the destination.
++ * The last source object given overrides properties from previous
++ * source objects.
++ * @param {Object} dest destination object
++ * @param {...Object} sources sources from which properties are pulled
++ * @returns {Object} dest
++ * @private
+  */
+-vec4.mul = vec4.multiply;
++exports.extend = function (dest) {
++    for (var i = 1; i < arguments.length; i++) {
++        var src = arguments[i];
++        for (var k in src) {
++            dest[k] = src[k];
++        }
++    }
++    return dest;
++};
+ 
+ /**
+- * Divides two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++ * Extend a destination object with all properties of the src object,
++ * using defineProperty instead of simple assignment.
++ * @param {Object} dest
++ * @param {Object} src
++ * @returns {Object} dest
++ * @private
+  */
+-vec4.divide = function(out, a, b) {
+-    out[0] = a[0] / b[0];
+-    out[1] = a[1] / b[1];
+-    out[2] = a[2] / b[2];
+-    out[3] = a[3] / b[3];
+-    return out;
++exports.extendAll = function (dest, src) {
++    for (var i in src) {
++        Object.defineProperty(dest, i, Object.getOwnPropertyDescriptor(src, i));
++    }
++    return dest;
+ };
+ 
+ /**
+- * Alias for {@link vec4.divide}
+- * @function
++ * Extend a parent's prototype with all properties in a properties
++ * object.
++ *
++ * @param {Object} parent
++ * @param {Object} props
++ * @returns {Object}
++ * @private
+  */
+-vec4.div = vec4.divide;
++exports.inherit = function (parent, props) {
++    var parentProto = typeof parent === 'function' ? parent.prototype : parent,
++        proto = Object.create(parentProto);
++    exports.extendAll(proto, props);
++    return proto;
++};
+ 
+ /**
+- * Math.ceil the components of a vec4
++ * Given an object and a number of properties as strings, return version
++ * of that object with only those properties.
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to ceil
+- * @returns {vec4} out
++ * @param {Object} src the object
++ * @param {Array<string>} properties an array of property names chosen
++ * to appear on the resulting object.
++ * @returns {Object} object with limited properties.
++ * @example
++ * var foo = { name: 'Charlie', age: 10 };
++ * var justName = pick(foo, ['name']);
++ * // justName = { name: 'Charlie' }
++ * @private
+  */
+-vec4.ceil = function (out, a) {
+-    out[0] = Math.ceil(a[0]);
+-    out[1] = Math.ceil(a[1]);
+-    out[2] = Math.ceil(a[2]);
+-    out[3] = Math.ceil(a[3]);
+-    return out;
++exports.pick = function (src, properties) {
++    var result = {};
++    for (var i = 0; i < properties.length; i++) {
++        var k = properties[i];
++        if (k in src) {
++            result[k] = src[k];
++        }
++    }
++    return result;
+ };
+ 
++var id = 1;
++
+ /**
+- * Math.floor the components of a vec4
++ * Return a unique numeric id, starting at 1 and incrementing with
++ * each call.
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to floor
+- * @returns {vec4} out
++ * @returns {number} unique numeric id.
++ * @private
+  */
+-vec4.floor = function (out, a) {
+-    out[0] = Math.floor(a[0]);
+-    out[1] = Math.floor(a[1]);
+-    out[2] = Math.floor(a[2]);
+-    out[3] = Math.floor(a[3]);
+-    return out;
++exports.uniqueId = function () {
++    return id++;
+ };
+ 
+ /**
+- * Returns the minimum of two vec4's
++ * Create a version of `fn` that is only called `time` milliseconds
++ * after its last invocation
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++ * @param {Function} fn the function to be debounced
++ * @param {number} time millseconds after which the function will be invoked
++ * @returns {Function} debounced function
++ * @private
+  */
+-vec4.min = function(out, a, b) {
+-    out[0] = Math.min(a[0], b[0]);
+-    out[1] = Math.min(a[1], b[1]);
+-    out[2] = Math.min(a[2], b[2]);
+-    out[3] = Math.min(a[3], b[3]);
+-    return out;
++exports.debounce = function(fn, time) {
++    var timer, args;
++
++    return function() {
++        args = arguments;
++        clearTimeout(timer);
++
++        timer = setTimeout(function() {
++            fn.apply(null, args);
++        }, time);
++    };
+ };
+ 
+ /**
+- * Returns the maximum of two vec4's
++ * Given an array of member function names as strings, replace all of them
++ * with bound versions that will always refer to `context` as `this`. This
++ * is useful for classes where otherwise event bindings would reassign
++ * `this` to the evented object or some other value: this lets you ensure
++ * the `this` value always.
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {vec4} out
++ * @param {Array<string>} fns list of member function names
++ * @param {*} context the context value
++ * @returns {undefined} changes functions in-place
++ * @example
++ * function MyClass() {
++ *   bindAll(['ontimer'], this);
++ *   this.name = 'Tom';
++ * }
++ * MyClass.prototype.ontimer = function() {
++ *   alert(this.name);
++ * };
++ * var myClass = new MyClass();
++ * setTimeout(myClass.ontimer, 100);
++ * @private
+  */
+-vec4.max = function(out, a, b) {
+-    out[0] = Math.max(a[0], b[0]);
+-    out[1] = Math.max(a[1], b[1]);
+-    out[2] = Math.max(a[2], b[2]);
+-    out[3] = Math.max(a[3], b[3]);
+-    return out;
++exports.bindAll = function(fns, context) {
++    fns.forEach(function(fn) {
++        context[fn] = context[fn].bind(context);
++    });
+ };
+ 
+ /**
+- * Math.round the components of a vec4
++ * Given a class, bind all of the methods that look like handlers: that
++ * begin with _on, and bind them to the class.
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to round
+- * @returns {vec4} out
++ * @param {Object} context an object with methods
++ * @private
+  */
+-vec4.round = function (out, a) {
+-    out[0] = Math.round(a[0]);
+-    out[1] = Math.round(a[1]);
+-    out[2] = Math.round(a[2]);
+-    out[3] = Math.round(a[3]);
+-    return out;
++exports.bindHandlers = function(context) {
++    for (var i in context) {
++        if (typeof context[i] === 'function' && i.indexOf('_on') === 0) {
++            context[i] = context[i].bind(context);
++        }
++    }
+ };
+ 
+ /**
+- * Scales a vec4 by a scalar number
++ * Set the 'options' property on `obj` with properties
++ * from the `options` argument. Properties in the `options`
++ * object will override existing properties.
+  *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to scale
+- * @param {Number} b amount to scale the vector by
+- * @returns {vec4} out
++ * @param {Object} obj destination object
++ * @param {Object} options object of override options
++ * @returns {Object} derived options object.
++ * @private
+  */
+-vec4.scale = function(out, a, b) {
+-    out[0] = a[0] * b;
+-    out[1] = a[1] * b;
+-    out[2] = a[2] * b;
+-    out[3] = a[3] * b;
+-    return out;
++exports.setOptions = function(obj, options) {
++    if (!obj.hasOwnProperty('options')) {
++        obj.options = obj.options ? Object.create(obj.options) : {};
++    }
++    for (var i in options) {
++        obj.options[i] = options[i];
++    }
++    return obj.options;
+ };
+ 
+ /**
+- * Adds two vec4's after scaling the second operand by a scalar value
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @param {Number} scale the amount to scale b by before adding
+- * @returns {vec4} out
++ * Given a list of coordinates, get their center as a coordinate.
++ * @param {Array<Coordinate>} coords
++ * @returns {Coordinate} centerpoint
++ * @private
+  */
+-vec4.scaleAndAdd = function(out, a, b, scale) {
+-    out[0] = a[0] + (b[0] * scale);
+-    out[1] = a[1] + (b[1] * scale);
+-    out[2] = a[2] + (b[2] * scale);
+-    out[3] = a[3] + (b[3] * scale);
+-    return out;
++exports.getCoordinatesCenter = function(coords) {
++    var minX = Infinity;
++    var minY = Infinity;
++    var maxX = -Infinity;
++    var maxY = -Infinity;
++
++    for (var i = 0; i < coords.length; i++) {
++        minX = Math.min(minX, coords[i].column);
++        minY = Math.min(minY, coords[i].row);
++        maxX = Math.max(maxX, coords[i].column);
++        maxY = Math.max(maxY, coords[i].row);
++    }
++
++    var dx = maxX - minX;
++    var dy = maxY - minY;
++    var dMax = Math.max(dx, dy);
++    return new Coordinate((minX + maxX) / 2, (minY + maxY) / 2, 0)
++        .zoomTo(Math.floor(-Math.log(dMax) / Math.LN2));
+ };
+ 
+ /**
+- * Calculates the euclidian distance between two vec4's
+- *
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {Number} distance between a and b
++ * Determine if a string ends with a particular substring
++ * @param {string} string
++ * @param {string} suffix
++ * @returns {boolean}
++ * @private
+  */
+-vec4.distance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2],
+-        w = b[3] - a[3];
+-    return Math.sqrt(x*x + y*y + z*z + w*w);
++exports.endsWith = function(string, suffix) {
++    return string.indexOf(suffix, string.length - suffix.length) !== -1;
+ };
+ 
+ /**
+- * Alias for {@link vec4.distance}
+- * @function
++ * Determine if a string starts with a particular substring
++ * @param {string} string
++ * @param {string} prefix
++ * @returns {boolean}
++ * @private
+  */
+-vec4.dist = vec4.distance;
++exports.startsWith = function(string, prefix) {
++    return string.indexOf(prefix) === 0;
++};
+ 
+ /**
+- * Calculates the squared euclidian distance between two vec4's
+- *
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {Number} squared distance between a and b
++ * Create an object by mapping all the values of an existing object while
++ * preserving their keys.
++ * @param {Object} input
++ * @param {Function} iterator
++ * @returns {Object}
++ * @private
+  */
+-vec4.squaredDistance = function(a, b) {
+-    var x = b[0] - a[0],
+-        y = b[1] - a[1],
+-        z = b[2] - a[2],
+-        w = b[3] - a[3];
+-    return x*x + y*y + z*z + w*w;
++exports.mapObject = function(input, iterator, context) {
++    var output = {};
++    for (var key in input) {
++        output[key] = iterator.call(context || this, input[key], key, input);
++    }
++    return output;
+ };
+ 
+ /**
+- * Alias for {@link vec4.squaredDistance}
+- * @function
++ * Create an object by filtering out values of an existing object
++ * @param {Object} input
++ * @param {Function} iterator
++ * @returns {Object}
++ * @private
+  */
+-vec4.sqrDist = vec4.squaredDistance;
++exports.filterObject = function(input, iterator, context) {
++    var output = {};
++    for (var key in input) {
++        if (iterator.call(context || this, input[key], key, input)) {
++            output[key] = input[key];
++        }
++    }
++    return output;
++};
+ 
+ /**
+- * Calculates the length of a vec4
+- *
+- * @param {vec4} a vector to calculate length of
+- * @returns {Number} length of a
++ * Deeply compares two object literals.
++ * @param {Object} obj1
++ * @param {Object} obj2
++ * @returns {boolean}
++ * @private
+  */
+-vec4.length = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2],
+-        w = a[3];
+-    return Math.sqrt(x*x + y*y + z*z + w*w);
++exports.deepEqual = function deepEqual(a, b) {
++    if (Array.isArray(a)) {
++        if (!Array.isArray(b) || a.length !== b.length) return false;
++        for (var i = 0; i < a.length; i++) {
++            if (!deepEqual(a[i], b[i])) return false;
++        }
++        return true;
++    }
++    if (typeof a === 'object') {
++        if (!(typeof b === 'object')) return false;
++        var keys = Object.keys(a);
++        if (keys.length !== Object.keys(b).length) return false;
++        for (var key in a) {
++            if (!deepEqual(a[key], b[key])) return false;
++        }
++        return true;
++    }
++    return a === b;
+ };
+ 
+ /**
+- * Alias for {@link vec4.length}
+- * @function
++ * Deeply clones two objects.
++ * @param {Object} obj1
++ * @param {Object} obj2
++ * @returns {boolean}
++ * @private
+  */
+-vec4.len = vec4.length;
++exports.clone = function deepEqual(input) {
++    if (Array.isArray(input)) {
++        return input.map(exports.clone);
++    } else if (typeof input === 'object') {
++        return exports.mapObject(input, exports.clone);
++    } else {
++        return input;
++    }
++};
+ 
+ /**
+- * Calculates the squared length of a vec4
+- *
+- * @param {vec4} a vector to calculate squared length of
+- * @returns {Number} squared length of a
++ * Check if two arrays have at least one common element.
++ * @param {Array} a
++ * @param {Array} b
++ * @returns {boolean}
++ * @private
+  */
+-vec4.squaredLength = function (a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2],
+-        w = a[3];
+-    return x*x + y*y + z*z + w*w;
++exports.arraysIntersect = function(a, b) {
++    for (var l = 0; l < a.length; l++) {
++        if (b.indexOf(a[l]) >= 0) return true;
++    }
++    return false;
+ };
+ 
+-/**
+- * Alias for {@link vec4.squaredLength}
+- * @function
+- */
+-vec4.sqrLen = vec4.squaredLength;
++},{"../geo/coordinate":268,"unitbezier":452}],363:[function(require,module,exports){
++'use strict';
++
++var VectorTileFeature = require('vector-tile').VectorTileFeature;
++
++module.exports = Feature;
++
++function Feature(vectorTileFeature, z, x, y) {
++    this._vectorTileFeature = vectorTileFeature;
++    vectorTileFeature._z = z;
++    vectorTileFeature._x = x;
++    vectorTileFeature._y = y;
++
++    this.properties = vectorTileFeature.properties;
++
++    if (vectorTileFeature._id) {
++        this.id = vectorTileFeature._id;
++    }
++}
++
++Feature.prototype = {
++    type: "Feature",
++
++    get geometry() {
++        if (this._geometry === undefined) {
++            var feature = this._vectorTileFeature;
++            var coords = projectCoords(
++                feature.loadGeometry(),
++                feature.extent,
++                feature._z, feature._x, feature._y);
++
++            var type = VectorTileFeature.types[feature.type];
++
++            if (type === 'Point' && coords.length === 1) {
++                coords = coords[0][0];
++            } else if (type === 'Point') {
++                coords = coords[0];
++                type = 'MultiPoint';
++            } else if (type === 'LineString' && coords.length === 1) {
++                coords = coords[0];
++            } else if (type === 'LineString') {
++                type = 'MultiLineString';
++            }
++
++            this._geometry = {
++                type: type,
++                coordinates: coords
++            };
++
++            this._vectorTileFeature = null;
++        }
++        return this._geometry;
++    },
++
++    set geometry(g) {
++        this._geometry = g;
++    },
++
++    toJSON: function() {
++        var json = {};
++        for (var i in this) {
++            if (i === '_geometry' || i === '_vectorTileFeature') continue;
++            json[i] = this[i];
++        }
++        return json;
++    }
++};
++
++function projectCoords(coords, extent, z, x, y) {
++    var size = extent * Math.pow(2, z),
++        x0 = extent * x,
++        y0 = extent * y;
++    for (var i = 0; i < coords.length; i++) {
++        var line = coords[i];
++        for (var j = 0; j < line.length; j++) {
++            var p = line[j];
++            var y2 = 180 - (p.y + y0) * 360 / size;
++            line[j] = [
++                (p.x + x0) * 360 / size - 180,
++                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
++            ];
++        }
++    }
++    return coords;
++}
++
++},{"vector-tile":456}],364:[function(require,module,exports){
++'use strict'
++
++module.exports = createTable
++
++var chull = require('convex-hull')
++
++function constructVertex(d, a, b) {
++  var x = new Array(d)
++  for(var i=0; i<d; ++i) {
++    x[i] = 0.0
++    if(i === a) {
++      x[i] += 0.5
++    }
++    if(i === b) {
++      x[i] += 0.5
++    }
++  }
++  return x
++}
++
++function constructCell(dimension, mask) {
++  if(mask === 0 || mask === (1<<(dimension+1))-1) {
++    return []
++  }
++  var points = []
++  var index  = []
++  for(var i=0; i<=dimension; ++i) {
++    if(mask & (1<<i)) {
++      points.push(constructVertex(dimension, i-1, i-1))
++      index.push(null)
++      for(var j=0; j<=dimension; ++j) {
++        if(~mask & (1<<j)) {
++          points.push(constructVertex(dimension, i-1, j-1))
++          index.push([i,j])
++        }
++      }
++    }
++  }
++  
++  //Preprocess points so first d+1 points are linearly independent
++  var hull = chull(points)
++  var faces = []
++i_loop:
++  for(var i=0; i<hull.length; ++i) {
++    var face = hull[i]
++    var nface = []
++    for(var j=0; j<face.length; ++j) {
++      if(!index[face[j]]) {
++        continue i_loop
++      }
++      nface.push(index[face[j]].slice())
++    }
++    faces.push(nface)
++  }
++  return faces
++}
++
++function createTable(dimension) {
++  var numCells = 1<<(dimension+1)
++  var result = new Array(numCells)
++  for(var i=0; i<numCells; ++i) {
++    result[i] = constructCell(dimension, i)
++  }
++  return result
++}
++},{"convex-hull":79}],365:[function(require,module,exports){
++/*jshint unused:true*/
++/*
++Input:  matrix      ; a 4x4 matrix
++Output: translation ; a 3 component vector
++        scale       ; a 3 component vector
++        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
++        perspective ; a 4 component vector
++        quaternion  ; a 4 component vector
++Returns false if the matrix cannot be decomposed, true if it can
++
++
++References:
++https://github.com/kamicane/matrix3d/blob/master/lib/Matrix3d.js
++https://github.com/ChromiumWebApps/chromium/blob/master/ui/gfx/transform_util.cc
++http://www.w3.org/TR/css3-transforms/#decomposing-a-3d-matrix
++*/
++
++var normalize = require('./normalize')
++
++var create = require('gl-mat4/create')
++var clone = require('gl-mat4/clone')
++var determinant = require('gl-mat4/determinant')
++var invert = require('gl-mat4/invert')
++var transpose = require('gl-mat4/transpose')
++var vec3 = {
++    length: require('gl-vec3/length'),
++    normalize: require('gl-vec3/normalize'),
++    dot: require('gl-vec3/dot'),
++    cross: require('gl-vec3/cross')
++}
++
++var tmp = create()
++var perspectiveMatrix = create()
++var tmpVec4 = [0, 0, 0, 0]
++var row = [ [0,0,0], [0,0,0], [0,0,0] ]
++var pdum3 = [0,0,0]
++
++module.exports = function decomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
++    if (!translation) translation = [0,0,0]
++    if (!scale) scale = [0,0,0]
++    if (!skew) skew = [0,0,0]
++    if (!perspective) perspective = [0,0,0,1]
++    if (!quaternion) quaternion = [0,0,0,1]
++
++    //normalize, if not possible then bail out early
++    if (!normalize(tmp, matrix))
++        return false
++
++    // perspectiveMatrix is used to solve for perspective, but it also provides
++    // an easy way to test for singularity of the upper 3x3 component.
++    clone(perspectiveMatrix, tmp)
++
++    perspectiveMatrix[3] = 0
++    perspectiveMatrix[7] = 0
++    perspectiveMatrix[11] = 0
++    perspectiveMatrix[15] = 1
++
++    // If the perspectiveMatrix is not invertible, we are also unable to
++    // decompose, so we'll bail early. Constant taken from SkMatrix44::invert.
++    if (Math.abs(determinant(perspectiveMatrix) < 1e-8))
++        return false
++
++    var a03 = tmp[3], a13 = tmp[7], a23 = tmp[11],
++            a30 = tmp[12], a31 = tmp[13], a32 = tmp[14], a33 = tmp[15]
++
++    // First, isolate perspective.
++    if (a03 !== 0 || a13 !== 0 || a23 !== 0) {
++        tmpVec4[0] = a03
++        tmpVec4[1] = a13
++        tmpVec4[2] = a23
++        tmpVec4[3] = a33
++
++        // Solve the equation by inverting perspectiveMatrix and multiplying
++        // rightHandSide by the inverse.
++        // resuing the perspectiveMatrix here since it's no longer needed
++        var ret = invert(perspectiveMatrix, perspectiveMatrix)
++        if (!ret) return false
++        transpose(perspectiveMatrix, perspectiveMatrix)
++
++        //multiply by transposed inverse perspective matrix, into perspective vec4
++        vec4multMat4(perspective, tmpVec4, perspectiveMatrix)
++    } else { 
++        //no perspective
++        perspective[0] = perspective[1] = perspective[2] = 0
++        perspective[3] = 1
++    }
++
++    // Next take care of translation
++    translation[0] = a30
++    translation[1] = a31
++    translation[2] = a32
++
++    // Now get scale and shear. 'row' is a 3 element array of 3 component vectors
++    mat3from4(row, tmp)
++
++    // Compute X scale factor and normalize first row.
++    scale[0] = vec3.length(row[0])
++    vec3.normalize(row[0], row[0])
+ 
+-/**
+- * Negates the components of a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to negate
+- * @returns {vec4} out
+- */
+-vec4.negate = function(out, a) {
+-    out[0] = -a[0];
+-    out[1] = -a[1];
+-    out[2] = -a[2];
+-    out[3] = -a[3];
+-    return out;
+-};
++    // Compute XY shear factor and make 2nd row orthogonal to 1st.
++    skew[0] = vec3.dot(row[0], row[1])
++    combine(row[1], row[1], row[0], 1.0, -skew[0])
+ 
+-/**
+- * Returns the inverse of the components of a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to invert
+- * @returns {vec4} out
+- */
+-vec4.inverse = function(out, a) {
+-  out[0] = 1.0 / a[0];
+-  out[1] = 1.0 / a[1];
+-  out[2] = 1.0 / a[2];
+-  out[3] = 1.0 / a[3];
+-  return out;
+-};
++    // Now, compute Y scale and normalize 2nd row.
++    scale[1] = vec3.length(row[1])
++    vec3.normalize(row[1], row[1])
++    skew[0] /= scale[1]
+ 
+-/**
+- * Normalize a vec4
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a vector to normalize
+- * @returns {vec4} out
+- */
+-vec4.normalize = function(out, a) {
+-    var x = a[0],
+-        y = a[1],
+-        z = a[2],
+-        w = a[3];
+-    var len = x*x + y*y + z*z + w*w;
+-    if (len > 0) {
+-        len = 1 / Math.sqrt(len);
+-        out[0] = x * len;
+-        out[1] = y * len;
+-        out[2] = z * len;
+-        out[3] = w * len;
+-    }
+-    return out;
+-};
++    // Compute XZ and YZ shears, orthogonalize 3rd row
++    skew[1] = vec3.dot(row[0], row[2])
++    combine(row[2], row[2], row[0], 1.0, -skew[1])
++    skew[2] = vec3.dot(row[1], row[2])
++    combine(row[2], row[2], row[1], 1.0, -skew[2])
+ 
+-/**
+- * Calculates the dot product of two vec4's
+- *
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @returns {Number} dot product of a and b
+- */
+-vec4.dot = function (a, b) {
+-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+-};
++    // Next, get Z scale and normalize 3rd row.
++    scale[2] = vec3.length(row[2])
++    vec3.normalize(row[2], row[2])
++    skew[1] /= scale[2]
++    skew[2] /= scale[2]
+ 
+-/**
+- * Performs a linear interpolation between two vec4's
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the first operand
+- * @param {vec4} b the second operand
+- * @param {Number} t interpolation amount between the two inputs
+- * @returns {vec4} out
+- */
+-vec4.lerp = function (out, a, b, t) {
+-    var ax = a[0],
+-        ay = a[1],
+-        az = a[2],
+-        aw = a[3];
+-    out[0] = ax + t * (b[0] - ax);
+-    out[1] = ay + t * (b[1] - ay);
+-    out[2] = az + t * (b[2] - az);
+-    out[3] = aw + t * (b[3] - aw);
+-    return out;
+-};
+ 
+-/**
+- * Generates a random vector with the given scale
+- *
+- * @param {vec4} out the receiving vector
+- * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+- * @returns {vec4} out
+- */
+-vec4.random = function (out, scale) {
+-    scale = scale || 1.0;
++    // At this point, the matrix (in rows) is orthonormal.
++    // Check for a coordinate system flip.  If the determinant
++    // is -1, then negate the matrix and the scaling factors.
++    vec3.cross(pdum3, row[1], row[2])
++    if (vec3.dot(row[0], pdum3) < 0) {
++        for (var i = 0; i < 3; i++) {
++            scale[i] *= -1;
++            row[i][0] *= -1
++            row[i][1] *= -1
++            row[i][2] *= -1
++        }
++    }
+ 
+-    //TODO: This is a pretty awful way of doing this. Find something better.
+-    out[0] = glMatrix.RANDOM();
+-    out[1] = glMatrix.RANDOM();
+-    out[2] = glMatrix.RANDOM();
+-    out[3] = glMatrix.RANDOM();
+-    vec4.normalize(out, out);
+-    vec4.scale(out, out, scale);
+-    return out;
+-};
++    // Now, get the rotations out
++    quaternion[0] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] - row[1][1] - row[2][2], 0))
++    quaternion[1] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] + row[1][1] - row[2][2], 0))
++    quaternion[2] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] - row[1][1] + row[2][2], 0))
++    quaternion[3] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] + row[1][1] + row[2][2], 0))
+ 
+-/**
+- * Transforms the vec4 with a mat4.
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to transform
+- * @param {mat4} m matrix to transform with
+- * @returns {vec4} out
+- */
+-vec4.transformMat4 = function(out, a, m) {
++    if (row[2][1] > row[1][2])
++        quaternion[0] = -quaternion[0]
++    if (row[0][2] > row[2][0])
++        quaternion[1] = -quaternion[1]
++    if (row[1][0] > row[0][1])
++        quaternion[2] = -quaternion[2]
++    return true
++}
++
++//will be replaced by gl-vec4 eventually
++function vec4multMat4(out, a, m) {
+     var x = a[0], y = a[1], z = a[2], w = a[3];
+     out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
+     out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
+     out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
+     out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
+     return out;
+-};
++}
+ 
+-/**
+- * Transforms the vec4 with a quat
+- *
+- * @param {vec4} out the receiving vector
+- * @param {vec4} a the vector to transform
+- * @param {quat} q quaternion to transform with
+- * @returns {vec4} out
+- */
+-vec4.transformQuat = function(out, a, q) {
+-    var x = a[0], y = a[1], z = a[2],
+-        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
++//gets upper-left of a 4x4 matrix into a 3x3 of vectors
++function mat3from4(out, mat4x4) {
++    out[0][0] = mat4x4[0]
++    out[0][1] = mat4x4[1]
++    out[0][2] = mat4x4[2]
++    
++    out[1][0] = mat4x4[4]
++    out[1][1] = mat4x4[5]
++    out[1][2] = mat4x4[6]
+ 
+-        // calculate quat * vec
+-        ix = qw * x + qy * z - qz * y,
+-        iy = qw * y + qz * x - qx * z,
+-        iz = qw * z + qx * y - qy * x,
+-        iw = -qx * x - qy * y - qz * z;
++    out[2][0] = mat4x4[8]
++    out[2][1] = mat4x4[9]
++    out[2][2] = mat4x4[10]
++}
+ 
+-    // calculate result * inverse quat
+-    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+-    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+-    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+-    out[3] = a[3];
+-    return out;
+-};
++function combine(out, a, b, scale1, scale2) {
++    out[0] = a[0] * scale1 + b[0] * scale2
++    out[1] = a[1] * scale1 + b[1] * scale2
++    out[2] = a[2] * scale1 + b[2] * scale2
++}
++},{"./normalize":366,"gl-mat4/clone":136,"gl-mat4/create":137,"gl-mat4/determinant":138,"gl-mat4/invert":142,"gl-mat4/transpose":152,"gl-vec3/cross":207,"gl-vec3/dot":208,"gl-vec3/length":209,"gl-vec3/normalize":211}],366:[function(require,module,exports){
++module.exports = function normalize(out, mat) {
++    var m44 = mat[15]
++    // Cannot normalize.
++    if (m44 === 0) 
++        return false
++    var scale = 1 / m44
++    for (var i=0; i<16; i++)
++        out[i] = mat[i] * scale
++    return true
++}
++},{}],367:[function(require,module,exports){
++var lerp = require('gl-vec3/lerp')
+ 
+-/**
+- * Perform some operation over an array of vec4s.
+- *
+- * @param {Array} a the array of vectors to iterate over
+- * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed
+- * @param {Number} offset Number of elements to skip at the beginning of the array
+- * @param {Number} count Number of vec4s to iterate over. If 0 iterates over entire array
+- * @param {Function} fn Function to call for each vector in the array
+- * @param {Object} [arg] additional argument to pass to fn
+- * @returns {Array} a
+- * @function
+- */
+-vec4.forEach = (function() {
+-    var vec = vec4.create();
++var recompose = require('mat4-recompose')
++var decompose = require('mat4-decompose')
++var determinant = require('gl-mat4/determinant')
++var slerp = require('quat-slerp')
+ 
+-    return function(a, stride, offset, count, fn, arg) {
+-        var i, l;
+-        if(!stride) {
+-            stride = 4;
+-        }
++var state0 = state()
++var state1 = state()
++var tmp = state()
+ 
+-        if(!offset) {
+-            offset = 0;
+-        }
+-        
+-        if(count) {
+-            l = Math.min((count * stride) + offset, a.length);
+-        } else {
+-            l = a.length;
+-        }
++module.exports = interpolate
++function interpolate(out, start, end, alpha) {
++    if (determinant(start) === 0 || determinant(end) === 0)
++        return false
+ 
+-        for(i = offset; i < l; i += stride) {
+-            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2]; vec[3] = a[i+3];
+-            fn(vec, vec, arg);
+-            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2]; a[i+3] = vec[3];
+-        }
+-        
+-        return a;
+-    };
+-})();
++    //decompose the start and end matrices into individual components
++    var r0 = decompose(start, state0.translate, state0.scale, state0.skew, state0.perspective, state0.quaternion)
++    var r1 = decompose(end, state1.translate, state1.scale, state1.skew, state1.perspective, state1.quaternion)
++    if (!r0 || !r1)
++        return false    
+ 
+-/**
+- * Returns a string representation of a vector
+- *
+- * @param {vec4} vec vector to represent as a string
+- * @returns {String} string representation of the vector
+- */
+-vec4.str = function (a) {
+-    return 'vec4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+-};
+ 
+-/**
+- * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
+- *
+- * @param {vec4} a The first vector.
+- * @param {vec4} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-vec4.exactEquals = function (a, b) {
+-    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
+-};
++    //now lerp/slerp the start and end components into a temporary     lerp(tmptranslate, state0.translate, state1.translate, alpha)
++    lerp(tmp.translate, state0.translate, state1.translate, alpha)
++    lerp(tmp.skew, state0.skew, state1.skew, alpha)
++    lerp(tmp.scale, state0.scale, state1.scale, alpha)
++    lerp(tmp.perspective, state0.perspective, state1.perspective, alpha)
++    slerp(tmp.quaternion, state0.quaternion, state1.quaternion, alpha)
+ 
+-/**
+- * Returns whether or not the vectors have approximately the same elements in the same position.
+- *
+- * @param {vec4} a The first vector.
+- * @param {vec4} b The second vector.
+- * @returns {Boolean} True if the vectors are equal, false otherwise.
+- */
+-vec4.equals = function (a, b) {
+-    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
+-    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+-    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
+-            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
+-            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
+-            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
+-};
++    //and recompose into our 'out' matrix
++    recompose(out, tmp.translate, tmp.scale, tmp.skew, tmp.perspective, tmp.quaternion)
++    return true
++}
+ 
+-module.exports = vec4;
++function state() {
++    return {
++        translate: vec3(),
++        scale: vec3(1),
++        skew: vec3(),
++        perspective: vec4(),
++        quaternion: vec4()
++    }
++}
+ 
+-},{"./common.js":364}],373:[function(require,module,exports){
+-'use strict';
++function vec3(n) {
++    return [n||0,n||0,n||0]
++}
+ 
+-module.exports = GridIndex;
++function vec4() {
++    return [0,0,0,1]
++}
++},{"gl-mat4/determinant":138,"gl-vec3/lerp":210,"mat4-decompose":365,"mat4-recompose":368,"quat-slerp":404}],368:[function(require,module,exports){
++/*
++Input:  translation ; a 3 component vector
++        scale       ; a 3 component vector
++        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
++        perspective ; a 4 component vector
++        quaternion  ; a 4 component vector
++Output: matrix      ; a 4x4 matrix
+ 
+-var NUM_PARAMS = 3;
++From: http://www.w3.org/TR/css3-transforms/#recomposing-to-a-3d-matrix
++*/
+ 
+-function GridIndex(extent, n, padding) {
+-    var cells = this.cells = [];
++var mat4 = {
++    identity: require('gl-mat4/identity'),
++    translate: require('gl-mat4/translate'),
++    multiply: require('gl-mat4/multiply'),
++    create: require('gl-mat4/create'),
++    scale: require('gl-mat4/scale'),
++    fromRotationTranslation: require('gl-mat4/fromRotationTranslation')
++}
+ 
+-    if (extent instanceof ArrayBuffer) {
+-        this.arrayBuffer = extent;
+-        var array = new Int32Array(this.arrayBuffer);
+-        extent = array[0];
+-        n = array[1];
+-        padding = array[2];
++var rotationMatrix = mat4.create()
++var temp = mat4.create()
+ 
+-        this.d = n + 2 * padding;
+-        for (var k = 0; k < this.d * this.d; k++) {
+-            var start = array[NUM_PARAMS + k];
+-            var end = array[NUM_PARAMS + k + 1];
+-            cells.push(start === end ?
+-                    null :
+-                    array.subarray(start, end));
+-        }
+-        var keysOffset = array[NUM_PARAMS + cells.length];
+-        var bboxesOffset = array[NUM_PARAMS + cells.length + 1];
+-        this.keys = array.subarray(keysOffset, bboxesOffset);
+-        this.bboxes = array.subarray(bboxesOffset);
++module.exports = function recomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
++    mat4.identity(matrix)
+ 
+-        this.insert = this._insertReadonly;
++    //apply translation & rotation
++    mat4.fromRotationTranslation(matrix, quaternion, translation)
++
++    //apply perspective
++    matrix[3] = perspective[0]
++    matrix[7] = perspective[1]
++    matrix[11] = perspective[2]
++    matrix[15] = perspective[3]
++        
++    // apply skew
++    // temp is a identity 4x4 matrix initially
++    mat4.identity(temp)
++
++    if (skew[2] !== 0) {
++        temp[9] = skew[2]
++        mat4.multiply(matrix, matrix, temp)
++    }
++
++    if (skew[1] !== 0) {
++        temp[9] = 0
++        temp[8] = skew[1]
++        mat4.multiply(matrix, matrix, temp)
++    }
++
++    if (skew[0] !== 0) {
++        temp[8] = 0
++        temp[4] = skew[0]
++        mat4.multiply(matrix, matrix, temp)
++    }
++
++    //apply scale
++    mat4.scale(matrix, matrix, scale)
++    return matrix
++}
++},{"gl-mat4/create":137,"gl-mat4/fromRotationTranslation":140,"gl-mat4/identity":141,"gl-mat4/multiply":144,"gl-mat4/scale":150,"gl-mat4/translate":151}],369:[function(require,module,exports){
++'use strict'
++
++var bsearch   = require('binary-search-bounds')
++var m4interp  = require('mat4-interpolate')
++var invert44  = require('gl-mat4/invert')
++var rotateX   = require('gl-mat4/rotateX')
++var rotateY   = require('gl-mat4/rotateY')
++var rotateZ   = require('gl-mat4/rotateZ')
++var lookAt    = require('gl-mat4/lookAt')
++var translate = require('gl-mat4/translate')
++var scale     = require('gl-mat4/scale')
++var normalize = require('gl-vec3/normalize')
++
++var DEFAULT_CENTER = [0,0,0]
++
++module.exports = createMatrixCameraController
++
++function MatrixCameraController(initialMatrix) {
++  this._components    = initialMatrix.slice()
++  this._time          = [0]
++  this.prevMatrix     = initialMatrix.slice()
++  this.nextMatrix     = initialMatrix.slice()
++  this.computedMatrix = initialMatrix.slice()
++  this.computedInverse = initialMatrix.slice()
++  this.computedEye    = [0,0,0]
++  this.computedUp     = [0,0,0]
++  this.computedCenter = [0,0,0]
++  this.computedRadius = [0]
++  this._limits        = [-Infinity, Infinity]
++}
++
++var proto = MatrixCameraController.prototype
+ 
++proto.recalcMatrix = function(t) {
++  var time = this._time
++  var tidx = bsearch.le(time, t)
++  var mat = this.computedMatrix
++  if(tidx < 0) {
++    return
++  }
++  var comps = this._components
++  if(tidx === time.length-1) {
++    var ptr = 16*tidx
++    for(var i=0; i<16; ++i) {
++      mat[i] = comps[ptr++]
++    }
++  } else {
++    var dt = (time[tidx+1] - time[tidx])
++    var ptr = 16*tidx
++    var prev = this.prevMatrix
++    var allEqual = true
++    for(var i=0; i<16; ++i) {
++      prev[i] = comps[ptr++]
++    }
++    var next = this.nextMatrix
++    for(var i=0; i<16; ++i) {
++      next[i] = comps[ptr++]
++      allEqual = allEqual && (prev[i] === next[i])
++    }
++    if(dt < 1e-6 || allEqual) {
++      for(var i=0; i<16; ++i) {
++        mat[i] = prev[i]
++      }
+     } else {
+-        this.d = n + 2 * padding;
+-        for (var i = 0; i < this.d * this.d; i++) {
+-            cells.push([]);
+-        }
+-        this.keys = [];
+-        this.bboxes = [];
++      m4interp(mat, prev, next, (t - time[tidx])/dt)
+     }
++  }
++
++  var up = this.computedUp
++  up[0] = mat[1]
++  up[1] = mat[5]
++  up[2] = mat[6]
++  normalize(up, up)
++
++  var imat = this.computedInverse
++  invert44(imat, mat)
++  var eye = this.computedEye
++  var w = imat[15]
++  eye[0] = imat[12]/w
++  eye[1] = imat[13]/w
++  eye[2] = imat[14]/w
++
++  var center = this.computedCenter
++  var radius = Math.exp(this.computedRadius[0])
++  for(var i=0; i<3; ++i) {
++    center[i] = eye[i] - mat[2+4*i] * radius
++  }
++}
++
++proto.idle = function(t) {
++  if(t < this.lastT()) {
++    return
++  }
++  var mc = this._components
++  var ptr = mc.length-16
++  for(var i=0; i<16; ++i) {
++    mc.push(mc[ptr++])
++  }
++  this._time.push(t)
++}
++
++proto.flush = function(t) {
++  var idx = bsearch.gt(this._time, t) - 2
++  if(idx < 0) {
++    return
++  }
++  this._time.slice(0, idx)
++  this._components.slice(0, 16*idx)
++}
++
++proto.lastT = function() {
++  return this._time[this._time.length-1]
++}
+ 
+-    this.n = n;
+-    this.extent = extent;
+-    this.padding = padding;
+-    this.scale = n / extent;
+-    this.uid = 0;
++proto.lookAt = function(t, eye, center, up) {
++  this.recalcMatrix(t)
++  eye    = eye || this.computedEye
++  center = center || DEFAULT_CENTER
++  up     = up || this.computedUp
++  this.setMatrix(t, lookAt(this.computedMatrix, eye, center, up))
++  var d2 = 0.0
++  for(var i=0; i<3; ++i) {
++    d2 += Math.pow(center[i] - eye[i], 2)
++  }
++  d2 = Math.log(Math.sqrt(d2))
++  this.computedRadius[0] = d2
++}
+ 
+-    var p = (padding / n) * extent;
+-    this.min = -p;
+-    this.max = extent + p;
++proto.rotate = function(t, yaw, pitch, roll) {
++  this.recalcMatrix(t)
++  var mat = this.computedInverse
++  if(yaw)   rotateY(mat, mat, yaw)
++  if(pitch) rotateX(mat, mat, pitch)
++  if(roll)  rotateZ(mat, mat, roll)
++  this.setMatrix(t, invert44(this.computedMatrix, mat))
+ }
+ 
++var tvec = [0,0,0]
+ 
+-GridIndex.prototype.insert = function(key, x1, y1, x2, y2) {
+-    this._forEachCell(x1, y1, x2, y2, this._insertCell, this.uid++);
+-    this.keys.push(key);
+-    this.bboxes.push(x1);
+-    this.bboxes.push(y1);
+-    this.bboxes.push(x2);
+-    this.bboxes.push(y2);
+-};
++proto.pan = function(t, dx, dy, dz) {
++  tvec[0] = -(dx || 0.0)
++  tvec[1] = -(dy || 0.0)
++  tvec[2] = -(dz || 0.0)
++  this.recalcMatrix(t)
++  var mat = this.computedInverse
++  translate(mat, mat, tvec)
++  this.setMatrix(t, invert44(mat, mat))
++}
+ 
+-GridIndex.prototype._insertReadonly = function() {
+-    throw 'Cannot insert into a GridIndex created from an ArrayBuffer.';
+-};
++proto.translate = function(t, dx, dy, dz) {
++  tvec[0] = dx || 0.0
++  tvec[1] = dy || 0.0
++  tvec[2] = dz || 0.0
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
++  translate(mat, mat, tvec)
++  this.setMatrix(t, mat)
++}
+ 
+-GridIndex.prototype._insertCell = function(x1, y1, x2, y2, cellIndex, uid) {
+-    this.cells[cellIndex].push(uid);
+-};
++proto.setMatrix = function(t, mat) {
++  if(t < this.lastT()) {
++    return
++  }
++  this._time.push(t)
++  for(var i=0; i<16; ++i) {
++    this._components.push(mat[i])
++  }
++}
+ 
+-GridIndex.prototype.query = function(x1, y1, x2, y2) {
+-    var min = this.min;
+-    var max = this.max;
+-    if (x1 <= min && y1 <= min && max <= x2 && max <= y2) {
+-        return this.keys.slice();
++proto.setDistance = function(t, d) {
++  this.computedRadius[0] = d
++}
+ 
+-    } else {
+-        var result = [];
+-        var seenUids = {};
+-        this._forEachCell(x1, y1, x2, y2, this._queryCell, result, seenUids);
+-        return result;
+-    }
+-};
++proto.setDistanceLimits = function(a,b) {
++  var lim = this._limits
++  lim[0] = a
++  lim[1] = b
++}
+ 
+-GridIndex.prototype._queryCell = function(x1, y1, x2, y2, cellIndex, result, seenUids) {
+-    var cell = this.cells[cellIndex];
+-    if (cell !== null) {
+-        var keys = this.keys;
+-        var bboxes = this.bboxes;
+-        for (var u = 0; u < cell.length; u++) {
+-            var uid = cell[u];
+-            if (seenUids[uid] === undefined) {
+-                var offset = uid * 4;
+-                if ((x1 <= bboxes[offset + 2]) &&
+-                    (y1 <= bboxes[offset + 3]) &&
+-                    (x2 >= bboxes[offset + 0]) &&
+-                    (y2 >= bboxes[offset + 1])) {
+-                    seenUids[uid] = true;
+-                    result.push(keys[uid]);
+-                } else {
+-                    seenUids[uid] = false;
+-                }
+-            }
+-        }
+-    }
+-};
++proto.getDistanceLimits = function(out) {
++  var lim = this._limits
++  if(out) {
++    out[0] = lim[0]
++    out[1] = lim[1]
++    return out
++  }
++  return lim
++}
+ 
+-GridIndex.prototype._forEachCell = function(x1, y1, x2, y2, fn, arg1, arg2) {
+-    var cx1 = this._convertToCellCoord(x1);
+-    var cy1 = this._convertToCellCoord(y1);
+-    var cx2 = this._convertToCellCoord(x2);
+-    var cy2 = this._convertToCellCoord(y2);
+-    for (var x = cx1; x <= cx2; x++) {
+-        for (var y = cy1; y <= cy2; y++) {
+-            var cellIndex = this.d * y + x;
+-            if (fn.call(this, x1, y1, x2, y2, cellIndex, arg1, arg2)) return;
+-        }
+-    }
+-};
++function createMatrixCameraController(options) {
++  options = options || {}
++  var matrix = options.matrix || 
++              [1,0,0,0,
++               0,1,0,0,
++               0,0,1,0,
++               0,0,0,1]
++  return new MatrixCameraController(matrix)
++}
++},{"binary-search-bounds":48,"gl-mat4/invert":142,"gl-mat4/lookAt":143,"gl-mat4/rotateX":147,"gl-mat4/rotateY":148,"gl-mat4/rotateZ":149,"gl-mat4/scale":150,"gl-mat4/translate":151,"gl-vec3/normalize":211,"mat4-interpolate":367}],370:[function(require,module,exports){
++'use strict'
+ 
+-GridIndex.prototype._convertToCellCoord = function(x) {
+-    return Math.max(0, Math.min(this.d - 1, Math.floor(x * this.scale) + this.padding));
+-};
++module.exports = monotoneConvexHull2D
+ 
+-GridIndex.prototype.toArrayBuffer = function() {
+-    if (this.arrayBuffer) return this.arrayBuffer;
++var orient = require('robust-orientation')[3]
+ 
+-    var cells = this.cells;
++function monotoneConvexHull2D(points) {
++  var n = points.length
+ 
+-    var metadataLength = NUM_PARAMS + this.cells.length + 1 + 1;
+-    var totalCellLength = 0;
+-    for (var i = 0; i < this.cells.length; i++) {
+-        totalCellLength += this.cells[i].length;
++  if(n < 3) {
++    var result = new Array(n)
++    for(var i=0; i<n; ++i) {
++      result[i] = i
+     }
+ 
+-    var array = new Int32Array(metadataLength + totalCellLength + this.keys.length + this.bboxes.length);
+-    array[0] = this.extent;
+-    array[1] = this.n;
+-    array[2] = this.padding;
+-
+-    var offset = metadataLength;
+-    for (var k = 0; k < cells.length; k++) {
+-        var cell = cells[k];
+-        array[NUM_PARAMS + k] = offset;
+-        array.set(cell, offset);
+-        offset += cell.length;
++    if(n === 2 &&
++       points[0][0] === points[1][0] &&
++       points[0][1] === points[1][1]) {
++      return [0]
+     }
+ 
+-    array[NUM_PARAMS + cells.length] = offset;
+-    array.set(this.keys, offset);
+-    offset += this.keys.length;
++    return result
++  }
+ 
+-    array[NUM_PARAMS + cells.length + 1] = offset;
+-    array.set(this.bboxes, offset);
+-    offset += this.bboxes.length;
++  //Sort point indices along x-axis
++  var sorted = new Array(n)
++  for(var i=0; i<n; ++i) {
++    sorted[i] = i
++  }
++  sorted.sort(function(a,b) {
++    var d = points[a][0]-points[b][0]
++    if(d) {
++      return d
++    }
++    return points[a][1] - points[b][1]
++  })
+ 
+-    return array.buffer;
+-};
++  //Construct upper and lower hulls
++  var lower = [sorted[0], sorted[1]]
++  var upper = [sorted[0], sorted[1]]
+ 
+-},{}],374:[function(require,module,exports){
+-'use strict';
++  for(var i=2; i<n; ++i) {
++    var idx = sorted[i]
++    var p   = points[idx]
+ 
+-function createFunction(parameters, defaultType) {
+-    var fun;
++    //Insert into lower list
++    var m = lower.length
++    while(m > 1 && orient(
++        points[lower[m-2]], 
++        points[lower[m-1]], 
++        p) <= 0) {
++      m -= 1
++      lower.pop()
++    }
++    lower.push(idx)
+ 
+-    if (!isFunctionDefinition(parameters)) {
+-        fun = function() { return parameters; };
+-        fun.isFeatureConstant = true;
+-        fun.isZoomConstant = true;
++    //Insert into upper list
++    m = upper.length
++    while(m > 1 && orient(
++        points[upper[m-2]], 
++        points[upper[m-1]], 
++        p) >= 0) {
++      m -= 1
++      upper.pop()
++    }
++    upper.push(idx)
++  }
+ 
+-    } else {
+-        var zoomAndFeatureDependent = typeof parameters.stops[0][0] === 'object';
+-        var featureDependent = zoomAndFeatureDependent || parameters.property !== undefined;
+-        var zoomDependent = zoomAndFeatureDependent || !featureDependent;
+-        var type = parameters.type || defaultType || 'exponential';
++  //Merge lists together
++  var result = new Array(upper.length + lower.length - 2)
++  var ptr    = 0
++  for(var i=0, nl=lower.length; i<nl; ++i) {
++    result[ptr++] = lower[i]
++  }
++  for(var j=upper.length-2; j>0; --j) {
++    result[ptr++] = upper[j]
++  }
+ 
+-        var innerFun;
+-        if (type === 'exponential') {
+-            innerFun = evaluateExponentialFunction;
+-        } else if (type === 'interval') {
+-            innerFun = evaluateIntervalFunction;
+-        } else if (type === 'categorical') {
+-            innerFun = evaluateCategoricalFunction;
+-        } else {
+-            throw new Error('Unknown function type "' + type + '"');
+-        }
++  //Return result
++  return result
++}
++},{"robust-orientation":418}],371:[function(require,module,exports){
++'use strict'
+ 
+-        if (zoomAndFeatureDependent) {
+-            var featureFunctions = {};
+-            var featureFunctionStops = [];
+-            for (var s = 0; s < parameters.stops.length; s++) {
+-                var stop = parameters.stops[s];
+-                if (featureFunctions[stop[0].zoom] === undefined) {
+-                    featureFunctions[stop[0].zoom] = {
+-                        zoom: stop[0].zoom,
+-                        type: parameters.type,
+-                        property: parameters.property,
+-                        stops: []
+-                    };
+-                }
+-                featureFunctions[stop[0].zoom].stops.push([stop[0].value, stop[1]]);
+-            }
++module.exports = mouseListen
+ 
+-            for (var z in featureFunctions) {
+-                featureFunctionStops.push([featureFunctions[z].zoom, createFunction(featureFunctions[z])]);
+-            }
+-            fun = function(zoom, feature) {
+-                return evaluateExponentialFunction({ stops: featureFunctionStops, base: parameters.base }, zoom)(zoom, feature);
+-            };
+-            fun.isFeatureConstant = false;
+-            fun.isZoomConstant = false;
++var mouse = require('mouse-event')
+ 
+-        } else if (zoomDependent) {
+-            fun = function(zoom) {
+-                return innerFun(parameters, zoom);
+-            };
+-            fun.isFeatureConstant = true;
+-            fun.isZoomConstant = false;
+-        } else {
+-            fun = function(zoom, feature) {
+-                return innerFun(parameters, feature[parameters.property]);
+-            };
+-            fun.isFeatureConstant = false;
+-            fun.isZoomConstant = true;
+-        }
+-    }
++function mouseListen(element, callback) {
++  if(!callback) {
++    callback = element
++    element = window
++  }
+ 
+-    return fun;
+-}
++  var buttonState = 0
++  var x = 0
++  var y = 0
++  var mods = {
++    shift:   false,
++    alt:     false,
++    control: false,
++    meta:    false
++  }
++  var attached = false
+ 
+-function evaluateCategoricalFunction(parameters, input) {
+-    for (var i = 0; i < parameters.stops.length; i++) {
+-        if (input === parameters.stops[i][0]) {
+-            return parameters.stops[i][1];
+-        }
++  function updateMods(ev) {
++    var changed = false
++    if('altKey' in ev) {
++      changed = changed || ev.altKey !== mods.alt
++      mods.alt = !!ev.altKey
+     }
+-    return parameters.stops[0][1];
+-}
+-
+-function evaluateIntervalFunction(parameters, input) {
+-    for (var i = 0; i < parameters.stops.length; i++) {
+-        if (input < parameters.stops[i][0]) break;
++    if('shiftKey' in ev) {
++      changed = changed || ev.shiftKey !== mods.shift
++      mods.shift = !!ev.shiftKey
+     }
+-    return parameters.stops[Math.max(i - 1, 0)][1];
+-}
+-
+-function evaluateExponentialFunction(parameters, input) {
+-    var base = parameters.base !== undefined ? parameters.base : 1;
++    if('ctrlKey' in ev) {
++      changed = changed || ev.ctrlKey !== mods.control
++      mods.control = !!ev.ctrlKey
++    }
++    if('metaKey' in ev) {
++      changed = changed || ev.metaKey !== mods.meta
++      mods.meta = !!ev.metaKey
++    }
++    return changed
++  }
+ 
+-    var i = 0;
+-    while (true) {
+-        if (i >= parameters.stops.length) break;
+-        else if (input <= parameters.stops[i][0]) break;
+-        else i++;
++  function handleEvent(nextButtons, ev) {
++    var nextX = mouse.x(ev)
++    var nextY = mouse.y(ev)
++    if('buttons' in ev) {
++      nextButtons = ev.buttons|0
++    }
++    if(nextButtons !== buttonState ||
++       nextX !== x ||
++       nextY !== y ||
++       updateMods(ev)) {
++      buttonState = nextButtons|0
++      x = nextX||0
++      y = nextY||0
++      callback && callback(buttonState, x, y, mods)
+     }
++  }
+ 
+-    if (i === 0) {
+-        return parameters.stops[i][1];
++  function clearState(ev) {
++    handleEvent(0, ev)
++  }
+ 
+-    } else if (i === parameters.stops.length) {
+-        return parameters.stops[i - 1][1];
++  function handleBlur() {
++    if(buttonState ||
++      x ||
++      y ||
++      mods.shift ||
++      mods.alt ||
++      mods.meta ||
++      mods.control) {
+ 
+-    } else {
+-        return interpolate(
+-            input,
+-            base,
+-            parameters.stops[i - 1][0],
+-            parameters.stops[i][0],
+-            parameters.stops[i - 1][1],
+-            parameters.stops[i][1]
+-        );
++      x = y = 0
++      buttonState = 0
++      mods.shift = mods.alt = mods.control = mods.meta = false
++      callback && callback(0, 0, 0, mods)
+     }
+-}
+-
++  }
+ 
+-function interpolate(input, base, inputLower, inputUpper, outputLower, outputUpper) {
+-    if (typeof outputLower === 'function') {
+-        return function() {
+-            var evaluatedLower = outputLower.apply(undefined, arguments);
+-            var evaluatedUpper = outputUpper.apply(undefined, arguments);
+-            return interpolate(input, base, inputLower, inputUpper, evaluatedLower, evaluatedUpper);
+-        };
+-    } else if (outputLower.length) {
+-        return interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper);
+-    } else {
+-        return interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper);
++  function handleMods(ev) {
++    if(updateMods(ev)) {
++      callback && callback(buttonState, x, y, mods)
+     }
+-}
+-
+-function interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper) {
+-    var difference =  inputUpper - inputLower;
+-    var progress = input - inputLower;
++  }
+ 
+-    var ratio;
+-    if (base === 1) {
+-        ratio = progress / difference;
++  function handleMouseMove(ev) {
++    if(mouse.buttons(ev) === 0) {
++      handleEvent(0, ev)
+     } else {
+-        ratio = (Math.pow(base, progress) - 1) / (Math.pow(base, difference) - 1);
+-    }
+-
+-    return (outputLower * (1 - ratio)) + (outputUpper * ratio);
+-}
+-
+-function interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper) {
+-    var output = [];
+-    for (var i = 0; i < outputLower.length; i++) {
+-        output[i] = interpolateNumber(input, base, inputLower, inputUpper, outputLower[i], outputUpper[i]);
++      handleEvent(buttonState, ev)
+     }
+-    return output;
+-}
+-
+-function isFunctionDefinition(value) {
+-    return typeof value === 'object' && value.stops;
+-}
+-
+-
+-module.exports.isFunctionDefinition = isFunctionDefinition;
+-
+-module.exports.interpolated = function(parameters) {
+-    return createFunction(parameters, 'exponential');
+-};
++  }
+ 
+-module.exports['piecewise-constant'] = function(parameters) {
+-    return createFunction(parameters, 'interval');
+-};
++  function handleMouseDown(ev) {
++    handleEvent(buttonState | mouse.buttons(ev), ev)
++  }
+ 
+-},{}],375:[function(require,module,exports){
+-'use strict';
++  function handleMouseUp(ev) {
++    handleEvent(buttonState & ~mouse.buttons(ev), ev)
++  }
+ 
+-if (typeof module !== 'undefined' && module.exports) {
+-    module.exports = isSupported;
+-} else if (window) {
+-    window.mapboxgl = window.mapboxgl || {};
+-    window.mapboxgl.supported = isSupported;
+-}
++  function attachListeners() {
++    if(attached) {
++      return
++    }
++    attached = true
+ 
+-/**
+- * Test whether the current browser supports Mapbox GL JS
+- * @param {Object} options
+- * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
+- *   if the performance of Mapbox GL JS would be dramatically worse than
+- *   expected (i.e. a software renderer is would be used)
+- * @return {boolean}
+- */
+-function isSupported(options) {
+-    return !!(
+-        isBrowser() &&
+-        isArraySupported() &&
+-        isFunctionSupported() &&
+-        isObjectSupported() &&
+-        isJSONSupported() &&
+-        isWorkerSupported() &&
+-        isWebGLSupportedCached(options && options.failIfMajorPerformanceCaveat)
+-    );
+-}
++    element.addEventListener('mousemove', handleMouseMove)
+ 
+-function isBrowser() {
+-    return typeof window !== 'undefined' && typeof document !== 'undefined';
+-}
++    element.addEventListener('mousedown', handleMouseDown)
+ 
+-function isArraySupported() {
+-    return (
+-        Array.prototype &&
+-        Array.prototype.every &&
+-        Array.prototype.filter &&
+-        Array.prototype.forEach &&
+-        Array.prototype.indexOf &&
+-        Array.prototype.lastIndexOf &&
+-        Array.prototype.map &&
+-        Array.prototype.some &&
+-        Array.prototype.reduce &&
+-        Array.prototype.reduceRight &&
+-        Array.isArray
+-    );
+-}
++    element.addEventListener('mouseup', handleMouseUp)
+ 
+-function isFunctionSupported() {
+-    return Function.prototype && Function.prototype.bind;
+-}
++    element.addEventListener('mouseleave', clearState)
++    element.addEventListener('mouseenter', clearState)
++    element.addEventListener('mouseout', clearState)
++    element.addEventListener('mouseover', clearState)
+ 
+-function isObjectSupported() {
+-    return (
+-        Object.keys &&
+-        Object.create &&
+-        Object.getPrototypeOf &&
+-        Object.getOwnPropertyNames &&
+-        Object.isSealed &&
+-        Object.isFrozen &&
+-        Object.isExtensible &&
+-        Object.getOwnPropertyDescriptor &&
+-        Object.defineProperty &&
+-        Object.defineProperties &&
+-        Object.seal &&
+-        Object.freeze &&
+-        Object.preventExtensions
+-    );
+-}
++    element.addEventListener('blur', handleBlur)
+ 
+-function isJSONSupported() {
+-    return 'JSON' in window && 'parse' in JSON && 'stringify' in JSON;
+-}
++    element.addEventListener('keyup', handleMods)
++    element.addEventListener('keydown', handleMods)
++    element.addEventListener('keypress', handleMods)
+ 
+-function isWorkerSupported() {
+-    return 'Worker' in window;
+-}
++    if(element !== window) {
++      window.addEventListener('blur', handleBlur)
+ 
+-var isWebGLSupportedCache = {};
+-function isWebGLSupportedCached(failIfMajorPerformanceCaveat) {
++      window.addEventListener('keyup', handleMods)
++      window.addEventListener('keydown', handleMods)
++      window.addEventListener('keypress', handleMods)
++    }
++  }
+ 
+-    if (isWebGLSupportedCache[failIfMajorPerformanceCaveat] === undefined) {
+-        isWebGLSupportedCache[failIfMajorPerformanceCaveat] = isWebGLSupported(failIfMajorPerformanceCaveat);
++  function detachListeners() {
++    if(!attached) {
++      return
+     }
++    attached = false
+ 
+-    return isWebGLSupportedCache[failIfMajorPerformanceCaveat];
+-}
++    element.removeEventListener('mousemove', handleMouseMove)
+ 
+-isSupported.webGLContextAttributes = {
+-    antialias: false,
+-    alpha: true,
+-    stencil: true,
+-    depth: true
+-};
++    element.removeEventListener('mousedown', handleMouseDown)
+ 
+-function isWebGLSupported(failIfMajorPerformanceCaveat) {
++    element.removeEventListener('mouseup', handleMouseUp)
+ 
+-    var canvas = document.createElement('canvas');
++    element.removeEventListener('mouseleave', clearState)
++    element.removeEventListener('mouseenter', clearState)
++    element.removeEventListener('mouseout', clearState)
++    element.removeEventListener('mouseover', clearState)
+ 
+-    var attributes = Object.create(isSupported.webGLContextAttributes);
+-    attributes.failIfMajorPerformanceCaveat = failIfMajorPerformanceCaveat;
++    element.removeEventListener('blur', handleBlur)
+ 
+-    if (canvas.probablySupportsContext) {
+-        return (
+-            canvas.probablySupportsContext('webgl', attributes) ||
+-            canvas.probablySupportsContext('experimental-webgl', attributes)
+-        );
++    element.removeEventListener('keyup', handleMods)
++    element.removeEventListener('keydown', handleMods)
++    element.removeEventListener('keypress', handleMods)
+ 
+-    } else if (canvas.supportsContext) {
+-        return (
+-            canvas.supportsContext('webgl', attributes) ||
+-            canvas.supportsContext('experimental-webgl', attributes)
+-        );
++    if(element !== window) {
++      window.removeEventListener('blur', handleBlur)
+ 
+-    } else {
+-        return (
+-            canvas.getContext('webgl', attributes) ||
+-            canvas.getContext('experimental-webgl', attributes)
+-        );
++      window.removeEventListener('keyup', handleMods)
++      window.removeEventListener('keydown', handleMods)
++      window.removeEventListener('keypress', handleMods)
+     }
+-}
++  }
+ 
+-},{}],376:[function(require,module,exports){
+-'use strict';
++  //Attach listeners
++  attachListeners()
+ 
+-var format = require('util').format;
++  var result = {
++    element: element
++  }
+ 
+-function ValidationError(key, value /*, message, ...*/) {
+-    this.message = (
+-        (key ? key + ': ' : '') +
+-        format.apply(format, Array.prototype.slice.call(arguments, 2))
+-    );
++  Object.defineProperties(result, {
++    enabled: {
++      get: function() { return attached },
++      set: function(f) {
++        if(f) {
++          attachListeners()
++        } else {
++          detachListeners
++        }
++      },
++      enumerable: true
++    },
++    buttons: {
++      get: function() { return buttonState },
++      enumerable: true
++    },
++    x: {
++      get: function() { return x },
++      enumerable: true
++    },
++    y: {
++      get: function() { return y },
++      enumerable: true
++    },
++    mods: {
++      get: function() { return mods },
++      enumerable: true
++    }
++  })
+ 
+-    if (value !== null && value !== undefined && value.__line__) {
+-        this.line = value.__line__;
++  return result
++}
++
++},{"mouse-event":372}],372:[function(require,module,exports){
++'use strict'
++
++function mouseButtons(ev) {
++  if(typeof ev === 'object') {
++    if('buttons' in ev) {
++      return ev.buttons
++    } else if('which' in ev) {
++      var b = ev.which
++      if(b === 2) {
++        return 4
++      } else if(b === 3) {
++        return 2
++      } else if(b > 0) {
++        return 1<<(b-1)
++      }
++    } else if('button' in ev) {
++      var b = ev.button
++      if(b === 1) {
++        return 4
++      } else if(b === 2) {
++        return 2
++      } else if(b >= 0) {
++        return 1<<b
++      }
+     }
++  }
++  return 0
+ }
++exports.buttons = mouseButtons
+ 
+-module.exports = ValidationError;
++function mouseElement(ev) {
++  return ev.target || ev.srcElement || window
++}
++exports.element = mouseElement
+ 
+-},{"util":62}],377:[function(require,module,exports){
+-'use strict';
++function mouseRelativeX(ev) {
++  if(typeof ev === 'object') {
++    if('offsetX' in ev) {
++      return ev.offsetX
++    }
++    var target = mouseElement(ev)
++    var bounds = target.getBoundingClientRect()
++    return ev.clientX - bounds.left
++  }
++  return 0
++}
++exports.x = mouseRelativeX
+ 
+-module.exports = function (output) {
+-    for (var i = 1; i < arguments.length; i++) {
+-        var input = arguments[i];
+-        for (var k in input) {
+-            output[k] = input[k];
+-        }
++function mouseRelativeY(ev) {
++  if(typeof ev === 'object') {
++    if('offsetY' in ev) {
++      return ev.offsetY
+     }
+-    return output;
+-};
++    var target = mouseElement(ev)
++    var bounds = target.getBoundingClientRect()
++    return ev.clientY - bounds.top
++  }
++  return 0
++}
++exports.y = mouseRelativeY
+ 
+-},{}],378:[function(require,module,exports){
+-'use strict';
++},{}],373:[function(require,module,exports){
++'use strict'
+ 
+-module.exports = function getType(val) {
+-    if (val instanceof Number) {
+-        return 'number';
+-    } else if (val instanceof String) {
+-        return 'string';
+-    } else if (val instanceof Boolean) {
+-        return 'boolean';
+-    } else if (Array.isArray(val)) {
+-        return 'array';
+-    } else if (val === null) {
+-        return 'null';
+-    } else {
+-        return typeof val;
+-    }
+-};
++var toPX = require('to-px')
+ 
+-},{}],379:[function(require,module,exports){
+-'use strict';
++module.exports = mouseWheelListen
+ 
+-// Turn jsonlint-lines-primitives objects into primitive objects
+-module.exports = function unbundle(value) {
+-    if (value instanceof Number || value instanceof String || value instanceof Boolean) {
+-        return value.valueOf();
+-    } else {
+-        return value;
++function mouseWheelListen(element, callback, noScroll) {
++  if(typeof element === 'function') {
++    noScroll = !!callback
++    callback = element
++    element = window
++  }
++  var lineHeight = toPX('ex', element)
++  var listener = function(ev) {
++    if(noScroll) {
++      ev.preventDefault()
+     }
+-};
++    var dx = ev.deltaX || 0
++    var dy = ev.deltaY || 0
++    var dz = ev.deltaZ || 0
++    var mode = ev.deltaMode
++    var scale = 1
++    switch(mode) {
++      case 1:
++        scale = lineHeight
++      break
++      case 2:
++        scale = window.innerHeight
++      break
++    }
++    dx *= scale
++    dy *= scale
++    dz *= scale
++    if(dx || dy || dz) {
++      return callback(dx, dy, dz, ev)
++    }
++  }
++  element.addEventListener('wheel', listener)
++  return listener
++}
+ 
+-},{}],380:[function(require,module,exports){
+-'use strict';
++},{"to-px":443}],374:[function(require,module,exports){
++"use strict"
+ 
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var extend = require('../util/extend');
++var pool = require("typedarray-pool")
+ 
+-// Main recursive validation function. Tracks:
+-//
+-// - key: string representing location of validation in style tree. Used only
+-//   for more informative error reporting.
+-// - value: current value from style being evaluated. May be anything from a
+-//   high level object that needs to be descended into deeper or a simple
+-//   scalar value.
+-// - valueSpec: current spec being evaluated. Tracks value.
++module.exports = createSurfaceExtractor
+ 
+-module.exports = function validate(options) {
++//Helper macros
++function array(i) {
++  return "a" + i
++}
++function data(i) {
++  return "d" + i
++}
++function cube(i,bitmask) {
++  return "c" + i + "_" + bitmask
++}
++function shape(i) {
++  return "s" + i
++}
++function stride(i,j) {
++  return "t" + i + "_" + j
++}
++function offset(i) {
++  return "o" + i
++}
++function scalar(i) {
++  return "x" + i
++}
++function pointer(i) {
++  return "p" + i
++}
++function delta(i,bitmask) {
++  return "d" + i + "_" + bitmask
++}
++function index(i) {
++  return "i" + i
++}
++function step(i,j) {
++  return "u" + i + "_" + j
++}
++function pcube(bitmask) {
++  return "b" + bitmask
++}
++function qcube(bitmask) {
++  return "y" + bitmask
++}
++function pdelta(bitmask) {
++  return "e" + bitmask
++}
++function vert(i) {
++  return "v" + i
++}
++var VERTEX_IDS = "V"
++var PHASES = "P"
++var VERTEX_COUNT = "N"
++var POOL_SIZE = "Q"
++var POINTER = "X"
++var TEMPORARY = "T"
+ 
+-    var validateFunction = require('./validate_function');
+-    var validateObject = require('./validate_object');
+-    var VALIDATORS = {
+-        '*': function() {
+-            return [];
+-        },
+-        'array': require('./validate_array'),
+-        'boolean': require('./validate_boolean'),
+-        'number': require('./validate_number'),
+-        'color': require('./validate_color'),
+-        'constants': require('./validate_constants'),
+-        'enum': require('./validate_enum'),
+-        'filter': require('./validate_filter'),
+-        'function': require('./validate_function'),
+-        'layer': require('./validate_layer'),
+-        'object': require('./validate_object'),
+-        'source': require('./validate_source'),
+-        'string': require('./validate_string')
+-    };
++function permBitmask(dimension, mask, order) {
++  var r = 0
++  for(var i=0; i<dimension; ++i) {
++    if(mask & (1<<i)) {
++      r |= (1<<order[i])
++    }
++  }
++  return r
++}
+ 
+-    var value = options.value;
+-    var valueSpec = options.valueSpec;
+-    var key = options.key;
+-    var styleSpec = options.styleSpec;
+-    var style = options.style;
++//Generates the surface procedure
++function compileSurfaceProcedure(vertexFunc, faceFunc, phaseFunc, scalarArgs, order, typesig) {
++  var arrayArgs = typesig.length
++  var dimension = order.length
+ 
+-    if (getType(value) === 'string' && value[0] === '@') {
+-        if (styleSpec.$version > 7) {
+-            return [new ValidationError(key, value, 'constants have been deprecated as of v8')];
+-        }
+-        if (!(value in style.constants)) {
+-            return [new ValidationError(key, value, 'constant "%s" not found', value)];
+-        }
+-        options = extend({}, options, { value: style.constants[value] });
+-    }
++  if(dimension < 2) {
++    throw new Error("ndarray-extract-contour: Dimension must be at least 2")
++  }
+ 
+-    if (valueSpec.function && getType(value) === 'object') {
+-        return validateFunction(options);
++  var funcName = "extractContour" + order.join("_")
++  var code = []
++  var vars = []
++  var args = []
+ 
+-    } else if (valueSpec.type && VALIDATORS[valueSpec.type]) {
+-        return VALIDATORS[valueSpec.type](options);
++  //Assemble arguments
++  for(var i=0; i<arrayArgs; ++i) {
++    args.push(array(i))  
++  }
++  for(var i=0; i<scalarArgs; ++i) {
++    args.push(scalar(i))
++  }
+ 
+-    } else {
+-        return validateObject(extend({}, options, {
+-            valueSpec: valueSpec.type ? styleSpec[valueSpec.type] : valueSpec
+-        }));
++  //Shape
++  for(var i=0; i<dimension; ++i) {
++    vars.push(shape(i) + "=" + array(0) + ".shape[" + i + "]|0")
++  }
++  //Data, stride, offset pointers
++  for(var i=0; i<arrayArgs; ++i) {
++    vars.push(data(i) + "=" + array(i) + ".data",
++              offset(i) + "=" + array(i) + ".offset|0")
++    for(var j=0; j<dimension; ++j) {
++      vars.push(stride(i,j) + "=" + array(i) + ".stride[" + j + "]|0")
+     }
+-};
+-
+-},{"../error/validation_error":376,"../util/extend":377,"../util/get_type":378,"./validate_array":381,"./validate_boolean":382,"./validate_color":383,"./validate_constants":384,"./validate_enum":385,"./validate_filter":386,"./validate_function":387,"./validate_layer":389,"./validate_number":391,"./validate_object":392,"./validate_source":394,"./validate_string":395}],381:[function(require,module,exports){
+-'use strict';
++  }
++  //Pointer, delta and cube variables
++  for(var i=0; i<arrayArgs; ++i) {
++    vars.push(pointer(i) + "=" + offset(i))
++    vars.push(cube(i,0))
++    for(var j=1; j<(1<<dimension); ++j) {
++      var ptrStr = []
++      for(var k=0; k<dimension; ++k) {
++        if(j & (1<<k)) {
++          ptrStr.push("-" + stride(i,k))
++        }
++      }
++      vars.push(delta(i,j) + "=(" + ptrStr.join("") + ")|0")
++      vars.push(cube(i,j) + "=0")
++    }
++  }
++  //Create step variables
++  for(var i=0; i<arrayArgs; ++i) {
++    for(var j=0; j<dimension; ++j) {
++      var stepVal = [ stride(i,order[j]) ]
++      if(j > 0) {
++        stepVal.push(stride(i, order[j-1]) + "*" + shape(order[j-1]) )
++      }
++      vars.push(step(i,order[j]) + "=(" + stepVal.join("-") + ")|0")
++    }
++  }
++  //Create index variables
++  for(var i=0; i<dimension; ++i) {
++    vars.push(index(i) + "=0")
++  }
++  //Vertex count
++  vars.push(VERTEX_COUNT + "=0")
++  //Compute pool size, initialize pool step
++  var sizeVariable = ["2"]
++  for(var i=dimension-2; i>=0; --i) {
++    sizeVariable.push(shape(order[i]))
++  }
++  //Previous phases and vertex_ids
++  vars.push(POOL_SIZE + "=(" + sizeVariable.join("*") + ")|0",
++            PHASES + "=mallocUint32(" + POOL_SIZE + ")",
++            VERTEX_IDS + "=mallocUint32(" + POOL_SIZE + ")",
++            POINTER + "=0")
++  //Create cube variables for phases
++  vars.push(pcube(0) + "=0")
++  for(var j=1; j<(1<<dimension); ++j) {
++    var cubeDelta = []
++    var cubeStep = [ ]
++    for(var k=0; k<dimension; ++k) {
++      if(j & (1<<k)) {
++        if(cubeStep.length === 0) {
++          cubeDelta.push("1")
++        } else {
++          cubeDelta.unshift(cubeStep.join("*"))
++        }
++      }
++      cubeStep.push(shape(order[k]))
++    }
++    var signFlag = ""
++    if(cubeDelta[0].indexOf(shape(order[dimension-2])) < 0) {
++      signFlag = "-"
++    }
++    var jperm = permBitmask(dimension, j, order)
++    vars.push(pdelta(jperm) + "=(-" + cubeDelta.join("-") + ")|0",
++              qcube(jperm) + "=(" + signFlag + cubeDelta.join("-") + ")|0",
++              pcube(jperm) + "=0")
++  }
++  vars.push(vert(0) + "=0", TEMPORARY + "=0")
+ 
+-var getType = require('../util/get_type');
+-var validate = require('./validate');
+-var ValidationError = require('../error/validation_error');
++  function forLoopBegin(i, start) {
++    code.push("for(", index(order[i]), "=", start, ";",
++      index(order[i]), "<", shape(order[i]), ";",
++      "++", index(order[i]), "){")
++  }
+ 
+-module.exports = function validateArray(options) {
+-    var array = options.value;
+-    var arraySpec = options.valueSpec;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var key = options.key;
+-    var validateArrayElement = options.arrayElementValidator || validate;
++  function forLoopEnd(i) {
++    for(var j=0; j<arrayArgs; ++j) {
++      code.push(pointer(j), "+=", step(j,order[i]), ";")
++    }
++    code.push("}")
++  }
+ 
+-    if (getType(array) !== 'array') {
+-        return [new ValidationError(key, array, 'array expected, %s found', getType(array))];
++  function fillEmptySlice(k) {
++    for(var i=k-1; i>=0; --i) {
++      forLoopBegin(i, 0) 
++    }
++    var phaseFuncArgs = []
++    for(var i=0; i<arrayArgs; ++i) {
++      if(typesig[i]) {
++        phaseFuncArgs.push(data(i) + ".get(" + pointer(i) + ")")
++      } else {
++        phaseFuncArgs.push(data(i) + "[" + pointer(i) + "]")
++      }
+     }
+-
+-    if (arraySpec.length && array.length !== arraySpec.length) {
+-        return [new ValidationError(key, array, 'array length %d expected, length %d found', arraySpec.length, array.length)];
++    for(var i=0; i<scalarArgs; ++i) {
++      phaseFuncArgs.push(scalar(i))
+     }
+-
+-    if (arraySpec['min-length'] && array.length < arraySpec['min-length']) {
+-        return [new ValidationError(key, array, 'array length at least %d expected, length %d found', arraySpec['min-length'], array.length)];
++    code.push(PHASES, "[", POINTER, "++]=phase(", phaseFuncArgs.join(), ");")
++    for(var i=0; i<k; ++i) {
++      forLoopEnd(i)
+     }
+-
+-    var arrayElementSpec = {
+-        "type": arraySpec.value
+-    };
+-
+-    if (styleSpec.$version < 7) {
+-        arrayElementSpec.function = arraySpec.function;
++    for(var j=0; j<arrayArgs; ++j) {
++      code.push(pointer(j), "+=", step(j,order[k]), ";")
+     }
++  }
+ 
+-    if (getType(arraySpec.value) === 'object') {
+-        arrayElementSpec = arraySpec.value;
++  function processGridCell(mask) {
++    //Read in local data
++    for(var i=0; i<arrayArgs; ++i) {
++      if(typesig[i]) {
++        code.push(cube(i,0), "=", data(i), ".get(", pointer(i), ");")
++      } else {
++        code.push(cube(i,0), "=", data(i), "[", pointer(i), "];")
++      }
+     }
+ 
+-    var errors = [];
+-    for (var i = 0; i < array.length; i++) {
+-        errors = errors.concat(validateArrayElement({
+-            array: array,
+-            arrayIndex: i,
+-            value: array[i],
+-            valueSpec: arrayElementSpec,
+-            style: style,
+-            styleSpec: styleSpec,
+-            key: key + '[' + i + ']'
+-        }));
++    //Read in phase
++    var phaseFuncArgs = []
++    for(var i=0; i<arrayArgs; ++i) {
++      phaseFuncArgs.push(cube(i,0))
+     }
+-    return errors;
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378,"./validate":380}],382:[function(require,module,exports){
+-'use strict';
+-
+-var getType = require('../util/get_type');
+-var ValidationError = require('../error/validation_error');
+-
+-module.exports = function validateBoolean(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var type = getType(value);
+-
+-    if (type !== 'boolean') {
+-        return [new ValidationError(key, value, 'boolean expected, %s found', type)];
++    for(var i=0; i<scalarArgs; ++i) {
++      phaseFuncArgs.push(scalar(i))
+     }
+-
+-    return [];
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378}],383:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var parseCSSColor = require('csscolorparser').parseCSSColor;
+-
+-module.exports = function validateColor(options) {
+-    var key = options.key;
+-    var value = options.value;
+-    var type = getType(value);
+-
+-    if (type !== 'string') {
+-        return [new ValidationError(key, value, 'color expected, %s found', type)];
++    
++    code.push(pcube(0), "=", PHASES, "[", POINTER, "]=phase(", phaseFuncArgs.join(), ");")
++    
++    //Read in other cube data
++    for(var j=1; j<(1<<dimension); ++j) {
++      code.push(pcube(j), "=", PHASES, "[", POINTER, "+", pdelta(j), "];")
+     }
+ 
+-    if (parseCSSColor(value) === null) {
+-        return [new ValidationError(key, value, 'color expected, "%s" found', value)];
++    //Check for boundary crossing
++    var vertexPredicate = []
++    for(var j=1; j<(1<<dimension); ++j) {
++      vertexPredicate.push("(" + pcube(0) + "!==" + pcube(j) + ")")
+     }
++    code.push("if(", vertexPredicate.join("||"), "){")
+ 
+-    return [];
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378,"csscolorparser":351}],384:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
++    //Read in boundary data
++    var vertexArgs = []
++    for(var i=0; i<dimension; ++i) {
++      vertexArgs.push(index(i))
++    }
++    for(var i=0; i<arrayArgs; ++i) {
++      vertexArgs.push(cube(i,0))
++      for(var j=1; j<(1<<dimension); ++j) {
++        if(typesig[i]) {
++          code.push(cube(i,j), "=", data(i), ".get(", pointer(i), "+", delta(i,j), ");")
++        } else {
++          code.push(cube(i,j), "=", data(i), "[", pointer(i), "+", delta(i,j), "];")
++        }
++        vertexArgs.push(cube(i,j))
++      }
++    }
++    for(var i=0; i<(1<<dimension); ++i) {
++      vertexArgs.push(pcube(i))
++    }
++    for(var i=0; i<scalarArgs; ++i) {
++      vertexArgs.push(scalar(i))
++    }
+ 
+-module.exports = function validateConstants(options) {
+-    var key = options.key;
+-    var constants = options.value;
+-    var styleSpec = options.styleSpec;
++    //Generate vertex
++    code.push("vertex(", vertexArgs.join(), ");",
++      vert(0), "=", VERTEX_IDS, "[", POINTER, "]=", VERTEX_COUNT, "++;")
+ 
+-    if (styleSpec.$version > 7) {
+-        if (constants) {
+-            return [new ValidationError(key, constants, 'constants have been deprecated as of v8')];
+-        } else {
+-            return [];
++    //Check for face crossings
++    var base = (1<<dimension)-1
++    var corner = pcube(base)
++    for(var j=0; j<dimension; ++j) {
++      if((mask & ~(1<<j))===0) {
++        //Check face
++        var subset = base^(1<<j)
++        var edge = pcube(subset)
++        var faceArgs = [ ]
++        for(var k=subset; k>0; k=(k-1)&subset) {
++          faceArgs.push(VERTEX_IDS + "[" + POINTER + "+" + pdelta(k) + "]")
+         }
+-    } else {
+-        var type = getType(constants);
+-        if (type !== 'object') {
+-            return [new ValidationError(key, constants, 'object expected, %s found', type)];
++        faceArgs.push(vert(0))
++        for(var k=0; k<arrayArgs; ++k) {
++          if(j&1) {
++            faceArgs.push(cube(k,base), cube(k,subset))
++          } else {
++            faceArgs.push(cube(k,subset), cube(k,base))
++          }
+         }
+-
+-        var errors = [];
+-        for (var constantName in constants) {
+-            if (constantName[0] !== '@') {
+-                errors.push(new ValidationError(key + '.' + constantName, constants[constantName], 'constants must start with "@"'));
+-            }
++        if(j&1) {
++          faceArgs.push(corner, edge)
++        } else {
++          faceArgs.push(edge, corner)
+         }
+-        return errors;
++        for(var k=0; k<scalarArgs; ++k) {
++          faceArgs.push(scalar(k))
++        }
++        code.push("if(", corner, "!==", edge, "){",
++          "face(", faceArgs.join(), ")}")
++      }
+     }
++    
++    //Increment pointer, close off if statement
++    code.push("}",
++      POINTER, "+=1;")
++  }
+ 
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378}],385:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var unbundle = require('../util/unbundle_jsonlint');
+-
+-module.exports = function validateEnum(options) {
+-    var key = options.key;
+-    var value = options.value;
+-    var valueSpec = options.valueSpec;
+-    var errors = [];
+-
+-    if (valueSpec.values.indexOf(unbundle(value)) === -1) {
+-        errors.push(new ValidationError(key, value, 'expected one of [%s], %s found', valueSpec.values.join(', '), value));
++  function flip() {
++    for(var j=1; j<(1<<dimension); ++j) {
++      code.push(TEMPORARY, "=", pdelta(j), ";",
++                pdelta(j), "=", qcube(j), ";",
++                qcube(j), "=", TEMPORARY, ";")
+     }
+-    return errors;
+-};
+-
+-},{"../error/validation_error":376,"../util/unbundle_jsonlint":379}],386:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var validateEnum = require('./validate_enum');
+-var getType = require('../util/get_type');
+-var unbundle = require('../util/unbundle_jsonlint');
+-
+-module.exports = function validateFilter(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var styleSpec = options.styleSpec;
+-    var type;
+-
+-    var errors = [];
++  }
+ 
+-    if (getType(value) !== 'array') {
+-        return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
++  function createLoop(i, mask) {
++    if(i < 0) {
++      processGridCell(mask)
++      return
+     }
++    fillEmptySlice(i)
++    code.push("if(", shape(order[i]), ">0){",
++      index(order[i]), "=1;")
++    createLoop(i-1, mask|(1<<order[i]))
+ 
+-    if (value.length < 1) {
+-        return [new ValidationError(key, value, 'filter array must have at least 1 element')];
++    for(var j=0; j<arrayArgs; ++j) {
++      code.push(pointer(j), "+=", step(j,order[i]), ";")
+     }
+-
+-    errors = errors.concat(validateEnum({
+-        key: key + '[0]',
+-        value: value[0],
+-        valueSpec: styleSpec.filter_operator,
+-        style: options.style,
+-        styleSpec: options.styleSpec
+-    }));
+-
+-    switch (unbundle(value[0])) {
+-        case '<':
+-        case '<=':
+-        case '>':
+-        case '>=':
+-            if (value.length >= 2 && value[1] == '$type') {
+-                errors.push(new ValidationError(key, value, '"$type" cannot be use with operator "%s"', value[0]));
+-            }
+-        /* falls through */
+-        case '==':
+-        case '!=':
+-            if (value.length != 3) {
+-                errors.push(new ValidationError(key, value, 'filter array for operator "%s" must have 3 elements', value[0]));
+-            }
+-        /* falls through */
+-        case 'in':
+-        case '!in':
+-            if (value.length >= 2) {
+-                type = getType(value[1]);
+-                if (type !== 'string') {
+-                    errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
+-                } else if (value[1][0] === '@') {
+-                    errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
+-                }
+-            }
+-            for (var i = 2; i < value.length; i++) {
+-                type = getType(value[i]);
+-                if (value[1] == '$type') {
+-                    errors = errors.concat(validateEnum({
+-                        key: key + '[' + i + ']',
+-                        value: value[i],
+-                        valueSpec: styleSpec.geometry_type,
+-                        style: options.style,
+-                        styleSpec: options.styleSpec
+-                    }));
+-                } else if (type === 'string' && value[i][0] === '@') {
+-                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'filter value cannot be a constant'));
+-                } else if (type !== 'string' && type !== 'number' && type !== 'boolean') {
+-                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'string, number, or boolean expected, %s found', type));
+-                }
+-            }
+-            break;
+-
+-        case 'any':
+-        case 'all':
+-        case 'none':
+-            for (i = 1; i < value.length; i++) {
+-                errors = errors.concat(validateFilter({
+-                    key: key + '[' + i + ']',
+-                    value: value[i],
+-                    style: options.style,
+-                    styleSpec: options.styleSpec
+-                }));
+-            }
+-            break;
+-
+-        case 'has':
+-        case '!has':
+-            type = getType(value[1]);
+-            if (value.length !== 2) {
+-                errors.push(new ValidationError(key, value, 'filter array for "%s" operator must have 2 elements', value[0]));
+-            } else if (type !== 'string') {
+-                errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
+-            } else if (value[1][0] === '@') {
+-                errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
+-            }
+-            break;
+-
++    if(i === dimension-1) {
++      code.push(POINTER, "=0;")
++      flip()
+     }
+-
+-    return errors;
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378,"../util/unbundle_jsonlint":379,"./validate_enum":385}],387:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var validate = require('./validate');
+-var validateObject = require('./validate_object');
+-var validateArray = require('./validate_array');
+-var validateNumber = require('./validate_number');
+-
+-module.exports = function validateFunction(options) {
+-    var originalValueSpec = options.valueSpec;
+-    var originalValue = options.value;
+-
+-    var stopKeyType;
+-
+-    return validateObject({
+-        key: options.key,
+-        value: options.value,
+-        valueSpec: options.styleSpec.function,
+-        style: options.style,
+-        styleSpec: options.styleSpec,
+-        objectElementValidators: { stops: validateFunctionStops }
+-    });
+-
+-    function validateFunctionStops(options) {
+-        var errors = [];
+-        var value = options.value;
+-
+-        errors = errors.concat(validateArray({
+-            key: options.key,
+-            value: value,
+-            valueSpec: options.valueSpec,
+-            style: options.style,
+-            styleSpec: options.styleSpec,
+-            arrayElementValidator: validateFunctionStop
+-        }));
+-
+-        if (getType(value) === 'array' && value.length === 0) {
+-            errors.push(new ValidationError(options.key, value, 'array must have at least one stop'));
+-        }
+-
+-        return errors;
++    forLoopBegin(i, 2)
++    createLoop(i-1, mask)
++    if(i === dimension-1) {
++      code.push("if(", index(order[dimension-1]), "&1){",
++        POINTER, "=0;}")
++      flip()
+     }
++    forLoopEnd(i)
++    code.push("}")
++  }
+ 
+-    function validateFunctionStop(options) {
+-        var errors = [];
+-        var value = options.value;
+-        var key = options.key;
+-
+-        if (getType(value) !== 'array') {
+-            return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
+-        }
+-
+-        if (value.length !== 2) {
+-            return [new ValidationError(key, value, 'array length %d expected, length %d found', 2, value.length)];
+-        }
+-
+-        var type = getType(value[0]);
+-        if (!stopKeyType) stopKeyType = type;
+-        if (type !== stopKeyType) {
+-            return [new ValidationError(key, value, '%s stop key type must match previous stop key type %s', type, stopKeyType)];
+-        }
+-
+-        if (type === 'object') {
+-            if (value[0].zoom === undefined) {
+-                return [new ValidationError(key, value, 'object stop key must have zoom')];
+-            }
+-            if (value[0].value === undefined) {
+-                return [new ValidationError(key, value, 'object stop key must have value')];
+-            }
+-            errors = errors.concat(validateObject({
+-                key: key + '[0]',
+-                value: value[0],
+-                valueSpec: { zoom: {} },
+-                style: options.style,
+-                styleSpec: options.styleSpec,
+-                objectElementValidators: { zoom: validateNumber, value: validateValue }
+-            }));
+-        } else {
+-            var isZoomFunction = !originalValue.property;
+-            errors = errors.concat((isZoomFunction ? validateNumber : validateValue)({
+-                key: key + '[0]',
+-                value: value[0],
+-                valueSpec: {},
+-                style: options.style,
+-                styleSpec: options.styleSpec
+-            }));
+-        }
+-
+-        errors = errors.concat(validate({
+-            key: key + '[1]',
+-            value: value[1],
+-            valueSpec: originalValueSpec,
+-            style: options.style,
+-            styleSpec: options.styleSpec
+-        }));
++  createLoop(dimension-1, 0)
+ 
+-        if (getType(value[0]) === 'number') {
+-            if (originalValueSpec.function === 'piecewise-constant' && value[0] % 1 !== 0) {
+-                errors.push(new ValidationError(key + '[0]', value[0], 'zoom level for piecewise-constant functions must be an integer'));
+-            }
++  //Release scratch memory
++  code.push("freeUint32(", VERTEX_IDS, ");freeUint32(", PHASES, ");")
+ 
+-            if (options.arrayIndex !== 0) {
+-                if (value[0] < options.array[options.arrayIndex - 1][0]) {
+-                    errors.push(new ValidationError(key + '[0]', value[0], 'array stops must appear in ascending order'));
+-                }
+-            }
+-        }
++  //Compile and link procedure
++  var procedureCode = [
++    "'use strict';",
++    "function ", funcName, "(", args.join(), "){",
++      "var ", vars.join(), ";",
++      code.join(""),
++    "}",
++    "return ", funcName ].join("")
+ 
+-        return errors;
+-    }
++  var proc = new Function(
++    "vertex", 
++    "face", 
++    "phase", 
++    "mallocUint32", 
++    "freeUint32",
++    procedureCode)
++  return proc(
++    vertexFunc, 
++    faceFunc, 
++    phaseFunc, 
++    pool.mallocUint32, 
++    pool.freeUint32)
++}
+ 
+-    function validateValue(options) {
+-        var errors = [];
+-        var type = getType(options.value);
+-        if (type !== 'number' && type !== 'string' && type !== 'array') {
+-            errors.push(new ValidationError(options.key, options.value, 'property value must be a number, string or array'));
+-        }
+-        return errors;
++function createSurfaceExtractor(args) {
++  function error(msg) {
++    throw new Error("ndarray-extract-contour: " + msg)
++  }
++  if(typeof args !== "object") {
++    error("Must specify arguments")
++  }
++  var order = args.order
++  if(!Array.isArray(order)) {
++    error("Must specify order")
++  }
++  var arrays = args.arrayArguments||1
++  if(arrays < 1) {
++    error("Must have at least one array argument")
++  }
++  var scalars = args.scalarArguments||0
++  if(scalars < 0) {
++    error("Scalar arg count must be > 0")
++  }
++  if(typeof args.vertex !== "function") {
++    error("Must specify vertex creation function")
++  }
++  if(typeof args.cell !== "function") {
++    error("Must specify cell creation function")
++  }
++  if(typeof args.phase !== "function") {
++    error("Must specify phase function")
++  }
++  var getters = args.getters || []
++  var typesig = new Array(arrays)
++  for(var i=0; i<arrays; ++i) {
++    if(getters.indexOf(i) >= 0) {
++      typesig[i] = true
++    } else {
++      typesig[i] = false
+     }
++  }
++  return compileSurfaceProcedure(
++    args.vertex,
++    args.cell,
++    args.phase,
++    scalars,
++    order,
++    typesig)
++}
++},{"typedarray-pool":449}],375:[function(require,module,exports){
++"use strict"
+ 
+-};
+-
+-},{"../error/validation_error":376,"../util/get_type":378,"./validate":380,"./validate_array":381,"./validate_number":391,"./validate_object":392}],388:[function(require,module,exports){
+-'use strict';
+-
+-var ValidationError = require('../error/validation_error');
+-var validateString = require('./validate_string');
+ 
+-module.exports = function(options) {
+-    var value = options.value;
+-    var key = options.key;
+ 
+-    var errors = validateString(options);
+-    if (errors.length) return errors;
++var fill = require('cwise/lib/wrapper')({"args":["index","array","scalar"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{_inline_1_arg1_=_inline_1_arg2_.apply(void 0,_inline_1_arg0_)}","args":[{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_1_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_1_arg2_","lvalue":false,"rvalue":true,"count":1}],"thisVars":[],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
+ 
+-    if (value.indexOf('{fontstack}') === -1) {
+-        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{fontstack}" token'));
+-    }
++module.exports = function(array, f) {
++  fill(array, f)
++  return array
++}
+ 
+-    if (value.indexOf('{range}') === -1) {
+-        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{range}" token'));
+-    }
++},{"cwise/lib/wrapper":89}],376:[function(require,module,exports){
++'use strict'
+ 
+-    return errors;
+-};
++module.exports      = gradient
+ 
+-},{"../error/validation_error":376,"./validate_string":395}],389:[function(require,module,exports){
+-'use strict';
++var dup             = require('dup')
++var cwiseCompiler   = require('cwise-compiler')
+ 
+-var ValidationError = require('../error/validation_error');
+-var unbundle = require('../util/unbundle_jsonlint');
+-var validateObject = require('./validate_object');
+-var validateFilter = require('./validate_filter');
+-var validatePaintProperty = require('./validate_paint_property');
+-var validateLayoutProperty = require('./validate_layout_property');
+-var extend = require('../util/extend');
++var TEMPLATE_CACHE  = {}
++var GRADIENT_CACHE  = {}
+ 
+-module.exports = function validateLayer(options) {
+-    var errors = [];
++var EmptyProc = {
++  body: "",
++  args: [],
++  thisVars: [],
++  localVars: []
++}
+ 
+-    var layer = options.value;
+-    var key = options.key;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
++var centralDiff = cwiseCompiler({
++  args: [ 'array', 'array', 'array' ],
++  pre: EmptyProc,
++  post: EmptyProc,
++  body: {
++    args: [ {
++      name: 'out', 
++      lvalue: true,
++      rvalue: false,
++      count: 1
++    }, {
++      name: 'left', 
++      lvalue: false,
++      rvalue: true,
++      count: 1
++    }, {
++      name: 'right', 
++      lvalue: false,
++      rvalue: true,
++      count: 1
++    }],
++    body: "out=0.5*(left-right)",
++    thisVars: [],
++    localVars: []
++  },
++  funcName: 'cdiff'
++})
+ 
+-    if (!layer.type && !layer.ref) {
+-        errors.push(new ValidationError(key, layer, 'either "type" or "ref" is required'));
+-    }
+-    var type = unbundle(layer.type);
+-    var ref = unbundle(layer.ref);
++var zeroOut = cwiseCompiler({
++  args: [ 'array' ],
++  pre: EmptyProc,
++  post: EmptyProc,
++  body: {
++    args: [ {
++      name: 'out', 
++      lvalue: true,
++      rvalue: false,
++      count: 1
++    }],
++    body: "out=0",
++    thisVars: [],
++    localVars: []
++  },
++  funcName: 'zero'
++})
+ 
+-    if (layer.id) {
+-        for (var i = 0; i < options.arrayIndex; i++) {
+-            var otherLayer = style.layers[i];
+-            if (unbundle(otherLayer.id) === unbundle(layer.id)) {
+-                errors.push(new ValidationError(key, layer.id, 'duplicate layer id "%s", previously used at line %d', layer.id, otherLayer.id.__line__));
+-            }
++function generateTemplate(d) {
++  if(d in TEMPLATE_CACHE) {
++    return TEMPLATE_CACHE[d]
++  }
++  var code = []
++  for(var i=0; i<d; ++i) {
++    code.push('out', i, 's=0.5*(inp', i, 'l-inp', i, 'r);')
++  }
++  var args = [ 'array' ]
++  var names = ['junk']
++  for(var i=0; i<d; ++i) {
++    args.push('array')
++    names.push('out' + i + 's')
++    var o = dup(d)
++    o[i] = -1
++    args.push({
++      array: 0,
++      offset: o.slice()
++    })
++    o[i] = 1
++    args.push({
++      array: 0,
++      offset: o.slice()
++    })
++    names.push('inp' + i + 'l', 'inp' + i + 'r')
++  }
++  return TEMPLATE_CACHE[d] = cwiseCompiler({
++    args: args,
++    pre:  EmptyProc,
++    post: EmptyProc,
++    body: {
++      body: code.join(''),
++      args: names.map(function(n) {
++        return {
++          name: n,
++          lvalue: n.indexOf('out') === 0,
++          rvalue: n.indexOf('inp') === 0,
++          count: (n!=='junk')|0
+         }
+-    }
+-
+-    if ('ref' in layer) {
+-        ['type', 'source', 'source-layer', 'filter', 'layout'].forEach(function (p) {
+-            if (p in layer) {
+-                errors.push(new ValidationError(key, layer[p], '"%s" is prohibited for ref layers', p));
+-            }
+-        });
++      }),
++      thisVars: [],
++      localVars: []
++    },
++    funcName: 'fdTemplate' + d
++  })
++}
+ 
+-        var parent;
++function generateGradient(boundaryConditions) {
++  var token = boundaryConditions.join()
++  var proc = GRADIENT_CACHE[token]
++  if(proc) {
++    return proc
++  }
+ 
+-        style.layers.forEach(function(layer) {
+-            if (layer.id == ref) parent = layer;
+-        });
++  var d = boundaryConditions.length
++  var code = ['function gradient(dst,src){var s=src.shape.slice();' ]
++  
++  function handleBoundary(facet) {
++    var cod = d - facet.length
+ 
+-        if (!parent) {
+-            errors.push(new ValidationError(key, layer.ref, 'ref layer "%s" not found', ref));
+-        } else if (parent.ref) {
+-            errors.push(new ValidationError(key, layer.ref, 'ref cannot reference another ref layer'));
+-        } else {
+-            type = unbundle(parent.type);
++    var loStr = []
++    var hiStr = []
++    var pickStr = []
++    for(var i=0; i<d; ++i) {
++      if(facet.indexOf(i+1) >= 0) {
++        pickStr.push('0')
++      } else if(facet.indexOf(-(i+1)) >= 0) {
++        pickStr.push('s['+i+']-1')
++      } else {
++        pickStr.push('-1')
++        loStr.push('1')
++        hiStr.push('s['+i+']-2')
++      }
++    }
++    var boundStr = '.lo(' + loStr.join() + ').hi(' + hiStr.join() + ')'
++    if(loStr.length === 0) {
++      boundStr = ''
++    }
++        
++    if(cod > 0) {
++      code.push('if(1') 
++      for(var i=0; i<d; ++i) {
++        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
++          continue
+         }
+-    } else if (type !== 'background') {
+-        if (!layer.source) {
+-            errors.push(new ValidationError(key, layer, 'missing required property "source"'));
+-        } else {
+-            var source = style.sources[layer.source];
+-            if (!source) {
+-                errors.push(new ValidationError(key, layer.source, 'source "%s" not found', layer.source));
+-            } else if (source.type == 'vector' && type == 'raster') {
+-                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a raster source', layer.id));
+-            } else if (source.type == 'raster' && type != 'raster') {
+-                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a vector source', layer.id));
+-            } else if (source.type == 'vector' && !layer['source-layer']) {
+-                errors.push(new ValidationError(key, layer, 'layer "%s" must specify a "source-layer"', layer.id));
+-            }
++        code.push('&&s[', i, ']>2')
++      }
++      code.push('){grad', cod, '(src.pick(', pickStr.join(), ')', boundStr)
++      for(var i=0; i<d; ++i) {
++        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
++          continue
+         }
++        code.push(',dst.pick(', pickStr.join(), ',', i, ')', boundStr)
++      }
++      code.push(');')
+     }
+ 
+-    errors = errors.concat(validateObject({
+-        key: key,
+-        value: layer,
+-        valueSpec: styleSpec.layer,
+-        style: options.style,
+-        styleSpec: options.styleSpec,
+-        objectElementValidators: {
+-            filter: validateFilter,
+-            layout: function(options) {
+-                return validateObject({
+-                    layer: layer,
+-                    key: options.key,
+-                    value: options.value,
+-                    style: options.style,
+-                    styleSpec: options.styleSpec,
+-                    objectElementValidators: {
+-                        '*': function(options) {
+-                            return validateLayoutProperty(extend({layerType: type}, options));
+-                        }
+-                    }
+-                });
+-            },
+-            paint: function(options) {
+-                return validateObject({
+-                    layer: layer,
+-                    key: options.key,
+-                    value: options.value,
+-                    style: options.style,
+-                    styleSpec: options.styleSpec,
+-                    objectElementValidators: {
+-                        '*': function(options) {
+-                            return validatePaintProperty(extend({layerType: type}, options));
+-                        }
+-                    }
+-                });
+-            }
+-        }
+-    }));
++    for(var i=0; i<facet.length; ++i) {
++      var bnd = Math.abs(facet[i])-1
++      var outStr = 'dst.pick(' + pickStr.join() + ',' + bnd + ')' + boundStr
++      switch(boundaryConditions[bnd]) {
+ 
+-    return errors;
+-};
++        case 'clamp':
++          var cPickStr = pickStr.slice()
++          var dPickStr = pickStr.slice()
++          if(facet[i] < 0) {
++            cPickStr[bnd] = 's[' + bnd + ']-2'
++          } else {
++            dPickStr[bnd] = '1'
++          }
++          if(cod === 0) {
++            code.push('if(s[', bnd, ']>1){dst.set(',
++              pickStr.join(), ',', bnd, ',0.5*(src.get(',
++                cPickStr.join(), ')-src.get(',
++                dPickStr.join(), ')))}else{dst.set(',
++              pickStr.join(), ',', bnd, ',0)};')
++          } else {
++            code.push('if(s[', bnd, ']>1){diff(', outStr, 
++                ',src.pick(', cPickStr.join(), ')', boundStr, 
++                ',src.pick(', dPickStr.join(), ')', boundStr, 
++                ');}else{zero(', outStr, ');};')
++          }
++        break
+ 
+-},{"../error/validation_error":376,"../util/extend":377,"../util/unbundle_jsonlint":379,"./validate_filter":386,"./validate_layout_property":390,"./validate_object":392,"./validate_paint_property":393}],390:[function(require,module,exports){
+-'use strict';
++        case 'mirror':
++          if(cod === 0) {
++            code.push('dst.set(', pickStr.join(), ',', bnd, ',0);')
++          } else {
++            code.push('zero(', outStr, ');')
++          }
++        break
+ 
+-var validate = require('./validate');
+-var ValidationError = require('../error/validation_error');
++        case 'wrap':
++          var aPickStr = pickStr.slice()
++          var bPickStr = pickStr.slice()
++          if(facet[i] < 0) {
++            aPickStr[bnd] = 's[' + bnd + ']-2'
++            bPickStr[bnd] = '0'
++            
++          } else {
++            aPickStr[bnd] = 's[' + bnd + ']-1'
++            bPickStr[bnd] = '1'
++          }
++          if(cod === 0) {
++            code.push('if(s[', bnd, ']>2){dst.set(',
++              pickStr.join(), ',', bnd, ',0.5*(src.get(',
++                aPickStr.join(), ')-src.get(',
++                bPickStr.join(), ')))}else{dst.set(',
++              pickStr.join(), ',', bnd, ',0)};')
++          } else {
++            code.push('if(s[', bnd, ']>2){diff(', outStr, 
++                ',src.pick(', aPickStr.join(), ')', boundStr, 
++                ',src.pick(', bPickStr.join(), ')', boundStr, 
++                ');}else{zero(', outStr, ');};')
++          }
++        break
+ 
+-module.exports = function validateLayoutProperty(options) {
+-    var key = options.key;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var value = options.value;
+-    var propertyKey = options.objectKey;
+-    var layerSpec = styleSpec['layout_' + options.layerType];
++        default:
++          throw new Error('ndarray-gradient: Invalid boundary condition')
++      }
++    }
+ 
+-    if (options.valueSpec || layerSpec[propertyKey]) {
+-        var errors = [];
++    if(cod > 0) {
++      code.push('};')
++    }
++  }
+ 
+-        if (options.layerType === 'symbol') {
+-            if (propertyKey === 'icon-image' && style && !style.sprite) {
+-                errors.push(new ValidationError(key, value, 'use of "icon-image" requires a style "sprite" property'));
+-            } else if (propertyKey === 'text-field' && style && !style.glyphs) {
+-                errors.push(new ValidationError(key, value, 'use of "text-field" requires a style "glyphs" property'));
+-            }
++  //Enumerate ridges, facets, etc. of hypercube
++  for(var i=0; i<(1<<d); ++i) {
++    var faces = []
++    for(var j=0; j<d; ++j) {
++      if(i & (1<<j)) {
++        faces.push(j+1)
++      }
++    }
++    for(var k=0; k<(1<<faces.length); ++k) {
++      var sfaces = faces.slice()
++      for(var j=0; j<faces.length; ++j) {
++        if(k & (1<<j)) {
++          sfaces[j] = -sfaces[j]
+         }
++      }
++      handleBoundary(sfaces)
++    }
++  }
+ 
+-        return errors.concat(validate({
+-            key: options.key,
+-            value: value,
+-            valueSpec: options.valueSpec || layerSpec[propertyKey],
+-            style: style,
+-            styleSpec: styleSpec
+-        }));
++  code.push('return dst;};return gradient')
+ 
+-    } else {
+-        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
+-    }
++  //Compile and link routine, save cached procedure
++  var linkNames = [ 'diff', 'zero' ]
++  var linkArgs  = [ centralDiff, zeroOut ]
++  for(var i=1; i<=d; ++i) {
++    linkNames.push('grad' + i)
++    linkArgs.push(generateTemplate(i))
++  }
++  linkNames.push(code.join(''))
+ 
+-};
++  var link = Function.apply(void 0, linkNames)
++  var proc = link.apply(void 0, linkArgs)
++  TEMPLATE_CACHE[token] = proc
++  return proc
++}
+ 
+-},{"../error/validation_error":376,"./validate":380}],391:[function(require,module,exports){
+-'use strict';
++function gradient(out, inp, bc) {
++  if(Array.isArray(bc)) {
++    if(bc.length !== inp.dimension) {
++      throw new Error('ndarray-gradient: invalid boundary conditions')
++    }
++  } else if(typeof bc === 'string') {
++    bc = dup(inp.dimension, bc)
++  } else {
++    bc = dup(inp.dimension, 'clamp')
++  }
++  if(out.dimension !== inp.dimension + 1) {
++    throw new Error('ndarray-gradient: output dimension must be +1 input dimension')
++  }
++  if(out.shape[inp.dimension] !== inp.dimension) {
++    throw new Error('ndarray-gradient: output shape must match input shape')
++  }
++  for(var i=0; i<inp.dimension; ++i) {
++    if(out.shape[i] !== inp.shape[i]) {
++      throw new Error('ndarray-gradient: shape mismatch')
++    }
++  }
++  if(inp.size === 0) {
++    return out
++  }
++  if(inp.dimension <= 0) {
++    out.set(0)
++    return out
++  }
++  var cached = generateGradient(bc)
++  return cached(out, inp)
++}
++},{"cwise-compiler":86,"dup":93}],377:[function(require,module,exports){
++'use strict'
+ 
+-var getType = require('../util/get_type');
+-var ValidationError = require('../error/validation_error');
++var warp = require('ndarray-warp')
++var invert = require('gl-matrix-invert')
+ 
+-module.exports = function validateNumber(options) {
+-    var key = options.key;
+-    var value = options.value;
+-    var valueSpec = options.valueSpec;
+-    var type = getType(value);
++module.exports = applyHomography
+ 
+-    if (type !== 'number') {
+-        return [new ValidationError(key, value, 'number expected, %s found', type)];
++function applyHomography(dest, src, Xi) {
++  var n = src.dimension
++  var X = invert([], Xi)
++  warp(dest, src, function(out_c, inp_c) {
++    for(var i=0; i<n; ++i) {
++      out_c[i] = X[(n+1)*n + i]
++      for(var j=0; j<n; ++j) {
++        out_c[i] += X[(n+1)*j+i] * inp_c[j]
++      }
+     }
+-
+-    if ('minimum' in valueSpec && value < valueSpec.minimum) {
+-        return [new ValidationError(key, value, '%s is less than the minimum value %s', value, valueSpec.minimum)];
++    var w = X[(n+1)*(n+1)-1]
++    for(var j=0; j<n; ++j) {
++      w += X[(n+1)*j+n] * inp_c[j]
+     }
++    var wr = 1.0 / w
++    for(var i=0; i<n; ++i) {
++      out_c[i] *= wr
++    }
++    return out_c
++  })
++  return dest
++}
++},{"gl-matrix-invert":153,"ndarray-warp":384}],378:[function(require,module,exports){
++"use strict"
+ 
+-    if ('maximum' in valueSpec && value > valueSpec.maximum) {
+-        return [new ValidationError(key, value, '%s is greater than the maximum value %s', value, valueSpec.maximum)];
++function interp1d(arr, x) {
++  var ix = Math.floor(x)
++    , fx = x - ix
++    , s0 = 0 <= ix   && ix   < arr.shape[0]
++    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
++    , w0 = s0 ? +arr.get(ix)   : 0.0
++    , w1 = s1 ? +arr.get(ix+1) : 0.0
++  return (1.0-fx)*w0 + fx*w1
++}
++
++function interp2d(arr, x, y) {
++  var ix = Math.floor(x)
++    , fx = x - ix
++    , s0 = 0 <= ix   && ix   < arr.shape[0]
++    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
++    , iy = Math.floor(y)
++    , fy = y - iy
++    , t0 = 0 <= iy   && iy   < arr.shape[1]
++    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
++    , w00 = s0&&t0 ? arr.get(ix  ,iy  ) : 0.0
++    , w01 = s0&&t1 ? arr.get(ix  ,iy+1) : 0.0
++    , w10 = s1&&t0 ? arr.get(ix+1,iy  ) : 0.0
++    , w11 = s1&&t1 ? arr.get(ix+1,iy+1) : 0.0
++  return (1.0-fy) * ((1.0-fx)*w00 + fx*w10) + fy * ((1.0-fx)*w01 + fx*w11)
++}
++
++function interp3d(arr, x, y, z) {
++  var ix = Math.floor(x)
++    , fx = x - ix
++    , s0 = 0 <= ix   && ix   < arr.shape[0]
++    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
++    , iy = Math.floor(y)
++    , fy = y - iy
++    , t0 = 0 <= iy   && iy   < arr.shape[1]
++    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
++    , iz = Math.floor(z)
++    , fz = z - iz
++    , u0 = 0 <= iz   && iz   < arr.shape[2]
++    , u1 = 0 <= iz+1 && iz+1 < arr.shape[2]
++    , w000 = s0&&t0&&u0 ? arr.get(ix,iy,iz)       : 0.0
++    , w010 = s0&&t1&&u0 ? arr.get(ix,iy+1,iz)     : 0.0
++    , w100 = s1&&t0&&u0 ? arr.get(ix+1,iy,iz)     : 0.0
++    , w110 = s1&&t1&&u0 ? arr.get(ix+1,iy+1,iz)   : 0.0
++    , w001 = s0&&t0&&u1 ? arr.get(ix,iy,iz+1)     : 0.0
++    , w011 = s0&&t1&&u1 ? arr.get(ix,iy+1,iz+1)   : 0.0
++    , w101 = s1&&t0&&u1 ? arr.get(ix+1,iy,iz+1)   : 0.0
++    , w111 = s1&&t1&&u1 ? arr.get(ix+1,iy+1,iz+1) : 0.0
++  return (1.0-fz) * ((1.0-fy) * ((1.0-fx)*w000 + fx*w100) + fy * ((1.0-fx)*w010 + fx*w110)) + fz * ((1.0-fy) * ((1.0-fx)*w001 + fx*w101) + fy * ((1.0-fx)*w011 + fx*w111))
++}
++
++function interpNd(arr) {
++  var d = arr.shape.length|0
++    , ix = new Array(d)
++    , fx = new Array(d)
++    , s0 = new Array(d)
++    , s1 = new Array(d)
++    , i, t
++  for(i=0; i<d; ++i) {
++    t = +arguments[i+1]
++    ix[i] = Math.floor(t)
++    fx[i] = t - ix[i]
++    s0[i] = (0 <= ix[i]   && ix[i]   < arr.shape[i])
++    s1[i] = (0 <= ix[i]+1 && ix[i]+1 < arr.shape[i])
++  }
++  var r = 0.0, j, w, idx
++i_loop:
++  for(i=0; i<(1<<d); ++i) {
++    w = 1.0
++    idx = arr.offset
++    for(j=0; j<d; ++j) {
++      if(i & (1<<j)) {
++        if(!s1[j]) {
++          continue i_loop
++        }
++        w *= fx[j]
++        idx += arr.stride[j] * (ix[j] + 1)
++      } else {
++        if(!s0[j]) {
++          continue i_loop
++        }
++        w *= 1.0 - fx[j]
++        idx += arr.stride[j] * ix[j]
++      }
+     }
++    r += w * arr.data[idx]
++  }
++  return r
++}
+ 
+-    return [];
+-};
++function interpolate(arr, x, y, z) {
++  switch(arr.shape.length) {
++    case 0:
++      return 0.0
++    case 1:
++      return interp1d(arr, x)
++    case 2:
++      return interp2d(arr, x, y)
++    case 3:
++      return interp3d(arr, x, y, z)
++    default:
++      return interpNd.apply(undefined, arguments)
++  }
++}
++module.exports = interpolate
++module.exports.d1 = interp1d
++module.exports.d2 = interp2d
++module.exports.d3 = interp3d
+ 
+-},{"../error/validation_error":376,"../util/get_type":378}],392:[function(require,module,exports){
+-'use strict';
++},{}],379:[function(require,module,exports){
++"use strict"
+ 
+-var ValidationError = require('../error/validation_error');
+-var getType = require('../util/get_type');
+-var validate = require('./validate');
++var compile = require("cwise-compiler")
+ 
+-module.exports = function validateObject(options) {
+-    var key = options.key;
+-    var object = options.value;
+-    var valueSpec = options.valueSpec;
+-    var objectElementValidators = options.objectElementValidators || {};
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var errors = [];
++var EmptyProc = {
++  body: "",
++  args: [],
++  thisVars: [],
++  localVars: []
++}
+ 
+-    var type = getType(object);
+-    if (type !== 'object') {
+-        return [new ValidationError(key, object, 'object expected, %s found', type)];
++function fixup(x) {
++  if(!x) {
++    return EmptyProc
++  }
++  for(var i=0; i<x.args.length; ++i) {
++    var a = x.args[i]
++    if(i === 0) {
++      x.args[i] = {name: a, lvalue:true, rvalue: !!x.rvalue, count:x.count||1 }
++    } else {
++      x.args[i] = {name: a, lvalue:false, rvalue:true, count: 1}
+     }
++  }
++  if(!x.thisVars) {
++    x.thisVars = []
++  }
++  if(!x.localVars) {
++    x.localVars = []
++  }
++  return x
++}
+ 
+-    for (var objectKey in object) {
+-        var valueSpecKey = objectKey.split('.')[0]; // treat 'paint.*' as 'paint'
+-        var objectElementSpec = valueSpec && (valueSpec[valueSpecKey] || valueSpec['*']);
+-        var objectElementValidator = objectElementValidators[valueSpecKey] || objectElementValidators['*'];
+-
+-        if (objectElementSpec || objectElementValidator) {
+-            errors = errors.concat((objectElementValidator || validate)({
+-                key: (key ? key + '.' : key) + objectKey,
+-                value: object[objectKey],
+-                valueSpec: objectElementSpec,
+-                style: style,
+-                styleSpec: styleSpec,
+-                object: object,
+-                objectKey: objectKey
+-            }));
+-
+-        // tolerate root-level extra keys & arbitrary layer properties
+-        // TODO remove this layer-specific logic
+-        } else if (key !== '' && key.split('.').length !== 1) {
+-            errors.push(new ValidationError(key, object[objectKey], 'unknown property "%s"', objectKey));
+-        }
+-    }
++function pcompile(user_args) {
++  return compile({
++    args:     user_args.args,
++    pre:      fixup(user_args.pre),
++    body:     fixup(user_args.body),
++    post:     fixup(user_args.proc),
++    funcName: user_args.funcName
++  })
++}
+ 
+-    for (valueSpecKey in valueSpec) {
+-        if (valueSpec[valueSpecKey].required && valueSpec[valueSpecKey]['default'] === undefined && object[valueSpecKey] === undefined) {
+-            errors.push(new ValidationError(key, object, 'missing required property "%s"', valueSpecKey));
+-        }
+-    }
++function makeOp(user_args) {
++  var args = []
++  for(var i=0; i<user_args.args.length; ++i) {
++    args.push("a"+i)
++  }
++  var wrapper = new Function("P", [
++    "return function ", user_args.funcName, "_ndarrayops(", args.join(","), ") {P(", args.join(","), ");return a0}"
++  ].join(""))
++  return wrapper(pcompile(user_args))
++}
+ 
+-    return errors;
+-};
++var assign_ops = {
++  add:  "+",
++  sub:  "-",
++  mul:  "*",
++  div:  "/",
++  mod:  "%",
++  band: "&",
++  bor:  "|",
++  bxor: "^",
++  lshift: "<<",
++  rshift: ">>",
++  rrshift: ">>>"
++}
++;(function(){
++  for(var id in assign_ops) {
++    var op = assign_ops[id]
++    exports[id] = makeOp({
++      args: ["array","array","array"],
++      body: {args:["a","b","c"],
++             body: "a=b"+op+"c"},
++      funcName: id
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array","array"],
++      body: {args:["a","b"],
++             body:"a"+op+"=b"},
++      rvalue: true,
++      funcName: id+"eq"
++    })
++    exports[id+"s"] = makeOp({
++      args: ["array", "array", "scalar"],
++      body: {args:["a","b","s"],
++             body:"a=b"+op+"s"},
++      funcName: id+"s"
++    })
++    exports[id+"seq"] = makeOp({
++      args: ["array","scalar"],
++      body: {args:["a","s"],
++             body:"a"+op+"=s"},
++      rvalue: true,
++      funcName: id+"seq"
++    })
++  }
++})();
+ 
+-},{"../error/validation_error":376,"../util/get_type":378,"./validate":380}],393:[function(require,module,exports){
+-'use strict';
++var unary_ops = {
++  not: "!",
++  bnot: "~",
++  neg: "-",
++  recip: "1.0/"
++}
++;(function(){
++  for(var id in unary_ops) {
++    var op = unary_ops[id]
++    exports[id] = makeOp({
++      args: ["array", "array"],
++      body: {args:["a","b"],
++             body:"a="+op+"b"},
++      funcName: id
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array"],
++      body: {args:["a"],
++             body:"a="+op+"a"},
++      rvalue: true,
++      count: 2,
++      funcName: id+"eq"
++    })
++  }
++})();
+ 
+-var validate = require('./validate');
+-var ValidationError = require('../error/validation_error');
++var binary_ops = {
++  and: "&&",
++  or: "||",
++  eq: "===",
++  neq: "!==",
++  lt: "<",
++  gt: ">",
++  leq: "<=",
++  geq: ">="
++}
++;(function() {
++  for(var id in binary_ops) {
++    var op = binary_ops[id]
++    exports[id] = makeOp({
++      args: ["array","array","array"],
++      body: {args:["a", "b", "c"],
++             body:"a=b"+op+"c"},
++      funcName: id
++    })
++    exports[id+"s"] = makeOp({
++      args: ["array","array","scalar"],
++      body: {args:["a", "b", "s"],
++             body:"a=b"+op+"s"},
++      funcName: id+"s"
++    })
++    exports[id+"eq"] = makeOp({
++      args: ["array", "array"],
++      body: {args:["a", "b"],
++             body:"a=a"+op+"b"},
++      rvalue:true,
++      count:2,
++      funcName: id+"eq"
++    })
++    exports[id+"seq"] = makeOp({
++      args: ["array", "scalar"],
++      body: {args:["a","s"],
++             body:"a=a"+op+"s"},
++      rvalue:true,
++      count:2,
++      funcName: id+"seq"
++    })
++  }
++})();
+ 
+-module.exports = function validatePaintProperty(options) {
+-    var key = options.key;
+-    var style = options.style;
+-    var styleSpec = options.styleSpec;
+-    var value = options.value;
+-    var propertyKey = options.objectKey;
+-    var layerSpec = styleSpec['paint_' + options.layerType];
++var math_unary = [
++  "abs",
++  "acos",
++  "asin",
++  "atan",
++  "ceil",
++  "cos",
++  "exp",
++  "floor",
++  "log",
++  "round",
++  "sin",
++  "sqrt",
++  "tan"
++]
++;(function() {
++  for(var i=0; i<math_unary.length; ++i) {
++    var f = math_unary[i]
++    exports[f] = makeOp({
++                    args: ["array", "array"],
++                    pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                    body: {args:["a","b"], body:"a=this_f(b)", thisVars:["this_f"]},
++                    funcName: f
++                  })
++    exports[f+"eq"] = makeOp({
++                      args: ["array"],
++                      pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                      body: {args: ["a"], body:"a=this_f(a)", thisVars:["this_f"]},
++                      rvalue: true,
++                      count: 2,
++                      funcName: f+"eq"
++                    })
++  }
++})();
+ 
+-    var transitionMatch = propertyKey.match(/^(.*)-transition$/);
++var math_comm = [
++  "max",
++  "min",
++  "atan2",
++  "pow"
++]
++;(function(){
++  for(var i=0; i<math_comm.length; ++i) {
++    var f= math_comm[i]
++    exports[f] = makeOp({
++                  args:["array", "array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
++                  funcName: f
++                })
++    exports[f+"s"] = makeOp({
++                  args:["array", "array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
++                  funcName: f+"s"
++                  })
++    exports[f+"eq"] = makeOp({ args:["array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
++                  rvalue: true,
++                  count: 2,
++                  funcName: f+"eq"
++                  })
++    exports[f+"seq"] = makeOp({ args:["array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
++                  rvalue:true,
++                  count:2,
++                  funcName: f+"seq"
++                  })
++  }
++})();
+ 
+-    if (transitionMatch && layerSpec[transitionMatch[1]] && layerSpec[transitionMatch[1]].transition) {
+-        return validate({
+-            key: key,
+-            value: value,
+-            valueSpec: styleSpec.transition,
+-            style: style,
+-            styleSpec: styleSpec
+-        });
++var math_noncomm = [
++  "atan2",
++  "pow"
++]
++;(function(){
++  for(var i=0; i<math_noncomm.length; ++i) {
++    var f= math_noncomm[i]
++    exports[f+"op"] = makeOp({
++                  args:["array", "array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
++                  funcName: f+"op"
++                })
++    exports[f+"ops"] = makeOp({
++                  args:["array", "array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
++                  funcName: f+"ops"
++                  })
++    exports[f+"opeq"] = makeOp({ args:["array", "array"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
++                  rvalue: true,
++                  count: 2,
++                  funcName: f+"opeq"
++                  })
++    exports[f+"opseq"] = makeOp({ args:["array", "scalar"],
++                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
++                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
++                  rvalue:true,
++                  count:2,
++                  funcName: f+"opseq"
++                  })
++  }
++})();
+ 
+-    } else if (options.valueSpec || layerSpec[propertyKey]) {
+-        return validate({
+-            key: options.key,
+-            value: value,
+-            valueSpec: options.valueSpec || layerSpec[propertyKey],
+-            style: style,
+-            styleSpec: styleSpec
+-        });
++exports.any = compile({
++  args:["array"],
++  pre: EmptyProc,
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "if(a){return true}", localVars: [], thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return false"},
++  funcName: "any"
++})
+ 
+-    } else {
+-        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
+-    }
++exports.all = compile({
++  args:["array"],
++  pre: EmptyProc,
++  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1}], body: "if(!x){return false}", localVars: [], thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return true"},
++  funcName: "all"
++})
+ 
+-};
++exports.sum = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s+=a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "sum"
++})
+ 
+-},{"../error/validation_error":376,"./validate":380}],394:[function(require,module,exports){
+-'use strict';
++exports.prod = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=1"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s*=a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "prod"
++})
+ 
+-var ValidationError = require('../error/validation_error');
+-var unbundle = require('../util/unbundle_jsonlint');
+-var validateObject = require('./validate_object');
+-var validateEnum = require('./validate_enum');
++exports.norm2squared = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norm2squared"
++})
++  
++exports.norm2 = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return Math.sqrt(this_s)"},
++  funcName: "norm2"
++})
++  
+ 
+-module.exports = function validateSource(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var styleSpec = options.styleSpec;
+-    var style = options.style;
++exports.norminf = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:4}], body:"if(-a>this_s){this_s=-a}else if(a>this_s){this_s=a}", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norminf"
++})
+ 
+-    if (!value.type) {
+-        return [new ValidationError(key, value, '"type" is required')];
+-    }
++exports.norm1 = compile({
++  args:["array"],
++  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
++  body: {args:[{name:"a", lvalue:false, rvalue:true, count:3}], body: "this_s+=a<0?-a:a", localVars: [], thisVars: ["this_s"]},
++  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
++  funcName: "norm1"
++})
+ 
+-    var type = unbundle(value.type);
+-    switch (type) {
+-        case 'vector':
+-        case 'raster':
+-            var errors = [];
+-            errors = errors.concat(validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_tile,
+-                style: options.style,
+-                styleSpec: styleSpec
+-            }));
+-            if ('url' in value) {
+-                for (var prop in value) {
+-                    if (['type', 'url', 'tileSize'].indexOf(prop) < 0) {
+-                        errors.push(new ValidationError(key + '.' + prop, value[prop], 'a source with a "url" property may not include a "%s" property', prop));
+-                    }
+-                }
+-            }
+-            return errors;
++exports.sup = compile({
++  args: [ "array" ],
++  pre:
++   { body: "this_h=-Infinity",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  body:
++   { body: "if(_inline_1_arg0_>this_h)this_h=_inline_1_arg0_",
++     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  post:
++   { body: "return this_h",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] }
++ })
+ 
+-        case 'geojson':
+-            return validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_geojson,
+-                style: style,
+-                styleSpec: styleSpec
+-            });
++exports.inf = compile({
++  args: [ "array" ],
++  pre:
++   { body: "this_h=Infinity",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  body:
++   { body: "if(_inline_1_arg0_<this_h)this_h=_inline_1_arg0_",
++     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
++     thisVars: [ "this_h" ],
++     localVars: [] },
++  post:
++   { body: "return this_h",
++     args: [],
++     thisVars: [ "this_h" ],
++     localVars: [] }
++ })
+ 
+-        case 'video':
+-            return validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_video,
+-                style: style,
+-                styleSpec: styleSpec
+-            });
++exports.argmin = compile({
++  args:["index","array","shape"],
++  pre:{
++    body:"{this_v=Infinity;this_i=_inline_0_arg2_.slice(0)}",
++    args:[
++      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
++      ],
++    thisVars:["this_i","this_v"],
++    localVars:[]},
++  body:{
++    body:"{if(_inline_1_arg1_<this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
++    args:[
++      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
++      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
++    thisVars:["this_i","this_v"],
++    localVars:["_inline_1_k"]},
++  post:{
++    body:"{return this_i}",
++    args:[],
++    thisVars:["this_i"],
++    localVars:[]}
++})
+ 
+-        case 'image':
+-            return validateObject({
+-                key: key,
+-                value: value,
+-                valueSpec: styleSpec.source_image,
+-                style: style,
+-                styleSpec: styleSpec
+-            });
++exports.argmax = compile({
++  args:["index","array","shape"],
++  pre:{
++    body:"{this_v=-Infinity;this_i=_inline_0_arg2_.slice(0)}",
++    args:[
++      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
++      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
++      ],
++    thisVars:["this_i","this_v"],
++    localVars:[]},
++  body:{
++    body:"{if(_inline_1_arg1_>this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
++    args:[
++      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
++      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
++    thisVars:["this_i","this_v"],
++    localVars:["_inline_1_k"]},
++  post:{
++    body:"{return this_i}",
++    args:[],
++    thisVars:["this_i"],
++    localVars:[]}
++})  
+ 
+-        default:
+-            return validateEnum({
+-                key: key + '.type',
+-                value: value.type,
+-                valueSpec: {values: ['vector', 'raster', 'geojson', 'video', 'image']},
+-                style: style,
+-                styleSpec: styleSpec
+-            });
+-    }
+-};
++exports.random = makeOp({
++  args: ["array"],
++  pre: {args:[], body:"this_f=Math.random", thisVars:["this_f"]},
++  body: {args: ["a"], body:"a=this_f()", thisVars:["this_f"]},
++  funcName: "random"
++})
+ 
+-},{"../error/validation_error":376,"../util/unbundle_jsonlint":379,"./validate_enum":385,"./validate_object":392}],395:[function(require,module,exports){
+-'use strict';
++exports.assign = makeOp({
++  args:["array", "array"],
++  body: {args:["a", "b"], body:"a=b"},
++  funcName: "assign" })
+ 
+-var getType = require('../util/get_type');
+-var ValidationError = require('../error/validation_error');
++exports.assigns = makeOp({
++  args:["array", "scalar"],
++  body: {args:["a", "b"], body:"a=b"},
++  funcName: "assigns" })
+ 
+-module.exports = function validateString(options) {
+-    var value = options.value;
+-    var key = options.key;
+-    var type = getType(value);
+ 
+-    if (type !== 'string') {
+-        return [new ValidationError(key, value, 'string expected, %s found', type)];
+-    }
++exports.equals = compile({
++  args:["array", "array"],
++  pre: EmptyProc,
++  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1},
++               {name:"y", lvalue:false, rvalue:true, count:1}], 
++        body: "if(x!==y){return false}", 
++        localVars: [], 
++        thisVars: []},
++  post: {args:[], localVars:[], thisVars:[], body:"return true"},
++  funcName: "equals"
++})
+ 
+-    return [];
+-};
+ 
+-},{"../error/validation_error":376,"../util/get_type":378}],396:[function(require,module,exports){
+-'use strict';
+ 
+-var validateConstants = require('./validate/validate_constants');
+-var validate = require('./validate/validate');
+-var latestStyleSpec = require('../reference/latest.min');
+-var validateGlyphsURL = require('./validate/validate_glyphs_url');
++},{"cwise-compiler":86}],380:[function(require,module,exports){
++"use strict"
+ 
+-/**
+- * Validate a Mapbox GL style against the style specification. This entrypoint,
+- * `mapbox-gl-style-spec/lib/validate_style.min`, is designed to produce as
+- * small a browserify bundle as possible by omitting unnecessary functionality
+- * and legacy style specifications.
+- *
+- * @param {Object} style The style to be validated.
+- * @param {Object} [styleSpec] The style specification to validate against.
+- *     If omitted, the latest style spec is used.
+- * @returns {Array<ValidationError>}
+- * @example
+- *   var validate = require('mapbox-gl-style-spec/lib/validate_style.min');
+- *   var errors = validate(style);
+- */
+-function validateStyleMin(style, styleSpec) {
+-    styleSpec = styleSpec || latestStyleSpec;
++var ndarray = require("ndarray")
++var do_convert = require("./doConvert.js")
+ 
+-    var errors = [];
++module.exports = function convert(arr, result) {
++  var shape = [], c = arr, sz = 1
++  while(Array.isArray(c)) {
++    shape.push(c.length)
++    sz *= c.length
++    c = c[0]
++  }
++  if(shape.length === 0) {
++    return ndarray()
++  }
++  if(!result) {
++    result = ndarray(new Float64Array(sz), shape)
++  }
++  do_convert(result, arr)
++  return result
++}
+ 
+-    errors = errors.concat(validate({
+-        key: '',
+-        value: style,
+-        valueSpec: styleSpec.$root,
+-        styleSpec: styleSpec,
+-        style: style,
+-        objectElementValidators: {
+-            glyphs: validateGlyphsURL
+-        }
+-    }));
++},{"./doConvert.js":381,"ndarray":385}],381:[function(require,module,exports){
++module.exports=require('cwise-compiler')({"args":["array","scalar","index"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{\nvar _inline_1_v=_inline_1_arg1_,_inline_1_i\nfor(_inline_1_i=0;_inline_1_i<_inline_1_arg2_.length-1;++_inline_1_i) {\n_inline_1_v=_inline_1_v[_inline_1_arg2_[_inline_1_i]]\n}\n_inline_1_arg0_=_inline_1_v[_inline_1_arg2_[_inline_1_arg2_.length-1]]\n}","args":[{"name":"_inline_1_arg0_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_1_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_1_arg2_","lvalue":false,"rvalue":true,"count":4}],"thisVars":[],"localVars":["_inline_1_i","_inline_1_v"]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"funcName":"convert","blockSize":64})
+ 
+-    if (styleSpec.$version > 7 && style.constants) {
+-        errors = errors.concat(validateConstants({
+-            key: 'constants',
+-            value: style.constants,
+-            style: style,
+-            styleSpec: styleSpec
+-        }));
+-    }
++},{"cwise-compiler":86}],382:[function(require,module,exports){
++"use strict"
+ 
+-    return sortErrors(errors);
+-}
++var pool = require("typedarray-pool")
+ 
+-validateStyleMin.source = wrapCleanErrors(require('./validate/validate_source'));
+-validateStyleMin.layer = wrapCleanErrors(require('./validate/validate_layer'));
+-validateStyleMin.filter = wrapCleanErrors(require('./validate/validate_filter'));
+-validateStyleMin.paintProperty = wrapCleanErrors(require('./validate/validate_paint_property'));
+-validateStyleMin.layoutProperty = wrapCleanErrors(require('./validate/validate_layout_property'));
++var INSERTION_SORT_THRESHOLD = 32
+ 
+-function sortErrors(errors) {
+-    return [].concat(errors).sort(function (a, b) {
+-        return a.line - b.line;
+-    });
++function getMallocFree(dtype) {
++  switch(dtype) {
++    case "uint8":
++      return [pool.mallocUint8, pool.freeUint8]
++    case "uint16":
++      return [pool.mallocUint16, pool.freeUint16]
++    case "uint32":
++      return [pool.mallocUint32, pool.freeUint32]
++    case "int8":
++      return [pool.mallocInt8, pool.freeInt8]
++    case "int16":
++      return [pool.mallocInt16, pool.freeInt16]
++    case "int32":
++      return [pool.mallocInt32, pool.freeInt32]
++    case "float32":
++      return [pool.mallocFloat, pool.freeFloat]
++    case "float64":
++      return [pool.mallocDouble, pool.freeDouble]
++    default:
++      return null
++  }
+ }
+ 
+-function wrapCleanErrors(inner) {
+-    return function() {
+-        return sortErrors(inner.apply(this, arguments));
+-    };
++function shapeArgs(dimension) {
++  var args = []
++  for(var i=0; i<dimension; ++i) {
++    args.push("s"+i)
++  }
++  for(var i=0; i<dimension; ++i) {
++    args.push("n"+i)
++  }
++  for(var i=1; i<dimension; ++i) {
++    args.push("d"+i)
++  }
++  for(var i=1; i<dimension; ++i) {
++    args.push("e"+i)
++  }
++  for(var i=1; i<dimension; ++i) {
++    args.push("f"+i)
++  }
++  return args
+ }
+ 
+-module.exports = validateStyleMin;
++function createInsertionSort(order, dtype) {
+ 
+-},{"../reference/latest.min":398,"./validate/validate":380,"./validate/validate_constants":384,"./validate/validate_filter":386,"./validate/validate_glyphs_url":388,"./validate/validate_layer":389,"./validate/validate_layout_property":390,"./validate/validate_paint_property":393,"./validate/validate_source":394}],397:[function(require,module,exports){
+-module.exports = require('./v8.json');
++  var code = ["'use strict'"]
++  var funcName = ["ndarrayInsertionSort", order.join("d"), dtype].join("")
++  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
++  var allocator = getMallocFree(dtype)
++  
++  var vars = [ "i,j,cptr,ptr=left*s0+offset" ]
++  
++  if(order.length > 1) {
++    var scratch_shape = []
++    for(var i=1; i<order.length; ++i) {
++      vars.push("i"+i)
++      scratch_shape.push("n"+i)
++    }
++    if(allocator) {
++      vars.push("scratch=malloc(" + scratch_shape.join("*") + ")")
++    } else {
++      vars.push("scratch=new Array("+scratch_shape.join("*") + ")")
++    }
++    vars.push("dptr","sptr","a","b")
++  } else {
++    vars.push("scratch")
++  }
++  
++  function dataRead(ptr) {
++    if(dtype === "generic") {
++      return ["data.get(", ptr, ")"].join("")
++    }
++    return ["data[",ptr,"]"].join("")
++  }
++  
++  function dataWrite(ptr, v) {
++    if(dtype === "generic") {
++      return ["data.set(", ptr, ",", v, ")"].join("")
++    }
++    return ["data[",ptr,"]=",v].join("")
++  }
++  
++  //Create function header
++  code.push(
++    ["function ", funcName, "(", funcArgs.join(","), "){var ", vars.join(",")].join(""),
++      "for(i=left+1;i<=right;++i){",
++        "j=i;ptr+=s0",
++        "cptr=ptr")
++  
++  
++  if(order.length > 1) {
++  
++    //Copy data into scratch
++    code.push("dptr=0;sptr=ptr")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
++    }
++    code.push("scratch[dptr++]=",dataRead("sptr"))
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push("sptr+=d"+j,"}")
++    }
+ 
+-},{"./v8.json":399}],398:[function(require,module,exports){
+-module.exports = require('./v8.min.json');
++    
++    //Compare items in outer loop
++    code.push("__g:while(j-->left){",
++              "dptr=0",
++              "sptr=cptr-s0")
++    for(var i=1; i<order.length; ++i) {
++      if(i === 1) {
++        code.push("__l:")
++      }
++      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
++    }
++    code.push(["a=", dataRead("sptr"),"\nb=scratch[dptr]\nif(a<b){break __g}\nif(a>b){break __l}"].join(""))
++    for(var i=order.length-1; i>=1; --i) {
++      code.push(
++        "sptr+=e"+i,
++        "dptr+=f"+i,
++        "}")
++    }
++    
++    //Copy data back
++    code.push("dptr=cptr;sptr=cptr-s0")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
++    }
++    code.push(dataWrite("dptr", dataRead("sptr")))
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push(["dptr+=d",j,";sptr+=d",j].join(""),"}")
++    }
++    
++    //Close while loop
++    code.push("cptr-=s0\n}")
+ 
+-},{"./v8.min.json":400}],399:[function(require,module,exports){
+-module.exports={
+-  "$version": 8,
+-  "$root": {
+-    "version": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [8],
+-      "doc": "Stylesheet version number. Must be 8.",
+-      "example": 8
+-    },
+-    "name": {
+-      "type": "string",
+-      "doc": "A human-readable name for the style.",
+-      "example": "Bright"
+-    },
+-    "metadata": {
+-      "type": "*",
+-      "doc": "Arbitrary properties useful to track with the stylesheet, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
+-    },
+-    "center": {
+-      "type": "array",
+-      "value": "number",
+-      "doc": "Default map center in longitude and latitude.  The style center will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": [-73.9749, 40.7736]
+-    },
+-    "zoom": {
+-      "type": "number",
+-      "doc": "Default zoom level.  The style zoom will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": 12.5
+-    },
+-    "bearing": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "units": "degrees",
+-      "doc": "Default bearing, in degrees.  The style bearing will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": 29
+-    },
+-    "pitch": {
+-      "type": "number",
+-      "default": 0,
+-      "units": "degrees",
+-      "doc": "Default pitch, in degrees. Zero is perpendicular to the surface.  The style pitch will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",
+-      "example": 50
+-    },
+-    "sources": {
+-      "required": true,
+-      "type": "sources",
+-      "doc": "Data source specifications.",
+-      "example": {
+-        "mapbox-streets": {
+-          "type": "vector",
+-          "url": "mapbox://mapbox.mapbox-streets-v6"
+-        }
++    //Copy scratch into cptr
++    code.push("dptr=cptr;sptr=0")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
++    }
++    code.push(dataWrite("dptr", "scratch[sptr++]"))
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      code.push("dptr+=d"+j,"}")
++    }
++  } else {
++    code.push("scratch=" + dataRead("ptr"),
++              "while((j-->left)&&("+dataRead("cptr-s0")+">scratch)){",
++                dataWrite("cptr", dataRead("cptr-s0")),
++                "cptr-=s0",
++              "}",
++              dataWrite("cptr", "scratch"))
++  }
++  
++  //Close outer loop body
++  code.push("}")
++  if(order.length > 1 && allocator) {
++    code.push("free(scratch)")
++  }
++  code.push("} return " + funcName)
++  
++  //Compile and link function
++  if(allocator) {
++    var result = new Function("malloc", "free", code.join("\n"))
++    return result(allocator[0], allocator[1])
++  } else {
++    var result = new Function(code.join("\n"))
++    return result()
++  }
++}
++
++function createQuickSort(order, dtype, insertionSort) {
++  var code = [ "'use strict'" ]
++  var funcName = ["ndarrayQuickSort", order.join("d"), dtype].join("")
++  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
++  var allocator = getMallocFree(dtype)
++  var labelCounter=0
++  
++  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
++  
++  var vars = [
++    "sixth=((right-left+1)/6)|0",
++    "index1=left+sixth",
++    "index5=right-sixth",
++    "index3=(left+right)>>1",
++    "index2=index3-sixth",
++    "index4=index3+sixth",
++    "el1=index1",
++    "el2=index2",
++    "el3=index3",
++    "el4=index4",
++    "el5=index5",
++    "less=left+1",
++    "great=right-1",
++    "pivots_are_equal=true",
++    "tmp",
++    "tmp0",
++    "x",
++    "y",
++    "z",
++    "k",
++    "ptr0",
++    "ptr1",
++    "ptr2",
++    "comp_pivot1=0",
++    "comp_pivot2=0",
++    "comp=0"
++  ]
++  
++  if(order.length > 1) {
++    var ele_size = []
++    for(var i=1; i<order.length; ++i) {
++      ele_size.push("n"+i)
++      vars.push("i"+i)
++    }
++    for(var i=0; i<8; ++i) {
++      vars.push("b_ptr"+i)
++    }
++    vars.push(
++      "ptr3",
++      "ptr4",
++      "ptr5",
++      "ptr6",
++      "ptr7",
++      "pivot_ptr",
++      "ptr_shift",
++      "elementSize="+ele_size.join("*"))
++    if(allocator) {
++      vars.push("pivot1=malloc(elementSize)",
++                "pivot2=malloc(elementSize)")
++    } else {
++      vars.push("pivot1=new Array(elementSize),pivot2=new Array(elementSize)")
++    }
++  } else {
++    vars.push("pivot1", "pivot2")
++  }
++  
++  //Initialize local variables
++  code.push("var " + vars.join(","))
++  
++  function toPointer(v) {
++    return ["(offset+",v,"*s0)"].join("")
++  }
++  
++  function dataRead(ptr) {
++    if(dtype === "generic") {
++      return ["data.get(", ptr, ")"].join("")
++    }
++    return ["data[",ptr,"]"].join("")
++  }
++  
++  function dataWrite(ptr, v) {
++    if(dtype === "generic") {
++      return ["data.set(", ptr, ",", v, ")"].join("")
++    }
++    return ["data[",ptr,"]=",v].join("")
++  }
++  
++  function cacheLoop(ptrs, usePivot, body) {
++    if(ptrs.length === 1) {
++      code.push("ptr0="+toPointer(ptrs[0]))
++    } else {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
+       }
+-    },
+-    "sprite": {
+-      "type": "string",
+-      "doc": "A base URL for retrieving the sprite image and metadata. The extensions `.png`, `.json` and scale factor `@2x.png` will be automatically appended. This property is required if any layer uses the 'sprite-image' layout property.",
+-      "example": "mapbox://sprites/mapbox/bright-v8"
+-    },
+-    "glyphs": {
+-      "type": "string",
+-      "doc": "A URL template for loading signed-distance-field glyph sets in PBF format. The URL must include `{fontstack}` and `{range}` tokens. This property is required if any layer uses the 'text-field' layout property.",
+-      "example": "mapbox://fonts/mapbox/{fontstack}/{range}.pbf"
+-    },
+-    "transition": {
+-      "type": "transition",
+-      "doc": "A global transition definition to use as a default across properties.",
+-      "example": {
+-        "duration": 300,
+-        "delay": 0
++    }
++    if(usePivot) {
++      code.push("pivot_ptr=0")
++    }
++    code.push("ptr_shift=offset")
++    for(var i=order.length-1; i>=0; --i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
+       }
+-    },
+-    "layers": {
+-      "required": true,
+-      "type": "array",
+-      "value": "layer",
+-      "doc": "Layers will be drawn in the order of this array.",
+-      "example": [
+-        {
+-          "id": "water",
+-          "source": "mapbox-streets",
+-          "source-layer": "water",
+-          "type": "fill",
+-          "paint": {
+-            "fill-color": "#00ffff"
+-          }
+-        }
+-      ]
++      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
+     }
+-  },
+-  "sources": {
+-    "*": {
+-      "type": "source",
+-      "doc": "Specification of a data source. For vector and raster sources, either TileJSON or a URL to a TileJSON must be provided. For GeoJSON and video sources, a URL must be provided."
++    if(ptrs.length > 1) {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
++      }
+     }
+-  },
+-  "source": [
+-    "source_tile",
+-    "source_geojson",
+-    "source_video",
+-    "source_image"
+-  ],
+-  "source_tile": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "vector",
+-        "raster"
+-      ],
+-      "doc": "The data type of the tile source."
+-    },
+-    "url": {
+-      "type": "string",
+-      "doc": "A URL to a TileJSON resource. Supported protocols are `http:`, `https:`, and `mapbox://<mapid>`."
+-    },
+-    "tiles": {
+-      "type": "array",
+-      "value": "string",
+-      "doc": "An array of one or more tile source URLs, as in the TileJSON spec."
+-    },
+-    "minzoom": {
+-      "type": "number",
+-      "default": 0,
+-      "doc": "Minimum zoom level for which tiles are available, as in the TileJSON spec."
+-    },
+-    "maxzoom": {
+-      "type": "number",
+-      "default": 22,
+-      "doc": "Maximum zoom level for which tiles are available, as in the TileJSON spec. Data from tiles at the maxzoom are used when displaying the map at higher zoom levels."
+-    },
+-    "tileSize": {
+-      "type": "number",
+-      "default": 512,
+-      "units": "pixels",
+-      "doc": "The minimum visual size to display tiles for this layer. Only configurable for raster layers."
+-    },
+-    "*": {
+-      "type": "*",
+-      "doc": "Other keys to configure the data source."
++    code.push(body)
++    if(usePivot) {
++      code.push("++pivot_ptr")
+     }
+-  },
+-  "source_geojson": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "geojson"
+-      ],
+-      "doc": "The data type of the GeoJSON source."
+-    },
+-    "data": {
+-      "type": "*",
+-      "doc": "A URL to a GeoJSON file, or inline GeoJSON."
+-    },
+-    "maxzoom": {
+-      "type": "number",
+-      "default": 14,
+-      "doc": "Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels)."
+-    },
+-    "buffer": {
+-      "type": "number",
+-      "default": 64,
+-      "doc": "Tile buffer size on each side (higher means fewer rendering artifacts near tile edges but slower performance)."
+-    },
+-    "tolerance": {
+-      "type": "number",
+-      "default": 3,
+-      "doc": "Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance)."
+-    },
+-    "cluster": {
+-      "type": "boolean",
+-      "default": false,
+-      "doc": "If the data is a collection of point features, setting this to true clusters the points by radius into groups."
+-    },
+-    "clusterRadius": {
+-      "type": "number",
+-      "default": 400,
+-      "doc": "Radius of each cluster when clustering points, relative to 4096 tile."
+-    },
+-    "clusterMaxZoom": {
+-      "type": "number",
+-      "doc": "Max zoom to cluster points on. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered)."
++    for(var i=0; i<order.length; ++i) {
++      var j = order[i]
++      if(j === 0) {
++        continue
++      }
++      if(ptrs.length>1) {
++        code.push("ptr_shift+=d"+j)
++      } else {
++        code.push("ptr0+=d"+j)
++      }
++      code.push("}")
+     }
+-  },
+-  "source_video": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "video"
+-      ],
+-      "doc": "The data type of the video source."
+-    },
+-    "urls": {
+-      "required": true,
+-      "type": "array",
+-      "value": "string",
+-      "doc": "URLs to video content in order of preferred format."
+-    },
+-    "coordinates": {
+-      "required": true,
+-      "doc": "Corners of video specified in longitude, latitude pairs.",
+-      "type": "array",
+-      "length": 4,
+-      "value": {
+-        "type": "array",
+-        "length": 2,
+-        "value": "number",
+-        "doc": "A single longitude, latitude pair."
++  }
++  
++  function lexicoLoop(label, ptrs, usePivot, body) {
++    if(ptrs.length === 1) {
++      code.push("ptr0="+toPointer(ptrs[0]))
++    } else {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
+       }
++      code.push("ptr_shift=offset")
+     }
+-  },
+-  "source_image": {
+-    "type": {
+-      "required": true,
+-      "type": "enum",
+-      "values": [
+-        "image"
+-      ],
+-      "doc": "The data type of the image source."
+-    },
+-    "url": {
+-      "required": true,
+-      "type": "string",
+-      "doc": "URL that points to an image"
+-    },
+-    "coordinates": {
+-      "required": true,
+-      "doc": "Corners of image specified in longitude, latitude pairs.",
+-      "type": "array",
+-      "length": 4,
+-      "value": {
+-        "type": "array",
+-        "length": 2,
+-        "value": "number",
+-        "doc": "A single longitude, latitude pair."
++    if(usePivot) {
++      code.push("pivot_ptr=0")
++    }
++    if(label) {
++      code.push(label+":")
++    }
++    for(var i=1; i<order.length; ++i) {
++      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
++    }
++    if(ptrs.length > 1) {
++      for(var i=0; i<ptrs.length; ++i) {
++        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
+       }
+     }
+-  },
+-  "layer": {
+-    "id": {
+-      "type": "string",
+-      "doc": "Unique layer name.",
+-      "required": true
+-    },
+-    "type": {
+-      "type": "enum",
+-      "values": [
+-        "fill",
+-        "line",
+-        "symbol",
+-        "circle",
+-        "raster",
+-        "background"
+-      ],
+-      "doc": "Rendering type of this layer."
+-    },
+-    "metadata": {
+-      "type": "*",
+-      "doc": "Arbitrary properties useful to track with the layer, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."
+-    },
+-    "ref": {
+-      "type": "string",
+-      "doc": "References another layer to copy `type`, `source`, `source-layer`, `minzoom`, `maxzoom`, `filter`, and `layout` properties from. This allows the layers to share processing and be more efficient."
+-    },
+-    "source": {
+-      "type": "string",
+-      "doc": "Name of a source description to be used for this layer."
+-    },
+-    "source-layer": {
+-      "type": "string",
+-      "doc": "Layer to use from a vector tile source. Required if the source supports multiple layers."
+-    },
+-    "minzoom": {
+-      "type": "number",
+-      "minimum": 0,
+-      "maximum": 22,
+-      "doc": "The minimum zoom level on which the layer gets parsed and appears on."
+-    },
+-    "maxzoom": {
+-      "type": "number",
+-      "minimum": 0,
+-      "maximum": 22,
+-      "doc": "The maximum zoom level on which the layer gets parsed and appears on."
+-    },
+-    "interactive": {
+-      "type": "boolean",
+-      "doc": "Enable querying of feature data from this layer for interactivity.",
+-      "default": false
+-    },
+-    "filter": {
+-      "type": "filter",
+-      "doc": "A expression specifying conditions on source features. Only features that match the filter are displayed."
+-    },
+-    "layout": {
+-      "type": "layout",
+-      "doc": "Layout properties for the layer."
+-    },
+-    "paint": {
+-      "type": "paint",
+-      "doc": "Default paint properties for this layer."
+-    },
+-    "paint.*": {
+-      "type": "paint",
+-      "doc": "Class-specific paint properties for this layer. The class name is the part after the first dot."
++    code.push(body)
++    for(var i=order.length-1; i>=1; --i) {
++      if(usePivot) {
++        code.push("pivot_ptr+=f"+i)
++      }
++      if(ptrs.length > 1) {
++        code.push("ptr_shift+=e"+i)
++      } else {
++        code.push("ptr0+=e"+i)
++      }
++      code.push("}")
+     }
+-  },
+-  "layout": [
+-    "layout_fill",
+-    "layout_line",
+-    "layout_circle",
+-    "layout_symbol",
+-    "layout_raster",
+-    "layout_background"
+-  ],
+-  "layout_background": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++  }
++  
++  function cleanUp() {
++    if(order.length > 1 && allocator) {
++      code.push("free(pivot1)", "free(pivot2)")
+     }
+-  },
+-  "layout_fill": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++  }
++  
++  function compareSwap(a_id, b_id) {
++    var a = "el"+a_id
++    var b = "el"+b_id
++    if(order.length > 1) {
++      var lbl = "__l" + (++labelCounter)
++      lexicoLoop(lbl, [a, b], false, [
++        "comp=",dataRead("ptr0"),"-",dataRead("ptr1"),"\n",
++        "if(comp>0){tmp0=", a, ";",a,"=",b,";", b,"=tmp0;break ", lbl,"}\n",
++        "if(comp<0){break ", lbl, "}"
++      ].join(""))
++    } else {
++      code.push(["if(", dataRead(toPointer(a)), ">", dataRead(toPointer(b)), "){tmp0=", a, ";",a,"=",b,";", b,"=tmp0}"].join(""))
+     }
+-  },
+-  "layout_circle": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++  }
++  
++  compareSwap(1, 2)
++  compareSwap(4, 5)
++  compareSwap(1, 3)
++  compareSwap(2, 3)
++  compareSwap(1, 4)
++  compareSwap(3, 4)
++  compareSwap(2, 5)
++  compareSwap(2, 3)
++  compareSwap(4, 5)
++  
++  if(order.length > 1) {
++    cacheLoop(["el1", "el2", "el3", "el4", "el5", "index1", "index3", "index5"], true, [
++      "pivot1[pivot_ptr]=",dataRead("ptr1"),"\n",
++      "pivot2[pivot_ptr]=",dataRead("ptr3"),"\n",
++      "pivots_are_equal=pivots_are_equal&&(pivot1[pivot_ptr]===pivot2[pivot_ptr])\n",
++      "x=",dataRead("ptr0"),"\n",
++      "y=",dataRead("ptr2"),"\n",
++      "z=",dataRead("ptr4"),"\n",
++      dataWrite("ptr5", "x"),"\n",
++      dataWrite("ptr6", "y"),"\n",
++      dataWrite("ptr7", "z")
++    ].join(""))
++  } else {
++    code.push([
++      "pivot1=", dataRead(toPointer("el2")), "\n",
++      "pivot2=", dataRead(toPointer("el4")), "\n",
++      "pivots_are_equal=pivot1===pivot2\n",
++      "x=", dataRead(toPointer("el1")), "\n",
++      "y=", dataRead(toPointer("el3")), "\n",
++      "z=", dataRead(toPointer("el5")), "\n",
++      dataWrite(toPointer("index1"), "x"), "\n",
++      dataWrite(toPointer("index3"), "y"), "\n",
++      dataWrite(toPointer("index5"), "z")
++    ].join(""))
++  }
++  
++
++  function moveElement(dst, src) {
++    if(order.length > 1) {
++      cacheLoop([dst, src], false,
++        dataWrite("ptr0", dataRead("ptr1"))
++      )
++    } else {
++      code.push(dataWrite(toPointer(dst), dataRead(toPointer(src))))
++    }
++  }
++  
++  moveElement("index2", "left")
++  moveElement("index4", "right")
++  
++  function comparePivot(result, ptr, n) {
++    if(order.length > 1) {
++      var lbl = "__l" + (++labelCounter)
++      lexicoLoop(lbl, [ptr], true, [
++        result,"=",dataRead("ptr0"),"-pivot",n,"[pivot_ptr]\n",
++        "if(",result,"!==0){break ", lbl, "}"
++      ].join(""))
++    } else {
++      code.push([result,"=", dataRead(toPointer(ptr)), "-pivot", n].join(""))
++    }
++  }
++  
++  function swapElements(a, b) {
++    if(order.length > 1) {
++      cacheLoop([a,b],false,[
++        "tmp=",dataRead("ptr0"),"\n",
++        dataWrite("ptr0", dataRead("ptr1")),"\n",
++        dataWrite("ptr1", "tmp")
++      ].join(""))
++    } else {
++      code.push([
++        "ptr0=",toPointer(a),"\n",
++        "ptr1=",toPointer(b),"\n",
++        "tmp=",dataRead("ptr0"),"\n",
++        dataWrite("ptr0", dataRead("ptr1")),"\n",
++        dataWrite("ptr1", "tmp")
++      ].join(""))
++    }
++  }
++  
++  function tripleSwap(k, less, great) {
++    if(order.length > 1) {
++      cacheLoop([k,less,great], false, [
++        "tmp=",dataRead("ptr0"),"\n",
++        dataWrite("ptr0", dataRead("ptr1")),"\n",
++        dataWrite("ptr1", dataRead("ptr2")),"\n",
++        dataWrite("ptr2", "tmp")
++      ].join(""))
++      code.push("++"+less, "--"+great)
++    } else {
++      code.push([
++        "ptr0=",toPointer(k),"\n",
++        "ptr1=",toPointer(less),"\n",
++        "ptr2=",toPointer(great),"\n",
++        "++",less,"\n",
++        "--",great,"\n",
++        "tmp=", dataRead("ptr0"), "\n",
++        dataWrite("ptr0", dataRead("ptr1")), "\n",
++        dataWrite("ptr1", dataRead("ptr2")), "\n",
++        dataWrite("ptr2", "tmp")
++      ].join(""))
++    }
++  }
++  
++  function swapAndDecrement(k, great) {
++    swapElements(k, great)
++    code.push("--"+great)
++  }
++    
++  code.push("if(pivots_are_equal){")
++    //Pivots are equal case
++    code.push("for(k=less;k<=great;++k){")
++      comparePivot("comp", "k", 1)
++      code.push("if(comp===0){continue}")
++      code.push("if(comp<0){")
++        code.push("if(k!==less){")
++          swapElements("k", "less")
++        code.push("}")
++        code.push("++less")
++      code.push("}else{")
++        code.push("while(true){")
++          comparePivot("comp", "great", 1)
++          code.push("if(comp>0){")
++            code.push("great--")
++          code.push("}else if(comp<0){")
++            tripleSwap("k", "less", "great")
++            code.push("break")
++          code.push("}else{")
++            swapAndDecrement("k", "great")
++            code.push("break")
++          code.push("}")
++        code.push("}")
++      code.push("}")
++    code.push("}")
++  code.push("}else{")
++    //Pivots not equal case
++    code.push("for(k=less;k<=great;++k){")
++      comparePivot("comp_pivot1", "k", 1)
++      code.push("if(comp_pivot1<0){")
++        code.push("if(k!==less){")
++          swapElements("k", "less")
++        code.push("}")
++        code.push("++less")
++      code.push("}else{")
++        comparePivot("comp_pivot2", "k", 2)
++        code.push("if(comp_pivot2>0){")
++          code.push("while(true){")
++            comparePivot("comp", "great", 2)
++            code.push("if(comp>0){")
++              code.push("if(--great<k){break}")
++              code.push("continue")
++            code.push("}else{")
++              comparePivot("comp", "great", 1)
++              code.push("if(comp<0){")
++                tripleSwap("k", "less", "great")
++              code.push("}else{")
++                swapAndDecrement("k", "great")
++              code.push("}")
++              code.push("break")
++            code.push("}")
++          code.push("}")
++        code.push("}")
++      code.push("}")
++    code.push("}")
++  code.push("}")
++  
++  //Move pivots to correct place
++  function storePivot(mem_dest, pivot_dest, pivot) {
++    if(order.length>1) {
++      cacheLoop([mem_dest, pivot_dest], true, [
++        dataWrite("ptr0", dataRead("ptr1")), "\n",
++        dataWrite("ptr1", ["pivot",pivot,"[pivot_ptr]"].join(""))
++      ].join(""))
++    } else {
++      code.push(
++          dataWrite(toPointer(mem_dest), dataRead(toPointer(pivot_dest))),
++          dataWrite(toPointer(pivot_dest), "pivot"+pivot))
+     }
+-  },
+-  "layout_line": {
+-    "line-cap": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "butt",
+-        "round",
+-        "square"
+-      ],
+-      "default": "butt",
+-      "doc": "The display of line endings."
+-    },
+-    "line-join": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "bevel",
+-        "round",
+-        "miter"
+-      ],
+-      "default": "miter",
+-      "doc": "The display of lines when joining."
+-    },
+-    "line-miter-limit": {
+-      "type": "number",
+-      "default": 2,
+-      "function": "interpolated",
+-      "doc": "Used to automatically convert miter joins to bevel joins for sharp angles.",
+-      "requires": [
+-        {
+-          "line-join": "miter"
+-        }
+-      ]
+-    },
+-    "line-round-limit": {
+-      "type": "number",
+-      "default": 1.05,
+-      "function": "interpolated",
+-      "doc": "Used to automatically convert round joins to miter joins for shallow angles.",
+-      "requires": [
+-        {
+-          "line-join": "round"
+-        }
+-      ]
+-    },
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++  }
++  
++  storePivot("left", "(less-1)", 1)
++  storePivot("right", "(great+1)", 2)
++
++  //Recursive sort call
++  function doSort(left, right) {
++    code.push([
++      "if((",right,"-",left,")<=",INSERTION_SORT_THRESHOLD,"){\n",
++        "insertionSort(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
++      "}else{\n",
++        funcName, "(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
++      "}"
++    ].join(""))
++  }
++  doSort("left", "(less-2)")
++  doSort("(great+2)", "right")
++  
++  //If pivots are equal, then early out
++  code.push("if(pivots_are_equal){")
++    cleanUp()
++    code.push("return")
++  code.push("}")
++  
++  function walkPointer(ptr, pivot, body) {
++    if(order.length > 1) {
++      code.push(["__l",++labelCounter,":while(true){"].join(""))
++      cacheLoop([ptr], true, [
++        "if(", dataRead("ptr0"), "!==pivot", pivot, "[pivot_ptr]){break __l", labelCounter, "}"
++      ].join(""))
++      code.push(body, "}")
++    } else {
++      code.push(["while(", dataRead(toPointer(ptr)), "===pivot", pivot, "){", body, "}"].join(""))
+     }
+-  },
+-  "layout_symbol": {
+-    "symbol-placement": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-          "point",
+-          "line"
+-      ],
+-      "default": "point",
+-      "doc": "Label placement relative to its geometry. `line` can only be used on LineStrings and Polygons."
+-    },
+-    "symbol-spacing": {
+-      "type": "number",
+-      "default": 250,
+-      "minimum": 1,
+-      "function": "interpolated",
+-      "units": "pixels",
+-      "doc": "Distance between two symbol anchors.",
+-      "requires": [
+-        {
+-          "symbol-placement": "line"
+-        }
+-      ]
+-    },
+-    "symbol-avoid-edges": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer."
+-    },
+-    "icon-allow-overlap": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the icon will be visible even if it collides with other previously drawn symbols.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-ignore-placement": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, other symbols can be visible even if they collide with the icon.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-optional": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.",
+-      "requires": [
+-        "icon-image",
+-        "text-field"
+-      ]
+-    },
+-    "icon-rotation-alignment": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "default": "viewport",
+-      "doc": "Orientation of icon when map is rotated.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-size": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "doc": "Scale factor for icon. 1 is original size, 3 triples the size.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-image": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "doc": "A string with {tokens} replaced, referencing the data property to pull from.",
+-      "tokens": true
+-    },
+-    "icon-rotate": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "function": "interpolated",
+-      "units": "degrees",
+-      "doc": "Rotates the icon clockwise.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-padding": {
+-      "type": "number",
+-      "default": 2,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "units": "pixels",
+-      "doc": "Size of the additional area around the icon bounding box used for detecting symbol collisions.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-keep-upright": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the icon may be flipped to prevent it from being rendered upside-down.",
+-      "requires": [
+-        "icon-image",
+-        {
+-          "icon-rotation-alignment": "map"
+-        },
+-        {
+-          "symbol-placement": "line"
+-        }
+-      ]
+-    },
+-    "icon-offset": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "doc": "Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "text-rotation-alignment": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "default": "viewport",
+-      "doc": "Orientation of text when map is rotated.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-field": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "default": "",
+-      "tokens": true,
+-      "doc": "Value to use for a text label. Feature properties are specified using tokens like {field_name}."
+-    },
+-    "text-font": {
+-      "type": "array",
+-      "value": "string",
+-      "function": "piecewise-constant",
+-      "default": ["Open Sans Regular", "Arial Unicode MS Regular"],
+-      "doc": "Font stack to use for displaying text.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-size": {
+-      "type": "number",
+-      "default": 16,
+-      "minimum": 0,
+-      "units": "pixels",
+-      "function": "interpolated",
+-      "doc": "Font size.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-max-width": {
+-      "type": "number",
+-      "default": 10,
+-      "minimum": 0,
+-      "units": "em",
+-      "function": "interpolated",
+-      "doc": "The maximum line width for text wrapping.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-line-height": {
+-      "type": "number",
+-      "default": 1.2,
+-      "units": "em",
+-      "function": "interpolated",
+-      "doc": "Text leading value for multi-line text.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-letter-spacing": {
+-      "type": "number",
+-      "default": 0,
+-      "units": "em",
+-      "function": "interpolated",
+-      "doc": "Text tracking amount.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-justify": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "left",
+-        "center",
+-        "right"
+-      ],
+-      "default": "center",
+-      "doc": "Text justification options.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "center",
+-        "left",
+-        "right",
+-        "top",
+-        "bottom",
+-        "top-left",
+-        "top-right",
+-        "bottom-left",
+-        "bottom-right"
+-      ],
+-      "default": "center",
+-      "doc": "Part of the text placed closest to the anchor.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-max-angle": {
+-      "type": "number",
+-      "default": 45,
+-      "units": "degrees",
+-      "function": "interpolated",
+-      "doc": "Maximum angle change between adjacent characters.",
+-      "requires": [
+-        "text-field",
+-        {
+-          "symbol-placement": "line"
+-        }
+-      ]
+-    },
+-    "text-rotate": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "units": "degrees",
+-      "function": "interpolated",
+-      "doc": "Rotates the text clockwise.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-padding": {
+-      "type": "number",
+-      "default": 2,
+-      "minimum": 0,
+-      "units": "pixels",
+-      "function": "interpolated",
+-      "doc": "Size of the additional area around the text bounding box used for detecting symbol collisions.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-keep-upright": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": true,
+-      "doc": "If true, the text may be flipped vertically to prevent it from being rendered upside-down.",
+-      "requires": [
+-        "text-field",
+-        {
+-          "text-rotation-alignment": "map"
+-        },
+-        {
+-          "symbol-placement": "line"
+-        }
+-      ]
+-    },
+-    "text-transform": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "none",
+-        "uppercase",
+-        "lowercase"
+-      ],
+-      "default": "none",
+-      "doc": "Specifies how to capitalize text, similar to the CSS `text-transform` property.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-offset": {
+-      "type": "array",
+-      "doc": "Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up.",
+-      "value": "number",
+-      "units": "ems",
+-      "function": "interpolated",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-allow-overlap": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, the text will be visible even if it collides with other previously drawn symbols.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-ignore-placement": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, other symbols can be visible even if they collide with the text.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-optional": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": false,
+-      "doc": "If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not.",
+-      "requires": [
+-        "text-field",
+-        "icon-image"
+-      ]
+-    },
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++  }
++  
++  //Check bounds
++  code.push("if(less<index1&&great>index5){")
++  
++    walkPointer("less", 1, "++less")
++    walkPointer("great", 2, "--great")
++  
++    code.push("for(k=less;k<=great;++k){")
++      comparePivot("comp_pivot1", "k", 1)
++      code.push("if(comp_pivot1===0){")
++        code.push("if(k!==less){")
++          swapElements("k", "less")
++        code.push("}")
++        code.push("++less")
++      code.push("}else{")
++        comparePivot("comp_pivot2", "k", 2)
++        code.push("if(comp_pivot2===0){")
++          code.push("while(true){")
++            comparePivot("comp", "great", 2)
++            code.push("if(comp===0){")
++              code.push("if(--great<k){break}")
++              code.push("continue")
++            code.push("}else{")
++              comparePivot("comp", "great", 1)
++              code.push("if(comp<0){")
++                tripleSwap("k", "less", "great")
++              code.push("}else{")
++                swapAndDecrement("k", "great")
++              code.push("}")
++              code.push("break")
++            code.push("}")
++          code.push("}")
++        code.push("}")
++      code.push("}")
++    code.push("}")
++  code.push("}")
++  
++  //Clean up and do a final sorting pass
++  cleanUp()
++  doSort("less", "great")
++ 
++  //Close off main loop
++  code.push("}return " + funcName)
++  
++  //Compile and link
++  if(order.length > 1 && allocator) {
++    var compiled = new Function("insertionSort", "malloc", "free", code.join("\n"))
++    return compiled(insertionSort, allocator[0], allocator[1])
++  }
++  var compiled = new Function("insertionSort", code.join("\n"))
++  return compiled(insertionSort)
++}
++
++function compileSort(order, dtype) {
++  var code = ["'use strict'"]
++  var funcName = ["ndarraySortWrapper", order.join("d"), dtype].join("")
++  var funcArgs = [ "array" ]
++  
++  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
++  
++  //Unpack local variables from array
++  var vars = ["data=array.data,offset=array.offset|0,shape=array.shape,stride=array.stride"]
++  for(var i=0; i<order.length; ++i) {
++    vars.push(["s",i,"=stride[",i,"]|0,n",i,"=shape[",i,"]|0"].join(""))
++  }
++  
++  var scratch_stride = new Array(order.length)
++  var nprod = []
++  for(var i=0; i<order.length; ++i) {
++    var k = order[i]
++    if(k === 0) {
++      continue
+     }
+-  },
+-  "layout_raster": {
+-    "visibility": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "visible",
+-        "none"
+-      ],
+-      "default": "visible",
+-      "doc": "The display of this layer. `none` hides this layer."
++    if(nprod.length === 0) {
++      scratch_stride[k] = "1"
++    } else {
++      scratch_stride[k] = nprod.join("*")
+     }
+-  },
+-  "filter": {
+-    "type": "array",
+-    "value": "*",
+-    "doc": "A filter selects specific features from a layer."
+-  },
+-  "filter_operator": {
+-    "type": "enum",
+-    "values": [
+-      "==",
+-      "!=",
+-      ">",
+-      ">=",
+-      "<",
+-      "<=",
+-      "in",
+-      "!in",
+-      "all",
+-      "any",
+-      "none",
+-      "has",
+-      "!has"
+-    ],
+-    "doc": "The filter operator."
+-  },
+-  "geometry_type": {
+-    "type": "enum",
+-    "values": [
+-      "Point",
+-      "LineString",
+-      "Polygon"
+-    ],
+-    "doc": "The geometry type for the filter to select."
+-  },
+-  "color_operation": {
+-    "type": "enum",
+-    "values": [
+-      "lighten",
+-      "saturate",
+-      "spin",
+-      "fade",
+-      "mix"
+-    ],
+-    "doc": "A color operation to apply."
+-  },
+-  "function": {
+-    "stops": {
+-      "type": "array",
+-      "required": true,
+-      "doc": "An array of stops.",
+-      "value": "function_stop"
+-    },
+-    "base": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "doc": "The exponential base of the interpolation curve. It controls the rate at which the result increases. Higher values make the result increase more towards the high end of the range. With `1` the stops are interpolated linearly."
+-    },
+-    "property": {
+-      "type": "string",
+-      "doc": "The name of a global property or feature property to use as the function input.",
+-      "default": "$zoom"
+-    },
+-    "type": {
+-      "type": "enum",
+-      "values": [
+-          "exponential",
+-          "interval",
+-          "categorical"
+-      ],
+-      "doc": "The interpolation strategy to use in function evaluation.",
+-      "default": "exponential"
++    nprod.push("n"+k)
++  }
++  
++  var p = -1, q = -1
++  for(var i=0; i<order.length; ++i) {
++    var j = order[i]
++    if(j !== 0) {
++      if(p > 0) {
++        vars.push(["d",j,"=s",j,"-d",p,"*n",p].join(""))
++      } else {
++        vars.push(["d",j,"=s",j].join(""))
++      }
++      p = j
+     }
+-  },
+-  "function_stop": {
+-    "type": "array",
+-    "minimum": 0,
+-    "maximum": 22,
+-    "value": [
+-      "number",
+-      "color"
+-    ],
+-    "length": 2,
+-    "doc": "Zoom level and value pair."
+-  },
+-  "paint": [
+-    "paint_fill",
+-    "paint_line",
+-    "paint_circle",
+-    "paint_symbol",
+-    "paint_raster",
+-    "paint_background"
+-  ],
+-  "paint_fill": {
+-    "fill-antialias": {
+-      "type": "boolean",
+-      "function": "piecewise-constant",
+-      "default": true,
+-      "doc": "Whether or not the fill should be antialiased."
+-    },
+-    "fill-opacity": {
+-      "type": "number",
+-      "function": "interpolated",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "doc": "The opacity given to the fill color.",
+-      "transition": true
+-    },
+-    "fill-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "doc": "The color of the fill.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "fill-pattern"
+-        }
+-      ]
+-    },
+-    "fill-outline-color": {
+-      "type": "color",
+-      "doc": "The outline color of the fill. Matches the value of `fill-color` if unspecified.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "fill-pattern"
+-        },
+-        {
+-          "fill-antialias": true
+-        }
+-      ]
+-    },
+-    "fill-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."
+-    },
+-    "fill-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
+-      "default": "map",
+-      "requires": [
+-        "fill-translate"
+-      ]
+-    },
+-    "fill-pattern": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "transition": true,
+-      "doc": "Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512)."
++    var k = order.length-1-i
++    if(k !== 0) {
++      if(q > 0) {
++        vars.push(["e",k,"=s",k,"-e",q,"*n",q,
++                  ",f",k,"=",scratch_stride[k],"-f",q,"*n",q].join(""))
++      } else {
++        vars.push(["e",k,"=s",k,",f",k,"=",scratch_stride[k]].join(""))
++      }
++      q = k
+     }
+-  },
+-  "paint_line": {
+-    "line-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the line will be drawn.",
+-      "function": "interpolated",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "transition": true
+-    },
+-    "line-color": {
+-      "type": "color",
+-      "doc": "The color with which the line will be drawn.",
+-      "default": "#000000",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "line-pattern"
+-        }
+-      ]
+-    },
+-    "line-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."
+-    },
+-    "line-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
+-      "default": "map",
+-      "requires": [
+-        "line-translate"
+-      ]
+-    },
+-    "line-width": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Stroke thickness."
+-    },
+-    "line-gap-width": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "doc": "Draws a line casing outside of a line's actual path. Value indicates the width of the inner gap.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels"
+-    },
+-    "line-offset": {
+-      "type": "number",
+-      "default": 0,
+-      "doc": "The line's offset perpendicular to its direction. Values may be positive or negative, where positive indicates \"rightwards\" (if you were moving in the direction of the line) and negative indicates \"leftwards.\"",
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels"
+-    },
+-    "line-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Blur applied to the line, in pixels."
+-    },
+-    "line-dasharray": {
+-      "type": "array",
+-      "value": "number",
+-      "function": "piecewise-constant",
+-      "doc": "Specifies the lengths of the alternating dashes and gaps that form the dash pattern. The lengths are later scaled by the line width. To convert a dash length to pixels, multiply the length by the current line width.",
+-      "minimum": 0,
+-      "transition": true,
+-      "units": "line widths",
+-      "requires": [
+-        {
+-          "!": "line-pattern"
+-        }
+-      ]
+-    },
+-    "line-pattern": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "transition": true,
+-      "doc": "Name of image in sprite to use for drawing image lines. For seamless patterns, image width must be a factor of two (2, 4, 8, ..., 512)."
++  }
++  
++  //Declare local variables
++  code.push("var " + vars.join(","))
++  
++  //Create arguments for subroutine
++  var sortArgs = ["0", "n0-1", "data", "offset"].concat(shapeArgs(order.length))
++  
++  //Call main sorting routine
++  code.push([
++    "if(n0<=",INSERTION_SORT_THRESHOLD,"){",
++      "insertionSort(", sortArgs.join(","), ")}else{",
++      "quickSort(", sortArgs.join(","),
++    ")}"
++  ].join(""))
++  
++  //Return
++  code.push("}return " + funcName)
++  
++  //Link everything together
++  var result = new Function("insertionSort", "quickSort", code.join("\n"))
++  var insertionSort = createInsertionSort(order, dtype)
++  var quickSort = createQuickSort(order, dtype, insertionSort)
++  return result(insertionSort, quickSort)
++}
++
++module.exports = compileSort
++},{"typedarray-pool":449}],383:[function(require,module,exports){
++"use strict"
++
++var compile = require("./lib/compile_sort.js")
++var CACHE = {}
++
++function sort(array) {
++  var order = array.order
++  var dtype = array.dtype
++  var typeSig = [order, dtype ]
++  var typeName = typeSig.join(":")
++  var compiled = CACHE[typeName]
++  if(!compiled) {
++    CACHE[typeName] = compiled = compile(order, dtype)
++  }
++  compiled(array)
++  return array
++}
++
++module.exports = sort
++},{"./lib/compile_sort.js":382}],384:[function(require,module,exports){
++'use strict'
++
++var interp  = require('ndarray-linear-interpolate')
++
++
++var do_warp = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=new Array(_inline_9_arg4_)}","args":[{"name":"_inline_9_arg0_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_9_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_9_arg2_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_9_arg3_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_9_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_10_arg2_(this_warped,_inline_10_arg0_),_inline_10_arg1_=_inline_10_arg3_.apply(void 0,this_warped)}","args":[{"name":"_inline_10_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_10_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_10_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_10_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_10_arg4_","lvalue":false,"rvalue":false,"count":0}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warpND","blockSize":64})
++
++var do_warp_1 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_13_arg2_(this_warped,_inline_13_arg0_),_inline_13_arg1_=_inline_13_arg3_(_inline_13_arg4_,this_warped[0])}","args":[{"name":"_inline_13_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_13_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_13_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_13_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_13_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp1D","blockSize":64})
++
++var do_warp_2 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_16_arg2_(this_warped,_inline_16_arg0_),_inline_16_arg1_=_inline_16_arg3_(_inline_16_arg4_,this_warped[0],this_warped[1])}","args":[{"name":"_inline_16_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_16_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp2D","blockSize":64})
++
++var do_warp_3 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_19_arg2_(this_warped,_inline_19_arg0_),_inline_19_arg1_=_inline_19_arg3_(_inline_19_arg4_,this_warped[0],this_warped[1],this_warped[2])}","args":[{"name":"_inline_19_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_19_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_19_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_19_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_19_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp3D","blockSize":64})
++
++module.exports = function warp(dest, src, func) {
++  switch(src.shape.length) {
++    case 1:
++      do_warp_1(dest, func, interp.d1, src)
++      break
++    case 2:
++      do_warp_2(dest, func, interp.d2, src)
++      break
++    case 3:
++      do_warp_3(dest, func, interp.d3, src)
++      break
++    default:
++      do_warp(dest, func, interp.bind(undefined, src), src.shape.length)
++      break
++  }
++  return dest
++}
++
++},{"cwise/lib/wrapper":89,"ndarray-linear-interpolate":378}],385:[function(require,module,exports){
++var iota = require("iota-array")
++var isBuffer = require("is-buffer")
++
++var hasTypedArrays  = ((typeof Float64Array) !== "undefined")
++
++function compare1st(a, b) {
++  return a[0] - b[0]
++}
++
++function order() {
++  var stride = this.stride
++  var terms = new Array(stride.length)
++  var i
++  for(i=0; i<terms.length; ++i) {
++    terms[i] = [Math.abs(stride[i]), i]
++  }
++  terms.sort(compare1st)
++  var result = new Array(terms.length)
++  for(i=0; i<result.length; ++i) {
++    result[i] = terms[i][1]
++  }
++  return result
++}
++
++function compileConstructor(dtype, dimension) {
++  var className = ["View", dimension, "d", dtype].join("")
++  if(dimension < 0) {
++    className = "View_Nil" + dtype
++  }
++  var useGetters = (dtype === "generic")
++
++  if(dimension === -1) {
++    //Special case for trivial arrays
++    var code =
++      "function "+className+"(a){this.data=a;};\
++var proto="+className+".prototype;\
++proto.dtype='"+dtype+"';\
++proto.index=function(){return -1};\
++proto.size=0;\
++proto.dimension=-1;\
++proto.shape=proto.stride=proto.order=[];\
++proto.lo=proto.hi=proto.transpose=proto.step=\
++function(){return new "+className+"(this.data);};\
++proto.get=proto.set=function(){};\
++proto.pick=function(){return null};\
++return function construct_"+className+"(a){return new "+className+"(a);}"
++    var procedure = new Function(code)
++    return procedure()
++  } else if(dimension === 0) {
++    //Special case for 0d arrays
++    var code =
++      "function "+className+"(a,d) {\
++this.data = a;\
++this.offset = d\
++};\
++var proto="+className+".prototype;\
++proto.dtype='"+dtype+"';\
++proto.index=function(){return this.offset};\
++proto.dimension=0;\
++proto.size=1;\
++proto.shape=\
++proto.stride=\
++proto.order=[];\
++proto.lo=\
++proto.hi=\
++proto.transpose=\
++proto.step=function "+className+"_copy() {\
++return new "+className+"(this.data,this.offset)\
++};\
++proto.pick=function "+className+"_pick(){\
++return TrivialArray(this.data);\
++};\
++proto.valueOf=proto.get=function "+className+"_get(){\
++return "+(useGetters ? "this.data.get(this.offset)" : "this.data[this.offset]")+
++"};\
++proto.set=function "+className+"_set(v){\
++return "+(useGetters ? "this.data.set(this.offset,v)" : "this.data[this.offset]=v")+"\
++};\
++return function construct_"+className+"(a,b,c,d){return new "+className+"(a,d)}"
++    var procedure = new Function("TrivialArray", code)
++    return procedure(CACHED_CONSTRUCTORS[dtype][0])
++  }
++
++  var code = ["'use strict'"]
++
++  //Create constructor for view
++  var indices = iota(dimension)
++  var args = indices.map(function(i) { return "i"+i })
++  var index_str = "this.offset+" + indices.map(function(i) {
++        return "this.stride[" + i + "]*i" + i
++      }).join("+")
++  var shapeArg = indices.map(function(i) {
++      return "b"+i
++    }).join(",")
++  var strideArg = indices.map(function(i) {
++      return "c"+i
++    }).join(",")
++  code.push(
++    "function "+className+"(a," + shapeArg + "," + strideArg + ",d){this.data=a",
++      "this.shape=[" + shapeArg + "]",
++      "this.stride=[" + strideArg + "]",
++      "this.offset=d|0}",
++    "var proto="+className+".prototype",
++    "proto.dtype='"+dtype+"'",
++    "proto.dimension="+dimension)
++
++  //view.size:
++  code.push("Object.defineProperty(proto,'size',{get:function "+className+"_size(){\
++return "+indices.map(function(i) { return "this.shape["+i+"]" }).join("*"),
++"}})")
++
++  //view.order:
++  if(dimension === 1) {
++    code.push("proto.order=[0]")
++  } else {
++    code.push("Object.defineProperty(proto,'order',{get:")
++    if(dimension < 4) {
++      code.push("function "+className+"_order(){")
++      if(dimension === 2) {
++        code.push("return (Math.abs(this.stride[0])>Math.abs(this.stride[1]))?[1,0]:[0,1]}})")
++      } else if(dimension === 3) {
++        code.push(
++"var s0=Math.abs(this.stride[0]),s1=Math.abs(this.stride[1]),s2=Math.abs(this.stride[2]);\
++if(s0>s1){\
++if(s1>s2){\
++return [2,1,0];\
++}else if(s0>s2){\
++return [1,2,0];\
++}else{\
++return [1,0,2];\
++}\
++}else if(s0>s2){\
++return [2,0,1];\
++}else if(s2>s1){\
++return [0,1,2];\
++}else{\
++return [0,2,1];\
++}}})")
++      }
++    } else {
++      code.push("ORDER})")
+     }
+-  },
+-  "paint_circle": {
+-    "circle-radius": {
+-      "type": "number",
+-      "default": 5,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Circle radius."
+-    },
+-    "circle-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "doc": "The color of the circle.",
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "circle-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "doc": "Amount to blur the circle. 1 blurs the circle such that only the centerpoint is full opacity.",
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "circle-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the circle will be drawn.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "circle-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [0, 0],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively."
+-    },
+-    "circle-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen)",
+-      "default": "map",
+-      "requires": [
+-        "circle-translate"
+-      ]
++  }
++
++  //view.set(i0, ..., v):
++  code.push(
++"proto.set=function "+className+"_set("+args.join(",")+",v){")
++  if(useGetters) {
++    code.push("return this.data.set("+index_str+",v)}")
++  } else {
++    code.push("return this.data["+index_str+"]=v}")
++  }
++
++  //view.get(i0, ...):
++  code.push("proto.get=function "+className+"_get("+args.join(",")+"){")
++  if(useGetters) {
++    code.push("return this.data.get("+index_str+")}")
++  } else {
++    code.push("return this.data["+index_str+"]}")
++  }
++
++  //view.index:
++  code.push(
++    "proto.index=function "+className+"_index(", args.join(), "){return "+index_str+"}")
++
++  //view.hi():
++  code.push("proto.hi=function "+className+"_hi("+args.join(",")+"){return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return ["(typeof i",i,"!=='number'||i",i,"<0)?this.shape[", i, "]:i", i,"|0"].join("")
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "this.stride["+i + "]"
++    }).join(",")+",this.offset)}")
++
++  //view.lo():
++  var a_vars = indices.map(function(i) { return "a"+i+"=this.shape["+i+"]" })
++  var c_vars = indices.map(function(i) { return "c"+i+"=this.stride["+i+"]" })
++  code.push("proto.lo=function "+className+"_lo("+args.join(",")+"){var b=this.offset,d=0,"+a_vars.join(",")+","+c_vars.join(","))
++  for(var i=0; i<dimension; ++i) {
++    code.push(
++"if(typeof i"+i+"==='number'&&i"+i+">=0){\
++d=i"+i+"|0;\
++b+=c"+i+"*d;\
++a"+i+"-=d}")
++  }
++  code.push("return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return "a"+i
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "c"+i
++    }).join(",")+",b)}")
++
++  //view.step():
++  code.push("proto.step=function "+className+"_step("+args.join(",")+"){var "+
++    indices.map(function(i) {
++      return "a"+i+"=this.shape["+i+"]"
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "b"+i+"=this.stride["+i+"]"
++    }).join(",")+",c=this.offset,d=0,ceil=Math.ceil")
++  for(var i=0; i<dimension; ++i) {
++    code.push(
++"if(typeof i"+i+"==='number'){\
++d=i"+i+"|0;\
++if(d<0){\
++c+=b"+i+"*(a"+i+"-1);\
++a"+i+"=ceil(-a"+i+"/d)\
++}else{\
++a"+i+"=ceil(a"+i+"/d)\
++}\
++b"+i+"*=d\
++}")
++  }
++  code.push("return new "+className+"(this.data,"+
++    indices.map(function(i) {
++      return "a" + i
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "b" + i
++    }).join(",")+",c)}")
++
++  //view.transpose():
++  var tShape = new Array(dimension)
++  var tStride = new Array(dimension)
++  for(var i=0; i<dimension; ++i) {
++    tShape[i] = "a[i"+i+"]"
++    tStride[i] = "b[i"+i+"]"
++  }
++  code.push("proto.transpose=function "+className+"_transpose("+args+"){"+
++    args.map(function(n,idx) { return n + "=(" + n + "===undefined?" + idx + ":" + n + "|0)"}).join(";"),
++    "var a=this.shape,b=this.stride;return new "+className+"(this.data,"+tShape.join(",")+","+tStride.join(",")+",this.offset)}")
++
++  //view.pick():
++  code.push("proto.pick=function "+className+"_pick("+args+"){var a=[],b=[],c=this.offset")
++  for(var i=0; i<dimension; ++i) {
++    code.push("if(typeof i"+i+"==='number'&&i"+i+">=0){c=(c+this.stride["+i+"]*i"+i+")|0}else{a.push(this.shape["+i+"]);b.push(this.stride["+i+"])}")
++  }
++  code.push("var ctor=CTOR_LIST[a.length+1];return ctor(this.data,a,b,c)}")
++
++  //Add return statement
++  code.push("return function construct_"+className+"(data,shape,stride,offset){return new "+className+"(data,"+
++    indices.map(function(i) {
++      return "shape["+i+"]"
++    }).join(",")+","+
++    indices.map(function(i) {
++      return "stride["+i+"]"
++    }).join(",")+",offset)}")
++
++  //Compile procedure
++  var procedure = new Function("CTOR_LIST", "ORDER", code.join("\n"))
++  return procedure(CACHED_CONSTRUCTORS[dtype], order)
++}
++
++function arrayDType(data) {
++  if(isBuffer(data)) {
++    return "buffer"
++  }
++  if(hasTypedArrays) {
++    switch(Object.prototype.toString.call(data)) {
++      case "[object Float64Array]":
++        return "float64"
++      case "[object Float32Array]":
++        return "float32"
++      case "[object Int8Array]":
++        return "int8"
++      case "[object Int16Array]":
++        return "int16"
++      case "[object Int32Array]":
++        return "int32"
++      case "[object Uint8Array]":
++        return "uint8"
++      case "[object Uint16Array]":
++        return "uint16"
++      case "[object Uint32Array]":
++        return "uint32"
++      case "[object Uint8ClampedArray]":
++        return "uint8_clamped"
+     }
+-  },
+-  "paint_symbol": {
+-    "icon-opacity": {
+-      "doc": "The opacity at which the icon will be drawn.",
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "function": "interpolated",
+-      "transition": true,
+-      "doc": "The color of the icon. This can only be used with sdf icons.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-halo-color": {
+-      "type": "color",
+-      "default": "rgba(0, 0, 0, 0)",
+-      "function": "interpolated",
+-      "transition": true,
+-      "doc": "The color of the icon's halo. Icon halos can only be used with sdf icons.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-halo-width": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance of halo to the icon outline.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-halo-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Fade out the halo towards the outside.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
+-      "requires": [
+-        "icon-image"
+-      ]
+-    },
+-    "icon-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
+-      "default": "map",
+-      "requires": [
+-        "icon-image",
+-        "icon-translate"
+-      ]
+-    },
+-    "text-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the text will be drawn.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-color": {
+-      "type": "color",
+-      "doc": "The color with which the text will be drawn.",
+-      "default": "#000000",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-halo-color": {
+-      "type": "color",
+-      "default": "rgba(0, 0, 0, 0)",
+-      "function": "interpolated",
+-      "transition": true,
+-      "doc": "The color of the text's halo, which helps it stand out from backgrounds.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-halo-width": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance of halo to the font outline. Max text halo width is 1/4 of the font-size.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-halo-blur": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "The halo's fadeout distance towards the outside.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-translate": {
+-      "type": "array",
+-      "value": "number",
+-      "length": 2,
+-      "default": [
+-        0,
+-        0
+-      ],
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "pixels",
+-      "doc": "Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.",
+-      "requires": [
+-        "text-field"
+-      ]
+-    },
+-    "text-translate-anchor": {
+-      "type": "enum",
+-      "function": "piecewise-constant",
+-      "values": [
+-        "map",
+-        "viewport"
+-      ],
+-      "doc": "Control whether the translation is relative to the map (north) or viewport (screen).",
+-      "default": "map",
+-      "requires": [
+-        "text-field",
+-        "text-translate"
+-      ]
++  }
++  if(Array.isArray(data)) {
++    return "array"
++  }
++  return "generic"
++}
++
++var CACHED_CONSTRUCTORS = {
++  "float32":[],
++  "float64":[],
++  "int8":[],
++  "int16":[],
++  "int32":[],
++  "uint8":[],
++  "uint16":[],
++  "uint32":[],
++  "array":[],
++  "uint8_clamped":[],
++  "buffer":[],
++  "generic":[]
++}
++
++;(function() {
++  for(var id in CACHED_CONSTRUCTORS) {
++    CACHED_CONSTRUCTORS[id].push(compileConstructor(id, -1))
++  }
++});
++
++function wrappedNDArrayCtor(data, shape, stride, offset) {
++  if(data === undefined) {
++    var ctor = CACHED_CONSTRUCTORS.array[0]
++    return ctor([])
++  } else if(typeof data === "number") {
++    data = [data]
++  }
++  if(shape === undefined) {
++    shape = [ data.length ]
++  }
++  var d = shape.length
++  if(stride === undefined) {
++    stride = new Array(d)
++    for(var i=d-1, sz=1; i>=0; --i) {
++      stride[i] = sz
++      sz *= shape[i]
+     }
+-  },
+-  "paint_raster": {
+-    "raster-opacity": {
+-      "type": "number",
+-      "doc": "The opacity at which the image will be drawn.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "raster-hue-rotate": {
+-      "type": "number",
+-      "default": 0,
+-      "period": 360,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "degrees",
+-      "doc": "Rotates hues around the color wheel."
+-    },
+-    "raster-brightness-min": {
+-      "type": "number",
+-      "function": "interpolated",
+-      "doc": "Increase or reduce the brightness of the image. The value is the minimum brightness.",
+-      "default": 0,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "transition": true
+-    },
+-    "raster-brightness-max": {
+-      "type": "number",
+-      "function": "interpolated",
+-      "doc": "Increase or reduce the brightness of the image. The value is the maximum brightness.",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "transition": true
+-    },
+-    "raster-saturation": {
+-      "type": "number",
+-      "doc": "Increase or reduce the saturation of the image.",
+-      "default": 0,
+-      "minimum": -1,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "raster-contrast": {
+-      "type": "number",
+-      "doc": "Increase or reduce the contrast of the image.",
+-      "default": 0,
+-      "minimum": -1,
+-      "maximum": 1,
+-      "function": "interpolated",
+-      "transition": true
+-    },
+-    "raster-fade-duration": {
+-      "type": "number",
+-      "default": 300,
+-      "minimum": 0,
+-      "function": "interpolated",
+-      "transition": true,
+-      "units": "milliseconds",
+-      "doc": "Fade duration when a new tile is added."
++  }
++  if(offset === undefined) {
++    offset = 0
++    for(var i=0; i<d; ++i) {
++      if(stride[i] < 0) {
++        offset -= (shape[i]-1)*stride[i]
++      }
++    }
++  }
++  var dtype = arrayDType(data)
++  var ctor_list = CACHED_CONSTRUCTORS[dtype]
++  while(ctor_list.length <= d+1) {
++    ctor_list.push(compileConstructor(dtype, ctor_list.length-1))
++  }
++  var ctor = ctor_list[d+1]
++  return ctor(data, shape, stride, offset)
++}
++
++module.exports = wrappedNDArrayCtor
++
++},{"iota-array":227,"is-buffer":228}],386:[function(require,module,exports){
++"use strict"
++
++var doubleBits = require("double-bits")
++
++var SMALLEST_DENORM = Math.pow(2, -1074)
++var UINT_MAX = (-1)>>>0
++
++module.exports = nextafter
++
++function nextafter(x, y) {
++  if(isNaN(x) || isNaN(y)) {
++    return NaN
++  }
++  if(x === y) {
++    return x
++  }
++  if(x === 0) {
++    if(y < 0) {
++      return -SMALLEST_DENORM
++    } else {
++      return SMALLEST_DENORM
+     }
+-  },
+-  "paint_background": {
+-    "background-color": {
+-      "type": "color",
+-      "default": "#000000",
+-      "doc": "The color with which the background will be drawn.",
+-      "function": "interpolated",
+-      "transition": true,
+-      "requires": [
+-        {
+-          "!": "background-pattern"
+-        }
+-      ]
+-    },
+-    "background-pattern": {
+-      "type": "string",
+-      "function": "piecewise-constant",
+-      "transition": true,
+-      "doc": "Name of image in sprite to use for drawing an image background. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512)."
+-    },
+-    "background-opacity": {
+-      "type": "number",
+-      "default": 1,
+-      "minimum": 0,
+-      "maximum": 1,
+-      "doc": "The opacity at which the background will be drawn.",
+-      "function": "interpolated",
+-      "transition": true
++  }
++  var hi = doubleBits.hi(x)
++  var lo = doubleBits.lo(x)
++  if((y > x) === (x > 0)) {
++    if(lo === UINT_MAX) {
++      hi += 1
++      lo = 0
++    } else {
++      lo += 1
+     }
+-  },
+-  "transition": {
+-    "duration": {
+-      "type": "number",
+-      "default": 300,
+-      "minimum": 0,
+-      "units": "milliseconds",
+-      "doc": "Time allotted for transitions to complete."
+-    },
+-    "delay": {
+-      "type": "number",
+-      "default": 0,
+-      "minimum": 0,
+-      "units": "milliseconds",
+-      "doc": "Length of time before a transition begins."
++  } else {
++    if(lo === 0) {
++      lo = UINT_MAX
++      hi -= 1
++    } else {
++      lo -= 1
+     }
+   }
++  return doubleBits.pack(lo, hi)
+ }
++},{"double-bits":92}],387:[function(require,module,exports){
++var DEFAULT_NORMALS_EPSILON = 1e-6;
++var DEFAULT_FACE_EPSILON = 1e-6;
+ 
+-},{}],400:[function(require,module,exports){
+-module.exports={"$version":8,"$root":{"version":{"required":true,"type":"enum","values":[8]},"name":{"type":"string"},"metadata":{"type":"*"},"center":{"type":"array","value":"number"},"zoom":{"type":"number"},"bearing":{"type":"number","default":0,"period":360,"units":"degrees"},"pitch":{"type":"number","default":0,"units":"degrees"},"sources":{"required":true,"type":"sources"},"sprite":{"type":"string"},"glyphs":{"type":"string"},"transition":{"type":"transition"},"layers":{"required":true,"type":"array","value":"layer"}},"sources":{"*":{"type":"source"}},"source":["source_tile","source_geojson","source_video","source_image"],"source_tile":{"type":{"required":true,"type":"enum","values":["vector","raster"]},"url":{"type":"string"},"tiles":{"type":"array","value":"string"},"minzoom":{"type":"number","default":0},"maxzoom":{"type":"number","default":22},"tileSize":{"type":"number","default":512,"units":"pixels"},"*":{"type":"*"}},"source_geojson":{"type":{"required":true,"type":"enum","values":["geojson"]},"data":{"type":"*"},"maxzoom":{"type":"number","default":14},"buffer":{"type":"number","default":64},"tolerance":{"type":"number","default":3},"cluster":{"type":"boolean","default":false},"clusterRadius":{"type":"number","default":400},"clusterMaxZoom":{"type":"number"}},"source_video":{"type":{"required":true,"type":"enum","values":["video"]},"urls":{"required":true,"type":"array","value":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"source_image":{"type":{"required":true,"type":"enum","values":["image"]},"url":{"required":true,"type":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"layer":{"id":{"type":"string","required":true},"type":{"type":"enum","values":["fill","line","symbol","circle","raster","background"]},"metadata":{"type":"*"},"ref":{"type":"string"},"source":{"type":"string"},"source-layer":{"type":"string"},"minzoom":{"type":"number","minimum":0,"maximum":22},"maxzoom":{"type":"number","minimum":0,"maximum":22},"interactive":{"type":"boolean","default":false},"filter":{"type":"filter"},"layout":{"type":"layout"},"paint":{"type":"paint"},"paint.*":{"type":"paint"}},"layout":["layout_fill","layout_line","layout_circle","layout_symbol","layout_raster","layout_background"],"layout_background":{"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_fill":{"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_circle":{"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_line":{"line-cap":{"type":"enum","function":"piecewise-constant","values":["butt","round","square"],"default":"butt"},"line-join":{"type":"enum","function":"piecewise-constant","values":["bevel","round","miter"],"default":"miter"},"line-miter-limit":{"type":"number","default":2,"function":"interpolated","requires":[{"line-join":"miter"}]},"line-round-limit":{"type":"number","default":1.05,"function":"interpolated","requires":[{"line-join":"round"}]},"visibility":{"type":"enum","function":"piecewise-constant","values":["visible","none"],"default":"visible"}},"layout_symbol":{"symbol-placement":{"type":"enum","function":"piecewise-constant","values":["point","line"],"default":"point"},"symbol-spacing":{"type":"number","default":250,"minimum":1,"function":"interpolated","units":"pixels","requires":[{"symbol-placement":"line"}]},"symbol-avoid-edges":{"type":"boolean","function":"piecewise-constant","default":false},"icon-allow-overlap":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image"]},"icon-ignore-placement":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image"]},"icon-optional":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image","text-field"]},"icon-rotation-alignment":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"viewport","requires":["icon-image"]},"icon-size":{"type":"number","default":1,"minimum":0,"function":"interpolated","requires":["icon-image"]},"icon-image":{"type":"string","function":"piecewise-constant","tokens":true},"icon-rotate":{"type":"number","default":0,"period":360,"function":"interpolated","units":"degrees","requires":["icon-image"]},"icon-padding":{"type":"number","default":2,"minimum":0,"function":"interpolated","units":"pixels","requires":["icon-image"]},"icon-keep-upright":{"type":"boolean","function":"piecewise-constant","default":false,"requires":["icon-image",{"icon-rotation-alignment":"map"},{"symbol-placement":"line"}]},"icon-offset":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","requires":["icon-image"]},"text-rotation-alignment":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"viewport","requires":["text-field"]},"text-field":{"type":"string","function":"piecewise-constant","default":"","tokens":true},"text-font":{"type":"array","value":"string","function":"piecewise-constant","default":["Open Sans Regular","Arial Unicode MS 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function":"piecewise-constant","minimum":0,"transition":true,"units":"line widths","requires":[{"!":"line-pattern"}]},"line-pattern":{"type":"string","function":"piecewise-constant","transition":true}},"paint_circle":{"circle-radius":{"type":"number","default":5,"minimum":0,"function":"interpolated","transition":true,"units":"pixels"},"circle-color":{"type":"color","default":"#000000","function":"interpolated","transition":true},"circle-blur":{"type":"number","default":0,"function":"interpolated","transition":true},"circle-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","transition":true},"circle-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","transition":true,"units":"pixels"},"circle-translate-anchor":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"map","requires":["circle-translate"]}},"paint_symbol":{"icon-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","transition":true,"requires":["icon-image"]},"icon-color":{"type":"color","default":"#000000","function":"interpolated","transition":true,"requires":["icon-image"]},"icon-halo-color":{"type":"color","default":"rgba(0, 0, 0, 0)","function":"interpolated","transition":true,"requires":["icon-image"]},"icon-halo-width":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels","requires":["icon-image"]},"icon-halo-blur":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels","requires":["icon-image"]},"icon-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","transition":true,"units":"pixels","requires":["icon-image"]},"icon-translate-anchor":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"map","requires":["icon-image","icon-translate"]},"text-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","transition":true,"requires":["text-field"]},"text-color":{"type":"color","default":"#000000","function":"interpolated","transition":true,"requires":["text-field"]},"text-halo-color":{"type":"color","default":"rgba(0, 0, 0, 0)","function":"interpolated","transition":true,"requires":["text-field"]},"text-halo-width":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels","requires":["text-field"]},"text-halo-blur":{"type":"number","default":0,"minimum":0,"function":"interpolated","transition":true,"units":"pixels","requires":["text-field"]},"text-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","transition":true,"units":"pixels","requires":["text-field"]},"text-translate-anchor":{"type":"enum","function":"piecewise-constant","values":["map","viewport"],"default":"map","requires":["text-field","text-translate"]}},"paint_raster":{"raster-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","transition":true},"raster-hue-rotate":{"type":"number","default":0,"period":360,"function":"interpolated","transition":true,"units":"degrees"},"raster-brightness-min":{"type":"number","function":"interpolated","default":0,"minimum":0,"maximum":1,"transition":true},"raster-brightness-max":{"type":"number","function":"interpolated","default":1,"minimum":0,"maximum":1,"transition":true},"raster-saturation":{"type":"number","default":0,"minimum":-1,"maximum":1,"function":"interpolated","transition":true},"raster-contrast":{"type":"number","default":0,"minimum":-1,"maximum":1,"function":"interpolated","transition":true},"raster-fade-duration":{"type":"number","default":300,"minimum":0,"function":"interpolated","transition":true,"units":"milliseconds"}},"paint_background":{"background-color":{"type":"color","default":"#000000","function":"interpolated","transition":true,"requires":[{"!":"background-pattern"}]},"background-pattern":{"type":"string","function":"piecewise-constant","transition":true},"background-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","transition":true}},"transition":{"duration":{"type":"number","default":300,"minimum":0,"units":"milliseconds"},"delay":{"type":"number","default":0,"minimum":0,"units":"milliseconds"}}}
+-},{}],401:[function(require,module,exports){
+-'use strict';
++//Estimate the vertex normals of a mesh
++exports.vertexNormals = function(faces, positions, specifiedEpsilon) {
+ 
+-// lightweight Buffer shim for pbf browser build
+-// based on code from github.com/feross/buffer (MIT-licensed)
++  var N         = positions.length;
++  var normals   = new Array(N);
++  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_NORMALS_EPSILON : specifiedEpsilon;
+ 
+-module.exports = Buffer;
++  //Initialize normal array
++  for(var i=0; i<N; ++i) {
++    normals[i] = [0.0, 0.0, 0.0];
++  }
+ 
+-var ieee754 = require('ieee754');
++  //Walk over all the faces and add per-vertex contribution to normal weights
++  for(var i=0; i<faces.length; ++i) {
++    var f = faces[i];
++    var p = 0;
++    var c = f[f.length-1];
++    var n = f[0];
++    for(var j=0; j<f.length; ++j) {
+ 
+-var BufferMethods;
++      //Shift indices back
++      p = c;
++      c = n;
++      n = f[(j+1) % f.length];
+ 
+-function Buffer(length) {
+-    var arr;
+-    if (length && length.length) {
+-        arr = length;
+-        length = arr.length;
++      var v0 = positions[p];
++      var v1 = positions[c];
++      var v2 = positions[n];
++
++      //Compute infineteismal arcs
++      var d01 = new Array(3);
++      var m01 = 0.0;
++      var d21 = new Array(3);
++      var m21 = 0.0;
++      for(var k=0; k<3; ++k) {
++        d01[k] = v0[k]  - v1[k];
++        m01   += d01[k] * d01[k];
++        d21[k] = v2[k]  - v1[k];
++        m21   += d21[k] * d21[k];
++      }
++
++      //Accumulate values in normal
++      if(m01 * m21 > epsilon) {
++        var norm = normals[c];
++        var w = 1.0 / Math.sqrt(m01 * m21);
++        for(var k=0; k<3; ++k) {
++          var u = (k+1)%3;
++          var v = (k+2)%3;
++          norm[k] += w * (d21[u] * d01[v] - d21[v] * d01[u]);
++        }
++      }
+     }
+-    var buf = new Uint8Array(length || 0);
+-    if (arr) buf.set(arr);
++  }
+ 
+-    buf.readUInt32LE = BufferMethods.readUInt32LE;
+-    buf.writeUInt32LE = BufferMethods.writeUInt32LE;
+-    buf.readInt32LE = BufferMethods.readInt32LE;
+-    buf.writeInt32LE = BufferMethods.writeInt32LE;
+-    buf.readFloatLE = BufferMethods.readFloatLE;
+-    buf.writeFloatLE = BufferMethods.writeFloatLE;
+-    buf.readDoubleLE = BufferMethods.readDoubleLE;
+-    buf.writeDoubleLE = BufferMethods.writeDoubleLE;
+-    buf.toString = BufferMethods.toString;
+-    buf.write = BufferMethods.write;
+-    buf.slice = BufferMethods.slice;
+-    buf.copy = BufferMethods.copy;
++  //Scale all normals to unit length
++  for(var i=0; i<N; ++i) {
++    var norm = normals[i];
++    var m = 0.0;
++    for(var k=0; k<3; ++k) {
++      m += norm[k] * norm[k];
++    }
++    if(m > epsilon) {
++      var w = 1.0 / Math.sqrt(m);
++      for(var k=0; k<3; ++k) {
++        norm[k] *= w;
++      }
++    } else {
++      for(var k=0; k<3; ++k) {
++        norm[k] = 0.0;
++      }
++    }
++  }
+ 
+-    buf._isBuffer = true;
+-    return buf;
++  //Return the resulting set of patches
++  return normals;
+ }
+ 
+-var lastStr, lastStrEncoded;
++//Compute face normals of a mesh
++exports.faceNormals = function(faces, positions, specifiedEpsilon) {
+ 
+-BufferMethods = {
+-    readUInt32LE: function(pos) {
+-        return ((this[pos]) |
+-            (this[pos + 1] << 8) |
+-            (this[pos + 2] << 16)) +
+-            (this[pos + 3] * 0x1000000);
+-    },
++  var N         = faces.length;
++  var normals   = new Array(N);
++  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_FACE_EPSILON : specifiedEpsilon;
+ 
+-    writeUInt32LE: function(val, pos) {
+-        this[pos] = val;
+-        this[pos + 1] = (val >>> 8);
+-        this[pos + 2] = (val >>> 16);
+-        this[pos + 3] = (val >>> 24);
+-    },
++  for(var i=0; i<N; ++i) {
++    var f = faces[i];
++    var pos = new Array(3);
++    for(var j=0; j<3; ++j) {
++      pos[j] = positions[f[j]];
++    }
+ 
+-    readInt32LE: function(pos) {
+-        return ((this[pos]) |
+-            (this[pos + 1] << 8) |
+-            (this[pos + 2] << 16)) +
+-            (this[pos + 3] << 24);
+-    },
++    var d01 = new Array(3);
++    var d21 = new Array(3);
++    for(var j=0; j<3; ++j) {
++      d01[j] = pos[1][j] - pos[0][j];
++      d21[j] = pos[2][j] - pos[0][j];
++    }
+ 
+-    readFloatLE:  function(pos) { return ieee754.read(this, pos, true, 23, 4); },
+-    readDoubleLE: function(pos) { return ieee754.read(this, pos, true, 52, 8); },
++    var n = new Array(3);
++    var l = 0.0;
++    for(var j=0; j<3; ++j) {
++      var u = (j+1)%3;
++      var v = (j+2)%3;
++      n[j] = d01[u] * d21[v] - d01[v] * d21[u];
++      l += n[j] * n[j];
++    }
++    if(l > epsilon) {
++      l = 1.0 / Math.sqrt(l);
++    } else {
++      l = 0.0;
++    }
++    for(var j=0; j<3; ++j) {
++      n[j] *= l;
++    }
++    normals[i] = n;
++  }
++  return normals;
++}
+ 
+-    writeFloatLE:  function(val, pos) { return ieee754.write(this, val, pos, true, 23, 4); },
+-    writeDoubleLE: function(val, pos) { return ieee754.write(this, val, pos, true, 52, 8); },
+ 
+-    toString: function(encoding, start, end) {
+-        var str = '',
+-            tmp = '';
+ 
+-        start = start || 0;
+-        end = Math.min(this.length, end || this.length);
++},{}],388:[function(require,module,exports){
++'use strict'
+ 
+-        for (var i = start; i < end; i++) {
+-            var ch = this[i];
+-            if (ch <= 0x7F) {
+-                str += decodeURIComponent(tmp) + String.fromCharCode(ch);
+-                tmp = '';
+-            } else {
+-                tmp += '%' + ch.toString(16);
+-            }
+-        }
++module.exports = quatFromFrame
+ 
+-        str += decodeURIComponent(tmp);
++function quatFromFrame(
++  out,
++  rx, ry, rz,
++  ux, uy, uz,
++  fx, fy, fz) {
++  var tr = rx + uy + fz
++  if(l > 0) {
++    var l = Math.sqrt(tr + 1.0)
++    out[0] = 0.5 * (uz - fy) / l
++    out[1] = 0.5 * (fx - rz) / l
++    out[2] = 0.5 * (ry - uy) / l
++    out[3] = 0.5 * l
++  } else {
++    var tf = Math.max(rx, uy, fz)
++    var l = Math.sqrt(2 * tf - tr + 1.0)
++    if(rx >= tf) {
++      //x y z  order
++      out[0] = 0.5 * l
++      out[1] = 0.5 * (ux + ry) / l
++      out[2] = 0.5 * (fx + rz) / l
++      out[3] = 0.5 * (uz - fy) / l
++    } else if(uy >= tf) {
++      //y z x  order
++      out[0] = 0.5 * (ry + ux) / l
++      out[1] = 0.5 * l
++      out[2] = 0.5 * (fy + uz) / l
++      out[3] = 0.5 * (fx - rz) / l
++    } else {
++      //z x y  order
++      out[0] = 0.5 * (rz + fx) / l
++      out[1] = 0.5 * (uz + fy) / l
++      out[2] = 0.5 * l
++      out[3] = 0.5 * (ry - ux) / l
++    }
++  }
++  return out
++}
++},{}],389:[function(require,module,exports){
++'use strict'
+ 
+-        return str;
+-    },
++module.exports = createOrbitController
+ 
+-    write: function(str, pos) {
+-        var bytes = str === lastStr ? lastStrEncoded : encodeString(str);
+-        for (var i = 0; i < bytes.length; i++) {
+-            this[pos + i] = bytes[i];
+-        }
+-    },
++var filterVector  = require('filtered-vector')
++var lookAt        = require('gl-mat4/lookAt')
++var mat4FromQuat  = require('gl-mat4/fromQuat')
++var invert44      = require('gl-mat4/invert')
++var quatFromFrame = require('./lib/quatFromFrame')
+ 
+-    slice: function(start, end) {
+-        return this.subarray(start, end);
+-    },
++function len3(x,y,z) {
++  return Math.sqrt(Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
++}
+ 
+-    copy: function(buf, pos) {
+-        pos = pos || 0;
+-        for (var i = 0; i < this.length; i++) {
+-            buf[pos + i] = this[i];
+-        }
+-    }
+-};
++function len4(w,x,y,z) {
++  return Math.sqrt(Math.pow(w,2) + Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
++}
+ 
+-BufferMethods.writeInt32LE = BufferMethods.writeUInt32LE;
++function normalize4(out, a) {
++  var ax = a[0]
++  var ay = a[1]
++  var az = a[2]
++  var aw = a[3]
++  var al = len4(ax, ay, az, aw)
++  if(al > 1e-6) {
++    out[0] = ax/al
++    out[1] = ay/al
++    out[2] = az/al
++    out[3] = aw/al
++  } else {
++    out[0] = out[1] = out[2] = 0.0
++    out[3] = 1.0
++  }
++}
+ 
+-Buffer.byteLength = function(str) {
+-    lastStr = str;
+-    lastStrEncoded = encodeString(str);
+-    return lastStrEncoded.length;
+-};
++function OrbitCameraController(initQuat, initCenter, initRadius) {
++  this.radius    = filterVector([initRadius])
++  this.center    = filterVector(initCenter)
++  this.rotation  = filterVector(initQuat)
+ 
+-Buffer.isBuffer = function(buf) {
+-    return !!(buf && buf._isBuffer);
+-};
++  this.computedRadius   = this.radius.curve(0)
++  this.computedCenter   = this.center.curve(0)
++  this.computedRotation = this.rotation.curve(0)
++  this.computedUp       = [0.1,0,0]
++  this.computedEye      = [0.1,0,0]
++  this.computedMatrix   = [0.1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+ 
+-function encodeString(str) {
+-    var length = str.length,
+-        bytes = [];
++  this.recalcMatrix(0)
++}
+ 
+-    for (var i = 0, c, lead; i < length; i++) {
+-        c = str.charCodeAt(i); // code point
++var proto = OrbitCameraController.prototype
+ 
+-        if (c > 0xD7FF && c < 0xE000) {
++proto.lastT = function() {
++  return Math.max(
++    this.radius.lastT(),
++    this.center.lastT(),
++    this.rotation.lastT())
++}
+ 
+-            if (lead) {
+-                if (c < 0xDC00) {
+-                    bytes.push(0xEF, 0xBF, 0xBD);
+-                    lead = c;
+-                    continue;
++proto.recalcMatrix = function(t) {
++  this.radius.curve(t)
++  this.center.curve(t)
++  this.rotation.curve(t)
+ 
+-                } else {
+-                    c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;
+-                    lead = null;
+-                }
++  var quat = this.computedRotation
++  normalize4(quat, quat)
+ 
+-            } else {
+-                if (c > 0xDBFF || (i + 1 === length)) bytes.push(0xEF, 0xBF, 0xBD);
+-                else lead = c;
++  var mat = this.computedMatrix
++  mat4FromQuat(mat, quat)
+ 
+-                continue;
+-            }
++  var center = this.computedCenter
++  var eye    = this.computedEye
++  var up     = this.computedUp
++  var radius = Math.exp(this.computedRadius[0])
+ 
+-        } else if (lead) {
+-            bytes.push(0xEF, 0xBF, 0xBD);
+-            lead = null;
+-        }
++  eye[0] = center[0] + radius * mat[2]
++  eye[1] = center[1] + radius * mat[6]
++  eye[2] = center[2] + radius * mat[10]
++  up[0] = mat[1]
++  up[1] = mat[5]
++  up[2] = mat[9]
+ 
+-        if (c < 0x80) bytes.push(c);
+-        else if (c < 0x800) bytes.push(c >> 0x6 | 0xC0, c & 0x3F | 0x80);
+-        else if (c < 0x10000) bytes.push(c >> 0xC | 0xE0, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
+-        else bytes.push(c >> 0x12 | 0xF0, c >> 0xC & 0x3F | 0x80, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
++  for(var i=0; i<3; ++i) {
++    var rr = 0.0
++    for(var j=0; j<3; ++j) {
++      rr += mat[i+4*j] * eye[j]
+     }
+-    return bytes;
++    mat[12+i] = -rr
++  }
+ }
+ 
+-},{"ieee754":403}],402:[function(require,module,exports){
+-(function (global){
+-'use strict';
+-
+-module.exports = Pbf;
++proto.getMatrix = function(t, result) {
++  this.recalcMatrix(t)
++  var m = this.computedMatrix
++  if(result) {
++    for(var i=0; i<16; ++i) {
++      result[i] = m[i]
++    }
++    return result
++  }
++  return m
++}
+ 
+-var Buffer = global.Buffer || require('./buffer');
++proto.idle = function(t) {
++  this.center.idle(t)
++  this.radius.idle(t)
++  this.rotation.idle(t)
++}
+ 
+-function Pbf(buf) {
+-    this.buf = !Buffer.isBuffer(buf) ? new Buffer(buf || 0) : buf;
+-    this.pos = 0;
+-    this.length = this.buf.length;
++proto.flush = function(t) {
++  this.center.flush(t)
++  this.radius.flush(t)
++  this.rotation.flush(t)
+ }
+ 
+-Pbf.Varint  = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum
+-Pbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64
+-Pbf.Bytes   = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields
+-Pbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32
++proto.pan = function(t, dx, dy, dz) {
++  dx = dx || 0.0
++  dy = dy || 0.0
++  dz = dz || 0.0
+ 
+-var SHIFT_LEFT_32 = (1 << 16) * (1 << 16),
+-    SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32,
+-    POW_2_63 = Math.pow(2, 63);
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
+ 
+-Pbf.prototype = {
++  var ux = mat[1]
++  var uy = mat[5]
++  var uz = mat[9]
++  var ul = len3(ux, uy, uz)
++  ux /= ul
++  uy /= ul
++  uz /= ul
+ 
+-    destroy: function() {
+-        this.buf = null;
+-    },
++  var rx = mat[0]
++  var ry = mat[4]
++  var rz = mat[8]
++  var ru = rx * ux + ry * uy + rz * uz
++  rx -= ux * ru
++  ry -= uy * ru
++  rz -= uz * ru
++  var rl = len3(rx, ry, rz)
++  rx /= rl
++  ry /= rl
++  rz /= rl
+ 
+-    // === READING =================================================================
++  var fx = mat[2]
++  var fy = mat[6]
++  var fz = mat[10]
++  var fu = fx * ux + fy * uy + fz * uz
++  var fr = fx * rx + fy * ry + fz * rz
++  fx -= fu * ux + fr * rx
++  fy -= fu * uy + fr * ry
++  fz -= fu * uz + fr * rz
++  var fl = len3(fx, fy, fz)
++  fx /= fl
++  fy /= fl
++  fz /= fl
++
++  var vx = rx * dx + ux * dy
++  var vy = ry * dx + uy * dy
++  var vz = rz * dx + uz * dy
++
++  this.center.move(t, vx, vy, vz)
++
++  //Update z-component of radius
++  var radius = Math.exp(this.computedRadius[0])
++  radius = Math.max(1e-4, radius + dz)
++  this.radius.set(t, Math.log(radius))
++}
+ 
+-    readFields: function(readField, result, end) {
+-        end = end || this.length;
++proto.rotate = function(t, dx, dy, dz) {
++  this.recalcMatrix(t)
+ 
+-        while (this.pos < end) {
+-            var val = this.readVarint(),
+-                tag = val >> 3,
+-                startPos = this.pos;
++  dx = dx||0.0
++  dy = dy||0.0
+ 
+-            readField(tag, result, this);
++  var mat = this.computedMatrix
+ 
+-            if (this.pos === startPos) this.skip(val);
+-        }
+-        return result;
+-    },
++  var rx = mat[0]
++  var ry = mat[4]
++  var rz = mat[8]
+ 
+-    readMessage: function(readField, result) {
+-        return this.readFields(readField, result, this.readVarint() + this.pos);
+-    },
++  var ux = mat[1]
++  var uy = mat[5]
++  var uz = mat[9]
+ 
+-    readFixed32: function() {
+-        var val = this.buf.readUInt32LE(this.pos);
+-        this.pos += 4;
+-        return val;
+-    },
++  var fx = mat[2]
++  var fy = mat[6]
++  var fz = mat[10]
+ 
+-    readSFixed32: function() {
+-        var val = this.buf.readInt32LE(this.pos);
+-        this.pos += 4;
+-        return val;
+-    },
++  var qx = dx * rx + dy * ux
++  var qy = dx * ry + dy * uy
++  var qz = dx * rz + dy * uz
+ 
+-    // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)
++  var bx = -(fy * qz - fz * qy)
++  var by = -(fz * qx - fx * qz)
++  var bz = -(fx * qy - fy * qx)  
++  var bw = Math.sqrt(Math.max(0.0, 1.0 - Math.pow(bx,2) - Math.pow(by,2) - Math.pow(bz,2)))
++  var bl = len4(bx, by, bz, bw)
++  if(bl > 1e-6) {
++    bx /= bl
++    by /= bl
++    bz /= bl
++    bw /= bl
++  } else {
++    bx = by = bz = 0.0
++    bw = 1.0
++  }
+ 
+-    readFixed64: function() {
+-        var val = this.buf.readUInt32LE(this.pos) + this.buf.readUInt32LE(this.pos + 4) * SHIFT_LEFT_32;
+-        this.pos += 8;
+-        return val;
+-    },
++  var rotation = this.computedRotation
++  var ax = rotation[0]
++  var ay = rotation[1]
++  var az = rotation[2]
++  var aw = rotation[3]
+ 
+-    readSFixed64: function() {
+-        var val = this.buf.readUInt32LE(this.pos) + this.buf.readInt32LE(this.pos + 4) * SHIFT_LEFT_32;
+-        this.pos += 8;
+-        return val;
+-    },
++  var cx = ax*bw + aw*bx + ay*bz - az*by
++  var cy = ay*bw + aw*by + az*bx - ax*bz
++  var cz = az*bw + aw*bz + ax*by - ay*bx
++  var cw = aw*bw - ax*bx - ay*by - az*bz
++  
++  //Apply roll
++  if(dz) {
++    bx = fx
++    by = fy
++    bz = fz
++    var s = Math.sin(dz) / len3(bx, by, bz)
++    bx *= s
++    by *= s
++    bz *= s
++    bw = Math.cos(dx)
++    cx = cx*bw + cw*bx + cy*bz - cz*by
++    cy = cy*bw + cw*by + cz*bx - cx*bz
++    cz = cz*bw + cw*bz + cx*by - cy*bx
++    cw = cw*bw - cx*bx - cy*by - cz*bz
++  }
+ 
+-    readFloat: function() {
+-        var val = this.buf.readFloatLE(this.pos);
+-        this.pos += 4;
+-        return val;
+-    },
++  var cl = len4(cx, cy, cz, cw)
++  if(cl > 1e-6) {
++    cx /= cl
++    cy /= cl
++    cz /= cl
++    cw /= cl
++  } else {
++    cx = cy = cz = 0.0
++    cw = 1.0
++  }
+ 
+-    readDouble: function() {
+-        var val = this.buf.readDoubleLE(this.pos);
+-        this.pos += 8;
+-        return val;
+-    },
++  this.rotation.set(t, cx, cy, cz, cw)
++}
+ 
+-    readVarint: function() {
+-        var buf = this.buf,
+-            val, b;
++proto.lookAt = function(t, eye, center, up) {
++  this.recalcMatrix(t)
+ 
+-        b = buf[this.pos++]; val  =  b & 0x7f;        if (b < 0x80) return val;
+-        b = buf[this.pos++]; val |= (b & 0x7f) << 7;  if (b < 0x80) return val;
+-        b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;
+-        b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;
++  center = center || this.computedCenter
++  eye    = eye    || this.computedEye
++  up     = up     || this.computedUp
+ 
+-        return readVarintRemainder(val, this);
+-    },
++  var mat = this.computedMatrix
++  lookAt(mat, eye, center, up)
+ 
+-    readVarint64: function() {
+-        var startPos = this.pos,
+-            val = this.readVarint();
++  var rotation = this.computedRotation
++  quatFromFrame(rotation,
++    mat[0], mat[1], mat[2],
++    mat[4], mat[5], mat[6],
++    mat[8], mat[9], mat[10])
++  normalize4(rotation, rotation)
++  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
+ 
+-        if (val < POW_2_63) return val;
++  var fl = 0.0
++  for(var i=0; i<3; ++i) {
++    fl += Math.pow(center[i] - eye[i], 2)
++  }
++  this.radius.set(t, 0.5 * Math.log(Math.max(fl, 1e-6)))
+ 
+-        var pos = this.pos - 2;
+-        while (this.buf[pos] === 0xff) pos--;
+-        if (pos < startPos) pos = startPos;
++  this.center.set(t, center[0], center[1], center[2])
++}
+ 
+-        val = 0;
+-        for (var i = 0; i < pos - startPos + 1; i++) {
+-            var b = ~this.buf[startPos + i] & 0x7f;
+-            val += i < 4 ? b << i * 7 : b * Math.pow(2, i * 7);
+-        }
++proto.translate = function(t, dx, dy, dz) {
++  this.center.move(t,
++    dx||0.0,
++    dy||0.0,
++    dz||0.0)
++}
+ 
+-        return -val - 1;
+-    },
++proto.setMatrix = function(t, matrix) {
+ 
+-    readSVarint: function() {
+-        var num = this.readVarint();
+-        return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding
+-    },
++  var rotation = this.computedRotation
++  quatFromFrame(rotation,
++    matrix[0], matrix[1], matrix[2],
++    matrix[4], matrix[5], matrix[6],
++    matrix[8], matrix[9], matrix[10])
++  normalize4(rotation, rotation)
++  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])
+ 
+-    readBoolean: function() {
+-        return Boolean(this.readVarint());
+-    },
++  var mat = this.computedMatrix
++  invert44(mat, matrix)
++  var w = mat[15]
++  if(Math.abs(w) > 1e-6) {
++    var cx = mat[12]/w
++    var cy = mat[13]/w
++    var cz = mat[14]/w
+ 
+-    readString: function() {
+-        var end = this.readVarint() + this.pos,
+-            str = this.buf.toString('utf8', this.pos, end);
+-        this.pos = end;
+-        return str;
+-    },
++    this.recalcMatrix(t)  
++    var r = Math.exp(this.computedRadius[0])
++    this.center.set(t, cx-mat[2]*r, cy-mat[6]*r, cz-mat[10]*r)
++    this.radius.idle(t)
++  } else {
++    this.center.idle(t)
++    this.radius.idle(t)
++  }
++}
+ 
+-    readBytes: function() {
+-        var end = this.readVarint() + this.pos,
+-            buffer = this.buf.slice(this.pos, end);
+-        this.pos = end;
+-        return buffer;
+-    },
++proto.setDistance = function(t, d) {
++  if(d > 0) {
++    this.radius.set(t, Math.log(d))
++  }
++}
+ 
+-    // verbose for performance reasons; doesn't affect gzipped size
++proto.setDistanceLimits = function(lo, hi) {
++  if(lo > 0) {
++    lo = Math.log(lo)
++  } else {
++    lo = -Infinity    
++  }
++  if(hi > 0) {
++    hi = Math.log(hi)
++  } else {
++    hi = Infinity
++  }
++  hi = Math.max(hi, lo)
++  this.radius.bounds[0][0] = lo
++  this.radius.bounds[1][0] = hi
++}
+ 
+-    readPackedVarint: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readVarint());
+-        return arr;
+-    },
+-    readPackedSVarint: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readSVarint());
+-        return arr;
+-    },
+-    readPackedBoolean: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readBoolean());
+-        return arr;
+-    },
+-    readPackedFloat: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readFloat());
+-        return arr;
+-    },
+-    readPackedDouble: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readDouble());
+-        return arr;
+-    },
+-    readPackedFixed32: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readFixed32());
+-        return arr;
+-    },
+-    readPackedSFixed32: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readSFixed32());
+-        return arr;
+-    },
+-    readPackedFixed64: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readFixed64());
+-        return arr;
+-    },
+-    readPackedSFixed64: function() {
+-        var end = this.readVarint() + this.pos, arr = [];
+-        while (this.pos < end) arr.push(this.readSFixed64());
+-        return arr;
+-    },
++proto.getDistanceLimits = function(out) {
++  var bounds = this.radius.bounds
++  if(out) {
++    out[0] = Math.exp(bounds[0][0])
++    out[1] = Math.exp(bounds[1][0])
++    return out
++  }
++  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
++}
+ 
+-    skip: function(val) {
+-        var type = val & 0x7;
+-        if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}
+-        else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;
+-        else if (type === Pbf.Fixed32) this.pos += 4;
+-        else if (type === Pbf.Fixed64) this.pos += 8;
+-        else throw new Error('Unimplemented type: ' + type);
+-    },
++proto.toJSON = function() {
++  this.recalcMatrix(this.lastT())
++  return {
++    center:   this.computedCenter.slice(),
++    rotation: this.computedRotation.slice(),
++    distance: Math.log(this.computedRadius[0]),
++    zoomMin:  this.radius.bounds[0][0],
++    zoomMax:  this.radius.bounds[1][0]
++  }
++}
+ 
+-    // === WRITING =================================================================
++proto.fromJSON = function(options) {
++  var t = this.lastT()
++  var c = options.center
++  if(c) {
++    this.center.set(t, c[0], c[1], c[2])
++  }
++  var r = options.rotation
++  if(r) {
++    this.rotation.set(t, r[0], r[1], r[2], r[3])
++  }
++  var d = options.distance
++  if(d && d > 0) {
++    this.radius.set(t, Math.log(d))
++  }
++  this.setDistanceLimits(options.zoomMin, options.zoomMax)
++}
+ 
+-    writeTag: function(tag, type) {
+-        this.writeVarint((tag << 3) | type);
+-    },
++function createOrbitController(options) {
++  options = options || {}
++  var center   = options.center   || [0,0,0]
++  var rotation = options.rotation || [0,0,0,1]
++  var radius   = options.radius   || 1.0
+ 
+-    realloc: function(min) {
+-        var length = this.length || 16;
++  center = [].slice.call(center, 0, 3)
++  rotation = [].slice.call(rotation, 0, 4)
++  normalize4(rotation, rotation)
+ 
+-        while (length < this.pos + min) length *= 2;
++  var result = new OrbitCameraController(
++    rotation,
++    center,
++    Math.log(radius))
+ 
+-        if (length !== this.length) {
+-            var buf = new Buffer(length);
+-            this.buf.copy(buf);
+-            this.buf = buf;
+-            this.length = length;
+-        }
+-    },
++  result.setDistanceLimits(options.zoomMin, options.zoomMax)
+ 
+-    finish: function() {
+-        this.length = this.pos;
+-        this.pos = 0;
+-        return this.buf.slice(0, this.length);
+-    },
++  if('eye' in options || 'up' in options) {
++    result.lookAt(0, options.eye, options.center, options.up)
++  }
+ 
+-    writeFixed32: function(val) {
+-        this.realloc(4);
+-        this.buf.writeUInt32LE(val, this.pos);
+-        this.pos += 4;
+-    },
++  return result
++}
++},{"./lib/quatFromFrame":388,"filtered-vector":100,"gl-mat4/fromQuat":139,"gl-mat4/invert":142,"gl-mat4/lookAt":143}],390:[function(require,module,exports){
++/*!
++ * pad-left <https://github.com/jonschlinkert/pad-left>
++ *
++ * Copyright (c) 2014-2015, Jon Schlinkert.
++ * Licensed under the MIT license.
++ */
+ 
+-    writeSFixed32: function(val) {
+-        this.realloc(4);
+-        this.buf.writeInt32LE(val, this.pos);
+-        this.pos += 4;
+-    },
++'use strict';
+ 
+-    writeFixed64: function(val) {
+-        this.realloc(8);
+-        this.buf.writeInt32LE(val & -1, this.pos);
+-        this.buf.writeUInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
+-        this.pos += 8;
+-    },
++var repeat = require('repeat-string');
+ 
+-    writeSFixed64: function(val) {
+-        this.realloc(8);
+-        this.buf.writeInt32LE(val & -1, this.pos);
+-        this.buf.writeInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
+-        this.pos += 8;
+-    },
++module.exports = function padLeft(str, num, ch) {
++  ch = typeof ch !== 'undefined' ? (ch + '') : ' ';
++  return repeat(ch, num) + str;
++};
++},{"repeat-string":410}],391:[function(require,module,exports){
++module.exports = function parseUnit(str, out) {
++    if (!out)
++        out = [ 0, '' ]
+ 
+-    writeVarint: function(val) {
+-        val = +val;
++    str = String(str)
++    var num = parseFloat(str, 10)
++    out[0] = num
++    out[1] = str.match(/[\d.\-\+]*\s*(.*)/)[1] || ''
++    return out
++}
++},{}],392:[function(require,module,exports){
++(function (process){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+-        if (val > 0xfffffff) {
+-            writeBigVarint(val, this);
+-            return;
+-        }
++// resolves . and .. elements in a path array with directory names there
++// must be no slashes, empty elements, or device names (c:\) in the array
++// (so also no leading and trailing slashes - it does not distinguish
++// relative and absolute paths)
++function normalizeArray(parts, allowAboveRoot) {
++  // if the path tries to go above the root, `up` ends up > 0
++  var up = 0;
++  for (var i = parts.length - 1; i >= 0; i--) {
++    var last = parts[i];
++    if (last === '.') {
++      parts.splice(i, 1);
++    } else if (last === '..') {
++      parts.splice(i, 1);
++      up++;
++    } else if (up) {
++      parts.splice(i, 1);
++      up--;
++    }
++  }
+ 
+-        this.realloc(4);
++  // if the path is allowed to go above the root, restore leading ..s
++  if (allowAboveRoot) {
++    for (; up--; up) {
++      parts.unshift('..');
++    }
++  }
+ 
+-        this.buf[this.pos++] =           val & 0x7f  | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+-        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+-        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
+-        this.buf[this.pos++] =   (val >>> 7) & 0x7f;
+-    },
++  return parts;
++}
+ 
+-    writeSVarint: function(val) {
+-        this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);
+-    },
++// Split a filename into [root, dir, basename, ext], unix version
++// 'root' is just a slash, or nothing.
++var splitPathRe =
++    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
++var splitPath = function(filename) {
++  return splitPathRe.exec(filename).slice(1);
++};
+ 
+-    writeBoolean: function(val) {
+-        this.writeVarint(Boolean(val));
+-    },
++// path.resolve([from ...], to)
++// posix version
++exports.resolve = function() {
++  var resolvedPath = '',
++      resolvedAbsolute = false;
+ 
+-    writeString: function(str) {
+-        str = String(str);
+-        var bytes = Buffer.byteLength(str);
+-        this.writeVarint(bytes);
+-        this.realloc(bytes);
+-        this.buf.write(str, this.pos);
+-        this.pos += bytes;
+-    },
++  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
++    var path = (i >= 0) ? arguments[i] : process.cwd();
+ 
+-    writeFloat: function(val) {
+-        this.realloc(4);
+-        this.buf.writeFloatLE(val, this.pos);
+-        this.pos += 4;
+-    },
++    // Skip empty and invalid entries
++    if (typeof path !== 'string') {
++      throw new TypeError('Arguments to path.resolve must be strings');
++    } else if (!path) {
++      continue;
++    }
+ 
+-    writeDouble: function(val) {
+-        this.realloc(8);
+-        this.buf.writeDoubleLE(val, this.pos);
+-        this.pos += 8;
+-    },
++    resolvedPath = path + '/' + resolvedPath;
++    resolvedAbsolute = path.charAt(0) === '/';
++  }
+ 
+-    writeBytes: function(buffer) {
+-        var len = buffer.length;
+-        this.writeVarint(len);
+-        this.realloc(len);
+-        for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];
+-    },
++  // At this point the path should be resolved to a full absolute path, but
++  // handle relative paths to be safe (might happen when process.cwd() fails)
+ 
+-    writeRawMessage: function(fn, obj) {
+-        this.pos++; // reserve 1 byte for short message length
++  // Normalize the path
++  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
++    return !!p;
++  }), !resolvedAbsolute).join('/');
+ 
+-        // write the message directly to the buffer and see how much was written
+-        var startPos = this.pos;
+-        fn(obj, this);
+-        var len = this.pos - startPos;
++  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
++};
+ 
+-        if (len >= 0x80) reallocForRawMessage(startPos, len, this);
++// path.normalize(path)
++// posix version
++exports.normalize = function(path) {
++  var isAbsolute = exports.isAbsolute(path),
++      trailingSlash = substr(path, -1) === '/';
+ 
+-        // finally, write the message length in the reserved place and restore the position
+-        this.pos = startPos - 1;
+-        this.writeVarint(len);
+-        this.pos += len;
+-    },
++  // Normalize the path
++  path = normalizeArray(filter(path.split('/'), function(p) {
++    return !!p;
++  }), !isAbsolute).join('/');
+ 
+-    writeMessage: function(tag, fn, obj) {
+-        this.writeTag(tag, Pbf.Bytes);
+-        this.writeRawMessage(fn, obj);
+-    },
++  if (!path && !isAbsolute) {
++    path = '.';
++  }
++  if (path && trailingSlash) {
++    path += '/';
++  }
+ 
+-    writePackedVarint:   function(tag, arr) { this.writeMessage(tag, writePackedVarint, arr);   },
+-    writePackedSVarint:  function(tag, arr) { this.writeMessage(tag, writePackedSVarint, arr);  },
+-    writePackedBoolean:  function(tag, arr) { this.writeMessage(tag, writePackedBoolean, arr);  },
+-    writePackedFloat:    function(tag, arr) { this.writeMessage(tag, writePackedFloat, arr);    },
+-    writePackedDouble:   function(tag, arr) { this.writeMessage(tag, writePackedDouble, arr);   },
+-    writePackedFixed32:  function(tag, arr) { this.writeMessage(tag, writePackedFixed32, arr);  },
+-    writePackedSFixed32: function(tag, arr) { this.writeMessage(tag, writePackedSFixed32, arr); },
+-    writePackedFixed64:  function(tag, arr) { this.writeMessage(tag, writePackedFixed64, arr);  },
+-    writePackedSFixed64: function(tag, arr) { this.writeMessage(tag, writePackedSFixed64, arr); },
++  return (isAbsolute ? '/' : '') + path;
++};
+ 
+-    writeBytesField: function(tag, buffer) {
+-        this.writeTag(tag, Pbf.Bytes);
+-        this.writeBytes(buffer);
+-    },
+-    writeFixed32Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed32);
+-        this.writeFixed32(val);
+-    },
+-    writeSFixed32Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed32);
+-        this.writeSFixed32(val);
+-    },
+-    writeFixed64Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed64);
+-        this.writeFixed64(val);
+-    },
+-    writeSFixed64Field: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed64);
+-        this.writeSFixed64(val);
+-    },
+-    writeVarintField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Varint);
+-        this.writeVarint(val);
+-    },
+-    writeSVarintField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Varint);
+-        this.writeSVarint(val);
+-    },
+-    writeStringField: function(tag, str) {
+-        this.writeTag(tag, Pbf.Bytes);
+-        this.writeString(str);
+-    },
+-    writeFloatField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed32);
+-        this.writeFloat(val);
+-    },
+-    writeDoubleField: function(tag, val) {
+-        this.writeTag(tag, Pbf.Fixed64);
+-        this.writeDouble(val);
+-    },
+-    writeBooleanField: function(tag, val) {
+-        this.writeVarintField(tag, Boolean(val));
++// posix version
++exports.isAbsolute = function(path) {
++  return path.charAt(0) === '/';
++};
++
++// posix version
++exports.join = function() {
++  var paths = Array.prototype.slice.call(arguments, 0);
++  return exports.normalize(filter(paths, function(p, index) {
++    if (typeof p !== 'string') {
++      throw new TypeError('Arguments to path.join must be strings');
+     }
++    return p;
++  }).join('/'));
+ };
+ 
+-function readVarintRemainder(val, pbf) {
+-    var buf = pbf.buf, b;
+ 
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x10000000;         if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x800000000;        if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x40000000000;      if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x2000000000000;    if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x100000000000000;  if (b < 0x80) return val;
+-    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x8000000000000000; if (b < 0x80) return val;
++// path.relative(from, to)
++// posix version
++exports.relative = function(from, to) {
++  from = exports.resolve(from).substr(1);
++  to = exports.resolve(to).substr(1);
+ 
+-    throw new Error('Expected varint not more than 10 bytes');
+-}
++  function trim(arr) {
++    var start = 0;
++    for (; start < arr.length; start++) {
++      if (arr[start] !== '') break;
++    }
+ 
+-function writeBigVarint(val, pbf) {
+-    pbf.realloc(10);
++    var end = arr.length - 1;
++    for (; end >= 0; end--) {
++      if (arr[end] !== '') break;
++    }
+ 
+-    var maxPos = pbf.pos + 10;
++    if (start > end) return [];
++    return arr.slice(start, end - start + 1);
++  }
+ 
+-    while (val >= 1) {
+-        if (pbf.pos >= maxPos) throw new Error('Given varint doesn\'t fit into 10 bytes');
+-        var b = val & 0xff;
+-        pbf.buf[pbf.pos++] = b | (val >= 0x80 ? 0x80 : 0);
+-        val /= 0x80;
++  var fromParts = trim(from.split('/'));
++  var toParts = trim(to.split('/'));
++
++  var length = Math.min(fromParts.length, toParts.length);
++  var samePartsLength = length;
++  for (var i = 0; i < length; i++) {
++    if (fromParts[i] !== toParts[i]) {
++      samePartsLength = i;
++      break;
+     }
+-}
++  }
+ 
+-function reallocForRawMessage(startPos, len, pbf) {
+-    var extraLen =
+-        len <= 0x3fff ? 1 :
+-        len <= 0x1fffff ? 2 :
+-        len <= 0xfffffff ? 3 : Math.ceil(Math.log(len) / (Math.LN2 * 7));
++  var outputParts = [];
++  for (var i = samePartsLength; i < fromParts.length; i++) {
++    outputParts.push('..');
++  }
+ 
+-    // if 1 byte isn't enough for encoding message length, shift the data to the right
+-    pbf.realloc(extraLen);
+-    for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];
+-}
++  outputParts = outputParts.concat(toParts.slice(samePartsLength));
+ 
+-function writePackedVarint(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]);   }
+-function writePackedSVarint(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]);  }
+-function writePackedFloat(arr, pbf)    { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]);    }
+-function writePackedDouble(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]);   }
+-function writePackedBoolean(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]);  }
+-function writePackedFixed32(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]);  }
+-function writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }
+-function writePackedFixed64(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]);  }
+-function writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }
++  return outputParts.join('/');
++};
+ 
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{"./buffer":401}],403:[function(require,module,exports){
+-arguments[4][55][0].apply(exports,arguments)
+-},{"dup":55}],404:[function(require,module,exports){
+-'use strict';
++exports.sep = '/';
++exports.delimiter = ':';
+ 
+-module.exports = Point;
++exports.dirname = function(path) {
++  var result = splitPath(path),
++      root = result[0],
++      dir = result[1];
+ 
+-function Point(x, y) {
+-    this.x = x;
+-    this.y = y;
+-}
++  if (!root && !dir) {
++    // No dirname whatsoever
++    return '.';
++  }
+ 
+-Point.prototype = {
+-    clone: function() { return new Point(this.x, this.y); },
++  if (dir) {
++    // It has a dirname, strip trailing slash
++    dir = dir.substr(0, dir.length - 1);
++  }
+ 
+-    add:     function(p) { return this.clone()._add(p);     },
+-    sub:     function(p) { return this.clone()._sub(p);     },
+-    mult:    function(k) { return this.clone()._mult(k);    },
+-    div:     function(k) { return this.clone()._div(k);     },
+-    rotate:  function(a) { return this.clone()._rotate(a);  },
+-    matMult: function(m) { return this.clone()._matMult(m); },
+-    unit:    function() { return this.clone()._unit(); },
+-    perp:    function() { return this.clone()._perp(); },
+-    round:   function() { return this.clone()._round(); },
++  return root + dir;
++};
+ 
+-    mag: function() {
+-        return Math.sqrt(this.x * this.x + this.y * this.y);
+-    },
+ 
+-    equals: function(p) {
+-        return this.x === p.x &&
+-               this.y === p.y;
+-    },
++exports.basename = function(path, ext) {
++  var f = splitPath(path)[2];
++  // TODO: make this comparison case-insensitive on windows?
++  if (ext && f.substr(-1 * ext.length) === ext) {
++    f = f.substr(0, f.length - ext.length);
++  }
++  return f;
++};
+ 
+-    dist: function(p) {
+-        return Math.sqrt(this.distSqr(p));
+-    },
+ 
+-    distSqr: function(p) {
+-        var dx = p.x - this.x,
+-            dy = p.y - this.y;
+-        return dx * dx + dy * dy;
+-    },
++exports.extname = function(path) {
++  return splitPath(path)[3];
++};
+ 
+-    angle: function() {
+-        return Math.atan2(this.y, this.x);
+-    },
++function filter (xs, f) {
++    if (xs.filter) return xs.filter(f);
++    var res = [];
++    for (var i = 0; i < xs.length; i++) {
++        if (f(xs[i], i, xs)) res.push(xs[i]);
++    }
++    return res;
++}
+ 
+-    angleTo: function(b) {
+-        return Math.atan2(this.y - b.y, this.x - b.x);
+-    },
++// String.prototype.substr - negative index don't work in IE8
++var substr = 'ab'.substr(-1) === 'b'
++    ? function (str, start, len) { return str.substr(start, len) }
++    : function (str, start, len) {
++        if (start < 0) start = str.length + start;
++        return str.substr(start, len);
++    }
++;
+ 
+-    angleWith: function(b) {
+-        return this.angleWithSep(b.x, b.y);
+-    },
++}).call(this,require('_process'))
++},{"_process":403}],393:[function(require,module,exports){
++'use strict';
+ 
+-    // Find the angle of the two vectors, solving the formula for the cross product a x b = |a||b|sin(θ) for θ.
+-    angleWithSep: function(x, y) {
+-        return Math.atan2(
+-            this.x * y - this.y * x,
+-            this.x * x + this.y * y);
+-    },
++// lightweight Buffer shim for pbf browser build
++// based on code from github.com/feross/buffer (MIT-licensed)
+ 
+-    _matMult: function(m) {
+-        var x = m[0] * this.x + m[1] * this.y,
+-            y = m[2] * this.x + m[3] * this.y;
+-        this.x = x;
+-        this.y = y;
+-        return this;
+-    },
++module.exports = Buffer;
+ 
+-    _add: function(p) {
+-        this.x += p.x;
+-        this.y += p.y;
+-        return this;
+-    },
++var ieee754 = require('ieee754');
+ 
+-    _sub: function(p) {
+-        this.x -= p.x;
+-        this.y -= p.y;
+-        return this;
+-    },
++var BufferMethods;
+ 
+-    _mult: function(k) {
+-        this.x *= k;
+-        this.y *= k;
+-        return this;
+-    },
++function Buffer(length) {
++    var arr;
++    if (length && length.length) {
++        arr = length;
++        length = arr.length;
++    }
++    var buf = new Uint8Array(length || 0);
++    if (arr) buf.set(arr);
+ 
+-    _div: function(k) {
+-        this.x /= k;
+-        this.y /= k;
+-        return this;
+-    },
++    buf.readUInt32LE = BufferMethods.readUInt32LE;
++    buf.writeUInt32LE = BufferMethods.writeUInt32LE;
++    buf.readInt32LE = BufferMethods.readInt32LE;
++    buf.writeInt32LE = BufferMethods.writeInt32LE;
++    buf.readFloatLE = BufferMethods.readFloatLE;
++    buf.writeFloatLE = BufferMethods.writeFloatLE;
++    buf.readDoubleLE = BufferMethods.readDoubleLE;
++    buf.writeDoubleLE = BufferMethods.writeDoubleLE;
++    buf.toString = BufferMethods.toString;
++    buf.write = BufferMethods.write;
++    buf.slice = BufferMethods.slice;
++    buf.copy = BufferMethods.copy;
+ 
+-    _unit: function() {
+-        this._div(this.mag());
+-        return this;
++    buf._isBuffer = true;
++    return buf;
++}
++
++var lastStr, lastStrEncoded;
++
++BufferMethods = {
++    readUInt32LE: function(pos) {
++        return ((this[pos]) |
++            (this[pos + 1] << 8) |
++            (this[pos + 2] << 16)) +
++            (this[pos + 3] * 0x1000000);
+     },
+ 
+-    _perp: function() {
+-        var y = this.y;
+-        this.y = this.x;
+-        this.x = -y;
+-        return this;
++    writeUInt32LE: function(val, pos) {
++        this[pos] = val;
++        this[pos + 1] = (val >>> 8);
++        this[pos + 2] = (val >>> 16);
++        this[pos + 3] = (val >>> 24);
+     },
+ 
+-    _rotate: function(angle) {
+-        var cos = Math.cos(angle),
+-            sin = Math.sin(angle),
+-            x = cos * this.x - sin * this.y,
+-            y = sin * this.x + cos * this.y;
+-        this.x = x;
+-        this.y = y;
+-        return this;
++    readInt32LE: function(pos) {
++        return ((this[pos]) |
++            (this[pos + 1] << 8) |
++            (this[pos + 2] << 16)) +
++            (this[pos + 3] << 24);
+     },
+ 
+-    _round: function() {
+-        this.x = Math.round(this.x);
+-        this.y = Math.round(this.y);
+-        return this;
+-    }
+-};
++    readFloatLE:  function(pos) { return ieee754.read(this, pos, true, 23, 4); },
++    readDoubleLE: function(pos) { return ieee754.read(this, pos, true, 52, 8); },
+ 
+-// constructs Point from an array if necessary
+-Point.convert = function (a) {
+-    if (a instanceof Point) {
+-        return a;
+-    }
+-    if (Array.isArray(a)) {
+-        return new Point(a[0], a[1]);
+-    }
+-    return a;
+-};
++    writeFloatLE:  function(val, pos) { return ieee754.write(this, val, pos, true, 23, 4); },
++    writeDoubleLE: function(val, pos) { return ieee754.write(this, val, pos, true, 52, 8); },
+ 
+-},{}],405:[function(require,module,exports){
+-// Copyright 2014 Simon Lydell
+-// X11 (“MIT”) Licensed. (See LICENSE.)
+-
+-void (function(root, factory) {
+-  if (typeof define === "function" && define.amd) {
+-    define(factory)
+-  } else if (typeof exports === "object") {
+-    module.exports = factory()
+-  } else {
+-    root.resolveUrl = factory()
+-  }
+-}(this, function() {
+-
+-  function resolveUrl(/* ...urls */) {
+-    var numUrls = arguments.length
+-
+-    if (numUrls === 0) {
+-      throw new Error("resolveUrl requires at least one argument; got none.")
+-    }
+-
+-    var base = document.createElement("base")
+-    base.href = arguments[0]
+-
+-    if (numUrls === 1) {
+-      return base.href
+-    }
+-
+-    var head = document.getElementsByTagName("head")[0]
+-    head.insertBefore(base, head.firstChild)
+-
+-    var a = document.createElement("a")
+-    var resolved
+-
+-    for (var index = 1; index < numUrls; index++) {
+-      a.href = arguments[index]
+-      resolved = a.href
+-      base.href = resolved
+-    }
+-
+-    head.removeChild(base)
+-
+-    return resolved
+-  }
+-
+-  return resolveUrl
+-
+-}));
++    toString: function(encoding, start, end) {
++        var str = '',
++            tmp = '';
+ 
+-},{}],406:[function(require,module,exports){
+-'use strict';
++        start = start || 0;
++        end = Math.min(this.length, end || this.length);
+ 
+-module.exports = ShelfPack;
++        for (var i = start; i < end; i++) {
++            var ch = this[i];
++            if (ch <= 0x7F) {
++                str += decodeURIComponent(tmp) + String.fromCharCode(ch);
++                tmp = '';
++            } else {
++                tmp += '%' + ch.toString(16);
++            }
++        }
+ 
++        str += decodeURIComponent(tmp);
+ 
+-/**
+- * Create a new ShelfPack bin allocator.
+- *
+- * Uses the Shelf Best Height Fit algorithm from
+- * http://clb.demon.fi/files/RectangleBinPack.pdf
+- *
+- * @class  ShelfPack
+- * @param  {number}  [w=64]  Initial width of the sprite
+- * @param  {number}  [h=64]  Initial width of the sprite
+- * @param  {Object}  [options]
+- * @param  {boolean} [options.autoResize=false]  If `true`, the sprite will automatically grow
+- * @example
+- * var sprite = new ShelfPack(64, 64, { autoResize: false });
+- */
+-function ShelfPack(w, h, options) {
+-    options = options || {};
+-    this.w = w || 64;
+-    this.h = h || 64;
+-    this.autoResize = !!options.autoResize;
+-    this.shelves = [];
+-    this.stats = {};
+-    this.count = function(h) {
+-        this.stats[h] = (this.stats[h] | 0) + 1;
+-    };
+-}
++        return str;
++    },
+ 
+-/**
+- * Batch pack multiple bins into the sprite.
+- *
+- * @param   {Array}   bins Array of requested bins - each object should have `width`, `height` (or `w`, `h`) properties
+- * @param   {Object}  [options]
+- * @param   {boolean} [options.inPlace=false] If `true`, the supplied bin objects will be updated inplace with `x` and `y` properties
+- * @returns {Array}   Array of allocated bins - each bin is an object with `x`, `y`, `w`, `h` properties
+- * @example
+- * var bins = [
+- *     { id: 'a', width: 12, height: 12 },
+- *     { id: 'b', width: 12, height: 16 },
+- *     { id: 'c', width: 12, height: 24 }
+- * ];
+- * var results = sprite.pack(bins, { inPlace: false });
+- */
+-ShelfPack.prototype.pack = function(bins, options) {
+-    bins = [].concat(bins);
+-    options = options || {};
++    write: function(str, pos) {
++        var bytes = str === lastStr ? lastStrEncoded : encodeString(str);
++        for (var i = 0; i < bytes.length; i++) {
++            this[pos + i] = bytes[i];
++        }
++    },
+ 
+-    var results = [],
+-        w, h, allocation;
++    slice: function(start, end) {
++        return this.subarray(start, end);
++    },
+ 
+-    for (var i = 0; i < bins.length; i++) {
+-        w = bins[i].w || bins[i].width;
+-        h = bins[i].h || bins[i].height;
+-        if (w && h) {
+-            allocation = this.packOne(w, h);
+-            if (!allocation) {
+-                continue;
+-            }
+-            if (options.inPlace) {
+-                bins[i].x = allocation.x;
+-                bins[i].y = allocation.y;
+-            }
+-            results.push(allocation);
++    copy: function(buf, pos) {
++        pos = pos || 0;
++        for (var i = 0; i < this.length; i++) {
++            buf[pos + i] = this[i];
+         }
+     }
++};
+ 
+-    return results;
++BufferMethods.writeInt32LE = BufferMethods.writeUInt32LE;
++
++Buffer.byteLength = function(str) {
++    lastStr = str;
++    lastStrEncoded = encodeString(str);
++    return lastStrEncoded.length;
+ };
+ 
+-/**
+- * Pack a single bin into the sprite.
+- *
+- * @param   {number}  w   Width of the bin to allocate
+- * @param   {number}  h   Height of the bin to allocate
+- * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
+- * @example
+- * var results = sprite.packOne(12, 16);
+- */
+-ShelfPack.prototype.packOne = function(w, h) {
+-    var y = 0,
+-        best = { shelf: -1, waste: Infinity },
+-        shelf, waste;
++Buffer.isBuffer = function(buf) {
++    return !!(buf && buf._isBuffer);
++};
+ 
+-    // find the best shelf
+-    for (var i = 0; i < this.shelves.length; i++) {
+-        shelf = this.shelves[i];
+-        y += shelf.h;
++function encodeString(str) {
++    var length = str.length,
++        bytes = [];
+ 
+-        // exactly the right height with width to spare, pack it..
+-        if (h === shelf.h && w <= shelf.free) {
+-            this.count(h);
+-            return shelf.alloc(w, h);
+-        }
+-        // not enough height or width, skip it..
+-        if (h > shelf.h || w > shelf.free) {
+-            continue;
+-        }
+-        // maybe enough height or width, minimize waste..
+-        if (h < shelf.h && w <= shelf.free) {
+-            waste = shelf.h - h;
+-            if (waste < best.waste) {
+-                best.waste = waste;
+-                best.shelf = i;
++    for (var i = 0, c, lead; i < length; i++) {
++        c = str.charCodeAt(i); // code point
++
++        if (c > 0xD7FF && c < 0xE000) {
++
++            if (lead) {
++                if (c < 0xDC00) {
++                    bytes.push(0xEF, 0xBF, 0xBD);
++                    lead = c;
++                    continue;
++
++                } else {
++                    c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;
++                    lead = null;
++                }
++
++            } else {
++                if (c > 0xDBFF || (i + 1 === length)) bytes.push(0xEF, 0xBF, 0xBD);
++                else lead = c;
++
++                continue;
+             }
++
++        } else if (lead) {
++            bytes.push(0xEF, 0xBF, 0xBD);
++            lead = null;
+         }
+-    }
+ 
+-    if (best.shelf !== -1) {
+-        shelf = this.shelves[best.shelf];
+-        this.count(h);
+-        return shelf.alloc(w, h);
++        if (c < 0x80) bytes.push(c);
++        else if (c < 0x800) bytes.push(c >> 0x6 | 0xC0, c & 0x3F | 0x80);
++        else if (c < 0x10000) bytes.push(c >> 0xC | 0xE0, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
++        else bytes.push(c >> 0x12 | 0xF0, c >> 0xC & 0x3F | 0x80, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
+     }
++    return bytes;
++}
+ 
+-    // add shelf..
+-    if (h <= (this.h - y) && w <= this.w) {
+-        shelf = new Shelf(y, this.w, h);
+-        this.shelves.push(shelf);
+-        this.count(h);
+-        return shelf.alloc(w, h);
+-    }
++},{"ieee754":223}],394:[function(require,module,exports){
++(function (global){
++'use strict';
+ 
+-    // no more space..
+-    // If `autoResize` option is set, grow the sprite as follows:
+-    //  * double whichever sprite dimension is smaller (`w1` or `h1`)
+-    //  * if sprite dimensions are equal, grow width before height
+-    //  * accomodate very large bin requests (big `w` or `h`)
+-    if (this.autoResize) {
+-        var h1, h2, w1, w2;
++module.exports = Pbf;
+ 
+-        h1 = h2 = this.h;
+-        w1 = w2 = this.w;
++var Buffer = global.Buffer || require('./buffer');
+ 
+-        if (w1 <= h1 || w > w1) {   // grow width..
+-            w2 = Math.max(w, w1) * 2;
+-        }
+-        if (h1 < w1 || h > h1) {    // grow height..
+-            h2 = Math.max(h, h1) * 2;
++function Pbf(buf) {
++    this.buf = !Buffer.isBuffer(buf) ? new Buffer(buf || 0) : buf;
++    this.pos = 0;
++    this.length = this.buf.length;
++}
++
++Pbf.Varint  = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum
++Pbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64
++Pbf.Bytes   = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields
++Pbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32
++
++var SHIFT_LEFT_32 = (1 << 16) * (1 << 16),
++    SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32,
++    POW_2_63 = Math.pow(2, 63);
++
++Pbf.prototype = {
++
++    destroy: function() {
++        this.buf = null;
++    },
++
++    // === READING =================================================================
++
++    readFields: function(readField, result, end) {
++        end = end || this.length;
++
++        while (this.pos < end) {
++            var val = this.readVarint(),
++                tag = val >> 3,
++                startPos = this.pos;
++
++            readField(tag, result, this);
++
++            if (this.pos === startPos) this.skip(val);
+         }
++        return result;
++    },
+ 
+-        this.resize(w2, h2);
+-        return this.packOne(w, h);  // retry
+-    }
++    readMessage: function(readField, result) {
++        return this.readFields(readField, result, this.readVarint() + this.pos);
++    },
+ 
+-    return null;
+-};
++    readFixed32: function() {
++        var val = this.buf.readUInt32LE(this.pos);
++        this.pos += 4;
++        return val;
++    },
+ 
+-/**
+- * Clear the sprite.
+- *
+- * @example
+- * sprite.clear();
+- */
+-ShelfPack.prototype.clear = function() {
+-    this.shelves = [];
+-    this.stats = {};
+-};
++    readSFixed32: function() {
++        var val = this.buf.readInt32LE(this.pos);
++        this.pos += 4;
++        return val;
++    },
+ 
+-/**
+- * Resize the sprite.
+- * The resize will fail if the requested dimensions are smaller than the current sprite dimensions.
+- *
+- * @param   {number}  w  Requested new sprite width
+- * @param   {number}  h  Requested new sprite height
+- * @returns {boolean} `true` if resize succeeded, `false` if failed
+- * @example
+- * sprite.resize(256, 256);
+- */
+-ShelfPack.prototype.resize = function(w, h) {
+-    if (w < this.w || h < this.h) {
+-        return false;
+-    }
++    // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)
+ 
+-    this.w = w;
+-    this.h = h;
+-    for (var i = 0; i < this.shelves.length; i++) {
+-        this.shelves[i].resize(w);
+-    }
+-    return true;
+-};
++    readFixed64: function() {
++        var val = this.buf.readUInt32LE(this.pos) + this.buf.readUInt32LE(this.pos + 4) * SHIFT_LEFT_32;
++        this.pos += 8;
++        return val;
++    },
+ 
++    readSFixed64: function() {
++        var val = this.buf.readUInt32LE(this.pos) + this.buf.readInt32LE(this.pos + 4) * SHIFT_LEFT_32;
++        this.pos += 8;
++        return val;
++    },
+ 
++    readFloat: function() {
++        var val = this.buf.readFloatLE(this.pos);
++        this.pos += 4;
++        return val;
++    },
+ 
+-/**
+- * Create a new Shelf.
+- *
+- * @private
+- * @class  Shelf
+- * @param  {number}  y   Top coordinate of the new shelf
+- * @param  {number}  w   Width of the new shelf
+- * @param  {number}  h   Height of the new shelf
+- * @example
+- * var shelf = new Shelf(64, 512, 24);
+- */
+-function Shelf(y, w, h) {
+-    this.x = 0;
+-    this.y = y;
+-    this.w = this.free = w;
+-    this.h = h;
+-}
++    readDouble: function() {
++        var val = this.buf.readDoubleLE(this.pos);
++        this.pos += 8;
++        return val;
++    },
+ 
+-/**
+- * Allocate a single bin into the shelf.
+- *
+- * @private
+- * @param   {number}  w   Width of the bin to allocate
+- * @param   {number}  h   Height of the bin to allocate
+- * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
+- * @example
+- * shelf.alloc(12, 16);
+- */
+-Shelf.prototype.alloc = function(w, h) {
+-    if (w > this.free || h > this.h) {
+-        return null;
+-    }
+-    var x = this.x;
+-    this.x += w;
+-    this.free -= w;
+-    return { x: x, y: this.y, w: w, h: h, width: w, height: h };
+-};
++    readVarint: function() {
++        var buf = this.buf,
++            val, b;
+ 
+-/**
+- * Resize the shelf.
+- * The resize will fail if the requested width is smaller than the current shelf width.
+- *
+- * @private
+- * @param   {number}  w  Requested new width of the shelf
+- * @returns {boolean} true if resize succeeded, false if failed
+- * @example
+- * shelf.resize(512);
+- */
+-Shelf.prototype.resize = function(w) {
+-    if (w < this.w) {
+-        return false;
+-    }
+-    this.free += (w - this.w);
+-    this.w = w;
+-    return true;
+-};
++        b = buf[this.pos++]; val  =  b & 0x7f;        if (b < 0x80) return val;
++        b = buf[this.pos++]; val |= (b & 0x7f) << 7;  if (b < 0x80) return val;
++        b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;
++        b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;
+ 
+-},{}],407:[function(require,module,exports){
+-'use strict';
++        return readVarintRemainder(val, this);
++    },
+ 
+-var kdbush = require('kdbush');
++    readVarint64: function() {
++        var startPos = this.pos,
++            val = this.readVarint();
+ 
+-module.exports = supercluster;
++        if (val < POW_2_63) return val;
+ 
+-function supercluster(options) {
+-    return new SuperCluster(options);
+-}
++        var pos = this.pos - 2;
++        while (this.buf[pos] === 0xff) pos--;
++        if (pos < startPos) pos = startPos;
+ 
+-function SuperCluster(options) {
+-    this.options = extend(Object.create(this.options), options);
+-    this.trees = new Array(this.options.maxZoom + 1);
+-}
++        val = 0;
++        for (var i = 0; i < pos - startPos + 1; i++) {
++            var b = ~this.buf[startPos + i] & 0x7f;
++            val += i < 4 ? b << i * 7 : b * Math.pow(2, i * 7);
++        }
+ 
+-SuperCluster.prototype = {
+-    options: {
+-        minZoom: 0,   // min zoom to generate clusters on
+-        maxZoom: 16,  // max zoom level to cluster the points on
+-        radius: 40,   // cluster radius in pixels
+-        extent: 512,  // tile extent (radius is calculated relative to it)
+-        nodeSize: 64, // size of the KD-tree leaf node, affects performance
+-        log: false    // whether to log timing info
++        return -val - 1;
+     },
+ 
+-    load: function (points) {
+-        var log = this.options.log;
++    readSVarint: function() {
++        var num = this.readVarint();
++        return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding
++    },
+ 
+-        if (log) console.time('total time');
++    readBoolean: function() {
++        return Boolean(this.readVarint());
++    },
+ 
+-        var timerId = 'prepare ' + points.length + ' points';
+-        if (log) console.time(timerId);
++    readString: function() {
++        var end = this.readVarint() + this.pos,
++            str = this.buf.toString('utf8', this.pos, end);
++        this.pos = end;
++        return str;
++    },
+ 
+-        this.points = points;
++    readBytes: function() {
++        var end = this.readVarint() + this.pos,
++            buffer = this.buf.slice(this.pos, end);
++        this.pos = end;
++        return buffer;
++    },
+ 
+-        // generate a cluster object for each point
+-        var clusters = points.map(createPointCluster);
+-        if (log) console.timeEnd(timerId);
++    // verbose for performance reasons; doesn't affect gzipped size
+ 
+-        // cluster points on max zoom, then cluster the results on previous zoom, etc.;
+-        // results in a cluster hierarchy across zoom levels
+-        for (var z = this.options.maxZoom; z >= this.options.minZoom; z--) {
+-            var now = +Date.now();
++    readPackedVarint: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readVarint());
++        return arr;
++    },
++    readPackedSVarint: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readSVarint());
++        return arr;
++    },
++    readPackedBoolean: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readBoolean());
++        return arr;
++    },
++    readPackedFloat: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readFloat());
++        return arr;
++    },
++    readPackedDouble: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readDouble());
++        return arr;
++    },
++    readPackedFixed32: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readFixed32());
++        return arr;
++    },
++    readPackedSFixed32: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readSFixed32());
++        return arr;
++    },
++    readPackedFixed64: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readFixed64());
++        return arr;
++    },
++    readPackedSFixed64: function() {
++        var end = this.readVarint() + this.pos, arr = [];
++        while (this.pos < end) arr.push(this.readSFixed64());
++        return arr;
++    },
+ 
+-            // index input points into a KD-tree
+-            this.trees[z + 1] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
++    skip: function(val) {
++        var type = val & 0x7;
++        if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}
++        else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;
++        else if (type === Pbf.Fixed32) this.pos += 4;
++        else if (type === Pbf.Fixed64) this.pos += 8;
++        else throw new Error('Unimplemented type: ' + type);
++    },
+ 
+-            clusters = this._cluster(clusters, z); // create a new set of clusters for the zoom
++    // === WRITING =================================================================
+ 
+-            if (log) console.log('z%d: %d clusters in %dms', z, clusters.length, +Date.now() - now);
++    writeTag: function(tag, type) {
++        this.writeVarint((tag << 3) | type);
++    },
++
++    realloc: function(min) {
++        var length = this.length || 16;
++
++        while (length < this.pos + min) length *= 2;
++
++        if (length !== this.length) {
++            var buf = new Buffer(length);
++            this.buf.copy(buf);
++            this.buf = buf;
++            this.length = length;
+         }
++    },
+ 
+-        // index top-level clusters
+-        this.trees[this.options.minZoom] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
++    finish: function() {
++        this.length = this.pos;
++        this.pos = 0;
++        return this.buf.slice(0, this.length);
++    },
+ 
+-        if (log) console.timeEnd('total time');
++    writeFixed32: function(val) {
++        this.realloc(4);
++        this.buf.writeUInt32LE(val, this.pos);
++        this.pos += 4;
++    },
+ 
+-        return this;
++    writeSFixed32: function(val) {
++        this.realloc(4);
++        this.buf.writeInt32LE(val, this.pos);
++        this.pos += 4;
+     },
+ 
+-    getClusters: function (bbox, zoom) {
+-        var tree = this.trees[this._limitZoom(zoom)];
+-        var ids = tree.range(lngX(bbox[0]), latY(bbox[3]), lngX(bbox[2]), latY(bbox[1]));
+-        var clusters = [];
+-        for (var i = 0; i < ids.length; i++) {
+-            var c = tree.points[ids[i]];
+-            clusters.push(c.id !== -1 ? this.points[c.id] : getClusterJSON(c));
+-        }
+-        return clusters;
++    writeFixed64: function(val) {
++        this.realloc(8);
++        this.buf.writeInt32LE(val & -1, this.pos);
++        this.buf.writeUInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
++        this.pos += 8;
+     },
+ 
+-    getTile: function (z, x, y) {
+-        var z2 = Math.pow(2, z);
+-        var extent = this.options.extent;
+-        var p = this.options.radius / extent;
+-        var tree = this.trees[this._limitZoom(z)];
+-        var ids = tree.range(
+-            (x - p) / z2,
+-            (y - p) / z2,
+-            (x + 1 + p) / z2,
+-            (y + 1 + p) / z2);
++    writeSFixed64: function(val) {
++        this.realloc(8);
++        this.buf.writeInt32LE(val & -1, this.pos);
++        this.buf.writeInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
++        this.pos += 8;
++    },
+ 
+-        if (!ids.length) return null;
++    writeVarint: function(val) {
++        val = +val;
+ 
+-        var tile = {
+-            features: []
+-        };
+-        for (var i = 0; i < ids.length; i++) {
+-            var c = tree.points[ids[i]];
+-            var feature = {
+-                type: 1,
+-                geometry: [[
+-                    Math.round(extent * (c.x * z2 - x)),
+-                    Math.round(extent * (c.y * z2 - y))
+-                ]],
+-                tags: c.id !== -1 ? this.points[c.id].properties : getClusterProperties(c)
+-            };
+-            tile.features.push(feature);
++        if (val > 0xfffffff) {
++            writeBigVarint(val, this);
++            return;
+         }
+-        return tile;
++
++        this.realloc(4);
++
++        this.buf[this.pos++] =           val & 0x7f  | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
++        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
++        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
++        this.buf[this.pos++] =   (val >>> 7) & 0x7f;
++    },
++
++    writeSVarint: function(val) {
++        this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);
++    },
++
++    writeBoolean: function(val) {
++        this.writeVarint(Boolean(val));
++    },
++
++    writeString: function(str) {
++        str = String(str);
++        var bytes = Buffer.byteLength(str);
++        this.writeVarint(bytes);
++        this.realloc(bytes);
++        this.buf.write(str, this.pos);
++        this.pos += bytes;
++    },
++
++    writeFloat: function(val) {
++        this.realloc(4);
++        this.buf.writeFloatLE(val, this.pos);
++        this.pos += 4;
++    },
++
++    writeDouble: function(val) {
++        this.realloc(8);
++        this.buf.writeDoubleLE(val, this.pos);
++        this.pos += 8;
+     },
+ 
+-    _limitZoom: function (z) {
+-        return Math.max(this.options.minZoom, Math.min(z, this.options.maxZoom + 1));
++    writeBytes: function(buffer) {
++        var len = buffer.length;
++        this.writeVarint(len);
++        this.realloc(len);
++        for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];
+     },
+ 
+-    _cluster: function (points, zoom) {
+-        var clusters = [];
+-        var r = this.options.radius / (this.options.extent * Math.pow(2, zoom));
++    writeRawMessage: function(fn, obj) {
++        this.pos++; // reserve 1 byte for short message length
+ 
+-        // loop through each point
+-        for (var i = 0; i < points.length; i++) {
+-            var p = points[i];
+-            // if we've already visited the point at this zoom level, skip it
+-            if (p.zoom <= zoom) continue;
+-            p.zoom = zoom;
++        // write the message directly to the buffer and see how much was written
++        var startPos = this.pos;
++        fn(obj, this);
++        var len = this.pos - startPos;
+ 
+-            // find all nearby points
+-            var tree = this.trees[zoom + 1];
+-            var neighborIds = tree.within(p.x, p.y, r);
++        if (len >= 0x80) reallocForRawMessage(startPos, len, this);
+ 
+-            var foundNeighbors = false;
+-            var numPoints = p.numPoints;
+-            var wx = p.x * numPoints;
+-            var wy = p.y * numPoints;
++        // finally, write the message length in the reserved place and restore the position
++        this.pos = startPos - 1;
++        this.writeVarint(len);
++        this.pos += len;
++    },
+ 
+-            for (var j = 0; j < neighborIds.length; j++) {
+-                var b = tree.points[neighborIds[j]];
+-                // filter out neighbors that are too far or already processed
+-                if (zoom < b.zoom) {
+-                    foundNeighbors = true;
+-                    b.zoom = zoom; // save the zoom (so it doesn't get processed twice)
+-                    wx += b.x * b.numPoints; // accumulate coordinates for calculating weighted center
+-                    wy += b.y * b.numPoints;
+-                    numPoints += b.numPoints;
+-                }
+-            }
++    writeMessage: function(tag, fn, obj) {
++        this.writeTag(tag, Pbf.Bytes);
++        this.writeRawMessage(fn, obj);
++    },
+ 
+-            clusters.push(foundNeighbors ? createCluster(wx / numPoints, wy / numPoints, numPoints, -1) : p);
+-        }
++    writePackedVarint:   function(tag, arr) { this.writeMessage(tag, writePackedVarint, arr);   },
++    writePackedSVarint:  function(tag, arr) { this.writeMessage(tag, writePackedSVarint, arr);  },
++    writePackedBoolean:  function(tag, arr) { this.writeMessage(tag, writePackedBoolean, arr);  },
++    writePackedFloat:    function(tag, arr) { this.writeMessage(tag, writePackedFloat, arr);    },
++    writePackedDouble:   function(tag, arr) { this.writeMessage(tag, writePackedDouble, arr);   },
++    writePackedFixed32:  function(tag, arr) { this.writeMessage(tag, writePackedFixed32, arr);  },
++    writePackedSFixed32: function(tag, arr) { this.writeMessage(tag, writePackedSFixed32, arr); },
++    writePackedFixed64:  function(tag, arr) { this.writeMessage(tag, writePackedFixed64, arr);  },
++    writePackedSFixed64: function(tag, arr) { this.writeMessage(tag, writePackedSFixed64, arr); },
+ 
+-        return clusters;
++    writeBytesField: function(tag, buffer) {
++        this.writeTag(tag, Pbf.Bytes);
++        this.writeBytes(buffer);
++    },
++    writeFixed32Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed32);
++        this.writeFixed32(val);
++    },
++    writeSFixed32Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed32);
++        this.writeSFixed32(val);
++    },
++    writeFixed64Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed64);
++        this.writeFixed64(val);
++    },
++    writeSFixed64Field: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed64);
++        this.writeSFixed64(val);
++    },
++    writeVarintField: function(tag, val) {
++        this.writeTag(tag, Pbf.Varint);
++        this.writeVarint(val);
++    },
++    writeSVarintField: function(tag, val) {
++        this.writeTag(tag, Pbf.Varint);
++        this.writeSVarint(val);
++    },
++    writeStringField: function(tag, str) {
++        this.writeTag(tag, Pbf.Bytes);
++        this.writeString(str);
++    },
++    writeFloatField: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed32);
++        this.writeFloat(val);
++    },
++    writeDoubleField: function(tag, val) {
++        this.writeTag(tag, Pbf.Fixed64);
++        this.writeDouble(val);
++    },
++    writeBooleanField: function(tag, val) {
++        this.writeVarintField(tag, Boolean(val));
+     }
+ };
+ 
+-function createCluster(x, y, numPoints, id) {
+-    return {
+-        x: x, // weighted cluster center
+-        y: y,
+-        zoom: Infinity, // the last zoom the cluster was processed at
+-        id: id, // index of the source feature in the original input array
+-        numPoints: numPoints
+-    };
+-}
++function readVarintRemainder(val, pbf) {
++    var buf = pbf.buf, b;
+ 
+-function createPointCluster(p, i) {
+-    var coords = p.geometry.coordinates;
+-    return createCluster(lngX(coords[0]), latY(coords[1]), 1, i);
+-}
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x10000000;         if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x800000000;        if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x40000000000;      if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x2000000000000;    if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x100000000000000;  if (b < 0x80) return val;
++    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x8000000000000000; if (b < 0x80) return val;
+ 
+-function getClusterJSON(cluster) {
+-    return {
+-        type: 'Feature',
+-        properties: getClusterProperties(cluster),
+-        geometry: {
+-            type: 'Point',
+-            coordinates: [xLng(cluster.x), yLat(cluster.y)]
+-        }
+-    };
++    throw new Error('Expected varint not more than 10 bytes');
+ }
+ 
+-function getClusterProperties(cluster) {
+-    var count = cluster.numPoints;
+-    var abbrev = count >= 10000 ? Math.round(count / 1000) + 'k' :
+-                 count >= 1000 ? (Math.round(count / 100) / 10) + 'k' : count;
+-    return {
+-        cluster: true,
+-        point_count: count,
+-        point_count_abbreviated: abbrev
+-    };
+-}
++function writeBigVarint(val, pbf) {
++    pbf.realloc(10);
+ 
+-// longitude/latitude to spherical mercator in [0..1] range
+-function lngX(lng) {
+-    return lng / 360 + 0.5;
+-}
+-function latY(lat) {
+-    var sin = Math.sin(lat * Math.PI / 180),
+-        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
+-    return y < 0 ? 0 :
+-           y > 1 ? 1 : y;
+-}
++    var maxPos = pbf.pos + 10;
+ 
+-// spherical mercator to longitude/latitude
+-function xLng(x) {
+-    return (x - 0.5) * 360;
+-}
+-function yLat(y) {
+-    var y2 = (180 - y * 360) * Math.PI / 180;
+-    return 360 * Math.atan(Math.exp(y2)) / Math.PI - 90;
++    while (val >= 1) {
++        if (pbf.pos >= maxPos) throw new Error('Given varint doesn\'t fit into 10 bytes');
++        var b = val & 0xff;
++        pbf.buf[pbf.pos++] = b | (val >= 0x80 ? 0x80 : 0);
++        val /= 0x80;
++    }
+ }
+ 
+-function extend(dest, src) {
+-    for (var id in src) dest[id] = src[id];
+-    return dest;
+-}
++function reallocForRawMessage(startPos, len, pbf) {
++    var extraLen =
++        len <= 0x3fff ? 1 :
++        len <= 0x1fffff ? 2 :
++        len <= 0xfffffff ? 3 : Math.ceil(Math.log(len) / (Math.LN2 * 7));
+ 
+-function getX(p) {
+-    return p.x;
+-}
+-function getY(p) {
+-    return p.y;
++    // if 1 byte isn't enough for encoding message length, shift the data to the right
++    pbf.realloc(extraLen);
++    for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];
+ }
+ 
+-},{"kdbush":408}],408:[function(require,module,exports){
+-'use strict';
+-
+-var sort = require('./sort');
+-var range = require('./range');
+-var within = require('./within');
+-
+-module.exports = kdbush;
++function writePackedVarint(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]);   }
++function writePackedSVarint(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]);  }
++function writePackedFloat(arr, pbf)    { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]);    }
++function writePackedDouble(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]);   }
++function writePackedBoolean(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]);  }
++function writePackedFixed32(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]);  }
++function writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }
++function writePackedFixed64(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]);  }
++function writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }
+ 
+-function kdbush(points, getX, getY, nodeSize, ArrayType) {
+-    return new KDBush(points, getX, getY, nodeSize, ArrayType);
+-}
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"./buffer":393}],395:[function(require,module,exports){
++"use strict"
+ 
+-function KDBush(points, getX, getY, nodeSize, ArrayType) {
+-    getX = getX || defaultGetX;
+-    getY = getY || defaultGetY;
+-    ArrayType = ArrayType || Array;
++module.exports = permutationSign
+ 
+-    this.nodeSize = nodeSize || 64;
+-    this.points = points;
++var BRUTE_FORCE_CUTOFF = 32
+ 
+-    this.ids = new ArrayType(points.length);
+-    this.coords = new ArrayType(points.length * 2);
++var pool = require("typedarray-pool")
+ 
+-    for (var i = 0; i < points.length; i++) {
+-        this.ids[i] = i;
+-        this.coords[2 * i] = getX(points[i]);
+-        this.coords[2 * i + 1] = getY(points[i]);
++function permutationSign(p) {
++  var n = p.length
++  if(n < BRUTE_FORCE_CUTOFF) {
++    //Use quadratic algorithm for small n
++    var sgn = 1
++    for(var i=0; i<n; ++i) {
++      for(var j=0; j<i; ++j) {
++        if(p[i] < p[j]) {
++          sgn = -sgn
++        } else if(p[i] === p[j]) {
++          return 0
++        }
++      }
+     }
+-
+-    sort(this.ids, this.coords, this.nodeSize, 0, this.ids.length - 1, 0);
+-}
+-
+-KDBush.prototype = {
+-    range: function (minX, minY, maxX, maxY) {
+-        return range(this.ids, this.coords, minX, minY, maxX, maxY, this.nodeSize);
+-    },
+-
+-    within: function (x, y, r) {
+-        return within(this.ids, this.coords, x, y, r, this.nodeSize);
++    return sgn
++  } else {
++    //Otherwise use linear time algorithm
++    var visited = pool.mallocUint8(n)
++    for(var i=0; i<n; ++i) {
++      visited[i] = 0
+     }
+-};
++    var sgn = 1
++    for(var i=0; i<n; ++i) {
++      if(!visited[i]) {
++        var count = 1
++        visited[i] = 1
++        for(var j=p[i]; j!==i; j=p[j]) {
++          if(visited[j]) {
++            pool.freeUint8(visited)
++            return 0
++          }
++          count += 1
++          visited[j] = 1
++        }
++        if(!(count & 1)) {
++          sgn = -sgn
++        }
++      }
++    }
++    pool.freeUint8(visited)
++    return sgn
++  }
++}
++},{"typedarray-pool":449}],396:[function(require,module,exports){
++"use strict"
+ 
+-function defaultGetX(p) { return p[0]; }
+-function defaultGetY(p) { return p[1]; }
++var pool = require("typedarray-pool")
++var inverse = require("invert-permutation")
+ 
+-},{"./range":409,"./sort":410,"./within":411}],409:[function(require,module,exports){
+-'use strict';
++function rank(permutation) {
++  var n = permutation.length
++  switch(n) {
++    case 0:
++    case 1:
++      return 0
++    case 2:
++      return permutation[1]
++    default:
++      break
++  }
++  var p = pool.mallocUint32(n)
++  var pinv = pool.mallocUint32(n)
++  var r = 0, s, t, i
++  inverse(permutation, pinv)
++  for(i=0; i<n; ++i) {
++    p[i] = permutation[i]
++  }
++  for(i=n-1; i>0; --i) {
++    t = pinv[i]
++    s = p[i]
++    p[i] = p[t]
++    p[t] = s
++    pinv[i] = pinv[s]
++    pinv[s] = t
++    r = (r + s) * i
++  }
++  pool.freeUint32(pinv)
++  pool.freeUint32(p)
++  return r
++}
+ 
+-module.exports = range;
++function unrank(n, r, p) {
++  switch(n) {
++    case 0:
++      if(p) { return p }
++      return []
++    case 1:
++      if(p) {
++        p[0] = 0
++        return p
++      } else {
++        return [0]
++      }
++    case 2:
++      if(p) {
++        if(r) {
++          p[0] = 0
++          p[1] = 1
++        } else {
++          p[0] = 1
++          p[1] = 0
++        }
++        return p
++      } else {
++        return r ? [0,1] : [1,0]
++      }
++    default:
++      break
++  }
++  p = p || new Array(n)
++  var s, t, i, nf=1
++  p[0] = 0
++  for(i=1; i<n; ++i) {
++    p[i] = i
++    nf = (nf*i)|0
++  }
++  for(i=n-1; i>0; --i) {
++    s = (r / nf)|0
++    r = (r - s * nf)|0
++    nf = (nf / i)|0
++    t = p[i]|0
++    p[i] = p[s]|0
++    p[s] = t|0
++  }
++  return p
++}
+ 
+-function range(ids, coords, minX, minY, maxX, maxY, nodeSize) {
+-    var stack = [0, ids.length - 1, 0];
+-    var result = [];
+-    var x, y;
++exports.rank = rank
++exports.unrank = unrank
+ 
+-    while (stack.length) {
+-        var axis = stack.pop();
+-        var right = stack.pop();
+-        var left = stack.pop();
++},{"invert-permutation":226,"typedarray-pool":449}],397:[function(require,module,exports){
++"use strict"
+ 
+-        if (right - left <= nodeSize) {
+-            for (var i = left; i <= right; i++) {
+-                x = coords[2 * i];
+-                y = coords[2 * i + 1];
+-                if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[i]);
+-            }
+-            continue;
+-        }
++module.exports = planarDual
+ 
+-        var m = Math.floor((left + right) / 2);
++var compareAngle = require("compare-angle")
+ 
+-        x = coords[2 * m];
+-        y = coords[2 * m + 1];
++function planarDual(cells, positions) {
+ 
+-        if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[m]);
++  var numVertices = positions.length|0
++  var numEdges = cells.length
++  var adj = [new Array(numVertices), new Array(numVertices)]
++  for(var i=0; i<numVertices; ++i) {
++    adj[0][i] = []
++    adj[1][i] = []
++  }
++  for(var i=0; i<numEdges; ++i) {
++    var c = cells[i]
++    adj[0][c[0]].push(c)
++    adj[1][c[1]].push(c)
++  }
+ 
+-        var nextAxis = (axis + 1) % 2;
++  var cycles = []
+ 
+-        if (axis === 0 ? minX <= x : minY <= y) {
+-            stack.push(left);
+-            stack.push(m - 1);
+-            stack.push(nextAxis);
+-        }
+-        if (axis === 0 ? maxX >= x : maxY >= y) {
+-            stack.push(m + 1);
+-            stack.push(right);
+-            stack.push(nextAxis);
+-        }
++  //Add isolated vertices as trivial case
++  for(var i=0; i<numVertices; ++i) {
++    if(adj[0][i].length + adj[1][i].length === 0) {
++      cycles.push( [i] )
+     }
++  }
+ 
+-    return result;
+-}
++  //Remove a half edge
++  function cut(c, i) {
++    var a = adj[i][c[i]]
++    a.splice(a.indexOf(c), 1)
++  }
+ 
+-},{}],410:[function(require,module,exports){
+-'use strict';
++  //Find next vertex and cut edge
++  function next(a, b, noCut) {
++    var nextCell, nextVertex, nextDir
++    for(var i=0; i<2; ++i) {
++      if(adj[i][b].length > 0) {
++        nextCell = adj[i][b][0]
++        nextDir = i
++        break
++      }
++    }
++    nextVertex = nextCell[nextDir^1]
+ 
+-module.exports = sortKD;
++    for(var dir=0; dir<2; ++dir) {
++      var nbhd = adj[dir][b]
++      for(var k=0; k<nbhd.length; ++k) {
++        var e = nbhd[k]
++        var p = e[dir^1]
++        var cmp = compareAngle(
++            positions[a], 
++            positions[b], 
++            positions[nextVertex],
++            positions[p])
++        if(cmp > 0) {
++          nextCell = e
++          nextVertex = p
++          nextDir = dir
++        }
++      }
++    }
++    if(noCut) {
++      return nextVertex
++    }
++    if(nextCell) {
++      cut(nextCell, nextDir)
++    }
++    return nextVertex
++  }
+ 
+-function sortKD(ids, coords, nodeSize, left, right, depth) {
+-    if (right - left <= nodeSize) return;
++  function extractCycle(v, dir) {
++    var e0 = adj[dir][v][0]
++    var cycle = [v]
++    cut(e0, dir)
++    var u = e0[dir^1]
++    var d0 = dir
++    while(true) {
++      while(u !== v) {
++        cycle.push(u)
++        u = next(cycle[cycle.length-2], u, false)
++      }
++      if(adj[0][v].length + adj[1][v].length === 0) {
++        break
++      }
++      var a = cycle[cycle.length-1]
++      var b = v
++      var c = cycle[1]
++      var d = next(a, b, true)
++      if(compareAngle(positions[a], positions[b], positions[c], positions[d]) < 0) {
++        break
++      }
++      cycle.push(v)
++      u = next(a, b)
++    }
++    return cycle
++  }
+ 
+-    var m = Math.floor((left + right) / 2);
++  function shouldGlue(pcycle, ncycle) {
++    return (ncycle[1] === ncycle[ncycle.length-1])
++  }
+ 
+-    select(ids, coords, m, left, right, depth % 2);
++  for(var i=0; i<numVertices; ++i) {
++    for(var j=0; j<2; ++j) {
++      var pcycle = []
++      while(adj[j][i].length > 0) {
++        var ni = adj[0][i].length
++        var ncycle = extractCycle(i,j)
++        if(shouldGlue(pcycle, ncycle)) {
++          //Glue together trivial cycles
++          pcycle.push.apply(pcycle, ncycle)
++        } else {
++          if(pcycle.length > 0) {
++            cycles.push(pcycle)
++          }
++          pcycle = ncycle
++        }
++      }
++      if(pcycle.length > 0) {
++        cycles.push(pcycle)
++      }
++    }
++  }
+ 
+-    sortKD(ids, coords, nodeSize, left, m - 1, depth + 1);
+-    sortKD(ids, coords, nodeSize, m + 1, right, depth + 1);
++  //Combine paths and loops together
++  return cycles
+ }
++},{"compare-angle":76}],398:[function(require,module,exports){
++'use strict'
+ 
+-function select(ids, coords, k, left, right, inc) {
++module.exports = trimLeaves
+ 
+-    while (right > left) {
+-        if (right - left > 600) {
+-            var n = right - left + 1;
+-            var m = k - left + 1;
+-            var z = Math.log(n);
+-            var s = 0.5 * Math.exp(2 * z / 3);
+-            var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
+-            var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
+-            var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
+-            select(ids, coords, k, newLeft, newRight, inc);
+-        }
++var e2a = require('edges-to-adjacency-list')
+ 
+-        var t = coords[2 * k + inc];
+-        var i = left;
+-        var j = right;
++function trimLeaves(edges, positions) {
++  var adj = e2a(edges, positions.length)
++  var live = new Array(positions.length)
++  var nbhd = new Array(positions.length)
+ 
+-        swapItem(ids, coords, left, k);
+-        if (coords[2 * right + inc] > t) swapItem(ids, coords, left, right);
++  var dead = []
++  for(var i=0; i<positions.length; ++i) {
++    var count = adj[i].length
++    nbhd[i] = count
++    live[i] = true
++    if(count <= 1) {
++      dead.push(i)
++    }
++  }
+ 
+-        while (i < j) {
+-            swapItem(ids, coords, i, j);
+-            i++;
+-            j--;
+-            while (coords[2 * i + inc] < t) i++;
+-            while (coords[2 * j + inc] > t) j--;
+-        }
++  while(dead.length > 0) {
++    var v = dead.pop()
++    live[v] = false
++    var n = adj[v]
++    for(var i=0; i<n.length; ++i) {
++      var u = n[i]
++      if(--nbhd[u] === 0) {
++        dead.push(u)
++      }
++    }
++  }
+ 
+-        if (coords[2 * left + inc] === t) swapItem(ids, coords, left, j);
+-        else {
+-            j++;
+-            swapItem(ids, coords, j, right);
+-        }
++  var newIndex = new Array(positions.length)
++  var npositions = []
++  for(var i=0; i<positions.length; ++i) {
++    if(live[i]) {
++      var v = npositions.length
++      newIndex[i] = v
++      npositions.push(positions[i])
++    } else {
++      newIndex[i] = -1
++    }
++  }
+ 
+-        if (j <= k) left = j + 1;
+-        if (k <= j) right = j - 1;
++  var nedges = []
++  for(var i=0; i<edges.length; ++i) {
++    var e = edges[i]
++    if(live[e[0]] && live[e[1]]) {
++      nedges.push([ newIndex[e[0]], newIndex[e[1]] ])
+     }
++  }
++  
++  return [ nedges, npositions ]
+ }
++},{"edges-to-adjacency-list":94}],399:[function(require,module,exports){
++'use strict'
+ 
+-function swapItem(ids, coords, i, j) {
+-    swap(ids, i, j);
+-    swap(coords, 2 * i, 2 * j);
+-    swap(coords, 2 * i + 1, 2 * j + 1);
++module.exports = planarGraphToPolyline
++
++var e2a = require('edges-to-adjacency-list')
++var planarDual = require('planar-dual')
++var preprocessPolygon = require('point-in-big-polygon')
++var twoProduct = require('two-product')
++var robustSum = require('robust-sum')
++var uniq = require('uniq')
++var trimLeaves = require('./lib/trim-leaves')
++
++function makeArray(length, fill) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = fill
++  }
++  return result
+ }
+ 
+-function swap(arr, i, j) {
+-    var tmp = arr[i];
+-    arr[i] = arr[j];
+-    arr[j] = tmp;
++function makeArrayOfArrays(length) {
++  var result = new Array(length)
++  for(var i=0; i<length; ++i) {
++    result[i] = []
++  }
++  return result
+ }
+ 
+-},{}],411:[function(require,module,exports){
+-'use strict';
+ 
+-module.exports = within;
++function planarGraphToPolyline(edges, positions) {
+ 
+-function within(ids, coords, qx, qy, r, nodeSize) {
+-    var stack = [0, ids.length - 1, 0];
+-    var result = [];
+-    var r2 = r * r;
++  //Trim leaves
++  var result = trimLeaves(edges, positions)
++  edges = result[0]
++  positions = result[1]
+ 
+-    while (stack.length) {
+-        var axis = stack.pop();
+-        var right = stack.pop();
+-        var left = stack.pop();
++  var numVertices = positions.length
++  var numEdges = edges.length
+ 
+-        if (right - left <= nodeSize) {
+-            for (var i = left; i <= right; i++) {
+-                if (sqDist(coords[2 * i], coords[2 * i + 1], qx, qy) <= r2) result.push(ids[i]);
+-            }
+-            continue;
++  //Calculate adjacency list, check manifold
++  var adj = e2a(edges, positions.length)
++  for(var i=0; i<numVertices; ++i) {
++    if(adj[i].length % 2 === 1) {
++      throw new Error('planar-graph-to-polyline: graph must be manifold')
++    }
++  }
++
++  //Get faces
++  var faces = planarDual(edges, positions)
++
++  //Check orientation of a polygon using exact arithmetic
++  function ccw(c) {
++    var n = c.length
++    var area = [0]
++    for(var j=0; j<n; ++j) {
++      var a = positions[c[j]]
++      var b = positions[c[(j+1)%n]]
++      var t00 = twoProduct(-a[0], a[1])
++      var t01 = twoProduct(-a[0], b[1])
++      var t10 = twoProduct( b[0], a[1])
++      var t11 = twoProduct( b[0], b[1])
++      area = robustSum(area, robustSum(robustSum(t00, t01), robustSum(t10, t11)))
++    }
++    return area[area.length-1] > 0
++  }
++
++  //Extract all clockwise faces
++  faces = faces.filter(ccw)
++
++  //Detect which loops are contained in one another to handle parent-of relation
++  var numFaces = faces.length
++  var parent = new Array(numFaces)
++  var containment = new Array(numFaces)
++  for(var i=0; i<numFaces; ++i) {
++    parent[i] = i
++    var row = new Array(numFaces)
++    var loopVertices = faces[i].map(function(v) {
++      return positions[v]
++    })
++    var pmc = preprocessPolygon([loopVertices])
++    var count = 0
++    outer:
++    for(var j=0; j<numFaces; ++j) {
++      row[j] = 0
++      if(i === j) {
++        continue
++      }
++      var c = faces[j]
++      var n = c.length
++      for(var k=0; k<n; ++k) {
++        var d = pmc(positions[c[k]])
++        if(d !== 0) {
++          if(d < 0) {
++            row[j] = 1
++            count += 1
++          }
++          continue outer
+         }
++      }
++      row[j] = 1
++      count += 1
++    }
++    containment[i] = [count, i, row]
++  }
++  containment.sort(function(a,b) {
++    return b[0] - a[0]
++  })
++  for(var i=0; i<numFaces; ++i) {
++    var row = containment[i]
++    var idx = row[1]
++    var children = row[2]
++    for(var j=0; j<numFaces; ++j) {
++      if(children[j]) {
++        parent[j] = idx
++      }
++    }
++  }
+ 
+-        var m = Math.floor((left + right) / 2);
++  //Initialize face adjacency list
++  var fadj = makeArrayOfArrays(numFaces)
++  for(var i=0; i<numFaces; ++i) {
++    fadj[i].push(parent[i])
++    fadj[parent[i]].push(i)
++  }
+ 
+-        var x = coords[2 * m];
+-        var y = coords[2 * m + 1];
++  //Build adjacency matrix for edges
++  var edgeAdjacency = {}
++  var internalVertices = makeArray(numVertices, false)
++  for(var i=0; i<numFaces; ++i) {
++    var c = faces[i]
++    var n = c.length
++    for(var j=0; j<n; ++j) {
++      var a = c[j]
++      var b = c[(j+1)%n]
++      var key = Math.min(a,b) + ":" + Math.max(a,b)
++      if(key in edgeAdjacency) {
++        var neighbor = edgeAdjacency[key]
++        fadj[neighbor].push(i)
++        fadj[i].push(neighbor)
++        internalVertices[a] = internalVertices[b] = true
++      } else {
++        edgeAdjacency[key] = i
++      }
++    }
++  }
+ 
+-        if (sqDist(x, y, qx, qy) <= r2) result.push(ids[m]);
++  function sharedBoundary(c) {
++    var n = c.length
++    for(var i=0; i<n; ++i) {
++      if(!internalVertices[c[i]]) {
++        return false
++      }
++    }
++    return true
++  }
+ 
+-        var nextAxis = (axis + 1) % 2;
++  var toVisit = []
++  var parity = makeArray(numFaces, -1)
++  for(var i=0; i<numFaces; ++i) {
++    if(parent[i] === i && !sharedBoundary(faces[i])) {
++      toVisit.push(i)
++      parity[i] = 0
++    } else {
++      parity[i] = -1
++    }
++  }
+ 
+-        if (axis === 0 ? qx - r <= x : qy - r <= y) {
+-            stack.push(left);
+-            stack.push(m - 1);
+-            stack.push(nextAxis);
+-        }
+-        if (axis === 0 ? qx + r >= x : qy + r >= y) {
+-            stack.push(m + 1);
+-            stack.push(right);
+-            stack.push(nextAxis);
++  //Using face adjacency, classify faces as in/out
++  var result = []
++  while(toVisit.length > 0) {
++    var top = toVisit.pop()
++    var nbhd = fadj[top]
++    uniq(nbhd, function(a,b) {
++      return a-b
++    })
++    var nnbhr = nbhd.length
++    var p = parity[top]
++    var polyline
++    if(p === 0) {
++      var c = faces[top]
++      polyline = [c]
++    }
++    for(var i=0; i<nnbhr; ++i) {
++      var f = nbhd[i]
++      if(parity[f] >= 0) {
++        continue
++      }
++      parity[f] = p^1
++      toVisit.push(f)
++      if(p === 0) {
++        var c = faces[f]
++        if(!sharedBoundary(c)) {
++          c.reverse()
++          polyline.push(c)
+         }
++      }
+     }
++    if(p === 0) {
++      result.push(polyline)
++    }
++  }
+ 
+-    return result;
++  return result
+ }
++},{"./lib/trim-leaves":398,"edges-to-adjacency-list":94,"planar-dual":397,"point-in-big-polygon":401,"robust-sum":423,"two-product":447,"uniq":451}],400:[function(require,module,exports){
++'use strict';
+ 
+-function sqDist(ax, ay, bx, by) {
+-    var dx = ax - bx;
+-    var dy = ay - by;
+-    return dx * dx + dy * dy;
+-}
++module.exports = Point;
+ 
+-},{}],412:[function(require,module,exports){
+-/*
+- * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+- *
+- * Redistribution and use in source and binary forms, with or without
+- * modification, are permitted provided that the following conditions
+- * are met:
+- * 1. Redistributions of source code must retain the above copyright
+- *    notice, this list of conditions and the following disclaimer.
+- * 2. Redistributions in binary form must reproduce the above copyright
+- *    notice, this list of conditions and the following disclaimer in the
+- *    documentation and/or other materials provided with the distribution.
+- *
+- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+- *
+- * Ported from Webkit
+- * http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/UnitBezier.h
+- */
++function Point(x, y) {
++    this.x = x;
++    this.y = y;
++}
+ 
+-module.exports = UnitBezier;
++Point.prototype = {
++    clone: function() { return new Point(this.x, this.y); },
+ 
+-function UnitBezier(p1x, p1y, p2x, p2y) {
+-    // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).
+-    this.cx = 3.0 * p1x;
+-    this.bx = 3.0 * (p2x - p1x) - this.cx;
+-    this.ax = 1.0 - this.cx - this.bx;
++    add:     function(p) { return this.clone()._add(p);     },
++    sub:     function(p) { return this.clone()._sub(p);     },
++    mult:    function(k) { return this.clone()._mult(k);    },
++    div:     function(k) { return this.clone()._div(k);     },
++    rotate:  function(a) { return this.clone()._rotate(a);  },
++    matMult: function(m) { return this.clone()._matMult(m); },
++    unit:    function() { return this.clone()._unit(); },
++    perp:    function() { return this.clone()._perp(); },
++    round:   function() { return this.clone()._round(); },
+ 
+-    this.cy = 3.0 * p1y;
+-    this.by = 3.0 * (p2y - p1y) - this.cy;
+-    this.ay = 1.0 - this.cy - this.by;
++    mag: function() {
++        return Math.sqrt(this.x * this.x + this.y * this.y);
++    },
+ 
+-    this.p1x = p1x;
+-    this.p1y = p2y;
+-    this.p2x = p2x;
+-    this.p2y = p2y;
+-}
++    equals: function(p) {
++        return this.x === p.x &&
++               this.y === p.y;
++    },
+ 
+-UnitBezier.prototype.sampleCurveX = function(t) {
+-    // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.
+-    return ((this.ax * t + this.bx) * t + this.cx) * t;
+-};
++    dist: function(p) {
++        return Math.sqrt(this.distSqr(p));
++    },
+ 
+-UnitBezier.prototype.sampleCurveY = function(t) {
+-    return ((this.ay * t + this.by) * t + this.cy) * t;
+-};
++    distSqr: function(p) {
++        var dx = p.x - this.x,
++            dy = p.y - this.y;
++        return dx * dx + dy * dy;
++    },
+ 
+-UnitBezier.prototype.sampleCurveDerivativeX = function(t) {
+-    return (3.0 * this.ax * t + 2.0 * this.bx) * t + this.cx;
+-};
++    angle: function() {
++        return Math.atan2(this.y, this.x);
++    },
+ 
+-UnitBezier.prototype.solveCurveX = function(x, epsilon) {
+-    if (typeof epsilon === 'undefined') epsilon = 1e-6;
++    angleTo: function(b) {
++        return Math.atan2(this.y - b.y, this.x - b.x);
++    },
+ 
+-    var t0, t1, t2, x2, i;
++    angleWith: function(b) {
++        return this.angleWithSep(b.x, b.y);
++    },
+ 
+-    // First try a few iterations of Newton's method -- normally very fast.
+-    for (t2 = x, i = 0; i < 8; i++) {
++    // Find the angle of the two vectors, solving the formula for the cross product a x b = |a||b|sin(θ) for θ.
++    angleWithSep: function(x, y) {
++        return Math.atan2(
++            this.x * y - this.y * x,
++            this.x * x + this.y * y);
++    },
+ 
+-        x2 = this.sampleCurveX(t2) - x;
+-        if (Math.abs(x2) < epsilon) return t2;
++    _matMult: function(m) {
++        var x = m[0] * this.x + m[1] * this.y,
++            y = m[2] * this.x + m[3] * this.y;
++        this.x = x;
++        this.y = y;
++        return this;
++    },
+ 
+-        var d2 = this.sampleCurveDerivativeX(t2);
+-        if (Math.abs(d2) < 1e-6) break;
++    _add: function(p) {
++        this.x += p.x;
++        this.y += p.y;
++        return this;
++    },
+ 
+-        t2 = t2 - x2 / d2;
+-    }
++    _sub: function(p) {
++        this.x -= p.x;
++        this.y -= p.y;
++        return this;
++    },
+ 
+-    // Fall back to the bisection method for reliability.
+-    t0 = 0.0;
+-    t1 = 1.0;
+-    t2 = x;
++    _mult: function(k) {
++        this.x *= k;
++        this.y *= k;
++        return this;
++    },
+ 
+-    if (t2 < t0) return t0;
+-    if (t2 > t1) return t1;
++    _div: function(k) {
++        this.x /= k;
++        this.y /= k;
++        return this;
++    },
+ 
+-    while (t0 < t1) {
++    _unit: function() {
++        this._div(this.mag());
++        return this;
++    },
+ 
+-        x2 = this.sampleCurveX(t2);
+-        if (Math.abs(x2 - x) < epsilon) return t2;
++    _perp: function() {
++        var y = this.y;
++        this.y = this.x;
++        this.x = -y;
++        return this;
++    },
+ 
+-        if (x > x2) {
+-            t0 = t2;
+-        } else {
+-            t1 = t2;
+-        }
++    _rotate: function(angle) {
++        var cos = Math.cos(angle),
++            sin = Math.sin(angle),
++            x = cos * this.x - sin * this.y,
++            y = sin * this.x + cos * this.y;
++        this.x = x;
++        this.y = y;
++        return this;
++    },
+ 
+-        t2 = (t1 - t0) * 0.5 + t0;
++    _round: function() {
++        this.x = Math.round(this.x);
++        this.y = Math.round(this.y);
++        return this;
+     }
+-
+-    // Failure.
+-    return t2;
+ };
+ 
+-UnitBezier.prototype.solve = function(x, epsilon) {
+-    return this.sampleCurveY(this.solveCurveX(x, epsilon));
++// constructs Point from an array if necessary
++Point.convert = function (a) {
++    if (a instanceof Point) {
++        return a;
++    }
++    if (Array.isArray(a)) {
++        return new Point(a[0], a[1]);
++    }
++    return a;
+ };
+ 
+-},{}],413:[function(require,module,exports){
+-module.exports.VectorTile = require('./lib/vectortile.js');
+-module.exports.VectorTileFeature = require('./lib/vectortilefeature.js');
+-module.exports.VectorTileLayer = require('./lib/vectortilelayer.js');
+-
+-},{"./lib/vectortile.js":414,"./lib/vectortilefeature.js":415,"./lib/vectortilelayer.js":416}],414:[function(require,module,exports){
+-'use strict';
+-
+-var VectorTileLayer = require('./vectortilelayer');
++},{}],401:[function(require,module,exports){
++module.exports = preprocessPolygon
+ 
+-module.exports = VectorTile;
++var orient = require('robust-orientation')[3]
++var makeSlabs = require('slab-decomposition')
++var makeIntervalTree = require('interval-tree-1d')
++var bsearch = require('binary-search-bounds')
+ 
+-function VectorTile(pbf, end) {
+-    this.layers = pbf.readFields(readTile, {}, end);
++function visitInterval() {
++  return true
+ }
+ 
+-function readTile(tag, layers, pbf) {
+-    if (tag === 3) {
+-        var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);
+-        if (layer.length) layers[layer.name] = layer;
++function intervalSearch(table) {
++  return function(x, y) {
++    var tree = table[x]
++    if(tree) {
++      return !!tree.queryPoint(y, visitInterval)
+     }
++    return false
++  }
+ }
+ 
+-
+-},{"./vectortilelayer":416}],415:[function(require,module,exports){
+-'use strict';
+-
+-var Point = require('point-geometry');
+-
+-module.exports = VectorTileFeature;
+-
+-function VectorTileFeature(pbf, end, extent, keys, values) {
+-    // Public
+-    this.properties = {};
+-    this.extent = extent;
+-    this.type = 0;
+-
+-    // Private
+-    this._pbf = pbf;
+-    this._geometry = -1;
+-    this._keys = keys;
+-    this._values = values;
+-
+-    pbf.readFields(readFeature, this, end);
++function buildVerticalIndex(segments) {
++  var table = {}
++  for(var i=0; i<segments.length; ++i) {
++    var s = segments[i]
++    var x = s[0][0]
++    var y0 = s[0][1]
++    var y1 = s[1][1]
++    var p = [ Math.min(y0, y1), Math.max(y0, y1) ]
++    if(x in table) {
++      table[x].push(p)
++    } else {
++      table[x] = [ p ]
++    }
++  }
++  var intervalTable = {}
++  var keys = Object.keys(table)
++  for(var i=0; i<keys.length; ++i) {
++    var segs = table[keys[i]]
++    intervalTable[keys[i]] = makeIntervalTree(segs)
++  }
++  return intervalSearch(intervalTable)
+ }
+ 
+-function readFeature(tag, feature, pbf) {
+-    if (tag == 1) feature._id = pbf.readVarint();
+-    else if (tag == 2) readTag(pbf, feature);
+-    else if (tag == 3) feature.type = pbf.readVarint();
+-    else if (tag == 4) feature._geometry = pbf.pos;
++function buildSlabSearch(slabs, coordinates) {
++  return function(p) {
++    var bucket = bsearch.le(coordinates, p[0])
++    if(bucket < 0) {
++      return 1
++    }
++    var root = slabs[bucket]
++    if(!root) {
++      if(bucket > 0 && coordinates[bucket] === p[0]) {
++        root = slabs[bucket-1]
++      } else {
++        return 1
++      }
++    }
++    var lastOrientation = 1
++    while(root) {
++      var s = root.key
++      var o = orient(p, s[0], s[1])
++      if(s[0][0] < s[1][0]) {
++        if(o < 0) {
++          root = root.left
++        } else if(o > 0) {
++          lastOrientation = -1
++          root = root.right
++        } else {
++          return 0
++        }
++      } else {
++        if(o > 0) {
++          root = root.left
++        } else if(o < 0) {
++          lastOrientation = 1
++          root = root.right
++        } else {
++          return 0
++        }
++      }
++    }
++    return lastOrientation
++  }
+ }
+ 
+-function readTag(pbf, feature) {
+-    var end = pbf.readVarint() + pbf.pos;
++function classifyEmpty(p) {
++  return 1
++}
+ 
+-    while (pbf.pos < end) {
+-        var key = feature._keys[pbf.readVarint()],
+-            value = feature._values[pbf.readVarint()];
+-        feature.properties[key] = value;
++function createClassifyVertical(testVertical) {
++  return function classify(p) {
++    if(testVertical(p[0], p[1])) {
++      return 0
+     }
++    return 1
++  }
+ }
+ 
+-VectorTileFeature.types = ['Unknown', 'Point', 'LineString', 'Polygon'];
+-
+-VectorTileFeature.prototype.loadGeometry = function() {
+-    var pbf = this._pbf;
+-    pbf.pos = this._geometry;
+-
+-    var end = pbf.readVarint() + pbf.pos,
+-        cmd = 1,
+-        length = 0,
+-        x = 0,
+-        y = 0,
+-        lines = [],
+-        line;
+-
+-    while (pbf.pos < end) {
+-        if (!length) {
+-            var cmdLen = pbf.readVarint();
+-            cmd = cmdLen & 0x7;
+-            length = cmdLen >> 3;
+-        }
++function createClassifyPointDegen(testVertical, testNormal) {
++  return function classify(p) {
++    if(testVertical(p[0], p[1])) {
++      return 0
++    }
++    return testNormal(p)
++  }
++}
+ 
+-        length--;
++function preprocessPolygon(loops) {
++  //Compute number of loops
++  var numLoops = loops.length
+ 
+-        if (cmd === 1 || cmd === 2) {
+-            x += pbf.readSVarint();
+-            y += pbf.readSVarint();
++  //Unpack segments
++  var segments = []
++  var vsegments = []
++  var ptr = 0
++  for(var i=0; i<numLoops; ++i) {
++    var loop = loops[i]
++    var numVertices = loop.length
++    for(var s=numVertices-1,t=0; t<numVertices; s=(t++)) {
++      var a = loop[s]
++      var b = loop[t]
++      if(a[0] === b[0]) {
++        vsegments.push([a,b])
++      } else {
++        segments.push([a,b])
++      }
++    }
++  }
+ 
+-            if (cmd === 1) { // moveTo
+-                if (line) lines.push(line);
+-                line = [];
+-            }
++  //Degenerate case: All loops are empty
++  if(segments.length === 0) {
++    if(vsegments.length === 0) {
++      return classifyEmpty
++    } else {
++      return createClassifyVertical(buildVerticalIndex(vsegments))
++    }
++  }
+ 
+-            line.push(new Point(x, y));
++  //Build slab decomposition
++  var slabs = makeSlabs(segments)
++  var testSlab = buildSlabSearch(slabs.slabs, slabs.coordinates)
+ 
+-        } else if (cmd === 7) {
++  if(vsegments.length === 0) {
++    return testSlab
++  } else {
++    return createClassifyPointDegen(
++      buildVerticalIndex(vsegments),
++      testSlab)
++  }
++}
++},{"binary-search-bounds":48,"interval-tree-1d":225,"robust-orientation":418,"slab-decomposition":435}],402:[function(require,module,exports){
++//Optimized version for triangle closest point
++// Based on Eberly's WildMagick codes
++// http://www.geometrictools.com/LibMathematics/Distance/Distance.html
++"use strict";
+ 
+-            // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90
+-            if (line) {
+-                line.push(line[0].clone()); // closePolygon
+-            }
++var diff = new Float64Array(4);
++var edge0 = new Float64Array(4);
++var edge1 = new Float64Array(4);
+ 
++function closestPoint2d(V0, V1, V2, point, result) {
++  //Reallocate buffers if necessary
++  if(diff.length < point.length) {
++    diff = new Float64Array(point.length);
++    edge0 = new Float64Array(point.length);
++    edge1 = new Float64Array(point.length);
++  }
++  //Compute edges
++  for(var i=0; i<point.length; ++i) {
++    diff[i]  = V0[i] - point[i];
++    edge0[i] = V1[i] - V0[i];
++    edge1[i] = V2[i] - V0[i];
++  }
++  //Compute coefficients for quadratic func
++  var a00 = 0.0
++    , a01 = 0.0
++    , a11 = 0.0
++    , b0  = 0.0
++    , b1  = 0.0
++    , c   = 0.0;
++  for(var i=0; i<point.length; ++i) {
++    var e0 = edge0[i]
++      , e1 = edge1[i]
++      , d  = diff[i];
++    a00 += e0 * e0;
++    a01 += e0 * e1;
++    a11 += e1 * e1;
++    b0  += d * e0;
++    b1  += d * e1;
++    c   += d * d;
++  }
++  //Compute determinant/coeffs
++  var det = Math.abs(a00*a11 - a01*a01);
++  var s   = a01*b1 - a11*b0;
++  var t   = a01*b0 - a00*b1;
++  var sqrDistance;
++  //Hardcoded Voronoi diagram classification
++  if (s + t <= det) {
++    if (s < 0) {
++      if (t < 0) { // region 4
++        if (b0 < 0) {
++          t = 0;
++          if (-b0 >= a00) {
++            s = 1.0;
++            sqrDistance = a00 + 2.0*b0 + c;
++          } else {
++            s = -b0/a00;
++            sqrDistance = b0*s + c;
++          }
+         } else {
+-            throw new Error('unknown command ' + cmd);
++          s = 0;
++          if (b1 >= 0) {
++            t = 0;
++            sqrDistance = c;
++          } else if (-b1 >= a11) {
++            t = 1;
++            sqrDistance = a11 + 2.0*b1 + c;
++          } else {
++            t = -b1/a11;
++            sqrDistance = b1*t + c;
++          }
++        }
++      } else {  // region 3
++        s = 0;
++        if (b1 >= 0) {
++          t = 0;
++          sqrDistance = c;
++        } else if (-b1 >= a11) {
++          t = 1;
++          sqrDistance = a11 + 2.0*b1 + c;
++        } else {
++          t = -b1/a11;
++          sqrDistance = b1*t + c;
++        }
++      }
++    } else if (t < 0) { // region 5
++      t = 0;
++      if (b0 >= 0) {
++        s = 0;
++        sqrDistance = c;
++      } else if (-b0 >= a00) {
++        s = 1;
++        sqrDistance = a00 + 2.0*b0 + c;
++      } else {
++        s = -b0/a00;
++        sqrDistance = b0*s + c;
++      }
++    } else {  // region 0
++      // minimum at interior point
++      var invDet = 1.0 / det;
++      s *= invDet;
++      t *= invDet;
++      sqrDistance = s*(a00*s + a01*t + 2.0*b0) + t*(a01*s + a11*t + 2.0*b1) + c;
++    }
++  } else {
++    var tmp0, tmp1, numer, denom;
++    
++    if (s < 0) {  // region 2
++      tmp0 = a01 + b0;
++      tmp1 = a11 + b1;
++      if (tmp1 > tmp0) {
++        numer = tmp1 - tmp0;
++        denom = a00 - 2.0*a01 + a11;
++        if (numer >= denom) {
++          s = 1;
++          t = 0;
++          sqrDistance = a00 + 2.0*b0 + c;
++        } else {
++          s = numer/denom;
++          t = 1 - s;
++          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
++          t*(a01*s + a11*t + 2.0*b1) + c;
++        }
++      } else {
++        s = 0;
++        if (tmp1 <= 0) {
++          t = 1;
++          sqrDistance = a11 + 2.0*b1 + c;
++        } else if (b1 >= 0) {
++          t = 0;
++          sqrDistance = c;
++        } else {
++          t = -b1/a11;
++          sqrDistance = b1*t + c;
++        }
++      }
++    } else if (t < 0) {  // region 6
++      tmp0 = a01 + b1;
++      tmp1 = a00 + b0;
++      if (tmp1 > tmp0) {
++        numer = tmp1 - tmp0;
++        denom = a00 - 2.0*a01 + a11;
++        if (numer >= denom) {
++          t = 1;
++          s = 0;
++          sqrDistance = a11 + 2.0*b1 + c;
++        } else {
++          t = numer/denom;
++          s = 1 - t;
++          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
++          t*(a01*s + a11*t + 2.0*b1) + c;
++        }
++      } else {
++        t = 0;
++        if (tmp1 <= 0) {
++          s = 1;
++          sqrDistance = a00 + 2.0*b0 + c;
++        } else if (b0 >= 0) {
++          s = 0;
++          sqrDistance = c;
++        } else {
++          s = -b0/a00;
++          sqrDistance = b0*s + c;
++        }
++      }
++    } else {  // region 1
++      numer = a11 + b1 - a01 - b0;
++      if (numer <= 0) {
++        s = 0;
++        t = 1;
++        sqrDistance = a11 + 2.0*b1 + c;
++      } else {
++        denom = a00 - 2.0*a01 + a11;
++        if (numer >= denom) {
++          s = 1;
++          t = 0;
++          sqrDistance = a00 + 2.0*b0 + c;
++        } else {
++          s = numer/denom;
++          t = 1 - s;
++          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
++          t*(a01*s + a11*t + 2.0*b1) + c;
+         }
++      }
+     }
++  }
++  var u = 1.0 - s - t;
++  for(var i=0; i<point.length; ++i) {
++    result[i] = u * V0[i] + s * V1[i] + t * V2[i];
++  }
++  if(sqrDistance < 0) {
++    return 0;
++  }
++  return sqrDistance;
++}
+ 
+-    if (line) lines.push(line);
++module.exports = closestPoint2d;
+ 
+-    return lines;
+-};
++},{}],403:[function(require,module,exports){
++// shim for using process in browser
++var process = module.exports = {};
+ 
+-VectorTileFeature.prototype.bbox = function() {
+-    var pbf = this._pbf;
+-    pbf.pos = this._geometry;
++// cached from whatever global is present so that test runners that stub it
++// don't break things.  But we need to wrap it in a try catch in case it is
++// wrapped in strict mode code which doesn't define any globals.  It's inside a
++// function because try/catches deoptimize in certain engines.
+ 
+-    var end = pbf.readVarint() + pbf.pos,
+-        cmd = 1,
+-        length = 0,
+-        x = 0,
+-        y = 0,
+-        x1 = Infinity,
+-        x2 = -Infinity,
+-        y1 = Infinity,
+-        y2 = -Infinity;
++var cachedSetTimeout;
++var cachedClearTimeout;
+ 
+-    while (pbf.pos < end) {
+-        if (!length) {
+-            var cmdLen = pbf.readVarint();
+-            cmd = cmdLen & 0x7;
+-            length = cmdLen >> 3;
++function defaultSetTimout() {
++    throw new Error('setTimeout has not been defined');
++}
++function defaultClearTimeout () {
++    throw new Error('clearTimeout has not been defined');
++}
++(function () {
++    try {
++        if (typeof setTimeout === 'function') {
++            cachedSetTimeout = setTimeout;
++        } else {
++            cachedSetTimeout = defaultSetTimout;
+         }
++    } catch (e) {
++        cachedSetTimeout = defaultSetTimout;
++    }
++    try {
++        if (typeof clearTimeout === 'function') {
++            cachedClearTimeout = clearTimeout;
++        } else {
++            cachedClearTimeout = defaultClearTimeout;
++        }
++    } catch (e) {
++        cachedClearTimeout = defaultClearTimeout;
++    }
++} ())
++function runTimeout(fun) {
++    if (cachedSetTimeout === setTimeout) {
++        //normal enviroments in sane situations
++        return setTimeout(fun, 0);
++    }
++    // if setTimeout wasn't available but was latter defined
++    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
++        cachedSetTimeout = setTimeout;
++        return setTimeout(fun, 0);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedSetTimeout(fun, 0);
++    } catch(e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
++            return cachedSetTimeout.call(null, fun, 0);
++        } catch(e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
++            return cachedSetTimeout.call(this, fun, 0);
++        }
++    }
+ 
+-        length--;
+-
+-        if (cmd === 1 || cmd === 2) {
+-            x += pbf.readSVarint();
+-            y += pbf.readSVarint();
+-            if (x < x1) x1 = x;
+-            if (x > x2) x2 = x;
+-            if (y < y1) y1 = y;
+-            if (y > y2) y2 = y;
+ 
+-        } else if (cmd !== 7) {
+-            throw new Error('unknown command ' + cmd);
++}
++function runClearTimeout(marker) {
++    if (cachedClearTimeout === clearTimeout) {
++        //normal enviroments in sane situations
++        return clearTimeout(marker);
++    }
++    // if clearTimeout wasn't available but was latter defined
++    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
++        cachedClearTimeout = clearTimeout;
++        return clearTimeout(marker);
++    }
++    try {
++        // when when somebody has screwed with setTimeout but no I.E. maddness
++        return cachedClearTimeout(marker);
++    } catch (e){
++        try {
++            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
++            return cachedClearTimeout.call(null, marker);
++        } catch (e){
++            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
++            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
++            return cachedClearTimeout.call(this, marker);
+         }
+     }
+ 
+-    return [x1, y1, x2, y2];
+-};
+ 
+-VectorTileFeature.prototype.toGeoJSON = function(x, y, z) {
+-    var size = this.extent * Math.pow(2, z),
+-        x0 = this.extent * x,
+-        y0 = this.extent * y,
+-        coords = this.loadGeometry(),
+-        type = VectorTileFeature.types[this.type],
+-        i, j;
+ 
+-    function project(line) {
+-        for (var j = 0; j < line.length; j++) {
+-            var p = line[j], y2 = 180 - (p.y + y0) * 360 / size;
+-            line[j] = [
+-                (p.x + x0) * 360 / size - 180,
+-                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
+-            ];
+-        }
+-    }
++}
++var queue = [];
++var draining = false;
++var currentQueue;
++var queueIndex = -1;
+ 
+-    switch (this.type) {
+-    case 1:
+-        var points = [];
+-        for (i = 0; i < coords.length; i++) {
+-            points[i] = coords[i][0];
+-        }
+-        coords = points;
+-        project(coords);
+-        break;
++function cleanUpNextTick() {
++    if (!draining || !currentQueue) {
++        return;
++    }
++    draining = false;
++    if (currentQueue.length) {
++        queue = currentQueue.concat(queue);
++    } else {
++        queueIndex = -1;
++    }
++    if (queue.length) {
++        drainQueue();
++    }
++}
+ 
+-    case 2:
+-        for (i = 0; i < coords.length; i++) {
+-            project(coords[i]);
+-        }
+-        break;
++function drainQueue() {
++    if (draining) {
++        return;
++    }
++    var timeout = runTimeout(cleanUpNextTick);
++    draining = true;
+ 
+-    case 3:
+-        coords = classifyRings(coords);
+-        for (i = 0; i < coords.length; i++) {
+-            for (j = 0; j < coords[i].length; j++) {
+-                project(coords[i][j]);
++    var len = queue.length;
++    while(len) {
++        currentQueue = queue;
++        queue = [];
++        while (++queueIndex < len) {
++            if (currentQueue) {
++                currentQueue[queueIndex].run();
+             }
+         }
+-        break;
++        queueIndex = -1;
++        len = queue.length;
+     }
++    currentQueue = null;
++    draining = false;
++    runClearTimeout(timeout);
++}
+ 
+-    if (coords.length === 1) {
+-        coords = coords[0];
+-    } else {
+-        type = 'Multi' + type;
++process.nextTick = function (fun) {
++    var args = new Array(arguments.length - 1);
++    if (arguments.length > 1) {
++        for (var i = 1; i < arguments.length; i++) {
++            args[i - 1] = arguments[i];
++        }
++    }
++    queue.push(new Item(fun, args));
++    if (queue.length === 1 && !draining) {
++        runTimeout(drainQueue);
+     }
++};
+ 
+-    var result = {
+-        type: "Feature",
+-        geometry: {
+-            type: type,
+-            coordinates: coords
+-        },
+-        properties: this.properties
+-    };
++// v8 likes predictible objects
++function Item(fun, array) {
++    this.fun = fun;
++    this.array = array;
++}
++Item.prototype.run = function () {
++    this.fun.apply(null, this.array);
++};
++process.title = 'browser';
++process.browser = true;
++process.env = {};
++process.argv = [];
++process.version = ''; // empty string to avoid regexp issues
++process.versions = {};
+ 
+-    if ('_id' in this) {
+-        result.id = this._id;
+-    }
++function noop() {}
+ 
+-    return result;
++process.on = noop;
++process.addListener = noop;
++process.once = noop;
++process.off = noop;
++process.removeListener = noop;
++process.removeAllListeners = noop;
++process.emit = noop;
++
++process.binding = function (name) {
++    throw new Error('process.binding is not supported');
+ };
+ 
+-// classifies an array of rings into polygons with outer rings and holes
++process.cwd = function () { return '/' };
++process.chdir = function (dir) {
++    throw new Error('process.chdir is not supported');
++};
++process.umask = function() { return 0; };
+ 
+-function classifyRings(rings) {
+-    var len = rings.length;
++},{}],404:[function(require,module,exports){
++module.exports = require('gl-quat/slerp')
++},{"gl-quat/slerp":176}],405:[function(require,module,exports){
++'use strict'
+ 
+-    if (len <= 1) return [rings];
++var bnadd = require('big-rat/add')
+ 
+-    var polygons = [],
+-        polygon,
+-        ccw;
++module.exports = add
+ 
+-    for (var i = 0; i < len; i++) {
+-        var area = signedArea(rings[i]);
+-        if (area === 0) continue;
++function add(a, b) {
++  var n = a.length
++  var r = new Array(n)
++    for(var i=0; i<n; ++i) {
++    r[i] = bnadd(a[i], b[i])
++  }
++  return r
++}
+ 
+-        if (ccw === undefined) ccw = area < 0;
++},{"big-rat/add":32}],406:[function(require,module,exports){
++'use strict'
+ 
+-        if (ccw === area < 0) {
+-            if (polygon) polygons.push(polygon);
+-            polygon = [rings[i]];
++module.exports = float2rat
+ 
+-        } else {
+-            polygon.push(rings[i]);
+-        }
+-    }
+-    if (polygon) polygons.push(polygon);
++var rat = require('big-rat')
+ 
+-    return polygons;
++function float2rat(v) {
++  var result = new Array(v.length)
++  for(var i=0; i<v.length; ++i) {
++    result[i] = rat(v[i])
++  }
++  return result
+ }
+ 
+-function signedArea(ring) {
+-    var sum = 0;
+-    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
+-        p1 = ring[i];
+-        p2 = ring[j];
+-        sum += (p2.x - p1.x) * (p1.y + p2.y);
+-    }
+-    return sum;
+-}
++},{"big-rat":35}],407:[function(require,module,exports){
++'use strict'
+ 
+-},{"point-geometry":404}],416:[function(require,module,exports){
+-'use strict';
++var rat = require('big-rat')
++var mul = require('big-rat/mul')
+ 
+-var VectorTileFeature = require('./vectortilefeature.js');
++module.exports = muls
+ 
+-module.exports = VectorTileLayer;
++function muls(a, x) {
++  var s = rat(x)
++  var n = a.length
++  var r = new Array(n)
++  for(var i=0; i<n; ++i) {
++    r[i] = mul(a[i], s)
++  }
++  return r
++}
+ 
+-function VectorTileLayer(pbf, end) {
+-    // Public
+-    this.version = 1;
+-    this.name = null;
+-    this.extent = 4096;
+-    this.length = 0;
++},{"big-rat":35,"big-rat/mul":44}],408:[function(require,module,exports){
++'use strict'
+ 
+-    // Private
+-    this._pbf = pbf;
+-    this._keys = [];
+-    this._values = [];
+-    this._features = [];
++var bnsub = require('big-rat/sub')
+ 
+-    pbf.readFields(readLayer, this, end);
++module.exports = sub
+ 
+-    this.length = this._features.length;
++function sub(a, b) {
++  var n = a.length
++  var r = new Array(n)
++    for(var i=0; i<n; ++i) {
++    r[i] = bnsub(a[i], b[i])
++  }
++  return r
+ }
+ 
+-function readLayer(tag, layer, pbf) {
+-    if (tag === 15) layer.version = pbf.readVarint();
+-    else if (tag === 1) layer.name = pbf.readString();
+-    else if (tag === 5) layer.extent = pbf.readVarint();
+-    else if (tag === 2) layer._features.push(pbf.pos);
+-    else if (tag === 3) layer._keys.push(pbf.readString());
+-    else if (tag === 4) layer._values.push(readValueMessage(pbf));
+-}
++},{"big-rat/sub":46}],409:[function(require,module,exports){
++'use strict'
+ 
+-function readValueMessage(pbf) {
+-    var value = null,
+-        end = pbf.readVarint() + pbf.pos;
++var compareCell = require('compare-cell')
++var compareOrientedCell = require('compare-oriented-cell')
++var orientation = require('cell-orientation')
+ 
+-    while (pbf.pos < end) {
+-        var tag = pbf.readVarint() >> 3;
++module.exports = reduceCellComplex
+ 
+-        value = tag === 1 ? pbf.readString() :
+-            tag === 2 ? pbf.readFloat() :
+-            tag === 3 ? pbf.readDouble() :
+-            tag === 4 ? pbf.readVarint64() :
+-            tag === 5 ? pbf.readVarint() :
+-            tag === 6 ? pbf.readSVarint() :
+-            tag === 7 ? pbf.readBoolean() : null;
++function reduceCellComplex(cells) {
++  cells.sort(compareOrientedCell)
++  var n = cells.length
++  var ptr = 0
++  for(var i=0; i<n; ++i) {
++    var c = cells[i]
++    var o = orientation(c)
++    if(o === 0) {
++      continue
+     }
+-
+-    return value;
++    if(ptr > 0) {
++      var f = cells[ptr-1]
++      if(compareCell(c, f) === 0 &&
++         orientation(f)    !== o) {
++        ptr -= 1
++        continue
++      }
++    }
++    cells[ptr++] = c
++  }
++  cells.length = ptr
++  return cells
+ }
+ 
+-// return feature `i` from this layer as a `VectorTileFeature`
+-VectorTileLayer.prototype.feature = function(i) {
+-    if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');
+-
+-    this._pbf.pos = this._features[i];
++},{"cell-orientation":68,"compare-cell":77,"compare-oriented-cell":78}],410:[function(require,module,exports){
++/*!
++ * repeat-string <https://github.com/jonschlinkert/repeat-string>
++ *
++ * Copyright (c) 2014-2015, Jon Schlinkert.
++ * Licensed under the MIT License.
++ */
+ 
+-    var end = this._pbf.readVarint() + this._pbf.pos;
+-    return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);
+-};
++'use strict';
+ 
+-},{"./vectortilefeature.js":415}],417:[function(require,module,exports){
+-var Pbf = require('pbf')
+-var vtpb = require('./vector-tile-pb')
+-var GeoJSONWrapper = require('./lib/geojson_wrapper')
++/**
++ * Results cache
++ */
+ 
+-module.exports = fromVectorTileJs
+-module.exports.fromVectorTileJs = fromVectorTileJs
+-module.exports.fromGeojsonVt = fromGeojsonVt
+-module.exports.GeoJSONWrapper = GeoJSONWrapper
++var res = '';
++var cache;
+ 
+ /**
+- * Serialize a vector-tile-js-created tile to pbf
+- *
+- * @param {Object} tile
+- * @return {Buffer} uncompressed, pbf-serialized tile data
++ * Expose `repeat`
+  */
+-function fromVectorTileJs (tile) {
+-  var layers = []
+-  for (var l in tile.layers) {
+-    layers.push(prepareLayer(tile.layers[l]))
+-  }
+ 
+-  var out = new Pbf()
+-  vtpb.tile.write({ layers: layers }, out)
+-  return out.finish()
+-}
++module.exports = repeat;
+ 
+ /**
+- * Serialized a geojson-vt-created tile to pbf.
++ * Repeat the given `string` the specified `number`
++ * of times.
+  *
+- * @param {Object} layers - An object mapping layer names to geojson-vt-created vector tile objects
+- * @return {Buffer} uncompressed, pbf-serialized tile data
++ * **Example:**
++ *
++ * ```js
++ * var repeat = require('repeat-string');
++ * repeat('A', 5);
++ * //=> AAAAA
++ * ```
++ *
++ * @param {String} `string` The string to repeat
++ * @param {Number} `number` The number of times to repeat the string
++ * @return {String} Repeated string
++ * @api public
+  */
+-function fromGeojsonVt (layers) {
+-  var l = {}
+-  for (var k in layers) {
+-    l[k] = new GeoJSONWrapper(layers[k].features)
+-    l[k].name = k
+-  }
+-  return fromVectorTileJs({layers: l})
+-}
+ 
+-/**
+- * Prepare the given layer to be serialized by the auto-generated pbf
+- * serializer by encoding the feature geometry and properties.
+- */
+-function prepareLayer (layer) {
+-  var preparedLayer = {
+-    name: layer.name || '',
+-    version: layer.version || 1,
+-    extent: layer.extent || 4096,
+-    keys: [],
+-    values: [],
+-    features: []
++function repeat(str, num) {
++  if (typeof str !== 'string') {
++    throw new TypeError('repeat-string expects a string.');
+   }
+ 
+-  var keycache = {}
+-  var valuecache = {}
++  // cover common, quick use cases
++  if (num === 1) return str;
++  if (num === 2) return str + str;
+ 
+-  for (var i = 0; i < layer.length; i++) {
+-    var feature = layer.feature(i)
+-    feature.geometry = encodeGeometry(feature.loadGeometry())
++  var max = str.length * num;
++  if (cache !== str || typeof cache === 'undefined') {
++    cache = str;
++    res = '';
++  }
+ 
+-    var tags = []
+-    for (var key in feature.properties) {
+-      var keyIndex = keycache[key]
+-      if (typeof keyIndex === 'undefined') {
+-        preparedLayer.keys.push(key)
+-        keyIndex = preparedLayer.keys.length - 1
+-        keycache[key] = keyIndex
+-      }
+-      var value = wrapValue(feature.properties[key])
+-      var valueIndex = valuecache[value.key]
+-      if (typeof valueIndex === 'undefined') {
+-        preparedLayer.values.push(value)
+-        valueIndex = preparedLayer.values.length - 1
+-        valuecache[value.key] = valueIndex
+-      }
+-      tags.push(keyIndex)
+-      tags.push(valueIndex)
++  while (max > res.length && num > 0) {
++    if (num & 1) {
++      res += str;
+     }
+ 
+-    feature.tags = tags
+-    preparedLayer.features.push(feature)
++    num >>= 1;
++    if (!num) break;
++    str += str;
+   }
+ 
+-  return preparedLayer
++  return res.substr(0, max);
+ }
+ 
+-function command (cmd, length) {
+-  return (length << 3) + (cmd & 0x7)
+-}
+ 
+-function zigzag (num) {
+-  return (num << 1) ^ (num >> 31)
+-}
++},{}],411:[function(require,module,exports){
++// Copyright 2014 Simon Lydell
++// X11 (“MIT”) Licensed. (See LICENSE.)
++
++void (function(root, factory) {
++  if (typeof define === "function" && define.amd) {
++    define(factory)
++  } else if (typeof exports === "object") {
++    module.exports = factory()
++  } else {
++    root.resolveUrl = factory()
++  }
++}(this, function() {
++
++  function resolveUrl(/* ...urls */) {
++    var numUrls = arguments.length
++
++    if (numUrls === 0) {
++      throw new Error("resolveUrl requires at least one argument; got none.")
++    }
++
++    var base = document.createElement("base")
++    base.href = arguments[0]
++
++    if (numUrls === 1) {
++      return base.href
++    }
++
++    var head = document.getElementsByTagName("head")[0]
++    head.insertBefore(base, head.firstChild)
++
++    var a = document.createElement("a")
++    var resolved
++
++    for (var index = 1; index < numUrls; index++) {
++      a.href = arguments[index]
++      resolved = a.href
++      base.href = resolved
++    }
++
++    head.removeChild(base)
++
++    return resolved
++  }
++
++  return resolveUrl
++
++}));
+ 
+-/**
+- * Encode a polygon's geometry into an array ready to be serialized
+- * to mapbox vector tile specified geometry data.
+- *
+- * @param {Array} Rings, each being an array of [x, y] tile-space coordinates
+- * @return {Array} encoded geometry
+- */
+-function encodeGeometry (geometry) {
+-  var encoded = []
+-  var x = 0
+-  var y = 0
+-  var rings = geometry.length
+-  for (var r = 0; r < rings; r++) {
+-    var ring = geometry[r]
+-    encoded.push(command(1, 1)) // moveto
+-    for (var i = 0; i < ring.length; i++) {
+-      if (i === 1) {
+-        encoded.push(command(2, ring.length - 1)) // lineto
+-      }
+-      var dx = ring[i].x - x
+-      var dy = ring[i].y - y
+-      encoded.push(zigzag(dx), zigzag(dy))
+-      x += dx
+-      y += dy
+-    }
++},{}],412:[function(require,module,exports){
++(function (global){
++module.exports =
++  global.performance &&
++  global.performance.now ? function now() {
++    return performance.now()
++  } : Date.now || function now() {
++    return +new Date
+   }
+ 
+-  return encoded
+-}
++}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{}],413:[function(require,module,exports){
++"use strict"
+ 
+-/**
+- * Wrap a property value according to its type. The returned object
+- * is of the form { xxxx_value: primitiveValue }, which is what the generated
+- * protobuf serializer expects.
+- */
+-function wrapValue (value) {
+-  var result
+-  var type = typeof value
+-  if (type === 'string') {
+-    result = { string_value: value }
+-  } else if (type === 'boolean') {
+-    result = { bool_value: value }
+-  } else if (type === 'number') {
+-    if (value !== (value | 0)) {
+-      result = { float_value: value }
+-    } else if (value < 0) {
+-      result = { sint_value: value }
+-    } else {
+-      result = { uint_value: value }
++module.exports = compressExpansion
++
++function compressExpansion(e) {
++  var m = e.length
++  var Q = e[e.length-1]
++  var bottom = m
++  for(var i=m-2; i>=0; --i) {
++    var a = Q
++    var b = e[i]
++    Q = a + b
++    var bv = Q - a
++    var q = b - bv
++    if(q) {
++      e[--bottom] = Q
++      Q = q
+     }
+-  } else {
+-    result = { string_value: '' + value }
+   }
+-
+-  result.key = type + ':' + value
+-  return result
+-}
+-
+-},{"./lib/geojson_wrapper":418,"./vector-tile-pb":419,"pbf":402}],418:[function(require,module,exports){
+-'use strict'
+-
+-var Point = require('point-geometry')
+-var VectorTileFeature = require('vector-tile').VectorTileFeature
+-
+-module.exports = GeoJSONWrapper
+-
+-// conform to vectortile api
+-function GeoJSONWrapper (features) {
+-  this.features = features
+-  this.length = features.length
+-}
+-
+-GeoJSONWrapper.prototype.feature = function (i) {
+-  return new FeatureWrapper(this.features[i])
++  var top = 0
++  for(var i=bottom; i<m; ++i) {
++    var a = e[i]
++    var b = Q
++    Q = a + b
++    var bv = Q - a
++    var q = b - bv
++    if(q) {
++      e[top++] = q
++    }
++  }
++  e[top++] = Q
++  e.length = top
++  return e
+ }
++},{}],414:[function(require,module,exports){
++"use strict"
+ 
+-function FeatureWrapper (feature) {
+-  this.type = feature.type
+-  this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry
+-  this.properties = feature.tags
+-  this.extent = 4096
+-}
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
++var robustScale = require("robust-scale")
++var compress = require("robust-compress")
+ 
+-FeatureWrapper.prototype.loadGeometry = function () {
+-  var rings = this.rawGeometry
+-  this.geometry = []
++var NUM_EXPANDED = 6
+ 
+-  for (var i = 0; i < rings.length; i++) {
+-    var ring = rings[i]
+-    var newRing = []
+-    for (var j = 0; j < ring.length; j++) {
+-      newRing.push(new Point(ring[j][0], ring[j][1]))
++function cofactor(m, c) {
++  var result = new Array(m.length-1)
++  for(var i=1; i<m.length; ++i) {
++    var r = result[i-1] = new Array(m.length-1)
++    for(var j=0,k=0; j<m.length; ++j) {
++      if(j === c) {
++        continue
++      }
++      r[k++] = m[i][j]
+     }
+-    this.geometry.push(newRing)
+   }
+-  return this.geometry
++  return result
+ }
+ 
+-FeatureWrapper.prototype.bbox = function () {
+-  if (!this.geometry) this.loadGeometry()
+-
+-  var rings = this.geometry
+-  var x1 = Infinity
+-  var x2 = -Infinity
+-  var y1 = Infinity
+-  var y2 = -Infinity
++function matrix(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = new Array(n)
++    for(var j=0; j<n; ++j) {
++      result[i][j] = ["m[", i, "][", j, "]"].join("")
++    }
++  }
++  return result
++}
+ 
+-  for (var i = 0; i < rings.length; i++) {
+-    var ring = rings[i]
++function sign(n) {
++  if(n & 1) {
++    return "-"
++  }
++  return ""
++}
+ 
+-    for (var j = 0; j < ring.length; j++) {
+-      var coord = ring[j]
++function generateSum(expr) {
++  if(expr.length === 1) {
++    return expr[0]
++  } else if(expr.length === 2) {
++    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  } else {
++    var m = expr.length>>1
++    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++  }
++}
+ 
+-      x1 = Math.min(x1, coord.x)
+-      x2 = Math.max(x2, coord.x)
+-      y1 = Math.min(y1, coord.y)
+-      y2 = Math.max(y2, coord.y)
++function determinant(m) {
++  if(m.length === 2) {
++    return ["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")
++  } else {
++    var expr = []
++    for(var i=0; i<m.length; ++i) {
++      expr.push(["scale(", determinant(cofactor(m, i)), ",", sign(i), m[0][i], ")"].join(""))
+     }
++    return generateSum(expr)
+   }
+-
+-  return [x1, y1, x2, y2]
+ }
+ 
+-FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON
+-
+-},{"point-geometry":404,"vector-tile":413}],419:[function(require,module,exports){
+-'use strict';
++function compileDeterminant(n) {
++  var proc = new Function("sum", "scale", "prod", "compress", [
++    "function robustDeterminant",n, "(m){return compress(", 
++      determinant(matrix(n)),
++    ")};return robustDeterminant", n].join(""))
++  return proc(robustSum, robustScale, twoProduct, compress)
++}
+ 
+-// tile ========================================
++var CACHE = [
++  function robustDeterminant0() { return [0] },
++  function robustDeterminant1(m) { return [m[0][0]] }
++]
+ 
+-var tile = exports.tile = {read: readTile, write: writeTile};
++function generateDispatch() {
++  while(CACHE.length < NUM_EXPANDED) {
++    CACHE.push(compileDeterminant(CACHE.length))
++  }
++  var procArgs = []
++  var code = ["function robustDeterminant(m){switch(m.length){"]
++  for(var i=0; i<NUM_EXPANDED; ++i) {
++    procArgs.push("det" + i)
++    code.push("case ", i, ":return det", i, "(m);")
++  }
++  code.push("}\
++var det=CACHE[m.length];\
++if(!det)\
++det=CACHE[m.length]=gen(m.length);\
++return det(m);\
++}\
++return robustDeterminant")
++  procArgs.push("CACHE", "gen", code.join(""))
++  var proc = Function.apply(undefined, procArgs)
++  module.exports = proc.apply(undefined, CACHE.concat([CACHE, compileDeterminant]))
++  for(var i=0; i<CACHE.length; ++i) {
++    module.exports[i] = CACHE[i]
++  }
++}
+ 
+-tile.GeomType = {
+-    "Unknown": 0,
+-    "Point": 1,
+-    "LineString": 2,
+-    "Polygon": 3
+-};
++generateDispatch()
++},{"robust-compress":413,"robust-scale":420,"robust-sum":423,"two-product":447}],415:[function(require,module,exports){
++"use strict"
+ 
+-function readTile(pbf, end) {
+-    return pbf.readFields(readTileField, {"layers": []}, end);
+-}
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
+ 
+-function readTileField(tag, tile, pbf) {
+-    if (tag === 3) tile.layers.push(readLayer(pbf, pbf.readVarint() + pbf.pos));
+-}
++module.exports = robustDotProduct
+ 
+-function writeTile(tile, pbf) {
+-    var i;
+-    if (tile.layers !== undefined) for (i = 0; i < tile.layers.length; i++) pbf.writeMessage(3, writeLayer, tile.layers[i]);
++function robustDotProduct(a, b) {
++  var r = twoProduct(a[0], b[0])
++  for(var i=1; i<a.length; ++i) {
++    r = robustSum(r, twoProduct(a[i], b[i]))
++  }
++  return r
+ }
++},{"robust-sum":423,"two-product":447}],416:[function(require,module,exports){
++"use strict"
+ 
+-// value ========================================
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
++var robustDiff = require("robust-subtract")
++var robustScale = require("robust-scale")
+ 
+-tile.value = {read: readValue, write: writeValue};
++var NUM_EXPAND = 6
+ 
+-function readValue(pbf, end) {
+-    return pbf.readFields(readValueField, {}, end);
++function cofactor(m, c) {
++  var result = new Array(m.length-1)
++  for(var i=1; i<m.length; ++i) {
++    var r = result[i-1] = new Array(m.length-1)
++    for(var j=0,k=0; j<m.length; ++j) {
++      if(j === c) {
++        continue
++      }
++      r[k++] = m[i][j]
++    }
++  }
++  return result
+ }
+ 
+-function readValueField(tag, value, pbf) {
+-    if (tag === 1) value.string_value = pbf.readString();
+-    else if (tag === 2) value.float_value = pbf.readFloat();
+-    else if (tag === 3) value.double_value = pbf.readDouble();
+-    else if (tag === 4) value.int_value = pbf.readVarint();
+-    else if (tag === 5) value.uint_value = pbf.readVarint();
+-    else if (tag === 6) value.sint_value = pbf.readSVarint();
+-    else if (tag === 7) value.bool_value = pbf.readBoolean();
++function matrix(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = new Array(n)
++    for(var j=0; j<n; ++j) {
++      result[i][j] = ["m", j, "[", (n-i-2), "]"].join("")
++    }
++  }
++  return result
+ }
+ 
+-function writeValue(value, pbf) {
+-    if (value.string_value !== undefined) pbf.writeStringField(1, value.string_value);
+-    if (value.float_value !== undefined) pbf.writeFloatField(2, value.float_value);
+-    if (value.double_value !== undefined) pbf.writeDoubleField(3, value.double_value);
+-    if (value.int_value !== undefined) pbf.writeVarintField(4, value.int_value);
+-    if (value.uint_value !== undefined) pbf.writeVarintField(5, value.uint_value);
+-    if (value.sint_value !== undefined) pbf.writeSVarintField(6, value.sint_value);
+-    if (value.bool_value !== undefined) pbf.writeBooleanField(7, value.bool_value);
++function generateSum(expr) {
++  if(expr.length === 1) {
++    return expr[0]
++  } else if(expr.length === 2) {
++    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  } else {
++    var m = expr.length>>1
++    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++  }
+ }
+ 
+-// feature ========================================
++function makeProduct(a, b) {
++  if(a.charAt(0) === "m") {
++    if(b.charAt(0) === "w") {
++      var toks = a.split("[")
++      return ["w", b.substr(1), "m", toks[0].substr(1)].join("")
++    } else {
++      return ["prod(", a, ",", b, ")"].join("")
++    }
++  } else {
++    return makeProduct(b, a)
++  }
++}
+ 
+-tile.feature = {read: readFeature, write: writeFeature};
++function sign(s) {
++  if(s & 1 !== 0) {
++    return "-"
++  }
++  return ""
++}
+ 
+-function readFeature(pbf, end) {
+-    var feature = pbf.readFields(readFeatureField, {}, end);
+-    if (feature.type === undefined) feature.type = "Unknown";
+-    return feature;
++function determinant(m) {
++  if(m.length === 2) {
++    return [["diff(", makeProduct(m[0][0], m[1][1]), ",", makeProduct(m[1][0], m[0][1]), ")"].join("")]
++  } else {
++    var expr = []
++    for(var i=0; i<m.length; ++i) {
++      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
++    }
++    return expr
++  }
+ }
+ 
+-function readFeatureField(tag, feature, pbf) {
+-    if (tag === 1) feature.id = pbf.readVarint();
+-    else if (tag === 2) feature.tags = pbf.readPackedVarint();
+-    else if (tag === 3) feature.type = pbf.readVarint();
+-    else if (tag === 4) feature.geometry = pbf.readPackedVarint();
++function makeSquare(d, n) {
++  var terms = []
++  for(var i=0; i<n-2; ++i) {
++    terms.push(["prod(m", d, "[", i, "],m", d, "[", i, "])"].join(""))
++  }
++  return generateSum(terms)
+ }
+ 
+-function writeFeature(feature, pbf) {
+-    if (feature.id !== undefined) pbf.writeVarintField(1, feature.id);
+-    if (feature.tags !== undefined) pbf.writePackedVarint(2, feature.tags);
+-    if (feature.type !== undefined) pbf.writeVarintField(3, feature.type);
+-    if (feature.geometry !== undefined) pbf.writePackedVarint(4, feature.geometry);
++function orientation(n) {
++  var pos = []
++  var neg = []
++  var m = matrix(n)
++  for(var i=0; i<n; ++i) {
++    m[0][i] = "1"
++    m[n-1][i] = "w"+i
++  } 
++  for(var i=0; i<n; ++i) {
++    if((i&1)===0) {
++      pos.push.apply(pos,determinant(cofactor(m, i)))
++    } else {
++      neg.push.apply(neg,determinant(cofactor(m, i)))
++    }
++  }
++  var posExpr = generateSum(pos)
++  var negExpr = generateSum(neg)
++  var funcName = "exactInSphere" + n
++  var funcArgs = []
++  for(var i=0; i<n; ++i) {
++    funcArgs.push("m" + i)
++  }
++  var code = ["function ", funcName, "(", funcArgs.join(), "){"]
++  for(var i=0; i<n; ++i) {
++    code.push("var w",i,"=",makeSquare(i,n),";")
++    for(var j=0; j<n; ++j) {
++      if(j !== i) {
++        code.push("var w",i,"m",j,"=scale(w",i,",m",j,"[0]);")
++      }
++    }
++  }
++  code.push("var p=", posExpr, ",n=", negExpr, ",d=diff(p,n);return d[d.length-1];}return ", funcName)
++  var proc = new Function("sum", "diff", "prod", "scale", code.join(""))
++  return proc(robustSum, robustDiff, twoProduct, robustScale)
+ }
+ 
+-// layer ========================================
++function inSphere0() { return 0 }
++function inSphere1() { return 0 }
++function inSphere2() { return 0 }
+ 
+-tile.layer = {read: readLayer, write: writeLayer};
++var CACHED = [
++  inSphere0,
++  inSphere1,
++  inSphere2
++]
+ 
+-function readLayer(pbf, end) {
+-    return pbf.readFields(readLayerField, {"features": [], "keys": [], "values": []}, end);
++function slowInSphere(args) {
++  var proc = CACHED[args.length]
++  if(!proc) {
++    proc = CACHED[args.length] = orientation(args.length)
++  }
++  return proc.apply(undefined, args)
+ }
+ 
+-function readLayerField(tag, layer, pbf) {
+-    if (tag === 15) layer.version = pbf.readVarint();
+-    else if (tag === 1) layer.name = pbf.readString();
+-    else if (tag === 2) layer.features.push(readFeature(pbf, pbf.readVarint() + pbf.pos));
+-    else if (tag === 3) layer.keys.push(pbf.readString());
+-    else if (tag === 4) layer.values.push(readValue(pbf, pbf.readVarint() + pbf.pos));
+-    else if (tag === 5) layer.extent = pbf.readVarint();
+-}
++function generateInSphereTest() {
++  while(CACHED.length <= NUM_EXPAND) {
++    CACHED.push(orientation(CACHED.length))
++  }
++  var args = []
++  var procArgs = ["slow"]
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    args.push("a" + i)
++    procArgs.push("o" + i)
++  }
++  var code = [
++    "function testInSphere(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
++  ]
++  for(var i=2; i<=NUM_EXPAND; ++i) {
++    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
++  }
++  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return testInSphere")
++  procArgs.push(code.join(""))
+ 
+-function writeLayer(layer, pbf) {
+-    if (layer.version !== undefined) pbf.writeVarintField(15, layer.version);
+-    if (layer.name !== undefined) pbf.writeStringField(1, layer.name);
+-    var i;
+-    if (layer.features !== undefined) for (i = 0; i < layer.features.length; i++) pbf.writeMessage(2, writeFeature, layer.features[i]);
+-    if (layer.keys !== undefined) for (i = 0; i < layer.keys.length; i++) pbf.writeStringField(3, layer.keys[i]);
+-    if (layer.values !== undefined) for (i = 0; i < layer.values.length; i++) pbf.writeMessage(4, writeValue, layer.values[i]);
+-    if (layer.extent !== undefined) pbf.writeVarintField(5, layer.extent);
++  var proc = Function.apply(undefined, procArgs)
++
++  module.exports = proc.apply(undefined, [slowInSphere].concat(CACHED))
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    module.exports[i] = CACHED[i]
++  }
+ }
+ 
+-},{}],420:[function(require,module,exports){
+-var bundleFn = arguments[3];
+-var sources = arguments[4];
+-var cache = arguments[5];
++generateInSphereTest()
++},{"robust-scale":420,"robust-subtract":422,"robust-sum":423,"two-product":447}],417:[function(require,module,exports){
++"use strict"
+ 
+-var stringify = JSON.stringify;
++var determinant = require("robust-determinant")
+ 
+-module.exports = function (fn, options) {
+-    var wkey;
+-    var cacheKeys = Object.keys(cache);
++var NUM_EXPAND = 6
+ 
+-    for (var i = 0, l = cacheKeys.length; i < l; i++) {
+-        var key = cacheKeys[i];
+-        var exp = cache[key].exports;
+-        // Using babel as a transpiler to use esmodule, the export will always
+-        // be an object with the default export as a property of it. To ensure
+-        // the existing api and babel esmodule exports are both supported we
+-        // check for both
+-        if (exp === fn || exp && exp.default === fn) {
+-            wkey = key;
+-            break;
++function generateSolver(n) {
++  var funcName = "robustLinearSolve" + n + "d"
++  var code = ["function ", funcName, "(A,b){return ["]
++  for(var i=0; i<n; ++i) {
++    code.push("det([")
++    for(var j=0; j<n; ++j) {
++      if(j > 0) {
++        code.push(",")
++      }
++      code.push("[")
++      for(var k=0; k<n; ++k) {
++        if(k > 0) {
++          code.push(",")
+         }
+-    }
+-
+-    if (!wkey) {
+-        wkey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
+-        var wcache = {};
+-        for (var i = 0, l = cacheKeys.length; i < l; i++) {
+-            var key = cacheKeys[i];
+-            wcache[key] = key;
++        if(k === i) {
++          code.push("+b[", j, "]")
++        } else {
++          code.push("+A[", j, "][", k, "]")
+         }
+-        sources[wkey] = [
+-            Function(['require','module','exports'], '(' + fn + ')(self)'),
+-            wcache
+-        ];
++      }
++      code.push("]")
+     }
+-    var skey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
+-
+-    var scache = {}; scache[wkey] = wkey;
+-    sources[skey] = [
+-        Function(['require'], (
+-            // try to call default if defined to also support babel esmodule
+-            // exports
+-            'var f = require(' + stringify(wkey) + ');' +
+-            '(f.default ? f.default : f)(self);'
+-        )),
+-        scache
+-    ];
+-
+-    var src = '(' + bundleFn + ')({'
+-        + Object.keys(sources).map(function (key) {
+-            return stringify(key) + ':['
+-                + sources[key][0]
+-                + ',' + stringify(sources[key][1]) + ']'
+-            ;
+-        }).join(',')
+-        + '},{},[' + stringify(skey) + '])'
+-    ;
++    code.push("]),")
++  }
++  code.push("det(A)]}return ", funcName)
++  var proc = new Function("det", code.join(""))
++  if(n < 6) {
++    return proc(determinant[n])
++  }
++  return proc(determinant)
++}
+ 
+-    var URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
++function robustLinearSolve0d() {
++  return [ 0 ]
++}
+ 
+-    var blob = new Blob([src], { type: 'text/javascript' });
+-    if (options && options.bare) { return blob; }
+-    var workerUrl = URL.createObjectURL(blob);
+-    var worker = new Worker(workerUrl);
+-    if (typeof URL.revokeObjectURL == "function") {
+-      URL.revokeObjectURL(workerUrl);
+-    }
+-    return worker;
+-};
++function robustLinearSolve1d(A, b) {
++  return [ [ b[0] ], [ A[0][0] ] ]
++}
+ 
+-},{}],421:[function(require,module,exports){
+-'use strict'
++var CACHE = [
++  robustLinearSolve0d,
++  robustLinearSolve1d
++]
+ 
+-module.exports = mouseListen
++function generateDispatch() {
++  while(CACHE.length < NUM_EXPAND) {
++    CACHE.push(generateSolver(CACHE.length))
++  }
++  var procArgs = []
++  var code = ["function dispatchLinearSolve(A,b){switch(A.length){"]
++  for(var i=0; i<NUM_EXPAND; ++i) {
++    procArgs.push("s" + i)
++    code.push("case ", i, ":return s", i, "(A,b);")
++  }
++  code.push("}var s=CACHE[A.length];if(!s)s=CACHE[A.length]=g(A.length);return s(A,b)}return dispatchLinearSolve")
++  procArgs.push("CACHE", "g", code.join(""))
++  var proc = Function.apply(undefined, procArgs)
++  module.exports = proc.apply(undefined, CACHE.concat([CACHE, generateSolver]))
++  for(var i=0; i<NUM_EXPAND; ++i) {
++    module.exports[i] = CACHE[i]
++  }
++}
+ 
+-var mouse = require('mouse-event')
++generateDispatch()
++},{"robust-determinant":414}],418:[function(require,module,exports){
++"use strict"
+ 
+-function mouseListen(element, callback) {
++var twoProduct = require("two-product")
++var robustSum = require("robust-sum")
++var robustScale = require("robust-scale")
++var robustSubtract = require("robust-subtract")
+ 
+-  if(!callback) {
+-    callback = element
+-    element = window
+-  }
++var NUM_EXPAND = 5
+ 
+-  var buttonState = 0
+-  var x = 0
+-  var y = 0
+-  var mods = {
+-    shift:   false,
+-    alt:     false,
+-    control: false,
+-    meta:    false
+-  }
+-  var attached = false
++var EPSILON     = 1.1102230246251565e-16
++var ERRBOUND3   = (3.0 + 16.0 * EPSILON) * EPSILON
++var ERRBOUND4   = (7.0 + 56.0 * EPSILON) * EPSILON
+ 
+-  function updateMods(ev) {
+-    var changed = false
+-    if('altKey' in ev) {
+-      changed = changed || ev.altKey !== mods.alt
+-      mods.alt = !!ev.altKey
+-    }
+-    if('shiftKey' in ev) {
+-      changed = changed || ev.shiftKey !== mods.shift
+-      mods.shift = !!ev.shiftKey
+-    }
+-    if('ctrlKey' in ev) {
+-      changed = changed || ev.ctrlKey !== mods.control
+-      mods.control = !!ev.ctrlKey
+-    }
+-    if('metaKey' in ev) {
+-      changed = changed || ev.metaKey !== mods.meta
+-      mods.meta = !!ev.metaKey
++function cofactor(m, c) {
++  var result = new Array(m.length-1)
++  for(var i=1; i<m.length; ++i) {
++    var r = result[i-1] = new Array(m.length-1)
++    for(var j=0,k=0; j<m.length; ++j) {
++      if(j === c) {
++        continue
++      }
++      r[k++] = m[i][j]
+     }
+-    return changed
+   }
++  return result
++}
+ 
+-  function handleEvent(nextButtons, ev) {
+-    var nextX = mouse.x(ev)
+-    var nextY = mouse.y(ev)
+-    if('buttons' in ev) {
+-      nextButtons = ev.buttons|0
+-    }
+-    if(nextButtons !== buttonState ||
+-       nextX !== x ||
+-       nextY !== y ||
+-       updateMods(ev)) {
+-      buttonState = nextButtons|0
+-      x = nextX||0
+-      y = nextY||0
+-      callback(buttonState, x, y, mods)
++function matrix(n) {
++  var result = new Array(n)
++  for(var i=0; i<n; ++i) {
++    result[i] = new Array(n)
++    for(var j=0; j<n; ++j) {
++      result[i][j] = ["m", j, "[", (n-i-1), "]"].join("")
+     }
+   }
++  return result
++}
+ 
+-  function clearState(ev) {
+-    handleEvent(0, ev)
++function sign(n) {
++  if(n & 1) {
++    return "-"
+   }
++  return ""
++}
+ 
+-  function handleBlur() {
+-    if(buttonState ||
+-      x ||
+-      y ||
+-      mods.shift ||
+-      mods.alt ||
+-      mods.meta ||
+-      mods.control) {
++function generateSum(expr) {
++  if(expr.length === 1) {
++    return expr[0]
++  } else if(expr.length === 2) {
++    return ["sum(", expr[0], ",", expr[1], ")"].join("")
++  } else {
++    var m = expr.length>>1
++    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++  }
++}
+ 
+-      x = y = 0
+-      buttonState = 0
+-      mods.shift = mods.alt = mods.control = mods.meta = false
+-      callback(0, 0, 0, mods)
++function determinant(m) {
++  if(m.length === 2) {
++    return [["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")]
++  } else {
++    var expr = []
++    for(var i=0; i<m.length; ++i) {
++      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
+     }
++    return expr
+   }
++}
+ 
+-  function handleMods(ev) {
+-    if(updateMods(ev)) {
+-      callback(buttonState, x, y, mods)
++function orientation(n) {
++  var pos = []
++  var neg = []
++  var m = matrix(n)
++  var args = []
++  for(var i=0; i<n; ++i) {
++    if((i&1)===0) {
++      pos.push.apply(pos, determinant(cofactor(m, i)))
++    } else {
++      neg.push.apply(neg, determinant(cofactor(m, i)))
+     }
++    args.push("m" + i)
+   }
++  var posExpr = generateSum(pos)
++  var negExpr = generateSum(neg)
++  var funcName = "orientation" + n + "Exact"
++  var code = ["function ", funcName, "(", args.join(), "){var p=", posExpr, ",n=", negExpr, ",d=sub(p,n);\
++return d[d.length-1];};return ", funcName].join("")
++  var proc = new Function("sum", "prod", "scale", "sub", code)
++  return proc(robustSum, twoProduct, robustScale, robustSubtract)
++}
+ 
+-  function handleMouseMove(ev) {
+-    if(mouse.buttons(ev) === 0) {
+-      handleEvent(0, ev)
++var orientation3Exact = orientation(3)
++var orientation4Exact = orientation(4)
++
++var CACHED = [
++  function orientation0() { return 0 },
++  function orientation1() { return 0 },
++  function orientation2(a, b) { 
++    return b[0] - a[0]
++  },
++  function orientation3(a, b, c) {
++    var l = (a[1] - c[1]) * (b[0] - c[0])
++    var r = (a[0] - c[0]) * (b[1] - c[1])
++    var det = l - r
++    var s
++    if(l > 0) {
++      if(r <= 0) {
++        return det
++      } else {
++        s = l + r
++      }
++    } else if(l < 0) {
++      if(r >= 0) {
++        return det
++      } else {
++        s = -(l + r)
++      }
+     } else {
+-      handleEvent(buttonState, ev)
++      return det
++    }
++    var tol = ERRBOUND3 * s
++    if(det >= tol || det <= -tol) {
++      return det
+     }
++    return orientation3Exact(a, b, c)
++  },
++  function orientation4(a,b,c,d) {
++    var adx = a[0] - d[0]
++    var bdx = b[0] - d[0]
++    var cdx = c[0] - d[0]
++    var ady = a[1] - d[1]
++    var bdy = b[1] - d[1]
++    var cdy = c[1] - d[1]
++    var adz = a[2] - d[2]
++    var bdz = b[2] - d[2]
++    var cdz = c[2] - d[2]
++    var bdxcdy = bdx * cdy
++    var cdxbdy = cdx * bdy
++    var cdxady = cdx * ady
++    var adxcdy = adx * cdy
++    var adxbdy = adx * bdy
++    var bdxady = bdx * ady
++    var det = adz * (bdxcdy - cdxbdy) 
++            + bdz * (cdxady - adxcdy)
++            + cdz * (adxbdy - bdxady)
++    var permanent = (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * Math.abs(adz)
++                  + (Math.abs(cdxady) + Math.abs(adxcdy)) * Math.abs(bdz)
++                  + (Math.abs(adxbdy) + Math.abs(bdxady)) * Math.abs(cdz)
++    var tol = ERRBOUND4 * permanent
++    if ((det > tol) || (-det > tol)) {
++      return det
++    }
++    return orientation4Exact(a,b,c,d)
+   }
++]
+ 
+-  function handleMouseDown(ev) {
+-    handleEvent(buttonState | mouse.buttons(ev), ev)
++function slowOrient(args) {
++  var proc = CACHED[args.length]
++  if(!proc) {
++    proc = CACHED[args.length] = orientation(args.length)
+   }
++  return proc.apply(undefined, args)
++}
+ 
+-  function handleMouseUp(ev) {
+-    handleEvent(buttonState & ~mouse.buttons(ev), ev)
++function generateOrientationProc() {
++  while(CACHED.length <= NUM_EXPAND) {
++    CACHED.push(orientation(CACHED.length))
+   }
++  var args = []
++  var procArgs = ["slow"]
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    args.push("a" + i)
++    procArgs.push("o" + i)
++  }
++  var code = [
++    "function getOrientation(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
++  ]
++  for(var i=2; i<=NUM_EXPAND; ++i) {
++    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
++  }
++  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return getOrientation")
++  procArgs.push(code.join(""))
+ 
+-  function attachListeners() {
+-    if(attached) {
+-      return
+-    }
+-    attached = true
+-
+-    element.addEventListener('mousemove', handleMouseMove)
++  var proc = Function.apply(undefined, procArgs)
++  module.exports = proc.apply(undefined, [slowOrient].concat(CACHED))
++  for(var i=0; i<=NUM_EXPAND; ++i) {
++    module.exports[i] = CACHED[i]
++  }
++}
+ 
+-    element.addEventListener('mousedown', handleMouseDown)
++generateOrientationProc()
++},{"robust-scale":420,"robust-subtract":422,"robust-sum":423,"two-product":447}],419:[function(require,module,exports){
++"use strict"
+ 
+-    element.addEventListener('mouseup', handleMouseUp)
++var robustSum = require("robust-sum")
++var robustScale = require("robust-scale")
+ 
+-    element.addEventListener('mouseleave', clearState)
+-    element.addEventListener('mouseenter', clearState)
+-    element.addEventListener('mouseout', clearState)
+-    element.addEventListener('mouseover', clearState)
++module.exports = robustProduct
+ 
+-    element.addEventListener('blur', handleBlur)
++function robustProduct(a, b) {
++  if(a.length === 1) {
++    return robustScale(b, a[0])
++  }
++  if(b.length === 1) {
++    return robustScale(a, b[0])
++  }
++  if(a.length === 0 || b.length === 0) {
++    return [0]
++  }
++  var r = [0]
++  if(a.length < b.length) {
++    for(var i=0; i<a.length; ++i) {
++      r = robustSum(r, robustScale(b, a[i]))
++    }
++  } else {
++    for(var i=0; i<b.length; ++i) {
++      r = robustSum(r, robustScale(a, b[i]))
++    }    
++  }
++  return r
++}
++},{"robust-scale":420,"robust-sum":423}],420:[function(require,module,exports){
++"use strict"
+ 
+-    element.addEventListener('keyup', handleMods)
+-    element.addEventListener('keydown', handleMods)
+-    element.addEventListener('keypress', handleMods)
++var twoProduct = require("two-product")
++var twoSum = require("two-sum")
+ 
+-    if(element !== window) {
+-      window.addEventListener('blur', handleBlur)
++module.exports = scaleLinearExpansion
+ 
+-      window.addEventListener('keyup', handleMods)
+-      window.addEventListener('keydown', handleMods)
+-      window.addEventListener('keypress', handleMods)
++function scaleLinearExpansion(e, scale) {
++  var n = e.length
++  if(n === 1) {
++    var ts = twoProduct(e[0], scale)
++    if(ts[0]) {
++      return ts
+     }
++    return [ ts[1] ]
+   }
+-
+-  function detachListeners() {
+-    if(!attached) {
+-      return
++  var g = new Array(2 * n)
++  var q = [0.1, 0.1]
++  var t = [0.1, 0.1]
++  var count = 0
++  twoProduct(e[0], scale, q)
++  if(q[0]) {
++    g[count++] = q[0]
++  }
++  for(var i=1; i<n; ++i) {
++    twoProduct(e[i], scale, t)
++    var pq = q[1]
++    twoSum(pq, t[0], q)
++    if(q[0]) {
++      g[count++] = q[0]
+     }
+-    attached = false
+-
+-    element.removeEventListener('mousemove', handleMouseMove)
+-
+-    element.removeEventListener('mousedown', handleMouseDown)
++    var a = t[1]
++    var b = q[1]
++    var x = a + b
++    var bv = x - a
++    var y = b - bv
++    q[1] = x
++    if(y) {
++      g[count++] = y
++    }
++  }
++  if(q[1]) {
++    g[count++] = q[1]
++  }
++  if(count === 0) {
++    g[count++] = 0.0
++  }
++  g.length = count
++  return g
++}
++},{"two-product":447,"two-sum":448}],421:[function(require,module,exports){
++"use strict"
+ 
+-    element.removeEventListener('mouseup', handleMouseUp)
++module.exports = segmentsIntersect
+ 
+-    element.removeEventListener('mouseleave', clearState)
+-    element.removeEventListener('mouseenter', clearState)
+-    element.removeEventListener('mouseout', clearState)
+-    element.removeEventListener('mouseover', clearState)
++var orient = require("robust-orientation")[3]
+ 
+-    element.removeEventListener('blur', handleBlur)
++function checkCollinear(a0, a1, b0, b1) {
+ 
+-    element.removeEventListener('keyup', handleMods)
+-    element.removeEventListener('keydown', handleMods)
+-    element.removeEventListener('keypress', handleMods)
++  for(var d=0; d<2; ++d) {
++    var x0 = a0[d]
++    var y0 = a1[d]
++    var l0 = Math.min(x0, y0)
++    var h0 = Math.max(x0, y0)    
+ 
+-    if(element !== window) {
+-      window.removeEventListener('blur', handleBlur)
++    var x1 = b0[d]
++    var y1 = b1[d]
++    var l1 = Math.min(x1, y1)
++    var h1 = Math.max(x1, y1)    
+ 
+-      window.removeEventListener('keyup', handleMods)
+-      window.removeEventListener('keydown', handleMods)
+-      window.removeEventListener('keypress', handleMods)
++    if(h1 < l0 || h0 < l1) {
++      return false
+     }
+   }
+ 
+-  //Attach listeners
+-  attachListeners()
++  return true
++}
+ 
+-  var result = {
+-    element: element
++function segmentsIntersect(a0, a1, b0, b1) {
++  var x0 = orient(a0, b0, b1)
++  var y0 = orient(a1, b0, b1)
++  if((x0 > 0 && y0 > 0) || (x0 < 0 && y0 < 0)) {
++    return false
+   }
+ 
+-  Object.defineProperties(result, {
+-    enabled: {
+-      get: function() { return attached },
+-      set: function(f) {
+-        if(f) {
+-          attachListeners()
+-        } else {
+-          detachListeners
+-        }
+-      },
+-      enumerable: true
+-    },
+-    buttons: {
+-      get: function() { return buttonState },
+-      enumerable: true
+-    },
+-    x: {
+-      get: function() { return x },
+-      enumerable: true
+-    },
+-    y: {
+-      get: function() { return y },
+-      enumerable: true
+-    },
+-    mods: {
+-      get: function() { return mods },
+-      enumerable: true
+-    }
+-  })
++  var x1 = orient(b0, a0, a1)
++  var y1 = orient(b1, a0, a1)
++  if((x1 > 0 && y1 > 0) || (x1 < 0 && y1 < 0)) {
++    return false
++  }
+ 
+-  return result
++  //Check for degenerate collinear case
++  if(x0 === 0 && y0 === 0 && x1 === 0 && y1 === 0) {
++    return checkCollinear(a0, a1, b0, b1)
++  }
++
++  return true
+ }
++},{"robust-orientation":418}],422:[function(require,module,exports){
++"use strict"
+ 
+-},{"mouse-event":422}],422:[function(require,module,exports){
+-'use strict'
++module.exports = robustSubtract
+ 
+-function mouseButtons(ev) {
+-  if(typeof ev === 'object') {
+-    if('buttons' in ev) {
+-      return ev.buttons
+-    } else if('which' in ev) {
+-      var b = ev.which
+-      if(b === 2) {
+-        return 4
+-      } else if(b === 3) {
+-        return 2
+-      } else if(b > 0) {
+-        return 1<<(b-1)
++//Easy case: Add two scalars
++function scalarScalar(a, b) {
++  var x = a + b
++  var bv = x - a
++  var av = x - bv
++  var br = b - bv
++  var ar = a - av
++  var y = ar + br
++  if(y) {
++    return [y, x]
++  }
++  return [x]
++}
++
++function robustSubtract(e, f) {
++  var ne = e.length|0
++  var nf = f.length|0
++  if(ne === 1 && nf === 1) {
++    return scalarScalar(e[0], -f[0])
++  }
++  var n = ne + nf
++  var g = new Array(n)
++  var count = 0
++  var eptr = 0
++  var fptr = 0
++  var abs = Math.abs
++  var ei = e[eptr]
++  var ea = abs(ei)
++  var fi = -f[fptr]
++  var fa = abs(fi)
++  var a, b
++  if(ea < fa) {
++    b = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    b = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
++      fa = abs(fi)
++    }
++  }
++  if((eptr < ne && ea < fa) || (fptr >= nf)) {
++    a = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    a = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
++      fa = abs(fi)
++    }
++  }
++  var x = a + b
++  var bv = x - a
++  var y = b - bv
++  var q0 = y
++  var q1 = x
++  var _x, _bv, _av, _br, _ar
++  while(eptr < ne && fptr < nf) {
++    if(ea < fa) {
++      a = ei
++      eptr += 1
++      if(eptr < ne) {
++        ei = e[eptr]
++        ea = abs(ei)
+       }
+-    } else if('button' in ev) {
+-      var b = ev.button
+-      if(b === 1) {
+-        return 4
+-      } else if(b === 2) {
+-        return 2
+-      } else if(b >= 0) {
+-        return 1<<b
++    } else {
++      a = fi
++      fptr += 1
++      if(fptr < nf) {
++        fi = -f[fptr]
++        fa = abs(fi)
+       }
+     }
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
+   }
+-  return 0
+-}
+-exports.buttons = mouseButtons
+-
+-function mouseElement(ev) {
+-  return ev.target || ev.srcElement || window
+-}
+-exports.element = mouseElement
+-
+-function mouseRelativeX(ev) {
+-  if(typeof ev === 'object') {
+-    if('offsetX' in ev) {
+-      return ev.offsetX
++  while(eptr < ne) {
++    a = ei
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++    }
++  }
++  while(fptr < nf) {
++    a = fi
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    } 
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    fptr += 1
++    if(fptr < nf) {
++      fi = -f[fptr]
+     }
+-    var target = mouseElement(ev)
+-    var bounds = target.getBoundingClientRect()
+-    return ev.clientX - bounds.left
+   }
+-  return 0
+-}
+-exports.x = mouseRelativeX
+-
+-function mouseRelativeY(ev) {
+-  if(typeof ev === 'object') {
+-    if('offsetY' in ev) {
+-      return ev.offsetY
+-    }
+-    var target = mouseElement(ev)
+-    var bounds = target.getBoundingClientRect()
+-    return ev.clientY - bounds.top
++  if(q0) {
++    g[count++] = q0
+   }
+-  return 0
++  if(q1) {
++    g[count++] = q1
++  }
++  if(!count) {
++    g[count++] = 0.0  
++  }
++  g.length = count
++  return g
+ }
+-exports.y = mouseRelativeY
+-
+ },{}],423:[function(require,module,exports){
+-module.exports = function parseUnit(str, out) {
+-    if (!out)
+-        out = [ 0, '' ]
+-
+-    str = String(str)
+-    var num = parseFloat(str, 10)
+-    out[0] = num
+-    out[1] = str.match(/[\d.\-\+]*\s*(.*)/)[1] || ''
+-    return out
+-}
+-},{}],424:[function(require,module,exports){
+-'use strict'
+-
+-var parseUnit = require('parse-unit')
+-
+-module.exports = toPX
+-
+-var PIXELS_PER_INCH = 96
++"use strict"
+ 
+-function getPropertyInPX(element, prop) {
+-  var parts = parseUnit(getComputedStyle(element).getPropertyValue(prop))
+-  return parts[0] * toPX(parts[1], element)
+-}
++module.exports = linearExpansionSum
+ 
+-//This brutal hack is needed
+-function getSizeBrutal(unit, element) {
+-  var testDIV = document.createElement('div')
+-  testDIV.style['font-size'] = '128' + unit
+-  element.appendChild(testDIV)
+-  var size = getPropertyInPX(testDIV, 'font-size') / 128
+-  element.removeChild(testDIV)
+-  return size
++//Easy case: Add two scalars
++function scalarScalar(a, b) {
++  var x = a + b
++  var bv = x - a
++  var av = x - bv
++  var br = b - bv
++  var ar = a - av
++  var y = ar + br
++  if(y) {
++    return [y, x]
++  }
++  return [x]
+ }
+ 
+-function toPX(str, element) {
+-  element = element || document.body
+-  str = (str || 'px').trim().toLowerCase()
+-  if(element === window || element === document) {
+-    element = document.body 
++function linearExpansionSum(e, f) {
++  var ne = e.length|0
++  var nf = f.length|0
++  if(ne === 1 && nf === 1) {
++    return scalarScalar(e[0], f[0])
+   }
+-  switch(str) {
+-    case '%':  //Ambiguous, not sure if we should use width or height
+-      return element.clientHeight / 100.0
+-    case 'ch':
+-    case 'ex':
+-      return getSizeBrutal(str, element)
+-    case 'em':
+-      return getPropertyInPX(element, 'font-size')
+-    case 'rem':
+-      return getPropertyInPX(document.body, 'font-size')
+-    case 'vw':
+-      return window.innerWidth/100
+-    case 'vh':
+-      return window.innerHeight/100
+-    case 'vmin':
+-      return Math.min(window.innerWidth, window.innerHeight) / 100
+-    case 'vmax':
+-      return Math.max(window.innerWidth, window.innerHeight) / 100
+-    case 'in':
+-      return PIXELS_PER_INCH
+-    case 'cm':
+-      return PIXELS_PER_INCH / 2.54
+-    case 'mm':
+-      return PIXELS_PER_INCH / 25.4
+-    case 'pt':
+-      return PIXELS_PER_INCH / 72
+-    case 'pc':
+-      return PIXELS_PER_INCH / 6
++  var n = ne + nf
++  var g = new Array(n)
++  var count = 0
++  var eptr = 0
++  var fptr = 0
++  var abs = Math.abs
++  var ei = e[eptr]
++  var ea = abs(ei)
++  var fi = f[fptr]
++  var fa = abs(fi)
++  var a, b
++  if(ea < fa) {
++    b = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    b = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++      fa = abs(fi)
++    }
+   }
+-  return 1
+-}
+-},{"parse-unit":423}],425:[function(require,module,exports){
+-'use strict'
+-
+-var toPX = require('to-px')
+-
+-module.exports = mouseWheelListen
+-
+-function mouseWheelListen(element, callback, noScroll) {
+-  if(typeof element === 'function') {
+-    noScroll = !!callback
+-    callback = element
+-    element = window
++  if((eptr < ne && ea < fa) || (fptr >= nf)) {
++    a = ei
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
++      ea = abs(ei)
++    }
++  } else {
++    a = fi
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++      fa = abs(fi)
++    }
+   }
+-  var lineHeight = toPX('ex', element)
+-  var listener = function(ev) {
+-    if(noScroll) {
+-      ev.preventDefault()
++  var x = a + b
++  var bv = x - a
++  var y = b - bv
++  var q0 = y
++  var q1 = x
++  var _x, _bv, _av, _br, _ar
++  while(eptr < ne && fptr < nf) {
++    if(ea < fa) {
++      a = ei
++      eptr += 1
++      if(eptr < ne) {
++        ei = e[eptr]
++        ea = abs(ei)
++      }
++    } else {
++      a = fi
++      fptr += 1
++      if(fptr < nf) {
++        fi = f[fptr]
++        fa = abs(fi)
++      }
+     }
+-    var dx = ev.deltaX || 0
+-    var dy = ev.deltaY || 0
+-    var dz = ev.deltaZ || 0
+-    var mode = ev.deltaMode
+-    var scale = 1
+-    switch(mode) {
+-      case 1:
+-        scale = lineHeight
+-      break
+-      case 2:
+-        scale = window.innerHeight
+-      break
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
+     }
+-    dx *= scale
+-    dy *= scale
+-    dz *= scale
+-    if(dx || dy || dz) {
+-      return callback(dx, dy, dz)
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++  }
++  while(eptr < ne) {
++    a = ei
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    }
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    eptr += 1
++    if(eptr < ne) {
++      ei = e[eptr]
+     }
+   }
+-  element.addEventListener('wheel', listener)
+-  return listener
+-}
+-
+-},{"to-px":424}],426:[function(require,module,exports){
+-"use strict"
+-
+-
+-
+-var fill = require('cwise/lib/wrapper')({"args":["index","array","scalar"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{_inline_1_arg1_=_inline_1_arg2_.apply(void 0,_inline_1_arg0_)}","args":[{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_1_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_1_arg2_","lvalue":false,"rvalue":true,"count":1}],"thisVars":[],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})
+-
+-module.exports = function(array, f) {
+-  fill(array, f)
+-  return array
+-}
+-
+-},{"cwise/lib/wrapper":118}],427:[function(require,module,exports){
+-'use strict'
+-
+-module.exports = invert
+-
+-var invert2 = require('gl-mat2/invert')
+-var invert3 = require('gl-mat3/invert')
+-var invert4 = require('gl-mat4/invert')
+-
+-function invert(out, M) {
+-  switch(M.length) {
+-    case 0:
+-    break
+-    case 1:
+-      out[0] = 1.0 / M[0]
+-    break
+-    case 4:
+-      invert2(out, M)
+-    break
+-    case 9:
+-      invert3(out, M)
+-    break
+-    case 16:
+-      invert4(out, M)
+-    break
+-    default:
+-      throw new Error('currently supports matrices up to 4x4')
+-    break
++  while(fptr < nf) {
++    a = fi
++    b = q0
++    x = a + b
++    bv = x - a
++    y = b - bv
++    if(y) {
++      g[count++] = y
++    } 
++    _x = q1 + x
++    _bv = _x - q1
++    _av = _x - _bv
++    _br = x - _bv
++    _ar = q1 - _av
++    q0 = _ar + _br
++    q1 = _x
++    fptr += 1
++    if(fptr < nf) {
++      fi = f[fptr]
++    }
+   }
+-  return out
++  if(q0) {
++    g[count++] = q0
++  }
++  if(q1) {
++    g[count++] = q1
++  }
++  if(!count) {
++    g[count++] = 0.0  
++  }
++  g.length = count
++  return g
+ }
+-},{"gl-mat2/invert":428,"gl-mat3/invert":136,"gl-mat4/invert":143}],428:[function(require,module,exports){
+-module.exports = invert
++},{}],424:[function(require,module,exports){
++(function (global, factory) {
++    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
++    typeof define === 'function' && define.amd ? define(factory) :
++    (global.ShelfPack = factory());
++}(this, function () {
+ 
+ /**
+- * Inverts a mat2
++ * Create a new ShelfPack bin allocator.
+  *
+- * @alias mat2.invert
+- * @param {mat2} out the receiving matrix
+- * @param {mat2} a the source matrix
+- * @returns {mat2} out
++ * Uses the Shelf Best Height Fit algorithm from
++ * http://clb.demon.fi/files/RectangleBinPack.pdf
++ *
++ * @class  ShelfPack
++ * @param  {number}  [w=64]  Initial width of the sprite
++ * @param  {number}  [h=64]  Initial width of the sprite
++ * @param  {Object}  [options]
++ * @param  {boolean} [options.autoResize=false]  If `true`, the sprite will automatically grow
++ * @example
++ * var sprite = new ShelfPack(64, 64, { autoResize: false });
+  */
+-function invert(out, a) {
+-  var a0 = a[0]
+-  var a1 = a[1]
+-  var a2 = a[2]
+-  var a3 = a[3]
+-  var det = a0 * a3 - a2 * a1
+-
+-  if (!det) return null
+-  det = 1.0 / det
+-
+-  out[0] =  a3 * det
+-  out[1] = -a1 * det
+-  out[2] = -a2 * det
+-  out[3] =  a0 * det
+-
+-  return out
+-}
+-
+-},{}],429:[function(require,module,exports){
+-"use strict"
+-
+-function interp1d(arr, x) {
+-  var ix = Math.floor(x)
+-    , fx = x - ix
+-    , s0 = 0 <= ix   && ix   < arr.shape[0]
+-    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
+-    , w0 = s0 ? +arr.get(ix)   : 0.0
+-    , w1 = s1 ? +arr.get(ix+1) : 0.0
+-  return (1.0-fx)*w0 + fx*w1
+-}
+-
+-function interp2d(arr, x, y) {
+-  var ix = Math.floor(x)
+-    , fx = x - ix
+-    , s0 = 0 <= ix   && ix   < arr.shape[0]
+-    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
+-    , iy = Math.floor(y)
+-    , fy = y - iy
+-    , t0 = 0 <= iy   && iy   < arr.shape[1]
+-    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
+-    , w00 = s0&&t0 ? arr.get(ix  ,iy  ) : 0.0
+-    , w01 = s0&&t1 ? arr.get(ix  ,iy+1) : 0.0
+-    , w10 = s1&&t0 ? arr.get(ix+1,iy  ) : 0.0
+-    , w11 = s1&&t1 ? arr.get(ix+1,iy+1) : 0.0
+-  return (1.0-fy) * ((1.0-fx)*w00 + fx*w10) + fy * ((1.0-fx)*w01 + fx*w11)
+-}
+-
+-function interp3d(arr, x, y, z) {
+-  var ix = Math.floor(x)
+-    , fx = x - ix
+-    , s0 = 0 <= ix   && ix   < arr.shape[0]
+-    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
+-    , iy = Math.floor(y)
+-    , fy = y - iy
+-    , t0 = 0 <= iy   && iy   < arr.shape[1]
+-    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
+-    , iz = Math.floor(z)
+-    , fz = z - iz
+-    , u0 = 0 <= iz   && iz   < arr.shape[2]
+-    , u1 = 0 <= iz+1 && iz+1 < arr.shape[2]
+-    , w000 = s0&&t0&&u0 ? arr.get(ix,iy,iz)       : 0.0
+-    , w010 = s0&&t1&&u0 ? arr.get(ix,iy+1,iz)     : 0.0
+-    , w100 = s1&&t0&&u0 ? arr.get(ix+1,iy,iz)     : 0.0
+-    , w110 = s1&&t1&&u0 ? arr.get(ix+1,iy+1,iz)   : 0.0
+-    , w001 = s0&&t0&&u1 ? arr.get(ix,iy,iz+1)     : 0.0
+-    , w011 = s0&&t1&&u1 ? arr.get(ix,iy+1,iz+1)   : 0.0
+-    , w101 = s1&&t0&&u1 ? arr.get(ix+1,iy,iz+1)   : 0.0
+-    , w111 = s1&&t1&&u1 ? arr.get(ix+1,iy+1,iz+1) : 0.0
+-  return (1.0-fz) * ((1.0-fy) * ((1.0-fx)*w000 + fx*w100) + fy * ((1.0-fx)*w010 + fx*w110)) + fz * ((1.0-fy) * ((1.0-fx)*w001 + fx*w101) + fy * ((1.0-fx)*w011 + fx*w111))
+-}
+-
+-function interpNd(arr) {
+-  var d = arr.shape.length|0
+-    , ix = new Array(d)
+-    , fx = new Array(d)
+-    , s0 = new Array(d)
+-    , s1 = new Array(d)
+-    , i, t
+-  for(i=0; i<d; ++i) {
+-    t = +arguments[i+1]
+-    ix[i] = Math.floor(t)
+-    fx[i] = t - ix[i]
+-    s0[i] = (0 <= ix[i]   && ix[i]   < arr.shape[i])
+-    s1[i] = (0 <= ix[i]+1 && ix[i]+1 < arr.shape[i])
+-  }
+-  var r = 0.0, j, w, idx
+-i_loop:
+-  for(i=0; i<(1<<d); ++i) {
+-    w = 1.0
+-    idx = arr.offset
+-    for(j=0; j<d; ++j) {
+-      if(i & (1<<j)) {
+-        if(!s1[j]) {
+-          continue i_loop
+-        }
+-        w *= fx[j]
+-        idx += arr.stride[j] * (ix[j] + 1)
+-      } else {
+-        if(!s0[j]) {
+-          continue i_loop
+-        }
+-        w *= 1.0 - fx[j]
+-        idx += arr.stride[j] * ix[j]
+-      }
+-    }
+-    r += w * arr.data[idx]
+-  }
+-  return r
+-}
+-
+-function interpolate(arr, x, y, z) {
+-  switch(arr.shape.length) {
+-    case 0:
+-      return 0.0
+-    case 1:
+-      return interp1d(arr, x)
+-    case 2:
+-      return interp2d(arr, x, y)
+-    case 3:
+-      return interp3d(arr, x, y, z)
+-    default:
+-      return interpNd.apply(undefined, arguments)
+-  }
++function ShelfPack(w, h, options) {
++    options = options || {};
++    this.w = w || 64;
++    this.h = h || 64;
++    this.autoResize = !!options.autoResize;
++    this.shelves = [];
++    this.stats = {};
++    this.count = function(h) {
++        this.stats[h] = (this.stats[h] | 0) + 1;
++    };
+ }
+-module.exports = interpolate
+-module.exports.d1 = interp1d
+-module.exports.d2 = interp2d
+-module.exports.d3 = interp3d
+-
+-},{}],430:[function(require,module,exports){
+-'use strict'
+-
+-var interp  = require('ndarray-linear-interpolate')
+-
+-
+-var do_warp = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=new Array(_inline_9_arg4_)}","args":[{"name":"_inline_9_arg0_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_9_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_9_arg2_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_9_arg3_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_9_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_10_arg2_(this_warped,_inline_10_arg0_),_inline_10_arg1_=_inline_10_arg3_.apply(void 0,this_warped)}","args":[{"name":"_inline_10_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_10_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_10_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_10_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_10_arg4_","lvalue":false,"rvalue":false,"count":0}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warpND","blockSize":64})
+ 
+-var do_warp_1 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_13_arg2_(this_warped,_inline_13_arg0_),_inline_13_arg1_=_inline_13_arg3_(_inline_13_arg4_,this_warped[0])}","args":[{"name":"_inline_13_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_13_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_13_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_13_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_13_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp1D","blockSize":64})
+-
+-var do_warp_2 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_16_arg2_(this_warped,_inline_16_arg0_),_inline_16_arg1_=_inline_16_arg3_(_inline_16_arg4_,this_warped[0],this_warped[1])}","args":[{"name":"_inline_16_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_16_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp2D","blockSize":64})
+-
+-var do_warp_3 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_19_arg2_(this_warped,_inline_19_arg0_),_inline_19_arg1_=_inline_19_arg3_(_inline_19_arg4_,this_warped[0],this_warped[1],this_warped[2])}","args":[{"name":"_inline_19_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_19_arg1_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_19_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_19_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_19_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp3D","blockSize":64})
++/**
++ * Batch pack multiple bins into the sprite.
++ *
++ * @param   {Array}   bins Array of requested bins - each object should have `width`, `height` (or `w`, `h`) properties
++ * @param   {Object}  [options]
++ * @param   {boolean} [options.inPlace=false] If `true`, the supplied bin objects will be updated inplace with `x` and `y` properties
++ * @returns {Array}   Array of allocated bins - each bin is an object with `x`, `y`, `w`, `h` properties
++ * @example
++ * var bins = [
++ *     { id: 'a', width: 12, height: 12 },
++ *     { id: 'b', width: 12, height: 16 },
++ *     { id: 'c', width: 12, height: 24 }
++ * ];
++ * var results = sprite.pack(bins, { inPlace: false });
++ */
++ShelfPack.prototype.pack = function(bins, options) {
++    bins = [].concat(bins);
++    options = options || {};
+ 
+-module.exports = function warp(dest, src, func) {
+-  switch(src.shape.length) {
+-    case 1:
+-      do_warp_1(dest, func, interp.d1, src)
+-      break
+-    case 2:
+-      do_warp_2(dest, func, interp.d2, src)
+-      break
+-    case 3:
+-      do_warp_3(dest, func, interp.d3, src)
+-      break
+-    default:
+-      do_warp(dest, func, interp.bind(undefined, src), src.shape.length)
+-      break
+-  }
+-  return dest
+-}
++    var results = [],
++        w, h, allocation;
+ 
+-},{"cwise/lib/wrapper":118,"ndarray-linear-interpolate":429}],431:[function(require,module,exports){
+-'use strict'
++    for (var i = 0; i < bins.length; i++) {
++        w = bins[i].w || bins[i].width;
++        h = bins[i].h || bins[i].height;
++        if (w && h) {
++            allocation = this.packOne(w, h);
++            if (!allocation) {
++                continue;
++            }
++            if (options.inPlace) {
++                bins[i].x = allocation.x;
++                bins[i].y = allocation.y;
++            }
++            results.push(allocation);
++        }
++    }
+ 
+-var warp = require('ndarray-warp')
+-var invert = require('gl-matrix-invert')
++    // Shrink the width/height of the sprite to the bare minimum.
++    // Since shelf-pack doubles first width, then height when running out of shelf space
++    // this can result in fairly large unused space both in width and height if that happens
++    // towards the end of bin packing.
++    if (this.shelves.length > 0) {
++        var w2 = 0;
++        var h2 = 0;
+ 
+-module.exports = applyHomography
++        for (var j = 0; j < this.shelves.length; j++) {
++            var shelf = this.shelves[j];
++            h2 += shelf.h;
++            w2 = Math.max(shelf.w - shelf.free, w2);
++        }
+ 
+-function applyHomography(dest, src, Xi) {
+-  var n = src.dimension
+-  var X = invert([], Xi)
+-  warp(dest, src, function(out_c, inp_c) {
+-    for(var i=0; i<n; ++i) {
+-      out_c[i] = X[(n+1)*n + i]
+-      for(var j=0; j<n; ++j) {
+-        out_c[i] += X[(n+1)*j+i] * inp_c[j]
+-      }
+-    }
+-    var w = X[(n+1)*(n+1)-1]
+-    for(var j=0; j<n; ++j) {
+-      w += X[(n+1)*j+n] * inp_c[j]
+-    }
+-    var wr = 1.0 / w
+-    for(var i=0; i<n; ++i) {
+-      out_c[i] *= wr
++        this.resize(w2, h2);
+     }
+-    return out_c
+-  })
+-  return dest
+-}
+-},{"gl-matrix-invert":427,"ndarray-warp":430}],432:[function(require,module,exports){
+-"use strict"
+ 
+-var compile = require("cwise-compiler")
++    return results;
++};
+ 
+-var EmptyProc = {
+-  body: "",
+-  args: [],
+-  thisVars: [],
+-  localVars: []
+-}
++/**
++ * Pack a single bin into the sprite.
++ *
++ * @param   {number}  w   Width of the bin to allocate
++ * @param   {number}  h   Height of the bin to allocate
++ * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
++ * @example
++ * var results = sprite.packOne(12, 16);
++ */
++ShelfPack.prototype.packOne = function(w, h) {
++    var y = 0,
++        best = { shelf: -1, waste: Infinity },
++        shelf, waste;
+ 
+-function fixup(x) {
+-  if(!x) {
+-    return EmptyProc
+-  }
+-  for(var i=0; i<x.args.length; ++i) {
+-    var a = x.args[i]
+-    if(i === 0) {
+-      x.args[i] = {name: a, lvalue:true, rvalue: !!x.rvalue, count:x.count||1 }
+-    } else {
+-      x.args[i] = {name: a, lvalue:false, rvalue:true, count: 1}
++    // find the best shelf
++    for (var i = 0; i < this.shelves.length; i++) {
++        shelf = this.shelves[i];
++        y += shelf.h;
++
++        // exactly the right height with width to spare, pack it..
++        if (h === shelf.h && w <= shelf.free) {
++            this.count(h);
++            return shelf.alloc(w, h);
++        }
++        // not enough height or width, skip it..
++        if (h > shelf.h || w > shelf.free) {
++            continue;
++        }
++        // maybe enough height or width, minimize waste..
++        if (h < shelf.h && w <= shelf.free) {
++            waste = shelf.h - h;
++            if (waste < best.waste) {
++                best.waste = waste;
++                best.shelf = i;
++            }
++        }
+     }
+-  }
+-  if(!x.thisVars) {
+-    x.thisVars = []
+-  }
+-  if(!x.localVars) {
+-    x.localVars = []
+-  }
+-  return x
+-}
+ 
+-function pcompile(user_args) {
+-  return compile({
+-    args:     user_args.args,
+-    pre:      fixup(user_args.pre),
+-    body:     fixup(user_args.body),
+-    post:     fixup(user_args.proc),
+-    funcName: user_args.funcName
+-  })
+-}
++    if (best.shelf !== -1) {
++        shelf = this.shelves[best.shelf];
++        this.count(h);
++        return shelf.alloc(w, h);
++    }
+ 
+-function makeOp(user_args) {
+-  var args = []
+-  for(var i=0; i<user_args.args.length; ++i) {
+-    args.push("a"+i)
+-  }
+-  var wrapper = new Function("P", [
+-    "return function ", user_args.funcName, "_ndarrayops(", args.join(","), ") {P(", args.join(","), ");return a0}"
+-  ].join(""))
+-  return wrapper(pcompile(user_args))
+-}
++    // add shelf..
++    if (h <= (this.h - y) && w <= this.w) {
++        shelf = new Shelf(y, this.w, h);
++        this.shelves.push(shelf);
++        this.count(h);
++        return shelf.alloc(w, h);
++    }
+ 
+-var assign_ops = {
+-  add:  "+",
+-  sub:  "-",
+-  mul:  "*",
+-  div:  "/",
+-  mod:  "%",
+-  band: "&",
+-  bor:  "|",
+-  bxor: "^",
+-  lshift: "<<",
+-  rshift: ">>",
+-  rrshift: ">>>"
+-}
+-;(function(){
+-  for(var id in assign_ops) {
+-    var op = assign_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array","array","array"],
+-      body: {args:["a","b","c"],
+-             body: "a=b"+op+"c"},
+-      funcName: id
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array","array"],
+-      body: {args:["a","b"],
+-             body:"a"+op+"=b"},
+-      rvalue: true,
+-      funcName: id+"eq"
+-    })
+-    exports[id+"s"] = makeOp({
+-      args: ["array", "array", "scalar"],
+-      body: {args:["a","b","s"],
+-             body:"a=b"+op+"s"},
+-      funcName: id+"s"
+-    })
+-    exports[id+"seq"] = makeOp({
+-      args: ["array","scalar"],
+-      body: {args:["a","s"],
+-             body:"a"+op+"=s"},
+-      rvalue: true,
+-      funcName: id+"seq"
+-    })
+-  }
+-})();
++    // no more space..
++    // If `autoResize` option is set, grow the sprite as follows:
++    //  * double whichever sprite dimension is smaller (`w1` or `h1`)
++    //  * if sprite dimensions are equal, grow width before height
++    //  * accomodate very large bin requests (big `w` or `h`)
++    if (this.autoResize) {
++        var h1, h2, w1, w2;
+ 
+-var unary_ops = {
+-  not: "!",
+-  bnot: "~",
+-  neg: "-",
+-  recip: "1.0/"
+-}
+-;(function(){
+-  for(var id in unary_ops) {
+-    var op = unary_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array", "array"],
+-      body: {args:["a","b"],
+-             body:"a="+op+"b"},
+-      funcName: id
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array"],
+-      body: {args:["a"],
+-             body:"a="+op+"a"},
+-      rvalue: true,
+-      count: 2,
+-      funcName: id+"eq"
+-    })
+-  }
+-})();
++        h1 = h2 = this.h;
++        w1 = w2 = this.w;
+ 
+-var binary_ops = {
+-  and: "&&",
+-  or: "||",
+-  eq: "===",
+-  neq: "!==",
+-  lt: "<",
+-  gt: ">",
+-  leq: "<=",
+-  geq: ">="
+-}
+-;(function() {
+-  for(var id in binary_ops) {
+-    var op = binary_ops[id]
+-    exports[id] = makeOp({
+-      args: ["array","array","array"],
+-      body: {args:["a", "b", "c"],
+-             body:"a=b"+op+"c"},
+-      funcName: id
+-    })
+-    exports[id+"s"] = makeOp({
+-      args: ["array","array","scalar"],
+-      body: {args:["a", "b", "s"],
+-             body:"a=b"+op+"s"},
+-      funcName: id+"s"
+-    })
+-    exports[id+"eq"] = makeOp({
+-      args: ["array", "array"],
+-      body: {args:["a", "b"],
+-             body:"a=a"+op+"b"},
+-      rvalue:true,
+-      count:2,
+-      funcName: id+"eq"
+-    })
+-    exports[id+"seq"] = makeOp({
+-      args: ["array", "scalar"],
+-      body: {args:["a","s"],
+-             body:"a=a"+op+"s"},
+-      rvalue:true,
+-      count:2,
+-      funcName: id+"seq"
+-    })
+-  }
+-})();
++        if (w1 <= h1 || w > w1) {   // grow width..
++            w2 = Math.max(w, w1) * 2;
++        }
++        if (h1 < w1 || h > h1) {    // grow height..
++            h2 = Math.max(h, h1) * 2;
++        }
+ 
+-var math_unary = [
+-  "abs",
+-  "acos",
+-  "asin",
+-  "atan",
+-  "ceil",
+-  "cos",
+-  "exp",
+-  "floor",
+-  "log",
+-  "round",
+-  "sin",
+-  "sqrt",
+-  "tan"
+-]
+-;(function() {
+-  for(var i=0; i<math_unary.length; ++i) {
+-    var f = math_unary[i]
+-    exports[f] = makeOp({
+-                    args: ["array", "array"],
+-                    pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                    body: {args:["a","b"], body:"a=this_f(b)", thisVars:["this_f"]},
+-                    funcName: f
+-                  })
+-    exports[f+"eq"] = makeOp({
+-                      args: ["array"],
+-                      pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                      body: {args: ["a"], body:"a=this_f(a)", thisVars:["this_f"]},
+-                      rvalue: true,
+-                      count: 2,
+-                      funcName: f+"eq"
+-                    })
+-  }
+-})();
++        this.resize(w2, h2);
++        return this.packOne(w, h);  // retry
++    }
+ 
+-var math_comm = [
+-  "max",
+-  "min",
+-  "atan2",
+-  "pow"
+-]
+-;(function(){
+-  for(var i=0; i<math_comm.length; ++i) {
+-    var f= math_comm[i]
+-    exports[f] = makeOp({
+-                  args:["array", "array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
+-                  funcName: f
+-                })
+-    exports[f+"s"] = makeOp({
+-                  args:["array", "array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
+-                  funcName: f+"s"
+-                  })
+-    exports[f+"eq"] = makeOp({ args:["array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
+-                  rvalue: true,
+-                  count: 2,
+-                  funcName: f+"eq"
+-                  })
+-    exports[f+"seq"] = makeOp({ args:["array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
+-                  rvalue:true,
+-                  count:2,
+-                  funcName: f+"seq"
+-                  })
+-  }
+-})();
++    return null;
++};
+ 
+-var math_noncomm = [
+-  "atan2",
+-  "pow"
+-]
+-;(function(){
+-  for(var i=0; i<math_noncomm.length; ++i) {
+-    var f= math_noncomm[i]
+-    exports[f+"op"] = makeOp({
+-                  args:["array", "array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
+-                  funcName: f+"op"
+-                })
+-    exports[f+"ops"] = makeOp({
+-                  args:["array", "array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
+-                  funcName: f+"ops"
+-                  })
+-    exports[f+"opeq"] = makeOp({ args:["array", "array"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
+-                  rvalue: true,
+-                  count: 2,
+-                  funcName: f+"opeq"
+-                  })
+-    exports[f+"opseq"] = makeOp({ args:["array", "scalar"],
+-                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
+-                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
+-                  rvalue:true,
+-                  count:2,
+-                  funcName: f+"opseq"
+-                  })
+-  }
+-})();
++/**
++ * Clear the sprite.
++ *
++ * @example
++ * sprite.clear();
++ */
++ShelfPack.prototype.clear = function() {
++    this.shelves = [];
++    this.stats = {};
++};
+ 
+-exports.any = compile({
+-  args:["array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "if(a){return true}", localVars: [], thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return false"},
+-  funcName: "any"
+-})
++/**
++ * Resize the sprite.
++ *
++ * @param   {number}  w  Requested new sprite width
++ * @param   {number}  h  Requested new sprite height
++ * @returns {boolean} `true` if resize succeeded, `false` if failed
++ * @example
++ * sprite.resize(256, 256);
++ */
++ShelfPack.prototype.resize = function(w, h) {
++    this.w = w;
++    this.h = h;
++    for (var i = 0; i < this.shelves.length; i++) {
++        this.shelves[i].resize(w);
++    }
++    return true;
++};
+ 
+-exports.all = compile({
+-  args:["array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1}], body: "if(!x){return false}", localVars: [], thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return true"},
+-  funcName: "all"
+-})
+ 
+-exports.sum = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s+=a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "sum"
+-})
+ 
+-exports.prod = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=1"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s*=a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "prod"
+-})
++/**
++ * Create a new Shelf.
++ *
++ * @private
++ * @class  Shelf
++ * @param  {number}  y   Top coordinate of the new shelf
++ * @param  {number}  w   Width of the new shelf
++ * @param  {number}  h   Height of the new shelf
++ * @example
++ * var shelf = new Shelf(64, 512, 24);
++ */
++function Shelf(y, w, h) {
++    this.x = 0;
++    this.y = y;
++    this.w = this.free = w;
++    this.h = h;
++}
+ 
+-exports.norm2squared = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norm2squared"
+-})
+-  
+-exports.norm2 = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return Math.sqrt(this_s)"},
+-  funcName: "norm2"
+-})
+-  
++/**
++ * Allocate a single bin into the shelf.
++ *
++ * @private
++ * @param   {number}  w   Width of the bin to allocate
++ * @param   {number}  h   Height of the bin to allocate
++ * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
++ * @example
++ * shelf.alloc(12, 16);
++ */
++Shelf.prototype.alloc = function(w, h) {
++    if (w > this.free || h > this.h) {
++        return null;
++    }
++    var x = this.x;
++    this.x += w;
++    this.free -= w;
++    return { x: x, y: this.y, w: w, h: h, width: w, height: h };
++};
+ 
+-exports.norminf = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:4}], body:"if(-a>this_s){this_s=-a}else if(a>this_s){this_s=a}", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norminf"
+-})
++/**
++ * Resize the shelf.
++ *
++ * @private
++ * @param   {number}  w  Requested new width of the shelf
++ * @returns {boolean} true if resize succeeded, false if failed
++ * @example
++ * shelf.resize(512);
++ */
++Shelf.prototype.resize = function(w) {
++    this.free += (w - this.w);
++    this.w = w;
++    return true;
++};
+ 
+-exports.norm1 = compile({
+-  args:["array"],
+-  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
+-  body: {args:[{name:"a", lvalue:false, rvalue:true, count:3}], body: "this_s+=a<0?-a:a", localVars: [], thisVars: ["this_s"]},
+-  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
+-  funcName: "norm1"
+-})
++return ShelfPack;
+ 
+-exports.sup = compile({
+-  args: [ "array" ],
+-  pre:
+-   { body: "this_h=-Infinity",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  body:
+-   { body: "if(_inline_1_arg0_>this_h)this_h=_inline_1_arg0_",
+-     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  post:
+-   { body: "return this_h",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] }
+- })
++}));
++},{}],425:[function(require,module,exports){
++"use strict"
+ 
+-exports.inf = compile({
+-  args: [ "array" ],
+-  pre:
+-   { body: "this_h=Infinity",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  body:
+-   { body: "if(_inline_1_arg0_<this_h)this_h=_inline_1_arg0_",
+-     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
+-     thisVars: [ "this_h" ],
+-     localVars: [] },
+-  post:
+-   { body: "return this_h",
+-     args: [],
+-     thisVars: [ "this_h" ],
+-     localVars: [] }
+- })
++module.exports = function signum(x) {
++  if(x < 0) { return -1 }
++  if(x > 0) { return 1 }
++  return 0.0
++}
++},{}],426:[function(require,module,exports){
++'use strict'
+ 
+-exports.argmin = compile({
+-  args:["index","array","shape"],
+-  pre:{
+-    body:"{this_v=Infinity;this_i=_inline_0_arg2_.slice(0)}",
+-    args:[
+-      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
+-      ],
+-    thisVars:["this_i","this_v"],
+-    localVars:[]},
+-  body:{
+-    body:"{if(_inline_1_arg1_<this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
+-    args:[
+-      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
+-      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
+-    thisVars:["this_i","this_v"],
+-    localVars:["_inline_1_k"]},
+-  post:{
+-    body:"{return this_i}",
+-    args:[],
+-    thisVars:["this_i"],
+-    localVars:[]}
+-})
++module.exports = boundary
+ 
+-exports.argmax = compile({
+-  args:["index","array","shape"],
+-  pre:{
+-    body:"{this_v=-Infinity;this_i=_inline_0_arg2_.slice(0)}",
+-    args:[
+-      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
+-      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
+-      ],
+-    thisVars:["this_i","this_v"],
+-    localVars:[]},
+-  body:{
+-    body:"{if(_inline_1_arg1_>this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
+-    args:[
+-      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
+-      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
+-    thisVars:["this_i","this_v"],
+-    localVars:["_inline_1_k"]},
+-  post:{
+-    body:"{return this_i}",
+-    args:[],
+-    thisVars:["this_i"],
+-    localVars:[]}
+-})  
++var bnd = require('boundary-cells')
++var reduce = require('reduce-simplicial-complex')
+ 
+-exports.random = makeOp({
+-  args: ["array"],
+-  pre: {args:[], body:"this_f=Math.random", thisVars:["this_f"]},
+-  body: {args: ["a"], body:"a=this_f()", thisVars:["this_f"]},
+-  funcName: "random"
+-})
++function boundary(cells) {
++  return reduce(bnd(cells))
++}
+ 
+-exports.assign = makeOp({
+-  args:["array", "array"],
+-  body: {args:["a", "b"], body:"a=b"},
+-  funcName: "assign" })
++},{"boundary-cells":51,"reduce-simplicial-complex":409}],427:[function(require,module,exports){
++'use strict'
+ 
+-exports.assigns = makeOp({
+-  args:["array", "scalar"],
+-  body: {args:["a", "b"], body:"a=b"},
+-  funcName: "assigns" })
++module.exports = extractContour
+ 
++var ndarray = require('ndarray')
++var pool    = require('typedarray-pool')
++var ndsort  = require('ndarray-sort')
+ 
+-exports.equals = compile({
+-  args:["array", "array"],
+-  pre: EmptyProc,
+-  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1},
+-               {name:"y", lvalue:false, rvalue:true, count:1}], 
+-        body: "if(x!==y){return false}", 
+-        localVars: [], 
+-        thisVars: []},
+-  post: {args:[], localVars:[], thisVars:[], body:"return true"},
+-  funcName: "equals"
+-})
++var contourAlgorithm = require('./lib/codegen')
+ 
++function getDimension(cells) {
++  var numCells = cells.length
++  var d = 0
++  for(var i=0; i<numCells; ++i) {
++    d = Math.max(d, cells[i].length)|0
++  }
++  return d-1
++}
+ 
++function getSigns(values, level) {
++  var numVerts    = values.length
++  var vertexSigns = pool.mallocUint8(numVerts)
++  for(var i=0; i<numVerts; ++i) {
++    vertexSigns[i] = (values[i] < level)|0
++  }
++  return vertexSigns
++}
+ 
+-},{"cwise-compiler":115}],433:[function(require,module,exports){
+-var iota = require("iota-array")
+-var isBuffer = require("is-buffer")
++function getEdges(cells, d) {
++  var numCells = cells.length
++  var maxEdges = ((d * (d+1)/2) * numCells)|0
++  var edges    = pool.mallocUint32(maxEdges*2)
++  var ePtr     = 0
++  for(var i=0; i<numCells; ++i) {
++    var c = cells[i]
++    var d = c.length
++    for(var j=0; j<d; ++j) {
++      for(var k=0; k<j; ++k) {
++        var a = c[k]
++        var b = c[j]
++        edges[ePtr++] = Math.min(a,b)|0
++        edges[ePtr++] = Math.max(a,b)|0
++      }
++    }
++  }
++  var nedges = (ePtr/2)|0
++  ndsort(ndarray(edges, [nedges,2])) 
++  var ptr = 2
++  for(var i=2; i<ePtr; i+=2) {
++    if(edges[i-2] === edges[i] &&
++       edges[i-1] === edges[i+1]) {
++      continue
++    }
++    edges[ptr++] = edges[i]
++    edges[ptr++] = edges[i+1]
++  }
+ 
+-var hasTypedArrays  = ((typeof Float64Array) !== "undefined")
++  return ndarray(edges, [(ptr/2)|0, 2])
++}
+ 
+-function compare1st(a, b) {
+-  return a[0] - b[0]
++function getCrossingWeights(edges, values, signs, level) {
++  var edata     = edges.data
++  var numEdges  = edges.shape[0]
++  var weights   = pool.mallocDouble(numEdges)
++  var ptr       = 0
++  for(var i=0; i<numEdges; ++i) {
++    var a  = edata[2*i]
++    var b  = edata[2*i+1]
++    if(signs[a] === signs[b]) {
++      continue
++    }
++    var va = values[a]
++    var vb = values[b]
++    edata[2*ptr]     = a
++    edata[2*ptr+1]   = b
++    weights[ptr++]   = (vb - level) / (vb - va)
++  }
++  edges.shape[0] = ptr
++  return ndarray(weights, [ptr])
+ }
+ 
+-function order() {
+-  var stride = this.stride
+-  var terms = new Array(stride.length)
+-  var i
+-  for(i=0; i<terms.length; ++i) {
+-    terms[i] = [Math.abs(stride[i]), i]
++function getCascade(edges, numVerts) {
++  var result   = pool.mallocInt32(numVerts*2)
++  var numEdges = edges.shape[0]
++  var edata    = edges.data
++  result[0]    = 0
++  var lastV    = 0
++  for(var i=0; i<numEdges; ++i) {
++    var a = edata[2*i]
++    if(a !== lastV) {
++      result[2*lastV+1] = i
++      while(++lastV < a) {
++        result[2*lastV] = i
++        result[2*lastV+1] = i
++      }
++      result[2*lastV] = i
++    }
+   }
+-  terms.sort(compare1st)
+-  var result = new Array(terms.length)
+-  for(i=0; i<result.length; ++i) {
+-    result[i] = terms[i][1]
++  result[2*lastV+1] = numEdges
++  while(++lastV < numVerts) {
++    result[2*lastV] = result[2*lastV+1] = numEdges
+   }
+   return result
+ }
+ 
+-function compileConstructor(dtype, dimension) {
+-  var className = ["View", dimension, "d", dtype].join("")
+-  if(dimension < 0) {
+-    className = "View_Nil" + dtype
++function unpackEdges(edges) {
++  var ne = edges.shape[0]|0
++  var edata = edges.data
++  var result = new Array(ne)
++  for(var i=0; i<ne; ++i) {
++    result[i] = [edata[2*i], edata[2*i+1]]
+   }
+-  var useGetters = (dtype === "generic")
++  return result
++}
+ 
+-  if(dimension === -1) {
+-    //Special case for trivial arrays
+-    var code =
+-      "function "+className+"(a){this.data=a;};\
+-var proto="+className+".prototype;\
+-proto.dtype='"+dtype+"';\
+-proto.index=function(){return -1};\
+-proto.size=0;\
+-proto.dimension=-1;\
+-proto.shape=proto.stride=proto.order=[];\
+-proto.lo=proto.hi=proto.transpose=proto.step=\
+-function(){return new "+className+"(this.data);};\
+-proto.get=proto.set=function(){};\
+-proto.pick=function(){return null};\
+-return function construct_"+className+"(a){return new "+className+"(a);}"
+-    var procedure = new Function(code)
+-    return procedure()
+-  } else if(dimension === 0) {
+-    //Special case for 0d arrays
+-    var code =
+-      "function "+className+"(a,d) {\
+-this.data = a;\
+-this.offset = d\
+-};\
+-var proto="+className+".prototype;\
+-proto.dtype='"+dtype+"';\
+-proto.index=function(){return this.offset};\
+-proto.dimension=0;\
+-proto.size=1;\
+-proto.shape=\
+-proto.stride=\
+-proto.order=[];\
+-proto.lo=\
+-proto.hi=\
+-proto.transpose=\
+-proto.step=function "+className+"_copy() {\
+-return new "+className+"(this.data,this.offset)\
+-};\
+-proto.pick=function "+className+"_pick(){\
+-return TrivialArray(this.data);\
+-};\
+-proto.valueOf=proto.get=function "+className+"_get(){\
+-return "+(useGetters ? "this.data.get(this.offset)" : "this.data[this.offset]")+
+-"};\
+-proto.set=function "+className+"_set(v){\
+-return "+(useGetters ? "this.data.set(this.offset,v)" : "this.data[this.offset]=v")+"\
+-};\
+-return function construct_"+className+"(a,b,c,d){return new "+className+"(a,d)}"
+-    var procedure = new Function("TrivialArray", code)
+-    return procedure(CACHED_CONSTRUCTORS[dtype][0])
++function extractContour(cells, values, level, d) {
++  level = level||0.0
++
++  //If user didn't specify `d`, use brute force scan
++  if(typeof d === 'undefined') {
++    d = getDimension(cells)
+   }
+ 
+-  var code = ["'use strict'"]
++  //Count number of cells
++  var numCells = cells.length
++  if(numCells === 0 || d < 1) {
++    return {
++      cells:         [],
++      vertexIds:     [],
++      vertexWeights: []
++    }
++  }
+ 
+-  //Create constructor for view
+-  var indices = iota(dimension)
+-  var args = indices.map(function(i) { return "i"+i })
+-  var index_str = "this.offset+" + indices.map(function(i) {
+-        return "this.stride[" + i + "]*i" + i
+-      }).join("+")
+-  var shapeArg = indices.map(function(i) {
+-      return "b"+i
+-    }).join(",")
+-  var strideArg = indices.map(function(i) {
+-      return "c"+i
+-    }).join(",")
+-  code.push(
+-    "function "+className+"(a," + shapeArg + "," + strideArg + ",d){this.data=a",
+-      "this.shape=[" + shapeArg + "]",
+-      "this.stride=[" + strideArg + "]",
+-      "this.offset=d|0}",
+-    "var proto="+className+".prototype",
+-    "proto.dtype='"+dtype+"'",
+-    "proto.dimension="+dimension)
++  //Read in vertex signs
++  var vertexSigns = getSigns(values, +level)
+ 
+-  //view.size:
+-  code.push("Object.defineProperty(proto,'size',{get:function "+className+"_size(){\
+-return "+indices.map(function(i) { return "this.shape["+i+"]" }).join("*"),
+-"}})")
++  //First get 1-skeleton, find all crossings
++  var edges   = getEdges(cells, d)
++  var weights = getCrossingWeights(edges, values, vertexSigns, +level)
+ 
+-  //view.order:
+-  if(dimension === 1) {
+-    code.push("proto.order=[0]")
+-  } else {
+-    code.push("Object.defineProperty(proto,'order',{get:")
+-    if(dimension < 4) {
+-      code.push("function "+className+"_order(){")
+-      if(dimension === 2) {
+-        code.push("return (Math.abs(this.stride[0])>Math.abs(this.stride[1]))?[1,0]:[0,1]}})")
+-      } else if(dimension === 3) {
+-        code.push(
+-"var s0=Math.abs(this.stride[0]),s1=Math.abs(this.stride[1]),s2=Math.abs(this.stride[2]);\
+-if(s0>s1){\
+-if(s1>s2){\
+-return [2,1,0];\
+-}else if(s0>s2){\
+-return [1,2,0];\
+-}else{\
+-return [1,0,2];\
+-}\
+-}else if(s0>s2){\
+-return [2,0,1];\
+-}else if(s2>s1){\
+-return [0,1,2];\
+-}else{\
+-return [0,2,1];\
+-}}})")
+-      }
+-    } else {
+-      code.push("ORDER})")
++  //Build vertex cascade to speed up binary search
++  var vcascade = getCascade(edges, values.length|0)
++
++  //Then construct cells
++  var faces = contourAlgorithm(d)(cells, edges.data, vcascade, vertexSigns)
++
++  //Unpack data into pretty format
++  var uedges   = unpackEdges(edges)
++  var uweights = [].slice.call(weights.data, 0, weights.shape[0])
++
++  //Release data
++  pool.free(vertexSigns)
++  pool.free(edges.data)
++  pool.free(weights.data)
++  pool.free(vcascade)
++  
++  return {
++    cells:         faces,
++    vertexIds:     uedges,
++    vertexWeights: uweights
++  }
++}
++},{"./lib/codegen":428,"ndarray":385,"ndarray-sort":383,"typedarray-pool":449}],428:[function(require,module,exports){
++'use strict'
++
++module.exports = getPolygonizer
++
++var pool = require('typedarray-pool')
++var createMSTable = require('marching-simplex-table')
++
++var CACHE = {}
++
++function createCellPolygonizer(d) {
++  var maxCellSize = 0
++  var tables = new Array(d+1)
++  tables[0] = [ [] ]
++  for(var i=1; i<=d; ++i) {
++    var tab = tables[i] = createMSTable(i)
++    for(var j=0; j<tab.length; ++j) {
++      maxCellSize = Math.max(maxCellSize, tab[i].length)
+     }
+   }
+ 
+-  //view.set(i0, ..., v):
+-  code.push(
+-"proto.set=function "+className+"_set("+args.join(",")+",v){")
+-  if(useGetters) {
+-    code.push("return this.data.set("+index_str+",v)}")
+-  } else {
+-    code.push("return this.data["+index_str+"]=v}")
++  var code  = [
++  'function B(C,E,i,j){',
++    'var a=Math.min(i,j)|0,b=Math.max(i,j)|0,l=C[2*a],h=C[2*a+1];',
++    'while(l<h){',
++      'var m=(l+h)>>1,v=E[2*m+1];',
++      'if(v===b){return m}',
++      'if(b<v){h=m}else{l=m+1}',
++    '}',
++    'return l;',
++  '};',
++  'function getContour', d, 'd(F,E,C,S){',
++    'var n=F.length,R=[];',
++    'for(var i=0;i<n;++i){var c=F[i],l=c.length;'
++  ]
++
++  function generateCase(facets) {
++    if(facets.length <= 0) {
++      return
++    }
++    code.push('R.push(')
++    for(var i=0; i<facets.length; ++i) {
++      var facet = facets[i]
++      if(i > 0) {
++        code.push(',')
++      }
++      code.push('[')
++      for(var j=0; j<facet.length; ++j) {
++        var f = facet[j]
++        if(j > 0) {
++          code.push(',')
++        }
++        code.push('B(C,E,c[', f[0], '],c[', f[1], '])')
++      }
++      code.push(']')
++    }
++    code.push(');')
+   }
+ 
+-  //view.get(i0, ...):
+-  code.push("proto.get=function "+className+"_get("+args.join(",")+"){")
+-  if(useGetters) {
+-    code.push("return this.data.get("+index_str+")}")
+-  } else {
+-    code.push("return this.data["+index_str+"]}")
++  for(var i=d+1; i>1; --i) {
++    if(i < d+1) {
++      code.push('else ')
++    }
++    code.push('if(l===', i, '){')
++
++    //Generate mask
++    var maskStr = []
++    for(var j=0; j<i; ++j) {
++      maskStr.push('(S[c['+j+']]<<'+j+')')
++    }
++
++    //Perform table look up
++    code.push('var M=', maskStr.join('+'), 
++      ';if(M===0||M===', (1<<i)-1, 
++        '){continue}switch(M){')
++
++    var tab = tables[i-1]
++    for(var j=0; j<tab.length; ++j) {
++      code.push('case ', j, ':')
++      generateCase(tab[j])
++      code.push('break;')
++    }
++    code.push('}}')
+   }
++  code.push('}return R;};return getContour', d, 'd')
+ 
+-  //view.index:
+-  code.push(
+-    "proto.index=function "+className+"_index(", args.join(), "){return "+index_str+"}")
++  var proc = new Function('pool', code.join(''))
++  return proc(pool)
++}
+ 
+-  //view.hi():
+-  code.push("proto.hi=function "+className+"_hi("+args.join(",")+"){return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return ["(typeof i",i,"!=='number'||i",i,"<0)?this.shape[", i, "]:i", i,"|0"].join("")
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "this.stride["+i + "]"
+-    }).join(",")+",this.offset)}")
++function getPolygonizer(d) {
++  var alg = CACHE[d]
++  if(!alg) {
++    alg = CACHE[d] = createCellPolygonizer(d) 
++  }
++  return alg
++}
++},{"marching-simplex-table":364,"typedarray-pool":449}],429:[function(require,module,exports){
++"use strict"; "use restrict";
+ 
+-  //view.lo():
+-  var a_vars = indices.map(function(i) { return "a"+i+"=this.shape["+i+"]" })
+-  var c_vars = indices.map(function(i) { return "c"+i+"=this.stride["+i+"]" })
+-  code.push("proto.lo=function "+className+"_lo("+args.join(",")+"){var b=this.offset,d=0,"+a_vars.join(",")+","+c_vars.join(","))
+-  for(var i=0; i<dimension; ++i) {
+-    code.push(
+-"if(typeof i"+i+"==='number'&&i"+i+">=0){\
+-d=i"+i+"|0;\
+-b+=c"+i+"*d;\
+-a"+i+"-=d}")
++var bits      = require("bit-twiddle")
++  , UnionFind = require("union-find")
++
++//Returns the dimension of a cell complex
++function dimension(cells) {
++  var d = 0
++    , max = Math.max
++  for(var i=0, il=cells.length; i<il; ++i) {
++    d = max(d, cells[i].length)
+   }
+-  code.push("return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return "a"+i
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "c"+i
+-    }).join(",")+",b)}")
++  return d-1
++}
++exports.dimension = dimension
+ 
+-  //view.step():
+-  code.push("proto.step=function "+className+"_step("+args.join(",")+"){var "+
+-    indices.map(function(i) {
+-      return "a"+i+"=this.shape["+i+"]"
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "b"+i+"=this.stride["+i+"]"
+-    }).join(",")+",c=this.offset,d=0,ceil=Math.ceil")
+-  for(var i=0; i<dimension; ++i) {
+-    code.push(
+-"if(typeof i"+i+"==='number'){\
+-d=i"+i+"|0;\
+-if(d<0){\
+-c+=b"+i+"*(a"+i+"-1);\
+-a"+i+"=ceil(-a"+i+"/d)\
+-}else{\
+-a"+i+"=ceil(a"+i+"/d)\
+-}\
+-b"+i+"*=d\
+-}")
++//Counts the number of vertices in faces
++function countVertices(cells) {
++  var vc = -1
++    , max = Math.max
++  for(var i=0, il=cells.length; i<il; ++i) {
++    var c = cells[i]
++    for(var j=0, jl=c.length; j<jl; ++j) {
++      vc = max(vc, c[j])
++    }
+   }
+-  code.push("return new "+className+"(this.data,"+
+-    indices.map(function(i) {
+-      return "a" + i
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "b" + i
+-    }).join(",")+",c)}")
++  return vc+1
++}
++exports.countVertices = countVertices
+ 
+-  //view.transpose():
+-  var tShape = new Array(dimension)
+-  var tStride = new Array(dimension)
+-  for(var i=0; i<dimension; ++i) {
+-    tShape[i] = "a[i"+i+"]"
+-    tStride[i] = "b[i"+i+"]"
++//Returns a deep copy of cells
++function cloneCells(cells) {
++  var ncells = new Array(cells.length)
++  for(var i=0, il=cells.length; i<il; ++i) {
++    ncells[i] = cells[i].slice(0)
+   }
+-  code.push("proto.transpose=function "+className+"_transpose("+args+"){"+
+-    args.map(function(n,idx) { return n + "=(" + n + "===undefined?" + idx + ":" + n + "|0)"}).join(";"),
+-    "var a=this.shape,b=this.stride;return new "+className+"(this.data,"+tShape.join(",")+","+tStride.join(",")+",this.offset)}")
++  return ncells
++}
++exports.cloneCells = cloneCells
+ 
+-  //view.pick():
+-  code.push("proto.pick=function "+className+"_pick("+args+"){var a=[],b=[],c=this.offset")
+-  for(var i=0; i<dimension; ++i) {
+-    code.push("if(typeof i"+i+"==='number'&&i"+i+">=0){c=(c+this.stride["+i+"]*i"+i+")|0}else{a.push(this.shape["+i+"]);b.push(this.stride["+i+"])}")
++//Ranks a pair of cells up to permutation
++function compareCells(a, b) {
++  var n = a.length
++    , t = a.length - b.length
++    , min = Math.min
++  if(t) {
++    return t
+   }
+-  code.push("var ctor=CTOR_LIST[a.length+1];return ctor(this.data,a,b,c)}")
++  switch(n) {
++    case 0:
++      return 0;
++    case 1:
++      return a[0] - b[0];
++    case 2:
++      var d = a[0]+a[1]-b[0]-b[1]
++      if(d) {
++        return d
++      }
++      return min(a[0],a[1]) - min(b[0],b[1])
++    case 3:
++      var l1 = a[0]+a[1]
++        , m1 = b[0]+b[1]
++      d = l1+a[2] - (m1+b[2])
++      if(d) {
++        return d
++      }
++      var l0 = min(a[0], a[1])
++        , m0 = min(b[0], b[1])
++        , d  = min(l0, a[2]) - min(m0, b[2])
++      if(d) {
++        return d
++      }
++      return min(l0+a[2], l1) - min(m0+b[2], m1)
++    
++    //TODO: Maybe optimize n=4 as well?
++    
++    default:
++      var as = a.slice(0)
++      as.sort()
++      var bs = b.slice(0)
++      bs.sort()
++      for(var i=0; i<n; ++i) {
++        t = as[i] - bs[i]
++        if(t) {
++          return t
++        }
++      }
++      return 0
++  }
++}
++exports.compareCells = compareCells
+ 
+-  //Add return statement
+-  code.push("return function construct_"+className+"(data,shape,stride,offset){return new "+className+"(data,"+
+-    indices.map(function(i) {
+-      return "shape["+i+"]"
+-    }).join(",")+","+
+-    indices.map(function(i) {
+-      return "stride["+i+"]"
+-    }).join(",")+",offset)}")
++function compareZipped(a, b) {
++  return compareCells(a[0], b[0])
++}
+ 
+-  //Compile procedure
+-  var procedure = new Function("CTOR_LIST", "ORDER", code.join("\n"))
+-  return procedure(CACHED_CONSTRUCTORS[dtype], order)
++//Puts a cell complex into normal order for the purposes of findCell queries
++function normalize(cells, attr) {
++  if(attr) {
++    var len = cells.length
++    var zipped = new Array(len)
++    for(var i=0; i<len; ++i) {
++      zipped[i] = [cells[i], attr[i]]
++    }
++    zipped.sort(compareZipped)
++    for(var i=0; i<len; ++i) {
++      cells[i] = zipped[i][0]
++      attr[i] = zipped[i][1]
++    }
++    return cells
++  } else {
++    cells.sort(compareCells)
++    return cells
++  }
+ }
++exports.normalize = normalize
+ 
+-function arrayDType(data) {
+-  if(isBuffer(data)) {
+-    return "buffer"
++//Removes all duplicate cells in the complex
++function unique(cells) {
++  if(cells.length === 0) {
++    return []
+   }
+-  if(hasTypedArrays) {
+-    switch(Object.prototype.toString.call(data)) {
+-      case "[object Float64Array]":
+-        return "float64"
+-      case "[object Float32Array]":
+-        return "float32"
+-      case "[object Int8Array]":
+-        return "int8"
+-      case "[object Int16Array]":
+-        return "int16"
+-      case "[object Int32Array]":
+-        return "int32"
+-      case "[object Uint8Array]":
+-        return "uint8"
+-      case "[object Uint16Array]":
+-        return "uint16"
+-      case "[object Uint32Array]":
+-        return "uint32"
+-      case "[object Uint8ClampedArray]":
+-        return "uint8_clamped"
++  var ptr = 1
++    , len = cells.length
++  for(var i=1; i<len; ++i) {
++    var a = cells[i]
++    if(compareCells(a, cells[i-1])) {
++      if(i === ptr) {
++        ptr++
++        continue
++      }
++      cells[ptr++] = a
+     }
+   }
+-  if(Array.isArray(data)) {
+-    return "array"
+-  }
+-  return "generic"
++  cells.length = ptr
++  return cells
+ }
++exports.unique = unique;
+ 
+-var CACHED_CONSTRUCTORS = {
+-  "float32":[],
+-  "float64":[],
+-  "int8":[],
+-  "int16":[],
+-  "int32":[],
+-  "uint8":[],
+-  "uint16":[],
+-  "uint32":[],
+-  "array":[],
+-  "uint8_clamped":[],
+-  "buffer":[],
+-  "generic":[]
++//Finds a cell in a normalized cell complex
++function findCell(cells, c) {
++  var lo = 0
++    , hi = cells.length-1
++    , r  = -1
++  while (lo <= hi) {
++    var mid = (lo + hi) >> 1
++      , s   = compareCells(cells[mid], c)
++    if(s <= 0) {
++      if(s === 0) {
++        r = mid
++      }
++      lo = mid + 1
++    } else if(s > 0) {
++      hi = mid - 1
++    }
++  }
++  return r
+ }
++exports.findCell = findCell;
+ 
+-;(function() {
+-  for(var id in CACHED_CONSTRUCTORS) {
+-    CACHED_CONSTRUCTORS[id].push(compileConstructor(id, -1))
++//Builds an index for an n-cell.  This is more general than dual, but less efficient
++function incidence(from_cells, to_cells) {
++  var index = new Array(from_cells.length)
++  for(var i=0, il=index.length; i<il; ++i) {
++    index[i] = []
+   }
+-});
++  var b = []
++  for(var i=0, n=to_cells.length; i<n; ++i) {
++    var c = to_cells[i]
++    var cl = c.length
++    for(var k=1, kn=(1<<cl); k<kn; ++k) {
++      b.length = bits.popCount(k)
++      var l = 0
++      for(var j=0; j<cl; ++j) {
++        if(k & (1<<j)) {
++          b[l++] = c[j]
++        }
++      }
++      var idx=findCell(from_cells, b)
++      if(idx < 0) {
++        continue
++      }
++      while(true) {
++        index[idx++].push(i)
++        if(idx >= from_cells.length || compareCells(from_cells[idx], b) !== 0) {
++          break
++        }
++      }
++    }
++  }
++  return index
++}
++exports.incidence = incidence
+ 
+-function wrappedNDArrayCtor(data, shape, stride, offset) {
+-  if(data === undefined) {
+-    var ctor = CACHED_CONSTRUCTORS.array[0]
+-    return ctor([])
+-  } else if(typeof data === "number") {
+-    data = [data]
++//Computes the dual of the mesh.  This is basically an optimized version of buildIndex for the situation where from_cells is just the list of vertices
++function dual(cells, vertex_count) {
++  if(!vertex_count) {
++    return incidence(unique(skeleton(cells, 0)), cells, 0)
+   }
+-  if(shape === undefined) {
+-    shape = [ data.length ]
++  var res = new Array(vertex_count)
++  for(var i=0; i<vertex_count; ++i) {
++    res[i] = []
+   }
+-  var d = shape.length
+-  if(stride === undefined) {
+-    stride = new Array(d)
+-    for(var i=d-1, sz=1; i>=0; --i) {
+-      stride[i] = sz
+-      sz *= shape[i]
++  for(var i=0, len=cells.length; i<len; ++i) {
++    var c = cells[i]
++    for(var j=0, cl=c.length; j<cl; ++j) {
++      res[c[j]].push(i)
+     }
+   }
+-  if(offset === undefined) {
+-    offset = 0
+-    for(var i=0; i<d; ++i) {
+-      if(stride[i] < 0) {
+-        offset -= (shape[i]-1)*stride[i]
++  return res
++}
++exports.dual = dual
++
++//Enumerates all cells in the complex
++function explode(cells) {
++  var result = []
++  for(var i=0, il=cells.length; i<il; ++i) {
++    var c = cells[i]
++      , cl = c.length|0
++    for(var j=1, jl=(1<<cl); j<jl; ++j) {
++      var b = []
++      for(var k=0; k<cl; ++k) {
++        if((j >>> k) & 1) {
++          b.push(c[k])
++        }
+       }
++      result.push(b)
+     }
+   }
+-  var dtype = arrayDType(data)
+-  var ctor_list = CACHED_CONSTRUCTORS[dtype]
+-  while(ctor_list.length <= d+1) {
+-    ctor_list.push(compileConstructor(dtype, ctor_list.length-1))
+-  }
+-  var ctor = ctor_list[d+1]
+-  return ctor(data, shape, stride, offset)
++  return normalize(result)
+ }
++exports.explode = explode
+ 
+-module.exports = wrappedNDArrayCtor
+-
+-},{"iota-array":245,"is-buffer":246}],434:[function(require,module,exports){
+-/*!
+- * repeat-string <https://github.com/jonschlinkert/repeat-string>
+- *
+- * Copyright (c) 2014-2015, Jon Schlinkert.
+- * Licensed under the MIT License.
+- */
+-
+-'use strict';
+-
+-/**
+- * Results cache
+- */
+-
+-var res = '';
+-var cache;
+-
+-/**
+- * Expose `repeat`
+- */
+-
+-module.exports = repeat;
+-
+-/**
+- * Repeat the given `string` the specified `number`
+- * of times.
+- *
+- * **Example:**
+- *
+- * ```js
+- * var repeat = require('repeat-string');
+- * repeat('A', 5);
+- * //=> AAAAA
+- * ```
+- *
+- * @param {String} `string` The string to repeat
+- * @param {Number} `number` The number of times to repeat the string
+- * @return {String} Repeated string
+- * @api public
+- */
+-
+-function repeat(str, num) {
+-  if (typeof str !== 'string') {
+-    throw new TypeError('repeat-string expects a string.');
++//Enumerates all of the n-cells of a cell complex
++function skeleton(cells, n) {
++  if(n < 0) {
++    return []
+   }
+-
+-  // cover common, quick use cases
+-  if (num === 1) return str;
+-  if (num === 2) return str + str;
+-
+-  var max = str.length * num;
+-  if (cache !== str || typeof cache === 'undefined') {
+-    cache = str;
+-    res = '';
++  var result = []
++    , k0     = (1<<(n+1))-1
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var k=k0; k<(1<<c.length); k=bits.nextCombination(k)) {
++      var b = new Array(n+1)
++        , l = 0
++      for(var j=0; j<c.length; ++j) {
++        if(k & (1<<j)) {
++          b[l++] = c[j]
++        }
++      }
++      result.push(b)
++    }
+   }
++  return normalize(result)
++}
++exports.skeleton = skeleton;
+ 
+-  while (max > res.length && num > 0) {
+-    if (num & 1) {
+-      res += str;
++//Computes the boundary of all cells, does not remove duplicates
++function boundary(cells) {
++  var res = []
++  for(var i=0,il=cells.length; i<il; ++i) {
++    var c = cells[i]
++    for(var j=0,cl=c.length; j<cl; ++j) {
++      var b = new Array(c.length-1)
++      for(var k=0, l=0; k<cl; ++k) {
++        if(k !== j) {
++          b[l++] = c[k]
++        }
++      }
++      res.push(b)
+     }
+-
+-    num >>= 1;
+-    if (!num) break;
+-    str += str;
+   }
+-
+-  return res.substr(0, max);
++  return normalize(res)
+ }
++exports.boundary = boundary;
+ 
+-
+-},{}],435:[function(require,module,exports){
+-(function (global){
+-module.exports =
+-  global.performance &&
+-  global.performance.now ? function now() {
+-    return performance.now()
+-  } : Date.now || function now() {
+-    return +new Date
++//Computes connected components for a dense cell complex
++function connectedComponents_dense(cells, vertex_count) {
++  var labels = new UnionFind(vertex_count)
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      for(var k=j+1; k<c.length; ++k) {
++        labels.link(c[j], c[k])
++      }
++    }
+   }
++  var components = []
++    , component_labels = labels.ranks
++  for(var i=0; i<component_labels.length; ++i) {
++    component_labels[i] = -1
++  }
++  for(var i=0; i<cells.length; ++i) {
++    var l = labels.find(cells[i][0])
++    if(component_labels[l] < 0) {
++      component_labels[l] = components.length
++      components.push([cells[i].slice(0)])
++    } else {
++      components[component_labels[l]].push(cells[i].slice(0))
++    }
++  }
++  return components
++}
+ 
+-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+-},{}],436:[function(require,module,exports){
+-"use strict"
+-
+-var determinant = require("robust-determinant")
+-
+-var NUM_EXPAND = 6
+-
+-function generateSolver(n) {
+-  var funcName = "robustLinearSolve" + n + "d"
+-  var code = ["function ", funcName, "(A,b){return ["]
+-  for(var i=0; i<n; ++i) {
+-    code.push("det([")
+-    for(var j=0; j<n; ++j) {
+-      if(j > 0) {
+-        code.push(",")
+-      }
+-      code.push("[")
+-      for(var k=0; k<n; ++k) {
+-        if(k > 0) {
+-          code.push(",")
+-        }
+-        if(k === i) {
+-          code.push("+b[", j, "]")
+-        } else {
+-          code.push("+A[", j, "][", k, "]")
+-        }
++//Computes connected components for a sparse graph
++function connectedComponents_sparse(cells) {
++  var vertices  = unique(normalize(skeleton(cells, 0)))
++    , labels    = new UnionFind(vertices.length)
++  for(var i=0; i<cells.length; ++i) {
++    var c = cells[i]
++    for(var j=0; j<c.length; ++j) {
++      var vj = findCell(vertices, [c[j]])
++      for(var k=j+1; k<c.length; ++k) {
++        labels.link(vj, findCell(vertices, [c[k]]))
+       }
+-      code.push("]")
+     }
+-    code.push("]),")
+   }
+-  code.push("det(A)]}return ", funcName)
+-  var proc = new Function("det", code.join(""))
+-  if(n < 6) {
+-    return proc(determinant[n])
++  var components        = []
++    , component_labels  = labels.ranks
++  for(var i=0; i<component_labels.length; ++i) {
++    component_labels[i] = -1
++  }
++  for(var i=0; i<cells.length; ++i) {
++    var l = labels.find(findCell(vertices, [cells[i][0]]));
++    if(component_labels[l] < 0) {
++      component_labels[l] = components.length
++      components.push([cells[i].slice(0)])
++    } else {
++      components[component_labels[l]].push(cells[i].slice(0))
++    }
++  }
++  return components
++}
++
++//Computes connected components for a cell complex
++function connectedComponents(cells, vertex_count) {
++  if(vertex_count) {
++    return connectedComponents_dense(cells, vertex_count)
+   }
+-  return proc(determinant)
++  return connectedComponents_sparse(cells)
+ }
++exports.connectedComponents = connectedComponents
+ 
+-function robustLinearSolve0d() {
+-  return [ 0 ]
++},{"bit-twiddle":49,"union-find":450}],430:[function(require,module,exports){
++arguments[4][49][0].apply(exports,arguments)
++},{"dup":49}],431:[function(require,module,exports){
++arguments[4][429][0].apply(exports,arguments)
++},{"bit-twiddle":430,"dup":429,"union-find":432}],432:[function(require,module,exports){
++"use strict"; "use restrict";
++
++module.exports = UnionFind;
++
++function UnionFind(count) {
++  this.roots = new Array(count);
++  this.ranks = new Array(count);
++  
++  for(var i=0; i<count; ++i) {
++    this.roots[i] = i;
++    this.ranks[i] = 0;
++  }
+ }
+ 
+-function robustLinearSolve1d(A, b) {
+-  return [ [ b[0] ], [ A[0][0] ] ]
++UnionFind.prototype.length = function() {
++  return this.roots.length;
+ }
+ 
+-var CACHE = [
+-  robustLinearSolve0d,
+-  robustLinearSolve1d
+-]
++UnionFind.prototype.makeSet = function() {
++  var n = this.roots.length;
++  this.roots.push(n);
++  this.ranks.push(0);
++  return n;
++}
+ 
+-function generateDispatch() {
+-  while(CACHE.length < NUM_EXPAND) {
+-    CACHE.push(generateSolver(CACHE.length))
++UnionFind.prototype.find = function(x) {
++  var roots = this.roots;
++  while(roots[x] !== x) {
++    var y = roots[x];
++    roots[x] = roots[y];
++    x = y;
+   }
+-  var procArgs = []
+-  var code = ["function dispatchLinearSolve(A,b){switch(A.length){"]
+-  for(var i=0; i<NUM_EXPAND; ++i) {
+-    procArgs.push("s" + i)
+-    code.push("case ", i, ":return s", i, "(A,b);")
++  return x;
++}
++
++UnionFind.prototype.link = function(x, y) {
++  var xr = this.find(x)
++    , yr = this.find(y);
++  if(xr === yr) {
++    return;
+   }
+-  code.push("}var s=CACHE[A.length];if(!s)s=CACHE[A.length]=g(A.length);return s(A,b)}return dispatchLinearSolve")
+-  procArgs.push("CACHE", "g", code.join(""))
+-  var proc = Function.apply(undefined, procArgs)
+-  module.exports = proc.apply(undefined, CACHE.concat([CACHE, generateSolver]))
+-  for(var i=0; i<NUM_EXPAND; ++i) {
+-    module.exports[i] = CACHE[i]
++  var ranks = this.ranks
++    , roots = this.roots
++    , xd    = ranks[xr]
++    , yd    = ranks[yr];
++  if(xd < yd) {
++    roots[xr] = yr;
++  } else if(yd < xd) {
++    roots[yr] = xr;
++  } else {
++    roots[yr] = xr;
++    ++ranks[xr];
+   }
+ }
+ 
+-generateDispatch()
+-},{"robust-determinant":438}],437:[function(require,module,exports){
++
++},{}],433:[function(require,module,exports){
+ "use strict"
+ 
+-module.exports = compressExpansion
++module.exports = simplifyPolygon
+ 
+-function compressExpansion(e) {
+-  var m = e.length
+-  var Q = e[e.length-1]
+-  var bottom = m
+-  for(var i=m-2; i>=0; --i) {
+-    var a = Q
+-    var b = e[i]
+-    Q = a + b
+-    var bv = Q - a
+-    var q = b - bv
+-    if(q) {
+-      e[--bottom] = Q
+-      Q = q
+-    }
+-  }
+-  var top = 0
+-  for(var i=bottom; i<m; ++i) {
+-    var a = e[i]
+-    var b = Q
+-    Q = a + b
+-    var bv = Q - a
+-    var q = b - bv
+-    if(q) {
+-      e[top++] = q
+-    }
+-  }
+-  e[top++] = Q
+-  e.length = top
+-  return e
++var orient = require("robust-orientation")
++var sc = require("simplicial-complex")
++
++function errorWeight(base, a, b) {
++  var area = Math.abs(orient(base, a, b))
++  var perim = Math.sqrt(Math.pow(a[0] - b[0], 2) + Math.pow(a[1]-b[1], 2))
++  return area / perim
+ }
+-},{}],438:[function(require,module,exports){
+-"use strict"
+ 
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
+-var robustScale = require("robust-scale")
+-var compress = require("robust-compress")
++function simplifyPolygon(cells, positions, minArea) {
+ 
+-var NUM_EXPANDED = 6
++  var n = positions.length
++  var nc = cells.length
++  var inv = new Array(n)
++  var outv = new Array(n)
++  var weights = new Array(n)
++  var dead = new Array(n)
++  
++  //Initialize tables
++  for(var i=0; i<n; ++i) {
++    inv[i] = outv[i] = -1
++    weights[i] = Infinity
++    dead[i] = false
++  }
+ 
+-function cofactor(m, c) {
+-  var result = new Array(m.length-1)
+-  for(var i=1; i<m.length; ++i) {
+-    var r = result[i-1] = new Array(m.length-1)
+-    for(var j=0,k=0; j<m.length; ++j) {
+-      if(j === c) {
+-        continue
+-      }
+-      r[k++] = m[i][j]
++  //Compute neighbors
++  for(var i=0; i<nc; ++i) {
++    var c = cells[i]
++    if(c.length !== 2) {
++      throw new Error("Input must be a graph")
++    }
++    var s = c[1]
++    var t = c[0]
++    if(outv[t] !== -1) {
++      outv[t] = -2
++    } else {
++      outv[t] = s
++    }
++    if(inv[s] !== -1) {
++      inv[s] = -2
++    } else {
++      inv[s] = t
+     }
+   }
+-  return result
+-}
+ 
+-function matrix(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = new Array(n)
+-    for(var j=0; j<n; ++j) {
+-      result[i][j] = ["m[", i, "][", j, "]"].join("")
++  //Updates the weight for vertex i
++  function computeWeight(i) {
++    if(dead[i]) {
++      return Infinity
++    }
++    //TODO: Check that the line segment doesn't cross once simplified
++    var s = inv[i]
++    var t = outv[i]
++    if((s<0) || (t<0)) {
++      return Infinity
++    } else {
++      return errorWeight(positions[i], positions[s], positions[t])
+     }
+   }
+-  return result
+-}
+ 
+-function sign(n) {
+-  if(n & 1) {
+-    return "-"
++  //Swaps two nodes on the heap (i,j) are the index of the nodes
++  function heapSwap(i,j) {
++    var a = heap[i]
++    var b = heap[j]
++    heap[i] = b
++    heap[j] = a
++    index[a] = j
++    index[b] = i
+   }
+-  return ""
+-}
+ 
+-function generateSum(expr) {
+-  if(expr.length === 1) {
+-    return expr[0]
+-  } else if(expr.length === 2) {
+-    return ["sum(", expr[0], ",", expr[1], ")"].join("")
+-  } else {
+-    var m = expr.length>>1
+-    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
++  //Returns the weight of node i on the heap
++  function heapWeight(i) {
++    return weights[heap[i]]
+   }
+-}
+ 
+-function determinant(m) {
+-  if(m.length === 2) {
+-    return ["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")
+-  } else {
+-    var expr = []
+-    for(var i=0; i<m.length; ++i) {
+-      expr.push(["scale(", determinant(cofactor(m, i)), ",", sign(i), m[0][i], ")"].join(""))
++  function heapParent(i) {
++    if(i & 1) {
++      return (i - 1) >> 1
+     }
+-    return generateSum(expr)
++    return (i >> 1) - 1
+   }
+-}
+-
+-function compileDeterminant(n) {
+-  var proc = new Function("sum", "scale", "prod", "compress", [
+-    "function robustDeterminant",n, "(m){return compress(", 
+-      determinant(matrix(n)),
+-    ")};return robustDeterminant", n].join(""))
+-  return proc(robustSum, robustScale, twoProduct, compress)
+-}
+-
+-var CACHE = [
+-  function robustDeterminant0() { return [0] },
+-  function robustDeterminant1(m) { return [m[0][0]] }
+-]
+ 
+-function generateDispatch() {
+-  while(CACHE.length < NUM_EXPANDED) {
+-    CACHE.push(compileDeterminant(CACHE.length))
+-  }
+-  var procArgs = []
+-  var code = ["function robustDeterminant(m){switch(m.length){"]
+-  for(var i=0; i<NUM_EXPANDED; ++i) {
+-    procArgs.push("det" + i)
+-    code.push("case ", i, ":return det", i, "(m);")
+-  }
+-  code.push("}\
+-var det=CACHE[m.length];\
+-if(!det)\
+-det=CACHE[m.length]=gen(m.length);\
+-return det(m);\
+-}\
+-return robustDeterminant")
+-  procArgs.push("CACHE", "gen", code.join(""))
+-  var proc = Function.apply(undefined, procArgs)
+-  module.exports = proc.apply(undefined, CACHE.concat([CACHE, compileDeterminant]))
+-  for(var i=0; i<CACHE.length; ++i) {
+-    module.exports[i] = CACHE[i]
++  //Bubble element i down the heap
++  function heapDown(i) {
++    var w = heapWeight(i)
++    while(true) {
++      var tw = w
++      var left  = 2*i + 1
++      var right = 2*(i + 1)
++      var next = i
++      if(left < heapCount) {
++        var lw = heapWeight(left)
++        if(lw < tw) {
++          next = left
++          tw = lw
++        }
++      }
++      if(right < heapCount) {
++        var rw = heapWeight(right)
++        if(rw < tw) {
++          next = right
++        }
++      }
++      if(next === i) {
++        return i
++      }
++      heapSwap(i, next)
++      i = next      
++    }
+   }
+-}
+-
+-generateDispatch()
+-},{"robust-compress":437,"robust-scale":440,"robust-sum":442,"two-product":456}],439:[function(require,module,exports){
+-"use strict"
+-
+-var twoProduct = require("two-product")
+-var robustSum = require("robust-sum")
+-var robustScale = require("robust-scale")
+-var robustSubtract = require("robust-subtract")
+-
+-var NUM_EXPAND = 5
+ 
+-var EPSILON     = 1.1102230246251565e-16
+-var ERRBOUND3   = (3.0 + 16.0 * EPSILON) * EPSILON
+-var ERRBOUND4   = (7.0 + 56.0 * EPSILON) * EPSILON
+-
+-function cofactor(m, c) {
+-  var result = new Array(m.length-1)
+-  for(var i=1; i<m.length; ++i) {
+-    var r = result[i-1] = new Array(m.length-1)
+-    for(var j=0,k=0; j<m.length; ++j) {
+-      if(j === c) {
+-        continue
++  //Bubbles element i up the heap
++  function heapUp(i) {
++    var w = heapWeight(i)
++    while(i > 0) {
++      var parent = heapParent(i)
++      if(parent >= 0) {
++        var pw = heapWeight(parent)
++        if(w < pw) {
++          heapSwap(i, parent)
++          i = parent
++          continue
++        }
+       }
+-      r[k++] = m[i][j]
++      return i
+     }
+   }
+-  return result
+-}
+ 
+-function matrix(n) {
+-  var result = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    result[i] = new Array(n)
+-    for(var j=0; j<n; ++j) {
+-      result[i][j] = ["m", j, "[", (n-i-1), "]"].join("")
++  //Pop minimum element
++  function heapPop() {
++    if(heapCount > 0) {
++      var head = heap[0]
++      heapSwap(0, heapCount-1)
++      heapCount -= 1
++      heapDown(0)
++      return head
+     }
++    return -1
+   }
+-  return result
+-}
+ 
+-function sign(n) {
+-  if(n & 1) {
+-    return "-"
++  //Update heap item i
++  function heapUpdate(i, w) {
++    var a = heap[i]
++    if(weights[a] === w) {
++      return i
++    }
++    weights[a] = -Infinity
++    heapUp(i)
++    heapPop()
++    weights[a] = w
++    heapCount += 1
++    return heapUp(heapCount-1)
+   }
+-  return ""
+-}
+ 
+-function generateSum(expr) {
+-  if(expr.length === 1) {
+-    return expr[0]
+-  } else if(expr.length === 2) {
+-    return ["sum(", expr[0], ",", expr[1], ")"].join("")
+-  } else {
+-    var m = expr.length>>1
+-    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
+-  }
+-}
++  //Kills a vertex (assume vertex already removed from heap)
++  function kill(i) {
++    if(dead[i]) {
++      return
++    }
++    //Kill vertex
++    dead[i] = true
++    //Fixup topology
++    var s = inv[i]
++    var t = outv[i]
++    if(inv[t] >= 0) {
++      inv[t] = s
++    }
++    if(outv[s] >= 0) {
++      outv[s] = t
++    }
+ 
+-function determinant(m) {
+-  if(m.length === 2) {
+-    return [["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")]
+-  } else {
+-    var expr = []
+-    for(var i=0; i<m.length; ++i) {
+-      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
++    //Update weights on s and t
++    if(index[s] >= 0) {
++      heapUpdate(index[s], computeWeight(s))
++    }
++    if(index[t] >= 0) {
++      heapUpdate(index[t], computeWeight(t))
+     }
+-    return expr
+   }
+-}
+ 
+-function orientation(n) {
+-  var pos = []
+-  var neg = []
+-  var m = matrix(n)
+-  var args = []
++  //Initialize weights and heap
++  var heap = []
++  var index = new Array(n)
+   for(var i=0; i<n; ++i) {
+-    if((i&1)===0) {
+-      pos.push.apply(pos, determinant(cofactor(m, i)))
++    var w = weights[i] = computeWeight(i)
++    if(w < Infinity) {
++      index[i] = heap.length
++      heap.push(i)
+     } else {
+-      neg.push.apply(neg, determinant(cofactor(m, i)))
++      index[i] = -1
+     }
+-    args.push("m" + i)
+   }
+-  var posExpr = generateSum(pos)
+-  var negExpr = generateSum(neg)
+-  var funcName = "orientation" + n + "Exact"
+-  var code = ["function ", funcName, "(", args.join(), "){var p=", posExpr, ",n=", negExpr, ",d=sub(p,n);\
+-return d[d.length-1];};return ", funcName].join("")
+-  var proc = new Function("sum", "prod", "scale", "sub", code)
+-  return proc(robustSum, twoProduct, robustScale, robustSubtract)
+-}
+-
+-var orientation3Exact = orientation(3)
+-var orientation4Exact = orientation(4)
+-
+-var CACHED = [
+-  function orientation0() { return 0 },
+-  function orientation1() { return 0 },
+-  function orientation2(a, b) { 
+-    return b[0] - a[0]
+-  },
+-  function orientation3(a, b, c) {
+-    var l = (a[1] - c[1]) * (b[0] - c[0])
+-    var r = (a[0] - c[0]) * (b[1] - c[1])
+-    var det = l - r
+-    var s
+-    if(l > 0) {
+-      if(r <= 0) {
+-        return det
+-      } else {
+-        s = l + r
+-      }
+-    } else if(l < 0) {
+-      if(r >= 0) {
+-        return det
+-      } else {
+-        s = -(l + r)
+-      }
+-    } else {
+-      return det
++  var heapCount = heap.length
++  for(var i=heapCount>>1; i>=0; --i) {
++    heapDown(i)
++  }
++  
++  //Kill vertices
++  while(true) {
++    var hmin = heapPop()
++    if((hmin < 0) || (weights[hmin] > minArea)) {
++      break
+     }
+-    var tol = ERRBOUND3 * s
+-    if(det >= tol || det <= -tol) {
+-      return det
++    kill(hmin)
++  }
++
++  //Build collapsed vertex table
++  var npositions = []
++  for(var i=0; i<n; ++i) {
++    if(!dead[i]) {
++      index[i] = npositions.length
++      npositions.push(positions[i].slice())
+     }
+-    return orientation3Exact(a, b, c)
+-  },
+-  function orientation4(a,b,c,d) {
+-    var adx = a[0] - d[0]
+-    var bdx = b[0] - d[0]
+-    var cdx = c[0] - d[0]
+-    var ady = a[1] - d[1]
+-    var bdy = b[1] - d[1]
+-    var cdy = c[1] - d[1]
+-    var adz = a[2] - d[2]
+-    var bdz = b[2] - d[2]
+-    var cdz = c[2] - d[2]
+-    var bdxcdy = bdx * cdy
+-    var cdxbdy = cdx * bdy
+-    var cdxady = cdx * ady
+-    var adxcdy = adx * cdy
+-    var adxbdy = adx * bdy
+-    var bdxady = bdx * ady
+-    var det = adz * (bdxcdy - cdxbdy) 
+-            + bdz * (cdxady - adxcdy)
+-            + cdz * (adxbdy - bdxady)
+-    var permanent = (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * Math.abs(adz)
+-                  + (Math.abs(cdxady) + Math.abs(adxcdy)) * Math.abs(bdz)
+-                  + (Math.abs(adxbdy) + Math.abs(bdxady)) * Math.abs(cdz)
+-    var tol = ERRBOUND4 * permanent
+-    if ((det > tol) || (-det > tol)) {
+-      return det
++  }
++  var nv = npositions.length
++
++  function tortoiseHare(seq, start) {
++    if(seq[start] < 0) {
++      return start
+     }
+-    return orientation4Exact(a,b,c,d)
+-  }
+-]
++    var t = start
++    var h = start
++    do {
++      //Walk two steps with h
++      var nh = seq[h]
++      if(!dead[h] || nh < 0 || nh === h) {
++        break
++      }
++      h = nh
++      nh = seq[h]
++      if(!dead[h] || nh < 0 || nh === h) {
++        break
++      }
++      h = nh
+ 
+-function slowOrient(args) {
+-  var proc = CACHED[args.length]
+-  if(!proc) {
+-    proc = CACHED[args.length] = orientation(args.length)
++      //Walk one step with t
++      t = seq[t]
++    } while(t !== h)
++    //Compress cycles
++    for(var v=start; v!==h; v = seq[v]) {
++      seq[v] = h
++    }
++    return h
+   }
+-  return proc.apply(undefined, args)
+-}
+ 
+-function generateOrientationProc() {
+-  while(CACHED.length <= NUM_EXPAND) {
+-    CACHED.push(orientation(CACHED.length))
+-  }
+-  var args = []
+-  var procArgs = ["slow"]
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    args.push("a" + i)
+-    procArgs.push("o" + i)
+-  }
+-  var code = [
+-    "function getOrientation(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
+-  ]
+-  for(var i=2; i<=NUM_EXPAND; ++i) {
+-    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
+-  }
+-  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return getOrientation")
+-  procArgs.push(code.join(""))
++  var ncells = []
++  cells.forEach(function(c) {
++    var tin = tortoiseHare(inv, c[0])
++    var tout = tortoiseHare(outv, c[1])
++    if(tin >= 0 && tout >= 0 && tin !== tout) {
++      var cin = index[tin]
++      var cout = index[tout]
++      if(cin !== cout) {
++        ncells.push([ cin, cout ])
++      }
++    }
++  })
+ 
+-  var proc = Function.apply(undefined, procArgs)
+-  module.exports = proc.apply(undefined, [slowOrient].concat(CACHED))
+-  for(var i=0; i<=NUM_EXPAND; ++i) {
+-    module.exports[i] = CACHED[i]
++  //Normalize result
++  sc.unique(sc.normalize(ncells))
++
++  //Return final list of cells
++  return {
++    positions: npositions,
++    edges: ncells
+   }
+ }
+-
+-generateOrientationProc()
+-},{"robust-scale":440,"robust-subtract":441,"robust-sum":442,"two-product":456}],440:[function(require,module,exports){
++},{"robust-orientation":418,"simplicial-complex":431}],434:[function(require,module,exports){
+ "use strict"
+ 
+-var twoProduct = require("two-product")
+-var twoSum = require("two-sum")
++module.exports = orderSegments
+ 
+-module.exports = scaleLinearExpansion
++var orient = require("robust-orientation")
+ 
+-function scaleLinearExpansion(e, scale) {
+-  var n = e.length
+-  if(n === 1) {
+-    var ts = twoProduct(e[0], scale)
+-    if(ts[0]) {
+-      return ts
+-    }
+-    return [ ts[1] ]
+-  }
+-  var g = new Array(2 * n)
+-  var q = [0.1, 0.1]
+-  var t = [0.1, 0.1]
+-  var count = 0
+-  twoProduct(e[0], scale, q)
+-  if(q[0]) {
+-    g[count++] = q[0]
+-  }
+-  for(var i=1; i<n; ++i) {
+-    twoProduct(e[i], scale, t)
+-    var pq = q[1]
+-    twoSum(pq, t[0], q)
+-    if(q[0]) {
+-      g[count++] = q[0]
++function horizontalOrder(a, b) {
++  var bl, br
++  if(b[0][0] < b[1][0]) {
++    bl = b[0]
++    br = b[1]
++  } else if(b[0][0] > b[1][0]) {
++    bl = b[1]
++    br = b[0]
++  } else {
++    var alo = Math.min(a[0][1], a[1][1])
++    var ahi = Math.max(a[0][1], a[1][1])
++    var blo = Math.min(b[0][1], b[1][1])
++    var bhi = Math.max(b[0][1], b[1][1])
++    if(ahi < blo) {
++      return ahi - blo
+     }
+-    var a = t[1]
+-    var b = q[1]
+-    var x = a + b
+-    var bv = x - a
+-    var y = b - bv
+-    q[1] = x
+-    if(y) {
+-      g[count++] = y
++    if(alo > bhi) {
++      return alo - bhi
+     }
++    return ahi - bhi
+   }
+-  if(q[1]) {
+-    g[count++] = q[1]
++  var al, ar
++  if(a[0][1] < a[1][1]) {
++    al = a[0]
++    ar = a[1]
++  } else {
++    al = a[1]
++    ar = a[0]
+   }
+-  if(count === 0) {
+-    g[count++] = 0.0
++  var d = orient(br, bl, al)
++  if(d) {
++    return d
+   }
+-  g.length = count
+-  return g
+-}
+-},{"two-product":456,"two-sum":457}],441:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = robustSubtract
+-
+-//Easy case: Add two scalars
+-function scalarScalar(a, b) {
+-  var x = a + b
+-  var bv = x - a
+-  var av = x - bv
+-  var br = b - bv
+-  var ar = a - av
+-  var y = ar + br
+-  if(y) {
+-    return [y, x]
++  d = orient(br, bl, ar)
++  if(d) {
++    return d
+   }
+-  return [x]
++  return ar - br
+ }
+ 
+-function robustSubtract(e, f) {
+-  var ne = e.length|0
+-  var nf = f.length|0
+-  if(ne === 1 && nf === 1) {
+-    return scalarScalar(e[0], -f[0])
+-  }
+-  var n = ne + nf
+-  var g = new Array(n)
+-  var count = 0
+-  var eptr = 0
+-  var fptr = 0
+-  var abs = Math.abs
+-  var ei = e[eptr]
+-  var ea = abs(ei)
+-  var fi = -f[fptr]
+-  var fa = abs(fi)
+-  var a, b
+-  if(ea < fa) {
+-    b = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
++function orderSegments(b, a) {
++  var al, ar
++  if(a[0][0] < a[1][0]) {
++    al = a[0]
++    ar = a[1]
++  } else if(a[0][0] > a[1][0]) {
++    al = a[1]
++    ar = a[0]
+   } else {
+-    b = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
+-      fa = abs(fi)
+-    }
++    return horizontalOrder(a, b)
+   }
+-  if((eptr < ne && ea < fa) || (fptr >= nf)) {
+-    a = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
++  var bl, br
++  if(b[0][0] < b[1][0]) {
++    bl = b[0]
++    br = b[1]
++  } else if(b[0][0] > b[1][0]) {
++    bl = b[1]
++    br = b[0]
+   } else {
+-    a = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
+-      fa = abs(fi)
+-    }
++    return -horizontalOrder(b, a)
+   }
+-  var x = a + b
+-  var bv = x - a
+-  var y = b - bv
+-  var q0 = y
+-  var q1 = x
+-  var _x, _bv, _av, _br, _ar
+-  while(eptr < ne && fptr < nf) {
+-    if(ea < fa) {
+-      a = ei
+-      eptr += 1
+-      if(eptr < ne) {
+-        ei = e[eptr]
+-        ea = abs(ei)
+-      }
+-    } else {
+-      a = fi
+-      fptr += 1
+-      if(fptr < nf) {
+-        fi = -f[fptr]
+-        fa = abs(fi)
+-      }
++  var d1 = orient(al, ar, br)
++  var d2 = orient(al, ar, bl)
++  if(d1 < 0) {
++    if(d2 <= 0) {
++      return d1
+     }
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
++  } else if(d1 > 0) {
++    if(d2 >= 0) {
++      return d1
+     }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
++  } else if(d2) {
++    return d2
+   }
+-  while(eptr < ne) {
+-    a = ei
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
++  d1 = orient(br, bl, ar)
++  d2 = orient(br, bl, al)
++  if(d1 < 0) {
++    if(d2 <= 0) {
++      return d1
+     }
+-  }
+-  while(fptr < nf) {
+-    a = fi
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    } 
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = -f[fptr]
++  } else if(d1 > 0) {
++    if(d2 >= 0) {
++      return d1
+     }
++  } else if(d2) {
++    return d2
+   }
+-  if(q0) {
+-    g[count++] = q0
+-  }
+-  if(q1) {
+-    g[count++] = q1
+-  }
+-  if(!count) {
+-    g[count++] = 0.0  
+-  }
+-  g.length = count
+-  return g
++  return ar[0] - br[0]
+ }
+-},{}],442:[function(require,module,exports){
++},{"robust-orientation":418}],435:[function(require,module,exports){
+ "use strict"
+ 
+-module.exports = linearExpansionSum
++module.exports = createSlabDecomposition
+ 
+-//Easy case: Add two scalars
+-function scalarScalar(a, b) {
+-  var x = a + b
+-  var bv = x - a
+-  var av = x - bv
+-  var br = b - bv
+-  var ar = a - av
+-  var y = ar + br
+-  if(y) {
+-    return [y, x]
+-  }
+-  return [x]
++var bounds = require("binary-search-bounds")
++var createRBTree = require("functional-red-black-tree")
++var orient = require("robust-orientation")
++var orderSegments = require("./lib/order-segments")
++
++function SlabDecomposition(slabs, coordinates, horizontal) {
++  this.slabs = slabs
++  this.coordinates = coordinates
++  this.horizontal = horizontal
+ }
+ 
+-function linearExpansionSum(e, f) {
+-  var ne = e.length|0
+-  var nf = f.length|0
+-  if(ne === 1 && nf === 1) {
+-    return scalarScalar(e[0], f[0])
+-  }
+-  var n = ne + nf
+-  var g = new Array(n)
+-  var count = 0
+-  var eptr = 0
+-  var fptr = 0
+-  var abs = Math.abs
+-  var ei = e[eptr]
+-  var ea = abs(ei)
+-  var fi = f[fptr]
+-  var fa = abs(fi)
+-  var a, b
+-  if(ea < fa) {
+-    b = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
+-  } else {
+-    b = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
+-      fa = abs(fi)
+-    }
+-  }
+-  if((eptr < ne && ea < fa) || (fptr >= nf)) {
+-    a = ei
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-      ea = abs(ei)
+-    }
+-  } else {
+-    a = fi
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
+-      fa = abs(fi)
++var proto = SlabDecomposition.prototype
++
++function compareHorizontal(e, y) {
++  return e.y - y
++}
++
++function searchBucket(root, p) {
++  var lastNode = null
++  while(root) {
++    var seg = root.key
++    var l, r
++    if(seg[0][0] < seg[1][0]) {
++      l = seg[0]
++      r = seg[1]
++    } else {
++      l = seg[1]
++      r = seg[0]
+     }
+-  }
+-  var x = a + b
+-  var bv = x - a
+-  var y = b - bv
+-  var q0 = y
+-  var q1 = x
+-  var _x, _bv, _av, _br, _ar
+-  while(eptr < ne && fptr < nf) {
+-    if(ea < fa) {
+-      a = ei
+-      eptr += 1
+-      if(eptr < ne) {
+-        ei = e[eptr]
+-        ea = abs(ei)
++    var o = orient(l, r, p)
++    if(o < 0) {
++      root = root.left
++    } else if(o > 0) {
++      if(p[0] !== seg[1][0]) {
++        lastNode = root
++        root = root.right
++      } else {
++        var val = searchBucket(root.right, p)
++        if(val) {
++          return val
++        }
++        root = root.left
+       }
+     } else {
+-      a = fi
+-      fptr += 1
+-      if(fptr < nf) {
+-        fi = f[fptr]
+-        fa = abs(fi)
+-      }
+-    }
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-  }
+-  while(eptr < ne) {
+-    a = ei
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    }
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    eptr += 1
+-    if(eptr < ne) {
+-      ei = e[eptr]
+-    }
+-  }
+-  while(fptr < nf) {
+-    a = fi
+-    b = q0
+-    x = a + b
+-    bv = x - a
+-    y = b - bv
+-    if(y) {
+-      g[count++] = y
+-    } 
+-    _x = q1 + x
+-    _bv = _x - q1
+-    _av = _x - _bv
+-    _br = x - _bv
+-    _ar = q1 - _av
+-    q0 = _ar + _br
+-    q1 = _x
+-    fptr += 1
+-    if(fptr < nf) {
+-      fi = f[fptr]
++      if(p[0] !== seg[1][0]) {
++        return root
++      } else {
++        var val = searchBucket(root.right, p)
++        if(val) {
++          return val
++        }
++        root = root.left
++      }
+     }
+   }
+-  if(q0) {
+-    g[count++] = q0
++  return lastNode
++}
++
++proto.castUp = function(p) {
++  var bucket = bounds.le(this.coordinates, p[0])
++  if(bucket < 0) {
++    return -1
+   }
+-  if(q1) {
+-    g[count++] = q1
++  var root = this.slabs[bucket]
++  var hitNode = searchBucket(this.slabs[bucket], p)
++  var lastHit = -1
++  if(hitNode) {
++    lastHit = hitNode.value
+   }
+-  if(!count) {
+-    g[count++] = 0.0  
++  //Edge case: need to handle horizontal segments (sucks)
++  if(this.coordinates[bucket] === p[0]) {
++    var lastSegment = null
++    if(hitNode) {
++      lastSegment = hitNode.key
++    }
++    if(bucket > 0) {
++      var otherHitNode = searchBucket(this.slabs[bucket-1], p)
++      if(otherHitNode) {
++        if(lastSegment) {
++          if(orderSegments(otherHitNode.key, lastSegment) > 0) {
++            lastSegment = otherHitNode.key
++            lastHit = otherHitNode.value
++          }
++        } else {
++          lastHit = otherHitNode.value
++          lastSegment = otherHitNode.key
++        }
++      }
++    }
++    var horiz = this.horizontal[bucket]
++    if(horiz.length > 0) {
++      var hbucket = bounds.ge(horiz, p[1], compareHorizontal)
++      if(hbucket < horiz.length) {
++        var e = horiz[hbucket]
++        if(p[1] === e.y) {
++          if(e.closed) {
++            return e.index
++          } else {
++            while(hbucket < horiz.length-1 && horiz[hbucket+1].y === p[1]) {
++              hbucket = hbucket+1
++              e = horiz[hbucket]
++              if(e.closed) {
++                return e.index
++              }
++            }
++            if(e.y === p[1] && !e.start) {
++              hbucket = hbucket+1
++              if(hbucket >= horiz.length) {
++                return lastHit
++              }
++              e = horiz[hbucket]
++            }
++          }
++        }
++        //Check if e is above/below last segment
++        if(e.start) {
++          if(lastSegment) {
++            var o = orient(lastSegment[0], lastSegment[1], [p[0], e.y])
++            if(lastSegment[0][0] > lastSegment[1][0]) {
++              o = -o
++            }
++            if(o > 0) {
++              lastHit = e.index
++            }
++          } else {
++            lastHit = e.index
++          }
++        } else if(e.y !== p[1]) {
++          lastHit = e.index
++        }
++      }
++    }
+   }
+-  g.length = count
+-  return g
++  return lastHit
+ }
+-},{}],443:[function(require,module,exports){
+-'use strict'
+ 
+-module.exports = toSuperScript
++function IntervalSegment(y, index, start, closed) {
++  this.y = y
++  this.index = index
++  this.start = start
++  this.closed = closed
++}
+ 
+-var SUPERSCRIPTS = {
+-  ' ': ' ',
+-  '0': '⁰',
+-  '1': '¹',
+-  '2': '²',
+-  '3': '³',
+-  '4': '⁴',
+-  '5': '⁵',
+-  '6': '⁶',
+-  '7': '⁷',
+-  '8': '⁸',
+-  '9': '⁹',
+-  '+': '⁺',
+-  '-': '⁻',
+-  'a': 'ᵃ',
+-  'b': 'ᵇ',
+-  'c': 'ᶜ',
+-  'd': 'ᵈ',
+-  'e': 'ᵉ',
+-  'f': 'ᶠ',
+-  'g': 'ᵍ',
+-  'h': 'ʰ',
+-  'i': 'ⁱ',
+-  'j': 'ʲ',
+-  'k': 'ᵏ',
+-  'l': 'ˡ',
+-  'm': 'ᵐ',
+-  'n': 'ⁿ',
+-  'o': 'ᵒ',
+-  'p': 'ᵖ',
+-  'r': 'ʳ',
+-  's': 'ˢ',
+-  't': 'ᵗ',
+-  'u': 'ᵘ',
+-  'v': 'ᵛ',
+-  'w': 'ʷ',
+-  'x': 'ˣ',
+-  'y': 'ʸ',
+-  'z': 'ᶻ'
++function Event(x, segment, create, index) {
++  this.x = x
++  this.segment = segment
++  this.create = create
++  this.index = index
+ }
+ 
+-function toSuperScript(x) {
+-  return x.split('').map(function(c) {
+-    if(c in SUPERSCRIPTS) {
+-      return SUPERSCRIPTS[c]
++
++function createSlabDecomposition(segments) {
++  var numSegments = segments.length
++  var numEvents = 2 * numSegments
++  var events = new Array(numEvents)
++  for(var i=0; i<numSegments; ++i) {
++    var s = segments[i]
++    var f = s[0][0] < s[1][0]
++    events[2*i] = new Event(s[0][0], s, f, i)
++    events[2*i+1] = new Event(s[1][0], s, !f, i)
++  }
++  events.sort(function(a,b) {
++    var d = a.x - b.x
++    if(d) {
++      return d
+     }
+-    return ''
+-  }).join('')
++    d = a.create - b.create
++    if(d) {
++      return d
++    }
++    return Math.min(a.segment[0][1], a.segment[1][1]) - Math.min(b.segment[0][1], b.segment[1][1])
++  })
++  var tree = createRBTree(orderSegments)
++  var slabs = []
++  var lines = []
++  var horizontal = []
++  var lastX = -Infinity
++  for(var i=0; i<numEvents; ) {
++    var x = events[i].x
++    var horiz = []
++    while(i < numEvents) {
++      var e = events[i]
++      if(e.x !== x) {
++        break
++      }
++      i += 1
++      if(e.segment[0][0] === e.x && e.segment[1][0] === e.x) {
++        if(e.create) {
++          if(e.segment[0][1] < e.segment[1][1]) {
++            horiz.push(new IntervalSegment(
++                e.segment[0][1],
++                e.index,
++                true,
++                true))
++            horiz.push(new IntervalSegment(
++                e.segment[1][1],
++                e.index,
++                false,
++                false))
++          } else {
++            horiz.push(new IntervalSegment(
++                e.segment[1][1],
++                e.index,
++                true,
++                false))
++            horiz.push(new IntervalSegment(
++                e.segment[0][1],
++                e.index,
++                false,
++                true))
++          }
++        }
++      } else {
++        if(e.create) {
++          tree = tree.insert(e.segment, e.index)
++        } else {
++          tree = tree.remove(e.segment)
++        }
++      }
++    }
++    slabs.push(tree.root)
++    lines.push(x)
++    horizontal.push(horiz)
++  }
++  return new SlabDecomposition(slabs, lines, horizontal)
+ }
+-
+-},{}],444:[function(require,module,exports){
++},{"./lib/order-segments":434,"binary-search-bounds":48,"functional-red-black-tree":101,"robust-orientation":418}],436:[function(require,module,exports){
+ "use strict"
+ 
+-var pool = require("typedarray-pool")
++var robustDot = require("robust-dot-product")
++var robustSum = require("robust-sum")
+ 
+-module.exports = createSurfaceExtractor
++module.exports = splitPolygon
++module.exports.positive = positive
++module.exports.negative = negative
+ 
+-//Helper macros
+-function array(i) {
+-  return "a" + i
+-}
+-function data(i) {
+-  return "d" + i
+-}
+-function cube(i,bitmask) {
+-  return "c" + i + "_" + bitmask
+-}
+-function shape(i) {
+-  return "s" + i
+-}
+-function stride(i,j) {
+-  return "t" + i + "_" + j
+-}
+-function offset(i) {
+-  return "o" + i
+-}
+-function scalar(i) {
+-  return "x" + i
+-}
+-function pointer(i) {
+-  return "p" + i
+-}
+-function delta(i,bitmask) {
+-  return "d" + i + "_" + bitmask
+-}
+-function index(i) {
+-  return "i" + i
+-}
+-function step(i,j) {
+-  return "u" + i + "_" + j
+-}
+-function pcube(bitmask) {
+-  return "b" + bitmask
+-}
+-function qcube(bitmask) {
+-  return "y" + bitmask
+-}
+-function pdelta(bitmask) {
+-  return "e" + bitmask
+-}
+-function vert(i) {
+-  return "v" + i
++function planeT(p, plane) {
++  var r = robustSum(robustDot(p, plane), [plane[plane.length-1]])
++  return r[r.length-1]
+ }
+-var VERTEX_IDS = "V"
+-var PHASES = "P"
+-var VERTEX_COUNT = "N"
+-var POOL_SIZE = "Q"
+-var POINTER = "X"
+-var TEMPORARY = "T"
+ 
+-function permBitmask(dimension, mask, order) {
+-  var r = 0
+-  for(var i=0; i<dimension; ++i) {
+-    if(mask & (1<<i)) {
+-      r |= (1<<order[i])
+-    }
++
++//Can't do this exactly and emit a floating point result
++function lerpW(a, wa, b, wb) {
++  var d = wb - wa
++  var t = -wa / d
++  if(t < 0.0) {
++    t = 0.0
++  } else if(t > 1.0) {
++    t = 1.0
++  }
++  var ti = 1.0 - t
++  var n = a.length
++  var r = new Array(n)
++  for(var i=0; i<n; ++i) {
++    r[i] = t * a[i] + ti * b[i]
+   }
+   return r
+ }
+ 
+-//Generates the surface procedure
+-function compileSurfaceProcedure(vertexFunc, faceFunc, phaseFunc, scalarArgs, order, typesig) {
+-  var arrayArgs = typesig.length
+-  var dimension = order.length
+-
+-  if(dimension < 2) {
+-    throw new Error("ndarray-extract-contour: Dimension must be at least 2")
++function splitPolygon(points, plane) {
++  var pos = []
++  var neg = []
++  var a = planeT(points[points.length-1], plane)
++  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
++    t = points[i]
++    var b = planeT(t, plane)
++    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
++      var p = lerpW(s, b, t, a)
++      pos.push(p)
++      neg.push(p.slice())
++    }
++    if(b < 0) {
++      neg.push(t.slice())
++    } else if(b > 0) {
++      pos.push(t.slice())
++    } else {
++      pos.push(t.slice())
++      neg.push(t.slice())
++    }
++    a = b
+   }
++  return { positive: pos, negative: neg }
++}
+ 
+-  var funcName = "extractContour" + order.join("_")
+-  var code = []
+-  var vars = []
+-  var args = []
+-
+-  //Assemble arguments
+-  for(var i=0; i<arrayArgs; ++i) {
+-    args.push(array(i))  
+-  }
+-  for(var i=0; i<scalarArgs; ++i) {
+-    args.push(scalar(i))
++function positive(points, plane) {
++  var pos = []
++  var a = planeT(points[points.length-1], plane)
++  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
++    t = points[i]
++    var b = planeT(t, plane)
++    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
++      pos.push(lerpW(s, b, t, a))
++    }
++    if(b >= 0) {
++      pos.push(t.slice())
++    }
++    a = b
+   }
++  return pos
++}
+ 
+-  //Shape
+-  for(var i=0; i<dimension; ++i) {
+-    vars.push(shape(i) + "=" + array(0) + ".shape[" + i + "]|0")
+-  }
+-  //Data, stride, offset pointers
+-  for(var i=0; i<arrayArgs; ++i) {
+-    vars.push(data(i) + "=" + array(i) + ".data",
+-              offset(i) + "=" + array(i) + ".offset|0")
+-    for(var j=0; j<dimension; ++j) {
+-      vars.push(stride(i,j) + "=" + array(i) + ".stride[" + j + "]|0")
++function negative(points, plane) {
++  var neg = []
++  var a = planeT(points[points.length-1], plane)
++  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
++    t = points[i]
++    var b = planeT(t, plane)
++    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
++      neg.push(lerpW(s, b, t, a))
+     }
+-  }
+-  //Pointer, delta and cube variables
+-  for(var i=0; i<arrayArgs; ++i) {
+-    vars.push(pointer(i) + "=" + offset(i))
+-    vars.push(cube(i,0))
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      var ptrStr = []
+-      for(var k=0; k<dimension; ++k) {
+-        if(j & (1<<k)) {
+-          ptrStr.push("-" + stride(i,k))
+-        }
+-      }
+-      vars.push(delta(i,j) + "=(" + ptrStr.join("") + ")|0")
+-      vars.push(cube(i,j) + "=0")
++    if(b <= 0) {
++      neg.push(t.slice())
+     }
++    a = b
+   }
+-  //Create step variables
+-  for(var i=0; i<arrayArgs; ++i) {
+-    for(var j=0; j<dimension; ++j) {
+-      var stepVal = [ stride(i,order[j]) ]
+-      if(j > 0) {
+-        stepVal.push(stride(i, order[j-1]) + "*" + shape(order[j-1]) )
+-      }
+-      vars.push(step(i,order[j]) + "=(" + stepVal.join("-") + ")|0")
++  return neg
++}
++},{"robust-dot-product":415,"robust-sum":423}],437:[function(require,module,exports){
++(function(window) {
++    var re = {
++        not_string: /[^s]/,
++        number: /[diefg]/,
++        json: /[j]/,
++        not_json: /[^j]/,
++        text: /^[^\x25]+/,
++        modulo: /^\x25{2}/,
++        placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijosuxX])/,
++        key: /^([a-z_][a-z_\d]*)/i,
++        key_access: /^\.([a-z_][a-z_\d]*)/i,
++        index_access: /^\[(\d+)\]/,
++        sign: /^[\+\-]/
+     }
+-  }
+-  //Create index variables
+-  for(var i=0; i<dimension; ++i) {
+-    vars.push(index(i) + "=0")
+-  }
+-  //Vertex count
+-  vars.push(VERTEX_COUNT + "=0")
+-  //Compute pool size, initialize pool step
+-  var sizeVariable = ["2"]
+-  for(var i=dimension-2; i>=0; --i) {
+-    sizeVariable.push(shape(order[i]))
+-  }
+-  //Previous phases and vertex_ids
+-  vars.push(POOL_SIZE + "=(" + sizeVariable.join("*") + ")|0",
+-            PHASES + "=mallocUint32(" + POOL_SIZE + ")",
+-            VERTEX_IDS + "=mallocUint32(" + POOL_SIZE + ")",
+-            POINTER + "=0")
+-  //Create cube variables for phases
+-  vars.push(pcube(0) + "=0")
+-  for(var j=1; j<(1<<dimension); ++j) {
+-    var cubeDelta = []
+-    var cubeStep = [ ]
+-    for(var k=0; k<dimension; ++k) {
+-      if(j & (1<<k)) {
+-        if(cubeStep.length === 0) {
+-          cubeDelta.push("1")
+-        } else {
+-          cubeDelta.unshift(cubeStep.join("*"))
++
++    function sprintf() {
++        var key = arguments[0], cache = sprintf.cache
++        if (!(cache[key] && cache.hasOwnProperty(key))) {
++            cache[key] = sprintf.parse(key)
++        }
++        return sprintf.format.call(null, cache[key], arguments)
++    }
++
++    sprintf.format = function(parse_tree, argv) {
++        var cursor = 1, tree_length = parse_tree.length, node_type = "", arg, output = [], i, k, match, pad, pad_character, pad_length, is_positive = true, sign = ""
++        for (i = 0; i < tree_length; i++) {
++            node_type = get_type(parse_tree[i])
++            if (node_type === "string") {
++                output[output.length] = parse_tree[i]
++            }
++            else if (node_type === "array") {
++                match = parse_tree[i] // convenience purposes only
++                if (match[2]) { // keyword argument
++                    arg = argv[cursor]
++                    for (k = 0; k < match[2].length; k++) {
++                        if (!arg.hasOwnProperty(match[2][k])) {
++                            throw new Error(sprintf("[sprintf] property '%s' does not exist", match[2][k]))
++                        }
++                        arg = arg[match[2][k]]
++                    }
++                }
++                else if (match[1]) { // positional argument (explicit)
++                    arg = argv[match[1]]
++                }
++                else { // positional argument (implicit)
++                    arg = argv[cursor++]
++                }
++
++                if (get_type(arg) == "function") {
++                    arg = arg()
++                }
++
++                if (re.not_string.test(match[8]) && re.not_json.test(match[8]) && (get_type(arg) != "number" && isNaN(arg))) {
++                    throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg)))
++                }
++
++                if (re.number.test(match[8])) {
++                    is_positive = arg >= 0
++                }
++
++                switch (match[8]) {
++                    case "b":
++                        arg = arg.toString(2)
++                    break
++                    case "c":
++                        arg = String.fromCharCode(arg)
++                    break
++                    case "d":
++                    case "i":
++                        arg = parseInt(arg, 10)
++                    break
++                    case "j":
++                        arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
++                    break
++                    case "e":
++                        arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential()
++                    break
++                    case "f":
++                        arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
++                    break
++                    case "g":
++                        arg = match[7] ? parseFloat(arg).toPrecision(match[7]) : parseFloat(arg)
++                    break
++                    case "o":
++                        arg = arg.toString(8)
++                    break
++                    case "s":
++                        arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg)
++                    break
++                    case "u":
++                        arg = arg >>> 0
++                    break
++                    case "x":
++                        arg = arg.toString(16)
++                    break
++                    case "X":
++                        arg = arg.toString(16).toUpperCase()
++                    break
++                }
++                if (re.json.test(match[8])) {
++                    output[output.length] = arg
++                }
++                else {
++                    if (re.number.test(match[8]) && (!is_positive || match[3])) {
++                        sign = is_positive ? "+" : "-"
++                        arg = arg.toString().replace(re.sign, "")
++                    }
++                    else {
++                        sign = ""
++                    }
++                    pad_character = match[4] ? match[4] === "0" ? "0" : match[4].charAt(1) : " "
++                    pad_length = match[6] - (sign + arg).length
++                    pad = match[6] ? (pad_length > 0 ? str_repeat(pad_character, pad_length) : "") : ""
++                    output[output.length] = match[5] ? sign + arg + pad : (pad_character === "0" ? sign + pad + arg : pad + sign + arg)
++                }
++            }
+         }
+-      }
+-      cubeStep.push(shape(order[k]))
+-    }
+-    var signFlag = ""
+-    if(cubeDelta[0].indexOf(shape(order[dimension-2])) < 0) {
+-      signFlag = "-"
++        return output.join("")
+     }
+-    var jperm = permBitmask(dimension, j, order)
+-    vars.push(pdelta(jperm) + "=(-" + cubeDelta.join("-") + ")|0",
+-              qcube(jperm) + "=(" + signFlag + cubeDelta.join("-") + ")|0",
+-              pcube(jperm) + "=0")
+-  }
+-  vars.push(vert(0) + "=0", TEMPORARY + "=0")
+ 
+-  function forLoopBegin(i, start) {
+-    code.push("for(", index(order[i]), "=", start, ";",
+-      index(order[i]), "<", shape(order[i]), ";",
+-      "++", index(order[i]), "){")
+-  }
++    sprintf.cache = {}
+ 
+-  function forLoopEnd(i) {
+-    for(var j=0; j<arrayArgs; ++j) {
+-      code.push(pointer(j), "+=", step(j,order[i]), ";")
++    sprintf.parse = function(fmt) {
++        var _fmt = fmt, match = [], parse_tree = [], arg_names = 0
++        while (_fmt) {
++            if ((match = re.text.exec(_fmt)) !== null) {
++                parse_tree[parse_tree.length] = match[0]
++            }
++            else if ((match = re.modulo.exec(_fmt)) !== null) {
++                parse_tree[parse_tree.length] = "%"
++            }
++            else if ((match = re.placeholder.exec(_fmt)) !== null) {
++                if (match[2]) {
++                    arg_names |= 1
++                    var field_list = [], replacement_field = match[2], field_match = []
++                    if ((field_match = re.key.exec(replacement_field)) !== null) {
++                        field_list[field_list.length] = field_match[1]
++                        while ((replacement_field = replacement_field.substring(field_match[0].length)) !== "") {
++                            if ((field_match = re.key_access.exec(replacement_field)) !== null) {
++                                field_list[field_list.length] = field_match[1]
++                            }
++                            else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
++                                field_list[field_list.length] = field_match[1]
++                            }
++                            else {
++                                throw new SyntaxError("[sprintf] failed to parse named argument key")
++                            }
++                        }
++                    }
++                    else {
++                        throw new SyntaxError("[sprintf] failed to parse named argument key")
++                    }
++                    match[2] = field_list
++                }
++                else {
++                    arg_names |= 2
++                }
++                if (arg_names === 3) {
++                    throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
++                }
++                parse_tree[parse_tree.length] = match
++            }
++            else {
++                throw new SyntaxError("[sprintf] unexpected placeholder")
++            }
++            _fmt = _fmt.substring(match[0].length)
++        }
++        return parse_tree
+     }
+-    code.push("}")
+-  }
+ 
+-  function fillEmptySlice(k) {
+-    for(var i=k-1; i>=0; --i) {
+-      forLoopBegin(i, 0) 
+-    }
+-    var phaseFuncArgs = []
+-    for(var i=0; i<arrayArgs; ++i) {
+-      if(typesig[i]) {
+-        phaseFuncArgs.push(data(i) + ".get(" + pointer(i) + ")")
+-      } else {
+-        phaseFuncArgs.push(data(i) + "[" + pointer(i) + "]")
+-      }
+-    }
+-    for(var i=0; i<scalarArgs; ++i) {
+-      phaseFuncArgs.push(scalar(i))
+-    }
+-    code.push(PHASES, "[", POINTER, "++]=phase(", phaseFuncArgs.join(), ");")
+-    for(var i=0; i<k; ++i) {
+-      forLoopEnd(i)
+-    }
+-    for(var j=0; j<arrayArgs; ++j) {
+-      code.push(pointer(j), "+=", step(j,order[k]), ";")
++    var vsprintf = function(fmt, argv, _argv) {
++        _argv = (argv || []).slice(0)
++        _argv.splice(0, 0, fmt)
++        return sprintf.apply(null, _argv)
+     }
+-  }
+ 
+-  function processGridCell(mask) {
+-    //Read in local data
+-    for(var i=0; i<arrayArgs; ++i) {
+-      if(typesig[i]) {
+-        code.push(cube(i,0), "=", data(i), ".get(", pointer(i), ");")
+-      } else {
+-        code.push(cube(i,0), "=", data(i), "[", pointer(i), "];")
+-      }
++    /**
++     * helpers
++     */
++    function get_type(variable) {
++        return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase()
+     }
+ 
+-    //Read in phase
+-    var phaseFuncArgs = []
+-    for(var i=0; i<arrayArgs; ++i) {
+-      phaseFuncArgs.push(cube(i,0))
+-    }
+-    for(var i=0; i<scalarArgs; ++i) {
+-      phaseFuncArgs.push(scalar(i))
+-    }
+-    
+-    code.push(pcube(0), "=", PHASES, "[", POINTER, "]=phase(", phaseFuncArgs.join(), ");")
+-    
+-    //Read in other cube data
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      code.push(pcube(j), "=", PHASES, "[", POINTER, "+", pdelta(j), "];")
++    function str_repeat(input, multiplier) {
++        return Array(multiplier + 1).join(input)
+     }
+ 
+-    //Check for boundary crossing
+-    var vertexPredicate = []
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      vertexPredicate.push("(" + pcube(0) + "!==" + pcube(j) + ")")
++    /**
++     * export to either browser or node.js
++     */
++    if (typeof exports !== "undefined") {
++        exports.sprintf = sprintf
++        exports.vsprintf = vsprintf
+     }
+-    code.push("if(", vertexPredicate.join("||"), "){")
++    else {
++        window.sprintf = sprintf
++        window.vsprintf = vsprintf
+ 
+-    //Read in boundary data
+-    var vertexArgs = []
+-    for(var i=0; i<dimension; ++i) {
+-      vertexArgs.push(index(i))
+-    }
+-    for(var i=0; i<arrayArgs; ++i) {
+-      vertexArgs.push(cube(i,0))
+-      for(var j=1; j<(1<<dimension); ++j) {
+-        if(typesig[i]) {
+-          code.push(cube(i,j), "=", data(i), ".get(", pointer(i), "+", delta(i,j), ");")
+-        } else {
+-          code.push(cube(i,j), "=", data(i), "[", pointer(i), "+", delta(i,j), "];")
++        if (typeof define === "function" && define.amd) {
++            define(function() {
++                return {
++                    sprintf: sprintf,
++                    vsprintf: vsprintf
++                }
++            })
+         }
+-        vertexArgs.push(cube(i,j))
+-      }
+-    }
+-    for(var i=0; i<(1<<dimension); ++i) {
+-      vertexArgs.push(pcube(i))
+-    }
+-    for(var i=0; i<scalarArgs; ++i) {
+-      vertexArgs.push(scalar(i))
+     }
++})(typeof window === "undefined" ? this : window);
+ 
+-    //Generate vertex
+-    code.push("vertex(", vertexArgs.join(), ");",
+-      vert(0), "=", VERTEX_IDS, "[", POINTER, "]=", VERTEX_COUNT, "++;")
++},{}],438:[function(require,module,exports){
++'use strict';
+ 
+-    //Check for face crossings
+-    var base = (1<<dimension)-1
+-    var corner = pcube(base)
+-    for(var j=0; j<dimension; ++j) {
+-      if((mask & ~(1<<j))===0) {
+-        //Check face
+-        var subset = base^(1<<j)
+-        var edge = pcube(subset)
+-        var faceArgs = [ ]
+-        for(var k=subset; k>0; k=(k-1)&subset) {
+-          faceArgs.push(VERTEX_IDS + "[" + POINTER + "+" + pdelta(k) + "]")
+-        }
+-        faceArgs.push(vert(0))
+-        for(var k=0; k<arrayArgs; ++k) {
+-          if(j&1) {
+-            faceArgs.push(cube(k,base), cube(k,subset))
+-          } else {
+-            faceArgs.push(cube(k,subset), cube(k,base))
+-          }
+-        }
+-        if(j&1) {
+-          faceArgs.push(corner, edge)
+-        } else {
+-          faceArgs.push(edge, corner)
+-        }
+-        for(var k=0; k<scalarArgs; ++k) {
+-          faceArgs.push(scalar(k))
++var kdbush = require('kdbush');
++
++module.exports = supercluster;
++
++function supercluster(options) {
++    return new SuperCluster(options);
++}
++
++function SuperCluster(options) {
++    this.options = extend(Object.create(this.options), options);
++    this.trees = new Array(this.options.maxZoom + 1);
++}
++
++SuperCluster.prototype = {
++    options: {
++        minZoom: 0,   // min zoom to generate clusters on
++        maxZoom: 16,  // max zoom level to cluster the points on
++        radius: 40,   // cluster radius in pixels
++        extent: 512,  // tile extent (radius is calculated relative to it)
++        nodeSize: 64, // size of the KD-tree leaf node, affects performance
++        log: false    // whether to log timing info
++    },
++
++    load: function (points) {
++        var log = this.options.log;
++
++        if (log) console.time('total time');
++
++        var timerId = 'prepare ' + points.length + ' points';
++        if (log) console.time(timerId);
++
++        this.points = points;
++
++        // generate a cluster object for each point
++        var clusters = points.map(createPointCluster);
++        if (log) console.timeEnd(timerId);
++
++        // cluster points on max zoom, then cluster the results on previous zoom, etc.;
++        // results in a cluster hierarchy across zoom levels
++        for (var z = this.options.maxZoom; z >= this.options.minZoom; z--) {
++            var now = +Date.now();
++
++            // index input points into a KD-tree
++            this.trees[z + 1] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
++
++            clusters = this._cluster(clusters, z); // create a new set of clusters for the zoom
++
++            if (log) console.log('z%d: %d clusters in %dms', z, clusters.length, +Date.now() - now);
+         }
+-        code.push("if(", corner, "!==", edge, "){",
+-          "face(", faceArgs.join(), ")}")
+-      }
+-    }
+-    
+-    //Increment pointer, close off if statement
+-    code.push("}",
+-      POINTER, "+=1;")
+-  }
+ 
+-  function flip() {
+-    for(var j=1; j<(1<<dimension); ++j) {
+-      code.push(TEMPORARY, "=", pdelta(j), ";",
+-                pdelta(j), "=", qcube(j), ";",
+-                qcube(j), "=", TEMPORARY, ";")
+-    }
+-  }
++        // index top-level clusters
++        this.trees[this.options.minZoom] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);
+ 
+-  function createLoop(i, mask) {
+-    if(i < 0) {
+-      processGridCell(mask)
+-      return
+-    }
+-    fillEmptySlice(i)
+-    code.push("if(", shape(order[i]), ">0){",
+-      index(order[i]), "=1;")
+-    createLoop(i-1, mask|(1<<order[i]))
++        if (log) console.timeEnd('total time');
+ 
+-    for(var j=0; j<arrayArgs; ++j) {
+-      code.push(pointer(j), "+=", step(j,order[i]), ";")
+-    }
+-    if(i === dimension-1) {
+-      code.push(POINTER, "=0;")
+-      flip()
+-    }
+-    forLoopBegin(i, 2)
+-    createLoop(i-1, mask)
+-    if(i === dimension-1) {
+-      code.push("if(", index(order[dimension-1]), "&1){",
+-        POINTER, "=0;}")
+-      flip()
+-    }
+-    forLoopEnd(i)
+-    code.push("}")
+-  }
++        return this;
++    },
+ 
+-  createLoop(dimension-1, 0)
++    getClusters: function (bbox, zoom) {
++        var tree = this.trees[this._limitZoom(zoom)];
++        var ids = tree.range(lngX(bbox[0]), latY(bbox[3]), lngX(bbox[2]), latY(bbox[1]));
++        var clusters = [];
++        for (var i = 0; i < ids.length; i++) {
++            var c = tree.points[ids[i]];
++            clusters.push(c.id !== -1 ? this.points[c.id] : getClusterJSON(c));
++        }
++        return clusters;
++    },
+ 
+-  //Release scratch memory
+-  code.push("freeUint32(", VERTEX_IDS, ");freeUint32(", PHASES, ");")
++    getTile: function (z, x, y) {
++        var z2 = Math.pow(2, z);
++        var extent = this.options.extent;
++        var p = this.options.radius / extent;
++        var tree = this.trees[this._limitZoom(z)];
++        var ids = tree.range(
++            (x - p) / z2,
++            (y - p) / z2,
++            (x + 1 + p) / z2,
++            (y + 1 + p) / z2);
+ 
+-  //Compile and link procedure
+-  var procedureCode = [
+-    "'use strict';",
+-    "function ", funcName, "(", args.join(), "){",
+-      "var ", vars.join(), ";",
+-      code.join(""),
+-    "}",
+-    "return ", funcName ].join("")
++        if (!ids.length) return null;
+ 
+-  var proc = new Function(
+-    "vertex", 
+-    "face", 
+-    "phase", 
+-    "mallocUint32", 
+-    "freeUint32",
+-    procedureCode)
+-  return proc(
+-    vertexFunc, 
+-    faceFunc, 
+-    phaseFunc, 
+-    pool.mallocUint32, 
+-    pool.freeUint32)
+-}
++        var tile = {
++            features: []
++        };
++        for (var i = 0; i < ids.length; i++) {
++            var c = tree.points[ids[i]];
++            var feature = {
++                type: 1,
++                geometry: [[
++                    Math.round(extent * (c.x * z2 - x)),
++                    Math.round(extent * (c.y * z2 - y))
++                ]],
++                tags: c.id !== -1 ? this.points[c.id].properties : getClusterProperties(c)
++            };
++            tile.features.push(feature);
++        }
++        return tile;
++    },
+ 
+-function createSurfaceExtractor(args) {
+-  function error(msg) {
+-    throw new Error("ndarray-extract-contour: " + msg)
+-  }
+-  if(typeof args !== "object") {
+-    error("Must specify arguments")
+-  }
+-  var order = args.order
+-  if(!Array.isArray(order)) {
+-    error("Must specify order")
+-  }
+-  var arrays = args.arrayArguments||1
+-  if(arrays < 1) {
+-    error("Must have at least one array argument")
+-  }
+-  var scalars = args.scalarArguments||0
+-  if(scalars < 0) {
+-    error("Scalar arg count must be > 0")
+-  }
+-  if(typeof args.vertex !== "function") {
+-    error("Must specify vertex creation function")
+-  }
+-  if(typeof args.cell !== "function") {
+-    error("Must specify cell creation function")
+-  }
+-  if(typeof args.phase !== "function") {
+-    error("Must specify phase function")
+-  }
+-  var getters = args.getters || []
+-  var typesig = new Array(arrays)
+-  for(var i=0; i<arrays; ++i) {
+-    if(getters.indexOf(i) >= 0) {
+-      typesig[i] = true
+-    } else {
+-      typesig[i] = false
+-    }
+-  }
+-  return compileSurfaceProcedure(
+-    args.vertex,
+-    args.cell,
+-    args.phase,
+-    scalars,
+-    order,
+-    typesig)
+-}
+-},{"typedarray-pool":458}],445:[function(require,module,exports){
+-// transliterated from the python snippet here:
+-// http://en.wikipedia.org/wiki/Lanczos_approximation
++    _limitZoom: function (z) {
++        return Math.max(this.options.minZoom, Math.min(z, this.options.maxZoom + 1));
++    },
+ 
+-var g = 7;
+-var p = [
+-    0.99999999999980993,
+-    676.5203681218851,
+-    -1259.1392167224028,
+-    771.32342877765313,
+-    -176.61502916214059,
+-    12.507343278686905,
+-    -0.13857109526572012,
+-    9.9843695780195716e-6,
+-    1.5056327351493116e-7
+-];
++    _cluster: function (points, zoom) {
++        var clusters = [];
++        var r = this.options.radius / (this.options.extent * Math.pow(2, zoom));
+ 
+-var g_ln = 607/128;
+-var p_ln = [
+-    0.99999999999999709182,
+-    57.156235665862923517,
+-    -59.597960355475491248,
+-    14.136097974741747174,
+-    -0.49191381609762019978,
+-    0.33994649984811888699e-4,
+-    0.46523628927048575665e-4,
+-    -0.98374475304879564677e-4,
+-    0.15808870322491248884e-3,
+-    -0.21026444172410488319e-3,
+-    0.21743961811521264320e-3,
+-    -0.16431810653676389022e-3,
+-    0.84418223983852743293e-4,
+-    -0.26190838401581408670e-4,
+-    0.36899182659531622704e-5
+-];
++        // loop through each point
++        for (var i = 0; i < points.length; i++) {
++            var p = points[i];
++            // if we've already visited the point at this zoom level, skip it
++            if (p.zoom <= zoom) continue;
++            p.zoom = zoom;
+ 
+-// Spouge approximation (suitable for large arguments)
+-function lngamma(z) {
++            // find all nearby points
++            var tree = this.trees[zoom + 1];
++            var neighborIds = tree.within(p.x, p.y, r);
+ 
+-    if(z < 0) return Number('0/0');
+-    var x = p_ln[0];
+-    for(var i = p_ln.length - 1; i > 0; --i) x += p_ln[i] / (z + i);
+-    var t = z + g_ln + 0.5;
+-    return .5*Math.log(2*Math.PI)+(z+.5)*Math.log(t)-t+Math.log(x)-Math.log(z);
+-}
++            var foundNeighbors = false;
++            var numPoints = p.numPoints;
++            var wx = p.x * numPoints;
++            var wy = p.y * numPoints;
+ 
+-module.exports = function gamma (z) {
+-    if (z < 0.5) {
+-        return Math.PI / (Math.sin(Math.PI * z) * gamma(1 - z));
+-    }
+-    else if(z > 100) return Math.exp(lngamma(z));
+-    else {
+-        z -= 1;
+-        var x = p[0];
+-        for (var i = 1; i < g + 2; i++) {
+-            x += p[i] / (z + i);
++            for (var j = 0; j < neighborIds.length; j++) {
++                var b = tree.points[neighborIds[j]];
++                // filter out neighbors that are too far or already processed
++                if (zoom < b.zoom) {
++                    foundNeighbors = true;
++                    b.zoom = zoom; // save the zoom (so it doesn't get processed twice)
++                    wx += b.x * b.numPoints; // accumulate coordinates for calculating weighted center
++                    wy += b.y * b.numPoints;
++                    numPoints += b.numPoints;
++                }
++            }
++
++            clusters.push(foundNeighbors ? createCluster(wx / numPoints, wy / numPoints, numPoints, -1) : p);
+         }
+-        var t = z + g + 0.5;
+ 
+-        return Math.sqrt(2 * Math.PI)
+-            * Math.pow(t, z + 0.5)
+-            * Math.exp(-t)
+-            * x
+-        ;
++        return clusters;
+     }
+ };
+ 
+-module.exports.log = lngamma;
+-
+-},{}],446:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = permutationSign
+-
+-var BRUTE_FORCE_CUTOFF = 32
++function createCluster(x, y, numPoints, id) {
++    return {
++        x: x, // weighted cluster center
++        y: y,
++        zoom: Infinity, // the last zoom the cluster was processed at
++        id: id, // index of the source feature in the original input array
++        numPoints: numPoints
++    };
++}
+ 
+-var pool = require("typedarray-pool")
++function createPointCluster(p, i) {
++    var coords = p.geometry.coordinates;
++    return createCluster(lngX(coords[0]), latY(coords[1]), 1, i);
++}
+ 
+-function permutationSign(p) {
+-  var n = p.length
+-  if(n < BRUTE_FORCE_CUTOFF) {
+-    //Use quadratic algorithm for small n
+-    var sgn = 1
+-    for(var i=0; i<n; ++i) {
+-      for(var j=0; j<i; ++j) {
+-        if(p[i] < p[j]) {
+-          sgn = -sgn
+-        } else if(p[i] === p[j]) {
+-          return 0
+-        }
+-      }
+-    }
+-    return sgn
+-  } else {
+-    //Otherwise use linear time algorithm
+-    var visited = pool.mallocUint8(n)
+-    for(var i=0; i<n; ++i) {
+-      visited[i] = 0
+-    }
+-    var sgn = 1
+-    for(var i=0; i<n; ++i) {
+-      if(!visited[i]) {
+-        var count = 1
+-        visited[i] = 1
+-        for(var j=p[i]; j!==i; j=p[j]) {
+-          if(visited[j]) {
+-            pool.freeUint8(visited)
+-            return 0
+-          }
+-          count += 1
+-          visited[j] = 1
+-        }
+-        if(!(count & 1)) {
+-          sgn = -sgn
++function getClusterJSON(cluster) {
++    return {
++        type: 'Feature',
++        properties: getClusterProperties(cluster),
++        geometry: {
++            type: 'Point',
++            coordinates: [xLng(cluster.x), yLat(cluster.y)]
+         }
+-      }
+-    }
+-    pool.freeUint8(visited)
+-    return sgn
+-  }
++    };
+ }
+-},{"typedarray-pool":458}],447:[function(require,module,exports){
+-"use strict"
+-
+-var pool = require("typedarray-pool")
+-var inverse = require("invert-permutation")
+ 
+-function rank(permutation) {
+-  var n = permutation.length
+-  switch(n) {
+-    case 0:
+-    case 1:
+-      return 0
+-    case 2:
+-      return permutation[1]
+-    default:
+-      break
+-  }
+-  var p = pool.mallocUint32(n)
+-  var pinv = pool.mallocUint32(n)
+-  var r = 0, s, t, i
+-  inverse(permutation, pinv)
+-  for(i=0; i<n; ++i) {
+-    p[i] = permutation[i]
+-  }
+-  for(i=n-1; i>0; --i) {
+-    t = pinv[i]
+-    s = p[i]
+-    p[i] = p[t]
+-    p[t] = s
+-    pinv[i] = pinv[s]
+-    pinv[s] = t
+-    r = (r + s) * i
+-  }
+-  pool.freeUint32(pinv)
+-  pool.freeUint32(p)
+-  return r
++function getClusterProperties(cluster) {
++    var count = cluster.numPoints;
++    var abbrev = count >= 10000 ? Math.round(count / 1000) + 'k' :
++                 count >= 1000 ? (Math.round(count / 100) / 10) + 'k' : count;
++    return {
++        cluster: true,
++        point_count: count,
++        point_count_abbreviated: abbrev
++    };
+ }
+ 
+-function unrank(n, r, p) {
+-  switch(n) {
+-    case 0:
+-      if(p) { return p }
+-      return []
+-    case 1:
+-      if(p) {
+-        p[0] = 0
+-        return p
+-      } else {
+-        return [0]
+-      }
+-    case 2:
+-      if(p) {
+-        if(r) {
+-          p[0] = 0
+-          p[1] = 1
+-        } else {
+-          p[0] = 1
+-          p[1] = 0
+-        }
+-        return p
+-      } else {
+-        return r ? [0,1] : [1,0]
+-      }
+-    default:
+-      break
+-  }
+-  p = p || new Array(n)
+-  var s, t, i, nf=1
+-  p[0] = 0
+-  for(i=1; i<n; ++i) {
+-    p[i] = i
+-    nf = (nf*i)|0
+-  }
+-  for(i=n-1; i>0; --i) {
+-    s = (r / nf)|0
+-    r = (r - s * nf)|0
+-    nf = (nf / i)|0
+-    t = p[i]|0
+-    p[i] = p[s]|0
+-    p[s] = t|0
+-  }
+-  return p
++// longitude/latitude to spherical mercator in [0..1] range
++function lngX(lng) {
++    return lng / 360 + 0.5;
++}
++function latY(lat) {
++    var sin = Math.sin(lat * Math.PI / 180),
++        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
++    return y < 0 ? 0 :
++           y > 1 ? 1 : y;
+ }
+ 
+-exports.rank = rank
+-exports.unrank = unrank
++// spherical mercator to longitude/latitude
++function xLng(x) {
++    return (x - 0.5) * 360;
++}
++function yLat(y) {
++    var y2 = (180 - y * 360) * Math.PI / 180;
++    return 360 * Math.atan(Math.exp(y2)) / Math.PI - 90;
++}
+ 
+-},{"invert-permutation":448,"typedarray-pool":458}],448:[function(require,module,exports){
+-"use strict"
++function extend(dest, src) {
++    for (var id in src) dest[id] = src[id];
++    return dest;
++}
+ 
+-function invertPermutation(pi, result) {
+-  result = result || new Array(pi.length)
+-  for(var i=0; i<pi.length; ++i) {
+-    result[pi[i]] = i
+-  }
+-  return result
++function getX(p) {
++    return p.x;
++}
++function getY(p) {
++    return p.y;
+ }
+ 
+-module.exports = invertPermutation
+-},{}],449:[function(require,module,exports){
+-"use strict"
++},{"kdbush":229}],439:[function(require,module,exports){
++'use strict'
+ 
+-module.exports = triangulateCube
++module.exports = toSuperScript
+ 
+-var perm = require("permutation-rank")
+-var sgn = require("permutation-parity")
+-var gamma = require("gamma")
++var SUPERSCRIPTS = {
++  ' ': ' ',
++  '0': '⁰',
++  '1': '¹',
++  '2': '²',
++  '3': '³',
++  '4': '⁴',
++  '5': '⁵',
++  '6': '⁶',
++  '7': '⁷',
++  '8': '⁸',
++  '9': '⁹',
++  '+': '⁺',
++  '-': '⁻',
++  'a': 'ᵃ',
++  'b': 'ᵇ',
++  'c': 'ᶜ',
++  'd': 'ᵈ',
++  'e': 'ᵉ',
++  'f': 'ᶠ',
++  'g': 'ᵍ',
++  'h': 'ʰ',
++  'i': 'ⁱ',
++  'j': 'ʲ',
++  'k': 'ᵏ',
++  'l': 'ˡ',
++  'm': 'ᵐ',
++  'n': 'ⁿ',
++  'o': 'ᵒ',
++  'p': 'ᵖ',
++  'r': 'ʳ',
++  's': 'ˢ',
++  't': 'ᵗ',
++  'u': 'ᵘ',
++  'v': 'ᵛ',
++  'w': 'ʷ',
++  'x': 'ˣ',
++  'y': 'ʸ',
++  'z': 'ᶻ'
++}
+ 
+-function triangulateCube(dimension) {
+-  if(dimension < 0) {
+-    return [ ]
+-  }
+-  if(dimension === 0) {
+-    return [ [0] ]
+-  }
+-  var dfactorial = Math.round(gamma(dimension+1))|0
+-  var result = []
+-  for(var i=0; i<dfactorial; ++i) {
+-    var p = perm.unrank(dimension, i)
+-    var cell = [ 0 ]
+-    var v = 0
+-    for(var j=0; j<p.length; ++j) {
+-      v += (1<<p[j])
+-      cell.push(v)
+-    }
+-    if(sgn(p) < 1) {
+-      cell[0] = v
+-      cell[dimension] = 0
++function toSuperScript(x) {
++  return x.split('').map(function(c) {
++    if(c in SUPERSCRIPTS) {
++      return SUPERSCRIPTS[c]
+     }
+-    result.push(cell)
+-  }
+-  return result
++    return ''
++  }).join('')
+ }
+-},{"gamma":445,"permutation-parity":446,"permutation-rank":447}],450:[function(require,module,exports){
+-module.exports = require('cwise-compiler')({
+-    args: ['array', {
+-        offset: [1],
+-        array: 0
+-    }, 'scalar', 'scalar', 'index'],
+-    pre: {
+-        "body": "{}",
+-        "args": [],
+-        "thisVars": [],
+-        "localVars": []
+-    },
+-    post: {
+-        "body": "{}",
+-        "args": [],
+-        "thisVars": [],
+-        "localVars": []
+-    },
+-    body: {
+-        "body": "{\n        var _inline_1_da = _inline_1_arg0_ - _inline_1_arg3_\n        var _inline_1_db = _inline_1_arg1_ - _inline_1_arg3_\n        if((_inline_1_da >= 0) !== (_inline_1_db >= 0)) {\n          _inline_1_arg2_.push(_inline_1_arg4_[0] + 0.5 + 0.5 * (_inline_1_da + _inline_1_db) / (_inline_1_da - _inline_1_db))\n        }\n      }",
+-        "args": [{
+-            "name": "_inline_1_arg0_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg1_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg2_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }, {
+-            "name": "_inline_1_arg3_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 2
+-        }, {
+-            "name": "_inline_1_arg4_",
+-            "lvalue": false,
+-            "rvalue": true,
+-            "count": 1
+-        }],
+-        "thisVars": [],
+-        "localVars": ["_inline_1_da", "_inline_1_db"]
+-    },
+-    funcName: 'zeroCrossings'
+-})
+-
+-},{"cwise-compiler":115}],451:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = findZeroCrossings
+-
+-var core = require("./lib/zc-core")
+-
+-function findZeroCrossings(array, level) {
+-  var cross = []
+-  level = +level || 0.0
+-  core(array.hi(array.shape[0]-1), cross, level)
+-  return cross
+-}
+-},{"./lib/zc-core":450}],452:[function(require,module,exports){
++},{}],440:[function(require,module,exports){
+ "use strict"
+ 
+ module.exports = surfaceNets
+@@ -75913,7 +77332,7 @@ function surfaceNets(array,level) {
+   }
+   return proc(array,level)
+ }
+-},{"ndarray-extract-contour":444,"triangulate-hypercube":449,"zero-crossings":451}],453:[function(require,module,exports){
++},{"ndarray-extract-contour":374,"triangulate-hypercube":445,"zero-crossings":472}],441:[function(require,module,exports){
+ (function (process){
+ 'use strict'
+ 
+@@ -76002,21 +77421,20 @@ function textGet(font, text) {
+ }
+ 
+ }).call(this,require('_process'))
+-},{"_process":60,"vectorize-text":460}],454:[function(require,module,exports){
+-// TinyColor v1.3.0
++},{"_process":403,"vectorize-text":460}],442:[function(require,module,exports){
++// TinyColor v1.4.1
+ // https://github.com/bgrins/TinyColor
+ // Brian Grinstead, MIT License
+ 
+-(function() {
++(function(Math) {
+ 
+ var trimLeft = /^\s+/,
+     trimRight = /\s+$/,
+     tinyCounter = 0,
+-    math = Math,
+-    mathRound = math.round,
+-    mathMin = math.min,
+-    mathMax = math.max,
+-    mathRandom = math.random;
++    mathRound = Math.round,
++    mathMin = Math.min,
++    mathMax = Math.max,
++    mathRandom = Math.random;
+ 
+ function tinycolor (color, opts) {
+ 
+@@ -76124,11 +77542,11 @@ tinycolor.prototype = {
+     toHexString: function(allow3Char) {
+         return '#' + this.toHex(allow3Char);
+     },
+-    toHex8: function() {
+-        return rgbaToHex(this._r, this._g, this._b, this._a);
++    toHex8: function(allow4Char) {
++        return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
+     },
+-    toHex8String: function() {
+-        return '#' + this.toHex8();
++    toHex8String: function(allow4Char) {
++        return '#' + this.toHex8(allow4Char);
+     },
+     toRgb: function() {
+         return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
+@@ -76158,13 +77576,13 @@ tinycolor.prototype = {
+         return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
+     },
+     toFilter: function(secondColor) {
+-        var hex8String = '#' + rgbaToHex(this._r, this._g, this._b, this._a);
++        var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
+         var secondHex8String = hex8String;
+         var gradientType = this._gradientType ? "GradientType = 1, " : "";
+ 
+         if (secondColor) {
+             var s = tinycolor(secondColor);
+-            secondHex8String = s.toHex8String();
++            secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
+         }
+ 
+         return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
+@@ -76175,7 +77593,7 @@ tinycolor.prototype = {
+ 
+         var formattedString = false;
+         var hasAlpha = this._a < 1 && this._a >= 0;
+-        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "name");
++        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");
+ 
+         if (needsAlphaFormat) {
+             // Special case for "transparent", all other non-alpha formats
+@@ -76197,6 +77615,9 @@ tinycolor.prototype = {
+         if (format === "hex3") {
+             formattedString = this.toHexString(true);
+         }
++        if (format === "hex4") {
++            formattedString = this.toHex8String(true);
++        }
+         if (format === "hex8") {
+             formattedString = this.toHex8String();
+         }
+@@ -76309,6 +77730,9 @@ function inputToRGB(color) {
+ 
+     var rgb = { r: 0, g: 0, b: 0 };
+     var a = 1;
++    var s = null;
++    var v = null;
++    var l = null;
+     var ok = false;
+     var format = false;
+ 
+@@ -76317,22 +77741,22 @@ function inputToRGB(color) {
+     }
+ 
+     if (typeof color == "object") {
+-        if (color.hasOwnProperty("r") && color.hasOwnProperty("g") && color.hasOwnProperty("b")) {
++        if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
+             rgb = rgbToRgb(color.r, color.g, color.b);
+             ok = true;
+             format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
+         }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("v")) {
+-            color.s = convertToPercentage(color.s);
+-            color.v = convertToPercentage(color.v);
+-            rgb = hsvToRgb(color.h, color.s, color.v);
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
++            s = convertToPercentage(color.s);
++            v = convertToPercentage(color.v);
++            rgb = hsvToRgb(color.h, s, v);
+             ok = true;
+             format = "hsv";
+         }
+-        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("l")) {
+-            color.s = convertToPercentage(color.s);
+-            color.l = convertToPercentage(color.l);
+-            rgb = hslToRgb(color.h, color.s, color.l);
++        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
++            s = convertToPercentage(color.s);
++            l = convertToPercentage(color.l);
++            rgb = hslToRgb(color.h, s, l);
+             ok = true;
+             format = "hsl";
+         }
+@@ -76479,7 +77903,7 @@ function rgbToHsv(r, g, b) {
+     s = bound01(s, 100);
+     v = bound01(v, 100);
+ 
+-    var i = math.floor(h),
++    var i = Math.floor(h),
+         f = h - i,
+         p = v * (1 - s),
+         q = v * (1 - f * s),
+@@ -76514,9 +77938,29 @@ function rgbToHex(r, g, b, allow3Char) {
+ 
+ // `rgbaToHex`
+ // Converts an RGBA color plus alpha transparency to hex
+-// Assumes r, g, b and a are contained in the set [0, 255]
+-// Returns an 8 character hex
+-function rgbaToHex(r, g, b, a) {
++// Assumes r, g, b are contained in the set [0, 255] and
++// a in [0, 1]. Returns a 4 or 8 character rgba hex
++function rgbaToHex(r, g, b, a, allow4Char) {
++
++    var hex = [
++        pad2(mathRound(r).toString(16)),
++        pad2(mathRound(g).toString(16)),
++        pad2(mathRound(b).toString(16)),
++        pad2(convertDecimalToHex(a))
++    ];
++
++    // Return a 4 character hex if possible
++    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
++        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
++    }
++
++    return hex.join("");
++}
++
++// `rgbaToArgbHex`
++// Converts an RGBA color to an ARGB Hex8 string
++// Rarely used, but required for "toFilter()"
++function rgbaToArgbHex(r, g, b, a) {
+ 
+     var hex = [
+         pad2(convertDecimalToHex(a)),
+@@ -76598,7 +78042,7 @@ function darken (color, amount) {
+ // Values outside of this range will be wrapped into this range.
+ function spin(color, amount) {
+     var hsl = tinycolor(color).toHsl();
+-    var hue = (mathRound(hsl.h) + amount) % 360;
++    var hue = (hsl.h + amount) % 360;
+     hsl.h = hue < 0 ? 360 + hue : hue;
+     return tinycolor(hsl);
+ }
+@@ -76685,26 +78129,12 @@ tinycolor.mix = function(color1, color2, amount) {
+     var rgb2 = tinycolor(color2).toRgb();
+ 
+     var p = amount / 100;
+-    var w = p * 2 - 1;
+-    var a = rgb2.a - rgb1.a;
+-
+-    var w1;
+-
+-    if (w * a == -1) {
+-        w1 = w;
+-    } else {
+-        w1 = (w + a) / (1 + w * a);
+-    }
+-
+-    w1 = (w1 + 1) / 2;
+-
+-    var w2 = 1 - w1;
+ 
+     var rgba = {
+-        r: rgb2.r * w1 + rgb1.r * w2,
+-        g: rgb2.g * w1 + rgb1.g * w2,
+-        b: rgb2.b * w1 + rgb1.b * w2,
+-        a: rgb2.a * p  + rgb1.a * (1 - p)
++        r: ((rgb2.r - rgb1.r) * p) + rgb1.r,
++        g: ((rgb2.g - rgb1.g) * p) + rgb1.g,
++        b: ((rgb2.b - rgb1.b) * p) + rgb1.b,
++        a: ((rgb2.a - rgb1.a) * p) + rgb1.a
+     };
+ 
+     return tinycolor(rgba);
+@@ -76990,7 +78420,7 @@ function bound01(n, max) {
+     }
+ 
+     // Handle floating point rounding errors
+-    if ((math.abs(n - max) < 0.000001)) {
++    if ((Math.abs(n - max) < 0.000001)) {
+         return 1;
+     }
+ 
+@@ -77060,6 +78490,7 @@ var matchers = (function() {
+     var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+ 
+     return {
++        CSS_UNIT: new RegExp(CSS_UNIT),
+         rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
+         rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
+         hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
+@@ -77068,10 +78499,18 @@ var matchers = (function() {
+         hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
+         hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+         hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
++        hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+         hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
+     };
+ })();
+ 
++// `isValidCSSUnit`
++// Take in a single string / number and check to see if it looks like a CSS unit
++// (see `matchers` above for definition).
++function isValidCSSUnit(color) {
++    return !!matchers.CSS_UNIT.exec(color);
++}
++
+ // `stringInputToObject`
+ // Permissive string parsing.  Take in a number of formats, and output an object
+ // based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
+@@ -77112,10 +78551,10 @@ function stringInputToObject(color) {
+     }
+     if ((match = matchers.hex8.exec(color))) {
+         return {
+-            a: convertHexToDecimal(match[1]),
+-            r: parseIntFromHex(match[2]),
+-            g: parseIntFromHex(match[3]),
+-            b: parseIntFromHex(match[4]),
++            r: parseIntFromHex(match[1]),
++            g: parseIntFromHex(match[2]),
++            b: parseIntFromHex(match[3]),
++            a: convertHexToDecimal(match[4]),
+             format: named ? "name" : "hex8"
+         };
+     }
+@@ -77127,6 +78566,15 @@ function stringInputToObject(color) {
+             format: named ? "name" : "hex"
+         };
+     }
++    if ((match = matchers.hex4.exec(color))) {
++        return {
++            r: parseIntFromHex(match[1] + '' + match[1]),
++            g: parseIntFromHex(match[2] + '' + match[2]),
++            b: parseIntFromHex(match[3] + '' + match[3]),
++            a: convertHexToDecimal(match[4] + '' + match[4]),
++            format: named ? "name" : "hex8"
++        };
++    }
+     if ((match = matchers.hex3.exec(color))) {
+         return {
+             r: parseIntFromHex(match[1] + '' + match[1]),
+@@ -77155,571 +78603,1238 @@ function validateWCAG2Parms(parms) {
+     return {"level":level, "size":size};
+ }
+ 
+-// Node: Export function
+-if (typeof module !== "undefined" && module.exports) {
+-    module.exports = tinycolor;
+-}
+-// AMD/requirejs: Define the module
+-else if (typeof define === 'function' && define.amd) {
+-    define(function () {return tinycolor;});
++// Node: Export function
++if (typeof module !== "undefined" && module.exports) {
++    module.exports = tinycolor;
++}
++// AMD/requirejs: Define the module
++else if (typeof define === 'function' && define.amd) {
++    define(function () {return tinycolor;});
++}
++// Browser: Expose to window
++else {
++    window.tinycolor = tinycolor;
++}
++
++})(Math);
++
++},{}],443:[function(require,module,exports){
++'use strict'
++
++var parseUnit = require('parse-unit')
++
++module.exports = toPX
++
++var PIXELS_PER_INCH = 96
++
++function getPropertyInPX(element, prop) {
++  var parts = parseUnit(getComputedStyle(element).getPropertyValue(prop))
++  return parts[0] * toPX(parts[1], element)
++}
++
++//This brutal hack is needed
++function getSizeBrutal(unit, element) {
++  var testDIV = document.createElement('div')
++  testDIV.style['font-size'] = '128' + unit
++  element.appendChild(testDIV)
++  var size = getPropertyInPX(testDIV, 'font-size') / 128
++  element.removeChild(testDIV)
++  return size
++}
++
++function toPX(str, element) {
++  element = element || document.body
++  str = (str || 'px').trim().toLowerCase()
++  if(element === window || element === document) {
++    element = document.body 
++  }
++  switch(str) {
++    case '%':  //Ambiguous, not sure if we should use width or height
++      return element.clientHeight / 100.0
++    case 'ch':
++    case 'ex':
++      return getSizeBrutal(str, element)
++    case 'em':
++      return getPropertyInPX(element, 'font-size')
++    case 'rem':
++      return getPropertyInPX(document.body, 'font-size')
++    case 'vw':
++      return window.innerWidth/100
++    case 'vh':
++      return window.innerHeight/100
++    case 'vmin':
++      return Math.min(window.innerWidth, window.innerHeight) / 100
++    case 'vmax':
++      return Math.max(window.innerWidth, window.innerHeight) / 100
++    case 'in':
++      return PIXELS_PER_INCH
++    case 'cm':
++      return PIXELS_PER_INCH / 2.54
++    case 'mm':
++      return PIXELS_PER_INCH / 25.4
++    case 'pt':
++      return PIXELS_PER_INCH / 72
++    case 'pc':
++      return PIXELS_PER_INCH / 6
++  }
++  return 1
++}
++},{"parse-unit":391}],444:[function(require,module,exports){
++(function (global, factory) {
++  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
++  typeof define === 'function' && define.amd ? define(['exports'], factory) :
++  (factory((global.topojson = global.topojson || {})));
++}(this, (function (exports) { 'use strict';
++
++function noop() {}
++
++function transformAbsolute(transform) {
++  if (!transform) return noop;
++  var x0,
++      y0,
++      kx = transform.scale[0],
++      ky = transform.scale[1],
++      dx = transform.translate[0],
++      dy = transform.translate[1];
++  return function(point, i) {
++    if (!i) x0 = y0 = 0;
++    point[0] = (x0 += point[0]) * kx + dx;
++    point[1] = (y0 += point[1]) * ky + dy;
++  };
++}
++
++function transformRelative(transform) {
++  if (!transform) return noop;
++  var x0,
++      y0,
++      kx = transform.scale[0],
++      ky = transform.scale[1],
++      dx = transform.translate[0],
++      dy = transform.translate[1];
++  return function(point, i) {
++    if (!i) x0 = y0 = 0;
++    var x1 = Math.round((point[0] - dx) / kx),
++        y1 = Math.round((point[1] - dy) / ky);
++    point[0] = x1 - x0;
++    point[1] = y1 - y0;
++    x0 = x1;
++    y0 = y1;
++  };
++}
++
++function reverse(array, n) {
++  var t, j = array.length, i = j - n;
++  while (i < --j) t = array[i], array[i++] = array[j], array[j] = t;
++}
++
++function bisect(a, x) {
++  var lo = 0, hi = a.length;
++  while (lo < hi) {
++    var mid = lo + hi >>> 1;
++    if (a[mid] < x) lo = mid + 1;
++    else hi = mid;
++  }
++  return lo;
++}
++
++function feature(topology, o) {
++  return o.type === "GeometryCollection" ? {
++    type: "FeatureCollection",
++    features: o.geometries.map(function(o) { return feature$1(topology, o); })
++  } : feature$1(topology, o);
++}
++
++function feature$1(topology, o) {
++  var f = {
++    type: "Feature",
++    id: o.id,
++    properties: o.properties || {},
++    geometry: object(topology, o)
++  };
++  if (o.id == null) delete f.id;
++  return f;
++}
++
++function object(topology, o) {
++  var absolute = transformAbsolute(topology.transform),
++      arcs = topology.arcs;
++
++  function arc(i, points) {
++    if (points.length) points.pop();
++    for (var a = arcs[i < 0 ? ~i : i], k = 0, n = a.length, p; k < n; ++k) {
++      points.push(p = a[k].slice());
++      absolute(p, k);
++    }
++    if (i < 0) reverse(points, n);
++  }
++
++  function point(p) {
++    p = p.slice();
++    absolute(p, 0);
++    return p;
++  }
++
++  function line(arcs) {
++    var points = [];
++    for (var i = 0, n = arcs.length; i < n; ++i) arc(arcs[i], points);
++    if (points.length < 2) points.push(points[0].slice());
++    return points;
++  }
++
++  function ring(arcs) {
++    var points = line(arcs);
++    while (points.length < 4) points.push(points[0].slice());
++    return points;
++  }
++
++  function polygon(arcs) {
++    return arcs.map(ring);
++  }
++
++  function geometry(o) {
++    var t = o.type;
++    return t === "GeometryCollection" ? {type: t, geometries: o.geometries.map(geometry)}
++        : t in geometryType ? {type: t, coordinates: geometryType[t](o)}
++        : null;
++  }
++
++  var geometryType = {
++    Point: function(o) { return point(o.coordinates); },
++    MultiPoint: function(o) { return o.coordinates.map(point); },
++    LineString: function(o) { return line(o.arcs); },
++    MultiLineString: function(o) { return o.arcs.map(line); },
++    Polygon: function(o) { return polygon(o.arcs); },
++    MultiPolygon: function(o) { return o.arcs.map(polygon); }
++  };
++
++  return geometry(o);
++}
++
++function stitchArcs(topology, arcs) {
++  var stitchedArcs = {},
++      fragmentByStart = {},
++      fragmentByEnd = {},
++      fragments = [],
++      emptyIndex = -1;
++
++  // Stitch empty arcs first, since they may be subsumed by other arcs.
++  arcs.forEach(function(i, j) {
++    var arc = topology.arcs[i < 0 ? ~i : i], t;
++    if (arc.length < 3 && !arc[1][0] && !arc[1][1]) {
++      t = arcs[++emptyIndex], arcs[emptyIndex] = i, arcs[j] = t;
++    }
++  });
++
++  arcs.forEach(function(i) {
++    var e = ends(i),
++        start = e[0],
++        end = e[1],
++        f, g;
++
++    if (f = fragmentByEnd[start]) {
++      delete fragmentByEnd[f.end];
++      f.push(i);
++      f.end = end;
++      if (g = fragmentByStart[end]) {
++        delete fragmentByStart[g.start];
++        var fg = g === f ? f : f.concat(g);
++        fragmentByStart[fg.start = f.start] = fragmentByEnd[fg.end = g.end] = fg;
++      } else {
++        fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
++      }
++    } else if (f = fragmentByStart[end]) {
++      delete fragmentByStart[f.start];
++      f.unshift(i);
++      f.start = start;
++      if (g = fragmentByEnd[start]) {
++        delete fragmentByEnd[g.end];
++        var gf = g === f ? f : g.concat(f);
++        fragmentByStart[gf.start = g.start] = fragmentByEnd[gf.end = f.end] = gf;
++      } else {
++        fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
++      }
++    } else {
++      f = [i];
++      fragmentByStart[f.start = start] = fragmentByEnd[f.end = end] = f;
++    }
++  });
++
++  function ends(i) {
++    var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
++    if (topology.transform) p1 = [0, 0], arc.forEach(function(dp) { p1[0] += dp[0], p1[1] += dp[1]; });
++    else p1 = arc[arc.length - 1];
++    return i < 0 ? [p1, p0] : [p0, p1];
++  }
++
++  function flush(fragmentByEnd, fragmentByStart) {
++    for (var k in fragmentByEnd) {
++      var f = fragmentByEnd[k];
++      delete fragmentByStart[f.start];
++      delete f.start;
++      delete f.end;
++      f.forEach(function(i) { stitchedArcs[i < 0 ? ~i : i] = 1; });
++      fragments.push(f);
++    }
++  }
++
++  flush(fragmentByEnd, fragmentByStart);
++  flush(fragmentByStart, fragmentByEnd);
++  arcs.forEach(function(i) { if (!stitchedArcs[i < 0 ? ~i : i]) fragments.push([i]); });
++
++  return fragments;
+ }
+-// Browser: Expose to window
+-else {
+-    window.tinycolor = tinycolor;
++
++function mesh(topology) {
++  return object(topology, meshArcs.apply(this, arguments));
+ }
+ 
+-})();
++function meshArcs(topology, o, filter) {
++  var arcs = [];
+ 
+-},{}],455:[function(require,module,exports){
+-(function (global, factory) {
+-  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+-  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+-  (factory((global.topojson = {})));
+-}(this, function (exports) { 'use strict';
++  function arc(i) {
++    var j = i < 0 ? ~i : i;
++    (geomsByArc[j] || (geomsByArc[j] = [])).push({i: i, g: geom});
++  }
+ 
+-  function noop() {}
++  function line(arcs) {
++    arcs.forEach(arc);
++  }
+ 
+-  function absolute(transform) {
+-    if (!transform) return noop;
+-    var x0,
+-        y0,
+-        kx = transform.scale[0],
+-        ky = transform.scale[1],
+-        dx = transform.translate[0],
+-        dy = transform.translate[1];
+-    return function(point, i) {
+-      if (!i) x0 = y0 = 0;
+-      point[0] = (x0 += point[0]) * kx + dx;
+-      point[1] = (y0 += point[1]) * ky + dy;
+-    };
++  function polygon(arcs) {
++    arcs.forEach(line);
+   }
+ 
+-  function relative(transform) {
+-    if (!transform) return noop;
+-    var x0,
+-        y0,
+-        kx = transform.scale[0],
+-        ky = transform.scale[1],
+-        dx = transform.translate[0],
+-        dy = transform.translate[1];
+-    return function(point, i) {
+-      if (!i) x0 = y0 = 0;
+-      var x1 = (point[0] - dx) / kx | 0,
+-          y1 = (point[1] - dy) / ky | 0;
+-      point[0] = x1 - x0;
+-      point[1] = y1 - y0;
+-      x0 = x1;
+-      y0 = y1;
++  function geometry(o) {
++    if (o.type === "GeometryCollection") o.geometries.forEach(geometry);
++    else if (o.type in geometryType) geom = o, geometryType[o.type](o.arcs);
++  }
++
++  if (arguments.length > 1) {
++    var geomsByArc = [],
++        geom;
++
++    var geometryType = {
++      LineString: line,
++      MultiLineString: polygon,
++      Polygon: polygon,
++      MultiPolygon: function(arcs) { arcs.forEach(polygon); }
+     };
++
++    geometry(o);
++
++    geomsByArc.forEach(arguments.length < 3
++        ? function(geoms) { arcs.push(geoms[0].i); }
++        : function(geoms) { if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs.push(geoms[0].i); });
++  } else {
++    for (var i = 0, n = topology.arcs.length; i < n; ++i) arcs.push(i);
+   }
+ 
+-  function reverse(array, n) {
+-    var t, j = array.length, i = j - n;
+-    while (i < --j) t = array[i], array[i++] = array[j], array[j] = t;
++  return {type: "MultiLineString", arcs: stitchArcs(topology, arcs)};
++}
++
++function cartesianTriangleArea(triangle) {
++  var a = triangle[0], b = triangle[1], c = triangle[2];
++  return Math.abs((a[0] - c[0]) * (b[1] - a[1]) - (a[0] - b[0]) * (c[1] - a[1]));
++}
++
++function ring(ring) {
++  var i = -1,
++      n = ring.length,
++      a,
++      b = ring[n - 1],
++      area = 0;
++
++  while (++i < n) {
++    a = b;
++    b = ring[i];
++    area += a[0] * b[1] - a[1] * b[0];
+   }
+ 
+-  function bisect(a, x) {
+-    var lo = 0, hi = a.length;
+-    while (lo < hi) {
+-      var mid = lo + hi >>> 1;
+-      if (a[mid] < x) lo = mid + 1;
+-      else hi = mid;
++  return area / 2;
++}
++
++function merge(topology) {
++  return object(topology, mergeArcs.apply(this, arguments));
++}
++
++function mergeArcs(topology, objects) {
++  var polygonsByArc = {},
++      polygons = [],
++      components = [];
++
++  objects.forEach(function(o) {
++    if (o.type === "Polygon") register(o.arcs);
++    else if (o.type === "MultiPolygon") o.arcs.forEach(register);
++  });
++
++  function register(polygon) {
++    polygon.forEach(function(ring$$) {
++      ring$$.forEach(function(arc) {
++        (polygonsByArc[arc = arc < 0 ? ~arc : arc] || (polygonsByArc[arc] = [])).push(polygon);
++      });
++    });
++    polygons.push(polygon);
++  }
++
++  function area(ring$$) {
++    return Math.abs(ring(object(topology, {type: "Polygon", arcs: [ring$$]}).coordinates[0]));
++  }
++
++  polygons.forEach(function(polygon) {
++    if (!polygon._) {
++      var component = [],
++          neighbors = [polygon];
++      polygon._ = 1;
++      components.push(component);
++      while (polygon = neighbors.pop()) {
++        component.push(polygon);
++        polygon.forEach(function(ring$$) {
++          ring$$.forEach(function(arc) {
++            polygonsByArc[arc < 0 ? ~arc : arc].forEach(function(polygon) {
++              if (!polygon._) {
++                polygon._ = 1;
++                neighbors.push(polygon);
++              }
++            });
++          });
++        });
++      }
+     }
+-    return lo;
++  });
++
++  polygons.forEach(function(polygon) {
++    delete polygon._;
++  });
++
++  return {
++    type: "MultiPolygon",
++    arcs: components.map(function(polygons) {
++      var arcs = [], n;
++
++      // Extract the exterior (unique) arcs.
++      polygons.forEach(function(polygon) {
++        polygon.forEach(function(ring$$) {
++          ring$$.forEach(function(arc) {
++            if (polygonsByArc[arc < 0 ? ~arc : arc].length < 2) {
++              arcs.push(arc);
++            }
++          });
++        });
++      });
++
++      // Stitch the arcs into one or more rings.
++      arcs = stitchArcs(topology, arcs);
++
++      // If more than one ring is returned,
++      // at most one of these rings can be the exterior;
++      // choose the one with the greatest absolute area.
++      if ((n = arcs.length) > 1) {
++        for (var i = 1, k = area(arcs[0]), ki, t; i < n; ++i) {
++          if ((ki = area(arcs[i])) > k) {
++            t = arcs[0], arcs[0] = arcs[i], arcs[i] = t, k = ki;
++          }
++        }
++      }
++
++      return arcs;
++    })
++  };
++}
++
++function neighbors(objects) {
++  var indexesByArc = {}, // arc index -> array of object indexes
++      neighbors = objects.map(function() { return []; });
++
++  function line(arcs, i) {
++    arcs.forEach(function(a) {
++      if (a < 0) a = ~a;
++      var o = indexesByArc[a];
++      if (o) o.push(i);
++      else indexesByArc[a] = [i];
++    });
+   }
+ 
+-  function feature(topology, o) {
+-    return o.type === "GeometryCollection" ? {
+-      type: "FeatureCollection",
+-      features: o.geometries.map(function(o) { return feature$1(topology, o); })
+-    } : feature$1(topology, o);
++  function polygon(arcs, i) {
++    arcs.forEach(function(arc) { line(arc, i); });
+   }
+ 
+-  function feature$1(topology, o) {
+-    var f = {
+-      type: "Feature",
+-      id: o.id,
+-      properties: o.properties || {},
+-      geometry: object(topology, o)
+-    };
+-    if (o.id == null) delete f.id;
+-    return f;
++  function geometry(o, i) {
++    if (o.type === "GeometryCollection") o.geometries.forEach(function(o) { geometry(o, i); });
++    else if (o.type in geometryType) geometryType[o.type](o.arcs, i);
+   }
+ 
+-  function object(topology, o) {
+-    var absolute$$ = absolute(topology.transform),
+-        arcs = topology.arcs;
++  var geometryType = {
++    LineString: line,
++    MultiLineString: polygon,
++    Polygon: polygon,
++    MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); }
++  };
++
++  objects.forEach(geometry);
+ 
+-    function arc(i, points) {
+-      if (points.length) points.pop();
+-      for (var a = arcs[i < 0 ? ~i : i], k = 0, n = a.length, p; k < n; ++k) {
+-        points.push(p = a[k].slice());
+-        absolute$$(p, k);
++  for (var i in indexesByArc) {
++    for (var indexes = indexesByArc[i], m = indexes.length, j = 0; j < m; ++j) {
++      for (var k = j + 1; k < m; ++k) {
++        var ij = indexes[j], ik = indexes[k], n;
++        if ((n = neighbors[ij])[i = bisect(n, ik)] !== ik) n.splice(i, 0, ik);
++        if ((n = neighbors[ik])[i = bisect(n, ij)] !== ij) n.splice(i, 0, ij);
+       }
+-      if (i < 0) reverse(points, n);
+     }
++  }
+ 
+-    function point(p) {
+-      p = p.slice();
+-      absolute$$(p, 0);
+-      return p;
+-    }
++  return neighbors;
++}
++
++function compareArea(a, b) {
++  return a[1][2] - b[1][2];
++}
++
++function minAreaHeap() {
++  var heap = {},
++      array = [],
++      size = 0;
++
++  heap.push = function(object) {
++    up(array[object._ = size] = object, size++);
++    return size;
++  };
+ 
+-    function line(arcs) {
+-      var points = [];
+-      for (var i = 0, n = arcs.length; i < n; ++i) arc(arcs[i], points);
+-      if (points.length < 2) points.push(points[0].slice());
+-      return points;
++  heap.pop = function() {
++    if (size <= 0) return;
++    var removed = array[0], object;
++    if (--size > 0) object = array[size], down(array[object._ = 0] = object, 0);
++    return removed;
++  };
++
++  heap.remove = function(removed) {
++    var i = removed._, object;
++    if (array[i] !== removed) return; // invalid request
++    if (i !== --size) object = array[size], (compareArea(object, removed) < 0 ? up : down)(array[object._ = i] = object, i);
++    return i;
++  };
++
++  function up(object, i) {
++    while (i > 0) {
++      var j = ((i + 1) >> 1) - 1,
++          parent = array[j];
++      if (compareArea(object, parent) >= 0) break;
++      array[parent._ = i] = parent;
++      array[object._ = i = j] = object;
+     }
++  }
+ 
+-    function ring(arcs) {
+-      var points = line(arcs);
+-      while (points.length < 4) points.push(points[0].slice());
+-      return points;
++  function down(object, i) {
++    while (true) {
++      var r = (i + 1) << 1,
++          l = r - 1,
++          j = i,
++          child = array[j];
++      if (l < size && compareArea(array[l], child) < 0) child = array[j = l];
++      if (r < size && compareArea(array[r], child) < 0) child = array[j = r];
++      if (j === i) break;
++      array[child._ = i] = child;
++      array[object._ = i = j] = object;
+     }
++  }
+ 
+-    function polygon(arcs) {
+-      return arcs.map(ring);
++  return heap;
++}
++
++function presimplify(topology, triangleArea) {
++  var absolute = transformAbsolute(topology.transform),
++      relative = transformRelative(topology.transform),
++      heap = minAreaHeap();
++
++  if (!triangleArea) triangleArea = cartesianTriangleArea;
++
++  topology.arcs.forEach(function(arc) {
++    var triangles = [],
++        maxArea = 0,
++        triangle,
++        i,
++        n,
++        p;
++
++    // To store each point’s effective area, we create a new array rather than
++    // extending the passed-in point to workaround a Chrome/V8 bug (getting
++    // stuck in smi mode). For midpoints, the initial effective area of
++    // Infinity will be computed in the next step.
++    for (i = 0, n = arc.length; i < n; ++i) {
++      p = arc[i];
++      absolute(arc[i] = [p[0], p[1], Infinity], i);
+     }
+ 
+-    function geometry(o) {
+-      var t = o.type;
+-      return t === "GeometryCollection" ? {type: t, geometries: o.geometries.map(geometry)}
+-          : t in geometryType ? {type: t, coordinates: geometryType[t](o)}
+-          : null;
++    for (i = 1, n = arc.length - 1; i < n; ++i) {
++      triangle = arc.slice(i - 1, i + 2);
++      triangle[1][2] = triangleArea(triangle);
++      triangles.push(triangle);
++      heap.push(triangle);
+     }
+ 
+-    var geometryType = {
+-      Point: function(o) { return point(o.coordinates); },
+-      MultiPoint: function(o) { return o.coordinates.map(point); },
+-      LineString: function(o) { return line(o.arcs); },
+-      MultiLineString: function(o) { return o.arcs.map(line); },
+-      Polygon: function(o) { return polygon(o.arcs); },
+-      MultiPolygon: function(o) { return o.arcs.map(polygon); }
+-    };
++    for (i = 0, n = triangles.length; i < n; ++i) {
++      triangle = triangles[i];
++      triangle.previous = triangles[i - 1];
++      triangle.next = triangles[i + 1];
++    }
+ 
+-    return geometry(o);
+-  }
++    while (triangle = heap.pop()) {
++      var previous = triangle.previous,
++          next = triangle.next;
+ 
+-  function stitchArcs(topology, arcs) {
+-    var stitchedArcs = {},
+-        fragmentByStart = {},
+-        fragmentByEnd = {},
+-        fragments = [],
+-        emptyIndex = -1;
++      // If the area of the current point is less than that of the previous point
++      // to be eliminated, use the latter's area instead. This ensures that the
++      // current point cannot be eliminated without eliminating previously-
++      // eliminated points.
++      if (triangle[1][2] < maxArea) triangle[1][2] = maxArea;
++      else maxArea = triangle[1][2];
+ 
+-    // Stitch empty arcs first, since they may be subsumed by other arcs.
+-    arcs.forEach(function(i, j) {
+-      var arc = topology.arcs[i < 0 ? ~i : i], t;
+-      if (arc.length < 3 && !arc[1][0] && !arc[1][1]) {
+-        t = arcs[++emptyIndex], arcs[emptyIndex] = i, arcs[j] = t;
++      if (previous) {
++        previous.next = next;
++        previous[2] = triangle[2];
++        update(previous);
+       }
+-    });
+ 
+-    arcs.forEach(function(i) {
+-      var e = ends(i),
+-          start = e[0],
+-          end = e[1],
+-          f, g;
+-
+-      if (f = fragmentByEnd[start]) {
+-        delete fragmentByEnd[f.end];
+-        f.push(i);
+-        f.end = end;
+-        if (g = fragmentByStart[end]) {
+-          delete fragmentByStart[g.start];
+-          var fg = g === f ? f : f.concat(g);
+-          fragmentByStart[fg.start = f.start] = fragmentByEnd[fg.end = g.end] = fg;
+-        } else {
+-          fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
+-        }
+-      } else if (f = fragmentByStart[end]) {
+-        delete fragmentByStart[f.start];
+-        f.unshift(i);
+-        f.start = start;
+-        if (g = fragmentByEnd[start]) {
+-          delete fragmentByEnd[g.end];
+-          var gf = g === f ? f : g.concat(f);
+-          fragmentByStart[gf.start = g.start] = fragmentByEnd[gf.end = f.end] = gf;
+-        } else {
+-          fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
+-        }
+-      } else {
+-        f = [i];
+-        fragmentByStart[f.start = start] = fragmentByEnd[f.end = end] = f;
++      if (next) {
++        next.previous = previous;
++        next[0] = triangle[0];
++        update(next);
+       }
+-    });
+-
+-    function ends(i) {
+-      var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
+-      if (topology.transform) p1 = [0, 0], arc.forEach(function(dp) { p1[0] += dp[0], p1[1] += dp[1]; });
+-      else p1 = arc[arc.length - 1];
+-      return i < 0 ? [p1, p0] : [p0, p1];
+     }
+ 
+-    function flush(fragmentByEnd, fragmentByStart) {
+-      for (var k in fragmentByEnd) {
+-        var f = fragmentByEnd[k];
+-        delete fragmentByStart[f.start];
+-        delete f.start;
+-        delete f.end;
+-        f.forEach(function(i) { stitchedArcs[i < 0 ? ~i : i] = 1; });
+-        fragments.push(f);
+-      }
++    arc.forEach(relative);
++  });
++
++  function update(triangle) {
++    heap.remove(triangle);
++    triangle[1][2] = triangleArea(triangle);
++    heap.push(triangle);
++  }
++
++  return topology;
++}
++
++var version = "1.6.27";
++
++exports.version = version;
++exports.mesh = mesh;
++exports.meshArcs = meshArcs;
++exports.merge = merge;
++exports.mergeArcs = mergeArcs;
++exports.feature = feature;
++exports.neighbors = neighbors;
++exports.presimplify = presimplify;
++
++Object.defineProperty(exports, '__esModule', { value: true });
++
++})));
++},{}],445:[function(require,module,exports){
++"use strict"
++
++module.exports = triangulateCube
++
++var perm = require("permutation-rank")
++var sgn = require("permutation-parity")
++var gamma = require("gamma")
++
++function triangulateCube(dimension) {
++  if(dimension < 0) {
++    return [ ]
++  }
++  if(dimension === 0) {
++    return [ [0] ]
++  }
++  var dfactorial = Math.round(gamma(dimension+1))|0
++  var result = []
++  for(var i=0; i<dfactorial; ++i) {
++    var p = perm.unrank(dimension, i)
++    var cell = [ 0 ]
++    var v = 0
++    for(var j=0; j<p.length; ++j) {
++      v += (1<<p[j])
++      cell.push(v)
++    }
++    if(sgn(p) < 1) {
++      cell[0] = v
++      cell[dimension] = 0
+     }
++    result.push(cell)
++  }
++  return result
++}
++},{"gamma":102,"permutation-parity":395,"permutation-rank":396}],446:[function(require,module,exports){
++'use strict'
++
++module.exports = createTurntableController
++
++var filterVector = require('filtered-vector')
++var invert44     = require('gl-mat4/invert')
++var rotateM      = require('gl-mat4/rotate')
++var cross        = require('gl-vec3/cross')
++var normalize3   = require('gl-vec3/normalize')
++var dot3         = require('gl-vec3/dot')
++
++function len3(x, y, z) {
++  return Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2) + Math.pow(z, 2))
++}
++
++function clamp1(x) {
++  return Math.min(1.0, Math.max(-1.0, x))
++}
+ 
+-    flush(fragmentByEnd, fragmentByStart);
+-    flush(fragmentByStart, fragmentByEnd);
+-    arcs.forEach(function(i) { if (!stitchedArcs[i < 0 ? ~i : i]) fragments.push([i]); });
++function findOrthoPair(v) {
++  var vx = Math.abs(v[0])
++  var vy = Math.abs(v[1])
++  var vz = Math.abs(v[2])
++
++  var u = [0,0,0]
++  if(vx > Math.max(vy, vz)) {
++    u[2] = 1
++  } else if(vy > Math.max(vx, vz)) {
++    u[0] = 1
++  } else {
++    u[1] = 1
++  }
+ 
+-    return fragments;
++  var vv = 0
++  var uv = 0
++  for(var i=0; i<3; ++i ) {
++    vv += v[i] * v[i]
++    uv += u[i] * v[i]
++  }
++  for(var i=0; i<3; ++i) {
++    u[i] -= (uv / vv) *  v[i]
+   }
++  normalize3(u, u)
++  return u
++}
++
++function TurntableController(zoomMin, zoomMax, center, up, right, radius, theta, phi) {
++  this.center = filterVector(center)
++  this.up     = filterVector(up)
++  this.right  = filterVector(right)
++  this.radius = filterVector([radius])
++  this.angle  = filterVector([theta, phi])
++  this.angle.bounds = [[-Infinity,-Math.PI/2], [Infinity,Math.PI/2]]
++  this.setDistanceLimits(zoomMin, zoomMax)
+ 
+-  function mesh(topology) {
+-    return object(topology, meshArcs.apply(this, arguments));
++  this.computedCenter = this.center.curve(0)
++  this.computedUp     = this.up.curve(0)
++  this.computedRight  = this.right.curve(0)
++  this.computedRadius = this.radius.curve(0)
++  this.computedAngle  = this.angle.curve(0)
++  this.computedToward = [0,0,0]
++  this.computedEye    = [0,0,0]
++  this.computedMatrix = new Array(16)
++  for(var i=0; i<16; ++i) {
++    this.computedMatrix[i] = 0.5
+   }
+ 
+-  function meshArcs(topology, o, filter) {
+-    var arcs = [];
++  this.recalcMatrix(0)
++}
+ 
+-    function arc(i) {
+-      var j = i < 0 ? ~i : i;
+-      (geomsByArc[j] || (geomsByArc[j] = [])).push({i: i, g: geom});
+-    }
++var proto = TurntableController.prototype
+ 
+-    function line(arcs) {
+-      arcs.forEach(arc);
+-    }
++proto.setDistanceLimits = function(minDist, maxDist) {
++  if(minDist > 0) {
++    minDist = Math.log(minDist)
++  } else {
++    minDist = -Infinity
++  }
++  if(maxDist > 0) {
++    maxDist = Math.log(maxDist)
++  } else {
++    maxDist = Infinity
++  }
++  maxDist = Math.max(maxDist, minDist)
++  this.radius.bounds[0][0] = minDist
++  this.radius.bounds[1][0] = maxDist
++}
++
++proto.getDistanceLimits = function(out) {
++  var bounds = this.radius.bounds[0]
++  if(out) {
++    out[0] = Math.exp(bounds[0][0])
++    out[1] = Math.exp(bounds[1][0])
++    return out
++  }
++  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
++}
++
++proto.recalcMatrix = function(t) {
++  //Recompute curves
++  this.center.curve(t)
++  this.up.curve(t)
++  this.right.curve(t)
++  this.radius.curve(t)
++  this.angle.curve(t)
++
++  //Compute frame for camera matrix
++  var up     = this.computedUp
++  var right  = this.computedRight
++  var uu = 0.0
++  var ur = 0.0
++  for(var i=0; i<3; ++i) {
++    ur += up[i] * right[i]
++    uu += up[i] * up[i]
++  }
++  var ul = Math.sqrt(uu)
++  var rr = 0.0
++  for(var i=0; i<3; ++i) {
++    right[i] -= up[i] * ur / uu
++    rr       += right[i] * right[i]
++    up[i]    /= ul
++  }
++  var rl = Math.sqrt(rr)
++  for(var i=0; i<3; ++i) {
++    right[i] /= rl
++  }
++
++  //Compute toward vector
++  var toward = this.computedToward
++  cross(toward, up, right)
++  normalize3(toward, toward)
++
++  //Compute angular parameters
++  var radius = Math.exp(this.computedRadius[0])
++  var theta  = this.computedAngle[0]
++  var phi    = this.computedAngle[1]
++
++  var ctheta = Math.cos(theta)
++  var stheta = Math.sin(theta)
++  var cphi   = Math.cos(phi)
++  var sphi   = Math.sin(phi)
++
++  var center = this.computedCenter
++
++  var wx = ctheta * cphi 
++  var wy = stheta * cphi
++  var wz = sphi
++
++  var sx = -ctheta * sphi
++  var sy = -stheta * sphi
++  var sz = cphi
++
++  var eye = this.computedEye
++  var mat = this.computedMatrix
++  for(var i=0; i<3; ++i) {
++    var x      = wx * right[i] + wy * toward[i] + wz * up[i]
++    mat[4*i+1] = sx * right[i] + sy * toward[i] + sz * up[i]
++    mat[4*i+2] = x
++    mat[4*i+3] = 0.0
++  }
++
++  var ax = mat[1]
++  var ay = mat[5]
++  var az = mat[9]
++  var bx = mat[2]
++  var by = mat[6]
++  var bz = mat[10]
++  var cx = ay * bz - az * by
++  var cy = az * bx - ax * bz
++  var cz = ax * by - ay * bx
++  var cl = len3(cx, cy, cz)
++  cx /= cl
++  cy /= cl
++  cz /= cl
++  mat[0] = cx
++  mat[4] = cy
++  mat[8] = cz
++
++  for(var i=0; i<3; ++i) {
++    eye[i] = center[i] + mat[2+4*i]*radius
++  }
+ 
+-    function polygon(arcs) {
+-      arcs.forEach(line);
++  for(var i=0; i<3; ++i) {
++    var rr = 0.0
++    for(var j=0; j<3; ++j) {
++      rr += mat[i+4*j] * eye[j]
+     }
++    mat[12+i] = -rr
++  }
++  mat[15] = 1.0
++}
+ 
+-    function geometry(o) {
+-      if (o.type === "GeometryCollection") o.geometries.forEach(geometry);
+-      else if (o.type in geometryType) geom = o, geometryType[o.type](o.arcs);
++proto.getMatrix = function(t, result) {
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
++  if(result) {
++    for(var i=0; i<16; ++i) {
++      result[i] = mat[i]
+     }
++    return result
++  }
++  return mat
++}
+ 
+-    if (arguments.length > 1) {
+-      var geomsByArc = [],
+-          geom;
+-
+-      var geometryType = {
+-        LineString: line,
+-        MultiLineString: polygon,
+-        Polygon: polygon,
+-        MultiPolygon: function(arcs) { arcs.forEach(polygon); }
+-      };
++var zAxis = [0,0,0]
++proto.rotate = function(t, dtheta, dphi, droll) {
++  this.angle.move(t, dtheta, dphi)
++  if(droll) {
++    this.recalcMatrix(t)
++
++    var mat = this.computedMatrix
++    zAxis[0] = mat[2]
++    zAxis[1] = mat[6]
++    zAxis[2] = mat[10]
+ 
+-      geometry(o);
++    var up     = this.computedUp
++    var right  = this.computedRight
++    var toward = this.computedToward
+ 
+-      geomsByArc.forEach(arguments.length < 3
+-          ? function(geoms) { arcs.push(geoms[0].i); }
+-          : function(geoms) { if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs.push(geoms[0].i); });
+-    } else {
+-      for (var i = 0, n = topology.arcs.length; i < n; ++i) arcs.push(i);
++    for(var i=0; i<3; ++i) {
++      mat[4*i]   = up[i]
++      mat[4*i+1] = right[i]
++      mat[4*i+2] = toward[i]
++    }
++    rotateM(mat, mat, droll, zAxis)
++    for(var i=0; i<3; ++i) {
++      up[i] =    mat[4*i]
++      right[i] = mat[4*i+1]
+     }
+ 
+-    return {type: "MultiLineString", arcs: stitchArcs(topology, arcs)};
++    this.up.set(t, up[0], up[1], up[2])
++    this.right.set(t, right[0], right[1], right[2])
++  }
++}
++
++proto.pan = function(t, dx, dy, dz) {
++  dx = dx || 0.0
++  dy = dy || 0.0
++  dz = dz || 0.0
++
++  this.recalcMatrix(t)
++  var mat = this.computedMatrix
++
++  var dist = Math.exp(this.computedRadius[0])
++
++  var ux = mat[1]
++  var uy = mat[5]
++  var uz = mat[9]
++  var ul = len3(ux, uy, uz)
++  ux /= ul
++  uy /= ul
++  uz /= ul
++
++  var rx = mat[0]
++  var ry = mat[4]
++  var rz = mat[8]
++  var ru = rx * ux + ry * uy + rz * uz
++  rx -= ux * ru
++  ry -= uy * ru
++  rz -= uz * ru
++  var rl = len3(rx, ry, rz)
++  rx /= rl
++  ry /= rl
++  rz /= rl
++
++  var vx = rx * dx + ux * dy
++  var vy = ry * dx + uy * dy
++  var vz = rz * dx + uz * dy
++  this.center.move(t, vx, vy, vz)
++
++  //Update z-component of radius
++  var radius = Math.exp(this.computedRadius[0])
++  radius = Math.max(1e-4, radius + dz)
++  this.radius.set(t, Math.log(radius))
++}
++
++proto.translate = function(t, dx, dy, dz) {
++  this.center.move(t,
++    dx||0.0,
++    dy||0.0,
++    dz||0.0)
++}
++
++//Recenters the coordinate axes
++proto.setMatrix = function(t, mat, axes, noSnap) {
++  
++  //Get the axes for tare
++  var ushift = 1
++  if(typeof axes === 'number') {
++    ushift = (axes)|0
++  } 
++  if(ushift < 0 || ushift > 3) {
++    ushift = 1
++  }
++  var vshift = (ushift + 2) % 3
++  var fshift = (ushift + 1) % 3
++
++  //Recompute state for new t value
++  if(!mat) { 
++    this.recalcMatrix(t)
++    mat = this.computedMatrix
+   }
+ 
+-  function triangle(triangle) {
+-    var a = triangle[0], b = triangle[1], c = triangle[2];
+-    return Math.abs((a[0] - c[0]) * (b[1] - a[1]) - (a[0] - b[0]) * (c[1] - a[1]));
++  //Get right and up vectors
++  var ux = mat[ushift]
++  var uy = mat[ushift+4]
++  var uz = mat[ushift+8]
++  if(!noSnap) {
++    var ul = len3(ux, uy, uz)
++    ux /= ul
++    uy /= ul
++    uz /= ul
++  } else {
++    var ax = Math.abs(ux)
++    var ay = Math.abs(uy)
++    var az = Math.abs(uz)
++    var am = Math.max(ax,ay,az)
++    if(ax === am) {
++      ux = (ux < 0) ? -1 : 1
++      uy = uz = 0
++    } else if(az === am) {
++      uz = (uz < 0) ? -1 : 1
++      ux = uy = 0
++    } else {
++      uy = (uy < 0) ? -1 : 1
++      ux = uz = 0
++    }
+   }
+ 
+-  function ring(ring) {
+-    var i = -1,
+-        n = ring.length,
+-        a,
+-        b = ring[n - 1],
+-        area = 0;
++  var rx = mat[vshift]
++  var ry = mat[vshift+4]
++  var rz = mat[vshift+8]
++  var ru = rx * ux + ry * uy + rz * uz
++  rx -= ux * ru
++  ry -= uy * ru
++  rz -= uz * ru
++  var rl = len3(rx, ry, rz)
++  rx /= rl
++  ry /= rl
++  rz /= rl
++  
++  var fx = uy * rz - uz * ry
++  var fy = uz * rx - ux * rz
++  var fz = ux * ry - uy * rx
++  var fl = len3(fx, fy, fz)
++  fx /= fl
++  fy /= fl
++  fz /= fl
++
++  this.center.jump(t, ex, ey, ez)
++  this.radius.idle(t)
++  this.up.jump(t, ux, uy, uz)
++  this.right.jump(t, rx, ry, rz)
+ 
+-    while (++i < n) {
+-      a = b;
+-      b = ring[i];
+-      area += a[0] * b[1] - a[1] * b[0];
++  var phi, theta
++  if(ushift === 2) {
++    var cx = mat[1]
++    var cy = mat[5]
++    var cz = mat[9]
++    var cr = cx * rx + cy * ry + cz * rz
++    var cf = cx * fx + cy * fy + cz * fz
++    if(tu < 0) {
++      phi = -Math.PI/2
++    } else {
++      phi = Math.PI/2
+     }
++    theta = Math.atan2(cf, cr)
++  } else {
++    var tx = mat[2]
++    var ty = mat[6]
++    var tz = mat[10]
++    var tu = tx * ux + ty * uy + tz * uz
++    var tr = tx * rx + ty * ry + tz * rz
++    var tf = tx * fx + ty * fy + tz * fz
+ 
+-    return area / 2;
++    phi = Math.asin(clamp1(tu))
++    theta = Math.atan2(tf, tr)
+   }
+ 
+-  function merge(topology) {
+-    return object(topology, mergeArcs.apply(this, arguments));
+-  }
++  this.angle.jump(t, theta, phi)
+ 
+-  function mergeArcs(topology, objects) {
+-    var polygonsByArc = {},
+-        polygons = [],
+-        components = [];
++  this.recalcMatrix(t)
++  var dx = mat[2]
++  var dy = mat[6]
++  var dz = mat[10]
+ 
+-    objects.forEach(function(o) {
+-      if (o.type === "Polygon") register(o.arcs);
+-      else if (o.type === "MultiPolygon") o.arcs.forEach(register);
+-    });
++  var imat = this.computedMatrix
++  invert44(imat, mat)
++  var w  = imat[15]
++  var ex = imat[12] / w
++  var ey = imat[13] / w
++  var ez = imat[14] / w
+ 
+-    function register(polygon) {
+-      polygon.forEach(function(ring$$) {
+-        ring$$.forEach(function(arc) {
+-          (polygonsByArc[arc = arc < 0 ? ~arc : arc] || (polygonsByArc[arc] = [])).push(polygon);
+-        });
+-      });
+-      polygons.push(polygon);
+-    }
+-
+-    function exterior(ring$$) {
+-      return ring(object(topology, {type: "Polygon", arcs: [ring$$]}).coordinates[0]) > 0; // TODO allow spherical?
+-    }
+-
+-    polygons.forEach(function(polygon) {
+-      if (!polygon._) {
+-        var component = [],
+-            neighbors = [polygon];
+-        polygon._ = 1;
+-        components.push(component);
+-        while (polygon = neighbors.pop()) {
+-          component.push(polygon);
+-          polygon.forEach(function(ring$$) {
+-            ring$$.forEach(function(arc) {
+-              polygonsByArc[arc < 0 ? ~arc : arc].forEach(function(polygon) {
+-                if (!polygon._) {
+-                  polygon._ = 1;
+-                  neighbors.push(polygon);
+-                }
+-              });
+-            });
+-          });
+-        }
+-      }
+-    });
++  var gs = Math.exp(this.computedRadius[0])
++  this.center.jump(t, ex-dx*gs, ey-dy*gs, ez-dz*gs)
++}
+ 
+-    polygons.forEach(function(polygon) {
+-      delete polygon._;
+-    });
++proto.lastT = function() {
++  return Math.max(
++    this.center.lastT(),
++    this.up.lastT(),
++    this.right.lastT(),
++    this.radius.lastT(),
++    this.angle.lastT())
++}
+ 
+-    return {
+-      type: "MultiPolygon",
+-      arcs: components.map(function(polygons) {
+-        var arcs = [], n;
+-
+-        // Extract the exterior (unique) arcs.
+-        polygons.forEach(function(polygon) {
+-          polygon.forEach(function(ring$$) {
+-            ring$$.forEach(function(arc) {
+-              if (polygonsByArc[arc < 0 ? ~arc : arc].length < 2) {
+-                arcs.push(arc);
+-              }
+-            });
+-          });
+-        });
++proto.idle = function(t) {
++  this.center.idle(t)
++  this.up.idle(t)
++  this.right.idle(t)
++  this.radius.idle(t)
++  this.angle.idle(t)
++}
+ 
+-        // Stitch the arcs into one or more rings.
+-        arcs = stitchArcs(topology, arcs);
+-
+-        // If more than one ring is returned,
+-        // at most one of these rings can be the exterior;
+-        // this exterior ring has the same winding order
+-        // as any exterior ring in the original polygons.
+-        if ((n = arcs.length) > 1) {
+-          var sgn = exterior(polygons[0][0]);
+-          for (var i = 0, t; i < n; ++i) {
+-            if (sgn === exterior(arcs[i])) {
+-              t = arcs[0], arcs[0] = arcs[i], arcs[i] = t;
+-              break;
+-            }
+-          }
+-        }
++proto.flush = function(t) {
++  this.center.flush(t)
++  this.up.flush(t)
++  this.right.flush(t)
++  this.radius.flush(t)
++  this.angle.flush(t)
++}
+ 
+-        return arcs;
+-      })
+-    };
++proto.setDistance = function(t, d) {
++  if(d > 0) {
++    this.radius.set(t, Math.log(d))
+   }
++}
+ 
+-  function neighbors(objects) {
+-    var indexesByArc = {}, // arc index -> array of object indexes
+-        neighbors = objects.map(function() { return []; });
+-
+-    function line(arcs, i) {
+-      arcs.forEach(function(a) {
+-        if (a < 0) a = ~a;
+-        var o = indexesByArc[a];
+-        if (o) o.push(i);
+-        else indexesByArc[a] = [i];
+-      });
+-    }
+-
+-    function polygon(arcs, i) {
+-      arcs.forEach(function(arc) { line(arc, i); });
+-    }
+-
+-    function geometry(o, i) {
+-      if (o.type === "GeometryCollection") o.geometries.forEach(function(o) { geometry(o, i); });
+-      else if (o.type in geometryType) geometryType[o.type](o.arcs, i);
+-    }
+-
+-    var geometryType = {
+-      LineString: line,
+-      MultiLineString: polygon,
+-      Polygon: polygon,
+-      MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); }
+-    };
+-
+-    objects.forEach(geometry);
++proto.lookAt = function(t, eye, center, up) {
++  this.recalcMatrix(t)
+ 
+-    for (var i in indexesByArc) {
+-      for (var indexes = indexesByArc[i], m = indexes.length, j = 0; j < m; ++j) {
+-        for (var k = j + 1; k < m; ++k) {
+-          var ij = indexes[j], ik = indexes[k], n;
+-          if ((n = neighbors[ij])[i = bisect(n, ik)] !== ik) n.splice(i, 0, ik);
+-          if ((n = neighbors[ik])[i = bisect(n, ij)] !== ij) n.splice(i, 0, ij);
+-        }
+-      }
+-    }
++  eye    = eye    || this.computedEye
++  center = center || this.computedCenter
++  up     = up     || this.computedUp
+ 
+-    return neighbors;
++  var ux = up[0]
++  var uy = up[1]
++  var uz = up[2]
++  var ul = len3(ux, uy, uz)
++  if(ul < 1e-6) {
++    return
+   }
++  ux /= ul
++  uy /= ul
++  uz /= ul
+ 
+-  function compareArea(a, b) {
+-    return a[1][2] - b[1][2];
++  var tx = eye[0] - center[0]
++  var ty = eye[1] - center[1]
++  var tz = eye[2] - center[2]
++  var tl = len3(tx, ty, tz)
++  if(tl < 1e-6) {
++    return
+   }
++  tx /= tl
++  ty /= tl
++  tz /= tl
+ 
+-  function minAreaHeap() {
+-    var heap = {},
+-        array = [],
+-        size = 0;
+-
+-    heap.push = function(object) {
+-      up(array[object._ = size] = object, size++);
+-      return size;
+-    };
+-
+-    heap.pop = function() {
+-      if (size <= 0) return;
+-      var removed = array[0], object;
+-      if (--size > 0) object = array[size], down(array[object._ = 0] = object, 0);
+-      return removed;
+-    };
+-
+-    heap.remove = function(removed) {
+-      var i = removed._, object;
+-      if (array[i] !== removed) return; // invalid request
+-      if (i !== --size) object = array[size], (compareArea(object, removed) < 0 ? up : down)(array[object._ = i] = object, i);
+-      return i;
+-    };
+-
+-    function up(object, i) {
+-      while (i > 0) {
+-        var j = ((i + 1) >> 1) - 1,
+-            parent = array[j];
+-        if (compareArea(object, parent) >= 0) break;
+-        array[parent._ = i] = parent;
+-        array[object._ = i = j] = object;
+-      }
+-    }
++  var right = this.computedRight
++  var rx = right[0]
++  var ry = right[1]
++  var rz = right[2]
++  var ru = ux*rx + uy*ry + uz*rz
++  rx -= ru * ux
++  ry -= ru * uy
++  rz -= ru * uz
++  var rl = len3(rx, ry, rz)
+ 
+-    function down(object, i) {
+-      while (true) {
+-        var r = (i + 1) << 1,
+-            l = r - 1,
+-            j = i,
+-            child = array[j];
+-        if (l < size && compareArea(array[l], child) < 0) child = array[j = l];
+-        if (r < size && compareArea(array[r], child) < 0) child = array[j = r];
+-        if (j === i) break;
+-        array[child._ = i] = child;
+-        array[object._ = i = j] = object;
+-      }
++  if(rl < 0.01) {
++    rx = uy * tz - uz * ty
++    ry = uz * tx - ux * tz
++    rz = ux * ty - uy * tx
++    rl = len3(rx, ry, rz)
++    if(rl < 1e-6) {
++      return
+     }
+-
+-    return heap;
+   }
++  rx /= rl
++  ry /= rl
++  rz /= rl
+ 
+-  function presimplify(topology, triangleArea) {
+-    var absolute$$ = absolute(topology.transform),
+-        relative$$ = relative(topology.transform),
+-        heap = minAreaHeap();
++  this.up.set(t, ux, uy, uz)
++  this.right.set(t, rx, ry, rz)
++  this.center.set(t, center[0], center[1], center[2])
++  this.radius.set(t, Math.log(tl))
+ 
+-    if (!triangleArea) triangleArea = triangle;
++  var fx = uy * rz - uz * ry
++  var fy = uz * rx - ux * rz
++  var fz = ux * ry - uy * rx
++  var fl = len3(fx, fy, fz)
++  fx /= fl
++  fy /= fl
++  fz /= fl
+ 
+-    topology.arcs.forEach(function(arc) {
+-      var triangles = [],
+-          maxArea = 0,
+-          triangle,
+-          i,
+-          n,
+-          p;
++  var tu = ux*tx + uy*ty + uz*tz
++  var tr = rx*tx + ry*ty + rz*tz
++  var tf = fx*tx + fy*ty + fz*tz
+ 
+-      // To store each point’s effective area, we create a new array rather than
+-      // extending the passed-in point to workaround a Chrome/V8 bug (getting
+-      // stuck in smi mode). For midpoints, the initial effective area of
+-      // Infinity will be computed in the next step.
+-      for (i = 0, n = arc.length; i < n; ++i) {
+-        p = arc[i];
+-        absolute$$(arc[i] = [p[0], p[1], Infinity], i);
+-      }
++  var phi   = Math.asin(clamp1(tu))
++  var theta = Math.atan2(tf, tr)
+ 
+-      for (i = 1, n = arc.length - 1; i < n; ++i) {
+-        triangle = arc.slice(i - 1, i + 2);
+-        triangle[1][2] = triangleArea(triangle);
+-        triangles.push(triangle);
+-        heap.push(triangle);
+-      }
++  var angleState = this.angle._state
++  var lastTheta  = angleState[angleState.length-1]
++  var lastPhi    = angleState[angleState.length-2]
++  lastTheta      = lastTheta % (2.0 * Math.PI)
++  var dp = Math.abs(lastTheta + 2.0 * Math.PI - theta)
++  var d0 = Math.abs(lastTheta - theta)
++  var dn = Math.abs(lastTheta - 2.0 * Math.PI - theta)
++  if(dp < d0) {
++    lastTheta += 2.0 * Math.PI
++  }
++  if(dn < d0) {
++    lastTheta -= 2.0 * Math.PI
++  }
+ 
+-      for (i = 0, n = triangles.length; i < n; ++i) {
+-        triangle = triangles[i];
+-        triangle.previous = triangles[i - 1];
+-        triangle.next = triangles[i + 1];
+-      }
++  this.angle.jump(this.angle.lastT(), lastTheta, lastPhi)
++  this.angle.set(t, theta, phi)
++}
+ 
+-      while (triangle = heap.pop()) {
+-        var previous = triangle.previous,
+-            next = triangle.next;
++function createTurntableController(options) {
++  options = options || {}
+ 
+-        // If the area of the current point is less than that of the previous point
+-        // to be eliminated, use the latter's area instead. This ensures that the
+-        // current point cannot be eliminated without eliminating previously-
+-        // eliminated points.
+-        if (triangle[1][2] < maxArea) triangle[1][2] = maxArea;
+-        else maxArea = triangle[1][2];
++  var center = options.center || [0,0,0]
++  var up     = options.up     || [0,1,0]
++  var right  = options.right  || findOrthoPair(up)
++  var radius = options.radius || 1.0
++  var theta  = options.theta  || 0.0
++  var phi    = options.phi    || 0.0
+ 
+-        if (previous) {
+-          previous.next = next;
+-          previous[2] = triangle[2];
+-          update(previous);
+-        }
++  center = [].slice.call(center, 0, 3)
+ 
+-        if (next) {
+-          next.previous = previous;
+-          next[0] = triangle[0];
+-          update(next);
+-        }
+-      }
++  up = [].slice.call(up, 0, 3)
++  normalize3(up, up)
+ 
+-      arc.forEach(relative$$);
+-    });
++  right = [].slice.call(right, 0, 3)
++  normalize3(right, right)
+ 
+-    function update(triangle) {
+-      heap.remove(triangle);
+-      triangle[1][2] = triangleArea(triangle);
+-      heap.push(triangle);
++  if('eye' in options) {
++    var eye = options.eye
++    var toward = [
++      eye[0]-center[0],
++      eye[1]-center[1],
++      eye[2]-center[2]
++    ]
++    cross(right, toward, up)
++    if(len3(right[0], right[1], right[2]) < 1e-6) {
++      right = findOrthoPair(up)
++    } else {
++      normalize3(right, right)
+     }
+ 
+-    return topology;
+-  }
++    radius = len3(toward[0], toward[1], toward[2])
+ 
+-  var version = "1.6.24";
++    var ut = dot3(up, toward) / radius
++    var rt = dot3(right, toward) / radius
++    phi    = Math.acos(ut)
++    theta  = Math.acos(rt)
++  }
+ 
+-  exports.version = version;
+-  exports.mesh = mesh;
+-  exports.meshArcs = meshArcs;
+-  exports.merge = merge;
+-  exports.mergeArcs = mergeArcs;
+-  exports.feature = feature;
+-  exports.neighbors = neighbors;
+-  exports.presimplify = presimplify;
++  //Use logarithmic coordinates for radius
++  radius = Math.log(radius)
+ 
+-}));
+-},{}],456:[function(require,module,exports){
++  //Return the controller
++  return new TurntableController(
++    options.zoomMin,
++    options.zoomMax,
++    center,
++    up,
++    right,
++    radius,
++    theta,
++    phi)
++}
++},{"filtered-vector":100,"gl-mat4/invert":142,"gl-mat4/rotate":146,"gl-vec3/cross":207,"gl-vec3/dot":208,"gl-vec3/normalize":211}],447:[function(require,module,exports){
+ "use strict"
+ 
+ module.exports = twoProduct
+@@ -77753,7 +79868,7 @@ function twoProduct(a, b, result) {
+ 
+   return [ y, x ]
+ }
+-},{}],457:[function(require,module,exports){
++},{}],448:[function(require,module,exports){
+ "use strict"
+ 
+ module.exports = fastTwoSum
+@@ -77771,7 +79886,7 @@ function fastTwoSum(a, b, result) {
+ 	}
+ 	return [ar+br, x]
+ }
+-},{}],458:[function(require,module,exports){
++},{}],449:[function(require,module,exports){
+ (function (global,Buffer){
+ 'use strict'
+ 
+@@ -77988,7 +80103,70 @@ exports.clearCache = function clearCache() {
+   }
+ }
+ }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
+-},{"bit-twiddle":51,"buffer":53,"dup":121}],459:[function(require,module,exports){
++},{"bit-twiddle":49,"buffer":59,"dup":93}],450:[function(require,module,exports){
++"use strict"; "use restrict";
++
++module.exports = UnionFind;
++
++function UnionFind(count) {
++  this.roots = new Array(count);
++  this.ranks = new Array(count);
++  
++  for(var i=0; i<count; ++i) {
++    this.roots[i] = i;
++    this.ranks[i] = 0;
++  }
++}
++
++var proto = UnionFind.prototype
++
++Object.defineProperty(proto, "length", {
++  "get": function() {
++    return this.roots.length
++  }
++})
++
++proto.makeSet = function() {
++  var n = this.roots.length;
++  this.roots.push(n);
++  this.ranks.push(0);
++  return n;
++}
++
++proto.find = function(x) {
++  var x0 = x
++  var roots = this.roots;
++  while(roots[x] !== x) {
++    x = roots[x]
++  }
++  while(roots[x0] !== x) {
++    var y = roots[x0]
++    roots[x0] = x
++    x0 = y
++  }
++  return x;
++}
++
++proto.link = function(x, y) {
++  var xr = this.find(x)
++    , yr = this.find(y);
++  if(xr === yr) {
++    return;
++  }
++  var ranks = this.ranks
++    , roots = this.roots
++    , xd    = ranks[xr]
++    , yd    = ranks[yr];
++  if(xd < yd) {
++    roots[xr] = yr;
++  } else if(yd < xd) {
++    roots[yr] = xr;
++  } else {
++    roots[yr] = xr;
++    ++ranks[xr];
++  }
++}
++},{}],451:[function(require,module,exports){
+ "use strict"
+ 
+ function unique_pred(list, compare) {
+@@ -78017,2998 +80195,2560 @@ function unique_eq(list) {
+   for(var i=1; i<len; ++i, b=a) {
+     b = a
+     a = list[i]
+-    if(a !== b) {
+-      if(i === ptr) {
+-        ptr++
+-        continue
+-      }
+-      list[ptr++] = a
+-    }
+-  }
+-  list.length = ptr
+-  return list
+-}
+-
+-function unique(list, compare, sorted) {
+-  if(list.length === 0) {
+-    return list
+-  }
+-  if(compare) {
+-    if(!sorted) {
+-      list.sort(compare)
+-    }
+-    return unique_pred(list, compare)
+-  }
+-  if(!sorted) {
+-    list.sort()
+-  }
+-  return unique_eq(list)
+-}
+-
+-module.exports = unique
+-
+-},{}],460:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = createText
+-
+-var vectorizeText = require("./lib/vtext")
+-var defaultCanvas = null
+-var defaultContext = null
+-
+-if(typeof document !== 'undefined') {
+-  defaultCanvas = document.createElement('canvas')
+-  defaultCanvas.width = 8192
+-  defaultCanvas.height = 1024
+-  defaultContext = defaultCanvas.getContext("2d")
+-}
+-
+-function createText(str, options) {
+-  if((typeof options !== "object") || (options === null)) {
+-    options = {}
+-  }
+-  return vectorizeText(
+-    str,
+-    options.canvas || defaultCanvas,
+-    options.context || defaultContext,
+-    options)
+-}
+-
+-},{"./lib/vtext":461}],461:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = vectorizeText
+-module.exports.processPixels = processPixels
+-
+-var surfaceNets = require('surface-nets')
+-var ndarray = require('ndarray')
+-var simplify = require('simplify-planar-graph')
+-var cleanPSLG = require('clean-pslg')
+-var cdt2d = require('cdt2d')
+-var toPolygonCrappy = require('planar-graph-to-polyline')
+-
+-function transformPositions(positions, options, size) {
+-  var align = options.textAlign || "start"
+-  var baseline = options.textBaseline || "alphabetic"
+-
+-  var lo = [1<<30, 1<<30]
+-  var hi = [0,0]
+-  var n = positions.length
+-  for(var i=0; i<n; ++i) {
+-    var p = positions[i]
+-    for(var j=0; j<2; ++j) {
+-      lo[j] = Math.min(lo[j], p[j])|0
+-      hi[j] = Math.max(hi[j], p[j])|0
+-    }
+-  }
+-
+-  var xShift = 0
+-  switch(align) {
+-    case "center":
+-      xShift = -0.5 * (lo[0] + hi[0])
+-    break
+-
+-    case "right":
+-    case "end":
+-      xShift = -hi[0]
+-    break
+-
+-    case "left":
+-    case "start":
+-      xShift = -lo[0]
+-    break
+-
+-    default:
+-      throw new Error("vectorize-text: Unrecognized textAlign: '" + align + "'")
+-  }
+-
+-  var yShift = 0
+-  switch(baseline) {
+-    case "hanging":
+-    case "top":
+-      yShift = -lo[1]
+-    break
+-
+-    case "middle":
+-      yShift = -0.5 * (lo[1] + hi[1])
+-    break
+-
+-    case "alphabetic":
+-    case "ideographic":
+-      yShift = -3 * size
+-    break
+-
+-    case "bottom":
+-      yShift = -hi[1]
+-    break
+-
+-    default:
+-      throw new Error("vectorize-text: Unrecoginized textBaseline: '" + baseline + "'")
+-  }
+-
+-  var scale = 1.0 / size
+-  if("lineHeight" in options) {
+-    scale *= +options.lineHeight
+-  } else if("width" in options) {
+-    scale = options.width / (hi[0] - lo[0])
+-  } else if("height" in options) {
+-    scale = options.height / (hi[1] - lo[1])
+-  }
+-
+-  return positions.map(function(p) {
+-    return [ scale * (p[0] + xShift), scale * (p[1] + yShift) ]
+-  })
+-}
+-
+-function getPixels(canvas, context, str, size) {
+-  var width = Math.ceil(context.measureText(str).width + 2*size)|0
+-  if(width > 8192) {
+-    throw new Error("vectorize-text: String too long (sorry, this will get fixed later)")
+-  }
+-  var height = 3 * size
+-  if(canvas.height < height) {
+-    canvas.height = height
+-  }
+-
+-  context.fillStyle = "#000"
+-  context.fillRect(0, 0, canvas.width, canvas.height)
+-
+-  context.fillStyle = "#fff"
+-  context.fillText(str, size, 2*size)
+-
+-  //Cut pixels from image
+-  var pixelData = context.getImageData(0, 0, width, height)
+-  var pixels = ndarray(pixelData.data, [height, width, 4])
+-
+-  return pixels.pick(-1,-1,0).transpose(1,0)
+-}
+-
+-function getContour(pixels, doSimplify) {
+-  var contour = surfaceNets(pixels, 128)
+-  if(doSimplify) {
+-    return simplify(contour.cells, contour.positions, 0.25)
+-  }
+-  return {
+-    edges: contour.cells,
+-    positions: contour.positions
+-  }
+-}
+-
+-function processPixelsImpl(pixels, options, size, simplify) {
+-  //Extract contour
+-  var contour = getContour(pixels, simplify)
+-
+-  //Apply warp to positions
+-  var positions = transformPositions(contour.positions, options, size)
+-  var edges     = contour.edges
+-  var flip = "ccw" === options.orientation
+-
+-  //Clean up the PSLG, resolve self intersections, etc.
+-  cleanPSLG(positions, edges)
+-
+-  //If triangulate flag passed, triangulate the result
+-  if(options.polygons || options.polygon || options.polyline) {
+-    var result = toPolygonCrappy(edges, positions)
+-    var nresult = new Array(result.length)
+-    for(var i=0; i<result.length; ++i) {
+-      var loops = result[i]
+-      var nloops = new Array(loops.length)
+-      for(var j=0; j<loops.length; ++j) {
+-        var loop = loops[j]
+-        var nloop = new Array(loop.length)
+-        for(var k=0; k<loop.length; ++k) {
+-          nloop[k] = positions[loop[k]].slice()
+-        }
+-        if(flip) {
+-          nloop.reverse()
+-        }
+-        nloops[j] = nloop
+-      }
+-      nresult[i] = nloops
+-    }
+-    return nresult
+-  } else if(options.triangles || options.triangulate || options.triangle) {
+-    return {
+-      cells: cdt2d(positions, edges, {
+-        delaunay: false,
+-        exterior: false,
+-        interior: true
+-      }),
+-      positions: positions
+-    }
+-  } else {
+-    return {
+-      edges:     edges,
+-      positions: positions
++    if(a !== b) {
++      if(i === ptr) {
++        ptr++
++        continue
++      }
++      list[ptr++] = a
+     }
+   }
++  list.length = ptr
++  return list
+ }
+ 
+-function processPixels(pixels, options, size) {
+-  try {
+-    return processPixelsImpl(pixels, options, size, true)
+-  } catch(e) {}
+-  try {
+-    return processPixelsImpl(pixels, options, size, false)
+-  } catch(e) {}
+-  if(options.polygons || options.polyline || options.polygon) {
+-    return []
++function unique(list, compare, sorted) {
++  if(list.length === 0) {
++    return list
+   }
+-  if(options.triangles || options.triangulate || options.triangle) {
+-    return {
+-      cells: [],
+-      positions: []
++  if(compare) {
++    if(!sorted) {
++      list.sort(compare)
+     }
++    return unique_pred(list, compare)
+   }
+-  return {
+-    edges: [],
+-    positions: []
++  if(!sorted) {
++    list.sort()
+   }
++  return unique_eq(list)
+ }
+ 
+-function vectorizeText(str, canvas, context, options) {
+-  var size = options.size || 64
+-  var family = options.font || "normal"
++module.exports = unique
+ 
+-  context.font = size + "px " + family
+-  context.textAlign = "start"
+-  context.textBaseline = "alphabetic"
+-  context.direction = "ltr"
++},{}],452:[function(require,module,exports){
++/*
++ * Copyright (C) 2008 Apple Inc. All Rights Reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions and the following disclaimer.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ *
++ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
++ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
++ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
++ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ *
++ * Ported from Webkit
++ * http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/UnitBezier.h
++ */
+ 
+-  var pixels = getPixels(canvas, context, str, size)
++module.exports = UnitBezier;
+ 
+-  return processPixels(pixels, options, size)
+-}
++function UnitBezier(p1x, p1y, p2x, p2y) {
++    // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).
++    this.cx = 3.0 * p1x;
++    this.bx = 3.0 * (p2x - p1x) - this.cx;
++    this.ax = 1.0 - this.cx - this.bx;
+ 
+-},{"cdt2d":63,"clean-pslg":70,"ndarray":433,"planar-graph-to-polyline":474,"simplify-planar-graph":478,"surface-nets":452}],462:[function(require,module,exports){
+-'use strict'
++    this.cy = 3.0 * p1y;
++    this.by = 3.0 * (p2y - p1y) - this.cy;
++    this.ay = 1.0 - this.cy - this.by;
+ 
+-module.exports = trimLeaves
++    this.p1x = p1x;
++    this.p1y = p2y;
++    this.p2x = p2x;
++    this.p2y = p2y;
++}
+ 
+-var e2a = require('edges-to-adjacency-list')
++UnitBezier.prototype.sampleCurveX = function(t) {
++    // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.
++    return ((this.ax * t + this.bx) * t + this.cx) * t;
++};
+ 
+-function trimLeaves(edges, positions) {
+-  var adj = e2a(edges, positions.length)
+-  var live = new Array(positions.length)
+-  var nbhd = new Array(positions.length)
++UnitBezier.prototype.sampleCurveY = function(t) {
++    return ((this.ay * t + this.by) * t + this.cy) * t;
++};
+ 
+-  var dead = []
+-  for(var i=0; i<positions.length; ++i) {
+-    var count = adj[i].length
+-    nbhd[i] = count
+-    live[i] = true
+-    if(count <= 1) {
+-      dead.push(i)
+-    }
+-  }
++UnitBezier.prototype.sampleCurveDerivativeX = function(t) {
++    return (3.0 * this.ax * t + 2.0 * this.bx) * t + this.cx;
++};
+ 
+-  while(dead.length > 0) {
+-    var v = dead.pop()
+-    live[v] = false
+-    var n = adj[v]
+-    for(var i=0; i<n.length; ++i) {
+-      var u = n[i]
+-      if(--nbhd[u] === 0) {
+-        dead.push(u)
+-      }
+-    }
+-  }
++UnitBezier.prototype.solveCurveX = function(x, epsilon) {
++    if (typeof epsilon === 'undefined') epsilon = 1e-6;
+ 
+-  var newIndex = new Array(positions.length)
+-  var npositions = []
+-  for(var i=0; i<positions.length; ++i) {
+-    if(live[i]) {
+-      var v = npositions.length
+-      newIndex[i] = v
+-      npositions.push(positions[i])
+-    } else {
+-      newIndex[i] = -1
+-    }
+-  }
++    var t0, t1, t2, x2, i;
+ 
+-  var nedges = []
+-  for(var i=0; i<edges.length; ++i) {
+-    var e = edges[i]
+-    if(live[e[0]] && live[e[1]]) {
+-      nedges.push([ newIndex[e[0]], newIndex[e[1]] ])
+-    }
+-  }
+-  
+-  return [ nedges, npositions ]
+-}
+-},{"edges-to-adjacency-list":463}],463:[function(require,module,exports){
+-"use strict"
++    // First try a few iterations of Newton's method -- normally very fast.
++    for (t2 = x, i = 0; i < 8; i++) {
+ 
+-module.exports = edgeToAdjacency
++        x2 = this.sampleCurveX(t2) - x;
++        if (Math.abs(x2) < epsilon) return t2;
+ 
+-var uniq = require("uniq")
++        var d2 = this.sampleCurveDerivativeX(t2);
++        if (Math.abs(d2) < 1e-6) break;
+ 
+-function edgeToAdjacency(edges, numVertices) {
+-  var numEdges = edges.length
+-  if(typeof numVertices !== "number") {
+-    numVertices = 0
+-    for(var i=0; i<numEdges; ++i) {
+-      var e = edges[i]
+-      numVertices = Math.max(numVertices, e[0], e[1])
++        t2 = t2 - x2 / d2;
+     }
+-    numVertices = (numVertices|0) + 1
+-  }
+-  numVertices = numVertices|0
+-  var adj = new Array(numVertices)
+-  for(var i=0; i<numVertices; ++i) {
+-    adj[i] = []
+-  }
+-  for(var i=0; i<numEdges; ++i) {
+-    var e = edges[i]
+-    adj[e[0]].push(e[1])
+-    adj[e[1]].push(e[0])
+-  }
+-  for(var j=0; j<numVertices; ++j) {
+-    uniq(adj[j], function(a, b) {
+-      return a - b
+-    })
+-  }
+-  return adj
+-}
+-},{"uniq":459}],464:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = planarDual
++    // Fall back to the bisection method for reliability.
++    t0 = 0.0;
++    t1 = 1.0;
++    t2 = x;
+ 
+-var compareAngle = require("compare-angle")
++    if (t2 < t0) return t0;
++    if (t2 > t1) return t1;
+ 
+-function planarDual(cells, positions) {
++    while (t0 < t1) {
+ 
+-  var numVertices = positions.length|0
+-  var numEdges = cells.length
+-  var adj = [new Array(numVertices), new Array(numVertices)]
+-  for(var i=0; i<numVertices; ++i) {
+-    adj[0][i] = []
+-    adj[1][i] = []
+-  }
+-  for(var i=0; i<numEdges; ++i) {
+-    var c = cells[i]
+-    adj[0][c[0]].push(c)
+-    adj[1][c[1]].push(c)
+-  }
++        x2 = this.sampleCurveX(t2);
++        if (Math.abs(x2 - x) < epsilon) return t2;
+ 
+-  var cycles = []
++        if (x > x2) {
++            t0 = t2;
++        } else {
++            t1 = t2;
++        }
+ 
+-  //Add isolated vertices as trivial case
+-  for(var i=0; i<numVertices; ++i) {
+-    if(adj[0][i].length + adj[1][i].length === 0) {
+-      cycles.push( [i] )
++        t2 = (t1 - t0) * 0.5 + t0;
+     }
+-  }
+ 
+-  //Remove a half edge
+-  function cut(c, i) {
+-    var a = adj[i][c[i]]
+-    a.splice(a.indexOf(c), 1)
+-  }
++    // Failure.
++    return t2;
++};
+ 
+-  //Find next vertex and cut edge
+-  function next(a, b, noCut) {
+-    var nextCell, nextVertex, nextDir
+-    for(var i=0; i<2; ++i) {
+-      if(adj[i][b].length > 0) {
+-        nextCell = adj[i][b][0]
+-        nextDir = i
+-        break
++UnitBezier.prototype.solve = function(x, epsilon) {
++    return this.sampleCurveY(this.solveCurveX(x, epsilon));
++};
++
++},{}],453:[function(require,module,exports){
++if (typeof Object.create === 'function') {
++  // implementation from standard node.js 'util' module
++  module.exports = function inherits(ctor, superCtor) {
++    ctor.super_ = superCtor
++    ctor.prototype = Object.create(superCtor.prototype, {
++      constructor: {
++        value: ctor,
++        enumerable: false,
++        writable: true,
++        configurable: true
+       }
++    });
++  };
++} else {
++  // old school shim for old browsers
++  module.exports = function inherits(ctor, superCtor) {
++    ctor.super_ = superCtor
++    var TempCtor = function () {}
++    TempCtor.prototype = superCtor.prototype
++    ctor.prototype = new TempCtor()
++    ctor.prototype.constructor = ctor
++  }
++}
++
++},{}],454:[function(require,module,exports){
++module.exports = function isBuffer(arg) {
++  return arg && typeof arg === 'object'
++    && typeof arg.copy === 'function'
++    && typeof arg.fill === 'function'
++    && typeof arg.readUInt8 === 'function';
++}
++},{}],455:[function(require,module,exports){
++(function (process,global){
++// Copyright Joyent, Inc. and other Node contributors.
++//
++// Permission is hereby granted, free of charge, to any person obtaining a
++// copy of this software and associated documentation files (the
++// "Software"), to deal in the Software without restriction, including
++// without limitation the rights to use, copy, modify, merge, publish,
++// distribute, sublicense, and/or sell copies of the Software, and to permit
++// persons to whom the Software is furnished to do so, subject to the
++// following conditions:
++//
++// The above copyright notice and this permission notice shall be included
++// in all copies or substantial portions of the Software.
++//
++// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
++// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
++// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
++// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
++// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
++// USE OR OTHER DEALINGS IN THE SOFTWARE.
++
++var formatRegExp = /%[sdj%]/g;
++exports.format = function(f) {
++  if (!isString(f)) {
++    var objects = [];
++    for (var i = 0; i < arguments.length; i++) {
++      objects.push(inspect(arguments[i]));
+     }
+-    nextVertex = nextCell[nextDir^1]
++    return objects.join(' ');
++  }
+ 
+-    for(var dir=0; dir<2; ++dir) {
+-      var nbhd = adj[dir][b]
+-      for(var k=0; k<nbhd.length; ++k) {
+-        var e = nbhd[k]
+-        var p = e[dir^1]
+-        var cmp = compareAngle(
+-            positions[a], 
+-            positions[b], 
+-            positions[nextVertex],
+-            positions[p])
+-        if(cmp > 0) {
+-          nextCell = e
+-          nextVertex = p
+-          nextDir = dir
++  var i = 1;
++  var args = arguments;
++  var len = args.length;
++  var str = String(f).replace(formatRegExp, function(x) {
++    if (x === '%%') return '%';
++    if (i >= len) return x;
++    switch (x) {
++      case '%s': return String(args[i++]);
++      case '%d': return Number(args[i++]);
++      case '%j':
++        try {
++          return JSON.stringify(args[i++]);
++        } catch (_) {
++          return '[Circular]';
+         }
+-      }
+-    }
+-    if(noCut) {
+-      return nextVertex
++      default:
++        return x;
+     }
+-    if(nextCell) {
+-      cut(nextCell, nextDir)
++  });
++  for (var x = args[i]; i < len; x = args[++i]) {
++    if (isNull(x) || !isObject(x)) {
++      str += ' ' + x;
++    } else {
++      str += ' ' + inspect(x);
+     }
+-    return nextVertex
+   }
++  return str;
++};
+ 
+-  function extractCycle(v, dir) {
+-    var e0 = adj[dir][v][0]
+-    var cycle = [v]
+-    cut(e0, dir)
+-    var u = e0[dir^1]
+-    var d0 = dir
+-    while(true) {
+-      while(u !== v) {
+-        cycle.push(u)
+-        u = next(cycle[cycle.length-2], u, false)
+-      }
+-      if(adj[0][v].length + adj[1][v].length === 0) {
+-        break
+-      }
+-      var a = cycle[cycle.length-1]
+-      var b = v
+-      var c = cycle[1]
+-      var d = next(a, b, true)
+-      if(compareAngle(positions[a], positions[b], positions[c], positions[d]) < 0) {
+-        break
+-      }
+-      cycle.push(v)
+-      u = next(a, b)
+-    }
+-    return cycle
++
++// Mark that a method should not be used.
++// Returns a modified function which warns once by default.
++// If --no-deprecation is set, then it is a no-op.
++exports.deprecate = function(fn, msg) {
++  // Allow for deprecating things in the process of starting up.
++  if (isUndefined(global.process)) {
++    return function() {
++      return exports.deprecate(fn, msg).apply(this, arguments);
++    };
+   }
+ 
+-  function shouldGlue(pcycle, ncycle) {
+-    return (ncycle[1] === ncycle[ncycle.length-1])
++  if (process.noDeprecation === true) {
++    return fn;
+   }
+ 
+-  for(var i=0; i<numVertices; ++i) {
+-    for(var j=0; j<2; ++j) {
+-      var pcycle = []
+-      while(adj[j][i].length > 0) {
+-        var ni = adj[0][i].length
+-        var ncycle = extractCycle(i,j)
+-        if(shouldGlue(pcycle, ncycle)) {
+-          //Glue together trivial cycles
+-          pcycle.push.apply(pcycle, ncycle)
+-        } else {
+-          if(pcycle.length > 0) {
+-            cycles.push(pcycle)
+-          }
+-          pcycle = ncycle
+-        }
+-      }
+-      if(pcycle.length > 0) {
+-        cycles.push(pcycle)
++  var warned = false;
++  function deprecated() {
++    if (!warned) {
++      if (process.throwDeprecation) {
++        throw new Error(msg);
++      } else if (process.traceDeprecation) {
++        console.trace(msg);
++      } else {
++        console.error(msg);
+       }
++      warned = true;
++    }
++    return fn.apply(this, arguments);
++  }
++
++  return deprecated;
++};
++
++
++var debugs = {};
++var debugEnviron;
++exports.debuglog = function(set) {
++  if (isUndefined(debugEnviron))
++    debugEnviron = process.env.NODE_DEBUG || '';
++  set = set.toUpperCase();
++  if (!debugs[set]) {
++    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
++      var pid = process.pid;
++      debugs[set] = function() {
++        var msg = exports.format.apply(exports, arguments);
++        console.error('%s %d: %s', set, pid, msg);
++      };
++    } else {
++      debugs[set] = function() {};
+     }
+   }
+-
+-  //Combine paths and loops together
+-  return cycles
++  return debugs[set];
++};
++
++
++/**
++ * Echos the value of a value. Trys to print the value out
++ * in the best way possible given the different types.
++ *
++ * @param {Object} obj The object to print out.
++ * @param {Object} opts Optional options object that alters the output.
++ */
++/* legacy: obj, showHidden, depth, colors*/
++function inspect(obj, opts) {
++  // default options
++  var ctx = {
++    seen: [],
++    stylize: stylizeNoColor
++  };
++  // legacy...
++  if (arguments.length >= 3) ctx.depth = arguments[2];
++  if (arguments.length >= 4) ctx.colors = arguments[3];
++  if (isBoolean(opts)) {
++    // legacy...
++    ctx.showHidden = opts;
++  } else if (opts) {
++    // got an "options" object
++    exports._extend(ctx, opts);
++  }
++  // set default options
++  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
++  if (isUndefined(ctx.depth)) ctx.depth = 2;
++  if (isUndefined(ctx.colors)) ctx.colors = false;
++  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
++  if (ctx.colors) ctx.stylize = stylizeWithColor;
++  return formatValue(ctx, obj, ctx.depth);
++}
++exports.inspect = inspect;
++
++
++// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
++inspect.colors = {
++  'bold' : [1, 22],
++  'italic' : [3, 23],
++  'underline' : [4, 24],
++  'inverse' : [7, 27],
++  'white' : [37, 39],
++  'grey' : [90, 39],
++  'black' : [30, 39],
++  'blue' : [34, 39],
++  'cyan' : [36, 39],
++  'green' : [32, 39],
++  'magenta' : [35, 39],
++  'red' : [31, 39],
++  'yellow' : [33, 39]
++};
++
++// Don't use 'blue' not visible on cmd.exe
++inspect.styles = {
++  'special': 'cyan',
++  'number': 'yellow',
++  'boolean': 'yellow',
++  'undefined': 'grey',
++  'null': 'bold',
++  'string': 'green',
++  'date': 'magenta',
++  // "name": intentionally not styling
++  'regexp': 'red'
++};
++
++
++function stylizeWithColor(str, styleType) {
++  var style = inspect.styles[styleType];
++
++  if (style) {
++    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
++           '\u001b[' + inspect.colors[style][1] + 'm';
++  } else {
++    return str;
++  }
+ }
+-},{"compare-angle":465}],465:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = compareAngle
+ 
+-var orient = require("robust-orientation")
+-var sgn = require("signum")
+-var twoSum = require("two-sum")
+-var robustProduct = require("robust-product")
+-var robustSum = require("robust-sum")
++function stylizeNoColor(str, styleType) {
++  return str;
++}
+ 
+-function testInterior(a, b, c) {
+-  var x0 = twoSum(a[0], -b[0])
+-  var y0 = twoSum(a[1], -b[1])
+-  var x1 = twoSum(c[0], -b[0])
+-  var y1 = twoSum(c[1], -b[1])
+ 
+-  var d = robustSum(
+-    robustProduct(x0, x1),
+-    robustProduct(y0, y1))
++function arrayToHash(array) {
++  var hash = {};
+ 
+-  return d[d.length-1] >= 0
++  array.forEach(function(val, idx) {
++    hash[val] = true;
++  });
++
++  return hash;
+ }
+ 
+-function compareAngle(a, b, c, d) {
+-  var bcd = orient(b, c, d)
+-  if(bcd === 0) {
+-    //Handle degenerate cases
+-    var sabc = sgn(orient(a, b, c))
+-    var sabd = sgn(orient(a, b, d))
+-    if(sabc === sabd) {
+-      if(sabc === 0) {
+-        var ic = testInterior(a, b, c)
+-        var id = testInterior(a, b, d)
+-        if(ic === id) {
+-          return 0
+-        } else if(ic) {
+-          return 1
+-        } else {
+-          return -1
+-        }
+-      }
+-      return 0
+-    } else if(sabd === 0) {
+-      if(sabc > 0) {
+-        return -1
+-      } else if(testInterior(a, b, d)) {
+-        return -1
+-      } else {
+-        return 1
+-      }
+-    } else if(sabc === 0) {
+-      if(sabd > 0) {
+-        return 1
+-      } else if(testInterior(a, b, c)) {
+-        return 1
+-      } else {
+-        return -1
+-      }
++
++function formatValue(ctx, value, recurseTimes) {
++  // Provide a hook for user-specified inspect functions.
++  // Check that value is an object with an inspect function on it
++  if (ctx.customInspect &&
++      value &&
++      isFunction(value.inspect) &&
++      // Filter out the util module, it's inspect function is special
++      value.inspect !== exports.inspect &&
++      // Also filter out any prototype objects using the circular check.
++      !(value.constructor && value.constructor.prototype === value)) {
++    var ret = value.inspect(recurseTimes, ctx);
++    if (!isString(ret)) {
++      ret = formatValue(ctx, ret, recurseTimes);
+     }
+-    return sgn(sabd - sabc)
++    return ret;
+   }
+-  var abc = orient(a, b, c)
+-  if(abc > 0) {
+-    if(bcd > 0 && orient(a, b, d) > 0) {
+-      return 1
++
++  // Primitive types cannot have properties
++  var primitive = formatPrimitive(ctx, value);
++  if (primitive) {
++    return primitive;
++  }
++
++  // Look up the keys of the object.
++  var keys = Object.keys(value);
++  var visibleKeys = arrayToHash(keys);
++
++  if (ctx.showHidden) {
++    keys = Object.getOwnPropertyNames(value);
++  }
++
++  // IE doesn't make error fields non-enumerable
++  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
++  if (isError(value)
++      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
++    return formatError(value);
++  }
++
++  // Some type of object without properties can be shortcutted.
++  if (keys.length === 0) {
++    if (isFunction(value)) {
++      var name = value.name ? ': ' + value.name : '';
++      return ctx.stylize('[Function' + name + ']', 'special');
+     }
+-    return -1
+-  } else if(abc < 0) {
+-    if(bcd > 0 || orient(a, b, d) > 0) {
+-      return 1
++    if (isRegExp(value)) {
++      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
+     }
+-    return -1
+-  } else {
+-    var abd = orient(a, b, d)
+-    if(abd > 0) {
+-      return 1
+-    } else {
+-      if(testInterior(a, b, c)) {
+-        return 1
+-      } else {
+-        return -1
+-      }
++    if (isDate(value)) {
++      return ctx.stylize(Date.prototype.toString.call(value), 'date');
++    }
++    if (isError(value)) {
++      return formatError(value);
+     }
+   }
+-}
+-},{"robust-orientation":439,"robust-product":466,"robust-sum":442,"signum":467,"two-sum":457}],466:[function(require,module,exports){
+-"use strict"
+-
+-var robustSum = require("robust-sum")
+-var robustScale = require("robust-scale")
+ 
+-module.exports = robustProduct
++  var base = '', array = false, braces = ['{', '}'];
+ 
+-function robustProduct(a, b) {
+-  if(a.length === 1) {
+-    return robustScale(b, a[0])
+-  }
+-  if(b.length === 1) {
+-    return robustScale(a, b[0])
++  // Make Array say that they are Array
++  if (isArray(value)) {
++    array = true;
++    braces = ['[', ']'];
+   }
+-  if(a.length === 0 || b.length === 0) {
+-    return [0]
++
++  // Make functions say that they are functions
++  if (isFunction(value)) {
++    var n = value.name ? ': ' + value.name : '';
++    base = ' [Function' + n + ']';
+   }
+-  var r = [0]
+-  if(a.length < b.length) {
+-    for(var i=0; i<a.length; ++i) {
+-      r = robustSum(r, robustScale(b, a[i]))
+-    }
+-  } else {
+-    for(var i=0; i<b.length; ++i) {
+-      r = robustSum(r, robustScale(a, b[i]))
+-    }    
++
++  // Make RegExps say that they are RegExps
++  if (isRegExp(value)) {
++    base = ' ' + RegExp.prototype.toString.call(value);
+   }
+-  return r
+-}
+-},{"robust-scale":440,"robust-sum":442}],467:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = function signum(x) {
+-  if(x < 0) { return -1 }
+-  if(x > 0) { return 1 }
+-  return 0.0
+-}
+-},{}],468:[function(require,module,exports){
+-arguments[4][22][0].apply(exports,arguments)
+-},{"dup":22}],469:[function(require,module,exports){
+-"use strict"
++  // Make dates with properties first say the date
++  if (isDate(value)) {
++    base = ' ' + Date.prototype.toUTCString.call(value);
++  }
+ 
+-var bounds = require("binary-search-bounds")
++  // Make error with message first say the error
++  if (isError(value)) {
++    base = ' ' + formatError(value);
++  }
+ 
+-var NOT_FOUND = 0
+-var SUCCESS = 1
+-var EMPTY = 2
++  if (keys.length === 0 && (!array || value.length == 0)) {
++    return braces[0] + base + braces[1];
++  }
+ 
+-module.exports = createWrapper
++  if (recurseTimes < 0) {
++    if (isRegExp(value)) {
++      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
++    } else {
++      return ctx.stylize('[Object]', 'special');
++    }
++  }
+ 
+-function IntervalTreeNode(mid, left, right, leftPoints, rightPoints) {
+-  this.mid = mid
+-  this.left = left
+-  this.right = right
+-  this.leftPoints = leftPoints
+-  this.rightPoints = rightPoints
+-  this.count = (left ? left.count : 0) + (right ? right.count : 0) + leftPoints.length
+-}
++  ctx.seen.push(value);
+ 
+-var proto = IntervalTreeNode.prototype
++  var output;
++  if (array) {
++    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
++  } else {
++    output = keys.map(function(key) {
++      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
++    });
++  }
+ 
+-function copy(a, b) {
+-  a.mid = b.mid
+-  a.left = b.left
+-  a.right = b.right
+-  a.leftPoints = b.leftPoints
+-  a.rightPoints = b.rightPoints
+-  a.count = b.count
+-}
++  ctx.seen.pop();
+ 
+-function rebuild(node, intervals) {
+-  var ntree = createIntervalTree(intervals)
+-  node.mid = ntree.mid
+-  node.left = ntree.left
+-  node.right = ntree.right
+-  node.leftPoints = ntree.leftPoints
+-  node.rightPoints = ntree.rightPoints
+-  node.count = ntree.count
++  return reduceToSingleString(output, base, braces);
+ }
+ 
+-function rebuildWithInterval(node, interval) {
+-  var intervals = node.intervals([])
+-  intervals.push(interval)
+-  rebuild(node, intervals)    
+-}
+ 
+-function rebuildWithoutInterval(node, interval) {
+-  var intervals = node.intervals([])
+-  var idx = intervals.indexOf(interval)
+-  if(idx < 0) {
+-    return NOT_FOUND
++function formatPrimitive(ctx, value) {
++  if (isUndefined(value))
++    return ctx.stylize('undefined', 'undefined');
++  if (isString(value)) {
++    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
++                                             .replace(/'/g, "\\'")
++                                             .replace(/\\"/g, '"') + '\'';
++    return ctx.stylize(simple, 'string');
+   }
+-  intervals.splice(idx, 1)
+-  rebuild(node, intervals)
+-  return SUCCESS
++  if (isNumber(value))
++    return ctx.stylize('' + value, 'number');
++  if (isBoolean(value))
++    return ctx.stylize('' + value, 'boolean');
++  // For some reason typeof null is "object", so special case here.
++  if (isNull(value))
++    return ctx.stylize('null', 'null');
+ }
+ 
+-proto.intervals = function(result) {
+-  result.push.apply(result, this.leftPoints)
+-  if(this.left) {
+-    this.left.intervals(result)
+-  }
+-  if(this.right) {
+-    this.right.intervals(result)
+-  }
+-  return result
++
++function formatError(value) {
++  return '[' + Error.prototype.toString.call(value) + ']';
+ }
+ 
+-proto.insert = function(interval) {
+-  var weight = this.count - this.leftPoints.length
+-  this.count += 1
+-  if(interval[1] < this.mid) {
+-    if(this.left) {
+-      if(4*(this.left.count+1) > 3*(weight+1)) {
+-        rebuildWithInterval(this, interval)
+-      } else {
+-        this.left.insert(interval)
+-      }
+-    } else {
+-      this.left = createIntervalTree([interval])
+-    }
+-  } else if(interval[0] > this.mid) {
+-    if(this.right) {
+-      if(4*(this.right.count+1) > 3*(weight+1)) {
+-        rebuildWithInterval(this, interval)
+-      } else {
+-        this.right.insert(interval)
+-      }
++
++function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
++  var output = [];
++  for (var i = 0, l = value.length; i < l; ++i) {
++    if (hasOwnProperty(value, String(i))) {
++      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
++          String(i), true));
+     } else {
+-      this.right = createIntervalTree([interval])
++      output.push('');
+     }
+-  } else {
+-    var l = bounds.ge(this.leftPoints, interval, compareBegin)
+-    var r = bounds.ge(this.rightPoints, interval, compareEnd)
+-    this.leftPoints.splice(l, 0, interval)
+-    this.rightPoints.splice(r, 0, interval)
+   }
++  keys.forEach(function(key) {
++    if (!key.match(/^\d+$/)) {
++      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
++          key, true));
++    }
++  });
++  return output;
+ }
+ 
+-proto.remove = function(interval) {
+-  var weight = this.count - this.leftPoints
+-  if(interval[1] < this.mid) {
+-    if(!this.left) {
+-      return NOT_FOUND
+-    }
+-    var rw = this.right ? this.right.count : 0
+-    if(4 * rw > 3 * (weight-1)) {
+-      return rebuildWithoutInterval(this, interval)
+-    }
+-    var r = this.left.remove(interval)
+-    if(r === EMPTY) {
+-      this.left = null
+-      this.count -= 1
+-      return SUCCESS
+-    } else if(r === SUCCESS) {
+-      this.count -= 1
+-    }
+-    return r
+-  } else if(interval[0] > this.mid) {
+-    if(!this.right) {
+-      return NOT_FOUND
+-    }
+-    var lw = this.left ? this.left.count : 0
+-    if(4 * lw > 3 * (weight-1)) {
+-      return rebuildWithoutInterval(this, interval)
+-    }
+-    var r = this.right.remove(interval)
+-    if(r === EMPTY) {
+-      this.right = null
+-      this.count -= 1
+-      return SUCCESS
+-    } else if(r === SUCCESS) {
+-      this.count -= 1
++
++function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
++  var name, str, desc;
++  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
++  if (desc.get) {
++    if (desc.set) {
++      str = ctx.stylize('[Getter/Setter]', 'special');
++    } else {
++      str = ctx.stylize('[Getter]', 'special');
+     }
+-    return r
+   } else {
+-    if(this.count === 1) {
+-      if(this.leftPoints[0] === interval) {
+-        return EMPTY
+-      } else {
+-        return NOT_FOUND
+-      }
++    if (desc.set) {
++      str = ctx.stylize('[Setter]', 'special');
+     }
+-    if(this.leftPoints.length === 1 && this.leftPoints[0] === interval) {
+-      if(this.left && this.right) {
+-        var p = this
+-        var n = this.left
+-        while(n.right) {
+-          p = n
+-          n = n.right
+-        }
+-        if(p === this) {
+-          n.right = this.right
+-        } else {
+-          var l = this.left
+-          var r = this.right
+-          p.count -= n.count
+-          p.right = n.left
+-          n.left = l
+-          n.right = r
+-        }
+-        copy(this, n)
+-        this.count = (this.left?this.left.count:0) + (this.right?this.right.count:0) + this.leftPoints.length
+-      } else if(this.left) {
+-        copy(this, this.left)
++  }
++  if (!hasOwnProperty(visibleKeys, key)) {
++    name = '[' + key + ']';
++  }
++  if (!str) {
++    if (ctx.seen.indexOf(desc.value) < 0) {
++      if (isNull(recurseTimes)) {
++        str = formatValue(ctx, desc.value, null);
+       } else {
+-        copy(this, this.right)
+-      }
+-      return SUCCESS
+-    }
+-    for(var l = bounds.ge(this.leftPoints, interval, compareBegin); l<this.leftPoints.length; ++l) {
+-      if(this.leftPoints[l][0] !== interval[0]) {
+-        break
++        str = formatValue(ctx, desc.value, recurseTimes - 1);
+       }
+-      if(this.leftPoints[l] === interval) {
+-        this.count -= 1
+-        this.leftPoints.splice(l, 1)
+-        for(var r = bounds.ge(this.rightPoints, interval, compareEnd); r<this.rightPoints.length; ++r) {
+-          if(this.rightPoints[r][1] !== interval[1]) {
+-            break
+-          } else if(this.rightPoints[r] === interval) {
+-            this.rightPoints.splice(r, 1)
+-            return SUCCESS
+-          }
++      if (str.indexOf('\n') > -1) {
++        if (array) {
++          str = str.split('\n').map(function(line) {
++            return '  ' + line;
++          }).join('\n').substr(2);
++        } else {
++          str = '\n' + str.split('\n').map(function(line) {
++            return '   ' + line;
++          }).join('\n');
+         }
+       }
++    } else {
++      str = ctx.stylize('[Circular]', 'special');
+     }
+-    return NOT_FOUND
+   }
+-}
+-
+-function reportLeftRange(arr, hi, cb) {
+-  for(var i=0; i<arr.length && arr[i][0] <= hi; ++i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
++  if (isUndefined(name)) {
++    if (array && key.match(/^\d+$/)) {
++      return str;
++    }
++    name = JSON.stringify('' + key);
++    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
++      name = name.substr(1, name.length - 2);
++      name = ctx.stylize(name, 'name');
++    } else {
++      name = name.replace(/'/g, "\\'")
++                 .replace(/\\"/g, '"')
++                 .replace(/(^"|"$)/g, "'");
++      name = ctx.stylize(name, 'string');
++    }
+   }
+-}
+ 
+-function reportRightRange(arr, lo, cb) {
+-  for(var i=arr.length-1; i>=0 && arr[i][1] >= lo; --i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
+-  }
++  return name + ': ' + str;
+ }
+ 
+-function reportRange(arr, cb) {
+-  for(var i=0; i<arr.length; ++i) {
+-    var r = cb(arr[i])
+-    if(r) { return r }
+-  }
+-}
+ 
+-proto.queryPoint = function(x, cb) {
+-  if(x < this.mid) {
+-    if(this.left) {
+-      var r = this.left.queryPoint(x, cb)
+-      if(r) { return r }
+-    }
+-    return reportLeftRange(this.leftPoints, x, cb)
+-  } else if(x > this.mid) {
+-    if(this.right) {
+-      var r = this.right.queryPoint(x, cb)
+-      if(r) { return r }
+-    }
+-    return reportRightRange(this.rightPoints, x, cb)
+-  } else {
+-    return reportRange(this.leftPoints, cb)
+-  }
+-}
++function reduceToSingleString(output, base, braces) {
++  var numLinesEst = 0;
++  var length = output.reduce(function(prev, cur) {
++    numLinesEst++;
++    if (cur.indexOf('\n') >= 0) numLinesEst++;
++    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
++  }, 0);
+ 
+-proto.queryInterval = function(lo, hi, cb) {
+-  if(lo < this.mid && this.left) {
+-    var r = this.left.queryInterval(lo, hi, cb)
+-    if(r) { return r }
+-  }
+-  if(hi > this.mid && this.right) {
+-    var r = this.right.queryInterval(lo, hi, cb)
+-    if(r) { return r }
+-  }
+-  if(hi < this.mid) {
+-    return reportLeftRange(this.leftPoints, hi, cb)
+-  } else if(lo > this.mid) {
+-    return reportRightRange(this.rightPoints, lo, cb)
+-  } else {
+-    return reportRange(this.leftPoints, cb)
++  if (length > 60) {
++    return braces[0] +
++           (base === '' ? '' : base + '\n ') +
++           ' ' +
++           output.join(',\n  ') +
++           ' ' +
++           braces[1];
+   }
+-}
+ 
+-function compareNumbers(a, b) {
+-  return a - b
++  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
+ }
+ 
+-function compareBegin(a, b) {
+-  var d = a[0] - b[0]
+-  if(d) { return d }
+-  return a[1] - b[1]
++
++// NOTE: These type checking functions intentionally don't use `instanceof`
++// because it is fragile and can be easily faked with `Object.create()`.
++function isArray(ar) {
++  return Array.isArray(ar);
+ }
++exports.isArray = isArray;
+ 
+-function compareEnd(a, b) {
+-  var d = a[1] - b[1]
+-  if(d) { return d }
+-  return a[0] - b[0]
++function isBoolean(arg) {
++  return typeof arg === 'boolean';
+ }
++exports.isBoolean = isBoolean;
+ 
+-function createIntervalTree(intervals) {
+-  if(intervals.length === 0) {
+-    return null
+-  }
+-  var pts = []
+-  for(var i=0; i<intervals.length; ++i) {
+-    pts.push(intervals[i][0], intervals[i][1])
+-  }
+-  pts.sort(compareNumbers)
++function isNull(arg) {
++  return arg === null;
++}
++exports.isNull = isNull;
+ 
+-  var mid = pts[pts.length>>1]
++function isNullOrUndefined(arg) {
++  return arg == null;
++}
++exports.isNullOrUndefined = isNullOrUndefined;
+ 
+-  var leftIntervals = []
+-  var rightIntervals = []
+-  var centerIntervals = []
+-  for(var i=0; i<intervals.length; ++i) {
+-    var s = intervals[i]
+-    if(s[1] < mid) {
+-      leftIntervals.push(s)
+-    } else if(mid < s[0]) {
+-      rightIntervals.push(s)
+-    } else {
+-      centerIntervals.push(s)
+-    }
+-  }
++function isNumber(arg) {
++  return typeof arg === 'number';
++}
++exports.isNumber = isNumber;
+ 
+-  //Split center intervals
+-  var leftPoints = centerIntervals
+-  var rightPoints = centerIntervals.slice()
+-  leftPoints.sort(compareBegin)
+-  rightPoints.sort(compareEnd)
++function isString(arg) {
++  return typeof arg === 'string';
++}
++exports.isString = isString;
+ 
+-  return new IntervalTreeNode(mid, 
+-    createIntervalTree(leftIntervals),
+-    createIntervalTree(rightIntervals),
+-    leftPoints,
+-    rightPoints)
++function isSymbol(arg) {
++  return typeof arg === 'symbol';
+ }
++exports.isSymbol = isSymbol;
+ 
+-//User friendly wrapper that makes it possible to support empty trees
+-function IntervalTree(root) {
+-  this.root = root
++function isUndefined(arg) {
++  return arg === void 0;
+ }
++exports.isUndefined = isUndefined;
+ 
+-var tproto = IntervalTree.prototype
++function isRegExp(re) {
++  return isObject(re) && objectToString(re) === '[object RegExp]';
++}
++exports.isRegExp = isRegExp;
+ 
+-tproto.insert = function(interval) {
+-  if(this.root) {
+-    this.root.insert(interval)
+-  } else {
+-    this.root = new IntervalTreeNode(interval[0], null, null, [interval], [interval])
+-  }
++function isObject(arg) {
++  return typeof arg === 'object' && arg !== null;
+ }
++exports.isObject = isObject;
+ 
+-tproto.remove = function(interval) {
+-  if(this.root) {
+-    var r = this.root.remove(interval)
+-    if(r === EMPTY) {
+-      this.root = null
+-    }
+-    return r !== NOT_FOUND
+-  }
+-  return false
++function isDate(d) {
++  return isObject(d) && objectToString(d) === '[object Date]';
+ }
++exports.isDate = isDate;
+ 
+-tproto.queryPoint = function(p, cb) {
+-  if(this.root) {
+-    return this.root.queryPoint(p, cb)
+-  }
++function isError(e) {
++  return isObject(e) &&
++      (objectToString(e) === '[object Error]' || e instanceof Error);
+ }
++exports.isError = isError;
+ 
+-tproto.queryInterval = function(lo, hi, cb) {
+-  if(lo <= hi && this.root) {
+-    return this.root.queryInterval(lo, hi, cb)
+-  }
++function isFunction(arg) {
++  return typeof arg === 'function';
+ }
++exports.isFunction = isFunction;
+ 
+-Object.defineProperty(tproto, "count", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root.count
+-    }
+-    return 0
+-  }
+-})
++function isPrimitive(arg) {
++  return arg === null ||
++         typeof arg === 'boolean' ||
++         typeof arg === 'number' ||
++         typeof arg === 'string' ||
++         typeof arg === 'symbol' ||  // ES6 symbol
++         typeof arg === 'undefined';
++}
++exports.isPrimitive = isPrimitive;
+ 
+-Object.defineProperty(tproto, "intervals", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root.intervals([])
+-    }
+-    return []
+-  }
+-})
++exports.isBuffer = require('./support/isBuffer');
+ 
+-function createWrapper(intervals) {
+-  if(!intervals || intervals.length === 0) {
+-    return new IntervalTree(null)
+-  }
+-  return new IntervalTree(createIntervalTree(intervals))
++function objectToString(o) {
++  return Object.prototype.toString.call(o);
+ }
+ 
+-},{"binary-search-bounds":468}],470:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = orderSegments
++function pad(n) {
++  return n < 10 ? '0' + n.toString(10) : n.toString(10);
++}
+ 
+-var orient = require("robust-orientation")
+ 
+-function horizontalOrder(a, b) {
+-  var bl, br
+-  if(b[0][0] < b[1][0]) {
+-    bl = b[0]
+-    br = b[1]
+-  } else if(b[0][0] > b[1][0]) {
+-    bl = b[1]
+-    br = b[0]
+-  } else {
+-    var alo = Math.min(a[0][1], a[1][1])
+-    var ahi = Math.max(a[0][1], a[1][1])
+-    var blo = Math.min(b[0][1], b[1][1])
+-    var bhi = Math.max(b[0][1], b[1][1])
+-    if(ahi < blo) {
+-      return ahi - blo
+-    }
+-    if(alo > bhi) {
+-      return alo - bhi
+-    }
+-    return ahi - bhi
+-  }
+-  var al, ar
+-  if(a[0][1] < a[1][1]) {
+-    al = a[0]
+-    ar = a[1]
+-  } else {
+-    al = a[1]
+-    ar = a[0]
+-  }
+-  var d = orient(br, bl, al)
+-  if(d) {
+-    return d
+-  }
+-  d = orient(br, bl, ar)
+-  if(d) {
+-    return d
+-  }
+-  return ar - br
+-}
++var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
++              'Oct', 'Nov', 'Dec'];
+ 
+-function orderSegments(b, a) {
+-  var al, ar
+-  if(a[0][0] < a[1][0]) {
+-    al = a[0]
+-    ar = a[1]
+-  } else if(a[0][0] > a[1][0]) {
+-    al = a[1]
+-    ar = a[0]
+-  } else {
+-    return horizontalOrder(a, b)
+-  }
+-  var bl, br
+-  if(b[0][0] < b[1][0]) {
+-    bl = b[0]
+-    br = b[1]
+-  } else if(b[0][0] > b[1][0]) {
+-    bl = b[1]
+-    br = b[0]
+-  } else {
+-    return -horizontalOrder(b, a)
+-  }
+-  var d1 = orient(al, ar, br)
+-  var d2 = orient(al, ar, bl)
+-  if(d1 < 0) {
+-    if(d2 <= 0) {
+-      return d1
+-    }
+-  } else if(d1 > 0) {
+-    if(d2 >= 0) {
+-      return d1
+-    }
+-  } else if(d2) {
+-    return d2
+-  }
+-  d1 = orient(br, bl, ar)
+-  d2 = orient(br, bl, al)
+-  if(d1 < 0) {
+-    if(d2 <= 0) {
+-      return d1
+-    }
+-  } else if(d1 > 0) {
+-    if(d2 >= 0) {
+-      return d1
+-    }
+-  } else if(d2) {
+-    return d2
+-  }
+-  return ar[0] - br[0]
++// 26 Feb 16:19:34
++function timestamp() {
++  var d = new Date();
++  var time = [pad(d.getHours()),
++              pad(d.getMinutes()),
++              pad(d.getSeconds())].join(':');
++  return [d.getDate(), months[d.getMonth()], time].join(' ');
+ }
+-},{"robust-orientation":439}],471:[function(require,module,exports){
+-"use strict"
+ 
+-module.exports = createRBTree
+ 
+-var RED   = 0
+-var BLACK = 1
++// log is just a thin wrapper to console.log that prepends a timestamp
++exports.log = function() {
++  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
++};
+ 
+-function RBNode(color, key, value, left, right, count) {
+-  this._color = color
+-  this.key = key
+-  this.value = value
+-  this.left = left
+-  this.right = right
+-  this._count = count
+-}
+ 
+-function cloneNode(node) {
+-  return new RBNode(node._color, node.key, node.value, node.left, node.right, node._count)
+-}
++/**
++ * Inherit the prototype methods from one constructor into another.
++ *
++ * The Function.prototype.inherits from lang.js rewritten as a standalone
++ * function (not on Function.prototype). NOTE: If this file is to be loaded
++ * during bootstrapping this function needs to be rewritten using some native
++ * functions as prototype setup using normal JavaScript does not work as
++ * expected during bootstrapping (see mirror.js in r114903).
++ *
++ * @param {function} ctor Constructor function which needs to inherit the
++ *     prototype.
++ * @param {function} superCtor Constructor function to inherit prototype from.
++ */
++exports.inherits = require('inherits');
+ 
+-function repaint(color, node) {
+-  return new RBNode(color, node.key, node.value, node.left, node.right, node._count)
+-}
++exports._extend = function(origin, add) {
++  // Don't do anything if add isn't an object
++  if (!add || !isObject(add)) return origin;
+ 
+-function recount(node) {
+-  node._count = 1 + (node.left ? node.left._count : 0) + (node.right ? node.right._count : 0)
+-}
++  var keys = Object.keys(add);
++  var i = keys.length;
++  while (i--) {
++    origin[keys[i]] = add[keys[i]];
++  }
++  return origin;
++};
+ 
+-function RedBlackTree(compare, root) {
+-  this._compare = compare
+-  this.root = root
++function hasOwnProperty(obj, prop) {
++  return Object.prototype.hasOwnProperty.call(obj, prop);
+ }
+ 
+-var proto = RedBlackTree.prototype
++}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
++},{"./support/isBuffer":454,"_process":403,"inherits":453}],456:[function(require,module,exports){
++module.exports.VectorTile = require('./lib/vectortile.js');
++module.exports.VectorTileFeature = require('./lib/vectortilefeature.js');
++module.exports.VectorTileLayer = require('./lib/vectortilelayer.js');
+ 
+-Object.defineProperty(proto, "keys", {
+-  get: function() {
+-    var result = []
+-    this.forEach(function(k,v) {
+-      result.push(k)
+-    })
+-    return result
+-  }
+-})
++},{"./lib/vectortile.js":457,"./lib/vectortilefeature.js":458,"./lib/vectortilelayer.js":459}],457:[function(require,module,exports){
++'use strict';
+ 
+-Object.defineProperty(proto, "values", {
+-  get: function() {
+-    var result = []
+-    this.forEach(function(k,v) {
+-      result.push(v)
+-    })
+-    return result
+-  }
+-})
++var VectorTileLayer = require('./vectortilelayer');
+ 
+-//Returns the number of nodes in the tree
+-Object.defineProperty(proto, "length", {
+-  get: function() {
+-    if(this.root) {
+-      return this.root._count
+-    }
+-    return 0
+-  }
+-})
++module.exports = VectorTile;
+ 
+-//Insert a new item into the tree
+-proto.insert = function(key, value) {
+-  var cmp = this._compare
+-  //Find point to insert new node at
+-  var n = this.root
+-  var n_stack = []
+-  var d_stack = []
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    n_stack.push(n)
+-    d_stack.push(d)
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
+-  }
+-  //Rebuild path to leaf node
+-  n_stack.push(new RBNode(RED, key, value, null, null, 1))
+-  for(var s=n_stack.length-2; s>=0; --s) {
+-    var n = n_stack[s]
+-    if(d_stack[s] <= 0) {
+-      n_stack[s] = new RBNode(n._color, n.key, n.value, n_stack[s+1], n.right, n._count+1)
+-    } else {
+-      n_stack[s] = new RBNode(n._color, n.key, n.value, n.left, n_stack[s+1], n._count+1)
+-    }
+-  }
+-  //Rebalance tree using rotations
+-  //console.log("start insert", key, d_stack)
+-  for(var s=n_stack.length-1; s>1; --s) {
+-    var p = n_stack[s-1]
+-    var n = n_stack[s]
+-    if(p._color === BLACK || n._color === BLACK) {
+-      break
+-    }
+-    var pp = n_stack[s-2]
+-    if(pp.left === p) {
+-      if(p.left === n) {
+-        var y = pp.right
+-        if(y && y._color === RED) {
+-          //console.log("LLr")
+-          p._color = BLACK
+-          pp.right = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("LLb")
+-          pp._color = RED
+-          pp.left = p.right
+-          p._color = BLACK
+-          p.right = pp
+-          n_stack[s-2] = p
+-          n_stack[s-1] = n
+-          recount(pp)
+-          recount(p)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.left === pp) {
+-              ppp.left = p
+-            } else {
+-              ppp.right = p
+-            }
+-          }
+-          break
+-        }
+-      } else {
+-        var y = pp.right
+-        if(y && y._color === RED) {
+-          //console.log("LRr")
+-          p._color = BLACK
+-          pp.right = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("LRb")
+-          p.right = n.left
+-          pp._color = RED
+-          pp.left = n.right
+-          n._color = BLACK
+-          n.left = p
+-          n.right = pp
+-          n_stack[s-2] = n
+-          n_stack[s-1] = p
+-          recount(pp)
+-          recount(p)
+-          recount(n)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.left === pp) {
+-              ppp.left = n
+-            } else {
+-              ppp.right = n
+-            }
+-          }
+-          break
+-        }
+-      }
+-    } else {
+-      if(p.right === n) {
+-        var y = pp.left
+-        if(y && y._color === RED) {
+-          //console.log("RRr", y.key)
+-          p._color = BLACK
+-          pp.left = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("RRb")
+-          pp._color = RED
+-          pp.right = p.left
+-          p._color = BLACK
+-          p.left = pp
+-          n_stack[s-2] = p
+-          n_stack[s-1] = n
+-          recount(pp)
+-          recount(p)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.right === pp) {
+-              ppp.right = p
+-            } else {
+-              ppp.left = p
+-            }
+-          }
+-          break
+-        }
+-      } else {
+-        var y = pp.left
+-        if(y && y._color === RED) {
+-          //console.log("RLr")
+-          p._color = BLACK
+-          pp.left = repaint(BLACK, y)
+-          pp._color = RED
+-          s -= 1
+-        } else {
+-          //console.log("RLb")
+-          p.left = n.right
+-          pp._color = RED
+-          pp.right = n.left
+-          n._color = BLACK
+-          n.right = p
+-          n.left = pp
+-          n_stack[s-2] = n
+-          n_stack[s-1] = p
+-          recount(pp)
+-          recount(p)
+-          recount(n)
+-          if(s >= 3) {
+-            var ppp = n_stack[s-3]
+-            if(ppp.right === pp) {
+-              ppp.right = n
+-            } else {
+-              ppp.left = n
+-            }
+-          }
+-          break
+-        }
+-      }
++function VectorTile(pbf, end) {
++    this.layers = pbf.readFields(readTile, {}, end);
++}
++
++function readTile(tag, layers, pbf) {
++    if (tag === 3) {
++        var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);
++        if (layer.length) layers[layer.name] = layer;
+     }
+-  }
+-  //Return new tree
+-  n_stack[0]._color = BLACK
+-  return new RedBlackTree(cmp, n_stack[0])
+ }
+ 
+ 
+-//Visit all nodes inorder
+-function doVisitFull(visit, node) {
+-  if(node.left) {
+-    var v = doVisitFull(visit, node.left)
+-    if(v) { return v }
+-  }
+-  var v = visit(node.key, node.value)
+-  if(v) { return v }
+-  if(node.right) {
+-    return doVisitFull(visit, node.right)
+-  }
++},{"./vectortilelayer":459}],458:[function(require,module,exports){
++'use strict';
++
++var Point = require('point-geometry');
++
++module.exports = VectorTileFeature;
++
++function VectorTileFeature(pbf, end, extent, keys, values) {
++    // Public
++    this.properties = {};
++    this.extent = extent;
++    this.type = 0;
++
++    // Private
++    this._pbf = pbf;
++    this._geometry = -1;
++    this._keys = keys;
++    this._values = values;
++
++    pbf.readFields(readFeature, this, end);
+ }
+ 
+-//Visit half nodes in order
+-function doVisitHalf(lo, compare, visit, node) {
+-  var l = compare(lo, node.key)
+-  if(l <= 0) {
+-    if(node.left) {
+-      var v = doVisitHalf(lo, compare, visit, node.left)
+-      if(v) { return v }
+-    }
+-    var v = visit(node.key, node.value)
+-    if(v) { return v }
+-  }
+-  if(node.right) {
+-    return doVisitHalf(lo, compare, visit, node.right)
+-  }
++function readFeature(tag, feature, pbf) {
++    if (tag == 1) feature.id = pbf.readVarint();
++    else if (tag == 2) readTag(pbf, feature);
++    else if (tag == 3) feature.type = pbf.readVarint();
++    else if (tag == 4) feature._geometry = pbf.pos;
+ }
+ 
+-//Visit all nodes within a range
+-function doVisit(lo, hi, compare, visit, node) {
+-  var l = compare(lo, node.key)
+-  var h = compare(hi, node.key)
+-  var v
+-  if(l <= 0) {
+-    if(node.left) {
+-      v = doVisit(lo, hi, compare, visit, node.left)
+-      if(v) { return v }
+-    }
+-    if(h > 0) {
+-      v = visit(node.key, node.value)
+-      if(v) { return v }
++function readTag(pbf, feature) {
++    var end = pbf.readVarint() + pbf.pos;
++
++    while (pbf.pos < end) {
++        var key = feature._keys[pbf.readVarint()],
++            value = feature._values[pbf.readVarint()];
++        feature.properties[key] = value;
+     }
+-  }
+-  if(h > 0 && node.right) {
+-    return doVisit(lo, hi, compare, visit, node.right)
+-  }
+ }
+ 
++VectorTileFeature.types = ['Unknown', 'Point', 'LineString', 'Polygon'];
+ 
+-proto.forEach = function rbTreeForEach(visit, lo, hi) {
+-  if(!this.root) {
+-    return
+-  }
+-  switch(arguments.length) {
+-    case 1:
+-      return doVisitFull(visit, this.root)
+-    break
++VectorTileFeature.prototype.loadGeometry = function() {
++    var pbf = this._pbf;
++    pbf.pos = this._geometry;
+ 
+-    case 2:
+-      return doVisitHalf(lo, this._compare, visit, this.root)
+-    break
++    var end = pbf.readVarint() + pbf.pos,
++        cmd = 1,
++        length = 0,
++        x = 0,
++        y = 0,
++        lines = [],
++        line;
+ 
+-    case 3:
+-      if(this._compare(lo, hi) >= 0) {
+-        return
+-      }
+-      return doVisit(lo, hi, this._compare, visit, this.root)
+-    break
+-  }
+-}
++    while (pbf.pos < end) {
++        if (!length) {
++            var cmdLen = pbf.readVarint();
++            cmd = cmdLen & 0x7;
++            length = cmdLen >> 3;
++        }
+ 
+-//First item in list
+-Object.defineProperty(proto, "begin", {
+-  get: function() {
+-    var stack = []
+-    var n = this.root
+-    while(n) {
+-      stack.push(n)
+-      n = n.left
++        length--;
++
++        if (cmd === 1 || cmd === 2) {
++            x += pbf.readSVarint();
++            y += pbf.readSVarint();
++
++            if (cmd === 1) { // moveTo
++                if (line) lines.push(line);
++                line = [];
++            }
++
++            line.push(new Point(x, y));
++
++        } else if (cmd === 7) {
++
++            // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90
++            if (line) {
++                line.push(line[0].clone()); // closePolygon
++            }
++
++        } else {
++            throw new Error('unknown command ' + cmd);
++        }
+     }
+-    return new RedBlackTreeIterator(this, stack)
+-  }
+-})
+ 
+-//Last item in list
+-Object.defineProperty(proto, "end", {
+-  get: function() {
+-    var stack = []
+-    var n = this.root
+-    while(n) {
+-      stack.push(n)
+-      n = n.right
++    if (line) lines.push(line);
++
++    return lines;
++};
++
++VectorTileFeature.prototype.bbox = function() {
++    var pbf = this._pbf;
++    pbf.pos = this._geometry;
++
++    var end = pbf.readVarint() + pbf.pos,
++        cmd = 1,
++        length = 0,
++        x = 0,
++        y = 0,
++        x1 = Infinity,
++        x2 = -Infinity,
++        y1 = Infinity,
++        y2 = -Infinity;
++
++    while (pbf.pos < end) {
++        if (!length) {
++            var cmdLen = pbf.readVarint();
++            cmd = cmdLen & 0x7;
++            length = cmdLen >> 3;
++        }
++
++        length--;
++
++        if (cmd === 1 || cmd === 2) {
++            x += pbf.readSVarint();
++            y += pbf.readSVarint();
++            if (x < x1) x1 = x;
++            if (x > x2) x2 = x;
++            if (y < y1) y1 = y;
++            if (y > y2) y2 = y;
++
++        } else if (cmd !== 7) {
++            throw new Error('unknown command ' + cmd);
++        }
+     }
+-    return new RedBlackTreeIterator(this, stack)
+-  }
+-})
+ 
+-//Find the ith item in the tree
+-proto.at = function(idx) {
+-  if(idx < 0) {
+-    return new RedBlackTreeIterator(this, [])
+-  }
+-  var n = this.root
+-  var stack = []
+-  while(true) {
+-    stack.push(n)
+-    if(n.left) {
+-      if(idx < n.left._count) {
+-        n = n.left
+-        continue
+-      }
+-      idx -= n.left._count
++    return [x1, y1, x2, y2];
++};
++
++VectorTileFeature.prototype.toGeoJSON = function(x, y, z) {
++    var size = this.extent * Math.pow(2, z),
++        x0 = this.extent * x,
++        y0 = this.extent * y,
++        coords = this.loadGeometry(),
++        type = VectorTileFeature.types[this.type],
++        i, j;
++
++    function project(line) {
++        for (var j = 0; j < line.length; j++) {
++            var p = line[j], y2 = 180 - (p.y + y0) * 360 / size;
++            line[j] = [
++                (p.x + x0) * 360 / size - 180,
++                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
++            ];
++        }
+     }
+-    if(!idx) {
+-      return new RedBlackTreeIterator(this, stack)
++
++    switch (this.type) {
++    case 1:
++        var points = [];
++        for (i = 0; i < coords.length; i++) {
++            points[i] = coords[i][0];
++        }
++        coords = points;
++        project(coords);
++        break;
++
++    case 2:
++        for (i = 0; i < coords.length; i++) {
++            project(coords[i]);
++        }
++        break;
++
++    case 3:
++        coords = classifyRings(coords);
++        for (i = 0; i < coords.length; i++) {
++            for (j = 0; j < coords[i].length; j++) {
++                project(coords[i][j]);
++            }
++        }
++        break;
+     }
+-    idx -= 1
+-    if(n.right) {
+-      if(idx >= n.right._count) {
+-        break
+-      }
+-      n = n.right
++
++    if (coords.length === 1) {
++        coords = coords[0];
+     } else {
+-      break
++        type = 'Multi' + type;
+     }
+-  }
+-  return new RedBlackTreeIterator(this, [])
+-}
+ 
+-proto.ge = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d <= 0) {
+-      last_ptr = stack.length
++    var result = {
++        type: "Feature",
++        geometry: {
++            type: type,
++            coordinates: coords
++        },
++        properties: this.properties
++    };
++
++    if ('id' in this) {
++        result.id = this.id;
+     }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++
++    return result;
++};
++
++// classifies an array of rings into polygons with outer rings and holes
++
++function classifyRings(rings) {
++    var len = rings.length;
++
++    if (len <= 1) return [rings];
++
++    var polygons = [],
++        polygon,
++        ccw;
++
++    for (var i = 0; i < len; i++) {
++        var area = signedArea(rings[i]);
++        if (area === 0) continue;
++
++        if (ccw === undefined) ccw = area < 0;
++
++        if (ccw === area < 0) {
++            if (polygon) polygons.push(polygon);
++            polygon = [rings[i]];
++
++        } else {
++            polygon.push(rings[i]);
++        }
+     }
+-  }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++    if (polygon) polygons.push(polygon);
++
++    return polygons;
+ }
+ 
+-proto.gt = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d < 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d < 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++function signedArea(ring) {
++    var sum = 0;
++    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
++        p1 = ring[i];
++        p2 = ring[j];
++        sum += (p2.x - p1.x) * (p1.y + p2.y);
+     }
+-  }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++    return sum;
+ }
+ 
+-proto.lt = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d > 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++},{"point-geometry":400}],459:[function(require,module,exports){
++'use strict';
++
++var VectorTileFeature = require('./vectortilefeature.js');
++
++module.exports = VectorTileLayer;
++
++function VectorTileLayer(pbf, end) {
++    // Public
++    this.version = 1;
++    this.name = null;
++    this.extent = 4096;
++    this.length = 0;
++
++    // Private
++    this._pbf = pbf;
++    this._keys = [];
++    this._values = [];
++    this._features = [];
++
++    pbf.readFields(readLayer, this, end);
++
++    this.length = this._features.length;
++}
++
++function readLayer(tag, layer, pbf) {
++    if (tag === 15) layer.version = pbf.readVarint();
++    else if (tag === 1) layer.name = pbf.readString();
++    else if (tag === 5) layer.extent = pbf.readVarint();
++    else if (tag === 2) layer._features.push(pbf.pos);
++    else if (tag === 3) layer._keys.push(pbf.readString());
++    else if (tag === 4) layer._values.push(readValueMessage(pbf));
++}
++
++function readValueMessage(pbf) {
++    var value = null,
++        end = pbf.readVarint() + pbf.pos;
++
++    while (pbf.pos < end) {
++        var tag = pbf.readVarint() >> 3;
++
++        value = tag === 1 ? pbf.readString() :
++            tag === 2 ? pbf.readFloat() :
++            tag === 3 ? pbf.readDouble() :
++            tag === 4 ? pbf.readVarint64() :
++            tag === 5 ? pbf.readVarint() :
++            tag === 6 ? pbf.readSVarint() :
++            tag === 7 ? pbf.readBoolean() : null;
+     }
++
++    return value;
++}
++
++// return feature `i` from this layer as a `VectorTileFeature`
++VectorTileLayer.prototype.feature = function(i) {
++    if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');
++
++    this._pbf.pos = this._features[i];
++
++    var end = this._pbf.readVarint() + this._pbf.pos;
++    return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);
++};
++
++},{"./vectortilefeature.js":458}],460:[function(require,module,exports){
++"use strict"
++
++module.exports = createText
++
++var vectorizeText = require("./lib/vtext")
++var defaultCanvas = null
++var defaultContext = null
++
++if(typeof document !== 'undefined') {
++  defaultCanvas = document.createElement('canvas')
++  defaultCanvas.width = 8192
++  defaultCanvas.height = 1024
++  defaultContext = defaultCanvas.getContext("2d")
++}
++
++function createText(str, options) {
++  if((typeof options !== "object") || (options === null)) {
++    options = {}
+   }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
++  return vectorizeText(
++    str,
++    options.canvas || defaultCanvas,
++    options.context || defaultContext,
++    options)
+ }
+ 
+-proto.le = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  var last_ptr = 0
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d >= 0) {
+-      last_ptr = stack.length
+-    }
+-    if(d < 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
++},{"./lib/vtext":461}],461:[function(require,module,exports){
++"use strict"
++
++module.exports = vectorizeText
++module.exports.processPixels = processPixels
++
++var surfaceNets = require('surface-nets')
++var ndarray = require('ndarray')
++var simplify = require('simplify-planar-graph')
++var cleanPSLG = require('clean-pslg')
++var cdt2d = require('cdt2d')
++var toPolygonCrappy = require('planar-graph-to-polyline')
++
++function transformPositions(positions, options, size) {
++  var align = options.textAlign || "start"
++  var baseline = options.textBaseline || "alphabetic"
++
++  var lo = [1<<30, 1<<30]
++  var hi = [0,0]
++  var n = positions.length
++  for(var i=0; i<n; ++i) {
++    var p = positions[i]
++    for(var j=0; j<2; ++j) {
++      lo[j] = Math.min(lo[j], p[j])|0
++      hi[j] = Math.max(hi[j], p[j])|0
+     }
+   }
+-  stack.length = last_ptr
+-  return new RedBlackTreeIterator(this, stack)
+-}
+ 
+-//Finds the item with key if it exists
+-proto.find = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  var stack = []
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    stack.push(n)
+-    if(d === 0) {
+-      return new RedBlackTreeIterator(this, stack)
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
++  var xShift = 0
++  switch(align) {
++    case "center":
++      xShift = -0.5 * (lo[0] + hi[0])
++    break
++
++    case "right":
++    case "end":
++      xShift = -hi[0]
++    break
++
++    case "left":
++    case "start":
++      xShift = -lo[0]
++    break
++
++    default:
++      throw new Error("vectorize-text: Unrecognized textAlign: '" + align + "'")
+   }
+-  return new RedBlackTreeIterator(this, [])
+-}
+ 
+-//Removes item with key from tree
+-proto.remove = function(key) {
+-  var iter = this.find(key)
+-  if(iter) {
+-    return iter.remove()
++  var yShift = 0
++  switch(baseline) {
++    case "hanging":
++    case "top":
++      yShift = -lo[1]
++    break
++
++    case "middle":
++      yShift = -0.5 * (lo[1] + hi[1])
++    break
++
++    case "alphabetic":
++    case "ideographic":
++      yShift = -3 * size
++    break
++
++    case "bottom":
++      yShift = -hi[1]
++    break
++
++    default:
++      throw new Error("vectorize-text: Unrecoginized textBaseline: '" + baseline + "'")
+   }
+-  return this
+-}
+ 
+-//Returns the item at `key`
+-proto.get = function(key) {
+-  var cmp = this._compare
+-  var n = this.root
+-  while(n) {
+-    var d = cmp(key, n.key)
+-    if(d === 0) {
+-      return n.value
+-    }
+-    if(d <= 0) {
+-      n = n.left
+-    } else {
+-      n = n.right
+-    }
++  var scale = 1.0 / size
++  if("lineHeight" in options) {
++    scale *= +options.lineHeight
++  } else if("width" in options) {
++    scale = options.width / (hi[0] - lo[0])
++  } else if("height" in options) {
++    scale = options.height / (hi[1] - lo[1])
+   }
+-  return
+-}
+ 
+-//Iterator for red black tree
+-function RedBlackTreeIterator(tree, stack) {
+-  this.tree = tree
+-  this._stack = stack
++  return positions.map(function(p) {
++    return [ scale * (p[0] + xShift), scale * (p[1] + yShift) ]
++  })
+ }
+ 
+-var iproto = RedBlackTreeIterator.prototype
+-
+-//Test if iterator is valid
+-Object.defineProperty(iproto, "valid", {
+-  get: function() {
+-    return this._stack.length > 0
++function getPixels(canvas, context, str, size) {
++  var width = Math.ceil(context.measureText(str).width + 2*size)|0
++  if(width > 8192) {
++    throw new Error("vectorize-text: String too long (sorry, this will get fixed later)")
++  }
++  var height = 3 * size
++  if(canvas.height < height) {
++    canvas.height = height
+   }
+-})
+ 
+-//Node of the iterator
+-Object.defineProperty(iproto, "node", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1]
+-    }
+-    return null
+-  },
+-  enumerable: true
+-})
++  context.fillStyle = "#000"
++  context.fillRect(0, 0, canvas.width, canvas.height)
+ 
+-//Makes a copy of an iterator
+-iproto.clone = function() {
+-  return new RedBlackTreeIterator(this.tree, this._stack.slice())
++  context.fillStyle = "#fff"
++  context.fillText(str, size, 2*size)
++
++  //Cut pixels from image
++  var pixelData = context.getImageData(0, 0, width, height)
++  var pixels = ndarray(pixelData.data, [height, width, 4])
++
++  return pixels.pick(-1,-1,0).transpose(1,0)
+ }
+ 
+-//Swaps two nodes
+-function swapNode(n, v) {
+-  n.key = v.key
+-  n.value = v.value
+-  n.left = v.left
+-  n.right = v.right
+-  n._color = v._color
+-  n._count = v._count
++function getContour(pixels, doSimplify) {
++  var contour = surfaceNets(pixels, 128)
++  if(doSimplify) {
++    return simplify(contour.cells, contour.positions, 0.25)
++  }
++  return {
++    edges: contour.cells,
++    positions: contour.positions
++  }
+ }
+ 
+-//Fix up a double black node in a tree
+-function fixDoubleBlack(stack) {
+-  var n, p, s, z
+-  for(var i=stack.length-1; i>=0; --i) {
+-    n = stack[i]
+-    if(i === 0) {
+-      n._color = BLACK
+-      return
+-    }
+-    //console.log("visit node:", n.key, i, stack[i].key, stack[i-1].key)
+-    p = stack[i-1]
+-    if(p.left === n) {
+-      //console.log("left child")
+-      s = p.right
+-      if(s.right && s.right._color === RED) {
+-        //console.log("case 1: right sibling child red")
+-        s = p.right = cloneNode(s)
+-        z = s.right = cloneNode(s.right)
+-        p.right = s.left
+-        s.left = p
+-        s.right = z
+-        s._color = p._color
+-        n._color = BLACK
+-        p._color = BLACK
+-        z._color = BLACK
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = s
+-          } else {
+-            pp.right = s
+-          }
+-        }
+-        stack[i-1] = s
+-        return
+-      } else if(s.left && s.left._color === RED) {
+-        //console.log("case 1: left sibling child red")
+-        s = p.right = cloneNode(s)
+-        z = s.left = cloneNode(s.left)
+-        p.right = z.left
+-        s.left = z.right
+-        z.left = p
+-        z.right = s
+-        z._color = p._color
+-        p._color = BLACK
+-        s._color = BLACK
+-        n._color = BLACK
+-        recount(p)
+-        recount(s)
+-        recount(z)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = z
+-          } else {
+-            pp.right = z
+-          }
+-        }
+-        stack[i-1] = z
+-        return
+-      }
+-      if(s._color === BLACK) {
+-        if(p._color === RED) {
+-          //console.log("case 2: black sibling, red parent", p.right.value)
+-          p._color = BLACK
+-          p.right = repaint(RED, s)
+-          return
+-        } else {
+-          //console.log("case 2: black sibling, black parent", p.right.value)
+-          p.right = repaint(RED, s)
+-          continue  
+-        }
+-      } else {
+-        //console.log("case 3: red sibling")
+-        s = cloneNode(s)
+-        p.right = s.left
+-        s.left = p
+-        s._color = p._color
+-        p._color = RED
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.left === p) {
+-            pp.left = s
+-          } else {
+-            pp.right = s
+-          }
+-        }
+-        stack[i-1] = s
+-        stack[i] = p
+-        if(i+1 < stack.length) {
+-          stack[i+1] = n
+-        } else {
+-          stack.push(n)
+-        }
+-        i = i+2
+-      }
+-    } else {
+-      //console.log("right child")
+-      s = p.left
+-      if(s.left && s.left._color === RED) {
+-        //console.log("case 1: left sibling child red", p.value, p._color)
+-        s = p.left = cloneNode(s)
+-        z = s.left = cloneNode(s.left)
+-        p.left = s.right
+-        s.right = p
+-        s.left = z
+-        s._color = p._color
+-        n._color = BLACK
+-        p._color = BLACK
+-        z._color = BLACK
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = s
+-          } else {
+-            pp.left = s
+-          }
+-        }
+-        stack[i-1] = s
+-        return
+-      } else if(s.right && s.right._color === RED) {
+-        //console.log("case 1: right sibling child red")
+-        s = p.left = cloneNode(s)
+-        z = s.right = cloneNode(s.right)
+-        p.left = z.right
+-        s.right = z.left
+-        z.right = p
+-        z.left = s
+-        z._color = p._color
+-        p._color = BLACK
+-        s._color = BLACK
+-        n._color = BLACK
+-        recount(p)
+-        recount(s)
+-        recount(z)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = z
+-          } else {
+-            pp.left = z
+-          }
+-        }
+-        stack[i-1] = z
+-        return
+-      }
+-      if(s._color === BLACK) {
+-        if(p._color === RED) {
+-          //console.log("case 2: black sibling, red parent")
+-          p._color = BLACK
+-          p.left = repaint(RED, s)
+-          return
+-        } else {
+-          //console.log("case 2: black sibling, black parent")
+-          p.left = repaint(RED, s)
+-          continue  
+-        }
+-      } else {
+-        //console.log("case 3: red sibling")
+-        s = cloneNode(s)
+-        p.left = s.right
+-        s.right = p
+-        s._color = p._color
+-        p._color = RED
+-        recount(p)
+-        recount(s)
+-        if(i > 1) {
+-          var pp = stack[i-2]
+-          if(pp.right === p) {
+-            pp.right = s
+-          } else {
+-            pp.left = s
+-          }
++function processPixelsImpl(pixels, options, size, simplify) {
++  //Extract contour
++  var contour = getContour(pixels, simplify)
++
++  //Apply warp to positions
++  var positions = transformPositions(contour.positions, options, size)
++  var edges     = contour.edges
++  var flip = "ccw" === options.orientation
++
++  //Clean up the PSLG, resolve self intersections, etc.
++  cleanPSLG(positions, edges)
++
++  //If triangulate flag passed, triangulate the result
++  if(options.polygons || options.polygon || options.polyline) {
++    var result = toPolygonCrappy(edges, positions)
++    var nresult = new Array(result.length)
++    for(var i=0; i<result.length; ++i) {
++      var loops = result[i]
++      var nloops = new Array(loops.length)
++      for(var j=0; j<loops.length; ++j) {
++        var loop = loops[j]
++        var nloop = new Array(loop.length)
++        for(var k=0; k<loop.length; ++k) {
++          nloop[k] = positions[loop[k]].slice()
+         }
+-        stack[i-1] = s
+-        stack[i] = p
+-        if(i+1 < stack.length) {
+-          stack[i+1] = n
+-        } else {
+-          stack.push(n)
++        if(flip) {
++          nloop.reverse()
+         }
+-        i = i+2
++        nloops[j] = nloop
+       }
++      nresult[i] = nloops
++    }
++    return nresult
++  } else if(options.triangles || options.triangulate || options.triangle) {
++    return {
++      cells: cdt2d(positions, edges, {
++        delaunay: false,
++        exterior: false,
++        interior: true
++      }),
++      positions: positions
++    }
++  } else {
++    return {
++      edges:     edges,
++      positions: positions
+     }
+   }
+ }
+ 
+-//Removes item at iterator from tree
+-iproto.remove = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return this.tree
++function processPixels(pixels, options, size) {
++  try {
++    return processPixelsImpl(pixels, options, size, true)
++  } catch(e) {}
++  try {
++    return processPixelsImpl(pixels, options, size, false)
++  } catch(e) {}
++  if(options.polygons || options.polyline || options.polygon) {
++    return []
+   }
+-  //First copy path to node
+-  var cstack = new Array(stack.length)
+-  var n = stack[stack.length-1]
+-  cstack[cstack.length-1] = new RBNode(n._color, n.key, n.value, n.left, n.right, n._count)
+-  for(var i=stack.length-2; i>=0; --i) {
+-    var n = stack[i]
+-    if(n.left === stack[i+1]) {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
+-    } else {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++  if(options.triangles || options.triangulate || options.triangle) {
++    return {
++      cells: [],
++      positions: []
+     }
+   }
++  return {
++    edges: [],
++    positions: []
++  }
++}
+ 
+-  //Get node
+-  n = cstack[cstack.length-1]
+-  //console.log("start remove: ", n.value)
++function vectorizeText(str, canvas, context, options) {
++  var size = options.size || 64
++  var family = options.font || "normal"
+ 
+-  //If not leaf, then swap with previous node
+-  if(n.left && n.right) {
+-    //console.log("moving to leaf")
++  context.font = size + "px " + family
++  context.textAlign = "start"
++  context.textBaseline = "alphabetic"
++  context.direction = "ltr"
+ 
+-    //First walk to previous leaf
+-    var split = cstack.length
+-    n = n.left
+-    while(n.right) {
+-      cstack.push(n)
+-      n = n.right
+-    }
+-    //Copy path to leaf
+-    var v = cstack[split-1]
+-    cstack.push(new RBNode(n._color, v.key, v.value, n.left, n.right, n._count))
+-    cstack[split-1].key = n.key
+-    cstack[split-1].value = n.value
++  var pixels = getPixels(canvas, context, str, size)
+ 
+-    //Fix up stack
+-    for(var i=cstack.length-2; i>=split; --i) {
+-      n = cstack[i]
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
+-    }
+-    cstack[split-1].left = cstack[split]
++  return processPixels(pixels, options, size)
++}
++
++},{"cdt2d":62,"clean-pslg":71,"ndarray":385,"planar-graph-to-polyline":399,"simplify-planar-graph":433,"surface-nets":440}],462:[function(require,module,exports){
++var Pbf = require('pbf')
++var vtpb = require('./vector-tile-pb')
++var GeoJSONWrapper = require('./lib/geojson_wrapper')
++
++module.exports = fromVectorTileJs
++module.exports.fromVectorTileJs = fromVectorTileJs
++module.exports.fromGeojsonVt = fromGeojsonVt
++module.exports.GeoJSONWrapper = GeoJSONWrapper
++
++/**
++ * Serialize a vector-tile-js-created tile to pbf
++ *
++ * @param {Object} tile
++ * @return {Buffer} uncompressed, pbf-serialized tile data
++ */
++function fromVectorTileJs (tile) {
++  var layers = []
++  for (var l in tile.layers) {
++    layers.push(prepareLayer(tile.layers[l]))
+   }
+-  //console.log("stack=", cstack.map(function(v) { return v.value }))
+ 
+-  //Remove leaf node
+-  n = cstack[cstack.length-1]
+-  if(n._color === RED) {
+-    //Easy case: removing red leaf
+-    //console.log("RED leaf")
+-    var p = cstack[cstack.length-2]
+-    if(p.left === n) {
+-      p.left = null
+-    } else if(p.right === n) {
+-      p.right = null
+-    }
+-    cstack.pop()
+-    for(var i=0; i<cstack.length; ++i) {
+-      cstack[i]._count--
+-    }
+-    return new RedBlackTree(this.tree._compare, cstack[0])
+-  } else {
+-    if(n.left || n.right) {
+-      //Second easy case:  Single child black parent
+-      //console.log("BLACK single child")
+-      if(n.left) {
+-        swapNode(n, n.left)
+-      } else if(n.right) {
+-        swapNode(n, n.right)
+-      }
+-      //Child must be red, so repaint it black to balance color
+-      n._color = BLACK
+-      for(var i=0; i<cstack.length-1; ++i) {
+-        cstack[i]._count--
+-      }
+-      return new RedBlackTree(this.tree._compare, cstack[0])
+-    } else if(cstack.length === 1) {
+-      //Third easy case: root
+-      //console.log("ROOT")
+-      return new RedBlackTree(this.tree._compare, null)
+-    } else {
+-      //Hard case: Repaint n, and then do some nasty stuff
+-      //console.log("BLACK leaf no children")
+-      for(var i=0; i<cstack.length; ++i) {
+-        cstack[i]._count--
+-      }
+-      var parent = cstack[cstack.length-2]
+-      fixDoubleBlack(cstack)
+-      //Fix up links
+-      if(parent.left === n) {
+-        parent.left = null
+-      } else {
+-        parent.right = null
+-      }
+-    }
++  var out = new Pbf()
++  vtpb.tile.write({ layers: layers }, out)
++  return out.finish()
++}
++
++/**
++ * Serialized a geojson-vt-created tile to pbf.
++ *
++ * @param {Object} layers - An object mapping layer names to geojson-vt-created vector tile objects
++ * @return {Buffer} uncompressed, pbf-serialized tile data
++ */
++function fromGeojsonVt (layers) {
++  var l = {}
++  for (var k in layers) {
++    l[k] = new GeoJSONWrapper(layers[k].features)
++    l[k].name = k
+   }
+-  return new RedBlackTree(this.tree._compare, cstack[0])
++  return fromVectorTileJs({layers: l})
+ }
+ 
+-//Returns key
+-Object.defineProperty(iproto, "key", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1].key
+-    }
+-    return
+-  },
+-  enumerable: true
+-})
++/**
++ * Prepare the given layer to be serialized by the auto-generated pbf
++ * serializer by encoding the feature geometry and properties.
++ */
++function prepareLayer (layer) {
++  var preparedLayer = {
++    name: layer.name || '',
++    version: layer.version || 1,
++    extent: layer.extent || 4096,
++    keys: [],
++    values: [],
++    features: []
++  }
+ 
+-//Returns value
+-Object.defineProperty(iproto, "value", {
+-  get: function() {
+-    if(this._stack.length > 0) {
+-      return this._stack[this._stack.length-1].value
+-    }
+-    return
+-  },
+-  enumerable: true
+-})
++  var keycache = {}
++  var valuecache = {}
+ 
++  for (var i = 0; i < layer.length; i++) {
++    var feature = layer.feature(i)
++    feature.geometry = encodeGeometry(feature.loadGeometry())
+ 
+-//Returns the position of this iterator in the sorted list
+-Object.defineProperty(iproto, "index", {
+-  get: function() {
+-    var idx = 0
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      var r = this.tree.root
+-      if(r) {
+-        return r._count
++    var tags = []
++    for (var key in feature.properties) {
++      var keyIndex = keycache[key]
++      if (typeof keyIndex === 'undefined') {
++        preparedLayer.keys.push(key)
++        keyIndex = preparedLayer.keys.length - 1
++        keycache[key] = keyIndex
+       }
+-      return 0
+-    } else if(stack[stack.length-1].left) {
+-      idx = stack[stack.length-1].left._count
+-    }
+-    for(var s=stack.length-2; s>=0; --s) {
+-      if(stack[s+1] === stack[s].right) {
+-        ++idx
+-        if(stack[s].left) {
+-          idx += stack[s].left._count
+-        }
++      var value = wrapValue(feature.properties[key])
++      var valueIndex = valuecache[value.key]
++      if (typeof valueIndex === 'undefined') {
++        preparedLayer.values.push(value)
++        valueIndex = preparedLayer.values.length - 1
++        valuecache[value.key] = valueIndex
+       }
++      tags.push(keyIndex)
++      tags.push(valueIndex)
+     }
+-    return idx
+-  },
+-  enumerable: true
+-})
+ 
+-//Advances iterator to next element in list
+-iproto.next = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return
+-  }
+-  var n = stack[stack.length-1]
+-  if(n.right) {
+-    n = n.right
+-    while(n) {
+-      stack.push(n)
+-      n = n.left
+-    }
+-  } else {
+-    stack.pop()
+-    while(stack.length > 0 && stack[stack.length-1].right === n) {
+-      n = stack[stack.length-1]
+-      stack.pop()
+-    }
++    feature.tags = tags
++    preparedLayer.features.push(feature)
+   }
++
++  return preparedLayer
+ }
+ 
+-//Checks if iterator is at end of tree
+-Object.defineProperty(iproto, "hasNext", {
+-  get: function() {
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      return false
+-    }
+-    if(stack[stack.length-1].right) {
+-      return true
+-    }
+-    for(var s=stack.length-1; s>0; --s) {
+-      if(stack[s-1].left === stack[s]) {
+-        return true
++function command (cmd, length) {
++  return (length << 3) + (cmd & 0x7)
++}
++
++function zigzag (num) {
++  return (num << 1) ^ (num >> 31)
++}
++
++/**
++ * Encode a polygon's geometry into an array ready to be serialized
++ * to mapbox vector tile specified geometry data.
++ *
++ * @param {Array} Rings, each being an array of [x, y] tile-space coordinates
++ * @return {Array} encoded geometry
++ */
++function encodeGeometry (geometry) {
++  var encoded = []
++  var x = 0
++  var y = 0
++  var rings = geometry.length
++  for (var r = 0; r < rings; r++) {
++    var ring = geometry[r]
++    encoded.push(command(1, 1)) // moveto
++    for (var i = 0; i < ring.length; i++) {
++      if (i === 1) {
++        encoded.push(command(2, ring.length - 1)) // lineto
+       }
++      var dx = ring[i].x - x
++      var dy = ring[i].y - y
++      encoded.push(zigzag(dx), zigzag(dy))
++      x += dx
++      y += dy
+     }
+-    return false
+   }
+-})
+ 
+-//Update value
+-iproto.update = function(value) {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    throw new Error("Can't update empty node!")
+-  }
+-  var cstack = new Array(stack.length)
+-  var n = stack[stack.length-1]
+-  cstack[cstack.length-1] = new RBNode(n._color, n.key, value, n.left, n.right, n._count)
+-  for(var i=stack.length-2; i>=0; --i) {
+-    n = stack[i]
+-    if(n.left === stack[i+1]) {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
++  return encoded
++}
++
++/**
++ * Wrap a property value according to its type. The returned object
++ * is of the form { xxxx_value: primitiveValue }, which is what the generated
++ * protobuf serializer expects.
++ */
++function wrapValue (value) {
++  var result
++  var type = typeof value
++  if (type === 'string') {
++    result = { string_value: value }
++  } else if (type === 'boolean') {
++    result = { bool_value: value }
++  } else if (type === 'number') {
++    if (value % 1 !== 0) {
++      result = { double_value: value }
++    } else if (value < 0) {
++      result = { sint_value: value }
+     } else {
+-      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
++      result = { uint_value: value }
+     }
++  } else {
++    value = JSON.stringify(value)
++    result = { string_value: value }
+   }
+-  return new RedBlackTree(this.tree._compare, cstack[0])
++
++  result.key = type + ':' + value
++  return result
+ }
+ 
+-//Moves iterator backward one element
+-iproto.prev = function() {
+-  var stack = this._stack
+-  if(stack.length === 0) {
+-    return
+-  }
+-  var n = stack[stack.length-1]
+-  if(n.left) {
+-    n = n.left
+-    while(n) {
+-      stack.push(n)
+-      n = n.right
+-    }
+-  } else {
+-    stack.pop()
+-    while(stack.length > 0 && stack[stack.length-1].left === n) {
+-      n = stack[stack.length-1]
+-      stack.pop()
++},{"./lib/geojson_wrapper":463,"./vector-tile-pb":464,"pbf":394}],463:[function(require,module,exports){
++'use strict'
++
++var Point = require('point-geometry')
++var VectorTileFeature = require('vector-tile').VectorTileFeature
++
++module.exports = GeoJSONWrapper
++
++// conform to vectortile api
++function GeoJSONWrapper (features) {
++  this.features = features
++  this.length = features.length
++}
++
++GeoJSONWrapper.prototype.feature = function (i) {
++  return new FeatureWrapper(this.features[i])
++}
++
++function FeatureWrapper (feature) {
++  this.id = typeof feature.id === 'number' ? feature.id : undefined
++  this.type = feature.type
++  this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry
++  this.properties = feature.tags
++  this.extent = 4096
++}
++
++FeatureWrapper.prototype.loadGeometry = function () {
++  var rings = this.rawGeometry
++  this.geometry = []
++
++  for (var i = 0; i < rings.length; i++) {
++    var ring = rings[i]
++    var newRing = []
++    for (var j = 0; j < ring.length; j++) {
++      newRing.push(new Point(ring[j][0], ring[j][1]))
+     }
++    this.geometry.push(newRing)
+   }
++  return this.geometry
+ }
+ 
+-//Checks if iterator is at start of tree
+-Object.defineProperty(iproto, "hasPrev", {
+-  get: function() {
+-    var stack = this._stack
+-    if(stack.length === 0) {
+-      return false
+-    }
+-    if(stack[stack.length-1].left) {
+-      return true
+-    }
+-    for(var s=stack.length-1; s>0; --s) {
+-      if(stack[s-1].right === stack[s]) {
+-        return true
+-      }
++FeatureWrapper.prototype.bbox = function () {
++  if (!this.geometry) this.loadGeometry()
++
++  var rings = this.geometry
++  var x1 = Infinity
++  var x2 = -Infinity
++  var y1 = Infinity
++  var y2 = -Infinity
++
++  for (var i = 0; i < rings.length; i++) {
++    var ring = rings[i]
++
++    for (var j = 0; j < ring.length; j++) {
++      var coord = ring[j]
++
++      x1 = Math.min(x1, coord.x)
++      x2 = Math.max(x2, coord.x)
++      y1 = Math.min(y1, coord.y)
++      y2 = Math.max(y2, coord.y)
+     }
+-    return false
+   }
+-})
+ 
+-//Default comparison function
+-function defaultCompare(a, b) {
+-  if(a < b) {
+-    return -1
++  return [x1, y1, x2, y2]
++}
++
++FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON
++
++},{"point-geometry":400,"vector-tile":456}],464:[function(require,module,exports){
++'use strict';
++
++// tile ========================================
++
++var tile = exports.tile = {read: readTile, write: writeTile};
++
++tile.GeomType = {
++    "Unknown": 0,
++    "Point": 1,
++    "LineString": 2,
++    "Polygon": 3
++};
++
++function readTile(pbf, end) {
++    return pbf.readFields(readTileField, {"layers": []}, end);
++}
++
++function readTileField(tag, tile, pbf) {
++    if (tag === 3) tile.layers.push(readLayer(pbf, pbf.readVarint() + pbf.pos));
++}
++
++function writeTile(tile, pbf) {
++    var i;
++    if (tile.layers !== undefined) for (i = 0; i < tile.layers.length; i++) pbf.writeMessage(3, writeLayer, tile.layers[i]);
++}
++
++// value ========================================
++
++tile.value = {read: readValue, write: writeValue};
++
++function readValue(pbf, end) {
++    return pbf.readFields(readValueField, {}, end);
++}
++
++function readValueField(tag, value, pbf) {
++    if (tag === 1) value.string_value = pbf.readString();
++    else if (tag === 2) value.float_value = pbf.readFloat();
++    else if (tag === 3) value.double_value = pbf.readDouble();
++    else if (tag === 4) value.int_value = pbf.readVarint();
++    else if (tag === 5) value.uint_value = pbf.readVarint();
++    else if (tag === 6) value.sint_value = pbf.readSVarint();
++    else if (tag === 7) value.bool_value = pbf.readBoolean();
++}
++
++function writeValue(value, pbf) {
++    if (value.string_value !== undefined) pbf.writeStringField(1, value.string_value);
++    if (value.float_value !== undefined) pbf.writeFloatField(2, value.float_value);
++    if (value.double_value !== undefined) pbf.writeDoubleField(3, value.double_value);
++    if (value.int_value !== undefined) pbf.writeVarintField(4, value.int_value);
++    if (value.uint_value !== undefined) pbf.writeVarintField(5, value.uint_value);
++    if (value.sint_value !== undefined) pbf.writeSVarintField(6, value.sint_value);
++    if (value.bool_value !== undefined) pbf.writeBooleanField(7, value.bool_value);
++}
++
++// feature ========================================
++
++tile.feature = {read: readFeature, write: writeFeature};
++
++function readFeature(pbf, end) {
++    var feature = pbf.readFields(readFeatureField, {}, end);
++    if (feature.type === undefined) feature.type = "Unknown";
++    return feature;
++}
++
++function readFeatureField(tag, feature, pbf) {
++    if (tag === 1) feature.id = pbf.readVarint();
++    else if (tag === 2) feature.tags = pbf.readPackedVarint();
++    else if (tag === 3) feature.type = pbf.readVarint();
++    else if (tag === 4) feature.geometry = pbf.readPackedVarint();
++}
++
++function writeFeature(feature, pbf) {
++    if (feature.id !== undefined) pbf.writeVarintField(1, feature.id);
++    if (feature.tags !== undefined) pbf.writePackedVarint(2, feature.tags);
++    if (feature.type !== undefined) pbf.writeVarintField(3, feature.type);
++    if (feature.geometry !== undefined) pbf.writePackedVarint(4, feature.geometry);
++}
++
++// layer ========================================
++
++tile.layer = {read: readLayer, write: writeLayer};
++
++function readLayer(pbf, end) {
++    return pbf.readFields(readLayerField, {"features": [], "keys": [], "values": []}, end);
++}
++
++function readLayerField(tag, layer, pbf) {
++    if (tag === 15) layer.version = pbf.readVarint();
++    else if (tag === 1) layer.name = pbf.readString();
++    else if (tag === 2) layer.features.push(readFeature(pbf, pbf.readVarint() + pbf.pos));
++    else if (tag === 3) layer.keys.push(pbf.readString());
++    else if (tag === 4) layer.values.push(readValue(pbf, pbf.readVarint() + pbf.pos));
++    else if (tag === 5) layer.extent = pbf.readVarint();
++}
++
++function writeLayer(layer, pbf) {
++    if (layer.version !== undefined) pbf.writeVarintField(15, layer.version);
++    if (layer.name !== undefined) pbf.writeStringField(1, layer.name);
++    var i;
++    if (layer.features !== undefined) for (i = 0; i < layer.features.length; i++) pbf.writeMessage(2, writeFeature, layer.features[i]);
++    if (layer.keys !== undefined) for (i = 0; i < layer.keys.length; i++) pbf.writeStringField(3, layer.keys[i]);
++    if (layer.values !== undefined) for (i = 0; i < layer.values.length; i++) pbf.writeMessage(4, writeValue, layer.values[i]);
++    if (layer.extent !== undefined) pbf.writeVarintField(5, layer.extent);
++}
++
++},{}],465:[function(require,module,exports){
++// Copyright (C) 2011 Google Inc.
++//
++// Licensed under the Apache License, Version 2.0 (the "License");
++// you may not use this file except in compliance with the License.
++// You may obtain a copy of the License at
++//
++// http://www.apache.org/licenses/LICENSE-2.0
++//
++// Unless required by applicable law or agreed to in writing, software
++// distributed under the License is distributed on an "AS IS" BASIS,
++// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
++// See the License for the specific language governing permissions and
++// limitations under the License.
++
++/**
++ * @fileoverview Install a leaky WeakMap emulation on platforms that
++ * don't provide a built-in one.
++ *
++ * <p>Assumes that an ES5 platform where, if {@code WeakMap} is
++ * already present, then it conforms to the anticipated ES6
++ * specification. To run this file on an ES5 or almost ES5
++ * implementation where the {@code WeakMap} specification does not
++ * quite conform, run <code>repairES5.js</code> first.
++ *
++ * <p>Even though WeakMapModule is not global, the linter thinks it
++ * is, which is why it is in the overrides list below.
++ *
++ * <p>NOTE: Before using this WeakMap emulation in a non-SES
++ * environment, see the note below about hiddenRecord.
++ *
++ * @author Mark S. Miller
++ * @requires crypto, ArrayBuffer, Uint8Array, navigator, console
++ * @overrides WeakMap, ses, Proxy
++ * @overrides WeakMapModule
++ */
++
++/**
++ * This {@code WeakMap} emulation is observably equivalent to the
++ * ES-Harmony WeakMap, but with leakier garbage collection properties.
++ *
++ * <p>As with true WeakMaps, in this emulation, a key does not
++ * retain maps indexed by that key and (crucially) a map does not
++ * retain the keys it indexes. A map by itself also does not retain
++ * the values associated with that map.
++ *
++ * <p>However, the values associated with a key in some map are
++ * retained so long as that key is retained and those associations are
++ * not overridden. For example, when used to support membranes, all
++ * values exported from a given membrane will live for the lifetime
++ * they would have had in the absence of an interposed membrane. Even
++ * when the membrane is revoked, all objects that would have been
++ * reachable in the absence of revocation will still be reachable, as
++ * far as the GC can tell, even though they will no longer be relevant
++ * to ongoing computation.
++ *
++ * <p>The API implemented here is approximately the API as implemented
++ * in FF6.0a1 and agreed to by MarkM, Andreas Gal, and Dave Herman,
++ * rather than the offially approved proposal page. TODO(erights):
++ * upgrade the ecmascript WeakMap proposal page to explain this API
++ * change and present to EcmaScript committee for their approval.
++ *
++ * <p>The first difference between the emulation here and that in
++ * FF6.0a1 is the presence of non enumerable {@code get___, has___,
++ * set___, and delete___} methods on WeakMap instances to represent
++ * what would be the hidden internal properties of a primitive
++ * implementation. Whereas the FF6.0a1 WeakMap.prototype methods
++ * require their {@code this} to be a genuine WeakMap instance (i.e.,
++ * an object of {@code [[Class]]} "WeakMap}), since there is nothing
++ * unforgeable about the pseudo-internal method names used here,
++ * nothing prevents these emulated prototype methods from being
++ * applied to non-WeakMaps with pseudo-internal methods of the same
++ * names.
++ *
++ * <p>Another difference is that our emulated {@code
++ * WeakMap.prototype} is not itself a WeakMap. A problem with the
++ * current FF6.0a1 API is that WeakMap.prototype is itself a WeakMap
++ * providing ambient mutability and an ambient communications
++ * channel. Thus, if a WeakMap is already present and has this
++ * problem, repairES5.js wraps it in a safe wrappper in order to
++ * prevent access to this channel. (See
++ * PATCH_MUTABLE_FROZEN_WEAKMAP_PROTO in repairES5.js).
++ */
++
++/**
++ * If this is a full <a href=
++ * "http://code.google.com/p/es-lab/wiki/SecureableES5"
++ * >secureable ES5</a> platform and the ES-Harmony {@code WeakMap} is
++ * absent, install an approximate emulation.
++ *
++ * <p>If WeakMap is present but cannot store some objects, use our approximate
++ * emulation as a wrapper.
++ *
++ * <p>If this is almost a secureable ES5 platform, then WeakMap.js
++ * should be run after repairES5.js.
++ *
++ * <p>See {@code WeakMap} for documentation of the garbage collection
++ * properties of this WeakMap emulation.
++ */
++(function WeakMapModule() {
++  "use strict";
++
++  if (typeof ses !== 'undefined' && ses.ok && !ses.ok()) {
++    // already too broken, so give up
++    return;
++  }
++
++  /**
++   * In some cases (current Firefox), we must make a choice betweeen a
++   * WeakMap which is capable of using all varieties of host objects as
++   * keys and one which is capable of safely using proxies as keys. See
++   * comments below about HostWeakMap and DoubleWeakMap for details.
++   *
++   * This function (which is a global, not exposed to guests) marks a
++   * WeakMap as permitted to do what is necessary to index all host
++   * objects, at the cost of making it unsafe for proxies.
++   *
++   * Do not apply this function to anything which is not a genuine
++   * fresh WeakMap.
++   */
++  function weakMapPermitHostObjects(map) {
++    // identity of function used as a secret -- good enough and cheap
++    if (map.permitHostObjects___) {
++      map.permitHostObjects___(weakMapPermitHostObjects);
++    }
+   }
+-  if(a > b) {
+-    return 1
++  if (typeof ses !== 'undefined') {
++    ses.weakMapPermitHostObjects = weakMapPermitHostObjects;
+   }
+-  return 0
+-}
+-
+-//Build a tree
+-function createRBTree(compare) {
+-  return new RedBlackTree(compare || defaultCompare, null)
+-}
+-},{}],472:[function(require,module,exports){
+-"use strict"
+-
+-module.exports = createSlabDecomposition
+-
+-var bounds = require("binary-search-bounds")
+-var createRBTree = require("functional-red-black-tree")
+-var orient = require("robust-orientation")
+-var orderSegments = require("./lib/order-segments")
+ 
+-function SlabDecomposition(slabs, coordinates, horizontal) {
+-  this.slabs = slabs
+-  this.coordinates = coordinates
+-  this.horizontal = horizontal
+-}
++  // IE 11 has no Proxy but has a broken WeakMap such that we need to patch
++  // it using DoubleWeakMap; this flag tells DoubleWeakMap so.
++  var doubleWeakMapCheckSilentFailure = false;
+ 
+-var proto = SlabDecomposition.prototype
++  // Check if there is already a good-enough WeakMap implementation, and if so
++  // exit without replacing it.
++  if (typeof WeakMap === 'function') {
++    var HostWeakMap = WeakMap;
++    // There is a WeakMap -- is it good enough?
++    if (typeof navigator !== 'undefined' &&
++        /Firefox/.test(navigator.userAgent)) {
++      // We're now *assuming not*, because as of this writing (2013-05-06)
++      // Firefox's WeakMaps have a miscellany of objects they won't accept, and
++      // we don't want to make an exhaustive list, and testing for just one
++      // will be a problem if that one is fixed alone (as they did for Event).
+ 
+-function compareHorizontal(e, y) {
+-  return e.y - y
+-}
++      // If there is a platform that we *can* reliably test on, here's how to
++      // do it:
++      //  var problematic = ... ;
++      //  var testHostMap = new HostWeakMap();
++      //  try {
++      //    testHostMap.set(problematic, 1);  // Firefox 20 will throw here
++      //    if (testHostMap.get(problematic) === 1) {
++      //      return;
++      //    }
++      //  } catch (e) {}
+ 
+-function searchBucket(root, p) {
+-  var lastNode = null
+-  while(root) {
+-    var seg = root.key
+-    var l, r
+-    if(seg[0][0] < seg[1][0]) {
+-      l = seg[0]
+-      r = seg[1]
+-    } else {
+-      l = seg[1]
+-      r = seg[0]
+-    }
+-    var o = orient(l, r, p)
+-    if(o < 0) {
+-      root = root.left
+-    } else if(o > 0) {
+-      if(p[0] !== seg[1][0]) {
+-        lastNode = root
+-        root = root.right
+-      } else {
+-        var val = searchBucket(root.right, p)
+-        if(val) {
+-          return val
+-        }
+-        root = root.left
+-      }
+     } else {
+-      if(p[0] !== seg[1][0]) {
+-        return root
++      // IE 11 bug: WeakMaps silently fail to store frozen objects.
++      var testMap = new HostWeakMap();
++      var testObject = Object.freeze({});
++      testMap.set(testObject, 1);
++      if (testMap.get(testObject) !== 1) {
++        doubleWeakMapCheckSilentFailure = true;
++        // Fall through to installing our WeakMap.
+       } else {
+-        var val = searchBucket(root.right, p)
+-        if(val) {
+-          return val
+-        }
+-        root = root.left
+-      }
+-    }
+-  }
+-  return lastNode
+-}
+-
+-proto.castUp = function(p) {
+-  var bucket = bounds.le(this.coordinates, p[0])
+-  if(bucket < 0) {
+-    return -1
+-  }
+-  var root = this.slabs[bucket]
+-  var hitNode = searchBucket(this.slabs[bucket], p)
+-  var lastHit = -1
+-  if(hitNode) {
+-    lastHit = hitNode.value
+-  }
+-  //Edge case: need to handle horizontal segments (sucks)
+-  if(this.coordinates[bucket] === p[0]) {
+-    var lastSegment = null
+-    if(hitNode) {
+-      lastSegment = hitNode.key
+-    }
+-    if(bucket > 0) {
+-      var otherHitNode = searchBucket(this.slabs[bucket-1], p)
+-      if(otherHitNode) {
+-        if(lastSegment) {
+-          if(orderSegments(otherHitNode.key, lastSegment) > 0) {
+-            lastSegment = otherHitNode.key
+-            lastHit = otherHitNode.value
+-          }
+-        } else {
+-          lastHit = otherHitNode.value
+-          lastSegment = otherHitNode.key
+-        }
+-      }
+-    }
+-    var horiz = this.horizontal[bucket]
+-    if(horiz.length > 0) {
+-      var hbucket = bounds.ge(horiz, p[1], compareHorizontal)
+-      if(hbucket < horiz.length) {
+-        var e = horiz[hbucket]
+-        if(p[1] === e.y) {
+-          if(e.closed) {
+-            return e.index
+-          } else {
+-            while(hbucket < horiz.length-1 && horiz[hbucket+1].y === p[1]) {
+-              hbucket = hbucket+1
+-              e = horiz[hbucket]
+-              if(e.closed) {
+-                return e.index
+-              }
+-            }
+-            if(e.y === p[1] && !e.start) {
+-              hbucket = hbucket+1
+-              if(hbucket >= horiz.length) {
+-                return lastHit
+-              }
+-              e = horiz[hbucket]
+-            }
+-          }
+-        }
+-        //Check if e is above/below last segment
+-        if(e.start) {
+-          if(lastSegment) {
+-            var o = orient(lastSegment[0], lastSegment[1], [p[0], e.y])
+-            if(lastSegment[0][0] > lastSegment[1][0]) {
+-              o = -o
+-            }
+-            if(o > 0) {
+-              lastHit = e.index
+-            }
+-          } else {
+-            lastHit = e.index
+-          }
+-        } else if(e.y !== p[1]) {
+-          lastHit = e.index
+-        }
++        module.exports = WeakMap;
++        return;
+       }
+     }
+   }
+-  return lastHit
+-}
+ 
+-function IntervalSegment(y, index, start, closed) {
+-  this.y = y
+-  this.index = index
+-  this.start = start
+-  this.closed = closed
+-}
++  var hop = Object.prototype.hasOwnProperty;
++  var gopn = Object.getOwnPropertyNames;
++  var defProp = Object.defineProperty;
++  var isExtensible = Object.isExtensible;
+ 
+-function Event(x, segment, create, index) {
+-  this.x = x
+-  this.segment = segment
+-  this.create = create
+-  this.index = index
+-}
++  /**
++   * Security depends on HIDDEN_NAME being both <i>unguessable</i> and
++   * <i>undiscoverable</i> by untrusted code.
++   *
++   * <p>Given the known weaknesses of Math.random() on existing
++   * browsers, it does not generate unguessability we can be confident
++   * of.
++   *
++   * <p>It is the monkey patching logic in this file that is intended
++   * to ensure undiscoverability. The basic idea is that there are
++   * three fundamental means of discovering properties of an object:
++   * The for/in loop, Object.keys(), and Object.getOwnPropertyNames(),
++   * as well as some proposed ES6 extensions that appear on our
++   * whitelist. The first two only discover enumerable properties, and
++   * we only use HIDDEN_NAME to name a non-enumerable property, so the
++   * only remaining threat should be getOwnPropertyNames and some
++   * proposed ES6 extensions that appear on our whitelist. We monkey
++   * patch them to remove HIDDEN_NAME from the list of properties they
++   * returns.
++   *
++   * <p>TODO(erights): On a platform with built-in Proxies, proxies
++   * could be used to trap and thereby discover the HIDDEN_NAME, so we
++   * need to monkey patch Proxy.create, Proxy.createFunction, etc, in
++   * order to wrap the provided handler with the real handler which
++   * filters out all traps using HIDDEN_NAME.
++   *
++   * <p>TODO(erights): Revisit Mike Stay's suggestion that we use an
++   * encapsulated function at a not-necessarily-secret name, which
++   * uses the Stiegler shared-state rights amplification pattern to
++   * reveal the associated value only to the WeakMap in which this key
++   * is associated with that value. Since only the key retains the
++   * function, the function can also remember the key without causing
++   * leakage of the key, so this doesn't violate our general gc
++   * goals. In addition, because the name need not be a guarded
++   * secret, we could efficiently handle cross-frame frozen keys.
++   */
++  var HIDDEN_NAME_PREFIX = 'weakmap:';
++  var HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'ident:' + Math.random() + '___';
+ 
++  if (typeof crypto !== 'undefined' &&
++      typeof crypto.getRandomValues === 'function' &&
++      typeof ArrayBuffer === 'function' &&
++      typeof Uint8Array === 'function') {
++    var ab = new ArrayBuffer(25);
++    var u8s = new Uint8Array(ab);
++    crypto.getRandomValues(u8s);
++    HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'rand:' +
++      Array.prototype.map.call(u8s, function(u8) {
++        return (u8 % 36).toString(36);
++      }).join('') + '___';
++  }
+ 
+-function createSlabDecomposition(segments) {
+-  var numSegments = segments.length
+-  var numEvents = 2 * numSegments
+-  var events = new Array(numEvents)
+-  for(var i=0; i<numSegments; ++i) {
+-    var s = segments[i]
+-    var f = s[0][0] < s[1][0]
+-    events[2*i] = new Event(s[0][0], s, f, i)
+-    events[2*i+1] = new Event(s[1][0], s, !f, i)
++  function isNotHiddenName(name) {
++    return !(
++        name.substr(0, HIDDEN_NAME_PREFIX.length) == HIDDEN_NAME_PREFIX &&
++        name.substr(name.length - 3) === '___');
+   }
+-  events.sort(function(a,b) {
+-    var d = a.x - b.x
+-    if(d) {
+-      return d
+-    }
+-    d = a.create - b.create
+-    if(d) {
+-      return d
++
++  /**
++   * Monkey patch getOwnPropertyNames to avoid revealing the
++   * HIDDEN_NAME.
++   *
++   * <p>The ES5.1 spec requires each name to appear only once, but as
++   * of this writing, this requirement is controversial for ES6, so we
++   * made this code robust against this case. If the resulting extra
++   * search turns out to be expensive, we can probably relax this once
++   * ES6 is adequately supported on all major browsers, iff no browser
++   * versions we support at that time have relaxed this constraint
++   * without providing built-in ES6 WeakMaps.
++   */
++  defProp(Object, 'getOwnPropertyNames', {
++    value: function fakeGetOwnPropertyNames(obj) {
++      return gopn(obj).filter(isNotHiddenName);
+     }
+-    return Math.min(a.segment[0][1], a.segment[1][1]) - Math.min(b.segment[0][1], b.segment[1][1])
+-  })
+-  var tree = createRBTree(orderSegments)
+-  var slabs = []
+-  var lines = []
+-  var horizontal = []
+-  var lastX = -Infinity
+-  for(var i=0; i<numEvents; ) {
+-    var x = events[i].x
+-    var horiz = []
+-    while(i < numEvents) {
+-      var e = events[i]
+-      if(e.x !== x) {
+-        break
+-      }
+-      i += 1
+-      if(e.segment[0][0] === e.x && e.segment[1][0] === e.x) {
+-        if(e.create) {
+-          if(e.segment[0][1] < e.segment[1][1]) {
+-            horiz.push(new IntervalSegment(
+-                e.segment[0][1],
+-                e.index,
+-                true,
+-                true))
+-            horiz.push(new IntervalSegment(
+-                e.segment[1][1],
+-                e.index,
+-                false,
+-                false))
+-          } else {
+-            horiz.push(new IntervalSegment(
+-                e.segment[1][1],
+-                e.index,
+-                true,
+-                false))
+-            horiz.push(new IntervalSegment(
+-                e.segment[0][1],
+-                e.index,
+-                false,
+-                true))
+-          }
+-        }
+-      } else {
+-        if(e.create) {
+-          tree = tree.insert(e.segment, e.index)
+-        } else {
+-          tree = tree.remove(e.segment)
+-        }
++  });
++
++  /**
++   * getPropertyNames is not in ES5 but it is proposed for ES6 and
++   * does appear in our whitelist, so we need to clean it too.
++   */
++  if ('getPropertyNames' in Object) {
++    var originalGetPropertyNames = Object.getPropertyNames;
++    defProp(Object, 'getPropertyNames', {
++      value: function fakeGetPropertyNames(obj) {
++        return originalGetPropertyNames(obj).filter(isNotHiddenName);
+       }
+-    }
+-    slabs.push(tree.root)
+-    lines.push(x)
+-    horizontal.push(horiz)
++    });
+   }
+-  return new SlabDecomposition(slabs, lines, horizontal)
+-}
+-},{"./lib/order-segments":470,"binary-search-bounds":468,"functional-red-black-tree":471,"robust-orientation":439}],473:[function(require,module,exports){
+-module.exports = preprocessPolygon
+ 
+-var orient = require('robust-orientation')[3]
+-var makeSlabs = require('slab-decomposition')
+-var makeIntervalTree = require('interval-tree-1d')
+-var bsearch = require('binary-search-bounds')
++  /**
++   * <p>To treat objects as identity-keys with reasonable efficiency
++   * on ES5 by itself (i.e., without any object-keyed collections), we
++   * need to add a hidden property to such key objects when we
++   * can. This raises several issues:
++   * <ul>
++   * <li>Arranging to add this property to objects before we lose the
++   *     chance, and
++   * <li>Hiding the existence of this new property from most
++   *     JavaScript code.
++   * <li>Preventing <i>certification theft</i>, where one object is
++   *     created falsely claiming to be the key of an association
++   *     actually keyed by another object.
++   * <li>Preventing <i>value theft</i>, where untrusted code with
++   *     access to a key object but not a weak map nevertheless
++   *     obtains access to the value associated with that key in that
++   *     weak map.
++   * </ul>
++   * We do so by
++   * <ul>
++   * <li>Making the name of the hidden property unguessable, so "[]"
++   *     indexing, which we cannot intercept, cannot be used to access
++   *     a property without knowing the name.
++   * <li>Making the hidden property non-enumerable, so we need not
++   *     worry about for-in loops or {@code Object.keys},
++   * <li>monkey patching those reflective methods that would
++   *     prevent extensions, to add this hidden property first,
++   * <li>monkey patching those methods that would reveal this
++   *     hidden property.
++   * </ul>
++   * Unfortunately, because of same-origin iframes, we cannot reliably
++   * add this hidden property before an object becomes
++   * non-extensible. Instead, if we encounter a non-extensible object
++   * without a hidden record that we can detect (whether or not it has
++   * a hidden record stored under a name secret to us), then we just
++   * use the key object itself to represent its identity in a brute
++   * force leaky map stored in the weak map, losing all the advantages
++   * of weakness for these.
++   */
++  function getHiddenRecord(key) {
++    if (key !== Object(key)) {
++      throw new TypeError('Not an object: ' + key);
++    }
++    var hiddenRecord = key[HIDDEN_NAME];
++    if (hiddenRecord && hiddenRecord.key === key) { return hiddenRecord; }
++    if (!isExtensible(key)) {
++      // Weak map must brute force, as explained in doc-comment above.
++      return void 0;
++    }
+ 
+-function visitInterval() {
+-  return true
+-}
++    // The hiddenRecord and the key point directly at each other, via
++    // the "key" and HIDDEN_NAME properties respectively. The key
++    // field is for quickly verifying that this hidden record is an
++    // own property, not a hidden record from up the prototype chain.
++    //
++    // NOTE: Because this WeakMap emulation is meant only for systems like
++    // SES where Object.prototype is frozen without any numeric
++    // properties, it is ok to use an object literal for the hiddenRecord.
++    // This has two advantages:
++    // * It is much faster in a performance critical place
++    // * It avoids relying on Object.create(null), which had been
++    //   problematic on Chrome 28.0.1480.0. See
++    //   https://code.google.com/p/google-caja/issues/detail?id=1687
++    hiddenRecord = { key: key };
+ 
+-function intervalSearch(table) {
+-  return function(x, y) {
+-    var tree = table[x]
+-    if(tree) {
+-      return !!tree.queryPoint(y, visitInterval)
+-    }
+-    return false
+-  }
+-}
++    // When using this WeakMap emulation on platforms where
++    // Object.prototype might not be frozen and Object.create(null) is
++    // reliable, use the following two commented out lines instead.
++    // hiddenRecord = Object.create(null);
++    // hiddenRecord.key = key;
+ 
+-function buildVerticalIndex(segments) {
+-  var table = {}
+-  for(var i=0; i<segments.length; ++i) {
+-    var s = segments[i]
+-    var x = s[0][0]
+-    var y0 = s[0][1]
+-    var y1 = s[1][1]
+-    var p = [ Math.min(y0, y1), Math.max(y0, y1) ]
+-    if(x in table) {
+-      table[x].push(p)
+-    } else {
+-      table[x] = [ p ]
+-    }
+-  }
+-  var intervalTable = {}
+-  var keys = Object.keys(table)
+-  for(var i=0; i<keys.length; ++i) {
+-    var segs = table[keys[i]]
+-    intervalTable[keys[i]] = makeIntervalTree(segs)
+-  }
+-  return intervalSearch(intervalTable)
+-}
++    // Please contact us if you need this to work on platforms where
++    // Object.prototype might not be frozen and
++    // Object.create(null) might not be reliable.
+ 
+-function buildSlabSearch(slabs, coordinates) {
+-  return function(p) {
+-    var bucket = bsearch.le(coordinates, p[0])
+-    if(bucket < 0) {
+-      return 1
+-    }
+-    var root = slabs[bucket]
+-    if(!root) {
+-      if(bucket > 0 && coordinates[bucket] === p[0]) {
+-        root = slabs[bucket-1]
+-      } else {
+-        return 1
+-      }
+-    }
+-    var lastOrientation = 1
+-    while(root) {
+-      var s = root.key
+-      var o = orient(p, s[0], s[1])
+-      if(s[0][0] < s[1][0]) {
+-        if(o < 0) {
+-          root = root.left
+-        } else if(o > 0) {
+-          lastOrientation = -1
+-          root = root.right
+-        } else {
+-          return 0
+-        }
+-      } else {
+-        if(o > 0) {
+-          root = root.left
+-        } else if(o < 0) {
+-          lastOrientation = 1
+-          root = root.right
+-        } else {
+-          return 0
+-        }
+-      }
++    try {
++      defProp(key, HIDDEN_NAME, {
++        value: hiddenRecord,
++        writable: false,
++        enumerable: false,
++        configurable: false
++      });
++      return hiddenRecord;
++    } catch (error) {
++      // Under some circumstances, isExtensible seems to misreport whether
++      // the HIDDEN_NAME can be defined.
++      // The circumstances have not been isolated, but at least affect
++      // Node.js v0.10.26 on TravisCI / Linux, but not the same version of
++      // Node.js on OS X.
++      return void 0;
+     }
+-    return lastOrientation
+   }
+-}
+ 
+-function classifyEmpty(p) {
+-  return 1
+-}
++  /**
++   * Monkey patch operations that would make their argument
++   * non-extensible.
++   *
++   * <p>The monkey patched versions throw a TypeError if their
++   * argument is not an object, so it should only be done to functions
++   * that should throw a TypeError anyway if their argument is not an
++   * object.
++   */
++  (function(){
++    var oldFreeze = Object.freeze;
++    defProp(Object, 'freeze', {
++      value: function identifyingFreeze(obj) {
++        getHiddenRecord(obj);
++        return oldFreeze(obj);
++      }
++    });
++    var oldSeal = Object.seal;
++    defProp(Object, 'seal', {
++      value: function identifyingSeal(obj) {
++        getHiddenRecord(obj);
++        return oldSeal(obj);
++      }
++    });
++    var oldPreventExtensions = Object.preventExtensions;
++    defProp(Object, 'preventExtensions', {
++      value: function identifyingPreventExtensions(obj) {
++        getHiddenRecord(obj);
++        return oldPreventExtensions(obj);
++      }
++    });
++  })();
+ 
+-function createClassifyVertical(testVertical) {
+-  return function classify(p) {
+-    if(testVertical(p[0], p[1])) {
+-      return 0
+-    }
+-    return 1
++  function constFunc(func) {
++    func.prototype = null;
++    return Object.freeze(func);
+   }
+-}
+ 
+-function createClassifyPointDegen(testVertical, testNormal) {
+-  return function classify(p) {
+-    if(testVertical(p[0], p[1])) {
+-      return 0
++  var calledAsFunctionWarningDone = false;
++  function calledAsFunctionWarning() {
++    // Future ES6 WeakMap is currently (2013-09-10) expected to reject WeakMap()
++    // but we used to permit it and do it ourselves, so warn only.
++    if (!calledAsFunctionWarningDone && typeof console !== 'undefined') {
++      calledAsFunctionWarningDone = true;
++      console.warn('WeakMap should be invoked as new WeakMap(), not ' +
++          'WeakMap(). This will be an error in the future.');
+     }
+-    return testNormal(p)
+   }
+-}
+ 
+-function preprocessPolygon(loops) {
+-  //Compute number of loops
+-  var numLoops = loops.length
++  var nextId = 0;
+ 
+-  //Unpack segments
+-  var segments = []
+-  var vsegments = []
+-  var ptr = 0
+-  for(var i=0; i<numLoops; ++i) {
+-    var loop = loops[i]
+-    var numVertices = loop.length
+-    for(var s=numVertices-1,t=0; t<numVertices; s=(t++)) {
+-      var a = loop[s]
+-      var b = loop[t]
+-      if(a[0] === b[0]) {
+-        vsegments.push([a,b])
++  var OurWeakMap = function() {
++    if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
++      calledAsFunctionWarning();
++    }
++
++    // We are currently (12/25/2012) never encountering any prematurely
++    // non-extensible keys.
++    var keys = []; // brute force for prematurely non-extensible keys.
++    var values = []; // brute force for corresponding values.
++    var id = nextId++;
++
++    function get___(key, opt_default) {
++      var index;
++      var hiddenRecord = getHiddenRecord(key);
++      if (hiddenRecord) {
++        return id in hiddenRecord ? hiddenRecord[id] : opt_default;
+       } else {
+-        segments.push([a,b])
++        index = keys.indexOf(key);
++        return index >= 0 ? values[index] : opt_default;
+       }
+     }
+-  }
+ 
+-  //Degenerate case: All loops are empty
+-  if(segments.length === 0) {
+-    if(vsegments.length === 0) {
+-      return classifyEmpty
+-    } else {
+-      return createClassifyVertical(buildVerticalIndex(vsegments))
++    function has___(key) {
++      var hiddenRecord = getHiddenRecord(key);
++      if (hiddenRecord) {
++        return id in hiddenRecord;
++      } else {
++        return keys.indexOf(key) >= 0;
++      }
+     }
+-  }
+-
+-  //Build slab decomposition
+-  var slabs = makeSlabs(segments)
+-  var testSlab = buildSlabSearch(slabs.slabs, slabs.coordinates)
+ 
+-  if(vsegments.length === 0) {
+-    return testSlab
+-  } else {
+-    return createClassifyPointDegen(
+-      buildVerticalIndex(vsegments),
+-      testSlab)
+-  }
+-}
+-},{"binary-search-bounds":468,"interval-tree-1d":469,"robust-orientation":439,"slab-decomposition":472}],474:[function(require,module,exports){
+-'use strict'
++    function set___(key, value) {
++      var index;
++      var hiddenRecord = getHiddenRecord(key);
++      if (hiddenRecord) {
++        hiddenRecord[id] = value;
++      } else {
++        index = keys.indexOf(key);
++        if (index >= 0) {
++          values[index] = value;
++        } else {
++          // Since some browsers preemptively terminate slow turns but
++          // then continue computing with presumably corrupted heap
++          // state, we here defensively get keys.length first and then
++          // use it to update both the values and keys arrays, keeping
++          // them in sync.
++          index = keys.length;
++          values[index] = value;
++          // If we crash here, values will be one longer than keys.
++          keys[index] = key;
++        }
++      }
++      return this;
++    }
+ 
+-module.exports = planarGraphToPolyline
++    function delete___(key) {
++      var hiddenRecord = getHiddenRecord(key);
++      var index, lastIndex;
++      if (hiddenRecord) {
++        return id in hiddenRecord && delete hiddenRecord[id];
++      } else {
++        index = keys.indexOf(key);
++        if (index < 0) {
++          return false;
++        }
++        // Since some browsers preemptively terminate slow turns but
++        // then continue computing with potentially corrupted heap
++        // state, we here defensively get keys.length first and then use
++        // it to update both the keys and the values array, keeping
++        // them in sync. We update the two with an order of assignments,
++        // such that any prefix of these assignments will preserve the
++        // key/value correspondence, either before or after the delete.
++        // Note that this needs to work correctly when index === lastIndex.
++        lastIndex = keys.length - 1;
++        keys[index] = void 0;
++        // If we crash here, there's a void 0 in the keys array, but
++        // no operation will cause a "keys.indexOf(void 0)", since
++        // getHiddenRecord(void 0) will always throw an error first.
++        values[index] = values[lastIndex];
++        // If we crash here, values[index] cannot be found here,
++        // because keys[index] is void 0.
++        keys[index] = keys[lastIndex];
++        // If index === lastIndex and we crash here, then keys[index]
++        // is still void 0, since the aliasing killed the previous key.
++        keys.length = lastIndex;
++        // If we crash here, keys will be one shorter than values.
++        values.length = lastIndex;
++        return true;
++      }
++    }
+ 
+-var e2a = require('edges-to-adjacency-list')
+-var planarDual = require('planar-dual')
+-var preprocessPolygon = require('point-in-big-polygon')
+-var twoProduct = require('two-product')
+-var robustSum = require('robust-sum')
+-var uniq = require('uniq')
+-var trimLeaves = require('./lib/trim-leaves')
++    return Object.create(OurWeakMap.prototype, {
++      get___:    { value: constFunc(get___) },
++      has___:    { value: constFunc(has___) },
++      set___:    { value: constFunc(set___) },
++      delete___: { value: constFunc(delete___) }
++    });
++  };
+ 
+-function makeArray(length, fill) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = fill
+-  }
+-  return result
+-}
++  OurWeakMap.prototype = Object.create(Object.prototype, {
++    get: {
++      /**
++       * Return the value most recently associated with key, or
++       * opt_default if none.
++       */
++      value: function get(key, opt_default) {
++        return this.get___(key, opt_default);
++      },
++      writable: true,
++      configurable: true
++    },
+ 
+-function makeArrayOfArrays(length) {
+-  var result = new Array(length)
+-  for(var i=0; i<length; ++i) {
+-    result[i] = []
+-  }
+-  return result
+-}
++    has: {
++      /**
++       * Is there a value associated with key in this WeakMap?
++       */
++      value: function has(key) {
++        return this.has___(key);
++      },
++      writable: true,
++      configurable: true
++    },
+ 
++    set: {
++      /**
++       * Associate value with key in this WeakMap, overwriting any
++       * previous association if present.
++       */
++      value: function set(key, value) {
++        return this.set___(key, value);
++      },
++      writable: true,
++      configurable: true
++    },
+ 
+-function planarGraphToPolyline(edges, positions) {
++    'delete': {
++      /**
++       * Remove any association for key in this WeakMap, returning
++       * whether there was one.
++       *
++       * <p>Note that the boolean return here does not work like the
++       * {@code delete} operator. The {@code delete} operator returns
++       * whether the deletion succeeds at bringing about a state in
++       * which the deleted property is absent. The {@code delete}
++       * operator therefore returns true if the property was already
++       * absent, whereas this {@code delete} method returns false if
++       * the association was already absent.
++       */
++      value: function remove(key) {
++        return this.delete___(key);
++      },
++      writable: true,
++      configurable: true
++    }
++  });
+ 
+-  //Trim leaves
+-  var result = trimLeaves(edges, positions)
+-  edges = result[0]
+-  positions = result[1]
++  if (typeof HostWeakMap === 'function') {
++    (function() {
++      // If we got here, then the platform has a WeakMap but we are concerned
++      // that it may refuse to store some key types. Therefore, make a map
++      // implementation which makes use of both as possible.
+ 
+-  var numVertices = positions.length
+-  var numEdges = edges.length
++      // In this mode we are always using double maps, so we are not proxy-safe.
++      // This combination does not occur in any known browser, but we had best
++      // be safe.
++      if (doubleWeakMapCheckSilentFailure && typeof Proxy !== 'undefined') {
++        Proxy = undefined;
++      }
+ 
+-  //Calculate adjacency list, check manifold
+-  var adj = e2a(edges, positions.length)
+-  for(var i=0; i<numVertices; ++i) {
+-    if(adj[i].length % 2 === 1) {
+-      throw new Error('planar-graph-to-polyline: graph must be manifold')
+-    }
+-  }
++      function DoubleWeakMap() {
++        if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
++          calledAsFunctionWarning();
++        }
+ 
+-  //Get faces
+-  var faces = planarDual(edges, positions)
++        // Preferable, truly weak map.
++        var hmap = new HostWeakMap();
+ 
+-  //Check orientation of a polygon using exact arithmetic
+-  function ccw(c) {
+-    var n = c.length
+-    var area = [0]
+-    for(var j=0; j<n; ++j) {
+-      var a = positions[c[j]]
+-      var b = positions[c[(j+1)%n]]
+-      var t00 = twoProduct(-a[0], a[1])
+-      var t01 = twoProduct(-a[0], b[1])
+-      var t10 = twoProduct( b[0], a[1])
+-      var t11 = twoProduct( b[0], b[1])
+-      area = robustSum(area, robustSum(robustSum(t00, t01), robustSum(t10, t11)))
+-    }
+-    return area[area.length-1] > 0
+-  }
++        // Our hidden-property-based pseudo-weak-map. Lazily initialized in the
++        // 'set' implementation; thus we can avoid performing extra lookups if
++        // we know all entries actually stored are entered in 'hmap'.
++        var omap = undefined;
+ 
+-  //Extract all clockwise faces
+-  faces = faces.filter(ccw)
++        // Hidden-property maps are not compatible with proxies because proxies
++        // can observe the hidden name and either accidentally expose it or fail
++        // to allow the hidden property to be set. Therefore, we do not allow
++        // arbitrary WeakMaps to switch to using hidden properties, but only
++        // those which need the ability, and unprivileged code is not allowed
++        // to set the flag.
++        //
++        // (Except in doubleWeakMapCheckSilentFailure mode in which case we
++        // disable proxies.)
++        var enableSwitching = false;
+ 
+-  //Detect which loops are contained in one another to handle parent-of relation
+-  var numFaces = faces.length
+-  var parent = new Array(numFaces)
+-  var containment = new Array(numFaces)
+-  for(var i=0; i<numFaces; ++i) {
+-    parent[i] = i
+-    var row = new Array(numFaces)
+-    var loopVertices = faces[i].map(function(v) {
+-      return positions[v]
+-    })
+-    var pmc = preprocessPolygon([loopVertices])
+-    var count = 0
+-    outer:
+-    for(var j=0; j<numFaces; ++j) {
+-      row[j] = 0
+-      if(i === j) {
+-        continue
+-      }
+-      var c = faces[j]
+-      var n = c.length
+-      for(var k=0; k<n; ++k) {
+-        var d = pmc(positions[c[k]])
+-        if(d !== 0) {
+-          if(d < 0) {
+-            row[j] = 1
+-            count += 1
++        function dget(key, opt_default) {
++          if (omap) {
++            return hmap.has(key) ? hmap.get(key)
++                : omap.get___(key, opt_default);
++          } else {
++            return hmap.get(key, opt_default);
+           }
+-          continue outer
+         }
+-      }
+-      row[j] = 1
+-      count += 1
+-    }
+-    containment[i] = [count, i, row]
+-  }
+-  containment.sort(function(a,b) {
+-    return b[0] - a[0]
+-  })
+-  for(var i=0; i<numFaces; ++i) {
+-    var row = containment[i]
+-    var idx = row[1]
+-    var children = row[2]
+-    for(var j=0; j<numFaces; ++j) {
+-      if(children[j]) {
+-        parent[j] = idx
+-      }
+-    }
+-  }
+-
+-  //Initialize face adjacency list
+-  var fadj = makeArrayOfArrays(numFaces)
+-  for(var i=0; i<numFaces; ++i) {
+-    fadj[i].push(parent[i])
+-    fadj[parent[i]].push(i)
+-  }
+-
+-  //Build adjacency matrix for edges
+-  var edgeAdjacency = {}
+-  var internalVertices = makeArray(numVertices, false)
+-  for(var i=0; i<numFaces; ++i) {
+-    var c = faces[i]
+-    var n = c.length
+-    for(var j=0; j<n; ++j) {
+-      var a = c[j]
+-      var b = c[(j+1)%n]
+-      var key = Math.min(a,b) + ":" + Math.max(a,b)
+-      if(key in edgeAdjacency) {
+-        var neighbor = edgeAdjacency[key]
+-        fadj[neighbor].push(i)
+-        fadj[i].push(neighbor)
+-        internalVertices[a] = internalVertices[b] = true
+-      } else {
+-        edgeAdjacency[key] = i
+-      }
+-    }
+-  }
+ 
+-  function sharedBoundary(c) {
+-    var n = c.length
+-    for(var i=0; i<n; ++i) {
+-      if(!internalVertices[c[i]]) {
+-        return false
+-      }
+-    }
+-    return true
+-  }
++        function dhas(key) {
++          return hmap.has(key) || (omap ? omap.has___(key) : false);
++        }
+ 
+-  var toVisit = []
+-  var parity = makeArray(numFaces, -1)
+-  for(var i=0; i<numFaces; ++i) {
+-    if(parent[i] === i && !sharedBoundary(faces[i])) {
+-      toVisit.push(i)
+-      parity[i] = 0
+-    } else {
+-      parity[i] = -1
+-    }
+-  }
++        var dset;
++        if (doubleWeakMapCheckSilentFailure) {
++          dset = function(key, value) {
++            hmap.set(key, value);
++            if (!hmap.has(key)) {
++              if (!omap) { omap = new OurWeakMap(); }
++              omap.set(key, value);
++            }
++            return this;
++          };
++        } else {
++          dset = function(key, value) {
++            if (enableSwitching) {
++              try {
++                hmap.set(key, value);
++              } catch (e) {
++                if (!omap) { omap = new OurWeakMap(); }
++                omap.set___(key, value);
++              }
++            } else {
++              hmap.set(key, value);
++            }
++            return this;
++          };
++        }
+ 
+-  //Using face adjacency, classify faces as in/out
+-  var result = []
+-  while(toVisit.length > 0) {
+-    var top = toVisit.pop()
+-    var nbhd = fadj[top]
+-    uniq(nbhd, function(a,b) {
+-      return a-b
+-    })
+-    var nnbhr = nbhd.length
+-    var p = parity[top]
+-    var polyline
+-    if(p === 0) {
+-      var c = faces[top]
+-      polyline = [c]
+-    }
+-    for(var i=0; i<nnbhr; ++i) {
+-      var f = nbhd[i]
+-      if(parity[f] >= 0) {
+-        continue
+-      }
+-      parity[f] = p^1
+-      toVisit.push(f)
+-      if(p === 0) {
+-        var c = faces[f]
+-        if(!sharedBoundary(c)) {
+-          c.reverse()
+-          polyline.push(c)
++        function ddelete(key) {
++          var result = !!hmap['delete'](key);
++          if (omap) { return omap.delete___(key) || result; }
++          return result;
+         }
++
++        return Object.create(OurWeakMap.prototype, {
++          get___:    { value: constFunc(dget) },
++          has___:    { value: constFunc(dhas) },
++          set___:    { value: constFunc(dset) },
++          delete___: { value: constFunc(ddelete) },
++          permitHostObjects___: { value: constFunc(function(token) {
++            if (token === weakMapPermitHostObjects) {
++              enableSwitching = true;
++            } else {
++              throw new Error('bogus call to permitHostObjects___');
++            }
++          })}
++        });
+       }
+-    }
+-    if(p === 0) {
+-      result.push(polyline)
+-    }
+-  }
++      DoubleWeakMap.prototype = OurWeakMap.prototype;
++      module.exports = DoubleWeakMap;
+ 
+-  return result
+-}
+-},{"./lib/trim-leaves":462,"edges-to-adjacency-list":463,"planar-dual":464,"point-in-big-polygon":473,"robust-sum":442,"two-product":456,"uniq":459}],475:[function(require,module,exports){
+-arguments[4][51][0].apply(exports,arguments)
+-},{"dup":51}],476:[function(require,module,exports){
+-"use strict"; "use restrict";
++      // define .constructor to hide OurWeakMap ctor
++      Object.defineProperty(WeakMap.prototype, 'constructor', {
++        value: WeakMap,
++        enumerable: false,  // as default .constructor is
++        configurable: true,
++        writable: true
++      });
++    })();
++  } else {
++    // There is no host WeakMap, so we must use the emulation.
+ 
+-module.exports = UnionFind;
++    // Emulated WeakMaps are incompatible with native proxies (because proxies
++    // can observe the hidden name), so we must disable Proxy usage (in
++    // ArrayLike and Domado, currently).
++    if (typeof Proxy !== 'undefined') {
++      Proxy = undefined;
++    }
+ 
+-function UnionFind(count) {
+-  this.roots = new Array(count);
+-  this.ranks = new Array(count);
+-  
+-  for(var i=0; i<count; ++i) {
+-    this.roots[i] = i;
+-    this.ranks[i] = 0;
++    module.exports = OurWeakMap;
+   }
+-}
++})();
+ 
+-UnionFind.prototype.length = function() {
+-  return this.roots.length;
+-}
++},{}],466:[function(require,module,exports){
++var hiddenStore = require('./hidden-store.js');
+ 
+-UnionFind.prototype.makeSet = function() {
+-  var n = this.roots.length;
+-  this.roots.push(n);
+-  this.ranks.push(0);
+-  return n;
+-}
++module.exports = createStore;
+ 
+-UnionFind.prototype.find = function(x) {
+-  var roots = this.roots;
+-  while(roots[x] !== x) {
+-    var y = roots[x];
+-    roots[x] = roots[y];
+-    x = y;
+-  }
+-  return x;
+-}
++function createStore() {
++    var key = {};
+ 
+-UnionFind.prototype.link = function(x, y) {
+-  var xr = this.find(x)
+-    , yr = this.find(y);
+-  if(xr === yr) {
+-    return;
+-  }
+-  var ranks = this.ranks
+-    , roots = this.roots
+-    , xd    = ranks[xr]
+-    , yd    = ranks[yr];
+-  if(xd < yd) {
+-    roots[xr] = yr;
+-  } else if(yd < xd) {
+-    roots[yr] = xr;
+-  } else {
+-    roots[yr] = xr;
+-    ++ranks[xr];
+-  }
+-}
++    return function (obj) {
++        if ((typeof obj !== 'object' || obj === null) &&
++            typeof obj !== 'function'
++        ) {
++            throw new Error('Weakmap-shim: Key must be object')
++        }
+ 
++        var store = obj.valueOf(key);
++        return store && store.identity === key ?
++            store : hiddenStore(obj, key);
++    };
++}
+ 
+-},{}],477:[function(require,module,exports){
+-arguments[4][244][0].apply(exports,arguments)
+-},{"bit-twiddle":475,"dup":244,"union-find":476}],478:[function(require,module,exports){
+-"use strict"
++},{"./hidden-store.js":467}],467:[function(require,module,exports){
++module.exports = hiddenStore;
+ 
+-module.exports = simplifyPolygon
++function hiddenStore(obj, key) {
++    var store = { identity: key };
++    var valueOf = obj.valueOf;
+ 
+-var orient = require("robust-orientation")
+-var sc = require("simplicial-complex")
++    Object.defineProperty(obj, "valueOf", {
++        value: function (value) {
++            return value !== key ?
++                valueOf.apply(this, arguments) : store;
++        },
++        writable: true
++    });
+ 
+-function errorWeight(base, a, b) {
+-  var area = Math.abs(orient(base, a, b))
+-  var perim = Math.sqrt(Math.pow(a[0] - b[0], 2) + Math.pow(a[1]-b[1], 2))
+-  return area / perim
++    return store;
+ }
+ 
+-function simplifyPolygon(cells, positions, minArea) {
++},{}],468:[function(require,module,exports){
++// Original - @Gozola. 
++// https://gist.github.com/Gozala/1269991
++// This is a reimplemented version (with a few bug fixes).
+ 
+-  var n = positions.length
+-  var nc = cells.length
+-  var inv = new Array(n)
+-  var outv = new Array(n)
+-  var weights = new Array(n)
+-  var dead = new Array(n)
+-  
+-  //Initialize tables
+-  for(var i=0; i<n; ++i) {
+-    inv[i] = outv[i] = -1
+-    weights[i] = Infinity
+-    dead[i] = false
+-  }
++var createStore = require('./create-store.js');
+ 
+-  //Compute neighbors
+-  for(var i=0; i<nc; ++i) {
+-    var c = cells[i]
+-    if(c.length !== 2) {
+-      throw new Error("Input must be a graph")
+-    }
+-    var s = c[1]
+-    var t = c[0]
+-    if(outv[t] !== -1) {
+-      outv[t] = -2
+-    } else {
+-      outv[t] = s
+-    }
+-    if(inv[s] !== -1) {
+-      inv[s] = -2
+-    } else {
+-      inv[s] = t
+-    }
+-  }
++module.exports = weakMap;
+ 
+-  //Updates the weight for vertex i
+-  function computeWeight(i) {
+-    if(dead[i]) {
+-      return Infinity
+-    }
+-    //TODO: Check that the line segment doesn't cross once simplified
+-    var s = inv[i]
+-    var t = outv[i]
+-    if((s<0) || (t<0)) {
+-      return Infinity
+-    } else {
+-      return errorWeight(positions[i], positions[s], positions[t])
++function weakMap() {
++    var privates = createStore();
++
++    return {
++        'get': function (key, fallback) {
++            var store = privates(key)
++            return store.hasOwnProperty('value') ?
++                store.value : fallback
++        },
++        'set': function (key, value) {
++            privates(key).value = value;
++        },
++        'has': function(key) {
++            return 'value' in privates(key);
++        },
++        'delete': function (key) {
++            return delete privates(key).value;
++        }
+     }
+-  }
++}
+ 
+-  //Swaps two nodes on the heap (i,j) are the index of the nodes
+-  function heapSwap(i,j) {
+-    var a = heap[i]
+-    var b = heap[j]
+-    heap[i] = b
+-    heap[j] = a
+-    index[a] = j
+-    index[b] = i
+-  }
++},{"./create-store.js":466}],469:[function(require,module,exports){
++var bundleFn = arguments[3];
++var sources = arguments[4];
++var cache = arguments[5];
+ 
+-  //Returns the weight of node i on the heap
+-  function heapWeight(i) {
+-    return weights[heap[i]]
+-  }
++var stringify = JSON.stringify;
+ 
+-  function heapParent(i) {
+-    if(i & 1) {
+-      return (i - 1) >> 1
+-    }
+-    return (i >> 1) - 1
+-  }
++module.exports = function (fn, options) {
++    var wkey;
++    var cacheKeys = Object.keys(cache);
+ 
+-  //Bubble element i down the heap
+-  function heapDown(i) {
+-    var w = heapWeight(i)
+-    while(true) {
+-      var tw = w
+-      var left  = 2*i + 1
+-      var right = 2*(i + 1)
+-      var next = i
+-      if(left < heapCount) {
+-        var lw = heapWeight(left)
+-        if(lw < tw) {
+-          next = left
+-          tw = lw
+-        }
+-      }
+-      if(right < heapCount) {
+-        var rw = heapWeight(right)
+-        if(rw < tw) {
+-          next = right
++    for (var i = 0, l = cacheKeys.length; i < l; i++) {
++        var key = cacheKeys[i];
++        var exp = cache[key].exports;
++        // Using babel as a transpiler to use esmodule, the export will always
++        // be an object with the default export as a property of it. To ensure
++        // the existing api and babel esmodule exports are both supported we
++        // check for both
++        if (exp === fn || exp && exp.default === fn) {
++            wkey = key;
++            break;
+         }
+-      }
+-      if(next === i) {
+-        return i
+-      }
+-      heapSwap(i, next)
+-      i = next      
+     }
+-  }
+ 
+-  //Bubbles element i up the heap
+-  function heapUp(i) {
+-    var w = heapWeight(i)
+-    while(i > 0) {
+-      var parent = heapParent(i)
+-      if(parent >= 0) {
+-        var pw = heapWeight(parent)
+-        if(w < pw) {
+-          heapSwap(i, parent)
+-          i = parent
+-          continue
++    if (!wkey) {
++        wkey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
++        var wcache = {};
++        for (var i = 0, l = cacheKeys.length; i < l; i++) {
++            var key = cacheKeys[i];
++            wcache[key] = key;
+         }
+-      }
+-      return i
++        sources[wkey] = [
++            Function(['require','module','exports'], '(' + fn + ')(self)'),
++            wcache
++        ];
+     }
+-  }
++    var skey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
+ 
+-  //Pop minimum element
+-  function heapPop() {
+-    if(heapCount > 0) {
+-      var head = heap[0]
+-      heapSwap(0, heapCount-1)
+-      heapCount -= 1
+-      heapDown(0)
+-      return head
+-    }
+-    return -1
+-  }
++    var scache = {}; scache[wkey] = wkey;
++    sources[skey] = [
++        Function(['require'], (
++            // try to call default if defined to also support babel esmodule
++            // exports
++            'var f = require(' + stringify(wkey) + ');' +
++            '(f.default ? f.default : f)(self);'
++        )),
++        scache
++    ];
+ 
+-  //Update heap item i
+-  function heapUpdate(i, w) {
+-    var a = heap[i]
+-    if(weights[a] === w) {
+-      return i
+-    }
+-    weights[a] = -Infinity
+-    heapUp(i)
+-    heapPop()
+-    weights[a] = w
+-    heapCount += 1
+-    return heapUp(heapCount-1)
+-  }
++    var workerSources = {};
++    resolveSources(skey);
+ 
+-  //Kills a vertex (assume vertex already removed from heap)
+-  function kill(i) {
+-    if(dead[i]) {
+-      return
+-    }
+-    //Kill vertex
+-    dead[i] = true
+-    //Fixup topology
+-    var s = inv[i]
+-    var t = outv[i]
+-    if(inv[t] >= 0) {
+-      inv[t] = s
+-    }
+-    if(outv[s] >= 0) {
+-      outv[s] = t
+-    }
++    function resolveSources(key) {
++        workerSources[key] = true;
+ 
+-    //Update weights on s and t
+-    if(index[s] >= 0) {
+-      heapUpdate(index[s], computeWeight(s))
+-    }
+-    if(index[t] >= 0) {
+-      heapUpdate(index[t], computeWeight(t))
++        for (var depPath in sources[key][1]) {
++            var depKey = sources[key][1][depPath];
++            if (!workerSources[depKey]) {
++                resolveSources(depKey);
++            }
++        }
+     }
+-  }
+ 
+-  //Initialize weights and heap
+-  var heap = []
+-  var index = new Array(n)
+-  for(var i=0; i<n; ++i) {
+-    var w = weights[i] = computeWeight(i)
+-    if(w < Infinity) {
+-      index[i] = heap.length
+-      heap.push(i)
+-    } else {
+-      index[i] = -1
+-    }
+-  }
+-  var heapCount = heap.length
+-  for(var i=heapCount>>1; i>=0; --i) {
+-    heapDown(i)
+-  }
+-  
+-  //Kill vertices
+-  while(true) {
+-    var hmin = heapPop()
+-    if((hmin < 0) || (weights[hmin] > minArea)) {
+-      break
+-    }
+-    kill(hmin)
+-  }
++    var src = '(' + bundleFn + ')({'
++        + Object.keys(workerSources).map(function (key) {
++            return stringify(key) + ':['
++                + sources[key][0]
++                + ',' + stringify(sources[key][1]) + ']'
++            ;
++        }).join(',')
++        + '},{},[' + stringify(skey) + '])'
++    ;
+ 
+-  //Build collapsed vertex table
+-  var npositions = []
+-  for(var i=0; i<n; ++i) {
+-    if(!dead[i]) {
+-      index[i] = npositions.length
+-      npositions.push(positions[i].slice())
+-    }
+-  }
+-  var nv = npositions.length
++    var URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
+ 
+-  function tortoiseHare(seq, start) {
+-    if(seq[start] < 0) {
+-      return start
+-    }
+-    var t = start
+-    var h = start
+-    do {
+-      //Walk two steps with h
+-      var nh = seq[h]
+-      if(!dead[h] || nh < 0 || nh === h) {
+-        break
+-      }
+-      h = nh
+-      nh = seq[h]
+-      if(!dead[h] || nh < 0 || nh === h) {
+-        break
+-      }
+-      h = nh
++    var blob = new Blob([src], { type: 'text/javascript' });
++    if (options && options.bare) { return blob; }
++    var workerUrl = URL.createObjectURL(blob);
++    var worker = new Worker(workerUrl);
++    worker.objectURL = workerUrl;
++    return worker;
++};
+ 
+-      //Walk one step with t
+-      t = seq[t]
+-    } while(t !== h)
+-    //Compress cycles
+-    for(var v=start; v!==h; v = seq[v]) {
+-      seq[v] = h
+-    }
+-    return h
+-  }
++},{}],470:[function(require,module,exports){
++module.exports.RADIUS = 6378137;
++module.exports.FLATTENING = 1/298.257223563;
++module.exports.POLAR_RADIUS = 6356752.3142;
+ 
+-  var ncells = []
+-  cells.forEach(function(c) {
+-    var tin = tortoiseHare(inv, c[0])
+-    var tout = tortoiseHare(outv, c[1])
+-    if(tin >= 0 && tout >= 0 && tin !== tout) {
+-      var cin = index[tin]
+-      var cout = index[tout]
+-      if(cin !== cout) {
+-        ncells.push([ cin, cout ])
+-      }
+-    }
+-  })
++},{}],471:[function(require,module,exports){
++module.exports = require('cwise-compiler')({
++    args: ['array', {
++        offset: [1],
++        array: 0
++    }, 'scalar', 'scalar', 'index'],
++    pre: {
++        "body": "{}",
++        "args": [],
++        "thisVars": [],
++        "localVars": []
++    },
++    post: {
++        "body": "{}",
++        "args": [],
++        "thisVars": [],
++        "localVars": []
++    },
++    body: {
++        "body": "{\n        var _inline_1_da = _inline_1_arg0_ - _inline_1_arg3_\n        var _inline_1_db = _inline_1_arg1_ - _inline_1_arg3_\n        if((_inline_1_da >= 0) !== (_inline_1_db >= 0)) {\n          _inline_1_arg2_.push(_inline_1_arg4_[0] + 0.5 + 0.5 * (_inline_1_da + _inline_1_db) / (_inline_1_da - _inline_1_db))\n        }\n      }",
++        "args": [{
++            "name": "_inline_1_arg0_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg1_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg2_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }, {
++            "name": "_inline_1_arg3_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 2
++        }, {
++            "name": "_inline_1_arg4_",
++            "lvalue": false,
++            "rvalue": true,
++            "count": 1
++        }],
++        "thisVars": [],
++        "localVars": ["_inline_1_da", "_inline_1_db"]
++    },
++    funcName: 'zeroCrossings'
++})
+ 
+-  //Normalize result
+-  sc.unique(sc.normalize(ncells))
++},{"cwise-compiler":86}],472:[function(require,module,exports){
++"use strict"
+ 
+-  //Return final list of cells
+-  return {
+-    positions: npositions,
+-    edges: ncells
+-  }
++module.exports = findZeroCrossings
++
++var core = require("./lib/zc-core")
++
++function findZeroCrossings(array, level) {
++  var cross = []
++  level = +level || 0.0
++  core(array.hi(array.shape[0]-1), cross, level)
++  return cross
+ }
+-},{"robust-orientation":439,"simplicial-complex":477}],479:[function(require,module,exports){
++},{"./lib/zc-core":471}],473:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -81070,7 +82810,7 @@ module.exports = [
+     }
+ ];
+ 
+-},{}],480:[function(require,module,exports){
++},{}],474:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -81263,7 +83003,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/cartesian/constants":596,"../../plots/font_attributes":609,"./arrow_paths":479}],481:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/cartesian/constants":590,"../../plots/font_attributes":603,"./arrow_paths":473}],475:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -82272,7 +84012,7 @@ function lineIntersect(x1, y1, x2, y2, x3, y3, x4, y4) {
+     return {x: x1 + a * t, y: y1 + d * t};
+ }
+ 
+-},{"../../lib":567,"../../lib/setcursor":576,"../../lib/svg_text_utils":580,"../../plotly":588,"../../plots/cartesian/axes":591,"../color":483,"../dragelement":504,"../drawing":506,"./arrow_paths":479,"./attributes":480,"d3":119,"fast-isnumeric":123}],482:[function(require,module,exports){
++},{"../../lib":561,"../../lib/setcursor":570,"../../lib/svg_text_utils":574,"../../plotly":582,"../../plots/cartesian/axes":585,"../color":477,"../dragelement":498,"../drawing":500,"./arrow_paths":473,"./attributes":474,"d3":90,"fast-isnumeric":98}],476:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -82312,7 +84052,7 @@ exports.borderLine = '#BEC8D9';
+ // gives back exactly lightLine if the other colors are defaults.
+ exports.lightFraction = 100 * (0xe - 0x4) / (0xf - 0x4);
+ 
+-},{}],483:[function(require,module,exports){
++},{}],477:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -82466,7 +84206,7 @@ function cleanOne(val) {
+     return 'rgb(' + rgbStr + ')';
+ }
+ 
+-},{"./attributes":482,"fast-isnumeric":123,"tinycolor2":454}],484:[function(require,module,exports){
++},{"./attributes":476,"fast-isnumeric":98,"tinycolor2":442}],478:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -82621,7 +84361,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/cartesian/layout_attributes":600,"../../plots/font_attributes":609}],485:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/cartesian/layout_attributes":594,"../../plots/font_attributes":603}],479:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -82688,7 +84428,7 @@ module.exports = function colorbarDefaults(containerIn, containerOut, layout) {
+     coerce('titleside');
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/tick_label_defaults":606,"../../plots/cartesian/tick_mark_defaults":607,"../../plots/cartesian/tick_value_defaults":608,"./attributes":484}],486:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/tick_label_defaults":600,"../../plots/cartesian/tick_mark_defaults":601,"../../plots/cartesian/tick_value_defaults":602,"./attributes":478}],480:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83318,7 +85058,7 @@ module.exports = function draw(gd, id) {
+     return component;
+ };
+ 
+-},{"../../lib":567,"../../lib/extend":562,"../../lib/setcursor":576,"../../plotly":588,"../../plots/cartesian/axes":591,"../../plots/cartesian/axis_defaults":592,"../../plots/cartesian/layout_attributes":600,"../../plots/cartesian/position_defaults":603,"../../plots/plots":647,"../color":483,"../dragelement":504,"../drawing":506,"../titles":546,"./attributes":484,"d3":119,"tinycolor2":454}],487:[function(require,module,exports){
++},{"../../lib":561,"../../lib/extend":556,"../../lib/setcursor":570,"../../plotly":582,"../../plots/cartesian/axes":585,"../../plots/cartesian/axis_defaults":586,"../../plots/cartesian/layout_attributes":594,"../../plots/cartesian/position_defaults":597,"../../plots/plots":641,"../color":477,"../dragelement":498,"../drawing":500,"../titles":540,"./attributes":478,"d3":90,"tinycolor2":442}],481:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83337,7 +85077,7 @@ module.exports = function hasColorbar(container) {
+     return Lib.isPlainObject(container.colorbar);
+ };
+ 
+-},{"../../lib":567}],488:[function(require,module,exports){
++},{"../../lib":561}],482:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83358,7 +85098,7 @@ exports.draw = require('./draw');
+ 
+ exports.hasColorbar = require('./has_colorbar');
+ 
+-},{"./attributes":484,"./defaults":485,"./draw":486,"./has_colorbar":487}],489:[function(require,module,exports){
++},{"./attributes":478,"./defaults":479,"./draw":480,"./has_colorbar":481}],483:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83413,7 +85153,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],490:[function(require,module,exports){
++},{}],484:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83479,7 +85219,7 @@ module.exports = function calc(trace, vals, containerStr, cLetter) {
+     }
+ };
+ 
+-},{"../../lib":567,"./flip_scale":494,"./scales":501}],491:[function(require,module,exports){
++},{"../../lib":561,"./flip_scale":488,"./scales":495}],485:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83523,7 +85263,7 @@ module.exports = function makeColorScaleAttributes(context) {
+     };
+ };
+ 
+-},{"../../lib/extend":562,"./attributes":489,"./scales.js":501}],492:[function(require,module,exports){
++},{"../../lib/extend":556,"./attributes":483,"./scales.js":495}],486:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83539,7 +85279,7 @@ var scales = require('./scales');
+ 
+ module.exports = scales.RdBu;
+ 
+-},{"./scales":501}],493:[function(require,module,exports){
++},{"./scales":495}],487:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83603,7 +85343,7 @@ module.exports = function colorScaleDefaults(traceIn, traceOut, layout, coerce,
+     if(showScale) colorbarDefaults(containerIn, containerOut, layout);
+ };
+ 
+-},{"../../lib":567,"../colorbar/defaults":485,"../colorbar/has_colorbar":487,"./flip_scale":494,"./is_valid_scale":498,"fast-isnumeric":123}],494:[function(require,module,exports){
++},{"../../lib":561,"../colorbar/defaults":479,"../colorbar/has_colorbar":481,"./flip_scale":488,"./is_valid_scale":492,"fast-isnumeric":98}],488:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83628,7 +85368,7 @@ module.exports = function flipScale(scl) {
+     return sclNew;
+ };
+ 
+-},{}],495:[function(require,module,exports){
++},{}],489:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83668,7 +85408,7 @@ module.exports = function getScale(scl, dflt) {
+     return scl;
+ };
+ 
+-},{"./default_scale":492,"./is_valid_scale_array":499,"./scales":501}],496:[function(require,module,exports){
++},{"./default_scale":486,"./is_valid_scale_array":493,"./scales":495}],490:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83714,7 +85454,7 @@ module.exports = function hasColorscale(trace, containerStr) {
+     );
+ };
+ 
+-},{"../../lib":567,"./is_valid_scale":498,"fast-isnumeric":123}],497:[function(require,module,exports){
++},{"../../lib":561,"./is_valid_scale":492,"fast-isnumeric":98}],491:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83746,7 +85486,7 @@ exports.flipScale = require('./flip_scale');
+ 
+ exports.makeScaleFunction = require('./make_scale_function');
+ 
+-},{"./attributes":489,"./calc":490,"./default_scale":492,"./defaults":493,"./flip_scale":494,"./get_scale":495,"./has_colorscale":496,"./is_valid_scale":498,"./make_scale_function":500,"./scales":501}],498:[function(require,module,exports){
++},{"./attributes":483,"./calc":484,"./default_scale":486,"./defaults":487,"./flip_scale":488,"./get_scale":489,"./has_colorscale":490,"./is_valid_scale":492,"./make_scale_function":494,"./scales":495}],492:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83767,7 +85507,7 @@ module.exports = function isValidScale(scl) {
+     else return isValidScaleArray(scl);
+ };
+ 
+-},{"./is_valid_scale_array":499,"./scales":501}],499:[function(require,module,exports){
++},{"./is_valid_scale_array":493,"./scales":495}],493:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83804,7 +85544,7 @@ module.exports = function isValidScaleArray(scl) {
+     return true;
+ };
+ 
+-},{"tinycolor2":454}],500:[function(require,module,exports){
++},{"tinycolor2":442}],494:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83853,7 +85593,7 @@ module.exports = function makeScaleFunction(scl, cmin, cmax) {
+     };
+ };
+ 
+-},{"../../lib":567,"../color":483,"d3":119,"fast-isnumeric":123,"tinycolor2":454}],501:[function(require,module,exports){
++},{"../../lib":561,"../color":477,"d3":90,"fast-isnumeric":98,"tinycolor2":442}],495:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -83984,7 +85724,7 @@ module.exports = {
+     ]
+ };
+ 
+-},{}],502:[function(require,module,exports){
++},{}],496:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84017,7 +85757,7 @@ module.exports = function align(v, dv, v0, v1, anchor) {
+     return vc;
+ };
+ 
+-},{}],503:[function(require,module,exports){
++},{}],497:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84055,7 +85795,7 @@ module.exports = function getCursor(x, y, xanchor, yanchor) {
+     return cursorset[y][x];
+ };
+ 
+-},{"../../lib":567}],504:[function(require,module,exports){
++},{"../../lib":561}],498:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84240,7 +85980,7 @@ function finishDrag(gd) {
+     if(gd._replotPending) Plotly.plot(gd);
+ }
+ 
+-},{"../../lib":567,"../../plotly":588,"../../plots/cartesian/constants":596,"./align":502,"./cursor":503,"./unhover":505}],505:[function(require,module,exports){
++},{"../../lib":561,"../../plotly":582,"../../plots/cartesian/constants":590,"./align":496,"./cursor":497,"./unhover":499}],499:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84291,7 +86031,7 @@ unhover.raw = function unhoverRaw(gd, evt) {
+     gd._hoverdata = undefined;
+ };
+ 
+-},{"../../lib/events":561}],506:[function(require,module,exports){
++},{"../../lib/events":555}],500:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -84855,7 +86595,7 @@ drawing.setClipUrl = function(s, localId) {
+     s.attr('clip-path', 'url(' + url + ')');
+ };
+ 
+-},{"../../constants/xmlns_namespaces":555,"../../lib":567,"../../lib/svg_text_utils":580,"../../plots/plots":647,"../../traces/scatter/make_bubble_size_func":763,"../../traces/scatter/subtypes":768,"../color":483,"../colorscale":497,"./symbol_defs":507,"d3":119,"fast-isnumeric":123}],507:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../../lib":561,"../../lib/svg_text_utils":574,"../../plots/plots":641,"../../traces/scatter/make_bubble_size_func":757,"../../traces/scatter/subtypes":762,"../color":477,"../colorscale":491,"./symbol_defs":501,"d3":90,"fast-isnumeric":98}],501:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85331,7 +87071,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"d3":119}],508:[function(require,module,exports){
++},{"d3":90}],502:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85430,7 +87170,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],509:[function(require,module,exports){
++},{}],503:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85493,7 +87233,7 @@ function calcOneAxis(calcTrace, trace, axis, coord) {
+     Axes.expand(axis, vals, {padded: true});
+ }
+ 
+-},{"../../plots/cartesian/axes":591,"../../plots/plots":647,"./compute_error":510,"fast-isnumeric":123}],510:[function(require,module,exports){
++},{"../../plots/cartesian/axes":585,"../../plots/plots":641,"./compute_error":504,"fast-isnumeric":98}],504:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85589,7 +87329,7 @@ function makeComputeErrorValue(type, value) {
+     }
+ }
+ 
+-},{}],511:[function(require,module,exports){
++},{}],505:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85666,7 +87406,7 @@ module.exports = function(traceIn, traceOut, defaultColor, opts) {
+     }
+ };
+ 
+-},{"../../lib":567,"../../plots/plots":647,"./attributes":508,"fast-isnumeric":123}],512:[function(require,module,exports){
++},{"../../lib":561,"../../plots/plots":641,"./attributes":502,"fast-isnumeric":98}],506:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85725,7 +87465,7 @@ errorBars.hoverInfo = function(calcPoint, trace, hoverPoint) {
+     }
+ };
+ 
+-},{"./attributes":508,"./calc":509,"./defaults":511,"./plot":513,"./style":514}],513:[function(require,module,exports){
++},{"./attributes":502,"./calc":503,"./defaults":505,"./plot":507,"./style":508}],507:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85846,7 +87586,7 @@ function errorCoords(d, xa, ya) {
+     return out;
+ }
+ 
+-},{"../../lib":567,"../../traces/scatter/subtypes":768,"d3":119,"fast-isnumeric":123}],514:[function(require,module,exports){
++},{"../../lib":561,"../../traces/scatter/subtypes":762,"d3":90,"fast-isnumeric":98}],508:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85883,7 +87623,7 @@ module.exports = function style(traces) {
+     });
+ };
+ 
+-},{"../color":483,"d3":119}],515:[function(require,module,exports){
++},{"../color":477,"d3":90}],509:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -85998,7 +87738,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../plots/cartesian/constants":596}],516:[function(require,module,exports){
++},{"../../plots/cartesian/constants":590}],510:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86064,7 +87804,7 @@ function imageDefaults(imageIn, imageOut, fullLayout) {
+     return imageOut;
+ }
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"./attributes":515}],517:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"./attributes":509}],511:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86237,7 +87977,7 @@ module.exports = function draw(gd) {
+     imagesAbove.each(applyAttributes);
+ };
+ 
+-},{"../../plots/cartesian/axes":591,"../drawing":506,"d3":119}],518:[function(require,module,exports){
++},{"../../plots/cartesian/axes":585,"../drawing":500,"d3":90}],512:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86260,7 +88000,7 @@ module.exports = {
+     supplyLayoutDefaults: supplyLayoutDefaults
+ };
+ 
+-},{"./attributes":515,"./defaults":516,"./draw":517}],519:[function(require,module,exports){
++},{"./attributes":509,"./defaults":510,"./draw":511}],513:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86309,7 +88049,7 @@ exports.isMiddleAnchor = function isMiddleAnchor(opts) {
+     );
+ };
+ 
+-},{}],520:[function(require,module,exports){
++},{}],514:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86354,6 +88094,13 @@ module.exports = {
+         
+         
+     },
++    horizontalspacing: {
++        valType: 'enumerated',
++        values: ['column', 'wrapped'],
++        dflt: ['column'],
++        
++        
++    },
+     traceorder: {
+         valType: 'flaglist',
+         flags: ['reversed', 'grouped'],
+@@ -86400,7 +88147,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/font_attributes":609,"../color/attributes":482}],521:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/font_attributes":603,"../color/attributes":476}],515:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86418,7 +88165,7 @@ module.exports = {
+     scrollBarMargin: 4
+ };
+ 
+-},{}],522:[function(require,module,exports){
++},{}],516:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86443,6 +88190,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+ 
+     var visibleTraces = 0,
+         defaultOrder = 'normal',
++        defaultHorizontalSpacing = 'column',
+         defaultX,
+         defaultY,
+         defaultXAnchor,
+@@ -86507,10 +88255,11 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+     coerce('xanchor', defaultXAnchor);
+     coerce('y', defaultY);
+     coerce('yanchor', defaultYAnchor);
++    coerce('horizontalspacing', defaultHorizontalSpacing);
+     Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
+ };
+ 
+-},{"../../lib":567,"../../plots/plots":647,"./attributes":520,"./helpers":525}],523:[function(require,module,exports){
++},{"../../lib":561,"../../plots/plots":641,"./attributes":514,"./helpers":519}],517:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -86987,7 +88736,8 @@ function computeLegendDimensions(gd, groups, traces) {
+     var fullLayout = gd._fullLayout,
+         opts = fullLayout.legend,
+         borderwidth = opts.borderwidth,
+-        isGrouped = helpers.isGrouped(opts);
++        isGrouped = helpers.isGrouped(opts),
++        isHorizontalColumn = helpers.isHorizontalColumn(opts);
+ 
+     if(helpers.isVertical(opts)) {
+         if(isGrouped) {
+@@ -87094,7 +88844,7 @@ function computeLegendDimensions(gd, groups, traces) {
+         traces.each(function(d) {
+ 
+             var legendItem = d[0],
+-                traceWidth = maxTraceWidth,
++                traceWidth = isHorizontalColumn ? maxTraceWidth : 40 + d[0],
+                 traceGap = opts.tracegroupgap || 5;
+ 
+             if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
+@@ -87183,7 +88933,7 @@ function expandHorizontalMargin(gd) {
+     });
+ }
+ 
+-},{"../../lib":567,"../../plotly":588,"../../plots/plots":647,"../color":483,"../dragelement":504,"../drawing":506,"./anchor_utils":519,"./constants":521,"./get_legend_data":524,"./helpers":525,"./style":527,"d3":119}],524:[function(require,module,exports){
++},{"../../lib":561,"../../plotly":582,"../../plots/plots":641,"../color":477,"../dragelement":498,"../drawing":500,"./anchor_utils":513,"./constants":515,"./get_legend_data":518,"./helpers":519,"./style":521,"d3":90}],518:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -87289,7 +89039,7 @@ module.exports = function getLegendData(calcdata, opts) {
+     return legendData;
+ };
+ 
+-},{"../../plots/plots":647,"./helpers":525}],525:[function(require,module,exports){
++},{"../../plots/plots":641,"./helpers":519}],519:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -87320,7 +89070,10 @@ exports.isReversed = function isReversed(legendLayout) {
+     return (legendLayout.traceorder || '').indexOf('reversed') !== -1;
+ };
+ 
+-},{"../../plots/plots":647}],526:[function(require,module,exports){
++exports.isHorizontalColumn = function isReversed(legendLayout) {
++    return legendLayout.horizontalspacing === 'column';
++};
++},{"../../plots/plots":641}],520:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -87343,7 +89096,7 @@ legend.draw = require('./draw');
+ 
+ legend.style = require('./style');
+ 
+-},{"./attributes":520,"./defaults":522,"./draw":523,"./style":527}],527:[function(require,module,exports){
++},{"./attributes":514,"./defaults":516,"./draw":517,"./style":521}],521:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -87565,7 +89318,7 @@ function stylePies(d) {
+     if(pts.size()) pts.call(stylePie, d[0], trace);
+ }
+ 
+-},{"../../lib":567,"../../plots/plots":647,"../../traces/pie/style_one":747,"../../traces/scatter/subtypes":768,"../color":483,"../drawing":506,"d3":119}],528:[function(require,module,exports){
++},{"../../lib":561,"../../plots/plots":641,"../../traces/pie/style_one":741,"../../traces/scatter/subtypes":762,"../color":477,"../drawing":500,"d3":90}],522:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -88073,7 +89826,7 @@ modeBarButtons.resetViews = {
+     }
+ };
+ 
+-},{"../../../build/ploticon":2,"../../lib":567,"../../plotly":588,"../../snapshot/download":662}],529:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":561,"../../plotly":582,"../../snapshot/download":656}],523:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -88363,7 +90116,7 @@ function createModeBar(gd, buttons) {
+ 
+ module.exports = createModeBar;
+ 
+-},{"../../../build/ploticon":2,"../../lib":567,"d3":119}],530:[function(require,module,exports){
++},{"../../../build/ploticon":2,"../../lib":561,"d3":90}],524:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -88591,7 +90344,7 @@ function fillCustomButton(customButtons) {
+     return customButtons;
+ }
+ 
+-},{"../../plotly":588,"../../traces/scatter/subtypes":768,"./":529,"./buttons":528}],531:[function(require,module,exports){
++},{"../../plotly":582,"../../traces/scatter/subtypes":762,"./":523,"./buttons":522}],525:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -88680,7 +90433,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/font_attributes":609,"../color/attributes":482,"./button_attributes":532}],532:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/font_attributes":603,"../color/attributes":476,"./button_attributes":526}],526:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -88721,7 +90474,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],533:[function(require,module,exports){
++},{}],527:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -88750,7 +90503,7 @@ module.exports = {
+     darkAmount: 10
+ };
+ 
+-},{}],534:[function(require,module,exports){
++},{}],528:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -88842,7 +90595,7 @@ function getPosDflt(containerOut, layout, counterAxes) {
+     return [containerOut.domain[0], posY + constants.yPad];
+ }
+ 
+-},{"../../lib":567,"../color":483,"./attributes":531,"./button_attributes":532,"./constants":533}],535:[function(require,module,exports){
++},{"../../lib":561,"../color":477,"./attributes":525,"./button_attributes":526,"./constants":527}],529:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89117,7 +90870,7 @@ function reposition(gd, buttons, opts, axName) {
+     });
+ }
+ 
+-},{"../../lib/svg_text_utils":580,"../../plotly":588,"../../plots/cartesian/axis_ids":593,"../../plots/plots":647,"../color":483,"../drawing":506,"../legend/anchor_utils":519,"./constants":533,"./get_update_object":536,"d3":119}],536:[function(require,module,exports){
++},{"../../lib/svg_text_utils":574,"../../plotly":582,"../../plots/cartesian/axis_ids":587,"../../plots/plots":641,"../color":477,"../drawing":500,"../legend/anchor_utils":513,"./constants":527,"./get_update_object":530,"d3":90}],530:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89175,7 +90928,7 @@ function getXRange(axisLayout, buttonLayout) {
+     return [range0, range1];
+ }
+ 
+-},{"d3":119}],537:[function(require,module,exports){
++},{"d3":90}],531:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89193,7 +90946,7 @@ exports.supplyLayoutDefaults = require('./defaults');
+ 
+ exports.draw = require('./draw');
+ 
+-},{"./attributes":531,"./defaults":534,"./draw":535}],538:[function(require,module,exports){
++},{"./attributes":525,"./defaults":528,"./draw":529}],532:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89251,7 +91004,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../color/attributes":482}],539:[function(require,module,exports){
++},{"../color/attributes":476}],533:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89547,7 +91300,7 @@ module.exports = function createSlider(gd) {
+         });
+ };
+ 
+-},{"../../constants/xmlns_namespaces":555,"../../lib":567,"../../plotly":588,"../../plots/cartesian/axes":591,"./helpers":541,"./range_plot":543}],540:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../../lib":561,"../../plotly":582,"../../plots/cartesian/axes":585,"./helpers":535,"./range_plot":537}],534:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89600,7 +91353,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, axName, coun
+     }
+ };
+ 
+-},{"../../lib":567,"./attributes":538}],541:[function(require,module,exports){
++},{"../../lib":561,"./attributes":532}],535:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89626,7 +91379,7 @@ exports.appendChildren = function appendChildren(el, children) {
+     }
+ };
+ 
+-},{}],542:[function(require,module,exports){
++},{}],536:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89683,7 +91436,7 @@ function draw(gd) {
+     });
+ }
+ 
+-},{"../../plots/plots":647,"./create_slider":539,"./defaults":540}],543:[function(require,module,exports){
++},{"../../plots/plots":641,"./create_slider":533,"./defaults":534}],537:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89864,7 +91617,7 @@ function makeScatter(trace, pointPairs, w, h) {
+     return [line, markers, fill];
+ }
+ 
+-},{"../../constants/xmlns_namespaces":555,"../../lib":567,"../drawing":506,"../drawing/symbol_defs":507,"./helpers":541,"d3":119}],544:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../../lib":561,"../drawing":500,"../drawing/symbol_defs":501,"./helpers":535,"d3":90}],538:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -89955,7 +91708,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../traces/scatter/attributes":749,"../annotations/attributes":480}],545:[function(require,module,exports){
++},{"../../lib/extend":556,"../../traces/scatter/attributes":743,"../annotations/attributes":474}],539:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -90745,7 +92498,7 @@ function shapeBounds(ax, v0, v1, path, paramsToUse) {
+     if(max >= min) return [min, max];
+ }
+ 
+-},{"../../lib":567,"../../lib/setcursor":576,"../../plotly":588,"../../plots/cartesian/axes":591,"../color":483,"../dragelement":504,"../drawing":506,"./attributes":544,"fast-isnumeric":123}],546:[function(require,module,exports){
++},{"../../lib":561,"../../lib/setcursor":570,"../../plotly":582,"../../plots/cartesian/axes":585,"../color":477,"../dragelement":498,"../drawing":500,"./attributes":538,"fast-isnumeric":98}],540:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -90975,7 +92728,7 @@ Titles.draw = function(gd, titleClass, options) {
+     el.classed('js-placeholder', isplaceholder);
+ };
+ 
+-},{"../../lib":567,"../../lib/svg_text_utils":580,"../../plotly":588,"../../plots/plots":647,"../color":483,"../drawing":506,"d3":119,"fast-isnumeric":123}],547:[function(require,module,exports){
++},{"../../lib":561,"../../lib/svg_text_utils":574,"../../plotly":582,"../../plots/plots":641,"../color":477,"../drawing":500,"d3":90,"fast-isnumeric":98}],541:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91093,7 +92846,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/font_attributes":609,"../color/attributes":482}],548:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/font_attributes":603,"../color/attributes":476}],542:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91168,7 +92921,7 @@ module.exports = {
+     hoverColor: '#F4FAFF'
+ };
+ 
+-},{}],549:[function(require,module,exports){
++},{}],543:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91264,7 +93017,7 @@ function buttonsDefaults(menuIn, menuOut) {
+     return buttonsOut;
+ }
+ 
+-},{"../../lib":567,"./attributes":547,"./constants":548}],550:[function(require,module,exports){
++},{"../../lib":561,"./attributes":541,"./constants":542}],544:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91723,7 +93476,7 @@ function clearPushMargins(gd) {
+     }
+ }
+ 
+-},{"../../lib":567,"../../lib/svg_text_utils":580,"../../plotly":588,"../../plots/plots":647,"../color":483,"../drawing":506,"../legend/anchor_utils":519,"./constants":548,"d3":119}],551:[function(require,module,exports){
++},{"../../lib":561,"../../lib/svg_text_utils":574,"../../plotly":582,"../../plots/plots":641,"../color":477,"../drawing":500,"../legend/anchor_utils":513,"./constants":542,"d3":90}],545:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91741,7 +93494,7 @@ exports.supplyLayoutDefaults = require('./defaults');
+ 
+ exports.draw = require('./draw');
+ 
+-},{"./attributes":547,"./defaults":549,"./draw":550}],552:[function(require,module,exports){
++},{"./attributes":541,"./defaults":543,"./draw":544}],546:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91762,7 +93515,7 @@ module.exports = {
+     longdashdot: [8, 1, 1, 1]
+ };
+ 
+-},{}],553:[function(require,module,exports){
++},{}],547:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91783,7 +93536,7 @@ module.exports = {
+     longdashdot: [[0.5, 0.7, 0.8, 1], 10]
+ };
+ 
+-},{}],554:[function(require,module,exports){
++},{}],548:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91806,7 +93559,7 @@ module.exports = {
+     x: '❌'
+ };
+ 
+-},{}],555:[function(require,module,exports){
++},{}],549:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91830,7 +93583,7 @@ exports.svgAttrs = {
+     'xmlns:xlink': exports.xlink
+ };
+ 
+-},{}],556:[function(require,module,exports){
++},{}],550:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91881,7 +93634,7 @@ exports.Queue = Plotly.Queue;
+ // export d3 used in the bundle
+ exports.d3 = require('d3');
+ 
+-},{"../build/ploticon":2,"./plot_api/set_plot_config":585,"./plot_api/to_image":586,"./plot_api/validate":587,"./plotly":588,"./snapshot/download":662,"d3":119}],557:[function(require,module,exports){
++},{"../build/ploticon":2,"./plot_api/set_plot_config":579,"./plot_api/to_image":580,"./plot_api/validate":581,"./plotly":582,"./snapshot/download":656,"d3":90}],551:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91914,7 +93667,7 @@ if(typeof MathJax !== 'undefined') {
+     exports.MathJax = false;
+ }
+ 
+-},{}],558:[function(require,module,exports){
++},{}],552:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -91931,7 +93684,7 @@ module.exports = function arrayToCalcItem(traceAttr, calcItem, calcAttr, i) {
+     if(Array.isArray(traceAttr)) calcItem[calcAttr] = traceAttr[i];
+ };
+ 
+-},{}],559:[function(require,module,exports){
++},{}],553:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92241,7 +93994,7 @@ exports.validate = function(value, opts) {
+     return out !== failed;
+ };
+ 
+-},{"../components/colorscale/get_scale":495,"../components/colorscale/scales":501,"./nested_property":571,"fast-isnumeric":123,"tinycolor2":454}],560:[function(require,module,exports){
++},{"../components/colorscale/get_scale":489,"../components/colorscale/scales":495,"./nested_property":565,"fast-isnumeric":98,"tinycolor2":442}],554:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92580,7 +94333,7 @@ exports.parseDate = function(v) {
+     return out;
+ };
+ 
+-},{"../lib":567,"d3":119,"fast-isnumeric":123}],561:[function(require,module,exports){
++},{"../lib":561,"d3":90,"fast-isnumeric":98}],555:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92714,7 +94467,7 @@ var Events = {
+ 
+ module.exports = Events;
+ 
+-},{"events":57}],562:[function(require,module,exports){
++},{"events":96}],556:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92828,7 +94581,7 @@ function _extend(inputs, isDeep, keepAllKeys, noArrayCopies) {
+     return target;
+ }
+ 
+-},{"./is_plain_object.js":568}],563:[function(require,module,exports){
++},{"./is_plain_object.js":562}],557:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92852,7 +94605,7 @@ module.exports = function filterVisible(dataIn) {
+     return dataOut;
+ };
+ 
+-},{}],564:[function(require,module,exports){
++},{}],558:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92911,7 +94664,7 @@ function countryNameToISO3(countryName) {
+     Lib.warn('Unrecognized country name: ' + countryName + '.');
+ }
+ 
+-},{"../lib":567,"country-regex":114}],565:[function(require,module,exports){
++},{"../lib":561,"country-regex":83}],559:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -92990,7 +94743,7 @@ function formatColor(containerIn, opacityIn, len) {
+ 
+ module.exports = formatColor;
+ 
+-},{"../components/color/attributes":482,"../components/colorscale/make_scale_function":500,"./str2rgbarray":579,"fast-isnumeric":123,"tinycolor2":454}],566:[function(require,module,exports){
++},{"../components/color/attributes":476,"../components/colorscale/make_scale_function":494,"./str2rgbarray":573,"fast-isnumeric":98,"tinycolor2":442}],560:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93064,7 +94817,7 @@ function convertHTMLToUnicode(html) {
+ 
+ module.exports = convertHTMLToUnicode;
+ 
+-},{"superscript-text":443}],567:[function(require,module,exports){
++},{"superscript-text":439}],561:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93684,7 +95437,7 @@ lib.numSeparate = function(value, separators) {
+     return x1 + x2;
+ };
+ 
+-},{"./coerce":559,"./dates":560,"./extend":562,"./is_plain_object":568,"./loggers":569,"./matrix":570,"./nested_property":571,"./notifier":572,"./search":575,"./stats":578,"d3":119}],568:[function(require,module,exports){
++},{"./coerce":553,"./dates":554,"./extend":556,"./is_plain_object":562,"./loggers":563,"./matrix":564,"./nested_property":565,"./notifier":566,"./search":569,"./stats":572,"d3":90}],562:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93713,7 +95466,7 @@ module.exports = function isPlainObject(obj) {
+     );
+ };
+ 
+-},{}],569:[function(require,module,exports){
++},{}],563:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93780,7 +95533,7 @@ loggers.error = function() {
+ };
+ /* eslint-enable no-console */
+ 
+-},{"../plot_api/plot_config":583}],570:[function(require,module,exports){
++},{"../plot_api/plot_config":577}],564:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -93890,7 +95643,7 @@ exports.apply2DTransform2 = function(transform) {
+     };
+ };
+ 
+-},{}],571:[function(require,module,exports){
++},{}],565:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94146,7 +95899,7 @@ function badContainer(container, propStr, propParts) {
+     };
+ }
+ 
+-},{"fast-isnumeric":123}],572:[function(require,module,exports){
++},{"fast-isnumeric":98}],566:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94223,7 +95976,7 @@ module.exports = function(text, displayLength) {
+         });
+ };
+ 
+-},{"d3":119,"fast-isnumeric":123}],573:[function(require,module,exports){
++},{"d3":90,"fast-isnumeric":98}],567:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94463,7 +96216,7 @@ polygon.filter = function filter(pts, tolerance) {
+     };
+ };
+ 
+-},{"./matrix":570}],574:[function(require,module,exports){
++},{"./matrix":564}],568:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94674,7 +96427,7 @@ queue.plotDo = function(gd, func, args) {
+ 
+ module.exports = queue;
+ 
+-},{"../lib":567,"../plot_api/plot_config":583}],575:[function(require,module,exports){
++},{"../lib":561,"../plot_api/plot_config":577}],569:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94786,7 +96539,7 @@ exports.roundUp = function(val, arrayIn, reverse) {
+     return arrayIn[low];
+ };
+ 
+-},{"../lib":567,"fast-isnumeric":123}],576:[function(require,module,exports){
++},{"../lib":561,"fast-isnumeric":98}],570:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94809,7 +96562,7 @@ module.exports = function setCursor(el3, csr) {
+     if(csr) el3.classed('cursor-' + csr, true);
+ };
+ 
+-},{}],577:[function(require,module,exports){
++},{}],571:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94858,7 +96611,7 @@ module.exports = function showWebGlMsg(scene) {
+     return false;
+ };
+ 
+-},{"../components/color":483}],578:[function(require,module,exports){
++},{"../components/color":477}],572:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94954,7 +96707,7 @@ exports.interp = function(arr, n) {
+     return frac * arr[Math.ceil(n)] + (1 - frac) * arr[Math.floor(n)];
+ };
+ 
+-},{"fast-isnumeric":123}],579:[function(require,module,exports){
++},{"fast-isnumeric":98}],573:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -94976,7 +96729,7 @@ function str2RgbaArray(color) {
+ 
+ module.exports = str2RgbaArray;
+ 
+-},{"arraytools":50,"tinycolor2":454}],580:[function(require,module,exports){
++},{"arraytools":28,"tinycolor2":442}],574:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -95477,7 +97230,7 @@ util.makeEditable = function(context, _delegate, options) {
+     return d3.rebind(this, dispatch, 'on');
+ };
+ 
+-},{"../constants/xmlns_namespaces":555,"../lib":567,"../plotly":588,"d3":119}],581:[function(require,module,exports){
++},{"../constants/xmlns_namespaces":549,"../lib":561,"../plotly":582,"d3":90}],575:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -95513,7 +97266,7 @@ topojsonUtils.getTopojsonFeatures = function(trace, topojson) {
+     return topojsonFeature(topojson, obj).features;
+ };
+ 
+-},{"../plots/geo/constants":610,"topojson":455}],582:[function(require,module,exports){
++},{"../plots/geo/constants":604,"topojson":444}],576:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -98628,7 +100381,7 @@ function drawMainTitle(gd) {
+     });
+ }
+ 
+-},{"../components/color":483,"../components/drawing":506,"../components/errorbars":512,"../components/images":518,"../components/legend":526,"../components/modebar/manage":530,"../components/rangeselector":537,"../components/rangeslider":542,"../components/shapes":545,"../components/titles":546,"../components/updatemenus":551,"../constants/xmlns_namespaces":555,"../lib":567,"../lib/events":561,"../lib/queue":574,"../plotly":588,"../plots/cartesian/graph_interact":598,"../plots/plots":647,"d3":119,"fast-isnumeric":123,"gl-mat4/fromQuat":140}],583:[function(require,module,exports){
++},{"../components/color":477,"../components/drawing":500,"../components/errorbars":506,"../components/images":512,"../components/legend":520,"../components/modebar/manage":524,"../components/rangeselector":531,"../components/rangeslider":536,"../components/shapes":539,"../components/titles":540,"../components/updatemenus":545,"../constants/xmlns_namespaces":549,"../lib":561,"../lib/events":555,"../lib/queue":568,"../plotly":582,"../plots/cartesian/graph_interact":592,"../plots/plots":641,"d3":90,"fast-isnumeric":98,"gl-mat4/fromQuat":139}],577:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -98737,7 +100490,7 @@ function defaultSetBackground(gd, bgColor) {
+     catch(e) { Lib.error(e); }
+ }
+ 
+-},{"../lib":567}],584:[function(require,module,exports){
++},{"../lib":561}],578:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99077,7 +100830,7 @@ function handleLinkedToArray(layoutAttributes) {
+     PlotSchema.crawl(layoutAttributes, callback);
+ }
+ 
+-},{"../lib":567,"../plotly":588,"../plots/plots":647,"../plots/polar/area_attributes":648,"../plots/polar/axis_attributes":649}],585:[function(require,module,exports){
++},{"../lib":561,"../plotly":582,"../plots/plots":641,"../plots/polar/area_attributes":642,"../plots/polar/axis_attributes":643}],579:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99103,7 +100856,7 @@ module.exports = function setPlotConfig(configObj) {
+     return Lib.extendFlat(Plotly.defaultConfig, configObj);
+ };
+ 
+-},{"../lib":567,"../plotly":588}],586:[function(require,module,exports){
++},{"../lib":561,"../plotly":582}],580:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99216,7 +100969,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":567,"../plotly":588,"../snapshot":664,"fast-isnumeric":123}],587:[function(require,module,exports){
++},{"../lib":561,"../plotly":582,"../snapshot":658,"fast-isnumeric":98}],581:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99586,7 +101339,7 @@ function convertPathToAttributeString(path) {
+     return astr;
+ }
+ 
+-},{"../lib":567,"../plots/plots":647,"./plot_schema":584}],588:[function(require,module,exports){
++},{"../lib":561,"../plots/plots":641,"./plot_schema":578}],582:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99704,7 +101457,7 @@ exports.PlotSchema = require('./plot_api/plot_schema');
+ // imaging routines
+ exports.Snapshot = require('./snapshot');
+ 
+-},{"../build/plotcss":1,"./components/annotations":481,"./components/color":483,"./components/colorbar":488,"./components/colorscale":497,"./components/drawing":506,"./components/errorbars":512,"./components/images":518,"./components/legend":526,"./components/modebar":529,"./components/shapes":545,"./components/updatemenus":551,"./fonts/mathjax_config":557,"./lib":567,"./lib/queue":574,"./lib/svg_text_utils":580,"./plot_api/plot_api":582,"./plot_api/plot_config":583,"./plot_api/plot_schema":584,"./plots/cartesian/axes":591,"./plots/cartesian/graph_interact":598,"./plots/plots":647,"./plots/polar/micropolar":650,"./snapshot":664,"./traces/scatter":759,"es6-promise":122}],589:[function(require,module,exports){
++},{"../build/plotcss":1,"./components/annotations":475,"./components/color":477,"./components/colorbar":482,"./components/colorscale":491,"./components/drawing":500,"./components/errorbars":506,"./components/images":512,"./components/legend":520,"./components/modebar":523,"./components/shapes":539,"./components/updatemenus":545,"./fonts/mathjax_config":551,"./lib":561,"./lib/queue":568,"./lib/svg_text_utils":574,"./plot_api/plot_api":576,"./plot_api/plot_config":577,"./plot_api/plot_schema":578,"./plots/cartesian/axes":585,"./plots/cartesian/graph_interact":592,"./plots/plots":641,"./plots/polar/micropolar":644,"./snapshot":658,"./traces/scatter":753,"es6-promise":95}],583:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99785,7 +101538,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],590:[function(require,module,exports){
++},{}],584:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99812,7 +101565,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],591:[function(require,module,exports){
++},{}],585:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -99987,14 +101740,27 @@ axes.getAutoRange = function(ax) {
+     }
+ 
+     if(minmin === maxmax) {
+-        newRange = axReverse ?
+-            [minmin + 1, ax.rangemode !== 'normal' ? 0 : minmin - 1] :
+-            [ax.rangemode !== 'normal' ? 0 : minmin - 1, minmin + 1];
++        var lower = minmin - 1;
++        var upper = minmin + 1;
++        if(ax.rangemode === 'tozero') {
++            newRange = minmin < 0 ? [lower, 0] : [0, upper];
++        }
++        else if(ax.rangemode === 'nonnegative') {
++            newRange = [Math.max(0, lower), Math.max(0, upper)];
++        }
++        else {
++            newRange = [lower, upper];
++        }
+     }
+     else if(mbest) {
+         if(ax.type === 'linear' || ax.type === '-') {
+-            if(ax.rangemode === 'tozero' && minbest.val >= 0) {
+-                minbest = {val: 0, pad: 0};
++            if(ax.rangemode === 'tozero') {
++                if(minbest.val >= 0) {
++                    minbest = {val: 0, pad: 0};
++                }
++                if(maxbest.val <= 0) {
++                    maxbest = {val: 0, pad: 0};
++                }
+             }
+             else if(ax.rangemode === 'nonnegative') {
+                 if(minbest.val - mbest * minbest.pad < 0) {
+@@ -100008,22 +101774,39 @@ axes.getAutoRange = function(ax) {
+             // in case it changed again...
+             mbest = (maxbest.val - minbest.val) /
+                 (ax._length - minbest.pad - maxbest.pad);
++
+         }
+ 
+         newRange = [
+             minbest.val - mbest * minbest.pad,
+             maxbest.val + mbest * maxbest.pad
+         ];
++    }
+ 
+-        // don't let axis have zero size
+-        if(newRange[0] === newRange[1]) {
++    // don't let axis have zero size, while still respecting tozero and nonnegative
++    if(newRange[0] === newRange[1]) {
++        if(ax.rangemode === 'tozero') {
++            if(newRange[0] < 0) {
++                newRange = [newRange[0], 0];
++            }
++            else if(newRange[0] > 0) {
++                newRange = [0, newRange[0]];
++            }
++            else {
++                newRange = [0, 1];
++            }
++        }
++        else {
+             newRange = [newRange[0] - 1, newRange[0] + 1];
++            if(ax.rangemode === 'nonnegative') {
++                newRange[0] = Math.max(0, newRange[0]);
++            }
+         }
++    }
+ 
+-        // maintain reversal
+-        if(axReverse) {
+-            newRange.reverse();
+-        }
++    // maintain reversal
++    if(axReverse) {
++        newRange.reverse();
+     }
+ 
+     return newRange;
+@@ -101806,7 +103589,7 @@ function swapAxisAttrs(layout, key, xFullAxes, yFullAxes) {
+ // rather than built-in % which gives a negative value for negative v
+ function mod(v, d) { return ((v % d) + d) % d; }
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"../../components/titles":546,"../../lib":567,"../../lib/svg_text_utils":580,"../../plotly":588,"./axis_ids":593,"./layout_attributes":600,"./layout_defaults":601,"./set_convert":605,"d3":119,"fast-isnumeric":123}],592:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"../../components/titles":540,"../../lib":561,"../../lib/svg_text_utils":574,"../../plotly":582,"./axis_ids":587,"./layout_attributes":594,"./layout_defaults":595,"./set_convert":599,"d3":90,"fast-isnumeric":98}],586:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -102089,7 +103872,7 @@ function category(a) {
+     return curvecats > curvenums * 2;
+ }
+ 
+-},{"../../components/color/attributes":482,"../../lib":567,"../plots":647,"./axis_ids":593,"./category_order_defaults":594,"./clean_datum":595,"./layout_attributes":600,"./ordered_categories":602,"./set_convert":605,"./tick_label_defaults":606,"./tick_mark_defaults":607,"./tick_value_defaults":608,"fast-isnumeric":123,"tinycolor2":454}],593:[function(require,module,exports){
++},{"../../components/color/attributes":476,"../../lib":561,"../plots":641,"./axis_ids":587,"./category_order_defaults":588,"./clean_datum":589,"./layout_attributes":594,"./ordered_categories":596,"./set_convert":599,"./tick_label_defaults":600,"./tick_mark_defaults":601,"./tick_value_defaults":602,"fast-isnumeric":98,"tinycolor2":442}],587:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -102210,7 +103993,7 @@ exports.getFromTrace = function(gd, fullTrace, type) {
+     return ax;
+ };
+ 
+-},{"../../lib":567,"../plots":647,"./constants":596}],594:[function(require,module,exports){
++},{"../../lib":561,"../plots":641,"./constants":590}],588:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -102244,7 +104027,7 @@ module.exports = function handleCategoryOrderDefaults(containerIn, containerOut,
+     }
+ };
+ 
+-},{}],595:[function(require,module,exports){
++},{}],589:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -102283,7 +104066,7 @@ module.exports = function cleanDatum(c) {
+     return c;
+ };
+ 
+-},{"../../lib":567,"fast-isnumeric":123}],596:[function(require,module,exports){
++},{"../../lib":561,"fast-isnumeric":98}],590:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -102361,7 +104144,7 @@ module.exports = {
+     REDRAWDELAY: 50
+ };
+ 
+-},{}],597:[function(require,module,exports){
++},{}],591:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -103050,7 +104833,7 @@ function isSelectOrLasso(dragmode) {
+     return modes.indexOf(dragmode) !== -1;
+ }
+ 
+-},{"../../components/color":483,"../../components/dragelement":504,"../../components/drawing":506,"../../lib":567,"../../lib/setcursor":576,"../../lib/svg_text_utils":580,"../../plotly":588,"./axes":591,"./constants":596,"./select":604,"d3":119,"tinycolor2":454}],598:[function(require,module,exports){
++},{"../../components/color":477,"../../components/dragelement":498,"../../components/drawing":500,"../../lib":561,"../../lib/setcursor":570,"../../lib/svg_text_utils":574,"../../plotly":582,"./axes":585,"./constants":590,"./select":598,"d3":90,"tinycolor2":442}],592:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -104392,7 +106175,7 @@ fx.inbox = function(v0, v1) {
+     return Infinity;
+ };
+ 
+-},{"../../components/color":483,"../../components/dragelement":504,"../../components/drawing":506,"../../lib":567,"../../lib/events":561,"../../lib/svg_text_utils":580,"./axes":591,"./constants":596,"./dragbox":597,"d3":119,"fast-isnumeric":123,"tinycolor2":454}],599:[function(require,module,exports){
++},{"../../components/color":477,"../../components/dragelement":498,"../../components/drawing":500,"../../lib":561,"../../lib/events":555,"../../lib/svg_text_utils":574,"./axes":585,"./constants":590,"./dragbox":591,"d3":90,"fast-isnumeric":98,"tinycolor2":442}],593:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -104479,7 +106262,7 @@ exports.plot = function(gd) {
+     }
+ };
+ 
+-},{"../plots":647,"./attributes":590,"./constants":596}],600:[function(require,module,exports){
++},{"../plots":641,"./attributes":584,"./constants":590}],594:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -104824,7 +106607,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/color/attributes":482,"../../components/rangeselector/attributes":531,"../../components/rangeslider/attributes":538,"../../lib/extend":562,"../font_attributes":609,"./constants":596}],601:[function(require,module,exports){
++},{"../../components/color/attributes":476,"../../components/rangeselector/attributes":525,"../../components/rangeslider/attributes":532,"../../lib/extend":556,"../font_attributes":603,"./constants":590}],595:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -104997,7 +106780,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
+     });
+ };
+ 
+-},{"../../components/color":483,"../../components/rangeselector":537,"../../components/rangeslider":542,"../../lib":567,"../plots":647,"./axis_defaults":592,"./axis_ids":593,"./constants":596,"./layout_attributes":600,"./position_defaults":603}],602:[function(require,module,exports){
++},{"../../components/color":477,"../../components/rangeselector":531,"../../components/rangeslider":536,"../../lib":561,"../plots":641,"./axis_defaults":586,"./axis_ids":587,"./constants":590,"./layout_attributes":594,"./position_defaults":597}],596:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105076,7 +106859,7 @@ module.exports = function orderedCategories(axisLetter, categoryorder, categorya
+     }
+ };
+ 
+-},{"d3":119}],603:[function(require,module,exports){
++},{"d3":90}],597:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105141,7 +106924,7 @@ module.exports = function handlePositionDefaults(containerIn, containerOut, coer
+     return containerOut;
+ };
+ 
+-},{"../../lib":567,"fast-isnumeric":123}],604:[function(require,module,exports){
++},{"../../lib":561,"fast-isnumeric":98}],598:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105341,7 +107124,7 @@ module.exports = function prepSelect(e, startX, startY, dragOptions, mode) {
+     };
+ };
+ 
+-},{"../../components/color":483,"../../lib/polygon":573,"./axes":591,"./constants":596}],605:[function(require,module,exports){
++},{"../../components/color":477,"../../lib/polygon":567,"./axes":585,"./constants":590}],599:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105585,7 +107368,7 @@ module.exports = function setConvert(ax) {
+     ax._forceTick0 = null;
+ };
+ 
+-},{"../../lib":567,"./axis_ids":593,"./clean_datum":595,"./constants":596,"d3":119,"fast-isnumeric":123}],606:[function(require,module,exports){
++},{"../../lib":561,"./axis_ids":587,"./clean_datum":589,"./constants":590,"d3":90,"fast-isnumeric":98}],600:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105668,7 +107451,7 @@ function getShowAttrDflt(containerIn) {
+     }
+ }
+ 
+-},{"../../lib":567}],607:[function(require,module,exports){
++},{"../../lib":561}],601:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105701,7 +107484,7 @@ module.exports = function handleTickDefaults(containerIn, containerOut, coerce,
+     }
+ };
+ 
+-},{"../../lib":567,"./layout_attributes":600}],608:[function(require,module,exports){
++},{"../../lib":561,"./layout_attributes":594}],602:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105742,7 +107525,7 @@ module.exports = function handleTickValueDefaults(containerIn, containerOut, coe
+     }
+ };
+ 
+-},{"fast-isnumeric":123}],609:[function(require,module,exports){
++},{"fast-isnumeric":98}],603:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105773,7 +107556,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],610:[function(require,module,exports){
++},{}],604:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -105931,7 +107714,7 @@ params.layerNameToAdjective = {
+ // base layers drawn over choropleth
+ params.baseLayersOverChoropleth = ['rivers', 'lakes'];
+ 
+-},{}],611:[function(require,module,exports){
++},{}],605:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106425,7 +108208,7 @@ function createMockAxis(fullLayout) {
+     return mockAxis;
+ }
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"../../constants/xmlns_namespaces":555,"../../lib/filter_visible":563,"../../lib/topojson_utils":581,"../../plots/cartesian/axes":591,"./constants":610,"./projections":618,"./set_scale":619,"./zoom":620,"./zoom_reset":621,"d3":119,"topojson":455}],612:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"../../constants/xmlns_namespaces":549,"../../lib/filter_visible":557,"../../lib/topojson_utils":575,"../../plots/cartesian/axes":585,"./constants":604,"./projections":612,"./set_scale":613,"./zoom":614,"./zoom_reset":615,"d3":90,"topojson":444}],606:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106531,7 +108314,7 @@ exports.toSVG = function(gd) {
+     }
+ };
+ 
+-},{"../../plots/plots":647,"./geo":611,"./layout/attributes":613,"./layout/defaults":616,"./layout/layout_attributes":617}],613:[function(require,module,exports){
++},{"../../plots/plots":641,"./geo":605,"./layout/attributes":607,"./layout/defaults":610,"./layout/layout_attributes":611}],607:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106552,7 +108335,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],614:[function(require,module,exports){
++},{}],608:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106607,7 +108390,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../../components/color/attributes":482}],615:[function(require,module,exports){
++},{"../../../components/color/attributes":476}],609:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106681,7 +108464,7 @@ module.exports = function supplyGeoAxisLayoutDefaults(geoLayoutIn, geoLayoutOut)
+     }
+ };
+ 
+-},{"../../../lib":567,"../constants":610,"./axis_attributes":614}],616:[function(require,module,exports){
++},{"../../../lib":561,"../constants":604,"./axis_attributes":608}],610:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -106800,7 +108583,7 @@ function handleGeoDefaults(geoLayoutIn, geoLayoutOut, coerce) {
+     ];
+ }
+ 
+-},{"../../subplot_defaults":653,"../constants":610,"./axis_defaults":615,"./layout_attributes":617}],617:[function(require,module,exports){
++},{"../../subplot_defaults":647,"../constants":604,"./axis_defaults":609,"./layout_attributes":611}],611:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -107033,7 +108816,7 @@ module.exports = {
+     lataxis: geoAxesAttrs
+ };
+ 
+-},{"../../../components/color/attributes":482,"../constants":610,"./axis_attributes":614}],618:[function(require,module,exports){
++},{"../../../components/color/attributes":476,"../constants":604,"./axis_attributes":608}],612:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -107479,7 +109262,7 @@ function addProjectionsToD3(d3) {
+ 
+ module.exports = addProjectionsToD3;
+ 
+-},{}],619:[function(require,module,exports){
++},{}],613:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -107630,7 +109413,7 @@ function getBounds(projection, rangeBox) {
+     return d3.geo.path().projection(projection).bounds(rangeBox);
+ }
+ 
+-},{"./constants":610,"d3":119}],620:[function(require,module,exports){
++},{"./constants":604,"d3":90}],614:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -108057,7 +109840,7 @@ function d3_eventDispatch(target) {
+     return dispatch;
+ }
+ 
+-},{"d3":119}],621:[function(require,module,exports){
++},{"d3":90}],615:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -108092,7 +109875,7 @@ function createGeoZoomReset(geo, geoLayout) {
+ 
+ module.exports = createGeoZoomReset;
+ 
+-},{"../cartesian/graph_interact":598}],622:[function(require,module,exports){
++},{"../cartesian/graph_interact":592}],616:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -108247,7 +110030,7 @@ function createCamera(scene) {
+     return result;
+ }
+ 
+-},{"mouse-change":421,"mouse-wheel":425}],623:[function(require,module,exports){
++},{"mouse-change":371,"mouse-wheel":373}],617:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -108490,7 +110273,7 @@ function createAxes2D(scene) {
+ 
+ module.exports = createAxes2D;
+ 
+-},{"../../lib/html2unicode":566,"../../lib/str2rgbarray":579,"../../plotly":588}],624:[function(require,module,exports){
++},{"../../lib/html2unicode":560,"../../lib/str2rgbarray":573,"../../plotly":582}],618:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -108602,7 +110385,7 @@ exports.toSVG = function(gd) {
+     }
+ };
+ 
+-},{"../../constants/xmlns_namespaces":555,"../cartesian/attributes":590,"../plots":647,"./scene2d":625}],625:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../cartesian/attributes":584,"../plots":641,"./scene2d":619}],619:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109151,7 +110934,7 @@ proto.hoverFormatter = function(axisName, val) {
+     return Axes.tickText(axis, axis.c2l(val), 'hover').text;
+ };
+ 
+-},{"../../lib/html2unicode":566,"../../lib/show_no_webgl_msg":577,"../../plots/cartesian/axes":591,"../../plots/cartesian/graph_interact":598,"./camera":622,"./convert":623,"gl-plot2d":171,"gl-select-box":201,"gl-spikes2d":221}],626:[function(require,module,exports){
++},{"../../lib/html2unicode":560,"../../lib/show_no_webgl_msg":571,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592,"./camera":616,"./convert":617,"gl-plot2d":173,"gl-select-box":188,"gl-spikes2d":197}],620:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109394,7 +111177,7 @@ function createCamera(element, options) {
+     return camera;
+ }
+ 
+-},{"3d-view":40,"mouse-change":421,"mouse-wheel":425,"right-now":435}],627:[function(require,module,exports){
++},{"3d-view":22,"mouse-change":371,"mouse-wheel":373,"right-now":412}],621:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109528,7 +111311,7 @@ function initAxes(gd, sceneLayout) {
+     }
+ }
+ 
+-},{"../../constants/xmlns_namespaces":555,"../plots":647,"./layout/attributes":628,"./layout/defaults":632,"./layout/layout_attributes":633,"./scene":637,"./set_convert":638}],628:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../plots":641,"./layout/attributes":622,"./layout/defaults":626,"./layout/layout_attributes":627,"./scene":631,"./set_convert":632}],622:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109549,7 +111332,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],629:[function(require,module,exports){
++},{}],623:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109655,7 +111438,7 @@ module.exports = {
+     zerolinewidth: axesAttrs.zerolinewidth
+ };
+ 
+-},{"../../../components/color":483,"../../../lib/extend":562,"../../cartesian/layout_attributes":600}],630:[function(require,module,exports){
++},{"../../../components/color":477,"../../../lib/extend":556,"../../cartesian/layout_attributes":594}],624:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109724,7 +111507,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, options) {
+     }
+ };
+ 
+-},{"../../../lib":567,"../../cartesian/axis_defaults":592,"./axis_attributes":629,"tinycolor2":454}],631:[function(require,module,exports){
++},{"../../../lib":561,"../../cartesian/axis_defaults":586,"./axis_attributes":623,"tinycolor2":442}],625:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109880,7 +111663,7 @@ function createAxesOptions(plotlyOptions) {
+ 
+ module.exports = createAxesOptions;
+ 
+-},{"../../../lib/html2unicode":566,"../../../lib/str2rgbarray":579,"arraytools":50}],632:[function(require,module,exports){
++},{"../../../lib/html2unicode":560,"../../../lib/str2rgbarray":573,"arraytools":28}],626:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -109987,7 +111770,7 @@ function handleGl3dDefaults(sceneLayoutIn, sceneLayoutOut, coerce, opts) {
+     coerce('hovermode', opts.getDfltFromLayout('hovermode'));
+ }
+ 
+-},{"../../../components/color":483,"../../subplot_defaults":653,"./axis_defaults":630,"./layout_attributes":633}],633:[function(require,module,exports){
++},{"../../../components/color":477,"../../subplot_defaults":647,"./axis_defaults":624,"./layout_attributes":627}],627:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110115,7 +111898,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../../lib/extend":562,"./axis_attributes":629}],634:[function(require,module,exports){
++},{"../../../lib/extend":556,"./axis_attributes":623}],628:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110161,7 +111944,7 @@ function createSpikeOptions(layout) {
+ 
+ module.exports = createSpikeOptions;
+ 
+-},{"../../../lib/str2rgbarray":579}],635:[function(require,module,exports){
++},{"../../../lib/str2rgbarray":573}],629:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110256,7 +112039,7 @@ function computeTickMarks(scene) {
+     scene.contourLevels = contourLevelsFromTicks(ticks);
+ }
+ 
+-},{"../../../lib/html2unicode":566,"../../../plotly":588}],636:[function(require,module,exports){
++},{"../../../lib/html2unicode":560,"../../../plotly":582}],630:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -110290,7 +112073,7 @@ function project(camera, v) {
+ 
+ module.exports = project;
+ 
+-},{}],637:[function(require,module,exports){
++},{}],631:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111020,7 +112803,7 @@ proto.toImage = function(format) {
+ 
+ module.exports = Scene;
+ 
+-},{"../../lib":567,"../../lib/show_no_webgl_msg":577,"../../lib/str2rgbarray":579,"../../plots/cartesian/axes":591,"../../plots/cartesian/graph_interact":598,"../../plots/plots":647,"./camera":626,"./layout/convert":631,"./layout/spikes":634,"./layout/tick_marks":635,"./project":636,"./set_convert":638,"gl-plot3d":189}],638:[function(require,module,exports){
++},{"../../lib":561,"../../lib/show_no_webgl_msg":571,"../../lib/str2rgbarray":573,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592,"../../plots/plots":641,"./camera":620,"./layout/convert":625,"./layout/spikes":628,"./layout/tick_marks":629,"./project":630,"./set_convert":632,"gl-plot3d":175}],632:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111042,7 +112825,7 @@ module.exports = function setConvert(containerOut) {
+     containerOut.setScale = noop;
+ };
+ 
+-},{"../cartesian/axes":591}],639:[function(require,module,exports){
++},{"../cartesian/axes":585}],633:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111207,7 +112990,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../components/color/attributes":482,"../plotly":588,"./font_attributes":609}],640:[function(require,module,exports){
++},{"../components/color/attributes":476,"../plotly":582,"./font_attributes":603}],634:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111237,7 +113020,7 @@ module.exports = {
+     mapOnErrorMsg: 'Mapbox error.'
+ };
+ 
+-},{}],641:[function(require,module,exports){
++},{}],635:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111311,7 +113094,7 @@ module.exports = function convertTextOpts(textposition, iconSize) {
+     return { anchor: anchor, offset: offset };
+ };
+ 
+-},{"../../lib":567}],642:[function(require,module,exports){
++},{"../../lib":561}],636:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111464,7 +113247,7 @@ function findAccessToken(gd, mapboxIds) {
+     return accessToken;
+ }
+ 
+-},{"../../constants/xmlns_namespaces":555,"../plots":647,"./constants":640,"./layout_attributes":644,"./layout_defaults":645,"./mapbox":646,"mapbox-gl":260}],643:[function(require,module,exports){
++},{"../../constants/xmlns_namespaces":549,"../plots":641,"./constants":634,"./layout_attributes":638,"./layout_defaults":639,"./mapbox":640,"mapbox-gl":273}],637:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111689,7 +113472,7 @@ module.exports = function createMapboxLayer(mapbox, index, opts) {
+     return mapboxLayer;
+ };
+ 
+-},{"../../lib":567,"./convert_text_opts":641}],644:[function(require,module,exports){
++},{"../../lib":561,"./convert_text_opts":635}],638:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111892,7 +113675,7 @@ module.exports = {
+ 
+ };
+ 
+-},{"../../components/color":483,"../../lib":567,"../../traces/scatter/attributes":749,"../font_attributes":609}],645:[function(require,module,exports){
++},{"../../components/color":477,"../../lib":561,"../../traces/scatter/attributes":743,"../font_attributes":603}],639:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -111988,7 +113771,7 @@ function handleLayerDefaults(containerIn, containerOut) {
+     }
+ }
+ 
+-},{"../../lib":567,"../subplot_defaults":653,"./layout_attributes":644}],646:[function(require,module,exports){
++},{"../../lib":561,"../subplot_defaults":647,"./layout_attributes":638}],640:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -112426,7 +114209,7 @@ function convertCenter(center) {
+     return [center.lon, center.lat];
+ }
+ 
+-},{"../../lib":567,"../cartesian/graph_interact":598,"./constants":640,"./layers":643,"./layout_attributes":644,"mapbox-gl":260}],647:[function(require,module,exports){
++},{"../../lib":561,"../cartesian/graph_interact":592,"./constants":634,"./layers":637,"./layout_attributes":638,"mapbox-gl":273}],641:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -113617,7 +115400,7 @@ plots.graphJson = function(gd, dataonly, mode, output, useDefaults) {
+     return (output === 'object') ? obj : JSON.stringify(obj);
+ };
+ 
+-},{"../components/color":483,"../lib":567,"../plotly":588,"./attributes":589,"./font_attributes":609,"./layout_attributes":639,"d3":119,"fast-isnumeric":123}],648:[function(require,module,exports){
++},{"../components/color":477,"../lib":561,"../plotly":582,"./attributes":583,"./font_attributes":603,"./layout_attributes":633,"d3":90,"fast-isnumeric":98}],642:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -113642,7 +115425,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../traces/scatter/attributes":749}],649:[function(require,module,exports){
++},{"../../traces/scatter/attributes":743}],643:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -113757,7 +115540,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../cartesian/layout_attributes":600}],650:[function(require,module,exports){
++},{"../../lib/extend":556,"../cartesian/layout_attributes":594}],644:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -115180,7 +116963,7 @@ var extendDeepAll = Plotly.Lib.extendDeepAll;
+     return exports;
+ };
+ 
+-},{"../../plotly":588,"./micropolar_manager":651,"d3":119}],651:[function(require,module,exports){
++},{"../../plotly":582,"./micropolar_manager":645,"d3":90}],645:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -115263,7 +117046,7 @@ manager.fillLayout = function(_gd) {
+     _gd._fullLayout = extendDeepAll(dflts, _gd.layout);
+ };
+ 
+-},{"../../plotly":588,"./undo_manager":652,"d3":119}],652:[function(require,module,exports){
++},{"../../plotly":582,"./undo_manager":646,"d3":90}],646:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -115329,7 +117112,7 @@ module.exports = function UndoManager() {
+     };
+ };
+ 
+-},{}],653:[function(require,module,exports){
++},{}],647:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -115404,7 +117187,7 @@ module.exports = function handleSubplotDefaults(layoutIn, layoutOut, fullData, o
+     }
+ };
+ 
+-},{"../lib":567,"./plots":647}],654:[function(require,module,exports){
++},{"../lib":561,"./plots":641}],648:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -115478,7 +117261,7 @@ exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout)
+     }
+ };
+ 
+-},{"../../plots/plots":647,"./layout/attributes":655,"./layout/defaults":658,"./layout/layout_attributes":659,"./ternary":660}],655:[function(require,module,exports){
++},{"../../plots/plots":641,"./layout/attributes":649,"./layout/defaults":652,"./layout/layout_attributes":653,"./ternary":654}],649:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -115499,7 +117282,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],656:[function(require,module,exports){
++},{}],650:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -115558,7 +117341,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../../lib/extend":562,"../../cartesian/layout_attributes":600}],657:[function(require,module,exports){
++},{"../../../lib/extend":556,"../../cartesian/layout_attributes":594}],651:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -115642,7 +117425,7 @@ module.exports = function supplyLayoutDefaults(containerIn, containerOut, option
+     }
+ };
+ 
+-},{"../../../lib":567,"../../cartesian/tick_label_defaults":606,"../../cartesian/tick_mark_defaults":607,"../../cartesian/tick_value_defaults":608,"./axis_attributes":656,"tinycolor2":454}],658:[function(require,module,exports){
++},{"../../../lib":561,"../../cartesian/tick_label_defaults":600,"../../cartesian/tick_mark_defaults":601,"../../cartesian/tick_value_defaults":602,"./axis_attributes":650,"tinycolor2":442}],652:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -115705,7 +117488,7 @@ function handleTernaryDefaults(ternaryLayoutIn, ternaryLayoutOut, coerce, option
+     }
+ }
+ 
+-},{"../../../components/color":483,"../../subplot_defaults":653,"./axis_defaults":657,"./layout_attributes":659}],659:[function(require,module,exports){
++},{"../../../components/color":477,"../../subplot_defaults":647,"./axis_defaults":651,"./layout_attributes":653}],653:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -115761,7 +117544,7 @@ module.exports = {
+     caxis: ternaryAxesAttrs
+ };
+ 
+-},{"../../../components/color/attributes":482,"./axis_attributes":656}],660:[function(require,module,exports){
++},{"../../../components/color/attributes":476,"./axis_attributes":650}],654:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116451,7 +118234,7 @@ function removeZoombox(gd) {
+         .remove();
+ }
+ 
+-},{"../../components/color":483,"../../components/dragelement":504,"../../components/drawing":506,"../../components/titles":546,"../../lib":567,"../../lib/extend":562,"../../lib/filter_visible":563,"../../plotly":588,"../cartesian/axes":591,"../cartesian/constants":596,"../cartesian/graph_interact":598,"../cartesian/select":604,"../cartesian/set_convert":605,"d3":119,"tinycolor2":454}],661:[function(require,module,exports){
++},{"../../components/color":477,"../../components/dragelement":498,"../../components/drawing":500,"../../components/titles":540,"../../lib":561,"../../lib/extend":556,"../../lib/filter_visible":557,"../../plotly":582,"../cartesian/axes":585,"../cartesian/constants":590,"../cartesian/graph_interact":592,"../cartesian/select":598,"../cartesian/set_convert":599,"d3":90,"tinycolor2":442}],655:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116607,7 +118390,7 @@ module.exports = function clonePlot(graphObj, options) {
+     return plotTile;
+ };
+ 
+-},{"../plotly":588}],662:[function(require,module,exports){
++},{"../plotly":582}],656:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116673,7 +118456,7 @@ function downloadImage(gd, opts) {
+ 
+ module.exports = downloadImage;
+ 
+-},{"../lib":567,"../plot_api/to_image":586,"./filesaver":663}],663:[function(require,module,exports){
++},{"../lib":561,"../plot_api/to_image":580,"./filesaver":657}],657:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116741,7 +118524,7 @@ var fileSaver = function(url, name) {
+ 
+ module.exports = fileSaver;
+ 
+-},{}],664:[function(require,module,exports){
++},{}],658:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116786,7 +118569,7 @@ var Snapshot = {
+ 
+ module.exports = Snapshot;
+ 
+-},{"./cloneplot":661,"./download":662,"./svgtoimg":665,"./toimage":666,"./tosvg":667}],665:[function(require,module,exports){
++},{"./cloneplot":655,"./download":656,"./svgtoimg":659,"./toimage":660,"./tosvg":661}],659:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116917,7 +118700,7 @@ function svgToImg(opts) {
+ 
+ module.exports = svgToImg;
+ 
+-},{"../lib":567,"events":57}],666:[function(require,module,exports){
++},{"../lib":561,"events":96}],660:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -116996,7 +118779,7 @@ function toImage(gd, opts) {
+ 
+ module.exports = toImage;
+ 
+-},{"../lib":567,"../plotly":588,"events":57}],667:[function(require,module,exports){
++},{"../lib":561,"../plotly":582,"events":96}],661:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117108,7 +118891,7 @@ module.exports = function toSVG(gd, format) {
+     return s;
+ };
+ 
+-},{"../components/color":483,"../components/drawing":506,"../constants/xmlns_namespaces":555,"../lib/svg_text_utils":580,"d3":119}],668:[function(require,module,exports){
++},{"../components/color":477,"../components/drawing":500,"../constants/xmlns_namespaces":549,"../lib/svg_text_utils":574,"d3":90}],662:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117136,7 +118919,7 @@ module.exports = function arraysToCalcdata(cd) {
+     mergeArray(markerLine.width, cd, 'mlw');
+ };
+ 
+-},{"../../lib":567}],669:[function(require,module,exports){
++},{"../../lib":561}],663:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117204,7 +118987,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../lib/extend":562,"../scatter/attributes":749}],670:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../lib/extend":556,"../scatter/attributes":743}],664:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117269,7 +119052,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../components/colorscale/calc":490,"../../components/colorscale/has_colorscale":496,"../../plots/cartesian/axes":591,"fast-isnumeric":123}],671:[function(require,module,exports){
++},{"../../components/colorscale/calc":484,"../../components/colorscale/has_colorscale":490,"../../plots/cartesian/axes":585,"fast-isnumeric":98}],665:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117311,7 +119094,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     errorBarsSupplyDefaults(traceIn, traceOut, Color.defaultLine, {axis: 'x', inherit: 'y'});
+ };
+ 
+-},{"../../components/color":483,"../../components/errorbars/defaults":511,"../../lib":567,"../bar/style_defaults":679,"../scatter/xy_defaults":770,"./attributes":669}],672:[function(require,module,exports){
++},{"../../components/color":477,"../../components/errorbars/defaults":505,"../../lib":561,"../bar/style_defaults":673,"../scatter/xy_defaults":764,"./attributes":663}],666:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117402,7 +119185,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     return [pointData];
+ };
+ 
+-},{"../../components/color":483,"../../components/errorbars":512,"../../plots/cartesian/graph_interact":598}],673:[function(require,module,exports){
++},{"../../components/color":477,"../../components/errorbars":506,"../../plots/cartesian/graph_interact":592}],667:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117438,7 +119221,7 @@ Bar.meta = {
+ 
+ module.exports = Bar;
+ 
+-},{"../../plots/cartesian":599,"../scatter/colorbar":752,"./arrays_to_calcdata":668,"./attributes":669,"./calc":670,"./defaults":671,"./hover":672,"./layout_attributes":674,"./layout_defaults":675,"./plot":676,"./set_positions":677,"./style":678}],674:[function(require,module,exports){
++},{"../../plots/cartesian":593,"../scatter/colorbar":746,"./arrays_to_calcdata":662,"./attributes":663,"./calc":664,"./defaults":665,"./hover":666,"./layout_attributes":668,"./layout_defaults":669,"./plot":670,"./set_positions":671,"./style":672}],668:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117482,7 +119265,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],675:[function(require,module,exports){
++},{}],669:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117540,7 +119323,7 @@ module.exports = function(layoutIn, layoutOut, fullData) {
+     coerce('bargroupgap');
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"../../plots/plots":647,"./layout_attributes":674}],676:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"../../plots/plots":641,"./layout_attributes":668}],670:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117652,7 +119435,7 @@ module.exports = function plot(gd, plotinfo, cdbar) {
+ 
+ };
+ 
+-},{"../../components/color":483,"../../components/errorbars":512,"../../lib":567,"./arrays_to_calcdata":668,"d3":119,"fast-isnumeric":123}],677:[function(require,module,exports){
++},{"../../components/color":477,"../../components/errorbars":506,"../../lib":561,"./arrays_to_calcdata":662,"d3":90,"fast-isnumeric":98}],671:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117883,7 +119666,7 @@ module.exports = function setPositions(gd, plotinfo) {
+     });
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"../../plots/plots":647,"fast-isnumeric":123}],678:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"../../plots/plots":641,"fast-isnumeric":98}],672:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117962,7 +119745,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"../../components/errorbars":512,"d3":119}],679:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"../../components/errorbars":506,"d3":90}],673:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -117999,7 +119782,7 @@ module.exports = function handleStyleDefaults(traceIn, traceOut, coerce, default
+     coerce('marker.line.width');
+ };
+ 
+-},{"../../components/color":483,"../../components/colorscale/defaults":493,"../../components/colorscale/has_colorscale":496}],680:[function(require,module,exports){
++},{"../../components/color":477,"../../components/colorscale/defaults":487,"../../components/colorscale/has_colorscale":490}],674:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118130,7 +119913,7 @@ module.exports = {
+     fillcolor: scatterAttrs.fillcolor
+ };
+ 
+-},{"../../components/color/attributes":482,"../../lib/extend":562,"../scatter/attributes":749}],681:[function(require,module,exports){
++},{"../../components/color/attributes":476,"../../lib/extend":556,"../scatter/attributes":743}],675:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118279,7 +120062,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"fast-isnumeric":123}],682:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"fast-isnumeric":98}],676:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118348,7 +120131,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor) {
+     }
+ };
+ 
+-},{"../../components/color":483,"../../lib":567,"./attributes":680}],683:[function(require,module,exports){
++},{"../../components/color":477,"../../lib":561,"./attributes":674}],677:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118457,7 +120240,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     return closeData;
+ };
+ 
+-},{"../../components/color":483,"../../lib":567,"../../plots/cartesian/axes":591,"../../plots/cartesian/graph_interact":598}],684:[function(require,module,exports){
++},{"../../components/color":477,"../../lib":561,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592}],678:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118490,7 +120273,7 @@ Box.meta = {
+ 
+ module.exports = Box;
+ 
+-},{"../../plots/cartesian":599,"./attributes":680,"./calc":681,"./defaults":682,"./hover":683,"./layout_attributes":685,"./layout_defaults":686,"./plot":687,"./set_positions":688,"./style":689}],685:[function(require,module,exports){
++},{"../../plots/cartesian":593,"./attributes":674,"./calc":675,"./defaults":676,"./hover":677,"./layout_attributes":679,"./layout_defaults":680,"./plot":681,"./set_positions":682,"./style":683}],679:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118528,7 +120311,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],686:[function(require,module,exports){
++},{}],680:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118562,7 +120345,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
+     coerce('boxgroupgap');
+ };
+ 
+-},{"../../lib":567,"../../plots/plots":647,"./layout_attributes":685}],687:[function(require,module,exports){
++},{"../../lib":561,"../../plots/plots":641,"./layout_attributes":679}],681:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118789,7 +120572,7 @@ module.exports = function plot(gd, plotinfo, cdbox) {
+     });
+ };
+ 
+-},{"../../components/drawing":506,"../../lib":567,"d3":119}],688:[function(require,module,exports){
++},{"../../components/drawing":500,"../../lib":561,"d3":90}],682:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118882,7 +120665,7 @@ module.exports = function setPositions(gd, plotinfo) {
+     }
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"../../plots/plots":647}],689:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"../../plots/plots":641}],683:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118921,7 +120704,7 @@ module.exports = function style(gd) {
+         });
+ };
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"d3":119}],690:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"d3":90}],684:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118969,7 +120752,7 @@ module.exports = extendFlat({}, {
+     colorscaleAttrs
+ );
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../../plots/attributes":589,"../scattergeo/attributes":777}],691:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../../plots/attributes":583,"../scattergeo/attributes":771}],685:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -118988,7 +120771,7 @@ module.exports = function calc(gd, trace) {
+     colorscaleCalc(trace, trace.z, '', 'z');
+ };
+ 
+-},{"../../components/colorscale/calc":490}],692:[function(require,module,exports){
++},{"../../components/colorscale/calc":484}],686:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119043,7 +120826,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     coerce('hoverinfo', (layout._dataLength === 1) ? 'location+z+text' : undefined);
+ };
+ 
+-},{"../../components/colorscale/defaults":493,"../../lib":567,"./attributes":690}],693:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487,"../../lib":561,"./attributes":684}],687:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119073,7 +120856,7 @@ Choropleth.meta = {
+ 
+ module.exports = Choropleth;
+ 
+-},{"../../plots/geo":612,"../heatmap/colorbar":707,"./attributes":690,"./calc":691,"./defaults":692,"./plot":694}],694:[function(require,module,exports){
++},{"../../plots/geo":606,"../heatmap/colorbar":701,"./attributes":684,"./calc":685,"./defaults":686,"./plot":688}],688:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119294,7 +121077,7 @@ function makeEventDataFunc(trace) {
+     };
+ }
+ 
+-},{"../../components/color":483,"../../components/colorscale/get_scale":495,"../../components/colorscale/make_scale_function":500,"../../components/drawing":506,"../../lib/array_to_calc_item":558,"../../lib/geo_location_utils":564,"../../lib/topojson_utils":581,"../../plots/cartesian/axes":591,"../../plots/cartesian/graph_interact":598,"../../plots/geo/constants":610,"./attributes":690,"d3":119}],695:[function(require,module,exports){
++},{"../../components/color":477,"../../components/colorscale/get_scale":489,"../../components/colorscale/make_scale_function":494,"../../components/drawing":500,"../../lib/array_to_calc_item":552,"../../lib/geo_location_utils":558,"../../lib/topojson_utils":575,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592,"../../plots/geo/constants":604,"./attributes":684,"d3":90}],689:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119394,7 +121177,7 @@ module.exports = extendFlat({},
+     {autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false})}
+ );
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../heatmap/attributes":705,"../scatter/attributes":749}],696:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../heatmap/attributes":699,"../scatter/attributes":743}],690:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119447,7 +121230,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../plots/cartesian/axes":591,"../heatmap/calc":706}],697:[function(require,module,exports){
++},{"../../plots/cartesian/axes":585,"../heatmap/calc":700}],691:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119508,7 +121291,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(trace.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":486,"../../plots/plots":647,"./make_color_map":701}],698:[function(require,module,exports){
++},{"../../components/colorbar/draw":480,"../../plots/plots":641,"./make_color_map":695}],692:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119552,7 +121335,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     handleStyleDefaults(traceIn, traceOut, coerce, layout);
+ };
+ 
+-},{"../../lib":567,"../contour/style_defaults":704,"../heatmap/has_columns":710,"../heatmap/xyz_defaults":716,"./attributes":695}],699:[function(require,module,exports){
++},{"../../lib":561,"../contour/style_defaults":698,"../heatmap/has_columns":704,"../heatmap/xyz_defaults":710,"./attributes":689}],693:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119571,7 +121354,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     return heatmapHoverPoints(pointData, xval, yval, hovermode, true);
+ };
+ 
+-},{"../heatmap/hover":711}],700:[function(require,module,exports){
++},{"../heatmap/hover":705}],694:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119603,7 +121386,7 @@ Contour.meta = {
+ 
+ module.exports = Contour;
+ 
+-},{"../../plots/cartesian":599,"./attributes":695,"./calc":696,"./colorbar":697,"./defaults":698,"./hover":699,"./plot":702,"./style":703}],701:[function(require,module,exports){
++},{"../../plots/cartesian":593,"./attributes":689,"./calc":690,"./colorbar":691,"./defaults":692,"./hover":693,"./plot":696,"./style":697}],695:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -119683,7 +121466,7 @@ module.exports = function makeColorMap(trace) {
+     return colorMap;
+ };
+ 
+-},{"../../components/colorscale/get_scale":495,"d3":119}],702:[function(require,module,exports){
++},{"../../components/colorscale/get_scale":489,"d3":90}],696:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120393,7 +122176,7 @@ function makeClipMask(cd0) {
+     return z;
+ }
+ 
+-},{"../../components/drawing":506,"../../lib":567,"../heatmap/plot":714,"d3":119}],703:[function(require,module,exports){
++},{"../../components/drawing":500,"../../lib":561,"../heatmap/plot":708,"d3":90}],697:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120450,7 +122233,7 @@ module.exports = function style(gd) {
+     heatmapStyle(gd);
+ };
+ 
+-},{"../../components/drawing":506,"../heatmap/style":715,"./make_color_map":701,"d3":119}],704:[function(require,module,exports){
++},{"../../components/drawing":500,"../heatmap/style":709,"./make_color_map":695,"d3":90}],698:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120486,7 +122269,7 @@ module.exports = function handleStyleDefaults(traceIn, traceOut, coerce, layout)
+     }
+ };
+ 
+-},{"../../components/colorscale/defaults":493}],705:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487}],699:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -120558,7 +122341,7 @@ module.exports = extendFlat({},
+     {autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false})}
+ );
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../scatter/attributes":749}],706:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../scatter/attributes":743}],700:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121004,7 +122787,7 @@ function iterateInterp2d(z, emptyPoints, overshoot) {
+     return maxFractionalChange;
+ }
+ 
+-},{"../../components/colorscale/calc":490,"../../lib":567,"../../plots/cartesian/axes":591,"../../plots/plots":647,"../histogram2d/calc":726,"./convert_column_xyz":708,"./has_columns":710,"./max_row_length":713,"fast-isnumeric":123}],707:[function(require,module,exports){
++},{"../../components/colorscale/calc":484,"../../lib":561,"../../plots/cartesian/axes":585,"../../plots/plots":641,"../histogram2d/calc":720,"./convert_column_xyz":702,"./has_columns":704,"./max_row_length":707,"fast-isnumeric":98}],701:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121050,7 +122833,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(trace.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":486,"../../components/colorscale/get_scale":495,"../../lib":567,"../../plots/plots":647,"d3":119,"fast-isnumeric":123}],708:[function(require,module,exports){
++},{"../../components/colorbar/draw":480,"../../components/colorscale/get_scale":489,"../../lib":561,"../../plots/plots":641,"d3":90,"fast-isnumeric":98}],702:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121107,7 +122890,7 @@ module.exports = function convertColumnXYZ(trace, xa, ya) {
+     if(hasColumnText) trace.text = text;
+ };
+ 
+-},{"../../lib":567}],709:[function(require,module,exports){
++},{"../../lib":561}],703:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121145,7 +122928,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: '', cLetter: 'z'});
+ };
+ 
+-},{"../../components/colorscale/defaults":493,"../../lib":567,"./attributes":705,"./has_columns":710,"./xyz_defaults":716}],710:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487,"../../lib":561,"./attributes":699,"./has_columns":704,"./xyz_defaults":710}],704:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121161,7 +122944,7 @@ module.exports = function(trace) {
+     return !Array.isArray(trace.z[0]);
+ };
+ 
+-},{}],711:[function(require,module,exports){
++},{}],705:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121279,7 +123062,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode, contour)
+     })];
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/constants":596,"../../plots/cartesian/graph_interact":598}],712:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/constants":590,"../../plots/cartesian/graph_interact":592}],706:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121311,7 +123094,7 @@ Heatmap.meta = {
+ 
+ module.exports = Heatmap;
+ 
+-},{"../../plots/cartesian":599,"./attributes":705,"./calc":706,"./colorbar":707,"./defaults":709,"./hover":711,"./plot":714,"./style":715}],713:[function(require,module,exports){
++},{"../../plots/cartesian":593,"./attributes":699,"./calc":700,"./colorbar":701,"./defaults":703,"./hover":705,"./plot":708,"./style":709}],707:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121333,7 +123116,7 @@ module.exports = function maxRowLength(z) {
+     return len;
+ };
+ 
+-},{}],714:[function(require,module,exports){
++},{}],708:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121732,7 +123515,7 @@ function plotOne(gd, plotinfo, cd) {
+     image3.exit().remove();
+ }
+ 
+-},{"../../components/colorscale/get_scale":495,"../../constants/xmlns_namespaces":555,"../../lib":567,"../../plots/plots":647,"./max_row_length":713,"d3":119,"tinycolor2":454}],715:[function(require,module,exports){
++},{"../../components/colorscale/get_scale":489,"../../constants/xmlns_namespaces":549,"../../lib":561,"../../plots/plots":641,"./max_row_length":707,"d3":90,"tinycolor2":442}],709:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121753,7 +123536,7 @@ module.exports = function style(gd) {
+         });
+ };
+ 
+-},{"d3":119}],716:[function(require,module,exports){
++},{"d3":90}],710:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121842,7 +123625,7 @@ function isValidZ(z) {
+     return (allRowsAreArrays && oneRowIsFilled && hasOneNumber);
+ }
+ 
+-},{"./has_columns":710,"fast-isnumeric":123}],717:[function(require,module,exports){
++},{"./has_columns":704,"fast-isnumeric":98}],711:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121950,7 +123733,7 @@ function makeBinsAttr(axLetter) {
+     };
+ }
+ 
+-},{"../bar/attributes":669}],718:[function(require,module,exports){
++},{"../bar/attributes":663}],712:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -121976,7 +123759,7 @@ module.exports = function doAvg(size, counts) {
+     return total;
+ };
+ 
+-},{}],719:[function(require,module,exports){
++},{}],713:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122006,7 +123789,7 @@ module.exports = function handleBinDefaults(traceIn, traceOut, coerce, binDirect
+     return traceOut;
+ };
+ 
+-},{}],720:[function(require,module,exports){
++},{}],714:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122080,7 +123863,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"fast-isnumeric":123}],721:[function(require,module,exports){
++},{"fast-isnumeric":98}],715:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122210,7 +123993,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"./average":718,"./bin_functions":720,"./norm_functions":724,"fast-isnumeric":123}],722:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"./average":712,"./bin_functions":714,"./norm_functions":718,"fast-isnumeric":98}],716:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122262,7 +124045,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     errorBarsSupplyDefaults(traceIn, traceOut, Color.defaultLine, {axis: 'x', inherit: 'y'});
+ };
+ 
+-},{"../../components/color":483,"../../components/errorbars/defaults":511,"../../lib":567,"../bar/style_defaults":679,"./attributes":717,"./bin_defaults":719}],723:[function(require,module,exports){
++},{"../../components/color":477,"../../components/errorbars/defaults":505,"../../lib":561,"../bar/style_defaults":673,"./attributes":711,"./bin_defaults":713}],717:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122311,7 +124094,7 @@ Histogram.meta = {
+ 
+ module.exports = Histogram;
+ 
+-},{"../../plots/cartesian":599,"../bar/hover":672,"../bar/layout_attributes":674,"../bar/layout_defaults":675,"../bar/plot":676,"../bar/set_positions":677,"../bar/style":678,"../scatter/colorbar":752,"./attributes":717,"./calc":721,"./defaults":722}],724:[function(require,module,exports){
++},{"../../plots/cartesian":593,"../bar/hover":666,"../bar/layout_attributes":668,"../bar/layout_defaults":669,"../bar/plot":670,"../bar/set_positions":671,"../bar/style":672,"../scatter/colorbar":746,"./attributes":711,"./calc":715,"./defaults":716}],718:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122346,7 +124129,7 @@ module.exports = {
+     }
+ };
+ 
+-},{}],725:[function(require,module,exports){
++},{}],719:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122398,7 +124181,7 @@ module.exports = extendFlat({},
+     {autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false})}
+ );
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../heatmap/attributes":705,"../histogram/attributes":717}],726:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../heatmap/attributes":699,"../histogram/attributes":711}],720:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122564,7 +124347,7 @@ module.exports = function calc(gd, trace) {
+     };
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"../histogram/average":718,"../histogram/bin_functions":720,"../histogram/norm_functions":724}],727:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"../histogram/average":712,"../histogram/bin_functions":714,"../histogram/norm_functions":718}],721:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122597,7 +124380,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, layout) {
+     );
+ };
+ 
+-},{"../../components/colorscale/defaults":493,"../../lib":567,"./attributes":725,"./sample_defaults":729}],728:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487,"../../lib":561,"./attributes":719,"./sample_defaults":723}],722:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122630,7 +124413,7 @@ Histogram2D.meta = {
+ 
+ module.exports = Histogram2D;
+ 
+-},{"../../plots/cartesian":599,"../heatmap/calc":706,"../heatmap/colorbar":707,"../heatmap/hover":711,"../heatmap/plot":714,"../heatmap/style":715,"./attributes":725,"./defaults":727}],729:[function(require,module,exports){
++},{"../../plots/cartesian":593,"../heatmap/calc":700,"../heatmap/colorbar":701,"../heatmap/hover":705,"../heatmap/plot":708,"../heatmap/style":709,"./attributes":719,"./defaults":721}],723:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122666,7 +124449,7 @@ module.exports = function handleSampleDefaults(traceIn, traceOut, coerce) {
+     handleBinDefaults(traceIn, traceOut, coerce, binDirections);
+ };
+ 
+-},{"../histogram/bin_defaults":719}],730:[function(require,module,exports){
++},{"../histogram/bin_defaults":713}],724:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122710,7 +124493,7 @@ module.exports = extendFlat({}, {
+     colorscaleAttrs
+ );
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../contour/attributes":695,"../histogram2d/attributes":725}],731:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../contour/attributes":689,"../histogram2d/attributes":719}],725:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122746,7 +124529,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     handleStyleDefaults(traceIn, traceOut, coerce, layout);
+ };
+ 
+-},{"../../lib":567,"../contour/style_defaults":704,"../histogram2d/sample_defaults":729,"./attributes":730}],732:[function(require,module,exports){
++},{"../../lib":561,"../contour/style_defaults":698,"../histogram2d/sample_defaults":723,"./attributes":724}],726:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122779,7 +124562,7 @@ Histogram2dContour.meta = {
+ 
+ module.exports = Histogram2dContour;
+ 
+-},{"../../plots/cartesian":599,"../contour/calc":696,"../contour/colorbar":697,"../contour/hover":699,"../contour/plot":702,"../contour/style":703,"./attributes":730,"./defaults":731}],733:[function(require,module,exports){
++},{"../../plots/cartesian":593,"../contour/calc":690,"../contour/colorbar":691,"../contour/hover":693,"../contour/plot":696,"../contour/style":697,"./attributes":724,"./defaults":725}],727:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -122913,7 +124696,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/attributes":489,"../../lib/extend":562,"../surface/attributes":801}],734:[function(require,module,exports){
++},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../surface/attributes":795}],728:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123075,7 +124858,7 @@ function createMesh3DTrace(scene, data) {
+ 
+ module.exports = createMesh3DTrace;
+ 
+-},{"../../lib/str2rgbarray":579,"alpha-shape":41,"convex-hull":108,"delaunay-triangulate":120,"gl-mesh3d":156,"tinycolor2":454}],735:[function(require,module,exports){
++},{"../../lib/str2rgbarray":573,"alpha-shape":27,"convex-hull":79,"delaunay-triangulate":91,"gl-mesh3d":166,"tinycolor2":442}],729:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123172,7 +124955,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     }
+ };
+ 
+-},{"../../components/colorbar/defaults":485,"../../lib":567,"./attributes":733}],736:[function(require,module,exports){
++},{"../../components/colorbar/defaults":479,"../../lib":561,"./attributes":727}],730:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123201,7 +124984,7 @@ Mesh3D.meta = {
+ 
+ module.exports = Mesh3D;
+ 
+-},{"../../plots/gl3d":627,"../heatmap/colorbar":707,"./attributes":733,"./convert":734,"./defaults":735}],737:[function(require,module,exports){
++},{"../../plots/gl3d":621,"../heatmap/colorbar":701,"./attributes":727,"./convert":728,"./defaults":729}],731:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123421,7 +125204,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/color/attributes":482,"../../lib/extend":562,"../../plots/attributes":589,"../../plots/font_attributes":609}],738:[function(require,module,exports){
++},{"../../components/color/attributes":476,"../../lib/extend":556,"../../plots/attributes":583,"../../plots/font_attributes":603}],732:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123468,7 +125251,7 @@ function getCdModule(calcdata, _module) {
+     return cdModule;
+ }
+ 
+-},{"../../plots/plots":647}],739:[function(require,module,exports){
++},{"../../plots/plots":641}],733:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123620,7 +125403,7 @@ function nextDefaultColor(index) {
+     return pieDefaultColors[index % pieDefaultColors.length];
+ }
+ 
+-},{"../../components/color":483,"./helpers":741,"fast-isnumeric":123,"tinycolor2":454}],740:[function(require,module,exports){
++},{"../../components/color":477,"./helpers":735,"fast-isnumeric":98,"tinycolor2":442}],734:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123704,7 +125487,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     coerce('pull');
+ };
+ 
+-},{"../../lib":567,"./attributes":737}],741:[function(require,module,exports){
++},{"../../lib":561,"./attributes":731}],735:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123733,7 +125516,7 @@ exports.formatPieValue = function formatPieValue(v, separators) {
+     return Lib.numSeparate(vRounded, separators);
+ };
+ 
+-},{"../../lib":567}],742:[function(require,module,exports){
++},{"../../lib":561}],736:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123765,7 +125548,7 @@ Pie.meta = {
+ 
+ module.exports = Pie;
+ 
+-},{"./attributes":737,"./base_plot":738,"./calc":739,"./defaults":740,"./layout_attributes":743,"./layout_defaults":744,"./plot":745,"./style":746,"./style_one":747}],743:[function(require,module,exports){
++},{"./attributes":731,"./base_plot":732,"./calc":733,"./defaults":734,"./layout_attributes":737,"./layout_defaults":738,"./plot":739,"./style":740,"./style_one":741}],737:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123785,7 +125568,7 @@ module.exports = {
+     hiddenlabels: {valType: 'data_array'}
+ };
+ 
+-},{}],744:[function(require,module,exports){
++},{}],738:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -123807,7 +125590,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut) {
+     coerce('hiddenlabels');
+ };
+ 
+-},{"../../lib":567,"./layout_attributes":743}],745:[function(require,module,exports){
++},{"../../lib":561,"./layout_attributes":737}],739:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124502,7 +126285,7 @@ function maxExtent(tilt, tiltAxisFraction, depth) {
+         2 * Math.sqrt(1 - sinTilt * sinTilt * tiltAxisFraction * tiltAxisFraction));
+ }
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"../../lib/svg_text_utils":580,"../../plots/cartesian/graph_interact":598,"./helpers":741,"d3":119}],746:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"../../lib/svg_text_utils":574,"../../plots/cartesian/graph_interact":592,"./helpers":735,"d3":90}],740:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124531,7 +126314,7 @@ module.exports = function style(gd) {
+     });
+ };
+ 
+-},{"./style_one":747,"d3":119}],747:[function(require,module,exports){
++},{"./style_one":741,"d3":90}],741:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124558,7 +126341,7 @@ module.exports = function styleOne(s, pt, trace) {
+     .call(Color.stroke, lineColor);
+ };
+ 
+-},{"../../components/color":483}],748:[function(require,module,exports){
++},{"../../components/color":477}],742:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124596,7 +126379,7 @@ module.exports = function arraysToCalcdata(cd) {
+     }
+ };
+ 
+-},{"../../lib":567}],749:[function(require,module,exports){
++},{"../../lib":561}],743:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124846,7 +126629,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../components/drawing":506,"../../lib/extend":562,"./constants":754}],750:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../components/drawing":500,"../../lib/extend":556,"./constants":748}],744:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -124973,7 +126756,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"./colorscale_calc":753,"./subtypes":768,"fast-isnumeric":123}],751:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"./colorscale_calc":747,"./subtypes":762,"fast-isnumeric":98}],745:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125014,7 +126797,7 @@ module.exports = function cleanData(fullData) {
+     }
+ };
+ 
+-},{}],752:[function(require,module,exports){
++},{}],746:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125067,7 +126850,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(marker.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":486,"../../components/colorscale/get_scale":495,"../../lib":567,"../../plots/plots":647,"d3":119,"fast-isnumeric":123}],753:[function(require,module,exports){
++},{"../../components/colorbar/draw":480,"../../components/colorscale/get_scale":489,"../../lib":561,"../../plots/plots":641,"d3":90,"fast-isnumeric":98}],747:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125100,7 +126883,7 @@ module.exports = function calcMarkerColorscale(trace) {
+     }
+ };
+ 
+-},{"../../components/colorscale/calc":490,"../../components/colorscale/has_colorscale":496,"./subtypes":768}],754:[function(require,module,exports){
++},{"../../components/colorscale/calc":484,"../../components/colorscale/has_colorscale":490,"./subtypes":762}],748:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125116,7 +126899,7 @@ module.exports = {
+     PTS_LINESONLY: 20
+ };
+ 
+-},{}],755:[function(require,module,exports){
++},{}],749:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125194,7 +126977,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'y'});
+ };
+ 
+-},{"../../components/errorbars/defaults":511,"../../lib":567,"./attributes":749,"./constants":754,"./fillcolor_defaults":756,"./line_defaults":760,"./line_shape_defaults":762,"./marker_defaults":764,"./subtypes":768,"./text_defaults":769,"./xy_defaults":770}],756:[function(require,module,exports){
++},{"../../components/errorbars/defaults":505,"../../lib":561,"./attributes":743,"./constants":748,"./fillcolor_defaults":750,"./line_defaults":754,"./line_shape_defaults":756,"./marker_defaults":758,"./subtypes":762,"./text_defaults":763,"./xy_defaults":764}],750:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125233,7 +127016,7 @@ module.exports = function fillColorDefaults(traceIn, traceOut, defaultColor, coe
+     ));
+ };
+ 
+-},{"../../components/color":483}],757:[function(require,module,exports){
++},{"../../components/color":477}],751:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125286,7 +127069,7 @@ module.exports = function getTraceColor(trace, di) {
+     }
+ };
+ 
+-},{"../../components/color":483,"./subtypes":768}],758:[function(require,module,exports){
++},{"../../components/color":477,"./subtypes":762}],752:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125455,7 +127238,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     }
+ };
+ 
+-},{"../../components/color":483,"../../components/errorbars":512,"../../lib":567,"../../plots/cartesian/constants":596,"../../plots/cartesian/graph_interact":598,"./get_trace_color":757}],759:[function(require,module,exports){
++},{"../../components/color":477,"../../components/errorbars":506,"../../lib":561,"../../plots/cartesian/constants":590,"../../plots/cartesian/graph_interact":592,"./get_trace_color":751}],753:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125498,7 +127281,7 @@ Scatter.meta = {
+ 
+ module.exports = Scatter;
+ 
+-},{"../../plots/cartesian":599,"./arrays_to_calcdata":748,"./attributes":749,"./calc":750,"./clean_data":751,"./colorbar":752,"./defaults":755,"./hover":758,"./plot":765,"./select":766,"./style":767,"./subtypes":768}],760:[function(require,module,exports){
++},{"../../plots/cartesian":593,"./arrays_to_calcdata":742,"./attributes":743,"./calc":744,"./clean_data":745,"./colorbar":746,"./defaults":749,"./hover":752,"./plot":759,"./select":760,"./style":761,"./subtypes":762}],754:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125531,7 +127314,7 @@ module.exports = function lineDefaults(traceIn, traceOut, defaultColor, layout,
+     coerce('line.dash');
+ };
+ 
+-},{"../../components/colorscale/defaults":493,"../../components/colorscale/has_colorscale":496}],761:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487,"../../components/colorscale/has_colorscale":490}],755:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125700,7 +127483,7 @@ module.exports = function linePoints(d, opts) {
+     return segments;
+ };
+ 
+-},{"../../plots/cartesian/axes":591}],762:[function(require,module,exports){
++},{"../../plots/cartesian/axes":585}],756:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125719,7 +127502,7 @@ module.exports = function handleLineShapeDefaults(traceIn, traceOut, coerce) {
+     if(shape === 'spline') coerce('line.smoothing');
+ };
+ 
+-},{}],763:[function(require,module,exports){
++},{}],757:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125761,7 +127544,7 @@ module.exports = function makeBubbleSizeFn(trace) {
+     };
+ };
+ 
+-},{"fast-isnumeric":123}],764:[function(require,module,exports){
++},{"fast-isnumeric":98}],758:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -125821,7 +127604,7 @@ module.exports = function markerDefaults(traceIn, traceOut, defaultColor, layout
+     }
+ };
+ 
+-},{"../../components/color":483,"../../components/colorscale/defaults":493,"../../components/colorscale/has_colorscale":496,"./subtypes":768}],765:[function(require,module,exports){
++},{"../../components/color":477,"../../components/colorscale/defaults":487,"../../components/colorscale/has_colorscale":490,"./subtypes":762}],759:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126114,7 +127897,7 @@ function selectMarkers(gd, plotinfo, cdscatter) {
+     });
+ }
+ 
+-},{"../../components/drawing":506,"../../components/errorbars":512,"../../lib":567,"../../lib/polygon":573,"./arrays_to_calcdata":748,"./line_points":761,"./subtypes":768,"d3":119}],766:[function(require,module,exports){
++},{"../../components/drawing":500,"../../components/errorbars":506,"../../lib":561,"../../lib/polygon":567,"./arrays_to_calcdata":742,"./line_points":755,"./subtypes":762,"d3":90}],760:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126185,7 +127968,7 @@ module.exports = function selectPoints(searchInfo, polygon) {
+     return selection;
+ };
+ 
+-},{"./subtypes":768}],767:[function(require,module,exports){
++},{"./subtypes":762}],761:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126227,7 +128010,7 @@ module.exports = function style(gd) {
+     s.call(ErrorBars.style);
+ };
+ 
+-},{"../../components/drawing":506,"../../components/errorbars":512,"d3":119}],768:[function(require,module,exports){
++},{"../../components/drawing":500,"../../components/errorbars":506,"d3":90}],762:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126263,7 +128046,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib":567}],769:[function(require,module,exports){
++},{"../../lib":561}],763:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126284,7 +128067,7 @@ module.exports = function(traceIn, traceOut, layout, coerce) {
+     Lib.coerceFont(coerce, 'textfont', layout.font);
+ };
+ 
+-},{"../../lib":567}],770:[function(require,module,exports){
++},{"../../lib":561}],764:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126329,7 +128112,7 @@ module.exports = function handleXYDefaults(traceIn, traceOut, coerce) {
+     return len;
+ };
+ 
+-},{}],771:[function(require,module,exports){
++},{}],765:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126460,7 +128243,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../constants/gl_markers":554,"../../lib/extend":562,"../scatter/attributes":749}],772:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../constants/gl_markers":548,"../../lib/extend":556,"../scatter/attributes":743}],766:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126489,7 +128272,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../scatter/arrays_to_calcdata":748,"../scatter/colorscale_calc":753}],773:[function(require,module,exports){
++},{"../scatter/arrays_to_calcdata":742,"../scatter/colorscale_calc":747}],767:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -126560,7 +128343,7 @@ function calculateErrors(data, scaleFactor) {
+ 
+ module.exports = calculateErrors;
+ 
+-},{"../../components/errorbars/compute_error":510}],774:[function(require,module,exports){
++},{"../../components/errorbars/compute_error":504}],768:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127019,7 +128802,7 @@ function createLineWithMarkers(scene, data) {
+ 
+ module.exports = createLineWithMarkers;
+ 
+-},{"../../constants/gl3d_dashes":553,"../../constants/gl_markers":554,"../../lib":567,"../../lib/gl_format_color":565,"../../lib/str2rgbarray":579,"../scatter/make_bubble_size_func":763,"./calc_errors":773,"delaunay-triangulate":120,"gl-error3d":127,"gl-line3d":133,"gl-mesh3d":156,"gl-scatter3d":199}],775:[function(require,module,exports){
++},{"../../constants/gl3d_dashes":547,"../../constants/gl_markers":548,"../../lib":561,"../../lib/gl_format_color":559,"../../lib/str2rgbarray":573,"../scatter/make_bubble_size_func":757,"./calc_errors":767,"delaunay-triangulate":91,"gl-error3d":126,"gl-line3d":133,"gl-mesh3d":166,"gl-scatter3d":186}],769:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127104,7 +128887,7 @@ function handleXYZDefaults(traceIn, traceOut, coerce) {
+     return len;
+ }
+ 
+-},{"../../components/errorbars/defaults":511,"../../lib":567,"../scatter/line_defaults":760,"../scatter/marker_defaults":764,"../scatter/subtypes":768,"../scatter/text_defaults":769,"./attributes":771}],776:[function(require,module,exports){
++},{"../../components/errorbars/defaults":505,"../../lib":561,"../scatter/line_defaults":754,"../scatter/marker_defaults":758,"../scatter/subtypes":762,"../scatter/text_defaults":763,"./attributes":765}],770:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127135,7 +128918,7 @@ Scatter3D.meta = {
+ 
+ module.exports = Scatter3D;
+ 
+-},{"../../constants/gl_markers":554,"../../plots/gl3d":627,"../scatter/colorbar":752,"./attributes":771,"./calc":772,"./convert":774,"./defaults":775}],777:[function(require,module,exports){
++},{"../../constants/gl_markers":548,"../../plots/gl3d":621,"../scatter/colorbar":746,"./attributes":765,"./calc":766,"./convert":768,"./defaults":769}],771:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127210,7 +128993,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../lib/extend":562,"../../plots/attributes":589,"../scatter/attributes":749}],778:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../lib/extend":556,"../../plots/attributes":583,"../scatter/attributes":743}],772:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127233,7 +129016,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../scatter/colorscale_calc":753}],779:[function(require,module,exports){
++},{"../scatter/colorscale_calc":747}],773:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127306,7 +129089,7 @@ function handleLonLatLocDefaults(traceIn, traceOut, coerce) {
+     return len;
+ }
+ 
+-},{"../../lib":567,"../scatter/line_defaults":760,"../scatter/marker_defaults":764,"../scatter/subtypes":768,"../scatter/text_defaults":769,"./attributes":777}],780:[function(require,module,exports){
++},{"../../lib":561,"../scatter/line_defaults":754,"../scatter/marker_defaults":758,"../scatter/subtypes":762,"../scatter/text_defaults":763,"./attributes":771}],774:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127337,7 +129120,7 @@ ScatterGeo.meta = {
+ 
+ module.exports = ScatterGeo;
+ 
+-},{"../../plots/geo":612,"../scatter/colorbar":752,"./attributes":777,"./calc":778,"./defaults":779,"./plot":781}],781:[function(require,module,exports){
++},{"../../plots/geo":606,"../scatter/colorbar":746,"./attributes":771,"./calc":772,"./defaults":773,"./plot":775}],775:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127637,7 +129420,7 @@ function makeEventDataFunc(trace) {
+     };
+ }
+ 
+-},{"../../components/color":483,"../../components/drawing":506,"../../lib/array_to_calc_item":558,"../../lib/geo_location_utils":564,"../../lib/topojson_utils":581,"../../plots/cartesian/axes":591,"../../plots/cartesian/graph_interact":598,"../scatter/subtypes":768,"./attributes":777,"d3":119}],782:[function(require,module,exports){
++},{"../../components/color":477,"../../components/drawing":500,"../../lib/array_to_calc_item":552,"../../lib/geo_location_utils":558,"../../lib/topojson_utils":575,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592,"../scatter/subtypes":762,"./attributes":771,"d3":90}],776:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -127719,7 +129502,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../constants/gl2d_dashes":552,"../../constants/gl_markers":554,"../../lib/extend":562,"../scatter/attributes":749}],783:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../constants/gl2d_dashes":546,"../../constants/gl_markers":548,"../../lib/extend":556,"../scatter/attributes":743}],777:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128311,7 +130094,7 @@ function createLineWithMarkers(scene, data) {
+ 
+ module.exports = createLineWithMarkers;
+ 
+-},{"../../components/errorbars":512,"../../constants/gl2d_dashes":552,"../../constants/gl_markers":554,"../../lib":567,"../../lib/gl_format_color":565,"../../lib/str2rgbarray":579,"../../plots/cartesian/axes":591,"../scatter/get_trace_color":757,"../scatter/make_bubble_size_func":763,"../scatter/subtypes":768,"fast-isnumeric":123,"gl-error2d":125,"gl-line2d":131,"gl-scatter2d":196,"gl-scatter2d-fancy":191}],784:[function(require,module,exports){
++},{"../../components/errorbars":506,"../../constants/gl2d_dashes":546,"../../constants/gl_markers":548,"../../lib":561,"../../lib/gl_format_color":559,"../../lib/str2rgbarray":573,"../../plots/cartesian/axes":585,"../scatter/get_trace_color":751,"../scatter/make_bubble_size_func":757,"../scatter/subtypes":762,"fast-isnumeric":98,"gl-error2d":124,"gl-line2d":131,"gl-scatter2d":183,"gl-scatter2d-fancy":178}],778:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128368,7 +130151,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'y'});
+ };
+ 
+-},{"../../components/errorbars/defaults":511,"../../lib":567,"../scatter/constants":754,"../scatter/fillcolor_defaults":756,"../scatter/line_defaults":760,"../scatter/marker_defaults":764,"../scatter/subtypes":768,"../scatter/xy_defaults":770,"./attributes":782}],785:[function(require,module,exports){
++},{"../../components/errorbars/defaults":505,"../../lib":561,"../scatter/constants":748,"../scatter/fillcolor_defaults":750,"../scatter/line_defaults":754,"../scatter/marker_defaults":758,"../scatter/subtypes":762,"../scatter/xy_defaults":764,"./attributes":776}],779:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128399,7 +130182,7 @@ ScatterGl.meta = {
+ 
+ module.exports = ScatterGl;
+ 
+-},{"../../plots/gl2d":624,"../scatter/colorbar":752,"../scatter3d/calc":772,"./attributes":782,"./convert":783,"./defaults":784}],786:[function(require,module,exports){
++},{"../../plots/gl2d":618,"../scatter/colorbar":746,"../scatter3d/calc":766,"./attributes":776,"./convert":777,"./defaults":778}],780:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128498,7 +130281,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../lib/extend":562,"../../plots/attributes":589,"../../plots/mapbox/layout_attributes":644,"../scatter/attributes":749,"../scattergeo/attributes":777}],787:[function(require,module,exports){
++},{"../../lib/extend":556,"../../plots/attributes":583,"../../plots/mapbox/layout_attributes":638,"../scatter/attributes":743,"../scattergeo/attributes":771}],781:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128595,7 +130378,7 @@ module.exports = function calc(gd, trace) {
+     return calcTrace;
+ };
+ 
+-},{"../../components/colorscale/has_colorscale":496,"../../components/colorscale/make_scale_function":500,"../../lib":567,"../scatter/colorscale_calc":753,"../scatter/make_bubble_size_func":763,"../scatter/subtypes":768,"fast-isnumeric":123}],788:[function(require,module,exports){
++},{"../../components/colorscale/has_colorscale":490,"../../components/colorscale/make_scale_function":494,"../../lib":561,"../scatter/colorscale_calc":747,"../scatter/make_bubble_size_func":757,"../scatter/subtypes":762,"fast-isnumeric":98}],782:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -128946,7 +130729,7 @@ function getFillFunc(attr) {
+ 
+ function blankFillFunc() { return ''; }
+ 
+-},{"../../lib":567,"../../plots/mapbox/convert_text_opts":641,"../scatter/subtypes":768}],789:[function(require,module,exports){
++},{"../../lib":561,"../../plots/mapbox/convert_text_opts":635,"../scatter/subtypes":762}],783:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129034,7 +130817,7 @@ function handleLonLatDefaults(traceIn, traceOut, coerce) {
+     return len;
+ }
+ 
+-},{"../../lib":567,"../scatter/attributes":749,"../scatter/fillcolor_defaults":756,"../scatter/line_defaults":760,"../scatter/marker_defaults":764,"../scatter/subtypes":768,"../scatter/text_defaults":769,"./attributes":786}],790:[function(require,module,exports){
++},{"../../lib":561,"../scatter/attributes":743,"../scatter/fillcolor_defaults":750,"../scatter/line_defaults":754,"../scatter/marker_defaults":758,"../scatter/subtypes":762,"../scatter/text_defaults":763,"./attributes":780}],784:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129127,7 +130910,7 @@ function getExtraText(trace, di) {
+     return text.join('<br>');
+ }
+ 
+-},{"../../plots/cartesian/graph_interact":598,"../scatter/get_trace_color":757}],791:[function(require,module,exports){
++},{"../../plots/cartesian/graph_interact":592,"../scatter/get_trace_color":751}],785:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129159,7 +130942,7 @@ ScatterMapbox.meta = {
+ 
+ module.exports = ScatterMapbox;
+ 
+-},{"../../plots/mapbox":642,"../scatter/colorbar":752,"./attributes":786,"./calc":787,"./defaults":789,"./hover":790,"./plot":792}],792:[function(require,module,exports){
++},{"../../plots/mapbox":636,"../scatter/colorbar":746,"./attributes":780,"./calc":781,"./defaults":783,"./hover":784,"./plot":786}],786:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129291,7 +131074,7 @@ module.exports = function createScatterMapbox(mapbox, calcTrace) {
+     return scatterMapbox;
+ };
+ 
+-},{"./convert":788}],793:[function(require,module,exports){
++},{"./convert":782}],787:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129377,7 +131160,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/colorscale/color_attributes":491,"../../lib/extend":562,"../../plots/attributes":589,"../scatter/attributes":749}],794:[function(require,module,exports){
++},{"../../components/colorscale/color_attributes":485,"../../lib/extend":556,"../../plots/attributes":583,"../scatter/attributes":743}],788:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129476,7 +131259,7 @@ module.exports = function calc(gd, trace) {
+     return cd;
+ };
+ 
+-},{"../../lib":567,"../../plots/cartesian/axes":591,"../scatter/colorscale_calc":753,"../scatter/subtypes":768,"fast-isnumeric":123}],795:[function(require,module,exports){
++},{"../../lib":561,"../../plots/cartesian/axes":585,"../scatter/colorscale_calc":747,"../scatter/subtypes":762,"fast-isnumeric":98}],789:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129581,7 +131364,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
+     coerce('hoveron', dfltHoverOn.join('+') || 'points');
+ };
+ 
+-},{"../../lib":567,"../scatter/constants":754,"../scatter/fillcolor_defaults":756,"../scatter/line_defaults":760,"../scatter/line_shape_defaults":762,"../scatter/marker_defaults":764,"../scatter/subtypes":768,"../scatter/text_defaults":769,"./attributes":793}],796:[function(require,module,exports){
++},{"../../lib":561,"../scatter/constants":748,"../scatter/fillcolor_defaults":750,"../scatter/line_defaults":754,"../scatter/line_shape_defaults":756,"../scatter/marker_defaults":758,"../scatter/subtypes":762,"../scatter/text_defaults":763,"./attributes":787}],790:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129652,7 +131435,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
+     return scatterPointData;
+ };
+ 
+-},{"../../plots/cartesian/axes":591,"../scatter/hover":758}],797:[function(require,module,exports){
++},{"../../plots/cartesian/axes":585,"../scatter/hover":752}],791:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129685,7 +131468,7 @@ ScatterTernary.meta = {
+ 
+ module.exports = ScatterTernary;
+ 
+-},{"../../plots/ternary":654,"../scatter/colorbar":752,"./attributes":793,"./calc":794,"./defaults":795,"./hover":796,"./plot":798,"./select":799,"./style":800}],798:[function(require,module,exports){
++},{"../../plots/ternary":648,"../scatter/colorbar":746,"./attributes":787,"./calc":788,"./defaults":789,"./hover":790,"./plot":792,"./select":793,"./style":794}],792:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129731,7 +131514,7 @@ module.exports = function plot(ternary, data) {
+     scatterPlot(ternary.graphDiv, plotinfo, calcdata);
+ };
+ 
+-},{"../scatter/plot":765}],799:[function(require,module,exports){
++},{"../scatter/plot":759}],793:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129766,7 +131549,7 @@ module.exports = function selectPoints(searchInfo, polygon) {
+     return selection;
+ };
+ 
+-},{"../scatter/select":766}],800:[function(require,module,exports){
++},{"../scatter/select":760}],794:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -129795,7 +131578,7 @@ module.exports = function style(gd) {
+     scatterStyle(gd);
+ };
+ 
+-},{"../scatter/style":767}],801:[function(require,module,exports){
++},{"../scatter/style":761}],795:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130015,7 +131798,7 @@ module.exports = {
+     }
+ };
+ 
+-},{"../../components/color":483,"../../components/colorscale/attributes":489,"../../lib/extend":562}],802:[function(require,module,exports){
++},{"../../components/color":477,"../../components/colorscale/attributes":483,"../../lib/extend":556}],796:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130039,7 +131822,7 @@ module.exports = function calc(gd, trace) {
+     }
+ };
+ 
+-},{"../../components/colorscale/calc":490}],803:[function(require,module,exports){
++},{"../../components/colorscale/calc":484}],797:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130086,7 +131869,7 @@ module.exports = function colorbar(gd, cd) {
+         .options(trace.colorbar)();
+ };
+ 
+-},{"../../components/colorbar/draw":486,"../../components/colorscale/get_scale":495,"../../lib":567,"../../plots/plots":647,"d3":119,"fast-isnumeric":123}],804:[function(require,module,exports){
++},{"../../components/colorbar/draw":480,"../../components/colorscale/get_scale":489,"../../lib":561,"../../plots/plots":641,"d3":90,"fast-isnumeric":98}],798:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130449,7 +132232,7 @@ function createSurfaceTrace(scene, data) {
+ 
+ module.exports = createSurfaceTrace;
+ 
+-},{"../../lib/str2rgbarray":579,"gl-surface3d":227,"ndarray":433,"ndarray-fill":426,"ndarray-homography":431,"ndarray-ops":432,"tinycolor2":454}],805:[function(require,module,exports){
++},{"../../lib/str2rgbarray":573,"gl-surface3d":201,"ndarray":385,"ndarray-fill":375,"ndarray-homography":377,"ndarray-ops":379,"tinycolor2":442}],799:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130566,7 +132349,7 @@ function mapLegacy(traceIn, oldAttr, newAttr) {
+     }
+ }
+ 
+-},{"../../components/colorscale/defaults":493,"../../lib":567,"./attributes":801}],806:[function(require,module,exports){
++},{"../../components/colorscale/defaults":487,"../../lib":561,"./attributes":795}],800:[function(require,module,exports){
+ /**
+ * Copyright 2012-2016, Plotly, Inc.
+ * All rights reserved.
+@@ -130596,5 +132379,5 @@ Surface.meta = {
+ 
+ module.exports = Surface;
+ 
+-},{"../../plots/gl3d":627,"./attributes":801,"./calc":802,"./colorbar":803,"./convert":804,"./defaults":805}]},{},[12])(12)
++},{"../../plots/gl3d":621,"./attributes":795,"./calc":796,"./colorbar":797,"./convert":798,"./defaults":799}]},{},[12])(12)
+ });
+\ No newline at end of file
+diff --git a/dist/plotly.min.js b/dist/plotly.min.js
+index c04186f..45265c7 100644
+--- a/dist/plotly.min.js
++++ b/dist/plotly.min.js
+@@ -4,56 +4,57 @@
+ * All rights reserved.
+ * Licensed under the MIT license
+ */
+-!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var e;e="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,e.Plotly=t()}}(function(){var t;return function e(t,r,n){function i(a,s){if(!r[a]){if(!t[a]){var l="function"==typeof require&&require;if(!s&&l)return l(a,!0);if(o)return o(a,!0);var u=new Error("Cannot find module '"+a+"'");throw u.code="MODULE_NOT_FOUND",u}var c=r[a]={exports:{}};t[a][0].call(c.exports,function(e){var r=t[a][1][e];return i(r?r:e)},c,c.exports,e,t,r,n)}return r[a].exports}for(var o="function"==typeof require&&require,a=0;a<n.length;a++)i(n[a]);return i}({1:[function(t,e,r){"use strict";var n=t("../src/plotly"),i={"X,X div":"font-family:'Open Sans', verdana, arial, sans-serif;margin:0;padding:0;","X input,X button":"font-family:'Open Sans', verdana, arial, sans-serif;","X input:focus,X 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n.identity(t),n.fromRotationTranslation(t,s,e),t[3]=a[0],t[7]=a[1],t[11]=a[2],t[15]=a[3],n.identity(i),0!==o[2]&&(i[9]=o[2],n.multiply(t,t,i)),0!==o[1]&&(i[9]=0,i[8]=o[1],n.multiply(t,t,i)),0!==o[0]&&(i[8]=0,i[4]=o[0],n.multiply(t,t,i)),n.scale(t,t,r),t}},{"gl-mat4/create":138,"gl-mat4/fromRotationTranslation":141,"gl-mat4/identity":142,"gl-mat4/multiply":145,"gl-mat4/scale":151,"gl-mat4/translate":152}],35:[function(t,e,r){e.exports=t("gl-quat/slerp")},{"gl-quat/slerp":36}],36:[function(t,e,r){function n(t,e,r,n){var i,o,a,s,l,u=e[0],c=e[1],h=e[2],f=e[3],d=r[0],p=r[1],v=r[2],m=r[3];return o=u*d+c*p+h*v+f*m,0>o&&(o=-o,d=-d,p=-p,v=-v,m=-m),1-o>1e-6?(i=Math.acos(o),a=Math.sin(i),s=Math.sin((1-n)*i)/a,l=Math.sin(n*i)/a):(s=1-n,l=n),t[0]=s*u+l*d,t[1]=s*c+l*p,t[2]=s*h+l*v,t[3]=s*f+l*m,t}e.exports=n},{}],37:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s,l,u){var c=e+o+u;if(h>0){var h=Math.sqrt(c+1);t[0]=.5*(a-l)/h,t[1]=.5*(s-n)/h,t[2]=.5*(r-o)/h,t[3]=.5*h}else{var f=Math.max(e,o,u),h=Math.sqrt(2*f-c+1);e>=f?(t[0]=.5*h,t[1]=.5*(i+r)/h,t[2]=.5*(s+n)/h,t[3]=.5*(a-l)/h):o>=f?(t[0]=.5*(r+i)/h,t[1]=.5*h,t[2]=.5*(l+a)/h,t[3]=.5*(s-n)/h):(t[0]=.5*(n+s)/h,t[1]=.5*(a+l)/h,t[2]=.5*h,t[3]=.5*(r-i)/h)}return t}e.exports=n},{}],38:[function(t,e,r){"use strict";function n(t,e,r){return Math.sqrt(Math.pow(t,2)+Math.pow(e,2)+Math.pow(r,2))}function i(t,e,r,n){return Math.sqrt(Math.pow(t,2)+Math.pow(e,2)+Math.pow(r,2)+Math.pow(n,2))}function o(t,e){var r=e[0],n=e[1],o=e[2],a=e[3],s=i(r,n,o,a);s>1e-6?(t[0]=r/s,t[1]=n/s,t[2]=o/s,t[3]=a/s):(t[0]=t[1]=t[2]=0,t[3]=1)}function a(t,e,r){this.radius=l([r]),this.center=l(e),this.rotation=l(t),this.computedRadius=this.radius.curve(0),this.computedCenter=this.center.curve(0),this.computedRotation=this.rotation.curve(0),this.computedUp=[.1,0,0],this.computedEye=[.1,0,0],this.computedMatrix=[.1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],this.recalcMatrix(0)}function s(t){t=t||{};var e=t.center||[0,0,0],r=t.rotation||[0,0,0,1],n=t.radius||1;e=[].slice.call(e,0,3),r=[].slice.call(r,0,4),o(r,r);var i=new a(r,e,Math.log(n));return i.setDistanceLimits(t.zoomMin,t.zoomMax),("eye"in t||"up"in t)&&i.lookAt(0,t.eye,t.center,t.up),i}e.exports=s;var l=t("filtered-vector"),u=t("gl-mat4/lookAt"),c=t("gl-mat4/fromQuat"),h=t("gl-mat4/invert"),f=t("./lib/quatFromFrame"),d=a.prototype;d.lastT=function(){return Math.max(this.radius.lastT(),this.center.lastT(),this.rotation.lastT())},d.recalcMatrix=function(t){this.radius.curve(t),this.center.curve(t),this.rotation.curve(t);var e=this.computedRotation;o(e,e);var r=this.computedMatrix;c(r,e);var n=this.computedCenter,i=this.computedEye,a=this.computedUp,s=Math.exp(this.computedRadius[0]);i[0]=n[0]+s*r[2],i[1]=n[1]+s*r[6],i[2]=n[2]+s*r[10],a[0]=r[1],a[1]=r[5],a[2]=r[9];for(var l=0;3>l;++l){for(var u=0,h=0;3>h;++h)u+=r[l+4*h]*i[h];r[12+l]=-u}},d.getMatrix=function(t,e){this.recalcMatrix(t);var r=this.computedMatrix;if(e){for(var n=0;16>n;++n)e[n]=r[n];return e}return r},d.idle=function(t){this.center.idle(t),this.radius.idle(t),this.rotation.idle(t)},d.flush=function(t){this.center.flush(t),this.radius.flush(t),this.rotation.flush(t)},d.pan=function(t,e,r,i){e=e||0,r=r||0,i=i||0,this.recalcMatrix(t);var o=this.computedMatrix,a=o[1],s=o[5],l=o[9],u=n(a,s,l);a/=u,s/=u,l/=u;var c=o[0],h=o[4],f=o[8],d=c*a+h*s+f*l;c-=a*d,h-=s*d,f-=l*d;var p=n(c,h,f);c/=p,h/=p,f/=p;var v=o[2],m=o[6],g=o[10],y=v*a+m*s+g*l,b=v*c+m*h+g*f;v-=y*a+b*c,m-=y*s+b*h,g-=y*l+b*f;var x=n(v,m,g);v/=x,m/=x,g/=x;var _=c*e+a*r,w=h*e+s*r,M=f*e+l*r;this.center.move(t,_,w,M);var k=Math.exp(this.computedRadius[0]);k=Math.max(1e-4,k+i),this.radius.set(t,Math.log(k))},d.rotate=function(t,e,r,o){this.recalcMatrix(t),e=e||0,r=r||0;var a=this.computedMatrix,s=a[0],l=a[4],u=a[8],c=a[1],h=a[5],f=a[9],d=a[2],p=a[6],v=a[10],m=e*s+r*c,g=e*l+r*h,y=e*u+r*f,b=-(p*y-v*g),x=-(v*m-d*y),_=-(d*g-p*m),w=Math.sqrt(Math.max(0,1-Math.pow(b,2)-Math.pow(x,2)-Math.pow(_,2))),M=i(b,x,_,w);M>1e-6?(b/=M,x/=M,_/=M,w/=M):(b=x=_=0,w=1);var k=this.computedRotation,A=k[0],T=k[1],E=k[2],S=k[3],L=A*w+S*b+T*_-E*x,z=T*w+S*x+E*b-A*_,I=E*w+S*_+A*x-T*b,P=S*w-A*b-T*x-E*_;if(o){b=d,x=p,_=v;var C=Math.sin(o)/n(b,x,_);b*=C,x*=C,_*=C,w=Math.cos(e),L=L*w+P*b+z*_-I*x,z=z*w+P*x+I*b-L*_,I=I*w+P*_+L*x-z*b,P=P*w-L*b-z*x-I*_}var R=i(L,z,I,P);R>1e-6?(L/=R,z/=R,I/=R,P/=R):(L=z=I=0,P=1),this.rotation.set(t,L,z,I,P)},d.lookAt=function(t,e,r,n){this.recalcMatrix(t),r=r||this.computedCenter,e=e||this.computedEye,n=n||this.computedUp;var i=this.computedMatrix;u(i,e,r,n);var a=this.computedRotation;f(a,i[0],i[1],i[2],i[4],i[5],i[6],i[8],i[9],i[10]),o(a,a),this.rotation.set(t,a[0],a[1],a[2],a[3]);for(var s=0,l=0;3>l;++l)s+=Math.pow(r[l]-e[l],2);this.radius.set(t,.5*Math.log(Math.max(s,1e-6))),this.center.set(t,r[0],r[1],r[2])},d.translate=function(t,e,r,n){this.center.move(t,e||0,r||0,n||0)},d.setMatrix=function(t,e){var r=this.computedRotation;f(r,e[0],e[1],e[2],e[4],e[5],e[6],e[8],e[9],e[10]),o(r,r),this.rotation.set(t,r[0],r[1],r[2],r[3]);var n=this.computedMatrix;h(n,e);var i=n[15];if(Math.abs(i)>1e-6){var a=n[12]/i,s=n[13]/i,l=n[14]/i;this.recalcMatrix(t);var u=Math.exp(this.computedRadius[0]);this.center.set(t,a-n[2]*u,s-n[6]*u,l-n[10]*u),this.radius.idle(t)}else this.center.idle(t),this.radius.idle(t)},d.setDistance=function(t,e){e>0&&this.radius.set(t,Math.log(e))},d.setDistanceLimits=function(t,e){t=t>0?Math.log(t):-(1/0),
+-e=e>0?Math.log(e):1/0,e=Math.max(e,t),this.radius.bounds[0][0]=t,this.radius.bounds[1][0]=e},d.getDistanceLimits=function(t){var e=this.radius.bounds;return t?(t[0]=Math.exp(e[0][0]),t[1]=Math.exp(e[1][0]),t):[Math.exp(e[0][0]),Math.exp(e[1][0])]},d.toJSON=function(){return this.recalcMatrix(this.lastT()),{center:this.computedCenter.slice(),rotation:this.computedRotation.slice(),distance:Math.log(this.computedRadius[0]),zoomMin:this.radius.bounds[0][0],zoomMax:this.radius.bounds[1][0]}},d.fromJSON=function(t){var e=this.lastT(),r=t.center;r&&this.center.set(e,r[0],r[1],r[2]);var n=t.rotation;n&&this.rotation.set(e,n[0],n[1],n[2],n[3]);var i=t.distance;i&&i>0&&this.radius.set(e,Math.log(i)),this.setDistanceLimits(t.zoomMin,t.zoomMax)}},{"./lib/quatFromFrame":37,"filtered-vector":21,"gl-mat4/fromQuat":140,"gl-mat4/invert":143,"gl-mat4/lookAt":144}],39:[function(t,e,r){"use strict";function n(t,e,r){return Math.sqrt(Math.pow(t,2)+Math.pow(e,2)+Math.pow(r,2))}function i(t){return Math.min(1,Math.max(-1,t))}function o(t){var e=Math.abs(t[0]),r=Math.abs(t[1]),n=Math.abs(t[2]),i=[0,0,0];e>Math.max(r,n)?i[2]=1:r>Math.max(e,n)?i[0]=1:i[1]=1;for(var o=0,a=0,s=0;3>s;++s)o+=t[s]*t[s],a+=i[s]*t[s];for(var s=0;3>s;++s)i[s]-=a/o*t[s];return f(i,i),i}function a(t,e,r,n,i,o,a,s){this.center=l(r),this.up=l(n),this.right=l(i),this.radius=l([o]),this.angle=l([a,s]),this.angle.bounds=[[-(1/0),-Math.PI/2],[1/0,Math.PI/2]],this.setDistanceLimits(t,e),this.computedCenter=this.center.curve(0),this.computedUp=this.up.curve(0),this.computedRight=this.right.curve(0),this.computedRadius=this.radius.curve(0),this.computedAngle=this.angle.curve(0),this.computedToward=[0,0,0],this.computedEye=[0,0,0],this.computedMatrix=new Array(16);for(var u=0;16>u;++u)this.computedMatrix[u]=.5;this.recalcMatrix(0)}function s(t){t=t||{};var e=t.center||[0,0,0],r=t.up||[0,1,0],i=t.right||o(r),s=t.radius||1,l=t.theta||0,u=t.phi||0;if(e=[].slice.call(e,0,3),r=[].slice.call(r,0,3),f(r,r),i=[].slice.call(i,0,3),f(i,i),"eye"in t){var c=t.eye,p=[c[0]-e[0],c[1]-e[1],c[2]-e[2]];h(i,p,r),n(i[0],i[1],i[2])<1e-6?i=o(r):f(i,i),s=n(p[0],p[1],p[2]);var v=d(r,p)/s,m=d(i,p)/s;u=Math.acos(v),l=Math.acos(m)}return s=Math.log(s),new a(t.zoomMin,t.zoomMax,e,r,i,s,l,u)}e.exports=s;var l=t("filtered-vector"),u=t("gl-mat4/invert"),c=t("gl-mat4/rotate"),h=t("gl-vec3/cross"),f=t("gl-vec3/normalize"),d=t("gl-vec3/dot"),p=a.prototype;p.setDistanceLimits=function(t,e){t=t>0?Math.log(t):-(1/0),e=e>0?Math.log(e):1/0,e=Math.max(e,t),this.radius.bounds[0][0]=t,this.radius.bounds[1][0]=e},p.getDistanceLimits=function(t){var e=this.radius.bounds[0];return t?(t[0]=Math.exp(e[0][0]),t[1]=Math.exp(e[1][0]),t):[Math.exp(e[0][0]),Math.exp(e[1][0])]},p.recalcMatrix=function(t){this.center.curve(t),this.up.curve(t),this.right.curve(t),this.radius.curve(t),this.angle.curve(t);for(var e=this.computedUp,r=this.computedRight,i=0,o=0,a=0;3>a;++a)o+=e[a]*r[a],i+=e[a]*e[a];for(var s=Math.sqrt(i),l=0,a=0;3>a;++a)r[a]-=e[a]*o/i,l+=r[a]*r[a],e[a]/=s;for(var u=Math.sqrt(l),a=0;3>a;++a)r[a]/=u;var c=this.computedToward;h(c,e,r),f(c,c);for(var d=Math.exp(this.computedRadius[0]),p=this.computedAngle[0],v=this.computedAngle[1],m=Math.cos(p),g=Math.sin(p),y=Math.cos(v),b=Math.sin(v),x=this.computedCenter,_=m*y,w=g*y,M=b,k=-m*b,A=-g*b,T=y,E=this.computedEye,S=this.computedMatrix,a=0;3>a;++a){var L=_*r[a]+w*c[a]+M*e[a];S[4*a+1]=k*r[a]+A*c[a]+T*e[a],S[4*a+2]=L,S[4*a+3]=0}var z=S[1],I=S[5],P=S[9],C=S[2],R=S[6],D=S[10],O=I*D-P*R,F=P*C-z*D,j=z*R-I*C,N=n(O,F,j);O/=N,F/=N,j/=N,S[0]=O,S[4]=F,S[8]=j;for(var a=0;3>a;++a)E[a]=x[a]+S[2+4*a]*d;for(var a=0;3>a;++a){for(var l=0,B=0;3>B;++B)l+=S[a+4*B]*E[B];S[12+a]=-l}S[15]=1},p.getMatrix=function(t,e){this.recalcMatrix(t);var r=this.computedMatrix;if(e){for(var n=0;16>n;++n)e[n]=r[n];return e}return r};var v=[0,0,0];p.rotate=function(t,e,r,n){if(this.angle.move(t,e,r),n){this.recalcMatrix(t);var i=this.computedMatrix;v[0]=i[2],v[1]=i[6],v[2]=i[10];for(var o=this.computedUp,a=this.computedRight,s=this.computedToward,l=0;3>l;++l)i[4*l]=o[l],i[4*l+1]=a[l],i[4*l+2]=s[l];c(i,i,n,v);for(var l=0;3>l;++l)o[l]=i[4*l],a[l]=i[4*l+1];this.up.set(t,o[0],o[1],o[2]),this.right.set(t,a[0],a[1],a[2])}},p.pan=function(t,e,r,i){e=e||0,r=r||0,i=i||0,this.recalcMatrix(t);var o=this.computedMatrix,a=(Math.exp(this.computedRadius[0]),o[1]),s=o[5],l=o[9],u=n(a,s,l);a/=u,s/=u,l/=u;var c=o[0],h=o[4],f=o[8],d=c*a+h*s+f*l;c-=a*d,h-=s*d,f-=l*d;var p=n(c,h,f);c/=p,h/=p,f/=p;var v=c*e+a*r,m=h*e+s*r,g=f*e+l*r;this.center.move(t,v,m,g);var y=Math.exp(this.computedRadius[0]);y=Math.max(1e-4,y+i),this.radius.set(t,Math.log(y))},p.translate=function(t,e,r,n){this.center.move(t,e||0,r||0,n||0)},p.setMatrix=function(t,e,r,o){var a=1;"number"==typeof r&&(a=0|r),(0>a||a>3)&&(a=1);var s=(a+2)%3;e||(this.recalcMatrix(t),e=this.computedMatrix);var l=e[a],c=e[a+4],h=e[a+8];if(o){var f=Math.abs(l),d=Math.abs(c),p=Math.abs(h),v=Math.max(f,d,p);f===v?(l=0>l?-1:1,c=h=0):p===v?(h=0>h?-1:1,l=c=0):(c=0>c?-1:1,l=h=0)}else{var m=n(l,c,h);l/=m,c/=m,h/=m}var g=e[s],y=e[s+4],b=e[s+8],x=g*l+y*c+b*h;g-=l*x,y-=c*x,b-=h*x;var _=n(g,y,b);g/=_,y/=_,b/=_;var w=c*b-h*y,M=h*g-l*b,k=l*y-c*g,A=n(w,M,k);w/=A,M/=A,k/=A,this.center.jump(t,G,H,X),this.radius.idle(t),this.up.jump(t,l,c,h),this.right.jump(t,g,y,b);var T,E;if(2===a){var S=e[1],L=e[5],z=e[9],I=S*g+L*y+z*b,P=S*w+L*M+z*k;T=0>O?-Math.PI/2:Math.PI/2,E=Math.atan2(P,I)}else{var C=e[2],R=e[6],D=e[10],O=C*l+R*c+D*h,F=C*g+R*y+D*b,j=C*w+R*M+D*k;T=Math.asin(i(O)),E=Math.atan2(j,F)}this.angle.jump(t,E,T),this.recalcMatrix(t);var N=e[2],B=e[6],U=e[10],V=this.computedMatrix;u(V,e);var q=V[15],G=V[12]/q,H=V[13]/q,X=V[14]/q,Y=Math.exp(this.computedRadius[0]);this.center.jump(t,G-N*Y,H-B*Y,X-U*Y)},p.lastT=function(){return Math.max(this.center.lastT(),this.up.lastT(),this.right.lastT(),this.radius.lastT(),this.angle.lastT())},p.idle=function(t){this.center.idle(t),this.up.idle(t),this.right.idle(t),this.radius.idle(t),this.angle.idle(t)},p.flush=function(t){this.center.flush(t),this.up.flush(t),this.right.flush(t),this.radius.flush(t),this.angle.flush(t)},p.setDistance=function(t,e){e>0&&this.radius.set(t,Math.log(e))},p.lookAt=function(t,e,r,o){this.recalcMatrix(t),e=e||this.computedEye,r=r||this.computedCenter,o=o||this.computedUp;var a=o[0],s=o[1],l=o[2],u=n(a,s,l);if(!(1e-6>u)){a/=u,s/=u,l/=u;var c=e[0]-r[0],h=e[1]-r[1],f=e[2]-r[2],d=n(c,h,f);if(!(1e-6>d)){c/=d,h/=d,f/=d;var p=this.computedRight,v=p[0],m=p[1],g=p[2],y=a*v+s*m+l*g;v-=y*a,m-=y*s,g-=y*l;var b=n(v,m,g);if(!(.01>b&&(v=s*f-l*h,m=l*c-a*f,g=a*h-s*c,b=n(v,m,g),1e-6>b))){v/=b,m/=b,g/=b,this.up.set(t,a,s,l),this.right.set(t,v,m,g),this.center.set(t,r[0],r[1],r[2]),this.radius.set(t,Math.log(d));var x=s*g-l*m,_=l*v-a*g,w=a*m-s*v,M=n(x,_,w);x/=M,_/=M,w/=M;var k=a*c+s*h+l*f,A=v*c+m*h+g*f,T=x*c+_*h+w*f,E=Math.asin(i(k)),S=Math.atan2(T,A),L=this.angle._state,z=L[L.length-1],I=L[L.length-2];z%=2*Math.PI;var P=Math.abs(z+2*Math.PI-S),C=Math.abs(z-S),R=Math.abs(z-2*Math.PI-S);C>P&&(z+=2*Math.PI),C>R&&(z-=2*Math.PI),this.angle.jump(this.angle.lastT(),z,I),this.angle.set(t,S,E)}}}}},{"filtered-vector":21,"gl-mat4/invert":143,"gl-mat4/rotate":147,"gl-vec3/cross":24,"gl-vec3/dot":25,"gl-vec3/normalize":28}],40:[function(t,e,r){"use strict";function n(t,e){this._controllerNames=Object.keys(t),this._controllerList=this._controllerNames.map(function(e){return t[e]}),this._mode=e,this._active=t[e],this._active||(this._mode="turntable",this._active=t.turntable),this.modes=this._controllerNames,this.computedMatrix=this._active.computedMatrix,this.computedEye=this._active.computedEye,this.computedUp=this._active.computedUp,this.computedCenter=this._active.computedCenter,this.computedRadius=this._active.computedRadius}function i(t){t=t||{};var e=t.eye||[0,0,1],r=t.center||[0,0,0],i=t.up||[0,1,0],l=t.distanceLimits||[0,1/0],u=t.mode||"turntable",c=o(),h=a(),f=s();return c.setDistanceLimits(l[0],l[1]),c.lookAt(0,e,r,i),h.setDistanceLimits(l[0],l[1]),h.lookAt(0,e,r,i),f.setDistanceLimits(l[0],l[1]),f.lookAt(0,e,r,i),new n({turntable:c,orbit:h,matrix:f},u)}e.exports=i;var o=t("turntable-camera-controller"),a=t("orbit-camera-controller"),s=t("matrix-camera-controller"),l=n.prototype,u=[["flush",1],["idle",1],["lookAt",4],["rotate",4],["pan",4],["translate",4],["setMatrix",2],["setDistanceLimits",2],["setDistance",2]];u.forEach(function(t){for(var e=t[0],r=[],n=0;n<t[1];++n)r.push("a"+n);var i="var cc=this._controllerList;for(var i=0;i<cc.length;++i){cc[i]."+t[0]+"("+r.join()+")}";l[e]=Function.apply(null,r.concat(i))}),l.recalcMatrix=function(t){this._active.recalcMatrix(t)},l.getDistance=function(t){return this._active.getDistance(t)},l.getDistanceLimits=function(t){return this._active.getDistanceLimits(t)},l.lastT=function(){return this._active.lastT()},l.setMode=function(t){if(t!==this._mode){var e=this._controllerNames.indexOf(t);if(!(0>e)){var 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s=t[i]|t[i+1]<<8|t[i+2]<<16;this.words[a]|=s<<o&67108863,this.words[a+1]=s>>>26-o&67108863,o+=24,o>=26&&(o-=26,a++)}return this.strip()},i.prototype._parseHex=function(t,e){this.length=Math.ceil((t.length-e)/6),this.words=new Array(this.length);for(var r=0;r<this.length;r++)this.words[r]=0;for(var n=0,r=t.length-6,i=0;r>=e;r-=6){var a=o(t,r,r+6);this.words[i]|=a<<n&67108863,this.words[i+1]|=a>>>26-n&4194303,n+=24,n>=26&&(n-=26,i++)}if(r+6!==e){var a=o(t,e,r+6);this.words[i]|=a<<n&67108863,this.words[i+1]|=a>>>26-n&4194303}this.strip()},i.prototype._parseBase=function(t,e,r){this.words=[0],this.length=1;for(var n=0,i=1;67108863>=i;i*=e)n++;n--,i=i/e|0;for(var o=t.length-r,s=o%n,l=Math.min(o,o-s)+r,u=0,c=r;l>c;c+=n)u=a(t,c,c+n,e),this.imuln(i),this.words[0]+u<67108864?this.words[0]+=u:this._iaddn(u);if(0!==s){for(var h=1,u=a(t,c,t.length,e),c=0;s>c;c++)h*=e;this.imuln(h),this.words[0]+u<67108864?this.words[0]+=u:this._iaddn(u)}},i.prototype.copy=function(t){t.words=new Array(this.length);for(var e=0;e<this.length;e++)t.words[e]=this.words[e];t.length=this.length,t.sign=this.sign,t.red=this.red},i.prototype.clone=function(){var t=new i(null);return this.copy(t),t},i.prototype.strip=function(){for(;this.length>1&&0===this.words[this.length-1];)this.length--;return this._normSign()},i.prototype._normSign=function(){return 1===this.length&&0===this.words[0]&&(this.sign=!1),this},i.prototype.inspect=function(){return(this.red?"<BN-R: ":"<BN: ")+this.toString(16)+">"};var p=["","0","00","000","0000","00000","000000","0000000","00000000","000000000","0000000000","00000000000","000000000000","0000000000000","00000000000000","000000000000000","0000000000000000","00000000000000000","000000000000000000","0000000000000000000","00000000000000000000","000000000000000000000","0000000000000000000000","00000000000000000000000","000000000000000000000000","0000000000000000000000000"],v=[0,0,25,16,12,11,10,9,8,8,7,7,7,7,6,6,6,6,6,6,6,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5],m=[0,0,33554432,43046721,16777216,48828125,60466176,40353607,16777216,43046721,1e7,19487171,35831808,62748517,7529536,11390625,16777216,24137569,34012224,47045881,64e6,4084101,5153632,6436343,7962624,9765625,11881376,14348907,17210368,20511149,243e5,28629151,33554432,39135393,45435424,52521875,60466176];i.prototype.toString=function(t,e){if(t=t||10,16===t||"hex"===t){for(var n="",i=0,e=0|e||1,o=0,a=0;a<this.length;a++){var s=this.words[a],l=(16777215&(s<<i|o)).toString(16);o=s>>>24-i&16777215,n=0!==o||a!==this.length-1?p[6-l.length]+l+n:l+n,i+=2,i>=26&&(i-=26,a--)}for(0!==o&&(n=o.toString(16)+n);n.length%e!==0;)n="0"+n;return this.sign&&(n="-"+n),n}if(t===(0|t)&&t>=2&&36>=t){var u=v[t],c=m[t],n="",h=this.clone();for(h.sign=!1;0!==h.cmpn(0);){var f=h.modn(c).toString(t);h=h.idivn(c),n=0!==h.cmpn(0)?p[u-f.length]+f+n:f+n}return 0===this.cmpn(0)&&(n="0"+n),this.sign&&(n="-"+n),n}r(!1,"Base should be between 2 and 36")},i.prototype.toJSON=function(){return this.toString(16)},i.prototype.toArray=function(t){this.strip();var e=new Array(this.byteLength());e[0]=0;var r=this.clone();if("le"!==t)for(var n=0;0!==r.cmpn(0);n++){var i=r.andln(255);r.ishrn(8),e[e.length-n-1]=i}else for(var n=0;0!==r.cmpn(0);n++){var i=r.andln(255);r.ishrn(8),e[n]=i}return e},Math.clz32?i.prototype._countBits=function(t){return 32-Math.clz32(t)}:i.prototype._countBits=function(t){var e=t,r=0;return e>=4096&&(r+=13,e>>>=13),e>=64&&(r+=7,e>>>=7),e>=8&&(r+=4,e>>>=4),e>=2&&(r+=2,e>>>=2),r+e},i.prototype._zeroBits=function(t){if(0===t)return 26;var e=t,r=0;return 0===(8191&e)&&(r+=13,e>>>=13),0===(127&e)&&(r+=7,e>>>=7),0===(15&e)&&(r+=4,e>>>=4),0===(3&e)&&(r+=2,e>>>=2),0===(1&e)&&r++,r},i.prototype.bitLength=function(){var t=0,e=this.words[this.length-1],t=this._countBits(e);return 26*(this.length-1)+t},i.prototype.zeroBits=function(){if(0===this.cmpn(0))return 0;for(var t=0,e=0;e<this.length;e++){var r=this._zeroBits(this.words[e]);if(t+=r,26!==r)break}return t},i.prototype.byteLength=function(){return Math.ceil(this.bitLength()/8)},i.prototype.neg=function(){if(0===this.cmpn(0))return this.clone();var t=this.clone();return t.sign=!this.sign,t},i.prototype.ior=function(t){for(this.sign=this.sign||t.sign;this.length<t.length;)this.words[this.length++]=0;for(var e=0;e<t.length;e++)this.words[e]=this.words[e]|t.words[e];return this.strip()},i.prototype.or=function(t){return this.length>t.length?this.clone().ior(t):t.clone().ior(this)},i.prototype.iand=function(t){this.sign=this.sign&&t.sign;var e;e=this.length>t.length?t:this;for(var r=0;r<e.length;r++)this.words[r]=this.words[r]&t.words[r];return this.length=e.length,this.strip()},i.prototype.and=function(t){return this.length>t.length?this.clone().iand(t):t.clone().iand(this)},i.prototype.ixor=function(t){this.sign=this.sign||t.sign;var e,r;this.length>t.length?(e=this,r=t):(e=t,r=this);for(var n=0;n<r.length;n++)this.words[n]=e.words[n]^r.words[n];if(this!==e)for(;n<e.length;n++)this.words[n]=e.words[n];return this.length=e.length,this.strip()},i.prototype.xor=function(t){return this.length>t.length?this.clone().ixor(t):t.clone().ixor(this)},i.prototype.setn=function(t,e){r("number"==typeof t&&t>=0);for(var n=t/26|0,i=t%26;this.length<=n;)this.words[this.length++]=0;return e?this.words[n]=this.words[n]|1<<i:this.words[n]=this.words[n]&~(1<<i),this.strip()},i.prototype.iadd=function(t){if(this.sign&&!t.sign){this.sign=!1;var e=this.isub(t);return this.sign=!this.sign,this._normSign()}if(!this.sign&&t.sign){t.sign=!1;var e=this.isub(t);return t.sign=!0,e._normSign()}var r,n;this.length>t.length?(r=this,n=t):(r=t,n=this);for(var i=0,o=0;o<n.length;o++){var e=r.words[o]+n.words[o]+i;this.words[o]=67108863&e,i=e>>>26}for(;0!==i&&o<r.length;o++){var e=r.words[o]+i;this.words[o]=67108863&e,i=e>>>26}if(this.length=r.length,0!==i)this.words[this.length]=i,this.length++;else if(r!==this)for(;o<r.length;o++)this.words[o]=r.words[o];return this},i.prototype.add=function(t){if(t.sign&&!this.sign){t.sign=!1;var e=this.sub(t);return t.sign=!0,e}if(!t.sign&&this.sign){this.sign=!1;var e=t.sub(this);return this.sign=!0,e}return this.length>t.length?this.clone().iadd(t):t.clone().iadd(this)},i.prototype.isub=function(t){if(t.sign){t.sign=!1;var e=this.iadd(t);return t.sign=!0,e._normSign()}if(this.sign)return this.sign=!1,this.iadd(t),this.sign=!0,this._normSign();var r=this.cmp(t);if(0===r)return this.sign=!1,this.length=1,this.words[0]=0,this;var n,i;r>0?(n=this,i=t):(n=t,i=this);for(var o=0,a=0;a<i.length;a++){var e=n.words[a]-i.words[a]+o;o=e>>26,this.words[a]=67108863&e}for(;0!==o&&a<n.length;a++){var e=n.words[a]+o;o=e>>26,this.words[a]=67108863&e}if(0===o&&a<n.length&&n!==this)for(;a<n.length;a++)this.words[a]=n.words[a];return this.length=Math.max(this.length,a),n!==this&&(this.sign=!0),this.strip()},i.prototype.sub=function(t){return this.clone().isub(t)},i.prototype._smallMulTo=function(t,e){e.sign=t.sign!==this.sign,e.length=this.length+t.length;for(var r=0,n=0;n<e.length-1;n++){for(var i=r>>>26,o=67108863&r,a=Math.min(n,t.length-1),s=Math.max(0,n-this.length+1);a>=s;s++){var l=n-s,u=0|this.words[l],c=0|t.words[s],h=u*c,f=67108863&h;i=i+(h/67108864|0)|0,f=f+o|0,o=67108863&f,i=i+(f>>>26)|0}e.words[n]=o,r=i}return 0!==r?e.words[n]=r:e.length--,e.strip()},i.prototype._bigMulTo=function(t,e){e.sign=t.sign!==this.sign,e.length=this.length+t.length;for(var r=0,n=0,i=0;i<e.length-1;i++){var o=n;n=0;for(var a=67108863&r,s=Math.min(i,t.length-1),l=Math.max(0,i-this.length+1);s>=l;l++){var u=i-l,c=0|this.words[u],h=0|t.words[l],f=c*h,d=67108863&f;o=o+(f/67108864|0)|0,d=d+a|0,a=67108863&d,o=o+(d>>>26)|0,n+=o>>>26,o&=67108863}e.words[i]=a,r=o,o=n}return 0!==r?e.words[i]=r:e.length--,e.strip()},i.prototype.mulTo=function(t,e){var r;return r=this.length+t.length<63?this._smallMulTo(t,e):this._bigMulTo(t,e)},i.prototype.mul=function(t){var e=new i(null);return e.words=new Array(this.length+t.length),this.mulTo(t,e)},i.prototype.imul=function(t){if(0===this.cmpn(0)||0===t.cmpn(0))return this.words[0]=0,this.length=1,this;var e=this.length,r=t.length;this.sign=t.sign!==this.sign,this.length=this.length+t.length,this.words[this.length-1]=0;for(var n=this.length-2;n>=0;n--){for(var i=0,o=0,a=Math.min(n,r-1),s=Math.max(0,n-e+1);a>=s;s++){var l=n-s,u=this.words[l],c=t.words[s],h=u*c,f=67108863&h;i+=h/67108864|0,f+=o,o=67108863&f,i+=f>>>26}this.words[n]=o,this.words[n+1]+=i,i=0}for(var i=0,l=1;l<this.length;l++){var d=this.words[l]+i;this.words[l]=67108863&d,i=d>>>26}return this.strip()},i.prototype.imuln=function(t){r("number"==typeof t);for(var e=0,n=0;n<this.length;n++){var i=this.words[n]*t,o=(67108863&i)+(67108863&e);e>>=26,e+=i/67108864|0,e+=o>>>26,this.words[n]=67108863&o}return 0!==e&&(this.words[n]=e,this.length++),this},i.prototype.muln=function(t){return this.clone().imuln(t)},i.prototype.sqr=function(){return this.mul(this)},i.prototype.isqr=function(){return this.mul(this)},i.prototype.ishln=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=67108863>>>26-e<<26-e;if(0!==e){for(var o=0,a=0;a<this.length;a++){var s=this.words[a]&i,l=this.words[a]-s<<e;this.words[a]=l|o,o=s>>>26-e}o&&(this.words[a]=o,this.length++)}if(0!==n){for(var a=this.length-1;a>=0;a--)this.words[a+n]=this.words[a];for(var a=0;n>a;a++)this.words[a]=0;this.length+=n}return this.strip()},i.prototype.ishrn=function(t,e,n){r("number"==typeof t&&t>=0);var i;i=e?(e-e%26)/26:0;var o=t%26,a=Math.min((t-o)/26,this.length),s=67108863^67108863>>>o<<o,l=n;if(i-=a,i=Math.max(0,i),l){for(var u=0;a>u;u++)l.words[u]=this.words[u];l.length=a}if(0===a);else if(this.length>a){this.length-=a;for(var u=0;u<this.length;u++)this.words[u]=this.words[u+a]}else this.words[0]=0,this.length=1;for(var c=0,u=this.length-1;u>=0&&(0!==c||u>=i);u--){var h=this.words[u];this.words[u]=c<<26-o|h>>>o,c=h&s}return l&&0!==c&&(l.words[l.length++]=c),0===this.length&&(this.words[0]=0,this.length=1),this.strip(),this},i.prototype.shln=function(t){return this.clone().ishln(t)},i.prototype.shrn=function(t){return this.clone().ishrn(t)},i.prototype.testn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n)return!1;var o=this.words[n];return!!(o&i)},i.prototype.imaskn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26;if(r(!this.sign,"imaskn works only with positive numbers"),0!==e&&n++,this.length=Math.min(n,this.length),0!==e){var i=67108863^67108863>>>e<<e;this.words[this.length-1]&=i}return this.strip()},i.prototype.maskn=function(t){return this.clone().imaskn(t)},i.prototype.iaddn=function(t){return r("number"==typeof t),0>t?this.isubn(-t):this.sign?1===this.length&&this.words[0]<t?(this.words[0]=t-this.words[0],this.sign=!1,this):(this.sign=!1,this.isubn(t),this.sign=!0,this):this._iaddn(t)},i.prototype._iaddn=function(t){this.words[0]+=t;for(var e=0;e<this.length&&this.words[e]>=67108864;e++)this.words[e]-=67108864,e===this.length-1?this.words[e+1]=1:this.words[e+1]++;return this.length=Math.max(this.length,e+1),this},i.prototype.isubn=function(t){if(r("number"==typeof t),0>t)return this.iaddn(-t);if(this.sign)return this.sign=!1,this.iaddn(t),this.sign=!0,this;this.words[0]-=t;for(var e=0;e<this.length&&this.words[e]<0;e++)this.words[e]+=67108864,this.words[e+1]-=1;return this.strip()},i.prototype.addn=function(t){return this.clone().iaddn(t)},i.prototype.subn=function(t){return this.clone().isubn(t)},i.prototype.iabs=function(){return this.sign=!1,this},i.prototype.abs=function(){return this.clone().iabs()},i.prototype._ishlnsubmul=function(t,e,n){var i,o=t.length+n;if(this.words.length<o){for(var a=new Array(o),i=0;i<this.length;i++)a[i]=this.words[i];this.words=a}else i=this.length;for(this.length=Math.max(this.length,o);i<this.length;i++)this.words[i]=0;for(var s=0,i=0;i<t.length;i++){var l=this.words[i+n]+s,u=t.words[i]*e;l-=67108863&u,s=(l>>26)-(u/67108864|0),this.words[i+n]=67108863&l}for(;i<this.length-n;i++){var l=this.words[i+n]+s;s=l>>26,this.words[i+n]=67108863&l}if(0===s)return this.strip();r(-1===s),s=0;for(var i=0;i<this.length;i++){var l=-this.words[i]+s;s=l>>26,this.words[i]=67108863&l}return this.sign=!0,this.strip()},i.prototype._wordDiv=function(t,e){var r=this.length-t.length,n=this.clone(),o=t,a=o.words[o.length-1],s=this._countBits(a);r=26-s,0!==r&&(o=o.shln(r),n.ishln(r),a=o.words[o.length-1]);var l,u=n.length-o.length;if("mod"!==e){l=new i(null),l.length=u+1,l.words=new Array(l.length);for(var c=0;c<l.length;c++)l.words[c]=0}var h=n.clone()._ishlnsubmul(o,1,u);h.sign||(n=h,l&&(l.words[u]=1));for(var f=u-1;f>=0;f--){var d=67108864*n.words[o.length+f]+n.words[o.length+f-1];for(d=Math.min(d/a|0,67108863),n._ishlnsubmul(o,d,f);n.sign;)d--,n.sign=!1,n._ishlnsubmul(o,1,f),0!==n.cmpn(0)&&(n.sign=!n.sign);l&&(l.words[f]=d)}return l&&l.strip(),n.strip(),"div"!==e&&0!==r&&n.ishrn(r),{div:l?l:null,mod:n}},i.prototype.divmod=function(t,e){if(r(0!==t.cmpn(0)),this.sign&&!t.sign){var n,o,a=this.neg().divmod(t,e);return"mod"!==e&&(n=a.div.neg()),"div"!==e&&(o=0===a.mod.cmpn(0)?a.mod:t.sub(a.mod)),{div:n,mod:o}}if(!this.sign&&t.sign){var n,a=this.divmod(t.neg(),e);return"mod"!==e&&(n=a.div.neg()),{div:n,mod:a.mod}}return this.sign&&t.sign?this.neg().divmod(t.neg(),e):t.length>this.length||this.cmp(t)<0?{div:new i(0),mod:this}:1===t.length?"div"===e?{div:this.divn(t.words[0]),mod:null}:"mod"===e?{div:null,mod:new i(this.modn(t.words[0]))}:{div:this.divn(t.words[0]),mod:new i(this.modn(t.words[0]))}:this._wordDiv(t,e)},i.prototype.div=function(t){return this.divmod(t,"div").div},i.prototype.mod=function(t){return this.divmod(t,"mod").mod},i.prototype.divRound=function(t){var e=this.divmod(t);if(0===e.mod.cmpn(0))return e.div;var r=e.div.sign?e.mod.isub(t):e.mod,n=t.shrn(1),i=t.andln(1),o=r.cmp(n);return 0>o||1===i&&0===o?e.div:e.div.sign?e.div.isubn(1):e.div.iaddn(1)},i.prototype.modn=function(t){r(67108863>=t);for(var e=(1<<26)%t,n=0,i=this.length-1;i>=0;i--)n=(e*n+this.words[i])%t;return n},i.prototype.idivn=function(t){r(67108863>=t);for(var e=0,n=this.length-1;n>=0;n--){var i=this.words[n]+67108864*e;this.words[n]=i/t|0,e=i%t}return this.strip()},i.prototype.divn=function(t){return this.clone().idivn(t)},i.prototype.egcd=function(t){r(!t.sign),r(0!==t.cmpn(0));var e=this,n=t.clone();e=e.sign?e.mod(t):e.clone();for(var o=new i(1),a=new i(0),s=new i(0),l=new i(1),u=0;e.isEven()&&n.isEven();)e.ishrn(1),n.ishrn(1),++u;for(var c=n.clone(),h=e.clone();0!==e.cmpn(0);){for(;e.isEven();)e.ishrn(1),o.isEven()&&a.isEven()?(o.ishrn(1),a.ishrn(1)):(o.iadd(c).ishrn(1),a.isub(h).ishrn(1));for(;n.isEven();)n.ishrn(1),s.isEven()&&l.isEven()?(s.ishrn(1),l.ishrn(1)):(s.iadd(c).ishrn(1),l.isub(h).ishrn(1));e.cmp(n)>=0?(e.isub(n),o.isub(s),a.isub(l)):(n.isub(e),s.isub(o),l.isub(a))}return{a:s,b:l,gcd:n.ishln(u)}},i.prototype._invmp=function(t){r(!t.sign),r(0!==t.cmpn(0));var 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t);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n){for(var o=this.length;n+1>o;o++)this.words[o]=0;return this.words[n]|=i,this.length=n+1,this}for(var a=i,o=n;0!==a&&o<this.length;o++){var s=this.words[o];s+=a,a=s>>>26,s&=67108863,this.words[o]=s}return 0!==a&&(this.words[o]=a,this.length++),this},i.prototype.cmpn=function(t){var e=0>t;if(e&&(t=-t),this.sign&&!e)return-1;if(!this.sign&&e)return 1;t&=67108863,this.strip();var r;if(this.length>1)r=1;else{var n=this.words[0];r=n===t?0:t>n?-1:1}return this.sign&&(r=-r),r},i.prototype.cmp=function(t){if(this.sign&&!t.sign)return-1;if(!this.sign&&t.sign)return 1;var e=this.ucmp(t);return this.sign?-e:e},i.prototype.ucmp=function(t){if(this.length>t.length)return 1;if(this.length<t.length)return-1;for(var e=0,r=this.length-1;r>=0;r--){var n=this.words[r],i=t.words[r];if(n!==i){i>n?e=-1:n>i&&(e=1);break}}return e},i.red=function(t){return new f(t)},i.prototype.toRed=function(t){return r(!this.red,"Already a number in reduction 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l=t("typedarray-pool"),u=t("ndarray-ops"),c=t("ndarray"),h=["uint8","uint8_clamped","uint16","uint32","int8","int16","int32","float32"],f=n.prototype;f.bind=function(){this.gl.bindBuffer(this.type,this.handle)},f.unbind=function(){this.gl.bindBuffer(this.type,null)},f.dispose=function(){this.gl.deleteBuffer(this.handle)},f.update=function(t,e){if("number"!=typeof e&&(e=-1),this.bind(),"object"==typeof t&&"undefined"!=typeof t.shape){var r=t.dtype;if(h.indexOf(r)<0&&(r="float32"),this.type===this.gl.ELEMENT_ARRAY_BUFFER){var n=gl.getExtension("OES_element_index_uint");r=n&&"uint16"!==r?"uint32":"uint16"}if(r===t.dtype&&a(t.shape,t.stride))0===t.offset&&t.data.length===t.shape[0]?this.length=i(this.gl,this.type,this.length,this.usage,t.data,e):this.length=i(this.gl,this.type,this.length,this.usage,t.data.subarray(t.offset,t.shape[0]),e);else{var 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n(t,e,r){this.plot=t,this.shader=e,this.buffer=r,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.numPoints=0,this.color=[0,0,0,1]}function i(t,e){var r=o(t.gl,l.vertex,l.fragment),i=a(t.gl),s=new n(t,r,i);return s.update(e),t.addObject(s),s}var o=t("gl-shader"),a=t("gl-buffer"),s=t("typedarray-pool"),l=t("./lib/shaders");e.exports=i;var u=[[1,0,0,1,0,0],[1,0,0,-1,0,0],[-1,0,0,-1,0,0],[-1,0,0,-1,0,0],[-1,0,0,1,0,0],[1,0,0,1,0,0],[1,0,-1,0,0,1],[1,0,-1,0,0,-1],[1,0,1,0,0,-1],[1,0,1,0,0,-1],[1,0,1,0,0,1],[1,0,-1,0,0,1],[-1,0,-1,0,0,1],[-1,0,-1,0,0,-1],[-1,0,1,0,0,-1],[-1,0,1,0,0,-1],[-1,0,1,0,0,1],[-1,0,-1,0,0,1],[0,1,1,0,0,0],[0,1,-1,0,0,0],[0,-1,-1,0,0,0],[0,-1,-1,0,0,0],[0,1,1,0,0,0],[0,-1,1,0,0,0],[0,1,0,-1,1,0],[0,1,0,-1,-1,0],[0,1,0,1,-1,0],[0,1,0,1,1,0],[0,1,0,-1,1,0],[0,1,0,1,-1,0],[0,-1,0,-1,1,0],[0,-1,0,-1,-1,0],[0,-1,0,1,-1,0],[0,-1,0,1,1,0],[0,-1,0,-1,1,0],[0,-1,0,1,-1,0]],c=n.prototype;c.draw=function(){var t=[1,0,0,0,1,0,0,0,1],e=[1,1];return function(){var r=this.plot,n=this.shader,i=this.buffer,o=this.bounds,a=this.numPoints;if(a){var s=r.gl,l=r.dataBox,c=r.viewBox,h=r.pixelRatio,f=o[2]-o[0],d=o[3]-o[1],p=l[2]-l[0],v=l[3]-l[1];t[0]=2*f/p,t[4]=2*d/v,t[6]=2*(o[0]-l[0])/p-1,t[7]=2*(o[1]-l[1])/v-1;var m=c[2]-c[0],g=c[3]-c[1];e[0]=2*h/m,e[1]=2*h/g,i.bind(),n.bind(),n.uniforms.viewTransform=t,n.uniforms.pixelScale=e,n.uniforms.color=this.color,n.attributes.position.pointer(s.FLOAT,!1,16,0),n.attributes.pixelOffset.pointer(s.FLOAT,!1,16,8),s.drawArrays(s.TRIANGLES,0,a*u.length)}}}(),c.drawPick=function(t){return t},c.pick=function(t,e){return null},c.update=function(t){t=t||{};var e,r,n,i=t.positions||[],o=t.errors||[],a=1;"lineWidth"in t&&(a=+t.lineWidth);var l=5;"capSize"in t&&(l=+t.capSize),this.color=(t.color||[0,0,0,1]).slice();var c=this.bounds=[1/0,1/0,-(1/0),-(1/0)],h=this.numPoints=i.length>>1;for(e=0;h>e;++e)r=i[2*e],n=i[2*e+1],c[0]=Math.min(r,c[0]),c[1]=Math.min(n,c[1]),c[2]=Math.max(r,c[2]),c[3]=Math.max(n,c[3]);c[2]===c[0]&&(c[2]+=1),c[3]===c[1]&&(c[3]+=1);var f=1/(c[2]-c[0]),d=1/(c[3]-c[1]),p=c[0],v=c[1],m=s.mallocFloat32(h*u.length*4),g=0;for(e=0;h>e;++e){r=i[2*e],n=i[2*e+1];for(var y=o[4*e],b=o[4*e+1],x=o[4*e+2],_=o[4*e+3],w=0;w<u.length;++w){var M=u[w],k=M[0],A=M[1];0>k?k*=y:k>0&&(k*=b),0>A?A*=x:A>0&&(A*=_),m[g++]=f*(r-p+k),m[g++]=d*(n-v+A),m[g++]=a*M[2]+(l+a)*M[4],m[g++]=a*M[3]+(l+a)*M[5]}}this.buffer.update(m),s.free(m)},c.dispose=function(){this.plot.removeObject(this),this.shader.dispose(),this.buffer.dispose()}},{"./lib/shaders":126,"gl-buffer":124,"gl-shader":203,"typedarray-pool":458}],126:[function(t,e,r){e.exports={vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 pixelOffset;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvoid main() 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e=t.gl,r=s(e),i=l(e,[{buffer:r,type:e.FLOAT,size:3,offset:0,stride:40},{buffer:r,type:e.FLOAT,size:4,offset:12,stride:40},{buffer:r,type:e.FLOAT,size:3,offset:28,stride:40}]),o=u(e);o.attributes.position.location=0,o.attributes.color.location=1,o.attributes.offset.location=2;var a=new n(e,r,i,o);return a.update(t),a}e.exports=a;var s=t("gl-buffer"),l=t("gl-vao"),u=t("./shaders/index"),c=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],h=n.prototype;h.isOpaque=function(){return this.opacity>=1},h.isTransparent=function(){return this.opacity<1},h.drawTransparent=h.draw=function(t){var e=this.gl,r=this.shader.uniforms;this.shader.bind();var n=r.view=t.view||c,i=r.projection=t.projection||c;r.model=t.model||c,r.clipBounds=this.clipBounds,r.opacity=this.opacity;var o=n[12],a=n[13],s=n[14],l=n[15],u=this.pixelRatio*(i[3]*o+i[7]*a+i[11]*s+i[15]*l)/e.drawingBufferHeight;this.vao.bind();for(var h=0;3>h;++h)e.lineWidth(this.lineWidth[h]),r.capSize=this.capSize[h]*u,e.drawArrays(e.LINES,this.lineOffset[h],this.lineCount[h]);this.vao.unbind()};var f=function(){for(var t=new Array(3),e=0;3>e;++e){for(var r=[],n=1;2>=n;++n)for(var i=-1;1>=i;i+=2){var o=(n+e)%3,a=[0,0,0];a[o]=i,r.push(a)}t[e]=r}return t}();h.update=function(t){t=t||{},"lineWidth"in t&&(this.lineWidth=t.lineWidth,Array.isArray(this.lineWidth)||(this.lineWidth=[this.lineWidth,this.lineWidth,this.lineWidth])),"capSize"in t&&(this.capSize=t.capSize,Array.isArray(this.capSize)||(this.capSize=[this.capSize,this.capSize,this.capSize])),"opacity"in t&&(this.opacity=t.opacity);var e=t.color||[[0,0,0],[0,0,0],[0,0,0]],r=t.position,n=t.error;if(Array.isArray(e[0])||(e=[e,e,e]),r&&n){var a=[],s=r.length,l=0;this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.lineCount=[0,0,0];for(var u=0;3>u;++u){this.lineOffset[u]=l;t:for(var c=0;s>c;++c){for(var h=r[c],f=0;3>f;++f)if(isNaN(h[f])||!isFinite(h[f]))continue t;var d=n[c],p=e[u];if(Array.isArray(p[0])&&(p=e[c]),3===p.length&&(p=[p[0],p[1],p[2],1]),!isNaN(d[0][u])&&!isNaN(d[1][u])){if(d[0][u]<0){var v=h.slice();v[u]+=d[0][u],a.push(h[0],h[1],h[2],p[0],p[1],p[2],p[3],0,0,0,v[0],v[1],v[2],p[0],p[1],p[2],p[3],0,0,0),i(this.bounds,v),l+=2+o(a,v,p,u)}if(d[1][u]>0){var v=h.slice();v[u]+=d[1][u],a.push(h[0],h[1],h[2],p[0],p[1],p[2],p[3],0,0,0,v[0],v[1],v[2],p[0],p[1],p[2],p[3],0,0,0),i(this.bounds,v),l+=2+o(a,v,p,u)}}}this.lineCount[u]=l-this.lineOffset[u]}this.buffer.update(a)}},h.dispose=function(){this.shader.dispose(),this.buffer.dispose(),this.vao.dispose()}},{"./shaders/index":128,"gl-buffer":124,"gl-vao":232}],128:[function(t,e,r){"use strict";var n=t("gl-shader"),i="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, offset;\nattribute vec4 color;\nuniform mat4 model, view, projection;\nuniform float capSize;\nvarying vec4 fragColor;\nvarying vec3 fragPosition;\n\nvoid main() {\n  vec4 worldPosition  = model * vec4(position, 1.0);\n  worldPosition       = (worldPosition / worldPosition.w) + vec4(capSize * offset, 0.0);\n  gl_Position         = projection * view * worldPosition;\n  fragColor           = color;\n  fragPosition        = position;\n}",o="precision mediump float;\n#define GLSLIFY 1\nuniform vec3 clipBounds[2];\nuniform float opacity;\nvarying vec3 fragPosition;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(fragPosition, clipBounds[0])) || any(greaterThan(fragPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = opacity * fragColor;\n}";e.exports=function(t){return n(t,i,o,null,[{name:"position",type:"vec3"},{name:"offset",type:"vec3"},{name:"color",type:"vec4"}])}},{"gl-shader":203}],129:[function(t,e,r){"use strict";function n(t){var e=t.getParameter(t.FRAMEBUFFER_BINDING),r=t.getParameter(t.RENDERBUFFER_BINDING),n=t.getParameter(t.TEXTURE_BINDING_2D);return[e,r,n]}function i(t,e){t.bindFramebuffer(t.FRAMEBUFFER,e[0]),t.bindRenderbuffer(t.RENDERBUFFER,e[1]),t.bindTexture(t.TEXTURE_2D,e[2])}function o(t,e){var r=t.getParameter(e.MAX_COLOR_ATTACHMENTS_WEBGL);y=new Array(r+1);for(var n=0;r>=n;++n){for(var i=new Array(r),o=0;n>o;++o)i[o]=t.COLOR_ATTACHMENT0+o;for(var o=n;r>o;++o)i[o]=t.NONE;y[n]=i}}function a(t){switch(t){case p:throw new Error("gl-fbo: Framebuffer unsupported");case v:throw new Error("gl-fbo: Framebuffer incomplete attachment");case m:throw new Error("gl-fbo: Framebuffer incomplete dimensions");case g:throw new Error("gl-fbo: Framebuffer incomplete missing attachment");default:throw new Error("gl-fbo: Framebuffer failed for unspecified reason")}}function s(t,e,r,n,i,o){if(!n)return null;var a=d(t,e,r,i,n);return a.magFilter=t.NEAREST,a.minFilter=t.NEAREST,a.mipSamples=1,a.bind(),t.framebufferTexture2D(t.FRAMEBUFFER,o,t.TEXTURE_2D,a.handle,0),a}function l(t,e,r,n,i){var o=t.createRenderbuffer();return 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b=r.checkFramebufferStatus(r.FRAMEBUFFER);if(b!==r.FRAMEBUFFER_COMPLETE){t._destroyed=!0,r.bindFramebuffer(r.FRAMEBUFFER,null),r.deleteFramebuffer(t.handle),t.handle=null,t.depth&&(t.depth.dispose(),t.depth=null),t._depth_rb&&(r.deleteRenderbuffer(t._depth_rb),t._depth_rb=null);for(var m=0;m<t.color.length;++m)t.color[m].dispose(),t.color[m]=null;t._color_rb&&(r.deleteRenderbuffer(t._color_rb),t._color_rb=null),i(r,e),a(b)}i(r,e)}function c(t,e,r,n,i,o,a,s){this.gl=t,this._shape=[0|e,0|r],this._destroyed=!1,this._ext=s,this.color=new Array(i);for(var l=0;i>l;++l)this.color[l]=null;this._color_rb=null,this.depth=null,this._depth_rb=null,this._colorType=n,this._useDepth=o,this._useStencil=a;var c=this,h=[0|e,0|r];Object.defineProperties(h,{0:{get:function(){return c._shape[0]},set:function(t){return c.width=t}},1:{get:function(){return c._shape[1]},set:function(t){return c.height=t}}}),this._shapeVector=h,u(this)}function h(t,e,r){if(t._destroyed)throw new Error("gl-fbo: Can't resize destroyed FBO");if(t._shape[0]!==e||t._shape[1]!==r){var o=t.gl,s=o.getParameter(o.MAX_RENDERBUFFER_SIZE);if(0>e||e>s||0>r||r>s)throw new Error("gl-fbo: Can't resize FBO, invalid dimensions");t._shape[0]=e,t._shape[1]=r;for(var l=n(o),u=0;u<t.color.length;++u)t.color[u].shape=t._shape;t._color_rb&&(o.bindRenderbuffer(o.RENDERBUFFER,t._color_rb),o.renderbufferStorage(o.RENDERBUFFER,o.RGBA4,t._shape[0],t._shape[1])),t.depth&&(t.depth.shape=t._shape),t._depth_rb&&(o.bindRenderbuffer(o.RENDERBUFFER,t._depth_rb),t._useDepth&&t._useStencil?o.renderbufferStorage(o.RENDERBUFFER,o.DEPTH_STENCIL,t._shape[0],t._shape[1]):t._useDepth?o.renderbufferStorage(o.RENDERBUFFER,o.DEPTH_COMPONENT16,t._shape[0],t._shape[1]):t._useStencil&&o.renderbufferStorage(o.RENDERBUFFER,o.STENCIL_INDEX,t._shape[0],t._shape[1])),o.bindFramebuffer(o.FRAMEBUFFER,t.handle);var c=o.checkFramebufferStatus(o.FRAMEBUFFER);c!==o.FRAMEBUFFER_COMPLETE&&(t.dispose(),i(o,l),a(c)),i(o,l)}}function f(t,e,r,n){p||(p=t.FRAMEBUFFER_UNSUPPORTED,v=t.FRAMEBUFFER_INCOMPLETE_ATTACHMENT,m=t.FRAMEBUFFER_INCOMPLETE_DIMENSIONS,g=t.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT);var i=t.getExtension("WEBGL_draw_buffers");if(!y&&i&&o(t,i),Array.isArray(e)&&(n=r,r=0|e[1],e=0|e[0]),"number"!=typeof e)throw new Error("gl-fbo: Missing shape parameter");var a=t.getParameter(t.MAX_RENDERBUFFER_SIZE);if(0>e||e>a||0>r||r>a)throw new Error("gl-fbo: Parameters are too large for FBO");n=n||{};var s=1;if("color"in n){if(s=Math.max(0|n.color,0),0>s)throw new Error("gl-fbo: Must specify a nonnegative number of colors");if(s>1){if(!i)throw new Error("gl-fbo: Multiple draw buffer extension not supported");if(s>t.getParameter(i.MAX_COLOR_ATTACHMENTS_WEBGL))throw new Error("gl-fbo: Context does not support "+s+" draw buffers")}}var l=t.UNSIGNED_BYTE,u=t.getExtension("OES_texture_float");if(n.float&&s>0){if(!u)throw new Error("gl-fbo: Context does not support floating point textures");l=t.FLOAT}else n.preferFloat&&s>0&&u&&(l=t.FLOAT);var h=!0;"depth"in n&&(h=!!n.depth);var f=!1;return"stencil"in n&&(f=!!n.stencil),new c(t,e,r,l,s,h,f,i)}var d=t("gl-texture2d");e.exports=f;var p,v,m,g,y=null,b=c.prototype;Object.defineProperties(b,{shape:{get:function(){return this._destroyed?[0,0]:this._shapeVector},set:function(t){if(Array.isArray(t)||(t=[0|t,0|t]),2!==t.length)throw new Error("gl-fbo: Shape vector must be length 2");var e=0|t[0],r=0|t[1];return h(this,e,r),[e,r]},enumerable:!1},width:{get:function(){return this._destroyed?0:this._shape[0]},set:function(t){return t=0|t,h(this,t,this._shape[1]),t},enumerable:!1},height:{get:function(){return this._destroyed?0:this._shape[1]},set:function(t){return t=0|t,h(this,this._shape[0],t),t},enumerable:!1}}),b.bind=function(){if(!this._destroyed){var t=this.gl;t.bindFramebuffer(t.FRAMEBUFFER,this.handle),t.viewport(0,0,this._shape[0],this._shape[1])}},b.dispose=function(){if(!this._destroyed){this._destroyed=!0;var t=this.gl;t.deleteFramebuffer(this.handle),this.handle=null,this.depth&&(this.depth.dispose(),this.depth=null),this._depth_rb&&(t.deleteRenderbuffer(this._depth_rb),this._depth_rb=null);for(var e=0;e<this.color.length;++e)this.color[e].dispose(),this.color[e]=null;this._color_rb&&(t.deleteRenderbuffer(this._color_rb),this._color_rb=null)}}},{"gl-texture2d":228}],130:[function(t,e,r){r.lineVertex="precision mediump float;\n#define GLSLIFY 1\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\nvoid main() {\n  vec2 dir = (matrix * vec3(d, 0)).xy;\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = 0.5 * width *\n    normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n}\n",r.lineFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}\n",r.mitreVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 p;\n\nuniform mat3  matrix;\nuniform vec2 screenShape;\nuniform float radius;\n\nvoid main() {\n  vec3 pp = matrix * vec3(p, 1);\n  gl_Position  = vec4(pp.xy, 0, pp.z);\n  gl_PointSize = radius;\n}\n",r.mitreFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}\n",r.pickVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\nattribute vec4 pick0, pick1;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = width *\n    normalize(screenShape.yx * vec2(d.y, -d.x)) / screenShape.xy;\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}\n",r.pickFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}\n",r.fillVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 projectAxis;\nuniform float projectValue;\nuniform float depth;\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 p = base.xy / base.z;\n  if(d.y < 0.0 || (d.y == 0.0 && d.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}\n",r.fillFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n";
+-},{}],131:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s){this.plot=t,this.dashPattern=e,this.lineBuffer=r,this.pickBuffer=n,this.lineShader=i,this.mitreShader=o,this.fillShader=a,this.pickShader=s,this.usingDashes=!1,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.width=1,this.color=[0,0,1,1],this.fill=[!1,!1,!1,!1],this.fillColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.data=null,this.numPoints=0,this.vertCount=0,this.pickOffset=0,this.lodBuffer=[]}function i(t){return t.map(function(t){return t.slice()})}function o(t,e){var r=t.gl,i=s(r),o=s(r),u=l(r,[1,1]),c=a(r,h.lineVertex,h.lineFragment),f=a(r,h.mitreVertex,h.mitreFragment),d=a(r,h.fillVertex,h.fillFragment),p=a(r,h.pickVertex,h.pickFragment),v=new n(t,u,i,o,c,f,d,p);return t.addObject(v),v.update(e),v}e.exports=o;var a=t("gl-shader"),s=t("gl-buffer"),l=t("gl-texture2d"),u=t("ndarray"),c=t("typedarray-pool"),h=t("./lib/shaders"),f=n.prototype;f.draw=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0],r=[1,0],n=[-1,0],i=[0,1],o=[0,-1];return function(){var a=this.plot,s=this.color,l=this.width,u=(this.numPoints,this.bounds),c=this.vertCount;if(c){var h=a.gl,f=a.viewBox,d=a.dataBox,p=a.pixelRatio,v=u[2]-u[0],m=u[3]-u[1],g=d[2]-d[0],y=d[3]-d[1],b=f[2]-f[0],x=f[3]-f[1];t[0]=2*v/g,t[4]=2*m/y,t[6]=2*(u[0]-d[0])/g-1,t[7]=2*(u[1]-d[1])/y-1,e[0]=b,e[1]=x;var _=this.lineBuffer;_.bind();var w=this.fill;if(w[0]||w[1]||w[2]||w[3]){var M=this.fillShader;M.bind();var k=M.uniforms;k.matrix=t,k.depth=a.nextDepthValue();var A=M.attributes;A.a.pointer(h.FLOAT,!1,16,0),A.d.pointer(h.FLOAT,!1,16,8),h.depthMask(!0),h.enable(h.DEPTH_TEST);var T=this.fillColor;w[0]&&(k.color=T[0],k.projectAxis=n,k.projectValue=1,h.drawArrays(h.TRIANGLES,0,c)),w[1]&&(k.color=T[1],k.projectAxis=o,k.projectValue=1,h.drawArrays(h.TRIANGLES,0,c)),w[2]&&(k.color=T[2],k.projectAxis=r,k.projectValue=1,h.drawArrays(h.TRIANGLES,0,c)),w[3]&&(k.color=T[3],k.projectAxis=i,k.projectValue=1,h.drawArrays(h.TRIANGLES,0,c)),h.depthMask(!1),h.disable(h.DEPTH_TEST)}var E=this.lineShader;E.bind();var S=E.uniforms;S.matrix=t,S.color=s,S.width=l*p,S.screenShape=e,S.dashPattern=this.dashPattern.bind(),S.dashLength=this.dashLength*p;var L=E.attributes;if(L.a.pointer(h.FLOAT,!1,16,0),L.d.pointer(h.FLOAT,!1,16,8),h.drawArrays(h.TRIANGLES,0,c),l>2&&!this.usingDashes){var z=this.mitreShader;z.bind();var I=z.uniforms;I.matrix=t,I.color=s,I.screenShape=e,I.radius=l*p,z.attributes.p.pointer(h.FLOAT,!1,48,0),h.drawArrays(h.POINTS,0,c/3|0)}}}}(),f.drawPick=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0],r=[0,0,0,0];return function(n){var i=this.plot,o=this.pickShader,a=this.lineBuffer,s=this.pickBuffer,l=this.width,u=this.numPoints,c=this.bounds,h=this.vertCount,f=i.gl,d=i.viewBox,p=i.dataBox,v=i.pickPixelRatio,m=c[2]-c[0],g=c[3]-c[1],y=p[2]-p[0],b=p[3]-p[1],x=d[2]-d[0],_=d[3]-d[1];if(this.pickOffset=n,!h)return n+u;t[0]=2*m/y,t[4]=2*g/b,t[6]=2*(c[0]-p[0])/y-1,t[7]=2*(c[1]-p[1])/b-1,e[0]=x,e[1]=_,r[0]=255&n,r[1]=n>>>8&255,r[2]=n>>>16&255,r[3]=n>>>24,o.bind();var w=o.uniforms;w.matrix=t,w.width=l*v,w.pickOffset=r,w.screenShape=e;var M=o.attributes;return a.bind(),M.a.pointer(f.FLOAT,!1,16,0),M.d.pointer(f.FLOAT,!1,16,8),s.bind(),M.pick0.pointer(f.UNSIGNED_BYTE,!1,8,0),M.pick1.pointer(f.UNSIGNED_BYTE,!1,8,4),f.drawArrays(f.TRIANGLES,0,h),n+u}}(),f.pick=function(t,e,r){var n=this.pickOffset,i=this.numPoints;if(n>r||r>=n+i)return null;var o=r-n,a=this.data;return{object:this,pointId:o,dataCoord:[a[2*o],a[2*o+1]]}},f.update=function(t){t=t||{};var e=this.plot.gl;!!t.connectGaps;this.color=(t.color||[0,0,1,1]).slice(),this.width=+(t.width||1),this.fill=(t.fill||[!1,!1,!1,!1]).slice(),this.fillColor=i(t.fillColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]);for(var r=t.dashes||[1],n=0,o=0;o<r.length;++o)n+=r[o];for(var a=c.mallocUint8(n),s=0,h=255,o=0;o<r.length;++o){for(var f=0;f<r[o];++f)a[s++]=h;h^=255}this.dashPattern.dispose(),this.usingDashes=r.length>1,this.dashPattern=l(e,u(a,[n,1,4],[1,0,0])),this.dashPattern.minFilter=e.NEAREST,this.dashPattern.magFilter=e.NEAREST,this.dashLength=n,c.free(a);var d=t.positions;this.data=d;var p=this.bounds;p[0]=p[1]=1/0,p[2]=p[3]=-(1/0);var v=this.numPoints=d.length>>>1;if(0!==v){for(var o=0;v>o;++o){var m=d[2*o],g=d[2*o+1];isNaN(m)||isNaN(g)||(p[0]=Math.min(p[0],m),p[1]=Math.min(p[1],g),p[2]=Math.max(p[2],m),p[3]=Math.max(p[3],g))}p[0]===p[2]&&(p[2]+=1),p[3]===p[1]&&(p[3]+=1);for(var y=c.mallocFloat32(24*(v-1)),b=c.mallocUint32(12*(v-1)),x=y.length,_=b.length,s=v,w=0;s>1;){var M=--s,m=d[2*s],g=d[2*s+1],k=M-1,A=d[2*k],T=d[2*k+1];if(!(isNaN(m)||isNaN(g)||isNaN(A)||isNaN(T))){w+=1,m=(m-p[0])/(p[2]-p[0]),g=(g-p[1])/(p[3]-p[1]),A=(A-p[0])/(p[2]-p[0]),T=(T-p[1])/(p[3]-p[1]);var E=A-m,S=T-g,L=M|1<<24,z=M-1,I=M,P=M-1|1<<24;y[--x]=-S,y[--x]=-E,y[--x]=g,y[--x]=m,b[--_]=L,b[--_]=z,y[--x]=S,y[--x]=E,y[--x]=T,y[--x]=A,b[--_]=I,b[--_]=P,y[--x]=-S,y[--x]=-E,y[--x]=T,y[--x]=A,b[--_]=I,b[--_]=P,y[--x]=S,y[--x]=E,y[--x]=T,y[--x]=A,b[--_]=I,b[--_]=P,y[--x]=-S,y[--x]=-E,y[--x]=g,y[--x]=m,b[--_]=L,b[--_]=z,y[--x]=S,y[--x]=E,y[--x]=g,y[--x]=m,b[--_]=L,b[--_]=z}}this.vertCount=6*w,this.lineBuffer.update(y.subarray(x)),this.pickBuffer.update(b.subarray(_)),c.free(y),c.free(b)}},f.dispose=function(){this.plot.removeObject(this),this.lineBuffer.dispose(),this.pickBuffer.dispose(),this.lineShader.dispose(),this.mitreShader.dispose(),this.fillShader.dispose(),this.pickShader.dispose(),this.dashPattern.dispose()}},{"./lib/shaders":130,"gl-buffer":124,"gl-shader":203,"gl-texture2d":228,ndarray:433,"typedarray-pool":458}],132:[function(t,e,r){var n=t("gl-shader"),i="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, nextPosition;\nattribute float arcLength, lineWidth;\nattribute vec4 color;\n\nuniform vec2 screenShape;\nuniform float pixelRatio;\nuniform mat4 model, view, projection;\n\nvarying vec4 fragColor;\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\n\nvoid main() {\n  vec4 projected = projection * view * model * vec4(position, 1.0);\n  vec4 tangentClip = projection * view * model * vec4(nextPosition - position, 0.0);\n  vec2 tangent = normalize(screenShape * tangentClip.xy);\n  vec2 offset = 0.5 * pixelRatio * lineWidth * vec2(tangent.y, -tangent.x) / screenShape;\n\n  gl_Position = vec4(projected.xy + projected.w * offset, projected.zw);\n\n  worldPosition = position;\n  pixelArcLength = arcLength;\n  fragColor = color;\n}\n",o="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3      clipBounds[2];\nuniform sampler2D dashTexture;\nuniform float     dashScale;\nuniform float     opacity;\n\nvarying vec3    worldPosition;\nvarying float   pixelArcLength;\nvarying vec4    fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  float dashWeight = texture2D(dashTexture, vec2(dashScale * pixelArcLength, 0)).r;\n  if(dashWeight < 0.5) {\n    discard;\n  }\n  gl_FragColor = fragColor * opacity;\n}\n",a="precision mediump float;\n#define GLSLIFY 1\n\n#define FLOAT_MAX  1.70141184e38\n#define FLOAT_MIN  1.17549435e-38\n\nlowp vec4 encode_float_1_0(highp float v) {\n  highp float av = abs(v);\n\n  //Handle special cases\n  if(av < FLOAT_MIN) {\n    return vec4(0.0, 0.0, 0.0, 0.0);\n  } else if(v > FLOAT_MAX) {\n    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;\n  } else if(v < -FLOAT_MAX) {\n    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;\n  }\n\n  highp vec4 c = vec4(0,0,0,0);\n\n  //Compute exponent and mantissa\n  highp float e = floor(log2(av));\n  highp float m = av * pow(2.0, -e) - 1.0;\n  \n  //Unpack mantissa\n  c[1] = floor(128.0 * m);\n  m -= c[1] / 128.0;\n  c[2] = floor(32768.0 * m);\n  m -= c[2] / 32768.0;\n  c[3] = floor(8388608.0 * m);\n  \n  //Unpack exponent\n  highp float ebias = e + 127.0;\n  c[0] = floor(ebias / 2.0);\n  ebias -= c[0] * 2.0;\n  c[1] += floor(ebias) * 128.0; \n\n  //Unpack sign bit\n  c[0] += 128.0 * step(0.0, -v);\n\n  //Scale back to range\n  return c / 255.0;\n}\n\n\n\nuniform float pickId;\nuniform vec3 clipBounds[2];\n\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId/255.0, encode_float_1_0(pixelArcLength).xyz);\n}",s=[{name:"position",type:"vec3"},{name:"nextPosition",type:"vec3"},{name:"arcLength",type:"float"},{name:"lineWidth",type:"float"},{name:"color",type:"vec4"}];r.createShader=function(t){return n(t,i,o,null,s)},r.createPickShader=function(t){return n(t,i,a,null,s)}},{"gl-shader":203}],133:[function(t,e,r){"use strict";function n(t,e){for(var r=0,n=0;3>n;++n){var i=t[n]-e[n];r+=i*i}return Math.sqrt(r)}function i(t){for(var e=[[-1e6,-1e6,-1e6],[1e6,1e6,1e6]],r=0;3>r;++r)e[0][r]=Math.max(t[0][r],e[0][r]),e[1][r]=Math.min(t[1][r],e[1][r]);return e}function o(t,e,r,n){this.arcLength=t,this.position=e,this.index=r,this.dataCoordinate=n}function a(t,e,r,n,i,o){this.gl=t,this.shader=e,this.pickShader=r,this.buffer=n,this.vao=i,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.points=[],this.arcLength=[],this.vertexCount=0,this.bounds=[[0,0,0],[0,0,0]],this.pickId=0,this.lineWidth=1,this.texture=o,this.dashScale=1,this.opacity=1,this.dirty=!0,this.pixelRatio=1}function s(t){var e=t.gl||t.scene&&t.scene.gl,r=v(e);r.attributes.position.location=0,r.attributes.nextPosition.location=1,r.attributes.arcLength.location=2,r.attributes.lineWidth.location=3,r.attributes.color.location=4;var n=m(e);n.attributes.position.location=0,n.attributes.nextPosition.location=1,n.attributes.arcLength.location=2,n.attributes.lineWidth.location=3,n.attributes.color.location=4;for(var i=l(e),o=u(e,[{buffer:i,size:3,offset:0,stride:48},{buffer:i,size:3,offset:12,stride:48},{buffer:i,size:1,offset:24,stride:48},{buffer:i,size:1,offset:28,stride:48},{buffer:i,size:4,offset:32,stride:48}]),s=d(new Array(1024),[256,1,4]),h=0;1024>h;++h)s.data[h]=255;var f=c(e,s);f.wrap=e.REPEAT;var p=new a(e,r,n,i,o,f);return p.update(t),p}e.exports=s;var l=t("gl-buffer"),u=t("gl-vao"),c=t("gl-texture2d"),h=t("glsl-read-float"),f=t("binary-search-bounds"),d=t("ndarray"),p=t("./lib/shaders"),v=p.createShader,m=p.createPickShader,g=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],y=a.prototype;y.isTransparent=function(){return this.opacity<1},y.isOpaque=function(){return this.opacity>=1},y.pickSlots=1,y.setPickBase=function(t){this.pickId=t},y.drawTransparent=y.draw=function(t){var e=this.gl,r=this.shader,n=this.vao;r.bind(),r.uniforms={model:t.model||g,view:t.view||g,projection:t.projection||g,clipBounds:i(this.clipBounds),dashTexture:this.texture.bind(),dashScale:this.dashScale/this.arcLength[this.arcLength.length-1],opacity:this.opacity,screenShape:[e.drawingBufferWidth,e.drawingBufferHeight],pixelRatio:this.pixelRatio},n.bind(),n.draw(e.TRIANGLE_STRIP,this.vertexCount)},y.drawPick=function(t){var e=this.gl,r=this.pickShader,n=this.vao;r.bind(),r.uniforms={model:t.model||g,view:t.view||g,projection:t.projection||g,pickId:this.pickId,clipBounds:i(this.clipBounds),screenShape:[e.drawingBufferWidth,e.drawingBufferHeight],pixelRatio:this.pixelRatio},n.bind(),n.draw(e.TRIANGLE_STRIP,this.vertexCount)},y.update=function(t){var e,r;this.dirty=!0;var i=!!t.connectGaps;"dashScale"in t&&(this.dashScale=t.dashScale),"opacity"in t&&(this.opacity=+t.opacity);var o=t.position||t.positions;if(o){var a=t.color||t.colors||[0,0,0,1],s=t.lineWidth||1,l=[],u=[],c=[],h=0,p=0,v=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],m=!1;t:for(e=1;e<o.length;++e){var g=o[e-1],y=o[e];for(u.push(h),c.push(g.slice()),r=0;3>r;++r){if(isNaN(g[r])||isNaN(y[r])||!isFinite(g[r])||!isFinite(y[r])){if(!i&&l.length>0){for(var b=0;24>b;++b)l.push(l[l.length-12]);p+=2,m=!0}continue t}v[0][r]=Math.min(v[0][r],g[r],y[r]),v[1][r]=Math.max(v[1][r],g[r],y[r])}var x,_;Array.isArray(a[0])?(x=a[e-1],_=a[e]):x=_=a,3===x.length&&(x=[x[0],x[1],x[2],1]),3===_.length&&(_=[_[0],_[1],_[2],1]);var w;w=Array.isArray(s)?s[e-1]:s;var M=h;if(h+=n(g,y),m){for(r=0;2>r;++r)l.push(g[0],g[1],g[2],y[0],y[1],y[2],M,w,x[0],x[1],x[2],x[3]);p+=2,m=!1}l.push(g[0],g[1],g[2],y[0],y[1],y[2],M,w,x[0],x[1],x[2],x[3],g[0],g[1],g[2],y[0],y[1],y[2],M,-w,x[0],x[1],x[2],x[3],y[0],y[1],y[2],g[0],g[1],g[2],h,-w,_[0],_[1],_[2],_[3],y[0],y[1],y[2],g[0],g[1],g[2],h,w,_[0],_[1],_[2],_[3]),p+=4}if(this.buffer.update(l),u.push(h),c.push(o[o.length-1].slice()),this.bounds=v,this.vertexCount=p,this.points=c,this.arcLength=u,"dashes"in t){var k=t.dashes,A=k.slice();for(A.unshift(0),e=1;e<A.length;++e)A[e]=A[e-1]+A[e];var T=d(new Array(1024),[256,1,4]);for(e=0;256>e;++e){for(r=0;4>r;++r)T.set(e,0,r,0);1&f.le(A,A[A.length-1]*e/255)?T.set(e,0,0,0):T.set(e,0,0,255)}this.texture.setPixels(T)}}},y.dispose=function(){this.shader.dispose(),this.vao.dispose(),this.buffer.dispose()},y.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=h(t.value[0],t.value[1],t.value[2],0),r=f.le(this.arcLength,e);if(0>r)return null;if(r===this.arcLength.length-1)return new o(this.arcLength[this.arcLength.length-1],this.points[this.points.length-1].slice(),r);for(var n=this.points[r],i=this.points[Math.min(r+1,this.points.length-1)],a=(e-this.arcLength[r])/(this.arcLength[r+1]-this.arcLength[r]),s=1-a,l=[0,0,0],u=0;3>u;++u)l[u]=s*n[u]+a*i[u];var c=Math.min(.5>a?r:r+1,this.points.length-1);return new o(e,l,c,this.points[c])}},{"./lib/shaders":132,"binary-search-bounds":134,"gl-buffer":124,"gl-texture2d":228,"gl-vao":232,"glsl-read-float":135,ndarray:433}],134:[function(t,e,r){arguments[4][22][0].apply(r,arguments)},{dup:22}],135:[function(t,e,r){function n(t,e,r,n){return i[0]=n,i[1]=r,i[2]=e,i[3]=t,o[0]}e.exports=n;var i=new Uint8Array(4),o=new Float32Array(i.buffer)},{}],136:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],h=c*a-s*u,f=-c*o+s*l,d=u*o-a*l,p=r*h+n*f+i*d;return p?(p=1/p,t[0]=h*p,t[1]=(-c*n+i*u)*p,t[2]=(s*n-i*a)*p,t[3]=f*p,t[4]=(c*r-i*l)*p,t[5]=(-s*r+i*o)*p,t[6]=d*p,t[7]=(-u*r+n*l)*p,t[8]=(a*r-n*o)*p,t):null}e.exports=n},{}],137:[function(t,e,r){function n(t){var e=new Float32Array(16);return e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e[4]=t[4],e[5]=t[5],e[6]=t[6],e[7]=t[7],e[8]=t[8],e[9]=t[9],e[10]=t[10],e[11]=t[11],e[12]=t[12],e[13]=t[13],e[14]=t[14],e[15]=t[15],e}e.exports=n},{}],138:[function(t,e,r){function n(){var t=new Float32Array(16);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],139:[function(t,e,r){function n(t){var e=t[0],r=t[1],n=t[2],i=t[3],o=t[4],a=t[5],s=t[6],l=t[7],u=t[8],c=t[9],h=t[10],f=t[11],d=t[12],p=t[13],v=t[14],m=t[15],g=e*a-r*o,y=e*s-n*o,b=e*l-i*o,x=r*s-n*a,_=r*l-i*a,w=n*l-i*s,M=u*p-c*d,k=u*v-h*d,A=u*m-f*d,T=c*v-h*p,E=c*m-f*p,S=h*m-f*v;return g*S-y*E+b*T+x*A-_*k+w*M}e.exports=n},{}],140:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=r+r,s=n+n,l=i+i,u=r*a,c=n*a,h=n*s,f=i*a,d=i*s,p=i*l,v=o*a,m=o*s,g=o*l;return t[0]=1-h-p,t[1]=c+g,t[2]=f-m,t[3]=0,t[4]=c-g,t[5]=1-u-p,t[6]=d+v,t[7]=0,t[8]=f+m,t[9]=d-v,t[10]=1-u-h,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],141:[function(t,e,r){function n(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=n+n,l=i+i,u=o+o,c=n*s,h=n*l,f=n*u,d=i*l,p=i*u,v=o*u,m=a*s,g=a*l,y=a*u;return t[0]=1-(d+v),t[1]=h+y,t[2]=f-g,t[3]=0,t[4]=h-y,t[5]=1-(c+v),t[6]=p+m,t[7]=0,t[8]=f+g,t[9]=p-m,t[10]=1-(c+d),t[11]=0,t[12]=r[0],t[13]=r[1],t[14]=r[2],t[15]=1,t}e.exports=n},{}],142:[function(t,e,r){function n(t){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],143:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],h=e[9],f=e[10],d=e[11],p=e[12],v=e[13],m=e[14],g=e[15],y=r*s-n*a,b=r*l-i*a,x=r*u-o*a,_=n*l-i*s,w=n*u-o*s,M=i*u-o*l,k=c*v-h*p,A=c*m-f*p,T=c*g-d*p,E=h*m-f*v,S=h*g-d*v,L=f*g-d*m,z=y*L-b*S+x*E+_*T-w*A+M*k;return z?(z=1/z,t[0]=(s*L-l*S+u*E)*z,t[1]=(i*S-n*L-o*E)*z,t[2]=(v*M-m*w+g*_)*z,t[3]=(f*w-h*M-d*_)*z,t[4]=(l*T-a*L-u*A)*z,t[5]=(r*L-i*T+o*A)*z,t[6]=(m*x-p*M-g*b)*z,t[7]=(c*M-f*x+d*b)*z,t[8]=(a*S-s*T+u*k)*z,t[9]=(n*T-r*S-o*k)*z,t[10]=(p*w-v*x+g*y)*z,t[11]=(h*x-c*w-d*y)*z,t[12]=(s*A-a*E-l*k)*z,t[13]=(r*E-n*A+i*k)*z,t[14]=(v*b-p*_-m*y)*z,t[15]=(c*_-h*b+f*y)*z,t):null}e.exports=n},{}],144:[function(t,e,r){function n(t,e,r,n){var o,a,s,l,u,c,h,f,d,p,v=e[0],m=e[1],g=e[2],y=n[0],b=n[1],x=n[2],_=r[0],w=r[1],M=r[2];return Math.abs(v-_)<1e-6&&Math.abs(m-w)<1e-6&&Math.abs(g-M)<1e-6?i(t):(h=v-_,f=m-w,d=g-M,p=1/Math.sqrt(h*h+f*f+d*d),h*=p,f*=p,d*=p,o=b*d-x*f,a=x*h-y*d,s=y*f-b*h,p=Math.sqrt(o*o+a*a+s*s),p?(p=1/p,o*=p,a*=p,s*=p):(o=0,a=0,s=0),l=f*s-d*a,u=d*o-h*s,c=h*a-f*o,p=Math.sqrt(l*l+u*u+c*c),p?(p=1/p,l*=p,u*=p,c*=p):(l=0,u=0,c=0),t[0]=o,t[1]=l,t[2]=h,t[3]=0,t[4]=a,t[5]=u,t[6]=f,t[7]=0,t[8]=s,t[9]=c,t[10]=d,t[11]=0,t[12]=-(o*v+a*m+s*g),t[13]=-(l*v+u*m+c*g),t[14]=-(h*v+f*m+d*g),t[15]=1,t)}var i=t("./identity");e.exports=n},{"./identity":142}],145:[function(t,e,r){function n(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],h=e[8],f=e[9],d=e[10],p=e[11],v=e[12],m=e[13],g=e[14],y=e[15],b=r[0],x=r[1],_=r[2],w=r[3];return t[0]=b*n+x*s+_*h+w*v,t[1]=b*i+x*l+_*f+w*m,t[2]=b*o+x*u+_*d+w*g,t[3]=b*a+x*c+_*p+w*y,b=r[4],x=r[5],_=r[6],w=r[7],t[4]=b*n+x*s+_*h+w*v,t[5]=b*i+x*l+_*f+w*m,t[6]=b*o+x*u+_*d+w*g,t[7]=b*a+x*c+_*p+w*y,b=r[8],x=r[9],_=r[10],w=r[11],t[8]=b*n+x*s+_*h+w*v,t[9]=b*i+x*l+_*f+w*m,t[10]=b*o+x*u+_*d+w*g,t[11]=b*a+x*c+_*p+w*y,b=r[12],x=r[13],_=r[14],w=r[15],t[12]=b*n+x*s+_*h+w*v,t[13]=b*i+x*l+_*f+w*m,t[14]=b*o+x*u+_*d+w*g,t[15]=b*a+x*c+_*p+w*y,t}e.exports=n},{}],146:[function(t,e,r){function n(t,e,r,n,i){var o=1/Math.tan(e/2),a=1/(n-i);return t[0]=o/r,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=o,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=(i+n)*a,t[11]=-1,t[12]=0,t[13]=0,t[14]=2*i*n*a,t[15]=0,t}e.exports=n},{}],147:[function(t,e,r){function n(t,e,r,n){var i,o,a,s,l,u,c,h,f,d,p,v,m,g,y,b,x,_,w,M,k,A,T,E,S=n[0],L=n[1],z=n[2],I=Math.sqrt(S*S+L*L+z*z);return Math.abs(I)<1e-6?null:(I=1/I,S*=I,L*=I,z*=I,i=Math.sin(r),o=Math.cos(r),a=1-o,s=e[0],l=e[1],u=e[2],c=e[3],h=e[4],f=e[5],d=e[6],p=e[7],v=e[8],m=e[9],g=e[10],y=e[11],b=S*S*a+o,x=L*S*a+z*i,_=z*S*a-L*i,w=S*L*a-z*i,M=L*L*a+o,k=z*L*a+S*i,A=S*z*a+L*i,T=L*z*a-S*i,E=z*z*a+o,t[0]=s*b+h*x+v*_,t[1]=l*b+f*x+m*_,t[2]=u*b+d*x+g*_,t[3]=c*b+p*x+y*_,t[4]=s*w+h*M+v*k,t[5]=l*w+f*M+m*k,t[6]=u*w+d*M+g*k,t[7]=c*w+p*M+y*k,t[8]=s*A+h*T+v*E,t[9]=l*A+f*T+m*E,t[10]=u*A+d*T+g*E,t[11]=c*A+p*T+y*E,e!==t&&(t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t)}e.exports=n},{}],148:[function(t,e,r){function n(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[4],a=e[5],s=e[6],l=e[7],u=e[8],c=e[9],h=e[10],f=e[11];return e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[4]=o*i+u*n,t[5]=a*i+c*n,t[6]=s*i+h*n,t[7]=l*i+f*n,t[8]=u*i-o*n,t[9]=c*i-a*n,t[10]=h*i-s*n,t[11]=f*i-l*n,t}e.exports=n},{}],149:[function(t,e,r){function n(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[0],a=e[1],s=e[2],l=e[3],u=e[8],c=e[9],h=e[10],f=e[11];return e!==t&&(t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i-u*n,t[1]=a*i-c*n,t[2]=s*i-h*n,t[3]=l*i-f*n,t[8]=o*n+u*i,t[9]=a*n+c*i,t[10]=s*n+h*i,t[11]=l*n+f*i,t}e.exports=n},{}],150:[function(t,e,r){function n(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[0],a=e[1],s=e[2],l=e[3],u=e[4],c=e[5],h=e[6],f=e[7];return e!==t&&(t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i+u*n,t[1]=a*i+c*n,t[2]=s*i+h*n,t[3]=l*i+f*n,t[4]=u*i-o*n,t[5]=c*i-a*n,t[6]=h*i-s*n,t[7]=f*i-l*n,t}e.exports=n},{}],151:[function(t,e,r){function n(t,e,r){var n=r[0],i=r[1],o=r[2];return t[0]=e[0]*n,t[1]=e[1]*n,t[2]=e[2]*n,t[3]=e[3]*n,t[4]=e[4]*i,t[5]=e[5]*i,t[6]=e[6]*i,t[7]=e[7]*i,t[8]=e[8]*o,t[9]=e[9]*o,t[10]=e[10]*o,t[11]=e[11]*o,t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t}e.exports=n},{}],152:[function(t,e,r){function n(t,e,r){var n,i,o,a,s,l,u,c,h,f,d,p,v=r[0],m=r[1],g=r[2];return e===t?(t[12]=e[0]*v+e[4]*m+e[8]*g+e[12],t[13]=e[1]*v+e[5]*m+e[9]*g+e[13],t[14]=e[2]*v+e[6]*m+e[10]*g+e[14],t[15]=e[3]*v+e[7]*m+e[11]*g+e[15]):(n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],h=e[8],f=e[9],d=e[10],p=e[11],t[0]=n,t[1]=i,t[2]=o,t[3]=a,t[4]=s,t[5]=l,t[6]=u,t[7]=c,t[8]=h,t[9]=f,t[10]=d,t[11]=p,t[12]=n*v+s*m+h*g+e[12],t[13]=i*v+l*m+f*g+e[13],t[14]=o*v+u*m+d*g+e[14],t[15]=a*v+c*m+p*g+e[15]),t}e.exports=n},{}],153:[function(t,e,r){function n(t,e){if(t===e){var r=e[1],n=e[2],i=e[3],o=e[6],a=e[7],s=e[11];t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=r,t[6]=e[9],t[7]=e[13],t[8]=n,t[9]=o,t[11]=e[14],t[12]=i,t[13]=a,t[14]=s}else t[0]=e[0],t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=e[1],t[5]=e[5],t[6]=e[9],t[7]=e[13],t[8]=e[2],t[9]=e[6],t[10]=e[10],t[11]=e[14],t[12]=e[3],t[13]=e[7],t[14]=e[11],t[15]=e[15];return t}e.exports=n},{}],154:[function(t,e,r){"use strict";function n(t,e){for(var r=[0,0,0,0],n=0;4>n;++n)for(var i=0;4>i;++i)r[i]+=t[4*n+i]*e[n];return r}function i(t,e,r,i,o){for(var a=n(i,n(r,n(e,[t[0],t[1],t[2],1]))),s=0;3>s;++s)a[s]/=a[3];return[.5*o[0]*(1+a[0]),.5*o[1]*(1-a[1])]}function o(t,e){if(2===t.length){for(var r=0,n=0,i=0;2>i;++i)r+=Math.pow(e[i]-t[0][i],2),n+=Math.pow(e[i]-t[1][i],2);return r=Math.sqrt(r),n=Math.sqrt(n),1e-6>r+n?[1,0]:[n/(r+n),r/(n+r)]}if(3===t.length){var o=[0,0];return u(t[0],t[1],t[2],e,o),l(t,o)}return[]}function a(t,e){for(var r=[0,0,0],n=0;n<t.length;++n)for(var i=t[n],o=e[n],a=0;3>a;++a)r[a]+=o*i[a];return r}function s(t,e,r,n,s,l){if(1===t.length)return[0,t[0].slice()];for(var u=new Array(t.length),c=0;c<t.length;++c)u[c]=i(t[c],r,n,s,l);for(var h=0,f=1/0,c=0;c<u.length;++c){for(var d=0,p=0;2>p;++p)d+=Math.pow(u[c][p]-e[p],2);f>d&&(f=d,h=c)}for(var v=o(u,e),m=0,c=0;3>c;++c){if(v[c]<-.001||v[c]>1.0001)return null;m+=v[c]}return Math.abs(m-1)>.001?null:[h,a(t,v),v]}var l=t("barycentric"),u=t("polytope-closest-point/lib/closest_point_2d.js");e.exports=s},{barycentric:157,"polytope-closest-point/lib/closest_point_2d.js":159}],155:[function(t,e,r){var n="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, normal;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model\n           , view\n           , projection;\nuniform vec3 eyePosition\n           , lightPosition;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec4 m_position  = model * vec4(position, 1.0);\n  vec4 t_position  = view * m_position;\n  gl_Position      = projection * t_position;\n  f_color          = color;\n  f_normal         = normal;\n  f_data           = position;\n  f_eyeDirection   = eyePosition   - position;\n  f_lightDirection = lightPosition - position;\n  f_uv             = uv;\n}",i="precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat cookTorranceSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness,\n  float fresnel) {\n\n  float VdotN = max(dot(viewDirection, surfaceNormal), 0.0);\n  float LdotN = max(dot(lightDirection, surfaceNormal), 0.0);\n\n  //Half angle vector\n  vec3 H = normalize(lightDirection + viewDirection);\n\n  //Geometric term\n  float NdotH = max(dot(surfaceNormal, H), 0.0);\n  float VdotH = max(dot(viewDirection, H), 0.000001);\n  float LdotH = max(dot(lightDirection, H), 0.000001);\n  float G1 = (2.0 * NdotH * VdotN) / VdotH;\n  float G2 = (2.0 * NdotH * LdotN) / LdotH;\n  float G = min(1.0, min(G1, G2));\n  \n  //Distribution term\n  float D = beckmannDistribution_2_0(NdotH, roughness);\n\n  //Fresnel term\n  float F = pow(1.0 - VdotN, fresnel);\n\n  //Multiply terms and done\n  return  G * F * D / max(3.14159265 * VdotN, 0.000001);\n}\n\n\n\nuniform vec3 clipBounds[2];\nuniform float roughness\n            , fresnel\n            , kambient\n            , kdiffuse\n            , kspecular\n            , opacity;\nuniform sampler2D texture;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(f_normal);\n  vec3 L = normalize(f_lightDirection);\n  vec3 V = normalize(f_eyeDirection);\n  \n  if(!gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = cookTorranceSpecular_1_1(L, V, N, roughness, fresnel);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = f_color * texture2D(texture, f_uv);\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = litColor * opacity;\n}",o="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model, view, projection;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_color = color;\n  f_data  = position;\n  f_uv    = uv;\n}",a="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 clipBounds[2];\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}",s="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\nattribute float pointSize;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position = projection * view * model * vec4(position, 1.0);\n  }\n  gl_PointSize = pointSize;\n  f_color = color;\n  f_uv = uv;\n}",l="precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec2 pointR = gl_PointCoord.xy - vec2(0.5,0.5);\n  if(dot(pointR, pointR) > 0.25) {\n    discard;\n  }\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}",u="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_id        = id;\n  f_position  = position;\n}",c="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3  clipBounds[2];\nuniform float pickId;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(f_position, clipBounds[0])) || \n     any(greaterThan(f_position, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId, f_id.xyz);\n}",h="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3  position;\nattribute float pointSize;\nattribute vec4  id;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position  = projection * view * model * vec4(position, 1.0);\n    gl_PointSize = pointSize;\n  }\n  f_id         = id;\n  f_position   = position;\n}",f="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n}",d="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 contourColor;\n\nvoid main() {\n  gl_FragColor = vec4(contourColor,1);\n}\n";r.meshShader={vertex:n,fragment:i,attributes:[{name:"position",type:"vec3"},{name:"normal",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"}]},r.wireShader={vertex:o,fragment:a,attributes:[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"}]},r.pointShader={vertex:s,fragment:l,attributes:[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"},{name:"pointSize",type:"float"}]},r.pickShader={vertex:u,fragment:c,attributes:[{name:"position",type:"vec3"},{name:"id",type:"vec4"}]},r.pointPickShader={vertex:h,fragment:c,attributes:[{name:"position",type:"vec3"},{name:"pointSize",type:"float"},{name:"id",type:"vec4"}]},r.contourShader={vertex:f,fragment:d,attributes:[{name:"position",type:"vec3"}]}},{}],156:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s,l,u,c,h,f,d,p,v,m,g,y,b,x,_,w,M,k,A,T){this.gl=t,this.cells=[],this.positions=[],this.intensity=[],this.texture=e,this.dirty=!0,this.triShader=r,this.lineShader=n,this.pointShader=i,this.pickShader=o,this.pointPickShader=a,this.contourShader=s,this.trianglePositions=l,this.triangleColors=c,this.triangleNormals=f,this.triangleUVs=h,this.triangleIds=u,this.triangleVAO=d,this.triangleCount=0,this.lineWidth=1,this.edgePositions=p,this.edgeColors=m,this.edgeUVs=g,this.edgeIds=v,this.edgeVAO=y,this.edgeCount=0,this.pointPositions=b,this.pointColors=_,this.pointUVs=w,this.pointSizes=M,this.pointIds=x,this.pointVAO=k,this.pointCount=0,this.contourLineWidth=1,this.contourPositions=A,this.contourVAO=T,this.contourCount=0,this.contourColor=[0,0,0],this.contourEnable=!0,this.pickId=1,this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.lightPosition=[1e5,1e5,0],this.ambientLight=.8,this.diffuseLight=.8,this.specularLight=2,this.roughness=.5,this.fresnel=1.5,this.opacity=1,this._model=D,this._view=D,this._projection=D,this._resolution=[1,1]}function i(t){for(var e=k({colormap:t,nshades:256,format:"rgba"}),r=new Uint8Array(1024),n=0;256>n;++n){for(var i=e[n],o=0;3>o;++o)r[4*n+o]=i[o];r[4*n+3]=255*i[3]}return M(r,[256,256,4],[4,0,1])}function o(t,e,r){for(var n=new Array(e),i=0;e>i;++i)n[i]=0;for(var o=t.length,i=0;o>i;++i)for(var a=t[i],s=0;s<a.length;++s)n[a[s]]=r[i];return n}function a(t){for(var e=t.length,r=new Array(e),n=0;e>n;++n)r[n]=t[n][2];return r}function s(t){var e=m(t,L);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e.attributes.normal.location=4,e}function l(t){var e=m(t,z);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e}function u(t){var e=m(t,I);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e.attributes.pointSize.location=4,e}function c(t){var e=m(t,P);return e.attributes.position.location=0,e.attributes.id.location=1,e}function h(t){var e=m(t,C);return 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t&&(this.specularLight=t.specular),"roughness"in t&&(this.roughness=t.roughness),"fresnel"in t&&(this.fresnel=t.fresnel),t.texture?(this.texture.dispose(),this.texture=b(e,t.texture)):t.colormap&&(this.texture.shape=[256,256],this.texture.minFilter=e.LINEAR_MIPMAP_LINEAR,this.texture.magFilter=e.LINEAR,this.texture.setPixels(i(t.colormap)),this.texture.generateMipmap());var r=t.cells,n=t.positions;if(n&&r){var s=[],l=[],u=[],c=[],h=[],f=[],d=[],m=[],g=[],y=[],_=[],w=[],M=[],k=[];this.cells=r,this.positions=n;var A=t.vertexNormals,T=t.cellNormals,E=void 0===t.vertexNormalsEpsilon?p:t.vertexNormalsEpsilon,S=void 0===t.faceNormalsEpsilon?v:t.faceNormalsEpsilon;t.useFacetNormals&&!T&&(T=x.faceNormals(r,n,S)),T||A||(A=x.vertexNormals(r,n,E));var L=t.vertexColors,z=t.cellColors,I=t.meshColor||[1,1,1,1],P=t.vertexUVs,C=t.vertexIntensity,R=t.cellUVs,D=t.cellIntensity,O=1/0,F=-(1/0);if(!P&&!R)if(C)for(var j=0;j<C.length;++j){var N=C[j];O=Math.min(O,N),F=Math.max(F,N)}else if(D)for(var 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u=l[15],a=0;3>a;++a)u+=this.lightPosition[a]*l[4*a+3];for(var a=0;3>a;++a){for(var c=l[12+a],h=0;3>h;++h)c+=l[4*h+a]*this.lightPosition[h];s.lightPosition[a]=c/u}if(this.triangleCount>0){var f=this.triShader;f.bind(),f.uniforms=s,this.triangleVAO.bind(),e.drawArrays(e.TRIANGLES,0,3*this.triangleCount),this.triangleVAO.unbind()}if(this.edgeCount>0&&this.lineWidth>0){var f=this.lineShader;f.bind(),f.uniforms=s,this.edgeVAO.bind(),e.lineWidth(this.lineWidth),e.drawArrays(e.LINES,0,2*this.edgeCount),this.edgeVAO.unbind()}if(this.pointCount>0){var f=this.pointShader;f.bind(),f.uniforms=s,this.pointVAO.bind(),e.drawArrays(e.POINTS,0,this.pointCount),this.pointVAO.unbind()}if(this.contourEnable&&this.contourCount>0&&this.contourLineWidth>0){var f=this.contourShader;f.bind(),f.uniforms=s,this.contourVAO.bind(),e.drawArrays(e.LINES,0,this.contourCount),this.contourVAO.unbind()}},O.drawPick=function(t){t=t||{};for(var e=this.gl,r=t.model||D,n=t.view||D,i=t.projection||D,o=[[-1e6,-1e6,-1e6],[1e6,1e6,1e6]],a=0;3>a;++a)o[0][a]=Math.max(o[0][a],this.clipBounds[0][a]),o[1][a]=Math.min(o[1][a],this.clipBounds[1][a]);this._model=[].slice.call(r),this._view=[].slice.call(n),this._projection=[].slice.call(i),this._resolution=[e.drawingBufferWidth,e.drawingBufferHeight];var s={model:r,view:n,projection:i,clipBounds:o,pickId:this.pickId/255},l=this.pickShader;if(l.bind(),l.uniforms=s,this.triangleCount>0&&(this.triangleVAO.bind(),e.drawArrays(e.TRIANGLES,0,3*this.triangleCount),this.triangleVAO.unbind()),this.edgeCount>0&&(this.edgeVAO.bind(),e.lineWidth(this.lineWidth),e.drawArrays(e.LINES,0,2*this.edgeCount),this.edgeVAO.unbind()),this.pointCount>0){var l=this.pointPickShader;l.bind(),l.uniforms=s,this.pointVAO.bind(),e.drawArrays(e.POINTS,0,this.pointCount),this.pointVAO.unbind()}},O.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;for(var e=t.value[0]+256*t.value[1]+65536*t.value[2],r=this.cells[e],n=this.positions,i=new Array(r.length),o=0;o<r.length;++o)i[o]=n[r[o]];var a=S(i,[t.coord[0],this._resolution[1]-t.coord[1]],this._model,this._view,this._projection,this._resolution);if(!a)return null;for(var s=a[2],l=0,o=0;o<r.length;++o)l+=s[o]*this.intensity[r[o]];return{position:a[1],index:r[a[0]],cell:r,cellId:e,intensity:l,dataCoordinate:this.positions[r[a[0]]]}},O.dispose=function(){this.texture.dispose(),this.triShader.dispose(),this.lineShader.dispose(),this.pointShader.dispose(),this.pickShader.dispose(),this.pointPickShader.dispose(),this.triangleVAO.dispose(),this.trianglePositions.dispose(),this.triangleColors.dispose(),this.triangleUVs.dispose(),this.triangleNormals.dispose(),this.triangleIds.dispose(),this.edgeVAO.dispose(),this.edgePositions.dispose(),this.edgeColors.dispose(),this.edgeUVs.dispose(),this.edgeIds.dispose(),this.pointVAO.dispose(),this.pointPositions.dispose(),this.pointColors.dispose(),this.pointUVs.dispose(),this.pointSizes.dispose(),this.pointIds.dispose(),this.contourVAO.dispose(),this.contourPositions.dispose(),this.contourShader.dispose()},e.exports=d},{"./lib/closest-point":154,"./lib/shaders":155,colormap:106,"gl-buffer":124,"gl-mat4/invert":143,"gl-mat4/multiply":145,"gl-shader":203,"gl-texture2d":228,"gl-vao":232,ndarray:433,normals:158,"simplicial-complex-contour":160,"typedarray-pool":458}],157:[function(t,e,r){"use 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s=0;i>s;++s){for(var _=o[s],A=0,x=0;3>x;++x)A+=_[x]*_[x];if(A>a)for(var w=1/Math.sqrt(A),x=0;3>x;++x)_[x]*=w;else for(var x=0;3>x;++x)_[x]=0}return o},r.faceNormals=function(t,e,r){for(var n=t.length,o=new Array(n),a=void 0===r?i:r,s=0;n>s;++s){for(var l=t[s],u=new Array(3),c=0;3>c;++c)u[c]=e[l[c]];for(var h=new Array(3),f=new Array(3),c=0;3>c;++c)h[c]=u[1][c]-u[0][c],f[c]=u[2][c]-u[0][c];for(var d=new Array(3),p=0,c=0;3>c;++c){var v=(c+1)%3,m=(c+2)%3;d[c]=h[v]*f[m]-h[m]*f[v],p+=d[c]*d[c]}p=p>a?1/Math.sqrt(p):0;for(var c=0;3>c;++c)d[c]*=p;o[s]=d}return o}},{}],159:[function(t,e,r){"use strict";function n(t,e,r,n,s){i.length<n.length&&(i=new Float64Array(n.length),o=new Float64Array(n.length),a=new Float64Array(n.length));for(var l=0;l<n.length;++l)i[l]=t[l]-n[l],o[l]=e[l]-t[l],a[l]=r[l]-t[l];for(var u=0,c=0,h=0,f=0,d=0,p=0,l=0;l<n.length;++l){var v=o[l],m=a[l],g=i[l];u+=v*v,c+=v*m,h+=m*m,f+=g*v,d+=g*m,p+=g*g}var 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n=this.viewBox,a=(n[2]-n[0])/(n[3]-n[1]);this.setDataBox(t.dataBox||[-10,-10/a,10,10/a]),this.borderColor=(t.borderColor||[0,0,0,0]).slice(),this.backgroundColor=(t.backgroundColor||[0,0,0,0]).slice(),this.gridLineEnable=(t.gridLineEnable||[!0,!0]).slice(),this.gridLineWidth=(t.gridLineWidth||[1,1]).slice(),this.gridLineColor=i(t.gridLineColor||[[.5,.5,.5,1],[.5,.5,.5,1]]),this.zeroLineEnable=(t.zeroLineEnable||[!0,!0]).slice(),this.zeroLineWidth=(t.zeroLineWidth||[4,4]).slice(),this.zeroLineColor=i(t.zeroLineColor||[[0,0,0,1],[0,0,0,1]]),this.tickMarkLength=(t.tickMarkLength||[0,0,0,0]).slice(),this.tickMarkWidth=(t.tickMarkWidth||[0,0,0,0]).slice(),this.tickMarkColor=i(t.tickMarkColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]),this.titleCenter=(t.titleCenter||[.5*(n[0]+n[2])/r,(n[3]+120)/r]).slice(),this.titleEnable=!("titleEnable"in 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r,n=e.bind(this,!1,Number),i=e.bind(this,!1,Boolean),o=e.bind(this,!1,String),a=e.bind(this,!0,function(t){if(Array.isArray(t)){if(3===t.length)return[+t[0],+t[1],+t[2],1];if(4===t.length)return[+t[0],+t[1],+t[2],+t[3]]}return[0,0,0,1]}),s=!1,c=!1;if("bounds"in t)for(var h=t.bounds,d=0;2>d;++d)for(var p=0;3>p;++p)h[d][p]!==this.bounds[d][p]&&(c=!0),this.bounds[d][p]=h[d][p];if("ticks"in t){r=t.ticks,s=!0,this.autoTicks=!1;for(var d=0;3>d;++d)this.tickSpacing[d]=0}else n("tickSpacing")&&(this.autoTicks=!0,c=!0);if(this._firstInit&&("ticks"in t||"tickSpacing"in t||(this.autoTicks=!0),c=!0,s=!0,this._firstInit=!1),c&&this.autoTicks&&(r=f.create(this.bounds,this.tickSpacing),s=!0),s){for(var d=0;3>d;++d)r[d].sort(function(t,e){return t.x-e.x});f.equal(r,this.ticks)?s=!1:this.ticks=r}i("tickEnable"),o("tickFont")&&(s=!0),n("tickSize"),n("tickAngle"),n("tickPad"),a("tickColor");var v=o("labels");o("labelFont")&&(v=!0),i("labelEnable"),n("labelSize"),n("labelPad"),a("labelColor"),i("lineEnable"),i("lineMirror"),n("lineWidth"),a("lineColor"),i("lineTickEnable"),i("lineTickMirror"),n("lineTickLength"),n("lineTickWidth"),a("lineTickColor"),i("gridEnable"),n("gridWidth"),a("gridColor"),i("zeroEnable"),a("zeroLineColor"),n("zeroLineWidth"),i("backgroundEnable"),a("backgroundColor"),this._text?this._text&&(v||s)&&this._text.update(this.bounds,this.labels,this.labelFont,this.ticks,this.tickFont):this._text=l(this.gl,this.bounds,this.labels,this.labelFont,this.ticks,this.tickFont),this._lines&&s&&(this._lines.dispose(),this._lines=null),this._lines||(this._lines=u(this.gl,this.bounds,this.ticks))};var v=[new o,new o,new o],m=[0,0,0],g={model:d,view:d,projection:d};p.isOpaque=function(){return!0},p.isTransparent=function(){return!1},p.drawTransparent=function(t){};var y=[0,0,0],b=[0,0,0],x=[0,0,0];p.draw=function(t){t=t||g;for(var e=this.gl,r=t.model||d,i=t.view||d,o=t.projection||d,s=this.bounds,l=h(r,i,o,s),u=l.cubeEdges,c=l.axis,f=i[12],p=i[13],_=i[14],w=i[15],M=this.pixelRatio*(o[3]*f+o[7]*p+o[11]*_+o[15]*w)/e.drawingBufferHeight,k=0;3>k;++k)this.lastCubeProps.cubeEdges[k]=u[k],this.lastCubeProps.axis[k]=c[k];for(var A=v,k=0;3>k;++k)a(v[k],k,this.bounds,u,c);for(var e=this.gl,T=m,k=0;3>k;++k)this.backgroundEnable[k]?T[k]=c[k]:T[k]=0;this._background.draw(r,i,o,s,T,this.backgroundColor),this._lines.bind(r,i,o,this);for(var k=0;3>k;++k){var E=[0,0,0];c[k]>0?E[k]=s[1][k]:E[k]=s[0][k];for(var S=0;2>S;++S){var L=(k+1+S)%3,z=(k+1+(1^S))%3;this.gridEnable[L]&&this._lines.drawGrid(L,z,this.bounds,E,this.gridColor[L],this.gridWidth[L]*this.pixelRatio)}for(var S=0;2>S;++S){var L=(k+1+S)%3,z=(k+1+(1^S))%3;this.zeroEnable[z]&&s[0][z]<=0&&s[1][z]>=0&&this._lines.drawZero(L,z,this.bounds,E,this.zeroLineColor[z],this.zeroLineWidth[z]*this.pixelRatio)}}for(var k=0;3>k;++k){this.lineEnable[k]&&this._lines.drawAxisLine(k,this.bounds,A[k].primalOffset,this.lineColor[k],this.lineWidth[k]*this.pixelRatio),this.lineMirror[k]&&this._lines.drawAxisLine(k,this.bounds,A[k].mirrorOffset,this.lineColor[k],this.lineWidth[k]*this.pixelRatio);for(var I=n(y,A[k].primalMinor),P=n(b,A[k].mirrorMinor),C=this.lineTickLength,S=0;3>S;++S){var R=M/r[5*S];I[S]*=C[S]*R,P[S]*=C[S]*R}this.lineTickEnable[k]&&this._lines.drawAxisTicks(k,A[k].primalOffset,I,this.lineTickColor[k],this.lineTickWidth[k]*this.pixelRatio),this.lineTickMirror[k]&&this._lines.drawAxisTicks(k,A[k].mirrorOffset,P,this.lineTickColor[k],this.lineTickWidth[k]*this.pixelRatio)}this._text.bind(r,i,o,this.pixelRatio);for(var k=0;3>k;++k){for(var D=A[k].primalMinor,O=n(x,A[k].primalOffset),S=0;3>S;++S)this.lineTickEnable[k]&&(O[S]+=M*D[S]*Math.max(this.lineTickLength[S],0)/r[5*S]);if(this.tickEnable[k]){for(var S=0;3>S;++S)O[S]+=M*D[S]*this.tickPad[S]/r[5*S];this._text.drawTicks(k,this.tickSize[k],this.tickAngle[k],O,this.tickColor[k])}if(this.labelEnable[k]){for(var S=0;3>S;++S)O[S]+=M*D[S]*this.labelPad[S]/r[5*S];O[k]+=.5*(s[0][k]+s[1][k]),this._text.drawLabel(k,this.labelSize[k],this.labelAngle[k],O,this.labelColor[k])}}},p.dispose=function(){this._text.dispose(),this._lines.dispose(),this._background.dispose(),this._lines=null,this._text=null,this._background=null,this.gl=null}},{"./lib/background.js":177,"./lib/cube.js":178,"./lib/lines.js":179,"./lib/text.js":181,"./lib/ticks.js":182}],177:[function(t,e,r){"use strict";function n(t,e,r,n){this.gl=t,this.buffer=e,this.vao=r,this.shader=n}function i(t){for(var e=[],r=[],i=0,l=0;3>l;++l)for(var u=(l+1)%3,c=(l+2)%3,h=[0,0,0],f=[0,0,0],d=-1;1>=d;d+=2){r.push(i,i+2,i+1,i+1,i+2,i+3),h[l]=d,f[l]=d;for(var p=-1;1>=p;p+=2){h[u]=p;for(var v=-1;1>=v;v+=2)h[c]=v,e.push(h[0],h[1],h[2],f[0],f[1],f[2]),i+=1}var m=u;u=c,c=m}var g=o(t,new Float32Array(e)),y=o(t,new Uint16Array(r),t.ELEMENT_ARRAY_BUFFER),b=a(t,[{buffer:g,type:t.FLOAT,size:3,offset:0,stride:24},{buffer:g,type:t.FLOAT,size:3,offset:12,stride:24}],y),x=s(t);return x.attributes.position.location=0,x.attributes.normal.location=1,new n(t,g,b,x)}e.exports=i;var o=t("gl-buffer"),a=t("gl-vao"),s=t("./shaders").bg,l=n.prototype;l.draw=function(t,e,r,n,i,o){for(var a=!1,s=0;3>s;++s)a=a||i[s];if(a){var l=this.gl;l.enable(l.POLYGON_OFFSET_FILL),l.polygonOffset(1,2),this.shader.bind(),this.shader.uniforms={model:t,view:e,projection:r,bounds:n,enable:i,colors:o},this.vao.bind(),this.vao.draw(this.gl.TRIANGLES,36),l.disable(l.POLYGON_OFFSET_FILL)}},l.dispose=function(){this.vao.dispose(),this.buffer.dispose(),this.shader.dispose()}},{"./shaders":180,"gl-buffer":124,"gl-vao":232}],178:[function(t,e,r){"use strict";function n(t,e,r){for(var n=0;4>n;++n){t[n]=r[12+n];for(var i=0;3>i;++i)t[n]+=e[i]*r[4*i+n]}}function i(t){for(var e=0;e<v.length;++e)if(t=l.positive(t,v[e]),t.length<3)return 0;for(var r=t[0],n=r[0]/r[3],i=r[1]/r[3],o=0,e=1;e+1<t.length;++e){var a=t[e],s=t[e+1],u=a[0]/a[3],c=a[1]/a[3],h=s[0]/s[3],f=s[1]/s[3],d=u-n,p=c-i,m=h-n,g=f-i;o+=Math.abs(d*g-p*m)}return o}function o(t,e,r,o){s(c,e,t),s(c,r,c);for(var l=0,v=0;2>v;++v){d[2]=o[v][2];for(var b=0;2>b;++b){d[1]=o[b][1];for(var x=0;2>x;++x)d[0]=o[x][0],n(h[l],d,c),l+=1}}for(var _=-1,v=0;8>v;++v){for(var w=h[v][3],M=0;3>M;++M)f[v][M]=h[v][M]/w;0>w&&(0>_?_=v:f[v][2]<f[_][2]&&(_=v))}if(0>_){_=0;for(var k=0;3>k;++k){for(var A=(k+2)%3,T=(k+1)%3,E=-1,S=-1,L=0;2>L;++L){var z=L<<k,I=z+(L<<A)+(1-L<<T),P=z+(1-L<<A)+(L<<T);u(f[z],f[I],f[P],p)<0||(L?E=1:S=1)}if(0>E||0>S)S>E&&(_|=1<<k);else{for(var L=0;2>L;++L){var z=L<<k,I=z+(L<<A)+(1-L<<T),P=z+(1-L<<A)+(L<<T),C=i([h[z],h[I],h[P],h[z+(1<<A)+(1<<T)]]);L?E=C:S=C}S>E&&(_|=1<<k)}}}for(var R=7^_,D=-1,v=0;8>v;++v)v!==_&&v!==R&&(0>D?D=v:f[D][1]>f[v][1]&&(D=v));for(var O=-1,v=0;3>v;++v){var F=D^1<<v;if(F!==_&&F!==R){0>O&&(O=F);var T=f[F];T[0]<f[O][0]&&(O=F)}}for(var j=-1,v=0;3>v;++v){var F=D^1<<v;if(F!==_&&F!==R&&F!==O){0>j&&(j=F);var T=f[F];T[0]>f[j][0]&&(j=F)}}var N=m;N[0]=N[1]=N[2]=0,N[a.log2(O^D)]=D&O,N[a.log2(D^j)]=D&j;var B=7^j;B===_||B===R?(B=7^O,N[a.log2(j^B)]=B&j):N[a.log2(O^B)]=B&O;for(var U=g,V=_,k=0;3>k;++k)V&1<<k?U[k]=-1:U[k]=1;return y}e.exports=o;var a=t("bit-twiddle"),s=t("gl-mat4/multiply"),l=(t("gl-mat4/invert"),t("split-polygon")),u=t("robust-orientation"),c=new Array(16),h=(new Array(16),new Array(8)),f=new Array(8),d=new Array(3),p=[0,0,0];!function(){for(var t=0;8>t;++t)h[t]=[1,1,1,1],f[t]=[1,1,1]}();var v=[[0,0,1,0,0],[0,0,-1,1,0],[0,-1,0,1,0],[0,1,0,1,0],[-1,0,0,1,0],[1,0,0,1,0]],m=[1,1,1],g=[0,0,0],y={cubeEdges:m,axis:g}},{"bit-twiddle":51,"gl-mat4/invert":143,"gl-mat4/multiply":145,"robust-orientation":439,"split-polygon":184}],179:[function(t,e,r){"use strict";function n(t){return t[0]=t[1]=t[2]=0,t}function i(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t}function o(t,e,r,n,i,o,a,s){this.gl=t,this.vertBuffer=e,this.vao=r,this.shader=n,this.tickCount=i,this.tickOffset=o,this.gridCount=a,this.gridOffset=s}function a(t,e,r){var n=[],i=[0,0,0],a=[0,0,0],c=[0,0,0],h=[0,0,0];n.push(0,0,1,0,1,1,0,0,-1,0,0,-1,0,1,1,0,1,-1);for(var f=0;3>f;++f){for(var d=n.length/3|0,p=0;p<r[f].length;++p){var v=+r[f][p].x;n.push(v,0,1,v,1,1,v,0,-1,v,0,-1,v,1,1,v,1,-1)}var m=n.length/3|0;i[f]=d,a[f]=m-d;for(var d=n.length/3|0,g=0;g<r[f].length;++g){var v=+r[f][g].x;n.push(v,0,1,v,1,1,v,0,-1,v,0,-1,v,1,1,v,1,-1)}var m=n.length/3|0;c[f]=d,h[f]=m-d}var y=s(t,new Float32Array(n)),b=l(t,[{buffer:y,type:t.FLOAT,size:3,stride:0,offset:0}]),x=u(t);return x.attributes.position.location=0,new o(t,y,b,x,a,i,h,c)}e.exports=a;var s=t("gl-buffer"),l=t("gl-vao"),u=t("./shaders").line,c=[0,0,0],h=[0,0,0],f=[0,0,0],d=[0,0,0],p=[1,1],v=o.prototype;v.bind=function(t,e,r){this.shader.bind(),this.shader.uniforms.model=t,this.shader.uniforms.view=e,this.shader.uniforms.projection=r,p[0]=this.gl.drawingBufferWidth,p[1]=this.gl.drawingBufferHeight,this.shader.uniforms.screenShape=p,this.vao.bind()},v.drawAxisLine=function(t,e,r,o,a){var s=n(h);this.shader.uniforms.majorAxis=h,s[t]=e[1][t]-e[0][t],this.shader.uniforms.minorAxis=s;var l=i(d,r);l[t]+=e[0][t],this.shader.uniforms.offset=l,this.shader.uniforms.lineWidth=a,this.shader.uniforms.color=o;var u=n(f);u[(t+2)%3]=1,this.shader.uniforms.screenAxis=u,this.vao.draw(this.gl.TRIANGLES,6);var u=n(f);u[(t+1)%3]=1,this.shader.uniforms.screenAxis=u,this.vao.draw(this.gl.TRIANGLES,6)},v.drawAxisTicks=function(t,e,r,i,o){
+-if(this.tickCount[t]){var a=n(c);a[t]=1,this.shader.uniforms.majorAxis=a,this.shader.uniforms.offset=e,this.shader.uniforms.minorAxis=r,this.shader.uniforms.color=i,this.shader.uniforms.lineWidth=o;var s=n(f);s[t]=1,this.shader.uniforms.screenAxis=s,this.vao.draw(this.gl.TRIANGLES,this.tickCount[t],this.tickOffset[t])}},v.drawGrid=function(t,e,r,o,a,s){if(this.gridCount[t]){var l=n(h);l[e]=r[1][e]-r[0][e],this.shader.uniforms.minorAxis=l;var u=i(d,o);u[e]+=r[0][e],this.shader.uniforms.offset=u;var p=n(c);p[t]=1,this.shader.uniforms.majorAxis=p;var v=n(f);v[t]=1,this.shader.uniforms.screenAxis=v,this.shader.uniforms.lineWidth=s,this.shader.uniforms.color=a,this.vao.draw(this.gl.TRIANGLES,this.gridCount[t],this.gridOffset[t])}},v.drawZero=function(t,e,r,o,a,s){var l=n(h);this.shader.uniforms.majorAxis=l,l[t]=r[1][t]-r[0][t],this.shader.uniforms.minorAxis=l;var u=i(d,o);u[t]+=r[0][t],this.shader.uniforms.offset=u;var c=n(f);c[e]=1,this.shader.uniforms.screenAxis=c,this.shader.uniforms.lineWidth=s,this.shader.uniforms.color=a,this.vao.draw(this.gl.TRIANGLES,6)},v.dispose=function(){this.vao.dispose(),this.vertBuffer.dispose(),this.shader.dispose()}},{"./shaders":180,"gl-buffer":124,"gl-vao":232}],180:[function(t,e,r){"use strict";var n=t("gl-shader"),i="#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, majorAxis, minorAxis, screenAxis;\nuniform float lineWidth;\nuniform vec2 screenShape;\n\nvec3 project(vec3 p) {\n  vec4 pp = projection * view * model * vec4(p, 1.0);\n  return pp.xyz / max(pp.w, 0.0001);\n}\n\nvoid main() {\n  vec3 major = position.x * majorAxis;\n  vec3 minor = position.y * minorAxis;\n\n  vec3 vPosition = major + minor + offset;\n  vec3 pPosition = project(vPosition);\n  vec3 offset = project(vPosition + screenAxis * position.z);\n\n  vec2 screen = normalize((offset - pPosition).xy * screenShape) / screenShape;\n\n  gl_Position = vec4(pPosition + vec3(0.5 * screen * lineWidth, 0), 1.0);\n}\n",o="precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}";r.line=function(t){return n(t,i,o,null,[{name:"position",type:"vec3"}])};var a="#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, axis;\nuniform float scale, angle, pixelScale;\nuniform vec2 resolution;\n\nvoid main() {  \n  //Compute plane offset\n  vec2 planeCoord = position.xy * pixelScale;\n  mat2 planeXform = scale * mat2(cos(angle), sin(angle),\n                                -sin(angle), cos(angle));\n  vec2 viewOffset = 2.0 * planeXform * planeCoord / resolution;\n\n  //Compute world offset\n  float axisDistance = position.z;\n  vec3 dataPosition = axisDistance * axis + offset;\n  vec4 worldPosition = model * vec4(dataPosition, 1);\n  \n  //Compute clip position\n  vec4 viewPosition = view * worldPosition;\n  vec4 clipPosition = projection * viewPosition;\n  clipPosition /= clipPosition.w;\n\n  //Apply text offset in clip coordinates\n  clipPosition += vec4(viewOffset, 0, 0);\n\n  //Done\n  gl_Position = clipPosition;\n}",s="precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}";r.text=function(t){return n(t,a,s,null,[{name:"position",type:"vec3"}])};var l="#define GLSLIFY 1\nattribute vec3 position;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection;\nuniform vec3 enable;\nuniform vec3 bounds[2];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  if(dot(normal, enable) > 0.0) {\n    vec3 nPosition = mix(bounds[0], bounds[1], 0.5 * (position + 1.0));\n    gl_Position = projection * view * model * vec4(nPosition, 1.0);\n  } else {\n    gl_Position = vec4(0,0,0,0);\n  }\n  colorChannel = abs(normal);\n}",u="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 colors[3];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  gl_FragColor = colorChannel.x * colors[0] + \n                 colorChannel.y * colors[1] +\n                 colorChannel.z * colors[2];\n}";r.bg=function(t){return n(t,l,u,null,[{name:"position",type:"vec3"},{name:"normal",type:"vec3"}])}},{"gl-shader":203}],181:[function(t,e,r){(function(r){"use strict";function n(t,e,r,n){this.gl=t,this.shader=e,this.buffer=r,this.vao=n,this.tickOffset=this.tickCount=this.labelOffset=this.labelCount=null}function i(t,e){try{return l(t,e)}catch(r){return console.warn("error vectorizing text:",r),{cells:[],positions:[]}}}function o(t,e,r,i,o,l){var c=a(t),h=s(t,[{buffer:c,size:3}]),f=u(t);f.attributes.position.location=0;var d=new n(t,f,c,h);return d.update(e,r,i,o,l),d}e.exports=o;var a=t("gl-buffer"),s=t("gl-vao"),l=t("vectorize-text"),u=t("./shaders").text,c=window||r.global||{},h=c.__TEXT_CACHE||{};c.__TEXT_CACHE={};var f=3,d=n.prototype,p=[0,0];d.bind=function(t,e,r,n){this.vao.bind(),this.shader.bind();var 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a=0;3>a;++a)G.autoScale?U[5*a]=G.aspect[a]/(v[1][a]-v[0][a]):U[5*a]=1/M,G.autoCenter&&(U[12+a]=.5*-U[5*a]*(v[0][a]+v[1][a]));for(var a=0;r>a;++a){var l=R[a];l.axesBounds=v,G.clipToBounds&&(l.clipBounds=v)}if(T.object&&(G.snapToData?C.position=T.dataCoordinate:C.position=T.dataPosition,C.bounds=v),N&&(N=!1,y()),j){G.axesPixels=c(G.axes,V,_,w),G.onrender&&G.onrender(),k.bindFramebuffer(k.FRAMEBUFFER,null),k.viewport(0,0,_,w);var A=G.clearColor;k.clearColor(A[0],A[1],A[2],A[3]),k.clear(k.COLOR_BUFFER_BIT|k.DEPTH_BUFFER_BIT),k.depthMask(!0),k.colorMask(!0,!0,!0,!0),k.enable(k.DEPTH_TEST),k.depthFunc(k.LEQUAL),k.disable(k.BLEND),k.disable(k.CULL_FACE);var L=!1;I.enable&&(L=L||I.isTransparent(),I.draw(V)),C.axes=I,T.object&&C.draw(V),k.disable(k.CULL_FACE);for(var a=0;r>a;++a){var l=R[a];l.axes=I,l.pixelRatio=G.pixelRatio,l.isOpaque&&l.isOpaque()&&l.draw(V),l.isTransparent&&l.isTransparent()&&(L=!0)}if(L){E.shape=q,E.bind(),k.clear(k.DEPTH_BUFFER_BIT),k.colorMask(!1,!1,!1,!1),k.depthMask(!0),k.depthFunc(k.LESS),I.enable&&I.isTransparent()&&I.drawTransparent(V);for(var a=0;r>a;++a){var l=R[a];l.isOpaque&&l.isOpaque()&&l.draw(V)}k.enable(k.BLEND),k.blendEquation(k.FUNC_ADD),k.blendFunc(k.ONE,k.ONE_MINUS_SRC_ALPHA),k.colorMask(!0,!0,!0,!0),k.depthMask(!1),k.clearColor(0,0,0,0),k.clear(k.COLOR_BUFFER_BIT),I.isTransparent()&&I.drawTransparent(V);for(var a=0;r>a;++a){var l=R[a];l.isTransparent&&l.isTransparent()&&l.drawTransparent(V)}k.bindFramebuffer(k.FRAMEBUFFER,null),k.blendFunc(k.ONE,k.ONE_MINUS_SRC_ALPHA),k.disable(k.DEPTH_TEST),S.bind(),E.color[0].bind(0),S.uniforms.accumBuffer=0,p(k),k.disable(k.BLEND)}j=!1;for(var a=0;r>a;++a)R[a].dirty=!1}}}function x(){_||G.contextLost||(requestAnimationFrame(x),b())}t=t||{};var _=!1,w=(t.pixelRatio||parseFloat(window.devicePixelRatio),t.canvas);if(!w)if(w=document.createElement("canvas"),t.container){var M=t.container;M.appendChild(w)}else document.body.appendChild(w);var k=t.gl;if(k||(k=i(w,t.glOptions||{premultipliedAlpha:!0,antialias:!0})),!k)throw new Error("webgl not supported");var A=t.bounds||[[-10,-10,-10],[10,10,10]],T=new n,E=d(k,[k.drawingBufferWidth,k.drawingBufferHeight],{preferFloat:!0}),S=g(k),L=t.camera||{eye:[2,0,0],center:[0,0,0],up:[0,1,0],zoomMin:.1,zoomMax:100,mode:"turntable"},z=t.axes||{},I=u(k,z);I.enable=!z.disable;var P=t.spikes||{},C=h(k,P),R=[],D=[],O=[],F=[],j=!0,N=!0,B=new Array(16),U=new Array(16),V={view:null,projection:B,model:U},N=!0,q=[k.drawingBufferWidth,k.drawingBufferHeight],G={gl:k,contextLost:!1,pixelRatio:t.pixelRatio||parseFloat(window.devicePixelRatio),canvas:w,selection:T,camera:l(w,L),axes:I,axesPixels:null,spikes:C,bounds:A,objects:R,shape:q,aspect:t.aspectRatio||[1,1,1],pickRadius:t.pickRadius||10,zNear:t.zNear||.01,zFar:t.zFar||1e3,fovy:t.fovy||Math.PI/4,clearColor:t.clearColor||[0,0,0,0],autoResize:a(t.autoResize),autoBounds:a(t.autoBounds),autoScale:!!t.autoScale,autoCenter:a(t.autoCenter),clipToBounds:a(t.clipToBounds),snapToData:!!t.snapToData,onselect:t.onselect||null,onrender:t.onrender||null,onclick:t.onclick||null,cameraParams:V,oncontextloss:null,mouseListener:null},H=[k.drawingBufferWidth/G.pixelRatio|0,k.drawingBufferHeight/G.pixelRatio|0];G.autoResize&&e(),window.addEventListener("resize",e),G.update=function(t){_||(t=t||{},j=!0,N=!0)},G.add=function(t){_||(t.axes=I,R.push(t),D.push(-1),j=!0,N=!0,r())},G.remove=function(t){if(!_){var e=R.indexOf(t);0>e||(R.splice(e,1),D.pop(),j=!0,N=!0,r())}},G.dispose=function(){if(!_&&(_=!0,window.removeEventListener("resize",e),w.removeEventListener("webglcontextlost",s),G.mouseListener.enabled=!1,!G.contextLost)){I.dispose(),C.dispose();for(var t=0;t<R.length;++t)R[t].dispose();E.dispose();for(var t=0;t<F.length;++t)F[t].dispose();S.dispose(),k=null,I=null,C=null,R=[]}};var X=!1,Y=0;G.mouseListener=v(w,function(t,e,r){if(!_){var n=F.length,i=R.length,o=T.object;T.distance=1/0,T.mouse[0]=e,T.mouse[1]=r,T.object=null,T.screen=null,T.dataCoordinate=T.dataPosition=null;var a=!1;if(t&&Y)X=!0;else{X&&(N=!0),X=!1;for(var s=0;n>s;++s){var l=F[s].query(e,H[1]-r-1,G.pickRadius);if(l){if(l.distance>T.distance)continue;for(var u=0;i>u;++u){var c=R[u];if(D[u]===s){var h=c.pick(l);h&&(T.buttons=t,T.screen=l.coord,T.distance=l.distance,T.object=c,T.index=h.distance,T.dataPosition=h.position,T.dataCoordinate=h.dataCoordinate,T.data=h,a=!0)}}}}}o&&o!==T.object&&(o.highlight&&o.highlight(null),j=!0),T.object&&(T.object.highlight&&T.object.highlight(T.data),j=!0),a=a||T.object!==o,a&&G.onselect&&G.onselect(T),1&t&&!(1&Y)&&G.onclick&&G.onclick(T),Y=t}}),w.addEventListener("webglcontextlost",s);var W=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],Z=[W[0].slice(),W[1].slice()];return x(),G.redraw=function(){_||(j=!0,b())},G}e.exports=s;var l=t("3d-view-controls"),u=t("gl-axes3d"),c=t("gl-axes3d/properties"),h=t("gl-spikes3d"),f=t("gl-select-static"),d=t("gl-fbo"),p=t("a-big-triangle"),v=t("mouse-change"),m=t("gl-mat4/perspective"),g=t("./lib/shader")},{"./lib/shader":172,"3d-view-controls":173,"a-big-triangle":175,"gl-axes3d":176,"gl-axes3d/properties":186,"gl-fbo":129,"gl-mat4/perspective":146,"gl-select-static":202,"gl-spikes3d":188,"mouse-change":421}],190:[function(t,e,r){"use strict";e.exports={vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  fragColor = color;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",fragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",pickVertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 id;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\nuniform vec4 pickOffset;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",pickFragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"}},{}],191:[function(t,e,r){"use strict";function n(t){if(t in f)return f[t];var e=c(t,{polygons:!0,font:"sans-serif",textAlign:"left",textBaseline:"alphabetic"}),r=[],n=[];e.forEach(function(t){t.forEach(function(t){for(var e=0;e<t.length;++e){var i=t[(e+t.length-1)%t.length],o=t[e],a=t[(e+1)%t.length],s=t[(e+2)%t.length],l=o[0]-i[0],u=o[1]-i[1],c=Math.sqrt(l*l+u*u);l/=c,u/=c,r.push(i[0],i[1]+1.4),n.push(u,-l),r.push(i[0],i[1]+1.4),n.push(-u,l),r.push(o[0],o[1]+1.4),n.push(-u,l),r.push(o[0],o[1]+1.4),n.push(-u,l),r.push(i[0],i[1]+1.4),n.push(u,-l),r.push(o[0],o[1]+1.4),n.push(u,-l);var h=s[0]-a[0],f=s[1]-a[1],d=Math.sqrt(h*h+f*f);h/=d,f/=d,r.push(o[0],o[1]+1.4),n.push(u,-l),r.push(o[0],o[1]+1.4),n.push(-u,l),r.push(a[0],a[1]+1.4),n.push(-f,h),r.push(a[0],a[1]+1.4),n.push(-f,h),r.push(o[0],o[1]+1.4),n.push(f,-h),r.push(a[0],a[1]+1.4),n.push(f,-h)}})});for(var i=[1/0,1/0,-(1/0),-(1/0)],o=0;o<r.length;o+=2)for(var a=0;2>a;++a)i[a]=Math.min(i[a],r[o+a]),i[2+a]=Math.max(i[2+a],r[o+a]);return f[t]={coords:r,normals:n,bounds:i}}function i(t,e,r,n,i,o,a){this.plot=t,this.shader=e,this.pickShader=r,this.positionBuffer=n,this.offsetBuffer=i,this.colorBuffer=o,this.idBuffer=a,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.numPoints=0,this.numVertices=0,this.pickOffset=0,this.points=null}function o(t,e){var r=t.gl,n=a(r,h.vertex,h.fragment),o=a(r,h.pickVertex,h.pickFragment),l=s(r),u=s(r),c=s(r),f=s(r),d=new i(t,n,o,l,u,c,f);return d.update(e),t.addObject(d),d}e.exports=o;var a=t("gl-shader"),s=t("gl-buffer"),l=t("text-cache"),u=t("typedarray-pool"),c=t("vectorize-text"),h=t("./lib/shaders"),f={},d=i.prototype;!function(){function t(){var t=this.plot,n=this.bounds,i=t.viewBox,o=t.dataBox,a=t.pixelRatio,s=n[2]-n[0],l=n[3]-n[1],u=o[2]-o[0],c=o[3]-o[1];e[0]=2*s/u,e[4]=2*l/c,e[6]=2*(n[0]-o[0])/u-1,e[7]=2*(n[1]-o[1])/c-1;var h=i[2]-i[0],f=i[3]-i[1];r[0]=2*a/h,r[1]=2*a/f}var e=[1,0,0,0,1,0,0,0,1],r=[1,1];d.draw=function(){var n=this.plot,i=this.shader,o=this.numVertices;if(o){var a=n.gl;t.call(this),i.bind(),i.uniforms.pixelScale=r,i.uniforms.viewTransform=e,this.positionBuffer.bind(),i.attributes.position.pointer(),this.offsetBuffer.bind(),i.attributes.offset.pointer(),this.colorBuffer.bind(),i.attributes.color.pointer(a.UNSIGNED_BYTE,!0),a.drawArrays(a.TRIANGLES,0,o)}};var n=[0,0,0,0];d.drawPick=function(i){var o=this.plot,a=this.pickShader,s=this.numVertices,l=o.gl;if(this.pickOffset=i,!s)return i;for(var u=0;4>u;++u)n[u]=i>>8*u&255;return t.call(this),a.bind(),a.uniforms.pixelScale=r,a.uniforms.viewTransform=e,a.uniforms.pickOffset=n,this.positionBuffer.bind(),a.attributes.position.pointer(),this.offsetBuffer.bind(),a.attributes.offset.pointer(),this.idBuffer.bind(),a.attributes.id.pointer(l.UNSIGNED_BYTE,!1),l.drawArrays(l.TRIANGLES,0,s),i+this.numPoints}}(),d.pick=function(t,e,r){var n=this.pickOffset,i=this.numPoints;if(n>r||r>=n+i)return null;var o=r-n,a=this.points;return{object:this,pointId:o,dataCoord:[a[2*o],a[2*o+1]]}},d.update=function(t){t=t||{};var e=t.positions||[],r=t.colors||[],i=t.glyphs||[],o=t.sizes||[],a=t.borderWidths||[],s=t.borderColors||[];this.points=e;for(var c=this.bounds=[1/0,1/0,-(1/0),-(1/0)],h=0,f=0;f<i.length;++f){h+=l("sans-serif",i[f]).data.length+n(i[f]).coords.length>>1;for(var d=0;2>d;++d)c[d]=Math.min(c[d],e[2*f+d]),c[2+d]=Math.max(c[2+d],e[2*f+d])}c[0]===c[2]&&(c[2]+=1),c[3]===c[1]&&(c[3]+=1);for(var p=1/(c[2]-c[0]),v=1/(c[3]-c[1]),m=c[0],g=c[1],y=u.mallocFloat32(2*h),b=u.mallocFloat32(2*h),x=u.mallocUint8(4*h),_=u.mallocUint32(h),w=0,f=0;f<i.length;++f){for(var M=l("sans-serif",i[f]),k=n(i[f]),A=p*(e[2*f]-m),T=v*(e[2*f+1]-g),E=o[f],S=255*r[4*f],L=255*r[4*f+1],z=255*r[4*f+2],I=255*r[4*f+3],P=.5*(k.bounds[0]+k.bounds[2]),C=.5*(k.bounds[1]+k.bounds[3]),d=0;d<M.data.length;d+=2)y[2*w]=A,y[2*w+1]=T,b[2*w]=-E*(M.data[d]-P),b[2*w+1]=-E*(M.data[d+1]-C),x[4*w]=S,x[4*w+1]=L,x[4*w+2]=z,x[4*w+3]=I,_[w]=f,w+=1;var R=a[f];S=255*s[4*f],L=255*s[4*f+1],z=255*s[4*f+2],I=255*s[4*f+3];for(var d=0;d<k.coords.length;d+=2)y[2*w]=A,y[2*w+1]=T,b[2*w]=-(E*(k.coords[d]-P)+R*k.normals[d]),b[2*w+1]=-(E*(k.coords[d+1]-C)+R*k.normals[d+1]),x[4*w]=S,x[4*w+1]=L,x[4*w+2]=z,x[4*w+3]=I,_[w]=f,w+=1}this.numPoints=i.length,this.numVertices=h,this.positionBuffer.update(y),this.offsetBuffer.update(b),this.colorBuffer.update(x),this.idBuffer.update(_),u.free(y),u.free(b),u.free(x),u.free(_)},d.dispose=function(){this.shader.dispose(),this.pickShader.dispose(),this.positionBuffer.dispose(),this.offsetBuffer.dispose(),this.colorBuffer.dispose(),this.idBuffer.dispose(),this.plot.removeObject(this)}},{"./lib/shaders":190,"gl-buffer":124,"gl-shader":203,"text-cache":453,"typedarray-pool":458,"vectorize-text":460}],192:[function(t,e,r){r.pointVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute float weight;\n\nuniform mat3 matrix;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}\n",r.pointFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}\n",r.pickVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n",r.pickFragment="precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"},{}],193:[function(t,e,r){arguments[4][68][0].apply(r,arguments)},{dup:68}],194:[function(t,e,r){"use strict";function n(t,e,r,n,o){4*f>=o?i(0,o-1,t,e,r,n):h(0,o-1,t,e,r,n)}function i(t,e,r,n,i,o){for(var a=t+1;e>=a;++a){for(var s=r[a],l=n[2*a],u=n[2*a+1],c=i[a],h=o[a],f=a;f>t;){var d=r[f-1],p=n[2*(f-1)];if((d-s||l-p)>=0)break;r[f]=d,n[2*f]=p,n[2*f+1]=n[2*f-1],i[f]=i[f-1],o[f]=o[f-1],f-=1}r[f]=s,n[2*f]=l,n[2*f+1]=u,i[f]=c,o[f]=h}}function o(t,e,r,n,i,o){var a=r[t],s=n[2*t],l=n[2*t+1],u=i[t],c=o[t];r[t]=r[e],n[2*t]=n[2*e],n[2*t+1]=n[2*e+1],i[t]=i[e],o[t]=o[e],r[e]=a,n[2*e]=s,n[2*e+1]=l,i[e]=u,o[e]=c}function a(t,e,r,n,i,o){r[t]=r[e],n[2*t]=n[2*e],n[2*t+1]=n[2*e+1],i[t]=i[e],o[t]=o[e]}function s(t,e,r,n,i,o,a){var s=n[t],l=i[2*t],u=i[2*t+1],c=o[t],h=a[t];n[t]=n[e],i[2*t]=i[2*e],i[2*t+1]=i[2*e+1],o[t]=o[e],a[t]=a[e],n[e]=n[r],i[2*e]=i[2*r],i[2*e+1]=i[2*r+1],o[e]=o[r],a[e]=a[r],n[r]=s,i[2*r]=l,i[2*r+1]=u,o[r]=c,a[r]=h}function l(t,e,r,n,i,o,a,s,l,u,c){s[t]=s[e],l[2*t]=l[2*e],l[2*t+1]=l[2*e+1],u[t]=u[e],c[t]=c[e],s[e]=r,l[2*e]=n,l[2*e+1]=i,u[e]=o,c[e]=a}function u(t,e,r,n,i){return(r[t]-r[e]||n[2*e]-n[2*t]||i[t]-i[e])<0}function c(t,e,r,n,i,o,a,s){return(e-o[t]||a[2*t]-r||i-s[t])<0}function h(t,e,r,n,d,p){var v=(e-t+1)/6|0,m=t+v,g=e-v,y=t+e>>1,b=y-v,x=y+v,_=m,w=b,M=y,k=x,A=g,T=t+1,E=e-1,S=0;u(_,w,r,n,d,p)&&(S=_,_=w,w=S),u(k,A,r,n,d,p)&&(S=k,k=A,A=S),u(_,M,r,n,d,p)&&(S=_,_=M,M=S),u(w,M,r,n,d,p)&&(S=w,w=M,M=S),u(_,k,r,n,d,p)&&(S=_,_=k,k=S),u(M,k,r,n,d,p)&&(S=M,
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h=n.prototype;h.dispose=function(){this.shader.dispose(),this.pickShader.dispose(),this.offsetBuffer.dispose(),this.pickBuffer.dispose(),this.xCoords&&u.free(this.xCoords),this.plot.removeObject(this)},h.update=function(t){function e(e,r){return e in t?t[e]:r}t=t||{},this.size=e("size",12),this.color=e("color",[1,0,0,1]).slice(),this.borderSize=e("borderSize",1),this.borderColor=e("borderColor",[0,0,0,1]).slice(),this.xCoords&&u.free(this.xCoords);var r=t.positions,n=u.mallocFloat32(r.length),i=u.mallocInt32(r.length>>>1);n.set(r);var o=u.mallocFloat32(r.length);this.points=r,this.scales=l(n,i,o,this.bounds),this.offsetBuffer.update(n),this.pickBuffer.update(i),this.weightBuffer.update(o);for(var a=u.mallocFloat32(r.length>>>1),s=0,c=0;s<r.length;s+=2,++c)a[c]=n[s];u.free(i),u.free(n),u.free(o),this.xCoords=a,this.pointCount=r.length>>>1,this.pickOffset=0},h.drawPick=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0,0,0];return function(r){var n=this.plot,i=this.pickShader,o=this.scales,a=this.offsetBuffer,l=this.pickBuffer,u=this.bounds,c=this.size,h=this.borderSize,f=n.gl,d=n.pickPixelRatio,p=n.viewBox,v=n.dataBox;if(0===this.pointCount)return r;var m=u[2]-u[0],g=u[3]-u[1],y=v[2]-v[0],b=v[3]-v[1],x=(p[2]-p[0])*d/n.pixelRatio,_=(p[3]-p[1])*d/n.pixelRatio,w=Math.min(y/x,b/_);t[0]=2*m/y,t[4]=2*g/b,t[6]=2*(u[0]-v[0])/y-1,t[7]=2*(u[1]-v[1])/b-1,this.pickOffset=r,e[0]=255&r,e[1]=r>>8&255,e[2]=r>>16&255,e[3]=r>>24&255,i.bind(),i.uniforms.matrix=t,i.uniforms.color=this.color,i.uniforms.borderColor=this.borderColor,i.uniforms.pointSize=d*(c+h),i.uniforms.pickOffset=e,0===this.borderSize?i.uniforms.centerFraction=2:i.uniforms.centerFraction=c/(c+h+1.25),a.bind(),i.attributes.position.pointer(),l.bind(),i.attributes.pickId.pointer(f.UNSIGNED_BYTE);for(var M=this.xCoords,k=(v[0]-u[0]-w*c*d)/m,A=(v[2]-u[0]+w*c*d)/m,T=o.length-1;T>=0;--T){var E=o[T];if(!(E.pixelSize<w&&T>1)){var S=E.offset,L=E.count+S,z=s.ge(M,k,S,L-1),I=s.lt(M,A,z,L-1)+1;I>z&&f.drawArrays(f.POINTS,z,I-z)}}return r+this.pointCount}}(),h.draw=function(){var t=[1,0,0,0,1,0,0,0,1];return function(){var e=this.plot,r=this.shader,n=this.scales,i=this.offsetBuffer,o=this.bounds,a=this.size,l=this.borderSize,u=e.gl,c=e.pixelRatio,h=e.viewBox,f=e.dataBox;if(0!==this.pointCount){var d=o[2]-o[0],p=o[3]-o[1],v=f[2]-f[0],m=f[3]-f[1],g=h[2]-h[0],y=h[3]-h[1],b=Math.min(v/g,m/y);t[0]=2*d/v,t[4]=2*p/m,t[6]=2*(o[0]-f[0])/v-1,t[7]=2*(o[1]-f[1])/m-1,r.bind(),r.uniforms.matrix=t,r.uniforms.color=this.color,r.uniforms.borderColor=this.borderColor,r.uniforms.pointSize=c*(a+l),r.uniforms.useWeight=1,0===this.borderSize?r.uniforms.centerFraction=2:r.uniforms.centerFraction=a/(a+l+1.25),i.bind(),r.attributes.position.pointer(),this.weightBuffer.bind(),r.attributes.weight.pointer();for(var x=this.xCoords,_=(f[0]-o[0]-b*a*c)/d,w=(f[2]-o[0]+b*a*c)/d,M=!0,k=n.length-1;k>=0;--k){var A=n[k];if(!(A.pixelSize<b&&k>1)){var T=A.offset,E=A.count+T,S=s.ge(x,_,T,E-1),L=s.lt(x,w,S,E-1)+1;L>S&&u.drawArrays(u.POINTS,S,L-S),M&&(M=!1,r.uniforms.useWeight=0)}}}}}(),h.pick=function(t,e,r){var n=this.pickOffset,i=this.pointCount;if(n>r||r>=n+i)return null;var o=r-n,a=this.points;return{object:this,pointId:o,dataCoord:[a[2*o],a[2*o+1]]}}},{"./lib/shader":192,"binary-search-bounds":193,"gl-buffer":124,"gl-shader":203,"snap-points-2d":195,"typedarray-pool":458}],197:[function(t,e,r){"use strict";function n(t,e){var r=o[e];if(r||(r=o[e]={}),t in r)return r[t];for(var n=i(t,{textAlign:"center",textBaseline:"middle",lineHeight:1,font:e}),a=i(t,{triangles:!0,textAlign:"center",textBaseline:"middle",lineHeight:1,font:e}),s=[[1/0,1/0],[-(1/0),-(1/0)]],l=0;l<n.positions.length;++l)for(var u=n.positions[l],c=0;2>c;++c)s[0][c]=Math.min(s[0][c],u[c]),s[1][c]=Math.max(s[1][c],u[c]);return r[t]=[a,n,s]}var i=t("vectorize-text");e.exports=n;var o={}},{"vectorize-text":460}],198:[function(t,e,r){function n(t,e){var r=i(t,e),n=r.attributes;return n.position.location=0,n.color.location=1,n.glyph.location=2,n.id.location=3,r}var i=t("gl-shader"),o="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\n\nuniform vec4 highlightId;\nuniform float highlightScale;\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   || \n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = 1.0;\n    if(distance(highlightId, id) < 0.0001) {\n      scale = highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1);\n    vec4 viewPosition = view * worldPosition;\n    viewPosition = viewPosition / viewPosition.w;\n    vec4 clipPosition = projection * (viewPosition + scale * vec4(glyph.x, -glyph.y, 0, 0));\n    \n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}",a="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float highlightScale, pixelRatio;\nuniform vec4 highlightId;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = pixelRatio;\n    if(distance(highlightId.bgr, id.bgr) < 0.001) {\n      scale *= highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1.0);\n    vec4 viewPosition = view * worldPosition;\n    vec4 clipPosition = projection * viewPosition;\n    clipPosition /= clipPosition.w;\n    \n    gl_Position = clipPosition + vec4(screenSize * scale * vec2(glyph.x, -glyph.y), 0.0, 0.0);\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}",s="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform float highlightScale;\nuniform vec4 highlightId;\nuniform vec3 axes[2];\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float scale, pixelRatio;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   ||\n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float lscale = pixelRatio * scale;\n    if(distance(highlightId, id) < 0.0001) {\n      lscale *= highlightScale;\n    }\n\n    vec4 clipCenter   = projection * view * model * vec4(position, 1);\n    vec3 dataPosition = position + 0.5*lscale*(axes[0] * glyph.x + axes[1] * glyph.y) * clipCenter.w * screenSize.y;\n    vec4 clipPosition = projection * view * model * vec4(dataPosition, 1);\n\n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = dataPosition;\n  }\n}\n",l="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float opacity;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   ||\n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = interpColor * opacity;\n  }\n}\n",u="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float pickGroup;\n\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   || \n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = vec4(pickGroup, pickId.bgr);\n  }\n}",c=[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"glyph",type:"vec2"},{name:"id",type:"vec4"}],h={vertex:o,fragment:l,attributes:c},f={vertex:a,fragment:l,attributes:c},d={vertex:s,fragment:l,attributes:c},p={vertex:o,fragment:u,attributes:c},v={vertex:a,fragment:u,attributes:c},m={vertex:s,fragment:u,attributes:c};r.createPerspective=function(t){return n(t,h)},r.createOrtho=function(t){return n(t,f)},r.createProject=function(t){return n(t,d)},r.createPickPerspective=function(t){return n(t,p)},r.createPickOrtho=function(t){return n(t,v)},r.createPickProject=function(t){return n(t,m)}},{"gl-shader":203}],199:[function(t,e,r){"use strict";function n(t,e){var r=t[0],n=t[1],i=t[2],o=t[3];return t[0]=e[0]*r+e[4]*n+e[8]*i+e[12]*o,t[1]=e[1]*r+e[5]*n+e[9]*i+e[13]*o,t[2]=e[2]*r+e[6]*n+e[10]*i+e[14]*o,t[3]=e[3]*r+e[7]*n+e[11]*i+e[15]*o,t}function i(t,e,r,i){return n(i,i,r),n(i,i,e),n(i,i,t)}function o(t,e){this.index=t,this.dataCoordinate=this.position=e}function a(t,e,r,n,i,a,s,l,u,c,h,f){this.gl=t,this.pixelRatio=1,this.shader=e,this.orthoShader=r,this.projectShader=n,this.pointBuffer=i,this.colorBuffer=a,this.glyphBuffer=s,this.idBuffer=l,this.vao=u,this.vertexCount=0,this.lineVertexCount=0,this.opacity=1,this.lineWidth=0,this.projectScale=[2/3,2/3,2/3],this.projectOpacity=[1,1,1],this.pickId=0,this.pickPerspectiveShader=c,this.pickOrthoShader=h,this.pickProjectShader=f,this.points=[],this._selectResult=new o(0,[0,0,0]),this.useOrtho=!0,this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.axesProject=[!0,!0,!0],this.axesBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.highlightId=[1,1,1,1],this.highlightScale=2,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.dirty=!0}function s(t){return t[0]=t[1]=t[2]=0,t}function l(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=1,t}function u(t,e,r,n){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[r]=n,t}function c(t){for(var e=L,r=0;2>r;++r)for(var n=0;3>n;++n)e[r][n]=Math.max(Math.min(t[r][n],1e8),-1e8);return e}function h(t,e,r,n,o){var a,h=e.axesProject,f=e.gl,d=t.uniforms,p=r.model||x,v=r.view||x,m=r.projection||x,y=e.axesBounds,b=c(e.clipBounds);a=e.axes?e.axes.lastCubeProps.axis:[1,1,1],w[0]=2/f.drawingBufferWidth,w[1]=2/f.drawingBufferHeight,t.bind(),d.view=v,d.projection=m,d.screenSize=w,d.highlightId=e.highlightId,d.highlightScale=e.highlightScale,d.clipBounds=b,d.pickGroup=e.pickId/255,d.pixelRatio=e.pixelRatio;for(var _=0;3>_;++_)if(h[_]&&e.projectOpacity[_]<1===n){d.scale=e.projectScale[_],d.opacity=e.projectOpacity[_];for(var L=E,z=0;16>z;++z)L[z]=0;for(var z=0;4>z;++z)L[5*z]=1;L[5*_]=0,a[_]<0?L[12+_]=y[0][_]:L[12+_]=y[1][_],g(L,p,L),d.model=L;var I=(_+1)%3,P=(_+2)%3,C=s(M),R=s(k);C[I]=1,R[P]=1;var D=i(m,v,p,l(A,C)),O=i(m,v,p,l(T,R));if(Math.abs(D[1])>Math.abs(O[1])){var F=D;D=O,O=F,F=C,C=R,R=F;var j=I;I=P,P=j}D[0]<0&&(C[I]=-1),O[1]>0&&(R[P]=-1);for(var N=0,B=0,z=0;4>z;++z)N+=Math.pow(p[4*I+z],2),B+=Math.pow(p[4*P+z],2);C[I]/=Math.sqrt(N),R[P]/=Math.sqrt(B),d.axes[0]=C,d.axes[1]=R,d.fragClipBounds[0]=u(S,b[0],_,-1e8),d.fragClipBounds[1]=u(S,b[1],_,1e8),e.vao.draw(f.TRIANGLES,e.vertexCount),e.lineWidth>0&&(f.lineWidth(e.lineWidth),e.vao.draw(f.LINES,e.lineVertexCount,e.vertexCount))}}function f(t,e,r,n,i,o){var a=r.gl;if(r.vao.bind(),i===r.opacity<1||o){t.bind();var s=t.uniforms;s.model=n.model||x,s.view=n.view||x,s.projection=n.projection||x,w[0]=2/a.drawingBufferWidth,w[1]=2/a.drawingBufferHeight,s.screenSize=w,s.highlightId=r.highlightId,s.highlightScale=r.highlightScale,s.fragClipBounds=P,s.clipBounds=r.axes.bounds,s.opacity=r.opacity,s.pickGroup=r.pickId/255,s.pixelRatio=r.pixelRatio,r.vao.draw(a.TRIANGLES,r.vertexCount),r.lineWidth>0&&(a.lineWidth(r.lineWidth),r.vao.draw(a.LINES,r.lineVertexCount,r.vertexCount))}h(e,r,n,i,o),r.vao.unbind()}function d(t){var e=t.gl,r=y.createPerspective(e),n=y.createOrtho(e),i=y.createProject(e),o=y.createPickPerspective(e),s=y.createPickOrtho(e),l=y.createPickProject(e),u=p(e),c=p(e),h=p(e),f=p(e),d=v(e,[{buffer:u,size:3,type:e.FLOAT},{buffer:c,size:4,type:e.FLOAT},{buffer:h,size:2,type:e.FLOAT},{buffer:f,size:4,type:e.UNSIGNED_BYTE,normalized:!0}]),m=new a(e,r,n,i,u,c,h,f,d,o,s,l);return m.update(t),m}var p=t("gl-buffer"),v=t("gl-vao"),m=t("typedarray-pool"),g=t("gl-mat4/multiply"),y=t("./lib/shaders"),b=t("./lib/glyphs"),x=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1];e.exports=d;var _=a.prototype;_.pickSlots=1,_.setPickBase=function(t){this.pickId=t},_.isTransparent=function(){if(this.opacity<1)return!0;for(var t=0;3>t;++t)if(this.axesProject[t]&&this.projectOpacity[t]<1)return!0;return!1},_.isOpaque=function(){if(this.opacity>=1)return!0;for(var t=0;3>t;++t)if(this.axesProject[t]&&this.projectOpacity[t]>=1)return!0;return!1};var w=[0,0],M=[0,0,0],k=[0,0,0],A=[0,0,0,1],T=[0,0,0,1],E=x.slice(),S=[0,0,0],L=[[0,0,0],[0,0,0]],z=[-1e8,-1e8,-1e8],I=[1e8,1e8,1e8],P=[z,I];_.draw=function(t){var e=this.useOrtho?this.orthoShader:this.shader;f(e,this.projectShader,this,t,!1,!1)},_.drawTransparent=function(t){var e=this.useOrtho?this.orthoShader:this.shader;f(e,this.projectShader,this,t,!0,!1)},_.drawPick=function(t){var e=this.useOrtho?this.pickOrthoShader:this.pickPerspectiveShader;f(e,this.pickProjectShader,this,t,!1,!0)},_.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=t.value[2]+(t.value[1]<<8)+(t.value[0]<<16);if(e>=this.pointCount||0>e)return null;var r=this.points[e],n=this._selectResult;n.index=e;for(var i=0;3>i;++i)n.position[i]=n.dataCoordinate[i]=r[i];return n},_.highlight=function(t){if(t){var e=t.index,r=255&e,n=e>>8&255,i=e>>16&255;this.highlightId=[r/255,n/255,i/255,0]}else this.highlightId=[1,1,1,1]},_.update=function(t){if(t=t||{},"perspective"in 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M=w[0],k=w[1],A=w[2];p+=3*M.cells.length,v+=2*k.edges.length}var T=p+v,E=m.mallocFloat(3*T),S=m.mallocFloat(4*T),L=m.mallocFloat(2*T),z=m.mallocUint32(T),I=[0,o[1]],P=0,C=p,R=[0,0,0,1],D=[0,0,0,1],O=Array.isArray(u)&&Array.isArray(u[0]),F=Array.isArray(f)&&Array.isArray(f[0]);t:for(var y=0;g>y;++y){for(var x=n[y],_=0;3>_;++_){if(isNaN(x[_])||!isFinite(x[_])){d+=1;continue t}s[_]=Math.max(s[_],x[_]),a[_]=Math.min(a[_],x[_])}var w;w=Array.isArray(l)?b(l[y],i):l?b(l,i):b("\u25cf",i);var M=w[0],k=w[1],A=w[2];if(Array.isArray(u)){var j;if(j=O?u[y]:u,3===j.length){for(var _=0;3>_;++_)R[_]=j[_];R[3]=1}else if(4===j.length)for(var _=0;4>_;++_)R[_]=j[_]}else R[0]=R[1]=R[2]=0,R[3]=1;if(Array.isArray(f)){var j;if(j=F?f[y]:f,3===j.length){for(var _=0;3>_;++_)D[_]=j[_];D[_]=1}else if(4===j.length)for(var _=0;4>_;++_)D[_]=j[_]}else D[0]=D[1]=D[2]=0,D[3]=1;var N=.5;Array.isArray(c)?N=+c[y]:c?N=+c:this.useOrtho&&(N=12);var B=0;Array.isArray(h)?B=+h[y]:h&&(B=+h);for(var U=Math.cos(B),V=Math.sin(B),x=n[y],_=0;3>_;++_)s[_]=Math.max(s[_],x[_]),a[_]=Math.min(a[_],x[_]);o[0]<0?I[0]=o[0]*(1+A[1][0]):o[0]>0&&(I[0]=-o[0]*(1+A[0][0]));for(var q=M.cells,G=M.positions,_=0;_<q.length;++_)for(var H=q[_],X=0;3>X;++X){for(var Y=0;3>Y;++Y)E[3*P+Y]=x[Y];for(var Y=0;4>Y;++Y)S[4*P+Y]=R[Y];z[P]=d;var W=G[H[X]];L[2*P]=N*(U*W[0]-V*W[1]+I[0]),L[2*P+1]=N*(V*W[0]+U*W[1]+I[1]),P+=1}for(var q=k.edges,G=k.positions,_=0;_<q.length;++_)for(var H=q[_],X=0;2>X;++X){for(var Y=0;3>Y;++Y)E[3*C+Y]=x[Y];for(var Y=0;4>Y;++Y)S[4*C+Y]=D[Y];z[C]=d;var W=G[H[X]];L[2*C]=N*(U*W[0]-V*W[1]+I[0]),L[2*C+1]=N*(V*W[0]+U*W[1]+I[1]),C+=1}d+=1}this.vertexCount=p,this.lineVertexCount=v,this.pointBuffer.update(E),this.colorBuffer.update(S),this.glyphBuffer.update(L),this.idBuffer.update(new Uint32Array(z)),m.free(E),m.free(S),m.free(L),m.free(z),this.bounds=[a,s],this.points=n,this.pointCount=n.length}},_.dispose=function(){this.shader.dispose(),this.orthoShader.dispose(),this.pickPerspectiveShader.dispose(),this.pickOrthoShader.dispose(),this.vao.dispose(),this.pointBuffer.dispose(),this.colorBuffer.dispose(),this.glyphBuffer.dispose(),this.idBuffer.dispose()}},{"./lib/glyphs":197,"./lib/shaders":198,"gl-buffer":124,"gl-mat4/multiply":145,"gl-vao":232,"typedarray-pool":458}],200:[function(t,e,r){"use strict";r.boxVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n",r.boxFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"},{}],201:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.boxBuffer=e,this.boxShader=r,this.enabled=!0,this.selectBox=[1/0,1/0,-(1/0),-(1/0)],this.borderColor=[0,0,0,1],this.innerFill=!1,this.innerColor=[0,0,0,.25],this.outerFill=!0,this.outerColor=[0,0,0,.5],this.borderWidth=10}function i(t,e){var r=t.gl,i=a(r,[0,0,0,1,1,0,1,1]),l=o(r,s.boxVertex,s.boxFragment),u=new n(t,i,l);return u.update(e),t.addOverlay(u),u}var o=t("gl-shader"),a=t("gl-buffer"),s=t("./lib/shaders");e.exports=i;var l=n.prototype;l.draw=function(){if(this.enabled){var t=this.plot,e=this.selectBox,r=this.borderWidth,n=(this.innerFill,this.innerColor),i=(this.outerFill,this.outerColor),o=this.borderColor,a=t.box,s=t.screenBox,l=t.dataBox,u=t.viewBox,c=t.pixelRatio,h=(e[0]-l[0])*(u[2]-u[0])/(l[2]-l[0])+u[0],f=(e[1]-l[1])*(u[3]-u[1])/(l[3]-l[1])+u[1],d=(e[2]-l[0])*(u[2]-u[0])/(l[2]-l[0])+u[0],p=(e[3]-l[1])*(u[3]-u[1])/(l[3]-l[1])+u[1];if(h=Math.max(h,u[0]),f=Math.max(f,u[1]),d=Math.min(d,u[2]),p=Math.min(p,u[3]),!(h>d||f>p)){a.bind();var v=s[2]-s[0],m=s[3]-s[1];if(this.outerFill&&(a.drawBox(0,0,v,f,i),a.drawBox(0,f,h,p,i),a.drawBox(0,p,v,m,i),a.drawBox(d,f,v,p,i)),this.innerFill&&a.drawBox(h,f,d,p,n),r>0){var g=r*c;a.drawBox(h-g,f-g,d+g,f+g,o),a.drawBox(h-g,p-g,d+g,p+g,o),a.drawBox(h-g,f-g,h+g,p+g,o),a.drawBox(d-g,f-g,d+g,p+g,o)}}}},l.update=function(t){t=t||{},this.innerFill=!!t.innerFill,this.outerFill=!!t.outerFill,this.innerColor=(t.innerColor||[0,0,0,.5]).slice(),this.outerColor=(t.outerColor||[0,0,0,.5]).slice(),this.borderColor=(t.borderColor||[0,0,0,1]).slice(),this.borderWidth=t.borderWidth||0,this.selectBox=(t.selectBox||this.selectBox).slice()},l.dispose=function(){this.boxBuffer.dispose(),this.boxShader.dispose(),this.plot.removeOverlay(this)}},{"./lib/shaders":200,"gl-buffer":124,"gl-shader":203}],202:[function(t,e,r){"use strict";function n(t,e,r,n,i){this.coord=[t,e],this.id=r,this.value=n,this.distance=i}function i(t,e,r){this.gl=t,this.fbo=e,this.buffer=r,this._readTimeout=null;var 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h=[a-o,u-s],f=l(this.buffer,[h[0],h[1],4],[4,4*i[0],1],4*(o+i[0]*s)),d=c(f.hi(h[0],h[1],1),r,r),p=d[0],v=d[1];if(0>p||Math.pow(this.radius,2)<d[2])return null;var m=f.get(p,v,0),g=f.get(p,v,1),y=f.get(p,v,2),b=f.get(p,v,3);return new n(p+o|0,v+s|0,m,[g,y,b],Math.sqrt(d[2]))},h.dispose=function(){this.gl&&(this.fbo.dispose(),s.free(this.buffer),this.gl=null,this._readTimeout&&clearTimeout(this._readTimeout))}},{"bit-twiddle":51,"cwise/lib/wrapper":118,"gl-fbo":129,ndarray:433,"typedarray-pool":458}],203:[function(t,e,r){"use strict";function n(t){this.gl=t,this._vref=this._fref=this._relink=this.vertShader=this.fragShader=this.program=this.attributes=this.uniforms=this.types=null}function i(t,e){return t.name<e.name?-1:1}function o(t,e,r,i,o){var a=new n(t);return a.update(e,r,i,o),a}var 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vec4(dataCoordinate, 1.0);\n\n  vec4 clipPosition = projection * view * worldPosition;\n  clipPosition.z = clipPosition.z + zOffset;\n\n  gl_Position = clipPosition;\n  value = f;\n  kill = -1.0;\n  worldCoordinate = dataCoordinate;\n  planeCoordinate = uv.zw;\n\n  //Don't do lighting for contours\n  surfaceNormal   = vec3(1,0,0);\n  eyeDirection    = vec3(0,1,0);\n  lightDirection  = vec3(0,0,1);\n}\n",s="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec2 shape;\nuniform vec3 clipBounds[2];\nuniform float pickId;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 surfaceNormal;\n\nvec2 splitFloat(float v) {\n  float vh = 255.0 * v;\n  float upper = floor(vh);\n  float lower = fract(vh);\n  return vec2(upper / 255.0, floor(lower * 16.0) / 16.0);\n}\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n  vec2 ux = splitFloat(planeCoordinate.x / shape.x);\n  vec2 uy = splitFloat(planeCoordinate.y / shape.y);\n  gl_FragColor = vec4(pickId, ux.x, uy.x, ux.y + (uy.y/16.0));\n}\n";r.createShader=function(t){var e=n(t,i,o,null,[{name:"uv",type:"vec4"},{name:"f",type:"vec3"},{name:"normal",type:"vec3"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e.attributes.normal.location=2,e},r.createPickShader=function(t){var e=n(t,i,s,null,[{name:"uv",type:"vec4"},{name:"f",type:"vec3"},{name:"normal",type:"vec3"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e.attributes.normal.location=2,e},r.createContourShader=function(t){var e=n(t,a,o,null,[{name:"uv",type:"vec4"},{name:"f",type:"float"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e},r.createPickContourShader=function(t){var e=n(t,a,s,null,[{name:"uv",type:"vec4"},{name:"f",type:"float"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e}},{"gl-shader":203}],223:[function(t,e,r){arguments[4][22][0].apply(r,arguments)},{dup:22}],224:[function(t,e,r){"use strict";function n(t){if(t in l)return l[t];for(var e=[],r=0;t>r;++r)e.push("out",r,"s=0.5*(inp",r,"l-inp",r,"r);");for(var n=["array"],i=["junk"],r=0;t>r;++r){n.push("array"),i.push("out"+r+"s");var o=a(t);o[r]=-1,n.push({array:0,offset:o.slice()}),o[r]=1,n.push({array:0,offset:o.slice()}),i.push("inp"+r+"l","inp"+r+"r")}return l[t]=s({args:n,pre:c,post:c,body:{body:e.join(""),args:i.map(function(t){return{name:t,lvalue:0===t.indexOf("out"),rvalue:0===t.indexOf("inp"),count:"junk"!==t|0}}),thisVars:[],localVars:[]},funcName:"fdTemplate"+t})}function i(t){function e(e){for(var r=o-e.length,n=[],i=[],s=[],l=0;o>l;++l)e.indexOf(l+1)>=0?s.push("0"):e.indexOf(-(l+1))>=0?s.push("s["+l+"]-1"):(s.push("-1"),n.push("1"),i.push("s["+l+"]-2"));var u=".lo("+n.join()+").hi("+i.join()+")";if(0===n.length&&(u=""),r>0){a.push("if(1");for(var l=0;o>l;++l)e.indexOf(l+1)>=0||e.indexOf(-(l+1))>=0||a.push("&&s[",l,"]>2");a.push("){grad",r,"(src.pick(",s.join(),")",u);for(var l=0;o>l;++l)e.indexOf(l+1)>=0||e.indexOf(-(l+1))>=0||a.push(",dst.pick(",s.join(),",",l,")",u);a.push(");")}for(var l=0;l<e.length;++l){var c=Math.abs(e[l])-1,h="dst.pick("+s.join()+","+c+")"+u;switch(t[c]){case"clamp":var f=s.slice(),d=s.slice();e[l]<0?f[c]="s["+c+"]-2":d[c]="1",0===r?a.push("if(s[",c,"]>1){dst.set(",s.join(),",",c,",0.5*(src.get(",f.join(),")-src.get(",d.join(),")))}else{dst.set(",s.join(),",",c,",0)};"):a.push("if(s[",c,"]>1){diff(",h,",src.pick(",f.join(),")",u,",src.pick(",d.join(),")",u,");}else{zero(",h,");};");break;case"mirror":0===r?a.push("dst.set(",s.join(),",",c,",0);"):a.push("zero(",h,");");break;case"wrap":var 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Error("ndarray-gradient: invalid boundary conditions")}else r="string"==typeof r?a(e.dimension,r):a(e.dimension,"clamp");if(t.dimension!==e.dimension+1)throw new Error("ndarray-gradient: output dimension must be +1 input dimension");if(t.shape[e.dimension]!==e.dimension)throw new Error("ndarray-gradient: output shape must match input shape");for(var n=0;n<e.dimension;++n)if(t.shape[n]!==e.shape[n])throw new Error("ndarray-gradient: shape mismatch");if(0===e.size)return t;if(e.dimension<=0)return t.set(0),t;var o=i(r);return o(t,e)}e.exports=o;var a=t("dup"),s=t("cwise-compiler"),l={},u={},c={body:"",args:[],thisVars:[],localVars:[]},h=s({args:["array","array","array"],pre:c,post:c,body:{args:[{name:"out",lvalue:!0,rvalue:!1,count:1},{name:"left",lvalue:!1,rvalue:!0,count:1},{name:"right",lvalue:!1,rvalue:!0,count:1}],body:"out=0.5*(left-right)",thisVars:[],localVars:[]},funcName:"cdiff"}),f=s({args:["array"],pre:c,post:c,body:{args:[{name:"out",lvalue:!0,rvalue:!1,count:1}],body:"out=0",thisVars:[],localVars:[]},funcName:"zero"})},{"cwise-compiler":115,dup:121}],225:[function(t,e,r){"use strict";var n=t("ndarray"),i=t("./doConvert.js");e.exports=function(t,e){for(var r=[],o=t,a=1;o instanceof Array;)r.push(o.length),a*=o.length,o=o[0];return 0===r.length?n():(e||(e=n(new Float64Array(a),r)),i(e,t),e)}},{"./doConvert.js":226,ndarray:433}],226:[function(t,e,r){e.exports=t("cwise-compiler")({args:["array","scalar","index"],pre:{body:"{}",args:[],thisVars:[],localVars:[]},body:{body:"{\nvar _inline_1_v=_inline_1_arg1_,_inline_1_i\nfor(_inline_1_i=0;_inline_1_i<_inline_1_arg2_.length-1;++_inline_1_i) {\n_inline_1_v=_inline_1_v[_inline_1_arg2_[_inline_1_i]]\n}\n_inline_1_arg0_=_inline_1_v[_inline_1_arg2_[_inline_1_arg2_.length-1]]\n}",args:[{name:"_inline_1_arg0_",lvalue:!0,rvalue:!1,count:1},{name:"_inline_1_arg1_",lvalue:!1,rvalue:!0,count:1},{name:"_inline_1_arg2_",lvalue:!1,rvalue:!0,count:4}],thisVars:[],localVars:["_inline_1_i","_inline_1_v"]},post:{body:"{}",args:[],thisVars:[],localVars:[]},funcName:"convert",blockSize:64})},{"cwise-compiler":115}],227:[function(t,e,r){"use strict";function n(t,e,r,n,i){this.position=t,this.index=e,this.uv=r,this.level=n,this.dataCoordinate=i}function i(t){var e=x([y({colormap:t,nshades:O,format:"rgba"}).map(function(t){return[t[0],t[1],t[2],255*t[3]]})]);return b.divseq(e,255),e}function o(t,e,r,i,o,a,s,l,u,c,h,f,d,p){this.gl=t,this.shape=e,this.bounds=r,this.intensityBounds=[],this._shader=i,this._pickShader=o,this._coordinateBuffer=a,this._vao=s,this._colorMap=l,this._contourShader=u,this._contourPickShader=c,this._contourBuffer=h,this._contourVAO=f,this._contourOffsets=[[],[],[]],this._contourCounts=[[],[],[]],this._vertexCount=0,this._pickResult=new n([0,0,0],[0,0],[0,0],[0,0,0],[0,0,0]),this._dynamicBuffer=d,this._dynamicVAO=p,this._dynamicOffsets=[0,0,0],this._dynamicCounts=[0,0,0],this.contourWidth=[1,1,1],this.contourLevels=[[1],[1],[1]],this.contourTint=[0,0,0],this.contourColor=[[.5,.5,.5,1],[.5,.5,.5,1],[.5,.5,.5,1]],this.showContour=!0,this.showSurface=!0,this.enableHighlight=[!0,!0,!0],this.highlightColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.highlightTint=[1,1,1],this.highlightLevel=[-1,-1,-1],this.enableDynamic=[!0,!0,!0],this.dynamicLevel=[NaN,NaN,NaN],this.dynamicColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.dynamicTint=[1,1,1],this.dynamicWidth=[1,1,1],this.axesBounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.surfaceProject=[!1,!1,!1],this.contourProject=[[!1,!1,!1],[!1,!1,!1],[!1,!1,!1]],this.colorBounds=[!1,!1],this._field=[_(g.mallocFloat(1024),[0,0]),_(g.mallocFloat(1024),[0,0]),_(g.mallocFloat(1024),[0,0])],this.pickId=1,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.snapToData=!1,this.opacity=1,this.lightPosition=[10,1e4,0],this.ambientLight=.8,this.diffuseLight=.8,this.specularLight=2,this.roughness=.5,this.fresnel=1.5,this.dirty=!0}function a(t,e){var r,n,i,o=e.axes&&e.axes.lastCubeProps.axis||j,a=e.showSurface,s=e.showContour;for(r=0;3>r;++r)for(a=a||e.surfaceProject[r],n=0;3>n;++n)s=s||e.contourProject[r][n];for(r=0;3>r;++r){var l=N.projections[r];for(n=0;16>n;++n)l[n]=0;for(n=0;4>n;++n)l[5*n]=1;l[5*r]=0,l[12+r]=e.axesBounds[+(o[r]>0)][r],M(l,t.model,l);var u=N.clipBounds[r];for(i=0;2>i;++i)for(n=0;3>n;++n)u[i][n]=t.clipBounds[i][n];u[0][r]=-1e8,u[1][r]=1e8}return N.showSurface=a,N.showContour=s,N}function s(t,e){t=t||{};var r=this.gl;r.disable(r.CULL_FACE),this._colorMap.bind(0);var n=B;n.model=t.model||C,n.view=t.view||C,n.projection=t.projection||C,n.lowerBound=[this.bounds[0][0],this.bounds[0][1],this.colorBounds[0]||this.bounds[0][2]],n.upperBound=[this.bounds[1][0],this.bounds[1][1],this.colorBounds[1]||this.bounds[1][2]],n.contourColor=this.contourColor[0],n.inverseModel=k(n.inverseModel,n.model);for(var i=0;2>i;++i)for(var o=n.clipBounds[i],s=0;3>s;++s)o[s]=Math.min(Math.max(this.clipBounds[i][s],-1e8),1e8);n.kambient=this.ambientLight,n.kdiffuse=this.diffuseLight,n.kspecular=this.specularLight,n.roughness=this.roughness,n.fresnel=this.fresnel,n.opacity=this.opacity,n.height=0,n.permutation=V;var l=U;for(M(l,n.view,n.model),M(l,n.projection,l),k(l,l),i=0;3>i;++i)n.eyePosition[i]=l[12+i]/l[15];var u=l[15];for(i=0;3>i;++i)u+=this.lightPosition[i]*l[4*i+3];for(i=0;3>i;++i){var c=l[12+i];for(s=0;3>s;++s)c+=l[4*s+i]*this.lightPosition[s];n.lightPosition[i]=c/u}var h=a(n,this);if(h.showSurface&&e===this.opacity<1){for(this._shader.bind(),this._shader.uniforms=n,this._vao.bind(),this.showSurface&&this._vertexCount&&this._vao.draw(r.TRIANGLES,this._vertexCount),i=0;3>i;++i)this.surfaceProject[i]&&this.vertexCount&&(this._shader.uniforms.model=h.projections[i],this._shader.uniforms.clipBounds=h.clipBounds[i],this._vao.draw(r.TRIANGLES,this._vertexCount));this._vao.unbind()}if(h.showContour&&!e){var f=this._contourShader;n.kambient=1,n.kdiffuse=0,n.kspecular=0,n.opacity=1,f.bind(),f.uniforms=n;var d=this._contourVAO;for(d.bind(),i=0;3>i;++i)for(f.uniforms.permutation=D[i],r.lineWidth(this.contourWidth[i]),s=0;s<this.contourLevels[i].length;++s)this._contourCounts[i][s]&&(s===this.highlightLevel[i]?(f.uniforms.contourColor=this.highlightColor[i],
+-f.uniforms.contourTint=this.highlightTint[i]):0!==s&&s-1!==this.highlightLevel[i]||(f.uniforms.contourColor=this.contourColor[i],f.uniforms.contourTint=this.contourTint[i]),f.uniforms.height=this.contourLevels[i][s],d.draw(r.LINES,this._contourCounts[i][s],this._contourOffsets[i][s]));for(i=0;3>i;++i)for(f.uniforms.model=h.projections[i],f.uniforms.clipBounds=h.clipBounds[i],s=0;3>s;++s)if(this.contourProject[i][s]){f.uniforms.permutation=D[s],r.lineWidth(this.contourWidth[s]);for(var p=0;p<this.contourLevels[s].length;++p)p===this.highlightLevel[s]?(f.uniforms.contourColor=this.highlightColor[s],f.uniforms.contourTint=this.highlightTint[s]):0!==p&&p-1!==this.highlightLevel[s]||(f.uniforms.contourColor=this.contourColor[s],f.uniforms.contourTint=this.contourTint[s]),f.uniforms.height=this.contourLevels[s][p],d.draw(r.LINES,this._contourCounts[s][p],this._contourOffsets[s][p])}for(d=this._dynamicVAO,d.bind(),i=0;3>i;++i)if(0!==this._dynamicCounts[i])for(f.uniforms.model=n.model,f.uniforms.clipBounds=n.clipBounds,f.uniforms.permutation=D[i],r.lineWidth(this.dynamicWidth[i]),f.uniforms.contourColor=this.dynamicColor[i],f.uniforms.contourTint=this.dynamicTint[i],f.uniforms.height=this.dynamicLevel[i],d.draw(r.LINES,this._dynamicCounts[i],this._dynamicOffsets[i]),s=0;3>s;++s)this.contourProject[s][i]&&(f.uniforms.model=h.projections[s],f.uniforms.clipBounds=h.clipBounds[s],d.draw(r.LINES,this._dynamicCounts[i],this._dynamicOffsets[i]));d.unbind()}}function l(t,e){var r=e.shape.slice(),n=t.shape.slice();b.assign(t.lo(1,1).hi(r[0],r[1]),e),b.assign(t.lo(1).hi(r[0],1),e.hi(r[0],1)),b.assign(t.lo(1,n[1]-1).hi(r[0],1),e.lo(0,r[1]-1).hi(r[0],1)),b.assign(t.lo(0,1).hi(1,r[1]),e.hi(1)),b.assign(t.lo(n[0]-1,1).hi(1,r[1]),e.lo(r[0]-1)),t.set(0,0,e.get(0,0)),t.set(0,n[1]-1,e.get(0,r[1]-1)),t.set(n[0]-1,0,e.get(r[0]-1,0)),t.set(n[0]-1,n[1]-1,e.get(r[0]-1,r[1]-1))}function u(t,e){return Array.isArray(t)?[e(t[0]),e(t[1]),e(t[2])]:[e(t),e(t),e(t)]}function c(t){return Array.isArray(t)?3===t.length?[t[0],t[1],t[2],1]:[t[0],t[1],t[2],t[3]]:[0,0,0,1]}function h(t){if(Array.isArray(t)){if(Array.isArray(t))return[c(t[0]),c(t[1]),c(t[2])];var e=c(t);return[e.slice(),e.slice(),e.slice()]}}function f(t){var e=t.gl,r=S(e),n=z(e),i=L(e),a=I(e),s=p(e),l=v(e,[{buffer:s,size:4,stride:P,offset:0},{buffer:s,size:3,stride:P,offset:16},{buffer:s,size:3,stride:P,offset:28}]),u=p(e),c=v(e,[{buffer:u,size:4,stride:20,offset:0},{buffer:u,size:1,stride:20,offset:16}]),h=p(e),f=v(e,[{buffer:h,size:2,type:e.FLOAT}]),d=m(e,1,O,e.RGBA,e.UNSIGNED_BYTE);d.minFilter=e.LINEAR,d.magFilter=e.LINEAR;var g=new o(e,[0,0],[[0,0,0],[0,0,0]],r,n,s,l,d,i,a,u,c,h,f),y={levels:[[],[],[]]};for(var b in t)y[b]=t[b];return y.colormap=y.colormap||"jet",g.update(y),g}e.exports=f;var d=t("bit-twiddle"),p=t("gl-buffer"),v=t("gl-vao"),m=t("gl-texture2d"),g=t("typedarray-pool"),y=t("colormap"),b=t("ndarray-ops"),x=t("ndarray-pack"),_=t("ndarray"),w=t("surface-nets"),M=t("gl-mat4/multiply"),k=t("gl-mat4/invert"),A=t("binary-search-bounds"),T=t("ndarray-gradient"),E=t("./lib/shaders"),S=E.createShader,L=E.createContourShader,z=E.createPickShader,I=E.createPickContourShader,P=40,C=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],R=[[0,0],[0,1],[1,0],[1,1],[1,0],[0,1]],D=[[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0]];!function(){for(var t=0;3>t;++t){var e=D[t],r=(t+1)%3,n=(t+2)%3;e[r+0]=1,e[n+3]=1,e[t+6]=1}}();var O=265,F=o.prototype;F.isTransparent=function(){return this.opacity<1},F.isOpaque=function(){if(this.opacity>=1)return!0;for(var t=0;3>t;++t)if(this._contourCounts[t].length>0||this._dynamicCounts[t]>0)return!0;return!1},F.pickSlots=1,F.setPickBase=function(t){this.pickId=t};var j=[0,0,0],N={showSurface:!1,showContour:!1,projections:[C.slice(),C.slice(),C.slice()],clipBounds:[[[0,0,0],[0,0,0]],[[0,0,0],[0,0,0]],[[0,0,0],[0,0,0]]]},B={model:C,view:C,projection:C,inverseModel:C.slice(),lowerBound:[0,0,0],upperBound:[0,0,0],colorMap:0,clipBounds:[[0,0,0],[0,0,0]],height:0,contourTint:0,contourColor:[0,0,0,1],permutation:[1,0,0,0,1,0,0,0,1],zOffset:-1e-4,kambient:1,kdiffuse:1,kspecular:1,lightPosition:[1e3,1e3,1e3],eyePosition:[0,0,0],roughness:1,fresnel:1,opacity:1},U=C.slice(),V=[1,0,0,0,1,0,0,0,1];F.draw=function(t){return s.call(this,t,!1)},F.drawTransparent=function(t){return s.call(this,t,!0)};var q={model:C,view:C,projection:C,inverseModel:C,clipBounds:[[0,0,0],[0,0,0]],height:0,shape:[0,0],pickId:0,lowerBound:[0,0,0],upperBound:[0,0,0],zOffset:0,permutation:[1,0,0,0,1,0,0,0,1],lightPosition:[0,0,0],eyePosition:[0,0,0]};F.drawPick=function(t){t=t||{};var e=this.gl;e.disable(e.CULL_FACE);var r=q;r.model=t.model||C,r.view=t.view||C,r.projection=t.projection||C,r.shape=this._field[2].shape,r.pickId=this.pickId/255,r.lowerBound=this.bounds[0],r.upperBound=this.bounds[1],r.permutation=V;for(var n=0;2>n;++n)for(var i=r.clipBounds[n],o=0;3>o;++o)i[o]=Math.min(Math.max(this.clipBounds[n][o],-1e8),1e8);var s=a(r,this);if(s.showSurface){for(this._pickShader.bind(),this._pickShader.uniforms=r,this._vao.bind(),this._vao.draw(e.TRIANGLES,this._vertexCount),n=0;3>n;++n)this.surfaceProject[n]&&(this._pickShader.uniforms.model=s.projections[n],this._pickShader.uniforms.clipBounds=s.clipBounds[n],this._vao.draw(e.TRIANGLES,this._vertexCount));this._vao.unbind()}if(s.showContour){var l=this._contourPickShader;l.bind(),l.uniforms=r;var u=this._contourVAO;for(u.bind(),o=0;3>o;++o)for(e.lineWidth(this.contourWidth[o]),l.uniforms.permutation=D[o],n=0;n<this.contourLevels[o].length;++n)this._contourCounts[o][n]&&(l.uniforms.height=this.contourLevels[o][n],u.draw(e.LINES,this._contourCounts[o][n],this._contourOffsets[o][n]));for(n=0;3>n;++n)for(l.uniforms.model=s.projections[n],l.uniforms.clipBounds=s.clipBounds[n],o=0;3>o;++o)if(this.contourProject[n][o]){l.uniforms.permutation=D[o],e.lineWidth(this.contourWidth[o]);for(var c=0;c<this.contourLevels[o].length;++c)this._contourCounts[o][c]&&(l.uniforms.height=this.contourLevels[o][c],u.draw(e.LINES,this._contourCounts[o][c],this._contourOffsets[o][c]))}u.unbind()}},F.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=this._field[2].shape,r=this._pickResult,n=e[0]*(t.value[0]+(t.value[2]>>4)/16)/255,i=Math.floor(n),o=n-i,a=e[1]*(t.value[1]+(15&t.value[2])/16)/255,s=Math.floor(a),l=a-s;i+=1,s+=1;var u=r.position;u[0]=u[1]=u[2]=0;for(var c=0;2>c;++c)for(var h=c?o:1-o,f=0;2>f;++f)for(var d=f?l:1-l,p=i+c,v=s+f,m=h*d,g=0;3>g;++g)u[g]+=this._field[g].get(p,v)*m;for(var y=this._pickResult.level,b=0;3>b;++b)if(y[b]=A.le(this.contourLevels[b],u[b]),y[b]<0)this.contourLevels[b].length>0&&(y[b]=0);else if(y[b]<this.contourLevels[b].length-1){var x=this.contourLevels[b][y[b]],_=this.contourLevels[b][y[b]+1];Math.abs(x-u[b])>Math.abs(_-u[b])&&(y[b]+=1)}for(r.index[0]=.5>o?i:i+1,r.index[1]=.5>l?s:s+1,r.uv[0]=n/e[0],r.uv[1]=a/e[1],g=0;3>g;++g)r.dataCoordinate[g]=this._field[g].get(r.index[0],r.index[1]);return r},F.update=function(t){t=t||{},this.dirty=!0,"contourWidth"in t&&(this.contourWidth=u(t.contourWidth,Number)),"showContour"in t&&(this.showContour=u(t.showContour,Boolean)),"showSurface"in t&&(this.showSurface=!!t.showSurface),"contourTint"in t&&(this.contourTint=u(t.contourTint,Boolean)),"contourColor"in t&&(this.contourColor=h(t.contourColor)),"contourProject"in t&&(this.contourProject=u(t.contourProject,function(t){return u(t,Boolean)})),"surfaceProject"in t&&(this.surfaceProject=t.surfaceProject),"dynamicColor"in t&&(this.dynamicColor=h(t.dynamicColor)),"dynamicTint"in t&&(this.dynamicTint=u(t.dynamicTint,Number)),"dynamicWidth"in t&&(this.dynamicWidth=u(t.dynamicWidth,Number)),"opacity"in t&&(this.opacity=t.opacity),"colorBounds"in t&&(this.colorBounds=t.colorBounds);var e=t.field||t.coords&&t.coords[2]||null,r=!1;if(e||(e=this._field[2].shape[0]||this._field[2].shape[2]?this._field[2].lo(1,1).hi(this._field[2].shape[0]-2,this._field[2].shape[1]-2):this._field[2].hi(0,0)),"field"in t||"coords"in t){var n=(e.shape[0]+2)*(e.shape[1]+2);n>this._field[2].data.length&&(g.freeFloat(this._field[2].data),this._field[2].data=g.mallocFloat(d.nextPow2(n))),this._field[2]=_(this._field[2].data,[e.shape[0]+2,e.shape[1]+2]),l(this._field[2],e),this.shape=e.shape.slice();for(var o=this.shape,a=0;2>a;++a)this._field[2].size>this._field[a].data.length&&(g.freeFloat(this._field[a].data),this._field[a].data=g.mallocFloat(this._field[2].size)),this._field[a]=_(this._field[a].data,[o[0]+2,o[1]+2]);if(t.coords){var s=t.coords;if(!Array.isArray(s)||3!==s.length)throw new Error("gl-surface: invalid coordinates for x/y");for(a=0;2>a;++a){var c=s[a];for(y=0;2>y;++y)if(c.shape[y]!==o[y])throw new Error("gl-surface: coords have incorrect shape");l(this._field[a],c)}}else if(t.ticks){var f=t.ticks;if(!Array.isArray(f)||2!==f.length)throw new Error("gl-surface: invalid ticks");for(a=0;2>a;++a){var p=f[a];if((Array.isArray(p)||p.length)&&(p=_(p)),p.shape[0]!==o[a])throw new Error("gl-surface: invalid tick length");var v=_(p.data,o);v.stride[a]=p.stride[0],v.stride[1^a]=0,l(this._field[a],v)}}else{for(a=0;2>a;++a){var m=[0,0];m[a]=1,this._field[a]=_(this._field[a].data,[o[0]+2,o[1]+2],m,0)}this._field[0].set(0,0,0);for(var y=0;y<o[0];++y)this._field[0].set(y+1,0,y);for(this._field[0].set(o[0]+1,0,o[0]-1),this._field[1].set(0,0,0),y=0;y<o[1];++y)this._field[1].set(0,y+1,y);this._field[1].set(0,o[1]+1,o[1]-1)}var b=this._field,x=_(g.mallocFloat(3*b[2].size*2),[3,o[0]+2,o[1]+2,2]);for(a=0;3>a;++a)T(x.pick(a),b[a],"mirror");var M=_(g.mallocFloat(3*b[2].size),[o[0]+2,o[1]+2,3]);for(a=0;a<o[0]+2;++a)for(y=0;y<o[1]+2;++y){var k=x.get(0,a,y,0),A=x.get(0,a,y,1),E=x.get(1,a,y,0),S=x.get(1,a,y,1),L=x.get(2,a,y,0),z=x.get(2,a,y,1),I=E*z-S*L,P=L*A-z*k,C=k*S-A*E,D=Math.sqrt(I*I+P*P+C*C);1e-8>D?(D=Math.max(Math.abs(I),Math.abs(P),Math.abs(C)),1e-8>D?(C=1,P=I=0,D=1):D=1/D):D=1/Math.sqrt(D),M.set(a,y,0,I*D),M.set(a,y,1,P*D),M.set(a,y,2,C*D)}g.free(x.data);var O=[1/0,1/0,1/0],F=[-(1/0),-(1/0),-(1/0)],j=1/0,N=-(1/0),B=(o[0]-1)*(o[1]-1)*6,U=g.mallocFloat(d.nextPow2(10*B)),V=0,q=0;for(a=0;a<o[0]-1;++a)t:for(y=0;y<o[1]-1;++y){for(var G=0;2>G;++G)for(var H=0;2>H;++H)for(var X=0;3>X;++X){var Y=this._field[X].get(1+a+G,1+y+H);if(isNaN(Y)||!isFinite(Y))continue t}for(X=0;6>X;++X){var W=a+R[X][0],Z=y+R[X][1],K=this._field[0].get(W+1,Z+1),J=this._field[1].get(W+1,Z+1);Y=this._field[2].get(W+1,Z+1);var $=Y;I=M.get(W+1,Z+1,0),P=M.get(W+1,Z+1,1),C=M.get(W+1,Z+1,2),t.intensity&&($=t.intensity.get(W,Z)),U[V++]=W,U[V++]=Z,U[V++]=K,U[V++]=J,U[V++]=Y,U[V++]=0,U[V++]=$,U[V++]=I,U[V++]=P,U[V++]=C,O[0]=Math.min(O[0],K),O[1]=Math.min(O[1],J),O[2]=Math.min(O[2],Y),j=Math.min(j,$),F[0]=Math.max(F[0],K),F[1]=Math.max(F[1],J),F[2]=Math.max(F[2],Y),N=Math.max(N,$),q+=1}}for(t.intensityBounds&&(j=+t.intensityBounds[0],N=+t.intensityBounds[1]),a=6;V>a;a+=10)U[a]=(U[a]-j)/(N-j);this._vertexCount=q,this._coordinateBuffer.update(U.subarray(0,V)),g.freeFloat(U),g.free(M.data),this.bounds=[O,F],this.intensity=t.intensity||this._field[2],this.intensityBounds[0]===j&&this.intensityBounds[1]===N||(r=!0),this.intensityBounds=[j,N]}if("levels"in t){var Q=t.levels;for(Q=Array.isArray(Q[0])?Q.slice():[[],[],Q],a=0;3>a;++a)Q[a]=Q[a].slice(),Q.sort(function(t,e){return t-e});t:for(a=0;3>a;++a){if(Q[a].length!==this.contourLevels[a].length){r=!0;break}for(y=0;y<Q[a].length;++y)if(Q[a][y]!==this.contourLevels[a][y]){r=!0;break t}}this.contourLevels=Q}if(r){b=this._field,o=this.shape;for(var tt=[],et=0;3>et;++et){Q=this.contourLevels[et];var rt=[],nt=[],it=[0,0,0];for(a=0;a<Q.length;++a){var ot=w(this._field[et],Q[a]);rt.push(tt.length/5|0),q=0;t:for(y=0;y<ot.cells.length;++y){var at=ot.cells[y];for(X=0;2>X;++X){var st=ot.positions[at[X]],lt=st[0],ut=0|Math.floor(lt),ct=lt-ut,ht=st[1],ft=0|Math.floor(ht),dt=ht-ft,pt=!1;e:for(var vt=0;3>vt;++vt){it[vt]=0;var mt=(et+vt+1)%3;for(G=0;2>G;++G){var gt=G?ct:1-ct;for(W=0|Math.min(Math.max(ut+G,0),o[0]),H=0;2>H;++H){var yt=H?dt:1-dt;if(Z=0|Math.min(Math.max(ft+H,0),o[1]),Y=2>vt?this._field[mt].get(W,Z):(this.intensity.get(W,Z)-this.intensityBounds[0])/(this.intensityBounds[1]-this.intensityBounds[0]),!isFinite(Y)||isNaN(Y)){pt=!0;break e}var bt=gt*yt;it[vt]+=bt*Y}}}if(pt){if(X>0){for(var xt=0;5>xt;++xt)tt.pop();q-=1}continue t}tt.push(it[0],it[1],st[0],st[1],it[2]),q+=1}}nt.push(q)}this._contourOffsets[et]=rt,this._contourCounts[et]=nt}var _t=g.mallocFloat(tt.length);for(a=0;a<tt.length;++a)_t[a]=tt[a];this._contourBuffer.update(_t),g.freeFloat(_t)}t.colormap&&this._colorMap.setPixels(i(t.colormap))},F.dispose=function(){this._shader.dispose(),this._vao.dispose(),this._coordinateBuffer.dispose(),this._colorMap.dispose(),this._contourBuffer.dispose(),this._contourVAO.dispose(),this._contourShader.dispose(),this._contourPickShader.dispose(),this._dynamicBuffer.dispose(),this._dynamicVAO.dispose();for(var t=0;3>t;++t)g.freeFloat(this._field[t].data)},F.highlight=function(t){if(!t)return this._dynamicCounts=[0,0,0],this.dyanamicLevel=[NaN,NaN,NaN],void(this.highlightLevel=[-1,-1,-1]);for(var e=0;3>e;++e)this.enableHighlight[e]?this.highlightLevel[e]=t.level[e]:this.highlightLevel[e]=-1;var r;if(r=this.snapToData?t.dataCoordinate:t.position,this.enableDynamic[0]&&r[0]!==this.dynamicLevel[0]||this.enableDynamic[1]&&r[1]!==this.dynamicLevel[1]||this.enableDynamic[2]&&r[2]!==this.dynamicLevel[2]){for(var n=0,i=this.shape,o=g.mallocFloat(12*i[0]*i[1]),a=0;3>a;++a)if(this.enableDynamic[a]){this.dynamicLevel[a]=r[a];var s=(a+1)%3,l=(a+2)%3,u=this._field[a],c=this._field[s],h=this._field[l],f=(this.intensity,w(u,r[a])),d=f.cells,p=f.positions;for(this._dynamicOffsets[a]=n,e=0;e<d.length;++e)for(var v=d[e],m=0;2>m;++m){var y=p[v[m]],b=+y[0],x=0|b,_=0|Math.min(x+1,i[0]),M=b-x,k=1-M,A=+y[1],T=0|A,E=0|Math.min(T+1,i[1]),S=A-T,L=1-S,z=k*L,I=k*S,P=M*L,C=M*S,R=z*c.get(x,T)+I*c.get(x,E)+P*c.get(_,T)+C*c.get(_,E),D=z*h.get(x,T)+I*h.get(x,E)+P*h.get(_,T)+C*h.get(_,E);if(isNaN(R)||isNaN(D)){m&&(n-=1);break}o[2*n+0]=R,o[2*n+1]=D,n+=1}this._dynamicCounts[a]=n-this._dynamicOffsets[a]}else this.dynamicLevel[a]=NaN,this._dynamicCounts[a]=0;this._dynamicBuffer.update(o.subarray(0,2*n)),g.freeFloat(o)}}},{"./lib/shaders":222,"binary-search-bounds":223,"bit-twiddle":51,colormap:106,"gl-buffer":124,"gl-mat4/invert":143,"gl-mat4/multiply":145,"gl-texture2d":228,"gl-vao":232,ndarray:433,"ndarray-gradient":224,"ndarray-ops":432,"ndarray-pack":225,"surface-nets":452,"typedarray-pool":458}],228:[function(t,e,r){"use strict";function n(t){m=[t.LINEAR,t.NEAREST_MIPMAP_LINEAR,t.LINEAR_MIPMAP_NEAREST,t.LINEAR_MIPMAP_NEAREST],g=[t.NEAREST,t.LINEAR,t.NEAREST_MIPMAP_NEAREST,t.NEAREST_MIPMAP_LINEAR,t.LINEAR_MIPMAP_NEAREST,t.LINEAR_MIPMAP_LINEAR],y=[t.REPEAT,t.CLAMP_TO_EDGE,t.MIRRORED_REPEAT]}function i(t,e,r){var n=t.gl,i=n.getParameter(n.MAX_TEXTURE_SIZE);if(0>e||e>i||0>r||r>i)throw new Error("gl-texture2d: Invalid texture size");return t._shape=[e,r],t.bind(),n.texImage2D(n.TEXTURE_2D,0,t.format,e,r,0,t.format,t.type,null),t._mipLevels=[0],t}function o(t,e,r,n,i,o){this.gl=t,this.handle=e,this.format=i,this.type=o,this._shape=[r,n],this._mipLevels=[0],this._magFilter=t.NEAREST,this._minFilter=t.NEAREST,this._wrapS=t.CLAMP_TO_EDGE,this._wrapT=t.CLAMP_TO_EDGE,this._anisoSamples=1;var a=this,s=[this._wrapS,this._wrapT];Object.defineProperties(s,[{get:function(){return a._wrapS},set:function(t){return a.wrapS=t}},{get:function(){return a._wrapT},set:function(t){return a.wrapT=t}}]),this._wrapVector=s;var l=[this._shape[0],this._shape[1]];Object.defineProperties(l,[{get:function(){return a._shape[0]},set:function(t){return a.width=t}},{get:function(){return a._shape[1]},set:function(t){return a.height=t}}]),this._shapeVector=l}function a(t,e){return 3===t.length?1===e[2]&&e[1]===t[0]*t[2]&&e[0]===t[2]:1===e[0]&&e[1]===t[0]}function s(t,e,r,n,i,o,s,l){var u=l.dtype,c=l.shape.slice();if(c.length<2||c.length>3)throw new Error("gl-texture2d: Invalid ndarray, must be 2d or 3d");var h=0,f=0,m=a(c,l.stride.slice());"float32"===u?h=t.FLOAT:"float64"===u?(h=t.FLOAT,m=!1,u="float32"):"uint8"===u?h=t.UNSIGNED_BYTE:(h=t.UNSIGNED_BYTE,m=!1,u="uint8");var g=1;if(2===c.length)f=t.LUMINANCE,c=[c[0],c[1],1],l=d(l.data,c,[l.stride[0],l.stride[1],1],l.offset);else{if(3!==c.length)throw new Error("gl-texture2d: Invalid shape for texture");if(1===c[2])f=t.ALPHA;else if(2===c[2])f=t.LUMINANCE_ALPHA;else if(3===c[2])f=t.RGB;else{if(4!==c[2])throw new Error("gl-texture2d: Invalid shape for pixel coords");f=t.RGBA}g=c[2]}if(f!==t.LUMINANCE&&f!==t.ALPHA||i!==t.LUMINANCE&&i!==t.ALPHA||(f=i),f!==i)throw new Error("gl-texture2d: Incompatible texture format for setPixels");var y=l.size,x=s.indexOf(n)<0;if(x&&s.push(n),h===o&&m)0===l.offset&&l.data.length===y?x?t.texImage2D(t.TEXTURE_2D,n,i,c[0],c[1],0,i,o,l.data):t.texSubImage2D(t.TEXTURE_2D,n,e,r,c[0],c[1],i,o,l.data):x?t.texImage2D(t.TEXTURE_2D,n,i,c[0],c[1],0,i,o,l.data.subarray(l.offset,l.offset+y)):t.texSubImage2D(t.TEXTURE_2D,n,e,r,c[0],c[1],i,o,l.data.subarray(l.offset,l.offset+y));else{var _;_=o===t.FLOAT?v.mallocFloat32(y):v.mallocUint8(y);var w=d(_,c,[c[2],c[2]*c[0],1]);h===t.FLOAT&&o===t.UNSIGNED_BYTE?b(w,l):p.assign(w,l),x?t.texImage2D(t.TEXTURE_2D,n,i,c[0],c[1],0,i,o,_.subarray(0,y)):t.texSubImage2D(t.TEXTURE_2D,n,e,r,c[0],c[1],i,o,_.subarray(0,y)),o===t.FLOAT?v.freeFloat32(_):v.freeUint8(_)}}function l(t){var e=t.createTexture();return 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s=a(n,e.stride.slice()),u=0;"float32"===r?u=t.FLOAT:"float64"===r?(u=t.FLOAT,s=!1,r="float32"):"uint8"===r?u=t.UNSIGNED_BYTE:(u=t.UNSIGNED_BYTE,s=!1,r="uint8");var c=0;if(2===n.length)c=t.LUMINANCE,n=[n[0],n[1],1],e=d(e.data,n,[e.stride[0],e.stride[1],1],e.offset);else{if(3!==n.length)throw new Error("gl-texture2d: Invalid shape for texture");if(1===n[2])c=t.ALPHA;else if(2===n[2])c=t.LUMINANCE_ALPHA;else if(3===n[2])c=t.RGB;else{if(4!==n[2])throw new Error("gl-texture2d: Invalid shape for pixel coords");c=t.RGBA}}u!==t.FLOAT||t.getExtension("OES_texture_float")||(u=t.UNSIGNED_BYTE,s=!1);var h,f,m=e.size;if(s)h=0===e.offset&&e.data.length===m?e.data:e.data.subarray(e.offset,e.offset+m);else{var g=[n[2],n[2]*n[0],1];f=v.malloc(m,r);var y=d(f,n,g,0);"float32"!==r&&"float64"!==r||u!==t.UNSIGNED_BYTE?p.assign(y,e):b(y,e),h=f.subarray(0,m)}var x=l(t);return t.texImage2D(t.TEXTURE_2D,0,c,n[0],n[1],0,c,u,h),s||v.free(f),new o(t,x,n[0],n[1],c,u)}function f(t){if(arguments.length<=1)throw new 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t.serialize()})})}),childLayerIds:this.childLayers.map(function(t){return t.id})}},n.prototype.createFilter=function(){this.filter||(this.filter=l(this.layer.filter))};var d={lastIntegerZoom:1/0,lastIntegerZoomTime:0,lastZoom:0};n.prototype.recalculateStyleLayers=function(){for(var t=0;t<this.childLayers.length;t++)this.childLayers[t].recalculate(this.zoom,d)},n.prototype.getProgramMacros=function(t,e){for(var r=[],n=this.paintAttributes[t][e.id].attributes,i=0;i<n.length;i++){var o=n[i];r.push("ATTRIBUTE_"+(o.isFunction?"ZOOM_FUNCTION_":"")+o.name.toUpperCase())}return r},n.prototype.addPaintAttributes=function(t,e,r,n,i){for(var o=0;o<this.childLayers.length;o++)for(var a=this.childLayers[o],s=this.arrayGroups[t],l=n.index;l<s.length;l++){var u=s[l],c=u.layout.vertex.length,h=u.paint[a.id];h.resize(c);for(var f=this.paintAttributes[t][a.id].attributes,d=0;d<f.length;d++)for(var p=f[d],v=p.getValue(a,e,r),m=p.multiplier||1,g=p.components||1,y=i;c>y;y++)for(var b=h.get(y),x=0;g>x;x++){var _=g>1?p.name+x:p.name;b[_]=v[x]*m}}}},{"../render/vertex_array_object":273,"../util/struct_array":347,"../util/util":349,"./bucket/circle_bucket":248,"./bucket/fill_bucket":249,"./bucket/line_bucket":250,"./bucket/symbol_bucket":251,"./buffer":252,"feature-filter":352}],248:[function(t,e,r){"use strict";function n(){i.apply(this,arguments)}var i=t("../bucket"),o=t("../../util/util"),a=t("../load_geometry"),s=i.EXTENT;e.exports=n,n.prototype=o.inherit(i,{}),n.prototype.addCircleVertex=function(t,e,r,n,i){return t.emplaceBack(2*e+(n+1)/2,2*r+(i+1)/2)},n.prototype.programInterfaces={circle:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"}],paintAttributes:[{name:"a_color",components:4,type:"Uint8",getValue:function(t,e,r){return o.premultiply(t.getPaintValue("circle-color",e,r))},multiplier:255,paintProperty:"circle-color"},{name:"a_radius",components:1,type:"Uint16",isLayerConstant:!1,getValue:function(t,e,r){return[t.getPaintValue("circle-radius",e,r)]},multiplier:10,paintProperty:"circle-radius"}]}},n.prototype.addFeature=function(t){for(var e={zoom:this.zoom},r=a(t),n=this.makeRoomFor("circle",0),i=n.layout.vertex.length,o=0;o<r.length;o++)for(var l=0;l<r[o].length;l++){var u=r[o][l].x,c=r[o][l].y;if(!(0>u||u>=s||0>c||c>=s)){var h=this.makeRoomFor("circle",4),f=h.layout.vertex,d=this.addCircleVertex(f,u,c,-1,-1);this.addCircleVertex(f,u,c,1,-1),this.addCircleVertex(f,u,c,1,1),this.addCircleVertex(f,u,c,-1,1),h.layout.element.emplaceBack(d,d+1,d+2),h.layout.element.emplaceBack(d,d+3,d+2)}}this.addPaintAttributes("circle",e,t.properties,n,i)}},{"../../util/util":349,"../bucket":247,"../load_geometry":254}],249:[function(t,e,r){"use strict";function n(){i.apply(this,arguments)}var i=t("../bucket"),o=t("../../util/util"),a=t("../load_geometry");e.exports=n,n.prototype=o.inherit(i,{}),n.prototype.programInterfaces={fill:{vertexBuffer:!0,elementBuffer:!0,elementBuffer2:!0,elementBuffer2Components:2,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"}]}},n.prototype.addFeature=function(t){for(var e=a(t),r=0;r<e.length;r++)this.addFill(e[r])},n.prototype.addFill=function(t){if(!(t.length<3))for(var e,r,n=t.length,i=this.makeRoomFor("fill",n+1),o=0;o<t.length;o++){var a=t[o],s=i.layout.vertex.emplaceBack(a.x,a.y);0===o&&(e=s),o>=2&&(a.x!==t[0].x||a.y!==t[0].y)&&i.layout.element.emplaceBack(e,r,s),o>=1&&i.layout.element2.emplaceBack(r,s),r=s}}},{"../../util/util":349,"../bucket":247,"../load_geometry":254}],250:[function(t,e,r){"use strict";function n(){i.apply(this,arguments)}var i=t("../bucket"),o=t("../../util/util"),a=t("../load_geometry"),s=i.EXTENT,l=63,u=Math.cos(37.5*(Math.PI/180)),c=15,h=14,f=.5,d=Math.pow(2,h)/f;e.exports=n,n.prototype=o.inherit(i,{}),n.prototype.addLineVertex=function(t,e,r,n,i,o,a){return t.emplaceBack(e.x<<1|n,e.y<<1|i,Math.round(l*r.x)+128,Math.round(l*r.y)+128,(0===o?0:0>o?-1:1)+1|(a*f&63)<<2,a*f>>6)},n.prototype.programInterfaces={line:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"},{name:"a_data",components:4,type:"Uint8"}]}},n.prototype.addFeature=function(t){for(var e=a(t),r=0;r<e.length;r++)this.addLine(e[r],this.layer.layout["line-join"],this.layer.layout["line-cap"],this.layer.layout["line-miter-limit"],this.layer.layout["line-round-limit"])},n.prototype.addLine=function(t,e,r,n,i){for(var o=t.length;o>2&&t[o-1].equals(t[o-2]);)o--;if(!(t.length<2)){"bevel"===e&&(n=1.05);var a=c*(s/(512*this.overscaling)),l=t[0],h=t[o-1],f=l.equals(h);if(this.makeRoomFor("line",10*o),2!==o||!f){this.distance=0;var d,p,v,m,g,y,b,x=r,_=f?"butt":r,w=!0;this.e1=this.e2=this.e3=-1,f&&(d=t[o-2],g=l.sub(d)._unit()._perp());for(var M=0;o>M;M++)if(v=f&&M===o-1?t[1]:t[M+1],!v||!t[M].equals(v)){g&&(m=g),d&&(p=d),d=t[M],g=v?v.sub(d)._unit()._perp():m,m=m||g;var k=m.add(g)._unit(),A=k.x*g.x+k.y*g.y,T=1/A,E=u>A&&p&&v;if(E&&M>0){var S=d.dist(p);if(S>2*a){var L=d.sub(d.sub(p)._mult(a/S)._round());this.distance+=L.dist(p),this.addCurrentVertex(L,this.distance,m.mult(1),0,0,!1),p=L}}var z=p&&v,I=z?e:v?x:_;if(z&&"round"===I&&(i>T?I="miter":2>=T&&(I="fakeround")),"miter"===I&&T>n&&(I="bevel"),"bevel"===I&&(T>2&&(I="flipbevel"),n>T&&(I="miter")),p&&(this.distance+=d.dist(p)),"miter"===I)k._mult(T),this.addCurrentVertex(d,this.distance,k,0,0,!1);else if("flipbevel"===I){if(T>100)k=g.clone();else{var P=m.x*g.y-m.y*g.x>0?-1:1,C=T*m.add(g).mag()/m.sub(g).mag();k._perp()._mult(C*P)}this.addCurrentVertex(d,this.distance,k,0,0,!1),this.addCurrentVertex(d,this.distance,k.mult(-1),0,0,!1)}else if("bevel"===I||"fakeround"===I){var R=m.x*g.y-m.y*g.x>0,D=-Math.sqrt(T*T-1);if(R?(b=0,y=D):(y=0,b=D),w||this.addCurrentVertex(d,this.distance,m,y,b,!1),"fakeround"===I){for(var O,F=Math.floor(8*(.5-(A-.5))),j=0;F>j;j++)O=g.mult((j+1)/(F+1))._add(m)._unit(),this.addPieSliceVertex(d,this.distance,O,R);this.addPieSliceVertex(d,this.distance,k,R);for(var N=F-1;N>=0;N--)O=m.mult((N+1)/(F+1))._add(g)._unit(),this.addPieSliceVertex(d,this.distance,O,R)}v&&this.addCurrentVertex(d,this.distance,g,-y,-b,!1)}else"butt"===I?(w||this.addCurrentVertex(d,this.distance,m,0,0,!1),v&&this.addCurrentVertex(d,this.distance,g,0,0,!1)):"square"===I?(w||(this.addCurrentVertex(d,this.distance,m,1,1,!1),this.e1=this.e2=-1),v&&this.addCurrentVertex(d,this.distance,g,-1,-1,!1)):"round"===I&&(w||(this.addCurrentVertex(d,this.distance,m,0,0,!1),this.addCurrentVertex(d,this.distance,m,1,1,!0),this.e1=this.e2=-1),v&&(this.addCurrentVertex(d,this.distance,g,-1,-1,!0),this.addCurrentVertex(d,this.distance,g,0,0,!1)));if(E&&o-1>M){var B=d.dist(v);if(B>2*a){var U=d.add(v.sub(d)._mult(a/B)._round());this.distance+=U.dist(d),this.addCurrentVertex(U,this.distance,g.mult(1),0,0,!1),d=U}}w=!1}}}},n.prototype.addCurrentVertex=function(t,e,r,n,i,o){var a,s=o?1:0,l=this.arrayGroups.line[this.arrayGroups.line.length-1].layout,u=l.vertex,c=l.element;a=r.clone(),n&&a._sub(r.perp()._mult(n)),this.e3=this.addLineVertex(u,t,a,s,0,n,e),this.e1>=0&&this.e2>=0&&c.emplaceBack(this.e1,this.e2,this.e3),this.e1=this.e2,this.e2=this.e3,a=r.mult(-1),i&&a._sub(r.perp()._mult(i)),this.e3=this.addLineVertex(u,t,a,s,1,-i,e),this.e1>=0&&this.e2>=0&&c.emplaceBack(this.e1,this.e2,this.e3),this.e1=this.e2,this.e2=this.e3,e>d/2&&(this.distance=0,this.addCurrentVertex(t,this.distance,r,n,i,o))},n.prototype.addPieSliceVertex=function(t,e,r,n){var i=n?1:0;r=r.mult(n?-1:1);var o=this.arrayGroups.line[this.arrayGroups.line.length-1].layout,a=o.vertex,s=o.element;this.e3=this.addLineVertex(a,t,r,0,i,0,e),this.e1>=0&&this.e2>=0&&s.emplaceBack(this.e1,this.e2,this.e3),n?this.e2=this.e3:this.e1=this.e3}},{"../../util/util":349,"../bucket":247,"../load_geometry":254}],251:[function(t,e,r){"use strict";function n(t){s.apply(this,arguments),this.showCollisionBoxes=t.showCollisionBoxes,this.overscaling=t.overscaling,this.collisionBoxArray=t.collisionBoxArray,this.sdfIcons=t.sdfIcons,this.iconsNeedLinear=t.iconsNeedLinear,this.adjustedTextSize=t.adjustedTextSize,this.adjustedIconSize=t.adjustedIconSize,this.fontstack=t.fontstack}function i(t,e,r,n,i,o,a,s,l,u){return t.emplaceBack(e,r,Math.round(64*n),Math.round(64*i),o/4,a/4,10*(u||0),0,10*(s||0),10*Math.min(l||25,25))}function o(t,e,r,n,i,o,a,s,l,u,c,h,f,d,p,v,m){this.x=t.x,this.y=t.y,this.index=a,this.hasText=!!r,this.hasIcon=!!n,this.hasText&&(this.glyphQuads=o?_(t,r,h,e,i,d):[],this.textCollisionFeature=new y(s,e,t,l,u,c,r,h,f,d,!1)),this.hasIcon&&(this.iconQuads=o?w(t,n,p,e,i,m):[],this.iconCollisionFeature=new y(s,e,t,l,u,c,n,p,v,m,!0))}var a=t("point-geometry"),s=t("../bucket"),l=t("../../symbol/anchor"),u=t("../../symbol/get_anchors"),c=t("../../util/token"),h=t("../../symbol/quads"),f=t("../../symbol/shaping"),d=t("../../symbol/resolve_text"),p=t("../../symbol/mergelines"),v=t("../../symbol/clip_line"),m=t("../../util/util"),g=t("../load_geometry"),y=t("../../symbol/collision_feature"),b=f.shapeText,x=f.shapeIcon,_=h.getGlyphQuads,w=h.getIconQuads,M=s.EXTENT;e.exports=n,n.prototype=m.inherit(s,{}),n.prototype.serialize=function(){var t=s.prototype.serialize.apply(this);return t.sdfIcons=this.sdfIcons,t.iconsNeedLinear=this.iconsNeedLinear,t.adjustedTextSize=this.adjustedTextSize,t.adjustedIconSize=this.adjustedIconSize,t.fontstack=this.fontstack,t};var k=[{name:"a_pos",components:2,type:"Int16"},{name:"a_offset",components:2,type:"Int16"},{name:"a_data1",components:4,type:"Uint8"},{name:"a_data2",components:2,type:"Uint8"}];n.prototype.addCollisionBoxVertex=function(t,e,r,n,i){return t.emplaceBack(e.x,e.y,Math.round(r.x),Math.round(r.y),10*n,10*i)},n.prototype.programInterfaces={glyph:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:k},icon:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:k},collisionBox:{vertexBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"},{name:"a_extrude",components:2,type:"Int16"},{name:"a_data",components:2,type:"Uint8"}]}},n.prototype.populateBuffers=function(t,e,r){var n={lastIntegerZoom:1/0,lastIntegerZoomTime:0,lastZoom:0};this.adjustedTextMaxSize=this.layer.getLayoutValue("text-size",{zoom:18,zoomHistory:n}),this.adjustedTextSize=this.layer.getLayoutValue("text-size",{zoom:this.zoom+1,zoomHistory:n}),this.adjustedIconMaxSize=this.layer.getLayoutValue("icon-size",{zoom:18,zoomHistory:n}),this.adjustedIconSize=this.layer.getLayoutValue("icon-size",{zoom:this.zoom+1,zoomHistory:n});var i=512*this.overscaling;this.tilePixelRatio=M/i,this.compareText={},this.symbolInstances=[],this.iconsNeedLinear=!1;var o=this.layer.layout,a=this.features,s=this.textFeatures,l=.5,u=.5;switch(o["text-anchor"]){case"right":case"top-right":case"bottom-right":l=1;break;case"left":case"top-left":case"bottom-left":l=0}switch(o["text-anchor"]){case"bottom":case"bottom-right":case"bottom-left":u=1;break;case"top":case"top-right":case"top-left":u=0}for(var h="right"===o["text-justify"]?1:"left"===o["text-justify"]?0:.5,f=24,d=o["text-line-height"]*f,v="line"!==o["symbol-placement"]?o["text-max-width"]*f:0,m=o["text-letter-spacing"]*f,y=[o["text-offset"][0]*f,o["text-offset"][1]*f],_=this.fontstack=o["text-font"].join(","),w=[],k=0;k<a.length;k++)w.push(g(a[k]));if("line"===o["symbol-placement"]){var A=p(a,s,w);w=A.geometries,a=A.features,s=A.textFeatures}for(var T,E,S=0;S<a.length;S++)if(w[S]){if(T=s[S]?b(s[S],e[_],v,d,l,u,h,m,y):null,o["icon-image"]){var L=c(a[S].properties,o["icon-image"]),z=r[L];E=x(z,o),z&&(void 0===this.sdfIcons?this.sdfIcons=z.sdf:this.sdfIcons!==z.sdf&&console.warn("Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer"),1!==z.pixelRatio&&(this.iconsNeedLinear=!0))}else E=null;(T||E)&&this.addFeature(w[S],T,E,a[S].index)}this.placeFeatures(t,this.showCollisionBoxes),this.trimArrays()},n.prototype.addFeature=function(t,e,r,n){var i=this.layer.layout,a=24,s=this.adjustedTextSize/a,c=void 0!==this.adjustedTextMaxSize?this.adjustedTextMaxSize:this.adjustedTextSize,h=this.tilePixelRatio*s,f=this.tilePixelRatio*c/a,d=this.tilePixelRatio*this.adjustedIconSize,p=this.tilePixelRatio*i["symbol-spacing"],m=i["symbol-avoid-edges"],g=i["text-padding"]*this.tilePixelRatio,y=i["icon-padding"]*this.tilePixelRatio,b=i["text-max-angle"]/180*Math.PI,x="map"===i["text-rotation-alignment"]&&"line"===i["symbol-placement"],_="map"===i["icon-rotation-alignment"]&&"line"===i["symbol-placement"],w=i["text-allow-overlap"]||i["icon-allow-overlap"]||i["text-ignore-placement"]||i["icon-ignore-placement"],k="line"===i["symbol-placement"],A=p/2;k&&(t=v(t,0,0,M,M));for(var T=0;T<t.length;T++){var E,S=t[T];E=k?u(S,p,b,e,r,a,f,this.overscaling,M):[new l(S[0].x,S[0].y,0)];for(var L=0,z=E.length;z>L;L++){var I=E[L];if(!(e&&k&&this.anchorIsTooClose(e.text,A,I))){var P=!(I.x<0||I.x>M||I.y<0||I.y>M);if(!m||P){var C=P||w;this.symbolInstances.push(new o(I,S,e,r,i,C,this.symbolInstances.length,this.collisionBoxArray,n,this.sourceLayerIndex,this.index,h,g,x,d,y,_))}}}}},n.prototype.anchorIsTooClose=function(t,e,r){var n=this.compareText;if(t in n){for(var i=n[t],o=i.length-1;o>=0;o--)if(r.dist(i[o])<e)return!0}else n[t]=[];return n[t].push(r),!1},n.prototype.placeFeatures=function(t,e){this.recalculateStyleLayers(),this.createArrays();var r=this.layer.layout,n=t.maxScale,i="map"===r["text-rotation-alignment"]&&"line"===r["symbol-placement"],o="map"===r["icon-rotation-alignment"]&&"line"===r["symbol-placement"],a=r["text-allow-overlap"]||r["icon-allow-overlap"]||r["text-ignore-placement"]||r["icon-ignore-placement"];if(a){var s=t.angle,l=Math.sin(s),u=Math.cos(s);this.symbolInstances.sort(function(t,e){var r=l*t.x+u*t.y|0,n=l*e.x+u*e.y|0;return r-n||e.index-t.index})}for(var c=0;c<this.symbolInstances.length;c++){var h=this.symbolInstances[c],f=h.hasText,d=h.hasIcon,p=r["text-optional"]||!f,v=r["icon-optional"]||!d,m=f?t.placeCollisionFeature(h.textCollisionFeature,r["text-allow-overlap"],r["symbol-avoid-edges"]):t.minScale,g=d?t.placeCollisionFeature(h.iconCollisionFeature,r["icon-allow-overlap"],r["symbol-avoid-edges"]):t.minScale;p||v?!v&&m?m=Math.max(g,m):!p&&g&&(g=Math.max(g,m)):g=m=Math.max(g,m),f&&(t.insertCollisionFeature(h.textCollisionFeature,m,r["text-ignore-placement"]),n>=m&&this.addSymbols("glyph",h.glyphQuads,m,r["text-keep-upright"],i,t.angle)),d&&(t.insertCollisionFeature(h.iconCollisionFeature,g,r["icon-ignore-placement"]),n>=g&&this.addSymbols("icon",h.iconQuads,g,r["icon-keep-upright"],o,t.angle))}e&&this.addToDebugBuffers(t)},n.prototype.addSymbols=function(t,e,r,n,o,a){for(var s=this.makeRoomFor(t,4*e.length),l=s.layout.element,u=s.layout.vertex,c=this.zoom,h=Math.max(Math.log(r)/Math.LN2+c,0),f=0;f<e.length;f++){var d=e[f],p=d.angle,v=(p+a+Math.PI)%(2*Math.PI);if(!(n&&o&&(v<=Math.PI/2||v>3*Math.PI/2))){var m=d.tl,g=d.tr,y=d.bl,b=d.br,x=d.tex,_=d.anchorPoint,w=Math.max(c+Math.log(d.minScale)/Math.LN2,h),M=Math.min(c+Math.log(d.maxScale)/Math.LN2,25);if(!(w>=M)){w===h&&(w=0);var k=i(u,_.x,_.y,m.x,m.y,x.x,x.y,w,M,h);i(u,_.x,_.y,g.x,g.y,x.x+x.w,x.y,w,M,h),i(u,_.x,_.y,y.x,y.y,x.x,x.y+x.h,w,M,h),i(u,_.x,_.y,b.x,b.y,x.x+x.w,x.y+x.h,w,M,h),l.emplaceBack(k,k+1,k+2),l.emplaceBack(k+1,k+2,k+3)}}}},n.prototype.updateIcons=function(t){this.recalculateStyleLayers();var e=this.layer.layout["icon-image"];if(e)for(var r=0;r<this.features.length;r++){var n=c(this.features[r].properties,e);n&&(t[n]=!0)}},n.prototype.updateFont=function(t){this.recalculateStyleLayers();var e=this.layer.layout["text-font"],r=t[e]=t[e]||{};this.textFeatures=d(this.features,this.layer.layout,r)},n.prototype.addToDebugBuffers=function(t){for(var e=this.makeRoomFor("collisionBox",0),r=e.layout.vertex,n=-t.angle,i=t.yStretch,o=0;o<this.symbolInstances.length;o++)for(var s=0;2>s;s++){var l=this.symbolInstances[o][0===s?"textCollisionFeature":"iconCollisionFeature"];if(l)for(var u=l.boxStartIndex;u<l.boxEndIndex;u++){var c=this.collisionBoxArray.get(u),h=c.anchorPoint,f=new a(c.x1,c.y1*i)._rotate(n),d=new a(c.x2,c.y1*i)._rotate(n),p=new a(c.x1,c.y2*i)._rotate(n),v=new a(c.x2,c.y2*i)._rotate(n),m=Math.max(0,Math.min(25,this.zoom+Math.log(c.maxScale)/Math.LN2)),g=Math.max(0,Math.min(25,this.zoom+Math.log(c.placementScale)/Math.LN2));this.addCollisionBoxVertex(r,h,f,m,g),this.addCollisionBoxVertex(r,h,d,m,g),this.addCollisionBoxVertex(r,h,d,m,g),this.addCollisionBoxVertex(r,h,v,m,g),this.addCollisionBoxVertex(r,h,v,m,g),this.addCollisionBoxVertex(r,h,p,m,g),this.addCollisionBoxVertex(r,h,p,m,g),this.addCollisionBoxVertex(r,h,f,m,g)}}}},{"../../symbol/anchor":303,"../../symbol/clip_line":305,"../../symbol/collision_feature":307,"../../symbol/get_anchors":309,
+-"../../symbol/mergelines":312,"../../symbol/quads":313,"../../symbol/resolve_text":314,"../../symbol/shaping":315,"../../util/token":348,"../../util/util":349,"../bucket":247,"../load_geometry":254,"point-geometry":404}],252:[function(t,e,r){"use strict";function n(t,e,r){this.arrayBuffer=t.arrayBuffer,this.length=t.length,this.attributes=e.members,this.itemSize=e.bytesPerElement,this.type=r,this.arrayType=e}var i=t("assert");e.exports=n,n.prototype.bind=function(t){var e=t[this.type];this.buffer?t.bindBuffer(e,this.buffer):(this.buffer=t.createBuffer(),t.bindBuffer(e,this.buffer),t.bufferData(e,this.arrayBuffer,t.STATIC_DRAW),this.arrayBuffer=null)};var o={Int8:"BYTE",Uint8:"UNSIGNED_BYTE",Int16:"SHORT",Uint16:"UNSIGNED_SHORT"};n.prototype.setVertexAttribPointers=function(t,e){for(var r=0;r<this.attributes.length;r++){var n=this.attributes[r],a=e[n.name];i(void 0!==a,'array member "'+n.name+'" name does not match shader attribute name'),t.vertexAttribPointer(a,n.components,t[o[n.type]],!1,this.arrayType.bytesPerElement,n.offset)}},n.prototype.destroy=function(t){this.buffer&&t.deleteBuffer(this.buffer)},n.BufferType={VERTEX:"ARRAY_BUFFER",ELEMENT:"ELEMENT_ARRAY_BUFFER"},n.ELEMENT_ATTRIBUTE_TYPE="Uint16",n.VERTEX_ATTRIBUTE_ALIGNMENT=4},{assert:52}],253:[function(t,e,r){"use strict";function n(t,e,r){if(t.grid){var n=t,i=e;t=n.coord,e=n.overscaling,this.grid=new p(n.grid),this.featureIndexArray=new k(n.featureIndexArray),this.rawTileData=i,this.bucketLayerIDs=n.bucketLayerIDs}else this.grid=new p(h,16,0),this.featureIndexArray=new k;this.coord=t,this.overscaling=e,this.x=t.x,this.y=t.y,this.z=t.z-Math.log(e)/Math.LN2,this.setCollisionTile(r)}function i(t){return Math.sqrt(t[0]*t[0]+t[1]*t[1])}function o(t,e){return e-t}function a(t){return t["line-gap-width"]>0?t["line-gap-width"]+2*t["line-width"]:t["line-width"]}function s(t,e,r,n,i){if(!e[0]&&!e[1])return t;e=u.convert(e),"viewport"===r&&e._rotate(-n);for(var o=[],a=0;a<t.length;a++){for(var s=t[a],l=[],c=0;c<s.length;c++)l.push(s[c].sub(e._mult(i)));o.push(l)}return o}function l(t,e){for(var r=[],n=new u(0,0),i=0;i<t.length;i++){for(var o=t[i],a=[],s=0;s<o.length;s++){var l=o[s-1],c=o[s],h=o[s+1],f=0===s?n:c.sub(l)._unit()._perp(),d=s===o.length-1?n:h.sub(c)._unit()._perp(),p=f._add(d)._unit(),v=p.x*d.x+p.y*d.y;p._mult(1/v),a.push(p._mult(e)._add(c))}r.push(a)}return r}var u=t("point-geometry"),c=t("./load_geometry"),h=t("./bucket").EXTENT,f=t("feature-filter"),d=t("../util/struct_array"),p=t("grid-index"),v=t("../util/dictionary_coder"),m=t("vector-tile"),g=t("pbf"),y=t("../util/vectortile_to_geojson"),b=t("../util/util").arraysIntersect,x=t("../util/intersection_tests"),_=x.multiPolygonIntersectsBufferedMultiPoint,w=x.multiPolygonIntersectsMultiPolygon,M=x.multiPolygonIntersectsBufferedMultiLine,k=new d({members:[{type:"Uint32",name:"featureIndex"},{type:"Uint16",name:"sourceLayerIndex"},{type:"Uint16",name:"bucketIndex"}]});e.exports=n,n.prototype.insert=function(t,e,r,n){var i=this.featureIndexArray.length;this.featureIndexArray.emplaceBack(e,r,n);for(var o=c(t),a=0;a<o.length;a++){for(var s=o[a],l=[1/0,1/0,-(1/0),-(1/0)],u=0;u<s.length;u++){var h=s[u];l[0]=Math.min(l[0],h.x),l[1]=Math.min(l[1],h.y),l[2]=Math.max(l[2],h.x),l[3]=Math.max(l[3],h.y)}this.grid.insert(i,l[0],l[1],l[2],l[3])}},n.prototype.setCollisionTile=function(t){this.collisionTile=t},n.prototype.serialize=function(){var t={coord:this.coord,overscaling:this.overscaling,grid:this.grid.toArrayBuffer(),featureIndexArray:this.featureIndexArray.serialize(),bucketLayerIDs:this.bucketLayerIDs};return{data:t,transferables:[t.grid,t.featureIndexArray.arrayBuffer]}},n.prototype.query=function(t,e){this.vtLayers||(this.vtLayers=new m.VectorTile(new g(new Uint8Array(this.rawTileData))).layers,this.sourceLayerCoder=new v(this.vtLayers?Object.keys(this.vtLayers).sort():["_geojsonTileLayer"]));var r={},n=t.params||{},s=h/t.tileSize/t.scale,l=f(n.filter),c=0;for(var d in e){var p=e[d],y=p.paint,b=0;"line"===p.type?b=a(y)/2+Math.abs(y["line-offset"])+i(y["line-translate"]):"fill"===p.type?b=i(y["fill-translate"]):"circle"===p.type&&(b=y["circle-radius"]+i(y["circle-translate"])),c=Math.max(c,b*s)}for(var x=t.queryGeometry.map(function(t){return t.map(function(t){return new u(t.x,t.y)})}),_=1/0,w=1/0,M=-(1/0),k=-(1/0),A=0;A<x.length;A++)for(var T=x[A],E=0;E<T.length;E++){var S=T[E];_=Math.min(_,S.x),w=Math.min(w,S.y),M=Math.max(M,S.x),k=Math.max(k,S.y)}var L=this.grid.query(_-c,w-c,M+c,k+c);L.sort(o),this.filterMatching(r,L,this.featureIndexArray,x,l,n.layers,e,t.bearing,s);var z=this.collisionTile.queryRenderedSymbols(_,w,M,k,t.scale);return z.sort(),this.filterMatching(r,z,this.collisionTile.collisionBoxArray,x,l,n.layers,e,t.bearing,s),r},n.prototype.filterMatching=function(t,e,r,n,i,o,u,h,f){for(var d,p=0;p<e.length;p++){var v=e[p];if(v!==d){d=v;var m=r.get(v),g=this.bucketLayerIDs[m.bucketIndex];if(!o||b(o,g)){var x=this.sourceLayerCoder.decode(m.sourceLayerIndex),k=this.vtLayers[x],A=k.feature(m.featureIndex);if(i(A))for(var T=null,E=0;E<g.length;E++){var S=g[E];if(!(o&&o.indexOf(S)<0)){var L=u[S];if(L){var z;if("symbol"!==L.type){T||(T=c(A));var I=L.paint;if("line"===L.type){z=s(n,I["line-translate"],I["line-translate-anchor"],h,f);var P=a(I)/2*f;if(I["line-offset"]&&(T=l(T,I["line-offset"]*f)),!M(z,T,P))continue}else if("fill"===L.type){if(z=s(n,I["fill-translate"],I["fill-translate-anchor"],h,f),!w(z,T))continue}else if("circle"===L.type){z=s(n,I["circle-translate"],I["circle-translate-anchor"],h,f);var C=I["circle-radius"]*f;if(!_(z,T,C))continue}}var R=new y(A,this.z,this.x,this.y);R.layer=L.serialize({includeRefProperties:!0});var D=t[S];void 0===D&&(D=t[S]=[]),D.push(R)}}}}}}}},{"../util/dictionary_coder":340,"../util/intersection_tests":344,"../util/struct_array":347,"../util/util":349,"../util/vectortile_to_geojson":350,"./bucket":247,"./load_geometry":254,"feature-filter":352,"grid-index":373,pbf:402,"point-geometry":404,"vector-tile":413}],254:[function(t,e,r){"use strict";var n=t("./bucket").EXTENT,i=-2*n,o=2*n-1,a=!1;e.exports=function(t){for(var e=n/t.extent,r=t.loadGeometry(),s=0;s<r.length;s++)for(var l=r[s],u=0;u<l.length;u++){var c=l[u];c.x=Math.round(c.x*e),c.y=Math.round(c.y*e),a===!1&&(c.x<i||c.x>o||c.y<i||c.y>o)&&(console.warn("Geometry exceeds allowed extent, reduce your vector tile buffer size"),a=!0)}return r}},{"./bucket":247}],255:[function(t,e,r){"use strict";function n(t,e,r){this.column=t,this.row=e,this.zoom=r}e.exports=n,n.prototype={clone:function(){return new n(this.column,this.row,this.zoom)},zoomTo:function(t){return this.clone()._zoomTo(t)},sub:function(t){return this.clone()._sub(t)},_zoomTo:function(t){var e=Math.pow(2,t-this.zoom);return this.column*=e,this.row*=e,this.zoom=t,this},_sub:function(t){return t=t.zoomTo(this.zoom),this.column-=t.column,this.row-=t.row,this}}},{}],256:[function(t,e,r){"use strict";function n(t,e){if(isNaN(t)||isNaN(e))throw new Error("Invalid LngLat object: ("+t+", "+e+")");if(this.lng=+t,this.lat=+e,this.lat>90||this.lat<-90)throw new Error("Invalid LngLat latitude value: must be between -90 and 90")}e.exports=n;var i=t("../util/util").wrap;n.prototype.wrap=function(){return new n(i(this.lng,-180,180),this.lat)},n.prototype.toArray=function(){return[this.lng,this.lat]},n.prototype.toString=function(){return"LngLat("+this.lng+", "+this.lat+")"},n.convert=function(t){return t instanceof n?t:Array.isArray(t)?new n(t[0],t[1]):t}},{"../util/util":349}],257:[function(t,e,r){"use strict";function n(t,e){t&&(e?this.extend(t).extend(e):4===t.length?this.extend([t[0],t[1]]).extend([t[2],t[3]]):this.extend(t[0]).extend(t[1]))}e.exports=n;var i=t("./lng_lat");n.prototype={extend:function(t){var e,r,o=this._sw,a=this._ne;if(t instanceof i)e=t,r=t;else{if(!(t instanceof n))return t?this.extend(i.convert(t)||n.convert(t)):this;if(e=t._sw,r=t._ne,!e||!r)return this}return o||a?(o.lng=Math.min(e.lng,o.lng),o.lat=Math.min(e.lat,o.lat),a.lng=Math.max(r.lng,a.lng),a.lat=Math.max(r.lat,a.lat)):(this._sw=new i(e.lng,e.lat),this._ne=new i(r.lng,r.lat)),this},getCenter:function(){return new i((this._sw.lng+this._ne.lng)/2,(this._sw.lat+this._ne.lat)/2)},getSouthWest:function(){return this._sw},getNorthEast:function(){return this._ne},getNorthWest:function(){return new i(this.getWest(),this.getNorth())},getSouthEast:function(){return new i(this.getEast(),this.getSouth())},getWest:function(){return this._sw.lng},getSouth:function(){return this._sw.lat},getEast:function(){return this._ne.lng},getNorth:function(){return this._ne.lat},toArray:function(){return[this._sw.toArray(),this._ne.toArray()]},toString:function(){return"LngLatBounds("+this._sw.toString()+", "+this._ne.toString()+")"}},n.convert=function(t){return!t||t instanceof n?t:new n(t)}},{"./lng_lat":256}],258:[function(t,e,r){"use strict";function n(t,e){this.tileSize=512,this._minZoom=t||0,this._maxZoom=e||22,this.latRange=[-85.05113,85.05113],this.width=0,this.height=0,this._center=new i(0,0),this.zoom=0,this.angle=0,this._altitude=1.5,this._pitch=0,this._unmodified=!0}var i=t("./lng_lat"),o=t("point-geometry"),a=t("./coordinate"),s=t("../util/util").wrap,l=t("../util/interpolate"),u=t("../source/tile_coord"),c=t("../data/bucket").EXTENT,h=t("gl-matrix"),f=h.vec4,d=h.mat4,p=h.mat2;e.exports=n,n.prototype={get minZoom(){return this._minZoom},set minZoom(t){this._minZoom!==t&&(this._minZoom=t,this.zoom=Math.max(this.zoom,t))},get maxZoom(){return this._maxZoom},set maxZoom(t){this._maxZoom!==t&&(this._maxZoom=t,this.zoom=Math.min(this.zoom,t))},get worldSize(){return this.tileSize*this.scale},get centerPoint(){return this.size._div(2)},get size(){return new o(this.width,this.height)},get bearing(){return-this.angle/Math.PI*180},set bearing(t){var e=-s(t,-180,180)*Math.PI/180;this.angle!==e&&(this._unmodified=!1,this.angle=e,this._calcProjMatrix(),this.rotationMatrix=p.create(),p.rotate(this.rotationMatrix,this.rotationMatrix,this.angle))},get pitch(){return this._pitch/Math.PI*180},set pitch(t){var e=Math.min(60,t)/180*Math.PI;this._pitch!==e&&(this._unmodified=!1,this._pitch=e,this._calcProjMatrix())},get altitude(){return this._altitude},set altitude(t){var e=Math.max(.75,t);this._altitude!==e&&(this._unmodified=!1,this._altitude=e,this._calcProjMatrix())},get zoom(){return this._zoom},set zoom(t){var e=Math.min(Math.max(t,this.minZoom),this.maxZoom);this._zoom!==e&&(this._unmodified=!1,this._zoom=e,this.scale=this.zoomScale(e),this.tileZoom=Math.floor(e),this.zoomFraction=e-this.tileZoom,this._calcProjMatrix(),this._constrain())},get center(){return this._center},set center(t){t.lat===this._center.lat&&t.lng===this._center.lng||(this._unmodified=!1,this._center=t,this._calcProjMatrix(),this._constrain())},resize:function(t,e){this.width=t,this.height=e,this.pixelsToGLUnits=[2/t,-2/e],this._calcProjMatrix(),this._constrain()},get unmodified(){return this._unmodified},zoomScale:function(t){return Math.pow(2,t)},scaleZoom:function(t){return Math.log(t)/Math.LN2},project:function(t,e){return new o(this.lngX(t.lng,e),this.latY(t.lat,e))},unproject:function(t,e){return new i(this.xLng(t.x,e),this.yLat(t.y,e))},get x(){return this.lngX(this.center.lng)},get y(){return this.latY(this.center.lat)},get point(){return new o(this.x,this.y)},lngX:function(t,e){return(180+t)*(e||this.worldSize)/360},latY:function(t,e){var r=180/Math.PI*Math.log(Math.tan(Math.PI/4+t*Math.PI/360));return(180-r)*(e||this.worldSize)/360},xLng:function(t,e){return 360*t/(e||this.worldSize)-180},yLat:function(t,e){var r=180-360*t/(e||this.worldSize);return 360/Math.PI*Math.atan(Math.exp(r*Math.PI/180))-90},panBy:function(t){var e=this.centerPoint._add(t);this.center=this.pointLocation(e)},setLocationAtPoint:function(t,e){var r=this.locationCoordinate(t),n=this.pointCoordinate(e),i=this.pointCoordinate(this.centerPoint),o=n._sub(r);this._unmodified=!1,this.center=this.coordinateLocation(i._sub(o))},locationPoint:function(t){return this.coordinatePoint(this.locationCoordinate(t))},pointLocation:function(t){return this.coordinateLocation(this.pointCoordinate(t))},locationCoordinate:function(t){var e=this.zoomScale(this.tileZoom)/this.worldSize,r=i.convert(t);return new a(this.lngX(r.lng)*e,this.latY(r.lat)*e,this.tileZoom)},coordinateLocation:function(t){var e=this.zoomScale(t.zoom);return new i(this.xLng(t.column,e),this.yLat(t.row,e))},pointCoordinate:function(t){var e=0,r=this.coordinatePointMatrix(this.tileZoom);if(d.invert(r,r),!r)throw new Error("failed to invert matrix");var n=[t.x,t.y,0,1],i=[t.x,t.y,1,1];f.transformMat4(n,n,r),f.transformMat4(i,i,r);var o=n[3],s=i[3],u=n[0]/o,c=i[0]/s,h=n[1]/o,p=i[1]/s,v=n[2]/o,m=i[2]/s,g=v===m?0:(e-v)/(m-v);return new a(l(u,c,g),l(h,p,g),this.tileZoom)},coordinatePoint:function(t){var e=this.coordinatePointMatrix(t.zoom),r=[t.column,t.row,0,1];return f.transformMat4(r,r,e),new o(r[0]/r[3],r[1]/r[3])},coordinatePointMatrix:function(t){var e=d.copy(new Float64Array(16),this.projMatrix),r=this.worldSize/this.zoomScale(t);return d.scale(e,e,[r,r,1]),d.multiply(e,this.getPixelMatrix(),e),e},getPixelMatrix:function(){var t=d.create();return d.scale(t,t,[this.width/2,-this.height/2,1]),d.translate(t,t,[1,-1,0]),t},calculatePosMatrix:function(t,e){void 0===e&&(e=1/0),t instanceof u&&(t=t.toCoordinate(e));var r=Math.min(t.zoom,e),n=this.worldSize/Math.pow(2,r),i=new Float64Array(16);return d.identity(i),d.translate(i,i,[t.column*n,t.row*n,0]),d.scale(i,i,[n/c,n/c,1]),d.multiply(i,this.projMatrix,i),new Float32Array(i)},_constrain:function(){if(this.center&&this.width&&this.height&&!this._constraining){this._constraining=!0;var t,e,r,n,i,a,s,l,u=this.size,c=this._unmodified;this.latRange&&(t=this.latY(this.latRange[1]),e=this.latY(this.latRange[0]),i=e-t<u.y?u.y/(e-t):0),this.lngRange&&(r=this.lngX(this.lngRange[0]),n=this.lngX(this.lngRange[1]),a=n-r<u.x?u.x/(n-r):0);var h=Math.max(a||0,i||0);if(h)return this.center=this.unproject(new o(a?(n+r)/2:this.x,i?(e+t)/2:this.y)),this.zoom+=this.scaleZoom(h),this._unmodified=c,void(this._constraining=!1);if(this.latRange){var f=this.y,d=u.y/2;t>f-d&&(l=t+d),f+d>e&&(l=e-d)}if(this.lngRange){var p=this.x,v=u.x/2;r>p-v&&(s=r+v),p+v>n&&(s=n-v)}void 0===s&&void 0===l||(this.center=this.unproject(new o(void 0!==s?s:this.x,void 0!==l?l:this.y))),this._unmodified=c,this._constraining=!1}},_calcProjMatrix:function(){var t=new Float64Array(16),e=Math.atan(.5/this.altitude),r=Math.sin(e)*this.altitude/Math.sin(Math.PI/2-this._pitch-e),n=Math.cos(Math.PI/2-this._pitch)*r+this.altitude;d.perspective(t,2*Math.atan(this.height/2/this.altitude),this.width/this.height,.1,n),d.translate(t,t,[0,0,-this.altitude]),d.scale(t,t,[1,-1,1/this.height]),d.rotateX(t,t,this._pitch),d.rotateZ(t,t,this.angle),d.translate(t,t,[-this.x,-this.y,0]),this.projMatrix=t}}},{"../data/bucket":247,"../source/tile_coord":281,"../util/interpolate":343,"../util/util":349,"./coordinate":255,"./lng_lat":256,"gl-matrix":363,"point-geometry":404}],259:[function(t,e,r){"use strict";var n={" 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o,a,s,l,u,c,h,f,d=[];for(o=0,a=t.length;a>o;o++)if(u=n[t[o]]){for(f=null,s=0,l=u[1].length;l>s;s+=2)-1===u[1][s]&&-1===u[1][s+1]?f=null:(c=e+u[1][s]*i,h=r-u[1][s+1]*i,f&&d.push(f.x,f.y,c,h),f={x:c,y:h});e+=u[0]*i}return d}},{}],260:[function(t,e,r){"use strict";var n=e.exports={};n.Map=t("./ui/map"),n.Control=t("./ui/control/control"),n.Navigation=t("./ui/control/navigation"),n.Geolocate=t("./ui/control/geolocate"),n.Attribution=t("./ui/control/attribution"),n.Popup=t("./ui/popup"),n.GeoJSONSource=t("./source/geojson_source"),n.VideoSource=t("./source/video_source"),n.ImageSource=t("./source/image_source"),n.Style=t("./style/style"),n.LngLat=t("./geo/lng_lat"),n.LngLatBounds=t("./geo/lng_lat_bounds"),n.Point=t("point-geometry"),n.Evented=t("./util/evented"),n.util=t("./util/util"),n.supported=t("./util/browser").supported;var i=t("./util/ajax");n.util.getJSON=i.getJSON,n.util.getArrayBuffer=i.getArrayBuffer;var o=t("./util/config");n.config=o,Object.defineProperty(n,"accessToken",{get:function(){return o.ACCESS_TOKEN},set:function(t){o.ACCESS_TOKEN=t}})},{"./geo/lng_lat":256,"./geo/lng_lat_bounds":257,"./source/geojson_source":274,"./source/image_source":276,"./source/video_source":284,"./style/style":290,"./ui/control/attribution":318,"./ui/control/control":319,"./ui/control/geolocate":320,"./ui/control/navigation":321,"./ui/map":331,"./ui/popup":332,"./util/ajax":334,"./util/browser":335,"./util/config":339,"./util/evented":341,"./util/util":349,"point-geometry":404}],261:[function(t,e,r){"use strict";function n(t,e,r){var n,i=t.gl,l=t.transform,u=a.premultiply(r.paint["background-color"]),c=r.paint["background-pattern"],h=r.paint["background-opacity"],f=c?t.spriteAtlas.getPosition(c.from,!0):null,d=c?t.spriteAtlas.getPosition(c.to,!0):null;if(t.setDepthSublayer(0),f&&d){if(t.isOpaquePass)return;n=t.useProgram("pattern"),i.uniform1i(n.u_image,0),i.uniform2fv(n.u_pattern_tl_a,f.tl),i.uniform2fv(n.u_pattern_br_a,f.br),i.uniform2fv(n.u_pattern_tl_b,d.tl),i.uniform2fv(n.u_pattern_br_b,d.br),i.uniform1f(n.u_opacity,h),i.uniform1f(n.u_mix,c.t),t.spriteAtlas.bind(i,!0),t.tileExtentPatternVAO.bind(i,n,t.tileExtentBuffer)}else{if(t.isOpaquePass!==(1===u[3]))return;n=t.useProgram("fill"),i.uniform4fv(n.u_color,u),i.uniform1f(n.u_opacity,h),t.tileExtentVAO.bind(i,n,t.tileExtentBuffer)}i.disable(i.STENCIL_TEST);for(var p=o.coveringTiles(l),v=0;v<p.length;v++){var m=p[v],g=512;if(f&&d){var y=[f.size[0]*c.fromScale,f.size[1]*c.fromScale],b=[d.size[0]*c.toScale,d.size[1]*c.toScale],x={coord:m,tileSize:g};i.uniform2fv(n.u_patternscale_a,[1/s(x,y[0],t.transform.tileZoom),1/s(x,y[1],t.transform.tileZoom)]),i.uniform2fv(n.u_patternscale_b,[1/s(x,b[0],t.transform.tileZoom),1/s(x,b[1],t.transform.tileZoom)]);var _=g*Math.pow(2,t.transform.tileZoom-m.z),w=_/y[0]%1*(m.x+m.w*Math.pow(2,m.z)),M=_/y[1]%1*m.y,k=_/b[0]%1*(m.x+m.w*Math.pow(2,m.z)),A=_/b[1]%1*m.y;i.uniform2fv(n.u_offset_a,[w,M]),i.uniform2fv(n.u_offset_b,[k,A])}i.uniformMatrix4fv(n.u_matrix,!1,t.transform.calculatePosMatrix(m)),i.drawArrays(i.TRIANGLE_STRIP,0,t.tileExtentBuffer.length)}i.stencilMask(0),i.stencilFunc(i.EQUAL,128,128)}var i=t("../source/tile_pyramid"),o=new i({tileSize:512}),a=t("../util/util"),s=t("../source/pixels_to_tile_units");e.exports=n},{"../source/pixels_to_tile_units":277,"../source/tile_pyramid":282,"../util/util":349}],262:[function(t,e,r){"use strict";function n(t,e,r,n){if(!t.isOpaquePass){var o=t.gl;t.setDepthSublayer(0),t.depthMask(!1),o.disable(o.STENCIL_TEST);for(var a=0;a<n.length;a++){var s=n[a],l=e.getTile(s),u=l.getBucket(r);if(u){var c=u.bufferGroups.circle;if(c){var h=t.useProgram("circle",u.getProgramMacros("circle",r));o.uniform2fv(h.u_extrude_scale,t.transform.pixelsToGLUnits),o.uniform1f(h.u_blur,r.paint["circle-blur"]),o.uniform1f(h.u_devicepixelratio,i.devicePixelRatio),o.uniform1f(h.u_opacity,r.paint["circle-opacity"]),o.uniformMatrix4fv(h.u_matrix,!1,t.translatePosMatrix(s.posMatrix,l,r.paint["circle-translate"],r.paint["circle-translate-anchor"])),u.setUniforms(o,"circle",h,r,{zoom:t.transform.zoom});for(var f=0;f<c.length;f++){var d=c[f];d.vaos[r.id].bind(o,h,d.layout.vertex,d.layout.element,d.paint[r.id]),o.drawElements(o.TRIANGLES,3*d.layout.element.length,o.UNSIGNED_SHORT,0)}}}}}}var i=t("../util/browser");e.exports=n},{"../util/browser":335}],263:[function(t,e,r){"use strict";function n(t,e,r,n){var i=t.gl;i.enable(i.STENCIL_TEST);for(var o=t.useProgram("collisionbox"),a=0;a<n.length;a++){var s=n[a],l=e.getTile(s),u=l.getBucket(r);if(u){var c=u.bufferGroups.collisionBox;if(c&&c.length){var h=c[0];0!==h.layout.vertex.length&&(i.uniformMatrix4fv(o.u_matrix,!1,s.posMatrix),t.enableTileClippingMask(s),t.lineWidth(1),i.uniform1f(o.u_scale,Math.pow(2,t.transform.zoom-l.coord.z)),i.uniform1f(o.u_zoom,10*t.transform.zoom),i.uniform1f(o.u_maxzoom,10*(l.coord.z+1)),h.vaos[r.id].bind(i,o,h.layout.vertex),i.drawArrays(i.LINES,0,h.layout.vertex.length))}}}}e.exports=n},{}],264:[function(t,e,r){"use strict";function n(t,e,r){if(!t.isOpaquePass&&t.options.debug)for(var n=0;n<r.length;n++)i(t,e,r[n])}function i(t,e,r){var n=t.gl;n.disable(n.STENCIL_TEST),t.lineWidth(1*a.devicePixelRatio);var i=r.posMatrix,h=t.useProgram("debug");n.uniformMatrix4fv(h.u_matrix,!1,i),n.uniform4f(h.u_color,1,0,0,1),t.debugVAO.bind(n,h,t.debugBuffer),n.drawArrays(n.LINE_STRIP,0,t.debugBuffer.length);for(var f=o(r.toString(),50,200,5),d=new t.PosArray,p=0;p<f.length;p+=2)d.emplaceBack(f[p],f[p+1]);var v=new u(d.serialize(),t.PosArray.serialize(),u.BufferType.VERTEX),m=new c;m.bind(n,h,v),n.uniform4f(h.u_color,1,1,1,1);for(var g=e.getTile(r).tileSize,y=l/(Math.pow(2,t.transform.zoom-r.z)*g),b=[[-1,-1],[-1,1],[1,-1],[1,1]],x=0;x<b.length;x++){var _=b[x];n.uniformMatrix4fv(h.u_matrix,!1,s.translate([],i,[y*_[0],y*_[1],0])),n.drawArrays(n.LINES,0,v.length)}n.uniform4f(h.u_color,0,0,0,1),n.uniformMatrix4fv(h.u_matrix,!1,i),n.drawArrays(n.LINES,0,v.length)}var o=t("../lib/debugtext"),a=t("../util/browser"),s=t("gl-matrix").mat4,l=t("../data/bucket").EXTENT,u=t("../data/buffer"),c=t("./vertex_array_object");e.exports=n},{"../data/bucket":247,"../data/buffer":252,"../lib/debugtext":259,"../util/browser":335,"./vertex_array_object":273,"gl-matrix":363}],265:[function(t,e,r){"use strict";function n(t,e,r,n){var a=t.gl;a.enable(a.STENCIL_TEST);var l=s.premultiply(r.paint["fill-color"]),u=r.paint["fill-pattern"],c=s.premultiply(r.paint["fill-outline-color"]),h=r.paint["fill-opacity"];if(u?!t.isOpaquePass:t.isOpaquePass===(1===l[3]&&1===h))for(var f=0;f<n.length;f++)i(t,e,r,n[f]);if(!t.isOpaquePass&&r.paint["fill-antialias"])if(c||!r.paint["fill-pattern"]){var d=t.useProgram("outline");t.lineWidth(2),t.depthMask(!1),c?t.setDepthSublayer(2):t.setDepthSublayer(0),a.uniform2f(d.u_world,a.drawingBufferWidth,a.drawingBufferHeight),a.uniform4fv(d.u_color,c?c:l),a.uniform1f(d.u_opacity,h);for(var p=0;p<n.length;p++)o(t,e,r,n[p])}else{var v=t.useProgram("outlinepattern");t.lineWidth(2),t.depthMask(!1),t.setDepthSublayer(0),a.uniform2f(v.u_world,a.drawingBufferWidth,a.drawingBufferHeight);for(var m=0;m<n.length;m++)o(t,e,r,n[m])}}function i(t,e,r,n){var i=e.getTile(n),o=i.getBucket(r);if(o){var l=o.bufferGroups.fill;if(l){var u=t.gl,c=s.premultiply(r.paint["fill-color"]),h=r.paint["fill-pattern"],f=r.paint["fill-opacity"],d=n.posMatrix,p=t.translatePosMatrix(d,i,r.paint["fill-translate"],r.paint["fill-translate-anchor"]);t.setDepthSublayer(1),u.stencilMask(7),u.clear(u.STENCIL_BUFFER_BIT),t.enableTileClippingMask(n),u.stencilOpSeparate(u.FRONT,u.KEEP,u.KEEP,u.INCR_WRAP),u.stencilOpSeparate(u.BACK,u.KEEP,u.KEEP,u.DECR_WRAP),u.colorMask(!1,!1,!1,!1),t.depthMask(!1);var v=t.useProgram("fill");u.uniformMatrix4fv(v.u_matrix,!1,p);for(var m=0;m<l.length;m++){var g=l[m];g.vaos[r.id].bind(u,v,g.layout.vertex,g.layout.element),u.drawElements(u.TRIANGLES,3*g.layout.element.length,u.UNSIGNED_SHORT,0)}u.colorMask(!0,!0,!0,!0),t.depthMask(!0),u.stencilOp(u.KEEP,u.KEEP,u.KEEP),u.stencilMask(0);var y;h?(y=t.useProgram("pattern"),a(h,f,i,n,t,y),u.activeTexture(u.TEXTURE0),t.spriteAtlas.bind(u,!0),t.tileExtentPatternVAO.bind(u,y,t.tileExtentBuffer)):(y=t.useProgram("fill"),u.uniform4fv(v.u_color,c),u.uniform1f(v.u_opacity,f),t.tileExtentVAO.bind(u,y,t.tileExtentBuffer)),u.uniformMatrix4fv(y.u_matrix,!1,d),u.stencilFunc(u.NOTEQUAL,0,7),u.drawArrays(u.TRIANGLE_STRIP,0,t.tileExtentBuffer.length),u.stencilMask(0)}}}function o(t,e,r,n){var i=e.getTile(n),o=i.getBucket(r);if(o){var s=t.gl,l=o.bufferGroups.fill,u=r.paint["fill-pattern"],c=r.paint["fill-opacity"],h=u?t.useProgram("outlinepattern"):t.useProgram("outline");s.uniformMatrix4fv(h.u_matrix,!1,t.translatePosMatrix(n.posMatrix,i,r.paint["fill-translate"],r.paint["fill-translate-anchor"])),u&&a(u,c,i,n,t,h),t.enableTileClippingMask(n);for(var f=0;f<l.length;f++){var d=l[f];d.secondVaos[r.id].bind(s,h,d.layout.vertex,d.layout.element2),s.drawElements(s.LINES,2*d.layout.element2.length,s.UNSIGNED_SHORT,0)}}}function a(t,e,r,n,i,o){var a=i.gl,s=i.spriteAtlas.getPosition(t.from,!0),u=i.spriteAtlas.getPosition(t.to,!0);if(s&&u){a.uniform1i(o.u_image,0),a.uniform2fv(o.u_pattern_tl_a,s.tl),a.uniform2fv(o.u_pattern_br_a,s.br),a.uniform2fv(o.u_pattern_tl_b,u.tl),a.uniform2fv(o.u_pattern_br_b,u.br),a.uniform1f(o.u_opacity,e),a.uniform1f(o.u_mix,t.t);var c=[s.size[0]*t.fromScale,s.size[1]*t.fromScale],h=[u.size[0]*t.toScale,u.size[1]*t.toScale];a.uniform2fv(o.u_patternscale_a,[1/l(r,c[0],i.transform.tileZoom),1/l(r,c[1],i.transform.tileZoom)]),a.uniform2fv(o.u_patternscale_b,[1/l(r,h[0],i.transform.tileZoom),1/l(r,h[1],i.transform.tileZoom)]);var f=r.tileSize*Math.pow(2,i.transform.tileZoom-r.coord.z),d=f/c[0]%1*(r.coord.x+n.w*Math.pow(2,r.coord.z)),p=f/c[1]%1*r.coord.y,v=f/h[0]%1*(r.coord.x+n.w*Math.pow(2,r.coord.z)),m=f/h[1]%1*r.coord.y;a.uniform2fv(o.u_offset_a,[d,p]),a.uniform2fv(o.u_offset_b,[v,m]),a.activeTexture(a.TEXTURE0),i.spriteAtlas.bind(a,!0)}}var s=t("../util/util"),l=t("../source/pixels_to_tile_units");e.exports=n},{
+-"../source/pixels_to_tile_units":277,"../util/util":349}],266:[function(t,e,r){"use strict";var n=t("../util/browser"),i=t("gl-matrix").mat2,o=t("../util/util"),a=t("../source/pixels_to_tile_units");e.exports=function(t,e,r,s){if(!t.isOpaquePass){t.setDepthSublayer(0),t.depthMask(!1);var l=t.gl;if(l.enable(l.STENCIL_TEST),!(r.paint["line-width"]<=0)){var u=1/n.devicePixelRatio,c=r.paint["line-blur"]+u,h=r.paint["line-width"]/2,f=-1,d=0,p=0;r.paint["line-gap-width"]>0&&(f=r.paint["line-gap-width"]/2+.5*u,h=r.paint["line-width"],d=f-u/2);var v=d+h+u/2+p,m=o.premultiply(r.paint["line-color"]),g=t.transform,y=i.create();i.scale(y,y,[1,Math.cos(g._pitch)]),i.rotate(y,y,t.transform.angle);var b,x,_,w,M,k=Math.sqrt(g.height*g.height/4*(1+g.altitude*g.altitude)),A=g.height/2*Math.tan(g._pitch),T=(k+A)/k-1,E=r.paint["line-dasharray"],S=r.paint["line-pattern"];if(E)b=t.useProgram("linesdfpattern"),l.uniform2fv(b.u_linewidth,[v,f]),l.uniform1f(b.u_blur,c),l.uniform4fv(b.u_color,m),l.uniform1f(b.u_opacity,r.paint["line-opacity"]),x=t.lineAtlas.getDash(E.from,"round"===r.layout["line-cap"]),_=t.lineAtlas.getDash(E.to,"round"===r.layout["line-cap"]),l.uniform1i(b.u_image,0),l.activeTexture(l.TEXTURE0),t.lineAtlas.bind(l),l.uniform1f(b.u_tex_y_a,x.y),l.uniform1f(b.u_tex_y_b,_.y),l.uniform1f(b.u_mix,E.t),l.uniform1f(b.u_extra,T),l.uniform1f(b.u_offset,-r.paint["line-offset"]),l.uniformMatrix2fv(b.u_antialiasingmatrix,!1,y);else if(S){if(w=t.spriteAtlas.getPosition(S.from,!0),M=t.spriteAtlas.getPosition(S.to,!0),!w||!M)return;b=t.useProgram("linepattern"),l.uniform1i(b.u_image,0),l.activeTexture(l.TEXTURE0),t.spriteAtlas.bind(l,!0),l.uniform2fv(b.u_linewidth,[v,f]),l.uniform1f(b.u_blur,c),l.uniform2fv(b.u_pattern_tl_a,w.tl),l.uniform2fv(b.u_pattern_br_a,w.br),l.uniform2fv(b.u_pattern_tl_b,M.tl),l.uniform2fv(b.u_pattern_br_b,M.br),l.uniform1f(b.u_fade,S.t),l.uniform1f(b.u_opacity,r.paint["line-opacity"]),l.uniform1f(b.u_extra,T),l.uniform1f(b.u_offset,-r.paint["line-offset"]),l.uniformMatrix2fv(b.u_antialiasingmatrix,!1,y)}else b=t.useProgram("line"),l.uniform2fv(b.u_linewidth,[v,f]),l.uniform1f(b.u_blur,c),l.uniform1f(b.u_extra,T),l.uniform1f(b.u_offset,-r.paint["line-offset"]),l.uniformMatrix2fv(b.u_antialiasingmatrix,!1,y),l.uniform4fv(b.u_color,m),l.uniform1f(b.u_opacity,r.paint["line-opacity"]);for(var L=0;L<s.length;L++){var z=s[L],I=e.getTile(z),P=I.getBucket(r);if(P){var C=P.bufferGroups.line;if(C){t.enableTileClippingMask(z);var R=t.translatePosMatrix(z.posMatrix,I,r.paint["line-translate"],r.paint["line-translate-anchor"]);l.uniformMatrix4fv(b.u_matrix,!1,R);var D=1/a(I,1,t.transform.zoom);if(E){var O=x.width*E.fromScale,F=_.width*E.toScale,j=[1/a(I,O,t.transform.tileZoom),-x.height/2],N=[1/a(I,F,t.transform.tileZoom),-_.height/2],B=t.lineAtlas.width/(256*Math.min(O,F)*n.devicePixelRatio)/2;l.uniform1f(b.u_ratio,D),l.uniform2fv(b.u_patternscale_a,j),l.uniform2fv(b.u_patternscale_b,N),l.uniform1f(b.u_sdfgamma,B)}else S?(l.uniform1f(b.u_ratio,D),l.uniform2fv(b.u_pattern_size_a,[a(I,w.size[0]*S.fromScale,t.transform.tileZoom),M.size[1]]),l.uniform2fv(b.u_pattern_size_b,[a(I,M.size[0]*S.toScale,t.transform.tileZoom),M.size[1]])):l.uniform1f(b.u_ratio,D);for(var U=0;U<C.length;U++){var V=C[U];V.vaos[r.id].bind(l,b,V.layout.vertex,V.layout.element),l.drawElements(l.TRIANGLES,3*V.layout.element.length,l.UNSIGNED_SHORT,0)}}}}}}}},{"../source/pixels_to_tile_units":277,"../util/browser":335,"../util/util":349,"gl-matrix":363}],267:[function(t,e,r){"use strict";function n(t,e,r,n){if(!t.isOpaquePass){var o=t.gl;o.enable(o.DEPTH_TEST),t.depthMask(!0),o.depthFunc(o.LESS);for(var a=n.length&&n[0].z,s=0;s<n.length;s++){var l=n[s];t.setDepthSublayer(l.z-a),i(t,e,r,l)}o.depthFunc(o.LEQUAL)}}function i(t,e,r,n){var i=t.gl;i.disable(i.STENCIL_TEST);var u=e.getTile(n),c=t.transform.calculatePosMatrix(n,e.maxzoom),h=t.useProgram("raster");i.uniformMatrix4fv(h.u_matrix,!1,c),i.uniform1f(h.u_brightness_low,r.paint["raster-brightness-min"]),i.uniform1f(h.u_brightness_high,r.paint["raster-brightness-max"]),i.uniform1f(h.u_saturation_factor,s(r.paint["raster-saturation"])),i.uniform1f(h.u_contrast_factor,a(r.paint["raster-contrast"])),i.uniform3fv(h.u_spin_weights,o(r.paint["raster-hue-rotate"]));var f,d,p=u.source&&u.source._pyramid.findLoadedParent(n,0,{}),v=l(u,p,r,t.transform);i.activeTexture(i.TEXTURE0),i.bindTexture(i.TEXTURE_2D,u.texture),p?(i.activeTexture(i.TEXTURE1),i.bindTexture(i.TEXTURE_2D,p.texture),f=Math.pow(2,p.coord.z-u.coord.z),d=[u.coord.x*f%1,u.coord.y*f%1]):v[1]=0,i.uniform2fv(h.u_tl_parent,d||[0,0]),i.uniform1f(h.u_scale_parent,f||1),i.uniform1f(h.u_buffer_scale,1),i.uniform1f(h.u_opacity0,v[0]),i.uniform1f(h.u_opacity1,v[1]),i.uniform1i(h.u_image0,0),i.uniform1i(h.u_image1,1);var m=u.boundsBuffer||t.rasterBoundsBuffer,g=u.boundsVAO||t.rasterBoundsVAO;g.bind(i,h,m),i.drawArrays(i.TRIANGLE_STRIP,0,m.length)}function o(t){t*=Math.PI/180;var e=Math.sin(t),r=Math.cos(t);return[(2*r+1)/3,(-Math.sqrt(3)*e-r+1)/3,(Math.sqrt(3)*e-r+1)/3]}function a(t){return t>0?1/(1-t):1+t}function s(t){return t>0?1-1/(1.001-t):-t}function l(t,e,r,n){var i=[1,0],o=r.paint["raster-fade-duration"];if(t.source&&o>0){var a=(new Date).getTime(),s=(a-t.timeAdded)/o,l=e?(a-e.timeAdded)/o:-1,c=t.source._pyramid.coveringZoomLevel(n),h=e?Math.abs(e.coord.z-c)>Math.abs(t.coord.z-c):!1;!e||h?(i[0]=u.clamp(s,0,1),i[1]=1-i[0]):(i[0]=u.clamp(1-l,0,1),i[1]=1-i[0])}var f=r.paint["raster-opacity"];return i[0]*=f,i[1]*=f,i}var u=t("../util/util"),c=t("../util/struct_array");e.exports=n,n.RasterBoundsArray=new c({members:[{name:"a_pos",type:"Int16",components:2},{name:"a_texture_pos",type:"Int16",components:2}]})},{"../util/struct_array":347,"../util/util":349}],268:[function(t,e,r){"use strict";function n(t,e,r,n){if(!t.isOpaquePass){var o=!(r.layout["text-allow-overlap"]||r.layout["icon-allow-overlap"]||r.layout["text-ignore-placement"]||r.layout["icon-ignore-placement"]),a=t.gl;o?a.disable(a.STENCIL_TEST):a.enable(a.STENCIL_TEST),t.setDepthSublayer(0),t.depthMask(!1),a.disable(a.DEPTH_TEST),i(t,e,r,n,!1,r.paint["icon-translate"],r.paint["icon-translate-anchor"],r.layout["icon-rotation-alignment"],r.layout["icon-size"],r.paint["icon-halo-width"],r.paint["icon-halo-color"],r.paint["icon-halo-blur"],r.paint["icon-opacity"],r.paint["icon-color"]),i(t,e,r,n,!0,r.paint["text-translate"],r.paint["text-translate-anchor"],r.layout["text-rotation-alignment"],r.layout["text-size"],r.paint["text-halo-width"],r.paint["text-halo-color"],r.paint["text-halo-blur"],r.paint["text-opacity"],r.paint["text-color"]),a.enable(a.DEPTH_TEST),s(t,e,r,n)}}function i(t,e,r,n,i,a,s,u,c,h,f,d,p,v){f=l.premultiply(f),v=l.premultiply(v);for(var m=0;m<n.length;m++){var g=e.getTile(n[m]),y=g.getBucket(r);if(y){var b=y.bufferGroups,x=i?b.glyph:b.icon;x.length&&(t.enableTileClippingMask(n[m]),o(t,r,n[m].posMatrix,g,y,x,i,i||y.sdfIcons,!i&&y.iconsNeedLinear,i?y.adjustedTextSize:y.adjustedIconSize,y.fontstack,a,s,u,c,h,f,d,p,v))}}}function o(t,e,r,n,i,o,s,l,c,h,f,d,p,v,m,g,y,b,x,_){var w,M,k,A=t.gl,T=t.transform,E="map"===v,S=s?24:1,L=m/S;E?(M=u(n,1,t.transform.zoom)*L,k=1/Math.cos(T._pitch),w=[M,M]):(M=t.transform.altitude*L,k=1,w=[T.pixelsToGLUnits[0]*M,T.pixelsToGLUnits[1]*M]);var z=Math.sqrt(T.height*T.height/4*(1+T.altitude*T.altitude)),I=T.height/2*Math.tan(T._pitch),P=(z+I)/z-1;if(s||t.style.sprite.loaded()){var C=t.useProgram(l?"sdf":"icon");if(A.uniformMatrix4fv(C.u_matrix,!1,t.translatePosMatrix(r,n,d,p)),A.uniform1i(C.u_skewed,E),A.uniform1f(C.u_extra,P),A.uniform2fv(C.u_extrude_scale,w),A.activeTexture(A.TEXTURE0),A.uniform1i(C.u_texture,0),s){var R=f&&t.glyphSource.getGlyphAtlas(f);if(!R)return;R.updateTexture(A),A.uniform2f(C.u_texsize,R.width/4,R.height/4)}else{var D=t.options.rotating||t.options.zooming,O=1!==L||a.devicePixelRatio!==t.spriteAtlas.pixelRatio||c,F=E||t.transform.pitch;t.spriteAtlas.bind(A,l||D||O||F),A.uniform2f(C.u_texsize,t.spriteAtlas.width/4,t.spriteAtlas.height/4)}var j=Math.log(m/h)/Math.LN2||0;A.uniform1f(C.u_zoom,10*(t.transform.zoom-j)),A.activeTexture(A.TEXTURE1),t.frameHistory.bind(A),A.uniform1i(C.u_fadetexture,1);var N;if(l){var B=8,U=1.19,V=6,q=.105*S/m/a.devicePixelRatio;if(g){A.uniform1f(C.u_gamma,(b*U/L/B+q)*k),A.uniform4fv(C.u_color,y),A.uniform1f(C.u_opacity,x),A.uniform1f(C.u_buffer,(V-g/L)/B);for(var G=0;G<o.length;G++)N=o[G],N.vaos[e.id].bind(A,C,N.layout.vertex,N.layout.element),A.drawElements(A.TRIANGLES,3*N.layout.element.length,A.UNSIGNED_SHORT,0)}A.uniform1f(C.u_gamma,q*k),A.uniform4fv(C.u_color,_),A.uniform1f(C.u_opacity,x),A.uniform1f(C.u_buffer,.75);for(var H=0;H<o.length;H++)N=o[H],N.vaos[e.id].bind(A,C,N.layout.vertex,N.layout.element),A.drawElements(A.TRIANGLES,3*N.layout.element.length,A.UNSIGNED_SHORT,0)}else{A.uniform1f(C.u_opacity,x);for(var X=0;X<o.length;X++)N=o[X],N.vaos[e.id].bind(A,C,N.layout.vertex,N.layout.element),A.drawElements(A.TRIANGLES,3*N.layout.element.length,A.UNSIGNED_SHORT,0)}}}var a=t("../util/browser"),s=t("./draw_collision_debug"),l=t("../util/util"),u=t("../source/pixels_to_tile_units");e.exports=n},{"../source/pixels_to_tile_units":277,"../util/browser":335,"../util/util":349,"./draw_collision_debug":263}],269:[function(t,e,r){"use strict";function n(){this.changeTimes=new Float64Array(256),this.changeOpacities=new Uint8Array(256),this.opacities=new Uint8ClampedArray(256),this.array=new Uint8Array(this.opacities.buffer),this.fadeDuration=300,this.previousZoom=0,this.firstFrame=!0}e.exports=n,n.prototype.record=function(t){var e=Date.now();this.firstFrame&&(e=0,this.firstFrame=!1),t=Math.floor(10*t);var r;if(t<this.previousZoom)for(r=t+1;r<=this.previousZoom;r++)this.changeTimes[r]=e,this.changeOpacities[r]=this.opacities[r];else for(r=t;r>this.previousZoom;r--)this.changeTimes[r]=e,this.changeOpacities[r]=this.opacities[r];for(r=0;256>r;r++){var n=e-this.changeTimes[r],i=n/this.fadeDuration*255;t>=r?this.opacities[r]=this.changeOpacities[r]+i:this.opacities[r]=this.changeOpacities[r]-i}this.changed=!0,this.previousZoom=t},n.prototype.bind=function(t){this.texture?(t.bindTexture(t.TEXTURE_2D,this.texture),this.changed&&(t.texSubImage2D(t.TEXTURE_2D,0,0,0,256,1,t.ALPHA,t.UNSIGNED_BYTE,this.array),this.changed=!1)):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.NEAREST),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.NEAREST),t.texImage2D(t.TEXTURE_2D,0,t.ALPHA,256,1,0,t.ALPHA,t.UNSIGNED_BYTE,this.array))}},{}],270:[function(t,e,r){"use strict";function n(t,e){this.width=t,this.height=e,this.nextRow=0,this.bytes=4,this.data=new Uint8Array(this.width*this.height*this.bytes),this.positions={}}e.exports=n,n.prototype.setSprite=function(t){this.sprite=t},n.prototype.getDash=function(t,e){var r=t.join(",")+e;return this.positions[r]||(this.positions[r]=this.addDash(t,e)),this.positions[r]},n.prototype.addDash=function(t,e){var r=e?7:0,n=2*r+1,i=128;if(this.nextRow+n>this.height)return console.warn("LineAtlas out of space"),null;for(var o=0,a=0;a<t.length;a++)o+=t[a];for(var s=this.width/o,l=s/2,u=t.length%2===1,c=-r;r>=c;c++)for(var h=this.nextRow+r+c,f=this.width*h,d=u?-t[t.length-1]:0,p=t[0],v=1,m=0;m<this.width;m++){for(;m/s>p;)d=p,p+=t[v],u&&v===t.length-1&&(p+=t[0]),v++;var g,y=Math.abs(m-d*s),b=Math.abs(m-p*s),x=Math.min(y,b),_=v%2===1;if(e){var w=r?c/r*(l+1):0;if(_){var M=l-Math.abs(w);g=Math.sqrt(x*x+M*M)}else g=l-Math.sqrt(x*x+w*w)}else g=(_?1:-1)*x;this.data[3+4*(f+m)]=Math.max(0,Math.min(255,g+i))}var k={y:(this.nextRow+r+.5)/this.height,height:2*r/this.height,width:o};return this.nextRow+=n,this.dirty=!0,k},n.prototype.bind=function(t){this.texture?(t.bindTexture(t.TEXTURE_2D,this.texture),this.dirty&&(this.dirty=!1,t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width,this.height,t.RGBA,t.UNSIGNED_BYTE,this.data))):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.REPEAT),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.REPEAT),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texImage2D(t.TEXTURE_2D,0,t.RGBA,this.width,this.height,0,t.RGBA,t.UNSIGNED_BYTE,this.data))}},{}],271:[function(t,e,r){"use strict";function n(t,e){this.gl=t,this.transform=e,this.reusableTextures={},this.preFbos={},this.frameHistory=new a,this.setup(),this.numSublayers=s.maxUnderzooming+s.maxOverzooming+1,this.depthEpsilon=1/Math.pow(2,16),this.lineWidthRange=t.getParameter(t.ALIASED_LINE_WIDTH_RANGE)}var i=t("../util/browser"),o=t("gl-matrix").mat4,a=t("./frame_history"),s=t("../source/tile_pyramid"),l=t("../data/bucket").EXTENT,u=t("../source/pixels_to_tile_units"),c=t("../util/util"),h=t("../util/struct_array"),f=t("../data/buffer"),d=t("./vertex_array_object"),p=t("./draw_raster").RasterBoundsArray;e.exports=n,c.extend(n.prototype,t("./painter/use_program")),n.prototype.resize=function(t,e){var r=this.gl;this.width=t*i.devicePixelRatio,this.height=e*i.devicePixelRatio,r.viewport(0,0,this.width,this.height)},n.prototype.setup=function(){var t=this.gl;t.verbose=!0,t.enable(t.BLEND),t.blendFunc(t.ONE,t.ONE_MINUS_SRC_ALPHA),t.enable(t.STENCIL_TEST),t.enable(t.DEPTH_TEST),t.depthFunc(t.LEQUAL),this._depthMask=!1,t.depthMask(!1);var e=this.PosArray=new h({members:[{name:"a_pos",type:"Int16",components:2}]}),r=new e;r.emplaceBack(0,0),r.emplaceBack(l,0),r.emplaceBack(0,l),r.emplaceBack(l,l),this.tileExtentBuffer=new f(r.serialize(),e.serialize(),f.BufferType.VERTEX),this.tileExtentVAO=new d,this.tileExtentPatternVAO=new d;var n=new e;n.emplaceBack(0,0),n.emplaceBack(l,0),n.emplaceBack(l,l),n.emplaceBack(0,l),n.emplaceBack(0,0),this.debugBuffer=new f(n.serialize(),e.serialize(),f.BufferType.VERTEX),this.debugVAO=new d;var i=new p;i.emplaceBack(0,0,0,0),i.emplaceBack(l,0,32767,0),i.emplaceBack(0,l,0,32767),i.emplaceBack(l,l,32767,32767),this.rasterBoundsBuffer=new f(i.serialize(),p.serialize(),f.BufferType.VERTEX),this.rasterBoundsVAO=new d},n.prototype.clearColor=function(){var t=this.gl;t.clearColor(0,0,0,0),t.clear(t.COLOR_BUFFER_BIT)},n.prototype.clearStencil=function(){var t=this.gl;t.clearStencil(0),t.stencilMask(255),t.clear(t.STENCIL_BUFFER_BIT)},n.prototype.clearDepth=function(){var t=this.gl;t.clearDepth(1),this.depthMask(!0),t.clear(t.DEPTH_BUFFER_BIT)},n.prototype._renderTileClippingMasks=function(t){var e=this.gl;e.colorMask(!1,!1,!1,!1),this.depthMask(!1),e.disable(e.DEPTH_TEST),e.enable(e.STENCIL_TEST),e.stencilMask(248),e.stencilOp(e.KEEP,e.KEEP,e.REPLACE);var r=1;this._tileClippingMaskIDs={};for(var n=0;n<t.length;n++){var i=t[n],o=this._tileClippingMaskIDs[i.id]=r++<<3;e.stencilFunc(e.ALWAYS,o,248);var a=this.useProgram("fill");e.uniformMatrix4fv(a.u_matrix,!1,i.posMatrix),this.tileExtentVAO.bind(e,a,this.tileExtentBuffer),e.drawArrays(e.TRIANGLE_STRIP,0,this.tileExtentBuffer.length)}e.stencilMask(0),e.colorMask(!0,!0,!0,!0),this.depthMask(!0),e.enable(e.DEPTH_TEST)},n.prototype.enableTileClippingMask=function(t){var e=this.gl;e.stencilFunc(e.EQUAL,this._tileClippingMaskIDs[t.id],248)},n.prototype.prepareBuffers=function(){},n.prototype.bindDefaultFramebuffer=function(){var t=this.gl;t.bindFramebuffer(t.FRAMEBUFFER,null)};var v={symbol:t("./draw_symbol"),circle:t("./draw_circle"),line:t("./draw_line"),fill:t("./draw_fill"),raster:t("./draw_raster"),background:t("./draw_background"),debug:t("./draw_debug")};n.prototype.render=function(t,e){this.style=t,this.options=e,this.lineAtlas=t.lineAtlas,this.spriteAtlas=t.spriteAtlas,this.spriteAtlas.setSprite(t.sprite),this.glyphSource=t.glyphSource,this.frameHistory.record(this.transform.zoom),this.prepareBuffers(),this.clearColor(),this.clearDepth(),this.showOverdrawInspector(e.showOverdrawInspector),this.depthRange=(t._order.length+2)*this.numSublayers*this.depthEpsilon,this.renderPass({isOpaquePass:!0}),this.renderPass({isOpaquePass:!1})},n.prototype.renderPass=function(t){var e=this.style._groups,r=t.isOpaquePass;this.currentLayer=r?this.style._order.length:-1;for(var n=0;n<e.length;n++){var i,o=e[r?e.length-1-n:n],a=this.style.sources[o.source],s=[];if(a){for(s=a.getVisibleCoordinates(),i=0;i<s.length;i++)s[i].posMatrix=this.transform.calculatePosMatrix(s[i],a.maxzoom);this.clearStencil(),a.prepare&&a.prepare(),a.isTileClipped&&this._renderTileClippingMasks(s)}for(r?(this._showOverdrawInspector||this.gl.disable(this.gl.BLEND),this.isOpaquePass=!0):(this.gl.enable(this.gl.BLEND),this.isOpaquePass=!1,s.reverse()),i=0;i<o.length;i++){var l=o[r?o.length-1-i:i];this.currentLayer+=r?-1:1,this.renderLayer(this,a,l,s)}a&&v.debug(this,a,s)}},n.prototype.depthMask=function(t){t!==this._depthMask&&(this._depthMask=t,this.gl.depthMask(t))},n.prototype.renderLayer=function(t,e,r,n){r.isHidden(this.transform.zoom)||("background"===r.type||n.length)&&(this.id=r.id,v[r.type](t,e,r,n))},n.prototype.setDepthSublayer=function(t){var e=1-((1+this.currentLayer)*this.numSublayers+t)*this.depthEpsilon,r=e-1+this.depthRange;this.gl.depthRange(r,e)},n.prototype.translatePosMatrix=function(t,e,r,n){if(!r[0]&&!r[1])return t;if("viewport"===n){var i=Math.sin(-this.transform.angle),a=Math.cos(-this.transform.angle);r=[r[0]*a-r[1]*i,r[0]*i+r[1]*a]}var s=[u(e,r[0],this.transform.zoom),u(e,r[1],this.transform.zoom),0],l=new Float32Array(16);return o.translate(l,t,s),l},n.prototype.saveTexture=function(t){var e=this.reusableTextures[t.size];e?e.push(t):this.reusableTextures[t.size]=[t]},n.prototype.getTexture=function(t){var e=this.reusableTextures[t];return e&&e.length>0?e.pop():null},n.prototype.lineWidth=function(t){this.gl.lineWidth(c.clamp(t,this.lineWidthRange[0],this.lineWidthRange[1]))},n.prototype.showOverdrawInspector=function(t){if(t||this._showOverdrawInspector){this._showOverdrawInspector=t;var e=this.gl;if(t){e.blendFunc(e.CONSTANT_COLOR,e.ONE);var r=8,n=1/r;e.blendColor(n,n,n,0),e.clearColor(0,0,0,1),e.clear(e.COLOR_BUFFER_BIT)}else e.blendFunc(e.ONE,e.ONE_MINUS_SRC_ALPHA)}}},{"../data/bucket":247,"../data/buffer":252,"../source/pixels_to_tile_units":277,"../source/tile_pyramid":282,"../util/browser":335,"../util/struct_array":347,"../util/util":349,"./draw_background":261,"./draw_circle":262,"./draw_debug":264,"./draw_fill":265,"./draw_line":266,"./draw_raster":267,"./draw_symbol":268,"./frame_history":269,"./painter/use_program":272,"./vertex_array_object":273,"gl-matrix":363}],272:[function(t,e,r){"use strict";var n=(t("path"),t("assert")),i=t("../../util/util"),o={debug:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\n\nvoid main() {\n    gl_FragColor = u_color;\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1);\n}\n"},fill:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvoid main() {\n    gl_FragColor = u_color * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n"},circle:{fragmentSource:"precision mediump float;\n\nuniform lowp float u_blur;\nuniform lowp float u_opacity;\n\nvarying lowp vec4 v_color;\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main() {\n    float t = smoothstep(1.0 - max(u_blur, v_antialiasblur), 1.0, length(v_extrude));\n    gl_FragColor = v_color * (1.0 - t) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_extrude_scale;\nuniform float u_devicepixelratio;\n\nattribute vec2 a_pos;\n\n#ifdef ATTRIBUTE_A_COLOR\nattribute lowp vec4 a_color;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\nuniform lowp float u_color_t;\nattribute lowp vec4 a_color0;\nattribute lowp vec4 a_color1;\nattribute lowp vec4 a_color2;\nattribute lowp vec4 a_color3;\n#else\nuniform lowp vec4 a_color;\n#endif\n\n#ifdef ATTRIBUTE_A_RADIUS\nattribute mediump float a_radius;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\nuniform lowp float u_radius_t;\nattribute mediump vec4 a_radius;\n#else\nuniform mediump float a_radius;\n#endif\n\nvarying vec2 v_extrude;\nvarying lowp vec4 v_color;\nvarying lowp float v_antialiasblur;\n\nfloat evaluate_zoom_function_1(const vec4 values, const float t) {\n    if (t < 1.0) {\n        return mix(values[0], values[1], t);\n    } else if (t < 2.0) {\n        return mix(values[1], values[2], t - 1.0);\n    } else {\n        return mix(values[2], values[3], t - 2.0);\n    }\n}\n\nvec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) {\n    if (t < 1.0) {\n        return mix(value0, value1, t);\n    } else if (t < 2.0) {\n        return mix(value1, value2, t - 1.0);\n    } else {\n        return mix(value2, value3, t - 2.0);\n    }\n}\n\nvoid main(void) {\n\n#ifdef ATTRIBUTE_A_RADIUS\n    mediump float radius = a_radius / 10.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\n    mediump float radius = evaluate_zoom_function_1(a_radius, u_radius_t) / 10.0;\n#else\n    mediump float radius = a_radius;\n#endif\n\n    // unencode the extrusion vector that we snuck into the a_pos vector\n    v_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);\n\n    vec2 extrude = v_extrude * radius * u_extrude_scale;\n    // multiply a_pos by 0.5, since we had it * 2 in order to sneak\n    // in extrusion data\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1);\n\n    // gl_Position is divided by gl_Position.w after this shader runs.\n    // Multiply the extrude by it so that it isn't affected by it.\n    gl_Position.xy += extrude * gl_Position.w;\n\n#ifdef ATTRIBUTE_A_COLOR\n    v_color = a_color / 255.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\n    v_color = evaluate_zoom_function_4(a_color0, a_color1, a_color2, a_color3, u_color_t) / 255.0;\n#else\n    v_color = a_color;\n#endif\n\n    // This is a minimum blur distance that serves as a faux-antialiasing for\n    // the circle. since blur is a ratio of the circle's size and the intent is\n    // to keep the blur at roughly 1px, the two are inversely related.\n    v_antialiasblur = 1.0 / u_devicepixelratio / radius;\n}\n"},line:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"},linepattern:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform float u_point;\nuniform float u_blur;\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_fade;\nuniform float u_opacity;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0);\n    float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0);\n    float y_a = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_a.y);\n    float y_b = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_b.y);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, vec2(x_a, y_a));\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, vec2(x_b, y_b));\n\n    vec4 color = mix(texture2D(u_image, pos), texture2D(u_image, pos2), u_fade);\n\n    alpha *= u_opacity;\n\n    gl_FragColor = color * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 extrude = a_extrude * scale;\n    mediump vec2 dist = u_linewidth.s * extrude;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n    v_linesofar = a_linesofar;\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"},linesdfpattern:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\nuniform sampler2D u_image;\nuniform float u_sdfgamma;\nuniform float u_mix;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float sdfdist_a = texture2D(u_image, v_tex_a).a;\n    float sdfdist_b = texture2D(u_image, v_tex_b).a;\n    float sdfdist = mix(sdfdist_a, sdfdist_b, u_mix);\n    alpha *= smoothstep(0.5 - u_sdfgamma, 0.5 + u_sdfgamma, sdfdist);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump vec2 u_linewidth;\nuniform mediump float u_ratio;\nuniform vec2 u_patternscale_a;\nuniform float u_tex_y_a;\nuniform vec2 u_patternscale_b;\nuniform float u_tex_y_b;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    v_tex_a = vec2(a_linesofar * u_patternscale_a.x, normal.y * u_patternscale_a.y + u_tex_y_a);\n    v_tex_b = vec2(a_linesofar * u_patternscale_b.x, normal.y * u_patternscale_b.y + u_tex_y_b);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
+-},outline:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"},outlinepattern:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    // find distance to outline for alpha interpolation\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    \n\n    gl_FragColor = mix(color1, color2, u_mix) * alpha * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"},pattern:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    gl_FragColor = mix(color1, color2, u_mix) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n}\n"},raster:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity0;\nuniform float u_opacity1;\nuniform sampler2D u_image0;\nuniform sampler2D u_image1;\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nuniform float u_brightness_low;\nuniform float u_brightness_high;\n\nuniform float u_saturation_factor;\nuniform float u_contrast_factor;\nuniform vec3 u_spin_weights;\n\nvoid main() {\n\n    // read and cross-fade colors from the main and parent tiles\n    vec4 color0 = texture2D(u_image0, v_pos0);\n    vec4 color1 = texture2D(u_image1, v_pos1);\n    vec4 color = color0 * u_opacity0 + color1 * u_opacity1;\n    vec3 rgb = color.rgb;\n\n    // spin\n    rgb = vec3(\n        dot(rgb, u_spin_weights.xyz),\n        dot(rgb, u_spin_weights.zxy),\n        dot(rgb, u_spin_weights.yzx));\n\n    // saturation\n    float average = (color.r + color.g + color.b) / 3.0;\n    rgb += (average - rgb) * u_saturation_factor;\n\n    // contrast\n    rgb = (rgb - 0.5) * u_contrast_factor + 0.5;\n\n    // brightness\n    vec3 u_high_vec = vec3(u_brightness_low, u_brightness_low, u_brightness_low);\n    vec3 u_low_vec = vec3(u_brightness_high, u_brightness_high, u_brightness_high);\n\n    gl_FragColor = vec4(mix(u_high_vec, u_low_vec, rgb), color.a);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_tl_parent;\nuniform float u_scale_parent;\nuniform float u_buffer_scale;\n\nattribute vec2 a_pos;\nattribute vec2 a_texture_pos;\n\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5;\n    v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent;\n}\n"},icon:{fragmentSource:"precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp float u_opacity;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * u_opacity;\n    gl_FragColor = texture2D(u_texture, v_tex) * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"},sdf:{fragmentSource:"precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform lowp float u_buffer;\nuniform lowp float u_gamma;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    lowp float dist = texture2D(u_texture, v_tex).a;\n    lowp float fade_alpha = texture2D(u_fadetexture, v_fade_tex).a;\n    lowp float gamma = u_gamma * v_gamma_scale;\n    lowp float alpha = smoothstep(u_buffer - gamma, u_buffer + gamma, dist) * fade_alpha;\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - y * u_extra);\n    v_gamma_scale = perspective_scale;\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"},collisionbox:{fragmentSource:"precision mediump float;\n\nuniform float u_zoom;\nuniform float u_maxzoom;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n\n    float alpha = 0.5;\n\n    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha;\n\n    if (v_placement_zoom > u_zoom) {\n        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha;\n    }\n\n    if (u_zoom >= v_max_zoom) {\n        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25;\n    }\n\n    if (v_placement_zoom >= u_maxzoom) {\n        gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2;\n    }\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_extrude;\nattribute vec2 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_scale;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n     gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0);\n\n     v_max_zoom = a_data.x;\n     v_placement_zoom = a_data.y;\n}\n"}};e.exports._createProgram=function(t,e){var r=this.gl,a=r.createProgram(),s=o[t],l="";if(e)for(var u=0;u<e.length;u++)l+="#define "+e[u]+"\n";var c=r.createShader(r.FRAGMENT_SHADER);r.shaderSource(c,l+s.fragmentSource),r.compileShader(c),n(r.getShaderParameter(c,r.COMPILE_STATUS),r.getShaderInfoLog(c)),r.attachShader(a,c);var h=r.createShader(r.VERTEX_SHADER);r.shaderSource(h,l+s.vertexSource),r.compileShader(h),n(r.getShaderParameter(h,r.COMPILE_STATUS),r.getShaderInfoLog(h)),r.attachShader(a,h),r.linkProgram(a),n(r.getProgramParameter(a,r.LINK_STATUS),r.getProgramInfoLog(a));for(var f={},d=r.getProgramParameter(a,r.ACTIVE_ATTRIBUTES),p=0;d>p;p++){var v=r.getActiveAttrib(a,p);f[v.name]=p}for(var m={},g=r.getProgramParameter(a,r.ACTIVE_UNIFORMS),y=0;g>y;y++){var b=r.getActiveUniform(a,y);m[b.name]=r.getUniformLocation(a,b.name)}return i.extend({program:a,definition:s,attributes:f,numAttributes:d},f,m)},e.exports._createProgramCached=function(t,e){this.cache=this.cache||{},this._showOverdrawInspector&&(e=e||[],e.push("OVERDRAW_INSPECTOR"));var r=JSON.stringify({name:t,macros:e});return this.cache[r]||(this.cache[r]=this._createProgram(t,e)),this.cache[r]},e.exports.useProgram=function(t,e){var r=this.gl,n=this._createProgramCached(t,e),i=this.currentProgram;return i!==n&&(r.useProgram(n.program),this.currentProgram=n),n}},{"../../util/util":349,assert:52,path:59}],273:[function(t,e,r){"use strict";function n(){this.boundProgram=null,this.boundVertexBuffer=null,this.boundVertexBuffer2=null,this.boundElementBuffer=null,this.vao=null}var i=t("assert");e.exports=n;var o=!1;n.prototype.bind=function(t,e,r,n,a){var s=t.extVertexArrayObject;if(void 0===s&&(s=t.extVertexArrayObject=t.getExtension("OES_vertex_array_object")),s?(this.vao||(this.vao=s.createVertexArrayOES()),s.bindVertexArrayOES(this.vao)):o||(console.warn("Not using VertexArrayObject extension."),o=!0),this.boundProgram)i(this.boundProgram===e,"trying to bind a VAO to a different shader"),i(this.boundVertexBuffer===r,"trying to bind a VAO to a different vertex buffer"),i(this.boundVertexBuffer2===a,"trying to bind a VAO to a different vertex buffer"),i(this.boundElementBuffer===n,"trying to bind a VAO to a different element buffer");else{var l,u=s?0:t.currentNumAttributes||0,c=e.numAttributes;for(l=u;c>l;l++)t.enableVertexAttribArray(l);if(!s){for(i(l>0),l=c;u>l;l++)t.disableVertexAttribArray(l);t.currentNumAttributes=c}r.bind(t),r.setVertexAttribPointers(t,e),a&&(a.bind(t),a.setVertexAttribPointers(t,e)),n&&n.bind(t),s&&(this.boundProgram=e,this.boundVertexBuffer=r,this.boundVertexBuffer2=a,this.boundElementBuffer=n)}},n.prototype.unbind=function(t){var e=t.extVertexArrayObject;e&&e.bindVertexArrayOES(null)},n.prototype.destroy=function(t){var e=t.extVertexArrayObject;e&&this.vao&&(e.deleteVertexArrayOES(this.vao),this.vao=null)}},{assert:52}],274:[function(t,e,r){"use strict";function n(t){t=t||{},this._data=t.data,void 0!==t.maxzoom&&(this.maxzoom=t.maxzoom);var e=u/this.tileSize;this.geojsonVtOptions={buffer:(void 0!==t.buffer?t.buffer:128)*e,tolerance:(void 0!==t.tolerance?t.tolerance:.375)*e,extent:u,maxZoom:this.maxzoom},this.cluster=t.cluster||!1,this.superclusterOptions={maxZoom:Math.min(t.clusterMaxZoom,this.maxzoom-1)||this.maxzoom-1,extent:u,radius:(t.clusterRadius||50)*e,log:!1},this._pyramid=new a({tileSize:this.tileSize,minzoom:this.minzoom,maxzoom:this.maxzoom,reparseOverscaled:!0,load:this._loadTile.bind(this),abort:this._abortTile.bind(this),unload:this._unloadTile.bind(this),add:this._addTile.bind(this),remove:this._removeTile.bind(this),redoPlacement:this._redoTilePlacement.bind(this)})}var i=t("../util/util"),o=t("../util/evented"),a=t("./tile_pyramid"),s=t("./source"),l=t("resolve-url"),u=t("../data/bucket").EXTENT;e.exports=n,n.prototype=i.inherit(o,{minzoom:0,maxzoom:18,tileSize:512,_dirty:!0,isTileClipped:!0,setData:function(t){return this._data=t,this._dirty=!0,this.fire("change"),this.map&&this.update(this.map.transform),this},onAdd:function(t){this.map=t},loaded:function(){return this._loaded&&this._pyramid.loaded()},update:function(t){this._dirty&&this._updateData(),this._loaded&&this._pyramid.update(this.used,t)},reload:function(){this._loaded&&this._pyramid.reload()},serialize:function(){return{type:"geojson",data:this._data}},getVisibleCoordinates:s._getVisibleCoordinates,getTile:s._getTile,queryRenderedFeatures:s._queryRenderedVectorFeatures,querySourceFeatures:s._querySourceFeatures,_updateData:function(){this._dirty=!1;var t={tileSize:this.tileSize,source:this.id,geojsonVtOptions:this.geojsonVtOptions,cluster:this.cluster,superclusterOptions:this.superclusterOptions},e=this._data;"string"==typeof e?t.url="undefined"!=typeof window?l(window.location.href,e):e:t.data=JSON.stringify(e),this.workerID=this.dispatcher.send("parse geojson",t,function(t){this._loaded=!0,t?this.fire("error",{error:t}):(this._pyramid.reload(),this.fire("change"))}.bind(this))},_loadTile:function(t){var e=t.coord.z>this.maxzoom?Math.pow(2,t.coord.z-this.maxzoom):1,r={uid:t.uid,coord:t.coord,zoom:t.coord.z,maxZoom:this.maxzoom,tileSize:this.tileSize,source:this.id,overscaling:e,angle:this.map.transform.angle,pitch:this.map.transform.pitch,showCollisionBoxes:this.map.showCollisionBoxes};t.workerID=this.dispatcher.send("load geojson tile",r,function(e,r){if(t.unloadVectorData(this.map.painter),!t.aborted){if(e)return void this.fire("tile.error",{tile:t});t.loadVectorData(r,this.map.style),t.redoWhenDone&&(t.redoWhenDone=!1,t.redoPlacement(this)),this.fire("tile.load",{tile:t})}}.bind(this),this.workerID)},_abortTile:function(t){t.aborted=!0},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.unloadVectorData(this.map.painter),this.dispatcher.send("remove tile",{uid:t.uid,source:this.id},null,t.workerID)},redoPlacement:s.redoPlacement,_redoTilePlacement:function(t){t.redoPlacement(this)}})},{"../data/bucket":247,"../util/evented":341,"../util/util":349,"./source":279,"./tile_pyramid":282,"resolve-url":405}],275:[function(t,e,r){"use strict";function n(t){this.features=t,this.length=t.length,this.extent=s}function i(t){this.type=t.type,this.rawGeometry=1===t.type?[t.geometry]:t.geometry,this.properties=t.tags,this.extent=s}var o=t("point-geometry"),a=t("vector-tile").VectorTileFeature,s=t("../data/bucket").EXTENT;e.exports=n,n.prototype.feature=function(t){return new i(this.features[t])},i.prototype.loadGeometry=function(){var t=this.rawGeometry;this.geometry=[];for(var e=0;e<t.length;e++){for(var r=t[e],n=[],i=0;i<r.length;i++)n.push(new o(r[i][0],r[i][1]));this.geometry.push(n)}return this.geometry},i.prototype.bbox=function(){this.geometry||this.loadGeometry();for(var t=this.geometry,e=1/0,r=-(1/0),n=1/0,i=-(1/0),o=0;o<t.length;o++)for(var a=t[o],s=0;s<a.length;s++){var l=a[s];e=Math.min(e,l.x),r=Math.max(r,l.x),n=Math.min(n,l.y),i=Math.max(i,l.y)}return[e,n,r,i]},i.prototype.toGeoJSON=a.prototype.toGeoJSON},{"../data/bucket":247,"point-geometry":404,"vector-tile":413}],276:[function(t,e,r){"use strict";function n(t){this.urls=t.urls,this.coordinates=t.coordinates,c.getImage(t.url,function(e,r){e||(this.image=r,this.image.addEventListener("load",function(){this.map._rerender()}.bind(this)),this._loaded=!0,this.map&&this.setCoordinates(t.coordinates))}.bind(this))}var i=t("../util/util"),o=t("./tile"),a=t("./tile_coord"),s=t("../geo/lng_lat"),l=t("point-geometry"),u=t("../util/evented"),c=t("../util/ajax"),h=t("../data/bucket").EXTENT,f=t("../render/draw_raster").RasterBoundsArray,d=t("../data/buffer"),p=t("../render/vertex_array_object");e.exports=n,n.prototype=i.inherit(u,{onAdd:function(t){this.map=t,this.image&&this.setCoordinates(this.coordinates)},setCoordinates:function(t){this.coordinates=t;var e=this.map,r=t.map(function(t){return e.transform.locationCoordinate(s.convert(t)).zoomTo(0)}),n=this.centerCoord=i.getCoordinatesCenter(r);n.column=Math.round(n.column),n.row=Math.round(n.row);var u=r.map(function(t){var e=t.zoomTo(n.zoom);return new l(Math.round((e.column-n.column)*h),Math.round((e.row-n.row)*h))}),c=32767,v=new f;return v.emplaceBack(u[0].x,u[0].y,0,0),v.emplaceBack(u[1].x,u[1].y,c,0),v.emplaceBack(u[3].x,u[3].y,0,c),v.emplaceBack(u[2].x,u[2].y,c,c),this.tile=new o(new a(n.zoom,n.column,n.row)),this.tile.buckets={},this.tile.boundsBuffer=new d(v.serialize(),f.serialize(),d.BufferType.VERTEX),this.tile.boundsVAO=new p,this.fire("change"),this},loaded:function(){return this.image&&this.image.complete},update:function(){},reload:function(){},prepare:function(){if(this._loaded&&this.loaded()){var t=this.map.painter,e=t.gl;this.tile.texture?(e.bindTexture(e.TEXTURE_2D,this.tile.texture),e.texSubImage2D(e.TEXTURE_2D,0,0,0,e.RGBA,e.UNSIGNED_BYTE,this.image)):(this.tile.texture=e.createTexture(),e.bindTexture(e.TEXTURE_2D,this.tile.texture),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_S,e.CLAMP_TO_EDGE),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_T,e.CLAMP_TO_EDGE),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MIN_FILTER,e.LINEAR),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MAG_FILTER,e.LINEAR),e.texImage2D(e.TEXTURE_2D,0,e.RGBA,e.RGBA,e.UNSIGNED_BYTE,this.image))}},getVisibleCoordinates:function(){return this.tile?[this.tile.coord]:[]},getTile:function(){return this.tile},serialize:function(){return{type:"image",urls:this.urls,coordinates:this.coordinates}}})},{"../data/bucket":247,"../data/buffer":252,"../geo/lng_lat":256,"../render/draw_raster":267,"../render/vertex_array_object":273,"../util/ajax":334,"../util/evented":341,"../util/util":349,"./tile":280,"./tile_coord":281,"point-geometry":404}],277:[function(t,e,r){"use strict";var n=t("../data/bucket");e.exports=function(t,e,r){return e*(n.EXTENT/(t.tileSize*Math.pow(2,r-t.coord.z)))}},{"../data/bucket":247}],278:[function(t,e,r){"use strict";function n(t){i.extend(this,i.pick(t,["url","tileSize"])),s._loadTileJSON.call(this,t)}var i=t("../util/util"),o=t("../util/ajax"),a=t("../util/evented"),s=t("./source"),l=t("../util/mapbox").normalizeTileURL;e.exports=n,n.prototype=i.inherit(a,{minzoom:0,maxzoom:22,roundZoom:!0,tileSize:512,_loaded:!1,onAdd:function(t){this.map=t},loaded:function(){return this._pyramid&&this._pyramid.loaded()},update:function(t){this._pyramid&&this._pyramid.update(this.used,t,this.map.style.rasterFadeDuration)},reload:function(){},serialize:function(){return{type:"raster",url:this.url,tileSize:this.tileSize}},getVisibleCoordinates:s._getVisibleCoordinates,getTile:s._getTile,_loadTile:function(t){function e(e,r){if(delete t.request,!t.aborted){if(e)return t.errored=!0,void this.fire("tile.error",{tile:t,error:e});var n=this.map.painter.gl;t.texture=this.map.painter.getTexture(r.width),t.texture?(n.bindTexture(n.TEXTURE_2D,t.texture),n.texSubImage2D(n.TEXTURE_2D,0,0,0,n.RGBA,n.UNSIGNED_BYTE,r)):(t.texture=n.createTexture(),n.bindTexture(n.TEXTURE_2D,t.texture),n.texParameteri(n.TEXTURE_2D,n.TEXTURE_MIN_FILTER,n.LINEAR_MIPMAP_NEAREST),n.texParameteri(n.TEXTURE_2D,n.TEXTURE_MAG_FILTER,n.LINEAR),n.texParameteri(n.TEXTURE_2D,n.TEXTURE_WRAP_S,n.CLAMP_TO_EDGE),n.texParameteri(n.TEXTURE_2D,n.TEXTURE_WRAP_T,n.CLAMP_TO_EDGE),n.pixelStorei(n.UNPACK_PREMULTIPLY_ALPHA_WEBGL,!0),n.texImage2D(n.TEXTURE_2D,0,n.RGBA,n.RGBA,n.UNSIGNED_BYTE,r),t.texture.size=r.width),n.generateMipmap(n.TEXTURE_2D),t.timeAdded=(new Date).getTime(),this.map.animationLoop.set(this.style.rasterFadeDuration),t.source=this,t.loaded=!0,this.fire("tile.load",{tile:t})}}var r=l(t.coord.url(this.tiles),this.url,this.tileSize);t.request=o.getImage(r,e.bind(this))},_abortTile:function(t){t.aborted=!0,t.request&&(t.request.abort(),delete t.request)},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.texture&&this.map.painter.saveTexture(t.texture)}})},{"../util/ajax":334,"../util/evented":341,"../util/mapbox":346,"../util/util":349,"./source":279}],279:[function(t,e,r){"use strict";function n(t,e){var r=t.tile.coord,n=e.tile.coord;return r.z-n.z||r.y-n.y||r.x-n.x}function i(t){for(var e=t[0]||{},r=1;r<t.length;r++){var n=t[r];for(var i in n){var o=n[i],a=e[i];if(void 0===a)a=e[i]=o;else for(var s=0;s<o.length;s++)a.push(o[s])}}return e}var o=t("../util/util"),a=t("../util/ajax"),s=t("../util/browser"),l=t("./tile_pyramid"),u=t("../util/mapbox").normalizeSourceURL,c=t("./tile_coord");r._loadTileJSON=function(t){var e=function(t,e){return t?void this.fire("error",{error:t}):(o.extend(this,o.pick(e,["tiles","minzoom","maxzoom","attribution"])),e.vector_layers&&(this.vectorLayers=e.vector_layers,this.vectorLayerIds=this.vectorLayers.map(function(t){return t.id})),this._pyramid=new l({tileSize:this.tileSize,minzoom:this.minzoom,maxzoom:this.maxzoom,roundZoom:this.roundZoom,reparseOverscaled:this.reparseOverscaled,load:this._loadTile.bind(this),abort:this._abortTile.bind(this),unload:this._unloadTile.bind(this),add:this._addTile.bind(this),remove:this._removeTile.bind(this),redoPlacement:this._redoTilePlacement?this._redoTilePlacement.bind(this):void 0}),void this.fire("load"))}.bind(this);t.url?a.getJSON(u(t.url),e):s.frame(e.bind(this,null,t))},r.redoPlacement=function(){if(this._pyramid)for(var t=this._pyramid.orderedIDs(),e=0;e<t.length;e++){var r=this._pyramid.getTile(t[e]);this._redoTilePlacement(r)}},r._getTile=function(t){return this._pyramid.getTile(t.id)},r._getVisibleCoordinates=function(){return this._pyramid?this._pyramid.renderedIDs().map(c.fromID):[]},r._queryRenderedVectorFeatures=function(t,e,r,o){if(!this._pyramid)return{};var a=this._pyramid.tilesIn(t);a.sort(n);for(var s=this.map.style._layers,l=[],u=0;u<a.length;u++){var c=a[u];c.tile.featureIndex&&l.push(c.tile.featureIndex.query({queryGeometry:c.queryGeometry,scale:c.scale,tileSize:c.tile.tileSize,bearing:o,params:e},s))}return i(l)},r._querySourceFeatures=function(t){if(!this._pyramid)return[];for(var e=this._pyramid,r=e.renderedIDs().map(function(t){return e.getTile(t)}),n=[],i={},o=0;o<r.length;o++){var a=r[o],s=new c(Math.min(a.sourceMaxZoom,a.coord.z),a.coord.x,a.coord.y,0).id;i[s]||(i[s]=!0,a.querySourceFeatures(n,t))}return n},r.create=function(e){var n={vector:t("./vector_tile_source"),raster:t("./raster_tile_source"),geojson:t("./geojson_source"),video:t("./video_source"),image:t("./image_source")};return r.is(e)?e:new n[e.type](e)},r.is=function(e){var r={vector:t("./vector_tile_source"),raster:t("./raster_tile_source"),geojson:t("./geojson_source"),video:t("./video_source"),image:t("./image_source")};for(var n in r)if(e instanceof r[n])return!0;return!1}},{"../util/ajax":334,"../util/browser":335,"../util/mapbox":346,"../util/util":349,"./geojson_source":274,"./image_source":276,"./raster_tile_source":278,"./tile_coord":281,"./tile_pyramid":282,"./vector_tile_source":283,"./video_source":284}],280:[function(t,e,r){"use strict";function n(t,e,r){this.coord=t,this.uid=o.uniqueId(),this.loaded=!1,this.isUnloaded=!1,this.uses=0,this.tileSize=e,this.sourceMaxZoom=r,this.buckets={}}function i(t,e){for(var r={},n=0;n<t.length;n++){var i=e.getLayer(t[n].layerId);if(i){var s=a.create(o.extend({layer:i,childLayers:t[n].childLayerIds.map(e.getLayer.bind(e)).filter(function(t){return t})},t[n]));r[s.id]=s}}return r}var o=t("../util/util"),a=t("../data/bucket"),s=t("../data/feature_index"),l=t("vector-tile"),u=t("pbf"),c=t("../util/vectortile_to_geojson"),h=t("feature-filter"),f=t("../symbol/collision_tile"),d=t("../symbol/collision_box");e.exports=n,n.prototype={loadVectorData:function(t,e){this.loaded=!0,t&&(this.collisionBoxArray=new d(t.collisionBoxArray),this.collisionTile=new f(t.collisionTile,this.collisionBoxArray),this.featureIndex=new s(t.featureIndex,t.rawTileData,this.collisionTile),this.rawTileData=t.rawTileData,this.buckets=i(t.buckets,e))},reloadSymbolData:function(t,e,r){if(!this.isUnloaded){this.collisionTile=new f(t.collisionTile,this.collisionBoxArray),this.featureIndex.setCollisionTile(this.collisionTile);for(var n in this.buckets){var a=this.buckets[n];"symbol"===a.type&&(a.destroy(e.gl),delete this.buckets[n])}o.extend(this.buckets,i(t.buckets,r))}},unloadVectorData:function(t){for(var e in this.buckets){var r=this.buckets[e];r.destroy(t.gl)}this.collisionBoxArray=null,this.collisionTile=null,this.featureIndex=null,this.rawTileData=null,this.buckets=null,this.loaded=!1,this.isUnloaded=!0},redoPlacement:function(t){function e(e,r){this.reloadSymbolData(r,t.map.painter,t.map.style),t.fire("tile.load",{tile:this}),this.redoingPlacement=!1,this.redoWhenDone&&(this.redoPlacement(t),this.redoWhenDone=!1)}return!this.loaded||this.redoingPlacement?void(this.redoWhenDone=!0):(this.redoingPlacement=!0,void t.dispatcher.send("redo placement",{uid:this.uid,source:t.id,angle:t.map.transform.angle,pitch:t.map.transform.pitch,showCollisionBoxes:t.map.showCollisionBoxes},e.bind(this),this.workerID))},getBucket:function(t){return this.buckets&&this.buckets[t.ref||t.id]},querySourceFeatures:function(t,e){if(this.rawTileData){this.vtLayers||(this.vtLayers=new l.VectorTile(new u(new Uint8Array(this.rawTileData))).layers);var r=this.vtLayers._geojsonTileLayer||this.vtLayers[e.sourceLayer];if(r)for(var n=h(e.filter),i={z:this.coord.z,x:this.coord.x,y:this.coord.y},o=0;o<r.length;o++){var a=r.feature(o);if(n(a)){var s=new c(a,this.coord.z,this.coord.x,this.coord.y);s.tile=i,t.push(s)}}}}}},{"../data/bucket":247,"../data/feature_index":253,"../symbol/collision_box":306,"../symbol/collision_tile":308,"../util/util":349,"../util/vectortile_to_geojson":350,"feature-filter":352,pbf:402,"vector-tile":413}],281:[function(t,e,r){"use strict";function n(t,e,r,n){s(!isNaN(t)&&t>=0&&t%1===0),s(!isNaN(e)&&e>=0&&e%1===0),s(!isNaN(r)&&r>=0&&r%1===0),isNaN(n)&&(n=0),this.z=+t,this.x=+e,this.y=+r,this.w=+n,n*=2,0>n&&(n=-1*n-1);var i=1<<this.z;this.id=32*(i*i*n+i*this.y+this.x)+this.z,this.posMatrix=null}function i(t,e){if(t.row>e.row){var r=t;t=e,e=r}return{x0:t.column,y0:t.row,x1:e.column,y1:e.row,dx:e.column-t.column,dy:e.row-t.row}}function o(t,e,r,n,i){var o=Math.max(r,Math.floor(e.y0)),a=Math.min(n,Math.ceil(e.y1));if(t.x0===e.x0&&t.y0===e.y0?t.x0+e.dy/t.dy*t.dx<e.x1:t.x1-e.dy/t.dy*t.dx<e.x0){var s=t;t=e,e=s}for(var l=t.dx/t.dy,u=e.dx/e.dy,c=t.dx>0,h=e.dx<0,f=o;a>f;f++){var d=l*Math.max(0,Math.min(t.dy,f+c-t.y0))+t.x0,p=u*Math.max(0,Math.min(e.dy,f+h-e.y0))+e.x0;i(Math.floor(p),Math.ceil(d),f)}}function a(t,e,r,n,a,s){var l,u=i(t,e),c=i(e,r),h=i(r,t);u.dy>c.dy&&(l=u,u=c,c=l),u.dy>h.dy&&(l=u,u=h,h=l),c.dy>h.dy&&(l=c,c=h,h=l),u.dy&&o(h,u,n,a,s),c.dy&&o(h,c,n,a,s)}var s=t("assert"),l=t("../geo/coordinate");e.exports=n,n.prototype.toString=function(){return this.z+"/"+this.x+"/"+this.y},n.prototype.toCoordinate=function(t){var e=Math.min(this.z,t),r=Math.pow(2,e),n=this.y,i=this.x+r*this.w;return new l(i,n,e)},n.fromID=function(t){var e=t%32,r=1<<e,i=(t-e)/32,o=i%r,a=(i-o)/r%r,s=Math.floor(i/(r*r));return s%2!==0&&(s=-1*s-1),s/=2,new n(e,o,a,s)},n.prototype.url=function(t,e){return t[(this.x+this.y)%t.length].replace("{prefix}",(this.x%16).toString(16)+(this.y%16).toString(16)).replace("{z}",Math.min(this.z,e||this.z)).replace("{x}",this.x).replace("{y}",this.y)},n.prototype.parent=function(t){return 0===this.z?null:this.z>t?new n(this.z-1,this.x,this.y,this.w):new n(this.z-1,Math.floor(this.x/2),Math.floor(this.y/2),this.w)},n.prototype.wrapped=function(){return new n(this.z,this.x,this.y,0)},n.prototype.children=function(t){if(this.z>=t)return[new n(this.z+1,this.x,this.y,this.w)];var e=this.z+1,r=2*this.x,i=2*this.y;return[new n(e,r,i,this.w),new n(e,r+1,i,this.w),new n(e,r,i+1,this.w),new n(e,r+1,i+1,this.w)]},n.cover=function(t,e,r){function i(t,e,i){var a,l,u;if(i>=0&&o>=i)for(a=t;e>a;a++)l=(a%o+o)%o,u=new n(r,l,i,Math.floor(a/o)),s[u.id]=u}var o=1<<t,s={};return a(e[0],e[1],e[2],0,o,i),a(e[2],e[3],e[0],0,o,i),Object.keys(s).map(function(t){return s[t]})}},{"../geo/coordinate":255,assert:52}],282:[function(t,e,r){"use strict";function n(t){this.tileSize=t.tileSize,this.minzoom=t.minzoom,this.maxzoom=t.maxzoom,this.roundZoom=t.roundZoom,this.reparseOverscaled=t.reparseOverscaled,this._load=t.load,this._abort=t.abort,this._unload=t.unload,this._add=t.add,this._remove=t.remove,this._redoPlacement=t.redoPlacement,this._tiles={},this._cache=new u(0,function(t){return this._unload(t)}.bind(this)),this._filterRendered=this._filterRendered.bind(this)}function i(t,e,r){var n=r.zoomTo(Math.min(t.z,e));return{x:(n.column-(t.x+t.w*Math.pow(2,t.z)))*f,y:(n.row-t.y)*f}}function o(t,e){return t%32-e%32}var a=t("./tile"),s=t("./tile_coord"),l=t("point-geometry"),u=t("../util/lru_cache"),c=t("../geo/coordinate"),h=t("../util/util"),f=t("../data/bucket").EXTENT;e.exports=n,n.maxOverzooming=10,n.maxUnderzooming=3,n.prototype={loaded:function(){for(var t in this._tiles)if(!this._tiles[t].loaded&&!this._tiles[t].errored)return!1;return!0},orderedIDs:function(){return Object.keys(this._tiles).map(Number).sort(o)},renderedIDs:function(){return this.orderedIDs().filter(this._filterRendered)},_filterRendered:function(t){return this._tiles[t].loaded&&!this._coveredTiles[t]},reload:function(){this._cache.reset();for(var t in this._tiles)this._load(this._tiles[t])},getTile:function(t){return this._tiles[t]},getZoom:function(t){return t.zoom+Math.log(t.tileSize/this.tileSize)/Math.LN2},coveringZoomLevel:function(t){return(this.roundZoom?Math.round:Math.floor)(this.getZoom(t))},coveringTiles:function(t){var e=this.coveringZoomLevel(t),r=e;if(e<this.minzoom)return[];e>this.maxzoom&&(e=this.maxzoom);var n=t,i=n.locationCoordinate(n.center)._zoomTo(e),o=new l(i.column-.5,i.row-.5);return s.cover(e,[n.pointCoordinate(new l(0,0))._zoomTo(e),n.pointCoordinate(new l(n.width,0))._zoomTo(e),n.pointCoordinate(new l(n.width,n.height))._zoomTo(e),n.pointCoordinate(new l(0,n.height))._zoomTo(e)],this.reparseOverscaled?r:e).sort(function(t,e){return o.dist(t)-o.dist(e)})},findLoadedChildren:function(t,e,r){var n=!1;for(var i in this._tiles){var o=this._tiles[i];if(!(r[i]||!o.loaded||o.coord.z<=t.z||o.coord.z>e)){
+-var a=Math.pow(2,Math.min(o.coord.z,this.maxzoom)-Math.min(t.z,this.maxzoom));if(Math.floor(o.coord.x/a)===t.x&&Math.floor(o.coord.y/a)===t.y)for(r[i]=!0,n=!0;o&&o.coord.z-1>t.z;){var s=o.coord.parent(this.maxzoom).id;o=this._tiles[s],o&&o.loaded&&(delete r[i],r[s]=!0)}}}return n},findLoadedParent:function(t,e,r){for(var n=t.z-1;n>=e;n--){t=t.parent(this.maxzoom);var i=this._tiles[t.id];if(i&&i.loaded)return r[t.id]=!0,i;if(this._cache.has(t.id))return this.addTile(t),r[t.id]=!0,this._tiles[t.id]}},updateCacheSize:function(t){var e=Math.ceil(t.width/t.tileSize)+1,r=Math.ceil(t.height/t.tileSize)+1,n=e*r,i=5;this._cache.setMaxSize(Math.floor(n*i))},update:function(t,e,r){var i,o,a;this.updateCacheSize(e);var l=(this.roundZoom?Math.round:Math.floor)(this.getZoom(e)),u=Math.max(l-n.maxOverzooming,this.minzoom),c=Math.max(l+n.maxUnderzooming,this.minzoom),f={},d=(new Date).getTime();this._coveredTiles={};var p=t?this.coveringTiles(e):[];for(i=0;i<p.length;i++)o=p[i],a=this.addTile(o),f[o.id]=!0,a.loaded||this.findLoadedChildren(o,c,f)||this.findLoadedParent(o,u,f);for(var v={},m=Object.keys(f),g=0;g<m.length;g++){var y=m[g];o=s.fromID(y),a=this._tiles[y],a&&a.timeAdded>d-(r||0)&&(this.findLoadedChildren(o,c,f)&&(f[y]=!0),this.findLoadedParent(o,u,v))}var b;for(b in v)f[b]||(this._coveredTiles[b]=!0);for(b in v)f[b]=!0;var x=h.keysDifference(this._tiles,f);for(i=0;i<x.length;i++)this.removeTile(+x[i]);this.transform=e},addTile:function(t){var e=this._tiles[t.id];if(e)return e;var r=t.wrapped();if(e=this._tiles[r.id],e||(e=this._cache.get(r.id),e&&this._redoPlacement&&this._redoPlacement(e)),!e){var n=t.z,i=n>this.maxzoom?Math.pow(2,n-this.maxzoom):1;e=new a(r,this.tileSize*i,this.maxzoom),this._load(e)}return e.uses++,this._tiles[t.id]=e,this._add(e,t),e},removeTile:function(t){var e=this._tiles[t];e&&(e.uses--,delete this._tiles[t],this._remove(e),e.uses>0||(e.loaded?this._cache.add(e.coord.wrapped().id,e):(this._abort(e),this._unload(e))))},clearTiles:function(){for(var t in this._tiles)this.removeTile(t);this._cache.reset()},tilesIn:function(t){for(var e={},r=this.orderedIDs(),n=1/0,o=1/0,a=-(1/0),l=-(1/0),u=t[0].zoom,h=0;h<t.length;h++){var d=t[h];n=Math.min(n,d.column),o=Math.min(o,d.row),a=Math.max(a,d.column),l=Math.max(l,d.row)}for(var p=0;p<r.length;p++){var v=this._tiles[r[p]],m=s.fromID(r[p]),g=[i(m,v.sourceMaxZoom,new c(n,o,u)),i(m,v.sourceMaxZoom,new c(a,l,u))];if(g[0].x<f&&g[0].y<f&&g[1].x>=0&&g[1].y>=0){for(var y=[],b=0;b<t.length;b++)y.push(i(m,v.sourceMaxZoom,t[b]));var x=e[v.coord.id];void 0===x&&(x=e[v.coord.id]={tile:v,queryGeometry:[],scale:Math.pow(2,this.transform.zoom-v.coord.z)}),x.queryGeometry.push(y)}}var _=[];for(var w in e)_.push(e[w]);return _}}},{"../data/bucket":247,"../geo/coordinate":255,"../util/lru_cache":345,"../util/util":349,"./tile":280,"./tile_coord":281,"point-geometry":404}],283:[function(t,e,r){"use strict";function n(t){if(i.extend(this,i.pick(t,["url","tileSize"])),this._options=i.extend({type:"vector"},t),512!==this.tileSize)throw new Error("vector tile sources must have a tileSize of 512");a._loadTileJSON.call(this,t)}var i=t("../util/util"),o=t("../util/evented"),a=t("./source"),s=t("../util/mapbox").normalizeTileURL;e.exports=n,n.prototype=i.inherit(o,{minzoom:0,maxzoom:22,tileSize:512,reparseOverscaled:!0,_loaded:!1,isTileClipped:!0,onAdd:function(t){this.map=t},loaded:function(){return this._pyramid&&this._pyramid.loaded()},update:function(t){this._pyramid&&this._pyramid.update(this.used,t)},reload:function(){this._pyramid&&this._pyramid.reload()},serialize:function(){return i.extend({},this._options)},getVisibleCoordinates:a._getVisibleCoordinates,getTile:a._getTile,queryRenderedFeatures:a._queryRenderedVectorFeatures,querySourceFeatures:a._querySourceFeatures,_loadTile:function(t){var e=t.coord.z>this.maxzoom?Math.pow(2,t.coord.z-this.maxzoom):1,r={url:s(t.coord.url(this.tiles,this.maxzoom),this.url),uid:t.uid,coord:t.coord,zoom:t.coord.z,tileSize:this.tileSize*e,source:this.id,overscaling:e,angle:this.map.transform.angle,pitch:this.map.transform.pitch,showCollisionBoxes:this.map.showCollisionBoxes};t.workerID?(r.rawTileData=t.rawTileData,this.dispatcher.send("reload tile",r,this._tileLoaded.bind(this,t),t.workerID)):t.workerID=this.dispatcher.send("load tile",r,this._tileLoaded.bind(this,t))},_tileLoaded:function(t,e,r){if(!t.aborted){if(e)return t.errored=!0,void this.fire("tile.error",{tile:t,error:e});t.loadVectorData(r,this.map.style),t.redoWhenDone&&(t.redoWhenDone=!1,t.redoPlacement(this)),this.fire("tile.load",{tile:t}),this.fire("tile.stats",r.bucketStats)}},_abortTile:function(t){t.aborted=!0,this.dispatcher.send("abort tile",{uid:t.uid,source:this.id},null,t.workerID)},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.unloadVectorData(this.map.painter),this.dispatcher.send("remove tile",{uid:t.uid,source:this.id},null,t.workerID)},redoPlacement:a.redoPlacement,_redoTilePlacement:function(t){t.redoPlacement(this)}})},{"../util/evented":341,"../util/mapbox":346,"../util/util":349,"./source":279}],284:[function(t,e,r){"use strict";function n(t){this.urls=t.urls,this.coordinates=t.coordinates,c.getVideo(t.urls,function(e,r){if(!e){this.video=r,this.video.loop=!0;var n;this.video.addEventListener("playing",function(){n=this.map.style.animationLoop.set(1/0),this.map._rerender()}.bind(this)),this.video.addEventListener("pause",function(){this.map.style.animationLoop.cancel(n)}.bind(this)),this._loaded=!0,this.map&&(this.video.play(),this.setCoordinates(t.coordinates))}}.bind(this))}var i=t("../util/util"),o=t("./tile"),a=t("./tile_coord"),s=t("../geo/lng_lat"),l=t("point-geometry"),u=t("../util/evented"),c=t("../util/ajax"),h=t("../data/bucket").EXTENT,f=t("../render/draw_raster").RasterBoundsArray,d=t("../data/buffer"),p=t("../render/vertex_array_object");e.exports=n,n.prototype=i.inherit(u,{roundZoom:!0,getVideo:function(){return this.video},onAdd:function(t){this.map=t,this.video&&(this.video.play(),this.setCoordinates(this.coordinates))},setCoordinates:function(t){this.coordinates=t;var e=this.map,r=t.map(function(t){return e.transform.locationCoordinate(s.convert(t)).zoomTo(0)}),n=this.centerCoord=i.getCoordinatesCenter(r);n.column=Math.round(n.column),n.row=Math.round(n.row);var u=r.map(function(t){var e=t.zoomTo(n.zoom);return new l(Math.round((e.column-n.column)*h),Math.round((e.row-n.row)*h))}),c=32767,v=new f;return v.emplaceBack(u[0].x,u[0].y,0,0),v.emplaceBack(u[1].x,u[1].y,c,0),v.emplaceBack(u[3].x,u[3].y,0,c),v.emplaceBack(u[2].x,u[2].y,c,c),this.tile=new o(new a(n.zoom,n.column,n.row)),this.tile.buckets={},this.tile.boundsBuffer=new d(v.serialize(),f.serialize(),d.BufferType.VERTEX),this.tile.boundsVAO=new p,this.fire("change"),this},loaded:function(){return this.video&&this.video.readyState>=2},update:function(){},reload:function(){},prepare:function(){if(this._loaded&&!(this.video.readyState<2)){var t=this.map.painter.gl;this.tile.texture?(t.bindTexture(t.TEXTURE_2D,this.tile.texture),t.texSubImage2D(t.TEXTURE_2D,0,0,0,t.RGBA,t.UNSIGNED_BYTE,this.video)):(this.tile.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.tile.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texImage2D(t.TEXTURE_2D,0,t.RGBA,t.RGBA,t.UNSIGNED_BYTE,this.video)),this._currentTime=this.video.currentTime}},getVisibleCoordinates:function(){return this.tile?[this.tile.coord]:[]},getTile:function(){return this.tile},serialize:function(){return{type:"video",urls:this.urls,coordinates:this.coordinates}}})},{"../data/bucket":247,"../data/buffer":252,"../geo/lng_lat":256,"../render/draw_raster":267,"../render/vertex_array_object":273,"../util/ajax":334,"../util/evented":341,"../util/util":349,"./tile":280,"./tile_coord":281,"point-geometry":404}],285:[function(t,e,r){"use strict";function n(t){this.self=t,this.actor=new o(t,this),this.loading={},this.loaded={},this.geoJSONIndexes={}}function i(t){var e={};for(var r in t){var n=t[r],i=n.ref||n.id,o=t[i];o.layout&&"none"===o.layout.visibility||(e[i]=e[i]||[],r===i?e[i].unshift(n):e[i].push(n))}return e}var o=t("../util/actor"),a=t("./worker_tile"),s=t("../style/style_layer"),l=t("../util/util"),u=t("../util/ajax"),c=t("vector-tile"),h=t("pbf"),f=t("supercluster"),d=t("geojson-vt"),p=t("geojson-rewind"),v=t("./geojson_wrapper"),m=t("vt-pbf");e.exports=function(t){return new n(t)},l.extend(n.prototype,{"set layers":function(t){function e(t){var e=s.create(t,t.ref&&r.layers[t.ref]);e.updatePaintTransitions({},{transition:!1}),r.layers[e.id]=e}this.layers={};for(var r=this,n=[],o=0;o<t.length;o++){var a=t[o];"fill"!==a.type&&"line"!==a.type&&"circle"!==a.type&&"symbol"!==a.type||(a.ref?n.push(o):e(a))}for(var l=0;l<n.length;l++)e(t[n[l]]);this.layerFamilies=i(this.layers)},"update layers":function(t){function e(t){var e=o.layers[t.ref];o.layers[t.id]?o.layers[t.id].set(t,e):o.layers[t.id]=s.create(t,e),o.layers[t.id].updatePaintTransitions({},{transition:!1})}var r,n,o=this;for(r in t)n=t[r],n.ref&&e(n);for(r in t)n=t[r],n.ref||e(n);this.layerFamilies=i(this.layers)},"load tile":function(t,e){function r(t,r){return delete this.loading[n][i],t?e(t):(o.data=new c.VectorTile(new h(new Uint8Array(r))),o.parse(o.data,this.layerFamilies,this.actor,r,e),this.loaded[n]=this.loaded[n]||{},void(this.loaded[n][i]=o))}var n=t.source,i=t.uid;this.loading[n]||(this.loading[n]={});var o=this.loading[n][i]=new a(t);o.xhr=u.getArrayBuffer(t.url,r.bind(this))},"reload tile":function(t,e){var r=this.loaded[t.source],n=t.uid;if(r&&r[n]){var i=r[n];i.parse(i.data,this.layerFamilies,this.actor,t.rawTileData,e)}},"abort tile":function(t){var e=this.loading[t.source],r=t.uid;e&&e[r]&&(e[r].xhr.abort(),delete e[r])},"remove tile":function(t){var e=this.loaded[t.source],r=t.uid;e&&e[r]&&delete e[r]},"redo placement":function(t,e){var r=this.loaded[t.source],n=this.loading[t.source],i=t.uid;if(r&&r[i]){var o=r[i],a=o.redoPlacement(t.angle,t.pitch,t.showCollisionBoxes);a.result&&e(null,a.result,a.transferables)}else n&&n[i]&&(n[i].angle=t.angle)},"parse geojson":function(t,e){var r=function(r,n){if(p(n,!0),r)return e(r);if("object"!=typeof n)return e(new Error("Input data is not a valid GeoJSON object."));try{this.geoJSONIndexes[t.source]=t.cluster?f(t.superclusterOptions).load(n.features):d(n,t.geojsonVtOptions)}catch(r){return e(r)}e(null)}.bind(this);if(t.url)u.getJSON(t.url,r);else{if("string"!=typeof t.data)return e(new Error("Input data is not a valid GeoJSON object."));r(null,JSON.parse(t.data))}},"load geojson tile":function(t,e){var r=t.source,n=t.coord;if(!this.geoJSONIndexes[r])return e(null,null);var i=this.geoJSONIndexes[r].getTile(Math.min(n.z,t.maxZoom),n.x,n.y),o=i?new a(t):void 0;if(this.loaded[r]=this.loaded[r]||{},this.loaded[r][t.uid]=o,!i)return e(null,null);var s=new v(i.features);s.name="_geojsonTileLayer";var l=m({layers:{_geojsonTileLayer:s}}).buffer;o.parse(s,this.layerFamilies,this.actor,l,e)}})},{"../style/style_layer":293,"../util/actor":333,"../util/ajax":334,"../util/util":349,"./geojson_wrapper":275,"./worker_tile":286,"geojson-rewind":353,"geojson-vt":358,pbf:402,supercluster:407,"vector-tile":413,"vt-pbf":417}],286:[function(t,e,r){"use strict";function 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layers",this._serializeLayers(t))},_serializeLayers:function(t){t=t||this._order;for(var e=[],r={includeRefProperties:!0},n=0;n<t.length;n++)e.push(this._layers[t[n]].serialize(r));return e},_applyClasses:function(t,e){if(this._loaded){t=t||[],e=e||{transition:!0};var r=this.stylesheet.transition||{},n=this._updates.allPaintProps?this._layers:this._updates.paintProps;for(var i in n){var o=this._layers[i],a=this._updates.paintProps[i];if(this._updates.allPaintProps||a.all)o.updatePaintTransitions(t,e,r,this.animationLoop);else for(var s in a)this._layers[i].updatePaintTransition(s,t,e,r,this.animationLoop)}}},_recalculate:function(t){for(var e in this.sources)this.sources[e].used=!1;this._updateZoomHistory(t),this.rasterFadeDuration=300;for(var r in this._layers){var n=this._layers[r];n.recalculate(t,this.zoomHistory),!n.isHidden(t)&&n.source&&(this.sources[n.source].used=!0)}var i=300;Math.floor(this.z)!==Math.floor(t)&&this.animationLoop.set(i),this.z=t,this.fire("zoom")},_updateZoomHistory:function(t){var e=this.zoomHistory;void 0===e.lastIntegerZoom&&(e.lastIntegerZoom=Math.floor(t),e.lastIntegerZoomTime=0,e.lastZoom=t),Math.floor(e.lastZoom)<Math.floor(t)?(e.lastIntegerZoom=Math.floor(t),e.lastIntegerZoomTime=Date.now()):Math.floor(e.lastZoom)>Math.floor(t)&&(e.lastIntegerZoom=Math.floor(t+1),e.lastIntegerZoomTime=Date.now()),e.lastZoom=t},_checkLoaded:function(){if(!this._loaded)throw new Error("Style is not done loading")},update:function(t,e){if(!this._updates.changed)return this;if(this._updates.allLayers)this._groupLayers(),this._updateWorkerLayers();else{var r=Object.keys(this._updates.layers);r.length&&this._updateWorkerLayers(r)}var n,i=Object.keys(this._updates.sources);for(n=0;n<i.length;n++)this._reloadSource(i[n]);for(n=0;n<this._updates.events.length;n++){var o=this._updates.events[n];this.fire(o[0],o[1])}return this._applyClasses(t,e),this._updates.changed&&this.fire("change"),this._resetUpdates(),this},_resetUpdates:function(){this._updates={events:[],layers:{},sources:{},paintProps:{}}},addSource:function(t,e){if(this._checkLoaded(),void 0!==this.sources[t])throw new Error("There is already a source with this ID");return!g.is(e)&&this._handleErrors(m.source,"sources."+t,e)?this:(e=g.create(e),this.sources[t]=e,e.id=t,e.style=this,e.dispatcher=this.dispatcher,e.on("load",this._forwardSourceEvent).on("error",this._forwardSourceEvent).on("change",this._forwardSourceEvent).on("tile.add",this._forwardTileEvent).on("tile.load",this._forwardTileEvent).on("tile.error",this._forwardTileEvent).on("tile.remove",this._forwardTileEvent).on("tile.stats",this._forwardTileEvent),this._updates.events.push(["source.add",{source:e}]),this._updates.changed=!0,this)},removeSource:function(t){if(this._checkLoaded(),void 0===this.sources[t])throw new Error("There is no source with this ID");var e=this.sources[t];return delete this.sources[t],e.off("load",this._forwardSourceEvent).off("error",this._forwardSourceEvent).off("change",this._forwardSourceEvent).off("tile.add",this._forwardTileEvent).off("tile.load",this._forwardTileEvent).off("tile.error",this._forwardTileEvent).off("tile.remove",this._forwardTileEvent).off("tile.stats",this._forwardTileEvent),this._updates.events.push(["source.remove",{source:e}]),this._updates.changed=!0,this},getSource:function(t){return this.sources[t]},addLayer:function(t,e){if(this._checkLoaded(),!(t instanceof o)){if(this._handleErrors(m.layer,"layers."+t.id,t,!1,{arrayIndex:-1}))return this;var r=t.ref&&this.getLayer(t.ref);t=o.create(t,r)}return this._validateLayer(t),t.on("error",this._forwardLayerEvent),this._layers[t.id]=t,this._order.splice(e?this._order.indexOf(e):1/0,0,t.id),this._updates.allLayers=!0,t.source&&(this._updates.sources[t.source]=!0),this._updates.events.push(["layer.add",{layer:t}]),this.updateClasses(t.id)},removeLayer:function(t){this._checkLoaded();var e=this._layers[t];if(void 0===e)throw new Error("There is no layer with this ID");for(var r in this._layers)this._layers[r].ref===t&&this.removeLayer(r);return e.off("error",this._forwardLayerEvent),delete this._layers[t],this._order.splice(this._order.indexOf(t),1),this._updates.allLayers=!0,this._updates.events.push(["layer.remove",{layer:e}]),this._updates.changed=!0,this},getLayer:function(t){return this._layers[t]},getReferentLayer:function(t){var e=this.getLayer(t);return e.ref&&(e=this.getLayer(e.ref)),e},setLayerZoomRange:function(t,e,r){this._checkLoaded();var n=this.getReferentLayer(t);return n.minzoom===e&&n.maxzoom===r?this:(null!=e&&(n.minzoom=e),null!=r&&(n.maxzoom=r),this._updateLayer(n))},setFilter:function(t,e){this._checkLoaded();var r=this.getReferentLayer(t);return this._handleErrors(m.filter,"layers."+r.id+".filter",e)?this:c.deepEqual(r.filter,e)?this:(r.filter=c.clone(e),this._updateLayer(r))},getFilter:function(t){return this.getReferentLayer(t).filter},setLayoutProperty:function(t,e,r){this._checkLoaded();var n=this.getReferentLayer(t);return c.deepEqual(n.getLayoutProperty(e),r)?this:(n.setLayoutProperty(e,r),this._updateLayer(n))},getLayoutProperty:function(t,e){return this.getReferentLayer(t).getLayoutProperty(e)},setPaintProperty:function(t,e,r,n){this._checkLoaded();var i=this.getLayer(t);if(c.deepEqual(i.getPaintProperty(e,n),r))return this;var o=i.isPaintValueFeatureConstant(e);i.setPaintProperty(e,r,n);var a=!(b.isFunctionDefinition(r)&&"$zoom"!==r.property&&void 0!==r.property);return 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this._updates.layers[t.id]=!0,t.source&&(this._updates.sources[t.source]=!0),this._updates.changed=!0,this},_flattenRenderedFeatures:function(t){for(var e=[],r=this._order.length-1;r>=0;r--)for(var n=this._order[r],i=0;i<t.length;i++){var o=t[i][n];if(o)for(var a=0;a<o.length;a++)e.push(o[a])}return e},queryRenderedFeatures:function(t,e,r,n){e&&e.filter&&this._handleErrors(m.filter,"queryRenderedFeatures.filter",e.filter,!0);var i=[];for(var o in this.sources){var a=this.sources[o];a.queryRenderedFeatures&&i.push(a.queryRenderedFeatures(t,e,r,n))}return this._flattenRenderedFeatures(i)},querySourceFeatures:function(t,e){e&&e.filter&&this._handleErrors(m.filter,"querySourceFeatures.filter",e.filter,!0);var r=this.getSource(t);return r&&r.querySourceFeatures?r.querySourceFeatures(e):[]},_handleErrors:function(t,e,r,n,i){var o=n?m.throwErrors:m.emitErrors,a=t.call(m,c.extend({key:e,style:this.serialize(),value:r,styleSpec:y},i));return 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r="color"===this.type?a(this.value):e;if(this.calculate=o[t.function||"piecewise-constant"](r),this.isFeatureConstant=this.calculate.isFeatureConstant,this.isZoomConstant=this.calculate.isZoomConstant,"piecewise-constant"===t.function&&t.transition&&(this.calculate=i(this.calculate)),!this.isFeatureConstant&&!this.isZoomConstant){this.stopZoomLevels=[];for(var n=[],l=this.value.stops,u=0;u<this.value.stops.length;u++){var c=l[u][0].zoom;this.stopZoomLevels.indexOf(c)<0&&(this.stopZoomLevels.push(c),n.push([c,n.length]))}this.calculateInterpolationT=o.interpolated({stops:n,base:e.base})}}function i(t){return function(e,r){var n,i,o,a=e.zoom,s=e.zoomHistory,l=e.duration,u=a%1,c=Math.min((Date.now()-s.lastIntegerZoomTime)/l,1),h=1,f=1;return a>s.lastIntegerZoom?(n=u+(1-u)*c,h*=2,i=t({zoom:a-1},r),o=t({zoom:a},r)):(n=1-(1-c)*u,o=t({zoom:a},r),i=t({zoom:a+1},r),h/=2),{from:i,fromScale:h,to:o,toScale:f,t:n}}}var o=t("./style_function"),a=t("./parse_color"),s=t("../util/util");e.exports=n},{"../util/util":349,"./parse_color":289,"./style_function":292}],292:[function(t,e,r){"use strict";var n=t("mapbox-gl-function");r.interpolated=function(t){var e=n.interpolated(t),r=function(t,r){return e(t&&t.zoom,r||{})};return r.isFeatureConstant=e.isFeatureConstant,r.isZoomConstant=e.isZoomConstant,r},r["piecewise-constant"]=function(t){var e=n["piecewise-constant"](t),r=function(t,r){return e(t&&t.zoom,r||{})};return r.isFeatureConstant=e.isFeatureConstant,r.isZoomConstant=e.isZoomConstant,r},r.isFunctionDefinition=n.isFunctionDefinition},{"mapbox-gl-function":374}],293:[function(t,e,r){"use strict";function n(t,e){this.set(t,e)}function i(t){return t.value}var o=t("../util/util"),a=t("./style_transition"),s=t("./style_declaration"),l=t("./style_spec"),u=t("./validate_style"),c=t("./parse_color"),h=t("../util/evented");e.exports=n;var f="-transition";n.create=function(e,r){var n={background:t("./style_layer/background_style_layer"),circle:t("./style_layer/circle_style_layer"),fill:t("./style_layer/fill_style_layer"),line:t("./style_layer/line_style_layer"),raster:t("./style_layer/raster_style_layer"),symbol:t("./style_layer/symbol_style_layer")};return new n[(r||e).type](e,r)},n.prototype=o.inherit(h,{set:function(t,e){this.id=t.id,this.ref=t.ref,this.metadata=t.metadata,this.type=(e||t).type,this.source=(e||t).source,this.sourceLayer=(e||t)["source-layer"],this.minzoom=(e||t).minzoom,this.maxzoom=(e||t).maxzoom,this.filter=(e||t).filter,this.paint={},this.layout={},this._paintSpecifications=l["paint_"+this.type],this._layoutSpecifications=l["layout_"+this.type],this._paintTransitions={},this._paintTransitionOptions={},this._paintDeclarations={},this._layoutDeclarations={},this._layoutFunctions={};var r,n;for(var i in t){var o=i.match(/^paint(?:\.(.*))?$/);if(o){var a=o[1]||"";for(r in t[i])this.setPaintProperty(r,t[i][r],a)}}if(this.ref)this._layoutDeclarations=e._layoutDeclarations;else for(n in t.layout)this.setLayoutProperty(n,t.layout[n]);for(r in this._paintSpecifications)this.paint[r]=this.getPaintValue(r);
+-for(n in this._layoutSpecifications)this._updateLayoutValue(n)},setLayoutProperty:function(t,e){if(null==e)delete this._layoutDeclarations[t];else{var r="layers."+this.id+".layout."+t;if(this._handleErrors(u.layoutProperty,r,t,e))return;this._layoutDeclarations[t]=new s(this._layoutSpecifications[t],e)}this._updateLayoutValue(t)},getLayoutProperty:function(t){return this._layoutDeclarations[t]&&this._layoutDeclarations[t].value},getLayoutValue:function(t,e,r){var n=this._layoutSpecifications[t],i=this._layoutDeclarations[t];return i?i.calculate(e,r):n.default},setPaintProperty:function(t,e,r){var n="layers."+this.id+(r?'["paint.'+r+'"].':".paint.")+t;if(o.endsWith(t,f))if(this._paintTransitionOptions[r||""]||(this._paintTransitionOptions[r||""]={}),null===e||void 0===e)delete this._paintTransitionOptions[r||""][t];else{if(this._handleErrors(u.paintProperty,n,t,e))return;this._paintTransitionOptions[r||""][t]=e}else if(this._paintDeclarations[r||""]||(this._paintDeclarations[r||""]={}),null===e||void 0===e)delete this._paintDeclarations[r||""][t];else{if(this._handleErrors(u.paintProperty,n,t,e))return;this._paintDeclarations[r||""][t]=new s(this._paintSpecifications[t],e)}},getPaintProperty:function(t,e){return e=e||"",o.endsWith(t,f)?this._paintTransitionOptions[e]&&this._paintTransitionOptions[e][t]:this._paintDeclarations[e]&&this._paintDeclarations[e][t]&&this._paintDeclarations[e][t].value},getPaintValue:function(t,e,r){var n=this._paintSpecifications[t],i=this._paintTransitions[t];return i?i.calculate(e,r):"color"===n.type&&n.default?c(n.default):n.default},getPaintValueStopZoomLevels:function(t){var e=this._paintTransitions[t];return e?e.declaration.stopZoomLevels:[]},getPaintInterpolationT:function(t,e){var r=this._paintTransitions[t];return r.declaration.calculateInterpolationT({zoom:e})},isPaintValueFeatureConstant:function(t){var e=this._paintTransitions[t];return e?e.declaration.isFeatureConstant:!0},isPaintValueZoomConstant:function(t){var e=this._paintTransitions[t];return e?e.declaration.isZoomConstant:!0},isHidden:function(t){return this.minzoom&&t<this.minzoom?!0:this.maxzoom&&t>=this.maxzoom?!0:"none"===this.layout.visibility?!0:0===this.paint[this.type+"-opacity"]},updatePaintTransitions:function(t,e,r,n){for(var i=o.extend({},this._paintDeclarations[""]),a=0;a<t.length;a++)o.extend(i,this._paintDeclarations[t[a]]);var s;for(s in i)this._applyPaintDeclaration(s,i[s],e,r,n);for(s in this._paintTransitions)s in i||this._applyPaintDeclaration(s,null,e,r,n)},updatePaintTransition:function(t,e,r,n,i){for(var o=this._paintDeclarations[""][t],a=0;a<e.length;a++){var s=this._paintDeclarations[e[a]];s&&s[t]&&(o=s[t])}this._applyPaintDeclaration(t,o,r,n,i)},recalculate:function(t,e){for(var r in this._paintTransitions)this.paint[r]=this.getPaintValue(r,{zoom:t,zoomHistory:e});for(var n in this._layoutFunctions)this.layout[n]=this.getLayoutValue(n,{zoom:t,zoomHistory:e})},serialize:function(t){var e={id:this.id,ref:this.ref,metadata:this.metadata,minzoom:this.minzoom,maxzoom:this.maxzoom};for(var r in this._paintDeclarations){var n=""===r?"paint":"paint."+r;e[n]=o.mapObject(this._paintDeclarations[r],i)}return(!this.ref||t&&t.includeRefProperties)&&o.extend(e,{type:this.type,source:this.source,"source-layer":this.sourceLayer,filter:this.filter,layout:o.mapObject(this._layoutDeclarations,i)}),o.filterObject(e,function(t,e){return void 0!==t&&!("layout"===e&&!Object.keys(t).length)})},_applyPaintDeclaration:function(t,e,r,n,i){var l=r.transition?this._paintTransitions[t]:void 0;if(null===e||void 0===e){var u=this._paintSpecifications[t];e=new s(u,u.default)}if(!l||l.declaration.json!==e.json){var c=o.extend({duration:300,delay:0},n,this.getPaintProperty(t+f)),h=this._paintTransitions[t]=new a(e,l,c);h.instant()||(h.loopID=i.set(h.endTime-Date.now())),l&&i.cancel(l.loopID)}},_updateLayoutValue:function(t){var e=this._layoutDeclarations[t];e&&e.isFunction?this._layoutFunctions[t]=!0:(delete this._layoutFunctions[t],this.layout[t]=this.getLayoutValue(t))},_handleErrors:function(t,e,r,n){return u.emitErrors(this,t.call(u,{key:e,layerType:this.type,objectKey:r,value:n,styleSpec:l,style:{glyphs:!0,sprite:!0}}))}})},{"../util/evented":341,"../util/util":349,"./parse_color":289,"./style_declaration":291,"./style_layer/background_style_layer":294,"./style_layer/circle_style_layer":295,"./style_layer/fill_style_layer":296,"./style_layer/line_style_layer":297,"./style_layer/raster_style_layer":298,"./style_layer/symbol_style_layer":299,"./style_spec":300,"./style_transition":301,"./validate_style":302}],294:[function(t,e,r){"use strict";function n(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=n,n.prototype=i.inherit(o,{})},{"../../util/util":349,"../style_layer":293}],295:[function(t,e,r){"use strict";function n(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=n,n.prototype=i.inherit(o,{})},{"../../util/util":349,"../style_layer":293}],296:[function(t,e,r){"use strict";function n(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=n,n.prototype=i.inherit(o,{})},{"../../util/util":349,"../style_layer":293}],297:[function(t,e,r){"use strict";function n(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=n,n.prototype=i.inherit(o,{getPaintValue:function(t,e,r){var n=o.prototype.getPaintValue.apply(this,arguments);if(n&&"line-dasharray"===t){var i=Math.floor(e.zoom);this._flooredZoom!==i&&(this._flooredZoom=i,this._flooredLineWidth=this.getPaintValue("line-width",e,r)),n.fromScale*=this._flooredLineWidth,n.toScale*=this._flooredLineWidth}return n}})},{"../../util/util":349,"../style_layer":293}],298:[function(t,e,r){"use strict";function n(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=n,n.prototype=i.inherit(o,{})},{"../../util/util":349,"../style_layer":293}],299:[function(t,e,r){"use strict";function n(){o.apply(this,arguments)}var i=t("../../util/util"),o=t("../style_layer");e.exports=n,n.prototype=i.inherit(o,{isHidden:function(){if(o.prototype.isHidden.apply(this,arguments))return!0;var t=0===this.paint["text-opacity"]||!this.layout["text-field"],e=0===this.paint["icon-opacity"]||!this.layout["icon-image"];return!(!t||!e)},getLayoutValue:function(t,e,r){return("text-rotation-alignment"!==t||"line"!==this.getLayoutValue("symbol-placement",e,r)||this.getLayoutProperty("text-rotation-alignment"))&&("icon-rotation-alignment"!==t||"line"!==this.getLayoutValue("symbol-placement",e,r)||this.getLayoutProperty("icon-rotation-alignment"))?o.prototype.getLayoutValue.apply(this,arguments):"map"}})},{"../../util/util":349,"../style_layer":293}],300:[function(t,e,r){"use strict";e.exports=t("mapbox-gl-style-spec/reference/latest")},{"mapbox-gl-style-spec/reference/latest":397}],301:[function(t,e,r){"use strict";function n(t,e,r){this.declaration=t,this.startTime=this.endTime=(new Date).getTime();var n=t.type;"string"!==n&&"array"!==n||!t.transitionable?this.interp=a[n]:this.interp=i,this.oldTransition=e,this.duration=r.duration||0,this.delay=r.delay||0,this.instant()||(this.endTime=this.startTime+this.duration+this.delay,this.ease=o.easeCubicInOut),e&&e.endTime<=this.startTime&&delete e.oldTransition}function i(t,e,r){return{from:t.to,fromScale:t.toScale,to:e.to,toScale:e.toScale,t:r}}var o=t("../util/util"),a=t("../util/interpolate");e.exports=n,n.prototype.instant=function(){return!this.oldTransition||!this.interp||0===this.duration&&0===this.delay},n.prototype.calculate=function(t,e){var r=this.declaration.calculate(o.extend({},t,{duration:this.duration}),e);if(this.instant())return r;var n=t.time||Date.now();if(n<this.endTime){var i=this.oldTransition.calculate(o.extend({},t,{time:this.startTime}),e),a=this.ease((n-this.startTime-this.delay)/this.duration);r=this.interp(i,r,a)}return r}},{"../util/interpolate":343,"../util/util":349}],302:[function(t,e,r){"use strict";e.exports=t("mapbox-gl-style-spec/lib/validate_style.min"),e.exports.emitErrors=function(t,e){if(e&&e.length){for(var r=0;r<e.length;r++)t.fire("error",{error:new Error(e[r].message)});return!0}return!1},e.exports.throwErrors=function(t,e){if(e)for(var r=0;r<e.length;r++)throw new Error(e[r].message)}},{"mapbox-gl-style-spec/lib/validate_style.min":396}],303:[function(t,e,r){"use strict";function n(t,e,r,n){this.x=t,this.y=e,this.angle=r,void 0!==n&&(this.segment=n)}var i=t("point-geometry");e.exports=n,n.prototype=Object.create(i.prototype),n.prototype.clone=function(){return new n(this.x,this.y,this.angle,this.segment)}},{"point-geometry":404}],304:[function(t,e,r){"use strict";function n(t,e,r,n,i){if(void 0===e.segment)return!0;for(var o=e,a=e.segment+1,s=0;s>-r/2;){if(a--,0>a)return!1;s-=t[a].dist(o),o=t[a]}s+=t[a].dist(t[a+1]),a++;for(var l=[],u=0;r/2>s;){var c=t[a-1],h=t[a],f=t[a+1];if(!f)return!1;var d=c.angleTo(h)-h.angleTo(f);for(d=Math.abs((d+3*Math.PI)%(2*Math.PI)-Math.PI),l.push({distance:s,angleDelta:d}),u+=d;s-l[0].distance>n;)u-=l.shift().angleDelta;if(u>i)return!1;a++,s+=h.dist(f)}return!0}e.exports=n},{}],305:[function(t,e,r){"use strict";function n(t,e,r,n,o){for(var a=[],s=0;s<t.length;s++)for(var l,u=t[s],c=0;c<u.length-1;c++){var h=u[c],f=u[c+1];h.x<e&&f.x<e||(h.x<e?h=new i(e,h.y+(f.y-h.y)*((e-h.x)/(f.x-h.x)))._round():f.x<e&&(f=new i(e,h.y+(f.y-h.y)*((e-h.x)/(f.x-h.x)))._round()),h.y<r&&f.y<r||(h.y<r?h=new i(h.x+(f.x-h.x)*((r-h.y)/(f.y-h.y)),r)._round():f.y<r&&(f=new i(h.x+(f.x-h.x)*((r-h.y)/(f.y-h.y)),r)._round()),h.x>=n&&f.x>=n||(h.x>=n?h=new i(n,h.y+(f.y-h.y)*((n-h.x)/(f.x-h.x)))._round():f.x>=n&&(f=new i(n,h.y+(f.y-h.y)*((n-h.x)/(f.x-h.x)))._round()),h.y>=o&&f.y>=o||(h.y>=o?h=new i(h.x+(f.x-h.x)*((o-h.y)/(f.y-h.y)),o)._round():f.y>=o&&(f=new i(h.x+(f.x-h.x)*((o-h.y)/(f.y-h.y)),o)._round()),l&&h.equals(l[l.length-1])||(l=[h],a.push(l)),l.push(f)))))}return a}var i=t("point-geometry");e.exports=n},{"point-geometry":404}],306:[function(t,e,r){"use strict";var n=t("../util/struct_array"),i=t("../util/util"),o=t("point-geometry"),a=e.exports=new n({members:[{type:"Int16",name:"anchorPointX"},{type:"Int16",name:"anchorPointY"},{type:"Int16",name:"x1"},{type:"Int16",name:"y1"},{type:"Int16",name:"x2"},{type:"Int16",name:"y2"},{type:"Float32",name:"maxScale"},{type:"Uint32",name:"featureIndex"},{type:"Uint16",name:"sourceLayerIndex"},{type:"Uint16",name:"bucketIndex"},{type:"Int16",name:"bbox0"},{type:"Int16",name:"bbox1"},{type:"Int16",name:"bbox2"},{type:"Int16",name:"bbox3"},{type:"Float32",name:"placementScale"}]});i.extendAll(a.prototype.StructType.prototype,{get anchorPoint(){return new o(this.anchorPointX,this.anchorPointY)}})},{"../util/struct_array":347,"../util/util":349,"point-geometry":404}],307:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s,l,u,c){var h=a.top*s-l,f=a.bottom*s+l,d=a.left*s-l,p=a.right*s+l;if(this.boxStartIndex=t.length,u){var v=f-h,m=p-d;if(v>0)if(v=Math.max(10*s,v),c){var g=e[r.segment+1].sub(e[r.segment])._unit()._mult(m),y=[r.sub(g),r.add(g)];this._addLineCollisionBoxes(t,y,r,0,m,v,n,i,o)}else this._addLineCollisionBoxes(t,e,r,r.segment,m,v,n,i,o)}else t.emplaceBack(r.x,r.y,d,h,p,f,1/0,n,i,o,0,0,0,0,0);this.boxEndIndex=t.length}e.exports=n,n.prototype._addLineCollisionBoxes=function(t,e,r,n,i,o,a,s,l){var u=o/2,c=Math.floor(i/u),h=-o/2,f=this.boxes,d=r,p=n+1,v=h;do{if(p--,0>p)return f;v-=e[p].dist(d),d=e[p]}while(v>-i/2);for(var m=e[p].dist(e[p+1]),g=0;c>g;g++){for(var y=-i/2+g*u;y>v+m;){if(v+=m,p++,p+1>=e.length)return f;m=e[p].dist(e[p+1])}var b=y-v,x=e[p],_=e[p+1],w=_.sub(x)._unit()._mult(b)._add(x)._round(),M=Math.max(Math.abs(y-h)-u/2,0),k=i/2/M;t.emplaceBack(w.x,w.y,-o/2,-o/2,o/2,o/2,k,a,s,l,0,0,0,0,0)}return f}},{}],308:[function(t,e,r){"use strict";function n(t,e,r){if("object"==typeof t){var n=t;r=e,t=n.angle,e=n.pitch,this.grid=new a(n.grid),this.ignoredGrid=new a(n.ignoredGrid)}else this.grid=new a(o,12,6),this.ignoredGrid=new a(o,12,0);this.angle=t,this.pitch=e;var i=Math.sin(t),s=Math.cos(t);if(this.rotationMatrix=[s,-i,i,s],this.reverseRotationMatrix=[s,i,-i,s],this.yStretch=1/Math.cos(e/180*Math.PI),this.yStretch=Math.pow(this.yStretch,1.3),this.collisionBoxArray=r,0===r.length){r.emplaceBack();var l=32767;r.emplaceBack(0,0,0,-l,0,l,l,0,0,0,0,0,0,0,0,0),r.emplaceBack(o,0,0,-l,0,l,l,0,0,0,0,0,0,0,0,0),r.emplaceBack(0,0,-l,0,l,0,l,0,0,0,0,0,0,0,0,0),r.emplaceBack(0,o,-l,0,l,0,l,0,0,0,0,0,0,0,0,0)}this.tempCollisionBox=r.get(0),this.edges=[r.get(1),r.get(2),r.get(3),r.get(4)]}var i=t("point-geometry"),o=t("../data/bucket").EXTENT,a=t("grid-index");e.exports=n,n.prototype.serialize=function(){var t={angle:this.angle,pitch:this.pitch,grid:this.grid.toArrayBuffer(),ignoredGrid:this.ignoredGrid.toArrayBuffer()};return{data:t,transferables:[t.grid,t.ignoredGrid]}},n.prototype.minScale=.25,n.prototype.maxScale=2,n.prototype.placeCollisionFeature=function(t,e,r){for(var n=this.collisionBoxArray,o=this.minScale,a=this.rotationMatrix,s=this.yStretch,l=t.boxStartIndex;l<t.boxEndIndex;l++){var u=n.get(l),c=u.anchorPoint._matMult(a),h=c.x,f=c.y,d=h+u.x1,p=f+u.y1*s,v=h+u.x2,m=f+u.y2*s;if(u.bbox0=d,u.bbox1=p,u.bbox2=v,u.bbox3=m,!e)for(var g=this.grid.query(d,p,v,m),y=0;y<g.length;y++){var b=n.get(g[y]),x=b.anchorPoint._matMult(a);if(o=this.getPlacementScale(o,c,u,x,b),o>=this.maxScale)return o}if(r){var _;if(this.angle){var w=this.reverseRotationMatrix,M=new i(u.x1,u.y1).matMult(w),k=new i(u.x2,u.y1).matMult(w),A=new i(u.x1,u.y2).matMult(w),T=new i(u.x2,u.y2).matMult(w);_=this.tempCollisionBox,_.anchorPointX=u.anchorPoint.x,_.anchorPointY=u.anchorPoint.y,_.x1=Math.min(M.x,k.x,A.x,T.x),_.y1=Math.min(M.y,k.x,A.x,T.x),_.x2=Math.max(M.x,k.x,A.x,T.x),_.y2=Math.max(M.y,k.x,A.x,T.x),_.maxScale=u.maxScale}else _=u;for(var E=0;E<this.edges.length;E++){var S=this.edges[E];if(o=this.getPlacementScale(o,u.anchorPoint,_,S.anchorPoint,S),o>=this.maxScale)return o}}}return o},n.prototype.queryRenderedSymbols=function(t,e,r,n,o){var a={},s=[],l=this.collisionBoxArray,u=this.rotationMatrix,c=new i(t,e)._matMult(u),h=this.tempCollisionBox;h.anchorX=c.x,h.anchorY=c.y,h.x1=0,h.y1=0,h.x2=r-t,h.y2=n-e,h.maxScale=o,o=h.maxScale;for(var f=[c.x+h.x1/o,c.y+h.y1/o*this.yStretch,c.x+h.x2/o,c.y+h.y2/o*this.yStretch],d=this.grid.query(f[0],f[1],f[2],f[3]),p=this.ignoredGrid.query(f[0],f[1],f[2],f[3]),v=0;v<p.length;v++)d.push(p[v]);for(var m=0;m<d.length;m++){var g=l.get(d[m]),y=g.sourceLayerIndex,b=g.featureIndex;if(void 0===a[y]&&(a[y]={}),!a[y][b]){var x=g.anchorPoint.matMult(u),_=this.getPlacementScale(this.minScale,c,h,x,g);_>=o&&(a[y][b]=!0,s.push(d[m]))}}return s},n.prototype.getPlacementScale=function(t,e,r,n,i){var o=e.x-n.x,a=e.y-n.y,s=(i.x1-r.x2)/o,l=(i.x2-r.x1)/o,u=(i.y1-r.y2)*this.yStretch/a,c=(i.y2-r.y1)*this.yStretch/a;(isNaN(s)||isNaN(l))&&(s=l=1),(isNaN(u)||isNaN(c))&&(u=c=1);var h=Math.min(Math.max(s,l),Math.max(u,c)),f=i.maxScale,d=r.maxScale;return h>f&&(h=f),h>d&&(h=d),h>t&&h>=i.placementScale&&(t=h),t},n.prototype.insertCollisionFeature=function(t,e,r){for(var n=r?this.ignoredGrid:this.grid,i=this.collisionBoxArray,o=t.boxStartIndex;o<t.boxEndIndex;o++){var a=i.get(o);a.placementScale=e,e<this.maxScale&&n.insert(o,a.bbox0,a.bbox1,a.bbox2,a.bbox3)}}},{"../data/bucket":247,"grid-index":373,"point-geometry":404}],309:[function(t,e,r){"use strict";function n(t,e,r,n,o,a,s,l,u){var c=n?.6*a*s:0,h=Math.max(n?n.right-n.left:0,o?o.right-o.left:0),f=0===t[0].x||t[0].x===u||0===t[0].y||t[0].y===u;e/4>e-h*s&&(e=h*s+e/4);var d=2*a,p=f?e/2*l%e:(h/2+d)*s*l%e;return i(t,p,e,c,r,h*s,f,!1,u)}function i(t,e,r,n,l,u,c,h,f){for(var d=u/2,p=0,v=0;v<t.length-1;v++)p+=t[v].dist(t[v+1]);for(var m=0,g=e-r,y=[],b=0;b<t.length-1;b++){for(var x=t[b],_=t[b+1],w=x.dist(_),M=_.angleTo(x);m+w>g+r;){g+=r;var k=(g-m)/w,A=o(x.x,_.x,k),T=o(x.y,_.y,k);if(A>=0&&f>A&&T>=0&&f>T&&g-d>=0&&p>=g+d){var E=new a(A,T,M,b)._round();n&&!s(t,E,u,n,l)||y.push(E)}}m+=w}return h||y.length||c||(y=i(t,m/2,r,n,l,u,c,!0,f)),y}var o=t("../util/interpolate"),a=t("../symbol/anchor"),s=t("./check_max_angle");e.exports=n},{"../symbol/anchor":303,"../util/interpolate":343,"./check_max_angle":304}],310:[function(t,e,r){"use strict";function n(t,e){this.width=t,this.height=e,this.bin=new i(t,e),this.index={},this.ids={},this.data=new Uint8Array(t*e)}var i=t("shelf-pack");e.exports=n,n.prototype.getGlyphs=function(){var t,e,r,n={};for(var i in this.ids)t=i.split("#"),e=t[0],r=t[1],n[e]||(n[e]=[]),n[e].push(r);return n},n.prototype.getRects=function(){var t,e,r,n={};for(var i in this.ids)t=i.split("#"),e=t[0],r=t[1],n[e]||(n[e]={}),n[e][r]=this.index[i];return n},n.prototype.addGlyph=function(t,e,r,n){if(!r)return null;var i=e+"#"+r.id;if(this.index[i])return this.ids[i].indexOf(t)<0&&this.ids[i].push(t),this.index[i];if(!r.bitmap)return null;var o=r.width+2*n,a=r.height+2*n,s=1,l=o+2*s,u=a+2*s;l+=4-l%4,u+=4-u%4;var c=this.bin.packOne(l,u);if(c||(this.resize(),c=this.bin.packOne(l,u)),!c)return console.warn("glyph bitmap overflow"),null;this.index[i]=c,this.ids[i]=[t];for(var h=this.data,f=r.bitmap,d=0;a>d;d++)for(var p=this.width*(c.y+d+s)+c.x+s,v=o*d,m=0;o>m;m++)h[p+m]=f[v+m];return this.dirty=!0,c},n.prototype.resize=function(){var t=this.width,e=this.height;if(!(t>512||e>512)){this.texture&&(this.gl&&this.gl.deleteTexture(this.texture),this.texture=null),this.width*=2,this.height*=2,this.bin.resize(this.width,this.height);for(var r,n,i=new ArrayBuffer(this.width*this.height),o=0;e>o;o++)r=new Uint8Array(this.data.buffer,e*o,t),n=new Uint8Array(i,e*o*2,t),n.set(r);this.data=new Uint8Array(i)}},n.prototype.bind=function(t){this.gl=t,this.texture?t.bindTexture(t.TEXTURE_2D,this.texture):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texImage2D(t.TEXTURE_2D,0,t.ALPHA,this.width,this.height,0,t.ALPHA,t.UNSIGNED_BYTE,null))},n.prototype.updateTexture=function(t){this.bind(t),this.dirty&&(t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width,this.height,t.ALPHA,t.UNSIGNED_BYTE,this.data),this.dirty=!1)}},{"shelf-pack":406}],311:[function(t,e,r){"use strict";function n(t){this.url=t&&a(t),this.atlases={},this.stacks={},this.loading={}}function i(t,e,r){var n=1;this.advance=t.advance,this.left=t.left-r-n,this.top=t.top+r+n,this.rect=e}function o(t,e,r,n){return n=n||"abc",r.replace("{s}",n[t.length%n.length]).replace("{fontstack}",t).replace("{range}",e)}var a=t("../util/mapbox").normalizeGlyphsURL,s=t("../util/ajax").getArrayBuffer,l=t("../util/glyphs"),u=t("../symbol/glyph_atlas"),c=t("pbf");e.exports=n,n.prototype.getSimpleGlyphs=function(t,e,r,n){void 0===this.stacks[t]&&(this.stacks[t]={}),void 0===this.atlases[t]&&(this.atlases[t]=new u(128,128));for(var o,a={},s=this.stacks[t],l=this.atlases[t],c=3,h={},f=0,d=0;d<e.length;d++){var p=e[d];if(o=Math.floor(p/256),s[o]){var v=s[o].glyphs[p],m=l.addGlyph(r,t,v,c);v&&(a[p]=new i(v,m,c))}else void 0===h[o]&&(h[o]=[],f++),h[o].push(p)}f||n(void 0,a,t);var g=function(e,o,s){if(!e)for(var u=this.stacks[t][o]=s.stacks[0],d=0;d<h[o].length;d++){var p=h[o][d],v=u.glyphs[p],m=l.addGlyph(r,t,v,c);v&&(a[p]=new i(v,m,c))}f--,f||n(void 0,a,t)}.bind(this);for(var y in h)this.loadRange(t,y,g)},n.prototype.loadRange=function(t,e,r){if(256*e>65535)return r("glyphs > 65535 not supported");void 0===this.loading[t]&&(this.loading[t]={});var n=this.loading[t];if(n[e])n[e].push(r);else{n[e]=[r];var i=256*e+"-"+(256*e+255),a=o(t,i,this.url);s(a,function(t,r){for(var i=!t&&new l(new c(new Uint8Array(r))),o=0;o<n[e].length;o++)n[e][o](t,e,i);delete n[e]})}},n.prototype.getGlyphAtlas=function(t){return this.atlases[t]}},{"../symbol/glyph_atlas":310,"../util/ajax":334,"../util/glyphs":342,"../util/mapbox":346,pbf:402}],312:[function(t,e,r){"use strict";e.exports=function(t,e,r){function n(n){c.push(t[n]),h.push(r[n]),f.push(e[n]),d++}function i(t,e,r){var n=u[t];return delete u[t],u[e]=n,h[n][0].pop(),h[n][0]=h[n][0].concat(r[0]),n}function o(t,e,r){var n=l[e];return delete l[e],l[t]=n,h[n][0].shift(),h[n][0]=r[0].concat(h[n][0]),n}function a(t,e,r){var n=r?e[0][e[0].length-1]:e[0][0];return t+":"+n.x+":"+n.y}var s,l={},u={},c=[],h=[],f=[],d=0;for(s=0;s<t.length;s++){var p=r[s],v=e[s];if(v){var m=a(v,p),g=a(v,p,!0);if(m in u&&g in l&&u[m]!==l[g]){var y=o(m,g,p),b=i(m,g,h[y]);delete l[m],delete u[g],u[a(v,h[b],!0)]=b,h[y]=null}else m in u?i(m,g,p):g in l?o(m,g,p):(n(s),l[m]=d-1,u[g]=d-1)}else n(s)}return{features:c,textFeatures:f,geometries:h}}},{}],313:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s,l){this.anchorPoint=t,this.tl=e,this.tr=r,this.bl=n,this.br=i,this.tex=o,this.angle=a,this.minScale=s,this.maxScale=l}function i(t,e,r,i,o,a){var u=e.image.rect,c=1,h=e.left-c,f=h+u.w/e.image.pixelRatio,d=e.top-c,p=d+u.h/e.image.pixelRatio,v=new s(h,d),m=new s(f,d),g=new s(f,p),y=new s(h,p),b=o["icon-rotate"]*Math.PI/180;if(a){var x=i[t.segment];if(t.y===x.y&&t.x===x.x&&t.segment+1<i.length){var _=i[t.segment+1];b+=Math.atan2(t.y-_.y,t.x-_.x)+Math.PI}else b+=Math.atan2(t.y-x.y,t.x-x.x)}if(b){var w=Math.sin(b),M=Math.cos(b),k=[M,-w,w,M];v=v.matMult(k),m=m.matMult(k),y=y.matMult(k),g=g.matMult(k)}return[new n(new s(t.x,t.y),v,m,y,g,e.image.rect,0,l,1/0)]}function o(t,e,r,i,o,u){for(var c=o["text-rotate"]*Math.PI/180,h=o["text-keep-upright"],f=e.positionedGlyphs,d=[],p=0;p<f.length;p++){var v=f[p],m=v.glyph,g=m.rect;if(g){var y,b=(v.x+m.advance/2)*r,x=l;u?(y=[],x=a(y,t,b,i,t.segment,!0),h&&(x=Math.min(x,a(y,t,b,i,t.segment,!1)))):y=[{anchorPoint:new s(t.x,t.y),offset:0,angle:0,maxScale:1/0,minScale:l}];for(var _=v.x+m.left,w=v.y-m.top,M=_+g.w,k=w+g.h,A=new s(_,w),T=new s(M,w),E=new s(_,k),S=new s(M,k),L=0;L<y.length;L++){var z=y[L],I=A,P=T,C=E,R=S,D=z.angle+c;if(D){var O=Math.sin(D),F=Math.cos(D),j=[F,-O,O,F];I=I.matMult(j),P=P.matMult(j),C=C.matMult(j),R=R.matMult(j)}var N=Math.max(z.minScale,x),B=(t.angle+c+z.offset+2*Math.PI)%(2*Math.PI);d.push(new n(z.anchorPoint,I,P,C,R,g,B,N,z.maxScale))}}}return d}function a(t,e,r,n,i,o){var a=!o;0>r&&(o=!o),o&&i++;var u=new s(e.x,e.y),c=n[i],h=1/0;r=Math.abs(r);for(var f=l;;){var d=u.dist(c),p=r/d,v=Math.atan2(c.y-u.y,c.x-u.x);if(o||(v+=Math.PI),a&&(v+=Math.PI),t.push({anchorPoint:u,offset:a?Math.PI:0,minScale:p,maxScale:h,angle:(v+2*Math.PI)%(2*Math.PI)}),f>=p)break;for(u=c;u.equals(c);)if(i+=o?1:-1,c=n[i],!c)return p;var m=c.sub(u)._unit();u=u.sub(m._mult(d)),h=p}return f}var s=t("point-geometry");e.exports={getIconQuads:i,getGlyphQuads:o};var l=.5},{"point-geometry":404}],314:[function(t,e,r){"use strict";function n(t,e,r){for(var n=[],o=0,a=t.length;a>o;o++){var s=i(t[o].properties,e["text-field"]);if(s){s=s.toString();var l=e["text-transform"];"uppercase"===l?s=s.toLocaleUpperCase():"lowercase"===l&&(s=s.toLocaleLowerCase());for(var u=0;u<s.length;u++)r[s.charCodeAt(u)]=!0;n[o]=s}else n[o]=null}return n}var i=t("../util/token");e.exports=n},{"../util/token":348}],315:[function(t,e,r){"use strict";function n(t,e,r,n){this.codePoint=t,this.x=e,this.y=r,this.glyph=n}function i(t,e,r,n,i,o){this.positionedGlyphs=t,this.text=e,this.top=r,this.bottom=n,this.left=i,this.right=o}function o(t,e,r,o,s,l,u,c,h){for(var f=[],d=new i(f,t,h[1],h[1],h[0],h[0]),p=-17,v=0,m=p,g=0;g<t.length;g++){var y=t.charCodeAt(g),b=e[y];b&&(f.push(new n(y,v,m,b)),v+=b.advance+c)}return f.length?(a(d,e,o,r,s,l,u,h),d):!1}function a(t,e,r,n,i,o,a,u){var c=null,d=0,p=0,v=0,m=0,g=t.positionedGlyphs;if(n)for(var y=0;y<g.length;y++){var b=g[y];if(b.x-=d,b.y+=r*v,b.x>n&&null!==c){var x=g[c+1].x;m=Math.max(x,m);for(var _=c+1;y>=_;_++)g[_].y+=r,g[_].x-=x;if(a){var w=c;h[g[c].codePoint]&&w--,s(g,e,p,w,a)}p=c+1,c=null,d+=x,v++}f[b.codePoint]&&(c=y)}var M=g[g.length-1],k=M.x+e[M.codePoint].advance;m=Math.max(m,k);var A=(v+1)*r;s(g,e,p,g.length-1,a),l(g,a,i,o,m,r,v,u),t.top+=-o*A,t.bottom=t.top+A,t.left+=-i*m,t.right=t.left+m}function s(t,e,r,n,i){for(var o=e[t[n].codePoint].advance,a=(t[n].x+o)*i,s=r;n>=s;s++)t[s].x-=a}function l(t,e,r,n,i,o,a,s){for(var l=(e-r)*i+s[0],u=(-n*(a+1)+.5)*o+s[1],c=0;c<t.length;c++)t[c].x+=l,t[c].y+=u}function u(t,e){if(!t||!t.rect)return null;var r=e["icon-offset"][0],n=e["icon-offset"][1],i=r-t.width/2,o=i+t.width,a=n-t.height/2,s=a+t.height;return new c(t,a,s,i,o)}function c(t,e,r,n,i){this.image=t,this.top=e,this.bottom=r,this.left=n,this.right=i}e.exports={shapeText:o,shapeIcon:u};var h={32:!0,8203:!0},f={32:!0,38:!0,43:!0,45:!0,47:!0,173:!0,183:!0,8203:!0,8208:!0,8211:!0}},{}],316:[function(t,e,r){"use strict";function n(t,e){this.width=t,this.height=e,this.bin=new a(t,e),this.images={},this.data=!1,this.texture=0,this.filter=0,this.pixelRatio=1,this.dirty=!0}function i(t,e,r,n,i,o,a,s,l,u,c){var h,f,d=n*e+r,p=s*o+a;if(c)for(p-=o,f=-1;u>=f;f++,d=((f+u)%u+n)*e+r,p+=o)for(h=-1;l>=h;h++)i[p+h]=t[d+(h+l)%l];else for(f=0;u>f;f++,d+=e,p+=o)for(h=0;l>h;h++)i[p+h]=t[d+h]}function o(t,e,r,n,i){this.rect=t,this.width=e,this.height=r,this.sdf=n,this.pixelRatio=i}var a=t("shelf-pack"),s=t("../util/browser");e.exports=n,n.prototype.allocateImage=function(t,e){t/=this.pixelRatio,e/=this.pixelRatio;var r=2,n=t+r+(4-(t+r)%4),i=e+r+(4-(e+r)%4),o=this.bin.packOne(n,i);return o?o:(console.warn("SpriteAtlas out of space."),null)},n.prototype.getImage=function(t,e){if(this.images[t])return this.images[t];if(!this.sprite)return null;var r=this.sprite.getSpritePosition(t);if(!r.width||!r.height)return null;var n=this.allocateImage(r.width,r.height);if(!n)return null;var i=new o(n,r.width/r.pixelRatio,r.height/r.pixelRatio,r.sdf,r.pixelRatio/this.pixelRatio);return this.images[t]=i,this.copy(n,r,e),i},n.prototype.getPosition=function(t,e){var r=this.getImage(t,e),n=r&&r.rect;if(!n)return null;var i=r.width*r.pixelRatio,o=r.height*r.pixelRatio,a=1;return{size:[r.width,r.height],tl:[(n.x+a)/this.width,(n.y+a)/this.height],br:[(n.x+a+i)/this.width,(n.y+a+o)/this.height]}},n.prototype.allocate=function(){if(!this.data){var t=Math.floor(this.width*this.pixelRatio),e=Math.floor(this.height*this.pixelRatio);this.data=new Uint32Array(t*e);for(var r=0;r<this.data.length;r++)this.data[r]=0}},n.prototype.copy=function(t,e,r){if(this.sprite.img.data){var n=new Uint32Array(this.sprite.img.data.buffer);this.allocate();var o=this.data,a=1;i(n,this.sprite.img.width,e.x,e.y,o,this.width*this.pixelRatio,(t.x+a)*this.pixelRatio,(t.y+a)*this.pixelRatio,e.width,e.height,r),this.dirty=!0}},n.prototype.setSprite=function(t){t&&(this.pixelRatio=s.devicePixelRatio>1?2:1,this.canvas&&(this.canvas.width=this.width*this.pixelRatio,this.canvas.height=this.height*this.pixelRatio)),this.sprite=t},n.prototype.addIcons=function(t,e){for(var r=0;r<t.length;r++)this.getImage(t[r]);e(null,this.images)},n.prototype.bind=function(t,e){var r=!1;this.texture?t.bindTexture(t.TEXTURE_2D,this.texture):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),r=!0);var n=e?t.LINEAR:t.NEAREST;n!==this.filter&&(t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,n),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,n),this.filter=n),this.dirty&&(this.allocate(),r?t.texImage2D(t.TEXTURE_2D,0,t.RGBA,this.width*this.pixelRatio,this.height*this.pixelRatio,0,t.RGBA,t.UNSIGNED_BYTE,new Uint8Array(this.data.buffer)):t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width*this.pixelRatio,this.height*this.pixelRatio,t.RGBA,t.UNSIGNED_BYTE,new Uint8Array(this.data.buffer)),this.dirty=!1)}},{"../util/browser":335,"shelf-pack":406}],317:[function(t,e,r){"use strict";var n=t("../util/util"),i=t("../util/interpolate"),o=t("../util/browser"),a=t("../geo/lng_lat"),s=t("../geo/lng_lat_bounds"),l=t("point-geometry"),u=e.exports=function(){};n.extend(u.prototype,{getCenter:function(){return this.transform.center},setCenter:function(t,e){return this.jumpTo({center:t},e),this},panBy:function(t,e,r){return this.panTo(this.transform.center,n.extend({offset:l.convert(t).mult(-1)},e),r),this},panTo:function(t,e,r){return this.easeTo(n.extend({center:t},e),r)},getZoom:function(){return this.transform.zoom},setZoom:function(t,e){return this.jumpTo({zoom:t},e),this},zoomTo:function(t,e,r){return this.easeTo(n.extend({zoom:t},e),r)},zoomIn:function(t,e){return this.zoomTo(this.getZoom()+1,t,e),this},zoomOut:function(t,e){return this.zoomTo(this.getZoom()-1,t,e),this},getBearing:function(){return this.transform.bearing},setBearing:function(t,e){return this.jumpTo({bearing:t},e),this},rotateTo:function(t,e,r){return this.easeTo(n.extend({bearing:t},e),r)},resetNorth:function(t,e){return this.rotateTo(0,n.extend({duration:1e3},t),e),this},snapToNorth:function(t,e){return Math.abs(this.getBearing())<this.options.bearingSnap?this.resetNorth(t,e):this},getPitch:function(){return this.transform.pitch},setPitch:function(t,e){return this.jumpTo({pitch:t},e),this},fitBounds:function(t,e,r){e=n.extend({padding:0,offset:[0,0],maxZoom:1/0},e),t=s.convert(t);var i=l.convert(e.offset),o=this.transform,a=o.project(t.getNorthWest()),u=o.project(t.getSouthEast()),c=u.sub(a),h=(o.width-2*e.padding-2*Math.abs(i.x))/c.x,f=(o.height-2*e.padding-2*Math.abs(i.y))/c.y;return e.center=o.unproject(a.add(u).div(2)),e.zoom=Math.min(o.scaleZoom(o.scale*Math.min(h,f)),e.maxZoom),e.bearing=0,e.linear?this.easeTo(e,r):this.flyTo(e,r)},jumpTo:function(t,e){this.stop();var r=this.transform,n=!1,i=!1,o=!1;return"zoom"in t&&r.zoom!==+t.zoom&&(n=!0,r.zoom=+t.zoom),"center"in t&&(r.center=a.convert(t.center)),"bearing"in t&&r.bearing!==+t.bearing&&(i=!0,r.bearing=+t.bearing),"pitch"in t&&r.pitch!==+t.pitch&&(o=!0,r.pitch=+t.pitch),this.fire("movestart",e).fire("move",e),n&&this.fire("zoomstart",e).fire("zoom",e).fire("zoomend",e),i&&this.fire("rotate",e),o&&this.fire("pitch",e),this.fire("moveend",e)},easeTo:function(t,e){this.stop(),t=n.extend({offset:[0,0],duration:500,easing:n.ease},t);var r,o,s=this.transform,u=l.convert(t.offset),c=this.getZoom(),h=this.getBearing(),f=this.getPitch(),d="zoom"in t?+t.zoom:c,p="bearing"in t?this._normalizeBearing(t.bearing,h):h,v="pitch"in t?+t.pitch:f;"center"in t?(r=a.convert(t.center),o=s.centerPoint.add(u)):"around"in t?(r=a.convert(t.around),o=s.locationPoint(r)):(o=s.centerPoint.add(u),r=s.pointLocation(o));var m=s.locationPoint(r);return t.animate===!1&&(t.duration=0),this.zooming=d!==c,this.rotating=h!==p,this.pitching=v!==f,t.noMoveStart||this.fire("movestart",e),this.zooming&&this.fire("zoomstart",e),clearTimeout(this._onEaseEnd),this._ease(function(t){this.zooming&&(s.zoom=i(c,d,t)),this.rotating&&(s.bearing=i(h,p,t)),this.pitching&&(s.pitch=i(f,v,t)),s.setLocationAtPoint(r,m.add(o.sub(m)._mult(t))),this.fire("move",e),this.zooming&&this.fire("zoom",e),this.rotating&&this.fire("rotate",e),this.pitching&&this.fire("pitch",e)},function(){t.delayEndEvents?this._onEaseEnd=setTimeout(this._easeToEnd.bind(this,e),t.delayEndEvents):this._easeToEnd(e)}.bind(this),t),this},_easeToEnd:function(t){this.zooming&&this.fire("zoomend",t),this.fire("moveend",t),this.zooming=!1,this.rotating=!1,this.pitching=!1},flyTo:function(t,e){function r(t){var e=(A*A-k*k+(t?-1:1)*L*L*T*T)/(2*(t?A:k)*L*T);return Math.log(Math.sqrt(e*e+1)-e)}function o(t){return(Math.exp(t)-Math.exp(-t))/2}function s(t){return(Math.exp(t)+Math.exp(-t))/2}function u(t){return o(t)/s(t)}this.stop(),t=n.extend({offset:[0,0],speed:1.2,curve:1.42,easing:n.ease},t);var c=this.transform,h=l.convert(t.offset),f=this.getZoom(),d=this.getBearing(),p=this.getPitch(),v="center"in t?a.convert(t.center):this.getCenter(),m="zoom"in t?+t.zoom:f,g="bearing"in t?this._normalizeBearing(t.bearing,d):d,y="pitch"in t?+t.pitch:p;Math.abs(c.center.lng)+Math.abs(v.lng)>180&&(c.center.lng>0&&v.lng<0?v.lng+=360:c.center.lng<0&&v.lng>0&&(v.lng-=360));var b=c.zoomScale(m-f),x=c.point,_="center"in t?c.project(v).sub(h.div(b)):x,w=c.worldSize,M=t.curve,k=Math.max(c.width,c.height),A=k/b,T=_.sub(x).mag();
+-if("minZoom"in t){var E=n.clamp(Math.min(t.minZoom,f,m),c.minZoom,c.maxZoom),S=k/c.zoomScale(E-f);M=Math.sqrt(S/T*2)}var L=M*M,z=r(0),I=function(t){return s(z)/s(z+M*t)},P=function(t){return k*((s(z)*u(z+M*t)-o(z))/L)/T},C=(r(1)-z)/M;if(Math.abs(T)<1e-6){if(Math.abs(k-A)<1e-6)return this.easeTo(t);var R=k>A?-1:1;C=Math.abs(Math.log(A/k))/M,P=function(){return 0},I=function(t){return Math.exp(R*M*t)}}if("duration"in t)t.duration=+t.duration;else{var D="screenSpeed"in t?+t.screenSpeed/M:+t.speed;t.duration=1e3*C/D}return this.zooming=!0,d!==g&&(this.rotating=!0),p!==y&&(this.pitching=!0),this.fire("movestart",e),this.fire("zoomstart",e),this._ease(function(t){var r=t*C,n=P(r);c.zoom=f+c.scaleZoom(1/I(r)),c.center=c.unproject(x.add(_.sub(x).mult(n)),w),this.rotating&&(c.bearing=i(d,g,t)),this.pitching&&(c.pitch=i(p,y,t)),this.fire("move",e),this.fire("zoom",e),this.rotating&&this.fire("rotate",e),this.pitching&&this.fire("pitch",e)},function(){this.fire("zoomend",e),this.fire("moveend",e),this.zooming=!1,this.rotating=!1,this.pitching=!1},t),this},isEasing:function(){return!!this._abortFn},stop:function(){return this._abortFn&&(this._abortFn(),this._finishEase()),this},_ease:function(t,e,r){this._finishFn=e,this._abortFn=o.timed(function(e){t.call(this,r.easing(e)),1===e&&this._finishEase()},r.animate===!1?0:r.duration,this)},_finishEase:function(){delete this._abortFn;var t=this._finishFn;delete this._finishFn,t.call(this)},_normalizeBearing:function(t,e){t=n.wrap(t,-180,180);var r=Math.abs(t-e);return Math.abs(t-360-e)<r&&(t-=360),Math.abs(t+360-e)<r&&(t+=360),t},_updateEasing:function(t,e,r){var i;if(this.ease){var o=this.ease,a=(Date.now()-o.start)/o.duration,s=o.easing(a+.01)-o.easing(a),l=.27/Math.sqrt(s*s+1e-4)*.01,u=Math.sqrt(.0729-l*l);i=n.bezier(l,u,.25,1)}else i=r?n.bezier.apply(n,r):n.ease;return this.ease={start:(new Date).getTime(),to:Math.pow(2,e),duration:t,easing:i},i}})},{"../geo/lng_lat":256,"../geo/lng_lat_bounds":257,"../util/browser":335,"../util/interpolate":343,"../util/util":349,"point-geometry":404}],318:[function(t,e,r){"use strict";function n(t){a.setOptions(this,t)}var i=t("./control"),o=t("../../util/dom"),a=t("../../util/util");e.exports=n,n.createAttributionString=function(t){var e=[];for(var r in t){var n=t[r];n.attribution&&e.indexOf(n.attribution)<0&&e.push(n.attribution)}return e.sort(function(t,e){return t.length-e.length}),e=e.filter(function(t,r){for(var n=r+1;n<e.length;n++)if(e[n].indexOf(t)>=0)return!1;return!0}),e.join(" | ")},n.prototype=a.inherit(i,{options:{position:"bottom-right"},onAdd:function(t){var e="mapboxgl-ctrl-attrib",r=this._container=o.create("div",e,t.getContainer());return this._update(),t.on("source.load",this._update.bind(this)),t.on("source.change",this._update.bind(this)),t.on("source.remove",this._update.bind(this)),t.on("moveend",this._updateEditLink.bind(this)),r},_update:function(){this._map.style&&(this._container.innerHTML=n.createAttributionString(this._map.style.sources)),this._editLink=this._container.getElementsByClassName("mapbox-improve-map")[0],this._updateEditLink()},_updateEditLink:function(){if(this._editLink){var t=this._map.getCenter();this._editLink.href="https://www.mapbox.com/map-feedback/#/"+t.lng+"/"+t.lat+"/"+Math.round(this._map.getZoom()+1)}}})},{"../../util/dom":338,"../../util/util":349,"./control":319}],319:[function(t,e,r){"use strict";function n(){}e.exports=n,n.prototype={addTo:function(t){this._map=t;var e=this._container=this.onAdd(t);if(this.options&&this.options.position){var r=this.options.position,n=t._controlCorners[r];e.className+=" mapboxgl-ctrl",-1!==r.indexOf("bottom")?n.insertBefore(e,n.firstChild):n.appendChild(e)}return this},remove:function(){return this._container.parentNode.removeChild(this._container),this.onRemove&&this.onRemove(this._map),this._map=null,this}}},{}],320:[function(t,e,r){"use strict";function n(t){s.setOptions(this,t)}var i=t("./control"),o=t("../../util/browser"),a=t("../../util/dom"),s=t("../../util/util");e.exports=n;var l={enableHighAccuracy:!1,timeout:6e3};n.prototype=s.inherit(i,{options:{position:"top-right"},onAdd:function(t){var e="mapboxgl-ctrl",r=this._container=a.create("div",e+"-group",t.getContainer());return o.supportsGeolocation?(this._container.addEventListener("contextmenu",this._onContextMenu.bind(this)),this._geolocateButton=a.create("button",e+"-icon "+e+"-geolocate",this._container),this._geolocateButton.addEventListener("click",this._onClickGeolocate.bind(this)),r):r},_onContextMenu:function(t){t.preventDefault()},_onClickGeolocate:function(){navigator.geolocation.getCurrentPosition(this._success.bind(this),this._error.bind(this),l),this._timeoutId=setTimeout(this._finish.bind(this),1e4)},_success:function(t){this._map.jumpTo({center:[t.coords.longitude,t.coords.latitude],zoom:17,bearing:0,pitch:0}),this._finish()},_error:function(){this._finish()},_finish:function(){this._timeoutId&&clearTimeout(this._timeoutId),this._timeoutId=void 0}})},{"../../util/browser":335,"../../util/dom":338,"../../util/util":349,"./control":319}],321:[function(t,e,r){"use strict";function n(t){s.setOptions(this,t)}function i(t){return new MouseEvent(t.type,{button:2,buttons:2,bubbles:!0,cancelable:!0,detail:t.detail,view:t.view,screenX:t.screenX,screenY:t.screenY,clientX:t.clientX,clientY:t.clientY,movementX:t.movementX,movementY:t.movementY,ctrlKey:t.ctrlKey,shiftKey:t.shiftKey,altKey:t.altKey,metaKey:t.metaKey})}var o=t("./control"),a=t("../../util/dom"),s=t("../../util/util");e.exports=n,n.prototype=s.inherit(o,{options:{position:"top-right"},onAdd:function(t){var e="mapboxgl-ctrl",r=this._container=a.create("div",e+"-group",t.getContainer());return this._container.addEventListener("contextmenu",this._onContextMenu.bind(this)),this._zoomInButton=this._createButton(e+"-icon "+e+"-zoom-in",t.zoomIn.bind(t)),this._zoomOutButton=this._createButton(e+"-icon "+e+"-zoom-out",t.zoomOut.bind(t)),this._compass=this._createButton(e+"-icon "+e+"-compass",t.resetNorth.bind(t)),this._compassArrow=a.create("div","arrow",this._compass),this._compass.addEventListener("mousedown",this._onCompassDown.bind(this)),this._onCompassMove=this._onCompassMove.bind(this),this._onCompassUp=this._onCompassUp.bind(this),t.on("rotate",this._rotateCompassArrow.bind(this)),this._rotateCompassArrow(),this._el=t.getCanvasContainer(),r},_onContextMenu:function(t){t.preventDefault()},_onCompassDown:function(t){0===t.button&&(a.disableDrag(),document.addEventListener("mousemove",this._onCompassMove),document.addEventListener("mouseup",this._onCompassUp),this._el.dispatchEvent(i(t)),t.stopPropagation())},_onCompassMove:function(t){0===t.button&&(this._el.dispatchEvent(i(t)),t.stopPropagation())},_onCompassUp:function(t){0===t.button&&(document.removeEventListener("mousemove",this._onCompassMove),document.removeEventListener("mouseup",this._onCompassUp),a.enableDrag(),this._el.dispatchEvent(i(t)),t.stopPropagation())},_createButton:function(t,e){var r=a.create("button",t,this._container);return r.addEventListener("click",function(){e()}),r},_rotateCompassArrow:function(){var t="rotate("+this._map.transform.angle*(180/Math.PI)+"deg)";this._compassArrow.style.transform=t}})},{"../../util/dom":338,"../../util/util":349,"./control":319}],322:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),this._container=t.getContainer(),a.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../geo/lng_lat_bounds"),a=t("../../util/util");e.exports=n,n.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onMouseDown,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onMouseDown),this._enabled=!1)},_onMouseDown:function(t){t.shiftKey&&0===t.button&&(document.addEventListener("mousemove",this._onMouseMove,!1),document.addEventListener("keydown",this._onKeyDown,!1),document.addEventListener("mouseup",this._onMouseUp,!1),i.disableDrag(),this._startPos=i.mousePos(this._el,t),this._active=!0)},_onMouseMove:function(t){var e=this._startPos,r=i.mousePos(this._el,t);this._box||(this._box=i.create("div","mapboxgl-boxzoom",this._container),this._container.classList.add("mapboxgl-crosshair"),this._fireEvent("boxzoomstart",t));var n=Math.min(e.x,r.x),o=Math.max(e.x,r.x),a=Math.min(e.y,r.y),s=Math.max(e.y,r.y);i.setTransform(this._box,"translate("+n+"px,"+a+"px)"),this._box.style.width=o-n+"px",this._box.style.height=s-a+"px"},_onMouseUp:function(t){if(0===t.button){var e=this._startPos,r=i.mousePos(this._el,t),n=new o(this._map.unproject(e),this._map.unproject(r));this._finish(),e.x===r.x&&e.y===r.y?this._fireEvent("boxzoomcancel",t):this._map.fitBounds(n,{linear:!0}).fire("boxzoomend",{originalEvent:t,boxZoomBounds:n})}},_onKeyDown:function(t){27===t.keyCode&&(this._finish(),this._fireEvent("boxzoomcancel",t))},_finish:function(){this._active=!1,document.removeEventListener("mousemove",this._onMouseMove,!1),document.removeEventListener("keydown",this._onKeyDown,!1),document.removeEventListener("mouseup",this._onMouseUp,!1),this._container.classList.remove("mapboxgl-crosshair"),this._box&&(this._box.parentNode.removeChild(this._box),this._box=null),i.enableDrag()},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})}}},{"../../geo/lng_lat_bounds":257,"../../util/dom":338,"../../util/util":349}],323:[function(t,e,r){"use strict";function n(t){this._map=t,this._onDblClick=this._onDblClick.bind(this)}e.exports=n,n.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._map.on("dblclick",this._onDblClick),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._map.off("dblclick",this._onDblClick),this._enabled=!1)},_onDblClick:function(t){this._map.zoomTo(this._map.getZoom()+(t.originalEvent.shiftKey?-1:1),{around:t.lngLat})}}},{}],324:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),o.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../util/util");e.exports=n;var a=.3,s=o.bezier(0,0,a,1),l=1400,u=2500;n.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onDown),this._el.addEventListener("touchstart",this._onDown),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onDown),this._el.removeEventListener("touchstart",this._onDown),this._enabled=!1)},_onDown:function(t){this._ignoreEvent(t)||this.isActive()||(t.touches?(document.addEventListener("touchmove",this._onMove),document.addEventListener("touchend",this._onTouchEnd)):(document.addEventListener("mousemove",this._onMove),document.addEventListener("mouseup",this._onMouseUp)),this._active=!1,this._startPos=this._pos=i.mousePos(this._el,t),this._inertia=[[Date.now(),this._pos]])},_onMove:function(t){if(!this._ignoreEvent(t)){this.isActive()||(this._active=!0,this._fireEvent("dragstart",t),this._fireEvent("movestart",t));var e=i.mousePos(this._el,t),r=this._map;r.stop(),this._drainInertiaBuffer(),this._inertia.push([Date.now(),e]),r.transform.setLocationAtPoint(r.transform.pointLocation(this._pos),e),this._fireEvent("drag",t),this._fireEvent("move",t),this._pos=e,t.preventDefault()}},_onUp:function(t){if(this.isActive()){this._active=!1,this._fireEvent("dragend",t),this._drainInertiaBuffer();var e=function(){this._fireEvent("moveend",t)}.bind(this),r=this._inertia;if(r.length<2)return void e();var n=r[r.length-1],i=r[0],o=n[1].sub(i[1]),c=(n[0]-i[0])/1e3;if(0===c||n[1].equals(i[1]))return void e();var h=o.mult(a/c),f=h.mag();f>l&&(f=l,h._unit()._mult(f));var d=f/(u*a),p=h.mult(-d/2);this._map.panBy(p,{duration:1e3*d,easing:s,noMoveStart:!0},{originalEvent:t})}},_onMouseUp:function(t){this._ignoreEvent(t)||(this._onUp(t),document.removeEventListener("mousemove",this._onMove),document.removeEventListener("mouseup",this._onMouseUp))},_onTouchEnd:function(t){this._ignoreEvent(t)||(this._onUp(t),document.removeEventListener("touchmove",this._onMove),document.removeEventListener("touchend",this._onTouchEnd))},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})},_ignoreEvent:function(t){var e=this._map;if(e.boxZoom&&e.boxZoom.isActive())return!0;if(e.dragRotate&&e.dragRotate.isActive())return!0;if(t.touches)return t.touches.length>1;if(t.ctrlKey)return!0;var r=1,n=0;return"mousemove"===t.type?t.buttons&0===r:t.button!==n},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),r=160;t.length>0&&e-t[0][0]>r;)t.shift()}}},{"../../util/dom":338,"../../util/util":349}],325:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),a.bindHandlers(this)}var i=t("../../util/dom"),o=t("point-geometry"),a=t("../../util/util");e.exports=n;var s=.25,l=a.bezier(0,0,s,1),u=180,c=720;n.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onDown),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onDown),this._enabled=!1)},_onDown:function(t){if(!this._ignoreEvent(t)&&!this.isActive()){document.addEventListener("mousemove",this._onMove),document.addEventListener("mouseup",this._onUp),this._active=!1,this._inertia=[[Date.now(),this._map.getBearing()]],this._startPos=this._pos=i.mousePos(this._el,t),this._center=this._map.transform.centerPoint;var e=this._startPos.sub(this._center),r=e.mag();200>r&&(this._center=this._startPos.add(new o(-200,0)._rotate(e.angle()))),t.preventDefault()}},_onMove:function(t){if(!this._ignoreEvent(t)){this.isActive()||(this._active=!0,this._fireEvent("rotatestart",t),this._fireEvent("movestart",t));var e=this._map;e.stop();var r=this._pos,n=i.mousePos(this._el,t),o=this._center,a=r.sub(o).angleWith(n.sub(o))/Math.PI*180,s=e.getBearing()-a,l=this._inertia,u=l[l.length-1];this._drainInertiaBuffer(),l.push([Date.now(),e._normalizeBearing(s,u[1])]),e.transform.bearing=s,this._fireEvent("rotate",t),this._fireEvent("move",t),this._pos=n}},_onUp:function(t){if(!this._ignoreEvent(t)&&(document.removeEventListener("mousemove",this._onMove),document.removeEventListener("mouseup",this._onUp),this.isActive())){this._active=!1,this._fireEvent("rotateend",t),this._drainInertiaBuffer();var e=this._map,r=e.getBearing(),n=this._inertia,i=function(){Math.abs(r)<e.options.bearingSnap?e.resetNorth({noMoveStart:!0},{originalEvent:t}):this._fireEvent("moveend",t)}.bind(this);if(n.length<2)return void i();var o=n[0],a=n[n.length-1],h=n[n.length-2],f=e._normalizeBearing(r,h[1]),d=a[1]-o[1],p=0>d?-1:1,v=(a[0]-o[0])/1e3;if(0===d||0===v)return void i();var m=Math.abs(d*(s/v));m>u&&(m=u);var g=m/(c*s),y=p*m*(g/2);f+=y,Math.abs(e._normalizeBearing(f,0))<e.options.bearingSnap&&(f=e._normalizeBearing(0,f)),e.rotateTo(f,{duration:1e3*g,easing:l,noMoveStart:!0},{originalEvent:t})}},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})},_ignoreEvent:function(t){var e=this._map;if(e.boxZoom&&e.boxZoom.isActive())return!0;if(e.dragPan&&e.dragPan.isActive())return!0;if(t.touches)return t.touches.length>1;var r=t.ctrlKey?1:2,n=t.ctrlKey?0:2;return"mousemove"===t.type?t.buttons&0===r:t.button!==n},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),r=160;t.length>0&&e-t[0][0]>r;)t.shift()}}},{"../../util/dom":338,"../../util/util":349,"point-geometry":404}],326:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),this._onKeyDown=this._onKeyDown.bind(this)}e.exports=n;var i=80,o=2,a=5;n.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("keydown",this._onKeyDown,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("keydown",this._onKeyDown),this._enabled=!1)},_onKeyDown:function(t){if(!(t.altKey||t.ctrlKey||t.metaKey)){var e=this._map,r={originalEvent:t};switch(t.keyCode){case 61:case 107:case 171:case 187:e.zoomTo(Math.round(e.getZoom())+(t.shiftKey?2:1),r);break;case 189:case 109:case 173:e.zoomTo(Math.round(e.getZoom())-(t.shiftKey?2:1),r);break;case 37:t.shiftKey?e.easeTo({bearing:e.getBearing()-o},r):(t.preventDefault(),e.panBy([-i,0],r));break;case 39:t.shiftKey?e.easeTo({bearing:e.getBearing()+o},r):(t.preventDefault(),e.panBy([i,0],r));break;case 38:t.shiftKey?e.easeTo({pitch:e.getPitch()+a},r):(t.preventDefault(),e.panBy([0,-i],r));break;case 40:t.shiftKey?e.easeTo({pitch:Math.max(e.getPitch()-a,0)},r):(t.preventDefault(),e.panBy([0,i],r))}}}}},{}],327:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),a.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../util/browser"),a=t("../../util/util");e.exports=n;var s="undefined"!=typeof navigator?navigator.userAgent.toLowerCase():"",l=-1!==s.indexOf("firefox"),u=-1!==s.indexOf("safari")&&-1===s.indexOf("chrom");n.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("wheel",this._onWheel,!1),this._el.addEventListener("mousewheel",this._onWheel,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("wheel",this._onWheel),this._el.removeEventListener("mousewheel",this._onWheel),this._enabled=!1)},_onWheel:function(t){var e;"wheel"===t.type?(e=t.deltaY,l&&t.deltaMode===window.WheelEvent.DOM_DELTA_PIXEL&&(e/=o.devicePixelRatio),t.deltaMode===window.WheelEvent.DOM_DELTA_LINE&&(e*=40)):"mousewheel"===t.type&&(e=-t.wheelDeltaY,u&&(e/=3));var r=o.now(),n=r-(this._time||0);this._pos=i.mousePos(this._el,t),this._time=r,0!==e&&e%4.000244140625===0?(this._type="wheel",e=Math.floor(e/4)):0!==e&&Math.abs(e)<4?this._type="trackpad":n>400?(this._type=null,this._lastValue=e,this._timeout=setTimeout(this._onTimeout,40)):this._type||(this._type=Math.abs(n*e)<200?"trackpad":"wheel",this._timeout&&(clearTimeout(this._timeout),this._timeout=null,e+=this._lastValue)),t.shiftKey&&e&&(e/=4),this._type&&this._zoom(-e,t),t.preventDefault()},_onTimeout:function(){this._type="wheel",this._zoom(-this._lastValue)},_zoom:function(t,e){if(0!==t){var r=this._map,n=2/(1+Math.exp(-Math.abs(t/100)));0>t&&0!==n&&(n=1/n);var i=r.ease?r.ease.to:r.transform.scale,o=r.transform.scaleZoom(i*n);r.zoomTo(o,{duration:0,around:r.unproject(this._pos),delayEndEvents:200},{originalEvent:e})}}}},{"../../util/browser":335,"../../util/dom":338,"../../util/util":349}],328:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),o.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../util/util");e.exports=n;var a=.15,s=o.bezier(0,0,a,1),l=12,u=2.5,c=.15,h=4;n.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("touchstart",this._onStart,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("touchstart",this._onStart),this._enabled=!1)},disableRotation:function(){this._rotationDisabled=!0},enableRotation:function(){this._rotationDisabled=!1},_onStart:function(t){if(2===t.touches.length){var e=i.mousePos(this._el,t.touches[0]),r=i.mousePos(this._el,t.touches[1]);this._startVec=e.sub(r),this._startScale=this._map.transform.scale,this._startBearing=this._map.transform.bearing,this._gestureIntent=void 0,this._inertia=[],document.addEventListener("touchmove",this._onMove,!1),document.addEventListener("touchend",this._onEnd,!1)}},_onMove:function(t){if(2===t.touches.length){var e=i.mousePos(this._el,t.touches[0]),r=i.mousePos(this._el,t.touches[1]),n=e.add(r).div(2),o=e.sub(r),a=o.mag()/this._startVec.mag(),s=this._rotationDisabled?0:180*o.angleWith(this._startVec)/Math.PI,l=this._map;if(this._gestureIntent){var u={duration:0,around:l.unproject(n)};"rotate"===this._gestureIntent&&(u.bearing=this._startBearing+s),"zoom"!==this._gestureIntent&&"rotate"!==this._gestureIntent||(u.zoom=l.transform.scaleZoom(this._startScale*a)),l.stop(),this._drainInertiaBuffer(),this._inertia.push([Date.now(),a,n]),l.easeTo(u,{originalEvent:t})}else{var f=Math.abs(1-a)>c,d=Math.abs(s)>h;d?this._gestureIntent="rotate":f&&(this._gestureIntent="zoom"),this._gestureIntent&&(this._startVec=o,this._startScale=l.transform.scale,this._startBearing=l.transform.bearing)}t.preventDefault()}},_onEnd:function(t){document.removeEventListener("touchmove",this._onMove),document.removeEventListener("touchend",this._onEnd),this._drainInertiaBuffer();var e=this._inertia,r=this._map;if(e.length<2)return void r.snapToNorth({},{originalEvent:t});var n=e[e.length-1],i=e[0],o=r.transform.scaleZoom(this._startScale*n[1]),c=r.transform.scaleZoom(this._startScale*i[1]),h=o-c,f=(n[0]-i[0])/1e3,d=n[2];if(0===f||o===c)return void r.snapToNorth({},{originalEvent:t});var p=h*a/f;Math.abs(p)>u&&(p=p>0?u:-u);var v=1e3*Math.abs(p/(l*a)),m=o+p*v/2e3;0>m&&(m=0),r.easeTo({zoom:m,duration:v,easing:s,around:r.unproject(d)},{originalEvent:t})},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),r=160;t.length>2&&e-t[0][0]>r;)t.shift()}}},{"../../util/dom":338,"../../util/util":349}],329:[function(t,e,r){"use strict";function n(){i.bindAll(["_onHashChange","_updateHash"],this)}e.exports=n;var i=t("../util/util");n.prototype={addTo:function(t){return this._map=t,window.addEventListener("hashchange",this._onHashChange,!1),this._map.on("moveend",this._updateHash),this},remove:function(){return window.removeEventListener("hashchange",this._onHashChange,!1),this._map.off("moveend",this._updateHash),delete this._map,this},_onHashChange:function(){var t=location.hash.replace("#","").split("/");return t.length>=3?(this._map.jumpTo({center:[+t[2],+t[1]],zoom:+t[0],bearing:+(t[3]||0)}),!0):!1},_updateHash:function(){var t=this._map.getCenter(),e=this._map.getZoom(),r=this._map.getBearing(),n=Math.max(0,Math.ceil(Math.log(e)/Math.LN2)),i="#"+Math.round(100*e)/100+"/"+t.lat.toFixed(n)+"/"+t.lng.toFixed(n)+(r?"/"+Math.round(10*r)/10:"");window.history.replaceState("","",i)}}},{"../util/util":349}],330:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer();for(var e in i)t[e]=new i[e](t);a.bindHandlers(this)}var i={scrollZoom:t("./handler/scroll_zoom"),boxZoom:t("./handler/box_zoom"),dragRotate:t("./handler/drag_rotate"),dragPan:t("./handler/drag_pan"),keyboard:t("./handler/keyboard"),doubleClickZoom:t("./handler/dblclick_zoom"),touchZoomRotate:t("./handler/touch_zoom_rotate")},o=t("../util/dom"),a=t("../util/util"),s=t("point-geometry");e.exports=n,n.prototype={enable:function(){var t=this._map.options,e=this._el;for(var r in i)t[r]&&this._map[r].enable();e.addEventListener("mousedown",this._onMouseDown,!1),e.addEventListener("mouseup",this._onMouseUp,!1),e.addEventListener("mousemove",this._onMouseMove,!1),e.addEventListener("touchstart",this._onTouchStart,!1),e.addEventListener("touchend",this._onTouchEnd,!1),e.addEventListener("touchmove",this._onTouchMove,!1),e.addEventListener("touchcancel",this._onTouchCancel,!1),e.addEventListener("click",this._onClick,!1),e.addEventListener("dblclick",this._onDblClick,!1),e.addEventListener("contextmenu",this._onContextMenu,!1)},disable:function(){var t=this._map.options,e=this._el;for(var r in i)t[r]&&this._map[r].disable();e.removeEventListener("mousedown",this._onMouseDown),e.removeEventListener("mouseup",this._onMouseUp),e.removeEventListener("mousemove",this._onMouseMove),e.removeEventListener("touchstart",this._onTouchStart),e.removeEventListener("touchend",this._onTouchEnd),e.removeEventListener("touchmove",this._onTouchMove),e.removeEventListener("touchcancel",this._onTouchCancel),e.removeEventListener("click",this._onClick),e.removeEventListener("dblclick",this._onDblClick),e.removeEventListener("contextmenu",this._onContextMenu)},_onMouseDown:function(t){this._map.stop(),this._startPos=o.mousePos(this._el,t),this._fireMouseEvent("mousedown",t)},_onMouseUp:function(t){var e=this._map,r=e.dragRotate&&e.dragRotate.isActive();this._contextMenuEvent&&!r&&this._fireMouseEvent("contextmenu",this._contextMenuEvent),this._contextMenuEvent=null,this._fireMouseEvent("mouseup",t)},_onMouseMove:function(t){var e=this._map,r=this._el;if(!(e.dragPan&&e.dragPan.isActive()||e.dragRotate&&e.dragRotate.isActive())){for(var n=t.toElement||t.target;n&&n!==r;)n=n.parentNode;n===r&&this._fireMouseEvent("mousemove",t)}},_onTouchStart:function(t){this._map.stop(),this._fireTouchEvent("touchstart",t),!t.touches||t.touches.length>1||(this._tapped?(clearTimeout(this._tapped),this._tapped=null,this._fireMouseEvent("dblclick",t)):this._tapped=setTimeout(this._onTouchTimeout,300))},_onTouchMove:function(t){this._fireTouchEvent("touchmove",t)},_onTouchEnd:function(t){this._fireTouchEvent("touchend",t)},_onTouchCancel:function(t){this._fireTouchEvent("touchcancel",t)},_onTouchTimeout:function(){this._tapped=null},_onClick:function(t){var e=o.mousePos(this._el,t);e.equals(this._startPos)&&this._fireMouseEvent("click",t)},_onDblClick:function(t){this._fireMouseEvent("dblclick",t),t.preventDefault()},_onContextMenu:function(t){this._contextMenuEvent=t,t.preventDefault()},_fireMouseEvent:function(t,e){var r=o.mousePos(this._el,e);return this._map.fire(t,{lngLat:this._map.unproject(r),point:r,originalEvent:e})},_fireTouchEvent:function(t,e){var r=o.touchPos(this._el,e),n=r.reduce(function(t,e,r,n){return t.add(e.div(n.length))},new s(0,0));return this._map.fire(t,{lngLat:this._map.unproject(n),point:n,lngLats:r.map(function(t){return this._map.unproject(t)},this),points:r,originalEvent:e})}}},{"../util/dom":338,"../util/util":349,"./handler/box_zoom":322,"./handler/dblclick_zoom":323,"./handler/drag_pan":324,"./handler/drag_rotate":325,"./handler/keyboard":326,"./handler/scroll_zoom":327,"./handler/touch_zoom_rotate":328,"point-geometry":404}],331:[function(t,e,r){"use strict";function n(t){t.parentNode&&t.parentNode.removeChild(t)}var i=t("../util/canvas"),o=t("../util/util"),a=t("../util/browser"),s=t("../util/evented"),l=t("../util/dom"),u=t("../style/style"),c=t("../style/animation_loop"),h=t("../render/painter"),f=t("../geo/transform"),d=t("./hash"),p=t("./interaction"),v=t("./camera"),m=t("../geo/lng_lat"),g=t("../geo/lng_lat_bounds"),y=t("point-geometry"),b=t("./control/attribution"),x=0,_=20,w=e.exports=function(t){t=o.inherit(this.options,t),this._interactive=t.interactive,this._failIfMajorPerformanceCaveat=t.failIfMajorPerformanceCaveat,this._preserveDrawingBuffer=t.preserveDrawingBuffer,"string"==typeof t.container?this._container=document.getElementById(t.container):this._container=t.container,this.animationLoop=new c,this.transform=new f(t.minZoom,t.maxZoom),t.maxBounds&&this.setMaxBounds(t.maxBounds),o.bindAll(["_forwardStyleEvent","_forwardSourceEvent","_forwardLayerEvent","_forwardTileEvent","_onStyleLoad","_onStyleChange","_onSourceAdd","_onSourceRemove","_onSourceUpdate","_onWindowResize","onError","_update","_render"],this),this._setupContainer(),this._setupPainter(),this.on("move",this._update.bind(this,!1)),this.on("zoom",this._update.bind(this,!0)),this.on("moveend",function(){this.animationLoop.set(300),this._rerender()}.bind(this)),"undefined"!=typeof window&&window.addEventListener("resize",this._onWindowResize,!1),this.interaction=new p(this),t.interactive&&this.interaction.enable(),this._hash=t.hash&&(new d).addTo(this),this._hash&&this._hash._onHashChange()||this.jumpTo(t),this.stacks={},this._classes=[],this.resize(),t.classes&&this.setClasses(t.classes),t.style&&this.setStyle(t.style),t.attributionControl&&this.addControl(new b(t.attributionControl)),this.on("style.error",this.onError),this.on("source.error",this.onError),this.on("tile.error",this.onError),this.on("layer.error",this.onError)};o.extend(w.prototype,s),o.extend(w.prototype,v.prototype),o.extend(w.prototype,{options:{center:[0,0],zoom:0,bearing:0,pitch:0,minZoom:x,maxZoom:_,interactive:!0,scrollZoom:!0,boxZoom:!0,dragRotate:!0,dragPan:!0,keyboard:!0,doubleClickZoom:!0,touchZoomRotate:!0,bearingSnap:7,hash:!1,attributionControl:!0,failIfMajorPerformanceCaveat:!1,preserveDrawingBuffer:!1},addControl:function(t){return t.addTo(this),this},addClass:function(t,e){return this._classes.indexOf(t)>=0||""===t?this:(this._classes.push(t),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0))},removeClass:function(t,e){var r=this._classes.indexOf(t);return 0>r||""===t?this:(this._classes.splice(r,1),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0))},setClasses:function(t,e){for(var r={},n=0;n<t.length;n++)""!==t[n]&&(r[t[n]]=!0);return this._classes=Object.keys(r),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0)},hasClass:function(t){return this._classes.indexOf(t)>=0},getClasses:function(){return this._classes},resize:function(){var t=0,e=0;return this._container&&(t=this._container.offsetWidth||400,e=this._container.offsetHeight||300),this._canvas.resize(t,e),this.transform.resize(t,e),this.painter.resize(t,e),this.fire("movestart").fire("move").fire("resize").fire("moveend")},getBounds:function(){var t=new g(this.transform.pointLocation(new y(0,0)),this.transform.pointLocation(this.transform.size));return(this.transform.angle||this.transform.pitch)&&(t.extend(this.transform.pointLocation(new y(this.transform.size.x,0))),t.extend(this.transform.pointLocation(new y(0,this.transform.size.y)))),t},setMaxBounds:function(t){if(t){var e=g.convert(t);this.transform.lngRange=[e.getWest(),e.getEast()],this.transform.latRange=[e.getSouth(),e.getNorth()],this.transform._constrain(),this._update()}else null!==t&&void 0!==t||(this.transform.lngRange=[],this.transform.latRange=[],this._update());return this},setMinZoom:function(t){if(t=null===t||void 0===t?x:t,t>=x&&t<=this.transform.maxZoom)return this.transform.minZoom=t,this._update(),this.getZoom()<t&&this.setZoom(t),this;throw new Error("minZoom must be between "+x+" and the current maxZoom, inclusive")},setMaxZoom:function(t){if(t=null===t||void 0===t?_:t,t>=this.transform.minZoom&&_>=t)return this.transform.maxZoom=t,this._update(),this.getZoom()>t&&this.setZoom(t),this;throw new Error("maxZoom must be between the current minZoom and "+_+", inclusive")},project:function(t){return this.transform.locationPoint(m.convert(t))},unproject:function(t){return this.transform.pointLocation(y.convert(t))},queryRenderedFeatures:function(t,e){t instanceof y||Array.isArray(t)||(e=t,t=void 0);var r=this._makeQueryGeometry(t);return this.style.queryRenderedFeatures(r,e,this.transform.zoom,this.transform.angle)},_makeQueryGeometry:function(t){void 0===t&&(t=[y.convert([0,0]),y.convert([this.transform.width,this.transform.height])]);var e,r=t instanceof y||"number"==typeof t[0];if(r){var n=y.convert(t);e=[n]}else{var i=[y.convert(t[0]),y.convert(t[1])];e=[i[0],new y(i[1].x,i[0].y),i[1],new y(i[0].x,i[1].y),i[0]]}return e=e.map(function(t){return this.transform.pointCoordinate(t)}.bind(this))},querySourceFeatures:function(t,e){return this.style.querySourceFeatures(t,e)},setStyle:function(t){return this.style&&(this.style.off("load",this._onStyleLoad).off("error",this._forwardStyleEvent).off("change",this._onStyleChange).off("source.add",this._onSourceAdd).off("source.remove",this._onSourceRemove).off("source.load",this._onSourceUpdate).off("source.error",this._forwardSourceEvent).off("source.change",this._onSourceUpdate).off("layer.add",this._forwardLayerEvent).off("layer.remove",this._forwardLayerEvent).off("layer.error",this._forwardLayerEvent).off("tile.add",this._forwardTileEvent).off("tile.remove",this._forwardTileEvent).off("tile.load",this._update).off("tile.error",this._forwardTileEvent).off("tile.stats",this._forwardTileEvent)._remove(),this.off("rotate",this.style._redoPlacement),
+-this.off("pitch",this.style._redoPlacement)),t?(t instanceof u?this.style=t:this.style=new u(t,this.animationLoop),this.style.on("load",this._onStyleLoad).on("error",this._forwardStyleEvent).on("change",this._onStyleChange).on("source.add",this._onSourceAdd).on("source.remove",this._onSourceRemove).on("source.load",this._onSourceUpdate).on("source.error",this._forwardSourceEvent).on("source.change",this._onSourceUpdate).on("layer.add",this._forwardLayerEvent).on("layer.remove",this._forwardLayerEvent).on("layer.error",this._forwardLayerEvent).on("tile.add",this._forwardTileEvent).on("tile.remove",this._forwardTileEvent).on("tile.load",this._update).on("tile.error",this._forwardTileEvent).on("tile.stats",this._forwardTileEvent),this.on("rotate",this.style._redoPlacement),this.on("pitch",this.style._redoPlacement),this):(this.style=null,this)},getStyle:function(){return this.style.serialize()},addSource:function(t,e){return this.style.addSource(t,e),this._update(!0),this},removeSource:function(t){return this.style.removeSource(t),this._update(!0),this},getSource:function(t){return this.style.getSource(t)},addLayer:function(t,e){return this.style.addLayer(t,e),this._update(!0),this},removeLayer:function(t){return this.style.removeLayer(t),this._update(!0),this},getLayer:function(t){return this.style.getLayer(t)},setFilter:function(t,e){return this.style.setFilter(t,e),this._update(!0),this},setLayerZoomRange:function(t,e,r){return this.style.setLayerZoomRange(t,e,r),this._update(!0),this},getFilter:function(t){return this.style.getFilter(t)},setPaintProperty:function(t,e,r,n){return this.style.setPaintProperty(t,e,r,n),this._update(!0),this},getPaintProperty:function(t,e,r){return this.style.getPaintProperty(t,e,r)},setLayoutProperty:function(t,e,r){return this.style.setLayoutProperty(t,e,r),this._update(!0),this},getLayoutProperty:function(t,e){return this.style.getLayoutProperty(t,e)},getContainer:function(){return this._container},getCanvasContainer:function(){return this._canvasContainer},getCanvas:function(){return this._canvas.getElement()},_setupContainer:function(){var t=this._container;t.classList.add("mapboxgl-map");var e=this._canvasContainer=l.create("div","mapboxgl-canvas-container",t);this._interactive&&e.classList.add("mapboxgl-interactive"),this._canvas=new i(this,e);var r=this._controlContainer=l.create("div","mapboxgl-control-container",t),n=this._controlCorners={};["top-left","top-right","bottom-left","bottom-right"].forEach(function(t){n[t]=l.create("div","mapboxgl-ctrl-"+t,r)})},_setupPainter:function(){var t=this._canvas.getWebGLContext({failIfMajorPerformanceCaveat:this._failIfMajorPerformanceCaveat,preserveDrawingBuffer:this._preserveDrawingBuffer});return t?void(this.painter=new h(t,this.transform)):void console.error("Failed to initialize WebGL")},_contextLost:function(t){t.preventDefault(),this._frameId&&a.cancelFrame(this._frameId),this.fire("webglcontextlost",{originalEvent:t})},_contextRestored:function(t){this._setupPainter(),this.resize(),this._update(),this.fire("webglcontextrestored",{originalEvent:t})},loaded:function(){return this._styleDirty||this._sourcesDirty?!1:!(!this.style||!this.style.loaded())},_update:function(t){return this.style?(this._styleDirty=this._styleDirty||t,this._sourcesDirty=!0,this._rerender(),this):this},_render:function(){return this.style&&this._styleDirty&&(this._styleDirty=!1,this.style.update(this._classes,this._classOptions),this._classOptions=null,this.style._recalculate(this.transform.zoom)),this.style&&this._sourcesDirty&&(this._sourcesDirty=!1,this.style._updateSources(this.transform)),this.painter.render(this.style,{debug:this.showTileBoundaries,showOverdrawInspector:this._showOverdrawInspector,vertices:this.vertices,rotating:this.rotating,zooming:this.zooming}),this.fire("render"),this.loaded()&&!this._loaded&&(this._loaded=!0,this.fire("load")),this._frameId=null,this.animationLoop.stopped()||(this._styleDirty=!0),(this._sourcesDirty||this._repaint||!this.animationLoop.stopped())&&this._rerender(),this},remove:function(){this._hash&&this._hash.remove(),a.cancelFrame(this._frameId),this.setStyle(null),"undefined"!=typeof window&&window.removeEventListener("resize",this._onWindowResize,!1),n(this._canvasContainer),n(this._controlContainer),this._container.classList.remove("mapboxgl-map")},onError:function(t){console.error(t.error)},_rerender:function(){this.style&&!this._frameId&&(this._frameId=a.frame(this._render))},_forwardStyleEvent:function(t){this.fire("style."+t.type,o.extend({style:t.target},t))},_forwardSourceEvent:function(t){this.fire(t.type,o.extend({style:t.target},t))},_forwardLayerEvent:function(t){this.fire(t.type,o.extend({style:t.target},t))},_forwardTileEvent:function(t){this.fire(t.type,o.extend({style:t.target},t))},_onStyleLoad:function(t){this.transform.unmodified&&this.jumpTo(this.style.stylesheet),this.style.update(this._classes,{transition:!1}),this._forwardStyleEvent(t)},_onStyleChange:function(t){this._update(!0),this._forwardStyleEvent(t)},_onSourceAdd:function(t){var e=t.source;e.onAdd&&e.onAdd(this),this._forwardSourceEvent(t)},_onSourceRemove:function(t){var e=t.source;e.onRemove&&e.onRemove(this),this._forwardSourceEvent(t)},_onSourceUpdate:function(t){this._update(),this._forwardSourceEvent(t)},_onWindowResize:function(){this.stop().resize()._update()}}),o.extendAll(w.prototype,{_showTileBoundaries:!1,get showTileBoundaries(){return this._showTileBoundaries},set showTileBoundaries(t){this._showTileBoundaries!==t&&(this._showTileBoundaries=t,this._update())},_showCollisionBoxes:!1,get showCollisionBoxes(){return this._showCollisionBoxes},set showCollisionBoxes(t){this._showCollisionBoxes!==t&&(this._showCollisionBoxes=t,this.style._redoPlacement())},_showOverdrawInspector:!1,get showOverdrawInspector(){return this._showOverdrawInspector},set showOverdrawInspector(t){this._showOverdrawInspector!==t&&(this._showOverdrawInspector=t,this._update())},_repaint:!1,get repaint(){return this._repaint},set repaint(t){this._repaint=t,this._update()},_vertices:!1,get vertices(){return this._vertices},set vertices(t){this._vertices=t,this._update()}})},{"../geo/lng_lat":256,"../geo/lng_lat_bounds":257,"../geo/transform":258,"../render/painter":271,"../style/animation_loop":287,"../style/style":290,"../util/browser":335,"../util/canvas":336,"../util/dom":338,"../util/evented":341,"../util/util":349,"./camera":317,"./control/attribution":318,"./hash":329,"./interaction":330,"point-geometry":404}],332:[function(t,e,r){"use strict";function n(t){i.setOptions(this,t),i.bindAll(["_update","_onClickClose"],this)}e.exports=n;var i=t("../util/util"),o=t("../util/evented"),a=t("../util/dom"),s=t("../geo/lng_lat");n.prototype=i.inherit(o,{options:{closeButton:!0,closeOnClick:!0},addTo:function(t){return this._map=t,this._map.on("move",this._update),this.options.closeOnClick&&this._map.on("click",this._onClickClose),this._update(),this},remove:function(){return this._content&&this._content.parentNode&&this._content.parentNode.removeChild(this._content),this._container&&(this._container.parentNode.removeChild(this._container),delete this._container),this._map&&(this._map.off("move",this._update),this._map.off("click",this._onClickClose),delete this._map),this},getLngLat:function(){return this._lngLat},setLngLat:function(t){return this._lngLat=s.convert(t),this._update(),this},setText:function(t){return this.setDOMContent(document.createTextNode(t))},setHTML:function(t){var e,r=document.createDocumentFragment(),n=document.createElement("body");for(n.innerHTML=t;;){if(e=n.firstChild,!e)break;r.appendChild(e)}return this.setDOMContent(r)},setDOMContent:function(t){return this._createContent(),this._content.appendChild(t),this._update(),this},_createContent:function(){this._content&&this._content.parentNode&&this._content.parentNode.removeChild(this._content),this._content=a.create("div","mapboxgl-popup-content",this._container),this.options.closeButton&&(this._closeButton=a.create("button","mapboxgl-popup-close-button",this._content),this._closeButton.innerHTML="&#215;",this._closeButton.addEventListener("click",this._onClickClose))},_update:function(){if(this._map&&this._lngLat&&this._content){this._container||(this._container=a.create("div","mapboxgl-popup",this._map.getContainer()),this._tip=a.create("div","mapboxgl-popup-tip",this._container),this._container.appendChild(this._content));var t=this._map.project(this._lngLat).round(),e=this.options.anchor;if(!e){var r=this._container.offsetWidth,n=this._container.offsetHeight;e=t.y<n?["top"]:t.y>this._map.transform.height-n?["bottom"]:[],t.x<r/2?e.push("left"):t.x>this._map.transform.width-r/2&&e.push("right"),e=0===e.length?"bottom":e.join("-")}var i={top:"translate(-50%,0)","top-left":"translate(0,0)","top-right":"translate(-100%,0)",bottom:"translate(-50%,-100%)","bottom-left":"translate(0,-100%)","bottom-right":"translate(-100%,-100%)",left:"translate(0,-50%)",right:"translate(-100%,-50%)"},o=this._container.classList;for(var s in i)o.remove("mapboxgl-popup-anchor-"+s);o.add("mapboxgl-popup-anchor-"+e),a.setTransform(this._container,i[e]+" translate("+t.x+"px,"+t.y+"px)")}},_onClickClose:function(){this.remove()}})},{"../geo/lng_lat":256,"../util/dom":338,"../util/evented":341,"../util/util":349}],333:[function(t,e,r){"use strict";function n(t,e){this.target=t,this.parent=e,this.callbacks={},this.callbackID=0,this.receive=this.receive.bind(this),this.target.addEventListener("message",this.receive,!1)}e.exports=n,n.prototype.receive=function(t){var e,r=t.data;if("<response>"===r.type)e=this.callbacks[r.id],delete this.callbacks[r.id],e(r.error||null,r.data);else if("undefined"!=typeof r.id){var n=r.id;this.parent[r.type](r.data,function(t,e,r){this.postMessage({type:"<response>",id:String(n),error:t?String(t):null,data:e},r)}.bind(this))}else this.parent[r.type](r.data)},n.prototype.send=function(t,e,r,n){var i=null;r&&(this.callbacks[i=this.callbackID++]=r),this.postMessage({type:t,id:String(i),data:e},n)},n.prototype.postMessage=function(t,e){this.target.postMessage(t,e)}},{}],334:[function(t,e,r){"use strict";function n(t){var e=document.createElement("a");return e.href=t,e.protocol===document.location.protocol&&e.host===document.location.host}r.getJSON=function(t,e){var r=new XMLHttpRequest;return r.open("GET",t,!0),r.setRequestHeader("Accept","application/json"),r.onerror=function(t){e(t)},r.onload=function(){if(r.status>=200&&r.status<300&&r.response){var t;try{t=JSON.parse(r.response)}catch(n){return e(n)}e(null,t)}else e(new Error(r.statusText))},r.send(),r},r.getArrayBuffer=function(t,e){var r=new XMLHttpRequest;return r.open("GET",t,!0),r.responseType="arraybuffer",r.onerror=function(t){e(t)},r.onload=function(){r.status>=200&&r.status<300&&r.response?e(null,r.response):e(new Error(r.statusText))},r.send(),r},r.getImage=function(t,e){return r.getArrayBuffer(t,function(t,r){if(t)return e(t);var n=new Image;n.onload=function(){e(null,n),(window.URL||window.webkitURL).revokeObjectURL(n.src)};var i=new Blob([new Uint8Array(r)],{type:"image/png"});return n.src=(window.URL||window.webkitURL).createObjectURL(i),n.getData=function(){var t=document.createElement("canvas"),e=t.getContext("2d");return t.width=n.width,t.height=n.height,e.drawImage(n,0,0),e.getImageData(0,0,n.width,n.height).data},n})},r.getVideo=function(t,e){var r=document.createElement("video");r.onloadstart=function(){e(null,r)};for(var i=0;i<t.length;i++){var o=document.createElement("source");n(t[i])||(r.crossOrigin="Anonymous"),o.src=t[i],r.appendChild(o)}return r.getData=function(){return r},r}},{}],335:[function(t,e,r){"use strict";e.exports.now=function(){return window.performance&&window.performance.now?window.performance.now.bind(window.performance):Date.now.bind(Date)}();var n=window.requestAnimationFrame||window.mozRequestAnimationFrame||window.webkitRequestAnimationFrame||window.msRequestAnimationFrame;r.frame=function(t){return n(t)};var i=window.cancelAnimationFrame||window.mozCancelAnimationFrame||window.webkitCancelAnimationFrame||window.msCancelAnimationFrame;r.cancelFrame=function(t){i(t)},r.timed=function(t,n,i){function o(l){a||(l=e.exports.now(),l>=s+n?t.call(i,1):(t.call(i,(l-s)/n),r.frame(o)))}if(!n)return t.call(i,1),null;var a=!1,s=e.exports.now();return r.frame(o),function(){a=!0}},r.supported=t("mapbox-gl-js-supported"),r.hardwareConcurrency=navigator.hardwareConcurrency||8,Object.defineProperty(r,"devicePixelRatio",{get:function(){return window.devicePixelRatio}}),r.supportsWebp=!1;var o=document.createElement("img");o.onload=function(){r.supportsWebp=!0},o.src="data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=",r.supportsGeolocation=!!navigator.geolocation},{"mapbox-gl-js-supported":375}],336:[function(t,e,r){"use strict";function n(t,e){this.canvas=document.createElement("canvas"),t&&e&&(this.canvas.style.position="absolute",this.canvas.classList.add("mapboxgl-canvas"),this.canvas.addEventListener("webglcontextlost",t._contextLost.bind(t),!1),this.canvas.addEventListener("webglcontextrestored",t._contextRestored.bind(t),!1),this.canvas.setAttribute("tabindex",0),e.appendChild(this.canvas))}var i=t("../util"),o=t("mapbox-gl-js-supported");e.exports=n,n.prototype.resize=function(t,e){var r=window.devicePixelRatio||1;this.canvas.width=r*t,this.canvas.height=r*e,this.canvas.style.width=t+"px",this.canvas.style.height=e+"px"},n.prototype.getWebGLContext=function(t){return t=i.extend({},t,o.webGLContextAttributes),this.canvas.getContext("webgl",t)||this.canvas.getContext("experimental-webgl",t)},n.prototype.getElement=function(){return this.canvas}},{"../util":349,"mapbox-gl-js-supported":375}],337:[function(t,e,r){"use strict";function n(e,r){this.actors=[],this.currentActor=0;for(var n=0;e>n;n++){var a=new o(t("../../source/worker")),s=new i(a,r);s.name="Worker "+n,this.actors.push(s)}}var i=t("../actor"),o=t("webworkify");e.exports=n,n.prototype={broadcast:function(t,e){for(var r=0;r<this.actors.length;r++)this.actors[r].send(t,e)},send:function(t,e,r,n,i){return("number"!=typeof n||isNaN(n))&&(n=this.currentActor=(this.currentActor+1)%this.actors.length),this.actors[n].send(t,e,r,i),n},remove:function(){for(var t=0;t<this.actors.length;t++)this.actors[t].target.terminate();this.actors=[]}}},{"../../source/worker":285,"../actor":333,webworkify:420}],338:[function(t,e,r){"use strict";function n(t){for(var e=0;e<t.length;e++)if(t[e]in s)return t[e]}function i(t){t.preventDefault(),t.stopPropagation(),window.removeEventListener("click",i,!0)}var o=t("point-geometry");r.create=function(t,e,r){var n=document.createElement(t);return e&&(n.className=e),r&&r.appendChild(n),n};var a,s=document.documentElement.style,l=n(["userSelect","MozUserSelect","WebkitUserSelect","msUserSelect"]);r.disableDrag=function(){l&&(a=s[l],s[l]="none")},r.enableDrag=function(){l&&(s[l]=a)};var u=n(["transform","WebkitTransform"]);r.setTransform=function(t,e){t.style[u]=e},r.suppressClick=function(){window.addEventListener("click",i,!0),window.setTimeout(function(){window.removeEventListener("click",i,!0)},0)},r.mousePos=function(t,e){var r=t.getBoundingClientRect();return e=e.touches?e.touches[0]:e,new o(e.clientX-r.left-t.clientLeft,e.clientY-r.top-t.clientTop)},r.touchPos=function(t,e){for(var r=t.getBoundingClientRect(),n=[],i=0;i<e.touches.length;i++)n.push(new o(e.touches[i].clientX-r.left-t.clientLeft,e.touches[i].clientY-r.top-t.clientTop));return n}},{"point-geometry":404}],339:[function(t,e,r){"use strict";e.exports={API_URL:"https://api.mapbox.com",REQUIRE_ACCESS_TOKEN:!0}},{}],340:[function(t,e,r){"use strict";function n(t){this._stringToNumber={},this._numberToString=[];for(var e=0;e<t.length;e++){var r=t[e];this._stringToNumber[r]=e,this._numberToString[e]=r}}var i=t("assert");e.exports=n,n.prototype.encode=function(t){return i(t in this._stringToNumber),this._stringToNumber[t]},n.prototype.decode=function(t){return i(t<this._numberToString.length),this._numberToString[t]}},{assert:52}],341:[function(t,e,r){"use strict";var n=t("./util"),i={on:function(t,e){return this._events=this._events||{},this._events[t]=this._events[t]||[],this._events[t].push(e),this},off:function(t,e){if(!t)return delete this._events,this;if(!this.listens(t))return this;if(e){var r=this._events[t].indexOf(e);r>=0&&this._events[t].splice(r,1),this._events[t].length||delete this._events[t]}else delete this._events[t];return this},once:function(t,e){var r=function(n){this.off(t,r),e.call(this,n)}.bind(this);return this.on(t,r),this},fire:function(t,e){if(!this.listens(t))return this;e=n.extend({},e),n.extend(e,{type:t,target:this});for(var r=this._events[t].slice(),i=0;i<r.length;i++)r[i].call(this,e);return this},listens:function(t){return!(!this._events||!this._events[t])}};e.exports=i},{"./util":349}],342:[function(t,e,r){"use strict";function n(t,e){this.stacks=t.readFields(i,[],e)}function i(t,e,r){if(1===t){var n=r.readMessage(o,{glyphs:{}});e.push(n)}}function o(t,e,r){if(1===t)e.name=r.readString();else if(2===t)e.range=r.readString();else if(3===t){var n=r.readMessage(a,{});e.glyphs[n.id]=n}}function a(t,e,r){1===t?e.id=r.readVarint():2===t?e.bitmap=r.readBytes():3===t?e.width=r.readVarint():4===t?e.height=r.readVarint():5===t?e.left=r.readSVarint():6===t?e.top=r.readSVarint():7===t&&(e.advance=r.readVarint())}e.exports=n},{}],343:[function(t,e,r){"use strict";function n(t,e,r){return t*(1-r)+e*r}e.exports=n,n.number=n,n.vec2=function(t,e,r){return[n(t[0],e[0],r),n(t[1],e[1],r)]},n.color=function(t,e,r){return[n(t[0],e[0],r),n(t[1],e[1],r),n(t[2],e[2],r),n(t[3],e[3],r)]},n.array=function(t,e,r){return t.map(function(t,i){return n(t,e[i],r)})}},{}],344:[function(t,e,r){"use strict";function n(t,e,r){for(var n=0;n<t.length;n++)for(var i=t[n],o=0;o<e.length;o++)for(var a=e[o],s=0;s<a.length;s++){var l=a[s];if(d(i,l))return!0;if(c(l,i,r))return!0}return!1}function i(t,e){if(1===t.length&&1===t[0].length)return f(e,t[0][0]);for(var r=0;r<e.length;r++)for(var n=e[r],i=0;i<n.length;i++)if(f(t,n[i]))return!0;for(var o=0;o<t.length;o++){for(var a=t[o],l=0;l<a.length;l++)if(f(e,a[l]))return!0;for(var u=0;u<e.length;u++)if(s(a,e[u]))return!0}return!1}function o(t,e,r){for(var n=0;n<e.length;n++)for(var i=e[n],o=0;o<t.length;o++){var s=t[o];if(s.length>=3)for(var l=0;l<i.length;l++)if(d(s,i[l]))return!0;if(a(s,i,r))return!0}return!1}function 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t[0]=d*n+f*a,t[1]=d*i+f*s,t[2]=d*o+f*l,t[3]=d*a-f*n,t[4]=d*s-f*i,t[5]=d*l-f*o,t[6]=u,t[7]=c,t[8]=h,t},i.scale=function(t,e,r){var n=r[0],i=r[1];return t[0]=n*e[0],t[1]=n*e[1],t[2]=n*e[2],t[3]=i*e[3],t[4]=i*e[4],t[5]=i*e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t},i.fromTranslation=function(t,e){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=1,t[5]=0,t[6]=e[0],t[7]=e[1],t[8]=1,t},i.fromRotation=function(t,e){var r=Math.sin(e),n=Math.cos(e);return t[0]=n,t[1]=r,t[2]=0,t[3]=-r,t[4]=n,t[5]=0,t[6]=0,t[7]=0,t[8]=1,t},i.fromScaling=function(t,e){return t[0]=e[0],t[1]=0,t[2]=0,t[3]=0,t[4]=e[1],t[5]=0,t[6]=0,t[7]=0,t[8]=1,t},i.fromMat2d=function(t,e){return t[0]=e[0],t[1]=e[1],t[2]=0,t[3]=e[2],t[4]=e[3],t[5]=0,t[6]=e[4],t[7]=e[5],t[8]=1,t},i.fromQuat=function(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=r+r,s=n+n,l=i+i,u=r*a,c=n*a,h=n*s,f=i*a,d=i*s,p=i*l,v=o*a,m=o*s,g=o*l;return t[0]=1-h-p,t[3]=c-g,t[6]=f+m,t[1]=c+g,t[4]=1-u-p,t[7]=d-v,t[2]=f-m,t[5]=d+v,t[8]=1-u-h,t},i.normalFromMat4=function(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],h=e[9],f=e[10],d=e[11],p=e[12],v=e[13],m=e[14],g=e[15],y=r*s-n*a,b=r*l-i*a,x=r*u-o*a,_=n*l-i*s,w=n*u-o*s,M=i*u-o*l,k=c*v-h*p,A=c*m-f*p,T=c*g-d*p,E=h*m-f*v,S=h*g-d*v,L=f*g-d*m,z=y*L-b*S+x*E+_*T-w*A+M*k;return z?(z=1/z,t[0]=(s*L-l*S+u*E)*z,t[1]=(l*T-a*L-u*A)*z,t[2]=(a*S-s*T+u*k)*z,t[3]=(i*S-n*L-o*E)*z,t[4]=(r*L-i*T+o*A)*z,t[5]=(n*T-r*S-o*k)*z,t[6]=(v*M-m*w+g*_)*z,t[7]=(m*x-p*M-g*b)*z,t[8]=(p*w-v*x+g*y)*z,t):null},i.str=function(t){return"mat3("+t[0]+", "+t[1]+", "+t[2]+", "+t[3]+", "+t[4]+", "+t[5]+", "+t[6]+", "+t[7]+", "+t[8]+")"},i.frob=function(t){return Math.sqrt(Math.pow(t[0],2)+Math.pow(t[1],2)+Math.pow(t[2],2)+Math.pow(t[3],2)+Math.pow(t[4],2)+Math.pow(t[5],2)+Math.pow(t[6],2)+Math.pow(t[7],2)+Math.pow(t[8],2))},i.add=function(t,e,r){return t[0]=e[0]+r[0],t[1]=e[1]+r[1],t[2]=e[2]+r[2],t[3]=e[3]+r[3],t[4]=e[4]+r[4],t[5]=e[5]+r[5],t[6]=e[6]+r[6],t[7]=e[7]+r[7],t[8]=e[8]+r[8],t},i.subtract=function(t,e,r){return t[0]=e[0]-r[0],t[1]=e[1]-r[1],t[2]=e[2]-r[2],t[3]=e[3]-r[3],t[4]=e[4]-r[4],t[5]=e[5]-r[5],t[6]=e[6]-r[6],t[7]=e[7]-r[7],t[8]=e[8]-r[8],t},i.sub=i.subtract,i.multiplyScalar=function(t,e,r){return t[0]=e[0]*r,t[1]=e[1]*r,t[2]=e[2]*r,t[3]=e[3]*r,t[4]=e[4]*r,t[5]=e[5]*r,t[6]=e[6]*r,t[7]=e[7]*r,t[8]=e[8]*r,t},i.multiplyScalarAndAdd=function(t,e,r,n){return t[0]=e[0]+r[0]*n,t[1]=e[1]+r[1]*n,t[2]=e[2]+r[2]*n,t[3]=e[3]+r[3]*n,t[4]=e[4]+r[4]*n,t[5]=e[5]+r[5]*n,t[6]=e[6]+r[6]*n,t[7]=e[7]+r[7]*n,t[8]=e[8]+r[8]*n,t},i.exactEquals=function(t,e){return t[0]===e[0]&&t[1]===e[1]&&t[2]===e[2]&&t[3]===e[3]&&t[4]===e[4]&&t[5]===e[5]&&t[6]===e[6]&&t[7]===e[7]&&t[8]===e[8]},i.equals=function(t,e){var r=t[0],i=t[1],o=t[2],a=t[3],s=t[4],l=t[5],u=t[6],c=t[7],h=t[8],f=e[0],d=e[1],p=e[2],v=e[3],m=e[4],g=e[5],y=t[6],b=e[7],x=e[8];return Math.abs(r-f)<=n.EPSILON*Math.max(1,Math.abs(r),Math.abs(f))&&Math.abs(i-d)<=n.EPSILON*Math.max(1,Math.abs(i),Math.abs(d))&&Math.abs(o-p)<=n.EPSILON*Math.max(1,Math.abs(o),Math.abs(p))&&Math.abs(a-v)<=n.EPSILON*Math.max(1,Math.abs(a),Math.abs(v))&&Math.abs(s-m)<=n.EPSILON*Math.max(1,Math.abs(s),Math.abs(m))&&Math.abs(l-g)<=n.EPSILON*Math.max(1,Math.abs(l),Math.abs(g))&&Math.abs(u-y)<=n.EPSILON*Math.max(1,Math.abs(u),Math.abs(y))&&Math.abs(c-b)<=n.EPSILON*Math.max(1,Math.abs(c),Math.abs(b))&&Math.abs(h-x)<=n.EPSILON*Math.max(1,Math.abs(h),Math.abs(x))},e.exports=i},{"./common.js":364}],368:[function(t,e,r){var n=t("./common.js"),i={scalar:{},SIMD:{}};i.create=function(){var t=new n.ARRAY_TYPE(16);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.clone=function(t){var e=new n.ARRAY_TYPE(16);return e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e[4]=t[4],e[5]=t[5],e[6]=t[6],e[7]=t[7],e[8]=t[8],e[9]=t[9],e[10]=t[10],e[11]=t[11],e[12]=t[12],e[13]=t[13],e[14]=t[14],e[15]=t[15],e},i.copy=function(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.fromValues=function(t,e,r,i,o,a,s,l,u,c,h,f,d,p,v,m){var g=new n.ARRAY_TYPE(16);return g[0]=t,g[1]=e,g[2]=r,g[3]=i,g[4]=o,g[5]=a,g[6]=s,g[7]=l,g[8]=u,g[9]=c,g[10]=h,g[11]=f,g[12]=d,g[13]=p,g[14]=v,g[15]=m,g},i.set=function(t,e,r,n,i,o,a,s,l,u,c,h,f,d,p,v,m){return t[0]=e,t[1]=r,t[2]=n,t[3]=i,t[4]=o,t[5]=a,t[6]=s,t[7]=l,t[8]=u,t[9]=c,t[10]=h,t[11]=f,t[12]=d,t[13]=p,t[14]=v,t[15]=m,t},i.identity=function(t){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.scalar.transpose=function(t,e){if(t===e){var r=e[1],n=e[2],i=e[3],o=e[6],a=e[7],s=e[11];t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=r,t[6]=e[9],t[7]=e[13],t[8]=n,t[9]=o,t[11]=e[14],t[12]=i,t[13]=a,t[14]=s}else t[0]=e[0],t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=e[1],t[5]=e[5],t[6]=e[9],t[7]=e[13],t[8]=e[2],t[9]=e[6],t[10]=e[10],t[11]=e[14],t[12]=e[3],t[13]=e[7],t[14]=e[11],t[15]=e[15];return t},i.SIMD.transpose=function(t,e){var r,n,i,o,a,s,l,u,c,h;return r=SIMD.Float32x4.load(e,0),n=SIMD.Float32x4.load(e,4),i=SIMD.Float32x4.load(e,8),o=SIMD.Float32x4.load(e,12),a=SIMD.Float32x4.shuffle(r,n,0,1,4,5),s=SIMD.Float32x4.shuffle(i,o,0,1,4,5),l=SIMD.Float32x4.shuffle(a,s,0,2,4,6),u=SIMD.Float32x4.shuffle(a,s,1,3,5,7),SIMD.Float32x4.store(t,0,l),SIMD.Float32x4.store(t,4,u),a=SIMD.Float32x4.shuffle(r,n,2,3,6,7),s=SIMD.Float32x4.shuffle(i,o,2,3,6,7),c=SIMD.Float32x4.shuffle(a,s,0,2,4,6),h=SIMD.Float32x4.shuffle(a,s,1,3,5,7),SIMD.Float32x4.store(t,8,c),SIMD.Float32x4.store(t,12,h),t},i.transpose=n.USE_SIMD?i.SIMD.transpose:i.scalar.transpose,i.scalar.invert=function(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],h=e[9],f=e[10],d=e[11],p=e[12],v=e[13],m=e[14],g=e[15],y=r*s-n*a,b=r*l-i*a,x=r*u-o*a,_=n*l-i*s,w=n*u-o*s,M=i*u-o*l,k=c*v-h*p,A=c*m-f*p,T=c*g-d*p,E=h*m-f*v,S=h*g-d*v,L=f*g-d*m,z=y*L-b*S+x*E+_*T-w*A+M*k;return z?(z=1/z,t[0]=(s*L-l*S+u*E)*z,t[1]=(i*S-n*L-o*E)*z,t[2]=(v*M-m*w+g*_)*z,t[3]=(f*w-h*M-d*_)*z,t[4]=(l*T-a*L-u*A)*z,t[5]=(r*L-i*T+o*A)*z,t[6]=(m*x-p*M-g*b)*z,t[7]=(c*M-f*x+d*b)*z,t[8]=(a*S-s*T+u*k)*z,t[9]=(n*T-r*S-o*k)*z,t[10]=(p*w-v*x+g*y)*z,t[11]=(h*x-c*w-d*y)*z,t[12]=(s*A-a*E-l*k)*z,t[13]=(r*E-n*A+i*k)*z,t[14]=(v*b-p*_-m*y)*z,t[15]=(c*_-h*b+f*y)*z,t):null},i.SIMD.invert=function(t,e){var r,n,i,o,a,s,l,u,c,h,f=SIMD.Float32x4.load(e,0),d=SIMD.Float32x4.load(e,4),p=SIMD.Float32x4.load(e,8),v=SIMD.Float32x4.load(e,12);return a=SIMD.Float32x4.shuffle(f,d,0,1,4,5),n=SIMD.Float32x4.shuffle(p,v,0,1,4,5),r=SIMD.Float32x4.shuffle(a,n,0,2,4,6),n=SIMD.Float32x4.shuffle(n,a,1,3,5,7),a=SIMD.Float32x4.shuffle(f,d,2,3,6,7),o=SIMD.Float32x4.shuffle(p,v,2,3,6,7),i=SIMD.Float32x4.shuffle(a,o,0,2,4,6),o=SIMD.Float32x4.shuffle(o,a,1,3,5,7),a=SIMD.Float32x4.mul(i,o),a=SIMD.Float32x4.swizzle(a,1,0,3,2),s=SIMD.Float32x4.mul(n,a),l=SIMD.Float32x4.mul(r,a),a=SIMD.Float32x4.swizzle(a,2,3,0,1),s=SIMD.Float32x4.sub(SIMD.Float32x4.mul(n,a),s),l=SIMD.Float32x4.sub(SIMD.Float32x4.mul(r,a),l),l=SIMD.Float32x4.swizzle(l,2,3,0,1),a=SIMD.Float32x4.mul(n,i),a=SIMD.Float32x4.swizzle(a,1,0,3,2),s=SIMD.Float32x4.add(SIMD.Float32x4.mul(o,a),s),c=SIMD.Float32x4.mul(r,a),a=SIMD.Float32x4.swizzle(a,2,3,0,1),s=SIMD.Float32x4.sub(s,SIMD.Float32x4.mul(o,a)),c=SIMD.Float32x4.sub(SIMD.Float32x4.mul(r,a),c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),a=SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(n,2,3,0,1),o),a=SIMD.Float32x4.swizzle(a,1,0,3,2),i=SIMD.Float32x4.swizzle(i,2,3,0,1),s=SIMD.Float32x4.add(SIMD.Float32x4.mul(i,a),s),u=SIMD.Float32x4.mul(r,a),a=SIMD.Float32x4.swizzle(a,2,3,0,1),s=SIMD.Float32x4.sub(s,SIMD.Float32x4.mul(i,a)),u=SIMD.Float32x4.sub(SIMD.Float32x4.mul(r,a),u),u=SIMD.Float32x4.swizzle(u,2,3,0,1),a=SIMD.Float32x4.mul(r,n),a=SIMD.Float32x4.swizzle(a,1,0,3,2),u=SIMD.Float32x4.add(SIMD.Float32x4.mul(o,a),u),c=SIMD.Float32x4.sub(SIMD.Float32x4.mul(i,a),c),a=SIMD.Float32x4.swizzle(a,2,3,0,1),u=SIMD.Float32x4.sub(SIMD.Float32x4.mul(o,a),u),c=SIMD.Float32x4.sub(c,SIMD.Float32x4.mul(i,a)),a=SIMD.Float32x4.mul(r,o),a=SIMD.Float32x4.swizzle(a,1,0,3,2),l=SIMD.Float32x4.sub(l,SIMD.Float32x4.mul(i,a)),u=SIMD.Float32x4.add(SIMD.Float32x4.mul(n,a),u),a=SIMD.Float32x4.swizzle(a,2,3,0,1),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(i,a),l),u=SIMD.Float32x4.sub(u,SIMD.Float32x4.mul(n,a)),a=SIMD.Float32x4.mul(r,i),a=SIMD.Float32x4.swizzle(a,1,0,3,2),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(o,a),l),c=SIMD.Float32x4.sub(c,SIMD.Float32x4.mul(n,a)),a=SIMD.Float32x4.swizzle(a,2,3,0,1),l=SIMD.Float32x4.sub(l,SIMD.Float32x4.mul(o,a)),c=SIMD.Float32x4.add(SIMD.Float32x4.mul(n,a),c),
+-h=SIMD.Float32x4.mul(r,s),h=SIMD.Float32x4.add(SIMD.Float32x4.swizzle(h,2,3,0,1),h),h=SIMD.Float32x4.add(SIMD.Float32x4.swizzle(h,1,0,3,2),h),a=SIMD.Float32x4.reciprocalApproximation(h),h=SIMD.Float32x4.sub(SIMD.Float32x4.add(a,a),SIMD.Float32x4.mul(h,SIMD.Float32x4.mul(a,a))),(h=SIMD.Float32x4.swizzle(h,0,0,0,0))?(SIMD.Float32x4.store(t,0,SIMD.Float32x4.mul(h,s)),SIMD.Float32x4.store(t,4,SIMD.Float32x4.mul(h,l)),SIMD.Float32x4.store(t,8,SIMD.Float32x4.mul(h,u)),SIMD.Float32x4.store(t,12,SIMD.Float32x4.mul(h,c)),t):null},i.invert=n.USE_SIMD?i.SIMD.invert:i.scalar.invert,i.scalar.adjoint=function(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],h=e[9],f=e[10],d=e[11],p=e[12],v=e[13],m=e[14],g=e[15];return t[0]=s*(f*g-d*m)-h*(l*g-u*m)+v*(l*d-u*f),t[1]=-(n*(f*g-d*m)-h*(i*g-o*m)+v*(i*d-o*f)),t[2]=n*(l*g-u*m)-s*(i*g-o*m)+v*(i*u-o*l),t[3]=-(n*(l*d-u*f)-s*(i*d-o*f)+h*(i*u-o*l)),t[4]=-(a*(f*g-d*m)-c*(l*g-u*m)+p*(l*d-u*f)),t[5]=r*(f*g-d*m)-c*(i*g-o*m)+p*(i*d-o*f),t[6]=-(r*(l*g-u*m)-a*(i*g-o*m)+p*(i*u-o*l)),t[7]=r*(l*d-u*f)-a*(i*d-o*f)+c*(i*u-o*l),t[8]=a*(h*g-d*v)-c*(s*g-u*v)+p*(s*d-u*h),t[9]=-(r*(h*g-d*v)-c*(n*g-o*v)+p*(n*d-o*h)),t[10]=r*(s*g-u*v)-a*(n*g-o*v)+p*(n*u-o*s),t[11]=-(r*(s*d-u*h)-a*(n*d-o*h)+c*(n*u-o*s)),t[12]=-(a*(h*m-f*v)-c*(s*m-l*v)+p*(s*f-l*h)),t[13]=r*(h*m-f*v)-c*(n*m-i*v)+p*(n*f-i*h),t[14]=-(r*(s*m-l*v)-a*(n*m-i*v)+p*(n*l-i*s)),t[15]=r*(s*f-l*h)-a*(n*f-i*h)+c*(n*l-i*s),t},i.SIMD.adjoint=function(t,e){var r,n,i,o,a,s,l,u,c,h,f,d,p,r=SIMD.Float32x4.load(e,0),n=SIMD.Float32x4.load(e,4),i=SIMD.Float32x4.load(e,8),o=SIMD.Float32x4.load(e,12);return c=SIMD.Float32x4.shuffle(r,n,0,1,4,5),s=SIMD.Float32x4.shuffle(i,o,0,1,4,5),a=SIMD.Float32x4.shuffle(c,s,0,2,4,6),s=SIMD.Float32x4.shuffle(s,c,1,3,5,7),c=SIMD.Float32x4.shuffle(r,n,2,3,6,7),u=SIMD.Float32x4.shuffle(i,o,2,3,6,7),l=SIMD.Float32x4.shuffle(c,u,0,2,4,6),u=SIMD.Float32x4.shuffle(u,c,1,3,5,7),c=SIMD.Float32x4.mul(l,u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),h=SIMD.Float32x4.mul(s,c),f=SIMD.Float32x4.mul(a,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),h=SIMD.Float32x4.sub(SIMD.Float32x4.mul(s,c),h),f=SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,c),f),f=SIMD.Float32x4.swizzle(f,2,3,0,1),c=SIMD.Float32x4.mul(s,l),c=SIMD.Float32x4.swizzle(c,1,0,3,2),h=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),h),p=SIMD.Float32x4.mul(a,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),h=SIMD.Float32x4.sub(h,SIMD.Float32x4.mul(u,c)),p=SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,c),p),p=SIMD.Float32x4.swizzle(p,2,3,0,1),c=SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,2,3,0,1),u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),l=SIMD.Float32x4.swizzle(l,2,3,0,1),h=SIMD.Float32x4.add(SIMD.Float32x4.mul(l,c),h),d=SIMD.Float32x4.mul(a,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),h=SIMD.Float32x4.sub(h,SIMD.Float32x4.mul(l,c)),d=SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,c),d),d=SIMD.Float32x4.swizzle(d,2,3,0,1),c=SIMD.Float32x4.mul(a,s),c=SIMD.Float32x4.swizzle(c,1,0,3,2),d=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),d),p=SIMD.Float32x4.sub(SIMD.Float32x4.mul(l,c),p),c=SIMD.Float32x4.swizzle(c,2,3,0,1),d=SIMD.Float32x4.sub(SIMD.Float32x4.mul(u,c),d),p=SIMD.Float32x4.sub(p,SIMD.Float32x4.mul(l,c)),c=SIMD.Float32x4.mul(a,u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),f=SIMD.Float32x4.sub(f,SIMD.Float32x4.mul(l,c)),d=SIMD.Float32x4.add(SIMD.Float32x4.mul(s,c),d),c=SIMD.Float32x4.swizzle(c,2,3,0,1),f=SIMD.Float32x4.add(SIMD.Float32x4.mul(l,c),f),d=SIMD.Float32x4.sub(d,SIMD.Float32x4.mul(s,c)),c=SIMD.Float32x4.mul(a,l),c=SIMD.Float32x4.swizzle(c,1,0,3,2),f=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),f),p=SIMD.Float32x4.sub(p,SIMD.Float32x4.mul(s,c)),c=SIMD.Float32x4.swizzle(c,2,3,0,1),f=SIMD.Float32x4.sub(f,SIMD.Float32x4.mul(u,c)),p=SIMD.Float32x4.add(SIMD.Float32x4.mul(s,c),p),SIMD.Float32x4.store(t,0,h),SIMD.Float32x4.store(t,4,f),SIMD.Float32x4.store(t,8,d),SIMD.Float32x4.store(t,12,p),t},i.adjoint=n.USE_SIMD?i.SIMD.adjoint:i.scalar.adjoint,i.determinant=function(t){var e=t[0],r=t[1],n=t[2],i=t[3],o=t[4],a=t[5],s=t[6],l=t[7],u=t[8],c=t[9],h=t[10],f=t[11],d=t[12],p=t[13],v=t[14],m=t[15],g=e*a-r*o,y=e*s-n*o,b=e*l-i*o,x=r*s-n*a,_=r*l-i*a,w=n*l-i*s,M=u*p-c*d,k=u*v-h*d,A=u*m-f*d,T=c*v-h*p,E=c*m-f*p,S=h*m-f*v;return g*S-y*E+b*T+x*A-_*k+w*M},i.SIMD.multiply=function(t,e,r){var n=SIMD.Float32x4.load(e,0),i=SIMD.Float32x4.load(e,4),o=SIMD.Float32x4.load(e,8),a=SIMD.Float32x4.load(e,12),s=SIMD.Float32x4.load(r,0),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,0,0,0,0),n),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,3,3,3,3),a))));SIMD.Float32x4.store(t,0,l);var u=SIMD.Float32x4.load(r,4),c=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,0,0,0,0),n),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,3,3,3,3),a))));SIMD.Float32x4.store(t,4,c);var h=SIMD.Float32x4.load(r,8),f=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(h,0,0,0,0),n),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(h,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(h,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(h,3,3,3,3),a))));SIMD.Float32x4.store(t,8,f);var d=SIMD.Float32x4.load(r,12),p=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,0,0,0,0),n),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,3,3,3,3),a))));return SIMD.Float32x4.store(t,12,p),t},i.scalar.multiply=function(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],h=e[8],f=e[9],d=e[10],p=e[11],v=e[12],m=e[13],g=e[14],y=e[15],b=r[0],x=r[1],_=r[2],w=r[3];return t[0]=b*n+x*s+_*h+w*v,t[1]=b*i+x*l+_*f+w*m,t[2]=b*o+x*u+_*d+w*g,t[3]=b*a+x*c+_*p+w*y,b=r[4],x=r[5],_=r[6],w=r[7],t[4]=b*n+x*s+_*h+w*v,t[5]=b*i+x*l+_*f+w*m,t[6]=b*o+x*u+_*d+w*g,t[7]=b*a+x*c+_*p+w*y,b=r[8],x=r[9],_=r[10],w=r[11],t[8]=b*n+x*s+_*h+w*v,t[9]=b*i+x*l+_*f+w*m,t[10]=b*o+x*u+_*d+w*g,t[11]=b*a+x*c+_*p+w*y,b=r[12],x=r[13],_=r[14],w=r[15],t[12]=b*n+x*s+_*h+w*v,t[13]=b*i+x*l+_*f+w*m,t[14]=b*o+x*u+_*d+w*g,t[15]=b*a+x*c+_*p+w*y,t},i.multiply=n.USE_SIMD?i.SIMD.multiply:i.scalar.multiply,i.mul=i.multiply,i.scalar.translate=function(t,e,r){var n,i,o,a,s,l,u,c,h,f,d,p,v=r[0],m=r[1],g=r[2];return e===t?(t[12]=e[0]*v+e[4]*m+e[8]*g+e[12],t[13]=e[1]*v+e[5]*m+e[9]*g+e[13],t[14]=e[2]*v+e[6]*m+e[10]*g+e[14],t[15]=e[3]*v+e[7]*m+e[11]*g+e[15]):(n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],h=e[8],f=e[9],d=e[10],p=e[11],t[0]=n,t[1]=i,t[2]=o,t[3]=a,t[4]=s,t[5]=l,t[6]=u,t[7]=c,t[8]=h,t[9]=f,t[10]=d,t[11]=p,t[12]=n*v+s*m+h*g+e[12],t[13]=i*v+l*m+f*g+e[13],t[14]=o*v+u*m+d*g+e[14],t[15]=a*v+c*m+p*g+e[15]),t},i.SIMD.translate=function(t,e,r){var n=SIMD.Float32x4.load(e,0),i=SIMD.Float32x4.load(e,4),o=SIMD.Float32x4.load(e,8),a=SIMD.Float32x4.load(e,12),s=SIMD.Float32x4(r[0],r[1],r[2],0);e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11]),n=SIMD.Float32x4.mul(n,SIMD.Float32x4.swizzle(s,0,0,0,0)),i=SIMD.Float32x4.mul(i,SIMD.Float32x4.swizzle(s,1,1,1,1)),o=SIMD.Float32x4.mul(o,SIMD.Float32x4.swizzle(s,2,2,2,2));var l=SIMD.Float32x4.add(n,SIMD.Float32x4.add(i,SIMD.Float32x4.add(o,a)));return SIMD.Float32x4.store(t,12,l),t},i.translate=n.USE_SIMD?i.SIMD.translate:i.scalar.translate,i.scalar.scale=function(t,e,r){var n=r[0],i=r[1],o=r[2];return t[0]=e[0]*n,t[1]=e[1]*n,t[2]=e[2]*n,t[3]=e[3]*n,t[4]=e[4]*i,t[5]=e[5]*i,t[6]=e[6]*i,t[7]=e[7]*i,t[8]=e[8]*o,t[9]=e[9]*o,t[10]=e[10]*o,t[11]=e[11]*o,t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.SIMD.scale=function(t,e,r){var n,i,o,a=SIMD.Float32x4(r[0],r[1],r[2],0);return n=SIMD.Float32x4.load(e,0),SIMD.Float32x4.store(t,0,SIMD.Float32x4.mul(n,SIMD.Float32x4.swizzle(a,0,0,0,0))),i=SIMD.Float32x4.load(e,4),SIMD.Float32x4.store(t,4,SIMD.Float32x4.mul(i,SIMD.Float32x4.swizzle(a,1,1,1,1))),o=SIMD.Float32x4.load(e,8),SIMD.Float32x4.store(t,8,SIMD.Float32x4.mul(o,SIMD.Float32x4.swizzle(a,2,2,2,2))),t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.scale=n.USE_SIMD?i.SIMD.scale:i.scalar.scale,i.rotate=function(t,e,r,i){var o,a,s,l,u,c,h,f,d,p,v,m,g,y,b,x,_,w,M,k,A,T,E,S,L=i[0],z=i[1],I=i[2],P=Math.sqrt(L*L+z*z+I*I);return Math.abs(P)<n.EPSILON?null:(P=1/P,L*=P,z*=P,I*=P,o=Math.sin(r),a=Math.cos(r),s=1-a,l=e[0],u=e[1],c=e[2],h=e[3],f=e[4],d=e[5],p=e[6],v=e[7],m=e[8],g=e[9],y=e[10],b=e[11],x=L*L*s+a,_=z*L*s+I*o,w=I*L*s-z*o,M=L*z*s-I*o,k=z*z*s+a,A=I*z*s+L*o,T=L*I*s+z*o,E=z*I*s-L*o,S=I*I*s+a,t[0]=l*x+f*_+m*w,t[1]=u*x+d*_+g*w,t[2]=c*x+p*_+y*w,t[3]=h*x+v*_+b*w,t[4]=l*M+f*k+m*A,t[5]=u*M+d*k+g*A,t[6]=c*M+p*k+y*A,t[7]=h*M+v*k+b*A,t[8]=l*T+f*E+m*S,t[9]=u*T+d*E+g*S,t[10]=c*T+p*E+y*S,t[11]=h*T+v*E+b*S,e!==t&&(t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t)},i.scalar.rotateX=function(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[4],a=e[5],s=e[6],l=e[7],u=e[8],c=e[9],h=e[10],f=e[11];return e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[4]=o*i+u*n,t[5]=a*i+c*n,t[6]=s*i+h*n,t[7]=l*i+f*n,t[8]=u*i-o*n,t[9]=c*i-a*n,t[10]=h*i-s*n,t[11]=f*i-l*n,t},i.SIMD.rotateX=function(t,e,r){var n=SIMD.Float32x4.splat(Math.sin(r)),i=SIMD.Float32x4.splat(Math.cos(r));e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var o=SIMD.Float32x4.load(e,4),a=SIMD.Float32x4.load(e,8);return SIMD.Float32x4.store(t,4,SIMD.Float32x4.add(SIMD.Float32x4.mul(o,i),SIMD.Float32x4.mul(a,n))),SIMD.Float32x4.store(t,8,SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,i),SIMD.Float32x4.mul(o,n))),t},i.rotateX=n.USE_SIMD?i.SIMD.rotateX:i.scalar.rotateX,i.scalar.rotateY=function(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[0],a=e[1],s=e[2],l=e[3],u=e[8],c=e[9],h=e[10],f=e[11];return e!==t&&(t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i-u*n,t[1]=a*i-c*n,t[2]=s*i-h*n,t[3]=l*i-f*n,t[8]=o*n+u*i,t[9]=a*n+c*i,t[10]=s*n+h*i,t[11]=l*n+f*i,t},i.SIMD.rotateY=function(t,e,r){var n=SIMD.Float32x4.splat(Math.sin(r)),i=SIMD.Float32x4.splat(Math.cos(r));e!==t&&(t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var o=SIMD.Float32x4.load(e,0),a=SIMD.Float32x4.load(e,8);return SIMD.Float32x4.store(t,0,SIMD.Float32x4.sub(SIMD.Float32x4.mul(o,i),SIMD.Float32x4.mul(a,n))),SIMD.Float32x4.store(t,8,SIMD.Float32x4.add(SIMD.Float32x4.mul(o,n),SIMD.Float32x4.mul(a,i))),t},i.rotateY=n.USE_SIMD?i.SIMD.rotateY:i.scalar.rotateY,i.scalar.rotateZ=function(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[0],a=e[1],s=e[2],l=e[3],u=e[4],c=e[5],h=e[6],f=e[7];return e!==t&&(t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i+u*n,t[1]=a*i+c*n,t[2]=s*i+h*n,t[3]=l*i+f*n,t[4]=u*i-o*n,t[5]=c*i-a*n,t[6]=h*i-s*n,t[7]=f*i-l*n,t},i.SIMD.rotateZ=function(t,e,r){var n=SIMD.Float32x4.splat(Math.sin(r)),i=SIMD.Float32x4.splat(Math.cos(r));e!==t&&(t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var o=SIMD.Float32x4.load(e,0),a=SIMD.Float32x4.load(e,4);return SIMD.Float32x4.store(t,0,SIMD.Float32x4.add(SIMD.Float32x4.mul(o,i),SIMD.Float32x4.mul(a,n))),SIMD.Float32x4.store(t,4,SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,i),SIMD.Float32x4.mul(o,n))),t},i.rotateZ=n.USE_SIMD?i.SIMD.rotateZ:i.scalar.rotateZ,i.fromTranslation=function(t,e){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=e[0],t[13]=e[1],t[14]=e[2],t[15]=1,t},i.fromScaling=function(t,e){return t[0]=e[0],t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=e[1],t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=e[2],t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromRotation=function(t,e,r){var i,o,a,s=r[0],l=r[1],u=r[2],c=Math.sqrt(s*s+l*l+u*u);return Math.abs(c)<n.EPSILON?null:(c=1/c,s*=c,l*=c,u*=c,i=Math.sin(e),o=Math.cos(e),a=1-o,t[0]=s*s*a+o,t[1]=l*s*a+u*i,t[2]=u*s*a-l*i,t[3]=0,t[4]=s*l*a-u*i,t[5]=l*l*a+o,t[6]=u*l*a+s*i,t[7]=0,t[8]=s*u*a+l*i,t[9]=l*u*a-s*i,t[10]=u*u*a+o,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t)},i.fromXRotation=function(t,e){var r=Math.sin(e),n=Math.cos(e);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=n,t[6]=r,t[7]=0,t[8]=0,t[9]=-r,t[10]=n,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromYRotation=function(t,e){var r=Math.sin(e),n=Math.cos(e);return t[0]=n,t[1]=0,t[2]=-r,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=r,t[9]=0,t[10]=n,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromZRotation=function(t,e){var r=Math.sin(e),n=Math.cos(e);return t[0]=n,t[1]=r,t[2]=0,t[3]=0,t[4]=-r,t[5]=n,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromRotationTranslation=function(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=n+n,l=i+i,u=o+o,c=n*s,h=n*l,f=n*u,d=i*l,p=i*u,v=o*u,m=a*s,g=a*l,y=a*u;return t[0]=1-(d+v),t[1]=h+y,t[2]=f-g,t[3]=0,t[4]=h-y,t[5]=1-(c+v),t[6]=p+m,t[7]=0,t[8]=f+g,t[9]=p-m,t[10]=1-(c+d),t[11]=0,t[12]=r[0],t[13]=r[1],t[14]=r[2],t[15]=1,t},i.getTranslation=function(t,e){return t[0]=e[12],t[1]=e[13],t[2]=e[14],t},i.getRotation=function(t,e){var r=e[0]+e[5]+e[10],n=0;return r>0?(n=2*Math.sqrt(r+1),t[3]=.25*n,t[0]=(e[6]-e[9])/n,t[1]=(e[8]-e[2])/n,t[2]=(e[1]-e[4])/n):e[0]>e[5]&e[0]>e[10]?(n=2*Math.sqrt(1+e[0]-e[5]-e[10]),t[3]=(e[6]-e[9])/n,t[0]=.25*n,t[1]=(e[1]+e[4])/n,t[2]=(e[8]+e[2])/n):e[5]>e[10]?(n=2*Math.sqrt(1+e[5]-e[0]-e[10]),t[3]=(e[8]-e[2])/n,t[0]=(e[1]+e[4])/n,t[1]=.25*n,t[2]=(e[6]+e[9])/n):(n=2*Math.sqrt(1+e[10]-e[0]-e[5]),t[3]=(e[1]-e[4])/n,t[0]=(e[8]+e[2])/n,t[1]=(e[6]+e[9])/n,t[2]=.25*n),t},i.fromRotationTranslationScale=function(t,e,r,n){var i=e[0],o=e[1],a=e[2],s=e[3],l=i+i,u=o+o,c=a+a,h=i*l,f=i*u,d=i*c,p=o*u,v=o*c,m=a*c,g=s*l,y=s*u,b=s*c,x=n[0],_=n[1],w=n[2];return t[0]=(1-(p+m))*x,t[1]=(f+b)*x,t[2]=(d-y)*x,t[3]=0,t[4]=(f-b)*_,t[5]=(1-(h+m))*_,t[6]=(v+g)*_,t[7]=0,t[8]=(d+y)*w,t[9]=(v-g)*w,t[10]=(1-(h+p))*w,t[11]=0,t[12]=r[0],t[13]=r[1],t[14]=r[2],t[15]=1,t},i.fromRotationTranslationScaleOrigin=function(t,e,r,n,i){var o=e[0],a=e[1],s=e[2],l=e[3],u=o+o,c=a+a,h=s+s,f=o*u,d=o*c,p=o*h,v=a*c,m=a*h,g=s*h,y=l*u,b=l*c,x=l*h,_=n[0],w=n[1],M=n[2],k=i[0],A=i[1],T=i[2];return t[0]=(1-(v+g))*_,t[1]=(d+x)*_,t[2]=(p-b)*_,t[3]=0,t[4]=(d-x)*w,t[5]=(1-(f+g))*w,t[6]=(m+y)*w,t[7]=0,t[8]=(p+b)*M,t[9]=(m-y)*M,t[10]=(1-(f+v))*M,t[11]=0,t[12]=r[0]+k-(t[0]*k+t[4]*A+t[8]*T),t[13]=r[1]+A-(t[1]*k+t[5]*A+t[9]*T),t[14]=r[2]+T-(t[2]*k+t[6]*A+t[10]*T),t[15]=1,t},i.fromQuat=function(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=r+r,s=n+n,l=i+i,u=r*a,c=n*a,h=n*s,f=i*a,d=i*s,p=i*l,v=o*a,m=o*s,g=o*l;return t[0]=1-h-p,t[1]=c+g,t[2]=f-m,t[3]=0,t[4]=c-g,t[5]=1-u-p,t[6]=d+v,t[7]=0,t[8]=f+m,t[9]=d-v,t[10]=1-u-h,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.frustum=function(t,e,r,n,i,o,a){var s=1/(r-e),l=1/(i-n),u=1/(o-a);return t[0]=2*o*s,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=2*o*l,t[6]=0,t[7]=0,t[8]=(r+e)*s,t[9]=(i+n)*l,t[10]=(a+o)*u,t[11]=-1,t[12]=0,t[13]=0,t[14]=a*o*2*u,t[15]=0,t},i.perspective=function(t,e,r,n,i){var o=1/Math.tan(e/2),a=1/(n-i);return t[0]=o/r,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=o,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=(i+n)*a,t[11]=-1,t[12]=0,t[13]=0,t[14]=2*i*n*a,t[15]=0,t},i.perspectiveFromFieldOfView=function(t,e,r,n){var i=Math.tan(e.upDegrees*Math.PI/180),o=Math.tan(e.downDegrees*Math.PI/180),a=Math.tan(e.leftDegrees*Math.PI/180),s=Math.tan(e.rightDegrees*Math.PI/180),l=2/(a+s),u=2/(i+o);return t[0]=l,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=u,t[6]=0,t[7]=0,t[8]=-((a-s)*l*.5),t[9]=(i-o)*u*.5,t[10]=n/(r-n),t[11]=-1,t[12]=0,t[13]=0,t[14]=n*r/(r-n),t[15]=0,t},i.ortho=function(t,e,r,n,i,o,a){var s=1/(e-r),l=1/(n-i),u=1/(o-a);return t[0]=-2*s,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=-2*l,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=2*u,t[11]=0,t[12]=(e+r)*s,t[13]=(i+n)*l,t[14]=(a+o)*u,t[15]=1,t},i.lookAt=function(t,e,r,o){var a,s,l,u,c,h,f,d,p,v,m=e[0],g=e[1],y=e[2],b=o[0],x=o[1],_=o[2],w=r[0],M=r[1],k=r[2];return Math.abs(m-w)<n.EPSILON&&Math.abs(g-M)<n.EPSILON&&Math.abs(y-k)<n.EPSILON?i.identity(t):(f=m-w,d=g-M,p=y-k,v=1/Math.sqrt(f*f+d*d+p*p),f*=v,d*=v,p*=v,a=x*p-_*d,s=_*f-b*p,l=b*d-x*f,v=Math.sqrt(a*a+s*s+l*l),v?(v=1/v,a*=v,s*=v,l*=v):(a=0,s=0,l=0),u=d*l-p*s,c=p*a-f*l,h=f*s-d*a,v=Math.sqrt(u*u+c*c+h*h),v?(v=1/v,u*=v,c*=v,h*=v):(u=0,c=0,h=0),t[0]=a,t[1]=u,t[2]=f,t[3]=0,t[4]=s,t[5]=c,t[6]=d,t[7]=0,t[8]=l,t[9]=h,t[10]=p,t[11]=0,t[12]=-(a*m+s*g+l*y),t[13]=-(u*m+c*g+h*y),t[14]=-(f*m+d*g+p*y),t[15]=1,t)},i.str=function(t){return"mat4("+t[0]+", "+t[1]+", "+t[2]+", "+t[3]+", "+t[4]+", "+t[5]+", "+t[6]+", "+t[7]+", "+t[8]+", "+t[9]+", "+t[10]+", "+t[11]+", "+t[12]+", "+t[13]+", "+t[14]+", "+t[15]+")"},i.frob=function(t){return Math.sqrt(Math.pow(t[0],2)+Math.pow(t[1],2)+Math.pow(t[2],2)+Math.pow(t[3],2)+Math.pow(t[4],2)+Math.pow(t[5],2)+Math.pow(t[6],2)+Math.pow(t[7],2)+Math.pow(t[8],2)+Math.pow(t[9],2)+Math.pow(t[10],2)+Math.pow(t[11],2)+Math.pow(t[12],2)+Math.pow(t[13],2)+Math.pow(t[14],2)+Math.pow(t[15],2))},i.add=function(t,e,r){return t[0]=e[0]+r[0],t[1]=e[1]+r[1],t[2]=e[2]+r[2],t[3]=e[3]+r[3],t[4]=e[4]+r[4],t[5]=e[5]+r[5],t[6]=e[6]+r[6],t[7]=e[7]+r[7],t[8]=e[8]+r[8],t[9]=e[9]+r[9],t[10]=e[10]+r[10],t[11]=e[11]+r[11],t[12]=e[12]+r[12],t[13]=e[13]+r[13],t[14]=e[14]+r[14],t[15]=e[15]+r[15],t},i.subtract=function(t,e,r){return t[0]=e[0]-r[0],t[1]=e[1]-r[1],t[2]=e[2]-r[2],t[3]=e[3]-r[3],t[4]=e[4]-r[4],t[5]=e[5]-r[5],t[6]=e[6]-r[6],t[7]=e[7]-r[7],t[8]=e[8]-r[8],t[9]=e[9]-r[9],t[10]=e[10]-r[10],t[11]=e[11]-r[11],t[12]=e[12]-r[12],t[13]=e[13]-r[13],t[14]=e[14]-r[14],t[15]=e[15]-r[15],t},i.sub=i.subtract,i.multiplyScalar=function(t,e,r){return t[0]=e[0]*r,t[1]=e[1]*r,t[2]=e[2]*r,t[3]=e[3]*r,t[4]=e[4]*r,t[5]=e[5]*r,t[6]=e[6]*r,t[7]=e[7]*r,t[8]=e[8]*r,t[9]=e[9]*r,t[10]=e[10]*r,t[11]=e[11]*r,t[12]=e[12]*r,t[13]=e[13]*r,t[14]=e[14]*r,t[15]=e[15]*r,t},i.multiplyScalarAndAdd=function(t,e,r,n){return t[0]=e[0]+r[0]*n,t[1]=e[1]+r[1]*n,t[2]=e[2]+r[2]*n,t[3]=e[3]+r[3]*n,t[4]=e[4]+r[4]*n,t[5]=e[5]+r[5]*n,t[6]=e[6]+r[6]*n,t[7]=e[7]+r[7]*n,t[8]=e[8]+r[8]*n,t[9]=e[9]+r[9]*n,t[10]=e[10]+r[10]*n,t[11]=e[11]+r[11]*n,t[12]=e[12]+r[12]*n,t[13]=e[13]+r[13]*n,t[14]=e[14]+r[14]*n,t[15]=e[15]+r[15]*n,t},i.exactEquals=function(t,e){return t[0]===e[0]&&t[1]===e[1]&&t[2]===e[2]&&t[3]===e[3]&&t[4]===e[4]&&t[5]===e[5]&&t[6]===e[6]&&t[7]===e[7]&&t[8]===e[8]&&t[9]===e[9]&&t[10]===e[10]&&t[11]===e[11]&&t[12]===e[12]&&t[13]===e[13]&&t[14]===e[14]&&t[15]===e[15]},i.equals=function(t,e){var r=t[0],i=t[1],o=t[2],a=t[3],s=t[4],l=t[5],u=t[6],c=t[7],h=t[8],f=t[9],d=t[10],p=t[11],v=t[12],m=t[13],g=t[14],y=t[15],b=e[0],x=e[1],_=e[2],w=e[3],M=e[4],k=e[5],A=e[6],T=e[7],E=e[8],S=e[9],L=e[10],z=e[11],I=e[12],P=e[13],C=e[14],R=e[15];return Math.abs(r-b)<=n.EPSILON*Math.max(1,Math.abs(r),Math.abs(b))&&Math.abs(i-x)<=n.EPSILON*Math.max(1,Math.abs(i),Math.abs(x))&&Math.abs(o-_)<=n.EPSILON*Math.max(1,Math.abs(o),Math.abs(_))&&Math.abs(a-w)<=n.EPSILON*Math.max(1,Math.abs(a),Math.abs(w))&&Math.abs(s-M)<=n.EPSILON*Math.max(1,Math.abs(s),Math.abs(M))&&Math.abs(l-k)<=n.EPSILON*Math.max(1,Math.abs(l),Math.abs(k))&&Math.abs(u-A)<=n.EPSILON*Math.max(1,Math.abs(u),Math.abs(A))&&Math.abs(c-T)<=n.EPSILON*Math.max(1,Math.abs(c),Math.abs(T))&&Math.abs(h-E)<=n.EPSILON*Math.max(1,Math.abs(h),Math.abs(E))&&Math.abs(f-S)<=n.EPSILON*Math.max(1,Math.abs(f),Math.abs(S))&&Math.abs(d-L)<=n.EPSILON*Math.max(1,Math.abs(d),Math.abs(L))&&Math.abs(p-z)<=n.EPSILON*Math.max(1,Math.abs(p),Math.abs(z))&&Math.abs(v-I)<=n.EPSILON*Math.max(1,Math.abs(v),Math.abs(I))&&Math.abs(m-P)<=n.EPSILON*Math.max(1,Math.abs(m),Math.abs(P))&&Math.abs(g-C)<=n.EPSILON*Math.max(1,Math.abs(g),Math.abs(C))&&Math.abs(y-R)<=n.EPSILON*Math.max(1,Math.abs(y),Math.abs(R))},e.exports=i},{"./common.js":364}],369:[function(t,e,r){var 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value")];e=e.concat(a({key:s+"[0]",value:r[0],valueSpec:{zoom:{}},style:t.style,styleSpec:t.styleSpec,objectElementValidators:{zoom:l,value:u}}))}else{var p=!f.property;e=e.concat((p?l:u)({key:s+"[0]",value:r[0],valueSpec:{},style:t.style,styleSpec:t.styleSpec}))}return e=e.concat(o({key:s+"[1]",value:r[1],valueSpec:h,style:t.style,styleSpec:t.styleSpec})),"number"===i(r[0])&&("piecewise-constant"===h.function&&r[0]%1!==0&&e.push(new n(s+"[0]",r[0],"zoom level for piecewise-constant functions must be an integer")),0!==t.arrayIndex&&r[0]<t.array[t.arrayIndex-1][0]&&e.push(new n(s+"[0]",r[0],"array stops must appear in ascending order"))),e}function u(t){var e=[],r=i(t.value);return"number"!==r&&"string"!==r&&"array"!==r&&e.push(new n(t.key,t.value,"property value must be a number, string or array")),e}var c,h=t.valueSpec,f=t.value;return a({key:t.key,value:t.value,valueSpec:t.styleSpec.function,style:t.style,styleSpec:t.styleSpec,objectElementValidators:{stops:e}})}},{"../error/validation_error":376,"../util/get_type":378,"./validate":380,"./validate_array":381,"./validate_number":391,"./validate_object":392}],388:[function(t,e,r){"use strict";var n=t("../error/validation_error"),i=t("./validate_string");e.exports=function(t){var e=t.value,r=t.key,o=i(t);return o.length?o:(-1===e.indexOf("{fontstack}")&&o.push(new n(r,e,'"glyphs" url must include a "{fontstack}" token')),-1===e.indexOf("{range}")&&o.push(new n(r,e,'"glyphs" url must include a "{range}" token')),o)}},{"../error/validation_error":376,"./validate_string":395}],389:[function(t,e,r){"use strict";var n=t("../error/validation_error"),i=t("../util/unbundle_jsonlint"),o=t("./validate_object"),a=t("./validate_filter"),s=t("./validate_paint_property"),l=t("./validate_layout_property"),u=t("../util/extend");e.exports=function(t){var e=[],r=t.value,c=t.key,h=t.style,f=t.styleSpec;r.type||r.ref||e.push(new n(c,r,'either "type" or "ref" is required'));var d=i(r.type),p=i(r.ref);if(r.id)for(var v=0;v<t.arrayIndex;v++){var m=h.layers[v];i(m.id)===i(r.id)&&e.push(new n(c,r.id,'duplicate layer id "%s", previously used at line %d',r.id,m.id.__line__))}if("ref"in r){["type","source","source-layer","filter","layout"].forEach(function(t){t in r&&e.push(new n(c,r[t],'"%s" is prohibited for ref layers',t))});var g;h.layers.forEach(function(t){t.id==p&&(g=t)}),g?g.ref?e.push(new n(c,r.ref,"ref cannot reference another ref layer")):d=i(g.type):e.push(new n(c,r.ref,'ref layer "%s" not found',p))}else if("background"!==d)if(r.source){var y=h.sources[r.source];y?"vector"==y.type&&"raster"==d?e.push(new n(c,r.source,'layer "%s" requires a raster source',r.id)):"raster"==y.type&&"raster"!=d?e.push(new n(c,r.source,'layer "%s" requires a vector source',r.id)):"vector"!=y.type||r["source-layer"]||e.push(new n(c,r,'layer "%s" must specify a "source-layer"',r.id)):e.push(new n(c,r.source,'source "%s" not found',r.source))}else e.push(new n(c,r,'missing required property "source"'));return e=e.concat(o({key:c,value:r,valueSpec:f.layer,style:t.style,styleSpec:t.styleSpec,objectElementValidators:{filter:a,layout:function(t){return o({layer:r,key:t.key,value:t.value,style:t.style,styleSpec:t.styleSpec,objectElementValidators:{"*":function(t){return l(u({layerType:d},t))}}})},paint:function(t){return o({layer:r,key:t.key,value:t.value,style:t.style,styleSpec:t.styleSpec,objectElementValidators:{"*":function(t){return s(u({layerType:d},t))}}})}}}))}},{"../error/validation_error":376,"../util/extend":377,"../util/unbundle_jsonlint":379,"./validate_filter":386,"./validate_layout_property":390,"./validate_object":392,"./validate_paint_property":393}],390:[function(t,e,r){"use strict";var n=t("./validate"),i=t("../error/validation_error");e.exports=function(t){var e=t.key,r=t.style,o=t.styleSpec,a=t.value,s=t.objectKey,l=o["layout_"+t.layerType];if(t.valueSpec||l[s]){var u=[];return"symbol"===t.layerType&&("icon-image"===s&&r&&!r.sprite?u.push(new i(e,a,'use of "icon-image" requires a style "sprite" property')):"text-field"===s&&r&&!r.glyphs&&u.push(new i(e,a,'use of "text-field" requires a style "glyphs" property'))),u.concat(n({key:t.key,value:a,valueSpec:t.valueSpec||l[s],style:r,styleSpec:o}))}return[new i(e,a,'unknown property "%s"',s)]}},{"../error/validation_error":376,"./validate":380}],391:[function(t,e,r){"use strict";var n=t("../util/get_type"),i=t("../error/validation_error");e.exports=function(t){var e=t.key,r=t.value,o=t.valueSpec,a=n(r);return"number"!==a?[new i(e,r,"number expected, %s found",a)]:"minimum"in o&&r<o.minimum?[new i(e,r,"%s is less than the minimum value %s",r,o.minimum)]:"maximum"in o&&r>o.maximum?[new i(e,r,"%s is greater than the maximum value %s",r,o.maximum)]:[]}},{"../error/validation_error":376,"../util/get_type":378}],392:[function(t,e,r){"use strict";var n=t("../error/validation_error"),i=t("../util/get_type"),o=t("./validate");e.exports=function(t){var e=t.key,r=t.value,a=t.valueSpec,s=t.objectElementValidators||{},l=t.style,u=t.styleSpec,c=[],h=i(r);if("object"!==h)return[new n(e,r,"object expected, %s found",h)];for(var f in r){var d=f.split(".")[0],p=a&&(a[d]||a["*"]),v=s[d]||s["*"];p||v?c=c.concat((v||o)({key:(e?e+".":e)+f,value:r[f],valueSpec:p,style:l,styleSpec:u,object:r,objectKey:f})):""!==e&&1!==e.split(".").length&&c.push(new n(e,r[f],'unknown property "%s"',f))}for(d in a)a[d].required&&void 0===a[d].default&&void 0===r[d]&&c.push(new n(e,r,'missing required property "%s"',d));return c}},{"../error/validation_error":376,"../util/get_type":378,"./validate":380}],393:[function(t,e,r){"use strict";var n=t("./validate"),i=t("../error/validation_error");e.exports=function(t){var e=t.key,r=t.style,o=t.styleSpec,a=t.value,s=t.objectKey,l=o["paint_"+t.layerType],u=s.match(/^(.*)-transition$/);return u&&l[u[1]]&&l[u[1]].transition?n({key:e,value:a,valueSpec:o.transition,style:r,styleSpec:o}):t.valueSpec||l[s]?n({key:t.key,value:a,valueSpec:t.valueSpec||l[s],style:r,styleSpec:o}):[new i(e,a,'unknown property "%s"',s)]}},{"../error/validation_error":376,"./validate":380}],394:[function(t,e,r){"use strict";var n=t("../error/validation_error"),i=t("../util/unbundle_jsonlint"),o=t("./validate_object"),a=t("./validate_enum");e.exports=function(t){var e=t.value,r=t.key,s=t.styleSpec,l=t.style;if(!e.type)return[new n(r,e,'"type" is required')];var u=i(e.type);switch(u){case"vector":case"raster":var c=[];if(c=c.concat(o({key:r,value:e,valueSpec:s.source_tile,style:t.style,styleSpec:s})),"url"in e)for(var h in e)["type","url","tileSize"].indexOf(h)<0&&c.push(new n(r+"."+h,e[h],'a source with a "url" property may not include a "%s" property',h));return c;case"geojson":return o({key:r,value:e,valueSpec:s.source_geojson,style:l,styleSpec:s});case"video":return o({key:r,value:e,valueSpec:s.source_video,style:l,styleSpec:s});case"image":return o({key:r,value:e,valueSpec:s.source_image,style:l,styleSpec:s});default:return a({key:r+".type",value:e.type,valueSpec:{values:["vector","raster","geojson","video","image"]},style:l,styleSpec:s})}}},{"../error/validation_error":376,"../util/unbundle_jsonlint":379,"./validate_enum":385,"./validate_object":392}],395:[function(t,e,r){"use strict";var n=t("../util/get_type"),i=t("../error/validation_error");e.exports=function(t){var e=t.value,r=t.key,o=n(e);return"string"!==o?[new i(r,e,"string expected, %s found",o)]:[]}},{"../error/validation_error":376,"../util/get_type":378}],396:[function(t,e,r){"use strict";function n(t,e){e=e||l;var r=[];return r=r.concat(s({key:"",value:t,valueSpec:e.$root,styleSpec:e,style:t,objectElementValidators:{glyphs:u}})),e.$version>7&&t.constants&&(r=r.concat(a({key:"constants",value:t.constants,style:t,styleSpec:e}))),i(r)}function i(t){return[].concat(t).sort(function(t,e){return t.line-e.line})}function o(t){return function(){return i(t.apply(this,arguments))}}var a=t("./validate/validate_constants"),s=t("./validate/validate"),l=t("../reference/latest.min"),u=t("./validate/validate_glyphs_url");n.source=o(t("./validate/validate_source")),n.layer=o(t("./validate/validate_layer")),n.filter=o(t("./validate/validate_filter")),n.paintProperty=o(t("./validate/validate_paint_property")),n.layoutProperty=o(t("./validate/validate_layout_property")),e.exports=n},{"../reference/latest.min":398,"./validate/validate":380,"./validate/validate_constants":384,"./validate/validate_filter":386,"./validate/validate_glyphs_url":388,"./validate/validate_layer":389,"./validate/validate_layout_property":390,"./validate/validate_paint_property":393,"./validate/validate_source":394}],397:[function(t,e,r){e.exports=t("./v8.json")},{"./v8.json":399}],398:[function(t,e,r){e.exports=t("./v8.min.json")},{"./v8.min.json":400}],399:[function(t,e,r){e.exports={$version:8,$root:{version:{required:!0,type:"enum",values:[8],doc:"Stylesheet version number. Must be 8.",example:8},name:{type:"string",doc:"A human-readable name for the style.",example:"Bright"},metadata:{type:"*",doc:"Arbitrary properties useful to track with the stylesheet, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."},center:{type:"array",value:"number",doc:"Default map center in longitude and latitude.  The style center will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:[-73.9749,40.7736]},zoom:{type:"number",doc:"Default zoom level.  The style zoom will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:12.5},bearing:{type:"number","default":0,period:360,units:"degrees",doc:"Default bearing, in degrees.  The style bearing will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:29},pitch:{type:"number","default":0,units:"degrees",doc:"Default pitch, in degrees. Zero is perpendicular to the surface.  The style pitch will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:50},sources:{required:!0,type:"sources",doc:"Data source specifications.",example:{"mapbox-streets":{type:"vector",url:"mapbox://mapbox.mapbox-streets-v6"}}},sprite:{type:"string",doc:"A base URL for retrieving the sprite image and metadata. The extensions `.png`, `.json` and scale factor `@2x.png` will be automatically appended. This property is required if any layer uses the 'sprite-image' layout property.",example:"mapbox://sprites/mapbox/bright-v8"},glyphs:{type:"string",doc:"A URL template for loading signed-distance-field glyph sets in PBF format. The URL must include `{fontstack}` and `{range}` tokens. This property is required if any layer uses the 'text-field' layout property.",example:"mapbox://fonts/mapbox/{fontstack}/{range}.pbf"},transition:{type:"transition",doc:"A global transition definition to use as a default across properties.",example:{duration:300,delay:0}},layers:{required:!0,type:"array",value:"layer",doc:"Layers will be drawn in the order of this array.",example:[{id:"water",source:"mapbox-streets","source-layer":"water",type:"fill",paint:{"fill-color":"#00ffff"}}]}},sources:{"*":{type:"source",doc:"Specification of a data source. For vector and raster sources, either TileJSON or a URL to a TileJSON must be provided. For GeoJSON and video sources, a URL must be provided."}},source:["source_tile","source_geojson","source_video","source_image"],source_tile:{type:{required:!0,type:"enum",values:["vector","raster"],doc:"The data type of the tile source."},url:{type:"string",doc:"A URL to a TileJSON resource. Supported protocols are `http:`, `https:`, and `mapbox://<mapid>`."},tiles:{type:"array",value:"string",doc:"An array of one or more tile source URLs, as in the TileJSON spec."},minzoom:{type:"number","default":0,doc:"Minimum zoom level for which tiles are available, as in the TileJSON spec."},maxzoom:{type:"number","default":22,doc:"Maximum zoom level for which tiles are available, as in the TileJSON spec. Data from tiles at the maxzoom are used when displaying the map at higher zoom levels."},tileSize:{type:"number","default":512,units:"pixels",doc:"The minimum visual size to display tiles for this layer. Only configurable for raster layers."},"*":{type:"*",doc:"Other keys to configure the data source."}},source_geojson:{type:{required:!0,type:"enum",values:["geojson"],doc:"The data type of the GeoJSON source."},data:{type:"*",doc:"A URL to a GeoJSON file, or inline GeoJSON."},maxzoom:{type:"number","default":14,doc:"Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels)."},buffer:{type:"number","default":64,doc:"Tile buffer size on each side (higher means fewer rendering artifacts near tile edges but slower performance)."},tolerance:{type:"number","default":3,doc:"Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance)."},cluster:{type:"boolean","default":!1,doc:"If the data is a collection of point features, setting this to true clusters the points by radius into groups."},clusterRadius:{type:"number","default":400,doc:"Radius of each cluster when clustering points, relative to 4096 tile."},clusterMaxZoom:{type:"number",doc:"Max zoom to cluster points on. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered)."}},source_video:{type:{required:!0,type:"enum",values:["video"],doc:"The data type of the video source."},urls:{required:!0,type:"array",value:"string",doc:"URLs to video content in order of preferred format."},coordinates:{required:!0,doc:"Corners of video specified in longitude, latitude pairs.",type:"array",length:4,value:{type:"array",length:2,value:"number",doc:"A single longitude, latitude pair."}}},source_image:{type:{required:!0,type:"enum",values:["image"],doc:"The data type of the image source."},url:{required:!0,type:"string",doc:"URL that points to an image"},coordinates:{required:!0,doc:"Corners of image specified in longitude, latitude pairs.",type:"array",length:4,value:{type:"array",length:2,value:"number",doc:"A single longitude, latitude pair."}}},layer:{id:{type:"string",doc:"Unique layer name.",required:!0},type:{type:"enum",values:["fill","line","symbol","circle","raster","background"],doc:"Rendering type of this layer."},metadata:{type:"*",doc:"Arbitrary properties useful to track with the layer, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."},ref:{type:"string",doc:"References another layer to copy `type`, `source`, `source-layer`, `minzoom`, `maxzoom`, `filter`, and `layout` properties from. This allows the layers to share processing and be more efficient."},source:{type:"string",doc:"Name of a source description to be used for this layer."},"source-layer":{type:"string",doc:"Layer to use from a vector tile source. Required if the source supports multiple layers."},minzoom:{type:"number",minimum:0,maximum:22,doc:"The minimum zoom level on which the layer gets parsed and appears on."},maxzoom:{type:"number",minimum:0,maximum:22,doc:"The maximum zoom level on which the layer gets parsed and appears on."},interactive:{type:"boolean",doc:"Enable querying of feature data from this layer for interactivity.","default":!1},filter:{type:"filter",doc:"A expression specifying conditions on source features. Only features that match the filter are displayed."},layout:{type:"layout",doc:"Layout properties for the layer."},paint:{type:"paint",doc:"Default paint properties for this layer."},"paint.*":{type:"paint",doc:"Class-specific paint properties for this layer. The class name is the part after the first dot."
+-}},layout:["layout_fill","layout_line","layout_circle","layout_symbol","layout_raster","layout_background"],layout_background:{visibility:{type:"enum","function":"piecewise-constant",values:["visible","none"],"default":"visible",doc:"The display of this layer. `none` hides this layer."}},layout_fill:{visibility:{type:"enum","function":"piecewise-constant",values:["visible","none"],"default":"visible",doc:"The display of this layer. `none` hides this layer."}},layout_circle:{visibility:{type:"enum","function":"piecewise-constant",values:["visible","none"],"default":"visible",doc:"The display of this layer. `none` hides this layer."}},layout_line:{"line-cap":{type:"enum","function":"piecewise-constant",values:["butt","round","square"],"default":"butt",doc:"The display of line endings."},"line-join":{type:"enum","function":"piecewise-constant",values:["bevel","round","miter"],"default":"miter",doc:"The display of lines when joining."},"line-miter-limit":{type:"number","default":2,"function":"interpolated",doc:"Used to automatically convert miter joins to bevel joins for sharp angles.",requires:[{"line-join":"miter"}]},"line-round-limit":{type:"number","default":1.05,"function":"interpolated",doc:"Used to automatically convert round joins to miter joins for shallow angles.",requires:[{"line-join":"round"}]},visibility:{type:"enum","function":"piecewise-constant",values:["visible","none"],"default":"visible",doc:"The display of this layer. `none` hides this layer."}},layout_symbol:{"symbol-placement":{type:"enum","function":"piecewise-constant",values:["point","line"],"default":"point",doc:"Label placement relative to its geometry. `line` can only be used on LineStrings and Polygons."},"symbol-spacing":{type:"number","default":250,minimum:1,"function":"interpolated",units:"pixels",doc:"Distance between two symbol anchors.",requires:[{"symbol-placement":"line"}]},"symbol-avoid-edges":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer."},"icon-allow-overlap":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, the icon will be visible even if it collides with other previously drawn symbols.",requires:["icon-image"]},"icon-ignore-placement":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, other symbols can be visible even if they collide with the icon.",requires:["icon-image"]},"icon-optional":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.",requires:["icon-image","text-field"]},"icon-rotation-alignment":{type:"enum","function":"piecewise-constant",values:["map","viewport"],"default":"viewport",doc:"Orientation of icon when map is rotated.",requires:["icon-image"]},"icon-size":{type:"number","default":1,minimum:0,"function":"interpolated",doc:"Scale factor for icon. 1 is original size, 3 triples the size.",requires:["icon-image"]},"icon-image":{type:"string","function":"piecewise-constant",doc:"A string with {tokens} replaced, referencing the data property to pull from.",tokens:!0},"icon-rotate":{type:"number","default":0,period:360,"function":"interpolated",units:"degrees",doc:"Rotates the icon clockwise.",requires:["icon-image"]},"icon-padding":{type:"number","default":2,minimum:0,"function":"interpolated",units:"pixels",doc:"Size of the additional area around the icon bounding box used for detecting symbol collisions.",requires:["icon-image"]},"icon-keep-upright":{type:"boolean","function":"piecewise-constant","default":!1,doc:"If true, the icon may be flipped to prevent it from being rendered upside-down.",requires:["icon-image",{"icon-rotation-alignment":"map"},{"symbol-placement":"line"}]},"icon-offset":{type:"array",value:"number",length:2,"default":[0,0],"function":"interpolated",doc:"Offset distance of icon from its anchor. 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n(t,e){this.version=1,this.name=null,this.extent=4096,this.length=0,this._pbf=t,this._keys=[],this._values=[],this._features=[],t.readFields(i,this,e),this.length=this._features.length}function i(t,e,r){15===t?e.version=r.readVarint():1===t?e.name=r.readString():5===t?e.extent=r.readVarint():2===t?e._features.push(r.pos):3===t?e._keys.push(r.readString()):4===t&&e._values.push(o(r))}function o(t){for(var e=null,r=t.readVarint()+t.pos;t.pos<r;){var n=t.readVarint()>>3;e=1===n?t.readString():2===n?t.readFloat():3===n?t.readDouble():4===n?t.readVarint64():5===n?t.readVarint():6===n?t.readSVarint():7===n?t.readBoolean():null}return e}var a=t("./vectortilefeature.js");e.exports=n,n.prototype.feature=function(t){if(0>t||t>=this._features.length)throw new Error("feature index out of bounds");this._pbf.pos=this._features[t];var e=this._pbf.readVarint()+this._pbf.pos;return new a(this._pbf,e,this.extent,this._keys,this._values)}},{"./vectortilefeature.js":415}],417:[function(t,e,r){function 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this.geometry},i.prototype.bbox=function(){this.geometry||this.loadGeometry();for(var t=this.geometry,e=1/0,r=-(1/0),n=1/0,i=-(1/0),o=0;o<t.length;o++)for(var a=t[o],s=0;s<a.length;s++){var l=a[s];e=Math.min(e,l.x),r=Math.max(r,l.x),n=Math.min(n,l.y),i=Math.max(i,l.y)}return[e,n,r,i]},i.prototype.toGeoJSON=a.prototype.toGeoJSON},{"point-geometry":404,"vector-tile":413}],419:[function(t,e,r){"use strict";function n(t,e){return t.readFields(i,{layers:[]},e)}function i(t,e,r){3===t&&e.layers.push(f(r,r.readVarint()+r.pos))}function o(t,e){var r;if(void 0!==t.layers)for(r=0;r<t.layers.length;r++)e.writeMessage(3,p,t.layers[r])}function a(t,e){return t.readFields(s,{},e)}function s(t,e,r){1===t?e.string_value=r.readString():2===t?e.float_value=r.readFloat():3===t?e.double_value=r.readDouble():4===t?e.int_value=r.readVarint():5===t?e.uint_value=r.readVarint():6===t?e.sint_value=r.readSVarint():7===t&&(e.bool_value=r.readBoolean())}function l(t,e){void 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r=t.projection,n=t.zoom,o=function(){t.makeProjection(e),t.makePath(),n.scale(r.scale()),n.translate(r.translate()),i.loneUnhover(t.hoverContainer),t.render()};return o}var i=t("../cartesian/graph_interact");e.exports=n},{"../cartesian/graph_interact":598}],622:[function(t,e,r){"use strict";function n(t,e){this.element=t,this.plot=e,this.mouseListener=null,this.wheelListener=null,this.lastInputTime=Date.now(),this.lastPos=[0,0],this.boxEnabled=!1,this.boxStart=[0,0],this.boxEnd=[0,0]}function i(t){var e=t.mouseContainer,r=t.glplot,i=new n(e,r);return i.mouseListener=o(e,function(e,n,o){function a(e,r,n){var o=Math.min(r,n),a=Math.max(r,n);o!==a?(e[0]=o,e[1]=a,i.dataBox=e):(t.selectBox.selectBox=[0,0,1,1],t.glplot.setDirty())}var s=t.xaxis.range,l=t.yaxis.range,u=r.viewBox,c=i.lastPos[0],h=i.lastPos[1];switch(n*=r.pixelRatio,o*=r.pixelRatio,o=u[3]-u[1]-o,t.fullLayout.dragmode){case"zoom":if(e){var f=n/(u[2]-u[0])*(s[1]-s[0])+s[0],d=o/(u[3]-u[1])*(l[1]-l[0])+l[0];i.boxEnabled||(i.boxStart[0]=f,i.boxStart[1]=d),i.boxEnd[0]=f,i.boxEnd[1]=d,i.boxEnabled=!0}else i.boxEnabled&&(a(s,i.boxStart[0],i.boxEnd[0]),a(l,i.boxStart[1],i.boxEnd[1]),i.boxEnabled=!1);break;case"pan":if(i.boxEnabled=!1,e){var p=(c-n)*(s[1]-s[0])/(r.viewBox[2]-r.viewBox[0]),v=(h-o)*(l[1]-l[0])/(r.viewBox[3]-r.viewBox[1]);s[0]+=p,s[1]+=p,l[0]+=v,l[1]+=v,i.lastInputTime=Date.now(),t.cameraChanged()}}i.lastPos[0]=n,i.lastPos[1]=o}),i.wheelListener=a(e,function(e,n){var o=t.xaxis.range,a=t.yaxis.range,s=r.viewBox,l=i.lastPos[0],u=i.lastPos[1];switch(t.fullLayout.dragmode){case"zoom":break;case"pan":var c=Math.exp(.1*n/(s[3]-s[1])),h=l/(s[2]-s[0])*(o[1]-o[0])+o[0],f=u/(s[3]-s[1])*(a[1]-a[0])+a[0];o[0]=(o[0]-h)*c+h,o[1]=(o[1]-h)*c+h,a[0]=(a[0]-f)*c+f,a[1]=(a[1]-f)*c+f,i.lastInputTime=Date.now(),t.cameraChanged()}return!0}),i}var o=t("mouse-change"),a=t("mouse-wheel");e.exports=i},{"mouse-change":421,"mouse-wheel":425}],623:[function(t,e,r){"use strict";function n(t){this.scene=t,this.gl=t.gl,this.pixelRatio=t.pixelRatio,this.screenBox=[0,0,1,1],this.viewBox=[0,0,1,1],this.dataBox=[-1,-1,1,1],this.borderLineEnable=[!1,!1,!1,!1],this.borderLineWidth=[1,1,1,1],this.borderLineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.ticks=[[],[]],this.tickEnable=[!0,!0,!1,!1],this.tickPad=[15,15,15,15],this.tickAngle=[0,0,0,0],this.tickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.tickMarkLength=[0,0,0,0],this.tickMarkWidth=[0,0,0,0],this.tickMarkColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.labels=["x","y"],this.labelEnable=[!0,!0,!1,!1],this.labelAngle=[0,Math.PI/2,0,3*Math.PI/2],this.labelPad=[15,15,15,15],this.labelSize=[12,12],this.labelFont=["sans-serif","sans-serif"],this.labelColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.title="",this.titleEnable=!0,this.titleCenter=[0,0,0,0],this.titleAngle=0,this.titleColor=[0,0,0,1],this.titleFont="sans-serif",this.titleSize=18,this.gridLineEnable=[!0,!0],this.gridLineColor=[[0,0,0,.5],[0,0,0,.5]],this.gridLineWidth=[1,1],this.zeroLineEnable=[!0,!0],this.zeroLineWidth=[1,1],this.zeroLineColor=[[0,0,0,1],[0,0,0,1]],this.borderColor=[0,0,0,0],this.backgroundColor=[0,0,0,0]}function i(t){return new n(t)}var o=t("../../plotly"),a=t("../../lib/html2unicode"),s=t("../../lib/str2rgbarray"),l=n.prototype,u=["xaxis","yaxis"];l.merge=function(t){this.titleEnable=!1,this.backgroundColor=s(t.plot_bgcolor);var e,r,n,i,o,l,c,h,f,d,p;for(d=0;2>d;++d){for(e=u[d],r=t[this.scene[e]._name],n=/Click to enter .+ title/.test(r.title)?"":r.title,p=0;2>=p;p+=2)this.labelEnable[d+p]=!1,this.labels[d+p]=a(n),this.labelColor[d+p]=s(r.titlefont.color),this.labelFont[d+p]=r.titlefont.family,this.labelSize[d+p]=r.titlefont.size,this.labelPad[d+p]=this.getLabelPad(e,r),this.tickEnable[d+p]=!1,this.tickColor[d+p]=s((r.tickfont||{}).color),this.tickAngle[d+p]="auto"===r.tickangle?0:Math.PI*-r.tickangle/180,this.tickPad[d+p]=this.getTickPad(r),this.tickMarkLength[d+p]=0,this.tickMarkWidth[d+p]=r.tickwidth||0,this.tickMarkColor[d+p]=s(r.tickcolor),this.borderLineEnable[d+p]=!1,this.borderLineColor[d+p]=s(r.linecolor),this.borderLineWidth[d+p]=r.linewidth||0;c=this.hasSharedAxis(r),o=this.hasAxisInDfltPos(e,r)&&!c,l=this.hasAxisInAltrPos(e,r)&&!c,i=r.mirror||!1,h=c?-1!==String(i).indexOf("all"):!!i,f=c?"allticks"===i:-1!==String(i).indexOf("ticks"),o?this.labelEnable[d]=!0:l&&(this.labelEnable[d+2]=!0),o?this.tickEnable[d]=r.showticklabels:l&&(this.tickEnable[d+2]=r.showticklabels),(o||h)&&(this.borderLineEnable[d]=r.showline),(l||h)&&(this.borderLineEnable[d+2]=r.showline),(o||f)&&(this.tickMarkLength[d]=this.getTickMarkLength(r)),(l||f)&&(this.tickMarkLength[d+2]=this.getTickMarkLength(r)),this.gridLineEnable[d]=r.showgrid,this.gridLineColor[d]=s(r.gridcolor),this.gridLineWidth[d]=r.gridwidth,this.zeroLineEnable[d]=r.zeroline,this.zeroLineColor[d]=s(r.zerolinecolor),this.zeroLineWidth[d]=r.zerolinewidth}},l.hasSharedAxis=function(t){var e=this.scene,r=o.Plots.getSubplotIds(e.fullLayout,"gl2d"),n=o.Axes.findSubplotsWithAxis(r,t);return 0!==n.indexOf(e.id)},l.hasAxisInDfltPos=function(t,e){var r=e.side;return"xaxis"===t?"bottom"===r:"yaxis"===t?"left"===r:void 0},l.hasAxisInAltrPos=function(t,e){var r=e.side;return"xaxis"===t?"top"===r:"yaxis"===t?"right"===r:void 0},l.getLabelPad=function(t,e){var r=1.5,n=e.titlefont.size,i=e.showticklabels;return"xaxis"===t?"top"===e.side?-10+n*(r+(i?1:0)):-10+n*(r+(i?.5:0)):"yaxis"===t?"right"===e.side?10+n*(r+(i?1:.5)):10+n*(r+(i?.5:0)):void 0},l.getTickPad=function(t){return"outside"===t.ticks?10+t.ticklen:15},l.getTickMarkLength=function(t){if(!t.ticks)return 0;var e=t.ticklen;return"inside"===t.ticks?-e:e},e.exports=i},{"../../lib/html2unicode":566,"../../lib/str2rgbarray":579,"../../plotly":588}],624:[function(t,e,r){"use strict";var n=t("./scene2d"),i=t("../plots"),o=t("../../constants/xmlns_namespaces");r.name="gl2d",r.attr=["xaxis","yaxis"],r.idRoot=["x","y"],r.idRegex={x:/^x([2-9]|[1-9][0-9]+)?$/,y:/^y([2-9]|[1-9][0-9]+)?$/},r.attrRegex={x:/^xaxis([2-9]|[1-9][0-9]+)?$/,y:/^yaxis([2-9]|[1-9][0-9]+)?$/},r.attributes=t("../cartesian/attributes"),r.plot=function(t){for(var e=t._fullLayout,r=t._fullData,o=i.getSubplotIds(e,"gl2d"),a=0;a<o.length;a++){var s=o[a],l=e._plots[s],u=i.getSubplotData(r,"gl2d",s),c=l._scene2d;void 0===c&&(c=new n({id:s,graphDiv:t,container:t.querySelector(".gl-container"),staticPlot:t._context.staticPlot,plotGlPixelRatio:t._context.plotGlPixelRatio},e),l._scene2d=c),c.plot(u,t.calcdata,e,t.layout)}},r.clean=function(t,e,r,n){for(var o=i.getSubplotIds(n,"gl2d"),a=0;a<o.length;a++){var s=o[a],l=n._plots[s];if(l._scene2d){var u=i.getSubplotData(t,"gl2d",s);0===u.length&&(l._scene2d.destroy(),delete n._plots[s])}}},r.toSVG=function(t){for(var e=t._fullLayout,r=i.getSubplotIds(e,"gl2d"),n=0;n<r.length;n++){var a=e._plots[r[n]],s=a._scene2d,l=s.toImage("png"),u=e._glimages.append("svg:image");u.attr({xmlns:o.svg,"xlink:href":l,x:0,y:0,width:"100%",height:"100%",preserveAspectRatio:"none"}),s.destroy()}}},{"../../constants/xmlns_namespaces":555,"../cartesian/attributes":590,"../plots":647,"./scene2d":625}],625:[function(t,e,r){"use strict";function n(t,e){this.container=t.container,this.graphDiv=t.graphDiv,this.pixelRatio=t.plotGlPixelRatio||window.devicePixelRatio,this.id=t.id,this.staticPlot=!!t.staticPlot,this.fullLayout=e,this.updateAxes(e),this.makeFramework(),this.glplotOptions=f(this),this.glplotOptions.merge(e),this.glplot=u(this.glplotOptions),this.camera=d(this),this.traces={},this.spikes=c(this.glplot),this.selectBox=h(this.glplot,{innerFill:!1,outerFill:!0}),this.pickResult=null,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.stopped=!1,this.redraw=this.draw.bind(this),this.redraw()}function i(t,e){for(var r=0;2>r;++r){var n=t[r],i=e[r];if(n.length!==i.length)return!0;for(var o=0;o<n.length;++o)if(n[o].x!==i[o].x)return!0}return!1}var o,a,s=t("../../plots/cartesian/axes"),l=t("../../plots/cartesian/graph_interact"),u=t("gl-plot2d"),c=t("gl-spikes2d"),h=t("gl-select-box"),f=t("./convert"),d=t("./camera"),p=t("../../lib/html2unicode"),v=t("../../lib/show_no_webgl_msg"),m=["xaxis","yaxis"];e.exports=n;var g=n.prototype;g.makeFramework=function(){if(this.staticPlot){if(!a){o=document.createElement("canvas");try{a=o.getContext("webgl",{preserveDrawingBuffer:!0,premultipliedAlpha:!0,antialias:!0})}catch(t){throw new Error(["Error creating static canvas/context for image server"].join(" "));
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h=this.container;h.appendChild(i),h.appendChild(u),h.appendChild(c)},g.toImage=function(t){t||(t="png"),this.stopped=!0,this.staticPlot&&this.container.appendChild(o),this.glplot.setDirty(),this.glplot.draw();var e=this.glplot.gl,r=e.drawingBufferWidth,n=e.drawingBufferHeight;e.bindFramebuffer(e.FRAMEBUFFER,null);var i=new Uint8Array(r*n*4);e.readPixels(0,0,r,n,e.RGBA,e.UNSIGNED_BYTE,i);for(var a=0,s=n-1;s>a;++a,--s)for(var l=0;r>l;++l)for(var u=0;4>u;++u){var c=i[4*(r*a+l)+u];i[4*(r*a+l)+u]=i[4*(r*s+l)+u],i[4*(r*s+l)+u]=c}var h=document.createElement("canvas");h.width=r,h.height=n;var f=h.getContext("2d"),d=f.createImageData(r,n);d.data.set(i),f.putImageData(d,0,0);var p;switch(t){case"jpeg":p=h.toDataURL("image/jpeg");break;case"webp":p=h.toDataURL("image/webp");break;default:p=h.toDataURL("image/png")}return this.staticPlot&&this.container.removeChild(o),p},g.computeTickMarks=function(){this.xaxis._length=this.glplot.viewBox[2]-this.glplot.viewBox[0],this.yaxis._length=this.glplot.viewBox[3]-this.glplot.viewBox[1];for(var t=[s.calcTicks(this.xaxis),s.calcTicks(this.yaxis)],e=0;2>e;++e)for(var r=0;r<t[e].length;++r)t[e][r].text=p(t[e][r].text+"").replace(/\n/g," ");return t},g.updateAxes=function(t){var e=s.subplotMatch,r="xaxis"+this.id.match(e)[1],n="yaxis"+this.id.match(e)[2];this.xaxis=t[r],this.yaxis=t[n]},g.updateFx=function(t){var e=this.fullLayout;e.dragmode=t.dragmode,e.hovermode=t.hovermode};var y=function(t){var e=t.xaxis.range,r=t.yaxis.range;t.graphDiv.layout.xaxis.range=e.slice(0),t.graphDiv.layout.yaxis.range=r.slice(0);var n={lastInputTime:t.camera.lastInputTime};n[t.xaxis._name]=e.slice(),n[t.yaxis._name]=r.slice(),t.graphDiv.emit("plotly_relayout",n)};g.cameraChanged=function(){var t=this.camera,e=this.xaxis.range,r=this.yaxis.range;this.glplot.setDataBox([e[0],r[0],e[1],r[1]]);var n=this.computeTickMarks(),o=this.glplotOptions.ticks;i(n,o)&&(this.glplotOptions.ticks=n,this.glplotOptions.dataBox=t.dataBox,this.glplot.update(this.glplotOptions),y(this))},g.destroy=function(){var t=this.traces;t&&Object.keys(t).map(function(e){t[e].dispose(),delete t[e]}),this.glplot.dispose(),this.staticPlot||this.container.removeChild(this.canvas),this.container.removeChild(this.svgContainer),this.container.removeChild(this.mouseContainer),this.glplot=null,this.stopped=!0},g.plot=function(t,e,r){var n,i,o,a=this.glplot,l=this.pixelRatio;this.fullLayout=r,this.updateAxes(r);var u=r.width,c=r.height,h=0|Math.ceil(l*u),f=0|Math.ceil(l*c),d=this.canvas;for(d.width===h&&d.height===f||(d.width=h,d.height=f),n=0;n<t.length;++n){var p=t[n],v=e[n];o=this.traces[p.uid],o?o.update(p,v):o=p._module.plot(this,p,v),this.traces[p.uid]=o}var g=Object.keys(this.traces);t:for(n=0;n<g.length;++n){for(i=0;i<e.length;++i)if(e[i][0].trace.uid===g[n])continue t;o=this.traces[g[n]],o.dispose(),delete this.traces[g[n]]}var y=this.glplotOptions;y.merge(r),y.screenBox=[0,0,u,c];var b=r._size,x=this.xaxis.domain,_=this.yaxis.domain;y.viewBox=[b.l+x[0]*b.w,b.b+_[0]*b.h,u-b.r-(1-x[1])*b.w,c-b.t-(1-_[1])*b.h],this.mouseContainer.style.width=b.w*(x[1]-x[0])+"px",this.mouseContainer.style.height=b.h*(_[1]-_[0])+"px",this.mouseContainer.height=b.h*(_[1]-_[0]),this.mouseContainer.style.left=b.l+x[0]*b.w+"px",this.mouseContainer.style.top=b.t+(1-_[1])*b.h+"px";var w=this.bounds;for(w[0]=w[1]=1/0,w[2]=w[3]=-(1/0),g=Object.keys(this.traces),n=0;n<g.length;++n){o=this.traces[g[n]];for(var M=0;2>M;++M)w[M]=Math.min(w[M],o.bounds[M]),w[M+2]=Math.max(w[M+2],o.bounds[M+2])}var k;for(n=0;2>n;++n)w[n]>w[n+2]&&(w[n]=-1,w[n+2]=1),k=this[m[n]],k._length=y.viewBox[n+2]-y.viewBox[n],s.doAutoRange(k);y.ticks=this.computeTickMarks();var A=this.xaxis.range,T=this.yaxis.range;y.dataBox=[A[0],T[0],A[1],T[1]],y.merge(r),a.update(y),this.glplot.draw()},g.draw=function(){if(!this.stopped){requestAnimationFrame(this.redraw);var t=this.glplot,e=this.camera,r=e.mouseListener,n=this.fullLayout;this.cameraChanged();var i=r.x*t.pixelRatio,o=this.canvas.height-t.pixelRatio*r.y;if(e.boxEnabled&&"zoom"===n.dragmode)this.selectBox.enabled=!0,this.selectBox.selectBox=[Math.min(e.boxStart[0],e.boxEnd[0]),Math.min(e.boxStart[1],e.boxEnd[1]),Math.max(e.boxStart[0],e.boxEnd[0]),Math.max(e.boxStart[1],e.boxEnd[1])],t.setDirty();else{this.selectBox.enabled=!1;var a=n._size,s=this.xaxis.domain,u=this.yaxis.domain,c=t.pick(i/t.pixelRatio+a.l+s[0]*a.w,o/t.pixelRatio-(a.t+(1-u[1])*a.h));if(c&&n.hovermode){var h=c.object._trace.handlePick(c);if(h&&(!this.lastPickResult||this.lastPickResult.traceUid!==h.trace.uid||this.lastPickResult.dataCoord[0]!==h.dataCoord[0]||this.lastPickResult.dataCoord[1]!==h.dataCoord[1])){var f=h;this.lastPickResult={traceUid:h.trace?h.trace.uid:null,dataCoord:h.dataCoord.slice()},this.spikes.update({center:c.dataCoord}),f.screenCoord=[((t.viewBox[2]-t.viewBox[0])*(c.dataCoord[0]-t.dataBox[0])/(t.dataBox[2]-t.dataBox[0])+t.viewBox[0])/t.pixelRatio,(this.canvas.height-(t.viewBox[3]-t.viewBox[1])*(c.dataCoord[1]-t.dataBox[1])/(t.dataBox[3]-t.dataBox[1])-t.viewBox[1])/t.pixelRatio];var d=f.hoverinfo;if("all"!==d){var p=d.split("+");-1===p.indexOf("x")&&(f.traceCoord[0]=void 0),-1===p.indexOf("y")&&(f.traceCoord[1]=void 0),-1===p.indexOf("z")&&(f.traceCoord[2]=void 0),-1===p.indexOf("text")&&(f.textLabel=void 0),-1===p.indexOf("name")&&(f.name=void 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n=o({center:e.center||[0,0,0],up:e.up||[0,1,0],eye:e.eye||[0,0,10],mode:e.mode||"orbit",distanceLimits:r}),l=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],u=0,c=t.clientWidth,h=t.clientHeight,f={keyBindingMode:"rotate",view:n,element:t,delay:e.delay||16,rotateSpeed:e.rotateSpeed||1,zoomSpeed:e.zoomSpeed||1,translateSpeed:e.translateSpeed||1,flipX:!!e.flipX,flipY:!!e.flipY,modes:n.modes,tick:function(){var e=i(),r=this.delay,o=e-2*r;n.idle(e-r),n.recalcMatrix(o),n.flush(e-(100+2*r));for(var a=!0,s=n.computedMatrix,f=0;16>f;++f)a=a&&l[f]===s[f],l[f]=s[f];var d=t.clientWidth===c&&t.clientHeight===h;return c=t.clientWidth,h=t.clientHeight,a?!d:(u=Math.exp(n.computedRadius[0]),!0)},lookAt:function(t,e,r){n.lookAt(n.lastT(),t,e,r)},rotate:function(t,e,r){n.rotate(n.lastT(),t,e,r)},pan:function(t,e,r){n.pan(n.lastT(),t,e,r)},translate:function(t,e,r){n.translate(n.lastT(),t,e,r)}};Object.defineProperties(f,{matrix:{get:function(){return n.computedMatrix},set:function(t){return 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i=t("right-now"),o=t("3d-view"),a=t("mouse-change"),s=t("mouse-wheel")},{"3d-view":40,"mouse-change":421,"mouse-wheel":425,"right-now":435}],627:[function(t,e,r){"use strict";function n(t,e){for(var r=0;3>r;++r){var n=s[r];e[n]._gd=t}}var i=t("./scene"),o=t("../plots"),a=t("../../constants/xmlns_namespaces"),s=["xaxis","yaxis","zaxis"];r.name="gl3d",r.attr="scene",r.idRoot="scene",r.idRegex=/^scene([2-9]|[1-9][0-9]+)?$/,r.attrRegex=/^scene([2-9]|[1-9][0-9]+)?$/,r.attributes=t("./layout/attributes"),r.layoutAttributes=t("./layout/layout_attributes"),r.supplyLayoutDefaults=t("./layout/defaults"),r.plot=function(t){var e=t._fullLayout,r=t._fullData,a=o.getSubplotIds(e,"gl3d");e._paperdiv.style({width:e.width+"px",height:e.height+"px"}),t._context.setBackground(t,e.paper_bgcolor);for(var s=0;s<a.length;s++){var l=a[s],u=o.getSubplotData(r,"gl3d",l),c=e[l],h=c._scene;void 0===h&&(n(t,c),h=new i({id:l,graphDiv:t,container:t.querySelector(".gl-container"),staticPlot:t._context.staticPlot,plotGlPixelRatio:t._context.plotGlPixelRatio},e),c._scene=h),h.plot(u,e,t.layout)}},r.clean=function(t,e,r,n){for(var i=o.getSubplotIds(n,"gl3d"),a=0;a<i.length;a++){var s=i[a];!e[s]&&n[s]._scene&&n[s]._scene.destroy()}},r.toSVG=function(t){for(var e=t._fullLayout,r=o.getSubplotIds(e,"gl3d"),n=e._size,i=0;i<r.length;i++){var s=e[r[i]],l=s.domain,u=s._scene,c=u.toImage("png"),h=e._glimages.append("svg:image");h.attr({xmlns:a.svg,"xlink:href":c,x:n.l+n.w*l.x[0],y:n.t+n.h*(1-l.y[1]),width:n.w*(l.x[1]-l.x[0]),height:n.h*(l.y[1]-l.y[0]),preserveAspectRatio:"none"}),u.destroy()}},r.cleanId=function(t){if(t.match(/^scene[0-9]*$/)){var e=t.substr(5);return"1"===e&&(e=""),"scene"+e}},r.setConvert=t("./set_convert")},{"../../constants/xmlns_namespaces":555,"../plots":647,"./layout/attributes":628,"./layout/defaults":632,"./layout/layout_attributes":633,"./scene":637,"./set_convert":638}],628:[function(t,e,r){"use strict";e.exports={scene:{valType:"subplotid",dflt:"scene"}}},{}],629:[function(t,e,r){"use strict";var n=t("../../../components/color"),i=t("../../cartesian/layout_attributes"),o=t("../../../lib/extend").extendFlat;e.exports={showspikes:{valType:"boolean",dflt:!0},spikesides:{valType:"boolean",dflt:!0},spikethickness:{valType:"number",min:0,dflt:2},spikecolor:{valType:"color",dflt:n.defaultLine},showbackground:{valType:"boolean",dflt:!1},backgroundcolor:{valType:"color",dflt:"rgba(204, 204, 204, 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204)"}),gridwidth:i.gridwidth,zeroline:i.zeroline,zerolinecolor:i.zerolinecolor,zerolinewidth:i.zerolinewidth}},{"../../../components/color":483,"../../../lib/extend":562,"../../cartesian/layout_attributes":600}],630:[function(t,e,r){"use strict";var n=t("tinycolor2").mix,i=t("../../../lib"),o=t("./axis_attributes"),a=t("../../cartesian/axis_defaults"),s=["xaxis","yaxis","zaxis"],l=function(){},u=13600/187;e.exports=function(t,e,r){function c(t,e){return i.coerce(h,f,o,t,e)}for(var h,f,d=0;d<s.length;d++){var p=s[d];h=t[p]||{},f={_id:p[0]+r.scene,_name:p},e[p]=f=a(h,f,c,{font:r.font,letter:p[0],data:r.data,showGrid:!0,bgColor:r.bgColor}),c("gridcolor",n(f.color,r.bgColor,u).toRgbString()),c("title",p[0]),f.setScale=l,c("showspikes")&&(c("spikesides"),c("spikethickness"),c("spikecolor",f.color)),c("showaxeslabels"),c("showbackground")&&c("backgroundcolor")}}},{"../../../lib":567,"../../cartesian/axis_defaults":592,"./axis_attributes":629,tinycolor2:454}],631:[function(t,e,r){"use strict";function n(){this.bounds=[[-10,-10,-10],[10,10,10]],this.ticks=[[],[],[]],this.tickEnable=[!0,!0,!0],this.tickFont=["sans-serif","sans-serif","sans-serif"],this.tickSize=[12,12,12],this.tickAngle=[0,0,0],this.tickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.tickPad=[18,18,18],this.labels=["x","y","z"],this.labelEnable=[!0,!0,!0],this.labelFont=["Open Sans","Open Sans","Open Sans"],this.labelSize=[20,20,20],this.labelAngle=[0,0,0],this.labelColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.labelPad=[30,30,30],this.lineEnable=[!0,!0,!0],this.lineMirror=[!1,!1,!1],this.lineWidth=[1,1,1],this.lineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.lineTickEnable=[!0,!0,!0],this.lineTickMirror=[!1,!1,!1],this.lineTickLength=[10,10,10],this.lineTickWidth=[1,1,1],this.lineTickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.gridEnable=[!0,!0,!0],this.gridWidth=[1,1,1],this.gridColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.zeroEnable=[!0,!0,!0],this.zeroLineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.zeroLineWidth=[2,2,2],this.backgroundEnable=[!0,!0,!0],this.backgroundColor=[[.8,.8,.8,.5],[.8,.8,.8,.5],[.8,.8,.8,.5]],this._defaultTickPad=l(this.tickPad),this._defaultLabelPad=l(this.labelPad),this._defaultLineTickLength=l(this.lineTickLength)}function i(t){var e=new n;return e.merge(t),e}var o=t("arraytools"),a=t("../../../lib/html2unicode"),s=t("../../../lib/str2rgbarray"),l=o.copy1D,u=["xaxis","yaxis","zaxis"],c=n.prototype;c.merge=function(t){for(var e=this,r=0;3>r;++r){var n=t[u[r]];e.labels[r]=a(n.title),"titlefont"in n&&(n.titlefont.color&&(e.labelColor[r]=s(n.titlefont.color)),n.titlefont.family&&(e.labelFont[r]=n.titlefont.family),n.titlefont.size&&(e.labelSize[r]=n.titlefont.size)),"showline"in n&&(e.lineEnable[r]=n.showline),"linecolor"in n&&(e.lineColor[r]=s(n.linecolor)),"linewidth"in n&&(e.lineWidth[r]=n.linewidth),"showgrid"in n&&(e.gridEnable[r]=n.showgrid),"gridcolor"in n&&(e.gridColor[r]=s(n.gridcolor)),"gridwidth"in n&&(e.gridWidth[r]=n.gridwidth),"log"===n.type?e.zeroEnable[r]=!1:"zeroline"in n&&(e.zeroEnable[r]=n.zeroline),"zerolinecolor"in n&&(e.zeroLineColor[r]=s(n.zerolinecolor)),"zerolinewidth"in n&&(e.zeroLineWidth[r]=n.zerolinewidth),"ticks"in n&&n.ticks?e.lineTickEnable[r]=!0:e.lineTickEnable[r]=!1,"ticklen"in n&&(e.lineTickLength[r]=e._defaultLineTickLength[r]=n.ticklen),"tickcolor"in n&&(e.lineTickColor[r]=s(n.tickcolor)),"tickwidth"in n&&(e.lineTickWidth[r]=n.tickwidth),"tickangle"in n&&(e.tickAngle[r]="auto"===n.tickangle?0:Math.PI*-n.tickangle/180),"showticklabels"in n&&(e.tickEnable[r]=n.showticklabels),"tickfont"in n&&(n.tickfont.color&&(e.tickColor[r]=s(n.tickfont.color)),n.tickfont.family&&(e.tickFont[r]=n.tickfont.family),n.tickfont.size&&(e.tickSize[r]=n.tickfont.size)),"mirror"in n?-1!==["ticks","all","allticks"].indexOf(n.mirror)?(e.lineTickMirror[r]=!0,e.lineMirror[r]=!0):n.mirror===!0?(e.lineTickMirror[r]=!1,e.lineMirror[r]=!0):(e.lineTickMirror[r]=!1,e.lineMirror[r]=!1):e.lineMirror[r]=!1,"showbackground"in n&&n.showbackground!==!1?(e.backgroundEnable[r]=!0,e.backgroundColor[r]=s(n.backgroundcolor)):e.backgroundEnable[r]=!1}},e.exports=i},{"../../../lib/html2unicode":566,"../../../lib/str2rgbarray":579,arraytools:50}],632:[function(t,e,r){"use strict";function n(t,e,r,n){for(var o=r("bgcolor"),l=i.combine(o,n.paper_bgcolor),u=Object.keys(a.camera),c=0;c<u.length;c++)r("camera."+u[c]+".x"),r("camera."+u[c]+".y"),r("camera."+u[c]+".z");var h=!!r("aspectratio.x")&&!!r("aspectratio.y")&&!!r("aspectratio.z"),f=h?"manual":"auto",d=r("aspectmode",f);h||(t.aspectratio=e.aspectratio={x:1,y:1,z:1},"manual"===d&&(e.aspectmode="auto")),s(t,e,{font:n.font,scene:n.id,data:n.fullData,bgColor:l}),r("dragmode",n.getDfltFromLayout("dragmode")),r("hovermode",n.getDfltFromLayout("hovermode"))}var i=t("../../../components/color"),o=t("../../subplot_defaults"),a=t("./layout_attributes"),s=t("./axis_defaults");e.exports=function(t,e,r){function i(e){if(!s){var r=-1!==a[e].values.indexOf(t[e]);return r?t[e]:void 0}}var s=e._has("cartesian")||e._has("geo")||e._has("gl2d")||e._has("pie")||e._has("ternary");o(t,e,r,{type:"gl3d",attributes:a,handleDefaults:n,font:e.font,fullData:r,getDfltFromLayout:i,paper_bgcolor:e.paper_bgcolor})}},{"../../../components/color":483,"../../subplot_defaults":653,"./axis_defaults":630,"./layout_attributes":633}],633:[function(t,e,r){"use strict";function n(t,e,r){return{x:{valType:"number",dflt:t},y:{valType:"number",dflt:e},z:{valType:"number",dflt:r}}}var i=t("./axis_attributes"),o=t("../../../lib/extend").extendFlat;e.exports={bgcolor:{valType:"color",dflt:"rgba(0,0,0,0)"},camera:{up:o(n(0,0,1),{}),center:o(n(0,0,0),{}),eye:o(n(1.25,1.25,1.25),{})},domain:{x:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]},y:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]}},aspectmode:{valType:"enumerated",values:["auto","cube","data","manual"],dflt:"auto"},aspectratio:{x:{valType:"number",min:0},y:{valType:"number",min:0},z:{valType:"number",min:0}},xaxis:i,yaxis:i,zaxis:i,dragmode:{valType:"enumerated",values:["orbit","turntable","zoom","pan"],dflt:"turntable"},hovermode:{valType:"enumerated",values:["closest",!1],dflt:"closest"},_deprecated:{cameraposition:{valType:"info_array"}}}},{"../../../lib/extend":562,"./axis_attributes":629}],634:[function(t,e,r){"use strict";function n(){this.enabled=[!0,!0,!0],this.colors=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.drawSides=[!0,!0,!0],this.lineWidth=[1,1,1]}function i(t){var e=new n;return e.merge(t),e}var o=t("../../../lib/str2rgbarray"),a=["xaxis","yaxis","zaxis"],s=n.prototype;s.merge=function(t){for(var e=0;3>e;++e){var r=t[a[e]];this.enabled[e]=r.showspikes,this.colors[e]=o(r.spikecolor),this.drawSides[e]=r.spikesides,this.lineWidth[e]=r.spikethickness}},e.exports=i},{"../../../lib/str2rgbarray":579}],635:[function(t,e,r){"use strict";function n(t){for(var e=new Array(3),r=0;3>r;++r){for(var n=t[r],i=new Array(n.length),o=0;o<n.length;++o)i[o]=n[o].x;e[r]=i}return e}function i(t){for(var e=t.axesOptions,r=t.glplot.axesPixels,i=t.fullSceneLayout,u=[[],[],[]],c=0;3>c;++c){var h=i[s[c]];if(h._length=(r[c].hi-r[c].lo)*r[c].pixelsPerDataUnit/t.dataScale[c],Math.abs(h._length)===1/0)u[c]=[];else{h.range[0]=r[c].lo/t.dataScale[c],h.range[1]=r[c].hi/t.dataScale[c],h._m=1/(t.dataScale[c]*r[c].pixelsPerDataUnit),h.range[0]===h.range[1]&&(h.range[0]-=1,h.range[1]+=1);var f=h.tickmode;if("auto"===h.tickmode){h.tickmode="linear";var d=h.nticks||o.Lib.constrain(h._length/40,4,9);o.Axes.autoTicks(h,Math.abs(h.range[1]-h.range[0])/d)}for(var p=o.Axes.calcTicks(h),v=0;v<p.length;++v)p[v].x=p[v].x*t.dataScale[c],p[v].text=a(p[v].text);u[c]=p,h.tickmode=f}}e.ticks=u;for(var c=0;3>c;++c){l[c]=.5*(t.glplot.bounds[0][c]+t.glplot.bounds[1][c]);for(var v=0;2>v;++v)e.bounds[v][c]=t.glplot.bounds[v][c]}t.contourLevels=n(u)}e.exports=i;var o=t("../../../plotly"),a=t("../../../lib/html2unicode"),s=["xaxis","yaxis","zaxis"],l=[0,0,0]},{"../../../lib/html2unicode":566,"../../../plotly":588}],636:[function(t,e,r){"use strict";function n(t,e){var r,n,i=[0,0,0,0];for(r=0;4>r;++r)for(n=0;4>n;++n)i[n]+=t[4*r+n]*e[r];return i}function i(t,e){var r=n(t.projection,n(t.view,n(t.model,[e[0],e[1],e[2],1])));return r}e.exports=i},{}],637:[function(t,e,r){"use strict";function n(t){function e(e,r){if("string"==typeof r)return r;var n=t.fullSceneLayout[e];return v.tickText(n,n.c2l(r),"hover").text}var r,n=t.svgContainer,i=t.container.getBoundingClientRect(),o=i.width,a=i.height;n.setAttributeNS(null,"viewBox","0 0 "+o+" "+a),n.setAttributeNS(null,"width",o),n.setAttributeNS(null,"height",a),k(t),t.glplot.axes.update(t.axesOptions);for(var s=Object.keys(t.traces),l=null,u=t.glplot.selection,c=0;c<s.length;++c)r=t.traces[s[c]],r.handlePick(u)&&(l=r),r.setContourLevels&&r.setContourLevels();var h;if(null!==l){var f=x(t.glplot.cameraParams,u.dataCoordinate);r=l.data;var d=r.hoverinfo,p=e("xaxis",u.traceCoordinate[0]),g=e("yaxis",u.traceCoordinate[1]),y=e("zaxis",u.traceCoordinate[2]);if("all"!==d){var b=d.split("+");-1===b.indexOf("x")&&(p=void 0),-1===b.indexOf("y")&&(g=void 0),-1===b.indexOf("z")&&(y=void 0),-1===b.indexOf("text")&&(u.textLabel=void 0),-1===b.indexOf("name")&&(l.name=void 0)}t.fullSceneLayout.hovermode&&m.loneHover({x:(.5+.5*f[0]/f[3])*o,y:(.5-.5*f[1]/f[3])*a,xLabel:p,yLabel:g,zLabel:y,text:u.textLabel,name:l.name,color:l.color},{container:n});var _={points:[{x:p,y:g,z:y,data:r._input,fullData:r,curveNumber:r.index,pointNumber:u.data.index}]};u.buttons&&u.distance<5?t.graphDiv.emit("plotly_click",_):t.graphDiv.emit("plotly_hover",_),h=_}else m.loneUnhover(n),t.graphDiv.emit("plotly_unhover",h)}function i(t,e,r,i){var o={canvas:r,gl:i,container:t.container,axes:t.axesOptions,spikes:t.spikeOptions,pickRadius:10,snapToData:!0,autoScale:!0,autoBounds:!1};if(t.staticMode){if(!h){c=document.createElement("canvas");try{h=c.getContext("webgl",{preserveDrawingBuffer:!0,premultipliedAlpha:!0,antialias:!0})}catch(a){throw new Error("error creating static canvas/context for image server")}}o.pixelRatio=t.pixelRatio,o.gl=h,o.canvas=c}try{t.glplot=f(o)}catch(a){y(t)}var s=function(t){var e={};e[t.id]=u(t.camera),t.saveCamera(t.graphDiv.layout),t.graphDiv.emit("plotly_relayout",e)};if(t.glplot.canvas.addEventListener("mouseup",s.bind(null,t)),t.glplot.canvas.addEventListener("wheel",s.bind(null,t)),t.staticMode||t.glplot.canvas.addEventListener("webglcontextlost",function(t){d.warn("Lost WebGL context."),t.preventDefault()}),!t.camera){var l=t.fullSceneLayout.camera;t.camera=b(t.container,{center:[l.center.x,l.center.y,l.center.z],eye:[l.eye.x,l.eye.y,l.eye.z],up:[l.up.x,l.up.y,l.up.z],zoomMin:.1,zoomMax:100,mode:"orbit"})}return t.glplot.mouseListener.enabled=!1,t.glplot.camera=t.camera,t.glplot.oncontextloss=function(){t.recoverContext()},t.glplot.onrender=n.bind(null,t),t.traces={},!0}function o(t,e){var r=document.createElement("div"),n=t.container;this.graphDiv=t.graphDiv;var o=document.createElementNS("http://www.w3.org/2000/svg","svg");o.style.position="absolute",o.style.top=o.style.left="0px",o.style.width=o.style.height="100%",o.style["z-index"]=20,o.style["pointer-events"]="none",r.appendChild(o),this.svgContainer=o,r.id=t.id,r.style.position="absolute",r.style.top=r.style.left="0px",r.style.width=r.style.height="100%",n.appendChild(r),this.fullLayout=e,this.id=t.id||"scene",this.fullSceneLayout=e[this.id],this.plotArgs=[[],{},{}],this.axesOptions=w(e[this.id]),this.spikeOptions=M(e[this.id]),this.container=r,this.staticMode=!!t.staticPlot,this.pixelRatio=t.plotGlPixelRatio||2,this.dataScale=[1,1,1],this.contourLevels=[[],[],[]],!i(this,e)}function a(t,e,r,n){for(var i,o=0;o<e.length;++o)if(Array.isArray(e[o]))for(var a=0;a<e[o].length;++a)i=t.d2l(e[o][a]),!isNaN(i)&&isFinite(i)&&(n[0][r]=Math.min(n[0][r],i),n[1][r]=Math.max(n[1][r],i));else i=t.d2l(e[o]),!isNaN(i)&&isFinite(i)&&(n[0][r]=Math.min(n[0][r],i),n[1][r]=Math.max(n[1][r],i))}function s(t,e,r){var n=t.fullSceneLayout;a(n.xaxis,e.x,0,r),a(n.yaxis,e.y,1,r),a(n.zaxis,e.z,2,r)}function l(t){return[[t.eye.x,t.eye.y,t.eye.z],[t.center.x,t.center.y,t.center.z],[t.up.x,t.up.y,t.up.z]]}function u(t){return{up:{x:t.up[0],y:t.up[1],z:t.up[2]},center:{x:t.center[0],y:t.center[1],z:t.center[2]},eye:{x:t.eye[0],y:t.eye[1],z:t.eye[2]}}}var c,h,f=t("gl-plot3d"),d=t("../../lib"),p=t("../../plots/plots"),v=t("../../plots/cartesian/axes"),m=t("../../plots/cartesian/graph_interact"),g=t("../../lib/str2rgbarray"),y=t("../../lib/show_no_webgl_msg"),b=t("./camera"),x=t("./project"),_=t("./set_convert"),w=t("./layout/convert"),M=t("./layout/spikes"),k=t("./layout/tick_marks"),A=o.prototype;A.recoverContext=function(){function t(){return r.isContextLost()?void requestAnimationFrame(t):i(e,e.fullLayout,n,r)?void e.plot.apply(e,e.plotArgs):void d.error("Catastrophic and unrecoverable WebGL error. Context lost.")}var e=this,r=this.glplot.gl,n=this.glplot.canvas;this.glplot.dispose(),requestAnimationFrame(t)};var T=["xaxis","yaxis","zaxis"];A.plot=function(t,e,r){if(this.plotArgs=[t,e,r],!this.glplot.contextLost){var n,i,o,a,l,u,c=e[this.id],h=r[this.id];for(c.bgcolor?this.glplot.clearColor=g(c.bgcolor):this.glplot.clearColor=[0,0,0,0],this.glplot.snapToData=!0,this.fullSceneLayout=c,this.glplotLayout=c,this.axesOptions.merge(c),this.spikeOptions.merge(c),this.updateFx(c.dragmode,c.hovermode),this.glplot.update({}),o=0;3>o;++o)l=c[T[o]],_(l);t?Array.isArray(t)||(t=[t]):t=[];var f=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]];for(o=0;o<t.length;++o)n=t[o],n.visible===!0&&s(this,n,f);var d=[1,1,1];for(a=0;3>a;++a)f[0][a]>f[1][a]?d[a]=1:f[1][a]===f[0][a]?d[a]=1:d[a]=1/(f[1][a]-f[0][a]);for(this.dataScale=d,o=0;o<t.length;++o)if(n=t[o],n.visible===!0){if(i=this.traces[n.uid])i.update(n);else{var v=p.getModule(n.type);i=v.plot(this,n),this.traces[n.uid]=i}i.name=n.name}var m=Object.keys(this.traces);t:for(o=0;o<m.length;++o){for(a=0;a<t.length;++a)if(t[a].uid===m[o]&&t[a].visible===!0)continue t;i=this.traces[m[o]],i.dispose(),delete this.traces[m[o]]}var y=[[0,0,0],[0,0,0]],b=[],x={};for(o=0;3>o;++o){if(l=c[T[o]],u=l.type,u in x?(x[u].acc*=d[o],x[u].count+=1):x[u]={acc:d[o],count:1},l.autorange){for(y[0][o]=1/0,y[1][o]=-(1/0),a=0;a<this.glplot.objects.length;++a){var w=this.glplot.objects[a].bounds;y[0][o]=Math.min(y[0][o],w[0][o]/d[o]),y[1][o]=Math.max(y[1][o],w[1][o]/d[o])}if("rangemode"in l&&"tozero"===l.rangemode&&(y[0][o]=Math.min(y[0][o],0),y[1][o]=Math.max(y[1][o],0)),y[0][o]>y[1][o])y[0][o]=-1,y[1][o]=1;else{var M=y[1][o]-y[0][o];y[0][o]-=M/32,y[1][o]+=M/32}}else{var k=c[T[o]].range;y[0][o]=k[0],y[1][o]=k[1]}y[0][o]===y[1][o]&&(y[0][o]-=1,y[1][o]+=1),b[o]=y[1][o]-y[0][o],this.glplot.bounds[0][o]=y[0][o]*d[o],this.glplot.bounds[1][o]=y[1][o]*d[o]}var A=[1,1,1];for(o=0;3>o;++o){l=c[T[o]],u=l.type;var E=x[u];A[o]=Math.pow(E.acc,1/E.count)/d[o]}var S,L=4;if("auto"===c.aspectmode)S=Math.max.apply(null,A)/Math.min.apply(null,A)<=L?A:[1,1,1];else if("cube"===c.aspectmode)S=[1,1,1];else if("data"===c.aspectmode)S=A;else{if("manual"!==c.aspectmode)throw new Error("scene.js aspectRatio was not one of the enumerated types");var z=c.aspectratio;S=[z.x,z.y,z.z]}c.aspectratio.x=h.aspectratio.x=S[0],c.aspectratio.y=h.aspectratio.y=S[1],c.aspectratio.z=h.aspectratio.z=S[2],this.glplot.aspect=S;var I=c.domain||null,P=e._size||null;if(I&&P){var C=this.container.style;C.position="absolute",C.left=P.l+I.x[0]*P.w+"px",C.top=P.t+(1-I.y[1])*P.h+"px",C.width=P.w*(I.x[1]-I.x[0])+"px",C.height=P.h*(I.y[1]-I.y[0])+"px"}this.glplot.redraw()}},A.destroy=function(){this.glplot.dispose(),this.container.parentNode.removeChild(this.container),this.glplot=null},A.setCameraToDefault=function(){this.setCamera({eye:{x:1.25,y:1.25,z:1.25},center:{x:0,y:0,z:0},up:{x:0,y:0,z:1}})},A.getCamera=function(){return this.glplot.camera.view.recalcMatrix(this.camera.view.lastT()),u(this.glplot.camera)},A.setCamera=function(t){var e={};e[this.id]=t,this.glplot.camera.lookAt.apply(this,l(t)),this.graphDiv.emit("plotly_relayout",e)},A.saveCamera=function(t){function e(t,e,r,n){var i=["up","center","eye"],o=["x","y","z"];return e[i[r]]&&t[i[r]][o[n]]===e[i[r]][o[n]]}var r=this.getCamera(),n=d.nestedProperty(t,this.id+".camera"),i=n.get(),o=!1;if(void 0===i)o=!0;else for(var a=0;3>a;a++)for(var s=0;3>s;s++)if(!e(r,i,a,s)){o=!0;break}return o&&n.set(r),o},A.updateFx=function(t,e){var r=this.camera;r&&("orbit"===t?(r.mode="orbit",r.keyBindingMode="rotate"):"turntable"===t?(r.up=[0,0,1],r.mode="turntable",r.keyBindingMode="rotate"):r.keyBindingMode=t),this.fullSceneLayout.hovermode=e},A.toImage=function(t){t||(t="png"),this.staticMode&&this.container.appendChild(c),this.glplot.redraw();var e=this.glplot.gl,r=e.drawingBufferWidth,n=e.drawingBufferHeight;e.bindFramebuffer(e.FRAMEBUFFER,null);var i=new Uint8Array(r*n*4);e.readPixels(0,0,r,n,e.RGBA,e.UNSIGNED_BYTE,i);for(var o=0,a=n-1;a>o;++o,--a)for(var s=0;r>s;++s)for(var l=0;4>l;++l){var u=i[4*(r*o+s)+l];i[4*(r*o+s)+l]=i[4*(r*a+s)+l],i[4*(r*a+s)+l]=u}var h=document.createElement("canvas");h.width=r,h.height=n;var f=h.getContext("2d"),d=f.createImageData(r,n);d.data.set(i),f.putImageData(d,0,0);var p;switch(t){case"jpeg":p=h.toDataURL("image/jpeg");break;case"webp":p=h.toDataURL("image/webp");break;default:p=h.toDataURL("image/png")}return this.staticMode&&this.container.removeChild(c),p},e.exports=o},{"../../lib":567,"../../lib/show_no_webgl_msg":577,"../../lib/str2rgbarray":579,"../../plots/cartesian/axes":591,"../../plots/cartesian/graph_interact":598,"../../plots/plots":647,"./camera":626,"./layout/convert":631,"./layout/spikes":634,"./layout/tick_marks":635,"./project":636,"./set_convert":638,"gl-plot3d":189}],638:[function(t,e,r){"use strict";var n=t("../cartesian/axes"),i=function(){};e.exports=function(t){n.setConvert(t),t.setScale=i}},{"../cartesian/axes":591}],639:[function(t,e,r){"use strict";var n=t("../plotly"),i=t("./font_attributes"),o=t("../components/color/attributes"),a=n.Lib.extendFlat;e.exports={font:{family:a({},i.family,{dflt:'"Open Sans", verdana, arial, sans-serif'}),size:a({},i.size,{dflt:12}),color:a({},i.color,{dflt:o.defaultLine})},title:{valType:"string",dflt:"Click to enter Plot 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+-dflt:!1},showlegend:{valType:"boolean"},_composedModules:{"*":"Fx"},_nestedModules:{xaxis:"Axes",yaxis:"Axes",scene:"gl3d",geo:"geo",legend:"Legend",annotations:"Annotations",shapes:"Shapes",images:"Images",updatemenus:"UpdateMenus",ternary:"ternary",mapbox:"mapbox"}}},{"../components/color/attributes":482,"../plotly":588,"./font_attributes":609}],640:[function(t,e,r){"use strict";e.exports={styleUrlPrefix:"mapbox://styles/mapbox/",styleUrlSuffix:"v9",controlContainerClassName:"mapboxgl-control-container",noAccessTokenErrorMsg:["Missing Mapbox access token.","Mapbox trace type require a Mapbox access token to be registered.","For example:","  Plotly.plot(gd, data, layout, { mapboxAccessToken: 'my-access-token' });","More info here: https://www.mapbox.com/help/define-access-token/"].join("\n"),mapOnErrorMsg:"Mapbox error."}},{}],641:[function(t,e,r){"use strict";var n=t("../../lib");e.exports=function(t,e){var r=t.split(" "),i=r[0],o=r[1],a=Array.isArray(e)?n.mean(e):e,s=.5+a/100,l=1.5+a/100,u=["",""],c=[0,0];switch(i){case"top":u[0]="top",c[1]=-l;break;case"bottom":u[0]="bottom",c[1]=l}switch(o){case"left":u[1]="right",c[0]=-s;break;case"right":u[1]="left",c[0]=s}var h;return h=u[0]&&u[1]?u.join("-"):u[0]?u[0]:u[1]?u[1]:"center",{anchor:h,offset:c}}},{"../../lib":567}],642:[function(t,e,r){"use strict";function n(t,e){for(var r=[],n=0;n<t.length;n++){var i=t[n],o=i[0].trace;o.subplot===e&&r.push(i)}return r}function i(t,e){for(var r=t._fullLayout,n=t._context,i=n.mapboxAccessToken,o=0;o<e.length;o++){var a=r[e[o]];if(a.accesstoken){i=a.accesstoken;break}}if(!i)throw new Error(u.noAccessTokenErrorMsg);return i}var o=t("mapbox-gl"),a=t("../plots"),s=t("../../constants/xmlns_namespaces"),l=t("./mapbox"),u=t("./constants");r.name="mapbox",r.attr="subplot",r.idRoot="mapbox",r.idRegex=/^mapbox([2-9]|[1-9][0-9]+)?$/,r.attrRegex=/^mapbox([2-9]|[1-9][0-9]+)?$/,r.attributes={subplot:{valType:"subplotid",dflt:"mapbox"}},r.layoutAttributes=t("./layout_attributes"),r.supplyLayoutDefaults=t("./layout_defaults"),r.plot=function(t){var e=t._fullLayout,r=t.calcdata,s=a.getSubplotIds(e,"mapbox"),u=i(t,s);o.accessToken=u;for(var c=0;c<s.length;c++){var h=s[c],f=n(r,h),d=e[h],p=d._subplot;d.accesstoken=u,p||(p=l({gd:t,container:e._glcontainer.node(),id:h,fullLayout:e,staticPlot:t._context.staticPlot}),e[h]._subplot=p),p.plot(f,e,t._promises)}},r.clean=function(t,e,r,n){for(var i=a.getSubplotIds(n,"mapbox"),o=0;o<i.length;o++){var s=i[o];!e[s]&&n[s]._subplot&&n[s]._subplot.destroy()}},r.toSVG=function(t){for(var e=t._fullLayout,r=a.getSubplotIds(e,"mapbox"),n=e._size,i=0;i<r.length;i++){var o=e[r[i]],l=o.domain,u=o._subplot,c=u.toImage("png"),h=e._glimages.append("svg:image");h.attr({xmlns:s.svg,"xlink:href":c,x:n.l+n.w*l.x[0],y:n.t+n.h*(1-l.y[1]),width:n.w*(l.x[1]-l.x[0]),height:n.h*(l.y[1]-l.y[0]),preserveAspectRatio:"none"}),u.destroy()}}},{"../../constants/xmlns_namespaces":555,"../plots":647,"./constants":640,"./layout_attributes":644,"./layout_defaults":645,"./mapbox":646,"mapbox-gl":260}],643:[function(t,e,r){"use strict";function n(t,e){this.mapbox=t,this.map=t.map,this.uid=t.uid+"-layer"+e,this.idSource=this.uid+"-source",this.idLayer=this.uid+"-layer",this.sourceType=null,this.source=null,this.layerType=null,this.below=null,this.visible=!1}function i(t){var e=t.source;return s.isPlainObject(e)||"string"==typeof e&&e.length>0}function o(t){var e={},r={};switch(t.type){case"circle":s.extendFlat(r,{"circle-radius":t.circle.radius,"circle-color":t.color,"circle-opacity":t.opacity});break;case"line":s.extendFlat(r,{"line-width":t.line.width,"line-color":t.color,"line-opacity":t.opacity});break;case"fill":s.extendFlat(r,{"fill-color":t.color,"fill-outline-color":t.fill.outlinecolor,"fill-opacity":t.opacity});break;case"symbol":var n=t.symbol,i=l(n.textposition,n.iconsize);s.extendFlat(e,{"icon-image":n.icon+"-15","icon-size":n.iconsize/10,"text-field":n.text,"text-size":n.textfont.size,"text-anchor":i.anchor,"text-offset":i.offset}),s.extendFlat(r,{"icon-color":t.color,"text-color":n.textfont.color,"text-opacity":t.opacity})}return{layout:e,paint:r}}function a(t){var e,r=t.sourcetype,n=t.source,i={type:r},o="string"==typeof n;return"geojson"===r?e="data":"vector"===r&&(e=o?"url":"tiles"),i[e]=n,i}var 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b=Math.min(h.width-h.margin.left-h.margin.right,h.height-h.margin.top-h.margin.bottom)/2;b=Math.max(10,b);var x,_=[h.margin.left+b,h.margin.top+b];if(p){var w=i.max(o.util.sumArrays(o.util.arrayLast(d).r[0],o.util.arrayLast(g)));x=[0,w]}else x=i.extent(o.util.flattenArray(d.map(function(t,e){return t.r})));h.radialAxis.domain!=o.DATAEXTENT&&(x[0]=0),n=i.scale.linear().domain(h.radialAxis.domain!=o.DATAEXTENT&&h.radialAxis.domain?h.radialAxis.domain:x).range([0,b]),c.layout.radialAxis.domain=n.domain();var M,k=o.util.flattenArray(d.map(function(t,e){return t.t})),A="string"==typeof k[0];A&&(k=o.util.deduplicate(k),M=k.slice(),k=i.range(k.length),d=d.map(function(t,e){var r=t;return t.t=[k],p&&(r.yStack=t.yStack),r}));var 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tt=i.max(N.selectAll(".angular-tick text")[0].map(function(t,e){return t.getCTM().e+t.getBBox().width}));j.attr({transform:"translate("+[b+tt,h.margin.top]+")"});var et=e.select("g.geometry-group").selectAll("g").size()>0,rt=e.select("g.geometry-group").selectAll("g.geometry").data(d);if(rt.enter().append("g").attr({"class":function(t,e){return"geometry geometry"+e}}),rt.exit().remove(),d[0]||et){var nt=[];d.forEach(function(t,e){var r={};r.radialScale=n,r.angularScale=s,r.container=rt.filter(function(t,r){return r==e}),r.geometry=t.geometry,r.orientation=h.orientation,r.direction=h.direction,r.index=e,nt.push({data:t,geometryConfig:r})});var it=i.nest().key(function(t,e){return"undefined"!=typeof t.data.groupId||"unstacked"}).entries(nt),ot=[];it.forEach(function(t,e){"unstacked"===t.key?ot=ot.concat(t.values.map(function(t,e){return[t]})):ot.push(t.values)}),ot.forEach(function(t,e){var r;r=Array.isArray(t)?t[0].geometryConfig.geometry:t.geometryConfig.geometry;var 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r=o.util.getMousePos(Z).radius;pt.attr({r:r}).style({opacity:.5}),st=n.invert(o.util.getMousePos(Z).radius);var i=o.util.convertToCartesian(r,h.radialAxis.orientation);ht.text(o.util.round(st)).move([i[0]+_[0],i[1]+_[1]])}).on("mouseout.radial-guide",function(t,e){pt.style({opacity:0}),ft.hide(),ct.hide(),ht.hide()}),e.selectAll(".geometry-group .mark").on("mouseover.tooltip",function(t,r){var n=i.select(this),a=n.style("fill"),s="black",l=n.style("opacity")||1;if(n.attr({"data-opacity":l}),"none"!=a){n.attr({"data-fill":a}),s=i.hsl(a).darker().toString(),n.style({fill:s,opacity:1});var u={t:o.util.round(t[0]),r:o.util.round(t[1])};A&&(u.t=M[t[0]]);var c="t: "+u.t+", r: "+u.r,h=this.getBoundingClientRect(),f=e.node().getBoundingClientRect(),d=[h.left+h.width/2-G[0]-f.left,h.top+h.height/2-G[1]-f.top];ft.config({color:s}).text(c),ft.move(d)}else 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f=i(l.position,l.delaunayColor,l.delaunayAxis);f.opacity=t.opacity,this.delaunayMesh?this.delaunayMesh.update(f):(f.gl=a,this.delaunayMesh=m(f),this.scene.glplot.add(this.delaunayMesh))}else this.delaunayMesh&&(this.scene.glplot.remove(this.delaunayMesh),this.delaunayMesh.dispose(),this.delaunayMesh=null)},A.dispose=function(){this.linePlot&&(this.scene.glplot.remove(this.linePlot),this.linePlot.dispose()),this.scatterPlot&&(this.scene.glplot.remove(this.scatterPlot),this.scatterPlot.dispose()),this.errorBars&&(this.scene.glplot.remove(this.errorBars),this.errorBars.dispose()),this.textMarkers&&(this.scene.glplot.remove(this.textMarkers),this.textMarkers.dispose()),this.delaunayMesh&&(this.scene.glplot.remove(this.delaunayMesh),this.delaunayMesh.dispose())},e.exports=f},{"../../constants/gl3d_dashes":553,"../../constants/gl_markers":554,"../../lib":567,"../../lib/gl_format_color":565,"../../lib/str2rgbarray":579,"../scatter/make_bubble_size_func":763,"./calc_errors":773,"delaunay-triangulate":120,"gl-error3d":127,"gl-line3d":133,"gl-mesh3d":156,"gl-scatter3d":199}],775:[function(t,e,r){"use strict";function n(t,e,r){var n=0,i=r("x"),o=r("y"),a=r("z");return 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y="projection."+m[g];f(y+".show")&&(f(y+".opacity"),f(y+".scale"))}u(t,e,r,{axis:"z"}),u(t,e,r,{axis:"y",inherit:"z"}),u(t,e,r,{axis:"x",inherit:"z"})}},{"../../components/errorbars/defaults":511,"../../lib":567,"../scatter/line_defaults":760,"../scatter/marker_defaults":764,"../scatter/subtypes":768,"../scatter/text_defaults":769,"./attributes":771}],776:[function(t,e,r){"use strict";var n={};n.plot=t("./convert"),n.attributes=t("./attributes"),n.markerSymbols=t("../../constants/gl_markers"),n.supplyDefaults=t("./defaults"),n.colorbar=t("../scatter/colorbar"),n.calc=t("./calc"),n.moduleType="trace",n.name="scatter3d",n.basePlotModule=t("../../plots/gl3d"),n.categories=["gl3d","symbols","markerColorscale","showLegend"],n.meta={},e.exports=n},{"../../constants/gl_markers":554,"../../plots/gl3d":627,"../scatter/colorbar":752,"./attributes":771,"./calc":772,"./convert":774,"./defaults":775}],777:[function(t,e,r){"use strict";var n=t("../scatter/attributes"),i=t("../../plots/attributes"),o=t("../../components/colorscale/color_attributes"),a=t("../../lib/extend").extendFlat,s=n.marker,l=n.line,u=s.line;e.exports={lon:{valType:"data_array"},lat:{valType:"data_array"},locations:{valType:"data_array"},locationmode:{valType:"enumerated",values:["ISO-3","USA-states","country names"],
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n={};n.attributes=t("./attributes"),n.supplyDefaults=t("./defaults"),n.colorbar=t("../scatter/colorbar"),n.calc=t("./calc"),n.plot=t("./plot").plot,n.moduleType="trace",n.name="scattergeo",n.basePlotModule=t("../../plots/geo"),n.categories=["geo","symbols","markerColorscale","showLegend"],n.meta={},e.exports=n},{"../../plots/geo":612,"../scatter/colorbar":752,"./attributes":777,"./calc":778,"./defaults":779,"./plot":781}],781:[function(t,e,r){"use strict";function n(t,e,r){function n(t,n){f(t,e,n,r)}var i=t.marker;if(n(t.text,"tx"),n(t.textposition,"tp"),t.textfont&&(n(t.textfont.size,"ts"),n(t.textfont.color,"tc"),n(t.textfont.family,"tf")),i&&i.line){var o=i.line;n(i.opacity,"mo"),n(i.symbol,"mx"),n(i.color,"mc"),n(i.size,"ms"),n(o.color,"mlc"),n(o.width,"mlw")}}function i(t){for(var e=t.lon.length,r=new Array(e),n=0;e>n;n++)r[n]=[t.lon[n],t.lat[n]];return{type:"LineString",coordinates:r,trace:t}}function o(t,e){function r(e){var r=t.mockAxis;return 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i=this["error"+t],o=e["error_"+t.toLowerCase()],s=this["error"+t+"Options"];"x"===t.toLowerCase()&&o.copy_ystyle&&(o=e.error_y),this["hasError"+t]?(s.positions=r,s.errors=n,s.capSize=o.width,s.lineWidth=o.thickness/2,s.color=a(o.color,1,1)):s.positions=new Float32Array(0),i.update(s)},E.expandAxesFast=function(t,e){for(var r,n,i,o=e||10,a=0;2>a;a++)r=this.scene[T[a]],n=r._min,n||(n=[]),n.push({val:t[a],pad:o}),i=r._max,i||(i=[]),i.push({val:t[a+2],pad:o})},E.expandAxesFancy=function(t,e,r){var n=this.scene,i={padded:!0,ppad:r};g.expand(n.xaxis,t,i),g.expand(n.yaxis,e,i)},E.dispose=function(){this.line.dispose(),this.errorX.dispose(),this.errorY.dispose(),this.scatter.dispose(),this.fancyScatter.dispose()},e.exports=c},{"../../components/errorbars":512,"../../constants/gl2d_dashes":552,"../../constants/gl_markers":554,"../../lib":567,"../../lib/gl_format_color":565,"../../lib/str2rgbarray":579,"../../plots/cartesian/axes":591,"../scatter/get_trace_color":757,"../scatter/make_bubble_size_func":763,"../scatter/subtypes":768,"fast-isnumeric":123,"gl-error2d":125,"gl-line2d":131,"gl-scatter2d":196,"gl-scatter2d-fancy":191}],784:[function(t,e,r){"use strict";var n=t("../../lib"),i=t("../scatter/constants"),o=t("../scatter/subtypes"),a=t("../scatter/xy_defaults"),s=t("../scatter/marker_defaults"),l=t("../scatter/line_defaults"),u=t("../scatter/fillcolor_defaults"),c=t("../../components/errorbars/defaults"),h=t("./attributes");e.exports=function(t,e,r,f){function d(r,i){return 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n={};n.attributes=t("./attributes"),n.supplyDefaults=t("./defaults"),n.colorbar=t("../scatter/colorbar"),n.calc=t("../scatter3d/calc"),n.plot=t("./convert"),n.moduleType="trace",n.name="scattergl",n.basePlotModule=t("../../plots/gl2d"),n.categories=["gl2d","symbols","errorBarsOK","markerColorscale","showLegend"],n.meta={},e.exports=n},{"../../plots/gl2d":624,"../scatter/colorbar":752,"../scatter3d/calc":772,"./attributes":782,"./convert":783,"./defaults":784}],786:[function(t,e,r){"use strict";var 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s=t[i]|t[i+1]<<8|t[i+2]<<16;this.words[a]|=s<<o&67108863,this.words[a+1]=s>>>26-o&67108863,o+=24,o>=26&&(o-=26,a++)}return this.strip()},i.prototype._parseHex=function(t,e){this.length=Math.ceil((t.length-e)/6),this.words=new Array(this.length);for(var r=0;r<this.length;r++)this.words[r]=0;for(var n=0,r=t.length-6,i=0;r>=e;r-=6){var a=o(t,r,r+6);this.words[i]|=a<<n&67108863,this.words[i+1]|=a>>>26-n&4194303,n+=24,n>=26&&(n-=26,i++)}if(r+6!==e){var a=o(t,e,r+6);this.words[i]|=a<<n&67108863,this.words[i+1]|=a>>>26-n&4194303}this.strip()},i.prototype._parseBase=function(t,e,r){this.words=[0],this.length=1;for(var n=0,i=1;i<=67108863;i*=e)n++;n--,i=i/e|0;for(var o=t.length-r,s=o%n,l=Math.min(o,o-s)+r,u=0,c=r;c<l;c+=n)u=a(t,c,c+n,e),this.imuln(i),this.words[0]+u<67108864?this.words[0]+=u:this._iaddn(u);if(0!==s){for(var h=1,u=a(t,c,t.length,e),c=0;c<s;c++)h*=e;this.imuln(h),this.words[0]+u<67108864?this.words[0]+=u:this._iaddn(u)}},i.prototype.copy=function(t){t.words=new Array(this.length);for(var e=0;e<this.length;e++)t.words[e]=this.words[e];t.length=this.length,t.sign=this.sign,t.red=this.red},i.prototype.clone=function(){var t=new i(null);return this.copy(t),t},i.prototype.strip=function(){for(;this.length>1&&0===this.words[this.length-1];)this.length--;return this._normSign()},i.prototype._normSign=function(){return 1===this.length&&0===this.words[0]&&(this.sign=!1),this},i.prototype.inspect=function(){return(this.red?"<BN-R: ":"<BN: ")+this.toString(16)+">"};var p=["","0","00","000","0000","00000","000000","0000000","00000000","000000000","0000000000","00000000000","000000000000","0000000000000","00000000000000","000000000000000","0000000000000000","00000000000000000","000000000000000000","0000000000000000000","00000000000000000000","000000000000000000000","0000000000000000000000","00000000000000000000000","000000000000000000000000","0000000000000000000000000"],g=[0,0,25,16,12,11,10,9,8,8,7,7,7,7,6,6,6,6,6,6,6,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5],m=[0,0,33554432,43046721,16777216,48828125,60466176,40353607,16777216,43046721,1e7,19487171,35831808,62748517,7529536,11390625,16777216,24137569,34012224,47045881,64e6,4084101,5153632,6436343,7962624,9765625,11881376,14348907,17210368,20511149,243e5,28629151,33554432,39135393,45435424,52521875,60466176];i.prototype.toString=function(t,e){if(t=t||10,16===t||"hex"===t){for(var n="",i=0,e=0|e||1,o=0,a=0;a<this.length;a++){var s=this.words[a],l=(16777215&(s<<i|o)).toString(16);o=s>>>24-i&16777215,n=0!==o||a!==this.length-1?p[6-l.length]+l+n:l+n,i+=2,i>=26&&(i-=26,a--)}for(0!==o&&(n=o.toString(16)+n);n.length%e!==0;)n="0"+n;return this.sign&&(n="-"+n),n}if(t===(0|t)&&t>=2&&t<=36){var u=g[t],c=m[t],n="",h=this.clone();for(h.sign=!1;0!==h.cmpn(0);){var f=h.modn(c).toString(t);h=h.idivn(c),n=0!==h.cmpn(0)?p[u-f.length]+f+n:f+n}return 0===this.cmpn(0)&&(n="0"+n),this.sign&&(n="-"+n),n}r(!1,"Base should be between 2 and 36")},i.prototype.toJSON=function(){return this.toString(16)},i.prototype.toArray=function(t){this.strip();var e=new Array(this.byteLength());e[0]=0;var r=this.clone();if("le"!==t)for(var n=0;0!==r.cmpn(0);n++){var i=r.andln(255);r.ishrn(8),e[e.length-n-1]=i}else for(var n=0;0!==r.cmpn(0);n++){var i=r.andln(255);r.ishrn(8),e[n]=i}return e},Math.clz32?i.prototype._countBits=function(t){return 32-Math.clz32(t)}:i.prototype._countBits=function(t){var e=t,r=0;return e>=4096&&(r+=13,e>>>=13),e>=64&&(r+=7,e>>>=7),e>=8&&(r+=4,e>>>=4),e>=2&&(r+=2,e>>>=2),r+e},i.prototype._zeroBits=function(t){if(0===t)return 26;var e=t,r=0;return 0===(8191&e)&&(r+=13,e>>>=13),0===(127&e)&&(r+=7,e>>>=7),0===(15&e)&&(r+=4,e>>>=4),0===(3&e)&&(r+=2,e>>>=2),0===(1&e)&&r++,r},i.prototype.bitLength=function(){var t=0,e=this.words[this.length-1],t=this._countBits(e);return 26*(this.length-1)+t},i.prototype.zeroBits=function(){if(0===this.cmpn(0))return 0;for(var t=0,e=0;e<this.length;e++){var r=this._zeroBits(this.words[e]);if(t+=r,26!==r)break}return t},i.prototype.byteLength=function(){return Math.ceil(this.bitLength()/8)},i.prototype.neg=function(){if(0===this.cmpn(0))return this.clone();var t=this.clone();return t.sign=!this.sign,t},i.prototype.ior=function(t){for(this.sign=this.sign||t.sign;this.length<t.length;)this.words[this.length++]=0;for(var e=0;e<t.length;e++)this.words[e]=this.words[e]|t.words[e];return this.strip()},i.prototype.or=function(t){return this.length>t.length?this.clone().ior(t):t.clone().ior(this)},i.prototype.iand=function(t){this.sign=this.sign&&t.sign;var e;e=this.length>t.length?t:this;for(var r=0;r<e.length;r++)this.words[r]=this.words[r]&t.words[r];return this.length=e.length,this.strip()},i.prototype.and=function(t){return this.length>t.length?this.clone().iand(t):t.clone().iand(this)},i.prototype.ixor=function(t){this.sign=this.sign||t.sign;var e,r;this.length>t.length?(e=this,r=t):(e=t,r=this);for(var n=0;n<r.length;n++)this.words[n]=e.words[n]^r.words[n];if(this!==e)for(;n<e.length;n++)this.words[n]=e.words[n];return this.length=e.length,this.strip()},i.prototype.xor=function(t){return this.length>t.length?this.clone().ixor(t):t.clone().ixor(this)},i.prototype.setn=function(t,e){r("number"==typeof t&&t>=0);for(var n=t/26|0,i=t%26;this.length<=n;)this.words[this.length++]=0;return e?this.words[n]=this.words[n]|1<<i:this.words[n]=this.words[n]&~(1<<i),this.strip()},i.prototype.iadd=function(t){if(this.sign&&!t.sign){this.sign=!1;var e=this.isub(t);return this.sign=!this.sign,this._normSign()}if(!this.sign&&t.sign){t.sign=!1;var e=this.isub(t);return t.sign=!0,e._normSign()}var r,n;this.length>t.length?(r=this,n=t):(r=t,n=this);for(var i=0,o=0;o<n.length;o++){var e=r.words[o]+n.words[o]+i;this.words[o]=67108863&e,i=e>>>26}for(;0!==i&&o<r.length;o++){var e=r.words[o]+i;this.words[o]=67108863&e,i=e>>>26}if(this.length=r.length,0!==i)this.words[this.length]=i,this.length++;else if(r!==this)for(;o<r.length;o++)this.words[o]=r.words[o];return this},i.prototype.add=function(t){if(t.sign&&!this.sign){t.sign=!1;var e=this.sub(t);return t.sign=!0,e}if(!t.sign&&this.sign){this.sign=!1;var e=t.sub(this);return this.sign=!0,e}return this.length>t.length?this.clone().iadd(t):t.clone().iadd(this)},i.prototype.isub=function(t){if(t.sign){t.sign=!1;var e=this.iadd(t);return t.sign=!0,e._normSign()}if(this.sign)return this.sign=!1,this.iadd(t),this.sign=!0,this._normSign();var r=this.cmp(t);if(0===r)return this.sign=!1,this.length=1,this.words[0]=0,this;var n,i;r>0?(n=this,i=t):(n=t,i=this);for(var o=0,a=0;a<i.length;a++){var e=n.words[a]-i.words[a]+o;o=e>>26,this.words[a]=67108863&e}for(;0!==o&&a<n.length;a++){var e=n.words[a]+o;o=e>>26,this.words[a]=67108863&e}if(0===o&&a<n.length&&n!==this)for(;a<n.length;a++)this.words[a]=n.words[a];return this.length=Math.max(this.length,a),n!==this&&(this.sign=!0),this.strip()},i.prototype.sub=function(t){return this.clone().isub(t)},i.prototype._smallMulTo=function(t,e){e.sign=t.sign!==this.sign,e.length=this.length+t.length;for(var r=0,n=0;n<e.length-1;n++){for(var i=r>>>26,o=67108863&r,a=Math.min(n,t.length-1),s=Math.max(0,n-this.length+1);s<=a;s++){var l=n-s,u=0|this.words[l],c=0|t.words[s],h=u*c,f=67108863&h;i=i+(h/67108864|0)|0,f=f+o|0,o=67108863&f,i=i+(f>>>26)|0}e.words[n]=o,r=i}return 0!==r?e.words[n]=r:e.length--,e.strip()},i.prototype._bigMulTo=function(t,e){e.sign=t.sign!==this.sign,e.length=this.length+t.length;for(var r=0,n=0,i=0;i<e.length-1;i++){var o=n;n=0;for(var a=67108863&r,s=Math.min(i,t.length-1),l=Math.max(0,i-this.length+1);l<=s;l++){var u=i-l,c=0|this.words[u],h=0|t.words[l],f=c*h,d=67108863&f;o=o+(f/67108864|0)|0,d=d+a|0,a=67108863&d,o=o+(d>>>26)|0,n+=o>>>26,o&=67108863}e.words[i]=a,r=o,o=n}return 0!==r?e.words[i]=r:e.length--,e.strip()},i.prototype.mulTo=function(t,e){var r;return r=this.length+t.length<63?this._smallMulTo(t,e):this._bigMulTo(t,e)},i.prototype.mul=function(t){var e=new i(null);return e.words=new Array(this.length+t.length),this.mulTo(t,e)},i.prototype.imul=function(t){if(0===this.cmpn(0)||0===t.cmpn(0))return this.words[0]=0,this.length=1,this;var e=this.length,r=t.length;this.sign=t.sign!==this.sign,this.length=this.length+t.length,this.words[this.length-1]=0;for(var n=this.length-2;n>=0;n--){for(var i=0,o=0,a=Math.min(n,r-1),s=Math.max(0,n-e+1);s<=a;s++){var l=n-s,u=this.words[l],c=t.words[s],h=u*c,f=67108863&h;i+=h/67108864|0,f+=o,o=67108863&f,i+=f>>>26}this.words[n]=o,this.words[n+1]+=i,i=0}for(var i=0,l=1;l<this.length;l++){var d=this.words[l]+i;this.words[l]=67108863&d,i=d>>>26}return this.strip()},i.prototype.imuln=function(t){r("number"==typeof t);for(var e=0,n=0;n<this.length;n++){var i=this.words[n]*t,o=(67108863&i)+(67108863&e);e>>=26,e+=i/67108864|0,e+=o>>>26,this.words[n]=67108863&o}return 0!==e&&(this.words[n]=e,this.length++),this},i.prototype.muln=function(t){return this.clone().imuln(t)},i.prototype.sqr=function(){return this.mul(this)},i.prototype.isqr=function(){return this.mul(this)},i.prototype.ishln=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=67108863>>>26-e<<26-e;if(0!==e){for(var o=0,a=0;a<this.length;a++){var s=this.words[a]&i,l=this.words[a]-s<<e;this.words[a]=l|o,o=s>>>26-e}o&&(this.words[a]=o,this.length++)}if(0!==n){for(var a=this.length-1;a>=0;a--)this.words[a+n]=this.words[a];for(var a=0;a<n;a++)this.words[a]=0;this.length+=n}return this.strip()},i.prototype.ishrn=function(t,e,n){r("number"==typeof t&&t>=0);var i;i=e?(e-e%26)/26:0;var o=t%26,a=Math.min((t-o)/26,this.length),s=67108863^67108863>>>o<<o,l=n;if(i-=a,i=Math.max(0,i),l){for(var u=0;u<a;u++)l.words[u]=this.words[u];l.length=a}if(0===a);else if(this.length>a){this.length-=a;for(var u=0;u<this.length;u++)this.words[u]=this.words[u+a]}else this.words[0]=0,this.length=1;for(var c=0,u=this.length-1;u>=0&&(0!==c||u>=i);u--){var h=this.words[u];this.words[u]=c<<26-o|h>>>o,c=h&s}return l&&0!==c&&(l.words[l.length++]=c),0===this.length&&(this.words[0]=0,this.length=1),this.strip(),this},i.prototype.shln=function(t){return this.clone().ishln(t)},i.prototype.shrn=function(t){return this.clone().ishrn(t)},i.prototype.testn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n)return!1;var o=this.words[n];return!!(o&i)},i.prototype.imaskn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26;if(r(!this.sign,"imaskn works only with positive numbers"),0!==e&&n++,this.length=Math.min(n,this.length),0!==e){var i=67108863^67108863>>>e<<e;this.words[this.length-1]&=i}return this.strip()},i.prototype.maskn=function(t){return this.clone().imaskn(t)},i.prototype.iaddn=function(t){return r("number"==typeof t),t<0?this.isubn(-t):this.sign?1===this.length&&this.words[0]<t?(this.words[0]=t-this.words[0],this.sign=!1,this):(this.sign=!1,this.isubn(t),this.sign=!0,this):this._iaddn(t)},i.prototype._iaddn=function(t){this.words[0]+=t;for(var e=0;e<this.length&&this.words[e]>=67108864;e++)this.words[e]-=67108864,e===this.length-1?this.words[e+1]=1:this.words[e+1]++;return this.length=Math.max(this.length,e+1),this},i.prototype.isubn=function(t){if(r("number"==typeof t),t<0)return this.iaddn(-t);if(this.sign)return this.sign=!1,this.iaddn(t),this.sign=!0,this;this.words[0]-=t;for(var e=0;e<this.length&&this.words[e]<0;e++)this.words[e]+=67108864,this.words[e+1]-=1;return this.strip()},i.prototype.addn=function(t){return this.clone().iaddn(t)},i.prototype.subn=function(t){return this.clone().isubn(t)},i.prototype.iabs=function(){return this.sign=!1,this},i.prototype.abs=function(){return this.clone().iabs()},i.prototype._ishlnsubmul=function(t,e,n){var i,o=t.length+n;if(this.words.length<o){for(var a=new Array(o),i=0;i<this.length;i++)a[i]=this.words[i];this.words=a}else i=this.length;for(this.length=Math.max(this.length,o);i<this.length;i++)this.words[i]=0;for(var s=0,i=0;i<t.length;i++){var l=this.words[i+n]+s,u=t.words[i]*e;l-=67108863&u,s=(l>>26)-(u/67108864|0),this.words[i+n]=67108863&l}for(;i<this.length-n;i++){var l=this.words[i+n]+s;s=l>>26,this.words[i+n]=67108863&l}if(0===s)return this.strip();r(s===-1),s=0;for(var i=0;i<this.length;i++){var l=-this.words[i]+s;s=l>>26,this.words[i]=67108863&l}return this.sign=!0,this.strip()},i.prototype._wordDiv=function(t,e){var r=this.length-t.length,n=this.clone(),o=t,a=o.words[o.length-1],s=this._countBits(a);r=26-s,0!==r&&(o=o.shln(r),n.ishln(r),a=o.words[o.length-1]);var l,u=n.length-o.length;if("mod"!==e){l=new i(null),l.length=u+1,l.words=new Array(l.length);for(var c=0;c<l.length;c++)l.words[c]=0}var h=n.clone()._ishlnsubmul(o,1,u);h.sign||(n=h,l&&(l.words[u]=1));for(var f=u-1;f>=0;f--){var d=67108864*n.words[o.length+f]+n.words[o.length+f-1];for(d=Math.min(d/a|0,67108863),n._ishlnsubmul(o,d,f);n.sign;)d--,n.sign=!1,n._ishlnsubmul(o,1,f),0!==n.cmpn(0)&&(n.sign=!n.sign);l&&(l.words[f]=d)}return l&&l.strip(),n.strip(),"div"!==e&&0!==r&&n.ishrn(r),{div:l?l:null,mod:n}},i.prototype.divmod=function(t,e){if(r(0!==t.cmpn(0)),this.sign&&!t.sign){var n,o,a=this.neg().divmod(t,e);return"mod"!==e&&(n=a.div.neg()),"div"!==e&&(o=0===a.mod.cmpn(0)?a.mod:t.sub(a.mod)),{div:n,mod:o}}if(!this.sign&&t.sign){var n,a=this.divmod(t.neg(),e);return"mod"!==e&&(n=a.div.neg()),{div:n,mod:a.mod}}return this.sign&&t.sign?this.neg().divmod(t.neg(),e):t.length>this.length||this.cmp(t)<0?{div:new i(0),mod:this}:1===t.length?"div"===e?{div:this.divn(t.words[0]),mod:null}:"mod"===e?{div:null,mod:new i(this.modn(t.words[0]))}:{div:this.divn(t.words[0]),mod:new i(this.modn(t.words[0]))}:this._wordDiv(t,e)},i.prototype.div=function(t){return this.divmod(t,"div").div},i.prototype.mod=function(t){return this.divmod(t,"mod").mod},i.prototype.divRound=function(t){var e=this.divmod(t);if(0===e.mod.cmpn(0))return e.div;var r=e.div.sign?e.mod.isub(t):e.mod,n=t.shrn(1),i=t.andln(1),o=r.cmp(n);return o<0||1===i&&0===o?e.div:e.div.sign?e.div.isubn(1):e.div.iaddn(1)},i.prototype.modn=function(t){r(t<=67108863);for(var e=(1<<26)%t,n=0,i=this.length-1;i>=0;i--)n=(e*n+this.words[i])%t;return n},i.prototype.idivn=function(t){r(t<=67108863);for(var e=0,n=this.length-1;n>=0;n--){var i=this.words[n]+67108864*e;this.words[n]=i/t|0,e=i%t}return this.strip()},i.prototype.divn=function(t){return this.clone().idivn(t)},i.prototype.egcd=function(t){r(!t.sign),r(0!==t.cmpn(0));var e=this,n=t.clone();e=e.sign?e.mod(t):e.clone();for(var o=new i(1),a=new i(0),s=new i(0),l=new i(1),u=0;e.isEven()&&n.isEven();)e.ishrn(1),n.ishrn(1),++u;for(var c=n.clone(),h=e.clone();0!==e.cmpn(0);){for(;e.isEven();)e.ishrn(1),o.isEven()&&a.isEven()?(o.ishrn(1),a.ishrn(1)):(o.iadd(c).ishrn(1),a.isub(h).ishrn(1));for(;n.isEven();)n.ishrn(1),s.isEven()&&l.isEven()?(s.ishrn(1),l.ishrn(1)):(s.iadd(c).ishrn(1),l.isub(h).ishrn(1));e.cmp(n)>=0?(e.isub(n),o.isub(s),a.isub(l)):(n.isub(e),s.isub(o),l.isub(a))}return{a:s,b:l,gcd:n.ishln(u)}},i.prototype._invmp=function(t){r(!t.sign),r(0!==t.cmpn(0));var e=this,n=t.clone();e=e.sign?e.mod(t):e.clone();for(var o=new i(1),a=new i(0),s=n.clone();e.cmpn(1)>0&&n.cmpn(1)>0;){for(;e.isEven();)e.ishrn(1),o.isEven()?o.ishrn(1):o.iadd(s).ishrn(1);for(;n.isEven();)n.ishrn(1),a.isEven()?a.ishrn(1):a.iadd(s).ishrn(1);e.cmp(n)>=0?(e.isub(n),o.isub(a)):(n.isub(e),a.isub(o))}return 0===e.cmpn(1)?o:a},i.prototype.gcd=function(t){if(0===this.cmpn(0))return t.clone();if(0===t.cmpn(0))return this.clone();var e=this.clone(),r=t.clone();e.sign=!1,r.sign=!1;for(var n=0;e.isEven()&&r.isEven();n++)e.ishrn(1),r.ishrn(1);for(;;){for(;e.isEven();)e.ishrn(1);for(;r.isEven();)r.ishrn(1);var i=e.cmp(r);if(i<0){var o=e;e=r,r=o}else if(0===i||0===r.cmpn(1))break;e.isub(r)}return r.ishln(n)},i.prototype.invm=function(t){return this.egcd(t).a.mod(t)},i.prototype.isEven=function(){return 0===(1&this.words[0])},i.prototype.isOdd=function(){return 1===(1&this.words[0])},i.prototype.andln=function(t){return this.words[0]&t},i.prototype.bincn=function(t){r("number"==typeof t);var e=t%26,n=(t-e)/26,i=1<<e;if(this.length<=n){for(var o=this.length;o<n+1;o++)this.words[o]=0;return this.words[n]|=i,this.length=n+1,this}for(var a=i,o=n;0!==a&&o<this.length;o++){var s=this.words[o];s+=a,a=s>>>26,s&=67108863,this.words[o]=s}return 0!==a&&(this.words[o]=a,this.length++),this},i.prototype.cmpn=function(t){var e=t<0;if(e&&(t=-t),this.sign&&!e)return-1;if(!this.sign&&e)return 1;t&=67108863,this.strip();var r;if(this.length>1)r=1;else{var n=this.words[0];r=n===t?0:n<t?-1:1}return this.sign&&(r=-r),r},i.prototype.cmp=function(t){if(this.sign&&!t.sign)return-1;if(!this.sign&&t.sign)return 1;var e=this.ucmp(t);return this.sign?-e:e},i.prototype.ucmp=function(t){if(this.length>t.length)return 1;if(this.length<t.length)return-1;for(var e=0,r=this.length-1;r>=0;r--){var n=this.words[r],i=t.words[r];if(n!==i){n<i?e=-1:n>i&&(e=1);break}}return e},i.red=function(t){return new f(t)},i.prototype.toRed=function(t){return r(!this.red,"Already a number in reduction context"),r(!this.sign,"red works only with positives"),t.convertTo(this)._forceRed(t)},i.prototype.fromRed=function(){return r(this.red,"fromRed works only with numbers in reduction context"),this.red.convertFrom(this)},i.prototype._forceRed=function(t){return this.red=t,this},i.prototype.forceRed=function(t){return r(!this.red,"Already a number in reduction context"),this._forceRed(t)},i.prototype.redAdd=function(t){return r(this.red,"redAdd works only with red numbers"),this.red.add(this,t)},i.prototype.redIAdd=function(t){return r(this.red,"redIAdd works only with red numbers"),this.red.iadd(this,t)},i.prototype.redSub=function(t){return r(this.red,"redSub works only with red numbers"),this.red.sub(this,t)},i.prototype.redISub=function(t){return r(this.red,"redISub works only with red numbers"),this.red.isub(this,t)},i.prototype.redShl=function(t){return r(this.red,"redShl works only with red numbers"),this.red.shl(this,t)},i.prototype.redMul=function(t){return r(this.red,"redMul 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e,r=0,n=0;n<t.length;n++){var i=t.words[n];e=64*i,r+=977*i,e+=r/67108864|0,r&=67108863,t.words[n]=r,r=e}return 0===t.words[t.length-1]&&(t.length--,0===t.words[t.length-1]&&t.length--),t},n(u,s),n(c,s),n(h,s),h.prototype.imulK=function(t){for(var e=0,r=0;r<t.length;r++){var n=19*t.words[r]+e,i=67108863&n;n>>>=26,t.words[r]=i,e=n}return 0!==e&&(t.words[t.length++]=e),t},i._prime=function t(e){if(v[e])return v[e];var t;if("k256"===e)t=new l;else if("p224"===e)t=new u;else if("p192"===e)t=new c;else{if("p25519"!==e)throw new Error("Unknown prime "+e);t=new h}return v[e]=t,t},f.prototype._verify1=function(t){r(!t.sign,"red works only with positives"),r(t.red,"red works only with red numbers")},f.prototype._verify2=function(t,e){r(!t.sign&&!e.sign,"red works only with positives"),r(t.red&&t.red===e.red,"red works only with red numbers")},f.prototype.imod=function(t){return this.prime?this.prime.ireduce(t)._forceRed(this):t.mod(this.m)._forceRed(this)},f.prototype.neg=function(t){var e=t.clone();return e.sign=!e.sign,e.iadd(this.m)._forceRed(this)},f.prototype.add=function(t,e){this._verify2(t,e);var r=t.add(e);return r.cmp(this.m)>=0&&r.isub(this.m),r._forceRed(this)},f.prototype.iadd=function(t,e){this._verify2(t,e);var r=t.iadd(e);return r.cmp(this.m)>=0&&r.isub(this.m),r},f.prototype.sub=function(t,e){this._verify2(t,e);var r=t.sub(e);return r.cmpn(0)<0&&r.iadd(this.m),r._forceRed(this)},f.prototype.isub=function(t,e){this._verify2(t,e);var r=t.isub(e);return r.cmpn(0)<0&&r.iadd(this.m),r},f.prototype.shl=function(t,e){return this._verify1(t),this.imod(t.shln(e))},f.prototype.imul=function(t,e){return this._verify2(t,e),this.imod(t.imul(e))},f.prototype.mul=function(t,e){return this._verify2(t,e),this.imod(t.mul(e))},f.prototype.isqr=function(t){return this.imul(t,t)},f.prototype.sqr=function(t){return this.mul(t,t)},f.prototype.sqrt=function(t){if(0===t.cmpn(0))return t.clone();var e=this.m.andln(3);if(r(e%2===1),3===e){var n=this.m.add(new i(1)).ishrn(2),o=this.pow(t,n);return o}for(var a=this.m.subn(1),s=0;0!==a.cmpn(0)&&0===a.andln(1);)s++,a.ishrn(1);r(0!==a.cmpn(0));var l=new i(1).toRed(this),u=l.redNeg(),c=this.m.subn(1).ishrn(1),h=this.m.bitLength();for(h=new i(2*h*h).toRed(this);0!==this.pow(h,c).cmp(u);)h.redIAdd(u);for(var f=this.pow(h,a),o=this.pow(t,a.addn(1).ishrn(1)),d=this.pow(t,a),p=s;0!==d.cmp(l);){for(var g=d,m=0;0!==g.cmp(l);m++)g=g.redSqr();r(m<p);var v=this.pow(f,new i(1).ishln(p-m-1));o=o.redMul(v),f=v.redSqr(),d=d.redMul(f),p=m}return o},f.prototype.invm=function(t){var e=t._invmp(this.m);return e.sign?(e.sign=!1,this.imod(e).redNeg()):this.imod(e)},f.prototype.pow=function(t,e){var r=[];if(0===e.cmpn(0))return new i(1);for(var n=e.clone();0!==n.cmpn(0);)r.push(n.andln(1)),n.ishrn(1);for(var o=t,a=0;a<r.length&&0===r[a];a++,o=this.sqr(o));if(++a<r.length)for(var n=this.sqr(o);a<r.length;a++,n=this.sqr(n))0!==r[a]&&(o=this.mul(o,n));return o},f.prototype.convertTo=function(t){var e=t.mod(this.m);return e===t?e.clone():e},f.prototype.convertFrom=function(t){var e=t.clone();return e.red=null,e},i.mont=function(t){return new d(t)},n(d,f),d.prototype.convertTo=function(t){return this.imod(t.shln(this.shift))},d.prototype.convertFrom=function(t){var e=this.imod(t.mul(this.rinv));return e.red=null,e},d.prototype.imul=function(t,e){if(0===t.cmpn(0)||0===e.cmpn(0))return t.words[0]=0,t.length=1,t;var r=t.imul(e),n=r.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m),i=r.isub(n).ishrn(this.shift),o=i;return i.cmp(this.m)>=0?o=i.isub(this.m):i.cmpn(0)<0&&(o=i.iadd(this.m)),o._forceRed(this)},d.prototype.mul=function(t,e){if(0===t.cmpn(0)||0===e.cmpn(0))return new i(0)._forceRed(this);var r=t.mul(e),n=r.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m),o=r.isub(n).ishrn(this.shift),a=o;return o.cmp(this.m)>=0?a=o.isub(this.m):o.cmpn(0)<0&&(a=o.iadd(this.m)),a._forceRed(this)},d.prototype.invm=function(t){var 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n=0;n<t.length;n++)r.push([t[n][0]+e,t[n][1],t[n][2]]);return r}var a=t("./clip"),s=t("./feature");e.exports=n},{"./clip":105,"./feature":107}],113:[function(t,e,r){"use strict";function n(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t}function i(t){this.gl=t,this.pixelRatio=1,this.bounds=[[-10,-10,-10],[10,10,10]],this.ticks=[[],[],[]],this.autoTicks=!0,this.tickSpacing=[1,1,1],this.tickEnable=[!0,!0,!0],this.tickFont=["sans-serif","sans-serif","sans-serif"],this.tickSize=[12,12,12],this.tickAngle=[0,0,0],this.tickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.tickPad=[10,10,10],this.lastCubeProps={cubeEdges:[0,0,0],axis:[0,0,0]},this.labels=["x","y","z"],this.labelEnable=[!0,!0,!0],this.labelFont="sans-serif",this.labelSize=[20,20,20],this.labelAngle=[0,0,0],this.labelColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.labelPad=[10,10,10],this.lineEnable=[!0,!0,!0],this.lineMirror=[!1,!1,!1],this.lineWidth=[1,1,1],this.lineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.lineTickEnable=[!0,!0,!0],this.lineTickMirror=[!1,!1,!1],this.lineTickLength=[0,0,0],this.lineTickWidth=[1,1,1],this.lineTickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.gridEnable=[!0,!0,!0],this.gridWidth=[1,1,1],this.gridColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.zeroEnable=[!0,!0,!0],this.zeroLineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.zeroLineWidth=[2,2,2],this.backgroundEnable=[!1,!1,!1],this.backgroundColor=[[.8,.8,.8,.5],[.8,.8,.8,.5],[.8,.8,.8,.5]],this._firstInit=!0,this._text=null,this._lines=null,this._background=c(t)}function o(){this.primalOffset=[0,0,0],this.primalMinor=[0,0,0],this.mirrorOffset=[0,0,0],this.mirrorMinor=[0,0,0]}function a(t,e,r,n,i){for(var o=t.primalOffset,a=t.primalMinor,s=t.mirrorOffset,l=t.mirrorMinor,u=n[e],c=0;c<3;++c)if(e!==c){var h=o,f=s,d=a,p=l;u&1<<c&&(h=s,f=o,d=l,p=a),h[c]=r[0][c],f[c]=r[1][c],i[c]>0?(d[c]=-1,p[c]=0):(d[c]=0,p[c]=1)}}function s(t,e){var r=new i(t);return r.update(e),r}e.exports=s;var l=t("./lib/text.js"),u=t("./lib/lines.js"),c=t("./lib/background.js"),h=t("./lib/cube.js"),f=t("./lib/ticks.js"),d=new Float32Array([1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]),p=i.prototype;p.update=function(t){function e(e,r,n){if(n in t){var i,o=t[n],a=this[n];(e?Array.isArray(o)&&Array.isArray(o[0]):Array.isArray(o))?this[n]=i=[r(o[0]),r(o[1]),r(o[2])]:this[n]=i=[r(o),r(o),r(o)];for(var s=0;s<3;++s)if(i[s]!==a[s])return!0}return!1}t=t||{};var r,n=e.bind(this,!1,Number),i=e.bind(this,!1,Boolean),o=e.bind(this,!1,String),a=e.bind(this,!0,function(t){if(Array.isArray(t)){if(3===t.length)return[+t[0],+t[1],+t[2],1];if(4===t.length)return[+t[0],+t[1],+t[2],+t[3]]}return[0,0,0,1]}),s=!1,c=!1;if("bounds"in t)for(var h=t.bounds,d=0;d<2;++d)for(var p=0;p<3;++p)h[d][p]!==this.bounds[d][p]&&(c=!0),this.bounds[d][p]=h[d][p];if("ticks"in t){r=t.ticks,s=!0,this.autoTicks=!1;for(var d=0;d<3;++d)this.tickSpacing[d]=0}else n("tickSpacing")&&(this.autoTicks=!0,c=!0);if(this._firstInit&&("ticks"in t||"tickSpacing"in t||(this.autoTicks=!0),c=!0,s=!0,this._firstInit=!1),c&&this.autoTicks&&(r=f.create(this.bounds,this.tickSpacing),s=!0),s){for(var d=0;d<3;++d)r[d].sort(function(t,e){return t.x-e.x});f.equal(r,this.ticks)?s=!1:this.ticks=r}i("tickEnable"),o("tickFont")&&(s=!0),n("tickSize"),n("tickAngle"),n("tickPad"),a("tickColor");var g=o("labels");o("labelFont")&&(g=!0),i("labelEnable"),n("labelSize"),n("labelPad"),a("labelColor"),i("lineEnable"),i("lineMirror"),n("lineWidth"),a("lineColor"),i("lineTickEnable"),i("lineTickMirror"),n("lineTickLength"),n("lineTickWidth"),a("lineTickColor"),i("gridEnable"),n("gridWidth"),a("gridColor"),i("zeroEnable"),a("zeroLineColor"),n("zeroLineWidth"),i("backgroundEnable"),a("backgroundColor"),this._text?this._text&&(g||s)&&this._text.update(this.bounds,this.labels,this.labelFont,this.ticks,this.tickFont):this._text=l(this.gl,this.bounds,this.labels,this.labelFont,this.ticks,this.tickFont),this._lines&&s&&(this._lines.dispose(),this._lines=null),this._lines||(this._lines=u(this.gl,this.bounds,this.ticks))};var g=[new o,new o,new o],m=[0,0,0],v={model:d,view:d,projection:d};p.isOpaque=function(){return!0},p.isTransparent=function(){return!1},p.drawTransparent=function(t){};var y=[0,0,0],b=[0,0,0],x=[0,0,0];p.draw=function(t){t=t||v;for(var e=this.gl,r=t.model||d,i=t.view||d,o=t.projection||d,s=this.bounds,l=h(r,i,o,s),u=l.cubeEdges,c=l.axis,f=i[12],p=i[13],_=i[14],w=i[15],M=this.pixelRatio*(o[3]*f+o[7]*p+o[11]*_+o[15]*w)/e.drawingBufferHeight,k=0;k<3;++k)this.lastCubeProps.cubeEdges[k]=u[k],this.lastCubeProps.axis[k]=c[k];for(var A=g,k=0;k<3;++k)a(g[k],k,this.bounds,u,c);for(var e=this.gl,T=m,k=0;k<3;++k)this.backgroundEnable[k]?T[k]=c[k]:T[k]=0;this._background.draw(r,i,o,s,T,this.backgroundColor),this._lines.bind(r,i,o,this);for(var k=0;k<3;++k){var E=[0,0,0];c[k]>0?E[k]=s[1][k]:E[k]=s[0][k];for(var S=0;S<2;++S){var L=(k+1+S)%3,z=(k+1+(1^S))%3;this.gridEnable[L]&&this._lines.drawGrid(L,z,this.bounds,E,this.gridColor[L],this.gridWidth[L]*this.pixelRatio)}for(var S=0;S<2;++S){var L=(k+1+S)%3,z=(k+1+(1^S))%3;this.zeroEnable[z]&&s[0][z]<=0&&s[1][z]>=0&&this._lines.drawZero(L,z,this.bounds,E,this.zeroLineColor[z],this.zeroLineWidth[z]*this.pixelRatio)}}for(var k=0;k<3;++k){this.lineEnable[k]&&this._lines.drawAxisLine(k,this.bounds,A[k].primalOffset,this.lineColor[k],this.lineWidth[k]*this.pixelRatio),this.lineMirror[k]&&this._lines.drawAxisLine(k,this.bounds,A[k].mirrorOffset,this.lineColor[k],this.lineWidth[k]*this.pixelRatio);for(var I=n(y,A[k].primalMinor),C=n(b,A[k].mirrorMinor),P=this.lineTickLength,S=0;S<3;++S){var R=M/r[5*S];I[S]*=P[S]*R,C[S]*=P[S]*R}this.lineTickEnable[k]&&this._lines.drawAxisTicks(k,A[k].primalOffset,I,this.lineTickColor[k],this.lineTickWidth[k]*this.pixelRatio),this.lineTickMirror[k]&&this._lines.drawAxisTicks(k,A[k].mirrorOffset,C,this.lineTickColor[k],this.lineTickWidth[k]*this.pixelRatio)}this._text.bind(r,i,o,this.pixelRatio);for(var k=0;k<3;++k){for(var D=A[k].primalMinor,O=n(x,A[k].primalOffset),S=0;S<3;++S)this.lineTickEnable[k]&&(O[S]+=M*D[S]*Math.max(this.lineTickLength[S],0)/r[5*S]);if(this.tickEnable[k]){for(var S=0;S<3;++S)O[S]+=M*D[S]*this.tickPad[S]/r[5*S];this._text.drawTicks(k,this.tickSize[k],this.tickAngle[k],O,this.tickColor[k])}if(this.labelEnable[k]){for(var S=0;S<3;++S)O[S]+=M*D[S]*this.labelPad[S]/r[5*S];O[k]+=.5*(s[0][k]+s[1][k]),this._text.drawLabel(k,this.labelSize[k],this.labelAngle[k],O,this.labelColor[k])}}},p.dispose=function(){this._text.dispose(),this._lines.dispose(),this._background.dispose(),this._lines=null,this._text=null,this._background=null,this.gl=null}},{"./lib/background.js":114,"./lib/cube.js":115,"./lib/lines.js":116,"./lib/text.js":118,"./lib/ticks.js":119}],114:[function(t,e,r){"use strict";function n(t,e,r,n){this.gl=t,this.buffer=e,this.vao=r,this.shader=n}function i(t){for(var e=[],r=[],i=0,l=0;l<3;++l)for(var u=(l+1)%3,c=(l+2)%3,h=[0,0,0],f=[0,0,0],d=-1;d<=1;d+=2){r.push(i,i+2,i+1,i+1,i+2,i+3),h[l]=d,f[l]=d;for(var p=-1;p<=1;p+=2){h[u]=p;for(var g=-1;g<=1;g+=2)h[c]=g,e.push(h[0],h[1],h[2],f[0],f[1],f[2]),i+=1}var m=u;u=c,c=m}var v=o(t,new Float32Array(e)),y=o(t,new Uint16Array(r),t.ELEMENT_ARRAY_BUFFER),b=a(t,[{buffer:v,type:t.FLOAT,size:3,offset:0,stride:24},{buffer:v,type:t.FLOAT,size:3,offset:12,stride:24}],y),x=s(t);return x.attributes.position.location=0,x.attributes.normal.location=1,new n(t,v,b,x)}e.exports=i;var o=t("gl-buffer"),a=t("gl-vao"),s=t("./shaders").bg,l=n.prototype;l.draw=function(t,e,r,n,i,o){for(var a=!1,s=0;s<3;++s)a=a||i[s];if(a){var l=this.gl;l.enable(l.POLYGON_OFFSET_FILL),l.polygonOffset(1,2),this.shader.bind(),this.shader.uniforms={model:t,view:e,projection:r,bounds:n,enable:i,colors:o},this.vao.bind(),this.vao.draw(this.gl.TRIANGLES,36),l.disable(l.POLYGON_OFFSET_FILL)}},l.dispose=function(){this.vao.dispose(),this.buffer.dispose(),this.shader.dispose()}},{"./shaders":117,"gl-buffer":121,"gl-vao":206}],115:[function(t,e,r){"use strict";function n(t,e,r){for(var n=0;n<4;++n){t[n]=r[12+n];for(var i=0;i<3;++i)t[n]+=e[i]*r[4*i+n]}}function i(t){for(var e=0;e<g.length;++e)if(t=l.positive(t,g[e]),t.length<3)return 0;for(var r=t[0],n=r[0]/r[3],i=r[1]/r[3],o=0,e=1;e+1<t.length;++e){var a=t[e],s=t[e+1],u=a[0]/a[3],c=a[1]/a[3],h=s[0]/s[3],f=s[1]/s[3],d=u-n,p=c-i,m=h-n,v=f-i;o+=Math.abs(d*v-p*m)}return o}function o(t,e,r,o){s(c,e,t),s(c,r,c);for(var l=0,g=0;g<2;++g){d[2]=o[g][2];for(var b=0;b<2;++b){d[1]=o[b][1];for(var x=0;x<2;++x)d[0]=o[x][0],n(h[l],d,c),l+=1}}for(var _=-1,g=0;g<8;++g){for(var w=h[g][3],M=0;M<3;++M)f[g][M]=h[g][M]/w;w<0&&(_<0?_=g:f[g][2]<f[_][2]&&(_=g))}if(_<0){_=0;for(var k=0;k<3;++k){for(var A=(k+2)%3,T=(k+1)%3,E=-1,S=-1,L=0;L<2;++L){var z=L<<k,I=z+(L<<A)+(1-L<<T),C=z+(1-L<<A)+(L<<T);u(f[z],f[I],f[C],p)<0||(L?E=1:S=1)}if(E<0||S<0)S>E&&(_|=1<<k);else{for(var L=0;L<2;++L){var z=L<<k,I=z+(L<<A)+(1-L<<T),C=z+(1-L<<A)+(L<<T),P=i([h[z],h[I],h[C],h[z+(1<<A)+(1<<T)]]);L?E=P:S=P}S>E&&(_|=1<<k)}}}for(var R=7^_,D=-1,g=0;g<8;++g)g!==_&&g!==R&&(D<0?D=g:f[D][1]>f[g][1]&&(D=g));for(var O=-1,g=0;g<3;++g){var F=D^1<<g;if(F!==_&&F!==R){O<0&&(O=F);var T=f[F];T[0]<f[O][0]&&(O=F)}}for(var j=-1,g=0;g<3;++g){var F=D^1<<g;if(F!==_&&F!==R&&F!==O){j<0&&(j=F);var T=f[F];T[0]>f[j][0]&&(j=F)}}var N=m;N[0]=N[1]=N[2]=0,N[a.log2(O^D)]=D&O,N[a.log2(D^j)]=D&j;var B=7^j;B===_||B===R?(B=7^O,N[a.log2(j^B)]=B&j):N[a.log2(O^B)]=B&O;for(var U=v,V=_,k=0;k<3;++k)V&1<<k?U[k]=-1:U[k]=1;return y}e.exports=o;var a=t("bit-twiddle"),s=t("gl-mat4/multiply"),l=(t("gl-mat4/invert"),t("split-polygon")),u=t("robust-orientation"),c=new Array(16),h=(new Array(16),new Array(8)),f=new Array(8),d=new Array(3),p=[0,0,0];!function(){for(var t=0;t<8;++t)h[t]=[1,1,1,1],f[t]=[1,1,1]}();var g=[[0,0,1,0,0],[0,0,-1,1,0],[0,-1,0,1,0],[0,1,0,1,0],[-1,0,0,1,0],[1,0,0,1,0]],m=[1,1,1],v=[0,0,0],y={cubeEdges:m,axis:v}},{"bit-twiddle":49,"gl-mat4/invert":142,"gl-mat4/multiply":144,"robust-orientation":418,"split-polygon":436}],116:[function(t,e,r){"use strict";function n(t){return t[0]=t[1]=t[2]=0,t}function i(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t}function o(t,e,r,n,i,o,a,s){this.gl=t,this.vertBuffer=e,this.vao=r,this.shader=n,this.tickCount=i,this.tickOffset=o,this.gridCount=a,this.gridOffset=s}function a(t,e,r){var n=[],i=[0,0,0],a=[0,0,0],c=[0,0,0],h=[0,0,0];n.push(0,0,1,0,1,1,0,0,-1,0,0,-1,0,1,1,0,1,-1);for(var f=0;f<3;++f){for(var d=n.length/3|0,p=0;p<r[f].length;++p){var g=+r[f][p].x;n.push(g,0,1,g,1,1,g,0,-1,g,0,-1,g,1,1,g,1,-1)}var m=n.length/3|0;i[f]=d,a[f]=m-d;for(var d=n.length/3|0,v=0;v<r[f].length;++v){var g=+r[f][v].x;n.push(g,0,1,g,1,1,g,0,-1,g,0,-1,g,1,1,g,1,-1)}var m=n.length/3|0;c[f]=d,h[f]=m-d}var y=s(t,new Float32Array(n)),b=l(t,[{buffer:y,type:t.FLOAT,size:3,stride:0,offset:0}]),x=u(t);return x.attributes.position.location=0,new o(t,y,b,x,a,i,h,c)}e.exports=a;var s=t("gl-buffer"),l=t("gl-vao"),u=t("./shaders").line,c=[0,0,0],h=[0,0,0],f=[0,0,0],d=[0,0,0],p=[1,1],g=o.prototype;g.bind=function(t,e,r){this.shader.bind(),this.shader.uniforms.model=t,this.shader.uniforms.view=e,this.shader.uniforms.projection=r,p[0]=this.gl.drawingBufferWidth,p[1]=this.gl.drawingBufferHeight,this.shader.uniforms.screenShape=p,this.vao.bind()},g.drawAxisLine=function(t,e,r,o,a){var s=n(h);this.shader.uniforms.majorAxis=h,s[t]=e[1][t]-e[0][t],this.shader.uniforms.minorAxis=s;var l=i(d,r);l[t]+=e[0][t],this.shader.uniforms.offset=l,this.shader.uniforms.lineWidth=a,this.shader.uniforms.color=o;var u=n(f);u[(t+2)%3]=1,this.shader.uniforms.screenAxis=u,this.vao.draw(this.gl.TRIANGLES,6);var u=n(f);u[(t+1)%3]=1,this.shader.uniforms.screenAxis=u,this.vao.draw(this.gl.TRIANGLES,6)},g.drawAxisTicks=function(t,e,r,i,o){if(this.tickCount[t]){var a=n(c);a[t]=1,this.shader.uniforms.majorAxis=a,this.shader.uniforms.offset=e,this.shader.uniforms.minorAxis=r,this.shader.uniforms.color=i,this.shader.uniforms.lineWidth=o;var s=n(f);s[t]=1,this.shader.uniforms.screenAxis=s,this.vao.draw(this.gl.TRIANGLES,this.tickCount[t],this.tickOffset[t])}},g.drawGrid=function(t,e,r,o,a,s){if(this.gridCount[t]){var l=n(h);l[e]=r[1][e]-r[0][e],this.shader.uniforms.minorAxis=l;var u=i(d,o);u[e]+=r[0][e],this.shader.uniforms.offset=u;var p=n(c);p[t]=1,this.shader.uniforms.majorAxis=p;var g=n(f);g[t]=1,this.shader.uniforms.screenAxis=g,this.shader.uniforms.lineWidth=s,this.shader.uniforms.color=a,this.vao.draw(this.gl.TRIANGLES,this.gridCount[t],this.gridOffset[t])}},g.drawZero=function(t,e,r,o,a,s){var l=n(h);this.shader.uniforms.majorAxis=l,l[t]=r[1][t]-r[0][t],this.shader.uniforms.minorAxis=l;var u=i(d,o);u[t]+=r[0][t],this.shader.uniforms.offset=u;var c=n(f);c[e]=1,this.shader.uniforms.screenAxis=c,this.shader.uniforms.lineWidth=s,this.shader.uniforms.color=a,this.vao.draw(this.gl.TRIANGLES,6)},g.dispose=function(){this.vao.dispose(),this.vertBuffer.dispose(),this.shader.dispose()}},{"./shaders":117,"gl-buffer":121,"gl-vao":206}],117:[function(t,e,r){"use strict";var n=t("gl-shader"),i="#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, majorAxis, minorAxis, screenAxis;\nuniform float lineWidth;\nuniform vec2 screenShape;\n\nvec3 project(vec3 p) {\n  vec4 pp = projection * view * model * vec4(p, 1.0);\n  return pp.xyz / max(pp.w, 0.0001);\n}\n\nvoid main() {\n  vec3 major = position.x * majorAxis;\n  vec3 minor = position.y * minorAxis;\n\n  vec3 vPosition = major + minor + offset;\n  vec3 pPosition = project(vPosition);\n  vec3 offset = project(vPosition + screenAxis * position.z);\n\n  vec2 screen = normalize((offset - pPosition).xy * screenShape) / screenShape;\n\n  gl_Position = vec4(pPosition + vec3(0.5 * screen * lineWidth, 0), 1.0);\n}\n",o="precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}";r.line=function(t){return n(t,i,o,null,[{name:"position",type:"vec3"}])};var a="#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, axis;\nuniform float scale, angle, pixelScale;\nuniform vec2 resolution;\n\nvoid main() {  \n  //Compute plane offset\n  vec2 planeCoord = position.xy * pixelScale;\n  mat2 planeXform = scale * mat2(cos(angle), sin(angle),\n                                -sin(angle), cos(angle));\n  vec2 viewOffset = 2.0 * planeXform * planeCoord / resolution;\n\n  //Compute world offset\n  float axisDistance = position.z;\n  vec3 dataPosition = axisDistance * axis + offset;\n  vec4 worldPosition = model * vec4(dataPosition, 1);\n  \n  //Compute clip position\n  vec4 viewPosition = view * worldPosition;\n  vec4 clipPosition = 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a=t("extract-frustum-planes"),s=t("split-polygon"),l=t("./lib/cube.js"),u=t("gl-mat4/multiply"),c=t("gl-mat4/transpose"),h=t("gl-vec4/transformMat4"),f=new Float32Array([1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]),d=new Float32Array(16),p=[0,0,0,1],g=[0,0,0,1],m=[new n(1/0,-(1/0),1/0),new n(1/0,-(1/0),1/0),new n(1/0,-(1/0),1/0)],v=[0,0,0]},{"./lib/cube.js":115,"extract-frustum-planes":97,"gl-mat4/multiply":144,"gl-mat4/transpose":152,"gl-vec4/transformMat4":212,"split-polygon":436}],121:[function(t,e,r){"use strict";function n(t,e,r,n,i){this.gl=t,this.type=e,this.handle=r,this.length=n,this.usage=i}function i(t,e,r,n,i,o){var a=i.length*i.BYTES_PER_ELEMENT;if(o<0)return t.bufferData(e,i,n),a;if(a+o>r)throw new Error("gl-buffer: If resizing buffer, must not specify offset");return t.bufferSubData(e,o,i),r}function o(t,e){for(var r=l.malloc(t.length,e),n=t.length,i=0;i<n;++i)r[i]=t[i];return r}function a(t,e){for(var r=1,n=e.length-1;n>=0;--n){if(e[n]!==r)return!1;r*=t[n]}return!0}function 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X_SHADER",35660:"MAX_VERTEX_TEXTURE_IMAGE_UNITS",35661:"MAX_COMBINED_TEXTURE_IMAGE_UNITS",35663:"SHADER_TYPE",35664:"FLOAT_VEC2",35665:"FLOAT_VEC3",35666:"FLOAT_VEC4",35667:"INT_VEC2",35668:"INT_VEC3",35669:"INT_VEC4",35670:"BOOL",35671:"BOOL_VEC2",35672:"BOOL_VEC3",35673:"BOOL_VEC4",35674:"FLOAT_MAT2",35675:"FLOAT_MAT3",35676:"FLOAT_MAT4",35678:"SAMPLER_2D",35680:"SAMPLER_CUBE",35712:"DELETE_STATUS",35713:"COMPILE_STATUS",35714:"LINK_STATUS",35715:"VALIDATE_STATUS",35716:"INFO_LOG_LENGTH",35717:"ATTACHED_SHADERS",35718:"ACTIVE_UNIFORMS",35719:"ACTIVE_UNIFORM_MAX_LENGTH",35720:"SHADER_SOURCE_LENGTH",35721:"ACTIVE_ATTRIBUTES",35722:"ACTIVE_ATTRIBUTE_MAX_LENGTH",35724:"SHADING_LANGUAGE_VERSION",35725:"CURRENT_PROGRAM",36003:"STENCIL_BACK_REF",36004:"STENCIL_BACK_VALUE_MASK",36005:"STENCIL_BACK_WRITEMASK",36006:"FRAMEBUFFER_BINDING",36007:"RENDERBUFFER_BINDING",36048:"FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE",36049:"FRAMEBUFFER_ATTACHMENT_OBJECT_NAME",36050:"FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL",36051:"FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE",36053:"FRAMEBUFFER_COMPLETE",36054:"FRAMEBUFFER_INCOMPLETE_ATTACHMENT",36055:"FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT",36057:"FRAMEBUFFER_INCOMPLETE_DIMENSIONS",36061:"FRAMEBUFFER_UNSUPPORTED",36064:"COLOR_ATTACHMENT0",36096:"DEPTH_ATTACHMENT",36128:"STENCIL_ATTACHMENT",36160:"FRAMEBUFFER",36161:"RENDERBUFFER",36162:"RENDERBUFFER_WIDTH",36163:"RENDERBUFFER_HEIGHT",36164:"RENDERBUFFER_INTERNAL_FORMAT",36168:"STENCIL_INDEX8",36176:"RENDERBUFFER_RED_SIZE",36177:"RENDERBUFFER_GREEN_SIZE",36178:"RENDERBUFFER_BLUE_SIZE",36179:"RENDERBUFFER_ALPHA_SIZE",36180:"RENDERBUFFER_DEPTH_SIZE",36181:"RENDERBUFFER_STENCIL_SIZE",36194:"RGB565",36336:"LOW_FLOAT",36337:"MEDIUM_FLOAT",36338:"HIGH_FLOAT",36339:"LOW_INT",36340:"MEDIUM_INT",36341:"HIGH_INT",36346:"SHADER_COMPILER",36347:"MAX_VERTEX_UNIFORM_VECTORS",36348:"MAX_VARYING_VECTORS",36349:"MAX_FRAGMENT_UNIFORM_VECTORS",37440:"UNPACK_FLIP_Y_WEBGL",37441:"UNPACK_PREMULTIPLY_ALPHA_WEBGL",37442:"CONTEXT_LOST_WEBGL",37443:"UNPACK_COLORSPACE_CONVERSION_WEBGL",37444:"BROWSER_DEFAULT_WEBGL"}},{}],123:[function(t,e,r){var n=t("./1.0/numbers");e.exports=function(t){return n[t]}},{"./1.0/numbers":122}],124:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.shader=e,this.buffer=r,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.numPoints=0,this.color=[0,0,0,1]}function i(t,e){var r=o(t.gl,l.vertex,l.fragment),i=a(t.gl),s=new n(t,r,i);return s.update(e),t.addObject(s),s}var o=t("gl-shader"),a=t("gl-buffer"),s=t("typedarray-pool"),l=t("./lib/shaders");e.exports=i;var u=[[1,0,0,1,0,0],[1,0,0,-1,0,0],[-1,0,0,-1,0,0],[-1,0,0,-1,0,0],[-1,0,0,1,0,0],[1,0,0,1,0,0],[1,0,-1,0,0,1],[1,0,-1,0,0,-1],[1,0,1,0,0,-1],[1,0,1,0,0,-1],[1,0,1,0,0,1],[1,0,-1,0,0,1],[-1,0,-1,0,0,1],[-1,0,-1,0,0,-1],[-1,0,1,0,0,-1],[-1,0,1,0,0,-1],[-1,0,1,0,0,1],[-1,0,-1,0,0,1],[0,1,1,0,0,0],[0,1,-1,0,0,0],[0,-1,-1,0,0,0],[0,-1,-1,0,0,0],[0,1,1,0,0,0],[0,-1,1,0,0,0],[0,1,0,-1,1,0],[0,1,0,-1,-1,0],[0,1,0,1,-1,0],[0,1,0,1,1,0],[0,1,0,-1,1,0],[0,1,0,1,-1,0],[0,-1,0,-1,1,0],[0,-1,0,-1,-1,0],[0,-1,0,1,-1,0],[0,-1,0,1,1,0],[0,-1,0,-1,1,0],[0,-1,0,1,-1,0]],c=n.prototype;c.draw=function(){var t=[1,0,0,0,1,0,0,0,1],e=[1,1];return function(){var r=this.plot,n=this.shader,i=this.buffer,o=this.bounds,a=this.numPoints;if(a){var s=r.gl,l=r.dataBox,c=r.viewBox,h=r.pixelRatio,f=o[2]-o[0],d=o[3]-o[1],p=l[2]-l[0],g=l[3]-l[1];t[0]=2*f/p,t[4]=2*d/g,t[6]=2*(o[0]-l[0])/p-1,t[7]=2*(o[1]-l[1])/g-1;var m=c[2]-c[0],v=c[3]-c[1];e[0]=2*h/m,e[1]=2*h/v,i.bind(),n.bind(),n.uniforms.viewTransform=t,n.uniforms.pixelScale=e,n.uniforms.color=this.color,n.attributes.position.pointer(s.FLOAT,!1,16,0),n.attributes.pixelOffset.pointer(s.FLOAT,!1,16,8),s.drawArrays(s.TRIANGLES,0,a*u.length)}}}(),c.drawPick=function(t){return t},c.pick=function(t,e){return null},c.update=function(t){t=t||{};var e,r,n,i=t.positions||[],o=t.errors||[],a=1;"lineWidth"in t&&(a=+t.lineWidth);var l=5;"capSize"in t&&(l=+t.capSize),this.color=(t.color||[0,0,0,1]).slice();var c=this.bounds=[1/0,1/0,-(1/0),-(1/0)],h=this.numPoints=i.length>>1;for(e=0;e<h;++e)r=i[2*e],n=i[2*e+1],c[0]=Math.min(r,c[0]),c[1]=Math.min(n,c[1]),c[2]=Math.max(r,c[2]),c[3]=Math.max(n,c[3]);c[2]===c[0]&&(c[2]+=1),c[3]===c[1]&&(c[3]+=1);var f=1/(c[2]-c[0]),d=1/(c[3]-c[1]),p=c[0],g=c[1],m=s.mallocFloat32(h*u.length*4),v=0;for(e=0;e<h;++e){r=i[2*e],n=i[2*e+1];for(var y=o[4*e],b=o[4*e+1],x=o[4*e+2],_=o[4*e+3],w=0;w<u.length;++w){var M=u[w],k=M[0],A=M[1];k<0?k*=y:k>0&&(k*=b),A<0?A*=x:A>0&&(A*=_),m[v++]=f*(r-p+k),m[v++]=d*(n-g+A),m[v++]=a*M[2]+(l+a)*M[4],m[v++]=a*M[3]+(l+a)*M[5]}}this.buffer.update(m),s.free(m)},c.dispose=function(){this.plot.removeObject(this),this.shader.dispose(),this.buffer.dispose()}},{"./lib/shaders":125,"gl-buffer":121,"gl-shader":190,"typedarray-pool":449}],125:[function(t,e,r){e.exports={vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 pixelOffset;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvoid main() {\n  vec3 scrPosition = viewTransform * vec3(position, 1);\n  gl_Position = vec4(\n    scrPosition.xy + scrPosition.z * pixelScale * pixelOffset,\n    0,\n    scrPosition.z);\n}\n",fragment:"precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"}},{}],126:[function(t,e,r){"use strict";function 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s=t("gl-buffer"),l=t("gl-vao"),u=t("./shaders/index"),c=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],h=n.prototype;h.isOpaque=function(){return this.opacity>=1},h.isTransparent=function(){return this.opacity<1},h.drawTransparent=h.draw=function(t){var e=this.gl,r=this.shader.uniforms;this.shader.bind();var n=r.view=t.view||c,i=r.projection=t.projection||c;r.model=t.model||c,r.clipBounds=this.clipBounds,r.opacity=this.opacity;var o=n[12],a=n[13],s=n[14],l=n[15],u=this.pixelRatio*(i[3]*o+i[7]*a+i[11]*s+i[15]*l)/e.drawingBufferHeight;this.vao.bind();for(var h=0;h<3;++h)e.lineWidth(this.lineWidth[h]),r.capSize=this.capSize[h]*u,e.drawArrays(e.LINES,this.lineOffset[h],this.lineCount[h]);this.vao.unbind()};var f=function(){for(var t=new Array(3),e=0;e<3;++e){for(var r=[],n=1;n<=2;++n)for(var i=-1;i<=1;i+=2){var o=(n+e)%3,a=[0,0,0];a[o]=i,r.push(a)}t[e]=r}return t}();h.update=function(t){t=t||{},"lineWidth"in t&&(this.lineWidth=t.lineWidth,Array.isArray(this.lineWidth)||(this.lineWidth=[this.lineWidth,this.lineWidth,this.lineWidth])),"capSize"in t&&(this.capSize=t.capSize,Array.isArray(this.capSize)||(this.capSize=[this.capSize,this.capSize,this.capSize])),"opacity"in t&&(this.opacity=t.opacity);var e=t.color||[[0,0,0],[0,0,0],[0,0,0]],r=t.position,n=t.error;if(Array.isArray(e[0])||(e=[e,e,e]),r&&n){var a=[],s=r.length,l=0;this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.lineCount=[0,0,0];for(var u=0;u<3;++u){this.lineOffset[u]=l;t:for(var c=0;c<s;++c){for(var h=r[c],f=0;f<3;++f)if(isNaN(h[f])||!isFinite(h[f]))continue t;var d=n[c],p=e[u];if(Array.isArray(p[0])&&(p=e[c]),3===p.length&&(p=[p[0],p[1],p[2],1]),!isNaN(d[0][u])&&!isNaN(d[1][u])){if(d[0][u]<0){var g=h.slice();g[u]+=d[0][u],a.push(h[0],h[1],h[2],p[0],p[1],p[2],p[3],0,0,0,g[0],g[1],g[2],p[0],p[1],p[2],p[3],0,0,0),i(this.bounds,g),l+=2+o(a,g,p,u)}if(d[1][u]>0){var g=h.slice();g[u]+=d[1][u],a.push(h[0],h[1],h[2],p[0],p[1],p[2],p[3],0,0,0,g[0],g[1],g[2],p[0],p[1],p[2],p[3],0,0,0),i(this.bounds,g),l+=2+o(a,g,p,u)}}}this.lineCount[u]=l-this.lineOffset[u]}this.buffer.update(a)}},h.dispose=function(){this.shader.dispose(),this.buffer.dispose(),this.vao.dispose()}},{"./shaders/index":127,"gl-buffer":121,"gl-vao":206}],127:[function(t,e,r){"use strict";var n=t("gl-shader"),i="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, offset;\nattribute vec4 color;\nuniform mat4 model, view, projection;\nuniform float capSize;\nvarying vec4 fragColor;\nvarying vec3 fragPosition;\n\nvoid main() {\n  vec4 worldPosition  = model * vec4(position, 1.0);\n  worldPosition       = (worldPosition / worldPosition.w) + vec4(capSize * offset, 0.0);\n  gl_Position         = projection * view * worldPosition;\n  fragColor           = color;\n  fragPosition        = position;\n}",o="precision mediump float;\n#define GLSLIFY 1\nuniform vec3 clipBounds[2];\nuniform float opacity;\nvarying vec3 fragPosition;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(fragPosition, clipBounds[0])) || any(greaterThan(fragPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = opacity * fragColor;\n}";e.exports=function(t){return n(t,i,o,null,[{name:"position",type:"vec3"},{name:"offset",type:"vec3"},{name:"color",type:"vec4"}])}},{"gl-shader":190}],128:[function(t,e,r){"use strict";function n(t){var e=t.getParameter(t.FRAMEBUFFER_BINDING),r=t.getParameter(t.RENDERBUFFER_BINDING),n=t.getParameter(t.TEXTURE_BINDING_2D);return[e,r,n]}function i(t,e){t.bindFramebuffer(t.FRAMEBUFFER,e[0]),t.bindRenderbuffer(t.RENDERBUFFER,e[1]),t.bindTexture(t.TEXTURE_2D,e[2])}function o(t,e){var r=t.getParameter(e.MAX_COLOR_ATTACHMENTS_WEBGL);y=new Array(r+1);for(var n=0;n<=r;++n){for(var i=new Array(r),o=0;o<n;++o)i[o]=t.COLOR_ATTACHMENT0+o;for(var o=n;o<r;++o)i[o]=t.NONE;y[n]=i}}function a(t){switch(t){case p:throw new Error("gl-fbo: Framebuffer unsupported");case g:throw new Error("gl-fbo: Framebuffer incomplete attachment");case m:throw new Error("gl-fbo: Framebuffer incomplete dimensions");case v:throw new Error("gl-fbo: Framebuffer incomplete missing attachment");default:throw new Error("gl-fbo: Framebuffer failed for unspecified reason")}}function s(t,e,r,n,i,o){if(!n)return null;var a=d(t,e,r,i,n);return a.magFilter=t.NEAREST,a.minFilter=t.NEAREST,a.mipSamples=1,a.bind(),t.framebufferTexture2D(t.FRAMEBUFFER,o,t.TEXTURE_2D,a.handle,0),a}function l(t,e,r,n,i){var o=t.createRenderbuffer();return t.bindRenderbuffer(t.RENDERBUFFER,o),t.renderbufferStorage(t.RENDERBUFFER,n,e,r),t.framebufferRenderbuffer(t.FRAMEBUFFER,i,t.RENDERBUFFER,o),o}function u(t){var e=n(t.gl),r=t.gl,o=t.handle=r.createFramebuffer(),u=t._shape[0],c=t._shape[1],h=t.color.length,f=t._ext,d=t._useStencil,p=t._useDepth,g=t._colorType;r.bindFramebuffer(r.FRAMEBUFFER,o);for(var m=0;m<h;++m)t.color[m]=s(r,u,c,g,r.RGBA,r.COLOR_ATTACHMENT0+m);0===h?(t._color_rb=l(r,u,c,r.RGBA4,r.COLOR_ATTACHMENT0),f&&f.drawBuffersWEBGL(y[0])):h>1&&f.drawBuffersWEBGL(y[h]);var v=r.getExtension("WEBGL_depth_texture");v?d?t.depth=s(r,u,c,v.UNSIGNED_INT_24_8_WEBGL,r.DEPTH_STENCIL,r.DEPTH_STENCIL_ATTACHMENT):p&&(t.depth=s(r,u,c,r.UNSIGNED_SHORT,r.DEPTH_COMPONENT,r.DEPTH_ATTACHMENT)):p&&d?t._depth_rb=l(r,u,c,r.DEPTH_STENCIL,r.DEPTH_STENCIL_ATTACHMENT):p?t._depth_rb=l(r,u,c,r.DEPTH_COMPONENT16,r.DEPTH_ATTACHMENT):d&&(t._depth_rb=l(r,u,c,r.STENCIL_INDEX,r.STENCIL_ATTACHMENT));var b=r.checkFramebufferStatus(r.FRAMEBUFFER);if(b!==r.FRAMEBUFFER_COMPLETE){t._destroyed=!0,r.bindFramebuffer(r.FRAMEBUFFER,null),r.deleteFramebuffer(t.handle),t.handle=null,t.depth&&(t.depth.dispose(),t.depth=null),t._depth_rb&&(r.deleteRenderbuffer(t._depth_rb),t._depth_rb=null);for(var m=0;m<t.color.length;++m)t.color[m].dispose(),t.color[m]=null;t._color_rb&&(r.deleteRenderbuffer(t._color_rb),t._color_rb=null),i(r,e),a(b)}i(r,e)}function c(t,e,r,n,i,o,a,s){this.gl=t,this._shape=[0|e,0|r],this._destroyed=!1,this._ext=s,this.color=new Array(i);for(var l=0;l<i;++l)this.color[l]=null;this._color_rb=null,this.depth=null,this._depth_rb=null,this._colorType=n,this._useDepth=o,this._useStencil=a;var c=this,h=[0|e,0|r];Object.defineProperties(h,{0:{get:function(){return c._shape[0]},set:function(t){return c.width=t}},1:{get:function(){return c._shape[1]},set:function(t){return c.height=t}}}),this._shapeVector=h,u(this)}function h(t,e,r){if(t._destroyed)throw new Error("gl-fbo: Can't resize destroyed FBO");if(t._shape[0]!==e||t._shape[1]!==r){var o=t.gl,s=o.getParameter(o.MAX_RENDERBUFFER_SIZE);if(e<0||e>s||r<0||r>s)throw new Error("gl-fbo: Can't resize FBO, invalid dimensions");t._shape[0]=e,t._shape[1]=r;for(var l=n(o),u=0;u<t.color.length;++u)t.color[u].shape=t._shape;t._color_rb&&(o.bindRenderbuffer(o.RENDERBUFFER,t._color_rb),o.renderbufferStorage(o.RENDERBUFFER,o.RGBA4,t._shape[0],t._shape[1])),t.depth&&(t.depth.shape=t._shape),t._depth_rb&&(o.bindRenderbuffer(o.RENDERBUFFER,t._depth_rb),t._useDepth&&t._useStencil?o.renderbufferStorage(o.RENDERBUFFER,o.DEPTH_STENCIL,t._shape[0],t._shape[1]):t._useDepth?o.renderbufferStorage(o.RENDERBUFFER,o.DEPTH_COMPONENT16,t._shape[0],t._shape[1]):t._useStencil&&o.renderbufferStorage(o.RENDERBUFFER,o.STENCIL_INDEX,t._shape[0],t._shape[1])),o.bindFramebuffer(o.FRAMEBUFFER,t.handle);var c=o.checkFramebufferStatus(o.FRAMEBUFFER);c!==o.FRAMEBUFFER_COMPLETE&&(t.dispose(),i(o,l),a(c)),i(o,l)}}function f(t,e,r,n){p||(p=t.FRAMEBUFFER_UNSUPPORTED,g=t.FRAMEBUFFER_INCOMPLETE_ATTACHMENT,m=t.FRAMEBUFFER_INCOMPLETE_DIMENSIONS,v=t.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT);var i=t.getExtension("WEBGL_draw_buffers");if(!y&&i&&o(t,i),Array.isArray(e)&&(n=r,r=0|e[1],e=0|e[0]),"number"!=typeof e)throw new Error("gl-fbo: Missing shape parameter");var a=t.getParameter(t.MAX_RENDERBUFFER_SIZE);if(e<0||e>a||r<0||r>a)throw new Error("gl-fbo: Parameters are too large for FBO");n=n||{};var s=1;if("color"in n){if(s=Math.max(0|n.color,0),s<0)throw new Error("gl-fbo: Must specify a nonnegative number of colors");if(s>1){if(!i)throw new Error("gl-fbo: Multiple draw buffer extension not supported");if(s>t.getParameter(i.MAX_COLOR_ATTACHMENTS_WEBGL))throw new Error("gl-fbo: Context does not support "+s+" draw buffers")}}var l=t.UNSIGNED_BYTE,u=t.getExtension("OES_texture_float");if(n.float&&s>0){if(!u)throw new Error("gl-fbo: Context does not support floating point textures");l=t.FLOAT}else n.preferFloat&&s>0&&u&&(l=t.FLOAT);var h=!0;"depth"in n&&(h=!!n.depth);var f=!1;return"stencil"in n&&(f=!!n.stencil),new c(t,e,r,l,s,h,f,i)}var d=t("gl-texture2d");e.exports=f;var p,g,m,v,y=null,b=c.prototype;Object.defineProperties(b,{shape:{get:function(){return this._destroyed?[0,0]:this._shapeVector},set:function(t){if(Array.isArray(t)||(t=[0|t,0|t]),2!==t.length)throw new Error("gl-fbo: Shape vector must be length 2");var e=0|t[0],r=0|t[1];return h(this,e,r),[e,r]},enumerable:!1},width:{get:function(){return this._destroyed?0:this._shape[0]},set:function(t){return t=0|t,h(this,t,this._shape[1]),t},enumerable:!1},height:{get:function(){return this._destroyed?0:this._shape[1]},set:function(t){return t=0|t,h(this,this._shape[0],t),t},enumerable:!1}}),b.bind=function(){if(!this._destroyed){var t=this.gl;t.bindFramebuffer(t.FRAMEBUFFER,this.handle),t.viewport(0,0,this._shape[0],this._shape[1])}},b.dispose=function(){if(!this._destroyed){this._destroyed=!0;var t=this.gl;t.deleteFramebuffer(this.handle),this.handle=null,this.depth&&(this.depth.dispose(),this.depth=null),this._depth_rb&&(t.deleteRenderbuffer(this._depth_rb),this._depth_rb=null);for(var e=0;e<this.color.length;++e)this.color[e].dispose(),this.color[e]=null;this._color_rb&&(t.deleteRenderbuffer(this._color_rb),this._color_rb=null)}}},{"gl-texture2d":202}],129:[function(t,e,r){function n(t,e,r){"use strict";var n=a(e)||"of unknown name (see npm glsl-shader-name)",l="unknown type";void 0!==r&&(l=r===o.FRAGMENT_SHADER?"fragment":"vertex");for(var u=i("Error compiling %s shader %s:\n",l,n),c=i("%s%s",u,t),h=t.split("\n"),f={},d=0;d<h.length;d++){var p=h[d];if(""!==p){var g=parseInt(p.split(":")[2]);if(isNaN(g))throw new Error(i("Could not parse error: %s",p));f[g]=p}}for(var m=s(e).split("\n"),d=0;d<m.length;d++)if(f[d+3]||f[d+2]||f[d+1]){var v=m[d];if(u+=v+"\n",f[d+1]){var y=f[d+1];y=y.substr(y.split(":",3).join(":").length+1).trim(),u+=i("^^^ %s\n\n",y)}}return{long:u.trim(),short:c.trim()}}var i=t("sprintf-js").sprintf,o=t("gl-constants/lookup"),a=t("glsl-shader-name"),s=t("add-line-numbers");e.exports=n},{"add-line-numbers":24,"gl-constants/lookup":123,"glsl-shader-name":214,"sprintf-js":437}],130:[function(t,e,r){r.lineVertex="precision mediump float;\n#define GLSLIFY 1\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\nvoid main() {\n  vec2 dir = (matrix * vec3(d, 0)).xy;\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = 0.5 * width *\n    normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n}\n",r.lineFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}\n",r.mitreVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 p;\n\nuniform mat3  matrix;\nuniform vec2 screenShape;\nuniform float radius;\n\nvoid main() {\n  vec3 pp = matrix * vec3(p, 1);\n  gl_Position  = vec4(pp.xy, 0, pp.z);\n  gl_PointSize = radius;\n}\n",r.mitreFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}\n",r.pickVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\nattribute vec4 pick0, pick1;\n\nuniform mat3 matrix;\nuniform vec2 screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\nfloat inverse_1_0(float m) {\n  return 1.0 / m;\n}\n\nmat2 inverse_1_0(mat2 m) {\n  return mat2(m[1][1],-m[0][1],\n             -m[1][0], m[0][0]) / (m[0][0]*m[1][1] - m[0][1]*m[1][0]);\n}\n\nmat3 inverse_1_0(mat3 m) {\n  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];\n  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];\n  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];\n\n  float b01 = a22 * a11 - a12 * a21;\n  float b11 = -a22 * a10 + a12 * a20;\n  float b21 = a21 * a10 - a11 * a20;\n\n  float det = a00 * b01 + a01 * b11 + a02 * b21;\n\n  return mat3(b01, (-a22 * a01 + a02 * a21), (a12 * a01 - a02 * a11),\n              b11, (a22 * a00 - a02 * a20), (-a12 * a00 + a02 * a10),\n              b21, (-a21 * a00 + a01 * a20), (a11 * a00 - a01 * a10)) / det;\n}\n\nmat4 inverse_1_0(mat4 m) {\n  float\n      a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3],\n      a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3],\n      a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3],\n      a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3],\n\n      b00 = a00 * a11 - a01 * a10,\n      b01 = a00 * a12 - a02 * a10,\n      b02 = a00 * a13 - a03 * a10,\n      b03 = a01 * a12 - a02 * a11,\n      b04 = a01 * a13 - a03 * a11,\n      b05 = a02 * a13 - a03 * a12,\n      b06 = a20 * a31 - a21 * a30,\n      b07 = a20 * a32 - a22 * a30,\n      b08 = a20 * a33 - a23 * a30,\n      b09 = a21 * a32 - a22 * a31,\n      b10 = a21 * a33 - a23 * a31,\n      b11 = a22 * a33 - a23 * a32,\n\n      det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n  return mat4(\n      a11 * b11 - a12 * b10 + a13 * b09,\n      a02 * b10 - a01 * b11 - a03 * b09,\n      a31 * b05 - a32 * b04 + a33 * b03,\n      a22 * b04 - a21 * b05 - a23 * b03,\n      a12 * b08 - a10 * b11 - a13 * b07,\n      a00 * b11 - a02 * b08 + a03 * b07,\n      a32 * b02 - a30 * b05 - a33 * b01,\n      a20 * b05 - a22 * b02 + a23 * b01,\n      a10 * b10 - a11 * b08 + a13 * b06,\n      a01 * b08 - a00 * b10 - a03 * b06,\n      a30 * b04 - a31 * b02 + a33 * b00,\n      a21 * b02 - a20 * b04 - a23 * b00,\n      a11 * b07 - a10 * b09 - a12 * b06,\n      a00 * b09 - a01 * b07 + a02 * b06,\n      a31 * b01 - a30 * b03 - a32 * b00,\n      a20 * b03 - a21 * b01 + a22 * b00) / det;\n}\n\n\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 n = width *\n    normalize(screenShape.yx * vec2(d.y, -d.x)) / screenShape.xy;\n  gl_Position = vec4(base.xy/base.z + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}\n",
++r.pickFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}\n",r.fillVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 a, d;\n\nuniform mat3 matrix;\nuniform vec2 projectAxis;\nuniform float projectValue;\nuniform float depth;\n\nvoid main() {\n  vec3 base = matrix * vec3(a, 1);\n  vec2 p = base.xy / base.z;\n  if(d.y < 0.0 || (d.y == 0.0 && d.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}\n",r.fillFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"},{}],131:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s){this.plot=t,this.dashPattern=e,this.lineBuffer=r,this.pickBuffer=n,this.lineShader=i,this.mitreShader=o,this.fillShader=a,this.pickShader=s,this.usingDashes=!1,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.width=1,this.color=[0,0,1,1],this.fill=[!1,!1,!1,!1],this.fillColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.data=null,this.numPoints=0,this.vertCount=0,this.pickOffset=0,this.lodBuffer=[]}function i(t){return t.map(function(t){return t.slice()})}function o(t,e){var r=t.gl,i=s(r),o=s(r),u=l(r,[1,1]),c=a(r,h.lineVertex,h.lineFragment),f=a(r,h.mitreVertex,h.mitreFragment),d=a(r,h.fillVertex,h.fillFragment),p=a(r,h.pickVertex,h.pickFragment),g=new n(t,u,i,o,c,f,d,p);return t.addObject(g),g.update(e),g}e.exports=o;var a=t("gl-shader"),s=t("gl-buffer"),l=t("gl-texture2d"),u=t("ndarray"),c=t("typedarray-pool"),h=t("./lib/shaders"),f=n.prototype;f.draw=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0],r=[1,0],n=[-1,0],i=[0,1],o=[0,-1];return function(){var a=this.plot,s=this.color,l=this.width,u=(this.numPoints,this.bounds),c=this.vertCount;if(c){var h=a.gl,f=a.viewBox,d=a.dataBox,p=a.pixelRatio,g=u[2]-u[0],m=u[3]-u[1],v=d[2]-d[0],y=d[3]-d[1],b=f[2]-f[0],x=f[3]-f[1];t[0]=2*g/v,t[4]=2*m/y,t[6]=2*(u[0]-d[0])/v-1,t[7]=2*(u[1]-d[1])/y-1,e[0]=b,e[1]=x;var _=this.lineBuffer;_.bind();var w=this.fill;if(w[0]||w[1]||w[2]||w[3]){var M=this.fillShader;M.bind();var k=M.uniforms;k.matrix=t,k.depth=a.nextDepthValue();var A=M.attributes;A.a.pointer(h.FLOAT,!1,16,0),A.d.pointer(h.FLOAT,!1,16,8),h.depthMask(!0),h.enable(h.DEPTH_TEST);var T=this.fillColor;w[0]&&(k.color=T[0],k.projectAxis=n,k.projectValue=1,h.drawArrays(h.TRIANGLES,0,c)),w[1]&&(k.color=T[1],k.projectAxis=o,k.projectValue=1,h.drawArrays(h.TRIANGLES,0,c)),w[2]&&(k.color=T[2],k.projectAxis=r,k.projectValue=1,h.drawArrays(h.TRIANGLES,0,c)),w[3]&&(k.color=T[3],k.projectAxis=i,k.projectValue=1,h.drawArrays(h.TRIANGLES,0,c)),h.depthMask(!1),h.disable(h.DEPTH_TEST)}var E=this.lineShader;E.bind();var S=E.uniforms;S.matrix=t,S.color=s,S.width=l*p,S.screenShape=e,S.dashPattern=this.dashPattern.bind(),S.dashLength=this.dashLength*p;var L=E.attributes;if(L.a.pointer(h.FLOAT,!1,16,0),L.d.pointer(h.FLOAT,!1,16,8),h.drawArrays(h.TRIANGLES,0,c),l>2&&!this.usingDashes){var z=this.mitreShader;z.bind();var I=z.uniforms;I.matrix=t,I.color=s,I.screenShape=e,I.radius=l*p,z.attributes.p.pointer(h.FLOAT,!1,48,0),h.drawArrays(h.POINTS,0,c/3|0)}}}}(),f.drawPick=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0],r=[0,0,0,0];return function(n){var i=this.plot,o=this.pickShader,a=this.lineBuffer,s=this.pickBuffer,l=this.width,u=this.numPoints,c=this.bounds,h=this.vertCount,f=i.gl,d=i.viewBox,p=i.dataBox,g=i.pickPixelRatio,m=c[2]-c[0],v=c[3]-c[1],y=p[2]-p[0],b=p[3]-p[1],x=d[2]-d[0],_=d[3]-d[1];if(this.pickOffset=n,!h)return n+u;t[0]=2*m/y,t[4]=2*v/b,t[6]=2*(c[0]-p[0])/y-1,t[7]=2*(c[1]-p[1])/b-1,e[0]=x,e[1]=_,r[0]=255&n,r[1]=n>>>8&255,r[2]=n>>>16&255,r[3]=n>>>24,o.bind();var w=o.uniforms;w.matrix=t,w.width=l*g,w.pickOffset=r,w.screenShape=e;var M=o.attributes;return a.bind(),M.a.pointer(f.FLOAT,!1,16,0),M.d.pointer(f.FLOAT,!1,16,8),s.bind(),M.pick0.pointer(f.UNSIGNED_BYTE,!1,8,0),M.pick1.pointer(f.UNSIGNED_BYTE,!1,8,4),f.drawArrays(f.TRIANGLES,0,h),n+u}}(),f.pick=function(t,e,r){var n=this.pickOffset,i=this.numPoints;if(r<n||r>=n+i)return null;var o=r-n,a=this.data;return{object:this,pointId:o,dataCoord:[a[2*o],a[2*o+1]]}},f.update=function(t){t=t||{};var e=this.plot.gl;!!t.connectGaps;this.color=(t.color||[0,0,1,1]).slice(),this.width=+(t.width||1),this.fill=(t.fill||[!1,!1,!1,!1]).slice(),this.fillColor=i(t.fillColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]);for(var r=t.dashes||[1],n=0,o=0;o<r.length;++o)n+=r[o];for(var a=c.mallocUint8(n),s=0,h=255,o=0;o<r.length;++o){for(var f=0;f<r[o];++f)a[s++]=h;h^=255}this.dashPattern.dispose(),this.usingDashes=r.length>1,this.dashPattern=l(e,u(a,[n,1,4],[1,0,0])),this.dashPattern.minFilter=e.NEAREST,this.dashPattern.magFilter=e.NEAREST,this.dashLength=n,c.free(a);var d=t.positions;this.data=d;var p=this.bounds;p[0]=p[1]=1/0,p[2]=p[3]=-(1/0);var g=this.numPoints=d.length>>>1;if(0!==g){for(var o=0;o<g;++o){var m=d[2*o],v=d[2*o+1];isNaN(m)||isNaN(v)||(p[0]=Math.min(p[0],m),p[1]=Math.min(p[1],v),p[2]=Math.max(p[2],m),p[3]=Math.max(p[3],v))}p[0]===p[2]&&(p[2]+=1),p[3]===p[1]&&(p[3]+=1);for(var y=c.mallocFloat32(24*(g-1)),b=c.mallocUint32(12*(g-1)),x=y.length,_=b.length,s=g,w=0;s>1;){var M=--s,m=d[2*s],v=d[2*s+1],k=M-1,A=d[2*k],T=d[2*k+1];if(!(isNaN(m)||isNaN(v)||isNaN(A)||isNaN(T))){w+=1,m=(m-p[0])/(p[2]-p[0]),v=(v-p[1])/(p[3]-p[1]),A=(A-p[0])/(p[2]-p[0]),T=(T-p[1])/(p[3]-p[1]);var E=A-m,S=T-v,L=M|1<<24,z=M-1,I=M,C=M-1|1<<24;y[--x]=-S,y[--x]=-E,y[--x]=v,y[--x]=m,b[--_]=L,b[--_]=z,y[--x]=S,y[--x]=E,y[--x]=T,y[--x]=A,b[--_]=I,b[--_]=C,y[--x]=-S,y[--x]=-E,y[--x]=T,y[--x]=A,b[--_]=I,b[--_]=C,y[--x]=S,y[--x]=E,y[--x]=T,y[--x]=A,b[--_]=I,b[--_]=C,y[--x]=-S,y[--x]=-E,y[--x]=v,y[--x]=m,b[--_]=L,b[--_]=z,y[--x]=S,y[--x]=E,y[--x]=v,y[--x]=m,b[--_]=L,b[--_]=z}}this.vertCount=6*w,this.lineBuffer.update(y.subarray(x)),this.pickBuffer.update(b.subarray(_)),c.free(y),c.free(b)}},f.dispose=function(){this.plot.removeObject(this),this.lineBuffer.dispose(),this.pickBuffer.dispose(),this.lineShader.dispose(),this.mitreShader.dispose(),this.fillShader.dispose(),this.pickShader.dispose(),this.dashPattern.dispose()}},{"./lib/shaders":130,"gl-buffer":121,"gl-shader":190,"gl-texture2d":202,ndarray:385,"typedarray-pool":449}],132:[function(t,e,r){var n=t("gl-shader"),i="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, nextPosition;\nattribute float arcLength, lineWidth;\nattribute vec4 color;\n\nuniform vec2 screenShape;\nuniform float pixelRatio;\nuniform mat4 model, view, projection;\n\nvarying vec4 fragColor;\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\n\nvoid main() {\n  vec4 projected = projection * view * model * vec4(position, 1.0);\n  vec4 tangentClip = projection * view * model * vec4(nextPosition - position, 0.0);\n  vec2 tangent = normalize(screenShape * tangentClip.xy);\n  vec2 offset = 0.5 * pixelRatio * lineWidth * vec2(tangent.y, -tangent.x) / screenShape;\n\n  gl_Position = vec4(projected.xy + projected.w * offset, projected.zw);\n\n  worldPosition = position;\n  pixelArcLength = arcLength;\n  fragColor = color;\n}\n",o="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3      clipBounds[2];\nuniform sampler2D dashTexture;\nuniform float     dashScale;\nuniform float     opacity;\n\nvarying vec3    worldPosition;\nvarying float   pixelArcLength;\nvarying vec4    fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  float dashWeight = texture2D(dashTexture, vec2(dashScale * pixelArcLength, 0)).r;\n  if(dashWeight < 0.5) {\n    discard;\n  }\n  gl_FragColor = fragColor * opacity;\n}\n",a="precision mediump float;\n#define GLSLIFY 1\n\n#define FLOAT_MAX  1.70141184e38\n#define FLOAT_MIN  1.17549435e-38\n\nlowp vec4 encode_float_1_0(highp float v) {\n  highp float av = abs(v);\n\n  //Handle special cases\n  if(av < FLOAT_MIN) {\n    return vec4(0.0, 0.0, 0.0, 0.0);\n  } else if(v > FLOAT_MAX) {\n    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;\n  } else if(v < -FLOAT_MAX) {\n    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;\n  }\n\n  highp vec4 c = vec4(0,0,0,0);\n\n  //Compute exponent and mantissa\n  highp float e = floor(log2(av));\n  highp float m = av * pow(2.0, -e) - 1.0;\n  \n  //Unpack mantissa\n  c[1] = floor(128.0 * m);\n  m -= c[1] / 128.0;\n  c[2] = floor(32768.0 * m);\n  m -= c[2] / 32768.0;\n  c[3] = floor(8388608.0 * m);\n  \n  //Unpack exponent\n  highp float ebias = e + 127.0;\n  c[0] = floor(ebias / 2.0);\n  ebias -= c[0] * 2.0;\n  c[1] += floor(ebias) * 128.0; \n\n  //Unpack sign bit\n  c[0] += 128.0 * step(0.0, -v);\n\n  //Scale back to range\n  return c / 255.0;\n}\n\n\n\nuniform float pickId;\nuniform vec3 clipBounds[2];\n\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId/255.0, encode_float_1_0(pixelArcLength).xyz);\n}",s=[{name:"position",type:"vec3"},{name:"nextPosition",type:"vec3"},{name:"arcLength",type:"float"},{name:"lineWidth",type:"float"},{name:"color",type:"vec4"}];r.createShader=function(t){return n(t,i,o,null,s)},r.createPickShader=function(t){return n(t,i,a,null,s)}},{"gl-shader":190}],133:[function(t,e,r){"use strict";function n(t,e){for(var r=0,n=0;n<3;++n){var i=t[n]-e[n];r+=i*i}return Math.sqrt(r)}function i(t){for(var e=[[-1e6,-1e6,-1e6],[1e6,1e6,1e6]],r=0;r<3;++r)e[0][r]=Math.max(t[0][r],e[0][r]),e[1][r]=Math.min(t[1][r],e[1][r]);return e}function o(t,e,r,n){this.arcLength=t,this.position=e,this.index=r,this.dataCoordinate=n}function a(t,e,r,n,i,o){this.gl=t,this.shader=e,this.pickShader=r,this.buffer=n,this.vao=i,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.points=[],this.arcLength=[],this.vertexCount=0,this.bounds=[[0,0,0],[0,0,0]],this.pickId=0,this.lineWidth=1,this.texture=o,this.dashScale=1,this.opacity=1,this.dirty=!0,this.pixelRatio=1}function s(t){var e=t.gl||t.scene&&t.scene.gl,r=g(e);r.attributes.position.location=0,r.attributes.nextPosition.location=1,r.attributes.arcLength.location=2,r.attributes.lineWidth.location=3,r.attributes.color.location=4;var n=m(e);n.attributes.position.location=0,n.attributes.nextPosition.location=1,n.attributes.arcLength.location=2,n.attributes.lineWidth.location=3,n.attributes.color.location=4;for(var i=l(e),o=u(e,[{buffer:i,size:3,offset:0,stride:48},{buffer:i,size:3,offset:12,stride:48},{buffer:i,size:1,offset:24,stride:48},{buffer:i,size:1,offset:28,stride:48},{buffer:i,size:4,offset:32,stride:48}]),s=d(new Array(1024),[256,1,4]),h=0;h<1024;++h)s.data[h]=255;var f=c(e,s);f.wrap=e.REPEAT;var p=new a(e,r,n,i,o,f);return p.update(t),p}e.exports=s;var l=t("gl-buffer"),u=t("gl-vao"),c=t("gl-texture2d"),h=t("glsl-read-float"),f=t("binary-search-bounds"),d=t("ndarray"),p=t("./lib/shaders"),g=p.createShader,m=p.createPickShader,v=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],y=a.prototype;y.isTransparent=function(){return this.opacity<1},y.isOpaque=function(){return this.opacity>=1},y.pickSlots=1,y.setPickBase=function(t){this.pickId=t},y.drawTransparent=y.draw=function(t){var e=this.gl,r=this.shader,n=this.vao;r.bind(),r.uniforms={model:t.model||v,view:t.view||v,projection:t.projection||v,clipBounds:i(this.clipBounds),dashTexture:this.texture.bind(),dashScale:this.dashScale/this.arcLength[this.arcLength.length-1],opacity:this.opacity,screenShape:[e.drawingBufferWidth,e.drawingBufferHeight],pixelRatio:this.pixelRatio},n.bind(),n.draw(e.TRIANGLE_STRIP,this.vertexCount)},y.drawPick=function(t){var e=this.gl,r=this.pickShader,n=this.vao;r.bind(),r.uniforms={model:t.model||v,view:t.view||v,projection:t.projection||v,pickId:this.pickId,clipBounds:i(this.clipBounds),screenShape:[e.drawingBufferWidth,e.drawingBufferHeight],pixelRatio:this.pixelRatio},n.bind(),n.draw(e.TRIANGLE_STRIP,this.vertexCount)},y.update=function(t){var e,r;this.dirty=!0;var i=!!t.connectGaps;"dashScale"in t&&(this.dashScale=t.dashScale),"opacity"in t&&(this.opacity=+t.opacity);var o=t.position||t.positions;if(o){var a=t.color||t.colors||[0,0,0,1],s=t.lineWidth||1,l=[],u=[],c=[],h=0,p=0,g=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],m=!1;t:for(e=1;e<o.length;++e){var v=o[e-1],y=o[e];for(u.push(h),c.push(v.slice()),r=0;r<3;++r){if(isNaN(v[r])||isNaN(y[r])||!isFinite(v[r])||!isFinite(y[r])){if(!i&&l.length>0){for(var b=0;b<24;++b)l.push(l[l.length-12]);p+=2,m=!0}continue t}g[0][r]=Math.min(g[0][r],v[r],y[r]),g[1][r]=Math.max(g[1][r],v[r],y[r])}var x,_;Array.isArray(a[0])?(x=a[e-1],_=a[e]):x=_=a,3===x.length&&(x=[x[0],x[1],x[2],1]),3===_.length&&(_=[_[0],_[1],_[2],1]);var w;w=Array.isArray(s)?s[e-1]:s;var M=h;if(h+=n(v,y),m){for(r=0;r<2;++r)l.push(v[0],v[1],v[2],y[0],y[1],y[2],M,w,x[0],x[1],x[2],x[3]);p+=2,m=!1}l.push(v[0],v[1],v[2],y[0],y[1],y[2],M,w,x[0],x[1],x[2],x[3],v[0],v[1],v[2],y[0],y[1],y[2],M,-w,x[0],x[1],x[2],x[3],y[0],y[1],y[2],v[0],v[1],v[2],h,-w,_[0],_[1],_[2],_[3],y[0],y[1],y[2],v[0],v[1],v[2],h,w,_[0],_[1],_[2],_[3]),p+=4}if(this.buffer.update(l),u.push(h),c.push(o[o.length-1].slice()),this.bounds=g,this.vertexCount=p,this.points=c,this.arcLength=u,"dashes"in t){var k=t.dashes,A=k.slice();for(A.unshift(0),e=1;e<A.length;++e)A[e]=A[e-1]+A[e];var T=d(new Array(1024),[256,1,4]);for(e=0;e<256;++e){for(r=0;r<4;++r)T.set(e,0,r,0);1&f.le(A,A[A.length-1]*e/255)?T.set(e,0,0,0):T.set(e,0,0,255)}this.texture.setPixels(T)}}},y.dispose=function(){this.shader.dispose(),this.vao.dispose(),this.buffer.dispose()},y.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=h(t.value[0],t.value[1],t.value[2],0),r=f.le(this.arcLength,e);if(r<0)return null;if(r===this.arcLength.length-1)return new o(this.arcLength[this.arcLength.length-1],this.points[this.points.length-1].slice(),r);for(var n=this.points[r],i=this.points[Math.min(r+1,this.points.length-1)],a=(e-this.arcLength[r])/(this.arcLength[r+1]-this.arcLength[r]),s=1-a,l=[0,0,0],u=0;u<3;++u)l[u]=s*n[u]+a*i[u];var c=Math.min(a<.5?r:r+1,this.points.length-1);return new o(e,l,c,this.points[c])}},{"./lib/shaders":132,"binary-search-bounds":48,"gl-buffer":121,"gl-texture2d":202,"gl-vao":206,"glsl-read-float":213,ndarray:385}],134:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=r*o-i*n;return a?(a=1/a,t[0]=o*a,t[1]=-n*a,t[2]=-i*a,t[3]=r*a,t):null}e.exports=n},{}],135:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],h=c*a-s*u,f=-c*o+s*l,d=u*o-a*l,p=r*h+n*f+i*d;return p?(p=1/p,t[0]=h*p,t[1]=(-c*n+i*u)*p,t[2]=(s*n-i*a)*p,t[3]=f*p,t[4]=(c*r-i*l)*p,t[5]=(-s*r+i*o)*p,t[6]=d*p,t[7]=(-u*r+n*l)*p,t[8]=(a*r-n*o)*p,t):null}e.exports=n},{}],136:[function(t,e,r){function n(t){var e=new Float32Array(16);return e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e[4]=t[4],e[5]=t[5],e[6]=t[6],e[7]=t[7],e[8]=t[8],e[9]=t[9],e[10]=t[10],e[11]=t[11],e[12]=t[12],e[13]=t[13],e[14]=t[14],e[15]=t[15],e}e.exports=n},{}],137:[function(t,e,r){function n(){var t=new Float32Array(16);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],138:[function(t,e,r){function n(t){var e=t[0],r=t[1],n=t[2],i=t[3],o=t[4],a=t[5],s=t[6],l=t[7],u=t[8],c=t[9],h=t[10],f=t[11],d=t[12],p=t[13],g=t[14],m=t[15],v=e*a-r*o,y=e*s-n*o,b=e*l-i*o,x=r*s-n*a,_=r*l-i*a,w=n*l-i*s,M=u*p-c*d,k=u*g-h*d,A=u*m-f*d,T=c*g-h*p,E=c*m-f*p,S=h*m-f*g;return v*S-y*E+b*T+x*A-_*k+w*M}e.exports=n},{}],139:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=r+r,s=n+n,l=i+i,u=r*a,c=n*a,h=n*s,f=i*a,d=i*s,p=i*l,g=o*a,m=o*s,v=o*l;return t[0]=1-h-p,t[1]=c+v,t[2]=f-m,t[3]=0,t[4]=c-v,t[5]=1-u-p,t[6]=d+g,t[7]=0,t[8]=f+m,t[9]=d-g,t[10]=1-u-h,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],140:[function(t,e,r){function n(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=n+n,l=i+i,u=o+o,c=n*s,h=n*l,f=n*u,d=i*l,p=i*u,g=o*u,m=a*s,v=a*l,y=a*u;return t[0]=1-(d+g),t[1]=h+y,t[2]=f-v,t[3]=0,t[4]=h-y,t[5]=1-(c+g),t[6]=p+m,t[7]=0,t[8]=f+v,t[9]=p-m,t[10]=1-(c+d),t[11]=0,t[12]=r[0],t[13]=r[1],t[14]=r[2],t[15]=1,t}e.exports=n},{}],141:[function(t,e,r){function n(t){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}e.exports=n},{}],142:[function(t,e,r){function n(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],h=e[9],f=e[10],d=e[11],p=e[12],g=e[13],m=e[14],v=e[15],y=r*s-n*a,b=r*l-i*a,x=r*u-o*a,_=n*l-i*s,w=n*u-o*s,M=i*u-o*l,k=c*g-h*p,A=c*m-f*p,T=c*v-d*p,E=h*m-f*g,S=h*v-d*g,L=f*v-d*m,z=y*L-b*S+x*E+_*T-w*A+M*k;return z?(z=1/z,t[0]=(s*L-l*S+u*E)*z,t[1]=(i*S-n*L-o*E)*z,t[2]=(g*M-m*w+v*_)*z,t[3]=(f*w-h*M-d*_)*z,t[4]=(l*T-a*L-u*A)*z,t[5]=(r*L-i*T+o*A)*z,t[6]=(m*x-p*M-v*b)*z,t[7]=(c*M-f*x+d*b)*z,t[8]=(a*S-s*T+u*k)*z,t[9]=(n*T-r*S-o*k)*z,t[10]=(p*w-g*x+v*y)*z,t[11]=(h*x-c*w-d*y)*z,t[12]=(s*A-a*E-l*k)*z,t[13]=(r*E-n*A+i*k)*z,t[14]=(g*b-p*_-m*y)*z,t[15]=(c*_-h*b+f*y)*z,t):null}e.exports=n},{}],143:[function(t,e,r){function n(t,e,r,n){var o,a,s,l,u,c,h,f,d,p,g=e[0],m=e[1],v=e[2],y=n[0],b=n[1],x=n[2],_=r[0],w=r[1],M=r[2];return Math.abs(g-_)<1e-6&&Math.abs(m-w)<1e-6&&Math.abs(v-M)<1e-6?i(t):(h=g-_,f=m-w,d=v-M,p=1/Math.sqrt(h*h+f*f+d*d),h*=p,f*=p,d*=p,o=b*d-x*f,a=x*h-y*d,s=y*f-b*h,p=Math.sqrt(o*o+a*a+s*s),p?(p=1/p,o*=p,a*=p,s*=p):(o=0,a=0,s=0),l=f*s-d*a,u=d*o-h*s,c=h*a-f*o,p=Math.sqrt(l*l+u*u+c*c),p?(p=1/p,l*=p,u*=p,c*=p):(l=0,u=0,c=0),t[0]=o,t[1]=l,t[2]=h,t[3]=0,t[4]=a,t[5]=u,t[6]=f,t[7]=0,t[8]=s,t[9]=c,t[10]=d,t[11]=0,t[12]=-(o*g+a*m+s*v),t[13]=-(l*g+u*m+c*v),t[14]=-(h*g+f*m+d*v),t[15]=1,t)}var i=t("./identity");e.exports=n},{"./identity":141}],144:[function(t,e,r){function n(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],h=e[8],f=e[9],d=e[10],p=e[11],g=e[12],m=e[13],v=e[14],y=e[15],b=r[0],x=r[1],_=r[2],w=r[3];return t[0]=b*n+x*s+_*h+w*g,t[1]=b*i+x*l+_*f+w*m,t[2]=b*o+x*u+_*d+w*v,t[3]=b*a+x*c+_*p+w*y,b=r[4],x=r[5],_=r[6],w=r[7],t[4]=b*n+x*s+_*h+w*g,t[5]=b*i+x*l+_*f+w*m,t[6]=b*o+x*u+_*d+w*v,t[7]=b*a+x*c+_*p+w*y,b=r[8],x=r[9],_=r[10],w=r[11],t[8]=b*n+x*s+_*h+w*g,t[9]=b*i+x*l+_*f+w*m,t[10]=b*o+x*u+_*d+w*v,t[11]=b*a+x*c+_*p+w*y,b=r[12],x=r[13],_=r[14],w=r[15],t[12]=b*n+x*s+_*h+w*g,t[13]=b*i+x*l+_*f+w*m,t[14]=b*o+x*u+_*d+w*v,t[15]=b*a+x*c+_*p+w*y,t}e.exports=n},{}],145:[function(t,e,r){function n(t,e,r,n,i){var o=1/Math.tan(e/2),a=1/(n-i);return t[0]=o/r,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=o,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=(i+n)*a,t[11]=-1,t[12]=0,t[13]=0,t[14]=2*i*n*a,t[15]=0,t}e.exports=n},{}],146:[function(t,e,r){function n(t,e,r,n){var i,o,a,s,l,u,c,h,f,d,p,g,m,v,y,b,x,_,w,M,k,A,T,E,S=n[0],L=n[1],z=n[2],I=Math.sqrt(S*S+L*L+z*z);return 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Math.abs(r-u)<=n.EPSILON*Math.max(1,Math.abs(r),Math.abs(u))&&Math.abs(i-c)<=n.EPSILON*Math.max(1,Math.abs(i),Math.abs(c))&&Math.abs(o-h)<=n.EPSILON*Math.max(1,Math.abs(o),Math.abs(h))&&Math.abs(a-f)<=n.EPSILON*Math.max(1,Math.abs(a),Math.abs(f))&&Math.abs(s-d)<=n.EPSILON*Math.max(1,Math.abs(s),Math.abs(d))&&Math.abs(l-p)<=n.EPSILON*Math.max(1,Math.abs(l),Math.abs(p))},e.exports=i},{"./common.js":155}],158:[function(t,e,r){var n=t("./common.js"),i={};i.create=function(){var t=new n.ARRAY_TYPE(9);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=1,t[5]=0,t[6]=0,t[7]=0,t[8]=1,t},i.fromMat4=function(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[4],t[4]=e[5],t[5]=e[6],t[6]=e[8],t[7]=e[9],t[8]=e[10],t},i.clone=function(t){var e=new n.ARRAY_TYPE(9);return e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e[4]=t[4],e[5]=t[5],e[6]=t[6],e[7]=t[7],e[8]=t[8],e},i.copy=function(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t},i.fromValues=function(t,e,r,i,o,a,s,l,u){var c=new n.ARRAY_TYPE(9);return c[0]=t,c[1]=e,c[2]=r,c[3]=i,c[4]=o,c[5]=a,c[6]=s,c[7]=l,c[8]=u,c},i.set=function(t,e,r,n,i,o,a,s,l,u){return t[0]=e,t[1]=r,t[2]=n,t[3]=i,t[4]=o,t[5]=a,t[6]=s,t[7]=l,t[8]=u,t},i.identity=function(t){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=1,t[5]=0,t[6]=0,t[7]=0,t[8]=1,t},i.transpose=function(t,e){if(t===e){var r=e[1],n=e[2],i=e[5];t[1]=e[3],t[2]=e[6],t[3]=r,t[5]=e[7],t[6]=n,t[7]=i}else t[0]=e[0],t[1]=e[3],t[2]=e[6],t[3]=e[1],t[4]=e[4],t[5]=e[7],t[6]=e[2],t[7]=e[5],t[8]=e[8];return t},i.invert=function(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],h=c*a-s*u,f=-c*o+s*l,d=u*o-a*l,p=r*h+n*f+i*d;return p?(p=1/p,t[0]=h*p,t[1]=(-c*n+i*u)*p,t[2]=(s*n-i*a)*p,t[3]=f*p,t[4]=(c*r-i*l)*p,t[5]=(-s*r+i*o)*p,t[6]=d*p,t[7]=(-u*r+n*l)*p,t[8]=(a*r-n*o)*p,t):null},i.adjoint=function(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8];return t[0]=a*c-s*u,t[1]=i*u-n*c,t[2]=n*s-i*a,t[3]=s*l-o*c,t[4]=r*c-i*l,t[5]=i*o-r*s,t[6]=o*u-a*l,t[7]=n*l-r*u,t[8]=r*a-n*o,t},i.determinant=function(t){var e=t[0],r=t[1],n=t[2],i=t[3],o=t[4],a=t[5],s=t[6],l=t[7],u=t[8];return e*(u*o-a*l)+r*(-u*i+a*s)+n*(l*i-o*s)},i.multiply=function(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],h=e[8],f=r[0],d=r[1],p=r[2],g=r[3],m=r[4],v=r[5],y=r[6],b=r[7],x=r[8];return t[0]=f*n+d*a+p*u,t[1]=f*i+d*s+p*c,t[2]=f*o+d*l+p*h,t[3]=g*n+m*a+v*u,t[4]=g*i+m*s+v*c,t[5]=g*o+m*l+v*h,t[6]=y*n+b*a+x*u,t[7]=y*i+b*s+x*c,t[8]=y*o+b*l+x*h,t},i.mul=i.multiply,i.translate=function(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],h=e[8],f=r[0],d=r[1];return t[0]=n,t[1]=i,t[2]=o,t[3]=a,t[4]=s,t[5]=l,t[6]=f*n+d*a+u,t[7]=f*i+d*s+c,t[8]=f*o+d*l+h,t},i.rotate=function(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],h=e[8],f=Math.sin(r),d=Math.cos(r);return t[0]=d*n+f*a,t[1]=d*i+f*s,t[2]=d*o+f*l,t[3]=d*a-f*n,t[4]=d*s-f*i,t[5]=d*l-f*o,t[6]=u,t[7]=c,t[8]=h,t},i.scale=function(t,e,r){var n=r[0],i=r[1];return t[0]=n*e[0],t[1]=n*e[1],t[2]=n*e[2],t[3]=i*e[3],
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r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],h=e[9],f=e[10],d=e[11],p=e[12],g=e[13],m=e[14],v=e[15],y=r*s-n*a,b=r*l-i*a,x=r*u-o*a,_=n*l-i*s,w=n*u-o*s,M=i*u-o*l,k=c*g-h*p,A=c*m-f*p,T=c*v-d*p,E=h*m-f*g,S=h*v-d*g,L=f*v-d*m,z=y*L-b*S+x*E+_*T-w*A+M*k;return z?(z=1/z,t[0]=(s*L-l*S+u*E)*z,t[1]=(l*T-a*L-u*A)*z,t[2]=(a*S-s*T+u*k)*z,t[3]=(i*S-n*L-o*E)*z,t[4]=(r*L-i*T+o*A)*z,t[5]=(n*T-r*S-o*k)*z,t[6]=(g*M-m*w+v*_)*z,t[7]=(m*x-p*M-v*b)*z,t[8]=(p*w-g*x+v*y)*z,t):null},i.str=function(t){return"mat3("+t[0]+", "+t[1]+", "+t[2]+", "+t[3]+", "+t[4]+", "+t[5]+", "+t[6]+", "+t[7]+", "+t[8]+")"},i.frob=function(t){return Math.sqrt(Math.pow(t[0],2)+Math.pow(t[1],2)+Math.pow(t[2],2)+Math.pow(t[3],2)+Math.pow(t[4],2)+Math.pow(t[5],2)+Math.pow(t[6],2)+Math.pow(t[7],2)+Math.pow(t[8],2))},i.add=function(t,e,r){return t[0]=e[0]+r[0],t[1]=e[1]+r[1],t[2]=e[2]+r[2],t[3]=e[3]+r[3],t[4]=e[4]+r[4],t[5]=e[5]+r[5],t[6]=e[6]+r[6],t[7]=e[7]+r[7],t[8]=e[8]+r[8],t},i.subtract=function(t,e,r){return t[0]=e[0]-r[0],t[1]=e[1]-r[1],t[2]=e[2]-r[2],t[3]=e[3]-r[3],t[4]=e[4]-r[4],t[5]=e[5]-r[5],t[6]=e[6]-r[6],t[7]=e[7]-r[7],t[8]=e[8]-r[8],t},i.sub=i.subtract,i.multiplyScalar=function(t,e,r){return t[0]=e[0]*r,t[1]=e[1]*r,t[2]=e[2]*r,t[3]=e[3]*r,t[4]=e[4]*r,t[5]=e[5]*r,t[6]=e[6]*r,t[7]=e[7]*r,t[8]=e[8]*r,t},i.multiplyScalarAndAdd=function(t,e,r,n){return t[0]=e[0]+r[0]*n,t[1]=e[1]+r[1]*n,t[2]=e[2]+r[2]*n,t[3]=e[3]+r[3]*n,t[4]=e[4]+r[4]*n,t[5]=e[5]+r[5]*n,t[6]=e[6]+r[6]*n,t[7]=e[7]+r[7]*n,t[8]=e[8]+r[8]*n,t},i.exactEquals=function(t,e){return t[0]===e[0]&&t[1]===e[1]&&t[2]===e[2]&&t[3]===e[3]&&t[4]===e[4]&&t[5]===e[5]&&t[6]===e[6]&&t[7]===e[7]&&t[8]===e[8]},i.equals=function(t,e){var r=t[0],i=t[1],o=t[2],a=t[3],s=t[4],l=t[5],u=t[6],c=t[7],h=t[8],f=e[0],d=e[1],p=e[2],g=e[3],m=e[4],v=e[5],y=t[6],b=e[7],x=e[8];return Math.abs(r-f)<=n.EPSILON*Math.max(1,Math.abs(r),Math.abs(f))&&Math.abs(i-d)<=n.EPSILON*Math.max(1,Math.abs(i),Math.abs(d))&&Math.abs(o-p)<=n.EPSILON*Math.max(1,Math.abs(o),Math.abs(p))&&Math.abs(a-g)<=n.EPSILON*Math.max(1,Math.abs(a),Math.abs(g))&&Math.abs(s-m)<=n.EPSILON*Math.max(1,Math.abs(s),Math.abs(m))&&Math.abs(l-v)<=n.EPSILON*Math.max(1,Math.abs(l),Math.abs(v))&&Math.abs(u-y)<=n.EPSILON*Math.max(1,Math.abs(u),Math.abs(y))&&Math.abs(c-b)<=n.EPSILON*Math.max(1,Math.abs(c),Math.abs(b))&&Math.abs(h-x)<=n.EPSILON*Math.max(1,Math.abs(h),Math.abs(x))},e.exports=i},{"./common.js":155}],159:[function(t,e,r){var n=t("./common.js"),i={scalar:{},SIMD:{}};i.create=function(){var t=new n.ARRAY_TYPE(16);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.clone=function(t){var e=new n.ARRAY_TYPE(16);return e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e[4]=t[4],e[5]=t[5],e[6]=t[6],e[7]=t[7],e[8]=t[8],e[9]=t[9],e[10]=t[10],e[11]=t[11],e[12]=t[12],e[13]=t[13],e[14]=t[14],e[15]=t[15],e},i.copy=function(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.fromValues=function(t,e,r,i,o,a,s,l,u,c,h,f,d,p,g,m){var v=new n.ARRAY_TYPE(16);return v[0]=t,v[1]=e,v[2]=r,v[3]=i,v[4]=o,v[5]=a,v[6]=s,v[7]=l,v[8]=u,v[9]=c,v[10]=h,v[11]=f,v[12]=d,v[13]=p,v[14]=g,v[15]=m,v},i.set=function(t,e,r,n,i,o,a,s,l,u,c,h,f,d,p,g,m){return t[0]=e,t[1]=r,t[2]=n,t[3]=i,t[4]=o,t[5]=a,t[6]=s,t[7]=l,t[8]=u,t[9]=c,t[10]=h,t[11]=f,t[12]=d,t[13]=p,t[14]=g,t[15]=m,t},i.identity=function(t){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.scalar.transpose=function(t,e){if(t===e){var r=e[1],n=e[2],i=e[3],o=e[6],a=e[7],s=e[11];t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=r,t[6]=e[9],t[7]=e[13],t[8]=n,t[9]=o,t[11]=e[14],t[12]=i,t[13]=a,t[14]=s}else t[0]=e[0],t[1]=e[4],t[2]=e[8],t[3]=e[12],t[4]=e[1],t[5]=e[5],t[6]=e[9],t[7]=e[13],t[8]=e[2],t[9]=e[6],t[10]=e[10],t[11]=e[14],t[12]=e[3],t[13]=e[7],t[14]=e[11],t[15]=e[15];return t},i.SIMD.transpose=function(t,e){var r,n,i,o,a,s,l,u,c,h;return r=SIMD.Float32x4.load(e,0),n=SIMD.Float32x4.load(e,4),i=SIMD.Float32x4.load(e,8),o=SIMD.Float32x4.load(e,12),a=SIMD.Float32x4.shuffle(r,n,0,1,4,5),s=SIMD.Float32x4.shuffle(i,o,0,1,4,5),l=SIMD.Float32x4.shuffle(a,s,0,2,4,6),u=SIMD.Float32x4.shuffle(a,s,1,3,5,7),SIMD.Float32x4.store(t,0,l),SIMD.Float32x4.store(t,4,u),a=SIMD.Float32x4.shuffle(r,n,2,3,6,7),s=SIMD.Float32x4.shuffle(i,o,2,3,6,7),c=SIMD.Float32x4.shuffle(a,s,0,2,4,6),h=SIMD.Float32x4.shuffle(a,s,1,3,5,7),SIMD.Float32x4.store(t,8,c),SIMD.Float32x4.store(t,12,h),t},i.transpose=n.USE_SIMD?i.SIMD.transpose:i.scalar.transpose,i.scalar.invert=function(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],h=e[9],f=e[10],d=e[11],p=e[12],g=e[13],m=e[14],v=e[15],y=r*s-n*a,b=r*l-i*a,x=r*u-o*a,_=n*l-i*s,w=n*u-o*s,M=i*u-o*l,k=c*g-h*p,A=c*m-f*p,T=c*v-d*p,E=h*m-f*g,S=h*v-d*g,L=f*v-d*m,z=y*L-b*S+x*E+_*T-w*A+M*k;return z?(z=1/z,t[0]=(s*L-l*S+u*E)*z,t[1]=(i*S-n*L-o*E)*z,t[2]=(g*M-m*w+v*_)*z,t[3]=(f*w-h*M-d*_)*z,t[4]=(l*T-a*L-u*A)*z,t[5]=(r*L-i*T+o*A)*z,t[6]=(m*x-p*M-v*b)*z,t[7]=(c*M-f*x+d*b)*z,t[8]=(a*S-s*T+u*k)*z,t[9]=(n*T-r*S-o*k)*z,t[10]=(p*w-g*x+v*y)*z,t[11]=(h*x-c*w-d*y)*z,t[12]=(s*A-a*E-l*k)*z,t[13]=(r*E-n*A+i*k)*z,t[14]=(g*b-p*_-m*y)*z,t[15]=(c*_-h*b+f*y)*z,t):null},i.SIMD.invert=function(t,e){var r,n,i,o,a,s,l,u,c,h,f=SIMD.Float32x4.load(e,0),d=SIMD.Float32x4.load(e,4),p=SIMD.Float32x4.load(e,8),g=SIMD.Float32x4.load(e,12);return a=SIMD.Float32x4.shuffle(f,d,0,1,4,5),n=SIMD.Float32x4.shuffle(p,g,0,1,4,5),r=SIMD.Float32x4.shuffle(a,n,0,2,4,6),n=SIMD.Float32x4.shuffle(n,a,1,3,5,7),a=SIMD.Float32x4.shuffle(f,d,2,3,6,7),o=SIMD.Float32x4.shuffle(p,g,2,3,6,7),i=SIMD.Float32x4.shuffle(a,o,0,2,4,6),o=SIMD.Float32x4.shuffle(o,a,1,3,5,7),a=SIMD.Float32x4.mul(i,o),a=SIMD.Float32x4.swizzle(a,1,0,3,2),s=SIMD.Float32x4.mul(n,a),l=SIMD.Float32x4.mul(r,a),a=SIMD.Float32x4.swizzle(a,2,3,0,1),s=SIMD.Float32x4.sub(SIMD.Float32x4.mul(n,a),s),l=SIMD.Float32x4.sub(SIMD.Float32x4.mul(r,a),l),l=SIMD.Float32x4.swizzle(l,2,3,0,1),a=SIMD.Float32x4.mul(n,i),a=SIMD.Float32x4.swizzle(a,1,0,3,2),s=SIMD.Float32x4.add(SIMD.Float32x4.mul(o,a),s),c=SIMD.Float32x4.mul(r,a),a=SIMD.Float32x4.swizzle(a,2,3,0,1),s=SIMD.Float32x4.sub(s,SIMD.Float32x4.mul(o,a)),c=SIMD.Float32x4.sub(SIMD.Float32x4.mul(r,a),c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),a=SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(n,2,3,0,1),o),a=SIMD.Float32x4.swizzle(a,1,0,3,2),i=SIMD.Float32x4.swizzle(i,2,3,0,1),s=SIMD.Float32x4.add(SIMD.Float32x4.mul(i,a),s),u=SIMD.Float32x4.mul(r,a),a=SIMD.Float32x4.swizzle(a,2,3,0,1),s=SIMD.Float32x4.sub(s,SIMD.Float32x4.mul(i,a)),u=SIMD.Float32x4.sub(SIMD.Float32x4.mul(r,a),u),u=SIMD.Float32x4.swizzle(u,2,3,0,1),a=SIMD.Float32x4.mul(r,n),a=SIMD.Float32x4.swizzle(a,1,0,3,2),u=SIMD.Float32x4.add(SIMD.Float32x4.mul(o,a),u),c=SIMD.Float32x4.sub(SIMD.Float32x4.mul(i,a),c),a=SIMD.Float32x4.swizzle(a,2,3,0,1),u=SIMD.Float32x4.sub(SIMD.Float32x4.mul(o,a),u),c=SIMD.Float32x4.sub(c,SIMD.Float32x4.mul(i,a)),a=SIMD.Float32x4.mul(r,o),a=SIMD.Float32x4.swizzle(a,1,0,3,2),l=SIMD.Float32x4.sub(l,SIMD.Float32x4.mul(i,a)),u=SIMD.Float32x4.add(SIMD.Float32x4.mul(n,a),u),a=SIMD.Float32x4.swizzle(a,2,3,0,1),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(i,a),l),u=SIMD.Float32x4.sub(u,SIMD.Float32x4.mul(n,a)),a=SIMD.Float32x4.mul(r,i),a=SIMD.Float32x4.swizzle(a,1,0,3,2),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(o,a),l),c=SIMD.Float32x4.sub(c,SIMD.Float32x4.mul(n,a)),a=SIMD.Float32x4.swizzle(a,2,3,0,1),l=SIMD.Float32x4.sub(l,SIMD.Float32x4.mul(o,a)),c=SIMD.Float32x4.add(SIMD.Float32x4.mul(n,a),c),h=SIMD.Float32x4.mul(r,s),h=SIMD.Float32x4.add(SIMD.Float32x4.swizzle(h,2,3,0,1),h),h=SIMD.Float32x4.add(SIMD.Float32x4.swizzle(h,1,0,3,2),h),a=SIMD.Float32x4.reciprocalApproximation(h),h=SIMD.Float32x4.sub(SIMD.Float32x4.add(a,a),SIMD.Float32x4.mul(h,SIMD.Float32x4.mul(a,a))),(h=SIMD.Float32x4.swizzle(h,0,0,0,0))?(SIMD.Float32x4.store(t,0,SIMD.Float32x4.mul(h,s)),SIMD.Float32x4.store(t,4,SIMD.Float32x4.mul(h,l)),SIMD.Float32x4.store(t,8,SIMD.Float32x4.mul(h,u)),SIMD.Float32x4.store(t,12,SIMD.Float32x4.mul(h,c)),t):null},i.invert=n.USE_SIMD?i.SIMD.invert:i.scalar.invert,i.scalar.adjoint=function(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=e[4],s=e[5],l=e[6],u=e[7],c=e[8],h=e[9],f=e[10],d=e[11],p=e[12],g=e[13],m=e[14],v=e[15];return t[0]=s*(f*v-d*m)-h*(l*v-u*m)+g*(l*d-u*f),t[1]=-(n*(f*v-d*m)-h*(i*v-o*m)+g*(i*d-o*f)),t[2]=n*(l*v-u*m)-s*(i*v-o*m)+g*(i*u-o*l),t[3]=-(n*(l*d-u*f)-s*(i*d-o*f)+h*(i*u-o*l)),t[4]=-(a*(f*v-d*m)-c*(l*v-u*m)+p*(l*d-u*f)),t[5]=r*(f*v-d*m)-c*(i*v-o*m)+p*(i*d-o*f),t[6]=-(r*(l*v-u*m)-a*(i*v-o*m)+p*(i*u-o*l)),t[7]=r*(l*d-u*f)-a*(i*d-o*f)+c*(i*u-o*l),t[8]=a*(h*v-d*g)-c*(s*v-u*g)+p*(s*d-u*h),t[9]=-(r*(h*v-d*g)-c*(n*v-o*g)+p*(n*d-o*h)),t[10]=r*(s*v-u*g)-a*(n*v-o*g)+p*(n*u-o*s),t[11]=-(r*(s*d-u*h)-a*(n*d-o*h)+c*(n*u-o*s)),t[12]=-(a*(h*m-f*g)-c*(s*m-l*g)+p*(s*f-l*h)),t[13]=r*(h*m-f*g)-c*(n*m-i*g)+p*(n*f-i*h),t[14]=-(r*(s*m-l*g)-a*(n*m-i*g)+p*(n*l-i*s)),t[15]=r*(s*f-l*h)-a*(n*f-i*h)+c*(n*l-i*s),t},i.SIMD.adjoint=function(t,e){var r,n,i,o,a,s,l,u,c,h,f,d,p,r=SIMD.Float32x4.load(e,0),n=SIMD.Float32x4.load(e,4),i=SIMD.Float32x4.load(e,8),o=SIMD.Float32x4.load(e,12);return c=SIMD.Float32x4.shuffle(r,n,0,1,4,5),s=SIMD.Float32x4.shuffle(i,o,0,1,4,5),a=SIMD.Float32x4.shuffle(c,s,0,2,4,6),s=SIMD.Float32x4.shuffle(s,c,1,3,5,7),c=SIMD.Float32x4.shuffle(r,n,2,3,6,7),u=SIMD.Float32x4.shuffle(i,o,2,3,6,7),l=SIMD.Float32x4.shuffle(c,u,0,2,4,6),u=SIMD.Float32x4.shuffle(u,c,1,3,5,7),c=SIMD.Float32x4.mul(l,u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),h=SIMD.Float32x4.mul(s,c),f=SIMD.Float32x4.mul(a,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),h=SIMD.Float32x4.sub(SIMD.Float32x4.mul(s,c),h),f=SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,c),f),f=SIMD.Float32x4.swizzle(f,2,3,0,1),c=SIMD.Float32x4.mul(s,l),c=SIMD.Float32x4.swizzle(c,1,0,3,2),h=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),h),p=SIMD.Float32x4.mul(a,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),h=SIMD.Float32x4.sub(h,SIMD.Float32x4.mul(u,c)),p=SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,c),p),p=SIMD.Float32x4.swizzle(p,2,3,0,1),c=SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,2,3,0,1),u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),l=SIMD.Float32x4.swizzle(l,2,3,0,1),h=SIMD.Float32x4.add(SIMD.Float32x4.mul(l,c),h),d=SIMD.Float32x4.mul(a,c),c=SIMD.Float32x4.swizzle(c,2,3,0,1),h=SIMD.Float32x4.sub(h,SIMD.Float32x4.mul(l,c)),d=SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,c),d),d=SIMD.Float32x4.swizzle(d,2,3,0,1),c=SIMD.Float32x4.mul(a,s),c=SIMD.Float32x4.swizzle(c,1,0,3,2),d=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),d),p=SIMD.Float32x4.sub(SIMD.Float32x4.mul(l,c),p),c=SIMD.Float32x4.swizzle(c,2,3,0,1),d=SIMD.Float32x4.sub(SIMD.Float32x4.mul(u,c),d),p=SIMD.Float32x4.sub(p,SIMD.Float32x4.mul(l,c)),c=SIMD.Float32x4.mul(a,u),c=SIMD.Float32x4.swizzle(c,1,0,3,2),f=SIMD.Float32x4.sub(f,SIMD.Float32x4.mul(l,c)),d=SIMD.Float32x4.add(SIMD.Float32x4.mul(s,c),d),c=SIMD.Float32x4.swizzle(c,2,3,0,1),f=SIMD.Float32x4.add(SIMD.Float32x4.mul(l,c),f),d=SIMD.Float32x4.sub(d,SIMD.Float32x4.mul(s,c)),c=SIMD.Float32x4.mul(a,l),c=SIMD.Float32x4.swizzle(c,1,0,3,2),f=SIMD.Float32x4.add(SIMD.Float32x4.mul(u,c),f),p=SIMD.Float32x4.sub(p,SIMD.Float32x4.mul(s,c)),c=SIMD.Float32x4.swizzle(c,2,3,0,1),f=SIMD.Float32x4.sub(f,SIMD.Float32x4.mul(u,c)),p=SIMD.Float32x4.add(SIMD.Float32x4.mul(s,c),p),SIMD.Float32x4.store(t,0,h),SIMD.Float32x4.store(t,4,f),SIMD.Float32x4.store(t,8,d),SIMD.Float32x4.store(t,12,p),t},i.adjoint=n.USE_SIMD?i.SIMD.adjoint:i.scalar.adjoint,i.determinant=function(t){var e=t[0],r=t[1],n=t[2],i=t[3],o=t[4],a=t[5],s=t[6],l=t[7],u=t[8],c=t[9],h=t[10],f=t[11],d=t[12],p=t[13],g=t[14],m=t[15],v=e*a-r*o,y=e*s-n*o,b=e*l-i*o,x=r*s-n*a,_=r*l-i*a,w=n*l-i*s,M=u*p-c*d,k=u*g-h*d,A=u*m-f*d,T=c*g-h*p,E=c*m-f*p,S=h*m-f*g;return v*S-y*E+b*T+x*A-_*k+w*M},i.SIMD.multiply=function(t,e,r){var n=SIMD.Float32x4.load(e,0),i=SIMD.Float32x4.load(e,4),o=SIMD.Float32x4.load(e,8),a=SIMD.Float32x4.load(e,12),s=SIMD.Float32x4.load(r,0),l=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,0,0,0,0),n),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(s,3,3,3,3),a))));SIMD.Float32x4.store(t,0,l);var u=SIMD.Float32x4.load(r,4),c=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,0,0,0,0),n),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(u,3,3,3,3),a))));SIMD.Float32x4.store(t,4,c);var h=SIMD.Float32x4.load(r,8),f=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(h,0,0,0,0),n),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(h,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(h,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(h,3,3,3,3),a))));SIMD.Float32x4.store(t,8,f);var d=SIMD.Float32x4.load(r,12),p=SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,0,0,0,0),n),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,1,1,1,1),i),SIMD.Float32x4.add(SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,2,2,2,2),o),SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(d,3,3,3,3),a))));return SIMD.Float32x4.store(t,12,p),t},i.scalar.multiply=function(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],h=e[8],f=e[9],d=e[10],p=e[11],g=e[12],m=e[13],v=e[14],y=e[15],b=r[0],x=r[1],_=r[2],w=r[3];return t[0]=b*n+x*s+_*h+w*g,t[1]=b*i+x*l+_*f+w*m,t[2]=b*o+x*u+_*d+w*v,t[3]=b*a+x*c+_*p+w*y,b=r[4],x=r[5],_=r[6],w=r[7],t[4]=b*n+x*s+_*h+w*g,t[5]=b*i+x*l+_*f+w*m,t[6]=b*o+x*u+_*d+w*v,t[7]=b*a+x*c+_*p+w*y,b=r[8],x=r[9],_=r[10],w=r[11],t[8]=b*n+x*s+_*h+w*g,t[9]=b*i+x*l+_*f+w*m,t[10]=b*o+x*u+_*d+w*v,t[11]=b*a+x*c+_*p+w*y,b=r[12],x=r[13],_=r[14],w=r[15],t[12]=b*n+x*s+_*h+w*g,t[13]=b*i+x*l+_*f+w*m,t[14]=b*o+x*u+_*d+w*v,t[15]=b*a+x*c+_*p+w*y,t},i.multiply=n.USE_SIMD?i.SIMD.multiply:i.scalar.multiply,i.mul=i.multiply,i.scalar.translate=function(t,e,r){var n,i,o,a,s,l,u,c,h,f,d,p,g=r[0],m=r[1],v=r[2];return e===t?(t[12]=e[0]*g+e[4]*m+e[8]*v+e[12],t[13]=e[1]*g+e[5]*m+e[9]*v+e[13],t[14]=e[2]*g+e[6]*m+e[10]*v+e[14],t[15]=e[3]*g+e[7]*m+e[11]*v+e[15]):(n=e[0],i=e[1],o=e[2],a=e[3],s=e[4],l=e[5],u=e[6],c=e[7],h=e[8],f=e[9],d=e[10],p=e[11],t[0]=n,t[1]=i,t[2]=o,t[3]=a,t[4]=s,t[5]=l,t[6]=u,t[7]=c,t[8]=h,t[9]=f,t[10]=d,t[11]=p,t[12]=n*g+s*m+h*v+e[12],t[13]=i*g+l*m+f*v+e[13],t[14]=o*g+u*m+d*v+e[14],t[15]=a*g+c*m+p*v+e[15]),t},i.SIMD.translate=function(t,e,r){var n=SIMD.Float32x4.load(e,0),i=SIMD.Float32x4.load(e,4),o=SIMD.Float32x4.load(e,8),a=SIMD.Float32x4.load(e,12),s=SIMD.Float32x4(r[0],r[1],r[2],0);e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11]),n=SIMD.Float32x4.mul(n,SIMD.Float32x4.swizzle(s,0,0,0,0)),i=SIMD.Float32x4.mul(i,SIMD.Float32x4.swizzle(s,1,1,1,1)),o=SIMD.Float32x4.mul(o,SIMD.Float32x4.swizzle(s,2,2,2,2));var l=SIMD.Float32x4.add(n,SIMD.Float32x4.add(i,SIMD.Float32x4.add(o,a)));return SIMD.Float32x4.store(t,12,l),t},i.translate=n.USE_SIMD?i.SIMD.translate:i.scalar.translate,i.scalar.scale=function(t,e,r){var n=r[0],i=r[1],o=r[2];return t[0]=e[0]*n,t[1]=e[1]*n,t[2]=e[2]*n,t[3]=e[3]*n,t[4]=e[4]*i,t[5]=e[5]*i,t[6]=e[6]*i,t[7]=e[7]*i,t[8]=e[8]*o,t[9]=e[9]*o,t[10]=e[10]*o,t[11]=e[11]*o,t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.SIMD.scale=function(t,e,r){var n,i,o,a=SIMD.Float32x4(r[0],r[1],r[2],0);return n=SIMD.Float32x4.load(e,0),SIMD.Float32x4.store(t,0,SIMD.Float32x4.mul(n,SIMD.Float32x4.swizzle(a,0,0,0,0))),i=SIMD.Float32x4.load(e,4),SIMD.Float32x4.store(t,4,SIMD.Float32x4.mul(i,SIMD.Float32x4.swizzle(a,1,1,1,1))),o=SIMD.Float32x4.load(e,8),SIMD.Float32x4.store(t,8,SIMD.Float32x4.mul(o,SIMD.Float32x4.swizzle(a,2,2,2,2))),t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15],t},i.scale=n.USE_SIMD?i.SIMD.scale:i.scalar.scale,i.rotate=function(t,e,r,i){var o,a,s,l,u,c,h,f,d,p,g,m,v,y,b,x,_,w,M,k,A,T,E,S,L=i[0],z=i[1],I=i[2],C=Math.sqrt(L*L+z*z+I*I);return Math.abs(C)<n.EPSILON?null:(C=1/C,L*=C,z*=C,I*=C,o=Math.sin(r),a=Math.cos(r),s=1-a,l=e[0],u=e[1],c=e[2],h=e[3],f=e[4],d=e[5],p=e[6],g=e[7],m=e[8],v=e[9],y=e[10],b=e[11],x=L*L*s+a,_=z*L*s+I*o,w=I*L*s-z*o,M=L*z*s-I*o,k=z*z*s+a,A=I*z*s+L*o,T=L*I*s+z*o,E=z*I*s-L*o,S=I*I*s+a,t[0]=l*x+f*_+m*w,t[1]=u*x+d*_+v*w,t[2]=c*x+p*_+y*w,t[3]=h*x+g*_+b*w,t[4]=l*M+f*k+m*A,t[5]=u*M+d*k+v*A,t[6]=c*M+p*k+y*A,t[7]=h*M+g*k+b*A,t[8]=l*T+f*E+m*S,t[9]=u*T+d*E+v*S,t[10]=c*T+p*E+y*S,t[11]=h*T+g*E+b*S,e!==t&&(t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t)},i.scalar.rotateX=function(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[4],a=e[5],s=e[6],l=e[7],u=e[8],c=e[9],h=e[10],f=e[11];return e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[4]=o*i+u*n,t[5]=a*i+c*n,t[6]=s*i+h*n,t[7]=l*i+f*n,t[8]=u*i-o*n,t[9]=c*i-a*n,t[10]=h*i-s*n,t[11]=f*i-l*n,t},i.SIMD.rotateX=function(t,e,r){var n=SIMD.Float32x4.splat(Math.sin(r)),i=SIMD.Float32x4.splat(Math.cos(r));e!==t&&(t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var o=SIMD.Float32x4.load(e,4),a=SIMD.Float32x4.load(e,8);return SIMD.Float32x4.store(t,4,SIMD.Float32x4.add(SIMD.Float32x4.mul(o,i),SIMD.Float32x4.mul(a,n))),SIMD.Float32x4.store(t,8,SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,i),SIMD.Float32x4.mul(o,n))),t},i.rotateX=n.USE_SIMD?i.SIMD.rotateX:i.scalar.rotateX,i.scalar.rotateY=function(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[0],a=e[1],s=e[2],l=e[3],u=e[8],c=e[9],h=e[10],f=e[11];return e!==t&&(t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i-u*n,t[1]=a*i-c*n,t[2]=s*i-h*n,t[3]=l*i-f*n,t[8]=o*n+u*i,t[9]=a*n+c*i,t[10]=s*n+h*i,t[11]=l*n+f*i,t},i.SIMD.rotateY=function(t,e,r){var n=SIMD.Float32x4.splat(Math.sin(r)),i=SIMD.Float32x4.splat(Math.cos(r));e!==t&&(t[4]=e[4],t[5]=e[5],t[6]=e[6],t[7]=e[7],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var o=SIMD.Float32x4.load(e,0),a=SIMD.Float32x4.load(e,8);return SIMD.Float32x4.store(t,0,SIMD.Float32x4.sub(SIMD.Float32x4.mul(o,i),SIMD.Float32x4.mul(a,n))),SIMD.Float32x4.store(t,8,SIMD.Float32x4.add(SIMD.Float32x4.mul(o,n),SIMD.Float32x4.mul(a,i))),t},i.rotateY=n.USE_SIMD?i.SIMD.rotateY:i.scalar.rotateY,i.scalar.rotateZ=function(t,e,r){var n=Math.sin(r),i=Math.cos(r),o=e[0],a=e[1],s=e[2],l=e[3],u=e[4],c=e[5],h=e[6],f=e[7];return e!==t&&(t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]),t[0]=o*i+u*n,t[1]=a*i+c*n,t[2]=s*i+h*n,t[3]=l*i+f*n,t[4]=u*i-o*n,t[5]=c*i-a*n,t[6]=h*i-s*n,t[7]=f*i-l*n,t},i.SIMD.rotateZ=function(t,e,r){var n=SIMD.Float32x4.splat(Math.sin(r)),i=SIMD.Float32x4.splat(Math.cos(r));e!==t&&(t[8]=e[8],t[9]=e[9],t[10]=e[10],t[11]=e[11],t[12]=e[12],t[13]=e[13],t[14]=e[14],t[15]=e[15]);var o=SIMD.Float32x4.load(e,0),a=SIMD.Float32x4.load(e,4);return SIMD.Float32x4.store(t,0,SIMD.Float32x4.add(SIMD.Float32x4.mul(o,i),SIMD.Float32x4.mul(a,n))),SIMD.Float32x4.store(t,4,SIMD.Float32x4.sub(SIMD.Float32x4.mul(a,i),SIMD.Float32x4.mul(o,n))),t},i.rotateZ=n.USE_SIMD?i.SIMD.rotateZ:i.scalar.rotateZ,i.fromTranslation=function(t,e){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=e[0],t[13]=e[1],t[14]=e[2],t[15]=1,t},i.fromScaling=function(t,e){return t[0]=e[0],t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=e[1],t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=e[2],t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromRotation=function(t,e,r){var i,o,a,s=r[0],l=r[1],u=r[2],c=Math.sqrt(s*s+l*l+u*u);return Math.abs(c)<n.EPSILON?null:(c=1/c,s*=c,l*=c,u*=c,i=Math.sin(e),o=Math.cos(e),a=1-o,t[0]=s*s*a+o,t[1]=l*s*a+u*i,t[2]=u*s*a-l*i,t[3]=0,t[4]=s*l*a-u*i,t[5]=l*l*a+o,t[6]=u*l*a+s*i,t[7]=0,t[8]=s*u*a+l*i,t[9]=l*u*a-s*i,t[10]=u*u*a+o,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t)},i.fromXRotation=function(t,e){var r=Math.sin(e),n=Math.cos(e);return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=n,t[6]=r,t[7]=0,t[8]=0,t[9]=-r,t[10]=n,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromYRotation=function(t,e){var r=Math.sin(e),n=Math.cos(e);return t[0]=n,t[1]=0,t[2]=-r,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=r,t[9]=0,t[10]=n,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromZRotation=function(t,e){var r=Math.sin(e),n=Math.cos(e);return t[0]=n,t[1]=r,t[2]=0,t[3]=0,t[4]=-r,t[5]=n,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.fromRotationTranslation=function(t,e,r){var n=e[0],i=e[1],o=e[2],a=e[3],s=n+n,l=i+i,u=o+o,c=n*s,h=n*l,f=n*u,d=i*l,p=i*u,g=o*u,m=a*s,v=a*l,y=a*u;return t[0]=1-(d+g),t[1]=h+y,t[2]=f-v,t[3]=0,t[4]=h-y,t[5]=1-(c+g),t[6]=p+m,t[7]=0,t[8]=f+v,t[9]=p-m,t[10]=1-(c+d),t[11]=0,t[12]=r[0],t[13]=r[1],t[14]=r[2],t[15]=1,t},i.getTranslation=function(t,e){return t[0]=e[12],t[1]=e[13],t[2]=e[14],t},i.getRotation=function(t,e){var r=e[0]+e[5]+e[10],n=0;return r>0?(n=2*Math.sqrt(r+1),t[3]=.25*n,t[0]=(e[6]-e[9])/n,t[1]=(e[8]-e[2])/n,t[2]=(e[1]-e[4])/n):e[0]>e[5]&e[0]>e[10]?(n=2*Math.sqrt(1+e[0]-e[5]-e[10]),t[3]=(e[6]-e[9])/n,t[0]=.25*n,t[1]=(e[1]+e[4])/n,t[2]=(e[8]+e[2])/n):e[5]>e[10]?(n=2*Math.sqrt(1+e[5]-e[0]-e[10]),t[3]=(e[8]-e[2])/n,t[0]=(e[1]+e[4])/n,t[1]=.25*n,t[2]=(e[6]+e[9])/n):(n=2*Math.sqrt(1+e[10]-e[0]-e[5]),t[3]=(e[1]-e[4])/n,t[0]=(e[8]+e[2])/n,t[1]=(e[6]+e[9])/n,t[2]=.25*n),t},i.fromRotationTranslationScale=function(t,e,r,n){var i=e[0],o=e[1],a=e[2],s=e[3],l=i+i,u=o+o,c=a+a,h=i*l,f=i*u,d=i*c,p=o*u,g=o*c,m=a*c,v=s*l,y=s*u,b=s*c,x=n[0],_=n[1],w=n[2];return t[0]=(1-(p+m))*x,t[1]=(f+b)*x,t[2]=(d-y)*x,t[3]=0,t[4]=(f-b)*_,t[5]=(1-(h+m))*_,t[6]=(g+v)*_,t[7]=0,t[8]=(d+y)*w,t[9]=(g-v)*w,t[10]=(1-(h+p))*w,t[11]=0,t[12]=r[0],t[13]=r[1],t[14]=r[2],t[15]=1,t},i.fromRotationTranslationScaleOrigin=function(t,e,r,n,i){var o=e[0],a=e[1],s=e[2],l=e[3],u=o+o,c=a+a,h=s+s,f=o*u,d=o*c,p=o*h,g=a*c,m=a*h,v=s*h,y=l*u,b=l*c,x=l*h,_=n[0],w=n[1],M=n[2],k=i[0],A=i[1],T=i[2];return t[0]=(1-(g+v))*_,t[1]=(d+x)*_,t[2]=(p-b)*_,t[3]=0,t[4]=(d-x)*w,t[5]=(1-(f+v))*w,t[6]=(m+y)*w,t[7]=0,t[8]=(p+b)*M,t[9]=(m-y)*M,t[10]=(1-(f+g))*M,t[11]=0,t[12]=r[0]+k-(t[0]*k+t[4]*A+t[8]*T),t[13]=r[1]+A-(t[1]*k+t[5]*A+t[9]*T),t[14]=r[2]+T-(t[2]*k+t[6]*A+t[10]*T),t[15]=1,t},i.fromQuat=function(t,e){var r=e[0],n=e[1],i=e[2],o=e[3],a=r+r,s=n+n,l=i+i,u=r*a,c=n*a,h=n*s,f=i*a,d=i*s,p=i*l,g=o*a,m=o*s,v=o*l;return t[0]=1-h-p,t[1]=c+v,t[2]=f-m,t[3]=0,t[4]=c-v,t[5]=1-u-p,t[6]=d+g,t[7]=0,t[8]=f+m,t[9]=d-g,t[10]=1-u-h,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t},i.frustum=function(t,e,r,n,i,o,a){var s=1/(r-e),l=1/(i-n),u=1/(o-a);return t[0]=2*o*s,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=2*o*l,t[6]=0,t[7]=0,t[8]=(r+e)*s,t[9]=(i+n)*l,t[10]=(a+o)*u,t[11]=-1,t[12]=0,t[13]=0,t[14]=a*o*2*u,t[15]=0,t},i.perspective=function(t,e,r,n,i){var o=1/Math.tan(e/2),a=1/(n-i);return t[0]=o/r,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=o,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=(i+n)*a,t[11]=-1,t[12]=0,t[13]=0,t[14]=2*i*n*a,t[15]=0,t},i.perspectiveFromFieldOfView=function(t,e,r,n){var i=Math.tan(e.upDegrees*Math.PI/180),o=Math.tan(e.downDegrees*Math.PI/180),a=Math.tan(e.leftDegrees*Math.PI/180),s=Math.tan(e.rightDegrees*Math.PI/180),l=2/(a+s),u=2/(i+o);return t[0]=l,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=u,t[6]=0,t[7]=0,t[8]=-((a-s)*l*.5),t[9]=(i-o)*u*.5,t[10]=n/(r-n),t[11]=-1,t[12]=0,t[13]=0,t[14]=n*r/(r-n),t[15]=0,t},i.ortho=function(t,e,r,n,i,o,a){var s=1/(e-r),l=1/(n-i),u=1/(o-a);return 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Math.sqrt(Math.pow(t[0],2)+Math.pow(t[1],2)+Math.pow(t[2],2)+Math.pow(t[3],2)+Math.pow(t[4],2)+Math.pow(t[5],2)+Math.pow(t[6],2)+Math.pow(t[7],2)+Math.pow(t[8],2)+Math.pow(t[9],2)+Math.pow(t[10],2)+Math.pow(t[11],2)+Math.pow(t[12],2)+Math.pow(t[13],2)+Math.pow(t[14],2)+Math.pow(t[15],2))},i.add=function(t,e,r){return t[0]=e[0]+r[0],t[1]=e[1]+r[1],t[2]=e[2]+r[2],t[3]=e[3]+r[3],t[4]=e[4]+r[4],t[5]=e[5]+r[5],t[6]=e[6]+r[6],t[7]=e[7]+r[7],t[8]=e[8]+r[8],t[9]=e[9]+r[9],t[10]=e[10]+r[10],t[11]=e[11]+r[11],t[12]=e[12]+r[12],t[13]=e[13]+r[13],t[14]=e[14]+r[14],t[15]=e[15]+r[15],t},i.subtract=function(t,e,r){return t[0]=e[0]-r[0],t[1]=e[1]-r[1],t[2]=e[2]-r[2],t[3]=e[3]-r[3],t[4]=e[4]-r[4],t[5]=e[5]-r[5],t[6]=e[6]-r[6],t[7]=e[7]-r[7],t[8]=e[8]-r[8],t[9]=e[9]-r[9],t[10]=e[10]-r[10],t[11]=e[11]-r[11],t[12]=e[12]-r[12],t[13]=e[13]-r[13],t[14]=e[14]-r[14],t[15]=e[15]-r[15],t},i.sub=i.subtract,i.multiplyScalar=function(t,e,r){return 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texture;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(f_normal);\n  vec3 L = normalize(f_lightDirection);\n  vec3 V = normalize(f_eyeDirection);\n  \n  if(!gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = cookTorranceSpecular_1_1(L, V, N, roughness, fresnel);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = f_color * texture2D(texture, f_uv);\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = litColor * opacity;\n}",o="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model, view, projection;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_color = color;\n  f_data  = position;\n  f_uv    = uv;\n}",a="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 clipBounds[2];\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}",s="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\nattribute float pointSize;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position = projection * view * model * vec4(position, 1.0);\n  }\n  gl_PointSize = pointSize;\n  f_color = color;\n  f_uv = uv;\n}",l="precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec2 pointR = gl_PointCoord.xy - vec2(0.5,0.5);\n  if(dot(pointR, pointR) > 0.25) {\n    discard;\n  }\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}",u="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_id        = id;\n  f_position  = position;\n}",c="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3  clipBounds[2];\nuniform float pickId;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(f_position, clipBounds[0])) || \n     any(greaterThan(f_position, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId, f_id.xyz);\n}",h="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3  position;\nattribute float pointSize;\nattribute vec4  id;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position  = projection * view * model * vec4(position, 1.0);\n    gl_PointSize = pointSize;\n  }\n  f_id         = id;\n  f_position   = position;\n}",f="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n}",d="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 contourColor;\n\nvoid main() {\n  gl_FragColor = vec4(contourColor,1);\n}\n";r.meshShader={vertex:n,fragment:i,attributes:[{name:"position",type:"vec3"},{name:"normal",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"}]},r.wireShader={vertex:o,fragment:a,attributes:[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"}]},r.pointShader={vertex:s,fragment:l,attributes:[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"uv",type:"vec2"},{name:"pointSize",type:"float"}]},r.pickShader={vertex:u,fragment:c,attributes:[{name:"position",type:"vec3"},{name:"id",type:"vec4"}]},r.pointPickShader={vertex:h,fragment:c,attributes:[{name:"position",type:"vec3"},{name:"pointSize",type:"float"},{name:"id",type:"vec4"}]},r.contourShader={vertex:f,fragment:d,attributes:[{name:"position",type:"vec3"}]}},{}],166:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s,l,u,c,h,f,d,p,g,m,v,y,b,x,_,w,M,k,A,T){this.gl=t,this.cells=[],this.positions=[],this.intensity=[],this.texture=e,this.dirty=!0,this.triShader=r,this.lineShader=n,this.pointShader=i,this.pickShader=o,this.pointPickShader=a,this.contourShader=s,this.trianglePositions=l,this.triangleColors=c,this.triangleNormals=f,this.triangleUVs=h,this.triangleIds=u,this.triangleVAO=d,this.triangleCount=0,this.lineWidth=1,this.edgePositions=p,this.edgeColors=m,this.edgeUVs=v,this.edgeIds=g,this.edgeVAO=y,this.edgeCount=0,this.pointPositions=b,this.pointColors=_,this.pointUVs=w,this.pointSizes=M,this.pointIds=x,this.pointVAO=k,this.pointCount=0,this.contourLineWidth=1,this.contourPositions=A,this.contourVAO=T,this.contourCount=0,this.contourColor=[0,0,0],this.contourEnable=!0,this.pickId=1,this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.lightPosition=[1e5,1e5,0],this.ambientLight=.8,this.diffuseLight=.8,this.specularLight=2,this.roughness=.5,this.fresnel=1.5,this.opacity=1,this._model=D,this._view=D,this._projection=D,this._resolution=[1,1]}function i(t){for(var e=k({colormap:t,nshades:256,format:"rgba"}),r=new Uint8Array(1024),n=0;n<256;++n){for(var i=e[n],o=0;o<3;++o)r[4*n+o]=i[o];r[4*n+3]=255*i[3]}return M(r,[256,256,4],[4,0,1])}function o(t,e,r){for(var n=new Array(e),i=0;i<e;++i)n[i]=0;for(var o=t.length,i=0;i<o;++i)for(var a=t[i],s=0;s<a.length;++s)n[a[s]]=r[i];return n}function a(t){for(var e=t.length,r=new Array(e),n=0;n<e;++n)r[n]=t[n][2];return r}function s(t){var e=m(t,L);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e.attributes.normal.location=4,e}function l(t){var e=m(t,z);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e}function u(t){var e=m(t,I);return e.attributes.position.location=0,e.attributes.color.location=2,e.attributes.uv.location=3,e.attributes.pointSize.location=4,e}function c(t){var e=m(t,C);return e.attributes.position.location=0,e.attributes.id.location=1,e}function h(t){var e=m(t,P);return e.attributes.position.location=0,e.attributes.id.location=1,e.attributes.pointSize.location=4,e}function f(t){var e=m(t,R);return e.attributes.position.location=0,e}function d(t){var e=t.gl,r=s(e),i=l(e),o=u(e),a=c(e),d=h(e),p=f(e),g=b(e,M(new Uint8Array([255,255,255,255]),[1,1,4]));g.generateMipmap(),g.minFilter=e.LINEAR_MIPMAP_LINEAR,g.magFilter=e.LINEAR;var m=v(e),x=v(e),_=v(e),w=v(e),k=v(e),A=y(e,[{buffer:m,type:e.FLOAT,size:3},{buffer:k,type:e.UNSIGNED_BYTE,size:4,normalized:!0},{buffer:x,type:e.FLOAT,size:4},{buffer:_,type:e.FLOAT,size:2},{buffer:w,type:e.FLOAT,size:3}]),T=v(e),E=v(e),S=v(e),L=v(e),z=y(e,[{buffer:T,type:e.FLOAT,size:3},{buffer:L,type:e.UNSIGNED_BYTE,size:4,normalized:!0},{buffer:E,type:e.FLOAT,size:4},{buffer:S,type:e.FLOAT,size:2}]),I=v(e),C=v(e),P=v(e),R=v(e),D=v(e),O=y(e,[{buffer:I,type:e.FLOAT,size:3},{buffer:D,type:e.UNSIGNED_BYTE,size:4,normalized:!0},{buffer:C,type:e.FLOAT,size:4},{buffer:P,type:e.FLOAT,size:2},{buffer:R,type:e.FLOAT,size:1}]),F=v(e),j=y(e,[{buffer:F,type:e.FLOAT,size:3}]),N=new n(e,g,r,i,o,a,d,p,m,k,x,_,w,A,T,L,E,S,z,I,D,C,P,R,O,F,j);return N.update(t),N}var p=1e-6,g=1e-6,m=t("gl-shader"),v=t("gl-buffer"),y=t("gl-vao"),b=t("gl-texture2d"),x=t("normals"),_=t("gl-mat4/multiply"),w=t("gl-mat4/invert"),M=t("ndarray"),k=t("colormap"),A=t("simplicial-complex-contour"),T=t("typedarray-pool"),E=t("./lib/shaders"),S=t("./lib/closest-point"),L=E.meshShader,z=E.wireShader,I=E.pointShader,C=E.pickShader,P=E.pointPickShader,R=E.contourShader,D=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],O=n.prototype;O.isOpaque=function(){return this.opacity>=1},O.isTransparent=function(){return this.opacity<1},O.pickSlots=1,O.setPickBase=function(t){this.pickId=t},O.highlight=function(t){if(!t||!this.contourEnable)return void(this.contourCount=0);for(var e=A(this.cells,this.intensity,t.intensity),r=e.cells,n=e.vertexIds,i=e.vertexWeights,o=r.length,a=T.mallocFloat32(6*o),s=0,l=0;l<o;++l)for(var u=r[l],c=0;c<2;++c){var h=u[0];2===u.length&&(h=u[c]);for(var f=n[h][0],d=n[h][1],p=i[h],g=1-p,m=this.positions[f],v=this.positions[d],y=0;y<3;++y)a[s++]=p*m[y]+g*v[y]}this.contourCount=s/3|0,this.contourPositions.update(a.subarray(0,s)),T.free(a)},O.update=function(t){t=t||{};var e=this.gl;this.dirty=!0,"contourEnable"in t&&(this.contourEnable=t.contourEnable),"contourColor"in t&&(this.contourColor=t.contourColor),"lineWidth"in t&&(this.lineWidth=t.lineWidth),"lightPosition"in t&&(this.lightPosition=t.lightPosition),"opacity"in t&&(this.opacity=t.opacity),"ambient"in t&&(this.ambientLight=t.ambient),"diffuse"in t&&(this.diffuseLight=t.diffuse),"specular"in t&&(this.specularLight=t.specular),"roughness"in t&&(this.roughness=t.roughness),"fresnel"in t&&(this.fresnel=t.fresnel),t.texture?(this.texture.dispose(),this.texture=b(e,t.texture)):t.colormap&&(this.texture.shape=[256,256],this.texture.minFilter=e.LINEAR_MIPMAP_LINEAR,this.texture.magFilter=e.LINEAR,this.texture.setPixels(i(t.colormap)),this.texture.generateMipmap());var r=t.cells,n=t.positions;if(n&&r){var s=[],l=[],u=[],c=[],h=[],f=[],d=[],m=[],v=[],y=[],_=[],w=[],M=[],k=[];this.cells=r,this.positions=n;var A=t.vertexNormals,T=t.cellNormals,E=void 0===t.vertexNormalsEpsilon?p:t.vertexNormalsEpsilon,S=void 0===t.faceNormalsEpsilon?g:t.faceNormalsEpsilon;t.useFacetNormals&&!T&&(T=x.faceNormals(r,n,S)),T||A||(A=x.vertexNormals(r,n,E));var L=t.vertexColors,z=t.cellColors,I=t.meshColor||[1,1,1,1],C=t.vertexUVs,P=t.vertexIntensity,R=t.cellUVs,D=t.cellIntensity,O=1/0,F=-(1/0);if(!C&&!R)if(P)for(var j=0;j<P.length;++j){var N=P[j];O=Math.min(O,N),F=Math.max(F,N)}else if(D)for(var j=0;j<D.length;++j){var N=D[j];O=Math.min(O,N),F=Math.max(F,N)}else for(var j=0;j<n.length;++j){var N=n[j][2];O=Math.min(O,N),F=Math.max(F,N)}P?this.intensity=P:D?this.intensity=o(r,n.length,D):this.intensity=a(n);var B=t.pointSizes,U=t.pointSize||1;this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]];for(var j=0;j<n.length;++j)for(var V=n[j],q=0;q<3;++q)!isNaN(V[q])&&isFinite(V[q])&&(this.bounds[0][q]=Math.min(this.bounds[0][q],V[q]),this.bounds[1][q]=Math.max(this.bounds[1][q],V[q]));var G=0,H=0,X=0;t:for(var j=0;j<r.length;++j){var Y=r[j];switch(Y.length){case 1:for(var W=Y[0],V=n[W],q=0;q<3;++q)if(isNaN(V[q])||!isFinite(V[q]))continue t;y.push(V[0],V[1],V[2]);var Z;Z=L?L[W]:z?z[j]:I,3===Z.length?_.push(Z[0],Z[1],Z[2],1):_.push(Z[0],Z[1],Z[2],Z[3]);var K;K=C?C[W]:P?[(P[W]-O)/(F-O),0]:R?R[j]:D?[(D[j]-O)/(F-O),0]:[(V[2]-O)/(F-O),0],w.push(K[0],K[1]),B?M.push(B[W]):M.push(U),k.push(j),X+=1;break;case 2:for(var q=0;q<2;++q)for(var W=Y[q],V=n[W],J=0;J<3;++J)if(isNaN(V[J])||!isFinite(V[J]))continue t;for(var q=0;q<2;++q){var W=Y[q],V=n[W];f.push(V[0],V[1],V[2]);var Z;Z=L?L[W]:z?z[j]:I,3===Z.length?d.push(Z[0],Z[1],Z[2],1):d.push(Z[0],Z[1],Z[2],Z[3]);var K;K=C?C[W]:P?[(P[W]-O)/(F-O),0]:R?R[j]:D?[(D[j]-O)/(F-O),0]:[(V[2]-O)/(F-O),0],m.push(K[0],K[1]),v.push(j)}H+=1;break;case 3:for(var q=0;q<3;++q)for(var W=Y[q],V=n[W],J=0;J<3;++J)if(isNaN(V[J])||!isFinite(V[J]))continue t;for(var q=0;q<3;++q){var W=Y[q],V=n[W];s.push(V[0],V[1],V[2]);var Z;Z=L?L[W]:z?z[j]:I,3===Z.length?l.push(Z[0],Z[1],Z[2],1):l.push(Z[0],Z[1],Z[2],Z[3]);var K;K=C?C[W]:P?[(P[W]-O)/(F-O),0]:R?R[j]:D?[(D[j]-O)/(F-O),0]:[(V[2]-O)/(F-O),0],c.push(K[0],K[1]);var $;$=A?A[W]:T[j],u.push($[0],$[1],$[2]),h.push(j)}G+=1}}this.pointCount=X,this.edgeCount=H,this.triangleCount=G,this.pointPositions.update(y),this.pointColors.update(_),this.pointUVs.update(w),this.pointSizes.update(M),this.pointIds.update(new Uint32Array(k)),this.edgePositions.update(f),this.edgeColors.update(d),this.edgeUVs.update(m),this.edgeIds.update(new Uint32Array(v)),this.trianglePositions.update(s),this.triangleColors.update(l),this.triangleUVs.update(c),this.triangleNormals.update(u),this.triangleIds.update(new Uint32Array(h))}},O.drawTransparent=O.draw=function(t){t=t||{};for(var e=this.gl,r=t.model||D,n=t.view||D,i=t.projection||D,o=[[-1e6,-1e6,-1e6],[1e6,1e6,1e6]],a=0;a<3;++a)o[0][a]=Math.max(o[0][a],this.clipBounds[0][a]),o[1][a]=Math.min(o[1][a],this.clipBounds[1][a]);var s={model:r,view:n,projection:i,clipBounds:o,kambient:this.ambientLight,kdiffuse:this.diffuseLight,kspecular:this.specularLight,roughness:this.roughness,fresnel:this.fresnel,eyePosition:[0,0,0],lightPosition:[0,0,0],opacity:this.opacity,contourColor:this.contourColor,texture:0};this.texture.bind(0);var l=new Array(16);_(l,s.view,s.model),_(l,s.projection,l),w(l,l);for(var a=0;a<3;++a)s.eyePosition[a]=l[12+a]/l[15];for(var u=l[15],a=0;a<3;++a)u+=this.lightPosition[a]*l[4*a+3];for(var a=0;a<3;++a){for(var c=l[12+a],h=0;h<3;++h)c+=l[4*h+a]*this.lightPosition[h];s.lightPosition[a]=c/u}if(this.triangleCount>0){var f=this.triShader;f.bind(),f.uniforms=s,this.triangleVAO.bind(),e.drawArrays(e.TRIANGLES,0,3*this.triangleCount),this.triangleVAO.unbind()}if(this.edgeCount>0&&this.lineWidth>0){var f=this.lineShader;f.bind(),f.uniforms=s,this.edgeVAO.bind(),e.lineWidth(this.lineWidth),e.drawArrays(e.LINES,0,2*this.edgeCount),this.edgeVAO.unbind()}if(this.pointCount>0){var f=this.pointShader;f.bind(),f.uniforms=s,this.pointVAO.bind(),e.drawArrays(e.POINTS,0,this.pointCount),this.pointVAO.unbind()}if(this.contourEnable&&this.contourCount>0&&this.contourLineWidth>0){var f=this.contourShader;f.bind(),f.uniforms=s,this.contourVAO.bind(),e.drawArrays(e.LINES,0,this.contourCount),this.contourVAO.unbind()}},O.drawPick=function(t){t=t||{};for(var e=this.gl,r=t.model||D,n=t.view||D,i=t.projection||D,o=[[-1e6,-1e6,-1e6],[1e6,1e6,1e6]],a=0;a<3;++a)o[0][a]=Math.max(o[0][a],this.clipBounds[0][a]),o[1][a]=Math.min(o[1][a],this.clipBounds[1][a]);this._model=[].slice.call(r),this._view=[].slice.call(n),this._projection=[].slice.call(i),this._resolution=[e.drawingBufferWidth,e.drawingBufferHeight];var s={model:r,view:n,projection:i,clipBounds:o,pickId:this.pickId/255},l=this.pickShader;if(l.bind(),l.uniforms=s,this.triangleCount>0&&(this.triangleVAO.bind(),e.drawArrays(e.TRIANGLES,0,3*this.triangleCount),this.triangleVAO.unbind()),this.edgeCount>0&&(this.edgeVAO.bind(),e.lineWidth(this.lineWidth),e.drawArrays(e.LINES,0,2*this.edgeCount),this.edgeVAO.unbind()),this.pointCount>0){var l=this.pointPickShader;l.bind(),l.uniforms=s,this.pointVAO.bind(),e.drawArrays(e.POINTS,0,this.pointCount),this.pointVAO.unbind()}},O.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;for(var e=t.value[0]+256*t.value[1]+65536*t.value[2],r=this.cells[e],n=this.positions,i=new Array(r.length),o=0;o<r.length;++o)i[o]=n[r[o]];var a=S(i,[t.coord[0],this._resolution[1]-t.coord[1]],this._model,this._view,this._projection,this._resolution);if(!a)return null;for(var s=a[2],l=0,o=0;o<r.length;++o)l+=s[o]*this.intensity[r[o]];return{position:a[1],index:r[a[0]],cell:r,cellId:e,intensity:l,dataCoordinate:this.positions[r[a[0]]]}},O.dispose=function(){this.texture.dispose(),this.triShader.dispose(),this.lineShader.dispose(),this.pointShader.dispose(),this.pickShader.dispose(),this.pointPickShader.dispose(),this.triangleVAO.dispose(),this.trianglePositions.dispose(),this.triangleColors.dispose(),this.triangleUVs.dispose(),this.triangleNormals.dispose(),this.triangleIds.dispose(),this.edgeVAO.dispose(),this.edgePositions.dispose(),this.edgeColors.dispose(),this.edgeUVs.dispose(),this.edgeIds.dispose(),this.pointVAO.dispose(),this.pointPositions.dispose(),this.pointColors.dispose(),this.pointUVs.dispose(),this.pointSizes.dispose(),this.pointIds.dispose(),this.contourVAO.dispose(),this.contourPositions.dispose(),this.contourShader.dispose()},e.exports=d},{"./lib/closest-point":164,"./lib/shaders":165,colormap:75,"gl-buffer":121,"gl-mat4/invert":142,"gl-mat4/multiply":144,"gl-shader":190,"gl-texture2d":202,"gl-vao":206,ndarray:385,normals:387,"simplicial-complex-contour":427,"typedarray-pool":449}],167:[function(t,e,r){"use strict";function n(t,e,r){
++this.plot=t,this.vbo=e,this.shader=r}function i(t){var e=t.gl,r=o(e,[0,0,0,1,1,0,1,1]),i=a(e,s.boxVert,s.lineFrag);return new n(t,r,i)}e.exports=i;var o=t("gl-buffer"),a=t("gl-shader"),s=t("./shaders"),l=n.prototype;l.bind=function(){var t=this.shader;this.vbo.bind(),this.shader.bind(),t.attributes.coord.pointer(),t.uniforms.screenBox=this.plot.screenBox},l.drawBox=function(){var t=[0,0],e=[0,0];return function(r,n,i,o,a){var s=this.plot,l=this.shader,u=s.gl;t[0]=r,t[1]=n,e[0]=i,e[1]=o,l.uniforms.lo=t,l.uniforms.hi=e,l.uniforms.color=a,u.drawArrays(u.TRIANGLE_STRIP,0,4)}}(),l.dispose=function(){this.vbo.dispose(),this.shader.dispose()}},{"./shaders":170,"gl-buffer":121,"gl-shader":190}],168:[function(t,e,r){"use strict";function n(t,e,r,n){this.plot=t,this.vbo=e,this.shader=r,this.tickShader=n,this.ticks=[[],[]]}function i(t,e){return t-e}function o(t){var e=t.gl,r=a(e),i=s(e,u.gridVert,u.gridFrag),o=s(e,u.tickVert,u.gridFrag),l=new n(t,r,i,o);return l}e.exports=o;var a=t("gl-buffer"),s=t("gl-shader"),l=t("binary-search-bounds"),u=t("./shaders"),c=n.prototype;c.draw=function(){var t=[0,0],e=[0,0],r=[0,0];return function(){for(var n=this.plot,i=this.vbo,o=this.shader,a=this.ticks,s=n.gl,l=n._tickBounds,u=n.dataBox,c=n.viewBox,h=n.gridLineWidth,f=n.gridLineColor,d=n.gridLineEnable,p=n.pixelRatio,g=0;g<2;++g){var m=l[g],v=l[g+2],y=v-m,b=.5*(u[g+2]+u[g]),x=u[g+2]-u[g];e[g]=2*y/x,t[g]=2*(m-b)/x}o.bind(),i.bind(),o.attributes.dataCoord.pointer(),o.uniforms.dataShift=t,o.uniforms.dataScale=e;for(var _=0,g=0;g<2;++g){r[0]=r[1]=0,r[g]=1,o.uniforms.dataAxis=r,o.uniforms.lineWidth=h[g]/(c[g+2]-c[g])*p,o.uniforms.color=f[g];var w=6*a[g].length;d[g]&&w&&s.drawArrays(s.TRIANGLES,_,w),_+=w}}}(),c.drawTickMarks=function(){var t=[0,0],e=[0,0],r=[1,0],n=[0,1],o=[0,0],a=[0,0];return function(){for(var s=this.plot,u=this.vbo,c=this.tickShader,h=this.ticks,f=s.gl,d=s._tickBounds,p=s.dataBox,g=s.viewBox,m=s.pixelRatio,v=s.screenBox,y=v[2]-v[0],b=v[3]-v[1],x=g[2]-g[0],_=g[3]-g[1],w=0;w<2;++w){var M=d[w],k=d[w+2],A=k-M,T=.5*(p[w+2]+p[w]),E=p[w+2]-p[w];e[w]=2*A/E,t[w]=2*(M-T)/E}e[0]*=x/y,t[0]*=x/y,e[1]*=_/b,t[1]*=_/b,c.bind(),u.bind(),c.attributes.dataCoord.pointer();var S=c.uniforms;S.dataShift=t,S.dataScale=e;var L=s.tickMarkLength,z=s.tickMarkWidth,I=s.tickMarkColor,C=0,P=6*h[0].length,R=Math.min(l.ge(h[0],(p[0]-d[0])/(d[2]-d[0]),i),h[0].length),D=Math.min(l.gt(h[0],(p[2]-d[0])/(d[2]-d[0]),i),h[0].length),O=C+6*R,F=6*Math.max(0,D-R),j=Math.min(l.ge(h[1],(p[1]-d[1])/(d[3]-d[1]),i),h[1].length),N=Math.min(l.gt(h[1],(p[3]-d[1])/(d[3]-d[1]),i),h[1].length),B=P+6*j,U=6*Math.max(0,N-j);o[0]=2*(g[0]-L[1])/y-1,o[1]=(g[3]+g[1])/b-1,a[0]=L[1]*m/y,a[1]=z[1]*m/b,U&&(S.color=I[1],S.tickScale=a,S.dataAxis=n,S.screenOffset=o,f.drawArrays(f.TRIANGLES,B,U)),o[0]=(g[2]+g[0])/y-1,o[1]=2*(g[1]-L[0])/b-1,a[0]=z[0]*m/y,a[1]=L[0]*m/b,F&&(S.color=I[0],S.tickScale=a,S.dataAxis=r,S.screenOffset=o,f.drawArrays(f.TRIANGLES,O,F)),o[0]=2*(g[2]+L[3])/y-1,o[1]=(g[3]+g[1])/b-1,a[0]=L[3]*m/y,a[1]=z[3]*m/b,U&&(S.color=I[3],S.tickScale=a,S.dataAxis=n,S.screenOffset=o,f.drawArrays(f.TRIANGLES,B,U)),o[0]=(g[2]+g[0])/y-1,o[1]=2*(g[3]+L[2])/b-1,a[0]=z[2]*m/y,a[1]=L[2]*m/b,F&&(S.color=I[2],S.tickScale=a,S.dataAxis=r,S.screenOffset=o,f.drawArrays(f.TRIANGLES,O,F))}}(),c.update=function(){var t=[1,1,-1,-1,1,-1],e=[1,-1,1,1,-1,-1];return function(r){for(var n=r.ticks,i=r.bounds,o=new Float32Array(18*(n[0].length+n[1].length)),a=(this.plot.zeroLineEnable,0),s=[[],[]],l=0;l<2;++l)for(var u=s[l],c=n[l],h=i[l],f=i[l+2],d=0;d<c.length;++d){var p=(c[d].x-h)/(f-h);u.push(p);for(var g=0;g<6;++g)o[a++]=p,o[a++]=t[g],o[a++]=e[g]}this.ticks=s,this.vbo.update(o)}}(),c.dispose=function(){this.vbo.dispose(),this.shader.dispose(),this.tickShader.dispose()}},{"./shaders":170,"binary-search-bounds":172,"gl-buffer":121,"gl-shader":190}],169:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.vbo=e,this.shader=r}function i(t){var e=t.gl,r=o(e,[-1,-1,-1,1,1,-1,1,1]),i=a(e,s.lineVert,s.lineFrag),l=new n(t,r,i);return l}e.exports=i;var o=t("gl-buffer"),a=t("gl-shader"),s=t("./shaders"),l=n.prototype;l.bind=function(){var t=this.shader;this.vbo.bind(),this.shader.bind(),t.attributes.coord.pointer(),t.uniforms.screenBox=this.plot.screenBox},l.drawLine=function(){var t=[0,0],e=[0,0];return function(r,n,i,o,a,s){var l=this.plot,u=this.shader,c=l.gl;t[0]=r,t[1]=n,e[0]=i,e[1]=o,u.uniforms.start=t,u.uniforms.end=e,u.uniforms.width=a*l.pixelRatio,u.uniforms.color=s,c.drawArrays(c.TRIANGLE_STRIP,0,4)}}(),l.dispose=function(){this.vbo.dispose(),this.shader.dispose()}},{"./shaders":170,"gl-buffer":121,"gl-shader":190}],170:[function(t,e,r){"use strict";var n="precision lowp float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = vec4(color.xyz * color.w, color.w);\n}\n";e.exports={lineVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 start, end;\nuniform float width;\n\nvec2 perp(vec2 v) {\n  return vec2(v.y, -v.x);\n}\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  vec2 delta = normalize(perp(start - end));\n  vec2 offset = mix(start, end, 0.5 * (coord.y+1.0));\n  gl_Position = vec4(screen(offset + 0.5 * width * delta * coord.x), 0, 1);\n}\n",lineFrag:n,textVert:"#define GLSLIFY 1\nattribute vec3 textCoordinate;\n\nuniform vec2 dataScale, dataShift, dataAxis, screenOffset, textScale;\nuniform float angle;\n\nvoid main() {\n  float dataOffset  = textCoordinate.z;\n  vec2 glyphOffset  = textCoordinate.xy;\n  mat2 glyphMatrix = mat2(cos(angle), sin(angle), -sin(angle), cos(angle));\n  vec2 screenCoordinate = dataAxis * (dataScale * dataOffset + dataShift) +\n    glyphMatrix * glyphOffset * textScale + screenOffset;\n  gl_Position = vec4(screenCoordinate, 0, 1);\n}\n",textFrag:n,gridVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale;\nuniform float lineWidth;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  pos += 10.0 * dataCoord.y * vec2(dataAxis.y, -dataAxis.x) + dataCoord.z * lineWidth;\n  gl_Position = vec4(pos, 0, 1);\n}\n",gridFrag:n,boxVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 lo, hi;\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  gl_Position = vec4(screen(mix(lo, hi, coord)), 0, 1);\n}\n",tickVert:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale, screenOffset, tickScale;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  gl_Position = vec4(pos + tickScale*dataCoord.yz + screenOffset, 0, 1);\n}\n"}},{}],171:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.vbo=e,this.shader=r,this.tickOffset=[[],[]],this.tickX=[[],[]],this.labelOffset=[0,0],this.labelCount=[0,0]}function i(t){var e=t.gl,r=o(e),i=a(e,u.textVert,u.textFrag),s=new n(t,r,i);return s}e.exports=i;var o=t("gl-buffer"),a=t("gl-shader"),s=t("text-cache"),l=t("binary-search-bounds"),u=t("./shaders"),c=n.prototype;c.drawTicks=function(){var t=[0,0],e=[0,0],r=[0,0];return function(n){var i=this.plot,o=this.shader,a=this.tickX[n],s=this.tickOffset[n],u=i.gl,c=i.viewBox,h=i.dataBox,f=i.screenBox,d=i.pixelRatio,p=i.tickEnable,g=i.tickPad,m=i.tickColor,v=i.tickAngle,y=(i.tickMarkLength,i.labelEnable),b=i.labelPad,x=i.labelColor,_=i.labelAngle,w=this.labelOffset[n],M=this.labelCount[n],k=l.lt(a,h[n]),A=l.le(a,h[n+2]);t[0]=t[1]=0,t[n]=1,e[n]=(c[2+n]+c[n])/(f[2+n]-f[n])-1;var T=2/f[2+(1^n)]-f[1^n];e[1^n]=T*c[1^n]-1,p[n]&&(e[1^n]-=T*d*g[n],k<A&&s[A]>s[k]&&(o.uniforms.dataAxis=t,o.uniforms.screenOffset=e,o.uniforms.color=m[n],o.uniforms.angle=v[n],u.drawArrays(u.TRIANGLES,s[k],s[A]-s[k]))),y[n]&&M&&(e[1^n]-=T*d*b[n],o.uniforms.dataAxis=r,o.uniforms.screenOffset=e,o.uniforms.color=x[n],o.uniforms.angle=_[n],u.drawArrays(u.TRIANGLES,w,M)),e[1^n]=T*c[2+(1^n)]-1,p[n+2]&&(e[1^n]+=T*d*g[n+2],k<A&&s[A]>s[k]&&(o.uniforms.dataAxis=t,o.uniforms.screenOffset=e,o.uniforms.color=m[n+2],o.uniforms.angle=v[n+2],u.drawArrays(u.TRIANGLES,s[k],s[A]-s[k]))),y[n+2]&&M&&(e[1^n]+=T*d*b[n+2],o.uniforms.dataAxis=r,o.uniforms.screenOffset=e,o.uniforms.color=x[n+2],o.uniforms.angle=_[n+2],u.drawArrays(u.TRIANGLES,w,M))}}(),c.drawTitle=function(){var t=[0,0],e=[0,0];return function(){var r=this.plot,n=this.shader,i=r.gl,o=r.screenBox,a=r.titleCenter,s=r.titleAngle,l=r.titleColor,a=r.titleCenter,u=r.pixelRatio;if(this.titleCount){for(var c=0;c<2;++c)e[c]=2*(a[c]*u-o[c])/(o[2+c]-o[c])-1;n.bind(),n.uniforms.dataAxis=t,n.uniforms.screenOffset=e,n.uniforms.angle=s,n.uniforms.color=l,i.drawArrays(i.TRIANGLES,this.titleOffset,this.titleCount)}}}(),c.bind=function(){var t=[0,0],e=[0,0],r=[0,0];return function(){var n=this.plot,i=this.shader,o=n._tickBounds,a=n.dataBox,s=n.screenBox,l=n.viewBox;i.bind();for(var u=0;u<2;++u){var c=o[u],h=o[u+2],f=h-c,d=.5*(a[u+2]+a[u]),p=a[u+2]-a[u],g=l[u],m=l[u+2],v=m-g,y=s[u],b=s[u+2],x=b-y;e[u]=2*f/p*v/x,t[u]=2*(c-d)/p*v/x}r[1]=2*n.pixelRatio/(s[3]-s[1]),r[0]=r[1]*(s[3]-s[1])/(s[2]-s[0]),i.uniforms.dataScale=e,i.uniforms.dataShift=t,i.uniforms.textScale=r,this.vbo.bind(),i.attributes.textCoordinate.pointer()}}(),c.update=function(t){for(var e=[],r=t.ticks,n=t.bounds,i=0;i<2;++i){for(var o=[Math.floor(e.length/3)],a=[-(1/0)],l=r[i],u=0;u<l.length;++u){for(var c=l[u],h=c.x,f=c.text,d=c.font||"sans-serif",p=c.fontSize||12,g=s(d,f).data,m=1/(n[i+2]-n[i]),v=n[i],y=0;y<g.length;y+=2)e.push(g[y]*p,-g[y+1]*p,(h-v)*m);o.push(Math.floor(e.length/3)),a.push(h)}this.tickOffset[i]=o,this.tickX[i]=a}for(var i=0;i<2;++i){this.labelOffset[i]=Math.floor(e.length/3);for(var g=s(t.labelFont[i],t.labels[i]).data,p=t.labelSize[i],u=0;u<g.length;u+=2)e.push(g[u]*p,-g[u+1]*p,0);this.labelCount[i]=Math.floor(e.length/3)-this.labelOffset[i]}this.titleOffset=Math.floor(e.length/3);for(var g=s(t.titleFont,t.title).data,p=t.titleSize,u=0;u<g.length;u+=2)e.push(g[u]*p,-g[u+1]*p,0);this.titleCount=Math.floor(e.length/3)-this.titleOffset,this.vbo.update(e)},c.dispose=function(){this.vbo.dispose(),this.shader.dispose()}},{"./shaders":170,"binary-search-bounds":172,"gl-buffer":121,"gl-shader":190,"text-cache":441}],172:[function(t,e,r){arguments[4][67][0].apply(r,arguments)},{dup:67}],173:[function(t,e,r){"use strict";function n(t,e){this.gl=t,this.pickBuffer=e,this.screenBox=[0,0,t.drawingBufferWidth,t.drawingBufferHeight],this.viewBox=[0,0,0,0],this.dataBox=[-10,-10,10,10],this.gridLineEnable=[!0,!0],this.gridLineWidth=[1,1],this.gridLineColor=[[0,0,0,1],[0,0,0,1]],this.pixelRatio=1,this.tickMarkLength=[0,0,0,0],this.tickMarkWidth=[0,0,0,0],this.tickMarkColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.tickPad=[15,15,15,15],this.tickAngle=[0,0,0,0],this.tickEnable=[!0,!0,!0,!0],this.tickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.labelPad=[15,15,15,15],this.labelAngle=[0,Math.PI/2,0,3*Math.PI/2],this.labelEnable=[!0,!0,!0,!0],this.labelColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.titleCenter=[0,0],this.titleEnable=!0,this.titleAngle=0,this.titleColor=[0,0,0,1],this.borderColor=[0,0,0,0],this.backgroundColor=[0,0,0,0],this.zeroLineEnable=[!0,!0],this.zeroLineWidth=[4,4],this.zeroLineColor=[[0,0,0,1],[0,0,0,1]],this.borderLineEnable=[!0,!0,!0,!0],this.borderLineWidth=[2,2,2,2],this.borderLineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.grid=null,this.text=null,this.line=null,this.box=null,this.objects=[],this.overlays=[],this._tickBounds=[1/0,1/0,-(1/0),-(1/0)],this.dirty=!1,this.pickDirty=!1,this.pickDelay=120,this.pickRadius=10,this._pickTimeout=null,this._drawPick=this.drawPick.bind(this),this._depthCounter=0}function i(t){for(var e=t.slice(),r=0;r<e.length;++r)e[r]=e[r].slice();return e}function o(t,e){return t.x-e.x}function a(t){var e=t.gl,r=s(e,[e.drawingBufferWidth,e.drawingBufferHeight]),i=new n(e,r);return i.grid=l(i),i.text=u(i),i.line=c(i),i.box=h(i),i.update(t),i}e.exports=a;var s=t("gl-select-static"),l=t("./lib/grid"),u=t("./lib/text"),c=t("./lib/line"),h=t("./lib/box"),f=n.prototype;f.setDirty=function(){this.dirty=this.pickDirty=!0},f.setOverlayDirty=function(){this.dirty=!0},f.nextDepthValue=function(){return this._depthCounter++/65536},f.draw=function(){return function(){var t=this.gl,e=this.screenBox,r=this.viewBox,n=this.dataBox,i=this.pixelRatio,o=this.grid,a=this.line,s=this.text,l=this.objects;if(this._depthCounter=0,this.pickDirty&&(this._pickTimeout&&clearTimeout(this._pickTimeout),this.pickDirty=!1,this._pickTimeout=setTimeout(this._drawPick,this.pickDelay)),this.dirty){this.dirty=!1,t.bindFramebuffer(t.FRAMEBUFFER,null),t.enable(t.SCISSOR_TEST),t.disable(t.DEPTH_TEST),t.depthFunc(t.LESS),t.depthMask(!1),t.enable(t.BLEND),t.blendEquation(t.FUNC_ADD,t.FUNC_ADD),t.blendFunc(t.ONE,t.ONE_MINUS_SRC_ALPHA),t.scissor(e[0],e[1],e[2]-e[0],e[3]-e[1]);var u=this.borderColor;t.clearColor(u[0]*u[3],u[1]*u[3],u[2]*u[3],u[3]),t.clear(t.COLOR_BUFFER_BIT|t.DEPTH_BUFFER_BIT),t.scissor(r[0],r[1],r[2]-r[0],r[3]-r[1]),t.viewport(r[0],r[1],r[2]-r[0],r[3]-r[1]);var c=this.backgroundColor;t.clearColor(c[0]*c[3],c[1]*c[3],c[2]*c[3],c[3]),t.clear(t.COLOR_BUFFER_BIT),o.draw();var h=this.zeroLineEnable,f=this.zeroLineColor,d=this.zeroLineWidth;if(h[0]||h[1]){a.bind();for(var p=0;p<2;++p)if(h[p]&&n[p]<=0&&n[p+2]>=0){var g=e[p]-n[p]*(e[p+2]-e[p])/(n[p+2]-n[p]);0===p?a.drawLine(g,e[1],g,e[3],d[p],f[p]):a.drawLine(e[0],g,e[2],g,d[p],f[p])}}for(var p=0;p<l.length;++p)l[p].draw();t.viewport(e[0],e[1],e[2]-e[0],e[3]-e[1]),t.scissor(e[0],e[1],e[2]-e[0],e[3]-e[1]),this.grid.drawTickMarks(),a.bind();var m=this.borderLineEnable,v=this.borderLineWidth,y=this.borderLineColor;m[1]&&a.drawLine(r[0],r[1]-.5*v[1]*i,r[0],r[3]+.5*v[3]*i,v[1],y[1]),m[0]&&a.drawLine(r[0]-.5*v[0]*i,r[1],r[2]+.5*v[2]*i,r[1],v[0],y[0]),m[3]&&a.drawLine(r[2],r[1]-.5*v[1]*i,r[2],r[3]+.5*v[3]*i,v[3],y[3]),m[2]&&a.drawLine(r[0]-.5*v[0]*i,r[3],r[2]+.5*v[2]*i,r[3],v[2],y[2]),s.bind();for(var p=0;p<2;++p)s.drawTicks(p);this.titleEnable&&s.drawTitle();for(var b=this.overlays,p=0;p<b.length;++p)b[p].draw();t.disable(t.SCISSOR_TEST),t.disable(t.BLEND),t.depthMask(!0)}}}(),f.drawPick=function(){return function(){var t=this.pickBuffer;this.gl;this._pickTimeout=null,t.begin();for(var e=1,r=this.objects,n=0;n<r.length;++n)e=r[n].drawPick(e);t.end()}}(),f.pick=function(){return function(t,e){var r=this.pixelRatio,n=this.pickPixelRatio,i=this.viewBox,o=0|Math.round((t-i[0]/r)*n),a=0|Math.round((e-i[1]/r)*n),s=this.pickBuffer.query(o,a,this.pickRadius);if(!s)return null;for(var l=s.id+(s.value[0]<<8)+(s.value[1]<<16)+(s.value[2]<<24),u=this.objects,c=0;c<u.length;++c){var h=u[c].pick(o,a,l);if(h)return h}return null}}(),f.setScreenBox=function(t){var e=this.screenBox,r=this.pixelRatio;e[0]=0|Math.round(t[0]*r),e[1]=0|Math.round(t[1]*r),e[2]=0|Math.round(t[2]*r),e[3]=0|Math.round(t[3]*r),this.setDirty()},f.setDataBox=function(t){var e=this.dataBox,r=e[0]!==t[0]||e[1]!==t[1]||e[2]!==t[2]||e[3]!==t[3];r&&(e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],this.setDirty())},f.setViewBox=function(t){var e=this.pixelRatio,r=this.viewBox;r[0]=0|Math.round(t[0]*e),r[1]=0|Math.round(t[1]*e),r[2]=0|Math.round(t[2]*e),r[3]=0|Math.round(t[3]*e);var n=this.pickPixelRatio;this.pickBuffer.shape=[0|Math.round((t[2]-t[0])*n),0|Math.round((t[3]-t[1])*n)],this.setDirty()},f.update=function(t){t=t||{};var e=this.gl;this.pixelRatio=t.pixelRatio||1;var r=this.pixelRatio;this.pickPixelRatio=Math.max(r,1),this.setScreenBox(t.screenBox||[0,0,e.drawingBufferWidth/r,e.drawingBufferHeight/r]);this.screenBox;this.setViewBox(t.viewBox||[.125*(this.screenBox[2]-this.screenBox[0])/r,.125*(this.screenBox[3]-this.screenBox[1])/r,.875*(this.screenBox[2]-this.screenBox[0])/r,.875*(this.screenBox[3]-this.screenBox[1])/r]);var n=this.viewBox,a=(n[2]-n[0])/(n[3]-n[1]);this.setDataBox(t.dataBox||[-10,-10/a,10,10/a]),this.borderColor=(t.borderColor||[0,0,0,0]).slice(),this.backgroundColor=(t.backgroundColor||[0,0,0,0]).slice(),this.gridLineEnable=(t.gridLineEnable||[!0,!0]).slice(),this.gridLineWidth=(t.gridLineWidth||[1,1]).slice(),this.gridLineColor=i(t.gridLineColor||[[.5,.5,.5,1],[.5,.5,.5,1]]),this.zeroLineEnable=(t.zeroLineEnable||[!0,!0]).slice(),this.zeroLineWidth=(t.zeroLineWidth||[4,4]).slice(),this.zeroLineColor=i(t.zeroLineColor||[[0,0,0,1],[0,0,0,1]]),this.tickMarkLength=(t.tickMarkLength||[0,0,0,0]).slice(),this.tickMarkWidth=(t.tickMarkWidth||[0,0,0,0]).slice(),this.tickMarkColor=i(t.tickMarkColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]),this.titleCenter=(t.titleCenter||[.5*(n[0]+n[2])/r,(n[3]+120)/r]).slice(),this.titleEnable=!("titleEnable"in t&&!t.titleEnable),this.titleAngle=t.titleAngle||0,this.titleColor=(t.titleColor||[0,0,0,1]).slice(),this.labelPad=(t.labelPad||[15,15,15,15]).slice(),this.labelAngle=(t.labelAngle||[0,Math.PI/2,0,3*Math.PI/2]).slice(),this.labelEnable=(t.labelEnable||[!0,!0,!0,!0]).slice(),this.labelColor=i(t.labelColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]),this.tickPad=(t.tickPad||[15,15,15,15]).slice(),this.tickAngle=(t.tickAngle||[0,0,0,0]).slice(),this.tickEnable=(t.tickEnable||[!0,!0,!0,!0]).slice(),this.tickColor=i(t.tickColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]),this.borderLineEnable=(t.borderLineEnable||[!0,!0,!0,!0]).slice(),this.borderLineWidth=(t.borderLineWidth||[2,2,2,2]).slice(),this.borderLineColor=i(t.borderLineColor||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]);var s=t.ticks||[[],[]],l=this._tickBounds;l[0]=l[1]=1/0,l[2]=l[3]=-(1/0);for(var u=0;u<2;++u){var c=s[u].slice(0);0!==c.length&&(c.sort(o),l[u]=Math.min(l[u],c[0].x),l[u+2]=Math.max(l[u+2],c[c.length-1].x))}this.grid.update({bounds:l,ticks:s}),this.text.update({bounds:l,ticks:s,labels:t.labels||["x","y"],labelSize:t.labelSize||[12,12],labelFont:t.labelFont||["sans-serif","sans-serif"],title:t.title||"",titleSize:t.titleSize||18,titleFont:t.titleFont||"sans-serif"}),this.setDirty()},f.dispose=function(){this.box.dispose(),this.grid.dispose(),this.text.dispose(),this.line.dispose();for(var t=this.objects.length-1;t>=0;--t)this.objects[t].dispose();this.objects.length=0;for(var t=this.overlays.length-1;t>=0;--t)this.overlays[t].dispose();this.overlays.length=0,this.gl=null},f.addObject=function(t){this.objects.indexOf(t)<0&&(this.objects.push(t),this.setDirty())},f.removeObject=function(t){for(var e=this.objects,r=0;r<e.length;++r)if(e[r]===t){e.splice(r,1),this.setDirty();break}},f.addOverlay=function(t){this.overlays.indexOf(t)<0&&(this.overlays.push(t),this.setOverlayDirty())},f.removeOverlay=function(t){for(var e=this.overlays,r=0;r<e.length;++r)if(e[r]===t){e.splice(r,1),this.setOverlayDirty();break}}},{"./lib/box":167,"./lib/grid":168,"./lib/line":169,"./lib/text":171,"gl-select-static":189}],174:[function(t,e,r){var n=t("gl-shader"),i="precision mediump float;\n#define GLSLIFY 1\nattribute vec2 position;\nvarying vec2 uv;\nvoid main() {\n  uv = position;\n  gl_Position = vec4(position, 0, 1);\n}",o="precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D accumBuffer;\nvarying vec2 uv;\n\nvoid main() {\n  vec4 accum = texture2D(accumBuffer, 0.5 * (uv + 1.0));\n  gl_FragColor = min(vec4(1,1,1,1), accum);\n}";e.exports=function(t){return n(t,i,o,null,[{name:"position",type:"vec2"}])}},{"gl-shader":190}],175:[function(t,e,r){"use strict";function n(){this.mouse=[-1,-1],this.screen=null,this.distance=1/0,this.index=null,this.dataCoordinate=null,this.dataPosition=null,this.object=null,this.data=null}function i(t,e){var r=null;try{r=t.getContext("webgl",e),r||(r=t.getContext("experimental-webgl",e))}catch(t){return null}return r}function o(t){var e=Math.round(Math.log(Math.abs(t))/Math.log(10));if(e<0){var r=Math.round(Math.pow(10,-e));return Math.ceil(t*r)/r}if(e>0){var r=Math.round(Math.pow(10,e));return Math.ceil(t/r)*r}return Math.ceil(t)}function a(t){return"boolean"!=typeof t||t}function s(t){function e(){if(!_&&G.autoResize){var t=w.parentNode,e=1,r=1;t&&t!==document.body?(e=t.clientWidth,r=t.clientHeight):(e=window.innerWidth,r=window.innerHeight);var n=0|Math.ceil(e*G.pixelRatio),i=0|Math.ceil(r*G.pixelRatio);if(n!==w.width||i!==w.height){w.width=n,w.height=i;var o=w.style;o.position=o.position||"absolute",o.left="0px",o.top="0px",o.width=e+"px",o.height=r+"px",j=!0}}}function r(){for(var t=R.length,e=F.length,r=0;r<e;++r)O[r]=0;t:for(var r=0;r<t;++r){var n=R[r],i=n.pickSlots;if(i){for(var o=0;o<e;++o)if(O[o]+i<255){D[r]=o,n.setPickBase(O[o]+1),O[o]+=i;continue t}var a=f(k,q);D[r]=e,F.push(a),O.push(i),n.setPickBase(1),e+=1}else D[r]=-1}for(;e>0&&0===O[e-1];)O.pop(),F.pop().dispose()}function s(){return!!G.contextLost||void(k.isContextLost()&&(G.contextLost=!0,G.mouseListener.enabled=!1,G.selection.object=null,G.oncontextloss&&G.oncontextloss()))}function y(){if(!s()){k.colorMask(!0,!0,!0,!0),k.depthMask(!0),k.disable(k.BLEND),k.enable(k.DEPTH_TEST);for(var t=R.length,e=F.length,r=0;r<e;++r){var n=F[r];n.shape=H,n.begin();for(var i=0;i<t;++i)if(D[i]===r){var o=R[i];o.drawPick&&(o.pixelRatio=1,o.drawPick(V))}n.end()}}}function b(){if(!s()){e();var t=G.camera.tick();V.view=G.camera.matrix,j=j||t,N=N||t,I.pixelRatio=G.pixelRatio,P.pixelRatio=G.pixelRatio;var r=R.length,n=W[0],i=W[1];n[0]=n[1]=n[2]=1/0,i[0]=i[1]=i[2]=-(1/0);for(var a=0;a<r;++a){var l=R[a];l.pixelRatio=G.pixelRatio,l.axes=G.axes,j=j||!!l.dirty,N=N||!!l.dirty;var u=l.bounds;if(u)for(var h=u[0],f=u[1],d=0;d<3;++d)n[d]=Math.min(n[d],h[d]),i[d]=Math.max(i[d],f[d])}var g=G.bounds;if(G.autoBounds)for(var d=0;d<3;++d){if(i[d]<n[d])n[d]=-1,i[d]=1;else{n[d]===i[d]&&(n[d]-=1,i[d]+=1);var v=.05*(i[d]-n[d]);n[d]=n[d]-v,i[d]=i[d]+v}g[0][d]=n[d],g[1][d]=i[d]}for(var b=!1,d=0;d<3;++d)b=b||Z[0][d]!==g[0][d]||Z[1][d]!==g[1][d],Z[0][d]=g[0][d],Z[1][d]=g[1][d];if(b){for(var x=[0,0,0],a=0;a<3;++a)x[a]=o((g[1][a]-g[0][a])/10);I.autoTicks?I.update({bounds:g,tickSpacing:x}):I.update({bounds:g})}N=N||b,j=j||b;var _=k.drawingBufferWidth,w=k.drawingBufferHeight;q[0]=_,q[1]=w,H[0]=0|Math.max(_/G.pixelRatio,1),H[1]=0|Math.max(w/G.pixelRatio,1),m(B,G.fovy,_/w,G.zNear,G.zFar);for(var a=0;a<16;++a)U[a]=0;U[15]=1;for(var M=0,a=0;a<3;++a)M=Math.max(M,g[1][a]-g[0][a]);for(var a=0;a<3;++a)G.autoScale?U[5*a]=G.aspect[a]/(g[1][a]-g[0][a]):U[5*a]=1/M,G.autoCenter&&(U[12+a]=.5*-U[5*a]*(g[0][a]+g[1][a]));for(var a=0;a<r;++a){var l=R[a];l.axesBounds=g,G.clipToBounds&&(l.clipBounds=g)}if(T.object&&(G.snapToData?P.position=T.dataCoordinate:P.position=T.dataPosition,P.bounds=g),N&&(N=!1,y()),j){G.axesPixels=c(G.axes,V,_,w),G.onrender&&G.onrender(),k.bindFramebuffer(k.FRAMEBUFFER,null),k.viewport(0,0,_,w);var A=G.clearColor;k.clearColor(A[0],A[1],A[2],A[3]),k.clear(k.COLOR_BUFFER_BIT|k.DEPTH_BUFFER_BIT),k.depthMask(!0),k.colorMask(!0,!0,!0,!0),k.enable(k.DEPTH_TEST),k.depthFunc(k.LEQUAL),k.disable(k.BLEND),k.disable(k.CULL_FACE);var L=!1;I.enable&&(L=L||I.isTransparent(),I.draw(V)),P.axes=I,T.object&&P.draw(V),k.disable(k.CULL_FACE);for(var a=0;a<r;++a){var l=R[a];l.axes=I,l.pixelRatio=G.pixelRatio,l.isOpaque&&l.isOpaque()&&l.draw(V),l.isTransparent&&l.isTransparent()&&(L=!0)}if(L){E.shape=q,E.bind(),k.clear(k.DEPTH_BUFFER_BIT),k.colorMask(!1,!1,!1,!1),k.depthMask(!0),k.depthFunc(k.LESS),I.enable&&I.isTransparent()&&I.drawTransparent(V);for(var a=0;a<r;++a){var l=R[a];l.isOpaque&&l.isOpaque()&&l.draw(V)}k.enable(k.BLEND),k.blendEquation(k.FUNC_ADD),k.blendFunc(k.ONE,k.ONE_MINUS_SRC_ALPHA),k.colorMask(!0,!0,!0,!0),k.depthMask(!1),k.clearColor(0,0,0,0),k.clear(k.COLOR_BUFFER_BIT),I.isTransparent()&&I.drawTransparent(V);for(var a=0;a<r;++a){var l=R[a];l.isTransparent&&l.isTransparent()&&l.drawTransparent(V)}k.bindFramebuffer(k.FRAMEBUFFER,null),k.blendFunc(k.ONE,k.ONE_MINUS_SRC_ALPHA),k.disable(k.DEPTH_TEST),S.bind(),E.color[0].bind(0),S.uniforms.accumBuffer=0,p(k),k.disable(k.BLEND)}j=!1;for(var a=0;a<r;++a)R[a].dirty=!1}}}function x(){_||G.contextLost||(requestAnimationFrame(x),b())}t=t||{};var _=!1,w=(t.pixelRatio||parseFloat(window.devicePixelRatio),t.canvas);if(!w)if(w=document.createElement("canvas"),t.container){var M=t.container;M.appendChild(w)}else document.body.appendChild(w);var k=t.gl;if(k||(k=i(w,t.glOptions||{premultipliedAlpha:!0,antialias:!0})),!k)throw new Error("webgl not supported");var A=t.bounds||[[-10,-10,-10],[10,10,10]],T=new n,E=d(k,[k.drawingBufferWidth,k.drawingBufferHeight],{preferFloat:!0}),S=v(k),L=t.camera||{eye:[2,0,0],center:[0,0,0],up:[0,1,0],zoomMin:.1,zoomMax:100,mode:"turntable"},z=t.axes||{},I=u(k,z);I.enable=!z.disable;var C=t.spikes||{},P=h(k,C),R=[],D=[],O=[],F=[],j=!0,N=!0,B=new Array(16),U=new Array(16),V={view:null,projection:B,model:U},N=!0,q=[k.drawingBufferWidth,k.drawingBufferHeight],G={gl:k,contextLost:!1,pixelRatio:t.pixelRatio||parseFloat(window.devicePixelRatio),canvas:w,selection:T,camera:l(w,L),axes:I,axesPixels:null,spikes:P,bounds:A,objects:R,shape:q,aspect:t.aspectRatio||[1,1,1],pickRadius:t.pickRadius||10,zNear:t.zNear||.01,zFar:t.zFar||1e3,fovy:t.fovy||Math.PI/4,clearColor:t.clearColor||[0,0,0,0],autoResize:a(t.autoResize),autoBounds:a(t.autoBounds),autoScale:!!t.autoScale,autoCenter:a(t.autoCenter),clipToBounds:a(t.clipToBounds),snapToData:!!t.snapToData,onselect:t.onselect||null,onrender:t.onrender||null,onclick:t.onclick||null,cameraParams:V,oncontextloss:null,mouseListener:null},H=[k.drawingBufferWidth/G.pixelRatio|0,k.drawingBufferHeight/G.pixelRatio|0];G.autoResize&&e(),window.addEventListener("resize",e),G.update=function(t){_||(t=t||{},j=!0,N=!0)},G.add=function(t){_||(t.axes=I,R.push(t),D.push(-1),j=!0,N=!0,r())},G.remove=function(t){if(!_){var e=R.indexOf(t);e<0||(R.splice(e,1),D.pop(),j=!0,N=!0,r())}},G.dispose=function(){if(!_&&(_=!0,window.removeEventListener("resize",e),w.removeEventListener("webglcontextlost",s),G.mouseListener.enabled=!1,!G.contextLost)){I.dispose(),P.dispose();for(var t=0;t<R.length;++t)R[t].dispose();E.dispose();for(var t=0;t<F.length;++t)F[t].dispose();S.dispose(),k=null,I=null,P=null,R=[]}};var X=!1,Y=0;G.mouseListener=g(w,function(t,e,r){if(!_){var n=F.length,i=R.length,o=T.object;T.distance=1/0,T.mouse[0]=e,T.mouse[1]=r,T.object=null,T.screen=null,T.dataCoordinate=T.dataPosition=null;var a=!1;if(t&&Y)X=!0;else{X&&(N=!0),X=!1;for(var s=0;s<n;++s){var l=F[s].query(e,H[1]-r-1,G.pickRadius);if(l){if(l.distance>T.distance)continue;for(var u=0;u<i;++u){var c=R[u];if(D[u]===s){var h=c.pick(l);h&&(T.buttons=t,T.screen=l.coord,T.distance=l.distance,T.object=c,T.index=h.distance,T.dataPosition=h.position,T.dataCoordinate=h.dataCoordinate,T.data=h,a=!0)}}}}}o&&o!==T.object&&(o.highlight&&o.highlight(null),j=!0),T.object&&(T.object.highlight&&T.object.highlight(T.data),j=!0),a=a||T.object!==o,a&&G.onselect&&G.onselect(T),1&t&&!(1&Y)&&G.onclick&&G.onclick(T),Y=t}}),w.addEventListener("webglcontextlost",s);var W=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],Z=[W[0].slice(),W[1].slice()];return x(),G.redraw=function(){_||(j=!0,b())},G}e.exports=s;var l=t("3d-view-controls"),u=t("gl-axes3d"),c=t("gl-axes3d/properties"),h=t("gl-spikes3d"),f=t("gl-select-static"),d=t("gl-fbo"),p=t("a-big-triangle"),g=t("mouse-change"),m=t("gl-mat4/perspective"),v=t("./lib/shader")},{"./lib/shader":174,"3d-view-controls":21,"a-big-triangle":23,"gl-axes3d":113,"gl-axes3d/properties":120,"gl-fbo":128,"gl-mat4/perspective":145,"gl-select-static":189,"gl-spikes3d":199,"mouse-change":371}],176:[function(t,e,r){function n(t,e,r,n){var i,o,a,s,l,u=e[0],c=e[1],h=e[2],f=e[3],d=r[0],p=r[1],g=r[2],m=r[3];return o=u*d+c*p+h*g+f*m,o<0&&(o=-o,d=-d,p=-p,g=-g,m=-m),1-o>1e-6?(i=Math.acos(o),a=Math.sin(i),s=Math.sin((1-n)*i)/a,l=Math.sin(n*i)/a):(s=1-n,l=n),t[0]=s*u+l*d,t[1]=s*c+l*p,t[2]=s*h+l*g,t[3]=s*f+l*m,t}e.exports=n},{}],177:[function(t,e,r){"use strict";e.exports={vertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  fragColor = color;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",fragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",pickVertex:"precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 offset;\nattribute vec4 id;\n\nuniform mat3 viewTransform;\nuniform vec2 pixelScale;\nuniform vec4 pickOffset;\n\nvarying vec4 fragColor;\n\nvec4 computePosition_1_0(vec2 position, vec2 offset, mat3 view, vec2 scale) {\n  vec3 xposition = view * vec3(position, 1.0);\n  return vec4(\n    xposition.xy + scale * offset * xposition.z,\n    0,\n    xposition.z);\n}\n\n\n\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_Position = computePosition_1_0(\n    position,\n    offset,\n    viewTransform,\n    pixelScale);\n}\n",pickFragment:"precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"}},{}],178:[function(t,e,r){"use strict";function n(t){if(t in f)return f[t];var e=c(t,{polygons:!0,font:"sans-serif",textAlign:"left",textBaseline:"alphabetic"}),r=[],n=[];e.forEach(function(t){t.forEach(function(t){for(var e=0;e<t.length;++e){var i=t[(e+t.length-1)%t.length],o=t[e],a=t[(e+1)%t.length],s=t[(e+2)%t.length],l=o[0]-i[0],u=o[1]-i[1],c=Math.sqrt(l*l+u*u);l/=c,u/=c,r.push(i[0],i[1]+1.4),n.push(u,-l),r.push(i[0],i[1]+1.4),n.push(-u,l),r.push(o[0],o[1]+1.4),n.push(-u,l),r.push(o[0],o[1]+1.4),n.push(-u,l),r.push(i[0],i[1]+1.4),n.push(u,-l),r.push(o[0],o[1]+1.4),n.push(u,-l);var h=s[0]-a[0],f=s[1]-a[1],d=Math.sqrt(h*h+f*f);h/=d,f/=d,r.push(o[0],o[1]+1.4),n.push(u,-l),r.push(o[0],o[1]+1.4),n.push(-u,l),r.push(a[0],a[1]+1.4),n.push(-f,h),r.push(a[0],a[1]+1.4),n.push(-f,h),r.push(o[0],o[1]+1.4),n.push(f,-h),r.push(a[0],a[1]+1.4),n.push(f,-h)}})});for(var i=[1/0,1/0,-(1/0),-(1/0)],o=0;o<r.length;o+=2)for(var a=0;a<2;++a)i[a]=Math.min(i[a],r[o+a]),i[2+a]=Math.max(i[2+a],r[o+a]);return f[t]={coords:r,normals:n,bounds:i}}function i(t,e,r,n,i,o,a){this.plot=t,this.shader=e,this.pickShader=r,this.positionBuffer=n,this.offsetBuffer=i,this.colorBuffer=o,this.idBuffer=a,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.numPoints=0,this.numVertices=0,this.pickOffset=0,this.points=null}function o(t,e){var r=t.gl,n=a(r,h.vertex,h.fragment),o=a(r,h.pickVertex,h.pickFragment),l=s(r),u=s(r),c=s(r),f=s(r),d=new i(t,n,o,l,u,c,f);return d.update(e),t.addObject(d),d}e.exports=o;var a=t("gl-shader"),s=t("gl-buffer"),l=t("text-cache"),u=t("typedarray-pool"),c=t("vectorize-text"),h=t("./lib/shaders"),f={},d=i.prototype;!function(){function t(){var t=this.plot,n=this.bounds,i=t.viewBox,o=t.dataBox,a=t.pixelRatio,s=n[2]-n[0],l=n[3]-n[1],u=o[2]-o[0],c=o[3]-o[1];e[0]=2*s/u,e[4]=2*l/c,e[6]=2*(n[0]-o[0])/u-1,e[7]=2*(n[1]-o[1])/c-1;var h=i[2]-i[0],f=i[3]-i[1];r[0]=2*a/h,r[1]=2*a/f}var e=[1,0,0,0,1,0,0,0,1],r=[1,1];d.draw=function(){var n=this.plot,i=this.shader,o=this.numVertices;if(o){var a=n.gl;t.call(this),i.bind(),i.uniforms.pixelScale=r,i.uniforms.viewTransform=e,this.positionBuffer.bind(),i.attributes.position.pointer(),this.offsetBuffer.bind(),i.attributes.offset.pointer(),this.colorBuffer.bind(),i.attributes.color.pointer(a.UNSIGNED_BYTE,!0),a.drawArrays(a.TRIANGLES,0,o)}};var n=[0,0,0,0];d.drawPick=function(i){var o=this.plot,a=this.pickShader,s=this.numVertices,l=o.gl;if(this.pickOffset=i,
++!s)return i;for(var u=0;u<4;++u)n[u]=i>>8*u&255;return t.call(this),a.bind(),a.uniforms.pixelScale=r,a.uniforms.viewTransform=e,a.uniforms.pickOffset=n,this.positionBuffer.bind(),a.attributes.position.pointer(),this.offsetBuffer.bind(),a.attributes.offset.pointer(),this.idBuffer.bind(),a.attributes.id.pointer(l.UNSIGNED_BYTE,!1),l.drawArrays(l.TRIANGLES,0,s),i+this.numPoints}}(),d.pick=function(t,e,r){var n=this.pickOffset,i=this.numPoints;if(r<n||r>=n+i)return null;var o=r-n,a=this.points;return{object:this,pointId:o,dataCoord:[a[2*o],a[2*o+1]]}},d.update=function(t){t=t||{};var e=t.positions||[],r=t.colors||[],i=t.glyphs||[],o=t.sizes||[],a=t.borderWidths||[],s=t.borderColors||[];this.points=e;for(var c=this.bounds=[1/0,1/0,-(1/0),-(1/0)],h=0,f=0;f<i.length;++f){h+=l("sans-serif",i[f]).data.length+n(i[f]).coords.length>>1;for(var d=0;d<2;++d)c[d]=Math.min(c[d],e[2*f+d]),c[2+d]=Math.max(c[2+d],e[2*f+d])}c[0]===c[2]&&(c[2]+=1),c[3]===c[1]&&(c[3]+=1);for(var p=1/(c[2]-c[0]),g=1/(c[3]-c[1]),m=c[0],v=c[1],y=u.mallocFloat32(2*h),b=u.mallocFloat32(2*h),x=u.mallocUint8(4*h),_=u.mallocUint32(h),w=0,f=0;f<i.length;++f){for(var M=l("sans-serif",i[f]),k=n(i[f]),A=p*(e[2*f]-m),T=g*(e[2*f+1]-v),E=o[f],S=255*r[4*f],L=255*r[4*f+1],z=255*r[4*f+2],I=255*r[4*f+3],C=.5*(k.bounds[0]+k.bounds[2]),P=.5*(k.bounds[1]+k.bounds[3]),d=0;d<M.data.length;d+=2)y[2*w]=A,y[2*w+1]=T,b[2*w]=-E*(M.data[d]-C),b[2*w+1]=-E*(M.data[d+1]-P),x[4*w]=S,x[4*w+1]=L,x[4*w+2]=z,x[4*w+3]=I,_[w]=f,w+=1;var R=a[f];S=255*s[4*f],L=255*s[4*f+1],z=255*s[4*f+2],I=255*s[4*f+3];for(var d=0;d<k.coords.length;d+=2)y[2*w]=A,y[2*w+1]=T,b[2*w]=-(E*(k.coords[d]-C)+R*k.normals[d]),b[2*w+1]=-(E*(k.coords[d+1]-P)+R*k.normals[d+1]),x[4*w]=S,x[4*w+1]=L,x[4*w+2]=z,x[4*w+3]=I,_[w]=f,w+=1}this.numPoints=i.length,this.numVertices=h,this.positionBuffer.update(y),this.offsetBuffer.update(b),this.colorBuffer.update(x),this.idBuffer.update(_),u.free(y),u.free(b),u.free(x),u.free(_)},d.dispose=function(){this.shader.dispose(),this.pickShader.dispose(),this.positionBuffer.dispose(),this.offsetBuffer.dispose(),this.colorBuffer.dispose(),this.idBuffer.dispose(),this.plot.removeObject(this)}},{"./lib/shaders":177,"gl-buffer":121,"gl-shader":190,"text-cache":441,"typedarray-pool":449,"vectorize-text":460}],179:[function(t,e,r){r.pointVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute float weight;\n\nuniform mat3 matrix;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}\n",r.pointFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}\n",r.pickVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n",r.pickFragment="precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"},{}],180:[function(t,e,r){arguments[4][67][0].apply(r,arguments)},{dup:67}],181:[function(t,e,r){"use strict";function n(t,e,r,n,o){o<=4*f?i(0,o-1,t,e,r,n):h(0,o-1,t,e,r,n)}function i(t,e,r,n,i,o){for(var a=t+1;a<=e;++a){for(var s=r[a],l=n[2*a],u=n[2*a+1],c=i[a],h=o[a],f=a;f>t;){var d=r[f-1],p=n[2*(f-1)];if((d-s||l-p)>=0)break;r[f]=d,n[2*f]=p,n[2*f+1]=n[2*f-1],i[f]=i[f-1],o[f]=o[f-1],f-=1}r[f]=s,n[2*f]=l,n[2*f+1]=u,i[f]=c,o[f]=h}}function o(t,e,r,n,i,o){var a=r[t],s=n[2*t],l=n[2*t+1],u=i[t],c=o[t];r[t]=r[e],n[2*t]=n[2*e],n[2*t+1]=n[2*e+1],i[t]=i[e],o[t]=o[e],r[e]=a,n[2*e]=s,n[2*e+1]=l,i[e]=u,o[e]=c}function a(t,e,r,n,i,o){r[t]=r[e],n[2*t]=n[2*e],n[2*t+1]=n[2*e+1],i[t]=i[e],o[t]=o[e]}function s(t,e,r,n,i,o,a){var s=n[t],l=i[2*t],u=i[2*t+1],c=o[t],h=a[t];n[t]=n[e],i[2*t]=i[2*e],i[2*t+1]=i[2*e+1],o[t]=o[e],a[t]=a[e],n[e]=n[r],i[2*e]=i[2*r],i[2*e+1]=i[2*r+1],o[e]=o[r],a[e]=a[r],n[r]=s,i[2*r]=l,i[2*r+1]=u,o[r]=c,a[r]=h}function l(t,e,r,n,i,o,a,s,l,u,c){s[t]=s[e],l[2*t]=l[2*e],l[2*t+1]=l[2*e+1],u[t]=u[e],c[t]=c[e],s[e]=r,l[2*e]=n,l[2*e+1]=i,u[e]=o,c[e]=a}function u(t,e,r,n,i){return(r[t]-r[e]||n[2*e]-n[2*t]||i[t]-i[e])<0}function c(t,e,r,n,i,o,a,s){return(e-o[t]||a[2*t]-r||i-s[t])<0}function h(t,e,r,n,d,p){var g=(e-t+1)/6|0,m=t+g,v=e-g,y=t+e>>1,b=y-g,x=y+g,_=m,w=b,M=y,k=x,A=v,T=t+1,E=e-1,S=0;u(_,w,r,n,d,p)&&(S=_,_=w,w=S),u(k,A,r,n,d,p)&&(S=k,k=A,A=S),u(_,M,r,n,d,p)&&(S=_,_=M,M=S),u(w,M,r,n,d,p)&&(S=w,w=M,M=S),u(_,k,r,n,d,p)&&(S=_,_=k,k=S),u(M,k,r,n,d,p)&&(S=M,M=k,k=S),u(w,A,r,n,d,p)&&(S=w,w=A,A=S),u(w,M,r,n,d,p)&&(S=w,w=M,M=S),u(k,A,r,n,d,p)&&(S=k,k=A,A=S);var L=r[w],z=n[2*w],I=n[2*w+1],C=d[w],P=p[w],R=r[k],D=n[2*k],O=n[2*k+1],F=d[k],j=p[k],N=_,B=M,U=A,V=m,q=y,G=v,H=r[N],X=r[B],Y=r[U];r[V]=H,r[q]=X,r[G]=Y;for(var W=0;W<2;++W){var Z=n[2*N+W],K=n[2*B+W],J=n[2*U+W];n[2*V+W]=Z,n[2*q+W]=K,n[2*G+W]=J}var $=d[N],Q=d[B],tt=d[U];d[V]=$,d[q]=Q,d[G]=tt;var et=p[N],rt=p[B],nt=p[U];p[V]=et,p[q]=rt,p[G]=nt,a(b,t,r,n,d,p),a(x,e,r,n,d,p);for(var it=T;it<=E;++it)if(c(it,L,z,I,C,r,n,d))it!==T&&o(it,T,r,n,d,p),++T;else if(!c(it,R,D,O,F,r,n,d))for(;;){if(c(E,R,D,O,F,r,n,d)){c(E,L,z,I,C,r,n,d)?(s(it,T,E,r,n,d,p),++T,--E):(o(it,E,r,n,d,p),--E);break}if(--E<it)break}l(t,T-1,L,z,I,C,P,r,n,d,p),l(e,E+1,R,D,O,F,j,r,n,d,p),T-2-t<=f?i(t,T-2,r,n,d,p):h(t,T-2,r,n,d,p),e-(E+2)<=f?i(E+2,e,r,n,d,p):h(E+2,e,r,n,d,p),E-T<=f?i(T,E,r,n,d,p):h(T,E,r,n,d,p)}e.exports=n;var f=32},{}],182:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s){for(var l=r,u=r;u<n;++u){var c=t[2*u],h=t[2*u+1],f=e[u];i<=c&&c<=a&&o<=h&&h<=s&&(u===l?l+=1:(t[2*u]=t[2*l],t[2*u+1]=t[2*l+1],e[u]=e[l],t[2*l]=c,t[2*l+1]=h,e[l]=f,l+=1))}return l}function i(t,e,r){this.pixelSize=t,this.offset=e,this.count=r}function o(t,e,r,o){function l(i,o,a,s,u,c){var h=.5*a,f=s+1,d=u-s;r[_]=d,x[_++]=c;for(var p=0;p<2;++p)for(var g=0;g<2;++g){var m=i+p*h,v=o+g*h,y=n(t,e,f,u,m,v,m+h,v+h);if(y!==f){if(y-f>=Math.max(.9*d,32)){var b=u+s>>>1;l(m,v,h,f,b,c+1),f=b}l(m,v,h,f,y,c+1),f=y}}}var u=t.length>>>1;if(u<1)return[];for(var c=1/0,h=1/0,f=-(1/0),d=-(1/0),p=0;p<u;++p){var g=t[2*p],m=t[2*p+1];c=Math.min(c,g),f=Math.max(f,g),h=Math.min(h,m),d=Math.max(d,m),e[p]=p}c===f&&(f+=1+Math.abs(f)),h===d&&(d+=1+Math.abs(f));var v=1/(f-c),y=1/(d-h),b=Math.max(f-c,d-h);o=o||[0,0,0,0],o[0]=c,o[1]=h,o[2]=f,o[3]=d;var x=a.mallocInt32(u),_=0;l(c,h,b,0,u,0),s(x,t,e,r,u);for(var w=[],M=0,k=u,_=u-1;_>=0;--_){t[2*_]=(t[2*_]-c)*v,t[2*_+1]=(t[2*_+1]-h)*y;var A=x[_];A!==M&&(w.push(new i(b*Math.pow(.5,A),_+1,k-(_+1))),k=_+1,M=A)}return w.push(new i(b*Math.pow(.5,A+1),0,k)),a.free(x),w}var a=t("typedarray-pool"),s=t("./lib/sort");e.exports=o},{"./lib/sort":181,"typedarray-pool":449}],183:[function(t,e,r){"use strict";function n(t,e,r,n,i,o){this.plot=t,this.offsetBuffer=e,this.pickBuffer=r,this.weightBuffer=n,this.shader=i,this.pickShader=o,this.scales=[],this.size=12,this.borderSize=1,this.pointCount=0,this.color=[1,0,0,1],this.borderColor=[0,0,0,1],this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.pickOffset=0,this.points=null,this.xCoords=null}function i(t,e){var r=t.gl,i=a(r),s=a(r),l=a(r),u=o(r,c.pointVertex,c.pointFragment),h=o(r,c.pickVertex,c.pickFragment),f=new n(t,i,s,l,u,h);return f.update(e),t.addObject(f),f}var o=t("gl-shader"),a=t("gl-buffer"),s=t("binary-search-bounds"),l=t("snap-points-2d"),u=t("typedarray-pool"),c=t("./lib/shader");e.exports=i;var h=n.prototype;h.dispose=function(){this.shader.dispose(),this.pickShader.dispose(),this.offsetBuffer.dispose(),this.pickBuffer.dispose(),this.xCoords&&u.free(this.xCoords),this.plot.removeObject(this)},h.update=function(t){function e(e,r){return e in t?t[e]:r}t=t||{},this.size=e("size",12),this.color=e("color",[1,0,0,1]).slice(),this.borderSize=e("borderSize",1),this.borderColor=e("borderColor",[0,0,0,1]).slice(),this.xCoords&&u.free(this.xCoords);var r=t.positions,n=u.mallocFloat32(r.length),i=u.mallocInt32(r.length>>>1);n.set(r);var o=u.mallocFloat32(r.length);this.points=r,this.scales=l(n,i,o,this.bounds),this.offsetBuffer.update(n),this.pickBuffer.update(i),this.weightBuffer.update(o);for(var a=u.mallocFloat32(r.length>>>1),s=0,c=0;s<r.length;s+=2,++c)a[c]=n[s];u.free(i),u.free(n),u.free(o),this.xCoords=a,this.pointCount=r.length>>>1,this.pickOffset=0},h.drawPick=function(){var t=[1,0,0,0,1,0,0,0,1],e=[0,0,0,0];return function(r){var n=this.plot,i=this.pickShader,o=this.scales,a=this.offsetBuffer,l=this.pickBuffer,u=this.bounds,c=this.size,h=this.borderSize,f=n.gl,d=n.pickPixelRatio,p=n.viewBox,g=n.dataBox;if(0===this.pointCount)return r;var m=u[2]-u[0],v=u[3]-u[1],y=g[2]-g[0],b=g[3]-g[1],x=(p[2]-p[0])*d/n.pixelRatio,_=(p[3]-p[1])*d/n.pixelRatio,w=Math.min(y/x,b/_);t[0]=2*m/y,t[4]=2*v/b,t[6]=2*(u[0]-g[0])/y-1,t[7]=2*(u[1]-g[1])/b-1,this.pickOffset=r,e[0]=255&r,e[1]=r>>8&255,e[2]=r>>16&255,e[3]=r>>24&255,i.bind(),i.uniforms.matrix=t,i.uniforms.color=this.color,i.uniforms.borderColor=this.borderColor,i.uniforms.pointSize=d*(c+h),i.uniforms.pickOffset=e,0===this.borderSize?i.uniforms.centerFraction=2:i.uniforms.centerFraction=c/(c+h+1.25),a.bind(),i.attributes.position.pointer(),l.bind(),i.attributes.pickId.pointer(f.UNSIGNED_BYTE);for(var M=this.xCoords,k=(g[0]-u[0]-w*c*d)/m,A=(g[2]-u[0]+w*c*d)/m,T=o.length-1;T>=0;--T){var E=o[T];if(!(E.pixelSize<w&&T>1)){var S=E.offset,L=E.count+S,z=s.ge(M,k,S,L-1),I=s.lt(M,A,z,L-1)+1;I>z&&f.drawArrays(f.POINTS,z,I-z)}}return r+this.pointCount}}(),h.draw=function(){var t=[1,0,0,0,1,0,0,0,1];return function(){var e=this.plot,r=this.shader,n=this.scales,i=this.offsetBuffer,o=this.bounds,a=this.size,l=this.borderSize,u=e.gl,c=e.pixelRatio,h=e.viewBox,f=e.dataBox;if(0!==this.pointCount){var d=o[2]-o[0],p=o[3]-o[1],g=f[2]-f[0],m=f[3]-f[1],v=h[2]-h[0],y=h[3]-h[1],b=Math.min(g/v,m/y);t[0]=2*d/g,t[4]=2*p/m,t[6]=2*(o[0]-f[0])/g-1,t[7]=2*(o[1]-f[1])/m-1,r.bind(),r.uniforms.matrix=t,r.uniforms.color=this.color,r.uniforms.borderColor=this.borderColor,r.uniforms.pointSize=c*(a+l),r.uniforms.useWeight=1,0===this.borderSize?r.uniforms.centerFraction=2:r.uniforms.centerFraction=a/(a+l+1.25),i.bind(),r.attributes.position.pointer(),this.weightBuffer.bind(),r.attributes.weight.pointer();for(var x=this.xCoords,_=(f[0]-o[0]-b*a*c)/d,w=(f[2]-o[0]+b*a*c)/d,M=!0,k=n.length-1;k>=0;--k){var A=n[k];if(!(A.pixelSize<b&&k>1)){var T=A.offset,E=A.count+T,S=s.ge(x,_,T,E-1),L=s.lt(x,w,S,E-1)+1;L>S&&u.drawArrays(u.POINTS,S,L-S),M&&(M=!1,r.uniforms.useWeight=0)}}}}}(),h.pick=function(t,e,r){var n=this.pickOffset,i=this.pointCount;if(r<n||r>=n+i)return null;var o=r-n,a=this.points;return{object:this,pointId:o,dataCoord:[a[2*o],a[2*o+1]]}}},{"./lib/shader":179,"binary-search-bounds":180,"gl-buffer":121,"gl-shader":190,"snap-points-2d":182,"typedarray-pool":449}],184:[function(t,e,r){"use strict";function n(t,e){var r=o[e];if(r||(r=o[e]={}),t in r)return r[t];for(var n=i(t,{textAlign:"center",textBaseline:"middle",lineHeight:1,font:e}),a=i(t,{triangles:!0,textAlign:"center",textBaseline:"middle",lineHeight:1,font:e}),s=[[1/0,1/0],[-(1/0),-(1/0)]],l=0;l<n.positions.length;++l)for(var u=n.positions[l],c=0;c<2;++c)s[0][c]=Math.min(s[0][c],u[c]),s[1][c]=Math.max(s[1][c],u[c]);return r[t]=[a,n,s]}var i=t("vectorize-text");e.exports=n;var o={}},{"vectorize-text":460}],185:[function(t,e,r){function n(t,e){var r=i(t,e),n=r.attributes;return n.position.location=0,n.color.location=1,n.glyph.location=2,n.id.location=3,r}var i=t("gl-shader"),o="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\n\nuniform vec4 highlightId;\nuniform float highlightScale;\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   || \n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = 1.0;\n    if(distance(highlightId, id) < 0.0001) {\n      scale = highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1);\n    vec4 viewPosition = view * worldPosition;\n    viewPosition = viewPosition / viewPosition.w;\n    vec4 clipPosition = projection * (viewPosition + scale * vec4(glyph.x, -glyph.y, 0, 0));\n    \n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}",a="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float highlightScale, pixelRatio;\nuniform vec4 highlightId;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = pixelRatio;\n    if(distance(highlightId.bgr, id.bgr) < 0.001) {\n      scale *= highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1.0);\n    vec4 viewPosition = view * worldPosition;\n    vec4 clipPosition = projection * viewPosition;\n    clipPosition /= clipPosition.w;\n    \n    gl_Position = clipPosition + vec4(screenSize * scale * vec2(glyph.x, -glyph.y), 0.0, 0.0);\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}",s="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform float highlightScale;\nuniform vec4 highlightId;\nuniform vec3 axes[2];\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float scale, pixelRatio;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   ||\n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float lscale = pixelRatio * scale;\n    if(distance(highlightId, id) < 0.0001) {\n      lscale *= highlightScale;\n    }\n\n    vec4 clipCenter   = projection * view * model * vec4(position, 1);\n    vec3 dataPosition = position + 0.5*lscale*(axes[0] * glyph.x + axes[1] * glyph.y) * clipCenter.w * screenSize.y;\n    vec4 clipPosition = projection * view * model * vec4(dataPosition, 1);\n\n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = dataPosition;\n  }\n}\n",l="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float opacity;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   ||\n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = interpColor * opacity;\n  }\n}\n",u="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float pickGroup;\n\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   || \n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = vec4(pickGroup, pickId.bgr);\n  }\n}",c=[{name:"position",type:"vec3"},{name:"color",type:"vec4"},{name:"glyph",type:"vec2"},{name:"id",type:"vec4"}],h={vertex:o,fragment:l,attributes:c},f={vertex:a,fragment:l,attributes:c},d={vertex:s,fragment:l,attributes:c},p={vertex:o,fragment:u,attributes:c},g={vertex:a,fragment:u,attributes:c},m={vertex:s,fragment:u,attributes:c};r.createPerspective=function(t){return n(t,h)},r.createOrtho=function(t){return n(t,f)},r.createProject=function(t){return n(t,d)},r.createPickPerspective=function(t){return n(t,p)},r.createPickOrtho=function(t){return n(t,g)},r.createPickProject=function(t){return n(t,m)}},{"gl-shader":190}],186:[function(t,e,r){"use strict";function n(t,e){var r=t[0],n=t[1],i=t[2],o=t[3];return t[0]=e[0]*r+e[4]*n+e[8]*i+e[12]*o,t[1]=e[1]*r+e[5]*n+e[9]*i+e[13]*o,t[2]=e[2]*r+e[6]*n+e[10]*i+e[14]*o,t[3]=e[3]*r+e[7]*n+e[11]*i+e[15]*o,t}function i(t,e,r,i){return n(i,i,r),n(i,i,e),n(i,i,t)}function o(t,e){this.index=t,this.dataCoordinate=this.position=e}function a(t,e,r,n,i,a,s,l,u,c,h,f){this.gl=t,this.pixelRatio=1,this.shader=e,this.orthoShader=r,this.projectShader=n,this.pointBuffer=i,this.colorBuffer=a,this.glyphBuffer=s,this.idBuffer=l,this.vao=u,this.vertexCount=0,this.lineVertexCount=0,this.opacity=1,this.lineWidth=0,this.projectScale=[2/3,2/3,2/3],this.projectOpacity=[1,1,1],this.pickId=0,this.pickPerspectiveShader=c,this.pickOrthoShader=h,this.pickProjectShader=f,this.points=[],this._selectResult=new o(0,[0,0,0]),this.useOrtho=!0,this.bounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.axesProject=[!0,!0,!0],this.axesBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.highlightId=[1,1,1,1],this.highlightScale=2,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.dirty=!0}function s(t){return t[0]=t[1]=t[2]=0,t}function l(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=1,t}function u(t,e,r,n){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[r]=n,t}function c(t){for(var e=L,r=0;r<2;++r)for(var n=0;n<3;++n)e[r][n]=Math.max(Math.min(t[r][n],1e8),-1e8);return e}function h(t,e,r,n,o){var a,h=e.axesProject,f=e.gl,d=t.uniforms,p=r.model||x,g=r.view||x,m=r.projection||x,y=e.axesBounds,b=c(e.clipBounds);a=e.axes?e.axes.lastCubeProps.axis:[1,1,1],w[0]=2/f.drawingBufferWidth,w[1]=2/f.drawingBufferHeight,t.bind(),d.view=g,d.projection=m,d.screenSize=w,d.highlightId=e.highlightId,d.highlightScale=e.highlightScale,d.clipBounds=b,d.pickGroup=e.pickId/255,d.pixelRatio=e.pixelRatio;for(var _=0;_<3;++_)if(h[_]&&e.projectOpacity[_]<1===n){d.scale=e.projectScale[_],d.opacity=e.projectOpacity[_];for(var L=E,z=0;z<16;++z)L[z]=0;for(var z=0;z<4;++z)L[5*z]=1;L[5*_]=0,a[_]<0?L[12+_]=y[0][_]:L[12+_]=y[1][_],v(L,p,L),d.model=L;var I=(_+1)%3,C=(_+2)%3,P=s(M),R=s(k);P[I]=1,R[C]=1;var D=i(m,g,p,l(A,P)),O=i(m,g,p,l(T,R));if(Math.abs(D[1])>Math.abs(O[1])){var F=D;D=O,O=F,F=P,P=R,R=F;var j=I;I=C,C=j}D[0]<0&&(P[I]=-1),O[1]>0&&(R[C]=-1);for(var N=0,B=0,z=0;z<4;++z)N+=Math.pow(p[4*I+z],2),B+=Math.pow(p[4*C+z],2);P[I]/=Math.sqrt(N),R[C]/=Math.sqrt(B),d.axes[0]=P,d.axes[1]=R,d.fragClipBounds[0]=u(S,b[0],_,-1e8),d.fragClipBounds[1]=u(S,b[1],_,1e8),e.vao.draw(f.TRIANGLES,e.vertexCount),e.lineWidth>0&&(f.lineWidth(e.lineWidth),e.vao.draw(f.LINES,e.lineVertexCount,e.vertexCount))}}function f(t,e,r,n,i,o){var a=r.gl;if(r.vao.bind(),i===r.opacity<1||o){t.bind();var s=t.uniforms;s.model=n.model||x,s.view=n.view||x,s.projection=n.projection||x,w[0]=2/a.drawingBufferWidth,w[1]=2/a.drawingBufferHeight,s.screenSize=w,s.highlightId=r.highlightId,s.highlightScale=r.highlightScale,s.fragClipBounds=C,s.clipBounds=r.axes.bounds,s.opacity=r.opacity,s.pickGroup=r.pickId/255,s.pixelRatio=r.pixelRatio,r.vao.draw(a.TRIANGLES,r.vertexCount),r.lineWidth>0&&(a.lineWidth(r.lineWidth),r.vao.draw(a.LINES,r.lineVertexCount,r.vertexCount))}h(e,r,n,i,o),r.vao.unbind()}function d(t){var e=t.gl,r=y.createPerspective(e),n=y.createOrtho(e),i=y.createProject(e),o=y.createPickPerspective(e),s=y.createPickOrtho(e),l=y.createPickProject(e),u=p(e),c=p(e),h=p(e),f=p(e),d=g(e,[{buffer:u,size:3,type:e.FLOAT},{buffer:c,size:4,type:e.FLOAT},{buffer:h,size:2,type:e.FLOAT},{buffer:f,size:4,type:e.UNSIGNED_BYTE,normalized:!0}]),m=new a(e,r,n,i,u,c,h,f,d,o,s,l);return m.update(t),m}var p=t("gl-buffer"),g=t("gl-vao"),m=t("typedarray-pool"),v=t("gl-mat4/multiply"),y=t("./lib/shaders"),b=t("./lib/glyphs"),x=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1];e.exports=d;var _=a.prototype;_.pickSlots=1,_.setPickBase=function(t){this.pickId=t},_.isTransparent=function(){if(this.opacity<1)return!0;for(var t=0;t<3;++t)if(this.axesProject[t]&&this.projectOpacity[t]<1)return!0;return!1},_.isOpaque=function(){if(this.opacity>=1)return!0;for(var t=0;t<3;++t)if(this.axesProject[t]&&this.projectOpacity[t]>=1)return!0;return!1};var w=[0,0],M=[0,0,0],k=[0,0,0],A=[0,0,0,1],T=[0,0,0,1],E=x.slice(),S=[0,0,0],L=[[0,0,0],[0,0,0]],z=[-1e8,-1e8,-1e8],I=[1e8,1e8,1e8],C=[z,I];_.draw=function(t){var e=this.useOrtho?this.orthoShader:this.shader;f(e,this.projectShader,this,t,!1,!1)},_.drawTransparent=function(t){var e=this.useOrtho?this.orthoShader:this.shader;f(e,this.projectShader,this,t,!0,!1)},_.drawPick=function(t){var e=this.useOrtho?this.pickOrthoShader:this.pickPerspectiveShader;f(e,this.pickProjectShader,this,t,!1,!0)},_.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=t.value[2]+(t.value[1]<<8)+(t.value[0]<<16);if(e>=this.pointCount||e<0)return null;var r=this.points[e],n=this._selectResult;n.index=e;for(var i=0;i<3;++i)n.position[i]=n.dataCoordinate[i]=r[i];return n},_.highlight=function(t){if(t){var e=t.index,r=255&e,n=e>>8&255,i=e>>16&255;this.highlightId=[r/255,n/255,i/255,0]}else this.highlightId=[1,1,1,1]},_.update=function(t){if(t=t||{},"perspective"in t&&(this.useOrtho=!t.perspective),"orthographic"in t&&(this.useOrtho=!!t.orthographic),"lineWidth"in t&&(this.lineWidth=t.lineWidth),"project"in t)if(Array.isArray(t.project))this.axesProject=t.project;else{var e=!!t.project;this.axesProject=[e,e,e]}if("projectScale"in t)if(Array.isArray(t.projectScale))this.projectScale=t.projectScale.slice();else{var r=+t.projectScale;this.projectScale=[r,r,r]}if("projectOpacity"in t)if(Array.isArray(t.projectOpacity))this.projectOpacity=t.projectOpacity.slice();else{var r=+t.projectOpacity;this.projectOpacity=[r,r,r]}"opacity"in t&&(this.opacity=t.opacity),this.dirty=!0;var n=t.position;if(n){var i=t.font||"normal",o=t.alignment||[0,0],a=[1/0,1/0,1/0],s=[-(1/0),-(1/0),-(1/0)],l=t.glyph,u=t.color,c=t.size,h=t.angle,f=t.lineColor,d=0,p=0,g=0,v=n.length;t:for(var y=0;y<v;++y){for(var x=n[y],_=0;_<3;++_)if(isNaN(x[_])||!isFinite(x[_]))continue t;var w;w=Array.isArray(l)?b(l[y],i):l?b(l,i):b("\u25cf",i);var M=w[0],k=w[1],A=w[2];p+=3*M.cells.length,g+=2*k.edges.length}var T=p+g,E=m.mallocFloat(3*T),S=m.mallocFloat(4*T),L=m.mallocFloat(2*T),z=m.mallocUint32(T),I=[0,o[1]],C=0,P=p,R=[0,0,0,1],D=[0,0,0,1],O=Array.isArray(u)&&Array.isArray(u[0]),F=Array.isArray(f)&&Array.isArray(f[0]);t:for(var y=0;y<v;++y){for(var x=n[y],_=0;_<3;++_){if(isNaN(x[_])||!isFinite(x[_])){d+=1;continue t}s[_]=Math.max(s[_],x[_]),a[_]=Math.min(a[_],x[_])}var w;w=Array.isArray(l)?b(l[y],i):l?b(l,i):b("\u25cf",i);var M=w[0],k=w[1],A=w[2];if(Array.isArray(u)){var j;if(j=O?u[y]:u,3===j.length){for(var _=0;_<3;++_)R[_]=j[_];R[3]=1}else if(4===j.length)for(var _=0;_<4;++_)R[_]=j[_]}else R[0]=R[1]=R[2]=0,R[3]=1;if(Array.isArray(f)){var j;if(j=F?f[y]:f,3===j.length){for(var _=0;_<3;++_)D[_]=j[_];D[_]=1}else if(4===j.length)for(var _=0;_<4;++_)D[_]=j[_]}else D[0]=D[1]=D[2]=0,D[3]=1;var N=.5;Array.isArray(c)?N=+c[y]:c?N=+c:this.useOrtho&&(N=12);var B=0;Array.isArray(h)?B=+h[y]:h&&(B=+h);for(var U=Math.cos(B),V=Math.sin(B),x=n[y],_=0;_<3;++_)s[_]=Math.max(s[_],x[_]),a[_]=Math.min(a[_],x[_]);o[0]<0?I[0]=o[0]*(1+A[1][0]):o[0]>0&&(I[0]=-o[0]*(1+A[0][0]));for(var q=M.cells,G=M.positions,_=0;_<q.length;++_)for(var H=q[_],X=0;X<3;++X){for(var Y=0;Y<3;++Y)E[3*C+Y]=x[Y];for(var Y=0;Y<4;++Y)S[4*C+Y]=R[Y];z[C]=d;var W=G[H[X]];L[2*C]=N*(U*W[0]-V*W[1]+I[0]),L[2*C+1]=N*(V*W[0]+U*W[1]+I[1]),C+=1}for(var q=k.edges,G=k.positions,_=0;_<q.length;++_)for(var H=q[_],X=0;X<2;++X){for(var Y=0;Y<3;++Y)E[3*P+Y]=x[Y];for(var Y=0;Y<4;++Y)S[4*P+Y]=D[Y];z[P]=d;var W=G[H[X]];L[2*P]=N*(U*W[0]-V*W[1]+I[0]),L[2*P+1]=N*(V*W[0]+U*W[1]+I[1]),P+=1}d+=1}this.vertexCount=p,this.lineVertexCount=g,this.pointBuffer.update(E),this.colorBuffer.update(S),this.glyphBuffer.update(L),this.idBuffer.update(new Uint32Array(z)),m.free(E),m.free(S),m.free(L),m.free(z),this.bounds=[a,s],this.points=n,this.pointCount=n.length}},_.dispose=function(){this.shader.dispose(),this.orthoShader.dispose(),this.pickPerspectiveShader.dispose(),this.pickOrthoShader.dispose(),this.vao.dispose(),this.pointBuffer.dispose(),this.colorBuffer.dispose(),this.glyphBuffer.dispose(),this.idBuffer.dispose()}},{"./lib/glyphs":184,"./lib/shaders":185,"gl-buffer":121,"gl-mat4/multiply":144,"gl-vao":206,"typedarray-pool":449}],187:[function(t,e,r){"use strict";r.boxVertex="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n",r.boxFragment="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"},{}],188:[function(t,e,r){"use strict";function n(t,e,r){this.plot=t,this.boxBuffer=e,this.boxShader=r,this.enabled=!0,this.selectBox=[1/0,1/0,-(1/0),-(1/0)],this.borderColor=[0,0,0,1],this.innerFill=!1,this.innerColor=[0,0,0,.25],this.outerFill=!0,this.outerColor=[0,0,0,.5],this.borderWidth=10}function i(t,e){var r=t.gl,i=a(r,[0,0,0,1,1,0,1,1]),l=o(r,s.boxVertex,s.boxFragment),u=new n(t,i,l);return u.update(e),t.addOverlay(u),u}var o=t("gl-shader"),a=t("gl-buffer"),s=t("./lib/shaders");e.exports=i;var l=n.prototype;l.draw=function(){if(this.enabled){var t=this.plot,e=this.selectBox,r=this.borderWidth,n=(this.innerFill,this.innerColor),i=(this.outerFill,this.outerColor),o=this.borderColor,a=t.box,s=t.screenBox,l=t.dataBox,u=t.viewBox,c=t.pixelRatio,h=(e[0]-l[0])*(u[2]-u[0])/(l[2]-l[0])+u[0],f=(e[1]-l[1])*(u[3]-u[1])/(l[3]-l[1])+u[1],d=(e[2]-l[0])*(u[2]-u[0])/(l[2]-l[0])+u[0],p=(e[3]-l[1])*(u[3]-u[1])/(l[3]-l[1])+u[1];if(h=Math.max(h,u[0]),f=Math.max(f,u[1]),d=Math.min(d,u[2]),p=Math.min(p,u[3]),!(d<h||p<f)){a.bind();var 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f,p=0;n.prototype.dispose=function(){if(0===--this.count){for(var t=this.cache,e=t.gl,r=this.programs,n=0,i=r.length;n<i;++n){var o=t.programs[r[n]];o&&(delete t.programs[n],e.deleteProgram(o))}e.deleteShader(this.shader),delete t.shaders[this.type===e.FRAGMENT_SHADER|0][this.src]}};var g=i.prototype;g.getShaderReference=function(t,e){var r=this.gl,i=this.shaders[t===r.FRAGMENT_SHADER|0],a=i[e];if(a&&r.isShader(a.shader))a.count+=1;else{var s=o(r,t,e);a=i[e]=new n(p++,e,t,s,[],1,this)}return a},g.getProgram=function(t,e,r,n){var i=[t.id,e.id,r.join(":"),n.join(":")].join("@"),o=this.programs[i];return o&&this.gl.isProgram(o)||(this.programs[i]=o=a(this.gl,t.shader,e.shader,r,n),t.programs.push(i),e.programs.push(i)),o}},{"./GLError":191,"gl-format-compiler-error":129,"weakmap-shim":468}],197:[function(t,e,r){"use strict";function n(t){this.plot=t,this.enable=[!0,!0,!1,!1],this.width=[1,1,1,1],this.color=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.center=[1/0,1/0]}function i(t,e){var r=new n(t);return r.update(e),t.addOverlay(r),r}e.exports=i;var o=n.prototype;o.update=function(t){t=t||{},this.enable=(t.enable||[!0,!0,!1,!1]).slice(),this.width=(t.width||[1,1,1,1]).slice(),this.color=(t.color||[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]]).map(function(t){return t.slice()}),this.center=(t.center||[1/0,1/0]).slice(),this.plot.setOverlayDirty()},o.draw=function(){var t=this.enable,e=this.width,r=this.color,n=this.center,i=this.plot,o=i.line,a=i.dataBox,s=i.viewBox;if(o.bind(),a[0]<=n[0]&&n[0]<=a[2]&&a[1]<=n[1]&&n[1]<=a[3]){var l=s[0]+(n[0]-a[0])/(a[2]-a[0])*(s[2]-s[0]),u=s[1]+(n[1]-a[1])/(a[3]-a[1])*(s[3]-s[1]);t[0]&&o.drawLine(l,u,s[0],u,e[0],r[0]),t[1]&&o.drawLine(l,u,l,s[1],e[1],r[1]),t[2]&&o.drawLine(l,u,s[2],u,e[2],r[2]),t[3]&&o.drawLine(l,u,l,s[3],e[3],r[3])}},o.dispose=function(){this.plot.removeOverlay(this)}},{}],198:[function(t,e,r){"use strict";var n=t("gl-shader"),i="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, color;\nattribute float weight;\n\nuniform mat4 model, view, projection;\nuniform vec3 coordinates[3];\nuniform vec4 colors[3];\nuniform vec2 screenShape;\nuniform float lineWidth;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vertexPosition = mix(coordinates[0],\n    mix(coordinates[2], coordinates[1], 0.5 * (position + 1.0)), abs(position));\n\n  vec4 clipPos = projection * view * model * vec4(vertexPosition, 1.0);\n  vec2 clipOffset = (projection * view * model * vec4(color, 0.0)).xy;\n  vec2 delta = weight * clipOffset * screenShape;\n  vec2 lineOffset = normalize(vec2(delta.y, -delta.x)) / screenShape;\n\n  gl_Position   = vec4(clipPos.xy + clipPos.w * 0.5 * lineWidth * lineOffset, clipPos.z, clipPos.w);\n  fragColor     = color.x * colors[0] + color.y * colors[1] + color.z * colors[2];\n}\n",o="precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragColor;\n\nvoid main() {\n  gl_FragColor = fragColor;\n}";e.exports=function(t){return n(t,i,o,null,[{name:"position",type:"vec3"},{name:"color",type:"vec3"},{name:"weight",type:"float"}])}},{"gl-shader":190}],199:[function(t,e,r){"use strict";function n(t,e,r,n){this.gl=t,this.buffer=e,this.vao=r,this.shader=n,this.pixelRatio=1,this.bounds=[[-1e3,-1e3,-1e3],[1e3,1e3,1e3]],this.position=[0,0,0],this.lineWidth=[2,2,2],this.colors=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.enabled=[!0,!0,!0],this.drawSides=[!0,!0,!0],this.axes=null}function i(t,e){function r(t,e,r,n,o,a){var s=[t,e,r,0,0,0,1];s[n+3]=1,s[n]=o,i.push.apply(i,s),s[6]=-1,i.push.apply(i,s),s[n]=a,i.push.apply(i,s),i.push.apply(i,s),s[6]=1,i.push.apply(i,s),s[n]=o,i.push.apply(i,s)}var i=[];r(0,0,0,0,0,1),r(0,0,0,1,0,1),r(0,0,0,2,0,1),r(1,0,0,1,-1,1),r(1,0,0,2,-1,1),r(0,1,0,0,-1,1),r(0,1,0,2,-1,1),r(0,0,1,0,-1,1),r(0,0,1,1,-1,1);var l=o(t,i),u=a(t,[{type:t.FLOAT,buffer:l,size:3,offset:0,stride:28},{type:t.FLOAT,buffer:l,size:3,offset:12,stride:28},{type:t.FLOAT,buffer:l,size:1,offset:24,stride:28}]),c=s(t);c.attributes.position.location=0,c.attributes.color.location=1,c.attributes.weight.location=2;var h=new n(t,l,u,c);return h.update(e),h}var o=t("gl-buffer"),a=t("gl-vao"),s=t("./shaders/index");e.exports=i;var l=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],u=n.prototype,c=[0,0,0],h=[0,0,0],f=[0,0];u.isTransparent=function(){return!1},u.drawTransparent=function(t){},u.draw=function(t){var e=this.gl,r=this.vao,n=this.shader;r.bind(),n.bind();var i,o=t.model||l,a=t.view||l,s=t.projection||l;this.axes&&(i=this.axes.lastCubeProps.axis);for(var u=c,d=h,p=0;p<3;++p)i&&i[p]<0?(u[p]=this.bounds[0][p],d[p]=this.bounds[1][p]):(u[p]=this.bounds[1][p],d[p]=this.bounds[0][p]);f[0]=e.drawingBufferWidth,f[1]=e.drawingBufferHeight,n.uniforms.model=o,n.uniforms.view=a,n.uniforms.projection=s,n.uniforms.coordinates=[this.position,u,d],n.uniforms.colors=this.colors,n.uniforms.screenShape=f;for(var p=0;p<3;++p)n.uniforms.lineWidth=this.lineWidth[p]*this.pixelRatio,this.enabled[p]&&(r.draw(e.TRIANGLES,6,6*p),this.drawSides[p]&&r.draw(e.TRIANGLES,12,18+12*p));r.unbind()},u.update=function(t){t&&("bounds"in t&&(this.bounds=t.bounds),"position"in t&&(this.position=t.position),"lineWidth"in t&&(this.lineWidth=t.lineWidth),"colors"in t&&(this.colors=t.colors),"enabled"in t&&(this.enabled=t.enabled),"drawSides"in t&&(this.drawSides=t.drawSides))},u.dispose=function(){this.vao.dispose(),this.buffer.dispose(),this.shader.dispose()}},{"./shaders/index":198,"gl-buffer":121,"gl-vao":206}],200:[function(t,e,r){var n=t("gl-shader"),i="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute vec3 f;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection, inverseModel;\nuniform vec3 lightPosition, eyePosition;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  worldCoordinate = vec3(uv.zw, f.x);\n  vec4 worldPosition = model * vec4(worldCoordinate, 1.0);\n  vec4 clipPosition = projection * view * worldPosition;\n  gl_Position = clipPosition;\n  kill = f.y;\n  value = f.z;\n  planeCoordinate = uv.xy;\n\n  //Lighting geometry parameters\n  vec4 cameraCoordinate = view * worldPosition;\n  cameraCoordinate.xyz /= cameraCoordinate.w;\n  lightDirection = lightPosition - cameraCoordinate.xyz;\n  eyeDirection   = eyePosition - cameraCoordinate.xyz;\n  surfaceNormal  = normalize((vec4(normal,0) * inverseModel).xyz);\n}\n",o="precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat beckmannSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness) {\n  return beckmannDistribution_2_0(dot(surfaceNormal, normalize(lightDirection + viewDirection)), roughness);\n}\n\n\n\nuniform vec3 lowerBound, upperBound;\nuniform float contourTint;\nuniform vec4 contourColor;\nuniform sampler2D colormap;\nuniform vec3 clipBounds[2];\nuniform float roughness, fresnel, kambient, kdiffuse, kspecular, opacity;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(surfaceNormal);\n  vec3 V = normalize(eyeDirection);\n  vec3 L = normalize(lightDirection);\n\n  if(gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = beckmannSpecular_1_1(L, V, N, roughness);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = texture2D(colormap, vec2(value, value));\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = mix(litColor, contourColor, contourTint) * opacity;\n}\n",a="precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute float f;\n\nuniform mat3 permutation;\nuniform mat4 model, view, projection;\nuniform float height, zOffset;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\n\nvoid main() {\n  vec3 dataCoordinate = permutation * vec3(uv.xy, height);\n  vec4 worldPosition = model * vec4(dataCoordinate, 1.0);\n\n  vec4 clipPosition = projection * view * worldPosition;\n  clipPosition.z = clipPosition.z + zOffset;\n\n  gl_Position = clipPosition;\n  value = f;\n  kill = -1.0;\n  worldCoordinate = dataCoordinate;\n  planeCoordinate = uv.zw;\n\n  //Don't do lighting for contours\n  surfaceNormal   = vec3(1,0,0);\n  eyeDirection    = vec3(0,1,0);\n  lightDirection  = vec3(0,0,1);\n}\n",s="precision mediump float;\n#define GLSLIFY 1\n\nuniform vec2 shape;\nuniform vec3 clipBounds[2];\nuniform float pickId;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 surfaceNormal;\n\nvec2 splitFloat(float v) {\n  float vh = 255.0 * v;\n  float upper = floor(vh);\n  float lower = fract(vh);\n  return vec2(upper / 255.0, floor(lower * 16.0) / 16.0);\n}\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n  vec2 ux = splitFloat(planeCoordinate.x / shape.x);\n  vec2 uy = splitFloat(planeCoordinate.y / shape.y);\n  gl_FragColor = vec4(pickId, ux.x, uy.x, ux.y + (uy.y/16.0));\n}\n";r.createShader=function(t){var e=n(t,i,o,null,[{name:"uv",type:"vec4"},{name:"f",type:"vec3"},{name:"normal",type:"vec3"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e.attributes.normal.location=2,e},r.createPickShader=function(t){var e=n(t,i,s,null,[{name:"uv",type:"vec4"},{name:"f",type:"vec3"},{name:"normal",type:"vec3"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e.attributes.normal.location=2,e},r.createContourShader=function(t){var e=n(t,a,o,null,[{name:"uv",type:"vec4"},{name:"f",type:"float"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e},r.createPickContourShader=function(t){var e=n(t,a,s,null,[{name:"uv",type:"vec4"},{name:"f",type:"float"}]);return e.attributes.uv.location=0,e.attributes.f.location=1,e}},{"gl-shader":190}],201:[function(t,e,r){"use strict";function n(t,e,r,n,i){this.position=t,this.index=e,this.uv=r,this.level=n,this.dataCoordinate=i}function i(t){var e=x([y({colormap:t,nshades:O,format:"rgba"}).map(function(t){return[t[0],t[1],t[2],255*t[3]]})]);return b.divseq(e,255),e}function o(t,e,r,i,o,a,s,l,u,c,h,f,d,p){this.gl=t,this.shape=e,this.bounds=r,this.intensityBounds=[],this._shader=i,this._pickShader=o,this._coordinateBuffer=a,this._vao=s,this._colorMap=l,this._contourShader=u,this._contourPickShader=c,this._contourBuffer=h,this._contourVAO=f,this._contourOffsets=[[],[],[]],this._contourCounts=[[],[],[]],this._vertexCount=0,this._pickResult=new n([0,0,0],[0,0],[0,0],[0,0,0],[0,0,0]),this._dynamicBuffer=d,this._dynamicVAO=p,this._dynamicOffsets=[0,0,0],this._dynamicCounts=[0,0,0],this.contourWidth=[1,1,1],this.contourLevels=[[1],[1],[1]],this.contourTint=[0,0,0],this.contourColor=[[.5,.5,.5,1],[.5,.5,.5,1],[.5,.5,.5,1]],this.showContour=!0,this.showSurface=!0,this.enableHighlight=[!0,!0,!0],this.highlightColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.highlightTint=[1,1,1],this.highlightLevel=[-1,-1,-1],this.enableDynamic=[!0,!0,!0],this.dynamicLevel=[NaN,NaN,NaN],this.dynamicColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.dynamicTint=[1,1,1],this.dynamicWidth=[1,1,1],this.axesBounds=[[1/0,1/0,1/0],[-(1/0),-(1/0),-(1/0)]],this.surfaceProject=[!1,!1,!1],this.contourProject=[[!1,!1,!1],[!1,!1,!1],[!1,!1,!1]],this.colorBounds=[!1,!1],this._field=[_(v.mallocFloat(1024),[0,0]),_(v.mallocFloat(1024),[0,0]),_(v.mallocFloat(1024),[0,0])],this.pickId=1,this.clipBounds=[[-(1/0),-(1/0),-(1/0)],[1/0,1/0,1/0]],this.snapToData=!1,this.opacity=1,this.lightPosition=[10,1e4,0],this.ambientLight=.8,this.diffuseLight=.8,this.specularLight=2,this.roughness=.5,this.fresnel=1.5,this.dirty=!0}function a(t,e){var r,n,i,o=e.axes&&e.axes.lastCubeProps.axis||j,a=e.showSurface,s=e.showContour;for(r=0;r<3;++r)for(a=a||e.surfaceProject[r],n=0;n<3;++n)s=s||e.contourProject[r][n];for(r=0;r<3;++r){var l=N.projections[r];for(n=0;n<16;++n)l[n]=0;for(n=0;n<4;++n)l[5*n]=1;l[5*r]=0,l[12+r]=e.axesBounds[+(o[r]>0)][r],M(l,t.model,l);var u=N.clipBounds[r];for(i=0;i<2;++i)for(n=0;n<3;++n)u[i][n]=t.clipBounds[i][n];u[0][r]=-1e8,u[1][r]=1e8}return N.showSurface=a,N.showContour=s,N}function s(t,e){t=t||{};var r=this.gl;r.disable(r.CULL_FACE),this._colorMap.bind(0);var n=B;n.model=t.model||P,n.view=t.view||P,n.projection=t.projection||P,n.lowerBound=[this.bounds[0][0],this.bounds[0][1],this.colorBounds[0]||this.bounds[0][2]],n.upperBound=[this.bounds[1][0],this.bounds[1][1],this.colorBounds[1]||this.bounds[1][2]],n.contourColor=this.contourColor[0],n.inverseModel=k(n.inverseModel,n.model);for(var i=0;i<2;++i)for(var o=n.clipBounds[i],s=0;s<3;++s)o[s]=Math.min(Math.max(this.clipBounds[i][s],-1e8),1e8);n.kambient=this.ambientLight,n.kdiffuse=this.diffuseLight,n.kspecular=this.specularLight,n.roughness=this.roughness,n.fresnel=this.fresnel,n.opacity=this.opacity,n.height=0,n.permutation=V;var l=U;for(M(l,n.view,n.model),M(l,n.projection,l),k(l,l),i=0;i<3;++i)n.eyePosition[i]=l[12+i]/l[15];var u=l[15];for(i=0;i<3;++i)u+=this.lightPosition[i]*l[4*i+3];for(i=0;i<3;++i){var c=l[12+i];for(s=0;s<3;++s)c+=l[4*s+i]*this.lightPosition[s];n.lightPosition[i]=c/u}var h=a(n,this);if(h.showSurface&&e===this.opacity<1){for(this._shader.bind(),this._shader.uniforms=n,this._vao.bind(),this.showSurface&&this._vertexCount&&this._vao.draw(r.TRIANGLES,this._vertexCount),i=0;i<3;++i)this.surfaceProject[i]&&this.vertexCount&&(this._shader.uniforms.model=h.projections[i],this._shader.uniforms.clipBounds=h.clipBounds[i],this._vao.draw(r.TRIANGLES,this._vertexCount));this._vao.unbind()}if(h.showContour&&!e){var f=this._contourShader;n.kambient=1,n.kdiffuse=0,n.kspecular=0,n.opacity=1,f.bind(),f.uniforms=n;var d=this._contourVAO;for(d.bind(),i=0;i<3;++i)for(f.uniforms.permutation=D[i],r.lineWidth(this.contourWidth[i]),s=0;s<this.contourLevels[i].length;++s)this._contourCounts[i][s]&&(s===this.highlightLevel[i]?(f.uniforms.contourColor=this.highlightColor[i],f.uniforms.contourTint=this.highlightTint[i]):0!==s&&s-1!==this.highlightLevel[i]||(f.uniforms.contourColor=this.contourColor[i],f.uniforms.contourTint=this.contourTint[i]),f.uniforms.height=this.contourLevels[i][s],d.draw(r.LINES,this._contourCounts[i][s],this._contourOffsets[i][s]));for(i=0;i<3;++i)for(f.uniforms.model=h.projections[i],f.uniforms.clipBounds=h.clipBounds[i],s=0;s<3;++s)if(this.contourProject[i][s]){f.uniforms.permutation=D[s],r.lineWidth(this.contourWidth[s]);for(var p=0;p<this.contourLevels[s].length;++p)p===this.highlightLevel[s]?(f.uniforms.contourColor=this.highlightColor[s],f.uniforms.contourTint=this.highlightTint[s]):0!==p&&p-1!==this.highlightLevel[s]||(f.uniforms.contourColor=this.contourColor[s],f.uniforms.contourTint=this.contourTint[s]),f.uniforms.height=this.contourLevels[s][p],d.draw(r.LINES,this._contourCounts[s][p],this._contourOffsets[s][p])}for(d=this._dynamicVAO,d.bind(),i=0;i<3;++i)if(0!==this._dynamicCounts[i])for(f.uniforms.model=n.model,f.uniforms.clipBounds=n.clipBounds,f.uniforms.permutation=D[i],r.lineWidth(this.dynamicWidth[i]),f.uniforms.contourColor=this.dynamicColor[i],f.uniforms.contourTint=this.dynamicTint[i],f.uniforms.height=this.dynamicLevel[i],d.draw(r.LINES,this._dynamicCounts[i],this._dynamicOffsets[i]),s=0;s<3;++s)this.contourProject[s][i]&&(f.uniforms.model=h.projections[s],f.uniforms.clipBounds=h.clipBounds[s],d.draw(r.LINES,this._dynamicCounts[i],this._dynamicOffsets[i]));d.unbind()}}function l(t,e){var r=e.shape.slice(),n=t.shape.slice();b.assign(t.lo(1,1).hi(r[0],r[1]),e),b.assign(t.lo(1).hi(r[0],1),e.hi(r[0],1)),b.assign(t.lo(1,n[1]-1).hi(r[0],1),e.lo(0,r[1]-1).hi(r[0],1)),b.assign(t.lo(0,1).hi(1,r[1]),e.hi(1)),b.assign(t.lo(n[0]-1,1).hi(1,r[1]),e.lo(r[0]-1)),t.set(0,0,e.get(0,0)),t.set(0,n[1]-1,e.get(0,r[1]-1)),t.set(n[0]-1,0,e.get(r[0]-1,0)),t.set(n[0]-1,n[1]-1,e.get(r[0]-1,r[1]-1))}function u(t,e){return Array.isArray(t)?[e(t[0]),e(t[1]),e(t[2])]:[e(t),e(t),e(t)]}function c(t){return Array.isArray(t)?3===t.length?[t[0],t[1],t[2],1]:[t[0],t[1],t[2],t[3]]:[0,0,0,1]}function h(t){if(Array.isArray(t)){if(Array.isArray(t))return[c(t[0]),c(t[1]),c(t[2])];var e=c(t);return[e.slice(),e.slice(),e.slice()]}}function f(t){var e=t.gl,r=S(e),n=z(e),i=L(e),a=I(e),s=p(e),l=g(e,[{buffer:s,size:4,stride:C,offset:0},{buffer:s,size:3,stride:C,offset:16},{buffer:s,size:3,stride:C,offset:28}]),u=p(e),c=g(e,[{buffer:u,size:4,stride:20,offset:0},{buffer:u,size:1,stride:20,offset:16}]),h=p(e),f=g(e,[{buffer:h,size:2,type:e.FLOAT}]),d=m(e,1,O,e.RGBA,e.UNSIGNED_BYTE);d.minFilter=e.LINEAR,d.magFilter=e.LINEAR;var v=new o(e,[0,0],[[0,0,0],[0,0,0]],r,n,s,l,d,i,a,u,c,h,f),y={levels:[[],[],[]]};for(var b in t)y[b]=t[b];return y.colormap=y.colormap||"jet",v.update(y),v}e.exports=f;var d=t("bit-twiddle"),p=t("gl-buffer"),g=t("gl-vao"),m=t("gl-texture2d"),v=t("typedarray-pool"),y=t("colormap"),b=t("ndarray-ops"),x=t("ndarray-pack"),_=t("ndarray"),w=t("surface-nets"),M=t("gl-mat4/multiply"),k=t("gl-mat4/invert"),A=t("binary-search-bounds"),T=t("ndarray-gradient"),E=t("./lib/shaders"),S=E.createShader,L=E.createContourShader,z=E.createPickShader,I=E.createPickContourShader,C=40,P=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],R=[[0,0],[0,1],[1,0],[1,1],[1,0],[0,1]],D=[[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0]];!function(){for(var t=0;t<3;++t){var e=D[t],r=(t+1)%3,n=(t+2)%3;e[r+0]=1,e[n+3]=1,e[t+6]=1}}();var O=265,F=o.prototype;F.isTransparent=function(){return this.opacity<1},F.isOpaque=function(){if(this.opacity>=1)return!0;for(var t=0;t<3;++t)if(this._contourCounts[t].length>0||this._dynamicCounts[t]>0)return!0;return!1},F.pickSlots=1,F.setPickBase=function(t){this.pickId=t};var j=[0,0,0],N={showSurface:!1,showContour:!1,projections:[P.slice(),P.slice(),P.slice()],clipBounds:[[[0,0,0],[0,0,0]],[[0,0,0],[0,0,0]],[[0,0,0],[0,0,0]]]},B={model:P,view:P,projection:P,inverseModel:P.slice(),lowerBound:[0,0,0],upperBound:[0,0,0],colorMap:0,clipBounds:[[0,0,0],[0,0,0]],height:0,contourTint:0,contourColor:[0,0,0,1],permutation:[1,0,0,0,1,0,0,0,1],zOffset:-1e-4,kambient:1,kdiffuse:1,kspecular:1,lightPosition:[1e3,1e3,1e3],eyePosition:[0,0,0],roughness:1,fresnel:1,opacity:1},U=P.slice(),V=[1,0,0,0,1,0,0,0,1];F.draw=function(t){return s.call(this,t,!1)},F.drawTransparent=function(t){return s.call(this,t,!0)};var q={model:P,view:P,projection:P,inverseModel:P,clipBounds:[[0,0,0],[0,0,0]],height:0,shape:[0,0],pickId:0,lowerBound:[0,0,0],upperBound:[0,0,0],zOffset:0,permutation:[1,0,0,0,1,0,0,0,1],lightPosition:[0,0,0],eyePosition:[0,0,0]};F.drawPick=function(t){t=t||{};var e=this.gl;e.disable(e.CULL_FACE);var r=q;r.model=t.model||P,r.view=t.view||P,r.projection=t.projection||P,r.shape=this._field[2].shape,r.pickId=this.pickId/255,r.lowerBound=this.bounds[0],r.upperBound=this.bounds[1],r.permutation=V;for(var n=0;n<2;++n)for(var i=r.clipBounds[n],o=0;o<3;++o)i[o]=Math.min(Math.max(this.clipBounds[n][o],-1e8),1e8);var s=a(r,this);if(s.showSurface){for(this._pickShader.bind(),this._pickShader.uniforms=r,this._vao.bind(),this._vao.draw(e.TRIANGLES,this._vertexCount),n=0;n<3;++n)this.surfaceProject[n]&&(this._pickShader.uniforms.model=s.projections[n],this._pickShader.uniforms.clipBounds=s.clipBounds[n],this._vao.draw(e.TRIANGLES,this._vertexCount));this._vao.unbind()}if(s.showContour){var l=this._contourPickShader;l.bind(),l.uniforms=r;var u=this._contourVAO;for(u.bind(),o=0;o<3;++o)for(e.lineWidth(this.contourWidth[o]),l.uniforms.permutation=D[o],n=0;n<this.contourLevels[o].length;++n)this._contourCounts[o][n]&&(l.uniforms.height=this.contourLevels[o][n],u.draw(e.LINES,this._contourCounts[o][n],this._contourOffsets[o][n]));for(n=0;n<3;++n)for(l.uniforms.model=s.projections[n],l.uniforms.clipBounds=s.clipBounds[n],o=0;o<3;++o)if(this.contourProject[n][o]){l.uniforms.permutation=D[o],e.lineWidth(this.contourWidth[o]);for(var c=0;c<this.contourLevels[o].length;++c)this._contourCounts[o][c]&&(l.uniforms.height=this.contourLevels[o][c],u.draw(e.LINES,this._contourCounts[o][c],this._contourOffsets[o][c]))}u.unbind()}},F.pick=function(t){if(!t)return null;if(t.id!==this.pickId)return null;var e=this._field[2].shape,r=this._pickResult,n=e[0]*(t.value[0]+(t.value[2]>>4)/16)/255,i=Math.floor(n),o=n-i,a=e[1]*(t.value[1]+(15&t.value[2])/16)/255,s=Math.floor(a),l=a-s;i+=1,s+=1;var u=r.position;u[0]=u[1]=u[2]=0;for(var c=0;c<2;++c)for(var h=c?o:1-o,f=0;f<2;++f)for(var d=f?l:1-l,p=i+c,g=s+f,m=h*d,v=0;v<3;++v)u[v]+=this._field[v].get(p,g)*m;for(var y=this._pickResult.level,b=0;b<3;++b)if(y[b]=A.le(this.contourLevels[b],u[b]),y[b]<0)this.contourLevels[b].length>0&&(y[b]=0);else if(y[b]<this.contourLevels[b].length-1){var x=this.contourLevels[b][y[b]],_=this.contourLevels[b][y[b]+1];Math.abs(x-u[b])>Math.abs(_-u[b])&&(y[b]+=1)}for(r.index[0]=o<.5?i:i+1,r.index[1]=l<.5?s:s+1,r.uv[0]=n/e[0],r.uv[1]=a/e[1],v=0;v<3;++v)r.dataCoordinate[v]=this._field[v].get(r.index[0],r.index[1]);return r},F.update=function(t){t=t||{},this.dirty=!0,"contourWidth"in t&&(this.contourWidth=u(t.contourWidth,Number)),"showContour"in t&&(this.showContour=u(t.showContour,Boolean)),"showSurface"in t&&(this.showSurface=!!t.showSurface),"contourTint"in t&&(this.contourTint=u(t.contourTint,Boolean)),"contourColor"in t&&(this.contourColor=h(t.contourColor)),"contourProject"in t&&(this.contourProject=u(t.contourProject,function(t){return u(t,Boolean)})),"surfaceProject"in t&&(this.surfaceProject=t.surfaceProject),"dynamicColor"in t&&(this.dynamicColor=h(t.dynamicColor)),"dynamicTint"in t&&(this.dynamicTint=u(t.dynamicTint,Number)),"dynamicWidth"in t&&(this.dynamicWidth=u(t.dynamicWidth,Number)),"opacity"in t&&(this.opacity=t.opacity),"colorBounds"in t&&(this.colorBounds=t.colorBounds);var e=t.field||t.coords&&t.coords[2]||null,r=!1;if(e||(e=this._field[2].shape[0]||this._field[2].shape[2]?this._field[2].lo(1,1).hi(this._field[2].shape[0]-2,this._field[2].shape[1]-2):this._field[2].hi(0,0)),
++"field"in t||"coords"in t){var n=(e.shape[0]+2)*(e.shape[1]+2);n>this._field[2].data.length&&(v.freeFloat(this._field[2].data),this._field[2].data=v.mallocFloat(d.nextPow2(n))),this._field[2]=_(this._field[2].data,[e.shape[0]+2,e.shape[1]+2]),l(this._field[2],e),this.shape=e.shape.slice();for(var o=this.shape,a=0;a<2;++a)this._field[2].size>this._field[a].data.length&&(v.freeFloat(this._field[a].data),this._field[a].data=v.mallocFloat(this._field[2].size)),this._field[a]=_(this._field[a].data,[o[0]+2,o[1]+2]);if(t.coords){var s=t.coords;if(!Array.isArray(s)||3!==s.length)throw new Error("gl-surface: invalid coordinates for x/y");for(a=0;a<2;++a){var c=s[a];for(y=0;y<2;++y)if(c.shape[y]!==o[y])throw new Error("gl-surface: coords have incorrect shape");l(this._field[a],c)}}else if(t.ticks){var f=t.ticks;if(!Array.isArray(f)||2!==f.length)throw new Error("gl-surface: invalid ticks");for(a=0;a<2;++a){var p=f[a];if((Array.isArray(p)||p.length)&&(p=_(p)),p.shape[0]!==o[a])throw new Error("gl-surface: invalid tick length");var g=_(p.data,o);g.stride[a]=p.stride[0],g.stride[1^a]=0,l(this._field[a],g)}}else{for(a=0;a<2;++a){var m=[0,0];m[a]=1,this._field[a]=_(this._field[a].data,[o[0]+2,o[1]+2],m,0)}this._field[0].set(0,0,0);for(var y=0;y<o[0];++y)this._field[0].set(y+1,0,y);for(this._field[0].set(o[0]+1,0,o[0]-1),this._field[1].set(0,0,0),y=0;y<o[1];++y)this._field[1].set(0,y+1,y);this._field[1].set(0,o[1]+1,o[1]-1)}var b=this._field,x=_(v.mallocFloat(3*b[2].size*2),[3,o[0]+2,o[1]+2,2]);for(a=0;a<3;++a)T(x.pick(a),b[a],"mirror");var M=_(v.mallocFloat(3*b[2].size),[o[0]+2,o[1]+2,3]);for(a=0;a<o[0]+2;++a)for(y=0;y<o[1]+2;++y){var k=x.get(0,a,y,0),A=x.get(0,a,y,1),E=x.get(1,a,y,0),S=x.get(1,a,y,1),L=x.get(2,a,y,0),z=x.get(2,a,y,1),I=E*z-S*L,C=L*A-z*k,P=k*S-A*E,D=Math.sqrt(I*I+C*C+P*P);D<1e-8?(D=Math.max(Math.abs(I),Math.abs(C),Math.abs(P)),D<1e-8?(P=1,C=I=0,D=1):D=1/D):D=1/Math.sqrt(D),M.set(a,y,0,I*D),M.set(a,y,1,C*D),M.set(a,y,2,P*D)}v.free(x.data);var O=[1/0,1/0,1/0],F=[-(1/0),-(1/0),-(1/0)],j=1/0,N=-(1/0),B=(o[0]-1)*(o[1]-1)*6,U=v.mallocFloat(d.nextPow2(10*B)),V=0,q=0;for(a=0;a<o[0]-1;++a)t:for(y=0;y<o[1]-1;++y){for(var G=0;G<2;++G)for(var H=0;H<2;++H)for(var X=0;X<3;++X){var Y=this._field[X].get(1+a+G,1+y+H);if(isNaN(Y)||!isFinite(Y))continue t}for(X=0;X<6;++X){var W=a+R[X][0],Z=y+R[X][1],K=this._field[0].get(W+1,Z+1),J=this._field[1].get(W+1,Z+1);Y=this._field[2].get(W+1,Z+1);var $=Y;I=M.get(W+1,Z+1,0),C=M.get(W+1,Z+1,1),P=M.get(W+1,Z+1,2),t.intensity&&($=t.intensity.get(W,Z)),U[V++]=W,U[V++]=Z,U[V++]=K,U[V++]=J,U[V++]=Y,U[V++]=0,U[V++]=$,U[V++]=I,U[V++]=C,U[V++]=P,O[0]=Math.min(O[0],K),O[1]=Math.min(O[1],J),O[2]=Math.min(O[2],Y),j=Math.min(j,$),F[0]=Math.max(F[0],K),F[1]=Math.max(F[1],J),F[2]=Math.max(F[2],Y),N=Math.max(N,$),q+=1}}for(t.intensityBounds&&(j=+t.intensityBounds[0],N=+t.intensityBounds[1]),a=6;a<V;a+=10)U[a]=(U[a]-j)/(N-j);this._vertexCount=q,this._coordinateBuffer.update(U.subarray(0,V)),v.freeFloat(U),v.free(M.data),this.bounds=[O,F],this.intensity=t.intensity||this._field[2],this.intensityBounds[0]===j&&this.intensityBounds[1]===N||(r=!0),this.intensityBounds=[j,N]}if("levels"in t){var Q=t.levels;for(Q=Array.isArray(Q[0])?Q.slice():[[],[],Q],a=0;a<3;++a)Q[a]=Q[a].slice(),Q.sort(function(t,e){return t-e});t:for(a=0;a<3;++a){if(Q[a].length!==this.contourLevels[a].length){r=!0;break}for(y=0;y<Q[a].length;++y)if(Q[a][y]!==this.contourLevels[a][y]){r=!0;break t}}this.contourLevels=Q}if(r){b=this._field,o=this.shape;for(var tt=[],et=0;et<3;++et){Q=this.contourLevels[et];var rt=[],nt=[],it=[0,0,0];for(a=0;a<Q.length;++a){var ot=w(this._field[et],Q[a]);rt.push(tt.length/5|0),q=0;t:for(y=0;y<ot.cells.length;++y){var at=ot.cells[y];for(X=0;X<2;++X){var st=ot.positions[at[X]],lt=st[0],ut=0|Math.floor(lt),ct=lt-ut,ht=st[1],ft=0|Math.floor(ht),dt=ht-ft,pt=!1;e:for(var gt=0;gt<3;++gt){it[gt]=0;var mt=(et+gt+1)%3;for(G=0;G<2;++G){var vt=G?ct:1-ct;for(W=0|Math.min(Math.max(ut+G,0),o[0]),H=0;H<2;++H){var yt=H?dt:1-dt;if(Z=0|Math.min(Math.max(ft+H,0),o[1]),Y=gt<2?this._field[mt].get(W,Z):(this.intensity.get(W,Z)-this.intensityBounds[0])/(this.intensityBounds[1]-this.intensityBounds[0]),!isFinite(Y)||isNaN(Y)){pt=!0;break e}var bt=vt*yt;it[gt]+=bt*Y}}}if(pt){if(X>0){for(var xt=0;xt<5;++xt)tt.pop();q-=1}continue t}tt.push(it[0],it[1],st[0],st[1],it[2]),q+=1}}nt.push(q)}this._contourOffsets[et]=rt,this._contourCounts[et]=nt}var _t=v.mallocFloat(tt.length);for(a=0;a<tt.length;++a)_t[a]=tt[a];this._contourBuffer.update(_t),v.freeFloat(_t)}t.colormap&&this._colorMap.setPixels(i(t.colormap))},F.dispose=function(){this._shader.dispose(),this._vao.dispose(),this._coordinateBuffer.dispose(),this._colorMap.dispose(),this._contourBuffer.dispose(),this._contourVAO.dispose(),this._contourShader.dispose(),this._contourPickShader.dispose(),this._dynamicBuffer.dispose(),this._dynamicVAO.dispose();for(var t=0;t<3;++t)v.freeFloat(this._field[t].data)},F.highlight=function(t){if(!t)return this._dynamicCounts=[0,0,0],this.dyanamicLevel=[NaN,NaN,NaN],void(this.highlightLevel=[-1,-1,-1]);for(var e=0;e<3;++e)this.enableHighlight[e]?this.highlightLevel[e]=t.level[e]:this.highlightLevel[e]=-1;var r;if(r=this.snapToData?t.dataCoordinate:t.position,this.enableDynamic[0]&&r[0]!==this.dynamicLevel[0]||this.enableDynamic[1]&&r[1]!==this.dynamicLevel[1]||this.enableDynamic[2]&&r[2]!==this.dynamicLevel[2]){for(var n=0,i=this.shape,o=v.mallocFloat(12*i[0]*i[1]),a=0;a<3;++a)if(this.enableDynamic[a]){this.dynamicLevel[a]=r[a];var s=(a+1)%3,l=(a+2)%3,u=this._field[a],c=this._field[s],h=this._field[l],f=(this.intensity,w(u,r[a])),d=f.cells,p=f.positions;for(this._dynamicOffsets[a]=n,e=0;e<d.length;++e)for(var g=d[e],m=0;m<2;++m){var y=p[g[m]],b=+y[0],x=0|b,_=0|Math.min(x+1,i[0]),M=b-x,k=1-M,A=+y[1],T=0|A,E=0|Math.min(T+1,i[1]),S=A-T,L=1-S,z=k*L,I=k*S,C=M*L,P=M*S,R=z*c.get(x,T)+I*c.get(x,E)+C*c.get(_,T)+P*c.get(_,E),D=z*h.get(x,T)+I*h.get(x,E)+C*h.get(_,T)+P*h.get(_,E);if(isNaN(R)||isNaN(D)){m&&(n-=1);break}o[2*n+0]=R,o[2*n+1]=D,n+=1}this._dynamicCounts[a]=n-this._dynamicOffsets[a]}else this.dynamicLevel[a]=NaN,this._dynamicCounts[a]=0;this._dynamicBuffer.update(o.subarray(0,2*n)),v.freeFloat(o)}}},{"./lib/shaders":200,"binary-search-bounds":48,"bit-twiddle":49,colormap:75,"gl-buffer":121,"gl-mat4/invert":142,"gl-mat4/multiply":144,"gl-texture2d":202,"gl-vao":206,ndarray:385,"ndarray-gradient":376,"ndarray-ops":379,"ndarray-pack":380,"surface-nets":440,"typedarray-pool":449}],202:[function(t,e,r){"use strict";function n(t){m=[t.LINEAR,t.NEAREST_MIPMAP_LINEAR,t.LINEAR_MIPMAP_NEAREST,t.LINEAR_MIPMAP_NEAREST],v=[t.NEAREST,t.LINEAR,t.NEAREST_MIPMAP_NEAREST,t.NEAREST_MIPMAP_LINEAR,t.LINEAR_MIPMAP_NEAREST,t.LINEAR_MIPMAP_LINEAR],y=[t.REPEAT,t.CLAMP_TO_EDGE,t.MIRRORED_REPEAT]}function i(t,e,r){var n=t.gl,i=n.getParameter(n.MAX_TEXTURE_SIZE);if(e<0||e>i||r<0||r>i)throw new Error("gl-texture2d: Invalid texture size");return t._shape=[e,r],t.bind(),n.texImage2D(n.TEXTURE_2D,0,t.format,e,r,0,t.format,t.type,null),t._mipLevels=[0],t}function 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n=t("./literals");e.exports=n.slice().concat(["layout","centroid","smooth","case","mat2x2","mat2x3","mat2x4","mat3x2","mat3x3","mat3x4","mat4x2","mat4x3","mat4x4","uint","uvec2","uvec3","uvec4","samplerCubeShadow","sampler2DArray","sampler2DArrayShadow","isampler2D","isampler3D","isamplerCube","isampler2DArray","usampler2D","usampler3D","usamplerCube","usampler2DArray","coherent","restrict","readonly","writeonly","resource","atomic_uint","noperspective","patch","sample","subroutine","common","partition","active","filter","image1D","image2D","image3D","imageCube","iimage1D","iimage2D","iimage3D","iimageCube","uimage1D","uimage2D","uimage3D","uimageCube","image1DArray","image2DArray","iimage1DArray","iimage2DArray","uimage1DArray","uimage2DArray","image1DShadow","image2DShadow","image1DArrayShadow","image2DArrayShadow","imageBuffer","iimageBuffer","uimageBuffer","sampler1DArray","sampler1DArrayShadow","isampler1D","isampler1DArray","usampler1D","usampler1DArray","isampler2DRect","usampler2DRect","samplerBuffer","isamplerBuffer","usamplerBuffer","sampler2DMS","isampler2DMS","usampler2DMS","sampler2DMSArray","isampler2DMSArray","usampler2DMSArray"])},{"./literals":219}],219:[function(t,e,r){e.exports=["precision","highp","mediump","lowp","attribute","const","uniform","varying","break","continue","do","for","while","if","else","in","out","inout","float","int","void","bool","true","false","discard","return","mat2","mat3","mat4","vec2","vec3","vec4","ivec2","ivec3","ivec4","bvec2","bvec3","bvec4","sampler1D","sampler2D","sampler3D","samplerCube","sampler1DShadow","sampler2DShadow","struct","asm","class","union","enum","typedef","template","this","packed","goto","switch","default","inline","noinline","volatile","public","static","extern","external","interface","long","short","double","half","fixed","unsigned","input","output","hvec2","hvec3","hvec4","dvec2","dvec3","dvec4","fvec2","fvec3","fvec4","sampler2DRect","sampler3DRect","sampler2DRectShadow","sizeof","cast","namespace","using"]},{}],220:[function(t,e,r){e.exports=["<<=",">>=","++","--","<<",">>","<=",">=","==","!=","&&","||","+=","-=","*=","/=","%=","&=","^^","^=","|=","(",")","[","]",".","!","~","*","/","%","+","-","<",">","&","^","|","?",":","=",",",";","{","}"]},{}],221:[function(t,e,r){function n(t,e){var r=i(e),n=[];return n=n.concat(r(t)),n=n.concat(r(null))}var i=t("./index");e.exports=n},{"./index":215}],222:[function(t,e,r){"use strict";function n(t,e,r){var n=this.cells=[];if(t instanceof ArrayBuffer){this.arrayBuffer=t;var o=new Int32Array(this.arrayBuffer);t=o[0],e=o[1],r=o[2],this.d=e+2*r;for(var a=0;a<this.d*this.d;a++){var s=o[i+a],l=o[i+a+1];n.push(s===l?null:o.subarray(s,l))}var u=o[i+n.length],c=o[i+n.length+1];this.keys=o.subarray(u,c),this.bboxes=o.subarray(c),this.insert=this._insertReadonly}else{this.d=e+2*r;for(var h=0;h<this.d*this.d;h++)n.push([]);this.keys=[],this.bboxes=[]}this.n=e,this.extent=t,this.padding=r,this.scale=e/t,this.uid=0;var f=r/e*t;this.min=-f,this.max=t+f}e.exports=n;var i=3;n.prototype.insert=function(t,e,r,n,i){this._forEachCell(e,r,n,i,this._insertCell,this.uid++),this.keys.push(t),this.bboxes.push(e),this.bboxes.push(r),this.bboxes.push(n),this.bboxes.push(i)},n.prototype._insertReadonly=function(){throw"Cannot insert into a 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c(t.vertices,e.vertices)}function a(t){for(var e=["function orient(){var tuple=this.tuple;return test("],r=0;r<=t;++r)r>0&&e.push(","),e.push("tuple[",r,"]");e.push(")}return orient");var n=new Function("test",e.join("")),i=u[t+1];return i||(i=u),n(i)}function s(t,e,r){this.dimension=t,this.vertices=e,this.simplices=r,this.interior=r.filter(function(t){return!t.boundary}),this.tuple=new Array(t+1);for(var n=0;n<=t;++n)this.tuple[n]=this.vertices[n];var i=h[t];i||(i=h[t]=a(t)),this.orient=i}function l(t,e){var r=t.length;if(0===r)throw new Error("Must have at least d+1 points");var i=t[0].length;if(r<=i)throw new Error("Must input at least d+1 points");var o=t.slice(0,i+1),a=u.apply(void 0,o);if(0===a)throw new Error("Input not in general position");for(var l=new Array(i+1),c=0;c<=i;++c)l[c]=c;a<0&&(l[0]=1,l[1]=0);for(var h=new n(l,new Array(i+1),!1),f=h.adjacent,d=new Array(i+2),c=0;c<=i;++c){for(var p=l.slice(),g=0;g<=i;++g)g===c&&(p[g]=-1);var m=p[0];p[0]=p[1],p[1]=m;var v=new n(p,new Array(i+1),!0);f[c]=v,d[c]=v}d[i+1]=h;for(var c=0;c<=i;++c)for(var p=f[c].vertices,y=f[c].adjacent,g=0;g<=i;++g){var b=p[g];if(b<0)y[g]=h;else for(var x=0;x<=i;++x)f[x].vertices.indexOf(b)<0&&(y[g]=f[x])}for(var _=new s(i,o,d),w=!!e,c=i+1;c<r;++c)_.insert(t[c],w);return _.boundary()}e.exports=l;var u=t("robust-orientation"),c=t("simplicial-complex").compareCells;n.prototype.flip=function(){var t=this.vertices[0];this.vertices[0]=this.vertices[1],this.vertices[1]=t;var e=this.adjacent[0];this.adjacent[0]=this.adjacent[1],this.adjacent[1]=e};var h=[],f=s.prototype;f.handleBoundaryDegeneracy=function(t,e){var r=this.dimension,n=this.vertices.length-1,i=this.tuple,o=this.vertices,a=[t];for(t.lastVisited=-n;a.length>0;){t=a.pop();for(var s=(t.vertices,t.adjacent),l=0;l<=r;++l){var u=s[l];if(u.boundary&&!(u.lastVisited<=-n)){for(var c=u.vertices,h=0;h<=r;++h){var f=c[h];f<0?i[h]=e:i[h]=o[f]}var d=this.orient();if(d>0)return u;u.lastVisited=-n,0===d&&a.push(u)}}}return 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n=t("../error/validation_error"),i=t("./validate_enum"),o=t("../util/get_type"),a=t("../util/unbundle_jsonlint");e.exports=function t(e){var r,s=e.value,l=e.key,u=e.styleSpec,c=[];if("array"!==o(s))return[new n(l,s,"array expected, %s found",o(s))];if(s.length<1)return[new n(l,s,"filter array must have at least 1 element")];switch(c=c.concat(i({key:l+"[0]",value:s[0],valueSpec:u.filter_operator,style:e.style,styleSpec:e.styleSpec})),a(s[0])){case"<":case"<=":case">":case">=":s.length>=2&&"$type"==s[1]&&c.push(new n(l,s,'"$type" cannot be use with operator "%s"',s[0]));case"==":case"!=":3!=s.length&&c.push(new n(l,s,'filter array for operator "%s" must have 3 elements',s[0]));case"in":case"!in":s.length>=2&&(r=o(s[1]),"string"!==r?c.push(new n(l+"[1]",s[1],"string expected, %s found",r)):"@"===s[1][0]&&c.push(new n(l+"[1]",s[1],"filter key cannot be a constant")));for(var h=2;h<s.length;h++)r=o(s[h]),"$type"==s[1]?c=c.concat(i({key:l+"["+h+"]",value:s[h],valueSpec:u.geometry_type,style:e.style,styleSpec:e.styleSpec})):"string"===r&&"@"===s[h][0]?c.push(new n(l+"["+h+"]",s[h],"filter value cannot be a constant")):"string"!==r&&"number"!==r&&"boolean"!==r&&c.push(new n(l+"["+h+"]",s[h],"string, number, or boolean expected, %s found",r));break;case"any":case"all":case"none":for(h=1;h<s.length;h++)c=c.concat(t({key:l+"["+h+"]",value:s[h],style:e.style,styleSpec:e.styleSpec}));break;case"has":case"!has":r=o(s[1]),2!==s.length?c.push(new n(l,s,'filter array for "%s" operator must have 2 elements',s[0])):"string"!==r?c.push(new n(l+"[1]",s[1],"string expected, %s found",r)):"@"===s[1][0]&&c.push(new n(l+"[1]",s[1],"filter key cannot be a constant"))}return c}},{"../error/validation_error":235,"../util/get_type":237,"../util/unbundle_jsonlint":238,"./validate_enum":244}],246:[function(t,e,r){"use strict";var n=t("../error/validation_error"),i=t("../util/get_type"),o=t("./validate"),a=t("./validate_object"),s=t("./validate_array"),l=t("./validate_number");e.exports=function(t){function e(t){var e=[],o=t.value;return e=e.concat(s({key:t.key,value:o,valueSpec:t.valueSpec,style:t.style,styleSpec:t.styleSpec,arrayElementValidator:r})),"array"===i(o)&&0===o.length&&e.push(new n(t.key,o,"array must have at least one stop")),e}function r(t){var e=[],r=t.value,s=t.key;if("array"!==i(r))return[new n(s,r,"array expected, %s found",i(r))];if(2!==r.length)return[new n(s,r,"array length %d expected, length %d found",2,r.length)];var f=i(r[0]);if(c||(c=f),f!==c)return[new n(s,r,"%s stop key type must match previous stop key type %s",f,c)];if("object"===f){if(void 0===r[0].zoom)return[new n(s,r,"object stop key must have zoom")];if(void 0===r[0].value)return[new n(s,r,"object stop key must have value")];e=e.concat(a({key:s+"[0]",value:r[0],valueSpec:{zoom:{}},style:t.style,styleSpec:t.styleSpec,objectElementValidators:{zoom:l,value:u}}))}else e=e.concat((d?l:u)({key:s+"[0]",value:r[0],valueSpec:{},style:t.style,styleSpec:t.styleSpec}));return e=e.concat(o({key:s+"[1]",value:r[1],valueSpec:h,style:t.style,styleSpec:t.styleSpec})),"number"===i(r[0])&&("piecewise-constant"===h.function&&r[0]%1!==0&&e.push(new n(s+"[0]",r[0],"zoom level for piecewise-constant functions must be an integer")),0!==t.arrayIndex&&r[0]<t.array[t.arrayIndex-1][0]&&e.push(new n(s+"[0]",r[0],"array stops must appear in ascending order"))),e}function u(t){var e=[],r=i(t.value);return"number"!==r&&"string"!==r&&"array"!==r&&e.push(new n(t.key,t.value,"property value must be a number, string or array")),e}var c,h=t.valueSpec,f=void 0!==t.value.property||"object"===c,d=void 0===t.value.property||"object"===c,p=a({key:t.key,value:t.value,valueSpec:t.styleSpec.function,style:t.style,styleSpec:t.styleSpec,objectElementValidators:{stops:e}});return t.styleSpec.$version>=8&&(f&&!t.valueSpec["property-function"]?p.push(new n(t.key,t.value,"property functions not supported")):d&&!t.valueSpec["zoom-function"]&&p.push(new n(t.key,t.value,"zoom functions not supported"))),p}},{"../error/validation_error":235,"../util/get_type":237,"./validate":239,"./validate_array":240,"./validate_number":250,"./validate_object":251}],247:[function(t,e,r){"use strict";var n=t("../error/validation_error"),i=t("./validate_string");e.exports=function(t){var e=t.value,r=t.key,o=i(t);return o.length?o:(e.indexOf("{fontstack}")===-1&&o.push(new n(r,e,'"glyphs" url must include a "{fontstack}" token')),e.indexOf("{range}")===-1&&o.push(new n(r,e,'"glyphs" url must include a "{range}" token')),o)}},{"../error/validation_error":235,"./validate_string":254}],248:[function(t,e,r){"use strict";var n=t("../error/validation_error"),i=t("../util/unbundle_jsonlint"),o=t("./validate_object"),a=t("./validate_filter"),s=t("./validate_paint_property"),l=t("./validate_layout_property"),u=t("../util/extend");e.exports=function(t){var e=[],r=t.value,c=t.key,h=t.style,f=t.styleSpec;r.type||r.ref||e.push(new n(c,r,'either "type" or "ref" is required'));var d=i(r.type),p=i(r.ref);if(r.id)for(var g=0;g<t.arrayIndex;g++){var m=h.layers[g];i(m.id)===i(r.id)&&e.push(new n(c,r.id,'duplicate layer id "%s", previously used at line %d',r.id,m.id.__line__))}if("ref"in r){["type","source","source-layer","filter","layout"].forEach(function(t){t in r&&e.push(new n(c,r[t],'"%s" is prohibited for ref layers',t))});var v;h.layers.forEach(function(t){t.id==p&&(v=t)}),v?v.ref?e.push(new n(c,r.ref,"ref cannot reference another ref layer")):d=i(v.type):e.push(new n(c,r.ref,'ref layer "%s" not found',p))}else if("background"!==d)if(r.source){var y=h.sources&&h.sources[r.source];y?"vector"==y.type&&"raster"==d?e.push(new n(c,r.source,'layer "%s" requires a raster source',r.id)):"raster"==y.type&&"raster"!=d?e.push(new n(c,r.source,'layer "%s" requires a vector source',r.id)):"vector"!=y.type||r["source-layer"]||e.push(new n(c,r,'layer "%s" must specify a "source-layer"',r.id)):e.push(new n(c,r.source,'source "%s" not found',r.source))}else e.push(new n(c,r,'missing required property "source"'));return e=e.concat(o({key:c,value:r,valueSpec:f.layer,style:t.style,styleSpec:t.styleSpec,objectElementValidators:{filter:a,layout:function(t){return o({layer:r,key:t.key,value:t.value,style:t.style,styleSpec:t.styleSpec,objectElementValidators:{"*":function(t){return l(u({layerType:d},t))}}})},paint:function(t){return o({layer:r,key:t.key,value:t.value,style:t.style,styleSpec:t.styleSpec,objectElementValidators:{"*":function(t){return s(u({layerType:d},t))}}})}}}))}},{"../error/validation_error":235,"../util/extend":236,"../util/unbundle_jsonlint":238,"./validate_filter":245,"./validate_layout_property":249,"./validate_object":251,"./validate_paint_property":252}],249:[function(t,e,r){"use strict";var n=t("./validate"),i=t("../error/validation_error");e.exports=function(t){var e=t.key,r=t.style,o=t.styleSpec,a=t.value,s=t.objectKey,l=o["layout_"+t.layerType];if(!l)return[];if(t.valueSpec||l[s]){var u=[];return"symbol"===t.layerType&&("icon-image"===s&&r&&!r.sprite?u.push(new i(e,a,'use of "icon-image" requires a style "sprite" property')):"text-field"===s&&r&&!r.glyphs&&u.push(new i(e,a,'use of "text-field" requires a style "glyphs" property'))),u.concat(n({key:t.key,value:a,valueSpec:t.valueSpec||l[s],style:r,styleSpec:o}))}return[new i(e,a,'unknown property "%s"',s)]}},{"../error/validation_error":235,"./validate":239}],250:[function(t,e,r){"use strict";var n=t("../util/get_type"),i=t("../error/validation_error");e.exports=function(t){var e=t.key,r=t.value,o=t.valueSpec,a=n(r);return"number"!==a?[new i(e,r,"number expected, %s found",a)]:"minimum"in o&&r<o.minimum?[new i(e,r,"%s is less than the minimum value %s",r,o.minimum)]:"maximum"in o&&r>o.maximum?[new i(e,r,"%s is greater than the maximum value %s",r,o.maximum)]:[]}},{"../error/validation_error":235,"../util/get_type":237}],251:[function(t,e,r){"use strict";var n=t("../error/validation_error"),i=t("../util/get_type"),o=t("./validate");e.exports=function(t){var e=t.key,r=t.value,a=t.valueSpec,s=t.objectElementValidators||{},l=t.style,u=t.styleSpec,c=[],h=i(r);if("object"!==h)return[new n(e,r,"object expected, %s found",h)];for(var f in r){var d=f.split(".")[0],p=a&&(a[d]||a["*"]),g=s[d]||s["*"];p||g?c=c.concat((g||o)({key:(e?e+".":e)+f,value:r[f],valueSpec:p,style:l,styleSpec:u,object:r,objectKey:f})):""!==e&&1!==e.split(".").length&&c.push(new n(e,r[f],'unknown property "%s"',f))}for(d in a)a[d].required&&void 0===a[d].default&&void 0===r[d]&&c.push(new n(e,r,'missing required property "%s"',d));return c}},{"../error/validation_error":235,"../util/get_type":237,"./validate":239}],252:[function(t,e,r){"use strict";var n=t("./validate"),i=t("../error/validation_error");e.exports=function(t){var e=t.key,r=t.style,o=t.styleSpec,a=t.value,s=t.objectKey,l=o["paint_"+t.layerType];if(!l)return[];var u=s.match(/^(.*)-transition$/);return u&&l[u[1]]&&l[u[1]].transition?n({key:e,value:a,valueSpec:o.transition,style:r,styleSpec:o}):t.valueSpec||l[s]?n({key:t.key,value:a,valueSpec:t.valueSpec||l[s],style:r,styleSpec:o}):[new i(e,a,'unknown property "%s"',s)]}},{"../error/validation_error":235,"./validate":239}],253:[function(t,e,r){"use strict";var n=t("../error/validation_error"),i=t("../util/unbundle_jsonlint"),o=t("./validate_object"),a=t("./validate_enum");e.exports=function(t){var e=t.value,r=t.key,s=t.styleSpec,l=t.style;if(!e.type)return[new n(r,e,'"type" is required')];var u=i(e.type);switch(u){case"vector":case"raster":var c=[];if(c=c.concat(o({key:r,value:e,valueSpec:s.source_tile,style:t.style,styleSpec:s})),"url"in e)for(var h in e)["type","url","tileSize"].indexOf(h)<0&&c.push(new n(r+"."+h,e[h],'a source with a "url" property may not include a "%s" property',h));return c;case"geojson":return o({key:r,value:e,valueSpec:s.source_geojson,style:l,styleSpec:s});case"video":return o({key:r,value:e,valueSpec:s.source_video,style:l,styleSpec:s});case"image":return o({key:r,value:e,valueSpec:s.source_image,style:l,styleSpec:s});default:return a({key:r+".type",value:e.type,valueSpec:{values:["vector","raster","geojson","video","image"]},style:l,styleSpec:s})}}},{"../error/validation_error":235,"../util/unbundle_jsonlint":238,"./validate_enum":244,"./validate_object":251}],254:[function(t,e,r){"use strict";var n=t("../util/get_type"),i=t("../error/validation_error");e.exports=function(t){var e=t.value,r=t.key,o=n(e);return"string"!==o?[new i(r,e,"string expected, %s found",o)]:[]}},{"../error/validation_error":235,"../util/get_type":237}],255:[function(t,e,r){"use strict";function n(t,e){e=e||l;var r=[];return r=r.concat(s({key:"",value:t,valueSpec:e.$root,styleSpec:e,style:t,objectElementValidators:{glyphs:u}})),e.$version>7&&t.constants&&(r=r.concat(a({key:"constants",value:t.constants,style:t,styleSpec:e}))),i(r)}function i(t){return[].concat(t).sort(function(t,e){return t.line-e.line})}function o(t){return function(){return i(t.apply(this,arguments))}}var a=t("./validate/validate_constants"),s=t("./validate/validate"),l=t("../reference/latest.min"),u=t("./validate/validate_glyphs_url");n.source=o(t("./validate/validate_source")),n.layer=o(t("./validate/validate_layer")),n.filter=o(t("./validate/validate_filter")),n.paintProperty=o(t("./validate/validate_paint_property")),n.layoutProperty=o(t("./validate/validate_layout_property")),e.exports=n},{"../reference/latest.min":257,"./validate/validate":239,"./validate/validate_constants":243,"./validate/validate_filter":245,"./validate/validate_glyphs_url":247,"./validate/validate_layer":248,"./validate/validate_layout_property":249,"./validate/validate_paint_property":252,"./validate/validate_source":253}],256:[function(t,e,r){e.exports=t("./v8.json");
++},{"./v8.json":258}],257:[function(t,e,r){e.exports=t("./v8.min.json")},{"./v8.min.json":259}],258:[function(t,e,r){e.exports={$version:8,$root:{version:{required:!0,type:"enum",values:[8],doc:"Style specification version number. Must be 8.",example:8},name:{type:"string",doc:"A human-readable name for the style.",example:"Bright"},metadata:{type:"*",doc:"Arbitrary properties useful to track with the stylesheet, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."},center:{type:"array",value:"number",doc:"Default map center in longitude and latitude.  The style center will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:[-73.9749,40.7736]},zoom:{type:"number",doc:"Default zoom level.  The style zoom will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:12.5},bearing:{type:"number",default:0,period:360,units:"degrees",doc:"Default bearing, in degrees clockwise from true north.  The style bearing will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:29},pitch:{type:"number",default:0,units:"degrees",doc:"Default pitch, in degrees. Zero is perpendicular to the surface, for a look straight down at the map, while a greater value like 60 looks ahead towards the horizon. The style pitch will be used only if the map has not been positioned by other means (e.g. map options or user interaction).",example:50},sources:{required:!0,type:"sources",doc:"Data source specifications.",example:{"mapbox-streets":{type:"vector",url:"mapbox://mapbox.mapbox-streets-v6"}}},sprite:{type:"string",doc:"A base URL for retrieving the sprite image and metadata. The extensions `.png`, `.json` and scale factor `@2x.png` will be automatically appended. This property is required if any layer uses the 'sprite-image' layout property.",example:"mapbox://sprites/mapbox/bright-v8"},glyphs:{type:"string",doc:"A URL template for loading signed-distance-field glyph sets in PBF format. The URL must include `{fontstack}` and `{range}` tokens. This property is required if any layer uses the 'text-field' layout property.",example:"mapbox://fonts/mapbox/{fontstack}/{range}.pbf"},transition:{type:"transition",doc:"A global transition definition to use as a default across properties.",example:{duration:300,delay:0}},layers:{required:!0,type:"array",value:"layer",doc:"Layers will be drawn in the order of this array.",example:[{id:"water",source:"mapbox-streets","source-layer":"water",type:"fill",paint:{"fill-color":"#00ffff"}}]}},sources:{"*":{type:"source",doc:"Specification of a data source. For vector and raster sources, either TileJSON or a URL to a TileJSON must be provided. For GeoJSON and video sources, a URL must be provided."}},source:["source_tile","source_geojson","source_video","source_image"],source_tile:{type:{required:!0,type:"enum",values:["vector","raster"],doc:"The data type of the tile source."},url:{type:"string",doc:"A URL to a TileJSON resource. Supported protocols are `http:`, `https:`, and `mapbox://<mapid>`."},tiles:{type:"array",value:"string",doc:"An array of one or more tile source URLs, as in the TileJSON spec."},minzoom:{type:"number",default:0,doc:"Minimum zoom level for which tiles are available, as in the TileJSON spec."},maxzoom:{type:"number",default:22,doc:"Maximum zoom level for which tiles are available, as in the TileJSON spec. Data from tiles at the maxzoom are used when displaying the map at higher zoom levels."},tileSize:{type:"number",default:512,units:"pixels",doc:"The minimum visual size to display tiles for this layer. Only configurable for raster layers."},"*":{type:"*",doc:"Other keys to configure the data source."}},source_geojson:{type:{required:!0,type:"enum",values:["geojson"],doc:"The data type of the GeoJSON source."},data:{type:"*",doc:"A URL to a GeoJSON file, or inline GeoJSON."},maxzoom:{type:"number",default:18,doc:"Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels)."},buffer:{type:"number",default:128,doc:"Tile buffer size on each side (measured in 1/512ths of a tile; higher means fewer rendering artifacts near tile edges but slower performance)."},tolerance:{type:"number",default:.375,doc:"Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance)."},cluster:{type:"boolean",default:!1,doc:"If the data is a collection of point features, setting this to true clusters the points by radius into groups."},clusterRadius:{type:"number",default:50,doc:"Radius of each cluster when clustering points, measured in 1/512ths of a tile."},clusterMaxZoom:{type:"number",doc:"Max zoom to cluster points on. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered)."}},source_video:{type:{required:!0,type:"enum",values:["video"],doc:"The data type of the video source."},urls:{required:!0,type:"array",value:"string",doc:"URLs to video content in order of preferred format."},coordinates:{required:!0,doc:"Corners of video specified in longitude, latitude pairs.",type:"array",length:4,value:{type:"array",length:2,value:"number",doc:"A single longitude, latitude pair."}}},source_image:{type:{required:!0,type:"enum",values:["image"],doc:"The data type of the image source."},url:{required:!0,type:"string",doc:"URL that points to an image"},coordinates:{required:!0,doc:"Corners of image specified in longitude, latitude pairs.",type:"array",length:4,value:{type:"array",length:2,value:"number",doc:"A single longitude, latitude pair."}}},layer:{id:{type:"string",doc:"Unique layer name.",required:!0},type:{type:"enum",values:["fill","line","symbol","circle","raster","background"],doc:"Rendering type of this layer."},metadata:{type:"*",doc:"Arbitrary properties useful to track with the layer, but do not influence rendering. Properties should be prefixed to avoid collisions, like 'mapbox:'."},ref:{type:"string",doc:"References another layer to copy `type`, `source`, `source-layer`, `minzoom`, `maxzoom`, `filter`, and `layout` properties from. This allows the layers to share processing and be more efficient."},source:{type:"string",doc:"Name of a source description to be used for this layer."},"source-layer":{type:"string",doc:"Layer to use from a vector tile source. Required if the source supports multiple layers."},minzoom:{type:"number",minimum:0,maximum:22,doc:"The minimum zoom level on which the layer gets parsed and appears on."},maxzoom:{type:"number",minimum:0,maximum:22,doc:"The maximum zoom level on which the layer gets parsed and appears on."},interactive:{type:"boolean",doc:"Enable querying of feature data from this layer for interactivity.",default:!1},filter:{type:"filter",doc:"A expression specifying conditions on source features. Only features that match the filter are displayed."},layout:{type:"layout",doc:"Layout properties for the layer."},paint:{type:"paint",doc:"Default paint properties for this layer."},"paint.*":{type:"paint",doc:"Class-specific paint properties for this layer. The class name is the part after the first dot."}},layout:["layout_fill","layout_line","layout_circle","layout_symbol","layout_raster","layout_background"],layout_background:{visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},layout_fill:{visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},layout_circle:{visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},layout_line:{"line-cap":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["butt","round","square"],default:"butt",doc:"The display of line endings.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-join":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["bevel","round","miter"],default:"miter",doc:"The display of lines when joining.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-miter-limit":{type:"number",default:2,function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Used to automatically convert miter joins to bevel joins for sharp angles.",requires:[{"line-join":"miter"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-round-limit":{type:"number",default:1.05,function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Used to automatically convert round joins to miter joins for shallow angles.",requires:[{"line-join":"round"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},layout_symbol:{"symbol-placement":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["point","line"],default:"point",doc:"Label placement relative to its geometry. `line` can only be used on LineStrings and Polygons.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"symbol-spacing":{type:"number",default:250,minimum:1,function:"interpolated","zoom-function":!0,"property-function":!0,units:"pixels",doc:"Distance between two symbol anchors.",requires:[{"symbol-placement":"line"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"symbol-avoid-edges":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-allow-overlap":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, the icon will be visible even if it collides with other previously drawn symbols.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-ignore-placement":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, other symbols can be visible even if they collide with the icon.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-optional":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.",requires:["icon-image","text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-rotation-alignment":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],default:"viewport",doc:"Orientation of icon when map is rotated.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-size":{type:"number",default:1,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Scale factor for icon. 1 is original size, 3 triples the size.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-text-fit":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!1,values:["none","both","width","height"],default:"none",doc:"Position and scale an icon by the its corresponding text.",requires:["icon-image","text-field"],"sdk-support":{basic:{js:"0.21.0"}}},"icon-text-fit-padding":{type:"array",value:"number",length:4,default:[0,0,0,0],units:"pixels",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Size of padding area around the text-fit size in clockwise order: top, right, bottom, left.",requires:["icon-image","icon-text-fit","text-field"],"sdk-support":{basic:{js:"0.21.0"}}},"icon-image":{type:"string",function:"piecewise-constant","zoom-function":!0,"property-function":!0,doc:"A string with {tokens} replaced, referencing the data property to pull from.",tokens:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-rotate":{type:"number",default:0,period:360,function:"interpolated","zoom-function":!0,"property-function":!0,units:"degrees",doc:"Rotates the icon clockwise.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.21.0"}}},"icon-padding":{type:"number",default:2,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,units:"pixels",doc:"Size of the additional area around the icon bounding box used for detecting symbol collisions.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-keep-upright":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, the icon may be flipped to prevent it from being rendered upside-down.",requires:["icon-image",{"icon-rotation-alignment":"map"},{"symbol-placement":"line"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-offset":{type:"array",value:"number",length:2,default:[0,0],function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-pitch-alignment":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],doc:"Aligns text to the plane of the `viewport` or the `map` when the map is pitched. Matches `text-rotation-alignment` if unspecified.",requires:["text-field"],"sdk-support":{basic:{js:"0.21.0"}}},"text-rotation-alignment":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],default:"viewport",doc:"Orientation of text when map is rotated.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-field":{type:"string",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:"",tokens:!0,doc:"Value to use for a text label. Feature properties are specified using tokens like {field_name}.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-font":{type:"array",value:"string",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:["Open Sans Regular","Arial Unicode MS Regular"],doc:"Font stack to use for displaying text.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-size":{type:"number",default:16,minimum:0,units:"pixels",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Font size.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-max-width":{type:"number",default:10,minimum:0,units:"em",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"The maximum line width for text wrapping.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-line-height":{type:"number",default:1.2,units:"em",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Text leading value for multi-line text.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-letter-spacing":{type:"number",default:0,units:"em",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Text tracking amount.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-justify":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["left","center","right"],default:"center",doc:"Text justification options.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-anchor":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["center","left","right","top","bottom","top-left","top-right","bottom-left","bottom-right"],default:"center",doc:"Part of the text placed closest to the anchor.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-max-angle":{type:"number",default:45,units:"degrees",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Maximum angle change between adjacent characters.",requires:["text-field",{"symbol-placement":"line"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-rotate":{type:"number",default:0,period:360,units:"degrees",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Rotates the text clockwise.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-padding":{type:"number",default:2,minimum:0,units:"pixels",function:"interpolated","zoom-function":!0,"property-function":!0,doc:"Size of the additional area around the text bounding box used for detecting symbol collisions.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-keep-upright":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!0,doc:"If true, the text may be flipped vertically to prevent it from being rendered upside-down.",requires:["text-field",{"text-rotation-alignment":"map"},{"symbol-placement":"line"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-transform":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["none","uppercase","lowercase"],default:"none",doc:"Specifies how to capitalize text, similar to the CSS `text-transform` property.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-offset":{type:"array",doc:"Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up.",value:"number",units:"ems",function:"interpolated","zoom-function":!0,"property-function":!0,length:2,default:[0,0],requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-allow-overlap":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, the text will be visible even if it collides with other previously drawn symbols.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-ignore-placement":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, other symbols can be visible even if they collide with the text.",requires:["text-field"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"text-optional":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!1,doc:"If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not.",requires:["text-field","icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},layout_raster:{visibility:{type:"enum",function:"piecewise-constant","zoom-function":!0,values:["visible","none"],default:"visible",doc:"The display of this layer. `none` hides this layer.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},filter:{type:"array",value:"*",doc:"A filter selects specific features from a layer."},filter_operator:{type:"enum",values:["==","!=",">",">=","<","<=","in","!in","all","any","none","has","!has"],doc:"The filter operator."},geometry_type:{type:"enum",values:["Point","LineString","Polygon"],doc:"The geometry type for the filter to select."},color_operation:{type:"enum",values:["lighten","saturate","spin","fade","mix"],doc:"A color operation to apply."},function:{stops:{type:"array",required:!0,doc:"An array of stops.",value:"function_stop"},base:{type:"number",default:1,minimum:0,doc:"The exponential base of the interpolation curve. It controls the rate at which the result increases. Higher values make the result increase more towards the high end of the range. With `1` the stops are interpolated linearly."},property:{type:"string",doc:"The name of a global property or feature property to use as the function input.",default:"$zoom"},type:{type:"enum",values:["exponential","interval","categorical"],doc:"The interpolation strategy to use in function evaluation.",default:"exponential"}},function_stop:{type:"array",minimum:0,maximum:22,value:["number","color"],length:2,doc:"Zoom level and value pair."},paint:["paint_fill","paint_line","paint_circle","paint_symbol","paint_raster","paint_background"],paint_fill:{"fill-antialias":{type:"boolean",function:"piecewise-constant","zoom-function":!0,"property-function":!0,default:!0,doc:"Whether or not the fill should be antialiased.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"fill-opacity":{type:"number",function:"interpolated","zoom-function":!0,"property-function":!0,default:1,minimum:0,maximum:1,doc:"The opacity of the entire fill layer. In contrast to the fill-color, this value will also affect the 1px stroke around the fill, if the stroke is used.",transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.21.0"}}},"fill-color":{type:"color",default:"#000000",doc:"The color of the filled part of this layer. This color can be specified as rgba with an alpha component and the color's opacity will not affect the opacity of the 1px stroke, if it is used.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,requires:[{"!":"fill-pattern"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.19.0"}}},"fill-outline-color":{type:"color",doc:"The outline color of the fill. Matches the value of `fill-color` if unspecified.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,requires:[{"!":"fill-pattern"},{"fill-antialias":!0}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.19.0"}}},"fill-translate":{type:"array",value:"number",length:2,default:[0,0],function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"fill-translate-anchor":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen)",default:"map",requires:["fill-translate"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"fill-pattern":{type:"string",function:"piecewise-constant","zoom-function":!0,"property-function":!0,transition:!0,doc:"Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},paint_line:{"line-opacity":{type:"number",doc:"The opacity at which the line will be drawn.",function:"interpolated","zoom-function":!0,"property-function":!0,default:1,minimum:0,maximum:1,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-color":{type:"color",doc:"The color with which the line will be drawn.",default:"#000000",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,requires:[{"!":"line-pattern"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.23.0"}}},"line-translate":{type:"array",value:"number",length:2,default:[0,0],function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-translate-anchor":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen)",default:"map",requires:["line-translate"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-width":{type:"number",default:1,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Stroke thickness.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-gap-width":{type:"number",default:0,minimum:0,doc:"Draws a line casing outside of a line's actual path. Value indicates the width of the inner gap.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-offset":{type:"number",default:0,doc:"The line's offset. For linear features, a positive value offsets the line to the right, relative to the direction of the line, and a negative value to the left. For polygon features, a positive value results in an inset, and a negative value results in an outset.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels","sdk-support":{basic:{js:"0.12.1",ios:"3.1.0",android:"3.0.0"}}},"line-blur":{type:"number",default:0,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Blur applied to the line, in pixels.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-dasharray":{type:"array",value:"number",function:"piecewise-constant","zoom-function":!0,"property-function":!0,doc:"Specifies the lengths of the alternating dashes and gaps that form the dash pattern. The lengths are later scaled by the line width. To convert a dash length to pixels, multiply the length by the current line width.",minimum:0,transition:!0,units:"line widths",requires:[{"!":"line-pattern"}],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"line-pattern":{type:"string",function:"piecewise-constant","zoom-function":!0,"property-function":!0,transition:!0,doc:"Name of image in sprite to use for drawing image lines. For seamless patterns, image width must be a factor of two (2, 4, 8, ..., 512).","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}}},paint_circle:{"circle-radius":{type:"number",default:5,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Circle radius.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.18.0"}}},"circle-color":{type:"color",default:"#000000",doc:"The color of the circle.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.18.0"}}},"circle-blur":{type:"number",default:0,doc:"Amount to blur the circle. 1 blurs the circle such that only the centerpoint is full opacity.",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.20.0"}}},"circle-opacity":{type:"number",doc:"The opacity at which the circle will be drawn.",default:1,minimum:0,maximum:1,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"},"property-function":{js:"0.20.0"}}},"circle-translate":{type:"array",value:"number",length:2,default:[0,0],function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.","sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"circle-translate-anchor":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],doc:"Control whether the translation is relative to the map (north) or viewport (screen)",default:"map",requires:["circle-translate"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"circle-pitch-scale":{type:"enum",function:"piecewise-constant","zoom-function":!0,"property-function":!0,values:["map","viewport"],default:"map",doc:"Controls the scaling behavior of the circle when the map is pitched. The value `map` scales circles according to their apparent distance to the camera. The value `viewport` results in no pitch-related scaling.","sdk-support":{basic:{js:"0.21.0"}}}},paint_symbol:{"icon-opacity":{doc:"The opacity at which the icon will be drawn.",type:"number",default:1,minimum:0,maximum:1,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-color":{type:"color",default:"#000000",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,doc:"The color of the icon. This can only be used with sdf icons.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-halo-color":{type:"color",default:"rgba(0, 0, 0, 0)",function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,doc:"The color of the icon's halo. Icon halos can only be used with sdf icons.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-halo-width":{type:"number",default:0,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Distance of halo to the icon outline.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-halo-blur":{type:"number",default:0,minimum:0,function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Fade out the halo towards the outside.",requires:["icon-image"],"sdk-support":{basic:{js:"0.10.0",ios:"2.0.0",android:"2.0.1"}}},"icon-translate":{type:"array",value:"number",length:2,default:[0,0],function:"interpolated","zoom-function":!0,"property-function":!0,transition:!0,units:"pixels",doc:"Distance that the icon's anchor is moved from its original placement. 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e={};for(var r in t.programInterfaces){for(var n=e[r]={},i=0;i<t.childLayers.length;i++){var o=t.childLayers[i];n[o.id]={attributes:[],uniforms:[]}}var l=t.programInterfaces[r];if(l.paintAttributes)for(var u=0;u<l.paintAttributes.length;u++)for(var h=l.paintAttributes[u],f=0;f<t.childLayers.length;f++){var d=t.childLayers[f],p=n[d.id];if(d.isPaintValueFeatureConstant(h.paintProperty))p.uniforms.push(h);else if(d.isPaintValueZoomConstant(h.paintProperty))p.attributes.push(h);else{for(var g=d.getPaintValueStopZoomLevels(h.paintProperty),m=0;m<g.length&&g[m]<t.zoom;)m++;for(var v=Math.max(0,Math.min(g.length-4,m-2)),y=[],b=0;b<4;b++)y.push(g[Math.min(v+b,g.length-1)]);var x=h.components;if(1===x)p.attributes.push(c.extend({},h,{getValue:a(h,y),isFunction:!0,components:4*x}));else for(var _=0;_<4;_++)p.attributes.push(c.extend({},h,{getValue:a(h,[y[_]]),isFunction:!0,name:h.name+_}));p.uniforms.push(c.extend({},h,{name:"u_"+h.name.slice(2)+"_t",getValue:s(h,v),components:1}))}}}return e}function a(t,e){return function(r,n,i){if(1===e.length)return t.getValue(r,c.extend({},n,{zoom:e[0]}),i);for(var o=[],a=0;a<e.length;a++){var s=e[a];o.push(t.getValue(r,c.extend({},n,{zoom:s}),i)[0])}return o}}function s(t,e){return function(r,n){var i=r.getPaintInterpolationT(t.paintProperty,n.zoom);return[Math.max(0,Math.min(4,i-e))]}}var l=t("feature-filter"),u=t("./buffer"),c=t("../util/util"),h=t("../util/struct_array"),f=t("../render/vertex_array_object");e.exports=n,n.create=function(e){var r={fill:t("./bucket/fill_bucket"),line:t("./bucket/line_bucket"),circle:t("./bucket/circle_bucket"),symbol:t("./bucket/symbol_bucket")};return new r[e.layer.type](e)},n.EXTENT=8192,n.prototype.populateBuffers=function(){this.createArrays(),this.recalculateStyleLayers();for(var t=0;t<this.features.length;t++)this.addFeature(this.features[t]);this.trimArrays()},n.prototype.makeRoomFor=function(t,e){var r=this.arrayGroups[t],n=r.length&&r[r.length-1];if(!n||n.layout.vertex.length+e>65535){var i=this.arrayTypes[t],o=i.layout.vertex,a=i.layout.element,s=i.layout.element2;n={index:r.length,layout:{},paint:{}},n.layout.vertex=new o,a&&(n.layout.element=new a),s&&(n.layout.element2=new s);for(var l=0;l<this.childLayers.length;l++){var u=this.childLayers[l].id,c=i.paint[u];n.paint[u]=new c}r.push(n)}return n},n.prototype.createArrays=function(){this.arrayGroups={},this.arrayTypes={};for(var t in this.programInterfaces){var e=this.programInterfaces[t],r=this.arrayTypes[t]={layout:{},paint:{}};if(this.arrayGroups[t]=[],e.vertexBuffer){var n=new h({members:this.programInterfaces[t].layoutAttributes,alignment:u.VERTEX_ATTRIBUTE_ALIGNMENT});r.layout.vertex=n;var o=this.paintAttributes[t];for(var a in o){var s=new h({members:o[a].attributes,alignment:u.VERTEX_ATTRIBUTE_ALIGNMENT});r.paint[a]=s}}if(e.elementBuffer){var l=i(e.elementBufferComponents);r.layout.element=l}if(e.elementBuffer2){var c=i(e.elementBuffer2Components);r.layout.element2=c}}},n.prototype.destroy=function(t){for(var e in this.bufferGroups)for(var r=this.bufferGroups[e],n=0;n<r.length;n++){var i=r[n];for(var o in i.paint)i.paint[o].destroy(t);for(var a in i.layout)i.layout[a].destroy(t);for(var s in i.vaos)i.vaos[s].destroy(t);for(var l in i.secondVaos)i.secondVaos[l].destroy(t)}},n.prototype.trimArrays=function(){for(var t in this.arrayGroups){var e=this.arrayGroups[t];for(var r in e.paint)e.paint[r].trim();for(var n in e.layout)e.layout[n].trim()}},n.prototype.setUniforms=function(t,e,r,n,i){for(var o=this.paintAttributes[e][n.id].uniforms,a=0;a<o.length;a++){var s=o[a],l=r[s.name];t["uniform"+s.components+"fv"](l,s.getValue(n,i))}},n.prototype.serialize=function(){return{layerId:this.layer.id,zoom:this.zoom,arrays:c.mapObject(this.arrayGroups,function(t){return t.map(function(t){return c.mapObject(t,function(t){return c.mapObject(t,function(t){return t.serialize()})})})}),arrayTypes:c.mapObject(this.arrayTypes,function(t){return c.mapObject(t,function(t){return c.mapObject(t,function(t){return t.serialize()})})}),childLayerIds:this.childLayers.map(function(t){return t.id})}},n.prototype.createFilter=function(){this.filter||(this.filter=l(this.layer.filter))};var d={lastIntegerZoom:1/0,lastIntegerZoomTime:0,lastZoom:0};n.prototype.recalculateStyleLayers=function(){for(var t=0;t<this.childLayers.length;t++)this.childLayers[t].recalculate(this.zoom,d)},n.prototype.getProgramMacros=function(t,e){for(var r=[],n=this.paintAttributes[t][e.id].attributes,i=0;i<n.length;i++){var o=n[i];r.push("ATTRIBUTE_"+(o.isFunction?"ZOOM_FUNCTION_":"")+o.name.toUpperCase())}return r},n.prototype.addPaintAttributes=function(t,e,r,n,i){for(var o=0;o<this.childLayers.length;o++)for(var a=this.childLayers[o],s=this.arrayGroups[t],l=n.index;l<s.length;l++){var u=s[l],c=u.layout.vertex.length,h=u.paint[a.id];h.resize(c);for(var f=this.paintAttributes[t][a.id].attributes,d=0;d<f.length;d++)for(var p=f[d],g=p.getValue(a,e,r),m=p.multiplier||1,v=p.components||1,y=i;y<c;y++)for(var b=h.get(y),x=0;x<v;x++){var _=v>1?p.name+x:p.name;b[_]=g[x]*m}}}},{"../render/vertex_array_object":286,"../util/struct_array":360,"../util/util":362,"./bucket/circle_bucket":261,"./bucket/fill_bucket":262,"./bucket/line_bucket":263,"./bucket/symbol_bucket":264,"./buffer":265,"feature-filter":99}],261:[function(t,e,r){"use strict";function n(){i.apply(this,arguments)}var i=t("../bucket"),o=t("../../util/util"),a=t("../load_geometry"),s=i.EXTENT;e.exports=n,n.prototype=o.inherit(i,{}),n.prototype.addCircleVertex=function(t,e,r,n,i){return t.emplaceBack(2*e+(n+1)/2,2*r+(i+1)/2)},n.prototype.programInterfaces={circle:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"}],paintAttributes:[{name:"a_color",components:4,type:"Uint8",getValue:function(t,e,r){return o.premultiply(t.getPaintValue("circle-color",e,r))},multiplier:255,paintProperty:"circle-color"},{name:"a_radius",components:1,type:"Uint16",isLayerConstant:!1,getValue:function(t,e,r){return[t.getPaintValue("circle-radius",e,r)]},multiplier:10,paintProperty:"circle-radius"}]}},n.prototype.addFeature=function(t){for(var e={zoom:this.zoom},r=a(t),n=this.makeRoomFor("circle",0),i=n.layout.vertex.length,o=0;o<r.length;o++)for(var l=0;l<r[o].length;l++){var u=r[o][l].x,c=r[o][l].y;if(!(u<0||u>=s||c<0||c>=s)){var h=this.makeRoomFor("circle",4),f=h.layout.vertex,d=this.addCircleVertex(f,u,c,-1,-1);this.addCircleVertex(f,u,c,1,-1),this.addCircleVertex(f,u,c,1,1),this.addCircleVertex(f,u,c,-1,1),h.layout.element.emplaceBack(d,d+1,d+2),h.layout.element.emplaceBack(d,d+3,d+2)}}this.addPaintAttributes("circle",e,t.properties,n,i)}},{"../../util/util":362,"../bucket":260,"../load_geometry":267}],262:[function(t,e,r){"use strict";function n(){i.apply(this,arguments)}var i=t("../bucket"),o=t("../../util/util"),a=t("../load_geometry");e.exports=n,n.prototype=o.inherit(i,{}),n.prototype.programInterfaces={fill:{vertexBuffer:!0,elementBuffer:!0,elementBuffer2:!0,elementBuffer2Components:2,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"}]}},n.prototype.addFeature=function(t){for(var e=a(t),r=0;r<e.length;r++)this.addFill(e[r])},n.prototype.addFill=function(t){if(!(t.length<3))for(var e,r,n=t.length,i=this.makeRoomFor("fill",n+1),o=0;o<t.length;o++){var a=t[o],s=i.layout.vertex.emplaceBack(a.x,a.y);0===o&&(e=s),o>=2&&(a.x!==t[0].x||a.y!==t[0].y)&&i.layout.element.emplaceBack(e,r,s),o>=1&&i.layout.element2.emplaceBack(r,s),r=s}}},{"../../util/util":362,"../bucket":260,"../load_geometry":267}],263:[function(t,e,r){"use strict";function n(){i.apply(this,arguments)}var i=t("../bucket"),o=t("../../util/util"),a=t("../load_geometry"),s=i.EXTENT,l=63,u=Math.cos(37.5*(Math.PI/180)),c=15,h=14,f=.5,d=Math.pow(2,h)/f;e.exports=n,n.prototype=o.inherit(i,{}),n.prototype.addLineVertex=function(t,e,r,n,i,o,a){return t.emplaceBack(e.x<<1|n,e.y<<1|i,Math.round(l*r.x)+128,Math.round(l*r.y)+128,(0===o?0:o<0?-1:1)+1|(a*f&63)<<2,a*f>>6)},n.prototype.programInterfaces={line:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"},{name:"a_data",components:4,type:"Uint8"}]}},n.prototype.addFeature=function(t){for(var e=a(t),r=0;r<e.length;r++)this.addLine(e[r],this.layer.layout["line-join"],this.layer.layout["line-cap"],this.layer.layout["line-miter-limit"],this.layer.layout["line-round-limit"])},n.prototype.addLine=function(t,e,r,n,i){for(var o=t.length;o>2&&t[o-1].equals(t[o-2]);)o--;if(!(t.length<2)){"bevel"===e&&(n=1.05);var a=c*(s/(512*this.overscaling)),l=t[0],h=t[o-1],f=l.equals(h);if(this.makeRoomFor("line",10*o),2!==o||!f){this.distance=0;var d,p,g,m,v,y,b,x=r,_=f?"butt":r,w=!0;this.e1=this.e2=this.e3=-1,f&&(d=t[o-2],v=l.sub(d)._unit()._perp());for(var M=0;M<o;M++)if(g=f&&M===o-1?t[1]:t[M+1],
++!g||!t[M].equals(g)){v&&(m=v),d&&(p=d),d=t[M],v=g?g.sub(d)._unit()._perp():m,m=m||v;var k=m.add(v)._unit(),A=k.x*v.x+k.y*v.y,T=1/A,E=A<u&&p&&g;if(E&&M>0){var S=d.dist(p);if(S>2*a){var L=d.sub(d.sub(p)._mult(a/S)._round());this.distance+=L.dist(p),this.addCurrentVertex(L,this.distance,m.mult(1),0,0,!1),p=L}}var z=p&&g,I=z?e:g?x:_;if(z&&"round"===I&&(T<i?I="miter":T<=2&&(I="fakeround")),"miter"===I&&T>n&&(I="bevel"),"bevel"===I&&(T>2&&(I="flipbevel"),T<n&&(I="miter")),p&&(this.distance+=d.dist(p)),"miter"===I)k._mult(T),this.addCurrentVertex(d,this.distance,k,0,0,!1);else if("flipbevel"===I){if(T>100)k=v.clone();else{var C=m.x*v.y-m.y*v.x>0?-1:1,P=T*m.add(v).mag()/m.sub(v).mag();k._perp()._mult(P*C)}this.addCurrentVertex(d,this.distance,k,0,0,!1),this.addCurrentVertex(d,this.distance,k.mult(-1),0,0,!1)}else if("bevel"===I||"fakeround"===I){var R=m.x*v.y-m.y*v.x>0,D=-Math.sqrt(T*T-1);if(R?(b=0,y=D):(y=0,b=D),w||this.addCurrentVertex(d,this.distance,m,y,b,!1),"fakeround"===I){for(var O,F=Math.floor(8*(.5-(A-.5))),j=0;j<F;j++)O=v.mult((j+1)/(F+1))._add(m)._unit(),this.addPieSliceVertex(d,this.distance,O,R);this.addPieSliceVertex(d,this.distance,k,R);for(var N=F-1;N>=0;N--)O=m.mult((N+1)/(F+1))._add(v)._unit(),this.addPieSliceVertex(d,this.distance,O,R)}g&&this.addCurrentVertex(d,this.distance,v,-y,-b,!1)}else"butt"===I?(w||this.addCurrentVertex(d,this.distance,m,0,0,!1),g&&this.addCurrentVertex(d,this.distance,v,0,0,!1)):"square"===I?(w||(this.addCurrentVertex(d,this.distance,m,1,1,!1),this.e1=this.e2=-1),g&&this.addCurrentVertex(d,this.distance,v,-1,-1,!1)):"round"===I&&(w||(this.addCurrentVertex(d,this.distance,m,0,0,!1),this.addCurrentVertex(d,this.distance,m,1,1,!0),this.e1=this.e2=-1),g&&(this.addCurrentVertex(d,this.distance,v,-1,-1,!0),this.addCurrentVertex(d,this.distance,v,0,0,!1)));if(E&&M<o-1){var B=d.dist(g);if(B>2*a){var U=d.add(g.sub(d)._mult(a/B)._round());this.distance+=U.dist(d),this.addCurrentVertex(U,this.distance,v.mult(1),0,0,!1),d=U}}w=!1}}}},n.prototype.addCurrentVertex=function(t,e,r,n,i,o){var a,s=o?1:0,l=this.arrayGroups.line[this.arrayGroups.line.length-1].layout,u=l.vertex,c=l.element;a=r.clone(),n&&a._sub(r.perp()._mult(n)),this.e3=this.addLineVertex(u,t,a,s,0,n,e),this.e1>=0&&this.e2>=0&&c.emplaceBack(this.e1,this.e2,this.e3),this.e1=this.e2,this.e2=this.e3,a=r.mult(-1),i&&a._sub(r.perp()._mult(i)),this.e3=this.addLineVertex(u,t,a,s,1,-i,e),this.e1>=0&&this.e2>=0&&c.emplaceBack(this.e1,this.e2,this.e3),this.e1=this.e2,this.e2=this.e3,e>d/2&&(this.distance=0,this.addCurrentVertex(t,this.distance,r,n,i,o))},n.prototype.addPieSliceVertex=function(t,e,r,n){var i=n?1:0;r=r.mult(n?-1:1);var o=this.arrayGroups.line[this.arrayGroups.line.length-1].layout,a=o.vertex,s=o.element;this.e3=this.addLineVertex(a,t,r,0,i,0,e),this.e1>=0&&this.e2>=0&&s.emplaceBack(this.e1,this.e2,this.e3),n?this.e2=this.e3:this.e1=this.e3}},{"../../util/util":362,"../bucket":260,"../load_geometry":267}],264:[function(t,e,r){"use strict";function n(t){s.apply(this,arguments),this.showCollisionBoxes=t.showCollisionBoxes,this.overscaling=t.overscaling,this.collisionBoxArray=t.collisionBoxArray,this.sdfIcons=t.sdfIcons,this.iconsNeedLinear=t.iconsNeedLinear,this.adjustedTextSize=t.adjustedTextSize,this.adjustedIconSize=t.adjustedIconSize,this.fontstack=t.fontstack}function i(t,e,r,n,i,o,a,s,l,u){return t.emplaceBack(e,r,Math.round(64*n),Math.round(64*i),o/4,a/4,10*(u||0),0,10*(s||0),10*Math.min(l||25,25))}function o(t,e,r,n,i,o,a,s,l,u,c,h,f,d,p,g,m){this.x=t.x,this.y=t.y,this.index=a,this.hasText=!!r,this.hasIcon=!!n,this.hasText&&(this.glyphQuads=o?_(t,r,h,e,i,d):[],this.textCollisionFeature=new y(s,e,t,l,u,c,r,h,f,d,!1)),this.hasIcon&&(this.iconQuads=o?w(t,n,p,e,i,m):[],this.iconCollisionFeature=new y(s,e,t,l,u,c,n,p,g,m,!0))}var a=t("point-geometry"),s=t("../bucket"),l=t("../../symbol/anchor"),u=t("../../symbol/get_anchors"),c=t("../../util/token"),h=t("../../symbol/quads"),f=t("../../symbol/shaping"),d=t("../../symbol/resolve_text"),p=t("../../symbol/mergelines"),g=t("../../symbol/clip_line"),m=t("../../util/util"),v=t("../load_geometry"),y=t("../../symbol/collision_feature"),b=f.shapeText,x=f.shapeIcon,_=h.getGlyphQuads,w=h.getIconQuads,M=s.EXTENT;e.exports=n,n.prototype=m.inherit(s,{}),n.prototype.serialize=function(){var t=s.prototype.serialize.apply(this);return t.sdfIcons=this.sdfIcons,t.iconsNeedLinear=this.iconsNeedLinear,t.adjustedTextSize=this.adjustedTextSize,t.adjustedIconSize=this.adjustedIconSize,t.fontstack=this.fontstack,t};var k=[{name:"a_pos",components:2,type:"Int16"},{name:"a_offset",components:2,type:"Int16"},{name:"a_data1",components:4,type:"Uint8"},{name:"a_data2",components:2,type:"Uint8"}];n.prototype.addCollisionBoxVertex=function(t,e,r,n,i){return t.emplaceBack(e.x,e.y,Math.round(r.x),Math.round(r.y),10*n,10*i)},n.prototype.programInterfaces={glyph:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:k},icon:{vertexBuffer:!0,elementBuffer:!0,layoutAttributes:k},collisionBox:{vertexBuffer:!0,layoutAttributes:[{name:"a_pos",components:2,type:"Int16"},{name:"a_extrude",components:2,type:"Int16"},{name:"a_data",components:2,type:"Uint8"}]}},n.prototype.populateBuffers=function(t,e,r){var n={lastIntegerZoom:1/0,lastIntegerZoomTime:0,lastZoom:0};this.adjustedTextMaxSize=this.layer.getLayoutValue("text-size",{zoom:18,zoomHistory:n}),this.adjustedTextSize=this.layer.getLayoutValue("text-size",{zoom:this.zoom+1,zoomHistory:n}),this.adjustedIconMaxSize=this.layer.getLayoutValue("icon-size",{zoom:18,zoomHistory:n}),this.adjustedIconSize=this.layer.getLayoutValue("icon-size",{zoom:this.zoom+1,zoomHistory:n});var i=512*this.overscaling;this.tilePixelRatio=M/i,this.compareText={},this.symbolInstances=[],this.iconsNeedLinear=!1;var o=this.layer.layout,a=this.features,s=this.textFeatures,l=.5,u=.5;switch(o["text-anchor"]){case"right":case"top-right":case"bottom-right":l=1;break;case"left":case"top-left":case"bottom-left":l=0}switch(o["text-anchor"]){case"bottom":case"bottom-right":case"bottom-left":u=1;break;case"top":case"top-right":case"top-left":u=0}for(var h="right"===o["text-justify"]?1:"left"===o["text-justify"]?0:.5,f=24,d=o["text-line-height"]*f,g="line"!==o["symbol-placement"]?o["text-max-width"]*f:0,m=o["text-letter-spacing"]*f,y=[o["text-offset"][0]*f,o["text-offset"][1]*f],_=this.fontstack=o["text-font"].join(","),w=[],k=0;k<a.length;k++)w.push(v(a[k]));if("line"===o["symbol-placement"]){var A=p(a,s,w);w=A.geometries,a=A.features,s=A.textFeatures}for(var T,E,S=0;S<a.length;S++)if(w[S]){if(T=s[S]?b(s[S],e[_],g,d,l,u,h,m,y):null,o["icon-image"]){var L=c(a[S].properties,o["icon-image"]),z=r[L];E=x(z,o),z&&(void 0===this.sdfIcons?this.sdfIcons=z.sdf:this.sdfIcons!==z.sdf&&console.warn("Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer"),1!==z.pixelRatio&&(this.iconsNeedLinear=!0))}else E=null;(T||E)&&this.addFeature(w[S],T,E,a[S].index)}this.placeFeatures(t,this.showCollisionBoxes),this.trimArrays()},n.prototype.addFeature=function(t,e,r,n){var i=this.layer.layout,a=24,s=this.adjustedTextSize/a,c=void 0!==this.adjustedTextMaxSize?this.adjustedTextMaxSize:this.adjustedTextSize,h=this.tilePixelRatio*s,f=this.tilePixelRatio*c/a,d=this.tilePixelRatio*this.adjustedIconSize,p=this.tilePixelRatio*i["symbol-spacing"],m=i["symbol-avoid-edges"],v=i["text-padding"]*this.tilePixelRatio,y=i["icon-padding"]*this.tilePixelRatio,b=i["text-max-angle"]/180*Math.PI,x="map"===i["text-rotation-alignment"]&&"line"===i["symbol-placement"],_="map"===i["icon-rotation-alignment"]&&"line"===i["symbol-placement"],w=i["text-allow-overlap"]||i["icon-allow-overlap"]||i["text-ignore-placement"]||i["icon-ignore-placement"],k="line"===i["symbol-placement"],A=p/2;k&&(t=g(t,0,0,M,M));for(var T=0;T<t.length;T++){var E,S=t[T];E=k?u(S,p,b,e,r,a,f,this.overscaling,M):[new l(S[0].x,S[0].y,0)];for(var L=0,z=E.length;L<z;L++){var I=E[L];if(!(e&&k&&this.anchorIsTooClose(e.text,A,I))){var C=!(I.x<0||I.x>M||I.y<0||I.y>M);if(!m||C){var P=C||w;this.symbolInstances.push(new o(I,S,e,r,i,P,this.symbolInstances.length,this.collisionBoxArray,n,this.sourceLayerIndex,this.index,h,v,x,d,y,_))}}}}},n.prototype.anchorIsTooClose=function(t,e,r){var n=this.compareText;if(t in n){for(var i=n[t],o=i.length-1;o>=0;o--)if(r.dist(i[o])<e)return!0}else n[t]=[];return n[t].push(r),!1},n.prototype.placeFeatures=function(t,e){this.recalculateStyleLayers(),this.createArrays();var r=this.layer.layout,n=t.maxScale,i="map"===r["text-rotation-alignment"]&&"line"===r["symbol-placement"],o="map"===r["icon-rotation-alignment"]&&"line"===r["symbol-placement"],a=r["text-allow-overlap"]||r["icon-allow-overlap"]||r["text-ignore-placement"]||r["icon-ignore-placement"];if(a){var s=t.angle,l=Math.sin(s),u=Math.cos(s);this.symbolInstances.sort(function(t,e){var r=l*t.x+u*t.y|0,n=l*e.x+u*e.y|0;return r-n||e.index-t.index})}for(var c=0;c<this.symbolInstances.length;c++){var h=this.symbolInstances[c],f=h.hasText,d=h.hasIcon,p=r["text-optional"]||!f,g=r["icon-optional"]||!d,m=f?t.placeCollisionFeature(h.textCollisionFeature,r["text-allow-overlap"],r["symbol-avoid-edges"]):t.minScale,v=d?t.placeCollisionFeature(h.iconCollisionFeature,r["icon-allow-overlap"],r["symbol-avoid-edges"]):t.minScale;p||g?!g&&m?m=Math.max(v,m):!p&&v&&(v=Math.max(v,m)):v=m=Math.max(v,m),f&&(t.insertCollisionFeature(h.textCollisionFeature,m,r["text-ignore-placement"]),m<=n&&this.addSymbols("glyph",h.glyphQuads,m,r["text-keep-upright"],i,t.angle)),d&&(t.insertCollisionFeature(h.iconCollisionFeature,v,r["icon-ignore-placement"]),v<=n&&this.addSymbols("icon",h.iconQuads,v,r["icon-keep-upright"],o,t.angle))}e&&this.addToDebugBuffers(t)},n.prototype.addSymbols=function(t,e,r,n,o,a){for(var s=this.makeRoomFor(t,4*e.length),l=s.layout.element,u=s.layout.vertex,c=this.zoom,h=Math.max(Math.log(r)/Math.LN2+c,0),f=0;f<e.length;f++){var d=e[f],p=d.angle,g=(p+a+Math.PI)%(2*Math.PI);if(!(n&&o&&(g<=Math.PI/2||g>3*Math.PI/2))){var m=d.tl,v=d.tr,y=d.bl,b=d.br,x=d.tex,_=d.anchorPoint,w=Math.max(c+Math.log(d.minScale)/Math.LN2,h),M=Math.min(c+Math.log(d.maxScale)/Math.LN2,25);if(!(M<=w)){w===h&&(w=0);var k=i(u,_.x,_.y,m.x,m.y,x.x,x.y,w,M,h);i(u,_.x,_.y,v.x,v.y,x.x+x.w,x.y,w,M,h),i(u,_.x,_.y,y.x,y.y,x.x,x.y+x.h,w,M,h),i(u,_.x,_.y,b.x,b.y,x.x+x.w,x.y+x.h,w,M,h),l.emplaceBack(k,k+1,k+2),l.emplaceBack(k+1,k+2,k+3)}}}},n.prototype.updateIcons=function(t){this.recalculateStyleLayers();var e=this.layer.layout["icon-image"];if(e)for(var r=0;r<this.features.length;r++){var n=c(this.features[r].properties,e);n&&(t[n]=!0)}},n.prototype.updateFont=function(t){this.recalculateStyleLayers();var e=this.layer.layout["text-font"],r=t[e]=t[e]||{};this.textFeatures=d(this.features,this.layer.layout,r)},n.prototype.addToDebugBuffers=function(t){for(var e=this.makeRoomFor("collisionBox",0),r=e.layout.vertex,n=-t.angle,i=t.yStretch,o=0;o<this.symbolInstances.length;o++)for(var s=0;s<2;s++){var l=this.symbolInstances[o][0===s?"textCollisionFeature":"iconCollisionFeature"];if(l)for(var u=l.boxStartIndex;u<l.boxEndIndex;u++){var c=this.collisionBoxArray.get(u),h=c.anchorPoint,f=new a(c.x1,c.y1*i)._rotate(n),d=new a(c.x2,c.y1*i)._rotate(n),p=new a(c.x1,c.y2*i)._rotate(n),g=new a(c.x2,c.y2*i)._rotate(n),m=Math.max(0,Math.min(25,this.zoom+Math.log(c.maxScale)/Math.LN2)),v=Math.max(0,Math.min(25,this.zoom+Math.log(c.placementScale)/Math.LN2));this.addCollisionBoxVertex(r,h,f,m,v),this.addCollisionBoxVertex(r,h,d,m,v),this.addCollisionBoxVertex(r,h,d,m,v),this.addCollisionBoxVertex(r,h,g,m,v),this.addCollisionBoxVertex(r,h,g,m,v),this.addCollisionBoxVertex(r,h,p,m,v),this.addCollisionBoxVertex(r,h,p,m,v),this.addCollisionBoxVertex(r,h,f,m,v)}}}},{"../../symbol/anchor":316,"../../symbol/clip_line":318,"../../symbol/collision_feature":320,"../../symbol/get_anchors":322,"../../symbol/mergelines":325,"../../symbol/quads":326,"../../symbol/resolve_text":327,"../../symbol/shaping":328,"../../util/token":361,"../../util/util":362,"../bucket":260,"../load_geometry":267,"point-geometry":400}],265:[function(t,e,r){"use strict";function n(t,e,r){this.arrayBuffer=t.arrayBuffer,this.length=t.length,this.attributes=e.members,this.itemSize=e.bytesPerElement,this.type=r,this.arrayType=e}var i=t("assert");e.exports=n,n.prototype.bind=function(t){var e=t[this.type];this.buffer?t.bindBuffer(e,this.buffer):(this.buffer=t.createBuffer(),t.bindBuffer(e,this.buffer),t.bufferData(e,this.arrayBuffer,t.STATIC_DRAW),this.arrayBuffer=null)};var o={Int8:"BYTE",Uint8:"UNSIGNED_BYTE",Int16:"SHORT",Uint16:"UNSIGNED_SHORT"};n.prototype.setVertexAttribPointers=function(t,e){for(var r=0;r<this.attributes.length;r++){var n=this.attributes[r],a=e[n.name];i(void 0!==a,'array member "'+n.name+'" name does not match shader attribute name'),t.vertexAttribPointer(a,n.components,t[o[n.type]],!1,this.arrayType.bytesPerElement,n.offset)}},n.prototype.destroy=function(t){this.buffer&&t.deleteBuffer(this.buffer)},n.BufferType={VERTEX:"ARRAY_BUFFER",ELEMENT:"ELEMENT_ARRAY_BUFFER"},n.ELEMENT_ATTRIBUTE_TYPE="Uint16",n.VERTEX_ATTRIBUTE_ALIGNMENT=4},{assert:29}],266:[function(t,e,r){"use strict";function n(t,e,r){if(t.grid){var n=t,i=e;t=n.coord,e=n.overscaling,this.grid=new p(n.grid),this.featureIndexArray=new k(n.featureIndexArray),this.rawTileData=i,this.bucketLayerIDs=n.bucketLayerIDs}else this.grid=new p(h,16,0),this.featureIndexArray=new k;this.coord=t,this.overscaling=e,this.x=t.x,this.y=t.y,this.z=t.z-Math.log(e)/Math.LN2,this.setCollisionTile(r)}function i(t){return Math.sqrt(t[0]*t[0]+t[1]*t[1])}function o(t,e){return e-t}function a(t){return t["line-gap-width"]>0?t["line-gap-width"]+2*t["line-width"]:t["line-width"]}function s(t,e,r,n,i){if(!e[0]&&!e[1])return t;e=u.convert(e),"viewport"===r&&e._rotate(-n);for(var o=[],a=0;a<t.length;a++){for(var s=t[a],l=[],c=0;c<s.length;c++)l.push(s[c].sub(e._mult(i)));o.push(l)}return o}function l(t,e){for(var r=[],n=new u(0,0),i=0;i<t.length;i++){for(var o=t[i],a=[],s=0;s<o.length;s++){var l=o[s-1],c=o[s],h=o[s+1],f=0===s?n:c.sub(l)._unit()._perp(),d=s===o.length-1?n:h.sub(c)._unit()._perp(),p=f._add(d)._unit(),g=p.x*d.x+p.y*d.y;p._mult(1/g),a.push(p._mult(e)._add(c))}r.push(a)}return r}var u=t("point-geometry"),c=t("./load_geometry"),h=t("./bucket").EXTENT,f=t("feature-filter"),d=t("../util/struct_array"),p=t("grid-index"),g=t("../util/dictionary_coder"),m=t("vector-tile"),v=t("pbf"),y=t("../util/vectortile_to_geojson"),b=t("../util/util").arraysIntersect,x=t("../util/intersection_tests"),_=x.multiPolygonIntersectsBufferedMultiPoint,w=x.multiPolygonIntersectsMultiPolygon,M=x.multiPolygonIntersectsBufferedMultiLine,k=new d({members:[{type:"Uint32",name:"featureIndex"},{type:"Uint16",name:"sourceLayerIndex"},{type:"Uint16",name:"bucketIndex"}]});e.exports=n,n.prototype.insert=function(t,e,r,n){var i=this.featureIndexArray.length;this.featureIndexArray.emplaceBack(e,r,n);for(var o=c(t),a=0;a<o.length;a++){for(var s=o[a],l=[1/0,1/0,-(1/0),-(1/0)],u=0;u<s.length;u++){var h=s[u];l[0]=Math.min(l[0],h.x),l[1]=Math.min(l[1],h.y),l[2]=Math.max(l[2],h.x),l[3]=Math.max(l[3],h.y)}this.grid.insert(i,l[0],l[1],l[2],l[3])}},n.prototype.setCollisionTile=function(t){this.collisionTile=t},n.prototype.serialize=function(){var t={coord:this.coord,overscaling:this.overscaling,grid:this.grid.toArrayBuffer(),featureIndexArray:this.featureIndexArray.serialize(),bucketLayerIDs:this.bucketLayerIDs};return{data:t,transferables:[t.grid,t.featureIndexArray.arrayBuffer]}},n.prototype.query=function(t,e){this.vtLayers||(this.vtLayers=new m.VectorTile(new v(new Uint8Array(this.rawTileData))).layers,this.sourceLayerCoder=new g(this.vtLayers?Object.keys(this.vtLayers).sort():["_geojsonTileLayer"]));var r={},n=t.params||{},s=h/t.tileSize/t.scale,l=f(n.filter),c=0;for(var d in e){var p=e[d],y=p.paint,b=0;"line"===p.type?b=a(y)/2+Math.abs(y["line-offset"])+i(y["line-translate"]):"fill"===p.type?b=i(y["fill-translate"]):"circle"===p.type&&(b=y["circle-radius"]+i(y["circle-translate"])),c=Math.max(c,b*s)}for(var x=t.queryGeometry.map(function(t){return t.map(function(t){return new u(t.x,t.y)})}),_=1/0,w=1/0,M=-(1/0),k=-(1/0),A=0;A<x.length;A++)for(var T=x[A],E=0;E<T.length;E++){var S=T[E];_=Math.min(_,S.x),w=Math.min(w,S.y),M=Math.max(M,S.x),k=Math.max(k,S.y)}var L=this.grid.query(_-c,w-c,M+c,k+c);L.sort(o),this.filterMatching(r,L,this.featureIndexArray,x,l,n.layers,e,t.bearing,s);var z=this.collisionTile.queryRenderedSymbols(_,w,M,k,t.scale);return z.sort(),this.filterMatching(r,z,this.collisionTile.collisionBoxArray,x,l,n.layers,e,t.bearing,s),r},n.prototype.filterMatching=function(t,e,r,n,i,o,u,h,f){for(var d,p=0;p<e.length;p++){var g=e[p];if(g!==d){d=g;var m=r.get(g),v=this.bucketLayerIDs[m.bucketIndex];if(!o||b(o,v)){var x=this.sourceLayerCoder.decode(m.sourceLayerIndex),k=this.vtLayers[x],A=k.feature(m.featureIndex);if(i(A))for(var T=null,E=0;E<v.length;E++){var S=v[E];if(!(o&&o.indexOf(S)<0)){var L=u[S];if(L){var z;if("symbol"!==L.type){T||(T=c(A));var I=L.paint;if("line"===L.type){z=s(n,I["line-translate"],I["line-translate-anchor"],h,f);var C=a(I)/2*f;if(I["line-offset"]&&(T=l(T,I["line-offset"]*f)),!M(z,T,C))continue}else if("fill"===L.type){if(z=s(n,I["fill-translate"],I["fill-translate-anchor"],h,f),!w(z,T))continue}else if("circle"===L.type){z=s(n,I["circle-translate"],I["circle-translate-anchor"],h,f);var P=I["circle-radius"]*f;if(!_(z,T,P))continue}}var R=new y(A,this.z,this.x,this.y);R.layer=L.serialize({includeRefProperties:!0});var D=t[S];void 0===D&&(D=t[S]=[]),D.push(R)}}}}}}}},{"../util/dictionary_coder":353,"../util/intersection_tests":357,"../util/struct_array":360,"../util/util":362,"../util/vectortile_to_geojson":363,"./bucket":260,"./load_geometry":267,"feature-filter":99,"grid-index":222,pbf:394,"point-geometry":400,"vector-tile":456}],267:[function(t,e,r){"use strict";var n=t("./bucket").EXTENT,i=n*-2,o=2*n-1,a=!1;e.exports=function(t){for(var e=n/t.extent,r=t.loadGeometry(),s=0;s<r.length;s++)for(var l=r[s],u=0;u<l.length;u++){var c=l[u];c.x=Math.round(c.x*e),c.y=Math.round(c.y*e),a===!1&&(c.x<i||c.x>o||c.y<i||c.y>o)&&(console.warn("Geometry exceeds allowed extent, reduce your vector tile buffer size"),a=!0)}return r}},{"./bucket":260}],268:[function(t,e,r){"use strict";function n(t,e,r){this.column=t,this.row=e,this.zoom=r}e.exports=n,n.prototype={clone:function(){return new n(this.column,this.row,this.zoom)},zoomTo:function(t){return this.clone()._zoomTo(t)},sub:function(t){return this.clone()._sub(t)},_zoomTo:function(t){var e=Math.pow(2,t-this.zoom);return this.column*=e,this.row*=e,this.zoom=t,this},_sub:function(t){return t=t.zoomTo(this.zoom),this.column-=t.column,this.row-=t.row,this}}},{}],269:[function(t,e,r){"use strict";function n(t,e){if(isNaN(t)||isNaN(e))throw new Error("Invalid LngLat object: ("+t+", "+e+")");if(this.lng=+t,this.lat=+e,this.lat>90||this.lat<-90)throw new Error("Invalid LngLat latitude value: must be between -90 and 90")}e.exports=n;var i=t("../util/util").wrap;n.prototype.wrap=function(){return new n(i(this.lng,-180,180),this.lat)},n.prototype.toArray=function(){return[this.lng,this.lat]},n.prototype.toString=function(){return"LngLat("+this.lng+", "+this.lat+")"},n.convert=function(t){return t instanceof n?t:Array.isArray(t)?new n(t[0],t[1]):t}},{"../util/util":362}],270:[function(t,e,r){"use strict";function n(t,e){t&&(e?this.extend(t).extend(e):4===t.length?this.extend([t[0],t[1]]).extend([t[2],t[3]]):this.extend(t[0]).extend(t[1]))}e.exports=n;var i=t("./lng_lat");n.prototype={extend:function(t){var e,r,o=this._sw,a=this._ne;if(t instanceof i)e=t,r=t;else{if(!(t instanceof n))return t?this.extend(i.convert(t)||n.convert(t)):this;if(e=t._sw,r=t._ne,!e||!r)return this}return o||a?(o.lng=Math.min(e.lng,o.lng),o.lat=Math.min(e.lat,o.lat),a.lng=Math.max(r.lng,a.lng),a.lat=Math.max(r.lat,a.lat)):(this._sw=new i(e.lng,e.lat),this._ne=new i(r.lng,r.lat)),this},getCenter:function(){return new i((this._sw.lng+this._ne.lng)/2,(this._sw.lat+this._ne.lat)/2)},getSouthWest:function(){return this._sw},getNorthEast:function(){return this._ne},getNorthWest:function(){return new i(this.getWest(),this.getNorth())},getSouthEast:function(){return new i(this.getEast(),this.getSouth())},getWest:function(){return this._sw.lng},getSouth:function(){return this._sw.lat},getEast:function(){return this._ne.lng},getNorth:function(){return this._ne.lat},toArray:function(){return[this._sw.toArray(),this._ne.toArray()]},toString:function(){return"LngLatBounds("+this._sw.toString()+", "+this._ne.toString()+")"}},n.convert=function(t){return!t||t instanceof n?t:new n(t)}},{"./lng_lat":269}],271:[function(t,e,r){"use strict";function n(t,e){this.tileSize=512,this._minZoom=t||0,this._maxZoom=e||22,this.latRange=[-85.05113,85.05113],this.width=0,this.height=0,this._center=new i(0,0),this.zoom=0,this.angle=0,this._altitude=1.5,this._pitch=0,this._unmodified=!0}var i=t("./lng_lat"),o=t("point-geometry"),a=t("./coordinate"),s=t("../util/util").wrap,l=t("../util/interpolate"),u=t("../source/tile_coord"),c=t("../data/bucket").EXTENT,h=t("gl-matrix"),f=h.vec4,d=h.mat4,p=h.mat2;e.exports=n,n.prototype={get minZoom(){return this._minZoom},set minZoom(t){this._minZoom!==t&&(this._minZoom=t,this.zoom=Math.max(this.zoom,t))},get maxZoom(){return this._maxZoom},set maxZoom(t){this._maxZoom!==t&&(this._maxZoom=t,this.zoom=Math.min(this.zoom,t))},get worldSize(){return this.tileSize*this.scale},get centerPoint(){return this.size._div(2)},get size(){return new o(this.width,this.height)},get bearing(){return-this.angle/Math.PI*180},set bearing(t){var e=-s(t,-180,180)*Math.PI/180;this.angle!==e&&(this._unmodified=!1,this.angle=e,this._calcProjMatrix(),this.rotationMatrix=p.create(),p.rotate(this.rotationMatrix,this.rotationMatrix,this.angle))},get pitch(){return this._pitch/Math.PI*180},set pitch(t){var e=Math.min(60,t)/180*Math.PI;this._pitch!==e&&(this._unmodified=!1,this._pitch=e,this._calcProjMatrix())},get altitude(){return this._altitude},set altitude(t){var e=Math.max(.75,t);this._altitude!==e&&(this._unmodified=!1,this._altitude=e,this._calcProjMatrix())},get zoom(){return this._zoom},set zoom(t){var e=Math.min(Math.max(t,this.minZoom),this.maxZoom);this._zoom!==e&&(this._unmodified=!1,this._zoom=e,this.scale=this.zoomScale(e),this.tileZoom=Math.floor(e),this.zoomFraction=e-this.tileZoom,this._calcProjMatrix(),this._constrain())},get center(){return this._center},set center(t){t.lat===this._center.lat&&t.lng===this._center.lng||(this._unmodified=!1,this._center=t,this._calcProjMatrix(),this._constrain())},resize:function(t,e){this.width=t,this.height=e,this.pixelsToGLUnits=[2/t,-2/e],this._calcProjMatrix(),this._constrain()},get unmodified(){return this._unmodified},zoomScale:function(t){return Math.pow(2,t)},scaleZoom:function(t){return Math.log(t)/Math.LN2},project:function(t,e){return new o(this.lngX(t.lng,e),this.latY(t.lat,e))},unproject:function(t,e){return new i(this.xLng(t.x,e),this.yLat(t.y,e))},get x(){return this.lngX(this.center.lng)},get y(){return this.latY(this.center.lat)},get point(){return new o(this.x,this.y)},lngX:function(t,e){return(180+t)*(e||this.worldSize)/360},latY:function(t,e){var r=180/Math.PI*Math.log(Math.tan(Math.PI/4+t*Math.PI/360));return(180-r)*(e||this.worldSize)/360},xLng:function(t,e){return 360*t/(e||this.worldSize)-180},yLat:function(t,e){var r=180-360*t/(e||this.worldSize);return 360/Math.PI*Math.atan(Math.exp(r*Math.PI/180))-90},panBy:function(t){var e=this.centerPoint._add(t);this.center=this.pointLocation(e)},setLocationAtPoint:function(t,e){var r=this.locationCoordinate(t),n=this.pointCoordinate(e),i=this.pointCoordinate(this.centerPoint),o=n._sub(r);this._unmodified=!1,this.center=this.coordinateLocation(i._sub(o))},locationPoint:function(t){return this.coordinatePoint(this.locationCoordinate(t))},pointLocation:function(t){return this.coordinateLocation(this.pointCoordinate(t))},locationCoordinate:function(t){var e=this.zoomScale(this.tileZoom)/this.worldSize,r=i.convert(t);return new a(this.lngX(r.lng)*e,this.latY(r.lat)*e,this.tileZoom)},coordinateLocation:function(t){var e=this.zoomScale(t.zoom);return new i(this.xLng(t.column,e),this.yLat(t.row,e))},pointCoordinate:function(t){var e=0,r=this.coordinatePointMatrix(this.tileZoom);if(d.invert(r,r),!r)throw new Error("failed to invert matrix");var n=[t.x,t.y,0,1],i=[t.x,t.y,1,1];f.transformMat4(n,n,r),f.transformMat4(i,i,r);var o=n[3],s=i[3],u=n[0]/o,c=i[0]/s,h=n[1]/o,p=i[1]/s,g=n[2]/o,m=i[2]/s,v=g===m?0:(e-g)/(m-g);return new a(l(u,c,v),l(h,p,v),this.tileZoom)},coordinatePoint:function(t){var e=this.coordinatePointMatrix(t.zoom),r=[t.column,t.row,0,1];return f.transformMat4(r,r,e),new o(r[0]/r[3],r[1]/r[3])},coordinatePointMatrix:function(t){var e=d.copy(new Float64Array(16),this.projMatrix),r=this.worldSize/this.zoomScale(t);return d.scale(e,e,[r,r,1]),d.multiply(e,this.getPixelMatrix(),e),e},getPixelMatrix:function(){var t=d.create();return d.scale(t,t,[this.width/2,-this.height/2,1]),d.translate(t,t,[1,-1,0]),t},calculatePosMatrix:function(t,e){void 0===e&&(e=1/0),t instanceof u&&(t=t.toCoordinate(e));var r=Math.min(t.zoom,e),n=this.worldSize/Math.pow(2,r),i=new Float64Array(16);return d.identity(i),d.translate(i,i,[t.column*n,t.row*n,0]),d.scale(i,i,[n/c,n/c,1]),d.multiply(i,this.projMatrix,i),new Float32Array(i)},_constrain:function(){if(this.center&&this.width&&this.height&&!this._constraining){this._constraining=!0;var t,e,r,n,i,a,s,l,u=this.size,c=this._unmodified;this.latRange&&(t=this.latY(this.latRange[1]),e=this.latY(this.latRange[0]),i=e-t<u.y?u.y/(e-t):0),this.lngRange&&(r=this.lngX(this.lngRange[0]),n=this.lngX(this.lngRange[1]),a=n-r<u.x?u.x/(n-r):0);var h=Math.max(a||0,i||0);if(h)return this.center=this.unproject(new o(a?(n+r)/2:this.x,i?(e+t)/2:this.y)),this.zoom+=this.scaleZoom(h),this._unmodified=c,void(this._constraining=!1);if(this.latRange){var f=this.y,d=u.y/2;f-d<t&&(l=t+d),f+d>e&&(l=e-d)}if(this.lngRange){var p=this.x,g=u.x/2;p-g<r&&(s=r+g),p+g>n&&(s=n-g)}void 0===s&&void 0===l||(this.center=this.unproject(new o(void 0!==s?s:this.x,void 0!==l?l:this.y))),this._unmodified=c,this._constraining=!1}},_calcProjMatrix:function(){var t=new Float64Array(16),e=Math.atan(.5/this.altitude),r=Math.sin(e)*this.altitude/Math.sin(Math.PI/2-this._pitch-e),n=Math.cos(Math.PI/2-this._pitch)*r+this.altitude;d.perspective(t,2*Math.atan(this.height/2/this.altitude),this.width/this.height,.1,n),d.translate(t,t,[0,0,-this.altitude]),d.scale(t,t,[1,-1,1/this.height]),d.rotateX(t,t,this._pitch),d.rotateZ(t,t,this.angle),d.translate(t,t,[-this.x,-this.y,0]),this.projMatrix=t}}},{"../data/bucket":260,"../source/tile_coord":294,"../util/interpolate":356,"../util/util":362,"./coordinate":268,"./lng_lat":269,"gl-matrix":154,"point-geometry":400}],272:[function(t,e,r){"use strict";var n={" 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o,a,s,l,u,c,h,f,d=[];for(o=0,a=t.length;o<a;o++)if(u=n[t[o]]){for(f=null,s=0,l=u[1].length;s<l;s+=2)u[1][s]===-1&&u[1][s+1]===-1?f=null:(c=e+u[1][s]*i,h=r-u[1][s+1]*i,f&&d.push(f.x,f.y,c,h),f={x:c,y:h});e+=u[0]*i}return d}},{}],273:[function(t,e,r){"use strict";var n=e.exports={};n.Map=t("./ui/map"),n.Control=t("./ui/control/control"),n.Navigation=t("./ui/control/navigation"),n.Geolocate=t("./ui/control/geolocate"),n.Attribution=t("./ui/control/attribution"),n.Popup=t("./ui/popup"),n.GeoJSONSource=t("./source/geojson_source"),n.VideoSource=t("./source/video_source"),n.ImageSource=t("./source/image_source"),n.Style=t("./style/style"),n.LngLat=t("./geo/lng_lat"),n.LngLatBounds=t("./geo/lng_lat_bounds"),n.Point=t("point-geometry"),n.Evented=t("./util/evented"),n.util=t("./util/util"),n.supported=t("./util/browser").supported;var i=t("./util/ajax");n.util.getJSON=i.getJSON,n.util.getArrayBuffer=i.getArrayBuffer;var o=t("./util/config");n.config=o,Object.defineProperty(n,"accessToken",{get:function(){return o.ACCESS_TOKEN},set:function(t){o.ACCESS_TOKEN=t}})},{"./geo/lng_lat":269,"./geo/lng_lat_bounds":270,"./source/geojson_source":287,"./source/image_source":289,"./source/video_source":297,"./style/style":303,"./ui/control/attribution":331,"./ui/control/control":332,"./ui/control/geolocate":333,"./ui/control/navigation":334,"./ui/map":344,"./ui/popup":345,"./util/ajax":347,"./util/browser":348,"./util/config":352,"./util/evented":354,"./util/util":362,"point-geometry":400}],274:[function(t,e,r){"use strict";function n(t,e,r){var n,i=t.gl,l=t.transform,u=a.premultiply(r.paint["background-color"]),c=r.paint["background-pattern"],h=r.paint["background-opacity"],f=c?t.spriteAtlas.getPosition(c.from,!0):null,d=c?t.spriteAtlas.getPosition(c.to,!0):null;if(t.setDepthSublayer(0),f&&d){if(t.isOpaquePass)return;n=t.useProgram("pattern"),i.uniform1i(n.u_image,0),i.uniform2fv(n.u_pattern_tl_a,f.tl),i.uniform2fv(n.u_pattern_br_a,f.br),i.uniform2fv(n.u_pattern_tl_b,d.tl),i.uniform2fv(n.u_pattern_br_b,d.br),i.uniform1f(n.u_opacity,h),i.uniform1f(n.u_mix,c.t),t.spriteAtlas.bind(i,!0),t.tileExtentPatternVAO.bind(i,n,t.tileExtentBuffer)}else{if(t.isOpaquePass!==(1===u[3]))return;n=t.useProgram("fill"),i.uniform4fv(n.u_color,u),i.uniform1f(n.u_opacity,h),t.tileExtentVAO.bind(i,n,t.tileExtentBuffer)}i.disable(i.STENCIL_TEST);for(var p=o.coveringTiles(l),g=0;g<p.length;g++){var m=p[g],v=512;if(f&&d){var y=[f.size[0]*c.fromScale,f.size[1]*c.fromScale],b=[d.size[0]*c.toScale,d.size[1]*c.toScale],x={coord:m,tileSize:v};i.uniform2fv(n.u_patternscale_a,[1/s(x,y[0],t.transform.tileZoom),1/s(x,y[1],t.transform.tileZoom)]),i.uniform2fv(n.u_patternscale_b,[1/s(x,b[0],t.transform.tileZoom),1/s(x,b[1],t.transform.tileZoom)]);var _=v*Math.pow(2,t.transform.tileZoom-m.z),w=_/y[0]%1*(m.x+m.w*Math.pow(2,m.z)),M=_/y[1]%1*m.y,k=_/b[0]%1*(m.x+m.w*Math.pow(2,m.z)),A=_/b[1]%1*m.y;i.uniform2fv(n.u_offset_a,[w,M]),i.uniform2fv(n.u_offset_b,[k,A])}i.uniformMatrix4fv(n.u_matrix,!1,t.transform.calculatePosMatrix(m)),i.drawArrays(i.TRIANGLE_STRIP,0,t.tileExtentBuffer.length)}i.stencilMask(0),i.stencilFunc(i.EQUAL,128,128)}var i=t("../source/tile_pyramid"),o=new i({tileSize:512}),a=t("../util/util"),s=t("../source/pixels_to_tile_units");e.exports=n},{"../source/pixels_to_tile_units":290,"../source/tile_pyramid":295,"../util/util":362}],275:[function(t,e,r){"use strict";function n(t,e,r,n){if(!t.isOpaquePass){var o=t.gl;t.setDepthSublayer(0),t.depthMask(!1),o.disable(o.STENCIL_TEST);for(var a=0;a<n.length;a++){var s=n[a],l=e.getTile(s),u=l.getBucket(r);if(u){var c=u.bufferGroups.circle;if(c){var h=t.useProgram("circle",u.getProgramMacros("circle",r));o.uniform2fv(h.u_extrude_scale,t.transform.pixelsToGLUnits),o.uniform1f(h.u_blur,r.paint["circle-blur"]),o.uniform1f(h.u_devicepixelratio,i.devicePixelRatio),o.uniform1f(h.u_opacity,r.paint["circle-opacity"]),o.uniformMatrix4fv(h.u_matrix,!1,t.translatePosMatrix(s.posMatrix,l,r.paint["circle-translate"],r.paint["circle-translate-anchor"])),u.setUniforms(o,"circle",h,r,{zoom:t.transform.zoom});for(var f=0;f<c.length;f++){var d=c[f];d.vaos[r.id].bind(o,h,d.layout.vertex,d.layout.element,d.paint[r.id]),o.drawElements(o.TRIANGLES,3*d.layout.element.length,o.UNSIGNED_SHORT,0)}}}}}}var i=t("../util/browser");e.exports=n},{"../util/browser":348}],276:[function(t,e,r){"use strict";function n(t,e,r,n){var i=t.gl;i.enable(i.STENCIL_TEST);for(var o=t.useProgram("collisionbox"),a=0;a<n.length;a++){var s=n[a],l=e.getTile(s),u=l.getBucket(r);if(u){var c=u.bufferGroups.collisionBox;if(c&&c.length){var h=c[0];0!==h.layout.vertex.length&&(i.uniformMatrix4fv(o.u_matrix,!1,s.posMatrix),t.enableTileClippingMask(s),t.lineWidth(1),i.uniform1f(o.u_scale,Math.pow(2,t.transform.zoom-l.coord.z)),i.uniform1f(o.u_zoom,10*t.transform.zoom),i.uniform1f(o.u_maxzoom,10*(l.coord.z+1)),h.vaos[r.id].bind(i,o,h.layout.vertex),i.drawArrays(i.LINES,0,h.layout.vertex.length))}}}}e.exports=n},{}],277:[function(t,e,r){"use strict";function n(t,e,r){if(!t.isOpaquePass&&t.options.debug)for(var n=0;n<r.length;n++)i(t,e,r[n])}function i(t,e,r){var n=t.gl;n.disable(n.STENCIL_TEST),t.lineWidth(1*a.devicePixelRatio);var i=r.posMatrix,h=t.useProgram("debug");n.uniformMatrix4fv(h.u_matrix,!1,i),n.uniform4f(h.u_color,1,0,0,1),t.debugVAO.bind(n,h,t.debugBuffer),n.drawArrays(n.LINE_STRIP,0,t.debugBuffer.length);for(var f=o(r.toString(),50,200,5),d=new t.PosArray,p=0;p<f.length;p+=2)d.emplaceBack(f[p],f[p+1]);var g=new u(d.serialize(),t.PosArray.serialize(),u.BufferType.VERTEX),m=new c;m.bind(n,h,g),n.uniform4f(h.u_color,1,1,1,1);for(var v=e.getTile(r).tileSize,y=l/(Math.pow(2,t.transform.zoom-r.z)*v),b=[[-1,-1],[-1,1],[1,-1],[1,1]],x=0;x<b.length;x++){var _=b[x];n.uniformMatrix4fv(h.u_matrix,!1,s.translate([],i,[y*_[0],y*_[1],0])),n.drawArrays(n.LINES,0,g.length)}n.uniform4f(h.u_color,0,0,0,1),n.uniformMatrix4fv(h.u_matrix,!1,i),n.drawArrays(n.LINES,0,g.length)}var o=t("../lib/debugtext"),a=t("../util/browser"),s=t("gl-matrix").mat4,l=t("../data/bucket").EXTENT,u=t("../data/buffer"),c=t("./vertex_array_object");e.exports=n},{"../data/bucket":260,"../data/buffer":265,"../lib/debugtext":272,"../util/browser":348,"./vertex_array_object":286,"gl-matrix":154}],278:[function(t,e,r){"use strict";function n(t,e,r,n){var a=t.gl;a.enable(a.STENCIL_TEST);var l=s.premultiply(r.paint["fill-color"]),u=r.paint["fill-pattern"],c=s.premultiply(r.paint["fill-outline-color"]),h=r.paint["fill-opacity"];if(u?!t.isOpaquePass:t.isOpaquePass===(1===l[3]&&1===h))for(var f=0;f<n.length;f++)i(t,e,r,n[f]);if(!t.isOpaquePass&&r.paint["fill-antialias"])if(c||!r.paint["fill-pattern"]){var d=t.useProgram("outline");t.lineWidth(2),t.depthMask(!1),c?t.setDepthSublayer(2):t.setDepthSublayer(0),a.uniform2f(d.u_world,a.drawingBufferWidth,a.drawingBufferHeight),a.uniform4fv(d.u_color,c?c:l),a.uniform1f(d.u_opacity,h);for(var p=0;p<n.length;p++)o(t,e,r,n[p])}else{var g=t.useProgram("outlinepattern");t.lineWidth(2),t.depthMask(!1),t.setDepthSublayer(0),a.uniform2f(g.u_world,a.drawingBufferWidth,a.drawingBufferHeight);for(var m=0;m<n.length;m++)o(t,e,r,n[m])}}function i(t,e,r,n){var i=e.getTile(n),o=i.getBucket(r);if(o){var l=o.bufferGroups.fill;if(l){var u=t.gl,c=s.premultiply(r.paint["fill-color"]),h=r.paint["fill-pattern"],f=r.paint["fill-opacity"],d=n.posMatrix,p=t.translatePosMatrix(d,i,r.paint["fill-translate"],r.paint["fill-translate-anchor"]);t.setDepthSublayer(1),u.stencilMask(7),u.clear(u.STENCIL_BUFFER_BIT),t.enableTileClippingMask(n),u.stencilOpSeparate(u.FRONT,u.KEEP,u.KEEP,u.INCR_WRAP),u.stencilOpSeparate(u.BACK,u.KEEP,u.KEEP,u.DECR_WRAP),u.colorMask(!1,!1,!1,!1),t.depthMask(!1);var g=t.useProgram("fill");u.uniformMatrix4fv(g.u_matrix,!1,p);for(var m=0;m<l.length;m++){var v=l[m];v.vaos[r.id].bind(u,g,v.layout.vertex,v.layout.element),u.drawElements(u.TRIANGLES,3*v.layout.element.length,u.UNSIGNED_SHORT,0)}u.colorMask(!0,!0,!0,!0),t.depthMask(!0),u.stencilOp(u.KEEP,u.KEEP,u.KEEP),u.stencilMask(0);var y;h?(y=t.useProgram("pattern"),a(h,f,i,n,t,y),u.activeTexture(u.TEXTURE0),t.spriteAtlas.bind(u,!0),t.tileExtentPatternVAO.bind(u,y,t.tileExtentBuffer)):(y=t.useProgram("fill"),u.uniform4fv(g.u_color,c),u.uniform1f(g.u_opacity,f),t.tileExtentVAO.bind(u,y,t.tileExtentBuffer)),u.uniformMatrix4fv(y.u_matrix,!1,d),u.stencilFunc(u.NOTEQUAL,0,7),u.drawArrays(u.TRIANGLE_STRIP,0,t.tileExtentBuffer.length),u.stencilMask(0)}}}function o(t,e,r,n){var i=e.getTile(n),o=i.getBucket(r);if(o){var s=t.gl,l=o.bufferGroups.fill,u=r.paint["fill-pattern"],c=r.paint["fill-opacity"],h=u?t.useProgram("outlinepattern"):t.useProgram("outline");s.uniformMatrix4fv(h.u_matrix,!1,t.translatePosMatrix(n.posMatrix,i,r.paint["fill-translate"],r.paint["fill-translate-anchor"])),u&&a(u,c,i,n,t,h),t.enableTileClippingMask(n);for(var f=0;f<l.length;f++){var d=l[f];d.secondVaos[r.id].bind(s,h,d.layout.vertex,d.layout.element2),s.drawElements(s.LINES,2*d.layout.element2.length,s.UNSIGNED_SHORT,0)}}}function a(t,e,r,n,i,o){var a=i.gl,s=i.spriteAtlas.getPosition(t.from,!0),u=i.spriteAtlas.getPosition(t.to,!0);if(s&&u){a.uniform1i(o.u_image,0),a.uniform2fv(o.u_pattern_tl_a,s.tl),a.uniform2fv(o.u_pattern_br_a,s.br),a.uniform2fv(o.u_pattern_tl_b,u.tl),a.uniform2fv(o.u_pattern_br_b,u.br),a.uniform1f(o.u_opacity,e),a.uniform1f(o.u_mix,t.t);var c=[s.size[0]*t.fromScale,s.size[1]*t.fromScale],h=[u.size[0]*t.toScale,u.size[1]*t.toScale];a.uniform2fv(o.u_patternscale_a,[1/l(r,c[0],i.transform.tileZoom),1/l(r,c[1],i.transform.tileZoom)]),a.uniform2fv(o.u_patternscale_b,[1/l(r,h[0],i.transform.tileZoom),1/l(r,h[1],i.transform.tileZoom)]);var f=r.tileSize*Math.pow(2,i.transform.tileZoom-r.coord.z),d=f/c[0]%1*(r.coord.x+n.w*Math.pow(2,r.coord.z)),p=f/c[1]%1*r.coord.y,g=f/h[0]%1*(r.coord.x+n.w*Math.pow(2,r.coord.z)),m=f/h[1]%1*r.coord.y;a.uniform2fv(o.u_offset_a,[d,p]),a.uniform2fv(o.u_offset_b,[g,m]),a.activeTexture(a.TEXTURE0),i.spriteAtlas.bind(a,!0)}}var s=t("../util/util"),l=t("../source/pixels_to_tile_units");e.exports=n},{"../source/pixels_to_tile_units":290,"../util/util":362}],279:[function(t,e,r){"use strict";var n=t("../util/browser"),i=t("gl-matrix").mat2,o=t("../util/util"),a=t("../source/pixels_to_tile_units");e.exports=function(t,e,r,s){if(!t.isOpaquePass){t.setDepthSublayer(0),t.depthMask(!1);var l=t.gl;if(l.enable(l.STENCIL_TEST),!(r.paint["line-width"]<=0)){var u=1/n.devicePixelRatio,c=r.paint["line-blur"]+u,h=r.paint["line-width"]/2,f=-1,d=0,p=0;r.paint["line-gap-width"]>0&&(f=r.paint["line-gap-width"]/2+.5*u,h=r.paint["line-width"],d=f-u/2);var g=d+h+u/2+p,m=o.premultiply(r.paint["line-color"]),v=t.transform,y=i.create();i.scale(y,y,[1,Math.cos(v._pitch)]),i.rotate(y,y,t.transform.angle);var b,x,_,w,M,k=Math.sqrt(v.height*v.height/4*(1+v.altitude*v.altitude)),A=v.height/2*Math.tan(v._pitch),T=(k+A)/k-1,E=r.paint["line-dasharray"],S=r.paint["line-pattern"];if(E)b=t.useProgram("linesdfpattern"),l.uniform2fv(b.u_linewidth,[g,f]),l.uniform1f(b.u_blur,c),l.uniform4fv(b.u_color,m),l.uniform1f(b.u_opacity,r.paint["line-opacity"]),x=t.lineAtlas.getDash(E.from,"round"===r.layout["line-cap"]),_=t.lineAtlas.getDash(E.to,"round"===r.layout["line-cap"]),l.uniform1i(b.u_image,0),l.activeTexture(l.TEXTURE0),t.lineAtlas.bind(l),l.uniform1f(b.u_tex_y_a,x.y),l.uniform1f(b.u_tex_y_b,_.y),l.uniform1f(b.u_mix,E.t),l.uniform1f(b.u_extra,T),l.uniform1f(b.u_offset,-r.paint["line-offset"]),l.uniformMatrix2fv(b.u_antialiasingmatrix,!1,y);else if(S){if(w=t.spriteAtlas.getPosition(S.from,!0),M=t.spriteAtlas.getPosition(S.to,!0),!w||!M)return;b=t.useProgram("linepattern"),l.uniform1i(b.u_image,0),l.activeTexture(l.TEXTURE0),t.spriteAtlas.bind(l,!0),l.uniform2fv(b.u_linewidth,[g,f]),l.uniform1f(b.u_blur,c),l.uniform2fv(b.u_pattern_tl_a,w.tl),l.uniform2fv(b.u_pattern_br_a,w.br),l.uniform2fv(b.u_pattern_tl_b,M.tl),l.uniform2fv(b.u_pattern_br_b,M.br),l.uniform1f(b.u_fade,S.t),l.uniform1f(b.u_opacity,r.paint["line-opacity"]),l.uniform1f(b.u_extra,T),l.uniform1f(b.u_offset,-r.paint["line-offset"]),l.uniformMatrix2fv(b.u_antialiasingmatrix,!1,y)}else b=t.useProgram("line"),l.uniform2fv(b.u_linewidth,[g,f]),l.uniform1f(b.u_blur,c),l.uniform1f(b.u_extra,T),l.uniform1f(b.u_offset,-r.paint["line-offset"]),l.uniformMatrix2fv(b.u_antialiasingmatrix,!1,y),l.uniform4fv(b.u_color,m),l.uniform1f(b.u_opacity,r.paint["line-opacity"]);for(var L=0;L<s.length;L++){var z=s[L],I=e.getTile(z),C=I.getBucket(r);if(C){var P=C.bufferGroups.line;if(P){t.enableTileClippingMask(z);var R=t.translatePosMatrix(z.posMatrix,I,r.paint["line-translate"],r.paint["line-translate-anchor"]);l.uniformMatrix4fv(b.u_matrix,!1,R);var D=1/a(I,1,t.transform.zoom);if(E){var O=x.width*E.fromScale,F=_.width*E.toScale,j=[1/a(I,O,t.transform.tileZoom),-x.height/2],N=[1/a(I,F,t.transform.tileZoom),-_.height/2],B=t.lineAtlas.width/(256*Math.min(O,F)*n.devicePixelRatio)/2;l.uniform1f(b.u_ratio,D),l.uniform2fv(b.u_patternscale_a,j),l.uniform2fv(b.u_patternscale_b,N),l.uniform1f(b.u_sdfgamma,B)}else S?(l.uniform1f(b.u_ratio,D),l.uniform2fv(b.u_pattern_size_a,[a(I,w.size[0]*S.fromScale,t.transform.tileZoom),M.size[1]]),l.uniform2fv(b.u_pattern_size_b,[a(I,M.size[0]*S.toScale,t.transform.tileZoom),M.size[1]])):l.uniform1f(b.u_ratio,D);for(var U=0;U<P.length;U++){var V=P[U];V.vaos[r.id].bind(l,b,V.layout.vertex,V.layout.element),l.drawElements(l.TRIANGLES,3*V.layout.element.length,l.UNSIGNED_SHORT,0)}}}}}}}},{"../source/pixels_to_tile_units":290,"../util/browser":348,"../util/util":362,"gl-matrix":154}],280:[function(t,e,r){"use strict";function n(t,e,r,n){if(!t.isOpaquePass){var o=t.gl;o.enable(o.DEPTH_TEST),t.depthMask(!0),o.depthFunc(o.LESS);for(var a=n.length&&n[0].z,s=0;s<n.length;s++){var l=n[s];t.setDepthSublayer(l.z-a),i(t,e,r,l)}o.depthFunc(o.LEQUAL)}}function i(t,e,r,n){var i=t.gl;i.disable(i.STENCIL_TEST);var u=e.getTile(n),c=t.transform.calculatePosMatrix(n,e.maxzoom),h=t.useProgram("raster");i.uniformMatrix4fv(h.u_matrix,!1,c),i.uniform1f(h.u_brightness_low,r.paint["raster-brightness-min"]),i.uniform1f(h.u_brightness_high,r.paint["raster-brightness-max"]),i.uniform1f(h.u_saturation_factor,s(r.paint["raster-saturation"])),i.uniform1f(h.u_contrast_factor,a(r.paint["raster-contrast"])),i.uniform3fv(h.u_spin_weights,o(r.paint["raster-hue-rotate"]));var f,d,p=u.source&&u.source._pyramid.findLoadedParent(n,0,{}),g=l(u,p,r,t.transform);i.activeTexture(i.TEXTURE0),i.bindTexture(i.TEXTURE_2D,u.texture),p?(i.activeTexture(i.TEXTURE1),i.bindTexture(i.TEXTURE_2D,p.texture),f=Math.pow(2,p.coord.z-u.coord.z),d=[u.coord.x*f%1,u.coord.y*f%1]):g[1]=0,i.uniform2fv(h.u_tl_parent,d||[0,0]),i.uniform1f(h.u_scale_parent,f||1),i.uniform1f(h.u_buffer_scale,1),i.uniform1f(h.u_opacity0,g[0]),i.uniform1f(h.u_opacity1,g[1]),i.uniform1i(h.u_image0,0),i.uniform1i(h.u_image1,1);var m=u.boundsBuffer||t.rasterBoundsBuffer,v=u.boundsVAO||t.rasterBoundsVAO;v.bind(i,h,m),i.drawArrays(i.TRIANGLE_STRIP,0,m.length)}function o(t){t*=Math.PI/180;var e=Math.sin(t),r=Math.cos(t);return[(2*r+1)/3,(-Math.sqrt(3)*e-r+1)/3,(Math.sqrt(3)*e-r+1)/3]}function a(t){return t>0?1/(1-t):1+t}function s(t){return t>0?1-1/(1.001-t):-t}function l(t,e,r,n){var i=[1,0],o=r.paint["raster-fade-duration"];if(t.source&&o>0){var a=(new Date).getTime(),s=(a-t.timeAdded)/o,l=e?(a-e.timeAdded)/o:-1,c=t.source._pyramid.coveringZoomLevel(n),h=!!e&&Math.abs(e.coord.z-c)>Math.abs(t.coord.z-c);!e||h?(i[0]=u.clamp(s,0,1),i[1]=1-i[0]):(i[0]=u.clamp(1-l,0,1),i[1]=1-i[0])}var f=r.paint["raster-opacity"];return i[0]*=f,i[1]*=f,i}var u=t("../util/util"),c=t("../util/struct_array");e.exports=n,n.RasterBoundsArray=new c({members:[{name:"a_pos",type:"Int16",components:2},{name:"a_texture_pos",type:"Int16",components:2}]})},{"../util/struct_array":360,"../util/util":362}],281:[function(t,e,r){"use strict";function n(t,e,r,n){if(!t.isOpaquePass){var o=!(r.layout["text-allow-overlap"]||r.layout["icon-allow-overlap"]||r.layout["text-ignore-placement"]||r.layout["icon-ignore-placement"]),a=t.gl;o?a.disable(a.STENCIL_TEST):a.enable(a.STENCIL_TEST),t.setDepthSublayer(0),t.depthMask(!1),a.disable(a.DEPTH_TEST),i(t,e,r,n,!1,r.paint["icon-translate"],r.paint["icon-translate-anchor"],r.layout["icon-rotation-alignment"],r.layout["icon-size"],r.paint["icon-halo-width"],r.paint["icon-halo-color"],r.paint["icon-halo-blur"],r.paint["icon-opacity"],r.paint["icon-color"]),i(t,e,r,n,!0,r.paint["text-translate"],r.paint["text-translate-anchor"],r.layout["text-rotation-alignment"],r.layout["text-size"],r.paint["text-halo-width"],r.paint["text-halo-color"],r.paint["text-halo-blur"],r.paint["text-opacity"],r.paint["text-color"]),a.enable(a.DEPTH_TEST),s(t,e,r,n)}}function i(t,e,r,n,i,a,s,u,c,h,f,d,p,g){f=l.premultiply(f),g=l.premultiply(g);for(var m=0;m<n.length;m++){var v=e.getTile(n[m]),y=v.getBucket(r);if(y){var b=y.bufferGroups,x=i?b.glyph:b.icon;x.length&&(t.enableTileClippingMask(n[m]),o(t,r,n[m].posMatrix,v,y,x,i,i||y.sdfIcons,!i&&y.iconsNeedLinear,i?y.adjustedTextSize:y.adjustedIconSize,y.fontstack,a,s,u,c,h,f,d,p,g))}}}function o(t,e,r,n,i,o,s,l,c,h,f,d,p,g,m,v,y,b,x,_){var w,M,k,A=t.gl,T=t.transform,E="map"===g,S=s?24:1,L=m/S;E?(M=u(n,1,t.transform.zoom)*L,k=1/Math.cos(T._pitch),w=[M,M]):(M=t.transform.altitude*L,k=1,w=[T.pixelsToGLUnits[0]*M,T.pixelsToGLUnits[1]*M]);var z=Math.sqrt(T.height*T.height/4*(1+T.altitude*T.altitude)),I=T.height/2*Math.tan(T._pitch),C=(z+I)/z-1;if(s||t.style.sprite.loaded()){var P=t.useProgram(l?"sdf":"icon");if(A.uniformMatrix4fv(P.u_matrix,!1,t.translatePosMatrix(r,n,d,p)),A.uniform1i(P.u_skewed,E),A.uniform1f(P.u_extra,C),A.uniform2fv(P.u_extrude_scale,w),A.activeTexture(A.TEXTURE0),A.uniform1i(P.u_texture,0),s){var R=f&&t.glyphSource.getGlyphAtlas(f);if(!R)return;R.updateTexture(A),A.uniform2f(P.u_texsize,R.width/4,R.height/4)}else{var D=t.options.rotating||t.options.zooming,O=1!==L||a.devicePixelRatio!==t.spriteAtlas.pixelRatio||c,F=E||t.transform.pitch;t.spriteAtlas.bind(A,l||D||O||F),A.uniform2f(P.u_texsize,t.spriteAtlas.width/4,t.spriteAtlas.height/4)}var j=Math.log(m/h)/Math.LN2||0;A.uniform1f(P.u_zoom,10*(t.transform.zoom-j)),A.activeTexture(A.TEXTURE1),t.frameHistory.bind(A),A.uniform1i(P.u_fadetexture,1);var N;if(l){var B=8,U=1.19,V=6,q=.105*S/m/a.devicePixelRatio;if(v){A.uniform1f(P.u_gamma,(b*U/L/B+q)*k),A.uniform4fv(P.u_color,y),A.uniform1f(P.u_opacity,x),A.uniform1f(P.u_buffer,(V-v/L)/B);for(var G=0;G<o.length;G++)N=o[G],N.vaos[e.id].bind(A,P,N.layout.vertex,N.layout.element),A.drawElements(A.TRIANGLES,3*N.layout.element.length,A.UNSIGNED_SHORT,0)}A.uniform1f(P.u_gamma,q*k),A.uniform4fv(P.u_color,_),A.uniform1f(P.u_opacity,x),A.uniform1f(P.u_buffer,.75);for(var H=0;H<o.length;H++)N=o[H],N.vaos[e.id].bind(A,P,N.layout.vertex,N.layout.element),A.drawElements(A.TRIANGLES,3*N.layout.element.length,A.UNSIGNED_SHORT,0)}else{A.uniform1f(P.u_opacity,x);for(var X=0;X<o.length;X++)N=o[X],N.vaos[e.id].bind(A,P,N.layout.vertex,N.layout.element),A.drawElements(A.TRIANGLES,3*N.layout.element.length,A.UNSIGNED_SHORT,0)}}}var a=t("../util/browser"),s=t("./draw_collision_debug"),l=t("../util/util"),u=t("../source/pixels_to_tile_units");e.exports=n},{"../source/pixels_to_tile_units":290,"../util/browser":348,"../util/util":362,"./draw_collision_debug":276}],282:[function(t,e,r){"use strict";function n(){this.changeTimes=new Float64Array(256),this.changeOpacities=new Uint8Array(256),this.opacities=new Uint8ClampedArray(256),this.array=new Uint8Array(this.opacities.buffer),this.fadeDuration=300,this.previousZoom=0,this.firstFrame=!0}e.exports=n,n.prototype.record=function(t){var e=Date.now();this.firstFrame&&(e=0,this.firstFrame=!1),t=Math.floor(10*t);var r;if(t<this.previousZoom)for(r=t+1;r<=this.previousZoom;r++)this.changeTimes[r]=e,this.changeOpacities[r]=this.opacities[r];else for(r=t;r>this.previousZoom;r--)this.changeTimes[r]=e,this.changeOpacities[r]=this.opacities[r];for(r=0;r<256;r++){var n=e-this.changeTimes[r],i=n/this.fadeDuration*255;r<=t?this.opacities[r]=this.changeOpacities[r]+i:this.opacities[r]=this.changeOpacities[r]-i}this.changed=!0,this.previousZoom=t},n.prototype.bind=function(t){this.texture?(t.bindTexture(t.TEXTURE_2D,this.texture),this.changed&&(t.texSubImage2D(t.TEXTURE_2D,0,0,0,256,1,t.ALPHA,t.UNSIGNED_BYTE,this.array),this.changed=!1)):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.NEAREST),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.NEAREST),t.texImage2D(t.TEXTURE_2D,0,t.ALPHA,256,1,0,t.ALPHA,t.UNSIGNED_BYTE,this.array))}},{}],283:[function(t,e,r){"use strict";function n(t,e){this.width=t,this.height=e,this.nextRow=0,this.bytes=4,this.data=new Uint8Array(this.width*this.height*this.bytes),this.positions={}}e.exports=n,n.prototype.setSprite=function(t){this.sprite=t},n.prototype.getDash=function(t,e){var r=t.join(",")+e;return this.positions[r]||(this.positions[r]=this.addDash(t,e)),this.positions[r]},n.prototype.addDash=function(t,e){var r=e?7:0,n=2*r+1,i=128;if(this.nextRow+n>this.height)return console.warn("LineAtlas out of space"),null;for(var o=0,a=0;a<t.length;a++)o+=t[a];for(var s=this.width/o,l=s/2,u=t.length%2===1,c=-r;c<=r;c++)for(var h=this.nextRow+r+c,f=this.width*h,d=u?-t[t.length-1]:0,p=t[0],g=1,m=0;m<this.width;m++){for(;p<m/s;)d=p,p+=t[g],u&&g===t.length-1&&(p+=t[0]),g++;var v,y=Math.abs(m-d*s),b=Math.abs(m-p*s),x=Math.min(y,b),_=g%2===1;if(e){var w=r?c/r*(l+1):0;if(_){var M=l-Math.abs(w);v=Math.sqrt(x*x+M*M)}else v=l-Math.sqrt(x*x+w*w)}else v=(_?1:-1)*x;this.data[3+4*(f+m)]=Math.max(0,Math.min(255,v+i))}var k={y:(this.nextRow+r+.5)/this.height,height:2*r/this.height,width:o};return this.nextRow+=n,this.dirty=!0,k},n.prototype.bind=function(t){this.texture?(t.bindTexture(t.TEXTURE_2D,this.texture),this.dirty&&(this.dirty=!1,t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width,this.height,t.RGBA,t.UNSIGNED_BYTE,this.data))):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.REPEAT),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.REPEAT),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texImage2D(t.TEXTURE_2D,0,t.RGBA,this.width,this.height,0,t.RGBA,t.UNSIGNED_BYTE,this.data))}},{}],284:[function(t,e,r){"use strict";function n(t,e){this.gl=t,this.transform=e,this.reusableTextures={},this.preFbos={},this.frameHistory=new a,this.setup(),this.numSublayers=s.maxUnderzooming+s.maxOverzooming+1,this.depthEpsilon=1/Math.pow(2,16),this.lineWidthRange=t.getParameter(t.ALIASED_LINE_WIDTH_RANGE)}var i=t("../util/browser"),o=t("gl-matrix").mat4,a=t("./frame_history"),s=t("../source/tile_pyramid"),l=t("../data/bucket").EXTENT,u=t("../source/pixels_to_tile_units"),c=t("../util/util"),h=t("../util/struct_array"),f=t("../data/buffer"),d=t("./vertex_array_object"),p=t("./draw_raster").RasterBoundsArray;e.exports=n,c.extend(n.prototype,t("./painter/use_program")),n.prototype.resize=function(t,e){var r=this.gl;this.width=t*i.devicePixelRatio,this.height=e*i.devicePixelRatio,r.viewport(0,0,this.width,this.height)},n.prototype.setup=function(){var t=this.gl;t.verbose=!0,t.enable(t.BLEND),t.blendFunc(t.ONE,t.ONE_MINUS_SRC_ALPHA),t.enable(t.STENCIL_TEST),t.enable(t.DEPTH_TEST),t.depthFunc(t.LEQUAL),this._depthMask=!1,t.depthMask(!1);var e=this.PosArray=new h({members:[{name:"a_pos",type:"Int16",components:2}]}),r=new e;r.emplaceBack(0,0),r.emplaceBack(l,0),r.emplaceBack(0,l),r.emplaceBack(l,l),this.tileExtentBuffer=new f(r.serialize(),e.serialize(),f.BufferType.VERTEX),this.tileExtentVAO=new d,this.tileExtentPatternVAO=new d;var n=new e;n.emplaceBack(0,0),n.emplaceBack(l,0),n.emplaceBack(l,l),n.emplaceBack(0,l),n.emplaceBack(0,0),this.debugBuffer=new f(n.serialize(),e.serialize(),f.BufferType.VERTEX),this.debugVAO=new d;var i=new p;i.emplaceBack(0,0,0,0),i.emplaceBack(l,0,32767,0),i.emplaceBack(0,l,0,32767),i.emplaceBack(l,l,32767,32767),this.rasterBoundsBuffer=new f(i.serialize(),p.serialize(),f.BufferType.VERTEX),this.rasterBoundsVAO=new d},n.prototype.clearColor=function(){var t=this.gl;t.clearColor(0,0,0,0),t.clear(t.COLOR_BUFFER_BIT)},n.prototype.clearStencil=function(){var t=this.gl;t.clearStencil(0),t.stencilMask(255),t.clear(t.STENCIL_BUFFER_BIT)},n.prototype.clearDepth=function(){var t=this.gl;t.clearDepth(1),this.depthMask(!0),t.clear(t.DEPTH_BUFFER_BIT)},n.prototype._renderTileClippingMasks=function(t){var e=this.gl;e.colorMask(!1,!1,!1,!1),this.depthMask(!1),e.disable(e.DEPTH_TEST),e.enable(e.STENCIL_TEST),e.stencilMask(248),e.stencilOp(e.KEEP,e.KEEP,e.REPLACE);var r=1;this._tileClippingMaskIDs={};for(var n=0;n<t.length;n++){var i=t[n],o=this._tileClippingMaskIDs[i.id]=r++<<3;e.stencilFunc(e.ALWAYS,o,248);var a=this.useProgram("fill");e.uniformMatrix4fv(a.u_matrix,!1,i.posMatrix),this.tileExtentVAO.bind(e,a,this.tileExtentBuffer),e.drawArrays(e.TRIANGLE_STRIP,0,this.tileExtentBuffer.length)}e.stencilMask(0),e.colorMask(!0,!0,!0,!0),this.depthMask(!0),e.enable(e.DEPTH_TEST)},n.prototype.enableTileClippingMask=function(t){var e=this.gl;e.stencilFunc(e.EQUAL,this._tileClippingMaskIDs[t.id],248)},n.prototype.prepareBuffers=function(){},n.prototype.bindDefaultFramebuffer=function(){var t=this.gl;t.bindFramebuffer(t.FRAMEBUFFER,null)};var g={symbol:t("./draw_symbol"),circle:t("./draw_circle"),line:t("./draw_line"),fill:t("./draw_fill"),raster:t("./draw_raster"),background:t("./draw_background"),debug:t("./draw_debug")};n.prototype.render=function(t,e){this.style=t,this.options=e,this.lineAtlas=t.lineAtlas,this.spriteAtlas=t.spriteAtlas,this.spriteAtlas.setSprite(t.sprite),this.glyphSource=t.glyphSource,this.frameHistory.record(this.transform.zoom),this.prepareBuffers(),this.clearColor(),this.clearDepth(),this.showOverdrawInspector(e.showOverdrawInspector),this.depthRange=(t._order.length+2)*this.numSublayers*this.depthEpsilon,this.renderPass({isOpaquePass:!0}),this.renderPass({isOpaquePass:!1})},n.prototype.renderPass=function(t){var e=this.style._groups,r=t.isOpaquePass;this.currentLayer=r?this.style._order.length:-1;for(var n=0;n<e.length;n++){var i,o=e[r?e.length-1-n:n],a=this.style.sources[o.source],s=[];if(a){for(s=a.getVisibleCoordinates(),i=0;i<s.length;i++)s[i].posMatrix=this.transform.calculatePosMatrix(s[i],a.maxzoom);this.clearStencil(),a.prepare&&a.prepare(),a.isTileClipped&&this._renderTileClippingMasks(s)}for(r?(this._showOverdrawInspector||this.gl.disable(this.gl.BLEND),this.isOpaquePass=!0):(this.gl.enable(this.gl.BLEND),this.isOpaquePass=!1,s.reverse()),i=0;i<o.length;i++){var l=o[r?o.length-1-i:i];this.currentLayer+=r?-1:1,this.renderLayer(this,a,l,s)}a&&g.debug(this,a,s)}},n.prototype.depthMask=function(t){t!==this._depthMask&&(this._depthMask=t,this.gl.depthMask(t))},n.prototype.renderLayer=function(t,e,r,n){r.isHidden(this.transform.zoom)||("background"===r.type||n.length)&&(this.id=r.id,g[r.type](t,e,r,n))},n.prototype.setDepthSublayer=function(t){var e=1-((1+this.currentLayer)*this.numSublayers+t)*this.depthEpsilon,r=e-1+this.depthRange;this.gl.depthRange(r,e)},n.prototype.translatePosMatrix=function(t,e,r,n){if(!r[0]&&!r[1])return t;if("viewport"===n){var i=Math.sin(-this.transform.angle),a=Math.cos(-this.transform.angle);r=[r[0]*a-r[1]*i,r[0]*i+r[1]*a]}var s=[u(e,r[0],this.transform.zoom),u(e,r[1],this.transform.zoom),0],l=new Float32Array(16);return o.translate(l,t,s),l},n.prototype.saveTexture=function(t){var e=this.reusableTextures[t.size];e?e.push(t):this.reusableTextures[t.size]=[t]},n.prototype.getTexture=function(t){var e=this.reusableTextures[t];return e&&e.length>0?e.pop():null},n.prototype.lineWidth=function(t){this.gl.lineWidth(c.clamp(t,this.lineWidthRange[0],this.lineWidthRange[1]))},n.prototype.showOverdrawInspector=function(t){if(t||this._showOverdrawInspector){this._showOverdrawInspector=t;var e=this.gl;if(t){e.blendFunc(e.CONSTANT_COLOR,e.ONE);var r=8,n=1/r;e.blendColor(n,n,n,0),e.clearColor(0,0,0,1),e.clear(e.COLOR_BUFFER_BIT)}else e.blendFunc(e.ONE,e.ONE_MINUS_SRC_ALPHA)}}},{"../data/bucket":260,"../data/buffer":265,"../source/pixels_to_tile_units":290,"../source/tile_pyramid":295,"../util/browser":348,"../util/struct_array":360,"../util/util":362,"./draw_background":274,"./draw_circle":275,"./draw_debug":277,"./draw_fill":278,"./draw_line":279,"./draw_raster":280,"./draw_symbol":281,"./frame_history":282,"./painter/use_program":285,"./vertex_array_object":286,"gl-matrix":154}],285:[function(t,e,r){"use strict";var n=(t("path"),t("assert")),i=t("../../util/util"),o={debug:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\n\nvoid main() {\n    gl_FragColor = u_color;\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1);\n}\n"},fill:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvoid main() {\n    gl_FragColor = u_color * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n"},circle:{fragmentSource:"precision mediump float;\n\nuniform lowp float u_blur;\nuniform lowp float u_opacity;\n\nvarying lowp vec4 v_color;\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main() {\n    float t = smoothstep(1.0 - max(u_blur, v_antialiasblur), 1.0, length(v_extrude));\n    gl_FragColor = v_color * (1.0 - t) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_extrude_scale;\nuniform float u_devicepixelratio;\n\nattribute vec2 a_pos;\n\n#ifdef ATTRIBUTE_A_COLOR\nattribute lowp vec4 a_color;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\nuniform lowp float u_color_t;\nattribute lowp vec4 a_color0;\nattribute lowp vec4 a_color1;\nattribute lowp vec4 a_color2;\nattribute lowp vec4 a_color3;\n#else\nuniform lowp vec4 a_color;\n#endif\n\n#ifdef ATTRIBUTE_A_RADIUS\nattribute mediump float a_radius;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\nuniform lowp float u_radius_t;\nattribute mediump vec4 a_radius;\n#else\nuniform mediump float a_radius;\n#endif\n\nvarying vec2 v_extrude;\nvarying lowp vec4 v_color;\nvarying lowp float v_antialiasblur;\n\nfloat evaluate_zoom_function_1(const vec4 values, const float t) {\n    if (t < 1.0) {\n        return mix(values[0], values[1], t);\n    } else if (t < 2.0) {\n        return mix(values[1], values[2], t - 1.0);\n    } else {\n        return mix(values[2], values[3], t - 2.0);\n    }\n}\n\nvec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) {\n    if (t < 1.0) {\n        return mix(value0, value1, t);\n    } else if (t < 2.0) {\n        return mix(value1, value2, t - 1.0);\n    } else {\n        return mix(value2, value3, t - 2.0);\n    }\n}\n\nvoid main(void) {\n\n#ifdef ATTRIBUTE_A_RADIUS\n    mediump float radius = a_radius / 10.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_RADIUS\n    mediump float radius = evaluate_zoom_function_1(a_radius, u_radius_t) / 10.0;\n#else\n    mediump float radius = a_radius;\n#endif\n\n    // unencode the extrusion vector that we snuck into the a_pos vector\n    v_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);\n\n    vec2 extrude = v_extrude * radius * u_extrude_scale;\n    // multiply a_pos by 0.5, since we had it * 2 in order to sneak\n    // in extrusion data\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1);\n\n    // gl_Position is divided by gl_Position.w after this shader runs.\n    // Multiply the extrude by it so that it isn't affected by it.\n    gl_Position.xy += extrude * gl_Position.w;\n\n#ifdef ATTRIBUTE_A_COLOR\n    v_color = a_color / 255.0;\n#elif defined ATTRIBUTE_ZOOM_FUNCTION_A_COLOR0\n    v_color = evaluate_zoom_function_4(a_color0, a_color1, a_color2, a_color3, u_color_t) / 255.0;\n#else\n    v_color = a_color;\n#endif\n\n    // This is a minimum blur distance that serves as a faux-antialiasing for\n    // the circle. since blur is a ratio of the circle's size and the intent is\n    // to keep the blur at roughly 1px, the two are inversely related.\n    v_antialiasblur = 1.0 / u_devicepixelratio / radius;\n}\n"
++},line:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"},linepattern:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform float u_point;\nuniform float u_blur;\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_fade;\nuniform float u_opacity;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0);\n    float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0);\n    float y_a = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_a.y);\n    float y_b = 0.5 + (v_normal.y * u_linewidth.s / u_pattern_size_b.y);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, vec2(x_a, y_a));\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, vec2(x_b, y_b));\n\n    vec4 color = mix(texture2D(u_image, pos), texture2D(u_image, pos2), u_fade);\n\n    alpha *= u_opacity;\n\n    gl_FragColor = color * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump vec2 u_linewidth;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 extrude = a_extrude * scale;\n    mediump vec2 dist = u_linewidth.s * extrude;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n    v_linesofar = a_linesofar;\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"},linesdfpattern:{fragmentSource:"precision mediump float;\n\nuniform vec2 u_linewidth;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\nuniform sampler2D u_image;\nuniform float u_sdfgamma;\nuniform float u_mix;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * u_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (u_linewidth.t - blur), u_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float sdfdist_a = texture2D(u_image, v_tex_a).a;\n    float sdfdist_b = texture2D(u_image, v_tex_b).a;\n    float sdfdist = mix(sdfdist_a, sdfdist_b, u_mix);\n    alpha *= smoothstep(0.5 - u_sdfgamma, 0.5 + u_sdfgamma, sdfdist);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump vec2 u_linewidth;\nuniform mediump float u_ratio;\nuniform vec2 u_patternscale_a;\nuniform float u_tex_y_a;\nuniform vec2 u_patternscale_b;\nuniform float u_tex_y_b;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec4 dist = vec4(u_linewidth.s * a_extrude * scale, 0.0, 0.0);\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist.xy) / u_ratio, 0.0, 1.0);\n\n    v_tex_a = vec2(a_linesofar * u_patternscale_a.x, normal.y * u_patternscale_a.y + u_tex_y_a);\n    v_tex_b = vec2(a_linesofar * u_patternscale_b.x, normal.y * u_patternscale_b.y + u_tex_y_b);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"},outline:{fragmentSource:"precision mediump float;\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"},outlinepattern:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    // find distance to outline for alpha interpolation\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    \n\n    gl_FragColor = mix(color1, color2, u_mix) * alpha * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"},pattern:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    gl_FragColor = mix(color1, color2, u_mix) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_patternscale_a;\nuniform vec2 u_patternscale_b;\nuniform vec2 u_offset_a;\nuniform vec2 u_offset_b;\n\nattribute vec2 a_pos;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos_a = u_patternscale_a * a_pos + u_offset_a;\n    v_pos_b = u_patternscale_b * a_pos + u_offset_b;\n}\n"},raster:{fragmentSource:"precision mediump float;\n\nuniform float u_opacity0;\nuniform float u_opacity1;\nuniform sampler2D u_image0;\nuniform sampler2D u_image1;\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nuniform float u_brightness_low;\nuniform float u_brightness_high;\n\nuniform float u_saturation_factor;\nuniform float u_contrast_factor;\nuniform vec3 u_spin_weights;\n\nvoid main() {\n\n    // read and cross-fade colors from the main and parent tiles\n    vec4 color0 = texture2D(u_image0, v_pos0);\n    vec4 color1 = texture2D(u_image1, v_pos1);\n    vec4 color = color0 * u_opacity0 + color1 * u_opacity1;\n    vec3 rgb = color.rgb;\n\n    // spin\n    rgb = vec3(\n        dot(rgb, u_spin_weights.xyz),\n        dot(rgb, u_spin_weights.zxy),\n        dot(rgb, u_spin_weights.yzx));\n\n    // saturation\n    float average = (color.r + color.g + color.b) / 3.0;\n    rgb += (average - rgb) * u_saturation_factor;\n\n    // contrast\n    rgb = (rgb - 0.5) * u_contrast_factor + 0.5;\n\n    // brightness\n    vec3 u_high_vec = vec3(u_brightness_low, u_brightness_low, u_brightness_low);\n    vec3 u_low_vec = vec3(u_brightness_high, u_brightness_high, u_brightness_high);\n\n    gl_FragColor = vec4(mix(u_high_vec, u_low_vec, rgb), color.a);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nuniform mat4 u_matrix;\nuniform vec2 u_tl_parent;\nuniform float u_scale_parent;\nuniform float u_buffer_scale;\n\nattribute vec2 a_pos;\nattribute vec2 a_texture_pos;\n\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5;\n    v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent;\n}\n"},icon:{fragmentSource:"precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp float u_opacity;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * u_opacity;\n    gl_FragColor = texture2D(u_texture, v_tex) * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"},sdf:{fragmentSource:"precision mediump float;\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform lowp float u_buffer;\nuniform lowp float u_gamma;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    lowp float dist = texture2D(u_texture, v_tex).a;\n    lowp float fade_alpha = texture2D(u_fadetexture, v_fade_tex).a;\n    lowp float gamma = u_gamma * v_gamma_scale;\n    lowp float alpha = smoothstep(u_buffer - gamma, u_buffer + gamma, dist) * fade_alpha;\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec4 a_data1;\nattribute vec4 a_data2;\n\n\n// matrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_skewed;\nuniform float u_extra;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_tex = a_data1.xy;\n    mediump float a_labelminzoom = a_data1[2];\n    mediump vec2 a_zoom = a_data2.st;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_skewed) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - y * u_extra);\n    v_gamma_scale = perspective_scale;\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"},collisionbox:{fragmentSource:"precision mediump float;\n\nuniform float u_zoom;\nuniform float u_maxzoom;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n\n    float alpha = 0.5;\n\n    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha;\n\n    if (v_placement_zoom > u_zoom) {\n        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha;\n    }\n\n    if (u_zoom >= v_max_zoom) {\n        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25;\n    }\n\n    if (v_placement_zoom >= u_maxzoom) {\n        gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2;\n    }\n}\n",vertexSource:"precision highp float;\n\nattribute vec2 a_pos;\nattribute vec2 a_extrude;\nattribute vec2 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_scale;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n     gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0);\n\n     v_max_zoom = a_data.x;\n     v_placement_zoom = a_data.y;\n}\n"}};e.exports._createProgram=function(t,e){var r=this.gl,a=r.createProgram(),s=o[t],l="";if(e)for(var u=0;u<e.length;u++)l+="#define "+e[u]+"\n";var c=r.createShader(r.FRAGMENT_SHADER);r.shaderSource(c,l+s.fragmentSource),r.compileShader(c),n(r.getShaderParameter(c,r.COMPILE_STATUS),r.getShaderInfoLog(c)),r.attachShader(a,c);var h=r.createShader(r.VERTEX_SHADER);r.shaderSource(h,l+s.vertexSource),r.compileShader(h),n(r.getShaderParameter(h,r.COMPILE_STATUS),r.getShaderInfoLog(h)),r.attachShader(a,h),r.linkProgram(a),n(r.getProgramParameter(a,r.LINK_STATUS),r.getProgramInfoLog(a));for(var f={},d=r.getProgramParameter(a,r.ACTIVE_ATTRIBUTES),p=0;p<d;p++){var g=r.getActiveAttrib(a,p);f[g.name]=p}for(var m={},v=r.getProgramParameter(a,r.ACTIVE_UNIFORMS),y=0;y<v;y++){var b=r.getActiveUniform(a,y);m[b.name]=r.getUniformLocation(a,b.name)}return i.extend({program:a,definition:s,attributes:f,numAttributes:d},f,m)},e.exports._createProgramCached=function(t,e){this.cache=this.cache||{},this._showOverdrawInspector&&(e=e||[],e.push("OVERDRAW_INSPECTOR"));var r=JSON.stringify({name:t,macros:e});return this.cache[r]||(this.cache[r]=this._createProgram(t,e)),this.cache[r]},e.exports.useProgram=function(t,e){var r=this.gl,n=this._createProgramCached(t,e),i=this.currentProgram;return i!==n&&(r.useProgram(n.program),this.currentProgram=n),n}},{"../../util/util":362,assert:29,path:392}],286:[function(t,e,r){"use strict";function n(){this.boundProgram=null,this.boundVertexBuffer=null,this.boundVertexBuffer2=null,this.boundElementBuffer=null,this.vao=null}var i=t("assert");e.exports=n;var o=!1;n.prototype.bind=function(t,e,r,n,a){var s=t.extVertexArrayObject;if(void 0===s&&(s=t.extVertexArrayObject=t.getExtension("OES_vertex_array_object")),s?(this.vao||(this.vao=s.createVertexArrayOES()),s.bindVertexArrayOES(this.vao)):o||(console.warn("Not using VertexArrayObject extension."),o=!0),this.boundProgram)i(this.boundProgram===e,"trying to bind a VAO to a different shader"),i(this.boundVertexBuffer===r,"trying to bind a VAO to a different vertex buffer"),i(this.boundVertexBuffer2===a,"trying to bind a VAO to a different vertex buffer"),i(this.boundElementBuffer===n,"trying to bind a VAO to a different element buffer");else{var l,u=s?0:t.currentNumAttributes||0,c=e.numAttributes;for(l=u;l<c;l++)t.enableVertexAttribArray(l);if(!s){for(i(l>0),l=c;l<u;l++)t.disableVertexAttribArray(l);t.currentNumAttributes=c}r.bind(t),r.setVertexAttribPointers(t,e),a&&(a.bind(t),a.setVertexAttribPointers(t,e)),n&&n.bind(t),s&&(this.boundProgram=e,this.boundVertexBuffer=r,this.boundVertexBuffer2=a,this.boundElementBuffer=n)}},n.prototype.unbind=function(t){var e=t.extVertexArrayObject;e&&e.bindVertexArrayOES(null)},n.prototype.destroy=function(t){var e=t.extVertexArrayObject;e&&this.vao&&(e.deleteVertexArrayOES(this.vao),this.vao=null)}},{assert:29}],287:[function(t,e,r){"use strict";function n(t){t=t||{},this._data=t.data,void 0!==t.maxzoom&&(this.maxzoom=t.maxzoom);var e=u/this.tileSize;this.geojsonVtOptions={buffer:(void 0!==t.buffer?t.buffer:128)*e,tolerance:(void 0!==t.tolerance?t.tolerance:.375)*e,extent:u,maxZoom:this.maxzoom},this.cluster=t.cluster||!1,this.superclusterOptions={maxZoom:Math.min(t.clusterMaxZoom,this.maxzoom-1)||this.maxzoom-1,extent:u,radius:(t.clusterRadius||50)*e,log:!1},this._pyramid=new a({tileSize:this.tileSize,minzoom:this.minzoom,maxzoom:this.maxzoom,reparseOverscaled:!0,load:this._loadTile.bind(this),abort:this._abortTile.bind(this),unload:this._unloadTile.bind(this),add:this._addTile.bind(this),remove:this._removeTile.bind(this),redoPlacement:this._redoTilePlacement.bind(this)})}var i=t("../util/util"),o=t("../util/evented"),a=t("./tile_pyramid"),s=t("./source"),l=t("resolve-url"),u=t("../data/bucket").EXTENT;e.exports=n,n.prototype=i.inherit(o,{minzoom:0,maxzoom:18,tileSize:512,_dirty:!0,isTileClipped:!0,setData:function(t){return this._data=t,this._dirty=!0,this.fire("change"),this.map&&this.update(this.map.transform),this},onAdd:function(t){this.map=t},loaded:function(){return this._loaded&&this._pyramid.loaded()},update:function(t){this._dirty&&this._updateData(),this._loaded&&this._pyramid.update(this.used,t)},reload:function(){this._loaded&&this._pyramid.reload()},serialize:function(){return{type:"geojson",data:this._data}},getVisibleCoordinates:s._getVisibleCoordinates,getTile:s._getTile,queryRenderedFeatures:s._queryRenderedVectorFeatures,querySourceFeatures:s._querySourceFeatures,_updateData:function(){this._dirty=!1;var t={tileSize:this.tileSize,source:this.id,geojsonVtOptions:this.geojsonVtOptions,cluster:this.cluster,superclusterOptions:this.superclusterOptions},e=this._data;"string"==typeof e?t.url="undefined"!=typeof window?l(window.location.href,e):e:t.data=JSON.stringify(e),this.workerID=this.dispatcher.send("parse geojson",t,function(t){this._loaded=!0,t?this.fire("error",{error:t}):(this._pyramid.reload(),this.fire("change"))}.bind(this))},_loadTile:function(t){var e=t.coord.z>this.maxzoom?Math.pow(2,t.coord.z-this.maxzoom):1,r={uid:t.uid,coord:t.coord,zoom:t.coord.z,maxZoom:this.maxzoom,tileSize:this.tileSize,source:this.id,overscaling:e,angle:this.map.transform.angle,pitch:this.map.transform.pitch,showCollisionBoxes:this.map.showCollisionBoxes};t.workerID=this.dispatcher.send("load geojson tile",r,function(e,r){if(t.unloadVectorData(this.map.painter),!t.aborted){if(e)return void this.fire("tile.error",{tile:t});t.loadVectorData(r,this.map.style),t.redoWhenDone&&(t.redoWhenDone=!1,t.redoPlacement(this)),this.fire("tile.load",{tile:t})}}.bind(this),this.workerID)},_abortTile:function(t){t.aborted=!0},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.unloadVectorData(this.map.painter),this.dispatcher.send("remove tile",{uid:t.uid,source:this.id},null,t.workerID)},redoPlacement:s.redoPlacement,_redoTilePlacement:function(t){t.redoPlacement(this)}})},{"../data/bucket":260,"../util/evented":354,"../util/util":362,"./source":292,"./tile_pyramid":295,"resolve-url":411}],288:[function(t,e,r){"use strict";function n(t){this.features=t,this.length=t.length,this.extent=s}function i(t){this.type=t.type,this.rawGeometry=1===t.type?[t.geometry]:t.geometry,this.properties=t.tags,this.extent=s}var o=t("point-geometry"),a=t("vector-tile").VectorTileFeature,s=t("../data/bucket").EXTENT;e.exports=n,n.prototype.feature=function(t){return new i(this.features[t])},i.prototype.loadGeometry=function(){var t=this.rawGeometry;this.geometry=[];for(var e=0;e<t.length;e++){for(var r=t[e],n=[],i=0;i<r.length;i++)n.push(new o(r[i][0],r[i][1]));this.geometry.push(n)}return this.geometry},i.prototype.bbox=function(){this.geometry||this.loadGeometry();for(var t=this.geometry,e=1/0,r=-(1/0),n=1/0,i=-(1/0),o=0;o<t.length;o++)for(var a=t[o],s=0;s<a.length;s++){var l=a[s];e=Math.min(e,l.x),r=Math.max(r,l.x),n=Math.min(n,l.y),i=Math.max(i,l.y)}return[e,n,r,i]},i.prototype.toGeoJSON=a.prototype.toGeoJSON},{"../data/bucket":260,"point-geometry":400,"vector-tile":456}],289:[function(t,e,r){"use strict";function n(t){this.urls=t.urls,this.coordinates=t.coordinates,c.getImage(t.url,function(e,r){e||(this.image=r,this.image.addEventListener("load",function(){this.map._rerender()}.bind(this)),this._loaded=!0,this.map&&this.setCoordinates(t.coordinates))}.bind(this))}var i=t("../util/util"),o=t("./tile"),a=t("./tile_coord"),s=t("../geo/lng_lat"),l=t("point-geometry"),u=t("../util/evented"),c=t("../util/ajax"),h=t("../data/bucket").EXTENT,f=t("../render/draw_raster").RasterBoundsArray,d=t("../data/buffer"),p=t("../render/vertex_array_object");e.exports=n,n.prototype=i.inherit(u,{onAdd:function(t){this.map=t,this.image&&this.setCoordinates(this.coordinates)},setCoordinates:function(t){this.coordinates=t;var e=this.map,r=t.map(function(t){return e.transform.locationCoordinate(s.convert(t)).zoomTo(0)}),n=this.centerCoord=i.getCoordinatesCenter(r);n.column=Math.round(n.column),n.row=Math.round(n.row);var u=r.map(function(t){var e=t.zoomTo(n.zoom);return new l(Math.round((e.column-n.column)*h),Math.round((e.row-n.row)*h))}),c=32767,g=new f;return g.emplaceBack(u[0].x,u[0].y,0,0),g.emplaceBack(u[1].x,u[1].y,c,0),g.emplaceBack(u[3].x,u[3].y,0,c),g.emplaceBack(u[2].x,u[2].y,c,c),this.tile=new o(new a(n.zoom,n.column,n.row)),this.tile.buckets={},this.tile.boundsBuffer=new d(g.serialize(),f.serialize(),d.BufferType.VERTEX),this.tile.boundsVAO=new p,this.fire("change"),this},loaded:function(){return this.image&&this.image.complete},update:function(){},reload:function(){},prepare:function(){if(this._loaded&&this.loaded()){var t=this.map.painter,e=t.gl;this.tile.texture?(e.bindTexture(e.TEXTURE_2D,this.tile.texture),e.texSubImage2D(e.TEXTURE_2D,0,0,0,e.RGBA,e.UNSIGNED_BYTE,this.image)):(this.tile.texture=e.createTexture(),e.bindTexture(e.TEXTURE_2D,this.tile.texture),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_S,e.CLAMP_TO_EDGE),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_T,e.CLAMP_TO_EDGE),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MIN_FILTER,e.LINEAR),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MAG_FILTER,e.LINEAR),e.texImage2D(e.TEXTURE_2D,0,e.RGBA,e.RGBA,e.UNSIGNED_BYTE,this.image))}},getVisibleCoordinates:function(){return this.tile?[this.tile.coord]:[]},getTile:function(){return this.tile},serialize:function(){return{type:"image",urls:this.urls,coordinates:this.coordinates}}})},{"../data/bucket":260,"../data/buffer":265,"../geo/lng_lat":269,"../render/draw_raster":280,"../render/vertex_array_object":286,"../util/ajax":347,"../util/evented":354,"../util/util":362,"./tile":293,"./tile_coord":294,"point-geometry":400}],290:[function(t,e,r){"use strict";var n=t("../data/bucket");e.exports=function(t,e,r){return e*(n.EXTENT/(t.tileSize*Math.pow(2,r-t.coord.z)))}},{"../data/bucket":260}],291:[function(t,e,r){"use strict";function n(t){i.extend(this,i.pick(t,["url","tileSize"])),s._loadTileJSON.call(this,t)}var i=t("../util/util"),o=t("../util/ajax"),a=t("../util/evented"),s=t("./source"),l=t("../util/mapbox").normalizeTileURL;
++e.exports=n,n.prototype=i.inherit(a,{minzoom:0,maxzoom:22,roundZoom:!0,tileSize:512,_loaded:!1,onAdd:function(t){this.map=t},loaded:function(){return this._pyramid&&this._pyramid.loaded()},update:function(t){this._pyramid&&this._pyramid.update(this.used,t,this.map.style.rasterFadeDuration)},reload:function(){},serialize:function(){return{type:"raster",url:this.url,tileSize:this.tileSize}},getVisibleCoordinates:s._getVisibleCoordinates,getTile:s._getTile,_loadTile:function(t){function e(e,r){if(delete t.request,!t.aborted){if(e)return t.errored=!0,void this.fire("tile.error",{tile:t,error:e});var n=this.map.painter.gl;t.texture=this.map.painter.getTexture(r.width),t.texture?(n.bindTexture(n.TEXTURE_2D,t.texture),n.texSubImage2D(n.TEXTURE_2D,0,0,0,n.RGBA,n.UNSIGNED_BYTE,r)):(t.texture=n.createTexture(),n.bindTexture(n.TEXTURE_2D,t.texture),n.texParameteri(n.TEXTURE_2D,n.TEXTURE_MIN_FILTER,n.LINEAR_MIPMAP_NEAREST),n.texParameteri(n.TEXTURE_2D,n.TEXTURE_MAG_FILTER,n.LINEAR),n.texParameteri(n.TEXTURE_2D,n.TEXTURE_WRAP_S,n.CLAMP_TO_EDGE),n.texParameteri(n.TEXTURE_2D,n.TEXTURE_WRAP_T,n.CLAMP_TO_EDGE),n.pixelStorei(n.UNPACK_PREMULTIPLY_ALPHA_WEBGL,!0),n.texImage2D(n.TEXTURE_2D,0,n.RGBA,n.RGBA,n.UNSIGNED_BYTE,r),t.texture.size=r.width),n.generateMipmap(n.TEXTURE_2D),t.timeAdded=(new Date).getTime(),this.map.animationLoop.set(this.style.rasterFadeDuration),t.source=this,t.loaded=!0,this.fire("tile.load",{tile:t})}}var r=l(t.coord.url(this.tiles),this.url,this.tileSize);t.request=o.getImage(r,e.bind(this))},_abortTile:function(t){t.aborted=!0,t.request&&(t.request.abort(),delete t.request)},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.texture&&this.map.painter.saveTexture(t.texture)}})},{"../util/ajax":347,"../util/evented":354,"../util/mapbox":359,"../util/util":362,"./source":292}],292:[function(t,e,r){"use strict";function n(t,e){var r=t.tile.coord,n=e.tile.coord;return r.z-n.z||r.y-n.y||r.x-n.x}function i(t){for(var e=t[0]||{},r=1;r<t.length;r++){var n=t[r];for(var i in n){var o=n[i],a=e[i];if(void 0===a)a=e[i]=o;else for(var s=0;s<o.length;s++)a.push(o[s])}}return e}var o=t("../util/util"),a=t("../util/ajax"),s=t("../util/browser"),l=t("./tile_pyramid"),u=t("../util/mapbox").normalizeSourceURL,c=t("./tile_coord");r._loadTileJSON=function(t){var e=function(t,e){return t?void this.fire("error",{error:t}):(o.extend(this,o.pick(e,["tiles","minzoom","maxzoom","attribution"])),e.vector_layers&&(this.vectorLayers=e.vector_layers,this.vectorLayerIds=this.vectorLayers.map(function(t){return t.id})),this._pyramid=new l({tileSize:this.tileSize,minzoom:this.minzoom,maxzoom:this.maxzoom,roundZoom:this.roundZoom,reparseOverscaled:this.reparseOverscaled,load:this._loadTile.bind(this),abort:this._abortTile.bind(this),unload:this._unloadTile.bind(this),add:this._addTile.bind(this),remove:this._removeTile.bind(this),redoPlacement:this._redoTilePlacement?this._redoTilePlacement.bind(this):void 0}),void this.fire("load"))}.bind(this);t.url?a.getJSON(u(t.url),e):s.frame(e.bind(this,null,t))},r.redoPlacement=function(){if(this._pyramid)for(var t=this._pyramid.orderedIDs(),e=0;e<t.length;e++){var r=this._pyramid.getTile(t[e]);this._redoTilePlacement(r)}},r._getTile=function(t){return this._pyramid.getTile(t.id)},r._getVisibleCoordinates=function(){return this._pyramid?this._pyramid.renderedIDs().map(c.fromID):[]},r._queryRenderedVectorFeatures=function(t,e,r,o){if(!this._pyramid)return{};var a=this._pyramid.tilesIn(t);a.sort(n);for(var s=this.map.style._layers,l=[],u=0;u<a.length;u++){var c=a[u];c.tile.featureIndex&&l.push(c.tile.featureIndex.query({queryGeometry:c.queryGeometry,scale:c.scale,tileSize:c.tile.tileSize,bearing:o,params:e},s))}return i(l)},r._querySourceFeatures=function(t){if(!this._pyramid)return[];for(var e=this._pyramid,r=e.renderedIDs().map(function(t){return e.getTile(t)}),n=[],i={},o=0;o<r.length;o++){var a=r[o],s=new c(Math.min(a.sourceMaxZoom,a.coord.z),a.coord.x,a.coord.y,0).id;i[s]||(i[s]=!0,a.querySourceFeatures(n,t))}return n},r.create=function(e){var n={vector:t("./vector_tile_source"),raster:t("./raster_tile_source"),geojson:t("./geojson_source"),video:t("./video_source"),image:t("./image_source")};return r.is(e)?e:new n[e.type](e)},r.is=function(e){var r={vector:t("./vector_tile_source"),raster:t("./raster_tile_source"),geojson:t("./geojson_source"),video:t("./video_source"),image:t("./image_source")};for(var n in r)if(e instanceof r[n])return!0;return!1}},{"../util/ajax":347,"../util/browser":348,"../util/mapbox":359,"../util/util":362,"./geojson_source":287,"./image_source":289,"./raster_tile_source":291,"./tile_coord":294,"./tile_pyramid":295,"./vector_tile_source":296,"./video_source":297}],293:[function(t,e,r){"use strict";function n(t,e,r){this.coord=t,this.uid=o.uniqueId(),this.loaded=!1,this.isUnloaded=!1,this.uses=0,this.tileSize=e,this.sourceMaxZoom=r,this.buckets={}}function i(t,e){for(var r={},n=0;n<t.length;n++){var i=e.getLayer(t[n].layerId);if(i){var s=a.create(o.extend({layer:i,childLayers:t[n].childLayerIds.map(e.getLayer.bind(e)).filter(function(t){return t})},t[n]));r[s.id]=s}}return r}var o=t("../util/util"),a=t("../data/bucket"),s=t("../data/feature_index"),l=t("vector-tile"),u=t("pbf"),c=t("../util/vectortile_to_geojson"),h=t("feature-filter"),f=t("../symbol/collision_tile"),d=t("../symbol/collision_box");e.exports=n,n.prototype={loadVectorData:function(t,e){this.loaded=!0,t&&(this.collisionBoxArray=new d(t.collisionBoxArray),this.collisionTile=new f(t.collisionTile,this.collisionBoxArray),this.featureIndex=new s(t.featureIndex,t.rawTileData,this.collisionTile),this.rawTileData=t.rawTileData,this.buckets=i(t.buckets,e))},reloadSymbolData:function(t,e,r){if(!this.isUnloaded){this.collisionTile=new f(t.collisionTile,this.collisionBoxArray),this.featureIndex.setCollisionTile(this.collisionTile);for(var n in this.buckets){var a=this.buckets[n];"symbol"===a.type&&(a.destroy(e.gl),delete this.buckets[n])}o.extend(this.buckets,i(t.buckets,r))}},unloadVectorData:function(t){for(var e in this.buckets){var r=this.buckets[e];r.destroy(t.gl)}this.collisionBoxArray=null,this.collisionTile=null,this.featureIndex=null,this.rawTileData=null,this.buckets=null,this.loaded=!1,this.isUnloaded=!0},redoPlacement:function(t){function e(e,r){this.reloadSymbolData(r,t.map.painter,t.map.style),t.fire("tile.load",{tile:this}),this.redoingPlacement=!1,this.redoWhenDone&&(this.redoPlacement(t),this.redoWhenDone=!1)}return!this.loaded||this.redoingPlacement?void(this.redoWhenDone=!0):(this.redoingPlacement=!0,void t.dispatcher.send("redo placement",{uid:this.uid,source:t.id,angle:t.map.transform.angle,pitch:t.map.transform.pitch,showCollisionBoxes:t.map.showCollisionBoxes},e.bind(this),this.workerID))},getBucket:function(t){return this.buckets&&this.buckets[t.ref||t.id]},querySourceFeatures:function(t,e){if(this.rawTileData){this.vtLayers||(this.vtLayers=new l.VectorTile(new u(new Uint8Array(this.rawTileData))).layers);var r=this.vtLayers._geojsonTileLayer||this.vtLayers[e.sourceLayer];if(r)for(var n=h(e.filter),i={z:this.coord.z,x:this.coord.x,y:this.coord.y},o=0;o<r.length;o++){var a=r.feature(o);if(n(a)){var s=new c(a,this.coord.z,this.coord.x,this.coord.y);s.tile=i,t.push(s)}}}}}},{"../data/bucket":260,"../data/feature_index":266,"../symbol/collision_box":319,"../symbol/collision_tile":321,"../util/util":362,"../util/vectortile_to_geojson":363,"feature-filter":99,pbf:394,"vector-tile":456}],294:[function(t,e,r){"use strict";function n(t,e,r,n){s(!isNaN(t)&&t>=0&&t%1===0),s(!isNaN(e)&&e>=0&&e%1===0),s(!isNaN(r)&&r>=0&&r%1===0),isNaN(n)&&(n=0),this.z=+t,this.x=+e,this.y=+r,this.w=+n,n*=2,n<0&&(n=n*-1-1);var i=1<<this.z;this.id=32*(i*i*n+i*this.y+this.x)+this.z,this.posMatrix=null}function i(t,e){if(t.row>e.row){var r=t;t=e,e=r}return{x0:t.column,y0:t.row,x1:e.column,y1:e.row,dx:e.column-t.column,dy:e.row-t.row}}function o(t,e,r,n,i){var o=Math.max(r,Math.floor(e.y0)),a=Math.min(n,Math.ceil(e.y1));if(t.x0===e.x0&&t.y0===e.y0?t.x0+e.dy/t.dy*t.dx<e.x1:t.x1-e.dy/t.dy*t.dx<e.x0){var s=t;t=e,e=s}for(var l=t.dx/t.dy,u=e.dx/e.dy,c=t.dx>0,h=e.dx<0,f=o;f<a;f++){var d=l*Math.max(0,Math.min(t.dy,f+c-t.y0))+t.x0,p=u*Math.max(0,Math.min(e.dy,f+h-e.y0))+e.x0;i(Math.floor(p),Math.ceil(d),f)}}function a(t,e,r,n,a,s){var l,u=i(t,e),c=i(e,r),h=i(r,t);u.dy>c.dy&&(l=u,u=c,c=l),u.dy>h.dy&&(l=u,u=h,h=l),c.dy>h.dy&&(l=c,c=h,h=l),u.dy&&o(h,u,n,a,s),c.dy&&o(h,c,n,a,s)}var s=t("assert"),l=t("../geo/coordinate");e.exports=n,n.prototype.toString=function(){return this.z+"/"+this.x+"/"+this.y},n.prototype.toCoordinate=function(t){var e=Math.min(this.z,t),r=Math.pow(2,e),n=this.y,i=this.x+r*this.w;return new l(i,n,e)},n.fromID=function(t){var e=t%32,r=1<<e,i=(t-e)/32,o=i%r,a=(i-o)/r%r,s=Math.floor(i/(r*r));return s%2!==0&&(s=s*-1-1),s/=2,new n(e,o,a,s)},n.prototype.url=function(t,e){return t[(this.x+this.y)%t.length].replace("{prefix}",(this.x%16).toString(16)+(this.y%16).toString(16)).replace("{z}",Math.min(this.z,e||this.z)).replace("{x}",this.x).replace("{y}",this.y)},n.prototype.parent=function(t){return 0===this.z?null:this.z>t?new n(this.z-1,this.x,this.y,this.w):new n(this.z-1,Math.floor(this.x/2),Math.floor(this.y/2),this.w)},n.prototype.wrapped=function(){return new n(this.z,this.x,this.y,0)},n.prototype.children=function(t){if(this.z>=t)return[new n(this.z+1,this.x,this.y,this.w)];var e=this.z+1,r=2*this.x,i=2*this.y;return[new n(e,r,i,this.w),new n(e,r+1,i,this.w),new n(e,r,i+1,this.w),new n(e,r+1,i+1,this.w)]},n.cover=function(t,e,r){function i(t,e,i){var a,l,u;if(i>=0&&i<=o)for(a=t;a<e;a++)l=(a%o+o)%o,u=new n(r,l,i,Math.floor(a/o)),s[u.id]=u}var o=1<<t,s={};return a(e[0],e[1],e[2],0,o,i),a(e[2],e[3],e[0],0,o,i),Object.keys(s).map(function(t){return s[t]})}},{"../geo/coordinate":268,assert:29}],295:[function(t,e,r){"use strict";function n(t){this.tileSize=t.tileSize,this.minzoom=t.minzoom,this.maxzoom=t.maxzoom,this.roundZoom=t.roundZoom,this.reparseOverscaled=t.reparseOverscaled,this._load=t.load,this._abort=t.abort,this._unload=t.unload,this._add=t.add,this._remove=t.remove,this._redoPlacement=t.redoPlacement,this._tiles={},this._cache=new u(0,function(t){return this._unload(t)}.bind(this)),this._filterRendered=this._filterRendered.bind(this)}function i(t,e,r){var n=r.zoomTo(Math.min(t.z,e));return{x:(n.column-(t.x+t.w*Math.pow(2,t.z)))*f,y:(n.row-t.y)*f}}function o(t,e){return t%32-e%32}var a=t("./tile"),s=t("./tile_coord"),l=t("point-geometry"),u=t("../util/lru_cache"),c=t("../geo/coordinate"),h=t("../util/util"),f=t("../data/bucket").EXTENT;e.exports=n,n.maxOverzooming=10,n.maxUnderzooming=3,n.prototype={loaded:function(){for(var t in this._tiles)if(!this._tiles[t].loaded&&!this._tiles[t].errored)return!1;return!0},orderedIDs:function(){return Object.keys(this._tiles).map(Number).sort(o)},renderedIDs:function(){return this.orderedIDs().filter(this._filterRendered)},_filterRendered:function(t){return this._tiles[t].loaded&&!this._coveredTiles[t]},reload:function(){this._cache.reset();for(var t in this._tiles)this._load(this._tiles[t])},getTile:function(t){return this._tiles[t]},getZoom:function(t){return t.zoom+Math.log(t.tileSize/this.tileSize)/Math.LN2},coveringZoomLevel:function(t){return(this.roundZoom?Math.round:Math.floor)(this.getZoom(t))},coveringTiles:function(t){var e=this.coveringZoomLevel(t),r=e;if(e<this.minzoom)return[];e>this.maxzoom&&(e=this.maxzoom);var n=t,i=n.locationCoordinate(n.center)._zoomTo(e),o=new l(i.column-.5,i.row-.5);return s.cover(e,[n.pointCoordinate(new l(0,0))._zoomTo(e),n.pointCoordinate(new l(n.width,0))._zoomTo(e),n.pointCoordinate(new l(n.width,n.height))._zoomTo(e),n.pointCoordinate(new l(0,n.height))._zoomTo(e)],this.reparseOverscaled?r:e).sort(function(t,e){return o.dist(t)-o.dist(e)})},findLoadedChildren:function(t,e,r){var n=!1;for(var i in this._tiles){var o=this._tiles[i];if(!(r[i]||!o.loaded||o.coord.z<=t.z||o.coord.z>e)){var a=Math.pow(2,Math.min(o.coord.z,this.maxzoom)-Math.min(t.z,this.maxzoom));if(Math.floor(o.coord.x/a)===t.x&&Math.floor(o.coord.y/a)===t.y)for(r[i]=!0,n=!0;o&&o.coord.z-1>t.z;){var s=o.coord.parent(this.maxzoom).id;o=this._tiles[s],o&&o.loaded&&(delete r[i],r[s]=!0)}}}return n},findLoadedParent:function(t,e,r){for(var n=t.z-1;n>=e;n--){t=t.parent(this.maxzoom);var i=this._tiles[t.id];if(i&&i.loaded)return r[t.id]=!0,i;if(this._cache.has(t.id))return this.addTile(t),r[t.id]=!0,this._tiles[t.id]}},updateCacheSize:function(t){var e=Math.ceil(t.width/t.tileSize)+1,r=Math.ceil(t.height/t.tileSize)+1,n=e*r,i=5;this._cache.setMaxSize(Math.floor(n*i))},update:function(t,e,r){var i,o,a;this.updateCacheSize(e);var l=(this.roundZoom?Math.round:Math.floor)(this.getZoom(e)),u=Math.max(l-n.maxOverzooming,this.minzoom),c=Math.max(l+n.maxUnderzooming,this.minzoom),f={},d=(new Date).getTime();this._coveredTiles={};var p=t?this.coveringTiles(e):[];for(i=0;i<p.length;i++)o=p[i],a=this.addTile(o),f[o.id]=!0,a.loaded||this.findLoadedChildren(o,c,f)||this.findLoadedParent(o,u,f);for(var g={},m=Object.keys(f),v=0;v<m.length;v++){var y=m[v];o=s.fromID(y),a=this._tiles[y],a&&a.timeAdded>d-(r||0)&&(this.findLoadedChildren(o,c,f)&&(f[y]=!0),this.findLoadedParent(o,u,g))}var b;for(b in g)f[b]||(this._coveredTiles[b]=!0);for(b in g)f[b]=!0;var x=h.keysDifference(this._tiles,f);for(i=0;i<x.length;i++)this.removeTile(+x[i]);this.transform=e},addTile:function(t){var e=this._tiles[t.id];if(e)return e;var r=t.wrapped();if(e=this._tiles[r.id],e||(e=this._cache.get(r.id),e&&this._redoPlacement&&this._redoPlacement(e)),!e){var n=t.z,i=n>this.maxzoom?Math.pow(2,n-this.maxzoom):1;e=new a(r,this.tileSize*i,this.maxzoom),this._load(e)}return e.uses++,this._tiles[t.id]=e,this._add(e,t),e},removeTile:function(t){var e=this._tiles[t];e&&(e.uses--,delete this._tiles[t],this._remove(e),e.uses>0||(e.loaded?this._cache.add(e.coord.wrapped().id,e):(this._abort(e),this._unload(e))))},clearTiles:function(){for(var t in this._tiles)this.removeTile(t);this._cache.reset()},tilesIn:function(t){for(var e={},r=this.orderedIDs(),n=1/0,o=1/0,a=-(1/0),l=-(1/0),u=t[0].zoom,h=0;h<t.length;h++){var d=t[h];n=Math.min(n,d.column),o=Math.min(o,d.row),a=Math.max(a,d.column),l=Math.max(l,d.row)}for(var p=0;p<r.length;p++){var g=this._tiles[r[p]],m=s.fromID(r[p]),v=[i(m,g.sourceMaxZoom,new c(n,o,u)),i(m,g.sourceMaxZoom,new c(a,l,u))];if(v[0].x<f&&v[0].y<f&&v[1].x>=0&&v[1].y>=0){for(var y=[],b=0;b<t.length;b++)y.push(i(m,g.sourceMaxZoom,t[b]));var x=e[g.coord.id];void 0===x&&(x=e[g.coord.id]={tile:g,queryGeometry:[],scale:Math.pow(2,this.transform.zoom-g.coord.z)}),x.queryGeometry.push(y)}}var _=[];for(var w in e)_.push(e[w]);return _}}},{"../data/bucket":260,"../geo/coordinate":268,"../util/lru_cache":358,"../util/util":362,"./tile":293,"./tile_coord":294,"point-geometry":400}],296:[function(t,e,r){"use strict";function n(t){if(i.extend(this,i.pick(t,["url","tileSize"])),this._options=i.extend({type:"vector"},t),512!==this.tileSize)throw new Error("vector tile sources must have a tileSize of 512");a._loadTileJSON.call(this,t)}var i=t("../util/util"),o=t("../util/evented"),a=t("./source"),s=t("../util/mapbox").normalizeTileURL;e.exports=n,n.prototype=i.inherit(o,{minzoom:0,maxzoom:22,tileSize:512,reparseOverscaled:!0,_loaded:!1,isTileClipped:!0,onAdd:function(t){this.map=t},loaded:function(){return this._pyramid&&this._pyramid.loaded()},update:function(t){this._pyramid&&this._pyramid.update(this.used,t)},reload:function(){this._pyramid&&this._pyramid.reload()},serialize:function(){return i.extend({},this._options)},getVisibleCoordinates:a._getVisibleCoordinates,getTile:a._getTile,queryRenderedFeatures:a._queryRenderedVectorFeatures,querySourceFeatures:a._querySourceFeatures,_loadTile:function(t){var e=t.coord.z>this.maxzoom?Math.pow(2,t.coord.z-this.maxzoom):1,r={url:s(t.coord.url(this.tiles,this.maxzoom),this.url),uid:t.uid,coord:t.coord,zoom:t.coord.z,tileSize:this.tileSize*e,source:this.id,overscaling:e,angle:this.map.transform.angle,pitch:this.map.transform.pitch,showCollisionBoxes:this.map.showCollisionBoxes};t.workerID?(r.rawTileData=t.rawTileData,this.dispatcher.send("reload tile",r,this._tileLoaded.bind(this,t),t.workerID)):t.workerID=this.dispatcher.send("load tile",r,this._tileLoaded.bind(this,t))},_tileLoaded:function(t,e,r){if(!t.aborted){if(e)return t.errored=!0,void this.fire("tile.error",{tile:t,error:e});t.loadVectorData(r,this.map.style),t.redoWhenDone&&(t.redoWhenDone=!1,t.redoPlacement(this)),this.fire("tile.load",{tile:t}),this.fire("tile.stats",r.bucketStats)}},_abortTile:function(t){t.aborted=!0,this.dispatcher.send("abort tile",{uid:t.uid,source:this.id},null,t.workerID)},_addTile:function(t){this.fire("tile.add",{tile:t})},_removeTile:function(t){this.fire("tile.remove",{tile:t})},_unloadTile:function(t){t.unloadVectorData(this.map.painter),this.dispatcher.send("remove tile",{uid:t.uid,source:this.id},null,t.workerID)},redoPlacement:a.redoPlacement,_redoTilePlacement:function(t){t.redoPlacement(this)}})},{"../util/evented":354,"../util/mapbox":359,"../util/util":362,"./source":292}],297:[function(t,e,r){"use strict";function n(t){this.urls=t.urls,this.coordinates=t.coordinates,c.getVideo(t.urls,function(e,r){if(!e){this.video=r,this.video.loop=!0;var n;this.video.addEventListener("playing",function(){n=this.map.style.animationLoop.set(1/0),this.map._rerender()}.bind(this)),this.video.addEventListener("pause",function(){this.map.style.animationLoop.cancel(n)}.bind(this)),this._loaded=!0,this.map&&(this.video.play(),this.setCoordinates(t.coordinates))}}.bind(this))}var i=t("../util/util"),o=t("./tile"),a=t("./tile_coord"),s=t("../geo/lng_lat"),l=t("point-geometry"),u=t("../util/evented"),c=t("../util/ajax"),h=t("../data/bucket").EXTENT,f=t("../render/draw_raster").RasterBoundsArray,d=t("../data/buffer"),p=t("../render/vertex_array_object");e.exports=n,n.prototype=i.inherit(u,{roundZoom:!0,getVideo:function(){return this.video},onAdd:function(t){this.map=t,this.video&&(this.video.play(),this.setCoordinates(this.coordinates))},setCoordinates:function(t){this.coordinates=t;var e=this.map,r=t.map(function(t){return e.transform.locationCoordinate(s.convert(t)).zoomTo(0)}),n=this.centerCoord=i.getCoordinatesCenter(r);n.column=Math.round(n.column),n.row=Math.round(n.row);var u=r.map(function(t){var e=t.zoomTo(n.zoom);return new l(Math.round((e.column-n.column)*h),Math.round((e.row-n.row)*h))}),c=32767,g=new f;return g.emplaceBack(u[0].x,u[0].y,0,0),g.emplaceBack(u[1].x,u[1].y,c,0),g.emplaceBack(u[3].x,u[3].y,0,c),g.emplaceBack(u[2].x,u[2].y,c,c),this.tile=new o(new a(n.zoom,n.column,n.row)),this.tile.buckets={},this.tile.boundsBuffer=new d(g.serialize(),f.serialize(),d.BufferType.VERTEX),this.tile.boundsVAO=new p,this.fire("change"),this},loaded:function(){return this.video&&this.video.readyState>=2},update:function(){},reload:function(){},prepare:function(){if(this._loaded&&!(this.video.readyState<2)){var t=this.map.painter.gl;this.tile.texture?(t.bindTexture(t.TEXTURE_2D,this.tile.texture),t.texSubImage2D(t.TEXTURE_2D,0,0,0,t.RGBA,t.UNSIGNED_BYTE,this.video)):(this.tile.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.tile.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texImage2D(t.TEXTURE_2D,0,t.RGBA,t.RGBA,t.UNSIGNED_BYTE,this.video)),this._currentTime=this.video.currentTime}},getVisibleCoordinates:function(){return this.tile?[this.tile.coord]:[]},getTile:function(){return 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a(t);o.xhr=u.getArrayBuffer(t.url,r.bind(this))},"reload tile":function(t,e){var r=this.loaded[t.source],n=t.uid;if(r&&r[n]){var i=r[n];i.parse(i.data,this.layerFamilies,this.actor,t.rawTileData,e)}},"abort tile":function(t){var e=this.loading[t.source],r=t.uid;e&&e[r]&&(e[r].xhr.abort(),delete e[r])},"remove tile":function(t){var e=this.loaded[t.source],r=t.uid;e&&e[r]&&delete e[r]},"redo placement":function(t,e){var r=this.loaded[t.source],n=this.loading[t.source],i=t.uid;if(r&&r[i]){var o=r[i],a=o.redoPlacement(t.angle,t.pitch,t.showCollisionBoxes);a.result&&e(null,a.result,a.transferables)}else n&&n[i]&&(n[i].angle=t.angle)},"parse geojson":function(t,e){var r=function(r,n){if(p(n,!0),r)return e(r);if("object"!=typeof n)return e(new Error("Input data is not a valid GeoJSON object."));try{this.geoJSONIndexes[t.source]=t.cluster?f(t.superclusterOptions).load(n.features):d(n,t.geojsonVtOptions)}catch(t){return 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n(t){this.coord=t.coord,this.uid=t.uid,this.zoom=t.zoom,this.tileSize=t.tileSize,this.source=t.source,this.overscaling=t.overscaling,this.angle=t.angle,this.pitch=t.pitch,this.showCollisionBoxes=t.showCollisionBoxes}function i(t){for(var e in t.arrayGroups)for(var r=t.arrayGroups[e],n=0;n<r.length;n++){var i=r[n];for(var o in i){var a=i[o];for(var s in a)if(a[s].length>0)return!0}}return!1}function o(t){return t.serialize()}function a(t){var e=[];for(var r in t){var n=t[r];for(var i in n.arrayGroups)for(var o=n.arrayGroups[i],a=0;a<o.length;a++){var s=o[a];for(var l in s){var u=s[l];for(var c in u)e.push(u[c].arrayBuffer)}}}return e}function s(t){return t.id}var l=t("../data/feature_index"),u=t("../symbol/collision_tile"),c=t("../data/bucket"),h=t("../symbol/collision_box"),f=t("../util/dictionary_coder");e.exports=n,n.prototype.parse=function(t,e,r,n,d){function p(t,e){for(var r=0;r<t.length;r++){var n=t.feature(r);n.index=r;for(var i in e)e[i].filter(n)&&e[i].features.push(n)}}function g(t){if(t)return d(t);if(F++,2===F){for(var e=C.length-1;e>=0;e--)m(T,C[e]);v()}}function m(t,e){var r=Date.now();e.populateBuffers(w,O,D);var n=Date.now()-r;if("symbol"!==e.type)for(var i=0;i<e.features.length;i++){var o=e.features[i];M.insert(o,o.index,e.sourceLayerIndex,e.index)}e.features=null,A._total+=n,A[e.id]=(A[e.id]||0)+n}function v(){T.status="done",T.redoPlacementAfterDone&&(T.redoPlacement(T.angle,T.pitch,null),T.redoPlacementAfterDone=!1);var t=M.serialize(),e=w.serialize(),r=T.collisionBoxArray.serialize(),s=[n].concat(t.transferables).concat(e.transferables),l=I.filter(i);d(null,{buckets:l.map(o),bucketStats:A,featureIndex:t.data,collisionTile:e.data,collisionBoxArray:r,rawTileData:n},a(l).concat(s))}this.status="parsing",this.data=t,this.collisionBoxArray=new h;var y,b,x,_,w=new u(this.angle,this.pitch,this.collisionBoxArray),M=new l(this.coord,this.overscaling,w,t.layers),k=new 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O)O[j]=Object.keys(O[j]).map(Number);D=Object.keys(D),r.send("get glyphs",{uid:this.uid,stacks:O},function(t,e){O=e,g(t)}),D.length?r.send("get icons",{icons:D},function(t,e){D=e,g(t)}):g()}for(y=P.length-1;y>=0;y--)m(this,P[y]);if(0===C.length)return v()},n.prototype.redoPlacement=function(t,e,r){if("done"!==this.status)return this.redoPlacementAfterDone=!0,this.angle=t,{};for(var n=new u(t,e,this.collisionBoxArray),s=this.symbolBuckets,l=s.length-1;l>=0;l--)s[l].placeFeatures(n,r);var c=n.serialize(),h=s.filter(i);return{result:{buckets:h.map(o),collisionTile:c.data},transferables:a(h).concat(c.transferables)}}},{"../data/bucket":260,"../data/feature_index":266,"../symbol/collision_box":319,"../symbol/collision_tile":321,"../util/dictionary_coder":353}],300:[function(t,e,r){"use strict";function n(){this.n=0,this.times=[]}e.exports=n,n.prototype.stopped=function(){return this.times=this.times.filter(function(t){return t.time>=(new Date).getTime()}),!this.times.length},n.prototype.set=function(t){return this.times.push({id:this.n,time:t+(new Date).getTime()}),this.n++},n.prototype.cancel=function(t){this.times=this.times.filter(function(e){return e.id!==t})}},{}],301:[function(t,e,r){"use strict";function n(t){this.base=t,this.retina=s.devicePixelRatio>1;var e=this.retina?"@2x":"";a.getJSON(l(t,e,".json"),function(t,e){return t?void this.fire("error",{error:t}):(this.data=e,void(this.img&&this.fire("load")))}.bind(this)),a.getImage(l(t,e,".png"),function(t,e){if(t)return void this.fire("error",{error:t});for(var r=e.getData(),n=e.data=new Uint8Array(r.length),i=0;i<r.length;i+=4){var o=r[i+3]/255;n[i+0]=r[i+0]*o,n[i+1]=r[i+1]*o,n[i+2]=r[i+2]*o,n[i+3]=r[i+3]}this.img=e,this.data&&this.fire("load")}.bind(this))}function i(){}var o=t("../util/evented"),a=t("../util/ajax"),s=t("../util/browser"),l=t("../util/mapbox").normalizeSpriteURL;e.exports=n,n.prototype=Object.create(o),n.prototype.toJSON=function(){return 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a=t("csscolorparser").parseCSSColor,s=t("../util/util"),l={};e.exports=n},{"../util/util":362,csscolorparser:84}],303:[function(t,e,r){"use strict";function n(t,e){this.animationLoop=e||new g,this.dispatcher=new p(Math.max(d.hardwareConcurrency-1,1),this),this.spriteAtlas=new l(512,512),this.lineAtlas=new u(256,512),this._layers={},this._order=[],this._groups=[],this.sources={},this.zoomHistory={},c.bindAll(["_forwardSourceEvent","_forwardTileEvent","_forwardLayerEvent","_redoPlacement"],this),this._resetUpdates();var r=function(t,e){if(t)return void this.fire("error",{error:t});if(!m.emitErrors(this,m(e))){this._loaded=!0,this.stylesheet=e,this.updateClasses();var r=e.sources;for(var n in r)this.addSource(n,r[n]);e.sprite&&(this.sprite=new a(e.sprite),this.sprite.on("load",this.fire.bind(this,"change"))),this.glyphSource=new s(e.glyphs),this._resolve(),this.fire("load")}}.bind(this);"string"==typeof t?h.getJSON(f(t),r):d.frame(r.bind(this,null,t)),this.on("source.load",function(t){var e=t.source;if(e&&e.vectorLayerIds)for(var r in this._layers){var n=this._layers[r];n.source===e.id&&this._validateLayer(n)}})}var i=t("../util/evented"),o=t("./style_layer"),a=t("./image_sprite"),s=t("../symbol/glyph_source"),l=t("../symbol/sprite_atlas"),u=t("../render/line_atlas"),c=t("../util/util"),h=t("../util/ajax"),f=t("../util/mapbox").normalizeStyleURL,d=t("../util/browser"),p=t("../util/dispatcher"),g=t("./animation_loop"),m=t("./validate_style"),v=t("../source/source"),y=t("./style_spec"),b=t("./style_function");e.exports=n,n.prototype=c.inherit(i,{_loaded:!1,_validateLayer:function(t){var e=this.sources[t.source];t.sourceLayer&&e&&e.vectorLayerIds&&e.vectorLayerIds.indexOf(t.sourceLayer)===-1&&this.fire("error",{error:new Error('Source layer "'+t.sourceLayer+'" does not exist on source "'+e.id+'" as specified by style layer "'+t.id+'"')})},loaded:function(){if(!this._loaded)return!1;for(var t in this.sources)if(!this.sources[t].loaded())return!1;return!(this.sprite&&!this.sprite.loaded())},_resolve:function(){var t,e;this._layers={},this._order=this.stylesheet.layers.map(function(t){return t.id});for(var r=0;r<this.stylesheet.layers.length;r++)e=this.stylesheet.layers[r],e.ref||(t=o.create(e),this._layers[t.id]=t,t.on("error",this._forwardLayerEvent));for(var n=0;n<this.stylesheet.layers.length;n++)if(e=this.stylesheet.layers[n],e.ref){var i=this.getLayer(e.ref);t=o.create(e,i),this._layers[t.id]=t,t.on("error",this._forwardLayerEvent)}this._groupLayers(),this._updateWorkerLayers()},_groupLayers:function(){var t;this._groups=[];for(var e=0;e<this._order.length;++e){var r=this._layers[this._order[e]];t&&r.source===t.source||(t=[],t.source=r.source,this._groups.push(t)),t.push(r)}},_updateWorkerLayers:function(t){this.dispatcher.broadcast(t?"update layers":"set layers",this._serializeLayers(t));
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e=this.zoomHistory;void 0===e.lastIntegerZoom&&(e.lastIntegerZoom=Math.floor(t),e.lastIntegerZoomTime=0,e.lastZoom=t),Math.floor(e.lastZoom)<Math.floor(t)?(e.lastIntegerZoom=Math.floor(t),e.lastIntegerZoomTime=Date.now()):Math.floor(e.lastZoom)>Math.floor(t)&&(e.lastIntegerZoom=Math.floor(t+1),e.lastIntegerZoomTime=Date.now()),e.lastZoom=t},_checkLoaded:function(){if(!this._loaded)throw new Error("Style is not done loading")},update:function(t,e){if(!this._updates.changed)return this;if(this._updates.allLayers)this._groupLayers(),this._updateWorkerLayers();else{var r=Object.keys(this._updates.layers);r.length&&this._updateWorkerLayers(r)}var n,i=Object.keys(this._updates.sources);for(n=0;n<i.length;n++)this._reloadSource(i[n]);for(n=0;n<this._updates.events.length;n++){var o=this._updates.events[n];this.fire(o[0],o[1])}return this._applyClasses(t,e),this._updates.changed&&this.fire("change"),this._resetUpdates(),this},_resetUpdates:function(){this._updates={events:[],layers:{},sources:{},paintProps:{}}},addSource:function(t,e){if(this._checkLoaded(),void 0!==this.sources[t])throw new Error("There is already a source with this ID");return!v.is(e)&&this._handleErrors(m.source,"sources."+t,e)?this:(e=v.create(e),this.sources[t]=e,e.id=t,e.style=this,e.dispatcher=this.dispatcher,e.on("load",this._forwardSourceEvent).on("error",this._forwardSourceEvent).on("change",this._forwardSourceEvent).on("tile.add",this._forwardTileEvent).on("tile.load",this._forwardTileEvent).on("tile.error",this._forwardTileEvent).on("tile.remove",this._forwardTileEvent).on("tile.stats",this._forwardTileEvent),this._updates.events.push(["source.add",{source:e}]),this._updates.changed=!0,this)},removeSource:function(t){if(this._checkLoaded(),void 0===this.sources[t])throw new Error("There is no source with this ID");var e=this.sources[t];return delete this.sources[t],e.off("load",this._forwardSourceEvent).off("error",this._forwardSourceEvent).off("change",this._forwardSourceEvent).off("tile.add",this._forwardTileEvent).off("tile.load",this._forwardTileEvent).off("tile.error",this._forwardTileEvent).off("tile.remove",this._forwardTileEvent).off("tile.stats",this._forwardTileEvent),this._updates.events.push(["source.remove",{source:e}]),this._updates.changed=!0,this},getSource:function(t){return this.sources[t]},addLayer:function(t,e){if(this._checkLoaded(),!(t instanceof o)){if(this._handleErrors(m.layer,"layers."+t.id,t,!1,{arrayIndex:-1}))return this;var r=t.ref&&this.getLayer(t.ref);t=o.create(t,r)}return this._validateLayer(t),t.on("error",this._forwardLayerEvent),this._layers[t.id]=t,this._order.splice(e?this._order.indexOf(e):1/0,0,t.id),this._updates.allLayers=!0,t.source&&(this._updates.sources[t.source]=!0),this._updates.events.push(["layer.add",{layer:t}]),this.updateClasses(t.id)},removeLayer:function(t){this._checkLoaded();var e=this._layers[t];if(void 0===e)throw new Error("There is no layer with this ID");for(var r in this._layers)this._layers[r].ref===t&&this.removeLayer(r);return e.off("error",this._forwardLayerEvent),delete this._layers[t],this._order.splice(this._order.indexOf(t),1),this._updates.allLayers=!0,this._updates.events.push(["layer.remove",{layer:e}]),this._updates.changed=!0,this},getLayer:function(t){return this._layers[t]},getReferentLayer:function(t){var e=this.getLayer(t);return e.ref&&(e=this.getLayer(e.ref)),e},setLayerZoomRange:function(t,e,r){this._checkLoaded();var n=this.getReferentLayer(t);return n.minzoom===e&&n.maxzoom===r?this:(null!=e&&(n.minzoom=e),null!=r&&(n.maxzoom=r),this._updateLayer(n))},setFilter:function(t,e){this._checkLoaded();var r=this.getReferentLayer(t);return this._handleErrors(m.filter,"layers."+r.id+".filter",e)?this:c.deepEqual(r.filter,e)?this:(r.filter=c.clone(e),this._updateLayer(r))},getFilter:function(t){return this.getReferentLayer(t).filter},setLayoutProperty:function(t,e,r){this._checkLoaded();var n=this.getReferentLayer(t);return c.deepEqual(n.getLayoutProperty(e),r)?this:(n.setLayoutProperty(e,r),this._updateLayer(n))},getLayoutProperty:function(t,e){return this.getReferentLayer(t).getLayoutProperty(e)},setPaintProperty:function(t,e,r,n){this._checkLoaded();var i=this.getLayer(t);if(c.deepEqual(i.getPaintProperty(e,n),r))return this;var o=i.isPaintValueFeatureConstant(e);i.setPaintProperty(e,r,n);var a=!(b.isFunctionDefinition(r)&&"$zoom"!==r.property&&void 0!==r.property);return 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i=t("../../util/util"),o=t("../style_layer");e.exports=n,n.prototype=i.inherit(o,{isHidden:function(){if(o.prototype.isHidden.apply(this,arguments))return!0;var t=0===this.paint["text-opacity"]||!this.layout["text-field"],e=0===this.paint["icon-opacity"]||!this.layout["icon-image"];return!(!t||!e)},getLayoutValue:function(t,e,r){return("text-rotation-alignment"!==t||"line"!==this.getLayoutValue("symbol-placement",e,r)||this.getLayoutProperty("text-rotation-alignment"))&&("icon-rotation-alignment"!==t||"line"!==this.getLayoutValue("symbol-placement",e,r)||this.getLayoutProperty("icon-rotation-alignment"))?o.prototype.getLayoutValue.apply(this,arguments):"map"}})},{"../../util/util":362,"../style_layer":306}],313:[function(t,e,r){"use strict";e.exports=t("mapbox-gl-style-spec/reference/latest")},{"mapbox-gl-style-spec/reference/latest":256}],314:[function(t,e,r){"use strict";function n(t,e,r){this.declaration=t,this.startTime=this.endTime=(new Date).getTime();var 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d=c.angleTo(h)-h.angleTo(f);for(d=Math.abs((d+3*Math.PI)%(2*Math.PI)-Math.PI),l.push({distance:s,angleDelta:d}),u+=d;s-l[0].distance>n;)u-=l.shift().angleDelta;if(u>i)return!1;a++,s+=h.dist(f)}return!0}e.exports=n},{}],318:[function(t,e,r){"use strict";function n(t,e,r,n,o){for(var a=[],s=0;s<t.length;s++)for(var l,u=t[s],c=0;c<u.length-1;c++){var h=u[c],f=u[c+1];h.x<e&&f.x<e||(h.x<e?h=new i(e,h.y+(f.y-h.y)*((e-h.x)/(f.x-h.x)))._round():f.x<e&&(f=new i(e,h.y+(f.y-h.y)*((e-h.x)/(f.x-h.x)))._round()),h.y<r&&f.y<r||(h.y<r?h=new i(h.x+(f.x-h.x)*((r-h.y)/(f.y-h.y)),r)._round():f.y<r&&(f=new i(h.x+(f.x-h.x)*((r-h.y)/(f.y-h.y)),r)._round()),h.x>=n&&f.x>=n||(h.x>=n?h=new i(n,h.y+(f.y-h.y)*((n-h.x)/(f.x-h.x)))._round():f.x>=n&&(f=new i(n,h.y+(f.y-h.y)*((n-h.x)/(f.x-h.x)))._round()),h.y>=o&&f.y>=o||(h.y>=o?h=new i(h.x+(f.x-h.x)*((o-h.y)/(f.y-h.y)),o)._round():f.y>=o&&(f=new i(h.x+(f.x-h.x)*((o-h.y)/(f.y-h.y)),o)._round()),l&&h.equals(l[l.length-1])||(l=[h],a.push(l)),l.push(f)))))}return a}var i=t("point-geometry");e.exports=n},{"point-geometry":400}],319:[function(t,e,r){"use strict";var n=t("../util/struct_array"),i=t("../util/util"),o=t("point-geometry"),a=e.exports=new n({members:[{type:"Int16",name:"anchorPointX"},{type:"Int16",name:"anchorPointY"},{type:"Int16",name:"x1"},{type:"Int16",name:"y1"},{type:"Int16",name:"x2"},{type:"Int16",name:"y2"},{type:"Float32",name:"maxScale"},{type:"Uint32",name:"featureIndex"},{type:"Uint16",name:"sourceLayerIndex"},{type:"Uint16",name:"bucketIndex"},{type:"Int16",name:"bbox0"},{type:"Int16",name:"bbox1"},{type:"Int16",name:"bbox2"},{type:"Int16",name:"bbox3"},{type:"Float32",name:"placementScale"}]});i.extendAll(a.prototype.StructType.prototype,{get anchorPoint(){return new o(this.anchorPointX,this.anchorPointY)}})},{"../util/struct_array":360,"../util/util":362,"point-geometry":400}],320:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s,l,u,c){var h=a.top*s-l,f=a.bottom*s+l,d=a.left*s-l,p=a.right*s+l;if(this.boxStartIndex=t.length,u){var g=f-h,m=p-d;if(g>0)if(g=Math.max(10*s,g),c){var v=e[r.segment+1].sub(e[r.segment])._unit()._mult(m),y=[r.sub(v),r.add(v)];this._addLineCollisionBoxes(t,y,r,0,m,g,n,i,o)}else this._addLineCollisionBoxes(t,e,r,r.segment,m,g,n,i,o)}else t.emplaceBack(r.x,r.y,d,h,p,f,1/0,n,i,o,0,0,0,0,0);this.boxEndIndex=t.length}e.exports=n,n.prototype._addLineCollisionBoxes=function(t,e,r,n,i,o,a,s,l){var u=o/2,c=Math.floor(i/u),h=-o/2,f=this.boxes,d=r,p=n+1,g=h;do{if(p--,p<0)return f;g-=e[p].dist(d),d=e[p]}while(g>-i/2);for(var m=e[p].dist(e[p+1]),v=0;v<c;v++){for(var y=-i/2+v*u;g+m<y;){if(g+=m,p++,p+1>=e.length)return f;m=e[p].dist(e[p+1])}var b=y-g,x=e[p],_=e[p+1],w=_.sub(x)._unit()._mult(b)._add(x)._round(),M=Math.max(Math.abs(y-h)-u/2,0),k=i/2/M;t.emplaceBack(w.x,w.y,-o/2,-o/2,o/2,o/2,k,a,s,l,0,0,0,0,0)}return f}},{}],321:[function(t,e,r){"use strict";function n(t,e,r){if("object"==typeof t){var n=t;r=e,t=n.angle,e=n.pitch,this.grid=new a(n.grid),this.ignoredGrid=new a(n.ignoredGrid)}else this.grid=new a(o,12,6),this.ignoredGrid=new a(o,12,0);this.angle=t,this.pitch=e;var i=Math.sin(t),s=Math.cos(t);if(this.rotationMatrix=[s,-i,i,s],this.reverseRotationMatrix=[s,i,-i,s],this.yStretch=1/Math.cos(e/180*Math.PI),this.yStretch=Math.pow(this.yStretch,1.3),this.collisionBoxArray=r,0===r.length){r.emplaceBack();var l=32767;r.emplaceBack(0,0,0,-l,0,l,l,0,0,0,0,0,0,0,0,0),r.emplaceBack(o,0,0,-l,0,l,l,0,0,0,0,0,0,0,0,0),r.emplaceBack(0,0,-l,0,l,0,l,0,0,0,0,0,0,0,0,0),r.emplaceBack(0,o,-l,0,l,0,l,0,0,0,0,0,0,0,0,0)}this.tempCollisionBox=r.get(0),this.edges=[r.get(1),r.get(2),r.get(3),r.get(4)]}var i=t("point-geometry"),o=t("../data/bucket").EXTENT,a=t("grid-index");e.exports=n,n.prototype.serialize=function(){var t={angle:this.angle,pitch:this.pitch,grid:this.grid.toArrayBuffer(),ignoredGrid:this.ignoredGrid.toArrayBuffer()};return{data:t,transferables:[t.grid,t.ignoredGrid]}},n.prototype.minScale=.25,n.prototype.maxScale=2,n.prototype.placeCollisionFeature=function(t,e,r){for(var n=this.collisionBoxArray,o=this.minScale,a=this.rotationMatrix,s=this.yStretch,l=t.boxStartIndex;l<t.boxEndIndex;l++){var u=n.get(l),c=u.anchorPoint._matMult(a),h=c.x,f=c.y,d=h+u.x1,p=f+u.y1*s,g=h+u.x2,m=f+u.y2*s;if(u.bbox0=d,u.bbox1=p,u.bbox2=g,u.bbox3=m,!e)for(var v=this.grid.query(d,p,g,m),y=0;y<v.length;y++){var b=n.get(v[y]),x=b.anchorPoint._matMult(a);if(o=this.getPlacementScale(o,c,u,x,b),o>=this.maxScale)return o}if(r){var _;if(this.angle){var w=this.reverseRotationMatrix,M=new i(u.x1,u.y1).matMult(w),k=new i(u.x2,u.y1).matMult(w),A=new i(u.x1,u.y2).matMult(w),T=new i(u.x2,u.y2).matMult(w);_=this.tempCollisionBox,_.anchorPointX=u.anchorPoint.x,_.anchorPointY=u.anchorPoint.y,_.x1=Math.min(M.x,k.x,A.x,T.x),_.y1=Math.min(M.y,k.x,A.x,T.x),_.x2=Math.max(M.x,k.x,A.x,T.x),_.y2=Math.max(M.y,k.x,A.x,T.x),_.maxScale=u.maxScale}else _=u;for(var E=0;E<this.edges.length;E++){var S=this.edges[E];if(o=this.getPlacementScale(o,u.anchorPoint,_,S.anchorPoint,S),o>=this.maxScale)return o}}}return o},n.prototype.queryRenderedSymbols=function(t,e,r,n,o){var a={},s=[],l=this.collisionBoxArray,u=this.rotationMatrix,c=new i(t,e)._matMult(u),h=this.tempCollisionBox;h.anchorX=c.x,h.anchorY=c.y,h.x1=0,h.y1=0,h.x2=r-t,h.y2=n-e,h.maxScale=o,o=h.maxScale;for(var f=[c.x+h.x1/o,c.y+h.y1/o*this.yStretch,c.x+h.x2/o,c.y+h.y2/o*this.yStretch],d=this.grid.query(f[0],f[1],f[2],f[3]),p=this.ignoredGrid.query(f[0],f[1],f[2],f[3]),g=0;g<p.length;g++)d.push(p[g]);for(var m=0;m<d.length;m++){var v=l.get(d[m]),y=v.sourceLayerIndex,b=v.featureIndex;if(void 0===a[y]&&(a[y]={}),!a[y][b]){var x=v.anchorPoint.matMult(u),_=this.getPlacementScale(this.minScale,c,h,x,v);_>=o&&(a[y][b]=!0,s.push(d[m]))}}return s},n.prototype.getPlacementScale=function(t,e,r,n,i){var o=e.x-n.x,a=e.y-n.y,s=(i.x1-r.x2)/o,l=(i.x2-r.x1)/o,u=(i.y1-r.y2)*this.yStretch/a,c=(i.y2-r.y1)*this.yStretch/a;(isNaN(s)||isNaN(l))&&(s=l=1),(isNaN(u)||isNaN(c))&&(u=c=1);var h=Math.min(Math.max(s,l),Math.max(u,c)),f=i.maxScale,d=r.maxScale;return h>f&&(h=f),h>d&&(h=d),h>t&&h>=i.placementScale&&(t=h),t},n.prototype.insertCollisionFeature=function(t,e,r){for(var n=r?this.ignoredGrid:this.grid,i=this.collisionBoxArray,o=t.boxStartIndex;o<t.boxEndIndex;o++){var a=i.get(o);a.placementScale=e,e<this.maxScale&&n.insert(o,a.bbox0,a.bbox1,a.bbox2,a.bbox3)}}},{"../data/bucket":260,"grid-index":222,"point-geometry":400}],322:[function(t,e,r){"use strict";function n(t,e,r,n,o,a,s,l,u){var c=n?.6*a*s:0,h=Math.max(n?n.right-n.left:0,o?o.right-o.left:0),f=0===t[0].x||t[0].x===u||0===t[0].y||t[0].y===u;e-h*s<e/4&&(e=h*s+e/4);var d=2*a,p=f?e/2*l%e:(h/2+d)*s*l%e;return i(t,p,e,c,r,h*s,f,!1,u)}function i(t,e,r,n,l,u,c,h,f){for(var d=u/2,p=0,g=0;g<t.length-1;g++)p+=t[g].dist(t[g+1]);for(var m=0,v=e-r,y=[],b=0;b<t.length-1;b++){for(var x=t[b],_=t[b+1],w=x.dist(_),M=_.angleTo(x);v+r<m+w;){v+=r;var k=(v-m)/w,A=o(x.x,_.x,k),T=o(x.y,_.y,k);if(A>=0&&A<f&&T>=0&&T<f&&v-d>=0&&v+d<=p){var E=new a(A,T,M,b)._round();n&&!s(t,E,u,n,l)||y.push(E)}}m+=w}return h||y.length||c||(y=i(t,m/2,r,n,l,u,c,!0,f)),y}var o=t("../util/interpolate"),a=t("../symbol/anchor"),s=t("./check_max_angle");e.exports=n},{"../symbol/anchor":316,"../util/interpolate":356,"./check_max_angle":317}],323:[function(t,e,r){"use strict";function n(t,e){this.width=t,this.height=e,this.bin=new i(t,e),this.index={},this.ids={},this.data=new Uint8Array(t*e)}var i=t("shelf-pack");e.exports=n,n.prototype.getGlyphs=function(){var t,e,r,n={};for(var i in this.ids)t=i.split("#"),e=t[0],r=t[1],n[e]||(n[e]=[]),n[e].push(r);return n},n.prototype.getRects=function(){var t,e,r,n={};for(var i in this.ids)t=i.split("#"),e=t[0],r=t[1],n[e]||(n[e]={}),n[e][r]=this.index[i];return n},n.prototype.addGlyph=function(t,e,r,n){if(!r)return null;var i=e+"#"+r.id;if(this.index[i])return this.ids[i].indexOf(t)<0&&this.ids[i].push(t),this.index[i];if(!r.bitmap)return null;var o=r.width+2*n,a=r.height+2*n,s=1,l=o+2*s,u=a+2*s;l+=4-l%4,u+=4-u%4;var c=this.bin.packOne(l,u);if(c||(this.resize(),c=this.bin.packOne(l,u)),!c)return console.warn("glyph bitmap overflow"),null;this.index[i]=c,this.ids[i]=[t];for(var h=this.data,f=r.bitmap,d=0;d<a;d++)for(var p=this.width*(c.y+d+s)+c.x+s,g=o*d,m=0;m<o;m++)h[p+m]=f[g+m];return this.dirty=!0,c},n.prototype.resize=function(){var t=this.width,e=this.height;if(!(t>512||e>512)){this.texture&&(this.gl&&this.gl.deleteTexture(this.texture),this.texture=null),this.width*=2,this.height*=2,this.bin.resize(this.width,this.height);for(var r,n,i=new ArrayBuffer(this.width*this.height),o=0;o<e;o++)r=new Uint8Array(this.data.buffer,e*o,t),n=new Uint8Array(i,e*o*2,t),n.set(r);this.data=new Uint8Array(i)}},n.prototype.bind=function(t){this.gl=t,this.texture?t.bindTexture(t.TEXTURE_2D,this.texture):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texImage2D(t.TEXTURE_2D,0,t.ALPHA,this.width,this.height,0,t.ALPHA,t.UNSIGNED_BYTE,null))},n.prototype.updateTexture=function(t){this.bind(t),this.dirty&&(t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width,this.height,t.ALPHA,t.UNSIGNED_BYTE,this.data),this.dirty=!1)}},{"shelf-pack":424}],324:[function(t,e,r){"use strict";function n(t){this.url=t&&a(t),this.atlases={},this.stacks={},this.loading={}}function i(t,e,r){var n=1;this.advance=t.advance,this.left=t.left-r-n,this.top=t.top+r+n,this.rect=e}function o(t,e,r,n){return n=n||"abc",r.replace("{s}",n[t.length%n.length]).replace("{fontstack}",t).replace("{range}",e)}var a=t("../util/mapbox").normalizeGlyphsURL,s=t("../util/ajax").getArrayBuffer,l=t("../util/glyphs"),u=t("../symbol/glyph_atlas"),c=t("pbf");e.exports=n,n.prototype.getSimpleGlyphs=function(t,e,r,n){void 0===this.stacks[t]&&(this.stacks[t]={}),void 0===this.atlases[t]&&(this.atlases[t]=new u(128,128));for(var o,a={},s=this.stacks[t],l=this.atlases[t],c=3,h={},f=0,d=0;d<e.length;d++){var p=e[d];if(o=Math.floor(p/256),s[o]){var g=s[o].glyphs[p],m=l.addGlyph(r,t,g,c);g&&(a[p]=new i(g,m,c))}else void 0===h[o]&&(h[o]=[],f++),h[o].push(p)}f||n(void 0,a,t);var v=function(e,o,s){if(!e)for(var u=this.stacks[t][o]=s.stacks[0],d=0;d<h[o].length;d++){var p=h[o][d],g=u.glyphs[p],m=l.addGlyph(r,t,g,c);g&&(a[p]=new i(g,m,c))}f--,f||n(void 0,a,t)}.bind(this);for(var y in h)this.loadRange(t,y,v)},n.prototype.loadRange=function(t,e,r){if(256*e>65535)return r("glyphs > 65535 not supported");void 0===this.loading[t]&&(this.loading[t]={});var n=this.loading[t];if(n[e])n[e].push(r);else{n[e]=[r];var i=256*e+"-"+(256*e+255),a=o(t,i,this.url);s(a,function(t,r){for(var i=!t&&new l(new c(new Uint8Array(r))),o=0;o<n[e].length;o++)n[e][o](t,e,i);delete n[e]})}},n.prototype.getGlyphAtlas=function(t){return this.atlases[t]}},{"../symbol/glyph_atlas":323,"../util/ajax":347,"../util/glyphs":355,"../util/mapbox":359,pbf:394}],325:[function(t,e,r){"use strict";e.exports=function(t,e,r){function n(n){c.push(t[n]),h.push(r[n]),f.push(e[n]),
++d++}function i(t,e,r){var n=u[t];return delete u[t],u[e]=n,h[n][0].pop(),h[n][0]=h[n][0].concat(r[0]),n}function o(t,e,r){var n=l[e];return delete l[e],l[t]=n,h[n][0].shift(),h[n][0]=r[0].concat(h[n][0]),n}function a(t,e,r){var n=r?e[0][e[0].length-1]:e[0][0];return t+":"+n.x+":"+n.y}var s,l={},u={},c=[],h=[],f=[],d=0;for(s=0;s<t.length;s++){var p=r[s],g=e[s];if(g){var m=a(g,p),v=a(g,p,!0);if(m in u&&v in l&&u[m]!==l[v]){var y=o(m,v,p),b=i(m,v,h[y]);delete l[m],delete u[v],u[a(g,h[b],!0)]=b,h[y]=null}else m in u?i(m,v,p):v in l?o(m,v,p):(n(s),l[m]=d-1,u[v]=d-1)}else n(s)}return{features:c,textFeatures:f,geometries:h}}},{}],326:[function(t,e,r){"use strict";function n(t,e,r,n,i,o,a,s,l){this.anchorPoint=t,this.tl=e,this.tr=r,this.bl=n,this.br=i,this.tex=o,this.angle=a,this.minScale=s,this.maxScale=l}function i(t,e,r,i,o,a){var u=e.image.rect,c=1,h=e.left-c,f=h+u.w/e.image.pixelRatio,d=e.top-c,p=d+u.h/e.image.pixelRatio,g=new s(h,d),m=new s(f,d),v=new s(f,p),y=new s(h,p),b=o["icon-rotate"]*Math.PI/180;if(a){var x=i[t.segment];if(t.y===x.y&&t.x===x.x&&t.segment+1<i.length){var _=i[t.segment+1];b+=Math.atan2(t.y-_.y,t.x-_.x)+Math.PI}else b+=Math.atan2(t.y-x.y,t.x-x.x)}if(b){var w=Math.sin(b),M=Math.cos(b),k=[M,-w,w,M];g=g.matMult(k),m=m.matMult(k),y=y.matMult(k),v=v.matMult(k)}return[new n(new s(t.x,t.y),g,m,y,v,e.image.rect,0,l,1/0)]}function o(t,e,r,i,o,u){for(var c=o["text-rotate"]*Math.PI/180,h=o["text-keep-upright"],f=e.positionedGlyphs,d=[],p=0;p<f.length;p++){var g=f[p],m=g.glyph,v=m.rect;if(v){var y,b=(g.x+m.advance/2)*r,x=l;u?(y=[],x=a(y,t,b,i,t.segment,!0),h&&(x=Math.min(x,a(y,t,b,i,t.segment,!1)))):y=[{anchorPoint:new s(t.x,t.y),offset:0,angle:0,maxScale:1/0,minScale:l}];for(var _=g.x+m.left,w=g.y-m.top,M=_+v.w,k=w+v.h,A=new s(_,w),T=new s(M,w),E=new s(_,k),S=new s(M,k),L=0;L<y.length;L++){var z=y[L],I=A,C=T,P=E,R=S,D=z.angle+c;if(D){var O=Math.sin(D),F=Math.cos(D),j=[F,-O,O,F];I=I.matMult(j),C=C.matMult(j),P=P.matMult(j),R=R.matMult(j)}var N=Math.max(z.minScale,x),B=(t.angle+c+z.offset+2*Math.PI)%(2*Math.PI);d.push(new n(z.anchorPoint,I,C,P,R,v,B,N,z.maxScale))}}}return d}function a(t,e,r,n,i,o){var a=!o;r<0&&(o=!o),o&&i++;var u=new s(e.x,e.y),c=n[i],h=1/0;r=Math.abs(r);for(var f=l;;){var d=u.dist(c),p=r/d,g=Math.atan2(c.y-u.y,c.x-u.x);if(o||(g+=Math.PI),a&&(g+=Math.PI),t.push({anchorPoint:u,offset:a?Math.PI:0,minScale:p,maxScale:h,angle:(g+2*Math.PI)%(2*Math.PI)}),p<=f)break;for(u=c;u.equals(c);)if(i+=o?1:-1,c=n[i],!c)return p;var m=c.sub(u)._unit();u=u.sub(m._mult(d)),h=p}return f}var s=t("point-geometry");e.exports={getIconQuads:i,getGlyphQuads:o};var l=.5},{"point-geometry":400}],327:[function(t,e,r){"use strict";function n(t,e,r){for(var n=[],o=0,a=t.length;o<a;o++){var s=i(t[o].properties,e["text-field"]);if(s){s=s.toString();var l=e["text-transform"];"uppercase"===l?s=s.toLocaleUpperCase():"lowercase"===l&&(s=s.toLocaleLowerCase());for(var u=0;u<s.length;u++)r[s.charCodeAt(u)]=!0;n[o]=s}else n[o]=null}return n}var i=t("../util/token");e.exports=n},{"../util/token":361}],328:[function(t,e,r){"use strict";function n(t,e,r,n){this.codePoint=t,this.x=e,this.y=r,this.glyph=n}function i(t,e,r,n,i,o){this.positionedGlyphs=t,this.text=e,this.top=r,this.bottom=n,this.left=i,this.right=o}function o(t,e,r,o,s,l,u,c,h){for(var f=[],d=new i(f,t,h[1],h[1],h[0],h[0]),p=-17,g=0,m=p,v=0;v<t.length;v++){var y=t.charCodeAt(v),b=e[y];b&&(f.push(new n(y,g,m,b)),g+=b.advance+c)}return!!f.length&&(a(d,e,o,r,s,l,u,h),d)}function a(t,e,r,n,i,o,a,u){var c=null,d=0,p=0,g=0,m=0,v=t.positionedGlyphs;if(n)for(var y=0;y<v.length;y++){var b=v[y];if(b.x-=d,b.y+=r*g,b.x>n&&null!==c){var x=v[c+1].x;m=Math.max(x,m);for(var _=c+1;_<=y;_++)v[_].y+=r,v[_].x-=x;if(a){var w=c;h[v[c].codePoint]&&w--,s(v,e,p,w,a)}p=c+1,c=null,d+=x,g++}f[b.codePoint]&&(c=y)}var M=v[v.length-1],k=M.x+e[M.codePoint].advance;m=Math.max(m,k);var A=(g+1)*r;s(v,e,p,v.length-1,a),l(v,a,i,o,m,r,g,u),t.top+=-o*A,t.bottom=t.top+A,t.left+=-i*m,t.right=t.left+m}function s(t,e,r,n,i){for(var o=e[t[n].codePoint].advance,a=(t[n].x+o)*i,s=r;s<=n;s++)t[s].x-=a}function l(t,e,r,n,i,o,a,s){for(var l=(e-r)*i+s[0],u=(-n*(a+1)+.5)*o+s[1],c=0;c<t.length;c++)t[c].x+=l,t[c].y+=u}function u(t,e){if(!t||!t.rect)return null;var r=e["icon-offset"][0],n=e["icon-offset"][1],i=r-t.width/2,o=i+t.width,a=n-t.height/2,s=a+t.height;return new c(t,a,s,i,o)}function c(t,e,r,n,i){this.image=t,this.top=e,this.bottom=r,this.left=n,this.right=i}e.exports={shapeText:o,shapeIcon:u};var h={32:!0,8203:!0},f={32:!0,38:!0,43:!0,45:!0,47:!0,173:!0,183:!0,8203:!0,8208:!0,8211:!0}},{}],329:[function(t,e,r){"use strict";function n(t,e){this.width=t,this.height=e,this.bin=new a(t,e),this.images={},this.data=!1,this.texture=0,this.filter=0,this.pixelRatio=1,this.dirty=!0}function i(t,e,r,n,i,o,a,s,l,u,c){var h,f,d=n*e+r,p=s*o+a;if(c)for(p-=o,f=-1;f<=u;f++,d=((f+u)%u+n)*e+r,p+=o)for(h=-1;h<=l;h++)i[p+h]=t[d+(h+l)%l];else for(f=0;f<u;f++,d+=e,p+=o)for(h=0;h<l;h++)i[p+h]=t[d+h]}function o(t,e,r,n,i){this.rect=t,this.width=e,this.height=r,this.sdf=n,this.pixelRatio=i}var a=t("shelf-pack"),s=t("../util/browser");e.exports=n,n.prototype.allocateImage=function(t,e){t/=this.pixelRatio,e/=this.pixelRatio;var r=2,n=t+r+(4-(t+r)%4),i=e+r+(4-(e+r)%4),o=this.bin.packOne(n,i);return o?o:(console.warn("SpriteAtlas out of space."),null)},n.prototype.getImage=function(t,e){if(this.images[t])return this.images[t];if(!this.sprite)return null;var r=this.sprite.getSpritePosition(t);if(!r.width||!r.height)return null;var n=this.allocateImage(r.width,r.height);if(!n)return null;var i=new o(n,r.width/r.pixelRatio,r.height/r.pixelRatio,r.sdf,r.pixelRatio/this.pixelRatio);return this.images[t]=i,this.copy(n,r,e),i},n.prototype.getPosition=function(t,e){var r=this.getImage(t,e),n=r&&r.rect;if(!n)return null;var i=r.width*r.pixelRatio,o=r.height*r.pixelRatio,a=1;return{size:[r.width,r.height],tl:[(n.x+a)/this.width,(n.y+a)/this.height],br:[(n.x+a+i)/this.width,(n.y+a+o)/this.height]}},n.prototype.allocate=function(){if(!this.data){var t=Math.floor(this.width*this.pixelRatio),e=Math.floor(this.height*this.pixelRatio);this.data=new Uint32Array(t*e);for(var r=0;r<this.data.length;r++)this.data[r]=0}},n.prototype.copy=function(t,e,r){if(this.sprite.img.data){var n=new Uint32Array(this.sprite.img.data.buffer);this.allocate();var o=this.data,a=1;i(n,this.sprite.img.width,e.x,e.y,o,this.width*this.pixelRatio,(t.x+a)*this.pixelRatio,(t.y+a)*this.pixelRatio,e.width,e.height,r),this.dirty=!0}},n.prototype.setSprite=function(t){t&&(this.pixelRatio=s.devicePixelRatio>1?2:1,this.canvas&&(this.canvas.width=this.width*this.pixelRatio,this.canvas.height=this.height*this.pixelRatio)),this.sprite=t},n.prototype.addIcons=function(t,e){for(var r=0;r<t.length;r++)this.getImage(t[r]);e(null,this.images)},n.prototype.bind=function(t,e){var r=!1;this.texture?t.bindTexture(t.TEXTURE_2D,this.texture):(this.texture=t.createTexture(),t.bindTexture(t.TEXTURE_2D,this.texture),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),r=!0);var n=e?t.LINEAR:t.NEAREST;n!==this.filter&&(t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,n),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,n),this.filter=n),this.dirty&&(this.allocate(),r?t.texImage2D(t.TEXTURE_2D,0,t.RGBA,this.width*this.pixelRatio,this.height*this.pixelRatio,0,t.RGBA,t.UNSIGNED_BYTE,new Uint8Array(this.data.buffer)):t.texSubImage2D(t.TEXTURE_2D,0,0,0,this.width*this.pixelRatio,this.height*this.pixelRatio,t.RGBA,t.UNSIGNED_BYTE,new Uint8Array(this.data.buffer)),this.dirty=!1)}},{"../util/browser":348,"shelf-pack":424}],330:[function(t,e,r){"use strict";var n=t("../util/util"),i=t("../util/interpolate"),o=t("../util/browser"),a=t("../geo/lng_lat"),s=t("../geo/lng_lat_bounds"),l=t("point-geometry"),u=e.exports=function(){};n.extend(u.prototype,{getCenter:function(){return this.transform.center},setCenter:function(t,e){return this.jumpTo({center:t},e),this},panBy:function(t,e,r){return this.panTo(this.transform.center,n.extend({offset:l.convert(t).mult(-1)},e),r),this},panTo:function(t,e,r){return this.easeTo(n.extend({center:t},e),r)},getZoom:function(){return this.transform.zoom},setZoom:function(t,e){return this.jumpTo({zoom:t},e),this},zoomTo:function(t,e,r){return this.easeTo(n.extend({zoom:t},e),r)},zoomIn:function(t,e){return this.zoomTo(this.getZoom()+1,t,e),this},zoomOut:function(t,e){return this.zoomTo(this.getZoom()-1,t,e),this},getBearing:function(){return this.transform.bearing},setBearing:function(t,e){return this.jumpTo({bearing:t},e),this},rotateTo:function(t,e,r){return this.easeTo(n.extend({bearing:t},e),r)},resetNorth:function(t,e){return this.rotateTo(0,n.extend({duration:1e3},t),e),this},snapToNorth:function(t,e){return Math.abs(this.getBearing())<this.options.bearingSnap?this.resetNorth(t,e):this},getPitch:function(){return this.transform.pitch},setPitch:function(t,e){return this.jumpTo({pitch:t},e),this},fitBounds:function(t,e,r){e=n.extend({padding:0,offset:[0,0],maxZoom:1/0},e),t=s.convert(t);var i=l.convert(e.offset),o=this.transform,a=o.project(t.getNorthWest()),u=o.project(t.getSouthEast()),c=u.sub(a),h=(o.width-2*e.padding-2*Math.abs(i.x))/c.x,f=(o.height-2*e.padding-2*Math.abs(i.y))/c.y;return e.center=o.unproject(a.add(u).div(2)),e.zoom=Math.min(o.scaleZoom(o.scale*Math.min(h,f)),e.maxZoom),e.bearing=0,e.linear?this.easeTo(e,r):this.flyTo(e,r)},jumpTo:function(t,e){this.stop();var r=this.transform,n=!1,i=!1,o=!1;return"zoom"in t&&r.zoom!==+t.zoom&&(n=!0,r.zoom=+t.zoom),"center"in t&&(r.center=a.convert(t.center)),"bearing"in t&&r.bearing!==+t.bearing&&(i=!0,r.bearing=+t.bearing),"pitch"in t&&r.pitch!==+t.pitch&&(o=!0,r.pitch=+t.pitch),this.fire("movestart",e).fire("move",e),n&&this.fire("zoomstart",e).fire("zoom",e).fire("zoomend",e),i&&this.fire("rotate",e),o&&this.fire("pitch",e),this.fire("moveend",e)},easeTo:function(t,e){this.stop(),t=n.extend({offset:[0,0],duration:500,easing:n.ease},t);var r,o,s=this.transform,u=l.convert(t.offset),c=this.getZoom(),h=this.getBearing(),f=this.getPitch(),d="zoom"in t?+t.zoom:c,p="bearing"in t?this._normalizeBearing(t.bearing,h):h,g="pitch"in t?+t.pitch:f;"center"in t?(r=a.convert(t.center),o=s.centerPoint.add(u)):"around"in t?(r=a.convert(t.around),o=s.locationPoint(r)):(o=s.centerPoint.add(u),r=s.pointLocation(o));var m=s.locationPoint(r);return t.animate===!1&&(t.duration=0),this.zooming=d!==c,this.rotating=h!==p,this.pitching=g!==f,t.noMoveStart||this.fire("movestart",e),this.zooming&&this.fire("zoomstart",e),clearTimeout(this._onEaseEnd),this._ease(function(t){this.zooming&&(s.zoom=i(c,d,t)),this.rotating&&(s.bearing=i(h,p,t)),this.pitching&&(s.pitch=i(f,g,t)),s.setLocationAtPoint(r,m.add(o.sub(m)._mult(t))),this.fire("move",e),this.zooming&&this.fire("zoom",e),this.rotating&&this.fire("rotate",e),this.pitching&&this.fire("pitch",e)},function(){t.delayEndEvents?this._onEaseEnd=setTimeout(this._easeToEnd.bind(this,e),t.delayEndEvents):this._easeToEnd(e)}.bind(this),t),this},_easeToEnd:function(t){this.zooming&&this.fire("zoomend",t),this.fire("moveend",t),this.zooming=!1,this.rotating=!1,this.pitching=!1},flyTo:function(t,e){function r(t){var e=(A*A-k*k+(t?-1:1)*L*L*T*T)/(2*(t?A:k)*L*T);return Math.log(Math.sqrt(e*e+1)-e)}function o(t){return(Math.exp(t)-Math.exp(-t))/2}function s(t){return(Math.exp(t)+Math.exp(-t))/2}function u(t){return o(t)/s(t)}this.stop(),t=n.extend({offset:[0,0],speed:1.2,curve:1.42,easing:n.ease},t);var c=this.transform,h=l.convert(t.offset),f=this.getZoom(),d=this.getBearing(),p=this.getPitch(),g="center"in t?a.convert(t.center):this.getCenter(),m="zoom"in t?+t.zoom:f,v="bearing"in t?this._normalizeBearing(t.bearing,d):d,y="pitch"in t?+t.pitch:p;Math.abs(c.center.lng)+Math.abs(g.lng)>180&&(c.center.lng>0&&g.lng<0?g.lng+=360:c.center.lng<0&&g.lng>0&&(g.lng-=360));var b=c.zoomScale(m-f),x=c.point,_="center"in t?c.project(g).sub(h.div(b)):x,w=c.worldSize,M=t.curve,k=Math.max(c.width,c.height),A=k/b,T=_.sub(x).mag();if("minZoom"in t){var E=n.clamp(Math.min(t.minZoom,f,m),c.minZoom,c.maxZoom),S=k/c.zoomScale(E-f);M=Math.sqrt(S/T*2)}var L=M*M,z=r(0),I=function(t){return s(z)/s(z+M*t)},C=function(t){return k*((s(z)*u(z+M*t)-o(z))/L)/T},P=(r(1)-z)/M;if(Math.abs(T)<1e-6){if(Math.abs(k-A)<1e-6)return this.easeTo(t);var R=A<k?-1:1;P=Math.abs(Math.log(A/k))/M,C=function(){return 0},I=function(t){return Math.exp(R*M*t)}}if("duration"in t)t.duration=+t.duration;else{var D="screenSpeed"in t?+t.screenSpeed/M:+t.speed;t.duration=1e3*P/D}return this.zooming=!0,d!==v&&(this.rotating=!0),p!==y&&(this.pitching=!0),this.fire("movestart",e),this.fire("zoomstart",e),this._ease(function(t){var r=t*P,n=C(r);c.zoom=f+c.scaleZoom(1/I(r)),c.center=c.unproject(x.add(_.sub(x).mult(n)),w),this.rotating&&(c.bearing=i(d,v,t)),this.pitching&&(c.pitch=i(p,y,t)),this.fire("move",e),this.fire("zoom",e),this.rotating&&this.fire("rotate",e),this.pitching&&this.fire("pitch",e)},function(){this.fire("zoomend",e),this.fire("moveend",e),this.zooming=!1,this.rotating=!1,this.pitching=!1},t),this},isEasing:function(){return!!this._abortFn},stop:function(){return this._abortFn&&(this._abortFn(),this._finishEase()),this},_ease:function(t,e,r){this._finishFn=e,this._abortFn=o.timed(function(e){t.call(this,r.easing(e)),1===e&&this._finishEase()},r.animate===!1?0:r.duration,this)},_finishEase:function(){delete this._abortFn;var t=this._finishFn;delete this._finishFn,t.call(this)},_normalizeBearing:function(t,e){t=n.wrap(t,-180,180);var r=Math.abs(t-e);return Math.abs(t-360-e)<r&&(t-=360),Math.abs(t+360-e)<r&&(t+=360),t},_updateEasing:function(t,e,r){var i;if(this.ease){var o=this.ease,a=(Date.now()-o.start)/o.duration,s=o.easing(a+.01)-o.easing(a),l=.27/Math.sqrt(s*s+1e-4)*.01,u=Math.sqrt(.0729-l*l);i=n.bezier(l,u,.25,1)}else i=r?n.bezier.apply(n,r):n.ease;return this.ease={start:(new Date).getTime(),to:Math.pow(2,e),duration:t,easing:i},i}})},{"../geo/lng_lat":269,"../geo/lng_lat_bounds":270,"../util/browser":348,"../util/interpolate":356,"../util/util":362,"point-geometry":400}],331:[function(t,e,r){"use strict";function n(t){a.setOptions(this,t)}var i=t("./control"),o=t("../../util/dom"),a=t("../../util/util");e.exports=n,n.createAttributionString=function(t){var e=[];for(var r in t){var n=t[r];n.attribution&&e.indexOf(n.attribution)<0&&e.push(n.attribution)}return e.sort(function(t,e){return t.length-e.length}),e=e.filter(function(t,r){for(var n=r+1;n<e.length;n++)if(e[n].indexOf(t)>=0)return!1;return!0}),e.join(" | ")},n.prototype=a.inherit(i,{options:{position:"bottom-right"},onAdd:function(t){var e="mapboxgl-ctrl-attrib",r=this._container=o.create("div",e,t.getContainer());return this._update(),t.on("source.load",this._update.bind(this)),t.on("source.change",this._update.bind(this)),t.on("source.remove",this._update.bind(this)),t.on("moveend",this._updateEditLink.bind(this)),r},_update:function(){this._map.style&&(this._container.innerHTML=n.createAttributionString(this._map.style.sources)),this._editLink=this._container.getElementsByClassName("mapbox-improve-map")[0],this._updateEditLink()},_updateEditLink:function(){if(this._editLink){var t=this._map.getCenter();this._editLink.href="https://www.mapbox.com/map-feedback/#/"+t.lng+"/"+t.lat+"/"+Math.round(this._map.getZoom()+1)}}})},{"../../util/dom":351,"../../util/util":362,"./control":332}],332:[function(t,e,r){"use strict";function n(){}e.exports=n,n.prototype={addTo:function(t){this._map=t;var e=this._container=this.onAdd(t);if(this.options&&this.options.position){var r=this.options.position,n=t._controlCorners[r];e.className+=" mapboxgl-ctrl",r.indexOf("bottom")!==-1?n.insertBefore(e,n.firstChild):n.appendChild(e)}return this},remove:function(){return this._container.parentNode.removeChild(this._container),this.onRemove&&this.onRemove(this._map),this._map=null,this}}},{}],333:[function(t,e,r){"use strict";function n(t){s.setOptions(this,t)}var i=t("./control"),o=t("../../util/browser"),a=t("../../util/dom"),s=t("../../util/util");e.exports=n;var l={enableHighAccuracy:!1,timeout:6e3};n.prototype=s.inherit(i,{options:{position:"top-right"},onAdd:function(t){var e="mapboxgl-ctrl",r=this._container=a.create("div",e+"-group",t.getContainer());return o.supportsGeolocation?(this._container.addEventListener("contextmenu",this._onContextMenu.bind(this)),this._geolocateButton=a.create("button",e+"-icon "+e+"-geolocate",this._container),this._geolocateButton.addEventListener("click",this._onClickGeolocate.bind(this)),r):r},_onContextMenu:function(t){t.preventDefault()},_onClickGeolocate:function(){navigator.geolocation.getCurrentPosition(this._success.bind(this),this._error.bind(this),l),this._timeoutId=setTimeout(this._finish.bind(this),1e4)},_success:function(t){this._map.jumpTo({center:[t.coords.longitude,t.coords.latitude],zoom:17,bearing:0,pitch:0}),this._finish()},_error:function(){this._finish()},_finish:function(){this._timeoutId&&clearTimeout(this._timeoutId),this._timeoutId=void 0}})},{"../../util/browser":348,"../../util/dom":351,"../../util/util":362,"./control":332}],334:[function(t,e,r){"use strict";function n(t){s.setOptions(this,t)}function i(t){return new MouseEvent(t.type,{button:2,buttons:2,bubbles:!0,cancelable:!0,detail:t.detail,view:t.view,screenX:t.screenX,screenY:t.screenY,clientX:t.clientX,clientY:t.clientY,movementX:t.movementX,movementY:t.movementY,ctrlKey:t.ctrlKey,shiftKey:t.shiftKey,altKey:t.altKey,metaKey:t.metaKey})}var o=t("./control"),a=t("../../util/dom"),s=t("../../util/util");e.exports=n,n.prototype=s.inherit(o,{options:{position:"top-right"},onAdd:function(t){var e="mapboxgl-ctrl",r=this._container=a.create("div",e+"-group",t.getContainer());return this._container.addEventListener("contextmenu",this._onContextMenu.bind(this)),this._zoomInButton=this._createButton(e+"-icon "+e+"-zoom-in",t.zoomIn.bind(t)),this._zoomOutButton=this._createButton(e+"-icon "+e+"-zoom-out",t.zoomOut.bind(t)),this._compass=this._createButton(e+"-icon "+e+"-compass",t.resetNorth.bind(t)),this._compassArrow=a.create("div","arrow",this._compass),this._compass.addEventListener("mousedown",this._onCompassDown.bind(this)),this._onCompassMove=this._onCompassMove.bind(this),this._onCompassUp=this._onCompassUp.bind(this),t.on("rotate",this._rotateCompassArrow.bind(this)),this._rotateCompassArrow(),this._el=t.getCanvasContainer(),r},_onContextMenu:function(t){t.preventDefault()},_onCompassDown:function(t){0===t.button&&(a.disableDrag(),document.addEventListener("mousemove",this._onCompassMove),document.addEventListener("mouseup",this._onCompassUp),this._el.dispatchEvent(i(t)),t.stopPropagation())},_onCompassMove:function(t){0===t.button&&(this._el.dispatchEvent(i(t)),t.stopPropagation())},_onCompassUp:function(t){0===t.button&&(document.removeEventListener("mousemove",this._onCompassMove),document.removeEventListener("mouseup",this._onCompassUp),a.enableDrag(),this._el.dispatchEvent(i(t)),t.stopPropagation())},_createButton:function(t,e){var r=a.create("button",t,this._container);return r.addEventListener("click",function(){e()}),r},_rotateCompassArrow:function(){var t="rotate("+this._map.transform.angle*(180/Math.PI)+"deg)";this._compassArrow.style.transform=t}})},{"../../util/dom":351,"../../util/util":362,"./control":332}],335:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),this._container=t.getContainer(),a.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../geo/lng_lat_bounds"),a=t("../../util/util");e.exports=n,n.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onMouseDown,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onMouseDown),this._enabled=!1)},_onMouseDown:function(t){t.shiftKey&&0===t.button&&(document.addEventListener("mousemove",this._onMouseMove,!1),document.addEventListener("keydown",this._onKeyDown,!1),document.addEventListener("mouseup",this._onMouseUp,!1),i.disableDrag(),this._startPos=i.mousePos(this._el,t),this._active=!0)},_onMouseMove:function(t){var e=this._startPos,r=i.mousePos(this._el,t);this._box||(this._box=i.create("div","mapboxgl-boxzoom",this._container),this._container.classList.add("mapboxgl-crosshair"),this._fireEvent("boxzoomstart",t));var n=Math.min(e.x,r.x),o=Math.max(e.x,r.x),a=Math.min(e.y,r.y),s=Math.max(e.y,r.y);i.setTransform(this._box,"translate("+n+"px,"+a+"px)"),this._box.style.width=o-n+"px",this._box.style.height=s-a+"px"},_onMouseUp:function(t){if(0===t.button){var e=this._startPos,r=i.mousePos(this._el,t),n=new o(this._map.unproject(e),this._map.unproject(r));this._finish(),e.x===r.x&&e.y===r.y?this._fireEvent("boxzoomcancel",t):this._map.fitBounds(n,{linear:!0}).fire("boxzoomend",{originalEvent:t,boxZoomBounds:n})}},_onKeyDown:function(t){27===t.keyCode&&(this._finish(),this._fireEvent("boxzoomcancel",t))},_finish:function(){this._active=!1,document.removeEventListener("mousemove",this._onMouseMove,!1),document.removeEventListener("keydown",this._onKeyDown,!1),document.removeEventListener("mouseup",this._onMouseUp,!1),this._container.classList.remove("mapboxgl-crosshair"),this._box&&(this._box.parentNode.removeChild(this._box),this._box=null),i.enableDrag()},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})}}},{"../../geo/lng_lat_bounds":270,"../../util/dom":351,"../../util/util":362}],336:[function(t,e,r){"use strict";function n(t){this._map=t,this._onDblClick=this._onDblClick.bind(this)}e.exports=n,n.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._map.on("dblclick",this._onDblClick),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._map.off("dblclick",this._onDblClick),this._enabled=!1)},_onDblClick:function(t){this._map.zoomTo(this._map.getZoom()+(t.originalEvent.shiftKey?-1:1),{around:t.lngLat})}}},{}],337:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),o.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../util/util");e.exports=n;var a=.3,s=o.bezier(0,0,a,1),l=1400,u=2500;n.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onDown),this._el.addEventListener("touchstart",this._onDown),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onDown),this._el.removeEventListener("touchstart",this._onDown),this._enabled=!1)},_onDown:function(t){this._ignoreEvent(t)||this.isActive()||(t.touches?(document.addEventListener("touchmove",this._onMove),document.addEventListener("touchend",this._onTouchEnd)):(document.addEventListener("mousemove",this._onMove),document.addEventListener("mouseup",this._onMouseUp)),this._active=!1,this._startPos=this._pos=i.mousePos(this._el,t),this._inertia=[[Date.now(),this._pos]])},_onMove:function(t){if(!this._ignoreEvent(t)){this.isActive()||(this._active=!0,this._fireEvent("dragstart",t),this._fireEvent("movestart",t));var e=i.mousePos(this._el,t),r=this._map;r.stop(),this._drainInertiaBuffer(),this._inertia.push([Date.now(),e]),r.transform.setLocationAtPoint(r.transform.pointLocation(this._pos),e),this._fireEvent("drag",t),this._fireEvent("move",t),this._pos=e,t.preventDefault()}},_onUp:function(t){if(this.isActive()){this._active=!1,this._fireEvent("dragend",t),this._drainInertiaBuffer();var e=function(){this._fireEvent("moveend",t)}.bind(this),r=this._inertia;if(r.length<2)return void e();var n=r[r.length-1],i=r[0],o=n[1].sub(i[1]),c=(n[0]-i[0])/1e3;if(0===c||n[1].equals(i[1]))return void e();var h=o.mult(a/c),f=h.mag();f>l&&(f=l,h._unit()._mult(f));var d=f/(u*a),p=h.mult(-d/2);this._map.panBy(p,{duration:1e3*d,easing:s,noMoveStart:!0},{originalEvent:t})}},_onMouseUp:function(t){this._ignoreEvent(t)||(this._onUp(t),document.removeEventListener("mousemove",this._onMove),document.removeEventListener("mouseup",this._onMouseUp))},_onTouchEnd:function(t){this._ignoreEvent(t)||(this._onUp(t),document.removeEventListener("touchmove",this._onMove),document.removeEventListener("touchend",this._onTouchEnd))},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})},_ignoreEvent:function(t){var e=this._map;if(e.boxZoom&&e.boxZoom.isActive())return!0;if(e.dragRotate&&e.dragRotate.isActive())return!0;if(t.touches)return t.touches.length>1;if(t.ctrlKey)return!0;var r=1,n=0;return"mousemove"===t.type?t.buttons&0===r:t.button!==n},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),r=160;t.length>0&&e-t[0][0]>r;)t.shift()}}},{"../../util/dom":351,"../../util/util":362}],338:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),a.bindHandlers(this)}var i=t("../../util/dom"),o=t("point-geometry"),a=t("../../util/util");e.exports=n;var s=.25,l=a.bezier(0,0,s,1),u=180,c=720;n.prototype={_enabled:!1,_active:!1,isEnabled:function(){return this._enabled},isActive:function(){return this._active},enable:function(){this.isEnabled()||(this._el.addEventListener("mousedown",this._onDown),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("mousedown",this._onDown),this._enabled=!1)},_onDown:function(t){if(!this._ignoreEvent(t)&&!this.isActive()){document.addEventListener("mousemove",this._onMove),document.addEventListener("mouseup",this._onUp),this._active=!1,this._inertia=[[Date.now(),this._map.getBearing()]],this._startPos=this._pos=i.mousePos(this._el,t),this._center=this._map.transform.centerPoint;var e=this._startPos.sub(this._center),r=e.mag();r<200&&(this._center=this._startPos.add(new o(-200,0)._rotate(e.angle()))),t.preventDefault()}},_onMove:function(t){if(!this._ignoreEvent(t)){this.isActive()||(this._active=!0,this._fireEvent("rotatestart",t),this._fireEvent("movestart",t));var e=this._map;e.stop();var r=this._pos,n=i.mousePos(this._el,t),o=this._center,a=r.sub(o).angleWith(n.sub(o))/Math.PI*180,s=e.getBearing()-a,l=this._inertia,u=l[l.length-1];this._drainInertiaBuffer(),l.push([Date.now(),e._normalizeBearing(s,u[1])]),e.transform.bearing=s,this._fireEvent("rotate",t),this._fireEvent("move",t),this._pos=n}},_onUp:function(t){if(!this._ignoreEvent(t)&&(document.removeEventListener("mousemove",this._onMove),document.removeEventListener("mouseup",this._onUp),this.isActive())){this._active=!1,this._fireEvent("rotateend",t),this._drainInertiaBuffer();var e=this._map,r=e.getBearing(),n=this._inertia,i=function(){Math.abs(r)<e.options.bearingSnap?e.resetNorth({noMoveStart:!0},{originalEvent:t}):this._fireEvent("moveend",t)}.bind(this);if(n.length<2)return void i();var o=n[0],a=n[n.length-1],h=n[n.length-2],f=e._normalizeBearing(r,h[1]),d=a[1]-o[1],p=d<0?-1:1,g=(a[0]-o[0])/1e3;if(0===d||0===g)return void i();var m=Math.abs(d*(s/g));m>u&&(m=u);var v=m/(c*s),y=p*m*(v/2);f+=y,Math.abs(e._normalizeBearing(f,0))<e.options.bearingSnap&&(f=e._normalizeBearing(0,f)),e.rotateTo(f,{duration:1e3*v,easing:l,noMoveStart:!0},{originalEvent:t})}},_fireEvent:function(t,e){return this._map.fire(t,{originalEvent:e})},_ignoreEvent:function(t){var e=this._map;if(e.boxZoom&&e.boxZoom.isActive())return!0;if(e.dragPan&&e.dragPan.isActive())return!0;if(t.touches)return t.touches.length>1;var r=t.ctrlKey?1:2,n=t.ctrlKey?0:2;return"mousemove"===t.type?t.buttons&0===r:t.button!==n},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),r=160;t.length>0&&e-t[0][0]>r;)t.shift()}}},{"../../util/dom":351,"../../util/util":362,"point-geometry":400}],339:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),this._onKeyDown=this._onKeyDown.bind(this)}e.exports=n;var i=80,o=2,a=5;n.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("keydown",this._onKeyDown,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("keydown",this._onKeyDown),this._enabled=!1)},_onKeyDown:function(t){if(!(t.altKey||t.ctrlKey||t.metaKey)){var e=this._map,r={originalEvent:t};switch(t.keyCode){case 61:case 107:case 171:case 187:e.zoomTo(Math.round(e.getZoom())+(t.shiftKey?2:1),r);break;case 189:case 109:case 173:e.zoomTo(Math.round(e.getZoom())-(t.shiftKey?2:1),r);break;case 37:t.shiftKey?e.easeTo({bearing:e.getBearing()-o},r):(t.preventDefault(),e.panBy([-i,0],r));break;case 39:t.shiftKey?e.easeTo({bearing:e.getBearing()+o},r):(t.preventDefault(),e.panBy([i,0],r));break;case 38:t.shiftKey?e.easeTo({pitch:e.getPitch()+a},r):(t.preventDefault(),e.panBy([0,-i],r));break;case 40:t.shiftKey?e.easeTo({pitch:Math.max(e.getPitch()-a,0)},r):(t.preventDefault(),e.panBy([0,i],r))}}}}},{}],340:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),a.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../util/browser"),a=t("../../util/util");e.exports=n;var s="undefined"!=typeof navigator?navigator.userAgent.toLowerCase():"",l=s.indexOf("firefox")!==-1,u=s.indexOf("safari")!==-1&&s.indexOf("chrom")===-1;n.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("wheel",this._onWheel,!1),this._el.addEventListener("mousewheel",this._onWheel,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("wheel",this._onWheel),this._el.removeEventListener("mousewheel",this._onWheel),this._enabled=!1)},_onWheel:function(t){var e;"wheel"===t.type?(e=t.deltaY,l&&t.deltaMode===window.WheelEvent.DOM_DELTA_PIXEL&&(e/=o.devicePixelRatio),t.deltaMode===window.WheelEvent.DOM_DELTA_LINE&&(e*=40)):"mousewheel"===t.type&&(e=-t.wheelDeltaY,u&&(e/=3));var r=o.now(),n=r-(this._time||0);this._pos=i.mousePos(this._el,t),this._time=r,0!==e&&e%4.000244140625===0?(this._type="wheel",e=Math.floor(e/4)):0!==e&&Math.abs(e)<4?this._type="trackpad":n>400?(this._type=null,this._lastValue=e,this._timeout=setTimeout(this._onTimeout,40)):this._type||(this._type=Math.abs(n*e)<200?"trackpad":"wheel",this._timeout&&(clearTimeout(this._timeout),this._timeout=null,e+=this._lastValue)),t.shiftKey&&e&&(e/=4),this._type&&this._zoom(-e,t),t.preventDefault()},_onTimeout:function(){this._type="wheel",this._zoom(-this._lastValue)},_zoom:function(t,e){if(0!==t){var r=this._map,n=2/(1+Math.exp(-Math.abs(t/100)));t<0&&0!==n&&(n=1/n);var i=r.ease?r.ease.to:r.transform.scale,o=r.transform.scaleZoom(i*n);r.zoomTo(o,{duration:0,around:r.unproject(this._pos),delayEndEvents:200},{originalEvent:e})}}}},{"../../util/browser":348,"../../util/dom":351,"../../util/util":362}],341:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer(),o.bindHandlers(this)}var i=t("../../util/dom"),o=t("../../util/util");e.exports=n;var a=.15,s=o.bezier(0,0,a,1),l=12,u=2.5,c=.15,h=4;n.prototype={_enabled:!1,isEnabled:function(){return this._enabled},enable:function(){this.isEnabled()||(this._el.addEventListener("touchstart",this._onStart,!1),this._enabled=!0)},disable:function(){this.isEnabled()&&(this._el.removeEventListener("touchstart",this._onStart),this._enabled=!1)},disableRotation:function(){this._rotationDisabled=!0},enableRotation:function(){this._rotationDisabled=!1},_onStart:function(t){if(2===t.touches.length){var e=i.mousePos(this._el,t.touches[0]),r=i.mousePos(this._el,t.touches[1]);this._startVec=e.sub(r),this._startScale=this._map.transform.scale,this._startBearing=this._map.transform.bearing,this._gestureIntent=void 0,this._inertia=[],document.addEventListener("touchmove",this._onMove,!1),document.addEventListener("touchend",this._onEnd,!1)}},_onMove:function(t){if(2===t.touches.length){var e=i.mousePos(this._el,t.touches[0]),r=i.mousePos(this._el,t.touches[1]),n=e.add(r).div(2),o=e.sub(r),a=o.mag()/this._startVec.mag(),s=this._rotationDisabled?0:180*o.angleWith(this._startVec)/Math.PI,l=this._map;
++if(this._gestureIntent){var u={duration:0,around:l.unproject(n)};"rotate"===this._gestureIntent&&(u.bearing=this._startBearing+s),"zoom"!==this._gestureIntent&&"rotate"!==this._gestureIntent||(u.zoom=l.transform.scaleZoom(this._startScale*a)),l.stop(),this._drainInertiaBuffer(),this._inertia.push([Date.now(),a,n]),l.easeTo(u,{originalEvent:t})}else{var f=Math.abs(1-a)>c,d=Math.abs(s)>h;d?this._gestureIntent="rotate":f&&(this._gestureIntent="zoom"),this._gestureIntent&&(this._startVec=o,this._startScale=l.transform.scale,this._startBearing=l.transform.bearing)}t.preventDefault()}},_onEnd:function(t){document.removeEventListener("touchmove",this._onMove),document.removeEventListener("touchend",this._onEnd),this._drainInertiaBuffer();var e=this._inertia,r=this._map;if(e.length<2)return void r.snapToNorth({},{originalEvent:t});var n=e[e.length-1],i=e[0],o=r.transform.scaleZoom(this._startScale*n[1]),c=r.transform.scaleZoom(this._startScale*i[1]),h=o-c,f=(n[0]-i[0])/1e3,d=n[2];if(0===f||o===c)return void r.snapToNorth({},{originalEvent:t});var p=h*a/f;Math.abs(p)>u&&(p=p>0?u:-u);var g=1e3*Math.abs(p/(l*a)),m=o+p*g/2e3;m<0&&(m=0),r.easeTo({zoom:m,duration:g,easing:s,around:r.unproject(d)},{originalEvent:t})},_drainInertiaBuffer:function(){for(var t=this._inertia,e=Date.now(),r=160;t.length>2&&e-t[0][0]>r;)t.shift()}}},{"../../util/dom":351,"../../util/util":362}],342:[function(t,e,r){"use strict";function n(){i.bindAll(["_onHashChange","_updateHash"],this)}e.exports=n;var i=t("../util/util");n.prototype={addTo:function(t){return this._map=t,window.addEventListener("hashchange",this._onHashChange,!1),this._map.on("moveend",this._updateHash),this},remove:function(){return window.removeEventListener("hashchange",this._onHashChange,!1),this._map.off("moveend",this._updateHash),delete this._map,this},_onHashChange:function(){var t=location.hash.replace("#","").split("/");return t.length>=3&&(this._map.jumpTo({center:[+t[2],+t[1]],zoom:+t[0],bearing:+(t[3]||0)}),!0)},_updateHash:function(){var t=this._map.getCenter(),e=this._map.getZoom(),r=this._map.getBearing(),n=Math.max(0,Math.ceil(Math.log(e)/Math.LN2)),i="#"+Math.round(100*e)/100+"/"+t.lat.toFixed(n)+"/"+t.lng.toFixed(n)+(r?"/"+Math.round(10*r)/10:"");window.history.replaceState("","",i)}}},{"../util/util":362}],343:[function(t,e,r){"use strict";function n(t){this._map=t,this._el=t.getCanvasContainer();for(var e in i)t[e]=new i[e](t);a.bindHandlers(this)}var i={scrollZoom:t("./handler/scroll_zoom"),boxZoom:t("./handler/box_zoom"),dragRotate:t("./handler/drag_rotate"),dragPan:t("./handler/drag_pan"),keyboard:t("./handler/keyboard"),doubleClickZoom:t("./handler/dblclick_zoom"),touchZoomRotate:t("./handler/touch_zoom_rotate")},o=t("../util/dom"),a=t("../util/util"),s=t("point-geometry");e.exports=n,n.prototype={enable:function(){var t=this._map.options,e=this._el;for(var r in i)t[r]&&this._map[r].enable();e.addEventListener("mousedown",this._onMouseDown,!1),e.addEventListener("mouseup",this._onMouseUp,!1),e.addEventListener("mousemove",this._onMouseMove,!1),e.addEventListener("touchstart",this._onTouchStart,!1),e.addEventListener("touchend",this._onTouchEnd,!1),e.addEventListener("touchmove",this._onTouchMove,!1),e.addEventListener("touchcancel",this._onTouchCancel,!1),e.addEventListener("click",this._onClick,!1),e.addEventListener("dblclick",this._onDblClick,!1),e.addEventListener("contextmenu",this._onContextMenu,!1)},disable:function(){var t=this._map.options,e=this._el;for(var r in i)t[r]&&this._map[r].disable();e.removeEventListener("mousedown",this._onMouseDown),e.removeEventListener("mouseup",this._onMouseUp),e.removeEventListener("mousemove",this._onMouseMove),e.removeEventListener("touchstart",this._onTouchStart),e.removeEventListener("touchend",this._onTouchEnd),e.removeEventListener("touchmove",this._onTouchMove),e.removeEventListener("touchcancel",this._onTouchCancel),e.removeEventListener("click",this._onClick),e.removeEventListener("dblclick",this._onDblClick),e.removeEventListener("contextmenu",this._onContextMenu)},_onMouseDown:function(t){this._map.stop(),this._startPos=o.mousePos(this._el,t),this._fireMouseEvent("mousedown",t)},_onMouseUp:function(t){var e=this._map,r=e.dragRotate&&e.dragRotate.isActive();this._contextMenuEvent&&!r&&this._fireMouseEvent("contextmenu",this._contextMenuEvent),this._contextMenuEvent=null,this._fireMouseEvent("mouseup",t)},_onMouseMove:function(t){var e=this._map,r=this._el;if(!(e.dragPan&&e.dragPan.isActive()||e.dragRotate&&e.dragRotate.isActive())){for(var n=t.toElement||t.target;n&&n!==r;)n=n.parentNode;n===r&&this._fireMouseEvent("mousemove",t)}},_onTouchStart:function(t){this._map.stop(),this._fireTouchEvent("touchstart",t),!t.touches||t.touches.length>1||(this._tapped?(clearTimeout(this._tapped),this._tapped=null,this._fireMouseEvent("dblclick",t)):this._tapped=setTimeout(this._onTouchTimeout,300))},_onTouchMove:function(t){this._fireTouchEvent("touchmove",t)},_onTouchEnd:function(t){this._fireTouchEvent("touchend",t)},_onTouchCancel:function(t){this._fireTouchEvent("touchcancel",t)},_onTouchTimeout:function(){this._tapped=null},_onClick:function(t){var e=o.mousePos(this._el,t);e.equals(this._startPos)&&this._fireMouseEvent("click",t)},_onDblClick:function(t){this._fireMouseEvent("dblclick",t),t.preventDefault()},_onContextMenu:function(t){this._contextMenuEvent=t,t.preventDefault()},_fireMouseEvent:function(t,e){var r=o.mousePos(this._el,e);return this._map.fire(t,{lngLat:this._map.unproject(r),point:r,originalEvent:e})},_fireTouchEvent:function(t,e){var r=o.touchPos(this._el,e),n=r.reduce(function(t,e,r,n){return t.add(e.div(n.length))},new s(0,0));return this._map.fire(t,{lngLat:this._map.unproject(n),point:n,lngLats:r.map(function(t){return this._map.unproject(t)},this),points:r,originalEvent:e})}}},{"../util/dom":351,"../util/util":362,"./handler/box_zoom":335,"./handler/dblclick_zoom":336,"./handler/drag_pan":337,"./handler/drag_rotate":338,"./handler/keyboard":339,"./handler/scroll_zoom":340,"./handler/touch_zoom_rotate":341,"point-geometry":400}],344:[function(t,e,r){"use strict";function n(t){t.parentNode&&t.parentNode.removeChild(t)}var i=t("../util/canvas"),o=t("../util/util"),a=t("../util/browser"),s=t("../util/evented"),l=t("../util/dom"),u=t("../style/style"),c=t("../style/animation_loop"),h=t("../render/painter"),f=t("../geo/transform"),d=t("./hash"),p=t("./interaction"),g=t("./camera"),m=t("../geo/lng_lat"),v=t("../geo/lng_lat_bounds"),y=t("point-geometry"),b=t("./control/attribution"),x=0,_=20,w=e.exports=function(t){t=o.inherit(this.options,t),this._interactive=t.interactive,this._failIfMajorPerformanceCaveat=t.failIfMajorPerformanceCaveat,this._preserveDrawingBuffer=t.preserveDrawingBuffer,"string"==typeof t.container?this._container=document.getElementById(t.container):this._container=t.container,this.animationLoop=new c,this.transform=new f(t.minZoom,t.maxZoom),t.maxBounds&&this.setMaxBounds(t.maxBounds),o.bindAll(["_forwardStyleEvent","_forwardSourceEvent","_forwardLayerEvent","_forwardTileEvent","_onStyleLoad","_onStyleChange","_onSourceAdd","_onSourceRemove","_onSourceUpdate","_onWindowResize","onError","_update","_render"],this),this._setupContainer(),this._setupPainter(),this.on("move",this._update.bind(this,!1)),this.on("zoom",this._update.bind(this,!0)),this.on("moveend",function(){this.animationLoop.set(300),this._rerender()}.bind(this)),"undefined"!=typeof window&&window.addEventListener("resize",this._onWindowResize,!1),this.interaction=new p(this),t.interactive&&this.interaction.enable(),this._hash=t.hash&&(new d).addTo(this),this._hash&&this._hash._onHashChange()||this.jumpTo(t),this.stacks={},this._classes=[],this.resize(),t.classes&&this.setClasses(t.classes),t.style&&this.setStyle(t.style),t.attributionControl&&this.addControl(new b(t.attributionControl)),this.on("style.error",this.onError),this.on("source.error",this.onError),this.on("tile.error",this.onError),this.on("layer.error",this.onError)};o.extend(w.prototype,s),o.extend(w.prototype,g.prototype),o.extend(w.prototype,{options:{center:[0,0],zoom:0,bearing:0,pitch:0,minZoom:x,maxZoom:_,interactive:!0,scrollZoom:!0,boxZoom:!0,dragRotate:!0,dragPan:!0,keyboard:!0,doubleClickZoom:!0,touchZoomRotate:!0,bearingSnap:7,hash:!1,attributionControl:!0,failIfMajorPerformanceCaveat:!1,preserveDrawingBuffer:!1},addControl:function(t){return t.addTo(this),this},addClass:function(t,e){return this._classes.indexOf(t)>=0||""===t?this:(this._classes.push(t),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0))},removeClass:function(t,e){var r=this._classes.indexOf(t);return r<0||""===t?this:(this._classes.splice(r,1),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0))},setClasses:function(t,e){for(var r={},n=0;n<t.length;n++)""!==t[n]&&(r[t[n]]=!0);return this._classes=Object.keys(r),this._classOptions=e,this.style&&this.style.updateClasses(),this._update(!0)},hasClass:function(t){return this._classes.indexOf(t)>=0},getClasses:function(){return this._classes},resize:function(){var t=0,e=0;return this._container&&(t=this._container.offsetWidth||400,e=this._container.offsetHeight||300),this._canvas.resize(t,e),this.transform.resize(t,e),this.painter.resize(t,e),this.fire("movestart").fire("move").fire("resize").fire("moveend")},getBounds:function(){var t=new v(this.transform.pointLocation(new y(0,0)),this.transform.pointLocation(this.transform.size));return(this.transform.angle||this.transform.pitch)&&(t.extend(this.transform.pointLocation(new y(this.transform.size.x,0))),t.extend(this.transform.pointLocation(new y(0,this.transform.size.y)))),t},setMaxBounds:function(t){if(t){var e=v.convert(t);this.transform.lngRange=[e.getWest(),e.getEast()],this.transform.latRange=[e.getSouth(),e.getNorth()],this.transform._constrain(),this._update()}else null!==t&&void 0!==t||(this.transform.lngRange=[],this.transform.latRange=[],this._update());return this},setMinZoom:function(t){if(t=null===t||void 0===t?x:t,t>=x&&t<=this.transform.maxZoom)return this.transform.minZoom=t,this._update(),this.getZoom()<t&&this.setZoom(t),this;throw new Error("minZoom must be between "+x+" and the current maxZoom, inclusive")},setMaxZoom:function(t){if(t=null===t||void 0===t?_:t,t>=this.transform.minZoom&&t<=_)return this.transform.maxZoom=t,this._update(),this.getZoom()>t&&this.setZoom(t),this;throw new Error("maxZoom must be between the current minZoom and "+_+", inclusive")},project:function(t){return this.transform.locationPoint(m.convert(t))},unproject:function(t){return this.transform.pointLocation(y.convert(t))},queryRenderedFeatures:function(t,e){t instanceof y||Array.isArray(t)||(e=t,t=void 0);var r=this._makeQueryGeometry(t);return this.style.queryRenderedFeatures(r,e,this.transform.zoom,this.transform.angle)},_makeQueryGeometry:function(t){void 0===t&&(t=[y.convert([0,0]),y.convert([this.transform.width,this.transform.height])]);var e,r=t instanceof y||"number"==typeof t[0];if(r){var n=y.convert(t);e=[n]}else{var i=[y.convert(t[0]),y.convert(t[1])];e=[i[0],new y(i[1].x,i[0].y),i[1],new y(i[0].x,i[1].y),i[0]]}return e=e.map(function(t){return this.transform.pointCoordinate(t)}.bind(this))},querySourceFeatures:function(t,e){return this.style.querySourceFeatures(t,e)},setStyle:function(t){return this.style&&(this.style.off("load",this._onStyleLoad).off("error",this._forwardStyleEvent).off("change",this._onStyleChange).off("source.add",this._onSourceAdd).off("source.remove",this._onSourceRemove).off("source.load",this._onSourceUpdate).off("source.error",this._forwardSourceEvent).off("source.change",this._onSourceUpdate).off("layer.add",this._forwardLayerEvent).off("layer.remove",this._forwardLayerEvent).off("layer.error",this._forwardLayerEvent).off("tile.add",this._forwardTileEvent).off("tile.remove",this._forwardTileEvent).off("tile.load",this._update).off("tile.error",this._forwardTileEvent).off("tile.stats",this._forwardTileEvent)._remove(),this.off("rotate",this.style._redoPlacement),this.off("pitch",this.style._redoPlacement)),t?(t instanceof u?this.style=t:this.style=new u(t,this.animationLoop),this.style.on("load",this._onStyleLoad).on("error",this._forwardStyleEvent).on("change",this._onStyleChange).on("source.add",this._onSourceAdd).on("source.remove",this._onSourceRemove).on("source.load",this._onSourceUpdate).on("source.error",this._forwardSourceEvent).on("source.change",this._onSourceUpdate).on("layer.add",this._forwardLayerEvent).on("layer.remove",this._forwardLayerEvent).on("layer.error",this._forwardLayerEvent).on("tile.add",this._forwardTileEvent).on("tile.remove",this._forwardTileEvent).on("tile.load",this._update).on("tile.error",this._forwardTileEvent).on("tile.stats",this._forwardTileEvent),this.on("rotate",this.style._redoPlacement),this.on("pitch",this.style._redoPlacement),this):(this.style=null,this)},getStyle:function(){return this.style.serialize()},addSource:function(t,e){return this.style.addSource(t,e),this._update(!0),this},removeSource:function(t){return this.style.removeSource(t),this._update(!0),this},getSource:function(t){return this.style.getSource(t)},addLayer:function(t,e){return this.style.addLayer(t,e),this._update(!0),this},removeLayer:function(t){return this.style.removeLayer(t),this._update(!0),this},getLayer:function(t){return this.style.getLayer(t)},setFilter:function(t,e){return this.style.setFilter(t,e),this._update(!0),this},setLayerZoomRange:function(t,e,r){return this.style.setLayerZoomRange(t,e,r),this._update(!0),this},getFilter:function(t){return this.style.getFilter(t)},setPaintProperty:function(t,e,r,n){return this.style.setPaintProperty(t,e,r,n),this._update(!0),this},getPaintProperty:function(t,e,r){return this.style.getPaintProperty(t,e,r)},setLayoutProperty:function(t,e,r){return this.style.setLayoutProperty(t,e,r),this._update(!0),this},getLayoutProperty:function(t,e){return this.style.getLayoutProperty(t,e)},getContainer:function(){return this._container},getCanvasContainer:function(){return this._canvasContainer},getCanvas:function(){return this._canvas.getElement()},_setupContainer:function(){var t=this._container;t.classList.add("mapboxgl-map");var e=this._canvasContainer=l.create("div","mapboxgl-canvas-container",t);this._interactive&&e.classList.add("mapboxgl-interactive"),this._canvas=new i(this,e);var r=this._controlContainer=l.create("div","mapboxgl-control-container",t),n=this._controlCorners={};["top-left","top-right","bottom-left","bottom-right"].forEach(function(t){n[t]=l.create("div","mapboxgl-ctrl-"+t,r)})},_setupPainter:function(){var t=this._canvas.getWebGLContext({failIfMajorPerformanceCaveat:this._failIfMajorPerformanceCaveat,preserveDrawingBuffer:this._preserveDrawingBuffer});return t?void(this.painter=new h(t,this.transform)):void console.error("Failed to initialize WebGL")},_contextLost:function(t){t.preventDefault(),this._frameId&&a.cancelFrame(this._frameId),this.fire("webglcontextlost",{originalEvent:t})},_contextRestored:function(t){this._setupPainter(),this.resize(),this._update(),this.fire("webglcontextrestored",{originalEvent:t})},loaded:function(){return!this._styleDirty&&!this._sourcesDirty&&!(!this.style||!this.style.loaded())},_update:function(t){return this.style?(this._styleDirty=this._styleDirty||t,this._sourcesDirty=!0,this._rerender(),this):this},_render:function(){return this.style&&this._styleDirty&&(this._styleDirty=!1,this.style.update(this._classes,this._classOptions),this._classOptions=null,this.style._recalculate(this.transform.zoom)),this.style&&this._sourcesDirty&&(this._sourcesDirty=!1,this.style._updateSources(this.transform)),this.painter.render(this.style,{debug:this.showTileBoundaries,showOverdrawInspector:this._showOverdrawInspector,vertices:this.vertices,rotating:this.rotating,zooming:this.zooming}),this.fire("render"),this.loaded()&&!this._loaded&&(this._loaded=!0,this.fire("load")),this._frameId=null,this.animationLoop.stopped()||(this._styleDirty=!0),(this._sourcesDirty||this._repaint||!this.animationLoop.stopped())&&this._rerender(),this},remove:function(){this._hash&&this._hash.remove(),a.cancelFrame(this._frameId),this.setStyle(null),"undefined"!=typeof window&&window.removeEventListener("resize",this._onWindowResize,!1),n(this._canvasContainer),n(this._controlContainer),this._container.classList.remove("mapboxgl-map")},onError:function(t){console.error(t.error)},_rerender:function(){this.style&&!this._frameId&&(this._frameId=a.frame(this._render))},_forwardStyleEvent:function(t){this.fire("style."+t.type,o.extend({style:t.target},t))},_forwardSourceEvent:function(t){this.fire(t.type,o.extend({style:t.target},t))},_forwardLayerEvent:function(t){this.fire(t.type,o.extend({style:t.target},t))},_forwardTileEvent:function(t){this.fire(t.type,o.extend({style:t.target},t))},_onStyleLoad:function(t){this.transform.unmodified&&this.jumpTo(this.style.stylesheet),this.style.update(this._classes,{transition:!1}),this._forwardStyleEvent(t)},_onStyleChange:function(t){this._update(!0),this._forwardStyleEvent(t)},_onSourceAdd:function(t){var e=t.source;e.onAdd&&e.onAdd(this),this._forwardSourceEvent(t)},_onSourceRemove:function(t){var e=t.source;e.onRemove&&e.onRemove(this),this._forwardSourceEvent(t)},_onSourceUpdate:function(t){this._update(),this._forwardSourceEvent(t)},_onWindowResize:function(){this.stop().resize()._update()}}),o.extendAll(w.prototype,{_showTileBoundaries:!1,get showTileBoundaries(){return this._showTileBoundaries},set showTileBoundaries(t){this._showTileBoundaries!==t&&(this._showTileBoundaries=t,this._update())},_showCollisionBoxes:!1,get showCollisionBoxes(){return this._showCollisionBoxes},set showCollisionBoxes(t){this._showCollisionBoxes!==t&&(this._showCollisionBoxes=t,this.style._redoPlacement())},_showOverdrawInspector:!1,get showOverdrawInspector(){return this._showOverdrawInspector},set showOverdrawInspector(t){this._showOverdrawInspector!==t&&(this._showOverdrawInspector=t,this._update())},_repaint:!1,get repaint(){return this._repaint},set repaint(t){this._repaint=t,this._update()},_vertices:!1,get vertices(){return this._vertices},set vertices(t){this._vertices=t,this._update()}})},{"../geo/lng_lat":269,"../geo/lng_lat_bounds":270,"../geo/transform":271,"../render/painter":284,"../style/animation_loop":300,"../style/style":303,"../util/browser":348,"../util/canvas":349,"../util/dom":351,"../util/evented":354,"../util/util":362,"./camera":330,"./control/attribution":331,"./hash":342,"./interaction":343,"point-geometry":400}],345:[function(t,e,r){"use strict";function n(t){i.setOptions(this,t),i.bindAll(["_update","_onClickClose"],this)}e.exports=n;var i=t("../util/util"),o=t("../util/evented"),a=t("../util/dom"),s=t("../geo/lng_lat");n.prototype=i.inherit(o,{options:{closeButton:!0,closeOnClick:!0},addTo:function(t){return this._map=t,this._map.on("move",this._update),this.options.closeOnClick&&this._map.on("click",this._onClickClose),this._update(),this},remove:function(){return this._content&&this._content.parentNode&&this._content.parentNode.removeChild(this._content),this._container&&(this._container.parentNode.removeChild(this._container),delete this._container),this._map&&(this._map.off("move",this._update),this._map.off("click",this._onClickClose),delete this._map),this},getLngLat:function(){return this._lngLat},setLngLat:function(t){return this._lngLat=s.convert(t),this._update(),this},setText:function(t){return this.setDOMContent(document.createTextNode(t))},setHTML:function(t){var e,r=document.createDocumentFragment(),n=document.createElement("body");for(n.innerHTML=t;;){if(e=n.firstChild,!e)break;r.appendChild(e)}return this.setDOMContent(r)},setDOMContent:function(t){return this._createContent(),this._content.appendChild(t),this._update(),this},_createContent:function(){this._content&&this._content.parentNode&&this._content.parentNode.removeChild(this._content),this._content=a.create("div","mapboxgl-popup-content",this._container),this.options.closeButton&&(this._closeButton=a.create("button","mapboxgl-popup-close-button",this._content),this._closeButton.innerHTML="&#215;",this._closeButton.addEventListener("click",this._onClickClose))},_update:function(){if(this._map&&this._lngLat&&this._content){this._container||(this._container=a.create("div","mapboxgl-popup",this._map.getContainer()),this._tip=a.create("div","mapboxgl-popup-tip",this._container),this._container.appendChild(this._content));var t=this._map.project(this._lngLat).round(),e=this.options.anchor;if(!e){var r=this._container.offsetWidth,n=this._container.offsetHeight;e=t.y<n?["top"]:t.y>this._map.transform.height-n?["bottom"]:[],t.x<r/2?e.push("left"):t.x>this._map.transform.width-r/2&&e.push("right"),e=0===e.length?"bottom":e.join("-")}var i={top:"translate(-50%,0)","top-left":"translate(0,0)","top-right":"translate(-100%,0)",bottom:"translate(-50%,-100%)","bottom-left":"translate(0,-100%)","bottom-right":"translate(-100%,-100%)",left:"translate(0,-50%)",right:"translate(-100%,-50%)"},o=this._container.classList;for(var s in i)o.remove("mapboxgl-popup-anchor-"+s);o.add("mapboxgl-popup-anchor-"+e),a.setTransform(this._container,i[e]+" translate("+t.x+"px,"+t.y+"px)")}},_onClickClose:function(){this.remove()}})},{"../geo/lng_lat":269,"../util/dom":351,"../util/evented":354,"../util/util":362}],346:[function(t,e,r){"use strict";function n(t,e){this.target=t,this.parent=e,this.callbacks={},this.callbackID=0,this.receive=this.receive.bind(this),this.target.addEventListener("message",this.receive,!1)}e.exports=n,n.prototype.receive=function(t){var e,r=t.data;if("<response>"===r.type)e=this.callbacks[r.id],delete this.callbacks[r.id],e(r.error||null,r.data);else if("undefined"!=typeof r.id){var n=r.id;this.parent[r.type](r.data,function(t,e,r){this.postMessage({type:"<response>",id:String(n),error:t?String(t):null,data:e},r)}.bind(this))}else this.parent[r.type](r.data)},n.prototype.send=function(t,e,r,n){var i=null;r&&(this.callbacks[i=this.callbackID++]=r),this.postMessage({type:t,id:String(i),data:e},n)},n.prototype.postMessage=function(t,e){this.target.postMessage(t,e)}},{}],347:[function(t,e,r){"use strict";function n(t){var e=document.createElement("a");return e.href=t,e.protocol===document.location.protocol&&e.host===document.location.host}r.getJSON=function(t,e){var r=new XMLHttpRequest;return r.open("GET",t,!0),r.setRequestHeader("Accept","application/json"),r.onerror=function(t){e(t)},r.onload=function(){if(r.status>=200&&r.status<300&&r.response){var t;try{t=JSON.parse(r.response)}catch(t){return e(t)}e(null,t)}else e(new Error(r.statusText))},r.send(),r},r.getArrayBuffer=function(t,e){var r=new XMLHttpRequest;return r.open("GET",t,!0),r.responseType="arraybuffer",r.onerror=function(t){e(t)},r.onload=function(){r.status>=200&&r.status<300&&r.response?e(null,r.response):e(new Error(r.statusText))},r.send(),r},r.getImage=function(t,e){return r.getArrayBuffer(t,function(t,r){if(t)return e(t);var n=new Image;n.onload=function(){e(null,n),(window.URL||window.webkitURL).revokeObjectURL(n.src)};var i=new Blob([new Uint8Array(r)],{type:"image/png"});return n.src=(window.URL||window.webkitURL).createObjectURL(i),n.getData=function(){var t=document.createElement("canvas"),e=t.getContext("2d");return t.width=n.width,t.height=n.height,e.drawImage(n,0,0),e.getImageData(0,0,n.width,n.height).data},n})},r.getVideo=function(t,e){var r=document.createElement("video");r.onloadstart=function(){e(null,r)};for(var i=0;i<t.length;i++){var o=document.createElement("source");n(t[i])||(r.crossOrigin="Anonymous"),o.src=t[i],r.appendChild(o)}return r.getData=function(){return r},r}},{}],348:[function(t,e,r){"use strict";e.exports.now=function(){return window.performance&&window.performance.now?window.performance.now.bind(window.performance):Date.now.bind(Date)}();var n=window.requestAnimationFrame||window.mozRequestAnimationFrame||window.webkitRequestAnimationFrame||window.msRequestAnimationFrame;r.frame=function(t){return n(t)};var i=window.cancelAnimationFrame||window.mozCancelAnimationFrame||window.webkitCancelAnimationFrame||window.msCancelAnimationFrame;r.cancelFrame=function(t){i(t)},r.timed=function(t,n,i){function o(l){a||(l=e.exports.now(),l>=s+n?t.call(i,1):(t.call(i,(l-s)/n),r.frame(o)))}if(!n)return t.call(i,1),null;var a=!1,s=e.exports.now();return r.frame(o),function(){a=!0}},r.supported=t("mapbox-gl-js-supported"),r.hardwareConcurrency=navigator.hardwareConcurrency||8,Object.defineProperty(r,"devicePixelRatio",{get:function(){return window.devicePixelRatio}}),r.supportsWebp=!1;var o=document.createElement("img");o.onload=function(){r.supportsWebp=!0},o.src="data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=",r.supportsGeolocation=!!navigator.geolocation},{"mapbox-gl-js-supported":234}],349:[function(t,e,r){"use strict";function n(t,e){this.canvas=document.createElement("canvas"),t&&e&&(this.canvas.style.position="absolute",this.canvas.classList.add("mapboxgl-canvas"),this.canvas.addEventListener("webglcontextlost",t._contextLost.bind(t),!1),this.canvas.addEventListener("webglcontextrestored",t._contextRestored.bind(t),!1),this.canvas.setAttribute("tabindex",0),e.appendChild(this.canvas))}var i=t("../util"),o=t("mapbox-gl-js-supported");e.exports=n,n.prototype.resize=function(t,e){var r=window.devicePixelRatio||1;this.canvas.width=r*t,this.canvas.height=r*e,this.canvas.style.width=t+"px",this.canvas.style.height=e+"px"},n.prototype.getWebGLContext=function(t){return t=i.extend({},t,o.webGLContextAttributes),this.canvas.getContext("webgl",t)||this.canvas.getContext("experimental-webgl",t)},n.prototype.getElement=function(){return this.canvas}},{"../util":362,"mapbox-gl-js-supported":234}],350:[function(t,e,r){"use strict";function n(e,r){this.actors=[],this.currentActor=0;for(var n=0;n<e;n++){var a=new o(t("../../source/worker")),s=new i(a,r);s.name="Worker "+n,this.actors.push(s)}}var i=t("../actor"),o=t("webworkify");e.exports=n,n.prototype={broadcast:function(t,e){for(var r=0;r<this.actors.length;r++)this.actors[r].send(t,e)},send:function(t,e,r,n,i){return("number"!=typeof n||isNaN(n))&&(n=this.currentActor=(this.currentActor+1)%this.actors.length),this.actors[n].send(t,e,r,i),n},remove:function(){for(var t=0;t<this.actors.length;t++)this.actors[t].target.terminate();this.actors=[]}}},{"../../source/worker":298,"../actor":346,webworkify:469}],351:[function(t,e,r){"use strict";function n(t){for(var e=0;e<t.length;e++)if(t[e]in s)return t[e]}function i(t){t.preventDefault(),t.stopPropagation(),window.removeEventListener("click",i,!0)}var o=t("point-geometry");r.create=function(t,e,r){var n=document.createElement(t);return e&&(n.className=e),r&&r.appendChild(n),n};var a,s=document.documentElement.style,l=n(["userSelect","MozUserSelect","WebkitUserSelect","msUserSelect"]);r.disableDrag=function(){l&&(a=s[l],s[l]="none")},r.enableDrag=function(){l&&(s[l]=a)};var u=n(["transform","WebkitTransform"]);r.setTransform=function(t,e){t.style[u]=e},r.suppressClick=function(){window.addEventListener("click",i,!0),window.setTimeout(function(){window.removeEventListener("click",i,!0)},0)},r.mousePos=function(t,e){var r=t.getBoundingClientRect();return e=e.touches?e.touches[0]:e,new o(e.clientX-r.left-t.clientLeft,e.clientY-r.top-t.clientTop)},r.touchPos=function(t,e){for(var r=t.getBoundingClientRect(),n=[],i=0;i<e.touches.length;i++)n.push(new o(e.touches[i].clientX-r.left-t.clientLeft,e.touches[i].clientY-r.top-t.clientTop));return n}},{"point-geometry":400}],352:[function(t,e,r){"use strict";e.exports={API_URL:"https://api.mapbox.com",REQUIRE_ACCESS_TOKEN:!0}},{}],353:[function(t,e,r){"use strict";function n(t){this._stringToNumber={},this._numberToString=[];for(var e=0;e<t.length;e++){var r=t[e];this._stringToNumber[r]=e,this._numberToString[e]=r}}var i=t("assert");e.exports=n,n.prototype.encode=function(t){return i(t in this._stringToNumber),this._stringToNumber[t]},n.prototype.decode=function(t){return i(t<this._numberToString.length),this._numberToString[t]}},{assert:29}],354:[function(t,e,r){"use strict";var n=t("./util"),i={on:function(t,e){return this._events=this._events||{},this._events[t]=this._events[t]||[],this._events[t].push(e),this},off:function(t,e){if(!t)return delete this._events,this;if(!this.listens(t))return this;if(e){var r=this._events[t].indexOf(e);r>=0&&this._events[t].splice(r,1),this._events[t].length||delete this._events[t]}else delete this._events[t];return this},once:function(t,e){var r=function(n){this.off(t,r),e.call(this,n)}.bind(this);return this.on(t,r),this},fire:function(t,e){if(!this.listens(t))return this;e=n.extend({},e),n.extend(e,{type:t,target:this});for(var r=this._events[t].slice(),i=0;i<r.length;i++)r[i].call(this,e);return this},listens:function(t){return!(!this._events||!this._events[t])}};e.exports=i},{"./util":362}],355:[function(t,e,r){"use strict";function n(t,e){this.stacks=t.readFields(i,[],e)}function i(t,e,r){if(1===t){var n=r.readMessage(o,{glyphs:{}});e.push(n)}}function o(t,e,r){if(1===t)e.name=r.readString();else if(2===t)e.range=r.readString();else if(3===t){var n=r.readMessage(a,{});e.glyphs[n.id]=n}}function a(t,e,r){1===t?e.id=r.readVarint():2===t?e.bitmap=r.readBytes():3===t?e.width=r.readVarint():4===t?e.height=r.readVarint():5===t?e.left=r.readSVarint():6===t?e.top=r.readSVarint():7===t&&(e.advance=r.readVarint())}e.exports=n},{}],356:[function(t,e,r){"use strict";function n(t,e,r){return 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t=d.select(this);t.append("rect").call(b.fill,b.addOpacity(a,.8)),t.append("text").classed("name",!0).call(x.font,R,P),t.append("path").style("stroke-width","1px"),
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n=t("../../../components/color/attributes"),i=t("../constants"),o=t("./axis_attributes");e.exports={domain:{x:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]},y:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]}},resolution:{valType:"enumerated",values:[110,50],dflt:110,coerceNumber:!0},scope:{valType:"enumerated",values:Object.keys(i.scopeDefaults),dflt:"world"},projection:{type:{valType:"enumerated",values:Object.keys(i.projNames)},rotation:{lon:{valType:"number"},lat:{valType:"number"},roll:{valType:"number"}},parallels:{valType:"info_array",items:[{valType:"number"},{valType:"number"}]},scale:{valType:"number",min:0,max:10,dflt:1}},showcoastlines:{valType:"boolean"},coastlinecolor:{valType:"color",dflt:n.defaultLine},coastlinewidth:{valType:"number",min:0,dflt:1},showland:{valType:"boolean",dflt:!1},landcolor:{valType:"color",dflt:i.landColor},showocean:{valType:"boolean",dflt:!1},oceancolor:{valType:"color",dflt:i.waterColor},showlakes:{valType:"boolean",dflt:!1},lakecolor:{valType:"color",dflt:i.waterColor},showrivers:{valType:"boolean",dflt:!1},rivercolor:{valType:"color",dflt:i.waterColor},riverwidth:{valType:"number",min:0,dflt:1},showcountries:{valType:"boolean"},countrycolor:{valType:"color",dflt:n.defaultLine},countrywidth:{valType:"number",min:0,dflt:1},showsubunits:{valType:"boolean"},subunitcolor:{valType:"color",dflt:n.defaultLine},subunitwidth:{valType:"number",min:0,dflt:1},showframe:{valType:"boolean"},framecolor:{valType:"color",dflt:n.defaultLine},framewidth:{valType:"number",min:0,dflt:1},bgcolor:{valType:"color",dflt:n.background},lonaxis:o,lataxis:o}},{"../../../components/color/attributes":476,"../constants":604,"./axis_attributes":608}],612:[function(t,e,r){"use 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r=t.projection,n=t.zoom,o=function(){t.makeProjection(e),t.makePath(),n.scale(r.scale()),n.translate(r.translate()),i.loneUnhover(t.hoverContainer),t.render()};return o}var i=t("../cartesian/graph_interact");e.exports=n},{"../cartesian/graph_interact":592}],616:[function(t,e,r){"use strict";function n(t,e){this.element=t,this.plot=e,this.mouseListener=null,this.wheelListener=null,this.lastInputTime=Date.now(),this.lastPos=[0,0],this.boxEnabled=!1,this.boxStart=[0,0],this.boxEnd=[0,0]}function i(t){var e=t.mouseContainer,r=t.glplot,i=new n(e,r);return i.mouseListener=o(e,function(e,n,o){function a(e,r,n){var o=Math.min(r,n),a=Math.max(r,n);o!==a?(e[0]=o,e[1]=a,i.dataBox=e):(t.selectBox.selectBox=[0,0,1,1],t.glplot.setDirty())}var s=t.xaxis.range,l=t.yaxis.range,u=r.viewBox,c=i.lastPos[0],h=i.lastPos[1];switch(n*=r.pixelRatio,o*=r.pixelRatio,o=u[3]-u[1]-o,t.fullLayout.dragmode){case"zoom":if(e){var f=n/(u[2]-u[0])*(s[1]-s[0])+s[0],d=o/(u[3]-u[1])*(l[1]-l[0])+l[0];i.boxEnabled||(i.boxStart[0]=f,i.boxStart[1]=d),i.boxEnd[0]=f,i.boxEnd[1]=d,i.boxEnabled=!0}else i.boxEnabled&&(a(s,i.boxStart[0],i.boxEnd[0]),a(l,i.boxStart[1],i.boxEnd[1]),i.boxEnabled=!1);break;case"pan":if(i.boxEnabled=!1,e){var p=(c-n)*(s[1]-s[0])/(r.viewBox[2]-r.viewBox[0]),g=(h-o)*(l[1]-l[0])/(r.viewBox[3]-r.viewBox[1]);s[0]+=p,s[1]+=p,l[0]+=g,l[1]+=g,i.lastInputTime=Date.now(),t.cameraChanged()}}i.lastPos[0]=n,i.lastPos[1]=o}),i.wheelListener=a(e,function(e,n){var o=t.xaxis.range,a=t.yaxis.range,s=r.viewBox,l=i.lastPos[0],u=i.lastPos[1];switch(t.fullLayout.dragmode){case"zoom":break;case"pan":var c=Math.exp(.1*n/(s[3]-s[1])),h=l/(s[2]-s[0])*(o[1]-o[0])+o[0],f=u/(s[3]-s[1])*(a[1]-a[0])+a[0];o[0]=(o[0]-h)*c+h,o[1]=(o[1]-h)*c+h,a[0]=(a[0]-f)*c+f,a[1]=(a[1]-f)*c+f,i.lastInputTime=Date.now(),t.cameraChanged()}return!0}),i}var o=t("mouse-change"),a=t("mouse-wheel");e.exports=i},{"mouse-change":371,"mouse-wheel":373}],617:[function(t,e,r){"use strict";function n(t){this.scene=t,this.gl=t.gl,this.pixelRatio=t.pixelRatio,this.screenBox=[0,0,1,1],this.viewBox=[0,0,1,1],this.dataBox=[-1,-1,1,1],this.borderLineEnable=[!1,!1,!1,!1],this.borderLineWidth=[1,1,1,1],this.borderLineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.ticks=[[],[]],this.tickEnable=[!0,!0,!1,!1],this.tickPad=[15,15,15,15],this.tickAngle=[0,0,0,0],this.tickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.tickMarkLength=[0,0,0,0],this.tickMarkWidth=[0,0,0,0],this.tickMarkColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.labels=["x","y"],this.labelEnable=[!0,!0,!1,!1],this.labelAngle=[0,Math.PI/2,0,3*Math.PI/2],this.labelPad=[15,15,15,15],this.labelSize=[12,12],this.labelFont=["sans-serif","sans-serif"],this.labelColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.title="",this.titleEnable=!0,this.titleCenter=[0,0,0,0],this.titleAngle=0,this.titleColor=[0,0,0,1],this.titleFont="sans-serif",this.titleSize=18,this.gridLineEnable=[!0,!0],this.gridLineColor=[[0,0,0,.5],[0,0,0,.5]],this.gridLineWidth=[1,1],this.zeroLineEnable=[!0,!0],this.zeroLineWidth=[1,1],this.zeroLineColor=[[0,0,0,1],[0,0,0,1]],this.borderColor=[0,0,0,0],this.backgroundColor=[0,0,0,0]}function i(t){return new n(t)}var o=t("../../plotly"),a=t("../../lib/html2unicode"),s=t("../../lib/str2rgbarray"),l=n.prototype,u=["xaxis","yaxis"];l.merge=function(t){this.titleEnable=!1,this.backgroundColor=s(t.plot_bgcolor);var e,r,n,i,o,l,c,h,f,d,p;for(d=0;d<2;++d){for(e=u[d],r=t[this.scene[e]._name],n=/Click to enter .+ title/.test(r.title)?"":r.title,p=0;p<=2;p+=2)this.labelEnable[d+p]=!1,this.labels[d+p]=a(n),this.labelColor[d+p]=s(r.titlefont.color),this.labelFont[d+p]=r.titlefont.family,this.labelSize[d+p]=r.titlefont.size,this.labelPad[d+p]=this.getLabelPad(e,r),this.tickEnable[d+p]=!1,this.tickColor[d+p]=s((r.tickfont||{}).color),this.tickAngle[d+p]="auto"===r.tickangle?0:Math.PI*-r.tickangle/180,this.tickPad[d+p]=this.getTickPad(r),this.tickMarkLength[d+p]=0,this.tickMarkWidth[d+p]=r.tickwidth||0,this.tickMarkColor[d+p]=s(r.tickcolor),this.borderLineEnable[d+p]=!1,this.borderLineColor[d+p]=s(r.linecolor),this.borderLineWidth[d+p]=r.linewidth||0;c=this.hasSharedAxis(r),o=this.hasAxisInDfltPos(e,r)&&!c,l=this.hasAxisInAltrPos(e,r)&&!c,i=r.mirror||!1,h=c?String(i).indexOf("all")!==-1:!!i,f=c?"allticks"===i:String(i).indexOf("ticks")!==-1,o?this.labelEnable[d]=!0:l&&(this.labelEnable[d+2]=!0),o?this.tickEnable[d]=r.showticklabels:l&&(this.tickEnable[d+2]=r.showticklabels),(o||h)&&(this.borderLineEnable[d]=r.showline),(l||h)&&(this.borderLineEnable[d+2]=r.showline),(o||f)&&(this.tickMarkLength[d]=this.getTickMarkLength(r)),(l||f)&&(this.tickMarkLength[d+2]=this.getTickMarkLength(r)),this.gridLineEnable[d]=r.showgrid,this.gridLineColor[d]=s(r.gridcolor),this.gridLineWidth[d]=r.gridwidth,this.zeroLineEnable[d]=r.zeroline,this.zeroLineColor[d]=s(r.zerolinecolor),this.zeroLineWidth[d]=r.zerolinewidth}},l.hasSharedAxis=function(t){var e=this.scene,r=o.Plots.getSubplotIds(e.fullLayout,"gl2d"),n=o.Axes.findSubplotsWithAxis(r,t);return 0!==n.indexOf(e.id)},l.hasAxisInDfltPos=function(t,e){var r=e.side;return"xaxis"===t?"bottom"===r:"yaxis"===t?"left"===r:void 0},l.hasAxisInAltrPos=function(t,e){var r=e.side;return"xaxis"===t?"top"===r:"yaxis"===t?"right"===r:void 0},l.getLabelPad=function(t,e){var r=1.5,n=e.titlefont.size,i=e.showticklabels;return"xaxis"===t?"top"===e.side?-10+n*(r+(i?1:0)):-10+n*(r+(i?.5:0)):"yaxis"===t?"right"===e.side?10+n*(r+(i?1:.5)):10+n*(r+(i?.5:0)):void 0},l.getTickPad=function(t){return"outside"===t.ticks?10+t.ticklen:15},l.getTickMarkLength=function(t){if(!t.ticks)return 0;var e=t.ticklen;return"inside"===t.ticks?-e:e},e.exports=i},{"../../lib/html2unicode":560,"../../lib/str2rgbarray":573,"../../plotly":582}],618:[function(t,e,r){"use strict";var n=t("./scene2d"),i=t("../plots"),o=t("../../constants/xmlns_namespaces");r.name="gl2d",r.attr=["xaxis","yaxis"],r.idRoot=["x","y"],r.idRegex={x:/^x([2-9]|[1-9][0-9]+)?$/,y:/^y([2-9]|[1-9][0-9]+)?$/},r.attrRegex={x:/^xaxis([2-9]|[1-9][0-9]+)?$/,y:/^yaxis([2-9]|[1-9][0-9]+)?$/},r.attributes=t("../cartesian/attributes"),r.plot=function(t){for(var e=t._fullLayout,r=t._fullData,o=i.getSubplotIds(e,"gl2d"),a=0;a<o.length;a++){var s=o[a],l=e._plots[s],u=i.getSubplotData(r,"gl2d",s),c=l._scene2d;void 0===c&&(c=new n({id:s,graphDiv:t,container:t.querySelector(".gl-container"),staticPlot:t._context.staticPlot,plotGlPixelRatio:t._context.plotGlPixelRatio},e),l._scene2d=c),c.plot(u,t.calcdata,e,t.layout)}},r.clean=function(t,e,r,n){for(var o=i.getSubplotIds(n,"gl2d"),a=0;a<o.length;a++){var s=o[a],l=n._plots[s];if(l._scene2d){var u=i.getSubplotData(t,"gl2d",s);0===u.length&&(l._scene2d.destroy(),delete n._plots[s])}}},r.toSVG=function(t){for(var e=t._fullLayout,r=i.getSubplotIds(e,"gl2d"),n=0;n<r.length;n++){var a=e._plots[r[n]],s=a._scene2d,l=s.toImage("png"),u=e._glimages.append("svg:image");u.attr({xmlns:o.svg,"xlink:href":l,x:0,y:0,width:"100%",height:"100%",preserveAspectRatio:"none"}),s.destroy()}}},{"../../constants/xmlns_namespaces":549,"../cartesian/attributes":584,"../plots":641,"./scene2d":619}],619:[function(t,e,r){"use strict";function n(t,e){this.container=t.container,this.graphDiv=t.graphDiv,this.pixelRatio=t.plotGlPixelRatio||window.devicePixelRatio,this.id=t.id,this.staticPlot=!!t.staticPlot,this.fullLayout=e,this.updateAxes(e),this.makeFramework(),this.glplotOptions=f(this),this.glplotOptions.merge(e),this.glplot=u(this.glplotOptions),this.camera=d(this),this.traces={},this.spikes=c(this.glplot),this.selectBox=h(this.glplot,{innerFill:!1,outerFill:!0}),this.pickResult=null,this.bounds=[1/0,1/0,-(1/0),-(1/0)],this.stopped=!1,this.redraw=this.draw.bind(this),this.redraw()}function i(t,e){for(var r=0;r<2;++r){var n=t[r],i=e[r];if(n.length!==i.length)return!0;for(var o=0;o<n.length;++o)if(n[o].x!==i[o].x)return!0}return!1}var o,a,s=t("../../plots/cartesian/axes"),l=t("../../plots/cartesian/graph_interact"),u=t("gl-plot2d"),c=t("gl-spikes2d"),h=t("gl-select-box"),f=t("./convert"),d=t("./camera"),p=t("../../lib/html2unicode"),g=t("../../lib/show_no_webgl_msg"),m=["xaxis","yaxis"];e.exports=n;var v=n.prototype;v.makeFramework=function(){if(this.staticPlot){if(!a){o=document.createElement("canvas");try{a=o.getContext("webgl",{preserveDrawingBuffer:!0,premultipliedAlpha:!0,antialias:!0})}catch(t){throw new Error(["Error creating static canvas/context for image server"].join(" "))}}this.canvas=o,this.gl=a}else{var t,e=document.createElement("canvas"),r={premultipliedAlpha:!0};try{t=e.getContext("webgl",r)}catch(t){}if(!t)try{t=e.getContext("experimental-webgl",r)}catch(t){}t||g(this),this.canvas=e,this.gl=t}var n=this.canvas,i=this.pixelRatio,s=this.fullLayout;n.width=0|Math.ceil(i*s.width),n.height=0|Math.ceil(i*s.height),n.style.width="100%",n.style.height="100%",n.style.position="absolute",n.style.top="0px",n.style.left="0px",n.style["pointer-events"]="none";var l=this.svgContainer=document.createElementNS("http://www.w3.org/2000/svg","svg");l.style.position="absolute",l.style.top=l.style.left="0px",l.style.width=l.style.height="100%",l.style["z-index"]=20,l.style["pointer-events"]="none";var u=this.mouseContainer=document.createElement("div");u.style.position="absolute";var c=this.container;c.appendChild(n),c.appendChild(l),c.appendChild(u)},v.toImage=function(t){t||(t="png"),this.stopped=!0,this.staticPlot&&this.container.appendChild(o),this.glplot.setDirty(),this.glplot.draw();var e=this.glplot.gl,r=e.drawingBufferWidth,n=e.drawingBufferHeight;e.bindFramebuffer(e.FRAMEBUFFER,null);var i=new Uint8Array(r*n*4);e.readPixels(0,0,r,n,e.RGBA,e.UNSIGNED_BYTE,i);for(var a=0,s=n-1;a<s;++a,--s)for(var l=0;l<r;++l)for(var u=0;u<4;++u){var c=i[4*(r*a+l)+u];i[4*(r*a+l)+u]=i[4*(r*s+l)+u],i[4*(r*s+l)+u]=c}var h=document.createElement("canvas");h.width=r,h.height=n;var f=h.getContext("2d"),d=f.createImageData(r,n);d.data.set(i),f.putImageData(d,0,0);var p;switch(t){case"jpeg":p=h.toDataURL("image/jpeg");break;case"webp":p=h.toDataURL("image/webp");break;default:p=h.toDataURL("image/png")}return this.staticPlot&&this.container.removeChild(o),p},v.computeTickMarks=function(){this.xaxis._length=this.glplot.viewBox[2]-this.glplot.viewBox[0],this.yaxis._length=this.glplot.viewBox[3]-this.glplot.viewBox[1];for(var t=[s.calcTicks(this.xaxis),s.calcTicks(this.yaxis)],e=0;e<2;++e)for(var r=0;r<t[e].length;++r)t[e][r].text=p(t[e][r].text+"").replace(/\n/g," ");return t},v.updateAxes=function(t){var e=s.subplotMatch,r="xaxis"+this.id.match(e)[1],n="yaxis"+this.id.match(e)[2];this.xaxis=t[r],this.yaxis=t[n]},v.updateFx=function(t){var e=this.fullLayout;e.dragmode=t.dragmode,e.hovermode=t.hovermode};var y=function(t){var e=t.xaxis.range,r=t.yaxis.range;t.graphDiv.layout.xaxis.range=e.slice(0),t.graphDiv.layout.yaxis.range=r.slice(0);var n={lastInputTime:t.camera.lastInputTime};n[t.xaxis._name]=e.slice(),n[t.yaxis._name]=r.slice(),t.graphDiv.emit("plotly_relayout",n)};v.cameraChanged=function(){var t=this.camera,e=this.xaxis.range,r=this.yaxis.range;this.glplot.setDataBox([e[0],r[0],e[1],r[1]]);var n=this.computeTickMarks(),o=this.glplotOptions.ticks;i(n,o)&&(this.glplotOptions.ticks=n,this.glplotOptions.dataBox=t.dataBox,this.glplot.update(this.glplotOptions),y(this))},v.destroy=function(){var t=this.traces;t&&Object.keys(t).map(function(e){t[e].dispose(),delete t[e]}),this.glplot.dispose(),this.staticPlot||this.container.removeChild(this.canvas),this.container.removeChild(this.svgContainer),this.container.removeChild(this.mouseContainer),this.glplot=null,this.stopped=!0},v.plot=function(t,e,r){var n,i,o,a=this.glplot,l=this.pixelRatio;this.fullLayout=r,this.updateAxes(r);var u=r.width,c=r.height,h=0|Math.ceil(l*u),f=0|Math.ceil(l*c),d=this.canvas;for(d.width===h&&d.height===f||(d.width=h,d.height=f),n=0;n<t.length;++n){var p=t[n],g=e[n];o=this.traces[p.uid],o?o.update(p,g):o=p._module.plot(this,p,g),this.traces[p.uid]=o}var v=Object.keys(this.traces);t:for(n=0;n<v.length;++n){for(i=0;i<e.length;++i)if(e[i][0].trace.uid===v[n])continue t;o=this.traces[v[n]],o.dispose(),delete this.traces[v[n]]}var y=this.glplotOptions;y.merge(r),y.screenBox=[0,0,u,c];var b=r._size,x=this.xaxis.domain,_=this.yaxis.domain;y.viewBox=[b.l+x[0]*b.w,b.b+_[0]*b.h,u-b.r-(1-x[1])*b.w,c-b.t-(1-_[1])*b.h],this.mouseContainer.style.width=b.w*(x[1]-x[0])+"px",this.mouseContainer.style.height=b.h*(_[1]-_[0])+"px",this.mouseContainer.height=b.h*(_[1]-_[0]),this.mouseContainer.style.left=b.l+x[0]*b.w+"px",this.mouseContainer.style.top=b.t+(1-_[1])*b.h+"px";
++var w=this.bounds;for(w[0]=w[1]=1/0,w[2]=w[3]=-(1/0),v=Object.keys(this.traces),n=0;n<v.length;++n){o=this.traces[v[n]];for(var M=0;M<2;++M)w[M]=Math.min(w[M],o.bounds[M]),w[M+2]=Math.max(w[M+2],o.bounds[M+2])}var k;for(n=0;n<2;++n)w[n]>w[n+2]&&(w[n]=-1,w[n+2]=1),k=this[m[n]],k._length=y.viewBox[n+2]-y.viewBox[n],s.doAutoRange(k);y.ticks=this.computeTickMarks();var A=this.xaxis.range,T=this.yaxis.range;y.dataBox=[A[0],T[0],A[1],T[1]],y.merge(r),a.update(y),this.glplot.draw()},v.draw=function(){if(!this.stopped){requestAnimationFrame(this.redraw);var t=this.glplot,e=this.camera,r=e.mouseListener,n=this.fullLayout;this.cameraChanged();var i=r.x*t.pixelRatio,o=this.canvas.height-t.pixelRatio*r.y;if(e.boxEnabled&&"zoom"===n.dragmode)this.selectBox.enabled=!0,this.selectBox.selectBox=[Math.min(e.boxStart[0],e.boxEnd[0]),Math.min(e.boxStart[1],e.boxEnd[1]),Math.max(e.boxStart[0],e.boxEnd[0]),Math.max(e.boxStart[1],e.boxEnd[1])],t.setDirty();else{this.selectBox.enabled=!1;var a=n._size,s=this.xaxis.domain,u=this.yaxis.domain,c=t.pick(i/t.pixelRatio+a.l+s[0]*a.w,o/t.pixelRatio-(a.t+(1-u[1])*a.h));if(c&&n.hovermode){var h=c.object._trace.handlePick(c);if(h&&(!this.lastPickResult||this.lastPickResult.traceUid!==h.trace.uid||this.lastPickResult.dataCoord[0]!==h.dataCoord[0]||this.lastPickResult.dataCoord[1]!==h.dataCoord[1])){var f=h;this.lastPickResult={traceUid:h.trace?h.trace.uid:null,dataCoord:h.dataCoord.slice()},this.spikes.update({center:c.dataCoord}),f.screenCoord=[((t.viewBox[2]-t.viewBox[0])*(c.dataCoord[0]-t.dataBox[0])/(t.dataBox[2]-t.dataBox[0])+t.viewBox[0])/t.pixelRatio,(this.canvas.height-(t.viewBox[3]-t.viewBox[1])*(c.dataCoord[1]-t.dataBox[1])/(t.dataBox[3]-t.dataBox[1])-t.viewBox[1])/t.pixelRatio];var d=f.hoverinfo;if("all"!==d){var p=d.split("+");p.indexOf("x")===-1&&(f.traceCoord[0]=void 0),p.indexOf("y")===-1&&(f.traceCoord[1]=void 0),p.indexOf("z")===-1&&(f.traceCoord[2]=void 0),p.indexOf("text")===-1&&(f.textLabel=void 0),p.indexOf("name")===-1&&(f.name=void 0)}l.loneHover({x:f.screenCoord[0],y:f.screenCoord[1],xLabel:this.hoverFormatter("xaxis",f.traceCoord[0]),yLabel:this.hoverFormatter("yaxis",f.traceCoord[1]),zLabel:f.traceCoord[2],text:f.textLabel,name:f.name,color:f.color},{container:this.svgContainer})}}else!c&&this.lastPickResult&&(this.spikes.update({}),this.lastPickResult=null,l.loneUnhover(this.svgContainer))}t.draw()}},v.hoverFormatter=function(t,e){if(void 0!==e){var r=this[t];return s.tickText(r,r.c2l(e),"hover").text}}},{"../../lib/html2unicode":560,"../../lib/show_no_webgl_msg":571,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592,"./camera":616,"./convert":617,"gl-plot2d":173,"gl-select-box":188,"gl-spikes2d":197}],620:[function(t,e,r){"use strict";function n(t,e){t=t||document.body,e=e||{};var r=[.01,1/0];"distanceLimits"in e&&(r[0]=e.distanceLimits[0],r[1]=e.distanceLimits[1]),"zoomMin"in e&&(r[0]=e.zoomMin),"zoomMax"in e&&(r[1]=e.zoomMax);var n=o({center:e.center||[0,0,0],up:e.up||[0,1,0],eye:e.eye||[0,0,10],mode:e.mode||"orbit",distanceLimits:r}),l=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],u=0,c=t.clientWidth,h=t.clientHeight,f={keyBindingMode:"rotate",view:n,element:t,delay:e.delay||16,rotateSpeed:e.rotateSpeed||1,zoomSpeed:e.zoomSpeed||1,translateSpeed:e.translateSpeed||1,flipX:!!e.flipX,flipY:!!e.flipY,modes:n.modes,tick:function(){var e=i(),r=this.delay,o=e-2*r;n.idle(e-r),n.recalcMatrix(o),n.flush(e-(100+2*r));for(var a=!0,s=n.computedMatrix,f=0;f<16;++f)a=a&&l[f]===s[f],l[f]=s[f];var d=t.clientWidth===c&&t.clientHeight===h;return c=t.clientWidth,h=t.clientHeight,a?!d:(u=Math.exp(n.computedRadius[0]),!0)},lookAt:function(t,e,r){n.lookAt(n.lastT(),t,e,r)},rotate:function(t,e,r){n.rotate(n.lastT(),t,e,r)},pan:function(t,e,r){n.pan(n.lastT(),t,e,r)},translate:function(t,e,r){n.translate(n.lastT(),t,e,r)}};Object.defineProperties(f,{matrix:{get:function(){return n.computedMatrix},set:function(t){return 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i=t("right-now"),o=t("3d-view"),a=t("mouse-change"),s=t("mouse-wheel")},{"3d-view":22,"mouse-change":371,"mouse-wheel":373,"right-now":412}],621:[function(t,e,r){"use strict";function n(t,e){for(var r=0;r<3;++r){var n=s[r];e[n]._gd=t}}var i=t("./scene"),o=t("../plots"),a=t("../../constants/xmlns_namespaces"),s=["xaxis","yaxis","zaxis"];r.name="gl3d",r.attr="scene",r.idRoot="scene",r.idRegex=/^scene([2-9]|[1-9][0-9]+)?$/,r.attrRegex=/^scene([2-9]|[1-9][0-9]+)?$/,r.attributes=t("./layout/attributes"),r.layoutAttributes=t("./layout/layout_attributes"),r.supplyLayoutDefaults=t("./layout/defaults"),r.plot=function(t){var e=t._fullLayout,r=t._fullData,a=o.getSubplotIds(e,"gl3d");e._paperdiv.style({width:e.width+"px",height:e.height+"px"}),t._context.setBackground(t,e.paper_bgcolor);for(var s=0;s<a.length;s++){var l=a[s],u=o.getSubplotData(r,"gl3d",l),c=e[l],h=c._scene;void 0===h&&(n(t,c),h=new i({id:l,graphDiv:t,container:t.querySelector(".gl-container"),staticPlot:t._context.staticPlot,plotGlPixelRatio:t._context.plotGlPixelRatio},e),c._scene=h),h.plot(u,e,t.layout)}},r.clean=function(t,e,r,n){for(var i=o.getSubplotIds(n,"gl3d"),a=0;a<i.length;a++){var s=i[a];!e[s]&&n[s]._scene&&n[s]._scene.destroy()}},r.toSVG=function(t){for(var e=t._fullLayout,r=o.getSubplotIds(e,"gl3d"),n=e._size,i=0;i<r.length;i++){var s=e[r[i]],l=s.domain,u=s._scene,c=u.toImage("png"),h=e._glimages.append("svg:image");h.attr({xmlns:a.svg,"xlink:href":c,x:n.l+n.w*l.x[0],y:n.t+n.h*(1-l.y[1]),width:n.w*(l.x[1]-l.x[0]),height:n.h*(l.y[1]-l.y[0]),preserveAspectRatio:"none"}),u.destroy()}},r.cleanId=function(t){if(t.match(/^scene[0-9]*$/)){var e=t.substr(5);return"1"===e&&(e=""),"scene"+e}},r.setConvert=t("./set_convert")},{"../../constants/xmlns_namespaces":549,"../plots":641,"./layout/attributes":622,"./layout/defaults":626,"./layout/layout_attributes":627,"./scene":631,"./set_convert":632}],622:[function(t,e,r){"use strict";e.exports={scene:{valType:"subplotid",dflt:"scene"}}},{}],623:[function(t,e,r){"use strict";var n=t("../../../components/color"),i=t("../../cartesian/layout_attributes"),o=t("../../../lib/extend").extendFlat;e.exports={showspikes:{valType:"boolean",dflt:!0},spikesides:{valType:"boolean",dflt:!0},spikethickness:{valType:"number",min:0,dflt:2},spikecolor:{valType:"color",dflt:n.defaultLine},showbackground:{valType:"boolean",dflt:!1},backgroundcolor:{valType:"color",dflt:"rgba(204, 204, 204, 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204)"}),gridwidth:i.gridwidth,zeroline:i.zeroline,zerolinecolor:i.zerolinecolor,zerolinewidth:i.zerolinewidth}},{"../../../components/color":477,"../../../lib/extend":556,"../../cartesian/layout_attributes":594}],624:[function(t,e,r){"use strict";var n=t("tinycolor2").mix,i=t("../../../lib"),o=t("./axis_attributes"),a=t("../../cartesian/axis_defaults"),s=["xaxis","yaxis","zaxis"],l=function(){},u=13600/187;e.exports=function(t,e,r){function c(t,e){return i.coerce(h,f,o,t,e)}for(var h,f,d=0;d<s.length;d++){var p=s[d];h=t[p]||{},f={_id:p[0]+r.scene,_name:p},e[p]=f=a(h,f,c,{font:r.font,letter:p[0],data:r.data,showGrid:!0,bgColor:r.bgColor}),c("gridcolor",n(f.color,r.bgColor,u).toRgbString()),c("title",p[0]),f.setScale=l,c("showspikes")&&(c("spikesides"),c("spikethickness"),c("spikecolor",f.color)),c("showaxeslabels"),c("showbackground")&&c("backgroundcolor")}}},{"../../../lib":561,"../../cartesian/axis_defaults":586,"./axis_attributes":623,tinycolor2:442}],625:[function(t,e,r){"use strict";function n(){this.bounds=[[-10,-10,-10],[10,10,10]],this.ticks=[[],[],[]],this.tickEnable=[!0,!0,!0],this.tickFont=["sans-serif","sans-serif","sans-serif"],this.tickSize=[12,12,12],this.tickAngle=[0,0,0],this.tickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.tickPad=[18,18,18],this.labels=["x","y","z"],this.labelEnable=[!0,!0,!0],this.labelFont=["Open Sans","Open Sans","Open Sans"],this.labelSize=[20,20,20],this.labelAngle=[0,0,0],this.labelColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.labelPad=[30,30,30],this.lineEnable=[!0,!0,!0],this.lineMirror=[!1,!1,!1],this.lineWidth=[1,1,1],this.lineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.lineTickEnable=[!0,!0,!0],this.lineTickMirror=[!1,!1,!1],this.lineTickLength=[10,10,10],this.lineTickWidth=[1,1,1],this.lineTickColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.gridEnable=[!0,!0,!0],this.gridWidth=[1,1,1],this.gridColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.zeroEnable=[!0,!0,!0],this.zeroLineColor=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.zeroLineWidth=[2,2,2],this.backgroundEnable=[!0,!0,!0],this.backgroundColor=[[.8,.8,.8,.5],[.8,.8,.8,.5],[.8,.8,.8,.5]],this._defaultTickPad=l(this.tickPad),this._defaultLabelPad=l(this.labelPad),this._defaultLineTickLength=l(this.lineTickLength)}function i(t){var e=new n;return e.merge(t),e}var o=t("arraytools"),a=t("../../../lib/html2unicode"),s=t("../../../lib/str2rgbarray"),l=o.copy1D,u=["xaxis","yaxis","zaxis"],c=n.prototype;c.merge=function(t){for(var e=this,r=0;r<3;++r){var n=t[u[r]];e.labels[r]=a(n.title),"titlefont"in n&&(n.titlefont.color&&(e.labelColor[r]=s(n.titlefont.color)),n.titlefont.family&&(e.labelFont[r]=n.titlefont.family),n.titlefont.size&&(e.labelSize[r]=n.titlefont.size)),"showline"in n&&(e.lineEnable[r]=n.showline),"linecolor"in n&&(e.lineColor[r]=s(n.linecolor)),"linewidth"in n&&(e.lineWidth[r]=n.linewidth),"showgrid"in n&&(e.gridEnable[r]=n.showgrid),"gridcolor"in n&&(e.gridColor[r]=s(n.gridcolor)),"gridwidth"in n&&(e.gridWidth[r]=n.gridwidth),"log"===n.type?e.zeroEnable[r]=!1:"zeroline"in n&&(e.zeroEnable[r]=n.zeroline),"zerolinecolor"in n&&(e.zeroLineColor[r]=s(n.zerolinecolor)),"zerolinewidth"in n&&(e.zeroLineWidth[r]=n.zerolinewidth),"ticks"in n&&n.ticks?e.lineTickEnable[r]=!0:e.lineTickEnable[r]=!1,"ticklen"in n&&(e.lineTickLength[r]=e._defaultLineTickLength[r]=n.ticklen),"tickcolor"in n&&(e.lineTickColor[r]=s(n.tickcolor)),"tickwidth"in n&&(e.lineTickWidth[r]=n.tickwidth),"tickangle"in n&&(e.tickAngle[r]="auto"===n.tickangle?0:Math.PI*-n.tickangle/180),"showticklabels"in n&&(e.tickEnable[r]=n.showticklabels),"tickfont"in n&&(n.tickfont.color&&(e.tickColor[r]=s(n.tickfont.color)),n.tickfont.family&&(e.tickFont[r]=n.tickfont.family),n.tickfont.size&&(e.tickSize[r]=n.tickfont.size)),"mirror"in n?["ticks","all","allticks"].indexOf(n.mirror)!==-1?(e.lineTickMirror[r]=!0,e.lineMirror[r]=!0):n.mirror===!0?(e.lineTickMirror[r]=!1,e.lineMirror[r]=!0):(e.lineTickMirror[r]=!1,e.lineMirror[r]=!1):e.lineMirror[r]=!1,"showbackground"in n&&n.showbackground!==!1?(e.backgroundEnable[r]=!0,e.backgroundColor[r]=s(n.backgroundcolor)):e.backgroundEnable[r]=!1}},e.exports=i},{"../../../lib/html2unicode":560,"../../../lib/str2rgbarray":573,arraytools:28}],626:[function(t,e,r){"use strict";function n(t,e,r,n){for(var o=r("bgcolor"),l=i.combine(o,n.paper_bgcolor),u=Object.keys(a.camera),c=0;c<u.length;c++)r("camera."+u[c]+".x"),r("camera."+u[c]+".y"),r("camera."+u[c]+".z");var h=!!r("aspectratio.x")&&!!r("aspectratio.y")&&!!r("aspectratio.z"),f=h?"manual":"auto",d=r("aspectmode",f);h||(t.aspectratio=e.aspectratio={x:1,y:1,z:1},"manual"===d&&(e.aspectmode="auto")),s(t,e,{font:n.font,scene:n.id,data:n.fullData,bgColor:l}),r("dragmode",n.getDfltFromLayout("dragmode")),r("hovermode",n.getDfltFromLayout("hovermode"))}var i=t("../../../components/color"),o=t("../../subplot_defaults"),a=t("./layout_attributes"),s=t("./axis_defaults");e.exports=function(t,e,r){function i(e){if(!s){var r=a[e].values.indexOf(t[e])!==-1;return r?t[e]:void 0}}var s=e._has("cartesian")||e._has("geo")||e._has("gl2d")||e._has("pie")||e._has("ternary");o(t,e,r,{type:"gl3d",attributes:a,handleDefaults:n,font:e.font,fullData:r,getDfltFromLayout:i,paper_bgcolor:e.paper_bgcolor})}},{"../../../components/color":477,"../../subplot_defaults":647,"./axis_defaults":624,"./layout_attributes":627}],627:[function(t,e,r){"use strict";function n(t,e,r){return{x:{valType:"number",dflt:t},y:{valType:"number",dflt:e},z:{valType:"number",dflt:r}}}var i=t("./axis_attributes"),o=t("../../../lib/extend").extendFlat;e.exports={bgcolor:{valType:"color",dflt:"rgba(0,0,0,0)"},camera:{up:o(n(0,0,1),{}),center:o(n(0,0,0),{}),eye:o(n(1.25,1.25,1.25),{})},domain:{x:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]},y:{valType:"info_array",items:[{valType:"number",min:0,max:1},{valType:"number",min:0,max:1}],dflt:[0,1]}},aspectmode:{valType:"enumerated",values:["auto","cube","data","manual"],dflt:"auto"},aspectratio:{x:{valType:"number",min:0},y:{valType:"number",min:0},z:{valType:"number",min:0}},xaxis:i,yaxis:i,zaxis:i,dragmode:{valType:"enumerated",values:["orbit","turntable","zoom","pan"],dflt:"turntable"},hovermode:{valType:"enumerated",values:["closest",!1],dflt:"closest"},_deprecated:{cameraposition:{valType:"info_array"}}}},{"../../../lib/extend":556,"./axis_attributes":623}],628:[function(t,e,r){"use strict";function n(){this.enabled=[!0,!0,!0],this.colors=[[0,0,0,1],[0,0,0,1],[0,0,0,1]],this.drawSides=[!0,!0,!0],this.lineWidth=[1,1,1]}function i(t){var e=new n;return e.merge(t),e}var o=t("../../../lib/str2rgbarray"),a=["xaxis","yaxis","zaxis"],s=n.prototype;s.merge=function(t){for(var e=0;e<3;++e){var r=t[a[e]];this.enabled[e]=r.showspikes,this.colors[e]=o(r.spikecolor),this.drawSides[e]=r.spikesides,this.lineWidth[e]=r.spikethickness}},e.exports=i},{"../../../lib/str2rgbarray":573}],629:[function(t,e,r){"use strict";function n(t){for(var e=new Array(3),r=0;r<3;++r){for(var n=t[r],i=new Array(n.length),o=0;o<n.length;++o)i[o]=n[o].x;e[r]=i}return e}function i(t){for(var e=t.axesOptions,r=t.glplot.axesPixels,i=t.fullSceneLayout,u=[[],[],[]],c=0;c<3;++c){var h=i[s[c]];if(h._length=(r[c].hi-r[c].lo)*r[c].pixelsPerDataUnit/t.dataScale[c],Math.abs(h._length)===1/0)u[c]=[];else{h.range[0]=r[c].lo/t.dataScale[c],h.range[1]=r[c].hi/t.dataScale[c],h._m=1/(t.dataScale[c]*r[c].pixelsPerDataUnit),h.range[0]===h.range[1]&&(h.range[0]-=1,h.range[1]+=1);var f=h.tickmode;if("auto"===h.tickmode){h.tickmode="linear";var d=h.nticks||o.Lib.constrain(h._length/40,4,9);o.Axes.autoTicks(h,Math.abs(h.range[1]-h.range[0])/d)}for(var p=o.Axes.calcTicks(h),g=0;g<p.length;++g)p[g].x=p[g].x*t.dataScale[c],p[g].text=a(p[g].text);u[c]=p,h.tickmode=f}}e.ticks=u;for(var c=0;c<3;++c){l[c]=.5*(t.glplot.bounds[0][c]+t.glplot.bounds[1][c]);for(var g=0;g<2;++g)e.bounds[g][c]=t.glplot.bounds[g][c]}t.contourLevels=n(u)}e.exports=i;var o=t("../../../plotly"),a=t("../../../lib/html2unicode"),s=["xaxis","yaxis","zaxis"],l=[0,0,0]},{"../../../lib/html2unicode":560,"../../../plotly":582}],630:[function(t,e,r){"use strict";function n(t,e){var r,n,i=[0,0,0,0];for(r=0;r<4;++r)for(n=0;n<4;++n)i[n]+=t[4*r+n]*e[r];return i}function i(t,e){var r=n(t.projection,n(t.view,n(t.model,[e[0],e[1],e[2],1])));return r}e.exports=i},{}],631:[function(t,e,r){"use strict";function n(t){function e(e,r){if("string"==typeof r)return r;var n=t.fullSceneLayout[e];return g.tickText(n,n.c2l(r),"hover").text}var r,n=t.svgContainer,i=t.container.getBoundingClientRect(),o=i.width,a=i.height;n.setAttributeNS(null,"viewBox","0 0 "+o+" "+a),n.setAttributeNS(null,"width",o),n.setAttributeNS(null,"height",a),k(t),t.glplot.axes.update(t.axesOptions);for(var s=Object.keys(t.traces),l=null,u=t.glplot.selection,c=0;c<s.length;++c)r=t.traces[s[c]],r.handlePick(u)&&(l=r),r.setContourLevels&&r.setContourLevels();var h;if(null!==l){var f=x(t.glplot.cameraParams,u.dataCoordinate);r=l.data;var d=r.hoverinfo,p=e("xaxis",u.traceCoordinate[0]),v=e("yaxis",u.traceCoordinate[1]),y=e("zaxis",u.traceCoordinate[2]);if("all"!==d){var b=d.split("+");b.indexOf("x")===-1&&(p=void 0),b.indexOf("y")===-1&&(v=void 0),b.indexOf("z")===-1&&(y=void 0),b.indexOf("text")===-1&&(u.textLabel=void 0),b.indexOf("name")===-1&&(l.name=void 0)}t.fullSceneLayout.hovermode&&m.loneHover({x:(.5+.5*f[0]/f[3])*o,y:(.5-.5*f[1]/f[3])*a,xLabel:p,yLabel:v,zLabel:y,text:u.textLabel,name:l.name,color:l.color},{container:n});var _={points:[{x:p,y:v,z:y,data:r._input,fullData:r,curveNumber:r.index,pointNumber:u.data.index}]};u.buttons&&u.distance<5?t.graphDiv.emit("plotly_click",_):t.graphDiv.emit("plotly_hover",_),h=_}else m.loneUnhover(n),t.graphDiv.emit("plotly_unhover",h)}function i(t,e,r,i){var o={canvas:r,gl:i,container:t.container,axes:t.axesOptions,spikes:t.spikeOptions,pickRadius:10,snapToData:!0,autoScale:!0,autoBounds:!1};if(t.staticMode){if(!h){c=document.createElement("canvas");try{h=c.getContext("webgl",{preserveDrawingBuffer:!0,premultipliedAlpha:!0,antialias:!0})}catch(t){throw new Error("error creating static canvas/context for 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o=document.createElementNS("http://www.w3.org/2000/svg","svg");o.style.position="absolute",o.style.top=o.style.left="0px",o.style.width=o.style.height="100%",o.style["z-index"]=20,o.style["pointer-events"]="none",r.appendChild(o),this.svgContainer=o,r.id=t.id,r.style.position="absolute",r.style.top=r.style.left="0px",r.style.width=r.style.height="100%",n.appendChild(r),this.fullLayout=e,this.id=t.id||"scene",this.fullSceneLayout=e[this.id],this.plotArgs=[[],{},{}],this.axesOptions=w(e[this.id]),this.spikeOptions=M(e[this.id]),this.container=r,this.staticMode=!!t.staticPlot,this.pixelRatio=t.plotGlPixelRatio||2,this.dataScale=[1,1,1],this.contourLevels=[[],[],[]],!i(this,e)}function a(t,e,r,n){for(var i,o=0;o<e.length;++o)if(Array.isArray(e[o]))for(var a=0;a<e[o].length;++a)i=t.d2l(e[o][a]),!isNaN(i)&&isFinite(i)&&(n[0][r]=Math.min(n[0][r],i),n[1][r]=Math.max(n[1][r],i));else i=t.d2l(e[o]),!isNaN(i)&&isFinite(i)&&(n[0][r]=Math.min(n[0][r],i),n[1][r]=Math.max(n[1][r],i))}function s(t,e,r){var n=t.fullSceneLayout;a(n.xaxis,e.x,0,r),a(n.yaxis,e.y,1,r),a(n.zaxis,e.z,2,r)}function l(t){return[[t.eye.x,t.eye.y,t.eye.z],[t.center.x,t.center.y,t.center.z],[t.up.x,t.up.y,t.up.z]]}function u(t){return{up:{x:t.up[0],y:t.up[1],z:t.up[2]},center:{x:t.center[0],y:t.center[1],z:t.center[2]},eye:{x:t.eye[0],y:t.eye[1],z:t.eye[2]}}}var c,h,f=t("gl-plot3d"),d=t("../../lib"),p=t("../../plots/plots"),g=t("../../plots/cartesian/axes"),m=t("../../plots/cartesian/graph_interact"),v=t("../../lib/str2rgbarray"),y=t("../../lib/show_no_webgl_msg"),b=t("./camera"),x=t("./project"),_=t("./set_convert"),w=t("./layout/convert"),M=t("./layout/spikes"),k=t("./layout/tick_marks"),A=o.prototype;A.recoverContext=function(){function t(){return r.isContextLost()?void requestAnimationFrame(t):i(e,e.fullLayout,n,r)?void e.plot.apply(e,e.plotArgs):void d.error("Catastrophic and unrecoverable WebGL error. 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m=Object.keys(this.traces);t:for(o=0;o<m.length;++o){for(a=0;a<t.length;++a)if(t[a].uid===m[o]&&t[a].visible===!0)continue t;i=this.traces[m[o]],i.dispose(),delete this.traces[m[o]]}var y=[[0,0,0],[0,0,0]],b=[],x={};for(o=0;o<3;++o){if(l=c[T[o]],u=l.type,u in x?(x[u].acc*=d[o],x[u].count+=1):x[u]={acc:d[o],count:1},l.autorange){for(y[0][o]=1/0,y[1][o]=-(1/0),a=0;a<this.glplot.objects.length;++a){var w=this.glplot.objects[a].bounds;y[0][o]=Math.min(y[0][o],w[0][o]/d[o]),y[1][o]=Math.max(y[1][o],w[1][o]/d[o])}if("rangemode"in l&&"tozero"===l.rangemode&&(y[0][o]=Math.min(y[0][o],0),y[1][o]=Math.max(y[1][o],0)),y[0][o]>y[1][o])y[0][o]=-1,y[1][o]=1;else{var M=y[1][o]-y[0][o];y[0][o]-=M/32,y[1][o]+=M/32}}else{var k=c[T[o]].range;y[0][o]=k[0],y[1][o]=k[1]}y[0][o]===y[1][o]&&(y[0][o]-=1,y[1][o]+=1),b[o]=y[1][o]-y[0][o],this.glplot.bounds[0][o]=y[0][o]*d[o],this.glplot.bounds[1][o]=y[1][o]*d[o]}var A=[1,1,1];for(o=0;o<3;++o){l=c[T[o]],u=l.type;var E=x[u];A[o]=Math.pow(E.acc,1/E.count)/d[o]}var S,L=4;if("auto"===c.aspectmode)S=Math.max.apply(null,A)/Math.min.apply(null,A)<=L?A:[1,1,1];else if("cube"===c.aspectmode)S=[1,1,1];else if("data"===c.aspectmode)S=A;else{if("manual"!==c.aspectmode)throw new Error("scene.js aspectRatio was not one of the enumerated types");var z=c.aspectratio;S=[z.x,z.y,z.z]}c.aspectratio.x=h.aspectratio.x=S[0],c.aspectratio.y=h.aspectratio.y=S[1],c.aspectratio.z=h.aspectratio.z=S[2],this.glplot.aspect=S;var I=c.domain||null,C=e._size||null;if(I&&C){var P=this.container.style;P.position="absolute",P.left=C.l+I.x[0]*C.w+"px",P.top=C.t+(1-I.y[1])*C.h+"px",P.width=C.w*(I.x[1]-I.x[0])+"px",P.height=C.h*(I.y[1]-I.y[0])+"px"}this.glplot.redraw()}},A.destroy=function(){this.glplot.dispose(),this.container.parentNode.removeChild(this.container),this.glplot=null},A.setCameraToDefault=function(){this.setCamera({eye:{x:1.25,y:1.25,z:1.25},center:{x:0,y:0,z:0},up:{x:0,y:0,z:1}})},A.getCamera=function(){return 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Uint8Array(r*n*4);e.readPixels(0,0,r,n,e.RGBA,e.UNSIGNED_BYTE,i);for(var o=0,a=n-1;o<a;++o,--a)for(var s=0;s<r;++s)for(var l=0;l<4;++l){var u=i[4*(r*o+s)+l];i[4*(r*o+s)+l]=i[4*(r*a+s)+l],i[4*(r*a+s)+l]=u}var h=document.createElement("canvas");h.width=r,h.height=n;var f=h.getContext("2d"),d=f.createImageData(r,n);d.data.set(i),f.putImageData(d,0,0);var p;switch(t){case"jpeg":p=h.toDataURL("image/jpeg");break;case"webp":p=h.toDataURL("image/webp");break;default:p=h.toDataURL("image/png")}return this.staticMode&&this.container.removeChild(c),p},e.exports=o},{"../../lib":561,"../../lib/show_no_webgl_msg":571,"../../lib/str2rgbarray":573,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592,"../../plots/plots":641,"./camera":620,"./layout/convert":625,"./layout/spikes":628,"./layout/tick_marks":629,"./project":630,"./set_convert":632,"gl-plot3d":175}],632:[function(t,e,r){"use strict";var n=t("../cartesian/axes"),i=function(){};e.exports=function(t){n.setConvert(t),t.setScale=i}},{"../cartesian/axes":585}],633:[function(t,e,r){"use strict";var n=t("../plotly"),i=t("./font_attributes"),o=t("../components/color/attributes"),a=n.Lib.extendFlat;e.exports={font:{family:a({},i.family,{dflt:'"Open Sans", verdana, arial, sans-serif'}),size:a({},i.size,{dflt:12}),color:a({},i.color,{dflt:o.defaultLine})},title:{valType:"string",dflt:"Click to enter Plot 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strict";e.exports={styleUrlPrefix:"mapbox://styles/mapbox/",styleUrlSuffix:"v9",controlContainerClassName:"mapboxgl-control-container",noAccessTokenErrorMsg:["Missing Mapbox access token.","Mapbox trace type require a Mapbox access token to be registered.","For example:","  Plotly.plot(gd, data, layout, { mapboxAccessToken: 'my-access-token' });","More info here: https://www.mapbox.com/help/define-access-token/"].join("\n"),mapOnErrorMsg:"Mapbox error."}},{}],635:[function(t,e,r){"use strict";var n=t("../../lib");e.exports=function(t,e){var r=t.split(" "),i=r[0],o=r[1],a=Array.isArray(e)?n.mean(e):e,s=.5+a/100,l=1.5+a/100,u=["",""],c=[0,0];switch(i){case"top":u[0]="top",c[1]=-l;break;case"bottom":u[0]="bottom",c[1]=l}switch(o){case"left":u[1]="right",c[0]=-s;break;case"right":u[1]="left",c[0]=s}var h;return h=u[0]&&u[1]?u.join("-"):u[0]?u[0]:u[1]?u[1]:"center",{anchor:h,offset:c}}},{"../../lib":561}],636:[function(t,e,r){"use strict";function n(t,e){for(var r=[],n=0;n<t.length;n++){var i=t[n],o=i[0].trace;o.subplot===e&&r.push(i)}return r}function i(t,e){for(var r=t._fullLayout,n=t._context,i=n.mapboxAccessToken,o=0;o<e.length;o++){var a=r[e[o]];if(a.accesstoken){i=a.accesstoken;break}}if(!i)throw new Error(u.noAccessTokenErrorMsg);return i}var o=t("mapbox-gl"),a=t("../plots"),s=t("../../constants/xmlns_namespaces"),l=t("./mapbox"),u=t("./constants");r.name="mapbox",r.attr="subplot",r.idRoot="mapbox",r.idRegex=/^mapbox([2-9]|[1-9][0-9]+)?$/,r.attrRegex=/^mapbox([2-9]|[1-9][0-9]+)?$/,r.attributes={subplot:{valType:"subplotid",dflt:"mapbox"}},r.layoutAttributes=t("./layout_attributes"),r.supplyLayoutDefaults=t("./layout_defaults"),r.plot=function(t){var e=t._fullLayout,r=t.calcdata,s=a.getSubplotIds(e,"mapbox"),u=i(t,s);o.accessToken=u;for(var c=0;c<s.length;c++){var h=s[c],f=n(r,h),d=e[h],p=d._subplot;d.accesstoken=u,p||(p=l({gd:t,container:e._glcontainer.node(),id:h,fullLayout:e,staticPlot:t._context.staticPlot}),e[h]._subplot=p),p.plot(f,e,t._promises)}},r.clean=function(t,e,r,n){for(var i=a.getSubplotIds(n,"mapbox"),o=0;o<i.length;o++){var s=i[o];!e[s]&&n[s]._subplot&&n[s]._subplot.destroy()}},r.toSVG=function(t){for(var e=t._fullLayout,r=a.getSubplotIds(e,"mapbox"),n=e._size,i=0;i<r.length;i++){var o=e[r[i]],l=o.domain,u=o._subplot,c=u.toImage("png"),h=e._glimages.append("svg:image");h.attr({xmlns:s.svg,"xlink:href":c,x:n.l+n.w*l.x[0],y:n.t+n.h*(1-l.y[1]),width:n.w*(l.x[1]-l.x[0]),height:n.h*(l.y[1]-l.y[0]),preserveAspectRatio:"none"}),u.destroy()}}},{"../../constants/xmlns_namespaces":549,"../plots":641,"./constants":634,"./layout_attributes":638,"./layout_defaults":639,"./mapbox":640,"mapbox-gl":273}],637:[function(t,e,r){"use strict";function n(t,e){this.mapbox=t,this.map=t.map,this.uid=t.uid+"-layer"+e,this.idSource=this.uid+"-source",this.idLayer=this.uid+"-layer",this.sourceType=null,this.source=null,this.layerType=null,this.below=null,this.visible=!1}function i(t){var e=t.source;return s.isPlainObject(e)||"string"==typeof e&&e.length>0}function o(t){var e={},r={};switch(t.type){case"circle":s.extendFlat(r,{"circle-radius":t.circle.radius,"circle-color":t.color,"circle-opacity":t.opacity});break;case"line":s.extendFlat(r,{"line-width":t.line.width,"line-color":t.color,"line-opacity":t.opacity});break;case"fill":s.extendFlat(r,{"fill-color":t.color,"fill-outline-color":t.fill.outlinecolor,"fill-opacity":t.opacity});break;case"symbol":var n=t.symbol,i=l(n.textposition,n.iconsize);s.extendFlat(e,{"icon-image":n.icon+"-15","icon-size":n.iconsize/10,"text-field":n.text,"text-size":n.textfont.size,"text-anchor":i.anchor,"text-offset":i.offset}),s.extendFlat(r,{"icon-color":t.color,"text-color":n.textfont.color,"text-opacity":t.opacity})}return{layout:e,
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s=t("mapbox-gl"),l=t("../cartesian/graph_interact"),u=t("../../lib"),c=t("./constants"),h=t("./layout_attributes"),f=t("./layers"),d=n.prototype;e.exports=function(t){var e=new n(t);return e},d.plot=function(t,e,r){var n=this,i=n.opts=e[this.id];n.map&&i.accesstoken!==n.accessToken&&(n.map.remove(),n.map=null,n.styleObj=null,n.traceHash=[],n.layerList={});var o;o=n.map?new Promise(function(r,i){n.updateMap(t,e,r,i)}):new Promise(function(r,i){n.createMap(t,e,r,i)}),r.push(o)},d.createMap=function(t,e,r,n){function o(){l.loneUnhover(e._toppaper)}var h=this,f=h.gd,d=h.opts,p=h.styleObj=i(d.style);h.accessToken=d.accesstoken;var g=h.map=new 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s=a({},t.layout),l=[[s,["plot_bgcolor"],["backgroundColor"]],[s,["showlegend"],["showLegend"]],[s,["radialaxis"],["radialAxis"]],[s,["angularaxis"],["angularAxis"]],[s.angularaxis,["showline"],["gridLinesVisible"]],[s.angularaxis,["showticklabels"],["labelsVisible"]],[s.angularaxis,["nticks"],["ticksCount"]],[s.angularaxis,["tickorientation"],["tickOrientation"]],[s.angularaxis,["ticksuffix"],["ticksSuffix"]],[s.angularaxis,["range"],["domain"]],[s.angularaxis,["endpadding"],["endPadding"]],[s.radialaxis,["showline"],["gridLinesVisible"]],[s.radialaxis,["tickorientation"],["tickOrientation"]],[s.radialaxis,["ticksuffix"],["ticksSuffix"]],[s.radialaxis,["range"],["domain"]],[s.angularAxis,["showline"],["gridLinesVisible"]],[s.angularAxis,["showticklabels"],["labelsVisible"]],[s.angularAxis,["nticks"],["ticksCount"]],[s.angularAxis,["tickorientation"],["tickOrientation"]],[s.angularAxis,["ticksuffix"],["ticksSuffix"]],[s.angularAxis,["range"],["domain"]],[s.angularAxis,["endpadding"],["endPadding"]],[s.radialAxis,["showline"],["gridLinesVisible"]],[s.radialAxis,["tickorientation"],["tickOrientation"]],[s.radialAxis,["ticksuffix"],["ticksSuffix"]],[s.radialAxis,["range"],["domain"]],[s.font,["outlinecolor"],["outlineColor"]],[s.legend,["traceorder"],["reverseOrder"]],[s,["labeloffset"],["labelOffset"]],[s,["defaultcolorrange"],["defaultColorRange"]]];if(l.forEach(function(t,r){o.util.translator.apply(null,t.concat(e))}),e?("undefined"!=typeof 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n=t("../heatmap/attributes"),i=t("../scatter/attributes"),o=t("../../components/colorscale/attributes"),a=t("../../lib/extend").extendFlat,s=i.line;e.exports=a({},{z:n.z,x:n.x,x0:n.x0,dx:n.dx,y:n.y,y0:n.y0,dy:n.dy,text:n.text,transpose:n.transpose,xtype:n.xtype,ytype:n.ytype,connectgaps:n.connectgaps,autocontour:{valType:"boolean",dflt:!0},ncontours:{valType:"integer",dflt:0},contours:{start:{valType:"number",dflt:null},end:{valType:"number",dflt:null},size:{valType:"number",dflt:null},coloring:{valType:"enumerated",values:["fill","heatmap","lines","none"],dflt:"fill"},showlines:{valType:"boolean",dflt:!0}},line:{color:a({},s.color,{}),width:s.width,dash:s.dash,smoothing:a({},s.smoothing,{})},_nestedModules:{colorbar:"Colorbar"}},o,{autocolorscale:a({},o.autocolorscale,{dflt:!1})})},{"../../components/colorscale/attributes":483,"../../lib/extend":556,"../heatmap/attributes":699,"../scatter/attributes":743}],690:[function(t,e,r){"use strict";var n=t("../../plots/cartesian/axes"),i=t("../heatmap/calc");e.exports=function(t,e){var r=i(t,e),o=e.contours;if(e.autocontour!==!1){var a={type:"linear",range:[e.zmin,e.zmax]};n.autoTicks(a,(e.zmax-e.zmin)/(e.ncontours||15)),o.start=n.tickFirst(a),o.size=a.dtick,a.range.reverse(),o.end=n.tickFirst(a),o.start===e.zmin&&(o.start+=o.size),o.end===e.zmax&&(o.end-=o.size),o.end+=o.size/100,e._input.contours=o}return r}},{"../../plots/cartesian/axes":585,"../heatmap/calc":700}],691:[function(t,e,r){"use strict";var n=t("../../plots/plots"),i=t("../../components/colorbar/draw"),o=t("./make_color_map");e.exports=function(t,e){var r=e[0].trace,a="cb"+r.uid;if(t._fullLayout._infolayer.selectAll("."+a).remove(),r.showscale===!1)return void n.autoMargin(t,a);var s=i(t,a);e[0].t.cb=s;var 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n=t("d3"),i=t("../../components/colorscale/get_scale");e.exports=function(t){var e,r,o=t.contours,a=o.start,s=o.end,l=o.size||1,u=Math.floor((s+l/10-a)/l)+1,c="lines"===o.coloring?0:1,h=i(t.colorscale),f=h.length,d=new Array(f),p=new Array(f);if("heatmap"===o.coloring){for(t.zauto&&t.autocontour===!1&&(t.zmin=a-l/2,t.zmax=t.zmin+u*l),r=0;r<f;r++)e=h[r],d[r]=e[0]*(t.zmax-t.zmin)+t.zmin,p[r]=e[1];var g=n.extent([t.zmin,t.zmax,o.start,o.start+l*(u-1)]),m=g[t.zmin<t.zmax?0:1],v=g[t.zmin<t.zmax?1:0];m!==t.zmin&&(d.splice(0,0,m),p.splice(0,0,Range[0])),v!==t.zmax&&(d.push(v),p.push(p[p.length-1]))}else for(r=0;r<f;r++)e=h[r],d[r]=(e[0]*(u+c-1)-c/2)*l+a,p[r]=e[1];var y=n.scale.linear().interpolate(n.interpolateRgb).domain(d).range(p);return y}},{"../../components/colorscale/get_scale":489,d3:90}],696:[function(t,e,r){"use strict";function n(t,e,r){var n=r[0].trace,o=r[0].x,s=r[0].y,u=n.contours,c=n.uid,h=e.x(),f=e.y(),m=t._fullLayout,b="contour"+c,x=i(u,e,r[0]);if(n.visible!==!0)return 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n=t("../../components/colorscale/color_attributes"),i=t("../../components/drawing"),o=(t("./constants"),t("../../lib/extend").extendFlat);e.exports={x:{valType:"data_array"},x0:{valType:"any",dflt:0},dx:{valType:"number",dflt:1},y:{valType:"data_array"},y0:{valType:"any",dflt:0},dy:{valType:"number",dflt:1},text:{valType:"string",dflt:"",arrayOk:!0},mode:{valType:"flaglist",flags:["lines","markers","text"],extras:["none"]},hoveron:{valType:"flaglist",flags:["points","fills"]},line:{color:{valType:"color"},width:{valType:"number",min:0,dflt:2},shape:{valType:"enumerated",values:["linear","spline","hv","vh","hvh","vhv"],dflt:"linear"},smoothing:{valType:"number",min:0,max:1.3,dflt:1},dash:{valType:"string",values:["solid","dot","dash","longdash","dashdot","longdashdot"],dflt:"solid"}},connectgaps:{valType:"boolean",dflt:!1},fill:{valType:"enumerated",values:["none","tozeroy","tozerox","tonexty","tonextx","toself","tonext"],dflt:"none"},fillcolor:{valType:"color"},marker:o({},{symbol:{valType:"enumerated",values:i.symbolList,dflt:"circle",arrayOk:!0},opacity:{valType:"number",min:0,max:1,arrayOk:!0},size:{valType:"number",min:0,dflt:6,arrayOk:!0},maxdisplayed:{valType:"number",min:0,dflt:0},sizeref:{valType:"number",dflt:1},
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n=t("../../lib"),i=t("./attributes"),o=t("./constants"),a=t("./subtypes"),s=t("./xy_defaults"),l=t("./marker_defaults"),u=t("./line_defaults"),c=t("./line_shape_defaults"),h=t("./text_defaults"),f=t("./fillcolor_defaults"),d=t("../../components/errorbars/defaults");e.exports=function(t,e,r,p){function g(r,o){return n.coerce(t,e,i,r,o)}var m=s(t,e,g),v=m<o.PTS_LINESONLY?"lines+markers":"lines";if(!m)return void(e.visible=!1);g("text"),g("mode",v),a.hasLines(e)&&(u(t,e,r,p,g),c(t,e,g),g("connectgaps")),a.hasMarkers(e)&&l(t,e,r,p,g),a.hasText(e)&&h(t,e,p,g);var 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s=t("d3"),l=t("../../plots/cartesian/graph_interact"),u=t("../../plots/cartesian/axes"),c=t("../../lib/topojson_utils").getTopojsonFeatures,h=t("../../lib/geo_location_utils").locationToFeature,f=t("../../lib/array_to_calc_item"),d=t("../../components/color"),p=t("../../components/drawing"),g=t("../scatter/subtypes"),m=t("./attributes"),v=e.exports={};v.calcGeoJSON=function(t,e){var r,i,o,a,s=[],l=Array.isArray(t.locations);l?(a=t.locations,r=a.length,i=c(t,e),o=function(t,e){var r=h(t.locationmode,a[e],i);return void 0!==r?r.properties.ct:void 0;
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h=v.calcGeoJSON(e,t.topojson),f=o(t,e),d=a(e),p=e.hoverinfo,m="all"===p||p.indexOf("name")!==-1,y=null;u&&i.selectAll("path.point").data(h).enter().append("path").classed("point",!0).on("mouseover",r).on("click",n).on("mouseout",function(){l.loneUnhover(t.hoverContainer),t.graphDiv.emit("plotly_unhover",y)}).on("mousedown",function(){l.loneUnhover(t.hoverContainer)}).on("mouseup",r),c&&i.selectAll("g").data(h).enter().append("g").append("text")}}),v.style(t)},v.style=function(t){var e=t.framework.selectAll("g.trace.scattergeo");e.style("opacity",function(t){return t.opacity}),e.each(function(t){s.select(this).selectAll("path.point").call(p.pointStyle,t),s.select(this).selectAll("text").call(p.textPointStyle,t)}),e.selectAll("path.js-line").style("fill","none").each(function(t){var e=t.trace,r=e.line||{};s.select(this).call(d.stroke,r.color).call(p.dashLine,r.dash||"",r.width||0)})}},{"../../components/color":477,"../../components/drawing":500,"../../lib/array_to_calc_item":552,"../../lib/geo_location_utils":558,"../../lib/topojson_utils":575,"../../plots/cartesian/axes":585,"../../plots/cartesian/graph_interact":592,"../scatter/subtypes":762,"./attributes":771,d3:90}],776:[function(t,e,r){"use strict";var n=t("../scatter/attributes"),i=t("../../components/colorscale/color_attributes"),o=t("../../constants/gl2d_dashes"),a=t("../../constants/gl_markers"),s=t("../../lib/extend").extendFlat,l=t("../../lib/extend").extendDeep,u=n.line,c=n.marker,h=c.line;e.exports={x:n.x,x0:n.x0,dx:n.dx,y:n.y,y0:n.y0,dy:n.dy,text:s({},n.text,{}),mode:{valType:"flaglist",flags:["lines","markers"],extras:["none"]},line:{color:u.color,width:u.width,dash:{valType:"enumerated",values:Object.keys(o),dflt:"solid"}},marker:l({},i("marker"),{symbol:{valType:"enumerated",values:Object.keys(a),dflt:"circle",arrayOk:!0},size:c.size,sizeref:c.sizeref,sizemin:c.sizemin,sizemode:c.sizemode,opacity:c.opacity,showscale:c.showscale,line:l({},i("marker.line"),{width:h.width})}),connectgaps:n.connectgaps,fill:s({},n.fill,{values:["none","tozeroy","tozerox"]}),fillcolor:n.fillcolor,_nestedModules:{error_x:"ErrorBars",error_y:"ErrorBars","marker.colorbar":"Colorbar"}}},{"../../components/colorscale/color_attributes":485,"../../constants/gl2d_dashes":546,"../../constants/gl_markers":548,"../../lib/extend":556,"../scatter/attributes":743}],777:[function(t,e,r){"use 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e=t[0].trace,r=e.marker||{},n=r.symbol,i=e.text,o="circle"!==n?f(n):d,a=g.hasText(e)?f(i):d,s=[],l=0;l<t.length;l++){var u=t[l];s.push({type:"Feature",geometry:{type:"Point",coordinates:u.lonlat},properties:{symbol:o(u.mx),text:a(u.tx)}})}return{type:"FeatureCollection",features:s}}function u(t,e){var r,n=t.marker;if(Array.isArray(n.color)){for(var i=Object.keys(e[v]),o=[],a=0;a<i.length;a++){var s=i[a];o.push([e[v][s],s])}r={property:v,stops:o}}else r=n.color;return r}function c(t,e){var r,n=t.marker;if(Array.isArray(n.size)){for(var i=Object.keys(e[y]),o=[],a=0;a<i.length;a++){var s=i[a];o.push([e[y][s],+s])}o.sort(function(t,e){return t[0]-e[0]}),r={property:y,stops:o}}else r=n.size/2;return r}function h(t){for(var e=t[0].trace,r=e.connectgaps,n=[],i=[],o=0;o<t.length;o++){var a=t[o];i.push(a.lonlat),!r&&a.gapAfter&&i.length>0&&(n.push(i),i=[])}return n.push(i),n}function f(t){return Array.isArray(t)?function(t){return t}:t?function(){return t}:d}function d(){return""}var 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S={};S[v]={},S[y]={},k.geojson=s(t,S),k.layout.visibility="visible",p.extendFlat(k.paint,{"circle-opacity":e.opacity*e.marker.opacity,"circle-color":u(e,S),"circle-radius":c(e,S)})}if((_||b)&&(A.geojson=l(t),p.extendFlat(A.layout,{visibility:"visible","icon-image":"{symbol}-15","text-field":"{text}"}),_&&(p.extendFlat(A.layout,{"icon-size":e.marker.size/10}),p.extendFlat(A.paint,{"icon-opacity":e.opacity*e.marker.opacity,"icon-color":e.marker.color})),b)){var L=(e.marker||{}).size,z=m(e.textposition,L);p.extendFlat(A.layout,{"text-size":e.textfont.size,"text-anchor":z.anchor,"text-offset":z.offset}),p.extendFlat(A.paint,{"text-color":e.textfont.color,"text-opacity":e.opacity})}return T}},{"../../lib":561,"../../plots/mapbox/convert_text_opts":635,"../scatter/subtypes":762}],783:[function(t,e,r){"use strict";function n(t,e,r){var n=r("lon")||[],i=r("lat")||[],o=Math.min(n.length,i.length);return o<n.length&&(e.lon=n.slice(0,o)),o<i.length&&(e.lat=i.slice(0,o)),o}var 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u=1-l.y0/t.ya._length,c=t.xa._length,h=c*u/2,f=c-h;return l.x0=Math.max(Math.min(l.x0,f),h),l.x1=Math.max(Math.min(l.x1,f),h),s}var d=l.cd[l.index];l.a=d.a,l.b=d.b,l.c=d.c,l.xLabelVal=void 0,l.yLabelVal=void 0;var p=l.trace,g=p._ternary,m=p.hoverinfo.split("+"),v=[];return m.indexOf("all")!==-1&&(m=["a","b","c"]),m.indexOf("a")!==-1&&a(g.aaxis,d.a),m.indexOf("b")!==-1&&a(g.baxis,d.b),m.indexOf("c")!==-1&&a(g.caxis,d.c),l.extraText=v.join("<br>"),s}}},{"../../plots/cartesian/axes":585,"../scatter/hover":752}],791:[function(t,e,r){"use strict";var n={};n.attributes=t("./attributes"),n.supplyDefaults=t("./defaults"),n.colorbar=t("../scatter/colorbar"),n.calc=t("./calc"),n.plot=t("./plot"),n.style=t("./style"),n.hoverPoints=t("./hover"),n.selectPoints=t("./select"),n.moduleType="trace",n.name="scatterternary",n.basePlotModule=t("../../plots/ternary"),n.categories=["ternary","symbols","markerColorscale","showLegend"],n.meta={},e.exports=n},{"../../plots/ternary":648,"../scatter/colorbar":746,"./attributes":787,"./calc":788,"./defaults":789,"./hover":790,"./plot":792,"./select":793,"./style":794}],792:[function(t,e,r){"use strict";var n=t("../scatter/plot");e.exports=function(t,e){var r=t.plotContainer;r.select(".scatterlayer").selectAll("*").remove();for(var i={x:function(){return t.xaxis},y:function(){return t.yaxis},plot:r},o=new Array(e.length),a=t.graphDiv.calcdata,s=0;s<a.length;s++){var l=e.indexOf(a[s][0].trace);l!==-1&&(o[l]=a[s],e[l]._ternary=t)}n(t.graphDiv,i,o)}},{"../scatter/plot":759}],793:[function(t,e,r){"use 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o=t("../../components/color"),a=t("../../components/colorscale/attributes"),s=t("../../lib/extend").extendFlat;e.exports={z:{valType:"data_array"},x:{valType:"data_array"},y:{valType:"data_array"},text:{valType:"data_array"},surfacecolor:{valType:"data_array"},cauto:a.zauto,cmin:a.zmin,cmax:a.zmax,colorscale:a.colorscale,autocolorscale:s({},a.autocolorscale,{dflt:!1}),reversescale:a.reversescale,showscale:a.showscale,contours:{x:i("x"),y:i("y"),z:i("z")},hidesurface:{valType:"boolean",dflt:!1},lightposition:{x:{valType:"number",min:-1e5,max:1e5,dflt:10},y:{valType:"number",min:-1e5,max:1e5,dflt:1e4},z:{valType:"number",min:-1e5,max:1e5,dflt:0}},lighting:{ambient:{valType:"number",min:0,max:1,dflt:.8},diffuse:{valType:"number",min:0,max:1,dflt:.8},specular:{valType:"number",min:0,max:2,dflt:.05},roughness:{valType:"number",min:0,max:1,dflt:.5},fresnel:{valType:"number",min:0,max:5,dflt:.2}},opacity:{valType:"number",min:0,max:1,dflt:1},_nestedModules:{colorbar:"Colorbar"},_deprecated:{zauto:s({},a.zauto,{}),zmin:s({},a.zmin,{}),zmax:s({},a.zmax,{})}}},{"../../components/color":477,"../../components/colorscale/attributes":483,"../../lib/extend":556}],796:[function(t,e,r){"use 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++!r.showscale)return void a.autoMargin(t,u);var p=e[0].t.cb=l(t,u);p.fillcolor(n.scale.linear().domain(c.map(function(t){return h+t[0]*(f-h)})).range(c.map(function(t){return t[1]}))).filllevels({start:h,end:f,size:(f-h)/254}).options(r.colorbar)()}},{"../../components/colorbar/draw":480,"../../components/colorscale/get_scale":489,"../../lib":561,"../../plots/plots":641,d3:90,"fast-isnumeric":98}],798:[function(t,e,r){"use strict";function n(t,e,r){this.scene=t,this.uid=r,this.surface=e,this.data=null,this.showContour=[!1,!1,!1],this.dataScale=1}function i(t,e){return void 0===e&&(e=1),t.map(function(t){var r=t[0],n=d(t[1]),i=n.toRgb();return{index:r,rgb:[i.r,i.g,i.b,e]}})}function o(t){var e=t.shape,r=[e[0]+2,e[1]+2],n=u(new Float32Array(r[0]*r[1]),r);return f.assign(n.lo(1,1).hi(e[0],e[1]),t),f.assign(n.lo(1).hi(e[0],1),t.hi(e[0],1)),f.assign(n.lo(1,r[1]-1).hi(e[0],1),t.lo(0,e[1]-1).hi(e[0],1)),f.assign(n.lo(0,1).hi(1,e[1]),t.hi(1)),f.assign(n.lo(r[0]-1,1).hi(1,e[1]),t.lo(e[0]-1)),n.set(0,0,t.get(0,0)),n.set(0,r[1]-1,t.get(0,e[1]-1)),n.set(r[0]-1,0,t.get(e[0]-1,0)),n.set(r[0]-1,r[1]-1,t.get(e[0]-1,e[1]-1)),n}function a(t){var e=Math.max(t[0].shape[0],t[0].shape[1]);if(e<g){for(var r=g/e,n=[0|Math.floor(t[0].shape[0]*r+1),0|Math.floor(t[0].shape[1]*r+1)],i=n[0]*n[1],a=0;a<t.length;++a){var s=o(t[a]),l=u(new Float32Array(i),n);c(l,s,[r,0,0,0,r,0,0,0,1]),t[a]=l}return r}return 1}function s(t,e){var r=t.glplot.gl,i=l({gl:r}),o=new n(t,i,e.uid);return o.update(e),t.glplot.add(i),o}var l=t("gl-surface3d"),u=t("ndarray"),c=t("ndarray-homography"),h=t("ndarray-fill"),f=t("ndarray-ops"),d=t("tinycolor2"),p=t("../../lib/str2rgbarray"),g=128,m=n.prototype;m.handlePick=function(t){if(t.object===this.surface){var e=[Math.min(0|Math.round(t.data.index[0]/this.dataScale-1),this.data.z[0].length-1),Math.min(0|Math.round(t.data.index[1]/this.dataScale-1),this.data.z.length-1)],r=[0,0,0];Array.isArray(this.data.x[0])?r[0]=this.data.x[e[1]][e[0]]:r[0]=this.data.x[e[0]],Array.isArray(this.data.y[0])?r[1]=this.data.y[e[1]][e[0]]:r[1]=this.data.y[e[1]],r[2]=this.data.z[e[1]][e[0]],t.traceCoordinate=r;var n=this.scene.fullSceneLayout;t.dataCoordinate=[n.xaxis.d2l(r[0])*this.scene.dataScale[0],n.yaxis.d2l(r[1])*this.scene.dataScale[1],n.zaxis.d2l(r[2])*this.scene.dataScale[2]];var i=this.data.text;return i&&i[e[1]]&&void 0!==i[e[1]][e[0]]?t.textLabel=i[e[1]][e[0]]:t.textLabel="",t.data.dataCoordinate=t.dataCoordinate.slice(),this.surface.highlight(t.data),this.scene.glplot.spikes.position=t.dataCoordinate,!0}},m.setContourLevels=function(){for(var t=[[],[],[]],e=!1,r=0;r<3;++r)this.showContour[r]&&(e=!0,t[r]=this.scene.contourLevels[r]);e&&this.surface.update({levels:t})},m.update=function(t){var e,r=this.scene,n=r.fullSceneLayout,o=this.surface,s=t.opacity,l=i(t.colorscale,s),c=t.z,f=t.x,d=t.y,g=n.xaxis,m=n.yaxis,v=n.zaxis,y=r.dataScale,b=c[0].length,x=c.length,_=[u(new Float32Array(b*x),[b,x]),u(new Float32Array(b*x),[b,x]),u(new Float32Array(b*x),[b,x])],w=_[0],M=_[1],k=r.contourLevels;this.data=t,h(_[2],function(t,e){return v.d2l(c[e][t])*y[2]}),Array.isArray(f[0])?h(w,function(t,e){return g.d2l(f[e][t])*y[0]}):h(w,function(t){return g.d2l(f[t])*y[0]}),Array.isArray(d[0])?h(M,function(t,e){return m.d2l(d[e][t])*y[1]}):h(M,function(t,e){return m.d2l(d[e])*y[1]});var A={colormap:l,levels:[[],[],[]],showContour:[!0,!0,!0],showSurface:!t.hidesurface,contourProject:[[!1,!1,!1],[!1,!1,!1],[!1,!1,!1]],contourWidth:[1,1,1],contourColor:[[1,1,1,1],[1,1,1,1],[1,1,1,1]],contourTint:[1,1,1],dynamicColor:[[1,1,1,1],[1,1,1,1],[1,1,1,1]],dynamicWidth:[1,1,1],dynamicTint:[1,1,1],opacity:1};if(A.intensityBounds=[t.cmin,t.cmax],t.surfacecolor){var T=u(new Float32Array(b*x),[b,x]);h(T,function(e,r){return t.surfacecolor[r][e]}),_.push(T)}else A.intensityBounds[0]*=y[2],A.intensityBounds[1]*=y[2];this.dataScale=a(_),t.surfacecolor&&(A.intensity=_.pop()),"opacity"in t&&t.opacity<1&&(A.opacity=.25*t.opacity);var E=[!0,!0,!0],S=["x","y","z"];for(e=0;e<3;++e){var L=t.contours[S[e]];E[e]=L.highlight,A.showContour[e]=L.show||L.highlight,A.showContour[e]&&(A.contourProject[e]=[L.project.x,L.project.y,L.project.z],L.show?(this.showContour[e]=!0,A.levels[e]=k[e],o.highlightColor[e]=A.contourColor[e]=p(L.color),L.usecolormap?o.highlightTint[e]=A.contourTint[e]=0:o.highlightTint[e]=A.contourTint[e]=1,A.contourWidth[e]=L.width):this.showContour[e]=!1,L.highlight&&(A.dynamicColor[e]=p(L.highlightcolor),A.dynamicWidth[e]=L.highlightwidth))}A.coords=_,o.update(A),o.visible=t.visible,o.enableDynamic=E,o.snapToData=!0,"lighting"in t&&(o.ambientLight=t.lighting.ambient,o.diffuseLight=t.lighting.diffuse,o.specularLight=t.lighting.specular,o.roughness=t.lighting.roughness,o.fresnel=t.lighting.fresnel),"lightposition"in t&&(o.lightPosition=[t.lightposition.x,t.lightposition.y,t.lightposition.z]),s&&s<1&&(o.supportsTransparency=!0)},m.dispose=function(){this.scene.glplot.remove(this.surface),this.surface.dispose()},e.exports=s},{"../../lib/str2rgbarray":573,"gl-surface3d":201,ndarray:385,"ndarray-fill":375,"ndarray-homography":377,"ndarray-ops":379,tinycolor2:442}],799:[function(t,e,r){"use strict";function n(t,e,r){e in t&&!(r in t)&&(t[r]=t[e])}var i=t("../../lib"),o=t("../../components/colorscale/defaults"),a=t("./attributes");e.exports=function(t,e,r,s){function l(r,n){return i.coerce(t,e,a,r,n)}var u,c,h=l("z");if(!h)return void(e.visible=!1);var f=h[0].length,d=h.length;if(l("x"),l("y"),!Array.isArray(e.x))for(e.x=[],u=0;u<f;++u)e.x[u]=u;if(l("text"),!Array.isArray(e.y))for(e.y=[],u=0;u<d;++u)e.y[u]=u;["lighting.ambient","lighting.diffuse","lighting.specular","lighting.roughness","lighting.fresnel","lightposition.x","lightposition.y","lightposition.z","hidesurface","opacity"].forEach(function(t){l(t)});var p=l("surfacecolor");l("colorscale");var g=["x","y","z"];for(u=0;u<3;++u){var m="contours."+g[u],v=l(m+".show"),y=l(m+".highlight");if(v||y)for(c=0;c<3;++c)l(m+".project."+g[c]);v&&(l(m+".color"),l(m+".width"),l(m+".usecolormap")),y&&(l(m+".highlightcolor"),l(m+".highlightwidth"))}p||(n(t,"zmin","cmin"),n(t,"zmax","cmax"),n(t,"zauto","cauto")),o(t,e,s,l,{prefix:"",cLetter:"c"})}},{"../../components/colorscale/defaults":487,"../../lib":561,"./attributes":795}],800:[function(t,e,r){"use strict";var n={};n.attributes=t("./attributes"),n.supplyDefaults=t("./defaults"),n.colorbar=t("./colorbar"),n.calc=t("./calc"),n.plot=t("./convert"),n.moduleType="trace",n.name="surface",n.basePlotModule=t("../../plots/gl3d"),n.categories=["gl3d","noOpacity"],n.meta={},e.exports=n},{"../../plots/gl3d":621,"./attributes":795,"./calc":796,"./colorbar":797,"./convert":798,"./defaults":799}]},{},[12])(12)});
+\ No newline at end of file
+diff --git a/src/components/legend/attributes.js b/src/components/legend/attributes.js
+index 2920f1b..0035907 100644
+--- a/src/components/legend/attributes.js
++++ b/src/components/legend/attributes.js
+@@ -42,6 +42,13 @@ module.exports = {
+         role: 'info',
+         description: 'Sets the orientation of the legend.'
+     },
++    horizontalspacing: {
++        valType: 'enumerated',
++        values: ['column', 'wrapped'],
++        dflt: ['column'],
++        role: 'style',
++        description: 'Sets whether the spacing for a horizontal legend is into columns or wrapping'
++    },
+     traceorder: {
+         valType: 'flaglist',
+         flags: ['reversed', 'grouped'],
+diff --git a/src/components/legend/defaults.js b/src/components/legend/defaults.js
+index 71b53b8..f468377 100644
+--- a/src/components/legend/defaults.js
++++ b/src/components/legend/defaults.js
+@@ -22,6 +22,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+ 
+     var visibleTraces = 0,
+         defaultOrder = 'normal',
++        defaultHorizontalSpacing = 'column',
+         defaultX,
+         defaultY,
+         defaultXAnchor,
+@@ -86,5 +87,6 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
+     coerce('xanchor', defaultXAnchor);
+     coerce('y', defaultY);
+     coerce('yanchor', defaultYAnchor);
++    coerce('horizontalspacing', defaultHorizontalSpacing);
+     Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
+ };
+diff --git a/src/components/legend/draw.js b/src/components/legend/draw.js
+index 0e8d9f8..e2e4e98 100644
+--- a/src/components/legend/draw.js
++++ b/src/components/legend/draw.js
+@@ -474,7 +474,8 @@ function computeLegendDimensions(gd, groups, traces) {
+     var fullLayout = gd._fullLayout,
+         opts = fullLayout.legend,
+         borderwidth = opts.borderwidth,
+-        isGrouped = helpers.isGrouped(opts);
++        isGrouped = helpers.isGrouped(opts),
++        isHorizontalColumn = helpers.isHorizontalColumn(opts);
+ 
+     if(helpers.isVertical(opts)) {
+         if(isGrouped) {
+@@ -581,7 +582,7 @@ function computeLegendDimensions(gd, groups, traces) {
+         traces.each(function(d) {
+ 
+             var legendItem = d[0],
+-                traceWidth = maxTraceWidth,
++                traceWidth = isHorizontalColumn ? maxTraceWidth : 40 + d[0].width,
+                 traceGap = opts.tracegroupgap || 5;
+ 
+             if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
+diff --git a/src/components/legend/helpers.js b/src/components/legend/helpers.js
+index 5a481fc..560c572 100644
+--- a/src/components/legend/helpers.js
++++ b/src/components/legend/helpers.js
+@@ -27,3 +27,7 @@ exports.isVertical = function isVertical(legendLayout) {
+ exports.isReversed = function isReversed(legendLayout) {
+     return (legendLayout.traceorder || '').indexOf('reversed') !== -1;
+ };
++
++exports.isHorizontalColumn = function isReversed(legendLayout) {
++    return legendLayout.horizontalspacing === 'column';
++};
+\ No newline at end of file
+diff --git a/test/jasmine/tests/legend_test.js b/test/jasmine/tests/legend_test.js
+index e293458..8c5e714 100644
+--- a/test/jasmine/tests/legend_test.js
++++ b/test/jasmine/tests/legend_test.js
+@@ -412,6 +412,14 @@ describe('legend helpers:', function() {
+             expect(isReversed({ traceorder: 'reversed' })).toBe(true);
+         });
+     });
++
++    describe('isHorizontalColumn', function() {
++        var isHorizontalColumn = helpers.isHorizontalColumn;
++        it('should return true when option horizontalspacing is "column"', function () {
++            expect(isHorizontalColumn({ horizontalspacing: 'column'})).toBe(true);
++            expect(isHorizontalColumn({ horizontalspacing: 'wrapped'})).toBe(false);
++        });
++    });
+ });
+ 
+ describe('legend anchor utils:', function() {
diff --git a/src/components/legend/attributes.js b/src/components/legend/attributes.js
index 2920f1ba6f4..0035907a97f 100644
--- a/src/components/legend/attributes.js
+++ b/src/components/legend/attributes.js
@@ -42,6 +42,13 @@ module.exports = {
         role: 'info',
         description: 'Sets the orientation of the legend.'
     },
+    horizontalspacing: {
+        valType: 'enumerated',
+        values: ['column', 'wrapped'],
+        dflt: ['column'],
+        role: 'style',
+        description: 'Sets whether the spacing for a horizontal legend is into columns or wrapping'
+    },
     traceorder: {
         valType: 'flaglist',
         flags: ['reversed', 'grouped'],
diff --git a/src/components/legend/defaults.js b/src/components/legend/defaults.js
index 39e9bd80c70..280a0c1f35c 100644
--- a/src/components/legend/defaults.js
+++ b/src/components/legend/defaults.js
@@ -23,6 +23,7 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
 
     var visibleTraces = 0,
         defaultOrder = 'normal',
+        defaultHorizontalSpacing = 'column',
         defaultX,
         defaultY,
         defaultXAnchor,
@@ -87,5 +88,6 @@ module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
     coerce('xanchor', defaultXAnchor);
     coerce('y', defaultY);
     coerce('yanchor', defaultYAnchor);
+    coerce('horizontalspacing', defaultHorizontalSpacing);
     Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
 };
diff --git a/src/components/legend/draw.js b/src/components/legend/draw.js
index fd08a20baa5..be389368319 100644
--- a/src/components/legend/draw.js
+++ b/src/components/legend/draw.js
@@ -473,7 +473,8 @@ function computeLegendDimensions(gd, groups, traces) {
     var fullLayout = gd._fullLayout,
         opts = fullLayout.legend,
         borderwidth = opts.borderwidth,
-        isGrouped = helpers.isGrouped(opts);
+        isGrouped = helpers.isGrouped(opts),
+        isHorizontalColumn = helpers.isHorizontalColumn(opts);
 
     if(helpers.isVertical(opts)) {
         if(isGrouped) {
@@ -597,7 +598,7 @@ function computeLegendDimensions(gd, groups, traces) {
 
         traces.each(function(d) {
             var legendItem = d[0],
-                traceWidth = maxTraceWidth,
+                traceWidth = isHorizontalColumn ? maxTraceWidth : 40 + d[0].width,
                 traceGap = opts.tracegroupgap || 5;
 
             if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
diff --git a/test/jasmine/tests/legend_test.js b/test/jasmine/tests/legend_test.js
index c832da02dcd..7c3eb54fc35 100644
--- a/test/jasmine/tests/legend_test.js
+++ b/test/jasmine/tests/legend_test.js
@@ -413,6 +413,15 @@ describe('legend helpers:', function() {
             expect(isReversed({ traceorder: 'reversed' })).toBe(true);
         });
     });
+
+    describe('isHorizontalColumn', function() {
+        var isHorizontalColumn = helpers.isHorizontalColumn;
+
+        it('should return true when option horizontalspacing is "column"', function() {
+            expect(isHorizontalColumn({ horizontalspacing: 'column'})).toBe(true);
+            expect(isHorizontalColumn({ horizontalspacing: 'wrapped'})).toBe(false);
+        });
+    });
 });
 
 describe('legend anchor utils:', function() {